S: Taiwan 251
S: Republic of China
+N: Reinette Chatre
+E: reinette.chatre@intel.com
+D: WiMedia Link Protocol implementation
+D: UWB stack bits and pieces
+
N: Michael Elizabeth Chastain
E: mec@shout.net
D: Configure, Menuconfig, xconfig
S: Tula 300000
S: Russia
+N: Inaky Perez-Gonzalez
+E: inaky.perez-gonzalez@intel.com
+D: UWB stack, HWA-RC driver and HWA-HC drivers
+D: Wireless USB additions to the USB stack
+D: WiMedia Link Protocol bits and pieces
+
N: Gordon Peters
E: GordPeters@smarttech.com
D: Isochronous receive for IEEE 1394 driver (OHCI module).
--- /dev/null
+What: /sys/bus/umc/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The Wireless Host Controller Interface (WHCI)
+ specification describes a PCI-based device with
+ multiple capabilities; the UWB Multi-interface
+ Controller (UMC).
+
+ The umc bus presents each of the individual
+ capabilties as a device.
+
+What: /sys/bus/umc/devices/.../capability_id
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The ID of this capability, with 0 being the radio
+ controller capability.
+
+What: /sys/bus/umc/devices/.../version
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The specification version this capability's hardware
+ interface complies with.
Users:
USB PM tool
git://git.moblin.org/users/sarah/usb-pm-tool/
+
+What: /sys/bus/usb/device/.../authorized
+Date: July 2008
+KernelVersion: 2.6.26
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Authorized devices are available for use by device
+ drivers, non-authorized one are not. By default, wired
+ USB devices are authorized.
+
+ Certified Wireless USB devices are not authorized
+ initially and should be (by writing 1) after the
+ device has been authenticated.
+
+What: /sys/bus/usb/device/.../wusb_cdid
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ A devices's CDID, as 16 space-separated hex octets.
+
+What: /sys/bus/usb/device/.../wusb_ck
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ Write the device's connection key (CK) to start the
+ authentication of the device. The CK is 16
+ space-separated hex octets.
+
+What: /sys/bus/usb/device/.../wusb_disconnect
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ For Certified Wireless USB devices only.
+
+ Write a 1 to force the device to disconnect
+ (equivalent to unplugging a wired USB device).
--- /dev/null
+What: /sys/class/usb_host/usb_hostN/wusb_chid
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Write the CHID (16 space-separated hex octets) for this host controller.
+ This starts the host controller, allowing it to accept connection from
+ WUSB devices.
+
+ Set an all zero CHID to stop the host controller.
+
+What: /sys/class/usb_host/usb_hostN/wusb_trust_timeout
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Devices that haven't sent a WUSB packet to the host
+ within 'wusb_trust_timeout' ms are considered to have
+ disconnected and are removed. The default value of
+ 4000 ms is the value required by the WUSB
+ specification.
+
+ Since this relates to security (specifically, the
+ lifetime of PTKs and GTKs) it should not be changed
+ from the default.
--- /dev/null
+What: /sys/class/uwb_rc
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Interfaces for WiMedia Ultra Wideband Common Radio
+ Platform (UWB) radio controllers.
+
+ Familiarity with the ECMA-368 'High Rate Ultra
+ Wideband MAC and PHY Specification' is assumed.
+
+What: /sys/class/uwb_rc/beacon_timeout_ms
+Date: July 2008
+KernelVersion: 2.6.27
+Description:
+ If no beacons are received from a device for at least
+ this time, the device will be considered to have gone
+ and it will be removed. The default is 3 superframes
+ (~197 ms) as required by the specification.
+
+What: /sys/class/uwb_rc/uwbN/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ An individual UWB radio controller.
+
+What: /sys/class/uwb_rc/uwbN/beacon
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Write:
+
+ <channel> [<bpst offset>]
+
+ to start beaconing on a specific channel, or stop
+ beaconing if <channel> is -1. Valid channels depends
+ on the radio controller's supported band groups.
+
+ <bpst offset> may be used to try and join a specific
+ beacon group if more than one was found during a scan.
+
+What: /sys/class/uwb_rc/uwbN/scan
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Write:
+
+ <channel> <type> [<bpst offset>]
+
+ to start (or stop) scanning on a channel. <type> is one of:
+ 0 - scan
+ 1 - scan outside BP
+ 2 - scan while inactive
+ 3 - scanning disabled
+ 4 - scan (with start time of <bpst offset>)
+
+What: /sys/class/uwb_rc/uwbN/mac_address
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The EUI-48, in colon-separated hex octets, for this
+ radio controller. A write will change the radio
+ controller's EUI-48 but only do so while the device is
+ not beaconing or scanning.
+
+What: /sys/class/uwb_rc/uwbN/wusbhc
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ A symlink to the device (if any) of the WUSB Host
+ Controller PAL using this radio controller.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ A neighbour UWB device that has either been detected
+ as part of a scan or is a member of the radio
+ controllers beacon group.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The time (using the radio controllers internal 1 ms
+ interval superframe timer) of the last beacon from
+ this device was received.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/DevAddr
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The current DevAddr of this device in colon separated
+ hex octets.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/EUI_48
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+
+ The EUI-48 of this device in colon separated hex
+ octets.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/BPST
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/IEs
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ The latest IEs included in this device's beacon, in
+ space separated hex octets with one IE per line.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/LQE
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Link Quality Estimate - the Signal to Noise Ratio
+ (SNR) of all packets received from this device in dB.
+ This gives an estimate on a suitable PHY rate. Refer
+ to [ECMA-368] section 13.3 for more details.
+
+What: /sys/class/uwb_rc/uwbN/<EUI-48>/RSSI
+Date: July 2008
+KernelVersion: 2.6.27
+Contact: linux-usb@vger.kernel.org
+Description:
+ Received Signal Strength Indication - the strength of
+ the received signal in dB. LQE is a more useful
+ measure of the radio link quality.
--- /dev/null
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_*
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Various files for managing Cable Based Association of
+ (wireless) USB devices.
+
+ The sequence of operations should be:
+
+ 1. Device is plugged in.
+
+ 2. The connection manager (CM) sees a device with CBA capability.
+ (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
+
+ 3. The CM writes the host name, supported band groups,
+ and the CHID (host ID) into the wusb_host_name,
+ wusb_host_band_groups and wusb_chid files. These
+ get sent to the device and the CDID (if any) for
+ this host is requested.
+
+ 4. The CM can verify that the device's supported band
+ groups (wusb_device_band_groups) are compatible
+ with the host.
+
+ 5. The CM reads the wusb_cdid file.
+
+ 6. The CM looks it up its database.
+
+ - If it has a matching CHID,CDID entry, the device
+ has been authorized before and nothing further
+ needs to be done.
+
+ - If the CDID is zero (or the CM doesn't find a
+ matching CDID in its database), the device is
+ assumed to be not known. The CM may associate
+ the host with device by: writing a randomly
+ generated CDID to wusb_cdid and then a random CK
+ to wusb_ck (this uploads the new CC to the
+ device).
+
+ CMD may choose to prompt the user before
+ associating with a new device.
+
+ 7. Device is unplugged.
+
+ References:
+ [WUSB-AM] Association Models Supplement to the
+ Certified Wireless Universal Serial Bus
+ Specification, version 1.0.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_chid
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The CHID of the host formatted as 16 space-separated
+ hex octets.
+
+ Writes fetches device's supported band groups and the
+ the CDID for any existing association with this host.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_name
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ A friendly name for the host as a UTF-8 encoded string.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_host_band_groups
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The band groups supported by the host, in the format
+ defined in [WUSB-AM].
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_device_band_groups
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The band groups supported by the device, in the format
+ defined in [WUSB-AM].
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_cdid
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ The device's CDID formatted as 16 space-separated hex
+ octets.
+
+What: /sys/bus/usb/drivers/wusb_cbaf/.../wusb_ck
+Date: August 2008
+KernelVersion: 2.6.27
+Contact: David Vrabel <david.vrabel@csr.com>
+Description:
+ Write 16 space-separated random, hex octets to
+ associate with the device.
--- /dev/null
+ Recipe for getting/building/running Xen/ia64 with pv_ops
+ --------------------------------------------------------
+
+This recipe describes how to get xen-ia64 source and build it,
+and run domU with pv_ops.
+
+============
+Requirements
+============
+
+ - python
+ - mercurial
+ it (aka "hg") is an open-source source code
+ management software. See the below.
+ http://www.selenic.com/mercurial/wiki/
+ - git
+ - bridge-utils
+
+=================================
+Getting and Building Xen and Dom0
+=================================
+
+ My environment is;
+ Machine : Tiger4
+ Domain0 OS : RHEL5
+ DomainU OS : RHEL5
+
+ 1. Download source
+ # hg clone http://xenbits.xensource.com/ext/ia64/xen-unstable.hg
+ # cd xen-unstable.hg
+ # hg clone http://xenbits.xensource.com/ext/ia64/linux-2.6.18-xen.hg
+
+ 2. # make world
+
+ 3. # make install-tools
+
+ 4. copy kernels and xen
+ # cp xen/xen.gz /boot/efi/efi/redhat/
+ # cp build-linux-2.6.18-xen_ia64/vmlinux.gz \
+ /boot/efi/efi/redhat/vmlinuz-2.6.18.8-xen
+
+ 5. make initrd for Dom0/DomU
+ # make -C linux-2.6.18-xen.hg ARCH=ia64 modules_install \
+ O=$(/bin/pwd)/build-linux-2.6.18-xen_ia64
+ # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6.18.8-xen.img \
+ 2.6.18.8-xen --builtin mptspi --builtin mptbase \
+ --builtin mptscsih --builtin uhci-hcd --builtin ohci-hcd \
+ --builtin ehci-hcd
+
+================================
+Making a disk image for guest OS
+================================
+
+ 1. make file
+ # dd if=/dev/zero of=/root/rhel5.img bs=1M seek=4096 count=0
+ # mke2fs -F -j /root/rhel5.img
+ # mount -o loop /root/rhel5.img /mnt
+ # cp -ax /{dev,var,etc,usr,bin,sbin,lib} /mnt
+ # mkdir /mnt/{root,proc,sys,home,tmp}
+
+ Note: You may miss some device files. If so, please create them
+ with mknod. Or you can use tar instead of cp.
+
+ 2. modify DomU's fstab
+ # vi /mnt/etc/fstab
+ /dev/xvda1 / ext3 defaults 1 1
+ none /dev/pts devpts gid=5,mode=620 0 0
+ none /dev/shm tmpfs defaults 0 0
+ none /proc proc defaults 0 0
+ none /sys sysfs defaults 0 0
+
+ 3. modify inittab
+ set runlevel to 3 to avoid X trying to start
+ # vi /mnt/etc/inittab
+ id:3:initdefault:
+ Start a getty on the hvc0 console
+ X0:2345:respawn:/sbin/mingetty hvc0
+ tty1-6 mingetty can be commented out
+
+ 4. add hvc0 into /etc/securetty
+ # vi /mnt/etc/securetty (add hvc0)
+
+ 5. umount
+ # umount /mnt
+
+FYI, virt-manager can also make a disk image for guest OS.
+It's GUI tools and easy to make it.
+
+==================
+Boot Xen & Domain0
+==================
+
+ 1. replace elilo
+ elilo of RHEL5 can boot Xen and Dom0.
+ If you use old elilo (e.g RHEL4), please download from the below
+ http://elilo.sourceforge.net/cgi-bin/blosxom
+ and copy into /boot/efi/efi/redhat/
+ # cp elilo-3.6-ia64.efi /boot/efi/efi/redhat/elilo.efi
+
+ 2. modify elilo.conf (like the below)
+ # vi /boot/efi/efi/redhat/elilo.conf
+ prompt
+ timeout=20
+ default=xen
+ relocatable
+
+ image=vmlinuz-2.6.18.8-xen
+ label=xen
+ vmm=xen.gz
+ initrd=initrd-2.6.18.8-xen.img
+ read-only
+ append=" -- rhgb root=/dev/sda2"
+
+The append options before "--" are for xen hypervisor,
+the options after "--" are for dom0.
+
+FYI, your machine may need console options like
+"com1=19200,8n1 console=vga,com1". For example,
+append="com1=19200,8n1 console=vga,com1 -- rhgb console=tty0 \
+console=ttyS0 root=/dev/sda2"
+
+=====================================
+Getting and Building domU with pv_ops
+=====================================
+
+ 1. get pv_ops tree
+ # git clone http://people.valinux.co.jp/~yamahata/xen-ia64/linux-2.6-xen-ia64.git/
+
+ 2. git branch (if necessary)
+ # cd linux-2.6-xen-ia64/
+ # git checkout -b your_branch origin/xen-ia64-domu-minimal-2008may19
+ (Note: The current branch is xen-ia64-domu-minimal-2008may19.
+ But you would find the new branch. You can see with
+ "git branch -r" to get the branch lists.
+ http://people.valinux.co.jp/~yamahata/xen-ia64/for_eagl/linux-2.6-ia64-pv-ops.git/
+ is also available. The tree is based on
+ git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 test)
+
+
+ 3. copy .config for pv_ops of domU
+ # cp arch/ia64/configs/xen_domu_wip_defconfig .config
+
+ 4. make kernel with pv_ops
+ # make oldconfig
+ # make
+
+ 5. install the kernel and initrd
+ # cp vmlinux.gz /boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU
+ # make modules_install
+ # mkinitrd -f /boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img \
+ 2.6.26-rc3xen-ia64-08941-g1b12161 --builtin mptspi \
+ --builtin mptbase --builtin mptscsih --builtin uhci-hcd \
+ --builtin ohci-hcd --builtin ehci-hcd
+
+========================
+Boot DomainU with pv_ops
+========================
+
+ 1. make config of DomU
+ # vi /etc/xen/rhel5
+ kernel = "/boot/efi/efi/redhat/vmlinuz-2.6-pv_ops-xenU"
+ ramdisk = "/boot/efi/efi/redhat/initrd-2.6-pv_ops-xenU.img"
+ vcpus = 1
+ memory = 512
+ name = "rhel5"
+ disk = [ 'file:/root/rhel5.img,xvda1,w' ]
+ root = "/dev/xvda1 ro"
+ extra= "rhgb console=hvc0"
+
+ 2. After boot xen and dom0, start xend
+ # /etc/init.d/xend start
+ ( In the debugging case, # XEND_DEBUG=1 xend trace_start )
+
+ 3. start domU
+ # xm create -c rhel5
+
+=========
+Reference
+=========
+- Wiki of Xen/IA64 upstream merge
+ http://wiki.xensource.com/xenwiki/XenIA64/UpstreamMerge
+
+Written by Akio Takebe <takebe_akio@jp.fujitsu.com> on 28 May 2008
2) Or use the system kernel binary itself as dump-capture kernel and there is
no need to build a separate dump-capture kernel. This is possible
only with the architecutres which support a relocatable kernel. As
- of today, i386, x86_64 and ia64 architectures support relocatable kernel.
+ of today, i386, x86_64, ppc64 and ia64 architectures support relocatable
+ kernel.
Building a relocatable kernel is advantageous from the point of view that
one does not have to build a second kernel for capturing the dump. But
Dump-capture kernel config options (Arch Dependent, ppc64)
----------------------------------------------------------
-* Make and install the kernel and its modules. DO NOT add this kernel
- to the boot loader configuration files.
+1) Enable "Build a kdump crash kernel" support under "Kernel" options:
+
+ CONFIG_CRASH_DUMP=y
+
+2) Enable "Build a relocatable kernel" support
+
+ CONFIG_RELOCATABLE=y
+
+ Make and install the kernel and its modules.
Dump-capture kernel config options (Arch Dependent, ia64)
----------------------------------------------------------
inverse clock polarity (CPOL) mode
- spi-cpha - (optional) Empty property indicating device requires
shifted clock phase (CPHA) mode
+ - spi-cs-high - (optional) Empty property indicating device requires
+ chip select active high
SPI example for an MPC5200 SPI bus:
spi@f00 {
Required properties:
- - device_type : Should be "board-control"
+ - compatible : Should be "fsl,<board>-bcsr"
- reg : Offset and length of the register set for the device
Example:
bcsr@f8000000 {
- device_type = "board-control";
+ compatible = "fsl,mpc8360mds-bcsr";
reg = <f8000000 8000>;
};
--- /dev/null
+
+Linux UWB + Wireless USB + WiNET
+
+ (C) 2005-2006 Intel Corporation
+ Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU General Public License version
+ 2 as published by the Free Software Foundation.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301, USA.
+
+
+Please visit http://bughost.org/thewiki/Design-overview.txt-1.8 for
+updated content.
+
+ * Design-overview.txt-1.8
+
+This code implements a Ultra Wide Band stack for Linux, as well as
+drivers for the the USB based UWB radio controllers defined in the
+Wireless USB 1.0 specification (including Wireless USB host controller
+and an Intel WiNET controller).
+
+ 1. Introduction
+ 1. HWA: Host Wire adapters, your Wireless USB dongle
+
+ 2. DWA: Device Wired Adaptor, a Wireless USB hub for wired
+ devices
+ 3. WHCI: Wireless Host Controller Interface, the PCI WUSB host
+ adapter
+ 2. The UWB stack
+ 1. Devices and hosts: the basic structure
+
+ 2. Host Controller life cycle
+
+ 3. On the air: beacons and enumerating the radio neighborhood
+
+ 4. Device lists
+ 5. Bandwidth allocation
+
+ 3. Wireless USB Host Controller drivers
+
+ 4. Glossary
+
+
+ Introduction
+
+UWB is a wide-band communication protocol that is to serve also as the
+low-level protocol for others (much like TCP sits on IP). Currently
+these others are Wireless USB and TCP/IP, but seems Bluetooth and
+Firewire/1394 are coming along.
+
+UWB uses a band from roughly 3 to 10 GHz, transmitting at a max of
+~-41dB (or 0.074 uW/MHz--geography specific data is still being
+negotiated w/ regulators, so watch for changes). That band is divided in
+a bunch of ~1.5 GHz wide channels (or band groups) composed of three
+subbands/subchannels (528 MHz each). Each channel is independent of each
+other, so you could consider them different "busses". Initially this
+driver considers them all a single one.
+
+Radio time is divided in 65536 us long /superframes/, each one divided
+in 256 256us long /MASs/ (Media Allocation Slots), which are the basic
+time/media allocation units for transferring data. At the beginning of
+each superframe there is a Beacon Period (BP), where every device
+transmit its beacon on a single MAS. The length of the BP depends on how
+many devices are present and the length of their beacons.
+
+Devices have a MAC (fixed, 48 bit address) and a device (changeable, 16
+bit address) and send periodic beacons to advertise themselves and pass
+info on what they are and do. They advertise their capabilities and a
+bunch of other stuff.
+
+The different logical parts of this driver are:
+
+ *
+
+ *UWB*: the Ultra-Wide-Band stack -- manages the radio and
+ associated spectrum to allow for devices sharing it. Allows to
+ control bandwidth assingment, beaconing, scanning, etc
+
+ *
+
+ *WUSB*: the layer that sits on top of UWB to provide Wireless USB.
+ The Wireless USB spec defines means to control a UWB radio and to
+ do the actual WUSB.
+
+
+ HWA: Host Wire adapters, your Wireless USB dongle
+
+WUSB also defines a device called a Host Wire Adaptor (HWA), which in
+mere terms is a USB dongle that enables your PC to have UWB and Wireless
+USB. The Wireless USB Host Controller in a HWA looks to the host like a
+[Wireless] USB controller connected via USB (!)
+
+The HWA itself is broken in two or three main interfaces:
+
+ *
+
+ *RC*: Radio control -- this implements an interface to the
+ Ultra-Wide-Band radio controller. The driver for this implements a
+ USB-based UWB Radio Controller to the UWB stack.
+
+ *
+
+ *HC*: the wireless USB host controller. It looks like a USB host
+ whose root port is the radio and the WUSB devices connect to it.
+ To the system it looks like a separate USB host. The driver (will)
+ implement a USB host controller (similar to UHCI, OHCI or EHCI)
+ for which the root hub is the radio...To reiterate: it is a USB
+ controller that is connected via USB instead of PCI.
+
+ *
+
+ *WINET*: some HW provide a WiNET interface (IP over UWB). This
+ package provides a driver for it (it looks like a network
+ interface, winetX). The driver detects when there is a link up for
+ their type and kick into gear.
+
+
+ DWA: Device Wired Adaptor, a Wireless USB hub for wired devices
+
+These are the complement to HWAs. They are a USB host for connecting
+wired devices, but it is connected to your PC connected via Wireless
+USB. To the system it looks like yet another USB host. To the untrained
+eye, it looks like a hub that connects upstream wirelessly.
+
+We still offer no support for this; however, it should share a lot of
+code with the HWA-RC driver; there is a bunch of factorization work that
+has been done to support that in upcoming releases.
+
+
+ WHCI: Wireless Host Controller Interface, the PCI WUSB host adapter
+
+This is your usual PCI device that implements WHCI. Similar in concept
+to EHCI, it allows your wireless USB devices (including DWAs) to connect
+to your host via a PCI interface. As in the case of the HWA, it has a
+Radio Control interface and the WUSB Host Controller interface per se.
+
+There is still no driver support for this, but will be in upcoming
+releases.
+
+
+ The UWB stack
+
+The main mission of the UWB stack is to keep a tally of which devices
+are in radio proximity to allow drivers to connect to them. As well, it
+provides an API for controlling the local radio controllers (RCs from
+now on), such as to start/stop beaconing, scan, allocate bandwidth, etc.
+
+
+ Devices and hosts: the basic structure
+
+The main building block here is the UWB device (struct uwb_dev). For
+each device that pops up in radio presence (ie: the UWB host receives a
+beacon from it) you get a struct uwb_dev that will show up in
+/sys/class/uwb and in /sys/bus/uwb/devices.
+
+For each RC that is detected, a new struct uwb_rc is created. In turn, a
+RC is also a device, so they also show in /sys/class/uwb and
+/sys/bus/uwb/devices, but at the same time, only radio controllers show
+up in /sys/class/uwb_rc.
+
+ *
+
+ [*] The reason for RCs being also devices is that not only we can
+ see them while enumerating the system device tree, but also on the
+ radio (their beacons and stuff), so the handling has to be
+ likewise to that of a device.
+
+Each RC driver is implemented by a separate driver that plugs into the
+interface that the UWB stack provides through a struct uwb_rc_ops. The
+spec creators have been nice enough to make the message format the same
+for HWA and WHCI RCs, so the driver is really a very thin transport that
+moves the requests from the UWB API to the device [/uwb_rc_ops->cmd()/]
+and sends the replies and notifications back to the API
+[/uwb_rc_neh_grok()/]. Notifications are handled to the UWB daemon, that
+is chartered, among other things, to keep the tab of how the UWB radio
+neighborhood looks, creating and destroying devices as they show up or
+dissapear.
+
+Command execution is very simple: a command block is sent and a event
+block or reply is expected back. For sending/receiving command/events, a
+handle called /neh/ (Notification/Event Handle) is opened with
+/uwb_rc_neh_open()/.
+
+The HWA-RC (USB dongle) driver (drivers/uwb/hwa-rc.c) does this job for
+the USB connected HWA. Eventually, drivers/whci-rc.c will do the same
+for the PCI connected WHCI controller.
+
+
+ Host Controller life cycle
+
+So let's say we connect a dongle to the system: it is detected and
+firmware uploaded if needed [for Intel's i1480
+/drivers/uwb/ptc/usb.c:ptc_usb_probe()/] and then it is reenumerated.
+Now we have a real HWA device connected and
+/drivers/uwb/hwa-rc.c:hwarc_probe()/ picks it up, that will set up the
+Wire-Adaptor environment and then suck it into the UWB stack's vision of
+the world [/drivers/uwb/lc-rc.c:uwb_rc_add()/].
+
+ *
+
+ [*] The stack should put a new RC to scan for devices
+ [/uwb_rc_scan()/] so it finds what's available around and tries to
+ connect to them, but this is policy stuff and should be driven
+ from user space. As of now, the operator is expected to do it
+ manually; see the release notes for documentation on the procedure.
+
+When a dongle is disconnected, /drivers/uwb/hwa-rc.c:hwarc_disconnect()/
+takes time of tearing everything down safely (or not...).
+
+
+ On the air: beacons and enumerating the radio neighborhood
+
+So assuming we have devices and we have agreed for a channel to connect
+on (let's say 9), we put the new RC to beacon:
+
+ *
+
+ $ echo 9 0 > /sys/class/uwb_rc/uwb0/beacon
+
+Now it is visible. If there were other devices in the same radio channel
+and beacon group (that's what the zero is for), the dongle's radio
+control interface will send beacon notifications on its
+notification/event endpoint (NEEP). The beacon notifications are part of
+the event stream that is funneled into the API with
+/drivers/uwb/neh.c:uwb_rc_neh_grok()/ and delivered to the UWBD, the UWB
+daemon through a notification list.
+
+UWBD wakes up and scans the event list; finds a beacon and adds it to
+the BEACON CACHE (/uwb_beca/). If he receives a number of beacons from
+the same device, he considers it to be 'onair' and creates a new device
+[/drivers/uwb/lc-dev.c:uwbd_dev_onair()/]. Similarly, when no beacons
+are received in some time, the device is considered gone and wiped out
+[uwbd calls periodically /uwb/beacon.c:uwb_beca_purge()/ that will purge
+the beacon cache of dead devices].
+
+
+ Device lists
+
+All UWB devices are kept in the list of the struct bus_type uwb_bus.
+
+
+ Bandwidth allocation
+
+The UWB stack maintains a local copy of DRP availability through
+processing of incoming *DRP Availability Change* notifications. This
+local copy is currently used to present the current bandwidth
+availability to the user through the sysfs file
+/sys/class/uwb_rc/uwbx/bw_avail. In the future the bandwidth
+availability information will be used by the bandwidth reservation
+routines.
+
+The bandwidth reservation routines are in progress and are thus not
+present in the current release. When completed they will enable a user
+to initiate DRP reservation requests through interaction with sysfs. DRP
+reservation requests from remote UWB devices will also be handled. The
+bandwidth management done by the UWB stack will include callbacks to the
+higher layers will enable the higher layers to use the reservations upon
+completion. [Note: The bandwidth reservation work is in progress and
+subject to change.]
+
+
+ Wireless USB Host Controller drivers
+
+*WARNING* This section needs a lot of work!
+
+As explained above, there are three different types of HCs in the WUSB
+world: HWA-HC, DWA-HC and WHCI-HC.
+
+HWA-HC and DWA-HC share that they are Wire-Adapters (USB or WUSB
+connected controllers), and their transfer management system is almost
+identical. So is their notification delivery system.
+
+HWA-HC and WHCI-HC share that they are both WUSB host controllers, so
+they have to deal with WUSB device life cycle and maintenance, wireless
+root-hub
+
+HWA exposes a Host Controller interface (HWA-HC 0xe0/02/02). This has
+three endpoints (Notifications, Data Transfer In and Data Transfer
+Out--known as NEP, DTI and DTO in the code).
+
+We reserve UWB bandwidth for our Wireless USB Cluster, create a Cluster
+ID and tell the HC to use all that. Then we start it. This means the HC
+starts sending MMCs.
+
+ *
+
+ The MMCs are blocks of data defined somewhere in the WUSB1.0 spec
+ that define a stream in the UWB channel time allocated for sending
+ WUSB IEs (host to device commands/notifications) and Device
+ Notifications (device initiated to host). Each host defines a
+ unique Wireless USB cluster through MMCs. Devices can connect to a
+ single cluster at the time. The IEs are Information Elements, and
+ among them are the bandwidth allocations that tell each device
+ when can they transmit or receive.
+
+Now it all depends on external stimuli.
+
+*New device connection*
+
+A new device pops up, it scans the radio looking for MMCs that give out
+the existence of Wireless USB channels. Once one (or more) are found,
+selects which one to connect to. Sends a /DN_Connect/ (device
+notification connect) during the DNTS (Device Notification Time
+Slot--announced in the MMCs
+
+HC picks the /DN_Connect/ out (nep module sends to notif.c for delivery
+into /devconnect/). This process starts the authentication process for
+the device. First we allocate a /fake port/ and assign an
+unauthenticated address (128 to 255--what we really do is
+0x80 | fake_port_idx). We fiddle with the fake port status and /khubd/
+sees a new connection, so he moves on to enable the fake port with a reset.
+
+So now we are in the reset path -- we know we have a non-yet enumerated
+device with an unauthorized address; we ask user space to authenticate
+(FIXME: not yet done, similar to bluetooth pairing), then we do the key
+exchange (FIXME: not yet done) and issue a /set address 0/ to bring the
+device to the default state. Device is authenticated.
+
+From here, the USB stack takes control through the usb_hcd ops. khubd
+has seen the port status changes, as we have been toggling them. It will
+start enumerating and doing transfers through usb_hcd->urb_enqueue() to
+read descriptors and move our data.
+
+*Device life cycle and keep alives*
+
+Everytime there is a succesful transfer to/from a device, we update a
+per-device activity timestamp. If not, every now and then we check and
+if the activity timestamp gets old, we ping the device by sending it a
+Keep Alive IE; it responds with a /DN_Alive/ pong during the DNTS (this
+arrives to us as a notification through
+devconnect.c:wusb_handle_dn_alive(). If a device times out, we
+disconnect it from the system (cleaning up internal information and
+toggling the bits in the fake hub port, which kicks khubd into removing
+the rest of the stuff).
+
+This is done through devconnect:__wusb_check_devs(), which will scan the
+device list looking for whom needs refreshing.
+
+If the device wants to disconnect, it will either die (ugly) or send a
+/DN_Disconnect/ that will prompt a disconnection from the system.
+
+*Sending and receiving data*
+
+Data is sent and received through /Remote Pipes/ (rpipes). An rpipe is
+/aimed/ at an endpoint in a WUSB device. This is the same for HWAs and
+DWAs.
+
+Each HC has a number of rpipes and buffers that can be assigned to them;
+when doing a data transfer (xfer), first the rpipe has to be aimed and
+prepared (buffers assigned), then we can start queueing requests for
+data in or out.
+
+Data buffers have to be segmented out before sending--so we send first a
+header (segment request) and then if there is any data, a data buffer
+immediately after to the DTI interface (yep, even the request). If our
+buffer is bigger than the max segment size, then we just do multiple
+requests.
+
+[This sucks, because doing USB scatter gatter in Linux is resource
+intensive, if any...not that the current approach is not. It just has to
+be cleaned up a lot :)].
+
+If reading, we don't send data buffers, just the segment headers saying
+we want to read segments.
+
+When the xfer is executed, we receive a notification that says data is
+ready in the DTI endpoint (handled through
+xfer.c:wa_handle_notif_xfer()). In there we read from the DTI endpoint a
+descriptor that gives us the status of the transfer, its identification
+(given when we issued it) and the segment number. If it was a data read,
+we issue another URB to read into the destination buffer the chunk of
+data coming out of the remote endpoint. Done, wait for the next guy. The
+callbacks for the URBs issued from here are the ones that will declare
+the xfer complete at some point and call it's callback.
+
+Seems simple, but the implementation is not trivial.
+
+ *
+
+ *WARNING* Old!!
+
+The main xfer descriptor, wa_xfer (equivalent to a URB) contains an
+array of segments, tallys on segments and buffers and callback
+information. Buried in there is a lot of URBs for executing the segments
+and buffer transfers.
+
+For OUT xfers, there is an array of segments, one URB for each, another
+one of buffer URB. When submitting, we submit URBs for segment request
+1, buffer 1, segment 2, buffer 2...etc. Then we wait on the DTI for xfer
+result data; when all the segments are complete, we call the callback to
+finalize the transfer.
+
+For IN xfers, we only issue URBs for the segments we want to read and
+then wait for the xfer result data.
+
+*URB mapping into xfers*
+
+This is done by hwahc_op_urb_[en|de]queue(). In enqueue() we aim an
+rpipe to the endpoint where we have to transmit, create a transfer
+context (wa_xfer) and submit it. When the xfer is done, our callback is
+called and we assign the status bits and release the xfer resources.
+
+In dequeue() we are basically cancelling/aborting the transfer. We issue
+a xfer abort request to the HC, cancell all the URBs we had submitted
+and not yet done and when all that is done, the xfer callback will be
+called--this will call the URB callback.
+
+
+ Glossary
+
+*DWA* -- Device Wire Adapter
+
+USB host, wired for downstream devices, upstream connects wirelessly
+with Wireless USB.
+
+*EVENT* -- Response to a command on the NEEP
+
+*HWA* -- Host Wire Adapter / USB dongle for UWB and Wireless USB
+
+*NEH* -- Notification/Event Handle
+
+Handle/file descriptor for receiving notifications or events. The WA
+code requires you to get one of this to listen for notifications or
+events on the NEEP.
+
+*NEEP* -- Notification/Event EndPoint
+
+Stuff related to the management of the first endpoint of a HWA USB
+dongle that is used to deliver an stream of events and notifications to
+the host.
+
+*NOTIFICATION* -- Message coming in the NEEP as response to something.
+
+*RC* -- Radio Control
+
+Design-overview.txt-1.8 (last edited 2006-11-04 12:22:24 by
+InakyPerezGonzalez)
+
--- /dev/null
+#! /bin/bash
+#
+
+set -e
+
+progname=$(basename $0)
+function help
+{
+ cat <<EOF
+Usage: $progname COMMAND DEVICEs [ARGS]
+
+Command for manipulating the pairing/authentication credentials of a
+Wireless USB device that supports wired-mode Cable-Based-Association.
+
+Works in conjunction with the wusb-cba.ko driver from http://linuxuwb.org.
+
+
+DEVICE
+
+ sysfs path to the device to authenticate; for example, both this
+ guys are the same:
+
+ /sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4.4/1-4.4:1.1
+ /sys/bus/usb/drivers/wusb-cbaf/1-4.4:1.1
+
+COMMAND/ARGS are
+
+ start
+
+ Start a WUSB host controller (by setting up a CHID)
+
+ set-chid DEVICE HOST-CHID HOST-BANDGROUP HOST-NAME
+
+ Sets host information in the device; after this you can call the
+ get-cdid to see how does this device report itself to us.
+
+ get-cdid DEVICE
+
+ Get the device ID associated to the HOST-CHDI we sent with
+ 'set-chid'. We might not know about it.
+
+ set-cc DEVICE
+
+ If we allow the device to connect, set a random new CDID and CK
+ (connection key). Device saves them for the next time it wants to
+ connect wireless. We save them for that next time also so we can
+ authenticate the device (when we see the CDID he uses to id
+ itself) and the CK to crypto talk to it.
+
+CHID is always 16 hex bytes in 'XX YY ZZ...' form
+BANDGROUP is almost always 0001
+
+Examples:
+
+ You can default most arguments to '' to get a sane value:
+
+ $ $progname set-chid '' '' '' "My host name"
+
+ A full sequence:
+
+ $ $progname set-chid '' '' '' "My host name"
+ $ $progname get-cdid ''
+ $ $progname set-cc ''
+
+EOF
+}
+
+
+# Defaults
+# FIXME: CHID should come from a database :), band group from the host
+host_CHID="00 11 22 33 44 55 66 77 88 99 aa bb cc dd ee ff"
+host_band_group="0001"
+host_name=$(hostname)
+
+devs="$(echo /sys/bus/usb/drivers/wusb-cbaf/[0-9]*)"
+hdevs="$(for h in /sys/class/uwb_rc/*/wusbhc; do readlink -f $h; done)"
+
+result=0
+case $1 in
+ start)
+ for dev in ${2:-$hdevs}
+ do
+ uwb_rc=$(readlink -f $dev/uwb_rc)
+ if cat $uwb_rc/beacon | grep -q -- "-1"
+ then
+ echo 13 0 > $uwb_rc/beacon
+ echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2
+ fi
+ echo $host_CHID > $dev/wusb_chid
+ echo I: started host $(basename $dev) >&2
+ done
+ ;;
+ stop)
+ for dev in ${2:-$hdevs}
+ do
+ echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid
+ echo I: stopped host $(basename $dev) >&2
+ uwb_rc=$(readlink -f $dev/uwb_rc)
+ echo -1 | cat > $uwb_rc/beacon
+ echo I: stopped beaconing on $(basename $uwb_rc) >&2
+ done
+ ;;
+ set-chid)
+ shift
+ for dev in ${2:-$devs}; do
+ echo "${4:-$host_name}" > $dev/wusb_host_name
+ echo "${3:-$host_band_group}" > $dev/wusb_host_band_groups
+ echo ${2:-$host_CHID} > $dev/wusb_chid
+ done
+ ;;
+ get-cdid)
+ for dev in ${2:-$devs}
+ do
+ cat $dev/wusb_cdid
+ done
+ ;;
+ set-cc)
+ for dev in ${2:-$devs}; do
+ shift
+ CDID="$(head --bytes=16 /dev/urandom | od -tx1 -An)"
+ CK="$(head --bytes=16 /dev/urandom | od -tx1 -An)"
+ echo "$CDID" > $dev/wusb_cdid
+ echo "$CK" > $dev/wusb_ck
+
+ echo I: CC set >&2
+ echo "CHID: $(cat $dev/wusb_chid)"
+ echo "CDID:$CDID"
+ echo "CK: $CK"
+ done
+ ;;
+ help|h|--help|-h)
+ help
+ ;;
+ *)
+ echo "E: Unknown usage" 1>&2
+ help 1>&2
+ result=1
+esac
+exit $result
W: http://www.ibm.com/developerworks/power/cell/
S: Supported
+CERTIFIED WIRELESS USB (WUSB) SUBSYSTEM:
+P: David Vrabel
+M: david.vrabel@csr.com
+L: linux-usb@vger.kernel.org
+S: Supported
+
CFAG12864B LCD DRIVER
P: Miguel Ojeda Sandonis
M: miguel.ojeda.sandonis@gmail.com
L: linux-kernel@vger.kernel.org
S: Supported
+INTEL IOMMU (VT-d)
+P: David Woodhouse
+M: dwmw2@infradead.org
+L: iommu@lists.linux-foundation.org
+T: git://git.infradead.org/iommu-2.6.git
+S: Supported
+
INTEL IOP-ADMA DMA DRIVER
P: Dan Williams
M: dan.j.williams@intel.com
NETEFFECT IWARP RNIC DRIVER (IW_NES)
P: Faisal Latif
-M: flatif@neteffect.com
+M: faisal.latif@intel.com
P: Chien Tung
-M: ctung@neteffect.com
+M: chien.tin.tung@intel.com
L: general@lists.openfabrics.org
W: http://www.neteffect.com
S: Supported
T: git kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6.git
S: Maintained
+ULTRA-WIDEBAND (UWB) SUBSYSTEM:
+P: David Vrabel
+M: david.vrabel@csr.com
+L: linux-usb@vger.kernel.org
+S: Supported
+
UNIFORM CDROM DRIVER
P: Jens Axboe
M: axboe@kernel.dk
L: linux-scsi@vger.kernel.org
S: Maintained
+WIMEDIA LLC PROTOCOL (WLP) SUBSYSTEM
+P: David Vrabel
+M: david.vrabel@csr.com
+S: Maintained
+
WISTRON LAPTOP BUTTON DRIVER
P: Miloslav Trmac
M: mitr@volny.cz
select GENERIC_GPIO
select GENERIC_TIME
select GENERIC_CLOCKEVENTS
- select ZONE_DMA if PCI
+ select DMABOUNCE if PCI
help
Support for Intel's IXP4XX (XScale) family of processors.
source "drivers/usb/Kconfig"
+source "drivers/uwb/Kconfig"
+
source "drivers/mmc/Kconfig"
source "drivers/memstick/Kconfig"
config SA1111
bool
select DMABOUNCE if !ARCH_PXA
- select ZONE_DMA if !ARCH_PXA
config DMABOUNCE
bool
+ select ZONE_DMA
config TIMER_ACORN
bool
goto out;
}
+#ifdef CONFIG_DMABOUNCE
/*
* If the parent device has a DMA mask associated with it,
* propagate it down to the children.
}
}
}
+#endif
out:
return ret;
#define sa1111_resume NULL
#endif
-static int sa1111_probe(struct platform_device *pdev)
+static int __devinit sa1111_probe(struct platform_device *pdev)
{
struct resource *mem;
int irq;
# CONFIG_MACH_MAINSTONE is not set
# CONFIG_ARCH_PXA_IDP is not set
# CONFIG_PXA_SHARPSL is not set
+CONFIG_TRIZEPS_PXA=y
CONFIG_MACH_TRIZEPS4=y
CONFIG_MACH_TRIZEPS4_CONXS=y
# CONFIG_MACH_TRIZEPS4_ANY is not set
* node 3: 0xd8000000 - 0xdfffffff
*/
#define NODE_MEM_SIZE_BITS 24
+#define SECTION_SIZE_BITS 24
+#define MAX_PHYSMEM_BITS 32
#endif
comment "IXP4xx Options"
-config DMABOUNCE
- bool
- default y
- depends on PCI
-
config IXP4XX_INDIRECT_PCI
bool "Use indirect PCI memory access"
depends on PCI
#include <linux/mv643xx_eth.h>
#include <linux/ata_platform.h>
#include <linux/spi/orion_spi.h>
+#include <net/dsa.h>
#include <asm/page.h>
#include <asm/timex.h>
#include <asm/mach/map.h>
/*****************************************************************************
+ * Ethernet switch
+ ****************************************************************************/
+static struct resource kirkwood_switch_resources[] = {
+ {
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device kirkwood_switch_device = {
+ .name = "dsa",
+ .id = 0,
+ .num_resources = 0,
+ .resource = kirkwood_switch_resources,
+};
+
+void __init kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq)
+{
+ if (irq != NO_IRQ) {
+ kirkwood_switch_resources[0].start = irq;
+ kirkwood_switch_resources[0].end = irq;
+ kirkwood_switch_device.num_resources = 1;
+ }
+
+ d->mii_bus = &kirkwood_ge00_shared.dev;
+ d->netdev = &kirkwood_ge00.dev;
+ kirkwood_switch_device.dev.platform_data = d;
+
+ platform_device_register(&kirkwood_switch_device);
+}
+
+
+/*****************************************************************************
* SoC RTC
****************************************************************************/
static struct resource kirkwood_rtc_resource = {
#ifndef __ARCH_KIRKWOOD_COMMON_H
#define __ARCH_KIRKWOOD_COMMON_H
+struct dsa_platform_data;
struct mv643xx_eth_platform_data;
struct mv_sata_platform_data;
void kirkwood_ehci_init(void);
void kirkwood_ge00_init(struct mv643xx_eth_platform_data *eth_data);
+void kirkwood_ge00_switch_init(struct dsa_platform_data *d, int irq);
void kirkwood_pcie_init(void);
void kirkwood_rtc_init(void);
void kirkwood_sata_init(struct mv_sata_platform_data *sata_data);
#include <linux/ata_platform.h>
#include <linux/mv643xx_eth.h>
#include <linux/ethtool.h>
+#include <net/dsa.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
.duplex = DUPLEX_FULL,
};
+static struct dsa_platform_data rd88f6281_switch_data = {
+ .port_names[0] = "lan1",
+ .port_names[1] = "lan2",
+ .port_names[2] = "lan3",
+ .port_names[3] = "lan4",
+ .port_names[4] = "wan",
+ .port_names[5] = "cpu",
+};
+
static struct mv_sata_platform_data rd88f6281_sata_data = {
.n_ports = 2,
};
kirkwood_ehci_init();
kirkwood_ge00_init(&rd88f6281_ge00_data);
+ kirkwood_ge00_switch_init(&rd88f6281_switch_data, NO_IRQ);
kirkwood_rtc_init();
kirkwood_sata_init(&rd88f6281_sata_data);
kirkwood_uart0_init();
#include <linux/platform_device.h>
#include <linux/ata_platform.h>
#include <linux/mv643xx_eth.h>
+#include <linux/ethtool.h>
#include <mach/mv78xx0.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
static struct mv643xx_eth_platform_data db78x00_ge10_data = {
.phy_addr = MV643XX_ETH_PHY_NONE,
+ .speed = SPEED_1000,
+ .duplex = DUPLEX_FULL,
};
static struct mv643xx_eth_platform_data db78x00_ge11_data = {
.phy_addr = MV643XX_ETH_PHY_NONE,
+ .speed = SPEED_1000,
+ .duplex = DUPLEX_FULL,
};
static struct mv_sata_platform_data db78x00_sata_data = {
#include <linux/mv643xx_i2c.h>
#include <linux/ata_platform.h>
#include <linux/spi/orion_spi.h>
+#include <net/dsa.h>
#include <asm/page.h>
#include <asm/setup.h>
#include <asm/timex.h>
/*****************************************************************************
+ * Ethernet switch
+ ****************************************************************************/
+static struct resource orion5x_switch_resources[] = {
+ {
+ .start = 0,
+ .end = 0,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device orion5x_switch_device = {
+ .name = "dsa",
+ .id = 0,
+ .num_resources = 0,
+ .resource = orion5x_switch_resources,
+};
+
+void __init orion5x_eth_switch_init(struct dsa_platform_data *d, int irq)
+{
+ if (irq != NO_IRQ) {
+ orion5x_switch_resources[0].start = irq;
+ orion5x_switch_resources[0].end = irq;
+ orion5x_switch_device.num_resources = 1;
+ }
+
+ d->mii_bus = &orion5x_eth_shared.dev;
+ d->netdev = &orion5x_eth.dev;
+ orion5x_switch_device.dev.platform_data = d;
+
+ platform_device_register(&orion5x_switch_device);
+}
+
+
+/*****************************************************************************
* I2C
****************************************************************************/
static struct mv64xxx_i2c_pdata orion5x_i2c_pdata = {
* SPI
****************************************************************************/
static struct orion_spi_info orion5x_spi_plat_data = {
- .tclk = 0,
+ .tclk = 0,
+ .enable_clock_fix = 1,
};
static struct resource orion5x_spi_resources[] = {
#ifndef __ARCH_ORION5X_COMMON_H
#define __ARCH_ORION5X_COMMON_H
+struct dsa_platform_data;
struct mv643xx_eth_platform_data;
struct mv_sata_platform_data;
void orion5x_ehci0_init(void);
void orion5x_ehci1_init(void);
void orion5x_eth_init(struct mv643xx_eth_platform_data *eth_data);
+void orion5x_eth_switch_init(struct dsa_platform_data *d, int irq);
void orion5x_i2c_init(void);
void orion5x_sata_init(struct mv_sata_platform_data *sata_data);
void orion5x_spi_init(void);
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/ethtool.h>
+#include <net/dsa.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/leds.h>
.duplex = DUPLEX_FULL,
};
+static struct dsa_platform_data rd88f5181l_fxo_switch_data = {
+ .port_names[0] = "lan2",
+ .port_names[1] = "lan1",
+ .port_names[2] = "wan",
+ .port_names[3] = "cpu",
+ .port_names[5] = "lan4",
+ .port_names[7] = "lan3",
+};
+
static void __init rd88f5181l_fxo_init(void)
{
/*
*/
orion5x_ehci0_init();
orion5x_eth_init(&rd88f5181l_fxo_eth_data);
+ orion5x_eth_switch_init(&rd88f5181l_fxo_switch_data, NO_IRQ);
orion5x_uart0_init();
orion5x_setup_dev_boot_win(RD88F5181L_FXO_NOR_BOOT_BASE,
#include <linux/mv643xx_eth.h>
#include <linux/ethtool.h>
#include <linux/i2c.h>
+#include <net/dsa.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/leds.h>
.duplex = DUPLEX_FULL,
};
+static struct dsa_platform_data rd88f5181l_ge_switch_data = {
+ .port_names[0] = "lan2",
+ .port_names[1] = "lan1",
+ .port_names[2] = "wan",
+ .port_names[3] = "cpu",
+ .port_names[5] = "lan4",
+ .port_names[7] = "lan3",
+};
+
static struct i2c_board_info __initdata rd88f5181l_ge_i2c_rtc = {
I2C_BOARD_INFO("ds1338", 0x68),
};
*/
orion5x_ehci0_init();
orion5x_eth_init(&rd88f5181l_ge_eth_data);
+ orion5x_eth_switch_init(&rd88f5181l_ge_switch_data, gpio_to_irq(8));
orion5x_i2c_init();
orion5x_uart0_init();
#include <linux/spi/orion_spi.h>
#include <linux/spi/flash.h>
#include <linux/ethtool.h>
+#include <net/dsa.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/leds.h>
.duplex = DUPLEX_FULL,
};
+static struct dsa_platform_data rd88f6183ap_ge_switch_data = {
+ .port_names[0] = "lan1",
+ .port_names[1] = "lan2",
+ .port_names[2] = "lan3",
+ .port_names[3] = "lan4",
+ .port_names[4] = "wan",
+ .port_names[5] = "cpu",
+};
+
static struct mtd_partition rd88f6183ap_ge_partitions[] = {
{
.name = "kernel",
*/
orion5x_ehci0_init();
orion5x_eth_init(&rd88f6183ap_ge_eth_data);
+ orion5x_eth_switch_init(&rd88f6183ap_ge_switch_data, gpio_to_irq(3));
spi_register_board_info(rd88f6183ap_ge_spi_slave_info,
ARRAY_SIZE(rd88f6183ap_ge_spi_slave_info));
orion5x_spi_init();
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/ethtool.h>
+#include <net/dsa.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/mach/arch.h>
.duplex = DUPLEX_FULL,
};
+static struct dsa_platform_data wrt350n_v2_switch_data = {
+ .port_names[0] = "lan2",
+ .port_names[1] = "lan1",
+ .port_names[2] = "wan",
+ .port_names[3] = "cpu",
+ .port_names[5] = "lan3",
+ .port_names[7] = "lan4",
+};
+
static void __init wrt350n_v2_init(void)
{
/*
*/
orion5x_ehci0_init();
orion5x_eth_init(&wrt350n_v2_eth_data);
+ orion5x_eth_switch_init(&wrt350n_v2_switch_data, NO_IRQ);
orion5x_uart0_init();
orion5x_setup_dev_boot_win(WRT350N_V2_NOR_BOOT_BASE,
bool "CompuLab CM-X255/CM-X270 modules"
select PXA27x
select IWMMXT
- select ZONE_DMA if PCI
select PXA25x
select PXA_SSP
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-
+#ifndef __ASM_MACH_IRQS_H
+#define __ASM_MACH_IRQS_H
#ifdef CONFIG_PXA_HAVE_ISA_IRQS
#define PXA_ISA_IRQ(x) (x)
#endif
#endif /* CONFIG_PCI_HOST_ITE8152 */
+
+#endif /* __ASM_MACH_IRQS_H */
#define SPITZ_SCP2_GPIO_BASE (NR_BUILTIN_GPIO + 12)
#define SPITZ_GPIO_IR_ON (SPITZ_SCP2_GPIO_BASE + 0)
-#define SPITZ_GPIO_AKIN_PULLUP (SPITZ_SCP2_GPIO_BASE + 1
+#define SPITZ_GPIO_AKIN_PULLUP (SPITZ_SCP2_GPIO_BASE + 1)
#define SPITZ_GPIO_RESERVED_1 (SPITZ_SCP2_GPIO_BASE + 2)
#define SPITZ_GPIO_RESERVED_2 (SPITZ_SCP2_GPIO_BASE + 3)
#define SPITZ_GPIO_RESERVED_3 (SPITZ_SCP2_GPIO_BASE + 4)
do_div(c, 1000000000);
period_cycles = c;
- if (period_cycles < 0)
+ if (period_cycles < 1)
period_cycles = 1;
prescale = (period_cycles - 1) / 1024;
pv = period_cycles / (prescale + 1) - 1;
/* Switch mode */
if (mode & IR_SIRMODE)
trizeps_conxs_ircr &= ~ConXS_IRCR_MODE; /* Slow mode */
- else if (mode & IR_FIRMODE) {
+ else if (mode & IR_FIRMODE)
trizeps_conxs_ircr |= ConXS_IRCR_MODE; /* Fast mode */
/* Switch power */
fclk = pll / s3c2443_fclk_div(clkdiv0);
hclk = s3c2443_prediv_getrate(&clk_prediv);
- hclk = hclk / s3c2443_get_hdiv(clkdiv0);
- hclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_HCLK) ? 2 : 1);
+ hclk /= s3c2443_get_hdiv(clkdiv0);
pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1);
s3c24xx_setup_clocks(xtal, fclk, hclk, pclk);
* Clean and invalidate the entire cache.
*/
ENTRY(v4_flush_kern_cache_all)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
mov r0, #0
mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
mov pc, lr
* - flags - vma_area_struct flags describing address space
*/
ENTRY(v4_flush_user_cache_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
mov ip, #0
mcreq p15, 0, ip, c7, c7, 0 @ flush ID cache
mov pc, lr
* - end - virtual end address
*/
ENTRY(v4_dma_flush_range)
-#ifdef CPU_CP15
+#ifdef CONFIG_CPU_CP15
mov r0, #0
mcr p15, 0, r0, c7, c7, 0 @ flush ID cache
#endif
if (parent == s3c24xx_pwmclk_tclk(id))
bits = S3C2410_TCFG1_MUX_TCLK << shift;
else if (parent == s3c24xx_pwmclk_tdiv(id))
- bits = clk_pwm_tdiv_bits(to_tdiv(clk)) << shift;
+ bits = clk_pwm_tdiv_bits(to_tdiv(parent)) << shift;
else
return -EINVAL;
} \
}
-#define DEFINE_TIMER(_tmr_no, _irq) \
+#define DEFINE_S3C_TIMER(_tmr_no, _irq) \
.name = "s3c24xx-pwm", \
.id = _tmr_no, \
.num_resources = TIMER_RESOURCE_SIZE, \
*/
struct platform_device s3c_device_timer[] = {
- [0] = { DEFINE_TIMER(0, IRQ_TIMER0) },
- [1] = { DEFINE_TIMER(1, IRQ_TIMER1) },
- [2] = { DEFINE_TIMER(2, IRQ_TIMER2) },
- [3] = { DEFINE_TIMER(3, IRQ_TIMER3) },
- [4] = { DEFINE_TIMER(4, IRQ_TIMER4) },
+ [0] = { DEFINE_S3C_TIMER(0, IRQ_TIMER0) },
+ [1] = { DEFINE_S3C_TIMER(1, IRQ_TIMER1) },
+ [2] = { DEFINE_S3C_TIMER(2, IRQ_TIMER2) },
+ [3] = { DEFINE_S3C_TIMER(3, IRQ_TIMER3) },
+ [4] = { DEFINE_S3C_TIMER(4, IRQ_TIMER4) },
};
static inline int pwm_is_tdiv(struct pwm_device *pwm)
source "drivers/usb/Kconfig"
+source "drivers/uwb/Kconfig"
+
source "arch/cris/Kconfig.debug"
source "security/Kconfig"
source "drivers/usb/Kconfig"
+source "drivers/uwb/Kconfig"
+
endmenu
source "fs/Kconfig"
select HAVE_KRETPROBES
select HAVE_DMA_ATTRS
select HAVE_KVM
+ select HAVE_ARCH_TRACEHOOK
default y
help
The Itanium Processor Family is Intel's 64-bit successor to
bool
default y
+menuconfig PARAVIRT_GUEST
+ bool "Paravirtualized guest support"
+ help
+ Say Y here to get to see options related to running Linux under
+ various hypervisors. This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and disabled.
+
+if PARAVIRT_GUEST
+
+config PARAVIRT
+ bool "Enable paravirtualization code"
+ depends on PARAVIRT_GUEST
+ default y
+ bool
+ default y
+ help
+ This changes the kernel so it can modify itself when it is run
+ under a hypervisor, potentially improving performance significantly
+ over full virtualization. However, when run without a hypervisor
+ the kernel is theoretically slower and slightly larger.
+
+
+source "arch/ia64/xen/Kconfig"
+
+endif
+
choice
prompt "System type"
default IA64_GENERIC
select NUMA
select ACPI_NUMA
select SWIOTLB
+ select PCI_MSI
help
This selects the system type of your hardware. A "generic" kernel
will run on any supported IA-64 system. However, if you configure
generic For any supported IA-64 system
DIG-compliant For DIG ("Developer's Interface Guide") compliant systems
+ DIG+Intel+IOMMU For DIG systems with Intel IOMMU
HP-zx1/sx1000 For HP systems
HP-zx1/sx1000+swiotlb For HP systems with (broken) DMA-constrained devices.
SGI-SN2 For SGI Altix systems
SGI-UV For SGI UV systems
Ski-simulator For the HP simulator <http://www.hpl.hp.com/research/linux/ski/>
+ Xen-domU For xen domU system
If you don't know what to do, choose "generic".
bool "DIG-compliant"
select SWIOTLB
+config IA64_DIG_VTD
+ bool "DIG+Intel+IOMMU"
+ select DMAR
+ select PCI_MSI
+
config IA64_HP_ZX1
bool "HP-zx1/sx1000"
help
bool "Ski-simulator"
select SWIOTLB
+config IA64_XEN_GUEST
+ bool "Xen guest"
+ depends on XEN
+
endchoice
choice
source "drivers/pcmcia/Kconfig"
+config DMAR
+ bool "Support for DMA Remapping Devices (EXPERIMENTAL)"
+ depends on IA64_GENERIC && ACPI && EXPERIMENTAL
+ help
+ DMA remapping (DMAR) devices support enables independent address
+ translations for Direct Memory Access (DMA) from devices.
+ These DMA remapping devices are reported via ACPI tables
+ and include PCI device scope covered by these DMA
+ remapping devices.
+
endmenu
endif
core-y += arch/ia64/kernel/ arch/ia64/mm/
core-$(CONFIG_IA32_SUPPORT) += arch/ia64/ia32/
core-$(CONFIG_IA64_DIG) += arch/ia64/dig/
+core-$(CONFIG_IA64_DIG_VTD) += arch/ia64/dig/
core-$(CONFIG_IA64_GENERIC) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1) += arch/ia64/dig/
core-$(CONFIG_IA64_HP_ZX1_SWIOTLB) += arch/ia64/dig/
+core-$(CONFIG_IA64_XEN_GUEST) += arch/ia64/dig/
core-$(CONFIG_IA64_SGI_SN2) += arch/ia64/sn/
core-$(CONFIG_IA64_SGI_UV) += arch/ia64/uv/
core-$(CONFIG_KVM) += arch/ia64/kvm/
+core-$(CONFIG_XEN) += arch/ia64/xen/
drivers-$(CONFIG_PCI) += arch/ia64/pci/
drivers-$(CONFIG_IA64_HP_SIM) += arch/ia64/hp/sim/
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
+# CONFIG_DMAR is not set
+
#
# Power management and ACPI
#
CONFIG_BINFMT_ELF=y
CONFIG_BINFMT_MISC=m
+# CONFIG_DMAR is not set
+
#
# Power management and ACPI
#
#
obj-y := setup.o
+ifeq ($(CONFIG_DMAR), y)
+obj-$(CONFIG_IA64_GENERIC) += machvec.o machvec_vtd.o dig_vtd_iommu.o
+else
obj-$(CONFIG_IA64_GENERIC) += machvec.o
+endif
+obj-$(CONFIG_IA64_DIG_VTD) += dig_vtd_iommu.o
--- /dev/null
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/intel-iommu.h>
+
+void *
+vtd_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ gfp_t flags)
+{
+ return intel_alloc_coherent(dev, size, dma_handle, flags);
+}
+EXPORT_SYMBOL_GPL(vtd_alloc_coherent);
+
+void
+vtd_free_coherent(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
+{
+ intel_free_coherent(dev, size, vaddr, dma_handle);
+}
+EXPORT_SYMBOL_GPL(vtd_free_coherent);
+
+dma_addr_t
+vtd_map_single_attrs(struct device *dev, void *addr, size_t size,
+ int dir, struct dma_attrs *attrs)
+{
+ return intel_map_single(dev, (phys_addr_t)addr, size, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_map_single_attrs);
+
+void
+vtd_unmap_single_attrs(struct device *dev, dma_addr_t iova, size_t size,
+ int dir, struct dma_attrs *attrs)
+{
+ intel_unmap_single(dev, iova, size, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_unmap_single_attrs);
+
+int
+vtd_map_sg_attrs(struct device *dev, struct scatterlist *sglist, int nents,
+ int dir, struct dma_attrs *attrs)
+{
+ return intel_map_sg(dev, sglist, nents, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_map_sg_attrs);
+
+void
+vtd_unmap_sg_attrs(struct device *dev, struct scatterlist *sglist,
+ int nents, int dir, struct dma_attrs *attrs)
+{
+ intel_unmap_sg(dev, sglist, nents, dir);
+}
+EXPORT_SYMBOL_GPL(vtd_unmap_sg_attrs);
+
+int
+vtd_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return 0;
+}
+EXPORT_SYMBOL_GPL(vtd_dma_mapping_error);
--- /dev/null
+#define MACHVEC_PLATFORM_NAME dig_vtd
+#define MACHVEC_PLATFORM_HEADER <asm/machvec_dig_vtd.h>
+#include <asm/machvec_init.h>
;;
st8 [r2]=r3 // initialize return code to -ENOSYS
br.call.sptk.few rp=syscall_trace_enter // give parent a chance to catch syscall args
+ cmp.lt p6,p0=r8,r0 // check tracehook
+ adds r2=IA64_PT_REGS_R8_OFFSET+16,sp // r2 = &pt_regs.r8
+ ;;
+(p6) st8.spill [r2]=r8 // store return value in slot for r8
+(p6) br.spnt.few .ret4
.ret2: // Need to reload arguments (they may be changed by the tracing process)
adds r2=IA64_PT_REGS_R1_OFFSET+16,sp // r2 = &pt_regs.r1
adds r3=IA64_PT_REGS_R13_OFFSET+16,sp // r3 = &pt_regs.r13
data8 sys_setuid /* 16-bit version */
data8 sys_getuid /* 16-bit version */
data8 compat_sys_stime /* 25 */
- data8 sys32_ptrace
+ data8 compat_sys_ptrace
data8 sys32_alarm
data8 sys_ni_syscall
- data8 sys32_pause
+ data8 sys_pause
data8 compat_sys_utime /* 30 */
data8 sys_ni_syscall /* old stty syscall holder */
data8 sys_ni_syscall /* old gtty syscall holder */
data8 sys_mkdir
data8 sys_rmdir /* 40 */
data8 sys_dup
- data8 sys32_pipe
+ data8 sys_pipe
data8 compat_sys_times
data8 sys_ni_syscall /* old prof syscall holder */
data8 sys32_brk /* 45 */
return ret;
}
-asmlinkage long
-sys32_pipe (int __user *fd)
-{
- int retval;
- int fds[2];
-
- retval = do_pipe_flags(fds, 0);
- if (retval)
- goto out;
- if (copy_to_user(fd, fds, sizeof(fds)))
- retval = -EFAULT;
- out:
- return retval;
-}
-
asmlinkage unsigned long
sys32_alarm (unsigned int seconds)
{
return compat_sys_wait4(pid, stat_addr, options, NULL);
}
-static unsigned int
-ia32_peek (struct task_struct *child, unsigned long addr, unsigned int *val)
-{
- size_t copied;
- unsigned int ret;
-
- copied = access_process_vm(child, addr, val, sizeof(*val), 0);
- return (copied != sizeof(ret)) ? -EIO : 0;
-}
-
-static unsigned int
-ia32_poke (struct task_struct *child, unsigned long addr, unsigned int val)
-{
-
- if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val))
- return -EIO;
- return 0;
-}
-
/*
* The order in which registers are stored in the ptrace regs structure
*/
return 0;
}
-asmlinkage long
-sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data)
+long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
+ compat_ulong_t caddr, compat_ulong_t cdata)
{
- struct task_struct *child;
- unsigned int value, tmp;
+ unsigned long addr = caddr;
+ unsigned long data = cdata;
+ unsigned int tmp;
long i, ret;
- lock_kernel();
- if (request == PTRACE_TRACEME) {
- ret = ptrace_traceme();
- goto out;
- }
-
- child = ptrace_get_task_struct(pid);
- if (IS_ERR(child)) {
- ret = PTR_ERR(child);
- goto out;
- }
-
- if (request == PTRACE_ATTACH) {
- ret = sys_ptrace(request, pid, addr, data);
- goto out_tsk;
- }
-
- ret = ptrace_check_attach(child, request == PTRACE_KILL);
- if (ret < 0)
- goto out_tsk;
-
switch (request) {
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA: /* read word at location addr */
- ret = ia32_peek(child, addr, &value);
- if (ret == 0)
- ret = put_user(value, (unsigned int __user *) compat_ptr(data));
- else
- ret = -EIO;
- goto out_tsk;
-
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA: /* write the word at location addr */
- ret = ia32_poke(child, addr, data);
- goto out_tsk;
-
case PTRACE_PEEKUSR: /* read word at addr in USER area */
ret = -EIO;
if ((addr & 3) || addr > 17*sizeof(int))
compat_ptr(data));
break;
- case PTRACE_GETEVENTMSG:
- ret = put_user(child->ptrace_message, (unsigned int __user *) compat_ptr(data));
- break;
-
- case PTRACE_SYSCALL: /* continue, stop after next syscall */
- case PTRACE_CONT: /* restart after signal. */
- case PTRACE_KILL:
- case PTRACE_SINGLESTEP: /* execute chile for one instruction */
- case PTRACE_DETACH: /* detach a process */
- ret = sys_ptrace(request, pid, addr, data);
- break;
-
default:
- ret = ptrace_request(child, request, addr, data);
- break;
-
+ return compat_ptrace_request(child, request, caddr, cdata);
}
- out_tsk:
- put_task_struct(child);
- out:
- unlock_kernel();
return ret;
}
}
asmlinkage int
-sys32_pause (void)
-{
- current->state = TASK_INTERRUPTIBLE;
- schedule();
- return -ERESTARTNOHAND;
-}
-
-asmlinkage int
sys32_msync (unsigned int start, unsigned int len, int flags)
{
unsigned int addr;
*/
#define __IA64_BREAK_SYSCALL 0x100000
+/*
+ * Xen specific break numbers:
+ */
+#define __IA64_XEN_HYPERCALL 0x1000
+/* [__IA64_XEN_HYPERPRIVOP_START, __IA64_XEN_HYPERPRIVOP_MAX] is used
+ for xen hyperprivops */
+#define __IA64_XEN_HYPERPRIVOP_START 0x1
+#define __IA64_XEN_HYPERPRIVOP_MAX 0x1a
+
#endif /* _ASM_IA64_BREAK_H */
#define flush_dcache_mmap_unlock(mapping) do { } while (0)
extern void flush_icache_range (unsigned long start, unsigned long end);
+extern void clflush_cache_range(void *addr, int size);
+
#define flush_icache_user_range(vma, page, user_addr, len) \
do { \
#ifdef CONFIG_ACPI
void *acpi_handle;
#endif
+#ifdef CONFIG_DMAR
+ void *iommu; /* hook for IOMMU specific extension */
+#endif
};
#endif /* _ASM_IA64_DEVICE_H */
*/
#include <asm/machvec.h>
#include <linux/scatterlist.h>
+#include <asm/swiotlb.h>
+
+struct dma_mapping_ops {
+ int (*mapping_error)(struct device *dev,
+ dma_addr_t dma_addr);
+ void* (*alloc_coherent)(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, gfp_t gfp);
+ void (*free_coherent)(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+ dma_addr_t (*map_single)(struct device *hwdev, unsigned long ptr,
+ size_t size, int direction);
+ void (*unmap_single)(struct device *dev, dma_addr_t addr,
+ size_t size, int direction);
+ void (*sync_single_for_cpu)(struct device *hwdev,
+ dma_addr_t dma_handle, size_t size,
+ int direction);
+ void (*sync_single_for_device)(struct device *hwdev,
+ dma_addr_t dma_handle, size_t size,
+ int direction);
+ void (*sync_single_range_for_cpu)(struct device *hwdev,
+ dma_addr_t dma_handle, unsigned long offset,
+ size_t size, int direction);
+ void (*sync_single_range_for_device)(struct device *hwdev,
+ dma_addr_t dma_handle, unsigned long offset,
+ size_t size, int direction);
+ void (*sync_sg_for_cpu)(struct device *hwdev,
+ struct scatterlist *sg, int nelems,
+ int direction);
+ void (*sync_sg_for_device)(struct device *hwdev,
+ struct scatterlist *sg, int nelems,
+ int direction);
+ int (*map_sg)(struct device *hwdev, struct scatterlist *sg,
+ int nents, int direction);
+ void (*unmap_sg)(struct device *hwdev,
+ struct scatterlist *sg, int nents,
+ int direction);
+ int (*dma_supported_op)(struct device *hwdev, u64 mask);
+ int is_phys;
+};
+
+extern struct dma_mapping_ops *dma_ops;
+extern struct ia64_machine_vector ia64_mv;
+extern void set_iommu_machvec(void);
#define dma_alloc_coherent(dev, size, handle, gfp) \
platform_dma_alloc_coherent(dev, size, handle, (gfp) | GFP_DMA)
#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
+static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
+{
+ return dma_ops;
+}
+
+
+
#endif /* _ASM_IA64_DMA_MAPPING_H */
--- /dev/null
+#ifndef _ASM_IA64_IOMMU_H
+#define _ASM_IA64_IOMMU_H 1
+
+#define cpu_has_x2apic 0
+/* 10 seconds */
+#define DMAR_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
+
+extern void pci_iommu_shutdown(void);
+extern void no_iommu_init(void);
+extern int force_iommu, no_iommu;
+extern int iommu_detected;
+extern void iommu_dma_init(void);
+extern void machvec_init(const char *name);
+extern int forbid_dac;
+
+#endif
#define IA64_TR_CURRENT_STACK 1 /* dtr1: maps kernel's memory- & register-stacks */
#define IA64_TR_ALLOC_BASE 2 /* itr&dtr: Base of dynamic TR resource*/
-#define IA64_TR_ALLOC_MAX 32 /* Max number for dynamic use*/
+#define IA64_TR_ALLOC_MAX 64 /* Max number for dynamic use*/
/* Processor status register bits: */
#define IA64_PSR_BE_BIT 1
# include <asm/machvec_hpsim.h>
# elif defined (CONFIG_IA64_DIG)
# include <asm/machvec_dig.h>
+# elif defined(CONFIG_IA64_DIG_VTD)
+# include <asm/machvec_dig_vtd.h>
# elif defined (CONFIG_IA64_HP_ZX1)
# include <asm/machvec_hpzx1.h>
# elif defined (CONFIG_IA64_HP_ZX1_SWIOTLB)
# include <asm/machvec_sn2.h>
# elif defined (CONFIG_IA64_SGI_UV)
# include <asm/machvec_uv.h>
+# elif defined (CONFIG_IA64_XEN_GUEST)
+# include <asm/machvec_xen.h>
# elif defined (CONFIG_IA64_GENERIC)
# ifdef MACHVEC_PLATFORM_HEADER
--- /dev/null
+#ifndef _ASM_IA64_MACHVEC_DIG_VTD_h
+#define _ASM_IA64_MACHVEC_DIG_VTD_h
+
+extern ia64_mv_setup_t dig_setup;
+extern ia64_mv_dma_alloc_coherent vtd_alloc_coherent;
+extern ia64_mv_dma_free_coherent vtd_free_coherent;
+extern ia64_mv_dma_map_single_attrs vtd_map_single_attrs;
+extern ia64_mv_dma_unmap_single_attrs vtd_unmap_single_attrs;
+extern ia64_mv_dma_map_sg_attrs vtd_map_sg_attrs;
+extern ia64_mv_dma_unmap_sg_attrs vtd_unmap_sg_attrs;
+extern ia64_mv_dma_supported iommu_dma_supported;
+extern ia64_mv_dma_mapping_error vtd_dma_mapping_error;
+extern ia64_mv_dma_init pci_iommu_alloc;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure. When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name "dig_vtd"
+#define platform_setup dig_setup
+#define platform_dma_init pci_iommu_alloc
+#define platform_dma_alloc_coherent vtd_alloc_coherent
+#define platform_dma_free_coherent vtd_free_coherent
+#define platform_dma_map_single_attrs vtd_map_single_attrs
+#define platform_dma_unmap_single_attrs vtd_unmap_single_attrs
+#define platform_dma_map_sg_attrs vtd_map_sg_attrs
+#define platform_dma_unmap_sg_attrs vtd_unmap_sg_attrs
+#define platform_dma_sync_single_for_cpu machvec_dma_sync_single
+#define platform_dma_sync_sg_for_cpu machvec_dma_sync_sg
+#define platform_dma_sync_single_for_device machvec_dma_sync_single
+#define platform_dma_sync_sg_for_device machvec_dma_sync_sg
+#define platform_dma_supported iommu_dma_supported
+#define platform_dma_mapping_error vtd_dma_mapping_error
+
+#endif /* _ASM_IA64_MACHVEC_DIG_VTD_h */
+#include <asm/iommu.h>
#include <asm/machvec.h>
extern ia64_mv_send_ipi_t ia64_send_ipi;
--- /dev/null
+#ifndef _ASM_IA64_MACHVEC_XEN_h
+#define _ASM_IA64_MACHVEC_XEN_h
+
+extern ia64_mv_setup_t dig_setup;
+extern ia64_mv_cpu_init_t xen_cpu_init;
+extern ia64_mv_irq_init_t xen_irq_init;
+extern ia64_mv_send_ipi_t xen_platform_send_ipi;
+
+/*
+ * This stuff has dual use!
+ *
+ * For a generic kernel, the macros are used to initialize the
+ * platform's machvec structure. When compiling a non-generic kernel,
+ * the macros are used directly.
+ */
+#define platform_name "xen"
+#define platform_setup dig_setup
+#define platform_cpu_init xen_cpu_init
+#define platform_irq_init xen_irq_init
+#define platform_send_ipi xen_platform_send_ipi
+
+#endif /* _ASM_IA64_MACHVEC_XEN_h */
* - crash dumping code reserved region
* - Kernel memory map built from EFI memory map
* - ELF core header
+ * - xen start info if CONFIG_XEN
*
* More could be added if necessary
*/
-#define IA64_MAX_RSVD_REGIONS 8
+#define IA64_MAX_RSVD_REGIONS 9
struct rsvd_region {
unsigned long start; /* virtual address of beginning of element */
;; \
movl clob = PARAVIRT_POISON; \
;;
+# define CLOBBER_PRED(pred_clob) \
+ ;; \
+ cmp.eq pred_clob, p0 = r0, r0 \
+ ;;
#else
-# define CLOBBER(clob) /* nothing */
+# define CLOBBER(clob) /* nothing */
+# define CLOBBER_PRED(pred_clob) /* nothing */
#endif
#define MOV_FROM_IFA(reg) \
#define SSM_PSR_I(pred, pred_clob, clob) \
(pred) ssm psr.i \
- CLOBBER(clob)
+ CLOBBER(clob) \
+ CLOBBER_PRED(pred_clob)
#define RSM_PSR_I(pred, clob0, clob1) \
(pred) rsm psr.i \
--- /dev/null
+#ifndef _ASM_NATIVE_PVCHK_INST_H
+#define _ASM_NATIVE_PVCHK_INST_H
+
+/******************************************************************************
+ * arch/ia64/include/asm/native/pvchk_inst.h
+ * Checker for paravirtualizations of privileged operations.
+ *
+ * Copyright (C) 2005 Hewlett-Packard Co
+ * Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+/**********************************************
+ * Instructions paravirtualized for correctness
+ **********************************************/
+
+/* "fc" and "thash" are privilege-sensitive instructions, meaning they
+ * may have different semantics depending on whether they are executed
+ * at PL0 vs PL!=0. When paravirtualized, these instructions mustn't
+ * be allowed to execute directly, lest incorrect semantics result.
+ */
+
+#define fc .error "fc should not be used directly."
+#define thash .error "thash should not be used directly."
+
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ * and the semantics of cover only change if psr.ic is off which is very
+ * rare (and currently non-existent outside of assembly code
+ */
+#define ttag .error "ttag should not be used directly."
+#define cover .error "cover should not be used directly."
+
+/* There are also privilege-sensitive registers. These registers are
+ * readable at any privilege level but only writable at PL0.
+ */
+#define cpuid .error "cpuid should not be used directly."
+#define pmd .error "pmd should not be used directly."
+
+/*
+ * mov ar.eflag =
+ * mov = ar.eflag
+ */
+
+/**********************************************
+ * Instructions paravirtualized for performance
+ **********************************************/
+/*
+ * Those instructions include '.' which can't be handled by cpp.
+ * or can't be handled by cpp easily.
+ * They are handled by sed instead of cpp.
+ */
+
+/* for .S
+ * itc.i
+ * itc.d
+ *
+ * bsw.0
+ * bsw.1
+ *
+ * ssm psr.ic | PSR_DEFAULT_BITS
+ * ssm psr.ic
+ * rsm psr.ic
+ * ssm psr.i
+ * rsm psr.i
+ * rsm psr.i | psr.ic
+ * rsm psr.dt
+ * ssm psr.dt
+ *
+ * mov = cr.ifa
+ * mov = cr.itir
+ * mov = cr.isr
+ * mov = cr.iha
+ * mov = cr.ipsr
+ * mov = cr.iim
+ * mov = cr.iip
+ * mov = cr.ivr
+ * mov = psr
+ *
+ * mov cr.ifa =
+ * mov cr.itir =
+ * mov cr.iha =
+ * mov cr.ipsr =
+ * mov cr.ifs =
+ * mov cr.iip =
+ * mov cr.kr =
+ */
+
+/* for intrinsics
+ * ssm psr.i
+ * rsm psr.i
+ * mov = psr
+ * mov = ivr
+ * mov = tpr
+ * mov cr.itm =
+ * mov eoi =
+ * mov rr[] =
+ * mov = rr[]
+ * mov = kr
+ * mov kr =
+ * ptc.ga
+ */
+
+/*************************************************************
+ * define paravirtualized instrcution macros as nop to ingore.
+ * and check whether arguments are appropriate.
+ *************************************************************/
+
+/* check whether reg is a regular register */
+.macro is_rreg_in reg
+ .ifc "\reg", "r0"
+ nop 0
+ .exitm
+ .endif
+ ;;
+ mov \reg = r0
+ ;;
+.endm
+#define IS_RREG_IN(reg) is_rreg_in reg ;
+
+#define IS_RREG_OUT(reg) \
+ ;; \
+ mov reg = r0 \
+ ;;
+
+#define IS_RREG_CLOB(reg) IS_RREG_OUT(reg)
+
+/* check whether pred is a predicate register */
+#define IS_PRED_IN(pred) \
+ ;; \
+ (pred) nop 0 \
+ ;;
+
+#define IS_PRED_OUT(pred) \
+ ;; \
+ cmp.eq pred, p0 = r0, r0 \
+ ;;
+
+#define IS_PRED_CLOB(pred) IS_PRED_OUT(pred)
+
+
+#define DO_SAVE_MIN(__COVER, SAVE_IFS, EXTRA, WORKAROUND) \
+ nop 0
+#define MOV_FROM_IFA(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_ITIR(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_ISR(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_IHA(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_IPSR(pred, reg) \
+ IS_PRED_IN(pred) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_IIM(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_IIP(reg) \
+ IS_RREG_OUT(reg)
+#define MOV_FROM_IVR(reg, clob) \
+ IS_RREG_OUT(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_FROM_PSR(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_OUT(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_IFA(reg, clob) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_ITIR(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_IHA(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_IPSR(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_IFS(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_IIP(reg, clob) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define MOV_TO_KR(kr, reg, clob0, clob1) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1)
+#define ITC_I(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define ITC_D(pred, reg, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define ITC_I_AND_D(pred_i, pred_d, reg, clob) \
+ IS_PRED_IN(pred_i) \
+ IS_PRED_IN(pred_d) \
+ IS_RREG_IN(reg) \
+ IS_RREG_CLOB(clob)
+#define THASH(pred, reg0, reg1, clob) \
+ IS_PRED_IN(pred) \
+ IS_RREG_OUT(reg0) \
+ IS_RREG_IN(reg1) \
+ IS_RREG_CLOB(clob)
+#define SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(clob0, clob1) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1)
+#define SSM_PSR_IC_AND_SRLZ_D(clob0, clob1) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1)
+#define RSM_PSR_IC(clob) \
+ IS_RREG_CLOB(clob)
+#define SSM_PSR_I(pred, pred_clob, clob) \
+ IS_PRED_IN(pred) \
+ IS_PRED_CLOB(pred_clob) \
+ IS_RREG_CLOB(clob)
+#define RSM_PSR_I(pred, clob0, clob1) \
+ IS_PRED_IN(pred) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1)
+#define RSM_PSR_I_IC(clob0, clob1, clob2) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1) \
+ IS_RREG_CLOB(clob2)
+#define RSM_PSR_DT \
+ nop 0
+#define SSM_PSR_DT_AND_SRLZ_I \
+ nop 0
+#define BSW_0(clob0, clob1, clob2) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1) \
+ IS_RREG_CLOB(clob2)
+#define BSW_1(clob0, clob1) \
+ IS_RREG_CLOB(clob0) \
+ IS_RREG_CLOB(clob1)
+#define COVER \
+ nop 0
+#define RFI \
+ br.ret.sptk.many rp /* defining nop causes dependency error */
+
+#endif /* _ASM_NATIVE_PVCHK_INST_H */
struct pv_iosapic_ops {
void (*pcat_compat_init)(void);
- struct irq_chip *(*get_irq_chip)(unsigned long trigger);
+ struct irq_chip *(*__get_irq_chip)(unsigned long trigger);
unsigned int (*__read)(char __iomem *iosapic, unsigned int reg);
void (*__write)(char __iomem *iosapic, unsigned int reg, u32 val);
static inline struct irq_chip*
iosapic_get_irq_chip(unsigned long trigger)
{
- return pv_iosapic_ops.get_irq_chip(trigger);
+ return pv_iosapic_ops.__get_irq_chip(trigger);
}
static inline unsigned int
return channel ? isa_irq_to_vector(15) : isa_irq_to_vector(14);
}
+#ifdef CONFIG_DMAR
+extern void pci_iommu_alloc(void);
+#endif
#endif /* _ASM_IA64_PCI_H */
*/
# define instruction_pointer(regs) ((regs)->cr_iip + ia64_psr(regs)->ri)
+static inline unsigned long user_stack_pointer(struct pt_regs *regs)
+{
+ /* FIXME: should this be bspstore + nr_dirty regs? */
+ return regs->ar_bspstore;
+}
+
#define regs_return_value(regs) ((regs)->r8)
/* Conserve space in histogram by encoding slot bits in address
#define arch_has_block_step() (1)
extern void user_enable_block_step(struct task_struct *);
+#define __ARCH_WANT_COMPAT_SYS_PTRACE
+
#endif /* !__KERNEL__ */
/* pt_all_user_regs is used for PTRACE_GETREGS PTRACE_SETREGS */
--- /dev/null
+/*
+ * same structure to x86's
+ * Hopefully asm-x86/pvclock-abi.h would be moved to somewhere more generic.
+ * For now, define same duplicated definitions.
+ */
+
+#ifndef _ASM_IA64__PVCLOCK_ABI_H
+#define _ASM_IA64__PVCLOCK_ABI_H
+#ifndef __ASSEMBLY__
+
+/*
+ * These structs MUST NOT be changed.
+ * They are the ABI between hypervisor and guest OS.
+ * Both Xen and KVM are using this.
+ *
+ * pvclock_vcpu_time_info holds the system time and the tsc timestamp
+ * of the last update. So the guest can use the tsc delta to get a
+ * more precise system time. There is one per virtual cpu.
+ *
+ * pvclock_wall_clock references the point in time when the system
+ * time was zero (usually boot time), thus the guest calculates the
+ * current wall clock by adding the system time.
+ *
+ * Protocol for the "version" fields is: hypervisor raises it (making
+ * it uneven) before it starts updating the fields and raises it again
+ * (making it even) when it is done. Thus the guest can make sure the
+ * time values it got are consistent by checking the version before
+ * and after reading them.
+ */
+
+struct pvclock_vcpu_time_info {
+ u32 version;
+ u32 pad0;
+ u64 tsc_timestamp;
+ u64 system_time;
+ u32 tsc_to_system_mul;
+ s8 tsc_shift;
+ u8 pad[3];
+} __attribute__((__packed__)); /* 32 bytes */
+
+struct pvclock_wall_clock {
+ u32 version;
+ u32 sec;
+ u32 nsec;
+} __attribute__((__packed__));
+
+#endif /* __ASSEMBLY__ */
+#endif /* _ASM_IA64__PVCLOCK_ABI_H */
--- /dev/null
+#ifndef ASM_IA64__SWIOTLB_H
+#define ASM_IA64__SWIOTLB_H
+
+#include <linux/dma-mapping.h>
+
+/* SWIOTLB interface */
+
+extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
+ size_t size, int dir);
+extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flags);
+extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
+ size_t size, int dir);
+extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
+ dma_addr_t dev_addr,
+ size_t size, int dir);
+extern void swiotlb_sync_single_for_device(struct device *hwdev,
+ dma_addr_t dev_addr,
+ size_t size, int dir);
+extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
+ dma_addr_t dev_addr,
+ unsigned long offset,
+ size_t size, int dir);
+extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
+ dma_addr_t dev_addr,
+ unsigned long offset,
+ size_t size, int dir);
+extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
+ struct scatterlist *sg, int nelems,
+ int dir);
+extern void swiotlb_sync_sg_for_device(struct device *hwdev,
+ struct scatterlist *sg, int nelems,
+ int dir);
+extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
+ int nents, int direction);
+extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
+ int nents, int direction);
+extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
+extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
+extern void swiotlb_init(void);
+
+extern int swiotlb_force;
+
+#ifdef CONFIG_SWIOTLB
+extern int swiotlb;
+extern void pci_swiotlb_init(void);
+#else
+#define swiotlb 0
+static inline void pci_swiotlb_init(void)
+{
+}
+#endif
+
+#endif /* ASM_IA64__SWIOTLB_H */
--- /dev/null
+#ifndef _ASM_IA64_SYNC_BITOPS_H
+#define _ASM_IA64_SYNC_BITOPS_H
+
+/*
+ * Copyright (C) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ *
+ * Based on synch_bitops.h which Dan Magenhaimer wrote.
+ *
+ * bit operations which provide guaranteed strong synchronisation
+ * when communicating with Xen or other guest OSes running on other CPUs.
+ */
+
+static inline void sync_set_bit(int nr, volatile void *addr)
+{
+ set_bit(nr, addr);
+}
+
+static inline void sync_clear_bit(int nr, volatile void *addr)
+{
+ clear_bit(nr, addr);
+}
+
+static inline void sync_change_bit(int nr, volatile void *addr)
+{
+ change_bit(nr, addr);
+}
+
+static inline int sync_test_and_set_bit(int nr, volatile void *addr)
+{
+ return test_and_set_bit(nr, addr);
+}
+
+static inline int sync_test_and_clear_bit(int nr, volatile void *addr)
+{
+ return test_and_clear_bit(nr, addr);
+}
+
+static inline int sync_test_and_change_bit(int nr, volatile void *addr)
+{
+ return test_and_change_bit(nr, addr);
+}
+
+static inline int sync_test_bit(int nr, const volatile void *addr)
+{
+ return test_bit(nr, addr);
+}
+
+#define sync_cmpxchg(ptr, old, new) \
+ ((__typeof__(*(ptr)))cmpxchg_acq((ptr), (old), (new)))
+
+#endif /* _ASM_IA64_SYNC_BITOPS_H */
--- /dev/null
+/*
+ * Access to user system call parameters and results
+ *
+ * Copyright (C) 2008 Intel Corp. Shaohua Li <shaohua.li@intel.com>
+ *
+ * This copyrighted material is made available to anyone wishing to use,
+ * modify, copy, or redistribute it subject to the terms and conditions
+ * of the GNU General Public License v.2.
+ *
+ * See asm-generic/syscall.h for descriptions of what we must do here.
+ */
+
+#ifndef _ASM_SYSCALL_H
+#define _ASM_SYSCALL_H 1
+
+#include <linux/sched.h>
+#include <linux/err.h>
+
+static inline long syscall_get_nr(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ if ((long)regs->cr_ifs < 0) /* Not a syscall */
+ return -1;
+
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs))
+ return regs->r1;
+#endif
+
+ return regs->r15;
+}
+
+static inline void syscall_rollback(struct task_struct *task,
+ struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs))
+ regs->r8 = regs->r1;
+#endif
+
+ /* do nothing */
+}
+
+static inline long syscall_get_error(struct task_struct *task,
+ struct pt_regs *regs)
+{
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs))
+ return regs->r8;
+#endif
+
+ return regs->r10 == -1 ? regs->r8:0;
+}
+
+static inline long syscall_get_return_value(struct task_struct *task,
+ struct pt_regs *regs)
+{
+ return regs->r8;
+}
+
+static inline void syscall_set_return_value(struct task_struct *task,
+ struct pt_regs *regs,
+ int error, long val)
+{
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs)) {
+ regs->r8 = (long) error ? error : val;
+ return;
+ }
+#endif
+
+ if (error) {
+ /* error < 0, but ia64 uses > 0 return value */
+ regs->r8 = -error;
+ regs->r10 = -1;
+ } else {
+ regs->r8 = val;
+ regs->r10 = 0;
+ }
+}
+
+extern void ia64_syscall_get_set_arguments(struct task_struct *task,
+ struct pt_regs *regs, unsigned int i, unsigned int n,
+ unsigned long *args, int rw);
+static inline void syscall_get_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ unsigned int i, unsigned int n,
+ unsigned long *args)
+{
+ BUG_ON(i + n > 6);
+
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs)) {
+ switch (i + n) {
+ case 6:
+ if (!n--) break;
+ *args++ = regs->r13;
+ case 5:
+ if (!n--) break;
+ *args++ = regs->r15;
+ case 4:
+ if (!n--) break;
+ *args++ = regs->r14;
+ case 3:
+ if (!n--) break;
+ *args++ = regs->r10;
+ case 2:
+ if (!n--) break;
+ *args++ = regs->r9;
+ case 1:
+ if (!n--) break;
+ *args++ = regs->r11;
+ case 0:
+ if (!n--) break;
+ default:
+ BUG();
+ break;
+ }
+
+ return;
+ }
+#endif
+ ia64_syscall_get_set_arguments(task, regs, i, n, args, 0);
+}
+
+static inline void syscall_set_arguments(struct task_struct *task,
+ struct pt_regs *regs,
+ unsigned int i, unsigned int n,
+ unsigned long *args)
+{
+ BUG_ON(i + n > 6);
+
+#ifdef CONFIG_IA32_SUPPORT
+ if (IS_IA32_PROCESS(regs)) {
+ switch (i + n) {
+ case 6:
+ if (!n--) break;
+ regs->r13 = *args++;
+ case 5:
+ if (!n--) break;
+ regs->r15 = *args++;
+ case 4:
+ if (!n--) break;
+ regs->r14 = *args++;
+ case 3:
+ if (!n--) break;
+ regs->r10 = *args++;
+ case 2:
+ if (!n--) break;
+ regs->r9 = *args++;
+ case 1:
+ if (!n--) break;
+ regs->r11 = *args++;
+ case 0:
+ if (!n--) break;
+ }
+
+ return;
+ }
+#endif
+ ia64_syscall_get_set_arguments(task, regs, i, n, args, 1);
+}
+#endif /* _ASM_SYSCALL_H */
#define alloc_task_struct() ((struct task_struct *)__get_free_pages(GFP_KERNEL | __GFP_COMP, KERNEL_STACK_SIZE_ORDER))
#define free_task_struct(tsk) free_pages((unsigned long) (tsk), KERNEL_STACK_SIZE_ORDER)
-#define tsk_set_notify_resume(tsk) \
- set_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME)
-extern void tsk_clear_notify_resume(struct task_struct *tsk);
#endif /* !__ASSEMBLY */
/*
return ret;
}
+extern void ia64_cpu_local_tick (void);
+
#endif /* _ASM_IA64_TIMEX_H */
# define __ARCH_WANT_SYS_NICE
# define __ARCH_WANT_SYS_OLD_GETRLIMIT
# define __ARCH_WANT_SYS_OLDUMOUNT
+# define __ARCH_WANT_SYS_PAUSE
# define __ARCH_WANT_SYS_SIGPENDING
# define __ARCH_WANT_SYS_SIGPROCMASK
# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
--- /dev/null
+/******************************************************************************
+ * arch/ia64/include/asm/xen/events.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+#ifndef _ASM_IA64_XEN_EVENTS_H
+#define _ASM_IA64_XEN_EVENTS_H
+
+enum ipi_vector {
+ XEN_RESCHEDULE_VECTOR,
+ XEN_IPI_VECTOR,
+ XEN_CMCP_VECTOR,
+ XEN_CPEP_VECTOR,
+
+ XEN_NR_IPIS,
+};
+
+static inline int xen_irqs_disabled(struct pt_regs *regs)
+{
+ return !(ia64_psr(regs)->i);
+}
+
+static inline void xen_do_IRQ(int irq, struct pt_regs *regs)
+{
+ struct pt_regs *old_regs;
+ old_regs = set_irq_regs(regs);
+ irq_enter();
+ __do_IRQ(irq);
+ irq_exit();
+ set_irq_regs(old_regs);
+}
+#define irq_ctx_init(cpu) do { } while (0)
+
+#endif /* _ASM_IA64_XEN_EVENTS_H */
--- /dev/null
+/******************************************************************************
+ * arch/ia64/include/asm/xen/grant_table.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_GRANT_TABLE_H
+#define _ASM_IA64_XEN_GRANT_TABLE_H
+
+struct vm_struct *xen_alloc_vm_area(unsigned long size);
+void xen_free_vm_area(struct vm_struct *area);
+
+#endif /* _ASM_IA64_XEN_GRANT_TABLE_H */
--- /dev/null
+/******************************************************************************
+ * hypercall.h
+ *
+ * Linux-specific hypervisor handling.
+ *
+ * Copyright (c) 2002-2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _ASM_IA64_XEN_HYPERCALL_H
+#define _ASM_IA64_XEN_HYPERCALL_H
+
+#include <xen/interface/xen.h>
+#include <xen/interface/physdev.h>
+#include <xen/interface/sched.h>
+#include <asm/xen/xcom_hcall.h>
+struct xencomm_handle;
+extern unsigned long __hypercall(unsigned long a1, unsigned long a2,
+ unsigned long a3, unsigned long a4,
+ unsigned long a5, unsigned long cmd);
+
+/*
+ * Assembler stubs for hyper-calls.
+ */
+
+#define _hypercall0(type, name) \
+({ \
+ long __res; \
+ __res = __hypercall(0, 0, 0, 0, 0, __HYPERVISOR_##name);\
+ (type)__res; \
+})
+
+#define _hypercall1(type, name, a1) \
+({ \
+ long __res; \
+ __res = __hypercall((unsigned long)a1, \
+ 0, 0, 0, 0, __HYPERVISOR_##name); \
+ (type)__res; \
+})
+
+#define _hypercall2(type, name, a1, a2) \
+({ \
+ long __res; \
+ __res = __hypercall((unsigned long)a1, \
+ (unsigned long)a2, \
+ 0, 0, 0, __HYPERVISOR_##name); \
+ (type)__res; \
+})
+
+#define _hypercall3(type, name, a1, a2, a3) \
+({ \
+ long __res; \
+ __res = __hypercall((unsigned long)a1, \
+ (unsigned long)a2, \
+ (unsigned long)a3, \
+ 0, 0, __HYPERVISOR_##name); \
+ (type)__res; \
+})
+
+#define _hypercall4(type, name, a1, a2, a3, a4) \
+({ \
+ long __res; \
+ __res = __hypercall((unsigned long)a1, \
+ (unsigned long)a2, \
+ (unsigned long)a3, \
+ (unsigned long)a4, \
+ 0, __HYPERVISOR_##name); \
+ (type)__res; \
+})
+
+#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
+({ \
+ long __res; \
+ __res = __hypercall((unsigned long)a1, \
+ (unsigned long)a2, \
+ (unsigned long)a3, \
+ (unsigned long)a4, \
+ (unsigned long)a5, \
+ __HYPERVISOR_##name); \
+ (type)__res; \
+})
+
+
+static inline int
+xencomm_arch_hypercall_sched_op(int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, sched_op_new, cmd, arg);
+}
+
+static inline long
+HYPERVISOR_set_timer_op(u64 timeout)
+{
+ unsigned long timeout_hi = (unsigned long)(timeout >> 32);
+ unsigned long timeout_lo = (unsigned long)timeout;
+ return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
+}
+
+static inline int
+xencomm_arch_hypercall_multicall(struct xencomm_handle *call_list,
+ int nr_calls)
+{
+ return _hypercall2(int, multicall, call_list, nr_calls);
+}
+
+static inline int
+xencomm_arch_hypercall_memory_op(unsigned int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, memory_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_event_channel_op(int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, event_channel_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_xen_version(int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, xen_version, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_console_io(int cmd, int count,
+ struct xencomm_handle *str)
+{
+ return _hypercall3(int, console_io, cmd, count, str);
+}
+
+static inline int
+xencomm_arch_hypercall_physdev_op(int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, physdev_op, cmd, arg);
+}
+
+static inline int
+xencomm_arch_hypercall_grant_table_op(unsigned int cmd,
+ struct xencomm_handle *uop,
+ unsigned int count)
+{
+ return _hypercall3(int, grant_table_op, cmd, uop, count);
+}
+
+int HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count);
+
+extern int xencomm_arch_hypercall_suspend(struct xencomm_handle *arg);
+
+static inline int
+xencomm_arch_hypercall_callback_op(int cmd, struct xencomm_handle *arg)
+{
+ return _hypercall2(int, callback_op, cmd, arg);
+}
+
+static inline long
+xencomm_arch_hypercall_vcpu_op(int cmd, int cpu, void *arg)
+{
+ return _hypercall3(long, vcpu_op, cmd, cpu, arg);
+}
+
+static inline int
+HYPERVISOR_physdev_op(int cmd, void *arg)
+{
+ switch (cmd) {
+ case PHYSDEVOP_eoi:
+ return _hypercall1(int, ia64_fast_eoi,
+ ((struct physdev_eoi *)arg)->irq);
+ default:
+ return xencomm_hypercall_physdev_op(cmd, arg);
+ }
+}
+
+static inline long
+xencomm_arch_hypercall_opt_feature(struct xencomm_handle *arg)
+{
+ return _hypercall1(long, opt_feature, arg);
+}
+
+/* for balloon driver */
+#define HYPERVISOR_update_va_mapping(va, new_val, flags) (0)
+
+/* Use xencomm to do hypercalls. */
+#define HYPERVISOR_sched_op xencomm_hypercall_sched_op
+#define HYPERVISOR_event_channel_op xencomm_hypercall_event_channel_op
+#define HYPERVISOR_callback_op xencomm_hypercall_callback_op
+#define HYPERVISOR_multicall xencomm_hypercall_multicall
+#define HYPERVISOR_xen_version xencomm_hypercall_xen_version
+#define HYPERVISOR_console_io xencomm_hypercall_console_io
+#define HYPERVISOR_memory_op xencomm_hypercall_memory_op
+#define HYPERVISOR_suspend xencomm_hypercall_suspend
+#define HYPERVISOR_vcpu_op xencomm_hypercall_vcpu_op
+#define HYPERVISOR_opt_feature xencomm_hypercall_opt_feature
+
+/* to compile gnttab_copy_grant_page() in drivers/xen/core/gnttab.c */
+#define HYPERVISOR_mmu_update(req, count, success_count, domid) ({ BUG(); 0; })
+
+static inline int
+HYPERVISOR_shutdown(
+ unsigned int reason)
+{
+ struct sched_shutdown sched_shutdown = {
+ .reason = reason
+ };
+
+ int rc = HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
+
+ return rc;
+}
+
+/* for netfront.c, netback.c */
+#define MULTI_UVMFLAGS_INDEX 0 /* XXX any value */
+
+static inline void
+MULTI_update_va_mapping(
+ struct multicall_entry *mcl, unsigned long va,
+ pte_t new_val, unsigned long flags)
+{
+ mcl->op = __HYPERVISOR_update_va_mapping;
+ mcl->result = 0;
+}
+
+static inline void
+MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
+ void *uop, unsigned int count)
+{
+ mcl->op = __HYPERVISOR_grant_table_op;
+ mcl->args[0] = cmd;
+ mcl->args[1] = (unsigned long)uop;
+ mcl->args[2] = count;
+}
+
+static inline void
+MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
+ int count, int *success_count, domid_t domid)
+{
+ mcl->op = __HYPERVISOR_mmu_update;
+ mcl->args[0] = (unsigned long)req;
+ mcl->args[1] = count;
+ mcl->args[2] = (unsigned long)success_count;
+ mcl->args[3] = domid;
+}
+
+#endif /* _ASM_IA64_XEN_HYPERCALL_H */
--- /dev/null
+/******************************************************************************
+ * hypervisor.h
+ *
+ * Linux-specific hypervisor handling.
+ *
+ * Copyright (c) 2002-2004, K A Fraser
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation; or, when distributed
+ * separately from the Linux kernel or incorporated into other
+ * software packages, subject to the following license:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this source file (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy, modify,
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#ifndef _ASM_IA64_XEN_HYPERVISOR_H
+#define _ASM_IA64_XEN_HYPERVISOR_H
+
+#ifdef CONFIG_XEN
+
+#include <linux/init.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/version.h> /* to compile feature.c */
+#include <xen/features.h> /* to comiple xen-netfront.c */
+#include <asm/xen/hypercall.h>
+
+/* xen_domain_type is set before executing any C code by early_xen_setup */
+enum xen_domain_type {
+ XEN_NATIVE,
+ XEN_PV_DOMAIN,
+ XEN_HVM_DOMAIN,
+};
+
+extern enum xen_domain_type xen_domain_type;
+
+#define xen_domain() (xen_domain_type != XEN_NATIVE)
+#define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
+#define xen_initial_domain() (xen_pv_domain() && \
+ (xen_start_info->flags & SIF_INITDOMAIN))
+#define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
+
+/* deprecated. remove this */
+#define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
+
+extern struct shared_info *HYPERVISOR_shared_info;
+extern struct start_info *xen_start_info;
+
+void __init xen_setup_vcpu_info_placement(void);
+void force_evtchn_callback(void);
+
+/* for drivers/xen/balloon/balloon.c */
+#ifdef CONFIG_XEN_SCRUB_PAGES
+#define scrub_pages(_p, _n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
+#else
+#define scrub_pages(_p, _n) ((void)0)
+#endif
+
+/* For setup_arch() in arch/ia64/kernel/setup.c */
+void xen_ia64_enable_opt_feature(void);
+
+#else /* CONFIG_XEN */
+
+#define xen_domain() (0)
+#define xen_pv_domain() (0)
+#define xen_initial_domain() (0)
+#define xen_hvm_domain() (0)
+#define is_running_on_xen() (0) /* deprecated. remove this */
+#endif
+
+#define is_initial_xendomain() (0) /* deprecated. remove this */
+
+#endif /* _ASM_IA64_XEN_HYPERVISOR_H */
--- /dev/null
+/******************************************************************************
+ * arch/ia64/include/asm/xen/inst.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <asm/xen/privop.h>
+
+#define ia64_ivt xen_ivt
+#define DO_SAVE_MIN XEN_DO_SAVE_MIN
+
+#define __paravirt_switch_to xen_switch_to
+#define __paravirt_leave_syscall xen_leave_syscall
+#define __paravirt_work_processed_syscall xen_work_processed_syscall
+#define __paravirt_leave_kernel xen_leave_kernel
+#define __paravirt_pending_syscall_end xen_work_pending_syscall_end
+#define __paravirt_work_processed_syscall_target \
+ xen_work_processed_syscall
+
+#define MOV_FROM_IFA(reg) \
+ movl reg = XSI_IFA; \
+ ;; \
+ ld8 reg = [reg]
+
+#define MOV_FROM_ITIR(reg) \
+ movl reg = XSI_ITIR; \
+ ;; \
+ ld8 reg = [reg]
+
+#define MOV_FROM_ISR(reg) \
+ movl reg = XSI_ISR; \
+ ;; \
+ ld8 reg = [reg]
+
+#define MOV_FROM_IHA(reg) \
+ movl reg = XSI_IHA; \
+ ;; \
+ ld8 reg = [reg]
+
+#define MOV_FROM_IPSR(pred, reg) \
+(pred) movl reg = XSI_IPSR; \
+ ;; \
+(pred) ld8 reg = [reg]
+
+#define MOV_FROM_IIM(reg) \
+ movl reg = XSI_IIM; \
+ ;; \
+ ld8 reg = [reg]
+
+#define MOV_FROM_IIP(reg) \
+ movl reg = XSI_IIP; \
+ ;; \
+ ld8 reg = [reg]
+
+.macro __MOV_FROM_IVR reg, clob
+ .ifc "\reg", "r8"
+ XEN_HYPER_GET_IVR
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ XEN_HYPER_GET_IVR
+ ;;
+ mov \reg = r8
+ .exitm
+ .endif
+
+ mov \clob = r8
+ ;;
+ XEN_HYPER_GET_IVR
+ ;;
+ mov \reg = r8
+ ;;
+ mov r8 = \clob
+.endm
+#define MOV_FROM_IVR(reg, clob) __MOV_FROM_IVR reg, clob
+
+.macro __MOV_FROM_PSR pred, reg, clob
+ .ifc "\reg", "r8"
+ (\pred) XEN_HYPER_GET_PSR;
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ (\pred) XEN_HYPER_GET_PSR
+ ;;
+ (\pred) mov \reg = r8
+ .exitm
+ .endif
+
+ (\pred) mov \clob = r8
+ (\pred) XEN_HYPER_GET_PSR
+ ;;
+ (\pred) mov \reg = r8
+ (\pred) mov r8 = \clob
+.endm
+#define MOV_FROM_PSR(pred, reg, clob) __MOV_FROM_PSR pred, reg, clob
+
+
+#define MOV_TO_IFA(reg, clob) \
+ movl clob = XSI_IFA; \
+ ;; \
+ st8 [clob] = reg \
+
+#define MOV_TO_ITIR(pred, reg, clob) \
+(pred) movl clob = XSI_ITIR; \
+ ;; \
+(pred) st8 [clob] = reg
+
+#define MOV_TO_IHA(pred, reg, clob) \
+(pred) movl clob = XSI_IHA; \
+ ;; \
+(pred) st8 [clob] = reg
+
+#define MOV_TO_IPSR(pred, reg, clob) \
+(pred) movl clob = XSI_IPSR; \
+ ;; \
+(pred) st8 [clob] = reg; \
+ ;;
+
+#define MOV_TO_IFS(pred, reg, clob) \
+(pred) movl clob = XSI_IFS; \
+ ;; \
+(pred) st8 [clob] = reg; \
+ ;;
+
+#define MOV_TO_IIP(reg, clob) \
+ movl clob = XSI_IIP; \
+ ;; \
+ st8 [clob] = reg
+
+.macro ____MOV_TO_KR kr, reg, clob0, clob1
+ .ifc "\clob0", "r9"
+ .error "clob0 \clob0 must not be r9"
+ .endif
+ .ifc "\clob1", "r8"
+ .error "clob1 \clob1 must not be r8"
+ .endif
+
+ .ifnc "\reg", "r9"
+ .ifnc "\clob1", "r9"
+ mov \clob1 = r9
+ .endif
+ mov r9 = \reg
+ .endif
+ .ifnc "\clob0", "r8"
+ mov \clob0 = r8
+ .endif
+ mov r8 = \kr
+ ;;
+ XEN_HYPER_SET_KR
+
+ .ifnc "\reg", "r9"
+ .ifnc "\clob1", "r9"
+ mov r9 = \clob1
+ .endif
+ .endif
+ .ifnc "\clob0", "r8"
+ mov r8 = \clob0
+ .endif
+.endm
+
+.macro __MOV_TO_KR kr, reg, clob0, clob1
+ .ifc "\clob0", "r9"
+ ____MOV_TO_KR \kr, \reg, \clob1, \clob0
+ .exitm
+ .endif
+ .ifc "\clob1", "r8"
+ ____MOV_TO_KR \kr, \reg, \clob1, \clob0
+ .exitm
+ .endif
+
+ ____MOV_TO_KR \kr, \reg, \clob0, \clob1
+.endm
+
+#define MOV_TO_KR(kr, reg, clob0, clob1) \
+ __MOV_TO_KR IA64_KR_ ## kr, reg, clob0, clob1
+
+
+.macro __ITC_I pred, reg, clob
+ .ifc "\reg", "r8"
+ (\pred) XEN_HYPER_ITC_I
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ (\pred) mov r8 = \reg
+ ;;
+ (\pred) XEN_HYPER_ITC_I
+ .exitm
+ .endif
+
+ (\pred) mov \clob = r8
+ (\pred) mov r8 = \reg
+ ;;
+ (\pred) XEN_HYPER_ITC_I
+ ;;
+ (\pred) mov r8 = \clob
+ ;;
+.endm
+#define ITC_I(pred, reg, clob) __ITC_I pred, reg, clob
+
+.macro __ITC_D pred, reg, clob
+ .ifc "\reg", "r8"
+ (\pred) XEN_HYPER_ITC_D
+ ;;
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ (\pred) mov r8 = \reg
+ ;;
+ (\pred) XEN_HYPER_ITC_D
+ ;;
+ .exitm
+ .endif
+
+ (\pred) mov \clob = r8
+ (\pred) mov r8 = \reg
+ ;;
+ (\pred) XEN_HYPER_ITC_D
+ ;;
+ (\pred) mov r8 = \clob
+ ;;
+.endm
+#define ITC_D(pred, reg, clob) __ITC_D pred, reg, clob
+
+.macro __ITC_I_AND_D pred_i, pred_d, reg, clob
+ .ifc "\reg", "r8"
+ (\pred_i)XEN_HYPER_ITC_I
+ ;;
+ (\pred_d)XEN_HYPER_ITC_D
+ ;;
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ mov r8 = \reg
+ ;;
+ (\pred_i)XEN_HYPER_ITC_I
+ ;;
+ (\pred_d)XEN_HYPER_ITC_D
+ ;;
+ .exitm
+ .endif
+
+ mov \clob = r8
+ mov r8 = \reg
+ ;;
+ (\pred_i)XEN_HYPER_ITC_I
+ ;;
+ (\pred_d)XEN_HYPER_ITC_D
+ ;;
+ mov r8 = \clob
+ ;;
+.endm
+#define ITC_I_AND_D(pred_i, pred_d, reg, clob) \
+ __ITC_I_AND_D pred_i, pred_d, reg, clob
+
+.macro __THASH pred, reg0, reg1, clob
+ .ifc "\reg0", "r8"
+ (\pred) mov r8 = \reg1
+ (\pred) XEN_HYPER_THASH
+ .exitm
+ .endc
+ .ifc "\reg1", "r8"
+ (\pred) XEN_HYPER_THASH
+ ;;
+ (\pred) mov \reg0 = r8
+ ;;
+ .exitm
+ .endif
+ .ifc "\clob", "r8"
+ (\pred) mov r8 = \reg1
+ (\pred) XEN_HYPER_THASH
+ ;;
+ (\pred) mov \reg0 = r8
+ ;;
+ .exitm
+ .endif
+
+ (\pred) mov \clob = r8
+ (\pred) mov r8 = \reg1
+ (\pred) XEN_HYPER_THASH
+ ;;
+ (\pred) mov \reg0 = r8
+ (\pred) mov r8 = \clob
+ ;;
+.endm
+#define THASH(pred, reg0, reg1, clob) __THASH pred, reg0, reg1, clob
+
+#define SSM_PSR_IC_AND_DEFAULT_BITS_AND_SRLZ_I(clob0, clob1) \
+ mov clob0 = 1; \
+ movl clob1 = XSI_PSR_IC; \
+ ;; \
+ st4 [clob1] = clob0 \
+ ;;
+
+#define SSM_PSR_IC_AND_SRLZ_D(clob0, clob1) \
+ ;; \
+ srlz.d; \
+ mov clob1 = 1; \
+ movl clob0 = XSI_PSR_IC; \
+ ;; \
+ st4 [clob0] = clob1
+
+#define RSM_PSR_IC(clob) \
+ movl clob = XSI_PSR_IC; \
+ ;; \
+ st4 [clob] = r0; \
+ ;;
+
+/* pred will be clobbered */
+#define MASK_TO_PEND_OFS (-1)
+#define SSM_PSR_I(pred, pred_clob, clob) \
+(pred) movl clob = XSI_PSR_I_ADDR \
+ ;; \
+(pred) ld8 clob = [clob] \
+ ;; \
+ /* if (pred) vpsr.i = 1 */ \
+ /* if (pred) (vcpu->vcpu_info->evtchn_upcall_mask)=0 */ \
+(pred) st1 [clob] = r0, MASK_TO_PEND_OFS \
+ ;; \
+ /* if (vcpu->vcpu_info->evtchn_upcall_pending) */ \
+(pred) ld1 clob = [clob] \
+ ;; \
+(pred) cmp.ne.unc pred_clob, p0 = clob, r0 \
+ ;; \
+(pred_clob)XEN_HYPER_SSM_I /* do areal ssm psr.i */
+
+#define RSM_PSR_I(pred, clob0, clob1) \
+ movl clob0 = XSI_PSR_I_ADDR; \
+ mov clob1 = 1; \
+ ;; \
+ ld8 clob0 = [clob0]; \
+ ;; \
+(pred) st1 [clob0] = clob1
+
+#define RSM_PSR_I_IC(clob0, clob1, clob2) \
+ movl clob0 = XSI_PSR_I_ADDR; \
+ movl clob1 = XSI_PSR_IC; \
+ ;; \
+ ld8 clob0 = [clob0]; \
+ mov clob2 = 1; \
+ ;; \
+ /* note: clears both vpsr.i and vpsr.ic! */ \
+ st1 [clob0] = clob2; \
+ st4 [clob1] = r0; \
+ ;;
+
+#define RSM_PSR_DT \
+ XEN_HYPER_RSM_PSR_DT
+
+#define SSM_PSR_DT_AND_SRLZ_I \
+ XEN_HYPER_SSM_PSR_DT
+
+#define BSW_0(clob0, clob1, clob2) \
+ ;; \
+ /* r16-r31 all now hold bank1 values */ \
+ mov clob2 = ar.unat; \
+ movl clob0 = XSI_BANK1_R16; \
+ movl clob1 = XSI_BANK1_R16 + 8; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r16, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r17, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r18, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r19, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r20, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r21, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r22, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r23, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r24, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r25, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r26, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r27, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r28, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r29, 16; \
+ ;; \
+.mem.offset 0, 0; st8.spill [clob0] = r30, 16; \
+.mem.offset 8, 0; st8.spill [clob1] = r31, 16; \
+ ;; \
+ mov clob1 = ar.unat; \
+ movl clob0 = XSI_B1NAT; \
+ ;; \
+ st8 [clob0] = clob1; \
+ mov ar.unat = clob2; \
+ movl clob0 = XSI_BANKNUM; \
+ ;; \
+ st4 [clob0] = r0
+
+
+ /* FIXME: THIS CODE IS NOT NaT SAFE! */
+#define XEN_BSW_1(clob) \
+ mov clob = ar.unat; \
+ movl r30 = XSI_B1NAT; \
+ ;; \
+ ld8 r30 = [r30]; \
+ mov r31 = 1; \
+ ;; \
+ mov ar.unat = r30; \
+ movl r30 = XSI_BANKNUM; \
+ ;; \
+ st4 [r30] = r31; \
+ movl r30 = XSI_BANK1_R16; \
+ movl r31 = XSI_BANK1_R16+8; \
+ ;; \
+ ld8.fill r16 = [r30], 16; \
+ ld8.fill r17 = [r31], 16; \
+ ;; \
+ ld8.fill r18 = [r30], 16; \
+ ld8.fill r19 = [r31], 16; \
+ ;; \
+ ld8.fill r20 = [r30], 16; \
+ ld8.fill r21 = [r31], 16; \
+ ;; \
+ ld8.fill r22 = [r30], 16; \
+ ld8.fill r23 = [r31], 16; \
+ ;; \
+ ld8.fill r24 = [r30], 16; \
+ ld8.fill r25 = [r31], 16; \
+ ;; \
+ ld8.fill r26 = [r30], 16; \
+ ld8.fill r27 = [r31], 16; \
+ ;; \
+ ld8.fill r28 = [r30], 16; \
+ ld8.fill r29 = [r31], 16; \
+ ;; \
+ ld8.fill r30 = [r30]; \
+ ld8.fill r31 = [r31]; \
+ ;; \
+ mov ar.unat = clob
+
+#define BSW_1(clob0, clob1) XEN_BSW_1(clob1)
+
+
+#define COVER \
+ XEN_HYPER_COVER
+
+#define RFI \
+ XEN_HYPER_RFI; \
+ dv_serialize_data
--- /dev/null
+/******************************************************************************
+ * arch-ia64/hypervisor-if.h
+ *
+ * Guest OS interface to IA64 Xen.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Copyright by those who contributed. (in alphabetical order)
+ *
+ * Anthony Xu <anthony.xu@intel.com>
+ * Eddie Dong <eddie.dong@intel.com>
+ * Fred Yang <fred.yang@intel.com>
+ * Kevin Tian <kevin.tian@intel.com>
+ * Alex Williamson <alex.williamson@hp.com>
+ * Chris Wright <chrisw@sous-sol.org>
+ * Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
+ * Dietmar Hahn <dietmar.hahn@fujitsu-siemens.com>
+ * Hollis Blanchard <hollisb@us.ibm.com>
+ * Isaku Yamahata <yamahata@valinux.co.jp>
+ * Jan Beulich <jbeulich@novell.com>
+ * John Levon <john.levon@sun.com>
+ * Kazuhiro Suzuki <kaz@jp.fujitsu.com>
+ * Keir Fraser <keir.fraser@citrix.com>
+ * Kouya Shimura <kouya@jp.fujitsu.com>
+ * Masaki Kanno <kanno.masaki@jp.fujitsu.com>
+ * Matt Chapman <matthewc@hp.com>
+ * Matthew Chapman <matthewc@hp.com>
+ * Samuel Thibault <samuel.thibault@eu.citrix.com>
+ * Tomonari Horikoshi <t.horikoshi@jp.fujitsu.com>
+ * Tristan Gingold <tgingold@free.fr>
+ * Tsunehisa Doi <Doi.Tsunehisa@jp.fujitsu.com>
+ * Yutaka Ezaki <yutaka.ezaki@jp.fujitsu.com>
+ * Zhang Xin <xing.z.zhang@intel.com>
+ * Zhang xiantao <xiantao.zhang@intel.com>
+ * dan.magenheimer@hp.com
+ * ian.pratt@cl.cam.ac.uk
+ * michael.fetterman@cl.cam.ac.uk
+ */
+
+#ifndef _ASM_IA64_XEN_INTERFACE_H
+#define _ASM_IA64_XEN_INTERFACE_H
+
+#define __DEFINE_GUEST_HANDLE(name, type) \
+ typedef struct { type *p; } __guest_handle_ ## name
+
+#define DEFINE_GUEST_HANDLE_STRUCT(name) \
+ __DEFINE_GUEST_HANDLE(name, struct name)
+#define DEFINE_GUEST_HANDLE(name) __DEFINE_GUEST_HANDLE(name, name)
+#define GUEST_HANDLE(name) __guest_handle_ ## name
+#define GUEST_HANDLE_64(name) GUEST_HANDLE(name)
+#define set_xen_guest_handle(hnd, val) do { (hnd).p = val; } while (0)
+
+#ifndef __ASSEMBLY__
+/* Guest handles for primitive C types. */
+__DEFINE_GUEST_HANDLE(uchar, unsigned char);
+__DEFINE_GUEST_HANDLE(uint, unsigned int);
+__DEFINE_GUEST_HANDLE(ulong, unsigned long);
+__DEFINE_GUEST_HANDLE(u64, unsigned long);
+DEFINE_GUEST_HANDLE(char);
+DEFINE_GUEST_HANDLE(int);
+DEFINE_GUEST_HANDLE(long);
+DEFINE_GUEST_HANDLE(void);
+
+typedef unsigned long xen_pfn_t;
+DEFINE_GUEST_HANDLE(xen_pfn_t);
+#define PRI_xen_pfn "lx"
+#endif
+
+/* Arch specific VIRQs definition */
+#define VIRQ_ITC VIRQ_ARCH_0 /* V. Virtual itc timer */
+#define VIRQ_MCA_CMC VIRQ_ARCH_1 /* MCA cmc interrupt */
+#define VIRQ_MCA_CPE VIRQ_ARCH_2 /* MCA cpe interrupt */
+
+/* Maximum number of virtual CPUs in multi-processor guests. */
+/* keep sizeof(struct shared_page) <= PAGE_SIZE.
+ * this is checked in arch/ia64/xen/hypervisor.c. */
+#define MAX_VIRT_CPUS 64
+
+#ifndef __ASSEMBLY__
+
+#define INVALID_MFN (~0UL)
+
+union vac {
+ unsigned long value;
+ struct {
+ int a_int:1;
+ int a_from_int_cr:1;
+ int a_to_int_cr:1;
+ int a_from_psr:1;
+ int a_from_cpuid:1;
+ int a_cover:1;
+ int a_bsw:1;
+ long reserved:57;
+ };
+};
+
+union vdc {
+ unsigned long value;
+ struct {
+ int d_vmsw:1;
+ int d_extint:1;
+ int d_ibr_dbr:1;
+ int d_pmc:1;
+ int d_to_pmd:1;
+ int d_itm:1;
+ long reserved:58;
+ };
+};
+
+struct mapped_regs {
+ union vac vac;
+ union vdc vdc;
+ unsigned long virt_env_vaddr;
+ unsigned long reserved1[29];
+ unsigned long vhpi;
+ unsigned long reserved2[95];
+ union {
+ unsigned long vgr[16];
+ unsigned long bank1_regs[16]; /* bank1 regs (r16-r31)
+ when bank0 active */
+ };
+ union {
+ unsigned long vbgr[16];
+ unsigned long bank0_regs[16]; /* bank0 regs (r16-r31)
+ when bank1 active */
+ };
+ unsigned long vnat;
+ unsigned long vbnat;
+ unsigned long vcpuid[5];
+ unsigned long reserved3[11];
+ unsigned long vpsr;
+ unsigned long vpr;
+ unsigned long reserved4[76];
+ union {
+ unsigned long vcr[128];
+ struct {
+ unsigned long dcr; /* CR0 */
+ unsigned long itm;
+ unsigned long iva;
+ unsigned long rsv1[5];
+ unsigned long pta; /* CR8 */
+ unsigned long rsv2[7];
+ unsigned long ipsr; /* CR16 */
+ unsigned long isr;
+ unsigned long rsv3;
+ unsigned long iip;
+ unsigned long ifa;
+ unsigned long itir;
+ unsigned long iipa;
+ unsigned long ifs;
+ unsigned long iim; /* CR24 */
+ unsigned long iha;
+ unsigned long rsv4[38];
+ unsigned long lid; /* CR64 */
+ unsigned long ivr;
+ unsigned long tpr;
+ unsigned long eoi;
+ unsigned long irr[4];
+ unsigned long itv; /* CR72 */
+ unsigned long pmv;
+ unsigned long cmcv;
+ unsigned long rsv5[5];
+ unsigned long lrr0; /* CR80 */
+ unsigned long lrr1;
+ unsigned long rsv6[46];
+ };
+ };
+ union {
+ unsigned long reserved5[128];
+ struct {
+ unsigned long precover_ifs;
+ unsigned long unat; /* not sure if this is needed
+ until NaT arch is done */
+ int interrupt_collection_enabled; /* virtual psr.ic */
+
+ /* virtual interrupt deliverable flag is
+ * evtchn_upcall_mask in shared info area now.
+ * interrupt_mask_addr is the address
+ * of evtchn_upcall_mask for current vcpu
+ */
+ unsigned char *interrupt_mask_addr;
+ int pending_interruption;
+ unsigned char vpsr_pp;
+ unsigned char vpsr_dfh;
+ unsigned char hpsr_dfh;
+ unsigned char hpsr_mfh;
+ unsigned long reserved5_1[4];
+ int metaphysical_mode; /* 1 = use metaphys mapping
+ 0 = use virtual */
+ int banknum; /* 0 or 1, which virtual
+ register bank is active */
+ unsigned long rrs[8]; /* region registers */
+ unsigned long krs[8]; /* kernel registers */
+ unsigned long tmp[16]; /* temp registers
+ (e.g. for hyperprivops) */
+ };
+ };
+};
+
+struct arch_vcpu_info {
+ /* nothing */
+};
+
+/*
+ * This structure is used for magic page in domain pseudo physical address
+ * space and the result of XENMEM_machine_memory_map.
+ * As the XENMEM_machine_memory_map result,
+ * xen_memory_map::nr_entries indicates the size in bytes
+ * including struct xen_ia64_memmap_info. Not the number of entries.
+ */
+struct xen_ia64_memmap_info {
+ uint64_t efi_memmap_size; /* size of EFI memory map */
+ uint64_t efi_memdesc_size; /* size of an EFI memory map
+ * descriptor */
+ uint32_t efi_memdesc_version; /* memory descriptor version */
+ void *memdesc[0]; /* array of efi_memory_desc_t */
+};
+
+struct arch_shared_info {
+ /* PFN of the start_info page. */
+ unsigned long start_info_pfn;
+
+ /* Interrupt vector for event channel. */
+ int evtchn_vector;
+
+ /* PFN of memmap_info page */
+ unsigned int memmap_info_num_pages; /* currently only = 1 case is
+ supported. */
+ unsigned long memmap_info_pfn;
+
+ uint64_t pad[31];
+};
+
+struct xen_callback {
+ unsigned long ip;
+};
+typedef struct xen_callback xen_callback_t;
+
+#endif /* !__ASSEMBLY__ */
+
+/* Size of the shared_info area (this is not related to page size). */
+#define XSI_SHIFT 14
+#define XSI_SIZE (1 << XSI_SHIFT)
+/* Log size of mapped_regs area (64 KB - only 4KB is used). */
+#define XMAPPEDREGS_SHIFT 12
+#define XMAPPEDREGS_SIZE (1 << XMAPPEDREGS_SHIFT)
+/* Offset of XASI (Xen arch shared info) wrt XSI_BASE. */
+#define XMAPPEDREGS_OFS XSI_SIZE
+
+/* Hyperprivops. */
+#define HYPERPRIVOP_START 0x1
+#define HYPERPRIVOP_RFI (HYPERPRIVOP_START + 0x0)
+#define HYPERPRIVOP_RSM_DT (HYPERPRIVOP_START + 0x1)
+#define HYPERPRIVOP_SSM_DT (HYPERPRIVOP_START + 0x2)
+#define HYPERPRIVOP_COVER (HYPERPRIVOP_START + 0x3)
+#define HYPERPRIVOP_ITC_D (HYPERPRIVOP_START + 0x4)
+#define HYPERPRIVOP_ITC_I (HYPERPRIVOP_START + 0x5)
+#define HYPERPRIVOP_SSM_I (HYPERPRIVOP_START + 0x6)
+#define HYPERPRIVOP_GET_IVR (HYPERPRIVOP_START + 0x7)
+#define HYPERPRIVOP_GET_TPR (HYPERPRIVOP_START + 0x8)
+#define HYPERPRIVOP_SET_TPR (HYPERPRIVOP_START + 0x9)
+#define HYPERPRIVOP_EOI (HYPERPRIVOP_START + 0xa)
+#define HYPERPRIVOP_SET_ITM (HYPERPRIVOP_START + 0xb)
+#define HYPERPRIVOP_THASH (HYPERPRIVOP_START + 0xc)
+#define HYPERPRIVOP_PTC_GA (HYPERPRIVOP_START + 0xd)
+#define HYPERPRIVOP_ITR_D (HYPERPRIVOP_START + 0xe)
+#define HYPERPRIVOP_GET_RR (HYPERPRIVOP_START + 0xf)
+#define HYPERPRIVOP_SET_RR (HYPERPRIVOP_START + 0x10)
+#define HYPERPRIVOP_SET_KR (HYPERPRIVOP_START + 0x11)
+#define HYPERPRIVOP_FC (HYPERPRIVOP_START + 0x12)
+#define HYPERPRIVOP_GET_CPUID (HYPERPRIVOP_START + 0x13)
+#define HYPERPRIVOP_GET_PMD (HYPERPRIVOP_START + 0x14)
+#define HYPERPRIVOP_GET_EFLAG (HYPERPRIVOP_START + 0x15)
+#define HYPERPRIVOP_SET_EFLAG (HYPERPRIVOP_START + 0x16)
+#define HYPERPRIVOP_RSM_BE (HYPERPRIVOP_START + 0x17)
+#define HYPERPRIVOP_GET_PSR (HYPERPRIVOP_START + 0x18)
+#define HYPERPRIVOP_SET_RR0_TO_RR4 (HYPERPRIVOP_START + 0x19)
+#define HYPERPRIVOP_MAX (0x1a)
+
+/* Fast and light hypercalls. */
+#define __HYPERVISOR_ia64_fast_eoi __HYPERVISOR_arch_1
+
+/* Xencomm macros. */
+#define XENCOMM_INLINE_MASK 0xf800000000000000UL
+#define XENCOMM_INLINE_FLAG 0x8000000000000000UL
+
+#ifndef __ASSEMBLY__
+
+/*
+ * Optimization features.
+ * The hypervisor may do some special optimizations for guests. This hypercall
+ * can be used to switch on/of these special optimizations.
+ */
+#define __HYPERVISOR_opt_feature 0x700UL
+
+#define XEN_IA64_OPTF_OFF 0x0
+#define XEN_IA64_OPTF_ON 0x1
+
+/*
+ * If this feature is switched on, the hypervisor inserts the
+ * tlb entries without calling the guests traphandler.
+ * This is useful in guests using region 7 for identity mapping
+ * like the linux kernel does.
+ */
+#define XEN_IA64_OPTF_IDENT_MAP_REG7 1
+
+/* Identity mapping of region 4 addresses in HVM. */
+#define XEN_IA64_OPTF_IDENT_MAP_REG4 2
+
+/* Identity mapping of region 5 addresses in HVM. */
+#define XEN_IA64_OPTF_IDENT_MAP_REG5 3
+
+#define XEN_IA64_OPTF_IDENT_MAP_NOT_SET (0)
+
+struct xen_ia64_opt_feature {
+ unsigned long cmd; /* Which feature */
+ unsigned char on; /* Switch feature on/off */
+ union {
+ struct {
+ /* The page protection bit mask of the pte.
+ * This will be or'ed with the pte. */
+ unsigned long pgprot;
+ unsigned long key; /* A protection key for itir.*/
+ };
+ };
+};
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_IA64_XEN_INTERFACE_H */
--- /dev/null
+/******************************************************************************
+ * arch/ia64/include/asm/xen/irq.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_IRQ_H
+#define _ASM_IA64_XEN_IRQ_H
+
+/*
+ * The flat IRQ space is divided into two regions:
+ * 1. A one-to-one mapping of real physical IRQs. This space is only used
+ * if we have physical device-access privilege. This region is at the
+ * start of the IRQ space so that existing device drivers do not need
+ * to be modified to translate physical IRQ numbers into our IRQ space.
+ * 3. A dynamic mapping of inter-domain and Xen-sourced virtual IRQs. These
+ * are bound using the provided bind/unbind functions.
+ */
+
+#define XEN_PIRQ_BASE 0
+#define XEN_NR_PIRQS 256
+
+#define XEN_DYNIRQ_BASE (XEN_PIRQ_BASE + XEN_NR_PIRQS)
+#define XEN_NR_DYNIRQS (NR_CPUS * 8)
+
+#define XEN_NR_IRQS (XEN_NR_PIRQS + XEN_NR_DYNIRQS)
+
+#endif /* _ASM_IA64_XEN_IRQ_H */
--- /dev/null
+/*
+ * DO_SAVE_MIN switches to the kernel stacks (if necessary) and saves
+ * the minimum state necessary that allows us to turn psr.ic back
+ * on.
+ *
+ * Assumed state upon entry:
+ * psr.ic: off
+ * r31: contains saved predicates (pr)
+ *
+ * Upon exit, the state is as follows:
+ * psr.ic: off
+ * r2 = points to &pt_regs.r16
+ * r8 = contents of ar.ccv
+ * r9 = contents of ar.csd
+ * r10 = contents of ar.ssd
+ * r11 = FPSR_DEFAULT
+ * r12 = kernel sp (kernel virtual address)
+ * r13 = points to current task_struct (kernel virtual address)
+ * p15 = TRUE if psr.i is set in cr.ipsr
+ * predicate registers (other than p2, p3, and p15), b6, r3, r14, r15:
+ * preserved
+ * CONFIG_XEN note: p6/p7 are not preserved
+ *
+ * Note that psr.ic is NOT turned on by this macro. This is so that
+ * we can pass interruption state as arguments to a handler.
+ */
+#define XEN_DO_SAVE_MIN(__COVER,SAVE_IFS,EXTRA,WORKAROUND) \
+ mov r16=IA64_KR(CURRENT); /* M */ \
+ mov r27=ar.rsc; /* M */ \
+ mov r20=r1; /* A */ \
+ mov r25=ar.unat; /* M */ \
+ MOV_FROM_IPSR(p0,r29); /* M */ \
+ MOV_FROM_IIP(r28); /* M */ \
+ mov r21=ar.fpsr; /* M */ \
+ mov r26=ar.pfs; /* I */ \
+ __COVER; /* B;; (or nothing) */ \
+ adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16; \
+ ;; \
+ ld1 r17=[r16]; /* load current->thread.on_ustack flag */ \
+ st1 [r16]=r0; /* clear current->thread.on_ustack flag */ \
+ adds r1=-IA64_TASK_THREAD_ON_USTACK_OFFSET,r16 \
+ /* switch from user to kernel RBS: */ \
+ ;; \
+ invala; /* M */ \
+ /* SAVE_IFS;*/ /* see xen special handling below */ \
+ cmp.eq pKStk,pUStk=r0,r17; /* are we in kernel mode already? */ \
+ ;; \
+(pUStk) mov ar.rsc=0; /* set enforced lazy mode, pl 0, little-endian, loadrs=0 */ \
+ ;; \
+(pUStk) mov.m r24=ar.rnat; \
+(pUStk) addl r22=IA64_RBS_OFFSET,r1; /* compute base of RBS */ \
+(pKStk) mov r1=sp; /* get sp */ \
+ ;; \
+(pUStk) lfetch.fault.excl.nt1 [r22]; \
+(pUStk) addl r1=IA64_STK_OFFSET-IA64_PT_REGS_SIZE,r1; /* compute base of memory stack */ \
+(pUStk) mov r23=ar.bspstore; /* save ar.bspstore */ \
+ ;; \
+(pUStk) mov ar.bspstore=r22; /* switch to kernel RBS */ \
+(pKStk) addl r1=-IA64_PT_REGS_SIZE,r1; /* if in kernel mode, use sp (r12) */ \
+ ;; \
+(pUStk) mov r18=ar.bsp; \
+(pUStk) mov ar.rsc=0x3; /* set eager mode, pl 0, little-endian, loadrs=0 */ \
+ adds r17=2*L1_CACHE_BYTES,r1; /* really: biggest cache-line size */ \
+ adds r16=PT(CR_IPSR),r1; \
+ ;; \
+ lfetch.fault.excl.nt1 [r17],L1_CACHE_BYTES; \
+ st8 [r16]=r29; /* save cr.ipsr */ \
+ ;; \
+ lfetch.fault.excl.nt1 [r17]; \
+ tbit.nz p15,p0=r29,IA64_PSR_I_BIT; \
+ mov r29=b0 \
+ ;; \
+ WORKAROUND; \
+ adds r16=PT(R8),r1; /* initialize first base pointer */ \
+ adds r17=PT(R9),r1; /* initialize second base pointer */ \
+(pKStk) mov r18=r0; /* make sure r18 isn't NaT */ \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r8,16; \
+.mem.offset 8,0; st8.spill [r17]=r9,16; \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r10,24; \
+ movl r8=XSI_PRECOVER_IFS; \
+.mem.offset 8,0; st8.spill [r17]=r11,24; \
+ ;; \
+ /* xen special handling for possibly lazy cover */ \
+ /* SAVE_MIN case in dispatch_ia32_handler: mov r30=r0 */ \
+ ld8 r30=[r8]; \
+(pUStk) sub r18=r18,r22; /* r18=RSE.ndirty*8 */ \
+ st8 [r16]=r28,16; /* save cr.iip */ \
+ ;; \
+ st8 [r17]=r30,16; /* save cr.ifs */ \
+ mov r8=ar.ccv; \
+ mov r9=ar.csd; \
+ mov r10=ar.ssd; \
+ movl r11=FPSR_DEFAULT; /* L-unit */ \
+ ;; \
+ st8 [r16]=r25,16; /* save ar.unat */ \
+ st8 [r17]=r26,16; /* save ar.pfs */ \
+ shl r18=r18,16; /* compute ar.rsc to be used for "loadrs" */ \
+ ;; \
+ st8 [r16]=r27,16; /* save ar.rsc */ \
+(pUStk) st8 [r17]=r24,16; /* save ar.rnat */ \
+(pKStk) adds r17=16,r17; /* skip over ar_rnat field */ \
+ ;; /* avoid RAW on r16 & r17 */ \
+(pUStk) st8 [r16]=r23,16; /* save ar.bspstore */ \
+ st8 [r17]=r31,16; /* save predicates */ \
+(pKStk) adds r16=16,r16; /* skip over ar_bspstore field */ \
+ ;; \
+ st8 [r16]=r29,16; /* save b0 */ \
+ st8 [r17]=r18,16; /* save ar.rsc value for "loadrs" */ \
+ cmp.eq pNonSys,pSys=r0,r0 /* initialize pSys=0, pNonSys=1 */ \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r20,16; /* save original r1 */ \
+.mem.offset 8,0; st8.spill [r17]=r12,16; \
+ adds r12=-16,r1; /* switch to kernel memory stack (with 16 bytes of scratch) */ \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r13,16; \
+.mem.offset 8,0; st8.spill [r17]=r21,16; /* save ar.fpsr */ \
+ mov r13=IA64_KR(CURRENT); /* establish `current' */ \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r15,16; \
+.mem.offset 8,0; st8.spill [r17]=r14,16; \
+ ;; \
+.mem.offset 0,0; st8.spill [r16]=r2,16; \
+.mem.offset 8,0; st8.spill [r17]=r3,16; \
+ ACCOUNT_GET_STAMP \
+ adds r2=IA64_PT_REGS_R16_OFFSET,r1; \
+ ;; \
+ EXTRA; \
+ movl r1=__gp; /* establish kernel global pointer */ \
+ ;; \
+ ACCOUNT_SYS_ENTER \
+ BSW_1(r3,r14); /* switch back to bank 1 (must be last in insn group) */ \
+ ;;
--- /dev/null
+/******************************************************************************
+ * arch/ia64/include/asm/xen/page.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef _ASM_IA64_XEN_PAGE_H
+#define _ASM_IA64_XEN_PAGE_H
+
+#define INVALID_P2M_ENTRY (~0UL)
+
+static inline unsigned long mfn_to_pfn(unsigned long mfn)
+{
+ return mfn;
+}
+
+static inline unsigned long pfn_to_mfn(unsigned long pfn)
+{
+ return pfn;
+}
+
+#define phys_to_machine_mapping_valid(_x) (1)
+
+static inline void *mfn_to_virt(unsigned long mfn)
+{
+ return __va(mfn << PAGE_SHIFT);
+}
+
+static inline unsigned long virt_to_mfn(void *virt)
+{
+ return __pa(virt) >> PAGE_SHIFT;
+}
+
+/* for tpmfront.c */
+static inline unsigned long virt_to_machine(void *virt)
+{
+ return __pa(virt);
+}
+
+static inline void set_phys_to_machine(unsigned long pfn, unsigned long mfn)
+{
+ /* nothing */
+}
+
+#define pte_mfn(_x) pte_pfn(_x)
+#define mfn_pte(_x, _y) __pte_ma(0) /* unmodified use */
+#define __pte_ma(_x) ((pte_t) {(_x)}) /* unmodified use */
+
+#endif /* _ASM_IA64_XEN_PAGE_H */
--- /dev/null
+#ifndef _ASM_IA64_XEN_PRIVOP_H
+#define _ASM_IA64_XEN_PRIVOP_H
+
+/*
+ * Copyright (C) 2005 Hewlett-Packard Co
+ * Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Paravirtualizations of privileged operations for Xen/ia64
+ *
+ *
+ * inline privop and paravirt_alt support
+ * Copyright (c) 2007 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ */
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h> /* arch-ia64.h requires uint64_t */
+#endif
+#include <asm/xen/interface.h>
+
+/* At 1 MB, before per-cpu space but still addressable using addl instead
+ of movl. */
+#define XSI_BASE 0xfffffffffff00000
+
+/* Address of mapped regs. */
+#define XMAPPEDREGS_BASE (XSI_BASE + XSI_SIZE)
+
+#ifdef __ASSEMBLY__
+#define XEN_HYPER_RFI break HYPERPRIVOP_RFI
+#define XEN_HYPER_RSM_PSR_DT break HYPERPRIVOP_RSM_DT
+#define XEN_HYPER_SSM_PSR_DT break HYPERPRIVOP_SSM_DT
+#define XEN_HYPER_COVER break HYPERPRIVOP_COVER
+#define XEN_HYPER_ITC_D break HYPERPRIVOP_ITC_D
+#define XEN_HYPER_ITC_I break HYPERPRIVOP_ITC_I
+#define XEN_HYPER_SSM_I break HYPERPRIVOP_SSM_I
+#define XEN_HYPER_GET_IVR break HYPERPRIVOP_GET_IVR
+#define XEN_HYPER_THASH break HYPERPRIVOP_THASH
+#define XEN_HYPER_ITR_D break HYPERPRIVOP_ITR_D
+#define XEN_HYPER_SET_KR break HYPERPRIVOP_SET_KR
+#define XEN_HYPER_GET_PSR break HYPERPRIVOP_GET_PSR
+#define XEN_HYPER_SET_RR0_TO_RR4 break HYPERPRIVOP_SET_RR0_TO_RR4
+
+#define XSI_IFS (XSI_BASE + XSI_IFS_OFS)
+#define XSI_PRECOVER_IFS (XSI_BASE + XSI_PRECOVER_IFS_OFS)
+#define XSI_IFA (XSI_BASE + XSI_IFA_OFS)
+#define XSI_ISR (XSI_BASE + XSI_ISR_OFS)
+#define XSI_IIM (XSI_BASE + XSI_IIM_OFS)
+#define XSI_ITIR (XSI_BASE + XSI_ITIR_OFS)
+#define XSI_PSR_I_ADDR (XSI_BASE + XSI_PSR_I_ADDR_OFS)
+#define XSI_PSR_IC (XSI_BASE + XSI_PSR_IC_OFS)
+#define XSI_IPSR (XSI_BASE + XSI_IPSR_OFS)
+#define XSI_IIP (XSI_BASE + XSI_IIP_OFS)
+#define XSI_B1NAT (XSI_BASE + XSI_B1NATS_OFS)
+#define XSI_BANK1_R16 (XSI_BASE + XSI_BANK1_R16_OFS)
+#define XSI_BANKNUM (XSI_BASE + XSI_BANKNUM_OFS)
+#define XSI_IHA (XSI_BASE + XSI_IHA_OFS)
+#endif
+
+#ifndef __ASSEMBLY__
+
+/************************************************/
+/* Instructions paravirtualized for correctness */
+/************************************************/
+
+/* "fc" and "thash" are privilege-sensitive instructions, meaning they
+ * may have different semantics depending on whether they are executed
+ * at PL0 vs PL!=0. When paravirtualized, these instructions mustn't
+ * be allowed to execute directly, lest incorrect semantics result. */
+extern void xen_fc(unsigned long addr);
+extern unsigned long xen_thash(unsigned long addr);
+
+/* Note that "ttag" and "cover" are also privilege-sensitive; "ttag"
+ * is not currently used (though it may be in a long-format VHPT system!)
+ * and the semantics of cover only change if psr.ic is off which is very
+ * rare (and currently non-existent outside of assembly code */
+
+/* There are also privilege-sensitive registers. These registers are
+ * readable at any privilege level but only writable at PL0. */
+extern unsigned long xen_get_cpuid(int index);
+extern unsigned long xen_get_pmd(int index);
+
+extern unsigned long xen_get_eflag(void); /* see xen_ia64_getreg */
+extern void xen_set_eflag(unsigned long); /* see xen_ia64_setreg */
+
+/************************************************/
+/* Instructions paravirtualized for performance */
+/************************************************/
+
+/* Xen uses memory-mapped virtual privileged registers for access to many
+ * performance-sensitive privileged registers. Some, like the processor
+ * status register (psr), are broken up into multiple memory locations.
+ * Others, like "pend", are abstractions based on privileged registers.
+ * "Pend" is guaranteed to be set if reading cr.ivr would return a
+ * (non-spurious) interrupt. */
+#define XEN_MAPPEDREGS ((struct mapped_regs *)XMAPPEDREGS_BASE)
+
+#define XSI_PSR_I \
+ (*XEN_MAPPEDREGS->interrupt_mask_addr)
+#define xen_get_virtual_psr_i() \
+ (!XSI_PSR_I)
+#define xen_set_virtual_psr_i(_val) \
+ ({ XSI_PSR_I = (uint8_t)(_val) ? 0 : 1; })
+#define xen_set_virtual_psr_ic(_val) \
+ ({ XEN_MAPPEDREGS->interrupt_collection_enabled = _val ? 1 : 0; })
+#define xen_get_virtual_pend() \
+ (*(((uint8_t *)XEN_MAPPEDREGS->interrupt_mask_addr) - 1))
+
+/* Although all privileged operations can be left to trap and will
+ * be properly handled by Xen, some are frequent enough that we use
+ * hyperprivops for performance. */
+extern unsigned long xen_get_psr(void);
+extern unsigned long xen_get_ivr(void);
+extern unsigned long xen_get_tpr(void);
+extern void xen_hyper_ssm_i(void);
+extern void xen_set_itm(unsigned long);
+extern void xen_set_tpr(unsigned long);
+extern void xen_eoi(unsigned long);
+extern unsigned long xen_get_rr(unsigned long index);
+extern void xen_set_rr(unsigned long index, unsigned long val);
+extern void xen_set_rr0_to_rr4(unsigned long val0, unsigned long val1,
+ unsigned long val2, unsigned long val3,
+ unsigned long val4);
+extern void xen_set_kr(unsigned long index, unsigned long val);
+extern void xen_ptcga(unsigned long addr, unsigned long size);
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* _ASM_IA64_XEN_PRIVOP_H */
--- /dev/null
+/*
+ * Copyright (C) 2006 Tristan Gingold <tristan.gingold@bull.net>, Bull SAS
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _ASM_IA64_XEN_XCOM_HCALL_H
+#define _ASM_IA64_XEN_XCOM_HCALL_H
+
+/* These function creates inline or mini descriptor for the parameters and
+ calls the corresponding xencomm_arch_hypercall_X.
+ Architectures should defines HYPERVISOR_xxx as xencomm_hypercall_xxx unless
+ they want to use their own wrapper. */
+extern int xencomm_hypercall_console_io(int cmd, int count, char *str);
+
+extern int xencomm_hypercall_event_channel_op(int cmd, void *op);
+
+extern int xencomm_hypercall_xen_version(int cmd, void *arg);
+
+extern int xencomm_hypercall_physdev_op(int cmd, void *op);
+
+extern int xencomm_hypercall_grant_table_op(unsigned int cmd, void *op,
+ unsigned int count);
+
+extern int xencomm_hypercall_sched_op(int cmd, void *arg);
+
+extern int xencomm_hypercall_multicall(void *call_list, int nr_calls);
+
+extern int xencomm_hypercall_callback_op(int cmd, void *arg);
+
+extern int xencomm_hypercall_memory_op(unsigned int cmd, void *arg);
+
+extern int xencomm_hypercall_suspend(unsigned long srec);
+
+extern long xencomm_hypercall_vcpu_op(int cmd, int cpu, void *arg);
+
+extern long xencomm_hypercall_opt_feature(void *arg);
+
+#endif /* _ASM_IA64_XEN_XCOM_HCALL_H */
--- /dev/null
+/*
+ * Copyright (C) 2006 Hollis Blanchard <hollisb@us.ibm.com>, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _ASM_IA64_XEN_XENCOMM_H
+#define _ASM_IA64_XEN_XENCOMM_H
+
+#include <xen/xencomm.h>
+#include <asm/pgtable.h>
+
+/* Must be called before any hypercall. */
+extern void xencomm_initialize(void);
+extern int xencomm_is_initialized(void);
+
+/* Check if virtual contiguity means physical contiguity
+ * where the passed address is a pointer value in virtual address.
+ * On ia64, identity mapping area in region 7 or the piece of region 5
+ * that is mapped by itr[IA64_TR_KERNEL]/dtr[IA64_TR_KERNEL]
+ */
+static inline int xencomm_is_phys_contiguous(unsigned long addr)
+{
+ return (PAGE_OFFSET <= addr &&
+ addr < (PAGE_OFFSET + (1UL << IA64_MAX_PHYS_BITS))) ||
+ (KERNEL_START <= addr &&
+ addr < KERNEL_START + KERNEL_TR_PAGE_SIZE);
+}
+
+#endif /* _ASM_IA64_XEN_XENCOMM_H */
ifneq ($(CONFIG_IA64_ESI),)
obj-y += esi_stub.o # must be in kernel proper
endif
+obj-$(CONFIG_DMAR) += pci-dma.o
+ifeq ($(CONFIG_DMAR), y)
+obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
+endif
# The gate DSO image is built using a special linker script.
targets += gate.so gate-syms.o
ASM_PARAVIRT_OBJS = ivt.o entry.o
define paravirtualized_native
AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_NATIVE
+AFLAGS_pvchk-sed-$(1) += -D__IA64_ASM_PARAVIRTUALIZED_PVCHECK
+extra-y += pvchk-$(1)
endef
$(foreach obj,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_native,$(obj))))
+
+#
+# Checker for paravirtualizations of privileged operations.
+#
+quiet_cmd_pv_check_sed = PVCHK $@
+define cmd_pv_check_sed
+ sed -f $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed $< > $@
+endef
+
+$(obj)/pvchk-sed-%.s: $(src)/%.S $(srctree)/arch/$(SRCARCH)/scripts/pvcheck.sed FORCE
+ $(call if_changed_dep,as_s_S)
+$(obj)/pvchk-%.s: $(obj)/pvchk-sed-%.s FORCE
+ $(call if_changed,pv_check_sed)
+$(obj)/pvchk-%.o: $(obj)/pvchk-%.s FORCE
+ $(call if_changed,as_o_S)
+.PRECIOUS: $(obj)/pvchk-sed-%.s $(obj)/pvchk-%.s $(obj)/pvchk-%.o
#include <asm/numa.h>
#include <asm/sal.h>
#include <asm/cyclone.h>
+#include <asm/xen/hypervisor.h>
#define BAD_MADT_ENTRY(entry, end) ( \
(!entry) || (unsigned long)entry + sizeof(*entry) > end || \
struct acpi_table_rsdp *rsdp;
struct acpi_table_xsdt *xsdt;
struct acpi_table_header *hdr;
+#ifdef CONFIG_DMAR
+ u64 i, nentries;
+#endif
rsdp_phys = acpi_find_rsdp();
if (!rsdp_phys) {
return "uv";
else
return "sn2";
+ } else if (xen_pv_domain() && !strcmp(hdr->oem_id, "XEN")) {
+ return "xen";
+ }
+
+#ifdef CONFIG_DMAR
+ /* Look for Intel IOMMU */
+ nentries = (hdr->length - sizeof(*hdr)) /
+ sizeof(xsdt->table_offset_entry[0]);
+ for (i = 0; i < nentries; i++) {
+ hdr = __va(xsdt->table_offset_entry[i]);
+ if (strncmp(hdr->signature, ACPI_SIG_DMAR,
+ sizeof(ACPI_SIG_DMAR) - 1) == 0)
+ return "dig_vtd";
}
+#endif
return "dig";
#else
return "uv";
# elif defined (CONFIG_IA64_DIG)
return "dig";
+# elif defined (CONFIG_IA64_XEN_GUEST)
+ return "xen";
+# elif defined(CONFIG_IA64_DIG_VTD)
+ return "dig_vtd";
# else
# error Unknown platform. Fix acpi.c.
# endif
#include <asm/sigcontext.h>
#include <asm/mca.h>
+#include <asm/xen/interface.h>
+#include <asm/xen/hypervisor.h>
+
#include "../kernel/sigframe.h"
#include "../kernel/fsyscall_gtod_data.h"
offsetof (struct itc_jitter_data_t, itc_jitter));
DEFINE(IA64_ITC_LASTCYCLE_OFFSET,
offsetof (struct itc_jitter_data_t, itc_lastcycle));
+
+#ifdef CONFIG_XEN
+ BLANK();
+
+ DEFINE(XEN_NATIVE_ASM, XEN_NATIVE);
+ DEFINE(XEN_PV_DOMAIN_ASM, XEN_PV_DOMAIN);
+
+#define DEFINE_MAPPED_REG_OFS(sym, field) \
+ DEFINE(sym, (XMAPPEDREGS_OFS + offsetof(struct mapped_regs, field)))
+
+ DEFINE_MAPPED_REG_OFS(XSI_PSR_I_ADDR_OFS, interrupt_mask_addr);
+ DEFINE_MAPPED_REG_OFS(XSI_IPSR_OFS, ipsr);
+ DEFINE_MAPPED_REG_OFS(XSI_IIP_OFS, iip);
+ DEFINE_MAPPED_REG_OFS(XSI_IFS_OFS, ifs);
+ DEFINE_MAPPED_REG_OFS(XSI_PRECOVER_IFS_OFS, precover_ifs);
+ DEFINE_MAPPED_REG_OFS(XSI_ISR_OFS, isr);
+ DEFINE_MAPPED_REG_OFS(XSI_IFA_OFS, ifa);
+ DEFINE_MAPPED_REG_OFS(XSI_IIPA_OFS, iipa);
+ DEFINE_MAPPED_REG_OFS(XSI_IIM_OFS, iim);
+ DEFINE_MAPPED_REG_OFS(XSI_IHA_OFS, iha);
+ DEFINE_MAPPED_REG_OFS(XSI_ITIR_OFS, itir);
+ DEFINE_MAPPED_REG_OFS(XSI_PSR_IC_OFS, interrupt_collection_enabled);
+ DEFINE_MAPPED_REG_OFS(XSI_BANKNUM_OFS, banknum);
+ DEFINE_MAPPED_REG_OFS(XSI_BANK0_R16_OFS, bank0_regs[0]);
+ DEFINE_MAPPED_REG_OFS(XSI_BANK1_R16_OFS, bank1_regs[0]);
+ DEFINE_MAPPED_REG_OFS(XSI_B0NATS_OFS, vbnat);
+ DEFINE_MAPPED_REG_OFS(XSI_B1NATS_OFS, vnat);
+#endif /* CONFIG_XEN */
}
stf.spill [r16]=f10
stf.spill [r17]=f11
br.call.sptk.many rp=syscall_trace_enter // give parent a chance to catch syscall args
+ cmp.lt p6,p0=r8,r0 // check tracehook
+ adds r2=PT(R8)+16,sp // r2 = &pt_regs.r8
+ adds r3=PT(R10)+16,sp // r3 = &pt_regs.r10
+ mov r10=0
+(p6) br.cond.sptk strace_error // syscall failed ->
adds r16=PT(F6)+16,sp
adds r17=PT(F7)+16,sp
;;
mov b0=r29 // restore b0
;;
st8 [r17]=r18 // store back updated PTE
- itc.d r18 // install updated PTE
+ ITC_D(p0, r18, r16) // install updated PTE
#endif
mov pr=r31,-1 // restore pr
RFI
mov b0=r29 // restore b0
;;
st8 [r17]=r18 // store back updated PTE
- itc.i r18 // install updated PTE
+ ITC_I(p0, r18, r16) // install updated PTE
#endif /* !CONFIG_SMP */
mov pr=r31,-1
RFI
or r18=_PAGE_A,r18 // set the accessed bit
;;
st8 [r17]=r18 // store back updated PTE
- itc.d r18 // install updated PTE
+ ITC_D(p0, r18, r16) // install updated PTE
#endif
mov b0=r29 // restore b0
mov pr=r31,-1
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/msi.h>
+#include <linux/dmar.h>
#include <asm/smp.h>
/*
return ia64_teardown_msi_irq(irq);
}
+
+#ifdef CONFIG_DMAR
+#ifdef CONFIG_SMP
+static void dmar_msi_set_affinity(unsigned int irq, cpumask_t mask)
+{
+ struct irq_cfg *cfg = irq_cfg + irq;
+ struct msi_msg msg;
+ int cpu = first_cpu(mask);
+
+
+ if (!cpu_online(cpu))
+ return;
+
+ if (irq_prepare_move(irq, cpu))
+ return;
+
+ dmar_msi_read(irq, &msg);
+
+ msg.data &= ~MSI_DATA_VECTOR_MASK;
+ msg.data |= MSI_DATA_VECTOR(cfg->vector);
+ msg.address_lo &= ~MSI_ADDR_DESTID_MASK;
+ msg.address_lo |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
+
+ dmar_msi_write(irq, &msg);
+ irq_desc[irq].affinity = mask;
+}
+#endif /* CONFIG_SMP */
+
+struct irq_chip dmar_msi_type = {
+ .name = "DMAR_MSI",
+ .unmask = dmar_msi_unmask,
+ .mask = dmar_msi_mask,
+ .ack = ia64_ack_msi_irq,
+#ifdef CONFIG_SMP
+ .set_affinity = dmar_msi_set_affinity,
+#endif
+ .retrigger = ia64_msi_retrigger_irq,
+};
+
+static int
+msi_compose_msg(struct pci_dev *pdev, unsigned int irq, struct msi_msg *msg)
+{
+ struct irq_cfg *cfg = irq_cfg + irq;
+ unsigned dest;
+ cpumask_t mask;
+
+ cpus_and(mask, irq_to_domain(irq), cpu_online_map);
+ dest = cpu_physical_id(first_cpu(mask));
+
+ msg->address_hi = 0;
+ msg->address_lo =
+ MSI_ADDR_HEADER |
+ MSI_ADDR_DESTMODE_PHYS |
+ MSI_ADDR_REDIRECTION_CPU |
+ MSI_ADDR_DESTID_CPU(dest);
+
+ msg->data =
+ MSI_DATA_TRIGGER_EDGE |
+ MSI_DATA_LEVEL_ASSERT |
+ MSI_DATA_DELIVERY_FIXED |
+ MSI_DATA_VECTOR(cfg->vector);
+ return 0;
+}
+
+int arch_setup_dmar_msi(unsigned int irq)
+{
+ int ret;
+ struct msi_msg msg;
+
+ ret = msi_compose_msg(NULL, irq, &msg);
+ if (ret < 0)
+ return ret;
+ dmar_msi_write(irq, &msg);
+ set_irq_chip_and_handler_name(irq, &dmar_msi_type, handle_edge_irq,
+ "edge");
+ return 0;
+}
+#endif /* CONFIG_DMAR */
+
#include <linux/kbuild.h>
#include <linux/threads.h>
#include <asm/native/irq.h>
+#include <asm/xen/irq.h>
void foo(void)
{
struct pv_iosapic_ops pv_iosapic_ops = {
.pcat_compat_init = ia64_native_iosapic_pcat_compat_init,
- .get_irq_chip = ia64_native_iosapic_get_irq_chip,
+ .__get_irq_chip = ia64_native_iosapic_get_irq_chip,
.__read = ia64_native_iosapic_read,
.__write = ia64_native_iosapic_write,
*
*/
-#ifdef __IA64_ASM_PARAVIRTUALIZED_XEN
+#ifdef __IA64_ASM_PARAVIRTUALIZED_PVCHECK
+#include <asm/native/pvchk_inst.h>
+#elif defined(__IA64_ASM_PARAVIRTUALIZED_XEN)
#include <asm/xen/inst.h>
#include <asm/xen/minstate.h>
#else
--- /dev/null
+/*
+ * Dynamic DMA mapping support.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <linux/module.h>
+#include <linux/dmar.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/machvec.h>
+#include <asm/system.h>
+
+#ifdef CONFIG_DMAR
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+#include <asm/page.h>
+#include <asm/iommu.h>
+
+dma_addr_t bad_dma_address __read_mostly;
+EXPORT_SYMBOL(bad_dma_address);
+
+static int iommu_sac_force __read_mostly;
+
+int no_iommu __read_mostly;
+#ifdef CONFIG_IOMMU_DEBUG
+int force_iommu __read_mostly = 1;
+#else
+int force_iommu __read_mostly;
+#endif
+
+/* Set this to 1 if there is a HW IOMMU in the system */
+int iommu_detected __read_mostly;
+
+/* Dummy device used for NULL arguments (normally ISA). Better would
+ be probably a smaller DMA mask, but this is bug-to-bug compatible
+ to i386. */
+struct device fallback_dev = {
+ .bus_id = "fallback device",
+ .coherent_dma_mask = DMA_32BIT_MASK,
+ .dma_mask = &fallback_dev.coherent_dma_mask,
+};
+
+void __init pci_iommu_alloc(void)
+{
+ /*
+ * The order of these functions is important for
+ * fall-back/fail-over reasons
+ */
+ detect_intel_iommu();
+
+#ifdef CONFIG_SWIOTLB
+ pci_swiotlb_init();
+#endif
+}
+
+static int __init pci_iommu_init(void)
+{
+ if (iommu_detected)
+ intel_iommu_init();
+
+ return 0;
+}
+
+/* Must execute after PCI subsystem */
+fs_initcall(pci_iommu_init);
+
+void pci_iommu_shutdown(void)
+{
+ return;
+}
+
+void __init
+iommu_dma_init(void)
+{
+ return;
+}
+
+struct dma_mapping_ops *dma_ops;
+EXPORT_SYMBOL(dma_ops);
+
+int iommu_dma_supported(struct device *dev, u64 mask)
+{
+ struct dma_mapping_ops *ops = get_dma_ops(dev);
+
+#ifdef CONFIG_PCI
+ if (mask > 0xffffffff && forbid_dac > 0) {
+ dev_info(dev, "Disallowing DAC for device\n");
+ return 0;
+ }
+#endif
+
+ if (ops->dma_supported_op)
+ return ops->dma_supported_op(dev, mask);
+
+ /* Copied from i386. Doesn't make much sense, because it will
+ only work for pci_alloc_coherent.
+ The caller just has to use GFP_DMA in this case. */
+ if (mask < DMA_24BIT_MASK)
+ return 0;
+
+ /* Tell the device to use SAC when IOMMU force is on. This
+ allows the driver to use cheaper accesses in some cases.
+
+ Problem with this is that if we overflow the IOMMU area and
+ return DAC as fallback address the device may not handle it
+ correctly.
+
+ As a special case some controllers have a 39bit address
+ mode that is as efficient as 32bit (aic79xx). Don't force
+ SAC for these. Assume all masks <= 40 bits are of this
+ type. Normally this doesn't make any difference, but gives
+ more gentle handling of IOMMU overflow. */
+ if (iommu_sac_force && (mask >= DMA_40BIT_MASK)) {
+ dev_info(dev, "Force SAC with mask %lx\n", mask);
+ return 0;
+ }
+
+ return 1;
+}
+EXPORT_SYMBOL(iommu_dma_supported);
+
+#endif
--- /dev/null
+/* Glue code to lib/swiotlb.c */
+
+#include <linux/pci.h>
+#include <linux/cache.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/swiotlb.h>
+#include <asm/dma.h>
+#include <asm/iommu.h>
+#include <asm/machvec.h>
+
+int swiotlb __read_mostly;
+EXPORT_SYMBOL(swiotlb);
+
+struct dma_mapping_ops swiotlb_dma_ops = {
+ .mapping_error = swiotlb_dma_mapping_error,
+ .alloc_coherent = swiotlb_alloc_coherent,
+ .free_coherent = swiotlb_free_coherent,
+ .map_single = swiotlb_map_single,
+ .unmap_single = swiotlb_unmap_single,
+ .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
+ .sync_single_for_device = swiotlb_sync_single_for_device,
+ .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
+ .sync_single_range_for_device = swiotlb_sync_single_range_for_device,
+ .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
+ .sync_sg_for_device = swiotlb_sync_sg_for_device,
+ .map_sg = swiotlb_map_sg,
+ .unmap_sg = swiotlb_unmap_sg,
+ .dma_supported_op = swiotlb_dma_supported,
+};
+
+void __init pci_swiotlb_init(void)
+{
+ if (!iommu_detected) {
+#ifdef CONFIG_IA64_GENERIC
+ swiotlb = 1;
+ printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
+ machvec_init("dig");
+ swiotlb_init();
+ dma_ops = &swiotlb_dma_ops;
+#else
+ panic("Unable to find Intel IOMMU");
+#endif
+ }
+}
#include <linux/capability.h>
#include <linux/rcupdate.h>
#include <linux/completion.h>
+#include <linux/tracehook.h>
#include <asm/errno.h>
#include <asm/intrinsics.h>
PFM_SET_WORK_PENDING(task, 1);
- tsk_set_notify_resume(task);
+ set_notify_resume(task);
/*
* XXX: send reschedule if task runs on another CPU
PFM_SET_WORK_PENDING(current, 0);
- tsk_clear_notify_resume(current);
-
regs = task_pt_regs(current);
/*
* when coming from ctxsw, current still points to the
* previous task, therefore we must work with task and not current.
*/
- tsk_set_notify_resume(task);
+ set_notify_resume(task);
}
/*
* defer until state is changed (shorten spin window). the context is locked
#include <linux/delay.h>
#include <linux/kdebug.h>
#include <linux/utsname.h>
+#include <linux/tracehook.h>
#include <asm/cpu.h>
#include <asm/delay.h>
show_stack(NULL, NULL);
}
-void tsk_clear_notify_resume(struct task_struct *tsk)
-{
-#ifdef CONFIG_PERFMON
- if (tsk->thread.pfm_needs_checking)
- return;
-#endif
- if (test_ti_thread_flag(task_thread_info(tsk), TIF_RESTORE_RSE))
- return;
- clear_ti_thread_flag(task_thread_info(tsk), TIF_NOTIFY_RESUME);
-}
-
-/*
- * do_notify_resume_user():
- * Called from notify_resume_user at entry.S, with interrupts disabled.
- */
void
do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
{
ia64_do_signal(scr, in_syscall);
}
+ if (test_thread_flag(TIF_NOTIFY_RESUME)) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(&scr->pt);
+ }
+
/* copy user rbs to kernel rbs */
if (unlikely(test_thread_flag(TIF_RESTORE_RSE))) {
local_irq_enable(); /* force interrupt enable */
/* We don't actually take CPU down, just spin without interrupts. */
static inline void play_dead(void)
{
- extern void ia64_cpu_local_tick (void);
unsigned int this_cpu = smp_processor_id();
/* Ack it */
#include <linux/signal.h>
#include <linux/regset.h>
#include <linux/elf.h>
+#include <linux/tracehook.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
{
if (test_and_set_tsk_thread_flag(current, TIF_RESTORE_RSE))
return;
- tsk_set_notify_resume(current);
+ set_notify_resume(current);
unw_init_running(do_sync_rbs, ia64_sync_user_rbs);
}
void ia64_sync_krbs(void)
{
clear_tsk_thread_flag(current, TIF_RESTORE_RSE);
- tsk_clear_notify_resume(current);
unw_init_running(do_sync_rbs, ia64_sync_kernel_rbs);
}
spin_lock_irq(&child->sighand->siglock);
if (child->state == TASK_STOPPED &&
!test_and_set_tsk_thread_flag(child, TIF_RESTORE_RSE)) {
- tsk_set_notify_resume(child);
+ set_notify_resume(child);
child->state = TASK_TRACED;
stopped = 1;
}
-static void
-syscall_trace (void)
-{
- /*
- * The 0x80 provides a way for the tracing parent to
- * distinguish between a syscall stop and SIGTRAP delivery.
- */
- ptrace_notify(SIGTRAP
- | ((current->ptrace & PT_TRACESYSGOOD) ? 0x80 : 0));
-
- /*
- * This isn't the same as continuing with a signal, but it
- * will do for normal use. strace only continues with a
- * signal if the stopping signal is not SIGTRAP. -brl
- */
- if (current->exit_code) {
- send_sig(current->exit_code, current, 1);
- current->exit_code = 0;
- }
-}
-
/* "asmlinkage" so the input arguments are preserved... */
-asmlinkage void
+asmlinkage long
syscall_trace_enter (long arg0, long arg1, long arg2, long arg3,
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
- if (test_thread_flag(TIF_SYSCALL_TRACE)
- && (current->ptrace & PT_PTRACED))
- syscall_trace();
+ if (test_thread_flag(TIF_SYSCALL_TRACE))
+ if (tracehook_report_syscall_entry(®s))
+ return -ENOSYS;
/* copy user rbs to kernel rbs */
if (test_thread_flag(TIF_RESTORE_RSE))
audit_syscall_entry(arch, syscall, arg0, arg1, arg2, arg3);
}
+ return 0;
}
/* "asmlinkage" so the input arguments are preserved... */
long arg4, long arg5, long arg6, long arg7,
struct pt_regs regs)
{
+ int step;
+
if (unlikely(current->audit_context)) {
int success = AUDITSC_RESULT(regs.r10);
long result = regs.r8;
audit_syscall_exit(success, result);
}
- if ((test_thread_flag(TIF_SYSCALL_TRACE)
- || test_thread_flag(TIF_SINGLESTEP))
- && (current->ptrace & PT_PTRACED))
- syscall_trace();
+ step = test_thread_flag(TIF_SINGLESTEP);
+ if (step || test_thread_flag(TIF_SYSCALL_TRACE))
+ tracehook_report_syscall_exit(®s, step);
/* copy user rbs to kernel rbs */
if (test_thread_flag(TIF_RESTORE_RSE))
{
if (test_and_set_tsk_thread_flag(target, TIF_RESTORE_RSE))
return 0;
- tsk_set_notify_resume(target);
+ set_notify_resume(target);
return do_regset_call(do_gpregs_writeback, target, regset, 0, 0,
NULL, NULL);
}
#endif
return &user_ia64_view;
}
+
+struct syscall_get_set_args {
+ unsigned int i;
+ unsigned int n;
+ unsigned long *args;
+ struct pt_regs *regs;
+ int rw;
+};
+
+static void syscall_get_set_args_cb(struct unw_frame_info *info, void *data)
+{
+ struct syscall_get_set_args *args = data;
+ struct pt_regs *pt = args->regs;
+ unsigned long *krbs, cfm, ndirty;
+ int i, count;
+
+ if (unw_unwind_to_user(info) < 0)
+ return;
+
+ cfm = pt->cr_ifs;
+ krbs = (unsigned long *)info->task + IA64_RBS_OFFSET/8;
+ ndirty = ia64_rse_num_regs(krbs, krbs + (pt->loadrs >> 19));
+
+ count = 0;
+ if (in_syscall(pt))
+ count = min_t(int, args->n, cfm & 0x7f);
+
+ for (i = 0; i < count; i++) {
+ if (args->rw)
+ *ia64_rse_skip_regs(krbs, ndirty + i + args->i) =
+ args->args[i];
+ else
+ args->args[i] = *ia64_rse_skip_regs(krbs,
+ ndirty + i + args->i);
+ }
+
+ if (!args->rw) {
+ while (i < args->n) {
+ args->args[i] = 0;
+ i++;
+ }
+ }
+}
+
+void ia64_syscall_get_set_arguments(struct task_struct *task,
+ struct pt_regs *regs, unsigned int i, unsigned int n,
+ unsigned long *args, int rw)
+{
+ struct syscall_get_set_args data = {
+ .i = i,
+ .n = n,
+ .args = args,
+ .regs = regs,
+ .rw = rw,
+ };
+
+ if (task == current)
+ unw_init_running(syscall_get_set_args_cb, &data);
+ else {
+ struct unw_frame_info ufi;
+ memset(&ufi, 0, sizeof(ufi));
+ unw_init_from_blocked_task(&ufi, task);
+ syscall_get_set_args_cb(&ufi, &data);
+ }
+}
*/
#define I_CACHE_STRIDE_SHIFT 5 /* Safest way to go: 32 bytes by 32 bytes */
unsigned long ia64_i_cache_stride_shift = ~0;
+/*
+ * "clflush_cache_range()" needs to know what processor dependent stride size to
+ * use when it flushes cache lines including both d-cache and i-cache.
+ */
+/* Safest way to go: 32 bytes by 32 bytes */
+#define CACHE_STRIDE_SHIFT 5
+unsigned long ia64_cache_stride_shift = ~0;
/*
* The merge_mask variable needs to be set to (max(iommu_page_size(iommu)) - 1). This
}
/*
- * Calculate the max. cache line size.
+ * Do the following calculations:
*
- * In addition, the minimum of the i-cache stride sizes is calculated for
- * "flush_icache_range()".
+ * 1. the max. cache line size.
+ * 2. the minimum of the i-cache stride sizes for "flush_icache_range()".
+ * 3. the minimum of the cache stride sizes for "clflush_cache_range()".
*/
static void __cpuinit
-get_max_cacheline_size (void)
+get_cache_info(void)
{
unsigned long line_size, max = 1;
u64 l, levels, unique_caches;
max = SMP_CACHE_BYTES;
/* Safest setup for "flush_icache_range()" */
ia64_i_cache_stride_shift = I_CACHE_STRIDE_SHIFT;
+ /* Safest setup for "clflush_cache_range()" */
+ ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
goto out;
}
for (l = 0; l < levels; ++l) {
- status = ia64_pal_cache_config_info(l, /* cache_type (data_or_unified)= */ 2,
- &cci);
+ /* cache_type (data_or_unified)=2 */
+ status = ia64_pal_cache_config_info(l, 2, &cci);
if (status != 0) {
printk(KERN_ERR
"%s: ia64_pal_cache_config_info(l=%lu, 2) failed (status=%ld)\n",
max = SMP_CACHE_BYTES;
/* The safest setup for "flush_icache_range()" */
cci.pcci_stride = I_CACHE_STRIDE_SHIFT;
+ /* The safest setup for "clflush_cache_range()" */
+ ia64_cache_stride_shift = CACHE_STRIDE_SHIFT;
cci.pcci_unified = 1;
+ } else {
+ if (cci.pcci_stride < ia64_cache_stride_shift)
+ ia64_cache_stride_shift = cci.pcci_stride;
+
+ line_size = 1 << cci.pcci_line_size;
+ if (line_size > max)
+ max = line_size;
}
- line_size = 1 << cci.pcci_line_size;
- if (line_size > max)
- max = line_size;
+
if (!cci.pcci_unified) {
- status = ia64_pal_cache_config_info(l,
- /* cache_type (instruction)= */ 1,
- &cci);
+ /* cache_type (instruction)=1*/
+ status = ia64_pal_cache_config_info(l, 1, &cci);
if (status != 0) {
printk(KERN_ERR
"%s: ia64_pal_cache_config_info(l=%lu, 1) failed (status=%ld)\n",
}
#endif
- get_max_cacheline_size();
+ get_cache_info();
/*
* We can't pass "local_cpu_data" to identify_cpu() because we haven't called
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/ptrace.h>
+#include <linux/tracehook.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/smp.h>
sigaddset(¤t->blocked, sig);
recalc_sigpending();
spin_unlock_irq(¤t->sighand->siglock);
+
+ /*
+ * Let tracing know that we've done the handler setup.
+ */
+ tracehook_signal_handler(sig, info, ka, &scr->pt,
+ test_thread_flag(TIF_SINGLESTEP));
+
return 1;
}
mov ar.lc=r3 // restore ar.lc
br.ret.sptk.many rp
END(flush_icache_range)
+
+ /*
+ * clflush_cache_range(start,size)
+ *
+ * Flush cache lines from start to start+size-1.
+ *
+ * Must deal with range from start to start+size-1 but nothing else
+ * (need to be careful not to touch addresses that may be
+ * unmapped).
+ *
+ * Note: "in0" and "in1" are preserved for debugging purposes.
+ */
+ .section .kprobes.text,"ax"
+GLOBAL_ENTRY(clflush_cache_range)
+
+ .prologue
+ alloc r2=ar.pfs,2,0,0,0
+ movl r3=ia64_cache_stride_shift
+ mov r21=1
+ add r22=in1,in0
+ ;;
+ ld8 r20=[r3] // r20: stride shift
+ sub r22=r22,r0,1 // last byte address
+ ;;
+ shr.u r23=in0,r20 // start / (stride size)
+ shr.u r22=r22,r20 // (last byte address) / (stride size)
+ shl r21=r21,r20 // r21: stride size of the i-cache(s)
+ ;;
+ sub r8=r22,r23 // number of strides - 1
+ shl r24=r23,r20 // r24: addresses for "fc" =
+ // "start" rounded down to stride
+ // boundary
+ .save ar.lc,r3
+ mov r3=ar.lc // save ar.lc
+ ;;
+
+ .body
+ mov ar.lc=r8
+ ;;
+ /*
+ * 32 byte aligned loop, even number of (actually 2) bundles
+ */
+.Loop_fc:
+ fc r24 // issuable on M0 only
+ add r24=r21,r24 // we flush "stride size" bytes per iteration
+ nop.i 0
+ br.cloop.sptk.few .Loop_fc
+ ;;
+ sync.i
+ ;;
+ srlz.i
+ ;;
+ mov ar.lc=r3 // restore ar.lc
+ br.ret.sptk.many rp
+END(clflush_cache_range)
per_cpu(ia64_tr_num, cpu) =
vm_info_1.pal_vm_info_1_s.max_dtr_entry+1;
if (per_cpu(ia64_tr_num, cpu) > IA64_TR_ALLOC_MAX) {
+ static int justonce = 1;
per_cpu(ia64_tr_num, cpu) = IA64_TR_ALLOC_MAX;
- printk(KERN_DEBUG "TR register number exceeds IA64_TR_ALLOC_MAX!"
- "IA64_TR_ALLOC_MAX should be extended\n");
+ if (justonce) {
+ justonce = 0;
+ printk(KERN_DEBUG "TR register number exceeds "
+ "IA64_TR_ALLOC_MAX!\n");
+ }
}
}
--- /dev/null
+#
+# Checker for paravirtualizations of privileged operations.
+#
+s/ssm.*psr\.ic.*/.warning \"ssm psr.ic should not be used directly\"/g
+s/rsm.*psr\.ic.*/.warning \"rsm psr.ic should not be used directly\"/g
+s/ssm.*psr\.i.*/.warning \"ssm psr.i should not be used directly\"/g
+s/rsm.*psr\.i.*/.warning \"rsm psr.i should not be used directly\"/g
+s/ssm.*psr\.dt.*/.warning \"ssm psr.dt should not be used directly\"/g
+s/rsm.*psr\.dt.*/.warning \"rsm psr.dt should not be used directly\"/g
+s/mov.*=.*cr\.ifa/.warning \"cr.ifa should not used directly\"/g
+s/mov.*=.*cr\.itir/.warning \"cr.itir should not used directly\"/g
+s/mov.*=.*cr\.isr/.warning \"cr.isr should not used directly\"/g
+s/mov.*=.*cr\.iha/.warning \"cr.iha should not used directly\"/g
+s/mov.*=.*cr\.ipsr/.warning \"cr.ipsr should not used directly\"/g
+s/mov.*=.*cr\.iim/.warning \"cr.iim should not used directly\"/g
+s/mov.*=.*cr\.iip/.warning \"cr.iip should not used directly\"/g
+s/mov.*=.*cr\.ivr/.warning \"cr.ivr should not used directly\"/g
+s/mov.*=[^\.]*psr/.warning \"psr should not used directly\"/g # avoid ar.fpsr
+s/mov.*=.*ar\.eflags/.warning \"ar.eflags should not used directly\"/g
+s/mov.*cr\.ifa.*=.*/.warning \"cr.ifa should not used directly\"/g
+s/mov.*cr\.itir.*=.*/.warning \"cr.itir should not used directly\"/g
+s/mov.*cr\.iha.*=.*/.warning \"cr.iha should not used directly\"/g
+s/mov.*cr\.ipsr.*=.*/.warning \"cr.ipsr should not used directly\"/g
+s/mov.*cr\.ifs.*=.*/.warning \"cr.ifs should not used directly\"/g
+s/mov.*cr\.iip.*=.*/.warning \"cr.iip should not used directly\"/g
+s/mov.*cr\.kr.*=.*/.warning \"cr.kr should not used directly\"/g
+s/mov.*ar\.eflags.*=.*/.warning \"ar.eflags should not used directly\"/g
+s/itc\.i.*/.warning \"itc.i should not be used directly.\"/g
+s/itc\.d.*/.warning \"itc.d should not be used directly.\"/g
+s/bsw\.0/.warning \"bsw.0 should not be used directly.\"/g
+s/bsw\.1/.warning \"bsw.1 should not be used directly.\"/g
+s/ptc\.ga.*/.warning \"ptc.ga should not be used directly.\"/g
--- /dev/null
+#
+# This Kconfig describes xen/ia64 options
+#
+
+config XEN
+ bool "Xen hypervisor support"
+ default y
+ depends on PARAVIRT && MCKINLEY && IA64_PAGE_SIZE_16KB && EXPERIMENTAL
+ select XEN_XENCOMM
+ select NO_IDLE_HZ
+
+ # those are required to save/restore.
+ select ARCH_SUSPEND_POSSIBLE
+ select SUSPEND
+ select PM_SLEEP
+ help
+ Enable Xen hypervisor support. Resulting kernel runs
+ both as a guest OS on Xen and natively on hardware.
+
+config XEN_XENCOMM
+ depends on XEN
+ bool
+
+config NO_IDLE_HZ
+ depends on XEN
+ bool
--- /dev/null
+#
+# Makefile for Xen components
+#
+
+obj-y := hypercall.o xenivt.o xensetup.o xen_pv_ops.o irq_xen.o \
+ hypervisor.o xencomm.o xcom_hcall.o grant-table.o time.o suspend.o
+
+obj-$(CONFIG_IA64_GENERIC) += machvec.o
+
+AFLAGS_xenivt.o += -D__IA64_ASM_PARAVIRTUALIZED_XEN
+
+# xen multi compile
+ASM_PARAVIRT_MULTI_COMPILE_SRCS = ivt.S entry.S
+ASM_PARAVIRT_OBJS = $(addprefix xen-,$(ASM_PARAVIRT_MULTI_COMPILE_SRCS:.S=.o))
+obj-y += $(ASM_PARAVIRT_OBJS)
+define paravirtualized_xen
+AFLAGS_$(1) += -D__IA64_ASM_PARAVIRTUALIZED_XEN
+endef
+$(foreach o,$(ASM_PARAVIRT_OBJS),$(eval $(call paravirtualized_xen,$(o))))
+
+$(obj)/xen-%.o: $(src)/../kernel/%.S FORCE
+ $(call if_changed_dep,as_o_S)
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/grant-table.c
+ *
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+#include <linux/mm.h>
+
+#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
+#include <xen/grant_table.h>
+
+#include <asm/xen/hypervisor.h>
+
+struct vm_struct *xen_alloc_vm_area(unsigned long size)
+{
+ int order;
+ unsigned long virt;
+ unsigned long nr_pages;
+ struct vm_struct *area;
+
+ order = get_order(size);
+ virt = __get_free_pages(GFP_KERNEL, order);
+ if (virt == 0)
+ goto err0;
+ nr_pages = 1 << order;
+ scrub_pages(virt, nr_pages);
+
+ area = kmalloc(sizeof(*area), GFP_KERNEL);
+ if (area == NULL)
+ goto err1;
+
+ area->flags = VM_IOREMAP;
+ area->addr = (void *)virt;
+ area->size = size;
+ area->pages = NULL;
+ area->nr_pages = nr_pages;
+ area->phys_addr = 0; /* xenbus_map_ring_valloc uses this field! */
+
+ return area;
+
+err1:
+ free_pages(virt, order);
+err0:
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(xen_alloc_vm_area);
+
+void xen_free_vm_area(struct vm_struct *area)
+{
+ unsigned int order = get_order(area->size);
+ unsigned long i;
+ unsigned long phys_addr = __pa(area->addr);
+
+ /* This area is used for foreign page mappping.
+ * So underlying machine page may not be assigned. */
+ for (i = 0; i < (1 << order); i++) {
+ unsigned long ret;
+ unsigned long gpfn = (phys_addr >> PAGE_SHIFT) + i;
+ struct xen_memory_reservation reservation = {
+ .nr_extents = 1,
+ .address_bits = 0,
+ .extent_order = 0,
+ .domid = DOMID_SELF
+ };
+ set_xen_guest_handle(reservation.extent_start, &gpfn);
+ ret = HYPERVISOR_memory_op(XENMEM_populate_physmap,
+ &reservation);
+ BUG_ON(ret != 1);
+ }
+ free_pages((unsigned long)area->addr, order);
+ kfree(area);
+}
+EXPORT_SYMBOL_GPL(xen_free_vm_area);
+
+
+/****************************************************************************
+ * grant table hack
+ * cmd: GNTTABOP_xxx
+ */
+
+int arch_gnttab_map_shared(unsigned long *frames, unsigned long nr_gframes,
+ unsigned long max_nr_gframes,
+ struct grant_entry **__shared)
+{
+ *__shared = __va(frames[0] << PAGE_SHIFT);
+ return 0;
+}
+
+void arch_gnttab_unmap_shared(struct grant_entry *shared,
+ unsigned long nr_gframes)
+{
+ /* nothing */
+}
+
+static void
+gnttab_map_grant_ref_pre(struct gnttab_map_grant_ref *uop)
+{
+ uint32_t flags;
+
+ flags = uop->flags;
+
+ if (flags & GNTMAP_host_map) {
+ if (flags & GNTMAP_application_map) {
+ printk(KERN_DEBUG
+ "GNTMAP_application_map is not supported yet: "
+ "flags 0x%x\n", flags);
+ BUG();
+ }
+ if (flags & GNTMAP_contains_pte) {
+ printk(KERN_DEBUG
+ "GNTMAP_contains_pte is not supported yet: "
+ "flags 0x%x\n", flags);
+ BUG();
+ }
+ } else if (flags & GNTMAP_device_map) {
+ printk("GNTMAP_device_map is not supported yet 0x%x\n", flags);
+ BUG(); /* not yet. actually this flag is not used. */
+ } else {
+ BUG();
+ }
+}
+
+int
+HYPERVISOR_grant_table_op(unsigned int cmd, void *uop, unsigned int count)
+{
+ if (cmd == GNTTABOP_map_grant_ref) {
+ unsigned int i;
+ for (i = 0; i < count; i++) {
+ gnttab_map_grant_ref_pre(
+ (struct gnttab_map_grant_ref *)uop + i);
+ }
+ }
+ return xencomm_hypercall_grant_table_op(cmd, uop, count);
+}
+
+EXPORT_SYMBOL(HYPERVISOR_grant_table_op);
--- /dev/null
+/*
+ * Support routines for Xen hypercalls
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ * Copyright (C) 2008 Yaozu (Eddie) Dong <eddie.dong@intel.com>
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/intrinsics.h>
+#include <asm/xen/privop.h>
+
+/*
+ * Hypercalls without parameter.
+ */
+#define __HCALL0(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
+
+/*
+ * Hypercalls with 1 parameter.
+ */
+#define __HCALL1(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ mov r8=r32; \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
+
+/*
+ * Hypercalls with 2 parameters.
+ */
+#define __HCALL2(name,hcall) \
+ GLOBAL_ENTRY(name); \
+ mov r8=r32; \
+ mov r9=r33; \
+ break hcall; \
+ br.ret.sptk.many rp; \
+ END(name)
+
+__HCALL0(xen_get_psr, HYPERPRIVOP_GET_PSR)
+__HCALL0(xen_get_ivr, HYPERPRIVOP_GET_IVR)
+__HCALL0(xen_get_tpr, HYPERPRIVOP_GET_TPR)
+__HCALL0(xen_hyper_ssm_i, HYPERPRIVOP_SSM_I)
+
+__HCALL1(xen_set_tpr, HYPERPRIVOP_SET_TPR)
+__HCALL1(xen_eoi, HYPERPRIVOP_EOI)
+__HCALL1(xen_thash, HYPERPRIVOP_THASH)
+__HCALL1(xen_set_itm, HYPERPRIVOP_SET_ITM)
+__HCALL1(xen_get_rr, HYPERPRIVOP_GET_RR)
+__HCALL1(xen_fc, HYPERPRIVOP_FC)
+__HCALL1(xen_get_cpuid, HYPERPRIVOP_GET_CPUID)
+__HCALL1(xen_get_pmd, HYPERPRIVOP_GET_PMD)
+
+__HCALL2(xen_ptcga, HYPERPRIVOP_PTC_GA)
+__HCALL2(xen_set_rr, HYPERPRIVOP_SET_RR)
+__HCALL2(xen_set_kr, HYPERPRIVOP_SET_KR)
+
+#ifdef CONFIG_IA32_SUPPORT
+__HCALL1(xen_get_eflag, HYPERPRIVOP_GET_EFLAG)
+__HCALL1(xen_set_eflag, HYPERPRIVOP_SET_EFLAG) // refer SDM vol1 3.1.8
+#endif /* CONFIG_IA32_SUPPORT */
+
+GLOBAL_ENTRY(xen_set_rr0_to_rr4)
+ mov r8=r32
+ mov r9=r33
+ mov r10=r34
+ mov r11=r35
+ mov r14=r36
+ XEN_HYPER_SET_RR0_TO_RR4
+ br.ret.sptk.many rp
+ ;;
+END(xen_set_rr0_to_rr4)
+
+GLOBAL_ENTRY(xen_send_ipi)
+ mov r14=r32
+ mov r15=r33
+ mov r2=0x400
+ break 0x1000
+ ;;
+ br.ret.sptk.many rp
+ ;;
+END(xen_send_ipi)
+
+GLOBAL_ENTRY(__hypercall)
+ mov r2=r37
+ break 0x1000
+ br.ret.sptk.many b0
+ ;;
+END(__hypercall)
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/hypervisor.c
+ *
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/efi.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+
+struct shared_info *HYPERVISOR_shared_info __read_mostly =
+ (struct shared_info *)XSI_BASE;
+EXPORT_SYMBOL(HYPERVISOR_shared_info);
+
+DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
+
+struct start_info *xen_start_info;
+EXPORT_SYMBOL(xen_start_info);
+
+EXPORT_SYMBOL(xen_domain_type);
+
+EXPORT_SYMBOL(__hypercall);
+
+/* Stolen from arch/x86/xen/enlighten.c */
+/*
+ * Flag to determine whether vcpu info placement is available on all
+ * VCPUs. We assume it is to start with, and then set it to zero on
+ * the first failure. This is because it can succeed on some VCPUs
+ * and not others, since it can involve hypervisor memory allocation,
+ * or because the guest failed to guarantee all the appropriate
+ * constraints on all VCPUs (ie buffer can't cross a page boundary).
+ *
+ * Note that any particular CPU may be using a placed vcpu structure,
+ * but we can only optimise if the all are.
+ *
+ * 0: not available, 1: available
+ */
+
+static void __init xen_vcpu_setup(int cpu)
+{
+ /*
+ * WARNING:
+ * before changing MAX_VIRT_CPUS,
+ * check that shared_info fits on a page
+ */
+ BUILD_BUG_ON(sizeof(struct shared_info) > PAGE_SIZE);
+ per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
+}
+
+void __init xen_setup_vcpu_info_placement(void)
+{
+ int cpu;
+
+ for_each_possible_cpu(cpu)
+ xen_vcpu_setup(cpu);
+}
+
+void __cpuinit
+xen_cpu_init(void)
+{
+ xen_smp_intr_init();
+}
+
+/**************************************************************************
+ * opt feature
+ */
+void
+xen_ia64_enable_opt_feature(void)
+{
+ /* Enable region 7 identity map optimizations in Xen */
+ struct xen_ia64_opt_feature optf;
+
+ optf.cmd = XEN_IA64_OPTF_IDENT_MAP_REG7;
+ optf.on = XEN_IA64_OPTF_ON;
+ optf.pgprot = pgprot_val(PAGE_KERNEL);
+ optf.key = 0; /* No key on linux. */
+ HYPERVISOR_opt_feature(&optf);
+}
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/irq_xen.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/cpu.h>
+
+#include <xen/interface/xen.h>
+#include <xen/interface/callback.h>
+#include <xen/events.h>
+
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+
+/***************************************************************************
+ * pv_irq_ops
+ * irq operations
+ */
+
+static int
+xen_assign_irq_vector(int irq)
+{
+ struct physdev_irq irq_op;
+
+ irq_op.irq = irq;
+ if (HYPERVISOR_physdev_op(PHYSDEVOP_alloc_irq_vector, &irq_op))
+ return -ENOSPC;
+
+ return irq_op.vector;
+}
+
+static void
+xen_free_irq_vector(int vector)
+{
+ struct physdev_irq irq_op;
+
+ if (vector < IA64_FIRST_DEVICE_VECTOR ||
+ vector > IA64_LAST_DEVICE_VECTOR)
+ return;
+
+ irq_op.vector = vector;
+ if (HYPERVISOR_physdev_op(PHYSDEVOP_free_irq_vector, &irq_op))
+ printk(KERN_WARNING "%s: xen_free_irq_vecotr fail vector=%d\n",
+ __func__, vector);
+}
+
+
+static DEFINE_PER_CPU(int, timer_irq) = -1;
+static DEFINE_PER_CPU(int, ipi_irq) = -1;
+static DEFINE_PER_CPU(int, resched_irq) = -1;
+static DEFINE_PER_CPU(int, cmc_irq) = -1;
+static DEFINE_PER_CPU(int, cmcp_irq) = -1;
+static DEFINE_PER_CPU(int, cpep_irq) = -1;
+#define NAME_SIZE 15
+static DEFINE_PER_CPU(char[NAME_SIZE], timer_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], ipi_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], resched_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cmc_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cmcp_name);
+static DEFINE_PER_CPU(char[NAME_SIZE], cpep_name);
+#undef NAME_SIZE
+
+struct saved_irq {
+ unsigned int irq;
+ struct irqaction *action;
+};
+/* 16 should be far optimistic value, since only several percpu irqs
+ * are registered early.
+ */
+#define MAX_LATE_IRQ 16
+static struct saved_irq saved_percpu_irqs[MAX_LATE_IRQ];
+static unsigned short late_irq_cnt;
+static unsigned short saved_irq_cnt;
+static int xen_slab_ready;
+
+#ifdef CONFIG_SMP
+/* Dummy stub. Though we may check XEN_RESCHEDULE_VECTOR before __do_IRQ,
+ * it ends up to issue several memory accesses upon percpu data and
+ * thus adds unnecessary traffic to other paths.
+ */
+static irqreturn_t
+xen_dummy_handler(int irq, void *dev_id)
+{
+
+ return IRQ_HANDLED;
+}
+
+static struct irqaction xen_ipi_irqaction = {
+ .handler = handle_IPI,
+ .flags = IRQF_DISABLED,
+ .name = "IPI"
+};
+
+static struct irqaction xen_resched_irqaction = {
+ .handler = xen_dummy_handler,
+ .flags = IRQF_DISABLED,
+ .name = "resched"
+};
+
+static struct irqaction xen_tlb_irqaction = {
+ .handler = xen_dummy_handler,
+ .flags = IRQF_DISABLED,
+ .name = "tlb_flush"
+};
+#endif
+
+/*
+ * This is xen version percpu irq registration, which needs bind
+ * to xen specific evtchn sub-system. One trick here is that xen
+ * evtchn binding interface depends on kmalloc because related
+ * port needs to be freed at device/cpu down. So we cache the
+ * registration on BSP before slab is ready and then deal them
+ * at later point. For rest instances happening after slab ready,
+ * we hook them to xen evtchn immediately.
+ *
+ * FIXME: MCA is not supported by far, and thus "nomca" boot param is
+ * required.
+ */
+static void
+__xen_register_percpu_irq(unsigned int cpu, unsigned int vec,
+ struct irqaction *action, int save)
+{
+ irq_desc_t *desc;
+ int irq = 0;
+
+ if (xen_slab_ready) {
+ switch (vec) {
+ case IA64_TIMER_VECTOR:
+ snprintf(per_cpu(timer_name, cpu),
+ sizeof(per_cpu(timer_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_virq_to_irqhandler(VIRQ_ITC, cpu,
+ action->handler, action->flags,
+ per_cpu(timer_name, cpu), action->dev_id);
+ per_cpu(timer_irq, cpu) = irq;
+ break;
+ case IA64_IPI_RESCHEDULE:
+ snprintf(per_cpu(resched_name, cpu),
+ sizeof(per_cpu(resched_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_ipi_to_irqhandler(XEN_RESCHEDULE_VECTOR, cpu,
+ action->handler, action->flags,
+ per_cpu(resched_name, cpu), action->dev_id);
+ per_cpu(resched_irq, cpu) = irq;
+ break;
+ case IA64_IPI_VECTOR:
+ snprintf(per_cpu(ipi_name, cpu),
+ sizeof(per_cpu(ipi_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_ipi_to_irqhandler(XEN_IPI_VECTOR, cpu,
+ action->handler, action->flags,
+ per_cpu(ipi_name, cpu), action->dev_id);
+ per_cpu(ipi_irq, cpu) = irq;
+ break;
+ case IA64_CMC_VECTOR:
+ snprintf(per_cpu(cmc_name, cpu),
+ sizeof(per_cpu(cmc_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_virq_to_irqhandler(VIRQ_MCA_CMC, cpu,
+ action->handler,
+ action->flags,
+ per_cpu(cmc_name, cpu),
+ action->dev_id);
+ per_cpu(cmc_irq, cpu) = irq;
+ break;
+ case IA64_CMCP_VECTOR:
+ snprintf(per_cpu(cmcp_name, cpu),
+ sizeof(per_cpu(cmcp_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_ipi_to_irqhandler(XEN_CMCP_VECTOR, cpu,
+ action->handler,
+ action->flags,
+ per_cpu(cmcp_name, cpu),
+ action->dev_id);
+ per_cpu(cmcp_irq, cpu) = irq;
+ break;
+ case IA64_CPEP_VECTOR:
+ snprintf(per_cpu(cpep_name, cpu),
+ sizeof(per_cpu(cpep_name, cpu)),
+ "%s%d", action->name, cpu);
+ irq = bind_ipi_to_irqhandler(XEN_CPEP_VECTOR, cpu,
+ action->handler,
+ action->flags,
+ per_cpu(cpep_name, cpu),
+ action->dev_id);
+ per_cpu(cpep_irq, cpu) = irq;
+ break;
+ case IA64_CPE_VECTOR:
+ case IA64_MCA_RENDEZ_VECTOR:
+ case IA64_PERFMON_VECTOR:
+ case IA64_MCA_WAKEUP_VECTOR:
+ case IA64_SPURIOUS_INT_VECTOR:
+ /* No need to complain, these aren't supported. */
+ break;
+ default:
+ printk(KERN_WARNING "Percpu irq %d is unsupported "
+ "by xen!\n", vec);
+ break;
+ }
+ BUG_ON(irq < 0);
+
+ if (irq > 0) {
+ /*
+ * Mark percpu. Without this, migrate_irqs() will
+ * mark the interrupt for migrations and trigger it
+ * on cpu hotplug.
+ */
+ desc = irq_desc + irq;
+ desc->status |= IRQ_PER_CPU;
+ }
+ }
+
+ /* For BSP, we cache registered percpu irqs, and then re-walk
+ * them when initializing APs
+ */
+ if (!cpu && save) {
+ BUG_ON(saved_irq_cnt == MAX_LATE_IRQ);
+ saved_percpu_irqs[saved_irq_cnt].irq = vec;
+ saved_percpu_irqs[saved_irq_cnt].action = action;
+ saved_irq_cnt++;
+ if (!xen_slab_ready)
+ late_irq_cnt++;
+ }
+}
+
+static void
+xen_register_percpu_irq(ia64_vector vec, struct irqaction *action)
+{
+ __xen_register_percpu_irq(smp_processor_id(), vec, action, 1);
+}
+
+static void
+xen_bind_early_percpu_irq(void)
+{
+ int i;
+
+ xen_slab_ready = 1;
+ /* There's no race when accessing this cached array, since only
+ * BSP will face with such step shortly
+ */
+ for (i = 0; i < late_irq_cnt; i++)
+ __xen_register_percpu_irq(smp_processor_id(),
+ saved_percpu_irqs[i].irq,
+ saved_percpu_irqs[i].action, 0);
+}
+
+/* FIXME: There's no obvious point to check whether slab is ready. So
+ * a hack is used here by utilizing a late time hook.
+ */
+
+#ifdef CONFIG_HOTPLUG_CPU
+static int __devinit
+unbind_evtchn_callback(struct notifier_block *nfb,
+ unsigned long action, void *hcpu)
+{
+ unsigned int cpu = (unsigned long)hcpu;
+
+ if (action == CPU_DEAD) {
+ /* Unregister evtchn. */
+ if (per_cpu(cpep_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(cpep_irq, cpu), NULL);
+ per_cpu(cpep_irq, cpu) = -1;
+ }
+ if (per_cpu(cmcp_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(cmcp_irq, cpu), NULL);
+ per_cpu(cmcp_irq, cpu) = -1;
+ }
+ if (per_cpu(cmc_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(cmc_irq, cpu), NULL);
+ per_cpu(cmc_irq, cpu) = -1;
+ }
+ if (per_cpu(ipi_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(ipi_irq, cpu), NULL);
+ per_cpu(ipi_irq, cpu) = -1;
+ }
+ if (per_cpu(resched_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(resched_irq, cpu),
+ NULL);
+ per_cpu(resched_irq, cpu) = -1;
+ }
+ if (per_cpu(timer_irq, cpu) >= 0) {
+ unbind_from_irqhandler(per_cpu(timer_irq, cpu), NULL);
+ per_cpu(timer_irq, cpu) = -1;
+ }
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block unbind_evtchn_notifier = {
+ .notifier_call = unbind_evtchn_callback,
+ .priority = 0
+};
+#endif
+
+void xen_smp_intr_init_early(unsigned int cpu)
+{
+#ifdef CONFIG_SMP
+ unsigned int i;
+
+ for (i = 0; i < saved_irq_cnt; i++)
+ __xen_register_percpu_irq(cpu, saved_percpu_irqs[i].irq,
+ saved_percpu_irqs[i].action, 0);
+#endif
+}
+
+void xen_smp_intr_init(void)
+{
+#ifdef CONFIG_SMP
+ unsigned int cpu = smp_processor_id();
+ struct callback_register event = {
+ .type = CALLBACKTYPE_event,
+ .address = { .ip = (unsigned long)&xen_event_callback },
+ };
+
+ if (cpu == 0) {
+ /* Initialization was already done for boot cpu. */
+#ifdef CONFIG_HOTPLUG_CPU
+ /* Register the notifier only once. */
+ register_cpu_notifier(&unbind_evtchn_notifier);
+#endif
+ return;
+ }
+
+ /* This should be piggyback when setup vcpu guest context */
+ BUG_ON(HYPERVISOR_callback_op(CALLBACKOP_register, &event));
+#endif /* CONFIG_SMP */
+}
+
+void __init
+xen_irq_init(void)
+{
+ struct callback_register event = {
+ .type = CALLBACKTYPE_event,
+ .address = { .ip = (unsigned long)&xen_event_callback },
+ };
+
+ xen_init_IRQ();
+ BUG_ON(HYPERVISOR_callback_op(CALLBACKOP_register, &event));
+ late_time_init = xen_bind_early_percpu_irq;
+}
+
+void
+xen_platform_send_ipi(int cpu, int vector, int delivery_mode, int redirect)
+{
+#ifdef CONFIG_SMP
+ /* TODO: we need to call vcpu_up here */
+ if (unlikely(vector == ap_wakeup_vector)) {
+ /* XXX
+ * This should be in __cpu_up(cpu) in ia64 smpboot.c
+ * like x86. But don't want to modify it,
+ * keep it untouched.
+ */
+ xen_smp_intr_init_early(cpu);
+
+ xen_send_ipi(cpu, vector);
+ /* vcpu_prepare_and_up(cpu); */
+ return;
+ }
+#endif
+
+ switch (vector) {
+ case IA64_IPI_VECTOR:
+ xen_send_IPI_one(cpu, XEN_IPI_VECTOR);
+ break;
+ case IA64_IPI_RESCHEDULE:
+ xen_send_IPI_one(cpu, XEN_RESCHEDULE_VECTOR);
+ break;
+ case IA64_CMCP_VECTOR:
+ xen_send_IPI_one(cpu, XEN_CMCP_VECTOR);
+ break;
+ case IA64_CPEP_VECTOR:
+ xen_send_IPI_one(cpu, XEN_CPEP_VECTOR);
+ break;
+ case IA64_TIMER_VECTOR: {
+ /* this is used only once by check_sal_cache_flush()
+ at boot time */
+ static int used = 0;
+ if (!used) {
+ xen_send_ipi(cpu, IA64_TIMER_VECTOR);
+ used = 1;
+ break;
+ }
+ /* fallthrough */
+ }
+ default:
+ printk(KERN_WARNING "Unsupported IPI type 0x%x\n",
+ vector);
+ notify_remote_via_irq(0); /* defaults to 0 irq */
+ break;
+ }
+}
+
+static void __init
+xen_register_ipi(void)
+{
+#ifdef CONFIG_SMP
+ register_percpu_irq(IA64_IPI_VECTOR, &xen_ipi_irqaction);
+ register_percpu_irq(IA64_IPI_RESCHEDULE, &xen_resched_irqaction);
+ register_percpu_irq(IA64_IPI_LOCAL_TLB_FLUSH, &xen_tlb_irqaction);
+#endif
+}
+
+static void
+xen_resend_irq(unsigned int vector)
+{
+ (void)resend_irq_on_evtchn(vector);
+}
+
+const struct pv_irq_ops xen_irq_ops __initdata = {
+ .register_ipi = xen_register_ipi,
+
+ .assign_irq_vector = xen_assign_irq_vector,
+ .free_irq_vector = xen_free_irq_vector,
+ .register_percpu_irq = xen_register_percpu_irq,
+
+ .resend_irq = xen_resend_irq,
+};
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/irq_xen.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef IRQ_XEN_H
+#define IRQ_XEN_H
+
+extern void (*late_time_init)(void);
+extern char xen_event_callback;
+void __init xen_init_IRQ(void);
+
+extern const struct pv_irq_ops xen_irq_ops __initdata;
+extern void xen_smp_intr_init(void);
+extern void xen_send_ipi(int cpu, int vec);
+
+#endif /* IRQ_XEN_H */
--- /dev/null
+#define MACHVEC_PLATFORM_NAME xen
+#define MACHVEC_PLATFORM_HEADER <asm/machvec_xen.h>
+#include <asm/machvec_init.h>
+
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/suspend.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * suspend/resume
+ */
+
+#include <xen/xen-ops.h>
+#include <asm/xen/hypervisor.h>
+#include "time.h"
+
+void
+xen_mm_pin_all(void)
+{
+ /* nothing */
+}
+
+void
+xen_mm_unpin_all(void)
+{
+ /* nothing */
+}
+
+void xen_pre_device_suspend(void)
+{
+ /* nothing */
+}
+
+void
+xen_pre_suspend()
+{
+ /* nothing */
+}
+
+void
+xen_post_suspend(int suspend_cancelled)
+{
+ if (suspend_cancelled)
+ return;
+
+ xen_ia64_enable_opt_feature();
+ /* add more if necessary */
+}
+
+void xen_arch_resume(void)
+{
+ xen_timer_resume_on_aps();
+}
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/time.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel_stat.h>
+#include <linux/posix-timers.h>
+#include <linux/irq.h>
+#include <linux/clocksource.h>
+
+#include <asm/timex.h>
+
+#include <asm/xen/hypervisor.h>
+
+#include <xen/interface/vcpu.h>
+
+#include "../kernel/fsyscall_gtod_data.h"
+
+DEFINE_PER_CPU(struct vcpu_runstate_info, runstate);
+DEFINE_PER_CPU(unsigned long, processed_stolen_time);
+DEFINE_PER_CPU(unsigned long, processed_blocked_time);
+
+/* taken from i386/kernel/time-xen.c */
+static void xen_init_missing_ticks_accounting(int cpu)
+{
+ struct vcpu_register_runstate_memory_area area;
+ struct vcpu_runstate_info *runstate = &per_cpu(runstate, cpu);
+ int rc;
+
+ memset(runstate, 0, sizeof(*runstate));
+
+ area.addr.v = runstate;
+ rc = HYPERVISOR_vcpu_op(VCPUOP_register_runstate_memory_area, cpu,
+ &area);
+ WARN_ON(rc && rc != -ENOSYS);
+
+ per_cpu(processed_blocked_time, cpu) = runstate->time[RUNSTATE_blocked];
+ per_cpu(processed_stolen_time, cpu) = runstate->time[RUNSTATE_runnable]
+ + runstate->time[RUNSTATE_offline];
+}
+
+/*
+ * Runstate accounting
+ */
+/* stolen from arch/x86/xen/time.c */
+static void get_runstate_snapshot(struct vcpu_runstate_info *res)
+{
+ u64 state_time;
+ struct vcpu_runstate_info *state;
+
+ BUG_ON(preemptible());
+
+ state = &__get_cpu_var(runstate);
+
+ /*
+ * The runstate info is always updated by the hypervisor on
+ * the current CPU, so there's no need to use anything
+ * stronger than a compiler barrier when fetching it.
+ */
+ do {
+ state_time = state->state_entry_time;
+ rmb();
+ *res = *state;
+ rmb();
+ } while (state->state_entry_time != state_time);
+}
+
+#define NS_PER_TICK (1000000000LL/HZ)
+
+static unsigned long
+consider_steal_time(unsigned long new_itm)
+{
+ unsigned long stolen, blocked;
+ unsigned long delta_itm = 0, stolentick = 0;
+ int cpu = smp_processor_id();
+ struct vcpu_runstate_info runstate;
+ struct task_struct *p = current;
+
+ get_runstate_snapshot(&runstate);
+
+ /*
+ * Check for vcpu migration effect
+ * In this case, itc value is reversed.
+ * This causes huge stolen value.
+ * This function just checks and reject this effect.
+ */
+ if (!time_after_eq(runstate.time[RUNSTATE_blocked],
+ per_cpu(processed_blocked_time, cpu)))
+ blocked = 0;
+
+ if (!time_after_eq(runstate.time[RUNSTATE_runnable] +
+ runstate.time[RUNSTATE_offline],
+ per_cpu(processed_stolen_time, cpu)))
+ stolen = 0;
+
+ if (!time_after(delta_itm + new_itm, ia64_get_itc()))
+ stolentick = ia64_get_itc() - new_itm;
+
+ do_div(stolentick, NS_PER_TICK);
+ stolentick++;
+
+ do_div(stolen, NS_PER_TICK);
+
+ if (stolen > stolentick)
+ stolen = stolentick;
+
+ stolentick -= stolen;
+ do_div(blocked, NS_PER_TICK);
+
+ if (blocked > stolentick)
+ blocked = stolentick;
+
+ if (stolen > 0 || blocked > 0) {
+ account_steal_time(NULL, jiffies_to_cputime(stolen));
+ account_steal_time(idle_task(cpu), jiffies_to_cputime(blocked));
+ run_local_timers();
+
+ if (rcu_pending(cpu))
+ rcu_check_callbacks(cpu, user_mode(get_irq_regs()));
+
+ scheduler_tick();
+ run_posix_cpu_timers(p);
+ delta_itm += local_cpu_data->itm_delta * (stolen + blocked);
+
+ if (cpu == time_keeper_id) {
+ write_seqlock(&xtime_lock);
+ do_timer(stolen + blocked);
+ local_cpu_data->itm_next = delta_itm + new_itm;
+ write_sequnlock(&xtime_lock);
+ } else {
+ local_cpu_data->itm_next = delta_itm + new_itm;
+ }
+ per_cpu(processed_stolen_time, cpu) += NS_PER_TICK * stolen;
+ per_cpu(processed_blocked_time, cpu) += NS_PER_TICK * blocked;
+ }
+ return delta_itm;
+}
+
+static int xen_do_steal_accounting(unsigned long *new_itm)
+{
+ unsigned long delta_itm;
+ delta_itm = consider_steal_time(*new_itm);
+ *new_itm += delta_itm;
+ if (time_after(*new_itm, ia64_get_itc()) && delta_itm)
+ return 1;
+
+ return 0;
+}
+
+static void xen_itc_jitter_data_reset(void)
+{
+ u64 lcycle, ret;
+
+ do {
+ lcycle = itc_jitter_data.itc_lastcycle;
+ ret = cmpxchg(&itc_jitter_data.itc_lastcycle, lcycle, 0);
+ } while (unlikely(ret != lcycle));
+}
+
+struct pv_time_ops xen_time_ops __initdata = {
+ .init_missing_ticks_accounting = xen_init_missing_ticks_accounting,
+ .do_steal_accounting = xen_do_steal_accounting,
+ .clocksource_resume = xen_itc_jitter_data_reset,
+};
+
+/* Called after suspend, to resume time. */
+static void xen_local_tick_resume(void)
+{
+ /* Just trigger a tick. */
+ ia64_cpu_local_tick();
+ touch_softlockup_watchdog();
+}
+
+void
+xen_timer_resume(void)
+{
+ unsigned int cpu;
+
+ xen_local_tick_resume();
+
+ for_each_online_cpu(cpu)
+ xen_init_missing_ticks_accounting(cpu);
+}
+
+static void ia64_cpu_local_tick_fn(void *unused)
+{
+ xen_local_tick_resume();
+ xen_init_missing_ticks_accounting(smp_processor_id());
+}
+
+void
+xen_timer_resume_on_aps(void)
+{
+ smp_call_function(&ia64_cpu_local_tick_fn, NULL, 1);
+}
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/time.h
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+extern struct pv_time_ops xen_time_ops __initdata;
+void xen_timer_resume_on_aps(void);
--- /dev/null
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * Tristan Gingold <tristan.gingold@bull.net>
+ *
+ * Copyright (c) 2007
+ * Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ * consolidate mini and inline version.
+ */
+
+#include <linux/module.h>
+#include <xen/interface/xen.h>
+#include <xen/interface/memory.h>
+#include <xen/interface/grant_table.h>
+#include <xen/interface/callback.h>
+#include <xen/interface/vcpu.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/xencomm.h>
+
+/* Xencomm notes:
+ * This file defines hypercalls to be used by xencomm. The hypercalls simply
+ * create inlines or mini descriptors for pointers and then call the raw arch
+ * hypercall xencomm_arch_hypercall_XXX
+ *
+ * If the arch wants to directly use these hypercalls, simply define macros
+ * in asm/xen/hypercall.h, eg:
+ * #define HYPERVISOR_sched_op xencomm_hypercall_sched_op
+ *
+ * The arch may also define HYPERVISOR_xxx as a function and do more operations
+ * before/after doing the hypercall.
+ *
+ * Note: because only inline or mini descriptors are created these functions
+ * must only be called with in kernel memory parameters.
+ */
+
+int
+xencomm_hypercall_console_io(int cmd, int count, char *str)
+{
+ /* xen early printk uses console io hypercall before
+ * xencomm initialization. In that case, we just ignore it.
+ */
+ if (!xencomm_is_initialized())
+ return 0;
+
+ return xencomm_arch_hypercall_console_io
+ (cmd, count, xencomm_map_no_alloc(str, count));
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_console_io);
+
+int
+xencomm_hypercall_event_channel_op(int cmd, void *op)
+{
+ struct xencomm_handle *desc;
+ desc = xencomm_map_no_alloc(op, sizeof(struct evtchn_op));
+ if (desc == NULL)
+ return -EINVAL;
+
+ return xencomm_arch_hypercall_event_channel_op(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_event_channel_op);
+
+int
+xencomm_hypercall_xen_version(int cmd, void *arg)
+{
+ struct xencomm_handle *desc;
+ unsigned int argsize;
+
+ switch (cmd) {
+ case XENVER_version:
+ /* do not actually pass an argument */
+ return xencomm_arch_hypercall_xen_version(cmd, 0);
+ case XENVER_extraversion:
+ argsize = sizeof(struct xen_extraversion);
+ break;
+ case XENVER_compile_info:
+ argsize = sizeof(struct xen_compile_info);
+ break;
+ case XENVER_capabilities:
+ argsize = sizeof(struct xen_capabilities_info);
+ break;
+ case XENVER_changeset:
+ argsize = sizeof(struct xen_changeset_info);
+ break;
+ case XENVER_platform_parameters:
+ argsize = sizeof(struct xen_platform_parameters);
+ break;
+ case XENVER_get_features:
+ argsize = (arg == NULL) ? 0 : sizeof(struct xen_feature_info);
+ break;
+
+ default:
+ printk(KERN_DEBUG
+ "%s: unknown version op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ desc = xencomm_map_no_alloc(arg, argsize);
+ if (desc == NULL)
+ return -EINVAL;
+
+ return xencomm_arch_hypercall_xen_version(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_xen_version);
+
+int
+xencomm_hypercall_physdev_op(int cmd, void *op)
+{
+ unsigned int argsize;
+
+ switch (cmd) {
+ case PHYSDEVOP_apic_read:
+ case PHYSDEVOP_apic_write:
+ argsize = sizeof(struct physdev_apic);
+ break;
+ case PHYSDEVOP_alloc_irq_vector:
+ case PHYSDEVOP_free_irq_vector:
+ argsize = sizeof(struct physdev_irq);
+ break;
+ case PHYSDEVOP_irq_status_query:
+ argsize = sizeof(struct physdev_irq_status_query);
+ break;
+
+ default:
+ printk(KERN_DEBUG
+ "%s: unknown physdev op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ return xencomm_arch_hypercall_physdev_op
+ (cmd, xencomm_map_no_alloc(op, argsize));
+}
+
+static int
+xencommize_grant_table_op(struct xencomm_mini **xc_area,
+ unsigned int cmd, void *op, unsigned int count,
+ struct xencomm_handle **desc)
+{
+ struct xencomm_handle *desc1;
+ unsigned int argsize;
+
+ switch (cmd) {
+ case GNTTABOP_map_grant_ref:
+ argsize = sizeof(struct gnttab_map_grant_ref);
+ break;
+ case GNTTABOP_unmap_grant_ref:
+ argsize = sizeof(struct gnttab_unmap_grant_ref);
+ break;
+ case GNTTABOP_setup_table:
+ {
+ struct gnttab_setup_table *setup = op;
+
+ argsize = sizeof(*setup);
+
+ if (count != 1)
+ return -EINVAL;
+ desc1 = __xencomm_map_no_alloc
+ (xen_guest_handle(setup->frame_list),
+ setup->nr_frames *
+ sizeof(*xen_guest_handle(setup->frame_list)),
+ *xc_area);
+ if (desc1 == NULL)
+ return -EINVAL;
+ (*xc_area)++;
+ set_xen_guest_handle(setup->frame_list, (void *)desc1);
+ break;
+ }
+ case GNTTABOP_dump_table:
+ argsize = sizeof(struct gnttab_dump_table);
+ break;
+ case GNTTABOP_transfer:
+ argsize = sizeof(struct gnttab_transfer);
+ break;
+ case GNTTABOP_copy:
+ argsize = sizeof(struct gnttab_copy);
+ break;
+ case GNTTABOP_query_size:
+ argsize = sizeof(struct gnttab_query_size);
+ break;
+ default:
+ printk(KERN_DEBUG "%s: unknown hypercall grant table op %d\n",
+ __func__, cmd);
+ BUG();
+ }
+
+ *desc = __xencomm_map_no_alloc(op, count * argsize, *xc_area);
+ if (*desc == NULL)
+ return -EINVAL;
+ (*xc_area)++;
+
+ return 0;
+}
+
+int
+xencomm_hypercall_grant_table_op(unsigned int cmd, void *op,
+ unsigned int count)
+{
+ int rc;
+ struct xencomm_handle *desc;
+ XENCOMM_MINI_ALIGNED(xc_area, 2);
+
+ rc = xencommize_grant_table_op(&xc_area, cmd, op, count, &desc);
+ if (rc)
+ return rc;
+
+ return xencomm_arch_hypercall_grant_table_op(cmd, desc, count);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_grant_table_op);
+
+int
+xencomm_hypercall_sched_op(int cmd, void *arg)
+{
+ struct xencomm_handle *desc;
+ unsigned int argsize;
+
+ switch (cmd) {
+ case SCHEDOP_yield:
+ case SCHEDOP_block:
+ argsize = 0;
+ break;
+ case SCHEDOP_shutdown:
+ argsize = sizeof(struct sched_shutdown);
+ break;
+ case SCHEDOP_poll:
+ {
+ struct sched_poll *poll = arg;
+ struct xencomm_handle *ports;
+
+ argsize = sizeof(struct sched_poll);
+ ports = xencomm_map_no_alloc(xen_guest_handle(poll->ports),
+ sizeof(*xen_guest_handle(poll->ports)));
+
+ set_xen_guest_handle(poll->ports, (void *)ports);
+ break;
+ }
+ default:
+ printk(KERN_DEBUG "%s: unknown sched op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ desc = xencomm_map_no_alloc(arg, argsize);
+ if (desc == NULL)
+ return -EINVAL;
+
+ return xencomm_arch_hypercall_sched_op(cmd, desc);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_sched_op);
+
+int
+xencomm_hypercall_multicall(void *call_list, int nr_calls)
+{
+ int rc;
+ int i;
+ struct multicall_entry *mce;
+ struct xencomm_handle *desc;
+ XENCOMM_MINI_ALIGNED(xc_area, nr_calls * 2);
+
+ for (i = 0; i < nr_calls; i++) {
+ mce = (struct multicall_entry *)call_list + i;
+
+ switch (mce->op) {
+ case __HYPERVISOR_update_va_mapping:
+ case __HYPERVISOR_mmu_update:
+ /* No-op on ia64. */
+ break;
+ case __HYPERVISOR_grant_table_op:
+ rc = xencommize_grant_table_op
+ (&xc_area,
+ mce->args[0], (void *)mce->args[1],
+ mce->args[2], &desc);
+ if (rc)
+ return rc;
+ mce->args[1] = (unsigned long)desc;
+ break;
+ case __HYPERVISOR_memory_op:
+ default:
+ printk(KERN_DEBUG
+ "%s: unhandled multicall op entry op %lu\n",
+ __func__, mce->op);
+ return -ENOSYS;
+ }
+ }
+
+ desc = xencomm_map_no_alloc(call_list,
+ nr_calls * sizeof(struct multicall_entry));
+ if (desc == NULL)
+ return -EINVAL;
+
+ return xencomm_arch_hypercall_multicall(desc, nr_calls);
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_multicall);
+
+int
+xencomm_hypercall_callback_op(int cmd, void *arg)
+{
+ unsigned int argsize;
+ switch (cmd) {
+ case CALLBACKOP_register:
+ argsize = sizeof(struct callback_register);
+ break;
+ case CALLBACKOP_unregister:
+ argsize = sizeof(struct callback_unregister);
+ break;
+ default:
+ printk(KERN_DEBUG
+ "%s: unknown callback op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ return xencomm_arch_hypercall_callback_op
+ (cmd, xencomm_map_no_alloc(arg, argsize));
+}
+
+static int
+xencommize_memory_reservation(struct xencomm_mini *xc_area,
+ struct xen_memory_reservation *mop)
+{
+ struct xencomm_handle *desc;
+
+ desc = __xencomm_map_no_alloc(xen_guest_handle(mop->extent_start),
+ mop->nr_extents *
+ sizeof(*xen_guest_handle(mop->extent_start)),
+ xc_area);
+ if (desc == NULL)
+ return -EINVAL;
+
+ set_xen_guest_handle(mop->extent_start, (void *)desc);
+ return 0;
+}
+
+int
+xencomm_hypercall_memory_op(unsigned int cmd, void *arg)
+{
+ GUEST_HANDLE(xen_pfn_t) extent_start_va[2] = { {NULL}, {NULL} };
+ struct xen_memory_reservation *xmr = NULL;
+ int rc;
+ struct xencomm_handle *desc;
+ unsigned int argsize;
+ XENCOMM_MINI_ALIGNED(xc_area, 2);
+
+ switch (cmd) {
+ case XENMEM_increase_reservation:
+ case XENMEM_decrease_reservation:
+ case XENMEM_populate_physmap:
+ xmr = (struct xen_memory_reservation *)arg;
+ set_xen_guest_handle(extent_start_va[0],
+ xen_guest_handle(xmr->extent_start));
+
+ argsize = sizeof(*xmr);
+ rc = xencommize_memory_reservation(xc_area, xmr);
+ if (rc)
+ return rc;
+ xc_area++;
+ break;
+
+ case XENMEM_maximum_ram_page:
+ argsize = 0;
+ break;
+
+ case XENMEM_add_to_physmap:
+ argsize = sizeof(struct xen_add_to_physmap);
+ break;
+
+ default:
+ printk(KERN_DEBUG "%s: unknown memory op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ desc = xencomm_map_no_alloc(arg, argsize);
+ if (desc == NULL)
+ return -EINVAL;
+
+ rc = xencomm_arch_hypercall_memory_op(cmd, desc);
+
+ switch (cmd) {
+ case XENMEM_increase_reservation:
+ case XENMEM_decrease_reservation:
+ case XENMEM_populate_physmap:
+ set_xen_guest_handle(xmr->extent_start,
+ xen_guest_handle(extent_start_va[0]));
+ break;
+ }
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(xencomm_hypercall_memory_op);
+
+int
+xencomm_hypercall_suspend(unsigned long srec)
+{
+ struct sched_shutdown arg;
+
+ arg.reason = SHUTDOWN_suspend;
+
+ return xencomm_arch_hypercall_sched_op(
+ SCHEDOP_shutdown, xencomm_map_no_alloc(&arg, sizeof(arg)));
+}
+
+long
+xencomm_hypercall_vcpu_op(int cmd, int cpu, void *arg)
+{
+ unsigned int argsize;
+ switch (cmd) {
+ case VCPUOP_register_runstate_memory_area: {
+ struct vcpu_register_runstate_memory_area *area =
+ (struct vcpu_register_runstate_memory_area *)arg;
+ argsize = sizeof(*arg);
+ set_xen_guest_handle(area->addr.h,
+ (void *)xencomm_map_no_alloc(area->addr.v,
+ sizeof(area->addr.v)));
+ break;
+ }
+
+ default:
+ printk(KERN_DEBUG "%s: unknown vcpu op %d\n", __func__, cmd);
+ return -ENOSYS;
+ }
+
+ return xencomm_arch_hypercall_vcpu_op(cmd, cpu,
+ xencomm_map_no_alloc(arg, argsize));
+}
+
+long
+xencomm_hypercall_opt_feature(void *arg)
+{
+ return xencomm_arch_hypercall_opt_feature(
+ xencomm_map_no_alloc(arg,
+ sizeof(struct xen_ia64_opt_feature)));
+}
--- /dev/null
+/******************************************************************************
+ * arch/ia64/xen/xen_pv_ops.c
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/console.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/pm.h>
+
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/xencomm.h>
+#include <asm/xen/privop.h>
+
+#include "irq_xen.h"
+#include "time.h"
+
+/***************************************************************************
+ * general info
+ */
+static struct pv_info xen_info __initdata = {
+ .kernel_rpl = 2, /* or 1: determin at runtime */
+ .paravirt_enabled = 1,
+ .name = "Xen/ia64",
+};
+
+#define IA64_RSC_PL_SHIFT 2
+#define IA64_RSC_PL_BIT_SIZE 2
+#define IA64_RSC_PL_MASK \
+ (((1UL << IA64_RSC_PL_BIT_SIZE) - 1) << IA64_RSC_PL_SHIFT)
+
+static void __init
+xen_info_init(void)
+{
+ /* Xenified Linux/ia64 may run on pl = 1 or 2.
+ * determin at run time. */
+ unsigned long rsc = ia64_getreg(_IA64_REG_AR_RSC);
+ unsigned int rpl = (rsc & IA64_RSC_PL_MASK) >> IA64_RSC_PL_SHIFT;
+ xen_info.kernel_rpl = rpl;
+}
+
+/***************************************************************************
+ * pv_init_ops
+ * initialization hooks.
+ */
+
+static void
+xen_panic_hypercall(struct unw_frame_info *info, void *arg)
+{
+ current->thread.ksp = (__u64)info->sw - 16;
+ HYPERVISOR_shutdown(SHUTDOWN_crash);
+ /* we're never actually going to get here... */
+}
+
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ unw_init_running(xen_panic_hypercall, NULL);
+ /* we're never actually going to get here... */
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block xen_panic_block = {
+ xen_panic_event, NULL, 0 /* try to go last */
+};
+
+static void xen_pm_power_off(void)
+{
+ local_irq_disable();
+ HYPERVISOR_shutdown(SHUTDOWN_poweroff);
+}
+
+static void __init
+xen_banner(void)
+{
+ printk(KERN_INFO
+ "Running on Xen! pl = %d start_info_pfn=0x%lx nr_pages=%ld "
+ "flags=0x%x\n",
+ xen_info.kernel_rpl,
+ HYPERVISOR_shared_info->arch.start_info_pfn,
+ xen_start_info->nr_pages, xen_start_info->flags);
+}
+
+static int __init
+xen_reserve_memory(struct rsvd_region *region)
+{
+ region->start = (unsigned long)__va(
+ (HYPERVISOR_shared_info->arch.start_info_pfn << PAGE_SHIFT));
+ region->end = region->start + PAGE_SIZE;
+ return 1;
+}
+
+static void __init
+xen_arch_setup_early(void)
+{
+ struct shared_info *s;
+ BUG_ON(!xen_pv_domain());
+
+ s = HYPERVISOR_shared_info;
+ xen_start_info = __va(s->arch.start_info_pfn << PAGE_SHIFT);
+
+ /* Must be done before any hypercall. */
+ xencomm_initialize();
+
+ xen_setup_features();
+ /* Register a call for panic conditions. */
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &xen_panic_block);
+ pm_power_off = xen_pm_power_off;
+
+ xen_ia64_enable_opt_feature();
+}
+
+static void __init
+xen_arch_setup_console(char **cmdline_p)
+{
+ add_preferred_console("xenboot", 0, NULL);
+ add_preferred_console("tty", 0, NULL);
+ /* use hvc_xen */
+ add_preferred_console("hvc", 0, NULL);
+
+#if !defined(CONFIG_VT) || !defined(CONFIG_DUMMY_CONSOLE)
+ conswitchp = NULL;
+#endif
+}
+
+static int __init
+xen_arch_setup_nomca(void)
+{
+ return 1;
+}
+
+static void __init
+xen_post_smp_prepare_boot_cpu(void)
+{
+ xen_setup_vcpu_info_placement();
+}
+
+static const struct pv_init_ops xen_init_ops __initdata = {
+ .banner = xen_banner,
+
+ .reserve_memory = xen_reserve_memory,
+
+ .arch_setup_early = xen_arch_setup_early,
+ .arch_setup_console = xen_arch_setup_console,
+ .arch_setup_nomca = xen_arch_setup_nomca,
+
+ .post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
+};
+
+/***************************************************************************
+ * pv_cpu_ops
+ * intrinsics hooks.
+ */
+
+static void xen_setreg(int regnum, unsigned long val)
+{
+ switch (regnum) {
+ case _IA64_REG_AR_KR0 ... _IA64_REG_AR_KR7:
+ xen_set_kr(regnum - _IA64_REG_AR_KR0, val);
+ break;
+#ifdef CONFIG_IA32_SUPPORT
+ case _IA64_REG_AR_EFLAG:
+ xen_set_eflag(val);
+ break;
+#endif
+ case _IA64_REG_CR_TPR:
+ xen_set_tpr(val);
+ break;
+ case _IA64_REG_CR_ITM:
+ xen_set_itm(val);
+ break;
+ case _IA64_REG_CR_EOI:
+ xen_eoi(val);
+ break;
+ default:
+ ia64_native_setreg_func(regnum, val);
+ break;
+ }
+}
+
+static unsigned long xen_getreg(int regnum)
+{
+ unsigned long res;
+
+ switch (regnum) {
+ case _IA64_REG_PSR:
+ res = xen_get_psr();
+ break;
+#ifdef CONFIG_IA32_SUPPORT
+ case _IA64_REG_AR_EFLAG:
+ res = xen_get_eflag();
+ break;
+#endif
+ case _IA64_REG_CR_IVR:
+ res = xen_get_ivr();
+ break;
+ case _IA64_REG_CR_TPR:
+ res = xen_get_tpr();
+ break;
+ default:
+ res = ia64_native_getreg_func(regnum);
+ break;
+ }
+ return res;
+}
+
+/* turning on interrupts is a bit more complicated.. write to the
+ * memory-mapped virtual psr.i bit first (to avoid race condition),
+ * then if any interrupts were pending, we have to execute a hyperprivop
+ * to ensure the pending interrupt gets delivered; else we're done! */
+static void
+xen_ssm_i(void)
+{
+ int old = xen_get_virtual_psr_i();
+ xen_set_virtual_psr_i(1);
+ barrier();
+ if (!old && xen_get_virtual_pend())
+ xen_hyper_ssm_i();
+}
+
+/* turning off interrupts can be paravirtualized simply by writing
+ * to a memory-mapped virtual psr.i bit (implemented as a 16-bit bool) */
+static void
+xen_rsm_i(void)
+{
+ xen_set_virtual_psr_i(0);
+ barrier();
+}
+
+static unsigned long
+xen_get_psr_i(void)
+{
+ return xen_get_virtual_psr_i() ? IA64_PSR_I : 0;
+}
+
+static void
+xen_intrin_local_irq_restore(unsigned long mask)
+{
+ if (mask & IA64_PSR_I)
+ xen_ssm_i();
+ else
+ xen_rsm_i();
+}
+
+static const struct pv_cpu_ops xen_cpu_ops __initdata = {
+ .fc = xen_fc,
+ .thash = xen_thash,
+ .get_cpuid = xen_get_cpuid,
+ .get_pmd = xen_get_pmd,
+ .getreg = xen_getreg,
+ .setreg = xen_setreg,
+ .ptcga = xen_ptcga,
+ .get_rr = xen_get_rr,
+ .set_rr = xen_set_rr,
+ .set_rr0_to_rr4 = xen_set_rr0_to_rr4,
+ .ssm_i = xen_ssm_i,
+ .rsm_i = xen_rsm_i,
+ .get_psr_i = xen_get_psr_i,
+ .intrin_local_irq_restore
+ = xen_intrin_local_irq_restore,
+};
+
+/******************************************************************************
+ * replacement of hand written assembly codes.
+ */
+
+extern char xen_switch_to;
+extern char xen_leave_syscall;
+extern char xen_work_processed_syscall;
+extern char xen_leave_kernel;
+
+const struct pv_cpu_asm_switch xen_cpu_asm_switch = {
+ .switch_to = (unsigned long)&xen_switch_to,
+ .leave_syscall = (unsigned long)&xen_leave_syscall,
+ .work_processed_syscall = (unsigned long)&xen_work_processed_syscall,
+ .leave_kernel = (unsigned long)&xen_leave_kernel,
+};
+
+/***************************************************************************
+ * pv_iosapic_ops
+ * iosapic read/write hooks.
+ */
+static void
+xen_pcat_compat_init(void)
+{
+ /* nothing */
+}
+
+static struct irq_chip*
+xen_iosapic_get_irq_chip(unsigned long trigger)
+{
+ return NULL;
+}
+
+static unsigned int
+xen_iosapic_read(char __iomem *iosapic, unsigned int reg)
+{
+ struct physdev_apic apic_op;
+ int ret;
+
+ apic_op.apic_physbase = (unsigned long)iosapic -
+ __IA64_UNCACHED_OFFSET;
+ apic_op.reg = reg;
+ ret = HYPERVISOR_physdev_op(PHYSDEVOP_apic_read, &apic_op);
+ if (ret)
+ return ret;
+ return apic_op.value;
+}
+
+static void
+xen_iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
+{
+ struct physdev_apic apic_op;
+
+ apic_op.apic_physbase = (unsigned long)iosapic -
+ __IA64_UNCACHED_OFFSET;
+ apic_op.reg = reg;
+ apic_op.value = val;
+ HYPERVISOR_physdev_op(PHYSDEVOP_apic_write, &apic_op);
+}
+
+static const struct pv_iosapic_ops xen_iosapic_ops __initdata = {
+ .pcat_compat_init = xen_pcat_compat_init,
+ .__get_irq_chip = xen_iosapic_get_irq_chip,
+
+ .__read = xen_iosapic_read,
+ .__write = xen_iosapic_write,
+};
+
+/***************************************************************************
+ * pv_ops initialization
+ */
+
+void __init
+xen_setup_pv_ops(void)
+{
+ xen_info_init();
+ pv_info = xen_info;
+ pv_init_ops = xen_init_ops;
+ pv_cpu_ops = xen_cpu_ops;
+ pv_iosapic_ops = xen_iosapic_ops;
+ pv_irq_ops = xen_irq_ops;
+ pv_time_ops = xen_time_ops;
+
+ paravirt_cpu_asm_init(&xen_cpu_asm_switch);
+}
--- /dev/null
+/*
+ * Copyright (C) 2006 Hollis Blanchard <hollisb@us.ibm.com>, IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/mm.h>
+
+static unsigned long kernel_virtual_offset;
+static int is_xencomm_initialized;
+
+/* for xen early printk. It uses console io hypercall which uses xencomm.
+ * However early printk may use it before xencomm initialization.
+ */
+int
+xencomm_is_initialized(void)
+{
+ return is_xencomm_initialized;
+}
+
+void
+xencomm_initialize(void)
+{
+ kernel_virtual_offset = KERNEL_START - ia64_tpa(KERNEL_START);
+ is_xencomm_initialized = 1;
+}
+
+/* Translate virtual address to physical address. */
+unsigned long
+xencomm_vtop(unsigned long vaddr)
+{
+ struct page *page;
+ struct vm_area_struct *vma;
+
+ if (vaddr == 0)
+ return 0UL;
+
+ if (REGION_NUMBER(vaddr) == 5) {
+ pgd_t *pgd;
+ pud_t *pud;
+ pmd_t *pmd;
+ pte_t *ptep;
+
+ /* On ia64, TASK_SIZE refers to current. It is not initialized
+ during boot.
+ Furthermore the kernel is relocatable and __pa() doesn't
+ work on addresses. */
+ if (vaddr >= KERNEL_START
+ && vaddr < (KERNEL_START + KERNEL_TR_PAGE_SIZE))
+ return vaddr - kernel_virtual_offset;
+
+ /* In kernel area -- virtually mapped. */
+ pgd = pgd_offset_k(vaddr);
+ if (pgd_none(*pgd) || pgd_bad(*pgd))
+ return ~0UL;
+
+ pud = pud_offset(pgd, vaddr);
+ if (pud_none(*pud) || pud_bad(*pud))
+ return ~0UL;
+
+ pmd = pmd_offset(pud, vaddr);
+ if (pmd_none(*pmd) || pmd_bad(*pmd))
+ return ~0UL;
+
+ ptep = pte_offset_kernel(pmd, vaddr);
+ if (!ptep)
+ return ~0UL;
+
+ return (pte_val(*ptep) & _PFN_MASK) | (vaddr & ~PAGE_MASK);
+ }
+
+ if (vaddr > TASK_SIZE) {
+ /* percpu variables */
+ if (REGION_NUMBER(vaddr) == 7 &&
+ REGION_OFFSET(vaddr) >= (1ULL << IA64_MAX_PHYS_BITS))
+ ia64_tpa(vaddr);
+
+ /* kernel address */
+ return __pa(vaddr);
+ }
+
+ /* XXX double-check (lack of) locking */
+ vma = find_extend_vma(current->mm, vaddr);
+ if (!vma)
+ return ~0UL;
+
+ /* We assume the page is modified. */
+ page = follow_page(vma, vaddr, FOLL_WRITE | FOLL_TOUCH);
+ if (!page)
+ return ~0UL;
+
+ return (page_to_pfn(page) << PAGE_SHIFT) | (vaddr & ~PAGE_MASK);
+}
--- /dev/null
+/*
+ * arch/ia64/xen/ivt.S
+ *
+ * Copyright (C) 2005 Hewlett-Packard Co
+ * Dan Magenheimer <dan.magenheimer@hp.com>
+ *
+ * Copyright (c) 2008 Isaku Yamahata <yamahata at valinux co jp>
+ * VA Linux Systems Japan K.K.
+ * pv_ops.
+ */
+
+#include <asm/asmmacro.h>
+#include <asm/kregs.h>
+#include <asm/pgtable.h>
+
+#include "../kernel/minstate.h"
+
+ .section .text,"ax"
+GLOBAL_ENTRY(xen_event_callback)
+ mov r31=pr // prepare to save predicates
+ ;;
+ SAVE_MIN_WITH_COVER // uses r31; defines r2 and r3
+ ;;
+ movl r3=XSI_PSR_IC
+ mov r14=1
+ ;;
+ st4 [r3]=r14
+ ;;
+ adds r3=8,r2 // set up second base pointer for SAVE_REST
+ srlz.i // ensure everybody knows psr.ic is back on
+ ;;
+ SAVE_REST
+ ;;
+1:
+ alloc r14=ar.pfs,0,0,1,0 // must be first in an insn group
+ add out0=16,sp // pass pointer to pt_regs as first arg
+ ;;
+ br.call.sptk.many b0=xen_evtchn_do_upcall
+ ;;
+ movl r20=XSI_PSR_I_ADDR
+ ;;
+ ld8 r20=[r20]
+ ;;
+ adds r20=-1,r20 // vcpu_info->evtchn_upcall_pending
+ ;;
+ ld1 r20=[r20]
+ ;;
+ cmp.ne p6,p0=r20,r0 // if there are pending events,
+ (p6) br.spnt.few 1b // call evtchn_do_upcall again.
+ br.sptk.many xen_leave_kernel // we know ia64_leave_kernel is
+ // paravirtualized as xen_leave_kernel
+END(xen_event_callback)
--- /dev/null
+/*
+ * Support routines for Xen
+ *
+ * Copyright (C) 2005 Dan Magenheimer <dan.magenheimer@hp.com>
+ */
+
+#include <asm/processor.h>
+#include <asm/asmmacro.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/paravirt.h>
+#include <asm/xen/privop.h>
+#include <linux/elfnote.h>
+#include <linux/init.h>
+#include <xen/interface/elfnote.h>
+
+ .section .data.read_mostly
+ .align 8
+ .global xen_domain_type
+xen_domain_type:
+ data4 XEN_NATIVE_ASM
+ .previous
+
+ __INIT
+ENTRY(startup_xen)
+ // Calculate load offset.
+ // The constant, LOAD_OFFSET, can't be used because the boot
+ // loader doesn't always load to the LMA specified by the vmlinux.lds.
+ mov r9=ip // must be the first instruction to make sure
+ // that r9 = the physical address of startup_xen.
+ // Usually r9 = startup_xen - LOAD_OFFSET
+ movl r8=startup_xen
+ ;;
+ sub r9=r9,r8 // Usually r9 = -LOAD_OFFSET.
+
+ mov r10=PARAVIRT_HYPERVISOR_TYPE_XEN
+ movl r11=_start
+ ;;
+ add r11=r11,r9
+ movl r8=hypervisor_type
+ ;;
+ add r8=r8,r9
+ mov b0=r11
+ ;;
+ st8 [r8]=r10
+ br.cond.sptk.many b0
+ ;;
+END(startup_xen)
+
+ ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz "linux")
+ ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz "2.6")
+ ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz "xen-3.0")
+ ELFNOTE(Xen, XEN_ELFNOTE_ENTRY, data8.ua startup_xen - LOAD_OFFSET)
+
+#define isBP p3 // are we the Bootstrap Processor?
+
+ .text
+
+GLOBAL_ENTRY(xen_setup_hook)
+ mov r8=XEN_PV_DOMAIN_ASM
+(isBP) movl r9=xen_domain_type;;
+(isBP) st4 [r9]=r8
+ movl r10=xen_ivt;;
+
+ mov cr.iva=r10
+
+ /* Set xsi base. */
+#define FW_HYPERCALL_SET_SHARED_INFO_VA 0x600
+(isBP) mov r2=FW_HYPERCALL_SET_SHARED_INFO_VA
+(isBP) movl r28=XSI_BASE;;
+(isBP) break 0x1000;;
+
+ /* setup pv_ops */
+(isBP) mov r4=rp
+ ;;
+(isBP) br.call.sptk.many rp=xen_setup_pv_ops
+ ;;
+(isBP) mov rp=r4
+ ;;
+
+ br.ret.sptk.many rp
+ ;;
+END(xen_setup_hook)
default 64 if PPC64
default 32 if !PPC64
-config PPC_MERGE
- def_bool y
-
config ARCH_PHYS_ADDR_T_64BIT
def_bool PPC64 || PHYS_64BIT
config CRASH_DUMP
bool "Build a kdump crash kernel"
- depends on PPC_MULTIPLATFORM && PPC64
+ depends on PPC_MULTIPLATFORM && PPC64 && RELOCATABLE
help
Build a kernel suitable for use as a kdump capture kernel.
- The kernel will be linked at a different address than normal, and
- so can only be used for Kdump.
-
- Don't change this unless you know what you are doing.
+ The same kernel binary can be used as production kernel and dump
+ capture kernel.
config PHYP_DUMP
bool "Hypervisor-assisted dump (EXPERIMENTAL)"
default "0xc000000000000000"
config KERNEL_START
hex
- default "0xc000000002000000" if CRASH_DUMP
default "0xc000000000000000"
config PHYSICAL_START
hex
- default "0x02000000" if CRASH_DUMP
default "0x00000000"
endif
fixed-head.S ep88xc.c ep405.c cuboot-c2k.c \
cuboot-katmai.c cuboot-rainier.c redboot-8xx.c ep8248e.c \
cuboot-warp.c cuboot-85xx-cpm2.c cuboot-yosemite.c simpleboot.c \
- virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c
+ virtex405-head.S virtex.c redboot-83xx.c cuboot-sam440ep.c \
+ cuboot-acadia.c
src-boot := $(src-wlib) $(src-plat) empty.c
src-boot := $(addprefix $(obj)/, $(src-boot))
# Board ports in arch/powerpc/platform/40x/Kconfig
image-$(CONFIG_EP405) += dtbImage.ep405
image-$(CONFIG_WALNUT) += treeImage.walnut
+image-$(CONFIG_ACADIA) += cuImage.acadia
# Board ports in arch/powerpc/platform/44x/Kconfig
image-$(CONFIG_EBONY) += treeImage.ebony cuImage.ebony
$(obj)/uImage: vmlinux $(wrapperbits)
$(call if_changed,wrap,uboot)
+$(obj)/cuImage.initrd.%: vmlinux $(obj)/%.dtb $(wrapperbits)
+ $(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb,$(obj)/ramdisk.image.gz)
+
$(obj)/cuImage.%: vmlinux $(obj)/%.dtb $(wrapperbits)
$(call if_changed,wrap,cuboot-$*,,$(obj)/$*.dtb)
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*
- * Usage: addnote zImage [note.elf]
+ * Usage: addnote [-r realbase] zImage [note.elf]
*
* If note.elf is supplied, it is the name of an ELF file that contains
* an RPA note to use instead of the built-in one. Alternatively, the
int
main(int ac, char **av)
{
- int fd, n, i;
+ int fd, n, i, ai;
int ph, ps, np;
int nnote, nnote2, ns;
unsigned char *rpap;
-
- if (ac != 2 && ac != 3) {
- fprintf(stderr, "Usage: %s elf-file [rpanote.elf]\n", av[0]);
+ char *p, *endp;
+
+ ai = 1;
+ if (ac >= ai + 2 && strcmp(av[ai], "-r") == 0) {
+ /* process -r realbase */
+ p = av[ai + 1];
+ descr[1] = strtol(p, &endp, 16);
+ if (endp == p || *endp != 0) {
+ fprintf(stderr, "Can't parse -r argument '%s' as hex\n",
+ p);
+ exit(1);
+ }
+ ai += 2;
+ }
+ if (ac != ai + 1 && ac != ai + 2) {
+ fprintf(stderr, "Usage: %s [-r realbase] elf-file [rpanote.elf]\n", av[0]);
exit(1);
}
- fd = open(av[1], O_RDWR);
+ fd = open(av[ai], O_RDWR);
if (fd < 0) {
- perror(av[1]);
+ perror(av[ai]);
exit(1);
}
if (buf[E_IDENT+EI_CLASS] != ELFCLASS32
|| buf[E_IDENT+EI_DATA] != ELFDATA2MSB) {
fprintf(stderr, "%s is not a big-endian 32-bit ELF image\n",
- av[1]);
+ av[ai]);
exit(1);
}
- if (ac == 3)
- rpap = read_rpanote(av[2], &nnote2);
+ if (ac == ai + 2)
+ rpap = read_rpanote(av[ai + 1], &nnote2);
ph = GET_32BE(buf, E_PHOFF);
ps = GET_16BE(buf, E_PHENTSIZE);
for (i = 0; i < np; ++i) {
if (GET_32BE(buf, ph + PH_TYPE) == PT_NOTE) {
fprintf(stderr, "%s already has a note entry\n",
- av[1]);
+ av[ai]);
exit(0);
}
ph += ps;
exit(1);
}
if (i < n) {
- fprintf(stderr, "%s: write truncated\n", av[1]);
+ fprintf(stderr, "%s: write truncated\n", av[ai]);
exit(1);
}
exit(0);
notelf:
- fprintf(stderr, "%s does not appear to be an ELF file\n", av[1]);
+ fprintf(stderr, "%s does not appear to be an ELF file\n", av[ai]);
exit(1);
nospace:
fprintf(stderr, "sorry, I can't find space in %s to put the note\n",
- av[1]);
+ av[ai]);
exit(1);
}
* this can do a simple path lookup.
*/
soc = find_node_by_devtype(NULL, "soc");
+ if (!soc)
+ soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
+ if (!soc)
+ soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
if (soc) {
setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
sizeof(bd.bi_ipbfreq));
--- /dev/null
+/*
+ * Old U-boot compatibility for Acadia
+ *
+ * Author: Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * Copyright 2008 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#include "ops.h"
+#include "io.h"
+#include "dcr.h"
+#include "stdio.h"
+#include "4xx.h"
+#include "44x.h"
+#include "cuboot.h"
+
+#define TARGET_4xx
+#include "ppcboot.h"
+
+static bd_t bd;
+
+#define CPR_PERD0_SPIDV_MASK 0x000F0000 /* SPI Clock Divider */
+
+#define PLLC_SRC_MASK 0x20000000 /* PLL feedback source */
+
+#define PLLD_FBDV_MASK 0x1F000000 /* PLL feedback divider value */
+#define PLLD_FWDVA_MASK 0x000F0000 /* PLL forward divider A value */
+#define PLLD_FWDVB_MASK 0x00000700 /* PLL forward divider B value */
+
+#define PRIMAD_CPUDV_MASK 0x0F000000 /* CPU Clock Divisor Mask */
+#define PRIMAD_PLBDV_MASK 0x000F0000 /* PLB Clock Divisor Mask */
+#define PRIMAD_OPBDV_MASK 0x00000F00 /* OPB Clock Divisor Mask */
+#define PRIMAD_EBCDV_MASK 0x0000000F /* EBC Clock Divisor Mask */
+
+#define PERD0_PWMDV_MASK 0xFF000000 /* PWM Divider Mask */
+#define PERD0_SPIDV_MASK 0x000F0000 /* SPI Divider Mask */
+#define PERD0_U0DV_MASK 0x0000FF00 /* UART 0 Divider Mask */
+#define PERD0_U1DV_MASK 0x000000FF /* UART 1 Divider Mask */
+
+static void get_clocks(void)
+{
+ unsigned long sysclk, cpr_plld, cpr_pllc, cpr_primad, plloutb, i;
+ unsigned long pllFwdDiv, pllFwdDivB, pllFbkDiv, pllPlbDiv, pllExtBusDiv;
+ unsigned long pllOpbDiv, freqEBC, freqUART, freqOPB;
+ unsigned long div; /* total divisor udiv * bdiv */
+ unsigned long umin; /* minimum udiv */
+ unsigned short diff; /* smallest diff */
+ unsigned long udiv; /* best udiv */
+ unsigned short idiff; /* current diff */
+ unsigned short ibdiv; /* current bdiv */
+ unsigned long est; /* current estimate */
+ unsigned long baud;
+ void *np;
+
+ /* read the sysclk value from the CPLD */
+ sysclk = (in_8((unsigned char *)0x80000000) == 0xc) ? 66666666 : 33333000;
+
+ /*
+ * Read PLL Mode registers
+ */
+ cpr_plld = CPR0_READ(DCRN_CPR0_PLLD);
+ cpr_pllc = CPR0_READ(DCRN_CPR0_PLLC);
+
+ /*
+ * Determine forward divider A
+ */
+ pllFwdDiv = ((cpr_plld & PLLD_FWDVA_MASK) >> 16);
+
+ /*
+ * Determine forward divider B
+ */
+ pllFwdDivB = ((cpr_plld & PLLD_FWDVB_MASK) >> 8);
+ if (pllFwdDivB == 0)
+ pllFwdDivB = 8;
+
+ /*
+ * Determine FBK_DIV.
+ */
+ pllFbkDiv = ((cpr_plld & PLLD_FBDV_MASK) >> 24);
+ if (pllFbkDiv == 0)
+ pllFbkDiv = 256;
+
+ /*
+ * Read CPR_PRIMAD register
+ */
+ cpr_primad = CPR0_READ(DCRN_CPR0_PRIMAD);
+
+ /*
+ * Determine PLB_DIV.
+ */
+ pllPlbDiv = ((cpr_primad & PRIMAD_PLBDV_MASK) >> 16);
+ if (pllPlbDiv == 0)
+ pllPlbDiv = 16;
+
+ /*
+ * Determine EXTBUS_DIV.
+ */
+ pllExtBusDiv = (cpr_primad & PRIMAD_EBCDV_MASK);
+ if (pllExtBusDiv == 0)
+ pllExtBusDiv = 16;
+
+ /*
+ * Determine OPB_DIV.
+ */
+ pllOpbDiv = ((cpr_primad & PRIMAD_OPBDV_MASK) >> 8);
+ if (pllOpbDiv == 0)
+ pllOpbDiv = 16;
+
+ /* There is a bug in U-Boot that prevents us from using
+ * bd.bi_opbfreq because U-Boot doesn't populate it for
+ * 405EZ. We get to calculate it, yay!
+ */
+ freqOPB = (sysclk *pllFbkDiv) /pllOpbDiv;
+
+ freqEBC = (sysclk * pllFbkDiv) / pllExtBusDiv;
+
+ plloutb = ((sysclk * ((cpr_pllc & PLLC_SRC_MASK) ?
+ pllFwdDivB : pllFwdDiv) *
+ pllFbkDiv) / pllFwdDivB);
+
+ np = find_node_by_alias("serial0");
+ if (getprop(np, "current-speed", &baud, sizeof(baud)) != sizeof(baud))
+ fatal("no current-speed property\n\r");
+
+ udiv = 256; /* Assume lowest possible serial clk */
+ div = plloutb / (16 * baud); /* total divisor */
+ umin = (plloutb / freqOPB) << 1; /* 2 x OPB divisor */
+ diff = 256; /* highest possible */
+
+ /* i is the test udiv value -- start with the largest
+ * possible (256) to minimize serial clock and constrain
+ * search to umin.
+ */
+ for (i = 256; i > umin; i--) {
+ ibdiv = div / i;
+ est = i * ibdiv;
+ idiff = (est > div) ? (est-div) : (div-est);
+ if (idiff == 0) {
+ udiv = i;
+ break; /* can't do better */
+ } else if (idiff < diff) {
+ udiv = i; /* best so far */
+ diff = idiff; /* update lowest diff*/
+ }
+ }
+ freqUART = plloutb / udiv;
+
+ dt_fixup_cpu_clocks(bd.bi_procfreq, bd.bi_intfreq, bd.bi_plb_busfreq);
+ dt_fixup_clock("/plb/ebc", freqEBC);
+ dt_fixup_clock("/plb/opb", freqOPB);
+ dt_fixup_clock("/plb/opb/serial@ef600300", freqUART);
+ dt_fixup_clock("/plb/opb/serial@ef600400", freqUART);
+}
+
+static void acadia_fixups(void)
+{
+ dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
+ get_clocks();
+ dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
+}
+
+void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+ unsigned long r6, unsigned long r7)
+{
+ CUBOOT_INIT();
+ platform_ops.fixups = acadia_fixups;
+ platform_ops.exit = ibm40x_dbcr_reset;
+ fdt_init(_dtb_start);
+ serial_console_init();
+}
--- /dev/null
+/*
+ * Device Tree Source for AMCC Acadia (405EZ)
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/dts-v1/;
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ model = "amcc,acadia";
+ compatible = "amcc,acadia";
+ dcr-parent = <&{/cpus/cpu@0}>;
+
+ aliases {
+ ethernet0 = &EMAC0;
+ serial0 = &UART0;
+ serial1 = &UART1;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ model = "PowerPC,405EZ";
+ reg = <0x0>;
+ clock-frequency = <0>; /* Filled in by wrapper */
+ timebase-frequency = <0>; /* Filled in by wrapper */
+ i-cache-line-size = <32>;
+ d-cache-line-size = <32>;
+ i-cache-size = <16384>;
+ d-cache-size = <16384>;
+ dcr-controller;
+ dcr-access-method = "native";
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x0 0x0>; /* Filled in by wrapper */
+ };
+
+ UIC0: interrupt-controller {
+ compatible = "ibm,uic-405ez", "ibm,uic";
+ interrupt-controller;
+ dcr-reg = <0x0c0 0x009>;
+ cell-index = <0>;
+ #address-cells = <0>;
+ #size-cells = <0>;
+ #interrupt-cells = <2>;
+ };
+
+ plb {
+ compatible = "ibm,plb-405ez", "ibm,plb3";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ clock-frequency = <0>; /* Filled in by wrapper */
+
+ MAL0: mcmal {
+ compatible = "ibm,mcmal-405ez", "ibm,mcmal";
+ dcr-reg = <0x380 0x62>;
+ num-tx-chans = <1>;
+ num-rx-chans = <1>;
+ interrupt-parent = <&UIC0>;
+ /* 405EZ has only 3 interrupts to the UIC, as
+ * SERR, TXDE, and RXDE are or'd together into
+ * one UIC bit
+ */
+ interrupts = <
+ 0x13 0x4 /* TXEOB */
+ 0x15 0x4 /* RXEOB */
+ 0x12 0x4 /* SERR, TXDE, RXDE */>;
+ };
+
+ POB0: opb {
+ compatible = "ibm,opb-405ez", "ibm,opb";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ dcr-reg = <0x0a 0x05>;
+ clock-frequency = <0>; /* Filled in by wrapper */
+
+ UART0: serial@ef600300 {
+ device_type = "serial";
+ compatible = "ns16550";
+ reg = <0xef600300 0x8>;
+ virtual-reg = <0xef600300>;
+ clock-frequency = <0>; /* Filled in by wrapper */
+ current-speed = <115200>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x5 0x4>;
+ };
+
+ UART1: serial@ef600400 {
+ device_type = "serial";
+ compatible = "ns16550";
+ reg = <0xef600400 0x8>;
+ clock-frequency = <0>; /* Filled in by wrapper */
+ current-speed = <115200>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x6 0x4>;
+ };
+
+ IIC: i2c@ef600500 {
+ compatible = "ibm,iic-405ez", "ibm,iic";
+ reg = <0xef600500 0x11>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0xa 0x4>;
+ };
+
+ GPIO0: gpio@ef600700 {
+ compatible = "ibm,gpio-405ez";
+ reg = <0xef600700 0x20>;
+ };
+
+ GPIO1: gpio@ef600800 {
+ compatible = "ibm,gpio-405ez";
+ reg = <0xef600800 0x20>;
+ };
+
+ EMAC0: ethernet@ef600900 {
+ device_type = "network";
+ compatible = "ibm,emac-405ez", "ibm,emac";
+ interrupt-parent = <&UIC0>;
+ interrupts = <
+ 0x10 0x4 /* Ethernet */
+ 0x11 0x4 /* Ethernet Wake up */>;
+ local-mac-address = [000000000000]; /* Filled in by wrapper */
+ reg = <0xef600900 0x70>;
+ mal-device = <&MAL0>;
+ mal-tx-channel = <0>;
+ mal-rx-channel = <0>;
+ cell-index = <0>;
+ max-frame-size = <1500>;
+ rx-fifo-size = <4096>;
+ tx-fifo-size = <2048>;
+ phy-mode = "mii";
+ phy-map = <0x0>;
+ };
+
+ CAN0: can@ef601000 {
+ compatible = "amcc,can-405ez";
+ reg = <0xef601000 0x620>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x7 0x4>;
+ };
+
+ CAN1: can@ef601800 {
+ compatible = "amcc,can-405ez";
+ reg = <0xef601800 0x620>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x8 0x4>;
+ };
+
+ cameleon@ef602000 {
+ compatible = "amcc,cameleon-405ez";
+ reg = <0xef602000 0x800>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0xb 0x4 0xc 0x4>;
+ };
+
+ ieee1588@ef602800 {
+ compatible = "amcc,ieee1588-405ez";
+ reg = <0xef602800 0x60>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x4 0x4>;
+ /* This thing is a bit weird. It has it's own UIC
+ * that it uses to generate snapshot triggers. We
+ * don't really support this device yet, and it needs
+ * work to figure this out.
+ */
+ dcr-reg = <0xe0 0x9>;
+ };
+
+ usb@ef603000 {
+ compatible = "ohci-be";
+ reg = <0xef603000 0x80>;
+ interrupts-parent = <&UIC0>;
+ interrupts = <0xd 0x4 0xe 0x4>;
+ };
+
+ dac@ef603300 {
+ compatible = "amcc,dac-405ez";
+ reg = <0xef603300 0x40>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x18 0x4>;
+ };
+
+ adc@ef603400 {
+ compatible = "amcc,adc-405ez";
+ reg = <0xef603400 0x40>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x17 0x4>;
+ };
+
+ spi@ef603500 {
+ compatible = "amcc,spi-405ez";
+ reg = <0xef603500 0x100>;
+ interrupt-parent = <&UIC0>;
+ interrupts = <0x9 0x4>;
+ };
+ };
+
+ EBC0: ebc {
+ compatible = "ibm,ebc-405ez", "ibm,ebc";
+ dcr-reg = <0x12 0x2>;
+ #address-cells = <2>;
+ #size-cells = <1>;
+ clock-frequency = <0>; /* Filled in by wrapper */
+ };
+ };
+
+ chosen {
+ linux,stdout-path = "/plb/opb/serial@ef600300";
+ };
+};
--- /dev/null
+/*
+* Device Tree Source for Netstal Maschinen HCU4
+* based on the IBM Walnut
+*
+* Copyright 2008
+* Niklaus Giger <niklaus.giger@member.fsf.org>
+*
+* Copyright 2007 IBM Corp.
+* Josh Boyer <jwboyer@linux.vnet.ibm.com>
+*
+* This file is licensed under the terms of the GNU General Public
+* License version 2. This program is licensed "as is" without
+* any warranty of any kind, whether express or implied.
+*/
+
+/dts-v1/;
+
+/ {
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ model = "netstal,hcu4";
+ compatible = "netstal,hcu4";
+ dcr-parent = <0x1>;
+
+ aliases {
+ ethernet0 = "/plb/opb/ethernet@ef600800";
+ serial0 = "/plb/opb/serial@ef600300";
+ };
+
+ cpus {
+ #address-cells = <0x1>;
+ #size-cells = <0x0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ model = "PowerPC,405GPr";
+ reg = <0x0>;
+ clock-frequency = <0>; /* Filled in by U-Boot */
+ timebase-frequency = <0x0>; /* Filled in by U-Boot */
+ i-cache-line-size = <0x20>;
+ d-cache-line-size = <0x20>;
+ i-cache-size = <0x4000>;
+ d-cache-size = <0x4000>;
+ dcr-controller;
+ dcr-access-method = "native";
+ linux,phandle = <0x1>;
+ };
+ };
+
+ memory {
+ device_type = "memory";
+ reg = <0x0 0x0>; /* Filled in by U-Boot */
+ };
+
+ UIC0: interrupt-controller {
+ compatible = "ibm,uic";
+ interrupt-controller;
+ cell-index = <0x0>;
+ dcr-reg = <0xc0 0x9>;
+ #address-cells = <0x0>;
+ #size-cells = <0x0>;
+ #interrupt-cells = <0x2>;
+ linux,phandle = <0x2>;
+ };
+
+ plb {
+ compatible = "ibm,plb3";
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ ranges;
+ clock-frequency = <0x0>; /* Filled in by U-Boot */
+
+ SDRAM0: memory-controller {
+ compatible = "ibm,sdram-405gp";
+ dcr-reg = <0x10 0x2>;
+ };
+
+ MAL: mcmal {
+ compatible = "ibm,mcmal-405gp", "ibm,mcmal";
+ dcr-reg = <0x180 0x62>;
+ num-tx-chans = <0x1>;
+ num-rx-chans = <0x1>;
+ interrupt-parent = <0x2>;
+ interrupts = <0xb 0x4 0xc 0x4 0xa 0x4 0xd 0x4 0xe 0x4>;
+ linux,phandle = <0x3>;
+ };
+
+ POB0: opb {
+ compatible = "ibm,opb-405gp", "ibm,opb";
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+ ranges = <0xef600000 0xef600000 0xa00000>;
+ dcr-reg = <0xa0 0x5>;
+ clock-frequency = <0x0>; /* Filled in by U-Boot */
+
+ UART0: serial@ef600300 {
+ device_type = "serial";
+ compatible = "ns16550";
+ reg = <0xef600300 0x8>;
+ virtual-reg = <0xef600300>;
+ clock-frequency = <0x0>;/* Filled in by U-Boot */
+ current-speed = <0>; /* Filled in by U-Boot */
+ interrupt-parent = <0x2>;
+ interrupts = <0x0 0x4>;
+ };
+
+ IIC: i2c@ef600500 {
+ compatible = "ibm,iic-405gp", "ibm,iic";
+ reg = <0xef600500 0x11>;
+ interrupt-parent = <0x2>;
+ interrupts = <0x2 0x4>;
+ };
+
+ GPIO: gpio@ef600700 {
+ compatible = "ibm,gpio-405gp";
+ reg = <0xef600700 0x20>;
+ };
+
+ EMAC: ethernet@ef600800 {
+ device_type = "network";
+ compatible = "ibm,emac-405gp", "ibm,emac";
+ interrupt-parent = <0x2>;
+ interrupts = <0xf 0x4 0x9 0x4>;
+ local-mac-address = [00 00 00 00 00 00];
+ reg = <0xef600800 0x70>;
+ mal-device = <0x3>;
+ mal-tx-channel = <0x0>;
+ mal-rx-channel = <0x0>;
+ cell-index = <0x0>;
+ max-frame-size = <0x5dc>;
+ rx-fifo-size = <0x1000>;
+ tx-fifo-size = <0x800>;
+ phy-mode = "rmii";
+ phy-map = <0x1>;
+ };
+ };
+
+ EBC0: ebc {
+ compatible = "ibm,ebc-405gp", "ibm,ebc";
+ dcr-reg = <0x12 0x2>;
+ #address-cells = <0x2>;
+ #size-cells = <0x1>;
+ clock-frequency = <0x0>; /* Filled in by U-Boot */
+
+ sram@0,0 {
+ reg = <0x0 0x0 0x80000>;
+ };
+
+ flash@0,80000 {
+ compatible = "jedec-flash";
+ bank-width = <0x1>;
+ reg = <0x0 0x80000 0x80000>;
+ #address-cells = <0x1>;
+ #size-cells = <0x1>;
+
+ partition@0 {
+ label = "OpenBIOS";
+ reg = <0x0 0x80000>;
+ read-only;
+ };
+ };
+ };
+ };
+
+ chosen {
+ linux,stdout-path = "/plb/opb/serial@ef600300";
+ };
+};
compatible = "dallas,ds1339";
reg = <0x68>;
};
+
+ mcu_pio: mcu@a {
+ #gpio-cells = <2>;
+ compatible = "fsl,mc9s08qg8-mpc8315erdb",
+ "fsl,mcu-mpc8349emitx";
+ reg = <0x0a>;
+ gpio-controller;
+ };
};
spi@7000 {
};
bcsr@f8000000 {
- device_type = "board-control";
+ compatible = "fsl,mpc8323mds-bcsr";
reg = <0xf8000000 0x8000>;
};
interrupts = <15 0x8>;
interrupt-parent = <&ipic>;
dfsrr;
+
+ rtc@68 {
+ device_type = "rtc";
+ compatible = "dallas,ds1339";
+ reg = <0x68>;
+ interrupts = <18 0x8>;
+ interrupt-parent = <&ipic>;
+ };
};
spi@7000 {
interrupt-parent = <&ipic>;
interrupts = <71 8>;
};
+
+ mcu_pio: mcu@a {
+ #gpio-cells = <2>;
+ compatible = "fsl,mc9s08qg8-mpc8349emitx",
+ "fsl,mcu-mpc8349emitx";
+ reg = <0x0a>;
+ gpio-controller;
+ };
};
usb@22000 {
interrupts = <15 0x8>;
interrupt-parent = <&ipic>;
dfsrr;
+
+ rtc@68 {
+ device_type = "rtc";
+ compatible = "dallas,ds1339";
+ reg = <0x68>;
+ interrupts = <18 0x8>;
+ interrupt-parent = <&ipic>;
+ };
};
spi@7000 {
};
bcsr@e2400000 {
- device_type = "board-control";
+ compatible = "fsl,mpc8349mds-bcsr";
reg = <0xe2400000 0x8000>;
};
};
bcsr@1,0 {
- device_type = "board-control";
+ compatible = "fsl,mpc8360mds-bcsr";
reg = <1 0 0x8000>;
};
};
compatible = "dallas,ds1339";
reg = <0x68>;
};
+
+ mcu_pio: mcu@a {
+ #gpio-cells = <2>;
+ compatible = "fsl,mc9s08qg8-mpc8377erdb",
+ "fsl,mcu-mpc8349emitx";
+ reg = <0x0a>;
+ gpio-controller;
+ };
};
i2c@3100 {
compatible = "dallas,ds1339";
reg = <0x68>;
};
+
+ mcu_pio: mcu@a {
+ #gpio-cells = <2>;
+ compatible = "fsl,mc9s08qg8-mpc8378erdb",
+ "fsl,mcu-mpc8349emitx";
+ reg = <0x0a>;
+ gpio-controller;
+ };
};
i2c@3100 {
compatible = "dallas,ds1339";
reg = <0x68>;
};
+
+ mcu_pio: mcu@a {
+ #gpio-cells = <2>;
+ compatible = "fsl,mc9s08qg8-mpc8379erdb",
+ "fsl,mcu-mpc8349emitx";
+ reg = <0x0a>;
+ gpio-controller;
+ };
};
i2c@3100 {
reg = <0x0 0x80>;
cell-index = <0>;
interrupt-parent = <&mpic>;
- interrupts = <14 0x2>;
+ interrupts = <20 2>;
};
dma-channel@80 {
compatible = "fsl,mpc8536-dma-channel",
reg = <0x80 0x80>;
cell-index = <1>;
interrupt-parent = <&mpic>;
- interrupts = <15 0x2>;
+ interrupts = <21 2>;
};
dma-channel@100 {
compatible = "fsl,mpc8536-dma-channel",
reg = <0x100 0x80>;
cell-index = <2>;
interrupt-parent = <&mpic>;
- interrupts = <16 0x2>;
+ interrupts = <22 2>;
};
dma-channel@180 {
compatible = "fsl,mpc8536-dma-channel",
reg = <0x180 0x80>;
cell-index = <3>;
interrupt-parent = <&mpic>;
- interrupts = <17 0x2>;
+ interrupts = <23 2>;
};
};
enet0: ethernet@24000 {
cell-index = <0>;
device_type = "network";
- model = "TSEC";
+ model = "eTSEC";
compatible = "gianfar";
reg = <0x24000 0x1000>;
local-mac-address = [ 00 00 00 00 00 00 ];
enet1: ethernet@26000 {
cell-index = <1>;
device_type = "network";
- model = "TSEC";
+ model = "eTSEC";
compatible = "gianfar";
reg = <0x26000 0x1000>;
local-mac-address = [ 00 00 00 00 00 00 ];
};
bcsr@f8000000 {
- device_type = "board-control";
+ compatible = "fsl,mpc8568mds-bcsr";
reg = <0xf8000000 0x8000>;
};
/ {
model = "fsl,MPC8572DS";
compatible = "fsl,MPC8572DS";
- #address-cells = <1>;
- #size-cells = <1>;
+ #address-cells = <2>;
+ #size-cells = <2>;
aliases {
ethernet0 = &enet0;
memory {
device_type = "memory";
- reg = <0x0 0x0>; // Filled by U-Boot
};
soc8572@ffe00000 {
#size-cells = <1>;
device_type = "soc";
compatible = "simple-bus";
- ranges = <0x0 0xffe00000 0x100000>;
- reg = <0xffe00000 0x1000>; // CCSRBAR & soc regs, remove once parse code for immrbase fixed
+ ranges = <0x0 0 0xffe00000 0x100000>;
+ reg = <0 0xffe00000 0 0x1000>; // CCSRBAR & soc regs, remove once parse code for immrbase fixed
bus-frequency = <0>; // Filled out by uboot.
memory-controller@2000 {
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
- reg = <0xffe08000 0x1000>;
+ reg = <0 0xffe08000 0 0x1000>;
bus-range = <0 255>;
- ranges = <0x2000000 0x0 0x80000000 0x80000000 0x0 0x20000000
- 0x1000000 0x0 0x0 0xffc00000 0x0 0x10000>;
+ ranges = <0x2000000 0x0 0x80000000 0 0x80000000 0x0 0x20000000
+ 0x1000000 0x0 0x00000000 0 0xffc00000 0x0 0x00010000>;
clock-frequency = <33333333>;
interrupt-parent = <&mpic>;
interrupts = <24 2>;
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
- reg = <0xffe09000 0x1000>;
+ reg = <0 0xffe09000 0 0x1000>;
bus-range = <0 255>;
- ranges = <0x2000000 0x0 0xa0000000 0xa0000000 0x0 0x20000000
- 0x1000000 0x0 0x0 0xffc10000 0x0 0x10000>;
+ ranges = <0x2000000 0x0 0xa0000000 0 0xa0000000 0x0 0x20000000
+ 0x1000000 0x0 0x00000000 0 0xffc10000 0x0 0x00010000>;
clock-frequency = <33333333>;
interrupt-parent = <&mpic>;
interrupts = <26 2>;
#interrupt-cells = <1>;
#size-cells = <2>;
#address-cells = <3>;
- reg = <0xffe0a000 0x1000>;
+ reg = <0 0xffe0a000 0 0x1000>;
bus-range = <0 255>;
- ranges = <0x2000000 0x0 0xc0000000 0xc0000000 0x0 0x20000000
- 0x1000000 0x0 0x0 0xffc20000 0x0 0x10000>;
+ ranges = <0x2000000 0x0 0xc0000000 0 0xc0000000 0x0 0x20000000
+ 0x1000000 0x0 0x00000000 0 0xffc20000 0x0 0x00010000>;
clock-frequency = <33333333>;
interrupt-parent = <&mpic>;
interrupts = <27 2>;
return check_err(rc);
}
+static int fdt_wrapper_del_node(const void *devp)
+{
+ return fdt_del_node(fdt, devp_offset(devp));
+}
+
static void *fdt_wrapper_get_parent(const void *devp)
{
return offset_devp(fdt_parent_offset(fdt, devp_offset(devp)));
void fdt_init(void *blob)
{
int err;
+ int bufsize;
dt_ops.finddevice = fdt_wrapper_finddevice;
dt_ops.getprop = fdt_wrapper_getprop;
dt_ops.create_node = fdt_wrapper_create_node;
dt_ops.find_node_by_prop_value = fdt_wrapper_find_node_by_prop_value;
dt_ops.find_node_by_compatible = fdt_wrapper_find_node_by_compatible;
+ dt_ops.del_node = fdt_wrapper_del_node;
dt_ops.get_path = fdt_wrapper_get_path;
dt_ops.finalize = fdt_wrapper_finalize;
/* Make sure the dt blob is the right version and so forth */
fdt = blob;
- err = fdt_open_into(fdt, fdt, fdt_totalsize(blob));
- if (err == -FDT_ERR_NOSPACE) {
- int bufsize = fdt_totalsize(fdt) + 4;
- buf = malloc(bufsize);
- err = fdt_open_into(fdt, buf, bufsize);
- }
+ bufsize = fdt_totalsize(fdt) + 4;
+ buf = malloc(bufsize);
+ if(!buf)
+ fatal("malloc failed. can't relocate the device tree\n\r");
+
+ err = fdt_open_into(fdt, buf, bufsize);
if (err != 0)
fatal("fdt_init(): %s\n\r", fdt_strerror(err));
- if (buf)
- fdt = buf;
+ fdt = buf;
}
if (platform_ops.vmlinux_alloc) {
addr = platform_ops.vmlinux_alloc(ei.memsize);
} else {
- if ((unsigned long)_start < ei.memsize)
+ /*
+ * Check if the kernel image (without bss) would overwrite the
+ * bootwrapper. The device tree has been moved in fdt_init()
+ * to an area allocated with malloc() (somewhere past _end).
+ */
+ if ((unsigned long)_start < ei.loadsize)
fatal("Insufficient memory for kernel at address 0!"
- " (_start=%p)\n\r", _start);
+ " (_start=%p, uncomressed size=%08x)\n\r",
+ _start, ei.loadsize);
+
+ if ((unsigned long)_end < ei.memsize)
+ fatal("The final kernel image would overwrite the "
+ "device tree\n\r");
}
/* Finally, gunzip the kernel */
const int buflen);
int (*setprop)(const void *phandle, const char *name,
const void *buf, const int buflen);
+ int (*del_node)(const void *phandle);
void *(*get_parent)(const void *phandle);
/* The node must not already exist. */
void *(*create_node)(const void *parent, const char *name);
return -1;
}
+static inline int del_node(const void *devp)
+{
+ return dt_ops.del_node ? dt_ops.del_node(devp) : -1;
+}
+
static inline void *get_parent(const char *devp)
{
return dt_ops.get_parent ? dt_ops.get_parent(devp) : NULL;
.globl memcmp
memcmp:
cmpwi 0,r5,0
- blelr
+ ble 2f
mtctr r5
addi r6,r3,-1
addi r4,r4,-1
subf. r3,r0,r3
bdnzt 2,1b
blr
+2: li r3,0
+ blr
/*
# post-processing needed for some platforms
case "$platform" in
-pseries|chrp)
+pseries)
${CROSS}objcopy -O binary -j .fakeelf "$kernel" "$ofile".rpanote
$objbin/addnote "$ofile" "$ofile".rpanote
rm -r "$ofile".rpanote
;;
+chrp)
+ $objbin/addnote -r c00000 "$ofile"
+ ;;
coff)
${CROSS}objcopy -O aixcoff-rs6000 --set-start "$entry" "$ofile"
$objbin/hack-coff "$ofile"
--- /dev/null
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.27-rc5
+# Mon Oct 13 13:47:16 2008
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_HAVE_LATENCYTOP_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_GROUP_SCHED=y
+# CONFIG_FAIR_GROUP_SCHED is not set
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_COMPAT_BRK=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
+CONFIG_HAVE_IOREMAP_PROT=y
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+# CONFIG_HAVE_DMA_ATTRS is not set
+# CONFIG_USE_GENERIC_SMP_HELPERS is not set
+# CONFIG_HAVE_CLK is not set
+CONFIG_PROC_PAGE_MONITOR=y
+# CONFIG_HAVE_GENERIC_DMA_COHERENT is not set
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_INTEGRITY is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+CONFIG_CLASSIC_RCU=y
+# CONFIG_PPC4xx_PCI_EXPRESS is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+CONFIG_ACADIA=y
+# CONFIG_EP405 is not set
+# CONFIG_KILAUEA is not set
+# CONFIG_MAKALU is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+CONFIG_PPC40x_SIMPLE=y
+CONFIG_405EZ=y
+# CONFIG_IPIC is not set
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+# CONFIG_SCHED_HRTICK is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+# CONFIG_IOMMU_HELPER is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_MIGRATION=y
+# CONFIG_RESOURCES_64BIT is not set
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+CONFIG_EXTRA_TARGETS=""
+# CONFIG_PM is not set
+CONFIG_SECCOMP=y
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_4xx_SOC=y
+CONFIG_PPC_PCI_CHOICE=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+CONFIG_PCI_LEGACY=y
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+CONFIG_FIRMWARE_IN_KERNEL=y
+CONFIG_EXTRA_FIRMWARE=""
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+# CONFIG_BLK_DEV_HD is not set
+# CONFIG_MISC_DEVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+
+#
+# Enable only one of the two stacks, unless you know what you are doing
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+CONFIG_MII=y
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=256
+CONFIG_IBM_NEW_EMAC_TXB=256
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+CONFIG_IBM_NEW_EMAC_DEBUG=y
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL=y
+CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT=y
+CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR=y
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+# CONFIG_NETDEV_1000 is not set
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+# CONFIG_IWLWIFI_LEDS is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_NOZOMI is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
+# CONFIG_GPIOLIB is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+CONFIG_THERMAL=y
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_CORE is not set
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+# CONFIG_MFD_TMIO is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_OMFS_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+CONFIG_ROOT_NFS=y
+# CONFIG_NFSD is not set
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_T10DIF is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+# CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC is not set
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC_VALUE=0
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_MEMORY_INIT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_LATENCYTOP is not set
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_HAVE_FTRACE=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+# CONFIG_FTRACE is not set
+# CONFIG_SCHED_TRACER is not set
+# CONFIG_CONTEXT_SWITCH_TRACER is not set
+# CONFIG_SAMPLES is not set
+CONFIG_HAVE_ARCH_KGDB=y
+# CONFIG_KGDB is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_CODE_PATCHING_SELFTEST is not set
+# CONFIG_FTR_FIXUP_SELFTEST is not set
+# CONFIG_MSI_BITMAP_SELFTEST is not set
+# CONFIG_XMON is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_RMD128 is not set
+# CONFIG_CRYPTO_RMD160 is not set
+# CONFIG_CRYPTO_RMD256 is not set
+# CONFIG_CRYPTO_RMD320 is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_CRYPTO_DEV_HIFN_795X is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
--- /dev/null
+#
+# Automatically generated make config: don't edit
+# Linux kernel version: 2.6.26.5
+# Tue Sep 16 00:44:33 2008
+#
+# CONFIG_PPC64 is not set
+
+#
+# Processor support
+#
+# CONFIG_6xx is not set
+# CONFIG_PPC_85xx is not set
+# CONFIG_PPC_8xx is not set
+CONFIG_40x=y
+# CONFIG_44x is not set
+# CONFIG_E200 is not set
+CONFIG_4xx=y
+# CONFIG_PPC_MM_SLICES is not set
+CONFIG_NOT_COHERENT_CACHE=y
+CONFIG_PPC32=y
+CONFIG_WORD_SIZE=32
+CONFIG_PPC_MERGE=y
+CONFIG_MMU=y
+CONFIG_GENERIC_CMOS_UPDATE=y
+CONFIG_GENERIC_TIME=y
+CONFIG_GENERIC_TIME_VSYSCALL=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_HARDIRQS=y
+# CONFIG_HAVE_SETUP_PER_CPU_AREA is not set
+CONFIG_IRQ_PER_CPU=y
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_RWSEM_XCHGADD_ALGORITHM=y
+CONFIG_ARCH_HAS_ILOG2_U32=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_FIND_NEXT_BIT=y
+# CONFIG_ARCH_NO_VIRT_TO_BUS is not set
+CONFIG_PPC=y
+CONFIG_EARLY_PRINTK=y
+CONFIG_GENERIC_NVRAM=y
+CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER=y
+CONFIG_ARCH_MAY_HAVE_PC_FDC=y
+CONFIG_PPC_OF=y
+CONFIG_OF=y
+CONFIG_PPC_UDBG_16550=y
+# CONFIG_GENERIC_TBSYNC is not set
+CONFIG_AUDIT_ARCH=y
+CONFIG_GENERIC_BUG=y
+# CONFIG_DEFAULT_UIMAGE is not set
+CONFIG_PPC_DCR_NATIVE=y
+# CONFIG_PPC_DCR_MMIO is not set
+CONFIG_PPC_DCR=y
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+
+#
+# General setup
+#
+CONFIG_EXPERIMENTAL=y
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_INIT_ENV_ARG_LIMIT=32
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_SWAP=y
+CONFIG_SYSVIPC=y
+CONFIG_SYSVIPC_SYSCTL=y
+CONFIG_POSIX_MQUEUE=y
+# CONFIG_BSD_PROCESS_ACCT is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_AUDIT is not set
+# CONFIG_IKCONFIG is not set
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_CGROUPS is not set
+CONFIG_GROUP_SCHED=y
+CONFIG_FAIR_GROUP_SCHED=y
+# CONFIG_RT_GROUP_SCHED is not set
+CONFIG_USER_SCHED=y
+# CONFIG_CGROUP_SCHED is not set
+CONFIG_SYSFS_DEPRECATED=y
+CONFIG_SYSFS_DEPRECATED_V2=y
+# CONFIG_RELAY is not set
+# CONFIG_NAMESPACES is not set
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_INITRAMFS_SOURCE=""
+# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set
+CONFIG_SYSCTL=y
+CONFIG_EMBEDDED=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYSCTL_SYSCALL_CHECK=y
+CONFIG_KALLSYMS=y
+CONFIG_KALLSYMS_ALL=y
+CONFIG_KALLSYMS_EXTRA_PASS=y
+CONFIG_HOTPLUG=y
+CONFIG_PRINTK=y
+# CONFIG_LOGBUFFER is not set
+CONFIG_BUG=y
+CONFIG_ELF_CORE=y
+CONFIG_COMPAT_BRK=y
+CONFIG_BASE_FULL=y
+CONFIG_FUTEX=y
+CONFIG_ANON_INODES=y
+CONFIG_EPOLL=y
+CONFIG_SIGNALFD=y
+CONFIG_TIMERFD=y
+CONFIG_EVENTFD=y
+CONFIG_SHMEM=y
+CONFIG_VM_EVENT_COUNTERS=y
+CONFIG_SLUB_DEBUG=y
+# CONFIG_SLAB is not set
+CONFIG_SLUB=y
+# CONFIG_SLOB is not set
+# CONFIG_PROFILING is not set
+# CONFIG_MARKERS is not set
+CONFIG_HAVE_OPROFILE=y
+# CONFIG_KPROBES is not set
+CONFIG_HAVE_KPROBES=y
+CONFIG_HAVE_KRETPROBES=y
+# CONFIG_HAVE_DMA_ATTRS is not set
+CONFIG_PROC_PAGE_MONITOR=y
+CONFIG_SLABINFO=y
+CONFIG_RT_MUTEXES=y
+# CONFIG_TINY_SHMEM is not set
+CONFIG_BASE_SMALL=0
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_LOAD is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODVERSIONS is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_KMOD=y
+CONFIG_BLOCK=y
+CONFIG_LBD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_LSF is not set
+# CONFIG_BLK_DEV_BSG is not set
+
+#
+# IO Schedulers
+#
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IOSCHED_AS=y
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_CFQ=y
+CONFIG_DEFAULT_AS=y
+# CONFIG_DEFAULT_DEADLINE is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_NOOP is not set
+CONFIG_DEFAULT_IOSCHED="anticipatory"
+CONFIG_CLASSIC_RCU=y
+# CONFIG_PPC4xx_PCI_EXPRESS is not set
+
+#
+# Platform support
+#
+# CONFIG_PPC_MPC512x is not set
+# CONFIG_PPC_MPC5121 is not set
+# CONFIG_PPC_CELL is not set
+# CONFIG_PPC_CELL_NATIVE is not set
+# CONFIG_PQ2ADS is not set
+# CONFIG_EP405 is not set
+CONFIG_HCU4=y
+# CONFIG_KILAUEA is not set
+# CONFIG_MAKALU is not set
+# CONFIG_WALNUT is not set
+# CONFIG_XILINX_VIRTEX_GENERIC_BOARD is not set
+# CONFIG_IPIC is not set
+# CONFIG_MPIC is not set
+# CONFIG_MPIC_WEIRD is not set
+# CONFIG_PPC_I8259 is not set
+# CONFIG_PPC_RTAS is not set
+# CONFIG_MMIO_NVRAM is not set
+# CONFIG_PPC_MPC106 is not set
+# CONFIG_PPC_970_NAP is not set
+# CONFIG_PPC_INDIRECT_IO is not set
+# CONFIG_GENERIC_IOMAP is not set
+# CONFIG_CPU_FREQ is not set
+# CONFIG_FSL_ULI1575 is not set
+
+#
+# Kernel options
+#
+# CONFIG_HIGHMEM is not set
+# CONFIG_TICK_ONESHOT is not set
+# CONFIG_NO_HZ is not set
+# CONFIG_HIGH_RES_TIMERS is not set
+CONFIG_GENERIC_CLOCKEVENTS_BUILD=y
+# CONFIG_HZ_100 is not set
+CONFIG_HZ_250=y
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_1000 is not set
+CONFIG_HZ=250
+# CONFIG_SCHED_HRTICK is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+# CONFIG_PREEMPT is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_MATH_EMULATION is not set
+# CONFIG_IOMMU_HELPER is not set
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_ARCH_HAS_WALK_MEMORY=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
+CONFIG_ARCH_FLATMEM_ENABLE=y
+CONFIG_ARCH_POPULATES_NODE_MAP=y
+CONFIG_SELECT_MEMORY_MODEL=y
+CONFIG_FLATMEM_MANUAL=y
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+CONFIG_FLATMEM=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_SPARSEMEM_STATIC is not set
+# CONFIG_SPARSEMEM_VMEMMAP_ENABLE is not set
+CONFIG_PAGEFLAGS_EXTENDED=y
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_RESOURCES_64BIT=y
+CONFIG_ZONE_DMA_FLAG=1
+CONFIG_BOUNCE=y
+CONFIG_VIRT_TO_BUS=y
+CONFIG_FORCE_MAX_ZONEORDER=11
+CONFIG_PROC_DEVICETREE=y
+# CONFIG_CMDLINE_BOOL is not set
+# CONFIG_PM is not set
+CONFIG_SECCOMP=y
+CONFIG_ISA_DMA_API=y
+
+#
+# Bus options
+#
+CONFIG_ZONE_DMA=y
+CONFIG_PPC_INDIRECT_PCI=y
+CONFIG_4xx_SOC=y
+CONFIG_PCI=y
+CONFIG_PCI_DOMAINS=y
+CONFIG_PCI_SYSCALL=y
+# CONFIG_PCIEPORTBUS is not set
+CONFIG_ARCH_SUPPORTS_MSI=y
+# CONFIG_PCI_MSI is not set
+# CONFIG_PCI_LEGACY is not set
+# CONFIG_PCI_DEBUG is not set
+# CONFIG_PCCARD is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HAS_RAPIDIO is not set
+
+#
+# Advanced setup
+#
+# CONFIG_ADVANCED_OPTIONS is not set
+
+#
+# Default settings for advanced configuration options are used
+#
+CONFIG_LOWMEM_SIZE=0x30000000
+CONFIG_PAGE_OFFSET=0xc0000000
+CONFIG_KERNEL_START=0xc0000000
+CONFIG_PHYSICAL_START=0x00000000
+CONFIG_TASK_SIZE=0xc0000000
+CONFIG_CONSISTENT_START=0xff100000
+CONFIG_CONSISTENT_SIZE=0x00200000
+
+#
+# Networking
+#
+CONFIG_NET=y
+
+#
+# Networking options
+#
+CONFIG_PACKET=y
+# CONFIG_PACKET_MMAP is not set
+CONFIG_UNIX=y
+# CONFIG_NET_KEY is not set
+CONFIG_INET=y
+# CONFIG_IP_MULTICAST is not set
+# CONFIG_IP_ADVANCED_ROUTER is not set
+CONFIG_IP_FIB_HASH=y
+CONFIG_IP_PNP=y
+CONFIG_IP_PNP_DHCP=y
+CONFIG_IP_PNP_BOOTP=y
+# CONFIG_IP_PNP_RARP is not set
+# CONFIG_NET_IPIP is not set
+# CONFIG_NET_IPGRE is not set
+# CONFIG_ARPD is not set
+# CONFIG_SYN_COOKIES is not set
+# CONFIG_INET_AH is not set
+# CONFIG_INET_ESP is not set
+# CONFIG_INET_IPCOMP is not set
+# CONFIG_INET_XFRM_TUNNEL is not set
+# CONFIG_INET_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
+# CONFIG_INET_XFRM_MODE_TUNNEL is not set
+# CONFIG_INET_XFRM_MODE_BEET is not set
+# CONFIG_INET_LRO is not set
+CONFIG_INET_DIAG=y
+CONFIG_INET_TCP_DIAG=y
+# CONFIG_TCP_CONG_ADVANCED is not set
+CONFIG_TCP_CONG_CUBIC=y
+CONFIG_DEFAULT_TCP_CONG="cubic"
+# CONFIG_TCP_MD5SIG is not set
+# CONFIG_IPV6 is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETFILTER is not set
+# CONFIG_IP_DCCP is not set
+# CONFIG_IP_SCTP is not set
+# CONFIG_TIPC is not set
+# CONFIG_ATM is not set
+# CONFIG_BRIDGE is not set
+# CONFIG_VLAN_8021Q is not set
+# CONFIG_DECNET is not set
+# CONFIG_LLC2 is not set
+# CONFIG_IPX is not set
+# CONFIG_ATALK is not set
+# CONFIG_X25 is not set
+# CONFIG_LAPB is not set
+# CONFIG_ECONET is not set
+# CONFIG_WAN_ROUTER is not set
+# CONFIG_NET_SCHED is not set
+
+#
+# Network testing
+#
+# CONFIG_NET_PKTGEN is not set
+# CONFIG_HAMRADIO is not set
+# CONFIG_CAN is not set
+# CONFIG_IRDA is not set
+# CONFIG_BT is not set
+# CONFIG_AF_RXRPC is not set
+
+#
+# Wireless
+#
+# CONFIG_CFG80211 is not set
+# CONFIG_WIRELESS_EXT is not set
+# CONFIG_MAC80211 is not set
+# CONFIG_IEEE80211 is not set
+# CONFIG_RFKILL is not set
+# CONFIG_NET_9P is not set
+
+#
+# Device Drivers
+#
+
+#
+# Generic Driver Options
+#
+CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug"
+CONFIG_STANDALONE=y
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_FW_LOADER=y
+# CONFIG_DEBUG_DRIVER is not set
+# CONFIG_DEBUG_DEVRES is not set
+# CONFIG_SYS_HYPERVISOR is not set
+CONFIG_CONNECTOR=y
+CONFIG_PROC_EVENTS=y
+CONFIG_MTD=y
+# CONFIG_MTD_DEBUG is not set
+# CONFIG_MTD_CONCAT is not set
+CONFIG_MTD_PARTITIONS=y
+# CONFIG_MTD_REDBOOT_PARTS is not set
+CONFIG_MTD_CMDLINE_PARTS=y
+CONFIG_MTD_OF_PARTS=y
+# CONFIG_MTD_AR7_PARTS is not set
+
+#
+# User Modules And Translation Layers
+#
+CONFIG_MTD_CHAR=y
+CONFIG_MTD_BLKDEVS=m
+CONFIG_MTD_BLOCK=m
+# CONFIG_MTD_BLOCK_RO is not set
+# CONFIG_FTL is not set
+# CONFIG_NFTL is not set
+# CONFIG_INFTL is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_SSFDC is not set
+# CONFIG_MTD_OOPS is not set
+
+#
+# RAM/ROM/Flash chip drivers
+#
+CONFIG_MTD_CFI=y
+CONFIG_MTD_JEDECPROBE=y
+CONFIG_MTD_GEN_PROBE=y
+# CONFIG_MTD_CFI_ADV_OPTIONS is not set
+CONFIG_MTD_MAP_BANK_WIDTH_1=y
+CONFIG_MTD_MAP_BANK_WIDTH_2=y
+CONFIG_MTD_MAP_BANK_WIDTH_4=y
+# CONFIG_MTD_MAP_BANK_WIDTH_8 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_16 is not set
+# CONFIG_MTD_MAP_BANK_WIDTH_32 is not set
+CONFIG_MTD_CFI_I1=y
+CONFIG_MTD_CFI_I2=y
+# CONFIG_MTD_CFI_I4 is not set
+# CONFIG_MTD_CFI_I8 is not set
+# CONFIG_MTD_CFI_INTELEXT is not set
+CONFIG_MTD_CFI_AMDSTD=y
+# CONFIG_MTD_CFI_STAA is not set
+CONFIG_MTD_CFI_UTIL=y
+# CONFIG_MTD_RAM is not set
+# CONFIG_MTD_ROM is not set
+# CONFIG_MTD_ABSENT is not set
+
+#
+# Mapping drivers for chip access
+#
+# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+# CONFIG_MTD_PHYSMAP is not set
+CONFIG_MTD_PHYSMAP_OF=y
+# CONFIG_MTD_INTEL_VR_NOR is not set
+# CONFIG_MTD_PLATRAM is not set
+
+#
+# Self-contained MTD device drivers
+#
+# CONFIG_MTD_PMC551 is not set
+# CONFIG_MTD_SLRAM is not set
+# CONFIG_MTD_PHRAM is not set
+# CONFIG_MTD_MTDRAM is not set
+# CONFIG_MTD_BLOCK2MTD is not set
+
+#
+# Disk-On-Chip Device Drivers
+#
+# CONFIG_MTD_DOC2000 is not set
+# CONFIG_MTD_DOC2001 is not set
+# CONFIG_MTD_DOC2001PLUS is not set
+# CONFIG_MTD_NAND is not set
+# CONFIG_MTD_ONENAND is not set
+
+#
+# UBI - Unsorted block images
+#
+# CONFIG_MTD_UBI is not set
+CONFIG_OF_DEVICE=y
+# CONFIG_PARPORT is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_CPQ_DA is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_UMEM is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+# CONFIG_BLK_DEV_LOOP is not set
+# CONFIG_BLK_DEV_NBD is not set
+# CONFIG_BLK_DEV_SX8 is not set
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=35000
+# CONFIG_BLK_DEV_XIP is not set
+# CONFIG_CDROM_PKTCDVD is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_XILINX_SYSACE is not set
+CONFIG_MISC_DEVICES=y
+# CONFIG_PHANTOM is not set
+# CONFIG_EEPROM_93CX6 is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_TIFM_CORE is not set
+# CONFIG_ENCLOSURE_SERVICES is not set
+CONFIG_HAVE_IDE=y
+# CONFIG_IDE is not set
+
+#
+# SCSI device support
+#
+# CONFIG_RAID_ATTRS is not set
+# CONFIG_SCSI is not set
+# CONFIG_SCSI_DMA is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_ATA is not set
+# CONFIG_MD is not set
+# CONFIG_FUSION is not set
+
+#
+# IEEE 1394 (FireWire) support
+#
+
+#
+# Enable only one of the two stacks, unless you know what you are doing
+#
+# CONFIG_FIREWIRE is not set
+# CONFIG_IEEE1394 is not set
+# CONFIG_I2O is not set
+# CONFIG_MACINTOSH_DRIVERS is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+# CONFIG_DUMMY is not set
+# CONFIG_BONDING is not set
+# CONFIG_MACVLAN is not set
+# CONFIG_EQUALIZER is not set
+# CONFIG_TUN is not set
+# CONFIG_VETH is not set
+# CONFIG_ARCNET is not set
+# CONFIG_PHYLIB is not set
+CONFIG_NET_ETHERNET=y
+# CONFIG_MII is not set
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_SUNGEM is not set
+# CONFIG_CASSINI is not set
+# CONFIG_NET_VENDOR_3COM is not set
+# CONFIG_NET_TULIP is not set
+# CONFIG_HP100 is not set
+CONFIG_IBM_NEW_EMAC=y
+CONFIG_IBM_NEW_EMAC_RXB=128
+CONFIG_IBM_NEW_EMAC_TXB=64
+CONFIG_IBM_NEW_EMAC_POLL_WEIGHT=32
+CONFIG_IBM_NEW_EMAC_RX_COPY_THRESHOLD=256
+CONFIG_IBM_NEW_EMAC_RX_SKB_HEADROOM=0
+# CONFIG_IBM_NEW_EMAC_DEBUG is not set
+# CONFIG_IBM_NEW_EMAC_ZMII is not set
+# CONFIG_IBM_NEW_EMAC_RGMII is not set
+# CONFIG_IBM_NEW_EMAC_TAH is not set
+# CONFIG_IBM_NEW_EMAC_EMAC4 is not set
+# CONFIG_NET_PCI is not set
+# CONFIG_B44 is not set
+CONFIG_NETDEV_1000=y
+# CONFIG_ACENIC is not set
+# CONFIG_DL2K is not set
+# CONFIG_E1000 is not set
+# CONFIG_E1000E is not set
+# CONFIG_E1000E_ENABLED is not set
+# CONFIG_IP1000 is not set
+# CONFIG_IGB is not set
+# CONFIG_NS83820 is not set
+# CONFIG_HAMACHI is not set
+# CONFIG_YELLOWFIN is not set
+# CONFIG_R8169 is not set
+# CONFIG_SIS190 is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_TIGON3 is not set
+# CONFIG_BNX2 is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_ATL1 is not set
+CONFIG_NETDEV_10000=y
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_IXGBE is not set
+# CONFIG_IXGB is not set
+# CONFIG_S2IO is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NIU is not set
+# CONFIG_MLX4_CORE is not set
+# CONFIG_TEHUTI is not set
+# CONFIG_BNX2X is not set
+# CONFIG_SFC is not set
+# CONFIG_TR is not set
+
+#
+# Wireless LAN
+#
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WLAN_80211 is not set
+# CONFIG_IWLWIFI_LEDS is not set
+# CONFIG_WAN is not set
+# CONFIG_FDDI is not set
+# CONFIG_HIPPI is not set
+# CONFIG_PPP is not set
+# CONFIG_SLIP is not set
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETPOLL is not set
+# CONFIG_NET_POLL_CONTROLLER is not set
+# CONFIG_ISDN is not set
+# CONFIG_PHONE is not set
+
+#
+# Input device support
+#
+# CONFIG_INPUT is not set
+
+#
+# Hardware I/O ports
+#
+# CONFIG_SERIO is not set
+# CONFIG_GAMEPORT is not set
+
+#
+# Character devices
+#
+# CONFIG_VT is not set
+CONFIG_DEVKMEM=y
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_NOZOMI is not set
+
+#
+# Serial drivers
+#
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_PCI=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_8250_EXTENDED=y
+# CONFIG_SERIAL_8250_MANY_PORTS is not set
+CONFIG_SERIAL_8250_SHARE_IRQ=y
+# CONFIG_SERIAL_8250_DETECT_IRQ is not set
+# CONFIG_SERIAL_8250_RSA is not set
+
+#
+# Non-8250 serial port support
+#
+# CONFIG_SERIAL_UARTLITE is not set
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_UNIX98_PTYS=y
+CONFIG_LEGACY_PTYS=y
+CONFIG_LEGACY_PTY_COUNT=256
+# CONFIG_IPMI_HANDLER is not set
+# CONFIG_HW_RANDOM is not set
+# CONFIG_NVRAM is not set
+# CONFIG_GEN_RTC is not set
+# CONFIG_R3964 is not set
+# CONFIG_APPLICOM is not set
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_DEVPORT=y
+# CONFIG_I2C is not set
+# CONFIG_SPI is not set
+# CONFIG_W1 is not set
+# CONFIG_POWER_SUPPLY is not set
+# CONFIG_HWMON is not set
+# CONFIG_THERMAL is not set
+# CONFIG_THERMAL_HWMON is not set
+# CONFIG_WATCHDOG is not set
+
+#
+# Sonics Silicon Backplane
+#
+CONFIG_SSB_POSSIBLE=y
+# CONFIG_SSB is not set
+
+#
+# Multifunction device drivers
+#
+# CONFIG_MFD_SM501 is not set
+# CONFIG_HTC_PASIC3 is not set
+
+#
+# Multimedia devices
+#
+
+#
+# Multimedia core support
+#
+# CONFIG_VIDEO_DEV is not set
+# CONFIG_DVB_CORE is not set
+# CONFIG_VIDEO_MEDIA is not set
+
+#
+# Multimedia drivers
+#
+# CONFIG_DAB is not set
+
+#
+# Graphics support
+#
+# CONFIG_AGP is not set
+# CONFIG_DRM is not set
+# CONFIG_VGASTATE is not set
+CONFIG_VIDEO_OUTPUT_CONTROL=m
+# CONFIG_FB is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+
+#
+# Display device support
+#
+# CONFIG_DISPLAY_SUPPORT is not set
+
+#
+# Sound
+#
+# CONFIG_SOUND is not set
+# CONFIG_USB_SUPPORT is not set
+# CONFIG_MMC is not set
+# CONFIG_MEMSTICK is not set
+# CONFIG_NEW_LEDS is not set
+# CONFIG_ACCESSIBILITY is not set
+# CONFIG_INFINIBAND is not set
+# CONFIG_EDAC is not set
+# CONFIG_RTC_CLASS is not set
+# CONFIG_DMADEVICES is not set
+# CONFIG_UIO is not set
+
+#
+# File systems
+#
+CONFIG_EXT2_FS=y
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+# CONFIG_EXT3_FS is not set
+# CONFIG_EXT4DEV_FS is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_XFS_FS is not set
+# CONFIG_OCFS2_FS is not set
+CONFIG_DNOTIFY=y
+CONFIG_INOTIFY=y
+CONFIG_INOTIFY_USER=y
+# CONFIG_QUOTA is not set
+# CONFIG_AUTOFS_FS is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_FUSE_FS is not set
+
+#
+# CD-ROM/DVD Filesystems
+#
+# CONFIG_ISO9660_FS is not set
+# CONFIG_UDF_FS is not set
+
+#
+# DOS/FAT/NT Filesystems
+#
+# CONFIG_MSDOS_FS is not set
+# CONFIG_VFAT_FS is not set
+# CONFIG_NTFS_FS is not set
+
+#
+# Pseudo filesystems
+#
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+CONFIG_SYSFS=y
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_CONFIGFS_FS is not set
+
+#
+# Miscellaneous filesystems
+#
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_HFS_FS is not set
+# CONFIG_HFSPLUS_FS is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_YAFFS_FS is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_CRAMFS=y
+# CONFIG_VXFS_FS is not set
+# CONFIG_MINIX_FS is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_SYSV_FS is not set
+# CONFIG_UFS_FS is not set
+CONFIG_NETWORK_FILESYSTEMS=y
+CONFIG_NFS_FS=y
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+# CONFIG_NFS_V4 is not set
+# CONFIG_NFSD is not set
+CONFIG_ROOT_NFS=y
+CONFIG_LOCKD=y
+CONFIG_LOCKD_V4=y
+CONFIG_NFS_COMMON=y
+CONFIG_SUNRPC=y
+# CONFIG_SUNRPC_BIND34 is not set
+# CONFIG_RPCSEC_GSS_KRB5 is not set
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_CIFS is not set
+# CONFIG_NCP_FS is not set
+# CONFIG_CODA_FS is not set
+# CONFIG_AFS_FS is not set
+
+#
+# Partition Types
+#
+# CONFIG_PARTITION_ADVANCED is not set
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_NLS is not set
+# CONFIG_DLM is not set
+
+#
+# Library routines
+#
+CONFIG_BITREVERSE=y
+# CONFIG_GENERIC_FIND_FIRST_BIT is not set
+# CONFIG_CRC_CCITT is not set
+# CONFIG_CRC16 is not set
+# CONFIG_CRC_ITU_T is not set
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+# CONFIG_LIBCRC32C is not set
+CONFIG_ZLIB_INFLATE=y
+CONFIG_PLIST=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT=y
+CONFIG_HAS_DMA=y
+CONFIG_HAVE_LMB=y
+
+#
+# Kernel hacking
+#
+# CONFIG_PRINTK_TIME is not set
+CONFIG_ENABLE_WARN_DEPRECATED=y
+CONFIG_ENABLE_MUST_CHECK=y
+CONFIG_FRAME_WARN=1024
+CONFIG_MAGIC_SYSRQ=y
+# CONFIG_UNUSED_SYMBOLS is not set
+CONFIG_DEBUG_FS=y
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_DEBUG_KERNEL=y
+# CONFIG_DEBUG_SHIRQ is not set
+CONFIG_DETECT_SOFTLOCKUP=y
+CONFIG_SCHED_DEBUG=y
+# CONFIG_SCHEDSTATS is not set
+# CONFIG_TIMER_STATS is not set
+# CONFIG_DEBUG_OBJECTS is not set
+# CONFIG_SLUB_DEBUG_ON is not set
+# CONFIG_SLUB_STATS is not set
+# CONFIG_DEBUG_RT_MUTEXES is not set
+# CONFIG_RT_MUTEX_TESTER is not set
+# CONFIG_DEBUG_SPINLOCK is not set
+# CONFIG_DEBUG_MUTEXES is not set
+# CONFIG_DEBUG_SPINLOCK_SLEEP is not set
+# CONFIG_DEBUG_LOCKING_API_SELFTESTS is not set
+# CONFIG_DEBUG_KOBJECT is not set
+CONFIG_DEBUG_BUGVERBOSE=y
+# CONFIG_DEBUG_INFO is not set
+# CONFIG_DEBUG_VM is not set
+# CONFIG_DEBUG_WRITECOUNT is not set
+# CONFIG_DEBUG_LIST is not set
+# CONFIG_DEBUG_SG is not set
+# CONFIG_BOOT_PRINTK_DELAY is not set
+# CONFIG_RCU_TORTURE_TEST is not set
+# CONFIG_BACKTRACE_SELF_TEST is not set
+# CONFIG_FAULT_INJECTION is not set
+# CONFIG_SAMPLES is not set
+# CONFIG_DEBUG_STACKOVERFLOW is not set
+# CONFIG_DEBUG_STACK_USAGE is not set
+# CONFIG_DEBUG_PAGEALLOC is not set
+# CONFIG_DEBUGGER is not set
+# CONFIG_IRQSTACKS is not set
+# CONFIG_VIRQ_DEBUG is not set
+# CONFIG_BDI_SWITCH is not set
+# CONFIG_PPC_EARLY_DEBUG is not set
+
+#
+# Security options
+#
+# CONFIG_KEYS is not set
+# CONFIG_SECURITY is not set
+# CONFIG_SECURITY_FILE_CAPABILITIES is not set
+CONFIG_CRYPTO=y
+
+#
+# Crypto core or helper
+#
+CONFIG_CRYPTO_ALGAPI=y
+CONFIG_CRYPTO_BLKCIPHER=y
+CONFIG_CRYPTO_MANAGER=y
+# CONFIG_CRYPTO_GF128MUL is not set
+# CONFIG_CRYPTO_NULL is not set
+# CONFIG_CRYPTO_CRYPTD is not set
+# CONFIG_CRYPTO_AUTHENC is not set
+# CONFIG_CRYPTO_TEST is not set
+
+#
+# Authenticated Encryption with Associated Data
+#
+# CONFIG_CRYPTO_CCM is not set
+# CONFIG_CRYPTO_GCM is not set
+# CONFIG_CRYPTO_SEQIV is not set
+
+#
+# Block modes
+#
+CONFIG_CRYPTO_CBC=y
+# CONFIG_CRYPTO_CTR is not set
+# CONFIG_CRYPTO_CTS is not set
+CONFIG_CRYPTO_ECB=y
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_PCBC=y
+# CONFIG_CRYPTO_XTS is not set
+
+#
+# Hash modes
+#
+# CONFIG_CRYPTO_HMAC is not set
+# CONFIG_CRYPTO_XCBC is not set
+
+#
+# Digest
+#
+# CONFIG_CRYPTO_CRC32C is not set
+# CONFIG_CRYPTO_MD4 is not set
+CONFIG_CRYPTO_MD5=y
+# CONFIG_CRYPTO_MICHAEL_MIC is not set
+# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA256 is not set
+# CONFIG_CRYPTO_SHA512 is not set
+# CONFIG_CRYPTO_TGR192 is not set
+# CONFIG_CRYPTO_WP512 is not set
+
+#
+# Ciphers
+#
+# CONFIG_CRYPTO_AES is not set
+# CONFIG_CRYPTO_ANUBIS is not set
+# CONFIG_CRYPTO_ARC4 is not set
+# CONFIG_CRYPTO_BLOWFISH is not set
+# CONFIG_CRYPTO_CAMELLIA is not set
+# CONFIG_CRYPTO_CAST5 is not set
+# CONFIG_CRYPTO_CAST6 is not set
+CONFIG_CRYPTO_DES=y
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_KHAZAD is not set
+# CONFIG_CRYPTO_SALSA20 is not set
+# CONFIG_CRYPTO_SEED is not set
+# CONFIG_CRYPTO_SERPENT is not set
+# CONFIG_CRYPTO_TEA is not set
+# CONFIG_CRYPTO_TWOFISH is not set
+
+#
+# Compression
+#
+# CONFIG_CRYPTO_DEFLATE is not set
+# CONFIG_CRYPTO_LZO is not set
+CONFIG_CRYPTO_HW=y
+# CONFIG_CRYPTO_DEV_HIFN_795X is not set
+# CONFIG_PPC_CLOCK is not set
+# CONFIG_VIRTUALIZATION is not set
* Reserve to the end of the FWNMI area, see head_64.S */
#define KDUMP_RESERVE_LIMIT 0x10000 /* 64K */
+/*
+ * Used to differentiate between relocatable kdump kernel and other
+ * kernels
+ */
+#define KDUMP_SIGNATURE 0xfeed1234
+
#ifdef CONFIG_CRASH_DUMP
#define KDUMP_TRAMPOLINE_START 0x0100
#endif /* CONFIG_CRASH_DUMP */
#ifndef __ASSEMBLY__
-#ifdef CONFIG_CRASH_DUMP
+extern unsigned long __kdump_flag;
+
+#if defined(CONFIG_CRASH_DUMP) && !defined(CONFIG_RELOCATABLE)
extern void reserve_kdump_trampoline(void);
extern void setup_kdump_trampoline(void);
-
-#else /* !CONFIG_CRASH_DUMP */
-
+#else
+/* !CRASH_DUMP || RELOCATABLE */
static inline void reserve_kdump_trampoline(void) { ; }
static inline void setup_kdump_trampoline(void) { ; }
+#endif
-#endif /* CONFIG_CRASH_DUMP */
#endif /* __ASSEMBLY__ */
#endif /* __PPC64_KDUMP_H */
#if defined(CONFIG_RELOCATABLE)
#ifndef __ASSEMBLY__
+
extern phys_addr_t memstart_addr;
extern phys_addr_t kernstart_addr;
#endif
.machine_check = machine_check_4xx,
.platform = "ppc405",
},
+ {
+ /* 405EZ */
+ .pvr_mask = 0xffff0000,
+ .pvr_value = 0x41510000,
+ .cpu_name = "405EZ",
+ .cpu_features = CPU_FTRS_40X,
+ .cpu_user_features = PPC_FEATURE_32 |
+ PPC_FEATURE_HAS_MMU | PPC_FEATURE_HAS_4xxMAC,
+ .icache_bsize = 32,
+ .dcache_bsize = 32,
+ .machine_check = machine_check_4xx,
+ .platform = "ppc405",
+ },
{ /* default match */
.pvr_mask = 0x00000000,
.pvr_value = 0x00000000,
/* Stores the physical address of elf header of crash image. */
unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX;
+#ifndef CONFIG_RELOCATABLE
void __init reserve_kdump_trampoline(void)
{
lmb_reserve(0, KDUMP_RESERVE_LIMIT);
DBG(" <- setup_kdump_trampoline()\n");
}
+#endif /* CONFIG_RELOCATABLE */
/*
* Note: elfcorehdr_addr is not just limited to vmcore. It is also used by
__secondary_hold_acknowledge:
.llong 0x0
+ /* This flag is set by purgatory if we should be a kdump kernel. */
+ /* Do not move this variable as purgatory knows about it. */
+ .globl __kdump_flag
+__kdump_flag:
+ .llong 0x0
+
#ifdef CONFIG_PPC_ISERIES
/*
* At offset 0x20, there is a pointer to iSeries LPAR data.
/* process relocations for the final address of the kernel */
lis r25,PAGE_OFFSET@highest /* compute virtual base of kernel */
sldi r25,r25,32
- mr r3,r25
+#ifdef CONFIG_CRASH_DUMP
+ ld r7,__kdump_flag-_stext(r26)
+ cmpldi cr0,r7,1 /* kdump kernel ? - stay where we are */
+ bne 1f
+ add r25,r25,r26
+#endif
+1: mr r3,r25
bl .relocate
#endif
li r3,0 /* target addr */
mr. r4,r26 /* In some cases the loader may */
beq 9f /* have already put us at zero */
- lis r5,(copy_to_here - _stext)@ha
- addi r5,r5,(copy_to_here - _stext)@l /* # bytes of memory to copy */
li r6,0x100 /* Start offset, the first 0x100 */
/* bytes were copied earlier. */
+#ifdef CONFIG_CRASH_DUMP
+/*
+ * Check if the kernel has to be running as relocatable kernel based on the
+ * variable __kdump_flag, if it is set the kernel is treated as relocatable
+ * kernel, otherwise it will be moved to PHYSICAL_START
+ */
+ ld r7,__kdump_flag-_stext(r26)
+ cmpldi cr0,r7,1
+ bne 3f
+
+ li r5,__end_interrupts - _stext /* just copy interrupts */
+ b 5f
+3:
+#endif
+ lis r5,(copy_to_here - _stext)@ha
+ addi r5,r5,(copy_to_here - _stext)@l /* # bytes of memory to copy */
+
bl .copy_and_flush /* copy the first n bytes */
/* this includes the code being */
/* executed here. */
mtctr r8
bctr
+p_end: .llong _end - _stext
+
4: /* Now copy the rest of the kernel up to _end */
addis r5,r26,(p_end - _stext)@ha
ld r5,(p_end - _stext)@l(r5) /* get _end */
- bl .copy_and_flush /* copy the rest */
+5: bl .copy_and_flush /* copy the rest */
9: b .start_here_multiplatform
-p_end: .llong _end - _stext
-
/*
* Copy routine used to copy the kernel to start at physical address 0
* and flush and invalidate the caches as needed.
spin_unlock_irqrestore(&(tbl->it_lock), flags);
}
+static void iommu_table_clear(struct iommu_table *tbl)
+{
+ if (!__kdump_flag) {
+ /* Clear the table in case firmware left allocations in it */
+ ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
+ return;
+ }
+
+#ifdef CONFIG_CRASH_DUMP
+ if (ppc_md.tce_get) {
+ unsigned long index, tceval, tcecount = 0;
+
+ /* Reserve the existing mappings left by the first kernel. */
+ for (index = 0; index < tbl->it_size; index++) {
+ tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
+ /*
+ * Freed TCE entry contains 0x7fffffffffffffff on JS20
+ */
+ if (tceval && (tceval != 0x7fffffffffffffffUL)) {
+ __set_bit(index, tbl->it_map);
+ tcecount++;
+ }
+ }
+
+ if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
+ printk(KERN_WARNING "TCE table is full; freeing ");
+ printk(KERN_WARNING "%d entries for the kdump boot\n",
+ KDUMP_MIN_TCE_ENTRIES);
+ for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
+ index < tbl->it_size; index++)
+ __clear_bit(index, tbl->it_map);
+ }
+ }
+#endif
+}
+
/*
* Build a iommu_table structure. This contains a bit map which
* is used to manage allocation of the tce space.
tbl->it_largehint = tbl->it_halfpoint;
spin_lock_init(&tbl->it_lock);
-#ifdef CONFIG_CRASH_DUMP
- if (ppc_md.tce_get) {
- unsigned long index;
- unsigned long tceval;
- unsigned long tcecount = 0;
-
- /*
- * Reserve the existing mappings left by the first kernel.
- */
- for (index = 0; index < tbl->it_size; index++) {
- tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
- /*
- * Freed TCE entry contains 0x7fffffffffffffff on JS20
- */
- if (tceval && (tceval != 0x7fffffffffffffffUL)) {
- __set_bit(index, tbl->it_map);
- tcecount++;
- }
- }
- if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
- printk(KERN_WARNING "TCE table is full; ");
- printk(KERN_WARNING "freeing %d entries for the kdump boot\n",
- KDUMP_MIN_TCE_ENTRIES);
- for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
- index < tbl->it_size; index++)
- __clear_bit(index, tbl->it_map);
- }
- }
-#else
- /* Clear the hardware table in case firmware left allocations in it */
- ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
-#endif
+ iommu_table_clear(tbl);
if (!welcomed) {
printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n",
crash_size = crashk_res.end - crashk_res.start + 1;
+#ifndef CONFIG_RELOCATABLE
if (crashk_res.start != KDUMP_KERNELBASE)
printk("Crash kernel location must be 0x%x\n",
KDUMP_KERNELBASE);
crashk_res.start = KDUMP_KERNELBASE;
+#endif
crash_size = PAGE_ALIGN(crash_size);
crashk_res.end = crashk_res.start + crash_size - 1;
/* Our assembly helper, in kexec_stub.S */
extern NORET_TYPE void kexec_sequence(void *newstack, unsigned long start,
void *image, void *control,
- void (*clear_all)(void)) ATTRIB_NORET;
+ void (*clear_all)(void),
+ unsigned long kdump_flag) ATTRIB_NORET;
/* too late to fail here */
void default_machine_kexec(struct kimage *image)
{
+ unsigned long kdump_flag = 0;
+
/* prepare control code if any */
/*
* using debugger IPI.
*/
- if (crashing_cpu == -1)
- kexec_prepare_cpus();
+ if (crashing_cpu == -1)
+ kexec_prepare_cpus();
+ else
+ kdump_flag = KDUMP_SIGNATURE;
/* switch to a staticly allocated stack. Based on irq stack code.
* XXX: the task struct will likely be invalid once we do the copy!
*/
kexec_sequence(&kexec_stack, image->start, image,
page_address(image->control_code_page),
- ppc_md.hpte_clear_all);
+ ppc_md.hpte_clear_all, kdump_flag);
/* NOTREACHED */
}
static void __init export_htab_values(void)
{
struct device_node *node;
+ struct property *prop;
node = of_find_node_by_path("/chosen");
if (!node)
return;
+ /* remove any stale propertys so ours can be found */
+ prop = of_find_property(node, kernel_end_prop.name, NULL);
+ if (prop)
+ prom_remove_property(node, prop);
+ prop = of_find_property(node, htab_base_prop.name, NULL);
+ if (prop)
+ prom_remove_property(node, prop);
+ prop = of_find_property(node, htab_size_prop.name, NULL);
+ if (prop)
+ prom_remove_property(node, prop);
+
+ /* information needed by userspace when using default_machine_kexec */
kernel_end = __pa(_end);
prom_add_property(node, &kernel_end_prop);
/*
- * kexec_sequence(newstack, start, image, control, clear_all())
+ * kexec_sequence(newstack, start, image, control, clear_all(), kdump_flag)
*
* does the grungy work with stack switching and real mode switches
* also does simple calls to other code
+ *
+ * kdump_flag says whether the next kernel should be a kdump kernel.
*/
_GLOBAL(kexec_sequence)
mr r29,r5 /* image (virt) */
mr r28,r6 /* control, unused */
mr r27,r7 /* clear_all() fn desc */
- mr r26,r8 /* spare */
+ mr r26,r8 /* kdump flag */
lhz r25,PACAHWCPUID(r13) /* get our phys cpu from paca */
/* disable interrupts, we are overwriting kernel data next */
mr r4,r30 # start, aka phys mem offset
mtlr 4
li r5,0
- blr /* image->start(physid, image->start, 0); */
+ mr r6,r26 /* kdump_flag */
+ blr /* image->start(physid, image->start, 0, kdump_flag); */
#endif /* CONFIG_KEXEC */
pr_debug(" -> mapping phys %llx\n", (unsigned long long)offset);
vma->vm_pgoff = offset >> PAGE_SHIFT;
- vma->vm_page_prot |= _PAGE_NO_CACHE | _PAGE_GUARDED;
+ vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
+ | _PAGE_NO_CACHE | _PAGE_GUARDED);
return remap_pfn_range(vma, vma->vm_start, vma->vm_pgoff,
vma->vm_end - vma->vm_start,
vma->vm_page_prot);
return call_prom("interpret", 1, 1, (u32)(unsigned long) cmd);
}
-/* We can't use the standard versions because of RELOC headaches. */
-#define isxdigit(c) (('0' <= (c) && (c) <= '9') \
- || ('a' <= (c) && (c) <= 'f') \
- || ('A' <= (c) && (c) <= 'F'))
-
-#define isdigit(c) ('0' <= (c) && (c) <= '9')
-#define islower(c) ('a' <= (c) && (c) <= 'z')
-#define toupper(c) (islower(c) ? ((c) - 'a' + 'A') : (c))
-
-unsigned long prom_strtoul(const char *cp, const char **endp)
-{
- unsigned long result = 0, base = 10, value;
-
- if (*cp == '0') {
- base = 8;
- cp++;
- if (toupper(*cp) == 'X') {
- cp++;
- base = 16;
- }
- }
-
- while (isxdigit(*cp) &&
- (value = isdigit(*cp) ? *cp - '0' : toupper(*cp) - 'A' + 10) < base) {
- result = result * base + value;
- cp++;
- }
-
- if (endp)
- *endp = cp;
-
- return result;
-}
-
-unsigned long prom_memparse(const char *ptr, const char **retptr)
-{
- unsigned long ret = prom_strtoul(ptr, retptr);
- int shift = 0;
-
- /*
- * We can't use a switch here because GCC *may* generate a
- * jump table which won't work, because we're not running at
- * the address we're linked at.
- */
- if ('G' == **retptr || 'g' == **retptr)
- shift = 30;
-
- if ('M' == **retptr || 'm' == **retptr)
- shift = 20;
-
- if ('K' == **retptr || 'k' == **retptr)
- shift = 10;
-
- if (shift) {
- ret <<= shift;
- (*retptr)++;
- }
-
- return ret;
-}
-
/*
* Early parsing of the command line passed to the kernel, used for
* "mem=x" and the options that affect the iommu
_end enter_prom memcpy memset reloc_offset __secondary_hold
__secondary_hold_acknowledge __secondary_hold_spinloop __start
strcmp strcpy strlcpy strlen strncmp strstr logo_linux_clut224
-reloc_got2 kernstart_addr"
+reloc_got2 kernstart_addr memstart_addr"
NM="$1"
OBJ="$2"
#include <asm/mmu.h>
#include <asm/xmon.h>
#include <asm/cputhreads.h>
+#include <mm/mmu_decl.h>
#include "setup.h"
if (ppc_md.show_cpuinfo != NULL)
ppc_md.show_cpuinfo(m);
+#ifdef CONFIG_PPC32
+ /* Display the amount of memory */
+ seq_printf(m, "Memory\t\t: %d MB\n",
+ (unsigned int)(total_memory / (1024 * 1024)));
+#endif
+
return 0;
}
else
for (i = 0; i < 32 ; i++)
current->thread.fpr[i][TS_VSRLOWOFFSET] = 0;
-
-#else
#endif
return err;
}
speed = (clock / prescaler) / (divisor * 16);
/* sanity check */
- if (speed < 0 || speed > (clock / 16))
+ if (speed > (clock / 16))
speed = 9600;
return speed;
printk(KERN_INFO "Huge page(16GB) memory: "
"addr = 0x%lX size = 0x%lX pages = %d\n",
phys_addr, block_size, expected_pages);
- lmb_reserve(phys_addr, block_size * expected_pages);
- add_gpage(phys_addr, block_size, expected_pages);
+ if (phys_addr + (16 * GB) <= lmb_end_of_DRAM()) {
+ lmb_reserve(phys_addr, block_size * expected_pages);
+ add_gpage(phys_addr, block_size, expected_pages);
+ }
return 0;
}
#endif /* CONFIG_HUGETLB_PAGE */
/*
* get_node_active_region - Return active region containing start_pfn
+ * Active range returned is empty if none found.
* @start_pfn: The page to return the region for.
* @node_ar: Returned set to the active region containing start_pfn
*/
node_ar->nid = nid;
node_ar->start_pfn = start_pfn;
+ node_ar->end_pfn = start_pfn;
work_with_active_regions(nid, get_active_region_work_fn, node_ar);
}
/*
* We use lmb_end_of_DRAM() in here instead of memory_limit because
* we've already adjusted it for the limit and it takes care of
- * having memory holes below the limit.
+ * having memory holes below the limit. Also, in the case of
+ * iommu_is_off, memory_limit is not set but is implicitly enforced.
*/
- if (! memory_limit)
- return size;
-
if (start + size <= lmb_end_of_DRAM())
return size;
struct node_active_region node_ar;
get_node_active_region(start_pfn, &node_ar);
- while (start_pfn < end_pfn) {
+ while (start_pfn < end_pfn &&
+ node_ar.start_pfn < node_ar.end_pfn) {
+ unsigned long reserve_size = size;
/*
* if reserved region extends past active region
* then trim size to active region
*/
if (end_pfn > node_ar.end_pfn)
- size = (node_ar.end_pfn << PAGE_SHIFT)
+ reserve_size = (node_ar.end_pfn << PAGE_SHIFT)
- (start_pfn << PAGE_SHIFT);
- dbg("reserve_bootmem %lx %lx nid=%d\n", physbase, size,
- node_ar.nid);
+ dbg("reserve_bootmem %lx %lx nid=%d\n", physbase,
+ reserve_size, node_ar.nid);
reserve_bootmem_node(NODE_DATA(node_ar.nid), physbase,
- size, BOOTMEM_DEFAULT);
+ reserve_size, BOOTMEM_DEFAULT);
/*
* if reserved region is contained in the active region
* then done.
*/
start_pfn = node_ar.end_pfn;
physbase = start_pfn << PAGE_SHIFT;
+ size = size - reserve_size;
get_node_active_region(start_pfn, &node_ar);
}
#define SKIP_GENERIC_SYNC 0
#define SYNC_START_ERROR -1
#define DO_GENERIC_SYNC 1
+#define SPUS_PER_NODE 8
+#define DEFAULT_TIMER_EXPIRE (HZ / 10)
+
+extern struct delayed_work spu_work;
+extern int spu_prof_running;
struct spu_overlay_info { /* map of sections within an SPU overlay */
unsigned int vma; /* SPU virtual memory address from elf */
};
+struct spu_buffer {
+ int last_guard_val;
+ int ctx_sw_seen;
+ unsigned long *buff;
+ unsigned int head, tail;
+};
+
+
/* The three functions below are for maintaining and accessing
* the vma-to-fileoffset map.
*/
static u32 *samples;
-static int spu_prof_running;
+int spu_prof_running;
static unsigned int profiling_interval;
#define NUM_SPU_BITS_TRBUF 16
#define SPUS_PER_TB_ENTRY 4
-#define SPUS_PER_NODE 8
#define SPU_PC_MASK 0xFFFF
spu_prof_running = 1;
hrtimer_start(&timer, kt, HRTIMER_MODE_REL);
+ schedule_delayed_work(&spu_work, DEFAULT_TIMER_EXPIRE);
return 0;
}
static DEFINE_SPINLOCK(cache_lock);
static int num_spu_nodes;
int spu_prof_num_nodes;
-int last_guard_val[MAX_NUMNODES * 8];
+
+struct spu_buffer spu_buff[MAX_NUMNODES * SPUS_PER_NODE];
+struct delayed_work spu_work;
+static unsigned max_spu_buff;
+
+static void spu_buff_add(unsigned long int value, int spu)
+{
+ /* spu buff is a circular buffer. Add entries to the
+ * head. Head is the index to store the next value.
+ * The buffer is full when there is one available entry
+ * in the queue, i.e. head and tail can't be equal.
+ * That way we can tell the difference between the
+ * buffer being full versus empty.
+ *
+ * ASSUPTION: the buffer_lock is held when this function
+ * is called to lock the buffer, head and tail.
+ */
+ int full = 1;
+
+ if (spu_buff[spu].head >= spu_buff[spu].tail) {
+ if ((spu_buff[spu].head - spu_buff[spu].tail)
+ < (max_spu_buff - 1))
+ full = 0;
+
+ } else if (spu_buff[spu].tail > spu_buff[spu].head) {
+ if ((spu_buff[spu].tail - spu_buff[spu].head)
+ > 1)
+ full = 0;
+ }
+
+ if (!full) {
+ spu_buff[spu].buff[spu_buff[spu].head] = value;
+ spu_buff[spu].head++;
+
+ if (spu_buff[spu].head >= max_spu_buff)
+ spu_buff[spu].head = 0;
+ } else {
+ /* From the user's perspective make the SPU buffer
+ * size management/overflow look like we are using
+ * per cpu buffers. The user uses the same
+ * per cpu parameter to adjust the SPU buffer size.
+ * Increment the sample_lost_overflow to inform
+ * the user the buffer size needs to be increased.
+ */
+ oprofile_cpu_buffer_inc_smpl_lost();
+ }
+}
+
+/* This function copies the per SPU buffers to the
+ * OProfile kernel buffer.
+ */
+void sync_spu_buff(void)
+{
+ int spu;
+ unsigned long flags;
+ int curr_head;
+
+ for (spu = 0; spu < num_spu_nodes; spu++) {
+ /* In case there was an issue and the buffer didn't
+ * get created skip it.
+ */
+ if (spu_buff[spu].buff == NULL)
+ continue;
+
+ /* Hold the lock to make sure the head/tail
+ * doesn't change while spu_buff_add() is
+ * deciding if the buffer is full or not.
+ * Being a little paranoid.
+ */
+ spin_lock_irqsave(&buffer_lock, flags);
+ curr_head = spu_buff[spu].head;
+ spin_unlock_irqrestore(&buffer_lock, flags);
+
+ /* Transfer the current contents to the kernel buffer.
+ * data can still be added to the head of the buffer.
+ */
+ oprofile_put_buff(spu_buff[spu].buff,
+ spu_buff[spu].tail,
+ curr_head, max_spu_buff);
+
+ spin_lock_irqsave(&buffer_lock, flags);
+ spu_buff[spu].tail = curr_head;
+ spin_unlock_irqrestore(&buffer_lock, flags);
+ }
+
+}
+
+static void wq_sync_spu_buff(struct work_struct *work)
+{
+ /* move data from spu buffers to kernel buffer */
+ sync_spu_buff();
+
+ /* only reschedule if profiling is not done */
+ if (spu_prof_running)
+ schedule_delayed_work(&spu_work, DEFAULT_TIMER_EXPIRE);
+}
/* Container for caching information about an active SPU task. */
struct cached_info {
/* Record context info in event buffer */
spin_lock_irqsave(&buffer_lock, flags);
- add_event_entry(ESCAPE_CODE);
- add_event_entry(SPU_CTX_SWITCH_CODE);
- add_event_entry(spu->number);
- add_event_entry(spu->pid);
- add_event_entry(spu->tgid);
- add_event_entry(app_dcookie);
- add_event_entry(spu_cookie);
- add_event_entry(offset);
+ spu_buff_add(ESCAPE_CODE, spu->number);
+ spu_buff_add(SPU_CTX_SWITCH_CODE, spu->number);
+ spu_buff_add(spu->number, spu->number);
+ spu_buff_add(spu->pid, spu->number);
+ spu_buff_add(spu->tgid, spu->number);
+ spu_buff_add(app_dcookie, spu->number);
+ spu_buff_add(spu_cookie, spu->number);
+ spu_buff_add(offset, spu->number);
+
+ /* Set flag to indicate SPU PC data can now be written out. If
+ * the SPU program counter data is seen before an SPU context
+ * record is seen, the postprocessing will fail.
+ */
+ spu_buff[spu->number].ctx_sw_seen = 1;
+
spin_unlock_irqrestore(&buffer_lock, flags);
smp_wmb(); /* insure spu event buffer updates are written */
/* don't want entries intermingled... */
return nodes;
}
+static int oprofile_spu_buff_create(void)
+{
+ int spu;
+
+ max_spu_buff = oprofile_get_cpu_buffer_size();
+
+ for (spu = 0; spu < num_spu_nodes; spu++) {
+ /* create circular buffers to store the data in.
+ * use locks to manage accessing the buffers
+ */
+ spu_buff[spu].head = 0;
+ spu_buff[spu].tail = 0;
+
+ /*
+ * Create a buffer for each SPU. Can't reliably
+ * create a single buffer for all spus due to not
+ * enough contiguous kernel memory.
+ */
+
+ spu_buff[spu].buff = kzalloc((max_spu_buff
+ * sizeof(unsigned long)),
+ GFP_KERNEL);
+
+ if (!spu_buff[spu].buff) {
+ printk(KERN_ERR "SPU_PROF: "
+ "%s, line %d: oprofile_spu_buff_create "
+ "failed to allocate spu buffer %d.\n",
+ __func__, __LINE__, spu);
+
+ /* release the spu buffers that have been allocated */
+ while (spu >= 0) {
+ kfree(spu_buff[spu].buff);
+ spu_buff[spu].buff = 0;
+ spu--;
+ }
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
/* The main purpose of this function is to synchronize
* OProfile with SPUFS by registering to be notified of
* SPU task switches.
*/
int spu_sync_start(void)
{
- int k;
+ int spu;
int ret = SKIP_GENERIC_SYNC;
int register_ret;
unsigned long flags = 0;
spu_prof_num_nodes = number_of_online_nodes();
num_spu_nodes = spu_prof_num_nodes * 8;
+ INIT_DELAYED_WORK(&spu_work, wq_sync_spu_buff);
+
+ /* create buffer for storing the SPU data to put in
+ * the kernel buffer.
+ */
+ ret = oprofile_spu_buff_create();
+ if (ret)
+ goto out;
spin_lock_irqsave(&buffer_lock, flags);
- add_event_entry(ESCAPE_CODE);
- add_event_entry(SPU_PROFILING_CODE);
- add_event_entry(num_spu_nodes);
+ for (spu = 0; spu < num_spu_nodes; spu++) {
+ spu_buff_add(ESCAPE_CODE, spu);
+ spu_buff_add(SPU_PROFILING_CODE, spu);
+ spu_buff_add(num_spu_nodes, spu);
+ }
spin_unlock_irqrestore(&buffer_lock, flags);
+ for (spu = 0; spu < num_spu_nodes; spu++) {
+ spu_buff[spu].ctx_sw_seen = 0;
+ spu_buff[spu].last_guard_val = 0;
+ }
+
/* Register for SPU events */
register_ret = spu_switch_event_register(&spu_active);
if (register_ret) {
goto out;
}
- for (k = 0; k < (MAX_NUMNODES * 8); k++)
- last_guard_val[k] = 0;
pr_debug("spu_sync_start -- running.\n");
out:
return ret;
* use. We need to discard samples taken during the time
* period which an overlay occurs (i.e., guard value changes).
*/
- if (grd_val && grd_val != last_guard_val[spu_num]) {
- last_guard_val[spu_num] = grd_val;
+ if (grd_val && grd_val != spu_buff[spu_num].last_guard_val) {
+ spu_buff[spu_num].last_guard_val = grd_val;
/* Drop the rest of the samples. */
break;
}
- add_event_entry(file_offset | spu_num_shifted);
+ /* We must ensure that the SPU context switch has been written
+ * out before samples for the SPU. Otherwise, the SPU context
+ * information is not available and the postprocessing of the
+ * SPU PC will fail with no available anonymous map information.
+ */
+ if (spu_buff[spu_num].ctx_sw_seen)
+ spu_buff_add((file_offset | spu_num_shifted),
+ spu_num);
}
spin_unlock(&buffer_lock);
out:
int spu_sync_stop(void)
{
unsigned long flags = 0;
- int ret = spu_switch_event_unregister(&spu_active);
- if (ret) {
+ int ret;
+ int k;
+
+ ret = spu_switch_event_unregister(&spu_active);
+
+ if (ret)
printk(KERN_ERR "SPU_PROF: "
- "%s, line %d: spu_switch_event_unregister returned %d\n",
- __func__, __LINE__, ret);
- goto out;
- }
+ "%s, line %d: spu_switch_event_unregister " \
+ "returned %d\n",
+ __func__, __LINE__, ret);
+
+ /* flush any remaining data in the per SPU buffers */
+ sync_spu_buff();
spin_lock_irqsave(&cache_lock, flags);
ret = release_cached_info(RELEASE_ALL);
spin_unlock_irqrestore(&cache_lock, flags);
-out:
+
+ /* remove scheduled work queue item rather then waiting
+ * for every queued entry to execute. Then flush pending
+ * system wide buffer to event buffer.
+ */
+ cancel_delayed_work(&spu_work);
+
+ for (k = 0; k < num_spu_nodes; k++) {
+ spu_buff[k].ctx_sw_seen = 0;
+
+ /*
+ * spu_sys_buff will be null if there was a problem
+ * allocating the buffer. Only delete if it exists.
+ */
+ kfree(spu_buff[k].buff);
+ spu_buff[k].buff = 0;
+ }
pr_debug("spu_sync_stop -- done.\n");
return ret;
}
-
# help
# This option enables support for the CPCI405 board.
+config ACADIA
+ bool "Acadia"
+ depends on 40x
+ default n
+ select PPC40x_SIMPLE
+ select 405EZ
+ help
+ This option enables support for the AMCC 405EZ Acadia evaluation board.
+
config EP405
bool "EP405/EP405PC"
depends on 40x
help
This option enables support for the EP405/EP405PC boards.
+config HCU4
+ bool "Hcu4"
+ depends on 40x
+ default y
+ select 405GPR
+ help
+ This option enables support for the Nestal Maschinen HCU4 board.
+
config KILAUEA
bool "Kilauea"
depends on 40x
Most Virtex designs should use this unless it needs to do some
special configuration at board probe time.
+config PPC40x_SIMPLE
+ bool "Simple PowerPC 40x board support"
+ depends on 40x
+ default n
+ help
+ This option enables the simple PowerPC 40x platform support.
+
# 40x specific CPU modules, selected based on the board above.
config NP405H
bool
select IBM_NEW_EMAC_EMAC4
select IBM_NEW_EMAC_RGMII
+config 405EZ
+ bool
+ select IBM_NEW_EMAC_NO_FLOW_CTRL
+ select IBM_NEW_EMAC_MAL_CLR_ICINTSTAT
+ select IBM_NEW_EMAC_MAL_COMMON_ERR
+
config 405GPR
bool
select IBM405_ERR77
select IBM405_ERR51
+config PPC4xx_GPIO
+ bool "PPC4xx GPIO support"
+ depends on 40x
+ select ARCH_REQUIRE_GPIOLIB
+ select GENERIC_GPIO
+ help
+ Enable gpiolib support for ppc40x based boards
+
# 40x errata/workaround config symbols, selected by the CPU models above
# All 405-based cores up until the 405GPR and 405EP have this errata.
obj-$(CONFIG_KILAUEA) += kilauea.o
+obj-$(CONFIG_HCU4) += hcu4.o
obj-$(CONFIG_MAKALU) += makalu.o
obj-$(CONFIG_WALNUT) += walnut.o
obj-$(CONFIG_XILINX_VIRTEX_GENERIC_BOARD) += virtex.o
obj-$(CONFIG_EP405) += ep405.o
+obj-$(CONFIG_PPC40x_SIMPLE) += ppc40x_simple.o
--- /dev/null
+/*
+ * Architecture- / platform-specific boot-time initialization code for
+ * IBM PowerPC 4xx based boards. Adapted from original
+ * code by Gary Thomas, Cort Dougan <cort@fsmlabs.com>, and Dan Malek
+ * <dan@net4x.com>.
+ *
+ * Copyright(c) 1999-2000 Grant Erickson <grant@lcse.umn.edu>
+ *
+ * Rewritten and ported to the merged powerpc tree:
+ * Copyright 2007 IBM Corporation
+ * Josh Boyer <jwboyer@linux.vnet.ibm.com>
+ *
+ * 2002 (c) MontaVista, Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/prom.h>
+#include <asm/udbg.h>
+#include <asm/time.h>
+#include <asm/uic.h>
+#include <asm/ppc4xx.h>
+
+static __initdata struct of_device_id hcu4_of_bus[] = {
+ { .compatible = "ibm,plb3", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ {},
+};
+
+static int __init hcu4_device_probe(void)
+{
+ of_platform_bus_probe(NULL, hcu4_of_bus, NULL);
+ return 0;
+}
+machine_device_initcall(hcu4, hcu4_device_probe);
+
+static int __init hcu4_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ if (!of_flat_dt_is_compatible(root, "netstal,hcu4"))
+ return 0;
+
+ return 1;
+}
+
+define_machine(hcu4) {
+ .name = "HCU4",
+ .probe = hcu4_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
--- /dev/null
+/*
+ * Generic PowerPC 40x platform support
+ *
+ * Copyright 2008 IBM Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This implements simple platform support for PowerPC 44x chips. This is
+ * mostly used for eval boards or other simple and "generic" 44x boards. If
+ * your board has custom functions or hardware, then you will likely want to
+ * implement your own board.c file to accommodate it.
+ */
+
+#include <asm/machdep.h>
+#include <asm/pci-bridge.h>
+#include <asm/ppc4xx.h>
+#include <asm/prom.h>
+#include <asm/time.h>
+#include <asm/udbg.h>
+#include <asm/uic.h>
+
+#include <linux/init.h>
+#include <linux/of_platform.h>
+
+static __initdata struct of_device_id ppc40x_of_bus[] = {
+ { .compatible = "ibm,plb3", },
+ { .compatible = "ibm,plb4", },
+ { .compatible = "ibm,opb", },
+ { .compatible = "ibm,ebc", },
+ { .compatible = "simple-bus", },
+ {},
+};
+
+static int __init ppc40x_device_probe(void)
+{
+ of_platform_bus_probe(NULL, ppc40x_of_bus, NULL);
+
+ return 0;
+}
+machine_device_initcall(ppc40x_simple, ppc40x_device_probe);
+
+/* This is the list of boards that can be supported by this simple
+ * platform code. This does _not_ mean the boards are compatible,
+ * as they most certainly are not from a device tree perspective.
+ * However, their differences are handled by the device tree and the
+ * drivers and therefore they don't need custom board support files.
+ *
+ * Again, if your board needs to do things differently then create a
+ * board.c file for it rather than adding it to this list.
+ */
+static char *board[] __initdata = {
+ "amcc,acadia"
+};
+
+static int __init ppc40x_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+ int i = 0;
+
+ for (i = 0; i < ARRAY_SIZE(board); i++) {
+ if (of_flat_dt_is_compatible(root, board[i])) {
+ ppc_pci_flags = PPC_PCI_REASSIGN_ALL_RSRC;
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+define_machine(ppc40x_simple) {
+ .name = "PowerPC 40x Platform",
+ .probe = ppc40x_probe,
+ .progress = udbg_progress,
+ .init_IRQ = uic_init_tree,
+ .get_irq = uic_get_irq,
+ .restart = ppc4xx_reset_system,
+ .calibrate_decr = generic_calibrate_decr,
+};
help
This option enables the simple PowerPC 44x platform support.
+config PPC4xx_GPIO
+ bool "PPC4xx GPIO support"
+ depends on 44x
+ select ARCH_REQUIRE_GPIOLIB
+ select GENERIC_GPIO
+ help
+ Enable gpiolib support for ppc440 based boards
+
# 44x specific CPU modules, selected based on the board above.
config 440EP
bool
out_be32(&xlb->master_pri_enable, 0xff);
out_be32(&xlb->master_priority, 0x11111111);
- /* Disable XLB pipelining
+ /*
+ * Disable XLB pipelining
* (cfr errate 292. We could do this only just before ATA PIO
* transaction and re-enable it afterwards ...)
+ * Not needed on MPC5200B.
*/
- out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
+ if ((mfspr(SPRN_SVR) & MPC5200_SVR_MASK) == MPC5200_SVR)
+ out_be32(&xlb->config, in_be32(&xlb->config) | MPC52xx_XLB_CFG_PLDIS);
iounmap(xlb);
}
static void ksi8560_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void mpc85xx_ads_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void mpc85xx_cds_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static void sbc8548_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void sbc8560_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void stx_gp3_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void tqm85xx_show_cpuinfo(struct seq_file *m)
{
uint pvid, svid, phid1;
- uint memsize = total_memory;
pvid = mfspr(SPRN_PVR);
svid = mfspr(SPRN_SVR);
/* Display cpu Pll setting */
phid1 = mfspr(SPRN_HID1);
seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f));
-
- /* Display the amount of memory */
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static struct of_device_id __initdata of_bus_ids[] = {
static void gef_sbc610_show_cpuinfo(struct seq_file *m)
{
- uint memsize = total_memory;
uint svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: GE Fanuc Intelligent Platforms\n");
seq_printf(m, "FPGA Revision\t: %u\n", gef_sbc610_get_fpga_rev());
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static void __init gef_sbc610_nec_fixup(struct pci_dev *pdev)
static void
mpc86xx_hpcn_show_cpuinfo(struct seq_file *m)
{
- uint memsize = total_memory;
uint svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Freescale Semiconductor\n");
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
static void
sbc8641_show_cpuinfo(struct seq_file *m)
{
- uint memsize = total_memory;
uint svid = mfspr(SPRN_SVR);
seq_printf(m, "Vendor\t\t: Wind River Systems\n");
seq_printf(m, "SVR\t\t: 0x%x\n", svid);
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
}
#include <asm/machdep.h>
#include <asm/rtas.h>
#include <asm/cell-regs.h>
+#include <asm/kdump.h>
#include "ras.h"
int ret = -ENOMEM;
unsigned long addr;
-#ifdef CONFIG_CRASH_DUMP
- rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
-#endif
+ if (__kdump_flag)
+ rtas_call(ptcal_stop_tok, 1, 1, NULL, nid);
area = kmalloc(sizeof(*area), GFP_KERNEL);
if (!area)
#endif
/*
- * The primary thread of each non-boot processor is recorded here before
- * smp init.
+ * The Primary thread of each non-boot processor was started from the OF client
+ * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
*/
static cpumask_t of_spin_map;
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
- if (i % 2 == 0)
- /*
- * Even-numbered logical cpus correspond to
- * primary threads.
- */
+ if (cpu_thread_in_core(i) == 0)
cpu_set(i, of_spin_map);
}
} else {
int ret;
struct spu_context *ctx = file->private_data;
+ /* pre-check for file position: if we'd return EOF, there's no point
+ * causing a deschedule */
+ if (*pos >= sizeof(ctx->csa.lscsa->gprs))
+ return 0;
+
ret = spu_acquire_saved(ctx);
if (ret)
return ret;
static int spufs_switch_log_open(struct inode *inode, struct file *file)
{
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+ int rc;
+
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
- /*
- * We (ab-)use the mapping_lock here because it serves the similar
- * purpose for synchronizing open/close elsewhere. Maybe it should
- * be renamed eventually.
- */
- mutex_lock(&ctx->mapping_lock);
if (ctx->switch_log) {
- spin_lock(&ctx->switch_log->lock);
- ctx->switch_log->head = 0;
- ctx->switch_log->tail = 0;
- spin_unlock(&ctx->switch_log->lock);
- } else {
- /*
- * We allocate the switch log data structures on first open.
- * They will never be free because we assume a context will
- * be traced until it goes away.
- */
- ctx->switch_log = kzalloc(sizeof(struct switch_log) +
- SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
- GFP_KERNEL);
- if (!ctx->switch_log)
- goto out;
- spin_lock_init(&ctx->switch_log->lock);
- init_waitqueue_head(&ctx->switch_log->wait);
+ rc = -EBUSY;
+ goto out;
}
- mutex_unlock(&ctx->mapping_lock);
+
+ ctx->switch_log = kmalloc(sizeof(struct switch_log) +
+ SWITCH_LOG_BUFSIZE * sizeof(struct switch_log_entry),
+ GFP_KERNEL);
+
+ if (!ctx->switch_log) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ ctx->switch_log->head = ctx->switch_log->tail = 0;
+ init_waitqueue_head(&ctx->switch_log->wait);
+ rc = 0;
+
+out:
+ spu_release(ctx);
+ return rc;
+}
+
+static int spufs_switch_log_release(struct inode *inode, struct file *file)
+{
+ struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
+ int rc;
+
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
+
+ kfree(ctx->switch_log);
+ ctx->switch_log = NULL;
+ spu_release(ctx);
return 0;
- out:
- mutex_unlock(&ctx->mapping_lock);
- return -ENOMEM;
}
static int switch_log_sprint(struct spu_context *ctx, char *tbuf, int n)
if (!buf || len < 0)
return -EINVAL;
+ error = spu_acquire(ctx);
+ if (error)
+ return error;
+
while (cnt < len) {
char tbuf[128];
int width;
- if (file->f_flags & O_NONBLOCK) {
- if (spufs_switch_log_used(ctx) <= 0)
- return cnt ? cnt : -EAGAIN;
- } else {
- /* Wait for data in buffer */
- error = wait_event_interruptible(ctx->switch_log->wait,
- spufs_switch_log_used(ctx) > 0);
- if (error)
+ if (spufs_switch_log_used(ctx) == 0) {
+ if (cnt > 0) {
+ /* If there's data ready to go, we can
+ * just return straight away */
+ break;
+
+ } else if (file->f_flags & O_NONBLOCK) {
+ error = -EAGAIN;
break;
- }
- spin_lock(&ctx->switch_log->lock);
- if (ctx->switch_log->head == ctx->switch_log->tail) {
- /* multiple readers race? */
- spin_unlock(&ctx->switch_log->lock);
- continue;
+ } else {
+ /* spufs_wait will drop the mutex and
+ * re-acquire, but since we're in read(), the
+ * file cannot be _released (and so
+ * ctx->switch_log is stable).
+ */
+ error = spufs_wait(ctx->switch_log->wait,
+ spufs_switch_log_used(ctx) > 0);
+
+ /* On error, spufs_wait returns without the
+ * state mutex held */
+ if (error)
+ return error;
+
+ /* We may have had entries read from underneath
+ * us while we dropped the mutex in spufs_wait,
+ * so re-check */
+ if (spufs_switch_log_used(ctx) == 0)
+ continue;
+ }
}
width = switch_log_sprint(ctx, tbuf, sizeof(tbuf));
- if (width < len) {
+ if (width < len)
ctx->switch_log->tail =
(ctx->switch_log->tail + 1) %
SWITCH_LOG_BUFSIZE;
- }
-
- spin_unlock(&ctx->switch_log->lock);
-
- /*
- * If the record is greater than space available return
- * partial buffer (so far)
- */
- if (width >= len)
+ else
+ /* If the record is greater than space available return
+ * partial buffer (so far) */
break;
error = copy_to_user(buf + cnt, tbuf, width);
cnt += width;
}
+ spu_release(ctx);
+
return cnt == 0 ? error : cnt;
}
struct inode *inode = file->f_path.dentry->d_inode;
struct spu_context *ctx = SPUFS_I(inode)->i_ctx;
unsigned int mask = 0;
+ int rc;
poll_wait(file, &ctx->switch_log->wait, wait);
+ rc = spu_acquire(ctx);
+ if (rc)
+ return rc;
+
if (spufs_switch_log_used(ctx) > 0)
mask |= POLLIN;
+ spu_release(ctx);
+
return mask;
}
static const struct file_operations spufs_switch_log_fops = {
- .owner = THIS_MODULE,
- .open = spufs_switch_log_open,
- .read = spufs_switch_log_read,
- .poll = spufs_switch_log_poll,
+ .owner = THIS_MODULE,
+ .open = spufs_switch_log_open,
+ .read = spufs_switch_log_read,
+ .poll = spufs_switch_log_poll,
+ .release = spufs_switch_log_release,
};
+/**
+ * Log a context switch event to a switch log reader.
+ *
+ * Must be called with ctx->state_mutex held.
+ */
void spu_switch_log_notify(struct spu *spu, struct spu_context *ctx,
u32 type, u32 val)
{
if (!ctx->switch_log)
return;
- spin_lock(&ctx->switch_log->lock);
if (spufs_switch_log_avail(ctx) > 1) {
struct switch_log_entry *p;
ctx->switch_log->head =
(ctx->switch_log->head + 1) % SWITCH_LOG_BUFSIZE;
}
- spin_unlock(&ctx->switch_log->lock);
wake_up(&ctx->switch_log->wait);
}
spuctx_switch_state(ctx, SPU_UTIL_IDLE_LOADED);
clear_bit(SPU_SCHED_SPU_RUN, &ctx->sched_flags);
+ spu_switch_log_notify(NULL, ctx, SWITCH_LOG_EXIT, *status);
spu_release(ctx);
if (signal_pending(current))
ret = spu_run_fini(ctx, npc, &status);
spu_yield(ctx);
- spu_switch_log_notify(NULL, ctx, SWITCH_LOG_EXIT, status);
-
if ((status & SPU_STATUS_STOPPED_BY_STOP) &&
(((status >> SPU_STOP_STATUS_SHIFT) & 0x3f00) == 0x2100))
ctx->stats.libassist++;
*/
node = cpu_to_node(raw_smp_processor_id());
for (n = 0; n < MAX_NUMNODES; n++, node++) {
+ /*
+ * "available_spus" counts how many spus are not potentially
+ * going to be used by other affinity gangs whose reference
+ * context is already in place. Although this code seeks to
+ * avoid having affinity gangs with a summed amount of
+ * contexts bigger than the amount of spus in the node,
+ * this may happen sporadically. In this case, available_spus
+ * becomes negative, which is harmless.
+ */
int available_spus;
node = (node < MAX_NUMNODES) ? node : 0;
available_spus = 0;
mutex_lock(&cbe_spu_info[node].list_mutex);
list_for_each_entry(spu, &cbe_spu_info[node].spus, cbe_list) {
- if (spu->ctx && spu->ctx->gang
- && spu->ctx->aff_offset == 0)
- available_spus -=
- (spu->ctx->gang->contexts - 1);
- else
- available_spus++;
+ if (spu->ctx && spu->ctx->gang && !spu->ctx->aff_offset
+ && spu->ctx->gang->aff_ref_spu)
+ available_spus -= spu->ctx->gang->contexts;
+ available_spus++;
}
if (available_spus < ctx->gang->contexts) {
mutex_unlock(&cbe_spu_info[node].list_mutex);
atomic_dec(&cbe_spu_info[spu->node].reserved_spus);
if (ctx->gang)
+ /*
+ * If ctx->gang->aff_sched_count is positive, SPU affinity is
+ * being considered in this gang. Using atomic_dec_if_positive
+ * allow us to skip an explicit check for affinity in this gang
+ */
atomic_dec_if_positive(&ctx->gang->aff_sched_count);
spu_switch_notify(spu, NULL);
};
struct switch_log {
- spinlock_t lock;
wait_queue_head_t wait;
unsigned long head;
unsigned long tail;
static ktime_t sputrace_start;
static unsigned long sputrace_head, sputrace_tail;
static struct sputrace *sputrace_log;
+static int sputrace_logging;
static int sputrace_used(void)
{
char tbuf[128];
int width;
+ /* If we have data ready to return, don't block waiting
+ * for more */
+ if (cnt > 0 && sputrace_used() == 0)
+ break;
+
error = wait_event_interruptible(sputrace_wait,
sputrace_used() > 0);
if (error)
static int sputrace_open(struct inode *inode, struct file *file)
{
+ int rc;
+
spin_lock(&sputrace_lock);
+ if (sputrace_logging) {
+ rc = -EBUSY;
+ goto out;
+ }
+
+ sputrace_logging = 1;
sputrace_head = sputrace_tail = 0;
sputrace_start = ktime_get();
+ rc = 0;
+
+out:
spin_unlock(&sputrace_lock);
+ return rc;
+}
+static int sputrace_release(struct inode *inode, struct file *file)
+{
+ spin_lock(&sputrace_lock);
+ sputrace_logging = 0;
+ spin_unlock(&sputrace_lock);
return 0;
}
static const struct file_operations sputrace_fops = {
- .owner = THIS_MODULE,
- .open = sputrace_open,
- .read = sputrace_read,
+ .owner = THIS_MODULE,
+ .open = sputrace_open,
+ .read = sputrace_read,
+ .release = sputrace_release,
};
static void sputrace_log_item(const char *name, struct spu_context *ctx,
struct spu *spu)
{
spin_lock(&sputrace_lock);
+
+ if (!sputrace_logging) {
+ spin_unlock(&sputrace_lock);
+ return;
+ }
+
if (sputrace_avail() > 1) {
struct sputrace *t = sputrace_log + sputrace_head;
void c2k_show_cpuinfo(struct seq_file *m)
{
- uint memsize = total_memory;
-
seq_printf(m, "Vendor\t\t: GEFanuc\n");
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
seq_printf(m, "coherency\t: %s\n", COHERENCY_SETTING);
}
void prpmc2800_show_cpuinfo(struct seq_file *m)
{
- uint memsize = total_memory;
-
seq_printf(m, "Vendor\t\t: Motorola\n");
- seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING);
}
int ret;
start_pfn = base >> PAGE_SHIFT;
+
+ if (!pfn_valid(start_pfn)) {
+ lmb_remove(base, lmb_size);
+ return 0;
+ }
+
zone = page_zone(pfn_to_page(start_pfn));
/*
#include <asm/tce.h>
#include <asm/ppc-pci.h>
#include <asm/udbg.h>
+#include <asm/kdump.h>
#include "plpar_wrappers.h"
tbl->it_base = (unsigned long)__va(*basep);
-#ifndef CONFIG_CRASH_DUMP
- memset((void *)tbl->it_base, 0, *sizep);
-#endif
+ if (!__kdump_flag)
+ memset((void *)tbl->it_base, 0, *sizep);
tbl->it_busno = phb->bus->number;
/*
- * The primary thread of each non-boot processor is recorded here before
- * smp init.
+ * The Primary thread of each non-boot processor was started from the OF client
+ * interface by prom_hold_cpus and is spinning on secondary_hold_spinloop.
*/
static cpumask_t of_spin_map;
static int smp_pSeries_cpu_bootable(unsigned int nr)
{
/* Special case - we inhibit secondary thread startup
- * during boot if the user requests it. Odd-numbered
- * cpus are assumed to be secondary threads.
+ * during boot if the user requests it.
*/
if (system_state < SYSTEM_RUNNING &&
cpu_has_feature(CPU_FTR_SMT) &&
/* Mark threads which are still spinning in hold loops. */
if (cpu_has_feature(CPU_FTR_SMT)) {
for_each_present_cpu(i) {
- if (i % 2 == 0)
- /*
- * Even-numbered logical cpus correspond to
- * primary threads.
- */
+ if (cpu_thread_in_core(i) == 0)
cpu_set(i, of_spin_map);
}
} else {
ifeq ($(CONFIG_PCI),y)
obj-$(CONFIG_4xx) += ppc4xx_pci.o
endif
+obj-$(CONFIG_PPC4xx_GPIO) += ppc4xx_gpio.o
obj-$(CONFIG_CPM) += cpm_common.o
obj-$(CONFIG_CPM2) += cpm2.o cpm2_pic.o
--- /dev/null
+/*
+ * PPC4xx gpio driver
+ *
+ * Copyright (c) 2008 Harris Corporation
+ * Copyright (c) 2008 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
+ * Copyright (c) MontaVista Software, Inc. 2008.
+ *
+ * Author: Steve Falco <sfalco@harris.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
+#include <linux/types.h>
+
+#define GPIO_MASK(gpio) (0x80000000 >> (gpio))
+#define GPIO_MASK2(gpio) (0xc0000000 >> ((gpio) * 2))
+
+/* Physical GPIO register layout */
+struct ppc4xx_gpio {
+ __be32 or;
+ __be32 tcr;
+ __be32 osrl;
+ __be32 osrh;
+ __be32 tsrl;
+ __be32 tsrh;
+ __be32 odr;
+ __be32 ir;
+ __be32 rr1;
+ __be32 rr2;
+ __be32 rr3;
+ __be32 reserved1;
+ __be32 isr1l;
+ __be32 isr1h;
+ __be32 isr2l;
+ __be32 isr2h;
+ __be32 isr3l;
+ __be32 isr3h;
+};
+
+struct ppc4xx_gpio_chip {
+ struct of_mm_gpio_chip mm_gc;
+ spinlock_t lock;
+};
+
+/*
+ * GPIO LIB API implementation for GPIOs
+ *
+ * There are a maximum of 32 gpios in each gpio controller.
+ */
+
+static inline struct ppc4xx_gpio_chip *
+to_ppc4xx_gpiochip(struct of_mm_gpio_chip *mm_gc)
+{
+ return container_of(mm_gc, struct ppc4xx_gpio_chip, mm_gc);
+}
+
+static int ppc4xx_gpio_get(struct gpio_chip *gc, unsigned int gpio)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+
+ return in_be32(®s->ir) & GPIO_MASK(gpio);
+}
+
+static inline void
+__ppc4xx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+
+ if (val)
+ setbits32(®s->or, GPIO_MASK(gpio));
+ else
+ clrbits32(®s->or, GPIO_MASK(gpio));
+}
+
+static void
+ppc4xx_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ __ppc4xx_gpio_set(gc, gpio, val);
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
+}
+
+static int ppc4xx_gpio_dir_in(struct gpio_chip *gc, unsigned int gpio)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+ struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ /* Disable open-drain function */
+ clrbits32(®s->odr, GPIO_MASK(gpio));
+
+ /* Float the pin */
+ clrbits32(®s->tcr, GPIO_MASK(gpio));
+
+ /* Bits 0-15 use TSRL/OSRL, bits 16-31 use TSRH/OSRH */
+ if (gpio < 16) {
+ clrbits32(®s->osrl, GPIO_MASK2(gpio));
+ clrbits32(®s->tsrl, GPIO_MASK2(gpio));
+ } else {
+ clrbits32(®s->osrh, GPIO_MASK2(gpio));
+ clrbits32(®s->tsrh, GPIO_MASK2(gpio));
+ }
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ return 0;
+}
+
+static int
+ppc4xx_gpio_dir_out(struct gpio_chip *gc, unsigned int gpio, int val)
+{
+ struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
+ struct ppc4xx_gpio_chip *chip = to_ppc4xx_gpiochip(mm_gc);
+ struct ppc4xx_gpio __iomem *regs = mm_gc->regs;
+ unsigned long flags;
+
+ spin_lock_irqsave(&chip->lock, flags);
+
+ /* First set initial value */
+ __ppc4xx_gpio_set(gc, gpio, val);
+
+ /* Disable open-drain function */
+ clrbits32(®s->odr, GPIO_MASK(gpio));
+
+ /* Drive the pin */
+ setbits32(®s->tcr, GPIO_MASK(gpio));
+
+ /* Bits 0-15 use TSRL, bits 16-31 use TSRH */
+ if (gpio < 16) {
+ clrbits32(®s->osrl, GPIO_MASK2(gpio));
+ clrbits32(®s->tsrl, GPIO_MASK2(gpio));
+ } else {
+ clrbits32(®s->osrh, GPIO_MASK2(gpio));
+ clrbits32(®s->tsrh, GPIO_MASK2(gpio));
+ }
+
+ spin_unlock_irqrestore(&chip->lock, flags);
+
+ pr_debug("%s: gpio: %d val: %d\n", __func__, gpio, val);
+
+ return 0;
+}
+
+static int __init ppc4xx_add_gpiochips(void)
+{
+ struct device_node *np;
+
+ for_each_compatible_node(np, NULL, "ibm,ppc4xx-gpio") {
+ int ret;
+ struct ppc4xx_gpio_chip *ppc4xx_gc;
+ struct of_mm_gpio_chip *mm_gc;
+ struct of_gpio_chip *of_gc;
+ struct gpio_chip *gc;
+
+ ppc4xx_gc = kzalloc(sizeof(*ppc4xx_gc), GFP_KERNEL);
+ if (!ppc4xx_gc) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ spin_lock_init(&ppc4xx_gc->lock);
+
+ mm_gc = &ppc4xx_gc->mm_gc;
+ of_gc = &mm_gc->of_gc;
+ gc = &of_gc->gc;
+
+ of_gc->gpio_cells = 2;
+ gc->ngpio = 32;
+ gc->direction_input = ppc4xx_gpio_dir_in;
+ gc->direction_output = ppc4xx_gpio_dir_out;
+ gc->get = ppc4xx_gpio_get;
+ gc->set = ppc4xx_gpio_set;
+
+ ret = of_mm_gpiochip_add(np, mm_gc);
+ if (ret)
+ goto err;
+ continue;
+err:
+ pr_err("%s: registration failed with status %d\n",
+ np->full_name, ret);
+ kfree(ppc4xx_gc);
+ /* try others anyway */
+ }
+ return 0;
+}
+arch_initcall(ppc4xx_add_gpiochips);
/* Programs the physical address of the device table into the IOMMU hardware */
static void __init iommu_set_device_table(struct amd_iommu *iommu)
{
- u32 entry;
+ u64 entry;
BUG_ON(iommu->mmio_base == NULL);
}
#ifdef CONFIG_X86_32
-# define irq_stats(x) (&per_cpu(irq_stat,x))
+# define irq_stats(x) (&per_cpu(irq_stat, x))
#else
# define irq_stats(x) cpu_pda(x)
#endif
if (i == 0) {
seq_printf(p, " ");
for_each_online_cpu(j)
- seq_printf(p, "CPU%-8d",j);
+ seq_printf(p, "CPU%-8d", j);
seq_putc(p, '\n');
}
#include <asm/calgary.h>
#include <asm/amd_iommu.h>
-static int forbid_dac __read_mostly;
-
struct dma_mapping_ops *dma_ops;
EXPORT_SYMBOL(dma_ops);
}
/* Must execute after PCI subsystem */
fs_initcall(pci_iommu_init);
-
-#ifdef CONFIG_PCI
-/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
-
-static __devinit void via_no_dac(struct pci_dev *dev)
-{
- if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
- printk(KERN_INFO "PCI: VIA PCI bridge detected."
- "Disabling DAC.\n");
- forbid_dac = 1;
- }
-}
-DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
-#endif
default XTENSA_VARIANT_FSF
config XTENSA_VARIANT_FSF
- bool "fsf"
+ bool "fsf - default (not generic) configuration"
+
+config XTENSA_VARIANT_DC232B
+ bool "dc232b - Diamond 232L Standard Core Rev.B (LE)"
+ help
+ This variant refers to Tensilica's Diamond 232L Standard core Rev.B (LE).
endchoice
config MMU
# (Use VAR=<xtensa_config> to use another default compiler.)
variant-$(CONFIG_XTENSA_VARIANT_FSF) := fsf
+variant-$(CONFIG_XTENSA_VARIANT_DC232B) := dc232b
variant-$(CONFIG_XTENSA_VARIANT_LINUX_CUSTOM) := custom
VARIANT = $(variant-y)
if (irq >= NR_IRQS) {
printk(KERN_EMERG "%s: cannot handle IRQ %d\n",
- __FUNCTION__, irq);
+ __func__, irq);
}
irq_enter();
*lp = ((struct iss_net_private) {
.device_list = LIST_HEAD_INIT(lp->device_list),
.opened_list = LIST_HEAD_INIT(lp->opened_list),
- .lock = SPIN_LOCK_UNLOCKED,
+ .lock = __SPIN_LOCK_UNLOCKED(lp.lock),
.dev = dev,
.index = index,
//.fd = -1,
source "drivers/usb/Kconfig"
+source "drivers/uwb/Kconfig"
+
source "drivers/mmc/Kconfig"
source "drivers/memstick/Kconfig"
obj-$(CONFIG_VIRTIO) += virtio/
obj-$(CONFIG_REGULATOR) += regulator/
obj-$(CONFIG_STAGING) += staging/
+obj-$(CONFIG_UWB) += uwb/
#ifdef CONFIG_ATA_SFF
INIT_DELAYED_WORK(&ap->port_task, ata_pio_task);
+#else
+ INIT_DELAYED_WORK(&ap->port_task, NULL);
#endif
INIT_DELAYED_WORK(&ap->hotplug_task, ata_scsi_hotplug);
INIT_WORK(&ap->scsi_rescan_task, ata_scsi_dev_rescan);
ata_eh_clear_action(link, dev, ehi, action);
- if (!(ehc->i.flags & ATA_EHI_QUIET))
+ /* About to take EH action, set RECOVERED. Ignore actions on
+ * slave links as master will do them again.
+ */
+ if (!(ehc->i.flags & ATA_EHI_QUIET) && link != ap->slave_link)
ap->pflags |= ATA_PFLAG_RECOVERED;
spin_unlock_irqrestore(ap->lock, flags);
struct ata_eh_context *mehc = &ap->link.eh_context;
struct ata_eh_context *sehc = &ap->slave_link->eh_context;
+ /* transfer control flags from master to slave */
+ sehc->i.flags |= mehc->i.flags & ATA_EHI_TO_SLAVE_MASK;
+
+ /* perform autopsy on the slave link */
ata_eh_link_autopsy(ap->slave_link);
+ /* transfer actions from slave to master and clear slave */
ata_eh_about_to_do(ap->slave_link, NULL, ATA_EH_ALL_ACTIONS);
mehc->i.action |= sehc->i.action;
mehc->i.dev_action[1] |= sehc->i.dev_action[1];
dev->pio_mode = XFER_PIO_0;
dev->flags &= ~ATA_DFLAG_SLEEPING;
- if (ata_phys_link_offline(ata_dev_phys_link(dev)))
- continue;
-
- /* apply class override */
- if (lflags & ATA_LFLAG_ASSUME_ATA)
- classes[dev->devno] = ATA_DEV_ATA;
- else if (lflags & ATA_LFLAG_ASSUME_SEMB)
- classes[dev->devno] = ATA_DEV_SEMB_UNSUP; /* not yet */
+ if (!ata_phys_link_offline(ata_dev_phys_link(dev))) {
+ /* apply class override */
+ if (lflags & ATA_LFLAG_ASSUME_ATA)
+ classes[dev->devno] = ATA_DEV_ATA;
+ else if (lflags & ATA_LFLAG_ASSUME_SEMB)
+ classes[dev->devno] = ATA_DEV_SEMB_UNSUP;
+ } else
+ classes[dev->devno] = ATA_DEV_NONE;
}
/* record current link speed */
*/
void ata_sff_post_internal_cmd(struct ata_queued_cmd *qc)
{
- if (qc->ap->ioaddr.bmdma_addr)
+ struct ata_port *ap = qc->ap;
+ unsigned long flags;
+
+ spin_lock_irqsave(ap->lock, flags);
+
+ ap->hsm_task_state = HSM_ST_IDLE;
+
+ if (ap->ioaddr.bmdma_addr)
ata_bmdma_stop(qc);
+
+ spin_unlock_irqrestore(ap->lock, flags);
}
/**
static int svia_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
static int svia_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
static int svia_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
+static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf);
static void svia_noop_freeze(struct ata_port *ap);
static int vt6420_prereset(struct ata_link *link, unsigned long deadline);
static int vt6421_pata_cable_detect(struct ata_port *ap);
ATA_BMDMA_SHT(DRV_NAME),
};
-static struct ata_port_operations vt6420_sata_ops = {
+static struct ata_port_operations svia_base_ops = {
.inherits = &ata_bmdma_port_ops,
+ .sff_tf_load = svia_tf_load,
+};
+
+static struct ata_port_operations vt6420_sata_ops = {
+ .inherits = &svia_base_ops,
.freeze = svia_noop_freeze,
.prereset = vt6420_prereset,
};
static struct ata_port_operations vt6421_pata_ops = {
- .inherits = &ata_bmdma_port_ops,
+ .inherits = &svia_base_ops,
.cable_detect = vt6421_pata_cable_detect,
.set_piomode = vt6421_set_pio_mode,
.set_dmamode = vt6421_set_dma_mode,
};
static struct ata_port_operations vt6421_sata_ops = {
- .inherits = &ata_bmdma_port_ops,
+ .inherits = &svia_base_ops,
.scr_read = svia_scr_read,
.scr_write = svia_scr_write,
};
return 0;
}
+/**
+ * svia_tf_load - send taskfile registers to host controller
+ * @ap: Port to which output is sent
+ * @tf: ATA taskfile register set
+ *
+ * Outputs ATA taskfile to standard ATA host controller.
+ *
+ * This is to fix the internal bug of via chipsets, which will
+ * reset the device register after changing the IEN bit on ctl
+ * register.
+ */
+static void svia_tf_load(struct ata_port *ap, const struct ata_taskfile *tf)
+{
+ struct ata_taskfile ttf;
+
+ if (tf->ctl != ap->last_ctl) {
+ ttf = *tf;
+ ttf.flags |= ATA_TFLAG_DEVICE;
+ tf = &ttf;
+ }
+ ata_sff_tf_load(ap, tf);
+}
+
static void svia_noop_freeze(struct ata_port *ap)
{
/* Some VIA controllers choke if ATA_NIEN is manipulated in
}
} else {
r = cons_ops[index]->put_chars(vtermnos[index], c, i);
- if (r < 0) {
+ if (r <= 0) {
/* throw away chars on error */
i = 0;
} else if (r > 0) {
if (hp->ops->notifier_del)
hp->ops->notifier_del(hp, hp->data);
+ /* cancel pending tty resize work */
+ cancel_work_sync(&hp->tty_resize);
+
/*
* Chain calls chars_in_buffer() and returns immediately if
* there is no buffered data otherwise sleeps on a wait queue
if (!hp)
return;
+ /* cancel pending tty resize work */
+ cancel_work_sync(&hp->tty_resize);
+
spin_lock_irqsave(&hp->lock, flags);
/*
spin_unlock_irqrestore(&hp->lock, flags);
- if (hp->ops->notifier_del)
- hp->ops->notifier_del(hp, hp->data);
+ if (hp->ops->notifier_hangup)
+ hp->ops->notifier_hangup(hp, hp->data);
while(temp_open_count) {
--temp_open_count;
* Push buffered characters whether they were just recently buffered or waiting
* on a blocked hypervisor. Call this function with hp->lock held.
*/
-static void hvc_push(struct hvc_struct *hp)
+static int hvc_push(struct hvc_struct *hp)
{
int n;
if (n <= 0) {
if (n == 0) {
hp->do_wakeup = 1;
- return;
+ return 0;
}
/* throw away output on error; this happens when
there is no session connected to the vterm. */
memmove(hp->outbuf, hp->outbuf + n, hp->n_outbuf);
else
hp->do_wakeup = 1;
+
+ return n;
}
static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count)
return written;
}
+/**
+ * hvc_set_winsz() - Resize the hvc tty terminal window.
+ * @work: work structure.
+ *
+ * The routine shall not be called within an atomic context because it
+ * might sleep.
+ *
+ * Locking: hp->lock
+ */
+static void hvc_set_winsz(struct work_struct *work)
+{
+ struct hvc_struct *hp;
+ unsigned long hvc_flags;
+ struct tty_struct *tty;
+ struct winsize ws;
+
+ hp = container_of(work, struct hvc_struct, tty_resize);
+ if (!hp)
+ return;
+
+ spin_lock_irqsave(&hp->lock, hvc_flags);
+ if (!hp->tty) {
+ spin_unlock_irqrestore(&hp->lock, hvc_flags);
+ return;
+ }
+ ws = hp->ws;
+ tty = tty_kref_get(hp->tty);
+ spin_unlock_irqrestore(&hp->lock, hvc_flags);
+
+ tty_do_resize(tty, tty, &ws);
+ tty_kref_put(tty);
+}
+
/*
* This is actually a contract between the driver and the tty layer outlining
* how much write room the driver can guarantee will be sent OR BUFFERED. This
char buf[N_INBUF] __ALIGNED__;
unsigned long flags;
int read_total = 0;
+ int written_total = 0;
spin_lock_irqsave(&hp->lock, flags);
/* Push pending writes */
if (hp->n_outbuf > 0)
- hvc_push(hp);
+ written_total = hvc_push(hp);
/* Reschedule us if still some write pending */
- if (hp->n_outbuf > 0)
+ if (hp->n_outbuf > 0) {
poll_mask |= HVC_POLL_WRITE;
+ /* If hvc_push() was not able to write, sleep a few msecs */
+ timeout = (written_total) ? 0 : MIN_TIMEOUT;
+ }
/* No tty attached, just skip */
tty = hp->tty;
}
EXPORT_SYMBOL_GPL(hvc_poll);
+/**
+ * hvc_resize() - Update terminal window size information.
+ * @hp: HVC console pointer
+ * @ws: Terminal window size structure
+ *
+ * Stores the specified window size information in the hvc structure of @hp.
+ * The function schedule the tty resize update.
+ *
+ * Locking: Locking free; the function MUST be called holding hp->lock
+ */
+void hvc_resize(struct hvc_struct *hp, struct winsize ws)
+{
+ if ((hp->ws.ws_row != ws.ws_row) || (hp->ws.ws_col != ws.ws_col)) {
+ hp->ws = ws;
+ schedule_work(&hp->tty_resize);
+ }
+}
+
/*
* This kthread is either polling or interrupt driven. This is determined by
* calling hvc_poll() who determines whether a console adapter support
poll_mask |= HVC_POLL_READ;
if (hvc_kicked)
continue;
- if (poll_mask & HVC_POLL_WRITE) {
- yield();
- continue;
- }
set_current_state(TASK_INTERRUPTIBLE);
if (!hvc_kicked) {
if (poll_mask == 0)
kref_init(&hp->kref);
+ INIT_WORK(&hp->tty_resize, hvc_set_winsz);
spin_lock_init(&hp->lock);
spin_lock(&hvc_structs_lock);
}
EXPORT_SYMBOL_GPL(hvc_alloc);
-int __devexit hvc_remove(struct hvc_struct *hp)
+int hvc_remove(struct hvc_struct *hp)
{
unsigned long flags;
struct tty_struct *tty;
drv->minor_start = HVC_MINOR;
drv->type = TTY_DRIVER_TYPE_SYSTEM;
drv->init_termios = tty_std_termios;
- drv->flags = TTY_DRIVER_REAL_RAW;
+ drv->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_RESET_TERMIOS;
tty_set_operations(drv, &hvc_ops);
/* Always start the kthread because there can be hotplug vty adapters
#ifndef HVC_CONSOLE_H
#define HVC_CONSOLE_H
#include <linux/kref.h>
+#include <linux/tty.h>
/*
* This is the max number of console adapters that can/will be found as
struct hv_ops *ops;
int irq_requested;
int data;
+ struct winsize ws;
+ struct work_struct tty_resize;
struct list_head next;
struct kref kref; /* ref count & hvc_struct lifetime */
};
int (*get_chars)(uint32_t vtermno, char *buf, int count);
int (*put_chars)(uint32_t vtermno, const char *buf, int count);
- /* Callbacks for notification. Called in open and close */
+ /* Callbacks for notification. Called in open, close and hangup */
int (*notifier_add)(struct hvc_struct *hp, int irq);
void (*notifier_del)(struct hvc_struct *hp, int irq);
+ void (*notifier_hangup)(struct hvc_struct *hp, int irq);
};
/* Register a vterm and a slot index for use as a console (console_init) */
extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int data,
struct hv_ops *ops, int outbuf_size);
/* remove a vterm from hvc tty operation (module_exit or hotplug remove) */
-extern int __devexit hvc_remove(struct hvc_struct *hp);
+extern int hvc_remove(struct hvc_struct *hp);
/* data available */
int hvc_poll(struct hvc_struct *hp);
void hvc_kick(void);
+/* Resize hvc tty terminal window */
+extern void hvc_resize(struct hvc_struct *hp, struct winsize ws);
+
/* default notifier for irq based notification */
extern int notifier_add_irq(struct hvc_struct *hp, int data);
extern void notifier_del_irq(struct hvc_struct *hp, int data);
+extern void notifier_hangup_irq(struct hvc_struct *hp, int data);
#if defined(CONFIG_XMON) && defined(CONFIG_SMP)
free_irq(irq, hp);
hp->irq_requested = 0;
}
+
+void notifier_hangup_irq(struct hvc_struct *hp, int irq)
+{
+ notifier_del_irq(hp, irq);
+}
.put_chars = put_chars,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __devinit hvc_vio_probe(struct vio_dev *vdev,
.put_chars = hvc_put_chars,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __devinit hvc_vio_probe(struct vio_dev *vdev,
.put_chars = write_console,
.notifier_add = notifier_add_irq,
.notifier_del = notifier_del_irq,
+ .notifier_hangup = notifier_hangup_irq,
};
static int __init xen_init(void)
spin_lock_irqsave(&port->lock, flags);
if (port->tty)
tty_kref_put(port->tty);
- port->tty = tty;
+ port->tty = tty_kref_get(tty);
spin_unlock_irqrestore(&port->lock, flags);
}
EXPORT_SYMBOL(tty_port_tty_set);
virtio_cons.put_chars = put_chars;
virtio_cons.notifier_add = notifier_add_vio;
virtio_cons.notifier_del = notifier_del_vio;
+ virtio_cons.notifier_hangup = notifier_del_vio;
/* The first argument of hvc_alloc() is the virtual console number, so
* we use zero. The second argument is the parameter for the
This driver provides an in-kernel interface to those GPIOs using
platform-neutral GPIO calls.
+config GPIO_TWL4030
+ tristate "TWL4030, TWL5030, and TPS659x0 GPIOs"
+ depends on TWL4030_CORE
+ help
+ Say yes here to access the GPIO signals of various multi-function
+ power management chips from Texas Instruments.
+
comment "PCI GPIO expanders:"
config GPIO_BT8XX
obj-$(CONFIG_GPIO_MCP23S08) += mcp23s08.o
obj-$(CONFIG_GPIO_PCA953X) += pca953x.o
obj-$(CONFIG_GPIO_PCF857X) += pcf857x.o
+obj-$(CONFIG_GPIO_TWL4030) += twl4030-gpio.o
obj-$(CONFIG_GPIO_BT8XX) += bt8xxgpio.o
--- /dev/null
+/*
+ * twl4030_gpio.c -- access to GPIOs on TWL4030/TPS659x0 chips
+ *
+ * Copyright (C) 2006-2007 Texas Instruments, Inc.
+ * Copyright (C) 2006 MontaVista Software, Inc.
+ *
+ * Code re-arranged and cleaned up by:
+ * Syed Mohammed Khasim <x0khasim@ti.com>
+ *
+ * Initial Code:
+ * Andy Lowe / Nishanth Menon
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/kthread.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * The GPIO "subchip" supports 18 GPIOs which can be configured as
+ * inputs or outputs, with pullups or pulldowns on each pin. Each
+ * GPIO can trigger interrupts on either or both edges.
+ *
+ * GPIO interrupts can be fed to either of two IRQ lines; this is
+ * intended to support multiple hosts.
+ *
+ * There are also two LED pins used sometimes as output-only GPIOs.
+ */
+
+
+static struct gpio_chip twl_gpiochip;
+static int twl4030_gpio_irq_base;
+
+/* genirq interfaces are not available to modules */
+#ifdef MODULE
+#define is_module() true
+#else
+#define is_module() false
+#endif
+
+/* GPIO_CTRL Fields */
+#define MASK_GPIO_CTRL_GPIO0CD1 BIT(0)
+#define MASK_GPIO_CTRL_GPIO1CD2 BIT(1)
+#define MASK_GPIO_CTRL_GPIO_ON BIT(2)
+
+/* Mask for GPIO registers when aggregated into a 32-bit integer */
+#define GPIO_32_MASK 0x0003ffff
+
+/* Data structures */
+static DEFINE_MUTEX(gpio_lock);
+
+/* store usage of each GPIO. - each bit represents one GPIO */
+static unsigned int gpio_usage_count;
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * To configure TWL4030 GPIO module registers
+ */
+static inline int gpio_twl4030_write(u8 address, u8 data)
+{
+ return twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, data, address);
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * LED register offsets (use TWL4030_MODULE_{LED,PWMA,PWMB}))
+ * PWMs A and B are dedicated to LEDs A and B, respectively.
+ */
+
+#define TWL4030_LED_LEDEN 0x0
+
+/* LEDEN bits */
+#define LEDEN_LEDAON BIT(0)
+#define LEDEN_LEDBON BIT(1)
+#define LEDEN_LEDAEXT BIT(2)
+#define LEDEN_LEDBEXT BIT(3)
+#define LEDEN_LEDAPWM BIT(4)
+#define LEDEN_LEDBPWM BIT(5)
+#define LEDEN_PWM_LENGTHA BIT(6)
+#define LEDEN_PWM_LENGTHB BIT(7)
+
+#define TWL4030_PWMx_PWMxON 0x0
+#define TWL4030_PWMx_PWMxOFF 0x1
+
+#define PWMxON_LENGTH BIT(7)
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * To read a TWL4030 GPIO module register
+ */
+static inline int gpio_twl4030_read(u8 address)
+{
+ u8 data;
+ int ret = 0;
+
+ ret = twl4030_i2c_read_u8(TWL4030_MODULE_GPIO, &data, address);
+ return (ret < 0) ? ret : data;
+}
+
+/*----------------------------------------------------------------------*/
+
+static u8 cached_leden; /* protected by gpio_lock */
+
+/* The LED lines are open drain outputs ... a FET pulls to GND, so an
+ * external pullup is needed. We could also expose the integrated PWM
+ * as a LED brightness control; we initialize it as "always on".
+ */
+static void twl4030_led_set_value(int led, int value)
+{
+ u8 mask = LEDEN_LEDAON | LEDEN_LEDAPWM;
+ int status;
+
+ if (led)
+ mask <<= 1;
+
+ mutex_lock(&gpio_lock);
+ if (value)
+ cached_leden &= ~mask;
+ else
+ cached_leden |= mask;
+ status = twl4030_i2c_write_u8(TWL4030_MODULE_LED, cached_leden,
+ TWL4030_LED_LEDEN);
+ mutex_unlock(&gpio_lock);
+}
+
+static int twl4030_set_gpio_direction(int gpio, int is_input)
+{
+ u8 d_bnk = gpio >> 3;
+ u8 d_msk = BIT(gpio & 0x7);
+ u8 reg = 0;
+ u8 base = REG_GPIODATADIR1 + d_bnk;
+ int ret = 0;
+
+ mutex_lock(&gpio_lock);
+ ret = gpio_twl4030_read(base);
+ if (ret >= 0) {
+ if (is_input)
+ reg = ret & ~d_msk;
+ else
+ reg = ret | d_msk;
+
+ ret = gpio_twl4030_write(base, reg);
+ }
+ mutex_unlock(&gpio_lock);
+ return ret;
+}
+
+static int twl4030_set_gpio_dataout(int gpio, int enable)
+{
+ u8 d_bnk = gpio >> 3;
+ u8 d_msk = BIT(gpio & 0x7);
+ u8 base = 0;
+
+ if (enable)
+ base = REG_SETGPIODATAOUT1 + d_bnk;
+ else
+ base = REG_CLEARGPIODATAOUT1 + d_bnk;
+
+ return gpio_twl4030_write(base, d_msk);
+}
+
+static int twl4030_get_gpio_datain(int gpio)
+{
+ u8 d_bnk = gpio >> 3;
+ u8 d_off = gpio & 0x7;
+ u8 base = 0;
+ int ret = 0;
+
+ if (unlikely((gpio >= TWL4030_GPIO_MAX)
+ || !(gpio_usage_count & BIT(gpio))))
+ return -EPERM;
+
+ base = REG_GPIODATAIN1 + d_bnk;
+ ret = gpio_twl4030_read(base);
+ if (ret > 0)
+ ret = (ret >> d_off) & 0x1;
+
+ return ret;
+}
+
+/*
+ * Configure debounce timing value for a GPIO pin on TWL4030
+ */
+int twl4030_set_gpio_debounce(int gpio, int enable)
+{
+ u8 d_bnk = gpio >> 3;
+ u8 d_msk = BIT(gpio & 0x7);
+ u8 reg = 0;
+ u8 base = 0;
+ int ret = 0;
+
+ if (unlikely((gpio >= TWL4030_GPIO_MAX)
+ || !(gpio_usage_count & BIT(gpio))))
+ return -EPERM;
+
+ base = REG_GPIO_DEBEN1 + d_bnk;
+ mutex_lock(&gpio_lock);
+ ret = gpio_twl4030_read(base);
+ if (ret >= 0) {
+ if (enable)
+ reg = ret | d_msk;
+ else
+ reg = ret & ~d_msk;
+
+ ret = gpio_twl4030_write(base, reg);
+ }
+ mutex_unlock(&gpio_lock);
+ return ret;
+}
+EXPORT_SYMBOL(twl4030_set_gpio_debounce);
+
+/*----------------------------------------------------------------------*/
+
+static int twl_request(struct gpio_chip *chip, unsigned offset)
+{
+ int status = 0;
+
+ mutex_lock(&gpio_lock);
+
+ /* Support the two LED outputs as output-only GPIOs. */
+ if (offset >= TWL4030_GPIO_MAX) {
+ u8 ledclr_mask = LEDEN_LEDAON | LEDEN_LEDAEXT
+ | LEDEN_LEDAPWM | LEDEN_PWM_LENGTHA;
+ u8 module = TWL4030_MODULE_PWMA;
+
+ offset -= TWL4030_GPIO_MAX;
+ if (offset) {
+ ledclr_mask <<= 1;
+ module = TWL4030_MODULE_PWMB;
+ }
+
+ /* initialize PWM to always-drive */
+ status = twl4030_i2c_write_u8(module, 0x7f,
+ TWL4030_PWMx_PWMxOFF);
+ if (status < 0)
+ goto done;
+ status = twl4030_i2c_write_u8(module, 0x7f,
+ TWL4030_PWMx_PWMxON);
+ if (status < 0)
+ goto done;
+
+ /* init LED to not-driven (high) */
+ module = TWL4030_MODULE_LED;
+ status = twl4030_i2c_read_u8(module, &cached_leden,
+ TWL4030_LED_LEDEN);
+ if (status < 0)
+ goto done;
+ cached_leden &= ~ledclr_mask;
+ status = twl4030_i2c_write_u8(module, cached_leden,
+ TWL4030_LED_LEDEN);
+ if (status < 0)
+ goto done;
+
+ status = 0;
+ goto done;
+ }
+
+ /* on first use, turn GPIO module "on" */
+ if (!gpio_usage_count) {
+ struct twl4030_gpio_platform_data *pdata;
+ u8 value = MASK_GPIO_CTRL_GPIO_ON;
+
+ /* optionally have the first two GPIOs switch vMMC1
+ * and vMMC2 power supplies based on card presence.
+ */
+ pdata = chip->dev->platform_data;
+ value |= pdata->mmc_cd & 0x03;
+
+ status = gpio_twl4030_write(REG_GPIO_CTRL, value);
+ }
+
+ if (!status)
+ gpio_usage_count |= (0x1 << offset);
+
+done:
+ mutex_unlock(&gpio_lock);
+ return status;
+}
+
+static void twl_free(struct gpio_chip *chip, unsigned offset)
+{
+ if (offset >= TWL4030_GPIO_MAX) {
+ twl4030_led_set_value(offset - TWL4030_GPIO_MAX, 1);
+ return;
+ }
+
+ mutex_lock(&gpio_lock);
+
+ gpio_usage_count &= ~BIT(offset);
+
+ /* on last use, switch off GPIO module */
+ if (!gpio_usage_count)
+ gpio_twl4030_write(REG_GPIO_CTRL, 0x0);
+
+ mutex_unlock(&gpio_lock);
+}
+
+static int twl_direction_in(struct gpio_chip *chip, unsigned offset)
+{
+ return (offset < TWL4030_GPIO_MAX)
+ ? twl4030_set_gpio_direction(offset, 1)
+ : -EINVAL;
+}
+
+static int twl_get(struct gpio_chip *chip, unsigned offset)
+{
+ int status = 0;
+
+ if (offset < TWL4030_GPIO_MAX)
+ status = twl4030_get_gpio_datain(offset);
+ else if (offset == TWL4030_GPIO_MAX)
+ status = cached_leden & LEDEN_LEDAON;
+ else
+ status = cached_leden & LEDEN_LEDBON;
+ return (status < 0) ? 0 : status;
+}
+
+static int twl_direction_out(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if (offset < TWL4030_GPIO_MAX) {
+ twl4030_set_gpio_dataout(offset, value);
+ return twl4030_set_gpio_direction(offset, 0);
+ } else {
+ twl4030_led_set_value(offset - TWL4030_GPIO_MAX, value);
+ return 0;
+ }
+}
+
+static void twl_set(struct gpio_chip *chip, unsigned offset, int value)
+{
+ if (offset < TWL4030_GPIO_MAX)
+ twl4030_set_gpio_dataout(offset, value);
+ else
+ twl4030_led_set_value(offset - TWL4030_GPIO_MAX, value);
+}
+
+static int twl_to_irq(struct gpio_chip *chip, unsigned offset)
+{
+ return (twl4030_gpio_irq_base && (offset < TWL4030_GPIO_MAX))
+ ? (twl4030_gpio_irq_base + offset)
+ : -EINVAL;
+}
+
+static struct gpio_chip twl_gpiochip = {
+ .label = "twl4030",
+ .owner = THIS_MODULE,
+ .request = twl_request,
+ .free = twl_free,
+ .direction_input = twl_direction_in,
+ .get = twl_get,
+ .direction_output = twl_direction_out,
+ .set = twl_set,
+ .to_irq = twl_to_irq,
+ .can_sleep = 1,
+};
+
+/*----------------------------------------------------------------------*/
+
+static int __devinit gpio_twl4030_pulls(u32 ups, u32 downs)
+{
+ u8 message[6];
+ unsigned i, gpio_bit;
+
+ /* For most pins, a pulldown was enabled by default.
+ * We should have data that's specific to this board.
+ */
+ for (gpio_bit = 1, i = 1; i < 6; i++) {
+ u8 bit_mask;
+ unsigned j;
+
+ for (bit_mask = 0, j = 0; j < 8; j += 2, gpio_bit <<= 1) {
+ if (ups & gpio_bit)
+ bit_mask |= 1 << (j + 1);
+ else if (downs & gpio_bit)
+ bit_mask |= 1 << (j + 0);
+ }
+ message[i] = bit_mask;
+ }
+
+ return twl4030_i2c_write(TWL4030_MODULE_GPIO, message,
+ REG_GPIOPUPDCTR1, 5);
+}
+
+static int gpio_twl4030_remove(struct platform_device *pdev);
+
+static int __devinit gpio_twl4030_probe(struct platform_device *pdev)
+{
+ struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+ int ret;
+
+ /* maybe setup IRQs */
+ if (pdata->irq_base) {
+ if (is_module()) {
+ dev_err(&pdev->dev,
+ "can't dispatch IRQs from modules\n");
+ goto no_irqs;
+ }
+ ret = twl4030_sih_setup(TWL4030_MODULE_GPIO);
+ if (ret < 0)
+ return ret;
+ WARN_ON(ret != pdata->irq_base);
+ twl4030_gpio_irq_base = ret;
+ }
+
+no_irqs:
+ /*
+ * NOTE: boards may waste power if they don't set pullups
+ * and pulldowns correctly ... default for non-ULPI pins is
+ * pulldown, and some other pins may have external pullups
+ * or pulldowns. Careful!
+ */
+ ret = gpio_twl4030_pulls(pdata->pullups, pdata->pulldowns);
+ if (ret)
+ dev_dbg(&pdev->dev, "pullups %.05x %.05x --> %d\n",
+ pdata->pullups, pdata->pulldowns,
+ ret);
+
+ twl_gpiochip.base = pdata->gpio_base;
+ twl_gpiochip.ngpio = TWL4030_GPIO_MAX;
+ twl_gpiochip.dev = &pdev->dev;
+
+ /* NOTE: we assume VIBRA_CTL.VIBRA_EN, in MODULE_AUDIO_VOICE,
+ * is (still) clear if use_leds is set.
+ */
+ if (pdata->use_leds)
+ twl_gpiochip.ngpio += 2;
+
+ ret = gpiochip_add(&twl_gpiochip);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "could not register gpiochip, %d\n",
+ ret);
+ twl_gpiochip.ngpio = 0;
+ gpio_twl4030_remove(pdev);
+ } else if (pdata->setup) {
+ int status;
+
+ status = pdata->setup(&pdev->dev,
+ pdata->gpio_base, TWL4030_GPIO_MAX);
+ if (status)
+ dev_dbg(&pdev->dev, "setup --> %d\n", status);
+ }
+
+ return ret;
+}
+
+static int __devexit gpio_twl4030_remove(struct platform_device *pdev)
+{
+ struct twl4030_gpio_platform_data *pdata = pdev->dev.platform_data;
+ int status;
+
+ if (pdata->teardown) {
+ status = pdata->teardown(&pdev->dev,
+ pdata->gpio_base, TWL4030_GPIO_MAX);
+ if (status) {
+ dev_dbg(&pdev->dev, "teardown --> %d\n", status);
+ return status;
+ }
+ }
+
+ status = gpiochip_remove(&twl_gpiochip);
+ if (status < 0)
+ return status;
+
+ if (is_module())
+ return 0;
+
+ /* REVISIT no support yet for deregistering all the IRQs */
+ WARN_ON(1);
+ return -EIO;
+}
+
+/* Note: this hardware lives inside an I2C-based multi-function device. */
+MODULE_ALIAS("platform:twl4030_gpio");
+
+static struct platform_driver gpio_twl4030_driver = {
+ .driver.name = "twl4030_gpio",
+ .driver.owner = THIS_MODULE,
+ .probe = gpio_twl4030_probe,
+ .remove = __devexit_p(gpio_twl4030_remove),
+};
+
+static int __init gpio_twl4030_init(void)
+{
+ return platform_driver_register(&gpio_twl4030_driver);
+}
+subsys_initcall(gpio_twl4030_init);
+
+static void __exit gpio_twl4030_exit(void)
+{
+ platform_driver_unregister(&gpio_twl4030_driver);
+}
+module_exit(gpio_twl4030_exit);
+
+MODULE_AUTHOR("Texas Instruments, Inc.");
+MODULE_DESCRIPTION("GPIO interface for TWL4030");
+MODULE_LICENSE("GPL");
.owner = THIS_MODULE,
.name = "i2c-cpm",
.algo = &cpm_i2c_algo,
- .class = I2C_CLASS_HWMON | I2C_CLASS_SPD,
};
static int __devinit cpm_i2c_setup(struct cpm_i2c *cpm)
obj-$(CONFIG_IDE) += ide-core.o
-ifeq ($(CONFIG_IDE_ARM), y)
- ide-arm-core-y += arm/ide_arm.o
- obj-y += ide-arm-core.o
-endif
-
-obj-$(CONFIG_IDE) += legacy/ pci/
+obj-$(CONFIG_IDE_ARM) += ide_arm.o
+
+obj-$(CONFIG_BLK_DEV_ALI14XX) += ali14xx.o
+obj-$(CONFIG_BLK_DEV_UMC8672) += umc8672.o
+obj-$(CONFIG_BLK_DEV_DTC2278) += dtc2278.o
+obj-$(CONFIG_BLK_DEV_HT6560B) += ht6560b.o
+obj-$(CONFIG_BLK_DEV_QD65XX) += qd65xx.o
+obj-$(CONFIG_BLK_DEV_4DRIVES) += ide-4drives.o
+
+obj-$(CONFIG_BLK_DEV_GAYLE) += gayle.o
+obj-$(CONFIG_BLK_DEV_FALCON_IDE) += falconide.o
+obj-$(CONFIG_BLK_DEV_MAC_IDE) += macide.o
+obj-$(CONFIG_BLK_DEV_Q40IDE) += q40ide.o
+obj-$(CONFIG_BLK_DEV_BUDDHA) += buddha.o
+
+obj-$(CONFIG_BLK_DEV_AEC62XX) += aec62xx.o
+obj-$(CONFIG_BLK_DEV_ALI15X3) += alim15x3.o
+obj-$(CONFIG_BLK_DEV_AMD74XX) += amd74xx.o
+obj-$(CONFIG_BLK_DEV_ATIIXP) += atiixp.o
+obj-$(CONFIG_BLK_DEV_CELLEB) += scc_pata.o
+obj-$(CONFIG_BLK_DEV_CMD64X) += cmd64x.o
+obj-$(CONFIG_BLK_DEV_CS5520) += cs5520.o
+obj-$(CONFIG_BLK_DEV_CS5530) += cs5530.o
+obj-$(CONFIG_BLK_DEV_CS5535) += cs5535.o
+obj-$(CONFIG_BLK_DEV_SC1200) += sc1200.o
+obj-$(CONFIG_BLK_DEV_CY82C693) += cy82c693.o
+obj-$(CONFIG_BLK_DEV_DELKIN) += delkin_cb.o
+obj-$(CONFIG_BLK_DEV_HPT366) += hpt366.o
+obj-$(CONFIG_BLK_DEV_IT8213) += it8213.o
+obj-$(CONFIG_BLK_DEV_IT821X) += it821x.o
+obj-$(CONFIG_BLK_DEV_JMICRON) += jmicron.o
+obj-$(CONFIG_BLK_DEV_NS87415) += ns87415.o
+obj-$(CONFIG_BLK_DEV_OPTI621) += opti621.o
+obj-$(CONFIG_BLK_DEV_PDC202XX_OLD) += pdc202xx_old.o
+obj-$(CONFIG_BLK_DEV_PDC202XX_NEW) += pdc202xx_new.o
+obj-$(CONFIG_BLK_DEV_PIIX) += piix.o
+obj-$(CONFIG_BLK_DEV_RZ1000) += rz1000.o
+obj-$(CONFIG_BLK_DEV_SVWKS) += serverworks.o
+obj-$(CONFIG_BLK_DEV_SGIIOC4) += sgiioc4.o
+obj-$(CONFIG_BLK_DEV_SIIMAGE) += siimage.o
+obj-$(CONFIG_BLK_DEV_SIS5513) += sis5513.o
+obj-$(CONFIG_BLK_DEV_SL82C105) += sl82c105.o
+obj-$(CONFIG_BLK_DEV_SLC90E66) += slc90e66.o
+obj-$(CONFIG_BLK_DEV_TC86C001) += tc86c001.o
+obj-$(CONFIG_BLK_DEV_TRIFLEX) += triflex.o
+obj-$(CONFIG_BLK_DEV_TRM290) += trm290.o
+obj-$(CONFIG_BLK_DEV_VIA82CXXX) += via82cxxx.o
+
+# Must appear at the end of the block
+obj-$(CONFIG_BLK_DEV_GENERIC) += ide-pci-generic.o
+ide-pci-generic-y += generic.o
obj-$(CONFIG_IDEPCI_PCIBUS_ORDER) += ide-scan-pci.o
-ifeq ($(CONFIG_BLK_DEV_CMD640), y)
- cmd640-core-y += pci/cmd640.o
- obj-y += cmd640-core.o
-endif
+obj-$(CONFIG_BLK_DEV_CMD640) += cmd640.o
+
+obj-$(CONFIG_BLK_DEV_IDE_PMAC) += pmac.o
+
+obj-$(CONFIG_IDE_H8300) += ide-h8300.o
-obj-$(CONFIG_IDE) += ppc/
-obj-$(CONFIG_IDE_H8300) += h8300/
obj-$(CONFIG_IDE_GENERIC) += ide-generic.o
obj-$(CONFIG_BLK_DEV_IDEPNP) += ide-pnp.o
obj-$(CONFIG_BLK_DEV_IDECD) += ide-cd_mod.o
obj-$(CONFIG_BLK_DEV_IDETAPE) += ide-tape.o
-ifeq ($(CONFIG_BLK_DEV_IDECS), y)
- ide-cs-core-y += legacy/ide-cs.o
- obj-y += ide-cs-core.o
-endif
+obj-$(CONFIG_BLK_DEV_IDECS) += ide-cs.o
-ifeq ($(CONFIG_BLK_DEV_PLATFORM), y)
- ide-platform-core-y += legacy/ide_platform.o
- obj-y += ide-platform-core.o
-endif
+obj-$(CONFIG_BLK_DEV_PLATFORM) += ide_platform.o
+
+obj-$(CONFIG_BLK_DEV_IDE_ICSIDE) += icside.o
+obj-$(CONFIG_BLK_DEV_IDE_RAPIDE) += rapide.o
+obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710) += palm_bk3710.o
-obj-$(CONFIG_IDE) += arm/ mips/
+obj-$(CONFIG_BLK_DEV_IDE_AU1XXX) += au1xxx-ide.o
+++ /dev/null
-
-obj-$(CONFIG_BLK_DEV_IDE_ICSIDE) += icside.o
-obj-$(CONFIG_BLK_DEV_IDE_RAPIDE) += rapide.o
-obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710) += palm_bk3710.o
-
-ifeq ($(CONFIG_IDE_ARM), m)
- obj-m += ide_arm.o
-endif
-
-EXTRA_CFLAGS := -Idrivers/ide
+++ /dev/null
-
-obj-$(CONFIG_IDE_H8300) += ide-h8300.o
+++ /dev/null
-
-# link order is important here
-
-obj-$(CONFIG_BLK_DEV_ALI14XX) += ali14xx.o
-obj-$(CONFIG_BLK_DEV_UMC8672) += umc8672.o
-obj-$(CONFIG_BLK_DEV_DTC2278) += dtc2278.o
-obj-$(CONFIG_BLK_DEV_HT6560B) += ht6560b.o
-obj-$(CONFIG_BLK_DEV_QD65XX) += qd65xx.o
-obj-$(CONFIG_BLK_DEV_4DRIVES) += ide-4drives.o
-
-obj-$(CONFIG_BLK_DEV_GAYLE) += gayle.o
-obj-$(CONFIG_BLK_DEV_FALCON_IDE) += falconide.o
-obj-$(CONFIG_BLK_DEV_MAC_IDE) += macide.o
-obj-$(CONFIG_BLK_DEV_Q40IDE) += q40ide.o
-obj-$(CONFIG_BLK_DEV_BUDDHA) += buddha.o
-
-ifeq ($(CONFIG_BLK_DEV_IDECS), m)
- obj-m += ide-cs.o
-endif
-
-ifeq ($(CONFIG_BLK_DEV_PLATFORM), m)
- obj-m += ide_platform.o
-endif
-
-EXTRA_CFLAGS := -Idrivers/ide
+++ /dev/null
-obj-$(CONFIG_BLK_DEV_IDE_AU1XXX) += au1xxx-ide.o
-
-EXTRA_CFLAGS := -Idrivers/ide
+++ /dev/null
-
-obj-$(CONFIG_BLK_DEV_AEC62XX) += aec62xx.o
-obj-$(CONFIG_BLK_DEV_ALI15X3) += alim15x3.o
-obj-$(CONFIG_BLK_DEV_AMD74XX) += amd74xx.o
-obj-$(CONFIG_BLK_DEV_ATIIXP) += atiixp.o
-obj-$(CONFIG_BLK_DEV_CELLEB) += scc_pata.o
-obj-$(CONFIG_BLK_DEV_CMD64X) += cmd64x.o
-obj-$(CONFIG_BLK_DEV_CS5520) += cs5520.o
-obj-$(CONFIG_BLK_DEV_CS5530) += cs5530.o
-obj-$(CONFIG_BLK_DEV_CS5535) += cs5535.o
-obj-$(CONFIG_BLK_DEV_SC1200) += sc1200.o
-obj-$(CONFIG_BLK_DEV_CY82C693) += cy82c693.o
-obj-$(CONFIG_BLK_DEV_DELKIN) += delkin_cb.o
-obj-$(CONFIG_BLK_DEV_HPT366) += hpt366.o
-obj-$(CONFIG_BLK_DEV_IT8213) += it8213.o
-obj-$(CONFIG_BLK_DEV_IT821X) += it821x.o
-obj-$(CONFIG_BLK_DEV_JMICRON) += jmicron.o
-obj-$(CONFIG_BLK_DEV_NS87415) += ns87415.o
-obj-$(CONFIG_BLK_DEV_OPTI621) += opti621.o
-obj-$(CONFIG_BLK_DEV_PDC202XX_OLD) += pdc202xx_old.o
-obj-$(CONFIG_BLK_DEV_PDC202XX_NEW) += pdc202xx_new.o
-obj-$(CONFIG_BLK_DEV_PIIX) += piix.o
-obj-$(CONFIG_BLK_DEV_RZ1000) += rz1000.o
-obj-$(CONFIG_BLK_DEV_SVWKS) += serverworks.o
-obj-$(CONFIG_BLK_DEV_SGIIOC4) += sgiioc4.o
-obj-$(CONFIG_BLK_DEV_SIIMAGE) += siimage.o
-obj-$(CONFIG_BLK_DEV_SIS5513) += sis5513.o
-obj-$(CONFIG_BLK_DEV_SL82C105) += sl82c105.o
-obj-$(CONFIG_BLK_DEV_SLC90E66) += slc90e66.o
-obj-$(CONFIG_BLK_DEV_TC86C001) += tc86c001.o
-obj-$(CONFIG_BLK_DEV_TRIFLEX) += triflex.o
-obj-$(CONFIG_BLK_DEV_TRM290) += trm290.o
-obj-$(CONFIG_BLK_DEV_VIA82CXXX) += via82cxxx.o
-
-# Must appear at the end of the block
-obj-$(CONFIG_BLK_DEV_GENERIC) += ide-pci-generic.o
-ide-pci-generic-y += generic.o
-
-ifeq ($(CONFIG_BLK_DEV_CMD640), m)
- obj-m += cmd640.o
-endif
-
-EXTRA_CFLAGS := -Idrivers/ide
+++ /dev/null
-
-obj-$(CONFIG_BLK_DEV_IDE_PMAC) += pmac.o
if (i == qp_info->snoop_table_size) {
/* Grow table. */
- new_snoop_table = kmalloc(sizeof mad_snoop_priv *
- qp_info->snoop_table_size + 1,
- GFP_ATOMIC);
+ new_snoop_table = krealloc(qp_info->snoop_table,
+ sizeof mad_snoop_priv *
+ (qp_info->snoop_table_size + 1),
+ GFP_ATOMIC);
if (!new_snoop_table) {
i = -ENOMEM;
goto out;
}
- if (qp_info->snoop_table) {
- memcpy(new_snoop_table, qp_info->snoop_table,
- sizeof mad_snoop_priv *
- qp_info->snoop_table_size);
- kfree(qp_info->snoop_table);
- }
+
qp_info->snoop_table = new_snoop_table;
qp_info->snoop_table_size++;
}
mutex_lock(&file->mut);
mc = ucma_alloc_multicast(ctx);
- if (IS_ERR(mc)) {
- ret = PTR_ERR(mc);
+ if (!mc) {
+ ret = -ENOMEM;
goto err1;
}
fail3:
cxgb3_free_atid(ep->com.tdev, ep->atid);
fail2:
+ cm_id->rem_ref(cm_id);
put_ep(&ep->com);
out:
return err;
/* MR pgsize: bit 0-3 means 4K, 64K, 1M, 16M respectively */
u32 hca_cap_mr_pgsize;
int max_mtu;
+ int max_num_qps;
+ int max_num_cqs;
atomic_t num_cqs;
atomic_t num_qps;
};
if (cqe >= 0xFFFFFFFF - 64 - additional_cqe)
return ERR_PTR(-EINVAL);
- if (!atomic_add_unless(&shca->num_cqs, 1, ehca_max_cq)) {
+ if (!atomic_add_unless(&shca->num_cqs, 1, shca->max_num_cqs)) {
ehca_err(device, "Unable to create CQ, max number of %i "
- "CQs reached.", ehca_max_cq);
+ "CQs reached.", shca->max_num_cqs);
ehca_err(device, "To increase the maximum number of CQs "
"use the number_of_cqs module parameter.\n");
return ERR_PTR(-ENOSPC);
#include <linux/slab.h>
#endif
+#include <linux/notifier.h>
+#include <linux/memory.h>
#include "ehca_classes.h"
#include "ehca_iverbs.h"
#include "ehca_mrmw.h"
shca->hca_cap_mr_pgsize |= pgsize_map[i + 1];
/* Set maximum number of CQs and QPs to calculate EQ size */
- if (ehca_max_qp == -1)
- ehca_max_qp = min_t(int, rblock->max_qp, EHCA_MAX_NUM_QUEUES);
- else if (ehca_max_qp < 1 || ehca_max_qp > rblock->max_qp) {
- ehca_gen_err("Requested number of QPs is out of range (1 - %i) "
- "specified by HW", rblock->max_qp);
- ret = -EINVAL;
- goto sense_attributes1;
+ if (shca->max_num_qps == -1)
+ shca->max_num_qps = min_t(int, rblock->max_qp,
+ EHCA_MAX_NUM_QUEUES);
+ else if (shca->max_num_qps < 1 || shca->max_num_qps > rblock->max_qp) {
+ ehca_gen_warn("The requested number of QPs is out of range "
+ "(1 - %i) specified by HW. Value is set to %i",
+ rblock->max_qp, rblock->max_qp);
+ shca->max_num_qps = rblock->max_qp;
}
- if (ehca_max_cq == -1)
- ehca_max_cq = min_t(int, rblock->max_cq, EHCA_MAX_NUM_QUEUES);
- else if (ehca_max_cq < 1 || ehca_max_cq > rblock->max_cq) {
- ehca_gen_err("Requested number of CQs is out of range (1 - %i) "
- "specified by HW", rblock->max_cq);
- ret = -EINVAL;
- goto sense_attributes1;
+ if (shca->max_num_cqs == -1)
+ shca->max_num_cqs = min_t(int, rblock->max_cq,
+ EHCA_MAX_NUM_QUEUES);
+ else if (shca->max_num_cqs < 1 || shca->max_num_cqs > rblock->max_cq) {
+ ehca_gen_warn("The requested number of CQs is out of range "
+ "(1 - %i) specified by HW. Value is set to %i",
+ rblock->max_cq, rblock->max_cq);
}
/* query max MTU from first port -- it's the same for all ports */
ehca_gen_err("Cannot allocate shca memory.");
return -ENOMEM;
}
+
mutex_init(&shca->modify_mutex);
atomic_set(&shca->num_cqs, 0);
atomic_set(&shca->num_qps, 0);
+ shca->max_num_qps = ehca_max_qp;
+ shca->max_num_cqs = ehca_max_cq;
+
for (i = 0; i < ARRAY_SIZE(shca->sport); i++)
spin_lock_init(&shca->sport[i].mod_sqp_lock);
goto probe1;
}
- eq_size = 2 * ehca_max_cq + 4 * ehca_max_qp;
+ eq_size = 2 * shca->max_num_cqs + 4 * shca->max_num_qps;
/* create event queues */
ret = ehca_create_eq(shca, &shca->eq, EHCA_EQ, eq_size);
if (ret) {
spin_unlock(&shca_list_lock);
}
+static int ehca_mem_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ static unsigned long ehca_dmem_warn_time;
+
+ switch (action) {
+ case MEM_CANCEL_OFFLINE:
+ case MEM_CANCEL_ONLINE:
+ case MEM_ONLINE:
+ case MEM_OFFLINE:
+ return NOTIFY_OK;
+ case MEM_GOING_ONLINE:
+ case MEM_GOING_OFFLINE:
+ /* only ok if no hca is attached to the lpar */
+ spin_lock(&shca_list_lock);
+ if (list_empty(&shca_list)) {
+ spin_unlock(&shca_list_lock);
+ return NOTIFY_OK;
+ } else {
+ spin_unlock(&shca_list_lock);
+ if (printk_timed_ratelimit(&ehca_dmem_warn_time,
+ 30 * 1000))
+ ehca_gen_err("DMEM operations are not allowed"
+ "as long as an ehca adapter is"
+ "attached to the LPAR");
+ return NOTIFY_BAD;
+ }
+ }
+ return NOTIFY_OK;
+}
+
+static struct notifier_block ehca_mem_nb = {
+ .notifier_call = ehca_mem_notifier,
+};
+
static int __init ehca_module_init(void)
{
int ret;
goto module_init2;
}
+ ret = register_memory_notifier(&ehca_mem_nb);
+ if (ret) {
+ ehca_gen_err("Failed registering memory add/remove notifier");
+ goto module_init3;
+ }
+
if (ehca_poll_all_eqs != 1) {
ehca_gen_err("WARNING!!!");
ehca_gen_err("It is possible to lose interrupts.");
return 0;
+module_init3:
+ ibmebus_unregister_driver(&ehca_driver);
+
module_init2:
ehca_destroy_slab_caches();
ibmebus_unregister_driver(&ehca_driver);
+ unregister_memory_notifier(&ehca_mem_nb);
+
ehca_destroy_slab_caches();
ehca_destroy_comp_pool();
u32 swqe_size = 0, rwqe_size = 0, ib_qp_num;
unsigned long flags;
- if (!atomic_add_unless(&shca->num_qps, 1, ehca_max_qp)) {
+ if (!atomic_add_unless(&shca->num_qps, 1, shca->max_num_qps)) {
ehca_err(pd->device, "Unable to create QP, max number of %i "
- "QPs reached.", ehca_max_qp);
+ "QPs reached.", shca->max_num_qps);
ehca_err(pd->device, "To increase the maximum number of QPs "
"use the number_of_qps module parameter.\n");
return ERR_PTR(-ENOSPC);
if (init_attr->srq) {
my_srq = container_of(init_attr->srq, struct ehca_qp, ib_srq);
+ if (qp_type == IB_QPT_UC) {
+ ehca_err(pd->device, "UC with SRQ not supported");
+ atomic_dec(&shca->num_qps);
+ return ERR_PTR(-EINVAL);
+ }
+
has_srq = 1;
parms.ext_type = EQPT_SRQBASE;
parms.srq_qpn = my_srq->real_qp_num;
int p, q;
int ret;
- for (p = 0; p < dev->dev->caps.num_ports; ++p)
+ for (p = 0; p < dev->num_ports; ++p)
for (q = 0; q <= 1; ++q) {
agent = ib_register_mad_agent(&dev->ib_dev, p + 1,
q ? IB_QPT_GSI : IB_QPT_SMI,
return 0;
err:
- for (p = 0; p < dev->dev->caps.num_ports; ++p)
+ for (p = 0; p < dev->num_ports; ++p)
for (q = 0; q <= 1; ++q)
if (dev->send_agent[p][q])
ib_unregister_mad_agent(dev->send_agent[p][q]);
struct ib_mad_agent *agent;
int p, q;
- for (p = 0; p < dev->dev->caps.num_ports; ++p) {
+ for (p = 0; p < dev->num_ports; ++p) {
for (q = 0; q <= 1; ++q) {
agent = dev->send_agent[p][q];
dev->send_agent[p][q] = NULL;
ibdev->ib_dev.owner = THIS_MODULE;
ibdev->ib_dev.node_type = RDMA_NODE_IB_CA;
ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey;
- ibdev->ib_dev.phys_port_cnt = dev->caps.num_ports;
+ ibdev->num_ports = 0;
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB)
+ ibdev->num_ports++;
+ ibdev->ib_dev.phys_port_cnt = ibdev->num_ports;
ibdev->ib_dev.num_comp_vectors = 1;
ibdev->ib_dev.dma_device = &dev->pdev->dev;
struct mlx4_ib_dev *ibdev = ibdev_ptr;
int p;
- for (p = 1; p <= dev->caps.num_ports; ++p)
+ for (p = 1; p <= ibdev->num_ports; ++p)
mlx4_CLOSE_PORT(dev, p);
mlx4_ib_mad_cleanup(ibdev);
enum mlx4_dev_event event, int port)
{
struct ib_event ibev;
+ struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr);
+
+ if (port > ibdev->num_ports)
+ return;
switch (event) {
case MLX4_DEV_EVENT_PORT_UP:
struct mlx4_ib_dev {
struct ib_device ib_dev;
struct mlx4_dev *dev;
+ int num_ports;
void __iomem *uar_map;
struct mlx4_uar priv_uar;
struct ib_qp_init_attr *init_attr,
struct ib_udata *udata, int sqpn, struct mlx4_ib_qp *qp)
{
+ int qpn;
int err;
mutex_init(&qp->mutex);
}
}
- err = mlx4_qp_alloc(dev->dev, sqpn, &qp->mqp);
+ if (sqpn) {
+ qpn = sqpn;
+ } else {
+ err = mlx4_qp_reserve_range(dev->dev, 1, 1, &qpn);
+ if (err)
+ goto err_wrid;
+ }
+
+ err = mlx4_qp_alloc(dev->dev, qpn, &qp->mqp);
if (err)
- goto err_wrid;
+ goto err_qpn;
/*
* Hardware wants QPN written in big-endian order (after
return 0;
+err_qpn:
+ if (!sqpn)
+ mlx4_qp_release_range(dev->dev, qpn, 1);
+
err_wrid:
if (pd->uobject) {
if (!init_attr->srq)
mlx4_ib_unlock_cqs(send_cq, recv_cq);
mlx4_qp_free(dev->dev, &qp->mqp);
+
+ if (!is_sqp(dev, qp))
+ mlx4_qp_release_range(dev->dev, qp->mqp.qpn, 1);
+
mlx4_mtt_cleanup(dev->dev, &qp->mtt);
if (is_user) {
void ipoib_drain_cq(struct net_device *dev);
void ipoib_set_ethtool_ops(struct net_device *dev);
+int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca);
#ifdef CONFIG_INFINIBAND_IPOIB_CM
strncpy(drvinfo->driver, "ipoib", sizeof(drvinfo->driver) - 1);
}
+static u32 ipoib_get_rx_csum(struct net_device *dev)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+ return test_bit(IPOIB_FLAG_CSUM, &priv->flags) &&
+ !test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
+}
+
static int ipoib_get_coalesce(struct net_device *dev,
struct ethtool_coalesce *coal)
{
static const struct ethtool_ops ipoib_ethtool_ops = {
.get_drvinfo = ipoib_get_drvinfo,
- .get_tso = ethtool_op_get_tso,
+ .get_rx_csum = ipoib_get_rx_csum,
.get_coalesce = ipoib_get_coalesce,
.set_coalesce = ipoib_set_coalesce,
.get_flags = ethtool_op_get_flags,
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task,
round_jiffies_relative(HZ));
- init_timer(&priv->poll_timer);
- priv->poll_timer.function = ipoib_ib_tx_timer_func;
- priv->poll_timer.data = (unsigned long)dev;
-
set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
return 0;
return -ENODEV;
}
+ setup_timer(&priv->poll_timer, ipoib_ib_tx_timer_func,
+ (unsigned long) dev);
+
if (dev->flags & IFF_UP) {
if (ipoib_ib_dev_open(dev)) {
ipoib_transport_dev_cleanup(dev);
return device_create_file(&dev->dev, &dev_attr_pkey);
}
+int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca)
+{
+ struct ib_device_attr *device_attr;
+ int result = -ENOMEM;
+
+ device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
+ if (!device_attr) {
+ printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
+ hca->name, sizeof *device_attr);
+ return result;
+ }
+
+ result = ib_query_device(hca, device_attr);
+ if (result) {
+ printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
+ hca->name, result);
+ kfree(device_attr);
+ return result;
+ }
+ priv->hca_caps = device_attr->device_cap_flags;
+
+ kfree(device_attr);
+
+ if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
+ set_bit(IPOIB_FLAG_CSUM, &priv->flags);
+ priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
+ }
+
+ if (lro)
+ priv->dev->features |= NETIF_F_LRO;
+
+ if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO)
+ priv->dev->features |= NETIF_F_TSO;
+
+ return 0;
+}
+
+
static struct net_device *ipoib_add_port(const char *format,
struct ib_device *hca, u8 port)
{
struct ipoib_dev_priv *priv;
- struct ib_device_attr *device_attr;
struct ib_port_attr attr;
int result = -ENOMEM;
goto device_init_failed;
}
- device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
- if (!device_attr) {
- printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
- hca->name, sizeof *device_attr);
+ if (ipoib_set_dev_features(priv, hca))
goto device_init_failed;
- }
-
- result = ib_query_device(hca, device_attr);
- if (result) {
- printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
- hca->name, result);
- kfree(device_attr);
- goto device_init_failed;
- }
- priv->hca_caps = device_attr->device_cap_flags;
-
- kfree(device_attr);
-
- if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
- set_bit(IPOIB_FLAG_CSUM, &priv->flags);
- priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
- }
-
- if (lro)
- priv->dev->features |= NETIF_F_LRO;
/*
* Set the full membership bit, so that we join the right
goto event_failed;
}
- if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO)
- priv->dev->features |= NETIF_F_TSO;
-
result = register_netdev(priv->dev);
if (result) {
printk(KERN_WARNING "%s: couldn't register ipoib port %d; error %d\n",
priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
+ result = ipoib_set_dev_features(priv, ppriv->ca);
+ if (result)
+ goto device_init_failed;
+
priv->pkey = pkey;
memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
obj-$(CONFIG_DM_DELAY) += dm-delay.o
obj-$(CONFIG_DM_MULTIPATH) += dm-multipath.o dm-round-robin.o
obj-$(CONFIG_DM_SNAPSHOT) += dm-snapshot.o
-obj-$(CONFIG_DM_MIRROR) += dm-mirror.o dm-log.o
+obj-$(CONFIG_DM_MIRROR) += dm-mirror.o dm-log.o dm-region-hash.o
obj-$(CONFIG_DM_ZERO) += dm-zero.o
quiet_cmd_unroll = UNROLL $@
#include <asm/page.h>
#include <asm/unaligned.h>
-#include "dm.h"
+#include <linux/device-mapper.h>
#define DM_MSG_PREFIX "crypt"
#define MESG_STR(x) x, sizeof(x)
atomic_t pending;
int error;
sector_t sector;
+ struct dm_crypt_io *base_io;
};
struct dm_crypt_request {
struct workqueue_struct *io_queue;
struct workqueue_struct *crypt_queue;
- wait_queue_head_t writeq;
/*
* crypto related data
io->base_bio = bio;
io->sector = sector;
io->error = 0;
+ io->base_io = NULL;
atomic_set(&io->pending, 0);
return io;
/*
* One of the bios was finished. Check for completion of
* the whole request and correctly clean up the buffer.
+ * If base_io is set, wait for the last fragment to complete.
*/
static void crypt_dec_pending(struct dm_crypt_io *io)
{
if (!atomic_dec_and_test(&io->pending))
return;
- bio_endio(io->base_bio, io->error);
+ if (likely(!io->base_io))
+ bio_endio(io->base_bio, io->error);
+ else {
+ if (io->error && !io->base_io->error)
+ io->base_io->error = io->error;
+ crypt_dec_pending(io->base_io);
+ }
+
mempool_free(io, cc->io_pool);
}
static void kcryptd_io_write(struct dm_crypt_io *io)
{
struct bio *clone = io->ctx.bio_out;
- struct crypt_config *cc = io->target->private;
-
generic_make_request(clone);
- wake_up(&cc->writeq);
}
static void kcryptd_io(struct work_struct *work)
BUG_ON(io->ctx.idx_out < clone->bi_vcnt);
clone->bi_sector = cc->start + io->sector;
- io->sector += bio_sectors(clone);
if (async)
kcryptd_queue_io(io);
{
struct crypt_config *cc = io->target->private;
struct bio *clone;
+ struct dm_crypt_io *new_io;
int crypt_finished;
unsigned out_of_pages = 0;
unsigned remaining = io->base_bio->bi_size;
+ sector_t sector = io->sector;
int r;
/*
* Prevent io from disappearing until this function completes.
*/
crypt_inc_pending(io);
- crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, io->sector);
+ crypt_convert_init(cc, &io->ctx, NULL, io->base_bio, sector);
/*
* The allocated buffers can be smaller than the whole bio,
io->ctx.idx_out = 0;
remaining -= clone->bi_size;
+ sector += bio_sectors(clone);
crypt_inc_pending(io);
r = crypt_convert(cc, &io->ctx);
*/
if (unlikely(r < 0))
break;
+
+ io->sector = sector;
}
/*
if (unlikely(out_of_pages))
congestion_wait(WRITE, HZ/100);
- if (unlikely(remaining))
- wait_event(cc->writeq, !atomic_read(&io->ctx.pending));
+ /*
+ * With async crypto it is unsafe to share the crypto context
+ * between fragments, so switch to a new dm_crypt_io structure.
+ */
+ if (unlikely(!crypt_finished && remaining)) {
+ new_io = crypt_io_alloc(io->target, io->base_bio,
+ sector);
+ crypt_inc_pending(new_io);
+ crypt_convert_init(cc, &new_io->ctx, NULL,
+ io->base_bio, sector);
+ new_io->ctx.idx_in = io->ctx.idx_in;
+ new_io->ctx.offset_in = io->ctx.offset_in;
+
+ /*
+ * Fragments after the first use the base_io
+ * pending count.
+ */
+ if (!io->base_io)
+ new_io->base_io = io;
+ else {
+ new_io->base_io = io->base_io;
+ crypt_inc_pending(io->base_io);
+ crypt_dec_pending(io);
+ }
+
+ io = new_io;
+ }
}
crypt_dec_pending(io);
goto bad_crypt_queue;
}
- init_waitqueue_head(&cc->writeq);
ti->private = cc;
return 0;
#include <linux/bio.h>
#include <linux/slab.h>
-#include "dm.h"
+#include <linux/device-mapper.h>
+
#include "dm-bio-list.h"
#define DM_MSG_PREFIX "delay"
* This file is released under the GPL.
*/
-#include "dm.h"
#include "dm-snap.h"
#include <linux/mm.h>
void *area;
/*
+ * An area of zeros used to clear the next area.
+ */
+ void *zero_area;
+
+ /*
* Used to keep track of which metadata area the data in
* 'chunk' refers to.
*/
if (!ps->area)
return r;
+ ps->zero_area = vmalloc(len);
+ if (!ps->zero_area) {
+ vfree(ps->area);
+ return r;
+ }
+ memset(ps->zero_area, 0, len);
+
return 0;
}
{
vfree(ps->area);
ps->area = NULL;
+ vfree(ps->zero_area);
+ ps->zero_area = NULL;
}
struct mdata_req {
* Read or write a metadata area. Remembering to skip the first
* chunk which holds the header.
*/
-static int area_io(struct pstore *ps, chunk_t area, int rw)
+static int area_io(struct pstore *ps, int rw)
{
int r;
chunk_t chunk;
- chunk = area_location(ps, area);
+ chunk = area_location(ps, ps->current_area);
r = chunk_io(ps, chunk, rw, 0);
if (r)
return r;
- ps->current_area = area;
return 0;
}
-static int zero_area(struct pstore *ps, chunk_t area)
+static void zero_memory_area(struct pstore *ps)
{
memset(ps->area, 0, ps->snap->chunk_size << SECTOR_SHIFT);
- return area_io(ps, area, WRITE);
+}
+
+static int zero_disk_area(struct pstore *ps, chunk_t area)
+{
+ struct dm_io_region where = {
+ .bdev = ps->snap->cow->bdev,
+ .sector = ps->snap->chunk_size * area_location(ps, area),
+ .count = ps->snap->chunk_size,
+ };
+ struct dm_io_request io_req = {
+ .bi_rw = WRITE,
+ .mem.type = DM_IO_VMA,
+ .mem.ptr.vma = ps->zero_area,
+ .client = ps->io_client,
+ .notify.fn = NULL,
+ };
+
+ return dm_io(&io_req, 1, &where, NULL);
}
static int read_header(struct pstore *ps, int *new_snapshot)
static int read_exceptions(struct pstore *ps)
{
- chunk_t area;
int r, full = 1;
/*
* Keeping reading chunks and inserting exceptions until
* we find a partially full area.
*/
- for (area = 0; full; area++) {
- r = area_io(ps, area, READ);
+ for (ps->current_area = 0; full; ps->current_area++) {
+ r = area_io(ps, READ);
if (r)
return r;
return r;
}
+ ps->current_area--;
+
return 0;
}
return r;
}
- r = zero_area(ps, 0);
+ ps->current_area = 0;
+ zero_memory_area(ps);
+ r = zero_disk_area(ps, 0);
if (r) {
- DMWARN("zero_area(0) failed");
+ DMWARN("zero_disk_area(0) failed");
return r;
}
-
} else {
/*
* Sanity checks.
void (*callback) (void *, int success),
void *callback_context)
{
- int r;
unsigned int i;
struct pstore *ps = get_info(store);
struct disk_exception de;
cb->context = callback_context;
/*
- * If there are no more exceptions in flight, or we have
- * filled this metadata area we commit the exceptions to
- * disk.
+ * If there are exceptions in flight and we have not yet
+ * filled this metadata area there's nothing more to do.
*/
- if (atomic_dec_and_test(&ps->pending_count) ||
- (ps->current_committed == ps->exceptions_per_area)) {
- r = area_io(ps, ps->current_area, WRITE);
- if (r)
- ps->valid = 0;
+ if (!atomic_dec_and_test(&ps->pending_count) &&
+ (ps->current_committed != ps->exceptions_per_area))
+ return;
- /*
- * Have we completely filled the current area ?
- */
- if (ps->current_committed == ps->exceptions_per_area) {
- ps->current_committed = 0;
- r = zero_area(ps, ps->current_area + 1);
- if (r)
- ps->valid = 0;
- }
+ /*
+ * If we completely filled the current area, then wipe the next one.
+ */
+ if ((ps->current_committed == ps->exceptions_per_area) &&
+ zero_disk_area(ps, ps->current_area + 1))
+ ps->valid = 0;
- for (i = 0; i < ps->callback_count; i++) {
- cb = ps->callbacks + i;
- cb->callback(cb->context, r == 0 ? 1 : 0);
- }
+ /*
+ * Commit exceptions to disk.
+ */
+ if (ps->valid && area_io(ps, WRITE))
+ ps->valid = 0;
- ps->callback_count = 0;
+ /*
+ * Advance to the next area if this one is full.
+ */
+ if (ps->current_committed == ps->exceptions_per_area) {
+ ps->current_committed = 0;
+ ps->current_area++;
+ zero_memory_area(ps);
}
+
+ for (i = 0; i < ps->callback_count; i++) {
+ cb = ps->callbacks + i;
+ cb->callback(cb->context, ps->valid);
+ }
+
+ ps->callback_count = 0;
}
static void persistent_drop(struct exception_store *store)
* This file is released under the GPL.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
#include <linux/bio.h>
#include <linux/mempool.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <linux/mutex.h>
+#include <linux/device-mapper.h>
#include <linux/dm-kcopyd.h>
#include "dm.h"
spin_unlock_irqrestore(&kc->job_lock, flags);
}
+
+static void push_head(struct list_head *jobs, struct kcopyd_job *job)
+{
+ unsigned long flags;
+ struct dm_kcopyd_client *kc = job->kc;
+
+ spin_lock_irqsave(&kc->job_lock, flags);
+ list_add(&job->list, jobs);
+ spin_unlock_irqrestore(&kc->job_lock, flags);
+}
+
/*
* These three functions process 1 item from the corresponding
* job list.
* We couldn't service this job ATM, so
* push this job back onto the list.
*/
- push(jobs, job);
+ push_head(jobs, job);
break;
}
*/
#include "dm.h"
-
#include <linux/module.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/bio.h>
#include <linux/slab.h>
+#include <linux/device-mapper.h>
#define DM_MSG_PREFIX "linear"
#include <linux/dm-io.h>
#include <linux/dm-dirty-log.h>
-#include "dm.h"
+#include <linux/device-mapper.h>
#define DM_MSG_PREFIX "dirty region log"
* This file is released under the GPL.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
+
#include "dm-path-selector.h"
#include "dm-bio-list.h"
#include "dm-bio-record.h"
* Path selector registration.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
+
#include "dm-path-selector.h"
#include <linux/slab.h>
/*
* Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
*
* This file is released under the GPL.
*/
-#include "dm.h"
#include "dm-bio-list.h"
#include "dm-bio-record.h"
-#include <linux/ctype.h>
#include <linux/init.h>
#include <linux/mempool.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/vmalloc.h>
#include <linux/workqueue.h>
-#include <linux/log2.h>
-#include <linux/hardirq.h>
+#include <linux/device-mapper.h>
#include <linux/dm-io.h>
#include <linux/dm-dirty-log.h>
#include <linux/dm-kcopyd.h>
+#include <linux/dm-region-hash.h>
#define DM_MSG_PREFIX "raid1"
+
+#define MAX_RECOVERY 1 /* Maximum number of regions recovered in parallel. */
#define DM_IO_PAGES 64
+#define DM_KCOPYD_PAGES 64
#define DM_RAID1_HANDLE_ERRORS 0x01
#define errors_handled(p) ((p)->features & DM_RAID1_HANDLE_ERRORS)
static DECLARE_WAIT_QUEUE_HEAD(_kmirrord_recovery_stopped);
/*-----------------------------------------------------------------
- * Region hash
- *
- * The mirror splits itself up into discrete regions. Each
- * region can be in one of three states: clean, dirty,
- * nosync. There is no need to put clean regions in the hash.
- *
- * In addition to being present in the hash table a region _may_
- * be present on one of three lists.
- *
- * clean_regions: Regions on this list have no io pending to
- * them, they are in sync, we are no longer interested in them,
- * they are dull. rh_update_states() will remove them from the
- * hash table.
- *
- * quiesced_regions: These regions have been spun down, ready
- * for recovery. rh_recovery_start() will remove regions from
- * this list and hand them to kmirrord, which will schedule the
- * recovery io with kcopyd.
- *
- * recovered_regions: Regions that kcopyd has successfully
- * recovered. rh_update_states() will now schedule any delayed
- * io, up the recovery_count, and remove the region from the
- * hash.
- *
- * There are 2 locks:
- * A rw spin lock 'hash_lock' protects just the hash table,
- * this is never held in write mode from interrupt context,
- * which I believe means that we only have to disable irqs when
- * doing a write lock.
- *
- * An ordinary spin lock 'region_lock' that protects the three
- * lists in the region_hash, with the 'state', 'list' and
- * 'bhs_delayed' fields of the regions. This is used from irq
- * context, so all other uses will have to suspend local irqs.
- *---------------------------------------------------------------*/
-struct mirror_set;
-struct region_hash {
- struct mirror_set *ms;
- uint32_t region_size;
- unsigned region_shift;
-
- /* holds persistent region state */
- struct dm_dirty_log *log;
-
- /* hash table */
- rwlock_t hash_lock;
- mempool_t *region_pool;
- unsigned int mask;
- unsigned int nr_buckets;
- struct list_head *buckets;
-
- spinlock_t region_lock;
- atomic_t recovery_in_flight;
- struct semaphore recovery_count;
- struct list_head clean_regions;
- struct list_head quiesced_regions;
- struct list_head recovered_regions;
- struct list_head failed_recovered_regions;
-};
-
-enum {
- RH_CLEAN,
- RH_DIRTY,
- RH_NOSYNC,
- RH_RECOVERING
-};
-
-struct region {
- struct region_hash *rh; /* FIXME: can we get rid of this ? */
- region_t key;
- int state;
-
- struct list_head hash_list;
- struct list_head list;
-
- atomic_t pending;
- struct bio_list delayed_bios;
-};
-
-
-/*-----------------------------------------------------------------
* Mirror set structures.
*---------------------------------------------------------------*/
enum dm_raid1_error {
struct mirror_set {
struct dm_target *ti;
struct list_head list;
- struct region_hash rh;
- struct dm_kcopyd_client *kcopyd_client;
+
uint64_t features;
spinlock_t lock; /* protects the lists */
struct bio_list writes;
struct bio_list failures;
+ struct dm_region_hash *rh;
+ struct dm_kcopyd_client *kcopyd_client;
struct dm_io_client *io_client;
mempool_t *read_record_pool;
struct work_struct trigger_event;
- unsigned int nr_mirrors;
+ unsigned nr_mirrors;
struct mirror mirror[0];
};
-/*
- * Conversion fns
- */
-static inline region_t bio_to_region(struct region_hash *rh, struct bio *bio)
-{
- return (bio->bi_sector - rh->ms->ti->begin) >> rh->region_shift;
-}
-
-static inline sector_t region_to_sector(struct region_hash *rh, region_t region)
+static void wakeup_mirrord(void *context)
{
- return region << rh->region_shift;
-}
+ struct mirror_set *ms = context;
-static void wake(struct mirror_set *ms)
-{
queue_work(ms->kmirrord_wq, &ms->kmirrord_work);
}
struct mirror_set *ms = (struct mirror_set *) data;
clear_bit(0, &ms->timer_pending);
- wake(ms);
+ wakeup_mirrord(ms);
}
static void delayed_wake(struct mirror_set *ms)
add_timer(&ms->timer);
}
-/* FIXME move this */
-static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw);
-
-#define MIN_REGIONS 64
-#define MAX_RECOVERY 1
-static int rh_init(struct region_hash *rh, struct mirror_set *ms,
- struct dm_dirty_log *log, uint32_t region_size,
- region_t nr_regions)
+static void wakeup_all_recovery_waiters(void *context)
{
- unsigned int nr_buckets, max_buckets;
- size_t i;
-
- /*
- * Calculate a suitable number of buckets for our hash
- * table.
- */
- max_buckets = nr_regions >> 6;
- for (nr_buckets = 128u; nr_buckets < max_buckets; nr_buckets <<= 1)
- ;
- nr_buckets >>= 1;
-
- rh->ms = ms;
- rh->log = log;
- rh->region_size = region_size;
- rh->region_shift = ffs(region_size) - 1;
- rwlock_init(&rh->hash_lock);
- rh->mask = nr_buckets - 1;
- rh->nr_buckets = nr_buckets;
-
- rh->buckets = vmalloc(nr_buckets * sizeof(*rh->buckets));
- if (!rh->buckets) {
- DMERR("unable to allocate region hash memory");
- return -ENOMEM;
- }
-
- for (i = 0; i < nr_buckets; i++)
- INIT_LIST_HEAD(rh->buckets + i);
-
- spin_lock_init(&rh->region_lock);
- sema_init(&rh->recovery_count, 0);
- atomic_set(&rh->recovery_in_flight, 0);
- INIT_LIST_HEAD(&rh->clean_regions);
- INIT_LIST_HEAD(&rh->quiesced_regions);
- INIT_LIST_HEAD(&rh->recovered_regions);
- INIT_LIST_HEAD(&rh->failed_recovered_regions);
-
- rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS,
- sizeof(struct region));
- if (!rh->region_pool) {
- vfree(rh->buckets);
- rh->buckets = NULL;
- return -ENOMEM;
- }
-
- return 0;
+ wake_up_all(&_kmirrord_recovery_stopped);
}
-static void rh_exit(struct region_hash *rh)
-{
- unsigned int h;
- struct region *reg, *nreg;
-
- BUG_ON(!list_empty(&rh->quiesced_regions));
- for (h = 0; h < rh->nr_buckets; h++) {
- list_for_each_entry_safe(reg, nreg, rh->buckets + h, hash_list) {
- BUG_ON(atomic_read(®->pending));
- mempool_free(reg, rh->region_pool);
- }
- }
-
- if (rh->log)
- dm_dirty_log_destroy(rh->log);
- if (rh->region_pool)
- mempool_destroy(rh->region_pool);
- vfree(rh->buckets);
-}
-
-#define RH_HASH_MULT 2654435387U
-
-static inline unsigned int rh_hash(struct region_hash *rh, region_t region)
-{
- return (unsigned int) ((region * RH_HASH_MULT) >> 12) & rh->mask;
-}
-
-static struct region *__rh_lookup(struct region_hash *rh, region_t region)
-{
- struct region *reg;
-
- list_for_each_entry (reg, rh->buckets + rh_hash(rh, region), hash_list)
- if (reg->key == region)
- return reg;
-
- return NULL;
-}
-
-static void __rh_insert(struct region_hash *rh, struct region *reg)
-{
- unsigned int h = rh_hash(rh, reg->key);
- list_add(®->hash_list, rh->buckets + h);
-}
-
-static struct region *__rh_alloc(struct region_hash *rh, region_t region)
-{
- struct region *reg, *nreg;
-
- read_unlock(&rh->hash_lock);
- nreg = mempool_alloc(rh->region_pool, GFP_ATOMIC);
- if (unlikely(!nreg))
- nreg = kmalloc(sizeof(struct region), GFP_NOIO);
- nreg->state = rh->log->type->in_sync(rh->log, region, 1) ?
- RH_CLEAN : RH_NOSYNC;
- nreg->rh = rh;
- nreg->key = region;
-
- INIT_LIST_HEAD(&nreg->list);
-
- atomic_set(&nreg->pending, 0);
- bio_list_init(&nreg->delayed_bios);
- write_lock_irq(&rh->hash_lock);
-
- reg = __rh_lookup(rh, region);
- if (reg)
- /* we lost the race */
- mempool_free(nreg, rh->region_pool);
-
- else {
- __rh_insert(rh, nreg);
- if (nreg->state == RH_CLEAN) {
- spin_lock(&rh->region_lock);
- list_add(&nreg->list, &rh->clean_regions);
- spin_unlock(&rh->region_lock);
- }
- reg = nreg;
- }
- write_unlock_irq(&rh->hash_lock);
- read_lock(&rh->hash_lock);
-
- return reg;
-}
-
-static inline struct region *__rh_find(struct region_hash *rh, region_t region)
-{
- struct region *reg;
-
- reg = __rh_lookup(rh, region);
- if (!reg)
- reg = __rh_alloc(rh, region);
-
- return reg;
-}
-
-static int rh_state(struct region_hash *rh, region_t region, int may_block)
-{
- int r;
- struct region *reg;
-
- read_lock(&rh->hash_lock);
- reg = __rh_lookup(rh, region);
- read_unlock(&rh->hash_lock);
-
- if (reg)
- return reg->state;
-
- /*
- * The region wasn't in the hash, so we fall back to the
- * dirty log.
- */
- r = rh->log->type->in_sync(rh->log, region, may_block);
-
- /*
- * Any error from the dirty log (eg. -EWOULDBLOCK) gets
- * taken as a RH_NOSYNC
- */
- return r == 1 ? RH_CLEAN : RH_NOSYNC;
-}
-
-static inline int rh_in_sync(struct region_hash *rh,
- region_t region, int may_block)
-{
- int state = rh_state(rh, region, may_block);
- return state == RH_CLEAN || state == RH_DIRTY;
-}
-
-static void dispatch_bios(struct mirror_set *ms, struct bio_list *bio_list)
-{
- struct bio *bio;
-
- while ((bio = bio_list_pop(bio_list))) {
- queue_bio(ms, bio, WRITE);
- }
-}
-
-static void complete_resync_work(struct region *reg, int success)
-{
- struct region_hash *rh = reg->rh;
-
- rh->log->type->set_region_sync(rh->log, reg->key, success);
-
- /*
- * Dispatch the bios before we call 'wake_up_all'.
- * This is important because if we are suspending,
- * we want to know that recovery is complete and
- * the work queue is flushed. If we wake_up_all
- * before we dispatch_bios (queue bios and call wake()),
- * then we risk suspending before the work queue
- * has been properly flushed.
- */
- dispatch_bios(rh->ms, ®->delayed_bios);
- if (atomic_dec_and_test(&rh->recovery_in_flight))
- wake_up_all(&_kmirrord_recovery_stopped);
- up(&rh->recovery_count);
-}
-
-static void rh_update_states(struct region_hash *rh)
-{
- struct region *reg, *next;
-
- LIST_HEAD(clean);
- LIST_HEAD(recovered);
- LIST_HEAD(failed_recovered);
-
- /*
- * Quickly grab the lists.
- */
- write_lock_irq(&rh->hash_lock);
- spin_lock(&rh->region_lock);
- if (!list_empty(&rh->clean_regions)) {
- list_splice_init(&rh->clean_regions, &clean);
-
- list_for_each_entry(reg, &clean, list)
- list_del(®->hash_list);
- }
-
- if (!list_empty(&rh->recovered_regions)) {
- list_splice_init(&rh->recovered_regions, &recovered);
-
- list_for_each_entry (reg, &recovered, list)
- list_del(®->hash_list);
- }
-
- if (!list_empty(&rh->failed_recovered_regions)) {
- list_splice_init(&rh->failed_recovered_regions,
- &failed_recovered);
-
- list_for_each_entry(reg, &failed_recovered, list)
- list_del(®->hash_list);
- }
-
- spin_unlock(&rh->region_lock);
- write_unlock_irq(&rh->hash_lock);
-
- /*
- * All the regions on the recovered and clean lists have
- * now been pulled out of the system, so no need to do
- * any more locking.
- */
- list_for_each_entry_safe (reg, next, &recovered, list) {
- rh->log->type->clear_region(rh->log, reg->key);
- complete_resync_work(reg, 1);
- mempool_free(reg, rh->region_pool);
- }
-
- list_for_each_entry_safe(reg, next, &failed_recovered, list) {
- complete_resync_work(reg, errors_handled(rh->ms) ? 0 : 1);
- mempool_free(reg, rh->region_pool);
- }
-
- list_for_each_entry_safe(reg, next, &clean, list) {
- rh->log->type->clear_region(rh->log, reg->key);
- mempool_free(reg, rh->region_pool);
- }
-
- rh->log->type->flush(rh->log);
-}
-
-static void rh_inc(struct region_hash *rh, region_t region)
-{
- struct region *reg;
-
- read_lock(&rh->hash_lock);
- reg = __rh_find(rh, region);
-
- spin_lock_irq(&rh->region_lock);
- atomic_inc(®->pending);
-
- if (reg->state == RH_CLEAN) {
- reg->state = RH_DIRTY;
- list_del_init(®->list); /* take off the clean list */
- spin_unlock_irq(&rh->region_lock);
-
- rh->log->type->mark_region(rh->log, reg->key);
- } else
- spin_unlock_irq(&rh->region_lock);
-
-
- read_unlock(&rh->hash_lock);
-}
-
-static void rh_inc_pending(struct region_hash *rh, struct bio_list *bios)
-{
- struct bio *bio;
-
- for (bio = bios->head; bio; bio = bio->bi_next)
- rh_inc(rh, bio_to_region(rh, bio));
-}
-
-static void rh_dec(struct region_hash *rh, region_t region)
+static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw)
{
unsigned long flags;
- struct region *reg;
int should_wake = 0;
+ struct bio_list *bl;
- read_lock(&rh->hash_lock);
- reg = __rh_lookup(rh, region);
- read_unlock(&rh->hash_lock);
-
- spin_lock_irqsave(&rh->region_lock, flags);
- if (atomic_dec_and_test(®->pending)) {
- /*
- * There is no pending I/O for this region.
- * We can move the region to corresponding list for next action.
- * At this point, the region is not yet connected to any list.
- *
- * If the state is RH_NOSYNC, the region should be kept off
- * from clean list.
- * The hash entry for RH_NOSYNC will remain in memory
- * until the region is recovered or the map is reloaded.
- */
-
- /* do nothing for RH_NOSYNC */
- if (reg->state == RH_RECOVERING) {
- list_add_tail(®->list, &rh->quiesced_regions);
- } else if (reg->state == RH_DIRTY) {
- reg->state = RH_CLEAN;
- list_add(®->list, &rh->clean_regions);
- }
- should_wake = 1;
- }
- spin_unlock_irqrestore(&rh->region_lock, flags);
+ bl = (rw == WRITE) ? &ms->writes : &ms->reads;
+ spin_lock_irqsave(&ms->lock, flags);
+ should_wake = !(bl->head);
+ bio_list_add(bl, bio);
+ spin_unlock_irqrestore(&ms->lock, flags);
if (should_wake)
- wake(rh->ms);
-}
-
-/*
- * Starts quiescing a region in preparation for recovery.
- */
-static int __rh_recovery_prepare(struct region_hash *rh)
-{
- int r;
- struct region *reg;
- region_t region;
-
- /*
- * Ask the dirty log what's next.
- */
- r = rh->log->type->get_resync_work(rh->log, ®ion);
- if (r <= 0)
- return r;
-
- /*
- * Get this region, and start it quiescing by setting the
- * recovering flag.
- */
- read_lock(&rh->hash_lock);
- reg = __rh_find(rh, region);
- read_unlock(&rh->hash_lock);
-
- spin_lock_irq(&rh->region_lock);
- reg->state = RH_RECOVERING;
-
- /* Already quiesced ? */
- if (atomic_read(®->pending))
- list_del_init(®->list);
- else
- list_move(®->list, &rh->quiesced_regions);
-
- spin_unlock_irq(&rh->region_lock);
-
- return 1;
-}
-
-static void rh_recovery_prepare(struct region_hash *rh)
-{
- /* Extra reference to avoid race with rh_stop_recovery */
- atomic_inc(&rh->recovery_in_flight);
-
- while (!down_trylock(&rh->recovery_count)) {
- atomic_inc(&rh->recovery_in_flight);
- if (__rh_recovery_prepare(rh) <= 0) {
- atomic_dec(&rh->recovery_in_flight);
- up(&rh->recovery_count);
- break;
- }
- }
-
- /* Drop the extra reference */
- if (atomic_dec_and_test(&rh->recovery_in_flight))
- wake_up_all(&_kmirrord_recovery_stopped);
-}
-
-/*
- * Returns any quiesced regions.
- */
-static struct region *rh_recovery_start(struct region_hash *rh)
-{
- struct region *reg = NULL;
-
- spin_lock_irq(&rh->region_lock);
- if (!list_empty(&rh->quiesced_regions)) {
- reg = list_entry(rh->quiesced_regions.next,
- struct region, list);
- list_del_init(®->list); /* remove from the quiesced list */
- }
- spin_unlock_irq(&rh->region_lock);
-
- return reg;
-}
-
-static void rh_recovery_end(struct region *reg, int success)
-{
- struct region_hash *rh = reg->rh;
-
- spin_lock_irq(&rh->region_lock);
- if (success)
- list_add(®->list, ®->rh->recovered_regions);
- else {
- reg->state = RH_NOSYNC;
- list_add(®->list, ®->rh->failed_recovered_regions);
- }
- spin_unlock_irq(&rh->region_lock);
-
- wake(rh->ms);
+ wakeup_mirrord(ms);
}
-static int rh_flush(struct region_hash *rh)
+static void dispatch_bios(void *context, struct bio_list *bio_list)
{
- return rh->log->type->flush(rh->log);
-}
-
-static void rh_delay(struct region_hash *rh, struct bio *bio)
-{
- struct region *reg;
-
- read_lock(&rh->hash_lock);
- reg = __rh_find(rh, bio_to_region(rh, bio));
- bio_list_add(®->delayed_bios, bio);
- read_unlock(&rh->hash_lock);
-}
-
-static void rh_stop_recovery(struct region_hash *rh)
-{
- int i;
-
- /* wait for any recovering regions */
- for (i = 0; i < MAX_RECOVERY; i++)
- down(&rh->recovery_count);
-}
-
-static void rh_start_recovery(struct region_hash *rh)
-{
- int i;
-
- for (i = 0; i < MAX_RECOVERY; i++)
- up(&rh->recovery_count);
+ struct mirror_set *ms = context;
+ struct bio *bio;
- wake(rh->ms);
+ while ((bio = bio_list_pop(bio_list)))
+ queue_bio(ms, bio, WRITE);
}
#define MIN_READ_RECORDS 20
static void recovery_complete(int read_err, unsigned long write_err,
void *context)
{
- struct region *reg = (struct region *)context;
- struct mirror_set *ms = reg->rh->ms;
+ struct dm_region *reg = context;
+ struct mirror_set *ms = dm_rh_region_context(reg);
int m, bit = 0;
if (read_err) {
}
}
- rh_recovery_end(reg, !(read_err || write_err));
+ dm_rh_recovery_end(reg, !(read_err || write_err));
}
-static int recover(struct mirror_set *ms, struct region *reg)
+static int recover(struct mirror_set *ms, struct dm_region *reg)
{
int r;
- unsigned int i;
+ unsigned i;
struct dm_io_region from, to[DM_KCOPYD_MAX_REGIONS], *dest;
struct mirror *m;
unsigned long flags = 0;
+ region_t key = dm_rh_get_region_key(reg);
+ sector_t region_size = dm_rh_get_region_size(ms->rh);
/* fill in the source */
m = get_default_mirror(ms);
from.bdev = m->dev->bdev;
- from.sector = m->offset + region_to_sector(reg->rh, reg->key);
- if (reg->key == (ms->nr_regions - 1)) {
+ from.sector = m->offset + dm_rh_region_to_sector(ms->rh, key);
+ if (key == (ms->nr_regions - 1)) {
/*
* The final region may be smaller than
* region_size.
*/
- from.count = ms->ti->len & (reg->rh->region_size - 1);
+ from.count = ms->ti->len & (region_size - 1);
if (!from.count)
- from.count = reg->rh->region_size;
+ from.count = region_size;
} else
- from.count = reg->rh->region_size;
+ from.count = region_size;
/* fill in the destinations */
for (i = 0, dest = to; i < ms->nr_mirrors; i++) {
m = ms->mirror + i;
dest->bdev = m->dev->bdev;
- dest->sector = m->offset + region_to_sector(reg->rh, reg->key);
+ dest->sector = m->offset + dm_rh_region_to_sector(ms->rh, key);
dest->count = from.count;
dest++;
}
static void do_recovery(struct mirror_set *ms)
{
+ struct dm_region *reg;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
int r;
- struct region *reg;
- struct dm_dirty_log *log = ms->rh.log;
/*
* Start quiescing some regions.
*/
- rh_recovery_prepare(&ms->rh);
+ dm_rh_recovery_prepare(ms->rh);
/*
* Copy any already quiesced regions.
*/
- while ((reg = rh_recovery_start(&ms->rh))) {
+ while ((reg = dm_rh_recovery_start(ms->rh))) {
r = recover(ms, reg);
if (r)
- rh_recovery_end(reg, 0);
+ dm_rh_recovery_end(reg, 0);
}
/*
static int mirror_available(struct mirror_set *ms, struct bio *bio)
{
- region_t region = bio_to_region(&ms->rh, bio);
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
+ region_t region = dm_rh_bio_to_region(ms->rh, bio);
- if (ms->rh.log->type->in_sync(ms->rh.log, region, 0))
+ if (log->type->in_sync(log, region, 0))
return choose_mirror(ms, bio->bi_sector) ? 1 : 0;
return 0;
map_region(&io, m, bio);
bio_set_m(bio, m);
- (void) dm_io(&io_req, 1, &io, NULL);
+ BUG_ON(dm_io(&io_req, 1, &io, NULL));
+}
+
+static inline int region_in_sync(struct mirror_set *ms, region_t region,
+ int may_block)
+{
+ int state = dm_rh_get_state(ms->rh, region, may_block);
+ return state == DM_RH_CLEAN || state == DM_RH_DIRTY;
}
static void do_reads(struct mirror_set *ms, struct bio_list *reads)
struct mirror *m;
while ((bio = bio_list_pop(reads))) {
- region = bio_to_region(&ms->rh, bio);
+ region = dm_rh_bio_to_region(ms->rh, bio);
m = get_default_mirror(ms);
/*
* We can only read balance if the region is in sync.
*/
- if (likely(rh_in_sync(&ms->rh, region, 1)))
+ if (likely(region_in_sync(ms, region, 1)))
m = choose_mirror(ms, bio->bi_sector);
else if (m && atomic_read(&m->error_count))
m = NULL;
* NOSYNC: increment pending, just write to the default mirror
*---------------------------------------------------------------*/
-/* __bio_mark_nosync
- * @ms
- * @bio
- * @done
- * @error
- *
- * The bio was written on some mirror(s) but failed on other mirror(s).
- * We can successfully endio the bio but should avoid the region being
- * marked clean by setting the state RH_NOSYNC.
- *
- * This function is _not_ safe in interrupt context!
- */
-static void __bio_mark_nosync(struct mirror_set *ms,
- struct bio *bio, unsigned done, int error)
-{
- unsigned long flags;
- struct region_hash *rh = &ms->rh;
- struct dm_dirty_log *log = ms->rh.log;
- struct region *reg;
- region_t region = bio_to_region(rh, bio);
- int recovering = 0;
-
- /* We must inform the log that the sync count has changed. */
- log->type->set_region_sync(log, region, 0);
- ms->in_sync = 0;
-
- read_lock(&rh->hash_lock);
- reg = __rh_find(rh, region);
- read_unlock(&rh->hash_lock);
-
- /* region hash entry should exist because write was in-flight */
- BUG_ON(!reg);
- BUG_ON(!list_empty(®->list));
-
- spin_lock_irqsave(&rh->region_lock, flags);
- /*
- * Possible cases:
- * 1) RH_DIRTY
- * 2) RH_NOSYNC: was dirty, other preceeding writes failed
- * 3) RH_RECOVERING: flushing pending writes
- * Either case, the region should have not been connected to list.
- */
- recovering = (reg->state == RH_RECOVERING);
- reg->state = RH_NOSYNC;
- BUG_ON(!list_empty(®->list));
- spin_unlock_irqrestore(&rh->region_lock, flags);
-
- bio_endio(bio, error);
- if (recovering)
- complete_resync_work(reg, 0);
-}
static void write_callback(unsigned long error, void *context)
{
bio_list_add(&ms->failures, bio);
spin_unlock_irqrestore(&ms->lock, flags);
if (should_wake)
- wake(ms);
+ wakeup_mirrord(ms);
return;
}
out:
*/
bio_set_m(bio, get_default_mirror(ms));
- (void) dm_io(&io_req, ms->nr_mirrors, io, NULL);
+ BUG_ON(dm_io(&io_req, ms->nr_mirrors, io, NULL));
}
static void do_writes(struct mirror_set *ms, struct bio_list *writes)
bio_list_init(&recover);
while ((bio = bio_list_pop(writes))) {
- state = rh_state(&ms->rh, bio_to_region(&ms->rh, bio), 1);
+ state = dm_rh_get_state(ms->rh,
+ dm_rh_bio_to_region(ms->rh, bio), 1);
switch (state) {
- case RH_CLEAN:
- case RH_DIRTY:
+ case DM_RH_CLEAN:
+ case DM_RH_DIRTY:
this_list = &sync;
break;
- case RH_NOSYNC:
+ case DM_RH_NOSYNC:
this_list = &nosync;
break;
- case RH_RECOVERING:
+ case DM_RH_RECOVERING:
this_list = &recover;
break;
}
* be written to (writes to recover regions are going to
* be delayed).
*/
- rh_inc_pending(&ms->rh, &sync);
- rh_inc_pending(&ms->rh, &nosync);
- ms->log_failure = rh_flush(&ms->rh) ? 1 : 0;
+ dm_rh_inc_pending(ms->rh, &sync);
+ dm_rh_inc_pending(ms->rh, &nosync);
+ ms->log_failure = dm_rh_flush(ms->rh) ? 1 : 0;
/*
* Dispatch io.
spin_lock_irq(&ms->lock);
bio_list_merge(&ms->failures, &sync);
spin_unlock_irq(&ms->lock);
- wake(ms);
+ wakeup_mirrord(ms);
} else
while ((bio = bio_list_pop(&sync)))
do_write(ms, bio);
while ((bio = bio_list_pop(&recover)))
- rh_delay(&ms->rh, bio);
+ dm_rh_delay(ms->rh, bio);
while ((bio = bio_list_pop(&nosync))) {
map_bio(get_default_mirror(ms), bio);
if (!ms->log_failure) {
while ((bio = bio_list_pop(failures)))
- __bio_mark_nosync(ms, bio, bio->bi_size, 0);
+ ms->in_sync = 0;
+ dm_rh_mark_nosync(ms->rh, bio, bio->bi_size, 0);
return;
}
*---------------------------------------------------------------*/
static void do_mirror(struct work_struct *work)
{
- struct mirror_set *ms =container_of(work, struct mirror_set,
- kmirrord_work);
+ struct mirror_set *ms = container_of(work, struct mirror_set,
+ kmirrord_work);
struct bio_list reads, writes, failures;
unsigned long flags;
bio_list_init(&ms->failures);
spin_unlock_irqrestore(&ms->lock, flags);
- rh_update_states(&ms->rh);
+ dm_rh_update_states(ms->rh, errors_handled(ms));
do_recovery(ms);
do_reads(ms, &reads);
do_writes(ms, &writes);
dm_table_unplug_all(ms->ti->table);
}
-
/*-----------------------------------------------------------------
* Target functions
*---------------------------------------------------------------*/
size_t len;
struct mirror_set *ms = NULL;
- if (array_too_big(sizeof(*ms), sizeof(ms->mirror[0]), nr_mirrors))
- return NULL;
-
len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
ms = kzalloc(len, GFP_KERNEL);
return NULL;
}
- if (rh_init(&ms->rh, ms, dl, region_size, ms->nr_regions)) {
+ ms->rh = dm_region_hash_create(ms, dispatch_bios, wakeup_mirrord,
+ wakeup_all_recovery_waiters,
+ ms->ti->begin, MAX_RECOVERY,
+ dl, region_size, ms->nr_regions);
+ if (IS_ERR(ms->rh)) {
ti->error = "Error creating dirty region hash";
dm_io_client_destroy(ms->io_client);
mempool_destroy(ms->read_record_pool);
dm_put_device(ti, ms->mirror[m].dev);
dm_io_client_destroy(ms->io_client);
- rh_exit(&ms->rh);
+ dm_region_hash_destroy(ms->rh);
mempool_destroy(ms->read_record_pool);
kfree(ms);
}
* Create dirty log: log_type #log_params <log_params>
*/
static struct dm_dirty_log *create_dirty_log(struct dm_target *ti,
- unsigned int argc, char **argv,
- unsigned int *args_used)
+ unsigned argc, char **argv,
+ unsigned *args_used)
{
- unsigned int param_count;
+ unsigned param_count;
struct dm_dirty_log *dl;
if (argc < 2) {
}
ti->private = ms;
- ti->split_io = ms->rh.region_size;
+ ti->split_io = dm_rh_get_region_size(ms->rh);
ms->kmirrord_wq = create_singlethread_workqueue("kmirrord");
if (!ms->kmirrord_wq) {
goto err_destroy_wq;
}
- r = dm_kcopyd_client_create(DM_IO_PAGES, &ms->kcopyd_client);
+ r = dm_kcopyd_client_create(DM_KCOPYD_PAGES, &ms->kcopyd_client);
if (r)
goto err_destroy_wq;
- wake(ms);
+ wakeup_mirrord(ms);
return 0;
err_destroy_wq:
free_context(ms, ti, ms->nr_mirrors);
}
-static void queue_bio(struct mirror_set *ms, struct bio *bio, int rw)
-{
- unsigned long flags;
- int should_wake = 0;
- struct bio_list *bl;
-
- bl = (rw == WRITE) ? &ms->writes : &ms->reads;
- spin_lock_irqsave(&ms->lock, flags);
- should_wake = !(bl->head);
- bio_list_add(bl, bio);
- spin_unlock_irqrestore(&ms->lock, flags);
-
- if (should_wake)
- wake(ms);
-}
-
/*
* Mirror mapping function
*/
struct mirror *m;
struct mirror_set *ms = ti->private;
struct dm_raid1_read_record *read_record = NULL;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
if (rw == WRITE) {
/* Save region for mirror_end_io() handler */
- map_context->ll = bio_to_region(&ms->rh, bio);
+ map_context->ll = dm_rh_bio_to_region(ms->rh, bio);
queue_bio(ms, bio, rw);
return DM_MAPIO_SUBMITTED;
}
- r = ms->rh.log->type->in_sync(ms->rh.log,
- bio_to_region(&ms->rh, bio), 0);
+ r = log->type->in_sync(log, dm_rh_bio_to_region(ms->rh, bio), 0);
if (r < 0 && r != -EWOULDBLOCK)
return r;
* We need to dec pending if this was a write.
*/
if (rw == WRITE) {
- rh_dec(&ms->rh, map_context->ll);
+ dm_rh_dec(ms->rh, map_context->ll);
return error;
}
static void mirror_presuspend(struct dm_target *ti)
{
struct mirror_set *ms = (struct mirror_set *) ti->private;
- struct dm_dirty_log *log = ms->rh.log;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
atomic_set(&ms->suspend, 1);
* We must finish up all the work that we've
* generated (i.e. recovery work).
*/
- rh_stop_recovery(&ms->rh);
+ dm_rh_stop_recovery(ms->rh);
wait_event(_kmirrord_recovery_stopped,
- !atomic_read(&ms->rh.recovery_in_flight));
+ !dm_rh_recovery_in_flight(ms->rh));
if (log->type->presuspend && log->type->presuspend(log))
/* FIXME: need better error handling */
static void mirror_postsuspend(struct dm_target *ti)
{
struct mirror_set *ms = ti->private;
- struct dm_dirty_log *log = ms->rh.log;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
if (log->type->postsuspend && log->type->postsuspend(log))
/* FIXME: need better error handling */
static void mirror_resume(struct dm_target *ti)
{
struct mirror_set *ms = ti->private;
- struct dm_dirty_log *log = ms->rh.log;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
atomic_set(&ms->suspend, 0);
if (log->type->resume && log->type->resume(log))
/* FIXME: need better error handling */
DMWARN("log resume failed");
- rh_start_recovery(&ms->rh);
+ dm_rh_start_recovery(ms->rh);
}
/*
{
unsigned int m, sz = 0;
struct mirror_set *ms = (struct mirror_set *) ti->private;
- struct dm_dirty_log *log = ms->rh.log;
+ struct dm_dirty_log *log = dm_rh_dirty_log(ms->rh);
char buffer[ms->nr_mirrors + 1];
switch (type) {
buffer[m] = '\0';
DMEMIT("%llu/%llu 1 %s ",
- (unsigned long long)log->type->get_sync_count(ms->rh.log),
+ (unsigned long long)log->type->get_sync_count(log),
(unsigned long long)ms->nr_regions, buffer);
- sz += log->type->status(ms->rh.log, type, result+sz, maxlen-sz);
+ sz += log->type->status(log, type, result+sz, maxlen-sz);
break;
case STATUSTYPE_TABLE:
- sz = log->type->status(ms->rh.log, type, result, maxlen);
+ sz = log->type->status(log, type, result, maxlen);
DMEMIT("%d", ms->nr_mirrors);
for (m = 0; m < ms->nr_mirrors; m++)
--- /dev/null
+/*
+ * Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ *
+ * This file is released under the GPL.
+ */
+
+#include <linux/dm-dirty-log.h>
+#include <linux/dm-region-hash.h>
+
+#include <linux/ctype.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/vmalloc.h>
+
+#include "dm.h"
+#include "dm-bio-list.h"
+
+#define DM_MSG_PREFIX "region hash"
+
+/*-----------------------------------------------------------------
+ * Region hash
+ *
+ * The mirror splits itself up into discrete regions. Each
+ * region can be in one of three states: clean, dirty,
+ * nosync. There is no need to put clean regions in the hash.
+ *
+ * In addition to being present in the hash table a region _may_
+ * be present on one of three lists.
+ *
+ * clean_regions: Regions on this list have no io pending to
+ * them, they are in sync, we are no longer interested in them,
+ * they are dull. dm_rh_update_states() will remove them from the
+ * hash table.
+ *
+ * quiesced_regions: These regions have been spun down, ready
+ * for recovery. rh_recovery_start() will remove regions from
+ * this list and hand them to kmirrord, which will schedule the
+ * recovery io with kcopyd.
+ *
+ * recovered_regions: Regions that kcopyd has successfully
+ * recovered. dm_rh_update_states() will now schedule any delayed
+ * io, up the recovery_count, and remove the region from the
+ * hash.
+ *
+ * There are 2 locks:
+ * A rw spin lock 'hash_lock' protects just the hash table,
+ * this is never held in write mode from interrupt context,
+ * which I believe means that we only have to disable irqs when
+ * doing a write lock.
+ *
+ * An ordinary spin lock 'region_lock' that protects the three
+ * lists in the region_hash, with the 'state', 'list' and
+ * 'delayed_bios' fields of the regions. This is used from irq
+ * context, so all other uses will have to suspend local irqs.
+ *---------------------------------------------------------------*/
+struct dm_region_hash {
+ uint32_t region_size;
+ unsigned region_shift;
+
+ /* holds persistent region state */
+ struct dm_dirty_log *log;
+
+ /* hash table */
+ rwlock_t hash_lock;
+ mempool_t *region_pool;
+ unsigned mask;
+ unsigned nr_buckets;
+ unsigned prime;
+ unsigned shift;
+ struct list_head *buckets;
+
+ unsigned max_recovery; /* Max # of regions to recover in parallel */
+
+ spinlock_t region_lock;
+ atomic_t recovery_in_flight;
+ struct semaphore recovery_count;
+ struct list_head clean_regions;
+ struct list_head quiesced_regions;
+ struct list_head recovered_regions;
+ struct list_head failed_recovered_regions;
+
+ void *context;
+ sector_t target_begin;
+
+ /* Callback function to schedule bios writes */
+ void (*dispatch_bios)(void *context, struct bio_list *bios);
+
+ /* Callback function to wakeup callers worker thread. */
+ void (*wakeup_workers)(void *context);
+
+ /* Callback function to wakeup callers recovery waiters. */
+ void (*wakeup_all_recovery_waiters)(void *context);
+};
+
+struct dm_region {
+ struct dm_region_hash *rh; /* FIXME: can we get rid of this ? */
+ region_t key;
+ int state;
+
+ struct list_head hash_list;
+ struct list_head list;
+
+ atomic_t pending;
+ struct bio_list delayed_bios;
+};
+
+/*
+ * Conversion fns
+ */
+static region_t dm_rh_sector_to_region(struct dm_region_hash *rh, sector_t sector)
+{
+ return sector >> rh->region_shift;
+}
+
+sector_t dm_rh_region_to_sector(struct dm_region_hash *rh, region_t region)
+{
+ return region << rh->region_shift;
+}
+EXPORT_SYMBOL_GPL(dm_rh_region_to_sector);
+
+region_t dm_rh_bio_to_region(struct dm_region_hash *rh, struct bio *bio)
+{
+ return dm_rh_sector_to_region(rh, bio->bi_sector - rh->target_begin);
+}
+EXPORT_SYMBOL_GPL(dm_rh_bio_to_region);
+
+void *dm_rh_region_context(struct dm_region *reg)
+{
+ return reg->rh->context;
+}
+EXPORT_SYMBOL_GPL(dm_rh_region_context);
+
+region_t dm_rh_get_region_key(struct dm_region *reg)
+{
+ return reg->key;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_region_key);
+
+sector_t dm_rh_get_region_size(struct dm_region_hash *rh)
+{
+ return rh->region_size;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_region_size);
+
+/*
+ * FIXME: shall we pass in a structure instead of all these args to
+ * dm_region_hash_create()????
+ */
+#define RH_HASH_MULT 2654435387U
+#define RH_HASH_SHIFT 12
+
+#define MIN_REGIONS 64
+struct dm_region_hash *dm_region_hash_create(
+ void *context, void (*dispatch_bios)(void *context,
+ struct bio_list *bios),
+ void (*wakeup_workers)(void *context),
+ void (*wakeup_all_recovery_waiters)(void *context),
+ sector_t target_begin, unsigned max_recovery,
+ struct dm_dirty_log *log, uint32_t region_size,
+ region_t nr_regions)
+{
+ struct dm_region_hash *rh;
+ unsigned nr_buckets, max_buckets;
+ size_t i;
+
+ /*
+ * Calculate a suitable number of buckets for our hash
+ * table.
+ */
+ max_buckets = nr_regions >> 6;
+ for (nr_buckets = 128u; nr_buckets < max_buckets; nr_buckets <<= 1)
+ ;
+ nr_buckets >>= 1;
+
+ rh = kmalloc(sizeof(*rh), GFP_KERNEL);
+ if (!rh) {
+ DMERR("unable to allocate region hash memory");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ rh->context = context;
+ rh->dispatch_bios = dispatch_bios;
+ rh->wakeup_workers = wakeup_workers;
+ rh->wakeup_all_recovery_waiters = wakeup_all_recovery_waiters;
+ rh->target_begin = target_begin;
+ rh->max_recovery = max_recovery;
+ rh->log = log;
+ rh->region_size = region_size;
+ rh->region_shift = ffs(region_size) - 1;
+ rwlock_init(&rh->hash_lock);
+ rh->mask = nr_buckets - 1;
+ rh->nr_buckets = nr_buckets;
+
+ rh->shift = RH_HASH_SHIFT;
+ rh->prime = RH_HASH_MULT;
+
+ rh->buckets = vmalloc(nr_buckets * sizeof(*rh->buckets));
+ if (!rh->buckets) {
+ DMERR("unable to allocate region hash bucket memory");
+ kfree(rh);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ for (i = 0; i < nr_buckets; i++)
+ INIT_LIST_HEAD(rh->buckets + i);
+
+ spin_lock_init(&rh->region_lock);
+ sema_init(&rh->recovery_count, 0);
+ atomic_set(&rh->recovery_in_flight, 0);
+ INIT_LIST_HEAD(&rh->clean_regions);
+ INIT_LIST_HEAD(&rh->quiesced_regions);
+ INIT_LIST_HEAD(&rh->recovered_regions);
+ INIT_LIST_HEAD(&rh->failed_recovered_regions);
+
+ rh->region_pool = mempool_create_kmalloc_pool(MIN_REGIONS,
+ sizeof(struct dm_region));
+ if (!rh->region_pool) {
+ vfree(rh->buckets);
+ kfree(rh);
+ rh = ERR_PTR(-ENOMEM);
+ }
+
+ return rh;
+}
+EXPORT_SYMBOL_GPL(dm_region_hash_create);
+
+void dm_region_hash_destroy(struct dm_region_hash *rh)
+{
+ unsigned h;
+ struct dm_region *reg, *nreg;
+
+ BUG_ON(!list_empty(&rh->quiesced_regions));
+ for (h = 0; h < rh->nr_buckets; h++) {
+ list_for_each_entry_safe(reg, nreg, rh->buckets + h,
+ hash_list) {
+ BUG_ON(atomic_read(®->pending));
+ mempool_free(reg, rh->region_pool);
+ }
+ }
+
+ if (rh->log)
+ dm_dirty_log_destroy(rh->log);
+
+ if (rh->region_pool)
+ mempool_destroy(rh->region_pool);
+
+ vfree(rh->buckets);
+ kfree(rh);
+}
+EXPORT_SYMBOL_GPL(dm_region_hash_destroy);
+
+struct dm_dirty_log *dm_rh_dirty_log(struct dm_region_hash *rh)
+{
+ return rh->log;
+}
+EXPORT_SYMBOL_GPL(dm_rh_dirty_log);
+
+static unsigned rh_hash(struct dm_region_hash *rh, region_t region)
+{
+ return (unsigned) ((region * rh->prime) >> rh->shift) & rh->mask;
+}
+
+static struct dm_region *__rh_lookup(struct dm_region_hash *rh, region_t region)
+{
+ struct dm_region *reg;
+ struct list_head *bucket = rh->buckets + rh_hash(rh, region);
+
+ list_for_each_entry(reg, bucket, hash_list)
+ if (reg->key == region)
+ return reg;
+
+ return NULL;
+}
+
+static void __rh_insert(struct dm_region_hash *rh, struct dm_region *reg)
+{
+ list_add(®->hash_list, rh->buckets + rh_hash(rh, reg->key));
+}
+
+static struct dm_region *__rh_alloc(struct dm_region_hash *rh, region_t region)
+{
+ struct dm_region *reg, *nreg;
+
+ nreg = mempool_alloc(rh->region_pool, GFP_ATOMIC);
+ if (unlikely(!nreg))
+ nreg = kmalloc(sizeof(*nreg), GFP_NOIO);
+
+ nreg->state = rh->log->type->in_sync(rh->log, region, 1) ?
+ DM_RH_CLEAN : DM_RH_NOSYNC;
+ nreg->rh = rh;
+ nreg->key = region;
+ INIT_LIST_HEAD(&nreg->list);
+ atomic_set(&nreg->pending, 0);
+ bio_list_init(&nreg->delayed_bios);
+
+ write_lock_irq(&rh->hash_lock);
+ reg = __rh_lookup(rh, region);
+ if (reg)
+ /* We lost the race. */
+ mempool_free(nreg, rh->region_pool);
+ else {
+ __rh_insert(rh, nreg);
+ if (nreg->state == DM_RH_CLEAN) {
+ spin_lock(&rh->region_lock);
+ list_add(&nreg->list, &rh->clean_regions);
+ spin_unlock(&rh->region_lock);
+ }
+
+ reg = nreg;
+ }
+ write_unlock_irq(&rh->hash_lock);
+
+ return reg;
+}
+
+static struct dm_region *__rh_find(struct dm_region_hash *rh, region_t region)
+{
+ struct dm_region *reg;
+
+ reg = __rh_lookup(rh, region);
+ if (!reg) {
+ read_unlock(&rh->hash_lock);
+ reg = __rh_alloc(rh, region);
+ read_lock(&rh->hash_lock);
+ }
+
+ return reg;
+}
+
+int dm_rh_get_state(struct dm_region_hash *rh, region_t region, int may_block)
+{
+ int r;
+ struct dm_region *reg;
+
+ read_lock(&rh->hash_lock);
+ reg = __rh_lookup(rh, region);
+ read_unlock(&rh->hash_lock);
+
+ if (reg)
+ return reg->state;
+
+ /*
+ * The region wasn't in the hash, so we fall back to the
+ * dirty log.
+ */
+ r = rh->log->type->in_sync(rh->log, region, may_block);
+
+ /*
+ * Any error from the dirty log (eg. -EWOULDBLOCK) gets
+ * taken as a DM_RH_NOSYNC
+ */
+ return r == 1 ? DM_RH_CLEAN : DM_RH_NOSYNC;
+}
+EXPORT_SYMBOL_GPL(dm_rh_get_state);
+
+static void complete_resync_work(struct dm_region *reg, int success)
+{
+ struct dm_region_hash *rh = reg->rh;
+
+ rh->log->type->set_region_sync(rh->log, reg->key, success);
+
+ /*
+ * Dispatch the bios before we call 'wake_up_all'.
+ * This is important because if we are suspending,
+ * we want to know that recovery is complete and
+ * the work queue is flushed. If we wake_up_all
+ * before we dispatch_bios (queue bios and call wake()),
+ * then we risk suspending before the work queue
+ * has been properly flushed.
+ */
+ rh->dispatch_bios(rh->context, ®->delayed_bios);
+ if (atomic_dec_and_test(&rh->recovery_in_flight))
+ rh->wakeup_all_recovery_waiters(rh->context);
+ up(&rh->recovery_count);
+}
+
+/* dm_rh_mark_nosync
+ * @ms
+ * @bio
+ * @done
+ * @error
+ *
+ * The bio was written on some mirror(s) but failed on other mirror(s).
+ * We can successfully endio the bio but should avoid the region being
+ * marked clean by setting the state DM_RH_NOSYNC.
+ *
+ * This function is _not_ safe in interrupt context!
+ */
+void dm_rh_mark_nosync(struct dm_region_hash *rh,
+ struct bio *bio, unsigned done, int error)
+{
+ unsigned long flags;
+ struct dm_dirty_log *log = rh->log;
+ struct dm_region *reg;
+ region_t region = dm_rh_bio_to_region(rh, bio);
+ int recovering = 0;
+
+ /* We must inform the log that the sync count has changed. */
+ log->type->set_region_sync(log, region, 0);
+
+ read_lock(&rh->hash_lock);
+ reg = __rh_find(rh, region);
+ read_unlock(&rh->hash_lock);
+
+ /* region hash entry should exist because write was in-flight */
+ BUG_ON(!reg);
+ BUG_ON(!list_empty(®->list));
+
+ spin_lock_irqsave(&rh->region_lock, flags);
+ /*
+ * Possible cases:
+ * 1) DM_RH_DIRTY
+ * 2) DM_RH_NOSYNC: was dirty, other preceeding writes failed
+ * 3) DM_RH_RECOVERING: flushing pending writes
+ * Either case, the region should have not been connected to list.
+ */
+ recovering = (reg->state == DM_RH_RECOVERING);
+ reg->state = DM_RH_NOSYNC;
+ BUG_ON(!list_empty(®->list));
+ spin_unlock_irqrestore(&rh->region_lock, flags);
+
+ bio_endio(bio, error);
+ if (recovering)
+ complete_resync_work(reg, 0);
+}
+EXPORT_SYMBOL_GPL(dm_rh_mark_nosync);
+
+void dm_rh_update_states(struct dm_region_hash *rh, int errors_handled)
+{
+ struct dm_region *reg, *next;
+
+ LIST_HEAD(clean);
+ LIST_HEAD(recovered);
+ LIST_HEAD(failed_recovered);
+
+ /*
+ * Quickly grab the lists.
+ */
+ write_lock_irq(&rh->hash_lock);
+ spin_lock(&rh->region_lock);
+ if (!list_empty(&rh->clean_regions)) {
+ list_splice_init(&rh->clean_regions, &clean);
+
+ list_for_each_entry(reg, &clean, list)
+ list_del(®->hash_list);
+ }
+
+ if (!list_empty(&rh->recovered_regions)) {
+ list_splice_init(&rh->recovered_regions, &recovered);
+
+ list_for_each_entry(reg, &recovered, list)
+ list_del(®->hash_list);
+ }
+
+ if (!list_empty(&rh->failed_recovered_regions)) {
+ list_splice_init(&rh->failed_recovered_regions,
+ &failed_recovered);
+
+ list_for_each_entry(reg, &failed_recovered, list)
+ list_del(®->hash_list);
+ }
+
+ spin_unlock(&rh->region_lock);
+ write_unlock_irq(&rh->hash_lock);
+
+ /*
+ * All the regions on the recovered and clean lists have
+ * now been pulled out of the system, so no need to do
+ * any more locking.
+ */
+ list_for_each_entry_safe(reg, next, &recovered, list) {
+ rh->log->type->clear_region(rh->log, reg->key);
+ complete_resync_work(reg, 1);
+ mempool_free(reg, rh->region_pool);
+ }
+
+ list_for_each_entry_safe(reg, next, &failed_recovered, list) {
+ complete_resync_work(reg, errors_handled ? 0 : 1);
+ mempool_free(reg, rh->region_pool);
+ }
+
+ list_for_each_entry_safe(reg, next, &clean, list) {
+ rh->log->type->clear_region(rh->log, reg->key);
+ mempool_free(reg, rh->region_pool);
+ }
+
+ rh->log->type->flush(rh->log);
+}
+EXPORT_SYMBOL_GPL(dm_rh_update_states);
+
+static void rh_inc(struct dm_region_hash *rh, region_t region)
+{
+ struct dm_region *reg;
+
+ read_lock(&rh->hash_lock);
+ reg = __rh_find(rh, region);
+
+ spin_lock_irq(&rh->region_lock);
+ atomic_inc(®->pending);
+
+ if (reg->state == DM_RH_CLEAN) {
+ reg->state = DM_RH_DIRTY;
+ list_del_init(®->list); /* take off the clean list */
+ spin_unlock_irq(&rh->region_lock);
+
+ rh->log->type->mark_region(rh->log, reg->key);
+ } else
+ spin_unlock_irq(&rh->region_lock);
+
+
+ read_unlock(&rh->hash_lock);
+}
+
+void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios)
+{
+ struct bio *bio;
+
+ for (bio = bios->head; bio; bio = bio->bi_next)
+ rh_inc(rh, dm_rh_bio_to_region(rh, bio));
+}
+EXPORT_SYMBOL_GPL(dm_rh_inc_pending);
+
+void dm_rh_dec(struct dm_region_hash *rh, region_t region)
+{
+ unsigned long flags;
+ struct dm_region *reg;
+ int should_wake = 0;
+
+ read_lock(&rh->hash_lock);
+ reg = __rh_lookup(rh, region);
+ read_unlock(&rh->hash_lock);
+
+ spin_lock_irqsave(&rh->region_lock, flags);
+ if (atomic_dec_and_test(®->pending)) {
+ /*
+ * There is no pending I/O for this region.
+ * We can move the region to corresponding list for next action.
+ * At this point, the region is not yet connected to any list.
+ *
+ * If the state is DM_RH_NOSYNC, the region should be kept off
+ * from clean list.
+ * The hash entry for DM_RH_NOSYNC will remain in memory
+ * until the region is recovered or the map is reloaded.
+ */
+
+ /* do nothing for DM_RH_NOSYNC */
+ if (reg->state == DM_RH_RECOVERING) {
+ list_add_tail(®->list, &rh->quiesced_regions);
+ } else if (reg->state == DM_RH_DIRTY) {
+ reg->state = DM_RH_CLEAN;
+ list_add(®->list, &rh->clean_regions);
+ }
+ should_wake = 1;
+ }
+ spin_unlock_irqrestore(&rh->region_lock, flags);
+
+ if (should_wake)
+ rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_dec);
+
+/*
+ * Starts quiescing a region in preparation for recovery.
+ */
+static int __rh_recovery_prepare(struct dm_region_hash *rh)
+{
+ int r;
+ region_t region;
+ struct dm_region *reg;
+
+ /*
+ * Ask the dirty log what's next.
+ */
+ r = rh->log->type->get_resync_work(rh->log, ®ion);
+ if (r <= 0)
+ return r;
+
+ /*
+ * Get this region, and start it quiescing by setting the
+ * recovering flag.
+ */
+ read_lock(&rh->hash_lock);
+ reg = __rh_find(rh, region);
+ read_unlock(&rh->hash_lock);
+
+ spin_lock_irq(&rh->region_lock);
+ reg->state = DM_RH_RECOVERING;
+
+ /* Already quiesced ? */
+ if (atomic_read(®->pending))
+ list_del_init(®->list);
+ else
+ list_move(®->list, &rh->quiesced_regions);
+
+ spin_unlock_irq(&rh->region_lock);
+
+ return 1;
+}
+
+void dm_rh_recovery_prepare(struct dm_region_hash *rh)
+{
+ /* Extra reference to avoid race with dm_rh_stop_recovery */
+ atomic_inc(&rh->recovery_in_flight);
+
+ while (!down_trylock(&rh->recovery_count)) {
+ atomic_inc(&rh->recovery_in_flight);
+ if (__rh_recovery_prepare(rh) <= 0) {
+ atomic_dec(&rh->recovery_in_flight);
+ up(&rh->recovery_count);
+ break;
+ }
+ }
+
+ /* Drop the extra reference */
+ if (atomic_dec_and_test(&rh->recovery_in_flight))
+ rh->wakeup_all_recovery_waiters(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_prepare);
+
+/*
+ * Returns any quiesced regions.
+ */
+struct dm_region *dm_rh_recovery_start(struct dm_region_hash *rh)
+{
+ struct dm_region *reg = NULL;
+
+ spin_lock_irq(&rh->region_lock);
+ if (!list_empty(&rh->quiesced_regions)) {
+ reg = list_entry(rh->quiesced_regions.next,
+ struct dm_region, list);
+ list_del_init(®->list); /* remove from the quiesced list */
+ }
+ spin_unlock_irq(&rh->region_lock);
+
+ return reg;
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_start);
+
+void dm_rh_recovery_end(struct dm_region *reg, int success)
+{
+ struct dm_region_hash *rh = reg->rh;
+
+ spin_lock_irq(&rh->region_lock);
+ if (success)
+ list_add(®->list, ®->rh->recovered_regions);
+ else {
+ reg->state = DM_RH_NOSYNC;
+ list_add(®->list, ®->rh->failed_recovered_regions);
+ }
+ spin_unlock_irq(&rh->region_lock);
+
+ rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_end);
+
+/* Return recovery in flight count. */
+int dm_rh_recovery_in_flight(struct dm_region_hash *rh)
+{
+ return atomic_read(&rh->recovery_in_flight);
+}
+EXPORT_SYMBOL_GPL(dm_rh_recovery_in_flight);
+
+int dm_rh_flush(struct dm_region_hash *rh)
+{
+ return rh->log->type->flush(rh->log);
+}
+EXPORT_SYMBOL_GPL(dm_rh_flush);
+
+void dm_rh_delay(struct dm_region_hash *rh, struct bio *bio)
+{
+ struct dm_region *reg;
+
+ read_lock(&rh->hash_lock);
+ reg = __rh_find(rh, dm_rh_bio_to_region(rh, bio));
+ bio_list_add(®->delayed_bios, bio);
+ read_unlock(&rh->hash_lock);
+}
+EXPORT_SYMBOL_GPL(dm_rh_delay);
+
+void dm_rh_stop_recovery(struct dm_region_hash *rh)
+{
+ int i;
+
+ /* wait for any recovering regions */
+ for (i = 0; i < rh->max_recovery; i++)
+ down(&rh->recovery_count);
+}
+EXPORT_SYMBOL_GPL(dm_rh_stop_recovery);
+
+void dm_rh_start_recovery(struct dm_region_hash *rh)
+{
+ int i;
+
+ for (i = 0; i < rh->max_recovery; i++)
+ up(&rh->recovery_count);
+
+ rh->wakeup_workers(rh->context);
+}
+EXPORT_SYMBOL_GPL(dm_rh_start_recovery);
+
+MODULE_DESCRIPTION(DM_NAME " region hash");
+MODULE_AUTHOR("Joe Thornber/Heinz Mauelshagen <dm-devel@redhat.com>");
+MODULE_LICENSE("GPL");
* Round-robin path selector.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
+
#include "dm-path-selector.h"
#include <linux/slab.h>
s->valid = 1;
s->active = 0;
- s->last_percent = 0;
init_rwsem(&s->lock);
spin_lock_init(&s->pe_lock);
s->ti = ti;
* the bios for the original write to the origin.
*/
if (primary_pe &&
- atomic_dec_and_test(&primary_pe->ref_count))
+ atomic_dec_and_test(&primary_pe->ref_count)) {
origin_bios = bio_list_get(&primary_pe->origin_bios);
+ free_pending_exception(primary_pe);
+ }
/*
* Free the pe if it's not linked to an origin write or if
if (!primary_pe || primary_pe != pe)
free_pending_exception(pe);
- /*
- * Free the primary pe if nothing references it.
- */
- if (primary_pe && !atomic_read(&primary_pe->ref_count))
- free_pending_exception(primary_pe);
-
return origin_bios;
}
#ifndef DM_SNAPSHOT_H
#define DM_SNAPSHOT_H
-#include "dm.h"
+#include <linux/device-mapper.h>
#include "dm-bio-list.h"
#include <linux/blkdev.h>
#include <linux/workqueue.h>
/* Used for display of table */
char type;
- /* The last percentage we notified */
- int last_percent;
-
mempool_t *pending_pool;
struct exception_table pending;
* This file is released under the GPL.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
#include <linux/module.h>
#include <linux/init.h>
{
size_t len;
- if (array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
- stripes))
+ if (dm_array_too_big(sizeof(struct stripe_c), sizeof(struct stripe),
+ stripes))
return NULL;
len = sizeof(struct stripe_c) + (sizeof(struct stripe) * stripes);
* This file is released under the GPL.
*/
-#include "dm.h"
+#include <linux/device-mapper.h>
#include <linux/module.h>
#include <linux/init.h>
*/
struct dm_wq_req {
enum {
- DM_WQ_FLUSH_ALL,
DM_WQ_FLUSH_DEFERRED,
} type;
struct work_struct work;
static int __init local_init(void)
{
- int r;
+ int r = -ENOMEM;
/* allocate a slab for the dm_ios */
_io_cache = KMEM_CACHE(dm_io, 0);
if (!_io_cache)
- return -ENOMEM;
+ return r;
/* allocate a slab for the target ios */
_tio_cache = KMEM_CACHE(dm_target_io, 0);
- if (!_tio_cache) {
- kmem_cache_destroy(_io_cache);
- return -ENOMEM;
- }
+ if (!_tio_cache)
+ goto out_free_io_cache;
r = dm_uevent_init();
- if (r) {
- kmem_cache_destroy(_tio_cache);
- kmem_cache_destroy(_io_cache);
- return r;
- }
+ if (r)
+ goto out_free_tio_cache;
_major = major;
r = register_blkdev(_major, _name);
- if (r < 0) {
- kmem_cache_destroy(_tio_cache);
- kmem_cache_destroy(_io_cache);
- dm_uevent_exit();
- return r;
- }
+ if (r < 0)
+ goto out_uevent_exit;
if (!_major)
_major = r;
return 0;
+
+out_uevent_exit:
+ dm_uevent_exit();
+out_free_tio_cache:
+ kmem_cache_destroy(_tio_cache);
+out_free_io_cache:
+ kmem_cache_destroy(_io_cache);
+
+ return r;
}
static void local_exit(void)
clone->bi_size = to_bytes(len);
clone->bi_io_vec->bv_offset = offset;
clone->bi_io_vec->bv_len = clone->bi_size;
+ clone->bi_flags |= 1 << BIO_CLONED;
return clone;
}
down_write(&md->io_lock);
switch (req->type) {
- case DM_WQ_FLUSH_ALL:
- __merge_pushback_list(md);
- /* pass through */
case DM_WQ_FLUSH_DEFERRED:
__flush_deferred_io(md);
break;
if (!md->suspended_bdev) {
DMWARN("bdget failed in dm_suspend");
r = -ENOMEM;
- goto flush_and_out;
+ goto out;
}
/*
set_bit(DMF_SUSPENDED, &md->flags);
-flush_and_out:
- if (r && noflush)
- /*
- * Because there may be already I/Os in the pushback list,
- * flush them before return.
- */
- dm_queue_flush(md, DM_WQ_FLUSH_ALL, NULL);
-
out:
if (r && md->suspended_bdev) {
bdput(md->suspended_bdev);
int dm_target_iterate(void (*iter_func)(struct target_type *tt,
void *param), void *param);
-/*-----------------------------------------------------------------
- * Useful inlines.
- *---------------------------------------------------------------*/
-static inline int array_too_big(unsigned long fixed, unsigned long obj,
- unsigned long num)
-{
- return (num > (ULONG_MAX - fixed) / obj);
-}
-
int dm_split_args(int *argc, char ***argvp, char *input);
/*
if( VFL_TYPE_GRABBER == type ) {
vv->video_minor = vfd->minor;
INFO(("%s: registered device video%d [v4l2]\n",
- dev->name, vfd->minor & 0x1f));
+ dev->name, vfd->num));
} else {
vv->vbi_minor = vfd->minor;
INFO(("%s: registered device vbi%d [v4l2]\n",
- dev->name, vfd->minor & 0x1f));
+ dev->name, vfd->num));
}
*vid = vfd;
* copying is done already, arg is a kernel pointer.
*/
-int saa7146_video_do_ioctl(struct inode *inode, struct file *file, unsigned int cmd, void *arg)
+static int __saa7146_video_do_ioctl(struct file *file, unsigned int cmd, void *arg)
{
struct saa7146_fh *fh = file->private_data;
struct saa7146_dev *dev = fh->dev;
}
#endif
default:
- return v4l_compat_translate_ioctl(inode,file,cmd,arg,
- saa7146_video_do_ioctl);
+ return v4l_compat_translate_ioctl(file, cmd, arg,
+ __saa7146_video_do_ioctl);
}
return 0;
}
+int saa7146_video_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ return __saa7146_video_do_ioctl(file, cmd, arg);
+}
+
/*********************************************************************************/
/* buffer handling functions */
struct dvb_frontend frontend;
fe_modulation_t current_modulation;
+ unsigned int first_tune:1;
u32 current_frequency;
int if_freq;
{ S5H1411_I2C_TOP_ADDR, 0x08, 0x0047, },
{ S5H1411_I2C_TOP_ADDR, 0x1c, 0x0400, },
{ S5H1411_I2C_TOP_ADDR, 0x1e, 0x0370, },
- { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342a, },
+ { S5H1411_I2C_TOP_ADDR, 0x1f, 0x342c, },
{ S5H1411_I2C_TOP_ADDR, 0x24, 0x0231, },
{ S5H1411_I2C_TOP_ADDR, 0x25, 0x1011, },
{ S5H1411_I2C_TOP_ADDR, 0x26, 0x0f07, },
{ S5H1411_I2C_TOP_ADDR, 0x78, 0x3141, },
{ S5H1411_I2C_TOP_ADDR, 0x7a, 0x3141, },
{ S5H1411_I2C_TOP_ADDR, 0xb3, 0x8003, },
- { S5H1411_I2C_TOP_ADDR, 0xb5, 0xafbb, },
{ S5H1411_I2C_TOP_ADDR, 0xb5, 0xa6bb, },
{ S5H1411_I2C_TOP_ADDR, 0xb6, 0x0609, },
{ S5H1411_I2C_TOP_ADDR, 0xb7, 0x2f06, },
switch (KHz) {
case 3250:
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d9);
+ s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x38, 0x10d5);
s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x39, 0x5342);
s5h1411_writereg(state, S5H1411_I2C_QAM_ADDR, 0x2c, 0x10d9);
break;
if (inversion == 1)
val |= 0x1000; /* Inverted */
- else
- val |= 0x0000;
state->inversion = inversion;
return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0x24, val);
}
+static int s5h1411_set_serialmode(struct dvb_frontend *fe, int serial)
+{
+ struct s5h1411_state *state = fe->demodulator_priv;
+ u16 val;
+
+ dprintk("%s(%d)\n", __func__, serial);
+ val = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xbd) & ~0x100;
+
+ if (serial == 1)
+ val |= 0x100;
+
+ return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, val);
+}
+
static int s5h1411_enable_modulation(struct dvb_frontend *fe,
fe_modulation_t m)
{
dprintk("%s(0x%08x)\n", __func__, m);
+ if ((state->first_tune == 0) && (m == state->current_modulation)) {
+ dprintk("%s() Already at desired modulation. Skipping...\n",
+ __func__);
+ return 0;
+ }
+
switch (m) {
case VSB_8:
dprintk("%s() VSB_8\n", __func__);
}
state->current_modulation = m;
+ state->first_tune = 0;
s5h1411_softreset(fe);
return 0;
return s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xe0, val);
}
-static int s5h1411_sleep(struct dvb_frontend *fe, int enable)
+static int s5h1411_set_powerstate(struct dvb_frontend *fe, int enable)
{
struct s5h1411_state *state = fe->demodulator_priv;
return 0;
}
+static int s5h1411_sleep(struct dvb_frontend *fe)
+{
+ return s5h1411_set_powerstate(fe, 1);
+}
+
static int s5h1411_register_reset(struct dvb_frontend *fe)
{
struct s5h1411_state *state = fe->demodulator_priv;
s5h1411_enable_modulation(fe, p->u.vsb.modulation);
- /* Allow the demod to settle */
- msleep(100);
-
if (fe->ops.tuner_ops.set_params) {
if (fe->ops.i2c_gate_ctrl)
fe->ops.i2c_gate_ctrl(fe, 1);
fe->ops.i2c_gate_ctrl(fe, 0);
}
+ /* Issue a reset to the demod so it knows to resync against the
+ newly tuned frequency */
+ s5h1411_softreset(fe);
+
return 0;
}
dprintk("%s()\n", __func__);
- s5h1411_sleep(fe, 0);
+ s5h1411_set_powerstate(fe, 0);
s5h1411_register_reset(fe);
for (i = 0; i < ARRAY_SIZE(init_tab); i++)
/* The datasheet says that after initialisation, VSB is default */
state->current_modulation = VSB_8;
+ /* Although the datasheet says it's in VSB, empirical evidence
+ shows problems getting lock on the first tuning request. Make
+ sure we call enable_modulation the first time around */
+ state->first_tune = 1;
+
if (state->config->output_mode == S5H1411_SERIAL_OUTPUT)
/* Serial */
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1101);
+ s5h1411_set_serialmode(fe, 1);
else
/* Parallel */
- s5h1411_writereg(state, S5H1411_I2C_TOP_ADDR, 0xbd, 0x1001);
+ s5h1411_set_serialmode(fe, 0);
s5h1411_set_spectralinversion(fe, state->config->inversion);
s5h1411_set_if_freq(fe, state->config->vsb_if);
*status = 0;
- /* Get the demodulator status */
- reg = (s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2) >> 15)
- & 0x0001;
- if (reg)
- *status |= FE_HAS_LOCK | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+ /* Register F2 bit 15 = Master Lock, removed */
switch (state->current_modulation) {
case QAM_64:
case QAM_256:
reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf0);
- if (reg & 0x100)
- *status |= FE_HAS_VITERBI;
- if (reg & 0x10)
- *status |= FE_HAS_SYNC;
+ if (reg & 0x10) /* QAM FEC Lock */
+ *status |= FE_HAS_SYNC | FE_HAS_LOCK;
+ if (reg & 0x100) /* QAM EQ Lock */
+ *status |= FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+
break;
case VSB_8:
- reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x5e);
- if (reg & 0x0001)
- *status |= FE_HAS_SYNC;
reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0xf2);
- if (reg & 0x1000)
- *status |= FE_HAS_VITERBI;
+ if (reg & 0x1000) /* FEC Lock */
+ *status |= FE_HAS_SYNC | FE_HAS_LOCK;
+ if (reg & 0x2000) /* EQ Lock */
+ *status |= FE_HAS_VITERBI | FE_HAS_CARRIER | FE_HAS_SIGNAL;
+
+ reg = s5h1411_readreg(state, S5H1411_I2C_TOP_ADDR, 0x53);
+ if (reg & 0x1) /* AFC Lock */
+ *status |= FE_HAS_SIGNAL;
+
break;
default:
return -EINVAL;
},
.init = s5h1411_init,
+ .sleep = s5h1411_sleep,
.i2c_gate_ctrl = s5h1411_i2c_gate_ctrl,
.set_frontend = s5h1411_set_frontend,
.get_frontend = s5h1411_get_frontend,
u16 mpeg_timing;
/* IF Freq for QAM and VSB in KHz */
-#define S5H1411_IF_2500 2500
+#define S5H1411_IF_3250 3250
#define S5H1411_IF_3500 3500
#define S5H1411_IF_4000 4000
#define S5H1411_IF_5380 5380
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0xC7, radio->transfer_buffer, 8, 300)<0 ||
+ 0x00, 0xC7, radio->transfer_buffer, 8, 300) < 0 ||
usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
DSB100_ONOFF,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x01, 0x00, radio->transfer_buffer, 8, 300)<0)
+ 0x01, 0x00, radio->transfer_buffer, 8, 300) < 0)
return -1;
radio->muted=0;
return (radio->transfer_buffer)[0];
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x16, 0x1C, radio->transfer_buffer, 8, 300)<0 ||
+ 0x16, 0x1C, radio->transfer_buffer, 8, 300) < 0 ||
usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
DSB100_ONOFF,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0x00, radio->transfer_buffer, 8, 300)<0)
+ 0x00, 0x00, radio->transfer_buffer, 8, 300) < 0)
return -1;
radio->muted=1;
return (radio->transfer_buffer)[0];
/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
static int dsbr100_setfreq(struct dsbr100_device *radio, int freq)
{
- freq = (freq/16*80)/1000+856;
+ freq = (freq / 16 * 80) / 1000 + 856;
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
DSB100_TUNE,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- (freq>>8)&0x00ff, freq&0xff,
- radio->transfer_buffer, 8, 300)<0 ||
+ (freq >> 8) & 0x00ff, freq & 0xff,
+ radio->transfer_buffer, 8, 300) < 0 ||
usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x96, 0xB7, radio->transfer_buffer, 8, 300)<0 ||
+ 0x96, 0xB7, radio->transfer_buffer, 8, 300) < 0 ||
usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0x24, radio->transfer_buffer, 8, 300)<0) {
+ 0x00, 0x24, radio->transfer_buffer, 8, 300) < 0) {
radio->stereo = -1;
return -1;
}
- radio->stereo = ! ((radio->transfer_buffer)[0]&0x01);
+ radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
return (radio->transfer_buffer)[0];
}
if (usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
USB_REQ_GET_STATUS,
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00 , 0x24, radio->transfer_buffer, 8, 300)<0)
+ 0x00 , 0x24, radio->transfer_buffer, 8, 300) < 0)
radio->stereo = -1;
else
- radio->stereo = ! (radio->transfer_buffer[0]&0x01);
+ radio->stereo = !(radio->transfer_buffer[0] & 0x01);
}
{
strlcpy(v->driver, "dsbr100", sizeof(v->driver));
strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
- sprintf(v->bus_info, "ISA");
+ sprintf(v->bus_info, "USB");
v->version = RADIO_VERSION;
v->capabilities = V4L2_CAP_TUNER;
return 0;
dsbr100_getstat(radio);
strcpy(v->name, "FM");
v->type = V4L2_TUNER_RADIO;
- v->rangelow = FREQ_MIN*FREQ_MUL;
- v->rangehigh = FREQ_MAX*FREQ_MUL;
- v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
+ v->rangelow = FREQ_MIN * FREQ_MUL;
+ v->rangehigh = FREQ_MAX * FREQ_MUL;
+ v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
v->capability = V4L2_TUNER_CAP_LOW;
if(radio->stereo)
v->audmode = V4L2_TUNER_MODE_STEREO;
struct dsbr100_device *radio = video_drvdata(file);
radio->curfreq = f->frequency;
- if (dsbr100_setfreq(radio, radio->curfreq)==-1)
+ if (dsbr100_setfreq(radio, radio->curfreq) == -1)
dev_warn(&radio->usbdev->dev, "Set frequency failed\n");
return 0;
}
for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
if (qc->id && qc->id == radio_qctrl[i].id) {
- memcpy(qc, &(radio_qctrl[i]),
- sizeof(*qc));
+ memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
return 0;
}
}
static int usb_dsbr100_open(struct inode *inode, struct file *file)
{
struct dsbr100_device *radio = video_drvdata(file);
+ int retval;
lock_kernel();
radio->users = 1;
radio->muted = 1;
- if (dsbr100_start(radio)<0) {
+ if (dsbr100_start(radio) < 0) {
dev_warn(&radio->usbdev->dev,
"Radio did not start up properly\n");
radio->users = 0;
unlock_kernel();
return -EIO;
}
- dsbr100_setfreq(radio, radio->curfreq);
+
+ retval = dsbr100_setfreq(radio, radio->curfreq);
+
+ if (retval == -1)
+ printk(KERN_WARNING KBUILD_MODNAME ": Set frequency failed\n");
+
unlock_kernel();
return 0;
}
{
struct dsbr100_device *radio;
- if (!(radio = kmalloc(sizeof(struct dsbr100_device), GFP_KERNEL)))
+ radio = kmalloc(sizeof(struct dsbr100_device), GFP_KERNEL);
+
+ if (!radio)
return -ENOMEM;
- if (!(radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL))) {
+
+ radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
+
+ if (!(radio->transfer_buffer)) {
kfree(radio);
return -ENOMEM;
}
- if (!(radio->videodev = video_device_alloc())) {
+ radio->videodev = video_device_alloc();
+
+ if (!(radio->videodev)) {
kfree(radio->transfer_buffer);
kfree(radio);
return -ENOMEM;
radio->removed = 0;
radio->users = 0;
radio->usbdev = interface_to_usbdev(intf);
- radio->curfreq = FREQ_MIN*FREQ_MUL;
+ radio->curfreq = FREQ_MIN * FREQ_MUL;
video_set_drvdata(radio->videodev, radio);
if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr) < 0) {
dev_warn(&intf->dev, "Could not register video device\n");
{
struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+ lock_kernel();
+
radio->users = 1;
radio->muted = 1;
if (amradio_start(radio) < 0) {
warn("Radio did not start up properly");
radio->users = 0;
+ unlock_kernel();
return -EIO;
}
if (amradio_setfreq(radio, radio->curfreq) < 0)
warn("Set frequency failed");
+
+ unlock_kernel();
return 0;
}
}
printk("video%d: Found M64278 VGA (IRQ %d, Freq %dMHz).\n",
- ar->vdev->minor, M32R_IRQ_INT3, freq);
+ ar->vdev->num, M32R_IRQ_INT3, freq);
return 0;
video_nr[btv->c.nr]) < 0)
goto err;
printk(KERN_INFO "bttv%d: registered device video%d\n",
- btv->c.nr,btv->video_dev->minor & 0x1f);
+ btv->c.nr, btv->video_dev->num);
if (device_create_file(&btv->video_dev->dev,
&dev_attr_card)<0) {
printk(KERN_ERR "bttv%d: device_create_file 'card' "
vbi_nr[btv->c.nr]) < 0)
goto err;
printk(KERN_INFO "bttv%d: registered device vbi%d\n",
- btv->c.nr,btv->vbi_dev->minor & 0x1f);
+ btv->c.nr, btv->vbi_dev->num);
if (!btv->has_radio)
return 0;
radio_nr[btv->c.nr]) < 0)
goto err;
printk(KERN_INFO "bttv%d: registered device radio%d\n",
- btv->c.nr,btv->radio_dev->minor & 0x1f);
+ btv->c.nr, btv->radio_dev->num);
/* all done */
return 0;
}
printk(KERN_INFO "video%d: Colour QuickCam found on %s\n",
- qcam->vdev.minor, qcam->pport->name);
+ qcam->vdev.num, qcam->pport->name);
qcams[num_cams++] = qcam;
if (!cafe_dfs_root)
return;
- sprintf(fname, "regs-%d", cam->v4ldev.minor);
+ sprintf(fname, "regs-%d", cam->v4ldev.num);
cam->dfs_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
cam, &cafe_dfs_reg_ops);
- sprintf(fname, "cam-%d", cam->v4ldev.minor);
+ sprintf(fname, "cam-%d", cam->v4ldev.num);
cam->dfs_cam_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
cam, &cafe_dfs_cam_ops);
}
if (!cpia_proc_root || !cam)
return;
- snprintf(name, sizeof(name), "video%d", cam->vdev.minor);
+ snprintf(name, sizeof(name), "video%d", cam->vdev.num);
ent = create_proc_entry(name, S_IFREG|S_IRUGO|S_IWUSR, cpia_proc_root);
if (!ent)
if (!cam || !cam->proc_entry)
return;
- snprintf(name, sizeof(name), "video%d", cam->vdev.minor);
+ snprintf(name, sizeof(name), "video%d", cam->vdev.num);
remove_proc_entry(name, cpia_proc_root);
cam->proc_entry = NULL;
}
}
#ifdef CONFIG_PROC_FS
- DBG("destroying /proc/cpia/video%d\n", cam->vdev.minor);
+ DBG("destroying /proc/cpia/video%d\n", cam->vdev.num);
destroy_proc_cpia_cam(cam);
#endif
if (!cam->open_count) {
} else {
LOG("/dev/video%d removed while open, "
"deferring video_unregister_device\n",
- cam->vdev->minor);
+ cam->vdev->num);
}
}
const struct pci_device_id *pci_id)
{
int retval = 0;
+ int i;
int vbi_buf_size;
u32 devtype;
struct cx18 *cx;
/* active i2c */
CX18_DEBUG_INFO("activating i2c...\n");
- if (init_cx18_i2c(cx)) {
+ retval = init_cx18_i2c(cx);
+ if (retval) {
CX18_ERR("Could not initialize i2c\n");
goto free_map;
}
CX18_ERR("Error %d on initialization\n", retval);
cx18_log_statistics(cx);
- kfree(cx18_cards[cx18_cards_active]);
- cx18_cards[cx18_cards_active] = NULL;
+ i = cx->num;
+ spin_lock(&cx18_cards_lock);
+ kfree(cx18_cards[i]);
+ cx18_cards[i] = NULL;
+ spin_unlock(&cx18_cards_lock);
return retval;
}
/* Statistics gathering */
static inline
-void cx18_log_write_retries(struct cx18 *cx, int i, const void *addr)
+void cx18_log_write_retries(struct cx18 *cx, int i, const void __iomem *addr)
{
if (i > CX18_MAX_MMIO_RETRIES)
i = CX18_MAX_MMIO_RETRIES;
}
static inline
-void cx18_log_read_retries(struct cx18 *cx, int i, const void *addr)
+void cx18_log_read_retries(struct cx18 *cx, int i, const void __iomem *addr)
{
if (i > CX18_MAX_MMIO_RETRIES)
i = CX18_MAX_MMIO_RETRIES;
/* Initialize v4l2 variables and register v4l2 devices */
int cx18_streams_setup(struct cx18 *cx)
{
- int type;
+ int type, ret;
/* Setup V4L2 Devices */
for (type = 0; type < CX18_MAX_STREAMS; type++) {
/* Prepare device */
- if (cx18_prep_dev(cx, type))
+ ret = cx18_prep_dev(cx, type);
+ if (ret < 0)
break;
/* Allocate Stream */
- if (cx18_stream_alloc(&cx->streams[type]))
+ ret = cx18_stream_alloc(&cx->streams[type]);
+ if (ret < 0)
break;
}
if (type == CX18_MAX_STREAMS)
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 0);
- return -ENOMEM;
+ return ret;
}
static int cx18_reg_dev(struct cx18 *cx, int type)
{
struct cx18_stream *s = &cx->streams[type];
int vfl_type = cx18_stream_info[type].vfl_type;
- int num;
+ int num, ret;
/* TODO: Shouldn't this be a VFL_TYPE_TRANSPORT or something?
* We need a VFL_TYPE_TS defined.
/* just return if no DVB is supported */
if ((cx->card->hw_all & CX18_HW_DVB) == 0)
return 0;
- if (cx18_dvb_register(s) < 0) {
+ ret = cx18_dvb_register(s);
+ if (ret < 0) {
CX18_ERR("DVB failed to register\n");
- return -EINVAL;
+ return ret;
}
}
}
/* Register device. First try the desired minor, then any free one. */
- if (video_register_device(s->v4l2dev, vfl_type, num)) {
+ ret = video_register_device(s->v4l2dev, vfl_type, num);
+ if (ret < 0) {
CX18_ERR("Couldn't register v4l2 device for %s kernel number %d\n",
s->name, num);
video_device_release(s->v4l2dev);
s->v4l2dev = NULL;
- return -ENOMEM;
+ return ret;
}
num = s->v4l2dev->num;
int cx18_streams_register(struct cx18 *cx)
{
int type;
- int err = 0;
+ int err;
+ int ret = 0;
/* Register V4L2 devices */
- for (type = 0; type < CX18_MAX_STREAMS; type++)
- err |= cx18_reg_dev(cx, type);
+ for (type = 0; type < CX18_MAX_STREAMS; type++) {
+ err = cx18_reg_dev(cx, type);
+ if (err && ret == 0)
+ ret = err;
+ }
- if (err == 0)
+ if (ret == 0)
return 0;
/* One or more streams could not be initialized. Clean 'em all up. */
cx18_streams_cleanup(cx, 1);
- return -ENOMEM;
+ return ret;
}
/* Unregister v4l2 devices */
cx23885_mc417_init(dev);
printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
- dev->name, dev->v4l_device->minor & 0x1f);
+ dev->name, dev->v4l_device->num);
return 0;
}
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
- dev->name, dev->video_dev->minor & 0x1f);
+ dev->name, dev->video_dev->num);
/* initial device configuration */
mutex_lock(&dev->lock);
cx23885_set_tvnorm(dev, dev->tvnorm);
return err;
}
printk(KERN_INFO "%s/2: registered device video%d [mpeg]\n",
- dev->core->name,dev->mpeg_dev->minor & 0x1f);
+ dev->core->name, dev->mpeg_dev->num);
return 0;
}
memcpy(&core->board, &cx88_boards[core->boardnr], sizeof(core->board));
- if (!core->board.num_frontends)
- core->board.num_frontends=1;
+ if (!core->board.num_frontends && (core->board.mpeg & CX88_MPEG_DVB))
+ core->board.num_frontends = 1;
info_printk(core, "subsystem: %04x:%04x, board: %s [card=%d,%s], frontend(s): %d\n",
pci->subsystem_vendor, pci->subsystem_device, core->board.name,
if (fe0->dvb.frontend)
fe0->dvb.frontend->ops.i2c_gate_ctrl = NULL;
if (attach_xc3028(0x61, dev) < 0)
- return -EINVAL;
+ goto frontend_detach;
break;
case CX88_BOARD_PCHDTV_HD3000:
fe0->dvb.frontend = dvb_attach(or51132_attach, &pchdtv_hd3000,
goto frontend_detach;
core->prev_set_voltage = fe0->dvb.frontend->ops.set_voltage;
fe0->dvb.frontend->ops.set_voltage = tevii_dvbs_set_voltage;
-
}
}
break;
&dev->pci->dev, adapter_nr, mfe_shared);
frontend_detach:
- if (fe0->dvb.frontend) {
- dvb_frontend_detach(fe0->dvb.frontend);
- fe0->dvb.frontend = NULL;
- }
+ videobuf_dvb_dealloc_frontends(&dev->frontends);
return -EINVAL;
}
static int cx8802_dvb_remove(struct cx8802_driver *drv)
{
+ struct cx88_core *core = drv->core;
struct cx8802_dev *dev = drv->core->dvbdev;
+ dprintk( 1, "%s\n", __func__);
+
videobuf_dvb_unregister_bus(&dev->frontends);
vp3054_i2c_remove(dev);
void cx88_call_i2c_clients(struct cx88_core *core, unsigned int cmd, void *arg)
{
+#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE)
struct videobuf_dvb_frontends *f = &core->dvbdev->frontends;
struct videobuf_dvb_frontend *fe = NULL;
+#endif
if (0 != core->i2c_rc)
return;
{
struct cx8802_dev *dev;
struct cx88_core *core;
+ int err;
+#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE)
struct videobuf_dvb_frontend *demod;
- int err,i;
+ int i;
+#endif
/* general setup */
core = cx88_core_get(pci_dev);
if (!core->board.mpeg)
goto fail_core;
- if (!core->board.num_frontends) {
- printk(KERN_ERR "%s() .num_frontends should be non-zero, err = %d\n", __func__, err);
- goto fail_core;
- }
-
err = -ENOMEM;
dev = kzalloc(sizeof(*dev),GFP_KERNEL);
if (NULL == dev)
INIT_LIST_HEAD(&dev->drvlist);
list_add_tail(&dev->devlist,&cx8802_devlist);
+#if defined(CONFIG_VIDEO_CX88_DVB) || defined(CONFIG_VIDEO_CX88_DVB_MODULE)
mutex_init(&dev->frontends.lock);
INIT_LIST_HEAD(&dev->frontends.felist);
- printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, core->board.num_frontends);
+ if (core->board.num_frontends)
+ printk(KERN_INFO "%s() allocating %d frontend(s)\n", __func__, core->board.num_frontends);
for (i = 1; i <= core->board.num_frontends; i++) {
demod = videobuf_dvb_alloc_frontend(&dev->frontends, i);
goto fail_free;
}
}
+#endif
/* Maintain a reference so cx88-video can query the 8802 device. */
core->dvbdev = dev;
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device video%d [v4l2]\n",
- core->name,dev->video_dev->minor & 0x1f);
+ core->name, dev->video_dev->num);
dev->vbi_dev = cx88_vdev_init(core,dev->pci,&cx8800_vbi_template,"vbi");
err = video_register_device(dev->vbi_dev,VFL_TYPE_VBI,
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device vbi%d\n",
- core->name,dev->vbi_dev->minor & 0x1f);
+ core->name, dev->vbi_dev->num);
if (core->board.radio.type == CX88_RADIO) {
dev->radio_dev = cx88_vdev_init(core,dev->pci,
goto fail_unreg;
}
printk(KERN_INFO "%s/0: registered device radio%d\n",
- core->name,dev->radio_dev->minor & 0x1f);
+ core->name, dev->radio_dev->num);
}
/* everything worked */
goto fail_unreg;
}
em28xx_info("Registered radio device as /dev/radio%d\n",
- dev->radio_dev->minor & 0x1f);
+ dev->radio_dev->num);
}
/* init video dma queues */
cam->state |= DEV_MISCONFIGURED;
DBG(1, "URB timeout reached. The camera is misconfigured. To "
"use it, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam = container_of(kref, struct et61x251_device, kref);
- DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
+ DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->num);
video_set_drvdata(cam->v4ldev, NULL);
video_unregister_device(cam->v4ldev);
usb_put_dev(cam->usbdev);
if (cam->users) {
DBG(2, "Device /dev/video%d is already in use",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
DBG(3, "Simultaneous opens are not supported");
if ((filp->f_flags & O_NONBLOCK) ||
(filp->f_flags & O_NDELAY)) {
cam->frame_count = 0;
et61x251_empty_framequeues(cam);
- DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d is open", cam->v4ldev->num);
out:
mutex_unlock(&cam->open_mutex);
cam->users--;
wake_up_interruptible_nr(&cam->wait_open, 1);
- DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d closed", cam->v4ldev->num);
kref_put(&cam->kref, et61x251_release_resources);
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware "
"problems. To use the camera, close and open "
- "/dev/video%d again.", cam->v4ldev->minor);
+ "/dev/video%d again.", cam->v4ldev->num);
return -EIO;
}
goto fail;
}
- DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
+ DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->num);
cam->module_param.force_munmap = force_munmap[dev_nr];
cam->module_param.frame_timeout = frame_timeout[dev_nr];
if (cam->users) {
DBG(2, "Device /dev/video%d is open! Deregistration and "
"memory deallocation are deferred.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
cam->state |= DEV_MISCONFIGURED;
et61x251_stop_transfer(cam);
cam->state |= DEV_DISCONNECTED;
if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT) {
ivtv_call_i2c_clients(itv, VIDIOC_INT_S_STD_OUTPUT, &itv->std);
+ /* Turn off the output signal. The mpeg decoder is not yet
+ active so without this you would get a green image until the
+ mpeg decoder becomes active. */
+ ivtv_saa7127(itv, VIDIOC_STREAMOFF, NULL);
}
/* clear interrupt mask, effectively disabling interrupts */
ivtv_s_frequency(NULL, &fh, &vf);
if (itv->card->v4l2_capabilities & V4L2_CAP_VIDEO_OUTPUT) {
+ /* Turn on the TV-out: ivtv_init_mpeg_decoder() initializes
+ the mpeg decoder so now the saa7127 receives a proper
+ signal. */
+ ivtv_saa7127(itv, VIDIOC_STREAMON, NULL);
ivtv_init_mpeg_decoder(itv);
}
ivtv_s_std(NULL, &fh, &itv->tuner_std);
/* Stop all decoding */
IVTV_DEBUG_INFO("Stopping decoding\n");
+
+ /* Turn off the TV-out */
+ if (itv->v4l2_cap & V4L2_CAP_VIDEO_OUTPUT)
+ ivtv_saa7127(itv, VIDIOC_STREAMOFF, NULL);
if (atomic_read(&itv->decoding) > 0) {
int type;
{
return ivtv_call_i2c_client(itv, IVTV_SAA7127_I2C_ADDR, cmd, arg);
}
+EXPORT_SYMBOL(ivtv_saa7127);
int ivtv_saa717x(struct ivtv *itv, unsigned int cmd, void *arg)
{
return 0;
}
-static int ivtv_serialized_ioctl(struct ivtv *itv, struct inode *inode, struct file *filp,
+static long ivtv_serialized_ioctl(struct ivtv *itv, struct file *filp,
unsigned int cmd, unsigned long arg)
{
struct video_device *vfd = video_devdata(filp);
struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
- int ret;
+ long ret;
/* Filter dvb ioctls that cannot be handled by the v4l ioctl framework */
switch (cmd) {
if (ivtv_debug & IVTV_DBGFLG_IOCTL)
vfd->debug = V4L2_DEBUG_IOCTL | V4L2_DEBUG_IOCTL_ARG;
- ret = video_ioctl2(inode, filp, cmd, arg);
+ ret = __video_ioctl2(filp, cmd, arg);
vfd->debug = 0;
return ret;
}
-int ivtv_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
+long ivtv_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct ivtv_open_id *id = (struct ivtv_open_id *)filp->private_data;
struct ivtv *itv = id->itv;
- int res;
+ long res;
mutex_lock(&itv->serialize_lock);
- res = ivtv_serialized_ioctl(itv, inode, filp, cmd, arg);
+ res = ivtv_serialized_ioctl(itv, filp, cmd, arg);
mutex_unlock(&itv->serialize_lock);
return res;
}
int ivtv_s_std(struct file *file, void *fh, v4l2_std_id *std);
int ivtv_s_frequency(struct file *file, void *fh, struct v4l2_frequency *vf);
int ivtv_s_input(struct file *file, void *fh, unsigned int inp);
-int ivtv_v4l2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg);
+long ivtv_v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
#endif
.read = ivtv_v4l2_read,
.write = ivtv_v4l2_write,
.open = ivtv_v4l2_open,
- .ioctl = ivtv_v4l2_ioctl,
+ .unlocked_ioctl = ivtv_v4l2_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.release = ivtv_v4l2_close,
.poll = ivtv_v4l2_enc_poll,
.read = ivtv_v4l2_read,
.write = ivtv_v4l2_write,
.open = ivtv_v4l2_open,
- .ioctl = ivtv_v4l2_ioctl,
+ .unlocked_ioctl = ivtv_v4l2_ioctl,
.compat_ioctl = v4l_compat_ioctl32,
.release = ivtv_v4l2_close,
.poll = ivtv_v4l2_dec_poll,
#endif
#include "ivtv-driver.h"
+#include "ivtv-i2c.h"
#include "ivtv-udma.h"
#include "ivtv-mailbox.h"
switch (blank_mode) {
case FB_BLANK_UNBLANK:
ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 1);
+ ivtv_saa7127(itv, VIDIOC_STREAMON, NULL);
break;
case FB_BLANK_NORMAL:
case FB_BLANK_HSYNC_SUSPEND:
case FB_BLANK_VSYNC_SUSPEND:
+ ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
+ ivtv_saa7127(itv, VIDIOC_STREAMON, NULL);
+ break;
case FB_BLANK_POWERDOWN:
+ ivtv_saa7127(itv, VIDIOC_STREAMOFF, NULL);
ivtv_vapi(itv, CX2341X_OSD_SET_STATE, 1, 0);
break;
}
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4, 0,3,0,0);
ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC,4,15,0,0,0);
+ /* prevent the PTSs from slowly drifting away in the generated
+ MPEG stream */
+ ret |= pvr2_encoder_vcmd(hdw, CX2341X_ENC_MISC, 2, 4, 1);
+
return ret;
}
static DEFINE_MUTEX(pvr2_unit_mtx);
static int ctlchg;
-static int initusbreset = 1;
static int procreload;
static int tuner[PVR_NUM] = { [0 ... PVR_NUM-1] = -1 };
static int tolerance[PVR_NUM] = { [0 ... PVR_NUM-1] = 0 };
MODULE_PARM_DESC(ctlchg, "0=optimize ctl change 1=always accept new ctl value");
module_param(init_pause_msec, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(init_pause_msec, "hardware initialization settling delay");
-module_param(initusbreset, int, S_IRUGO|S_IWUSR);
-MODULE_PARM_DESC(initusbreset, "Do USB reset device on probe");
module_param(procreload, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(procreload,
"Attempt init failure recovery with firmware reload");
}
hdw->fw1_state = FW1_STATE_OK;
- if (initusbreset) {
- pvr2_hdw_device_reset(hdw);
- }
if (!pvr2_hdw_dev_ok(hdw)) return;
for (idx = 0; idx < hdw->hdw_desc->client_modules.cnt; idx++) {
* This is part of Video 4 Linux API. The procedure handles ioctl() calls.
*
*/
-static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
+static int __pvr2_v4l2_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
{
struct pvr2_v4l2_fh *fh = file->private_data;
#endif
default :
- ret = v4l_compat_translate_ioctl(inode,file,cmd,
- arg,pvr2_v4l2_do_ioctl);
+ ret = v4l_compat_translate_ioctl(file, cmd,
+ arg, __pvr2_v4l2_do_ioctl);
}
pvr2_hdw_commit_ctl(hdw);
return ret;
}
+static int pvr2_v4l2_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ return __pvr2_v4l2_do_ioctl(file, cmd, arg);
+}
static void pvr2_v4l2_dev_destroy(struct pvr2_v4l2_dev *dip)
{
- int minor_id = dip->devbase.minor;
+ int num = dip->devbase.num;
struct pvr2_hdw *hdw = dip->v4lp->channel.mc_head->hdw;
enum pvr2_config cfg = dip->config;
int v4l_type = dip->v4l_type;
video_unregister_device(&dip->devbase);
printk(KERN_INFO "pvrusb2: unregistered device %s%u [%s]\n",
- get_v4l_name(v4l_type),minor_id & 0x1f,
+ get_v4l_name(v4l_type), num,
pvr2_config_get_name(cfg));
}
}
printk(KERN_INFO "pvrusb2: registered device %s%u [%s]\n",
- get_v4l_name(dip->v4l_type),dip->devbase.minor & 0x1f,
+ get_v4l_name(dip->v4l_type), dip->devbase.num,
pvr2_config_get_name(dip->config));
pvr2_hdw_v4l_store_minor_number(vp->channel.mc_head->hdw,
goto err;
}
else {
- PWC_INFO("Registered as /dev/video%d.\n", pdev->vdev->minor & 0x3F);
+ PWC_INFO("Registered as /dev/video%d.\n", pdev->vdev->num);
}
/* occupy slot */
goto fail4;
}
printk(KERN_INFO "%s: registered device video%d [v4l2]\n",
- dev->name,dev->video_dev->minor & 0x1f);
+ dev->name, dev->video_dev->num);
dev->vbi_dev = vdev_init(dev, &saa7134_video_template, "vbi");
if (err < 0)
goto fail4;
printk(KERN_INFO "%s: registered device vbi%d\n",
- dev->name,dev->vbi_dev->minor & 0x1f);
+ dev->name, dev->vbi_dev->num);
if (card_has_radio(dev)) {
dev->radio_dev = vdev_init(dev,&saa7134_radio_template,"radio");
if (err < 0)
goto fail4;
printk(KERN_INFO "%s: registered device radio%d\n",
- dev->name,dev->radio_dev->minor & 0x1f);
+ dev->name, dev->radio_dev->num);
}
/* everything worked */
return err;
}
printk(KERN_INFO "%s: registered device video%d [mpeg]\n",
- dev->name,dev->empress_dev->minor & 0x1f);
+ dev->name, dev->empress_dev->num);
videobuf_queue_sg_init(&dev->empress_tsq, &saa7134_ts_qops,
&dev->pci->dev, &dev->slock,
return -EIO;
}
dev_info(&intf->dev, "registered new video device: video%d\n",
- se401->vdev.minor);
+ se401->vdev.num);
usb_set_intfdata (intf, se401);
return 0;
cam->state |= DEV_MISCONFIGURED;
DBG(1, "URB timeout reached. The camera is misconfigured. "
"To use it, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam = container_of(kref, struct sn9c102_device, kref);
- DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
+ DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->num);
video_set_drvdata(cam->v4ldev, NULL);
video_unregister_device(cam->v4ldev);
usb_put_dev(cam->usbdev);
if (cam->users) {
DBG(2, "Device /dev/video%d is already in use",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
DBG(3, "Simultaneous opens are not supported");
/*
open() must follow the open flags and should block
cam->frame_count = 0;
sn9c102_empty_framequeues(cam);
- DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d is open", cam->v4ldev->num);
out:
mutex_unlock(&cam->open_mutex);
cam->users--;
wake_up_interruptible_nr(&cam->wait_open, 1);
- DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d closed", cam->v4ldev->num);
kref_put(&cam->kref, sn9c102_release_resources);
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware "
"problems. To use the camera, close and open "
- "/dev/video%d again.", cam->v4ldev->minor);
+ "/dev/video%d again.", cam->v4ldev->num);
return -EIO;
}
goto fail;
}
- DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
+ DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->num);
video_set_drvdata(cam->v4ldev, cam);
cam->module_param.force_munmap = force_munmap[dev_nr];
if (cam->users) {
DBG(2, "Device /dev/video%d is open! Deregistration and "
"memory deallocation are deferred.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
cam->state |= DEV_MISCONFIGURED;
sn9c102_stop_transfer(cam);
cam->state |= DEV_DISCONNECTED;
STK_ERROR("v4l registration failed\n");
else
STK_INFO("Syntek USB2.0 Camera is now controlling video device"
- " /dev/video%d\n", dev->vdev.minor);
+ " /dev/video%d\n", dev->vdev.num);
return err;
}
stk_remove_sysfs_files(&dev->vdev);
STK_INFO("Syntek USB2.0 Camera release resources "
- "video device /dev/video%d\n", dev->vdev.minor);
+ "video device /dev/video%d\n", dev->vdev.num);
video_unregister_device(&dev->vdev);
}
retval = -EIO;
goto error_vdev;
}
- PDEBUG (0, "STV(i): registered new video device: video%d", stv680->vdev->minor);
+ PDEBUG(0, "STV(i): registered new video device: video%d",
+ stv680->vdev->num);
usb_set_intfdata (intf, stv680);
retval = stv680_create_sysfs_files(stv680->vdev);
dev_info(&uvd->dev->dev, "%s on /dev/video%d: canvas=%s videosize=%s\n",
(uvd->handle != NULL) ? uvd->handle->drvName : "???",
- uvd->vdev.minor, tmp2, tmp1);
+ uvd->vdev.num, tmp2, tmp1);
usb_get_dev(uvd->dev);
return 0;
return -EIO;
}
- printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",cam->vdev.minor);
+ printk(KERN_INFO "ViCam webcam driver now controlling video device %d\n",
+ cam->vdev.num);
usb_set_intfdata (intf, cam);
sizeof(struct i2c_client));
sprintf(usbvision->i2c_adap.name + strlen(usbvision->i2c_adap.name),
- " #%d", usbvision->vdev->minor & 0x1f);
+ " #%d", usbvision->vdev->num);
PDEBUG(DBG_I2C,"Adaptername: %s", usbvision->i2c_adap.name);
usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
// vbi Device:
if (usbvision->vbi) {
PDEBUG(DBG_PROBE, "unregister /dev/vbi%d [v4l2]",
- usbvision->vbi->minor & 0x1f);
+ usbvision->vbi->num);
if (usbvision->vbi->minor != -1) {
video_unregister_device(usbvision->vbi);
} else {
// Radio Device:
if (usbvision->rdev) {
PDEBUG(DBG_PROBE, "unregister /dev/radio%d [v4l2]",
- usbvision->rdev->minor & 0x1f);
+ usbvision->rdev->num);
if (usbvision->rdev->minor != -1) {
video_unregister_device(usbvision->rdev);
} else {
// Video Device:
if (usbvision->vdev) {
PDEBUG(DBG_PROBE, "unregister /dev/video%d [v4l2]",
- usbvision->vdev->minor & 0x1f);
+ usbvision->vdev->num);
if (usbvision->vdev->minor != -1) {
video_unregister_device(usbvision->vdev);
} else {
goto err_exit;
}
printk(KERN_INFO "USBVision[%d]: registered USBVision Video device /dev/video%d [v4l2]\n",
- usbvision->nr,usbvision->vdev->minor & 0x1f);
+ usbvision->nr, usbvision->vdev->num);
// Radio Device:
if (usbvision_device_data[usbvision->DevModel].Radio) {
goto err_exit;
}
printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device /dev/radio%d [v4l2]\n",
- usbvision->nr, usbvision->rdev->minor & 0x1f);
+ usbvision->nr, usbvision->rdev->num);
}
// vbi Device:
if (usbvision_device_data[usbvision->DevModel].vbi) {
goto err_exit;
}
printk(KERN_INFO "USBVision[%d]: registered USBVision VBI device /dev/vbi%d [v4l2] (Not Working Yet!)\n",
- usbvision->nr,usbvision->vbi->minor & 0x1f);
+ usbvision->nr, usbvision->vbi->num);
}
// all done
return 0;
return 0;
}
-static int uvc_v4l2_do_ioctl(struct inode *inode, struct file *file,
+static int __uvc_v4l2_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *vdev = video_devdata(file);
return uvc_xu_ctrl_query(video, arg, 1);
default:
- if ((ret = v4l_compat_translate_ioctl(inode, file, cmd, arg,
- uvc_v4l2_do_ioctl)) == -ENOIOCTLCMD)
+ if ((ret = v4l_compat_translate_ioctl(file, cmd, arg,
+ __uvc_v4l2_do_ioctl)) == -ENOIOCTLCMD)
uvc_trace(UVC_TRACE_IOCTL, "Unknown ioctl 0x%08x\n",
cmd);
return ret;
return ret;
}
+static int uvc_v4l2_do_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ return __uvc_v4l2_do_ioctl(file, cmd, arg);
+}
+
static int uvc_v4l2_ioctl(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
*/
static int
-get_v4l_control(struct inode *inode,
- struct file *file,
+get_v4l_control(struct file *file,
int cid,
v4l2_kioctl drv)
{
int err;
qctrl2.id = cid;
- err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
+ err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
if (err < 0)
dprintk("VIDIOC_QUERYCTRL: %d\n", err);
if (err == 0 && !(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED)) {
ctrl2.id = qctrl2.id;
- err = drv(inode, file, VIDIOC_G_CTRL, &ctrl2);
+ err = drv(file, VIDIOC_G_CTRL, &ctrl2);
if (err < 0) {
dprintk("VIDIOC_G_CTRL: %d\n", err);
return 0;
}
static int
-set_v4l_control(struct inode *inode,
- struct file *file,
+set_v4l_control(struct file *file,
int cid,
int value,
v4l2_kioctl drv)
int err;
qctrl2.id = cid;
- err = drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2);
+ err = drv(file, VIDIOC_QUERYCTRL, &qctrl2);
if (err < 0)
dprintk("VIDIOC_QUERYCTRL: %d\n", err);
if (err == 0 &&
+ 32767)
/ 65535;
ctrl2.value += qctrl2.minimum;
- err = drv(inode, file, VIDIOC_S_CTRL, &ctrl2);
+ err = drv(file, VIDIOC_S_CTRL, &ctrl2);
if (err < 0)
dprintk("VIDIOC_S_CTRL: %d\n", err);
}
}
static int count_inputs(
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
for (i = 0;; i++) {
memset(&input2, 0, sizeof(input2));
input2.index = i;
- if (0 != drv(inode, file, VIDIOC_ENUMINPUT, &input2))
+ if (0 != drv(file, VIDIOC_ENUMINPUT, &input2))
break;
}
return i;
}
static int check_size(
- struct inode *inode,
struct file *file,
v4l2_kioctl drv,
int *maxw,
memset(&fmt2, 0, sizeof(fmt2));
desc2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if (0 != drv(inode, file, VIDIOC_ENUM_FMT, &desc2))
+ if (0 != drv(file, VIDIOC_ENUM_FMT, &desc2))
goto done;
fmt2.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt2.fmt.pix.width = 10000;
fmt2.fmt.pix.height = 10000;
fmt2.fmt.pix.pixelformat = desc2.pixelformat;
- if (0 != drv(inode, file, VIDIOC_TRY_FMT, &fmt2))
+ if (0 != drv(file, VIDIOC_TRY_FMT, &fmt2))
goto done;
*maxw = fmt2.fmt.pix.width;
static noinline int v4l1_compat_get_capabilities(
struct video_capability *cap,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(cap, 0, sizeof(*cap));
memset(&fbuf, 0, sizeof(fbuf));
- err = drv(inode, file, VIDIOC_QUERYCAP, cap2);
+ err = drv(file, VIDIOC_QUERYCAP, cap2);
if (err < 0) {
dprintk("VIDIOCGCAP / VIDIOC_QUERYCAP: %d\n", err);
goto done;
}
if (cap2->capabilities & V4L2_CAP_VIDEO_OVERLAY) {
- err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
+ err = drv(file, VIDIOC_G_FBUF, &fbuf);
if (err < 0) {
dprintk("VIDIOCGCAP / VIDIOC_G_FBUF: %d\n", err);
memset(&fbuf, 0, sizeof(fbuf));
if (fbuf.capability & V4L2_FBUF_CAP_LIST_CLIPPING)
cap->type |= VID_TYPE_CLIPPING;
- cap->channels = count_inputs(inode, file, drv);
- check_size(inode, file, drv,
+ cap->channels = count_inputs(file, drv);
+ check_size(file, drv,
&cap->maxwidth, &cap->maxheight);
cap->audios = 0; /* FIXME */
cap->minwidth = 48; /* FIXME */
static noinline int v4l1_compat_get_frame_buffer(
struct video_buffer *buffer,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(buffer, 0, sizeof(*buffer));
memset(&fbuf, 0, sizeof(fbuf));
- err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
+ err = drv(file, VIDIOC_G_FBUF, &fbuf);
if (err < 0) {
dprintk("VIDIOCGFBUF / VIDIOC_G_FBUF: %d\n", err);
goto done;
static noinline int v4l1_compat_set_frame_buffer(
struct video_buffer *buffer,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
break;
}
fbuf.fmt.bytesperline = buffer->bytesperline;
- err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
+ err = drv(file, VIDIOC_S_FBUF, &fbuf);
if (err < 0)
dprintk("VIDIOCSFBUF / VIDIOC_S_FBUF: %d\n", err);
return err;
static noinline int v4l1_compat_get_win_cap_dimensions(
struct video_window *win,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(win, 0, sizeof(*win));
fmt->type = V4L2_BUF_TYPE_VIDEO_OVERLAY;
- err = drv(inode, file, VIDIOC_G_FMT, fmt);
+ err = drv(file, VIDIOC_G_FMT, fmt);
if (err < 0)
dprintk("VIDIOCGWIN / VIDIOC_G_WIN: %d\n", err);
if (err == 0) {
}
fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_G_FMT, fmt);
+ err = drv(file, VIDIOC_G_FMT, fmt);
if (err < 0) {
dprintk("VIDIOCGWIN / VIDIOC_G_FMT: %d\n", err);
goto done;
static noinline int v4l1_compat_set_win_cap_dimensions(
struct video_window *win,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
return err;
}
fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- drv(inode, file, VIDIOC_STREAMOFF, &fmt->type);
- err1 = drv(inode, file, VIDIOC_G_FMT, fmt);
+ drv(file, VIDIOC_STREAMOFF, &fmt->type);
+ err1 = drv(file, VIDIOC_G_FMT, fmt);
if (err1 < 0)
dprintk("VIDIOCSWIN / VIDIOC_G_FMT: %d\n", err1);
if (err1 == 0) {
fmt->fmt.pix.height = win->height;
fmt->fmt.pix.field = V4L2_FIELD_ANY;
fmt->fmt.pix.bytesperline = 0;
- err = drv(inode, file, VIDIOC_S_FMT, fmt);
+ err = drv(file, VIDIOC_S_FMT, fmt);
if (err < 0)
dprintk("VIDIOCSWIN / VIDIOC_S_FMT #1: %d\n",
err);
fmt->fmt.win.chromakey = win->chromakey;
fmt->fmt.win.clips = (void __user *)win->clips;
fmt->fmt.win.clipcount = win->clipcount;
- err2 = drv(inode, file, VIDIOC_S_FMT, fmt);
+ err2 = drv(file, VIDIOC_S_FMT, fmt);
if (err2 < 0)
dprintk("VIDIOCSWIN / VIDIOC_S_FMT #2: %d\n", err2);
static noinline int v4l1_compat_turn_preview_on_off(
int *on,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
/* dirty hack time. But v4l1 has no STREAMOFF
* equivalent in the API, and this one at
* least comes close ... */
- drv(inode, file, VIDIOC_STREAMOFF, &captype);
+ drv(file, VIDIOC_STREAMOFF, &captype);
}
- err = drv(inode, file, VIDIOC_OVERLAY, on);
+ err = drv(file, VIDIOC_OVERLAY, on);
if (err < 0)
dprintk("VIDIOCCAPTURE / VIDIOC_PREVIEW: %d\n", err);
return err;
static noinline int v4l1_compat_get_input_info(
struct video_channel *chan,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(&input2, 0, sizeof(input2));
input2.index = chan->channel;
- err = drv(inode, file, VIDIOC_ENUMINPUT, &input2);
+ err = drv(file, VIDIOC_ENUMINPUT, &input2);
if (err < 0) {
dprintk("VIDIOCGCHAN / VIDIOC_ENUMINPUT: "
"channel=%d err=%d\n", chan->channel, err);
break;
}
chan->norm = 0;
- err = drv(inode, file, VIDIOC_G_STD, &sid);
+ err = drv(file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGCHAN / VIDIOC_G_STD: %d\n", err);
if (err == 0) {
static noinline int v4l1_compat_set_input(
struct video_channel *chan,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
int err;
v4l2_std_id sid = 0;
- err = drv(inode, file, VIDIOC_S_INPUT, &chan->channel);
+ err = drv(file, VIDIOC_S_INPUT, &chan->channel);
if (err < 0)
dprintk("VIDIOCSCHAN / VIDIOC_S_INPUT: %d\n", err);
switch (chan->norm) {
break;
}
if (0 != sid) {
- err = drv(inode, file, VIDIOC_S_STD, &sid);
+ err = drv(file, VIDIOC_S_STD, &sid);
if (err < 0)
dprintk("VIDIOCSCHAN / VIDIOC_S_STD: %d\n", err);
}
static noinline int v4l1_compat_get_picture(
struct video_picture *pict,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
return err;
}
- pict->brightness = get_v4l_control(inode, file,
+ pict->brightness = get_v4l_control(file,
V4L2_CID_BRIGHTNESS, drv);
- pict->hue = get_v4l_control(inode, file,
+ pict->hue = get_v4l_control(file,
V4L2_CID_HUE, drv);
- pict->contrast = get_v4l_control(inode, file,
+ pict->contrast = get_v4l_control(file,
V4L2_CID_CONTRAST, drv);
- pict->colour = get_v4l_control(inode, file,
+ pict->colour = get_v4l_control(file,
V4L2_CID_SATURATION, drv);
- pict->whiteness = get_v4l_control(inode, file,
+ pict->whiteness = get_v4l_control(file,
V4L2_CID_WHITENESS, drv);
fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_G_FMT, fmt);
+ err = drv(file, VIDIOC_G_FMT, fmt);
if (err < 0) {
dprintk("VIDIOCGPICT / VIDIOC_G_FMT: %d\n", err);
goto done;
static noinline int v4l1_compat_set_picture(
struct video_picture *pict,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
}
memset(&fbuf, 0, sizeof(fbuf));
- set_v4l_control(inode, file,
+ set_v4l_control(file,
V4L2_CID_BRIGHTNESS, pict->brightness, drv);
- set_v4l_control(inode, file,
+ set_v4l_control(file,
V4L2_CID_HUE, pict->hue, drv);
- set_v4l_control(inode, file,
+ set_v4l_control(file,
V4L2_CID_CONTRAST, pict->contrast, drv);
- set_v4l_control(inode, file,
+ set_v4l_control(file,
V4L2_CID_SATURATION, pict->colour, drv);
- set_v4l_control(inode, file,
+ set_v4l_control(file,
V4L2_CID_WHITENESS, pict->whiteness, drv);
/*
* V4L1 uses this ioctl to set both memory capture and overlay
*/
fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_G_FMT, fmt);
+ err = drv(file, VIDIOC_G_FMT, fmt);
/* If VIDIOC_G_FMT failed, then the driver likely doesn't
support memory capture. Trying to set the memory capture
parameters would be pointless. */
palette_to_pixelformat(pict->palette)) {
fmt->fmt.pix.pixelformat = palette_to_pixelformat(
pict->palette);
- mem_err = drv(inode, file, VIDIOC_S_FMT, fmt);
+ mem_err = drv(file, VIDIOC_S_FMT, fmt);
if (mem_err < 0)
dprintk("VIDIOCSPICT / VIDIOC_S_FMT: %d\n",
mem_err);
}
- err = drv(inode, file, VIDIOC_G_FBUF, &fbuf);
+ err = drv(file, VIDIOC_G_FBUF, &fbuf);
/* If VIDIOC_G_FBUF failed, then the driver likely doesn't
support overlay. Trying to set the overlay parameters
would be quite pointless. */
palette_to_pixelformat(pict->palette)) {
fbuf.fmt.pixelformat = palette_to_pixelformat(
pict->palette);
- ovl_err = drv(inode, file, VIDIOC_S_FBUF, &fbuf);
+ ovl_err = drv(file, VIDIOC_S_FBUF, &fbuf);
if (ovl_err < 0)
dprintk("VIDIOCSPICT / VIDIOC_S_FBUF: %d\n",
ovl_err);
static noinline int v4l1_compat_get_tuner(
struct video_tuner *tun,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
v4l2_std_id sid;
memset(&tun2, 0, sizeof(tun2));
- err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
+ err = drv(file, VIDIOC_G_TUNER, &tun2);
if (err < 0) {
dprintk("VIDIOCGTUNER / VIDIOC_G_TUNER: %d\n", err);
goto done;
for (i = 0; i < 64; i++) {
memset(&std2, 0, sizeof(std2));
std2.index = i;
- if (0 != drv(inode, file, VIDIOC_ENUMSTD, &std2))
+ if (0 != drv(file, VIDIOC_ENUMSTD, &std2))
break;
if (std2.id & V4L2_STD_PAL)
tun->flags |= VIDEO_TUNER_PAL;
tun->flags |= VIDEO_TUNER_SECAM;
}
- err = drv(inode, file, VIDIOC_G_STD, &sid);
+ err = drv(file, VIDIOC_G_STD, &sid);
if (err < 0)
dprintk("VIDIOCGTUNER / VIDIOC_G_STD: %d\n", err);
if (err == 0) {
static noinline int v4l1_compat_select_tuner(
struct video_tuner *tun,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
t.index = tun->tuner;
- err = drv(inode, file, VIDIOC_S_INPUT, &t);
+ err = drv(file, VIDIOC_S_INPUT, &t);
if (err < 0)
dprintk("VIDIOCSTUNER / VIDIOC_S_INPUT: %d\n", err);
return err;
static noinline int v4l1_compat_get_frequency(
unsigned long *freq,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(&freq2, 0, sizeof(freq2));
freq2.tuner = 0;
- err = drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
+ err = drv(file, VIDIOC_G_FREQUENCY, &freq2);
if (err < 0)
dprintk("VIDIOCGFREQ / VIDIOC_G_FREQUENCY: %d\n", err);
if (0 == err)
static noinline int v4l1_compat_set_frequency(
unsigned long *freq,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
struct v4l2_frequency freq2;
memset(&freq2, 0, sizeof(freq2));
- drv(inode, file, VIDIOC_G_FREQUENCY, &freq2);
+ drv(file, VIDIOC_G_FREQUENCY, &freq2);
freq2.frequency = *freq;
- err = drv(inode, file, VIDIOC_S_FREQUENCY, &freq2);
+ err = drv(file, VIDIOC_S_FREQUENCY, &freq2);
if (err < 0)
dprintk("VIDIOCSFREQ / VIDIOC_S_FREQUENCY: %d\n", err);
return err;
static noinline int v4l1_compat_get_audio(
struct video_audio *aud,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
struct v4l2_tuner tun2;
memset(&aud2, 0, sizeof(aud2));
- err = drv(inode, file, VIDIOC_G_AUDIO, &aud2);
+ err = drv(file, VIDIOC_G_AUDIO, &aud2);
if (err < 0) {
dprintk("VIDIOCGAUDIO / VIDIOC_G_AUDIO: %d\n", err);
goto done;
aud->name[sizeof(aud->name) - 1] = 0;
aud->audio = aud2.index;
aud->flags = 0;
- i = get_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME, drv);
+ i = get_v4l_control(file, V4L2_CID_AUDIO_VOLUME, drv);
if (i >= 0) {
aud->volume = i;
aud->flags |= VIDEO_AUDIO_VOLUME;
}
- i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BASS, drv);
+ i = get_v4l_control(file, V4L2_CID_AUDIO_BASS, drv);
if (i >= 0) {
aud->bass = i;
aud->flags |= VIDEO_AUDIO_BASS;
}
- i = get_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE, drv);
+ i = get_v4l_control(file, V4L2_CID_AUDIO_TREBLE, drv);
if (i >= 0) {
aud->treble = i;
aud->flags |= VIDEO_AUDIO_TREBLE;
}
- i = get_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE, drv);
+ i = get_v4l_control(file, V4L2_CID_AUDIO_BALANCE, drv);
if (i >= 0) {
aud->balance = i;
aud->flags |= VIDEO_AUDIO_BALANCE;
}
- i = get_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE, drv);
+ i = get_v4l_control(file, V4L2_CID_AUDIO_MUTE, drv);
if (i >= 0) {
if (i)
aud->flags |= VIDEO_AUDIO_MUTE;
}
aud->step = 1;
qctrl2.id = V4L2_CID_AUDIO_VOLUME;
- if (drv(inode, file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
+ if (drv(file, VIDIOC_QUERYCTRL, &qctrl2) == 0 &&
!(qctrl2.flags & V4L2_CTRL_FLAG_DISABLED))
aud->step = qctrl2.step;
aud->mode = 0;
memset(&tun2, 0, sizeof(tun2));
- err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
+ err = drv(file, VIDIOC_G_TUNER, &tun2);
if (err < 0) {
dprintk("VIDIOCGAUDIO / VIDIOC_G_TUNER: %d\n", err);
err = 0;
static noinline int v4l1_compat_set_audio(
struct video_audio *aud,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(&tun2, 0, sizeof(tun2));
aud2.index = aud->audio;
- err = drv(inode, file, VIDIOC_S_AUDIO, &aud2);
+ err = drv(file, VIDIOC_S_AUDIO, &aud2);
if (err < 0) {
dprintk("VIDIOCSAUDIO / VIDIOC_S_AUDIO: %d\n", err);
goto done;
}
- set_v4l_control(inode, file, V4L2_CID_AUDIO_VOLUME,
+ set_v4l_control(file, V4L2_CID_AUDIO_VOLUME,
aud->volume, drv);
- set_v4l_control(inode, file, V4L2_CID_AUDIO_BASS,
+ set_v4l_control(file, V4L2_CID_AUDIO_BASS,
aud->bass, drv);
- set_v4l_control(inode, file, V4L2_CID_AUDIO_TREBLE,
+ set_v4l_control(file, V4L2_CID_AUDIO_TREBLE,
aud->treble, drv);
- set_v4l_control(inode, file, V4L2_CID_AUDIO_BALANCE,
+ set_v4l_control(file, V4L2_CID_AUDIO_BALANCE,
aud->balance, drv);
- set_v4l_control(inode, file, V4L2_CID_AUDIO_MUTE,
+ set_v4l_control(file, V4L2_CID_AUDIO_MUTE,
!!(aud->flags & VIDEO_AUDIO_MUTE), drv);
- err = drv(inode, file, VIDIOC_G_TUNER, &tun2);
+ err = drv(file, VIDIOC_G_TUNER, &tun2);
if (err < 0)
dprintk("VIDIOCSAUDIO / VIDIOC_G_TUNER: %d\n", err);
if (err == 0) {
tun2.audmode = V4L2_TUNER_MODE_LANG2;
break;
}
- err = drv(inode, file, VIDIOC_S_TUNER, &tun2);
+ err = drv(file, VIDIOC_S_TUNER, &tun2);
if (err < 0)
dprintk("VIDIOCSAUDIO / VIDIOC_S_TUNER: %d\n", err);
}
static noinline int v4l1_compat_capture_frame(
struct video_mmap *mm,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(&buf, 0, sizeof(buf));
fmt->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_G_FMT, fmt);
+ err = drv(file, VIDIOC_G_FMT, fmt);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_G_FMT: %d\n", err);
goto done;
palette_to_pixelformat(mm->format);
fmt->fmt.pix.field = V4L2_FIELD_ANY;
fmt->fmt.pix.bytesperline = 0;
- err = drv(inode, file, VIDIOC_S_FMT, fmt);
+ err = drv(file, VIDIOC_S_FMT, fmt);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_S_FMT: %d\n", err);
goto done;
}
buf.index = mm->frame;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
+ err = drv(file, VIDIOC_QUERYBUF, &buf);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_QUERYBUF: %d\n", err);
goto done;
}
- err = drv(inode, file, VIDIOC_QBUF, &buf);
+ err = drv(file, VIDIOC_QBUF, &buf);
if (err < 0) {
dprintk("VIDIOCMCAPTURE / VIDIOC_QBUF: %d\n", err);
goto done;
}
- err = drv(inode, file, VIDIOC_STREAMON, &captype);
+ err = drv(file, VIDIOC_STREAMON, &captype);
if (err < 0)
dprintk("VIDIOCMCAPTURE / VIDIOC_STREAMON: %d\n", err);
done:
static noinline int v4l1_compat_sync(
int *i,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
memset(&buf, 0, sizeof(buf));
buf.index = *i;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
+ err = drv(file, VIDIOC_QUERYBUF, &buf);
if (err < 0) {
/* No such buffer */
dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
}
/* make sure capture actually runs so we don't block forever */
- err = drv(inode, file, VIDIOC_STREAMON, &captype);
+ err = drv(file, VIDIOC_STREAMON, &captype);
if (err < 0) {
dprintk("VIDIOCSYNC / VIDIOC_STREAMON: %d\n", err);
goto done;
if (err < 0 || /* error or sleep was interrupted */
err == 0) /* timeout? Shouldn't occur. */
break;
- err = drv(inode, file, VIDIOC_QUERYBUF, &buf);
+ err = drv(file, VIDIOC_QUERYBUF, &buf);
if (err < 0)
dprintk("VIDIOCSYNC / VIDIOC_QUERYBUF: %d\n", err);
}
if (!(buf.flags & V4L2_BUF_FLAG_DONE)) /* not done */
goto done;
do {
- err = drv(inode, file, VIDIOC_DQBUF, &buf);
+ err = drv(file, VIDIOC_DQBUF, &buf);
if (err < 0)
dprintk("VIDIOCSYNC / VIDIOC_DQBUF: %d\n", err);
} while (err == 0 && buf.index != *i);
static noinline int v4l1_compat_get_vbi_format(
struct vbi_format *fmt,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
}
fmt2->type = V4L2_BUF_TYPE_VBI_CAPTURE;
- err = drv(inode, file, VIDIOC_G_FMT, fmt2);
+ err = drv(file, VIDIOC_G_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCGVBIFMT / VIDIOC_G_FMT: %d\n", err);
goto done;
static noinline int v4l1_compat_set_vbi_format(
struct vbi_format *fmt,
- struct inode *inode,
struct file *file,
v4l2_kioctl drv)
{
fmt2->fmt.vbi.start[1] = fmt->start[1];
fmt2->fmt.vbi.count[1] = fmt->count[1];
fmt2->fmt.vbi.flags = fmt->flags;
- err = drv(inode, file, VIDIOC_TRY_FMT, fmt2);
+ err = drv(file, VIDIOC_TRY_FMT, fmt2);
if (err < 0) {
dprintk("VIDIOCSVBIFMT / VIDIOC_TRY_FMT: %d\n", err);
goto done;
err = -EINVAL;
goto done;
}
- err = drv(inode, file, VIDIOC_S_FMT, fmt2);
+ err = drv(file, VIDIOC_S_FMT, fmt2);
if (err < 0)
dprintk("VIDIOCSVBIFMT / VIDIOC_S_FMT: %d\n", err);
done:
* This function is exported.
*/
int
-v4l_compat_translate_ioctl(struct inode *inode,
- struct file *file,
+v4l_compat_translate_ioctl(struct file *file,
int cmd,
void *arg,
v4l2_kioctl drv)
switch (cmd) {
case VIDIOCGCAP: /* capability */
- err = v4l1_compat_get_capabilities(arg, inode, file, drv);
+ err = v4l1_compat_get_capabilities(arg, file, drv);
break;
case VIDIOCGFBUF: /* get frame buffer */
- err = v4l1_compat_get_frame_buffer(arg, inode, file, drv);
+ err = v4l1_compat_get_frame_buffer(arg, file, drv);
break;
case VIDIOCSFBUF: /* set frame buffer */
- err = v4l1_compat_set_frame_buffer(arg, inode, file, drv);
+ err = v4l1_compat_set_frame_buffer(arg, file, drv);
break;
case VIDIOCGWIN: /* get window or capture dimensions */
- err = v4l1_compat_get_win_cap_dimensions(arg, inode, file, drv);
+ err = v4l1_compat_get_win_cap_dimensions(arg, file, drv);
break;
case VIDIOCSWIN: /* set window and/or capture dimensions */
- err = v4l1_compat_set_win_cap_dimensions(arg, inode, file, drv);
+ err = v4l1_compat_set_win_cap_dimensions(arg, file, drv);
break;
case VIDIOCCAPTURE: /* turn on/off preview */
- err = v4l1_compat_turn_preview_on_off(arg, inode, file, drv);
+ err = v4l1_compat_turn_preview_on_off(arg, file, drv);
break;
case VIDIOCGCHAN: /* get input information */
- err = v4l1_compat_get_input_info(arg, inode, file, drv);
+ err = v4l1_compat_get_input_info(arg, file, drv);
break;
case VIDIOCSCHAN: /* set input */
- err = v4l1_compat_set_input(arg, inode, file, drv);
+ err = v4l1_compat_set_input(arg, file, drv);
break;
case VIDIOCGPICT: /* get tone controls & partial capture format */
- err = v4l1_compat_get_picture(arg, inode, file, drv);
+ err = v4l1_compat_get_picture(arg, file, drv);
break;
case VIDIOCSPICT: /* set tone controls & partial capture format */
- err = v4l1_compat_set_picture(arg, inode, file, drv);
+ err = v4l1_compat_set_picture(arg, file, drv);
break;
case VIDIOCGTUNER: /* get tuner information */
- err = v4l1_compat_get_tuner(arg, inode, file, drv);
+ err = v4l1_compat_get_tuner(arg, file, drv);
break;
case VIDIOCSTUNER: /* select a tuner input */
- err = v4l1_compat_select_tuner(arg, inode, file, drv);
+ err = v4l1_compat_select_tuner(arg, file, drv);
break;
case VIDIOCGFREQ: /* get frequency */
- err = v4l1_compat_get_frequency(arg, inode, file, drv);
+ err = v4l1_compat_get_frequency(arg, file, drv);
break;
case VIDIOCSFREQ: /* set frequency */
- err = v4l1_compat_set_frequency(arg, inode, file, drv);
+ err = v4l1_compat_set_frequency(arg, file, drv);
break;
case VIDIOCGAUDIO: /* get audio properties/controls */
- err = v4l1_compat_get_audio(arg, inode, file, drv);
+ err = v4l1_compat_get_audio(arg, file, drv);
break;
case VIDIOCSAUDIO: /* set audio controls */
- err = v4l1_compat_set_audio(arg, inode, file, drv);
+ err = v4l1_compat_set_audio(arg, file, drv);
break;
case VIDIOCMCAPTURE: /* capture a frame */
- err = v4l1_compat_capture_frame(arg, inode, file, drv);
+ err = v4l1_compat_capture_frame(arg, file, drv);
break;
case VIDIOCSYNC: /* wait for a frame */
- err = v4l1_compat_sync(arg, inode, file, drv);
+ err = v4l1_compat_sync(arg, file, drv);
break;
case VIDIOCGVBIFMT: /* query VBI data capture format */
- err = v4l1_compat_get_vbi_format(arg, inode, file, drv);
+ err = v4l1_compat_get_vbi_format(arg, file, drv);
break;
case VIDIOCSVBIFMT:
- err = v4l1_compat_set_vbi_format(arg, inode, file, drv);
+ err = v4l1_compat_set_vbi_format(arg, file, drv);
break;
default:
err = -ENOIOCTLCMD;
static DEFINE_MUTEX(mutex);
static LIST_HEAD(int_list);
-static void v4l2_int_device_try_attach_all(void)
+void v4l2_int_device_try_attach_all(void)
{
struct v4l2_int_device *m, *s;
}
}
}
+EXPORT_SYMBOL_GPL(v4l2_int_device_try_attach_all);
static int ioctl_sort_cmp(const void *a, const void *b)
{
find_ioctl(d->u.slave, cmd,
(v4l2_int_ioctl_func *)no_such_ioctl_0))(d);
}
+EXPORT_SYMBOL_GPL(v4l2_int_ioctl_0);
static int no_such_ioctl_1(struct v4l2_int_device *d, void *arg)
{
find_ioctl(d->u.slave, cmd,
(v4l2_int_ioctl_func *)no_such_ioctl_1))(d, arg);
}
+EXPORT_SYMBOL_GPL(v4l2_int_ioctl_1);
MODULE_LICENSE("GPL");
return -EINVAL;
}
-static int __video_do_ioctl(struct inode *inode, struct file *file,
+static int __video_do_ioctl(struct file *file,
unsigned int cmd, void *arg)
{
struct video_device *vfd = video_devdata(file);
const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
- void *fh = file->private_data;
- int ret = -EINVAL;
+ void *fh = file->private_data;
+ int ret = -EINVAL;
if ((vfd->debug & V4L2_DEBUG_IOCTL) &&
!(vfd->debug & V4L2_DEBUG_IOCTL_ARG)) {
V4L2 ioctls.
********************************************************/
if (_IOC_TYPE(cmd) == 'v' && _IOC_NR(cmd) < BASE_VIDIOCPRIVATE)
- return v4l_compat_translate_ioctl(inode, file, cmd, arg,
+ return v4l_compat_translate_ioctl(file, cmd, arg,
__video_do_ioctl);
#endif
return ret;
}
-int video_ioctl2(struct inode *inode, struct file *file,
+int __video_ioctl2(struct file *file,
unsigned int cmd, unsigned long arg)
{
char sbuf[128];
}
/* Handles IOCTL */
- err = __video_do_ioctl(inode, file, cmd, parg);
+ err = __video_do_ioctl(file, cmd, parg);
if (err == -ENOIOCTLCMD)
err = -EINVAL;
if (is_ext_ctrl) {
kfree(mbuf);
return err;
}
+EXPORT_SYMBOL(__video_ioctl2);
+
+int video_ioctl2(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return __video_ioctl2(file, cmd, arg);
+}
EXPORT_SYMBOL(video_ioctl2);
void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f)
{
- struct list_head *list, *q;
- struct videobuf_dvb_frontend *fe;
-
- mutex_lock(&f->lock);
- list_for_each_safe(list, q, &f->felist) {
- fe = list_entry(list, struct videobuf_dvb_frontend, felist);
- if (fe->dvb.net.dvbdev) {
- dvb_net_release(&fe->dvb.net);
- fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
- &fe->dvb.fe_mem);
- fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
- &fe->dvb.fe_hw);
- dvb_dmxdev_release(&fe->dvb.dmxdev);
- dvb_dmx_release(&fe->dvb.demux);
- dvb_unregister_frontend(fe->dvb.frontend);
- }
- if (fe->dvb.frontend)
- /* always allocated, may have been reset */
- dvb_frontend_detach(fe->dvb.frontend);
- list_del(list);
- kfree(fe);
- }
- mutex_unlock(&f->lock);
+ videobuf_dvb_dealloc_frontends(f);
dvb_unregister_adapter(&f->adapter);
}
return fe;
}
EXPORT_SYMBOL(videobuf_dvb_alloc_frontend);
+
+void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f)
+{
+ struct list_head *list, *q;
+ struct videobuf_dvb_frontend *fe;
+
+ mutex_lock(&f->lock);
+ list_for_each_safe(list, q, &f->felist) {
+ fe = list_entry(list, struct videobuf_dvb_frontend, felist);
+ if (fe->dvb.net.dvbdev) {
+ dvb_net_release(&fe->dvb.net);
+ fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
+ &fe->dvb.fe_mem);
+ fe->dvb.demux.dmx.remove_frontend(&fe->dvb.demux.dmx,
+ &fe->dvb.fe_hw);
+ dvb_dmxdev_release(&fe->dvb.dmxdev);
+ dvb_dmx_release(&fe->dvb.demux);
+ dvb_unregister_frontend(fe->dvb.frontend);
+ }
+ if (fe->dvb.frontend)
+ /* always allocated, may have been reset */
+ dvb_frontend_detach(fe->dvb.frontend);
+ list_del(list); /* remove list entry */
+ kfree(fe); /* free frontend allocation */
+ }
+ mutex_unlock(&f->lock);
+}
+EXPORT_SYMBOL(videobuf_dvb_dealloc_frontends);
if (-1 != dev->vfd->minor) {
printk(KERN_INFO "%s: unregistering /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->minor);
+ VIVI_MODULE_NAME, dev->vfd->num);
video_unregister_device(dev->vfd);
} else {
printk(KERN_INFO "%s: releasing /dev/video%d\n",
- VIVI_MODULE_NAME, dev->vfd->minor);
+ VIVI_MODULE_NAME, dev->vfd->num);
video_device_release(dev->vfd);
}
dev->vfd = vfd;
printk(KERN_INFO "%s: V4L2 device registered as /dev/video%d\n",
- VIVI_MODULE_NAME, vfd->minor);
+ VIVI_MODULE_NAME, vfd->num);
}
if (ret < 0) {
cam->sensor = CC_UNKNOWN;
DBG(1, "Image sensor initialization failed for %s (/dev/video%d). "
"Try to detach and attach this device again",
- symbolic(camlist, cam->id), cam->v4ldev->minor)
+ symbolic(camlist, cam->id), cam->v4ldev->num)
return err;
}
{
mutex_lock(&w9968cf_devlist_mutex);
- DBG(2, "V4L device deregistered: /dev/video%d", cam->v4ldev->minor)
+ DBG(2, "V4L device deregistered: /dev/video%d", cam->v4ldev->num)
video_unregister_device(cam->v4ldev);
list_del(&cam->v4llist);
DBG(2, "No supported image sensor has been detected by the "
"'ovcamchip' module for the %s (/dev/video%d). Make "
"sure it is loaded *before* (re)connecting the camera.",
- symbolic(camlist, cam->id), cam->v4ldev->minor)
+ symbolic(camlist, cam->id), cam->v4ldev->num)
mutex_unlock(&cam->dev_mutex);
up_read(&w9968cf_disconnect);
return -ENODEV;
if (cam->users) {
DBG(2, "%s (/dev/video%d) has been already occupied by '%s'",
- symbolic(camlist, cam->id),cam->v4ldev->minor,cam->command)
+ symbolic(camlist, cam->id), cam->v4ldev->num, cam->command)
if ((filp->f_flags & O_NONBLOCK)||(filp->f_flags & O_NDELAY)) {
mutex_unlock(&cam->dev_mutex);
up_read(&w9968cf_disconnect);
}
DBG(5, "Opening '%s', /dev/video%d ...",
- symbolic(camlist, cam->id), cam->v4ldev->minor)
+ symbolic(camlist, cam->id), cam->v4ldev->num)
cam->streaming = 0;
cam->misconfigured = 0;
.minheight = cam->minheight,
};
sprintf(cap.name, "W996[87]CF USB Camera #%d",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
cap.maxwidth = (cam->upscaling && w9968cf_vpp)
? max((u16)W9968CF_MAX_WIDTH, cam->maxwidth)
: cam->maxwidth;
goto fail;
}
- DBG(2, "V4L device registered as /dev/video%d", cam->v4ldev->minor)
+ DBG(2, "V4L device registered as /dev/video%d", cam->v4ldev->num)
/* Set some basic constants */
w9968cf_configure_camera(cam, udev, mod_id, dev_nr);
DBG(2, "The device is open (/dev/video%d)! "
"Process name: %s. Deregistration and memory "
"deallocation are deferred on close.",
- cam->v4ldev->minor, cam->command)
+ cam->v4ldev->num, cam->command)
cam->misconfigured = 1;
w9968cf_stop_transfer(cam);
wake_up_interruptible(&cam->wait_queue);
cam->state |= DEV_MISCONFIGURED;
DBG(1, "URB timeout reached. The camera is misconfigured. To "
"use it, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
{
struct zc0301_device *cam = container_of(kref, struct zc0301_device,
kref);
- DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
+ DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->num);
video_set_drvdata(cam->v4ldev, NULL);
video_unregister_device(cam->v4ldev);
usb_put_dev(cam->usbdev);
}
if (cam->users) {
- DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor);
+ DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->num);
DBG(3, "Simultaneous opens are not supported");
if ((filp->f_flags & O_NONBLOCK) ||
(filp->f_flags & O_NDELAY)) {
cam->frame_count = 0;
zc0301_empty_framequeues(cam);
- DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d is open", cam->v4ldev->num);
out:
mutex_unlock(&cam->open_mutex);
cam->users--;
wake_up_interruptible_nr(&cam->wait_open, 1);
- DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
+ DBG(3, "Video device /dev/video%d closed", cam->v4ldev->num);
kref_put(&cam->kref, zc0301_release_resources);
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_CROP failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of hardware problems. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -EIO;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_FMT failed because of not enough memory. To "
"use the camera, close and open /dev/video%d again.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
return -ENOMEM;
}
cam->state |= DEV_MISCONFIGURED;
DBG(1, "VIDIOC_S_JPEGCOMP failed because of hardware "
"problems. To use the camera, close and open "
- "/dev/video%d again.", cam->v4ldev->minor);
+ "/dev/video%d again.", cam->v4ldev->num);
return -EIO;
}
goto fail;
}
- DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->minor);
+ DBG(2, "V4L2 device registered as /dev/video%d", cam->v4ldev->num);
cam->module_param.force_munmap = force_munmap[dev_nr];
cam->module_param.frame_timeout = frame_timeout[dev_nr];
if (cam->users) {
DBG(2, "Device /dev/video%d is open! Deregistration and "
"memory deallocation are deferred.",
- cam->v4ldev->minor);
+ cam->v4ldev->num);
cam->state |= DEV_MISCONFIGURED;
zc0301_stop_transfer(cam);
cam->state |= DEV_DISCONNECTED;
usb_set_intfdata(intf, cam);
dev_info(&udev->dev, DRIVER_DESC " controlling video device %d\n",
- cam->vdev->minor);
+ cam->vdev->num);
return 0;
}
obj-$(CONFIG_MFD_WM8350) += wm8350.o
obj-$(CONFIG_MFD_WM8350_I2C) += wm8350-i2c.o
-obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o
+obj-$(CONFIG_TWL4030_CORE) += twl4030-core.o twl4030-irq.o
obj-$(CONFIG_MFD_CORE) += mfd-core.o
static int sm501_plat_probe(struct platform_device *dev)
{
struct sm501_devdata *sm;
- int err;
+ int ret;
sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
if (sm == NULL) {
dev_err(&dev->dev, "no memory for device data\n");
- err = -ENOMEM;
+ ret = -ENOMEM;
goto err1;
}
sm->dev = &dev->dev;
sm->pdev_id = dev->id;
- sm->irq = platform_get_irq(dev, 0);
- sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
- sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
sm->platdata = dev->dev.platform_data;
- if (sm->irq < 0) {
+ ret = platform_get_irq(dev, 0);
+ if (ret < 0) {
dev_err(&dev->dev, "failed to get irq resource\n");
- err = sm->irq;
goto err_res;
}
+ sm->irq = ret;
+ sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
+ sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (sm->io_res == NULL || sm->mem_res == NULL) {
dev_err(&dev->dev, "failed to get IO resource\n");
- err = -ENOENT;
+ ret = -ENOENT;
goto err_res;
}
if (sm->regs_claim == NULL) {
dev_err(&dev->dev, "cannot claim registers\n");
- err= -EBUSY;
+ ret = -EBUSY;
goto err_res;
}
if (sm->regs == NULL) {
dev_err(&dev->dev, "cannot remap registers\n");
- err = -EIO;
+ ret = -EIO;
goto err_claim;
}
err_res:
kfree(sm);
err1:
- return err;
+ return ret;
}
goto err3;
}
- sm->regs = ioremap(pci_resource_start(dev, 1),
- pci_resource_len(dev, 1));
+ sm->regs = pci_ioremap_bar(dev, 1);
if (sm->regs == NULL) {
dev_err(&dev->dev, "cannot remap registers\n");
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include <linux/kernel_stat.h>
#include <linux/init.h>
#include <linux/mutex.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/random.h>
-#include <linux/kthread.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/i2c/twl4030.h>
#define twl_has_usb() false
#endif
-static inline void activate_irq(int irq)
-{
-#ifdef CONFIG_ARM
- /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
- * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE.
- */
- set_irq_flags(irq, IRQF_VALID);
-#else
- /* same effect on other architectures */
- set_irq_noprobe(irq);
-#endif
-}
-
-/* Primary Interrupt Handler on TWL4030 Registers */
-
-/* Register Definitions */
-
-#define REG_PIH_ISR_P1 (0x1)
-#define REG_PIH_ISR_P2 (0x2)
-#define REG_PIH_SIR (0x3)
/* Triton Core internal information (BEGIN) */
/*----------------------------------------------------------------------*/
-/**
- * struct twl4030_mod_iregs - TWL module IMR/ISR regs to mask/clear at init
- * @mod_no: TWL4030 module number (e.g., TWL4030_MODULE_GPIO)
- * @sih_ctrl: address of module SIH_CTRL register
- * @reg_cnt: number of IMR/ISR regs
- * @imrs: pointer to array of TWL module interrupt mask register indices
- * @isrs: pointer to array of TWL module interrupt status register indices
- *
- * Ties together TWL4030 modules and lists of IMR/ISR registers to mask/clear
- * during twl_init_irq().
- */
-struct twl4030_mod_iregs {
- const u8 mod_no;
- const u8 sih_ctrl;
- const u8 reg_cnt;
- const u8 *imrs;
- const u8 *isrs;
-};
-
-/* TWL4030 INT module interrupt mask registers */
-static const u8 __initconst twl4030_int_imr_regs[] = {
- TWL4030_INT_PWR_IMR1,
- TWL4030_INT_PWR_IMR2,
-};
-
-/* TWL4030 INT module interrupt status registers */
-static const u8 __initconst twl4030_int_isr_regs[] = {
- TWL4030_INT_PWR_ISR1,
- TWL4030_INT_PWR_ISR2,
-};
-
-/* TWL4030 INTERRUPTS module interrupt mask registers */
-static const u8 __initconst twl4030_interrupts_imr_regs[] = {
- TWL4030_INTERRUPTS_BCIIMR1A,
- TWL4030_INTERRUPTS_BCIIMR1B,
- TWL4030_INTERRUPTS_BCIIMR2A,
- TWL4030_INTERRUPTS_BCIIMR2B,
-};
-
-/* TWL4030 INTERRUPTS module interrupt status registers */
-static const u8 __initconst twl4030_interrupts_isr_regs[] = {
- TWL4030_INTERRUPTS_BCIISR1A,
- TWL4030_INTERRUPTS_BCIISR1B,
- TWL4030_INTERRUPTS_BCIISR2A,
- TWL4030_INTERRUPTS_BCIISR2B,
-};
-
-/* TWL4030 MADC module interrupt mask registers */
-static const u8 __initconst twl4030_madc_imr_regs[] = {
- TWL4030_MADC_IMR1,
- TWL4030_MADC_IMR2,
-};
-
-/* TWL4030 MADC module interrupt status registers */
-static const u8 __initconst twl4030_madc_isr_regs[] = {
- TWL4030_MADC_ISR1,
- TWL4030_MADC_ISR2,
-};
-
-/* TWL4030 keypad module interrupt mask registers */
-static const u8 __initconst twl4030_keypad_imr_regs[] = {
- TWL4030_KEYPAD_KEYP_IMR1,
- TWL4030_KEYPAD_KEYP_IMR2,
-};
-
-/* TWL4030 keypad module interrupt status registers */
-static const u8 __initconst twl4030_keypad_isr_regs[] = {
- TWL4030_KEYPAD_KEYP_ISR1,
- TWL4030_KEYPAD_KEYP_ISR2,
-};
-
-/* TWL4030 GPIO module interrupt mask registers */
-static const u8 __initconst twl4030_gpio_imr_regs[] = {
- REG_GPIO_IMR1A,
- REG_GPIO_IMR1B,
- REG_GPIO_IMR2A,
- REG_GPIO_IMR2B,
- REG_GPIO_IMR3A,
- REG_GPIO_IMR3B,
-};
-
-/* TWL4030 GPIO module interrupt status registers */
-static const u8 __initconst twl4030_gpio_isr_regs[] = {
- REG_GPIO_ISR1A,
- REG_GPIO_ISR1B,
- REG_GPIO_ISR2A,
- REG_GPIO_ISR2B,
- REG_GPIO_ISR3A,
- REG_GPIO_ISR3B,
-};
-
-/* TWL4030 modules that have IMR/ISR registers that must be masked/cleared */
-static const struct twl4030_mod_iregs __initconst twl4030_mod_regs[] = {
- {
- .mod_no = TWL4030_MODULE_INT,
- .sih_ctrl = TWL4030_INT_PWR_SIH_CTRL,
- .reg_cnt = ARRAY_SIZE(twl4030_int_imr_regs),
- .imrs = twl4030_int_imr_regs,
- .isrs = twl4030_int_isr_regs,
- },
- {
- .mod_no = TWL4030_MODULE_INTERRUPTS,
- .sih_ctrl = TWL4030_INTERRUPTS_BCISIHCTRL,
- .reg_cnt = ARRAY_SIZE(twl4030_interrupts_imr_regs),
- .imrs = twl4030_interrupts_imr_regs,
- .isrs = twl4030_interrupts_isr_regs,
- },
- {
- .mod_no = TWL4030_MODULE_MADC,
- .sih_ctrl = TWL4030_MADC_SIH_CTRL,
- .reg_cnt = ARRAY_SIZE(twl4030_madc_imr_regs),
- .imrs = twl4030_madc_imr_regs,
- .isrs = twl4030_madc_isr_regs,
- },
- {
- .mod_no = TWL4030_MODULE_KEYPAD,
- .sih_ctrl = TWL4030_KEYPAD_KEYP_SIH_CTRL,
- .reg_cnt = ARRAY_SIZE(twl4030_keypad_imr_regs),
- .imrs = twl4030_keypad_imr_regs,
- .isrs = twl4030_keypad_isr_regs,
- },
- {
- .mod_no = TWL4030_MODULE_GPIO,
- .sih_ctrl = REG_GPIO_SIH_CTRL,
- .reg_cnt = ARRAY_SIZE(twl4030_gpio_imr_regs),
- .imrs = twl4030_gpio_imr_regs,
- .isrs = twl4030_gpio_isr_regs,
- },
-};
-
-/*----------------------------------------------------------------*/
-
/* is driver active, bound to a chip? */
static bool inuse;
/*----------------------------------------------------------------------*/
-/*
- * TWL4030 doesn't have PIH mask, hence dummy function for mask
- * and unmask of the (eight) interrupts reported at that level ...
- * masking is only available from SIH (secondary) modules.
- */
-
-static void twl4030_i2c_ackirq(unsigned int irq)
-{
-}
-
-static void twl4030_i2c_disableint(unsigned int irq)
-{
-}
-
-static void twl4030_i2c_enableint(unsigned int irq)
-{
-}
-
-static struct irq_chip twl4030_irq_chip = {
- .name = "twl4030",
- .ack = twl4030_i2c_ackirq,
- .mask = twl4030_i2c_disableint,
- .unmask = twl4030_i2c_enableint,
-};
-
-/*----------------------------------------------------------------------*/
-
/* Exported Functions */
/**
/*----------------------------------------------------------------------*/
-static unsigned twl4030_irq_base;
-
-static struct completion irq_event;
-
-/*
- * This thread processes interrupts reported by the Primary Interrupt Handler.
- */
-static int twl4030_irq_thread(void *data)
-{
- long irq = (long)data;
- irq_desc_t *desc = irq_desc + irq;
- static unsigned i2c_errors;
- const static unsigned max_i2c_errors = 100;
-
- current->flags |= PF_NOFREEZE;
-
- while (!kthread_should_stop()) {
- int ret;
- int module_irq;
- u8 pih_isr;
-
- /* Wait for IRQ, then read PIH irq status (also blocking) */
- wait_for_completion_interruptible(&irq_event);
-
- ret = twl4030_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr,
- REG_PIH_ISR_P1);
- if (ret) {
- pr_warning("%s: I2C error %d reading PIH ISR\n",
- DRIVER_NAME, ret);
- if (++i2c_errors >= max_i2c_errors) {
- printk(KERN_ERR "Maximum I2C error count"
- " exceeded. Terminating %s.\n",
- __func__);
- break;
- }
- complete(&irq_event);
- continue;
- }
-
- /* these handlers deal with the relevant SIH irq status */
- local_irq_disable();
- for (module_irq = twl4030_irq_base;
- pih_isr;
- pih_isr >>= 1, module_irq++) {
- if (pih_isr & 0x1) {
- irq_desc_t *d = irq_desc + module_irq;
-
- d->handle_irq(module_irq, d);
- }
- }
- local_irq_enable();
-
- desc->chip->unmask(irq);
- }
-
- return 0;
-}
-
/*
- * do_twl4030_irq() is the desc->handle method for the twl4030 interrupt.
- * This is a chained interrupt, so there is no desc->action method for it.
- * Now we need to query the interrupt controller in the twl4030 to determine
- * which module is generating the interrupt request. However, we can't do i2c
- * transactions in interrupt context, so we must defer that work to a kernel
- * thread. All we do here is acknowledge and mask the interrupt and wakeup
- * the kernel thread.
+ * NOTE: We know the first 8 IRQs after pdata->base_irq are
+ * for the PIH, and the next are for the PWR_INT SIH, since
+ * that's how twl_init_irq() sets things up.
*/
-static void do_twl4030_irq(unsigned int irq, irq_desc_t *desc)
-{
- const unsigned int cpu = smp_processor_id();
-
- /*
- * Earlier this was desc->triggered = 1;
- */
- desc->status |= IRQ_LEVEL;
-
- /*
- * Acknowledge, clear _AND_ disable the interrupt.
- */
- desc->chip->ack(irq);
-
- if (!desc->depth) {
- kstat_cpu(cpu).irqs[irq]++;
-
- complete(&irq_event);
- }
-}
-
-static struct task_struct * __init start_twl4030_irq_thread(long irq)
-{
- struct task_struct *thread;
-
- init_completion(&irq_event);
- thread = kthread_run(twl4030_irq_thread, (void *)irq, "twl4030-irq");
- if (!thread)
- pr_err("%s: could not create twl4030 irq %ld thread!\n",
- DRIVER_NAME, irq);
-
- return thread;
-}
-
-/*----------------------------------------------------------------------*/
static int add_children(struct twl4030_platform_data *pdata)
{
if (status == 0) {
struct resource r = {
- .start = TWL4030_PWRIRQ_CHG_PRES,
+ .start = pdata->irq_base + 8 + 1,
.flags = IORESOURCE_IRQ,
};
/* RTC module IRQ */
if (status == 0) {
struct resource r = {
- /* REVISIT don't hard-wire this stuff */
- .start = TWL4030_PWRIRQ_RTC,
+ .start = pdata->irq_base + 8 + 3,
.flags = IORESOURCE_IRQ,
};
if (status == 0) {
struct resource r = {
- .start = TWL4030_PWRIRQ_USB_PRES,
+ .start = pdata->irq_base + 8 + 2,
.flags = IORESOURCE_IRQ,
};
/*----------------------------------------------------------------------*/
-/**
- * twl4030_i2c_clear_isr - clear TWL4030 SIH ISR regs via read + write
- * @mod_no: TWL4030 module number
- * @reg: register index to clear
- * @cor: value of the <module>_SIH_CTRL.COR bit (1 or 0)
- *
- * Either reads (cor == 1) or writes (cor == 0) to a TWL4030 interrupt
- * status register to ensure that any prior interrupts are cleared.
- * Returns the status from the I2C read operation.
- */
-static int __init twl4030_i2c_clear_isr(u8 mod_no, u8 reg, u8 cor)
-{
- u8 tmp;
-
- return (cor) ? twl4030_i2c_read_u8(mod_no, &tmp, reg) :
- twl4030_i2c_write_u8(mod_no, 0xff, reg);
-}
-
-/**
- * twl4030_read_cor_bit - are TWL module ISRs cleared by reads or writes?
- * @mod_no: TWL4030 module number
- * @reg: register index to clear
- *
- * Returns 1 if the TWL4030 SIH interrupt status registers (ISRs) for
- * the specified TWL module are cleared by reads, or 0 if cleared by
- * writes.
- */
-static int twl4030_read_cor_bit(u8 mod_no, u8 reg)
-{
- u8 tmp = 0;
-
- WARN_ON(twl4030_i2c_read_u8(mod_no, &tmp, reg) < 0);
-
- tmp &= TWL4030_SIH_CTRL_COR_MASK;
- tmp >>= __ffs(TWL4030_SIH_CTRL_COR_MASK);
-
- return tmp;
-}
-
-/**
- * twl4030_mask_clear_intrs - mask and clear all TWL4030 interrupts
- * @t: pointer to twl4030_mod_iregs array
- * @t_sz: ARRAY_SIZE(t) (starting at 1)
- *
- * Mask all TWL4030 interrupt mask registers (IMRs) and clear all
- * interrupt status registers (ISRs). No return value, but will WARN if
- * any I2C operations fail.
- */
-static void __init twl4030_mask_clear_intrs(const struct twl4030_mod_iregs *t,
- const u8 t_sz)
-{
- int i, j;
-
- /*
- * N.B. - further efficiency is possible here. Eight I2C
- * operations on BCI and GPIO modules are avoidable if I2C
- * burst read/write transactions were implemented. Would
- * probably save about 1ms of boot time and a small amount of
- * power.
- */
- for (i = 0; i < t_sz; i++) {
- const struct twl4030_mod_iregs tmr = t[i];
- int cor;
-
- /* Are ISRs cleared by reads or writes? */
- cor = twl4030_read_cor_bit(tmr.mod_no, tmr.sih_ctrl);
-
- for (j = 0; j < tmr.reg_cnt; j++) {
-
- /* Mask interrupts at the TWL4030 */
- WARN_ON(twl4030_i2c_write_u8(tmr.mod_no, 0xff,
- tmr.imrs[j]) < 0);
-
- /* Clear TWL4030 ISRs */
- WARN_ON(twl4030_i2c_clear_isr(tmr.mod_no,
- tmr.isrs[j], cor) < 0);
- }
- }
-}
-
-
-static void twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
-{
- int i;
-
- /*
- * Mask and clear all TWL4030 interrupts since initially we do
- * not have any TWL4030 module interrupt handlers present
- */
- twl4030_mask_clear_intrs(twl4030_mod_regs,
- ARRAY_SIZE(twl4030_mod_regs));
-
- twl4030_irq_base = irq_base;
-
- /* install an irq handler for each of the PIH modules */
- for (i = irq_base; i < irq_end; i++) {
- set_irq_chip_and_handler(i, &twl4030_irq_chip,
- handle_simple_irq);
- activate_irq(i);
- }
-
- /* install an irq handler to demultiplex the TWL4030 interrupt */
- set_irq_data(irq_num, start_twl4030_irq_thread(irq_num));
- set_irq_chained_handler(irq_num, do_twl4030_irq);
-}
-
-/*----------------------------------------------------------------------*/
+int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end);
+int twl_exit_irq(void);
static int twl4030_remove(struct i2c_client *client)
{
unsigned i;
+ int status;
- /* FIXME undo twl_init_irq() */
- if (twl4030_irq_base) {
- dev_err(&client->dev, "can't yet clean up IRQs?\n");
- return -ENOSYS;
- }
+ status = twl_exit_irq();
+ if (status < 0)
+ return status;
for (i = 0; i < TWL4030_NUM_SLAVES; i++) {
struct twl4030_client *twl = &twl4030_modules[i];
return -EIO;
}
- if (inuse || twl4030_irq_base) {
+ if (inuse) {
dev_dbg(&client->dev, "driver is already in use\n");
return -EBUSY;
}
if (client->irq
&& pdata->irq_base
&& pdata->irq_end > pdata->irq_base) {
- twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
- dev_info(&client->dev, "IRQ %d chains IRQs %d..%d\n",
- client->irq, pdata->irq_base, pdata->irq_end - 1);
+ status = twl_init_irq(client->irq, pdata->irq_base, pdata->irq_end);
+ if (status < 0)
+ goto fail;
}
status = add_children(pdata);
--- /dev/null
+/*
+ * twl4030-irq.c - TWL4030/TPS659x0 irq support
+ *
+ * Copyright (C) 2005-2006 Texas Instruments, Inc.
+ *
+ * Modifications to defer interrupt handling to a kernel thread:
+ * Copyright (C) 2006 MontaVista Software, Inc.
+ *
+ * Based on tlv320aic23.c:
+ * Copyright (c) by Kai Svahn <kai.svahn@nokia.com>
+ *
+ * Code cleanup and modifications to IRQ handler.
+ * by syed khasim <x0khasim@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * TWL4030 IRQ handling has two stages in hardware, and thus in software.
+ * The Primary Interrupt Handler (PIH) stage exposes status bits saying
+ * which Secondary Interrupt Handler (SIH) stage is raising an interrupt.
+ * SIH modules are more traditional IRQ components, which support per-IRQ
+ * enable/disable and trigger controls; they do most of the work.
+ *
+ * These chips are designed to support IRQ handling from two different
+ * I2C masters. Each has a dedicated IRQ line, and dedicated IRQ status
+ * and mask registers in the PIH and SIH modules.
+ *
+ * We set up IRQs starting at a platform-specified base, always starting
+ * with PIH and the SIH for PWR_INT and then usually adding GPIO:
+ * base + 0 .. base + 7 PIH
+ * base + 8 .. base + 15 SIH for PWR_INT
+ * base + 16 .. base + 33 SIH for GPIO
+ */
+
+/* PIH register offsets */
+#define REG_PIH_ISR_P1 0x01
+#define REG_PIH_ISR_P2 0x02
+#define REG_PIH_SIR 0x03 /* for testing */
+
+
+/* Linux could (eventually) use either IRQ line */
+static int irq_line;
+
+struct sih {
+ char name[8];
+ u8 module; /* module id */
+ u8 control_offset; /* for SIH_CTRL */
+ bool set_cor;
+
+ u8 bits; /* valid in isr/imr */
+ u8 bytes_ixr; /* bytelen of ISR/IMR/SIR */
+
+ u8 edr_offset;
+ u8 bytes_edr; /* bytelen of EDR */
+
+ /* SIR ignored -- set interrupt, for testing only */
+ struct irq_data {
+ u8 isr_offset;
+ u8 imr_offset;
+ } mask[2];
+ /* + 2 bytes padding */
+};
+
+#define SIH_INITIALIZER(modname, nbits) \
+ .module = TWL4030_MODULE_ ## modname, \
+ .control_offset = TWL4030_ ## modname ## _SIH_CTRL, \
+ .bits = nbits, \
+ .bytes_ixr = DIV_ROUND_UP(nbits, 8), \
+ .edr_offset = TWL4030_ ## modname ## _EDR, \
+ .bytes_edr = DIV_ROUND_UP((2*(nbits)), 8), \
+ .mask = { { \
+ .isr_offset = TWL4030_ ## modname ## _ISR1, \
+ .imr_offset = TWL4030_ ## modname ## _IMR1, \
+ }, \
+ { \
+ .isr_offset = TWL4030_ ## modname ## _ISR2, \
+ .imr_offset = TWL4030_ ## modname ## _IMR2, \
+ }, },
+
+/* register naming policies are inconsistent ... */
+#define TWL4030_INT_PWR_EDR TWL4030_INT_PWR_EDR1
+#define TWL4030_MODULE_KEYPAD_KEYP TWL4030_MODULE_KEYPAD
+#define TWL4030_MODULE_INT_PWR TWL4030_MODULE_INT
+
+
+/* Order in this table matches order in PIH_ISR. That is,
+ * BIT(n) in PIH_ISR is sih_modules[n].
+ */
+static const struct sih sih_modules[6] = {
+ [0] = {
+ .name = "gpio",
+ .module = TWL4030_MODULE_GPIO,
+ .control_offset = REG_GPIO_SIH_CTRL,
+ .set_cor = true,
+ .bits = TWL4030_GPIO_MAX,
+ .bytes_ixr = 3,
+ /* Note: *all* of these IRQs default to no-trigger */
+ .edr_offset = REG_GPIO_EDR1,
+ .bytes_edr = 5,
+ .mask = { {
+ .isr_offset = REG_GPIO_ISR1A,
+ .imr_offset = REG_GPIO_IMR1A,
+ }, {
+ .isr_offset = REG_GPIO_ISR1B,
+ .imr_offset = REG_GPIO_IMR1B,
+ }, },
+ },
+ [1] = {
+ .name = "keypad",
+ .set_cor = true,
+ SIH_INITIALIZER(KEYPAD_KEYP, 4)
+ },
+ [2] = {
+ .name = "bci",
+ .module = TWL4030_MODULE_INTERRUPTS,
+ .control_offset = TWL4030_INTERRUPTS_BCISIHCTRL,
+ .bits = 12,
+ .bytes_ixr = 2,
+ .edr_offset = TWL4030_INTERRUPTS_BCIEDR1,
+ /* Note: most of these IRQs default to no-trigger */
+ .bytes_edr = 3,
+ .mask = { {
+ .isr_offset = TWL4030_INTERRUPTS_BCIISR1A,
+ .imr_offset = TWL4030_INTERRUPTS_BCIIMR1A,
+ }, {
+ .isr_offset = TWL4030_INTERRUPTS_BCIISR1B,
+ .imr_offset = TWL4030_INTERRUPTS_BCIIMR1B,
+ }, },
+ },
+ [3] = {
+ .name = "madc",
+ SIH_INITIALIZER(MADC, 4)
+ },
+ [4] = {
+ /* USB doesn't use the same SIH organization */
+ .name = "usb",
+ },
+ [5] = {
+ .name = "power",
+ .set_cor = true,
+ SIH_INITIALIZER(INT_PWR, 8)
+ },
+ /* there are no SIH modules #6 or #7 ... */
+};
+
+#undef TWL4030_MODULE_KEYPAD_KEYP
+#undef TWL4030_MODULE_INT_PWR
+#undef TWL4030_INT_PWR_EDR
+
+/*----------------------------------------------------------------------*/
+
+static unsigned twl4030_irq_base;
+
+static struct completion irq_event;
+
+/*
+ * This thread processes interrupts reported by the Primary Interrupt Handler.
+ */
+static int twl4030_irq_thread(void *data)
+{
+ long irq = (long)data;
+ irq_desc_t *desc = irq_desc + irq;
+ static unsigned i2c_errors;
+ const static unsigned max_i2c_errors = 100;
+
+ current->flags |= PF_NOFREEZE;
+
+ while (!kthread_should_stop()) {
+ int ret;
+ int module_irq;
+ u8 pih_isr;
+
+ /* Wait for IRQ, then read PIH irq status (also blocking) */
+ wait_for_completion_interruptible(&irq_event);
+
+ ret = twl4030_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr,
+ REG_PIH_ISR_P1);
+ if (ret) {
+ pr_warning("twl4030: I2C error %d reading PIH ISR\n",
+ ret);
+ if (++i2c_errors >= max_i2c_errors) {
+ printk(KERN_ERR "Maximum I2C error count"
+ " exceeded. Terminating %s.\n",
+ __func__);
+ break;
+ }
+ complete(&irq_event);
+ continue;
+ }
+
+ /* these handlers deal with the relevant SIH irq status */
+ local_irq_disable();
+ for (module_irq = twl4030_irq_base;
+ pih_isr;
+ pih_isr >>= 1, module_irq++) {
+ if (pih_isr & 0x1) {
+ irq_desc_t *d = irq_desc + module_irq;
+
+ /* These can't be masked ... always warn
+ * if we get any surprises.
+ */
+ if (d->status & IRQ_DISABLED)
+ note_interrupt(module_irq, d,
+ IRQ_NONE);
+ else
+ d->handle_irq(module_irq, d);
+ }
+ }
+ local_irq_enable();
+
+ desc->chip->unmask(irq);
+ }
+
+ return 0;
+}
+
+/*
+ * handle_twl4030_pih() is the desc->handle method for the twl4030 interrupt.
+ * This is a chained interrupt, so there is no desc->action method for it.
+ * Now we need to query the interrupt controller in the twl4030 to determine
+ * which module is generating the interrupt request. However, we can't do i2c
+ * transactions in interrupt context, so we must defer that work to a kernel
+ * thread. All we do here is acknowledge and mask the interrupt and wakeup
+ * the kernel thread.
+ */
+static void handle_twl4030_pih(unsigned int irq, irq_desc_t *desc)
+{
+ /* Acknowledge, clear *AND* mask the interrupt... */
+ desc->chip->ack(irq);
+ complete(&irq_event);
+}
+
+static struct task_struct *start_twl4030_irq_thread(long irq)
+{
+ struct task_struct *thread;
+
+ init_completion(&irq_event);
+ thread = kthread_run(twl4030_irq_thread, (void *)irq, "twl4030-irq");
+ if (!thread)
+ pr_err("twl4030: could not create irq %ld thread!\n", irq);
+
+ return thread;
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * twl4030_init_sih_modules() ... start from a known state where no
+ * IRQs will be coming in, and where we can quickly enable them then
+ * handle them as they arrive. Mask all IRQs: maybe init SIH_CTRL.
+ *
+ * NOTE: we don't touch EDR registers here; they stay with hardware
+ * defaults or whatever the last value was. Note that when both EDR
+ * bits for an IRQ are clear, that's as if its IMR bit is set...
+ */
+static int twl4030_init_sih_modules(unsigned line)
+{
+ const struct sih *sih;
+ u8 buf[4];
+ int i;
+ int status;
+
+ /* line 0 == int1_n signal; line 1 == int2_n signal */
+ if (line > 1)
+ return -EINVAL;
+
+ irq_line = line;
+
+ /* disable all interrupts on our line */
+ memset(buf, 0xff, sizeof buf);
+ sih = sih_modules;
+ for (i = 0; i < ARRAY_SIZE(sih_modules); i++, sih++) {
+
+ /* skip USB -- it's funky */
+ if (!sih->bytes_ixr)
+ continue;
+
+ status = twl4030_i2c_write(sih->module, buf,
+ sih->mask[line].imr_offset, sih->bytes_ixr);
+ if (status < 0)
+ pr_err("twl4030: err %d initializing %s %s\n",
+ status, sih->name, "IMR");
+
+ /* Maybe disable "exclusive" mode; buffer second pending irq;
+ * set Clear-On-Read (COR) bit.
+ *
+ * NOTE that sometimes COR polarity is documented as being
+ * inverted: for MADC and BCI, COR=1 means "clear on write".
+ * And for PWR_INT it's not documented...
+ */
+ if (sih->set_cor) {
+ status = twl4030_i2c_write_u8(sih->module,
+ TWL4030_SIH_CTRL_COR_MASK,
+ sih->control_offset);
+ if (status < 0)
+ pr_err("twl4030: err %d initializing %s %s\n",
+ status, sih->name, "SIH_CTRL");
+ }
+ }
+
+ sih = sih_modules;
+ for (i = 0; i < ARRAY_SIZE(sih_modules); i++, sih++) {
+ u8 rxbuf[4];
+ int j;
+
+ /* skip USB */
+ if (!sih->bytes_ixr)
+ continue;
+
+ /* Clear pending interrupt status. Either the read was
+ * enough, or we need to write those bits. Repeat, in
+ * case an IRQ is pending (PENDDIS=0) ... that's not
+ * uncommon with PWR_INT.PWRON.
+ */
+ for (j = 0; j < 2; j++) {
+ status = twl4030_i2c_read(sih->module, rxbuf,
+ sih->mask[line].isr_offset, sih->bytes_ixr);
+ if (status < 0)
+ pr_err("twl4030: err %d initializing %s %s\n",
+ status, sih->name, "ISR");
+
+ if (!sih->set_cor)
+ status = twl4030_i2c_write(sih->module, buf,
+ sih->mask[line].isr_offset,
+ sih->bytes_ixr);
+ /* else COR=1 means read sufficed.
+ * (for most SIH modules...)
+ */
+ }
+ }
+
+ return 0;
+}
+
+static inline void activate_irq(int irq)
+{
+#ifdef CONFIG_ARM
+ /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
+ * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE.
+ */
+ set_irq_flags(irq, IRQF_VALID);
+#else
+ /* same effect on other architectures */
+ set_irq_noprobe(irq);
+#endif
+}
+
+/*----------------------------------------------------------------------*/
+
+static DEFINE_SPINLOCK(sih_agent_lock);
+
+static struct workqueue_struct *wq;
+
+struct sih_agent {
+ int irq_base;
+ const struct sih *sih;
+
+ u32 imr;
+ bool imr_change_pending;
+ struct work_struct mask_work;
+
+ u32 edge_change;
+ struct work_struct edge_work;
+};
+
+static void twl4030_sih_do_mask(struct work_struct *work)
+{
+ struct sih_agent *agent;
+ const struct sih *sih;
+ union {
+ u8 bytes[4];
+ u32 word;
+ } imr;
+ int status;
+
+ agent = container_of(work, struct sih_agent, mask_work);
+
+ /* see what work we have */
+ spin_lock_irq(&sih_agent_lock);
+ if (agent->imr_change_pending) {
+ sih = agent->sih;
+ /* byte[0] gets overwritten as we write ... */
+ imr.word = cpu_to_le32(agent->imr << 8);
+ agent->imr_change_pending = false;
+ } else
+ sih = NULL;
+ spin_unlock_irq(&sih_agent_lock);
+ if (!sih)
+ return;
+
+ /* write the whole mask ... simpler than subsetting it */
+ status = twl4030_i2c_write(sih->module, imr.bytes,
+ sih->mask[irq_line].imr_offset, sih->bytes_ixr);
+ if (status)
+ pr_err("twl4030: %s, %s --> %d\n", __func__,
+ "write", status);
+}
+
+static void twl4030_sih_do_edge(struct work_struct *work)
+{
+ struct sih_agent *agent;
+ const struct sih *sih;
+ u8 bytes[6];
+ u32 edge_change;
+ int status;
+
+ agent = container_of(work, struct sih_agent, edge_work);
+
+ /* see what work we have */
+ spin_lock_irq(&sih_agent_lock);
+ edge_change = agent->edge_change;
+ agent->edge_change = 0;;
+ sih = edge_change ? agent->sih : NULL;
+ spin_unlock_irq(&sih_agent_lock);
+ if (!sih)
+ return;
+
+ /* Read, reserving first byte for write scratch. Yes, this
+ * could be cached for some speedup ... but be careful about
+ * any processor on the other IRQ line, EDR registers are
+ * shared.
+ */
+ status = twl4030_i2c_read(sih->module, bytes + 1,
+ sih->edr_offset, sih->bytes_edr);
+ if (status) {
+ pr_err("twl4030: %s, %s --> %d\n", __func__,
+ "read", status);
+ return;
+ }
+
+ /* Modify only the bits we know must change */
+ while (edge_change) {
+ int i = fls(edge_change) - 1;
+ struct irq_desc *d = irq_desc + i + agent->irq_base;
+ int byte = 1 + (i >> 2);
+ int off = (i & 0x3) * 2;
+
+ bytes[byte] &= ~(0x03 << off);
+
+ spin_lock_irq(&d->lock);
+ if (d->status & IRQ_TYPE_EDGE_RISING)
+ bytes[byte] |= BIT(off + 1);
+ if (d->status & IRQ_TYPE_EDGE_FALLING)
+ bytes[byte] |= BIT(off + 0);
+ spin_unlock_irq(&d->lock);
+
+ edge_change &= ~BIT(i);
+ }
+
+ /* Write */
+ status = twl4030_i2c_write(sih->module, bytes,
+ sih->edr_offset, sih->bytes_edr);
+ if (status)
+ pr_err("twl4030: %s, %s --> %d\n", __func__,
+ "write", status);
+}
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * All irq_chip methods get issued from code holding irq_desc[irq].lock,
+ * which can't perform the underlying I2C operations (because they sleep).
+ * So we must hand them off to a thread (workqueue) and cope with asynch
+ * completion, potentially including some re-ordering, of these requests.
+ */
+
+static void twl4030_sih_mask(unsigned irq)
+{
+ struct sih_agent *sih = get_irq_chip_data(irq);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sih_agent_lock, flags);
+ sih->imr |= BIT(irq - sih->irq_base);
+ sih->imr_change_pending = true;
+ queue_work(wq, &sih->mask_work);
+ spin_unlock_irqrestore(&sih_agent_lock, flags);
+}
+
+static void twl4030_sih_unmask(unsigned irq)
+{
+ struct sih_agent *sih = get_irq_chip_data(irq);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sih_agent_lock, flags);
+ sih->imr &= ~BIT(irq - sih->irq_base);
+ sih->imr_change_pending = true;
+ queue_work(wq, &sih->mask_work);
+ spin_unlock_irqrestore(&sih_agent_lock, flags);
+}
+
+static int twl4030_sih_set_type(unsigned irq, unsigned trigger)
+{
+ struct sih_agent *sih = get_irq_chip_data(irq);
+ struct irq_desc *desc = irq_desc + irq;
+ unsigned long flags;
+
+ if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING))
+ return -EINVAL;
+
+ spin_lock_irqsave(&sih_agent_lock, flags);
+ if ((desc->status & IRQ_TYPE_SENSE_MASK) != trigger) {
+ desc->status &= ~IRQ_TYPE_SENSE_MASK;
+ desc->status |= trigger;
+ sih->edge_change |= BIT(irq - sih->irq_base);
+ queue_work(wq, &sih->edge_work);
+ }
+ spin_unlock_irqrestore(&sih_agent_lock, flags);
+ return 0;
+}
+
+static struct irq_chip twl4030_sih_irq_chip = {
+ .name = "twl4030",
+ .mask = twl4030_sih_mask,
+ .unmask = twl4030_sih_unmask,
+ .set_type = twl4030_sih_set_type,
+};
+
+/*----------------------------------------------------------------------*/
+
+static inline int sih_read_isr(const struct sih *sih)
+{
+ int status;
+ union {
+ u8 bytes[4];
+ u32 word;
+ } isr;
+
+ /* FIXME need retry-on-error ... */
+
+ isr.word = 0;
+ status = twl4030_i2c_read(sih->module, isr.bytes,
+ sih->mask[irq_line].isr_offset, sih->bytes_ixr);
+
+ return (status < 0) ? status : le32_to_cpu(isr.word);
+}
+
+/*
+ * Generic handler for SIH interrupts ... we "know" this is called
+ * in task context, with IRQs enabled.
+ */
+static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc)
+{
+ struct sih_agent *agent = get_irq_data(irq);
+ const struct sih *sih = agent->sih;
+ int isr;
+
+ /* reading ISR acks the IRQs, using clear-on-read mode */
+ local_irq_enable();
+ isr = sih_read_isr(sih);
+ local_irq_disable();
+
+ if (isr < 0) {
+ pr_err("twl4030: %s SIH, read ISR error %d\n",
+ sih->name, isr);
+ /* REVISIT: recover; eventually mask it all, etc */
+ return;
+ }
+
+ while (isr) {
+ irq = fls(isr);
+ irq--;
+ isr &= ~BIT(irq);
+
+ if (irq < sih->bits)
+ generic_handle_irq(agent->irq_base + irq);
+ else
+ pr_err("twl4030: %s SIH, invalid ISR bit %d\n",
+ sih->name, irq);
+ }
+}
+
+static unsigned twl4030_irq_next;
+
+/* returns the first IRQ used by this SIH bank,
+ * or negative errno
+ */
+int twl4030_sih_setup(int module)
+{
+ int sih_mod;
+ const struct sih *sih = NULL;
+ struct sih_agent *agent;
+ int i, irq;
+ int status = -EINVAL;
+ unsigned irq_base = twl4030_irq_next;
+
+ /* only support modules with standard clear-on-read for now */
+ for (sih_mod = 0, sih = sih_modules;
+ sih_mod < ARRAY_SIZE(sih_modules);
+ sih_mod++, sih++) {
+ if (sih->module == module && sih->set_cor) {
+ if (!WARN((irq_base + sih->bits) > NR_IRQS,
+ "irq %d for %s too big\n",
+ irq_base + sih->bits,
+ sih->name))
+ status = 0;
+ break;
+ }
+ }
+ if (status < 0)
+ return status;
+
+ agent = kzalloc(sizeof *agent, GFP_KERNEL);
+ if (!agent)
+ return -ENOMEM;
+
+ status = 0;
+
+ agent->irq_base = irq_base;
+ agent->sih = sih;
+ agent->imr = ~0;
+ INIT_WORK(&agent->mask_work, twl4030_sih_do_mask);
+ INIT_WORK(&agent->edge_work, twl4030_sih_do_edge);
+
+ for (i = 0; i < sih->bits; i++) {
+ irq = irq_base + i;
+
+ set_irq_chip_and_handler(irq, &twl4030_sih_irq_chip,
+ handle_edge_irq);
+ set_irq_chip_data(irq, agent);
+ activate_irq(irq);
+ }
+
+ status = irq_base;
+ twl4030_irq_next += i;
+
+ /* replace generic PIH handler (handle_simple_irq) */
+ irq = sih_mod + twl4030_irq_base;
+ set_irq_data(irq, agent);
+ set_irq_chained_handler(irq, handle_twl4030_sih);
+
+ pr_info("twl4030: %s (irq %d) chaining IRQs %d..%d\n", sih->name,
+ irq, irq_base, twl4030_irq_next - 1);
+
+ return status;
+}
+
+/* FIXME need a call to reverse twl4030_sih_setup() ... */
+
+
+/*----------------------------------------------------------------------*/
+
+/* FIXME pass in which interrupt line we'll use ... */
+#define twl_irq_line 0
+
+int twl_init_irq(int irq_num, unsigned irq_base, unsigned irq_end)
+{
+ static struct irq_chip twl4030_irq_chip;
+
+ int status;
+ int i;
+ struct task_struct *task;
+
+ /*
+ * Mask and clear all TWL4030 interrupts since initially we do
+ * not have any TWL4030 module interrupt handlers present
+ */
+ status = twl4030_init_sih_modules(twl_irq_line);
+ if (status < 0)
+ return status;
+
+ wq = create_singlethread_workqueue("twl4030-irqchip");
+ if (!wq) {
+ pr_err("twl4030: workqueue FAIL\n");
+ return -ESRCH;
+ }
+
+ twl4030_irq_base = irq_base;
+
+ /* install an irq handler for each of the SIH modules;
+ * clone dummy irq_chip since PIH can't *do* anything
+ */
+ twl4030_irq_chip = dummy_irq_chip;
+ twl4030_irq_chip.name = "twl4030";
+
+ twl4030_sih_irq_chip.ack = dummy_irq_chip.ack;
+
+ for (i = irq_base; i < irq_end; i++) {
+ set_irq_chip_and_handler(i, &twl4030_irq_chip,
+ handle_simple_irq);
+ activate_irq(i);
+ }
+ twl4030_irq_next = i;
+ pr_info("twl4030: %s (irq %d) chaining IRQs %d..%d\n", "PIH",
+ irq_num, irq_base, twl4030_irq_next - 1);
+
+ /* ... and the PWR_INT module ... */
+ status = twl4030_sih_setup(TWL4030_MODULE_INT);
+ if (status < 0) {
+ pr_err("twl4030: sih_setup PWR INT --> %d\n", status);
+ goto fail;
+ }
+
+ /* install an irq handler to demultiplex the TWL4030 interrupt */
+ task = start_twl4030_irq_thread(irq_num);
+ if (!task) {
+ pr_err("twl4030: irq thread FAIL\n");
+ status = -ESRCH;
+ goto fail;
+ }
+
+ set_irq_data(irq_num, task);
+ set_irq_chained_handler(irq_num, handle_twl4030_pih);
+
+ return status;
+
+fail:
+ for (i = irq_base; i < irq_end; i++)
+ set_irq_chip_and_handler(i, NULL, NULL);
+ destroy_workqueue(wq);
+ wq = NULL;
+ return status;
+}
+
+int twl_exit_irq(void)
+{
+ /* FIXME undo twl_init_irq() */
+ if (twl4030_irq_base) {
+ pr_err("twl4030: can't yet clean up IRQs?\n");
+ return -ENOSYS;
+ }
+ return 0;
+}
(wm8350->reg_cache[i] & ~wm8350_reg_io_map[i].writable)
| src[i - reg];
+ /* Don't store volatile bits */
+ wm8350->reg_cache[i] &= ~wm8350_reg_io_map[i].vol;
+
src[i - reg] = cpu_to_be16(src[i - reg]);
}
}
value = be16_to_cpu(value);
value &= wm8350_reg_io_map[i].readable;
+ value &= ~wm8350_reg_io_map[i].vol;
wm8350->reg_cache[i] = value;
} else
wm8350->reg_cache[i] = reg_map[i];
out:
return ret;
}
-EXPORT_SYMBOL_GPL(wm8350_create_cache);
/*
* Register a client device. This is non-fatal since there is no need to
This is the driver for the onboard card of MIPS Magnum 4000,
Acer PICA, Olivetti M700-10 and a few other identical OEM systems.
+config XTENSA_XT2000_SONIC
+ tristate "Xtensa XT2000 onboard SONIC Ethernet support"
+ depends on XTENSA_PLATFORM_XT2000
+ help
+ This is the driver for the onboard card of the Xtensa XT2000 board.
+
config MIPS_AU1X00_ENET
bool "MIPS AU1000 Ethernet support"
depends on SOC_AU1X00
This driver supports the on-chip 1/10Gbit Ethernet controller on
PA Semi's PWRficient line of chips.
+config MLX4_EN
+ tristate "Mellanox Technologies 10Gbit Ethernet support"
+ depends on PCI && INET
+ select MLX4_CORE
+ select INET_LRO
+ help
+ This driver supports Mellanox Technologies ConnectX Ethernet
+ devices.
+
config MLX4_CORE
tristate
depends on PCI
obj-$(CONFIG_MLX4_CORE) += mlx4/
obj-$(CONFIG_ENC28J60) += enc28j60.o
+obj-$(CONFIG_XTENSA_XT2000_SONIC) += xtsonic.o
+
obj-$(CONFIG_MACB) += macb.o
obj-$(CONFIG_ARM) += arm/
* Driver for the MPC5200 Fast Ethernet Controller - MDIO bus driver
*
* Copyright (C) 2007 Domen Puncer, Telargo, Inc.
+ * Copyright (C) 2008 Wolfram Sang, Pengutronix
*
* This file is licensed under the terms of the GNU General Public License
* version 2. This program is licensed "as is" without any warranty of any
struct mpc52xx_fec __iomem *regs;
};
-static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
+static int mpc52xx_fec_mdio_transfer(struct mii_bus *bus, int phy_id,
+ int reg, u32 value)
{
struct mpc52xx_fec_mdio_priv *priv = bus->priv;
struct mpc52xx_fec __iomem *fec;
int tries = 100;
- u32 request = FEC_MII_READ_FRAME;
+
+ value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
+ value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
fec = priv->regs;
out_be32(&fec->ievent, FEC_IEVENT_MII);
-
- request |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
- request |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
- out_be32(&priv->regs->mii_data, request);
+ out_be32(&priv->regs->mii_data, value);
/* wait for it to finish, this takes about 23 us on lite5200b */
while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
udelay(5);
- if (tries == 0)
+ if (!tries)
return -ETIMEDOUT;
- return in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK;
+ return value & FEC_MII_DATA_OP_RD ?
+ in_be32(&priv->regs->mii_data) & FEC_MII_DATA_DATAMSK : 0;
}
-static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg, u16 data)
+static int mpc52xx_fec_mdio_read(struct mii_bus *bus, int phy_id, int reg)
{
- struct mpc52xx_fec_mdio_priv *priv = bus->priv;
- struct mpc52xx_fec __iomem *fec;
- u32 value = data;
- int tries = 100;
-
- fec = priv->regs;
- out_be32(&fec->ievent, FEC_IEVENT_MII);
-
- value |= FEC_MII_WRITE_FRAME;
- value |= (phy_id << FEC_MII_DATA_PA_SHIFT) & FEC_MII_DATA_PA_MSK;
- value |= (reg << FEC_MII_DATA_RA_SHIFT) & FEC_MII_DATA_RA_MSK;
-
- out_be32(&priv->regs->mii_data, value);
-
- /* wait for request to finish */
- while (!(in_be32(&fec->ievent) & FEC_IEVENT_MII) && --tries)
- udelay(5);
-
- if (tries == 0)
- return -ETIMEDOUT;
+ return mpc52xx_fec_mdio_transfer(bus, phy_id, reg, FEC_MII_READ_FRAME);
+}
- return 0;
+static int mpc52xx_fec_mdio_write(struct mii_bus *bus, int phy_id, int reg,
+ u16 data)
+{
+ return mpc52xx_fec_mdio_transfer(bus, phy_id, reg,
+ data | FEC_MII_WRITE_FRAME);
}
-static int mpc52xx_fec_mdio_probe(struct of_device *of, const struct of_device_id *match)
+static int mpc52xx_fec_mdio_probe(struct of_device *of,
+ const struct of_device_id *match)
{
struct device *dev = &of->dev;
struct device_node *np = of->node;
dev_set_drvdata(dev, bus);
/* set MII speed */
- out_be32(&priv->regs->mii_speed, ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
+ out_be32(&priv->regs->mii_speed,
+ ((mpc52xx_find_ipb_freq(of->node) >> 20) / 5) << 1);
/* enable MII interrupt */
out_be32(&priv->regs->imask, in_be32(&priv->regs->imask) | FEC_IMASK_MII);
if (of_device_is_compatible(np, "ibm,emac-440ep") ||
of_device_is_compatible(np, "ibm,emac-440gr"))
dev->features |= EMAC_FTR_440EP_PHY_CLK_FIX;
- if (of_device_is_compatible(np, "ibm,emac-405ez"))
+ if (of_device_is_compatible(np, "ibm,emac-405ez")) {
+#ifdef CONFIG_IBM_NEW_EMAC_NO_FLOW_CONTROL
dev->features |= EMAC_FTR_NO_FLOW_CONTROL_40x;
+#else
+ printk(KERN_ERR "%s: Flow control not disabled!\n",
+ np->full_name);
+ return -ENXIO;
+#endif
+ }
+
}
/* Fixup some feature bits based on the device tree */
mal_schedule_poll(mal);
set_mal_dcrn(mal, MAL_TXEOBISR, r);
+#ifdef CONFIG_PPC_DCR_NATIVE
if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
(mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICTX));
+#endif
return IRQ_HANDLED;
}
mal_schedule_poll(mal);
set_mal_dcrn(mal, MAL_RXEOBISR, r);
+#ifdef CONFIG_PPC_DCR_NATIVE
if (mal_has_feature(mal, MAL_FTR_CLEAR_ICINTSTAT))
mtdcri(SDR0, DCRN_SDR_ICINTSTAT,
(mfdcri(SDR0, DCRN_SDR_ICINTSTAT) | ICINTSTAT_ICRX));
+#endif
return IRQ_HANDLED;
}
goto fail;
}
- if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez"))
+ if (of_device_is_compatible(ofdev->node, "ibm,mcmal-405ez")) {
+#if defined(CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT) && \
+ defined(CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR)
mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
MAL_FTR_COMMON_ERR_INT);
+#else
+ printk(KERN_ERR "%s: Support for 405EZ not enabled!\n",
+ ofdev->node->full_name);
+ err = -ENODEV;
+ goto fail;
+#endif
+ }
mal->txeob_irq = irq_of_parse_and_map(ofdev->node, 0);
mal->rxeob_irq = irq_of_parse_and_map(ofdev->node, 1);
obj-$(CONFIG_MLX4_CORE) += mlx4_core.o
mlx4_core-y := alloc.o catas.o cmd.o cq.o eq.o fw.o icm.o intf.o main.o mcg.o \
- mr.o pd.o profile.o qp.o reset.o srq.o
+ mr.o pd.o port.o profile.o qp.o reset.o srq.o
+
+obj-$(CONFIG_MLX4_EN) += mlx4_en.o
+
+mlx4_en-y := en_main.o en_tx.o en_rx.o en_params.o en_port.o en_cq.o \
+ en_resources.o en_netdev.o
obj = find_next_zero_bit(bitmap->table, bitmap->max, bitmap->last);
if (obj >= bitmap->max) {
- bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
+ bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+ & bitmap->mask;
obj = find_first_zero_bit(bitmap->table, bitmap->max);
}
if (obj < bitmap->max) {
set_bit(obj, bitmap->table);
- bitmap->last = (obj + 1) & (bitmap->max - 1);
+ bitmap->last = (obj + 1);
+ if (bitmap->last == bitmap->max)
+ bitmap->last = 0;
obj |= bitmap->top;
} else
obj = -1;
void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj)
{
- obj &= bitmap->max - 1;
+ mlx4_bitmap_free_range(bitmap, obj, 1);
+}
+
+static unsigned long find_aligned_range(unsigned long *bitmap,
+ u32 start, u32 nbits,
+ int len, int align)
+{
+ unsigned long end, i;
+
+again:
+ start = ALIGN(start, align);
+
+ while ((start < nbits) && test_bit(start, bitmap))
+ start += align;
+
+ if (start >= nbits)
+ return -1;
+
+ end = start+len;
+ if (end > nbits)
+ return -1;
+
+ for (i = start + 1; i < end; i++) {
+ if (test_bit(i, bitmap)) {
+ start = i + 1;
+ goto again;
+ }
+ }
+
+ return start;
+}
+
+u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align)
+{
+ u32 obj, i;
+
+ if (likely(cnt == 1 && align == 1))
+ return mlx4_bitmap_alloc(bitmap);
+
+ spin_lock(&bitmap->lock);
+
+ obj = find_aligned_range(bitmap->table, bitmap->last,
+ bitmap->max, cnt, align);
+ if (obj >= bitmap->max) {
+ bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+ & bitmap->mask;
+ obj = find_aligned_range(bitmap->table, 0, bitmap->max,
+ cnt, align);
+ }
+
+ if (obj < bitmap->max) {
+ for (i = 0; i < cnt; i++)
+ set_bit(obj + i, bitmap->table);
+ if (obj == bitmap->last) {
+ bitmap->last = (obj + cnt);
+ if (bitmap->last >= bitmap->max)
+ bitmap->last = 0;
+ }
+ obj |= bitmap->top;
+ } else
+ obj = -1;
+
+ spin_unlock(&bitmap->lock);
+
+ return obj;
+}
+
+void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt)
+{
+ u32 i;
+
+ obj &= bitmap->max + bitmap->reserved_top - 1;
spin_lock(&bitmap->lock);
- clear_bit(obj, bitmap->table);
+ for (i = 0; i < cnt; i++)
+ clear_bit(obj + i, bitmap->table);
bitmap->last = min(bitmap->last, obj);
- bitmap->top = (bitmap->top + bitmap->max) & bitmap->mask;
+ bitmap->top = (bitmap->top + bitmap->max + bitmap->reserved_top)
+ & bitmap->mask;
spin_unlock(&bitmap->lock);
}
-int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved)
+int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask,
+ u32 reserved_bot, u32 reserved_top)
{
int i;
bitmap->last = 0;
bitmap->top = 0;
- bitmap->max = num;
+ bitmap->max = num - reserved_top;
bitmap->mask = mask;
+ bitmap->reserved_top = reserved_top;
spin_lock_init(&bitmap->lock);
- bitmap->table = kzalloc(BITS_TO_LONGS(num) * sizeof (long), GFP_KERNEL);
+ bitmap->table = kzalloc(BITS_TO_LONGS(bitmap->max) *
+ sizeof (long), GFP_KERNEL);
if (!bitmap->table)
return -ENOMEM;
- for (i = 0; i < reserved; ++i)
+ for (i = 0; i < reserved_bot; ++i)
set_bit(i, bitmap->table);
return 0;
INIT_RADIX_TREE(&cq_table->tree, GFP_ATOMIC);
err = mlx4_bitmap_init(&cq_table->bitmap, dev->caps.num_cqs,
- dev->caps.num_cqs - 1, dev->caps.reserved_cqs);
+ dev->caps.num_cqs - 1, dev->caps.reserved_cqs, 0);
if (err)
return err;
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_en.h"
+
+static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event)
+{
+ return;
+}
+
+
+int mlx4_en_create_cq(struct mlx4_en_priv *priv,
+ struct mlx4_en_cq *cq,
+ int entries, int ring, enum cq_type mode)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ cq->size = entries;
+ if (mode == RX)
+ cq->buf_size = cq->size * sizeof(struct mlx4_cqe);
+ else
+ cq->buf_size = sizeof(struct mlx4_cqe);
+
+ cq->ring = ring;
+ cq->is_tx = mode;
+ spin_lock_init(&cq->lock);
+
+ err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres,
+ cq->buf_size, 2 * PAGE_SIZE);
+ if (err)
+ return err;
+
+ err = mlx4_en_map_buffer(&cq->wqres.buf);
+ if (err)
+ mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
+
+ return err;
+}
+
+int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ cq->dev = mdev->pndev[priv->port];
+ cq->mcq.set_ci_db = cq->wqres.db.db;
+ cq->mcq.arm_db = cq->wqres.db.db + 1;
+ *cq->mcq.set_ci_db = 0;
+ *cq->mcq.arm_db = 0;
+ cq->buf = (struct mlx4_cqe *) cq->wqres.buf.direct.buf;
+ memset(cq->buf, 0, cq->buf_size);
+
+ err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar,
+ cq->wqres.db.dma, &cq->mcq, cq->is_tx);
+ if (err)
+ return err;
+
+ cq->mcq.comp = cq->is_tx ? mlx4_en_tx_irq : mlx4_en_rx_irq;
+ cq->mcq.event = mlx4_en_cq_event;
+
+ if (cq->is_tx) {
+ init_timer(&cq->timer);
+ cq->timer.function = mlx4_en_poll_tx_cq;
+ cq->timer.data = (unsigned long) cq;
+ } else {
+ netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64);
+ napi_enable(&cq->napi);
+ }
+
+ return 0;
+}
+
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ mlx4_en_unmap_buffer(&cq->wqres.buf);
+ mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size);
+ cq->buf_size = 0;
+ cq->buf = NULL;
+}
+
+void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ if (cq->is_tx)
+ del_timer(&cq->timer);
+ else
+ napi_disable(&cq->napi);
+
+ mlx4_cq_free(mdev->dev, &cq->mcq);
+}
+
+/* Set rx cq moderation parameters */
+int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+ return mlx4_cq_modify(priv->mdev->dev, &cq->mcq,
+ cq->moder_cnt, cq->moder_time);
+}
+
+int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq)
+{
+ cq->armed = 1;
+ mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map,
+ &priv->mdev->uar_lock);
+
+ return 0;
+}
+
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/cpumask.h>
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/cpumask.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4_en.h"
+
+MODULE_AUTHOR("Liran Liss, Yevgeny Petrilin");
+MODULE_DESCRIPTION("Mellanox ConnectX HCA Ethernet driver");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_VERSION(DRV_VERSION " ("DRV_RELDATE")");
+
+static const char mlx4_en_version[] =
+ DRV_NAME ": Mellanox ConnectX HCA Ethernet driver v"
+ DRV_VERSION " (" DRV_RELDATE ")\n";
+
+static void mlx4_en_event(struct mlx4_dev *dev, void *endev_ptr,
+ enum mlx4_dev_event event, int port)
+{
+ struct mlx4_en_dev *mdev = (struct mlx4_en_dev *) endev_ptr;
+ struct mlx4_en_priv *priv;
+
+ if (!mdev->pndev[port])
+ return;
+
+ priv = netdev_priv(mdev->pndev[port]);
+ switch (event) {
+ case MLX4_DEV_EVENT_PORT_UP:
+ case MLX4_DEV_EVENT_PORT_DOWN:
+ /* To prevent races, we poll the link state in a separate
+ task rather than changing it here */
+ priv->link_state = event;
+ queue_work(mdev->workqueue, &priv->linkstate_task);
+ break;
+
+ case MLX4_DEV_EVENT_CATASTROPHIC_ERROR:
+ mlx4_err(mdev, "Internal error detected, restarting device\n");
+ break;
+
+ default:
+ mlx4_warn(mdev, "Unhandled event: %d\n", event);
+ }
+}
+
+static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
+{
+ struct mlx4_en_dev *mdev = endev_ptr;
+ int i;
+
+ mutex_lock(&mdev->state_lock);
+ mdev->device_up = false;
+ mutex_unlock(&mdev->state_lock);
+
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+ if (mdev->pndev[i])
+ mlx4_en_destroy_netdev(mdev->pndev[i]);
+
+ flush_workqueue(mdev->workqueue);
+ destroy_workqueue(mdev->workqueue);
+ mlx4_mr_free(dev, &mdev->mr);
+ mlx4_uar_free(dev, &mdev->priv_uar);
+ mlx4_pd_free(dev, mdev->priv_pdn);
+ kfree(mdev);
+}
+
+static void *mlx4_en_add(struct mlx4_dev *dev)
+{
+ static int mlx4_en_version_printed;
+ struct mlx4_en_dev *mdev;
+ int i;
+ int err;
+
+ if (!mlx4_en_version_printed) {
+ printk(KERN_INFO "%s", mlx4_en_version);
+ mlx4_en_version_printed++;
+ }
+
+ mdev = kzalloc(sizeof *mdev, GFP_KERNEL);
+ if (!mdev) {
+ dev_err(&dev->pdev->dev, "Device struct alloc failed, "
+ "aborting.\n");
+ err = -ENOMEM;
+ goto err_free_res;
+ }
+
+ if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
+ goto err_free_dev;
+
+ if (mlx4_uar_alloc(dev, &mdev->priv_uar))
+ goto err_pd;
+
+ mdev->uar_map = ioremap(mdev->priv_uar.pfn << PAGE_SHIFT, PAGE_SIZE);
+ if (!mdev->uar_map)
+ goto err_uar;
+ spin_lock_init(&mdev->uar_lock);
+
+ mdev->dev = dev;
+ mdev->dma_device = &(dev->pdev->dev);
+ mdev->pdev = dev->pdev;
+ mdev->device_up = false;
+
+ mdev->LSO_support = !!(dev->caps.flags & (1 << 15));
+ if (!mdev->LSO_support)
+ mlx4_warn(mdev, "LSO not supported, please upgrade to later "
+ "FW version to enable LSO\n");
+
+ if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
+ MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ,
+ 0, 0, &mdev->mr)) {
+ mlx4_err(mdev, "Failed allocating memory region\n");
+ goto err_uar;
+ }
+ if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
+ mlx4_err(mdev, "Failed enabling memory region\n");
+ goto err_mr;
+ }
+
+ /* Build device profile according to supplied module parameters */
+ err = mlx4_en_get_profile(mdev);
+ if (err) {
+ mlx4_err(mdev, "Bad module parameters, aborting.\n");
+ goto err_mr;
+ }
+
+ /* Configure wich ports to start according to module parameters */
+ mdev->port_cnt = 0;
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH)
+ mdev->port_cnt++;
+
+ /* If we did not receive an explicit number of Rx rings, default to
+ * the number of completion vectors populated by the mlx4_core */
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+ mlx4_info(mdev, "Using %d tx rings for port:%d\n",
+ mdev->profile.prof[i].tx_ring_num, i);
+ if (!mdev->profile.prof[i].rx_ring_num) {
+ mdev->profile.prof[i].rx_ring_num = 1;
+ mlx4_info(mdev, "Defaulting to %d rx rings for port:%d\n",
+ 1, i);
+ } else
+ mlx4_info(mdev, "Using %d rx rings for port:%d\n",
+ mdev->profile.prof[i].rx_ring_num, i);
+ }
+
+ /* Create our own workqueue for reset/multicast tasks
+ * Note: we cannot use the shared workqueue because of deadlocks caused
+ * by the rtnl lock */
+ mdev->workqueue = create_singlethread_workqueue("mlx4_en");
+ if (!mdev->workqueue) {
+ err = -ENOMEM;
+ goto err_close_nic;
+ }
+
+ /* At this stage all non-port specific tasks are complete:
+ * mark the card state as up */
+ mutex_init(&mdev->state_lock);
+ mdev->device_up = true;
+
+ /* Setup ports */
+
+ /* Create a netdev for each port */
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+ mlx4_info(mdev, "Activating port:%d\n", i);
+ if (mlx4_en_init_netdev(mdev, i, &mdev->profile.prof[i])) {
+ mdev->pndev[i] = NULL;
+ goto err_free_netdev;
+ }
+ }
+ return mdev;
+
+
+err_free_netdev:
+ mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_ETH) {
+ if (mdev->pndev[i])
+ mlx4_en_destroy_netdev(mdev->pndev[i]);
+ }
+
+ mutex_lock(&mdev->state_lock);
+ mdev->device_up = false;
+ mutex_unlock(&mdev->state_lock);
+ flush_workqueue(mdev->workqueue);
+
+ /* Stop event queue before we drop down to release shared SW state */
+
+err_close_nic:
+ destroy_workqueue(mdev->workqueue);
+err_mr:
+ mlx4_mr_free(dev, &mdev->mr);
+err_uar:
+ mlx4_uar_free(dev, &mdev->priv_uar);
+err_pd:
+ mlx4_pd_free(dev, mdev->priv_pdn);
+err_free_dev:
+ kfree(mdev);
+err_free_res:
+ return NULL;
+}
+
+static struct mlx4_interface mlx4_en_interface = {
+ .add = mlx4_en_add,
+ .remove = mlx4_en_remove,
+ .event = mlx4_en_event,
+};
+
+static int __init mlx4_en_init(void)
+{
+ return mlx4_register_interface(&mlx4_en_interface);
+}
+
+static void __exit mlx4_en_cleanup(void)
+{
+ mlx4_unregister_interface(&mlx4_en_interface);
+}
+
+module_init(mlx4_en_init);
+module_exit(mlx4_en_cleanup);
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/tcp.h>
+#include <linux/if_vlan.h>
+#include <linux/delay.h>
+
+#include <linux/mlx4/driver.h>
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+#include <linux/mlx4/cq.h>
+
+#include "mlx4_en.h"
+#include "en_port.h"
+
+
+static void mlx4_en_vlan_rx_register(struct net_device *dev, struct vlan_group *grp)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ mlx4_dbg(HW, priv, "Registering VLAN group:%p\n", grp);
+ priv->vlgrp = grp;
+
+ mutex_lock(&mdev->state_lock);
+ if (mdev->device_up && priv->port_up) {
+ err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, grp);
+ if (err)
+ mlx4_err(mdev, "Failed configuring VLAN filter\n");
+ }
+ mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ if (!priv->vlgrp)
+ return;
+
+ mlx4_dbg(HW, priv, "adding VLAN:%d (vlgrp entry:%p)\n",
+ vid, vlan_group_get_device(priv->vlgrp, vid));
+
+ /* Add VID to port VLAN filter */
+ mutex_lock(&mdev->state_lock);
+ if (mdev->device_up && priv->port_up) {
+ err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+ if (err)
+ mlx4_err(mdev, "Failed configuring VLAN filter\n");
+ }
+ mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ if (!priv->vlgrp)
+ return;
+
+ mlx4_dbg(HW, priv, "Killing VID:%d (vlgrp:%p vlgrp "
+ "entry:%p)\n", vid, priv->vlgrp,
+ vlan_group_get_device(priv->vlgrp, vid));
+ vlan_group_set_device(priv->vlgrp, vid, NULL);
+
+ /* Remove VID from port VLAN filter */
+ mutex_lock(&mdev->state_lock);
+ if (mdev->device_up && priv->port_up) {
+ err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+ if (err)
+ mlx4_err(mdev, "Failed configuring VLAN filter\n");
+ }
+ mutex_unlock(&mdev->state_lock);
+}
+
+static u64 mlx4_en_mac_to_u64(u8 *addr)
+{
+ u64 mac = 0;
+ int i;
+
+ for (i = 0; i < ETH_ALEN; i++) {
+ mac <<= 8;
+ mac |= addr[i];
+ }
+ return mac;
+}
+
+static int mlx4_en_set_mac(struct net_device *dev, void *addr)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct sockaddr *saddr = addr;
+
+ if (!is_valid_ether_addr(saddr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ memcpy(dev->dev_addr, saddr->sa_data, ETH_ALEN);
+ priv->mac = mlx4_en_mac_to_u64(dev->dev_addr);
+ queue_work(mdev->workqueue, &priv->mac_task);
+ return 0;
+}
+
+static void mlx4_en_do_set_mac(struct work_struct *work)
+{
+ struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+ mac_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err = 0;
+
+ mutex_lock(&mdev->state_lock);
+ if (priv->port_up) {
+ /* Remove old MAC and insert the new one */
+ mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+ err = mlx4_register_mac(mdev->dev, priv->port,
+ priv->mac, &priv->mac_index);
+ if (err)
+ mlx4_err(mdev, "Failed changing HW MAC address\n");
+ } else
+ mlx4_dbg(HW, priv, "Port is down, exiting...\n");
+
+ mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_clear_list(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct dev_mc_list *plist = priv->mc_list;
+ struct dev_mc_list *next;
+
+ while (plist) {
+ next = plist->next;
+ kfree(plist);
+ plist = next;
+ }
+ priv->mc_list = NULL;
+}
+
+static void mlx4_en_cache_mclist(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct dev_mc_list *mclist;
+ struct dev_mc_list *tmp;
+ struct dev_mc_list *plist = NULL;
+
+ for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
+ tmp = kmalloc(sizeof(struct dev_mc_list), GFP_ATOMIC);
+ if (!tmp) {
+ mlx4_err(mdev, "failed to allocate multicast list\n");
+ mlx4_en_clear_list(dev);
+ return;
+ }
+ memcpy(tmp, mclist, sizeof(struct dev_mc_list));
+ tmp->next = NULL;
+ if (plist)
+ plist->next = tmp;
+ else
+ priv->mc_list = tmp;
+ plist = tmp;
+ }
+}
+
+
+static void mlx4_en_set_multicast(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ if (!priv->port_up)
+ return;
+
+ queue_work(priv->mdev->workqueue, &priv->mcast_task);
+}
+
+static void mlx4_en_do_set_multicast(struct work_struct *work)
+{
+ struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+ mcast_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct net_device *dev = priv->dev;
+ struct dev_mc_list *mclist;
+ u64 mcast_addr = 0;
+ int err;
+
+ mutex_lock(&mdev->state_lock);
+ if (!mdev->device_up) {
+ mlx4_dbg(HW, priv, "Card is not up, ignoring "
+ "multicast change.\n");
+ goto out;
+ }
+ if (!priv->port_up) {
+ mlx4_dbg(HW, priv, "Port is down, ignoring "
+ "multicast change.\n");
+ goto out;
+ }
+
+ /*
+ * Promsicuous mode: disable all filters
+ */
+
+ if (dev->flags & IFF_PROMISC) {
+ if (!(priv->flags & MLX4_EN_FLAG_PROMISC)) {
+ if (netif_msg_rx_status(priv))
+ mlx4_warn(mdev, "Port:%d entering promiscuous mode\n",
+ priv->port);
+ priv->flags |= MLX4_EN_FLAG_PROMISC;
+
+ /* Enable promiscouos mode */
+ err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
+ priv->base_qpn, 1);
+ if (err)
+ mlx4_err(mdev, "Failed enabling "
+ "promiscous mode\n");
+
+ /* Disable port multicast filter (unconditionally) */
+ err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+ 0, MLX4_MCAST_DISABLE);
+ if (err)
+ mlx4_err(mdev, "Failed disabling "
+ "multicast filter\n");
+
+ /* Disable port VLAN filter */
+ err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, NULL);
+ if (err)
+ mlx4_err(mdev, "Failed disabling "
+ "VLAN filter\n");
+ }
+ goto out;
+ }
+
+ /*
+ * Not in promiscous mode
+ */
+
+ if (priv->flags & MLX4_EN_FLAG_PROMISC) {
+ if (netif_msg_rx_status(priv))
+ mlx4_warn(mdev, "Port:%d leaving promiscuous mode\n",
+ priv->port);
+ priv->flags &= ~MLX4_EN_FLAG_PROMISC;
+
+ /* Disable promiscouos mode */
+ err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port,
+ priv->base_qpn, 0);
+ if (err)
+ mlx4_err(mdev, "Failed disabling promiscous mode\n");
+
+ /* Enable port VLAN filter */
+ err = mlx4_SET_VLAN_FLTR(mdev->dev, priv->port, priv->vlgrp);
+ if (err)
+ mlx4_err(mdev, "Failed enabling VLAN filter\n");
+ }
+
+ /* Enable/disable the multicast filter according to IFF_ALLMULTI */
+ if (dev->flags & IFF_ALLMULTI) {
+ err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+ 0, MLX4_MCAST_DISABLE);
+ if (err)
+ mlx4_err(mdev, "Failed disabling multicast filter\n");
+ } else {
+ err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+ 0, MLX4_MCAST_DISABLE);
+ if (err)
+ mlx4_err(mdev, "Failed disabling multicast filter\n");
+
+ /* Flush mcast filter and init it with broadcast address */
+ mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, ETH_BCAST,
+ 1, MLX4_MCAST_CONFIG);
+
+ /* Update multicast list - we cache all addresses so they won't
+ * change while HW is updated holding the command semaphor */
+ netif_tx_lock_bh(dev);
+ mlx4_en_cache_mclist(dev);
+ netif_tx_unlock_bh(dev);
+ for (mclist = priv->mc_list; mclist; mclist = mclist->next) {
+ mcast_addr = mlx4_en_mac_to_u64(mclist->dmi_addr);
+ mlx4_SET_MCAST_FLTR(mdev->dev, priv->port,
+ mcast_addr, 0, MLX4_MCAST_CONFIG);
+ }
+ err = mlx4_SET_MCAST_FLTR(mdev->dev, priv->port, 0,
+ 0, MLX4_MCAST_ENABLE);
+ if (err)
+ mlx4_err(mdev, "Failed enabling multicast filter\n");
+
+ mlx4_en_clear_list(dev);
+ }
+out:
+ mutex_unlock(&mdev->state_lock);
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mlx4_en_netpoll(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_cq *cq;
+ unsigned long flags;
+ int i;
+
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ cq = &priv->rx_cq[i];
+ spin_lock_irqsave(&cq->lock, flags);
+ napi_synchronize(&cq->napi);
+ mlx4_en_process_rx_cq(dev, cq, 0);
+ spin_unlock_irqrestore(&cq->lock, flags);
+ }
+}
+#endif
+
+static void mlx4_en_tx_timeout(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ if (netif_msg_timer(priv))
+ mlx4_warn(mdev, "Tx timeout called on port:%d\n", priv->port);
+
+ if (netif_carrier_ok(dev)) {
+ priv->port_stats.tx_timeout++;
+ mlx4_dbg(DRV, priv, "Scheduling watchdog\n");
+ queue_work(mdev->workqueue, &priv->watchdog_task);
+ }
+}
+
+
+static struct net_device_stats *mlx4_en_get_stats(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ spin_lock_bh(&priv->stats_lock);
+ memcpy(&priv->ret_stats, &priv->stats, sizeof(priv->stats));
+ spin_unlock_bh(&priv->stats_lock);
+
+ return &priv->ret_stats;
+}
+
+static void mlx4_en_set_default_moderation(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_cq *cq;
+ int i;
+
+ /* If we haven't received a specific coalescing setting
+ * (module param), we set the moderation paramters as follows:
+ * - moder_cnt is set to the number of mtu sized packets to
+ * satisfy our coelsing target.
+ * - moder_time is set to a fixed value.
+ */
+ priv->rx_frames = (mdev->profile.rx_moder_cnt ==
+ MLX4_EN_AUTO_CONF) ?
+ MLX4_EN_RX_COAL_TARGET /
+ priv->dev->mtu + 1 :
+ mdev->profile.rx_moder_cnt;
+ priv->rx_usecs = (mdev->profile.rx_moder_time ==
+ MLX4_EN_AUTO_CONF) ?
+ MLX4_EN_RX_COAL_TIME :
+ mdev->profile.rx_moder_time;
+ mlx4_dbg(INTR, priv, "Default coalesing params for mtu:%d - "
+ "rx_frames:%d rx_usecs:%d\n",
+ priv->dev->mtu, priv->rx_frames, priv->rx_usecs);
+
+ /* Setup cq moderation params */
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ cq = &priv->rx_cq[i];
+ cq->moder_cnt = priv->rx_frames;
+ cq->moder_time = priv->rx_usecs;
+ }
+
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ cq = &priv->tx_cq[i];
+ cq->moder_cnt = MLX4_EN_TX_COAL_PKTS;
+ cq->moder_time = MLX4_EN_TX_COAL_TIME;
+ }
+
+ /* Reset auto-moderation params */
+ priv->pkt_rate_low = MLX4_EN_RX_RATE_LOW;
+ priv->rx_usecs_low = MLX4_EN_RX_COAL_TIME_LOW;
+ priv->pkt_rate_high = MLX4_EN_RX_RATE_HIGH;
+ priv->rx_usecs_high = MLX4_EN_RX_COAL_TIME_HIGH;
+ priv->sample_interval = MLX4_EN_SAMPLE_INTERVAL;
+ priv->adaptive_rx_coal = mdev->profile.auto_moder;
+ priv->last_moder_time = MLX4_EN_AUTO_CONF;
+ priv->last_moder_jiffies = 0;
+ priv->last_moder_packets = 0;
+ priv->last_moder_tx_packets = 0;
+ priv->last_moder_bytes = 0;
+}
+
+static void mlx4_en_auto_moderation(struct mlx4_en_priv *priv)
+{
+ unsigned long period = (unsigned long) (jiffies - priv->last_moder_jiffies);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_cq *cq;
+ unsigned long packets;
+ unsigned long rate;
+ unsigned long avg_pkt_size;
+ unsigned long rx_packets;
+ unsigned long rx_bytes;
+ unsigned long tx_packets;
+ unsigned long tx_pkt_diff;
+ unsigned long rx_pkt_diff;
+ int moder_time;
+ int i, err;
+
+ if (!priv->adaptive_rx_coal || period < priv->sample_interval * HZ)
+ return;
+
+ spin_lock_bh(&priv->stats_lock);
+ rx_packets = priv->stats.rx_packets;
+ rx_bytes = priv->stats.rx_bytes;
+ tx_packets = priv->stats.tx_packets;
+ spin_unlock_bh(&priv->stats_lock);
+
+ if (!priv->last_moder_jiffies || !period)
+ goto out;
+
+ tx_pkt_diff = ((unsigned long) (tx_packets -
+ priv->last_moder_tx_packets));
+ rx_pkt_diff = ((unsigned long) (rx_packets -
+ priv->last_moder_packets));
+ packets = max(tx_pkt_diff, rx_pkt_diff);
+ rate = packets * HZ / period;
+ avg_pkt_size = packets ? ((unsigned long) (rx_bytes -
+ priv->last_moder_bytes)) / packets : 0;
+
+ /* Apply auto-moderation only when packet rate exceeds a rate that
+ * it matters */
+ if (rate > MLX4_EN_RX_RATE_THRESH) {
+ /* If tx and rx packet rates are not balanced, assume that
+ * traffic is mainly BW bound and apply maximum moderation.
+ * Otherwise, moderate according to packet rate */
+ if (2 * tx_pkt_diff > 3 * rx_pkt_diff ||
+ 2 * rx_pkt_diff > 3 * tx_pkt_diff) {
+ moder_time = priv->rx_usecs_high;
+ } else {
+ if (rate < priv->pkt_rate_low)
+ moder_time = priv->rx_usecs_low;
+ else if (rate > priv->pkt_rate_high)
+ moder_time = priv->rx_usecs_high;
+ else
+ moder_time = (rate - priv->pkt_rate_low) *
+ (priv->rx_usecs_high - priv->rx_usecs_low) /
+ (priv->pkt_rate_high - priv->pkt_rate_low) +
+ priv->rx_usecs_low;
+ }
+ } else {
+ /* When packet rate is low, use default moderation rather than
+ * 0 to prevent interrupt storms if traffic suddenly increases */
+ moder_time = priv->rx_usecs;
+ }
+
+ mlx4_dbg(INTR, priv, "tx rate:%lu rx_rate:%lu\n",
+ tx_pkt_diff * HZ / period, rx_pkt_diff * HZ / period);
+
+ mlx4_dbg(INTR, priv, "Rx moder_time changed from:%d to %d period:%lu "
+ "[jiff] packets:%lu avg_pkt_size:%lu rate:%lu [p/s])\n",
+ priv->last_moder_time, moder_time, period, packets,
+ avg_pkt_size, rate);
+
+ if (moder_time != priv->last_moder_time) {
+ priv->last_moder_time = moder_time;
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ cq = &priv->rx_cq[i];
+ cq->moder_time = moder_time;
+ err = mlx4_en_set_cq_moder(priv, cq);
+ if (err) {
+ mlx4_err(mdev, "Failed modifying moderation for cq:%d "
+ "on port:%d\n", i, priv->port);
+ break;
+ }
+ }
+ }
+
+out:
+ priv->last_moder_packets = rx_packets;
+ priv->last_moder_tx_packets = tx_packets;
+ priv->last_moder_bytes = rx_bytes;
+ priv->last_moder_jiffies = jiffies;
+}
+
+static void mlx4_en_do_get_stats(struct work_struct *work)
+{
+ struct delayed_work *delay = container_of(work, struct delayed_work, work);
+ struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
+ stats_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ err = mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 0);
+ if (err)
+ mlx4_dbg(HW, priv, "Could not update stats for "
+ "port:%d\n", priv->port);
+
+ mutex_lock(&mdev->state_lock);
+ if (mdev->device_up) {
+ if (priv->port_up)
+ mlx4_en_auto_moderation(priv);
+
+ queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
+ }
+ mutex_unlock(&mdev->state_lock);
+}
+
+static void mlx4_en_linkstate(struct work_struct *work)
+{
+ struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+ linkstate_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int linkstate = priv->link_state;
+
+ mutex_lock(&mdev->state_lock);
+ /* If observable port state changed set carrier state and
+ * report to system log */
+ if (priv->last_link_state != linkstate) {
+ if (linkstate == MLX4_DEV_EVENT_PORT_DOWN) {
+ if (netif_msg_link(priv))
+ mlx4_info(mdev, "Port %d - link down\n", priv->port);
+ netif_carrier_off(priv->dev);
+ } else {
+ if (netif_msg_link(priv))
+ mlx4_info(mdev, "Port %d - link up\n", priv->port);
+ netif_carrier_on(priv->dev);
+ }
+ }
+ priv->last_link_state = linkstate;
+ mutex_unlock(&mdev->state_lock);
+}
+
+
+static int mlx4_en_start_port(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_cq *cq;
+ struct mlx4_en_tx_ring *tx_ring;
+ struct mlx4_en_rx_ring *rx_ring;
+ int rx_index = 0;
+ int tx_index = 0;
+ u16 stride;
+ int err = 0;
+ int i;
+ int j;
+
+ if (priv->port_up) {
+ mlx4_dbg(DRV, priv, "start port called while port already up\n");
+ return 0;
+ }
+
+ /* Calculate Rx buf size */
+ dev->mtu = min(dev->mtu, priv->max_mtu);
+ mlx4_en_calc_rx_buf(dev);
+ mlx4_dbg(DRV, priv, "Rx buf size:%d\n", priv->rx_skb_size);
+ stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+ DS_SIZE * priv->num_frags);
+ /* Configure rx cq's and rings */
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ cq = &priv->rx_cq[i];
+ rx_ring = &priv->rx_ring[i];
+
+ err = mlx4_en_activate_cq(priv, cq);
+ if (err) {
+ mlx4_err(mdev, "Failed activating Rx CQ\n");
+ goto rx_err;
+ }
+ for (j = 0; j < cq->size; j++)
+ cq->buf[j].owner_sr_opcode = MLX4_CQE_OWNER_MASK;
+ err = mlx4_en_set_cq_moder(priv, cq);
+ if (err) {
+ mlx4_err(mdev, "Failed setting cq moderation parameters");
+ mlx4_en_deactivate_cq(priv, cq);
+ goto cq_err;
+ }
+ mlx4_en_arm_cq(priv, cq);
+
+ ++rx_index;
+ }
+
+ err = mlx4_en_activate_rx_rings(priv);
+ if (err) {
+ mlx4_err(mdev, "Failed to activate RX rings\n");
+ goto cq_err;
+ }
+
+ err = mlx4_en_config_rss_steer(priv);
+ if (err) {
+ mlx4_err(mdev, "Failed configuring rss steering\n");
+ goto rx_err;
+ }
+
+ /* Configure tx cq's and rings */
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ /* Configure cq */
+ cq = &priv->tx_cq[i];
+ err = mlx4_en_activate_cq(priv, cq);
+ if (err) {
+ mlx4_err(mdev, "Failed allocating Tx CQ\n");
+ goto tx_err;
+ }
+ err = mlx4_en_set_cq_moder(priv, cq);
+ if (err) {
+ mlx4_err(mdev, "Failed setting cq moderation parameters");
+ mlx4_en_deactivate_cq(priv, cq);
+ goto tx_err;
+ }
+ mlx4_dbg(DRV, priv, "Resetting index of collapsed CQ:%d to -1\n", i);
+ cq->buf->wqe_index = cpu_to_be16(0xffff);
+
+ /* Configure ring */
+ tx_ring = &priv->tx_ring[i];
+ err = mlx4_en_activate_tx_ring(priv, tx_ring, cq->mcq.cqn,
+ priv->rx_ring[0].srq.srqn);
+ if (err) {
+ mlx4_err(mdev, "Failed allocating Tx ring\n");
+ mlx4_en_deactivate_cq(priv, cq);
+ goto tx_err;
+ }
+ /* Set initial ownership of all Tx TXBBs to SW (1) */
+ for (j = 0; j < tx_ring->buf_size; j += STAMP_STRIDE)
+ *((u32 *) (tx_ring->buf + j)) = 0xffffffff;
+ ++tx_index;
+ }
+
+ /* Configure port */
+ err = mlx4_SET_PORT_general(mdev->dev, priv->port,
+ priv->rx_skb_size + ETH_FCS_LEN,
+ mdev->profile.tx_pause,
+ mdev->profile.tx_ppp,
+ mdev->profile.rx_pause,
+ mdev->profile.rx_ppp);
+ if (err) {
+ mlx4_err(mdev, "Failed setting port general configurations"
+ " for port %d, with error %d\n", priv->port, err);
+ goto tx_err;
+ }
+ /* Set default qp number */
+ err = mlx4_SET_PORT_qpn_calc(mdev->dev, priv->port, priv->base_qpn, 0);
+ if (err) {
+ mlx4_err(mdev, "Failed setting default qp numbers\n");
+ goto tx_err;
+ }
+ /* Set port mac number */
+ mlx4_dbg(DRV, priv, "Setting mac for port %d\n", priv->port);
+ err = mlx4_register_mac(mdev->dev, priv->port,
+ priv->mac, &priv->mac_index);
+ if (err) {
+ mlx4_err(mdev, "Failed setting port mac\n");
+ goto tx_err;
+ }
+
+ /* Init port */
+ mlx4_dbg(HW, priv, "Initializing port\n");
+ err = mlx4_INIT_PORT(mdev->dev, priv->port);
+ if (err) {
+ mlx4_err(mdev, "Failed Initializing port\n");
+ goto mac_err;
+ }
+
+ /* Schedule multicast task to populate multicast list */
+ queue_work(mdev->workqueue, &priv->mcast_task);
+
+ priv->port_up = true;
+ netif_start_queue(dev);
+ return 0;
+
+mac_err:
+ mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+tx_err:
+ while (tx_index--) {
+ mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[tx_index]);
+ mlx4_en_deactivate_cq(priv, &priv->tx_cq[tx_index]);
+ }
+
+ mlx4_en_release_rss_steer(priv);
+rx_err:
+ for (i = 0; i < priv->rx_ring_num; i++)
+ mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[rx_index]);
+cq_err:
+ while (rx_index--)
+ mlx4_en_deactivate_cq(priv, &priv->rx_cq[rx_index]);
+
+ return err; /* need to close devices */
+}
+
+
+static void mlx4_en_stop_port(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int i;
+
+ if (!priv->port_up) {
+ mlx4_dbg(DRV, priv, "stop port (%d) called while port already down\n",
+ priv->port);
+ return;
+ }
+ netif_stop_queue(dev);
+
+ /* Synchronize with tx routine */
+ netif_tx_lock_bh(dev);
+ priv->port_up = false;
+ netif_tx_unlock_bh(dev);
+
+ /* close port*/
+ mlx4_CLOSE_PORT(mdev->dev, priv->port);
+
+ /* Unregister Mac address for the port */
+ mlx4_unregister_mac(mdev->dev, priv->port, priv->mac_index);
+
+ /* Free TX Rings */
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ mlx4_en_deactivate_tx_ring(priv, &priv->tx_ring[i]);
+ mlx4_en_deactivate_cq(priv, &priv->tx_cq[i]);
+ }
+ msleep(10);
+
+ for (i = 0; i < priv->tx_ring_num; i++)
+ mlx4_en_free_tx_buf(dev, &priv->tx_ring[i]);
+
+ /* Free RSS qps */
+ mlx4_en_release_rss_steer(priv);
+
+ /* Free RX Rings */
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ mlx4_en_deactivate_rx_ring(priv, &priv->rx_ring[i]);
+ while (test_bit(NAPI_STATE_SCHED, &priv->rx_cq[i].napi.state))
+ msleep(1);
+ mlx4_en_deactivate_cq(priv, &priv->rx_cq[i]);
+ }
+}
+
+static void mlx4_en_restart(struct work_struct *work)
+{
+ struct mlx4_en_priv *priv = container_of(work, struct mlx4_en_priv,
+ watchdog_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct net_device *dev = priv->dev;
+
+ mlx4_dbg(DRV, priv, "Watchdog task called for port %d\n", priv->port);
+ mlx4_en_stop_port(dev);
+ if (mlx4_en_start_port(dev))
+ mlx4_err(mdev, "Failed restarting port %d\n", priv->port);
+}
+
+
+static int mlx4_en_open(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int i;
+ int err = 0;
+
+ mutex_lock(&mdev->state_lock);
+
+ if (!mdev->device_up) {
+ mlx4_err(mdev, "Cannot open - device down/disabled\n");
+ err = -EBUSY;
+ goto out;
+ }
+
+ /* Reset HW statistics and performance counters */
+ if (mlx4_en_DUMP_ETH_STATS(mdev, priv->port, 1))
+ mlx4_dbg(HW, priv, "Failed dumping statistics\n");
+
+ memset(&priv->stats, 0, sizeof(priv->stats));
+ memset(&priv->pstats, 0, sizeof(priv->pstats));
+
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ priv->tx_ring[i].bytes = 0;
+ priv->tx_ring[i].packets = 0;
+ }
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ priv->rx_ring[i].bytes = 0;
+ priv->rx_ring[i].packets = 0;
+ }
+
+ mlx4_en_set_default_moderation(priv);
+ err = mlx4_en_start_port(dev);
+ if (err)
+ mlx4_err(mdev, "Failed starting port:%d\n", priv->port);
+
+out:
+ mutex_unlock(&mdev->state_lock);
+ return err;
+}
+
+
+static int mlx4_en_close(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ if (netif_msg_ifdown(priv))
+ mlx4_info(mdev, "Close called for port:%d\n", priv->port);
+
+ mutex_lock(&mdev->state_lock);
+
+ mlx4_en_stop_port(dev);
+ netif_carrier_off(dev);
+
+ mutex_unlock(&mdev->state_lock);
+ return 0;
+}
+
+static void mlx4_en_free_resources(struct mlx4_en_priv *priv)
+{
+ int i;
+
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ if (priv->tx_ring[i].tx_info)
+ mlx4_en_destroy_tx_ring(priv, &priv->tx_ring[i]);
+ if (priv->tx_cq[i].buf)
+ mlx4_en_destroy_cq(priv, &priv->tx_cq[i]);
+ }
+
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ if (priv->rx_ring[i].rx_info)
+ mlx4_en_destroy_rx_ring(priv, &priv->rx_ring[i]);
+ if (priv->rx_cq[i].buf)
+ mlx4_en_destroy_cq(priv, &priv->rx_cq[i]);
+ }
+}
+
+static int mlx4_en_alloc_resources(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_port_profile *prof = priv->prof;
+ int i;
+
+ /* Create tx Rings */
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ if (mlx4_en_create_cq(priv, &priv->tx_cq[i],
+ prof->tx_ring_size, i, TX))
+ goto err;
+
+ if (mlx4_en_create_tx_ring(priv, &priv->tx_ring[i],
+ prof->tx_ring_size, TXBB_SIZE))
+ goto err;
+ }
+
+ /* Create rx Rings */
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ if (mlx4_en_create_cq(priv, &priv->rx_cq[i],
+ prof->rx_ring_size, i, RX))
+ goto err;
+
+ if (mlx4_en_create_rx_ring(priv, &priv->rx_ring[i],
+ prof->rx_ring_size, priv->stride))
+ goto err;
+ }
+
+ return 0;
+
+err:
+ mlx4_err(mdev, "Failed to allocate NIC resources\n");
+ return -ENOMEM;
+}
+
+
+void mlx4_en_destroy_netdev(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ mlx4_dbg(DRV, priv, "Destroying netdev on port:%d\n", priv->port);
+
+ /* Unregister device - this will close the port if it was up */
+ if (priv->registered)
+ unregister_netdev(dev);
+
+ if (priv->allocated)
+ mlx4_free_hwq_res(mdev->dev, &priv->res, MLX4_EN_PAGE_SIZE);
+
+ cancel_delayed_work(&priv->stats_task);
+ cancel_delayed_work(&priv->refill_task);
+ /* flush any pending task for this netdev */
+ flush_workqueue(mdev->workqueue);
+
+ /* Detach the netdev so tasks would not attempt to access it */
+ mutex_lock(&mdev->state_lock);
+ mdev->pndev[priv->port] = NULL;
+ mutex_unlock(&mdev->state_lock);
+
+ mlx4_en_free_resources(priv);
+ free_netdev(dev);
+}
+
+static int mlx4_en_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err = 0;
+
+ mlx4_dbg(DRV, priv, "Change MTU called - current:%d new:%d\n",
+ dev->mtu, new_mtu);
+
+ if ((new_mtu < MLX4_EN_MIN_MTU) || (new_mtu > priv->max_mtu)) {
+ mlx4_err(mdev, "Bad MTU size:%d.\n", new_mtu);
+ return -EPERM;
+ }
+ dev->mtu = new_mtu;
+
+ if (netif_running(dev)) {
+ mutex_lock(&mdev->state_lock);
+ if (!mdev->device_up) {
+ /* NIC is probably restarting - let watchdog task reset
+ * the port */
+ mlx4_dbg(DRV, priv, "Change MTU called with card down!?\n");
+ } else {
+ mlx4_en_stop_port(dev);
+ mlx4_en_set_default_moderation(priv);
+ err = mlx4_en_start_port(dev);
+ if (err) {
+ mlx4_err(mdev, "Failed restarting port:%d\n",
+ priv->port);
+ queue_work(mdev->workqueue, &priv->watchdog_task);
+ }
+ }
+ mutex_unlock(&mdev->state_lock);
+ }
+ return 0;
+}
+
+int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
+ struct mlx4_en_port_profile *prof)
+{
+ struct net_device *dev;
+ struct mlx4_en_priv *priv;
+ int i;
+ int err;
+
+ dev = alloc_etherdev(sizeof(struct mlx4_en_priv));
+ if (dev == NULL) {
+ mlx4_err(mdev, "Net device allocation failed\n");
+ return -ENOMEM;
+ }
+
+ SET_NETDEV_DEV(dev, &mdev->dev->pdev->dev);
+
+ /*
+ * Initialize driver private data
+ */
+
+ priv = netdev_priv(dev);
+ memset(priv, 0, sizeof(struct mlx4_en_priv));
+ priv->dev = dev;
+ priv->mdev = mdev;
+ priv->prof = prof;
+ priv->port = port;
+ priv->port_up = false;
+ priv->rx_csum = 1;
+ priv->flags = prof->flags;
+ priv->tx_ring_num = prof->tx_ring_num;
+ priv->rx_ring_num = prof->rx_ring_num;
+ priv->mc_list = NULL;
+ priv->mac_index = -1;
+ priv->msg_enable = MLX4_EN_MSG_LEVEL;
+ spin_lock_init(&priv->stats_lock);
+ INIT_WORK(&priv->mcast_task, mlx4_en_do_set_multicast);
+ INIT_WORK(&priv->mac_task, mlx4_en_do_set_mac);
+ INIT_DELAYED_WORK(&priv->refill_task, mlx4_en_rx_refill);
+ INIT_WORK(&priv->watchdog_task, mlx4_en_restart);
+ INIT_WORK(&priv->linkstate_task, mlx4_en_linkstate);
+ INIT_DELAYED_WORK(&priv->stats_task, mlx4_en_do_get_stats);
+
+ /* Query for default mac and max mtu */
+ priv->max_mtu = mdev->dev->caps.eth_mtu_cap[priv->port];
+ priv->mac = mdev->dev->caps.def_mac[priv->port];
+ if (ILLEGAL_MAC(priv->mac)) {
+ mlx4_err(mdev, "Port: %d, invalid mac burned: 0x%llx, quiting\n",
+ priv->port, priv->mac);
+ err = -EINVAL;
+ goto out;
+ }
+
+ priv->stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+ DS_SIZE * MLX4_EN_MAX_RX_FRAGS);
+ err = mlx4_en_alloc_resources(priv);
+ if (err)
+ goto out;
+
+ /* Populate Rx default RSS mappings */
+ mlx4_en_set_default_rss_map(priv, &priv->rss_map, priv->rx_ring_num *
+ RSS_FACTOR, priv->rx_ring_num);
+ /* Allocate page for receive rings */
+ err = mlx4_alloc_hwq_res(mdev->dev, &priv->res,
+ MLX4_EN_PAGE_SIZE, MLX4_EN_PAGE_SIZE);
+ if (err) {
+ mlx4_err(mdev, "Failed to allocate page for rx qps\n");
+ goto out;
+ }
+ priv->allocated = 1;
+
+ /* Populate Tx priority mappings */
+ mlx4_en_set_prio_map(priv, priv->tx_prio_map, prof->tx_ring_num);
+
+ /*
+ * Initialize netdev entry points
+ */
+
+ dev->open = &mlx4_en_open;
+ dev->stop = &mlx4_en_close;
+ dev->hard_start_xmit = &mlx4_en_xmit;
+ dev->get_stats = &mlx4_en_get_stats;
+ dev->set_multicast_list = &mlx4_en_set_multicast;
+ dev->set_mac_address = &mlx4_en_set_mac;
+ dev->change_mtu = &mlx4_en_change_mtu;
+ dev->tx_timeout = &mlx4_en_tx_timeout;
+ dev->watchdog_timeo = MLX4_EN_WATCHDOG_TIMEOUT;
+ dev->vlan_rx_register = mlx4_en_vlan_rx_register;
+ dev->vlan_rx_add_vid = mlx4_en_vlan_rx_add_vid;
+ dev->vlan_rx_kill_vid = mlx4_en_vlan_rx_kill_vid;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = mlx4_en_netpoll;
+#endif
+ SET_ETHTOOL_OPS(dev, &mlx4_en_ethtool_ops);
+
+ /* Set defualt MAC */
+ dev->addr_len = ETH_ALEN;
+ for (i = 0; i < ETH_ALEN; i++)
+ dev->dev_addr[ETH_ALEN - 1 - i] =
+ (u8) (priv->mac >> (8 * i));
+
+ /*
+ * Set driver features
+ */
+ dev->features |= NETIF_F_SG;
+ dev->features |= NETIF_F_HW_CSUM;
+ dev->features |= NETIF_F_HIGHDMA;
+ dev->features |= NETIF_F_HW_VLAN_TX |
+ NETIF_F_HW_VLAN_RX |
+ NETIF_F_HW_VLAN_FILTER;
+ if (mdev->profile.num_lro)
+ dev->features |= NETIF_F_LRO;
+ if (mdev->LSO_support) {
+ dev->features |= NETIF_F_TSO;
+ dev->features |= NETIF_F_TSO6;
+ }
+
+ mdev->pndev[port] = dev;
+
+ netif_carrier_off(dev);
+ err = register_netdev(dev);
+ if (err) {
+ mlx4_err(mdev, "Netdev registration failed\n");
+ goto out;
+ }
+ priv->registered = 1;
+ queue_delayed_work(mdev->workqueue, &priv->stats_task, STATS_DELAY);
+ return 0;
+
+out:
+ mlx4_en_destroy_netdev(dev);
+ return err;
+}
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+
+#include "mlx4_en.h"
+#include "en_port.h"
+
+#define MLX4_EN_PARM_INT(X, def_val, desc) \
+ static unsigned int X = def_val;\
+ module_param(X , uint, 0444); \
+ MODULE_PARM_DESC(X, desc);
+
+
+/*
+ * Device scope module parameters
+ */
+
+
+/* Use a XOR rathern than Toeplitz hash function for RSS */
+MLX4_EN_PARM_INT(rss_xor, 0, "Use XOR hash function for RSS");
+
+/* RSS hash type mask - default to <saddr, daddr, sport, dport> */
+MLX4_EN_PARM_INT(rss_mask, 0xf, "RSS hash type bitmask");
+
+/* Number of LRO sessions per Rx ring (rounded up to a power of two) */
+MLX4_EN_PARM_INT(num_lro, MLX4_EN_MAX_LRO_DESCRIPTORS,
+ "Number of LRO sessions per ring or disabled (0)");
+
+/* Priority pausing */
+MLX4_EN_PARM_INT(pptx, MLX4_EN_DEF_TX_PAUSE,
+ "Pause policy on TX: 0 never generate pause frames "
+ "1 generate pause frames according to RX buffer threshold");
+MLX4_EN_PARM_INT(pprx, MLX4_EN_DEF_RX_PAUSE,
+ "Pause policy on RX: 0 ignore received pause frames "
+ "1 respect received pause frames");
+MLX4_EN_PARM_INT(pfctx, 0, "Priority based Flow Control policy on TX[7:0]."
+ " Per priority bit mask");
+MLX4_EN_PARM_INT(pfcrx, 0, "Priority based Flow Control policy on RX[7:0]."
+ " Per priority bit mask");
+
+/* Interrupt moderation tunning */
+MLX4_EN_PARM_INT(rx_moder_cnt, MLX4_EN_AUTO_CONF,
+ "Max coalesced descriptors for Rx interrupt moderation");
+MLX4_EN_PARM_INT(rx_moder_time, MLX4_EN_AUTO_CONF,
+ "Timeout following last packet for Rx interrupt moderation");
+MLX4_EN_PARM_INT(auto_moder, 1, "Enable dynamic interrupt moderation");
+
+MLX4_EN_PARM_INT(rx_ring_num1, 0, "Number or Rx rings for port 1 (0 = #cores)");
+MLX4_EN_PARM_INT(rx_ring_num2, 0, "Number or Rx rings for port 2 (0 = #cores)");
+
+MLX4_EN_PARM_INT(tx_ring_size1, MLX4_EN_AUTO_CONF, "Tx ring size for port 1");
+MLX4_EN_PARM_INT(tx_ring_size2, MLX4_EN_AUTO_CONF, "Tx ring size for port 2");
+MLX4_EN_PARM_INT(rx_ring_size1, MLX4_EN_AUTO_CONF, "Rx ring size for port 1");
+MLX4_EN_PARM_INT(rx_ring_size2, MLX4_EN_AUTO_CONF, "Rx ring size for port 2");
+
+
+int mlx4_en_get_profile(struct mlx4_en_dev *mdev)
+{
+ struct mlx4_en_profile *params = &mdev->profile;
+
+ params->rx_moder_cnt = min_t(int, rx_moder_cnt, MLX4_EN_AUTO_CONF);
+ params->rx_moder_time = min_t(int, rx_moder_time, MLX4_EN_AUTO_CONF);
+ params->auto_moder = auto_moder;
+ params->rss_xor = (rss_xor != 0);
+ params->rss_mask = rss_mask & 0x1f;
+ params->num_lro = min_t(int, num_lro , MLX4_EN_MAX_LRO_DESCRIPTORS);
+ params->rx_pause = pprx;
+ params->rx_ppp = pfcrx;
+ params->tx_pause = pptx;
+ params->tx_ppp = pfctx;
+ if (params->rx_ppp || params->tx_ppp) {
+ params->prof[1].tx_ring_num = MLX4_EN_TX_RING_NUM;
+ params->prof[2].tx_ring_num = MLX4_EN_TX_RING_NUM;
+ } else {
+ params->prof[1].tx_ring_num = 1;
+ params->prof[2].tx_ring_num = 1;
+ }
+ params->prof[1].rx_ring_num = min_t(int, rx_ring_num1, MAX_RX_RINGS);
+ params->prof[2].rx_ring_num = min_t(int, rx_ring_num2, MAX_RX_RINGS);
+
+ if (tx_ring_size1 == MLX4_EN_AUTO_CONF)
+ tx_ring_size1 = MLX4_EN_DEF_TX_RING_SIZE;
+ params->prof[1].tx_ring_size =
+ (tx_ring_size1 < MLX4_EN_MIN_TX_SIZE) ?
+ MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size1);
+
+ if (tx_ring_size2 == MLX4_EN_AUTO_CONF)
+ tx_ring_size2 = MLX4_EN_DEF_TX_RING_SIZE;
+ params->prof[2].tx_ring_size =
+ (tx_ring_size2 < MLX4_EN_MIN_TX_SIZE) ?
+ MLX4_EN_MIN_TX_SIZE : roundup_pow_of_two(tx_ring_size2);
+
+ if (rx_ring_size1 == MLX4_EN_AUTO_CONF)
+ rx_ring_size1 = MLX4_EN_DEF_RX_RING_SIZE;
+ params->prof[1].rx_ring_size =
+ (rx_ring_size1 < MLX4_EN_MIN_RX_SIZE) ?
+ MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size1);
+
+ if (rx_ring_size2 == MLX4_EN_AUTO_CONF)
+ rx_ring_size2 = MLX4_EN_DEF_RX_RING_SIZE;
+ params->prof[2].rx_ring_size =
+ (rx_ring_size2 < MLX4_EN_MIN_RX_SIZE) ?
+ MLX4_EN_MIN_RX_SIZE : roundup_pow_of_two(rx_ring_size2);
+ return 0;
+}
+
+
+/*
+ * Ethtool support
+ */
+
+static void mlx4_en_update_lro_stats(struct mlx4_en_priv *priv)
+{
+ int i;
+
+ priv->port_stats.lro_aggregated = 0;
+ priv->port_stats.lro_flushed = 0;
+ priv->port_stats.lro_no_desc = 0;
+
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ priv->port_stats.lro_aggregated += priv->rx_ring[i].lro.stats.aggregated;
+ priv->port_stats.lro_flushed += priv->rx_ring[i].lro.stats.flushed;
+ priv->port_stats.lro_no_desc += priv->rx_ring[i].lro.stats.no_desc;
+ }
+}
+
+static void
+mlx4_en_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ sprintf(drvinfo->driver, DRV_NAME " (%s)", mdev->dev->board_id);
+ strncpy(drvinfo->version, DRV_VERSION " (" DRV_RELDATE ")", 32);
+ sprintf(drvinfo->fw_version, "%d.%d.%d",
+ (u16) (mdev->dev->caps.fw_ver >> 32),
+ (u16) ((mdev->dev->caps.fw_ver >> 16) & 0xffff),
+ (u16) (mdev->dev->caps.fw_ver & 0xffff));
+ strncpy(drvinfo->bus_info, pci_name(mdev->dev->pdev), 32);
+ drvinfo->n_stats = 0;
+ drvinfo->regdump_len = 0;
+ drvinfo->eedump_len = 0;
+}
+
+static u32 mlx4_en_get_tso(struct net_device *dev)
+{
+ return (dev->features & NETIF_F_TSO) != 0;
+}
+
+static int mlx4_en_set_tso(struct net_device *dev, u32 data)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ if (data) {
+ if (!priv->mdev->LSO_support)
+ return -EPERM;
+ dev->features |= (NETIF_F_TSO | NETIF_F_TSO6);
+ } else
+ dev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6);
+ return 0;
+}
+
+static u32 mlx4_en_get_rx_csum(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ return priv->rx_csum;
+}
+
+static int mlx4_en_set_rx_csum(struct net_device *dev, u32 data)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ priv->rx_csum = (data != 0);
+ return 0;
+}
+
+static const char main_strings[][ETH_GSTRING_LEN] = {
+ "rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
+ "tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
+ "rx_length_errors", "rx_over_errors", "rx_crc_errors",
+ "rx_frame_errors", "rx_fifo_errors", "rx_missed_errors",
+ "tx_aborted_errors", "tx_carrier_errors", "tx_fifo_errors",
+ "tx_heartbeat_errors", "tx_window_errors",
+
+ /* port statistics */
+ "lro_aggregated", "lro_flushed", "lro_no_desc", "tso_packets",
+ "queue_stopped", "wake_queue", "tx_timeout", "rx_alloc_failed",
+ "rx_csum_good", "rx_csum_none", "tx_chksum_offload",
+
+ /* packet statistics */
+ "broadcast", "rx_prio_0", "rx_prio_1", "rx_prio_2", "rx_prio_3",
+ "rx_prio_4", "rx_prio_5", "rx_prio_6", "rx_prio_7", "tx_prio_0",
+ "tx_prio_1", "tx_prio_2", "tx_prio_3", "tx_prio_4", "tx_prio_5",
+ "tx_prio_6", "tx_prio_7",
+};
+#define NUM_MAIN_STATS 21
+#define NUM_ALL_STATS (NUM_MAIN_STATS + NUM_PORT_STATS + NUM_PKT_STATS + NUM_PERF_STATS)
+
+static u32 mlx4_en_get_msglevel(struct net_device *dev)
+{
+ return ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable;
+}
+
+static void mlx4_en_set_msglevel(struct net_device *dev, u32 val)
+{
+ ((struct mlx4_en_priv *) netdev_priv(dev))->msg_enable = val;
+}
+
+static void mlx4_en_get_wol(struct net_device *netdev,
+ struct ethtool_wolinfo *wol)
+{
+ wol->supported = 0;
+ wol->wolopts = 0;
+
+ return;
+}
+
+static int mlx4_en_get_sset_count(struct net_device *dev, int sset)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ if (sset != ETH_SS_STATS)
+ return -EOPNOTSUPP;
+
+ return NUM_ALL_STATS + (priv->tx_ring_num + priv->rx_ring_num) * 2;
+}
+
+static void mlx4_en_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats, uint64_t *data)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int index = 0;
+ int i;
+
+ spin_lock_bh(&priv->stats_lock);
+
+ mlx4_en_update_lro_stats(priv);
+
+ for (i = 0; i < NUM_MAIN_STATS; i++)
+ data[index++] = ((unsigned long *) &priv->stats)[i];
+ for (i = 0; i < NUM_PORT_STATS; i++)
+ data[index++] = ((unsigned long *) &priv->port_stats)[i];
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ data[index++] = priv->tx_ring[i].packets;
+ data[index++] = priv->tx_ring[i].bytes;
+ }
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ data[index++] = priv->rx_ring[i].packets;
+ data[index++] = priv->rx_ring[i].bytes;
+ }
+ for (i = 0; i < NUM_PKT_STATS; i++)
+ data[index++] = ((unsigned long *) &priv->pkstats)[i];
+ spin_unlock_bh(&priv->stats_lock);
+
+}
+
+static void mlx4_en_get_strings(struct net_device *dev,
+ uint32_t stringset, uint8_t *data)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int index = 0;
+ int i;
+
+ if (stringset != ETH_SS_STATS)
+ return;
+
+ /* Add main counters */
+ for (i = 0; i < NUM_MAIN_STATS; i++)
+ strcpy(data + (index++) * ETH_GSTRING_LEN, main_strings[i]);
+ for (i = 0; i < NUM_PORT_STATS; i++)
+ strcpy(data + (index++) * ETH_GSTRING_LEN,
+ main_strings[i + NUM_MAIN_STATS]);
+ for (i = 0; i < priv->tx_ring_num; i++) {
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "tx%d_packets", i);
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "tx%d_bytes", i);
+ }
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "rx%d_packets", i);
+ sprintf(data + (index++) * ETH_GSTRING_LEN,
+ "rx%d_bytes", i);
+ }
+ for (i = 0; i < NUM_PKT_STATS; i++)
+ strcpy(data + (index++) * ETH_GSTRING_LEN,
+ main_strings[i + NUM_MAIN_STATS + NUM_PORT_STATS]);
+}
+
+static int mlx4_en_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->supported = SUPPORTED_10000baseT_Full;
+ cmd->advertising = SUPPORTED_10000baseT_Full;
+ if (netif_carrier_ok(dev)) {
+ cmd->speed = SPEED_10000;
+ cmd->duplex = DUPLEX_FULL;
+ } else {
+ cmd->speed = -1;
+ cmd->duplex = -1;
+ }
+ return 0;
+}
+
+static int mlx4_en_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ if ((cmd->autoneg == AUTONEG_ENABLE) ||
+ (cmd->speed != SPEED_10000) || (cmd->duplex != DUPLEX_FULL))
+ return -EINVAL;
+
+ /* Nothing to change */
+ return 0;
+}
+
+static int mlx4_en_get_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *coal)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+
+ coal->tx_coalesce_usecs = 0;
+ coal->tx_max_coalesced_frames = 0;
+ coal->rx_coalesce_usecs = priv->rx_usecs;
+ coal->rx_max_coalesced_frames = priv->rx_frames;
+
+ coal->pkt_rate_low = priv->pkt_rate_low;
+ coal->rx_coalesce_usecs_low = priv->rx_usecs_low;
+ coal->pkt_rate_high = priv->pkt_rate_high;
+ coal->rx_coalesce_usecs_high = priv->rx_usecs_high;
+ coal->rate_sample_interval = priv->sample_interval;
+ coal->use_adaptive_rx_coalesce = priv->adaptive_rx_coal;
+ return 0;
+}
+
+static int mlx4_en_set_coalesce(struct net_device *dev,
+ struct ethtool_coalesce *coal)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int err, i;
+
+ priv->rx_frames = (coal->rx_max_coalesced_frames ==
+ MLX4_EN_AUTO_CONF) ?
+ MLX4_EN_RX_COAL_TARGET /
+ priv->dev->mtu + 1 :
+ coal->rx_max_coalesced_frames;
+ priv->rx_usecs = (coal->rx_coalesce_usecs ==
+ MLX4_EN_AUTO_CONF) ?
+ MLX4_EN_RX_COAL_TIME :
+ coal->rx_coalesce_usecs;
+
+ /* Set adaptive coalescing params */
+ priv->pkt_rate_low = coal->pkt_rate_low;
+ priv->rx_usecs_low = coal->rx_coalesce_usecs_low;
+ priv->pkt_rate_high = coal->pkt_rate_high;
+ priv->rx_usecs_high = coal->rx_coalesce_usecs_high;
+ priv->sample_interval = coal->rate_sample_interval;
+ priv->adaptive_rx_coal = coal->use_adaptive_rx_coalesce;
+ priv->last_moder_time = MLX4_EN_AUTO_CONF;
+ if (priv->adaptive_rx_coal)
+ return 0;
+
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ priv->rx_cq[i].moder_cnt = priv->rx_frames;
+ priv->rx_cq[i].moder_time = priv->rx_usecs;
+ err = mlx4_en_set_cq_moder(priv, &priv->rx_cq[i]);
+ if (err)
+ return err;
+ }
+ return 0;
+}
+
+static int mlx4_en_set_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *pause)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ mdev->profile.tx_pause = pause->tx_pause != 0;
+ mdev->profile.rx_pause = pause->rx_pause != 0;
+ err = mlx4_SET_PORT_general(mdev->dev, priv->port,
+ priv->rx_skb_size + ETH_FCS_LEN,
+ mdev->profile.tx_pause,
+ mdev->profile.tx_ppp,
+ mdev->profile.rx_pause,
+ mdev->profile.rx_ppp);
+ if (err)
+ mlx4_err(mdev, "Failed setting pause params to\n");
+
+ return err;
+}
+
+static void mlx4_en_get_pauseparam(struct net_device *dev,
+ struct ethtool_pauseparam *pause)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ pause->tx_pause = mdev->profile.tx_pause;
+ pause->rx_pause = mdev->profile.rx_pause;
+}
+
+static void mlx4_en_get_ringparam(struct net_device *dev,
+ struct ethtool_ringparam *param)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ memset(param, 0, sizeof(*param));
+ param->rx_max_pending = mdev->dev->caps.max_rq_sg;
+ param->tx_max_pending = mdev->dev->caps.max_sq_sg;
+ param->rx_pending = mdev->profile.prof[priv->port].rx_ring_size;
+ param->tx_pending = mdev->profile.prof[priv->port].tx_ring_size;
+}
+
+const struct ethtool_ops mlx4_en_ethtool_ops = {
+ .get_drvinfo = mlx4_en_get_drvinfo,
+ .get_settings = mlx4_en_get_settings,
+ .set_settings = mlx4_en_set_settings,
+#ifdef NETIF_F_TSO
+ .get_tso = mlx4_en_get_tso,
+ .set_tso = mlx4_en_set_tso,
+#endif
+ .get_sg = ethtool_op_get_sg,
+ .set_sg = ethtool_op_set_sg,
+ .get_link = ethtool_op_get_link,
+ .get_rx_csum = mlx4_en_get_rx_csum,
+ .set_rx_csum = mlx4_en_set_rx_csum,
+ .get_tx_csum = ethtool_op_get_tx_csum,
+ .set_tx_csum = ethtool_op_set_tx_ipv6_csum,
+ .get_strings = mlx4_en_get_strings,
+ .get_sset_count = mlx4_en_get_sset_count,
+ .get_ethtool_stats = mlx4_en_get_ethtool_stats,
+ .get_wol = mlx4_en_get_wol,
+ .get_msglevel = mlx4_en_get_msglevel,
+ .set_msglevel = mlx4_en_set_msglevel,
+ .get_coalesce = mlx4_en_get_coalesce,
+ .set_coalesce = mlx4_en_set_coalesce,
+ .get_pauseparam = mlx4_en_get_pauseparam,
+ .set_pauseparam = mlx4_en_set_pauseparam,
+ .get_ringparam = mlx4_en_get_ringparam,
+ .get_flags = ethtool_op_get_flags,
+ .set_flags = ethtool_op_set_flags,
+};
+
+
+
+
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+
+#include <linux/if_vlan.h>
+
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/cmd.h>
+
+#include "en_port.h"
+#include "mlx4_en.h"
+
+
+int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port,
+ u64 mac, u64 clear, u8 mode)
+{
+ return mlx4_cmd(dev, (mac | (clear << 63)), port, mode,
+ MLX4_CMD_SET_MCAST_FLTR, MLX4_CMD_TIME_CLASS_B);
+}
+
+int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, u8 port, struct vlan_group *grp)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ struct mlx4_set_vlan_fltr_mbox *filter;
+ int i;
+ int j;
+ int index = 0;
+ u32 entry;
+ int err = 0;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ filter = mailbox->buf;
+ if (grp) {
+ memset(filter, 0, sizeof *filter);
+ for (i = VLAN_FLTR_SIZE - 1; i >= 0; i--) {
+ entry = 0;
+ for (j = 0; j < 32; j++)
+ if (vlan_group_get_device(grp, index++))
+ entry |= 1 << j;
+ filter->entry[i] = cpu_to_be32(entry);
+ }
+ } else {
+ /* When no vlans are configured we block all vlans */
+ memset(filter, 0, sizeof(*filter));
+ }
+ err = mlx4_cmd(dev, mailbox->dma, port, 0, MLX4_CMD_SET_VLAN_FLTR,
+ MLX4_CMD_TIME_CLASS_B);
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+
+
+int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
+ u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ struct mlx4_set_port_general_context *context;
+ int err;
+ u32 in_mod;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ context = mailbox->buf;
+ memset(context, 0, sizeof *context);
+
+ context->flags = SET_PORT_GEN_ALL_VALID;
+ context->mtu = cpu_to_be16(mtu);
+ context->pptx = (pptx * (!pfctx)) << 7;
+ context->pfctx = pfctx;
+ context->pprx = (pprx * (!pfcrx)) << 7;
+ context->pfcrx = pfcrx;
+
+ in_mod = MLX4_SET_PORT_GENERAL << 8 | port;
+ err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+
+int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
+ u8 promisc)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ struct mlx4_set_port_rqp_calc_context *context;
+ int err;
+ u32 in_mod;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ context = mailbox->buf;
+ memset(context, 0, sizeof *context);
+
+ context->base_qpn = cpu_to_be32(base_qpn);
+ context->promisc = cpu_to_be32(promisc << SET_PORT_PROMISC_SHIFT | base_qpn);
+ context->mcast = cpu_to_be32(1 << SET_PORT_PROMISC_SHIFT | base_qpn);
+ context->intra_no_vlan = 0;
+ context->no_vlan = MLX4_NO_VLAN_IDX;
+ context->intra_vlan_miss = 0;
+ context->vlan_miss = MLX4_VLAN_MISS_IDX;
+
+ in_mod = MLX4_SET_PORT_RQP_CALC << 8 | port;
+ err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+
+
+int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset)
+{
+ struct mlx4_en_stat_out_mbox *mlx4_en_stats;
+ struct mlx4_en_priv *priv = netdev_priv(mdev->pndev[port]);
+ struct net_device_stats *stats = &priv->stats;
+ struct mlx4_cmd_mailbox *mailbox;
+ u64 in_mod = reset << 8 | port;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(mdev->dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+ memset(mailbox->buf, 0, sizeof(*mlx4_en_stats));
+ err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, in_mod, 0,
+ MLX4_CMD_DUMP_ETH_STATS, MLX4_CMD_TIME_CLASS_B);
+ if (err)
+ goto out;
+
+ mlx4_en_stats = mailbox->buf;
+
+ spin_lock_bh(&priv->stats_lock);
+
+ stats->rx_packets = be32_to_cpu(mlx4_en_stats->RTOTFRMS) -
+ be32_to_cpu(mlx4_en_stats->RDROP);
+ stats->tx_packets = be64_to_cpu(mlx4_en_stats->TTOT_prio_0) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_1) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_2) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_3) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_4) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_5) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_6) +
+ be64_to_cpu(mlx4_en_stats->TTOT_prio_7) +
+ be64_to_cpu(mlx4_en_stats->TTOT_novlan) +
+ be64_to_cpu(mlx4_en_stats->TTOT_loopbk);
+ stats->rx_bytes = be64_to_cpu(mlx4_en_stats->ROCT_prio_0) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_1) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_2) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_3) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_4) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_5) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_6) +
+ be64_to_cpu(mlx4_en_stats->ROCT_prio_7) +
+ be64_to_cpu(mlx4_en_stats->ROCT_novlan);
+
+ stats->tx_bytes = be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_0) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_1) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_2) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_3) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_4) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_5) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_6) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_prio_7) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_novlan) +
+ be64_to_cpu(mlx4_en_stats->TTTLOCT_loopbk);
+
+ stats->rx_errors = be64_to_cpu(mlx4_en_stats->PCS) +
+ be32_to_cpu(mlx4_en_stats->RdropLength) +
+ be32_to_cpu(mlx4_en_stats->RJBBR) +
+ be32_to_cpu(mlx4_en_stats->RCRC) +
+ be32_to_cpu(mlx4_en_stats->RRUNT);
+ stats->tx_errors = be32_to_cpu(mlx4_en_stats->TDROP);
+ stats->multicast = be64_to_cpu(mlx4_en_stats->MCAST_prio_0) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_1) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_2) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_3) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_4) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_5) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_6) +
+ be64_to_cpu(mlx4_en_stats->MCAST_prio_7) +
+ be64_to_cpu(mlx4_en_stats->MCAST_novlan);
+ stats->collisions = 0;
+ stats->rx_length_errors = be32_to_cpu(mlx4_en_stats->RdropLength);
+ stats->rx_over_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+ stats->rx_crc_errors = be32_to_cpu(mlx4_en_stats->RCRC);
+ stats->rx_frame_errors = 0;
+ stats->rx_fifo_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+ stats->rx_missed_errors = be32_to_cpu(mlx4_en_stats->RdropOvflw);
+ stats->tx_aborted_errors = 0;
+ stats->tx_carrier_errors = 0;
+ stats->tx_fifo_errors = 0;
+ stats->tx_heartbeat_errors = 0;
+ stats->tx_window_errors = 0;
+
+ priv->pkstats.broadcast =
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_0) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_1) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_2) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_3) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_4) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_5) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_6) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_prio_7) +
+ be64_to_cpu(mlx4_en_stats->RBCAST_novlan);
+ priv->pkstats.rx_prio[0] = be64_to_cpu(mlx4_en_stats->RTOT_prio_0);
+ priv->pkstats.rx_prio[1] = be64_to_cpu(mlx4_en_stats->RTOT_prio_1);
+ priv->pkstats.rx_prio[2] = be64_to_cpu(mlx4_en_stats->RTOT_prio_2);
+ priv->pkstats.rx_prio[3] = be64_to_cpu(mlx4_en_stats->RTOT_prio_3);
+ priv->pkstats.rx_prio[4] = be64_to_cpu(mlx4_en_stats->RTOT_prio_4);
+ priv->pkstats.rx_prio[5] = be64_to_cpu(mlx4_en_stats->RTOT_prio_5);
+ priv->pkstats.rx_prio[6] = be64_to_cpu(mlx4_en_stats->RTOT_prio_6);
+ priv->pkstats.rx_prio[7] = be64_to_cpu(mlx4_en_stats->RTOT_prio_7);
+ priv->pkstats.tx_prio[0] = be64_to_cpu(mlx4_en_stats->TTOT_prio_0);
+ priv->pkstats.tx_prio[1] = be64_to_cpu(mlx4_en_stats->TTOT_prio_1);
+ priv->pkstats.tx_prio[2] = be64_to_cpu(mlx4_en_stats->TTOT_prio_2);
+ priv->pkstats.tx_prio[3] = be64_to_cpu(mlx4_en_stats->TTOT_prio_3);
+ priv->pkstats.tx_prio[4] = be64_to_cpu(mlx4_en_stats->TTOT_prio_4);
+ priv->pkstats.tx_prio[5] = be64_to_cpu(mlx4_en_stats->TTOT_prio_5);
+ priv->pkstats.tx_prio[6] = be64_to_cpu(mlx4_en_stats->TTOT_prio_6);
+ priv->pkstats.tx_prio[7] = be64_to_cpu(mlx4_en_stats->TTOT_prio_7);
+ spin_unlock_bh(&priv->stats_lock);
+
+out:
+ mlx4_free_cmd_mailbox(mdev->dev, mailbox);
+ return err;
+}
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef _MLX4_EN_PORT_H_
+#define _MLX4_EN_PORT_H_
+
+
+#define SET_PORT_GEN_ALL_VALID 0x7
+#define SET_PORT_PROMISC_SHIFT 31
+
+enum {
+ MLX4_CMD_SET_VLAN_FLTR = 0x47,
+ MLX4_CMD_SET_MCAST_FLTR = 0x48,
+ MLX4_CMD_DUMP_ETH_STATS = 0x49,
+};
+
+struct mlx4_set_port_general_context {
+ u8 reserved[3];
+ u8 flags;
+ u16 reserved2;
+ __be16 mtu;
+ u8 pptx;
+ u8 pfctx;
+ u16 reserved3;
+ u8 pprx;
+ u8 pfcrx;
+ u16 reserved4;
+};
+
+struct mlx4_set_port_rqp_calc_context {
+ __be32 base_qpn;
+ __be32 flags;
+ u8 reserved[3];
+ u8 mac_miss;
+ u8 intra_no_vlan;
+ u8 no_vlan;
+ u8 intra_vlan_miss;
+ u8 vlan_miss;
+ u8 reserved2[3];
+ u8 no_vlan_prio;
+ __be32 promisc;
+ __be32 mcast;
+};
+
+#define VLAN_FLTR_SIZE 128
+struct mlx4_set_vlan_fltr_mbox {
+ __be32 entry[VLAN_FLTR_SIZE];
+};
+
+
+enum {
+ MLX4_MCAST_CONFIG = 0,
+ MLX4_MCAST_DISABLE = 1,
+ MLX4_MCAST_ENABLE = 2,
+};
+
+
+struct mlx4_en_stat_out_mbox {
+ /* Received frames with a length of 64 octets */
+ __be64 R64_prio_0;
+ __be64 R64_prio_1;
+ __be64 R64_prio_2;
+ __be64 R64_prio_3;
+ __be64 R64_prio_4;
+ __be64 R64_prio_5;
+ __be64 R64_prio_6;
+ __be64 R64_prio_7;
+ __be64 R64_novlan;
+ /* Received frames with a length of 127 octets */
+ __be64 R127_prio_0;
+ __be64 R127_prio_1;
+ __be64 R127_prio_2;
+ __be64 R127_prio_3;
+ __be64 R127_prio_4;
+ __be64 R127_prio_5;
+ __be64 R127_prio_6;
+ __be64 R127_prio_7;
+ __be64 R127_novlan;
+ /* Received frames with a length of 255 octets */
+ __be64 R255_prio_0;
+ __be64 R255_prio_1;
+ __be64 R255_prio_2;
+ __be64 R255_prio_3;
+ __be64 R255_prio_4;
+ __be64 R255_prio_5;
+ __be64 R255_prio_6;
+ __be64 R255_prio_7;
+ __be64 R255_novlan;
+ /* Received frames with a length of 511 octets */
+ __be64 R511_prio_0;
+ __be64 R511_prio_1;
+ __be64 R511_prio_2;
+ __be64 R511_prio_3;
+ __be64 R511_prio_4;
+ __be64 R511_prio_5;
+ __be64 R511_prio_6;
+ __be64 R511_prio_7;
+ __be64 R511_novlan;
+ /* Received frames with a length of 1023 octets */
+ __be64 R1023_prio_0;
+ __be64 R1023_prio_1;
+ __be64 R1023_prio_2;
+ __be64 R1023_prio_3;
+ __be64 R1023_prio_4;
+ __be64 R1023_prio_5;
+ __be64 R1023_prio_6;
+ __be64 R1023_prio_7;
+ __be64 R1023_novlan;
+ /* Received frames with a length of 1518 octets */
+ __be64 R1518_prio_0;
+ __be64 R1518_prio_1;
+ __be64 R1518_prio_2;
+ __be64 R1518_prio_3;
+ __be64 R1518_prio_4;
+ __be64 R1518_prio_5;
+ __be64 R1518_prio_6;
+ __be64 R1518_prio_7;
+ __be64 R1518_novlan;
+ /* Received frames with a length of 1522 octets */
+ __be64 R1522_prio_0;
+ __be64 R1522_prio_1;
+ __be64 R1522_prio_2;
+ __be64 R1522_prio_3;
+ __be64 R1522_prio_4;
+ __be64 R1522_prio_5;
+ __be64 R1522_prio_6;
+ __be64 R1522_prio_7;
+ __be64 R1522_novlan;
+ /* Received frames with a length of 1548 octets */
+ __be64 R1548_prio_0;
+ __be64 R1548_prio_1;
+ __be64 R1548_prio_2;
+ __be64 R1548_prio_3;
+ __be64 R1548_prio_4;
+ __be64 R1548_prio_5;
+ __be64 R1548_prio_6;
+ __be64 R1548_prio_7;
+ __be64 R1548_novlan;
+ /* Received frames with a length of 1548 < octets < MTU */
+ __be64 R2MTU_prio_0;
+ __be64 R2MTU_prio_1;
+ __be64 R2MTU_prio_2;
+ __be64 R2MTU_prio_3;
+ __be64 R2MTU_prio_4;
+ __be64 R2MTU_prio_5;
+ __be64 R2MTU_prio_6;
+ __be64 R2MTU_prio_7;
+ __be64 R2MTU_novlan;
+ /* Received frames with a length of MTU< octets and good CRC */
+ __be64 RGIANT_prio_0;
+ __be64 RGIANT_prio_1;
+ __be64 RGIANT_prio_2;
+ __be64 RGIANT_prio_3;
+ __be64 RGIANT_prio_4;
+ __be64 RGIANT_prio_5;
+ __be64 RGIANT_prio_6;
+ __be64 RGIANT_prio_7;
+ __be64 RGIANT_novlan;
+ /* Received broadcast frames with good CRC */
+ __be64 RBCAST_prio_0;
+ __be64 RBCAST_prio_1;
+ __be64 RBCAST_prio_2;
+ __be64 RBCAST_prio_3;
+ __be64 RBCAST_prio_4;
+ __be64 RBCAST_prio_5;
+ __be64 RBCAST_prio_6;
+ __be64 RBCAST_prio_7;
+ __be64 RBCAST_novlan;
+ /* Received multicast frames with good CRC */
+ __be64 MCAST_prio_0;
+ __be64 MCAST_prio_1;
+ __be64 MCAST_prio_2;
+ __be64 MCAST_prio_3;
+ __be64 MCAST_prio_4;
+ __be64 MCAST_prio_5;
+ __be64 MCAST_prio_6;
+ __be64 MCAST_prio_7;
+ __be64 MCAST_novlan;
+ /* Received unicast not short or GIANT frames with good CRC */
+ __be64 RTOTG_prio_0;
+ __be64 RTOTG_prio_1;
+ __be64 RTOTG_prio_2;
+ __be64 RTOTG_prio_3;
+ __be64 RTOTG_prio_4;
+ __be64 RTOTG_prio_5;
+ __be64 RTOTG_prio_6;
+ __be64 RTOTG_prio_7;
+ __be64 RTOTG_novlan;
+
+ /* Count of total octets of received frames, includes framing characters */
+ __be64 RTTLOCT_prio_0;
+ /* Count of total octets of received frames, not including framing
+ characters */
+ __be64 RTTLOCT_NOFRM_prio_0;
+ /* Count of Total number of octets received
+ (only for frames without errors) */
+ __be64 ROCT_prio_0;
+
+ __be64 RTTLOCT_prio_1;
+ __be64 RTTLOCT_NOFRM_prio_1;
+ __be64 ROCT_prio_1;
+
+ __be64 RTTLOCT_prio_2;
+ __be64 RTTLOCT_NOFRM_prio_2;
+ __be64 ROCT_prio_2;
+
+ __be64 RTTLOCT_prio_3;
+ __be64 RTTLOCT_NOFRM_prio_3;
+ __be64 ROCT_prio_3;
+
+ __be64 RTTLOCT_prio_4;
+ __be64 RTTLOCT_NOFRM_prio_4;
+ __be64 ROCT_prio_4;
+
+ __be64 RTTLOCT_prio_5;
+ __be64 RTTLOCT_NOFRM_prio_5;
+ __be64 ROCT_prio_5;
+
+ __be64 RTTLOCT_prio_6;
+ __be64 RTTLOCT_NOFRM_prio_6;
+ __be64 ROCT_prio_6;
+
+ __be64 RTTLOCT_prio_7;
+ __be64 RTTLOCT_NOFRM_prio_7;
+ __be64 ROCT_prio_7;
+
+ __be64 RTTLOCT_novlan;
+ __be64 RTTLOCT_NOFRM_novlan;
+ __be64 ROCT_novlan;
+
+ /* Count of Total received frames including bad frames */
+ __be64 RTOT_prio_0;
+ /* Count of Total number of received frames with 802.1Q encapsulation */
+ __be64 R1Q_prio_0;
+ __be64 reserved1;
+
+ __be64 RTOT_prio_1;
+ __be64 R1Q_prio_1;
+ __be64 reserved2;
+
+ __be64 RTOT_prio_2;
+ __be64 R1Q_prio_2;
+ __be64 reserved3;
+
+ __be64 RTOT_prio_3;
+ __be64 R1Q_prio_3;
+ __be64 reserved4;
+
+ __be64 RTOT_prio_4;
+ __be64 R1Q_prio_4;
+ __be64 reserved5;
+
+ __be64 RTOT_prio_5;
+ __be64 R1Q_prio_5;
+ __be64 reserved6;
+
+ __be64 RTOT_prio_6;
+ __be64 R1Q_prio_6;
+ __be64 reserved7;
+
+ __be64 RTOT_prio_7;
+ __be64 R1Q_prio_7;
+ __be64 reserved8;
+
+ __be64 RTOT_novlan;
+ __be64 R1Q_novlan;
+ __be64 reserved9;
+
+ /* Total number of Successfully Received Control Frames */
+ __be64 RCNTL;
+ __be64 reserved10;
+ __be64 reserved11;
+ __be64 reserved12;
+ /* Count of received frames with a length/type field value between 46
+ (42 for VLANtagged frames) and 1500 (also 1500 for VLAN-tagged frames),
+ inclusive */
+ __be64 RInRangeLengthErr;
+ /* Count of received frames with length/type field between 1501 and 1535
+ decimal, inclusive */
+ __be64 ROutRangeLengthErr;
+ /* Count of received frames that are longer than max allowed size for
+ 802.3 frames (1518/1522) */
+ __be64 RFrmTooLong;
+ /* Count frames received with PCS error */
+ __be64 PCS;
+
+ /* Transmit frames with a length of 64 octets */
+ __be64 T64_prio_0;
+ __be64 T64_prio_1;
+ __be64 T64_prio_2;
+ __be64 T64_prio_3;
+ __be64 T64_prio_4;
+ __be64 T64_prio_5;
+ __be64 T64_prio_6;
+ __be64 T64_prio_7;
+ __be64 T64_novlan;
+ __be64 T64_loopbk;
+ /* Transmit frames with a length of 65 to 127 octets. */
+ __be64 T127_prio_0;
+ __be64 T127_prio_1;
+ __be64 T127_prio_2;
+ __be64 T127_prio_3;
+ __be64 T127_prio_4;
+ __be64 T127_prio_5;
+ __be64 T127_prio_6;
+ __be64 T127_prio_7;
+ __be64 T127_novlan;
+ __be64 T127_loopbk;
+ /* Transmit frames with a length of 128 to 255 octets */
+ __be64 T255_prio_0;
+ __be64 T255_prio_1;
+ __be64 T255_prio_2;
+ __be64 T255_prio_3;
+ __be64 T255_prio_4;
+ __be64 T255_prio_5;
+ __be64 T255_prio_6;
+ __be64 T255_prio_7;
+ __be64 T255_novlan;
+ __be64 T255_loopbk;
+ /* Transmit frames with a length of 256 to 511 octets */
+ __be64 T511_prio_0;
+ __be64 T511_prio_1;
+ __be64 T511_prio_2;
+ __be64 T511_prio_3;
+ __be64 T511_prio_4;
+ __be64 T511_prio_5;
+ __be64 T511_prio_6;
+ __be64 T511_prio_7;
+ __be64 T511_novlan;
+ __be64 T511_loopbk;
+ /* Transmit frames with a length of 512 to 1023 octets */
+ __be64 T1023_prio_0;
+ __be64 T1023_prio_1;
+ __be64 T1023_prio_2;
+ __be64 T1023_prio_3;
+ __be64 T1023_prio_4;
+ __be64 T1023_prio_5;
+ __be64 T1023_prio_6;
+ __be64 T1023_prio_7;
+ __be64 T1023_novlan;
+ __be64 T1023_loopbk;
+ /* Transmit frames with a length of 1024 to 1518 octets */
+ __be64 T1518_prio_0;
+ __be64 T1518_prio_1;
+ __be64 T1518_prio_2;
+ __be64 T1518_prio_3;
+ __be64 T1518_prio_4;
+ __be64 T1518_prio_5;
+ __be64 T1518_prio_6;
+ __be64 T1518_prio_7;
+ __be64 T1518_novlan;
+ __be64 T1518_loopbk;
+ /* Counts transmit frames with a length of 1519 to 1522 bytes */
+ __be64 T1522_prio_0;
+ __be64 T1522_prio_1;
+ __be64 T1522_prio_2;
+ __be64 T1522_prio_3;
+ __be64 T1522_prio_4;
+ __be64 T1522_prio_5;
+ __be64 T1522_prio_6;
+ __be64 T1522_prio_7;
+ __be64 T1522_novlan;
+ __be64 T1522_loopbk;
+ /* Transmit frames with a length of 1523 to 1548 octets */
+ __be64 T1548_prio_0;
+ __be64 T1548_prio_1;
+ __be64 T1548_prio_2;
+ __be64 T1548_prio_3;
+ __be64 T1548_prio_4;
+ __be64 T1548_prio_5;
+ __be64 T1548_prio_6;
+ __be64 T1548_prio_7;
+ __be64 T1548_novlan;
+ __be64 T1548_loopbk;
+ /* Counts transmit frames with a length of 1549 to MTU bytes */
+ __be64 T2MTU_prio_0;
+ __be64 T2MTU_prio_1;
+ __be64 T2MTU_prio_2;
+ __be64 T2MTU_prio_3;
+ __be64 T2MTU_prio_4;
+ __be64 T2MTU_prio_5;
+ __be64 T2MTU_prio_6;
+ __be64 T2MTU_prio_7;
+ __be64 T2MTU_novlan;
+ __be64 T2MTU_loopbk;
+ /* Transmit frames with a length greater than MTU octets and a good CRC. */
+ __be64 TGIANT_prio_0;
+ __be64 TGIANT_prio_1;
+ __be64 TGIANT_prio_2;
+ __be64 TGIANT_prio_3;
+ __be64 TGIANT_prio_4;
+ __be64 TGIANT_prio_5;
+ __be64 TGIANT_prio_6;
+ __be64 TGIANT_prio_7;
+ __be64 TGIANT_novlan;
+ __be64 TGIANT_loopbk;
+ /* Transmit broadcast frames with a good CRC */
+ __be64 TBCAST_prio_0;
+ __be64 TBCAST_prio_1;
+ __be64 TBCAST_prio_2;
+ __be64 TBCAST_prio_3;
+ __be64 TBCAST_prio_4;
+ __be64 TBCAST_prio_5;
+ __be64 TBCAST_prio_6;
+ __be64 TBCAST_prio_7;
+ __be64 TBCAST_novlan;
+ __be64 TBCAST_loopbk;
+ /* Transmit multicast frames with a good CRC */
+ __be64 TMCAST_prio_0;
+ __be64 TMCAST_prio_1;
+ __be64 TMCAST_prio_2;
+ __be64 TMCAST_prio_3;
+ __be64 TMCAST_prio_4;
+ __be64 TMCAST_prio_5;
+ __be64 TMCAST_prio_6;
+ __be64 TMCAST_prio_7;
+ __be64 TMCAST_novlan;
+ __be64 TMCAST_loopbk;
+ /* Transmit good frames that are neither broadcast nor multicast */
+ __be64 TTOTG_prio_0;
+ __be64 TTOTG_prio_1;
+ __be64 TTOTG_prio_2;
+ __be64 TTOTG_prio_3;
+ __be64 TTOTG_prio_4;
+ __be64 TTOTG_prio_5;
+ __be64 TTOTG_prio_6;
+ __be64 TTOTG_prio_7;
+ __be64 TTOTG_novlan;
+ __be64 TTOTG_loopbk;
+
+ /* total octets of transmitted frames, including framing characters */
+ __be64 TTTLOCT_prio_0;
+ /* total octets of transmitted frames, not including framing characters */
+ __be64 TTTLOCT_NOFRM_prio_0;
+ /* ifOutOctets */
+ __be64 TOCT_prio_0;
+
+ __be64 TTTLOCT_prio_1;
+ __be64 TTTLOCT_NOFRM_prio_1;
+ __be64 TOCT_prio_1;
+
+ __be64 TTTLOCT_prio_2;
+ __be64 TTTLOCT_NOFRM_prio_2;
+ __be64 TOCT_prio_2;
+
+ __be64 TTTLOCT_prio_3;
+ __be64 TTTLOCT_NOFRM_prio_3;
+ __be64 TOCT_prio_3;
+
+ __be64 TTTLOCT_prio_4;
+ __be64 TTTLOCT_NOFRM_prio_4;
+ __be64 TOCT_prio_4;
+
+ __be64 TTTLOCT_prio_5;
+ __be64 TTTLOCT_NOFRM_prio_5;
+ __be64 TOCT_prio_5;
+
+ __be64 TTTLOCT_prio_6;
+ __be64 TTTLOCT_NOFRM_prio_6;
+ __be64 TOCT_prio_6;
+
+ __be64 TTTLOCT_prio_7;
+ __be64 TTTLOCT_NOFRM_prio_7;
+ __be64 TOCT_prio_7;
+
+ __be64 TTTLOCT_novlan;
+ __be64 TTTLOCT_NOFRM_novlan;
+ __be64 TOCT_novlan;
+
+ __be64 TTTLOCT_loopbk;
+ __be64 TTTLOCT_NOFRM_loopbk;
+ __be64 TOCT_loopbk;
+
+ /* Total frames transmitted with a good CRC that are not aborted */
+ __be64 TTOT_prio_0;
+ /* Total number of frames transmitted with 802.1Q encapsulation */
+ __be64 T1Q_prio_0;
+ __be64 reserved13;
+
+ __be64 TTOT_prio_1;
+ __be64 T1Q_prio_1;
+ __be64 reserved14;
+
+ __be64 TTOT_prio_2;
+ __be64 T1Q_prio_2;
+ __be64 reserved15;
+
+ __be64 TTOT_prio_3;
+ __be64 T1Q_prio_3;
+ __be64 reserved16;
+
+ __be64 TTOT_prio_4;
+ __be64 T1Q_prio_4;
+ __be64 reserved17;
+
+ __be64 TTOT_prio_5;
+ __be64 T1Q_prio_5;
+ __be64 reserved18;
+
+ __be64 TTOT_prio_6;
+ __be64 T1Q_prio_6;
+ __be64 reserved19;
+
+ __be64 TTOT_prio_7;
+ __be64 T1Q_prio_7;
+ __be64 reserved20;
+
+ __be64 TTOT_novlan;
+ __be64 T1Q_novlan;
+ __be64 reserved21;
+
+ __be64 TTOT_loopbk;
+ __be64 T1Q_loopbk;
+ __be64 reserved22;
+
+ /* Received frames with a length greater than MTU octets and a bad CRC */
+ __be32 RJBBR;
+ /* Received frames with a bad CRC that are not runts, jabbers,
+ or alignment errors */
+ __be32 RCRC;
+ /* Received frames with SFD with a length of less than 64 octets and a
+ bad CRC */
+ __be32 RRUNT;
+ /* Received frames with a length less than 64 octets and a good CRC */
+ __be32 RSHORT;
+ /* Total Number of Received Packets Dropped */
+ __be32 RDROP;
+ /* Drop due to overflow */
+ __be32 RdropOvflw;
+ /* Drop due to overflow */
+ __be32 RdropLength;
+ /* Total of good frames. Does not include frames received with
+ frame-too-long, FCS, or length errors */
+ __be32 RTOTFRMS;
+ /* Total dropped Xmited packets */
+ __be32 TDROP;
+};
+
+
+#endif
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/vmalloc.h>
+#include <linux/mlx4/qp.h>
+
+#include "mlx4_en.h"
+
+void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
+ int is_tx, int rss, int qpn, int cqn, int srqn,
+ struct mlx4_qp_context *context)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ memset(context, 0, sizeof *context);
+ context->flags = cpu_to_be32(7 << 16 | rss << 13);
+ context->pd = cpu_to_be32(mdev->priv_pdn);
+ context->mtu_msgmax = 0xff;
+ context->rq_size_stride = 0;
+ if (is_tx)
+ context->sq_size_stride = ilog2(size) << 3 | (ilog2(stride) - 4);
+ else
+ context->sq_size_stride = 1;
+ context->usr_page = cpu_to_be32(mdev->priv_uar.index);
+ context->local_qpn = cpu_to_be32(qpn);
+ context->pri_path.ackto = 1 & 0x07;
+ context->pri_path.sched_queue = 0x83 | (priv->port - 1) << 6;
+ context->pri_path.counter_index = 0xff;
+ context->cqn_send = cpu_to_be32(cqn);
+ context->cqn_recv = cpu_to_be32(cqn);
+ context->db_rec_addr = cpu_to_be64(priv->res.db.dma << 2);
+ if (!rss)
+ context->srqn = cpu_to_be32(MLX4_EN_USE_SRQ | srqn);
+}
+
+
+int mlx4_en_map_buffer(struct mlx4_buf *buf)
+{
+ struct page **pages;
+ int i;
+
+ if (BITS_PER_LONG == 64 || buf->nbufs == 1)
+ return 0;
+
+ pages = kmalloc(sizeof *pages * buf->nbufs, GFP_KERNEL);
+ if (!pages)
+ return -ENOMEM;
+
+ for (i = 0; i < buf->nbufs; ++i)
+ pages[i] = virt_to_page(buf->page_list[i].buf);
+
+ buf->direct.buf = vmap(pages, buf->nbufs, VM_MAP, PAGE_KERNEL);
+ kfree(pages);
+ if (!buf->direct.buf)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void mlx4_en_unmap_buffer(struct mlx4_buf *buf)
+{
+ if (BITS_PER_LONG == 64 || buf->nbufs == 1)
+ return;
+
+ vunmap(buf->direct.buf);
+}
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/skbuff.h>
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
+#include <linux/vmalloc.h>
+
+#include "mlx4_en.h"
+
+static void *get_wqe(struct mlx4_en_rx_ring *ring, int n)
+{
+ int offset = n << ring->srq.wqe_shift;
+ return ring->buf + offset;
+}
+
+static void mlx4_en_srq_event(struct mlx4_srq *srq, enum mlx4_event type)
+{
+ return;
+}
+
+static int mlx4_en_get_frag_header(struct skb_frag_struct *frags, void **mac_hdr,
+ void **ip_hdr, void **tcpudp_hdr,
+ u64 *hdr_flags, void *priv)
+{
+ *mac_hdr = page_address(frags->page) + frags->page_offset;
+ *ip_hdr = *mac_hdr + ETH_HLEN;
+ *tcpudp_hdr = (struct tcphdr *)(*ip_hdr + sizeof(struct iphdr));
+ *hdr_flags = LRO_IPV4 | LRO_TCP;
+
+ return 0;
+}
+
+static int mlx4_en_alloc_frag(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_desc *rx_desc,
+ struct skb_frag_struct *skb_frags,
+ struct mlx4_en_rx_alloc *ring_alloc,
+ int i)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_frag_info *frag_info = &priv->frag_info[i];
+ struct mlx4_en_rx_alloc *page_alloc = &ring_alloc[i];
+ struct page *page;
+ dma_addr_t dma;
+
+ if (page_alloc->offset == frag_info->last_offset) {
+ /* Allocate new page */
+ page = alloc_pages(GFP_ATOMIC | __GFP_COMP, MLX4_EN_ALLOC_ORDER);
+ if (!page)
+ return -ENOMEM;
+
+ skb_frags[i].page = page_alloc->page;
+ skb_frags[i].page_offset = page_alloc->offset;
+ page_alloc->page = page;
+ page_alloc->offset = frag_info->frag_align;
+ } else {
+ page = page_alloc->page;
+ get_page(page);
+
+ skb_frags[i].page = page;
+ skb_frags[i].page_offset = page_alloc->offset;
+ page_alloc->offset += frag_info->frag_stride;
+ }
+ dma = pci_map_single(mdev->pdev, page_address(skb_frags[i].page) +
+ skb_frags[i].page_offset, frag_info->frag_size,
+ PCI_DMA_FROMDEVICE);
+ rx_desc->data[i].addr = cpu_to_be64(dma);
+ return 0;
+}
+
+static int mlx4_en_init_allocator(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_rx_alloc *page_alloc;
+ int i;
+
+ for (i = 0; i < priv->num_frags; i++) {
+ page_alloc = &ring->page_alloc[i];
+ page_alloc->page = alloc_pages(GFP_ATOMIC | __GFP_COMP,
+ MLX4_EN_ALLOC_ORDER);
+ if (!page_alloc->page)
+ goto out;
+
+ page_alloc->offset = priv->frag_info[i].frag_align;
+ mlx4_dbg(DRV, priv, "Initialized allocator:%d with page:%p\n",
+ i, page_alloc->page);
+ }
+ return 0;
+
+out:
+ while (i--) {
+ page_alloc = &ring->page_alloc[i];
+ put_page(page_alloc->page);
+ page_alloc->page = NULL;
+ }
+ return -ENOMEM;
+}
+
+static void mlx4_en_destroy_allocator(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_rx_alloc *page_alloc;
+ int i;
+
+ for (i = 0; i < priv->num_frags; i++) {
+ page_alloc = &ring->page_alloc[i];
+ mlx4_dbg(DRV, priv, "Freeing allocator:%d count:%d\n",
+ i, page_count(page_alloc->page));
+
+ put_page(page_alloc->page);
+ page_alloc->page = NULL;
+ }
+}
+
+
+static void mlx4_en_init_rx_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring, int index)
+{
+ struct mlx4_en_rx_desc *rx_desc = ring->buf + ring->stride * index;
+ struct skb_frag_struct *skb_frags = ring->rx_info +
+ (index << priv->log_rx_info);
+ int possible_frags;
+ int i;
+
+ /* Pre-link descriptor */
+ rx_desc->next.next_wqe_index = cpu_to_be16((index + 1) & ring->size_mask);
+
+ /* Set size and memtype fields */
+ for (i = 0; i < priv->num_frags; i++) {
+ skb_frags[i].size = priv->frag_info[i].frag_size;
+ rx_desc->data[i].byte_count =
+ cpu_to_be32(priv->frag_info[i].frag_size);
+ rx_desc->data[i].lkey = cpu_to_be32(priv->mdev->mr.key);
+ }
+
+ /* If the number of used fragments does not fill up the ring stride,
+ * remaining (unused) fragments must be padded with null address/size
+ * and a special memory key */
+ possible_frags = (ring->stride - sizeof(struct mlx4_en_rx_desc)) / DS_SIZE;
+ for (i = priv->num_frags; i < possible_frags; i++) {
+ rx_desc->data[i].byte_count = 0;
+ rx_desc->data[i].lkey = cpu_to_be32(MLX4_EN_MEMTYPE_PAD);
+ rx_desc->data[i].addr = 0;
+ }
+}
+
+
+static int mlx4_en_prepare_rx_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring, int index)
+{
+ struct mlx4_en_rx_desc *rx_desc = ring->buf + (index * ring->stride);
+ struct skb_frag_struct *skb_frags = ring->rx_info +
+ (index << priv->log_rx_info);
+ int i;
+
+ for (i = 0; i < priv->num_frags; i++)
+ if (mlx4_en_alloc_frag(priv, rx_desc, skb_frags, ring->page_alloc, i))
+ goto err;
+
+ return 0;
+
+err:
+ while (i--)
+ put_page(skb_frags[i].page);
+ return -ENOMEM;
+}
+
+static inline void mlx4_en_update_rx_prod_db(struct mlx4_en_rx_ring *ring)
+{
+ *ring->wqres.db.db = cpu_to_be32(ring->prod & 0xffff);
+}
+
+static int mlx4_en_fill_rx_buffers(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_rx_ring *ring;
+ int ring_ind;
+ int buf_ind;
+
+ for (buf_ind = 0; buf_ind < priv->prof->rx_ring_size; buf_ind++) {
+ for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+ ring = &priv->rx_ring[ring_ind];
+
+ if (mlx4_en_prepare_rx_desc(priv, ring,
+ ring->actual_size)) {
+ if (ring->actual_size < MLX4_EN_MIN_RX_SIZE) {
+ mlx4_err(mdev, "Failed to allocate "
+ "enough rx buffers\n");
+ return -ENOMEM;
+ } else {
+ if (netif_msg_rx_err(priv))
+ mlx4_warn(mdev,
+ "Only %d buffers allocated\n",
+ ring->actual_size);
+ goto out;
+ }
+ }
+ ring->actual_size++;
+ ring->prod++;
+ }
+ }
+out:
+ return 0;
+}
+
+static int mlx4_en_fill_rx_buf(struct net_device *dev,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int num = 0;
+ int err;
+
+ while ((u32) (ring->prod - ring->cons) < ring->actual_size) {
+ err = mlx4_en_prepare_rx_desc(priv, ring, ring->prod &
+ ring->size_mask);
+ if (err) {
+ if (netif_msg_rx_err(priv))
+ mlx4_warn(priv->mdev,
+ "Failed preparing rx descriptor\n");
+ priv->port_stats.rx_alloc_failed++;
+ break;
+ }
+ ++num;
+ ++ring->prod;
+ }
+ if ((u32) (ring->prod - ring->cons) == ring->size)
+ ring->full = 1;
+
+ return num;
+}
+
+static void mlx4_en_free_rx_buf(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct skb_frag_struct *skb_frags;
+ struct mlx4_en_rx_desc *rx_desc;
+ dma_addr_t dma;
+ int index;
+ int nr;
+
+ mlx4_dbg(DRV, priv, "Freeing Rx buf - cons:%d prod:%d\n",
+ ring->cons, ring->prod);
+
+ /* Unmap and free Rx buffers */
+ BUG_ON((u32) (ring->prod - ring->cons) > ring->size);
+ while (ring->cons != ring->prod) {
+ index = ring->cons & ring->size_mask;
+ rx_desc = ring->buf + (index << ring->log_stride);
+ skb_frags = ring->rx_info + (index << priv->log_rx_info);
+ mlx4_dbg(DRV, priv, "Processing descriptor:%d\n", index);
+
+ for (nr = 0; nr < priv->num_frags; nr++) {
+ mlx4_dbg(DRV, priv, "Freeing fragment:%d\n", nr);
+ dma = be64_to_cpu(rx_desc->data[nr].addr);
+
+ mlx4_dbg(DRV, priv, "Unmaping buffer at dma:0x%llx\n", (u64) dma);
+ pci_unmap_single(mdev->pdev, dma, skb_frags[nr].size,
+ PCI_DMA_FROMDEVICE);
+ put_page(skb_frags[nr].page);
+ }
+ ++ring->cons;
+ }
+}
+
+
+void mlx4_en_rx_refill(struct work_struct *work)
+{
+ struct delayed_work *delay = container_of(work, struct delayed_work, work);
+ struct mlx4_en_priv *priv = container_of(delay, struct mlx4_en_priv,
+ refill_task);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct net_device *dev = priv->dev;
+ struct mlx4_en_rx_ring *ring;
+ int need_refill = 0;
+ int i;
+
+ mutex_lock(&mdev->state_lock);
+ if (!mdev->device_up || !priv->port_up)
+ goto out;
+
+ /* We only get here if there are no receive buffers, so we can't race
+ * with Rx interrupts while filling buffers */
+ for (i = 0; i < priv->rx_ring_num; i++) {
+ ring = &priv->rx_ring[i];
+ if (ring->need_refill) {
+ if (mlx4_en_fill_rx_buf(dev, ring)) {
+ ring->need_refill = 0;
+ mlx4_en_update_rx_prod_db(ring);
+ } else
+ need_refill = 1;
+ }
+ }
+ if (need_refill)
+ queue_delayed_work(mdev->workqueue, &priv->refill_task, HZ);
+
+out:
+ mutex_unlock(&mdev->state_lock);
+}
+
+
+int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring, u32 size, u16 stride)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+ int tmp;
+
+ /* Sanity check SRQ size before proceeding */
+ if (size >= mdev->dev->caps.max_srq_wqes)
+ return -EINVAL;
+
+ ring->prod = 0;
+ ring->cons = 0;
+ ring->size = size;
+ ring->size_mask = size - 1;
+ ring->stride = stride;
+ ring->log_stride = ffs(ring->stride) - 1;
+ ring->buf_size = ring->size * ring->stride;
+
+ tmp = size * roundup_pow_of_two(MLX4_EN_MAX_RX_FRAGS *
+ sizeof(struct skb_frag_struct));
+ ring->rx_info = vmalloc(tmp);
+ if (!ring->rx_info) {
+ mlx4_err(mdev, "Failed allocating rx_info ring\n");
+ return -ENOMEM;
+ }
+ mlx4_dbg(DRV, priv, "Allocated rx_info ring at addr:%p size:%d\n",
+ ring->rx_info, tmp);
+
+ err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres,
+ ring->buf_size, 2 * PAGE_SIZE);
+ if (err)
+ goto err_ring;
+
+ err = mlx4_en_map_buffer(&ring->wqres.buf);
+ if (err) {
+ mlx4_err(mdev, "Failed to map RX buffer\n");
+ goto err_hwq;
+ }
+ ring->buf = ring->wqres.buf.direct.buf;
+
+ /* Configure lro mngr */
+ memset(&ring->lro, 0, sizeof(struct net_lro_mgr));
+ ring->lro.dev = priv->dev;
+ ring->lro.features = LRO_F_NAPI;
+ ring->lro.frag_align_pad = NET_IP_ALIGN;
+ ring->lro.ip_summed = CHECKSUM_UNNECESSARY;
+ ring->lro.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+ ring->lro.max_desc = mdev->profile.num_lro;
+ ring->lro.max_aggr = MAX_SKB_FRAGS;
+ ring->lro.lro_arr = kzalloc(mdev->profile.num_lro *
+ sizeof(struct net_lro_desc),
+ GFP_KERNEL);
+ if (!ring->lro.lro_arr) {
+ mlx4_err(mdev, "Failed to allocate lro array\n");
+ goto err_map;
+ }
+ ring->lro.get_frag_header = mlx4_en_get_frag_header;
+
+ return 0;
+
+err_map:
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+err_hwq:
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+err_ring:
+ vfree(ring->rx_info);
+ ring->rx_info = NULL;
+ return err;
+}
+
+int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_wqe_srq_next_seg *next;
+ struct mlx4_en_rx_ring *ring;
+ int i;
+ int ring_ind;
+ int err;
+ int stride = roundup_pow_of_two(sizeof(struct mlx4_en_rx_desc) +
+ DS_SIZE * priv->num_frags);
+ int max_gs = (stride - sizeof(struct mlx4_wqe_srq_next_seg)) / DS_SIZE;
+
+ for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+ ring = &priv->rx_ring[ring_ind];
+
+ ring->prod = 0;
+ ring->cons = 0;
+ ring->actual_size = 0;
+ ring->cqn = priv->rx_cq[ring_ind].mcq.cqn;
+
+ ring->stride = stride;
+ ring->log_stride = ffs(ring->stride) - 1;
+ ring->buf_size = ring->size * ring->stride;
+
+ memset(ring->buf, 0, ring->buf_size);
+ mlx4_en_update_rx_prod_db(ring);
+
+ /* Initailize all descriptors */
+ for (i = 0; i < ring->size; i++)
+ mlx4_en_init_rx_desc(priv, ring, i);
+
+ /* Initialize page allocators */
+ err = mlx4_en_init_allocator(priv, ring);
+ if (err) {
+ mlx4_err(mdev, "Failed initializing ring allocator\n");
+ goto err_allocator;
+ }
+
+ /* Fill Rx buffers */
+ ring->full = 0;
+ }
+ if (mlx4_en_fill_rx_buffers(priv))
+ goto err_buffers;
+
+ for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++) {
+ ring = &priv->rx_ring[ring_ind];
+
+ mlx4_en_update_rx_prod_db(ring);
+
+ /* Configure SRQ representing the ring */
+ ring->srq.max = ring->size;
+ ring->srq.max_gs = max_gs;
+ ring->srq.wqe_shift = ilog2(ring->stride);
+
+ for (i = 0; i < ring->srq.max; ++i) {
+ next = get_wqe(ring, i);
+ next->next_wqe_index =
+ cpu_to_be16((i + 1) & (ring->srq.max - 1));
+ }
+
+ err = mlx4_srq_alloc(mdev->dev, mdev->priv_pdn, &ring->wqres.mtt,
+ ring->wqres.db.dma, &ring->srq);
+ if (err){
+ mlx4_err(mdev, "Failed to allocate srq\n");
+ goto err_srq;
+ }
+ ring->srq.event = mlx4_en_srq_event;
+ }
+
+ return 0;
+
+err_srq:
+ while (ring_ind >= 0) {
+ ring = &priv->rx_ring[ring_ind];
+ mlx4_srq_free(mdev->dev, &ring->srq);
+ ring_ind--;
+ }
+
+err_buffers:
+ for (ring_ind = 0; ring_ind < priv->rx_ring_num; ring_ind++)
+ mlx4_en_free_rx_buf(priv, &priv->rx_ring[ring_ind]);
+
+ ring_ind = priv->rx_ring_num - 1;
+err_allocator:
+ while (ring_ind >= 0) {
+ mlx4_en_destroy_allocator(priv, &priv->rx_ring[ring_ind]);
+ ring_ind--;
+ }
+ return err;
+}
+
+void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ kfree(ring->lro.lro_arr);
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+ vfree(ring->rx_info);
+ ring->rx_info = NULL;
+}
+
+void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ mlx4_srq_free(mdev->dev, &ring->srq);
+ mlx4_en_free_rx_buf(priv, ring);
+ mlx4_en_destroy_allocator(priv, ring);
+}
+
+
+/* Unmap a completed descriptor and free unused pages */
+static int mlx4_en_complete_rx_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_desc *rx_desc,
+ struct skb_frag_struct *skb_frags,
+ struct skb_frag_struct *skb_frags_rx,
+ struct mlx4_en_rx_alloc *page_alloc,
+ int length)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_frag_info *frag_info;
+ int nr;
+ dma_addr_t dma;
+
+ /* Collect used fragments while replacing them in the HW descirptors */
+ for (nr = 0; nr < priv->num_frags; nr++) {
+ frag_info = &priv->frag_info[nr];
+ if (length <= frag_info->frag_prefix_size)
+ break;
+
+ /* Save page reference in skb */
+ skb_frags_rx[nr].page = skb_frags[nr].page;
+ skb_frags_rx[nr].size = skb_frags[nr].size;
+ skb_frags_rx[nr].page_offset = skb_frags[nr].page_offset;
+ dma = be64_to_cpu(rx_desc->data[nr].addr);
+
+ /* Allocate a replacement page */
+ if (mlx4_en_alloc_frag(priv, rx_desc, skb_frags, page_alloc, nr))
+ goto fail;
+
+ /* Unmap buffer */
+ pci_unmap_single(mdev->pdev, dma, skb_frags[nr].size,
+ PCI_DMA_FROMDEVICE);
+ }
+ /* Adjust size of last fragment to match actual length */
+ skb_frags_rx[nr - 1].size = length -
+ priv->frag_info[nr - 1].frag_prefix_size;
+ return nr;
+
+fail:
+ /* Drop all accumulated fragments (which have already been replaced in
+ * the descriptor) of this packet; remaining fragments are reused... */
+ while (nr > 0) {
+ nr--;
+ put_page(skb_frags_rx[nr].page);
+ }
+ return 0;
+}
+
+
+static struct sk_buff *mlx4_en_rx_skb(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_desc *rx_desc,
+ struct skb_frag_struct *skb_frags,
+ struct mlx4_en_rx_alloc *page_alloc,
+ unsigned int length)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct sk_buff *skb;
+ void *va;
+ int used_frags;
+ dma_addr_t dma;
+
+ skb = dev_alloc_skb(SMALL_PACKET_SIZE + NET_IP_ALIGN);
+ if (!skb) {
+ mlx4_dbg(RX_ERR, priv, "Failed allocating skb\n");
+ return NULL;
+ }
+ skb->dev = priv->dev;
+ skb_reserve(skb, NET_IP_ALIGN);
+ skb->len = length;
+ skb->truesize = length + sizeof(struct sk_buff);
+
+ /* Get pointer to first fragment so we could copy the headers into the
+ * (linear part of the) skb */
+ va = page_address(skb_frags[0].page) + skb_frags[0].page_offset;
+
+ if (length <= SMALL_PACKET_SIZE) {
+ /* We are copying all relevant data to the skb - temporarily
+ * synch buffers for the copy */
+ dma = be64_to_cpu(rx_desc->data[0].addr);
+ dma_sync_single_range_for_cpu(&mdev->pdev->dev, dma, 0,
+ length, DMA_FROM_DEVICE);
+ skb_copy_to_linear_data(skb, va, length);
+ dma_sync_single_range_for_device(&mdev->pdev->dev, dma, 0,
+ length, DMA_FROM_DEVICE);
+ skb->tail += length;
+ } else {
+
+ /* Move relevant fragments to skb */
+ used_frags = mlx4_en_complete_rx_desc(priv, rx_desc, skb_frags,
+ skb_shinfo(skb)->frags,
+ page_alloc, length);
+ skb_shinfo(skb)->nr_frags = used_frags;
+
+ /* Copy headers into the skb linear buffer */
+ memcpy(skb->data, va, HEADER_COPY_SIZE);
+ skb->tail += HEADER_COPY_SIZE;
+
+ /* Skip headers in first fragment */
+ skb_shinfo(skb)->frags[0].page_offset += HEADER_COPY_SIZE;
+
+ /* Adjust size of first fragment */
+ skb_shinfo(skb)->frags[0].size -= HEADER_COPY_SIZE;
+ skb->data_len = length - HEADER_COPY_SIZE;
+ }
+ return skb;
+}
+
+static void mlx4_en_copy_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring,
+ int from, int to, int num)
+{
+ struct skb_frag_struct *skb_frags_from;
+ struct skb_frag_struct *skb_frags_to;
+ struct mlx4_en_rx_desc *rx_desc_from;
+ struct mlx4_en_rx_desc *rx_desc_to;
+ int from_index, to_index;
+ int nr, i;
+
+ for (i = 0; i < num; i++) {
+ from_index = (from + i) & ring->size_mask;
+ to_index = (to + i) & ring->size_mask;
+ skb_frags_from = ring->rx_info + (from_index << priv->log_rx_info);
+ skb_frags_to = ring->rx_info + (to_index << priv->log_rx_info);
+ rx_desc_from = ring->buf + (from_index << ring->log_stride);
+ rx_desc_to = ring->buf + (to_index << ring->log_stride);
+
+ for (nr = 0; nr < priv->num_frags; nr++) {
+ skb_frags_to[nr].page = skb_frags_from[nr].page;
+ skb_frags_to[nr].page_offset = skb_frags_from[nr].page_offset;
+ rx_desc_to->data[nr].addr = rx_desc_from->data[nr].addr;
+ }
+ }
+}
+
+
+int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int budget)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_cqe *cqe;
+ struct mlx4_en_rx_ring *ring = &priv->rx_ring[cq->ring];
+ struct skb_frag_struct *skb_frags;
+ struct skb_frag_struct lro_frags[MLX4_EN_MAX_RX_FRAGS];
+ struct mlx4_en_rx_desc *rx_desc;
+ struct sk_buff *skb;
+ int index;
+ int nr;
+ unsigned int length;
+ int polled = 0;
+ int ip_summed;
+
+ if (!priv->port_up)
+ return 0;
+
+ /* We assume a 1:1 mapping between CQEs and Rx descriptors, so Rx
+ * descriptor offset can be deduced from the CQE index instead of
+ * reading 'cqe->index' */
+ index = cq->mcq.cons_index & ring->size_mask;
+ cqe = &cq->buf[index];
+
+ /* Process all completed CQEs */
+ while (XNOR(cqe->owner_sr_opcode & MLX4_CQE_OWNER_MASK,
+ cq->mcq.cons_index & cq->size)) {
+
+ skb_frags = ring->rx_info + (index << priv->log_rx_info);
+ rx_desc = ring->buf + (index << ring->log_stride);
+
+ /*
+ * make sure we read the CQE after we read the ownership bit
+ */
+ rmb();
+
+ /* Drop packet on bad receive or bad checksum */
+ if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
+ MLX4_CQE_OPCODE_ERROR)) {
+ mlx4_err(mdev, "CQE completed in error - vendor "
+ "syndrom:%d syndrom:%d\n",
+ ((struct mlx4_err_cqe *) cqe)->vendor_err_syndrome,
+ ((struct mlx4_err_cqe *) cqe)->syndrome);
+ goto next;
+ }
+ if (unlikely(cqe->badfcs_enc & MLX4_CQE_BAD_FCS)) {
+ mlx4_dbg(RX_ERR, priv, "Accepted frame with bad FCS\n");
+ goto next;
+ }
+
+ /*
+ * Packet is OK - process it.
+ */
+ length = be32_to_cpu(cqe->byte_cnt);
+ ring->bytes += length;
+ ring->packets++;
+
+ if (likely(priv->rx_csum)) {
+ if ((cqe->status & cpu_to_be16(MLX4_CQE_STATUS_IPOK)) &&
+ (cqe->checksum == cpu_to_be16(0xffff))) {
+ priv->port_stats.rx_chksum_good++;
+ /* This packet is eligible for LRO if it is:
+ * - DIX Ethernet (type interpretation)
+ * - TCP/IP (v4)
+ * - without IP options
+ * - not an IP fragment */
+ if (mlx4_en_can_lro(cqe->status) &&
+ dev->features & NETIF_F_LRO) {
+
+ nr = mlx4_en_complete_rx_desc(
+ priv, rx_desc,
+ skb_frags, lro_frags,
+ ring->page_alloc, length);
+ if (!nr)
+ goto next;
+
+ if (priv->vlgrp && (cqe->vlan_my_qpn &
+ cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK))) {
+ lro_vlan_hwaccel_receive_frags(
+ &ring->lro, lro_frags,
+ length, length,
+ priv->vlgrp,
+ be16_to_cpu(cqe->sl_vid),
+ NULL, 0);
+ } else
+ lro_receive_frags(&ring->lro,
+ lro_frags,
+ length,
+ length,
+ NULL, 0);
+
+ goto next;
+ }
+
+ /* LRO not possible, complete processing here */
+ ip_summed = CHECKSUM_UNNECESSARY;
+ INC_PERF_COUNTER(priv->pstats.lro_misses);
+ } else {
+ ip_summed = CHECKSUM_NONE;
+ priv->port_stats.rx_chksum_none++;
+ }
+ } else {
+ ip_summed = CHECKSUM_NONE;
+ priv->port_stats.rx_chksum_none++;
+ }
+
+ skb = mlx4_en_rx_skb(priv, rx_desc, skb_frags,
+ ring->page_alloc, length);
+ if (!skb) {
+ priv->stats.rx_dropped++;
+ goto next;
+ }
+
+ skb->ip_summed = ip_summed;
+ skb->protocol = eth_type_trans(skb, dev);
+
+ /* Push it up the stack */
+ if (priv->vlgrp && (be32_to_cpu(cqe->vlan_my_qpn) &
+ MLX4_CQE_VLAN_PRESENT_MASK)) {
+ vlan_hwaccel_receive_skb(skb, priv->vlgrp,
+ be16_to_cpu(cqe->sl_vid));
+ } else
+ netif_receive_skb(skb);
+
+ dev->last_rx = jiffies;
+
+next:
+ ++cq->mcq.cons_index;
+ index = (cq->mcq.cons_index) & ring->size_mask;
+ cqe = &cq->buf[index];
+ if (++polled == budget) {
+ /* We are here because we reached the NAPI budget -
+ * flush only pending LRO sessions */
+ lro_flush_all(&ring->lro);
+ goto out;
+ }
+ }
+
+ /* If CQ is empty flush all LRO sessions unconditionally */
+ lro_flush_all(&ring->lro);
+
+out:
+ AVG_PERF_COUNTER(priv->pstats.rx_coal_avg, polled);
+ mlx4_cq_set_ci(&cq->mcq);
+ wmb(); /* ensure HW sees CQ consumer before we post new buffers */
+ ring->cons = cq->mcq.cons_index;
+ ring->prod += polled; /* Polled descriptors were realocated in place */
+ if (unlikely(!ring->full)) {
+ mlx4_en_copy_desc(priv, ring, ring->cons - polled,
+ ring->prod - polled, polled);
+ mlx4_en_fill_rx_buf(dev, ring);
+ }
+ mlx4_en_update_rx_prod_db(ring);
+ return polled;
+}
+
+
+void mlx4_en_rx_irq(struct mlx4_cq *mcq)
+{
+ struct mlx4_en_cq *cq = container_of(mcq, struct mlx4_en_cq, mcq);
+ struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+
+ if (priv->port_up)
+ netif_rx_schedule(cq->dev, &cq->napi);
+ else
+ mlx4_en_arm_cq(priv, cq);
+}
+
+/* Rx CQ polling - called by NAPI */
+int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget)
+{
+ struct mlx4_en_cq *cq = container_of(napi, struct mlx4_en_cq, napi);
+ struct net_device *dev = cq->dev;
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int done;
+
+ done = mlx4_en_process_rx_cq(dev, cq, budget);
+
+ /* If we used up all the quota - we're probably not done yet... */
+ if (done == budget)
+ INC_PERF_COUNTER(priv->pstats.napi_quota);
+ else {
+ /* Done for now */
+ netif_rx_complete(dev, napi);
+ mlx4_en_arm_cq(priv, cq);
+ }
+ return done;
+}
+
+
+/* Calculate the last offset position that accomodates a full fragment
+ * (assuming fagment size = stride-align) */
+static int mlx4_en_last_alloc_offset(struct mlx4_en_priv *priv, u16 stride, u16 align)
+{
+ u16 res = MLX4_EN_ALLOC_SIZE % stride;
+ u16 offset = MLX4_EN_ALLOC_SIZE - stride - res + align;
+
+ mlx4_dbg(DRV, priv, "Calculated last offset for stride:%d align:%d "
+ "res:%d offset:%d\n", stride, align, res, offset);
+ return offset;
+}
+
+
+static int frag_sizes[] = {
+ FRAG_SZ0,
+ FRAG_SZ1,
+ FRAG_SZ2,
+ FRAG_SZ3
+};
+
+void mlx4_en_calc_rx_buf(struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int eff_mtu = dev->mtu + ETH_HLEN + VLAN_HLEN + ETH_LLC_SNAP_SIZE;
+ int buf_size = 0;
+ int i = 0;
+
+ while (buf_size < eff_mtu) {
+ priv->frag_info[i].frag_size =
+ (eff_mtu > buf_size + frag_sizes[i]) ?
+ frag_sizes[i] : eff_mtu - buf_size;
+ priv->frag_info[i].frag_prefix_size = buf_size;
+ if (!i) {
+ priv->frag_info[i].frag_align = NET_IP_ALIGN;
+ priv->frag_info[i].frag_stride =
+ ALIGN(frag_sizes[i] + NET_IP_ALIGN, SMP_CACHE_BYTES);
+ } else {
+ priv->frag_info[i].frag_align = 0;
+ priv->frag_info[i].frag_stride =
+ ALIGN(frag_sizes[i], SMP_CACHE_BYTES);
+ }
+ priv->frag_info[i].last_offset = mlx4_en_last_alloc_offset(
+ priv, priv->frag_info[i].frag_stride,
+ priv->frag_info[i].frag_align);
+ buf_size += priv->frag_info[i].frag_size;
+ i++;
+ }
+
+ priv->num_frags = i;
+ priv->rx_skb_size = eff_mtu;
+ priv->log_rx_info = ROUNDUP_LOG2(i * sizeof(struct skb_frag_struct));
+
+ mlx4_dbg(DRV, priv, "Rx buffer scatter-list (effective-mtu:%d "
+ "num_frags:%d):\n", eff_mtu, priv->num_frags);
+ for (i = 0; i < priv->num_frags; i++) {
+ mlx4_dbg(DRV, priv, " frag:%d - size:%d prefix:%d align:%d "
+ "stride:%d last_offset:%d\n", i,
+ priv->frag_info[i].frag_size,
+ priv->frag_info[i].frag_prefix_size,
+ priv->frag_info[i].frag_align,
+ priv->frag_info[i].frag_stride,
+ priv->frag_info[i].last_offset);
+ }
+}
+
+/* RSS related functions */
+
+/* Calculate rss size and map each entry in rss table to rx ring */
+void mlx4_en_set_default_rss_map(struct mlx4_en_priv *priv,
+ struct mlx4_en_rss_map *rss_map,
+ int num_entries, int num_rings)
+{
+ int i;
+
+ rss_map->size = roundup_pow_of_two(num_entries);
+ mlx4_dbg(DRV, priv, "Setting default RSS map of %d entires\n",
+ rss_map->size);
+
+ for (i = 0; i < rss_map->size; i++) {
+ rss_map->map[i] = i % num_rings;
+ mlx4_dbg(DRV, priv, "Entry %d ---> ring %d\n", i, rss_map->map[i]);
+ }
+}
+
+static void mlx4_en_sqp_event(struct mlx4_qp *qp, enum mlx4_event event)
+{
+ return;
+}
+
+
+static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv,
+ int qpn, int srqn, int cqn,
+ enum mlx4_qp_state *state,
+ struct mlx4_qp *qp)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_qp_context *context;
+ int err = 0;
+
+ context = kmalloc(sizeof *context , GFP_KERNEL);
+ if (!context) {
+ mlx4_err(mdev, "Failed to allocate qp context\n");
+ return -ENOMEM;
+ }
+
+ err = mlx4_qp_alloc(mdev->dev, qpn, qp);
+ if (err) {
+ mlx4_err(mdev, "Failed to allocate qp #%d\n", qpn);
+ goto out;
+ return err;
+ }
+ qp->event = mlx4_en_sqp_event;
+
+ memset(context, 0, sizeof *context);
+ mlx4_en_fill_qp_context(priv, 0, 0, 0, 0, qpn, cqn, srqn, context);
+
+ err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, context, qp, state);
+ if (err) {
+ mlx4_qp_remove(mdev->dev, qp);
+ mlx4_qp_free(mdev->dev, qp);
+ }
+out:
+ kfree(context);
+ return err;
+}
+
+/* Allocate rx qp's and configure them according to rss map */
+int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_rss_map *rss_map = &priv->rss_map;
+ struct mlx4_qp_context context;
+ struct mlx4_en_rss_context *rss_context;
+ void *ptr;
+ int rss_xor = mdev->profile.rss_xor;
+ u8 rss_mask = mdev->profile.rss_mask;
+ int i, srqn, qpn, cqn;
+ int err = 0;
+ int good_qps = 0;
+
+ mlx4_dbg(DRV, priv, "Configuring rss steering for port %u\n", priv->port);
+ err = mlx4_qp_reserve_range(mdev->dev, rss_map->size,
+ rss_map->size, &rss_map->base_qpn);
+ if (err) {
+ mlx4_err(mdev, "Failed reserving %d qps for port %u\n",
+ rss_map->size, priv->port);
+ return err;
+ }
+
+ for (i = 0; i < rss_map->size; i++) {
+ cqn = priv->rx_ring[rss_map->map[i]].cqn;
+ srqn = priv->rx_ring[rss_map->map[i]].srq.srqn;
+ qpn = rss_map->base_qpn + i;
+ err = mlx4_en_config_rss_qp(priv, qpn, srqn, cqn,
+ &rss_map->state[i],
+ &rss_map->qps[i]);
+ if (err)
+ goto rss_err;
+
+ ++good_qps;
+ }
+
+ /* Configure RSS indirection qp */
+ err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &priv->base_qpn);
+ if (err) {
+ mlx4_err(mdev, "Failed to reserve range for RSS "
+ "indirection qp\n");
+ goto rss_err;
+ }
+ err = mlx4_qp_alloc(mdev->dev, priv->base_qpn, &rss_map->indir_qp);
+ if (err) {
+ mlx4_err(mdev, "Failed to allocate RSS indirection QP\n");
+ goto reserve_err;
+ }
+ rss_map->indir_qp.event = mlx4_en_sqp_event;
+ mlx4_en_fill_qp_context(priv, 0, 0, 0, 1, priv->base_qpn,
+ priv->rx_ring[0].cqn, 0, &context);
+
+ ptr = ((void *) &context) + 0x3c;
+ rss_context = (struct mlx4_en_rss_context *) ptr;
+ rss_context->base_qpn = cpu_to_be32(ilog2(rss_map->size) << 24 |
+ (rss_map->base_qpn));
+ rss_context->default_qpn = cpu_to_be32(rss_map->base_qpn);
+ rss_context->hash_fn = rss_xor & 0x3;
+ rss_context->flags = rss_mask << 2;
+
+ err = mlx4_qp_to_ready(mdev->dev, &priv->res.mtt, &context,
+ &rss_map->indir_qp, &rss_map->indir_state);
+ if (err)
+ goto indir_err;
+
+ return 0;
+
+indir_err:
+ mlx4_qp_modify(mdev->dev, NULL, rss_map->indir_state,
+ MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->indir_qp);
+ mlx4_qp_remove(mdev->dev, &rss_map->indir_qp);
+ mlx4_qp_free(mdev->dev, &rss_map->indir_qp);
+reserve_err:
+ mlx4_qp_release_range(mdev->dev, priv->base_qpn, 1);
+rss_err:
+ for (i = 0; i < good_qps; i++) {
+ mlx4_qp_modify(mdev->dev, NULL, rss_map->state[i],
+ MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->qps[i]);
+ mlx4_qp_remove(mdev->dev, &rss_map->qps[i]);
+ mlx4_qp_free(mdev->dev, &rss_map->qps[i]);
+ }
+ mlx4_qp_release_range(mdev->dev, rss_map->base_qpn, rss_map->size);
+ return err;
+}
+
+void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_rss_map *rss_map = &priv->rss_map;
+ int i;
+
+ mlx4_qp_modify(mdev->dev, NULL, rss_map->indir_state,
+ MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->indir_qp);
+ mlx4_qp_remove(mdev->dev, &rss_map->indir_qp);
+ mlx4_qp_free(mdev->dev, &rss_map->indir_qp);
+ mlx4_qp_release_range(mdev->dev, priv->base_qpn, 1);
+
+ for (i = 0; i < rss_map->size; i++) {
+ mlx4_qp_modify(mdev->dev, NULL, rss_map->state[i],
+ MLX4_QP_STATE_RST, NULL, 0, 0, &rss_map->qps[i]);
+ mlx4_qp_remove(mdev->dev, &rss_map->qps[i]);
+ mlx4_qp_free(mdev->dev, &rss_map->qps[i]);
+ }
+ mlx4_qp_release_range(mdev->dev, rss_map->base_qpn, rss_map->size);
+}
+
+
+
+
+
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#include <asm/page.h>
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/qp.h>
+#include <linux/skbuff.h>
+#include <linux/if_vlan.h>
+#include <linux/vmalloc.h>
+
+#include "mlx4_en.h"
+
+enum {
+ MAX_INLINE = 104, /* 128 - 16 - 4 - 4 */
+};
+
+static int inline_thold __read_mostly = MAX_INLINE;
+
+module_param_named(inline_thold, inline_thold, int, 0444);
+MODULE_PARM_DESC(inline_thold, "treshold for using inline data");
+
+int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring, u32 size,
+ u16 stride)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int tmp;
+ int err;
+
+ ring->size = size;
+ ring->size_mask = size - 1;
+ ring->stride = stride;
+
+ inline_thold = min(inline_thold, MAX_INLINE);
+
+ spin_lock_init(&ring->comp_lock);
+
+ tmp = size * sizeof(struct mlx4_en_tx_info);
+ ring->tx_info = vmalloc(tmp);
+ if (!ring->tx_info) {
+ mlx4_err(mdev, "Failed allocating tx_info ring\n");
+ return -ENOMEM;
+ }
+ mlx4_dbg(DRV, priv, "Allocated tx_info ring at addr:%p size:%d\n",
+ ring->tx_info, tmp);
+
+ ring->bounce_buf = kmalloc(MAX_DESC_SIZE, GFP_KERNEL);
+ if (!ring->bounce_buf) {
+ mlx4_err(mdev, "Failed allocating bounce buffer\n");
+ err = -ENOMEM;
+ goto err_tx;
+ }
+ ring->buf_size = ALIGN(size * ring->stride, MLX4_EN_PAGE_SIZE);
+
+ err = mlx4_alloc_hwq_res(mdev->dev, &ring->wqres, ring->buf_size,
+ 2 * PAGE_SIZE);
+ if (err) {
+ mlx4_err(mdev, "Failed allocating hwq resources\n");
+ goto err_bounce;
+ }
+
+ err = mlx4_en_map_buffer(&ring->wqres.buf);
+ if (err) {
+ mlx4_err(mdev, "Failed to map TX buffer\n");
+ goto err_hwq_res;
+ }
+
+ ring->buf = ring->wqres.buf.direct.buf;
+
+ mlx4_dbg(DRV, priv, "Allocated TX ring (addr:%p) - buf:%p size:%d "
+ "buf_size:%d dma:%llx\n", ring, ring->buf, ring->size,
+ ring->buf_size, (unsigned long long) ring->wqres.buf.direct.map);
+
+ err = mlx4_qp_reserve_range(mdev->dev, 1, 1, &ring->qpn);
+ if (err) {
+ mlx4_err(mdev, "Failed reserving qp for tx ring.\n");
+ goto err_map;
+ }
+
+ err = mlx4_qp_alloc(mdev->dev, ring->qpn, &ring->qp);
+ if (err) {
+ mlx4_err(mdev, "Failed allocating qp %d\n", ring->qpn);
+ goto err_reserve;
+ }
+
+ return 0;
+
+err_reserve:
+ mlx4_qp_release_range(mdev->dev, ring->qpn, 1);
+err_map:
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+err_hwq_res:
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+err_bounce:
+ kfree(ring->bounce_buf);
+ ring->bounce_buf = NULL;
+err_tx:
+ vfree(ring->tx_info);
+ ring->tx_info = NULL;
+ return err;
+}
+
+void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ mlx4_dbg(DRV, priv, "Destroying tx ring, qpn: %d\n", ring->qpn);
+
+ mlx4_qp_remove(mdev->dev, &ring->qp);
+ mlx4_qp_free(mdev->dev, &ring->qp);
+ mlx4_qp_release_range(mdev->dev, ring->qpn, 1);
+ mlx4_en_unmap_buffer(&ring->wqres.buf);
+ mlx4_free_hwq_res(mdev->dev, &ring->wqres, ring->buf_size);
+ kfree(ring->bounce_buf);
+ ring->bounce_buf = NULL;
+ vfree(ring->tx_info);
+ ring->tx_info = NULL;
+}
+
+int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring,
+ int cq, int srqn)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int err;
+
+ ring->cqn = cq;
+ ring->prod = 0;
+ ring->cons = 0xffffffff;
+ ring->last_nr_txbb = 1;
+ ring->poll_cnt = 0;
+ ring->blocked = 0;
+ memset(ring->tx_info, 0, ring->size * sizeof(struct mlx4_en_tx_info));
+ memset(ring->buf, 0, ring->buf_size);
+
+ ring->qp_state = MLX4_QP_STATE_RST;
+ ring->doorbell_qpn = swab32(ring->qp.qpn << 8);
+
+ mlx4_en_fill_qp_context(priv, ring->size, ring->stride, 1, 0, ring->qpn,
+ ring->cqn, srqn, &ring->context);
+
+ err = mlx4_qp_to_ready(mdev->dev, &ring->wqres.mtt, &ring->context,
+ &ring->qp, &ring->qp_state);
+
+ return err;
+}
+
+void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+
+ mlx4_qp_modify(mdev->dev, NULL, ring->qp_state,
+ MLX4_QP_STATE_RST, NULL, 0, 0, &ring->qp);
+}
+
+
+static u32 mlx4_en_free_tx_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring,
+ int index, u8 owner)
+{
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_tx_info *tx_info = &ring->tx_info[index];
+ struct mlx4_en_tx_desc *tx_desc = ring->buf + index * TXBB_SIZE;
+ struct mlx4_wqe_data_seg *data = (void *) tx_desc + tx_info->data_offset;
+ struct sk_buff *skb = tx_info->skb;
+ struct skb_frag_struct *frag;
+ void *end = ring->buf + ring->buf_size;
+ int frags = skb_shinfo(skb)->nr_frags;
+ int i;
+ __be32 *ptr = (__be32 *)tx_desc;
+ __be32 stamp = cpu_to_be32(STAMP_VAL | (!!owner << STAMP_SHIFT));
+
+ /* Optimize the common case when there are no wraparounds */
+ if (likely((void *) tx_desc + tx_info->nr_txbb * TXBB_SIZE <= end)) {
+ if (tx_info->linear) {
+ pci_unmap_single(mdev->pdev,
+ (dma_addr_t) be64_to_cpu(data->addr),
+ be32_to_cpu(data->byte_count),
+ PCI_DMA_TODEVICE);
+ ++data;
+ }
+
+ for (i = 0; i < frags; i++) {
+ frag = &skb_shinfo(skb)->frags[i];
+ pci_unmap_page(mdev->pdev,
+ (dma_addr_t) be64_to_cpu(data[i].addr),
+ frag->size, PCI_DMA_TODEVICE);
+ }
+ /* Stamp the freed descriptor */
+ for (i = 0; i < tx_info->nr_txbb * TXBB_SIZE; i += STAMP_STRIDE) {
+ *ptr = stamp;
+ ptr += STAMP_DWORDS;
+ }
+
+ } else {
+ if ((void *) data >= end) {
+ data = (struct mlx4_wqe_data_seg *)
+ (ring->buf + ((void *) data - end));
+ }
+
+ if (tx_info->linear) {
+ pci_unmap_single(mdev->pdev,
+ (dma_addr_t) be64_to_cpu(data->addr),
+ be32_to_cpu(data->byte_count),
+ PCI_DMA_TODEVICE);
+ ++data;
+ }
+
+ for (i = 0; i < frags; i++) {
+ /* Check for wraparound before unmapping */
+ if ((void *) data >= end)
+ data = (struct mlx4_wqe_data_seg *) ring->buf;
+ frag = &skb_shinfo(skb)->frags[i];
+ pci_unmap_page(mdev->pdev,
+ (dma_addr_t) be64_to_cpu(data->addr),
+ frag->size, PCI_DMA_TODEVICE);
+ }
+ /* Stamp the freed descriptor */
+ for (i = 0; i < tx_info->nr_txbb * TXBB_SIZE; i += STAMP_STRIDE) {
+ *ptr = stamp;
+ ptr += STAMP_DWORDS;
+ if ((void *) ptr >= end) {
+ ptr = ring->buf;
+ stamp ^= cpu_to_be32(0x80000000);
+ }
+ }
+
+ }
+ dev_kfree_skb_any(skb);
+ return tx_info->nr_txbb;
+}
+
+
+int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ int cnt = 0;
+
+ /* Skip last polled descriptor */
+ ring->cons += ring->last_nr_txbb;
+ mlx4_dbg(DRV, priv, "Freeing Tx buf - cons:0x%x prod:0x%x\n",
+ ring->cons, ring->prod);
+
+ if ((u32) (ring->prod - ring->cons) > ring->size) {
+ if (netif_msg_tx_err(priv))
+ mlx4_warn(priv->mdev, "Tx consumer passed producer!\n");
+ return 0;
+ }
+
+ while (ring->cons != ring->prod) {
+ ring->last_nr_txbb = mlx4_en_free_tx_desc(priv, ring,
+ ring->cons & ring->size_mask,
+ !!(ring->cons & ring->size));
+ ring->cons += ring->last_nr_txbb;
+ cnt++;
+ }
+
+ if (cnt)
+ mlx4_dbg(DRV, priv, "Freed %d uncompleted tx descriptors\n", cnt);
+
+ return cnt;
+}
+
+void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num)
+{
+ int block = 8 / ring_num;
+ int extra = 8 - (block * ring_num);
+ int num = 0;
+ u16 ring = 1;
+ int prio;
+
+ if (ring_num == 1) {
+ for (prio = 0; prio < 8; prio++)
+ prio_map[prio] = 0;
+ return;
+ }
+
+ for (prio = 0; prio < 8; prio++) {
+ if (extra && (num == block + 1)) {
+ ring++;
+ num = 0;
+ extra--;
+ } else if (!extra && (num == block)) {
+ ring++;
+ num = 0;
+ }
+ prio_map[prio] = ring;
+ mlx4_dbg(DRV, priv, " prio:%d --> ring:%d\n", prio, ring);
+ num++;
+ }
+}
+
+static void mlx4_en_process_tx_cq(struct net_device *dev, struct mlx4_en_cq *cq)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_cq *mcq = &cq->mcq;
+ struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+ struct mlx4_cqe *cqe = cq->buf;
+ u16 index;
+ u16 new_index;
+ u32 txbbs_skipped = 0;
+ u32 cq_last_sav;
+
+ /* index always points to the first TXBB of the last polled descriptor */
+ index = ring->cons & ring->size_mask;
+ new_index = be16_to_cpu(cqe->wqe_index) & ring->size_mask;
+ if (index == new_index)
+ return;
+
+ if (!priv->port_up)
+ return;
+
+ /*
+ * We use a two-stage loop:
+ * - the first samples the HW-updated CQE
+ * - the second frees TXBBs until the last sample
+ * This lets us amortize CQE cache misses, while still polling the CQ
+ * until is quiescent.
+ */
+ cq_last_sav = mcq->cons_index;
+ do {
+ do {
+ /* Skip over last polled CQE */
+ index = (index + ring->last_nr_txbb) & ring->size_mask;
+ txbbs_skipped += ring->last_nr_txbb;
+
+ /* Poll next CQE */
+ ring->last_nr_txbb = mlx4_en_free_tx_desc(
+ priv, ring, index,
+ !!((ring->cons + txbbs_skipped) &
+ ring->size));
+ ++mcq->cons_index;
+
+ } while (index != new_index);
+
+ new_index = be16_to_cpu(cqe->wqe_index) & ring->size_mask;
+ } while (index != new_index);
+ AVG_PERF_COUNTER(priv->pstats.tx_coal_avg,
+ (u32) (mcq->cons_index - cq_last_sav));
+
+ /*
+ * To prevent CQ overflow we first update CQ consumer and only then
+ * the ring consumer.
+ */
+ mlx4_cq_set_ci(mcq);
+ wmb();
+ ring->cons += txbbs_skipped;
+
+ /* Wakeup Tx queue if this ring stopped it */
+ if (unlikely(ring->blocked)) {
+ if (((u32) (ring->prod - ring->cons) <=
+ ring->size - HEADROOM - MAX_DESC_TXBBS) && !cq->armed) {
+
+ /* TODO: support multiqueue netdevs. Currently, we block
+ * when *any* ring is full. Note that:
+ * - 2 Tx rings can unblock at the same time and call
+ * netif_wake_queue(), which is OK since this
+ * operation is idempotent.
+ * - We might wake the queue just after another ring
+ * stopped it. This is no big deal because the next
+ * transmission on that ring would stop the queue.
+ */
+ ring->blocked = 0;
+ netif_wake_queue(dev);
+ priv->port_stats.wake_queue++;
+ }
+ }
+}
+
+void mlx4_en_tx_irq(struct mlx4_cq *mcq)
+{
+ struct mlx4_en_cq *cq = container_of(mcq, struct mlx4_en_cq, mcq);
+ struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+ struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+
+ spin_lock_irq(&ring->comp_lock);
+ cq->armed = 0;
+ mlx4_en_process_tx_cq(cq->dev, cq);
+ if (ring->blocked)
+ mlx4_en_arm_cq(priv, cq);
+ else
+ mod_timer(&cq->timer, jiffies + 1);
+ spin_unlock_irq(&ring->comp_lock);
+}
+
+
+void mlx4_en_poll_tx_cq(unsigned long data)
+{
+ struct mlx4_en_cq *cq = (struct mlx4_en_cq *) data;
+ struct mlx4_en_priv *priv = netdev_priv(cq->dev);
+ struct mlx4_en_tx_ring *ring = &priv->tx_ring[cq->ring];
+ u32 inflight;
+
+ INC_PERF_COUNTER(priv->pstats.tx_poll);
+
+ netif_tx_lock(priv->dev);
+ spin_lock_irq(&ring->comp_lock);
+ mlx4_en_process_tx_cq(cq->dev, cq);
+ inflight = (u32) (ring->prod - ring->cons - ring->last_nr_txbb);
+
+ /* If there are still packets in flight and the timer has not already
+ * been scheduled by the Tx routine then schedule it here to guarantee
+ * completion processing of these packets */
+ if (inflight && priv->port_up)
+ mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
+
+ spin_unlock_irq(&ring->comp_lock);
+ netif_tx_unlock(priv->dev);
+}
+
+static struct mlx4_en_tx_desc *mlx4_en_bounce_to_desc(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring,
+ u32 index,
+ unsigned int desc_size)
+{
+ u32 copy = (ring->size - index) * TXBB_SIZE;
+ int i;
+
+ for (i = desc_size - copy - 4; i >= 0; i -= 4) {
+ if ((i & (TXBB_SIZE - 1)) == 0)
+ wmb();
+
+ *((u32 *) (ring->buf + i)) =
+ *((u32 *) (ring->bounce_buf + copy + i));
+ }
+
+ for (i = copy - 4; i >= 4 ; i -= 4) {
+ if ((i & (TXBB_SIZE - 1)) == 0)
+ wmb();
+
+ *((u32 *) (ring->buf + index * TXBB_SIZE + i)) =
+ *((u32 *) (ring->bounce_buf + i));
+ }
+
+ /* Return real descriptor location */
+ return ring->buf + index * TXBB_SIZE;
+}
+
+static inline void mlx4_en_xmit_poll(struct mlx4_en_priv *priv, int tx_ind)
+{
+ struct mlx4_en_cq *cq = &priv->tx_cq[tx_ind];
+ struct mlx4_en_tx_ring *ring = &priv->tx_ring[tx_ind];
+
+ /* If we don't have a pending timer, set one up to catch our recent
+ post in case the interface becomes idle */
+ if (!timer_pending(&cq->timer))
+ mod_timer(&cq->timer, jiffies + MLX4_EN_TX_POLL_TIMEOUT);
+
+ /* Poll the CQ every mlx4_en_TX_MODER_POLL packets */
+ if ((++ring->poll_cnt & (MLX4_EN_TX_POLL_MODER - 1)) == 0)
+ mlx4_en_process_tx_cq(priv->dev, cq);
+}
+
+static void *get_frag_ptr(struct sk_buff *skb)
+{
+ struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0];
+ struct page *page = frag->page;
+ void *ptr;
+
+ ptr = page_address(page);
+ if (unlikely(!ptr))
+ return NULL;
+
+ return ptr + frag->page_offset;
+}
+
+static int is_inline(struct sk_buff *skb, void **pfrag)
+{
+ void *ptr;
+
+ if (inline_thold && !skb_is_gso(skb) && skb->len <= inline_thold) {
+ if (skb_shinfo(skb)->nr_frags == 1) {
+ ptr = get_frag_ptr(skb);
+ if (unlikely(!ptr))
+ return 0;
+
+ if (pfrag)
+ *pfrag = ptr;
+
+ return 1;
+ } else if (unlikely(skb_shinfo(skb)->nr_frags))
+ return 0;
+ else
+ return 1;
+ }
+
+ return 0;
+}
+
+static int inline_size(struct sk_buff *skb)
+{
+ if (skb->len + CTRL_SIZE + sizeof(struct mlx4_wqe_inline_seg)
+ <= MLX4_INLINE_ALIGN)
+ return ALIGN(skb->len + CTRL_SIZE +
+ sizeof(struct mlx4_wqe_inline_seg), 16);
+ else
+ return ALIGN(skb->len + CTRL_SIZE + 2 *
+ sizeof(struct mlx4_wqe_inline_seg), 16);
+}
+
+static int get_real_size(struct sk_buff *skb, struct net_device *dev,
+ int *lso_header_size)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ int real_size;
+
+ if (skb_is_gso(skb)) {
+ *lso_header_size = skb_transport_offset(skb) + tcp_hdrlen(skb);
+ real_size = CTRL_SIZE + skb_shinfo(skb)->nr_frags * DS_SIZE +
+ ALIGN(*lso_header_size + 4, DS_SIZE);
+ if (unlikely(*lso_header_size != skb_headlen(skb))) {
+ /* We add a segment for the skb linear buffer only if
+ * it contains data */
+ if (*lso_header_size < skb_headlen(skb))
+ real_size += DS_SIZE;
+ else {
+ if (netif_msg_tx_err(priv))
+ mlx4_warn(mdev, "Non-linear headers\n");
+ dev_kfree_skb_any(skb);
+ return 0;
+ }
+ }
+ if (unlikely(*lso_header_size > MAX_LSO_HDR_SIZE)) {
+ if (netif_msg_tx_err(priv))
+ mlx4_warn(mdev, "LSO header size too big\n");
+ dev_kfree_skb_any(skb);
+ return 0;
+ }
+ } else {
+ *lso_header_size = 0;
+ if (!is_inline(skb, NULL))
+ real_size = CTRL_SIZE + (skb_shinfo(skb)->nr_frags + 1) * DS_SIZE;
+ else
+ real_size = inline_size(skb);
+ }
+
+ return real_size;
+}
+
+static void build_inline_wqe(struct mlx4_en_tx_desc *tx_desc, struct sk_buff *skb,
+ int real_size, u16 *vlan_tag, int tx_ind, void *fragptr)
+{
+ struct mlx4_wqe_inline_seg *inl = &tx_desc->inl;
+ int spc = MLX4_INLINE_ALIGN - CTRL_SIZE - sizeof *inl;
+
+ if (skb->len <= spc) {
+ inl->byte_count = cpu_to_be32(1 << 31 | skb->len);
+ skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
+ if (skb_shinfo(skb)->nr_frags)
+ memcpy(((void *)(inl + 1)) + skb_headlen(skb), fragptr,
+ skb_shinfo(skb)->frags[0].size);
+
+ } else {
+ inl->byte_count = cpu_to_be32(1 << 31 | spc);
+ if (skb_headlen(skb) <= spc) {
+ skb_copy_from_linear_data(skb, inl + 1, skb_headlen(skb));
+ if (skb_headlen(skb) < spc) {
+ memcpy(((void *)(inl + 1)) + skb_headlen(skb),
+ fragptr, spc - skb_headlen(skb));
+ fragptr += spc - skb_headlen(skb);
+ }
+ inl = (void *) (inl + 1) + spc;
+ memcpy(((void *)(inl + 1)), fragptr, skb->len - spc);
+ } else {
+ skb_copy_from_linear_data(skb, inl + 1, spc);
+ inl = (void *) (inl + 1) + spc;
+ skb_copy_from_linear_data_offset(skb, spc, inl + 1,
+ skb_headlen(skb) - spc);
+ if (skb_shinfo(skb)->nr_frags)
+ memcpy(((void *)(inl + 1)) + skb_headlen(skb) - spc,
+ fragptr, skb_shinfo(skb)->frags[0].size);
+ }
+
+ wmb();
+ inl->byte_count = cpu_to_be32(1 << 31 | (skb->len - spc));
+ }
+ tx_desc->ctrl.vlan_tag = cpu_to_be16(*vlan_tag);
+ tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_VLAN * !!(*vlan_tag);
+ tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f;
+}
+
+static int get_vlan_info(struct mlx4_en_priv *priv, struct sk_buff *skb,
+ u16 *vlan_tag)
+{
+ int tx_ind;
+
+ /* Obtain VLAN information if present */
+ if (priv->vlgrp && vlan_tx_tag_present(skb)) {
+ *vlan_tag = vlan_tx_tag_get(skb);
+ /* Set the Tx ring to use according to vlan priority */
+ tx_ind = priv->tx_prio_map[*vlan_tag >> 13];
+ } else {
+ *vlan_tag = 0;
+ tx_ind = 0;
+ }
+ return tx_ind;
+}
+
+int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct mlx4_en_priv *priv = netdev_priv(dev);
+ struct mlx4_en_dev *mdev = priv->mdev;
+ struct mlx4_en_tx_ring *ring;
+ struct mlx4_en_cq *cq;
+ struct mlx4_en_tx_desc *tx_desc;
+ struct mlx4_wqe_data_seg *data;
+ struct skb_frag_struct *frag;
+ struct mlx4_en_tx_info *tx_info;
+ int tx_ind = 0;
+ int nr_txbb;
+ int desc_size;
+ int real_size;
+ dma_addr_t dma;
+ u32 index;
+ __be32 op_own;
+ u16 vlan_tag;
+ int i;
+ int lso_header_size;
+ void *fragptr;
+
+ if (unlikely(!skb->len)) {
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ real_size = get_real_size(skb, dev, &lso_header_size);
+ if (unlikely(!real_size))
+ return NETDEV_TX_OK;
+
+ /* Allign descriptor to TXBB size */
+ desc_size = ALIGN(real_size, TXBB_SIZE);
+ nr_txbb = desc_size / TXBB_SIZE;
+ if (unlikely(nr_txbb > MAX_DESC_TXBBS)) {
+ if (netif_msg_tx_err(priv))
+ mlx4_warn(mdev, "Oversized header or SG list\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ tx_ind = get_vlan_info(priv, skb, &vlan_tag);
+ ring = &priv->tx_ring[tx_ind];
+
+ /* Check available TXBBs And 2K spare for prefetch */
+ if (unlikely(((int)(ring->prod - ring->cons)) >
+ ring->size - HEADROOM - MAX_DESC_TXBBS)) {
+ /* every full Tx ring stops queue.
+ * TODO: implement multi-queue support (per-queue stop) */
+ netif_stop_queue(dev);
+ ring->blocked = 1;
+ priv->port_stats.queue_stopped++;
+
+ /* Use interrupts to find out when queue opened */
+ cq = &priv->tx_cq[tx_ind];
+ mlx4_en_arm_cq(priv, cq);
+ return NETDEV_TX_BUSY;
+ }
+
+ /* Now that we know what Tx ring to use */
+ if (unlikely(!priv->port_up)) {
+ if (netif_msg_tx_err(priv))
+ mlx4_warn(mdev, "xmit: port down!\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+
+ /* Track current inflight packets for performance analysis */
+ AVG_PERF_COUNTER(priv->pstats.inflight_avg,
+ (u32) (ring->prod - ring->cons - 1));
+
+ /* Packet is good - grab an index and transmit it */
+ index = ring->prod & ring->size_mask;
+
+ /* See if we have enough space for whole descriptor TXBB for setting
+ * SW ownership on next descriptor; if not, use a bounce buffer. */
+ if (likely(index + nr_txbb <= ring->size))
+ tx_desc = ring->buf + index * TXBB_SIZE;
+ else
+ tx_desc = (struct mlx4_en_tx_desc *) ring->bounce_buf;
+
+ /* Save skb in tx_info ring */
+ tx_info = &ring->tx_info[index];
+ tx_info->skb = skb;
+ tx_info->nr_txbb = nr_txbb;
+
+ /* Prepare ctrl segement apart opcode+ownership, which depends on
+ * whether LSO is used */
+ tx_desc->ctrl.vlan_tag = cpu_to_be16(vlan_tag);
+ tx_desc->ctrl.ins_vlan = MLX4_WQE_CTRL_INS_VLAN * !!vlan_tag;
+ tx_desc->ctrl.fence_size = (real_size / 16) & 0x3f;
+ tx_desc->ctrl.srcrb_flags = cpu_to_be32(MLX4_WQE_CTRL_CQ_UPDATE |
+ MLX4_WQE_CTRL_SOLICITED);
+ if (likely(skb->ip_summed == CHECKSUM_PARTIAL)) {
+ tx_desc->ctrl.srcrb_flags |= cpu_to_be32(MLX4_WQE_CTRL_IP_CSUM |
+ MLX4_WQE_CTRL_TCP_UDP_CSUM);
+ priv->port_stats.tx_chksum_offload++;
+ }
+
+ /* Handle LSO (TSO) packets */
+ if (lso_header_size) {
+ /* Mark opcode as LSO */
+ op_own = cpu_to_be32(MLX4_OPCODE_LSO | (1 << 6)) |
+ ((ring->prod & ring->size) ?
+ cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
+
+ /* Fill in the LSO prefix */
+ tx_desc->lso.mss_hdr_size = cpu_to_be32(
+ skb_shinfo(skb)->gso_size << 16 | lso_header_size);
+
+ /* Copy headers;
+ * note that we already verified that it is linear */
+ memcpy(tx_desc->lso.header, skb->data, lso_header_size);
+ data = ((void *) &tx_desc->lso +
+ ALIGN(lso_header_size + 4, DS_SIZE));
+
+ priv->port_stats.tso_packets++;
+ i = ((skb->len - lso_header_size) / skb_shinfo(skb)->gso_size) +
+ !!((skb->len - lso_header_size) % skb_shinfo(skb)->gso_size);
+ ring->bytes += skb->len + (i - 1) * lso_header_size;
+ ring->packets += i;
+ } else {
+ /* Normal (Non LSO) packet */
+ op_own = cpu_to_be32(MLX4_OPCODE_SEND) |
+ ((ring->prod & ring->size) ?
+ cpu_to_be32(MLX4_EN_BIT_DESC_OWN) : 0);
+ data = &tx_desc->data;
+ ring->bytes += max(skb->len, (unsigned int) ETH_ZLEN);
+ ring->packets++;
+
+ }
+ AVG_PERF_COUNTER(priv->pstats.tx_pktsz_avg, skb->len);
+
+
+ /* valid only for none inline segments */
+ tx_info->data_offset = (void *) data - (void *) tx_desc;
+
+ tx_info->linear = (lso_header_size < skb_headlen(skb) && !is_inline(skb, NULL)) ? 1 : 0;
+ data += skb_shinfo(skb)->nr_frags + tx_info->linear - 1;
+
+ if (!is_inline(skb, &fragptr)) {
+ /* Map fragments */
+ for (i = skb_shinfo(skb)->nr_frags - 1; i >= 0; i--) {
+ frag = &skb_shinfo(skb)->frags[i];
+ dma = pci_map_page(mdev->dev->pdev, frag->page, frag->page_offset,
+ frag->size, PCI_DMA_TODEVICE);
+ data->addr = cpu_to_be64(dma);
+ data->lkey = cpu_to_be32(mdev->mr.key);
+ wmb();
+ data->byte_count = cpu_to_be32(frag->size);
+ --data;
+ }
+
+ /* Map linear part */
+ if (tx_info->linear) {
+ dma = pci_map_single(mdev->dev->pdev, skb->data + lso_header_size,
+ skb_headlen(skb) - lso_header_size, PCI_DMA_TODEVICE);
+ data->addr = cpu_to_be64(dma);
+ data->lkey = cpu_to_be32(mdev->mr.key);
+ wmb();
+ data->byte_count = cpu_to_be32(skb_headlen(skb) - lso_header_size);
+ }
+ } else
+ build_inline_wqe(tx_desc, skb, real_size, &vlan_tag, tx_ind, fragptr);
+
+ ring->prod += nr_txbb;
+
+ /* If we used a bounce buffer then copy descriptor back into place */
+ if (tx_desc == (struct mlx4_en_tx_desc *) ring->bounce_buf)
+ tx_desc = mlx4_en_bounce_to_desc(priv, ring, index, desc_size);
+
+ /* Run destructor before passing skb to HW */
+ if (likely(!skb_shared(skb)))
+ skb_orphan(skb);
+
+ /* Ensure new descirptor hits memory
+ * before setting ownership of this descriptor to HW */
+ wmb();
+ tx_desc->ctrl.owner_opcode = op_own;
+
+ /* Ring doorbell! */
+ wmb();
+ writel(ring->doorbell_qpn, mdev->uar_map + MLX4_SEND_DOORBELL);
+ dev->trans_start = jiffies;
+
+ /* Poll CQ here */
+ mlx4_en_xmit_poll(priv, tx_ind);
+
+ return 0;
+}
+
int i;
err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs,
- dev->caps.num_eqs - 1, dev->caps.reserved_eqs);
+ dev->caps.num_eqs - 1, dev->caps.reserved_eqs, 0);
if (err)
return err;
[ 8] = "P_Key violation counter",
[ 9] = "Q_Key violation counter",
[10] = "VMM",
+ [12] = "DPDP",
[16] = "MW support",
[17] = "APM support",
[18] = "Atomic ops support",
MLX4_GET(field, outbox, QUERY_DEV_CAP_VL_PORT_OFFSET);
dev_cap->max_vl[i] = field >> 4;
MLX4_GET(field, outbox, QUERY_DEV_CAP_MTU_WIDTH_OFFSET);
- dev_cap->max_mtu[i] = field >> 4;
+ dev_cap->ib_mtu[i] = field >> 4;
dev_cap->max_port_width[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_DEV_CAP_MAX_GID_OFFSET);
dev_cap->max_gids[i] = 1 << (field & 0xf);
dev_cap->max_pkeys[i] = 1 << (field & 0xf);
}
} else {
+#define QUERY_PORT_SUPPORTED_TYPE_OFFSET 0x00
#define QUERY_PORT_MTU_OFFSET 0x01
+#define QUERY_PORT_ETH_MTU_OFFSET 0x02
#define QUERY_PORT_WIDTH_OFFSET 0x06
#define QUERY_PORT_MAX_GID_PKEY_OFFSET 0x07
+#define QUERY_PORT_MAC_OFFSET 0x08
+#define QUERY_PORT_MAX_MACVLAN_OFFSET 0x0a
#define QUERY_PORT_MAX_VL_OFFSET 0x0b
for (i = 1; i <= dev_cap->num_ports; ++i) {
if (err)
goto out;
+ MLX4_GET(field, outbox, QUERY_PORT_SUPPORTED_TYPE_OFFSET);
+ dev_cap->supported_port_types[i] = field & 3;
MLX4_GET(field, outbox, QUERY_PORT_MTU_OFFSET);
- dev_cap->max_mtu[i] = field & 0xf;
+ dev_cap->ib_mtu[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_PORT_WIDTH_OFFSET);
dev_cap->max_port_width[i] = field & 0xf;
MLX4_GET(field, outbox, QUERY_PORT_MAX_GID_PKEY_OFFSET);
dev_cap->max_pkeys[i] = 1 << (field & 0xf);
MLX4_GET(field, outbox, QUERY_PORT_MAX_VL_OFFSET);
dev_cap->max_vl[i] = field & 0xf;
+ MLX4_GET(field, outbox, QUERY_PORT_MAX_MACVLAN_OFFSET);
+ dev_cap->log_max_macs[i] = field & 0xf;
+ dev_cap->log_max_vlans[i] = field >> 4;
+ MLX4_GET(dev_cap->eth_mtu[i], outbox, QUERY_PORT_ETH_MTU_OFFSET);
+ MLX4_GET(dev_cap->def_mac[i], outbox, QUERY_PORT_MAC_OFFSET);
}
}
mlx4_dbg(dev, "Max CQEs: %d, max WQEs: %d, max SRQ WQEs: %d\n",
dev_cap->max_cq_sz, dev_cap->max_qp_sz, dev_cap->max_srq_sz);
mlx4_dbg(dev, "Local CA ACK delay: %d, max MTU: %d, port width cap: %d\n",
- dev_cap->local_ca_ack_delay, 128 << dev_cap->max_mtu[1],
+ dev_cap->local_ca_ack_delay, 128 << dev_cap->ib_mtu[1],
dev_cap->max_port_width[1]);
mlx4_dbg(dev, "Max SQ desc size: %d, max SQ S/G: %d\n",
dev_cap->max_sq_desc_sz, dev_cap->max_sq_sg);
flags |= (dev->caps.port_width_cap[port] & 0xf) << INIT_PORT_PORT_WIDTH_SHIFT;
MLX4_PUT(inbox, flags, INIT_PORT_FLAGS_OFFSET);
- field = 128 << dev->caps.mtu_cap[port];
+ field = 128 << dev->caps.ib_mtu_cap[port];
MLX4_PUT(inbox, field, INIT_PORT_MTU_OFFSET);
field = dev->caps.gid_table_len[port];
MLX4_PUT(inbox, field, INIT_PORT_MAX_GID_OFFSET);
int local_ca_ack_delay;
int num_ports;
u32 max_msg_sz;
- int max_mtu[MLX4_MAX_PORTS + 1];
+ int ib_mtu[MLX4_MAX_PORTS + 1];
int max_port_width[MLX4_MAX_PORTS + 1];
int max_vl[MLX4_MAX_PORTS + 1];
int max_gids[MLX4_MAX_PORTS + 1];
int max_pkeys[MLX4_MAX_PORTS + 1];
+ u64 def_mac[MLX4_MAX_PORTS + 1];
+ u16 eth_mtu[MLX4_MAX_PORTS + 1];
u16 stat_rate_support;
u32 flags;
int reserved_uars;
u32 reserved_lkey;
u64 max_icm_sz;
int max_gso_sz;
+ u8 supported_port_types[MLX4_MAX_PORTS + 1];
+ u8 log_max_macs[MLX4_MAX_PORTS + 1];
+ u8 log_max_vlans[MLX4_MAX_PORTS + 1];
};
struct mlx4_adapter {
.num_mtt = 1 << 20,
};
+static int log_num_mac = 2;
+module_param_named(log_num_mac, log_num_mac, int, 0444);
+MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)");
+
+static int log_num_vlan;
+module_param_named(log_num_vlan, log_num_vlan, int, 0444);
+MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)");
+
+static int use_prio;
+module_param_named(use_prio, use_prio, bool, 0444);
+MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports "
+ "(0/1, default 0)");
+
+static int mlx4_check_port_params(struct mlx4_dev *dev,
+ enum mlx4_port_type *port_type)
+{
+ int i;
+
+ for (i = 0; i < dev->caps.num_ports - 1; i++) {
+ if (port_type[i] != port_type[i+1] &&
+ !(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) {
+ mlx4_err(dev, "Only same port types supported "
+ "on this HCA, aborting.\n");
+ return -EINVAL;
+ }
+ }
+ if ((port_type[0] == MLX4_PORT_TYPE_ETH) &&
+ (port_type[1] == MLX4_PORT_TYPE_IB)) {
+ mlx4_err(dev, "eth-ib configuration is not supported.\n");
+ return -EINVAL;
+ }
+
+ for (i = 0; i < dev->caps.num_ports; i++) {
+ if (!(port_type[i] & dev->caps.supported_type[i+1])) {
+ mlx4_err(dev, "Requested port type for port %d is not "
+ "supported on this HCA\n", i + 1);
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static void mlx4_set_port_mask(struct mlx4_dev *dev)
+{
+ int i;
+
+ dev->caps.port_mask = 0;
+ for (i = 1; i <= dev->caps.num_ports; ++i)
+ if (dev->caps.port_type[i] == MLX4_PORT_TYPE_IB)
+ dev->caps.port_mask |= 1 << (i - 1);
+}
static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap)
{
int err;
dev->caps.num_ports = dev_cap->num_ports;
for (i = 1; i <= dev->caps.num_ports; ++i) {
dev->caps.vl_cap[i] = dev_cap->max_vl[i];
- dev->caps.mtu_cap[i] = dev_cap->max_mtu[i];
+ dev->caps.ib_mtu_cap[i] = dev_cap->ib_mtu[i];
dev->caps.gid_table_len[i] = dev_cap->max_gids[i];
dev->caps.pkey_table_len[i] = dev_cap->max_pkeys[i];
dev->caps.port_width_cap[i] = dev_cap->max_port_width[i];
+ dev->caps.eth_mtu_cap[i] = dev_cap->eth_mtu[i];
+ dev->caps.def_mac[i] = dev_cap->def_mac[i];
+ dev->caps.supported_type[i] = dev_cap->supported_port_types[i];
}
dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE;
dev->caps.max_rq_sg = dev_cap->max_rq_sg;
dev->caps.max_wqes = dev_cap->max_qp_sz;
dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp;
- dev->caps.reserved_qps = dev_cap->reserved_qps;
dev->caps.max_srq_wqes = dev_cap->max_srq_sz;
dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1;
dev->caps.reserved_srqs = dev_cap->reserved_srqs;
dev->caps.stat_rate_support = dev_cap->stat_rate_support;
dev->caps.max_gso_sz = dev_cap->max_gso_sz;
+ dev->caps.log_num_macs = log_num_mac;
+ dev->caps.log_num_vlans = log_num_vlan;
+ dev->caps.log_num_prios = use_prio ? 3 : 0;
+
+ for (i = 1; i <= dev->caps.num_ports; ++i) {
+ if (dev->caps.supported_type[i] != MLX4_PORT_TYPE_ETH)
+ dev->caps.port_type[i] = MLX4_PORT_TYPE_IB;
+ else
+ dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH;
+
+ if (dev->caps.log_num_macs > dev_cap->log_max_macs[i]) {
+ dev->caps.log_num_macs = dev_cap->log_max_macs[i];
+ mlx4_warn(dev, "Requested number of MACs is too much "
+ "for port %d, reducing to %d.\n",
+ i, 1 << dev->caps.log_num_macs);
+ }
+ if (dev->caps.log_num_vlans > dev_cap->log_max_vlans[i]) {
+ dev->caps.log_num_vlans = dev_cap->log_max_vlans[i];
+ mlx4_warn(dev, "Requested number of VLANs is too much "
+ "for port %d, reducing to %d.\n",
+ i, 1 << dev->caps.log_num_vlans);
+ }
+ }
+
+ mlx4_set_port_mask(dev);
+
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps;
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] =
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] =
+ (1 << dev->caps.log_num_macs) *
+ (1 << dev->caps.log_num_vlans) *
+ (1 << dev->caps.log_num_prios) *
+ dev->caps.num_ports;
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH;
+
+ dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] +
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] +
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] +
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH];
+
return 0;
}
+/*
+ * Change the port configuration of the device.
+ * Every user of this function must hold the port mutex.
+ */
+static int mlx4_change_port_types(struct mlx4_dev *dev,
+ enum mlx4_port_type *port_types)
+{
+ int err = 0;
+ int change = 0;
+ int port;
+
+ for (port = 0; port < dev->caps.num_ports; port++) {
+ if (port_types[port] != dev->caps.port_type[port + 1]) {
+ change = 1;
+ dev->caps.port_type[port + 1] = port_types[port];
+ }
+ }
+ if (change) {
+ mlx4_unregister_device(dev);
+ for (port = 1; port <= dev->caps.num_ports; port++) {
+ mlx4_CLOSE_PORT(dev, port);
+ err = mlx4_SET_PORT(dev, port);
+ if (err) {
+ mlx4_err(dev, "Failed to set port %d, "
+ "aborting\n", port);
+ goto out;
+ }
+ }
+ mlx4_set_port_mask(dev);
+ err = mlx4_register_device(dev);
+ }
+
+out:
+ return err;
+}
+
+static ssize_t show_port_type(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
+ port_attr);
+ struct mlx4_dev *mdev = info->dev;
+
+ return sprintf(buf, "%s\n",
+ mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB ?
+ "ib" : "eth");
+}
+
+static ssize_t set_port_type(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info,
+ port_attr);
+ struct mlx4_dev *mdev = info->dev;
+ struct mlx4_priv *priv = mlx4_priv(mdev);
+ enum mlx4_port_type types[MLX4_MAX_PORTS];
+ int i;
+ int err = 0;
+
+ if (!strcmp(buf, "ib\n"))
+ info->tmp_type = MLX4_PORT_TYPE_IB;
+ else if (!strcmp(buf, "eth\n"))
+ info->tmp_type = MLX4_PORT_TYPE_ETH;
+ else {
+ mlx4_err(mdev, "%s is not supported port type\n", buf);
+ return -EINVAL;
+ }
+
+ mutex_lock(&priv->port_mutex);
+ for (i = 0; i < mdev->caps.num_ports; i++)
+ types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type :
+ mdev->caps.port_type[i+1];
+
+ err = mlx4_check_port_params(mdev, types);
+ if (err)
+ goto out;
+
+ for (i = 1; i <= mdev->caps.num_ports; i++)
+ priv->port[i].tmp_type = 0;
+
+ err = mlx4_change_port_types(mdev, types);
+
+out:
+ mutex_unlock(&priv->port_mutex);
+ return err ? err : count;
+}
+
static int mlx4_load_fw(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
((u64) (MLX4_CMPT_TYPE_QP *
cmpt_entry_sz) << MLX4_CMPT_SHIFT),
cmpt_entry_sz, dev->caps.num_qps,
- dev->caps.reserved_qps, 0, 0);
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+ 0, 0);
if (err)
goto err;
init_hca->qpc_base,
dev_cap->qpc_entry_sz,
dev->caps.num_qps,
- dev->caps.reserved_qps, 0, 0);
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+ 0, 0);
if (err) {
mlx4_err(dev, "Failed to map QP context memory, aborting.\n");
goto err_unmap_dmpt;
init_hca->auxc_base,
dev_cap->aux_entry_sz,
dev->caps.num_qps,
- dev->caps.reserved_qps, 0, 0);
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+ 0, 0);
if (err) {
mlx4_err(dev, "Failed to map AUXC context memory, aborting.\n");
goto err_unmap_qp;
init_hca->altc_base,
dev_cap->altc_entry_sz,
dev->caps.num_qps,
- dev->caps.reserved_qps, 0, 0);
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+ 0, 0);
if (err) {
mlx4_err(dev, "Failed to map ALTC context memory, aborting.\n");
goto err_unmap_auxc;
init_hca->rdmarc_base,
dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift,
dev->caps.num_qps,
- dev->caps.reserved_qps, 0, 0);
+ dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW],
+ 0, 0);
if (err) {
mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n");
goto err_unmap_altc;
{
struct mlx4_priv *priv = mlx4_priv(dev);
int err;
+ int port;
err = mlx4_init_uar_table(dev);
if (err) {
goto err_qp_table_free;
}
+ for (port = 1; port <= dev->caps.num_ports; port++) {
+ err = mlx4_SET_PORT(dev, port);
+ if (err) {
+ mlx4_err(dev, "Failed to set port %d, aborting\n",
+ port);
+ goto err_mcg_table_free;
+ }
+ }
+
return 0;
+err_mcg_table_free:
+ mlx4_cleanup_mcg_table(dev);
+
err_qp_table_free:
mlx4_cleanup_qp_table(dev);
priv->eq_table.eq[i].irq = dev->pdev->irq;
}
+static int mlx4_init_port_info(struct mlx4_dev *dev, int port)
+{
+ struct mlx4_port_info *info = &mlx4_priv(dev)->port[port];
+ int err = 0;
+
+ info->dev = dev;
+ info->port = port;
+ mlx4_init_mac_table(dev, &info->mac_table);
+ mlx4_init_vlan_table(dev, &info->vlan_table);
+
+ sprintf(info->dev_name, "mlx4_port%d", port);
+ info->port_attr.attr.name = info->dev_name;
+ info->port_attr.attr.mode = S_IRUGO | S_IWUSR;
+ info->port_attr.show = show_port_type;
+ info->port_attr.store = set_port_type;
+
+ err = device_create_file(&dev->pdev->dev, &info->port_attr);
+ if (err) {
+ mlx4_err(dev, "Failed to create file for port %d\n", port);
+ info->port = -1;
+ }
+
+ return err;
+}
+
+static void mlx4_cleanup_port_info(struct mlx4_port_info *info)
+{
+ if (info->port < 0)
+ return;
+
+ device_remove_file(&info->dev->pdev->dev, &info->port_attr);
+}
+
static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
struct mlx4_priv *priv;
struct mlx4_dev *dev;
int err;
+ int port;
printk(KERN_INFO PFX "Initializing %s\n",
pci_name(pdev));
INIT_LIST_HEAD(&priv->ctx_list);
spin_lock_init(&priv->ctx_lock);
+ mutex_init(&priv->port_mutex);
+
INIT_LIST_HEAD(&priv->pgdir_list);
mutex_init(&priv->pgdir_mutex);
if (err)
goto err_close;
+ for (port = 1; port <= dev->caps.num_ports; port++) {
+ err = mlx4_init_port_info(dev, port);
+ if (err)
+ goto err_port;
+ }
+
err = mlx4_register_device(dev);
if (err)
- goto err_cleanup;
+ goto err_port;
pci_set_drvdata(pdev, dev);
return 0;
-err_cleanup:
+err_port:
+ for (port = 1; port <= dev->caps.num_ports; port++)
+ mlx4_cleanup_port_info(&priv->port[port]);
+
mlx4_cleanup_mcg_table(dev);
mlx4_cleanup_qp_table(dev);
mlx4_cleanup_srq_table(dev);
if (dev) {
mlx4_unregister_device(dev);
- for (p = 1; p <= dev->caps.num_ports; ++p)
+ for (p = 1; p <= dev->caps.num_ports; p++) {
+ mlx4_cleanup_port_info(&priv->port[p]);
mlx4_CLOSE_PORT(dev, p);
+ }
mlx4_cleanup_mcg_table(dev);
mlx4_cleanup_qp_table(dev);
{ PCI_VDEVICE(MELLANOX, 0x6354) }, /* MT25408 "Hermon" QDR */
{ PCI_VDEVICE(MELLANOX, 0x6732) }, /* MT25408 "Hermon" DDR PCIe gen2 */
{ PCI_VDEVICE(MELLANOX, 0x673c) }, /* MT25408 "Hermon" QDR PCIe gen2 */
+ { PCI_VDEVICE(MELLANOX, 0x6368) }, /* MT25408 "Hermon" EN 10GigE */
+ { PCI_VDEVICE(MELLANOX, 0x6750) }, /* MT25408 "Hermon" EN 10GigE PCIe gen2 */
{ 0, }
};
.remove = __devexit_p(mlx4_remove_one)
};
+static int __init mlx4_verify_params(void)
+{
+ if ((log_num_mac < 0) || (log_num_mac > 7)) {
+ printk(KERN_WARNING "mlx4_core: bad num_mac: %d\n", log_num_mac);
+ return -1;
+ }
+
+ if ((log_num_vlan < 0) || (log_num_vlan > 7)) {
+ printk(KERN_WARNING "mlx4_core: bad num_vlan: %d\n", log_num_vlan);
+ return -1;
+ }
+
+ return 0;
+}
+
static int __init mlx4_init(void)
{
int ret;
+ if (mlx4_verify_params())
+ return -EINVAL;
+
ret = mlx4_catas_init();
if (ret)
return ret;
struct mlx4_priv *priv = mlx4_priv(dev);
int err;
- err = mlx4_bitmap_init(&priv->mcg_table.bitmap,
- dev->caps.num_amgms, dev->caps.num_amgms - 1, 0);
+ err = mlx4_bitmap_init(&priv->mcg_table.bitmap, dev->caps.num_amgms,
+ dev->caps.num_amgms - 1, 0, 0);
if (err)
return err;
u32 last;
u32 top;
u32 max;
+ u32 reserved_top;
u32 mask;
spinlock_t lock;
unsigned long *table;
struct list_head list;
};
+#define MLX4_MAX_MAC_NUM 128
+#define MLX4_MAC_TABLE_SIZE (MLX4_MAX_MAC_NUM << 3)
+
+struct mlx4_mac_table {
+ __be64 entries[MLX4_MAX_MAC_NUM];
+ int refs[MLX4_MAX_MAC_NUM];
+ struct mutex mutex;
+ int total;
+ int max;
+};
+
+#define MLX4_MAX_VLAN_NUM 128
+#define MLX4_VLAN_TABLE_SIZE (MLX4_MAX_VLAN_NUM << 2)
+
+struct mlx4_vlan_table {
+ __be32 entries[MLX4_MAX_VLAN_NUM];
+ int refs[MLX4_MAX_VLAN_NUM];
+ struct mutex mutex;
+ int total;
+ int max;
+};
+
+struct mlx4_port_info {
+ struct mlx4_dev *dev;
+ int port;
+ char dev_name[16];
+ struct device_attribute port_attr;
+ enum mlx4_port_type tmp_type;
+ struct mlx4_mac_table mac_table;
+ struct mlx4_vlan_table vlan_table;
+};
+
struct mlx4_priv {
struct mlx4_dev dev;
struct mlx4_uar driver_uar;
void __iomem *kar;
+ struct mlx4_port_info port[MLX4_MAX_PORTS + 1];
+ struct mutex port_mutex;
};
static inline struct mlx4_priv *mlx4_priv(struct mlx4_dev *dev)
u32 mlx4_bitmap_alloc(struct mlx4_bitmap *bitmap);
void mlx4_bitmap_free(struct mlx4_bitmap *bitmap, u32 obj);
-int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask, u32 reserved);
+u32 mlx4_bitmap_alloc_range(struct mlx4_bitmap *bitmap, int cnt, int align);
+void mlx4_bitmap_free_range(struct mlx4_bitmap *bitmap, u32 obj, int cnt);
+int mlx4_bitmap_init(struct mlx4_bitmap *bitmap, u32 num, u32 mask,
+ u32 reserved_bot, u32 resetrved_top);
void mlx4_bitmap_cleanup(struct mlx4_bitmap *bitmap);
int mlx4_reset(struct mlx4_dev *dev);
void mlx4_handle_catas_err(struct mlx4_dev *dev);
+void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table);
+void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table);
+
+int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port);
+
#endif /* MLX4_H */
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef _MLX4_EN_H_
+#define _MLX4_EN_H_
+
+#include <linux/compiler.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/netdevice.h>
+#include <linux/inet_lro.h>
+
+#include <linux/mlx4/device.h>
+#include <linux/mlx4/qp.h>
+#include <linux/mlx4/cq.h>
+#include <linux/mlx4/srq.h>
+#include <linux/mlx4/doorbell.h>
+
+#include "en_port.h"
+
+#define DRV_NAME "mlx4_en"
+#define DRV_VERSION "1.4.0"
+#define DRV_RELDATE "Sep 2008"
+
+
+#define MLX4_EN_MSG_LEVEL (NETIF_MSG_LINK | NETIF_MSG_IFDOWN)
+
+#define mlx4_dbg(mlevel, priv, format, arg...) \
+ if (NETIF_MSG_##mlevel & priv->msg_enable) \
+ printk(KERN_DEBUG "%s %s: " format , DRV_NAME ,\
+ (&priv->mdev->pdev->dev)->bus_id , ## arg)
+
+#define mlx4_err(mdev, format, arg...) \
+ printk(KERN_ERR "%s %s: " format , DRV_NAME ,\
+ (&mdev->pdev->dev)->bus_id , ## arg)
+#define mlx4_info(mdev, format, arg...) \
+ printk(KERN_INFO "%s %s: " format , DRV_NAME ,\
+ (&mdev->pdev->dev)->bus_id , ## arg)
+#define mlx4_warn(mdev, format, arg...) \
+ printk(KERN_WARNING "%s %s: " format , DRV_NAME ,\
+ (&mdev->pdev->dev)->bus_id , ## arg)
+
+/*
+ * Device constants
+ */
+
+
+#define MLX4_EN_PAGE_SHIFT 12
+#define MLX4_EN_PAGE_SIZE (1 << MLX4_EN_PAGE_SHIFT)
+#define MAX_TX_RINGS 16
+#define MAX_RX_RINGS 16
+#define MAX_RSS_MAP_SIZE 64
+#define RSS_FACTOR 2
+#define TXBB_SIZE 64
+#define HEADROOM (2048 / TXBB_SIZE + 1)
+#define MAX_LSO_HDR_SIZE 92
+#define STAMP_STRIDE 64
+#define STAMP_DWORDS (STAMP_STRIDE / 4)
+#define STAMP_SHIFT 31
+#define STAMP_VAL 0x7fffffff
+#define STATS_DELAY (HZ / 4)
+
+/* Typical TSO descriptor with 16 gather entries is 352 bytes... */
+#define MAX_DESC_SIZE 512
+#define MAX_DESC_TXBBS (MAX_DESC_SIZE / TXBB_SIZE)
+
+/*
+ * OS related constants and tunables
+ */
+
+#define MLX4_EN_WATCHDOG_TIMEOUT (15 * HZ)
+
+#define MLX4_EN_ALLOC_ORDER 2
+#define MLX4_EN_ALLOC_SIZE (PAGE_SIZE << MLX4_EN_ALLOC_ORDER)
+
+#define MLX4_EN_MAX_LRO_DESCRIPTORS 32
+
+/* Receive fragment sizes; we use at most 4 fragments (for 9600 byte MTU
+ * and 4K allocations) */
+enum {
+ FRAG_SZ0 = 512 - NET_IP_ALIGN,
+ FRAG_SZ1 = 1024,
+ FRAG_SZ2 = 4096,
+ FRAG_SZ3 = MLX4_EN_ALLOC_SIZE
+};
+#define MLX4_EN_MAX_RX_FRAGS 4
+
+/* Minimum ring size for our page-allocation sceme to work */
+#define MLX4_EN_MIN_RX_SIZE (MLX4_EN_ALLOC_SIZE / SMP_CACHE_BYTES)
+#define MLX4_EN_MIN_TX_SIZE (4096 / TXBB_SIZE)
+
+#define MLX4_EN_TX_RING_NUM 9
+#define MLX4_EN_DEF_TX_RING_SIZE 1024
+#define MLX4_EN_DEF_RX_RING_SIZE 1024
+
+/* Target number of bytes to coalesce with interrupt moderation */
+#define MLX4_EN_RX_COAL_TARGET 0x20000
+#define MLX4_EN_RX_COAL_TIME 0x10
+
+#define MLX4_EN_TX_COAL_PKTS 5
+#define MLX4_EN_TX_COAL_TIME 0x80
+
+#define MLX4_EN_RX_RATE_LOW 400000
+#define MLX4_EN_RX_COAL_TIME_LOW 0
+#define MLX4_EN_RX_RATE_HIGH 450000
+#define MLX4_EN_RX_COAL_TIME_HIGH 128
+#define MLX4_EN_RX_SIZE_THRESH 1024
+#define MLX4_EN_RX_RATE_THRESH (1000000 / MLX4_EN_RX_COAL_TIME_HIGH)
+#define MLX4_EN_SAMPLE_INTERVAL 0
+
+#define MLX4_EN_AUTO_CONF 0xffff
+
+#define MLX4_EN_DEF_RX_PAUSE 1
+#define MLX4_EN_DEF_TX_PAUSE 1
+
+/* Interval between sucessive polls in the Tx routine when polling is used
+ instead of interrupts (in per-core Tx rings) - should be power of 2 */
+#define MLX4_EN_TX_POLL_MODER 16
+#define MLX4_EN_TX_POLL_TIMEOUT (HZ / 4)
+
+#define ETH_LLC_SNAP_SIZE 8
+
+#define SMALL_PACKET_SIZE (256 - NET_IP_ALIGN)
+#define HEADER_COPY_SIZE (128 - NET_IP_ALIGN)
+
+#define MLX4_EN_MIN_MTU 46
+#define ETH_BCAST 0xffffffffffffULL
+
+#ifdef MLX4_EN_PERF_STAT
+/* Number of samples to 'average' */
+#define AVG_SIZE 128
+#define AVG_FACTOR 1024
+#define NUM_PERF_STATS NUM_PERF_COUNTERS
+
+#define INC_PERF_COUNTER(cnt) (++(cnt))
+#define ADD_PERF_COUNTER(cnt, add) ((cnt) += (add))
+#define AVG_PERF_COUNTER(cnt, sample) \
+ ((cnt) = ((cnt) * (AVG_SIZE - 1) + (sample) * AVG_FACTOR) / AVG_SIZE)
+#define GET_PERF_COUNTER(cnt) (cnt)
+#define GET_AVG_PERF_COUNTER(cnt) ((cnt) / AVG_FACTOR)
+
+#else
+
+#define NUM_PERF_STATS 0
+#define INC_PERF_COUNTER(cnt) do {} while (0)
+#define ADD_PERF_COUNTER(cnt, add) do {} while (0)
+#define AVG_PERF_COUNTER(cnt, sample) do {} while (0)
+#define GET_PERF_COUNTER(cnt) (0)
+#define GET_AVG_PERF_COUNTER(cnt) (0)
+#endif /* MLX4_EN_PERF_STAT */
+
+/*
+ * Configurables
+ */
+
+enum cq_type {
+ RX = 0,
+ TX = 1,
+};
+
+
+/*
+ * Useful macros
+ */
+#define ROUNDUP_LOG2(x) ilog2(roundup_pow_of_two(x))
+#define XNOR(x, y) (!(x) == !(y))
+#define ILLEGAL_MAC(addr) (addr == 0xffffffffffffULL || addr == 0x0)
+
+
+struct mlx4_en_tx_info {
+ struct sk_buff *skb;
+ u32 nr_txbb;
+ u8 linear;
+ u8 data_offset;
+};
+
+
+#define MLX4_EN_BIT_DESC_OWN 0x80000000
+#define CTRL_SIZE sizeof(struct mlx4_wqe_ctrl_seg)
+#define MLX4_EN_MEMTYPE_PAD 0x100
+#define DS_SIZE sizeof(struct mlx4_wqe_data_seg)
+
+
+struct mlx4_en_tx_desc {
+ struct mlx4_wqe_ctrl_seg ctrl;
+ union {
+ struct mlx4_wqe_data_seg data; /* at least one data segment */
+ struct mlx4_wqe_lso_seg lso;
+ struct mlx4_wqe_inline_seg inl;
+ };
+};
+
+#define MLX4_EN_USE_SRQ 0x01000000
+
+struct mlx4_en_rx_alloc {
+ struct page *page;
+ u16 offset;
+};
+
+struct mlx4_en_tx_ring {
+ struct mlx4_hwq_resources wqres;
+ u32 size ; /* number of TXBBs */
+ u32 size_mask;
+ u16 stride;
+ u16 cqn; /* index of port CQ associated with this ring */
+ u32 prod;
+ u32 cons;
+ u32 buf_size;
+ u32 doorbell_qpn;
+ void *buf;
+ u16 poll_cnt;
+ int blocked;
+ struct mlx4_en_tx_info *tx_info;
+ u8 *bounce_buf;
+ u32 last_nr_txbb;
+ struct mlx4_qp qp;
+ struct mlx4_qp_context context;
+ int qpn;
+ enum mlx4_qp_state qp_state;
+ struct mlx4_srq dummy;
+ unsigned long bytes;
+ unsigned long packets;
+ spinlock_t comp_lock;
+};
+
+struct mlx4_en_rx_desc {
+ struct mlx4_wqe_srq_next_seg next;
+ /* actual number of entries depends on rx ring stride */
+ struct mlx4_wqe_data_seg data[0];
+};
+
+struct mlx4_en_rx_ring {
+ struct mlx4_srq srq;
+ struct mlx4_hwq_resources wqres;
+ struct mlx4_en_rx_alloc page_alloc[MLX4_EN_MAX_RX_FRAGS];
+ struct net_lro_mgr lro;
+ u32 size ; /* number of Rx descs*/
+ u32 actual_size;
+ u32 size_mask;
+ u16 stride;
+ u16 log_stride;
+ u16 cqn; /* index of port CQ associated with this ring */
+ u32 prod;
+ u32 cons;
+ u32 buf_size;
+ int need_refill;
+ int full;
+ void *buf;
+ void *rx_info;
+ unsigned long bytes;
+ unsigned long packets;
+};
+
+
+static inline int mlx4_en_can_lro(__be16 status)
+{
+ return (status & cpu_to_be16(MLX4_CQE_STATUS_IPV4 |
+ MLX4_CQE_STATUS_IPV4F |
+ MLX4_CQE_STATUS_IPV6 |
+ MLX4_CQE_STATUS_IPV4OPT |
+ MLX4_CQE_STATUS_TCP |
+ MLX4_CQE_STATUS_UDP |
+ MLX4_CQE_STATUS_IPOK)) ==
+ cpu_to_be16(MLX4_CQE_STATUS_IPV4 |
+ MLX4_CQE_STATUS_IPOK |
+ MLX4_CQE_STATUS_TCP);
+}
+
+struct mlx4_en_cq {
+ struct mlx4_cq mcq;
+ struct mlx4_hwq_resources wqres;
+ int ring;
+ spinlock_t lock;
+ struct net_device *dev;
+ struct napi_struct napi;
+ /* Per-core Tx cq processing support */
+ struct timer_list timer;
+ int size;
+ int buf_size;
+ unsigned vector;
+ enum cq_type is_tx;
+ u16 moder_time;
+ u16 moder_cnt;
+ int armed;
+ struct mlx4_cqe *buf;
+#define MLX4_EN_OPCODE_ERROR 0x1e
+};
+
+struct mlx4_en_port_profile {
+ u32 flags;
+ u32 tx_ring_num;
+ u32 rx_ring_num;
+ u32 tx_ring_size;
+ u32 rx_ring_size;
+};
+
+struct mlx4_en_profile {
+ int rss_xor;
+ int num_lro;
+ u8 rss_mask;
+ u32 active_ports;
+ u32 small_pkt_int;
+ int rx_moder_cnt;
+ int rx_moder_time;
+ int auto_moder;
+ u8 rx_pause;
+ u8 rx_ppp;
+ u8 tx_pause;
+ u8 tx_ppp;
+ u8 no_reset;
+ struct mlx4_en_port_profile prof[MLX4_MAX_PORTS + 1];
+};
+
+struct mlx4_en_dev {
+ struct mlx4_dev *dev;
+ struct pci_dev *pdev;
+ struct mutex state_lock;
+ struct net_device *pndev[MLX4_MAX_PORTS + 1];
+ u32 port_cnt;
+ bool device_up;
+ struct mlx4_en_profile profile;
+ u32 LSO_support;
+ struct workqueue_struct *workqueue;
+ struct device *dma_device;
+ void __iomem *uar_map;
+ struct mlx4_uar priv_uar;
+ struct mlx4_mr mr;
+ u32 priv_pdn;
+ spinlock_t uar_lock;
+};
+
+
+struct mlx4_en_rss_map {
+ int size;
+ int base_qpn;
+ u16 map[MAX_RSS_MAP_SIZE];
+ struct mlx4_qp qps[MAX_RSS_MAP_SIZE];
+ enum mlx4_qp_state state[MAX_RSS_MAP_SIZE];
+ struct mlx4_qp indir_qp;
+ enum mlx4_qp_state indir_state;
+};
+
+struct mlx4_en_rss_context {
+ __be32 base_qpn;
+ __be32 default_qpn;
+ u16 reserved;
+ u8 hash_fn;
+ u8 flags;
+ __be32 rss_key[10];
+};
+
+struct mlx4_en_pkt_stats {
+ unsigned long broadcast;
+ unsigned long rx_prio[8];
+ unsigned long tx_prio[8];
+#define NUM_PKT_STATS 17
+};
+
+struct mlx4_en_port_stats {
+ unsigned long lro_aggregated;
+ unsigned long lro_flushed;
+ unsigned long lro_no_desc;
+ unsigned long tso_packets;
+ unsigned long queue_stopped;
+ unsigned long wake_queue;
+ unsigned long tx_timeout;
+ unsigned long rx_alloc_failed;
+ unsigned long rx_chksum_good;
+ unsigned long rx_chksum_none;
+ unsigned long tx_chksum_offload;
+#define NUM_PORT_STATS 11
+};
+
+struct mlx4_en_perf_stats {
+ u32 tx_poll;
+ u64 tx_pktsz_avg;
+ u32 inflight_avg;
+ u16 tx_coal_avg;
+ u16 rx_coal_avg;
+ u32 napi_quota;
+#define NUM_PERF_COUNTERS 6
+};
+
+struct mlx4_en_frag_info {
+ u16 frag_size;
+ u16 frag_prefix_size;
+ u16 frag_stride;
+ u16 frag_align;
+ u16 last_offset;
+
+};
+
+struct mlx4_en_priv {
+ struct mlx4_en_dev *mdev;
+ struct mlx4_en_port_profile *prof;
+ struct net_device *dev;
+ struct vlan_group *vlgrp;
+ struct net_device_stats stats;
+ struct net_device_stats ret_stats;
+ spinlock_t stats_lock;
+
+ unsigned long last_moder_packets;
+ unsigned long last_moder_tx_packets;
+ unsigned long last_moder_bytes;
+ unsigned long last_moder_jiffies;
+ int last_moder_time;
+ u16 rx_usecs;
+ u16 rx_frames;
+ u16 tx_usecs;
+ u16 tx_frames;
+ u32 pkt_rate_low;
+ u16 rx_usecs_low;
+ u32 pkt_rate_high;
+ u16 rx_usecs_high;
+ u16 sample_interval;
+ u16 adaptive_rx_coal;
+ u32 msg_enable;
+
+ struct mlx4_hwq_resources res;
+ int link_state;
+ int last_link_state;
+ bool port_up;
+ int port;
+ int registered;
+ int allocated;
+ int stride;
+ int rx_csum;
+ u64 mac;
+ int mac_index;
+ unsigned max_mtu;
+ int base_qpn;
+
+ struct mlx4_en_rss_map rss_map;
+ u16 tx_prio_map[8];
+ u32 flags;
+#define MLX4_EN_FLAG_PROMISC 0x1
+ u32 tx_ring_num;
+ u32 rx_ring_num;
+ u32 rx_skb_size;
+ struct mlx4_en_frag_info frag_info[MLX4_EN_MAX_RX_FRAGS];
+ u16 num_frags;
+ u16 log_rx_info;
+
+ struct mlx4_en_tx_ring tx_ring[MAX_TX_RINGS];
+ struct mlx4_en_rx_ring rx_ring[MAX_RX_RINGS];
+ struct mlx4_en_cq tx_cq[MAX_TX_RINGS];
+ struct mlx4_en_cq rx_cq[MAX_RX_RINGS];
+ struct work_struct mcast_task;
+ struct work_struct mac_task;
+ struct delayed_work refill_task;
+ struct work_struct watchdog_task;
+ struct work_struct linkstate_task;
+ struct delayed_work stats_task;
+ struct mlx4_en_perf_stats pstats;
+ struct mlx4_en_pkt_stats pkstats;
+ struct mlx4_en_port_stats port_stats;
+ struct dev_mc_list *mc_list;
+ struct mlx4_en_stat_out_mbox hw_stats;
+};
+
+
+void mlx4_en_destroy_netdev(struct net_device *dev);
+int mlx4_en_init_netdev(struct mlx4_en_dev *mdev, int port,
+ struct mlx4_en_port_profile *prof);
+
+int mlx4_en_get_profile(struct mlx4_en_dev *mdev);
+
+int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
+ int entries, int ring, enum cq_type mode);
+void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq);
+
+void mlx4_en_poll_tx_cq(unsigned long data);
+void mlx4_en_tx_irq(struct mlx4_cq *mcq);
+int mlx4_en_xmit(struct sk_buff *skb, struct net_device *dev);
+
+int mlx4_en_create_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring,
+ u32 size, u16 stride);
+void mlx4_en_destroy_tx_ring(struct mlx4_en_priv *priv, struct mlx4_en_tx_ring *ring);
+int mlx4_en_activate_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring,
+ int cq, int srqn);
+void mlx4_en_deactivate_tx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_tx_ring *ring);
+
+int mlx4_en_create_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring,
+ u32 size, u16 stride);
+void mlx4_en_destroy_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring);
+int mlx4_en_activate_rx_rings(struct mlx4_en_priv *priv);
+void mlx4_en_deactivate_rx_ring(struct mlx4_en_priv *priv,
+ struct mlx4_en_rx_ring *ring);
+int mlx4_en_process_rx_cq(struct net_device *dev,
+ struct mlx4_en_cq *cq,
+ int budget);
+int mlx4_en_poll_rx_cq(struct napi_struct *napi, int budget);
+void mlx4_en_fill_qp_context(struct mlx4_en_priv *priv, int size, int stride,
+ int is_tx, int rss, int qpn, int cqn, int srqn,
+ struct mlx4_qp_context *context);
+int mlx4_en_map_buffer(struct mlx4_buf *buf);
+void mlx4_en_unmap_buffer(struct mlx4_buf *buf);
+
+void mlx4_en_calc_rx_buf(struct net_device *dev);
+void mlx4_en_set_default_rss_map(struct mlx4_en_priv *priv,
+ struct mlx4_en_rss_map *rss_map,
+ int num_entries, int num_rings);
+void mlx4_en_set_prio_map(struct mlx4_en_priv *priv, u16 *prio_map, u32 ring_num);
+int mlx4_en_config_rss_steer(struct mlx4_en_priv *priv);
+void mlx4_en_release_rss_steer(struct mlx4_en_priv *priv);
+int mlx4_en_free_tx_buf(struct net_device *dev, struct mlx4_en_tx_ring *ring);
+void mlx4_en_rx_refill(struct work_struct *work);
+void mlx4_en_rx_irq(struct mlx4_cq *mcq);
+
+int mlx4_SET_MCAST_FLTR(struct mlx4_dev *dev, u8 port, u64 mac, u64 clear, u8 mode);
+int mlx4_SET_VLAN_FLTR(struct mlx4_dev *dev, u8 port, struct vlan_group *grp);
+int mlx4_SET_PORT_general(struct mlx4_dev *dev, u8 port, int mtu,
+ u8 pptx, u8 pfctx, u8 pprx, u8 pfcrx);
+int mlx4_SET_PORT_qpn_calc(struct mlx4_dev *dev, u8 port, u32 base_qpn,
+ u8 promisc);
+
+int mlx4_en_DUMP_ETH_STATS(struct mlx4_en_dev *mdev, u8 port, u8 reset);
+
+/*
+ * Globals
+ */
+extern const struct ethtool_ops mlx4_en_ethtool_ops;
+#endif
int err;
err = mlx4_bitmap_init(&mr_table->mpt_bitmap, dev->caps.num_mpts,
- ~0, dev->caps.reserved_mrws);
+ ~0, dev->caps.reserved_mrws, 0);
if (err)
return err;
struct mlx4_priv *priv = mlx4_priv(dev);
return mlx4_bitmap_init(&priv->pd_bitmap, dev->caps.num_pds,
- (1 << 24) - 1, dev->caps.reserved_pds);
+ (1 << 24) - 1, dev->caps.reserved_pds, 0);
}
void mlx4_cleanup_pd_table(struct mlx4_dev *dev)
return mlx4_bitmap_init(&mlx4_priv(dev)->uar_table.bitmap,
dev->caps.num_uars, dev->caps.num_uars - 1,
- max(128, dev->caps.reserved_uars));
+ max(128, dev->caps.reserved_uars), 0);
}
void mlx4_cleanup_uar_table(struct mlx4_dev *dev)
--- /dev/null
+/*
+ * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <linux/errno.h>
+#include <linux/if_ether.h>
+
+#include <linux/mlx4/cmd.h>
+
+#include "mlx4.h"
+
+#define MLX4_MAC_VALID (1ull << 63)
+#define MLX4_MAC_MASK 0xffffffffffffULL
+
+#define MLX4_VLAN_VALID (1u << 31)
+#define MLX4_VLAN_MASK 0xfff
+
+void mlx4_init_mac_table(struct mlx4_dev *dev, struct mlx4_mac_table *table)
+{
+ int i;
+
+ mutex_init(&table->mutex);
+ for (i = 0; i < MLX4_MAX_MAC_NUM; i++) {
+ table->entries[i] = 0;
+ table->refs[i] = 0;
+ }
+ table->max = 1 << dev->caps.log_num_macs;
+ table->total = 0;
+}
+
+void mlx4_init_vlan_table(struct mlx4_dev *dev, struct mlx4_vlan_table *table)
+{
+ int i;
+
+ mutex_init(&table->mutex);
+ for (i = 0; i < MLX4_MAX_VLAN_NUM; i++) {
+ table->entries[i] = 0;
+ table->refs[i] = 0;
+ }
+ table->max = 1 << dev->caps.log_num_vlans;
+ table->total = 0;
+}
+
+static int mlx4_set_port_mac_table(struct mlx4_dev *dev, u8 port,
+ __be64 *entries)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ u32 in_mod;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ memcpy(mailbox->buf, entries, MLX4_MAC_TABLE_SIZE);
+
+ in_mod = MLX4_SET_PORT_MAC_TABLE << 8 | port;
+ err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
+
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index)
+{
+ struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+ int i, err = 0;
+ int free = -1;
+
+ mlx4_dbg(dev, "Registering MAC: 0x%llx\n", (unsigned long long) mac);
+ mutex_lock(&table->mutex);
+ for (i = 0; i < MLX4_MAX_MAC_NUM - 1; i++) {
+ if (free < 0 && !table->refs[i]) {
+ free = i;
+ continue;
+ }
+
+ if (mac == (MLX4_MAC_MASK & be64_to_cpu(table->entries[i]))) {
+ /* MAC already registered, increase refernce count */
+ *index = i;
+ ++table->refs[i];
+ goto out;
+ }
+ }
+ mlx4_dbg(dev, "Free MAC index is %d\n", free);
+
+ if (table->total == table->max) {
+ /* No free mac entries */
+ err = -ENOSPC;
+ goto out;
+ }
+
+ /* Register new MAC */
+ table->refs[free] = 1;
+ table->entries[free] = cpu_to_be64(mac | MLX4_MAC_VALID);
+
+ err = mlx4_set_port_mac_table(dev, port, table->entries);
+ if (unlikely(err)) {
+ mlx4_err(dev, "Failed adding MAC: 0x%llx\n", (unsigned long long) mac);
+ table->refs[free] = 0;
+ table->entries[free] = 0;
+ goto out;
+ }
+
+ *index = free;
+ ++table->total;
+out:
+ mutex_unlock(&table->mutex);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_register_mac);
+
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index)
+{
+ struct mlx4_mac_table *table = &mlx4_priv(dev)->port[port].mac_table;
+
+ mutex_lock(&table->mutex);
+ if (!table->refs[index]) {
+ mlx4_warn(dev, "No MAC entry for index %d\n", index);
+ goto out;
+ }
+ if (--table->refs[index]) {
+ mlx4_warn(dev, "Have more references for index %d,"
+ "no need to modify MAC table\n", index);
+ goto out;
+ }
+ table->entries[index] = 0;
+ mlx4_set_port_mac_table(dev, port, table->entries);
+ --table->total;
+out:
+ mutex_unlock(&table->mutex);
+}
+EXPORT_SYMBOL_GPL(mlx4_unregister_mac);
+
+static int mlx4_set_port_vlan_table(struct mlx4_dev *dev, u8 port,
+ __be32 *entries)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ u32 in_mod;
+ int err;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ memcpy(mailbox->buf, entries, MLX4_VLAN_TABLE_SIZE);
+ in_mod = MLX4_SET_PORT_VLAN_TABLE << 8 | port;
+ err = mlx4_cmd(dev, mailbox->dma, in_mod, 1, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+
+ return err;
+}
+
+int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index)
+{
+ struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+ int i, err = 0;
+ int free = -1;
+
+ mutex_lock(&table->mutex);
+ for (i = MLX4_VLAN_REGULAR; i < MLX4_MAX_VLAN_NUM; i++) {
+ if (free < 0 && (table->refs[i] == 0)) {
+ free = i;
+ continue;
+ }
+
+ if (table->refs[i] &&
+ (vlan == (MLX4_VLAN_MASK &
+ be32_to_cpu(table->entries[i])))) {
+ /* Vlan already registered, increase refernce count */
+ *index = i;
+ ++table->refs[i];
+ goto out;
+ }
+ }
+
+ if (table->total == table->max) {
+ /* No free vlan entries */
+ err = -ENOSPC;
+ goto out;
+ }
+
+ /* Register new MAC */
+ table->refs[free] = 1;
+ table->entries[free] = cpu_to_be32(vlan | MLX4_VLAN_VALID);
+
+ err = mlx4_set_port_vlan_table(dev, port, table->entries);
+ if (unlikely(err)) {
+ mlx4_warn(dev, "Failed adding vlan: %u\n", vlan);
+ table->refs[free] = 0;
+ table->entries[free] = 0;
+ goto out;
+ }
+
+ *index = free;
+ ++table->total;
+out:
+ mutex_unlock(&table->mutex);
+ return err;
+}
+EXPORT_SYMBOL_GPL(mlx4_register_vlan);
+
+void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index)
+{
+ struct mlx4_vlan_table *table = &mlx4_priv(dev)->port[port].vlan_table;
+
+ if (index < MLX4_VLAN_REGULAR) {
+ mlx4_warn(dev, "Trying to free special vlan index %d\n", index);
+ return;
+ }
+
+ mutex_lock(&table->mutex);
+ if (!table->refs[index]) {
+ mlx4_warn(dev, "No vlan entry for index %d\n", index);
+ goto out;
+ }
+ if (--table->refs[index]) {
+ mlx4_dbg(dev, "Have more references for index %d,"
+ "no need to modify vlan table\n", index);
+ goto out;
+ }
+ table->entries[index] = 0;
+ mlx4_set_port_vlan_table(dev, port, table->entries);
+ --table->total;
+out:
+ mutex_unlock(&table->mutex);
+}
+EXPORT_SYMBOL_GPL(mlx4_unregister_vlan);
+
+int mlx4_SET_PORT(struct mlx4_dev *dev, u8 port)
+{
+ struct mlx4_cmd_mailbox *mailbox;
+ int err;
+ u8 is_eth = dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH;
+
+ mailbox = mlx4_alloc_cmd_mailbox(dev);
+ if (IS_ERR(mailbox))
+ return PTR_ERR(mailbox);
+
+ memset(mailbox->buf, 0, 256);
+ if (is_eth) {
+ ((u8 *) mailbox->buf)[3] = 6;
+ ((__be16 *) mailbox->buf)[4] = cpu_to_be16(1 << 15);
+ ((__be16 *) mailbox->buf)[6] = cpu_to_be16(1 << 15);
+ }
+ err = mlx4_cmd(dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT,
+ MLX4_CMD_TIME_CLASS_B);
+
+ mlx4_free_cmd_mailbox(dev, mailbox);
+ return err;
+}
}
EXPORT_SYMBOL_GPL(mlx4_qp_modify);
-int mlx4_qp_alloc(struct mlx4_dev *dev, int sqpn, struct mlx4_qp *qp)
+int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ struct mlx4_qp_table *qp_table = &priv->qp_table;
+ int qpn;
+
+ qpn = mlx4_bitmap_alloc_range(&qp_table->bitmap, cnt, align);
+ if (qpn == -1)
+ return -ENOMEM;
+
+ *base = qpn;
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mlx4_qp_reserve_range);
+
+void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt)
+{
+ struct mlx4_priv *priv = mlx4_priv(dev);
+ struct mlx4_qp_table *qp_table = &priv->qp_table;
+ if (base_qpn < dev->caps.sqp_start + 8)
+ return;
+
+ mlx4_bitmap_free_range(&qp_table->bitmap, base_qpn, cnt);
+}
+EXPORT_SYMBOL_GPL(mlx4_qp_release_range);
+
+int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_qp_table *qp_table = &priv->qp_table;
int err;
- if (sqpn)
- qp->qpn = sqpn;
- else {
- qp->qpn = mlx4_bitmap_alloc(&qp_table->bitmap);
- if (qp->qpn == -1)
- return -ENOMEM;
- }
+ if (!qpn)
+ return -EINVAL;
+
+ qp->qpn = qpn;
err = mlx4_table_get(dev, &qp_table->qp_table, qp->qpn);
if (err)
mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
err_out:
- if (!sqpn)
- mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
-
return err;
}
EXPORT_SYMBOL_GPL(mlx4_qp_alloc);
mlx4_table_put(dev, &qp_table->altc_table, qp->qpn);
mlx4_table_put(dev, &qp_table->auxc_table, qp->qpn);
mlx4_table_put(dev, &qp_table->qp_table, qp->qpn);
-
- if (qp->qpn >= dev->caps.sqp_start + 8)
- mlx4_bitmap_free(&qp_table->bitmap, qp->qpn);
}
EXPORT_SYMBOL_GPL(mlx4_qp_free);
{
struct mlx4_qp_table *qp_table = &mlx4_priv(dev)->qp_table;
int err;
+ int reserved_from_top = 0;
spin_lock_init(&qp_table->lock);
INIT_RADIX_TREE(&dev->qp_table_tree, GFP_ATOMIC);
* block of special QPs must be aligned to a multiple of 8, so
* round up.
*/
- dev->caps.sqp_start = ALIGN(dev->caps.reserved_qps, 8);
+ dev->caps.sqp_start =
+ ALIGN(dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 8);
+
+ {
+ int sort[MLX4_NUM_QP_REGION];
+ int i, j, tmp;
+ int last_base = dev->caps.num_qps;
+
+ for (i = 1; i < MLX4_NUM_QP_REGION; ++i)
+ sort[i] = i;
+
+ for (i = MLX4_NUM_QP_REGION; i > 0; --i) {
+ for (j = 2; j < i; ++j) {
+ if (dev->caps.reserved_qps_cnt[sort[j]] >
+ dev->caps.reserved_qps_cnt[sort[j - 1]]) {
+ tmp = sort[j];
+ sort[j] = sort[j - 1];
+ sort[j - 1] = tmp;
+ }
+ }
+ }
+
+ for (i = 1; i < MLX4_NUM_QP_REGION; ++i) {
+ last_base -= dev->caps.reserved_qps_cnt[sort[i]];
+ dev->caps.reserved_qps_base[sort[i]] = last_base;
+ reserved_from_top +=
+ dev->caps.reserved_qps_cnt[sort[i]];
+ }
+
+ }
+
err = mlx4_bitmap_init(&qp_table->bitmap, dev->caps.num_qps,
- (1 << 24) - 1, dev->caps.sqp_start + 8);
+ (1 << 23) - 1, dev->caps.sqp_start + 8,
+ reserved_from_top);
if (err)
return err;
INIT_RADIX_TREE(&srq_table->tree, GFP_ATOMIC);
err = mlx4_bitmap_init(&srq_table->bitmap, dev->caps.num_srqs,
- dev->caps.num_srqs - 1, dev->caps.reserved_srqs);
+ dev->caps.num_srqs - 1, dev->caps.reserved_srqs, 0);
if (err)
return err;
--- /dev/null
+/*
+ * xtsonic.c
+ *
+ * (C) 2001 - 2007 Tensilica Inc.
+ * Kevin Chea <kchea@yahoo.com>
+ * Marc Gauthier <marc@linux-xtensa.org>
+ * Chris Zankel <chris@zankel.net>
+ *
+ * (C) 1996,1998 by Thomas Bogendoerfer (tsbogend@alpha.franken.de)
+ *
+ * This driver is based on work from Andreas Busse, but most of
+ * the code is rewritten.
+ *
+ * (C) 1995 by Andreas Busse (andy@waldorf-gmbh.de)
+ *
+ * A driver for the onboard Sonic ethernet controller on the XT2000.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/io.h>
+#include <asm/pgtable.h>
+#include <asm/dma.h>
+
+static char xtsonic_string[] = "xtsonic";
+
+extern unsigned xtboard_nvram_valid(void);
+extern void xtboard_get_ether_addr(unsigned char *buf);
+
+#include "sonic.h"
+
+/*
+ * According to the documentation for the Sonic ethernet controller,
+ * EOBC should be 760 words (1520 bytes) for 32-bit applications, and,
+ * as such, 2 words less than the buffer size. The value for RBSIZE
+ * defined in sonic.h, however is only 1520.
+ *
+ * (Note that in 16-bit configurations, EOBC is 759 words (1518 bytes) and
+ * RBSIZE 1520 bytes)
+ */
+#undef SONIC_RBSIZE
+#define SONIC_RBSIZE 1524
+
+/*
+ * The chip provides 256 byte register space.
+ */
+#define SONIC_MEM_SIZE 0x100
+
+/*
+ * Macros to access SONIC registers
+ */
+#define SONIC_READ(reg) \
+ (0xffff & *((volatile unsigned int *)dev->base_addr+reg))
+
+#define SONIC_WRITE(reg,val) \
+ *((volatile unsigned int *)dev->base_addr+reg) = val
+
+
+/* Use 0 for production, 1 for verification, and >2 for debug */
+#ifdef SONIC_DEBUG
+static unsigned int sonic_debug = SONIC_DEBUG;
+#else
+static unsigned int sonic_debug = 1;
+#endif
+
+/*
+ * We cannot use station (ethernet) address prefixes to detect the
+ * sonic controller since these are board manufacturer depended.
+ * So we check for known Silicon Revision IDs instead.
+ */
+static unsigned short known_revisions[] =
+{
+ 0x101, /* SONIC 83934 */
+ 0xffff /* end of list */
+};
+
+static int xtsonic_open(struct net_device *dev)
+{
+ if (request_irq(dev->irq,&sonic_interrupt,IRQF_DISABLED,"sonic",dev)) {
+ printk(KERN_ERR "%s: unable to get IRQ %d.\n",
+ dev->name, dev->irq);
+ return -EAGAIN;
+ }
+ return sonic_open(dev);
+}
+
+static int xtsonic_close(struct net_device *dev)
+{
+ int err;
+ err = sonic_close(dev);
+ free_irq(dev->irq, dev);
+ return err;
+}
+
+static int __init sonic_probe1(struct net_device *dev)
+{
+ static unsigned version_printed = 0;
+ unsigned int silicon_revision;
+ struct sonic_local *lp = netdev_priv(dev);
+ unsigned int base_addr = dev->base_addr;
+ int i;
+ int err = 0;
+
+ if (!request_mem_region(base_addr, 0x100, xtsonic_string))
+ return -EBUSY;
+
+ /*
+ * get the Silicon Revision ID. If this is one of the known
+ * one assume that we found a SONIC ethernet controller at
+ * the expected location.
+ */
+ silicon_revision = SONIC_READ(SONIC_SR);
+ if (sonic_debug > 1)
+ printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);
+
+ i = 0;
+ while ((known_revisions[i] != 0xffff) &&
+ (known_revisions[i] != silicon_revision))
+ i++;
+
+ if (known_revisions[i] == 0xffff) {
+ printk("SONIC ethernet controller not found (0x%4x)\n",
+ silicon_revision);
+ return -ENODEV;
+ }
+
+ if (sonic_debug && version_printed++ == 0)
+ printk(version);
+
+ /*
+ * Put the sonic into software reset, then retrieve ethernet address.
+ * Note: we are assuming that the boot-loader has initialized the cam.
+ */
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_DCR,
+ SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
+ SONIC_WRITE(SONIC_CEP,0);
+ SONIC_WRITE(SONIC_IMR,0);
+
+ SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
+ SONIC_WRITE(SONIC_CEP,0);
+
+ for (i=0; i<3; i++) {
+ unsigned int val = SONIC_READ(SONIC_CAP0-i);
+ dev->dev_addr[i*2] = val;
+ dev->dev_addr[i*2+1] = val >> 8;
+ }
+
+ /* Initialize the device structure. */
+
+ lp->dma_bitmode = SONIC_BITMODE32;
+
+ /*
+ * Allocate local private descriptor areas in uncached space.
+ * The entire structure must be located within the same 64kb segment.
+ * A simple way to ensure this is to allocate twice the
+ * size of the structure -- given that the structure is
+ * much less than 64 kB, at least one of the halves of
+ * the allocated area will be contained entirely in 64 kB.
+ * We also allocate extra space for a pointer to allow freeing
+ * this structure later on (in xtsonic_cleanup_module()).
+ */
+ lp->descriptors =
+ dma_alloc_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ &lp->descriptors_laddr, GFP_KERNEL);
+
+ if (lp->descriptors == NULL) {
+ printk(KERN_ERR "%s: couldn't alloc DMA memory for "
+ " descriptors.\n", lp->device->bus_id);
+ goto out;
+ }
+
+ lp->cda = lp->descriptors;
+ lp->tda = lp->cda + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ /* get the virtual dma address */
+
+ lp->cda_laddr = lp->descriptors_laddr;
+ lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+ lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
+ * SONIC_BUS_SCALE(lp->dma_bitmode));
+
+ dev->open = xtsonic_open;
+ dev->stop = xtsonic_close;
+ dev->hard_start_xmit = sonic_send_packet;
+ dev->get_stats = sonic_get_stats;
+ dev->set_multicast_list = &sonic_multicast_list;
+ dev->tx_timeout = sonic_tx_timeout;
+ dev->watchdog_timeo = TX_TIMEOUT;
+
+ /*
+ * clear tally counter
+ */
+ SONIC_WRITE(SONIC_CRCT,0xffff);
+ SONIC_WRITE(SONIC_FAET,0xffff);
+ SONIC_WRITE(SONIC_MPT,0xffff);
+
+ return 0;
+out:
+ release_region(dev->base_addr, SONIC_MEM_SIZE);
+ return err;
+}
+
+
+/*
+ * Probe for a SONIC ethernet controller on an XT2000 board.
+ * Actually probing is superfluous but we're paranoid.
+ */
+
+int __init xtsonic_probe(struct platform_device *pdev)
+{
+ struct net_device *dev;
+ struct sonic_local *lp;
+ struct resource *resmem, *resirq;
+ int err = 0;
+
+ DECLARE_MAC_BUF(mac);
+
+ if ((resmem = platform_get_resource(pdev, IORESOURCE_MEM, 0)) == NULL)
+ return -ENODEV;
+
+ if ((resirq = platform_get_resource(pdev, IORESOURCE_IRQ, 0)) == NULL)
+ return -ENODEV;
+
+ if ((dev = alloc_etherdev(sizeof(struct sonic_local))) == NULL)
+ return -ENOMEM;
+
+ lp = netdev_priv(dev);
+ lp->device = &pdev->dev;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ netdev_boot_setup_check(dev);
+
+ dev->base_addr = resmem->start;
+ dev->irq = resirq->start;
+
+ if ((err = sonic_probe1(dev)))
+ goto out;
+ if ((err = register_netdev(dev)))
+ goto out1;
+
+ printk("%s: SONIC ethernet @%08lx, MAC %s, IRQ %d\n", dev->name,
+ dev->base_addr, print_mac(mac, dev->dev_addr), dev->irq);
+
+ return 0;
+
+out1:
+ release_region(dev->base_addr, SONIC_MEM_SIZE);
+out:
+ free_netdev(dev);
+
+ return err;
+}
+
+MODULE_DESCRIPTION("Xtensa XT2000 SONIC ethernet driver");
+module_param(sonic_debug, int, 0);
+MODULE_PARM_DESC(sonic_debug, "xtsonic debug level (1-4)");
+
+#include "sonic.c"
+
+static int __devexit xtsonic_device_remove (struct platform_device *pdev)
+{
+ struct net_device *dev = platform_get_drvdata(pdev);
+ struct sonic_local *lp = netdev_priv(dev);
+
+ unregister_netdev(dev);
+ dma_free_coherent(lp->device,
+ SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
+ lp->descriptors, lp->descriptors_laddr);
+ release_region (dev->base_addr, SONIC_MEM_SIZE);
+ free_netdev(dev);
+
+ return 0;
+}
+
+static struct platform_driver xtsonic_driver = {
+ .probe = xtsonic_probe,
+ .remove = __devexit_p(xtsonic_device_remove),
+ .driver = {
+ .name = xtsonic_string,
+ },
+};
+
+static int __init xtsonic_init(void)
+{
+ return platform_driver_register(&xtsonic_driver);
+}
+
+static void __exit xtsonic_cleanup(void)
+{
+ platform_driver_unregister(&xtsonic_driver);
+}
+
+module_init(xtsonic_init);
+module_exit(xtsonic_cleanup);
info.addr = *addr;
- request_module(info.type);
+ request_module("%s", info.type);
result = i2c_new_device(adap, &info);
if (result == NULL) {
spi->mode |= SPI_CPHA;
if (of_find_property(nc, "spi-cpol", NULL))
spi->mode |= SPI_CPOL;
+ if (of_find_property(nc, "spi-cs-high", NULL))
+ spi->mode |= SPI_CS_HIGH;
/* Device speed */
prop = of_get_property(nc, "spi-max-frequency", &len);
mutex_unlock(&buffer_mutex);
}
+
+/* The function can be used to add a buffer worth of data directly to
+ * the kernel buffer. The buffer is assumed to be a circular buffer.
+ * Take the entries from index start and end at index end, wrapping
+ * at max_entries.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+ unsigned int stop, unsigned int max)
+{
+ int i;
+
+ i = start;
+
+ mutex_lock(&buffer_mutex);
+ while (i != stop) {
+ add_event_entry(buf[i++]);
+
+ if (i >= max)
+ i = 0;
+ }
+
+ mutex_unlock(&buffer_mutex);
+}
+
void free_cpu_buffers(void)
{
int i;
-
+
for_each_online_cpu(i) {
vfree(per_cpu(cpu_buffer, i).buffer);
per_cpu(cpu_buffer, i).buffer = NULL;
}
}
+unsigned long oprofile_get_cpu_buffer_size(void)
+{
+ return fs_cpu_buffer_size;
+}
+
+void oprofile_cpu_buffer_inc_smpl_lost(void)
+{
+ struct oprofile_cpu_buffer *cpu_buf
+ = &__get_cpu_var(cpu_buffer);
+
+ cpu_buf->sample_lost_overflow++;
+}
+
int alloc_cpu_buffers(void)
{
int i;
void free_event_buffer(void);
+/**
+ * Add data to the event buffer.
+ * The data passed is free-form, but typically consists of
+ * file offsets, dcookies, context information, and ESCAPE codes.
+ */
+void add_event_entry(unsigned long data);
+
/* wake up the process sleeping on the event file */
void wake_up_buffer_waiter(void);
oxsemi_952,
oxsemi_954,
oxsemi_840,
+ oxsemi_pcie_pport,
aks_0100,
mobility_pp,
netmos_9705,
/* oxsemi_952 */ { 1, { { 0, 1 }, } },
/* oxsemi_954 */ { 1, { { 0, -1 }, } },
/* oxsemi_840 */ { 1, { { 0, 1 }, } },
+ /* oxsemi_pcie_pport */ { 1, { { 0, 1 }, } },
/* aks_0100 */ { 1, { { 0, -1 }, } },
/* mobility_pp */ { 1, { { 0, 1 }, } },
/* netmos_9705 */ { 1, { { 0, -1 }, } }, /* untested */
{ 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a },
{ 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 },
{ 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a },
- { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
{ PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp },
{ PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_954 },
{ PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_12PCI840,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_840 },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840_G,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0_G,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_G,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_U,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
+ { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_GU,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport },
{ PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 },
+ { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
/* NetMos communication controllers */
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9705,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9705 },
return 0;
}
-static int __init
-dmar_parse_dev(struct dmar_drhd_unit *dmaru)
+static int __init dmar_parse_dev(struct dmar_drhd_unit *dmaru)
{
struct acpi_dmar_hardware_unit *drhd;
static int include_all;
drhd = (struct acpi_dmar_hardware_unit *)header;
printk (KERN_INFO PREFIX
"DRHD (flags: 0x%08x)base: 0x%016Lx\n",
- drhd->flags, drhd->address);
+ drhd->flags, (unsigned long long)drhd->address);
break;
case ACPI_DMAR_TYPE_RESERVED_MEMORY:
rmrr = (struct acpi_dmar_reserved_memory *)header;
printk (KERN_INFO PREFIX
"RMRR base: 0x%016Lx end: 0x%016Lx\n",
- rmrr->base_address, rmrr->end_address);
+ (unsigned long long)rmrr->base_address,
+ (unsigned long long)rmrr->end_address);
break;
}
}
if (!dmar)
return -ENODEV;
- if (dmar->width < PAGE_SHIFT_4K - 1) {
+ if (dmar->width < PAGE_SHIFT - 1) {
printk(KERN_WARNING PREFIX "Invalid DMAR haw\n");
return -EINVAL;
}
ret = dmar_table_detect();
-#ifdef CONFIG_DMAR
{
+#ifdef CONFIG_INTR_REMAP
struct acpi_table_dmar *dmar;
/*
* for now we will disable dma-remapping when interrupt
* is added, we will not need this any more.
*/
dmar = (struct acpi_table_dmar *) dmar_tbl;
- if (ret && cpu_has_x2apic && dmar->flags & 0x1) {
+ if (ret && cpu_has_x2apic && dmar->flags & 0x1)
printk(KERN_INFO
"Queued invalidation will be enabled to support "
"x2apic and Intr-remapping.\n");
- printk(KERN_INFO
- "Disabling IOMMU detection, because of missing "
- "queued invalidation support for IOTLB "
- "invalidation\n");
- printk(KERN_INFO
- "Use \"nox2apic\", if you want to use Intel "
- " IOMMU for DMA-remapping and don't care about "
- " x2apic support\n");
-
- dmar_disabled = 1;
- goto end;
- }
-
+#endif
+#ifdef CONFIG_DMAR
if (ret && !no_iommu && !iommu_detected && !swiotlb &&
!dmar_disabled)
iommu_detected = 1;
- }
-end:
#endif
+ }
dmar_tbl = NULL;
}
iommu->seq_id = iommu_allocated++;
- iommu->reg = ioremap(drhd->reg_base_addr, PAGE_SIZE_4K);
+ iommu->reg = ioremap(drhd->reg_base_addr, VTD_PAGE_SIZE);
if (!iommu->reg) {
printk(KERN_ERR "IOMMU: can't map the region\n");
goto error;
/* the registers might be more than one page */
map_size = max_t(int, ecap_max_iotlb_offset(iommu->ecap),
cap_max_fault_reg_offset(iommu->cap));
- map_size = PAGE_ALIGN_4K(map_size);
- if (map_size > PAGE_SIZE_4K) {
+ map_size = VTD_PAGE_ALIGN(map_size);
+ if (map_size > VTD_PAGE_SIZE) {
iounmap(iommu->reg);
iommu->reg = ioremap(drhd->reg_base_addr, map_size);
if (!iommu->reg) {
ver = readl(iommu->reg + DMAR_VER_REG);
pr_debug("IOMMU %llx: ver %d:%d cap %llx ecap %llx\n",
- drhd->reg_base_addr, DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
- iommu->cap, iommu->ecap);
+ (unsigned long long)drhd->reg_base_addr,
+ DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver),
+ (unsigned long long)iommu->cap,
+ (unsigned long long)iommu->ecap);
spin_lock_init(&iommu->register_lock);
hw = qi->desc;
- spin_lock(&qi->q_lock);
+ spin_lock_irqsave(&qi->q_lock, flags);
while (qi->free_cnt < 3) {
- spin_unlock(&qi->q_lock);
+ spin_unlock_irqrestore(&qi->q_lock, flags);
cpu_relax();
- spin_lock(&qi->q_lock);
+ spin_lock_irqsave(&qi->q_lock, flags);
}
index = qi->free_head;
qi->free_head = (qi->free_head + 2) % QI_LENGTH;
qi->free_cnt -= 2;
- spin_lock_irqsave(&iommu->register_lock, flags);
+ spin_lock(&iommu->register_lock);
/*
* update the HW tail register indicating the presence of
* new descriptors.
*/
writel(qi->free_head << 4, iommu->reg + DMAR_IQT_REG);
- spin_unlock_irqrestore(&iommu->register_lock, flags);
+ spin_unlock(&iommu->register_lock);
while (qi->desc_status[wait_index] != QI_DONE) {
+ /*
+ * We will leave the interrupts disabled, to prevent interrupt
+ * context to queue another cmd while a cmd is already submitted
+ * and waiting for completion on this cpu. This is to avoid
+ * a deadlock where the interrupt context can wait indefinitely
+ * for free slots in the queue.
+ */
spin_unlock(&qi->q_lock);
cpu_relax();
spin_lock(&qi->q_lock);
qi->desc_status[index] = QI_DONE;
reclaim_free_desc(qi);
- spin_unlock(&qi->q_lock);
+ spin_unlock_irqrestore(&qi->q_lock, flags);
}
/*
qi_submit_sync(&desc, iommu);
}
+int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm,
+ u64 type, int non_present_entry_flush)
+{
+
+ struct qi_desc desc;
+
+ if (non_present_entry_flush) {
+ if (!cap_caching_mode(iommu->cap))
+ return 1;
+ else
+ did = 0;
+ }
+
+ desc.low = QI_CC_FM(fm) | QI_CC_SID(sid) | QI_CC_DID(did)
+ | QI_CC_GRAN(type) | QI_CC_TYPE;
+ desc.high = 0;
+
+ qi_submit_sync(&desc, iommu);
+
+ return 0;
+
+}
+
+int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
+ unsigned int size_order, u64 type,
+ int non_present_entry_flush)
+{
+ u8 dw = 0, dr = 0;
+
+ struct qi_desc desc;
+ int ih = 0;
+
+ if (non_present_entry_flush) {
+ if (!cap_caching_mode(iommu->cap))
+ return 1;
+ else
+ did = 0;
+ }
+
+ if (cap_write_drain(iommu->cap))
+ dw = 1;
+
+ if (cap_read_drain(iommu->cap))
+ dr = 1;
+
+ desc.low = QI_IOTLB_DID(did) | QI_IOTLB_DR(dr) | QI_IOTLB_DW(dw)
+ | QI_IOTLB_GRAN(type) | QI_IOTLB_TYPE;
+ desc.high = QI_IOTLB_ADDR(addr) | QI_IOTLB_IH(ih)
+ | QI_IOTLB_AM(size_order);
+
+ qi_submit_sync(&desc, iommu);
+
+ return 0;
+
+}
+
/*
* Enable Queued Invalidation interface. This is a must to support
* interrupt-remapping. Also used by DMA-remapping, which replaces
* Author: Ashok Raj <ashok.raj@intel.com>
* Author: Shaohua Li <shaohua.li@intel.com>
* Author: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
+ * Author: Fenghua Yu <fenghua.yu@intel.com>
*/
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/iova.h>
#include <linux/intel-iommu.h>
-#include <asm/proto.h> /* force_iommu in this header in x86-64*/
#include <asm/cacheflush.h>
#include <asm/iommu.h>
#include "pci.h"
+#define ROOT_SIZE VTD_PAGE_SIZE
+#define CONTEXT_SIZE VTD_PAGE_SIZE
+
#define IS_GFX_DEVICE(pdev) ((pdev->class >> 16) == PCI_BASE_CLASS_DISPLAY)
#define IS_ISA_DEVICE(pdev) ((pdev->class >> 8) == PCI_CLASS_BRIDGE_ISA)
spin_unlock_irqrestore(&iommu->lock, flags);
return NULL;
}
- __iommu_flush_cache(iommu, (void *)context, PAGE_SIZE_4K);
+ __iommu_flush_cache(iommu, (void *)context, CONTEXT_SIZE);
phy_addr = virt_to_phys((void *)context);
set_root_value(root, phy_addr);
set_root_present(root);
return NULL;
}
__iommu_flush_cache(domain->iommu, tmp_page,
- PAGE_SIZE_4K);
+ PAGE_SIZE);
dma_set_pte_addr(*pte, virt_to_phys(tmp_page));
/*
* high level table always sets r/w, last level page
start &= (((u64)1) << addr_width) - 1;
end &= (((u64)1) << addr_width) - 1;
/* in case it's partial page */
- start = PAGE_ALIGN_4K(start);
- end &= PAGE_MASK_4K;
+ start = PAGE_ALIGN(start);
+ end &= PAGE_MASK;
/* we don't need lock here, nobody else touches the iova range */
while (start < end) {
dma_pte_clear_one(domain, start);
- start += PAGE_SIZE_4K;
+ start += VTD_PAGE_SIZE;
}
}
if (!root)
return -ENOMEM;
- __iommu_flush_cache(iommu, root, PAGE_SIZE_4K);
+ __iommu_flush_cache(iommu, root, ROOT_SIZE);
spin_lock_irqsave(&iommu->lock, flags);
iommu->root_entry = root;
return 0;
}
-static int inline iommu_flush_context_global(struct intel_iommu *iommu,
- int non_present_entry_flush)
-{
- return __iommu_flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL,
- non_present_entry_flush);
-}
-
-static int inline iommu_flush_context_domain(struct intel_iommu *iommu, u16 did,
- int non_present_entry_flush)
-{
- return __iommu_flush_context(iommu, did, 0, 0, DMA_CCMD_DOMAIN_INVL,
- non_present_entry_flush);
-}
-
-static int inline iommu_flush_context_device(struct intel_iommu *iommu,
- u16 did, u16 source_id, u8 function_mask, int non_present_entry_flush)
-{
- return __iommu_flush_context(iommu, did, source_id, function_mask,
- DMA_CCMD_DEVICE_INVL, non_present_entry_flush);
-}
-
/* return value determine if we need a write buffer flush */
static int __iommu_flush_iotlb(struct intel_iommu *iommu, u16 did,
u64 addr, unsigned int size_order, u64 type,
printk(KERN_ERR"IOMMU: flush IOTLB failed\n");
if (DMA_TLB_IAIG(val) != DMA_TLB_IIRG(type))
pr_debug("IOMMU: tlb flush request %Lx, actual %Lx\n",
- DMA_TLB_IIRG(type), DMA_TLB_IAIG(val));
+ (unsigned long long)DMA_TLB_IIRG(type),
+ (unsigned long long)DMA_TLB_IAIG(val));
/* flush iotlb entry will implicitly flush write buffer */
return 0;
}
-static int inline iommu_flush_iotlb_global(struct intel_iommu *iommu,
- int non_present_entry_flush)
-{
- return __iommu_flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH,
- non_present_entry_flush);
-}
-
-static int inline iommu_flush_iotlb_dsi(struct intel_iommu *iommu, u16 did,
- int non_present_entry_flush)
-{
- return __iommu_flush_iotlb(iommu, did, 0, 0, DMA_TLB_DSI_FLUSH,
- non_present_entry_flush);
-}
-
static int iommu_flush_iotlb_psi(struct intel_iommu *iommu, u16 did,
u64 addr, unsigned int pages, int non_present_entry_flush)
{
unsigned int mask;
- BUG_ON(addr & (~PAGE_MASK_4K));
+ BUG_ON(addr & (~VTD_PAGE_MASK));
BUG_ON(pages == 0);
/* Fallback to domain selective flush if no PSI support */
if (!cap_pgsel_inv(iommu->cap))
- return iommu_flush_iotlb_dsi(iommu, did,
- non_present_entry_flush);
+ return iommu->flush.flush_iotlb(iommu, did, 0, 0,
+ DMA_TLB_DSI_FLUSH,
+ non_present_entry_flush);
/*
* PSI requires page size to be 2 ^ x, and the base address is naturally
mask = ilog2(__roundup_pow_of_two(pages));
/* Fallback to domain selective flush if size is too big */
if (mask > cap_max_amask_val(iommu->cap))
- return iommu_flush_iotlb_dsi(iommu, did,
- non_present_entry_flush);
+ return iommu->flush.flush_iotlb(iommu, did, 0, 0,
+ DMA_TLB_DSI_FLUSH, non_present_entry_flush);
- return __iommu_flush_iotlb(iommu, did, addr, mask,
- DMA_TLB_PSI_FLUSH, non_present_entry_flush);
+ return iommu->flush.flush_iotlb(iommu, did, addr, mask,
+ DMA_TLB_PSI_FLUSH,
+ non_present_entry_flush);
}
static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
}
static int iommu_page_fault_do_one(struct intel_iommu *iommu, int type,
- u8 fault_reason, u16 source_id, u64 addr)
+ u8 fault_reason, u16 source_id, unsigned long long addr)
{
const char *reason;
if (!r->flags || !(r->flags & IORESOURCE_MEM))
continue;
addr = r->start;
- addr &= PAGE_MASK_4K;
+ addr &= PAGE_MASK;
size = r->end - addr;
- size = PAGE_ALIGN_4K(size);
+ size = PAGE_ALIGN(size);
iova = reserve_iova(&reserved_iova_list, IOVA_PFN(addr),
IOVA_PFN(size + addr) - 1);
if (!iova)
domain->pgd = (struct dma_pte *)alloc_pgtable_page();
if (!domain->pgd)
return -ENOMEM;
- __iommu_flush_cache(iommu, domain->pgd, PAGE_SIZE_4K);
+ __iommu_flush_cache(iommu, domain->pgd, PAGE_SIZE);
return 0;
}
/* destroy iovas */
put_iova_domain(&domain->iovad);
end = DOMAIN_MAX_ADDR(domain->gaw);
- end = end & (~PAGE_MASK_4K);
+ end = end & (~PAGE_MASK);
/* clear ptes */
dma_pte_clear_range(domain, 0, end);
__iommu_flush_cache(iommu, context, sizeof(*context));
/* it's a non-present to present mapping */
- if (iommu_flush_context_device(iommu, domain->id,
- (((u16)bus) << 8) | devfn, DMA_CCMD_MASK_NOBIT, 1))
+ if (iommu->flush.flush_context(iommu, domain->id,
+ (((u16)bus) << 8) | devfn, DMA_CCMD_MASK_NOBIT,
+ DMA_CCMD_DEVICE_INVL, 1))
iommu_flush_write_buffer(iommu);
else
- iommu_flush_iotlb_dsi(iommu, 0, 0);
+ iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_DSI_FLUSH, 0);
+
spin_unlock_irqrestore(&iommu->lock, flags);
return 0;
}
u64 start_pfn, end_pfn;
struct dma_pte *pte;
int index;
+ int addr_width = agaw_to_width(domain->agaw);
+
+ hpa &= (((u64)1) << addr_width) - 1;
if ((prot & (DMA_PTE_READ|DMA_PTE_WRITE)) == 0)
return -EINVAL;
- iova &= PAGE_MASK_4K;
- start_pfn = ((u64)hpa) >> PAGE_SHIFT_4K;
- end_pfn = (PAGE_ALIGN_4K(((u64)hpa) + size)) >> PAGE_SHIFT_4K;
+ iova &= PAGE_MASK;
+ start_pfn = ((u64)hpa) >> VTD_PAGE_SHIFT;
+ end_pfn = (VTD_PAGE_ALIGN(((u64)hpa) + size)) >> VTD_PAGE_SHIFT;
index = 0;
while (start_pfn < end_pfn) {
- pte = addr_to_dma_pte(domain, iova + PAGE_SIZE_4K * index);
+ pte = addr_to_dma_pte(domain, iova + VTD_PAGE_SIZE * index);
if (!pte)
return -ENOMEM;
/* We don't need lock here, nobody else
* touches the iova range
*/
BUG_ON(dma_pte_addr(*pte));
- dma_set_pte_addr(*pte, start_pfn << PAGE_SHIFT_4K);
+ dma_set_pte_addr(*pte, start_pfn << VTD_PAGE_SHIFT);
dma_set_pte_prot(*pte, prot);
__iommu_flush_cache(domain->iommu, pte, sizeof(*pte));
start_pfn++;
static void detach_domain_for_dev(struct dmar_domain *domain, u8 bus, u8 devfn)
{
clear_context_table(domain->iommu, bus, devfn);
- iommu_flush_context_global(domain->iommu, 0);
- iommu_flush_iotlb_global(domain->iommu, 0);
+ domain->iommu->flush.flush_context(domain->iommu, 0, 0, 0,
+ DMA_CCMD_GLOBAL_INVL, 0);
+ domain->iommu->flush.flush_iotlb(domain->iommu, 0, 0, 0,
+ DMA_TLB_GLOBAL_FLUSH, 0);
}
static void domain_remove_dev_info(struct dmar_domain *domain)
return find_domain(pdev);
}
-static int iommu_prepare_identity_map(struct pci_dev *pdev, u64 start, u64 end)
+static int iommu_prepare_identity_map(struct pci_dev *pdev,
+ unsigned long long start,
+ unsigned long long end)
{
struct dmar_domain *domain;
unsigned long size;
- u64 base;
+ unsigned long long base;
int ret;
printk(KERN_INFO
return -ENOMEM;
/* The address might not be aligned */
- base = start & PAGE_MASK_4K;
+ base = start & PAGE_MASK;
size = end - base;
- size = PAGE_ALIGN_4K(size);
+ size = PAGE_ALIGN(size);
if (!reserve_iova(&domain->iovad, IOVA_PFN(base),
IOVA_PFN(base + size) - 1)) {
printk(KERN_ERR "IOMMU: reserve iova failed\n");
}
}
+ for_each_drhd_unit(drhd) {
+ if (drhd->ignored)
+ continue;
+
+ iommu = drhd->iommu;
+ if (dmar_enable_qi(iommu)) {
+ /*
+ * Queued Invalidate not enabled, use Register Based
+ * Invalidate
+ */
+ iommu->flush.flush_context = __iommu_flush_context;
+ iommu->flush.flush_iotlb = __iommu_flush_iotlb;
+ printk(KERN_INFO "IOMMU 0x%Lx: using Register based "
+ "invalidation\n", drhd->reg_base_addr);
+ } else {
+ iommu->flush.flush_context = qi_flush_context;
+ iommu->flush.flush_iotlb = qi_flush_iotlb;
+ printk(KERN_INFO "IOMMU 0x%Lx: using Queued "
+ "invalidation\n", drhd->reg_base_addr);
+ }
+ }
+
/*
* For each rmrr
* for each dev attached to rmrr
iommu_set_root_entry(iommu);
- iommu_flush_context_global(iommu, 0);
- iommu_flush_iotlb_global(iommu, 0);
-
+ iommu->flush.flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL,
+ 0);
+ iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH,
+ 0);
iommu_disable_protect_mem_regions(iommu);
ret = iommu_enable_translation(iommu);
static inline u64 aligned_size(u64 host_addr, size_t size)
{
u64 addr;
- addr = (host_addr & (~PAGE_MASK_4K)) + size;
- return PAGE_ALIGN_4K(addr);
+ addr = (host_addr & (~PAGE_MASK)) + size;
+ return PAGE_ALIGN(addr);
}
struct iova *
return NULL;
piova = alloc_iova(&domain->iovad,
- size >> PAGE_SHIFT_4K, IOVA_PFN(end), 1);
+ size >> PAGE_SHIFT, IOVA_PFN(end), 1);
return piova;
}
static struct iova *
__intel_alloc_iova(struct device *dev, struct dmar_domain *domain,
- size_t size)
+ size_t size, u64 dma_mask)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct iova *iova = NULL;
- if ((pdev->dma_mask <= DMA_32BIT_MASK) || (dmar_forcedac)) {
- iova = iommu_alloc_iova(domain, size, pdev->dma_mask);
- } else {
+ if (dma_mask <= DMA_32BIT_MASK || dmar_forcedac)
+ iova = iommu_alloc_iova(domain, size, dma_mask);
+ else {
/*
* First try to allocate an io virtual address in
* DMA_32BIT_MASK and if that fails then try allocating
*/
iova = iommu_alloc_iova(domain, size, DMA_32BIT_MASK);
if (!iova)
- iova = iommu_alloc_iova(domain, size, pdev->dma_mask);
+ iova = iommu_alloc_iova(domain, size, dma_mask);
}
if (!iova) {
return domain;
}
-static dma_addr_t
-intel_map_single(struct device *hwdev, phys_addr_t paddr, size_t size, int dir)
+static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
+ size_t size, int dir, u64 dma_mask)
{
struct pci_dev *pdev = to_pci_dev(hwdev);
struct dmar_domain *domain;
- unsigned long start_paddr;
+ phys_addr_t start_paddr;
struct iova *iova;
int prot = 0;
int ret;
size = aligned_size((u64)paddr, size);
- iova = __intel_alloc_iova(hwdev, domain, size);
+ iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
if (!iova)
goto error;
- start_paddr = iova->pfn_lo << PAGE_SHIFT_4K;
+ start_paddr = (phys_addr_t)iova->pfn_lo << PAGE_SHIFT;
/*
* Check if DMAR supports zero-length reads on write only
* is not a big problem
*/
ret = domain_page_mapping(domain, start_paddr,
- ((u64)paddr) & PAGE_MASK_4K, size, prot);
+ ((u64)paddr) & PAGE_MASK, size, prot);
if (ret)
goto error;
- pr_debug("Device %s request: %lx@%llx mapping: %lx@%llx, dir %d\n",
- pci_name(pdev), size, (u64)paddr,
- size, (u64)start_paddr, dir);
-
/* it's a non-present to present mapping */
ret = iommu_flush_iotlb_psi(domain->iommu, domain->id,
- start_paddr, size >> PAGE_SHIFT_4K, 1);
+ start_paddr, size >> VTD_PAGE_SHIFT, 1);
if (ret)
iommu_flush_write_buffer(domain->iommu);
- return (start_paddr + ((u64)paddr & (~PAGE_MASK_4K)));
+ return start_paddr + ((u64)paddr & (~PAGE_MASK));
error:
if (iova)
__free_iova(&domain->iovad, iova);
printk(KERN_ERR"Device %s request: %lx@%llx dir %d --- failed\n",
- pci_name(pdev), size, (u64)paddr, dir);
+ pci_name(pdev), size, (unsigned long long)paddr, dir);
return 0;
}
+dma_addr_t intel_map_single(struct device *hwdev, phys_addr_t paddr,
+ size_t size, int dir)
+{
+ return __intel_map_single(hwdev, paddr, size, dir,
+ to_pci_dev(hwdev)->dma_mask);
+}
+
static void flush_unmaps(void)
{
int i, j;
struct intel_iommu *iommu =
deferred_flush[i].domain[0]->iommu;
- iommu_flush_iotlb_global(iommu, 0);
+ iommu->flush.flush_iotlb(iommu, 0, 0, 0,
+ DMA_TLB_GLOBAL_FLUSH, 0);
for (j = 0; j < deferred_flush[i].next; j++) {
__free_iova(&deferred_flush[i].domain[j]->iovad,
deferred_flush[i].iova[j]);
spin_unlock_irqrestore(&async_umap_flush_lock, flags);
}
-static void intel_unmap_single(struct device *dev, dma_addr_t dev_addr,
- size_t size, int dir)
+void intel_unmap_single(struct device *dev, dma_addr_t dev_addr, size_t size,
+ int dir)
{
struct pci_dev *pdev = to_pci_dev(dev);
struct dmar_domain *domain;
if (!iova)
return;
- start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+ start_addr = iova->pfn_lo << PAGE_SHIFT;
size = aligned_size((u64)dev_addr, size);
pr_debug("Device %s unmapping: %lx@%llx\n",
- pci_name(pdev), size, (u64)start_addr);
+ pci_name(pdev), size, (unsigned long long)start_addr);
/* clear the whole page */
dma_pte_clear_range(domain, start_addr, start_addr + size);
dma_pte_free_pagetable(domain, start_addr, start_addr + size);
if (intel_iommu_strict) {
if (iommu_flush_iotlb_psi(domain->iommu,
- domain->id, start_addr, size >> PAGE_SHIFT_4K, 0))
+ domain->id, start_addr, size >> VTD_PAGE_SHIFT, 0))
iommu_flush_write_buffer(domain->iommu);
/* free iova */
__free_iova(&domain->iovad, iova);
}
}
-static void * intel_alloc_coherent(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t flags)
+void *intel_alloc_coherent(struct device *hwdev, size_t size,
+ dma_addr_t *dma_handle, gfp_t flags)
{
void *vaddr;
int order;
- size = PAGE_ALIGN_4K(size);
+ size = PAGE_ALIGN(size);
order = get_order(size);
flags &= ~(GFP_DMA | GFP_DMA32);
return NULL;
memset(vaddr, 0, size);
- *dma_handle = intel_map_single(hwdev, virt_to_bus(vaddr), size, DMA_BIDIRECTIONAL);
+ *dma_handle = __intel_map_single(hwdev, virt_to_bus(vaddr), size,
+ DMA_BIDIRECTIONAL,
+ hwdev->coherent_dma_mask);
if (*dma_handle)
return vaddr;
free_pages((unsigned long)vaddr, order);
return NULL;
}
-static void intel_free_coherent(struct device *hwdev, size_t size,
- void *vaddr, dma_addr_t dma_handle)
+void intel_free_coherent(struct device *hwdev, size_t size, void *vaddr,
+ dma_addr_t dma_handle)
{
int order;
- size = PAGE_ALIGN_4K(size);
+ size = PAGE_ALIGN(size);
order = get_order(size);
intel_unmap_single(hwdev, dma_handle, size, DMA_BIDIRECTIONAL);
}
#define SG_ENT_VIRT_ADDRESS(sg) (sg_virt((sg)))
-static void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
- int nelems, int dir)
+
+void intel_unmap_sg(struct device *hwdev, struct scatterlist *sglist,
+ int nelems, int dir)
{
int i;
struct pci_dev *pdev = to_pci_dev(hwdev);
size += aligned_size((u64)addr, sg->length);
}
- start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+ start_addr = iova->pfn_lo << PAGE_SHIFT;
/* clear the whole page */
dma_pte_clear_range(domain, start_addr, start_addr + size);
dma_pte_free_pagetable(domain, start_addr, start_addr + size);
if (iommu_flush_iotlb_psi(domain->iommu, domain->id, start_addr,
- size >> PAGE_SHIFT_4K, 0))
+ size >> VTD_PAGE_SHIFT, 0))
iommu_flush_write_buffer(domain->iommu);
/* free iova */
return nelems;
}
-static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist,
- int nelems, int dir)
+int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int nelems,
+ int dir)
{
void *addr;
int i;
size += aligned_size((u64)addr, sg->length);
}
- iova = __intel_alloc_iova(hwdev, domain, size);
+ iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
if (!iova) {
sglist->dma_length = 0;
return 0;
if (dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL)
prot |= DMA_PTE_WRITE;
- start_addr = iova->pfn_lo << PAGE_SHIFT_4K;
+ start_addr = iova->pfn_lo << PAGE_SHIFT;
offset = 0;
for_each_sg(sglist, sg, nelems, i) {
addr = SG_ENT_VIRT_ADDRESS(sg);
addr = (void *)virt_to_phys(addr);
size = aligned_size((u64)addr, sg->length);
ret = domain_page_mapping(domain, start_addr + offset,
- ((u64)addr) & PAGE_MASK_4K,
+ ((u64)addr) & PAGE_MASK,
size, prot);
if (ret) {
/* clear the page */
return 0;
}
sg->dma_address = start_addr + offset +
- ((u64)addr & (~PAGE_MASK_4K));
+ ((u64)addr & (~PAGE_MASK));
sg->dma_length = sg->length;
offset += size;
}
/* it's a non-present to present mapping */
if (iommu_flush_iotlb_psi(domain->iommu, domain->id,
- start_addr, offset >> PAGE_SHIFT_4K, 1))
+ start_addr, offset >> VTD_PAGE_SHIFT, 1))
iommu_flush_write_buffer(domain->iommu);
return nelems;
}
sizeof(struct device_domain_info),
0,
SLAB_HWCACHE_ALIGN,
-
NULL);
if (!iommu_devinfo_cache) {
printk(KERN_ERR "Couldn't create devinfo cache\n");
sizeof(struct iova),
0,
SLAB_HWCACHE_ALIGN,
-
NULL);
if (!iommu_iova_cache) {
printk(KERN_ERR "Couldn't create iova cache\n");
return;
end = DOMAIN_MAX_ADDR(domain->gaw);
- end = end & (~PAGE_MASK_4K);
+ end = end & (~VTD_PAGE_MASK);
/* clear ptes */
dma_pte_clear_range(domain, 0, end);
if (pte)
pfn = dma_pte_addr(*pte);
- return pfn >> PAGE_SHIFT_4K;
+ return pfn >> VTD_PAGE_SHIFT;
}
EXPORT_SYMBOL_GPL(intel_iommu_iova_to_pfn);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR,quirk_mellanox_tavor);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX,PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE,quirk_mellanox_tavor);
+/* Many VIA bridges seem to corrupt data for DAC. Disable it here */
+int forbid_dac __read_mostly;
+EXPORT_SYMBOL(forbid_dac);
+
+static __devinit void via_no_dac(struct pci_dev *dev)
+{
+ if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI && forbid_dac == 0) {
+ dev_info(&dev->dev,
+ "VIA PCI bridge detected. Disabling DAC.\n");
+ forbid_dac = 1;
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_ANY_ID, via_no_dac);
+
/* Deal with broken BIOS'es that neglect to enable passive release,
which can cause problems in combination with the 82441FX/PPro MTRRs */
static void quirk_passive_release(struct pci_dev *dev)
pxa2xx-obj-$(CONFIG_PXA_SHARPSL) += pxa2xx_sharpsl.o
pxa2xx-obj-$(CONFIG_MACH_ARMCORE) += pxa2xx_cm_x2xx_cs.o
pxa2xx-obj-$(CONFIG_ARCH_VIPER) += pxa2xx_viper.o
-pxa2xx-obj-$(CONFIG_TRIZEPS_PCMCIA) += pxa2xx_trizeps.o
+pxa2xx-obj-$(CONFIG_TRIZEPS_PCMCIA) += pxa2xx_trizeps4.o
pxa2xx-obj-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o
pxa2xx-obj-$(CONFIG_MACH_PALMLD) += pxa2xx_palmld.o
platforms. The support is integrated with the rest of
the Menelaus driver; it's not separate module.
+config RTC_DRV_TWL4030
+ tristate "TI TWL4030/TWL5030/TPS659x0"
+ depends on RTC_CLASS && TWL4030_CORE
+ help
+ If you say yes here you get support for the RTC on the
+ TWL4030 family chips, used mostly with OMAP3 platforms.
+
+ This driver can also be built as a module. If so, the module
+ will be called rtc-twl4030.
+
config RTC_DRV_S35390A
tristate "Seiko Instruments S-35390A"
select BITREVERSE
obj-$(CONFIG_RTC_DRV_SH) += rtc-sh.o
obj-$(CONFIG_RTC_DRV_STK17TA8) += rtc-stk17ta8.o
obj-$(CONFIG_RTC_DRV_TEST) += rtc-test.o
+obj-$(CONFIG_RTC_DRV_TWL4030) += rtc-twl4030.o
obj-$(CONFIG_RTC_DRV_V3020) += rtc-v3020.o
obj-$(CONFIG_RTC_DRV_VR41XX) += rtc-vr41xx.o
obj-$(CONFIG_RTC_DRV_X1205) += rtc-x1205.o
--- /dev/null
+/*
+ * rtc-twl4030.c -- TWL4030 Real Time Clock interface
+ *
+ * Copyright (C) 2007 MontaVista Software, Inc
+ * Author: Alexandre Rusev <source@mvista.com>
+ *
+ * Based on original TI driver twl4030-rtc.c
+ * Copyright (C) 2006 Texas Instruments, Inc.
+ *
+ * Based on rtc-omap.c
+ * Copyright (C) 2003 MontaVista Software, Inc.
+ * Author: George G. Davis <gdavis@mvista.com> or <source@mvista.com>
+ * Copyright (C) 2006 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/rtc.h>
+#include <linux/bcd.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+
+#include <linux/i2c/twl4030.h>
+
+
+/*
+ * RTC block register offsets (use TWL_MODULE_RTC)
+ */
+#define REG_SECONDS_REG 0x00
+#define REG_MINUTES_REG 0x01
+#define REG_HOURS_REG 0x02
+#define REG_DAYS_REG 0x03
+#define REG_MONTHS_REG 0x04
+#define REG_YEARS_REG 0x05
+#define REG_WEEKS_REG 0x06
+
+#define REG_ALARM_SECONDS_REG 0x07
+#define REG_ALARM_MINUTES_REG 0x08
+#define REG_ALARM_HOURS_REG 0x09
+#define REG_ALARM_DAYS_REG 0x0A
+#define REG_ALARM_MONTHS_REG 0x0B
+#define REG_ALARM_YEARS_REG 0x0C
+
+#define REG_RTC_CTRL_REG 0x0D
+#define REG_RTC_STATUS_REG 0x0E
+#define REG_RTC_INTERRUPTS_REG 0x0F
+
+#define REG_RTC_COMP_LSB_REG 0x10
+#define REG_RTC_COMP_MSB_REG 0x11
+
+/* RTC_CTRL_REG bitfields */
+#define BIT_RTC_CTRL_REG_STOP_RTC_M 0x01
+#define BIT_RTC_CTRL_REG_ROUND_30S_M 0x02
+#define BIT_RTC_CTRL_REG_AUTO_COMP_M 0x04
+#define BIT_RTC_CTRL_REG_MODE_12_24_M 0x08
+#define BIT_RTC_CTRL_REG_TEST_MODE_M 0x10
+#define BIT_RTC_CTRL_REG_SET_32_COUNTER_M 0x20
+#define BIT_RTC_CTRL_REG_GET_TIME_M 0x40
+
+/* RTC_STATUS_REG bitfields */
+#define BIT_RTC_STATUS_REG_RUN_M 0x02
+#define BIT_RTC_STATUS_REG_1S_EVENT_M 0x04
+#define BIT_RTC_STATUS_REG_1M_EVENT_M 0x08
+#define BIT_RTC_STATUS_REG_1H_EVENT_M 0x10
+#define BIT_RTC_STATUS_REG_1D_EVENT_M 0x20
+#define BIT_RTC_STATUS_REG_ALARM_M 0x40
+#define BIT_RTC_STATUS_REG_POWER_UP_M 0x80
+
+/* RTC_INTERRUPTS_REG bitfields */
+#define BIT_RTC_INTERRUPTS_REG_EVERY_M 0x03
+#define BIT_RTC_INTERRUPTS_REG_IT_TIMER_M 0x04
+#define BIT_RTC_INTERRUPTS_REG_IT_ALARM_M 0x08
+
+
+/* REG_SECONDS_REG through REG_YEARS_REG is how many registers? */
+#define ALL_TIME_REGS 6
+
+/*----------------------------------------------------------------------*/
+
+/*
+ * Supports 1 byte read from TWL4030 RTC register.
+ */
+static int twl4030_rtc_read_u8(u8 *data, u8 reg)
+{
+ int ret;
+
+ ret = twl4030_i2c_read_u8(TWL4030_MODULE_RTC, data, reg);
+ if (ret < 0)
+ pr_err("twl4030_rtc: Could not read TWL4030"
+ "register %X - error %d\n", reg, ret);
+ return ret;
+}
+
+/*
+ * Supports 1 byte write to TWL4030 RTC registers.
+ */
+static int twl4030_rtc_write_u8(u8 data, u8 reg)
+{
+ int ret;
+
+ ret = twl4030_i2c_write_u8(TWL4030_MODULE_RTC, data, reg);
+ if (ret < 0)
+ pr_err("twl4030_rtc: Could not write TWL4030"
+ "register %X - error %d\n", reg, ret);
+ return ret;
+}
+
+/*
+ * Cache the value for timer/alarm interrupts register; this is
+ * only changed by callers holding rtc ops lock (or resume).
+ */
+static unsigned char rtc_irq_bits;
+
+/*
+ * Enable timer and/or alarm interrupts.
+ */
+static int set_rtc_irq_bit(unsigned char bit)
+{
+ unsigned char val;
+ int ret;
+
+ val = rtc_irq_bits | bit;
+ ret = twl4030_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
+ if (ret == 0)
+ rtc_irq_bits = val;
+
+ return ret;
+}
+
+/*
+ * Disable timer and/or alarm interrupts.
+ */
+static int mask_rtc_irq_bit(unsigned char bit)
+{
+ unsigned char val;
+ int ret;
+
+ val = rtc_irq_bits & ~bit;
+ ret = twl4030_rtc_write_u8(val, REG_RTC_INTERRUPTS_REG);
+ if (ret == 0)
+ rtc_irq_bits = val;
+
+ return ret;
+}
+
+static inline int twl4030_rtc_alarm_irq_set_state(int enabled)
+{
+ int ret;
+
+ if (enabled)
+ ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+ else
+ ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+
+ return ret;
+}
+
+static inline int twl4030_rtc_irq_set_state(int enabled)
+{
+ int ret;
+
+ if (enabled)
+ ret = set_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+ else
+ ret = mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+
+ return ret;
+}
+
+/*
+ * Gets current TWL4030 RTC time and date parameters.
+ *
+ * The RTC's time/alarm representation is not what gmtime(3) requires
+ * Linux to use:
+ *
+ * - Months are 1..12 vs Linux 0-11
+ * - Years are 0..99 vs Linux 1900..N (we assume 21st century)
+ */
+static int twl4030_rtc_read_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned char rtc_data[ALL_TIME_REGS + 1];
+ int ret;
+ u8 save_control;
+
+ ret = twl4030_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ return ret;
+
+ save_control |= BIT_RTC_CTRL_REG_GET_TIME_M;
+
+ ret = twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ return ret;
+
+ ret = twl4030_i2c_read(TWL4030_MODULE_RTC, rtc_data,
+ REG_SECONDS_REG, ALL_TIME_REGS);
+
+ if (ret < 0) {
+ dev_err(dev, "rtc_read_time error %d\n", ret);
+ return ret;
+ }
+
+ tm->tm_sec = bcd2bin(rtc_data[0]);
+ tm->tm_min = bcd2bin(rtc_data[1]);
+ tm->tm_hour = bcd2bin(rtc_data[2]);
+ tm->tm_mday = bcd2bin(rtc_data[3]);
+ tm->tm_mon = bcd2bin(rtc_data[4]) - 1;
+ tm->tm_year = bcd2bin(rtc_data[5]) + 100;
+
+ return ret;
+}
+
+static int twl4030_rtc_set_time(struct device *dev, struct rtc_time *tm)
+{
+ unsigned char save_control;
+ unsigned char rtc_data[ALL_TIME_REGS + 1];
+ int ret;
+
+ rtc_data[1] = bin2bcd(tm->tm_sec);
+ rtc_data[2] = bin2bcd(tm->tm_min);
+ rtc_data[3] = bin2bcd(tm->tm_hour);
+ rtc_data[4] = bin2bcd(tm->tm_mday);
+ rtc_data[5] = bin2bcd(tm->tm_mon + 1);
+ rtc_data[6] = bin2bcd(tm->tm_year - 100);
+
+ /* Stop RTC while updating the TC registers */
+ ret = twl4030_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ goto out;
+
+ save_control &= ~BIT_RTC_CTRL_REG_STOP_RTC_M;
+ twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ goto out;
+
+ /* update all the time registers in one shot */
+ ret = twl4030_i2c_write(TWL4030_MODULE_RTC, rtc_data,
+ REG_SECONDS_REG, ALL_TIME_REGS);
+ if (ret < 0) {
+ dev_err(dev, "rtc_set_time error %d\n", ret);
+ goto out;
+ }
+
+ /* Start back RTC */
+ save_control |= BIT_RTC_CTRL_REG_STOP_RTC_M;
+ ret = twl4030_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+
+out:
+ return ret;
+}
+
+/*
+ * Gets current TWL4030 RTC alarm time.
+ */
+static int twl4030_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+ unsigned char rtc_data[ALL_TIME_REGS + 1];
+ int ret;
+
+ ret = twl4030_i2c_read(TWL4030_MODULE_RTC, rtc_data,
+ REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+ if (ret < 0) {
+ dev_err(dev, "rtc_read_alarm error %d\n", ret);
+ return ret;
+ }
+
+ /* some of these fields may be wildcard/"match all" */
+ alm->time.tm_sec = bcd2bin(rtc_data[0]);
+ alm->time.tm_min = bcd2bin(rtc_data[1]);
+ alm->time.tm_hour = bcd2bin(rtc_data[2]);
+ alm->time.tm_mday = bcd2bin(rtc_data[3]);
+ alm->time.tm_mon = bcd2bin(rtc_data[4]) - 1;
+ alm->time.tm_year = bcd2bin(rtc_data[5]) + 100;
+
+ /* report cached alarm enable state */
+ if (rtc_irq_bits & BIT_RTC_INTERRUPTS_REG_IT_ALARM_M)
+ alm->enabled = 1;
+
+ return ret;
+}
+
+static int twl4030_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm)
+{
+ unsigned char alarm_data[ALL_TIME_REGS + 1];
+ int ret;
+
+ ret = twl4030_rtc_alarm_irq_set_state(0);
+ if (ret)
+ goto out;
+
+ alarm_data[1] = bin2bcd(alm->time.tm_sec);
+ alarm_data[2] = bin2bcd(alm->time.tm_min);
+ alarm_data[3] = bin2bcd(alm->time.tm_hour);
+ alarm_data[4] = bin2bcd(alm->time.tm_mday);
+ alarm_data[5] = bin2bcd(alm->time.tm_mon + 1);
+ alarm_data[6] = bin2bcd(alm->time.tm_year - 100);
+
+ /* update all the alarm registers in one shot */
+ ret = twl4030_i2c_write(TWL4030_MODULE_RTC, alarm_data,
+ REG_ALARM_SECONDS_REG, ALL_TIME_REGS);
+ if (ret) {
+ dev_err(dev, "rtc_set_alarm error %d\n", ret);
+ goto out;
+ }
+
+ if (alm->enabled)
+ ret = twl4030_rtc_alarm_irq_set_state(1);
+out:
+ return ret;
+}
+
+#ifdef CONFIG_RTC_INTF_DEV
+
+static int twl4030_rtc_ioctl(struct device *dev, unsigned int cmd,
+ unsigned long arg)
+{
+ switch (cmd) {
+ case RTC_AIE_OFF:
+ return twl4030_rtc_alarm_irq_set_state(0);
+ case RTC_AIE_ON:
+ return twl4030_rtc_alarm_irq_set_state(1);
+ case RTC_UIE_OFF:
+ return twl4030_rtc_irq_set_state(0);
+ case RTC_UIE_ON:
+ return twl4030_rtc_irq_set_state(1);
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
+#else
+#define omap_rtc_ioctl NULL
+#endif
+
+static irqreturn_t twl4030_rtc_interrupt(int irq, void *rtc)
+{
+ unsigned long events = 0;
+ int ret = IRQ_NONE;
+ int res;
+ u8 rd_reg;
+
+#ifdef CONFIG_LOCKDEP
+ /* WORKAROUND for lockdep forcing IRQF_DISABLED on us, which
+ * we don't want and can't tolerate. Although it might be
+ * friendlier not to borrow this thread context...
+ */
+ local_irq_enable();
+#endif
+
+ res = twl4030_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
+ if (res)
+ goto out;
+ /*
+ * Figure out source of interrupt: ALARM or TIMER in RTC_STATUS_REG.
+ * only one (ALARM or RTC) interrupt source may be enabled
+ * at time, we also could check our results
+ * by reading RTS_INTERRUPTS_REGISTER[IT_TIMER,IT_ALARM]
+ */
+ if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
+ events |= RTC_IRQF | RTC_AF;
+ else
+ events |= RTC_IRQF | RTC_UF;
+
+ res = twl4030_rtc_write_u8(rd_reg | BIT_RTC_STATUS_REG_ALARM_M,
+ REG_RTC_STATUS_REG);
+ if (res)
+ goto out;
+
+ /* Clear on Read enabled. RTC_IT bit of TWL4030_INT_PWR_ISR1
+ * needs 2 reads to clear the interrupt. One read is done in
+ * do_twl4030_pwrirq(). Doing the second read, to clear
+ * the bit.
+ *
+ * FIXME the reason PWR_ISR1 needs an extra read is that
+ * RTC_IF retriggered until we cleared REG_ALARM_M above.
+ * But re-reading like this is a bad hack; by doing so we
+ * risk wrongly clearing status for some other IRQ (losing
+ * the interrupt). Be smarter about handling RTC_UF ...
+ */
+ res = twl4030_i2c_read_u8(TWL4030_MODULE_INT,
+ &rd_reg, TWL4030_INT_PWR_ISR1);
+ if (res)
+ goto out;
+
+ /* Notify RTC core on event */
+ rtc_update_irq(rtc, 1, events);
+
+ ret = IRQ_HANDLED;
+out:
+ return ret;
+}
+
+static struct rtc_class_ops twl4030_rtc_ops = {
+ .ioctl = twl4030_rtc_ioctl,
+ .read_time = twl4030_rtc_read_time,
+ .set_time = twl4030_rtc_set_time,
+ .read_alarm = twl4030_rtc_read_alarm,
+ .set_alarm = twl4030_rtc_set_alarm,
+};
+
+/*----------------------------------------------------------------------*/
+
+static int __devinit twl4030_rtc_probe(struct platform_device *pdev)
+{
+ struct rtc_device *rtc;
+ int ret = 0;
+ int irq = platform_get_irq(pdev, 0);
+ u8 rd_reg;
+
+ if (irq < 0)
+ return irq;
+
+ rtc = rtc_device_register(pdev->name,
+ &pdev->dev, &twl4030_rtc_ops, THIS_MODULE);
+ if (IS_ERR(rtc)) {
+ ret = -EINVAL;
+ dev_err(&pdev->dev, "can't register RTC device, err %ld\n",
+ PTR_ERR(rtc));
+ goto out0;
+
+ }
+
+ platform_set_drvdata(pdev, rtc);
+
+ ret = twl4030_rtc_read_u8(&rd_reg, REG_RTC_STATUS_REG);
+
+ if (ret < 0)
+ goto out1;
+
+ if (rd_reg & BIT_RTC_STATUS_REG_POWER_UP_M)
+ dev_warn(&pdev->dev, "Power up reset detected.\n");
+
+ if (rd_reg & BIT_RTC_STATUS_REG_ALARM_M)
+ dev_warn(&pdev->dev, "Pending Alarm interrupt detected.\n");
+
+ /* Clear RTC Power up reset and pending alarm interrupts */
+ ret = twl4030_rtc_write_u8(rd_reg, REG_RTC_STATUS_REG);
+ if (ret < 0)
+ goto out1;
+
+ ret = request_irq(irq, twl4030_rtc_interrupt,
+ IRQF_TRIGGER_RISING,
+ rtc->dev.bus_id, rtc);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "IRQ is not free.\n");
+ goto out1;
+ }
+
+ /* Check RTC module status, Enable if it is off */
+ ret = twl4030_rtc_read_u8(&rd_reg, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ goto out2;
+
+ if (!(rd_reg & BIT_RTC_CTRL_REG_STOP_RTC_M)) {
+ dev_info(&pdev->dev, "Enabling TWL4030-RTC.\n");
+ rd_reg = BIT_RTC_CTRL_REG_STOP_RTC_M;
+ ret = twl4030_rtc_write_u8(rd_reg, REG_RTC_CTRL_REG);
+ if (ret < 0)
+ goto out2;
+ }
+
+ /* init cached IRQ enable bits */
+ ret = twl4030_rtc_read_u8(&rtc_irq_bits, REG_RTC_INTERRUPTS_REG);
+ if (ret < 0)
+ goto out2;
+
+ return ret;
+
+
+out2:
+ free_irq(irq, rtc);
+out1:
+ rtc_device_unregister(rtc);
+out0:
+ return ret;
+}
+
+/*
+ * Disable all TWL4030 RTC module interrupts.
+ * Sets status flag to free.
+ */
+static int __devexit twl4030_rtc_remove(struct platform_device *pdev)
+{
+ /* leave rtc running, but disable irqs */
+ struct rtc_device *rtc = platform_get_drvdata(pdev);
+ int irq = platform_get_irq(pdev, 0);
+
+ mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+ mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
+
+ free_irq(irq, rtc);
+
+ rtc_device_unregister(rtc);
+ platform_set_drvdata(pdev, NULL);
+ return 0;
+}
+
+static void twl4030_rtc_shutdown(struct platform_device *pdev)
+{
+ mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+}
+
+#ifdef CONFIG_PM
+
+static unsigned char irqstat;
+
+static int twl4030_rtc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ irqstat = rtc_irq_bits;
+
+ /* REVISIT alarm may need to wake us from sleep */
+ mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
+ BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+ return 0;
+}
+
+static int twl4030_rtc_resume(struct platform_device *pdev)
+{
+ set_rtc_irq_bit(irqstat);
+ return 0;
+}
+
+#else
+#define twl4030_rtc_suspend NULL
+#define twl4030_rtc_resume NULL
+#endif
+
+MODULE_ALIAS("platform:twl4030_rtc");
+
+static struct platform_driver twl4030rtc_driver = {
+ .probe = twl4030_rtc_probe,
+ .remove = __devexit_p(twl4030_rtc_remove),
+ .shutdown = twl4030_rtc_shutdown,
+ .suspend = twl4030_rtc_suspend,
+ .resume = twl4030_rtc_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "twl4030_rtc",
+ },
+};
+
+static int __init twl4030_rtc_init(void)
+{
+ return platform_driver_register(&twl4030rtc_driver);
+}
+module_init(twl4030_rtc_init);
+
+static void __exit twl4030_rtc_exit(void)
+{
+ platform_driver_unregister(&twl4030rtc_driver);
+}
+module_exit(twl4030_rtc_exit);
+
+MODULE_AUTHOR("Texas Instruments, MontaVista Software");
+MODULE_LICENSE("GPL");
pbn_b0_4_1843200_200,
pbn_b0_8_1843200_200,
+ pbn_b0_1_4000000,
+
pbn_b0_bt_1_115200,
pbn_b0_bt_2_115200,
pbn_b0_bt_8_115200,
pbn_exsys_4055,
pbn_plx_romulus,
pbn_oxsemi,
+ pbn_oxsemi_1_4000000,
+ pbn_oxsemi_2_4000000,
+ pbn_oxsemi_4_4000000,
+ pbn_oxsemi_8_4000000,
pbn_intel_i960,
pbn_sgi_ioc3,
pbn_computone_4,
.base_baud = 1843200,
.uart_offset = 0x200,
},
+ [pbn_b0_1_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 1,
+ .base_baud = 4000000,
+ .uart_offset = 8,
+ },
[pbn_b0_bt_1_115200] = {
.flags = FL_BASE0|FL_BASE_BARS,
.base_baud = 115200,
.uart_offset = 8,
},
+ [pbn_oxsemi_1_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 1,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_oxsemi_2_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 2,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_oxsemi_4_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 4,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+ [pbn_oxsemi_8_4000000] = {
+ .flags = FL_BASE0,
+ .num_ports = 8,
+ .base_baud = 4000000,
+ .uart_offset = 0x200,
+ .first_offset = 0x1000,
+ },
+
/*
* EKF addition for i960 Boards form EKF with serial port.
board->first_offset == guessed->first_offset;
}
+/*
+ * Oxford Semiconductor Inc.
+ * Check that device is part of the Tornado range of devices, then determine
+ * the number of ports available on the device.
+ */
+static int pci_oxsemi_tornado_init(struct pci_dev *dev, struct pciserial_board *board)
+{
+ u8 __iomem *p;
+ unsigned long deviceID;
+ unsigned int number_uarts;
+
+ /* OxSemi Tornado devices are all 0xCxxx */
+ if (dev->vendor == PCI_VENDOR_ID_OXSEMI &&
+ (dev->device & 0xF000) != 0xC000)
+ return 0;
+
+ p = pci_iomap(dev, 0, 5);
+ if (p == NULL)
+ return -ENOMEM;
+
+ deviceID = ioread32(p);
+ /* Tornado device */
+ if (deviceID == 0x07000200) {
+ number_uarts = ioread8(p + 4);
+ board->num_ports = number_uarts;
+ printk(KERN_DEBUG
+ "%d ports detected on Oxford PCI Express device\n",
+ number_uarts);
+ }
+ pci_iounmap(dev, p);
+ return 0;
+}
+
struct serial_private *
pciserial_init_ports(struct pci_dev *dev, struct pciserial_board *board)
{
struct pci_serial_quirk *quirk;
int rc, nr_ports, i;
+ /*
+ * Find number of ports on board
+ */
+ if (dev->vendor == PCI_VENDOR_ID_OXSEMI ||
+ dev->vendor == PCI_VENDOR_ID_MAINPINE)
+ pci_oxsemi_tornado_init(dev, board);
+
nr_ports = board->num_ports;
/*
pbn_b0_bt_2_921600 },
/*
+ * Oxford Semiconductor Inc. Tornado PCI express device range.
+ */
+ { PCI_VENDOR_ID_OXSEMI, 0xc101, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc105, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc11b, /* OXPCIe952 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc11f, /* OXPCIe952 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc120, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc124, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc138, /* OXPCIe952 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc13d, /* OXPCIe952 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc140, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc141, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc144, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc145, /* OXPCIe952 1 Legacy UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_b0_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc158, /* OXPCIe952 2 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_2_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc15d, /* OXPCIe952 2 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_2_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc208, /* OXPCIe954 4 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_4_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc20d, /* OXPCIe954 4 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_4_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc308, /* OXPCIe958 8 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_8_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc30d, /* OXPCIe958 8 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_8_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc40b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc40f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc41b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc41f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc42b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc42f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc43b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc43f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc44b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc44f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc45b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc45f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc46b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc46f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc47b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc47f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc48b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc48f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc49b, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc49f, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4ab, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4af, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4bb, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4bf, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4cb, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_OXSEMI, 0xc4cf, /* OXPCIe200 1 Native UART */
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ /*
+ * Mainpine Inc. IQ Express "Rev3" utilizing OxSemi Tornado
+ */
+ { PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 1 Port V.34 Super-G3 Fax */
+ PCI_VENDOR_ID_MAINPINE, 0x4001, 0, 0,
+ pbn_oxsemi_1_4000000 },
+ { PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 2 Port V.34 Super-G3 Fax */
+ PCI_VENDOR_ID_MAINPINE, 0x4002, 0, 0,
+ pbn_oxsemi_2_4000000 },
+ { PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 4 Port V.34 Super-G3 Fax */
+ PCI_VENDOR_ID_MAINPINE, 0x4004, 0, 0,
+ pbn_oxsemi_4_4000000 },
+ { PCI_VENDOR_ID_MAINPINE, 0x4000, /* IQ Express 8 Port V.34 Super-G3 Fax */
+ PCI_VENDOR_ID_MAINPINE, 0x4008, 0, 0,
+ pbn_oxsemi_8_4000000 },
+ /*
* SBS Technologies, Inc. P-Octal and PMC-OCTPRO cards,
* from skokodyn@yahoo.com
*/
config SERIAL_SAMSUNG_DEBUG
bool "Samsung SoC serial debug"
- depends on SERIAL_SAMSUNG
+ depends on SERIAL_SAMSUNG && DEBUG_LL
help
Add support for debugging the serial driver. Since this is
generally being used as a console, we use our own output
source "drivers/usb/mon/Kconfig"
+source "drivers/usb/wusbcore/Kconfig"
+
source "drivers/usb/host/Kconfig"
source "drivers/usb/musb/Kconfig"
obj-$(CONFIG_USB_SL811_HCD) += host/
obj-$(CONFIG_USB_U132_HCD) += host/
obj-$(CONFIG_USB_R8A66597_HCD) += host/
+obj-$(CONFIG_USB_HWA_HCD) += host/
obj-$(CONFIG_USB_C67X00_HCD) += c67x00/
+obj-$(CONFIG_USB_WUSB) += wusbcore/
+
obj-$(CONFIG_USB_ACM) += class/
obj-$(CONFIG_USB_PRINTER) += class/
help
This driver enables support for the on-chip R8A66597 in the
SH7366 and SH7723 processors.
+
+config USB_WHCI_HCD
+ tristate "Wireless USB Host Controller Interface (WHCI) driver (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ depends on PCI && USB
+ select USB_WUSB
+ select UWB_WHCI
+ help
+ A driver for PCI-based Wireless USB Host Controllers that are
+ compliant with the WHCI specification.
+
+ To compile this driver a module, choose M here: the module
+ will be called "whci-hcd".
+
+config USB_HWA_HCD
+ tristate "Host Wire Adapter (HWA) driver (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ depends on USB
+ select USB_WUSB
+ select UWB_HWA
+ help
+ This driver enables you to connect Wireless USB devices to
+ your system using a Host Wire Adaptor USB dongle. This is an
+ UWB Radio Controller and WUSB Host Controller connected to
+ your machine via USB (specified in WUSB1.0).
+
+ To compile this driver a module, choose M here: the module
+ will be called "hwa-hc".
isp1760-objs := isp1760-hcd.o isp1760-if.o
+obj-$(CONFIG_USB_WHCI_HCD) += whci/
+
obj-$(CONFIG_PCI) += pci-quirks.o
obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o
+obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
--- /dev/null
+/*
+ * Host Wire Adapter:
+ * Driver glue, HWA-specific functions, bridges to WAHC and WUSBHC
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * The HWA driver is a simple layer that forwards requests to the WAHC
+ * (Wire Adater Host Controller) or WUSBHC (Wireless USB Host
+ * Controller) layers.
+ *
+ * Host Wire Adapter is the 'WUSB 1.0 standard' name for Wireless-USB
+ * Host Controller that is connected to your system via USB (a USB
+ * dongle that implements a USB host...). There is also a Device Wired
+ * Adaptor, DWA (Wireless USB hub) that uses the same mechanism for
+ * transferring data (it is after all a USB host connected via
+ * Wireless USB), we have a common layer called Wire Adapter Host
+ * Controller that does all the hard work. The WUSBHC (Wireless USB
+ * Host Controller) is the part common to WUSB Host Controllers, the
+ * HWA and the PCI-based one, that is implemented following the WHCI
+ * spec. All these layers are implemented in ../wusbcore.
+ *
+ * The main functions are hwahc_op_urb_{en,de}queue(), that pass the
+ * job of converting a URB to a Wire Adapter
+ *
+ * Entry points:
+ *
+ * hwahc_driver_*() Driver initialization, registration and
+ * teardown.
+ *
+ * hwahc_probe() New device came up, create an instance for
+ * it [from device enumeration].
+ *
+ * hwahc_disconnect() Remove device instance [from device
+ * enumeration].
+ *
+ * [__]hwahc_op_*() Host-Wire-Adaptor specific functions for
+ * starting/stopping/etc (some might be made also
+ * DWA).
+ */
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/workqueue.h>
+#include <linux/wait.h>
+#include <linux/completion.h>
+#include "../wusbcore/wa-hc.h"
+#include "../wusbcore/wusbhc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+struct hwahc {
+ struct wusbhc wusbhc; /* has to be 1st */
+ struct wahc wa;
+ u8 buffer[16]; /* for misc usb transactions */
+};
+
+/**
+ * FIXME should be wusbhc
+ *
+ * NOTE: we need to cache the Cluster ID because later...there is no
+ * way to get it :)
+ */
+static int __hwahc_set_cluster_id(struct hwahc *hwahc, u8 cluster_id)
+{
+ int result;
+ struct wusbhc *wusbhc = &hwahc->wusbhc;
+ struct wahc *wa = &hwahc->wa;
+ struct device *dev = &wa->usb_iface->dev;
+
+ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_SET_CLUSTER_ID,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ cluster_id,
+ wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0)
+ dev_err(dev, "Cannot set WUSB Cluster ID to 0x%02x: %d\n",
+ cluster_id, result);
+ else
+ wusbhc->cluster_id = cluster_id;
+ dev_info(dev, "Wireless USB Cluster ID set to 0x%02x\n", cluster_id);
+ return result;
+}
+
+static int __hwahc_op_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots)
+{
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+
+ return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_SET_NUM_DNTS,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ interval << 8 | slots,
+ wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Reset a WUSB host controller and wait for it to complete doing it.
+ *
+ * @usb_hcd: Pointer to WUSB Host Controller instance.
+ *
+ */
+static int hwahc_op_reset(struct usb_hcd *usb_hcd)
+{
+ int result;
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct device *dev = &hwahc->wa.usb_iface->dev;
+
+ d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+ mutex_lock(&wusbhc->mutex);
+ wa_nep_disarm(&hwahc->wa);
+ result = __wa_set_feature(&hwahc->wa, WA_RESET);
+ if (result < 0) {
+ dev_err(dev, "error commanding HC to reset: %d\n", result);
+ goto error_unlock;
+ }
+ d_printf(3, dev, "reset: waiting for device to change state\n");
+ result = __wa_wait_status(&hwahc->wa, WA_STATUS_RESETTING, 0);
+ if (result < 0) {
+ dev_err(dev, "error waiting for HC to reset: %d\n", result);
+ goto error_unlock;
+ }
+error_unlock:
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+ return result;
+}
+
+/*
+ * FIXME: break this function up
+ */
+static int hwahc_op_start(struct usb_hcd *usb_hcd)
+{
+ u8 addr;
+ int result;
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct device *dev = &hwahc->wa.usb_iface->dev;
+
+ /* Set up a Host Info WUSB Information Element */
+ d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+ result = -ENOSPC;
+ mutex_lock(&wusbhc->mutex);
+ /* Start the numbering from the top so that the bottom
+ * range of the unauth addr space is used for devices,
+ * the top for HCs; use 0xfe - RC# */
+ addr = wusb_cluster_id_get();
+ if (addr == 0)
+ goto error_cluster_id_get;
+ result = __hwahc_set_cluster_id(hwahc, addr);
+ if (result < 0)
+ goto error_set_cluster_id;
+
+ result = wa_nep_arm(&hwahc->wa, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "cannot listen to notifications: %d\n", result);
+ goto error_stop;
+ }
+ usb_hcd->uses_new_polling = 1;
+ usb_hcd->poll_rh = 1;
+ usb_hcd->state = HC_STATE_RUNNING;
+ result = 0;
+out:
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+ return result;
+
+error_stop:
+ __wa_stop(&hwahc->wa);
+error_set_cluster_id:
+ wusb_cluster_id_put(wusbhc->cluster_id);
+error_cluster_id_get:
+ goto out;
+
+}
+
+/*
+ * FIXME: break this function up
+ */
+static int __hwahc_op_wusbhc_start(struct wusbhc *wusbhc)
+{
+ int result;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct device *dev = &hwahc->wa.usb_iface->dev;
+
+ /* Set up a Host Info WUSB Information Element */
+ d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+ result = -ENOSPC;
+
+ result = __wa_set_feature(&hwahc->wa, WA_ENABLE);
+ if (result < 0) {
+ dev_err(dev, "error commanding HC to start: %d\n", result);
+ goto error_stop;
+ }
+ result = __wa_wait_status(&hwahc->wa, WA_ENABLE, WA_ENABLE);
+ if (result < 0) {
+ dev_err(dev, "error waiting for HC to start: %d\n", result);
+ goto error_stop;
+ }
+ result = 0;
+out:
+ d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+ return result;
+
+error_stop:
+ result = __wa_clear_feature(&hwahc->wa, WA_ENABLE);
+ goto out;
+}
+
+static int hwahc_op_suspend(struct usb_hcd *usb_hcd, pm_message_t msg)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ dev_err(wusbhc->dev, "%s (%p [%p], 0x%lx) UNIMPLEMENTED\n", __func__,
+ usb_hcd, hwahc, *(unsigned long *) &msg);
+ return -ENOSYS;
+}
+
+static int hwahc_op_resume(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+ usb_hcd, hwahc);
+ return -ENOSYS;
+}
+
+static void __hwahc_op_wusbhc_stop(struct wusbhc *wusbhc)
+{
+ int result;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct device *dev = &hwahc->wa.usb_iface->dev;
+
+ d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+ /* Nothing for now */
+ d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+ return;
+}
+
+/*
+ * No need to abort pipes, as when this is called, all the children
+ * has been disconnected and that has done it [through
+ * usb_disable_interface() -> usb_disable_endpoint() ->
+ * hwahc_op_ep_disable() - >rpipe_ep_disable()].
+ */
+static void hwahc_op_stop(struct usb_hcd *usb_hcd)
+{
+ int result;
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ struct device *dev = &wa->usb_iface->dev;
+
+ d_fnstart(4, dev, "(hwahc %p)\n", hwahc);
+ mutex_lock(&wusbhc->mutex);
+ wusbhc_stop(wusbhc);
+ wa_nep_disarm(&hwahc->wa);
+ result = __wa_stop(&hwahc->wa);
+ wusb_cluster_id_put(wusbhc->cluster_id);
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(4, dev, "(hwahc %p) = %d\n", hwahc, result);
+ return;
+}
+
+static int hwahc_op_get_frame_number(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+ usb_hcd, hwahc);
+ return -ENOSYS;
+}
+
+static int hwahc_op_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,
+ gfp_t gfp)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ return wa_urb_enqueue(&hwahc->wa, urb->ep, urb, gfp);
+}
+
+static int hwahc_op_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb,
+ int status)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ return wa_urb_dequeue(&hwahc->wa, urb);
+}
+
+/*
+ * Release resources allocated for an endpoint
+ *
+ * If there is an associated rpipe to this endpoint, go ahead and put it.
+ */
+static void hwahc_op_endpoint_disable(struct usb_hcd *usb_hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ rpipe_ep_disable(&hwahc->wa, ep);
+}
+
+/*
+ * Set the UWB MAS allocation for the WUSB cluster
+ *
+ * @stream_index: stream to use (-1 for cancelling the allocation)
+ * @mas: mas bitmap to use
+ */
+static int __hwahc_op_bwa_set(struct wusbhc *wusbhc, s8 stream_index,
+ const struct uwb_mas_bm *mas)
+{
+ int result;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ struct device *dev = &wa->usb_iface->dev;
+ u8 mas_le[UWB_NUM_MAS/8];
+
+ /* Set the stream index */
+ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_SET_STREAM_IDX,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ stream_index,
+ wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Cannot set WUSB stream index: %d\n", result);
+ goto out;
+ }
+ uwb_mas_bm_copy_le(mas_le, mas);
+ /* Set the MAS allocation */
+ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_SET_WUSB_MAS,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ mas_le, 32, 1000 /* FIXME: arbitrary */);
+ if (result < 0)
+ dev_err(dev, "Cannot set WUSB MAS allocation: %d\n", result);
+out:
+ return result;
+}
+
+/*
+ * Add an IE to the host's MMC
+ *
+ * @interval: See WUSB1.0[8.5.3.1]
+ * @repeat_cnt: See WUSB1.0[8.5.3.1]
+ * @handle: See WUSB1.0[8.5.3.1]
+ * @wuie: Pointer to the header of the WUSB IE data to add.
+ * MUST BE allocated in a kmalloc buffer (no stack or
+ * vmalloc).
+ *
+ * NOTE: the format of the WUSB IEs for MMCs are different to the
+ * normal MBOA MAC IEs (IE Id + Length in MBOA MAC vs. Length +
+ * Id in WUSB IEs). Standards...you gotta love'em.
+ */
+static int __hwahc_op_mmcie_add(struct wusbhc *wusbhc, u8 interval,
+ u8 repeat_cnt, u8 handle,
+ struct wuie_hdr *wuie)
+{
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+
+ return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_ADD_MMC_IE,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ interval << 8 | repeat_cnt,
+ handle << 8 | iface_no,
+ wuie, wuie->bLength, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Remove an IE to the host's MMC
+ *
+ * @handle: See WUSB1.0[8.5.3.1]
+ */
+static int __hwahc_op_mmcie_rm(struct wusbhc *wusbhc, u8 handle)
+{
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_REMOVE_MMC_IE,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, handle << 8 | iface_no,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Update device information for a given fake port
+ *
+ * @port_idx: Fake port to which device is connected (wusbhc index, not
+ * USB port number).
+ */
+static int __hwahc_op_dev_info_set(struct wusbhc *wusbhc,
+ struct wusb_dev *wusb_dev)
+{
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ struct hwa_dev_info *dev_info;
+ int ret;
+
+ /* fill out the Device Info buffer and send it */
+ dev_info = kzalloc(sizeof(struct hwa_dev_info), GFP_KERNEL);
+ if (!dev_info)
+ return -ENOMEM;
+ uwb_mas_bm_copy_le(dev_info->bmDeviceAvailability,
+ &wusb_dev->availability);
+ dev_info->bDeviceAddress = wusb_dev->addr;
+
+ /*
+ * If the descriptors haven't been read yet, use a default PHY
+ * rate of 53.3 Mbit/s only. The correct value will be used
+ * when this will be called again as part of the
+ * authentication process (which occurs after the descriptors
+ * have been read).
+ */
+ if (wusb_dev->wusb_cap_descr)
+ dev_info->wPHYRates = wusb_dev->wusb_cap_descr->wPHYRates;
+ else
+ dev_info->wPHYRates = cpu_to_le16(USB_WIRELESS_PHY_53);
+
+ ret = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ WUSB_REQ_SET_DEV_INFO,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, wusb_dev->port_idx << 8 | iface_no,
+ dev_info, sizeof(struct hwa_dev_info),
+ 1000 /* FIXME: arbitrary */);
+ kfree(dev_info);
+ return ret;
+}
+
+/*
+ * Set host's idea of which encryption (and key) method to use when
+ * talking to ad evice on a given port.
+ *
+ * If key is NULL, it means disable encryption for that "virtual port"
+ * (used when we disconnect).
+ */
+static int __hwahc_dev_set_key(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+ const void *key, size_t key_size,
+ u8 key_idx)
+{
+ int result = -ENOMEM;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ struct usb_key_descriptor *keyd;
+ size_t keyd_len;
+
+ keyd_len = sizeof(*keyd) + key_size;
+ keyd = kzalloc(keyd_len, GFP_KERNEL);
+ if (keyd == NULL)
+ return -ENOMEM;
+
+ keyd->bLength = keyd_len;
+ keyd->bDescriptorType = USB_DT_KEY;
+ keyd->tTKID[0] = (tkid >> 0) & 0xff;
+ keyd->tTKID[1] = (tkid >> 8) & 0xff;
+ keyd->tTKID[2] = (tkid >> 16) & 0xff;
+ memcpy(keyd->bKeyData, key, key_size);
+
+ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ USB_REQ_SET_DESCRIPTOR,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ USB_DT_KEY << 8 | key_idx,
+ port_idx << 8 | iface_no,
+ keyd, keyd_len, 1000 /* FIXME: arbitrary */);
+
+ memset(keyd, 0, sizeof(*keyd)); /* clear keys etc. */
+ kfree(keyd);
+ return result;
+}
+
+/*
+ * Set host's idea of which encryption (and key) method to use when
+ * talking to ad evice on a given port.
+ *
+ * If key is NULL, it means disable encryption for that "virtual port"
+ * (used when we disconnect).
+ */
+static int __hwahc_op_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+ const void *key, size_t key_size)
+{
+ int result = -ENOMEM;
+ struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ struct wahc *wa = &hwahc->wa;
+ u8 iface_no = wa->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ u8 encryption_value;
+
+ /* Tell the host which key to use to talk to the device */
+ if (key) {
+ u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_PTK,
+ WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+ result = __hwahc_dev_set_key(wusbhc, port_idx, tkid,
+ key, key_size, key_idx);
+ if (result < 0)
+ goto error_set_key;
+ encryption_value = wusbhc->ccm1_etd->bEncryptionValue;
+ } else {
+ /* FIXME: this should come from wusbhc->etd[UNSECURE].value */
+ encryption_value = 0;
+ }
+
+ /* Set the encryption type for commmunicating with the device */
+ result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ USB_REQ_SET_ENCRYPTION,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ encryption_value, port_idx << 8 | iface_no,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0)
+ dev_err(wusbhc->dev, "Can't set host's WUSB encryption for "
+ "port index %u to %s (value %d): %d\n", port_idx,
+ wusb_et_name(wusbhc->ccm1_etd->bEncryptionType),
+ wusbhc->ccm1_etd->bEncryptionValue, result);
+error_set_key:
+ return result;
+}
+
+/*
+ * Set host's GTK key
+ */
+static int __hwahc_op_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+ const void *key, size_t key_size)
+{
+ u8 key_idx = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_GTK,
+ WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+ return __hwahc_dev_set_key(wusbhc, 0, tkid, key, key_size, key_idx);
+}
+
+/*
+ * Get the Wire Adapter class-specific descriptor
+ *
+ * NOTE: this descriptor comes with the big bundled configuration
+ * descriptor that includes the interfaces' and endpoints', so
+ * we just look for it in the cached copy kept by the USB stack.
+ *
+ * NOTE2: We convert LE fields to CPU order.
+ */
+static int wa_fill_descr(struct wahc *wa)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+ char *itr;
+ struct usb_device *usb_dev = wa->usb_dev;
+ struct usb_descriptor_header *hdr;
+ struct usb_wa_descriptor *wa_descr;
+ size_t itr_size, actconfig_idx;
+
+ actconfig_idx = (usb_dev->actconfig - usb_dev->config) /
+ sizeof(usb_dev->config[0]);
+ itr = usb_dev->rawdescriptors[actconfig_idx];
+ itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+ while (itr_size >= sizeof(*hdr)) {
+ hdr = (struct usb_descriptor_header *) itr;
+ d_printf(3, dev, "Extra device descriptor: "
+ "type %02x/%u bytes @ %zu (%zu left)\n",
+ hdr->bDescriptorType, hdr->bLength,
+ (itr - usb_dev->rawdescriptors[actconfig_idx]),
+ itr_size);
+ if (hdr->bDescriptorType == USB_DT_WIRE_ADAPTER)
+ goto found;
+ itr += hdr->bLength;
+ itr_size -= hdr->bLength;
+ }
+ dev_err(dev, "cannot find Wire Adapter Class descriptor\n");
+ return -ENODEV;
+
+found:
+ result = -EINVAL;
+ if (hdr->bLength > itr_size) { /* is it available? */
+ dev_err(dev, "incomplete Wire Adapter Class descriptor "
+ "(%zu bytes left, %u needed)\n",
+ itr_size, hdr->bLength);
+ goto error;
+ }
+ if (hdr->bLength < sizeof(*wa->wa_descr)) {
+ dev_err(dev, "short Wire Adapter Class descriptor\n");
+ goto error;
+ }
+ wa->wa_descr = wa_descr = (struct usb_wa_descriptor *) hdr;
+ /* Make LE fields CPU order */
+ wa_descr->bcdWAVersion = le16_to_cpu(wa_descr->bcdWAVersion);
+ wa_descr->wNumRPipes = le16_to_cpu(wa_descr->wNumRPipes);
+ wa_descr->wRPipeMaxBlock = le16_to_cpu(wa_descr->wRPipeMaxBlock);
+ if (wa_descr->bcdWAVersion > 0x0100)
+ dev_warn(dev, "Wire Adapter v%d.%d newer than groked v1.0\n",
+ wa_descr->bcdWAVersion & 0xff00 >> 8,
+ wa_descr->bcdWAVersion & 0x00ff);
+ result = 0;
+error:
+ return result;
+}
+
+static struct hc_driver hwahc_hc_driver = {
+ .description = "hwa-hcd",
+ .product_desc = "Wireless USB HWA host controller",
+ .hcd_priv_size = sizeof(struct hwahc) - sizeof(struct usb_hcd),
+ .irq = NULL, /* FIXME */
+ .flags = HCD_USB2, /* FIXME */
+ .reset = hwahc_op_reset,
+ .start = hwahc_op_start,
+ .pci_suspend = hwahc_op_suspend,
+ .pci_resume = hwahc_op_resume,
+ .stop = hwahc_op_stop,
+ .get_frame_number = hwahc_op_get_frame_number,
+ .urb_enqueue = hwahc_op_urb_enqueue,
+ .urb_dequeue = hwahc_op_urb_dequeue,
+ .endpoint_disable = hwahc_op_endpoint_disable,
+
+ .hub_status_data = wusbhc_rh_status_data,
+ .hub_control = wusbhc_rh_control,
+ .bus_suspend = wusbhc_rh_suspend,
+ .bus_resume = wusbhc_rh_resume,
+ .start_port_reset = wusbhc_rh_start_port_reset,
+};
+
+static int hwahc_security_create(struct hwahc *hwahc)
+{
+ int result;
+ struct wusbhc *wusbhc = &hwahc->wusbhc;
+ struct usb_device *usb_dev = hwahc->wa.usb_dev;
+ struct device *dev = &usb_dev->dev;
+ struct usb_security_descriptor *secd;
+ struct usb_encryption_descriptor *etd;
+ void *itr, *top;
+ size_t itr_size, needed, bytes;
+ u8 index;
+ char buf[64];
+
+ /* Find the host's security descriptors in the config descr bundle */
+ index = (usb_dev->actconfig - usb_dev->config) /
+ sizeof(usb_dev->config[0]);
+ itr = usb_dev->rawdescriptors[index];
+ itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+ top = itr + itr_size;
+ result = __usb_get_extra_descriptor(usb_dev->rawdescriptors[index],
+ le16_to_cpu(usb_dev->actconfig->desc.wTotalLength),
+ USB_DT_SECURITY, (void **) &secd);
+ if (result == -1) {
+ dev_warn(dev, "BUG? WUSB host has no security descriptors\n");
+ return 0;
+ }
+ needed = sizeof(*secd);
+ if (top - (void *)secd < needed) {
+ dev_err(dev, "BUG? Not enough data to process security "
+ "descriptor header (%zu bytes left vs %zu needed)\n",
+ top - (void *) secd, needed);
+ return 0;
+ }
+ needed = le16_to_cpu(secd->wTotalLength);
+ if (top - (void *)secd < needed) {
+ dev_err(dev, "BUG? Not enough data to process security "
+ "descriptors (%zu bytes left vs %zu needed)\n",
+ top - (void *) secd, needed);
+ return 0;
+ }
+ /* Walk over the sec descriptors and store CCM1's on wusbhc */
+ itr = (void *) secd + sizeof(*secd);
+ top = (void *) secd + le16_to_cpu(secd->wTotalLength);
+ index = 0;
+ bytes = 0;
+ while (itr < top) {
+ etd = itr;
+ if (top - itr < sizeof(*etd)) {
+ dev_err(dev, "BUG: bad host security descriptor; "
+ "not enough data (%zu vs %zu left)\n",
+ top - itr, sizeof(*etd));
+ break;
+ }
+ if (etd->bLength < sizeof(*etd)) {
+ dev_err(dev, "BUG: bad host encryption descriptor; "
+ "descriptor is too short "
+ "(%zu vs %zu needed)\n",
+ (size_t)etd->bLength, sizeof(*etd));
+ break;
+ }
+ itr += etd->bLength;
+ bytes += snprintf(buf + bytes, sizeof(buf) - bytes,
+ "%s (0x%02x) ",
+ wusb_et_name(etd->bEncryptionType),
+ etd->bEncryptionValue);
+ wusbhc->ccm1_etd = etd;
+ }
+ dev_info(dev, "supported encryption types: %s\n", buf);
+ if (wusbhc->ccm1_etd == NULL) {
+ dev_err(dev, "E: host doesn't support CCM-1 crypto\n");
+ return 0;
+ }
+ /* Pretty print what we support */
+ return 0;
+}
+
+static void hwahc_security_release(struct hwahc *hwahc)
+{
+ /* nothing to do here so far... */
+}
+
+static int hwahc_create(struct hwahc *hwahc, struct usb_interface *iface)
+{
+ int result;
+ struct device *dev = &iface->dev;
+ struct wusbhc *wusbhc = &hwahc->wusbhc;
+ struct wahc *wa = &hwahc->wa;
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+
+ wa->usb_dev = usb_get_dev(usb_dev); /* bind the USB device */
+ wa->usb_iface = usb_get_intf(iface);
+ wusbhc->dev = dev;
+ wusbhc->uwb_rc = uwb_rc_get_by_grandpa(iface->dev.parent);
+ if (wusbhc->uwb_rc == NULL) {
+ result = -ENODEV;
+ dev_err(dev, "Cannot get associated UWB Host Controller\n");
+ goto error_rc_get;
+ }
+ result = wa_fill_descr(wa); /* Get the device descriptor */
+ if (result < 0)
+ goto error_fill_descriptor;
+ if (wa->wa_descr->bNumPorts > USB_MAXCHILDREN) {
+ dev_err(dev, "FIXME: USB_MAXCHILDREN too low for WUSB "
+ "adapter (%u ports)\n", wa->wa_descr->bNumPorts);
+ wusbhc->ports_max = USB_MAXCHILDREN;
+ } else {
+ wusbhc->ports_max = wa->wa_descr->bNumPorts;
+ }
+ wusbhc->mmcies_max = wa->wa_descr->bNumMMCIEs;
+ wusbhc->start = __hwahc_op_wusbhc_start;
+ wusbhc->stop = __hwahc_op_wusbhc_stop;
+ wusbhc->mmcie_add = __hwahc_op_mmcie_add;
+ wusbhc->mmcie_rm = __hwahc_op_mmcie_rm;
+ wusbhc->dev_info_set = __hwahc_op_dev_info_set;
+ wusbhc->bwa_set = __hwahc_op_bwa_set;
+ wusbhc->set_num_dnts = __hwahc_op_set_num_dnts;
+ wusbhc->set_ptk = __hwahc_op_set_ptk;
+ wusbhc->set_gtk = __hwahc_op_set_gtk;
+ result = hwahc_security_create(hwahc);
+ if (result < 0) {
+ dev_err(dev, "Can't initialize security: %d\n", result);
+ goto error_security_create;
+ }
+ wa->wusb = wusbhc; /* FIXME: ugly, need to fix */
+ result = wusbhc_create(&hwahc->wusbhc);
+ if (result < 0) {
+ dev_err(dev, "Can't create WUSB HC structures: %d\n", result);
+ goto error_wusbhc_create;
+ }
+ result = wa_create(&hwahc->wa, iface);
+ if (result < 0)
+ goto error_wa_create;
+ return 0;
+
+error_wa_create:
+ wusbhc_destroy(&hwahc->wusbhc);
+error_wusbhc_create:
+ /* WA Descr fill allocs no resources */
+error_security_create:
+error_fill_descriptor:
+ uwb_rc_put(wusbhc->uwb_rc);
+error_rc_get:
+ usb_put_intf(iface);
+ usb_put_dev(usb_dev);
+ return result;
+}
+
+static void hwahc_destroy(struct hwahc *hwahc)
+{
+ struct wusbhc *wusbhc = &hwahc->wusbhc;
+
+ d_fnstart(1, NULL, "(hwahc %p)\n", hwahc);
+ mutex_lock(&wusbhc->mutex);
+ __wa_destroy(&hwahc->wa);
+ wusbhc_destroy(&hwahc->wusbhc);
+ hwahc_security_release(hwahc);
+ hwahc->wusbhc.dev = NULL;
+ uwb_rc_put(wusbhc->uwb_rc);
+ usb_put_intf(hwahc->wa.usb_iface);
+ usb_put_dev(hwahc->wa.usb_dev);
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(1, NULL, "(hwahc %p) = void\n", hwahc);
+}
+
+static void hwahc_init(struct hwahc *hwahc)
+{
+ wa_init(&hwahc->wa);
+}
+
+static int hwahc_probe(struct usb_interface *usb_iface,
+ const struct usb_device_id *id)
+{
+ int result;
+ struct usb_hcd *usb_hcd;
+ struct wusbhc *wusbhc;
+ struct hwahc *hwahc;
+ struct device *dev = &usb_iface->dev;
+
+ d_fnstart(4, dev, "(%p, %p)\n", usb_iface, id);
+ result = -ENOMEM;
+ usb_hcd = usb_create_hcd(&hwahc_hc_driver, &usb_iface->dev, "wusb-hwa");
+ if (usb_hcd == NULL) {
+ dev_err(dev, "unable to allocate instance\n");
+ goto error_alloc;
+ }
+ usb_hcd->wireless = 1;
+ usb_hcd->flags |= HCD_FLAG_SAW_IRQ;
+ wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+ hwahc_init(hwahc);
+ result = hwahc_create(hwahc, usb_iface);
+ if (result < 0) {
+ dev_err(dev, "Cannot initialize internals: %d\n", result);
+ goto error_hwahc_create;
+ }
+ result = usb_add_hcd(usb_hcd, 0, 0);
+ if (result < 0) {
+ dev_err(dev, "Cannot add HCD: %d\n", result);
+ goto error_add_hcd;
+ }
+ result = wusbhc_b_create(&hwahc->wusbhc);
+ if (result < 0) {
+ dev_err(dev, "Cannot setup phase B of WUSBHC: %d\n", result);
+ goto error_wusbhc_b_create;
+ }
+ d_fnend(4, dev, "(%p, %p) = 0\n", usb_iface, id);
+ return 0;
+
+error_wusbhc_b_create:
+ usb_remove_hcd(usb_hcd);
+error_add_hcd:
+ hwahc_destroy(hwahc);
+error_hwahc_create:
+ usb_put_hcd(usb_hcd);
+error_alloc:
+ d_fnend(4, dev, "(%p, %p) = %d\n", usb_iface, id, result);
+ return result;
+}
+
+static void hwahc_disconnect(struct usb_interface *usb_iface)
+{
+ struct usb_hcd *usb_hcd;
+ struct wusbhc *wusbhc;
+ struct hwahc *hwahc;
+
+ usb_hcd = usb_get_intfdata(usb_iface);
+ wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ hwahc = container_of(wusbhc, struct hwahc, wusbhc);
+
+ d_fnstart(1, NULL, "(hwahc %p [usb_iface %p])\n", hwahc, usb_iface);
+ wusbhc_b_destroy(&hwahc->wusbhc);
+ usb_remove_hcd(usb_hcd);
+ hwahc_destroy(hwahc);
+ usb_put_hcd(usb_hcd);
+ d_fnend(1, NULL, "(hwahc %p [usb_iface %p]) = void\n", hwahc,
+ usb_iface);
+}
+
+/** USB device ID's that we handle */
+static struct usb_device_id hwahc_id_table[] = {
+ /* FIXME: use class labels for this */
+ { USB_INTERFACE_INFO(0xe0, 0x02, 0x01), },
+ {},
+};
+MODULE_DEVICE_TABLE(usb, hwahc_id_table);
+
+static struct usb_driver hwahc_driver = {
+ .name = "hwa-hc",
+ .probe = hwahc_probe,
+ .disconnect = hwahc_disconnect,
+ .id_table = hwahc_id_table,
+};
+
+static int __init hwahc_driver_init(void)
+{
+ int result;
+ result = usb_register(&hwahc_driver);
+ if (result < 0) {
+ printk(KERN_ERR "WA-CDS: Cannot register USB driver: %d\n",
+ result);
+ goto error_usb_register;
+ }
+ return 0;
+
+error_usb_register:
+ return result;
+
+}
+module_init(hwahc_driver_init);
+
+static void __exit hwahc_driver_exit(void)
+{
+ usb_deregister(&hwahc_driver);
+}
+module_exit(hwahc_driver_exit);
+
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Host Wired Adapter USB Host Control Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+obj-$(CONFIG_USB_WHCI_HCD) += whci-hcd.o
+
+whci-hcd-y := \
+ asl.o \
+ hcd.o \
+ hw.o \
+ init.o \
+ int.o \
+ pzl.o \
+ qset.o \
+ wusb.o
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) asynchronous schedule management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 4
+static void dump_asl(struct whc *whc, const char *tag)
+{
+ struct device *dev = &whc->umc->dev;
+ struct whc_qset *qset;
+
+ d_printf(4, dev, "ASL %s\n", tag);
+
+ list_for_each_entry(qset, &whc->async_list, list_node) {
+ dump_qset(qset, dev);
+ }
+}
+#else
+static inline void dump_asl(struct whc *whc, const char *tag)
+{
+}
+#endif
+
+
+static void qset_get_next_prev(struct whc *whc, struct whc_qset *qset,
+ struct whc_qset **next, struct whc_qset **prev)
+{
+ struct list_head *n, *p;
+
+ BUG_ON(list_empty(&whc->async_list));
+
+ n = qset->list_node.next;
+ if (n == &whc->async_list)
+ n = n->next;
+ p = qset->list_node.prev;
+ if (p == &whc->async_list)
+ p = p->prev;
+
+ *next = container_of(n, struct whc_qset, list_node);
+ *prev = container_of(p, struct whc_qset, list_node);
+
+}
+
+static void asl_qset_insert_begin(struct whc *whc, struct whc_qset *qset)
+{
+ list_move(&qset->list_node, &whc->async_list);
+ qset->in_sw_list = true;
+}
+
+static void asl_qset_insert(struct whc *whc, struct whc_qset *qset)
+{
+ struct whc_qset *next, *prev;
+
+ qset_clear(whc, qset);
+
+ /* Link into ASL. */
+ qset_get_next_prev(whc, qset, &next, &prev);
+ whc_qset_set_link_ptr(&qset->qh.link, next->qset_dma);
+ whc_qset_set_link_ptr(&prev->qh.link, qset->qset_dma);
+ qset->in_hw_list = true;
+}
+
+static void asl_qset_remove(struct whc *whc, struct whc_qset *qset)
+{
+ struct whc_qset *prev, *next;
+
+ qset_get_next_prev(whc, qset, &next, &prev);
+
+ list_move(&qset->list_node, &whc->async_removed_list);
+ qset->in_sw_list = false;
+
+ /*
+ * No more qsets in the ASL? The caller must stop the ASL as
+ * it's no longer valid.
+ */
+ if (list_empty(&whc->async_list))
+ return;
+
+ /* Remove from ASL. */
+ whc_qset_set_link_ptr(&prev->qh.link, next->qset_dma);
+ qset->in_hw_list = false;
+}
+
+/**
+ * process_qset - process any recently inactivated or halted qTDs in a
+ * qset.
+ *
+ * After inactive qTDs are removed, new qTDs can be added if the
+ * urb queue still contains URBs.
+ *
+ * Returns any additional WUSBCMD bits for the ASL sync command (i.e.,
+ * WUSBCMD_ASYNC_QSET_RM if a halted qset was removed).
+ */
+static uint32_t process_qset(struct whc *whc, struct whc_qset *qset)
+{
+ enum whc_update update = 0;
+ uint32_t status = 0;
+
+ while (qset->ntds) {
+ struct whc_qtd *td;
+ int t;
+
+ t = qset->td_start;
+ td = &qset->qtd[qset->td_start];
+ status = le32_to_cpu(td->status);
+
+ /*
+ * Nothing to do with a still active qTD.
+ */
+ if (status & QTD_STS_ACTIVE)
+ break;
+
+ if (status & QTD_STS_HALTED) {
+ /* Ug, an error. */
+ process_halted_qtd(whc, qset, td);
+ goto done;
+ }
+
+ /* Mmm, a completed qTD. */
+ process_inactive_qtd(whc, qset, td);
+ }
+
+ update |= qset_add_qtds(whc, qset);
+
+done:
+ /*
+ * Remove this qset from the ASL if requested, but only if has
+ * no qTDs.
+ */
+ if (qset->remove && qset->ntds == 0) {
+ asl_qset_remove(whc, qset);
+ update |= WHC_UPDATE_REMOVED;
+ }
+ return update;
+}
+
+void asl_start(struct whc *whc)
+{
+ struct whc_qset *qset;
+
+ qset = list_first_entry(&whc->async_list, struct whc_qset, list_node);
+
+ le_writeq(qset->qset_dma | QH_LINK_NTDS(8), whc->base + WUSBASYNCLISTADDR);
+
+ whc_write_wusbcmd(whc, WUSBCMD_ASYNC_EN, WUSBCMD_ASYNC_EN);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+ WUSBSTS_ASYNC_SCHED, WUSBSTS_ASYNC_SCHED,
+ 1000, "start ASL");
+}
+
+void asl_stop(struct whc *whc)
+{
+ whc_write_wusbcmd(whc, WUSBCMD_ASYNC_EN, 0);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+ WUSBSTS_ASYNC_SCHED, 0,
+ 1000, "stop ASL");
+}
+
+void asl_update(struct whc *whc, uint32_t wusbcmd)
+{
+ whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+ wait_event(whc->async_list_wq,
+ (le_readl(whc->base + WUSBCMD) & WUSBCMD_ASYNC_UPDATED) == 0);
+}
+
+/**
+ * scan_async_work - scan the ASL for qsets to process.
+ *
+ * Process each qset in the ASL in turn and then signal the WHC that
+ * the ASL has been updated.
+ *
+ * Then start, stop or update the asynchronous schedule as required.
+ */
+void scan_async_work(struct work_struct *work)
+{
+ struct whc *whc = container_of(work, struct whc, async_work);
+ struct whc_qset *qset, *t;
+ enum whc_update update = 0;
+
+ spin_lock_irq(&whc->lock);
+
+ dump_asl(whc, "before processing");
+
+ /*
+ * Transerve the software list backwards so new qsets can be
+ * safely inserted into the ASL without making it non-circular.
+ */
+ list_for_each_entry_safe_reverse(qset, t, &whc->async_list, list_node) {
+ if (!qset->in_hw_list) {
+ asl_qset_insert(whc, qset);
+ update |= WHC_UPDATE_ADDED;
+ }
+
+ update |= process_qset(whc, qset);
+ }
+
+ dump_asl(whc, "after processing");
+
+ spin_unlock_irq(&whc->lock);
+
+ if (update) {
+ uint32_t wusbcmd = WUSBCMD_ASYNC_UPDATED | WUSBCMD_ASYNC_SYNCED_DB;
+ if (update & WHC_UPDATE_REMOVED)
+ wusbcmd |= WUSBCMD_ASYNC_QSET_RM;
+ asl_update(whc, wusbcmd);
+ }
+
+ /*
+ * Now that the ASL is updated, complete the removal of any
+ * removed qsets.
+ */
+ spin_lock(&whc->lock);
+
+ list_for_each_entry_safe(qset, t, &whc->async_removed_list, list_node) {
+ qset_remove_complete(whc, qset);
+ }
+
+ spin_unlock(&whc->lock);
+}
+
+/**
+ * asl_urb_enqueue - queue an URB onto the asynchronous list (ASL).
+ * @whc: the WHCI host controller
+ * @urb: the URB to enqueue
+ * @mem_flags: flags for any memory allocations
+ *
+ * The qset for the endpoint is obtained and the urb queued on to it.
+ *
+ * Work is scheduled to update the hardware's view of the ASL.
+ */
+int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags)
+{
+ struct whc_qset *qset;
+ int err;
+ unsigned long flags;
+
+ spin_lock_irqsave(&whc->lock, flags);
+
+ qset = get_qset(whc, urb, GFP_ATOMIC);
+ if (qset == NULL)
+ err = -ENOMEM;
+ else
+ err = qset_add_urb(whc, qset, urb, GFP_ATOMIC);
+ if (!err) {
+ usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb);
+ if (!qset->in_sw_list)
+ asl_qset_insert_begin(whc, qset);
+ }
+
+ spin_unlock_irqrestore(&whc->lock, flags);
+
+ if (!err)
+ queue_work(whc->workqueue, &whc->async_work);
+
+ return 0;
+}
+
+/**
+ * asl_urb_dequeue - remove an URB (qset) from the async list.
+ * @whc: the WHCI host controller
+ * @urb: the URB to dequeue
+ * @status: the current status of the URB
+ *
+ * URBs that do yet have qTDs can simply be removed from the software
+ * queue, otherwise the qset must be removed from the ASL so the qTDs
+ * can be removed.
+ */
+int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status)
+{
+ struct whc_urb *wurb = urb->hcpriv;
+ struct whc_qset *qset = wurb->qset;
+ struct whc_std *std, *t;
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&whc->lock, flags);
+
+ ret = usb_hcd_check_unlink_urb(&whc->wusbhc.usb_hcd, urb, status);
+ if (ret < 0)
+ goto out;
+
+ list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+ if (std->urb == urb)
+ qset_free_std(whc, std);
+ else
+ std->qtd = NULL; /* so this std is re-added when the qset is */
+ }
+
+ asl_qset_remove(whc, qset);
+ wurb->status = status;
+ wurb->is_async = true;
+ queue_work(whc->workqueue, &wurb->dequeue_work);
+
+out:
+ spin_unlock_irqrestore(&whc->lock, flags);
+
+ return ret;
+}
+
+/**
+ * asl_qset_delete - delete a qset from the ASL
+ */
+void asl_qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+ qset->remove = 1;
+ queue_work(whc->workqueue, &whc->async_work);
+ qset_delete(whc, qset);
+}
+
+/**
+ * asl_init - initialize the asynchronous schedule list
+ *
+ * A dummy qset with no qTDs is added to the ASL to simplify removing
+ * qsets (no need to stop the ASL when the last qset is removed).
+ */
+int asl_init(struct whc *whc)
+{
+ struct whc_qset *qset;
+
+ qset = qset_alloc(whc, GFP_KERNEL);
+ if (qset == NULL)
+ return -ENOMEM;
+
+ asl_qset_insert_begin(whc, qset);
+ asl_qset_insert(whc, qset);
+
+ return 0;
+}
+
+/**
+ * asl_clean_up - free ASL resources
+ *
+ * The ASL is stopped and empty except for the dummy qset.
+ */
+void asl_clean_up(struct whc *whc)
+{
+ struct whc_qset *qset;
+
+ if (!list_empty(&whc->async_list)) {
+ qset = list_first_entry(&whc->async_list, struct whc_qset, list_node);
+ list_del(&qset->list_node);
+ qset_free(whc, qset);
+ }
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) driver.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+/*
+ * One time initialization.
+ *
+ * Nothing to do here.
+ */
+static int whc_reset(struct usb_hcd *usb_hcd)
+{
+ return 0;
+}
+
+/*
+ * Start the wireless host controller.
+ *
+ * Start device notification.
+ *
+ * Put hc into run state, set DNTS parameters.
+ */
+static int whc_start(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ u8 bcid;
+ int ret;
+
+ mutex_lock(&wusbhc->mutex);
+
+ le_writel(WUSBINTR_GEN_CMD_DONE
+ | WUSBINTR_HOST_ERR
+ | WUSBINTR_ASYNC_SCHED_SYNCED
+ | WUSBINTR_DNTS_INT
+ | WUSBINTR_ERR_INT
+ | WUSBINTR_INT,
+ whc->base + WUSBINTR);
+
+ /* set cluster ID */
+ bcid = wusb_cluster_id_get();
+ ret = whc_set_cluster_id(whc, bcid);
+ if (ret < 0)
+ goto out;
+ wusbhc->cluster_id = bcid;
+
+ /* start HC */
+ whc_write_wusbcmd(whc, WUSBCMD_RUN, WUSBCMD_RUN);
+
+ usb_hcd->uses_new_polling = 1;
+ usb_hcd->poll_rh = 1;
+ usb_hcd->state = HC_STATE_RUNNING;
+
+out:
+ mutex_unlock(&wusbhc->mutex);
+ return ret;
+}
+
+
+/*
+ * Stop the wireless host controller.
+ *
+ * Stop device notification.
+ *
+ * Wait for pending transfer to stop? Put hc into stop state?
+ */
+static void whc_stop(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+
+ mutex_lock(&wusbhc->mutex);
+
+ wusbhc_stop(wusbhc);
+
+ /* stop HC */
+ le_writel(0, whc->base + WUSBINTR);
+ whc_write_wusbcmd(whc, WUSBCMD_RUN, 0);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+ WUSBSTS_HCHALTED, WUSBSTS_HCHALTED,
+ 100, "HC to halt");
+
+ wusb_cluster_id_put(wusbhc->cluster_id);
+
+ mutex_unlock(&wusbhc->mutex);
+}
+
+static int whc_get_frame_number(struct usb_hcd *usb_hcd)
+{
+ /* Frame numbers are not applicable to WUSB. */
+ return -ENOSYS;
+}
+
+
+/*
+ * Queue an URB to the ASL or PZL
+ */
+static int whc_urb_enqueue(struct usb_hcd *usb_hcd, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ int ret;
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_INTERRUPT:
+ ret = pzl_urb_enqueue(whc, urb, mem_flags);
+ break;
+ case PIPE_ISOCHRONOUS:
+ dev_err(&whc->umc->dev, "isochronous transfers unsupported\n");
+ ret = -ENOTSUPP;
+ break;
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ default:
+ ret = asl_urb_enqueue(whc, urb, mem_flags);
+ break;
+ };
+
+ return ret;
+}
+
+/*
+ * Remove a queued URB from the ASL or PZL.
+ */
+static int whc_urb_dequeue(struct usb_hcd *usb_hcd, struct urb *urb, int status)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ int ret;
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_INTERRUPT:
+ ret = pzl_urb_dequeue(whc, urb, status);
+ break;
+ case PIPE_ISOCHRONOUS:
+ ret = -ENOTSUPP;
+ break;
+ case PIPE_CONTROL:
+ case PIPE_BULK:
+ default:
+ ret = asl_urb_dequeue(whc, urb, status);
+ break;
+ };
+
+ return ret;
+}
+
+/*
+ * Wait for all URBs to the endpoint to be completed, then delete the
+ * qset.
+ */
+static void whc_endpoint_disable(struct usb_hcd *usb_hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ struct whc_qset *qset;
+
+ qset = ep->hcpriv;
+ if (qset) {
+ ep->hcpriv = NULL;
+ if (usb_endpoint_xfer_bulk(&ep->desc)
+ || usb_endpoint_xfer_control(&ep->desc))
+ asl_qset_delete(whc, qset);
+ else
+ pzl_qset_delete(whc, qset);
+ }
+}
+
+static struct hc_driver whc_hc_driver = {
+ .description = "whci-hcd",
+ .product_desc = "Wireless host controller",
+ .hcd_priv_size = sizeof(struct whc) - sizeof(struct usb_hcd),
+ .irq = whc_int_handler,
+ .flags = HCD_USB2,
+
+ .reset = whc_reset,
+ .start = whc_start,
+ .stop = whc_stop,
+ .get_frame_number = whc_get_frame_number,
+ .urb_enqueue = whc_urb_enqueue,
+ .urb_dequeue = whc_urb_dequeue,
+ .endpoint_disable = whc_endpoint_disable,
+
+ .hub_status_data = wusbhc_rh_status_data,
+ .hub_control = wusbhc_rh_control,
+ .bus_suspend = wusbhc_rh_suspend,
+ .bus_resume = wusbhc_rh_resume,
+ .start_port_reset = wusbhc_rh_start_port_reset,
+};
+
+static int whc_probe(struct umc_dev *umc)
+{
+ int ret = -ENOMEM;
+ struct usb_hcd *usb_hcd;
+ struct wusbhc *wusbhc = NULL;
+ struct whc *whc = NULL;
+ struct device *dev = &umc->dev;
+
+ usb_hcd = usb_create_hcd(&whc_hc_driver, dev, "whci");
+ if (usb_hcd == NULL) {
+ dev_err(dev, "unable to create hcd\n");
+ goto error;
+ }
+
+ usb_hcd->wireless = 1;
+
+ wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ whc = wusbhc_to_whc(wusbhc);
+ whc->umc = umc;
+
+ ret = whc_init(whc);
+ if (ret)
+ goto error;
+
+ wusbhc->dev = dev;
+ wusbhc->uwb_rc = uwb_rc_get_by_grandpa(umc->dev.parent);
+ if (!wusbhc->uwb_rc) {
+ ret = -ENODEV;
+ dev_err(dev, "cannot get radio controller\n");
+ goto error;
+ }
+
+ if (whc->n_devices > USB_MAXCHILDREN) {
+ dev_warn(dev, "USB_MAXCHILDREN too low for WUSB adapter (%u ports)\n",
+ whc->n_devices);
+ wusbhc->ports_max = USB_MAXCHILDREN;
+ } else
+ wusbhc->ports_max = whc->n_devices;
+ wusbhc->mmcies_max = whc->n_mmc_ies;
+ wusbhc->start = whc_wusbhc_start;
+ wusbhc->stop = whc_wusbhc_stop;
+ wusbhc->mmcie_add = whc_mmcie_add;
+ wusbhc->mmcie_rm = whc_mmcie_rm;
+ wusbhc->dev_info_set = whc_dev_info_set;
+ wusbhc->bwa_set = whc_bwa_set;
+ wusbhc->set_num_dnts = whc_set_num_dnts;
+ wusbhc->set_ptk = whc_set_ptk;
+ wusbhc->set_gtk = whc_set_gtk;
+
+ ret = wusbhc_create(wusbhc);
+ if (ret)
+ goto error_wusbhc_create;
+
+ ret = usb_add_hcd(usb_hcd, whc->umc->irq, IRQF_SHARED);
+ if (ret) {
+ dev_err(dev, "cannot add HCD: %d\n", ret);
+ goto error_usb_add_hcd;
+ }
+
+ ret = wusbhc_b_create(wusbhc);
+ if (ret) {
+ dev_err(dev, "WUSBHC phase B setup failed: %d\n", ret);
+ goto error_wusbhc_b_create;
+ }
+
+ return 0;
+
+error_wusbhc_b_create:
+ usb_remove_hcd(usb_hcd);
+error_usb_add_hcd:
+ wusbhc_destroy(wusbhc);
+error_wusbhc_create:
+ uwb_rc_put(wusbhc->uwb_rc);
+error:
+ whc_clean_up(whc);
+ if (usb_hcd)
+ usb_put_hcd(usb_hcd);
+ return ret;
+}
+
+
+static void whc_remove(struct umc_dev *umc)
+{
+ struct usb_hcd *usb_hcd = dev_get_drvdata(&umc->dev);
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+
+ if (usb_hcd) {
+ wusbhc_b_destroy(wusbhc);
+ usb_remove_hcd(usb_hcd);
+ wusbhc_destroy(wusbhc);
+ uwb_rc_put(wusbhc->uwb_rc);
+ whc_clean_up(whc);
+ usb_put_hcd(usb_hcd);
+ }
+}
+
+static struct umc_driver whci_hc_driver = {
+ .name = "whci-hcd",
+ .cap_id = UMC_CAP_ID_WHCI_WUSB_HC,
+ .probe = whc_probe,
+ .remove = whc_remove,
+};
+
+static int __init whci_hc_driver_init(void)
+{
+ return umc_driver_register(&whci_hc_driver);
+}
+module_init(whci_hc_driver_init);
+
+static void __exit whci_hc_driver_exit(void)
+{
+ umc_driver_unregister(&whci_hc_driver);
+}
+module_exit(whci_hc_driver_exit);
+
+/* PCI device ID's that we handle (so it gets loaded) */
+static struct pci_device_id whci_hcd_id_table[] = {
+ { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+ { /* empty last entry */ }
+};
+MODULE_DEVICE_TABLE(pci, whci_hcd_id_table);
+
+MODULE_DESCRIPTION("WHCI Wireless USB host controller driver");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) hardware access helpers.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val)
+{
+ unsigned long flags;
+ u32 cmd;
+
+ spin_lock_irqsave(&whc->lock, flags);
+
+ cmd = le_readl(whc->base + WUSBCMD);
+ cmd = (cmd & ~mask) | val;
+ le_writel(cmd, whc->base + WUSBCMD);
+
+ spin_unlock_irqrestore(&whc->lock, flags);
+}
+
+/**
+ * whc_do_gencmd - start a generic command via the WUSBGENCMDSTS register
+ * @whc: the WHCI HC
+ * @cmd: command to start.
+ * @params: parameters for the command (the WUSBGENCMDPARAMS register value).
+ * @addr: pointer to any data for the command (may be NULL).
+ * @len: length of the data (if any).
+ */
+int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len)
+{
+ unsigned long flags;
+ dma_addr_t dma_addr;
+ int t;
+
+ mutex_lock(&whc->mutex);
+
+ /* Wait for previous command to complete. */
+ t = wait_event_timeout(whc->cmd_wq,
+ (le_readl(whc->base + WUSBGENCMDSTS) & WUSBGENCMDSTS_ACTIVE) == 0,
+ WHC_GENCMD_TIMEOUT_MS);
+ if (t == 0) {
+ dev_err(&whc->umc->dev, "generic command timeout (%04x/%04x)\n",
+ le_readl(whc->base + WUSBGENCMDSTS),
+ le_readl(whc->base + WUSBGENCMDPARAMS));
+ return -ETIMEDOUT;
+ }
+
+ if (addr) {
+ memcpy(whc->gen_cmd_buf, addr, len);
+ dma_addr = whc->gen_cmd_buf_dma;
+ } else
+ dma_addr = 0;
+
+ /* Poke registers to start cmd. */
+ spin_lock_irqsave(&whc->lock, flags);
+
+ le_writel(params, whc->base + WUSBGENCMDPARAMS);
+ le_writeq(dma_addr, whc->base + WUSBGENADDR);
+
+ le_writel(WUSBGENCMDSTS_ACTIVE | WUSBGENCMDSTS_IOC | cmd,
+ whc->base + WUSBGENCMDSTS);
+
+ spin_unlock_irqrestore(&whc->lock, flags);
+
+ mutex_unlock(&whc->mutex);
+
+ return 0;
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) initialization.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+/*
+ * Reset the host controller.
+ */
+static void whc_hw_reset(struct whc *whc)
+{
+ le_writel(WUSBCMD_WHCRESET, whc->base + WUSBCMD);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBCMD, WUSBCMD_WHCRESET, 0,
+ 100, "reset");
+}
+
+static void whc_hw_init_di_buf(struct whc *whc)
+{
+ int d;
+
+ /* Disable all entries in the Device Information buffer. */
+ for (d = 0; d < whc->n_devices; d++)
+ whc->di_buf[d].addr_sec_info = WHC_DI_DISABLE;
+
+ le_writeq(whc->di_buf_dma, whc->base + WUSBDEVICEINFOADDR);
+}
+
+static void whc_hw_init_dn_buf(struct whc *whc)
+{
+ /* Clear the Device Notification buffer to ensure the V (valid)
+ * bits are clear. */
+ memset(whc->dn_buf, 0, 4096);
+
+ le_writeq(whc->dn_buf_dma, whc->base + WUSBDNTSBUFADDR);
+}
+
+int whc_init(struct whc *whc)
+{
+ u32 whcsparams;
+ int ret, i;
+ resource_size_t start, len;
+
+ spin_lock_init(&whc->lock);
+ mutex_init(&whc->mutex);
+ init_waitqueue_head(&whc->cmd_wq);
+ init_waitqueue_head(&whc->async_list_wq);
+ init_waitqueue_head(&whc->periodic_list_wq);
+ whc->workqueue = create_singlethread_workqueue(dev_name(&whc->umc->dev));
+ if (whc->workqueue == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ INIT_WORK(&whc->dn_work, whc_dn_work);
+
+ INIT_WORK(&whc->async_work, scan_async_work);
+ INIT_LIST_HEAD(&whc->async_list);
+ INIT_LIST_HEAD(&whc->async_removed_list);
+
+ INIT_WORK(&whc->periodic_work, scan_periodic_work);
+ for (i = 0; i < 5; i++)
+ INIT_LIST_HEAD(&whc->periodic_list[i]);
+ INIT_LIST_HEAD(&whc->periodic_removed_list);
+
+ /* Map HC registers. */
+ start = whc->umc->resource.start;
+ len = whc->umc->resource.end - start + 1;
+ if (!request_mem_region(start, len, "whci-hc")) {
+ dev_err(&whc->umc->dev, "can't request HC region\n");
+ ret = -EBUSY;
+ goto error;
+ }
+ whc->base_phys = start;
+ whc->base = ioremap(start, len);
+ if (!whc->base) {
+ dev_err(&whc->umc->dev, "ioremap\n");
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ whc_hw_reset(whc);
+
+ /* Read maximum number of devices, keys and MMC IEs. */
+ whcsparams = le_readl(whc->base + WHCSPARAMS);
+ whc->n_devices = WHCSPARAMS_TO_N_DEVICES(whcsparams);
+ whc->n_keys = WHCSPARAMS_TO_N_KEYS(whcsparams);
+ whc->n_mmc_ies = WHCSPARAMS_TO_N_MMC_IES(whcsparams);
+
+ dev_dbg(&whc->umc->dev, "N_DEVICES = %d, N_KEYS = %d, N_MMC_IES = %d\n",
+ whc->n_devices, whc->n_keys, whc->n_mmc_ies);
+
+ whc->qset_pool = dma_pool_create("qset", &whc->umc->dev,
+ sizeof(struct whc_qset), 64, 0);
+ if (whc->qset_pool == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ ret = asl_init(whc);
+ if (ret < 0)
+ goto error;
+ ret = pzl_init(whc);
+ if (ret < 0)
+ goto error;
+
+ /* Allocate and initialize a buffer for generic commands, the
+ Device Information buffer, and the Device Notification
+ buffer. */
+
+ whc->gen_cmd_buf = dma_alloc_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
+ &whc->gen_cmd_buf_dma, GFP_KERNEL);
+ if (whc->gen_cmd_buf == NULL) {
+ ret = -ENOMEM;
+ goto error;
+ }
+
+ whc->dn_buf = dma_alloc_coherent(&whc->umc->dev,
+ sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
+ &whc->dn_buf_dma, GFP_KERNEL);
+ if (!whc->dn_buf) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ whc_hw_init_dn_buf(whc);
+
+ whc->di_buf = dma_alloc_coherent(&whc->umc->dev,
+ sizeof(struct di_buf_entry) * whc->n_devices,
+ &whc->di_buf_dma, GFP_KERNEL);
+ if (!whc->di_buf) {
+ ret = -ENOMEM;
+ goto error;
+ }
+ whc_hw_init_di_buf(whc);
+
+ return 0;
+
+error:
+ whc_clean_up(whc);
+ return ret;
+}
+
+void whc_clean_up(struct whc *whc)
+{
+ resource_size_t len;
+
+ if (whc->di_buf)
+ dma_free_coherent(&whc->umc->dev, sizeof(struct di_buf_entry) * whc->n_devices,
+ whc->di_buf, whc->di_buf_dma);
+ if (whc->dn_buf)
+ dma_free_coherent(&whc->umc->dev, sizeof(struct dn_buf_entry) * WHC_N_DN_ENTRIES,
+ whc->dn_buf, whc->dn_buf_dma);
+ if (whc->gen_cmd_buf)
+ dma_free_coherent(&whc->umc->dev, WHC_GEN_CMD_DATA_LEN,
+ whc->gen_cmd_buf, whc->gen_cmd_buf_dma);
+
+ pzl_clean_up(whc);
+ asl_clean_up(whc);
+
+ if (whc->qset_pool)
+ dma_pool_destroy(whc->qset_pool);
+
+ len = whc->umc->resource.end - whc->umc->resource.start + 1;
+ if (whc->base)
+ iounmap(whc->base);
+ if (whc->base_phys)
+ release_mem_region(whc->base_phys, len);
+
+ if (whc->workqueue)
+ destroy_workqueue(whc->workqueue);
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) interrupt handling.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+static void transfer_done(struct whc *whc)
+{
+ queue_work(whc->workqueue, &whc->async_work);
+ queue_work(whc->workqueue, &whc->periodic_work);
+}
+
+irqreturn_t whc_int_handler(struct usb_hcd *hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(hcd);
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ u32 sts;
+
+ sts = le_readl(whc->base + WUSBSTS);
+ if (!(sts & WUSBSTS_INT_MASK))
+ return IRQ_NONE;
+ le_writel(sts & WUSBSTS_INT_MASK, whc->base + WUSBSTS);
+
+ if (sts & WUSBSTS_GEN_CMD_DONE)
+ wake_up(&whc->cmd_wq);
+
+ if (sts & WUSBSTS_HOST_ERR)
+ dev_err(&whc->umc->dev, "FIXME: host system error\n");
+
+ if (sts & WUSBSTS_ASYNC_SCHED_SYNCED)
+ wake_up(&whc->async_list_wq);
+
+ if (sts & WUSBSTS_PERIODIC_SCHED_SYNCED)
+ wake_up(&whc->periodic_list_wq);
+
+ if (sts & WUSBSTS_DNTS_INT)
+ queue_work(whc->workqueue, &whc->dn_work);
+
+ /*
+ * A transfer completed (see [WHCI] section 4.7.1.2 for when
+ * this occurs).
+ */
+ if (sts & (WUSBSTS_INT | WUSBSTS_ERR_INT))
+ transfer_done(whc);
+
+ return IRQ_HANDLED;
+}
+
+static int process_dn_buf(struct whc *whc)
+{
+ struct wusbhc *wusbhc = &whc->wusbhc;
+ struct dn_buf_entry *dn;
+ int processed = 0;
+
+ for (dn = whc->dn_buf; dn < whc->dn_buf + WHC_N_DN_ENTRIES; dn++) {
+ if (dn->status & WHC_DN_STATUS_VALID) {
+ wusbhc_handle_dn(wusbhc, dn->src_addr,
+ (struct wusb_dn_hdr *)dn->dn_data,
+ dn->msg_size);
+ dn->status &= ~WHC_DN_STATUS_VALID;
+ processed++;
+ }
+ }
+ return processed;
+}
+
+void whc_dn_work(struct work_struct *work)
+{
+ struct whc *whc = container_of(work, struct whc, dn_work);
+ int processed;
+
+ do {
+ processed = process_dn_buf(whc);
+ } while (processed);
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) periodic schedule management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 4
+static void dump_pzl(struct whc *whc, const char *tag)
+{
+ struct device *dev = &whc->umc->dev;
+ struct whc_qset *qset;
+ int period = 0;
+
+ d_printf(4, dev, "PZL %s\n", tag);
+
+ for (period = 0; period < 5; period++) {
+ d_printf(4, dev, "Period %d\n", period);
+ list_for_each_entry(qset, &whc->periodic_list[period], list_node) {
+ dump_qset(qset, dev);
+ }
+ }
+}
+#else
+static inline void dump_pzl(struct whc *whc, const char *tag)
+{
+}
+#endif
+
+static void update_pzl_pointers(struct whc *whc, int period, u64 addr)
+{
+ switch (period) {
+ case 0:
+ whc_qset_set_link_ptr(&whc->pz_list[0], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[2], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[4], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[6], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[8], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[10], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[12], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[14], addr);
+ break;
+ case 1:
+ whc_qset_set_link_ptr(&whc->pz_list[1], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[5], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[9], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[13], addr);
+ break;
+ case 2:
+ whc_qset_set_link_ptr(&whc->pz_list[3], addr);
+ whc_qset_set_link_ptr(&whc->pz_list[11], addr);
+ break;
+ case 3:
+ whc_qset_set_link_ptr(&whc->pz_list[7], addr);
+ break;
+ case 4:
+ whc_qset_set_link_ptr(&whc->pz_list[15], addr);
+ break;
+ }
+}
+
+/*
+ * Return the 'period' to use for this qset. The minimum interval for
+ * the endpoint is used so whatever urbs are submitted the device is
+ * polled often enough.
+ */
+static int qset_get_period(struct whc *whc, struct whc_qset *qset)
+{
+ uint8_t bInterval = qset->ep->desc.bInterval;
+
+ if (bInterval < 6)
+ bInterval = 6;
+ if (bInterval > 10)
+ bInterval = 10;
+ return bInterval - 6;
+}
+
+static void qset_insert_in_sw_list(struct whc *whc, struct whc_qset *qset)
+{
+ int period;
+
+ period = qset_get_period(whc, qset);
+
+ qset_clear(whc, qset);
+ list_move(&qset->list_node, &whc->periodic_list[period]);
+ qset->in_sw_list = true;
+}
+
+static void pzl_qset_remove(struct whc *whc, struct whc_qset *qset)
+{
+ list_move(&qset->list_node, &whc->periodic_removed_list);
+ qset->in_hw_list = false;
+ qset->in_sw_list = false;
+}
+
+/**
+ * pzl_process_qset - process any recently inactivated or halted qTDs
+ * in a qset.
+ *
+ * After inactive qTDs are removed, new qTDs can be added if the
+ * urb queue still contains URBs.
+ *
+ * Returns the schedule updates required.
+ */
+static enum whc_update pzl_process_qset(struct whc *whc, struct whc_qset *qset)
+{
+ enum whc_update update = 0;
+ uint32_t status = 0;
+
+ while (qset->ntds) {
+ struct whc_qtd *td;
+ int t;
+
+ t = qset->td_start;
+ td = &qset->qtd[qset->td_start];
+ status = le32_to_cpu(td->status);
+
+ /*
+ * Nothing to do with a still active qTD.
+ */
+ if (status & QTD_STS_ACTIVE)
+ break;
+
+ if (status & QTD_STS_HALTED) {
+ /* Ug, an error. */
+ process_halted_qtd(whc, qset, td);
+ goto done;
+ }
+
+ /* Mmm, a completed qTD. */
+ process_inactive_qtd(whc, qset, td);
+ }
+
+ update |= qset_add_qtds(whc, qset);
+
+done:
+ /*
+ * If there are no qTDs in this qset, remove it from the PZL.
+ */
+ if (qset->remove && qset->ntds == 0) {
+ pzl_qset_remove(whc, qset);
+ update |= WHC_UPDATE_REMOVED;
+ }
+
+ return update;
+}
+
+/**
+ * pzl_start - start the periodic schedule
+ * @whc: the WHCI host controller
+ *
+ * The PZL must be valid (e.g., all entries in the list should have
+ * the T bit set).
+ */
+void pzl_start(struct whc *whc)
+{
+ le_writeq(whc->pz_list_dma, whc->base + WUSBPERIODICLISTBASE);
+
+ whc_write_wusbcmd(whc, WUSBCMD_PERIODIC_EN, WUSBCMD_PERIODIC_EN);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+ WUSBSTS_PERIODIC_SCHED, WUSBSTS_PERIODIC_SCHED,
+ 1000, "start PZL");
+}
+
+/**
+ * pzl_stop - stop the periodic schedule
+ * @whc: the WHCI host controller
+ */
+void pzl_stop(struct whc *whc)
+{
+ whc_write_wusbcmd(whc, WUSBCMD_PERIODIC_EN, 0);
+ whci_wait_for(&whc->umc->dev, whc->base + WUSBSTS,
+ WUSBSTS_PERIODIC_SCHED, 0,
+ 1000, "stop PZL");
+}
+
+void pzl_update(struct whc *whc, uint32_t wusbcmd)
+{
+ whc_write_wusbcmd(whc, wusbcmd, wusbcmd);
+ wait_event(whc->periodic_list_wq,
+ (le_readl(whc->base + WUSBCMD) & WUSBCMD_PERIODIC_UPDATED) == 0);
+}
+
+static void update_pzl_hw_view(struct whc *whc)
+{
+ struct whc_qset *qset, *t;
+ int period;
+ u64 tmp_qh = 0;
+
+ for (period = 0; period < 5; period++) {
+ list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
+ whc_qset_set_link_ptr(&qset->qh.link, tmp_qh);
+ tmp_qh = qset->qset_dma;
+ qset->in_hw_list = true;
+ }
+ update_pzl_pointers(whc, period, tmp_qh);
+ }
+}
+
+/**
+ * scan_periodic_work - scan the PZL for qsets to process.
+ *
+ * Process each qset in the PZL in turn and then signal the WHC that
+ * the PZL has been updated.
+ *
+ * Then start, stop or update the periodic schedule as required.
+ */
+void scan_periodic_work(struct work_struct *work)
+{
+ struct whc *whc = container_of(work, struct whc, periodic_work);
+ struct whc_qset *qset, *t;
+ enum whc_update update = 0;
+ int period;
+
+ spin_lock_irq(&whc->lock);
+
+ dump_pzl(whc, "before processing");
+
+ for (period = 4; period >= 0; period--) {
+ list_for_each_entry_safe(qset, t, &whc->periodic_list[period], list_node) {
+ if (!qset->in_hw_list)
+ update |= WHC_UPDATE_ADDED;
+ update |= pzl_process_qset(whc, qset);
+ }
+ }
+
+ if (update & (WHC_UPDATE_ADDED | WHC_UPDATE_REMOVED))
+ update_pzl_hw_view(whc);
+
+ dump_pzl(whc, "after processing");
+
+ spin_unlock_irq(&whc->lock);
+
+ if (update) {
+ uint32_t wusbcmd = WUSBCMD_PERIODIC_UPDATED | WUSBCMD_PERIODIC_SYNCED_DB;
+ if (update & WHC_UPDATE_REMOVED)
+ wusbcmd |= WUSBCMD_PERIODIC_QSET_RM;
+ pzl_update(whc, wusbcmd);
+ }
+
+ /*
+ * Now that the PZL is updated, complete the removal of any
+ * removed qsets.
+ */
+ spin_lock(&whc->lock);
+
+ list_for_each_entry_safe(qset, t, &whc->periodic_removed_list, list_node) {
+ qset_remove_complete(whc, qset);
+ }
+
+ spin_unlock(&whc->lock);
+}
+
+/**
+ * pzl_urb_enqueue - queue an URB onto the periodic list (PZL)
+ * @whc: the WHCI host controller
+ * @urb: the URB to enqueue
+ * @mem_flags: flags for any memory allocations
+ *
+ * The qset for the endpoint is obtained and the urb queued on to it.
+ *
+ * Work is scheduled to update the hardware's view of the PZL.
+ */
+int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags)
+{
+ struct whc_qset *qset;
+ int err;
+ unsigned long flags;
+
+ spin_lock_irqsave(&whc->lock, flags);
+
+ qset = get_qset(whc, urb, GFP_ATOMIC);
+ if (qset == NULL)
+ err = -ENOMEM;
+ else
+ err = qset_add_urb(whc, qset, urb, GFP_ATOMIC);
+ if (!err) {
+ usb_hcd_link_urb_to_ep(&whc->wusbhc.usb_hcd, urb);
+ if (!qset->in_sw_list)
+ qset_insert_in_sw_list(whc, qset);
+ }
+
+ spin_unlock_irqrestore(&whc->lock, flags);
+
+ if (!err)
+ queue_work(whc->workqueue, &whc->periodic_work);
+
+ return 0;
+}
+
+/**
+ * pzl_urb_dequeue - remove an URB (qset) from the periodic list
+ * @whc: the WHCI host controller
+ * @urb: the URB to dequeue
+ * @status: the current status of the URB
+ *
+ * URBs that do yet have qTDs can simply be removed from the software
+ * queue, otherwise the qset must be removed so the qTDs can be safely
+ * removed.
+ */
+int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status)
+{
+ struct whc_urb *wurb = urb->hcpriv;
+ struct whc_qset *qset = wurb->qset;
+ struct whc_std *std, *t;
+ int ret;
+ unsigned long flags;
+
+ spin_lock_irqsave(&whc->lock, flags);
+
+ ret = usb_hcd_check_unlink_urb(&whc->wusbhc.usb_hcd, urb, status);
+ if (ret < 0)
+ goto out;
+
+ list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+ if (std->urb == urb)
+ qset_free_std(whc, std);
+ else
+ std->qtd = NULL; /* so this std is re-added when the qset is */
+ }
+
+ pzl_qset_remove(whc, qset);
+ wurb->status = status;
+ wurb->is_async = false;
+ queue_work(whc->workqueue, &wurb->dequeue_work);
+
+out:
+ spin_unlock_irqrestore(&whc->lock, flags);
+
+ return ret;
+}
+
+/**
+ * pzl_qset_delete - delete a qset from the PZL
+ */
+void pzl_qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+ qset->remove = 1;
+ queue_work(whc->workqueue, &whc->periodic_work);
+ qset_delete(whc, qset);
+}
+
+
+/**
+ * pzl_init - initialize the periodic zone list
+ * @whc: the WHCI host controller
+ */
+int pzl_init(struct whc *whc)
+{
+ int i;
+
+ whc->pz_list = dma_alloc_coherent(&whc->umc->dev, sizeof(u64) * 16,
+ &whc->pz_list_dma, GFP_KERNEL);
+ if (whc->pz_list == NULL)
+ return -ENOMEM;
+
+ /* Set T bit on all elements in PZL. */
+ for (i = 0; i < 16; i++)
+ whc->pz_list[i] = cpu_to_le64(QH_LINK_NTDS(8) | QH_LINK_T);
+
+ le_writeq(whc->pz_list_dma, whc->base + WUSBPERIODICLISTBASE);
+
+ return 0;
+}
+
+/**
+ * pzl_clean_up - free PZL resources
+ * @whc: the WHCI host controller
+ *
+ * The PZL is stopped and empty.
+ */
+void pzl_clean_up(struct whc *whc)
+{
+ if (whc->pz_list)
+ dma_free_coherent(&whc->umc->dev, sizeof(u64) * 16, whc->pz_list,
+ whc->pz_list_dma);
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) qset management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/umc.h>
+#include <linux/usb.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+void dump_qset(struct whc_qset *qset, struct device *dev)
+{
+ struct whc_std *std;
+ struct urb *urb = NULL;
+ int i;
+
+ dev_dbg(dev, "qset %08x\n", (u32)qset->qset_dma);
+ dev_dbg(dev, " -> %08x\n", (u32)qset->qh.link);
+ dev_dbg(dev, " info: %08x %08x %08x\n",
+ qset->qh.info1, qset->qh.info2, qset->qh.info3);
+ dev_dbg(dev, " sts: %04x errs: %d\n", qset->qh.status, qset->qh.err_count);
+ dev_dbg(dev, " TD: sts: %08x opts: %08x\n",
+ qset->qh.overlay.qtd.status, qset->qh.overlay.qtd.options);
+
+ for (i = 0; i < WHCI_QSET_TD_MAX; i++) {
+ dev_dbg(dev, " %c%c TD[%d]: sts: %08x opts: %08x ptr: %08x\n",
+ i == qset->td_start ? 'S' : ' ',
+ i == qset->td_end ? 'E' : ' ',
+ i, qset->qtd[i].status, qset->qtd[i].options,
+ (u32)qset->qtd[i].page_list_ptr);
+ }
+ dev_dbg(dev, " ntds: %d\n", qset->ntds);
+ list_for_each_entry(std, &qset->stds, list_node) {
+ if (urb != std->urb) {
+ urb = std->urb;
+ dev_dbg(dev, " urb %p transferred: %d bytes\n", urb,
+ urb->actual_length);
+ }
+ if (std->qtd)
+ dev_dbg(dev, " sTD[%td]: %zu bytes @ %08x\n",
+ std->qtd - &qset->qtd[0],
+ std->len, std->num_pointers ?
+ (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+ else
+ dev_dbg(dev, " sTD[-]: %zd bytes @ %08x\n",
+ std->len, std->num_pointers ?
+ (u32)(std->pl_virt[0].buf_ptr) : (u32)std->dma_addr);
+ }
+}
+
+struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags)
+{
+ struct whc_qset *qset;
+ dma_addr_t dma;
+
+ qset = dma_pool_alloc(whc->qset_pool, mem_flags, &dma);
+ if (qset == NULL)
+ return NULL;
+ memset(qset, 0, sizeof(struct whc_qset));
+
+ qset->qset_dma = dma;
+ qset->whc = whc;
+
+ INIT_LIST_HEAD(&qset->list_node);
+ INIT_LIST_HEAD(&qset->stds);
+
+ return qset;
+}
+
+/**
+ * qset_fill_qh - fill the static endpoint state in a qset's QHead
+ * @qset: the qset whose QH needs initializing with static endpoint
+ * state
+ * @urb: an urb for a transfer to this endpoint
+ */
+static void qset_fill_qh(struct whc_qset *qset, struct urb *urb)
+{
+ struct usb_device *usb_dev = urb->dev;
+ struct usb_wireless_ep_comp_descriptor *epcd;
+ bool is_out;
+
+ is_out = usb_pipeout(urb->pipe);
+
+ epcd = (struct usb_wireless_ep_comp_descriptor *)qset->ep->extra;
+
+ if (epcd) {
+ qset->max_seq = epcd->bMaxSequence;
+ qset->max_burst = epcd->bMaxBurst;
+ } else {
+ qset->max_seq = 2;
+ qset->max_burst = 1;
+ }
+
+ qset->qh.info1 = cpu_to_le32(
+ QH_INFO1_EP(usb_pipeendpoint(urb->pipe))
+ | (is_out ? QH_INFO1_DIR_OUT : QH_INFO1_DIR_IN)
+ | usb_pipe_to_qh_type(urb->pipe)
+ | QH_INFO1_DEV_INFO_IDX(wusb_port_no_to_idx(usb_dev->portnum))
+ | QH_INFO1_MAX_PKT_LEN(usb_maxpacket(urb->dev, urb->pipe, is_out))
+ );
+ qset->qh.info2 = cpu_to_le32(
+ QH_INFO2_BURST(qset->max_burst)
+ | QH_INFO2_DBP(0)
+ | QH_INFO2_MAX_COUNT(3)
+ | QH_INFO2_MAX_RETRY(3)
+ | QH_INFO2_MAX_SEQ(qset->max_seq - 1)
+ );
+ /* FIXME: where can we obtain these Tx parameters from? Why
+ * doesn't the chip know what Tx power to use? It knows the Rx
+ * strength and can presumably guess the Tx power required
+ * from that? */
+ qset->qh.info3 = cpu_to_le32(
+ QH_INFO3_TX_RATE_53_3
+ | QH_INFO3_TX_PWR(0) /* 0 == max power */
+ );
+}
+
+/**
+ * qset_clear - clear fields in a qset so it may be reinserted into a
+ * schedule
+ */
+void qset_clear(struct whc *whc, struct whc_qset *qset)
+{
+ qset->td_start = qset->td_end = qset->ntds = 0;
+ qset->remove = 0;
+
+ qset->qh.link = cpu_to_le32(QH_LINK_NTDS(8) | QH_LINK_T);
+ qset->qh.status = cpu_to_le16(QH_STATUS_ICUR(qset->td_start));
+ qset->qh.err_count = 0;
+ qset->qh.cur_window = cpu_to_le32((1 << qset->max_burst) - 1);
+ qset->qh.scratch[0] = 0;
+ qset->qh.scratch[1] = 0;
+ qset->qh.scratch[2] = 0;
+
+ memset(&qset->qh.overlay, 0, sizeof(qset->qh.overlay));
+
+ init_completion(&qset->remove_complete);
+}
+
+/**
+ * get_qset - get the qset for an async endpoint
+ *
+ * A new qset is created if one does not already exist.
+ */
+struct whc_qset *get_qset(struct whc *whc, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct whc_qset *qset;
+
+ qset = urb->ep->hcpriv;
+ if (qset == NULL) {
+ qset = qset_alloc(whc, mem_flags);
+ if (qset == NULL)
+ return NULL;
+
+ qset->ep = urb->ep;
+ urb->ep->hcpriv = qset;
+ qset_fill_qh(qset, urb);
+ }
+ return qset;
+}
+
+void qset_remove_complete(struct whc *whc, struct whc_qset *qset)
+{
+ list_del_init(&qset->list_node);
+ complete(&qset->remove_complete);
+}
+
+/**
+ * qset_add_qtds - add qTDs for an URB to a qset
+ *
+ * Returns true if the list (ASL/PZL) must be updated because (for a
+ * WHCI 0.95 controller) an activated qTD was pointed to be iCur.
+ */
+enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset)
+{
+ struct whc_std *std;
+ enum whc_update update = 0;
+
+ list_for_each_entry(std, &qset->stds, list_node) {
+ struct whc_qtd *qtd;
+ uint32_t status;
+
+ if (qset->ntds >= WHCI_QSET_TD_MAX
+ || (qset->pause_after_urb && std->urb != qset->pause_after_urb))
+ break;
+
+ if (std->qtd)
+ continue; /* already has a qTD */
+
+ qtd = std->qtd = &qset->qtd[qset->td_end];
+
+ /* Fill in setup bytes for control transfers. */
+ if (usb_pipecontrol(std->urb->pipe))
+ memcpy(qtd->setup, std->urb->setup_packet, 8);
+
+ status = QTD_STS_ACTIVE | QTD_STS_LEN(std->len);
+
+ if (whc_std_last(std) && usb_pipeout(std->urb->pipe))
+ status |= QTD_STS_LAST_PKT;
+
+ /*
+ * For an IN transfer the iAlt field should be set so
+ * the h/w will automatically advance to the next
+ * transfer. However, if there are 8 or more TDs
+ * remaining in this transfer then iAlt cannot be set
+ * as it could point to somewhere in this transfer.
+ */
+ if (std->ntds_remaining < WHCI_QSET_TD_MAX) {
+ int ialt;
+ ialt = (qset->td_end + std->ntds_remaining) % WHCI_QSET_TD_MAX;
+ status |= QTD_STS_IALT(ialt);
+ } else if (usb_pipein(std->urb->pipe))
+ qset->pause_after_urb = std->urb;
+
+ if (std->num_pointers)
+ qtd->options = cpu_to_le32(QTD_OPT_IOC);
+ else
+ qtd->options = cpu_to_le32(QTD_OPT_IOC | QTD_OPT_SMALL);
+ qtd->page_list_ptr = cpu_to_le64(std->dma_addr);
+
+ qtd->status = cpu_to_le32(status);
+
+ if (QH_STATUS_TO_ICUR(qset->qh.status) == qset->td_end)
+ update = WHC_UPDATE_UPDATED;
+
+ if (++qset->td_end >= WHCI_QSET_TD_MAX)
+ qset->td_end = 0;
+ qset->ntds++;
+ }
+
+ return update;
+}
+
+/**
+ * qset_remove_qtd - remove the first qTD from a qset.
+ *
+ * The qTD might be still active (if it's part of a IN URB that
+ * resulted in a short read) so ensure it's deactivated.
+ */
+static void qset_remove_qtd(struct whc *whc, struct whc_qset *qset)
+{
+ qset->qtd[qset->td_start].status = 0;
+
+ if (++qset->td_start >= WHCI_QSET_TD_MAX)
+ qset->td_start = 0;
+ qset->ntds--;
+}
+
+/**
+ * qset_free_std - remove an sTD and free it.
+ * @whc: the WHCI host controller
+ * @std: the sTD to remove and free.
+ */
+void qset_free_std(struct whc *whc, struct whc_std *std)
+{
+ list_del(&std->list_node);
+ if (std->num_pointers) {
+ dma_unmap_single(whc->wusbhc.dev, std->dma_addr,
+ std->num_pointers * sizeof(struct whc_page_list_entry),
+ DMA_TO_DEVICE);
+ kfree(std->pl_virt);
+ }
+
+ kfree(std);
+}
+
+/**
+ * qset_remove_qtds - remove an URB's qTDs (and sTDs).
+ */
+static void qset_remove_qtds(struct whc *whc, struct whc_qset *qset,
+ struct urb *urb)
+{
+ struct whc_std *std, *t;
+
+ list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+ if (std->urb != urb)
+ break;
+ if (std->qtd != NULL)
+ qset_remove_qtd(whc, qset);
+ qset_free_std(whc, std);
+ }
+}
+
+/**
+ * qset_free_stds - free any remaining sTDs for an URB.
+ */
+static void qset_free_stds(struct whc_qset *qset, struct urb *urb)
+{
+ struct whc_std *std, *t;
+
+ list_for_each_entry_safe(std, t, &qset->stds, list_node) {
+ if (std->urb == urb)
+ qset_free_std(qset->whc, std);
+ }
+}
+
+static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_flags)
+{
+ dma_addr_t dma_addr = std->dma_addr;
+ dma_addr_t sp, ep;
+ size_t std_len = std->len;
+ size_t pl_len;
+ int p;
+
+ sp = ALIGN(dma_addr, WHCI_PAGE_SIZE);
+ ep = dma_addr + std_len;
+ std->num_pointers = DIV_ROUND_UP(ep - sp, WHCI_PAGE_SIZE);
+
+ pl_len = std->num_pointers * sizeof(struct whc_page_list_entry);
+ std->pl_virt = kmalloc(pl_len, mem_flags);
+ if (std->pl_virt == NULL)
+ return -ENOMEM;
+ std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
+
+ for (p = 0; p < std->num_pointers; p++) {
+ std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);
+ dma_addr = ALIGN(dma_addr + WHCI_PAGE_SIZE, WHCI_PAGE_SIZE);
+ }
+
+ return 0;
+}
+
+/**
+ * urb_dequeue_work - executes asl/pzl update and gives back the urb to the system.
+ */
+static void urb_dequeue_work(struct work_struct *work)
+{
+ struct whc_urb *wurb = container_of(work, struct whc_urb, dequeue_work);
+ struct whc_qset *qset = wurb->qset;
+ struct whc *whc = qset->whc;
+ unsigned long flags;
+
+ if (wurb->is_async == true)
+ asl_update(whc, WUSBCMD_ASYNC_UPDATED
+ | WUSBCMD_ASYNC_SYNCED_DB
+ | WUSBCMD_ASYNC_QSET_RM);
+ else
+ pzl_update(whc, WUSBCMD_PERIODIC_UPDATED
+ | WUSBCMD_PERIODIC_SYNCED_DB
+ | WUSBCMD_PERIODIC_QSET_RM);
+
+ spin_lock_irqsave(&whc->lock, flags);
+ qset_remove_urb(whc, qset, wurb->urb, wurb->status);
+ spin_unlock_irqrestore(&whc->lock, flags);
+}
+
+/**
+ * qset_add_urb - add an urb to the qset's queue.
+ *
+ * The URB is chopped into sTDs, one for each qTD that will required.
+ * At least one qTD (and sTD) is required even if the transfer has no
+ * data (e.g., for some control transfers).
+ */
+int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
+ gfp_t mem_flags)
+{
+ struct whc_urb *wurb;
+ int remaining = urb->transfer_buffer_length;
+ u64 transfer_dma = urb->transfer_dma;
+ int ntds_remaining;
+
+ ntds_remaining = DIV_ROUND_UP(remaining, QTD_MAX_XFER_SIZE);
+ if (ntds_remaining == 0)
+ ntds_remaining = 1;
+
+ wurb = kzalloc(sizeof(struct whc_urb), mem_flags);
+ if (wurb == NULL)
+ goto err_no_mem;
+ urb->hcpriv = wurb;
+ wurb->qset = qset;
+ wurb->urb = urb;
+ INIT_WORK(&wurb->dequeue_work, urb_dequeue_work);
+
+ while (ntds_remaining) {
+ struct whc_std *std;
+ size_t std_len;
+
+ std = kmalloc(sizeof(struct whc_std), mem_flags);
+ if (std == NULL)
+ goto err_no_mem;
+
+ std_len = remaining;
+ if (std_len > QTD_MAX_XFER_SIZE)
+ std_len = QTD_MAX_XFER_SIZE;
+
+ std->urb = urb;
+ std->dma_addr = transfer_dma;
+ std->len = std_len;
+ std->ntds_remaining = ntds_remaining;
+ std->qtd = NULL;
+
+ INIT_LIST_HEAD(&std->list_node);
+ list_add_tail(&std->list_node, &qset->stds);
+
+ if (std_len > WHCI_PAGE_SIZE) {
+ if (qset_fill_page_list(whc, std, mem_flags) < 0)
+ goto err_no_mem;
+ } else
+ std->num_pointers = 0;
+
+ ntds_remaining--;
+ remaining -= std_len;
+ transfer_dma += std_len;
+ }
+
+ return 0;
+
+err_no_mem:
+ qset_free_stds(qset, urb);
+ return -ENOMEM;
+}
+
+/**
+ * qset_remove_urb - remove an URB from the urb queue.
+ *
+ * The URB is returned to the USB subsystem.
+ */
+void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
+ struct urb *urb, int status)
+{
+ struct wusbhc *wusbhc = &whc->wusbhc;
+ struct whc_urb *wurb = urb->hcpriv;
+
+ usb_hcd_unlink_urb_from_ep(&wusbhc->usb_hcd, urb);
+ /* Drop the lock as urb->complete() may enqueue another urb. */
+ spin_unlock(&whc->lock);
+ wusbhc_giveback_urb(wusbhc, urb, status);
+ spin_lock(&whc->lock);
+
+ kfree(wurb);
+}
+
+/**
+ * get_urb_status_from_qtd - get the completed urb status from qTD status
+ * @urb: completed urb
+ * @status: qTD status
+ */
+static int get_urb_status_from_qtd(struct urb *urb, u32 status)
+{
+ if (status & QTD_STS_HALTED) {
+ if (status & QTD_STS_DBE)
+ return usb_pipein(urb->pipe) ? -ENOSR : -ECOMM;
+ else if (status & QTD_STS_BABBLE)
+ return -EOVERFLOW;
+ else if (status & QTD_STS_RCE)
+ return -ETIME;
+ return -EPIPE;
+ }
+ if (usb_pipein(urb->pipe)
+ && (urb->transfer_flags & URB_SHORT_NOT_OK)
+ && urb->actual_length < urb->transfer_buffer_length)
+ return -EREMOTEIO;
+ return 0;
+}
+
+/**
+ * process_inactive_qtd - process an inactive (but not halted) qTD.
+ *
+ * Update the urb with the transfer bytes from the qTD, if the urb is
+ * completely transfered or (in the case of an IN only) the LPF is
+ * set, then the transfer is complete and the urb should be returned
+ * to the system.
+ */
+void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
+ struct whc_qtd *qtd)
+{
+ struct whc_std *std = list_first_entry(&qset->stds, struct whc_std, list_node);
+ struct urb *urb = std->urb;
+ uint32_t status;
+ bool complete;
+
+ status = le32_to_cpu(qtd->status);
+
+ urb->actual_length += std->len - QTD_STS_TO_LEN(status);
+
+ if (usb_pipein(urb->pipe) && (status & QTD_STS_LAST_PKT))
+ complete = true;
+ else
+ complete = whc_std_last(std);
+
+ qset_remove_qtd(whc, qset);
+ qset_free_std(whc, std);
+
+ /*
+ * Transfers for this URB are complete? Then return it to the
+ * USB subsystem.
+ */
+ if (complete) {
+ qset_remove_qtds(whc, qset, urb);
+ qset_remove_urb(whc, qset, urb, get_urb_status_from_qtd(urb, status));
+
+ /*
+ * If iAlt isn't valid then the hardware didn't
+ * advance iCur. Adjust the start and end pointers to
+ * match iCur.
+ */
+ if (!(status & QTD_STS_IALT_VALID))
+ qset->td_start = qset->td_end
+ = QH_STATUS_TO_ICUR(le16_to_cpu(qset->qh.status));
+ qset->pause_after_urb = NULL;
+ }
+}
+
+/**
+ * process_halted_qtd - process a qset with a halted qtd
+ *
+ * Remove all the qTDs for the failed URB and return the failed URB to
+ * the USB subsystem. Then remove all other qTDs so the qset can be
+ * removed.
+ *
+ * FIXME: this is the point where rate adaptation can be done. If a
+ * transfer failed because it exceeded the maximum number of retries
+ * then it could be reactivated with a slower rate without having to
+ * remove the qset.
+ */
+void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
+ struct whc_qtd *qtd)
+{
+ struct whc_std *std = list_first_entry(&qset->stds, struct whc_std, list_node);
+ struct urb *urb = std->urb;
+ int urb_status;
+
+ urb_status = get_urb_status_from_qtd(urb, le32_to_cpu(qtd->status));
+
+ qset_remove_qtds(whc, qset, urb);
+ qset_remove_urb(whc, qset, urb, urb_status);
+
+ list_for_each_entry(std, &qset->stds, list_node) {
+ if (qset->ntds == 0)
+ break;
+ qset_remove_qtd(whc, qset);
+ std->qtd = NULL;
+ }
+
+ qset->remove = 1;
+}
+
+void qset_free(struct whc *whc, struct whc_qset *qset)
+{
+ dma_pool_free(whc->qset_pool, qset, qset->qset_dma);
+}
+
+/**
+ * qset_delete - wait for a qset to be unused, then free it.
+ */
+void qset_delete(struct whc *whc, struct whc_qset *qset)
+{
+ wait_for_completion(&qset->remove_complete);
+ qset_free(whc, qset);
+}
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) private header.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#ifndef __WHCD_H
+#define __WHCD_H
+
+#include <linux/uwb/whci.h>
+#include <linux/workqueue.h>
+
+#include "whci-hc.h"
+
+/* Generic command timeout. */
+#define WHC_GENCMD_TIMEOUT_MS 100
+
+
+struct whc {
+ struct wusbhc wusbhc;
+ struct umc_dev *umc;
+
+ resource_size_t base_phys;
+ void __iomem *base;
+ int irq;
+
+ u8 n_devices;
+ u8 n_keys;
+ u8 n_mmc_ies;
+
+ u64 *pz_list;
+ struct dn_buf_entry *dn_buf;
+ struct di_buf_entry *di_buf;
+ dma_addr_t pz_list_dma;
+ dma_addr_t dn_buf_dma;
+ dma_addr_t di_buf_dma;
+
+ spinlock_t lock;
+ struct mutex mutex;
+
+ void * gen_cmd_buf;
+ dma_addr_t gen_cmd_buf_dma;
+ wait_queue_head_t cmd_wq;
+
+ struct workqueue_struct *workqueue;
+ struct work_struct dn_work;
+
+ struct dma_pool *qset_pool;
+
+ struct list_head async_list;
+ struct list_head async_removed_list;
+ wait_queue_head_t async_list_wq;
+ struct work_struct async_work;
+
+ struct list_head periodic_list[5];
+ struct list_head periodic_removed_list;
+ wait_queue_head_t periodic_list_wq;
+ struct work_struct periodic_work;
+};
+
+#define wusbhc_to_whc(w) (container_of((w), struct whc, wusbhc))
+
+/**
+ * struct whc_std - a software TD.
+ * @urb: the URB this sTD is for.
+ * @offset: start of the URB's data for this TD.
+ * @len: the length of data in the associated TD.
+ * @ntds_remaining: number of TDs (starting from this one) in this transfer.
+ *
+ * Queued URBs may require more TDs than are available in a qset so we
+ * use a list of these "software TDs" (sTDs) to hold per-TD data.
+ */
+struct whc_std {
+ struct urb *urb;
+ size_t len;
+ int ntds_remaining;
+ struct whc_qtd *qtd;
+
+ struct list_head list_node;
+ int num_pointers;
+ dma_addr_t dma_addr;
+ struct whc_page_list_entry *pl_virt;
+};
+
+/**
+ * struct whc_urb - per URB host controller structure.
+ * @urb: the URB this struct is for.
+ * @qset: the qset associated to the URB.
+ * @dequeue_work: the work to remove the URB when dequeued.
+ * @is_async: the URB belongs to async sheduler or not.
+ * @status: the status to be returned when calling wusbhc_giveback_urb.
+ */
+struct whc_urb {
+ struct urb *urb;
+ struct whc_qset *qset;
+ struct work_struct dequeue_work;
+ bool is_async;
+ int status;
+};
+
+/**
+ * whc_std_last - is this sTD the URB's last?
+ * @std: the sTD to check.
+ */
+static inline bool whc_std_last(struct whc_std *std)
+{
+ return std->ntds_remaining <= 1;
+}
+
+enum whc_update {
+ WHC_UPDATE_ADDED = 0x01,
+ WHC_UPDATE_REMOVED = 0x02,
+ WHC_UPDATE_UPDATED = 0x04,
+};
+
+/* init.c */
+int whc_init(struct whc *whc);
+void whc_clean_up(struct whc *whc);
+
+/* hw.c */
+void whc_write_wusbcmd(struct whc *whc, u32 mask, u32 val);
+int whc_do_gencmd(struct whc *whc, u32 cmd, u32 params, void *addr, size_t len);
+
+/* wusb.c */
+int whc_wusbhc_start(struct wusbhc *wusbhc);
+void whc_wusbhc_stop(struct wusbhc *wusbhc);
+int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+ u8 handle, struct wuie_hdr *wuie);
+int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle);
+int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm);
+int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev);
+int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots);
+int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+ const void *ptk, size_t key_size);
+int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+ const void *gtk, size_t key_size);
+int whc_set_cluster_id(struct whc *whc, u8 bcid);
+
+/* int.c */
+irqreturn_t whc_int_handler(struct usb_hcd *hcd);
+void whc_dn_work(struct work_struct *work);
+
+/* asl.c */
+void asl_start(struct whc *whc);
+void asl_stop(struct whc *whc);
+int asl_init(struct whc *whc);
+void asl_clean_up(struct whc *whc);
+int asl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+int asl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
+void asl_qset_delete(struct whc *whc, struct whc_qset *qset);
+void scan_async_work(struct work_struct *work);
+
+/* pzl.c */
+int pzl_init(struct whc *whc);
+void pzl_clean_up(struct whc *whc);
+void pzl_start(struct whc *whc);
+void pzl_stop(struct whc *whc);
+int pzl_urb_enqueue(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+int pzl_urb_dequeue(struct whc *whc, struct urb *urb, int status);
+void pzl_qset_delete(struct whc *whc, struct whc_qset *qset);
+void scan_periodic_work(struct work_struct *work);
+
+/* qset.c */
+struct whc_qset *qset_alloc(struct whc *whc, gfp_t mem_flags);
+void qset_free(struct whc *whc, struct whc_qset *qset);
+struct whc_qset *get_qset(struct whc *whc, struct urb *urb, gfp_t mem_flags);
+void qset_delete(struct whc *whc, struct whc_qset *qset);
+void qset_clear(struct whc *whc, struct whc_qset *qset);
+int qset_add_urb(struct whc *whc, struct whc_qset *qset, struct urb *urb,
+ gfp_t mem_flags);
+void qset_free_std(struct whc *whc, struct whc_std *std);
+void qset_remove_urb(struct whc *whc, struct whc_qset *qset,
+ struct urb *urb, int status);
+void process_halted_qtd(struct whc *whc, struct whc_qset *qset,
+ struct whc_qtd *qtd);
+void process_inactive_qtd(struct whc *whc, struct whc_qset *qset,
+ struct whc_qtd *qtd);
+enum whc_update qset_add_qtds(struct whc *whc, struct whc_qset *qset);
+void qset_remove_complete(struct whc *whc, struct whc_qset *qset);
+void dump_qset(struct whc_qset *qset, struct device *dev);
+void pzl_update(struct whc *whc, uint32_t wusbcmd);
+void asl_update(struct whc *whc, uint32_t wusbcmd);
+
+#endif /* #ifndef __WHCD_H */
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) data structures.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+#ifndef _WHCI_WHCI_HC_H
+#define _WHCI_WHCI_HC_H
+
+#include <linux/list.h>
+
+/**
+ * WHCI_PAGE_SIZE - page size use by WHCI
+ *
+ * WHCI assumes that host system uses pages of 4096 octets.
+ */
+#define WHCI_PAGE_SIZE 4096
+
+
+/**
+ * QTD_MAX_TXFER_SIZE - max number of bytes to transfer with a single
+ * qtd.
+ *
+ * This is 2^20 - 1.
+ */
+#define QTD_MAX_XFER_SIZE 1048575
+
+
+/**
+ * struct whc_qtd - Queue Element Transfer Descriptors (qTD)
+ *
+ * This describes the data for a bulk, control or interrupt transfer.
+ *
+ * [WHCI] section 3.2.4
+ */
+struct whc_qtd {
+ __le32 status; /*< remaining transfer len and transfer status */
+ __le32 options;
+ __le64 page_list_ptr; /*< physical pointer to data buffer page list*/
+ __u8 setup[8]; /*< setup data for control transfers */
+} __attribute__((packed));
+
+#define QTD_STS_ACTIVE (1 << 31) /* enable execution of transaction */
+#define QTD_STS_HALTED (1 << 30) /* transfer halted */
+#define QTD_STS_DBE (1 << 29) /* data buffer error */
+#define QTD_STS_BABBLE (1 << 28) /* babble detected */
+#define QTD_STS_RCE (1 << 27) /* retry count exceeded */
+#define QTD_STS_LAST_PKT (1 << 26) /* set Last Packet Flag in WUSB header */
+#define QTD_STS_INACTIVE (1 << 25) /* queue set is marked inactive */
+#define QTD_STS_IALT_VALID (1 << 23) /* iAlt field is valid */
+#define QTD_STS_IALT(i) (QTD_STS_IALT_VALID | ((i) << 20)) /* iAlt field */
+#define QTD_STS_LEN(l) ((l) << 0) /* transfer length */
+#define QTD_STS_TO_LEN(s) ((s) & 0x000fffff)
+
+#define QTD_OPT_IOC (1 << 1) /* page_list_ptr points to buffer directly */
+#define QTD_OPT_SMALL (1 << 0) /* interrupt on complete */
+
+/**
+ * struct whc_itd - Isochronous Queue Element Transfer Descriptors (iTD)
+ *
+ * This describes the data and other parameters for an isochronous
+ * transfer.
+ *
+ * [WHCI] section 3.2.5
+ */
+struct whc_itd {
+ __le16 presentation_time; /*< presentation time for OUT transfers */
+ __u8 num_segments; /*< number of data segments in segment list */
+ __u8 status; /*< command execution status */
+ __le32 options; /*< misc transfer options */
+ __le64 page_list_ptr; /*< physical pointer to data buffer page list */
+ __le64 seg_list_ptr; /*< physical pointer to segment list */
+} __attribute__((packed));
+
+#define ITD_STS_ACTIVE (1 << 7) /* enable execution of transaction */
+#define ITD_STS_DBE (1 << 5) /* data buffer error */
+#define ITD_STS_BABBLE (1 << 4) /* babble detected */
+#define ITD_STS_INACTIVE (1 << 1) /* queue set is marked inactive */
+
+#define ITD_OPT_IOC (1 << 1) /* interrupt on complete */
+#define ITD_OPT_SMALL (1 << 0) /* page_list_ptr points to buffer directly */
+
+/**
+ * Page list entry.
+ *
+ * A TD's page list must contain sufficient page list entries for the
+ * total data length in the TD.
+ *
+ * [WHCI] section 3.2.4.3
+ */
+struct whc_page_list_entry {
+ __le64 buf_ptr; /*< physical pointer to buffer */
+} __attribute__((packed));
+
+/**
+ * struct whc_seg_list_entry - Segment list entry.
+ *
+ * Describes a portion of the data buffer described in the containing
+ * qTD's page list.
+ *
+ * seg_ptr = qtd->page_list_ptr[qtd->seg_list_ptr[seg].idx].buf_ptr
+ * + qtd->seg_list_ptr[seg].offset;
+ *
+ * Segments can't cross page boundries.
+ *
+ * [WHCI] section 3.2.5.5
+ */
+struct whc_seg_list_entry {
+ __le16 len; /*< segment length */
+ __u8 idx; /*< index into page list */
+ __u8 status; /*< segment status */
+ __le16 offset; /*< 12 bit offset into page */
+} __attribute__((packed));
+
+/**
+ * struct whc_qhead - endpoint and status information for a qset.
+ *
+ * [WHCI] section 3.2.6
+ */
+struct whc_qhead {
+ __le64 link; /*< next qset in list */
+ __le32 info1;
+ __le32 info2;
+ __le32 info3;
+ __le16 status;
+ __le16 err_count; /*< transaction error count */
+ __le32 cur_window;
+ __le32 scratch[3]; /*< h/w scratch area */
+ union {
+ struct whc_qtd qtd;
+ struct whc_itd itd;
+ } overlay;
+} __attribute__((packed));
+
+#define QH_LINK_PTR_MASK (~0x03Full)
+#define QH_LINK_PTR(ptr) ((ptr) & QH_LINK_PTR_MASK)
+#define QH_LINK_IQS (1 << 4) /* isochronous queue set */
+#define QH_LINK_NTDS(n) (((n) - 1) << 1) /* number of TDs in queue set */
+#define QH_LINK_T (1 << 0) /* last queue set in periodic schedule list */
+
+#define QH_INFO1_EP(e) ((e) << 0) /* endpoint number */
+#define QH_INFO1_DIR_IN (1 << 4) /* IN transfer */
+#define QH_INFO1_DIR_OUT (0 << 4) /* OUT transfer */
+#define QH_INFO1_TR_TYPE_CTRL (0x0 << 5) /* control transfer */
+#define QH_INFO1_TR_TYPE_ISOC (0x1 << 5) /* isochronous transfer */
+#define QH_INFO1_TR_TYPE_BULK (0x2 << 5) /* bulk transfer */
+#define QH_INFO1_TR_TYPE_INT (0x3 << 5) /* interrupt */
+#define QH_INFO1_TR_TYPE_LP_INT (0x7 << 5) /* low power interrupt */
+#define QH_INFO1_DEV_INFO_IDX(i) ((i) << 8) /* index into device info buffer */
+#define QH_INFO1_SET_INACTIVE (1 << 15) /* set inactive after transfer */
+#define QH_INFO1_MAX_PKT_LEN(l) ((l) << 16) /* maximum packet length */
+
+#define QH_INFO2_BURST(b) ((b) << 0) /* maximum burst length */
+#define QH_INFO2_DBP(p) ((p) << 5) /* data burst policy (see [WUSB] table 5-7) */
+#define QH_INFO2_MAX_COUNT(c) ((c) << 8) /* max isoc/int pkts per zone */
+#define QH_INFO2_RQS (1 << 15) /* reactivate queue set */
+#define QH_INFO2_MAX_RETRY(r) ((r) << 16) /* maximum transaction retries */
+#define QH_INFO2_MAX_SEQ(s) ((s) << 20) /* maximum sequence number */
+#define QH_INFO3_MAX_DELAY(d) ((d) << 0) /* maximum stream delay in 125 us units (isoc only) */
+#define QH_INFO3_INTERVAL(i) ((i) << 16) /* segment interval in 125 us units (isoc only) */
+
+#define QH_INFO3_TX_RATE_53_3 (0 << 24)
+#define QH_INFO3_TX_RATE_80 (1 << 24)
+#define QH_INFO3_TX_RATE_106_7 (2 << 24)
+#define QH_INFO3_TX_RATE_160 (3 << 24)
+#define QH_INFO3_TX_RATE_200 (4 << 24)
+#define QH_INFO3_TX_RATE_320 (5 << 24)
+#define QH_INFO3_TX_RATE_400 (6 << 24)
+#define QH_INFO3_TX_RATE_480 (7 << 24)
+#define QH_INFO3_TX_PWR(p) ((p) << 29) /* transmit power (see [WUSB] section 5.2.1.2) */
+
+#define QH_STATUS_FLOW_CTRL (1 << 15)
+#define QH_STATUS_ICUR(i) ((i) << 5)
+#define QH_STATUS_TO_ICUR(s) (((s) >> 5) & 0x7)
+
+/**
+ * usb_pipe_to_qh_type - USB core pipe type to QH transfer type
+ *
+ * Returns the QH type field for a USB core pipe type.
+ */
+static inline unsigned usb_pipe_to_qh_type(unsigned pipe)
+{
+ static const unsigned type[] = {
+ [PIPE_ISOCHRONOUS] = QH_INFO1_TR_TYPE_ISOC,
+ [PIPE_INTERRUPT] = QH_INFO1_TR_TYPE_INT,
+ [PIPE_CONTROL] = QH_INFO1_TR_TYPE_CTRL,
+ [PIPE_BULK] = QH_INFO1_TR_TYPE_BULK,
+ };
+ return type[usb_pipetype(pipe)];
+}
+
+/**
+ * Maxiumum number of TDs in a qset.
+ */
+#define WHCI_QSET_TD_MAX 8
+
+/**
+ * struct whc_qset - WUSB data transfers to a specific endpoint
+ * @qh: the QHead of this qset
+ * @qtd: up to 8 qTDs (for qsets for control, bulk and interrupt
+ * transfers)
+ * @itd: up to 8 iTDs (for qsets for isochronous transfers)
+ * @qset_dma: DMA address for this qset
+ * @whc: WHCI HC this qset is for
+ * @ep: endpoint
+ * @stds: list of sTDs queued to this qset
+ * @ntds: number of qTDs queued (not necessarily the same as nTDs
+ * field in the QH)
+ * @td_start: index of the first qTD in the list
+ * @td_end: index of next free qTD in the list (provided
+ * ntds < WHCI_QSET_TD_MAX)
+ *
+ * Queue Sets (qsets) are added to the asynchronous schedule list
+ * (ASL) or the periodic zone list (PZL).
+ *
+ * qsets may contain up to 8 TDs (either qTDs or iTDs as appropriate).
+ * Each TD may refer to at most 1 MiB of data. If a single transfer
+ * has > 8MiB of data, TDs can be reused as they are completed since
+ * the TD list is used as a circular buffer. Similarly, several
+ * (smaller) transfers may be queued in a qset.
+ *
+ * WHCI controllers may cache portions of the qsets in the ASL and
+ * PZL, requiring the WHCD to inform the WHC that the lists have been
+ * updated (fields changed or qsets inserted or removed). For safe
+ * insertion and removal of qsets from the lists the schedule must be
+ * stopped to avoid races in updating the QH link pointers.
+ *
+ * Since the HC is free to execute qsets in any order, all transfers
+ * to an endpoint should use the same qset to ensure transfers are
+ * executed in the order they're submitted.
+ *
+ * [WHCI] section 3.2.3
+ */
+struct whc_qset {
+ struct whc_qhead qh;
+ union {
+ struct whc_qtd qtd[WHCI_QSET_TD_MAX];
+ struct whc_itd itd[WHCI_QSET_TD_MAX];
+ };
+
+ /* private data for WHCD */
+ dma_addr_t qset_dma;
+ struct whc *whc;
+ struct usb_host_endpoint *ep;
+ struct list_head stds;
+ int ntds;
+ int td_start;
+ int td_end;
+ struct list_head list_node;
+ unsigned in_sw_list:1;
+ unsigned in_hw_list:1;
+ unsigned remove:1;
+ struct urb *pause_after_urb;
+ struct completion remove_complete;
+ int max_burst;
+ int max_seq;
+};
+
+static inline void whc_qset_set_link_ptr(u64 *ptr, u64 target)
+{
+ if (target)
+ *ptr = (*ptr & ~(QH_LINK_PTR_MASK | QH_LINK_T)) | QH_LINK_PTR(target);
+ else
+ *ptr = QH_LINK_T;
+}
+
+/**
+ * struct di_buf_entry - Device Information (DI) buffer entry.
+ *
+ * There's one of these per connected device.
+ */
+struct di_buf_entry {
+ __le32 availability_info[8]; /*< MAS availability information, one MAS per bit */
+ __le32 addr_sec_info; /*< addressing and security info */
+ __le32 reserved[7];
+} __attribute__((packed));
+
+#define WHC_DI_SECURE (1 << 31)
+#define WHC_DI_DISABLE (1 << 30)
+#define WHC_DI_KEY_IDX(k) ((k) << 8)
+#define WHC_DI_KEY_IDX_MASK 0x0000ff00
+#define WHC_DI_DEV_ADDR(a) ((a) << 0)
+#define WHC_DI_DEV_ADDR_MASK 0x000000ff
+
+/**
+ * struct dn_buf_entry - Device Notification (DN) buffer entry.
+ *
+ * [WHCI] section 3.2.8
+ */
+struct dn_buf_entry {
+ __u8 msg_size; /*< number of octets of valid DN data */
+ __u8 reserved1;
+ __u8 src_addr; /*< source address */
+ __u8 status; /*< buffer entry status */
+ __le32 tkid; /*< TKID for source device, valid if secure bit is set */
+ __u8 dn_data[56]; /*< up to 56 octets of DN data */
+} __attribute__((packed));
+
+#define WHC_DN_STATUS_VALID (1 << 7) /* buffer entry is valid */
+#define WHC_DN_STATUS_SECURE (1 << 6) /* notification received using secure frame */
+
+#define WHC_N_DN_ENTRIES (4096 / sizeof(struct dn_buf_entry))
+
+/* The Add MMC IE WUSB Generic Command may take up to 256 bytes of
+ data. [WHCI] section 2.4.7. */
+#define WHC_GEN_CMD_DATA_LEN 256
+
+/*
+ * HC registers.
+ *
+ * [WHCI] section 2.4
+ */
+
+#define WHCIVERSION 0x00
+
+#define WHCSPARAMS 0x04
+# define WHCSPARAMS_TO_N_MMC_IES(p) (((p) >> 16) & 0xff)
+# define WHCSPARAMS_TO_N_KEYS(p) (((p) >> 8) & 0xff)
+# define WHCSPARAMS_TO_N_DEVICES(p) (((p) >> 0) & 0x7f)
+
+#define WUSBCMD 0x08
+# define WUSBCMD_BCID(b) ((b) << 16)
+# define WUSBCMD_BCID_MASK (0xff << 16)
+# define WUSBCMD_ASYNC_QSET_RM (1 << 12)
+# define WUSBCMD_PERIODIC_QSET_RM (1 << 11)
+# define WUSBCMD_WUSBSI(s) ((s) << 8)
+# define WUSBCMD_WUSBSI_MASK (0x7 << 8)
+# define WUSBCMD_ASYNC_SYNCED_DB (1 << 7)
+# define WUSBCMD_PERIODIC_SYNCED_DB (1 << 6)
+# define WUSBCMD_ASYNC_UPDATED (1 << 5)
+# define WUSBCMD_PERIODIC_UPDATED (1 << 4)
+# define WUSBCMD_ASYNC_EN (1 << 3)
+# define WUSBCMD_PERIODIC_EN (1 << 2)
+# define WUSBCMD_WHCRESET (1 << 1)
+# define WUSBCMD_RUN (1 << 0)
+
+#define WUSBSTS 0x0c
+# define WUSBSTS_ASYNC_SCHED (1 << 15)
+# define WUSBSTS_PERIODIC_SCHED (1 << 14)
+# define WUSBSTS_DNTS_SCHED (1 << 13)
+# define WUSBSTS_HCHALTED (1 << 12)
+# define WUSBSTS_GEN_CMD_DONE (1 << 9)
+# define WUSBSTS_CHAN_TIME_ROLLOVER (1 << 8)
+# define WUSBSTS_DNTS_OVERFLOW (1 << 7)
+# define WUSBSTS_BPST_ADJUSTMENT_CHANGED (1 << 6)
+# define WUSBSTS_HOST_ERR (1 << 5)
+# define WUSBSTS_ASYNC_SCHED_SYNCED (1 << 4)
+# define WUSBSTS_PERIODIC_SCHED_SYNCED (1 << 3)
+# define WUSBSTS_DNTS_INT (1 << 2)
+# define WUSBSTS_ERR_INT (1 << 1)
+# define WUSBSTS_INT (1 << 0)
+# define WUSBSTS_INT_MASK 0x3ff
+
+#define WUSBINTR 0x10
+# define WUSBINTR_GEN_CMD_DONE (1 << 9)
+# define WUSBINTR_CHAN_TIME_ROLLOVER (1 << 8)
+# define WUSBINTR_DNTS_OVERFLOW (1 << 7)
+# define WUSBINTR_BPST_ADJUSTMENT_CHANGED (1 << 6)
+# define WUSBINTR_HOST_ERR (1 << 5)
+# define WUSBINTR_ASYNC_SCHED_SYNCED (1 << 4)
+# define WUSBINTR_PERIODIC_SCHED_SYNCED (1 << 3)
+# define WUSBINTR_DNTS_INT (1 << 2)
+# define WUSBINTR_ERR_INT (1 << 1)
+# define WUSBINTR_INT (1 << 0)
+# define WUSBINTR_ALL 0x3ff
+
+#define WUSBGENCMDSTS 0x14
+# define WUSBGENCMDSTS_ACTIVE (1 << 31)
+# define WUSBGENCMDSTS_ERROR (1 << 24)
+# define WUSBGENCMDSTS_IOC (1 << 23)
+# define WUSBGENCMDSTS_MMCIE_ADD 0x01
+# define WUSBGENCMDSTS_MMCIE_RM 0x02
+# define WUSBGENCMDSTS_SET_MAS 0x03
+# define WUSBGENCMDSTS_CHAN_STOP 0x04
+# define WUSBGENCMDSTS_RWP_EN 0x05
+
+#define WUSBGENCMDPARAMS 0x18
+#define WUSBGENADDR 0x20
+#define WUSBASYNCLISTADDR 0x28
+#define WUSBDNTSBUFADDR 0x30
+#define WUSBDEVICEINFOADDR 0x38
+
+#define WUSBSETSECKEYCMD 0x40
+# define WUSBSETSECKEYCMD_SET (1 << 31)
+# define WUSBSETSECKEYCMD_ERASE (1 << 30)
+# define WUSBSETSECKEYCMD_GTK (1 << 8)
+# define WUSBSETSECKEYCMD_IDX(i) ((i) << 0)
+
+#define WUSBTKID 0x44
+#define WUSBSECKEY 0x48
+#define WUSBPERIODICLISTBASE 0x58
+#define WUSBMASINDEX 0x60
+
+#define WUSBDNTSCTRL 0x64
+# define WUSBDNTSCTRL_ACTIVE (1 << 31)
+# define WUSBDNTSCTRL_INTERVAL(i) ((i) << 8)
+# define WUSBDNTSCTRL_SLOTS(s) ((s) << 0)
+
+#define WUSBTIME 0x68
+#define WUSBBPST 0x6c
+#define WUSBDIBUPDATED 0x70
+
+#endif /* #ifndef _WHCI_WHCI_HC_H */
--- /dev/null
+/*
+ * Wireless Host Controller (WHC) WUSB operations.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/uwb/umc.h>
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+#include "../../wusbcore/wusbhc.h"
+
+#include "whcd.h"
+
+#if D_LOCAL >= 1
+static void dump_di(struct whc *whc, int idx)
+{
+ struct di_buf_entry *di = &whc->di_buf[idx];
+ struct device *dev = &whc->umc->dev;
+ char buf[128];
+
+ bitmap_scnprintf(buf, sizeof(buf), (unsigned long *)di->availability_info, UWB_NUM_MAS);
+
+ d_printf(1, dev, "DI[%d]\n", idx);
+ d_printf(1, dev, " availability: %s\n", buf);
+ d_printf(1, dev, " %c%c key idx: %d dev addr: %d\n",
+ (di->addr_sec_info & WHC_DI_SECURE) ? 'S' : ' ',
+ (di->addr_sec_info & WHC_DI_DISABLE) ? 'D' : ' ',
+ (di->addr_sec_info & WHC_DI_KEY_IDX_MASK) >> 8,
+ (di->addr_sec_info & WHC_DI_DEV_ADDR_MASK));
+}
+#else
+static inline void dump_di(struct whc *whc, int idx)
+{
+}
+#endif
+
+static int whc_update_di(struct whc *whc, int idx)
+{
+ int offset = idx / 32;
+ u32 bit = 1 << (idx % 32);
+
+ dump_di(whc, idx);
+
+ le_writel(bit, whc->base + WUSBDIBUPDATED + offset);
+
+ return whci_wait_for(&whc->umc->dev,
+ whc->base + WUSBDIBUPDATED + offset, bit, 0,
+ 100, "DI update");
+}
+
+/*
+ * WHCI starts and stops MMCs based on there being a valid GTK so
+ * these need only start/stop the asynchronous and periodic schedules.
+ */
+
+int whc_wusbhc_start(struct wusbhc *wusbhc)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+
+ asl_start(whc);
+ pzl_start(whc);
+
+ return 0;
+}
+
+void whc_wusbhc_stop(struct wusbhc *wusbhc)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+
+ pzl_stop(whc);
+ asl_stop(whc);
+}
+
+int whc_mmcie_add(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+ u8 handle, struct wuie_hdr *wuie)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ u32 params;
+
+ params = (interval << 24)
+ | (repeat_cnt << 16)
+ | (wuie->bLength << 8)
+ | handle;
+
+ return whc_do_gencmd(whc, WUSBGENCMDSTS_MMCIE_ADD, params, wuie, wuie->bLength);
+}
+
+int whc_mmcie_rm(struct wusbhc *wusbhc, u8 handle)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ u32 params;
+
+ params = handle;
+
+ return whc_do_gencmd(whc, WUSBGENCMDSTS_MMCIE_RM, params, NULL, 0);
+}
+
+int whc_bwa_set(struct wusbhc *wusbhc, s8 stream_index, const struct uwb_mas_bm *mas_bm)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+
+ if (stream_index >= 0)
+ whc_write_wusbcmd(whc, WUSBCMD_WUSBSI_MASK, WUSBCMD_WUSBSI(stream_index));
+
+ return whc_do_gencmd(whc, WUSBGENCMDSTS_SET_MAS, 0, (void *)mas_bm, sizeof(*mas_bm));
+}
+
+int whc_dev_info_set(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ int idx = wusb_dev->port_idx;
+ struct di_buf_entry *di = &whc->di_buf[idx];
+ int ret;
+
+ mutex_lock(&whc->mutex);
+
+ uwb_mas_bm_copy_le(di->availability_info, &wusb_dev->availability);
+ di->addr_sec_info &= ~(WHC_DI_DISABLE | WHC_DI_DEV_ADDR_MASK);
+ di->addr_sec_info |= WHC_DI_DEV_ADDR(wusb_dev->addr);
+
+ ret = whc_update_di(whc, idx);
+
+ mutex_unlock(&whc->mutex);
+
+ return ret;
+}
+
+/*
+ * Set the number of Device Notification Time Slots (DNTS) and enable
+ * device notifications.
+ */
+int whc_set_num_dnts(struct wusbhc *wusbhc, u8 interval, u8 slots)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ u32 dntsctrl;
+
+ dntsctrl = WUSBDNTSCTRL_ACTIVE
+ | WUSBDNTSCTRL_INTERVAL(interval)
+ | WUSBDNTSCTRL_SLOTS(slots);
+
+ le_writel(dntsctrl, whc->base + WUSBDNTSCTRL);
+
+ return 0;
+}
+
+static int whc_set_key(struct whc *whc, u8 key_index, uint32_t tkid,
+ const void *key, size_t key_size, bool is_gtk)
+{
+ uint32_t setkeycmd;
+ uint32_t seckey[4];
+ int i;
+ int ret;
+
+ memcpy(seckey, key, key_size);
+ setkeycmd = WUSBSETSECKEYCMD_SET | WUSBSETSECKEYCMD_IDX(key_index);
+ if (is_gtk)
+ setkeycmd |= WUSBSETSECKEYCMD_GTK;
+
+ le_writel(tkid, whc->base + WUSBTKID);
+ for (i = 0; i < 4; i++)
+ le_writel(seckey[i], whc->base + WUSBSECKEY + 4*i);
+ le_writel(setkeycmd, whc->base + WUSBSETSECKEYCMD);
+
+ ret = whci_wait_for(&whc->umc->dev, whc->base + WUSBSETSECKEYCMD,
+ WUSBSETSECKEYCMD_SET, 0, 100, "set key");
+
+ return ret;
+}
+
+/**
+ * whc_set_ptk - set the PTK to use for a device.
+ *
+ * The index into the key table for this PTK is the same as the
+ * device's port index.
+ */
+int whc_set_ptk(struct wusbhc *wusbhc, u8 port_idx, u32 tkid,
+ const void *ptk, size_t key_size)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ struct di_buf_entry *di = &whc->di_buf[port_idx];
+ int ret;
+
+ mutex_lock(&whc->mutex);
+
+ if (ptk) {
+ ret = whc_set_key(whc, port_idx, tkid, ptk, key_size, false);
+ if (ret)
+ goto out;
+
+ di->addr_sec_info &= ~WHC_DI_KEY_IDX_MASK;
+ di->addr_sec_info |= WHC_DI_SECURE | WHC_DI_KEY_IDX(port_idx);
+ } else
+ di->addr_sec_info &= ~WHC_DI_SECURE;
+
+ ret = whc_update_di(whc, port_idx);
+out:
+ mutex_unlock(&whc->mutex);
+ return ret;
+}
+
+/**
+ * whc_set_gtk - set the GTK for subsequent broadcast packets
+ *
+ * The GTK is stored in the last entry in the key table (the previous
+ * N_DEVICES entries are for the per-device PTKs).
+ */
+int whc_set_gtk(struct wusbhc *wusbhc, u32 tkid,
+ const void *gtk, size_t key_size)
+{
+ struct whc *whc = wusbhc_to_whc(wusbhc);
+ int ret;
+
+ mutex_lock(&whc->mutex);
+
+ ret = whc_set_key(whc, whc->n_devices, tkid, gtk, key_size, true);
+
+ mutex_unlock(&whc->mutex);
+
+ return ret;
+}
+
+int whc_set_cluster_id(struct whc *whc, u8 bcid)
+{
+ whc_write_wusbcmd(whc, WUSBCMD_BCID_MASK, WUSBCMD_BCID(bcid));
+ return 0;
+}
--- /dev/null
+#
+# Wireless USB Core configuration
+#
+config USB_WUSB
+ tristate "Enable Wireless USB extensions (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ depends on USB
+ select UWB
+ select CRYPTO
+ select CRYPTO_BLKCIPHER
+ select CRYPTO_CBC
+ select CRYPTO_MANAGER
+ select CRYPTO_AES
+ help
+ Enable the host-side support for Wireless USB.
+
+ To compile this support select Y (built in). It is safe to
+ select even if you don't have the hardware.
+
+config USB_WUSB_CBAF
+ tristate "Support WUSB Cable Based Association (CBA)"
+ depends on USB
+ help
+ Some WUSB devices support Cable Based Association. It's used to
+ enable the secure communication between the host and the
+ device.
+
+ Enable this option if your WUSB device must to be connected
+ via wired USB before establishing a wireless link.
+
+ It is safe to select even if you don't have a compatible
+ hardware.
+
+config USB_WUSB_CBAF_DEBUG
+ bool "Enable CBA debug messages"
+ depends on USB_WUSB_CBAF
+ help
+ Say Y here if you want the CBA to produce a bunch of debug messages
+ to the system log. Select this if you are having a problem with
+ CBA support and want to see more of what is going on.
+
--- /dev/null
+obj-$(CONFIG_USB_WUSB) += wusbcore.o
+obj-$(CONFIG_USB_HWA_HCD) += wusb-wa.o
+obj-$(CONFIG_USB_WUSB_CBAF) += wusb-cbaf.o
+
+
+wusbcore-objs := \
+ crypto.o \
+ devconnect.o \
+ dev-sysfs.o \
+ mmc.o \
+ pal.o \
+ rh.o \
+ reservation.o \
+ security.o \
+ wusbhc.o
+
+wusb-cbaf-objs := cbaf.o
+
+wusb-wa-objs := wa-hc.o \
+ wa-nep.o \
+ wa-rpipe.o \
+ wa-xfer.o
+
+ifeq ($(CONFIG_USB_WUSB_CBAF_DEBUG),y)
+EXTRA_CFLAGS += -DDEBUG
+endif
--- /dev/null
+/*
+ * Wireless USB - Cable Based Association
+ *
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * WUSB devices have to be paired (associated in WUSB lingo) so
+ * that they can connect to the system.
+ *
+ * One way of pairing is using CBA-Cable Based Association. First
+ * time you plug the device with a cable, association is done between
+ * host and device and subsequent times, you can connect wirelessly
+ * without having to associate again. That's the idea.
+ *
+ * This driver does nothing Earth shattering. It just provides an
+ * interface to chat with the wire-connected device so we can get a
+ * CDID (device ID) that might have been previously associated to a
+ * CHID (host ID) and to set up a new <CHID,CDID,CK> triplet
+ * (connection context), with the CK being the secret, or connection
+ * key. This is the pairing data.
+ *
+ * When a device with the CBA capability connects, the probe routine
+ * just creates a bunch of sysfs files that a user space enumeration
+ * manager uses to allow it to connect wirelessly to the system or not.
+ *
+ * The process goes like this:
+ *
+ * 1. Device plugs, cbaf is loaded, notifications happen.
+ *
+ * 2. The connection manager (CM) sees a device with CBAF capability
+ * (the wusb_chid etc. files in /sys/devices/blah/OURDEVICE).
+ *
+ * 3. The CM writes the host name, supported band groups, and the CHID
+ * (host ID) into the wusb_host_name, wusb_host_band_groups and
+ * wusb_chid files. These get sent to the device and the CDID (if
+ * any) for this host is requested.
+ *
+ * 4. The CM can verify that the device's supported band groups
+ * (wusb_device_band_groups) are compatible with the host.
+ *
+ * 5. The CM reads the wusb_cdid file.
+ *
+ * 6. The CM looks up its database
+ *
+ * 6.1 If it has a matching CHID,CDID entry, the device has been
+ * authorized before (paired) and nothing further needs to be
+ * done.
+ *
+ * 6.2 If the CDID is zero (or the CM doesn't find a matching CDID in
+ * its database), the device is assumed to be not known. The CM
+ * may associate the host with device by: writing a randomly
+ * generated CDID to wusb_cdid and then a random CK to wusb_ck
+ * (this uploads the new CC to the device).
+ *
+ * CMD may choose to prompt the user before associating with a new
+ * device.
+ *
+ * 7. Device is unplugged.
+ *
+ * When the device tries to connect wirelessly, it will present its
+ * CDID to the WUSB host controller. The CM will query the
+ * database. If the CHID/CDID pair found, it will (with a 4-way
+ * handshake) challenge the device to demonstrate it has the CK secret
+ * key (from our database) without actually exchanging it. Once
+ * satisfied, crypto keys are derived from the CK, the device is
+ * connected and all communication is encrypted.
+ *
+ * References:
+ * [WUSB-AM] Association Models Supplement to the Certified Wireless
+ * Universal Serial Bus Specification, version 1.0.
+ */
+#include <linux/module.h>
+#include <linux/ctype.h>
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/random.h>
+#include <linux/mutex.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/association.h>
+
+#define CBA_NAME_LEN 0x40 /* [WUSB-AM] table 4-7 */
+
+/* An instance of a Cable-Based-Association-Framework device */
+struct cbaf {
+ struct usb_device *usb_dev;
+ struct usb_interface *usb_iface;
+ void *buffer;
+ size_t buffer_size;
+
+ struct wusb_ckhdid chid;
+ char host_name[CBA_NAME_LEN];
+ u16 host_band_groups;
+
+ struct wusb_ckhdid cdid;
+ char device_name[CBA_NAME_LEN];
+ u16 device_band_groups;
+
+ struct wusb_ckhdid ck;
+};
+
+/*
+ * Verify that a CBAF USB-interface has what we need
+ *
+ * According to [WUSB-AM], CBA devices should provide at least two
+ * interfaces:
+ * - RETRIEVE_HOST_INFO
+ * - ASSOCIATE
+ *
+ * If the device doesn't provide these interfaces, we do not know how
+ * to deal with it.
+ */
+static int cbaf_check(struct cbaf *cbaf)
+{
+ int result;
+ struct device *dev = &cbaf->usb_iface->dev;
+ struct wusb_cbaf_assoc_info *assoc_info;
+ struct wusb_cbaf_assoc_request *assoc_request;
+ size_t assoc_size;
+ void *itr, *top;
+ int ar_rhi = 0, ar_assoc = 0;
+
+ result = usb_control_msg(
+ cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0),
+ CBAF_REQ_GET_ASSOCIATION_INFORMATION,
+ USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ cbaf->buffer, cbaf->buffer_size, 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Cannot get available association types: %d\n",
+ result);
+ return result;
+ }
+
+ assoc_info = cbaf->buffer;
+ if (result < sizeof(*assoc_info)) {
+ dev_err(dev, "Not enough data to decode association info "
+ "header (%zu vs %zu bytes required)\n",
+ (size_t)result, sizeof(*assoc_info));
+ return result;
+ }
+
+ assoc_size = le16_to_cpu(assoc_info->Length);
+ if (result < assoc_size) {
+ dev_err(dev, "Not enough data to decode association info "
+ "(%zu vs %zu bytes required)\n",
+ (size_t)assoc_size, sizeof(*assoc_info));
+ return result;
+ }
+ /*
+ * From now on, we just verify, but won't error out unless we
+ * don't find the AR_TYPE_WUSB_{RETRIEVE_HOST_INFO,ASSOCIATE}
+ * types.
+ */
+ itr = cbaf->buffer + sizeof(*assoc_info);
+ top = cbaf->buffer + assoc_size;
+ dev_dbg(dev, "Found %u association requests (%zu bytes)\n",
+ assoc_info->NumAssociationRequests, assoc_size);
+
+ while (itr < top) {
+ u16 ar_type, ar_subtype;
+ u32 ar_size;
+ const char *ar_name;
+
+ assoc_request = itr;
+
+ if (top - itr < sizeof(*assoc_request)) {
+ dev_err(dev, "Not enough data to decode associaton "
+ "request (%zu vs %zu bytes needed)\n",
+ top - itr, sizeof(*assoc_request));
+ break;
+ }
+
+ ar_type = le16_to_cpu(assoc_request->AssociationTypeId);
+ ar_subtype = le16_to_cpu(assoc_request->AssociationSubTypeId);
+ ar_size = le32_to_cpu(assoc_request->AssociationTypeInfoSize);
+ ar_name = "unknown";
+
+ switch (ar_type) {
+ case AR_TYPE_WUSB:
+ /* Verify we have what is mandated by [WUSB-AM]. */
+ switch (ar_subtype) {
+ case AR_TYPE_WUSB_RETRIEVE_HOST_INFO:
+ ar_name = "RETRIEVE_HOST_INFO";
+ ar_rhi = 1;
+ break;
+ case AR_TYPE_WUSB_ASSOCIATE:
+ /* send assoc data */
+ ar_name = "ASSOCIATE";
+ ar_assoc = 1;
+ break;
+ };
+ break;
+ };
+
+ dev_dbg(dev, "Association request #%02u: 0x%04x/%04x "
+ "(%zu bytes): %s\n",
+ assoc_request->AssociationDataIndex, ar_type,
+ ar_subtype, (size_t)ar_size, ar_name);
+
+ itr += sizeof(*assoc_request);
+ }
+
+ if (!ar_rhi) {
+ dev_err(dev, "Missing RETRIEVE_HOST_INFO association "
+ "request\n");
+ return -EINVAL;
+ }
+ if (!ar_assoc) {
+ dev_err(dev, "Missing ASSOCIATE association request\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct wusb_cbaf_host_info cbaf_host_info_defaults = {
+ .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId,
+ .AssociationTypeId = cpu_to_le16(AR_TYPE_WUSB),
+ .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+ .AssociationSubTypeId = cpu_to_le16(AR_TYPE_WUSB_RETRIEVE_HOST_INFO),
+ .CHID_hdr = WUSB_AR_CHID,
+ .LangID_hdr = WUSB_AR_LangID,
+ .HostFriendlyName_hdr = WUSB_AR_HostFriendlyName,
+};
+
+/* Send WUSB host information (CHID and name) to a CBAF device */
+static int cbaf_send_host_info(struct cbaf *cbaf)
+{
+ struct wusb_cbaf_host_info *hi;
+ size_t name_len;
+ size_t hi_size;
+
+ hi = cbaf->buffer;
+ memset(hi, 0, sizeof(*hi));
+ *hi = cbaf_host_info_defaults;
+ hi->CHID = cbaf->chid;
+ hi->LangID = 0; /* FIXME: I guess... */
+ strlcpy(hi->HostFriendlyName, cbaf->host_name, CBA_NAME_LEN);
+ name_len = strlen(cbaf->host_name);
+ hi->HostFriendlyName_hdr.len = cpu_to_le16(name_len);
+ hi_size = sizeof(*hi) + name_len;
+
+ return usb_control_msg(cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0),
+ CBAF_REQ_SET_ASSOCIATION_RESPONSE,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0x0101,
+ cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ hi, hi_size, 1000 /* FIXME: arbitrary */);
+}
+
+/*
+ * Get device's information (CDID) associated to CHID
+ *
+ * The device will return it's information (CDID, name, bandgroups)
+ * associated to the CHID we have set before, or 0 CDID and default
+ * name and bandgroup if no CHID set or unknown.
+ */
+static int cbaf_cdid_get(struct cbaf *cbaf)
+{
+ int result;
+ struct device *dev = &cbaf->usb_iface->dev;
+ struct wusb_cbaf_device_info *di;
+ size_t needed;
+
+ di = cbaf->buffer;
+ result = usb_control_msg(
+ cbaf->usb_dev, usb_rcvctrlpipe(cbaf->usb_dev, 0),
+ CBAF_REQ_GET_ASSOCIATION_REQUEST,
+ USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0x0200, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ di, cbaf->buffer_size, 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Cannot request device information: %d\n", result);
+ return result;
+ }
+
+ needed = result < sizeof(*di) ? sizeof(*di) : le32_to_cpu(di->Length);
+ if (result < needed) {
+ dev_err(dev, "Not enough data in DEVICE_INFO reply (%zu vs "
+ "%zu bytes needed)\n", (size_t)result, needed);
+ return result;
+ }
+
+ strlcpy(cbaf->device_name, di->DeviceFriendlyName, CBA_NAME_LEN);
+ cbaf->cdid = di->CDID;
+ cbaf->device_band_groups = le16_to_cpu(di->BandGroups);
+
+ return 0;
+}
+
+static ssize_t cbaf_wusb_chid_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+ char pr_chid[WUSB_CKHDID_STRSIZE];
+
+ ckhdid_printf(pr_chid, sizeof(pr_chid), &cbaf->chid);
+ return scnprintf(buf, PAGE_SIZE, "%s\n", pr_chid);
+}
+
+static ssize_t cbaf_wusb_chid_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ result = sscanf(buf,
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx",
+ &cbaf->chid.data[0] , &cbaf->chid.data[1],
+ &cbaf->chid.data[2] , &cbaf->chid.data[3],
+ &cbaf->chid.data[4] , &cbaf->chid.data[5],
+ &cbaf->chid.data[6] , &cbaf->chid.data[7],
+ &cbaf->chid.data[8] , &cbaf->chid.data[9],
+ &cbaf->chid.data[10], &cbaf->chid.data[11],
+ &cbaf->chid.data[12], &cbaf->chid.data[13],
+ &cbaf->chid.data[14], &cbaf->chid.data[15]);
+
+ if (result != 16)
+ return -EINVAL;
+
+ result = cbaf_send_host_info(cbaf);
+ if (result < 0)
+ return result;
+ result = cbaf_cdid_get(cbaf);
+ if (result < 0)
+ return -result;
+ return size;
+}
+static DEVICE_ATTR(wusb_chid, 0600, cbaf_wusb_chid_show, cbaf_wusb_chid_store);
+
+static ssize_t cbaf_wusb_host_name_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", cbaf->host_name);
+}
+
+static ssize_t cbaf_wusb_host_name_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ result = sscanf(buf, "%63s", cbaf->host_name);
+ if (result != 1)
+ return -EINVAL;
+
+ return size;
+}
+static DEVICE_ATTR(wusb_host_name, 0600, cbaf_wusb_host_name_show,
+ cbaf_wusb_host_name_store);
+
+static ssize_t cbaf_wusb_host_band_groups_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ return scnprintf(buf, PAGE_SIZE, "0x%04x\n", cbaf->host_band_groups);
+}
+
+static ssize_t cbaf_wusb_host_band_groups_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+ u16 band_groups = 0;
+
+ result = sscanf(buf, "%04hx", &band_groups);
+ if (result != 1)
+ return -EINVAL;
+
+ cbaf->host_band_groups = band_groups;
+
+ return size;
+}
+
+static DEVICE_ATTR(wusb_host_band_groups, 0600,
+ cbaf_wusb_host_band_groups_show,
+ cbaf_wusb_host_band_groups_store);
+
+static const struct wusb_cbaf_device_info cbaf_device_info_defaults = {
+ .Length_hdr = WUSB_AR_Length,
+ .CDID_hdr = WUSB_AR_CDID,
+ .BandGroups_hdr = WUSB_AR_BandGroups,
+ .LangID_hdr = WUSB_AR_LangID,
+ .DeviceFriendlyName_hdr = WUSB_AR_DeviceFriendlyName,
+};
+
+static ssize_t cbaf_wusb_cdid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+ char pr_cdid[WUSB_CKHDID_STRSIZE];
+
+ ckhdid_printf(pr_cdid, sizeof(pr_cdid), &cbaf->cdid);
+ return scnprintf(buf, PAGE_SIZE, "%s\n", pr_cdid);
+}
+
+static ssize_t cbaf_wusb_cdid_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+ struct wusb_ckhdid cdid;
+
+ result = sscanf(buf,
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx",
+ &cdid.data[0] , &cdid.data[1],
+ &cdid.data[2] , &cdid.data[3],
+ &cdid.data[4] , &cdid.data[5],
+ &cdid.data[6] , &cdid.data[7],
+ &cdid.data[8] , &cdid.data[9],
+ &cdid.data[10], &cdid.data[11],
+ &cdid.data[12], &cdid.data[13],
+ &cdid.data[14], &cdid.data[15]);
+ if (result != 16)
+ return -EINVAL;
+
+ cbaf->cdid = cdid;
+
+ return size;
+}
+static DEVICE_ATTR(wusb_cdid, 0600, cbaf_wusb_cdid_show, cbaf_wusb_cdid_store);
+
+static ssize_t cbaf_wusb_device_band_groups_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ return scnprintf(buf, PAGE_SIZE, "0x%04x\n", cbaf->device_band_groups);
+}
+
+static DEVICE_ATTR(wusb_device_band_groups, 0600,
+ cbaf_wusb_device_band_groups_show,
+ NULL);
+
+static ssize_t cbaf_wusb_device_name_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ return scnprintf(buf, PAGE_SIZE, "%s\n", cbaf->device_name);
+}
+static DEVICE_ATTR(wusb_device_name, 0600, cbaf_wusb_device_name_show, NULL);
+
+static const struct wusb_cbaf_cc_data cbaf_cc_data_defaults = {
+ .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId,
+ .AssociationTypeId = cpu_to_le16(AR_TYPE_WUSB),
+ .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+ .AssociationSubTypeId = cpu_to_le16(AR_TYPE_WUSB_ASSOCIATE),
+ .Length_hdr = WUSB_AR_Length,
+ .Length = cpu_to_le32(sizeof(struct wusb_cbaf_cc_data)),
+ .ConnectionContext_hdr = WUSB_AR_ConnectionContext,
+ .BandGroups_hdr = WUSB_AR_BandGroups,
+};
+
+static const struct wusb_cbaf_cc_data_fail cbaf_cc_data_fail_defaults = {
+ .AssociationTypeId_hdr = WUSB_AR_AssociationTypeId,
+ .AssociationSubTypeId_hdr = WUSB_AR_AssociationSubTypeId,
+ .Length_hdr = WUSB_AR_Length,
+ .AssociationStatus_hdr = WUSB_AR_AssociationStatus,
+};
+
+/*
+ * Send a new CC to the device.
+ */
+static int cbaf_cc_upload(struct cbaf *cbaf)
+{
+ int result;
+ struct device *dev = &cbaf->usb_iface->dev;
+ struct wusb_cbaf_cc_data *ccd;
+ char pr_cdid[WUSB_CKHDID_STRSIZE];
+
+ ccd = cbaf->buffer;
+ *ccd = cbaf_cc_data_defaults;
+ ccd->CHID = cbaf->chid;
+ ccd->CDID = cbaf->cdid;
+ ccd->CK = cbaf->ck;
+ ccd->BandGroups = cpu_to_le16(cbaf->host_band_groups);
+
+ dev_dbg(dev, "Trying to upload CC:\n");
+ ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CHID);
+ dev_dbg(dev, " CHID %s\n", pr_cdid);
+ ckhdid_printf(pr_cdid, sizeof(pr_cdid), &ccd->CDID);
+ dev_dbg(dev, " CDID %s\n", pr_cdid);
+ dev_dbg(dev, " Bandgroups 0x%04x\n", cbaf->host_band_groups);
+
+ result = usb_control_msg(
+ cbaf->usb_dev, usb_sndctrlpipe(cbaf->usb_dev, 0),
+ CBAF_REQ_SET_ASSOCIATION_RESPONSE,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0x0201, cbaf->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ ccd, sizeof(*ccd), 1000 /* FIXME: arbitrary */);
+
+ return result;
+}
+
+static ssize_t cbaf_wusb_ck_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ struct usb_interface *iface = to_usb_interface(dev);
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+
+ result = sscanf(buf,
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx",
+ &cbaf->ck.data[0] , &cbaf->ck.data[1],
+ &cbaf->ck.data[2] , &cbaf->ck.data[3],
+ &cbaf->ck.data[4] , &cbaf->ck.data[5],
+ &cbaf->ck.data[6] , &cbaf->ck.data[7],
+ &cbaf->ck.data[8] , &cbaf->ck.data[9],
+ &cbaf->ck.data[10], &cbaf->ck.data[11],
+ &cbaf->ck.data[12], &cbaf->ck.data[13],
+ &cbaf->ck.data[14], &cbaf->ck.data[15]);
+ if (result != 16)
+ return -EINVAL;
+
+ result = cbaf_cc_upload(cbaf);
+ if (result < 0)
+ return result;
+
+ return size;
+}
+static DEVICE_ATTR(wusb_ck, 0600, NULL, cbaf_wusb_ck_store);
+
+static struct attribute *cbaf_dev_attrs[] = {
+ &dev_attr_wusb_host_name.attr,
+ &dev_attr_wusb_host_band_groups.attr,
+ &dev_attr_wusb_chid.attr,
+ &dev_attr_wusb_cdid.attr,
+ &dev_attr_wusb_device_name.attr,
+ &dev_attr_wusb_device_band_groups.attr,
+ &dev_attr_wusb_ck.attr,
+ NULL,
+};
+
+static struct attribute_group cbaf_dev_attr_group = {
+ .name = NULL, /* we want them in the same directory */
+ .attrs = cbaf_dev_attrs,
+};
+
+static int cbaf_probe(struct usb_interface *iface,
+ const struct usb_device_id *id)
+{
+ struct cbaf *cbaf;
+ struct device *dev = &iface->dev;
+ int result = -ENOMEM;
+
+ cbaf = kzalloc(sizeof(*cbaf), GFP_KERNEL);
+ if (cbaf == NULL)
+ goto error_kzalloc;
+ cbaf->buffer = kmalloc(512, GFP_KERNEL);
+ if (cbaf->buffer == NULL)
+ goto error_kmalloc_buffer;
+
+ cbaf->buffer_size = 512;
+ cbaf->usb_dev = usb_get_dev(interface_to_usbdev(iface));
+ cbaf->usb_iface = usb_get_intf(iface);
+ result = cbaf_check(cbaf);
+ if (result < 0) {
+ dev_err(dev, "This device is not WUSB-CBAF compliant"
+ "and is not supported yet.\n");
+ goto error_check;
+ }
+
+ result = sysfs_create_group(&dev->kobj, &cbaf_dev_attr_group);
+ if (result < 0) {
+ dev_err(dev, "Can't register sysfs attr group: %d\n", result);
+ goto error_create_group;
+ }
+ usb_set_intfdata(iface, cbaf);
+ return 0;
+
+error_create_group:
+error_check:
+ kfree(cbaf->buffer);
+error_kmalloc_buffer:
+ kfree(cbaf);
+error_kzalloc:
+ return result;
+}
+
+static void cbaf_disconnect(struct usb_interface *iface)
+{
+ struct cbaf *cbaf = usb_get_intfdata(iface);
+ struct device *dev = &iface->dev;
+ sysfs_remove_group(&dev->kobj, &cbaf_dev_attr_group);
+ usb_set_intfdata(iface, NULL);
+ usb_put_intf(iface);
+ kfree(cbaf->buffer);
+ /* paranoia: clean up crypto keys */
+ memset(cbaf, 0, sizeof(*cbaf));
+ kfree(cbaf);
+}
+
+static struct usb_device_id cbaf_id_table[] = {
+ { USB_INTERFACE_INFO(0xef, 0x03, 0x01), },
+ { },
+};
+MODULE_DEVICE_TABLE(usb, cbaf_id_table);
+
+static struct usb_driver cbaf_driver = {
+ .name = "wusb-cbaf",
+ .id_table = cbaf_id_table,
+ .probe = cbaf_probe,
+ .disconnect = cbaf_disconnect,
+};
+
+static int __init cbaf_driver_init(void)
+{
+ return usb_register(&cbaf_driver);
+}
+module_init(cbaf_driver_init);
+
+static void __exit cbaf_driver_exit(void)
+{
+ usb_deregister(&cbaf_driver);
+}
+module_exit(cbaf_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB Cable Based Association");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Ultra Wide Band
+ * AES-128 CCM Encryption
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We don't do any encryption here; we use the Linux Kernel's AES-128
+ * crypto modules to construct keys and payload blocks in a way
+ * defined by WUSB1.0[6]. Check the erratas, as typos are are patched
+ * there.
+ *
+ * Thanks a zillion to John Keys for his help and clarifications over
+ * the designed-by-a-committee text.
+ *
+ * So the idea is that there is this basic Pseudo-Random-Function
+ * defined in WUSB1.0[6.5] which is the core of everything. It works
+ * by tweaking some blocks, AES crypting them and then xoring
+ * something else with them (this seems to be called CBC(AES) -- can
+ * you tell I know jack about crypto?). So we just funnel it into the
+ * Linux Crypto API.
+ *
+ * We leave a crypto test module so we can verify that vectors match,
+ * every now and then.
+ *
+ * Block size: 16 bytes -- AES seems to do things in 'block sizes'. I
+ * am learning a lot...
+ *
+ * Conveniently, some data structures that need to be
+ * funneled through AES are...16 bytes in size!
+ */
+
+#include <linux/crypto.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/scatterlist.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+/*
+ * Block of data, as understood by AES-CCM
+ *
+ * The code assumes this structure is nothing but a 16 byte array
+ * (packed in a struct to avoid common mess ups that I usually do with
+ * arrays and enforcing type checking).
+ */
+struct aes_ccm_block {
+ u8 data[16];
+} __attribute__((packed));
+
+/*
+ * Counter-mode Blocks (WUSB1.0[6.4])
+ *
+ * According to CCM (or so it seems), for the purpose of calculating
+ * the MIC, the message is broken in N counter-mode blocks, B0, B1,
+ * ... BN.
+ *
+ * B0 contains flags, the CCM nonce and l(m).
+ *
+ * B1 contains l(a), the MAC header, the encryption offset and padding.
+ *
+ * If EO is nonzero, additional blocks are built from payload bytes
+ * until EO is exahusted (FIXME: padding to 16 bytes, I guess). The
+ * padding is not xmitted.
+ */
+
+/* WUSB1.0[T6.4] */
+struct aes_ccm_b0 {
+ u8 flags; /* 0x59, per CCM spec */
+ struct aes_ccm_nonce ccm_nonce;
+ __be16 lm;
+} __attribute__((packed));
+
+/* WUSB1.0[T6.5] */
+struct aes_ccm_b1 {
+ __be16 la;
+ u8 mac_header[10];
+ __le16 eo;
+ u8 security_reserved; /* This is always zero */
+ u8 padding; /* 0 */
+} __attribute__((packed));
+
+/*
+ * Encryption Blocks (WUSB1.0[6.4.4])
+ *
+ * CCM uses Ax blocks to generate a keystream with which the MIC and
+ * the message's payload are encoded. A0 always encrypts/decrypts the
+ * MIC. Ax (x>0) are used for the sucesive payload blocks.
+ *
+ * The x is the counter, and is increased for each block.
+ */
+struct aes_ccm_a {
+ u8 flags; /* 0x01, per CCM spec */
+ struct aes_ccm_nonce ccm_nonce;
+ __be16 counter; /* Value of x */
+} __attribute__((packed));
+
+static void bytewise_xor(void *_bo, const void *_bi1, const void *_bi2,
+ size_t size)
+{
+ u8 *bo = _bo;
+ const u8 *bi1 = _bi1, *bi2 = _bi2;
+ size_t itr;
+ for (itr = 0; itr < size; itr++)
+ bo[itr] = bi1[itr] ^ bi2[itr];
+}
+
+/*
+ * CC-MAC function WUSB1.0[6.5]
+ *
+ * Take a data string and produce the encrypted CBC Counter-mode MIC
+ *
+ * Note the names for most function arguments are made to (more or
+ * less) match those used in the pseudo-function definition given in
+ * WUSB1.0[6.5].
+ *
+ * @tfm_cbc: CBC(AES) blkcipher handle (initialized)
+ *
+ * @tfm_aes: AES cipher handle (initialized)
+ *
+ * @mic: buffer for placing the computed MIC (Message Integrity
+ * Code). This is exactly 8 bytes, and we expect the buffer to
+ * be at least eight bytes in length.
+ *
+ * @key: 128 bit symmetric key
+ *
+ * @n: CCM nonce
+ *
+ * @a: ASCII string, 14 bytes long (I guess zero padded if needed;
+ * we use exactly 14 bytes).
+ *
+ * @b: data stream to be processed; cannot be a global or const local
+ * (will confuse the scatterlists)
+ *
+ * @blen: size of b...
+ *
+ * Still not very clear how this is done, but looks like this: we
+ * create block B0 (as WUSB1.0[6.5] says), then we AES-crypt it with
+ * @key. We bytewise xor B0 with B1 (1) and AES-crypt that. Then we
+ * take the payload and divide it in blocks (16 bytes), xor them with
+ * the previous crypto result (16 bytes) and crypt it, repeat the next
+ * block with the output of the previous one, rinse wash (I guess this
+ * is what AES CBC mode means...but I truly have no idea). So we use
+ * the CBC(AES) blkcipher, that does precisely that. The IV (Initial
+ * Vector) is 16 bytes and is set to zero, so
+ *
+ * See rfc3610. Linux crypto has a CBC implementation, but the
+ * documentation is scarce, to say the least, and the example code is
+ * so intricated that is difficult to understand how things work. Most
+ * of this is guess work -- bite me.
+ *
+ * (1) Created as 6.5 says, again, using as l(a) 'Blen + 14', and
+ * using the 14 bytes of @a to fill up
+ * b1.{mac_header,e0,security_reserved,padding}.
+ *
+ * NOTE: The definiton of l(a) in WUSB1.0[6.5] vs the definition of
+ * l(m) is orthogonal, they bear no relationship, so it is not
+ * in conflict with the parameter's relation that
+ * WUSB1.0[6.4.2]) defines.
+ *
+ * NOTE: WUSB1.0[A.1]: Host Nonce is missing a nibble? (1e); fixed in
+ * first errata released on 2005/07.
+ *
+ * NOTE: we need to clean IV to zero at each invocation to make sure
+ * we start with a fresh empty Initial Vector, so that the CBC
+ * works ok.
+ *
+ * NOTE: blen is not aligned to a block size, we'll pad zeros, that's
+ * what sg[4] is for. Maybe there is a smarter way to do this.
+ */
+static int wusb_ccm_mac(struct crypto_blkcipher *tfm_cbc,
+ struct crypto_cipher *tfm_aes, void *mic,
+ const struct aes_ccm_nonce *n,
+ const struct aes_ccm_label *a, const void *b,
+ size_t blen)
+{
+ int result = 0;
+ struct blkcipher_desc desc;
+ struct aes_ccm_b0 b0;
+ struct aes_ccm_b1 b1;
+ struct aes_ccm_a ax;
+ struct scatterlist sg[4], sg_dst;
+ void *iv, *dst_buf;
+ size_t ivsize, dst_size;
+ const u8 bzero[16] = { 0 };
+ size_t zero_padding;
+
+ d_fnstart(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
+ "n %p, a %p, b %p, blen %zu)\n",
+ tfm_cbc, tfm_aes, mic, n, a, b, blen);
+ /*
+ * These checks should be compile time optimized out
+ * ensure @a fills b1's mac_header and following fields
+ */
+ WARN_ON(sizeof(*a) != sizeof(b1) - sizeof(b1.la));
+ WARN_ON(sizeof(b0) != sizeof(struct aes_ccm_block));
+ WARN_ON(sizeof(b1) != sizeof(struct aes_ccm_block));
+ WARN_ON(sizeof(ax) != sizeof(struct aes_ccm_block));
+
+ result = -ENOMEM;
+ zero_padding = sizeof(struct aes_ccm_block)
+ - blen % sizeof(struct aes_ccm_block);
+ zero_padding = blen % sizeof(struct aes_ccm_block);
+ if (zero_padding)
+ zero_padding = sizeof(struct aes_ccm_block) - zero_padding;
+ dst_size = blen + sizeof(b0) + sizeof(b1) + zero_padding;
+ dst_buf = kzalloc(dst_size, GFP_KERNEL);
+ if (dst_buf == NULL) {
+ printk(KERN_ERR "E: can't alloc destination buffer\n");
+ goto error_dst_buf;
+ }
+
+ iv = crypto_blkcipher_crt(tfm_cbc)->iv;
+ ivsize = crypto_blkcipher_ivsize(tfm_cbc);
+ memset(iv, 0, ivsize);
+
+ /* Setup B0 */
+ b0.flags = 0x59; /* Format B0 */
+ b0.ccm_nonce = *n;
+ b0.lm = cpu_to_be16(0); /* WUSB1.0[6.5] sez l(m) is 0 */
+
+ /* Setup B1
+ *
+ * The WUSB spec is anything but clear! WUSB1.0[6.5]
+ * says that to initialize B1 from A with 'l(a) = blen +
+ * 14'--after clarification, it means to use A's contents
+ * for MAC Header, EO, sec reserved and padding.
+ */
+ b1.la = cpu_to_be16(blen + 14);
+ memcpy(&b1.mac_header, a, sizeof(*a));
+
+ d_printf(4, NULL, "I: B0 (%zu bytes)\n", sizeof(b0));
+ d_dump(4, NULL, &b0, sizeof(b0));
+ d_printf(4, NULL, "I: B1 (%zu bytes)\n", sizeof(b1));
+ d_dump(4, NULL, &b1, sizeof(b1));
+ d_printf(4, NULL, "I: B (%zu bytes)\n", blen);
+ d_dump(4, NULL, b, blen);
+ d_printf(4, NULL, "I: B 0-padding (%zu bytes)\n", zero_padding);
+ d_printf(4, NULL, "D: IV before crypto (%zu)\n", ivsize);
+ d_dump(4, NULL, iv, ivsize);
+
+ sg_init_table(sg, ARRAY_SIZE(sg));
+ sg_set_buf(&sg[0], &b0, sizeof(b0));
+ sg_set_buf(&sg[1], &b1, sizeof(b1));
+ sg_set_buf(&sg[2], b, blen);
+ /* 0 if well behaved :) */
+ sg_set_buf(&sg[3], bzero, zero_padding);
+ sg_init_one(&sg_dst, dst_buf, dst_size);
+
+ desc.tfm = tfm_cbc;
+ desc.flags = 0;
+ result = crypto_blkcipher_encrypt(&desc, &sg_dst, sg, dst_size);
+ if (result < 0) {
+ printk(KERN_ERR "E: can't compute CBC-MAC tag (MIC): %d\n",
+ result);
+ goto error_cbc_crypt;
+ }
+ d_printf(4, NULL, "D: MIC tag\n");
+ d_dump(4, NULL, iv, ivsize);
+
+ /* Now we crypt the MIC Tag (*iv) with Ax -- values per WUSB1.0[6.5]
+ * The procedure is to AES crypt the A0 block and XOR the MIC
+ * Tag agains it; we only do the first 8 bytes and place it
+ * directly in the destination buffer.
+ *
+ * POS Crypto API: size is assumed to be AES's block size.
+ * Thanks for documenting it -- tip taken from airo.c
+ */
+ ax.flags = 0x01; /* as per WUSB 1.0 spec */
+ ax.ccm_nonce = *n;
+ ax.counter = 0;
+ crypto_cipher_encrypt_one(tfm_aes, (void *)&ax, (void *)&ax);
+ bytewise_xor(mic, &ax, iv, 8);
+ d_printf(4, NULL, "D: CTR[MIC]\n");
+ d_dump(4, NULL, &ax, 8);
+ d_printf(4, NULL, "D: CCM-MIC tag\n");
+ d_dump(4, NULL, mic, 8);
+ result = 8;
+error_cbc_crypt:
+ kfree(dst_buf);
+error_dst_buf:
+ d_fnend(3, NULL, "(tfm_cbc %p, tfm_aes %p, mic %p, "
+ "n %p, a %p, b %p, blen %zu)\n",
+ tfm_cbc, tfm_aes, mic, n, a, b, blen);
+ return result;
+}
+
+/*
+ * WUSB Pseudo Random Function (WUSB1.0[6.5])
+ *
+ * @b: buffer to the source data; cannot be a global or const local
+ * (will confuse the scatterlists)
+ */
+ssize_t wusb_prf(void *out, size_t out_size,
+ const u8 key[16], const struct aes_ccm_nonce *_n,
+ const struct aes_ccm_label *a,
+ const void *b, size_t blen, size_t len)
+{
+ ssize_t result, bytes = 0, bitr;
+ struct aes_ccm_nonce n = *_n;
+ struct crypto_blkcipher *tfm_cbc;
+ struct crypto_cipher *tfm_aes;
+ u64 sfn = 0;
+ __le64 sfn_le;
+
+ d_fnstart(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
+ "a %p, b %p, blen %zu, len %zu)\n", out, out_size,
+ key, _n, a, b, blen, len);
+
+ tfm_cbc = crypto_alloc_blkcipher("cbc(aes)", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(tfm_cbc)) {
+ result = PTR_ERR(tfm_cbc);
+ printk(KERN_ERR "E: can't load CBC(AES): %d\n", (int)result);
+ goto error_alloc_cbc;
+ }
+ result = crypto_blkcipher_setkey(tfm_cbc, key, 16);
+ if (result < 0) {
+ printk(KERN_ERR "E: can't set CBC key: %d\n", (int)result);
+ goto error_setkey_cbc;
+ }
+
+ tfm_aes = crypto_alloc_cipher("aes", 0, CRYPTO_ALG_ASYNC);
+ if (IS_ERR(tfm_aes)) {
+ result = PTR_ERR(tfm_aes);
+ printk(KERN_ERR "E: can't load AES: %d\n", (int)result);
+ goto error_alloc_aes;
+ }
+ result = crypto_cipher_setkey(tfm_aes, key, 16);
+ if (result < 0) {
+ printk(KERN_ERR "E: can't set AES key: %d\n", (int)result);
+ goto error_setkey_aes;
+ }
+
+ for (bitr = 0; bitr < (len + 63) / 64; bitr++) {
+ sfn_le = cpu_to_le64(sfn++);
+ memcpy(&n.sfn, &sfn_le, sizeof(n.sfn)); /* n.sfn++... */
+ result = wusb_ccm_mac(tfm_cbc, tfm_aes, out + bytes,
+ &n, a, b, blen);
+ if (result < 0)
+ goto error_ccm_mac;
+ bytes += result;
+ }
+ result = bytes;
+error_ccm_mac:
+error_setkey_aes:
+ crypto_free_cipher(tfm_aes);
+error_alloc_aes:
+error_setkey_cbc:
+ crypto_free_blkcipher(tfm_cbc);
+error_alloc_cbc:
+ d_fnend(3, NULL, "(out %p, out_size %zu, key %p, _n %p, "
+ "a %p, b %p, blen %zu, len %zu) = %d\n", out, out_size,
+ key, _n, a, b, blen, len, (int)bytes);
+ return result;
+}
+
+/* WUSB1.0[A.2] test vectors */
+static const u8 stv_hsmic_key[16] = {
+ 0x4b, 0x79, 0xa3, 0xcf, 0xe5, 0x53, 0x23, 0x9d,
+ 0xd7, 0xc1, 0x6d, 0x1c, 0x2d, 0xab, 0x6d, 0x3f
+};
+
+static const struct aes_ccm_nonce stv_hsmic_n = {
+ .sfn = { 0 },
+ .tkid = { 0x76, 0x98, 0x01, },
+ .dest_addr = { .data = { 0xbe, 0x00 } },
+ .src_addr = { .data = { 0x76, 0x98 } },
+};
+
+/*
+ * Out-of-band MIC Generation verification code
+ *
+ */
+static int wusb_oob_mic_verify(void)
+{
+ int result;
+ u8 mic[8];
+ /* WUSB1.0[A.2] test vectors
+ *
+ * Need to keep it in the local stack as GCC 4.1.3something
+ * messes up and generates noise.
+ */
+ struct usb_handshake stv_hsmic_hs = {
+ .bMessageNumber = 2,
+ .bStatus = 00,
+ .tTKID = { 0x76, 0x98, 0x01 },
+ .bReserved = 00,
+ .CDID = { 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
+ 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b,
+ 0x3c, 0x3d, 0x3e, 0x3f },
+ .nonce = { 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
+ 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b,
+ 0x2c, 0x2d, 0x2e, 0x2f },
+ .MIC = { 0x75, 0x6a, 0x97, 0x51, 0x0c, 0x8c,
+ 0x14, 0x7b } ,
+ };
+ size_t hs_size;
+
+ result = wusb_oob_mic(mic, stv_hsmic_key, &stv_hsmic_n, &stv_hsmic_hs);
+ if (result < 0)
+ printk(KERN_ERR "E: WUSB OOB MIC test: failed: %d\n", result);
+ else if (memcmp(stv_hsmic_hs.MIC, mic, sizeof(mic))) {
+ printk(KERN_ERR "E: OOB MIC test: "
+ "mismatch between MIC result and WUSB1.0[A2]\n");
+ hs_size = sizeof(stv_hsmic_hs) - sizeof(stv_hsmic_hs.MIC);
+ printk(KERN_ERR "E: Handshake2 in: (%zu bytes)\n", hs_size);
+ dump_bytes(NULL, &stv_hsmic_hs, hs_size);
+ printk(KERN_ERR "E: CCM Nonce in: (%zu bytes)\n",
+ sizeof(stv_hsmic_n));
+ dump_bytes(NULL, &stv_hsmic_n, sizeof(stv_hsmic_n));
+ printk(KERN_ERR "E: MIC out:\n");
+ dump_bytes(NULL, mic, sizeof(mic));
+ printk(KERN_ERR "E: MIC out (from WUSB1.0[A.2]):\n");
+ dump_bytes(NULL, stv_hsmic_hs.MIC, sizeof(stv_hsmic_hs.MIC));
+ result = -EINVAL;
+ } else
+ result = 0;
+ return result;
+}
+
+/*
+ * Test vectors for Key derivation
+ *
+ * These come from WUSB1.0[6.5.1], the vectors in WUSB1.0[A.1]
+ * (errata corrected in 2005/07).
+ */
+static const u8 stv_key_a1[16] __attribute__ ((__aligned__(4))) = {
+ 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87,
+ 0x78, 0x69, 0x5a, 0x4b, 0x3c, 0x2d, 0x1e, 0x0f
+};
+
+static const struct aes_ccm_nonce stv_keydvt_n_a1 = {
+ .sfn = { 0 },
+ .tkid = { 0x76, 0x98, 0x01, },
+ .dest_addr = { .data = { 0xbe, 0x00 } },
+ .src_addr = { .data = { 0x76, 0x98 } },
+};
+
+static const struct wusb_keydvt_out stv_keydvt_out_a1 = {
+ .kck = {
+ 0x4b, 0x79, 0xa3, 0xcf, 0xe5, 0x53, 0x23, 0x9d,
+ 0xd7, 0xc1, 0x6d, 0x1c, 0x2d, 0xab, 0x6d, 0x3f
+ },
+ .ptk = {
+ 0xc8, 0x70, 0x62, 0x82, 0xb6, 0x7c, 0xe9, 0x06,
+ 0x7b, 0xc5, 0x25, 0x69, 0xf2, 0x36, 0x61, 0x2d
+ }
+};
+
+/*
+ * Performa a test to make sure we match the vectors defined in
+ * WUSB1.0[A.1](Errata2006/12)
+ */
+static int wusb_key_derive_verify(void)
+{
+ int result = 0;
+ struct wusb_keydvt_out keydvt_out;
+ /* These come from WUSB1.0[A.1] + 2006/12 errata
+ * NOTE: can't make this const or global -- somehow it seems
+ * the scatterlists for crypto get confused and we get
+ * bad data. There is no doc on this... */
+ struct wusb_keydvt_in stv_keydvt_in_a1 = {
+ .hnonce = {
+ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
+ 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f
+ },
+ .dnonce = {
+ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
+ 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f
+ }
+ };
+
+ result = wusb_key_derive(&keydvt_out, stv_key_a1, &stv_keydvt_n_a1,
+ &stv_keydvt_in_a1);
+ if (result < 0)
+ printk(KERN_ERR "E: WUSB key derivation test: "
+ "derivation failed: %d\n", result);
+ if (memcmp(&stv_keydvt_out_a1, &keydvt_out, sizeof(keydvt_out))) {
+ printk(KERN_ERR "E: WUSB key derivation test: "
+ "mismatch between key derivation result "
+ "and WUSB1.0[A1] Errata 2006/12\n");
+ printk(KERN_ERR "E: keydvt in: key (%zu bytes)\n",
+ sizeof(stv_key_a1));
+ dump_bytes(NULL, stv_key_a1, sizeof(stv_key_a1));
+ printk(KERN_ERR "E: keydvt in: nonce (%zu bytes)\n",
+ sizeof(stv_keydvt_n_a1));
+ dump_bytes(NULL, &stv_keydvt_n_a1, sizeof(stv_keydvt_n_a1));
+ printk(KERN_ERR "E: keydvt in: hnonce & dnonce (%zu bytes)\n",
+ sizeof(stv_keydvt_in_a1));
+ dump_bytes(NULL, &stv_keydvt_in_a1, sizeof(stv_keydvt_in_a1));
+ printk(KERN_ERR "E: keydvt out: KCK\n");
+ dump_bytes(NULL, &keydvt_out.kck, sizeof(keydvt_out.kck));
+ printk(KERN_ERR "E: keydvt out: PTK\n");
+ dump_bytes(NULL, &keydvt_out.ptk, sizeof(keydvt_out.ptk));
+ result = -EINVAL;
+ } else
+ result = 0;
+ return result;
+}
+
+/*
+ * Initialize crypto system
+ *
+ * FIXME: we do nothing now, other than verifying. Later on we'll
+ * cache the encryption stuff, so that's why we have a separate init.
+ */
+int wusb_crypto_init(void)
+{
+ int result;
+
+ result = wusb_key_derive_verify();
+ if (result < 0)
+ return result;
+ return wusb_oob_mic_verify();
+}
+
+void wusb_crypto_exit(void)
+{
+ /* FIXME: free cached crypto transforms */
+}
--- /dev/null
+/*
+ * WUSB devices
+ * sysfs bindings
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Get them out of the way...
+ */
+
+#include <linux/jiffies.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 4
+#include <linux/uwb/debug.h>
+
+static ssize_t wusb_disconnect_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct usb_device *usb_dev;
+ struct wusbhc *wusbhc;
+ unsigned command;
+ u8 port_idx;
+
+ if (sscanf(buf, "%u", &command) != 1)
+ return -EINVAL;
+ if (command == 0)
+ return size;
+ usb_dev = to_usb_device(dev);
+ wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+ if (wusbhc == NULL)
+ return -ENODEV;
+
+ mutex_lock(&wusbhc->mutex);
+ port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+ __wusbhc_dev_disable(wusbhc, port_idx);
+ mutex_unlock(&wusbhc->mutex);
+ wusbhc_put(wusbhc);
+ return size;
+}
+static DEVICE_ATTR(wusb_disconnect, 0200, NULL, wusb_disconnect_store);
+
+static ssize_t wusb_cdid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ ssize_t result;
+ struct wusb_dev *wusb_dev;
+
+ wusb_dev = wusb_dev_get_by_usb_dev(to_usb_device(dev));
+ if (wusb_dev == NULL)
+ return -ENODEV;
+ result = ckhdid_printf(buf, PAGE_SIZE, &wusb_dev->cdid);
+ strcat(buf, "\n");
+ wusb_dev_put(wusb_dev);
+ return result + 1;
+}
+static DEVICE_ATTR(wusb_cdid, 0444, wusb_cdid_show, NULL);
+
+static ssize_t wusb_ck_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ int result;
+ struct usb_device *usb_dev;
+ struct wusbhc *wusbhc;
+ struct wusb_ckhdid ck;
+
+ result = sscanf(buf,
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx\n",
+ &ck.data[0] , &ck.data[1],
+ &ck.data[2] , &ck.data[3],
+ &ck.data[4] , &ck.data[5],
+ &ck.data[6] , &ck.data[7],
+ &ck.data[8] , &ck.data[9],
+ &ck.data[10], &ck.data[11],
+ &ck.data[12], &ck.data[13],
+ &ck.data[14], &ck.data[15]);
+ if (result != 16)
+ return -EINVAL;
+
+ usb_dev = to_usb_device(dev);
+ wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+ if (wusbhc == NULL)
+ return -ENODEV;
+ result = wusb_dev_4way_handshake(wusbhc, usb_dev->wusb_dev, &ck);
+ memset(&ck, 0, sizeof(ck));
+ wusbhc_put(wusbhc);
+ return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_ck, 0200, NULL, wusb_ck_store);
+
+static struct attribute *wusb_dev_attrs[] = {
+ &dev_attr_wusb_disconnect.attr,
+ &dev_attr_wusb_cdid.attr,
+ &dev_attr_wusb_ck.attr,
+ NULL,
+};
+
+static struct attribute_group wusb_dev_attr_group = {
+ .name = NULL, /* we want them in the same directory */
+ .attrs = wusb_dev_attrs,
+};
+
+int wusb_dev_sysfs_add(struct wusbhc *wusbhc, struct usb_device *usb_dev,
+ struct wusb_dev *wusb_dev)
+{
+ int result = sysfs_create_group(&usb_dev->dev.kobj,
+ &wusb_dev_attr_group);
+ struct device *dev = &usb_dev->dev;
+ if (result < 0)
+ dev_err(dev, "Cannot register WUSB-dev attributes: %d\n",
+ result);
+ return result;
+}
+
+void wusb_dev_sysfs_rm(struct wusb_dev *wusb_dev)
+{
+ struct usb_device *usb_dev = wusb_dev->usb_dev;
+ if (usb_dev)
+ sysfs_remove_group(&usb_dev->dev.kobj, &wusb_dev_attr_group);
+}
--- /dev/null
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * Device Connect handling
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: this file needs to be broken up, it's grown too big
+ *
+ *
+ * WUSB1.0[7.1, 7.5.1, ]
+ *
+ * WUSB device connection is kind of messy. Some background:
+ *
+ * When a device wants to connect it scans the UWB radio channels
+ * looking for a WUSB Channel; a WUSB channel is defined by MMCs
+ * (Micro Managed Commands or something like that) [see
+ * Design-overview for more on this] .
+ *
+ * So, device scans the radio, finds MMCs and thus a host and checks
+ * when the next DNTS is. It sends a Device Notification Connect
+ * (DN_Connect); the host picks it up (through nep.c and notif.c, ends
+ * up in wusb_devconnect_ack(), which creates a wusb_dev structure in
+ * wusbhc->port[port_number].wusb_dev), assigns an unauth address
+ * to the device (this means from 0x80 to 0xfe) and sends, in the MMC
+ * a Connect Ack Information Element (ConnAck IE).
+ *
+ * So now the device now has a WUSB address. From now on, we use
+ * that to talk to it in the RPipes.
+ *
+ * ASSUMPTIONS:
+ *
+ * - We use the the as device address the port number where it is
+ * connected (port 0 doesn't exist). For unauth, it is 128 + that.
+ *
+ * ROADMAP:
+ *
+ * This file contains the logic for doing that--entry points:
+ *
+ * wusb_devconnect_ack() Ack a device until _acked() called.
+ * Called by notif.c:wusb_handle_dn_connect()
+ * when a DN_Connect is received.
+ *
+ * wusbhc_devconnect_auth() Called by rh.c:wusbhc_rh_port_reset() when
+ * doing the device connect sequence.
+ *
+ * wusb_devconnect_acked() Ack done, release resources.
+ *
+ * wusb_handle_dn_alive() Called by notif.c:wusb_handle_dn()
+ * for processing a DN_Alive pong from a device.
+ *
+ * wusb_handle_dn_disconnect()Called by notif.c:wusb_handle_dn() to
+ * process a disconenct request from a
+ * device.
+ *
+ * wusb_dev_reset() Called by rh.c:wusbhc_rh_port_reset() when
+ * resetting a device.
+ *
+ * __wusb_dev_disable() Called by rh.c:wusbhc_rh_clear_port_feat() when
+ * disabling a port.
+ *
+ * wusb_devconnect_create() Called when creating the host by
+ * lc.c:wusbhc_create().
+ *
+ * wusb_devconnect_destroy() Cleanup called removing the host. Called
+ * by lc.c:wusbhc_destroy().
+ *
+ * Each Wireless USB host maintains a list of DN_Connect requests
+ * (actually we maintain a list of pending Connect Acks, the
+ * wusbhc->ca_list).
+ *
+ * LIFE CYCLE OF port->wusb_dev
+ *
+ * Before the @wusbhc structure put()s the reference it owns for
+ * port->wusb_dev [and clean the wusb_dev pointer], it needs to
+ * lock @wusbhc->mutex.
+ */
+
+#include <linux/jiffies.h>
+#include <linux/ctype.h>
+#include <linux/workqueue.h>
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+static void wusbhc_devconnect_acked_work(struct work_struct *work);
+
+static void wusb_dev_free(struct wusb_dev *wusb_dev)
+{
+ if (wusb_dev) {
+ kfree(wusb_dev->set_gtk_req);
+ usb_free_urb(wusb_dev->set_gtk_urb);
+ kfree(wusb_dev);
+ }
+}
+
+static struct wusb_dev *wusb_dev_alloc(struct wusbhc *wusbhc)
+{
+ struct wusb_dev *wusb_dev;
+ struct urb *urb;
+ struct usb_ctrlrequest *req;
+
+ wusb_dev = kzalloc(sizeof(*wusb_dev), GFP_KERNEL);
+ if (wusb_dev == NULL)
+ goto err;
+
+ wusb_dev->wusbhc = wusbhc;
+
+ INIT_WORK(&wusb_dev->devconnect_acked_work, wusbhc_devconnect_acked_work);
+
+ urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (urb == NULL)
+ goto err;
+
+ req = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
+ if (req == NULL)
+ goto err;
+
+ req->bRequestType = USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE;
+ req->bRequest = USB_REQ_SET_DESCRIPTOR;
+ req->wValue = cpu_to_le16(USB_DT_KEY << 8 | wusbhc->gtk_index);
+ req->wIndex = 0;
+ req->wLength = cpu_to_le16(wusbhc->gtk.descr.bLength);
+
+ wusb_dev->set_gtk_urb = urb;
+ wusb_dev->set_gtk_req = req;
+
+ return wusb_dev;
+err:
+ wusb_dev_free(wusb_dev);
+ return NULL;
+}
+
+
+/*
+ * Using the Connect-Ack list, fill out the @wusbhc Connect-Ack WUSB IE
+ * properly so that it can be added to the MMC.
+ *
+ * We just get the @wusbhc->ca_list and fill out the first four ones or
+ * less (per-spec WUSB1.0[7.5, before T7-38). If the ConnectAck WUSB
+ * IE is not allocated, we alloc it.
+ *
+ * @wusbhc->mutex must be taken
+ */
+static void wusbhc_fill_cack_ie(struct wusbhc *wusbhc)
+{
+ unsigned cnt;
+ struct wusb_dev *dev_itr;
+ struct wuie_connect_ack *cack_ie;
+
+ cack_ie = &wusbhc->cack_ie;
+ cnt = 0;
+ list_for_each_entry(dev_itr, &wusbhc->cack_list, cack_node) {
+ cack_ie->blk[cnt].CDID = dev_itr->cdid;
+ cack_ie->blk[cnt].bDeviceAddress = dev_itr->addr;
+ if (++cnt >= WUIE_ELT_MAX)
+ break;
+ }
+ cack_ie->hdr.bLength = sizeof(cack_ie->hdr)
+ + cnt * sizeof(cack_ie->blk[0]);
+}
+
+/*
+ * Register a new device that wants to connect
+ *
+ * A new device wants to connect, so we add it to the Connect-Ack
+ * list. We give it an address in the unauthorized range (bit 8 set);
+ * user space will have to drive authorization further on.
+ *
+ * @dev_addr: address to use for the device (which is also the port
+ * number).
+ *
+ * @wusbhc->mutex must be taken
+ */
+static struct wusb_dev *wusbhc_cack_add(struct wusbhc *wusbhc,
+ struct wusb_dn_connect *dnc,
+ const char *pr_cdid, u8 port_idx)
+{
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev;
+ int new_connection = wusb_dn_connect_new_connection(dnc);
+ u8 dev_addr;
+ int result;
+
+ /* Is it registered already? */
+ list_for_each_entry(wusb_dev, &wusbhc->cack_list, cack_node)
+ if (!memcmp(&wusb_dev->cdid, &dnc->CDID,
+ sizeof(wusb_dev->cdid)))
+ return wusb_dev;
+ /* We don't have it, create an entry, register it */
+ wusb_dev = wusb_dev_alloc(wusbhc);
+ if (wusb_dev == NULL)
+ return NULL;
+ wusb_dev_init(wusb_dev);
+ wusb_dev->cdid = dnc->CDID;
+ wusb_dev->port_idx = port_idx;
+
+ /*
+ * Devices are always available within the cluster reservation
+ * and since the hardware will take the intersection of the
+ * per-device availability and the cluster reservation, the
+ * per-device availability can simply be set to always
+ * available.
+ */
+ bitmap_fill(wusb_dev->availability.bm, UWB_NUM_MAS);
+
+ /* FIXME: handle reconnects instead of assuming connects are
+ always new. */
+ if (1 && new_connection == 0)
+ new_connection = 1;
+ if (new_connection) {
+ dev_addr = (port_idx + 2) | WUSB_DEV_ADDR_UNAUTH;
+
+ dev_info(dev, "Connecting new WUSB device to address %u, "
+ "port %u\n", dev_addr, port_idx);
+
+ result = wusb_set_dev_addr(wusbhc, wusb_dev, dev_addr);
+ if (result < 0)
+ return NULL;
+ }
+ wusb_dev->entry_ts = jiffies;
+ list_add_tail(&wusb_dev->cack_node, &wusbhc->cack_list);
+ wusbhc->cack_count++;
+ wusbhc_fill_cack_ie(wusbhc);
+ return wusb_dev;
+}
+
+/*
+ * Remove a Connect-Ack context entry from the HCs view
+ *
+ * @wusbhc->mutex must be taken
+ */
+static void wusbhc_cack_rm(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct device *dev = wusbhc->dev;
+ d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
+ list_del_init(&wusb_dev->cack_node);
+ wusbhc->cack_count--;
+ wusbhc_fill_cack_ie(wusbhc);
+ d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
+}
+
+/*
+ * @wusbhc->mutex must be taken */
+static
+void wusbhc_devconnect_acked(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct device *dev = wusbhc->dev;
+ d_fnstart(3, dev, "(wusbhc %p wusb_dev %p)\n", wusbhc, wusb_dev);
+ wusbhc_cack_rm(wusbhc, wusb_dev);
+ if (wusbhc->cack_count)
+ wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
+ else
+ wusbhc_mmcie_rm(wusbhc, &wusbhc->cack_ie.hdr);
+ d_fnend(3, dev, "(wusbhc %p wusb_dev %p) = void\n", wusbhc, wusb_dev);
+}
+
+static void wusbhc_devconnect_acked_work(struct work_struct *work)
+{
+ struct wusb_dev *wusb_dev = container_of(work, struct wusb_dev,
+ devconnect_acked_work);
+ struct wusbhc *wusbhc = wusb_dev->wusbhc;
+
+ mutex_lock(&wusbhc->mutex);
+ wusbhc_devconnect_acked(wusbhc, wusb_dev);
+ mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Ack a device for connection
+ *
+ * FIXME: docs
+ *
+ * @pr_cdid: Printable CDID...hex Use @dnc->cdid for the real deal.
+ *
+ * So we get the connect ack IE (may have been allocated already),
+ * find an empty connect block, an empty virtual port, create an
+ * address with it (see below), make it an unauth addr [bit 7 set] and
+ * set the MMC.
+ *
+ * Addresses: because WUSB hosts have no downstream hubs, we can do a
+ * 1:1 mapping between 'port number' and device
+ * address. This simplifies many things, as during this
+ * initial connect phase the USB stack has no knoledge of
+ * the device and hasn't assigned an address yet--we know
+ * USB's choose_address() will use the same euristics we
+ * use here, so we can assume which address will be assigned.
+ *
+ * USB stack always assigns address 1 to the root hub, so
+ * to the port number we add 2 (thus virtual port #0 is
+ * addr #2).
+ *
+ * @wusbhc shall be referenced
+ */
+static
+void wusbhc_devconnect_ack(struct wusbhc *wusbhc, struct wusb_dn_connect *dnc,
+ const char *pr_cdid)
+{
+ int result;
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev;
+ struct wusb_port *port;
+ unsigned idx, devnum;
+
+ d_fnstart(3, dev, "(%p, %p, %s)\n", wusbhc, dnc, pr_cdid);
+ mutex_lock(&wusbhc->mutex);
+
+ /* Check we are not handling it already */
+ for (idx = 0; idx < wusbhc->ports_max; idx++) {
+ port = wusb_port_by_idx(wusbhc, idx);
+ if (port->wusb_dev
+ && memcmp(&dnc->CDID, &port->wusb_dev->cdid, sizeof(dnc->CDID)) == 0)
+ goto error_unlock;
+ }
+ /* Look up those fake ports we have for a free one */
+ for (idx = 0; idx < wusbhc->ports_max; idx++) {
+ port = wusb_port_by_idx(wusbhc, idx);
+ if ((port->status & USB_PORT_STAT_POWER)
+ && !(port->status & USB_PORT_STAT_CONNECTION))
+ break;
+ }
+ if (idx >= wusbhc->ports_max) {
+ dev_err(dev, "Host controller can't connect more devices "
+ "(%u already connected); device %s rejected\n",
+ wusbhc->ports_max, pr_cdid);
+ /* NOTE: we could send a WUIE_Disconnect here, but we haven't
+ * event acked, so the device will eventually timeout the
+ * connection, right? */
+ goto error_unlock;
+ }
+
+ devnum = idx + 2;
+
+ /* Make sure we are using no crypto on that "virtual port" */
+ wusbhc->set_ptk(wusbhc, idx, 0, NULL, 0);
+
+ /* Grab a filled in Connect-Ack context, fill out the
+ * Connect-Ack Wireless USB IE, set the MMC */
+ wusb_dev = wusbhc_cack_add(wusbhc, dnc, pr_cdid, idx);
+ if (wusb_dev == NULL)
+ goto error_unlock;
+ result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->cack_ie.hdr);
+ if (result < 0)
+ goto error_unlock;
+ /* Give the device at least 2ms (WUSB1.0[7.5.1p3]), let's do
+ * three for a good measure */
+ msleep(3);
+ port->wusb_dev = wusb_dev;
+ port->status |= USB_PORT_STAT_CONNECTION;
+ port->change |= USB_PORT_STAT_C_CONNECTION;
+ port->reset_count = 0;
+ /* Now the port status changed to connected; khubd will
+ * pick the change up and try to reset the port to bring it to
+ * the enabled state--so this process returns up to the stack
+ * and it calls back into wusbhc_rh_port_reset() who will call
+ * devconnect_auth().
+ */
+error_unlock:
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(3, dev, "(%p, %p, %s) = void\n", wusbhc, dnc, pr_cdid);
+ return;
+
+}
+
+/*
+ * Disconnect a Wireless USB device from its fake port
+ *
+ * Marks the port as disconnected so that khubd can pick up the change
+ * and drops our knowledge about the device.
+ *
+ * Assumes there is a device connected
+ *
+ * @port_index: zero based port number
+ *
+ * NOTE: @wusbhc->mutex is locked
+ *
+ * WARNING: From here it is not very safe to access anything hanging off
+ * wusb_dev
+ */
+static void __wusbhc_dev_disconnect(struct wusbhc *wusbhc,
+ struct wusb_port *port)
+{
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev = port->wusb_dev;
+
+ d_fnstart(3, dev, "(wusbhc %p, port %p)\n", wusbhc, port);
+ port->status &= ~(USB_PORT_STAT_CONNECTION | USB_PORT_STAT_ENABLE
+ | USB_PORT_STAT_SUSPEND | USB_PORT_STAT_RESET
+ | USB_PORT_STAT_LOW_SPEED | USB_PORT_STAT_HIGH_SPEED);
+ port->change |= USB_PORT_STAT_C_CONNECTION | USB_PORT_STAT_C_ENABLE;
+ if (wusb_dev) {
+ if (!list_empty(&wusb_dev->cack_node))
+ list_del_init(&wusb_dev->cack_node);
+ /* For the one in cack_add() */
+ wusb_dev_put(wusb_dev);
+ }
+ port->wusb_dev = NULL;
+ /* don't reset the reset_count to zero or wusbhc_rh_port_reset will get
+ * confused! We only reset to zero when we connect a new device.
+ */
+
+ /* After a device disconnects, change the GTK (see [WUSB]
+ * section 6.2.11.2). */
+ wusbhc_gtk_rekey(wusbhc);
+
+ d_fnend(3, dev, "(wusbhc %p, port %p) = void\n", wusbhc, port);
+ /* The Wireless USB part has forgotten about the device already; now
+ * khubd's timer will pick up the disconnection and remove the USB
+ * device from the system
+ */
+}
+
+/*
+ * Authenticate a device into the WUSB Cluster
+ *
+ * Called from the Root Hub code (rh.c:wusbhc_rh_port_reset()) when
+ * asking for a reset on a port that is not enabled (ie: first connect
+ * on the port).
+ *
+ * Performs the 4way handshake to allow the device to comunicate w/ the
+ * WUSB Cluster securely; once done, issue a request to the device for
+ * it to change to address 0.
+ *
+ * This mimics the reset step of Wired USB that once resetting a
+ * device, leaves the port in enabled state and the dev with the
+ * default address (0).
+ *
+ * WUSB1.0[7.1.2]
+ *
+ * @port_idx: port where the change happened--This is the index into
+ * the wusbhc port array, not the USB port number.
+ */
+int wusbhc_devconnect_auth(struct wusbhc *wusbhc, u8 port_idx)
+{
+ struct device *dev = wusbhc->dev;
+ struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
+
+ d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+ port->status &= ~USB_PORT_STAT_RESET;
+ port->status |= USB_PORT_STAT_ENABLE;
+ port->change |= USB_PORT_STAT_C_RESET | USB_PORT_STAT_C_ENABLE;
+ d_fnend(3, dev, "(%p, %u) = 0\n", wusbhc, port_idx);
+ return 0;
+}
+
+/*
+ * Refresh the list of keep alives to emit in the MMC
+ *
+ * Some devices don't respond to keep alives unless they've been
+ * authenticated, so skip unauthenticated devices.
+ *
+ * We only publish the first four devices that have a coming timeout
+ * condition. Then when we are done processing those, we go for the
+ * next ones. We ignore the ones that have timed out already (they'll
+ * be purged).
+ *
+ * This might cause the first devices to timeout the last devices in
+ * the port array...FIXME: come up with a better algorithm?
+ *
+ * Note we can't do much about MMC's ops errors; we hope next refresh
+ * will kind of handle it.
+ *
+ * NOTE: @wusbhc->mutex is locked
+ */
+static void __wusbhc_keep_alive(struct wusbhc *wusbhc)
+{
+ struct device *dev = wusbhc->dev;
+ unsigned cnt;
+ struct wusb_dev *wusb_dev;
+ struct wusb_port *wusb_port;
+ struct wuie_keep_alive *ie = &wusbhc->keep_alive_ie;
+ unsigned keep_alives, old_keep_alives;
+
+ old_keep_alives = ie->hdr.bLength - sizeof(ie->hdr);
+ keep_alives = 0;
+ for (cnt = 0;
+ keep_alives <= WUIE_ELT_MAX && cnt < wusbhc->ports_max;
+ cnt++) {
+ unsigned tt = msecs_to_jiffies(wusbhc->trust_timeout);
+
+ wusb_port = wusb_port_by_idx(wusbhc, cnt);
+ wusb_dev = wusb_port->wusb_dev;
+
+ if (wusb_dev == NULL)
+ continue;
+ if (wusb_dev->usb_dev == NULL || !wusb_dev->usb_dev->authenticated)
+ continue;
+
+ if (time_after(jiffies, wusb_dev->entry_ts + tt)) {
+ dev_err(dev, "KEEPALIVE: device %u timed out\n",
+ wusb_dev->addr);
+ __wusbhc_dev_disconnect(wusbhc, wusb_port);
+ } else if (time_after(jiffies, wusb_dev->entry_ts + tt/2)) {
+ /* Approaching timeout cut out, need to refresh */
+ ie->bDeviceAddress[keep_alives++] = wusb_dev->addr;
+ }
+ }
+ if (keep_alives & 0x1) /* pad to even number ([WUSB] section 7.5.9) */
+ ie->bDeviceAddress[keep_alives++] = 0x7f;
+ ie->hdr.bLength = sizeof(ie->hdr) +
+ keep_alives*sizeof(ie->bDeviceAddress[0]);
+ if (keep_alives > 0)
+ wusbhc_mmcie_set(wusbhc, 10, 5, &ie->hdr);
+ else if (old_keep_alives != 0)
+ wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+}
+
+/*
+ * Do a run through all devices checking for timeouts
+ */
+static void wusbhc_keep_alive_run(struct work_struct *ws)
+{
+ struct delayed_work *dw =
+ container_of(ws, struct delayed_work, work);
+ struct wusbhc *wusbhc =
+ container_of(dw, struct wusbhc, keep_alive_timer);
+
+ d_fnstart(5, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+ if (wusbhc->active) {
+ mutex_lock(&wusbhc->mutex);
+ __wusbhc_keep_alive(wusbhc);
+ mutex_unlock(&wusbhc->mutex);
+ queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+ (wusbhc->trust_timeout * CONFIG_HZ)/1000/2);
+ }
+ d_fnend(5, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+ return;
+}
+
+/*
+ * Find the wusb_dev from its device address.
+ *
+ * The device can be found directly from the address (see
+ * wusb_cack_add() for where the device address is set to port_idx
+ * +2), except when the address is zero.
+ */
+static struct wusb_dev *wusbhc_find_dev_by_addr(struct wusbhc *wusbhc, u8 addr)
+{
+ int p;
+
+ if (addr == 0xff) /* unconnected */
+ return NULL;
+
+ if (addr > 0) {
+ int port = (addr & ~0x80) - 2;
+ if (port < 0 || port >= wusbhc->ports_max)
+ return NULL;
+ return wusb_port_by_idx(wusbhc, port)->wusb_dev;
+ }
+
+ /* Look for the device with address 0. */
+ for (p = 0; p < wusbhc->ports_max; p++) {
+ struct wusb_dev *wusb_dev = wusb_port_by_idx(wusbhc, p)->wusb_dev;
+ if (wusb_dev && wusb_dev->addr == addr)
+ return wusb_dev;
+ }
+ return NULL;
+}
+
+/*
+ * Handle a DN_Alive notification (WUSB1.0[7.6.1])
+ *
+ * This just updates the device activity timestamp and then refreshes
+ * the keep alive IE.
+ *
+ * @wusbhc shall be referenced and unlocked
+ */
+static void wusbhc_handle_dn_alive(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct device *dev = wusbhc->dev;
+
+ d_printf(2, dev, "DN ALIVE: device 0x%02x pong\n", wusb_dev->addr);
+
+ mutex_lock(&wusbhc->mutex);
+ wusb_dev->entry_ts = jiffies;
+ __wusbhc_keep_alive(wusbhc);
+ mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Handle a DN_Connect notification (WUSB1.0[7.6.1])
+ *
+ * @wusbhc
+ * @pkt_hdr
+ * @size: Size of the buffer where the notification resides; if the
+ * notification data suggests there should be more data than
+ * available, an error will be signaled and the whole buffer
+ * consumed.
+ *
+ * @wusbhc->mutex shall be held
+ */
+static void wusbhc_handle_dn_connect(struct wusbhc *wusbhc,
+ struct wusb_dn_hdr *dn_hdr,
+ size_t size)
+{
+ struct device *dev = wusbhc->dev;
+ struct wusb_dn_connect *dnc;
+ char pr_cdid[WUSB_CKHDID_STRSIZE];
+ static const char *beacon_behaviour[] = {
+ "reserved",
+ "self-beacon",
+ "directed-beacon",
+ "no-beacon"
+ };
+
+ d_fnstart(3, dev, "(%p, %p, %zu)\n", wusbhc, dn_hdr, size);
+ if (size < sizeof(*dnc)) {
+ dev_err(dev, "DN CONNECT: short notification (%zu < %zu)\n",
+ size, sizeof(*dnc));
+ goto out;
+ }
+
+ dnc = container_of(dn_hdr, struct wusb_dn_connect, hdr);
+ ckhdid_printf(pr_cdid, sizeof(pr_cdid), &dnc->CDID);
+ dev_info(dev, "DN CONNECT: device %s @ %x (%s) wants to %s\n",
+ pr_cdid,
+ wusb_dn_connect_prev_dev_addr(dnc),
+ beacon_behaviour[wusb_dn_connect_beacon_behavior(dnc)],
+ wusb_dn_connect_new_connection(dnc) ? "connect" : "reconnect");
+ /* ACK the connect */
+ wusbhc_devconnect_ack(wusbhc, dnc, pr_cdid);
+out:
+ d_fnend(3, dev, "(%p, %p, %zu) = void\n",
+ wusbhc, dn_hdr, size);
+ return;
+}
+
+/*
+ * Handle a DN_Disconnect notification (WUSB1.0[7.6.1])
+ *
+ * Device is going down -- do the disconnect.
+ *
+ * @wusbhc shall be referenced and unlocked
+ */
+static void wusbhc_handle_dn_disconnect(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct device *dev = wusbhc->dev;
+
+ dev_info(dev, "DN DISCONNECT: device 0x%02x going down\n", wusb_dev->addr);
+
+ mutex_lock(&wusbhc->mutex);
+ __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, wusb_dev->port_idx));
+ mutex_unlock(&wusbhc->mutex);
+}
+
+/*
+ * Reset a WUSB device on a HWA
+ *
+ * @wusbhc
+ * @port_idx Index of the port where the device is
+ *
+ * In Wireless USB, a reset is more or less equivalent to a full
+ * disconnect; so we just do a full disconnect and send the device a
+ * Device Reset IE (WUSB1.0[7.5.11]) giving it a few millisecs (6 MMCs).
+ *
+ * @wusbhc should be refcounted and unlocked
+ */
+int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port_idx)
+{
+ int result;
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev;
+ struct wuie_reset *ie;
+
+ d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+ mutex_lock(&wusbhc->mutex);
+ result = 0;
+ wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+ if (wusb_dev == NULL) {
+ /* reset no device? ignore */
+ dev_dbg(dev, "RESET: no device at port %u, ignoring\n",
+ port_idx);
+ goto error_unlock;
+ }
+ result = -ENOMEM;
+ ie = kzalloc(sizeof(*ie), GFP_KERNEL);
+ if (ie == NULL)
+ goto error_unlock;
+ ie->hdr.bLength = sizeof(ie->hdr) + sizeof(ie->CDID);
+ ie->hdr.bIEIdentifier = WUIE_ID_RESET_DEVICE;
+ ie->CDID = wusb_dev->cdid;
+ result = wusbhc_mmcie_set(wusbhc, 0xff, 6, &ie->hdr);
+ if (result < 0) {
+ dev_err(dev, "RESET: cant's set MMC: %d\n", result);
+ goto error_kfree;
+ }
+ __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+
+ /* 120ms, hopefully 6 MMCs (FIXME) */
+ msleep(120);
+ wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+error_kfree:
+ kfree(ie);
+error_unlock:
+ mutex_unlock(&wusbhc->mutex);
+ d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
+ return result;
+}
+
+/*
+ * Handle a Device Notification coming a host
+ *
+ * The Device Notification comes from a host (HWA, DWA or WHCI)
+ * wrapped in a set of headers. Somebody else has peeled off those
+ * headers for us and we just get one Device Notifications.
+ *
+ * Invalid DNs (e.g., too short) are discarded.
+ *
+ * @wusbhc shall be referenced
+ *
+ * FIXMES:
+ * - implement priorities as in WUSB1.0[Table 7-55]?
+ */
+void wusbhc_handle_dn(struct wusbhc *wusbhc, u8 srcaddr,
+ struct wusb_dn_hdr *dn_hdr, size_t size)
+{
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev;
+
+ d_fnstart(3, dev, "(%p, %p)\n", wusbhc, dn_hdr);
+
+ if (size < sizeof(struct wusb_dn_hdr)) {
+ dev_err(dev, "DN data shorter than DN header (%d < %d)\n",
+ (int)size, (int)sizeof(struct wusb_dn_hdr));
+ goto out;
+ }
+
+ wusb_dev = wusbhc_find_dev_by_addr(wusbhc, srcaddr);
+ if (wusb_dev == NULL && dn_hdr->bType != WUSB_DN_CONNECT) {
+ dev_dbg(dev, "ignoring DN %d from unconnected device %02x\n",
+ dn_hdr->bType, srcaddr);
+ goto out;
+ }
+
+ switch (dn_hdr->bType) {
+ case WUSB_DN_CONNECT:
+ wusbhc_handle_dn_connect(wusbhc, dn_hdr, size);
+ break;
+ case WUSB_DN_ALIVE:
+ wusbhc_handle_dn_alive(wusbhc, wusb_dev);
+ break;
+ case WUSB_DN_DISCONNECT:
+ wusbhc_handle_dn_disconnect(wusbhc, wusb_dev);
+ break;
+ case WUSB_DN_MASAVAILCHANGED:
+ case WUSB_DN_RWAKE:
+ case WUSB_DN_SLEEP:
+ /* FIXME: handle these DNs. */
+ break;
+ case WUSB_DN_EPRDY:
+ /* The hardware handles these. */
+ break;
+ default:
+ dev_warn(dev, "unknown DN %u (%d octets) from %u\n",
+ dn_hdr->bType, (int)size, srcaddr);
+ }
+out:
+ d_fnend(3, dev, "(%p, %p) = void\n", wusbhc, dn_hdr);
+ return;
+}
+EXPORT_SYMBOL_GPL(wusbhc_handle_dn);
+
+/*
+ * Disconnect a WUSB device from a the cluster
+ *
+ * @wusbhc
+ * @port Fake port where the device is (wusbhc index, not USB port number).
+ *
+ * In Wireless USB, a disconnect is basically telling the device he is
+ * being disconnected and forgetting about him.
+ *
+ * We send the device a Device Disconnect IE (WUSB1.0[7.5.11]) for 100
+ * ms and then keep going.
+ *
+ * We don't do much in case of error; we always pretend we disabled
+ * the port and disconnected the device. If physically the request
+ * didn't get there (many things can fail in the way there), the stack
+ * will reject the device's communication attempts.
+ *
+ * @wusbhc should be refcounted and locked
+ */
+void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port_idx)
+{
+ int result;
+ struct device *dev = wusbhc->dev;
+ struct wusb_dev *wusb_dev;
+ struct wuie_disconnect *ie;
+
+ d_fnstart(3, dev, "(%p, %u)\n", wusbhc, port_idx);
+ result = 0;
+ wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+ if (wusb_dev == NULL) {
+ /* reset no device? ignore */
+ dev_dbg(dev, "DISCONNECT: no device at port %u, ignoring\n",
+ port_idx);
+ goto error;
+ }
+ __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+
+ result = -ENOMEM;
+ ie = kzalloc(sizeof(*ie), GFP_KERNEL);
+ if (ie == NULL)
+ goto error;
+ ie->hdr.bLength = sizeof(*ie);
+ ie->hdr.bIEIdentifier = WUIE_ID_DEVICE_DISCONNECT;
+ ie->bDeviceAddress = wusb_dev->addr;
+ result = wusbhc_mmcie_set(wusbhc, 0, 0, &ie->hdr);
+ if (result < 0) {
+ dev_err(dev, "DISCONNECT: can't set MMC: %d\n", result);
+ goto error_kfree;
+ }
+
+ /* 120ms, hopefully 6 MMCs */
+ msleep(100);
+ wusbhc_mmcie_rm(wusbhc, &ie->hdr);
+error_kfree:
+ kfree(ie);
+error:
+ d_fnend(3, dev, "(%p, %u) = %d\n", wusbhc, port_idx, result);
+ return;
+}
+
+static void wusb_cap_descr_printf(const unsigned level, struct device *dev,
+ const struct usb_wireless_cap_descriptor *wcd)
+{
+ d_printf(level, dev,
+ "WUSB Capability Descriptor\n"
+ " bDevCapabilityType 0x%02x\n"
+ " bmAttributes 0x%02x\n"
+ " wPhyRates 0x%04x\n"
+ " bmTFITXPowerInfo 0x%02x\n"
+ " bmFFITXPowerInfo 0x%02x\n"
+ " bmBandGroup 0x%04x\n"
+ " bReserved 0x%02x\n",
+ wcd->bDevCapabilityType,
+ wcd->bmAttributes,
+ le16_to_cpu(wcd->wPHYRates),
+ wcd->bmTFITXPowerInfo,
+ wcd->bmFFITXPowerInfo,
+ wcd->bmBandGroup,
+ wcd->bReserved);
+}
+
+/*
+ * Walk over the BOS descriptor, verify and grok it
+ *
+ * @usb_dev: referenced
+ * @wusb_dev: referenced and unlocked
+ *
+ * The BOS descriptor is defined at WUSB1.0[7.4.1], and it defines a
+ * "flexible" way to wrap all kinds of descriptors inside an standard
+ * descriptor (wonder why they didn't use normal descriptors,
+ * btw). Not like they lack code.
+ *
+ * At the end we go to look for the WUSB Device Capabilities
+ * (WUSB1.0[7.4.1.1]) that is wrapped in a device capability descriptor
+ * that is part of the BOS descriptor set. That tells us what does the
+ * device support (dual role, beacon type, UWB PHY rates).
+ */
+static int wusb_dev_bos_grok(struct usb_device *usb_dev,
+ struct wusb_dev *wusb_dev,
+ struct usb_bos_descriptor *bos, size_t desc_size)
+{
+ ssize_t result;
+ struct device *dev = &usb_dev->dev;
+ void *itr, *top;
+
+ /* Walk over BOS capabilities, verify them */
+ itr = (void *)bos + sizeof(*bos);
+ top = itr + desc_size - sizeof(*bos);
+ while (itr < top) {
+ struct usb_dev_cap_header *cap_hdr = itr;
+ size_t cap_size;
+ u8 cap_type;
+ if (top - itr < sizeof(*cap_hdr)) {
+ dev_err(dev, "Device BUG? premature end of BOS header "
+ "data [offset 0x%02x]: only %zu bytes left\n",
+ (int)(itr - (void *)bos), top - itr);
+ result = -ENOSPC;
+ goto error_bad_cap;
+ }
+ cap_size = cap_hdr->bLength;
+ cap_type = cap_hdr->bDevCapabilityType;
+ d_printf(4, dev, "BOS Capability: 0x%02x (%zu bytes)\n",
+ cap_type, cap_size);
+ if (cap_size == 0)
+ break;
+ if (cap_size > top - itr) {
+ dev_err(dev, "Device BUG? premature end of BOS data "
+ "[offset 0x%02x cap %02x %zu bytes]: "
+ "only %zu bytes left\n",
+ (int)(itr - (void *)bos),
+ cap_type, cap_size, top - itr);
+ result = -EBADF;
+ goto error_bad_cap;
+ }
+ d_dump(3, dev, itr, cap_size);
+ switch (cap_type) {
+ case USB_CAP_TYPE_WIRELESS_USB:
+ if (cap_size != sizeof(*wusb_dev->wusb_cap_descr))
+ dev_err(dev, "Device BUG? WUSB Capability "
+ "descriptor is %zu bytes vs %zu "
+ "needed\n", cap_size,
+ sizeof(*wusb_dev->wusb_cap_descr));
+ else {
+ wusb_dev->wusb_cap_descr = itr;
+ wusb_cap_descr_printf(3, dev, itr);
+ }
+ break;
+ default:
+ dev_err(dev, "BUG? Unknown BOS capability 0x%02x "
+ "(%zu bytes) at offset 0x%02x\n", cap_type,
+ cap_size, (int)(itr - (void *)bos));
+ }
+ itr += cap_size;
+ }
+ result = 0;
+error_bad_cap:
+ return result;
+}
+
+/*
+ * Add information from the BOS descriptors to the device
+ *
+ * @usb_dev: referenced
+ * @wusb_dev: referenced and unlocked
+ *
+ * So what we do is we alloc a space for the BOS descriptor of 64
+ * bytes; read the first four bytes which include the wTotalLength
+ * field (WUSB1.0[T7-26]) and if it fits in those 64 bytes, read the
+ * whole thing. If not we realloc to that size.
+ *
+ * Then we call the groking function, that will fill up
+ * wusb_dev->wusb_cap_descr, which is what we'll need later on.
+ */
+static int wusb_dev_bos_add(struct usb_device *usb_dev,
+ struct wusb_dev *wusb_dev)
+{
+ ssize_t result;
+ struct device *dev = &usb_dev->dev;
+ struct usb_bos_descriptor *bos;
+ size_t alloc_size = 32, desc_size = 4;
+
+ bos = kmalloc(alloc_size, GFP_KERNEL);
+ if (bos == NULL)
+ return -ENOMEM;
+ result = usb_get_descriptor(usb_dev, USB_DT_BOS, 0, bos, desc_size);
+ if (result < 4) {
+ dev_err(dev, "Can't get BOS descriptor or too short: %zd\n",
+ result);
+ goto error_get_descriptor;
+ }
+ desc_size = le16_to_cpu(bos->wTotalLength);
+ if (desc_size >= alloc_size) {
+ kfree(bos);
+ alloc_size = desc_size;
+ bos = kmalloc(alloc_size, GFP_KERNEL);
+ if (bos == NULL)
+ return -ENOMEM;
+ }
+ result = usb_get_descriptor(usb_dev, USB_DT_BOS, 0, bos, desc_size);
+ if (result < 0 || result != desc_size) {
+ dev_err(dev, "Can't get BOS descriptor or too short (need "
+ "%zu bytes): %zd\n", desc_size, result);
+ goto error_get_descriptor;
+ }
+ if (result < sizeof(*bos)
+ || le16_to_cpu(bos->wTotalLength) != desc_size) {
+ dev_err(dev, "Can't get BOS descriptor or too short (need "
+ "%zu bytes): %zd\n", desc_size, result);
+ goto error_get_descriptor;
+ }
+ d_printf(2, dev, "Got BOS descriptor %zd bytes, %u capabilities\n",
+ result, bos->bNumDeviceCaps);
+ d_dump(2, dev, bos, result);
+ result = wusb_dev_bos_grok(usb_dev, wusb_dev, bos, result);
+ if (result < 0)
+ goto error_bad_bos;
+ wusb_dev->bos = bos;
+ return 0;
+
+error_bad_bos:
+error_get_descriptor:
+ kfree(bos);
+ wusb_dev->wusb_cap_descr = NULL;
+ return result;
+}
+
+static void wusb_dev_bos_rm(struct wusb_dev *wusb_dev)
+{
+ kfree(wusb_dev->bos);
+ wusb_dev->wusb_cap_descr = NULL;
+};
+
+static struct usb_wireless_cap_descriptor wusb_cap_descr_default = {
+ .bLength = sizeof(wusb_cap_descr_default),
+ .bDescriptorType = USB_DT_DEVICE_CAPABILITY,
+ .bDevCapabilityType = USB_CAP_TYPE_WIRELESS_USB,
+
+ .bmAttributes = USB_WIRELESS_BEACON_NONE,
+ .wPHYRates = cpu_to_le16(USB_WIRELESS_PHY_53),
+ .bmTFITXPowerInfo = 0,
+ .bmFFITXPowerInfo = 0,
+ .bmBandGroup = cpu_to_le16(0x0001), /* WUSB1.0[7.4.1] bottom */
+ .bReserved = 0
+};
+
+/*
+ * USB stack's device addition Notifier Callback
+ *
+ * Called from drivers/usb/core/hub.c when a new device is added; we
+ * use this hook to perform certain WUSB specific setup work on the
+ * new device. As well, it is the first time we can connect the
+ * wusb_dev and the usb_dev. So we note it down in wusb_dev and take a
+ * reference that we'll drop.
+ *
+ * First we need to determine if the device is a WUSB device (else we
+ * ignore it). For that we use the speed setting (USB_SPEED_VARIABLE)
+ * [FIXME: maybe we'd need something more definitive]. If so, we track
+ * it's usb_busd and from there, the WUSB HC.
+ *
+ * Because all WUSB HCs are contained in a 'struct wusbhc', voila, we
+ * get the wusbhc for the device.
+ *
+ * We have a reference on @usb_dev (as we are called at the end of its
+ * enumeration).
+ *
+ * NOTE: @usb_dev locked
+ */
+static void wusb_dev_add_ncb(struct usb_device *usb_dev)
+{
+ int result = 0;
+ struct wusb_dev *wusb_dev;
+ struct wusbhc *wusbhc;
+ struct device *dev = &usb_dev->dev;
+ u8 port_idx;
+
+ if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
+ return; /* skip non wusb and wusb RHs */
+
+ d_fnstart(3, dev, "(usb_dev %p)\n", usb_dev);
+
+ wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+ if (wusbhc == NULL)
+ goto error_nodev;
+ mutex_lock(&wusbhc->mutex);
+ wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, usb_dev);
+ port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+ mutex_unlock(&wusbhc->mutex);
+ if (wusb_dev == NULL)
+ goto error_nodev;
+ wusb_dev->usb_dev = usb_get_dev(usb_dev);
+ usb_dev->wusb_dev = wusb_dev_get(wusb_dev);
+ result = wusb_dev_sec_add(wusbhc, usb_dev, wusb_dev);
+ if (result < 0) {
+ dev_err(dev, "Cannot enable security: %d\n", result);
+ goto error_sec_add;
+ }
+ /* Now query the device for it's BOS and attach it to wusb_dev */
+ result = wusb_dev_bos_add(usb_dev, wusb_dev);
+ if (result < 0) {
+ dev_err(dev, "Cannot get BOS descriptors: %d\n", result);
+ goto error_bos_add;
+ }
+ result = wusb_dev_sysfs_add(wusbhc, usb_dev, wusb_dev);
+ if (result < 0)
+ goto error_add_sysfs;
+out:
+ wusb_dev_put(wusb_dev);
+ wusbhc_put(wusbhc);
+error_nodev:
+ d_fnend(3, dev, "(usb_dev %p) = void\n", usb_dev);
+ return;
+
+ wusb_dev_sysfs_rm(wusb_dev);
+error_add_sysfs:
+ wusb_dev_bos_rm(wusb_dev);
+error_bos_add:
+ wusb_dev_sec_rm(wusb_dev);
+error_sec_add:
+ mutex_lock(&wusbhc->mutex);
+ __wusbhc_dev_disconnect(wusbhc, wusb_port_by_idx(wusbhc, port_idx));
+ mutex_unlock(&wusbhc->mutex);
+ goto out;
+}
+
+/*
+ * Undo all the steps done at connection by the notifier callback
+ *
+ * NOTE: @usb_dev locked
+ */
+static void wusb_dev_rm_ncb(struct usb_device *usb_dev)
+{
+ struct wusb_dev *wusb_dev = usb_dev->wusb_dev;
+
+ if (usb_dev->wusb == 0 || usb_dev->devnum == 1)
+ return; /* skip non wusb and wusb RHs */
+
+ wusb_dev_sysfs_rm(wusb_dev);
+ wusb_dev_bos_rm(wusb_dev);
+ wusb_dev_sec_rm(wusb_dev);
+ wusb_dev->usb_dev = NULL;
+ usb_dev->wusb_dev = NULL;
+ wusb_dev_put(wusb_dev);
+ usb_put_dev(usb_dev);
+}
+
+/*
+ * Handle notifications from the USB stack (notifier call back)
+ *
+ * This is called when the USB stack does a
+ * usb_{bus,device}_{add,remove}() so we can do WUSB specific
+ * handling. It is called with [for the case of
+ * USB_DEVICE_{ADD,REMOVE} with the usb_dev locked.
+ */
+int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
+ void *priv)
+{
+ int result = NOTIFY_OK;
+
+ switch (val) {
+ case USB_DEVICE_ADD:
+ wusb_dev_add_ncb(priv);
+ break;
+ case USB_DEVICE_REMOVE:
+ wusb_dev_rm_ncb(priv);
+ break;
+ case USB_BUS_ADD:
+ /* ignore (for now) */
+ case USB_BUS_REMOVE:
+ break;
+ default:
+ WARN_ON(1);
+ result = NOTIFY_BAD;
+ };
+ return result;
+}
+
+/*
+ * Return a referenced wusb_dev given a @wusbhc and @usb_dev
+ */
+struct wusb_dev *__wusb_dev_get_by_usb_dev(struct wusbhc *wusbhc,
+ struct usb_device *usb_dev)
+{
+ struct wusb_dev *wusb_dev;
+ u8 port_idx;
+
+ port_idx = wusb_port_no_to_idx(usb_dev->portnum);
+ BUG_ON(port_idx > wusbhc->ports_max);
+ wusb_dev = wusb_port_by_idx(wusbhc, port_idx)->wusb_dev;
+ if (wusb_dev != NULL) /* ops, device is gone */
+ wusb_dev_get(wusb_dev);
+ return wusb_dev;
+}
+EXPORT_SYMBOL_GPL(__wusb_dev_get_by_usb_dev);
+
+void wusb_dev_destroy(struct kref *_wusb_dev)
+{
+ struct wusb_dev *wusb_dev
+ = container_of(_wusb_dev, struct wusb_dev, refcnt);
+ list_del_init(&wusb_dev->cack_node);
+ wusb_dev_free(wusb_dev);
+ d_fnend(1, NULL, "%s (wusb_dev %p) = void\n", __func__, wusb_dev);
+}
+EXPORT_SYMBOL_GPL(wusb_dev_destroy);
+
+/*
+ * Create all the device connect handling infrastructure
+ *
+ * This is basically the device info array, Connect Acknowledgement
+ * (cack) lists, keep-alive timers (and delayed work thread).
+ */
+int wusbhc_devconnect_create(struct wusbhc *wusbhc)
+{
+ d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+
+ wusbhc->keep_alive_ie.hdr.bIEIdentifier = WUIE_ID_KEEP_ALIVE;
+ wusbhc->keep_alive_ie.hdr.bLength = sizeof(wusbhc->keep_alive_ie.hdr);
+ INIT_DELAYED_WORK(&wusbhc->keep_alive_timer, wusbhc_keep_alive_run);
+
+ wusbhc->cack_ie.hdr.bIEIdentifier = WUIE_ID_CONNECTACK;
+ wusbhc->cack_ie.hdr.bLength = sizeof(wusbhc->cack_ie.hdr);
+ INIT_LIST_HEAD(&wusbhc->cack_list);
+
+ d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+ return 0;
+}
+
+/*
+ * Release all resources taken by the devconnect stuff
+ */
+void wusbhc_devconnect_destroy(struct wusbhc *wusbhc)
+{
+ d_fnstart(3, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+ d_fnend(3, wusbhc->dev, "(wusbhc %p) = void\n", wusbhc);
+}
+
+/*
+ * wusbhc_devconnect_start - start accepting device connections
+ * @wusbhc: the WUSB HC
+ *
+ * Sets the Host Info IE to accept all new connections.
+ *
+ * FIXME: This also enables the keep alives but this is not necessary
+ * until there are connected and authenticated devices.
+ */
+int wusbhc_devconnect_start(struct wusbhc *wusbhc,
+ const struct wusb_ckhdid *chid)
+{
+ struct device *dev = wusbhc->dev;
+ struct wuie_host_info *hi;
+ int result;
+
+ hi = kzalloc(sizeof(*hi), GFP_KERNEL);
+ if (hi == NULL)
+ return -ENOMEM;
+
+ hi->hdr.bLength = sizeof(*hi);
+ hi->hdr.bIEIdentifier = WUIE_ID_HOST_INFO;
+ hi->attributes = cpu_to_le16((wusbhc->rsv->stream << 3) | WUIE_HI_CAP_ALL);
+ hi->CHID = *chid;
+ result = wusbhc_mmcie_set(wusbhc, 0, 0, &hi->hdr);
+ if (result < 0) {
+ dev_err(dev, "Cannot add Host Info MMCIE: %d\n", result);
+ goto error_mmcie_set;
+ }
+ wusbhc->wuie_host_info = hi;
+
+ queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+ (wusbhc->trust_timeout*CONFIG_HZ)/1000/2);
+
+ return 0;
+
+error_mmcie_set:
+ kfree(hi);
+ return result;
+}
+
+/*
+ * wusbhc_devconnect_stop - stop managing connected devices
+ * @wusbhc: the WUSB HC
+ *
+ * Removes the Host Info IE and stops the keep alives.
+ *
+ * FIXME: should this disconnect all devices?
+ */
+void wusbhc_devconnect_stop(struct wusbhc *wusbhc)
+{
+ cancel_delayed_work_sync(&wusbhc->keep_alive_timer);
+ WARN_ON(!list_empty(&wusbhc->cack_list));
+
+ wusbhc_mmcie_rm(wusbhc, &wusbhc->wuie_host_info->hdr);
+ kfree(wusbhc->wuie_host_info);
+ wusbhc->wuie_host_info = NULL;
+}
+
+/*
+ * wusb_set_dev_addr - set the WUSB device address used by the host
+ * @wusbhc: the WUSB HC the device is connect to
+ * @wusb_dev: the WUSB device
+ * @addr: new device address
+ */
+int wusb_set_dev_addr(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev, u8 addr)
+{
+ int result;
+
+ wusb_dev->addr = addr;
+ result = wusbhc->dev_info_set(wusbhc, wusb_dev);
+ if (result < 0)
+ dev_err(wusbhc->dev, "device %d: failed to set device "
+ "address\n", wusb_dev->port_idx);
+ else
+ dev_info(wusbhc->dev, "device %d: %s addr %u\n",
+ wusb_dev->port_idx,
+ (addr & WUSB_DEV_ADDR_UNAUTH) ? "unauth" : "auth",
+ wusb_dev->addr);
+
+ return result;
+}
--- /dev/null
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * MMC (Microscheduled Management Command) handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * WUIEs and MMC IEs...well, they are almost the same at the end. MMC
+ * IEs are Wireless USB IEs that go into the MMC period...[what is
+ * that? look in Design-overview.txt].
+ *
+ *
+ * This is a simple subsystem to keep track of which IEs are being
+ * sent by the host in the MMC period.
+ *
+ * For each WUIE we ask to send, we keep it in an array, so we can
+ * request its removal later, or replace the content. They are tracked
+ * by pointer, so be sure to use the same pointer if you want to
+ * remove it or update the contents.
+ *
+ * FIXME:
+ * - add timers that autoremove intervalled IEs?
+ */
+#include <linux/usb/wusb.h>
+#include "wusbhc.h"
+
+/* Initialize the MMCIEs handling mechanism */
+int wusbhc_mmcie_create(struct wusbhc *wusbhc)
+{
+ u8 mmcies = wusbhc->mmcies_max;
+ wusbhc->mmcie = kcalloc(mmcies, sizeof(wusbhc->mmcie[0]), GFP_KERNEL);
+ if (wusbhc->mmcie == NULL)
+ return -ENOMEM;
+ mutex_init(&wusbhc->mmcie_mutex);
+ return 0;
+}
+
+/* Release resources used by the MMCIEs handling mechanism */
+void wusbhc_mmcie_destroy(struct wusbhc *wusbhc)
+{
+ kfree(wusbhc->mmcie);
+}
+
+/*
+ * Add or replace an MMC Wireless USB IE.
+ *
+ * @interval: See WUSB1.0[8.5.3.1]
+ * @repeat_cnt: See WUSB1.0[8.5.3.1]
+ * @handle: See WUSB1.0[8.5.3.1]
+ * @wuie: Pointer to the header of the WUSB IE data to add.
+ * MUST BE allocated in a kmalloc buffer (no stack or
+ * vmalloc).
+ * THE CALLER ALWAYS OWNS THE POINTER (we don't free it
+ * on remove, we just forget about it).
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Goes over the *whole* @wusbhc->mmcie array looking for (a) the
+ * first free spot and (b) if @wuie is already in the array (aka:
+ * transmitted in the MMCs) the spot were it is.
+ *
+ * If present, we "overwrite it" (update).
+ *
+ *
+ * NOTE: Need special ordering rules -- see below WUSB1.0 Table 7-38.
+ * The host uses the handle as the 'sort' index. We
+ * allocate the last one always for the WUIE_ID_HOST_INFO, and
+ * the rest, first come first serve in inverse order.
+ *
+ * Host software must make sure that it adds the other IEs in
+ * the right order... the host hardware is responsible for
+ * placing the WCTA IEs in the right place with the other IEs
+ * set by host software.
+ *
+ * NOTE: we can access wusbhc->wa_descr without locking because it is
+ * read only.
+ */
+int wusbhc_mmcie_set(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+ struct wuie_hdr *wuie)
+{
+ int result = -ENOBUFS;
+ unsigned handle, itr;
+
+ /* Search a handle, taking into account the ordering */
+ mutex_lock(&wusbhc->mmcie_mutex);
+ switch (wuie->bIEIdentifier) {
+ case WUIE_ID_HOST_INFO:
+ /* Always last */
+ handle = wusbhc->mmcies_max - 1;
+ break;
+ case WUIE_ID_ISOCH_DISCARD:
+ dev_err(wusbhc->dev, "Special ordering case for WUIE ID 0x%x "
+ "unimplemented\n", wuie->bIEIdentifier);
+ result = -ENOSYS;
+ goto error_unlock;
+ default:
+ /* search for it or find the last empty slot */
+ handle = ~0;
+ for (itr = 0; itr < wusbhc->mmcies_max - 1; itr++) {
+ if (wusbhc->mmcie[itr] == wuie) {
+ handle = itr;
+ break;
+ }
+ if (wusbhc->mmcie[itr] == NULL)
+ handle = itr;
+ }
+ if (handle == ~0)
+ goto error_unlock;
+ }
+ result = (wusbhc->mmcie_add)(wusbhc, interval, repeat_cnt, handle,
+ wuie);
+ if (result >= 0)
+ wusbhc->mmcie[handle] = wuie;
+error_unlock:
+ mutex_unlock(&wusbhc->mmcie_mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_mmcie_set);
+
+/*
+ * Remove an MMC IE previously added with wusbhc_mmcie_set()
+ *
+ * @wuie Pointer used to add the WUIE
+ */
+void wusbhc_mmcie_rm(struct wusbhc *wusbhc, struct wuie_hdr *wuie)
+{
+ int result;
+ unsigned handle, itr;
+
+ mutex_lock(&wusbhc->mmcie_mutex);
+ for (itr = 0; itr < wusbhc->mmcies_max; itr++) {
+ if (wusbhc->mmcie[itr] == wuie) {
+ handle = itr;
+ goto found;
+ }
+ }
+ mutex_unlock(&wusbhc->mmcie_mutex);
+ return;
+
+found:
+ result = (wusbhc->mmcie_rm)(wusbhc, handle);
+ if (result == 0)
+ wusbhc->mmcie[itr] = NULL;
+ mutex_unlock(&wusbhc->mmcie_mutex);
+}
+EXPORT_SYMBOL_GPL(wusbhc_mmcie_rm);
+
+/*
+ * wusbhc_start - start transmitting MMCs and accepting connections
+ * @wusbhc: the HC to start
+ * @chid: the CHID to use for this host
+ *
+ * Establishes a cluster reservation, enables device connections, and
+ * starts MMCs with appropriate DNTS parameters.
+ */
+int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
+{
+ int result;
+ struct device *dev = wusbhc->dev;
+
+ WARN_ON(wusbhc->wuie_host_info != NULL);
+
+ result = wusbhc_rsv_establish(wusbhc);
+ if (result < 0) {
+ dev_err(dev, "cannot establish cluster reservation: %d\n",
+ result);
+ goto error_rsv_establish;
+ }
+
+ result = wusbhc_devconnect_start(wusbhc, chid);
+ if (result < 0) {
+ dev_err(dev, "error enabling device connections: %d\n", result);
+ goto error_devconnect_start;
+ }
+
+ result = wusbhc_sec_start(wusbhc);
+ if (result < 0) {
+ dev_err(dev, "error starting security in the HC: %d\n", result);
+ goto error_sec_start;
+ }
+ /* FIXME: the choice of the DNTS parameters is somewhat
+ * arbitrary */
+ result = wusbhc->set_num_dnts(wusbhc, 0, 15);
+ if (result < 0) {
+ dev_err(dev, "Cannot set DNTS parameters: %d\n", result);
+ goto error_set_num_dnts;
+ }
+ result = wusbhc->start(wusbhc);
+ if (result < 0) {
+ dev_err(dev, "error starting wusbch: %d\n", result);
+ goto error_wusbhc_start;
+ }
+ wusbhc->active = 1;
+ return 0;
+
+error_wusbhc_start:
+ wusbhc_sec_stop(wusbhc);
+error_set_num_dnts:
+error_sec_start:
+ wusbhc_devconnect_stop(wusbhc);
+error_devconnect_start:
+ wusbhc_rsv_terminate(wusbhc);
+error_rsv_establish:
+ return result;
+}
+
+/*
+ * Disconnect all from the WUSB Channel
+ *
+ * Send a Host Disconnect IE in the MMC, wait, don't send it any more
+ */
+static int __wusbhc_host_disconnect_ie(struct wusbhc *wusbhc)
+{
+ int result = -ENOMEM;
+ struct wuie_host_disconnect *host_disconnect_ie;
+ might_sleep();
+ host_disconnect_ie = kmalloc(sizeof(*host_disconnect_ie), GFP_KERNEL);
+ if (host_disconnect_ie == NULL)
+ goto error_alloc;
+ host_disconnect_ie->hdr.bLength = sizeof(*host_disconnect_ie);
+ host_disconnect_ie->hdr.bIEIdentifier = WUIE_ID_HOST_DISCONNECT;
+ result = wusbhc_mmcie_set(wusbhc, 0, 0, &host_disconnect_ie->hdr);
+ if (result < 0)
+ goto error_mmcie_set;
+
+ /* WUSB1.0[8.5.3.1 & 7.5.2] */
+ msleep(100);
+ wusbhc_mmcie_rm(wusbhc, &host_disconnect_ie->hdr);
+error_mmcie_set:
+ kfree(host_disconnect_ie);
+error_alloc:
+ return result;
+}
+
+/*
+ * wusbhc_stop - stop transmitting MMCs
+ * @wusbhc: the HC to stop
+ *
+ * Send a Host Disconnect IE, wait, remove all the MMCs (stop sending MMCs).
+ *
+ * If we can't allocate a Host Stop IE, screw it, we don't notify the
+ * devices we are disconnecting...
+ */
+void wusbhc_stop(struct wusbhc *wusbhc)
+{
+ if (wusbhc->active) {
+ wusbhc->active = 0;
+ wusbhc->stop(wusbhc);
+ wusbhc_sec_stop(wusbhc);
+ __wusbhc_host_disconnect_ie(wusbhc);
+ wusbhc_devconnect_stop(wusbhc);
+ wusbhc_rsv_terminate(wusbhc);
+ }
+}
+EXPORT_SYMBOL_GPL(wusbhc_stop);
+
+/*
+ * Change the CHID in a WUSB Channel
+ *
+ * If it is just a new CHID, send a Host Disconnect IE and then change
+ * the CHID IE.
+ */
+static int __wusbhc_chid_change(struct wusbhc *wusbhc,
+ const struct wusb_ckhdid *chid)
+{
+ int result = -ENOSYS;
+ struct device *dev = wusbhc->dev;
+ dev_err(dev, "%s() not implemented yet\n", __func__);
+ return result;
+
+ BUG_ON(wusbhc->wuie_host_info == NULL);
+ __wusbhc_host_disconnect_ie(wusbhc);
+ wusbhc->wuie_host_info->CHID = *chid;
+ result = wusbhc_mmcie_set(wusbhc, 0, 0, &wusbhc->wuie_host_info->hdr);
+ if (result < 0)
+ dev_err(dev, "Can't update Host Info WUSB IE: %d\n", result);
+ return result;
+}
+
+/*
+ * Set/reset/update a new CHID
+ *
+ * Depending on the previous state of the MMCs, start, stop or change
+ * the sent MMC. This effectively switches the host controller on and
+ * off (radio wise).
+ */
+int wusbhc_chid_set(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid)
+{
+ int result = 0;
+
+ if (memcmp(chid, &wusb_ckhdid_zero, sizeof(chid)) == 0)
+ chid = NULL;
+
+ mutex_lock(&wusbhc->mutex);
+ if (wusbhc->active) {
+ if (chid)
+ result = __wusbhc_chid_change(wusbhc, chid);
+ else
+ wusbhc_stop(wusbhc);
+ } else {
+ if (chid)
+ wusbhc_start(wusbhc, chid);
+ }
+ mutex_unlock(&wusbhc->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_chid_set);
--- /dev/null
+/*
+ * Wireless USB Host Controller
+ * UWB Protocol Adaptation Layer (PAL) glue.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "wusbhc.h"
+
+/**
+ * wusbhc_pal_register - register the WUSB HC as a UWB PAL
+ * @wusbhc: the WUSB HC
+ */
+int wusbhc_pal_register(struct wusbhc *wusbhc)
+{
+ uwb_pal_init(&wusbhc->pal);
+
+ wusbhc->pal.name = "wusbhc";
+ wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
+
+ return uwb_pal_register(wusbhc->uwb_rc, &wusbhc->pal);
+}
+
+/**
+ * wusbhc_pal_register - unregister the WUSB HC as a UWB PAL
+ * @wusbhc: the WUSB HC
+ */
+void wusbhc_pal_unregister(struct wusbhc *wusbhc)
+{
+ uwb_pal_unregister(wusbhc->uwb_rc, &wusbhc->pal);
+}
--- /dev/null
+/*
+ * WUSB cluster reservation management
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "wusbhc.h"
+
+/*
+ * WUSB cluster reservations are multicast reservations with the
+ * broadcast cluster ID (BCID) as the target DevAddr.
+ *
+ * FIXME: consider adjusting the reservation depending on what devices
+ * are attached.
+ */
+
+static int wusbhc_bwa_set(struct wusbhc *wusbhc, u8 stream,
+ const struct uwb_mas_bm *mas)
+{
+ if (mas == NULL)
+ mas = &uwb_mas_bm_zero;
+ return wusbhc->bwa_set(wusbhc, stream, mas);
+}
+
+/**
+ * wusbhc_rsv_complete_cb - WUSB HC reservation complete callback
+ * @rsv: the reservation
+ *
+ * Either set or clear the HC's view of the reservation.
+ *
+ * FIXME: when a reservation is denied the HC should be stopped.
+ */
+static void wusbhc_rsv_complete_cb(struct uwb_rsv *rsv)
+{
+ struct wusbhc *wusbhc = rsv->pal_priv;
+ struct device *dev = wusbhc->dev;
+ char buf[72];
+
+ switch (rsv->state) {
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
+ dev_dbg(dev, "established reservation: %s\n", buf);
+ wusbhc_bwa_set(wusbhc, rsv->stream, &rsv->mas);
+ break;
+ case UWB_RSV_STATE_NONE:
+ dev_dbg(dev, "removed reservation\n");
+ wusbhc_bwa_set(wusbhc, 0, NULL);
+ wusbhc->rsv = NULL;
+ break;
+ default:
+ dev_dbg(dev, "unexpected reservation state: %d\n", rsv->state);
+ break;
+ }
+}
+
+
+/**
+ * wusbhc_rsv_establish - establish a reservation for the cluster
+ * @wusbhc: the WUSB HC requesting a bandwith reservation
+ */
+int wusbhc_rsv_establish(struct wusbhc *wusbhc)
+{
+ struct uwb_rc *rc = wusbhc->uwb_rc;
+ struct uwb_rsv *rsv;
+ struct uwb_dev_addr bcid;
+ int ret;
+
+ rsv = uwb_rsv_create(rc, wusbhc_rsv_complete_cb, wusbhc);
+ if (rsv == NULL)
+ return -ENOMEM;
+
+ bcid.data[0] = wusbhc->cluster_id;
+ bcid.data[1] = 0;
+
+ rsv->owner = &rc->uwb_dev;
+ rsv->target.type = UWB_RSV_TARGET_DEVADDR;
+ rsv->target.devaddr = bcid;
+ rsv->type = UWB_DRP_TYPE_PRIVATE;
+ rsv->max_mas = 256;
+ rsv->min_mas = 16; /* one MAS per zone? */
+ rsv->sparsity = 16; /* at least one MAS in each zone? */
+ rsv->is_multicast = true;
+
+ ret = uwb_rsv_establish(rsv);
+ if (ret == 0)
+ wusbhc->rsv = rsv;
+ else
+ uwb_rsv_destroy(rsv);
+ return ret;
+}
+
+
+/**
+ * wusbhc_rsv_terminate - terminate any cluster reservation
+ * @wusbhc: the WUSB host whose reservation is to be terminated
+ */
+void wusbhc_rsv_terminate(struct wusbhc *wusbhc)
+{
+ if (wusbhc->rsv)
+ uwb_rsv_terminate(wusbhc->rsv);
+}
--- /dev/null
+/*
+ * Wireless USB Host Controller
+ * Root Hub operations
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We fake a root hub that has fake ports (as many as simultaneous
+ * devices the Wireless USB Host Controller can deal with). For each
+ * port we keep an state in @wusbhc->port[index] identical to the one
+ * specified in the USB2.0[ch11] spec and some extra device
+ * information that complements the one in 'struct usb_device' (as
+ * this lacs a hcpriv pointer).
+ *
+ * Note this is common to WHCI and HWA host controllers.
+ *
+ * Through here we enable most of the state changes that the USB stack
+ * will use to connect or disconnect devices. We need to do some
+ * forced adaptation of Wireless USB device states vs. wired:
+ *
+ * USB: WUSB:
+ *
+ * Port Powered-off port slot n/a
+ * Powered-on port slot available
+ * Disconnected port slot available
+ * Connected port slot assigned device
+ * device sent DN_Connect
+ * device was authenticated
+ * Enabled device is authenticated, transitioned
+ * from unauth -> auth -> default address
+ * -> enabled
+ * Reset disconnect
+ * Disable disconnect
+ *
+ * This maps the standard USB port states with the WUSB device states
+ * so we can fake ports without having to modify the USB stack.
+ *
+ * FIXME: this process will change in the future
+ *
+ *
+ * ENTRY POINTS
+ *
+ * Our entry points into here are, as in hcd.c, the USB stack root hub
+ * ops defined in the usb_hcd struct:
+ *
+ * wusbhc_rh_status_data() Provide hub and port status data bitmap
+ *
+ * wusbhc_rh_control() Execution of all the major requests
+ * you can do to a hub (Set|Clear
+ * features, get descriptors, status, etc).
+ *
+ * wusbhc_rh_[suspend|resume]() That
+ *
+ * wusbhc_rh_start_port_reset() ??? unimplemented
+ */
+#include "wusbhc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * Reset a fake port
+ *
+ * This can be called to reset a port from any other state or to reset
+ * it when connecting. In Wireless USB they are different; when doing
+ * a new connect that involves going over the authentication. When
+ * just reseting, its a different story.
+ *
+ * The Linux USB stack resets a port twice before it considers it
+ * enabled, so we have to detect and ignore that.
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Supposedly we are the only thread accesing @wusbhc->port; in any
+ * case, maybe we should move the mutex locking from
+ * wusbhc_devconnect_auth() to here.
+ *
+ * @port_idx refers to the wusbhc's port index, not the USB port number
+ */
+static int wusbhc_rh_port_reset(struct wusbhc *wusbhc, u8 port_idx)
+{
+ int result = 0;
+ struct wusb_port *port = wusb_port_by_idx(wusbhc, port_idx);
+
+ d_fnstart(3, wusbhc->dev, "(wusbhc %p port_idx %u)\n",
+ wusbhc, port_idx);
+ if (port->reset_count == 0) {
+ wusbhc_devconnect_auth(wusbhc, port_idx);
+ port->reset_count++;
+ } else if (port->reset_count == 1)
+ /* see header */
+ d_printf(2, wusbhc->dev, "Ignoring second reset on port_idx "
+ "%u\n", port_idx);
+ else
+ result = wusbhc_dev_reset(wusbhc, port_idx);
+ d_fnend(3, wusbhc->dev, "(wusbhc %p port_idx %u) = %d\n",
+ wusbhc, port_idx, result);
+ return result;
+}
+
+/*
+ * Return the hub change status bitmap
+ *
+ * The bits in the change status bitmap are cleared when a
+ * ClearPortFeature request is issued (USB2.0[11.12.3,11.12.4].
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * WARNING!! This gets called from atomic context; we cannot get the
+ * mutex--the only race condition we can find is some bit
+ * changing just after we copy it, which shouldn't be too
+ * big of a problem [and we can't make it an spinlock
+ * because other parts need to take it and sleep] .
+ *
+ * @usb_hcd is refcounted, so it won't dissapear under us
+ * and before killing a host, the polling of the root hub
+ * would be stopped anyway.
+ */
+int wusbhc_rh_status_data(struct usb_hcd *usb_hcd, char *_buf)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ size_t cnt, size;
+ unsigned long *buf = (unsigned long *) _buf;
+
+ d_fnstart(1, wusbhc->dev, "(wusbhc %p)\n", wusbhc);
+ /* WE DON'T LOCK, see comment */
+ size = wusbhc->ports_max + 1 /* hub bit */;
+ size = (size + 8 - 1) / 8; /* round to bytes */
+ for (cnt = 0; cnt < wusbhc->ports_max; cnt++)
+ if (wusb_port_by_idx(wusbhc, cnt)->change)
+ set_bit(cnt + 1, buf);
+ else
+ clear_bit(cnt + 1, buf);
+ d_fnend(1, wusbhc->dev, "(wusbhc %p) %u, buffer:\n", wusbhc, (int)size);
+ d_dump(1, wusbhc->dev, _buf, size);
+ return size;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_status_data);
+
+/*
+ * Return the hub's desciptor
+ *
+ * NOTE: almost cut and paste from ehci-hub.c
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked
+ */
+static int wusbhc_rh_get_hub_descr(struct wusbhc *wusbhc, u16 wValue,
+ u16 wIndex,
+ struct usb_hub_descriptor *descr,
+ u16 wLength)
+{
+ u16 temp = 1 + (wusbhc->ports_max / 8);
+ u8 length = 7 + 2 * temp;
+
+ if (wLength < length)
+ return -ENOSPC;
+ descr->bDescLength = 7 + 2 * temp;
+ descr->bDescriptorType = 0x29; /* HUB type */
+ descr->bNbrPorts = wusbhc->ports_max;
+ descr->wHubCharacteristics = cpu_to_le16(
+ 0x00 /* All ports power at once */
+ | 0x00 /* not part of compound device */
+ | 0x10 /* No overcurrent protection */
+ | 0x00 /* 8 FS think time FIXME ?? */
+ | 0x00); /* No port indicators */
+ descr->bPwrOn2PwrGood = 0;
+ descr->bHubContrCurrent = 0;
+ /* two bitmaps: ports removable, and usb 1.0 legacy PortPwrCtrlMask */
+ memset(&descr->bitmap[0], 0, temp);
+ memset(&descr->bitmap[temp], 0xff, temp);
+ return 0;
+}
+
+/*
+ * Clear a hub feature
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Nothing to do, so no locking needed ;)
+ */
+static int wusbhc_rh_clear_hub_feat(struct wusbhc *wusbhc, u16 feature)
+{
+ int result;
+ struct device *dev = wusbhc->dev;
+
+ d_fnstart(4, dev, "(%p, feature 0x%04u)\n", wusbhc, feature);
+ switch (feature) {
+ case C_HUB_LOCAL_POWER:
+ /* FIXME: maybe plug bit 0 to the power input status,
+ * if any?
+ * see wusbhc_rh_get_hub_status() */
+ case C_HUB_OVER_CURRENT:
+ result = 0;
+ break;
+ default:
+ result = -EPIPE;
+ }
+ d_fnend(4, dev, "(%p, feature 0x%04u), %d\n", wusbhc, feature, result);
+ return result;
+}
+
+/*
+ * Return hub status (it is always zero...)
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ *
+ * Nothing to do, so no locking needed ;)
+ */
+static int wusbhc_rh_get_hub_status(struct wusbhc *wusbhc, u32 *buf,
+ u16 wLength)
+{
+ /* FIXME: maybe plug bit 0 to the power input status (if any)? */
+ *buf = 0;
+ return 0;
+}
+
+/*
+ * Set a port feature
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_set_port_feat(struct wusbhc *wusbhc, u16 feature,
+ u8 selector, u8 port_idx)
+{
+ int result = -EINVAL;
+ struct device *dev = wusbhc->dev;
+
+ d_fnstart(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d)\n",
+ feature, selector, port_idx);
+
+ if (port_idx > wusbhc->ports_max)
+ goto error;
+
+ switch (feature) {
+ /* According to USB2.0[11.24.2.13]p2, these features
+ * are not required to be implemented. */
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ case USB_PORT_FEAT_C_ENABLE:
+ case USB_PORT_FEAT_C_SUSPEND:
+ case USB_PORT_FEAT_C_CONNECTION:
+ case USB_PORT_FEAT_C_RESET:
+ result = 0;
+ break;
+
+ case USB_PORT_FEAT_POWER:
+ /* No such thing, but we fake it works */
+ mutex_lock(&wusbhc->mutex);
+ wusb_port_by_idx(wusbhc, port_idx)->status |= USB_PORT_STAT_POWER;
+ mutex_unlock(&wusbhc->mutex);
+ result = 0;
+ break;
+ case USB_PORT_FEAT_RESET:
+ result = wusbhc_rh_port_reset(wusbhc, port_idx);
+ break;
+ case USB_PORT_FEAT_ENABLE:
+ case USB_PORT_FEAT_SUSPEND:
+ dev_err(dev, "(port_idx %d) set feat %d/%d UNIMPLEMENTED\n",
+ port_idx, feature, selector);
+ result = -ENOSYS;
+ break;
+ default:
+ dev_err(dev, "(port_idx %d) set feat %d/%d UNKNOWN\n",
+ port_idx, feature, selector);
+ result = -EPIPE;
+ break;
+ }
+error:
+ d_fnend(4, dev, "(feat 0x%04u, selector 0x%u, port_idx %d) = %d\n",
+ feature, selector, port_idx, result);
+ return result;
+}
+
+/*
+ * Clear a port feature...
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_clear_port_feat(struct wusbhc *wusbhc, u16 feature,
+ u8 selector, u8 port_idx)
+{
+ int result = -EINVAL;
+ struct device *dev = wusbhc->dev;
+
+ d_fnstart(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d)\n",
+ wusbhc, feature, selector, port_idx);
+
+ if (port_idx > wusbhc->ports_max)
+ goto error;
+
+ mutex_lock(&wusbhc->mutex);
+ result = 0;
+ switch (feature) {
+ case USB_PORT_FEAT_POWER: /* fake port always on */
+ /* According to USB2.0[11.24.2.7.1.4], no need to implement? */
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_RESET;
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_CONNECTION;
+ break;
+ case USB_PORT_FEAT_ENABLE:
+ __wusbhc_dev_disable(wusbhc, port_idx);
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ wusb_port_by_idx(wusbhc, port_idx)->change &= ~USB_PORT_STAT_C_ENABLE;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ case USB_PORT_FEAT_C_SUSPEND:
+ case 0xffff: /* ??? FIXME */
+ dev_err(dev, "(port_idx %d) Clear feat %d/%d UNIMPLEMENTED\n",
+ port_idx, feature, selector);
+ /* dump_stack(); */
+ result = -ENOSYS;
+ break;
+ default:
+ dev_err(dev, "(port_idx %d) Clear feat %d/%d UNKNOWN\n",
+ port_idx, feature, selector);
+ result = -EPIPE;
+ break;
+ }
+ mutex_unlock(&wusbhc->mutex);
+error:
+ d_fnend(4, dev, "(wusbhc %p feat 0x%04x selector %d port_idx %d) = "
+ "%d\n", wusbhc, feature, selector, port_idx, result);
+ return result;
+}
+
+/*
+ * Return the port's status
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+static int wusbhc_rh_get_port_status(struct wusbhc *wusbhc, u16 port_idx,
+ u32 *_buf, u16 wLength)
+{
+ int result = -EINVAL;
+ u16 *buf = (u16 *) _buf;
+
+ d_fnstart(1, wusbhc->dev, "(wusbhc %p port_idx %u wLength %u)\n",
+ wusbhc, port_idx, wLength);
+ if (port_idx > wusbhc->ports_max)
+ goto error;
+ mutex_lock(&wusbhc->mutex);
+ buf[0] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->status);
+ buf[1] = cpu_to_le16(wusb_port_by_idx(wusbhc, port_idx)->change);
+ result = 0;
+ mutex_unlock(&wusbhc->mutex);
+error:
+ d_fnend(1, wusbhc->dev, "(wusbhc %p) = %d, buffer:\n", wusbhc, result);
+ d_dump(1, wusbhc->dev, _buf, wLength);
+ return result;
+}
+
+/*
+ * Entry point for Root Hub operations
+ *
+ * @wusbhc is assumed referenced and @wusbhc->mutex unlocked.
+ */
+int wusbhc_rh_control(struct usb_hcd *usb_hcd, u16 reqntype, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ int result = -ENOSYS;
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+
+ switch (reqntype) {
+ case GetHubDescriptor:
+ result = wusbhc_rh_get_hub_descr(
+ wusbhc, wValue, wIndex,
+ (struct usb_hub_descriptor *) buf, wLength);
+ break;
+ case ClearHubFeature:
+ result = wusbhc_rh_clear_hub_feat(wusbhc, wValue);
+ break;
+ case GetHubStatus:
+ result = wusbhc_rh_get_hub_status(wusbhc, (u32 *)buf, wLength);
+ break;
+
+ case SetPortFeature:
+ result = wusbhc_rh_set_port_feat(wusbhc, wValue, wIndex >> 8,
+ (wIndex & 0xff) - 1);
+ break;
+ case ClearPortFeature:
+ result = wusbhc_rh_clear_port_feat(wusbhc, wValue, wIndex >> 8,
+ (wIndex & 0xff) - 1);
+ break;
+ case GetPortStatus:
+ result = wusbhc_rh_get_port_status(wusbhc, wIndex - 1,
+ (u32 *)buf, wLength);
+ break;
+
+ case SetHubFeature:
+ default:
+ dev_err(wusbhc->dev, "%s (%p [%p], %x, %x, %x, %p, %x) "
+ "UNIMPLEMENTED\n", __func__, usb_hcd, wusbhc, reqntype,
+ wValue, wIndex, buf, wLength);
+ /* dump_stack(); */
+ result = -ENOSYS;
+ }
+ return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_control);
+
+int wusbhc_rh_suspend(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+ usb_hcd, wusbhc);
+ /* dump_stack(); */
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_suspend);
+
+int wusbhc_rh_resume(struct usb_hcd *usb_hcd)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ dev_err(wusbhc->dev, "%s (%p [%p]) UNIMPLEMENTED\n", __func__,
+ usb_hcd, wusbhc);
+ /* dump_stack(); */
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_resume);
+
+int wusbhc_rh_start_port_reset(struct usb_hcd *usb_hcd, unsigned port_idx)
+{
+ struct wusbhc *wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+ dev_err(wusbhc->dev, "%s (%p [%p], port_idx %u) UNIMPLEMENTED\n",
+ __func__, usb_hcd, wusbhc, port_idx);
+ WARN_ON(1);
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(wusbhc_rh_start_port_reset);
+
+static void wusb_port_init(struct wusb_port *port)
+{
+ port->status |= USB_PORT_STAT_HIGH_SPEED;
+}
+
+/*
+ * Alloc fake port specific fields and status.
+ */
+int wusbhc_rh_create(struct wusbhc *wusbhc)
+{
+ int result = -ENOMEM;
+ size_t port_size, itr;
+ port_size = wusbhc->ports_max * sizeof(wusbhc->port[0]);
+ wusbhc->port = kzalloc(port_size, GFP_KERNEL);
+ if (wusbhc->port == NULL)
+ goto error_port_alloc;
+ for (itr = 0; itr < wusbhc->ports_max; itr++)
+ wusb_port_init(&wusbhc->port[itr]);
+ result = 0;
+error_port_alloc:
+ return result;
+}
+
+void wusbhc_rh_destroy(struct wusbhc *wusbhc)
+{
+ kfree(wusbhc->port);
+}
--- /dev/null
+/*
+ * Wireless USB Host Controller
+ * Security support: encryption enablement, etc
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+#include <linux/types.h>
+#include <linux/usb/ch9.h>
+#include <linux/random.h>
+#include "wusbhc.h"
+
+/*
+ * DEBUG & SECURITY WARNING!!!!
+ *
+ * If you enable this past 1, the debug code will weaken the
+ * cryptographic safety of the system (on purpose, for debugging).
+ *
+ * Weaken means:
+ * we print secret keys and intermediate values all the way,
+ */
+#undef D_LOCAL
+#define D_LOCAL 2
+#include <linux/uwb/debug.h>
+
+static void wusbhc_set_gtk_callback(struct urb *urb);
+static void wusbhc_gtk_rekey_done_work(struct work_struct *work);
+
+int wusbhc_sec_create(struct wusbhc *wusbhc)
+{
+ wusbhc->gtk.descr.bLength = sizeof(wusbhc->gtk.descr) + sizeof(wusbhc->gtk.data);
+ wusbhc->gtk.descr.bDescriptorType = USB_DT_KEY;
+ wusbhc->gtk.descr.bReserved = 0;
+
+ wusbhc->gtk_index = wusb_key_index(0, WUSB_KEY_INDEX_TYPE_GTK,
+ WUSB_KEY_INDEX_ORIGINATOR_HOST);
+
+ INIT_WORK(&wusbhc->gtk_rekey_done_work, wusbhc_gtk_rekey_done_work);
+
+ return 0;
+}
+
+
+/* Called when the HC is destroyed */
+void wusbhc_sec_destroy(struct wusbhc *wusbhc)
+{
+}
+
+
+/**
+ * wusbhc_next_tkid - generate a new, currently unused, TKID
+ * @wusbhc: the WUSB host controller
+ * @wusb_dev: the device whose PTK the TKID is for
+ * (or NULL for a TKID for a GTK)
+ *
+ * The generated TKID consist of two parts: the device's authenicated
+ * address (or 0 or a GTK); and an incrementing number. This ensures
+ * that TKIDs cannot be shared between devices and by the time the
+ * incrementing number wraps around the older TKIDs will no longer be
+ * in use (a maximum of two keys may be active at any one time).
+ */
+static u32 wusbhc_next_tkid(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ u32 *tkid;
+ u32 addr;
+
+ if (wusb_dev == NULL) {
+ tkid = &wusbhc->gtk_tkid;
+ addr = 0;
+ } else {
+ tkid = &wusb_port_by_idx(wusbhc, wusb_dev->port_idx)->ptk_tkid;
+ addr = wusb_dev->addr & 0x7f;
+ }
+
+ *tkid = (addr << 8) | ((*tkid + 1) & 0xff);
+
+ return *tkid;
+}
+
+static void wusbhc_generate_gtk(struct wusbhc *wusbhc)
+{
+ const size_t key_size = sizeof(wusbhc->gtk.data);
+ u32 tkid;
+
+ tkid = wusbhc_next_tkid(wusbhc, NULL);
+
+ wusbhc->gtk.descr.tTKID[0] = (tkid >> 0) & 0xff;
+ wusbhc->gtk.descr.tTKID[1] = (tkid >> 8) & 0xff;
+ wusbhc->gtk.descr.tTKID[2] = (tkid >> 16) & 0xff;
+
+ get_random_bytes(wusbhc->gtk.descr.bKeyData, key_size);
+}
+
+/**
+ * wusbhc_sec_start - start the security management process
+ * @wusbhc: the WUSB host controller
+ *
+ * Generate and set an initial GTK on the host controller.
+ *
+ * Called when the HC is started.
+ */
+int wusbhc_sec_start(struct wusbhc *wusbhc)
+{
+ const size_t key_size = sizeof(wusbhc->gtk.data);
+ int result;
+
+ wusbhc_generate_gtk(wusbhc);
+
+ result = wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid,
+ &wusbhc->gtk.descr.bKeyData, key_size);
+ if (result < 0)
+ dev_err(wusbhc->dev, "cannot set GTK for the host: %d\n",
+ result);
+
+ return result;
+}
+
+/**
+ * wusbhc_sec_stop - stop the security management process
+ * @wusbhc: the WUSB host controller
+ *
+ * Wait for any pending GTK rekeys to stop.
+ */
+void wusbhc_sec_stop(struct wusbhc *wusbhc)
+{
+ cancel_work_sync(&wusbhc->gtk_rekey_done_work);
+}
+
+
+/** @returns encryption type name */
+const char *wusb_et_name(u8 x)
+{
+ switch (x) {
+ case USB_ENC_TYPE_UNSECURE: return "unsecure";
+ case USB_ENC_TYPE_WIRED: return "wired";
+ case USB_ENC_TYPE_CCM_1: return "CCM-1";
+ case USB_ENC_TYPE_RSA_1: return "RSA-1";
+ default: return "unknown";
+ }
+}
+EXPORT_SYMBOL_GPL(wusb_et_name);
+
+/*
+ * Set the device encryption method
+ *
+ * We tell the device which encryption method to use; we do this when
+ * setting up the device's security.
+ */
+static int wusb_dev_set_encryption(struct usb_device *usb_dev, int value)
+{
+ int result;
+ struct device *dev = &usb_dev->dev;
+ struct wusb_dev *wusb_dev = usb_dev->wusb_dev;
+
+ if (value) {
+ value = wusb_dev->ccm1_etd.bEncryptionValue;
+ } else {
+ /* FIXME: should be wusb_dev->etd[UNSECURE].bEncryptionValue */
+ value = 0;
+ }
+ /* Set device's */
+ result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_ENCRYPTION,
+ USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+ value, 0, NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0)
+ dev_err(dev, "Can't set device's WUSB encryption to "
+ "%s (value %d): %d\n",
+ wusb_et_name(wusb_dev->ccm1_etd.bEncryptionType),
+ wusb_dev->ccm1_etd.bEncryptionValue, result);
+ return result;
+}
+
+/*
+ * Set the GTK to be used by a device.
+ *
+ * The device must be authenticated.
+ */
+static int wusb_dev_set_gtk(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev)
+{
+ struct usb_device *usb_dev = wusb_dev->usb_dev;
+
+ return usb_control_msg(
+ usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_DESCRIPTOR,
+ USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+ USB_DT_KEY << 8 | wusbhc->gtk_index, 0,
+ &wusbhc->gtk.descr, wusbhc->gtk.descr.bLength,
+ 1000);
+}
+
+
+/* FIXME: prototype for adding security */
+int wusb_dev_sec_add(struct wusbhc *wusbhc,
+ struct usb_device *usb_dev, struct wusb_dev *wusb_dev)
+{
+ int result, bytes, secd_size;
+ struct device *dev = &usb_dev->dev;
+ struct usb_security_descriptor secd;
+ const struct usb_encryption_descriptor *etd, *ccm1_etd = NULL;
+ void *secd_buf;
+ const void *itr, *top;
+ char buf[64];
+
+ d_fnstart(3, dev, "(usb_dev %p, wusb_dev %p)\n", usb_dev, wusb_dev);
+ result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
+ 0, &secd, sizeof(secd));
+ if (result < sizeof(secd)) {
+ dev_err(dev, "Can't read security descriptor or "
+ "not enough data: %d\n", result);
+ goto error_secd;
+ }
+ secd_size = le16_to_cpu(secd.wTotalLength);
+ d_printf(5, dev, "got %d bytes of sec descriptor, total is %d\n",
+ result, secd_size);
+ secd_buf = kmalloc(secd_size, GFP_KERNEL);
+ if (secd_buf == NULL) {
+ dev_err(dev, "Can't allocate space for security descriptors\n");
+ goto error_secd_alloc;
+ }
+ result = usb_get_descriptor(usb_dev, USB_DT_SECURITY,
+ 0, secd_buf, secd_size);
+ if (result < secd_size) {
+ dev_err(dev, "Can't read security descriptor or "
+ "not enough data: %d\n", result);
+ goto error_secd_all;
+ }
+ d_printf(5, dev, "got %d bytes of sec descriptors\n", result);
+ bytes = 0;
+ itr = secd_buf + sizeof(secd);
+ top = secd_buf + result;
+ while (itr < top) {
+ etd = itr;
+ if (top - itr < sizeof(*etd)) {
+ dev_err(dev, "BUG: bad device security descriptor; "
+ "not enough data (%zu vs %zu bytes left)\n",
+ top - itr, sizeof(*etd));
+ break;
+ }
+ if (etd->bLength < sizeof(*etd)) {
+ dev_err(dev, "BUG: bad device encryption descriptor; "
+ "descriptor is too short "
+ "(%u vs %zu needed)\n",
+ etd->bLength, sizeof(*etd));
+ break;
+ }
+ itr += etd->bLength;
+ bytes += snprintf(buf + bytes, sizeof(buf) - bytes,
+ "%s (0x%02x/%02x) ",
+ wusb_et_name(etd->bEncryptionType),
+ etd->bEncryptionValue, etd->bAuthKeyIndex);
+ if (etd->bEncryptionType == USB_ENC_TYPE_CCM_1)
+ ccm1_etd = etd;
+ }
+ /* This code only supports CCM1 as of now. */
+ /* FIXME: user has to choose which sec mode to use?
+ * In theory we want CCM */
+ if (ccm1_etd == NULL) {
+ dev_err(dev, "WUSB device doesn't support CCM1 encryption, "
+ "can't use!\n");
+ result = -EINVAL;
+ goto error_no_ccm1;
+ }
+ wusb_dev->ccm1_etd = *ccm1_etd;
+ dev_info(dev, "supported encryption: %s; using %s (0x%02x/%02x)\n",
+ buf, wusb_et_name(ccm1_etd->bEncryptionType),
+ ccm1_etd->bEncryptionValue, ccm1_etd->bAuthKeyIndex);
+ result = 0;
+ kfree(secd_buf);
+out:
+ d_fnend(3, dev, "(usb_dev %p, wusb_dev %p) = %d\n",
+ usb_dev, wusb_dev, result);
+ return result;
+
+
+error_no_ccm1:
+error_secd_all:
+ kfree(secd_buf);
+error_secd_alloc:
+error_secd:
+ goto out;
+}
+
+void wusb_dev_sec_rm(struct wusb_dev *wusb_dev)
+{
+ /* Nothing so far */
+}
+
+static void hs_printk(unsigned level, struct device *dev,
+ struct usb_handshake *hs)
+{
+ d_printf(level, dev,
+ " bMessageNumber: %u\n"
+ " bStatus: %u\n"
+ " tTKID: %02x %02x %02x\n"
+ " CDID: %02x %02x %02x %02x %02x %02x %02x %02x\n"
+ " %02x %02x %02x %02x %02x %02x %02x %02x\n"
+ " nonce: %02x %02x %02x %02x %02x %02x %02x %02x\n"
+ " %02x %02x %02x %02x %02x %02x %02x %02x\n"
+ " MIC: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+ hs->bMessageNumber, hs->bStatus,
+ hs->tTKID[2], hs->tTKID[1], hs->tTKID[0],
+ hs->CDID[0], hs->CDID[1], hs->CDID[2], hs->CDID[3],
+ hs->CDID[4], hs->CDID[5], hs->CDID[6], hs->CDID[7],
+ hs->CDID[8], hs->CDID[9], hs->CDID[10], hs->CDID[11],
+ hs->CDID[12], hs->CDID[13], hs->CDID[14], hs->CDID[15],
+ hs->nonce[0], hs->nonce[1], hs->nonce[2], hs->nonce[3],
+ hs->nonce[4], hs->nonce[5], hs->nonce[6], hs->nonce[7],
+ hs->nonce[8], hs->nonce[9], hs->nonce[10], hs->nonce[11],
+ hs->nonce[12], hs->nonce[13], hs->nonce[14], hs->nonce[15],
+ hs->MIC[0], hs->MIC[1], hs->MIC[2], hs->MIC[3],
+ hs->MIC[4], hs->MIC[5], hs->MIC[6], hs->MIC[7]);
+}
+
+/**
+ * Update the address of an unauthenticated WUSB device
+ *
+ * Once we have successfully authenticated, we take it to addr0 state
+ * and then to a normal address.
+ *
+ * Before the device's address (as known by it) was usb_dev->devnum |
+ * 0x80 (unauthenticated address). With this we update it to usb_dev->devnum.
+ */
+static int wusb_dev_update_address(struct wusbhc *wusbhc,
+ struct wusb_dev *wusb_dev)
+{
+ int result = -ENOMEM;
+ struct usb_device *usb_dev = wusb_dev->usb_dev;
+ struct device *dev = &usb_dev->dev;
+ u8 new_address = wusb_dev->addr & 0x7F;
+
+ /* Set address 0 */
+ result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_ADDRESS, 0,
+ 0, 0, NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "auth failed: can't set address 0: %d\n",
+ result);
+ goto error_addr0;
+ }
+ result = wusb_set_dev_addr(wusbhc, wusb_dev, 0);
+ if (result < 0)
+ goto error_addr0;
+ usb_ep0_reinit(usb_dev);
+
+ /* Set new (authenticated) address. */
+ result = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_ADDRESS, 0,
+ new_address, 0, NULL, 0,
+ 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "auth failed: can't set address %u: %d\n",
+ new_address, result);
+ goto error_addr;
+ }
+ result = wusb_set_dev_addr(wusbhc, wusb_dev, new_address);
+ if (result < 0)
+ goto error_addr;
+ usb_ep0_reinit(usb_dev);
+ usb_dev->authenticated = 1;
+error_addr:
+error_addr0:
+ return result;
+}
+
+/*
+ *
+ *
+ */
+/* FIXME: split and cleanup */
+int wusb_dev_4way_handshake(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
+ struct wusb_ckhdid *ck)
+{
+ int result = -ENOMEM;
+ struct usb_device *usb_dev = wusb_dev->usb_dev;
+ struct device *dev = &usb_dev->dev;
+ u32 tkid;
+ __le32 tkid_le;
+ struct usb_handshake *hs;
+ struct aes_ccm_nonce ccm_n;
+ u8 mic[8];
+ struct wusb_keydvt_in keydvt_in;
+ struct wusb_keydvt_out keydvt_out;
+
+ hs = kzalloc(3*sizeof(hs[0]), GFP_KERNEL);
+ if (hs == NULL) {
+ dev_err(dev, "can't allocate handshake data\n");
+ goto error_kzalloc;
+ }
+
+ /* We need to turn encryption before beginning the 4way
+ * hshake (WUSB1.0[.3.2.2]) */
+ result = wusb_dev_set_encryption(usb_dev, 1);
+ if (result < 0)
+ goto error_dev_set_encryption;
+
+ tkid = wusbhc_next_tkid(wusbhc, wusb_dev);
+ tkid_le = cpu_to_le32(tkid);
+
+ hs[0].bMessageNumber = 1;
+ hs[0].bStatus = 0;
+ memcpy(hs[0].tTKID, &tkid_le, sizeof(hs[0].tTKID));
+ hs[0].bReserved = 0;
+ memcpy(hs[0].CDID, &wusb_dev->cdid, sizeof(hs[0].CDID));
+ get_random_bytes(&hs[0].nonce, sizeof(hs[0].nonce));
+ memset(hs[0].MIC, 0, sizeof(hs[0].MIC)); /* Per WUSB1.0[T7-22] */
+
+ d_printf(1, dev, "I: sending hs1:\n");
+ hs_printk(2, dev, &hs[0]);
+
+ result = usb_control_msg(
+ usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_HANDSHAKE,
+ USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+ 1, 0, &hs[0], sizeof(hs[0]), 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Handshake1: request failed: %d\n", result);
+ goto error_hs1;
+ }
+
+ /* Handshake 2, from the device -- need to verify fields */
+ result = usb_control_msg(
+ usb_dev, usb_rcvctrlpipe(usb_dev, 0),
+ USB_REQ_GET_HANDSHAKE,
+ USB_DIR_IN | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+ 2, 0, &hs[1], sizeof(hs[1]), 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Handshake2: request failed: %d\n", result);
+ goto error_hs2;
+ }
+ d_printf(1, dev, "got HS2:\n");
+ hs_printk(2, dev, &hs[1]);
+
+ result = -EINVAL;
+ if (hs[1].bMessageNumber != 2) {
+ dev_err(dev, "Handshake2 failed: bad message number %u\n",
+ hs[1].bMessageNumber);
+ goto error_hs2;
+ }
+ if (hs[1].bStatus != 0) {
+ dev_err(dev, "Handshake2 failed: bad status %u\n",
+ hs[1].bStatus);
+ goto error_hs2;
+ }
+ if (memcmp(hs[0].tTKID, hs[1].tTKID, sizeof(hs[0].tTKID))) {
+ dev_err(dev, "Handshake2 failed: TKID mismatch "
+ "(#1 0x%02x%02x%02x vs #2 0x%02x%02x%02x)\n",
+ hs[0].tTKID[0], hs[0].tTKID[1], hs[0].tTKID[2],
+ hs[1].tTKID[0], hs[1].tTKID[1], hs[1].tTKID[2]);
+ goto error_hs2;
+ }
+ if (memcmp(hs[0].CDID, hs[1].CDID, sizeof(hs[0].CDID))) {
+ dev_err(dev, "Handshake2 failed: CDID mismatch\n");
+ goto error_hs2;
+ }
+
+ /* Setup the CCM nonce */
+ memset(&ccm_n.sfn, 0, sizeof(ccm_n.sfn)); /* Per WUSB1.0[6.5.2] */
+ memcpy(ccm_n.tkid, &tkid_le, sizeof(ccm_n.tkid));
+ ccm_n.src_addr = wusbhc->uwb_rc->uwb_dev.dev_addr;
+ ccm_n.dest_addr.data[0] = wusb_dev->addr;
+ ccm_n.dest_addr.data[1] = 0;
+
+ /* Derive the KCK and PTK from CK, the CCM, H and D nonces */
+ memcpy(keydvt_in.hnonce, hs[0].nonce, sizeof(keydvt_in.hnonce));
+ memcpy(keydvt_in.dnonce, hs[1].nonce, sizeof(keydvt_in.dnonce));
+ result = wusb_key_derive(&keydvt_out, ck->data, &ccm_n, &keydvt_in);
+ if (result < 0) {
+ dev_err(dev, "Handshake2 failed: cannot derive keys: %d\n",
+ result);
+ goto error_hs2;
+ }
+ d_printf(2, dev, "KCK:\n");
+ d_dump(2, dev, keydvt_out.kck, sizeof(keydvt_out.kck));
+ d_printf(2, dev, "PTK:\n");
+ d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
+
+ /* Compute MIC and verify it */
+ result = wusb_oob_mic(mic, keydvt_out.kck, &ccm_n, &hs[1]);
+ if (result < 0) {
+ dev_err(dev, "Handshake2 failed: cannot compute MIC: %d\n",
+ result);
+ goto error_hs2;
+ }
+
+ d_printf(2, dev, "MIC:\n");
+ d_dump(2, dev, mic, sizeof(mic));
+ if (memcmp(hs[1].MIC, mic, sizeof(hs[1].MIC))) {
+ dev_err(dev, "Handshake2 failed: MIC mismatch\n");
+ goto error_hs2;
+ }
+
+ /* Send Handshake3 */
+ hs[2].bMessageNumber = 3;
+ hs[2].bStatus = 0;
+ memcpy(hs[2].tTKID, &tkid_le, sizeof(hs[2].tTKID));
+ hs[2].bReserved = 0;
+ memcpy(hs[2].CDID, &wusb_dev->cdid, sizeof(hs[2].CDID));
+ memcpy(hs[2].nonce, hs[0].nonce, sizeof(hs[2].nonce));
+ result = wusb_oob_mic(hs[2].MIC, keydvt_out.kck, &ccm_n, &hs[2]);
+ if (result < 0) {
+ dev_err(dev, "Handshake3 failed: cannot compute MIC: %d\n",
+ result);
+ goto error_hs2;
+ }
+
+ d_printf(1, dev, "I: sending hs3:\n");
+ hs_printk(2, dev, &hs[2]);
+
+ result = usb_control_msg(
+ usb_dev, usb_sndctrlpipe(usb_dev, 0),
+ USB_REQ_SET_HANDSHAKE,
+ USB_DIR_OUT | USB_TYPE_STANDARD | USB_RECIP_DEVICE,
+ 3, 0, &hs[2], sizeof(hs[2]), 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "Handshake3: request failed: %d\n", result);
+ goto error_hs3;
+ }
+
+ d_printf(1, dev, "I: turning on encryption on host for device\n");
+ d_dump(2, dev, keydvt_out.ptk, sizeof(keydvt_out.ptk));
+ result = wusbhc->set_ptk(wusbhc, wusb_dev->port_idx, tkid,
+ keydvt_out.ptk, sizeof(keydvt_out.ptk));
+ if (result < 0)
+ goto error_wusbhc_set_ptk;
+
+ d_printf(1, dev, "I: setting a GTK\n");
+ result = wusb_dev_set_gtk(wusbhc, wusb_dev);
+ if (result < 0) {
+ dev_err(dev, "Set GTK for device: request failed: %d\n",
+ result);
+ goto error_wusbhc_set_gtk;
+ }
+
+ /* Update the device's address from unauth to auth */
+ if (usb_dev->authenticated == 0) {
+ d_printf(1, dev, "I: updating addres to auth from non-auth\n");
+ result = wusb_dev_update_address(wusbhc, wusb_dev);
+ if (result < 0)
+ goto error_dev_update_address;
+ }
+ result = 0;
+ d_printf(1, dev, "I: 4way handshke done, device authenticated\n");
+
+error_dev_update_address:
+error_wusbhc_set_gtk:
+error_wusbhc_set_ptk:
+error_hs3:
+error_hs2:
+error_hs1:
+ memset(hs, 0, 3*sizeof(hs[0]));
+ memset(&keydvt_out, 0, sizeof(keydvt_out));
+ memset(&keydvt_in, 0, sizeof(keydvt_in));
+ memset(&ccm_n, 0, sizeof(ccm_n));
+ memset(mic, 0, sizeof(mic));
+ if (result < 0) {
+ /* error path */
+ wusb_dev_set_encryption(usb_dev, 0);
+ }
+error_dev_set_encryption:
+ kfree(hs);
+error_kzalloc:
+ return result;
+}
+
+/*
+ * Once all connected and authenticated devices have received the new
+ * GTK, switch the host to using it.
+ */
+static void wusbhc_gtk_rekey_done_work(struct work_struct *work)
+{
+ struct wusbhc *wusbhc = container_of(work, struct wusbhc, gtk_rekey_done_work);
+ size_t key_size = sizeof(wusbhc->gtk.data);
+
+ mutex_lock(&wusbhc->mutex);
+
+ if (--wusbhc->pending_set_gtks == 0)
+ wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid, &wusbhc->gtk.descr.bKeyData, key_size);
+
+ mutex_unlock(&wusbhc->mutex);
+}
+
+static void wusbhc_set_gtk_callback(struct urb *urb)
+{
+ struct wusbhc *wusbhc = urb->context;
+
+ queue_work(wusbd, &wusbhc->gtk_rekey_done_work);
+}
+
+/**
+ * wusbhc_gtk_rekey - generate and distribute a new GTK
+ * @wusbhc: the WUSB host controller
+ *
+ * Generate a new GTK and distribute it to all connected and
+ * authenticated devices. When all devices have the new GTK, the host
+ * starts using it.
+ *
+ * This must be called after every device disconnect (see [WUSB]
+ * section 6.2.11.2).
+ */
+void wusbhc_gtk_rekey(struct wusbhc *wusbhc)
+{
+ static const size_t key_size = sizeof(wusbhc->gtk.data);
+ int p;
+
+ wusbhc_generate_gtk(wusbhc);
+
+ for (p = 0; p < wusbhc->ports_max; p++) {
+ struct wusb_dev *wusb_dev;
+
+ wusb_dev = wusbhc->port[p].wusb_dev;
+ if (!wusb_dev || !wusb_dev->usb_dev | !wusb_dev->usb_dev->authenticated)
+ continue;
+
+ usb_fill_control_urb(wusb_dev->set_gtk_urb, wusb_dev->usb_dev,
+ usb_sndctrlpipe(wusb_dev->usb_dev, 0),
+ (void *)wusb_dev->set_gtk_req,
+ &wusbhc->gtk.descr, wusbhc->gtk.descr.bLength,
+ wusbhc_set_gtk_callback, wusbhc);
+ if (usb_submit_urb(wusb_dev->set_gtk_urb, GFP_KERNEL) == 0)
+ wusbhc->pending_set_gtks++;
+ }
+ if (wusbhc->pending_set_gtks == 0)
+ wusbhc->set_gtk(wusbhc, wusbhc->gtk_tkid, &wusbhc->gtk.descr.bKeyData, key_size);
+}
--- /dev/null
+/*
+ * Wire Adapter Host Controller Driver
+ * Common items to HWA and DWA based HCDs
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+#include "wusbhc.h"
+#include "wa-hc.h"
+
+/**
+ * Assumes
+ *
+ * wa->usb_dev and wa->usb_iface initialized and refcounted,
+ * wa->wa_descr initialized.
+ */
+int wa_create(struct wahc *wa, struct usb_interface *iface)
+{
+ int result;
+ struct device *dev = &iface->dev;
+
+ result = wa_rpipes_create(wa);
+ if (result < 0)
+ goto error_rpipes_create;
+ /* Fill up Data Transfer EP pointers */
+ wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
+ wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
+ wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
+ wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
+ if (wa->xfer_result == NULL)
+ goto error_xfer_result_alloc;
+ result = wa_nep_create(wa, iface);
+ if (result < 0) {
+ dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
+ result);
+ goto error_nep_create;
+ }
+ return 0;
+
+error_nep_create:
+ kfree(wa->xfer_result);
+error_xfer_result_alloc:
+ wa_rpipes_destroy(wa);
+error_rpipes_create:
+ return result;
+}
+EXPORT_SYMBOL_GPL(wa_create);
+
+
+void __wa_destroy(struct wahc *wa)
+{
+ if (wa->dti_urb) {
+ usb_kill_urb(wa->dti_urb);
+ usb_put_urb(wa->dti_urb);
+ usb_kill_urb(wa->buf_in_urb);
+ usb_put_urb(wa->buf_in_urb);
+ }
+ kfree(wa->xfer_result);
+ wa_nep_destroy(wa);
+ wa_rpipes_destroy(wa);
+}
+EXPORT_SYMBOL_GPL(__wa_destroy);
+
+/**
+ * wa_reset_all - reset the WA device
+ * @wa: the WA to be reset
+ *
+ * For HWAs the radio controller and all other PALs are also reset.
+ */
+void wa_reset_all(struct wahc *wa)
+{
+ /* FIXME: assuming HWA. */
+ wusbhc_reset_all(wa->wusb);
+}
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * HWA Host Controller Driver
+ * Wire Adapter Control/Data Streaming Iface (WUSB1.0[8])
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver implements a USB Host Controller (struct usb_hcd) for a
+ * Wireless USB Host Controller based on the Wireless USB 1.0
+ * Host-Wire-Adapter specification (in layman terms, a USB-dongle that
+ * implements a Wireless USB host).
+ *
+ * Check out the Design-overview.txt file in the source documentation
+ * for other details on the implementation.
+ *
+ * Main blocks:
+ *
+ * driver glue with the driver API, workqueue daemon
+ *
+ * lc RC instance life cycle management (create, destroy...)
+ *
+ * hcd glue with the USB API Host Controller Interface API.
+ *
+ * nep Notification EndPoint managent: collect notifications
+ * and queue them with the workqueue daemon.
+ *
+ * Handle notifications as coming from the NEP. Sends them
+ * off others to their respective modules (eg: connect,
+ * disconnect and reset go to devconnect).
+ *
+ * rpipe Remote Pipe management; rpipe is what we use to write
+ * to an endpoint on a WUSB device that is connected to a
+ * HWA RC.
+ *
+ * xfer Transfer managment -- this is all the code that gets a
+ * buffer and pushes it to a device (or viceversa). *
+ *
+ * Some day a lot of this code will be shared between this driver and
+ * the drivers for DWA (xfer, rpipe).
+ *
+ * All starts at driver.c:hwahc_probe(), when one of this guys is
+ * connected. hwahc_disconnect() stops it.
+ *
+ * During operation, the main driver is devices connecting or
+ * disconnecting. They cause the HWA RC to send notifications into
+ * nep.c:hwahc_nep_cb() that will dispatch them to
+ * notif.c:wa_notif_dispatch(). From there they will fan to cause
+ * device connects, disconnects, etc.
+ *
+ * Note much of the activity is difficult to follow. For example a
+ * device connect goes to devconnect, which will cause the "fake" root
+ * hub port to show a connect and stop there. Then khubd will notice
+ * and call into the rh.c:hwahc_rc_port_reset() code to authenticate
+ * the device (and this might require user intervention) and enable
+ * the port.
+ *
+ * We also have a timer workqueue going from devconnect.c that
+ * schedules in hwahc_devconnect_create().
+ *
+ * The rest of the traffic is in the usual entry points of a USB HCD,
+ * which are hooked up in driver.c:hwahc_rc_driver, and defined in
+ * hcd.c.
+ */
+
+#ifndef __HWAHC_INTERNAL_H__
+#define __HWAHC_INTERNAL_H__
+
+#include <linux/completion.h>
+#include <linux/usb.h>
+#include <linux/mutex.h>
+#include <linux/spinlock.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+
+struct wusbhc;
+struct wahc;
+extern void wa_urb_enqueue_run(struct work_struct *ws);
+
+/**
+ * RPipe instance
+ *
+ * @descr's fields are kept in LE, as we need to send it back and
+ * forth.
+ *
+ * @wa is referenced when set
+ *
+ * @segs_available is the number of requests segments that still can
+ * be submitted to the controller without overloading
+ * it. It is initialized to descr->wRequests when
+ * aiming.
+ *
+ * A rpipe supports a max of descr->wRequests at the same time; before
+ * submitting seg_lock has to be taken. If segs_avail > 0, then we can
+ * submit; if not, we have to queue them.
+ */
+struct wa_rpipe {
+ struct kref refcnt;
+ struct usb_rpipe_descriptor descr;
+ struct usb_host_endpoint *ep;
+ struct wahc *wa;
+ spinlock_t seg_lock;
+ struct list_head seg_list;
+ atomic_t segs_available;
+ u8 buffer[1]; /* For reads/writes on USB */
+};
+
+
+/**
+ * Instance of a HWA Host Controller
+ *
+ * Except where a more specific lock/mutex applies or atomic, all
+ * fields protected by @mutex.
+ *
+ * @wa_descr Can be accessed without locking because it is in
+ * the same area where the device descriptors were
+ * read, so it is guaranteed to exist umodified while
+ * the device exists.
+ *
+ * Endianess has been converted to CPU's.
+ *
+ * @nep_* can be accessed without locking as its processing is
+ * serialized; we submit a NEP URB and it comes to
+ * hwahc_nep_cb(), which won't issue another URB until it is
+ * done processing it.
+ *
+ * @xfer_list:
+ *
+ * List of active transfers to verify existence from a xfer id
+ * gotten from the xfer result message. Can't use urb->list because
+ * it goes by endpoint, and we don't know the endpoint at the time
+ * when we get the xfer result message. We can't really rely on the
+ * pointer (will have to change for 64 bits) as the xfer id is 32 bits.
+ *
+ * @xfer_delayed_list: List of transfers that need to be started
+ * (with a workqueue, because they were
+ * submitted from an atomic context).
+ *
+ * FIXME: this needs to be layered up: a wusbhc layer (for sharing
+ * comonalities with WHCI), a wa layer (for sharing
+ * comonalities with DWA-RC).
+ */
+struct wahc {
+ struct usb_device *usb_dev;
+ struct usb_interface *usb_iface;
+
+ /* HC to deliver notifications */
+ union {
+ struct wusbhc *wusb;
+ struct dwahc *dwa;
+ };
+
+ const struct usb_endpoint_descriptor *dto_epd, *dti_epd;
+ const struct usb_wa_descriptor *wa_descr;
+
+ struct urb *nep_urb; /* Notification EndPoint [lockless] */
+ struct edc nep_edc;
+ void *nep_buffer;
+ size_t nep_buffer_size;
+
+ atomic_t notifs_queued;
+
+ u16 rpipes;
+ unsigned long *rpipe_bm; /* rpipe usage bitmap */
+ spinlock_t rpipe_bm_lock; /* protect rpipe_bm */
+ struct mutex rpipe_mutex; /* assigning resources to endpoints */
+
+ struct urb *dti_urb; /* URB for reading xfer results */
+ struct urb *buf_in_urb; /* URB for reading data in */
+ struct edc dti_edc; /* DTI error density counter */
+ struct wa_xfer_result *xfer_result; /* real size = dti_ep maxpktsize */
+ size_t xfer_result_size;
+
+ s32 status; /* For reading status */
+
+ struct list_head xfer_list;
+ struct list_head xfer_delayed_list;
+ spinlock_t xfer_list_lock;
+ struct work_struct xfer_work;
+ atomic_t xfer_id_count;
+};
+
+
+extern int wa_create(struct wahc *wa, struct usb_interface *iface);
+extern void __wa_destroy(struct wahc *wa);
+void wa_reset_all(struct wahc *wa);
+
+
+/* Miscellaneous constants */
+enum {
+ /** Max number of EPROTO errors we tolerate on the NEP in a
+ * period of time */
+ HWAHC_EPROTO_MAX = 16,
+ /** Period of time for EPROTO errors (in jiffies) */
+ HWAHC_EPROTO_PERIOD = 4 * HZ,
+};
+
+
+/* Notification endpoint handling */
+extern int wa_nep_create(struct wahc *, struct usb_interface *);
+extern void wa_nep_destroy(struct wahc *);
+
+static inline int wa_nep_arm(struct wahc *wa, gfp_t gfp_mask)
+{
+ struct urb *urb = wa->nep_urb;
+ urb->transfer_buffer = wa->nep_buffer;
+ urb->transfer_buffer_length = wa->nep_buffer_size;
+ return usb_submit_urb(urb, gfp_mask);
+}
+
+static inline void wa_nep_disarm(struct wahc *wa)
+{
+ usb_kill_urb(wa->nep_urb);
+}
+
+
+/* RPipes */
+static inline void wa_rpipe_init(struct wahc *wa)
+{
+ spin_lock_init(&wa->rpipe_bm_lock);
+ mutex_init(&wa->rpipe_mutex);
+}
+
+static inline void wa_init(struct wahc *wa)
+{
+ edc_init(&wa->nep_edc);
+ atomic_set(&wa->notifs_queued, 0);
+ wa_rpipe_init(wa);
+ edc_init(&wa->dti_edc);
+ INIT_LIST_HEAD(&wa->xfer_list);
+ INIT_LIST_HEAD(&wa->xfer_delayed_list);
+ spin_lock_init(&wa->xfer_list_lock);
+ INIT_WORK(&wa->xfer_work, wa_urb_enqueue_run);
+ atomic_set(&wa->xfer_id_count, 1);
+}
+
+/**
+ * Destroy a pipe (when refcount drops to zero)
+ *
+ * Assumes it has been moved to the "QUIESCING" state.
+ */
+struct wa_xfer;
+extern void rpipe_destroy(struct kref *_rpipe);
+static inline
+void __rpipe_get(struct wa_rpipe *rpipe)
+{
+ kref_get(&rpipe->refcnt);
+}
+extern int rpipe_get_by_ep(struct wahc *, struct usb_host_endpoint *,
+ struct urb *, gfp_t);
+static inline void rpipe_put(struct wa_rpipe *rpipe)
+{
+ kref_put(&rpipe->refcnt, rpipe_destroy);
+
+}
+extern void rpipe_ep_disable(struct wahc *, struct usb_host_endpoint *);
+extern int wa_rpipes_create(struct wahc *);
+extern void wa_rpipes_destroy(struct wahc *);
+static inline void rpipe_avail_dec(struct wa_rpipe *rpipe)
+{
+ atomic_dec(&rpipe->segs_available);
+}
+
+/**
+ * Returns true if the rpipe is ready to submit more segments.
+ */
+static inline int rpipe_avail_inc(struct wa_rpipe *rpipe)
+{
+ return atomic_inc_return(&rpipe->segs_available) > 0
+ && !list_empty(&rpipe->seg_list);
+}
+
+
+/* Transferring data */
+extern int wa_urb_enqueue(struct wahc *, struct usb_host_endpoint *,
+ struct urb *, gfp_t);
+extern int wa_urb_dequeue(struct wahc *, struct urb *);
+extern void wa_handle_notif_xfer(struct wahc *, struct wa_notif_hdr *);
+
+
+/* Misc
+ *
+ * FIXME: Refcounting for the actual @hwahc object is not correct; I
+ * mean, this should be refcounting on the HCD underneath, but
+ * it is not. In any case, the semantics for HCD refcounting
+ * are *weird*...on refcount reaching zero it just frees
+ * it...no RC specific function is called...unless I miss
+ * something.
+ *
+ * FIXME: has to go away in favour of an 'struct' hcd based sollution
+ */
+static inline struct wahc *wa_get(struct wahc *wa)
+{
+ usb_get_intf(wa->usb_iface);
+ return wa;
+}
+
+static inline void wa_put(struct wahc *wa)
+{
+ usb_put_intf(wa->usb_iface);
+}
+
+
+static inline int __wa_feature(struct wahc *wa, unsigned op, u16 feature)
+{
+ return usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ op ? USB_REQ_SET_FEATURE : USB_REQ_CLEAR_FEATURE,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ feature,
+ wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ NULL, 0, 1000 /* FIXME: arbitrary */);
+}
+
+
+static inline int __wa_set_feature(struct wahc *wa, u16 feature)
+{
+ return __wa_feature(wa, 1, feature);
+}
+
+
+static inline int __wa_clear_feature(struct wahc *wa, u16 feature)
+{
+ return __wa_feature(wa, 0, feature);
+}
+
+
+/**
+ * Return the status of a Wire Adapter
+ *
+ * @wa: Wire Adapter instance
+ * @returns < 0 errno code on error, or status bitmap as described
+ * in WUSB1.0[8.3.1.6].
+ *
+ * NOTE: need malloc, some arches don't take USB from the stack
+ */
+static inline
+s32 __wa_get_status(struct wahc *wa)
+{
+ s32 result;
+ result = usb_control_msg(
+ wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+ USB_REQ_GET_STATUS,
+ USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ &wa->status, sizeof(wa->status),
+ 1000 /* FIXME: arbitrary */);
+ if (result >= 0)
+ result = wa->status;
+ return result;
+}
+
+
+/**
+ * Waits until the Wire Adapter's status matches @mask/@value
+ *
+ * @wa: Wire Adapter instance.
+ * @returns < 0 errno code on error, otherwise status.
+ *
+ * Loop until the WAs status matches the mask and value (status & mask
+ * == value). Timeout if it doesn't happen.
+ *
+ * FIXME: is there an official specification on how long status
+ * changes can take?
+ */
+static inline s32 __wa_wait_status(struct wahc *wa, u32 mask, u32 value)
+{
+ s32 result;
+ unsigned loops = 10;
+ do {
+ msleep(50);
+ result = __wa_get_status(wa);
+ if ((result & mask) == value)
+ break;
+ if (loops-- == 0) {
+ result = -ETIMEDOUT;
+ break;
+ }
+ } while (result >= 0);
+ return result;
+}
+
+
+/** Command @hwahc to stop, @returns 0 if ok, < 0 errno code on error */
+static inline int __wa_stop(struct wahc *wa)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+
+ result = __wa_clear_feature(wa, WA_ENABLE);
+ if (result < 0 && result != -ENODEV) {
+ dev_err(dev, "error commanding HC to stop: %d\n", result);
+ goto out;
+ }
+ result = __wa_wait_status(wa, WA_ENABLE, 0);
+ if (result < 0 && result != -ENODEV)
+ dev_err(dev, "error waiting for HC to stop: %d\n", result);
+out:
+ return 0;
+}
+
+
+#endif /* #ifndef __HWAHC_INTERNAL_H__ */
--- /dev/null
+/*
+ * WUSB Wire Adapter: Control/Data Streaming Interface (WUSB[8])
+ * Notification EndPoint support
+ *
+ * Copyright (C) 2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This part takes care of getting the notification from the hw
+ * only and dispatching through wusbwad into
+ * wa_notif_dispatch. Handling is done there.
+ *
+ * WA notifications are limited in size; most of them are three or
+ * four bytes long, and the longest is the HWA Device Notification,
+ * which would not exceed 38 bytes (DNs are limited in payload to 32
+ * bytes plus 3 bytes header (WUSB1.0[7.6p2]), plus 3 bytes HWA
+ * header (WUSB1.0[8.5.4.2]).
+ *
+ * It is not clear if more than one Device Notification can be packed
+ * in a HWA Notification, I assume no because of the wording in
+ * WUSB1.0[8.5.4.2]. In any case, the bigger any notification could
+ * get is 256 bytes (as the bLength field is a byte).
+ *
+ * So what we do is we have this buffer and read into it; when a
+ * notification arrives we schedule work to a specific, single thread
+ * workqueue (so notifications are serialized) and copy the
+ * notification data. After scheduling the work, we rearm the read from
+ * the notification endpoint.
+ *
+ * Entry points here are:
+ *
+ * wa_nep_[create|destroy]() To initialize/release this subsystem
+ *
+ * wa_nep_cb() Callback for the notification
+ * endpoint; when data is ready, this
+ * does the dispatching.
+ */
+#include <linux/workqueue.h>
+#include <linux/ctype.h>
+#include <linux/uwb/debug.h>
+#include "wa-hc.h"
+#include "wusbhc.h"
+
+/* Structure for queueing notifications to the workqueue */
+struct wa_notif_work {
+ struct work_struct work;
+ struct wahc *wa;
+ size_t size;
+ u8 data[];
+};
+
+/*
+ * Process incoming notifications from the WA's Notification EndPoint
+ * [the wuswad daemon, basically]
+ *
+ * @_nw: Pointer to a descriptor which has the pointer to the
+ * @wa, the size of the buffer and the work queue
+ * structure (so we can free all when done).
+ * @returns 0 if ok, < 0 errno code on error.
+ *
+ * All notifications follow the same format; they need to start with a
+ * 'struct wa_notif_hdr' header, so it is easy to parse through
+ * them. We just break the buffer in individual notifications (the
+ * standard doesn't say if it can be done or is forbidden, so we are
+ * cautious) and dispatch each.
+ *
+ * So the handling layers are is:
+ *
+ * WA specific notification (from NEP)
+ * Device Notification Received -> wa_handle_notif_dn()
+ * WUSB Device notification generic handling
+ * BPST Adjustment -> wa_handle_notif_bpst_adj()
+ * ... -> ...
+ *
+ * @wa has to be referenced
+ */
+static void wa_notif_dispatch(struct work_struct *ws)
+{
+ void *itr;
+ u8 missing = 0;
+ struct wa_notif_work *nw = container_of(ws, struct wa_notif_work, work);
+ struct wahc *wa = nw->wa;
+ struct wa_notif_hdr *notif_hdr;
+ size_t size;
+
+ struct device *dev = &wa->usb_iface->dev;
+
+#if 0
+ /* FIXME: need to check for this??? */
+ if (usb_hcd->state == HC_STATE_QUIESCING) /* Going down? */
+ goto out; /* screw it */
+#endif
+ atomic_dec(&wa->notifs_queued); /* Throttling ctl */
+ dev = &wa->usb_iface->dev;
+ size = nw->size;
+ itr = nw->data;
+
+ while (size) {
+ if (size < sizeof(*notif_hdr)) {
+ missing = sizeof(*notif_hdr) - size;
+ goto exhausted_buffer;
+ }
+ notif_hdr = itr;
+ if (size < notif_hdr->bLength)
+ goto exhausted_buffer;
+ itr += notif_hdr->bLength;
+ size -= notif_hdr->bLength;
+ /* Dispatch the notification [don't use itr or size!] */
+ switch (notif_hdr->bNotifyType) {
+ case HWA_NOTIF_DN: {
+ struct hwa_notif_dn *hwa_dn;
+ hwa_dn = container_of(notif_hdr, struct hwa_notif_dn,
+ hdr);
+ wusbhc_handle_dn(wa->wusb, hwa_dn->bSourceDeviceAddr,
+ hwa_dn->dndata,
+ notif_hdr->bLength - sizeof(*hwa_dn));
+ break;
+ }
+ case WA_NOTIF_TRANSFER:
+ wa_handle_notif_xfer(wa, notif_hdr);
+ break;
+ case DWA_NOTIF_RWAKE:
+ case DWA_NOTIF_PORTSTATUS:
+ case HWA_NOTIF_BPST_ADJ:
+ /* FIXME: unimplemented WA NOTIFs */
+ /* fallthru */
+ default:
+ if (printk_ratelimit()) {
+ dev_err(dev, "HWA: unknown notification 0x%x, "
+ "%zu bytes; discarding\n",
+ notif_hdr->bNotifyType,
+ (size_t)notif_hdr->bLength);
+ dump_bytes(dev, notif_hdr, 16);
+ }
+ break;
+ }
+ }
+out:
+ wa_put(wa);
+ kfree(nw);
+ return;
+
+ /* THIS SHOULD NOT HAPPEN
+ *
+ * Buffer exahusted with partial data remaining; just warn and
+ * discard the data, as this should not happen.
+ */
+exhausted_buffer:
+ if (!printk_ratelimit())
+ goto out;
+ dev_warn(dev, "HWA: device sent short notification, "
+ "%d bytes missing; discarding %d bytes.\n",
+ missing, (int)size);
+ dump_bytes(dev, itr, size);
+ goto out;
+}
+
+/*
+ * Deliver incoming WA notifications to the wusbwa workqueue
+ *
+ * @wa: Pointer the Wire Adapter Controller Data Streaming
+ * instance (part of an 'struct usb_hcd').
+ * @size: Size of the received buffer
+ * @returns 0 if ok, < 0 errno code on error.
+ *
+ * The input buffer is @wa->nep_buffer, with @size bytes
+ * (guaranteed to fit in the allocated space,
+ * @wa->nep_buffer_size).
+ */
+static int wa_nep_queue(struct wahc *wa, size_t size)
+{
+ int result = 0;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_notif_work *nw;
+
+ /* dev_fnstart(dev, "(wa %p, size %zu)\n", wa, size); */
+ BUG_ON(size > wa->nep_buffer_size);
+ if (size == 0)
+ goto out;
+ if (atomic_read(&wa->notifs_queued) > 200) {
+ if (printk_ratelimit())
+ dev_err(dev, "Too many notifications queued, "
+ "throttling back\n");
+ goto out;
+ }
+ nw = kzalloc(sizeof(*nw) + size, GFP_ATOMIC);
+ if (nw == NULL) {
+ if (printk_ratelimit())
+ dev_err(dev, "No memory to queue notification\n");
+ goto out;
+ }
+ INIT_WORK(&nw->work, wa_notif_dispatch);
+ nw->wa = wa_get(wa);
+ nw->size = size;
+ memcpy(nw->data, wa->nep_buffer, size);
+ atomic_inc(&wa->notifs_queued); /* Throttling ctl */
+ queue_work(wusbd, &nw->work);
+out:
+ /* dev_fnend(dev, "(wa %p, size %zu) = result\n", wa, size, result); */
+ return result;
+}
+
+/*
+ * Callback for the notification event endpoint
+ *
+ * Check's that everything is fine and then passes the data to be
+ * queued to the workqueue.
+ */
+static void wa_nep_cb(struct urb *urb)
+{
+ int result;
+ struct wahc *wa = urb->context;
+ struct device *dev = &wa->usb_iface->dev;
+
+ switch (result = urb->status) {
+ case 0:
+ result = wa_nep_queue(wa, urb->actual_length);
+ if (result < 0)
+ dev_err(dev, "NEP: unable to process notification(s): "
+ "%d\n", result);
+ break;
+ case -ECONNRESET: /* Not an error, but a controlled situation; */
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ case -ESHUTDOWN:
+ dev_dbg(dev, "NEP: going down %d\n", urb->status);
+ goto out;
+ default: /* On general errors, we retry unless it gets ugly */
+ if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "NEP: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ goto out;
+ }
+ dev_err(dev, "NEP: URB error %d\n", urb->status);
+ }
+ result = wa_nep_arm(wa, GFP_ATOMIC);
+ if (result < 0) {
+ dev_err(dev, "NEP: cannot submit URB: %d\n", result);
+ wa_reset_all(wa);
+ }
+out:
+ return;
+}
+
+/*
+ * Initialize @wa's notification and event's endpoint stuff
+ *
+ * This includes the allocating the read buffer, the context ID
+ * allocation bitmap, the URB and submitting the URB.
+ */
+int wa_nep_create(struct wahc *wa, struct usb_interface *iface)
+{
+ int result;
+ struct usb_endpoint_descriptor *epd;
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+ struct device *dev = &iface->dev;
+
+ edc_init(&wa->nep_edc);
+ epd = &iface->cur_altsetting->endpoint[0].desc;
+ wa->nep_buffer_size = 1024;
+ wa->nep_buffer = kmalloc(wa->nep_buffer_size, GFP_KERNEL);
+ if (wa->nep_buffer == NULL) {
+ dev_err(dev, "Unable to allocate notification's read buffer\n");
+ goto error_nep_buffer;
+ }
+ wa->nep_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (wa->nep_urb == NULL) {
+ dev_err(dev, "Unable to allocate notification URB\n");
+ goto error_urb_alloc;
+ }
+ usb_fill_int_urb(wa->nep_urb, usb_dev,
+ usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+ wa->nep_buffer, wa->nep_buffer_size,
+ wa_nep_cb, wa, epd->bInterval);
+ result = wa_nep_arm(wa, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "Cannot submit notification URB: %d\n", result);
+ goto error_nep_arm;
+ }
+ return 0;
+
+error_nep_arm:
+ usb_free_urb(wa->nep_urb);
+error_urb_alloc:
+ kfree(wa->nep_buffer);
+error_nep_buffer:
+ return -ENOMEM;
+}
+
+void wa_nep_destroy(struct wahc *wa)
+{
+ wa_nep_disarm(wa);
+ usb_free_urb(wa->nep_urb);
+ kfree(wa->nep_buffer);
+}
--- /dev/null
+/*
+ * WUSB Wire Adapter
+ * rpipe management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * RPIPE
+ *
+ * Targetted at different downstream endpoints
+ *
+ * Descriptor: use to config the remote pipe.
+ *
+ * The number of blocks could be dynamic (wBlocks in descriptor is
+ * 0)--need to schedule them then.
+ *
+ * Each bit in wa->rpipe_bm represents if an rpipe is being used or
+ * not. Rpipes are represented with a 'struct wa_rpipe' that is
+ * attached to the hcpriv member of a 'struct usb_host_endpoint'.
+ *
+ * When you need to xfer data to an endpoint, you get an rpipe for it
+ * with wa_ep_rpipe_get(), which gives you a reference to the rpipe
+ * and keeps a single one (the first one) with the endpoint. When you
+ * are done transferring, you drop that reference. At the end the
+ * rpipe is always allocated and bound to the endpoint. There it might
+ * be recycled when not used.
+ *
+ * Addresses:
+ *
+ * We use a 1:1 mapping mechanism between port address (0 based
+ * index, actually) and the address. The USB stack knows about this.
+ *
+ * USB Stack port number 4 (1 based)
+ * WUSB code port index 3 (0 based)
+ * USB Addresss 5 (2 based -- 0 is for default, 1 for root hub)
+ *
+ * Now, because we don't use the concept as default address exactly
+ * like the (wired) USB code does, we need to kind of skip it. So we
+ * never take addresses from the urb->pipe, but from the
+ * urb->dev->devnum, to make sure that we always have the right
+ * destination address.
+ */
+#include <linux/init.h>
+#include <asm/atomic.h>
+#include <linux/bitmap.h>
+#include "wusbhc.h"
+#include "wa-hc.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+static int __rpipe_get_descr(struct wahc *wa,
+ struct usb_rpipe_descriptor *descr, u16 index)
+{
+ ssize_t result;
+ struct device *dev = &wa->usb_iface->dev;
+
+ /* Get the RPIPE descriptor -- we cannot use the usb_get_descriptor()
+ * function because the arguments are different.
+ */
+ d_printf(1, dev, "rpipe %u: get descr\n", index);
+ result = usb_control_msg(
+ wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+ USB_REQ_GET_DESCRIPTOR,
+ USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+ USB_DT_RPIPE<<8, index, descr, sizeof(*descr),
+ 1000 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "rpipe %u: get descriptor failed: %d\n",
+ index, (int)result);
+ goto error;
+ }
+ if (result < sizeof(*descr)) {
+ dev_err(dev, "rpipe %u: got short descriptor "
+ "(%zd vs %zd bytes needed)\n",
+ index, result, sizeof(*descr));
+ result = -EINVAL;
+ goto error;
+ }
+ result = 0;
+
+error:
+ return result;
+}
+
+/*
+ *
+ * The descriptor is assumed to be properly initialized (ie: you got
+ * it through __rpipe_get_descr()).
+ */
+static int __rpipe_set_descr(struct wahc *wa,
+ struct usb_rpipe_descriptor *descr, u16 index)
+{
+ ssize_t result;
+ struct device *dev = &wa->usb_iface->dev;
+
+ /* we cannot use the usb_get_descriptor() function because the
+ * arguments are different.
+ */
+ d_printf(1, dev, "rpipe %u: set descr\n", index);
+ result = usb_control_msg(
+ wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ USB_REQ_SET_DESCRIPTOR,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+ USB_DT_RPIPE<<8, index, descr, sizeof(*descr),
+ HZ / 10);
+ if (result < 0) {
+ dev_err(dev, "rpipe %u: set descriptor failed: %d\n",
+ index, (int)result);
+ goto error;
+ }
+ if (result < sizeof(*descr)) {
+ dev_err(dev, "rpipe %u: sent short descriptor "
+ "(%zd vs %zd bytes required)\n",
+ index, result, sizeof(*descr));
+ result = -EINVAL;
+ goto error;
+ }
+ result = 0;
+
+error:
+ return result;
+
+}
+
+static void rpipe_init(struct wa_rpipe *rpipe)
+{
+ kref_init(&rpipe->refcnt);
+ spin_lock_init(&rpipe->seg_lock);
+ INIT_LIST_HEAD(&rpipe->seg_list);
+}
+
+static unsigned rpipe_get_idx(struct wahc *wa, unsigned rpipe_idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wa->rpipe_bm_lock, flags);
+ rpipe_idx = find_next_zero_bit(wa->rpipe_bm, wa->rpipes, rpipe_idx);
+ if (rpipe_idx < wa->rpipes)
+ set_bit(rpipe_idx, wa->rpipe_bm);
+ spin_unlock_irqrestore(&wa->rpipe_bm_lock, flags);
+
+ return rpipe_idx;
+}
+
+static void rpipe_put_idx(struct wahc *wa, unsigned rpipe_idx)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&wa->rpipe_bm_lock, flags);
+ clear_bit(rpipe_idx, wa->rpipe_bm);
+ spin_unlock_irqrestore(&wa->rpipe_bm_lock, flags);
+}
+
+void rpipe_destroy(struct kref *_rpipe)
+{
+ struct wa_rpipe *rpipe = container_of(_rpipe, struct wa_rpipe, refcnt);
+ u8 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
+ d_fnstart(1, NULL, "(rpipe %p %u)\n", rpipe, index);
+ if (rpipe->ep)
+ rpipe->ep->hcpriv = NULL;
+ rpipe_put_idx(rpipe->wa, index);
+ wa_put(rpipe->wa);
+ kfree(rpipe);
+ d_fnend(1, NULL, "(rpipe %p %u)\n", rpipe, index);
+}
+EXPORT_SYMBOL_GPL(rpipe_destroy);
+
+/*
+ * Locate an idle rpipe, create an structure for it and return it
+ *
+ * @wa is referenced and unlocked
+ * @crs enum rpipe_attr, required endpoint characteristics
+ *
+ * The rpipe can be used only sequentially (not in parallel).
+ *
+ * The rpipe is moved into the "ready" state.
+ */
+static int rpipe_get_idle(struct wa_rpipe **prpipe, struct wahc *wa, u8 crs,
+ gfp_t gfp)
+{
+ int result;
+ unsigned rpipe_idx;
+ struct wa_rpipe *rpipe;
+ struct device *dev = &wa->usb_iface->dev;
+
+ d_fnstart(3, dev, "(wa %p crs 0x%02x)\n", wa, crs);
+ rpipe = kzalloc(sizeof(*rpipe), gfp);
+ if (rpipe == NULL)
+ return -ENOMEM;
+ rpipe_init(rpipe);
+
+ /* Look for an idle pipe */
+ for (rpipe_idx = 0; rpipe_idx < wa->rpipes; rpipe_idx++) {
+ rpipe_idx = rpipe_get_idx(wa, rpipe_idx);
+ if (rpipe_idx >= wa->rpipes) /* no more pipes :( */
+ break;
+ result = __rpipe_get_descr(wa, &rpipe->descr, rpipe_idx);
+ if (result < 0)
+ dev_err(dev, "Can't get descriptor for rpipe %u: %d\n",
+ rpipe_idx, result);
+ else if ((rpipe->descr.bmCharacteristics & crs) != 0)
+ goto found;
+ rpipe_put_idx(wa, rpipe_idx);
+ }
+ *prpipe = NULL;
+ kfree(rpipe);
+ d_fnend(3, dev, "(wa %p crs 0x%02x) = -ENXIO\n", wa, crs);
+ return -ENXIO;
+
+found:
+ set_bit(rpipe_idx, wa->rpipe_bm);
+ rpipe->wa = wa_get(wa);
+ *prpipe = rpipe;
+ d_fnstart(3, dev, "(wa %p crs 0x%02x) = 0\n", wa, crs);
+ return 0;
+}
+
+static int __rpipe_reset(struct wahc *wa, unsigned index)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+
+ d_printf(1, dev, "rpipe %u: reset\n", index);
+ result = usb_control_msg(
+ wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
+ USB_REQ_RPIPE_RESET,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+ 0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0)
+ dev_err(dev, "rpipe %u: reset failed: %d\n",
+ index, result);
+ return result;
+}
+
+/*
+ * Fake companion descriptor for ep0
+ *
+ * See WUSB1.0[7.4.4], most of this is zero for bulk/int/ctl
+ */
+static struct usb_wireless_ep_comp_descriptor epc0 = {
+ .bLength = sizeof(epc0),
+ .bDescriptorType = USB_DT_WIRELESS_ENDPOINT_COMP,
+/* .bMaxBurst = 1, */
+ .bMaxSequence = 31,
+};
+
+/*
+ * Look for EP companion descriptor
+ *
+ * Get there, look for Inara in the endpoint's extra descriptors
+ */
+static struct usb_wireless_ep_comp_descriptor *rpipe_epc_find(
+ struct device *dev, struct usb_host_endpoint *ep)
+{
+ void *itr;
+ size_t itr_size;
+ struct usb_descriptor_header *hdr;
+ struct usb_wireless_ep_comp_descriptor *epcd;
+
+ d_fnstart(3, dev, "(ep %p)\n", ep);
+ if (ep->desc.bEndpointAddress == 0) {
+ epcd = &epc0;
+ goto out;
+ }
+ itr = ep->extra;
+ itr_size = ep->extralen;
+ epcd = NULL;
+ while (itr_size > 0) {
+ if (itr_size < sizeof(*hdr)) {
+ dev_err(dev, "HW Bug? ep 0x%02x: extra descriptors "
+ "at offset %zu: only %zu bytes left\n",
+ ep->desc.bEndpointAddress,
+ itr - (void *) ep->extra, itr_size);
+ break;
+ }
+ hdr = itr;
+ if (hdr->bDescriptorType == USB_DT_WIRELESS_ENDPOINT_COMP) {
+ epcd = itr;
+ break;
+ }
+ if (hdr->bLength > itr_size) {
+ dev_err(dev, "HW Bug? ep 0x%02x: extra descriptor "
+ "at offset %zu (type 0x%02x) "
+ "length %d but only %zu bytes left\n",
+ ep->desc.bEndpointAddress,
+ itr - (void *) ep->extra, hdr->bDescriptorType,
+ hdr->bLength, itr_size);
+ break;
+ }
+ itr += hdr->bLength;
+ itr_size -= hdr->bDescriptorType;
+ }
+out:
+ d_fnend(3, dev, "(ep %p) = %p\n", ep, epcd);
+ return epcd;
+}
+
+/*
+ * Aim an rpipe to its device & endpoint destination
+ *
+ * Make sure we change the address to unauthenticathed if the device
+ * is WUSB and it is not authenticated.
+ */
+static int rpipe_aim(struct wa_rpipe *rpipe, struct wahc *wa,
+ struct usb_host_endpoint *ep, struct urb *urb, gfp_t gfp)
+{
+ int result = -ENOMSG; /* better code for lack of companion? */
+ struct device *dev = &wa->usb_iface->dev;
+ struct usb_device *usb_dev = urb->dev;
+ struct usb_wireless_ep_comp_descriptor *epcd;
+ u8 unauth;
+
+ d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
+ rpipe, wa, ep, urb);
+ epcd = rpipe_epc_find(dev, ep);
+ if (epcd == NULL) {
+ dev_err(dev, "ep 0x%02x: can't find companion descriptor\n",
+ ep->desc.bEndpointAddress);
+ goto error;
+ }
+ unauth = usb_dev->wusb && !usb_dev->authenticated ? 0x80 : 0;
+ __rpipe_reset(wa, le16_to_cpu(rpipe->descr.wRPipeIndex));
+ atomic_set(&rpipe->segs_available, le16_to_cpu(rpipe->descr.wRequests));
+ /* FIXME: block allocation system; request with queuing and timeout */
+ /* FIXME: compute so seg_size > ep->maxpktsize */
+ rpipe->descr.wBlocks = cpu_to_le16(16); /* given */
+ /* ep0 maxpktsize is 0x200 (WUSB1.0[4.8.1]) */
+ rpipe->descr.wMaxPacketSize = cpu_to_le16(ep->desc.wMaxPacketSize);
+ rpipe->descr.bHSHubAddress = 0; /* reserved: zero */
+ rpipe->descr.bHSHubPort = wusb_port_no_to_idx(urb->dev->portnum);
+ /* FIXME: use maximum speed as supported or recommended by device */
+ rpipe->descr.bSpeed = usb_pipeendpoint(urb->pipe) == 0 ?
+ UWB_PHY_RATE_53 : UWB_PHY_RATE_200;
+ d_printf(2, dev, "addr %u (0x%02x) rpipe #%u ep# %u speed %d\n",
+ urb->dev->devnum, urb->dev->devnum | unauth,
+ le16_to_cpu(rpipe->descr.wRPipeIndex),
+ usb_pipeendpoint(urb->pipe), rpipe->descr.bSpeed);
+ /* see security.c:wusb_update_address() */
+ if (unlikely(urb->dev->devnum == 0x80))
+ rpipe->descr.bDeviceAddress = 0;
+ else
+ rpipe->descr.bDeviceAddress = urb->dev->devnum | unauth;
+ rpipe->descr.bEndpointAddress = ep->desc.bEndpointAddress;
+ /* FIXME: bDataSequence */
+ rpipe->descr.bDataSequence = 0;
+ /* FIXME: dwCurrentWindow */
+ rpipe->descr.dwCurrentWindow = cpu_to_le32(1);
+ /* FIXME: bMaxDataSequence */
+ rpipe->descr.bMaxDataSequence = epcd->bMaxSequence - 1;
+ rpipe->descr.bInterval = ep->desc.bInterval;
+ /* FIXME: bOverTheAirInterval */
+ rpipe->descr.bOverTheAirInterval = 0; /* 0 if not isoc */
+ /* FIXME: xmit power & preamble blah blah */
+ rpipe->descr.bmAttribute = ep->desc.bmAttributes & 0x03;
+ /* rpipe->descr.bmCharacteristics RO */
+ /* FIXME: bmRetryOptions */
+ rpipe->descr.bmRetryOptions = 15;
+ /* FIXME: use for assessing link quality? */
+ rpipe->descr.wNumTransactionErrors = 0;
+ result = __rpipe_set_descr(wa, &rpipe->descr,
+ le16_to_cpu(rpipe->descr.wRPipeIndex));
+ if (result < 0) {
+ dev_err(dev, "Cannot aim rpipe: %d\n", result);
+ goto error;
+ }
+ result = 0;
+error:
+ d_fnend(3, dev, "(rpipe %p wa %p ep %p urb %p) = %d\n",
+ rpipe, wa, ep, urb, result);
+ return result;
+}
+
+/*
+ * Check an aimed rpipe to make sure it points to where we want
+ *
+ * We use bit 19 of the Linux USB pipe bitmap for unauth vs auth
+ * space; when it is like that, we or 0x80 to make an unauth address.
+ */
+static int rpipe_check_aim(const struct wa_rpipe *rpipe, const struct wahc *wa,
+ const struct usb_host_endpoint *ep,
+ const struct urb *urb, gfp_t gfp)
+{
+ int result = 0; /* better code for lack of companion? */
+ struct device *dev = &wa->usb_iface->dev;
+ struct usb_device *usb_dev = urb->dev;
+ u8 unauth = (usb_dev->wusb && !usb_dev->authenticated) ? 0x80 : 0;
+ u8 portnum = wusb_port_no_to_idx(urb->dev->portnum);
+
+ d_fnstart(3, dev, "(rpipe %p wa %p ep %p, urb %p)\n",
+ rpipe, wa, ep, urb);
+#define AIM_CHECK(rdf, val, text) \
+ do { \
+ if (rpipe->descr.rdf != (val)) { \
+ dev_err(dev, \
+ "rpipe aim discrepancy: " #rdf " " text "\n", \
+ rpipe->descr.rdf, (val)); \
+ result = -EINVAL; \
+ WARN_ON(1); \
+ } \
+ } while (0)
+ AIM_CHECK(wMaxPacketSize, cpu_to_le16(ep->desc.wMaxPacketSize),
+ "(%u vs %u)");
+ AIM_CHECK(bHSHubPort, portnum, "(%u vs %u)");
+ AIM_CHECK(bSpeed, usb_pipeendpoint(urb->pipe) == 0 ?
+ UWB_PHY_RATE_53 : UWB_PHY_RATE_200,
+ "(%u vs %u)");
+ AIM_CHECK(bDeviceAddress, urb->dev->devnum | unauth, "(%u vs %u)");
+ AIM_CHECK(bEndpointAddress, ep->desc.bEndpointAddress, "(%u vs %u)");
+ AIM_CHECK(bInterval, ep->desc.bInterval, "(%u vs %u)");
+ AIM_CHECK(bmAttribute, ep->desc.bmAttributes & 0x03, "(%u vs %u)");
+#undef AIM_CHECK
+ return result;
+}
+
+#ifndef CONFIG_BUG
+#define CONFIG_BUG 0
+#endif
+
+/*
+ * Make sure there is an rpipe allocated for an endpoint
+ *
+ * If already allocated, we just refcount it; if not, we get an
+ * idle one, aim it to the right location and take it.
+ *
+ * Attaches to ep->hcpriv and rpipe->ep to ep.
+ */
+int rpipe_get_by_ep(struct wahc *wa, struct usb_host_endpoint *ep,
+ struct urb *urb, gfp_t gfp)
+{
+ int result = 0;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_rpipe *rpipe;
+ u8 eptype;
+
+ d_fnstart(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb,
+ gfp);
+ mutex_lock(&wa->rpipe_mutex);
+ rpipe = ep->hcpriv;
+ if (rpipe != NULL) {
+ if (CONFIG_BUG == 1) {
+ result = rpipe_check_aim(rpipe, wa, ep, urb, gfp);
+ if (result < 0)
+ goto error;
+ }
+ __rpipe_get(rpipe);
+ d_printf(2, dev, "ep 0x%02x: reusing rpipe %u\n",
+ ep->desc.bEndpointAddress,
+ le16_to_cpu(rpipe->descr.wRPipeIndex));
+ } else {
+ /* hmm, assign idle rpipe, aim it */
+ result = -ENOBUFS;
+ eptype = ep->desc.bmAttributes & 0x03;
+ result = rpipe_get_idle(&rpipe, wa, 1 << eptype, gfp);
+ if (result < 0)
+ goto error;
+ result = rpipe_aim(rpipe, wa, ep, urb, gfp);
+ if (result < 0) {
+ rpipe_put(rpipe);
+ goto error;
+ }
+ ep->hcpriv = rpipe;
+ rpipe->ep = ep;
+ __rpipe_get(rpipe); /* for caching into ep->hcpriv */
+ d_printf(2, dev, "ep 0x%02x: using rpipe %u\n",
+ ep->desc.bEndpointAddress,
+ le16_to_cpu(rpipe->descr.wRPipeIndex));
+ }
+ d_dump(4, dev, &rpipe->descr, sizeof(rpipe->descr));
+error:
+ mutex_unlock(&wa->rpipe_mutex);
+ d_fnend(3, dev, "(wa %p ep %p urb %p gfp 0x%08x)\n", wa, ep, urb, gfp);
+ return result;
+}
+
+/*
+ * Allocate the bitmap for each rpipe.
+ */
+int wa_rpipes_create(struct wahc *wa)
+{
+ wa->rpipes = wa->wa_descr->wNumRPipes;
+ wa->rpipe_bm = kzalloc(BITS_TO_LONGS(wa->rpipes)*sizeof(unsigned long),
+ GFP_KERNEL);
+ if (wa->rpipe_bm == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+void wa_rpipes_destroy(struct wahc *wa)
+{
+ struct device *dev = &wa->usb_iface->dev;
+ d_fnstart(3, dev, "(wa %p)\n", wa);
+ if (!bitmap_empty(wa->rpipe_bm, wa->rpipes)) {
+ char buf[256];
+ WARN_ON(1);
+ bitmap_scnprintf(buf, sizeof(buf), wa->rpipe_bm, wa->rpipes);
+ dev_err(dev, "BUG: pipes not released on exit: %s\n", buf);
+ }
+ kfree(wa->rpipe_bm);
+ d_fnend(3, dev, "(wa %p)\n", wa);
+}
+
+/*
+ * Release resources allocated for an endpoint
+ *
+ * If there is an associated rpipe to this endpoint, Abort any pending
+ * transfers and put it. If the rpipe ends up being destroyed,
+ * __rpipe_destroy() will cleanup ep->hcpriv.
+ *
+ * This is called before calling hcd->stop(), so you don't need to do
+ * anything else in there.
+ */
+void rpipe_ep_disable(struct wahc *wa, struct usb_host_endpoint *ep)
+{
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_rpipe *rpipe;
+ d_fnstart(2, dev, "(wa %p ep %p)\n", wa, ep);
+ mutex_lock(&wa->rpipe_mutex);
+ rpipe = ep->hcpriv;
+ if (rpipe != NULL) {
+ unsigned rc = atomic_read(&rpipe->refcnt.refcount);
+ int result;
+ u16 index = le16_to_cpu(rpipe->descr.wRPipeIndex);
+
+ if (rc != 1)
+ d_printf(1, dev, "(wa %p ep %p) rpipe %p refcnt %u\n",
+ wa, ep, rpipe, rc);
+
+ d_printf(1, dev, "rpipe %u: abort\n", index);
+ result = usb_control_msg(
+ wa->usb_dev, usb_rcvctrlpipe(wa->usb_dev, 0),
+ USB_REQ_RPIPE_ABORT,
+ USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_RPIPE,
+ 0, index, NULL, 0, 1000 /* FIXME: arbitrary */);
+ if (result < 0 && result != -ENODEV /* dev is gone */)
+ d_printf(1, dev, "(wa %p rpipe %u): abort failed: %d\n",
+ wa, index, result);
+ rpipe_put(rpipe);
+ }
+ mutex_unlock(&wa->rpipe_mutex);
+ d_fnend(2, dev, "(wa %p ep %p)\n", wa, ep);
+ return;
+}
+EXPORT_SYMBOL_GPL(rpipe_ep_disable);
--- /dev/null
+/*
+ * WUSB Wire Adapter
+ * Data transfer and URB enqueing
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * How transfers work: get a buffer, break it up in segments (segment
+ * size is a multiple of the maxpacket size). For each segment issue a
+ * segment request (struct wa_xfer_*), then send the data buffer if
+ * out or nothing if in (all over the DTO endpoint).
+ *
+ * For each submitted segment request, a notification will come over
+ * the NEP endpoint and a transfer result (struct xfer_result) will
+ * arrive in the DTI URB. Read it, get the xfer ID, see if there is
+ * data coming (inbound transfer), schedule a read and handle it.
+ *
+ * Sounds simple, it is a pain to implement.
+ *
+ *
+ * ENTRY POINTS
+ *
+ * FIXME
+ *
+ * LIFE CYCLE / STATE DIAGRAM
+ *
+ * FIXME
+ *
+ * THIS CODE IS DISGUSTING
+ *
+ * Warned you are; it's my second try and still not happy with it.
+ *
+ * NOTES:
+ *
+ * - No iso
+ *
+ * - Supports DMA xfers, control, bulk and maybe interrupt
+ *
+ * - Does not recycle unused rpipes
+ *
+ * An rpipe is assigned to an endpoint the first time it is used,
+ * and then it's there, assigned, until the endpoint is disabled
+ * (destroyed [{h,d}wahc_op_ep_disable()]. The assignment of the
+ * rpipe to the endpoint is done under the wa->rpipe_sem semaphore
+ * (should be a mutex).
+ *
+ * Two methods it could be done:
+ *
+ * (a) set up a timer everytime an rpipe's use count drops to 1
+ * (which means unused) or when a transfer ends. Reset the
+ * timer when a xfer is queued. If the timer expires, release
+ * the rpipe [see rpipe_ep_disable()].
+ *
+ * (b) when looking for free rpipes to attach [rpipe_get_by_ep()],
+ * when none are found go over the list, check their endpoint
+ * and their activity record (if no last-xfer-done-ts in the
+ * last x seconds) take it
+ *
+ * However, due to the fact that we have a set of limited
+ * resources (max-segments-at-the-same-time per xfer,
+ * xfers-per-ripe, blocks-per-rpipe, rpipes-per-host), at the end
+ * we are going to have to rebuild all this based on an scheduler,
+ * to where we have a list of transactions to do and based on the
+ * availability of the different requried components (blocks,
+ * rpipes, segment slots, etc), we go scheduling them. Painful.
+ */
+#include <linux/init.h>
+#include <linux/spinlock.h>
+#include <linux/hash.h>
+#include "wa-hc.h"
+#include "wusbhc.h"
+
+#undef D_LOCAL
+#define D_LOCAL 0 /* 0 disabled, > 0 different levels... */
+#include <linux/uwb/debug.h>
+
+enum {
+ WA_SEGS_MAX = 255,
+};
+
+enum wa_seg_status {
+ WA_SEG_NOTREADY,
+ WA_SEG_READY,
+ WA_SEG_DELAYED,
+ WA_SEG_SUBMITTED,
+ WA_SEG_PENDING,
+ WA_SEG_DTI_PENDING,
+ WA_SEG_DONE,
+ WA_SEG_ERROR,
+ WA_SEG_ABORTED,
+};
+
+static void wa_xfer_delayed_run(struct wa_rpipe *);
+
+/*
+ * Life cycle governed by 'struct urb' (the refcount of the struct is
+ * that of the 'struct urb' and usb_free_urb() would free the whole
+ * struct).
+ */
+struct wa_seg {
+ struct urb urb;
+ struct urb *dto_urb; /* for data output? */
+ struct list_head list_node; /* for rpipe->req_list */
+ struct wa_xfer *xfer; /* out xfer */
+ u8 index; /* which segment we are */
+ enum wa_seg_status status;
+ ssize_t result; /* bytes xfered or error */
+ struct wa_xfer_hdr xfer_hdr;
+ u8 xfer_extra[]; /* xtra space for xfer_hdr_ctl */
+};
+
+static void wa_seg_init(struct wa_seg *seg)
+{
+ /* usb_init_urb() repeats a lot of work, so we do it here */
+ kref_init(&seg->urb.kref);
+}
+
+/*
+ * Protected by xfer->lock
+ *
+ */
+struct wa_xfer {
+ struct kref refcnt;
+ struct list_head list_node;
+ spinlock_t lock;
+ u32 id;
+
+ struct wahc *wa; /* Wire adapter we are plugged to */
+ struct usb_host_endpoint *ep;
+ struct urb *urb; /* URB we are transfering for */
+ struct wa_seg **seg; /* transfer segments */
+ u8 segs, segs_submitted, segs_done;
+ unsigned is_inbound:1;
+ unsigned is_dma:1;
+ size_t seg_size;
+ int result;
+
+ gfp_t gfp; /* allocation mask */
+
+ struct wusb_dev *wusb_dev; /* for activity timestamps */
+};
+
+static inline void wa_xfer_init(struct wa_xfer *xfer)
+{
+ kref_init(&xfer->refcnt);
+ INIT_LIST_HEAD(&xfer->list_node);
+ spin_lock_init(&xfer->lock);
+}
+
+/*
+ * Destory a transfer structure
+ *
+ * Note that the xfer->seg[index] thingies follow the URB life cycle,
+ * so we need to put them, not free them.
+ */
+static void wa_xfer_destroy(struct kref *_xfer)
+{
+ struct wa_xfer *xfer = container_of(_xfer, struct wa_xfer, refcnt);
+ if (xfer->seg) {
+ unsigned cnt;
+ for (cnt = 0; cnt < xfer->segs; cnt++) {
+ if (xfer->is_inbound)
+ usb_put_urb(xfer->seg[cnt]->dto_urb);
+ usb_put_urb(&xfer->seg[cnt]->urb);
+ }
+ }
+ kfree(xfer);
+ d_printf(2, NULL, "xfer %p destroyed\n", xfer);
+}
+
+static void wa_xfer_get(struct wa_xfer *xfer)
+{
+ kref_get(&xfer->refcnt);
+}
+
+static void wa_xfer_put(struct wa_xfer *xfer)
+{
+ d_fnstart(3, NULL, "(xfer %p) -- ref count bef put %d\n",
+ xfer, atomic_read(&xfer->refcnt.refcount));
+ kref_put(&xfer->refcnt, wa_xfer_destroy);
+ d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+}
+
+/*
+ * xfer is referenced
+ *
+ * xfer->lock has to be unlocked
+ *
+ * We take xfer->lock for setting the result; this is a barrier
+ * against drivers/usb/core/hcd.c:unlink1() being called after we call
+ * usb_hcd_giveback_urb() and wa_urb_dequeue() trying to get a
+ * reference to the transfer.
+ */
+static void wa_xfer_giveback(struct wa_xfer *xfer)
+{
+ unsigned long flags;
+ d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+ spin_lock_irqsave(&xfer->wa->xfer_list_lock, flags);
+ list_del_init(&xfer->list_node);
+ spin_unlock_irqrestore(&xfer->wa->xfer_list_lock, flags);
+ /* FIXME: segmentation broken -- kills DWA */
+ wusbhc_giveback_urb(xfer->wa->wusb, xfer->urb, xfer->result);
+ wa_put(xfer->wa);
+ wa_xfer_put(xfer);
+ d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+}
+
+/*
+ * xfer is referenced
+ *
+ * xfer->lock has to be unlocked
+ */
+static void wa_xfer_completion(struct wa_xfer *xfer)
+{
+ d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+ if (xfer->wusb_dev)
+ wusb_dev_put(xfer->wusb_dev);
+ rpipe_put(xfer->ep->hcpriv);
+ wa_xfer_giveback(xfer);
+ d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+ return;
+}
+
+/*
+ * If transfer is done, wrap it up and return true
+ *
+ * xfer->lock has to be locked
+ */
+static unsigned __wa_xfer_is_done(struct wa_xfer *xfer)
+{
+ unsigned result, cnt;
+ struct wa_seg *seg;
+ struct urb *urb = xfer->urb;
+ unsigned found_short = 0;
+
+ d_fnstart(3, NULL, "(xfer %p)\n", xfer);
+ result = xfer->segs_done == xfer->segs_submitted;
+ if (result == 0)
+ goto out;
+ urb->actual_length = 0;
+ for (cnt = 0; cnt < xfer->segs; cnt++) {
+ seg = xfer->seg[cnt];
+ switch (seg->status) {
+ case WA_SEG_DONE:
+ if (found_short && seg->result > 0) {
+ if (printk_ratelimit())
+ printk(KERN_ERR "xfer %p#%u: bad short "
+ "segments (%zu)\n", xfer, cnt,
+ seg->result);
+ urb->status = -EINVAL;
+ goto out;
+ }
+ urb->actual_length += seg->result;
+ if (seg->result < xfer->seg_size
+ && cnt != xfer->segs-1)
+ found_short = 1;
+ d_printf(2, NULL, "xfer %p#%u: DONE short %d "
+ "result %zu urb->actual_length %d\n",
+ xfer, seg->index, found_short, seg->result,
+ urb->actual_length);
+ break;
+ case WA_SEG_ERROR:
+ xfer->result = seg->result;
+ d_printf(2, NULL, "xfer %p#%u: ERROR result %zu\n",
+ xfer, seg->index, seg->result);
+ goto out;
+ case WA_SEG_ABORTED:
+ WARN_ON(urb->status != -ECONNRESET
+ && urb->status != -ENOENT);
+ d_printf(2, NULL, "xfer %p#%u ABORTED: result %d\n",
+ xfer, seg->index, urb->status);
+ xfer->result = urb->status;
+ goto out;
+ default:
+ /* if (printk_ratelimit()) */
+ printk(KERN_ERR "xfer %p#%u: "
+ "is_done bad state %d\n",
+ xfer, cnt, seg->status);
+ xfer->result = -EINVAL;
+ WARN_ON(1);
+ goto out;
+ }
+ }
+ xfer->result = 0;
+out:
+ d_fnend(3, NULL, "(xfer %p) = void\n", xfer);
+ return result;
+}
+
+/*
+ * Initialize a transfer's ID
+ *
+ * We need to use a sequential number; if we use the pointer or the
+ * hash of the pointer, it can repeat over sequential transfers and
+ * then it will confuse the HWA....wonder why in hell they put a 32
+ * bit handle in there then.
+ */
+static void wa_xfer_id_init(struct wa_xfer *xfer)
+{
+ xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count);
+}
+
+/*
+ * Return the xfer's ID associated with xfer
+ *
+ * Need to generate a
+ */
+static u32 wa_xfer_id(struct wa_xfer *xfer)
+{
+ return xfer->id;
+}
+
+/*
+ * Search for a transfer list ID on the HCD's URB list
+ *
+ * For 32 bit architectures, we use the pointer itself; for 64 bits, a
+ * 32-bit hash of the pointer.
+ *
+ * @returns NULL if not found.
+ */
+static struct wa_xfer *wa_xfer_get_by_id(struct wahc *wa, u32 id)
+{
+ unsigned long flags;
+ struct wa_xfer *xfer_itr;
+ spin_lock_irqsave(&wa->xfer_list_lock, flags);
+ list_for_each_entry(xfer_itr, &wa->xfer_list, list_node) {
+ if (id == xfer_itr->id) {
+ wa_xfer_get(xfer_itr);
+ goto out;
+ }
+ }
+ xfer_itr = NULL;
+out:
+ spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
+ return xfer_itr;
+}
+
+struct wa_xfer_abort_buffer {
+ struct urb urb;
+ struct wa_xfer_abort cmd;
+};
+
+static void __wa_xfer_abort_cb(struct urb *urb)
+{
+ struct wa_xfer_abort_buffer *b = urb->context;
+ usb_put_urb(&b->urb);
+}
+
+/*
+ * Aborts an ongoing transaction
+ *
+ * Assumes the transfer is referenced and locked and in a submitted
+ * state (mainly that there is an endpoint/rpipe assigned).
+ *
+ * The callback (see above) does nothing but freeing up the data by
+ * putting the URB. Because the URB is allocated at the head of the
+ * struct, the whole space we allocated is kfreed.
+ *
+ * We'll get an 'aborted transaction' xfer result on DTI, that'll
+ * politely ignore because at this point the transaction has been
+ * marked as aborted already.
+ */
+static void __wa_xfer_abort(struct wa_xfer *xfer)
+{
+ int result;
+ struct device *dev = &xfer->wa->usb_iface->dev;
+ struct wa_xfer_abort_buffer *b;
+ struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+ b = kmalloc(sizeof(*b), GFP_ATOMIC);
+ if (b == NULL)
+ goto error_kmalloc;
+ b->cmd.bLength = sizeof(b->cmd);
+ b->cmd.bRequestType = WA_XFER_ABORT;
+ b->cmd.wRPipe = rpipe->descr.wRPipeIndex;
+ b->cmd.dwTransferID = wa_xfer_id(xfer);
+
+ usb_init_urb(&b->urb);
+ usb_fill_bulk_urb(&b->urb, xfer->wa->usb_dev,
+ usb_sndbulkpipe(xfer->wa->usb_dev,
+ xfer->wa->dto_epd->bEndpointAddress),
+ &b->cmd, sizeof(b->cmd), __wa_xfer_abort_cb, b);
+ result = usb_submit_urb(&b->urb, GFP_ATOMIC);
+ if (result < 0)
+ goto error_submit;
+ return; /* callback frees! */
+
+
+error_submit:
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p: Can't submit abort request: %d\n",
+ xfer, result);
+ kfree(b);
+error_kmalloc:
+ return;
+
+}
+
+/*
+ *
+ * @returns < 0 on error, transfer segment request size if ok
+ */
+static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer,
+ enum wa_xfer_type *pxfer_type)
+{
+ ssize_t result;
+ struct device *dev = &xfer->wa->usb_iface->dev;
+ size_t maxpktsize;
+ struct urb *urb = xfer->urb;
+ struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+ d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
+ xfer, rpipe, urb);
+ switch (rpipe->descr.bmAttribute & 0x3) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ *pxfer_type = WA_XFER_TYPE_CTL;
+ result = sizeof(struct wa_xfer_ctl);
+ break;
+ case USB_ENDPOINT_XFER_INT:
+ case USB_ENDPOINT_XFER_BULK:
+ *pxfer_type = WA_XFER_TYPE_BI;
+ result = sizeof(struct wa_xfer_bi);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ dev_err(dev, "FIXME: ISOC not implemented\n");
+ result = -ENOSYS;
+ goto error;
+ default:
+ /* never happens */
+ BUG();
+ result = -EINVAL; /* shut gcc up */
+ };
+ xfer->is_inbound = urb->pipe & USB_DIR_IN ? 1 : 0;
+ xfer->is_dma = urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? 1 : 0;
+ xfer->seg_size = le16_to_cpu(rpipe->descr.wBlocks)
+ * 1 << (xfer->wa->wa_descr->bRPipeBlockSize - 1);
+ /* Compute the segment size and make sure it is a multiple of
+ * the maxpktsize (WUSB1.0[8.3.3.1])...not really too much of
+ * a check (FIXME) */
+ maxpktsize = le16_to_cpu(rpipe->descr.wMaxPacketSize);
+ if (xfer->seg_size < maxpktsize) {
+ dev_err(dev, "HW BUG? seg_size %zu smaller than maxpktsize "
+ "%zu\n", xfer->seg_size, maxpktsize);
+ result = -EINVAL;
+ goto error;
+ }
+ xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize;
+ xfer->segs = (urb->transfer_buffer_length + xfer->seg_size - 1)
+ / xfer->seg_size;
+ if (xfer->segs >= WA_SEGS_MAX) {
+ dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n",
+ (int)(urb->transfer_buffer_length / xfer->seg_size),
+ WA_SEGS_MAX);
+ result = -EINVAL;
+ goto error;
+ }
+ if (xfer->segs == 0 && *pxfer_type == WA_XFER_TYPE_CTL)
+ xfer->segs = 1;
+error:
+ d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
+ xfer, rpipe, urb, (int)result);
+ return result;
+}
+
+/** Fill in the common request header and xfer-type specific data. */
+static void __wa_xfer_setup_hdr0(struct wa_xfer *xfer,
+ struct wa_xfer_hdr *xfer_hdr0,
+ enum wa_xfer_type xfer_type,
+ size_t xfer_hdr_size)
+{
+ struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+
+ xfer_hdr0 = &xfer->seg[0]->xfer_hdr;
+ xfer_hdr0->bLength = xfer_hdr_size;
+ xfer_hdr0->bRequestType = xfer_type;
+ xfer_hdr0->wRPipe = rpipe->descr.wRPipeIndex;
+ xfer_hdr0->dwTransferID = wa_xfer_id(xfer);
+ xfer_hdr0->bTransferSegment = 0;
+ switch (xfer_type) {
+ case WA_XFER_TYPE_CTL: {
+ struct wa_xfer_ctl *xfer_ctl =
+ container_of(xfer_hdr0, struct wa_xfer_ctl, hdr);
+ xfer_ctl->bmAttribute = xfer->is_inbound ? 1 : 0;
+ BUG_ON(xfer->urb->transfer_flags & URB_NO_SETUP_DMA_MAP
+ && xfer->urb->setup_packet == NULL);
+ memcpy(&xfer_ctl->baSetupData, xfer->urb->setup_packet,
+ sizeof(xfer_ctl->baSetupData));
+ break;
+ }
+ case WA_XFER_TYPE_BI:
+ break;
+ case WA_XFER_TYPE_ISO:
+ printk(KERN_ERR "FIXME: ISOC not implemented\n");
+ default:
+ BUG();
+ };
+}
+
+/*
+ * Callback for the OUT data phase of the segment request
+ *
+ * Check wa_seg_cb(); most comments also apply here because this
+ * function does almost the same thing and they work closely
+ * together.
+ *
+ * If the seg request has failed but this DTO phase has suceeded,
+ * wa_seg_cb() has already failed the segment and moved the
+ * status to WA_SEG_ERROR, so this will go through 'case 0' and
+ * effectively do nothing.
+ */
+static void wa_seg_dto_cb(struct urb *urb)
+{
+ struct wa_seg *seg = urb->context;
+ struct wa_xfer *xfer = seg->xfer;
+ struct wahc *wa;
+ struct device *dev;
+ struct wa_rpipe *rpipe;
+ unsigned long flags;
+ unsigned rpipe_ready = 0;
+ u8 done = 0;
+
+ d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+ switch (urb->status) {
+ case 0:
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ d_printf(2, dev, "xfer %p#%u: data out done (%d bytes)\n",
+ xfer, seg->index, urb->actual_length);
+ if (seg->status < WA_SEG_PENDING)
+ seg->status = WA_SEG_PENDING;
+ seg->result = urb->actual_length;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ break;
+ case -ECONNRESET: /* URB unlinked; no need to do anything */
+ case -ENOENT: /* as it was done by the who unlinked us */
+ break;
+ default: /* Other errors ... */
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ rpipe = xfer->ep->hcpriv;
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: data out error %d\n",
+ xfer, seg->index, urb->status);
+ if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)){
+ dev_err(dev, "DTO: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ if (seg->status != WA_SEG_ERROR) {
+ seg->status = WA_SEG_ERROR;
+ seg->result = urb->status;
+ xfer->segs_done++;
+ __wa_xfer_abort(xfer);
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ }
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ }
+ d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Callback for the segment request
+ *
+ * If succesful transition state (unless already transitioned or
+ * outbound transfer); otherwise, take a note of the error, mark this
+ * segment done and try completion.
+ *
+ * Note we don't access until we are sure that the transfer hasn't
+ * been cancelled (ECONNRESET, ENOENT), which could mean that
+ * seg->xfer could be already gone.
+ *
+ * We have to check before setting the status to WA_SEG_PENDING
+ * because sometimes the xfer result callback arrives before this
+ * callback (geeeeeeze), so it might happen that we are already in
+ * another state. As well, we don't set it if the transfer is inbound,
+ * as in that case, wa_seg_dto_cb will do it when the OUT data phase
+ * finishes.
+ */
+static void wa_seg_cb(struct urb *urb)
+{
+ struct wa_seg *seg = urb->context;
+ struct wa_xfer *xfer = seg->xfer;
+ struct wahc *wa;
+ struct device *dev;
+ struct wa_rpipe *rpipe;
+ unsigned long flags;
+ unsigned rpipe_ready;
+ u8 done = 0;
+
+ d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+ switch (urb->status) {
+ case 0:
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ d_printf(2, dev, "xfer %p#%u: request done\n",
+ xfer, seg->index);
+ if (xfer->is_inbound && seg->status < WA_SEG_PENDING)
+ seg->status = WA_SEG_PENDING;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ break;
+ case -ECONNRESET: /* URB unlinked; no need to do anything */
+ case -ENOENT: /* as it was done by the who unlinked us */
+ break;
+ default: /* Other errors ... */
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ rpipe = xfer->ep->hcpriv;
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: request error %d\n",
+ xfer, seg->index, urb->status);
+ if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)){
+ dev_err(dev, "DTO: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ usb_unlink_urb(seg->dto_urb);
+ seg->status = WA_SEG_ERROR;
+ seg->result = urb->status;
+ xfer->segs_done++;
+ __wa_xfer_abort(xfer);
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ }
+ d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Allocate the segs array and initialize each of them
+ *
+ * The segments are freed by wa_xfer_destroy() when the xfer use count
+ * drops to zero; however, because each segment is given the same life
+ * cycle as the USB URB it contains, it is actually freed by
+ * usb_put_urb() on the contained USB URB (twisted, eh?).
+ */
+static int __wa_xfer_setup_segs(struct wa_xfer *xfer, size_t xfer_hdr_size)
+{
+ int result, cnt;
+ size_t alloc_size = sizeof(*xfer->seg[0])
+ - sizeof(xfer->seg[0]->xfer_hdr) + xfer_hdr_size;
+ struct usb_device *usb_dev = xfer->wa->usb_dev;
+ const struct usb_endpoint_descriptor *dto_epd = xfer->wa->dto_epd;
+ struct wa_seg *seg;
+ size_t buf_itr, buf_size, buf_itr_size;
+
+ result = -ENOMEM;
+ xfer->seg = kcalloc(xfer->segs, sizeof(xfer->seg[0]), GFP_ATOMIC);
+ if (xfer->seg == NULL)
+ goto error_segs_kzalloc;
+ buf_itr = 0;
+ buf_size = xfer->urb->transfer_buffer_length;
+ for (cnt = 0; cnt < xfer->segs; cnt++) {
+ seg = xfer->seg[cnt] = kzalloc(alloc_size, GFP_ATOMIC);
+ if (seg == NULL)
+ goto error_seg_kzalloc;
+ wa_seg_init(seg);
+ seg->xfer = xfer;
+ seg->index = cnt;
+ usb_fill_bulk_urb(&seg->urb, usb_dev,
+ usb_sndbulkpipe(usb_dev,
+ dto_epd->bEndpointAddress),
+ &seg->xfer_hdr, xfer_hdr_size,
+ wa_seg_cb, seg);
+ buf_itr_size = buf_size > xfer->seg_size ?
+ xfer->seg_size : buf_size;
+ if (xfer->is_inbound == 0 && buf_size > 0) {
+ seg->dto_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ if (seg->dto_urb == NULL)
+ goto error_dto_alloc;
+ usb_fill_bulk_urb(
+ seg->dto_urb, usb_dev,
+ usb_sndbulkpipe(usb_dev,
+ dto_epd->bEndpointAddress),
+ NULL, 0, wa_seg_dto_cb, seg);
+ if (xfer->is_dma) {
+ seg->dto_urb->transfer_dma =
+ xfer->urb->transfer_dma + buf_itr;
+ seg->dto_urb->transfer_flags |=
+ URB_NO_TRANSFER_DMA_MAP;
+ } else
+ seg->dto_urb->transfer_buffer =
+ xfer->urb->transfer_buffer + buf_itr;
+ seg->dto_urb->transfer_buffer_length = buf_itr_size;
+ }
+ seg->status = WA_SEG_READY;
+ buf_itr += buf_itr_size;
+ buf_size -= buf_itr_size;
+ }
+ return 0;
+
+error_dto_alloc:
+ kfree(xfer->seg[cnt]);
+ cnt--;
+error_seg_kzalloc:
+ /* use the fact that cnt is left at were it failed */
+ for (; cnt > 0; cnt--) {
+ if (xfer->is_inbound == 0)
+ kfree(xfer->seg[cnt]->dto_urb);
+ kfree(xfer->seg[cnt]);
+ }
+error_segs_kzalloc:
+ return result;
+}
+
+/*
+ * Allocates all the stuff needed to submit a transfer
+ *
+ * Breaks the whole data buffer in a list of segments, each one has a
+ * structure allocated to it and linked in xfer->seg[index]
+ *
+ * FIXME: merge setup_segs() and the last part of this function, no
+ * need to do two for loops when we could run everything in a
+ * single one
+ */
+static int __wa_xfer_setup(struct wa_xfer *xfer, struct urb *urb)
+{
+ int result;
+ struct device *dev = &xfer->wa->usb_iface->dev;
+ enum wa_xfer_type xfer_type = 0; /* shut up GCC */
+ size_t xfer_hdr_size, cnt, transfer_size;
+ struct wa_xfer_hdr *xfer_hdr0, *xfer_hdr;
+
+ d_fnstart(3, dev, "(xfer %p [rpipe %p] urb %p)\n",
+ xfer, xfer->ep->hcpriv, urb);
+
+ result = __wa_xfer_setup_sizes(xfer, &xfer_type);
+ if (result < 0)
+ goto error_setup_sizes;
+ xfer_hdr_size = result;
+ result = __wa_xfer_setup_segs(xfer, xfer_hdr_size);
+ if (result < 0) {
+ dev_err(dev, "xfer %p: Failed to allocate %d segments: %d\n",
+ xfer, xfer->segs, result);
+ goto error_setup_segs;
+ }
+ /* Fill the first header */
+ xfer_hdr0 = &xfer->seg[0]->xfer_hdr;
+ wa_xfer_id_init(xfer);
+ __wa_xfer_setup_hdr0(xfer, xfer_hdr0, xfer_type, xfer_hdr_size);
+
+ /* Fill remainig headers */
+ xfer_hdr = xfer_hdr0;
+ transfer_size = urb->transfer_buffer_length;
+ xfer_hdr0->dwTransferLength = transfer_size > xfer->seg_size ?
+ xfer->seg_size : transfer_size;
+ transfer_size -= xfer->seg_size;
+ for (cnt = 1; cnt < xfer->segs; cnt++) {
+ xfer_hdr = &xfer->seg[cnt]->xfer_hdr;
+ memcpy(xfer_hdr, xfer_hdr0, xfer_hdr_size);
+ xfer_hdr->bTransferSegment = cnt;
+ xfer_hdr->dwTransferLength = transfer_size > xfer->seg_size ?
+ cpu_to_le32(xfer->seg_size)
+ : cpu_to_le32(transfer_size);
+ xfer->seg[cnt]->status = WA_SEG_READY;
+ transfer_size -= xfer->seg_size;
+ }
+ xfer_hdr->bTransferSegment |= 0x80; /* this is the last segment */
+ result = 0;
+error_setup_segs:
+error_setup_sizes:
+ d_fnend(3, dev, "(xfer %p [rpipe %p] urb %p) = %d\n",
+ xfer, xfer->ep->hcpriv, urb, result);
+ return result;
+}
+
+/*
+ *
+ *
+ * rpipe->seg_lock is held!
+ */
+static int __wa_seg_submit(struct wa_rpipe *rpipe, struct wa_xfer *xfer,
+ struct wa_seg *seg)
+{
+ int result;
+ result = usb_submit_urb(&seg->urb, GFP_ATOMIC);
+ if (result < 0) {
+ printk(KERN_ERR "xfer %p#%u: REQ submit failed: %d\n",
+ xfer, seg->index, result);
+ goto error_seg_submit;
+ }
+ if (seg->dto_urb) {
+ result = usb_submit_urb(seg->dto_urb, GFP_ATOMIC);
+ if (result < 0) {
+ printk(KERN_ERR "xfer %p#%u: DTO submit failed: %d\n",
+ xfer, seg->index, result);
+ goto error_dto_submit;
+ }
+ }
+ seg->status = WA_SEG_SUBMITTED;
+ rpipe_avail_dec(rpipe);
+ return 0;
+
+error_dto_submit:
+ usb_unlink_urb(&seg->urb);
+error_seg_submit:
+ seg->status = WA_SEG_ERROR;
+ seg->result = result;
+ return result;
+}
+
+/*
+ * Execute more queued request segments until the maximum concurrent allowed
+ *
+ * The ugly unlock/lock sequence on the error path is needed as the
+ * xfer->lock normally nests the seg_lock and not viceversa.
+ *
+ */
+static void wa_xfer_delayed_run(struct wa_rpipe *rpipe)
+{
+ int result;
+ struct device *dev = &rpipe->wa->usb_iface->dev;
+ struct wa_seg *seg;
+ struct wa_xfer *xfer;
+ unsigned long flags;
+
+ d_fnstart(1, dev, "(rpipe #%d) %d segments available\n",
+ le16_to_cpu(rpipe->descr.wRPipeIndex),
+ atomic_read(&rpipe->segs_available));
+ spin_lock_irqsave(&rpipe->seg_lock, flags);
+ while (atomic_read(&rpipe->segs_available) > 0
+ && !list_empty(&rpipe->seg_list)) {
+ seg = list_entry(rpipe->seg_list.next, struct wa_seg,
+ list_node);
+ list_del(&seg->list_node);
+ xfer = seg->xfer;
+ result = __wa_seg_submit(rpipe, xfer, seg);
+ d_printf(1, dev, "xfer %p#%u submitted from delayed "
+ "[%d segments available] %d\n",
+ xfer, seg->index,
+ atomic_read(&rpipe->segs_available), result);
+ if (unlikely(result < 0)) {
+ spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+ spin_lock_irqsave(&xfer->lock, flags);
+ __wa_xfer_abort(xfer);
+ xfer->segs_done++;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ spin_lock_irqsave(&rpipe->seg_lock, flags);
+ }
+ }
+ spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+ d_fnend(1, dev, "(rpipe #%d) = void, %d segments available\n",
+ le16_to_cpu(rpipe->descr.wRPipeIndex),
+ atomic_read(&rpipe->segs_available));
+
+}
+
+/*
+ *
+ * xfer->lock is taken
+ *
+ * On failure submitting we just stop submitting and return error;
+ * wa_urb_enqueue_b() will execute the completion path
+ */
+static int __wa_xfer_submit(struct wa_xfer *xfer)
+{
+ int result;
+ struct wahc *wa = xfer->wa;
+ struct device *dev = &wa->usb_iface->dev;
+ unsigned cnt;
+ struct wa_seg *seg;
+ unsigned long flags;
+ struct wa_rpipe *rpipe = xfer->ep->hcpriv;
+ size_t maxrequests = le16_to_cpu(rpipe->descr.wRequests);
+ u8 available;
+ u8 empty;
+
+ d_fnstart(3, dev, "(xfer %p [rpipe %p])\n",
+ xfer, xfer->ep->hcpriv);
+
+ spin_lock_irqsave(&wa->xfer_list_lock, flags);
+ list_add_tail(&xfer->list_node, &wa->xfer_list);
+ spin_unlock_irqrestore(&wa->xfer_list_lock, flags);
+
+ BUG_ON(atomic_read(&rpipe->segs_available) > maxrequests);
+ result = 0;
+ spin_lock_irqsave(&rpipe->seg_lock, flags);
+ for (cnt = 0; cnt < xfer->segs; cnt++) {
+ available = atomic_read(&rpipe->segs_available);
+ empty = list_empty(&rpipe->seg_list);
+ seg = xfer->seg[cnt];
+ d_printf(2, dev, "xfer %p#%u: available %u empty %u (%s)\n",
+ xfer, cnt, available, empty,
+ available == 0 || !empty ? "delayed" : "submitted");
+ if (available == 0 || !empty) {
+ d_printf(1, dev, "xfer %p#%u: delayed\n", xfer, cnt);
+ seg->status = WA_SEG_DELAYED;
+ list_add_tail(&seg->list_node, &rpipe->seg_list);
+ } else {
+ result = __wa_seg_submit(rpipe, xfer, seg);
+ if (result < 0)
+ goto error_seg_submit;
+ }
+ xfer->segs_submitted++;
+ }
+ spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+ d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
+ xfer->ep->hcpriv);
+ return result;
+
+error_seg_submit:
+ __wa_xfer_abort(xfer);
+ spin_unlock_irqrestore(&rpipe->seg_lock, flags);
+ d_fnend(3, dev, "(xfer %p [rpipe %p]) = void\n", xfer,
+ xfer->ep->hcpriv);
+ return result;
+}
+
+/*
+ * Second part of a URB/transfer enqueuement
+ *
+ * Assumes this comes from wa_urb_enqueue() [maybe through
+ * wa_urb_enqueue_run()]. At this point:
+ *
+ * xfer->wa filled and refcounted
+ * xfer->ep filled with rpipe refcounted if
+ * delayed == 0
+ * xfer->urb filled and refcounted (this is the case when called
+ * from wa_urb_enqueue() as we come from usb_submit_urb()
+ * and when called by wa_urb_enqueue_run(), as we took an
+ * extra ref dropped by _run() after we return).
+ * xfer->gfp filled
+ *
+ * If we fail at __wa_xfer_submit(), then we just check if we are done
+ * and if so, we run the completion procedure. However, if we are not
+ * yet done, we do nothing and wait for the completion handlers from
+ * the submitted URBs or from the xfer-result path to kick in. If xfer
+ * result never kicks in, the xfer will timeout from the USB code and
+ * dequeue() will be called.
+ */
+static void wa_urb_enqueue_b(struct wa_xfer *xfer)
+{
+ int result;
+ unsigned long flags;
+ struct urb *urb = xfer->urb;
+ struct wahc *wa = xfer->wa;
+ struct wusbhc *wusbhc = wa->wusb;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wusb_dev *wusb_dev;
+ unsigned done;
+
+ d_fnstart(3, dev, "(wa %p urb %p)\n", wa, urb);
+ result = rpipe_get_by_ep(wa, xfer->ep, urb, xfer->gfp);
+ if (result < 0)
+ goto error_rpipe_get;
+ result = -ENODEV;
+ /* FIXME: segmentation broken -- kills DWA */
+ mutex_lock(&wusbhc->mutex); /* get a WUSB dev */
+ if (urb->dev == NULL)
+ goto error_dev_gone;
+ wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev);
+ if (wusb_dev == NULL) {
+ mutex_unlock(&wusbhc->mutex);
+ goto error_dev_gone;
+ }
+ mutex_unlock(&wusbhc->mutex);
+
+ spin_lock_irqsave(&xfer->lock, flags);
+ xfer->wusb_dev = wusb_dev;
+ result = urb->status;
+ if (urb->status != -EINPROGRESS)
+ goto error_dequeued;
+
+ result = __wa_xfer_setup(xfer, urb);
+ if (result < 0)
+ goto error_xfer_setup;
+ result = __wa_xfer_submit(xfer);
+ if (result < 0)
+ goto error_xfer_submit;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ d_fnend(3, dev, "(wa %p urb %p) = void\n", wa, urb);
+ return;
+
+ /* this is basically wa_xfer_completion() broken up wa_xfer_giveback()
+ * does a wa_xfer_put() that will call wa_xfer_destroy() and clean
+ * upundo setup().
+ */
+error_xfer_setup:
+error_dequeued:
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ /* FIXME: segmentation broken, kills DWA */
+ if (wusb_dev)
+ wusb_dev_put(wusb_dev);
+error_dev_gone:
+ rpipe_put(xfer->ep->hcpriv);
+error_rpipe_get:
+ xfer->result = result;
+ wa_xfer_giveback(xfer);
+ d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
+ return;
+
+error_xfer_submit:
+ done = __wa_xfer_is_done(xfer);
+ xfer->result = result;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ d_fnend(3, dev, "(wa %p urb %p) = (void) %d\n", wa, urb, result);
+ return;
+}
+
+/*
+ * Execute the delayed transfers in the Wire Adapter @wa
+ *
+ * We need to be careful here, as dequeue() could be called in the
+ * middle. That's why we do the whole thing under the
+ * wa->xfer_list_lock. If dequeue() jumps in, it first locks urb->lock
+ * and then checks the list -- so as we would be acquiring in inverse
+ * order, we just drop the lock once we have the xfer and reacquire it
+ * later.
+ */
+void wa_urb_enqueue_run(struct work_struct *ws)
+{
+ struct wahc *wa = container_of(ws, struct wahc, xfer_work);
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_xfer *xfer, *next;
+ struct urb *urb;
+
+ d_fnstart(3, dev, "(wa %p)\n", wa);
+ spin_lock_irq(&wa->xfer_list_lock);
+ list_for_each_entry_safe(xfer, next, &wa->xfer_delayed_list,
+ list_node) {
+ list_del_init(&xfer->list_node);
+ spin_unlock_irq(&wa->xfer_list_lock);
+
+ urb = xfer->urb;
+ wa_urb_enqueue_b(xfer);
+ usb_put_urb(urb); /* taken when queuing */
+
+ spin_lock_irq(&wa->xfer_list_lock);
+ }
+ spin_unlock_irq(&wa->xfer_list_lock);
+ d_fnend(3, dev, "(wa %p) = void\n", wa);
+}
+EXPORT_SYMBOL_GPL(wa_urb_enqueue_run);
+
+/*
+ * Submit a transfer to the Wire Adapter in a delayed way
+ *
+ * The process of enqueuing involves possible sleeps() [see
+ * enqueue_b(), for the rpipe_get() and the mutex_lock()]. If we are
+ * in an atomic section, we defer the enqueue_b() call--else we call direct.
+ *
+ * @urb: We own a reference to it done by the HCI Linux USB stack that
+ * will be given up by calling usb_hcd_giveback_urb() or by
+ * returning error from this function -> ergo we don't have to
+ * refcount it.
+ */
+int wa_urb_enqueue(struct wahc *wa, struct usb_host_endpoint *ep,
+ struct urb *urb, gfp_t gfp)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_xfer *xfer;
+ unsigned long my_flags;
+ unsigned cant_sleep = irqs_disabled() | in_atomic();
+
+ d_fnstart(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x)\n",
+ wa, ep, urb, urb->transfer_buffer_length, gfp);
+
+ if (urb->transfer_buffer == NULL
+ && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)
+ && urb->transfer_buffer_length != 0) {
+ dev_err(dev, "BUG? urb %p: NULL xfer buffer & NODMA\n", urb);
+ dump_stack();
+ }
+
+ result = -ENOMEM;
+ xfer = kzalloc(sizeof(*xfer), gfp);
+ if (xfer == NULL)
+ goto error_kmalloc;
+
+ result = -ENOENT;
+ if (urb->status != -EINPROGRESS) /* cancelled */
+ goto error_dequeued; /* before starting? */
+ wa_xfer_init(xfer);
+ xfer->wa = wa_get(wa);
+ xfer->urb = urb;
+ xfer->gfp = gfp;
+ xfer->ep = ep;
+ urb->hcpriv = xfer;
+ d_printf(2, dev, "xfer %p urb %p pipe 0x%02x [%d bytes] %s %s %s\n",
+ xfer, urb, urb->pipe, urb->transfer_buffer_length,
+ urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP ? "dma" : "nodma",
+ urb->pipe & USB_DIR_IN ? "inbound" : "outbound",
+ cant_sleep ? "deferred" : "inline");
+ if (cant_sleep) {
+ usb_get_urb(urb);
+ spin_lock_irqsave(&wa->xfer_list_lock, my_flags);
+ list_add_tail(&xfer->list_node, &wa->xfer_delayed_list);
+ spin_unlock_irqrestore(&wa->xfer_list_lock, my_flags);
+ queue_work(wusbd, &wa->xfer_work);
+ } else {
+ wa_urb_enqueue_b(xfer);
+ }
+ d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = 0\n",
+ wa, ep, urb, urb->transfer_buffer_length, gfp);
+ return 0;
+
+error_dequeued:
+ kfree(xfer);
+error_kmalloc:
+ d_fnend(3, dev, "(wa %p ep %p urb %p [%d] gfp 0x%x) = %d\n",
+ wa, ep, urb, urb->transfer_buffer_length, gfp, result);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wa_urb_enqueue);
+
+/*
+ * Dequeue a URB and make sure uwb_hcd_giveback_urb() [completion
+ * handler] is called.
+ *
+ * Until a transfer goes successfully through wa_urb_enqueue() it
+ * needs to be dequeued with completion calling; when stuck in delayed
+ * or before wa_xfer_setup() is called, we need to do completion.
+ *
+ * not setup If there is no hcpriv yet, that means that that enqueue
+ * still had no time to set the xfer up. Because
+ * urb->status should be other than -EINPROGRESS,
+ * enqueue() will catch that and bail out.
+ *
+ * If the transfer has gone through setup, we just need to clean it
+ * up. If it has gone through submit(), we have to abort it [with an
+ * asynch request] and then make sure we cancel each segment.
+ *
+ */
+int wa_urb_dequeue(struct wahc *wa, struct urb *urb)
+{
+ struct device *dev = &wa->usb_iface->dev;
+ unsigned long flags, flags2;
+ struct wa_xfer *xfer;
+ struct wa_seg *seg;
+ struct wa_rpipe *rpipe;
+ unsigned cnt;
+ unsigned rpipe_ready = 0;
+
+ d_fnstart(3, dev, "(wa %p, urb %p)\n", wa, urb);
+
+ d_printf(1, dev, "xfer %p urb %p: aborting\n", urb->hcpriv, urb);
+ xfer = urb->hcpriv;
+ if (xfer == NULL) {
+ /* NOthing setup yet enqueue will see urb->status !=
+ * -EINPROGRESS (by hcd layer) and bail out with
+ * error, no need to do completion
+ */
+ BUG_ON(urb->status == -EINPROGRESS);
+ goto out;
+ }
+ spin_lock_irqsave(&xfer->lock, flags);
+ rpipe = xfer->ep->hcpriv;
+ /* Check the delayed list -> if there, release and complete */
+ spin_lock_irqsave(&wa->xfer_list_lock, flags2);
+ if (!list_empty(&xfer->list_node) && xfer->seg == NULL)
+ goto dequeue_delayed;
+ spin_unlock_irqrestore(&wa->xfer_list_lock, flags2);
+ if (xfer->seg == NULL) /* still hasn't reached */
+ goto out_unlock; /* setup(), enqueue_b() completes */
+ /* Ok, the xfer is in flight already, it's been setup and submitted.*/
+ __wa_xfer_abort(xfer);
+ for (cnt = 0; cnt < xfer->segs; cnt++) {
+ seg = xfer->seg[cnt];
+ switch (seg->status) {
+ case WA_SEG_NOTREADY:
+ case WA_SEG_READY:
+ printk(KERN_ERR "xfer %p#%u: dequeue bad state %u\n",
+ xfer, cnt, seg->status);
+ WARN_ON(1);
+ break;
+ case WA_SEG_DELAYED:
+ seg->status = WA_SEG_ABORTED;
+ spin_lock_irqsave(&rpipe->seg_lock, flags2);
+ list_del(&seg->list_node);
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ spin_unlock_irqrestore(&rpipe->seg_lock, flags2);
+ break;
+ case WA_SEG_SUBMITTED:
+ seg->status = WA_SEG_ABORTED;
+ usb_unlink_urb(&seg->urb);
+ if (xfer->is_inbound == 0)
+ usb_unlink_urb(seg->dto_urb);
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ break;
+ case WA_SEG_PENDING:
+ seg->status = WA_SEG_ABORTED;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ break;
+ case WA_SEG_DTI_PENDING:
+ usb_unlink_urb(wa->dti_urb);
+ seg->status = WA_SEG_ABORTED;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ break;
+ case WA_SEG_DONE:
+ case WA_SEG_ERROR:
+ case WA_SEG_ABORTED:
+ break;
+ }
+ }
+ xfer->result = urb->status; /* -ENOENT or -ECONNRESET */
+ __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+ return 0;
+
+out_unlock:
+ spin_unlock_irqrestore(&xfer->lock, flags);
+out:
+ d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+ return 0;
+
+dequeue_delayed:
+ list_del_init(&xfer->list_node);
+ spin_unlock_irqrestore(&wa->xfer_list_lock, flags2);
+ xfer->result = urb->status;
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ wa_xfer_giveback(xfer);
+ usb_put_urb(urb); /* we got a ref in enqueue() */
+ d_fnend(3, dev, "(wa %p, urb %p) = 0\n", wa, urb);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wa_urb_dequeue);
+
+/*
+ * Translation from WA status codes (WUSB1.0 Table 8.15) to errno
+ * codes
+ *
+ * Positive errno values are internal inconsistencies and should be
+ * flagged louder. Negative are to be passed up to the user in the
+ * normal way.
+ *
+ * @status: USB WA status code -- high two bits are stripped.
+ */
+static int wa_xfer_status_to_errno(u8 status)
+{
+ int errno;
+ u8 real_status = status;
+ static int xlat[] = {
+ [WA_XFER_STATUS_SUCCESS] = 0,
+ [WA_XFER_STATUS_HALTED] = -EPIPE,
+ [WA_XFER_STATUS_DATA_BUFFER_ERROR] = -ENOBUFS,
+ [WA_XFER_STATUS_BABBLE] = -EOVERFLOW,
+ [WA_XFER_RESERVED] = EINVAL,
+ [WA_XFER_STATUS_NOT_FOUND] = 0,
+ [WA_XFER_STATUS_INSUFFICIENT_RESOURCE] = -ENOMEM,
+ [WA_XFER_STATUS_TRANSACTION_ERROR] = -EILSEQ,
+ [WA_XFER_STATUS_ABORTED] = -EINTR,
+ [WA_XFER_STATUS_RPIPE_NOT_READY] = EINVAL,
+ [WA_XFER_INVALID_FORMAT] = EINVAL,
+ [WA_XFER_UNEXPECTED_SEGMENT_NUMBER] = EINVAL,
+ [WA_XFER_STATUS_RPIPE_TYPE_MISMATCH] = EINVAL,
+ };
+ status &= 0x3f;
+
+ if (status == 0)
+ return 0;
+ if (status >= ARRAY_SIZE(xlat)) {
+ if (printk_ratelimit())
+ printk(KERN_ERR "%s(): BUG? "
+ "Unknown WA transfer status 0x%02x\n",
+ __func__, real_status);
+ return -EINVAL;
+ }
+ errno = xlat[status];
+ if (unlikely(errno > 0)) {
+ if (printk_ratelimit())
+ printk(KERN_ERR "%s(): BUG? "
+ "Inconsistent WA status: 0x%02x\n",
+ __func__, real_status);
+ errno = -errno;
+ }
+ return errno;
+}
+
+/*
+ * Process a xfer result completion message
+ *
+ * inbound transfers: need to schedule a DTI read
+ *
+ * FIXME: this functio needs to be broken up in parts
+ */
+static void wa_xfer_result_chew(struct wahc *wa, struct wa_xfer *xfer)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+ unsigned long flags;
+ u8 seg_idx;
+ struct wa_seg *seg;
+ struct wa_rpipe *rpipe;
+ struct wa_xfer_result *xfer_result = wa->xfer_result;
+ u8 done = 0;
+ u8 usb_status;
+ unsigned rpipe_ready = 0;
+
+ d_fnstart(3, dev, "(wa %p xfer %p)\n", wa, xfer);
+ spin_lock_irqsave(&xfer->lock, flags);
+ seg_idx = xfer_result->bTransferSegment & 0x7f;
+ if (unlikely(seg_idx >= xfer->segs))
+ goto error_bad_seg;
+ seg = xfer->seg[seg_idx];
+ rpipe = xfer->ep->hcpriv;
+ usb_status = xfer_result->bTransferStatus;
+ d_printf(2, dev, "xfer %p#%u: bTransferStatus 0x%02x (seg %u)\n",
+ xfer, seg_idx, usb_status, seg->status);
+ if (seg->status == WA_SEG_ABORTED
+ || seg->status == WA_SEG_ERROR) /* already handled */
+ goto segment_aborted;
+ if (seg->status == WA_SEG_SUBMITTED) /* ops, got here */
+ seg->status = WA_SEG_PENDING; /* before wa_seg{_dto}_cb() */
+ if (seg->status != WA_SEG_PENDING) {
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: Bad segment state %u\n",
+ xfer, seg_idx, seg->status);
+ seg->status = WA_SEG_PENDING; /* workaround/"fix" it */
+ }
+ if (usb_status & 0x80) {
+ seg->result = wa_xfer_status_to_errno(usb_status);
+ dev_err(dev, "DTI: xfer %p#%u failed (0x%02x)\n",
+ xfer, seg->index, usb_status);
+ goto error_complete;
+ }
+ /* FIXME: we ignore warnings, tally them for stats */
+ if (usb_status & 0x40) /* Warning?... */
+ usb_status = 0; /* ... pass */
+ if (xfer->is_inbound) { /* IN data phase: read to buffer */
+ seg->status = WA_SEG_DTI_PENDING;
+ BUG_ON(wa->buf_in_urb->status == -EINPROGRESS);
+ if (xfer->is_dma) {
+ wa->buf_in_urb->transfer_dma =
+ xfer->urb->transfer_dma
+ + seg_idx * xfer->seg_size;
+ wa->buf_in_urb->transfer_flags
+ |= URB_NO_TRANSFER_DMA_MAP;
+ } else {
+ wa->buf_in_urb->transfer_buffer =
+ xfer->urb->transfer_buffer
+ + seg_idx * xfer->seg_size;
+ wa->buf_in_urb->transfer_flags
+ &= ~URB_NO_TRANSFER_DMA_MAP;
+ }
+ wa->buf_in_urb->transfer_buffer_length =
+ le32_to_cpu(xfer_result->dwTransferLength);
+ wa->buf_in_urb->context = seg;
+ result = usb_submit_urb(wa->buf_in_urb, GFP_ATOMIC);
+ if (result < 0)
+ goto error_submit_buf_in;
+ } else {
+ /* OUT data phase, complete it -- */
+ seg->status = WA_SEG_DONE;
+ seg->result = le32_to_cpu(xfer_result->dwTransferLength);
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ }
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ d_fnend(3, dev, "(wa %p xfer %p) = void\n", wa, xfer);
+ return;
+
+
+error_submit_buf_in:
+ if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "DTI: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: can't submit DTI data phase: %d\n",
+ xfer, seg_idx, result);
+ seg->result = result;
+error_complete:
+ seg->status = WA_SEG_ERROR;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ __wa_xfer_abort(xfer);
+ done = __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ d_fnend(3, dev, "(wa %p xfer %p) = void [segment/DTI-submit error]\n",
+ wa, xfer);
+ return;
+
+
+error_bad_seg:
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ wa_urb_dequeue(wa, xfer->urb);
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: bad segment\n", xfer, seg_idx);
+ if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS, EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "DTI: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ d_fnend(3, dev, "(wa %p xfer %p) = void [bad seg]\n", wa, xfer);
+ return;
+
+
+segment_aborted:
+ /* nothing to do, as the aborter did the completion */
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ d_fnend(3, dev, "(wa %p xfer %p) = void [segment aborted]\n",
+ wa, xfer);
+ return;
+
+}
+
+/*
+ * Callback for the IN data phase
+ *
+ * If succesful transition state; otherwise, take a note of the
+ * error, mark this segment done and try completion.
+ *
+ * Note we don't access until we are sure that the transfer hasn't
+ * been cancelled (ECONNRESET, ENOENT), which could mean that
+ * seg->xfer could be already gone.
+ */
+static void wa_buf_in_cb(struct urb *urb)
+{
+ struct wa_seg *seg = urb->context;
+ struct wa_xfer *xfer = seg->xfer;
+ struct wahc *wa;
+ struct device *dev;
+ struct wa_rpipe *rpipe;
+ unsigned rpipe_ready;
+ unsigned long flags;
+ u8 done = 0;
+
+ d_fnstart(3, NULL, "(urb %p [%d])\n", urb, urb->status);
+ switch (urb->status) {
+ case 0:
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ rpipe = xfer->ep->hcpriv;
+ d_printf(2, dev, "xfer %p#%u: data in done (%zu bytes)\n",
+ xfer, seg->index, (size_t)urb->actual_length);
+ seg->status = WA_SEG_DONE;
+ seg->result = urb->actual_length;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ done = __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ break;
+ case -ECONNRESET: /* URB unlinked; no need to do anything */
+ case -ENOENT: /* as it was done by the who unlinked us */
+ break;
+ default: /* Other errors ... */
+ spin_lock_irqsave(&xfer->lock, flags);
+ wa = xfer->wa;
+ dev = &wa->usb_iface->dev;
+ rpipe = xfer->ep->hcpriv;
+ if (printk_ratelimit())
+ dev_err(dev, "xfer %p#%u: data in error %d\n",
+ xfer, seg->index, urb->status);
+ if (edc_inc(&wa->nep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)){
+ dev_err(dev, "DTO: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ }
+ seg->status = WA_SEG_ERROR;
+ seg->result = urb->status;
+ xfer->segs_done++;
+ rpipe_ready = rpipe_avail_inc(rpipe);
+ __wa_xfer_abort(xfer);
+ done = __wa_xfer_is_done(xfer);
+ spin_unlock_irqrestore(&xfer->lock, flags);
+ if (done)
+ wa_xfer_completion(xfer);
+ if (rpipe_ready)
+ wa_xfer_delayed_run(rpipe);
+ }
+ d_fnend(3, NULL, "(urb %p [%d]) = void\n", urb, urb->status);
+}
+
+/*
+ * Handle an incoming transfer result buffer
+ *
+ * Given a transfer result buffer, it completes the transfer (possibly
+ * scheduling and buffer in read) and then resubmits the DTI URB for a
+ * new transfer result read.
+ *
+ *
+ * The xfer_result DTI URB state machine
+ *
+ * States: OFF | RXR (Read-Xfer-Result) | RBI (Read-Buffer-In)
+ *
+ * We start in OFF mode, the first xfer_result notification [through
+ * wa_handle_notif_xfer()] moves us to RXR by posting the DTI-URB to
+ * read.
+ *
+ * We receive a buffer -- if it is not a xfer_result, we complain and
+ * repost the DTI-URB. If it is a xfer_result then do the xfer seg
+ * request accounting. If it is an IN segment, we move to RBI and post
+ * a BUF-IN-URB to the right buffer. The BUF-IN-URB callback will
+ * repost the DTI-URB and move to RXR state. if there was no IN
+ * segment, it will repost the DTI-URB.
+ *
+ * We go back to OFF when we detect a ENOENT or ESHUTDOWN (or too many
+ * errors) in the URBs.
+ */
+static void wa_xfer_result_cb(struct urb *urb)
+{
+ int result;
+ struct wahc *wa = urb->context;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_xfer_result *xfer_result;
+ u32 xfer_id;
+ struct wa_xfer *xfer;
+ u8 usb_status;
+
+ d_fnstart(3, dev, "(%p)\n", wa);
+ BUG_ON(wa->dti_urb != urb);
+ switch (wa->dti_urb->status) {
+ case 0:
+ /* We have a xfer result buffer; check it */
+ d_printf(2, dev, "DTI: xfer result %d bytes at %p\n",
+ urb->actual_length, urb->transfer_buffer);
+ d_dump(3, dev, urb->transfer_buffer, urb->actual_length);
+ if (wa->dti_urb->actual_length != sizeof(*xfer_result)) {
+ dev_err(dev, "DTI Error: xfer result--bad size "
+ "xfer result (%d bytes vs %zu needed)\n",
+ urb->actual_length, sizeof(*xfer_result));
+ break;
+ }
+ xfer_result = wa->xfer_result;
+ if (xfer_result->hdr.bLength != sizeof(*xfer_result)) {
+ dev_err(dev, "DTI Error: xfer result--"
+ "bad header length %u\n",
+ xfer_result->hdr.bLength);
+ break;
+ }
+ if (xfer_result->hdr.bNotifyType != WA_XFER_RESULT) {
+ dev_err(dev, "DTI Error: xfer result--"
+ "bad header type 0x%02x\n",
+ xfer_result->hdr.bNotifyType);
+ break;
+ }
+ usb_status = xfer_result->bTransferStatus & 0x3f;
+ if (usb_status == WA_XFER_STATUS_ABORTED
+ || usb_status == WA_XFER_STATUS_NOT_FOUND)
+ /* taken care of already */
+ break;
+ xfer_id = xfer_result->dwTransferID;
+ xfer = wa_xfer_get_by_id(wa, xfer_id);
+ if (xfer == NULL) {
+ /* FIXME: transaction might have been cancelled */
+ dev_err(dev, "DTI Error: xfer result--"
+ "unknown xfer 0x%08x (status 0x%02x)\n",
+ xfer_id, usb_status);
+ break;
+ }
+ wa_xfer_result_chew(wa, xfer);
+ wa_xfer_put(xfer);
+ break;
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ case -ESHUTDOWN: /* going away! */
+ dev_dbg(dev, "DTI: going down! %d\n", urb->status);
+ goto out;
+ default:
+ /* Unknown error */
+ if (edc_inc(&wa->dti_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "DTI: URB max acceptable errors "
+ "exceeded, resetting device\n");
+ wa_reset_all(wa);
+ goto out;
+ }
+ if (printk_ratelimit())
+ dev_err(dev, "DTI: URB error %d\n", urb->status);
+ break;
+ }
+ /* Resubmit the DTI URB */
+ result = usb_submit_urb(wa->dti_urb, GFP_ATOMIC);
+ if (result < 0) {
+ dev_err(dev, "DTI Error: Could not submit DTI URB (%d), "
+ "resetting\n", result);
+ wa_reset_all(wa);
+ }
+out:
+ d_fnend(3, dev, "(%p) = void\n", wa);
+ return;
+}
+
+/*
+ * Transfer complete notification
+ *
+ * Called from the notif.c code. We get a notification on EP2 saying
+ * that some endpoint has some transfer result data available. We are
+ * about to read it.
+ *
+ * To speed up things, we always have a URB reading the DTI URB; we
+ * don't really set it up and start it until the first xfer complete
+ * notification arrives, which is what we do here.
+ *
+ * Follow up in wa_xfer_result_cb(), as that's where the whole state
+ * machine starts.
+ *
+ * So here we just initialize the DTI URB for reading transfer result
+ * notifications and also the buffer-in URB, for reading buffers. Then
+ * we just submit the DTI URB.
+ *
+ * @wa shall be referenced
+ */
+void wa_handle_notif_xfer(struct wahc *wa, struct wa_notif_hdr *notif_hdr)
+{
+ int result;
+ struct device *dev = &wa->usb_iface->dev;
+ struct wa_notif_xfer *notif_xfer;
+ const struct usb_endpoint_descriptor *dti_epd = wa->dti_epd;
+
+ d_fnstart(4, dev, "(%p, %p)\n", wa, notif_hdr);
+ notif_xfer = container_of(notif_hdr, struct wa_notif_xfer, hdr);
+ BUG_ON(notif_hdr->bNotifyType != WA_NOTIF_TRANSFER);
+
+ if ((0x80 | notif_xfer->bEndpoint) != dti_epd->bEndpointAddress) {
+ /* FIXME: hardcoded limitation, adapt */
+ dev_err(dev, "BUG: DTI ep is %u, not %u (hack me)\n",
+ notif_xfer->bEndpoint, dti_epd->bEndpointAddress);
+ goto error;
+ }
+ if (wa->dti_urb != NULL) /* DTI URB already started */
+ goto out;
+
+ wa->dti_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (wa->dti_urb == NULL) {
+ dev_err(dev, "Can't allocate DTI URB\n");
+ goto error_dti_urb_alloc;
+ }
+ usb_fill_bulk_urb(
+ wa->dti_urb, wa->usb_dev,
+ usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
+ wa->xfer_result, wa->xfer_result_size,
+ wa_xfer_result_cb, wa);
+
+ wa->buf_in_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (wa->buf_in_urb == NULL) {
+ dev_err(dev, "Can't allocate BUF-IN URB\n");
+ goto error_buf_in_urb_alloc;
+ }
+ usb_fill_bulk_urb(
+ wa->buf_in_urb, wa->usb_dev,
+ usb_rcvbulkpipe(wa->usb_dev, 0x80 | notif_xfer->bEndpoint),
+ NULL, 0, wa_buf_in_cb, wa);
+ result = usb_submit_urb(wa->dti_urb, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "DTI Error: Could not submit DTI URB (%d), "
+ "resetting\n", result);
+ goto error_dti_urb_submit;
+ }
+out:
+ d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
+ return;
+
+error_dti_urb_submit:
+ usb_put_urb(wa->buf_in_urb);
+error_buf_in_urb_alloc:
+ usb_put_urb(wa->dti_urb);
+ wa->dti_urb = NULL;
+error_dti_urb_alloc:
+error:
+ wa_reset_all(wa);
+ d_fnend(4, dev, "(%p, %p) = void\n", wa, notif_hdr);
+ return;
+}
--- /dev/null
+/*
+ * Wireless USB Host Controller
+ * sysfs glue, wusbcore module support and life cycle management
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Creation/destruction of wusbhc is split in two parts; that that
+ * doesn't require the HCD to be added (wusbhc_{create,destroy}) and
+ * the one that requires (phase B, wusbhc_b_{create,destroy}).
+ *
+ * This is so because usb_add_hcd() will start the HC, and thus, all
+ * the HC specific stuff has to be already initialiazed (like sysfs
+ * thingies).
+ */
+#include <linux/device.h>
+#include <linux/module.h>
+#include "wusbhc.h"
+
+/**
+ * Extract the wusbhc that corresponds to a USB Host Controller class device
+ *
+ * WARNING! Apply only if @dev is that of a
+ * wusbhc.usb_hcd.self->class_dev; otherwise, you loose.
+ */
+static struct wusbhc *usbhc_dev_to_wusbhc(struct device *dev)
+{
+ struct usb_bus *usb_bus = dev_get_drvdata(dev);
+ struct usb_hcd *usb_hcd = bus_to_hcd(usb_bus);
+ return usb_hcd_to_wusbhc(usb_hcd);
+}
+
+/*
+ * Show & store the current WUSB trust timeout
+ *
+ * We don't do locking--it is an 'atomic' value.
+ *
+ * The units that we store/show are always MILLISECONDS. However, the
+ * value of trust_timeout is jiffies.
+ */
+static ssize_t wusb_trust_timeout_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", wusbhc->trust_timeout);
+}
+
+static ssize_t wusb_trust_timeout_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+ ssize_t result = -ENOSYS;
+ unsigned trust_timeout;
+
+ result = sscanf(buf, "%u", &trust_timeout);
+ if (result != 1) {
+ result = -EINVAL;
+ goto out;
+ }
+ /* FIXME: maybe we should check for range validity? */
+ wusbhc->trust_timeout = trust_timeout;
+ cancel_delayed_work(&wusbhc->keep_alive_timer);
+ flush_workqueue(wusbd);
+ queue_delayed_work(wusbd, &wusbhc->keep_alive_timer,
+ (trust_timeout * CONFIG_HZ)/1000/2);
+out:
+ return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_trust_timeout, 0644, wusb_trust_timeout_show,
+ wusb_trust_timeout_store);
+
+/*
+ * Show & store the current WUSB CHID
+ */
+static ssize_t wusb_chid_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+ ssize_t result = 0;
+
+ if (wusbhc->wuie_host_info != NULL)
+ result += ckhdid_printf(buf, PAGE_SIZE,
+ &wusbhc->wuie_host_info->CHID);
+ return result;
+}
+
+/*
+ * Store a new CHID
+ *
+ * This will (FIXME) trigger many changes.
+ *
+ * - Send an all zeros CHID and it will stop the controller
+ * - Send a non-zero CHID and it will start it
+ * (unless it was started, it will just change the CHID,
+ * diconnecting all devices first).
+ *
+ * So first we scan the MMC we are sent and then we act on it. We
+ * read it in the same format as we print it, an ASCII string of 16
+ * hex bytes.
+ *
+ * See wusbhc_chid_set() for more info.
+ */
+static ssize_t wusb_chid_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct wusbhc *wusbhc = usbhc_dev_to_wusbhc(dev);
+ struct wusb_ckhdid chid;
+ ssize_t result;
+
+ result = sscanf(buf,
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx\n",
+ &chid.data[0] , &chid.data[1] ,
+ &chid.data[2] , &chid.data[3] ,
+ &chid.data[4] , &chid.data[5] ,
+ &chid.data[6] , &chid.data[7] ,
+ &chid.data[8] , &chid.data[9] ,
+ &chid.data[10], &chid.data[11],
+ &chid.data[12], &chid.data[13],
+ &chid.data[14], &chid.data[15]);
+ if (result != 16) {
+ dev_err(dev, "Unrecognized CHID (need 16 8-bit hex digits): "
+ "%d\n", (int)result);
+ return -EINVAL;
+ }
+ result = wusbhc_chid_set(wusbhc, &chid);
+ return result < 0 ? result : size;
+}
+static DEVICE_ATTR(wusb_chid, 0644, wusb_chid_show, wusb_chid_store);
+
+/* Group all the WUSBHC attributes */
+static struct attribute *wusbhc_attrs[] = {
+ &dev_attr_wusb_trust_timeout.attr,
+ &dev_attr_wusb_chid.attr,
+ NULL,
+};
+
+static struct attribute_group wusbhc_attr_group = {
+ .name = NULL, /* we want them in the same directory */
+ .attrs = wusbhc_attrs,
+};
+
+/*
+ * Create a wusbhc instance
+ *
+ * NOTEs:
+ *
+ * - assumes *wusbhc has been zeroed and wusbhc->usb_hcd has been
+ * initialized but not added.
+ *
+ * - fill out ports_max, mmcies_max and mmcie_{add,rm} before calling.
+ *
+ * - fill out wusbhc->uwb_rc and refcount it before calling
+ * - fill out the wusbhc->sec_modes array
+ */
+int wusbhc_create(struct wusbhc *wusbhc)
+{
+ int result = 0;
+
+ wusbhc->trust_timeout = WUSB_TRUST_TIMEOUT_MS;
+ mutex_init(&wusbhc->mutex);
+ result = wusbhc_mmcie_create(wusbhc);
+ if (result < 0)
+ goto error_mmcie_create;
+ result = wusbhc_devconnect_create(wusbhc);
+ if (result < 0)
+ goto error_devconnect_create;
+ result = wusbhc_rh_create(wusbhc);
+ if (result < 0)
+ goto error_rh_create;
+ result = wusbhc_sec_create(wusbhc);
+ if (result < 0)
+ goto error_sec_create;
+ return 0;
+
+error_sec_create:
+ wusbhc_rh_destroy(wusbhc);
+error_rh_create:
+ wusbhc_devconnect_destroy(wusbhc);
+error_devconnect_create:
+ wusbhc_mmcie_destroy(wusbhc);
+error_mmcie_create:
+ return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_create);
+
+static inline struct kobject *wusbhc_kobj(struct wusbhc *wusbhc)
+{
+ return &wusbhc->usb_hcd.self.controller->kobj;
+}
+
+/*
+ * Phase B of a wusbhc instance creation
+ *
+ * Creates fields that depend on wusbhc->usb_hcd having been
+ * added. This is where we create the sysfs files in
+ * /sys/class/usb_host/usb_hostX/.
+ *
+ * NOTE: Assumes wusbhc->usb_hcd has been already added by the upper
+ * layer (hwahc or whci)
+ */
+int wusbhc_b_create(struct wusbhc *wusbhc)
+{
+ int result = 0;
+ struct device *dev = wusbhc->usb_hcd.self.controller;
+
+ result = sysfs_create_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+ if (result < 0) {
+ dev_err(dev, "Cannot register WUSBHC attributes: %d\n", result);
+ goto error_create_attr_group;
+ }
+
+ result = wusbhc_pal_register(wusbhc);
+ if (result < 0)
+ goto error_pal_register;
+ return 0;
+
+error_pal_register:
+ sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+error_create_attr_group:
+ return result;
+}
+EXPORT_SYMBOL_GPL(wusbhc_b_create);
+
+void wusbhc_b_destroy(struct wusbhc *wusbhc)
+{
+ wusbhc_pal_unregister(wusbhc);
+ sysfs_remove_group(wusbhc_kobj(wusbhc), &wusbhc_attr_group);
+}
+EXPORT_SYMBOL_GPL(wusbhc_b_destroy);
+
+void wusbhc_destroy(struct wusbhc *wusbhc)
+{
+ wusbhc_sec_destroy(wusbhc);
+ wusbhc_rh_destroy(wusbhc);
+ wusbhc_devconnect_destroy(wusbhc);
+ wusbhc_mmcie_destroy(wusbhc);
+}
+EXPORT_SYMBOL_GPL(wusbhc_destroy);
+
+struct workqueue_struct *wusbd;
+EXPORT_SYMBOL_GPL(wusbd);
+
+/*
+ * WUSB Cluster ID allocation map
+ *
+ * Each WUSB bus in a channel is identified with a Cluster Id in the
+ * unauth address pace (WUSB1.0[4.3]). We take the range 0xe0 to 0xff
+ * (that's space for 31 WUSB controllers, as 0xff can't be taken). We
+ * start taking from 0xff, 0xfe, 0xfd... (hence the += or -= 0xff).
+ *
+ * For each one we taken, we pin it in the bitap
+ */
+#define CLUSTER_IDS 32
+static DECLARE_BITMAP(wusb_cluster_id_table, CLUSTER_IDS);
+static DEFINE_SPINLOCK(wusb_cluster_ids_lock);
+
+/*
+ * Get a WUSB Cluster ID
+ *
+ * Need to release with wusb_cluster_id_put() when done w/ it.
+ */
+/* FIXME: coordinate with the choose_addres() from the USB stack */
+/* we want to leave the top of the 128 range for cluster addresses and
+ * the bottom for device addresses (as we map them one on one with
+ * ports). */
+u8 wusb_cluster_id_get(void)
+{
+ u8 id;
+ spin_lock(&wusb_cluster_ids_lock);
+ id = find_first_zero_bit(wusb_cluster_id_table, CLUSTER_IDS);
+ if (id > CLUSTER_IDS) {
+ id = 0;
+ goto out;
+ }
+ set_bit(id, wusb_cluster_id_table);
+ id = (u8) 0xff - id;
+out:
+ spin_unlock(&wusb_cluster_ids_lock);
+ return id;
+
+}
+EXPORT_SYMBOL_GPL(wusb_cluster_id_get);
+
+/*
+ * Release a WUSB Cluster ID
+ *
+ * Obtained it with wusb_cluster_id_get()
+ */
+void wusb_cluster_id_put(u8 id)
+{
+ id = 0xff - id;
+ BUG_ON(id >= CLUSTER_IDS);
+ spin_lock(&wusb_cluster_ids_lock);
+ WARN_ON(!test_bit(id, wusb_cluster_id_table));
+ clear_bit(id, wusb_cluster_id_table);
+ spin_unlock(&wusb_cluster_ids_lock);
+}
+EXPORT_SYMBOL_GPL(wusb_cluster_id_put);
+
+/**
+ * wusbhc_giveback_urb - return an URB to the USB core
+ * @wusbhc: the host controller the URB is from.
+ * @urb: the URB.
+ * @status: the URB's status.
+ *
+ * Return an URB to the USB core doing some additional WUSB specific
+ * processing.
+ *
+ * - After a successful transfer, update the trust timeout timestamp
+ * for the WUSB device.
+ *
+ * - [WUSB] sections 4.13 and 7.5.1 specifies the stop retrasmittion
+ * condition for the WCONNECTACK_IE is that the host has observed
+ * the associated device responding to a control transfer.
+ */
+void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb, int status)
+{
+ struct wusb_dev *wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, urb->dev);
+
+ if (status == 0) {
+ wusb_dev->entry_ts = jiffies;
+
+ /* wusbhc_devconnect_acked() can't be called from from
+ atomic context so defer it to a work queue. */
+ if (!list_empty(&wusb_dev->cack_node))
+ queue_work(wusbd, &wusb_dev->devconnect_acked_work);
+ }
+
+ usb_hcd_giveback_urb(&wusbhc->usb_hcd, urb, status);
+}
+EXPORT_SYMBOL_GPL(wusbhc_giveback_urb);
+
+/**
+ * wusbhc_reset_all - reset the HC hardware
+ * @wusbhc: the host controller to reset.
+ *
+ * Request a full hardware reset of the chip. This will also reset
+ * the radio controller and any other PALs.
+ */
+void wusbhc_reset_all(struct wusbhc *wusbhc)
+{
+ uwb_rc_reset_all(wusbhc->uwb_rc);
+}
+EXPORT_SYMBOL_GPL(wusbhc_reset_all);
+
+static struct notifier_block wusb_usb_notifier = {
+ .notifier_call = wusb_usb_ncb,
+ .priority = INT_MAX /* Need to be called first of all */
+};
+
+static int __init wusbcore_init(void)
+{
+ int result;
+ result = wusb_crypto_init();
+ if (result < 0)
+ goto error_crypto_init;
+ /* WQ is singlethread because we need to serialize notifications */
+ wusbd = create_singlethread_workqueue("wusbd");
+ if (wusbd == NULL) {
+ result = -ENOMEM;
+ printk(KERN_ERR "WUSB-core: Cannot create wusbd workqueue\n");
+ goto error_wusbd_create;
+ }
+ usb_register_notify(&wusb_usb_notifier);
+ bitmap_zero(wusb_cluster_id_table, CLUSTER_IDS);
+ set_bit(0, wusb_cluster_id_table); /* reserve Cluster ID 0xff */
+ return 0;
+
+error_wusbd_create:
+ wusb_crypto_exit();
+error_crypto_init:
+ return result;
+
+}
+module_init(wusbcore_init);
+
+static void __exit wusbcore_exit(void)
+{
+ clear_bit(0, wusb_cluster_id_table);
+ if (!bitmap_empty(wusb_cluster_id_table, CLUSTER_IDS)) {
+ char buf[256];
+ bitmap_scnprintf(buf, sizeof(buf), wusb_cluster_id_table,
+ CLUSTER_IDS);
+ printk(KERN_ERR "BUG: WUSB Cluster IDs not released "
+ "on exit: %s\n", buf);
+ WARN_ON(1);
+ }
+ usb_unregister_notify(&wusb_usb_notifier);
+ destroy_workqueue(wusbd);
+ wusb_crypto_exit();
+}
+module_exit(wusbcore_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless USB core");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Wireless USB Host Controller
+ * Common infrastructure for WHCI and HWA WUSB-HC drivers
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver implements parts common to all Wireless USB Host
+ * Controllers (struct wusbhc, embedding a struct usb_hcd) and is used
+ * by:
+ *
+ * - hwahc: HWA, USB-dongle that implements a Wireless USB host
+ * controller, (Wireless USB 1.0 Host-Wire-Adapter specification).
+ *
+ * - whci: WHCI, a PCI card with a wireless host controller
+ * (Wireless Host Controller Interface 1.0 specification).
+ *
+ * Check out the Design-overview.txt file in the source documentation
+ * for other details on the implementation.
+ *
+ * Main blocks:
+ *
+ * rh Root Hub emulation (part of the HCD glue)
+ *
+ * devconnect Handle all the issues related to device connection,
+ * authentication, disconnection, timeout, reseting,
+ * keepalives, etc.
+ *
+ * mmc MMC IE broadcasting handling
+ *
+ * A host controller driver just initializes its stuff and as part of
+ * that, creates a 'struct wusbhc' instance that handles all the
+ * common WUSB mechanisms. Links in the function ops that are specific
+ * to it and then registers the host controller. Ready to run.
+ */
+
+#ifndef __WUSBHC_H__
+#define __WUSBHC_H__
+
+#include <linux/usb.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/kref.h>
+#include <linux/workqueue.h>
+/* FIXME: Yes, I know: BAD--it's not my fault the USB HC iface is not
+ * public */
+#include <linux/../../drivers/usb/core/hcd.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+
+
+/**
+ * Wireless USB device
+ *
+ * Describe a WUSB device connected to the cluster. This struct
+ * belongs to the 'struct wusb_port' it is attached to and it is
+ * responsible for putting and clearing the pointer to it.
+ *
+ * Note this "complements" the 'struct usb_device' that the usb_hcd
+ * keeps for each connected USB device. However, it extends some
+ * information that is not available (there is no hcpriv ptr in it!)
+ * *and* most importantly, it's life cycle is different. It is created
+ * as soon as we get a DN_Connect (connect request notification) from
+ * the device through the WUSB host controller; the USB stack doesn't
+ * create the device until we authenticate it. FIXME: this will
+ * change.
+ *
+ * @bos: This is allocated when the BOS descriptors are read from
+ * the device and freed upon the wusb_dev struct dying.
+ * @wusb_cap_descr: points into @bos, and has been verified to be size
+ * safe.
+ */
+struct wusb_dev {
+ struct kref refcnt;
+ struct wusbhc *wusbhc;
+ struct list_head cack_node; /* Connect-Ack list */
+ u8 port_idx;
+ u8 addr;
+ u8 beacon_type:4;
+ struct usb_encryption_descriptor ccm1_etd;
+ struct wusb_ckhdid cdid;
+ unsigned long entry_ts;
+ struct usb_bos_descriptor *bos;
+ struct usb_wireless_cap_descriptor *wusb_cap_descr;
+ struct uwb_mas_bm availability;
+ struct work_struct devconnect_acked_work;
+ struct urb *set_gtk_urb;
+ struct usb_ctrlrequest *set_gtk_req;
+ struct usb_device *usb_dev;
+};
+
+#define WUSB_DEV_ADDR_UNAUTH 0x80
+
+static inline void wusb_dev_init(struct wusb_dev *wusb_dev)
+{
+ kref_init(&wusb_dev->refcnt);
+ /* no need to init the cack_node */
+}
+
+extern void wusb_dev_destroy(struct kref *_wusb_dev);
+
+static inline struct wusb_dev *wusb_dev_get(struct wusb_dev *wusb_dev)
+{
+ kref_get(&wusb_dev->refcnt);
+ return wusb_dev;
+}
+
+static inline void wusb_dev_put(struct wusb_dev *wusb_dev)
+{
+ kref_put(&wusb_dev->refcnt, wusb_dev_destroy);
+}
+
+/**
+ * Wireless USB Host Controlller root hub "fake" ports
+ * (state and device information)
+ *
+ * Wireless USB is wireless, so there are no ports; but we
+ * fake'em. Each RC can connect a max of devices at the same time
+ * (given in the Wireless Adapter descriptor, bNumPorts or WHCI's
+ * caps), referred to in wusbhc->ports_max.
+ *
+ * See rh.c for more information.
+ *
+ * The @status and @change use the same bits as in USB2.0[11.24.2.7],
+ * so we don't have to do much when getting the port's status.
+ *
+ * WUSB1.0[7.1], USB2.0[11.24.2.7.1,fig 11-10],
+ * include/linux/usb_ch9.h (#define USB_PORT_STAT_*)
+ */
+struct wusb_port {
+ u16 status;
+ u16 change;
+ struct wusb_dev *wusb_dev; /* connected device's info */
+ unsigned reset_count;
+ u32 ptk_tkid;
+};
+
+/**
+ * WUSB Host Controller specifics
+ *
+ * All fields that are common to all Wireless USB controller types
+ * (HWA and WHCI) are grouped here. Host Controller
+ * functions/operations that only deal with general Wireless USB HC
+ * issues use this data type to refer to the host.
+ *
+ * @usb_hcd Instantiation of a USB host controller
+ * (initialized by upper layer [HWA=HC or WHCI].
+ *
+ * @dev Device that implements this; initialized by the
+ * upper layer (HWA-HC, WHCI...); this device should
+ * have a refcount.
+ *
+ * @trust_timeout After this time without hearing for device
+ * activity, we consider the device gone and we have to
+ * re-authenticate.
+ *
+ * Can be accessed w/o locking--however, read to a
+ * local variable then use.
+ *
+ * @chid WUSB Cluster Host ID: this is supposed to be a
+ * unique value that doesn't change across reboots (so
+ * that your devices do not require re-association).
+ *
+ * Read/Write protected by @mutex
+ *
+ * @dev_info This array has ports_max elements. It is used to
+ * give the HC information about the WUSB devices (see
+ * 'struct wusb_dev_info').
+ *
+ * For HWA we need to allocate it in heap; for WHCI it
+ * needs to be permanently mapped, so we keep it for
+ * both and make it easy. Call wusbhc->dev_info_set()
+ * to update an entry.
+ *
+ * @ports_max Number of simultaneous device connections (fake
+ * ports) this HC will take. Read-only.
+ *
+ * @port Array of port status for each fake root port. Guaranteed to
+ * always be the same lenght during device existence
+ * [this allows for some unlocked but referenced reading].
+ *
+ * @mmcies_max Max number of Information Elements this HC can send
+ * in its MMC. Read-only.
+ *
+ * @mmcie_add HC specific operation (WHCI or HWA) for adding an
+ * MMCIE.
+ *
+ * @mmcie_rm HC specific operation (WHCI or HWA) for removing an
+ * MMCIE.
+ *
+ * @enc_types Array which describes the encryptions methods
+ * supported by the host as described in WUSB1.0 --
+ * one entry per supported method. As of WUSB1.0 there
+ * is only four methods, we make space for eight just in
+ * case they decide to add some more (and pray they do
+ * it in sequential order). if 'enc_types[enc_method]
+ * != 0', then it is supported by the host. enc_method
+ * is USB_ENC_TYPE*.
+ *
+ * @set_ptk: Set the PTK and enable encryption for a device. Or, if
+ * the supplied key is NULL, disable encryption for that
+ * device.
+ *
+ * @set_gtk: Set the GTK to be used for all future broadcast packets
+ * (i.e., MMCs). With some hardware, setting the GTK may start
+ * MMC transmission.
+ *
+ * NOTE:
+ *
+ * - If wusb_dev->usb_dev is not NULL, then usb_dev is valid
+ * (wusb_dev has a refcount on it). Likewise, if usb_dev->wusb_dev
+ * is not NULL, usb_dev->wusb_dev is valid (usb_dev keeps a
+ * refcount on it).
+ *
+ * Most of the times when you need to use it, it will be non-NULL,
+ * so there is no real need to check for it (wusb_dev will
+ * dissapear before usb_dev).
+ *
+ * - The following fields need to be filled out before calling
+ * wusbhc_create(): ports_max, mmcies_max, mmcie_{add,rm}.
+ *
+ * - there is no wusbhc_init() method, we do everything in
+ * wusbhc_create().
+ *
+ * - Creation is done in two phases, wusbhc_create() and
+ * wusbhc_create_b(); b are the parts that need to be called after
+ * calling usb_hcd_add(&wusbhc->usb_hcd).
+ */
+struct wusbhc {
+ struct usb_hcd usb_hcd; /* HAS TO BE 1st */
+ struct device *dev;
+ struct uwb_rc *uwb_rc;
+ struct uwb_pal pal;
+
+ unsigned trust_timeout; /* in jiffies */
+ struct wuie_host_info *wuie_host_info; /* Includes CHID */
+
+ struct mutex mutex; /* locks everything else */
+ u16 cluster_id; /* Wireless USB Cluster ID */
+ struct wusb_port *port; /* Fake port status handling */
+ struct wusb_dev_info *dev_info; /* for Set Device Info mgmt */
+ u8 ports_max;
+ unsigned active:1; /* currently xmit'ing MMCs */
+ struct wuie_keep_alive keep_alive_ie; /* protected by mutex */
+ struct delayed_work keep_alive_timer;
+ struct list_head cack_list; /* Connect acknowledging */
+ size_t cack_count; /* protected by 'mutex' */
+ struct wuie_connect_ack cack_ie;
+ struct uwb_rsv *rsv; /* cluster bandwidth reservation */
+
+ struct mutex mmcie_mutex; /* MMC WUIE handling */
+ struct wuie_hdr **mmcie; /* WUIE array */
+ u8 mmcies_max;
+ /* FIXME: make wusbhc_ops? */
+ int (*start)(struct wusbhc *wusbhc);
+ void (*stop)(struct wusbhc *wusbhc);
+ int (*mmcie_add)(struct wusbhc *wusbhc, u8 interval, u8 repeat_cnt,
+ u8 handle, struct wuie_hdr *wuie);
+ int (*mmcie_rm)(struct wusbhc *wusbhc, u8 handle);
+ int (*dev_info_set)(struct wusbhc *, struct wusb_dev *wusb_dev);
+ int (*bwa_set)(struct wusbhc *wusbhc, s8 stream_index,
+ const struct uwb_mas_bm *);
+ int (*set_ptk)(struct wusbhc *wusbhc, u8 port_idx,
+ u32 tkid, const void *key, size_t key_size);
+ int (*set_gtk)(struct wusbhc *wusbhc,
+ u32 tkid, const void *key, size_t key_size);
+ int (*set_num_dnts)(struct wusbhc *wusbhc, u8 interval, u8 slots);
+
+ struct {
+ struct usb_key_descriptor descr;
+ u8 data[16]; /* GTK key data */
+ } __attribute__((packed)) gtk;
+ u8 gtk_index;
+ u32 gtk_tkid;
+ struct work_struct gtk_rekey_done_work;
+ int pending_set_gtks;
+
+ struct usb_encryption_descriptor *ccm1_etd;
+};
+
+#define usb_hcd_to_wusbhc(u) container_of((u), struct wusbhc, usb_hcd)
+
+
+extern int wusbhc_create(struct wusbhc *);
+extern int wusbhc_b_create(struct wusbhc *);
+extern void wusbhc_b_destroy(struct wusbhc *);
+extern void wusbhc_destroy(struct wusbhc *);
+extern int wusb_dev_sysfs_add(struct wusbhc *, struct usb_device *,
+ struct wusb_dev *);
+extern void wusb_dev_sysfs_rm(struct wusb_dev *);
+extern int wusbhc_sec_create(struct wusbhc *);
+extern int wusbhc_sec_start(struct wusbhc *);
+extern void wusbhc_sec_stop(struct wusbhc *);
+extern void wusbhc_sec_destroy(struct wusbhc *);
+extern void wusbhc_giveback_urb(struct wusbhc *wusbhc, struct urb *urb,
+ int status);
+void wusbhc_reset_all(struct wusbhc *wusbhc);
+
+int wusbhc_pal_register(struct wusbhc *wusbhc);
+void wusbhc_pal_unregister(struct wusbhc *wusbhc);
+
+/*
+ * Return @usb_dev's @usb_hcd (properly referenced) or NULL if gone
+ *
+ * @usb_dev: USB device, UNLOCKED and referenced (or otherwise, safe ptr)
+ *
+ * This is a safe assumption as @usb_dev->bus is referenced all the
+ * time during the @usb_dev life cycle.
+ */
+static inline struct usb_hcd *usb_hcd_get_by_usb_dev(struct usb_device *usb_dev)
+{
+ struct usb_hcd *usb_hcd;
+ usb_hcd = container_of(usb_dev->bus, struct usb_hcd, self);
+ return usb_get_hcd(usb_hcd);
+}
+
+/*
+ * Increment the reference count on a wusbhc.
+ *
+ * @wusbhc's life cycle is identical to that of the underlying usb_hcd.
+ */
+static inline struct wusbhc *wusbhc_get(struct wusbhc *wusbhc)
+{
+ return usb_get_hcd(&wusbhc->usb_hcd) ? wusbhc : NULL;
+}
+
+/*
+ * Return the wusbhc associated to a @usb_dev
+ *
+ * @usb_dev: USB device, UNLOCKED and referenced (or otherwise, safe ptr)
+ *
+ * @returns: wusbhc for @usb_dev; NULL if the @usb_dev is being torn down.
+ * WARNING: referenced at the usb_hcd level, unlocked
+ *
+ * FIXME: move offline
+ */
+static inline struct wusbhc *wusbhc_get_by_usb_dev(struct usb_device *usb_dev)
+{
+ struct wusbhc *wusbhc = NULL;
+ struct usb_hcd *usb_hcd;
+ if (usb_dev->devnum > 1 && !usb_dev->wusb) {
+ /* but root hubs */
+ dev_err(&usb_dev->dev, "devnum %d wusb %d\n", usb_dev->devnum,
+ usb_dev->wusb);
+ BUG_ON(usb_dev->devnum > 1 && !usb_dev->wusb);
+ }
+ usb_hcd = usb_hcd_get_by_usb_dev(usb_dev);
+ if (usb_hcd == NULL)
+ return NULL;
+ BUG_ON(usb_hcd->wireless == 0);
+ return wusbhc = usb_hcd_to_wusbhc(usb_hcd);
+}
+
+
+static inline void wusbhc_put(struct wusbhc *wusbhc)
+{
+ usb_put_hcd(&wusbhc->usb_hcd);
+}
+
+int wusbhc_start(struct wusbhc *wusbhc, const struct wusb_ckhdid *chid);
+void wusbhc_stop(struct wusbhc *wusbhc);
+extern int wusbhc_chid_set(struct wusbhc *, const struct wusb_ckhdid *);
+
+/* Device connect handling */
+extern int wusbhc_devconnect_create(struct wusbhc *);
+extern void wusbhc_devconnect_destroy(struct wusbhc *);
+extern int wusbhc_devconnect_start(struct wusbhc *wusbhc,
+ const struct wusb_ckhdid *chid);
+extern void wusbhc_devconnect_stop(struct wusbhc *wusbhc);
+extern int wusbhc_devconnect_auth(struct wusbhc *, u8);
+extern void wusbhc_handle_dn(struct wusbhc *, u8 srcaddr,
+ struct wusb_dn_hdr *dn_hdr, size_t size);
+extern int wusbhc_dev_reset(struct wusbhc *wusbhc, u8 port);
+extern void __wusbhc_dev_disable(struct wusbhc *wusbhc, u8 port);
+extern int wusb_usb_ncb(struct notifier_block *nb, unsigned long val,
+ void *priv);
+extern int wusb_set_dev_addr(struct wusbhc *wusbhc, struct wusb_dev *wusb_dev,
+ u8 addr);
+
+/* Wireless USB fake Root Hub methods */
+extern int wusbhc_rh_create(struct wusbhc *);
+extern void wusbhc_rh_destroy(struct wusbhc *);
+
+extern int wusbhc_rh_status_data(struct usb_hcd *, char *);
+extern int wusbhc_rh_control(struct usb_hcd *, u16, u16, u16, char *, u16);
+extern int wusbhc_rh_suspend(struct usb_hcd *);
+extern int wusbhc_rh_resume(struct usb_hcd *);
+extern int wusbhc_rh_start_port_reset(struct usb_hcd *, unsigned);
+
+/* MMC handling */
+extern int wusbhc_mmcie_create(struct wusbhc *);
+extern void wusbhc_mmcie_destroy(struct wusbhc *);
+extern int wusbhc_mmcie_set(struct wusbhc *, u8 interval, u8 repeat_cnt,
+ struct wuie_hdr *);
+extern void wusbhc_mmcie_rm(struct wusbhc *, struct wuie_hdr *);
+
+/* Bandwidth reservation */
+int wusbhc_rsv_establish(struct wusbhc *wusbhc);
+void wusbhc_rsv_terminate(struct wusbhc *wusbhc);
+
+/*
+ * I've always said
+ * I wanted a wedding in a church...
+ *
+ * but lately I've been thinking about
+ * the Botanical Gardens.
+ *
+ * We could do it by the tulips.
+ * It'll be beautiful
+ *
+ * --Security!
+ */
+extern int wusb_dev_sec_add(struct wusbhc *, struct usb_device *,
+ struct wusb_dev *);
+extern void wusb_dev_sec_rm(struct wusb_dev *) ;
+extern int wusb_dev_4way_handshake(struct wusbhc *, struct wusb_dev *,
+ struct wusb_ckhdid *ck);
+void wusbhc_gtk_rekey(struct wusbhc *wusbhc);
+
+
+/* WUSB Cluster ID handling */
+extern u8 wusb_cluster_id_get(void);
+extern void wusb_cluster_id_put(u8);
+
+/*
+ * wusb_port_by_idx - return the port associated to a zero-based port index
+ *
+ * NOTE: valid without locking as long as wusbhc is referenced (as the
+ * number of ports doesn't change). The data pointed to has to
+ * be verified though :)
+ */
+static inline struct wusb_port *wusb_port_by_idx(struct wusbhc *wusbhc,
+ u8 port_idx)
+{
+ return &wusbhc->port[port_idx];
+}
+
+/*
+ * wusb_port_no_to_idx - Convert port number (per usb_dev->portnum) to
+ * a port_idx.
+ *
+ * USB stack USB ports are 1 based!!
+ *
+ * NOTE: only valid for WUSB devices!!!
+ */
+static inline u8 wusb_port_no_to_idx(u8 port_no)
+{
+ return port_no - 1;
+}
+
+extern struct wusb_dev *__wusb_dev_get_by_usb_dev(struct wusbhc *,
+ struct usb_device *);
+
+/*
+ * Return a referenced wusb_dev given a @usb_dev
+ *
+ * Returns NULL if the usb_dev is being torn down.
+ *
+ * FIXME: move offline
+ */
+static inline
+struct wusb_dev *wusb_dev_get_by_usb_dev(struct usb_device *usb_dev)
+{
+ struct wusbhc *wusbhc;
+ struct wusb_dev *wusb_dev;
+ wusbhc = wusbhc_get_by_usb_dev(usb_dev);
+ if (wusbhc == NULL)
+ return NULL;
+ mutex_lock(&wusbhc->mutex);
+ wusb_dev = __wusb_dev_get_by_usb_dev(wusbhc, usb_dev);
+ mutex_unlock(&wusbhc->mutex);
+ wusbhc_put(wusbhc);
+ return wusb_dev;
+}
+
+/* Misc */
+
+extern struct workqueue_struct *wusbd;
+#endif /* #ifndef __WUSBHC_H__ */
--- /dev/null
+#
+# UWB device configuration
+#
+
+menuconfig UWB
+ tristate "Ultra Wideband devices (EXPERIMENTAL)"
+ depends on EXPERIMENTAL
+ depends on PCI
+ default n
+ help
+ UWB is a high-bandwidth, low-power, point-to-point radio
+ technology using a wide spectrum (3.1-10.6GHz). It is
+ optimized for in-room use (480Mbps at 2 meters, 110Mbps at
+ 10m). It serves as the transport layer for other protocols,
+ such as Wireless USB (WUSB), IP (WLP) and upcoming
+ Bluetooth and 1394
+
+ The topology is peer to peer; however, higher level
+ protocols (such as WUSB) might impose a master/slave
+ relationship.
+
+ Say Y here if your computer has UWB radio controllers (USB or PCI)
+ based. You will need to enable the radio controllers
+ below. It is ok to select all of them, no harm done.
+
+ For more help check the UWB and WUSB related files in
+ <file:Documentation/usb/>.
+
+ To compile the UWB stack as a module, choose M here.
+
+if UWB
+
+config UWB_HWA
+ tristate "UWB Radio Control driver for WUSB-compliant USB dongles (HWA)"
+ depends on USB
+ help
+ This driver enables the radio controller for HWA USB
+ devices. HWA stands for Host Wire Adapter, and it is a UWB
+ Radio Controller connected to your system via USB. Most of
+ them come with a Wireless USB host controller also.
+
+ To compile this driver select Y (built in) or M (module). It
+ is safe to select any even if you do not have the hardware.
+
+config UWB_WHCI
+ tristate "UWB Radio Control driver for WHCI-compliant cards"
+ depends on PCI
+ help
+ This driver enables the radio controller for WHCI cards.
+
+ WHCI is an specification developed by Intel
+ (http://www.intel.com/technology/comms/wusb/whci.htm) much
+ in the spirit of USB's EHCI, but for UWB and Wireless USB
+ radio/host controllers connected via memmory mapping (eg:
+ PCI). Most of these cards come also with a Wireless USB host
+ controller.
+
+ To compile this driver select Y (built in) or M (module). It
+ is safe to select any even if you do not have the hardware.
+
+config UWB_WLP
+ tristate "Support WiMedia Link Protocol (Ethernet/IP over UWB)"
+ depends on UWB && NET
+ help
+ This is a common library for drivers that implement
+ networking over UWB.
+
+config UWB_I1480U
+ tristate "Support for Intel Wireless UWB Link 1480 HWA"
+ depends on UWB_HWA
+ select FW_LOADER
+ help
+ This driver enables support for the i1480 when connected via
+ USB. It consists of a firmware uploader that will enable it
+ to behave as an HWA device.
+
+ To compile this driver select Y (built in) or M (module). It
+ is safe to select any even if you do not have the hardware.
+
+config UWB_I1480U_WLP
+ tristate "Support for Intel Wireless UWB Link 1480 HWA's WLP interface"
+ depends on UWB_I1480U && UWB_WLP && NET
+ help
+ This driver enables WLP support for the i1480 when connected via
+ USB. WLP is the WiMedia Link Protocol, or IP over UWB.
+
+ To compile this driver select Y (built in) or M (module). It
+ is safe to select any even if you don't have the hardware.
+
+endif # UWB
--- /dev/null
+obj-$(CONFIG_UWB) += uwb.o
+obj-$(CONFIG_UWB_WLP) += wlp/
+obj-$(CONFIG_UWB_WHCI) += umc.o whci.o whc-rc.o
+obj-$(CONFIG_UWB_HWA) += hwa-rc.o
+obj-$(CONFIG_UWB_I1480U) += i1480/
+
+uwb-objs := \
+ address.o \
+ beacon.o \
+ driver.o \
+ drp.o \
+ drp-avail.o \
+ drp-ie.o \
+ est.o \
+ ie.o \
+ lc-dev.o \
+ lc-rc.o \
+ neh.o \
+ pal.o \
+ reset.o \
+ rsv.o \
+ scan.o \
+ uwb-debug.o \
+ uwbd.o
+
+umc-objs := \
+ umc-bus.o \
+ umc-dev.o \
+ umc-drv.o
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Address management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/random.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+/** Device Address Management command */
+struct uwb_rc_cmd_dev_addr_mgmt {
+ struct uwb_rccb rccb;
+ u8 bmOperationType;
+ u8 baAddr[6];
+} __attribute__((packed));
+
+
+/**
+ * Low level command for setting/getting UWB radio's addresses
+ *
+ * @hwarc: HWA Radio Control interface instance
+ * @bmOperationType:
+ * Set/get, MAC/DEV (see WUSB1.0[8.6.2.2])
+ * @baAddr: address buffer--assumed to have enough data to hold
+ * the address type requested.
+ * @reply: Pointer to reply buffer (can be stack allocated)
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * @cmd has to be allocated because USB cannot grok USB or vmalloc
+ * buffers depending on your combination of host architecture.
+ */
+static
+int uwb_rc_dev_addr_mgmt(struct uwb_rc *rc,
+ u8 bmOperationType, const u8 *baAddr,
+ struct uwb_rc_evt_dev_addr_mgmt *reply)
+{
+ int result;
+ struct uwb_rc_cmd_dev_addr_mgmt *cmd;
+
+ result = -ENOMEM;
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ goto error_kzalloc;
+ cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+ cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_DEV_ADDR_MGMT);
+ cmd->bmOperationType = bmOperationType;
+ if (baAddr) {
+ size_t size = 0;
+ switch (bmOperationType >> 1) {
+ case 0: size = 2; break;
+ case 1: size = 6; break;
+ default: BUG();
+ }
+ memcpy(cmd->baAddr, baAddr, size);
+ }
+ reply->rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply->rceb.wEvent = UWB_RC_CMD_DEV_ADDR_MGMT;
+ result = uwb_rc_cmd(rc, "DEV-ADDR-MGMT",
+ &cmd->rccb, sizeof(*cmd),
+ &reply->rceb, sizeof(*reply));
+ if (result < 0)
+ goto error_cmd;
+ if (result < sizeof(*reply)) {
+ dev_err(&rc->uwb_dev.dev,
+ "DEV-ADDR-MGMT: not enough data replied: "
+ "%d vs %zu bytes needed\n", result, sizeof(*reply));
+ result = -ENOMSG;
+ } else if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev,
+ "DEV-ADDR-MGMT: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply->bResultCode),
+ reply->bResultCode);
+ result = -EIO;
+ } else
+ result = 0;
+error_cmd:
+ kfree(cmd);
+error_kzalloc:
+ return result;
+}
+
+
+/**
+ * Set the UWB RC MAC or device address.
+ *
+ * @rc: UWB Radio Controller
+ * @_addr: Pointer to address to write [assumed to be either a
+ * 'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
+ * @type: Type of address to set (UWB_ADDR_DEV or UWB_ADDR_MAC).
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Some anal retentivity here: even if both 'struct
+ * uwb_{dev,mac}_addr' have the actual byte array in the same offset
+ * and I could just pass _addr to hwarc_cmd_dev_addr_mgmt(), I prefer
+ * to use some syntatic sugar in case someday we decide to change the
+ * format of the structs. The compiler will optimize it out anyway.
+ */
+static int uwb_rc_addr_set(struct uwb_rc *rc,
+ const void *_addr, enum uwb_addr_type type)
+{
+ int result;
+ u8 bmOperationType = 0x1; /* Set address */
+ const struct uwb_dev_addr *dev_addr = _addr;
+ const struct uwb_mac_addr *mac_addr = _addr;
+ struct uwb_rc_evt_dev_addr_mgmt reply;
+ const u8 *baAddr;
+
+ result = -EINVAL;
+ switch (type) {
+ case UWB_ADDR_DEV:
+ baAddr = dev_addr->data;
+ break;
+ case UWB_ADDR_MAC:
+ baAddr = mac_addr->data;
+ bmOperationType |= 0x2;
+ break;
+ default:
+ return result;
+ }
+ return uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &reply);
+}
+
+
+/**
+ * Get the UWB radio's MAC or device address.
+ *
+ * @rc: UWB Radio Controller
+ * @_addr: Where to write the address data [assumed to be either a
+ * 'struct uwb_mac_addr *' or a 'struct uwb_dev_addr *'].
+ * @type: Type of address to get (UWB_ADDR_DEV or UWB_ADDR_MAC).
+ * @returns: 0 if ok (and *_addr set), < 0 errno code on error.
+ *
+ * See comment in uwb_rc_addr_set() about anal retentivity in the
+ * type handling of the address variables.
+ */
+static int uwb_rc_addr_get(struct uwb_rc *rc,
+ void *_addr, enum uwb_addr_type type)
+{
+ int result;
+ u8 bmOperationType = 0x0; /* Get address */
+ struct uwb_rc_evt_dev_addr_mgmt evt;
+ struct uwb_dev_addr *dev_addr = _addr;
+ struct uwb_mac_addr *mac_addr = _addr;
+ u8 *baAddr;
+
+ result = -EINVAL;
+ switch (type) {
+ case UWB_ADDR_DEV:
+ baAddr = dev_addr->data;
+ break;
+ case UWB_ADDR_MAC:
+ bmOperationType |= 0x2;
+ baAddr = mac_addr->data;
+ break;
+ default:
+ return result;
+ }
+ result = uwb_rc_dev_addr_mgmt(rc, bmOperationType, baAddr, &evt);
+ if (result == 0)
+ switch (type) {
+ case UWB_ADDR_DEV:
+ memcpy(&dev_addr->data, evt.baAddr,
+ sizeof(dev_addr->data));
+ break;
+ case UWB_ADDR_MAC:
+ memcpy(&mac_addr->data, evt.baAddr,
+ sizeof(mac_addr->data));
+ break;
+ default: /* shut gcc up */
+ BUG();
+ }
+ return result;
+}
+
+
+/** Get @rc's MAC address to @addr */
+int uwb_rc_mac_addr_get(struct uwb_rc *rc,
+ struct uwb_mac_addr *addr) {
+ return uwb_rc_addr_get(rc, addr, UWB_ADDR_MAC);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_mac_addr_get);
+
+
+/** Get @rc's device address to @addr */
+int uwb_rc_dev_addr_get(struct uwb_rc *rc,
+ struct uwb_dev_addr *addr) {
+ return uwb_rc_addr_get(rc, addr, UWB_ADDR_DEV);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_dev_addr_get);
+
+
+/** Set @rc's address to @addr */
+int uwb_rc_mac_addr_set(struct uwb_rc *rc,
+ const struct uwb_mac_addr *addr)
+{
+ int result = -EINVAL;
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = uwb_rc_addr_set(rc, addr, UWB_ADDR_MAC);
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+
+/** Set @rc's address to @addr */
+int uwb_rc_dev_addr_set(struct uwb_rc *rc,
+ const struct uwb_dev_addr *addr)
+{
+ int result = -EINVAL;
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = uwb_rc_addr_set(rc, addr, UWB_ADDR_DEV);
+ rc->uwb_dev.dev_addr = *addr;
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+/* Returns !0 if given address is already assigned to device. */
+int __uwb_mac_addr_assigned_check(struct device *dev, void *_addr)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_mac_addr *addr = _addr;
+
+ if (!uwb_mac_addr_cmp(addr, &uwb_dev->mac_addr))
+ return !0;
+ return 0;
+}
+
+/* Returns !0 if given address is already assigned to device. */
+int __uwb_dev_addr_assigned_check(struct device *dev, void *_addr)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_dev_addr *addr = _addr;
+ if (!uwb_dev_addr_cmp(addr, &uwb_dev->dev_addr))
+ return !0;
+ return 0;
+}
+
+/**
+ * uwb_dev_addr_assign - assigned a generated DevAddr to a radio controller
+ * @rc: the (local) radio controller device requiring a new DevAddr
+ *
+ * A new DevAddr is required when:
+ * - first setting up a radio controller
+ * - if the hardware reports a DevAddr conflict
+ *
+ * The DevAddr is randomly generated in the generated DevAddr range
+ * [0x100, 0xfeff]. The number of devices in a beacon group is limited
+ * by mMaxBPLength (96) so this address space will never be exhausted.
+ *
+ * [ECMA-368] 17.1.1, 17.16.
+ */
+int uwb_rc_dev_addr_assign(struct uwb_rc *rc)
+{
+ struct uwb_dev_addr new_addr;
+
+ do {
+ get_random_bytes(new_addr.data, sizeof(new_addr.data));
+ } while (new_addr.data[0] == 0x00 || new_addr.data[0] == 0xff
+ || __uwb_dev_addr_assigned(rc, &new_addr));
+
+ return uwb_rc_dev_addr_set(rc, &new_addr);
+}
+
+/**
+ * uwbd_evt_handle_rc_dev_addr_conflict - handle a DEV_ADDR_CONFLICT event
+ * @evt: the DEV_ADDR_CONFLICT notification from the radio controller
+ *
+ * A new (non-conflicting) DevAddr is assigned to the radio controller.
+ *
+ * [ECMA-368] 17.1.1.1.
+ */
+int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt)
+{
+ struct uwb_rc *rc = evt->rc;
+
+ return uwb_rc_dev_addr_assign(rc);
+}
+
+/*
+ * Print the 48-bit EUI MAC address of the radio controller when
+ * reading /sys/class/uwb_rc/XX/mac_address
+ */
+static ssize_t uwb_rc_mac_addr_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ struct uwb_mac_addr addr;
+ ssize_t result;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = uwb_rc_addr_get(rc, &addr, UWB_ADDR_MAC);
+ mutex_unlock(&rc->uwb_dev.mutex);
+ if (result >= 0) {
+ result = uwb_mac_addr_print(buf, UWB_ADDR_STRSIZE, &addr);
+ buf[result++] = '\n';
+ }
+ return result;
+}
+
+/*
+ * Parse a 48 bit address written to /sys/class/uwb_rc/XX/mac_address
+ * and if correct, set it.
+ */
+static ssize_t uwb_rc_mac_addr_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ struct uwb_mac_addr addr;
+ ssize_t result;
+
+ result = sscanf(buf, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx\n",
+ &addr.data[0], &addr.data[1], &addr.data[2],
+ &addr.data[3], &addr.data[4], &addr.data[5]);
+ if (result != 6) {
+ result = -EINVAL;
+ goto out;
+ }
+ if (is_multicast_ether_addr(addr.data)) {
+ dev_err(&rc->uwb_dev.dev, "refusing to set multicast "
+ "MAC address %s\n", buf);
+ result = -EINVAL;
+ goto out;
+ }
+ result = uwb_rc_mac_addr_set(rc, &addr);
+ if (result == 0)
+ rc->uwb_dev.mac_addr = addr;
+out:
+ return result < 0 ? result : size;
+}
+DEVICE_ATTR(mac_address, S_IRUGO | S_IWUSR, uwb_rc_mac_addr_show, uwb_rc_mac_addr_store);
+
+/** Print @addr to @buf, @return bytes written */
+size_t __uwb_addr_print(char *buf, size_t buf_size, const unsigned char *addr,
+ int type)
+{
+ size_t result;
+ if (type)
+ result = scnprintf(buf, buf_size,
+ "%02x:%02x:%02x:%02x:%02x:%02x",
+ addr[0], addr[1], addr[2],
+ addr[3], addr[4], addr[5]);
+ else
+ result = scnprintf(buf, buf_size, "%02x:%02x",
+ addr[1], addr[0]);
+ return result;
+}
+EXPORT_SYMBOL_GPL(__uwb_addr_print);
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Beacon management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/** Start Beaconing command structure */
+struct uwb_rc_cmd_start_beacon {
+ struct uwb_rccb rccb;
+ __le16 wBPSTOffset;
+ u8 bChannelNumber;
+} __attribute__((packed));
+
+
+static int uwb_rc_start_beacon(struct uwb_rc *rc, u16 bpst_offset, u8 channel)
+{
+ int result;
+ struct uwb_rc_cmd_start_beacon *cmd;
+ struct uwb_rc_evt_confirm reply;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+ cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+ cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_START_BEACON);
+ cmd->wBPSTOffset = cpu_to_le16(bpst_offset);
+ cmd->bChannelNumber = channel;
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_START_BEACON;
+ result = uwb_rc_cmd(rc, "START-BEACON", &cmd->rccb, sizeof(*cmd),
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev,
+ "START-BEACON: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+ result = -EIO;
+ }
+error_cmd:
+ kfree(cmd);
+ return result;
+}
+
+static int uwb_rc_stop_beacon(struct uwb_rc *rc)
+{
+ int result;
+ struct uwb_rccb *cmd;
+ struct uwb_rc_evt_confirm reply;
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+ cmd->bCommandType = UWB_RC_CET_GENERAL;
+ cmd->wCommand = cpu_to_le16(UWB_RC_CMD_STOP_BEACON);
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_STOP_BEACON;
+ result = uwb_rc_cmd(rc, "STOP-BEACON", cmd, sizeof(*cmd),
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev,
+ "STOP-BEACON: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+ result = -EIO;
+ }
+error_cmd:
+ kfree(cmd);
+ return result;
+}
+
+/*
+ * Start/stop beacons
+ *
+ * @rc: UWB Radio Controller to operate on
+ * @channel: UWB channel on which to beacon (WUSB[table
+ * 5-12]). If -1, stop beaconing.
+ * @bpst_offset: Beacon Period Start Time offset; FIXME-do zero
+ *
+ * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
+ * of a SET IE command after the device sent the first beacon that includes
+ * the IEs specified in the SET IE command. So, after we start beaconing we
+ * check if there is anything in the IE cache and call the SET IE command
+ * if needed.
+ */
+int uwb_rc_beacon(struct uwb_rc *rc, int channel, unsigned bpst_offset)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ if (channel < 0)
+ channel = -1;
+ if (channel == -1)
+ result = uwb_rc_stop_beacon(rc);
+ else {
+ /* channel >= 0...dah */
+ result = uwb_rc_start_beacon(rc, bpst_offset, channel);
+ if (result < 0)
+ goto out_up;
+ if (le16_to_cpu(rc->ies->wIELength) > 0) {
+ result = uwb_rc_set_ie(rc, rc->ies);
+ if (result < 0) {
+ dev_err(dev, "Cannot set new IE on device: "
+ "%d\n", result);
+ result = uwb_rc_stop_beacon(rc);
+ channel = -1;
+ bpst_offset = 0;
+ } else
+ result = 0;
+ }
+ }
+
+ if (result < 0)
+ goto out_up;
+ rc->beaconing = channel;
+
+ uwb_notify(rc, NULL, uwb_bg_joined(rc) ? UWB_NOTIF_BG_JOIN : UWB_NOTIF_BG_LEAVE);
+
+out_up:
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+/*
+ * Beacon cache
+ *
+ * The purpose of this is to speed up the lookup of becon information
+ * when a new beacon arrives. The UWB Daemon uses it also to keep a
+ * tab of which devices are in radio distance and which not. When a
+ * device's beacon stays present for more than a certain amount of
+ * time, it is considered a new, usable device. When a beacon ceases
+ * to be received for a certain amount of time, it is considered that
+ * the device is gone.
+ *
+ * FIXME: use an allocator for the entries
+ * FIXME: use something faster for search than a list
+ */
+
+struct uwb_beca uwb_beca = {
+ .list = LIST_HEAD_INIT(uwb_beca.list),
+ .mutex = __MUTEX_INITIALIZER(uwb_beca.mutex)
+};
+
+
+void uwb_bce_kfree(struct kref *_bce)
+{
+ struct uwb_beca_e *bce = container_of(_bce, struct uwb_beca_e, refcnt);
+
+ kfree(bce->be);
+ kfree(bce);
+}
+
+
+/* Find a beacon by dev addr in the cache */
+static
+struct uwb_beca_e *__uwb_beca_find_bydev(const struct uwb_dev_addr *dev_addr)
+{
+ struct uwb_beca_e *bce, *next;
+ list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ d_printf(6, NULL, "looking for addr %02x:%02x in %02x:%02x\n",
+ dev_addr->data[0], dev_addr->data[1],
+ bce->dev_addr.data[0], bce->dev_addr.data[1]);
+ if (!memcmp(&bce->dev_addr, dev_addr, sizeof(bce->dev_addr)))
+ goto out;
+ }
+ bce = NULL;
+out:
+ return bce;
+}
+
+/* Find a beacon by dev addr in the cache */
+static
+struct uwb_beca_e *__uwb_beca_find_bymac(const struct uwb_mac_addr *mac_addr)
+{
+ struct uwb_beca_e *bce, *next;
+ list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ if (!memcmp(bce->mac_addr, mac_addr->data,
+ sizeof(struct uwb_mac_addr)))
+ goto out;
+ }
+ bce = NULL;
+out:
+ return bce;
+}
+
+/**
+ * uwb_dev_get_by_devaddr - get a UWB device with a specific DevAddr
+ * @rc: the radio controller that saw the device
+ * @devaddr: DevAddr of the UWB device to find
+ *
+ * There may be more than one matching device (in the case of a
+ * DevAddr conflict), but only the first one is returned.
+ */
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+ const struct uwb_dev_addr *devaddr)
+{
+ struct uwb_dev *found = NULL;
+ struct uwb_beca_e *bce;
+
+ mutex_lock(&uwb_beca.mutex);
+ bce = __uwb_beca_find_bydev(devaddr);
+ if (bce)
+ found = uwb_dev_try_get(rc, bce->uwb_dev);
+ mutex_unlock(&uwb_beca.mutex);
+
+ return found;
+}
+
+/**
+ * uwb_dev_get_by_macaddr - get a UWB device with a specific EUI-48
+ * @rc: the radio controller that saw the device
+ * @devaddr: EUI-48 of the UWB device to find
+ */
+struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
+ const struct uwb_mac_addr *macaddr)
+{
+ struct uwb_dev *found = NULL;
+ struct uwb_beca_e *bce;
+
+ mutex_lock(&uwb_beca.mutex);
+ bce = __uwb_beca_find_bymac(macaddr);
+ if (bce)
+ found = uwb_dev_try_get(rc, bce->uwb_dev);
+ mutex_unlock(&uwb_beca.mutex);
+
+ return found;
+}
+
+/* Initialize a beacon cache entry */
+static void uwb_beca_e_init(struct uwb_beca_e *bce)
+{
+ mutex_init(&bce->mutex);
+ kref_init(&bce->refcnt);
+ stats_init(&bce->lqe_stats);
+ stats_init(&bce->rssi_stats);
+}
+
+/*
+ * Add a beacon to the cache
+ *
+ * @be: Beacon event information
+ * @bf: Beacon frame (part of b, really)
+ * @ts_jiffies: Timestamp (in jiffies) when the beacon was received
+ */
+struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *be,
+ struct uwb_beacon_frame *bf,
+ unsigned long ts_jiffies)
+{
+ struct uwb_beca_e *bce;
+
+ bce = kzalloc(sizeof(*bce), GFP_KERNEL);
+ if (bce == NULL)
+ return NULL;
+ uwb_beca_e_init(bce);
+ bce->ts_jiffies = ts_jiffies;
+ bce->uwb_dev = NULL;
+ list_add(&bce->node, &uwb_beca.list);
+ return bce;
+}
+
+/*
+ * Wipe out beacon entries that became stale
+ *
+ * Remove associated devicest too.
+ */
+void uwb_beca_purge(void)
+{
+ struct uwb_beca_e *bce, *next;
+ unsigned long expires;
+
+ mutex_lock(&uwb_beca.mutex);
+ list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ expires = bce->ts_jiffies + msecs_to_jiffies(beacon_timeout_ms);
+ if (time_after(jiffies, expires)) {
+ uwbd_dev_offair(bce);
+ list_del(&bce->node);
+ uwb_bce_put(bce);
+ }
+ }
+ mutex_unlock(&uwb_beca.mutex);
+}
+
+/* Clean up the whole beacon cache. Called on shutdown */
+void uwb_beca_release(void)
+{
+ struct uwb_beca_e *bce, *next;
+ mutex_lock(&uwb_beca.mutex);
+ list_for_each_entry_safe(bce, next, &uwb_beca.list, node) {
+ list_del(&bce->node);
+ uwb_bce_put(bce);
+ }
+ mutex_unlock(&uwb_beca.mutex);
+}
+
+static void uwb_beacon_print(struct uwb_rc *rc, struct uwb_rc_evt_beacon *be,
+ struct uwb_beacon_frame *bf)
+{
+ char macbuf[UWB_ADDR_STRSIZE];
+ char devbuf[UWB_ADDR_STRSIZE];
+ char dstbuf[UWB_ADDR_STRSIZE];
+
+ uwb_mac_addr_print(macbuf, sizeof(macbuf), &bf->Device_Identifier);
+ uwb_dev_addr_print(devbuf, sizeof(devbuf), &bf->hdr.SrcAddr);
+ uwb_dev_addr_print(dstbuf, sizeof(dstbuf), &bf->hdr.DestAddr);
+ dev_info(&rc->uwb_dev.dev,
+ "BEACON from %s to %s (ch%u offset %u slot %u MAC %s)\n",
+ devbuf, dstbuf, be->bChannelNumber, be->wBPSTOffset,
+ bf->Beacon_Slot_Number, macbuf);
+}
+
+/*
+ * @bce: beacon cache entry, referenced
+ */
+ssize_t uwb_bce_print_IEs(struct uwb_dev *uwb_dev, struct uwb_beca_e *bce,
+ char *buf, size_t size)
+{
+ ssize_t result = 0;
+ struct uwb_rc_evt_beacon *be;
+ struct uwb_beacon_frame *bf;
+ struct uwb_buf_ctx ctx = {
+ .buf = buf,
+ .bytes = 0,
+ .size = size
+ };
+
+ mutex_lock(&bce->mutex);
+ be = bce->be;
+ if (be == NULL)
+ goto out;
+ bf = (void *) be->BeaconInfo;
+ uwb_ie_for_each(uwb_dev, uwb_ie_dump_hex, &ctx,
+ bf->IEData, be->wBeaconInfoLength - sizeof(*bf));
+ result = ctx.bytes;
+out:
+ mutex_unlock(&bce->mutex);
+ return result;
+}
+
+/*
+ * Verify that the beacon event, frame and IEs are ok
+ */
+static int uwb_verify_beacon(struct uwb_rc *rc, struct uwb_event *evt,
+ struct uwb_rc_evt_beacon *be)
+{
+ int result = -EINVAL;
+ struct uwb_beacon_frame *bf;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ /* Is there enough data to decode a beacon frame? */
+ if (evt->notif.size < sizeof(*be) + sizeof(*bf)) {
+ dev_err(dev, "BEACON event: Not enough data to decode "
+ "(%zu vs %zu bytes needed)\n", evt->notif.size,
+ sizeof(*be) + sizeof(*bf));
+ goto error;
+ }
+ /* FIXME: make sure beacon frame IEs are fine and that the whole thing
+ * is consistent */
+ result = 0;
+error:
+ return result;
+}
+
+/*
+ * Handle UWB_RC_EVT_BEACON events
+ *
+ * We check the beacon cache to see how the received beacon fares. If
+ * is there already we refresh the timestamp. If not we create a new
+ * entry.
+ *
+ * According to the WHCI and WUSB specs, only one beacon frame is
+ * allowed per notification block, so we don't bother about scanning
+ * for more.
+ */
+int uwbd_evt_handle_rc_beacon(struct uwb_event *evt)
+{
+ int result = -EINVAL;
+ struct uwb_rc *rc;
+ struct uwb_rc_evt_beacon *be;
+ struct uwb_beacon_frame *bf;
+ struct uwb_beca_e *bce;
+ unsigned long last_ts;
+
+ rc = evt->rc;
+ be = container_of(evt->notif.rceb, struct uwb_rc_evt_beacon, rceb);
+ result = uwb_verify_beacon(rc, evt, be);
+ if (result < 0)
+ return result;
+
+ /* FIXME: handle alien beacons. */
+ if (be->bBeaconType == UWB_RC_BEACON_TYPE_OL_ALIEN ||
+ be->bBeaconType == UWB_RC_BEACON_TYPE_NOL_ALIEN) {
+ return -ENOSYS;
+ }
+
+ bf = (struct uwb_beacon_frame *) be->BeaconInfo;
+
+ /*
+ * Drop beacons from devices with a NULL EUI-48 -- they cannot
+ * be uniquely identified.
+ *
+ * It's expected that these will all be WUSB devices and they
+ * have a WUSB specific connection method so ignoring them
+ * here shouldn't be a problem.
+ */
+ if (uwb_mac_addr_bcast(&bf->Device_Identifier))
+ return 0;
+
+ mutex_lock(&uwb_beca.mutex);
+ bce = __uwb_beca_find_bymac(&bf->Device_Identifier);
+ if (bce == NULL) {
+ /* Not in there, a new device is pinging */
+ uwb_beacon_print(evt->rc, be, bf);
+ bce = __uwb_beca_add(be, bf, evt->ts_jiffies);
+ if (bce == NULL) {
+ mutex_unlock(&uwb_beca.mutex);
+ return -ENOMEM;
+ }
+ }
+ mutex_unlock(&uwb_beca.mutex);
+
+ mutex_lock(&bce->mutex);
+ /* purge old beacon data */
+ kfree(bce->be);
+
+ last_ts = bce->ts_jiffies;
+
+ /* Update commonly used fields */
+ bce->ts_jiffies = evt->ts_jiffies;
+ bce->be = be;
+ bce->dev_addr = bf->hdr.SrcAddr;
+ bce->mac_addr = &bf->Device_Identifier;
+ be->wBPSTOffset = le16_to_cpu(be->wBPSTOffset);
+ be->wBeaconInfoLength = le16_to_cpu(be->wBeaconInfoLength);
+ stats_add_sample(&bce->lqe_stats, be->bLQI - 7);
+ stats_add_sample(&bce->rssi_stats, be->bRSSI + 18);
+
+ /*
+ * This might be a beacon from a new device.
+ */
+ if (bce->uwb_dev == NULL)
+ uwbd_dev_onair(evt->rc, bce);
+
+ mutex_unlock(&bce->mutex);
+
+ return 1; /* we keep the event data */
+}
+
+/*
+ * Handle UWB_RC_EVT_BEACON_SIZE events
+ *
+ * XXXXX
+ */
+int uwbd_evt_handle_rc_beacon_size(struct uwb_event *evt)
+{
+ int result = -EINVAL;
+ struct device *dev = &evt->rc->uwb_dev.dev;
+ struct uwb_rc_evt_beacon_size *bs;
+
+ /* Is there enough data to decode the event? */
+ if (evt->notif.size < sizeof(*bs)) {
+ dev_err(dev, "BEACON SIZE notification: Not enough data to "
+ "decode (%zu vs %zu bytes needed)\n",
+ evt->notif.size, sizeof(*bs));
+ goto error;
+ }
+ bs = container_of(evt->notif.rceb, struct uwb_rc_evt_beacon_size, rceb);
+ if (0)
+ dev_info(dev, "Beacon size changed to %u bytes "
+ "(FIXME: action?)\n", le16_to_cpu(bs->wNewBeaconSize));
+ else {
+ /* temporary hack until we do something with this message... */
+ static unsigned count;
+ if (++count % 1000 == 0)
+ dev_info(dev, "Beacon size changed %u times "
+ "(FIXME: action?)\n", count);
+ }
+ result = 0;
+error:
+ return result;
+}
+
+/**
+ * uwbd_evt_handle_rc_bp_slot_change - handle a BP_SLOT_CHANGE event
+ * @evt: the BP_SLOT_CHANGE notification from the radio controller
+ *
+ * If the event indicates that no beacon period slots were available
+ * then radio controller has transitioned to a non-beaconing state.
+ * Otherwise, simply save the current beacon slot.
+ */
+int uwbd_evt_handle_rc_bp_slot_change(struct uwb_event *evt)
+{
+ struct uwb_rc *rc = evt->rc;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_evt_bp_slot_change *bpsc;
+
+ if (evt->notif.size < sizeof(*bpsc)) {
+ dev_err(dev, "BP SLOT CHANGE event: Not enough data\n");
+ return -EINVAL;
+ }
+ bpsc = container_of(evt->notif.rceb, struct uwb_rc_evt_bp_slot_change, rceb);
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ if (uwb_rc_evt_bp_slot_change_no_slot(bpsc)) {
+ dev_info(dev, "stopped beaconing: No free slots in BP\n");
+ rc->beaconing = -1;
+ } else
+ rc->uwb_dev.beacon_slot = uwb_rc_evt_bp_slot_change_slot_num(bpsc);
+ mutex_unlock(&rc->uwb_dev.mutex);
+
+ return 0;
+}
+
+/**
+ * Handle UWB_RC_EVT_BPOIE_CHANGE events
+ *
+ * XXXXX
+ */
+struct uwb_ie_bpo {
+ struct uwb_ie_hdr hdr;
+ u8 bp_length;
+ u8 data[];
+} __attribute__((packed));
+
+int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *evt)
+{
+ int result = -EINVAL;
+ struct device *dev = &evt->rc->uwb_dev.dev;
+ struct uwb_rc_evt_bpoie_change *bpoiec;
+ struct uwb_ie_bpo *bpoie;
+ static unsigned count; /* FIXME: this is a temp hack */
+ size_t iesize;
+
+ /* Is there enough data to decode it? */
+ if (evt->notif.size < sizeof(*bpoiec)) {
+ dev_err(dev, "BPOIEC notification: Not enough data to "
+ "decode (%zu vs %zu bytes needed)\n",
+ evt->notif.size, sizeof(*bpoiec));
+ goto error;
+ }
+ bpoiec = container_of(evt->notif.rceb, struct uwb_rc_evt_bpoie_change, rceb);
+ iesize = le16_to_cpu(bpoiec->wBPOIELength);
+ if (iesize < sizeof(*bpoie)) {
+ dev_err(dev, "BPOIEC notification: Not enough IE data to "
+ "decode (%zu vs %zu bytes needed)\n",
+ iesize, sizeof(*bpoie));
+ goto error;
+ }
+ if (++count % 1000 == 0) /* Lame placeholder */
+ dev_info(dev, "BPOIE: %u changes received\n", count);
+ /*
+ * FIXME: At this point we should go over all the IEs in the
+ * bpoiec->BPOIE array and act on each.
+ */
+ result = 0;
+error:
+ return result;
+}
+
+/**
+ * uwb_bg_joined - is the RC in a beacon group?
+ * @rc: the radio controller
+ *
+ * Returns true if the radio controller is in a beacon group (even if
+ * it's the sole member).
+ */
+int uwb_bg_joined(struct uwb_rc *rc)
+{
+ return rc->beaconing != -1;
+}
+EXPORT_SYMBOL_GPL(uwb_bg_joined);
+
+/*
+ * Print beaconing state.
+ */
+static ssize_t uwb_rc_beacon_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ ssize_t result;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = sprintf(buf, "%d\n", rc->beaconing);
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+/*
+ * Start beaconing on the specified channel, or stop beaconing.
+ *
+ * The BPST offset of when to start searching for a beacon group to
+ * join may be specified.
+ */
+static ssize_t uwb_rc_beacon_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ int channel;
+ unsigned bpst_offset = 0;
+ ssize_t result = -EINVAL;
+
+ result = sscanf(buf, "%d %u\n", &channel, &bpst_offset);
+ if (result >= 1)
+ result = uwb_rc_beacon(rc, channel, bpst_offset);
+
+ return result < 0 ? result : size;
+}
+DEVICE_ATTR(beacon, S_IRUGO | S_IWUSR, uwb_rc_beacon_show, uwb_rc_beacon_store);
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Driver initialization, etc
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Life cycle: FIXME: explain
+ *
+ * UWB radio controller:
+ *
+ * 1. alloc a uwb_rc, zero it
+ * 2. call uwb_rc_init() on it to set it up + ops (won't do any
+ * kind of allocation)
+ * 3. register (now it is owned by the UWB stack--deregister before
+ * freeing/destroying).
+ * 4. It lives on it's own now (UWB stack handles)--when it
+ * disconnects, call unregister()
+ * 5. free it.
+ *
+ * Make sure you have a reference to the uwb_rc before calling
+ * any of the UWB API functions.
+ *
+ * TODO:
+ *
+ * 1. Locking and life cycle management is crappy still. All entry
+ * points to the UWB HCD API assume you have a reference on the
+ * uwb_rc structure and that it won't go away. They mutex lock it
+ * before doing anything.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include <linux/random.h>
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+/* UWB stack attributes (or 'global' constants) */
+
+
+/**
+ * If a beacon dissapears for longer than this, then we consider the
+ * device who was represented by that beacon to be gone.
+ *
+ * ECMA-368[17.2.3, last para] establishes that a device must not
+ * consider a device to be its neighbour if he doesn't receive a beacon
+ * for more than mMaxLostBeacons. mMaxLostBeacons is defined in
+ * ECMA-368[17.16] as 3; because we can get only one beacon per
+ * superframe, that'd be 3 * 65ms = 195 ~ 200 ms. Let's give it time
+ * for jitter and stuff and make it 500 ms.
+ */
+unsigned long beacon_timeout_ms = 500;
+
+static
+ssize_t beacon_timeout_ms_show(struct class *class, char *buf)
+{
+ return scnprintf(buf, PAGE_SIZE, "%lu\n", beacon_timeout_ms);
+}
+
+static
+ssize_t beacon_timeout_ms_store(struct class *class,
+ const char *buf, size_t size)
+{
+ unsigned long bt;
+ ssize_t result;
+ result = sscanf(buf, "%lu", &bt);
+ if (result != 1)
+ return -EINVAL;
+ beacon_timeout_ms = bt;
+ return size;
+}
+
+static struct class_attribute uwb_class_attrs[] = {
+ __ATTR(beacon_timeout_ms, S_IWUSR | S_IRUGO,
+ beacon_timeout_ms_show, beacon_timeout_ms_store),
+ __ATTR_NULL,
+};
+
+/** Device model classes */
+struct class uwb_rc_class = {
+ .name = "uwb_rc",
+ .class_attrs = uwb_class_attrs,
+};
+
+
+static int __init uwb_subsys_init(void)
+{
+ int result = 0;
+
+ result = uwb_est_create();
+ if (result < 0) {
+ printk(KERN_ERR "uwb: Can't initialize EST subsystem\n");
+ goto error_est_init;
+ }
+
+ result = class_register(&uwb_rc_class);
+ if (result < 0)
+ goto error_uwb_rc_class_register;
+ uwbd_start();
+ uwb_dbg_init();
+ return 0;
+
+error_uwb_rc_class_register:
+ uwb_est_destroy();
+error_est_init:
+ return result;
+}
+module_init(uwb_subsys_init);
+
+static void __exit uwb_subsys_exit(void)
+{
+ uwb_dbg_exit();
+ uwbd_stop();
+ class_unregister(&uwb_rc_class);
+ uwb_est_destroy();
+ return;
+}
+module_exit(uwb_subsys_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Ultra Wide Band core");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Ultra Wide Band
+ * DRP availability management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ *
+ * Manage DRP Availability (the MAS available for DRP
+ * reservations). Thus:
+ *
+ * - Handle DRP Availability Change notifications
+ *
+ * - Allow the reservation manager to indicate MAS reserved/released
+ * by local (owned by/targeted at the radio controller)
+ * reservations.
+ *
+ * - Based on the two sources above, generate a DRP Availability IE to
+ * be included in the beacon.
+ *
+ * See also the documentation for struct uwb_drp_avail.
+ */
+
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/bitmap.h>
+#include "uwb-internal.h"
+
+/**
+ * uwb_drp_avail_init - initialize an RC's MAS availability
+ *
+ * All MAS are available initially. The RC will inform use which
+ * slots are used for the BP (it may change in size).
+ */
+void uwb_drp_avail_init(struct uwb_rc *rc)
+{
+ bitmap_fill(rc->drp_avail.global, UWB_NUM_MAS);
+ bitmap_fill(rc->drp_avail.local, UWB_NUM_MAS);
+ bitmap_fill(rc->drp_avail.pending, UWB_NUM_MAS);
+}
+
+/*
+ * Determine MAS available for new local reservations.
+ *
+ * avail = global & local & pending
+ */
+static void uwb_drp_available(struct uwb_rc *rc, struct uwb_mas_bm *avail)
+{
+ bitmap_and(avail->bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
+ bitmap_and(avail->bm, avail->bm, rc->drp_avail.pending, UWB_NUM_MAS);
+}
+
+/**
+ * uwb_drp_avail_reserve_pending - reserve MAS for a new reservation
+ * @rc: the radio controller
+ * @mas: the MAS to reserve
+ *
+ * Returns 0 on success, or -EBUSY if the MAS requested aren't available.
+ */
+int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+ struct uwb_mas_bm avail;
+
+ uwb_drp_available(rc, &avail);
+ if (!bitmap_subset(mas->bm, avail.bm, UWB_NUM_MAS))
+ return -EBUSY;
+
+ bitmap_andnot(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+ return 0;
+}
+
+/**
+ * uwb_drp_avail_reserve - reserve MAS for an established reservation
+ * @rc: the radio controller
+ * @mas: the MAS to reserve
+ */
+void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+ bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+ bitmap_andnot(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
+ rc->drp_avail.ie_valid = false;
+}
+
+/**
+ * uwb_drp_avail_release - release MAS from a pending or established reservation
+ * @rc: the radio controller
+ * @mas: the MAS to release
+ */
+void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas)
+{
+ bitmap_or(rc->drp_avail.local, rc->drp_avail.local, mas->bm, UWB_NUM_MAS);
+ bitmap_or(rc->drp_avail.pending, rc->drp_avail.pending, mas->bm, UWB_NUM_MAS);
+ rc->drp_avail.ie_valid = false;
+}
+
+/**
+ * uwb_drp_avail_ie_update - update the DRP Availability IE
+ * @rc: the radio controller
+ *
+ * avail = global & local
+ */
+void uwb_drp_avail_ie_update(struct uwb_rc *rc)
+{
+ struct uwb_mas_bm avail;
+
+ bitmap_and(avail.bm, rc->drp_avail.global, rc->drp_avail.local, UWB_NUM_MAS);
+
+ rc->drp_avail.ie.hdr.element_id = UWB_IE_DRP_AVAILABILITY;
+ rc->drp_avail.ie.hdr.length = UWB_NUM_MAS / 8;
+ uwb_mas_bm_copy_le(rc->drp_avail.ie.bmp, &avail);
+ rc->drp_avail.ie_valid = true;
+}
+
+/**
+ * Create an unsigned long from a buffer containing a byte stream.
+ *
+ * @array: pointer to buffer
+ * @itr: index of buffer from where we start
+ * @len: the buffer's remaining size may not be exact multiple of
+ * sizeof(unsigned long), @len is the length of buffer that needs
+ * to be converted. This will be sizeof(unsigned long) or smaller
+ * (BUG if not). If it is smaller then we will pad the remaining
+ * space of the result with zeroes.
+ */
+static
+unsigned long get_val(u8 *array, size_t itr, size_t len)
+{
+ unsigned long val = 0;
+ size_t top = itr + len;
+
+ BUG_ON(len > sizeof(val));
+
+ while (itr < top) {
+ val <<= 8;
+ val |= array[top - 1];
+ top--;
+ }
+ val <<= 8 * (sizeof(val) - len); /* padding */
+ return val;
+}
+
+/**
+ * Initialize bitmap from data buffer.
+ *
+ * The bitmap to be converted could come from a IE, for example a
+ * DRP Availability IE.
+ * From ECMA-368 1.0 [16.8.7]: "
+ * octets: 1 1 N * (0 to 32)
+ * Element ID Length (=N) DRP Availability Bitmap
+ *
+ * The DRP Availability Bitmap field is up to 256 bits long, one
+ * bit for each MAS in the superframe, where the least-significant
+ * bit of the field corresponds to the first MAS in the superframe
+ * and successive bits correspond to successive MASs."
+ *
+ * The DRP Availability bitmap is in octets from 0 to 32, so octet
+ * 32 contains bits for MAS 1-8, etc. If the bitmap is smaller than 32
+ * octets, the bits in octets not included at the end of the bitmap are
+ * treated as zero. In this case (when the bitmap is smaller than 32
+ * octets) the MAS represented range from MAS 1 to MAS (size of bitmap)
+ * with the last octet still containing bits for MAS 1-8, etc.
+ *
+ * For example:
+ * F00F0102 03040506 0708090A 0B0C0D0E 0F010203
+ * ^^^^
+ * ||||
+ * ||||
+ * |||\LSB of byte is MAS 9
+ * ||\MSB of byte is MAS 16
+ * |\LSB of first byte is MAS 1
+ * \ MSB of byte is MAS 8
+ *
+ * An example of this encoding can be found in ECMA-368 Annex-D [Table D.11]
+ *
+ * The resulting bitmap will have the following mapping:
+ * bit position 0 == MAS 1
+ * bit position 1 == MAS 2
+ * ...
+ * bit position (UWB_NUM_MAS - 1) == MAS UWB_NUM_MAS
+ *
+ * @bmp_itr: pointer to bitmap (can be declared with DECLARE_BITMAP)
+ * @buffer: pointer to buffer containing bitmap data in big endian
+ * format (MSB first)
+ * @buffer_size:number of bytes with which bitmap should be initialized
+ */
+static
+void buffer_to_bmp(unsigned long *bmp_itr, void *_buffer,
+ size_t buffer_size)
+{
+ u8 *buffer = _buffer;
+ size_t itr, len;
+ unsigned long val;
+
+ itr = 0;
+ while (itr < buffer_size) {
+ len = buffer_size - itr >= sizeof(val) ?
+ sizeof(val) : buffer_size - itr;
+ val = get_val(buffer, itr, len);
+ bmp_itr[itr / sizeof(val)] = val;
+ itr += sizeof(val);
+ }
+}
+
+
+/**
+ * Extract DRP Availability bitmap from the notification.
+ *
+ * The notification that comes in contains a bitmap of (UWB_NUM_MAS / 8) bytes
+ * We convert that to our internal representation.
+ */
+static
+int uwbd_evt_get_drp_avail(struct uwb_event *evt, unsigned long *bmp)
+{
+ struct device *dev = &evt->rc->uwb_dev.dev;
+ struct uwb_rc_evt_drp_avail *drp_evt;
+ int result = -EINVAL;
+
+ /* Is there enough data to decode the event? */
+ if (evt->notif.size < sizeof(*drp_evt)) {
+ dev_err(dev, "DRP Availability Change: Not enough "
+ "data to decode event [%zu bytes, %zu "
+ "needed]\n", evt->notif.size, sizeof(*drp_evt));
+ goto error;
+ }
+ drp_evt = container_of(evt->notif.rceb, struct uwb_rc_evt_drp_avail, rceb);
+ buffer_to_bmp(bmp, drp_evt->bmp, UWB_NUM_MAS/8);
+ result = 0;
+error:
+ return result;
+}
+
+
+/**
+ * Process an incoming DRP Availability notification.
+ *
+ * @evt: Event information (packs the actual event data, which
+ * radio controller it came to, etc).
+ *
+ * @returns: 0 on success (so uwbd() frees the event buffer), < 0
+ * on error.
+ *
+ * According to ECMA-368 1.0 [16.8.7], bits set to ONE indicate that
+ * the MAS slot is available, bits set to ZERO indicate that the slot
+ * is busy.
+ *
+ * So we clear available slots, we set used slots :)
+ *
+ * The notification only marks non-availability based on the BP and
+ * received DRP IEs that are not for this radio controller. A copy of
+ * this bitmap is needed to generate the real availability (which
+ * includes local and pending reservations).
+ *
+ * The DRP Availability IE that this radio controller emits will need
+ * to be updated.
+ */
+int uwbd_evt_handle_rc_drp_avail(struct uwb_event *evt)
+{
+ int result;
+ struct uwb_rc *rc = evt->rc;
+ DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+
+ result = uwbd_evt_get_drp_avail(evt, bmp);
+ if (result < 0)
+ return result;
+
+ mutex_lock(&rc->rsvs_mutex);
+ bitmap_copy(rc->drp_avail.global, bmp, UWB_NUM_MAS);
+ rc->drp_avail.ie_valid = false;
+ mutex_unlock(&rc->rsvs_mutex);
+
+ uwb_rsv_sched_update(rc);
+
+ return 0;
+}
--- /dev/null
+/*
+ * UWB DRP IE management.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+/*
+ * Allocate a DRP IE.
+ *
+ * To save having to free/allocate a DRP IE when its MAS changes,
+ * enough memory is allocated for the maxiumum number of DRP
+ * allocation fields. This gives an overhead per reservation of up to
+ * (UWB_NUM_ZONES - 1) * 4 = 60 octets.
+ */
+static struct uwb_ie_drp *uwb_drp_ie_alloc(void)
+{
+ struct uwb_ie_drp *drp_ie;
+ unsigned tiebreaker;
+
+ drp_ie = kzalloc(sizeof(struct uwb_ie_drp) +
+ UWB_NUM_ZONES * sizeof(struct uwb_drp_alloc),
+ GFP_KERNEL);
+ if (drp_ie) {
+ drp_ie->hdr.element_id = UWB_IE_DRP;
+
+ get_random_bytes(&tiebreaker, sizeof(unsigned));
+ uwb_ie_drp_set_tiebreaker(drp_ie, tiebreaker & 1);
+ }
+ return drp_ie;
+}
+
+
+/*
+ * Fill a DRP IE's allocation fields from a MAS bitmap.
+ */
+static void uwb_drp_ie_from_bm(struct uwb_ie_drp *drp_ie,
+ struct uwb_mas_bm *mas)
+{
+ int z, i, num_fields = 0, next = 0;
+ struct uwb_drp_alloc *zones;
+ __le16 current_bmp;
+ DECLARE_BITMAP(tmp_bmp, UWB_NUM_MAS);
+ DECLARE_BITMAP(tmp_mas_bm, UWB_MAS_PER_ZONE);
+
+ zones = drp_ie->allocs;
+
+ bitmap_copy(tmp_bmp, mas->bm, UWB_NUM_MAS);
+
+ /* Determine unique MAS bitmaps in zones from bitmap. */
+ for (z = 0; z < UWB_NUM_ZONES; z++) {
+ bitmap_copy(tmp_mas_bm, tmp_bmp, UWB_MAS_PER_ZONE);
+ if (bitmap_weight(tmp_mas_bm, UWB_MAS_PER_ZONE) > 0) {
+ bool found = false;
+ current_bmp = (__le16) *tmp_mas_bm;
+ for (i = 0; i < next; i++) {
+ if (current_bmp == zones[i].mas_bm) {
+ zones[i].zone_bm |= 1 << z;
+ found = true;
+ break;
+ }
+ }
+ if (!found) {
+ num_fields++;
+ zones[next].zone_bm = 1 << z;
+ zones[next].mas_bm = current_bmp;
+ next++;
+ }
+ }
+ bitmap_shift_right(tmp_bmp, tmp_bmp, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+ }
+
+ /* Store in format ready for transmission (le16). */
+ for (i = 0; i < num_fields; i++) {
+ drp_ie->allocs[i].zone_bm = cpu_to_le16(zones[i].zone_bm);
+ drp_ie->allocs[i].mas_bm = cpu_to_le16(zones[i].mas_bm);
+ }
+
+ drp_ie->hdr.length = sizeof(struct uwb_ie_drp) - sizeof(struct uwb_ie_hdr)
+ + num_fields * sizeof(struct uwb_drp_alloc);
+}
+
+/**
+ * uwb_drp_ie_update - update a reservation's DRP IE
+ * @rsv: the reservation
+ */
+int uwb_drp_ie_update(struct uwb_rsv *rsv)
+{
+ struct device *dev = &rsv->rc->uwb_dev.dev;
+ struct uwb_ie_drp *drp_ie;
+ int reason_code, status;
+
+ switch (rsv->state) {
+ case UWB_RSV_STATE_NONE:
+ kfree(rsv->drp_ie);
+ rsv->drp_ie = NULL;
+ return 0;
+ case UWB_RSV_STATE_O_INITIATED:
+ reason_code = UWB_DRP_REASON_ACCEPTED;
+ status = 0;
+ break;
+ case UWB_RSV_STATE_O_PENDING:
+ reason_code = UWB_DRP_REASON_ACCEPTED;
+ status = 0;
+ break;
+ case UWB_RSV_STATE_O_MODIFIED:
+ reason_code = UWB_DRP_REASON_MODIFIED;
+ status = 1;
+ break;
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ reason_code = UWB_DRP_REASON_ACCEPTED;
+ status = 1;
+ break;
+ case UWB_RSV_STATE_T_ACCEPTED:
+ reason_code = UWB_DRP_REASON_ACCEPTED;
+ status = 1;
+ break;
+ case UWB_RSV_STATE_T_DENIED:
+ reason_code = UWB_DRP_REASON_DENIED;
+ status = 0;
+ break;
+ default:
+ dev_dbg(dev, "rsv with unhandled state (%d)\n", rsv->state);
+ return -EINVAL;
+ }
+
+ if (rsv->drp_ie == NULL) {
+ rsv->drp_ie = uwb_drp_ie_alloc();
+ if (rsv->drp_ie == NULL)
+ return -ENOMEM;
+ }
+ drp_ie = rsv->drp_ie;
+
+ uwb_ie_drp_set_owner(drp_ie, uwb_rsv_is_owner(rsv));
+ uwb_ie_drp_set_status(drp_ie, status);
+ uwb_ie_drp_set_reason_code(drp_ie, reason_code);
+ uwb_ie_drp_set_stream_index(drp_ie, rsv->stream);
+ uwb_ie_drp_set_type(drp_ie, rsv->type);
+
+ if (uwb_rsv_is_owner(rsv)) {
+ switch (rsv->target.type) {
+ case UWB_RSV_TARGET_DEV:
+ drp_ie->dev_addr = rsv->target.dev->dev_addr;
+ break;
+ case UWB_RSV_TARGET_DEVADDR:
+ drp_ie->dev_addr = rsv->target.devaddr;
+ break;
+ }
+ } else
+ drp_ie->dev_addr = rsv->owner->dev_addr;
+
+ uwb_drp_ie_from_bm(drp_ie, &rsv->mas);
+
+ rsv->ie_valid = true;
+ return 0;
+}
+
+/*
+ * Set MAS bits from given MAS bitmap in a single zone of large bitmap.
+ *
+ * We are given a zone id and the MAS bitmap of bits that need to be set in
+ * this zone. Note that this zone may already have bits set and this only
+ * adds settings - we cannot simply assign the MAS bitmap contents to the
+ * zone contents. We iterate over the the bits (MAS) in the zone and set the
+ * bits that are set in the given MAS bitmap.
+ */
+static
+void uwb_drp_ie_single_zone_to_bm(struct uwb_mas_bm *bm, u8 zone, u16 mas_bm)
+{
+ int mas;
+ u16 mas_mask;
+
+ for (mas = 0; mas < UWB_MAS_PER_ZONE; mas++) {
+ mas_mask = 1 << mas;
+ if (mas_bm & mas_mask)
+ set_bit(zone * UWB_NUM_ZONES + mas, bm->bm);
+ }
+}
+
+/**
+ * uwb_drp_ie_zones_to_bm - convert DRP allocation fields to a bitmap
+ * @mas: MAS bitmap that will be populated to correspond to the
+ * allocation fields in the DRP IE
+ * @drp_ie: the DRP IE that contains the allocation fields.
+ *
+ * The input format is an array of MAS allocation fields (16 bit Zone
+ * bitmap, 16 bit MAS bitmap) as described in [ECMA-368] section
+ * 16.8.6. The output is a full 256 bit MAS bitmap.
+ *
+ * We go over all the allocation fields, for each allocation field we
+ * know which zones are impacted. We iterate over all the zones
+ * impacted and call a function that will set the correct MAS bits in
+ * each zone.
+ */
+void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie)
+{
+ int numallocs = (drp_ie->hdr.length - 4) / 4;
+ const struct uwb_drp_alloc *alloc;
+ int cnt;
+ u16 zone_bm, mas_bm;
+ u8 zone;
+ u16 zone_mask;
+
+ for (cnt = 0; cnt < numallocs; cnt++) {
+ alloc = &drp_ie->allocs[cnt];
+ zone_bm = le16_to_cpu(alloc->zone_bm);
+ mas_bm = le16_to_cpu(alloc->mas_bm);
+ for (zone = 0; zone < UWB_NUM_ZONES; zone++) {
+ zone_mask = 1 << zone;
+ if (zone_bm & zone_mask)
+ uwb_drp_ie_single_zone_to_bm(bm, zone, mas_bm);
+ }
+ }
+}
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Dynamic Reservation Protocol handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kthread.h>
+#include <linux/freezer.h>
+#include <linux/delay.h>
+#include "uwb-internal.h"
+
+/**
+ * Construct and send the SET DRP IE
+ *
+ * @rc: UWB Host controller
+ * @returns: >= 0 number of bytes still available in the beacon
+ * < 0 errno code on error.
+ *
+ * See WUSB[8.6.2.7]: The host must set all the DRP IEs that it wants the
+ * device to include in its beacon at the same time. We thus have to
+ * traverse all reservations and include the DRP IEs of all PENDING
+ * and NEGOTIATED reservations in a SET DRP command for transmission.
+ *
+ * A DRP Availability IE is appended.
+ *
+ * rc->uwb_dev.mutex is held
+ *
+ * FIXME We currently ignore the returned value indicating the remaining space
+ * in beacon. This could be used to deny reservation requests earlier if
+ * determined that they would cause the beacon space to be exceeded.
+ */
+static
+int uwb_rc_gen_send_drp_ie(struct uwb_rc *rc)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_cmd_set_drp_ie *cmd;
+ struct uwb_rc_evt_set_drp_ie reply;
+ struct uwb_rsv *rsv;
+ int num_bytes = 0;
+ u8 *IEDataptr;
+
+ result = -ENOMEM;
+ /* First traverse all reservations to determine memory needed. */
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (rsv->drp_ie != NULL)
+ num_bytes += rsv->drp_ie->hdr.length + 2;
+ }
+ num_bytes += sizeof(rc->drp_avail.ie);
+ cmd = kzalloc(sizeof(*cmd) + num_bytes, GFP_KERNEL);
+ if (cmd == NULL)
+ goto error;
+ cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+ cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_DRP_IE);
+ cmd->wIELength = num_bytes;
+ IEDataptr = (u8 *)&cmd->IEData[0];
+
+ /* Next traverse all reservations to place IEs in allocated memory. */
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (rsv->drp_ie != NULL) {
+ memcpy(IEDataptr, rsv->drp_ie,
+ rsv->drp_ie->hdr.length + 2);
+ IEDataptr += rsv->drp_ie->hdr.length + 2;
+ }
+ }
+ memcpy(IEDataptr, &rc->drp_avail.ie, sizeof(rc->drp_avail.ie));
+
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_SET_DRP_IE;
+ result = uwb_rc_cmd(rc, "SET-DRP-IE", &cmd->rccb,
+ sizeof(*cmd) + num_bytes, &reply.rceb,
+ sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ result = le16_to_cpu(reply.wRemainingSpace);
+ if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: command execution "
+ "failed: %s (%d). RemainingSpace in beacon "
+ "= %d\n", uwb_rc_strerror(reply.bResultCode),
+ reply.bResultCode, result);
+ result = -EIO;
+ } else {
+ dev_dbg(dev, "SET-DRP-IE sent. RemainingSpace in beacon "
+ "= %d.\n", result);
+ result = 0;
+ }
+error_cmd:
+ kfree(cmd);
+error:
+ return result;
+
+}
+/**
+ * Send all DRP IEs associated with this host
+ *
+ * @returns: >= 0 number of bytes still available in the beacon
+ * < 0 errno code on error.
+ *
+ * As per the protocol we obtain the host controller device lock to access
+ * bandwidth structures.
+ */
+int uwb_rc_send_all_drp_ie(struct uwb_rc *rc)
+{
+ int result;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = uwb_rc_gen_send_drp_ie(rc);
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+void uwb_drp_handle_timeout(struct uwb_rsv *rsv)
+{
+ struct device *dev = &rsv->rc->uwb_dev.dev;
+
+ dev_dbg(dev, "reservation timeout in state %s (%d)\n",
+ uwb_rsv_state_str(rsv->state), rsv->state);
+
+ switch (rsv->state) {
+ case UWB_RSV_STATE_O_INITIATED:
+ if (rsv->is_multicast) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ return;
+ }
+ break;
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ if (rsv->is_multicast)
+ return;
+ break;
+ default:
+ break;
+ }
+ uwb_rsv_remove(rsv);
+}
+
+/*
+ * Based on the DRP IE, transition a target reservation to a new
+ * state.
+ */
+static void uwb_drp_process_target(struct uwb_rc *rc, struct uwb_rsv *rsv,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ int status;
+ enum uwb_drp_reason reason_code;
+
+ status = uwb_ie_drp_status(drp_ie);
+ reason_code = uwb_ie_drp_reason_code(drp_ie);
+
+ if (status) {
+ switch (reason_code) {
+ case UWB_DRP_REASON_ACCEPTED:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_T_ACCEPTED);
+ break;
+ case UWB_DRP_REASON_MODIFIED:
+ dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+ reason_code, status);
+ break;
+ default:
+ dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+ reason_code, status);
+ }
+ } else {
+ switch (reason_code) {
+ case UWB_DRP_REASON_ACCEPTED:
+ /* New reservations are handled in uwb_rsv_find(). */
+ break;
+ case UWB_DRP_REASON_DENIED:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+ break;
+ case UWB_DRP_REASON_CONFLICT:
+ case UWB_DRP_REASON_MODIFIED:
+ dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+ reason_code, status);
+ break;
+ default:
+ dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+ reason_code, status);
+ }
+ }
+}
+
+/*
+ * Based on the DRP IE, transition an owner reservation to a new
+ * state.
+ */
+static void uwb_drp_process_owner(struct uwb_rc *rc, struct uwb_rsv *rsv,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ int status;
+ enum uwb_drp_reason reason_code;
+
+ status = uwb_ie_drp_status(drp_ie);
+ reason_code = uwb_ie_drp_reason_code(drp_ie);
+
+ if (status) {
+ switch (reason_code) {
+ case UWB_DRP_REASON_ACCEPTED:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ break;
+ case UWB_DRP_REASON_MODIFIED:
+ dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+ reason_code, status);
+ break;
+ default:
+ dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+ reason_code, status);
+ }
+ } else {
+ switch (reason_code) {
+ case UWB_DRP_REASON_PENDING:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_PENDING);
+ break;
+ case UWB_DRP_REASON_DENIED:
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+ break;
+ case UWB_DRP_REASON_CONFLICT:
+ case UWB_DRP_REASON_MODIFIED:
+ dev_err(dev, "FIXME: unhandled reason code (%d/%d)\n",
+ reason_code, status);
+ break;
+ default:
+ dev_warn(dev, "ignoring invalid DRP IE state (%d/%d)\n",
+ reason_code, status);
+ }
+ }
+}
+
+/*
+ * Process a received DRP IE, it's either for a reservation owned by
+ * the RC or targeted at it (or it's for a WUSB cluster reservation).
+ */
+static void uwb_drp_process(struct uwb_rc *rc, struct uwb_dev *src,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct uwb_rsv *rsv;
+
+ rsv = uwb_rsv_find(rc, src, drp_ie);
+ if (!rsv) {
+ /*
+ * No reservation? It's either for a recently
+ * terminated reservation; or the DRP IE couldn't be
+ * processed (e.g., an invalid IE or out of memory).
+ */
+ return;
+ }
+
+ /*
+ * Do nothing with DRP IEs for reservations that have been
+ * terminated.
+ */
+ if (rsv->state == UWB_RSV_STATE_NONE) {
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+ return;
+ }
+
+ if (uwb_ie_drp_owner(drp_ie))
+ uwb_drp_process_target(rc, rsv, drp_ie);
+ else
+ uwb_drp_process_owner(rc, rsv, drp_ie);
+}
+
+
+/*
+ * Process all the DRP IEs (both DRP IEs and the DRP Availability IE)
+ * from a device.
+ */
+static
+void uwb_drp_process_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
+ size_t ielen, struct uwb_dev *src_dev)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_ie_hdr *ie_hdr;
+ void *ptr;
+
+ ptr = drp_evt->ie_data;
+ for (;;) {
+ ie_hdr = uwb_ie_next(&ptr, &ielen);
+ if (!ie_hdr)
+ break;
+
+ switch (ie_hdr->element_id) {
+ case UWB_IE_DRP_AVAILABILITY:
+ /* FIXME: does something need to be done with this? */
+ break;
+ case UWB_IE_DRP:
+ uwb_drp_process(rc, src_dev, (struct uwb_ie_drp *)ie_hdr);
+ break;
+ default:
+ dev_warn(dev, "unexpected IE in DRP notification\n");
+ break;
+ }
+ }
+
+ if (ielen > 0)
+ dev_warn(dev, "%d octets remaining in DRP notification\n",
+ (int)ielen);
+}
+
+
+/*
+ * Go through all the DRP IEs and find the ones that conflict with our
+ * reservations.
+ *
+ * FIXME: must resolve the conflict according the the rules in
+ * [ECMA-368].
+ */
+static
+void uwb_drp_process_conflict_all(struct uwb_rc *rc, struct uwb_rc_evt_drp *drp_evt,
+ size_t ielen, struct uwb_dev *src_dev)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_ie_hdr *ie_hdr;
+ struct uwb_ie_drp *drp_ie;
+ void *ptr;
+
+ ptr = drp_evt->ie_data;
+ for (;;) {
+ ie_hdr = uwb_ie_next(&ptr, &ielen);
+ if (!ie_hdr)
+ break;
+
+ drp_ie = container_of(ie_hdr, struct uwb_ie_drp, hdr);
+
+ /* FIXME: check if this DRP IE conflicts. */
+ }
+
+ if (ielen > 0)
+ dev_warn(dev, "%d octets remaining in DRP notification\n",
+ (int)ielen);
+}
+
+
+/*
+ * Terminate all reservations owned by, or targeted at, 'uwb_dev'.
+ */
+static void uwb_drp_terminate_all(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
+{
+ struct uwb_rsv *rsv;
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (rsv->owner == uwb_dev
+ || (rsv->target.type == UWB_RSV_TARGET_DEV && rsv->target.dev == uwb_dev))
+ uwb_rsv_remove(rsv);
+ }
+}
+
+
+/**
+ * uwbd_evt_handle_rc_drp - handle a DRP_IE event
+ * @evt: the DRP_IE event from the radio controller
+ *
+ * This processes DRP notifications from the radio controller, either
+ * initiating a new reservation or transitioning an existing
+ * reservation into a different state.
+ *
+ * DRP notifications can occur for three different reasons:
+ *
+ * - UWB_DRP_NOTIF_DRP_IE_RECVD: one or more DRP IEs with the RC as
+ * the target or source have been recieved.
+ *
+ * These DRP IEs could be new or for an existing reservation.
+ *
+ * If the DRP IE for an existing reservation ceases to be to
+ * recieved for at least mMaxLostBeacons, the reservation should be
+ * considered to be terminated. Note that the TERMINATE reason (see
+ * below) may not always be signalled (e.g., the remote device has
+ * two or more reservations established with the RC).
+ *
+ * - UWB_DRP_NOTIF_CONFLICT: DRP IEs from any device in the beacon
+ * group conflict with the RC's reservations.
+ *
+ * - UWB_DRP_NOTIF_TERMINATE: DRP IEs are no longer being received
+ * from a device (i.e., it's terminated all reservations).
+ *
+ * Only the software state of the reservations is changed; the setting
+ * of the radio controller's DRP IEs is done after all the events in
+ * an event buffer are processed. This saves waiting multiple times
+ * for the SET_DRP_IE command to complete.
+ */
+int uwbd_evt_handle_rc_drp(struct uwb_event *evt)
+{
+ struct device *dev = &evt->rc->uwb_dev.dev;
+ struct uwb_rc *rc = evt->rc;
+ struct uwb_rc_evt_drp *drp_evt;
+ size_t ielength, bytes_left;
+ struct uwb_dev_addr src_addr;
+ struct uwb_dev *src_dev;
+ int reason;
+
+ /* Is there enough data to decode the event (and any IEs in
+ its payload)? */
+ if (evt->notif.size < sizeof(*drp_evt)) {
+ dev_err(dev, "DRP event: Not enough data to decode event "
+ "[%zu bytes left, %zu needed]\n",
+ evt->notif.size, sizeof(*drp_evt));
+ return 0;
+ }
+ bytes_left = evt->notif.size - sizeof(*drp_evt);
+ drp_evt = container_of(evt->notif.rceb, struct uwb_rc_evt_drp, rceb);
+ ielength = le16_to_cpu(drp_evt->ie_length);
+ if (bytes_left != ielength) {
+ dev_err(dev, "DRP event: Not enough data in payload [%zu"
+ "bytes left, %zu declared in the event]\n",
+ bytes_left, ielength);
+ return 0;
+ }
+
+ memcpy(src_addr.data, &drp_evt->src_addr, sizeof(src_addr));
+ src_dev = uwb_dev_get_by_devaddr(rc, &src_addr);
+ if (!src_dev) {
+ /*
+ * A DRP notification from an unrecognized device.
+ *
+ * This is probably from a WUSB device that doesn't
+ * have an EUI-48 and therefore doesn't show up in the
+ * UWB device database. It's safe to simply ignore
+ * these.
+ */
+ return 0;
+ }
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ reason = uwb_rc_evt_drp_reason(drp_evt);
+
+ switch (reason) {
+ case UWB_DRP_NOTIF_DRP_IE_RCVD:
+ uwb_drp_process_all(rc, drp_evt, ielength, src_dev);
+ break;
+ case UWB_DRP_NOTIF_CONFLICT:
+ uwb_drp_process_conflict_all(rc, drp_evt, ielength, src_dev);
+ break;
+ case UWB_DRP_NOTIF_TERMINATE:
+ uwb_drp_terminate_all(rc, src_dev);
+ break;
+ default:
+ dev_warn(dev, "ignored DRP event with reason code: %d\n", reason);
+ break;
+ }
+
+ mutex_unlock(&rc->rsvs_mutex);
+
+ uwb_dev_put(src_dev);
+ return 0;
+}
--- /dev/null
+/*
+ * Ultra Wide Band Radio Control
+ * Event Size Tables management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Infrastructure, code and data tables for guessing the size of
+ * events received on the notification endpoints of UWB radio
+ * controllers.
+ *
+ * You define a table of events and for each, its size and how to get
+ * the extra size.
+ *
+ * ENTRY POINTS:
+ *
+ * uwb_est_{init/destroy}(): To initialize/release the EST subsystem.
+ *
+ * uwb_est_[u]register(): To un/register event size tables
+ * uwb_est_grow()
+ *
+ * uwb_est_find_size(): Get the size of an event
+ * uwb_est_get_size()
+ */
+#include <linux/spinlock.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+
+struct uwb_est {
+ u16 type_event_high;
+ u16 vendor, product;
+ u8 entries;
+ const struct uwb_est_entry *entry;
+};
+
+
+static struct uwb_est *uwb_est;
+static u8 uwb_est_size;
+static u8 uwb_est_used;
+static DEFINE_RWLOCK(uwb_est_lock);
+
+/**
+ * WUSB Standard Event Size Table, HWA-RC interface
+ *
+ * Sizes for events and notifications type 0 (general), high nibble 0.
+ */
+static
+struct uwb_est_entry uwb_est_00_00xx[] = {
+ [UWB_RC_EVT_IE_RCV] = {
+ .size = sizeof(struct uwb_rc_evt_ie_rcv),
+ .offset = 1 + offsetof(struct uwb_rc_evt_ie_rcv, wIELength),
+ },
+ [UWB_RC_EVT_BEACON] = {
+ .size = sizeof(struct uwb_rc_evt_beacon),
+ .offset = 1 + offsetof(struct uwb_rc_evt_beacon, wBeaconInfoLength),
+ },
+ [UWB_RC_EVT_BEACON_SIZE] = {
+ .size = sizeof(struct uwb_rc_evt_beacon_size),
+ },
+ [UWB_RC_EVT_BPOIE_CHANGE] = {
+ .size = sizeof(struct uwb_rc_evt_bpoie_change),
+ .offset = 1 + offsetof(struct uwb_rc_evt_bpoie_change,
+ wBPOIELength),
+ },
+ [UWB_RC_EVT_BP_SLOT_CHANGE] = {
+ .size = sizeof(struct uwb_rc_evt_bp_slot_change),
+ },
+ [UWB_RC_EVT_BP_SWITCH_IE_RCV] = {
+ .size = sizeof(struct uwb_rc_evt_bp_switch_ie_rcv),
+ .offset = 1 + offsetof(struct uwb_rc_evt_bp_switch_ie_rcv, wIELength),
+ },
+ [UWB_RC_EVT_DEV_ADDR_CONFLICT] = {
+ .size = sizeof(struct uwb_rc_evt_dev_addr_conflict),
+ },
+ [UWB_RC_EVT_DRP_AVAIL] = {
+ .size = sizeof(struct uwb_rc_evt_drp_avail)
+ },
+ [UWB_RC_EVT_DRP] = {
+ .size = sizeof(struct uwb_rc_evt_drp),
+ .offset = 1 + offsetof(struct uwb_rc_evt_drp, ie_length),
+ },
+ [UWB_RC_EVT_BP_SWITCH_STATUS] = {
+ .size = sizeof(struct uwb_rc_evt_bp_switch_status),
+ },
+ [UWB_RC_EVT_CMD_FRAME_RCV] = {
+ .size = sizeof(struct uwb_rc_evt_cmd_frame_rcv),
+ .offset = 1 + offsetof(struct uwb_rc_evt_cmd_frame_rcv, dataLength),
+ },
+ [UWB_RC_EVT_CHANNEL_CHANGE_IE_RCV] = {
+ .size = sizeof(struct uwb_rc_evt_channel_change_ie_rcv),
+ .offset = 1 + offsetof(struct uwb_rc_evt_channel_change_ie_rcv, wIELength),
+ },
+ [UWB_RC_CMD_CHANNEL_CHANGE] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_DEV_ADDR_MGMT] = {
+ .size = sizeof(struct uwb_rc_evt_dev_addr_mgmt) },
+ [UWB_RC_CMD_GET_IE] = {
+ .size = sizeof(struct uwb_rc_evt_get_ie),
+ .offset = 1 + offsetof(struct uwb_rc_evt_get_ie, wIELength),
+ },
+ [UWB_RC_CMD_RESET] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SCAN] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SET_BEACON_FILTER] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SET_DRP_IE] = {
+ .size = sizeof(struct uwb_rc_evt_set_drp_ie),
+ },
+ [UWB_RC_CMD_SET_IE] = {
+ .size = sizeof(struct uwb_rc_evt_set_ie),
+ },
+ [UWB_RC_CMD_SET_NOTIFICATION_FILTER] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SET_TX_POWER] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SLEEP] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_START_BEACON] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_STOP_BEACON] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_BP_MERGE] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SEND_COMMAND_FRAME] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+ [UWB_RC_CMD_SET_ASIE_NOTIF] = {
+ .size = sizeof(struct uwb_rc_evt_confirm),
+ },
+};
+
+static
+struct uwb_est_entry uwb_est_01_00xx[] = {
+ [UWB_RC_DAA_ENERGY_DETECTED] = {
+ .size = sizeof(struct uwb_rc_evt_daa_energy_detected),
+ },
+ [UWB_RC_SET_DAA_ENERGY_MASK] = {
+ .size = sizeof(struct uwb_rc_evt_set_daa_energy_mask),
+ },
+ [UWB_RC_SET_NOTIFICATION_FILTER_EX] = {
+ .size = sizeof(struct uwb_rc_evt_set_notification_filter_ex),
+ },
+};
+
+/**
+ * Initialize the EST subsystem
+ *
+ * Register the standard tables also.
+ *
+ * FIXME: tag init
+ */
+int uwb_est_create(void)
+{
+ int result;
+
+ uwb_est_size = 2;
+ uwb_est_used = 0;
+ uwb_est = kzalloc(uwb_est_size * sizeof(uwb_est[0]), GFP_KERNEL);
+ if (uwb_est == NULL)
+ return -ENOMEM;
+
+ result = uwb_est_register(UWB_RC_CET_GENERAL, 0, 0xffff, 0xffff,
+ uwb_est_00_00xx, ARRAY_SIZE(uwb_est_00_00xx));
+ if (result < 0)
+ goto out;
+ result = uwb_est_register(UWB_RC_CET_EX_TYPE_1, 0, 0xffff, 0xffff,
+ uwb_est_01_00xx, ARRAY_SIZE(uwb_est_01_00xx));
+out:
+ return result;
+}
+
+
+/** Clean it up */
+void uwb_est_destroy(void)
+{
+ kfree(uwb_est);
+ uwb_est = NULL;
+ uwb_est_size = uwb_est_used = 0;
+}
+
+
+/**
+ * Double the capacity of the EST table
+ *
+ * @returns 0 if ok, < 0 errno no error.
+ */
+static
+int uwb_est_grow(void)
+{
+ size_t actual_size = uwb_est_size * sizeof(uwb_est[0]);
+ void *new = kmalloc(2 * actual_size, GFP_ATOMIC);
+ if (new == NULL)
+ return -ENOMEM;
+ memcpy(new, uwb_est, actual_size);
+ memset(new + actual_size, 0, actual_size);
+ kfree(uwb_est);
+ uwb_est = new;
+ uwb_est_size *= 2;
+ return 0;
+}
+
+
+/**
+ * Register an event size table
+ *
+ * Makes room for it if the table is full, and then inserts it in the
+ * right position (entries are sorted by type, event_high, vendor and
+ * then product).
+ *
+ * @vendor: vendor code for matching against the device (0x0000 and
+ * 0xffff mean any); use 0x0000 to force all to match without
+ * checking possible vendor specific ones, 0xfffff to match
+ * after checking vendor specific ones.
+ *
+ * @product: product code from that vendor; same matching rules, use
+ * 0x0000 for not allowing vendor specific matches, 0xffff
+ * for allowing.
+ *
+ * This arragement just makes the tables sort differenty. Because the
+ * table is sorted by growing type-event_high-vendor-product, a zero
+ * vendor will match before than a 0x456a vendor, that will match
+ * before a 0xfffff vendor.
+ *
+ * @returns 0 if ok, < 0 errno on error (-ENOENT if not found).
+ */
+/* FIXME: add bus type to vendor/product code */
+int uwb_est_register(u8 type, u8 event_high, u16 vendor, u16 product,
+ const struct uwb_est_entry *entry, size_t entries)
+{
+ unsigned long flags;
+ unsigned itr;
+ u16 type_event_high;
+ int result = 0;
+
+ write_lock_irqsave(&uwb_est_lock, flags);
+ if (uwb_est_used == uwb_est_size) {
+ result = uwb_est_grow();
+ if (result < 0)
+ goto out;
+ }
+ /* Find the right spot to insert it in */
+ type_event_high = type << 8 | event_high;
+ for (itr = 0; itr < uwb_est_used; itr++)
+ if (uwb_est[itr].type_event_high < type
+ && uwb_est[itr].vendor < vendor
+ && uwb_est[itr].product < product)
+ break;
+
+ /* Shift others to make room for the new one? */
+ if (itr < uwb_est_used)
+ memmove(&uwb_est[itr+1], &uwb_est[itr], uwb_est_used - itr);
+ uwb_est[itr].type_event_high = type << 8 | event_high;
+ uwb_est[itr].vendor = vendor;
+ uwb_est[itr].product = product;
+ uwb_est[itr].entry = entry;
+ uwb_est[itr].entries = entries;
+ uwb_est_used++;
+out:
+ write_unlock_irqrestore(&uwb_est_lock, flags);
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_est_register);
+
+
+/**
+ * Unregister an event size table
+ *
+ * This just removes the specified entry and moves the ones after it
+ * to fill in the gap. This is needed to keep the list sorted; no
+ * reallocation is done to reduce the size of the table.
+ *
+ * We unregister by all the data we used to register instead of by
+ * pointer to the @entry array because we might have used the same
+ * table for a bunch of IDs (for example).
+ *
+ * @returns 0 if ok, < 0 errno on error (-ENOENT if not found).
+ */
+int uwb_est_unregister(u8 type, u8 event_high, u16 vendor, u16 product,
+ const struct uwb_est_entry *entry, size_t entries)
+{
+ unsigned long flags;
+ unsigned itr;
+ struct uwb_est est_cmp = {
+ .type_event_high = type << 8 | event_high,
+ .vendor = vendor,
+ .product = product,
+ .entry = entry,
+ .entries = entries
+ };
+ write_lock_irqsave(&uwb_est_lock, flags);
+ for (itr = 0; itr < uwb_est_used; itr++)
+ if (!memcmp(&uwb_est[itr], &est_cmp, sizeof(est_cmp)))
+ goto found;
+ write_unlock_irqrestore(&uwb_est_lock, flags);
+ return -ENOENT;
+
+found:
+ if (itr < uwb_est_used - 1) /* Not last one? move ones above */
+ memmove(&uwb_est[itr], &uwb_est[itr+1], uwb_est_used - itr - 1);
+ uwb_est_used--;
+ write_unlock_irqrestore(&uwb_est_lock, flags);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_est_unregister);
+
+
+/**
+ * Get the size of an event from a table
+ *
+ * @rceb: pointer to the buffer with the event
+ * @rceb_size: size of the area pointed to by @rceb in bytes.
+ * @returns: > 0 Size of the event
+ * -ENOSPC An area big enough was not provided to look
+ * ahead into the event's guts and guess the size.
+ * -EINVAL Unknown event code (wEvent).
+ *
+ * This will look at the received RCEB and guess what is the total
+ * size. For variable sized events, it will look further ahead into
+ * their length field to see how much data should be read.
+ *
+ * Note this size is *not* final--the neh (Notification/Event Handle)
+ * might specificy an extra size to add.
+ */
+static
+ssize_t uwb_est_get_size(struct uwb_rc *uwb_rc, struct uwb_est *est,
+ u8 event_low, const struct uwb_rceb *rceb,
+ size_t rceb_size)
+{
+ unsigned offset;
+ ssize_t size;
+ struct device *dev = &uwb_rc->uwb_dev.dev;
+ const struct uwb_est_entry *entry;
+
+ size = -ENOENT;
+ if (event_low >= est->entries) { /* in range? */
+ dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: event %u out of range\n",
+ est, est->type_event_high, est->vendor, est->product,
+ est->entries, event_low);
+ goto out;
+ }
+ size = -ENOENT;
+ entry = &est->entry[event_low];
+ if (entry->size == 0 && entry->offset == 0) { /* unknown? */
+ dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: event %u unknown\n",
+ est, est->type_event_high, est->vendor, est->product,
+ est->entries, event_low);
+ goto out;
+ }
+ offset = entry->offset; /* extra fries with that? */
+ if (offset == 0)
+ size = entry->size;
+ else {
+ /* Ops, got an extra size field at 'offset'--read it */
+ const void *ptr = rceb;
+ size_t type_size = 0;
+ offset--;
+ size = -ENOSPC; /* enough data for more? */
+ switch (entry->type) {
+ case UWB_EST_16: type_size = sizeof(__le16); break;
+ case UWB_EST_8: type_size = sizeof(u8); break;
+ default: BUG();
+ }
+ if (offset + type_size > rceb_size) {
+ dev_err(dev, "EST %p 0x%04x/%04x/%04x[%u]: "
+ "not enough data to read extra size\n",
+ est, est->type_event_high, est->vendor,
+ est->product, est->entries);
+ goto out;
+ }
+ size = entry->size;
+ ptr += offset;
+ switch (entry->type) {
+ case UWB_EST_16: size += le16_to_cpu(*(__le16 *)ptr); break;
+ case UWB_EST_8: size += *(u8 *)ptr; break;
+ default: BUG();
+ }
+ }
+out:
+ return size;
+}
+
+
+/**
+ * Guesses the size of a WA event
+ *
+ * @rceb: pointer to the buffer with the event
+ * @rceb_size: size of the area pointed to by @rceb in bytes.
+ * @returns: > 0 Size of the event
+ * -ENOSPC An area big enough was not provided to look
+ * ahead into the event's guts and guess the size.
+ * -EINVAL Unknown event code (wEvent).
+ *
+ * This will look at the received RCEB and guess what is the total
+ * size by checking all the tables registered with
+ * uwb_est_register(). For variable sized events, it will look further
+ * ahead into their length field to see how much data should be read.
+ *
+ * Note this size is *not* final--the neh (Notification/Event Handle)
+ * might specificy an extra size to add or replace.
+ */
+ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+ size_t rceb_size)
+{
+ /* FIXME: add vendor/product data */
+ ssize_t size;
+ struct device *dev = &rc->uwb_dev.dev;
+ unsigned long flags;
+ unsigned itr;
+ u16 type_event_high, event;
+ u8 *ptr = (u8 *) rceb;
+
+ read_lock_irqsave(&uwb_est_lock, flags);
+ d_printf(2, dev, "Size query for event 0x%02x/%04x/%02x,"
+ " buffer size %ld\n",
+ (unsigned) rceb->bEventType,
+ (unsigned) le16_to_cpu(rceb->wEvent),
+ (unsigned) rceb->bEventContext,
+ (long) rceb_size);
+ size = -ENOSPC;
+ if (rceb_size < sizeof(*rceb))
+ goto out;
+ event = le16_to_cpu(rceb->wEvent);
+ type_event_high = rceb->bEventType << 8 | (event & 0xff00) >> 8;
+ for (itr = 0; itr < uwb_est_used; itr++) {
+ d_printf(3, dev, "Checking EST 0x%04x/%04x/%04x\n",
+ uwb_est[itr].type_event_high, uwb_est[itr].vendor,
+ uwb_est[itr].product);
+ if (uwb_est[itr].type_event_high != type_event_high)
+ continue;
+ size = uwb_est_get_size(rc, &uwb_est[itr],
+ event & 0x00ff, rceb, rceb_size);
+ /* try more tables that might handle the same type */
+ if (size != -ENOENT)
+ goto out;
+ }
+ dev_dbg(dev, "event 0x%02x/%04x/%02x: no handlers available; "
+ "RCEB %02x %02x %02x %02x\n",
+ (unsigned) rceb->bEventType,
+ (unsigned) le16_to_cpu(rceb->wEvent),
+ (unsigned) rceb->bEventContext,
+ ptr[0], ptr[1], ptr[2], ptr[3]);
+ size = -ENOENT;
+out:
+ read_unlock_irqrestore(&uwb_est_lock, flags);
+ return size;
+}
+EXPORT_SYMBOL_GPL(uwb_est_find_size);
--- /dev/null
+/*
+ * WUSB Host Wire Adapter: Radio Control Interface (WUSB[8.6])
+ * Radio Control command/event transport
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Initialize the Radio Control interface Driver.
+ *
+ * For each device probed, creates an 'struct hwarc' which contains
+ * just the representation of the UWB Radio Controller, and the logic
+ * for reading notifications and passing them to the UWB Core.
+ *
+ * So we initialize all of those, register the UWB Radio Controller
+ * and setup the notification/event handle to pipe the notifications
+ * to the UWB management Daemon.
+ *
+ * Command and event filtering.
+ *
+ * This is the driver for the Radio Control Interface described in WUSB
+ * 1.0. The core UWB module assumes that all drivers are compliant to the
+ * WHCI 0.95 specification. We thus create a filter that parses all
+ * incoming messages from the (WUSB 1.0) device and manipulate them to
+ * conform to the WHCI 0.95 specification. Similarly, outgoing messages
+ * are parsed and manipulated to conform to the WUSB 1.0 compliant messages
+ * that the device expects. Only a few messages are affected:
+ * Affected events:
+ * UWB_RC_EVT_BEACON
+ * UWB_RC_EVT_BP_SLOT_CHANGE
+ * UWB_RC_EVT_DRP_AVAIL
+ * UWB_RC_EVT_DRP
+ * Affected commands:
+ * UWB_RC_CMD_SCAN
+ * UWB_RC_CMD_SET_DRP_IE
+ *
+ *
+ *
+ */
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+#include <linux/uwb.h>
+#include "uwb-internal.h"
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+/* The device uses commands and events from the WHCI specification, although
+ * reporting itself as WUSB compliant. */
+#define WUSB_QUIRK_WHCI_CMD_EVT 0x01
+
+/**
+ * Descriptor for an instance of the UWB Radio Control Driver that
+ * attaches to the RCI interface of the Host Wired Adapter.
+ *
+ * Unless there is a lock specific to the 'data members', all access
+ * is protected by uwb_rc->mutex.
+ *
+ * The NEEP (Notification/Event EndPoint) URB (@neep_urb) writes to
+ * @rd_buffer. Note there is no locking because it is perfectly (heh!)
+ * serialized--probe() submits an URB, callback is called, processes
+ * the data (synchronously), submits another URB, and so on. There is
+ * no concurrent access to the buffer.
+ */
+struct hwarc {
+ struct usb_device *usb_dev;
+ struct usb_interface *usb_iface;
+ struct uwb_rc *uwb_rc; /* UWB host controller */
+ struct urb *neep_urb; /* Notification endpoint handling */
+ struct edc neep_edc;
+ void *rd_buffer; /* NEEP read buffer */
+};
+
+
+/* Beacon received notification (WUSB 1.0 [8.6.3.2]) */
+struct uwb_rc_evt_beacon_WUSB_0100 {
+ struct uwb_rceb rceb;
+ u8 bChannelNumber;
+ __le16 wBPSTOffset;
+ u8 bLQI;
+ u8 bRSSI;
+ __le16 wBeaconInfoLength;
+ u8 BeaconInfo[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 BEACON RCV notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ *
+ * The WHCI 0.95 spec has a "Beacon Type" field. This value is unknown at
+ * the time we receive the beacon from WUSB so we just set it to
+ * UWB_RC_BEACON_TYPE_NEIGHBOR as a default.
+ * The solution below allocates memory upon receipt of every beacon from a
+ * WUSB device. This will deteriorate performance. What is the right way to
+ * do this?
+ */
+static
+int hwarc_filter_evt_beacon_WUSB_0100(struct uwb_rc *rc,
+ struct uwb_rceb **header,
+ const size_t buf_size,
+ size_t *new_size)
+{
+ struct uwb_rc_evt_beacon_WUSB_0100 *be;
+ struct uwb_rc_evt_beacon *newbe;
+ size_t bytes_left, ielength;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ be = container_of(*header, struct uwb_rc_evt_beacon_WUSB_0100, rceb);
+ bytes_left = buf_size;
+ if (bytes_left < sizeof(*be)) {
+ dev_err(dev, "Beacon Received Notification: Not enough data "
+ "to decode for filtering (%zu vs %zu bytes needed)\n",
+ bytes_left, sizeof(*be));
+ return -EINVAL;
+ }
+ bytes_left -= sizeof(*be);
+ ielength = le16_to_cpu(be->wBeaconInfoLength);
+ if (bytes_left < ielength) {
+ dev_err(dev, "Beacon Received Notification: Not enough data "
+ "to decode IEs (%zu vs %zu bytes needed)\n",
+ bytes_left, ielength);
+ return -EINVAL;
+ }
+ newbe = kzalloc(sizeof(*newbe) + ielength, GFP_ATOMIC);
+ if (newbe == NULL)
+ return -ENOMEM;
+ newbe->rceb = be->rceb;
+ newbe->bChannelNumber = be->bChannelNumber;
+ newbe->bBeaconType = UWB_RC_BEACON_TYPE_NEIGHBOR;
+ newbe->wBPSTOffset = be->wBPSTOffset;
+ newbe->bLQI = be->bLQI;
+ newbe->bRSSI = be->bRSSI;
+ newbe->wBeaconInfoLength = be->wBeaconInfoLength;
+ memcpy(newbe->BeaconInfo, be->BeaconInfo, ielength);
+ *header = &newbe->rceb;
+ *new_size = sizeof(*newbe) + ielength;
+ return 1; /* calling function will free memory */
+}
+
+
+/* DRP Availability change notification (WUSB 1.0 [8.6.3.8]) */
+struct uwb_rc_evt_drp_avail_WUSB_0100 {
+ struct uwb_rceb rceb;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 DRP AVAILABILITY CHANGE notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ */
+static
+int hwarc_filter_evt_drp_avail_WUSB_0100(struct uwb_rc *rc,
+ struct uwb_rceb **header,
+ const size_t buf_size,
+ size_t *new_size)
+{
+ struct uwb_rc_evt_drp_avail_WUSB_0100 *da;
+ struct uwb_rc_evt_drp_avail *newda;
+ struct uwb_ie_hdr *ie_hdr;
+ size_t bytes_left, ielength;
+ struct device *dev = &rc->uwb_dev.dev;
+
+
+ da = container_of(*header, struct uwb_rc_evt_drp_avail_WUSB_0100, rceb);
+ bytes_left = buf_size;
+ if (bytes_left < sizeof(*da)) {
+ dev_err(dev, "Not enough data to decode DRP Avail "
+ "Notification for filtering. Expected %zu, "
+ "received %zu.\n", (size_t)sizeof(*da), bytes_left);
+ return -EINVAL;
+ }
+ bytes_left -= sizeof(*da);
+ ielength = le16_to_cpu(da->wIELength);
+ if (bytes_left < ielength) {
+ dev_err(dev, "DRP Avail Notification filter: IE length "
+ "[%zu bytes] does not match actual length "
+ "[%zu bytes].\n", ielength, bytes_left);
+ return -EINVAL;
+ }
+ if (ielength < sizeof(*ie_hdr)) {
+ dev_err(dev, "DRP Avail Notification filter: Not enough "
+ "data to decode IE [%zu bytes, %zu needed]\n",
+ ielength, sizeof(*ie_hdr));
+ return -EINVAL;
+ }
+ ie_hdr = (void *) da->IEData;
+ if (ie_hdr->length > 32) {
+ dev_err(dev, "DRP Availability Change event has unexpected "
+ "length for filtering. Expected < 32 bytes, "
+ "got %zu bytes.\n", (size_t)ie_hdr->length);
+ return -EINVAL;
+ }
+ newda = kzalloc(sizeof(*newda), GFP_ATOMIC);
+ if (newda == NULL)
+ return -ENOMEM;
+ newda->rceb = da->rceb;
+ memcpy(newda->bmp, (u8 *) ie_hdr + sizeof(*ie_hdr), ie_hdr->length);
+ *header = &newda->rceb;
+ *new_size = sizeof(*newda);
+ return 1; /* calling function will free memory */
+}
+
+
+/* DRP notification (WUSB 1.0 [8.6.3.9]) */
+struct uwb_rc_evt_drp_WUSB_0100 {
+ struct uwb_rceb rceb;
+ struct uwb_dev_addr wSrcAddr;
+ u8 bExplicit;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WUSB 1.0 DRP Notification to be WHCI 0.95
+ *
+ * @header: the incoming event
+ * @buf_size: size of buffer containing incoming event
+ * @new_size: size of event after filtering completed
+ *
+ * It is hard to manage DRP reservations without having a Reason code.
+ * Unfortunately there is none in the WUSB spec. We just set the default to
+ * DRP IE RECEIVED.
+ * We do not currently use the bBeaconSlotNumber value, so we set this to
+ * zero for now.
+ */
+static
+int hwarc_filter_evt_drp_WUSB_0100(struct uwb_rc *rc,
+ struct uwb_rceb **header,
+ const size_t buf_size,
+ size_t *new_size)
+{
+ struct uwb_rc_evt_drp_WUSB_0100 *drpev;
+ struct uwb_rc_evt_drp *newdrpev;
+ size_t bytes_left, ielength;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ drpev = container_of(*header, struct uwb_rc_evt_drp_WUSB_0100, rceb);
+ bytes_left = buf_size;
+ if (bytes_left < sizeof(*drpev)) {
+ dev_err(dev, "Not enough data to decode DRP Notification "
+ "for filtering. Expected %zu, received %zu.\n",
+ (size_t)sizeof(*drpev), bytes_left);
+ return -EINVAL;
+ }
+ ielength = le16_to_cpu(drpev->wIELength);
+ bytes_left -= sizeof(*drpev);
+ if (bytes_left < ielength) {
+ dev_err(dev, "DRP Notification filter: header length [%zu "
+ "bytes] does not match actual length [%zu "
+ "bytes].\n", ielength, bytes_left);
+ return -EINVAL;
+ }
+ newdrpev = kzalloc(sizeof(*newdrpev) + ielength, GFP_ATOMIC);
+ if (newdrpev == NULL)
+ return -ENOMEM;
+ newdrpev->rceb = drpev->rceb;
+ newdrpev->src_addr = drpev->wSrcAddr;
+ newdrpev->reason = UWB_DRP_NOTIF_DRP_IE_RCVD;
+ newdrpev->beacon_slot_number = 0;
+ newdrpev->ie_length = drpev->wIELength;
+ memcpy(newdrpev->ie_data, drpev->IEData, ielength);
+ *header = &newdrpev->rceb;
+ *new_size = sizeof(*newdrpev) + ielength;
+ return 1; /* calling function will free memory */
+}
+
+
+/* Scan Command (WUSB 1.0 [8.6.2.5]) */
+struct uwb_rc_cmd_scan_WUSB_0100 {
+ struct uwb_rccb rccb;
+ u8 bChannelNumber;
+ u8 bScanState;
+} __attribute__((packed));
+
+/**
+ * Filter WHCI 0.95 SCAN command to be WUSB 1.0 SCAN command
+ *
+ * @header: command sent to device (compliant to WHCI 0.95)
+ * @size: size of command sent to device
+ *
+ * We only reduce the size by two bytes because the WUSB 1.0 scan command
+ * does not have the last field (wStarttime). Also, make sure we don't send
+ * the device an unexpected scan type.
+ */
+static
+int hwarc_filter_cmd_scan_WUSB_0100(struct uwb_rc *rc,
+ struct uwb_rccb **header,
+ size_t *size)
+{
+ struct uwb_rc_cmd_scan *sc;
+
+ sc = container_of(*header, struct uwb_rc_cmd_scan, rccb);
+
+ if (sc->bScanState == UWB_SCAN_ONLY_STARTTIME)
+ sc->bScanState = UWB_SCAN_ONLY;
+ /* Don't send the last two bytes. */
+ *size -= 2;
+ return 0;
+}
+
+
+/* SET DRP IE command (WUSB 1.0 [8.6.2.7]) */
+struct uwb_rc_cmd_set_drp_ie_WUSB_0100 {
+ struct uwb_rccb rccb;
+ u8 bExplicit;
+ __le16 wIELength;
+ struct uwb_ie_drp IEData[];
+} __attribute__((packed));
+
+/**
+ * Filter WHCI 0.95 SET DRP IE command to be WUSB 1.0 SET DRP IE command
+ *
+ * @header: command sent to device (compliant to WHCI 0.95)
+ * @size: size of command sent to device
+ *
+ * WUSB has an extra bExplicit field - we assume always explicit
+ * negotiation so this field is set. The command expected by the device is
+ * thus larger than the one prepared by the driver so we need to
+ * reallocate memory to accommodate this.
+ * We trust the driver to send us the correct data so no checking is done
+ * on incoming data - evn though it is variable length.
+ */
+static
+int hwarc_filter_cmd_set_drp_ie_WUSB_0100(struct uwb_rc *rc,
+ struct uwb_rccb **header,
+ size_t *size)
+{
+ struct uwb_rc_cmd_set_drp_ie *orgcmd;
+ struct uwb_rc_cmd_set_drp_ie_WUSB_0100 *cmd;
+ size_t ielength;
+
+ orgcmd = container_of(*header, struct uwb_rc_cmd_set_drp_ie, rccb);
+ ielength = le16_to_cpu(orgcmd->wIELength);
+ cmd = kzalloc(sizeof(*cmd) + ielength, GFP_KERNEL);
+ if (cmd == NULL)
+ return -ENOMEM;
+ cmd->rccb = orgcmd->rccb;
+ cmd->bExplicit = 0;
+ cmd->wIELength = orgcmd->wIELength;
+ memcpy(cmd->IEData, orgcmd->IEData, ielength);
+ *header = &cmd->rccb;
+ *size = sizeof(*cmd) + ielength;
+ return 1; /* calling function will free memory */
+}
+
+
+/**
+ * Filter data from WHCI driver to WUSB device
+ *
+ * @header: WHCI 0.95 compliant command from driver
+ * @size: length of command
+ *
+ * The routine managing commands to the device (uwb_rc_cmd()) will call the
+ * filtering function pointer (if it exists) before it passes any data to
+ * the device. At this time the command has been formatted according to
+ * WHCI 0.95 and is ready to be sent to the device.
+ *
+ * The filter function will be provided with the current command and its
+ * length. The function will manipulate the command if necessary and
+ * potentially reallocate memory for a command that needed more memory that
+ * the given command. If new memory was created the function will return 1
+ * to indicate to the calling function that the memory need to be freed
+ * when not needed any more. The size will contain the new length of the
+ * command.
+ * If memory has not been allocated we rely on the original mechanisms to
+ * free the memory of the command - even when we reduce the value of size.
+ */
+static
+int hwarc_filter_cmd_WUSB_0100(struct uwb_rc *rc, struct uwb_rccb **header,
+ size_t *size)
+{
+ int result;
+ struct uwb_rccb *rccb = *header;
+ int cmd = le16_to_cpu(rccb->wCommand);
+ switch (cmd) {
+ case UWB_RC_CMD_SCAN:
+ result = hwarc_filter_cmd_scan_WUSB_0100(rc, header, size);
+ break;
+ case UWB_RC_CMD_SET_DRP_IE:
+ result = hwarc_filter_cmd_set_drp_ie_WUSB_0100(rc, header, size);
+ break;
+ default:
+ result = -ENOANO;
+ break;
+ }
+ return result;
+}
+
+
+/**
+ * Filter data from WHCI driver to WUSB device
+ *
+ * @header: WHCI 0.95 compliant command from driver
+ * @size: length of command
+ *
+ * Filter commands based on which protocol the device supports. The WUSB
+ * errata should be the same as WHCI 0.95 so we do not filter that here -
+ * only WUSB 1.0.
+ */
+static
+int hwarc_filter_cmd(struct uwb_rc *rc, struct uwb_rccb **header,
+ size_t *size)
+{
+ int result = -ENOANO;
+ if (rc->version == 0x0100)
+ result = hwarc_filter_cmd_WUSB_0100(rc, header, size);
+ return result;
+}
+
+
+/**
+ * Compute return value as sum of incoming value and value at given offset
+ *
+ * @rceb: event for which we compute the size, it contains a variable
+ * length field.
+ * @core_size: size of the "non variable" part of the event
+ * @offset: place in event where the length of the variable part is stored
+ * @buf_size: total length of buffer in which event arrived - we need to make
+ * sure we read the offset in memory that is still part of the event
+ */
+static
+ssize_t hwarc_get_event_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+ size_t core_size, size_t offset,
+ const size_t buf_size)
+{
+ ssize_t size = -ENOSPC;
+ const void *ptr = rceb;
+ size_t type_size = sizeof(__le16);
+ struct device *dev = &rc->uwb_dev.dev;
+
+ if (offset + type_size >= buf_size) {
+ dev_err(dev, "Not enough data to read extra size of event "
+ "0x%02x/%04x/%02x, only got %zu bytes.\n",
+ rceb->bEventType, le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext, buf_size);
+ goto out;
+ }
+ ptr += offset;
+ size = core_size + le16_to_cpu(*(__le16 *)ptr);
+out:
+ return size;
+}
+
+
+/* Beacon slot change notification (WUSB 1.0 [8.6.3.5]) */
+struct uwb_rc_evt_bp_slot_change_WUSB_0100 {
+ struct uwb_rceb rceb;
+ u8 bSlotNumber;
+} __attribute__((packed));
+
+
+/**
+ * Filter data from WUSB device to WHCI driver
+ *
+ * @header: incoming event
+ * @buf_size: size of buffer in which event arrived
+ * @_event_size: actual size of event in the buffer
+ * @new_size: size of event after filtered
+ *
+ * We don't know how the buffer is constructed - there may be more than one
+ * event in it so buffer length does not determine event length. We first
+ * determine the expected size of the incoming event. This value is passed
+ * back only if the actual filtering succeeded (so we know the computed
+ * expected size is correct). This value will be zero if
+ * the event did not need any filtering.
+ *
+ * WHCI interprets the BP Slot Change event's data differently than
+ * WUSB. The event sizes are exactly the same. The data field
+ * indicates the new beacon slot in which a RC is transmitting its
+ * beacon. The maximum value of this is 96 (wMacBPLength ECMA-368
+ * 17.16 (Table 117)). We thus know that the WUSB value will not set
+ * the bit bNoSlot, so we don't really do anything (placeholder).
+ */
+static
+int hwarc_filter_event_WUSB_0100(struct uwb_rc *rc, struct uwb_rceb **header,
+ const size_t buf_size, size_t *_real_size,
+ size_t *_new_size)
+{
+ int result = -ENOANO;
+ struct uwb_rceb *rceb = *header;
+ int event = le16_to_cpu(rceb->wEvent);
+ size_t event_size;
+ size_t core_size, offset;
+
+ if (rceb->bEventType != UWB_RC_CET_GENERAL)
+ goto out;
+ switch (event) {
+ case UWB_RC_EVT_BEACON:
+ core_size = sizeof(struct uwb_rc_evt_beacon_WUSB_0100);
+ offset = offsetof(struct uwb_rc_evt_beacon_WUSB_0100,
+ wBeaconInfoLength);
+ event_size = hwarc_get_event_size(rc, rceb, core_size,
+ offset, buf_size);
+ if (event_size < 0)
+ goto out;
+ *_real_size = event_size;
+ result = hwarc_filter_evt_beacon_WUSB_0100(rc, header,
+ buf_size, _new_size);
+ break;
+ case UWB_RC_EVT_BP_SLOT_CHANGE:
+ *_new_size = *_real_size =
+ sizeof(struct uwb_rc_evt_bp_slot_change_WUSB_0100);
+ result = 0;
+ break;
+
+ case UWB_RC_EVT_DRP_AVAIL:
+ core_size = sizeof(struct uwb_rc_evt_drp_avail_WUSB_0100);
+ offset = offsetof(struct uwb_rc_evt_drp_avail_WUSB_0100,
+ wIELength);
+ event_size = hwarc_get_event_size(rc, rceb, core_size,
+ offset, buf_size);
+ if (event_size < 0)
+ goto out;
+ *_real_size = event_size;
+ result = hwarc_filter_evt_drp_avail_WUSB_0100(
+ rc, header, buf_size, _new_size);
+ break;
+
+ case UWB_RC_EVT_DRP:
+ core_size = sizeof(struct uwb_rc_evt_drp_WUSB_0100);
+ offset = offsetof(struct uwb_rc_evt_drp_WUSB_0100, wIELength);
+ event_size = hwarc_get_event_size(rc, rceb, core_size,
+ offset, buf_size);
+ if (event_size < 0)
+ goto out;
+ *_real_size = event_size;
+ result = hwarc_filter_evt_drp_WUSB_0100(rc, header,
+ buf_size, _new_size);
+ break;
+
+ default:
+ break;
+ }
+out:
+ return result;
+}
+
+/**
+ * Filter data from WUSB device to WHCI driver
+ *
+ * @header: incoming event
+ * @buf_size: size of buffer in which event arrived
+ * @_event_size: actual size of event in the buffer
+ * @_new_size: size of event after filtered
+ *
+ * Filter events based on which protocol the device supports. The WUSB
+ * errata should be the same as WHCI 0.95 so we do not filter that here -
+ * only WUSB 1.0.
+ *
+ * If we don't handle it, we return -ENOANO (why the weird error code?
+ * well, so if I get it, I can pinpoint in the code that raised
+ * it...after all, not too many places use the higher error codes).
+ */
+static
+int hwarc_filter_event(struct uwb_rc *rc, struct uwb_rceb **header,
+ const size_t buf_size, size_t *_real_size,
+ size_t *_new_size)
+{
+ int result = -ENOANO;
+ if (rc->version == 0x0100)
+ result = hwarc_filter_event_WUSB_0100(
+ rc, header, buf_size, _real_size, _new_size);
+ return result;
+}
+
+
+/**
+ * Execute an UWB RC command on HWA
+ *
+ * @rc: Instance of a Radio Controller that is a HWA
+ * @cmd: Buffer containing the RCCB and payload to execute
+ * @cmd_size: Size of the command buffer.
+ *
+ * NOTE: rc's mutex has to be locked
+ */
+static
+int hwarc_cmd(struct uwb_rc *uwb_rc, const struct uwb_rccb *cmd, size_t cmd_size)
+{
+ struct hwarc *hwarc = uwb_rc->priv;
+ return usb_control_msg(
+ hwarc->usb_dev, usb_sndctrlpipe(hwarc->usb_dev, 0),
+ WA_EXEC_RC_CMD, USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
+ 0, hwarc->usb_iface->cur_altsetting->desc.bInterfaceNumber,
+ (void *) cmd, cmd_size, 100 /* FIXME: this is totally arbitrary */);
+}
+
+static
+int hwarc_reset(struct uwb_rc *uwb_rc)
+{
+ struct hwarc *hwarc = uwb_rc->priv;
+ return usb_reset_device(hwarc->usb_dev);
+}
+
+/**
+ * Callback for the notification and event endpoint
+ *
+ * Check's that everything is fine and then passes the read data to
+ * the notification/event handling mechanism (neh).
+ */
+static
+void hwarc_neep_cb(struct urb *urb)
+{
+ struct hwarc *hwarc = urb->context;
+ struct usb_interface *usb_iface = hwarc->usb_iface;
+ struct device *dev = &usb_iface->dev;
+ int result;
+
+ switch (result = urb->status) {
+ case 0:
+ d_printf(3, dev, "NEEP: receive stat %d, %zu bytes\n",
+ urb->status, (size_t)urb->actual_length);
+ uwb_rc_neh_grok(hwarc->uwb_rc, urb->transfer_buffer,
+ urb->actual_length);
+ break;
+ case -ECONNRESET: /* Not an error, but a controlled situation; */
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ d_printf(2, dev, "NEEP: URB reset/noent %d\n", urb->status);
+ goto out;
+ case -ESHUTDOWN: /* going away! */
+ d_printf(2, dev, "NEEP: URB down %d\n", urb->status);
+ goto out;
+ default: /* On general errors, retry unless it gets ugly */
+ if (edc_inc(&hwarc->neep_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME))
+ goto error_exceeded;
+ dev_err(dev, "NEEP: URB error %d\n", urb->status);
+ }
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ d_printf(3, dev, "NEEP: submit %d\n", result);
+ if (result < 0) {
+ dev_err(dev, "NEEP: Can't resubmit URB (%d) resetting device\n",
+ result);
+ goto error;
+ }
+out:
+ return;
+
+error_exceeded:
+ dev_err(dev, "NEEP: URB max acceptable errors "
+ "exceeded, resetting device\n");
+error:
+ uwb_rc_neh_error(hwarc->uwb_rc, result);
+ uwb_rc_reset_all(hwarc->uwb_rc);
+ return;
+}
+
+static void hwarc_init(struct hwarc *hwarc)
+{
+ edc_init(&hwarc->neep_edc);
+}
+
+/**
+ * Initialize the notification/event endpoint stuff
+ *
+ * Note this is effectively a parallel thread; it knows that
+ * hwarc->uwb_rc always exists because the existence of a 'hwarc'
+ * means that there is a reverence on the hwarc->uwb_rc (see
+ * _probe()), and thus _neep_cb() can execute safely.
+ */
+static int hwarc_neep_init(struct uwb_rc *rc)
+{
+ struct hwarc *hwarc = rc->priv;
+ struct usb_interface *iface = hwarc->usb_iface;
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+ struct device *dev = &iface->dev;
+ int result;
+ struct usb_endpoint_descriptor *epd;
+
+ epd = &iface->cur_altsetting->endpoint[0].desc;
+ hwarc->rd_buffer = (void *) __get_free_page(GFP_KERNEL);
+ if (hwarc->rd_buffer == NULL) {
+ dev_err(dev, "Unable to allocate notification's read buffer\n");
+ goto error_rd_buffer;
+ }
+ hwarc->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (hwarc->neep_urb == NULL) {
+ dev_err(dev, "Unable to allocate notification URB\n");
+ goto error_urb_alloc;
+ }
+ usb_fill_int_urb(hwarc->neep_urb, usb_dev,
+ usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+ hwarc->rd_buffer, PAGE_SIZE,
+ hwarc_neep_cb, hwarc, epd->bInterval);
+ result = usb_submit_urb(hwarc->neep_urb, GFP_ATOMIC);
+ if (result < 0) {
+ dev_err(dev, "Cannot submit notification URB: %d\n", result);
+ goto error_neep_submit;
+ }
+ return 0;
+
+error_neep_submit:
+ usb_free_urb(hwarc->neep_urb);
+error_urb_alloc:
+ free_page((unsigned long)hwarc->rd_buffer);
+error_rd_buffer:
+ return -ENOMEM;
+}
+
+
+/** Clean up all the notification endpoint resources */
+static void hwarc_neep_release(struct uwb_rc *rc)
+{
+ struct hwarc *hwarc = rc->priv;
+
+ usb_kill_urb(hwarc->neep_urb);
+ usb_free_urb(hwarc->neep_urb);
+ free_page((unsigned long)hwarc->rd_buffer);
+}
+
+/**
+ * Get the version from class-specific descriptor
+ *
+ * NOTE: this descriptor comes with the big bundled configuration
+ * descriptor that includes the interfaces' and endpoints', so
+ * we just look for it in the cached copy kept by the USB stack.
+ *
+ * NOTE2: We convert LE fields to CPU order.
+ */
+static int hwarc_get_version(struct uwb_rc *rc)
+{
+ int result;
+
+ struct hwarc *hwarc = rc->priv;
+ struct uwb_rc_control_intf_class_desc *descr;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct usb_device *usb_dev = hwarc->usb_dev;
+ char *itr;
+ struct usb_descriptor_header *hdr;
+ size_t itr_size, actconfig_idx;
+ u16 version;
+
+ actconfig_idx = (usb_dev->actconfig - usb_dev->config) /
+ sizeof(usb_dev->config[0]);
+ itr = usb_dev->rawdescriptors[actconfig_idx];
+ itr_size = le16_to_cpu(usb_dev->actconfig->desc.wTotalLength);
+ while (itr_size >= sizeof(*hdr)) {
+ hdr = (struct usb_descriptor_header *) itr;
+ d_printf(3, dev, "Extra device descriptor: "
+ "type %02x/%u bytes @ %zu (%zu left)\n",
+ hdr->bDescriptorType, hdr->bLength,
+ (itr - usb_dev->rawdescriptors[actconfig_idx]),
+ itr_size);
+ if (hdr->bDescriptorType == USB_DT_CS_RADIO_CONTROL)
+ goto found;
+ itr += hdr->bLength;
+ itr_size -= hdr->bLength;
+ }
+ dev_err(dev, "cannot find Radio Control Interface Class descriptor\n");
+ return -ENODEV;
+
+found:
+ result = -EINVAL;
+ if (hdr->bLength > itr_size) { /* is it available? */
+ dev_err(dev, "incomplete Radio Control Interface Class "
+ "descriptor (%zu bytes left, %u needed)\n",
+ itr_size, hdr->bLength);
+ goto error;
+ }
+ if (hdr->bLength < sizeof(*descr)) {
+ dev_err(dev, "short Radio Control Interface Class "
+ "descriptor\n");
+ goto error;
+ }
+ descr = (struct uwb_rc_control_intf_class_desc *) hdr;
+ /* Make LE fields CPU order */
+ version = __le16_to_cpu(descr->bcdRCIVersion);
+ if (version != 0x0100) {
+ dev_err(dev, "Device reports protocol version 0x%04x. We "
+ "do not support that. \n", version);
+ result = -EINVAL;
+ goto error;
+ }
+ rc->version = version;
+ d_printf(3, dev, "Device supports WUSB protocol version 0x%04x \n",
+ rc->version);
+ result = 0;
+error:
+ return result;
+}
+
+/*
+ * By creating a 'uwb_rc', we have a reference on it -- that reference
+ * is the one we drop when we disconnect.
+ *
+ * No need to switch altsettings; according to WUSB1.0[8.6.1.1], there
+ * is only one altsetting allowed.
+ */
+static int hwarc_probe(struct usb_interface *iface,
+ const struct usb_device_id *id)
+{
+ int result;
+ struct uwb_rc *uwb_rc;
+ struct hwarc *hwarc;
+ struct device *dev = &iface->dev;
+
+ result = -ENOMEM;
+ uwb_rc = uwb_rc_alloc();
+ if (uwb_rc == NULL) {
+ dev_err(dev, "unable to allocate RC instance\n");
+ goto error_rc_alloc;
+ }
+ hwarc = kzalloc(sizeof(*hwarc), GFP_KERNEL);
+ if (hwarc == NULL) {
+ dev_err(dev, "unable to allocate HWA RC instance\n");
+ goto error_alloc;
+ }
+ hwarc_init(hwarc);
+ hwarc->usb_dev = usb_get_dev(interface_to_usbdev(iface));
+ hwarc->usb_iface = usb_get_intf(iface);
+ hwarc->uwb_rc = uwb_rc;
+
+ uwb_rc->owner = THIS_MODULE;
+ uwb_rc->start = hwarc_neep_init;
+ uwb_rc->stop = hwarc_neep_release;
+ uwb_rc->cmd = hwarc_cmd;
+ uwb_rc->reset = hwarc_reset;
+ if (id->driver_info & WUSB_QUIRK_WHCI_CMD_EVT) {
+ uwb_rc->filter_cmd = NULL;
+ uwb_rc->filter_event = NULL;
+ } else {
+ uwb_rc->filter_cmd = hwarc_filter_cmd;
+ uwb_rc->filter_event = hwarc_filter_event;
+ }
+
+ result = uwb_rc_add(uwb_rc, dev, hwarc);
+ if (result < 0)
+ goto error_rc_add;
+ result = hwarc_get_version(uwb_rc);
+ if (result < 0) {
+ dev_err(dev, "cannot retrieve version of RC \n");
+ goto error_get_version;
+ }
+ usb_set_intfdata(iface, hwarc);
+ return 0;
+
+error_get_version:
+ uwb_rc_rm(uwb_rc);
+error_rc_add:
+ usb_put_intf(iface);
+ usb_put_dev(hwarc->usb_dev);
+error_alloc:
+ uwb_rc_put(uwb_rc);
+error_rc_alloc:
+ return result;
+}
+
+static void hwarc_disconnect(struct usb_interface *iface)
+{
+ struct hwarc *hwarc = usb_get_intfdata(iface);
+ struct uwb_rc *uwb_rc = hwarc->uwb_rc;
+
+ usb_set_intfdata(hwarc->usb_iface, NULL);
+ uwb_rc_rm(uwb_rc);
+ usb_put_intf(hwarc->usb_iface);
+ usb_put_dev(hwarc->usb_dev);
+ d_printf(1, &hwarc->usb_iface->dev, "freed hwarc %p\n", hwarc);
+ kfree(hwarc);
+ uwb_rc_put(uwb_rc); /* when creating the device, refcount = 1 */
+}
+
+/** USB device ID's that we handle */
+static struct usb_device_id hwarc_id_table[] = {
+ /* D-Link DUB-1210 */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3d02, 0xe0, 0x01, 0x02),
+ .driver_info = WUSB_QUIRK_WHCI_CMD_EVT },
+ /* Intel i1480 (using firmware 1.3PA2-20070828) */
+ { USB_DEVICE_AND_INTERFACE_INFO(0x8086, 0x0c3b, 0xe0, 0x01, 0x02),
+ .driver_info = WUSB_QUIRK_WHCI_CMD_EVT },
+ /* Generic match for the Radio Control interface */
+ { USB_INTERFACE_INFO(0xe0, 0x01, 0x02), },
+ { },
+};
+MODULE_DEVICE_TABLE(usb, hwarc_id_table);
+
+static struct usb_driver hwarc_driver = {
+ .name = "hwa-rc",
+ .probe = hwarc_probe,
+ .disconnect = hwarc_disconnect,
+ .id_table = hwarc_id_table,
+};
+
+static int __init hwarc_driver_init(void)
+{
+ int result;
+ result = usb_register(&hwarc_driver);
+ if (result < 0)
+ printk(KERN_ERR "HWA-RC: Cannot register USB driver: %d\n",
+ result);
+ return result;
+
+}
+module_init(hwarc_driver_init);
+
+static void __exit hwarc_driver_exit(void)
+{
+ usb_deregister(&hwarc_driver);
+}
+module_exit(hwarc_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Host Wireless Adapter Radio Control Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+obj-$(CONFIG_UWB_I1480U) += dfu/ i1480-est.o
+obj-$(CONFIG_UWB_I1480U_WLP) += i1480u-wlp/
--- /dev/null
+obj-$(CONFIG_UWB_I1480U) += i1480-dfu-usb.o
+
+i1480-dfu-usb-objs := \
+ dfu.o \
+ mac.o \
+ phy.o \
+ usb.o
+
+
--- /dev/null
+/*
+ * Intel Wireless UWB Link 1480
+ * Main driver
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Common code for firmware upload used by the USB and PCI version;
+ * i1480_fw_upload() takes a device descriptor and uses the function
+ * pointers it provides to upload firmware and prepare the PHY.
+ *
+ * As well, provides common functions used by the rest of the code.
+ */
+#include "i1480-dfu.h"
+#include <linux/errno.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/device.h>
+#include <linux/uwb.h>
+#include <linux/random.h>
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * i1480_rceb_check - Check RCEB for expected field values
+ * @i1480: pointer to device for which RCEB is being checked
+ * @rceb: RCEB being checked
+ * @cmd: which command the RCEB is related to
+ * @context: expected context
+ * @expected_type: expected event type
+ * @expected_event: expected event
+ *
+ * If @cmd is NULL, do not print error messages, but still return an error
+ * code.
+ *
+ * Return 0 if @rceb matches the expected values, -EINVAL otherwise.
+ */
+int i1480_rceb_check(const struct i1480 *i1480, const struct uwb_rceb *rceb,
+ const char *cmd, u8 context, u8 expected_type,
+ unsigned expected_event)
+{
+ int result = 0;
+ struct device *dev = i1480->dev;
+ if (rceb->bEventContext != context) {
+ if (cmd)
+ dev_err(dev, "%s: unexpected context id 0x%02x "
+ "(expected 0x%02x)\n", cmd,
+ rceb->bEventContext, context);
+ result = -EINVAL;
+ }
+ if (rceb->bEventType != expected_type) {
+ if (cmd)
+ dev_err(dev, "%s: unexpected event type 0x%02x "
+ "(expected 0x%02x)\n", cmd,
+ rceb->bEventType, expected_type);
+ result = -EINVAL;
+ }
+ if (le16_to_cpu(rceb->wEvent) != expected_event) {
+ if (cmd)
+ dev_err(dev, "%s: unexpected event 0x%04x "
+ "(expected 0x%04x)\n", cmd,
+ le16_to_cpu(rceb->wEvent), expected_event);
+ result = -EINVAL;
+ }
+ return result;
+}
+EXPORT_SYMBOL_GPL(i1480_rceb_check);
+
+
+/**
+ * Execute a Radio Control Command
+ *
+ * Command data has to be in i1480->cmd_buf.
+ *
+ * @returns size of the reply data filled in i1480->evt_buf or < 0 errno
+ * code on error.
+ */
+ssize_t i1480_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size,
+ size_t reply_size)
+{
+ ssize_t result;
+ struct uwb_rceb *reply = i1480->evt_buf;
+ struct uwb_rccb *cmd = i1480->cmd_buf;
+ u16 expected_event = reply->wEvent;
+ u8 expected_type = reply->bEventType;
+ u8 context;
+
+ d_fnstart(3, i1480->dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
+ init_completion(&i1480->evt_complete);
+ i1480->evt_result = -EINPROGRESS;
+ do {
+ get_random_bytes(&context, 1);
+ } while (context == 0x00 || context == 0xff);
+ cmd->bCommandContext = context;
+ result = i1480->cmd(i1480, cmd_name, cmd_size);
+ if (result < 0)
+ goto error;
+ /* wait for the callback to report a event was received */
+ result = wait_for_completion_interruptible_timeout(
+ &i1480->evt_complete, HZ);
+ if (result == 0) {
+ result = -ETIMEDOUT;
+ goto error;
+ }
+ if (result < 0)
+ goto error;
+ result = i1480->evt_result;
+ if (result < 0) {
+ dev_err(i1480->dev, "%s: command reply reception failed: %zd\n",
+ cmd_name, result);
+ goto error;
+ }
+ /*
+ * Firmware versions >= 1.4.12224 for IOGear GUWA100U generate a
+ * spurious notification after firmware is downloaded. So check whether
+ * the receibed RCEB is such notification before assuming that the
+ * command has failed.
+ */
+ if (i1480_rceb_check(i1480, i1480->evt_buf, NULL,
+ 0, 0xfd, 0x0022) == 0) {
+ /* Now wait for the actual RCEB for this command. */
+ result = i1480->wait_init_done(i1480);
+ if (result < 0)
+ goto error;
+ result = i1480->evt_result;
+ }
+ if (result != reply_size) {
+ dev_err(i1480->dev, "%s returned only %zu bytes, %zu expected\n",
+ cmd_name, result, reply_size);
+ result = -EINVAL;
+ goto error;
+ }
+ /* Verify we got the right event in response */
+ result = i1480_rceb_check(i1480, i1480->evt_buf, cmd_name, context,
+ expected_type, expected_event);
+error:
+ d_fnend(3, i1480->dev, "(%p, %s, %zu) = %zd\n",
+ i1480, cmd_name, cmd_size, result);
+ return result;
+}
+EXPORT_SYMBOL_GPL(i1480_cmd);
+
+
+static
+int i1480_print_state(struct i1480 *i1480)
+{
+ int result;
+ u32 *buf = (u32 *) i1480->cmd_buf;
+
+ result = i1480->read(i1480, 0x80080000, 2 * sizeof(*buf));
+ if (result < 0) {
+ dev_err(i1480->dev, "cannot read U & L states: %d\n", result);
+ goto error;
+ }
+ dev_info(i1480->dev, "state U 0x%08x, L 0x%08x\n", buf[0], buf[1]);
+error:
+ return result;
+}
+
+
+/*
+ * PCI probe, firmware uploader
+ *
+ * _mac_fw_upload() will call rc_setup(), which needs an rc_release().
+ */
+int i1480_fw_upload(struct i1480 *i1480)
+{
+ int result;
+
+ result = i1480_pre_fw_upload(i1480); /* PHY pre fw */
+ if (result < 0 && result != -ENOENT) {
+ i1480_print_state(i1480);
+ goto error;
+ }
+ result = i1480_mac_fw_upload(i1480); /* MAC fw */
+ if (result < 0) {
+ if (result == -ENOENT)
+ dev_err(i1480->dev, "Cannot locate MAC FW file '%s'\n",
+ i1480->mac_fw_name);
+ else
+ i1480_print_state(i1480);
+ goto error;
+ }
+ result = i1480_phy_fw_upload(i1480); /* PHY fw */
+ if (result < 0 && result != -ENOENT) {
+ i1480_print_state(i1480);
+ goto error_rc_release;
+ }
+ /*
+ * FIXME: find some reliable way to check whether firmware is running
+ * properly. Maybe use some standard request that has no side effects?
+ */
+ dev_info(i1480->dev, "firmware uploaded successfully\n");
+error_rc_release:
+ if (i1480->rc_release)
+ i1480->rc_release(i1480);
+ result = 0;
+error:
+ return result;
+}
+EXPORT_SYMBOL_GPL(i1480_fw_upload);
--- /dev/null
+/*
+ * i1480 Device Firmware Upload
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver is the firmware uploader for the Intel Wireless UWB
+ * Link 1480 device (both in the USB and PCI incarnations).
+ *
+ * The process is quite simple: we stop the device, write the firmware
+ * to its memory and then restart it. Wait for the device to let us
+ * know it is done booting firmware. Ready.
+ *
+ * We might have to upload before or after a phy firmware (which might
+ * be done in two methods, using a normal firmware image or through
+ * the MPI port).
+ *
+ * Because USB and PCI use common methods, we just make ops out of the
+ * common operations (read, write, wait_init_done and cmd) and
+ * implement them in usb.c and pci.c.
+ *
+ * The flow is (some parts omitted):
+ *
+ * i1480_{usb,pci}_probe() On enumerate/discovery
+ * i1480_fw_upload()
+ * i1480_pre_fw_upload()
+ * __mac_fw_upload()
+ * fw_hdrs_load()
+ * mac_fw_hdrs_push()
+ * i1480->write() [i1480_{usb,pci}_write()]
+ * i1480_fw_cmp()
+ * i1480->read() [i1480_{usb,pci}_read()]
+ * i1480_mac_fw_upload()
+ * __mac_fw_upload()
+ * i1480->setup(()
+ * i1480->wait_init_done()
+ * i1480_cmd_reset()
+ * i1480->cmd() [i1480_{usb,pci}_cmd()]
+ * ...
+ * i1480_phy_fw_upload()
+ * request_firmware()
+ * i1480_mpi_write()
+ * i1480->cmd() [i1480_{usb,pci}_cmd()]
+ *
+ * Once the probe function enumerates the device and uploads the
+ * firmware, we just exit with -ENODEV, as we don't really want to
+ * attach to the device.
+ */
+#ifndef __i1480_DFU_H__
+#define __i1480_DFU_H__
+
+#include <linux/uwb/spec.h>
+#include <linux/types.h>
+#include <linux/completion.h>
+
+#define i1480_FW_UPLOAD_MODE_MASK (cpu_to_le32(0x00000018))
+
+#if i1480_FW > 0x00000302
+#define i1480_RCEB_EXTENDED
+#endif
+
+struct uwb_rccb;
+struct uwb_rceb;
+
+/*
+ * Common firmware upload handlers
+ *
+ * Normally you embed this struct in another one specific to your hw.
+ *
+ * @write Write to device's memory from buffer.
+ * @read Read from device's memory to i1480->evt_buf.
+ * @setup Setup device after basic firmware is uploaded
+ * @wait_init_done
+ * Wait for the device to send a notification saying init
+ * is done.
+ * @cmd FOP for issuing the command to the hardware. The
+ * command data is contained in i1480->cmd_buf and the size
+ * is supplied as an argument. The command replied is put
+ * in i1480->evt_buf and the size in i1480->evt_result (or if
+ * an error, a < 0 errno code).
+ *
+ * @cmd_buf Memory buffer used to send commands to the device.
+ * Allocated by the upper layers i1480_fw_upload().
+ * Size has to be @buf_size.
+ * @evt_buf Memory buffer used to place the async notifications
+ * received by the hw. Allocated by the upper layers
+ * i1480_fw_upload().
+ * Size has to be @buf_size.
+ * @cmd_complete
+ * Low level driver uses this to notify code waiting afor
+ * an event that the event has arrived and data is in
+ * i1480->evt_buf (and size/result in i1480->evt_result).
+ * @hw_rev
+ * Use this value to activate dfu code to support new revisions
+ * of hardware. i1480_init() sets this to a default value.
+ * It should be updated by the USB and PCI code.
+ */
+struct i1480 {
+ struct device *dev;
+
+ int (*write)(struct i1480 *, u32 addr, const void *, size_t);
+ int (*read)(struct i1480 *, u32 addr, size_t);
+ int (*rc_setup)(struct i1480 *);
+ void (*rc_release)(struct i1480 *);
+ int (*wait_init_done)(struct i1480 *);
+ int (*cmd)(struct i1480 *, const char *cmd_name, size_t cmd_size);
+ const char *pre_fw_name;
+ const char *mac_fw_name;
+ const char *mac_fw_name_deprecate; /* FIXME: Will go away */
+ const char *phy_fw_name;
+ u8 hw_rev;
+
+ size_t buf_size; /* size of both evt_buf and cmd_buf */
+ void *evt_buf, *cmd_buf;
+ ssize_t evt_result;
+ struct completion evt_complete;
+};
+
+static inline
+void i1480_init(struct i1480 *i1480)
+{
+ i1480->hw_rev = 1;
+ init_completion(&i1480->evt_complete);
+}
+
+extern int i1480_fw_upload(struct i1480 *);
+extern int i1480_pre_fw_upload(struct i1480 *);
+extern int i1480_mac_fw_upload(struct i1480 *);
+extern int i1480_phy_fw_upload(struct i1480 *);
+extern ssize_t i1480_cmd(struct i1480 *, const char *, size_t, size_t);
+extern int i1480_rceb_check(const struct i1480 *,
+ const struct uwb_rceb *, const char *, u8,
+ u8, unsigned);
+
+enum {
+ /* Vendor specific command type */
+ i1480_CET_VS1 = 0xfd,
+ /* i1480 commands */
+ i1480_CMD_SET_IP_MAS = 0x000e,
+ i1480_CMD_GET_MAC_PHY_INFO = 0x0003,
+ i1480_CMD_MPI_WRITE = 0x000f,
+ i1480_CMD_MPI_READ = 0x0010,
+ /* i1480 events */
+#if i1480_FW > 0x00000302
+ i1480_EVT_CONFIRM = 0x0002,
+ i1480_EVT_RM_INIT_DONE = 0x0101,
+ i1480_EVT_DEV_ADD = 0x0103,
+ i1480_EVT_DEV_RM = 0x0104,
+ i1480_EVT_DEV_ID_CHANGE = 0x0105,
+ i1480_EVT_GET_MAC_PHY_INFO = i1480_CMD_GET_MAC_PHY_INFO,
+#else
+ i1480_EVT_CONFIRM = 0x0002,
+ i1480_EVT_RM_INIT_DONE = 0x0101,
+ i1480_EVT_DEV_ADD = 0x0103,
+ i1480_EVT_DEV_RM = 0x0104,
+ i1480_EVT_DEV_ID_CHANGE = 0x0105,
+ i1480_EVT_GET_MAC_PHY_INFO = i1480_EVT_CONFIRM,
+#endif
+};
+
+
+struct i1480_evt_confirm {
+ struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+ __le16 wParamLength;
+#endif
+ u8 bResultCode;
+} __attribute__((packed));
+
+
+struct i1480_rceb {
+ struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+ __le16 wParamLength;
+#endif
+} __attribute__((packed));
+
+
+/**
+ * Get MAC & PHY Information confirm event structure
+ *
+ * Confirm event returned by the command.
+ */
+struct i1480_evt_confirm_GMPI {
+#if i1480_FW > 0x00000302
+ struct uwb_rceb rceb;
+ __le16 wParamLength;
+ __le16 status;
+ u8 mac_addr[6]; /* EUI-64 bit IEEE address [still 8 bytes?] */
+ u8 dev_addr[2];
+ __le16 mac_fw_rev; /* major = v >> 8; minor = v & 0xff */
+ u8 hw_rev;
+ u8 phy_vendor;
+ u8 phy_rev; /* major v = >> 8; minor = v & 0xff */
+ __le16 mac_caps;
+ u8 phy_caps[3];
+ u8 key_stores;
+ __le16 mcast_addr_stores;
+ u8 sec_mode_supported;
+#else
+ struct uwb_rceb rceb;
+ u8 status;
+ u8 mac_addr[8]; /* EUI-64 bit IEEE address [still 8 bytes?] */
+ u8 dev_addr[2];
+ __le16 mac_fw_rev; /* major = v >> 8; minor = v & 0xff */
+ __le16 phy_fw_rev; /* major v = >> 8; minor = v & 0xff */
+ __le16 mac_caps;
+ u8 phy_caps;
+ u8 key_stores;
+ __le16 mcast_addr_stores;
+ u8 sec_mode_supported;
+#endif
+} __attribute__((packed));
+
+
+struct i1480_cmd_mpi_write {
+ struct uwb_rccb rccb;
+ __le16 size;
+ u8 data[];
+};
+
+
+struct i1480_cmd_mpi_read {
+ struct uwb_rccb rccb;
+ __le16 size;
+ struct {
+ u8 page, offset;
+ } __attribute__((packed)) data[];
+} __attribute__((packed));
+
+
+struct i1480_evt_mpi_read {
+ struct uwb_rceb rceb;
+#ifdef i1480_RCEB_EXTENDED
+ __le16 wParamLength;
+#endif
+ u8 bResultCode;
+ __le16 size;
+ struct {
+ u8 page, offset, value;
+ } __attribute__((packed)) data[];
+} __attribute__((packed));
+
+
+#endif /* #ifndef __i1480_DFU_H__ */
--- /dev/null
+/*
+ * Intel Wireless UWB Link 1480
+ * MAC Firmware upload implementation
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Implementation of the code for parsing the firmware file (extract
+ * the headers and binary code chunks) in the fw_*() functions. The
+ * code to upload pre and mac firmwares is the same, so it uses a
+ * common entry point in __mac_fw_upload(), which uses the i1480
+ * function pointers to push the firmware to the device.
+ */
+#include <linux/delay.h>
+#include <linux/firmware.h>
+#include <linux/uwb.h>
+#include "i1480-dfu.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * Descriptor for a continuous segment of MAC fw data
+ */
+struct fw_hdr {
+ unsigned long address;
+ size_t length;
+ const u32 *bin;
+ struct fw_hdr *next;
+};
+
+
+/* Free a chain of firmware headers */
+static
+void fw_hdrs_free(struct fw_hdr *hdr)
+{
+ struct fw_hdr *next;
+
+ while (hdr) {
+ next = hdr->next;
+ kfree(hdr);
+ hdr = next;
+ }
+}
+
+
+/* Fill a firmware header descriptor from a memory buffer */
+static
+int fw_hdr_load(struct i1480 *i1480, struct fw_hdr *hdr, unsigned hdr_cnt,
+ const char *_data, const u32 *data_itr, const u32 *data_top)
+{
+ size_t hdr_offset = (const char *) data_itr - _data;
+ size_t remaining_size = (void *) data_top - (void *) data_itr;
+ if (data_itr + 2 > data_top) {
+ dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in header at "
+ "offset %zu, limit %zu\n",
+ hdr_cnt, hdr_offset,
+ (const char *) data_itr + 2 - _data,
+ (const char *) data_top - _data);
+ return -EINVAL;
+ }
+ hdr->next = NULL;
+ hdr->address = le32_to_cpu(*data_itr++);
+ hdr->length = le32_to_cpu(*data_itr++);
+ hdr->bin = data_itr;
+ if (hdr->length > remaining_size) {
+ dev_err(i1480->dev, "fw hdr #%u/%zu: EOF reached in data; "
+ "chunk too long (%zu bytes), only %zu left\n",
+ hdr_cnt, hdr_offset, hdr->length, remaining_size);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+/**
+ * Get a buffer where the firmware is supposed to be and create a
+ * chain of headers linking them together.
+ *
+ * @phdr: where to place the pointer to the first header (headers link
+ * to the next via the @hdr->next ptr); need to free the whole
+ * chain when done.
+ *
+ * @_data: Pointer to the data buffer.
+ *
+ * @_data_size: Size of the data buffer (bytes); data size has to be a
+ * multiple of 4. Function will fail if not.
+ *
+ * Goes over the whole binary blob; reads the first chunk and creates
+ * a fw hdr from it (which points to where the data is in @_data and
+ * the length of the chunk); then goes on to the next chunk until
+ * done. Each header is linked to the next.
+ */
+static
+int fw_hdrs_load(struct i1480 *i1480, struct fw_hdr **phdr,
+ const char *_data, size_t data_size)
+{
+ int result;
+ unsigned hdr_cnt = 0;
+ u32 *data = (u32 *) _data, *data_itr, *data_top;
+ struct fw_hdr *hdr, **prev_hdr = phdr;
+
+ result = -EINVAL;
+ /* Check size is ok and pointer is aligned */
+ if (data_size % sizeof(u32) != 0)
+ goto error;
+ if ((unsigned long) _data % sizeof(u16) != 0)
+ goto error;
+ *phdr = NULL;
+ data_itr = data;
+ data_top = (u32 *) (_data + data_size);
+ while (data_itr < data_top) {
+ result = -ENOMEM;
+ hdr = kmalloc(sizeof(*hdr), GFP_KERNEL);
+ if (hdr == NULL) {
+ dev_err(i1480->dev, "Cannot allocate fw header "
+ "for chunk #%u\n", hdr_cnt);
+ goto error_alloc;
+ }
+ result = fw_hdr_load(i1480, hdr, hdr_cnt,
+ _data, data_itr, data_top);
+ if (result < 0)
+ goto error_load;
+ data_itr += 2 + hdr->length;
+ *prev_hdr = hdr;
+ prev_hdr = &hdr->next;
+ hdr_cnt++;
+ };
+ *prev_hdr = NULL;
+ return 0;
+
+error_load:
+ kfree(hdr);
+error_alloc:
+ fw_hdrs_free(*phdr);
+error:
+ return result;
+}
+
+
+/**
+ * Compares a chunk of fw with one in the devices's memory
+ *
+ * @i1480: Device instance
+ * @hdr: Pointer to the firmware chunk
+ * @returns: 0 if equal, < 0 errno on error. If > 0, it is the offset
+ * where the difference was found (plus one).
+ *
+ * Kind of dirty and simplistic, but does the trick in both the PCI
+ * and USB version. We do a quick[er] memcmp(), and if it fails, we do
+ * a byte-by-byte to find the offset.
+ */
+static
+ssize_t i1480_fw_cmp(struct i1480 *i1480, struct fw_hdr *hdr)
+{
+ ssize_t result = 0;
+ u32 src_itr = 0, cnt;
+ size_t size = hdr->length*sizeof(hdr->bin[0]);
+ size_t chunk_size;
+ u8 *bin = (u8 *) hdr->bin;
+
+ while (size > 0) {
+ chunk_size = size < i1480->buf_size ? size : i1480->buf_size;
+ result = i1480->read(i1480, hdr->address + src_itr, chunk_size);
+ if (result < 0) {
+ dev_err(i1480->dev, "error reading for verification: "
+ "%zd\n", result);
+ goto error;
+ }
+ if (memcmp(i1480->cmd_buf, bin + src_itr, result)) {
+ u8 *buf = i1480->cmd_buf;
+ d_printf(2, i1480->dev,
+ "original data @ %p + %u, %zu bytes\n",
+ bin, src_itr, result);
+ d_dump(4, i1480->dev, bin + src_itr, result);
+ for (cnt = 0; cnt < result; cnt++)
+ if (bin[src_itr + cnt] != buf[cnt]) {
+ dev_err(i1480->dev, "byte failed at "
+ "src_itr %u cnt %u [0x%02x "
+ "vs 0x%02x]\n", src_itr, cnt,
+ bin[src_itr + cnt], buf[cnt]);
+ result = src_itr + cnt + 1;
+ goto cmp_failed;
+ }
+ }
+ src_itr += result;
+ size -= result;
+ }
+ result = 0;
+error:
+cmp_failed:
+ return result;
+}
+
+
+/**
+ * Writes firmware headers to the device.
+ *
+ * @prd: PRD instance
+ * @hdr: Processed firmware
+ * @returns: 0 if ok, < 0 errno on error.
+ */
+static
+int mac_fw_hdrs_push(struct i1480 *i1480, struct fw_hdr *hdr,
+ const char *fw_name, const char *fw_tag)
+{
+ struct device *dev = i1480->dev;
+ ssize_t result = 0;
+ struct fw_hdr *hdr_itr;
+ int verif_retry_count;
+
+ d_fnstart(3, dev, "(%p, %p)\n", i1480, hdr);
+ /* Now, header by header, push them to the hw */
+ for (hdr_itr = hdr; hdr_itr != NULL; hdr_itr = hdr_itr->next) {
+ verif_retry_count = 0;
+retry:
+ dev_dbg(dev, "fw chunk (%zu @ 0x%08lx)\n",
+ hdr_itr->length * sizeof(hdr_itr->bin[0]),
+ hdr_itr->address);
+ result = i1480->write(i1480, hdr_itr->address, hdr_itr->bin,
+ hdr_itr->length*sizeof(hdr_itr->bin[0]));
+ if (result < 0) {
+ dev_err(dev, "%s fw '%s': write failed (%zuB @ 0x%lx):"
+ " %zd\n", fw_tag, fw_name,
+ hdr_itr->length * sizeof(hdr_itr->bin[0]),
+ hdr_itr->address, result);
+ break;
+ }
+ result = i1480_fw_cmp(i1480, hdr_itr);
+ if (result < 0) {
+ dev_err(dev, "%s fw '%s': verification read "
+ "failed (%zuB @ 0x%lx): %zd\n",
+ fw_tag, fw_name,
+ hdr_itr->length * sizeof(hdr_itr->bin[0]),
+ hdr_itr->address, result);
+ break;
+ }
+ if (result > 0) { /* Offset where it failed + 1 */
+ result--;
+ dev_err(dev, "%s fw '%s': WARNING: verification "
+ "failed at 0x%lx: retrying\n",
+ fw_tag, fw_name, hdr_itr->address + result);
+ if (++verif_retry_count < 3)
+ goto retry; /* write this block again! */
+ dev_err(dev, "%s fw '%s': verification failed at 0x%lx: "
+ "tried %d times\n", fw_tag, fw_name,
+ hdr_itr->address + result, verif_retry_count);
+ result = -EINVAL;
+ break;
+ }
+ }
+ d_fnend(3, dev, "(%zd)\n", result);
+ return result;
+}
+
+
+/** Puts the device in firmware upload mode.*/
+static
+int mac_fw_upload_enable(struct i1480 *i1480)
+{
+ int result;
+ u32 reg = 0x800000c0;
+ u32 *buffer = (u32 *)i1480->cmd_buf;
+
+ if (i1480->hw_rev > 1)
+ reg = 0x8000d0d4;
+ result = i1480->read(i1480, reg, sizeof(u32));
+ if (result < 0)
+ goto error_cmd;
+ *buffer &= ~i1480_FW_UPLOAD_MODE_MASK;
+ result = i1480->write(i1480, reg, buffer, sizeof(u32));
+ if (result < 0)
+ goto error_cmd;
+ return 0;
+error_cmd:
+ dev_err(i1480->dev, "can't enable fw upload mode: %d\n", result);
+ return result;
+}
+
+
+/** Gets the device out of firmware upload mode. */
+static
+int mac_fw_upload_disable(struct i1480 *i1480)
+{
+ int result;
+ u32 reg = 0x800000c0;
+ u32 *buffer = (u32 *)i1480->cmd_buf;
+
+ if (i1480->hw_rev > 1)
+ reg = 0x8000d0d4;
+ result = i1480->read(i1480, reg, sizeof(u32));
+ if (result < 0)
+ goto error_cmd;
+ *buffer |= i1480_FW_UPLOAD_MODE_MASK;
+ result = i1480->write(i1480, reg, buffer, sizeof(u32));
+ if (result < 0)
+ goto error_cmd;
+ return 0;
+error_cmd:
+ dev_err(i1480->dev, "can't disable fw upload mode: %d\n", result);
+ return result;
+}
+
+
+
+/**
+ * Generic function for uploading a MAC firmware.
+ *
+ * @i1480: Device instance
+ * @fw_name: Name of firmware file to upload.
+ * @fw_tag: Name of the firmware type (for messages)
+ * [eg: MAC, PRE]
+ * @do_wait: Wait for device to emit initialization done message (0
+ * for PRE fws, 1 for MAC fws).
+ * @returns: 0 if ok, < 0 errno on error.
+ */
+static
+int __mac_fw_upload(struct i1480 *i1480, const char *fw_name,
+ const char *fw_tag)
+{
+ int result;
+ const struct firmware *fw;
+ struct fw_hdr *fw_hdrs;
+
+ d_fnstart(3, i1480->dev, "(%p, %s, %s)\n", i1480, fw_name, fw_tag);
+ result = request_firmware(&fw, fw_name, i1480->dev);
+ if (result < 0) /* Up to caller to complain on -ENOENT */
+ goto out;
+ d_printf(3, i1480->dev, "%s fw '%s': uploading\n", fw_tag, fw_name);
+ result = fw_hdrs_load(i1480, &fw_hdrs, fw->data, fw->size);
+ if (result < 0) {
+ dev_err(i1480->dev, "%s fw '%s': failed to parse firmware "
+ "file: %d\n", fw_tag, fw_name, result);
+ goto out_release;
+ }
+ result = mac_fw_upload_enable(i1480);
+ if (result < 0)
+ goto out_hdrs_release;
+ result = mac_fw_hdrs_push(i1480, fw_hdrs, fw_name, fw_tag);
+ mac_fw_upload_disable(i1480);
+out_hdrs_release:
+ if (result >= 0)
+ dev_info(i1480->dev, "%s fw '%s': uploaded\n", fw_tag, fw_name);
+ else
+ dev_err(i1480->dev, "%s fw '%s': failed to upload (%d), "
+ "power cycle device\n", fw_tag, fw_name, result);
+ fw_hdrs_free(fw_hdrs);
+out_release:
+ release_firmware(fw);
+out:
+ d_fnend(3, i1480->dev, "(%p, %s, %s) = %d\n", i1480, fw_name, fw_tag,
+ result);
+ return result;
+}
+
+
+/**
+ * Upload a pre-PHY firmware
+ *
+ */
+int i1480_pre_fw_upload(struct i1480 *i1480)
+{
+ int result;
+ result = __mac_fw_upload(i1480, i1480->pre_fw_name, "PRE");
+ if (result == 0)
+ msleep(400);
+ return result;
+}
+
+
+/**
+ * Reset a the MAC and PHY
+ *
+ * @i1480: Device's instance
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ *
+ * We issue the reset to make sure the UWB controller reinits the PHY;
+ * this way we can now if the PHY init went ok.
+ */
+static
+int i1480_cmd_reset(struct i1480 *i1480)
+{
+ int result;
+ struct uwb_rccb *cmd = (void *) i1480->cmd_buf;
+ struct i1480_evt_reset {
+ struct uwb_rceb rceb;
+ u8 bResultCode;
+ } __attribute__((packed)) *reply = (void *) i1480->evt_buf;
+
+ result = -ENOMEM;
+ cmd->bCommandType = UWB_RC_CET_GENERAL;
+ cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
+ reply->rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply->rceb.wEvent = UWB_RC_CMD_RESET;
+ result = i1480_cmd(i1480, "RESET", sizeof(*cmd), sizeof(*reply));
+ if (result < 0)
+ goto out;
+ if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(i1480->dev, "RESET: command execution failed: %u\n",
+ reply->bResultCode);
+ result = -EIO;
+ }
+out:
+ return result;
+
+}
+
+
+/* Wait for the MAC FW to start running */
+static
+int i1480_fw_is_running_q(struct i1480 *i1480)
+{
+ int cnt = 0;
+ int result;
+ u32 *val = (u32 *) i1480->cmd_buf;
+
+ d_fnstart(3, i1480->dev, "(i1480 %p)\n", i1480);
+ for (cnt = 0; cnt < 10; cnt++) {
+ msleep(100);
+ result = i1480->read(i1480, 0x80080000, 4);
+ if (result < 0) {
+ dev_err(i1480->dev, "Can't read 0x8008000: %d\n", result);
+ goto out;
+ }
+ if (*val == 0x55555555UL) /* fw running? cool */
+ goto out;
+ }
+ dev_err(i1480->dev, "Timed out waiting for fw to start\n");
+ result = -ETIMEDOUT;
+out:
+ d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
+ return result;
+
+}
+
+
+/**
+ * Upload MAC firmware, wait for it to start
+ *
+ * @i1480: Device instance
+ * @fw_name: Name of the file that contains the firmware
+ *
+ * This has to be called after the pre fw has been uploaded (if
+ * there is any).
+ */
+int i1480_mac_fw_upload(struct i1480 *i1480)
+{
+ int result = 0, deprecated_name = 0;
+ struct i1480_rceb *rcebe = (void *) i1480->evt_buf;
+
+ d_fnstart(3, i1480->dev, "(%p)\n", i1480);
+ result = __mac_fw_upload(i1480, i1480->mac_fw_name, "MAC");
+ if (result == -ENOENT) {
+ result = __mac_fw_upload(i1480, i1480->mac_fw_name_deprecate,
+ "MAC");
+ deprecated_name = 1;
+ }
+ if (result < 0)
+ return result;
+ if (deprecated_name == 1)
+ dev_warn(i1480->dev,
+ "WARNING: firmware file name %s is deprecated, "
+ "please rename to %s\n",
+ i1480->mac_fw_name_deprecate, i1480->mac_fw_name);
+ result = i1480_fw_is_running_q(i1480);
+ if (result < 0)
+ goto error_fw_not_running;
+ result = i1480->rc_setup ? i1480->rc_setup(i1480) : 0;
+ if (result < 0) {
+ dev_err(i1480->dev, "Cannot setup after MAC fw upload: %d\n",
+ result);
+ goto error_setup;
+ }
+ result = i1480->wait_init_done(i1480); /* wait init'on */
+ if (result < 0) {
+ dev_err(i1480->dev, "MAC fw '%s': Initialization timed out "
+ "(%d)\n", i1480->mac_fw_name, result);
+ goto error_init_timeout;
+ }
+ /* verify we got the right initialization done event */
+ if (i1480->evt_result != sizeof(*rcebe)) {
+ dev_err(i1480->dev, "MAC fw '%s': initialization event returns "
+ "wrong size (%zu bytes vs %zu needed)\n",
+ i1480->mac_fw_name, i1480->evt_result, sizeof(*rcebe));
+ dump_bytes(i1480->dev, rcebe, min(i1480->evt_result, (ssize_t)32));
+ goto error_size;
+ }
+ result = -EIO;
+ if (i1480_rceb_check(i1480, &rcebe->rceb, NULL, 0, i1480_CET_VS1,
+ i1480_EVT_RM_INIT_DONE) < 0) {
+ dev_err(i1480->dev, "wrong initialization event 0x%02x/%04x/%02x "
+ "received; expected 0x%02x/%04x/00\n",
+ rcebe->rceb.bEventType, le16_to_cpu(rcebe->rceb.wEvent),
+ rcebe->rceb.bEventContext, i1480_CET_VS1,
+ i1480_EVT_RM_INIT_DONE);
+ goto error_init_timeout;
+ }
+ result = i1480_cmd_reset(i1480);
+ if (result < 0)
+ dev_err(i1480->dev, "MAC fw '%s': MBOA reset failed (%d)\n",
+ i1480->mac_fw_name, result);
+error_fw_not_running:
+error_init_timeout:
+error_size:
+error_setup:
+ d_fnend(3, i1480->dev, "(i1480 %p) = %d\n", i1480, result);
+ return result;
+}
--- /dev/null
+/*
+ * Intel Wireless UWB Link 1480
+ * PHY parameters upload
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Code for uploading the PHY parameters to the PHY through the UWB
+ * Radio Control interface.
+ *
+ * We just send the data through the MPI interface using HWA-like
+ * commands and then reset the PHY to make sure it is ok.
+ */
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/usb/wusb.h>
+#include "i1480-dfu.h"
+
+
+/**
+ * Write a value array to an address of the MPI interface
+ *
+ * @i1480: Device descriptor
+ * @data: Data array to write
+ * @size: Size of the data array
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * The data array is organized into pairs:
+ *
+ * ADDRESS VALUE
+ *
+ * ADDRESS is BE 16 bit unsigned, VALUE 8 bit unsigned. Size thus has
+ * to be a multiple of three.
+ */
+static
+int i1480_mpi_write(struct i1480 *i1480, const void *data, size_t size)
+{
+ int result;
+ struct i1480_cmd_mpi_write *cmd = i1480->cmd_buf;
+ struct i1480_evt_confirm *reply = i1480->evt_buf;
+
+ BUG_ON(size > 480);
+ result = -ENOMEM;
+ cmd->rccb.bCommandType = i1480_CET_VS1;
+ cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_WRITE);
+ cmd->size = cpu_to_le16(size);
+ memcpy(cmd->data, data, size);
+ reply->rceb.bEventType = i1480_CET_VS1;
+ reply->rceb.wEvent = i1480_CMD_MPI_WRITE;
+ result = i1480_cmd(i1480, "MPI-WRITE", sizeof(*cmd) + size, sizeof(*reply));
+ if (result < 0)
+ goto out;
+ if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(i1480->dev, "MPI-WRITE: command execution failed: %d\n",
+ reply->bResultCode);
+ result = -EIO;
+ }
+out:
+ return result;
+}
+
+
+/**
+ * Read a value array to from an address of the MPI interface
+ *
+ * @i1480: Device descriptor
+ * @data: where to place the read array
+ * @srcaddr: Where to read from
+ * @size: Size of the data read array
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * The command data array is organized into pairs ADDR0 ADDR1..., and
+ * the returned data in ADDR0 VALUE0 ADDR1 VALUE1...
+ *
+ * We generate the command array to be a sequential read and then
+ * rearrange the result.
+ *
+ * We use the i1480->cmd_buf for the command, i1480->evt_buf for the reply.
+ *
+ * As the reply has to fit in 512 bytes (i1480->evt_buffer), the max amount
+ * of values we can read is (512 - sizeof(*reply)) / 3
+ */
+static
+int i1480_mpi_read(struct i1480 *i1480, u8 *data, u16 srcaddr, size_t size)
+{
+ int result;
+ struct i1480_cmd_mpi_read *cmd = i1480->cmd_buf;
+ struct i1480_evt_mpi_read *reply = i1480->evt_buf;
+ unsigned cnt;
+
+ memset(i1480->cmd_buf, 0x69, 512);
+ memset(i1480->evt_buf, 0x69, 512);
+
+ BUG_ON(size > (i1480->buf_size - sizeof(*reply)) / 3);
+ result = -ENOMEM;
+ cmd->rccb.bCommandType = i1480_CET_VS1;
+ cmd->rccb.wCommand = cpu_to_le16(i1480_CMD_MPI_READ);
+ cmd->size = cpu_to_le16(3*size);
+ for (cnt = 0; cnt < size; cnt++) {
+ cmd->data[cnt].page = (srcaddr + cnt) >> 8;
+ cmd->data[cnt].offset = (srcaddr + cnt) & 0xff;
+ }
+ reply->rceb.bEventType = i1480_CET_VS1;
+ reply->rceb.wEvent = i1480_CMD_MPI_READ;
+ result = i1480_cmd(i1480, "MPI-READ", sizeof(*cmd) + 2*size,
+ sizeof(*reply) + 3*size);
+ if (result < 0)
+ goto out;
+ if (reply->bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(i1480->dev, "MPI-READ: command execution failed: %d\n",
+ reply->bResultCode);
+ result = -EIO;
+ }
+ for (cnt = 0; cnt < size; cnt++) {
+ if (reply->data[cnt].page != (srcaddr + cnt) >> 8)
+ dev_err(i1480->dev, "MPI-READ: page inconsistency at "
+ "index %u: expected 0x%02x, got 0x%02x\n", cnt,
+ (srcaddr + cnt) >> 8, reply->data[cnt].page);
+ if (reply->data[cnt].offset != ((srcaddr + cnt) & 0x00ff))
+ dev_err(i1480->dev, "MPI-READ: offset inconsistency at "
+ "index %u: expected 0x%02x, got 0x%02x\n", cnt,
+ (srcaddr + cnt) & 0x00ff,
+ reply->data[cnt].offset);
+ data[cnt] = reply->data[cnt].value;
+ }
+ result = 0;
+out:
+ return result;
+}
+
+
+/**
+ * Upload a PHY firmware, wait for it to start
+ *
+ * @i1480: Device instance
+ * @fw_name: Name of the file that contains the firmware
+ *
+ * We assume the MAC fw is up and running. This means we can use the
+ * MPI interface to write the PHY firmware. Once done, we issue an
+ * MBOA Reset, which will force the MAC to reset and reinitialize the
+ * PHY. If that works, we are ready to go.
+ *
+ * Max packet size for the MPI write is 512, so the max buffer is 480
+ * (which gives us 160 byte triads of MSB, LSB and VAL for the data).
+ */
+int i1480_phy_fw_upload(struct i1480 *i1480)
+{
+ int result;
+ const struct firmware *fw;
+ const char *data_itr, *data_top;
+ const size_t MAX_BLK_SIZE = 480; /* 160 triads */
+ size_t data_size;
+ u8 phy_stat;
+
+ result = request_firmware(&fw, i1480->phy_fw_name, i1480->dev);
+ if (result < 0)
+ goto out;
+ /* Loop writing data in chunks as big as possible until done. */
+ for (data_itr = fw->data, data_top = data_itr + fw->size;
+ data_itr < data_top; data_itr += MAX_BLK_SIZE) {
+ data_size = min(MAX_BLK_SIZE, (size_t) (data_top - data_itr));
+ result = i1480_mpi_write(i1480, data_itr, data_size);
+ if (result < 0)
+ goto error_mpi_write;
+ }
+ /* Read MPI page 0, offset 6; if 0, PHY was initialized correctly. */
+ result = i1480_mpi_read(i1480, &phy_stat, 0x0006, 1);
+ if (result < 0) {
+ dev_err(i1480->dev, "PHY: can't get status: %d\n", result);
+ goto error_mpi_status;
+ }
+ if (phy_stat != 0) {
+ result = -ENODEV;
+ dev_info(i1480->dev, "error, PHY not ready: %u\n", phy_stat);
+ goto error_phy_status;
+ }
+ dev_info(i1480->dev, "PHY fw '%s': uploaded\n", i1480->phy_fw_name);
+error_phy_status:
+error_mpi_status:
+error_mpi_write:
+ release_firmware(fw);
+ if (result < 0)
+ dev_err(i1480->dev, "PHY fw '%s': failed to upload (%d), "
+ "power cycle device\n", i1480->phy_fw_name, result);
+out:
+ return result;
+}
--- /dev/null
+/*
+ * Intel Wireless UWB Link 1480
+ * USB SKU firmware upload implementation
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This driver will prepare the i1480 device to behave as a real
+ * Wireless USB HWA adaptor by uploading the firmware.
+ *
+ * When the device is connected or driver is loaded, i1480_usb_probe()
+ * is called--this will allocate and initialize the device structure,
+ * fill in the pointers to the common functions (read, write,
+ * wait_init_done and cmd for HWA command execution) and once that is
+ * done, call the common firmware uploading routine. Then clean up and
+ * return -ENODEV, as we don't attach to the device.
+ *
+ * The rest are the basic ops we implement that the fw upload code
+ * uses to do its job. All the ops in the common code are i1480->NAME,
+ * the functions are i1480_usb_NAME().
+ */
+#include <linux/module.h>
+#include <linux/version.h>
+#include <linux/usb.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/uwb.h>
+#include <linux/usb/wusb.h>
+#include <linux/usb/wusb-wa.h>
+#include "i1480-dfu.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+struct i1480_usb {
+ struct i1480 i1480;
+ struct usb_device *usb_dev;
+ struct usb_interface *usb_iface;
+ struct urb *neep_urb; /* URB for reading from EP1 */
+};
+
+
+static
+void i1480_usb_init(struct i1480_usb *i1480_usb)
+{
+ i1480_init(&i1480_usb->i1480);
+}
+
+
+static
+int i1480_usb_create(struct i1480_usb *i1480_usb, struct usb_interface *iface)
+{
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+ int result = -ENOMEM;
+
+ i1480_usb->usb_dev = usb_get_dev(usb_dev); /* bind the USB device */
+ i1480_usb->usb_iface = usb_get_intf(iface);
+ usb_set_intfdata(iface, i1480_usb); /* Bind the driver to iface0 */
+ i1480_usb->neep_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (i1480_usb->neep_urb == NULL)
+ goto error;
+ return 0;
+
+error:
+ usb_set_intfdata(iface, NULL);
+ usb_put_intf(iface);
+ usb_put_dev(usb_dev);
+ return result;
+}
+
+
+static
+void i1480_usb_destroy(struct i1480_usb *i1480_usb)
+{
+ usb_kill_urb(i1480_usb->neep_urb);
+ usb_free_urb(i1480_usb->neep_urb);
+ usb_set_intfdata(i1480_usb->usb_iface, NULL);
+ usb_put_intf(i1480_usb->usb_iface);
+ usb_put_dev(i1480_usb->usb_dev);
+}
+
+
+/**
+ * Write a buffer to a memory address in the i1480 device
+ *
+ * @i1480: i1480 instance
+ * @memory_address:
+ * Address where to write the data buffer to.
+ * @buffer: Buffer to the data
+ * @size: Size of the buffer [has to be < 512].
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Data buffers to USB cannot be on the stack or in vmalloc'ed areas,
+ * so we copy it to the local i1480 buffer before proceeding. In any
+ * case, we have a max size we can send, soooo.
+ */
+static
+int i1480_usb_write(struct i1480 *i1480, u32 memory_address,
+ const void *buffer, size_t size)
+{
+ int result = 0;
+ struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+ size_t buffer_size, itr = 0;
+
+ d_fnstart(3, i1480->dev, "(%p, 0x%08x, %p, %zu)\n",
+ i1480, memory_address, buffer, size);
+ BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
+ while (size > 0) {
+ buffer_size = size < i1480->buf_size ? size : i1480->buf_size;
+ memcpy(i1480->cmd_buf, buffer + itr, buffer_size);
+ result = usb_control_msg(
+ i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
+ 0xf0, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ cpu_to_le16(memory_address & 0xffff),
+ cpu_to_le16((memory_address >> 16) & 0xffff),
+ i1480->cmd_buf, buffer_size, 100 /* FIXME: arbitrary */);
+ if (result < 0)
+ break;
+ d_printf(3, i1480->dev,
+ "wrote @ 0x%08x %u bytes (of %zu bytes requested)\n",
+ memory_address, result, buffer_size);
+ d_dump(4, i1480->dev, i1480->cmd_buf, result);
+ itr += result;
+ memory_address += result;
+ size -= result;
+ }
+ d_fnend(3, i1480->dev, "(%p, 0x%08x, %p, %zu) = %d\n",
+ i1480, memory_address, buffer, size, result);
+ return result;
+}
+
+
+/**
+ * Read a block [max size 512] of the device's memory to @i1480's buffer.
+ *
+ * @i1480: i1480 instance
+ * @memory_address:
+ * Address where to read from.
+ * @size: Size to read. Smaller than or equal to 512.
+ * @returns: >= 0 number of bytes written if ok, < 0 errno code on error.
+ *
+ * NOTE: if the memory address or block is incorrect, you might get a
+ * stall or a different memory read. Caller has to verify the
+ * memory address and size passed back in the @neh structure.
+ */
+static
+int i1480_usb_read(struct i1480 *i1480, u32 addr, size_t size)
+{
+ ssize_t result = 0, bytes = 0;
+ size_t itr, read_size = i1480->buf_size;
+ struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+
+ d_fnstart(3, i1480->dev, "(%p, 0x%08x, %zu)\n",
+ i1480, addr, size);
+ BUG_ON(size > i1480->buf_size);
+ BUG_ON(size & 0x3); /* Needs to be a multiple of 4 */
+ BUG_ON(read_size > 512);
+
+ if (addr >= 0x8000d200 && addr < 0x8000d400) /* Yeah, HW quirk */
+ read_size = 4;
+
+ for (itr = 0; itr < size; itr += read_size) {
+ size_t itr_addr = addr + itr;
+ size_t itr_size = min(read_size, size - itr);
+ result = usb_control_msg(
+ i1480_usb->usb_dev, usb_rcvctrlpipe(i1480_usb->usb_dev, 0),
+ 0xf0, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ cpu_to_le16(itr_addr & 0xffff),
+ cpu_to_le16((itr_addr >> 16) & 0xffff),
+ i1480->cmd_buf + itr, itr_size,
+ 100 /* FIXME: arbitrary */);
+ if (result < 0) {
+ dev_err(i1480->dev, "%s: USB read error: %zd\n",
+ __func__, result);
+ goto out;
+ }
+ if (result != itr_size) {
+ result = -EIO;
+ dev_err(i1480->dev,
+ "%s: partial read got only %zu bytes vs %zu expected\n",
+ __func__, result, itr_size);
+ goto out;
+ }
+ bytes += result;
+ }
+ result = bytes;
+out:
+ d_fnend(3, i1480->dev, "(%p, 0x%08x, %zu) = %zd\n",
+ i1480, addr, size, result);
+ if (result > 0)
+ d_dump(4, i1480->dev, i1480->cmd_buf, result);
+ return result;
+}
+
+
+/**
+ * Callback for reads on the notification/event endpoint
+ *
+ * Just enables the completion read handler.
+ */
+static
+void i1480_usb_neep_cb(struct urb *urb)
+{
+ struct i1480 *i1480 = urb->context;
+ struct device *dev = i1480->dev;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ECONNRESET: /* Not an error, but a controlled situation; */
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ dev_dbg(dev, "NEEP: reset/noent %d\n", urb->status);
+ break;
+ case -ESHUTDOWN: /* going away! */
+ dev_dbg(dev, "NEEP: down %d\n", urb->status);
+ break;
+ default:
+ dev_err(dev, "NEEP: unknown status %d\n", urb->status);
+ break;
+ }
+ i1480->evt_result = urb->actual_length;
+ complete(&i1480->evt_complete);
+ return;
+}
+
+
+/**
+ * Wait for the MAC FW to initialize
+ *
+ * MAC FW sends a 0xfd/0101/00 notification to EP1 when done
+ * initializing. Get that notification into i1480->evt_buf; upper layer
+ * will verify it.
+ *
+ * Set i1480->evt_result with the result of getting the event or its
+ * size (if succesful).
+ *
+ * Delivers the data directly to i1480->evt_buf
+ */
+static
+int i1480_usb_wait_init_done(struct i1480 *i1480)
+{
+ int result;
+ struct device *dev = i1480->dev;
+ struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+ struct usb_endpoint_descriptor *epd;
+
+ d_fnstart(3, dev, "(%p)\n", i1480);
+ init_completion(&i1480->evt_complete);
+ i1480->evt_result = -EINPROGRESS;
+ epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
+ usb_fill_int_urb(i1480_usb->neep_urb, i1480_usb->usb_dev,
+ usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
+ i1480->evt_buf, i1480->buf_size,
+ i1480_usb_neep_cb, i1480, epd->bInterval);
+ result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "init done: cannot submit NEEP read: %d\n",
+ result);
+ goto error_submit;
+ }
+ /* Wait for the USB callback to get the data */
+ result = wait_for_completion_interruptible_timeout(
+ &i1480->evt_complete, HZ);
+ if (result <= 0) {
+ result = result == 0 ? -ETIMEDOUT : result;
+ goto error_wait;
+ }
+ usb_kill_urb(i1480_usb->neep_urb);
+ d_fnend(3, dev, "(%p) = 0\n", i1480);
+ return 0;
+
+error_wait:
+ usb_kill_urb(i1480_usb->neep_urb);
+error_submit:
+ i1480->evt_result = result;
+ d_fnend(3, dev, "(%p) = %d\n", i1480, result);
+ return result;
+}
+
+
+/**
+ * Generic function for issuing commands to the i1480
+ *
+ * @i1480: i1480 instance
+ * @cmd_name: Name of the command (for error messages)
+ * @cmd: Pointer to command buffer
+ * @cmd_size: Size of the command buffer
+ * @reply: Buffer for the reply event
+ * @reply_size: Expected size back (including RCEB); the reply buffer
+ * is assumed to be as big as this.
+ * @returns: >= 0 size of the returned event data if ok,
+ * < 0 errno code on error.
+ *
+ * Arms the NE handle, issues the command to the device and checks the
+ * basics of the reply event.
+ */
+static
+int i1480_usb_cmd(struct i1480 *i1480, const char *cmd_name, size_t cmd_size)
+{
+ int result;
+ struct device *dev = i1480->dev;
+ struct i1480_usb *i1480_usb = container_of(i1480, struct i1480_usb, i1480);
+ struct usb_endpoint_descriptor *epd;
+ struct uwb_rccb *cmd = i1480->cmd_buf;
+ u8 iface_no;
+
+ d_fnstart(3, dev, "(%p, %s, %zu)\n", i1480, cmd_name, cmd_size);
+ /* Post a read on the notification & event endpoint */
+ iface_no = i1480_usb->usb_iface->cur_altsetting->desc.bInterfaceNumber;
+ epd = &i1480_usb->usb_iface->cur_altsetting->endpoint[0].desc;
+ usb_fill_int_urb(
+ i1480_usb->neep_urb, i1480_usb->usb_dev,
+ usb_rcvintpipe(i1480_usb->usb_dev, epd->bEndpointAddress),
+ i1480->evt_buf, i1480->buf_size,
+ i1480_usb_neep_cb, i1480, epd->bInterval);
+ result = usb_submit_urb(i1480_usb->neep_urb, GFP_KERNEL);
+ if (result < 0) {
+ dev_err(dev, "%s: cannot submit NEEP read: %d\n",
+ cmd_name, result);
+ goto error_submit_ep1;
+ }
+ /* Now post the command on EP0 */
+ result = usb_control_msg(
+ i1480_usb->usb_dev, usb_sndctrlpipe(i1480_usb->usb_dev, 0),
+ WA_EXEC_RC_CMD,
+ USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS,
+ 0, iface_no,
+ cmd, cmd_size,
+ 100 /* FIXME: this is totally arbitrary */);
+ if (result < 0) {
+ dev_err(dev, "%s: control request failed: %d\n",
+ cmd_name, result);
+ goto error_submit_ep0;
+ }
+ d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
+ i1480, cmd_name, cmd_size, result);
+ return result;
+
+error_submit_ep0:
+ usb_kill_urb(i1480_usb->neep_urb);
+error_submit_ep1:
+ d_fnend(3, dev, "(%p, %s, %zu) = %d\n",
+ i1480, cmd_name, cmd_size, result);
+ return result;
+}
+
+
+/*
+ * Probe a i1480 device for uploading firmware.
+ *
+ * We attach only to interface #0, which is the radio control interface.
+ */
+static
+int i1480_usb_probe(struct usb_interface *iface, const struct usb_device_id *id)
+{
+ struct i1480_usb *i1480_usb;
+ struct i1480 *i1480;
+ struct device *dev = &iface->dev;
+ int result;
+
+ result = -ENODEV;
+ if (iface->cur_altsetting->desc.bInterfaceNumber != 0) {
+ dev_dbg(dev, "not attaching to iface %d\n",
+ iface->cur_altsetting->desc.bInterfaceNumber);
+ goto error;
+ }
+ if (iface->num_altsetting > 1
+ && interface_to_usbdev(iface)->descriptor.idProduct == 0xbabe) {
+ /* Need altsetting #1 [HW QUIRK] or EP1 won't work */
+ result = usb_set_interface(interface_to_usbdev(iface), 0, 1);
+ if (result < 0)
+ dev_warn(dev,
+ "can't set altsetting 1 on iface 0: %d\n",
+ result);
+ }
+
+ result = -ENOMEM;
+ i1480_usb = kzalloc(sizeof(*i1480_usb), GFP_KERNEL);
+ if (i1480_usb == NULL) {
+ dev_err(dev, "Unable to allocate instance\n");
+ goto error;
+ }
+ i1480_usb_init(i1480_usb);
+
+ i1480 = &i1480_usb->i1480;
+ i1480->buf_size = 512;
+ i1480->cmd_buf = kmalloc(2 * i1480->buf_size, GFP_KERNEL);
+ if (i1480->cmd_buf == NULL) {
+ dev_err(dev, "Cannot allocate transfer buffers\n");
+ result = -ENOMEM;
+ goto error_buf_alloc;
+ }
+ i1480->evt_buf = i1480->cmd_buf + i1480->buf_size;
+
+ result = i1480_usb_create(i1480_usb, iface);
+ if (result < 0) {
+ dev_err(dev, "Cannot create instance: %d\n", result);
+ goto error_create;
+ }
+
+ /* setup the fops and upload the firmare */
+ i1480->pre_fw_name = "i1480-pre-phy-0.0.bin";
+ i1480->mac_fw_name = "i1480-usb-0.0.bin";
+ i1480->mac_fw_name_deprecate = "ptc-0.0.bin";
+ i1480->phy_fw_name = "i1480-phy-0.0.bin";
+ i1480->dev = &iface->dev;
+ i1480->write = i1480_usb_write;
+ i1480->read = i1480_usb_read;
+ i1480->rc_setup = NULL;
+ i1480->wait_init_done = i1480_usb_wait_init_done;
+ i1480->cmd = i1480_usb_cmd;
+
+ result = i1480_fw_upload(&i1480_usb->i1480); /* the real thing */
+ if (result >= 0) {
+ usb_reset_device(i1480_usb->usb_dev);
+ result = -ENODEV; /* we don't want to bind to the iface */
+ }
+ i1480_usb_destroy(i1480_usb);
+error_create:
+ kfree(i1480->cmd_buf);
+error_buf_alloc:
+ kfree(i1480_usb);
+error:
+ return result;
+}
+
+#define i1480_USB_DEV(v, p) \
+{ \
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE \
+ | USB_DEVICE_ID_MATCH_DEV_INFO \
+ | USB_DEVICE_ID_MATCH_INT_INFO, \
+ .idVendor = (v), \
+ .idProduct = (p), \
+ .bDeviceClass = 0xff, \
+ .bDeviceSubClass = 0xff, \
+ .bDeviceProtocol = 0xff, \
+ .bInterfaceClass = 0xff, \
+ .bInterfaceSubClass = 0xff, \
+ .bInterfaceProtocol = 0xff, \
+}
+
+
+/** USB device ID's that we handle */
+static struct usb_device_id i1480_usb_id_table[] = {
+ i1480_USB_DEV(0x8086, 0xdf3b),
+ i1480_USB_DEV(0x15a9, 0x0005),
+ i1480_USB_DEV(0x07d1, 0x3802),
+ i1480_USB_DEV(0x050d, 0x305a),
+ i1480_USB_DEV(0x3495, 0x3007),
+ {},
+};
+MODULE_DEVICE_TABLE(usb, i1480_usb_id_table);
+
+
+static struct usb_driver i1480_dfu_driver = {
+ .name = "i1480-dfu-usb",
+ .id_table = i1480_usb_id_table,
+ .probe = i1480_usb_probe,
+ .disconnect = NULL,
+};
+
+
+/*
+ * Initialize the i1480 DFU driver.
+ *
+ * We also need to register our function for guessing event sizes.
+ */
+static int __init i1480_dfu_driver_init(void)
+{
+ return usb_register(&i1480_dfu_driver);
+}
+module_init(i1480_dfu_driver_init);
+
+
+static void __exit i1480_dfu_driver_exit(void)
+{
+ usb_deregister(&i1480_dfu_driver);
+}
+module_exit(i1480_dfu_driver_exit);
+
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Intel Wireless UWB Link 1480 firmware uploader for USB");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Intel Wireless UWB Link 1480
+ * Event Size tables for Wired Adaptors
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/uwb.h>
+#include "dfu/i1480-dfu.h"
+
+
+/** Event size table for wEvents 0x00XX */
+static struct uwb_est_entry i1480_est_fd00[] = {
+ /* Anybody expecting this response has to use
+ * neh->extra_size to specify the real size that will
+ * come back. */
+ [i1480_EVT_CONFIRM] = { .size = sizeof(struct i1480_evt_confirm) },
+ [i1480_CMD_SET_IP_MAS] = { .size = sizeof(struct i1480_evt_confirm) },
+#ifdef i1480_RCEB_EXTENDED
+ [0x09] = {
+ .size = sizeof(struct i1480_rceb),
+ .offset = 1 + offsetof(struct i1480_rceb, wParamLength),
+ },
+#endif
+};
+
+/** Event size table for wEvents 0x01XX */
+static struct uwb_est_entry i1480_est_fd01[] = {
+ [0xff & i1480_EVT_RM_INIT_DONE] = { .size = sizeof(struct i1480_rceb) },
+ [0xff & i1480_EVT_DEV_ADD] = { .size = sizeof(struct i1480_rceb) + 9 },
+ [0xff & i1480_EVT_DEV_RM] = { .size = sizeof(struct i1480_rceb) + 9 },
+ [0xff & i1480_EVT_DEV_ID_CHANGE] = {
+ .size = sizeof(struct i1480_rceb) + 2 },
+};
+
+static int i1480_est_init(void)
+{
+ int result = uwb_est_register(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
+ i1480_est_fd00,
+ ARRAY_SIZE(i1480_est_fd00));
+ if (result < 0) {
+ printk(KERN_ERR "Can't register EST table fd00: %d\n", result);
+ return result;
+ }
+ result = uwb_est_register(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
+ i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
+ if (result < 0) {
+ printk(KERN_ERR "Can't register EST table fd01: %d\n", result);
+ return result;
+ }
+ return 0;
+}
+module_init(i1480_est_init);
+
+static void i1480_est_exit(void)
+{
+ uwb_est_unregister(i1480_CET_VS1, 0x00, 0x8086, 0x0c3b,
+ i1480_est_fd00, ARRAY_SIZE(i1480_est_fd00));
+ uwb_est_unregister(i1480_CET_VS1, 0x01, 0x8086, 0x0c3b,
+ i1480_est_fd01, ARRAY_SIZE(i1480_est_fd01));
+}
+module_exit(i1480_est_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("i1480's Vendor Specific Event Size Tables");
+MODULE_LICENSE("GPL");
+
+/**
+ * USB device ID's that we handle
+ *
+ * [so we are loaded when this kind device is connected]
+ */
+static struct usb_device_id i1480_est_id_table[] = {
+ { USB_DEVICE(0x8086, 0xdf3b), },
+ { USB_DEVICE(0x8086, 0x0c3b), },
+ { },
+};
+MODULE_DEVICE_TABLE(usb, i1480_est_id_table);
--- /dev/null
+/*
+ * Intel 1480 Wireless UWB Link
+ * WLP specific definitions
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#ifndef __i1480_wlp_h__
+#define __i1480_wlp_h__
+
+#include <linux/spinlock.h>
+#include <linux/list.h>
+#include <linux/uwb.h>
+#include <linux/if_ether.h>
+#include <asm/byteorder.h>
+
+/* New simplified header format? */
+#undef WLP_HDR_FMT_2 /* FIXME: rename */
+
+/**
+ * Values of the Delivery ID & Type field when PCA or DRP
+ *
+ * The Delivery ID & Type field in the WLP TX header indicates whether
+ * the frame is PCA or DRP. This is done based on the high level bit of
+ * this field.
+ * We use this constant to test if the traffic is PCA or DRP as follows:
+ * if (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)
+ * this is DRP traffic
+ * else
+ * this is PCA traffic
+ */
+enum deliver_id_type_bit {
+ WLP_DRP = 8,
+};
+
+/**
+ * WLP TX header
+ *
+ * Indicates UWB/WLP-specific transmission parameters for a network
+ * packet.
+ */
+struct wlp_tx_hdr {
+ /* dword 0 */
+ struct uwb_dev_addr dstaddr;
+ u8 key_index;
+ u8 mac_params;
+ /* dword 1 */
+ u8 phy_params;
+#ifndef WLP_HDR_FMT_2
+ u8 reserved;
+ __le16 oui01; /* FIXME: not so sure if __le16 or u8[2] */
+ /* dword 2 */
+ u8 oui2; /* if all LE, it could be merged */
+ __le16 prid;
+#endif
+} __attribute__((packed));
+
+static inline int wlp_tx_hdr_delivery_id_type(const struct wlp_tx_hdr *hdr)
+{
+ return hdr->mac_params & 0x0f;
+}
+
+static inline int wlp_tx_hdr_ack_policy(const struct wlp_tx_hdr *hdr)
+{
+ return (hdr->mac_params >> 4) & 0x07;
+}
+
+static inline int wlp_tx_hdr_rts_cts(const struct wlp_tx_hdr *hdr)
+{
+ return (hdr->mac_params >> 7) & 0x01;
+}
+
+static inline void wlp_tx_hdr_set_delivery_id_type(struct wlp_tx_hdr *hdr, int id)
+{
+ hdr->mac_params = (hdr->mac_params & ~0x0f) | id;
+}
+
+static inline void wlp_tx_hdr_set_ack_policy(struct wlp_tx_hdr *hdr,
+ enum uwb_ack_pol policy)
+{
+ hdr->mac_params = (hdr->mac_params & ~0x70) | (policy << 4);
+}
+
+static inline void wlp_tx_hdr_set_rts_cts(struct wlp_tx_hdr *hdr, int rts_cts)
+{
+ hdr->mac_params = (hdr->mac_params & ~0x80) | (rts_cts << 7);
+}
+
+static inline enum uwb_phy_rate wlp_tx_hdr_phy_rate(const struct wlp_tx_hdr *hdr)
+{
+ return hdr->phy_params & 0x0f;
+}
+
+static inline int wlp_tx_hdr_tx_power(const struct wlp_tx_hdr *hdr)
+{
+ return (hdr->phy_params >> 4) & 0x0f;
+}
+
+static inline void wlp_tx_hdr_set_phy_rate(struct wlp_tx_hdr *hdr, enum uwb_phy_rate rate)
+{
+ hdr->phy_params = (hdr->phy_params & ~0x0f) | rate;
+}
+
+static inline void wlp_tx_hdr_set_tx_power(struct wlp_tx_hdr *hdr, int pwr)
+{
+ hdr->phy_params = (hdr->phy_params & ~0xf0) | (pwr << 4);
+}
+
+
+/**
+ * WLP RX header
+ *
+ * Provides UWB/WLP-specific transmission data for a received
+ * network packet.
+ */
+struct wlp_rx_hdr {
+ /* dword 0 */
+ struct uwb_dev_addr dstaddr;
+ struct uwb_dev_addr srcaddr;
+ /* dword 1 */
+ u8 LQI;
+ s8 RSSI;
+ u8 reserved3;
+#ifndef WLP_HDR_FMT_2
+ u8 oui0;
+ /* dword 2 */
+ __le16 oui12;
+ __le16 prid;
+#endif
+} __attribute__((packed));
+
+
+/** User configurable options for WLP */
+struct wlp_options {
+ struct mutex mutex; /* access to user configurable options*/
+ struct wlp_tx_hdr def_tx_hdr; /* default tx hdr */
+ u8 pca_base_priority;
+ u8 bw_alloc; /*index into bw_allocs[] for PCA/DRP reservations*/
+};
+
+
+static inline
+void wlp_options_init(struct wlp_options *options)
+{
+ mutex_init(&options->mutex);
+ wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, UWB_ACK_INM);
+ wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, 1);
+ /* FIXME: default to phy caps */
+ wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, UWB_PHY_RATE_480);
+#ifndef WLP_HDR_FMT_2
+ options->def_tx_hdr.prid = cpu_to_le16(0x0000);
+#endif
+}
+
+
+/* sysfs helpers */
+
+extern ssize_t uwb_pca_base_priority_store(struct wlp_options *,
+ const char *, size_t);
+extern ssize_t uwb_pca_base_priority_show(const struct wlp_options *, char *);
+extern ssize_t uwb_bw_alloc_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_bw_alloc_show(const struct wlp_options *, char *);
+extern ssize_t uwb_ack_policy_store(struct wlp_options *,
+ const char *, size_t);
+extern ssize_t uwb_ack_policy_show(const struct wlp_options *, char *);
+extern ssize_t uwb_rts_cts_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_rts_cts_show(const struct wlp_options *, char *);
+extern ssize_t uwb_phy_rate_store(struct wlp_options *, const char *, size_t);
+extern ssize_t uwb_phy_rate_show(const struct wlp_options *, char *);
+
+
+/** Simple bandwidth allocation (temporary and too simple) */
+struct wlp_bw_allocs {
+ const char *name;
+ struct {
+ u8 mask, stream;
+ } tx, rx;
+};
+
+
+#endif /* #ifndef __i1480_wlp_h__ */
--- /dev/null
+obj-$(CONFIG_UWB_I1480U_WLP) += i1480u-wlp.o
+
+i1480u-wlp-objs := \
+ lc.o \
+ netdev.o \
+ rx.o \
+ sysfs.o \
+ tx.o
--- /dev/null
+/*
+ * Intel 1480 Wireless UWB Link USB
+ * Header formats, constants, general internal interfaces
+ *
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This is not an standard interface.
+ *
+ * FIXME: docs
+ *
+ * i1480u-wlp is pretty simple: two endpoints, one for tx, one for
+ * rx. rx is polled. Network packets (ethernet, whatever) are wrapped
+ * in i1480 TX or RX headers (for sending over the air), and these
+ * packets are wrapped in UNTD headers (for sending to the WLP UWB
+ * controller).
+ *
+ * UNTD packets (UNTD hdr + i1480 hdr + network packet) packets
+ * cannot be bigger than i1480u_MAX_FRG_SIZE. When this happens, the
+ * i1480 packet is broken in chunks/packets:
+ *
+ * UNTD-1st.hdr + i1480.hdr + payload
+ * UNTD-next.hdr + payload
+ * ...
+ * UNTD-last.hdr + payload
+ *
+ * so that each packet is smaller or equal than i1480u_MAX_FRG_SIZE.
+ *
+ * All HW structures and bitmaps are little endian, so we need to play
+ * ugly tricks when defining bitfields. Hoping for the day GCC
+ * implements __attribute__((endian(1234))).
+ *
+ * FIXME: ROADMAP to the whole implementation
+ */
+
+#ifndef __i1480u_wlp_h__
+#define __i1480u_wlp_h__
+
+#include <linux/usb.h>
+#include <linux/netdevice.h>
+#include <linux/uwb.h> /* struct uwb_rc, struct uwb_notifs_handler */
+#include <linux/wlp.h>
+#include "../i1480-wlp.h"
+
+#undef i1480u_FLOW_CONTROL /* Enable flow control code */
+
+/**
+ * Basic flow control
+ */
+enum {
+ i1480u_TX_INFLIGHT_MAX = 1000,
+ i1480u_TX_INFLIGHT_THRESHOLD = 100,
+};
+
+/** Maximum size of a transaction that we can tx/rx */
+enum {
+ /* Maximum packet size computed as follows: max UNTD header (8) +
+ * i1480 RX header (8) + max Ethernet header and payload (4096) +
+ * Padding added by skb_reserve (2) to make post Ethernet payload
+ * start on 16 byte boundary*/
+ i1480u_MAX_RX_PKT_SIZE = 4114,
+ i1480u_MAX_FRG_SIZE = 512,
+ i1480u_RX_BUFS = 9,
+};
+
+
+/**
+ * UNTD packet type
+ *
+ * We need to fragment any payload whose UNTD packet is going to be
+ * bigger than i1480u_MAX_FRG_SIZE.
+ */
+enum i1480u_pkt_type {
+ i1480u_PKT_FRAG_1ST = 0x1,
+ i1480u_PKT_FRAG_NXT = 0x0,
+ i1480u_PKT_FRAG_LST = 0x2,
+ i1480u_PKT_FRAG_CMP = 0x3
+};
+enum {
+ i1480u_PKT_NONE = 0x4,
+};
+
+/** USB Network Transfer Descriptor - common */
+struct untd_hdr {
+ u8 type;
+ __le16 len;
+} __attribute__((packed));
+
+static inline enum i1480u_pkt_type untd_hdr_type(const struct untd_hdr *hdr)
+{
+ return hdr->type & 0x03;
+}
+
+static inline int untd_hdr_rx_tx(const struct untd_hdr *hdr)
+{
+ return (hdr->type >> 2) & 0x01;
+}
+
+static inline void untd_hdr_set_type(struct untd_hdr *hdr, enum i1480u_pkt_type type)
+{
+ hdr->type = (hdr->type & ~0x03) | type;
+}
+
+static inline void untd_hdr_set_rx_tx(struct untd_hdr *hdr, int rx_tx)
+{
+ hdr->type = (hdr->type & ~0x04) | (rx_tx << 2);
+}
+
+
+/**
+ * USB Network Transfer Descriptor - Complete Packet
+ *
+ * This is for a packet that is smaller (header + payload) than
+ * i1480u_MAX_FRG_SIZE.
+ *
+ * @hdr.total_len is the size of the payload; the payload doesn't
+ * count this header nor the padding, but includes the size of i1480
+ * header.
+ */
+struct untd_hdr_cmp {
+ struct untd_hdr hdr;
+ u8 padding;
+} __attribute__((packed));
+
+
+/**
+ * USB Network Transfer Descriptor - First fragment
+ *
+ * @hdr.len is the size of the *whole packet* (excluding UNTD
+ * headers); @fragment_len is the size of the payload (excluding UNTD
+ * headers, but including i1480 headers).
+ */
+struct untd_hdr_1st {
+ struct untd_hdr hdr;
+ __le16 fragment_len;
+ u8 padding[3];
+} __attribute__((packed));
+
+
+/**
+ * USB Network Transfer Descriptor - Next / Last [Rest]
+ *
+ * @hdr.len is the size of the payload, not including headrs.
+ */
+struct untd_hdr_rst {
+ struct untd_hdr hdr;
+ u8 padding;
+} __attribute__((packed));
+
+
+/**
+ * Transmission context
+ *
+ * Wraps all the stuff needed to track a pending/active tx
+ * operation.
+ */
+struct i1480u_tx {
+ struct list_head list_node;
+ struct i1480u *i1480u;
+ struct urb *urb;
+
+ struct sk_buff *skb;
+ struct wlp_tx_hdr *wlp_tx_hdr;
+
+ void *buf; /* if NULL, no new buf was used */
+ size_t buf_size;
+};
+
+/**
+ * Basic flow control
+ *
+ * We maintain a basic flow control counter. "count" how many TX URBs are
+ * outstanding. Only allow "max"
+ * TX URBs to be outstanding. If this value is reached the queue will be
+ * stopped. The queue will be restarted when there are
+ * "threshold" URBs outstanding.
+ * Maintain a counter of how many time the TX queue needed to be restarted
+ * due to the "max" being exceeded and the "threshold" reached again. The
+ * timestamp "restart_ts" is to keep track from when the counter was last
+ * queried (see sysfs handling of file wlp_tx_inflight).
+ */
+struct i1480u_tx_inflight {
+ atomic_t count;
+ unsigned long max;
+ unsigned long threshold;
+ unsigned long restart_ts;
+ atomic_t restart_count;
+};
+
+/**
+ * Instance of a i1480u WLP interface
+ *
+ * Keeps references to the USB device that wraps it, as well as it's
+ * interface and associated UWB host controller. As well, it also
+ * keeps a link to the netdevice for integration into the networking
+ * stack.
+ * We maintian separate error history for the tx and rx endpoints because
+ * the implementation does not rely on locking - having one shared
+ * structure between endpoints may cause problems. Adding locking to the
+ * implementation will have higher cost than adding a separate structure.
+ */
+struct i1480u {
+ struct usb_device *usb_dev;
+ struct usb_interface *usb_iface;
+ struct net_device *net_dev;
+
+ spinlock_t lock;
+ struct net_device_stats stats;
+
+ /* RX context handling */
+ struct sk_buff *rx_skb;
+ struct uwb_dev_addr rx_srcaddr;
+ size_t rx_untd_pkt_size;
+ struct i1480u_rx_buf {
+ struct i1480u *i1480u; /* back pointer */
+ struct urb *urb;
+ struct sk_buff *data; /* i1480u_MAX_RX_PKT_SIZE each */
+ } rx_buf[i1480u_RX_BUFS]; /* N bufs */
+
+ spinlock_t tx_list_lock; /* TX context */
+ struct list_head tx_list;
+ u8 tx_stream;
+
+ struct stats lqe_stats, rssi_stats; /* radio statistics */
+
+ /* Options we can set from sysfs */
+ struct wlp_options options;
+ struct uwb_notifs_handler uwb_notifs_handler;
+ struct edc tx_errors;
+ struct edc rx_errors;
+ struct wlp wlp;
+#ifdef i1480u_FLOW_CONTROL
+ struct urb *notif_urb;
+ struct edc notif_edc; /* error density counter */
+ u8 notif_buffer[1];
+#endif
+ struct i1480u_tx_inflight tx_inflight;
+};
+
+/* Internal interfaces */
+extern void i1480u_rx_cb(struct urb *urb);
+extern int i1480u_rx_setup(struct i1480u *);
+extern void i1480u_rx_release(struct i1480u *);
+extern void i1480u_tx_release(struct i1480u *);
+extern int i1480u_xmit_frame(struct wlp *, struct sk_buff *,
+ struct uwb_dev_addr *);
+extern void i1480u_stop_queue(struct wlp *);
+extern void i1480u_start_queue(struct wlp *);
+extern int i1480u_sysfs_setup(struct i1480u *);
+extern void i1480u_sysfs_release(struct i1480u *);
+
+/* netdev interface */
+extern int i1480u_open(struct net_device *);
+extern int i1480u_stop(struct net_device *);
+extern int i1480u_hard_start_xmit(struct sk_buff *, struct net_device *);
+extern void i1480u_tx_timeout(struct net_device *);
+extern int i1480u_set_config(struct net_device *, struct ifmap *);
+extern struct net_device_stats *i1480u_get_stats(struct net_device *);
+extern int i1480u_change_mtu(struct net_device *, int);
+extern void i1480u_uwb_notifs_cb(void *, struct uwb_dev *, enum uwb_notifs);
+
+/* bandwidth allocation callback */
+extern void i1480u_bw_alloc_cb(struct uwb_rsv *);
+
+/* Sys FS */
+extern struct attribute_group i1480u_wlp_attr_group;
+
+#endif /* #ifndef __i1480u_wlp_h__ */
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * This implements a very simple network driver for the WLP USB
+ * device that is associated to a UWB (Ultra Wide Band) host.
+ *
+ * This is seen as an interface of a composite device. Once the UWB
+ * host has an association to another WLP capable device, the
+ * networking interface (aka WLP) can start to send packets back and
+ * forth.
+ *
+ * Limitations:
+ *
+ * - Hand cranked; can't ifup the interface until there is an association
+ *
+ * - BW allocation very simplistic [see i1480u_mas_set() and callees].
+ *
+ *
+ * ROADMAP:
+ *
+ * ENTRY POINTS (driver model):
+ *
+ * i1480u_driver_{exit,init}(): initialization of the driver.
+ *
+ * i1480u_probe(): called by the driver code when a device
+ * matching 'i1480u_id_table' is connected.
+ *
+ * This allocs a netdev instance, inits with
+ * i1480u_add(), then registers_netdev().
+ * i1480u_init()
+ * i1480u_add()
+ *
+ * i1480u_disconnect(): device has been disconnected/module
+ * is being removed.
+ * i1480u_rm()
+ */
+#include <linux/version.h>
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "i1480u-wlp.h"
+
+
+
+static inline
+void i1480u_init(struct i1480u *i1480u)
+{
+ /* nothing so far... doesn't it suck? */
+ spin_lock_init(&i1480u->lock);
+ INIT_LIST_HEAD(&i1480u->tx_list);
+ spin_lock_init(&i1480u->tx_list_lock);
+ wlp_options_init(&i1480u->options);
+ edc_init(&i1480u->tx_errors);
+ edc_init(&i1480u->rx_errors);
+#ifdef i1480u_FLOW_CONTROL
+ edc_init(&i1480u->notif_edc);
+#endif
+ stats_init(&i1480u->lqe_stats);
+ stats_init(&i1480u->rssi_stats);
+ wlp_init(&i1480u->wlp);
+}
+
+/**
+ * Fill WLP device information structure
+ *
+ * The structure will contain a few character arrays, each ending with a
+ * null terminated string. Each string has to fit (excluding terminating
+ * character) into a specified range obtained from the WLP substack.
+ *
+ * It is still not clear exactly how this device information should be
+ * obtained. Until we find out we use the USB device descriptor as backup, some
+ * information elements have intuitive mappings, other not.
+ */
+static
+void i1480u_fill_device_info(struct wlp *wlp, struct wlp_device_info *dev_info)
+{
+ struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+ struct usb_device *usb_dev = i1480u->usb_dev;
+ /* Treat device name and model name the same */
+ if (usb_dev->descriptor.iProduct) {
+ usb_string(usb_dev, usb_dev->descriptor.iProduct,
+ dev_info->name, sizeof(dev_info->name));
+ usb_string(usb_dev, usb_dev->descriptor.iProduct,
+ dev_info->model_name, sizeof(dev_info->model_name));
+ }
+ if (usb_dev->descriptor.iManufacturer)
+ usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
+ dev_info->manufacturer,
+ sizeof(dev_info->manufacturer));
+ scnprintf(dev_info->model_nr, sizeof(dev_info->model_nr), "%04x",
+ __le16_to_cpu(usb_dev->descriptor.bcdDevice));
+ if (usb_dev->descriptor.iSerialNumber)
+ usb_string(usb_dev, usb_dev->descriptor.iSerialNumber,
+ dev_info->serial, sizeof(dev_info->serial));
+ /* FIXME: where should we obtain category? */
+ dev_info->prim_dev_type.category = cpu_to_le16(WLP_DEV_CAT_OTHER);
+ /* FIXME: Complete OUI and OUIsubdiv attributes */
+}
+
+#ifdef i1480u_FLOW_CONTROL
+/**
+ * Callback for the notification endpoint
+ *
+ * This mostly controls the xon/xoff protocol. In case of hard error,
+ * we stop the queue. If not, we always retry.
+ */
+static
+void i1480u_notif_cb(struct urb *urb, struct pt_regs *regs)
+{
+ struct i1480u *i1480u = urb->context;
+ struct usb_interface *usb_iface = i1480u->usb_iface;
+ struct device *dev = &usb_iface->dev;
+ int result;
+
+ switch (urb->status) {
+ case 0: /* Got valid data, do xon/xoff */
+ switch (i1480u->notif_buffer[0]) {
+ case 'N':
+ dev_err(dev, "XOFF STOPPING queue at %lu\n", jiffies);
+ netif_stop_queue(i1480u->net_dev);
+ break;
+ case 'A':
+ dev_err(dev, "XON STARTING queue at %lu\n", jiffies);
+ netif_start_queue(i1480u->net_dev);
+ break;
+ default:
+ dev_err(dev, "NEP: unknown data 0x%02hhx\n",
+ i1480u->notif_buffer[0]);
+ }
+ break;
+ case -ECONNRESET: /* Controlled situation ... */
+ case -ENOENT: /* we killed the URB... */
+ dev_err(dev, "NEP: URB reset/noent %d\n", urb->status);
+ goto error;
+ case -ESHUTDOWN: /* going away! */
+ dev_err(dev, "NEP: URB down %d\n", urb->status);
+ goto error;
+ default: /* Retry unless it gets ugly */
+ if (edc_inc(&i1480u->notif_edc, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "NEP: URB max acceptable errors "
+ "exceeded; resetting device\n");
+ goto error_reset;
+ }
+ dev_err(dev, "NEP: URB error %d\n", urb->status);
+ break;
+ }
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result < 0) {
+ dev_err(dev, "NEP: Can't resubmit URB: %d; resetting device\n",
+ result);
+ goto error_reset;
+ }
+ return;
+
+error_reset:
+ wlp_reset_all(&i1480-wlp);
+error:
+ netif_stop_queue(i1480u->net_dev);
+ return;
+}
+#endif
+
+static
+int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface)
+{
+ int result = -ENODEV;
+ struct wlp *wlp = &i1480u->wlp;
+ struct usb_device *usb_dev = interface_to_usbdev(iface);
+ struct net_device *net_dev = i1480u->net_dev;
+ struct uwb_rc *rc;
+ struct uwb_dev *uwb_dev;
+#ifdef i1480u_FLOW_CONTROL
+ struct usb_endpoint_descriptor *epd;
+#endif
+
+ i1480u->usb_dev = usb_get_dev(usb_dev);
+ i1480u->usb_iface = iface;
+ rc = uwb_rc_get_by_grandpa(&i1480u->usb_dev->dev);
+ if (rc == NULL) {
+ dev_err(&iface->dev, "Cannot get associated UWB Radio "
+ "Controller\n");
+ goto out;
+ }
+ wlp->xmit_frame = i1480u_xmit_frame;
+ wlp->fill_device_info = i1480u_fill_device_info;
+ wlp->stop_queue = i1480u_stop_queue;
+ wlp->start_queue = i1480u_start_queue;
+ result = wlp_setup(wlp, rc);
+ if (result < 0) {
+ dev_err(&iface->dev, "Cannot setup WLP\n");
+ goto error_wlp_setup;
+ }
+ result = 0;
+ ether_setup(net_dev); /* make it an etherdevice */
+ uwb_dev = &rc->uwb_dev;
+ /* FIXME: hookup address change notifications? */
+
+ memcpy(net_dev->dev_addr, uwb_dev->mac_addr.data,
+ sizeof(net_dev->dev_addr));
+
+ net_dev->hard_header_len = sizeof(struct untd_hdr_cmp)
+ + sizeof(struct wlp_tx_hdr)
+ + WLP_DATA_HLEN
+ + ETH_HLEN;
+ net_dev->mtu = 3500;
+ net_dev->tx_queue_len = 20; /* FIXME: maybe use 1000? */
+
+/* net_dev->flags &= ~IFF_BROADCAST; FIXME: BUG in firmware */
+ /* FIXME: multicast disabled */
+ net_dev->flags &= ~IFF_MULTICAST;
+ net_dev->features &= ~NETIF_F_SG;
+ net_dev->features &= ~NETIF_F_FRAGLIST;
+ /* All NETIF_F_*_CSUM disabled */
+ net_dev->features |= NETIF_F_HIGHDMA;
+ net_dev->watchdog_timeo = 5*HZ; /* FIXME: a better default? */
+
+ net_dev->open = i1480u_open;
+ net_dev->stop = i1480u_stop;
+ net_dev->hard_start_xmit = i1480u_hard_start_xmit;
+ net_dev->tx_timeout = i1480u_tx_timeout;
+ net_dev->get_stats = i1480u_get_stats;
+ net_dev->set_config = i1480u_set_config;
+ net_dev->change_mtu = i1480u_change_mtu;
+
+#ifdef i1480u_FLOW_CONTROL
+ /* Notification endpoint setup (submitted when we open the device) */
+ i1480u->notif_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (i1480u->notif_urb == NULL) {
+ dev_err(&iface->dev, "Unable to allocate notification URB\n");
+ result = -ENOMEM;
+ goto error_urb_alloc;
+ }
+ epd = &iface->cur_altsetting->endpoint[0].desc;
+ usb_fill_int_urb(i1480u->notif_urb, usb_dev,
+ usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
+ i1480u->notif_buffer, sizeof(i1480u->notif_buffer),
+ i1480u_notif_cb, i1480u, epd->bInterval);
+
+#endif
+
+ i1480u->tx_inflight.max = i1480u_TX_INFLIGHT_MAX;
+ i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
+ i1480u->tx_inflight.restart_ts = jiffies;
+ usb_set_intfdata(iface, i1480u);
+ return result;
+
+#ifdef i1480u_FLOW_CONTROL
+error_urb_alloc:
+#endif
+ wlp_remove(wlp);
+error_wlp_setup:
+ uwb_rc_put(rc);
+out:
+ usb_put_dev(i1480u->usb_dev);
+ return result;
+}
+
+static void i1480u_rm(struct i1480u *i1480u)
+{
+ struct uwb_rc *rc = i1480u->wlp.rc;
+ usb_set_intfdata(i1480u->usb_iface, NULL);
+#ifdef i1480u_FLOW_CONTROL
+ usb_kill_urb(i1480u->notif_urb);
+ usb_free_urb(i1480u->notif_urb);
+#endif
+ wlp_remove(&i1480u->wlp);
+ uwb_rc_put(rc);
+ usb_put_dev(i1480u->usb_dev);
+}
+
+/** Just setup @net_dev's i1480u private data */
+static void i1480u_netdev_setup(struct net_device *net_dev)
+{
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ /* Initialize @i1480u */
+ memset(i1480u, 0, sizeof(*i1480u));
+ i1480u_init(i1480u);
+}
+
+/**
+ * Probe a i1480u interface and register it
+ *
+ * @iface: USB interface to link to
+ * @id: USB class/subclass/protocol id
+ * @returns: 0 if ok, < 0 errno code on error.
+ *
+ * Does basic housekeeping stuff and then allocs a netdev with space
+ * for the i1480u data. Initializes, registers in i1480u, registers in
+ * netdev, ready to go.
+ */
+static int i1480u_probe(struct usb_interface *iface,
+ const struct usb_device_id *id)
+{
+ int result;
+ struct net_device *net_dev;
+ struct device *dev = &iface->dev;
+ struct i1480u *i1480u;
+
+ /* Allocate instance [calls i1480u_netdev_setup() on it] */
+ result = -ENOMEM;
+ net_dev = alloc_netdev(sizeof(*i1480u), "wlp%d", i1480u_netdev_setup);
+ if (net_dev == NULL) {
+ dev_err(dev, "no memory for network device instance\n");
+ goto error_alloc_netdev;
+ }
+ SET_NETDEV_DEV(net_dev, dev);
+ i1480u = netdev_priv(net_dev);
+ i1480u->net_dev = net_dev;
+ result = i1480u_add(i1480u, iface); /* Now setup all the wlp stuff */
+ if (result < 0) {
+ dev_err(dev, "cannot add i1480u device: %d\n", result);
+ goto error_i1480u_add;
+ }
+ result = register_netdev(net_dev); /* Okey dokey, bring it up */
+ if (result < 0) {
+ dev_err(dev, "cannot register network device: %d\n", result);
+ goto error_register_netdev;
+ }
+ i1480u_sysfs_setup(i1480u);
+ if (result < 0)
+ goto error_sysfs_init;
+ return 0;
+
+error_sysfs_init:
+ unregister_netdev(net_dev);
+error_register_netdev:
+ i1480u_rm(i1480u);
+error_i1480u_add:
+ free_netdev(net_dev);
+error_alloc_netdev:
+ return result;
+}
+
+
+/**
+ * Disconect a i1480u from the system.
+ *
+ * i1480u_stop() has been called before, so al the rx and tx contexts
+ * have been taken down already. Make sure the queue is stopped,
+ * unregister netdev and i1480u, free and kill.
+ */
+static void i1480u_disconnect(struct usb_interface *iface)
+{
+ struct i1480u *i1480u;
+ struct net_device *net_dev;
+
+ i1480u = usb_get_intfdata(iface);
+ net_dev = i1480u->net_dev;
+ netif_stop_queue(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+ usb_kill_urb(i1480u->notif_urb);
+#endif
+ i1480u_sysfs_release(i1480u);
+ unregister_netdev(net_dev);
+ i1480u_rm(i1480u);
+ free_netdev(net_dev);
+}
+
+static struct usb_device_id i1480u_id_table[] = {
+ {
+ .match_flags = USB_DEVICE_ID_MATCH_DEVICE \
+ | USB_DEVICE_ID_MATCH_DEV_INFO \
+ | USB_DEVICE_ID_MATCH_INT_INFO,
+ .idVendor = 0x8086,
+ .idProduct = 0x0c3b,
+ .bDeviceClass = 0xef,
+ .bDeviceSubClass = 0x02,
+ .bDeviceProtocol = 0x02,
+ .bInterfaceClass = 0xff,
+ .bInterfaceSubClass = 0xff,
+ .bInterfaceProtocol = 0xff,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(usb, i1480u_id_table);
+
+static struct usb_driver i1480u_driver = {
+ .name = KBUILD_MODNAME,
+ .probe = i1480u_probe,
+ .disconnect = i1480u_disconnect,
+ .id_table = i1480u_id_table,
+};
+
+static int __init i1480u_driver_init(void)
+{
+ return usb_register(&i1480u_driver);
+}
+module_init(i1480u_driver_init);
+
+
+static void __exit i1480u_driver_exit(void)
+{
+ usb_deregister(&i1480u_driver);
+}
+module_exit(i1480u_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("i1480 Wireless UWB Link WLP networking for USB");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * Implementation of the netdevice linkage (except tx and rx related stuff).
+ *
+ * ROADMAP:
+ *
+ * ENTRY POINTS (Net device):
+ *
+ * i1480u_open(): Called when we ifconfig up the interface;
+ * associates to a UWB host controller, reserves
+ * bandwidth (MAS), sets up RX USB URB and starts
+ * the queue.
+ *
+ * i1480u_stop(): Called when we ifconfig down a interface;
+ * reverses _open().
+ *
+ * i1480u_set_config():
+ */
+
+#include <linux/if_arp.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include "i1480u-wlp.h"
+
+struct i1480u_cmd_set_ip_mas {
+ struct uwb_rccb rccb;
+ struct uwb_dev_addr addr;
+ u8 stream;
+ u8 owner;
+ u8 type; /* enum uwb_drp_type */
+ u8 baMAS[32];
+} __attribute__((packed));
+
+
+static
+int i1480u_set_ip_mas(
+ struct uwb_rc *rc,
+ const struct uwb_dev_addr *dstaddr,
+ u8 stream, u8 owner, u8 type, unsigned long *mas)
+{
+
+ int result;
+ struct i1480u_cmd_set_ip_mas *cmd;
+ struct uwb_rc_evt_confirm reply;
+
+ result = -ENOMEM;
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ goto error_kzalloc;
+ cmd->rccb.bCommandType = 0xfd;
+ cmd->rccb.wCommand = cpu_to_le16(0x000e);
+ cmd->addr = *dstaddr;
+ cmd->stream = stream;
+ cmd->owner = owner;
+ cmd->type = type;
+ if (mas == NULL)
+ memset(cmd->baMAS, 0x00, sizeof(cmd->baMAS));
+ else
+ memcpy(cmd->baMAS, mas, sizeof(cmd->baMAS));
+ reply.rceb.bEventType = 0xfd;
+ reply.rceb.wEvent = cpu_to_le16(0x000e);
+ result = uwb_rc_cmd(rc, "SET-IP-MAS", &cmd->rccb, sizeof(*cmd),
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ if (reply.bResultCode != UWB_RC_RES_FAIL) {
+ dev_err(&rc->uwb_dev.dev,
+ "SET-IP-MAS: command execution failed: %d\n",
+ reply.bResultCode);
+ result = -EIO;
+ }
+error_cmd:
+ kfree(cmd);
+error_kzalloc:
+ return result;
+}
+
+/*
+ * Inform a WLP interface of a MAS reservation
+ *
+ * @rc is assumed refcnted.
+ */
+/* FIXME: detect if remote device is WLP capable? */
+static int i1480u_mas_set_dev(struct uwb_dev *uwb_dev, struct uwb_rc *rc,
+ u8 stream, u8 owner, u8 type, unsigned long *mas)
+{
+ int result = 0;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ result = i1480u_set_ip_mas(rc, &uwb_dev->dev_addr, stream, owner,
+ type, mas);
+ if (result < 0) {
+ char rcaddrbuf[UWB_ADDR_STRSIZE], devaddrbuf[UWB_ADDR_STRSIZE];
+ uwb_dev_addr_print(rcaddrbuf, sizeof(rcaddrbuf),
+ &rc->uwb_dev.dev_addr);
+ uwb_dev_addr_print(devaddrbuf, sizeof(devaddrbuf),
+ &uwb_dev->dev_addr);
+ dev_err(dev, "Set IP MAS (%s to %s) failed: %d\n",
+ rcaddrbuf, devaddrbuf, result);
+ }
+ return result;
+}
+
+/**
+ * Called by bandwidth allocator when change occurs in reservation.
+ *
+ * @rsv: The reservation that is being established, modified, or
+ * terminated.
+ *
+ * When a reservation is established, modified, or terminated the upper layer
+ * (WLP here) needs set/update the currently available Media Access Slots
+ * that can be use for IP traffic.
+ *
+ * Our action taken during failure depends on how the reservation is being
+ * changed:
+ * - if reservation is being established we do nothing if we cannot set the
+ * new MAS to be used
+ * - if reservation is being terminated we revert back to PCA whether the
+ * SET IP MAS command succeeds or not.
+ */
+void i1480u_bw_alloc_cb(struct uwb_rsv *rsv)
+{
+ int result = 0;
+ struct i1480u *i1480u = rsv->pal_priv;
+ struct device *dev = &i1480u->usb_iface->dev;
+ struct uwb_dev *target_dev = rsv->target.dev;
+ struct uwb_rc *rc = i1480u->wlp.rc;
+ u8 stream = rsv->stream;
+ int type = rsv->type;
+ int is_owner = rsv->owner == &rc->uwb_dev;
+ unsigned long *bmp = rsv->mas.bm;
+
+ dev_err(dev, "WLP callback called - sending set ip mas\n");
+ /*user cannot change options while setting configuration*/
+ mutex_lock(&i1480u->options.mutex);
+ switch (rsv->state) {
+ case UWB_RSV_STATE_T_ACCEPTED:
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
+ type, bmp);
+ if (result < 0) {
+ dev_err(dev, "MAS reservation failed: %d\n", result);
+ goto out;
+ }
+ if (is_owner) {
+ wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
+ WLP_DRP | stream);
+ wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 0);
+ }
+ break;
+ case UWB_RSV_STATE_NONE:
+ /* revert back to PCA */
+ result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
+ type, bmp);
+ if (result < 0)
+ dev_err(dev, "MAS reservation failed: %d\n", result);
+ /* Revert to PCA even though SET IP MAS failed. */
+ wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
+ i1480u->options.pca_base_priority);
+ wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 1);
+ break;
+ default:
+ dev_err(dev, "unexpected WLP reservation state: %s (%d).\n",
+ uwb_rsv_state_str(rsv->state), rsv->state);
+ break;
+ }
+out:
+ mutex_unlock(&i1480u->options.mutex);
+ return;
+}
+
+/**
+ *
+ * Called on 'ifconfig up'
+ */
+int i1480u_open(struct net_device *net_dev)
+{
+ int result;
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ struct wlp *wlp = &i1480u->wlp;
+ struct uwb_rc *rc;
+ struct device *dev = &i1480u->usb_iface->dev;
+
+ rc = wlp->rc;
+ result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */
+ if (result < 0)
+ goto error_rx_setup;
+ netif_wake_queue(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+ result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);;
+ if (result < 0) {
+ dev_err(dev, "Can't submit notification URB: %d\n", result);
+ goto error_notif_urb_submit;
+ }
+#endif
+ i1480u->uwb_notifs_handler.cb = i1480u_uwb_notifs_cb;
+ i1480u->uwb_notifs_handler.data = i1480u;
+ if (uwb_bg_joined(rc))
+ netif_carrier_on(net_dev);
+ else
+ netif_carrier_off(net_dev);
+ uwb_notifs_register(rc, &i1480u->uwb_notifs_handler);
+ /* Interface is up with an address, now we can create WSS */
+ result = wlp_wss_setup(net_dev, &wlp->wss);
+ if (result < 0) {
+ dev_err(dev, "Can't create WSS: %d. \n", result);
+ goto error_notif_deregister;
+ }
+ return 0;
+error_notif_deregister:
+ uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
+#ifdef i1480u_FLOW_CONTROL
+error_notif_urb_submit:
+#endif
+ netif_stop_queue(net_dev);
+ i1480u_rx_release(i1480u);
+error_rx_setup:
+ return result;
+}
+
+
+/**
+ * Called on 'ifconfig down'
+ */
+int i1480u_stop(struct net_device *net_dev)
+{
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ struct wlp *wlp = &i1480u->wlp;
+ struct uwb_rc *rc = wlp->rc;
+
+ BUG_ON(wlp->rc == NULL);
+ wlp_wss_remove(&wlp->wss);
+ uwb_notifs_deregister(rc, &i1480u->uwb_notifs_handler);
+ netif_carrier_off(net_dev);
+#ifdef i1480u_FLOW_CONTROL
+ usb_kill_urb(i1480u->notif_urb);
+#endif
+ netif_stop_queue(net_dev);
+ i1480u_rx_release(i1480u);
+ i1480u_tx_release(i1480u);
+ return 0;
+}
+
+
+/** Report statistics */
+struct net_device_stats *i1480u_get_stats(struct net_device *net_dev)
+{
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ return &i1480u->stats;
+}
+
+
+/**
+ *
+ * Change the interface config--we probably don't have to do anything.
+ */
+int i1480u_set_config(struct net_device *net_dev, struct ifmap *map)
+{
+ int result;
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ BUG_ON(i1480u->wlp.rc == NULL);
+ result = 0;
+ return result;
+}
+
+/**
+ * Change the MTU of the interface
+ */
+int i1480u_change_mtu(struct net_device *net_dev, int mtu)
+{
+ static union {
+ struct wlp_tx_hdr tx;
+ struct wlp_rx_hdr rx;
+ } i1480u_all_hdrs;
+
+ if (mtu < ETH_HLEN) /* We encap eth frames */
+ return -ERANGE;
+ if (mtu > 4000 - sizeof(i1480u_all_hdrs))
+ return -ERANGE;
+ net_dev->mtu = mtu;
+ return 0;
+}
+
+
+/**
+ * Callback function to handle events from UWB
+ * When we see other devices we know the carrier is ok,
+ * if we are the only device in the beacon group we set the carrier
+ * state to off.
+ * */
+void i1480u_uwb_notifs_cb(void *data, struct uwb_dev *uwb_dev,
+ enum uwb_notifs event)
+{
+ struct i1480u *i1480u = data;
+ struct net_device *net_dev = i1480u->net_dev;
+ struct device *dev = &i1480u->usb_iface->dev;
+ switch (event) {
+ case UWB_NOTIF_BG_JOIN:
+ netif_carrier_on(net_dev);
+ dev_info(dev, "Link is up\n");
+ break;
+ case UWB_NOTIF_BG_LEAVE:
+ netif_carrier_off(net_dev);
+ dev_info(dev, "Link is down\n");
+ break;
+ default:
+ dev_err(dev, "don't know how to handle event %d from uwb\n",
+ event);
+ }
+}
+
+/**
+ * Stop the network queue
+ *
+ * Enable WLP substack to stop network queue. We also set the flow control
+ * threshold at this time to prevent the flow control from restarting the
+ * queue.
+ *
+ * we are loosing the current threshold value here ... FIXME?
+ */
+void i1480u_stop_queue(struct wlp *wlp)
+{
+ struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+ struct net_device *net_dev = i1480u->net_dev;
+ i1480u->tx_inflight.threshold = 0;
+ netif_stop_queue(net_dev);
+}
+
+/**
+ * Start the network queue
+ *
+ * Enable WLP substack to start network queue. Also re-enable the flow
+ * control to manage the queue again.
+ *
+ * We re-enable the flow control by storing the default threshold in the
+ * flow control threshold. This means that if the user modified the
+ * threshold before the queue was stopped and restarted that information
+ * will be lost. FIXME?
+ */
+void i1480u_start_queue(struct wlp *wlp)
+{
+ struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+ struct net_device *net_dev = i1480u->net_dev;
+ i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
+ netif_start_queue(net_dev);
+}
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Driver for the Linux Network stack.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * i1480u's RX handling is simple. i1480u will send the received
+ * network packets broken up in fragments; 1 to N fragments make a
+ * packet, we assemble them together and deliver the packet with netif_rx().
+ *
+ * Beacuse each USB transfer is a *single* fragment (except when the
+ * transfer contains a first fragment), each URB called thus
+ * back contains one or two fragments. So we queue N URBs, each with its own
+ * fragment buffer. When a URB is done, we process it (adding to the
+ * current skb from the fragment buffer until complete). Once
+ * processed, we requeue the URB. There is always a bunch of URBs
+ * ready to take data, so the intergap should be minimal.
+ *
+ * An URB's transfer buffer is the data field of a socket buffer. This
+ * reduces copying as data can be passed directly to network layer. If a
+ * complete packet or 1st fragment is received the URB's transfer buffer is
+ * taken away from it and used to send data to the network layer. In this
+ * case a new transfer buffer is allocated to the URB before being requeued.
+ * If a "NEXT" or "LAST" fragment is received, the fragment contents is
+ * appended to the RX packet under construction and the transfer buffer
+ * is reused. To be able to use this buffer to assemble complete packets
+ * we set each buffer's size to that of the MAX ethernet packet that can
+ * be received. There is thus room for improvement in memory usage.
+ *
+ * When the max tx fragment size increases, we should be able to read
+ * data into the skbs directly with very simple code.
+ *
+ * ROADMAP:
+ *
+ * ENTRY POINTS:
+ *
+ * i1480u_rx_setup(): setup RX context [from i1480u_open()]
+ *
+ * i1480u_rx_release(): release RX context [from i1480u_stop()]
+ *
+ * i1480u_rx_cb(): called when the RX USB URB receives a
+ * packet. It removes the header and pushes it up
+ * the Linux netdev stack with netif_rx().
+ *
+ * i1480u_rx_buffer()
+ * i1480u_drop() and i1480u_fix()
+ * i1480u_skb_deliver
+ *
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include "i1480u-wlp.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+
+/**
+ * Setup the RX context
+ *
+ * Each URB is provided with a transfer_buffer that is the data field
+ * of a new socket buffer.
+ */
+int i1480u_rx_setup(struct i1480u *i1480u)
+{
+ int result, cnt;
+ struct device *dev = &i1480u->usb_iface->dev;
+ struct net_device *net_dev = i1480u->net_dev;
+ struct usb_endpoint_descriptor *epd;
+ struct sk_buff *skb;
+
+ /* Alloc RX stuff */
+ i1480u->rx_skb = NULL; /* not in process of receiving packet */
+ result = -ENOMEM;
+ epd = &i1480u->usb_iface->cur_altsetting->endpoint[1].desc;
+ for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+ struct i1480u_rx_buf *rx_buf = &i1480u->rx_buf[cnt];
+ rx_buf->i1480u = i1480u;
+ skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
+ if (!skb) {
+ dev_err(dev,
+ "RX: cannot allocate RX buffer %d\n", cnt);
+ result = -ENOMEM;
+ goto error;
+ }
+ skb->dev = net_dev;
+ skb->ip_summed = CHECKSUM_NONE;
+ skb_reserve(skb, 2);
+ rx_buf->data = skb;
+ rx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (unlikely(rx_buf->urb == NULL)) {
+ dev_err(dev, "RX: cannot allocate URB %d\n", cnt);
+ result = -ENOMEM;
+ goto error;
+ }
+ usb_fill_bulk_urb(rx_buf->urb, i1480u->usb_dev,
+ usb_rcvbulkpipe(i1480u->usb_dev, epd->bEndpointAddress),
+ rx_buf->data->data, i1480u_MAX_RX_PKT_SIZE - 2,
+ i1480u_rx_cb, rx_buf);
+ result = usb_submit_urb(rx_buf->urb, GFP_NOIO);
+ if (unlikely(result < 0)) {
+ dev_err(dev, "RX: cannot submit URB %d: %d\n",
+ cnt, result);
+ goto error;
+ }
+ }
+ return 0;
+
+error:
+ i1480u_rx_release(i1480u);
+ return result;
+}
+
+
+/** Release resources associated to the rx context */
+void i1480u_rx_release(struct i1480u *i1480u)
+{
+ int cnt;
+ for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+ if (i1480u->rx_buf[cnt].data)
+ dev_kfree_skb(i1480u->rx_buf[cnt].data);
+ if (i1480u->rx_buf[cnt].urb) {
+ usb_kill_urb(i1480u->rx_buf[cnt].urb);
+ usb_free_urb(i1480u->rx_buf[cnt].urb);
+ }
+ }
+ if (i1480u->rx_skb != NULL)
+ dev_kfree_skb(i1480u->rx_skb);
+}
+
+static
+void i1480u_rx_unlink_urbs(struct i1480u *i1480u)
+{
+ int cnt;
+ for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
+ if (i1480u->rx_buf[cnt].urb)
+ usb_unlink_urb(i1480u->rx_buf[cnt].urb);
+ }
+}
+
+/** Fix an out-of-sequence packet */
+#define i1480u_fix(i1480u, msg...) \
+do { \
+ if (printk_ratelimit()) \
+ dev_err(&i1480u->usb_iface->dev, msg); \
+ dev_kfree_skb_irq(i1480u->rx_skb); \
+ i1480u->rx_skb = NULL; \
+ i1480u->rx_untd_pkt_size = 0; \
+} while (0)
+
+
+/** Drop an out-of-sequence packet */
+#define i1480u_drop(i1480u, msg...) \
+do { \
+ if (printk_ratelimit()) \
+ dev_err(&i1480u->usb_iface->dev, msg); \
+ i1480u->stats.rx_dropped++; \
+} while (0)
+
+
+
+
+/** Finalizes setting up the SKB and delivers it
+ *
+ * We first pass the incoming frame to WLP substack for verification. It
+ * may also be a WLP association frame in which case WLP will take over the
+ * processing. If WLP does not take it over it will still verify it, if the
+ * frame is invalid the skb will be freed by WLP and we will not continue
+ * parsing.
+ * */
+static
+void i1480u_skb_deliver(struct i1480u *i1480u)
+{
+ int should_parse;
+ struct net_device *net_dev = i1480u->net_dev;
+ struct device *dev = &i1480u->usb_iface->dev;
+
+ d_printf(6, dev, "RX delivered pre skb(%p), %u bytes\n",
+ i1480u->rx_skb, i1480u->rx_skb->len);
+ d_dump(7, dev, i1480u->rx_skb->data, i1480u->rx_skb->len);
+ should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb,
+ &i1480u->rx_srcaddr);
+ if (!should_parse)
+ goto out;
+ i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev);
+ d_printf(5, dev, "RX delivered skb(%p), %u bytes\n",
+ i1480u->rx_skb, i1480u->rx_skb->len);
+ d_dump(7, dev, i1480u->rx_skb->data,
+ i1480u->rx_skb->len > 72 ? 72 : i1480u->rx_skb->len);
+ i1480u->stats.rx_packets++;
+ i1480u->stats.rx_bytes += i1480u->rx_untd_pkt_size;
+ net_dev->last_rx = jiffies;
+ /* FIXME: flow control: check netif_rx() retval */
+
+ netif_rx(i1480u->rx_skb); /* deliver */
+out:
+ i1480u->rx_skb = NULL;
+ i1480u->rx_untd_pkt_size = 0;
+}
+
+
+/**
+ * Process a buffer of data received from the USB RX endpoint
+ *
+ * First fragment arrives with next or last fragment. All other fragments
+ * arrive alone.
+ *
+ * /me hates long functions.
+ */
+static
+void i1480u_rx_buffer(struct i1480u_rx_buf *rx_buf)
+{
+ unsigned pkt_completed = 0; /* !0 when we got all pkt fragments */
+ size_t untd_hdr_size, untd_frg_size;
+ size_t i1480u_hdr_size;
+ struct wlp_rx_hdr *i1480u_hdr = NULL;
+
+ struct i1480u *i1480u = rx_buf->i1480u;
+ struct sk_buff *skb = rx_buf->data;
+ int size_left = rx_buf->urb->actual_length;
+ void *ptr = rx_buf->urb->transfer_buffer; /* also rx_buf->data->data */
+ struct untd_hdr *untd_hdr;
+
+ struct net_device *net_dev = i1480u->net_dev;
+ struct device *dev = &i1480u->usb_iface->dev;
+ struct sk_buff *new_skb;
+
+#if 0
+ dev_fnstart(dev,
+ "(i1480u %p ptr %p size_left %zu)\n", i1480u, ptr, size_left);
+ dev_err(dev, "RX packet, %zu bytes\n", size_left);
+ dump_bytes(dev, ptr, size_left);
+#endif
+ i1480u_hdr_size = sizeof(struct wlp_rx_hdr);
+
+ while (size_left > 0) {
+ if (pkt_completed) {
+ i1480u_drop(i1480u, "RX: fragment follows completed"
+ "packet in same buffer. Dropping\n");
+ break;
+ }
+ untd_hdr = ptr;
+ if (size_left < sizeof(*untd_hdr)) { /* Check the UNTD header */
+ i1480u_drop(i1480u, "RX: short UNTD header! Dropping\n");
+ goto out;
+ }
+ if (unlikely(untd_hdr_rx_tx(untd_hdr) == 0)) { /* Paranoia: TX set? */
+ i1480u_drop(i1480u, "RX: TX bit set! Dropping\n");
+ goto out;
+ }
+ switch (untd_hdr_type(untd_hdr)) { /* Check the UNTD header type */
+ case i1480u_PKT_FRAG_1ST: {
+ struct untd_hdr_1st *untd_hdr_1st = (void *) untd_hdr;
+ dev_dbg(dev, "1st fragment\n");
+ untd_hdr_size = sizeof(struct untd_hdr_1st);
+ if (i1480u->rx_skb != NULL)
+ i1480u_fix(i1480u, "RX: 1st fragment out of "
+ "sequence! Fixing\n");
+ if (size_left < untd_hdr_size + i1480u_hdr_size) {
+ i1480u_drop(i1480u, "RX: short 1st fragment! "
+ "Dropping\n");
+ goto out;
+ }
+ i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len)
+ - i1480u_hdr_size;
+ untd_frg_size = le16_to_cpu(untd_hdr_1st->fragment_len);
+ if (size_left < untd_hdr_size + untd_frg_size) {
+ i1480u_drop(i1480u,
+ "RX: short payload! Dropping\n");
+ goto out;
+ }
+ i1480u->rx_skb = skb;
+ i1480u_hdr = (void *) untd_hdr_1st + untd_hdr_size;
+ i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
+ skb_put(i1480u->rx_skb, untd_hdr_size + untd_frg_size);
+ skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
+ stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
+ stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
+ rx_buf->data = NULL; /* need to create new buffer */
+ break;
+ }
+ case i1480u_PKT_FRAG_NXT: {
+ dev_dbg(dev, "nxt fragment\n");
+ untd_hdr_size = sizeof(struct untd_hdr_rst);
+ if (i1480u->rx_skb == NULL) {
+ i1480u_drop(i1480u, "RX: next fragment out of "
+ "sequence! Dropping\n");
+ goto out;
+ }
+ if (size_left < untd_hdr_size) {
+ i1480u_drop(i1480u, "RX: short NXT fragment! "
+ "Dropping\n");
+ goto out;
+ }
+ untd_frg_size = le16_to_cpu(untd_hdr->len);
+ if (size_left < untd_hdr_size + untd_frg_size) {
+ i1480u_drop(i1480u,
+ "RX: short payload! Dropping\n");
+ goto out;
+ }
+ memmove(skb_put(i1480u->rx_skb, untd_frg_size),
+ ptr + untd_hdr_size, untd_frg_size);
+ break;
+ }
+ case i1480u_PKT_FRAG_LST: {
+ dev_dbg(dev, "Lst fragment\n");
+ untd_hdr_size = sizeof(struct untd_hdr_rst);
+ if (i1480u->rx_skb == NULL) {
+ i1480u_drop(i1480u, "RX: last fragment out of "
+ "sequence! Dropping\n");
+ goto out;
+ }
+ if (size_left < untd_hdr_size) {
+ i1480u_drop(i1480u, "RX: short LST fragment! "
+ "Dropping\n");
+ goto out;
+ }
+ untd_frg_size = le16_to_cpu(untd_hdr->len);
+ if (size_left < untd_frg_size + untd_hdr_size) {
+ i1480u_drop(i1480u,
+ "RX: short payload! Dropping\n");
+ goto out;
+ }
+ memmove(skb_put(i1480u->rx_skb, untd_frg_size),
+ ptr + untd_hdr_size, untd_frg_size);
+ pkt_completed = 1;
+ break;
+ }
+ case i1480u_PKT_FRAG_CMP: {
+ dev_dbg(dev, "cmp fragment\n");
+ untd_hdr_size = sizeof(struct untd_hdr_cmp);
+ if (i1480u->rx_skb != NULL)
+ i1480u_fix(i1480u, "RX: fix out-of-sequence CMP"
+ " fragment!\n");
+ if (size_left < untd_hdr_size + i1480u_hdr_size) {
+ i1480u_drop(i1480u, "RX: short CMP fragment! "
+ "Dropping\n");
+ goto out;
+ }
+ i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len);
+ untd_frg_size = i1480u->rx_untd_pkt_size;
+ if (size_left < i1480u->rx_untd_pkt_size + untd_hdr_size) {
+ i1480u_drop(i1480u,
+ "RX: short payload! Dropping\n");
+ goto out;
+ }
+ i1480u->rx_skb = skb;
+ i1480u_hdr = (void *) untd_hdr + untd_hdr_size;
+ i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
+ stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
+ stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
+ skb_put(i1480u->rx_skb, untd_hdr_size + i1480u->rx_untd_pkt_size);
+ skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
+ rx_buf->data = NULL; /* for hand off skb to network stack */
+ pkt_completed = 1;
+ i1480u->rx_untd_pkt_size -= i1480u_hdr_size; /* accurate stat */
+ break;
+ }
+ default:
+ i1480u_drop(i1480u, "RX: unknown packet type %u! "
+ "Dropping\n", untd_hdr_type(untd_hdr));
+ goto out;
+ }
+ size_left -= untd_hdr_size + untd_frg_size;
+ if (size_left > 0)
+ ptr += untd_hdr_size + untd_frg_size;
+ }
+ if (pkt_completed)
+ i1480u_skb_deliver(i1480u);
+out:
+ /* recreate needed RX buffers*/
+ if (rx_buf->data == NULL) {
+ /* buffer is being used to receive packet, create new */
+ new_skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
+ if (!new_skb) {
+ if (printk_ratelimit())
+ dev_err(dev,
+ "RX: cannot allocate RX buffer\n");
+ } else {
+ new_skb->dev = net_dev;
+ new_skb->ip_summed = CHECKSUM_NONE;
+ skb_reserve(new_skb, 2);
+ rx_buf->data = new_skb;
+ }
+ }
+ return;
+}
+
+
+/**
+ * Called when an RX URB has finished receiving or has found some kind
+ * of error condition.
+ *
+ * LIMITATIONS:
+ *
+ * - We read USB-transfers, each transfer contains a SINGLE fragment
+ * (can contain a complete packet, or a 1st, next, or last fragment
+ * of a packet).
+ * Looks like a transfer can contain more than one fragment (07/18/06)
+ *
+ * - Each transfer buffer is the size of the maximum packet size (minus
+ * headroom), i1480u_MAX_PKT_SIZE - 2
+ *
+ * - We always read the full USB-transfer, no partials.
+ *
+ * - Each transfer is read directly into a skb. This skb will be used to
+ * send data to the upper layers if it is the first fragment or a complete
+ * packet. In the other cases the data will be copied from the skb to
+ * another skb that is being prepared for the upper layers from a prev
+ * first fragment.
+ *
+ * It is simply too much of a pain. Gosh, there should be a unified
+ * SG infrastructure for *everything* [so that I could declare a SG
+ * buffer, pass it to USB for receiving, append some space to it if
+ * I wish, receive more until I have the whole chunk, adapt
+ * pointers on each fragment to remove hardware headers and then
+ * attach that to an skbuff and netif_rx()].
+ */
+void i1480u_rx_cb(struct urb *urb)
+{
+ int result;
+ int do_parse_buffer = 1;
+ struct i1480u_rx_buf *rx_buf = urb->context;
+ struct i1480u *i1480u = rx_buf->i1480u;
+ struct device *dev = &i1480u->usb_iface->dev;
+ unsigned long flags;
+ u8 rx_buf_idx = rx_buf - i1480u->rx_buf;
+
+ switch (urb->status) {
+ case 0:
+ break;
+ case -ECONNRESET: /* Not an error, but a controlled situation; */
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ case -ESHUTDOWN: /* going away! */
+ dev_err(dev, "RX URB[%u]: goind down %d\n",
+ rx_buf_idx, urb->status);
+ goto error;
+ default:
+ dev_err(dev, "RX URB[%u]: unknown status %d\n",
+ rx_buf_idx, urb->status);
+ if (edc_inc(&i1480u->rx_errors, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "RX: max acceptable errors exceeded,"
+ " resetting device.\n");
+ i1480u_rx_unlink_urbs(i1480u);
+ wlp_reset_all(&i1480u->wlp);
+ goto error;
+ }
+ do_parse_buffer = 0;
+ break;
+ }
+ spin_lock_irqsave(&i1480u->lock, flags);
+ /* chew the data fragments, extract network packets */
+ if (do_parse_buffer) {
+ i1480u_rx_buffer(rx_buf);
+ if (rx_buf->data) {
+ rx_buf->urb->transfer_buffer = rx_buf->data->data;
+ result = usb_submit_urb(rx_buf->urb, GFP_ATOMIC);
+ if (result < 0) {
+ dev_err(dev, "RX URB[%u]: cannot submit %d\n",
+ rx_buf_idx, result);
+ }
+ }
+ }
+ spin_unlock_irqrestore(&i1480u->lock, flags);
+error:
+ return;
+}
+
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Sysfs interfaces
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/uwb/debug.h>
+#include <linux/device.h>
+#include "i1480u-wlp.h"
+
+
+/**
+ *
+ * @dev: Class device from the net_device; assumed refcnted.
+ *
+ * Yes, I don't lock--we assume it is refcounted and I am getting a
+ * single byte value that is kind of atomic to read.
+ */
+ssize_t uwb_phy_rate_show(const struct wlp_options *options, char *buf)
+{
+ return sprintf(buf, "%u\n",
+ wlp_tx_hdr_phy_rate(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_phy_rate_show);
+
+
+ssize_t uwb_phy_rate_store(struct wlp_options *options,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ unsigned rate;
+
+ result = sscanf(buf, "%u\n", &rate);
+ if (result != 1) {
+ result = -EINVAL;
+ goto out;
+ }
+ result = -EINVAL;
+ if (rate >= UWB_PHY_RATE_INVALID)
+ goto out;
+ wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, rate);
+ result = 0;
+out:
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_phy_rate_store);
+
+
+ssize_t uwb_rts_cts_show(const struct wlp_options *options, char *buf)
+{
+ return sprintf(buf, "%u\n",
+ wlp_tx_hdr_rts_cts(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_rts_cts_show);
+
+
+ssize_t uwb_rts_cts_store(struct wlp_options *options,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ unsigned value;
+
+ result = sscanf(buf, "%u\n", &value);
+ if (result != 1) {
+ result = -EINVAL;
+ goto out;
+ }
+ result = -EINVAL;
+ wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, !!value);
+ result = 0;
+out:
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_rts_cts_store);
+
+
+ssize_t uwb_ack_policy_show(const struct wlp_options *options, char *buf)
+{
+ return sprintf(buf, "%u\n",
+ wlp_tx_hdr_ack_policy(&options->def_tx_hdr));
+}
+EXPORT_SYMBOL_GPL(uwb_ack_policy_show);
+
+
+ssize_t uwb_ack_policy_store(struct wlp_options *options,
+ const char *buf, size_t size)
+{
+ ssize_t result;
+ unsigned value;
+
+ result = sscanf(buf, "%u\n", &value);
+ if (result != 1 || value > UWB_ACK_B_REQ) {
+ result = -EINVAL;
+ goto out;
+ }
+ wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, value);
+ result = 0;
+out:
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_ack_policy_store);
+
+
+/**
+ * Show the PCA base priority.
+ *
+ * We can access without locking, as the value is (for now) orthogonal
+ * to other values.
+ */
+ssize_t uwb_pca_base_priority_show(const struct wlp_options *options,
+ char *buf)
+{
+ return sprintf(buf, "%u\n",
+ options->pca_base_priority);
+}
+EXPORT_SYMBOL_GPL(uwb_pca_base_priority_show);
+
+
+/**
+ * Set the PCA base priority.
+ *
+ * We can access without locking, as the value is (for now) orthogonal
+ * to other values.
+ */
+ssize_t uwb_pca_base_priority_store(struct wlp_options *options,
+ const char *buf, size_t size)
+{
+ ssize_t result = -EINVAL;
+ u8 pca_base_priority;
+
+ result = sscanf(buf, "%hhu\n", &pca_base_priority);
+ if (result != 1) {
+ result = -EINVAL;
+ goto out;
+ }
+ result = -EINVAL;
+ if (pca_base_priority >= 8)
+ goto out;
+ options->pca_base_priority = pca_base_priority;
+ /* Update TX header if we are currently using PCA. */
+ if (result >= 0 && (wlp_tx_hdr_delivery_id_type(&options->def_tx_hdr) & WLP_DRP) == 0)
+ wlp_tx_hdr_set_delivery_id_type(&options->def_tx_hdr, options->pca_base_priority);
+ result = 0;
+out:
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(uwb_pca_base_priority_store);
+
+/**
+ * Show current inflight values
+ *
+ * Will print the current MAX and THRESHOLD values for the basic flow
+ * control. In addition it will report how many times the TX queue needed
+ * to be restarted since the last time this query was made.
+ */
+static ssize_t wlp_tx_inflight_show(struct i1480u_tx_inflight *inflight,
+ char *buf)
+{
+ ssize_t result;
+ unsigned long sec_elapsed = (jiffies - inflight->restart_ts)/HZ;
+ unsigned long restart_count = atomic_read(&inflight->restart_count);
+
+ result = scnprintf(buf, PAGE_SIZE, "%lu %lu %d %lu %lu %lu\n"
+ "#read: threshold max inflight_count restarts "
+ "seconds restarts/sec\n"
+ "#write: threshold max\n",
+ inflight->threshold, inflight->max,
+ atomic_read(&inflight->count),
+ restart_count, sec_elapsed,
+ sec_elapsed == 0 ? 0 : restart_count/sec_elapsed);
+ inflight->restart_ts = jiffies;
+ atomic_set(&inflight->restart_count, 0);
+ return result;
+}
+
+static
+ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight,
+ const char *buf, size_t size)
+{
+ unsigned long in_threshold, in_max;
+ ssize_t result;
+ result = sscanf(buf, "%lu %lu", &in_threshold, &in_max);
+ if (result != 2)
+ return -EINVAL;
+ if (in_max <= in_threshold)
+ return -EINVAL;
+ inflight->max = in_max;
+ inflight->threshold = in_threshold;
+ return size;
+}
+/*
+ * Glue (or function adaptors) for accesing info on sysfs
+ *
+ * [we need this indirection because the PCI driver does almost the
+ * same]
+ *
+ * Linux 2.6.21 changed how 'struct netdevice' does attributes (from
+ * having a 'struct class_dev' to having a 'struct device'). That is
+ * quite of a pain.
+ *
+ * So we try to abstract that here. i1480u_SHOW() and i1480u_STORE()
+ * create adaptors for extracting the 'struct i1480u' from a 'struct
+ * dev' and calling a function for doing a sysfs operation (as we have
+ * them factorized already). i1480u_ATTR creates the attribute file
+ * (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
+ * class_device_attr_NAME or device_attr_NAME (for group registration).
+ */
+#include <linux/version.h>
+
+#define i1480u_SHOW(name, fn, param) \
+static ssize_t i1480u_show_##name(struct device *dev, \
+ struct device_attribute *attr,\
+ char *buf) \
+{ \
+ struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
+ return fn(&i1480u->param, buf); \
+}
+
+#define i1480u_STORE(name, fn, param) \
+static ssize_t i1480u_store_##name(struct device *dev, \
+ struct device_attribute *attr,\
+ const char *buf, size_t size)\
+{ \
+ struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
+ return fn(&i1480u->param, buf, size); \
+}
+
+#define i1480u_ATTR(name, perm) static DEVICE_ATTR(name, perm, \
+ i1480u_show_##name,\
+ i1480u_store_##name)
+
+#define i1480u_ATTR_SHOW(name) static DEVICE_ATTR(name, \
+ S_IRUGO, \
+ i1480u_show_##name, NULL)
+
+#define i1480u_ATTR_NAME(a) (dev_attr_##a)
+
+
+/*
+ * Sysfs adaptors
+ */
+i1480u_SHOW(uwb_phy_rate, uwb_phy_rate_show, options);
+i1480u_STORE(uwb_phy_rate, uwb_phy_rate_store, options);
+i1480u_ATTR(uwb_phy_rate, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_rts_cts, uwb_rts_cts_show, options);
+i1480u_STORE(uwb_rts_cts, uwb_rts_cts_store, options);
+i1480u_ATTR(uwb_rts_cts, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_ack_policy, uwb_ack_policy_show, options);
+i1480u_STORE(uwb_ack_policy, uwb_ack_policy_store, options);
+i1480u_ATTR(uwb_ack_policy, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(uwb_pca_base_priority, uwb_pca_base_priority_show, options);
+i1480u_STORE(uwb_pca_base_priority, uwb_pca_base_priority_store, options);
+i1480u_ATTR(uwb_pca_base_priority, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_eda, wlp_eda_show, wlp);
+i1480u_STORE(wlp_eda, wlp_eda_store, wlp);
+i1480u_ATTR(wlp_eda, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_uuid, wlp_uuid_show, wlp);
+i1480u_STORE(wlp_uuid, wlp_uuid_store, wlp);
+i1480u_ATTR(wlp_uuid, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_name, wlp_dev_name_show, wlp);
+i1480u_STORE(wlp_dev_name, wlp_dev_name_store, wlp);
+i1480u_ATTR(wlp_dev_name, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_manufacturer, wlp_dev_manufacturer_show, wlp);
+i1480u_STORE(wlp_dev_manufacturer, wlp_dev_manufacturer_store, wlp);
+i1480u_ATTR(wlp_dev_manufacturer, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_model_name, wlp_dev_model_name_show, wlp);
+i1480u_STORE(wlp_dev_model_name, wlp_dev_model_name_store, wlp);
+i1480u_ATTR(wlp_dev_model_name, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_model_nr, wlp_dev_model_nr_show, wlp);
+i1480u_STORE(wlp_dev_model_nr, wlp_dev_model_nr_store, wlp);
+i1480u_ATTR(wlp_dev_model_nr, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_serial, wlp_dev_serial_show, wlp);
+i1480u_STORE(wlp_dev_serial, wlp_dev_serial_store, wlp);
+i1480u_ATTR(wlp_dev_serial, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_category, wlp_dev_prim_category_show, wlp);
+i1480u_STORE(wlp_dev_prim_category, wlp_dev_prim_category_store, wlp);
+i1480u_ATTR(wlp_dev_prim_category, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_OUI, wlp_dev_prim_OUI_show, wlp);
+i1480u_STORE(wlp_dev_prim_OUI, wlp_dev_prim_OUI_store, wlp);
+i1480u_ATTR(wlp_dev_prim_OUI, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_show, wlp);
+i1480u_STORE(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_store, wlp);
+i1480u_ATTR(wlp_dev_prim_OUI_sub, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_dev_prim_subcat, wlp_dev_prim_subcat_show, wlp);
+i1480u_STORE(wlp_dev_prim_subcat, wlp_dev_prim_subcat_store, wlp);
+i1480u_ATTR(wlp_dev_prim_subcat, S_IRUGO | S_IWUSR);
+
+i1480u_SHOW(wlp_neighborhood, wlp_neighborhood_show, wlp);
+i1480u_ATTR_SHOW(wlp_neighborhood);
+
+i1480u_SHOW(wss_activate, wlp_wss_activate_show, wlp.wss);
+i1480u_STORE(wss_activate, wlp_wss_activate_store, wlp.wss);
+i1480u_ATTR(wss_activate, S_IRUGO | S_IWUSR);
+
+/*
+ * Show the (min, max, avg) Line Quality Estimate (LQE, in dB) as over
+ * the last 256 received WLP frames (ECMA-368 13.3).
+ *
+ * [the -7dB that have to be substracted from the LQI to make the LQE
+ * are already taken into account].
+ */
+i1480u_SHOW(wlp_lqe, stats_show, lqe_stats);
+i1480u_STORE(wlp_lqe, stats_store, lqe_stats);
+i1480u_ATTR(wlp_lqe, S_IRUGO | S_IWUSR);
+
+/*
+ * Show the Receive Signal Strength Indicator averaged over all the
+ * received WLP frames (ECMA-368 13.3). Still is not clear what
+ * this value is, but is kind of a percentage of the signal strength
+ * at the antenna.
+ */
+i1480u_SHOW(wlp_rssi, stats_show, rssi_stats);
+i1480u_STORE(wlp_rssi, stats_store, rssi_stats);
+i1480u_ATTR(wlp_rssi, S_IRUGO | S_IWUSR);
+
+/**
+ * We maintain a basic flow control counter. "count" how many TX URBs are
+ * outstanding. Only allow "max"
+ * TX URBs to be outstanding. If this value is reached the queue will be
+ * stopped. The queue will be restarted when there are
+ * "threshold" URBs outstanding.
+ */
+i1480u_SHOW(wlp_tx_inflight, wlp_tx_inflight_show, tx_inflight);
+i1480u_STORE(wlp_tx_inflight, wlp_tx_inflight_store, tx_inflight);
+i1480u_ATTR(wlp_tx_inflight, S_IRUGO | S_IWUSR);
+
+static struct attribute *i1480u_attrs[] = {
+ &i1480u_ATTR_NAME(uwb_phy_rate).attr,
+ &i1480u_ATTR_NAME(uwb_rts_cts).attr,
+ &i1480u_ATTR_NAME(uwb_ack_policy).attr,
+ &i1480u_ATTR_NAME(uwb_pca_base_priority).attr,
+ &i1480u_ATTR_NAME(wlp_lqe).attr,
+ &i1480u_ATTR_NAME(wlp_rssi).attr,
+ &i1480u_ATTR_NAME(wlp_eda).attr,
+ &i1480u_ATTR_NAME(wlp_uuid).attr,
+ &i1480u_ATTR_NAME(wlp_dev_name).attr,
+ &i1480u_ATTR_NAME(wlp_dev_manufacturer).attr,
+ &i1480u_ATTR_NAME(wlp_dev_model_name).attr,
+ &i1480u_ATTR_NAME(wlp_dev_model_nr).attr,
+ &i1480u_ATTR_NAME(wlp_dev_serial).attr,
+ &i1480u_ATTR_NAME(wlp_dev_prim_category).attr,
+ &i1480u_ATTR_NAME(wlp_dev_prim_OUI).attr,
+ &i1480u_ATTR_NAME(wlp_dev_prim_OUI_sub).attr,
+ &i1480u_ATTR_NAME(wlp_dev_prim_subcat).attr,
+ &i1480u_ATTR_NAME(wlp_neighborhood).attr,
+ &i1480u_ATTR_NAME(wss_activate).attr,
+ &i1480u_ATTR_NAME(wlp_tx_inflight).attr,
+ NULL,
+};
+
+static struct attribute_group i1480u_attr_group = {
+ .name = NULL, /* we want them in the same directory */
+ .attrs = i1480u_attrs,
+};
+
+int i1480u_sysfs_setup(struct i1480u *i1480u)
+{
+ int result;
+ struct device *dev = &i1480u->usb_iface->dev;
+ result = sysfs_create_group(&i1480u->net_dev->dev.kobj,
+ &i1480u_attr_group);
+ if (result < 0)
+ dev_err(dev, "cannot initialize sysfs attributes: %d\n",
+ result);
+ return result;
+}
+
+
+void i1480u_sysfs_release(struct i1480u *i1480u)
+{
+ sysfs_remove_group(&i1480u->net_dev->dev.kobj,
+ &i1480u_attr_group);
+}
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Deal with TX (massaging data to transmit, handling it)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Transmission engine. Get an skb, create from that a WLP transmit
+ * context, add a WLP TX header (which we keep prefilled in the
+ * device's instance), fill out the target-specific fields and
+ * fire it.
+ *
+ * ROADMAP:
+ *
+ * Entry points:
+ *
+ * i1480u_tx_release(): called by i1480u_disconnect() to release
+ * pending tx contexts.
+ *
+ * i1480u_tx_cb(): callback for TX contexts (USB URBs)
+ * i1480u_tx_destroy():
+ *
+ * i1480u_tx_timeout(): called for timeout handling from the
+ * network stack.
+ *
+ * i1480u_hard_start_xmit(): called for transmitting an skb from
+ * the network stack. Will interact with WLP
+ * substack to verify and prepare frame.
+ * i1480u_xmit_frame(): actual transmission on hardware
+ *
+ * i1480u_tx_create() Creates TX context
+ * i1480u_tx_create_1() For packets in 1 fragment
+ * i1480u_tx_create_n() For packets in >1 fragments
+ *
+ * TODO:
+ *
+ * - FIXME: rewrite using usb_sg_*(), add asynch support to
+ * usb_sg_*(). It might not make too much sense as most of
+ * the times the MTU will be smaller than one page...
+ */
+
+#include "i1480u-wlp.h"
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+
+enum {
+ /* This is only for Next and Last TX packets */
+ i1480u_MAX_PL_SIZE = i1480u_MAX_FRG_SIZE
+ - sizeof(struct untd_hdr_rst),
+};
+
+/** Free resources allocated to a i1480u tx context. */
+static
+void i1480u_tx_free(struct i1480u_tx *wtx)
+{
+ kfree(wtx->buf);
+ if (wtx->skb)
+ dev_kfree_skb_irq(wtx->skb);
+ usb_free_urb(wtx->urb);
+ kfree(wtx);
+}
+
+static
+void i1480u_tx_destroy(struct i1480u *i1480u, struct i1480u_tx *wtx)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&i1480u->tx_list_lock, flags); /* not active any more */
+ list_del(&wtx->list_node);
+ i1480u_tx_free(wtx);
+ spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+}
+
+static
+void i1480u_tx_unlink_urbs(struct i1480u *i1480u)
+{
+ unsigned long flags;
+ struct i1480u_tx *wtx, *next;
+
+ spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+ list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
+ usb_unlink_urb(wtx->urb);
+ }
+ spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+}
+
+
+/**
+ * Callback for a completed tx USB URB.
+ *
+ * TODO:
+ *
+ * - FIXME: recover errors more gracefully
+ * - FIXME: handle NAKs (I dont think they come here) for flow ctl
+ */
+static
+void i1480u_tx_cb(struct urb *urb)
+{
+ struct i1480u_tx *wtx = urb->context;
+ struct i1480u *i1480u = wtx->i1480u;
+ struct net_device *net_dev = i1480u->net_dev;
+ struct device *dev = &i1480u->usb_iface->dev;
+ unsigned long flags;
+
+ switch (urb->status) {
+ case 0:
+ spin_lock_irqsave(&i1480u->lock, flags);
+ i1480u->stats.tx_packets++;
+ i1480u->stats.tx_bytes += urb->actual_length;
+ spin_unlock_irqrestore(&i1480u->lock, flags);
+ break;
+ case -ECONNRESET: /* Not an error, but a controlled situation; */
+ case -ENOENT: /* (we killed the URB)...so, no broadcast */
+ dev_dbg(dev, "notif endp: reset/noent %d\n", urb->status);
+ netif_stop_queue(net_dev);
+ break;
+ case -ESHUTDOWN: /* going away! */
+ dev_dbg(dev, "notif endp: down %d\n", urb->status);
+ netif_stop_queue(net_dev);
+ break;
+ default:
+ dev_err(dev, "TX: unknown URB status %d\n", urb->status);
+ if (edc_inc(&i1480u->tx_errors, EDC_MAX_ERRORS,
+ EDC_ERROR_TIMEFRAME)) {
+ dev_err(dev, "TX: max acceptable errors exceeded."
+ "Reset device.\n");
+ netif_stop_queue(net_dev);
+ i1480u_tx_unlink_urbs(i1480u);
+ wlp_reset_all(&i1480u->wlp);
+ }
+ break;
+ }
+ i1480u_tx_destroy(i1480u, wtx);
+ if (atomic_dec_return(&i1480u->tx_inflight.count)
+ <= i1480u->tx_inflight.threshold
+ && netif_queue_stopped(net_dev)
+ && i1480u->tx_inflight.threshold != 0) {
+ if (d_test(2) && printk_ratelimit())
+ d_printf(2, dev, "Restart queue. \n");
+ netif_start_queue(net_dev);
+ atomic_inc(&i1480u->tx_inflight.restart_count);
+ }
+ return;
+}
+
+
+/**
+ * Given a buffer that doesn't fit in a single fragment, create an
+ * scatter/gather structure for delivery to the USB pipe.
+ *
+ * Implements functionality of i1480u_tx_create().
+ *
+ * @wtx: tx descriptor
+ * @skb: skb to send
+ * @gfp_mask: gfp allocation mask
+ * @returns: Pointer to @wtx if ok, NULL on error.
+ *
+ * Sorry, TOO LONG a function, but breaking it up is kind of hard
+ *
+ * This will break the buffer in chunks smaller than
+ * i1480u_MAX_FRG_SIZE (including the header) and add proper headers
+ * to each:
+ *
+ * 1st header \
+ * i1480 tx header | fragment 1
+ * fragment data /
+ * nxt header \ fragment 2
+ * fragment data /
+ * ..
+ * ..
+ * last header \ fragment 3
+ * last fragment data /
+ *
+ * This does not fill the i1480 TX header, it is left up to the
+ * caller to do that; you can get it from @wtx->wlp_tx_hdr.
+ *
+ * This function consumes the skb unless there is an error.
+ */
+static
+int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
+ gfp_t gfp_mask)
+{
+ int result;
+ void *pl;
+ size_t pl_size;
+
+ void *pl_itr, *buf_itr;
+ size_t pl_size_left, frgs, pl_size_1st, frg_pl_size = 0;
+ struct untd_hdr_1st *untd_hdr_1st;
+ struct wlp_tx_hdr *wlp_tx_hdr;
+ struct untd_hdr_rst *untd_hdr_rst;
+
+ wtx->skb = NULL;
+ pl = skb->data;
+ pl_itr = pl;
+ pl_size = skb->len;
+ pl_size_left = pl_size; /* payload size */
+ /* First fragment; fits as much as i1480u_MAX_FRG_SIZE minus
+ * the headers */
+ pl_size_1st = i1480u_MAX_FRG_SIZE
+ - sizeof(struct untd_hdr_1st) - sizeof(struct wlp_tx_hdr);
+ BUG_ON(pl_size_1st > pl_size);
+ pl_size_left -= pl_size_1st;
+ /* The rest have an smaller header (no i1480 TX header). We
+ * need to break up the payload in blocks smaller than
+ * i1480u_MAX_PL_SIZE (payload excluding header). */
+ frgs = (pl_size_left + i1480u_MAX_PL_SIZE - 1) / i1480u_MAX_PL_SIZE;
+ /* Allocate space for the new buffer. In this new buffer we'll
+ * place the headers followed by the data fragment, headers,
+ * data fragments, etc..
+ */
+ result = -ENOMEM;
+ wtx->buf_size = sizeof(*untd_hdr_1st)
+ + sizeof(*wlp_tx_hdr)
+ + frgs * sizeof(*untd_hdr_rst)
+ + pl_size;
+ wtx->buf = kmalloc(wtx->buf_size, gfp_mask);
+ if (wtx->buf == NULL)
+ goto error_buf_alloc;
+
+ buf_itr = wtx->buf; /* We got the space, let's fill it up */
+ /* Fill 1st fragment */
+ untd_hdr_1st = buf_itr;
+ buf_itr += sizeof(*untd_hdr_1st);
+ untd_hdr_set_type(&untd_hdr_1st->hdr, i1480u_PKT_FRAG_1ST);
+ untd_hdr_set_rx_tx(&untd_hdr_1st->hdr, 0);
+ untd_hdr_1st->hdr.len = cpu_to_le16(pl_size + sizeof(*wlp_tx_hdr));
+ untd_hdr_1st->fragment_len =
+ cpu_to_le16(pl_size_1st + sizeof(*wlp_tx_hdr));
+ memset(untd_hdr_1st->padding, 0, sizeof(untd_hdr_1st->padding));
+ /* Set up i1480 header info */
+ wlp_tx_hdr = wtx->wlp_tx_hdr = buf_itr;
+ buf_itr += sizeof(*wlp_tx_hdr);
+ /* Copy the first fragment */
+ memcpy(buf_itr, pl_itr, pl_size_1st);
+ pl_itr += pl_size_1st;
+ buf_itr += pl_size_1st;
+
+ /* Now do each remaining fragment */
+ result = -EINVAL;
+ while (pl_size_left > 0) {
+ d_printf(5, NULL, "ITR HDR: pl_size_left %zu buf_itr %zu\n",
+ pl_size_left, buf_itr - wtx->buf);
+ if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf
+ > wtx->buf_size) {
+ printk(KERN_ERR "BUG: no space for header\n");
+ goto error_bug;
+ }
+ d_printf(5, NULL, "ITR HDR 2: pl_size_left %zu buf_itr %zu\n",
+ pl_size_left, buf_itr - wtx->buf);
+ untd_hdr_rst = buf_itr;
+ buf_itr += sizeof(*untd_hdr_rst);
+ if (pl_size_left > i1480u_MAX_PL_SIZE) {
+ frg_pl_size = i1480u_MAX_PL_SIZE;
+ untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_NXT);
+ } else {
+ frg_pl_size = pl_size_left;
+ untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST);
+ }
+ d_printf(5, NULL,
+ "ITR PL: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
+ pl_size_left, buf_itr - wtx->buf, frg_pl_size);
+ untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0);
+ untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size);
+ untd_hdr_rst->padding = 0;
+ if (buf_itr + frg_pl_size - wtx->buf
+ > wtx->buf_size) {
+ printk(KERN_ERR "BUG: no space for payload\n");
+ goto error_bug;
+ }
+ memcpy(buf_itr, pl_itr, frg_pl_size);
+ buf_itr += frg_pl_size;
+ pl_itr += frg_pl_size;
+ pl_size_left -= frg_pl_size;
+ d_printf(5, NULL,
+ "ITR PL 2: pl_size_left %zu buf_itr %zu frg_pl_size %zu\n",
+ pl_size_left, buf_itr - wtx->buf, frg_pl_size);
+ }
+ dev_kfree_skb_irq(skb);
+ return 0;
+
+error_bug:
+ printk(KERN_ERR
+ "BUG: skb %u bytes\n"
+ "BUG: frg_pl_size %zd i1480u_MAX_FRG_SIZE %u\n"
+ "BUG: buf_itr %zu buf_size %zu pl_size_left %zu\n",
+ skb->len,
+ frg_pl_size, i1480u_MAX_FRG_SIZE,
+ buf_itr - wtx->buf, wtx->buf_size, pl_size_left);
+
+ kfree(wtx->buf);
+error_buf_alloc:
+ return result;
+}
+
+
+/**
+ * Given a buffer that fits in a single fragment, fill out a @wtx
+ * struct for transmitting it down the USB pipe.
+ *
+ * Uses the fact that we have space reserved in front of the skbuff
+ * for hardware headers :]
+ *
+ * This does not fill the i1480 TX header, it is left up to the
+ * caller to do that; you can get it from @wtx->wlp_tx_hdr.
+ *
+ * @pl: pointer to payload data
+ * @pl_size: size of the payuload
+ *
+ * This function does not consume the @skb.
+ */
+static
+int i1480u_tx_create_1(struct i1480u_tx *wtx, struct sk_buff *skb,
+ gfp_t gfp_mask)
+{
+ struct untd_hdr_cmp *untd_hdr_cmp;
+ struct wlp_tx_hdr *wlp_tx_hdr;
+
+ wtx->buf = NULL;
+ wtx->skb = skb;
+ BUG_ON(skb_headroom(skb) < sizeof(*wlp_tx_hdr));
+ wlp_tx_hdr = (void *) __skb_push(skb, sizeof(*wlp_tx_hdr));
+ wtx->wlp_tx_hdr = wlp_tx_hdr;
+ BUG_ON(skb_headroom(skb) < sizeof(*untd_hdr_cmp));
+ untd_hdr_cmp = (void *) __skb_push(skb, sizeof(*untd_hdr_cmp));
+
+ untd_hdr_set_type(&untd_hdr_cmp->hdr, i1480u_PKT_FRAG_CMP);
+ untd_hdr_set_rx_tx(&untd_hdr_cmp->hdr, 0);
+ untd_hdr_cmp->hdr.len = cpu_to_le16(skb->len - sizeof(*untd_hdr_cmp));
+ untd_hdr_cmp->padding = 0;
+ return 0;
+}
+
+
+/**
+ * Given a skb to transmit, massage it to become palatable for the TX pipe
+ *
+ * This will break the buffer in chunks smaller than
+ * i1480u_MAX_FRG_SIZE and add proper headers to each.
+ *
+ * 1st header \
+ * i1480 tx header | fragment 1
+ * fragment data /
+ * nxt header \ fragment 2
+ * fragment data /
+ * ..
+ * ..
+ * last header \ fragment 3
+ * last fragment data /
+ *
+ * Each fragment will be always smaller or equal to i1480u_MAX_FRG_SIZE.
+ *
+ * If the first fragment is smaller than i1480u_MAX_FRG_SIZE, then the
+ * following is composed:
+ *
+ * complete header \
+ * i1480 tx header | single fragment
+ * packet data /
+ *
+ * We were going to use s/g support, but because the interface is
+ * synch and at the end there is plenty of overhead to do it, it
+ * didn't seem that worth for data that is going to be smaller than
+ * one page.
+ */
+static
+struct i1480u_tx *i1480u_tx_create(struct i1480u *i1480u,
+ struct sk_buff *skb, gfp_t gfp_mask)
+{
+ int result;
+ struct usb_endpoint_descriptor *epd;
+ int usb_pipe;
+ unsigned long flags;
+
+ struct i1480u_tx *wtx;
+ const size_t pl_max_size =
+ i1480u_MAX_FRG_SIZE - sizeof(struct untd_hdr_cmp)
+ - sizeof(struct wlp_tx_hdr);
+
+ wtx = kmalloc(sizeof(*wtx), gfp_mask);
+ if (wtx == NULL)
+ goto error_wtx_alloc;
+ wtx->urb = usb_alloc_urb(0, gfp_mask);
+ if (wtx->urb == NULL)
+ goto error_urb_alloc;
+ epd = &i1480u->usb_iface->cur_altsetting->endpoint[2].desc;
+ usb_pipe = usb_sndbulkpipe(i1480u->usb_dev, epd->bEndpointAddress);
+ /* Fits in a single complete packet or need to split? */
+ if (skb->len > pl_max_size) {
+ result = i1480u_tx_create_n(wtx, skb, gfp_mask);
+ if (result < 0)
+ goto error_create;
+ usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
+ wtx->buf, wtx->buf_size, i1480u_tx_cb, wtx);
+ } else {
+ result = i1480u_tx_create_1(wtx, skb, gfp_mask);
+ if (result < 0)
+ goto error_create;
+ usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
+ skb->data, skb->len, i1480u_tx_cb, wtx);
+ }
+ spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+ list_add(&wtx->list_node, &i1480u->tx_list);
+ spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+ return wtx;
+
+error_create:
+ kfree(wtx->urb);
+error_urb_alloc:
+ kfree(wtx);
+error_wtx_alloc:
+ return NULL;
+}
+
+/**
+ * Actual fragmentation and transmission of frame
+ *
+ * @wlp: WLP substack data structure
+ * @skb: To be transmitted
+ * @dst: Device address of destination
+ * @returns: 0 on success, <0 on failure
+ *
+ * This function can also be called directly (not just from
+ * hard_start_xmit), so we also check here if the interface is up before
+ * taking sending anything.
+ */
+int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct uwb_dev_addr *dst)
+{
+ int result = -ENXIO;
+ struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
+ struct device *dev = &i1480u->usb_iface->dev;
+ struct net_device *net_dev = i1480u->net_dev;
+ struct i1480u_tx *wtx;
+ struct wlp_tx_hdr *wlp_tx_hdr;
+ static unsigned char dev_bcast[2] = { 0xff, 0xff };
+#if 0
+ int lockup = 50;
+#endif
+
+ d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
+ net_dev);
+ BUG_ON(i1480u->wlp.rc == NULL);
+ if ((net_dev->flags & IFF_UP) == 0)
+ goto out;
+ result = -EBUSY;
+ if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) {
+ if (d_test(2) && printk_ratelimit())
+ d_printf(2, dev, "Max frames in flight "
+ "stopping queue.\n");
+ netif_stop_queue(net_dev);
+ goto error_max_inflight;
+ }
+ result = -ENOMEM;
+ wtx = i1480u_tx_create(i1480u, skb, GFP_ATOMIC);
+ if (unlikely(wtx == NULL)) {
+ if (printk_ratelimit())
+ dev_err(dev, "TX: no memory for WLP TX URB,"
+ "dropping packet (in flight %d)\n",
+ atomic_read(&i1480u->tx_inflight.count));
+ netif_stop_queue(net_dev);
+ goto error_wtx_alloc;
+ }
+ wtx->i1480u = i1480u;
+ /* Fill out the i1480 header; @i1480u->def_tx_hdr read without
+ * locking. We do so because they are kind of orthogonal to
+ * each other (and thus not changed in an atomic batch).
+ * The ETH header is right after the WLP TX header. */
+ wlp_tx_hdr = wtx->wlp_tx_hdr;
+ *wlp_tx_hdr = i1480u->options.def_tx_hdr;
+ wlp_tx_hdr->dstaddr = *dst;
+ if (!memcmp(&wlp_tx_hdr->dstaddr, dev_bcast, sizeof(dev_bcast))
+ && (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)) {
+ /*Broadcast message directed to DRP host. Send as best effort
+ * on PCA. */
+ wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority);
+ }
+
+#if 0
+ dev_info(dev, "TX delivering skb -> USB, %zu bytes\n", skb->len);
+ dump_bytes(dev, skb->data, skb->len > 72 ? 72 : skb->len);
+#endif
+#if 0
+ /* simulates a device lockup after every lockup# packets */
+ if (lockup && ((i1480u->stats.tx_packets + 1) % lockup) == 0) {
+ /* Simulate a dropped transmit interrupt */
+ net_dev->trans_start = jiffies;
+ netif_stop_queue(net_dev);
+ dev_err(dev, "Simulate lockup at %ld\n", jiffies);
+ return result;
+ }
+#endif
+
+ result = usb_submit_urb(wtx->urb, GFP_ATOMIC); /* Go baby */
+ if (result < 0) {
+ dev_err(dev, "TX: cannot submit URB: %d\n", result);
+ /* We leave the freeing of skb to calling function */
+ wtx->skb = NULL;
+ goto error_tx_urb_submit;
+ }
+ atomic_inc(&i1480u->tx_inflight.count);
+ net_dev->trans_start = jiffies;
+ d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+ net_dev, result);
+ return result;
+
+error_tx_urb_submit:
+ i1480u_tx_destroy(i1480u, wtx);
+error_wtx_alloc:
+error_max_inflight:
+out:
+ d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+ net_dev, result);
+ return result;
+}
+
+
+/**
+ * Transmit an skb Called when an skbuf has to be transmitted
+ *
+ * The skb is first passed to WLP substack to ensure this is a valid
+ * frame. If valid the device address of destination will be filled and
+ * the WLP header prepended to the skb. If this step fails we fake sending
+ * the frame, if we return an error the network stack will just keep trying.
+ *
+ * Broadcast frames inside a WSS needs to be treated special as multicast is
+ * not supported. A broadcast frame is sent as unicast to each member of the
+ * WSS - this is done by the WLP substack when it finds a broadcast frame.
+ * So, we test if the WLP substack took over the skb and only transmit it
+ * if it has not (been taken over).
+ *
+ * @net_dev->xmit_lock is held
+ */
+int i1480u_hard_start_xmit(struct sk_buff *skb, struct net_device *net_dev)
+{
+ int result;
+ struct i1480u *i1480u = netdev_priv(net_dev);
+ struct device *dev = &i1480u->usb_iface->dev;
+ struct uwb_dev_addr dst;
+
+ d_fnstart(6, dev, "(skb %p (%u), net_dev %p)\n", skb, skb->len,
+ net_dev);
+ BUG_ON(i1480u->wlp.rc == NULL);
+ if ((net_dev->flags & IFF_UP) == 0)
+ goto error;
+ result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst);
+ if (result < 0) {
+ dev_err(dev, "WLP verification of TX frame failed (%d). "
+ "Dropping packet.\n", result);
+ goto error;
+ } else if (result == 1) {
+ d_printf(6, dev, "WLP will transmit frame. \n");
+ /* trans_start time will be set when WLP actually transmits
+ * the frame */
+ goto out;
+ }
+ d_printf(6, dev, "Transmitting frame. \n");
+ result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst);
+ if (result < 0) {
+ dev_err(dev, "Frame TX failed (%d).\n", result);
+ goto error;
+ }
+ d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+ net_dev, result);
+ return NETDEV_TX_OK;
+error:
+ dev_kfree_skb_any(skb);
+ i1480u->stats.tx_dropped++;
+out:
+ d_fnend(6, dev, "(skb %p (%u), net_dev %p) = %d\n", skb, skb->len,
+ net_dev, result);
+ return NETDEV_TX_OK;
+}
+
+
+/**
+ * Called when a pkt transmission doesn't complete in a reasonable period
+ * Device reset may sleep - do it outside of interrupt context (delayed)
+ */
+void i1480u_tx_timeout(struct net_device *net_dev)
+{
+ struct i1480u *i1480u = netdev_priv(net_dev);
+
+ wlp_reset_all(&i1480u->wlp);
+}
+
+
+void i1480u_tx_release(struct i1480u *i1480u)
+{
+ unsigned long flags;
+ struct i1480u_tx *wtx, *next;
+ int count = 0, empty;
+
+ spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+ list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
+ count++;
+ usb_unlink_urb(wtx->urb);
+ }
+ spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+ count = count*10; /* i1480ut 200ms per unlinked urb (intervals of 20ms) */
+ /*
+ * We don't like this sollution too much (dirty as it is), but
+ * it is cheaper than putting a refcount on each i1480u_tx and
+ * i1480uting for all of them to go away...
+ *
+ * Called when no more packets can be added to tx_list
+ * so can i1480ut for it to be empty.
+ */
+ while (1) {
+ spin_lock_irqsave(&i1480u->tx_list_lock, flags);
+ empty = list_empty(&i1480u->tx_list);
+ spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
+ if (empty)
+ break;
+ count--;
+ BUG_ON(count == 0);
+ msleep(20);
+ }
+}
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Information Element Handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * uwb_ie_next - get the next IE in a buffer
+ * @ptr: start of the buffer containing the IE data
+ * @len: length of the buffer
+ *
+ * Both @ptr and @len are updated so subsequent calls to uwb_ie_next()
+ * will get the next IE.
+ *
+ * NULL is returned (and @ptr and @len will not be updated) if there
+ * are no more IEs in the buffer or the buffer is too short.
+ */
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len)
+{
+ struct uwb_ie_hdr *hdr;
+ size_t ie_len;
+
+ if (*len < sizeof(struct uwb_ie_hdr))
+ return NULL;
+
+ hdr = *ptr;
+ ie_len = sizeof(struct uwb_ie_hdr) + hdr->length;
+
+ if (*len < ie_len)
+ return NULL;
+
+ *ptr += ie_len;
+ *len -= ie_len;
+
+ return hdr;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_next);
+
+/**
+ * Get the IEs that a radio controller is sending in its beacon
+ *
+ * @uwb_rc: UWB Radio Controller
+ * @returns: Size read from the system
+ *
+ * We don't need to lock the uwb_rc's mutex because we don't modify
+ * anything. Once done with the iedata buffer, call
+ * uwb_rc_ie_release(iedata). Don't call kfree on it.
+ */
+ssize_t uwb_rc_get_ie(struct uwb_rc *uwb_rc, struct uwb_rc_evt_get_ie **pget_ie)
+{
+ ssize_t result;
+ struct device *dev = &uwb_rc->uwb_dev.dev;
+ struct uwb_rccb *cmd = NULL;
+ struct uwb_rceb *reply = NULL;
+ struct uwb_rc_evt_get_ie *get_ie;
+
+ d_fnstart(3, dev, "(%p, %p)\n", uwb_rc, pget_ie);
+ result = -ENOMEM;
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ goto error_kzalloc;
+ cmd->bCommandType = UWB_RC_CET_GENERAL;
+ cmd->wCommand = cpu_to_le16(UWB_RC_CMD_GET_IE);
+ result = uwb_rc_vcmd(uwb_rc, "GET_IE", cmd, sizeof(*cmd),
+ UWB_RC_CET_GENERAL, UWB_RC_CMD_GET_IE,
+ &reply);
+ if (result < 0)
+ goto error_cmd;
+ get_ie = container_of(reply, struct uwb_rc_evt_get_ie, rceb);
+ if (result < sizeof(*get_ie)) {
+ dev_err(dev, "not enough data returned for decoding GET IE "
+ "(%zu bytes received vs %zu needed)\n",
+ result, sizeof(*get_ie));
+ result = -EINVAL;
+ } else if (result < sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength)) {
+ dev_err(dev, "not enough data returned for decoding GET IE "
+ "payload (%zu bytes received vs %zu needed)\n", result,
+ sizeof(*get_ie) + le16_to_cpu(get_ie->wIELength));
+ result = -EINVAL;
+ } else
+ *pget_ie = get_ie;
+error_cmd:
+ kfree(cmd);
+error_kzalloc:
+ d_fnend(3, dev, "(%p, %p) = %d\n", uwb_rc, pget_ie, (int)result);
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_ie);
+
+
+/*
+ * Given a pointer to an IE, print it in ASCII/hex followed by a new line
+ *
+ * @ie_hdr: pointer to the IE header. Length is in there, and it is
+ * guaranteed that the ie_hdr->length bytes following it are
+ * safely accesible.
+ *
+ * @_data: context data passed from uwb_ie_for_each(), an struct output_ctx
+ */
+int uwb_ie_dump_hex(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
+ size_t offset, void *_ctx)
+{
+ struct uwb_buf_ctx *ctx = _ctx;
+ const u8 *pl = (void *)(ie_hdr + 1);
+ u8 pl_itr;
+
+ ctx->bytes += scnprintf(ctx->buf + ctx->bytes, ctx->size - ctx->bytes,
+ "%02x %02x ", (unsigned) ie_hdr->element_id,
+ (unsigned) ie_hdr->length);
+ pl_itr = 0;
+ while (pl_itr < ie_hdr->length && ctx->bytes < ctx->size)
+ ctx->bytes += scnprintf(ctx->buf + ctx->bytes,
+ ctx->size - ctx->bytes,
+ "%02x ", (unsigned) pl[pl_itr++]);
+ if (ctx->bytes < ctx->size)
+ ctx->buf[ctx->bytes++] = '\n';
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_dump_hex);
+
+
+/**
+ * Verify that a pointer in a buffer points to valid IE
+ *
+ * @start: pointer to start of buffer in which IE appears
+ * @itr: pointer to IE inside buffer that will be verified
+ * @top: pointer to end of buffer
+ *
+ * @returns: 0 if IE is valid, <0 otherwise
+ *
+ * Verification involves checking that the buffer can contain a
+ * header and the amount of data reported in the IE header can be found in
+ * the buffer.
+ */
+static
+int uwb_rc_ie_verify(struct uwb_dev *uwb_dev, const void *start,
+ const void *itr, const void *top)
+{
+ struct device *dev = &uwb_dev->dev;
+ const struct uwb_ie_hdr *ie_hdr;
+
+ if (top - itr < sizeof(*ie_hdr)) {
+ dev_err(dev, "Bad IE: no data to decode header "
+ "(%zu bytes left vs %zu needed) at offset %zu\n",
+ top - itr, sizeof(*ie_hdr), itr - start);
+ return -EINVAL;
+ }
+ ie_hdr = itr;
+ itr += sizeof(*ie_hdr);
+ if (top - itr < ie_hdr->length) {
+ dev_err(dev, "Bad IE: not enough data for payload "
+ "(%zu bytes left vs %zu needed) at offset %zu\n",
+ top - itr, (size_t)ie_hdr->length,
+ (void *)ie_hdr - start);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+
+/**
+ * Walk a buffer filled with consecutive IE's a buffer
+ *
+ * @uwb_dev: UWB device this IEs belong to (for err messages mainly)
+ *
+ * @fn: function to call with each IE; if it returns 0, we keep
+ * traversing the buffer. If it returns !0, we'll stop and return
+ * that value.
+ *
+ * @data: pointer passed to @fn
+ *
+ * @buf: buffer where the consecutive IEs are located
+ *
+ * @size: size of @buf
+ *
+ * Each IE is checked for basic correctness (there is space left for
+ * the header and the payload). If that test is failed, we stop
+ * processing. For every good IE, @fn is called.
+ */
+ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
+ const void *buf, size_t size)
+{
+ ssize_t result = 0;
+ const struct uwb_ie_hdr *ie_hdr;
+ const void *itr = buf, *top = itr + size;
+
+ while (itr < top) {
+ if (uwb_rc_ie_verify(uwb_dev, buf, itr, top) != 0)
+ break;
+ ie_hdr = itr;
+ itr += sizeof(*ie_hdr) + ie_hdr->length;
+ result = fn(uwb_dev, ie_hdr, itr - buf, data);
+ if (result != 0)
+ break;
+ }
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_ie_for_each);
+
+
+/**
+ * Replace all IEs currently being transmitted by a device
+ *
+ * @cmd: pointer to the SET-IE command with the IEs to set
+ * @size: size of @buf
+ */
+int uwb_rc_set_ie(struct uwb_rc *rc, struct uwb_rc_cmd_set_ie *cmd)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_evt_set_ie reply;
+
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_SET_IE;
+ result = uwb_rc_cmd(rc, "SET-IE", &cmd->rccb,
+ sizeof(*cmd) + le16_to_cpu(cmd->wIELength),
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ else if (result != sizeof(reply)) {
+ dev_err(dev, "SET-IE: not enough data to decode reply "
+ "(%d bytes received vs %zu needed)\n",
+ result, sizeof(reply));
+ result = -EIO;
+ } else if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(dev, "SET-IE: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+ result = -EIO;
+ } else
+ result = 0;
+error_cmd:
+ return result;
+}
+
+/**
+ * Determine by IE id if IE is host settable
+ * WUSB 1.0 [8.6.2.8 Table 8.85]
+ *
+ * EXCEPTION:
+ * All but UWB_IE_WLP appears in Table 8.85 from WUSB 1.0. Setting this IE
+ * is required for the WLP substack to perform association with its WSS so
+ * we hope that the WUSB spec will be changed to reflect this.
+ */
+static
+int uwb_rc_ie_is_host_settable(enum uwb_ie element_id)
+{
+ if (element_id == UWB_PCA_AVAILABILITY ||
+ element_id == UWB_BP_SWITCH_IE ||
+ element_id == UWB_MAC_CAPABILITIES_IE ||
+ element_id == UWB_PHY_CAPABILITIES_IE ||
+ element_id == UWB_APP_SPEC_PROBE_IE ||
+ element_id == UWB_IDENTIFICATION_IE ||
+ element_id == UWB_MASTER_KEY_ID_IE ||
+ element_id == UWB_IE_WLP ||
+ element_id == UWB_APP_SPEC_IE)
+ return 1;
+ return 0;
+}
+
+
+/**
+ * Extract Host Settable IEs from IE
+ *
+ * @ie_data: pointer to buffer containing all IEs
+ * @size: size of buffer
+ *
+ * @returns: length of buffer that only includes host settable IEs
+ *
+ * Given a buffer of IEs we move all Host Settable IEs to front of buffer
+ * by overwriting the IEs that are not Host Settable.
+ * Buffer length is adjusted accordingly.
+ */
+static
+ssize_t uwb_rc_parse_host_settable_ie(struct uwb_dev *uwb_dev,
+ void *ie_data, size_t size)
+{
+ size_t new_len = size;
+ struct uwb_ie_hdr *ie_hdr;
+ size_t ie_length;
+ void *itr = ie_data, *top = itr + size;
+
+ while (itr < top) {
+ if (uwb_rc_ie_verify(uwb_dev, ie_data, itr, top) != 0)
+ break;
+ ie_hdr = itr;
+ ie_length = sizeof(*ie_hdr) + ie_hdr->length;
+ if (uwb_rc_ie_is_host_settable(ie_hdr->element_id)) {
+ itr += ie_length;
+ } else {
+ memmove(itr, itr + ie_length, top - (itr + ie_length));
+ new_len -= ie_length;
+ top -= ie_length;
+ }
+ }
+ return new_len;
+}
+
+
+/* Cleanup the whole IE management subsystem */
+void uwb_rc_ie_init(struct uwb_rc *uwb_rc)
+{
+ mutex_init(&uwb_rc->ies_mutex);
+}
+
+
+/**
+ * Set up cache for host settable IEs currently being transmitted
+ *
+ * First we just call GET-IE to get the current IEs being transmitted
+ * (or we workaround and pretend we did) and (because the format is
+ * the same) reuse that as the IE cache (with the command prefix, as
+ * explained in 'struct uwb_rc').
+ *
+ * @returns: size of cache created
+ */
+ssize_t uwb_rc_ie_setup(struct uwb_rc *uwb_rc)
+{
+ struct device *dev = &uwb_rc->uwb_dev.dev;
+ ssize_t result;
+ size_t capacity;
+ struct uwb_rc_evt_get_ie *ie_info;
+
+ d_fnstart(3, dev, "(%p)\n", uwb_rc);
+ mutex_lock(&uwb_rc->ies_mutex);
+ result = uwb_rc_get_ie(uwb_rc, &ie_info);
+ if (result < 0)
+ goto error_get_ie;
+ capacity = result;
+ d_printf(5, dev, "Got IEs %zu bytes (%zu long at %p)\n", result,
+ (size_t)le16_to_cpu(ie_info->wIELength), ie_info);
+
+ /* Remove IEs that host should not set. */
+ result = uwb_rc_parse_host_settable_ie(&uwb_rc->uwb_dev,
+ ie_info->IEData, le16_to_cpu(ie_info->wIELength));
+ if (result < 0)
+ goto error_parse;
+ d_printf(5, dev, "purged non-settable IEs to %zu bytes\n", result);
+ uwb_rc->ies = (void *) ie_info;
+ uwb_rc->ies->rccb.bCommandType = UWB_RC_CET_GENERAL;
+ uwb_rc->ies->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SET_IE);
+ uwb_rc->ies_capacity = capacity;
+ d_printf(5, dev, "IE cache at %p %zu bytes, %zu capacity\n",
+ ie_info, result, capacity);
+ result = 0;
+error_parse:
+error_get_ie:
+ mutex_unlock(&uwb_rc->ies_mutex);
+ d_fnend(3, dev, "(%p) = %zu\n", uwb_rc, result);
+ return result;
+}
+
+
+/* Cleanup the whole IE management subsystem */
+void uwb_rc_ie_release(struct uwb_rc *uwb_rc)
+{
+ kfree(uwb_rc->ies);
+ uwb_rc->ies = NULL;
+ uwb_rc->ies_capacity = 0;
+}
+
+
+static
+int __acc_size(struct uwb_dev *uwb_dev, const struct uwb_ie_hdr *ie_hdr,
+ size_t offset, void *_ctx)
+{
+ size_t *acc_size = _ctx;
+ *acc_size += sizeof(*ie_hdr) + ie_hdr->length;
+ d_printf(6, &uwb_dev->dev, "new acc size %zu\n", *acc_size);
+ return 0;
+}
+
+
+/**
+ * Add a new IE to IEs currently being transmitted by device
+ *
+ * @ies: the buffer containing the new IE or IEs to be added to
+ * the device's beacon. The buffer will be verified for
+ * consistence (meaning the headers should be right) and
+ * consistent with the buffer size.
+ * @size: size of @ies (in bytes, total buffer size)
+ * @returns: 0 if ok, <0 errno code on error
+ *
+ * According to WHCI 0.95 [4.13.6] the driver will only receive the RCEB
+ * after the device sent the first beacon that includes the IEs specified
+ * in the SET IE command. We thus cannot send this command if the device is
+ * not beaconing. Instead, a SET IE command will be sent later right after
+ * we start beaconing.
+ *
+ * Setting an IE on the device will overwrite all current IEs in device. So
+ * we take the current IEs being transmitted by the device, append the
+ * new one, and call SET IE with all the IEs needed.
+ *
+ * The local IE cache will only be updated with the new IE if SET IE
+ * completed successfully.
+ */
+int uwb_rc_ie_add(struct uwb_rc *uwb_rc,
+ const struct uwb_ie_hdr *ies, size_t size)
+{
+ int result = 0;
+ struct device *dev = &uwb_rc->uwb_dev.dev;
+ struct uwb_rc_cmd_set_ie *new_ies;
+ size_t ies_size, total_size, acc_size = 0;
+
+ if (uwb_rc->ies == NULL)
+ return -ESHUTDOWN;
+ uwb_ie_for_each(&uwb_rc->uwb_dev, __acc_size, &acc_size, ies, size);
+ if (acc_size != size) {
+ dev_err(dev, "BUG: bad IEs, misconstructed headers "
+ "[%zu bytes reported vs %zu calculated]\n",
+ size, acc_size);
+ WARN_ON(1);
+ return -EINVAL;
+ }
+ mutex_lock(&uwb_rc->ies_mutex);
+ ies_size = le16_to_cpu(uwb_rc->ies->wIELength);
+ total_size = sizeof(*uwb_rc->ies) + ies_size;
+ if (total_size + size > uwb_rc->ies_capacity) {
+ d_printf(4, dev, "Reallocating IE cache from %p capacity %zu "
+ "to capacity %zu\n", uwb_rc->ies, uwb_rc->ies_capacity,
+ total_size + size);
+ new_ies = kzalloc(total_size + size, GFP_KERNEL);
+ if (new_ies == NULL) {
+ dev_err(dev, "No memory for adding new IE\n");
+ result = -ENOMEM;
+ goto error_alloc;
+ }
+ memcpy(new_ies, uwb_rc->ies, total_size);
+ uwb_rc->ies_capacity = total_size + size;
+ kfree(uwb_rc->ies);
+ uwb_rc->ies = new_ies;
+ d_printf(4, dev, "New IE cache at %p capacity %zu\n",
+ uwb_rc->ies, uwb_rc->ies_capacity);
+ }
+ memcpy((void *)uwb_rc->ies + total_size, ies, size);
+ uwb_rc->ies->wIELength = cpu_to_le16(ies_size + size);
+ if (uwb_rc->beaconing != -1) {
+ result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
+ if (result < 0) {
+ dev_err(dev, "Cannot set new IE on device: %d\n",
+ result);
+ uwb_rc->ies->wIELength = cpu_to_le16(ies_size);
+ } else
+ result = 0;
+ }
+ d_printf(4, dev, "IEs now occupy %hu bytes of %zu capacity at %p\n",
+ le16_to_cpu(uwb_rc->ies->wIELength), uwb_rc->ies_capacity,
+ uwb_rc->ies);
+error_alloc:
+ mutex_unlock(&uwb_rc->ies_mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_ie_add);
+
+
+/*
+ * Remove an IE from internal cache
+ *
+ * We are dealing with our internal IE cache so no need to verify that the
+ * IEs are valid (it has been done already).
+ *
+ * Should be called with ies_mutex held
+ *
+ * We do not break out once an IE is found in the cache. It is currently
+ * possible to have more than one IE with the same ID included in the
+ * beacon. We don't reallocate, we just mark the size smaller.
+ */
+static
+int uwb_rc_ie_cache_rm(struct uwb_rc *uwb_rc, enum uwb_ie to_remove)
+{
+ struct uwb_ie_hdr *ie_hdr;
+ size_t new_len = le16_to_cpu(uwb_rc->ies->wIELength);
+ void *itr = uwb_rc->ies->IEData;
+ void *top = itr + new_len;
+
+ while (itr < top) {
+ ie_hdr = itr;
+ if (ie_hdr->element_id != to_remove) {
+ itr += sizeof(*ie_hdr) + ie_hdr->length;
+ } else {
+ int ie_length;
+ ie_length = sizeof(*ie_hdr) + ie_hdr->length;
+ if (top - itr != ie_length)
+ memmove(itr, itr + ie_length, top - itr + ie_length);
+ top -= ie_length;
+ new_len -= ie_length;
+ }
+ }
+ uwb_rc->ies->wIELength = cpu_to_le16(new_len);
+ return 0;
+}
+
+
+/**
+ * Remove an IE currently being transmitted by device
+ *
+ * @element_id: id of IE to be removed from device's beacon
+ */
+int uwb_rc_ie_rm(struct uwb_rc *uwb_rc, enum uwb_ie element_id)
+{
+ struct device *dev = &uwb_rc->uwb_dev.dev;
+ int result;
+
+ if (uwb_rc->ies == NULL)
+ return -ESHUTDOWN;
+ mutex_lock(&uwb_rc->ies_mutex);
+ result = uwb_rc_ie_cache_rm(uwb_rc, element_id);
+ if (result < 0)
+ dev_err(dev, "Cannot remove IE from cache.\n");
+ if (uwb_rc->beaconing != -1) {
+ result = uwb_rc_set_ie(uwb_rc, uwb_rc->ies);
+ if (result < 0)
+ dev_err(dev, "Cannot set new IE on device.\n");
+ }
+ mutex_unlock(&uwb_rc->ies_mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_ie_rm);
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Life cycle of devices
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/kdev_t.h>
+#include <linux/random.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+
+/* We initialize addresses to 0xff (invalid, as it is bcast) */
+static inline void uwb_dev_addr_init(struct uwb_dev_addr *addr)
+{
+ memset(&addr->data, 0xff, sizeof(addr->data));
+}
+
+static inline void uwb_mac_addr_init(struct uwb_mac_addr *addr)
+{
+ memset(&addr->data, 0xff, sizeof(addr->data));
+}
+
+/* @returns !0 if a device @addr is a broadcast address */
+static inline int uwb_dev_addr_bcast(const struct uwb_dev_addr *addr)
+{
+ static const struct uwb_dev_addr bcast = { .data = { 0xff, 0xff } };
+ return !uwb_dev_addr_cmp(addr, &bcast);
+}
+
+/*
+ * Add callback @new to be called when an event occurs in @rc.
+ */
+int uwb_notifs_register(struct uwb_rc *rc, struct uwb_notifs_handler *new)
+{
+ if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+ return -ERESTARTSYS;
+ list_add(&new->list_node, &rc->notifs_chain.list);
+ mutex_unlock(&rc->notifs_chain.mutex);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_notifs_register);
+
+/*
+ * Remove event handler (callback)
+ */
+int uwb_notifs_deregister(struct uwb_rc *rc, struct uwb_notifs_handler *entry)
+{
+ if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+ return -ERESTARTSYS;
+ list_del(&entry->list_node);
+ mutex_unlock(&rc->notifs_chain.mutex);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_notifs_deregister);
+
+/*
+ * Notify all event handlers of a given event on @rc
+ *
+ * We are called with a valid reference to the device, or NULL if the
+ * event is not for a particular event (e.g., a BG join event).
+ */
+void uwb_notify(struct uwb_rc *rc, struct uwb_dev *uwb_dev, enum uwb_notifs event)
+{
+ struct uwb_notifs_handler *handler;
+ if (mutex_lock_interruptible(&rc->notifs_chain.mutex))
+ return;
+ if (!list_empty(&rc->notifs_chain.list)) {
+ list_for_each_entry(handler, &rc->notifs_chain.list, list_node) {
+ handler->cb(handler->data, uwb_dev, event);
+ }
+ }
+ mutex_unlock(&rc->notifs_chain.mutex);
+}
+
+/*
+ * Release the backing device of a uwb_dev that has been dynamically allocated.
+ */
+static void uwb_dev_sys_release(struct device *dev)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+ d_fnstart(4, NULL, "(dev %p uwb_dev %p)\n", dev, uwb_dev);
+ uwb_bce_put(uwb_dev->bce);
+ d_printf(0, &uwb_dev->dev, "uwb_dev %p freed\n", uwb_dev);
+ memset(uwb_dev, 0x69, sizeof(*uwb_dev));
+ kfree(uwb_dev);
+ d_fnend(4, NULL, "(dev %p uwb_dev %p) = void\n", dev, uwb_dev);
+}
+
+/*
+ * Initialize a UWB device instance
+ *
+ * Alloc, zero and call this function.
+ */
+void uwb_dev_init(struct uwb_dev *uwb_dev)
+{
+ mutex_init(&uwb_dev->mutex);
+ device_initialize(&uwb_dev->dev);
+ uwb_dev->dev.release = uwb_dev_sys_release;
+ uwb_dev_addr_init(&uwb_dev->dev_addr);
+ uwb_mac_addr_init(&uwb_dev->mac_addr);
+ bitmap_fill(uwb_dev->streams, UWB_NUM_GLOBAL_STREAMS);
+}
+
+static ssize_t uwb_dev_EUI_48_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ char addr[UWB_ADDR_STRSIZE];
+
+ uwb_mac_addr_print(addr, sizeof(addr), &uwb_dev->mac_addr);
+ return sprintf(buf, "%s\n", addr);
+}
+static DEVICE_ATTR(EUI_48, S_IRUGO, uwb_dev_EUI_48_show, NULL);
+
+static ssize_t uwb_dev_DevAddr_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ char addr[UWB_ADDR_STRSIZE];
+
+ uwb_dev_addr_print(addr, sizeof(addr), &uwb_dev->dev_addr);
+ return sprintf(buf, "%s\n", addr);
+}
+static DEVICE_ATTR(DevAddr, S_IRUGO, uwb_dev_DevAddr_show, NULL);
+
+/*
+ * Show the BPST of this device.
+ *
+ * Calculated from the receive time of the device's beacon and it's
+ * slot number.
+ */
+static ssize_t uwb_dev_BPST_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_beca_e *bce;
+ struct uwb_beacon_frame *bf;
+ u16 bpst;
+
+ bce = uwb_dev->bce;
+ mutex_lock(&bce->mutex);
+ bf = (struct uwb_beacon_frame *)bce->be->BeaconInfo;
+ bpst = bce->be->wBPSTOffset
+ - (u16)(bf->Beacon_Slot_Number * UWB_BEACON_SLOT_LENGTH_US);
+ mutex_unlock(&bce->mutex);
+
+ return sprintf(buf, "%d\n", bpst);
+}
+static DEVICE_ATTR(BPST, S_IRUGO, uwb_dev_BPST_show, NULL);
+
+/*
+ * Show the IEs a device is beaconing
+ *
+ * We need to access the beacon cache, so we just lock it really
+ * quick, print the IEs and unlock.
+ *
+ * We have a reference on the cache entry, so that should be
+ * quite safe.
+ */
+static ssize_t uwb_dev_IEs_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+ return uwb_bce_print_IEs(uwb_dev, uwb_dev->bce, buf, PAGE_SIZE);
+}
+static DEVICE_ATTR(IEs, S_IRUGO | S_IWUSR, uwb_dev_IEs_show, NULL);
+
+static ssize_t uwb_dev_LQE_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_beca_e *bce = uwb_dev->bce;
+ size_t result;
+
+ mutex_lock(&bce->mutex);
+ result = stats_show(&uwb_dev->bce->lqe_stats, buf);
+ mutex_unlock(&bce->mutex);
+ return result;
+}
+
+static ssize_t uwb_dev_LQE_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_beca_e *bce = uwb_dev->bce;
+ ssize_t result;
+
+ mutex_lock(&bce->mutex);
+ result = stats_store(&uwb_dev->bce->lqe_stats, buf, size);
+ mutex_unlock(&bce->mutex);
+ return result;
+}
+static DEVICE_ATTR(LQE, S_IRUGO | S_IWUSR, uwb_dev_LQE_show, uwb_dev_LQE_store);
+
+static ssize_t uwb_dev_RSSI_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_beca_e *bce = uwb_dev->bce;
+ size_t result;
+
+ mutex_lock(&bce->mutex);
+ result = stats_show(&uwb_dev->bce->rssi_stats, buf);
+ mutex_unlock(&bce->mutex);
+ return result;
+}
+
+static ssize_t uwb_dev_RSSI_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_beca_e *bce = uwb_dev->bce;
+ ssize_t result;
+
+ mutex_lock(&bce->mutex);
+ result = stats_store(&uwb_dev->bce->rssi_stats, buf, size);
+ mutex_unlock(&bce->mutex);
+ return result;
+}
+static DEVICE_ATTR(RSSI, S_IRUGO | S_IWUSR, uwb_dev_RSSI_show, uwb_dev_RSSI_store);
+
+
+static struct attribute *dev_attrs[] = {
+ &dev_attr_EUI_48.attr,
+ &dev_attr_DevAddr.attr,
+ &dev_attr_BPST.attr,
+ &dev_attr_IEs.attr,
+ &dev_attr_LQE.attr,
+ &dev_attr_RSSI.attr,
+ NULL,
+};
+
+static struct attribute_group dev_attr_group = {
+ .attrs = dev_attrs,
+};
+
+static struct attribute_group *groups[] = {
+ &dev_attr_group,
+ NULL,
+};
+
+/**
+ * Device SYSFS registration
+ *
+ *
+ */
+static int __uwb_dev_sys_add(struct uwb_dev *uwb_dev, struct device *parent_dev)
+{
+ int result;
+ struct device *dev;
+
+ d_fnstart(4, NULL, "(uwb_dev %p parent_dev %p)\n", uwb_dev, parent_dev);
+ BUG_ON(parent_dev == NULL);
+
+ dev = &uwb_dev->dev;
+ /* Device sysfs files are only useful for neighbor devices not
+ local radio controllers. */
+ if (&uwb_dev->rc->uwb_dev != uwb_dev)
+ dev->groups = groups;
+ dev->parent = parent_dev;
+ dev_set_drvdata(dev, uwb_dev);
+
+ result = device_add(dev);
+ d_fnend(4, NULL, "(uwb_dev %p parent_dev %p) = %d\n", uwb_dev, parent_dev, result);
+ return result;
+}
+
+
+static void __uwb_dev_sys_rm(struct uwb_dev *uwb_dev)
+{
+ d_fnstart(4, NULL, "(uwb_dev %p)\n", uwb_dev);
+ dev_set_drvdata(&uwb_dev->dev, NULL);
+ device_del(&uwb_dev->dev);
+ d_fnend(4, NULL, "(uwb_dev %p) = void\n", uwb_dev);
+}
+
+
+/**
+ * Register and initialize a new UWB device
+ *
+ * Did you call uwb_dev_init() on it?
+ *
+ * @parent_rc: is the parent radio controller who has the link to the
+ * device. When registering the UWB device that is a UWB
+ * Radio Controller, we point back to it.
+ *
+ * If registering the device that is part of a radio, caller has set
+ * rc->uwb_dev->dev. Otherwise it is to be left NULL--a new one will
+ * be allocated.
+ */
+int uwb_dev_add(struct uwb_dev *uwb_dev, struct device *parent_dev,
+ struct uwb_rc *parent_rc)
+{
+ int result;
+ struct device *dev;
+
+ BUG_ON(uwb_dev == NULL);
+ BUG_ON(parent_dev == NULL);
+ BUG_ON(parent_rc == NULL);
+
+ mutex_lock(&uwb_dev->mutex);
+ dev = &uwb_dev->dev;
+ uwb_dev->rc = parent_rc;
+ result = __uwb_dev_sys_add(uwb_dev, parent_dev);
+ if (result < 0)
+ printk(KERN_ERR "UWB: unable to register dev %s with sysfs: %d\n",
+ dev_name(dev), result);
+ mutex_unlock(&uwb_dev->mutex);
+ return result;
+}
+
+
+void uwb_dev_rm(struct uwb_dev *uwb_dev)
+{
+ mutex_lock(&uwb_dev->mutex);
+ __uwb_dev_sys_rm(uwb_dev);
+ mutex_unlock(&uwb_dev->mutex);
+}
+
+
+static
+int __uwb_dev_try_get(struct device *dev, void *__target_uwb_dev)
+{
+ struct uwb_dev *target_uwb_dev = __target_uwb_dev;
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ if (uwb_dev == target_uwb_dev) {
+ uwb_dev_get(uwb_dev);
+ return 1;
+ } else
+ return 0;
+}
+
+
+/**
+ * Given a UWB device descriptor, validate and refcount it
+ *
+ * @returns NULL if the device does not exist or is quiescing; the ptr to
+ * it otherwise.
+ */
+struct uwb_dev *uwb_dev_try_get(struct uwb_rc *rc, struct uwb_dev *uwb_dev)
+{
+ if (uwb_dev_for_each(rc, __uwb_dev_try_get, uwb_dev))
+ return uwb_dev;
+ else
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(uwb_dev_try_get);
+
+
+/**
+ * Remove a device from the system [grunt for other functions]
+ */
+int __uwb_dev_offair(struct uwb_dev *uwb_dev, struct uwb_rc *rc)
+{
+ struct device *dev = &uwb_dev->dev;
+ char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+ d_fnstart(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p)\n", dev, uwb_dev, rc);
+ uwb_mac_addr_print(macbuf, sizeof(macbuf), &uwb_dev->mac_addr);
+ uwb_dev_addr_print(devbuf, sizeof(devbuf), &uwb_dev->dev_addr);
+ dev_info(dev, "uwb device (mac %s dev %s) disconnected from %s %s\n",
+ macbuf, devbuf,
+ rc ? rc->uwb_dev.dev.parent->bus->name : "n/a",
+ rc ? dev_name(rc->uwb_dev.dev.parent) : "");
+ uwb_dev_rm(uwb_dev);
+ uwb_dev_put(uwb_dev); /* for the creation in _onair() */
+ d_fnend(3, NULL, "(dev %p [uwb_dev %p], uwb_rc %p) = 0\n", dev, uwb_dev, rc);
+ return 0;
+}
+
+
+/**
+ * A device went off the air, clean up after it!
+ *
+ * This is called by the UWB Daemon (through the beacon purge function
+ * uwb_bcn_cache_purge) when it is detected that a device has been in
+ * radio silence for a while.
+ *
+ * If this device is actually a local radio controller we don't need
+ * to go through the offair process, as it is not registered as that.
+ *
+ * NOTE: uwb_bcn_cache.mutex is held!
+ */
+void uwbd_dev_offair(struct uwb_beca_e *bce)
+{
+ struct uwb_dev *uwb_dev;
+
+ uwb_dev = bce->uwb_dev;
+ if (uwb_dev) {
+ uwb_notify(uwb_dev->rc, uwb_dev, UWB_NOTIF_OFFAIR);
+ __uwb_dev_offair(uwb_dev, uwb_dev->rc);
+ }
+}
+
+
+/**
+ * A device went on the air, start it up!
+ *
+ * This is called by the UWB Daemon when it is detected that a device
+ * has popped up in the radio range of the radio controller.
+ *
+ * It will just create the freaking device, register the beacon and
+ * stuff and yatla, done.
+ *
+ *
+ * NOTE: uwb_beca.mutex is held, bce->mutex is held
+ */
+void uwbd_dev_onair(struct uwb_rc *rc, struct uwb_beca_e *bce)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_dev *uwb_dev;
+ char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+ uwb_mac_addr_print(macbuf, sizeof(macbuf), bce->mac_addr);
+ uwb_dev_addr_print(devbuf, sizeof(devbuf), &bce->dev_addr);
+ uwb_dev = kzalloc(sizeof(struct uwb_dev), GFP_KERNEL);
+ if (uwb_dev == NULL) {
+ dev_err(dev, "new device %s: Cannot allocate memory\n",
+ macbuf);
+ return;
+ }
+ uwb_dev_init(uwb_dev); /* This sets refcnt to one, we own it */
+ uwb_dev->mac_addr = *bce->mac_addr;
+ uwb_dev->dev_addr = bce->dev_addr;
+ dev_set_name(&uwb_dev->dev, macbuf);
+ result = uwb_dev_add(uwb_dev, &rc->uwb_dev.dev, rc);
+ if (result < 0) {
+ dev_err(dev, "new device %s: cannot instantiate device\n",
+ macbuf);
+ goto error_dev_add;
+ }
+ /* plug the beacon cache */
+ bce->uwb_dev = uwb_dev;
+ uwb_dev->bce = bce;
+ uwb_bce_get(bce); /* released in uwb_dev_sys_release() */
+ dev_info(dev, "uwb device (mac %s dev %s) connected to %s %s\n",
+ macbuf, devbuf, rc->uwb_dev.dev.parent->bus->name,
+ dev_name(rc->uwb_dev.dev.parent));
+ uwb_notify(rc, uwb_dev, UWB_NOTIF_ONAIR);
+ return;
+
+error_dev_add:
+ kfree(uwb_dev);
+ return;
+}
+
+/**
+ * Iterate over the list of UWB devices, calling a @function on each
+ *
+ * See docs for bus_for_each()....
+ *
+ * @rc: radio controller for the devices.
+ * @function: function to call.
+ * @priv: data to pass to @function.
+ * @returns: 0 if no invocation of function() returned a value
+ * different to zero. That value otherwise.
+ */
+int uwb_dev_for_each(struct uwb_rc *rc, uwb_dev_for_each_f function, void *priv)
+{
+ return device_for_each_child(&rc->uwb_dev.dev, priv, function);
+}
+EXPORT_SYMBOL_GPL(uwb_dev_for_each);
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Life cycle of radio controllers
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * A UWB radio controller is also a UWB device, so it embeds one...
+ *
+ * List of RCs comes from the 'struct class uwb_rc_class'.
+ */
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/random.h>
+#include <linux/kdev_t.h>
+#include <linux/etherdevice.h>
+#include <linux/usb.h>
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+#include "uwb-internal.h"
+
+static int uwb_rc_index_match(struct device *dev, void *data)
+{
+ int *index = data;
+ struct uwb_rc *rc = dev_get_drvdata(dev);
+
+ if (rc->index == *index)
+ return 1;
+ return 0;
+}
+
+static struct uwb_rc *uwb_rc_find_by_index(int index)
+{
+ struct device *dev;
+ struct uwb_rc *rc = NULL;
+
+ dev = class_find_device(&uwb_rc_class, NULL, &index, uwb_rc_index_match);
+ if (dev)
+ rc = dev_get_drvdata(dev);
+ return rc;
+}
+
+static int uwb_rc_new_index(void)
+{
+ int index = 0;
+
+ for (;;) {
+ if (!uwb_rc_find_by_index(index))
+ return index;
+ if (++index < 0)
+ index = 0;
+ }
+}
+
+/**
+ * Release the backing device of a uwb_rc that has been dynamically allocated.
+ */
+static void uwb_rc_sys_release(struct device *dev)
+{
+ struct uwb_dev *uwb_dev = container_of(dev, struct uwb_dev, dev);
+ struct uwb_rc *rc = container_of(uwb_dev, struct uwb_rc, uwb_dev);
+
+ uwb_rc_neh_destroy(rc);
+ uwb_rc_ie_release(rc);
+ d_printf(1, dev, "freed uwb_rc %p\n", rc);
+ kfree(rc);
+}
+
+
+void uwb_rc_init(struct uwb_rc *rc)
+{
+ struct uwb_dev *uwb_dev = &rc->uwb_dev;
+
+ uwb_dev_init(uwb_dev);
+ rc->uwb_dev.dev.class = &uwb_rc_class;
+ rc->uwb_dev.dev.release = uwb_rc_sys_release;
+ uwb_rc_neh_create(rc);
+ rc->beaconing = -1;
+ rc->scan_type = UWB_SCAN_DISABLED;
+ INIT_LIST_HEAD(&rc->notifs_chain.list);
+ mutex_init(&rc->notifs_chain.mutex);
+ uwb_drp_avail_init(rc);
+ uwb_rc_ie_init(rc);
+ uwb_rsv_init(rc);
+ uwb_rc_pal_init(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_init);
+
+
+struct uwb_rc *uwb_rc_alloc(void)
+{
+ struct uwb_rc *rc;
+ rc = kzalloc(sizeof(*rc), GFP_KERNEL);
+ if (rc == NULL)
+ return NULL;
+ uwb_rc_init(rc);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_alloc);
+
+static struct attribute *rc_attrs[] = {
+ &dev_attr_mac_address.attr,
+ &dev_attr_scan.attr,
+ &dev_attr_beacon.attr,
+ NULL,
+};
+
+static struct attribute_group rc_attr_group = {
+ .attrs = rc_attrs,
+};
+
+/*
+ * Registration of sysfs specific stuff
+ */
+static int uwb_rc_sys_add(struct uwb_rc *rc)
+{
+ return sysfs_create_group(&rc->uwb_dev.dev.kobj, &rc_attr_group);
+}
+
+
+static void __uwb_rc_sys_rm(struct uwb_rc *rc)
+{
+ sysfs_remove_group(&rc->uwb_dev.dev.kobj, &rc_attr_group);
+}
+
+/**
+ * uwb_rc_mac_addr_setup - get an RC's EUI-48 address or set it
+ * @rc: the radio controller.
+ *
+ * If the EUI-48 address is 00:00:00:00:00:00 or FF:FF:FF:FF:FF:FF
+ * then a random locally administered EUI-48 is generated and set on
+ * the device. The probability of address collisions is sufficiently
+ * unlikely (1/2^40 = 9.1e-13) that they're not checked for.
+ */
+static
+int uwb_rc_mac_addr_setup(struct uwb_rc *rc)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_dev *uwb_dev = &rc->uwb_dev;
+ char devname[UWB_ADDR_STRSIZE];
+ struct uwb_mac_addr addr;
+
+ result = uwb_rc_mac_addr_get(rc, &addr);
+ if (result < 0) {
+ dev_err(dev, "cannot retrieve UWB EUI-48 address: %d\n", result);
+ return result;
+ }
+
+ if (uwb_mac_addr_unset(&addr) || uwb_mac_addr_bcast(&addr)) {
+ addr.data[0] = 0x02; /* locally adminstered and unicast */
+ get_random_bytes(&addr.data[1], sizeof(addr.data)-1);
+
+ result = uwb_rc_mac_addr_set(rc, &addr);
+ if (result < 0) {
+ uwb_mac_addr_print(devname, sizeof(devname), &addr);
+ dev_err(dev, "cannot set EUI-48 address %s: %d\n",
+ devname, result);
+ return result;
+ }
+ }
+ uwb_dev->mac_addr = addr;
+ return 0;
+}
+
+
+
+static int uwb_rc_setup(struct uwb_rc *rc)
+{
+ int result;
+ struct device *dev = &rc->uwb_dev.dev;
+
+ result = uwb_rc_reset(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot reset UWB radio: %d\n", result);
+ goto error;
+ }
+ result = uwb_rc_mac_addr_setup(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot setup UWB MAC address: %d\n", result);
+ goto error;
+ }
+ result = uwb_rc_dev_addr_assign(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot assign UWB DevAddr: %d\n", result);
+ goto error;
+ }
+ result = uwb_rc_ie_setup(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot setup IE subsystem: %d\n", result);
+ goto error_ie_setup;
+ }
+ result = uwb_rsv_setup(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot setup reservation subsystem: %d\n", result);
+ goto error_rsv_setup;
+ }
+ uwb_dbg_add_rc(rc);
+ return 0;
+
+error_rsv_setup:
+ uwb_rc_ie_release(rc);
+error_ie_setup:
+error:
+ return result;
+}
+
+
+/**
+ * Register a new UWB radio controller
+ *
+ * Did you call uwb_rc_init() on your rc?
+ *
+ * We assume that this is being called with a > 0 refcount on
+ * it [through ops->{get|put}_device(). We'll take our own, though.
+ *
+ * @parent_dev is our real device, the one that provides the actual UWB device
+ */
+int uwb_rc_add(struct uwb_rc *rc, struct device *parent_dev, void *priv)
+{
+ int result;
+ struct device *dev;
+ char macbuf[UWB_ADDR_STRSIZE], devbuf[UWB_ADDR_STRSIZE];
+
+ rc->index = uwb_rc_new_index();
+
+ dev = &rc->uwb_dev.dev;
+ dev_set_name(dev, "uwb%d", rc->index);
+
+ rc->priv = priv;
+
+ result = rc->start(rc);
+ if (result < 0)
+ goto error_rc_start;
+
+ result = uwb_rc_setup(rc);
+ if (result < 0) {
+ dev_err(dev, "cannot setup UWB radio controller: %d\n", result);
+ goto error_rc_setup;
+ }
+
+ result = uwb_dev_add(&rc->uwb_dev, parent_dev, rc);
+ if (result < 0 && result != -EADDRNOTAVAIL)
+ goto error_dev_add;
+
+ result = uwb_rc_sys_add(rc);
+ if (result < 0) {
+ dev_err(parent_dev, "cannot register UWB radio controller "
+ "dev attributes: %d\n", result);
+ goto error_sys_add;
+ }
+
+ uwb_mac_addr_print(macbuf, sizeof(macbuf), &rc->uwb_dev.mac_addr);
+ uwb_dev_addr_print(devbuf, sizeof(devbuf), &rc->uwb_dev.dev_addr);
+ dev_info(dev,
+ "new uwb radio controller (mac %s dev %s) on %s %s\n",
+ macbuf, devbuf, parent_dev->bus->name, dev_name(parent_dev));
+ rc->ready = 1;
+ return 0;
+
+error_sys_add:
+ uwb_dev_rm(&rc->uwb_dev);
+error_dev_add:
+error_rc_setup:
+ rc->stop(rc);
+ uwbd_flush(rc);
+error_rc_start:
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_add);
+
+
+static int uwb_dev_offair_helper(struct device *dev, void *priv)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+ return __uwb_dev_offair(uwb_dev, uwb_dev->rc);
+}
+
+/*
+ * Remove a Radio Controller; stop beaconing/scanning, disconnect all children
+ */
+void uwb_rc_rm(struct uwb_rc *rc)
+{
+ rc->ready = 0;
+
+ uwb_dbg_del_rc(rc);
+ uwb_rsv_cleanup(rc);
+ uwb_rc_ie_rm(rc, UWB_IDENTIFICATION_IE);
+ if (rc->beaconing >= 0)
+ uwb_rc_beacon(rc, -1, 0);
+ if (rc->scan_type != UWB_SCAN_DISABLED)
+ uwb_rc_scan(rc, rc->scanning, UWB_SCAN_DISABLED, 0);
+ uwb_rc_reset(rc);
+
+ rc->stop(rc);
+ uwbd_flush(rc);
+
+ uwb_dev_lock(&rc->uwb_dev);
+ rc->priv = NULL;
+ rc->cmd = NULL;
+ uwb_dev_unlock(&rc->uwb_dev);
+ mutex_lock(&uwb_beca.mutex);
+ uwb_dev_for_each(rc, uwb_dev_offair_helper, NULL);
+ __uwb_rc_sys_rm(rc);
+ mutex_unlock(&uwb_beca.mutex);
+ uwb_dev_rm(&rc->uwb_dev);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_rm);
+
+static int find_rc_try_get(struct device *dev, void *data)
+{
+ struct uwb_rc *target_rc = data;
+ struct uwb_rc *rc = dev_get_drvdata(dev);
+
+ if (rc == NULL) {
+ WARN_ON(1);
+ return 0;
+ }
+ if (rc == target_rc) {
+ if (rc->ready == 0)
+ return 0;
+ else
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * Given a radio controller descriptor, validate and refcount it
+ *
+ * @returns NULL if the rc does not exist or is quiescing; the ptr to
+ * it otherwise.
+ */
+struct uwb_rc *__uwb_rc_try_get(struct uwb_rc *target_rc)
+{
+ struct device *dev;
+ struct uwb_rc *rc = NULL;
+
+ dev = class_find_device(&uwb_rc_class, NULL, target_rc,
+ find_rc_try_get);
+ if (dev) {
+ rc = dev_get_drvdata(dev);
+ __uwb_rc_get(rc);
+ }
+ return rc;
+}
+EXPORT_SYMBOL_GPL(__uwb_rc_try_get);
+
+/*
+ * RC get for external refcount acquirers...
+ *
+ * Increments the refcount of the device and it's backend modules
+ */
+static inline struct uwb_rc *uwb_rc_get(struct uwb_rc *rc)
+{
+ if (rc->ready == 0)
+ return NULL;
+ uwb_dev_get(&rc->uwb_dev);
+ return rc;
+}
+
+static int find_rc_grandpa(struct device *dev, void *data)
+{
+ struct device *grandpa_dev = data;
+ struct uwb_rc *rc = dev_get_drvdata(dev);
+
+ if (rc->uwb_dev.dev.parent->parent == grandpa_dev) {
+ rc = uwb_rc_get(rc);
+ return 1;
+ }
+ return 0;
+}
+
+/**
+ * Locate and refcount a radio controller given a common grand-parent
+ *
+ * @grandpa_dev Pointer to the 'grandparent' device structure.
+ * @returns NULL If the rc does not exist or is quiescing; the ptr to
+ * it otherwise, properly referenced.
+ *
+ * The Radio Control interface (or the UWB Radio Controller) is always
+ * an interface of a device. The parent is the interface, the
+ * grandparent is the device that encapsulates the interface.
+ *
+ * There is no need to lock around as the "grandpa" would be
+ * refcounted by the target, and to remove the referemes, the
+ * uwb_rc_class->sem would have to be taken--we hold it, ergo we
+ * should be safe.
+ */
+struct uwb_rc *uwb_rc_get_by_grandpa(const struct device *grandpa_dev)
+{
+ struct device *dev;
+ struct uwb_rc *rc = NULL;
+
+ dev = class_find_device(&uwb_rc_class, NULL, (void *)grandpa_dev,
+ find_rc_grandpa);
+ if (dev)
+ rc = dev_get_drvdata(dev);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_by_grandpa);
+
+/**
+ * Find a radio controller by device address
+ *
+ * @returns the pointer to the radio controller, properly referenced
+ */
+static int find_rc_dev(struct device *dev, void *data)
+{
+ struct uwb_dev_addr *addr = data;
+ struct uwb_rc *rc = dev_get_drvdata(dev);
+
+ if (rc == NULL) {
+ WARN_ON(1);
+ return 0;
+ }
+ if (!uwb_dev_addr_cmp(&rc->uwb_dev.dev_addr, addr)) {
+ rc = uwb_rc_get(rc);
+ return 1;
+ }
+ return 0;
+}
+
+struct uwb_rc *uwb_rc_get_by_dev(const struct uwb_dev_addr *addr)
+{
+ struct device *dev;
+ struct uwb_rc *rc = NULL;
+
+ dev = class_find_device(&uwb_rc_class, NULL, (void *)addr,
+ find_rc_dev);
+ if (dev)
+ rc = dev_get_drvdata(dev);
+
+ return rc;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_get_by_dev);
+
+/**
+ * Drop a reference on a radio controller
+ *
+ * This is the version that should be done by entities external to the
+ * UWB Radio Control stack (ie: clients of the API).
+ */
+void uwb_rc_put(struct uwb_rc *rc)
+{
+ __uwb_rc_put(rc);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_put);
+
+/*
+ *
+ *
+ */
+ssize_t uwb_rc_print_IEs(struct uwb_rc *uwb_rc, char *buf, size_t size)
+{
+ ssize_t result;
+ struct uwb_rc_evt_get_ie *ie_info;
+ struct uwb_buf_ctx ctx;
+
+ result = uwb_rc_get_ie(uwb_rc, &ie_info);
+ if (result < 0)
+ goto error_get_ie;
+ ctx.buf = buf;
+ ctx.size = size;
+ ctx.bytes = 0;
+ uwb_ie_for_each(&uwb_rc->uwb_dev, uwb_ie_dump_hex, &ctx,
+ ie_info->IEData, result - sizeof(*ie_info));
+ result = ctx.bytes;
+ kfree(ie_info);
+error_get_ie:
+ return result;
+}
+
--- /dev/null
+/*
+ * WUSB Wire Adapter: Radio Control Interface (WUSB[8])
+ * Notification and Event Handling
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * The RC interface of the Host Wire Adapter (USB dongle) or WHCI PCI
+ * card delivers a stream of notifications and events to the
+ * notification end event endpoint or area. This code takes care of
+ * getting a buffer with that data, breaking it up in separate
+ * notifications and events and then deliver those.
+ *
+ * Events are answers to commands and they carry a context ID that
+ * associates them to the command. Notifications are that,
+ * notifications, they come out of the blue and have a context ID of
+ * zero. Think of the context ID kind of like a handler. The
+ * uwb_rc_neh_* code deals with managing context IDs.
+ *
+ * This is why you require a handle to operate on a UWB host. When you
+ * open a handle a context ID is assigned to you.
+ *
+ * So, as it is done is:
+ *
+ * 1. Add an event handler [uwb_rc_neh_add()] (assigns a ctx id)
+ * 2. Issue command [rc->cmd(rc, ...)]
+ * 3. Arm the timeout timer [uwb_rc_neh_arm()]
+ * 4, Release the reference to the neh [uwb_rc_neh_put()]
+ * 5. Wait for the callback
+ * 6. Command result (RCEB) is passed to the callback
+ *
+ * If (2) fails, you should remove the handle [uwb_rc_neh_rm()]
+ * instead of arming the timer.
+ *
+ * Handles are for using in *serialized* code, single thread.
+ *
+ * When the notification/event comes, the IRQ handler/endpoint
+ * callback passes the data read to uwb_rc_neh_grok() which will break
+ * it up in a discrete series of events, look up who is listening for
+ * them and execute the pertinent callbacks.
+ *
+ * If the reader detects an error while reading the data stream, call
+ * uwb_rc_neh_error().
+ *
+ * CONSTRAINTS/ASSUMPTIONS:
+ *
+ * - Most notifications/events are small (less thank .5k), copying
+ * around is ok.
+ *
+ * - Notifications/events are ALWAYS smaller than PAGE_SIZE
+ *
+ * - Notifications/events always come in a single piece (ie: a buffer
+ * will always contain entire notifications/events).
+ *
+ * - we cannot know in advance how long each event is (because they
+ * lack a length field in their header--smart move by the standards
+ * body, btw). So we need a facility to get the event size given the
+ * header. This is what the EST code does (notif/Event Size
+ * Tables), check nest.c--as well, you can associate the size to
+ * the handle [w/ neh->extra_size()].
+ *
+ * - Most notifications/events are fixed size; only a few are variable
+ * size (NEST takes care of that).
+ *
+ * - Listeners of events expect them, so they usually provide a
+ * buffer, as they know the size. Listeners to notifications don't,
+ * so we allocate their buffers dynamically.
+ */
+#include <linux/kernel.h>
+#include <linux/timer.h>
+#include <linux/err.h>
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/*
+ * UWB Radio Controller Notification/Event Handle
+ *
+ * Represents an entity waiting for an event coming from the UWB Radio
+ * Controller with a given context id (context) and type (evt_type and
+ * evt). On reception of the notification/event, the callback (cb) is
+ * called with the event.
+ *
+ * If the timer expires before the event is received, the callback is
+ * called with -ETIMEDOUT as the event size.
+ */
+struct uwb_rc_neh {
+ struct kref kref;
+
+ struct uwb_rc *rc;
+ u8 evt_type;
+ __le16 evt;
+ u8 context;
+ uwb_rc_cmd_cb_f cb;
+ void *arg;
+
+ struct timer_list timer;
+ struct list_head list_node;
+};
+
+static void uwb_rc_neh_timer(unsigned long arg);
+
+static void uwb_rc_neh_release(struct kref *kref)
+{
+ struct uwb_rc_neh *neh = container_of(kref, struct uwb_rc_neh, kref);
+
+ kfree(neh);
+}
+
+static void uwb_rc_neh_get(struct uwb_rc_neh *neh)
+{
+ kref_get(&neh->kref);
+}
+
+/**
+ * uwb_rc_neh_put - release reference to a neh
+ * @neh: the neh
+ */
+void uwb_rc_neh_put(struct uwb_rc_neh *neh)
+{
+ kref_put(&neh->kref, uwb_rc_neh_release);
+}
+
+
+/**
+ * Assigns @neh a context id from @rc's pool
+ *
+ * @rc: UWB Radio Controller descriptor; @rc->neh_lock taken
+ * @neh: Notification/Event Handle
+ * @returns 0 if context id was assigned ok; < 0 errno on error (if
+ * all the context IDs are taken).
+ *
+ * (assumes @wa is locked).
+ *
+ * NOTE: WUSB spec reserves context ids 0x00 for notifications and
+ * 0xff is invalid, so they must not be used. Initialization
+ * fills up those two in the bitmap so they are not allocated.
+ *
+ * We spread the allocation around to reduce the posiblity of two
+ * consecutive opened @neh's getting the same context ID assigned (to
+ * avoid surprises with late events that timed out long time ago). So
+ * first we search from where @rc->ctx_roll is, if not found, we
+ * search from zero.
+ */
+static
+int __uwb_rc_ctx_get(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+ int result;
+ result = find_next_zero_bit(rc->ctx_bm, UWB_RC_CTX_MAX,
+ rc->ctx_roll++);
+ if (result < UWB_RC_CTX_MAX)
+ goto found;
+ result = find_first_zero_bit(rc->ctx_bm, UWB_RC_CTX_MAX);
+ if (result < UWB_RC_CTX_MAX)
+ goto found;
+ return -ENFILE;
+found:
+ set_bit(result, rc->ctx_bm);
+ neh->context = result;
+ return 0;
+}
+
+
+/** Releases @neh's context ID back to @rc (@rc->neh_lock is locked). */
+static
+void __uwb_rc_ctx_put(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ if (neh->context == 0)
+ return;
+ if (test_bit(neh->context, rc->ctx_bm) == 0) {
+ dev_err(dev, "context %u not set in bitmap\n",
+ neh->context);
+ WARN_ON(1);
+ }
+ clear_bit(neh->context, rc->ctx_bm);
+ neh->context = 0;
+}
+
+/**
+ * uwb_rc_neh_add - add a neh for a radio controller command
+ * @rc: the radio controller
+ * @cmd: the radio controller command
+ * @expected_type: the type of the expected response event
+ * @expected_event: the expected event ID
+ * @cb: callback for when the event is received
+ * @arg: argument for the callback
+ *
+ * Creates a neh and adds it to the list of those waiting for an
+ * event. A context ID will be assigned to the command.
+ */
+struct uwb_rc_neh *uwb_rc_neh_add(struct uwb_rc *rc, struct uwb_rccb *cmd,
+ u8 expected_type, u16 expected_event,
+ uwb_rc_cmd_cb_f cb, void *arg)
+{
+ int result;
+ unsigned long flags;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_neh *neh;
+
+ neh = kzalloc(sizeof(*neh), GFP_KERNEL);
+ if (neh == NULL) {
+ result = -ENOMEM;
+ goto error_kzalloc;
+ }
+
+ kref_init(&neh->kref);
+ INIT_LIST_HEAD(&neh->list_node);
+ init_timer(&neh->timer);
+ neh->timer.function = uwb_rc_neh_timer;
+ neh->timer.data = (unsigned long)neh;
+
+ neh->rc = rc;
+ neh->evt_type = expected_type;
+ neh->evt = cpu_to_le16(expected_event);
+ neh->cb = cb;
+ neh->arg = arg;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ result = __uwb_rc_ctx_get(rc, neh);
+ if (result >= 0) {
+ cmd->bCommandContext = neh->context;
+ list_add_tail(&neh->list_node, &rc->neh_list);
+ uwb_rc_neh_get(neh);
+ }
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+ if (result < 0)
+ goto error_ctx_get;
+
+ return neh;
+
+error_ctx_get:
+ kfree(neh);
+error_kzalloc:
+ dev_err(dev, "cannot open handle to radio controller: %d\n", result);
+ return ERR_PTR(result);
+}
+
+static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+ del_timer(&neh->timer);
+ __uwb_rc_ctx_put(rc, neh);
+ list_del(&neh->list_node);
+}
+
+/**
+ * uwb_rc_neh_rm - remove a neh.
+ * @rc: the radio controller
+ * @neh: the neh to remove
+ *
+ * Remove an active neh immediately instead of waiting for the event
+ * (or a time out).
+ */
+void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ __uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ uwb_rc_neh_put(neh);
+}
+
+/**
+ * uwb_rc_neh_arm - arm an event handler timeout timer
+ *
+ * @rc: UWB Radio Controller
+ * @neh: Notification/event handler for @rc
+ *
+ * The timer is only armed if the neh is active.
+ */
+void uwb_rc_neh_arm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ if (neh->context)
+ mod_timer(&neh->timer,
+ jiffies + msecs_to_jiffies(UWB_RC_CMD_TIMEOUT_MS));
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
+
+static void uwb_rc_neh_cb(struct uwb_rc_neh *neh, struct uwb_rceb *rceb, size_t size)
+{
+ (*neh->cb)(neh->rc, neh->arg, rceb, size);
+ uwb_rc_neh_put(neh);
+}
+
+static bool uwb_rc_neh_match(struct uwb_rc_neh *neh, const struct uwb_rceb *rceb)
+{
+ return neh->evt_type == rceb->bEventType
+ && neh->evt == rceb->wEvent
+ && neh->context == rceb->bEventContext;
+}
+
+/**
+ * Find the handle waiting for a RC Radio Control Event
+ *
+ * @rc: UWB Radio Controller
+ * @rceb: Pointer to the RCEB buffer
+ * @event_size: Pointer to the size of the RCEB buffer. Might be
+ * adjusted to take into account the @neh->extra_size
+ * settings.
+ *
+ * If the listener has no buffer (NULL buffer), one is allocated for
+ * the right size (the amount of data received). @neh->ptr will point
+ * to the event payload, which always starts with a 'struct
+ * uwb_rceb'. kfree() it when done.
+ */
+static
+struct uwb_rc_neh *uwb_rc_neh_lookup(struct uwb_rc *rc,
+ const struct uwb_rceb *rceb)
+{
+ struct uwb_rc_neh *neh = NULL, *h;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+
+ list_for_each_entry(h, &rc->neh_list, list_node) {
+ if (uwb_rc_neh_match(h, rceb)) {
+ neh = h;
+ break;
+ }
+ }
+
+ if (neh)
+ __uwb_rc_neh_rm(rc, neh);
+
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ return neh;
+}
+
+
+/**
+ * Process notifications coming from the radio control interface
+ *
+ * @rc: UWB Radio Control Interface descriptor
+ * @neh: Notification/Event Handler @neh->ptr points to
+ * @uwb_evt->buffer.
+ *
+ * This function is called by the event/notif handling subsystem when
+ * notifications arrive (hwarc_probe() arms a notification/event handle
+ * that calls back this function for every received notification; this
+ * function then will rearm itself).
+ *
+ * Notification data buffers are dynamically allocated by the NEH
+ * handling code in neh.c [uwb_rc_neh_lookup()]. What is actually
+ * allocated is space to contain the notification data.
+ *
+ * Buffers are prefixed with a Radio Control Event Block (RCEB) as
+ * defined by the WUSB Wired-Adapter Radio Control interface. We
+ * just use it for the notification code.
+ *
+ * On each case statement we just transcode endianess of the different
+ * fields. We declare a pointer to a RCI definition of an event, and
+ * then to a UWB definition of the same event (which are the same,
+ * remember). Event if we use different pointers
+ */
+static
+void uwb_rc_notif(struct uwb_rc *rc, struct uwb_rceb *rceb, ssize_t size)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_event *uwb_evt;
+
+ if (size == -ESHUTDOWN)
+ return;
+ if (size < 0) {
+ dev_err(dev, "ignoring event with error code %zu\n",
+ size);
+ return;
+ }
+
+ uwb_evt = kzalloc(sizeof(*uwb_evt), GFP_ATOMIC);
+ if (unlikely(uwb_evt == NULL)) {
+ dev_err(dev, "no memory to queue event 0x%02x/%04x/%02x\n",
+ rceb->bEventType, le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext);
+ return;
+ }
+ uwb_evt->rc = __uwb_rc_get(rc); /* will be put by uwbd's uwbd_event_handle() */
+ uwb_evt->ts_jiffies = jiffies;
+ uwb_evt->type = UWB_EVT_TYPE_NOTIF;
+ uwb_evt->notif.size = size;
+ uwb_evt->notif.rceb = rceb;
+
+ switch (le16_to_cpu(rceb->wEvent)) {
+ /* Trap some vendor specific events
+ *
+ * FIXME: move this to handling in ptc-est, where we
+ * register a NULL event handler for these two guys
+ * using the Intel IDs.
+ */
+ case 0x0103:
+ dev_info(dev, "FIXME: DEVICE ADD\n");
+ return;
+ case 0x0104:
+ dev_info(dev, "FIXME: DEVICE RM\n");
+ return;
+ default:
+ break;
+ }
+
+ uwbd_event_queue(uwb_evt);
+}
+
+static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size_t size)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_neh *neh;
+ struct uwb_rceb *notif;
+
+ if (rceb->bEventContext == 0) {
+ notif = kmalloc(size, GFP_ATOMIC);
+ if (notif) {
+ memcpy(notif, rceb, size);
+ uwb_rc_notif(rc, notif, size);
+ } else
+ dev_err(dev, "event 0x%02x/%04x/%02x (%zu bytes): no memory\n",
+ rceb->bEventType, le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext, size);
+ } else {
+ neh = uwb_rc_neh_lookup(rc, rceb);
+ if (neh)
+ uwb_rc_neh_cb(neh, rceb, size);
+ else
+ dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
+ rceb->bEventType, le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext, size);
+ }
+}
+
+/**
+ * Given a buffer with one or more UWB RC events/notifications, break
+ * them up and dispatch them.
+ *
+ * @rc: UWB Radio Controller
+ * @buf: Buffer with the stream of notifications/events
+ * @buf_size: Amount of data in the buffer
+ *
+ * Note each notification/event starts always with a 'struct
+ * uwb_rceb', so the minimum size if 4 bytes.
+ *
+ * The device may pass us events formatted differently than expected.
+ * These are first filtered, potentially creating a new event in a new
+ * memory location. If a new event is created by the filter it is also
+ * freed here.
+ *
+ * For each notif/event, tries to guess the size looking at the EST
+ * tables, then looks for a neh that is waiting for that event and if
+ * found, copies the payload to the neh's buffer and calls it back. If
+ * not, the data is ignored.
+ *
+ * Note that if we can't find a size description in the EST tables, we
+ * still might find a size in the 'neh' handle in uwb_rc_neh_lookup().
+ *
+ * Assumptions:
+ *
+ * @rc->neh_lock is NOT taken
+ *
+ * We keep track of various sizes here:
+ * size: contains the size of the buffer that is processed for the
+ * incoming event. this buffer may contain events that are not
+ * formatted as WHCI.
+ * real_size: the actual space taken by this event in the buffer.
+ * We need to keep track of the real size of an event to be able to
+ * advance the buffer correctly.
+ * event_size: the size of the event as expected by the core layer
+ * [OR] the size of the event after filtering. if the filtering
+ * created a new event in a new memory location then this is
+ * effectively the size of a new event buffer
+ */
+void uwb_rc_neh_grok(struct uwb_rc *rc, void *buf, size_t buf_size)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ void *itr;
+ struct uwb_rceb *rceb;
+ size_t size, real_size, event_size;
+ int needtofree;
+
+ d_fnstart(3, dev, "(rc %p buf %p %zu buf_size)\n", rc, buf, buf_size);
+ d_printf(2, dev, "groking event block: %zu bytes\n", buf_size);
+ itr = buf;
+ size = buf_size;
+ while (size > 0) {
+ if (size < sizeof(*rceb)) {
+ dev_err(dev, "not enough data in event buffer to "
+ "process incoming events (%zu left, minimum is "
+ "%zu)\n", size, sizeof(*rceb));
+ break;
+ }
+
+ rceb = itr;
+ if (rc->filter_event) {
+ needtofree = rc->filter_event(rc, &rceb, size,
+ &real_size, &event_size);
+ if (needtofree < 0 && needtofree != -ENOANO) {
+ dev_err(dev, "BUG: Unable to filter event "
+ "(0x%02x/%04x/%02x) from "
+ "device. \n", rceb->bEventType,
+ le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext);
+ break;
+ }
+ } else
+ needtofree = -ENOANO;
+ /* do real processing if there was no filtering or the
+ * filtering didn't act */
+ if (needtofree == -ENOANO) {
+ ssize_t ret = uwb_est_find_size(rc, rceb, size);
+ if (ret < 0)
+ break;
+ if (ret > size) {
+ dev_err(dev, "BUG: hw sent incomplete event "
+ "0x%02x/%04x/%02x (%zd bytes), only got "
+ "%zu bytes. We don't handle that.\n",
+ rceb->bEventType, le16_to_cpu(rceb->wEvent),
+ rceb->bEventContext, ret, size);
+ break;
+ }
+ real_size = event_size = ret;
+ }
+ uwb_rc_neh_grok_event(rc, rceb, event_size);
+
+ if (needtofree == 1)
+ kfree(rceb);
+
+ itr += real_size;
+ size -= real_size;
+ d_printf(2, dev, "consumed %zd bytes, %zu left\n",
+ event_size, size);
+ }
+ d_fnend(3, dev, "(rc %p buf %p %zu buf_size) = void\n", rc, buf, buf_size);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
+
+
+/**
+ * The entity that reads from the device notification/event channel has
+ * detected an error.
+ *
+ * @rc: UWB Radio Controller
+ * @error: Errno error code
+ *
+ */
+void uwb_rc_neh_error(struct uwb_rc *rc, int error)
+{
+ struct uwb_rc_neh *neh, *next;
+ unsigned long flags;
+
+ BUG_ON(error >= 0);
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ __uwb_rc_neh_rm(rc, neh);
+ uwb_rc_neh_cb(neh, NULL, error);
+ }
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_neh_error);
+
+
+static void uwb_rc_neh_timer(unsigned long arg)
+{
+ struct uwb_rc_neh *neh = (struct uwb_rc_neh *)arg;
+ struct uwb_rc *rc = neh->rc;
+ unsigned long flags;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ __uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
+}
+
+/** Initializes the @rc's neh subsystem
+ */
+void uwb_rc_neh_create(struct uwb_rc *rc)
+{
+ spin_lock_init(&rc->neh_lock);
+ INIT_LIST_HEAD(&rc->neh_list);
+ set_bit(0, rc->ctx_bm); /* 0 is reserved (see [WUSB] table 8-65) */
+ set_bit(0xff, rc->ctx_bm); /* and 0xff is invalid */
+ rc->ctx_roll = 1;
+}
+
+
+/** Release's the @rc's neh subsystem */
+void uwb_rc_neh_destroy(struct uwb_rc *rc)
+{
+ unsigned long flags;
+ struct uwb_rc_neh *neh, *next;
+
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ __uwb_rc_neh_rm(rc, neh);
+ uwb_rc_neh_put(neh);
+ }
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+}
--- /dev/null
+/*
+ * UWB PAL support.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+/**
+ * uwb_pal_init - initialize a UWB PAL
+ * @pal: the PAL to initialize
+ */
+void uwb_pal_init(struct uwb_pal *pal)
+{
+ INIT_LIST_HEAD(&pal->node);
+}
+EXPORT_SYMBOL_GPL(uwb_pal_init);
+
+/**
+ * uwb_pal_register - register a UWB PAL
+ * @rc: the radio controller the PAL will be using
+ * @pal: the PAL
+ *
+ * The PAL must be initialized with uwb_pal_init().
+ */
+int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal)
+{
+ int ret;
+
+ if (pal->device) {
+ ret = sysfs_create_link(&pal->device->kobj,
+ &rc->uwb_dev.dev.kobj, "uwb_rc");
+ if (ret < 0)
+ return ret;
+ ret = sysfs_create_link(&rc->uwb_dev.dev.kobj,
+ &pal->device->kobj, pal->name);
+ if (ret < 0) {
+ sysfs_remove_link(&pal->device->kobj, "uwb_rc");
+ return ret;
+ }
+ }
+
+ spin_lock(&rc->pal_lock);
+ list_add(&pal->node, &rc->pals);
+ spin_unlock(&rc->pal_lock);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(uwb_pal_register);
+
+/**
+ * uwb_pal_register - unregister a UWB PAL
+ * @rc: the radio controller the PAL was using
+ * @pal: the PAL
+ */
+void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal)
+{
+ spin_lock(&rc->pal_lock);
+ list_del(&pal->node);
+ spin_unlock(&rc->pal_lock);
+
+ if (pal->device) {
+ sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
+ sysfs_remove_link(&pal->device->kobj, "uwb_rc");
+ }
+}
+EXPORT_SYMBOL_GPL(uwb_pal_unregister);
+
+/**
+ * uwb_rc_pal_init - initialize the PAL related parts of a radio controller
+ * @rc: the radio controller
+ */
+void uwb_rc_pal_init(struct uwb_rc *rc)
+{
+ spin_lock_init(&rc->pal_lock);
+ INIT_LIST_HEAD(&rc->pals);
+}
--- /dev/null
+/*
+ * Ultra Wide Band
+ * UWB basic command support and radio reset
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME:
+ *
+ * - docs
+ *
+ * - Now we are serializing (using the uwb_dev->mutex) the command
+ * execution; it should be parallelized as much as possible some
+ * day.
+ */
+#include <linux/kernel.h>
+#include <linux/err.h>
+
+#include "uwb-internal.h"
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * Command result codes (WUSB1.0[T8-69])
+ */
+static
+const char *__strerror[] = {
+ "success",
+ "failure",
+ "hardware failure",
+ "no more slots",
+ "beacon is too large",
+ "invalid parameter",
+ "unsupported power level",
+ "time out (wa) or invalid ie data (whci)",
+ "beacon size exceeded",
+ "cancelled",
+ "invalid state",
+ "invalid size",
+ "ack not recieved",
+ "no more asie notification",
+};
+
+
+/** Return a string matching the given error code */
+const char *uwb_rc_strerror(unsigned code)
+{
+ if (code == 255)
+ return "time out";
+ if (code >= ARRAY_SIZE(__strerror))
+ return "unknown error";
+ return __strerror[code];
+}
+
+int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ u8 expected_type, u16 expected_event,
+ uwb_rc_cmd_cb_f cb, void *arg)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_neh *neh;
+ int needtofree = 0;
+ int result;
+
+ uwb_dev_lock(&rc->uwb_dev); /* Protect against rc->priv being removed */
+ if (rc->priv == NULL) {
+ uwb_dev_unlock(&rc->uwb_dev);
+ return -ESHUTDOWN;
+ }
+
+ if (rc->filter_cmd) {
+ needtofree = rc->filter_cmd(rc, &cmd, &cmd_size);
+ if (needtofree < 0 && needtofree != -ENOANO) {
+ dev_err(dev, "%s: filter error: %d\n",
+ cmd_name, needtofree);
+ uwb_dev_unlock(&rc->uwb_dev);
+ return needtofree;
+ }
+ }
+
+ neh = uwb_rc_neh_add(rc, cmd, expected_type, expected_event, cb, arg);
+ if (IS_ERR(neh)) {
+ result = PTR_ERR(neh);
+ goto out;
+ }
+
+ result = rc->cmd(rc, cmd, cmd_size);
+ uwb_dev_unlock(&rc->uwb_dev);
+ if (result < 0)
+ uwb_rc_neh_rm(rc, neh);
+ else
+ uwb_rc_neh_arm(rc, neh);
+ uwb_rc_neh_put(neh);
+out:
+ if (needtofree == 1)
+ kfree(cmd);
+ return result < 0 ? result : 0;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_cmd_async);
+
+struct uwb_rc_cmd_done_params {
+ struct completion completion;
+ struct uwb_rceb *reply;
+ ssize_t reply_size;
+};
+
+static void uwb_rc_cmd_done(struct uwb_rc *rc, void *arg,
+ struct uwb_rceb *reply, ssize_t reply_size)
+{
+ struct uwb_rc_cmd_done_params *p = (struct uwb_rc_cmd_done_params *)arg;
+
+ if (reply_size > 0) {
+ if (p->reply)
+ reply_size = min(p->reply_size, reply_size);
+ else
+ p->reply = kmalloc(reply_size, GFP_ATOMIC);
+
+ if (p->reply)
+ memcpy(p->reply, reply, reply_size);
+ else
+ reply_size = -ENOMEM;
+ }
+ p->reply_size = reply_size;
+ complete(&p->completion);
+}
+
+
+/**
+ * Generic function for issuing commands to the Radio Control Interface
+ *
+ * @rc: UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd: Pointer to rccb structure containing the command;
+ * normally you embed this structure as the first member of
+ * the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @reply: Pointer to where to store the reply
+ * @reply_size: @reply's size
+ * @expected_type: Expected type in the return event
+ * @expected_event: Expected event code in the return event
+ * @preply: Here a pointer to where the event data is received will
+ * be stored. Once done with the data, free with kfree().
+ *
+ * This function is generic; it works for commands that return a fixed
+ * and known size or for commands that return a variable amount of data.
+ *
+ * If a buffer is provided, that is used, although it could be chopped
+ * to the maximum size of the buffer. If the buffer is NULL, then one
+ * be allocated in *preply with the whole contents of the reply.
+ *
+ * @rc needs to be referenced
+ */
+static
+ssize_t __uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ struct uwb_rceb *reply, size_t reply_size,
+ u8 expected_type, u16 expected_event,
+ struct uwb_rceb **preply)
+{
+ ssize_t result = 0;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_rc_cmd_done_params params;
+
+ init_completion(¶ms.completion);
+ params.reply = reply;
+ params.reply_size = reply_size;
+
+ result = uwb_rc_cmd_async(rc, cmd_name, cmd, cmd_size,
+ expected_type, expected_event,
+ uwb_rc_cmd_done, ¶ms);
+ if (result)
+ return result;
+
+ wait_for_completion(¶ms.completion);
+
+ if (preply)
+ *preply = params.reply;
+
+ if (params.reply_size < 0)
+ dev_err(dev, "%s: confirmation event 0x%02x/%04x/%02x "
+ "reception failed: %d\n", cmd_name,
+ expected_type, expected_event, cmd->bCommandContext,
+ (int)params.reply_size);
+ return params.reply_size;
+}
+
+
+/**
+ * Generic function for issuing commands to the Radio Control Interface
+ *
+ * @rc: UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd: Pointer to rccb structure containing the command;
+ * normally you embed this structure as the first member of
+ * the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @reply: Pointer to the beginning of the confirmation event
+ * buffer. Normally bigger than an 'struct hwarc_rceb'.
+ * You need to fill out reply->bEventType and reply->wEvent (in
+ * cpu order) as the function will use them to verify the
+ * confirmation event.
+ * @reply_size: Size of the reply buffer
+ *
+ * The function checks that the length returned in the reply is at
+ * least as big as @reply_size; if not, it will be deemed an error and
+ * -EIO returned.
+ *
+ * @rc needs to be referenced
+ */
+ssize_t uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ struct uwb_rceb *reply, size_t reply_size)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ ssize_t result;
+
+ result = __uwb_rc_cmd(rc, cmd_name,
+ cmd, cmd_size, reply, reply_size,
+ reply->bEventType, reply->wEvent, NULL);
+
+ if (result > 0 && result < reply_size) {
+ dev_err(dev, "%s: not enough data returned for decoding reply "
+ "(%zu bytes received vs at least %zu needed)\n",
+ cmd_name, result, reply_size);
+ result = -EIO;
+ }
+ return result;
+}
+EXPORT_SYMBOL_GPL(uwb_rc_cmd);
+
+
+/**
+ * Generic function for issuing commands to the Radio Control
+ * Interface that return an unknown amount of data
+ *
+ * @rc: UWB Radio Control descriptor
+ * @cmd_name: Name of the command being issued (for error messages)
+ * @cmd: Pointer to rccb structure containing the command;
+ * normally you embed this structure as the first member of
+ * the full command structure.
+ * @cmd_size: Size of the whole command buffer pointed to by @cmd.
+ * @expected_type: Expected type in the return event
+ * @expected_event: Expected event code in the return event
+ * @preply: Here a pointer to where the event data is received will
+ * be stored. Once done with the data, free with kfree().
+ *
+ * The function checks that the length returned in the reply is at
+ * least as big as a 'struct uwb_rceb *'; if not, it will be deemed an
+ * error and -EIO returned.
+ *
+ * @rc needs to be referenced
+ */
+ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ u8 expected_type, u16 expected_event,
+ struct uwb_rceb **preply)
+{
+ return __uwb_rc_cmd(rc, cmd_name, cmd, cmd_size, NULL, 0,
+ expected_type, expected_event, preply);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_vcmd);
+
+
+/**
+ * Reset a UWB Host Controller (and all radio settings)
+ *
+ * @rc: Host Controller descriptor
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ */
+int uwb_rc_reset(struct uwb_rc *rc)
+{
+ int result = -ENOMEM;
+ struct uwb_rc_evt_confirm reply;
+ struct uwb_rccb *cmd;
+ size_t cmd_size = sizeof(*cmd);
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ goto error_kzalloc;
+ cmd->bCommandType = UWB_RC_CET_GENERAL;
+ cmd->wCommand = cpu_to_le16(UWB_RC_CMD_RESET);
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_RESET;
+ result = uwb_rc_cmd(rc, "RESET", cmd, cmd_size,
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev,
+ "RESET: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+ result = -EIO;
+ }
+error_cmd:
+ kfree(cmd);
+error_kzalloc:
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+int uwbd_msg_handle_reset(struct uwb_event *evt)
+{
+ struct uwb_rc *rc = evt->rc;
+ int ret;
+
+ /* Need to prevent the RC hardware module going away while in
+ the rc->reset() call. */
+ if (!try_module_get(rc->owner))
+ return 0;
+
+ dev_info(&rc->uwb_dev.dev, "resetting radio controller\n");
+ ret = rc->reset(rc);
+ if (ret)
+ dev_err(&rc->uwb_dev.dev, "failed to reset hardware: %d\n", ret);
+
+ module_put(rc->owner);
+ return ret;
+}
+
+/**
+ * uwb_rc_reset_all - request a reset of the radio controller and PALs
+ * @rc: the radio controller of the hardware device to be reset.
+ *
+ * The full hardware reset of the radio controller and all the PALs
+ * will be scheduled.
+ */
+void uwb_rc_reset_all(struct uwb_rc *rc)
+{
+ struct uwb_event *evt;
+
+ evt = kzalloc(sizeof(struct uwb_event), GFP_ATOMIC);
+ if (unlikely(evt == NULL))
+ return;
+
+ evt->rc = __uwb_rc_get(rc); /* will be put by uwbd's uwbd_event_handle() */
+ evt->ts_jiffies = jiffies;
+ evt->type = UWB_EVT_TYPE_MSG;
+ evt->message = UWB_EVT_MSG_RESET;
+
+ uwbd_event_queue(evt);
+}
+EXPORT_SYMBOL_GPL(uwb_rc_reset_all);
--- /dev/null
+/*
+ * UWB reservation management.
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/uwb.h>
+
+#include "uwb-internal.h"
+
+static void uwb_rsv_timer(unsigned long arg);
+
+static const char *rsv_states[] = {
+ [UWB_RSV_STATE_NONE] = "none",
+ [UWB_RSV_STATE_O_INITIATED] = "initiated",
+ [UWB_RSV_STATE_O_PENDING] = "pending",
+ [UWB_RSV_STATE_O_MODIFIED] = "modified",
+ [UWB_RSV_STATE_O_ESTABLISHED] = "established",
+ [UWB_RSV_STATE_T_ACCEPTED] = "accepted",
+ [UWB_RSV_STATE_T_DENIED] = "denied",
+ [UWB_RSV_STATE_T_PENDING] = "pending",
+};
+
+static const char *rsv_types[] = {
+ [UWB_DRP_TYPE_ALIEN_BP] = "alien-bp",
+ [UWB_DRP_TYPE_HARD] = "hard",
+ [UWB_DRP_TYPE_SOFT] = "soft",
+ [UWB_DRP_TYPE_PRIVATE] = "private",
+ [UWB_DRP_TYPE_PCA] = "pca",
+};
+
+/**
+ * uwb_rsv_state_str - return a string for a reservation state
+ * @state: the reservation state.
+ */
+const char *uwb_rsv_state_str(enum uwb_rsv_state state)
+{
+ if (state < UWB_RSV_STATE_NONE || state >= UWB_RSV_STATE_LAST)
+ return "unknown";
+ return rsv_states[state];
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_state_str);
+
+/**
+ * uwb_rsv_type_str - return a string for a reservation type
+ * @type: the reservation type
+ */
+const char *uwb_rsv_type_str(enum uwb_drp_type type)
+{
+ if (type < UWB_DRP_TYPE_ALIEN_BP || type > UWB_DRP_TYPE_PCA)
+ return "invalid";
+ return rsv_types[type];
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_type_str);
+
+static void uwb_rsv_dump(struct uwb_rsv *rsv)
+{
+ struct device *dev = &rsv->rc->uwb_dev.dev;
+ struct uwb_dev_addr devaddr;
+ char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+
+ uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+ if (rsv->target.type == UWB_RSV_TARGET_DEV)
+ devaddr = rsv->target.dev->dev_addr;
+ else
+ devaddr = rsv->target.devaddr;
+ uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+ dev_dbg(dev, "rsv %s -> %s: %s\n", owner, target, uwb_rsv_state_str(rsv->state));
+}
+
+/*
+ * Get a free stream index for a reservation.
+ *
+ * If the target is a DevAddr (e.g., a WUSB cluster reservation) then
+ * the stream is allocated from a pool of per-RC stream indexes,
+ * otherwise a unique stream index for the target is selected.
+ */
+static int uwb_rsv_get_stream(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+ unsigned long *streams_bm;
+ int stream;
+
+ switch (rsv->target.type) {
+ case UWB_RSV_TARGET_DEV:
+ streams_bm = rsv->target.dev->streams;
+ break;
+ case UWB_RSV_TARGET_DEVADDR:
+ streams_bm = rc->uwb_dev.streams;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ stream = find_first_zero_bit(streams_bm, UWB_NUM_STREAMS);
+ if (stream >= UWB_NUM_STREAMS)
+ return -EBUSY;
+
+ rsv->stream = stream;
+ set_bit(stream, streams_bm);
+
+ return 0;
+}
+
+static void uwb_rsv_put_stream(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+ unsigned long *streams_bm;
+
+ switch (rsv->target.type) {
+ case UWB_RSV_TARGET_DEV:
+ streams_bm = rsv->target.dev->streams;
+ break;
+ case UWB_RSV_TARGET_DEVADDR:
+ streams_bm = rc->uwb_dev.streams;
+ break;
+ default:
+ return;
+ }
+
+ clear_bit(rsv->stream, streams_bm);
+}
+
+/*
+ * Generate a MAS allocation with a single row component.
+ */
+static void uwb_rsv_gen_alloc_row(struct uwb_mas_bm *mas,
+ int first_mas, int mas_per_zone,
+ int zs, int ze)
+{
+ struct uwb_mas_bm col;
+ int z;
+
+ bitmap_zero(mas->bm, UWB_NUM_MAS);
+ bitmap_zero(col.bm, UWB_NUM_MAS);
+ bitmap_fill(col.bm, mas_per_zone);
+ bitmap_shift_left(col.bm, col.bm, first_mas + zs * UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+
+ for (z = zs; z <= ze; z++) {
+ bitmap_or(mas->bm, mas->bm, col.bm, UWB_NUM_MAS);
+ bitmap_shift_left(col.bm, col.bm, UWB_MAS_PER_ZONE, UWB_NUM_MAS);
+ }
+}
+
+/*
+ * Allocate some MAS for this reservation based on current local
+ * availability, the reservation parameters (max_mas, min_mas,
+ * sparsity), and the WiMedia rules for MAS allocations.
+ *
+ * Returns -EBUSY is insufficient free MAS are available.
+ *
+ * FIXME: to simplify this, only safe reservations with a single row
+ * component in zones 1 to 15 are tried (zone 0 is skipped to avoid
+ * problems with the MAS reserved for the BP).
+ *
+ * [ECMA-368] section B.2.
+ */
+static int uwb_rsv_alloc_mas(struct uwb_rsv *rsv)
+{
+ static const int safe_mas_in_row[UWB_NUM_ZONES] = {
+ 8, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1,
+ };
+ int n, r;
+ struct uwb_mas_bm mas;
+ bool found = false;
+
+ /*
+ * Search all valid safe allocations until either: too few MAS
+ * are available; or the smallest allocation with sufficient
+ * MAS is found.
+ *
+ * The top of the zones are preferred, so space for larger
+ * allocations is available in the bottom of the zone (e.g., a
+ * 15 MAS allocation should start in row 14 leaving space for
+ * a 120 MAS allocation at row 0).
+ */
+ for (n = safe_mas_in_row[0]; n >= 1; n--) {
+ int num_mas;
+
+ num_mas = n * (UWB_NUM_ZONES - 1);
+ if (num_mas < rsv->min_mas)
+ break;
+ if (found && num_mas < rsv->max_mas)
+ break;
+
+ for (r = UWB_MAS_PER_ZONE-1; r >= 0; r--) {
+ if (safe_mas_in_row[r] < n)
+ continue;
+ uwb_rsv_gen_alloc_row(&mas, r, n, 1, UWB_NUM_ZONES);
+ if (uwb_drp_avail_reserve_pending(rsv->rc, &mas) == 0) {
+ found = true;
+ break;
+ }
+ }
+ }
+
+ if (!found)
+ return -EBUSY;
+
+ bitmap_copy(rsv->mas.bm, mas.bm, UWB_NUM_MAS);
+ return 0;
+}
+
+static void uwb_rsv_stroke_timer(struct uwb_rsv *rsv)
+{
+ int sframes = UWB_MAX_LOST_BEACONS;
+
+ /*
+ * Multicast reservations can become established within 1
+ * super frame and should not be terminated if no response is
+ * received.
+ */
+ if (rsv->is_multicast) {
+ if (rsv->state == UWB_RSV_STATE_O_INITIATED)
+ sframes = 1;
+ if (rsv->state == UWB_RSV_STATE_O_ESTABLISHED)
+ sframes = 0;
+ }
+
+ rsv->expired = false;
+ if (sframes > 0) {
+ /*
+ * Add an additional 2 superframes to account for the
+ * time to send the SET DRP IE command.
+ */
+ unsigned timeout_us = (sframes + 2) * UWB_SUPERFRAME_LENGTH_US;
+ mod_timer(&rsv->timer, jiffies + usecs_to_jiffies(timeout_us));
+ } else
+ del_timer(&rsv->timer);
+}
+
+/*
+ * Update a reservations state, and schedule an update of the
+ * transmitted DRP IEs.
+ */
+static void uwb_rsv_state_update(struct uwb_rsv *rsv,
+ enum uwb_rsv_state new_state)
+{
+ rsv->state = new_state;
+ rsv->ie_valid = false;
+
+ uwb_rsv_dump(rsv);
+
+ uwb_rsv_stroke_timer(rsv);
+ uwb_rsv_sched_update(rsv->rc);
+}
+
+static void uwb_rsv_callback(struct uwb_rsv *rsv)
+{
+ if (rsv->callback)
+ rsv->callback(rsv);
+}
+
+void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state)
+{
+ if (rsv->state == new_state) {
+ switch (rsv->state) {
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ case UWB_RSV_STATE_T_ACCEPTED:
+ case UWB_RSV_STATE_NONE:
+ uwb_rsv_stroke_timer(rsv);
+ break;
+ default:
+ /* Expecting a state transition so leave timer
+ as-is. */
+ break;
+ }
+ return;
+ }
+
+ switch (new_state) {
+ case UWB_RSV_STATE_NONE:
+ uwb_drp_avail_release(rsv->rc, &rsv->mas);
+ uwb_rsv_put_stream(rsv);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_NONE);
+ uwb_rsv_callback(rsv);
+ break;
+ case UWB_RSV_STATE_O_INITIATED:
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_INITIATED);
+ break;
+ case UWB_RSV_STATE_O_PENDING:
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_PENDING);
+ break;
+ case UWB_RSV_STATE_O_ESTABLISHED:
+ uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_O_ESTABLISHED);
+ uwb_rsv_callback(rsv);
+ break;
+ case UWB_RSV_STATE_T_ACCEPTED:
+ uwb_drp_avail_reserve(rsv->rc, &rsv->mas);
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_ACCEPTED);
+ uwb_rsv_callback(rsv);
+ break;
+ case UWB_RSV_STATE_T_DENIED:
+ uwb_rsv_state_update(rsv, UWB_RSV_STATE_T_DENIED);
+ break;
+ default:
+ dev_err(&rsv->rc->uwb_dev.dev, "unhandled state: %s (%d)\n",
+ uwb_rsv_state_str(new_state), new_state);
+ }
+}
+
+static struct uwb_rsv *uwb_rsv_alloc(struct uwb_rc *rc)
+{
+ struct uwb_rsv *rsv;
+
+ rsv = kzalloc(sizeof(struct uwb_rsv), GFP_KERNEL);
+ if (!rsv)
+ return NULL;
+
+ INIT_LIST_HEAD(&rsv->rc_node);
+ INIT_LIST_HEAD(&rsv->pal_node);
+ init_timer(&rsv->timer);
+ rsv->timer.function = uwb_rsv_timer;
+ rsv->timer.data = (unsigned long)rsv;
+
+ rsv->rc = rc;
+
+ return rsv;
+}
+
+static void uwb_rsv_free(struct uwb_rsv *rsv)
+{
+ uwb_dev_put(rsv->owner);
+ if (rsv->target.type == UWB_RSV_TARGET_DEV)
+ uwb_dev_put(rsv->target.dev);
+ kfree(rsv);
+}
+
+/**
+ * uwb_rsv_create - allocate and initialize a UWB reservation structure
+ * @rc: the radio controller
+ * @cb: callback to use when the reservation completes or terminates
+ * @pal_priv: data private to the PAL to be passed in the callback
+ *
+ * The callback is called when the state of the reservation changes from:
+ *
+ * - pending to accepted
+ * - pending to denined
+ * - accepted to terminated
+ * - pending to terminated
+ */
+struct uwb_rsv *uwb_rsv_create(struct uwb_rc *rc, uwb_rsv_cb_f cb, void *pal_priv)
+{
+ struct uwb_rsv *rsv;
+
+ rsv = uwb_rsv_alloc(rc);
+ if (!rsv)
+ return NULL;
+
+ rsv->callback = cb;
+ rsv->pal_priv = pal_priv;
+
+ return rsv;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_create);
+
+void uwb_rsv_remove(struct uwb_rsv *rsv)
+{
+ if (rsv->state != UWB_RSV_STATE_NONE)
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+ del_timer_sync(&rsv->timer);
+ list_del(&rsv->rc_node);
+ uwb_rsv_free(rsv);
+}
+
+/**
+ * uwb_rsv_destroy - free a UWB reservation structure
+ * @rsv: the reservation to free
+ *
+ * The reservation will be terminated if it is pending or established.
+ */
+void uwb_rsv_destroy(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+
+ mutex_lock(&rc->rsvs_mutex);
+ uwb_rsv_remove(rsv);
+ mutex_unlock(&rc->rsvs_mutex);
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_destroy);
+
+/**
+ * usb_rsv_establish - start a reservation establishment
+ * @rsv: the reservation
+ *
+ * The PAL should fill in @rsv's owner, target, type, max_mas,
+ * min_mas, sparsity and is_multicast fields. If the target is a
+ * uwb_dev it must be referenced.
+ *
+ * The reservation's callback will be called when the reservation is
+ * accepted, denied or times out.
+ */
+int uwb_rsv_establish(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+ int ret;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ ret = uwb_rsv_get_stream(rsv);
+ if (ret)
+ goto out;
+
+ ret = uwb_rsv_alloc_mas(rsv);
+ if (ret) {
+ uwb_rsv_put_stream(rsv);
+ goto out;
+ }
+
+ list_add_tail(&rsv->rc_node, &rc->reservations);
+ rsv->owner = &rc->uwb_dev;
+ uwb_dev_get(rsv->owner);
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_O_INITIATED);
+out:
+ mutex_unlock(&rc->rsvs_mutex);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_establish);
+
+/**
+ * uwb_rsv_modify - modify an already established reservation
+ * @rsv: the reservation to modify
+ * @max_mas: new maximum MAS to reserve
+ * @min_mas: new minimum MAS to reserve
+ * @sparsity: new sparsity to use
+ *
+ * FIXME: implement this once there are PALs that use it.
+ */
+int uwb_rsv_modify(struct uwb_rsv *rsv, int max_mas, int min_mas, int sparsity)
+{
+ return -ENOSYS;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_modify);
+
+/**
+ * uwb_rsv_terminate - terminate an established reservation
+ * @rsv: the reservation to terminate
+ *
+ * A reservation is terminated by removing the DRP IE from the beacon,
+ * the other end will consider the reservation to be terminated when
+ * it does not see the DRP IE for at least mMaxLostBeacons.
+ *
+ * If applicable, the reference to the target uwb_dev will be released.
+ */
+void uwb_rsv_terminate(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ uwb_rsv_set_state(rsv, UWB_RSV_STATE_NONE);
+
+ mutex_unlock(&rc->rsvs_mutex);
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_terminate);
+
+/**
+ * uwb_rsv_accept - accept a new reservation from a peer
+ * @rsv: the reservation
+ * @cb: call back for reservation changes
+ * @pal_priv: data to be passed in the above call back
+ *
+ * Reservation requests from peers are denied unless a PAL accepts it
+ * by calling this function.
+ */
+void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv)
+{
+ rsv->callback = cb;
+ rsv->pal_priv = pal_priv;
+ rsv->state = UWB_RSV_STATE_T_ACCEPTED;
+}
+EXPORT_SYMBOL_GPL(uwb_rsv_accept);
+
+/*
+ * Is a received DRP IE for this reservation?
+ */
+static bool uwb_rsv_match(struct uwb_rsv *rsv, struct uwb_dev *src,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct uwb_dev_addr *rsv_src;
+ int stream;
+
+ stream = uwb_ie_drp_stream_index(drp_ie);
+
+ if (rsv->stream != stream)
+ return false;
+
+ switch (rsv->target.type) {
+ case UWB_RSV_TARGET_DEVADDR:
+ return rsv->stream == stream;
+ case UWB_RSV_TARGET_DEV:
+ if (uwb_ie_drp_owner(drp_ie))
+ rsv_src = &rsv->owner->dev_addr;
+ else
+ rsv_src = &rsv->target.dev->dev_addr;
+ return uwb_dev_addr_cmp(&src->dev_addr, rsv_src) == 0;
+ }
+ return false;
+}
+
+static struct uwb_rsv *uwb_rsv_new_target(struct uwb_rc *rc,
+ struct uwb_dev *src,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct uwb_rsv *rsv;
+ struct uwb_pal *pal;
+ enum uwb_rsv_state state;
+
+ rsv = uwb_rsv_alloc(rc);
+ if (!rsv)
+ return NULL;
+
+ rsv->rc = rc;
+ rsv->owner = src;
+ uwb_dev_get(rsv->owner);
+ rsv->target.type = UWB_RSV_TARGET_DEV;
+ rsv->target.dev = &rc->uwb_dev;
+ rsv->type = uwb_ie_drp_type(drp_ie);
+ rsv->stream = uwb_ie_drp_stream_index(drp_ie);
+ set_bit(rsv->stream, rsv->owner->streams);
+ uwb_drp_ie_to_bm(&rsv->mas, drp_ie);
+
+ /*
+ * See if any PALs are interested in this reservation. If not,
+ * deny the request.
+ */
+ rsv->state = UWB_RSV_STATE_T_DENIED;
+ spin_lock(&rc->pal_lock);
+ list_for_each_entry(pal, &rc->pals, node) {
+ if (pal->new_rsv)
+ pal->new_rsv(rsv);
+ if (rsv->state == UWB_RSV_STATE_T_ACCEPTED)
+ break;
+ }
+ spin_unlock(&rc->pal_lock);
+
+ list_add_tail(&rsv->rc_node, &rc->reservations);
+ state = rsv->state;
+ rsv->state = UWB_RSV_STATE_NONE;
+ uwb_rsv_set_state(rsv, state);
+
+ return rsv;
+}
+
+/**
+ * uwb_rsv_find - find a reservation for a received DRP IE.
+ * @rc: the radio controller
+ * @src: source of the DRP IE
+ * @drp_ie: the DRP IE
+ *
+ * If the reservation cannot be found and the DRP IE is from a peer
+ * attempting to establish a new reservation, create a new reservation
+ * and add it to the list.
+ */
+struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
+ struct uwb_ie_drp *drp_ie)
+{
+ struct uwb_rsv *rsv;
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ if (uwb_rsv_match(rsv, src, drp_ie))
+ return rsv;
+ }
+
+ if (uwb_ie_drp_owner(drp_ie))
+ return uwb_rsv_new_target(rc, src, drp_ie);
+
+ return NULL;
+}
+
+/*
+ * Go through all the reservations and check for timeouts and (if
+ * necessary) update their DRP IEs.
+ *
+ * FIXME: look at building the SET_DRP_IE command here rather than
+ * having to rescan the list in uwb_rc_send_all_drp_ie().
+ */
+static bool uwb_rsv_update_all(struct uwb_rc *rc)
+{
+ struct uwb_rsv *rsv, *t;
+ bool ie_updated = false;
+
+ list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+ if (rsv->expired)
+ uwb_drp_handle_timeout(rsv);
+ if (!rsv->ie_valid) {
+ uwb_drp_ie_update(rsv);
+ ie_updated = true;
+ }
+ }
+
+ return ie_updated;
+}
+
+void uwb_rsv_sched_update(struct uwb_rc *rc)
+{
+ queue_work(rc->rsv_workq, &rc->rsv_update_work);
+}
+
+/*
+ * Update DRP IEs and, if necessary, the DRP Availability IE and send
+ * the updated IEs to the radio controller.
+ */
+static void uwb_rsv_update_work(struct work_struct *work)
+{
+ struct uwb_rc *rc = container_of(work, struct uwb_rc, rsv_update_work);
+ bool ie_updated;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ ie_updated = uwb_rsv_update_all(rc);
+
+ if (!rc->drp_avail.ie_valid) {
+ uwb_drp_avail_ie_update(rc);
+ ie_updated = true;
+ }
+
+ if (ie_updated)
+ uwb_rc_send_all_drp_ie(rc);
+
+ mutex_unlock(&rc->rsvs_mutex);
+}
+
+static void uwb_rsv_timer(unsigned long arg)
+{
+ struct uwb_rsv *rsv = (struct uwb_rsv *)arg;
+
+ rsv->expired = true;
+ uwb_rsv_sched_update(rsv->rc);
+}
+
+void uwb_rsv_init(struct uwb_rc *rc)
+{
+ INIT_LIST_HEAD(&rc->reservations);
+ mutex_init(&rc->rsvs_mutex);
+ INIT_WORK(&rc->rsv_update_work, uwb_rsv_update_work);
+
+ bitmap_complement(rc->uwb_dev.streams, rc->uwb_dev.streams, UWB_NUM_STREAMS);
+}
+
+int uwb_rsv_setup(struct uwb_rc *rc)
+{
+ char name[16];
+
+ snprintf(name, sizeof(name), "%s_rsvd", dev_name(&rc->uwb_dev.dev));
+ rc->rsv_workq = create_singlethread_workqueue(name);
+ if (rc->rsv_workq == NULL)
+ return -ENOMEM;
+
+ return 0;
+}
+
+void uwb_rsv_cleanup(struct uwb_rc *rc)
+{
+ struct uwb_rsv *rsv, *t;
+
+ mutex_lock(&rc->rsvs_mutex);
+ list_for_each_entry_safe(rsv, t, &rc->reservations, rc_node) {
+ uwb_rsv_remove(rsv);
+ }
+ mutex_unlock(&rc->rsvs_mutex);
+
+ cancel_work_sync(&rc->rsv_update_work);
+ destroy_workqueue(rc->rsv_workq);
+}
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Scanning management
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ *
+ * FIXME: docs
+ * FIXME: there are issues here on how BEACON and SCAN on USB RCI deal
+ * with each other. Currently seems that START_BEACON while
+ * SCAN_ONLY will cancel the scan, so we need to update the
+ * state here. Clarification request sent by email on
+ * 10/05/2005.
+ * 10/28/2005 No clear answer heard--maybe we'll hack the API
+ * so that when we start beaconing, if the HC is
+ * scanning in a mode not compatible with beaconing
+ * we just fail.
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include "uwb-internal.h"
+
+
+/**
+ * Start/stop scanning in a radio controller
+ *
+ * @rc: UWB Radio Controlller
+ * @channel: Channel to scan; encodings in WUSB1.0[Table 5.12]
+ * @type: Type of scanning to do.
+ * @bpst_offset: value at which to start scanning (if type ==
+ * UWB_SCAN_ONLY_STARTTIME)
+ * @returns: 0 if ok, < 0 errno code on error
+ *
+ * We put the command on kmalloc'ed memory as some arches cannot do
+ * USB from the stack. The reply event is copied from an stage buffer,
+ * so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
+ */
+int uwb_rc_scan(struct uwb_rc *rc,
+ unsigned channel, enum uwb_scan_type type,
+ unsigned bpst_offset)
+{
+ int result;
+ struct uwb_rc_cmd_scan *cmd;
+ struct uwb_rc_evt_confirm reply;
+
+ result = -ENOMEM;
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (cmd == NULL)
+ goto error_kzalloc;
+ mutex_lock(&rc->uwb_dev.mutex);
+ cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
+ cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SCAN);
+ cmd->bChannelNumber = channel;
+ cmd->bScanState = type;
+ cmd->wStartTime = cpu_to_le16(bpst_offset);
+ reply.rceb.bEventType = UWB_RC_CET_GENERAL;
+ reply.rceb.wEvent = UWB_RC_CMD_SCAN;
+ result = uwb_rc_cmd(rc, "SCAN", &cmd->rccb, sizeof(*cmd),
+ &reply.rceb, sizeof(reply));
+ if (result < 0)
+ goto error_cmd;
+ if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
+ dev_err(&rc->uwb_dev.dev,
+ "SCAN: command execution failed: %s (%d)\n",
+ uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
+ result = -EIO;
+ goto error_cmd;
+ }
+ rc->scanning = channel;
+ rc->scan_type = type;
+error_cmd:
+ mutex_unlock(&rc->uwb_dev.mutex);
+ kfree(cmd);
+error_kzalloc:
+ return result;
+}
+
+/*
+ * Print scanning state
+ */
+static ssize_t uwb_rc_scan_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ ssize_t result;
+
+ mutex_lock(&rc->uwb_dev.mutex);
+ result = sprintf(buf, "%d %d\n", rc->scanning, rc->scan_type);
+ mutex_unlock(&rc->uwb_dev.mutex);
+ return result;
+}
+
+/*
+ *
+ */
+static ssize_t uwb_rc_scan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+ struct uwb_rc *rc = uwb_dev->rc;
+ unsigned channel;
+ unsigned type;
+ unsigned bpst_offset = 0;
+ ssize_t result = -EINVAL;
+
+ result = sscanf(buf, "%u %u %u\n", &channel, &type, &bpst_offset);
+ if (result >= 2 && type < UWB_SCAN_TOP)
+ result = uwb_rc_scan(rc, channel, type, bpst_offset);
+
+ return result < 0 ? result : size;
+}
+
+/** Radio Control sysfs interface (declaration) */
+DEVICE_ATTR(scan, S_IRUGO | S_IWUSR, uwb_rc_scan_show, uwb_rc_scan_store);
--- /dev/null
+/*
+ * Bus for UWB Multi-interface Controller capabilities.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/sysfs.h>
+#include <linux/workqueue.h>
+#include <linux/uwb/umc.h>
+#include <linux/pci.h>
+
+static int umc_bus_unbind_helper(struct device *dev, void *data)
+{
+ struct device *parent = data;
+
+ if (dev->parent == parent && dev->driver)
+ device_release_driver(dev);
+ return 0;
+}
+
+/**
+ * umc_controller_reset - reset the whole UMC controller
+ * @umc: the UMC device for the radio controller.
+ *
+ * Drivers will be unbound from all UMC devices belonging to the
+ * controller and then the radio controller will be rebound. The
+ * radio controller is expected to do a full hardware reset when it is
+ * probed.
+ *
+ * If this is called while a probe() or remove() is in progress it
+ * will return -EAGAIN and not perform the reset.
+ */
+int umc_controller_reset(struct umc_dev *umc)
+{
+ struct device *parent = umc->dev.parent;
+ int ret;
+
+ if (down_trylock(&parent->sem))
+ return -EAGAIN;
+ bus_for_each_dev(&umc_bus_type, NULL, parent, umc_bus_unbind_helper);
+ ret = device_attach(&umc->dev);
+ if (ret == 1)
+ ret = 0;
+ up(&parent->sem);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(umc_controller_reset);
+
+/**
+ * umc_match_pci_id - match a UMC driver to a UMC device's parent PCI device.
+ * @umc_drv: umc driver with match_data pointing to a zero-terminated
+ * table of pci_device_id's.
+ * @umc: umc device whose parent is to be matched.
+ */
+int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc)
+{
+ const struct pci_device_id *id_table = umc_drv->match_data;
+ struct pci_dev *pci;
+
+ if (umc->dev.parent->bus != &pci_bus_type)
+ return 0;
+
+ pci = to_pci_dev(umc->dev.parent);
+ return pci_match_id(id_table, pci) != NULL;
+}
+EXPORT_SYMBOL_GPL(umc_match_pci_id);
+
+static int umc_bus_rescan_helper(struct device *dev, void *data)
+{
+ int ret = 0;
+
+ if (!dev->driver)
+ ret = device_attach(dev);
+
+ return ret < 0 ? ret : 0;
+}
+
+static void umc_bus_rescan(void)
+{
+ int err;
+
+ /*
+ * We can't use bus_rescan_devices() here as it deadlocks when
+ * it tries to retake the dev->parent semaphore.
+ */
+ err = bus_for_each_dev(&umc_bus_type, NULL, NULL, umc_bus_rescan_helper);
+ if (err < 0)
+ printk(KERN_WARNING "%s: rescan of bus failed: %d\n",
+ KBUILD_MODNAME, err);
+}
+
+static int umc_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct umc_dev *umc = to_umc_dev(dev);
+ struct umc_driver *umc_driver = to_umc_driver(drv);
+
+ if (umc->cap_id == umc_driver->cap_id) {
+ if (umc_driver->match)
+ return umc_driver->match(umc_driver, umc);
+ else
+ return 1;
+ }
+ return 0;
+}
+
+static int umc_device_probe(struct device *dev)
+{
+ struct umc_dev *umc;
+ struct umc_driver *umc_driver;
+ int err;
+
+ umc_driver = to_umc_driver(dev->driver);
+ umc = to_umc_dev(dev);
+
+ get_device(dev);
+ err = umc_driver->probe(umc);
+ if (err)
+ put_device(dev);
+ else
+ umc_bus_rescan();
+
+ return err;
+}
+
+static int umc_device_remove(struct device *dev)
+{
+ struct umc_dev *umc;
+ struct umc_driver *umc_driver;
+
+ umc_driver = to_umc_driver(dev->driver);
+ umc = to_umc_dev(dev);
+
+ umc_driver->remove(umc);
+ put_device(dev);
+ return 0;
+}
+
+static int umc_device_suspend(struct device *dev, pm_message_t state)
+{
+ struct umc_dev *umc;
+ struct umc_driver *umc_driver;
+ int err = 0;
+
+ umc = to_umc_dev(dev);
+
+ if (dev->driver) {
+ umc_driver = to_umc_driver(dev->driver);
+ if (umc_driver->suspend)
+ err = umc_driver->suspend(umc, state);
+ }
+ return err;
+}
+
+static int umc_device_resume(struct device *dev)
+{
+ struct umc_dev *umc;
+ struct umc_driver *umc_driver;
+ int err = 0;
+
+ umc = to_umc_dev(dev);
+
+ if (dev->driver) {
+ umc_driver = to_umc_driver(dev->driver);
+ if (umc_driver->resume)
+ err = umc_driver->resume(umc);
+ }
+ return err;
+}
+
+static ssize_t capability_id_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct umc_dev *umc = to_umc_dev(dev);
+
+ return sprintf(buf, "0x%02x\n", umc->cap_id);
+}
+
+static ssize_t version_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct umc_dev *umc = to_umc_dev(dev);
+
+ return sprintf(buf, "0x%04x\n", umc->version);
+}
+
+static struct device_attribute umc_dev_attrs[] = {
+ __ATTR_RO(capability_id),
+ __ATTR_RO(version),
+ __ATTR_NULL,
+};
+
+struct bus_type umc_bus_type = {
+ .name = "umc",
+ .match = umc_bus_match,
+ .probe = umc_device_probe,
+ .remove = umc_device_remove,
+ .suspend = umc_device_suspend,
+ .resume = umc_device_resume,
+ .dev_attrs = umc_dev_attrs,
+};
+EXPORT_SYMBOL_GPL(umc_bus_type);
+
+static int __init umc_bus_init(void)
+{
+ return bus_register(&umc_bus_type);
+}
+module_init(umc_bus_init);
+
+static void __exit umc_bus_exit(void)
+{
+ bus_unregister(&umc_bus_type);
+}
+module_exit(umc_bus_exit);
+
+MODULE_DESCRIPTION("UWB Multi-interface Controller capability bus");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * UWB Multi-interface Controller device management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb/umc.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+static void umc_device_release(struct device *dev)
+{
+ struct umc_dev *umc = to_umc_dev(dev);
+
+ kfree(umc);
+}
+
+/**
+ * umc_device_create - allocate a child UMC device
+ * @parent: parent of the new UMC device.
+ * @n: index of the new device.
+ *
+ * The new UMC device will have a bus ID of the parent with '-n'
+ * appended.
+ */
+struct umc_dev *umc_device_create(struct device *parent, int n)
+{
+ struct umc_dev *umc;
+
+ umc = kzalloc(sizeof(struct umc_dev), GFP_KERNEL);
+ if (umc) {
+ snprintf(umc->dev.bus_id, sizeof(umc->dev.bus_id), "%s-%d",
+ parent->bus_id, n);
+ umc->dev.parent = parent;
+ umc->dev.bus = &umc_bus_type;
+ umc->dev.release = umc_device_release;
+
+ umc->dev.dma_mask = parent->dma_mask;
+ }
+ return umc;
+}
+EXPORT_SYMBOL_GPL(umc_device_create);
+
+/**
+ * umc_device_register - register a UMC device
+ * @umc: pointer to the UMC device
+ *
+ * The memory resource for the UMC device is acquired and the device
+ * registered with the system.
+ */
+int umc_device_register(struct umc_dev *umc)
+{
+ int err;
+
+ d_fnstart(3, &umc->dev, "(umc_dev %p)\n", umc);
+
+ err = request_resource(umc->resource.parent, &umc->resource);
+ if (err < 0) {
+ dev_err(&umc->dev, "can't allocate resource range "
+ "%016Lx to %016Lx: %d\n",
+ (unsigned long long)umc->resource.start,
+ (unsigned long long)umc->resource.end,
+ err);
+ goto error_request_resource;
+ }
+
+ err = device_register(&umc->dev);
+ if (err < 0)
+ goto error_device_register;
+ d_fnend(3, &umc->dev, "(umc_dev %p) = 0\n", umc);
+ return 0;
+
+error_device_register:
+ release_resource(&umc->resource);
+error_request_resource:
+ d_fnend(3, &umc->dev, "(umc_dev %p) = %d\n", umc, err);
+ return err;
+}
+EXPORT_SYMBOL_GPL(umc_device_register);
+
+/**
+ * umc_device_unregister - unregister a UMC device
+ * @umc: pointer to the UMC device
+ *
+ * First we unregister the device, make sure the driver can do it's
+ * resource release thing and then we try to release any left over
+ * resources. We take a ref to the device, to make sure it doesn't
+ * dissapear under our feet.
+ */
+void umc_device_unregister(struct umc_dev *umc)
+{
+ struct device *dev;
+ if (!umc)
+ return;
+ dev = get_device(&umc->dev);
+ d_fnstart(3, dev, "(umc_dev %p)\n", umc);
+ device_unregister(&umc->dev);
+ release_resource(&umc->resource);
+ d_fnend(3, dev, "(umc_dev %p) = void\n", umc);
+ put_device(dev);
+}
+EXPORT_SYMBOL_GPL(umc_device_unregister);
--- /dev/null
+/*
+ * UWB Multi-interface Controller driver management.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/kernel.h>
+#include <linux/uwb/umc.h>
+
+int __umc_driver_register(struct umc_driver *umc_drv, struct module *module,
+ const char *mod_name)
+{
+ umc_drv->driver.name = umc_drv->name;
+ umc_drv->driver.owner = module;
+ umc_drv->driver.mod_name = mod_name;
+ umc_drv->driver.bus = &umc_bus_type;
+
+ return driver_register(&umc_drv->driver);
+}
+EXPORT_SYMBOL_GPL(__umc_driver_register);
+
+/**
+ * umc_driver_register - unregister a UMC capabiltity driver.
+ * @umc_drv: pointer to the driver.
+ */
+void umc_driver_unregister(struct umc_driver *umc_drv)
+{
+ driver_unregister(&umc_drv->driver);
+}
+EXPORT_SYMBOL_GPL(umc_driver_unregister);
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Debug support
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc
+ */
+
+#include <linux/spinlock.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/notifier.h>
+#include <linux/device.h>
+#include <linux/debugfs.h>
+#include <linux/uaccess.h>
+#include <linux/seq_file.h>
+
+#include <linux/uwb/debug-cmd.h>
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+#include "uwb-internal.h"
+
+void dump_bytes(struct device *dev, const void *_buf, size_t rsize)
+{
+ const char *buf = _buf;
+ char line[32];
+ size_t offset = 0;
+ int cnt, cnt2;
+ for (cnt = 0; cnt < rsize; cnt += 8) {
+ size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8;
+ for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) {
+ offset += scnprintf(line + offset, sizeof(line) - offset,
+ "%02x ", buf[cnt + cnt2] & 0xff);
+ }
+ if (dev)
+ dev_info(dev, "%s\n", line);
+ else
+ printk(KERN_INFO "%s\n", line);
+ }
+}
+EXPORT_SYMBOL_GPL(dump_bytes);
+
+/*
+ * Debug interface
+ *
+ * Per radio controller debugfs files (in uwb/uwbN/):
+ *
+ * command: Flexible command interface (see <linux/uwb/debug-cmd.h>).
+ *
+ * reservations: information on reservations.
+ *
+ * accept: Set to true (Y or 1) to accept reservation requests from
+ * peers.
+ *
+ * drp_avail: DRP availability information.
+ */
+
+struct uwb_dbg {
+ struct uwb_pal pal;
+
+ u32 accept;
+ struct list_head rsvs;
+
+ struct dentry *root_d;
+ struct dentry *command_f;
+ struct dentry *reservations_f;
+ struct dentry *accept_f;
+ struct dentry *drp_avail_f;
+};
+
+static struct dentry *root_dir;
+
+static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+ struct device *dev = &rc->uwb_dev.dev;
+ struct uwb_dev_addr devaddr;
+ char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+
+ uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+ if (rsv->target.type == UWB_RSV_TARGET_DEV)
+ devaddr = rsv->target.dev->dev_addr;
+ else
+ devaddr = rsv->target.devaddr;
+ uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+ dev_dbg(dev, "debug: rsv %s -> %s: %s\n",
+ owner, target, uwb_rsv_state_str(rsv->state));
+}
+
+static int cmd_rsv_establish(struct uwb_rc *rc,
+ struct uwb_dbg_cmd_rsv_establish *cmd)
+{
+ struct uwb_mac_addr macaddr;
+ struct uwb_rsv *rsv;
+ struct uwb_dev *target;
+ int ret;
+
+ memcpy(&macaddr, cmd->target, sizeof(macaddr));
+ target = uwb_dev_get_by_macaddr(rc, &macaddr);
+ if (target == NULL)
+ return -ENODEV;
+
+ rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL);
+ if (rsv == NULL) {
+ uwb_dev_put(target);
+ return -ENOMEM;
+ }
+
+ rsv->owner = &rc->uwb_dev;
+ rsv->target.type = UWB_RSV_TARGET_DEV;
+ rsv->target.dev = target;
+ rsv->type = cmd->type;
+ rsv->max_mas = cmd->max_mas;
+ rsv->min_mas = cmd->min_mas;
+ rsv->sparsity = cmd->sparsity;
+
+ ret = uwb_rsv_establish(rsv);
+ if (ret)
+ uwb_rsv_destroy(rsv);
+ else
+ list_add_tail(&rsv->pal_node, &rc->dbg->rsvs);
+
+ return ret;
+}
+
+static int cmd_rsv_terminate(struct uwb_rc *rc,
+ struct uwb_dbg_cmd_rsv_terminate *cmd)
+{
+ struct uwb_rsv *rsv, *found = NULL;
+ int i = 0;
+
+ list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) {
+ if (i == cmd->index) {
+ found = rsv;
+ break;
+ }
+ }
+ if (!found)
+ return -EINVAL;
+
+ list_del(&found->pal_node);
+ uwb_rsv_terminate(found);
+
+ return 0;
+}
+
+static int command_open(struct inode *inode, struct file *file)
+{
+ file->private_data = inode->i_private;
+
+ return 0;
+}
+
+static ssize_t command_write(struct file *file, const char __user *buf,
+ size_t len, loff_t *off)
+{
+ struct uwb_rc *rc = file->private_data;
+ struct uwb_dbg_cmd cmd;
+ int ret;
+
+ if (len != sizeof(struct uwb_dbg_cmd))
+ return -EINVAL;
+
+ if (copy_from_user(&cmd, buf, len) != 0)
+ return -EFAULT;
+
+ switch (cmd.type) {
+ case UWB_DBG_CMD_RSV_ESTABLISH:
+ ret = cmd_rsv_establish(rc, &cmd.rsv_establish);
+ break;
+ case UWB_DBG_CMD_RSV_TERMINATE:
+ ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return ret < 0 ? ret : len;
+}
+
+static struct file_operations command_fops = {
+ .open = command_open,
+ .write = command_write,
+ .read = NULL,
+ .llseek = no_llseek,
+ .owner = THIS_MODULE,
+};
+
+static int reservations_print(struct seq_file *s, void *p)
+{
+ struct uwb_rc *rc = s->private;
+ struct uwb_rsv *rsv;
+
+ mutex_lock(&rc->rsvs_mutex);
+
+ list_for_each_entry(rsv, &rc->reservations, rc_node) {
+ struct uwb_dev_addr devaddr;
+ char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
+ bool is_owner;
+ char buf[72];
+
+ uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
+ if (rsv->target.type == UWB_RSV_TARGET_DEV) {
+ devaddr = rsv->target.dev->dev_addr;
+ is_owner = &rc->uwb_dev == rsv->owner;
+ } else {
+ devaddr = rsv->target.devaddr;
+ is_owner = true;
+ }
+ uwb_dev_addr_print(target, sizeof(target), &devaddr);
+
+ seq_printf(s, "%c %s -> %s: %s\n",
+ is_owner ? 'O' : 'T',
+ owner, target, uwb_rsv_state_str(rsv->state));
+ seq_printf(s, " stream: %d type: %s\n",
+ rsv->stream, uwb_rsv_type_str(rsv->type));
+ bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
+ seq_printf(s, " %s\n", buf);
+ }
+
+ mutex_unlock(&rc->rsvs_mutex);
+
+ return 0;
+}
+
+static int reservations_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, reservations_print, inode->i_private);
+}
+
+static struct file_operations reservations_fops = {
+ .open = reservations_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static int drp_avail_print(struct seq_file *s, void *p)
+{
+ struct uwb_rc *rc = s->private;
+ char buf[72];
+
+ bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.global, UWB_NUM_MAS);
+ seq_printf(s, "global: %s\n", buf);
+ bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.local, UWB_NUM_MAS);
+ seq_printf(s, "local: %s\n", buf);
+ bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.pending, UWB_NUM_MAS);
+ seq_printf(s, "pending: %s\n", buf);
+
+ return 0;
+}
+
+static int drp_avail_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, drp_avail_print, inode->i_private);
+}
+
+static struct file_operations drp_avail_fops = {
+ .open = drp_avail_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+ .owner = THIS_MODULE,
+};
+
+static void uwb_dbg_new_rsv(struct uwb_rsv *rsv)
+{
+ struct uwb_rc *rc = rsv->rc;
+
+ if (rc->dbg->accept)
+ uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL);
+}
+
+/**
+ * uwb_dbg_add_rc - add a debug interface for a radio controller
+ * @rc: the radio controller
+ */
+void uwb_dbg_add_rc(struct uwb_rc *rc)
+{
+ rc->dbg = kzalloc(sizeof(struct uwb_dbg), GFP_KERNEL);
+ if (rc->dbg == NULL)
+ return;
+
+ INIT_LIST_HEAD(&rc->dbg->rsvs);
+
+ uwb_pal_init(&rc->dbg->pal);
+ rc->dbg->pal.new_rsv = uwb_dbg_new_rsv;
+ uwb_pal_register(rc, &rc->dbg->pal);
+ if (root_dir) {
+ rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev),
+ root_dir);
+ rc->dbg->command_f = debugfs_create_file("command", 0200,
+ rc->dbg->root_d, rc,
+ &command_fops);
+ rc->dbg->reservations_f = debugfs_create_file("reservations", 0444,
+ rc->dbg->root_d, rc,
+ &reservations_fops);
+ rc->dbg->accept_f = debugfs_create_bool("accept", 0644,
+ rc->dbg->root_d,
+ &rc->dbg->accept);
+ rc->dbg->drp_avail_f = debugfs_create_file("drp_avail", 0444,
+ rc->dbg->root_d, rc,
+ &drp_avail_fops);
+ }
+}
+
+/**
+ * uwb_dbg_add_rc - remove a radio controller's debug interface
+ * @rc: the radio controller
+ */
+void uwb_dbg_del_rc(struct uwb_rc *rc)
+{
+ struct uwb_rsv *rsv, *t;
+
+ if (rc->dbg == NULL)
+ return;
+
+ list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) {
+ uwb_rsv_destroy(rsv);
+ }
+
+ uwb_pal_unregister(rc, &rc->dbg->pal);
+
+ if (root_dir) {
+ debugfs_remove(rc->dbg->drp_avail_f);
+ debugfs_remove(rc->dbg->accept_f);
+ debugfs_remove(rc->dbg->reservations_f);
+ debugfs_remove(rc->dbg->command_f);
+ debugfs_remove(rc->dbg->root_d);
+ }
+}
+
+/**
+ * uwb_dbg_exit - initialize the debug interface sub-module
+ */
+void uwb_dbg_init(void)
+{
+ root_dir = debugfs_create_dir("uwb", NULL);
+}
+
+/**
+ * uwb_dbg_exit - clean-up the debug interface sub-module
+ */
+void uwb_dbg_exit(void)
+{
+ debugfs_remove(root_dir);
+}
--- /dev/null
+/*
+ * Ultra Wide Band
+ * UWB internal API
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ * This contains most of the internal API for UWB. This is stuff used
+ * across the stack that of course, is of no interest to the rest.
+ *
+ * Some parts might end up going public (like uwb_rc_*())...
+ */
+
+#ifndef __UWB_INTERNAL_H__
+#define __UWB_INTERNAL_H__
+
+#include <linux/version.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/uwb.h>
+#include <linux/mutex.h>
+
+struct uwb_beca_e;
+
+/* General device API */
+extern void uwb_dev_init(struct uwb_dev *uwb_dev);
+extern int __uwb_dev_offair(struct uwb_dev *, struct uwb_rc *);
+extern int uwb_dev_add(struct uwb_dev *uwb_dev, struct device *parent_dev,
+ struct uwb_rc *parent_rc);
+extern void uwb_dev_rm(struct uwb_dev *uwb_dev);
+extern void uwbd_dev_onair(struct uwb_rc *, struct uwb_beca_e *);
+extern void uwbd_dev_offair(struct uwb_beca_e *);
+void uwb_notify(struct uwb_rc *rc, struct uwb_dev *uwb_dev, enum uwb_notifs event);
+
+/* General UWB Radio Controller Internal API */
+extern struct uwb_rc *__uwb_rc_try_get(struct uwb_rc *);
+static inline struct uwb_rc *__uwb_rc_get(struct uwb_rc *rc)
+{
+ uwb_dev_get(&rc->uwb_dev);
+ return rc;
+}
+
+static inline void __uwb_rc_put(struct uwb_rc *rc)
+{
+ uwb_dev_put(&rc->uwb_dev);
+}
+
+extern int uwb_rc_reset(struct uwb_rc *rc);
+extern int uwb_rc_beacon(struct uwb_rc *rc,
+ int channel, unsigned bpst_offset);
+extern int uwb_rc_scan(struct uwb_rc *rc,
+ unsigned channel, enum uwb_scan_type type,
+ unsigned bpst_offset);
+extern int uwb_rc_send_all_drp_ie(struct uwb_rc *rc);
+extern ssize_t uwb_rc_print_IEs(struct uwb_rc *rc, char *, size_t);
+extern void uwb_rc_ie_init(struct uwb_rc *);
+extern void uwb_rc_ie_init(struct uwb_rc *);
+extern ssize_t uwb_rc_ie_setup(struct uwb_rc *);
+extern void uwb_rc_ie_release(struct uwb_rc *);
+extern int uwb_rc_ie_add(struct uwb_rc *,
+ const struct uwb_ie_hdr *, size_t);
+extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
+
+extern const char *uwb_rc_strerror(unsigned code);
+
+/*
+ * Time to wait for a response to an RC command.
+ *
+ * Some commands can take a long time to response. e.g., START_BEACON
+ * may scan for several superframes before joining an existing beacon
+ * group and this can take around 600 ms.
+ */
+#define UWB_RC_CMD_TIMEOUT_MS 1000 /* ms */
+
+/*
+ * Notification/Event Handlers
+ */
+
+struct uwb_rc_neh;
+
+void uwb_rc_neh_create(struct uwb_rc *rc);
+void uwb_rc_neh_destroy(struct uwb_rc *rc);
+
+struct uwb_rc_neh *uwb_rc_neh_add(struct uwb_rc *rc, struct uwb_rccb *cmd,
+ u8 expected_type, u16 expected_event,
+ uwb_rc_cmd_cb_f cb, void *arg);
+void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh);
+void uwb_rc_neh_arm(struct uwb_rc *rc, struct uwb_rc_neh *neh);
+void uwb_rc_neh_put(struct uwb_rc_neh *neh);
+
+/* Event size tables */
+extern int uwb_est_create(void);
+extern void uwb_est_destroy(void);
+
+
+/*
+ * UWB Events & management daemon
+ */
+
+/**
+ * enum uwb_event_type - types of UWB management daemon events
+ *
+ * The UWB management daemon (uwbd) can receive two types of events:
+ * UWB_EVT_TYPE_NOTIF - notification from the radio controller.
+ * UWB_EVT_TYPE_MSG - a simple message.
+ */
+enum uwb_event_type {
+ UWB_EVT_TYPE_NOTIF,
+ UWB_EVT_TYPE_MSG,
+};
+
+/**
+ * struct uwb_event_notif - an event for a radio controller notification
+ * @size: Size of the buffer (ie: Guaranteed to contain at least
+ * a full 'struct uwb_rceb')
+ * @rceb: Pointer to a kmalloced() event payload
+ */
+struct uwb_event_notif {
+ size_t size;
+ struct uwb_rceb *rceb;
+};
+
+/**
+ * enum uwb_event_message - an event for a message for asynchronous processing
+ *
+ * UWB_EVT_MSG_RESET - reset the radio controller and all PAL hardware.
+ */
+enum uwb_event_message {
+ UWB_EVT_MSG_RESET,
+};
+
+/**
+ * UWB Event
+ * @rc: Radio controller that emitted the event (referenced)
+ * @ts_jiffies: Timestamp, when was it received
+ * @type: This event's type.
+ */
+struct uwb_event {
+ struct list_head list_node;
+ struct uwb_rc *rc;
+ unsigned long ts_jiffies;
+ enum uwb_event_type type;
+ union {
+ struct uwb_event_notif notif;
+ enum uwb_event_message message;
+ };
+};
+
+extern void uwbd_start(void);
+extern void uwbd_stop(void);
+extern struct uwb_event *uwb_event_alloc(size_t, gfp_t gfp_mask);
+extern void uwbd_event_queue(struct uwb_event *);
+void uwbd_flush(struct uwb_rc *rc);
+
+/* UWB event handlers */
+extern int uwbd_evt_handle_rc_beacon(struct uwb_event *);
+extern int uwbd_evt_handle_rc_beacon_size(struct uwb_event *);
+extern int uwbd_evt_handle_rc_bpoie_change(struct uwb_event *);
+extern int uwbd_evt_handle_rc_bp_slot_change(struct uwb_event *);
+extern int uwbd_evt_handle_rc_drp(struct uwb_event *);
+extern int uwbd_evt_handle_rc_drp_avail(struct uwb_event *);
+
+int uwbd_msg_handle_reset(struct uwb_event *evt);
+
+
+/*
+ * Address management
+ */
+int uwb_rc_dev_addr_assign(struct uwb_rc *rc);
+int uwbd_evt_handle_rc_dev_addr_conflict(struct uwb_event *evt);
+
+/*
+ * UWB Beacon Cache
+ *
+ * Each beacon we received is kept in a cache--when we receive that
+ * beacon consistently, that means there is a new device that we have
+ * to add to the system.
+ */
+
+extern unsigned long beacon_timeout_ms;
+
+/** Beacon cache list */
+struct uwb_beca {
+ struct list_head list;
+ size_t entries;
+ struct mutex mutex;
+};
+
+extern struct uwb_beca uwb_beca;
+
+/**
+ * Beacon cache entry
+ *
+ * @jiffies_refresh: last time a beacon was received that refreshed
+ * this cache entry.
+ * @uwb_dev: device connected to this beacon. This pointer is not
+ * safe, you need to get it with uwb_dev_try_get()
+ *
+ * @hits: how many time we have seen this beacon since last time we
+ * cleared it
+ */
+struct uwb_beca_e {
+ struct mutex mutex;
+ struct kref refcnt;
+ struct list_head node;
+ struct uwb_mac_addr *mac_addr;
+ struct uwb_dev_addr dev_addr;
+ u8 hits;
+ unsigned long ts_jiffies;
+ struct uwb_dev *uwb_dev;
+ struct uwb_rc_evt_beacon *be;
+ struct stats lqe_stats, rssi_stats; /* radio statistics */
+};
+struct uwb_beacon_frame;
+extern ssize_t uwb_bce_print_IEs(struct uwb_dev *, struct uwb_beca_e *,
+ char *, size_t);
+extern struct uwb_beca_e *__uwb_beca_add(struct uwb_rc_evt_beacon *,
+ struct uwb_beacon_frame *,
+ unsigned long);
+
+extern void uwb_bce_kfree(struct kref *_bce);
+static inline void uwb_bce_get(struct uwb_beca_e *bce)
+{
+ kref_get(&bce->refcnt);
+}
+static inline void uwb_bce_put(struct uwb_beca_e *bce)
+{
+ kref_put(&bce->refcnt, uwb_bce_kfree);
+}
+extern void uwb_beca_purge(void);
+extern void uwb_beca_release(void);
+
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+ const struct uwb_dev_addr *devaddr);
+struct uwb_dev *uwb_dev_get_by_macaddr(struct uwb_rc *rc,
+ const struct uwb_mac_addr *macaddr);
+
+/* -- UWB Sysfs representation */
+extern struct class uwb_rc_class;
+extern struct device_attribute dev_attr_mac_address;
+extern struct device_attribute dev_attr_beacon;
+extern struct device_attribute dev_attr_scan;
+
+/* -- DRP Bandwidth allocator: bandwidth allocations, reservations, DRP */
+void uwb_rsv_init(struct uwb_rc *rc);
+int uwb_rsv_setup(struct uwb_rc *rc);
+void uwb_rsv_cleanup(struct uwb_rc *rc);
+
+void uwb_rsv_set_state(struct uwb_rsv *rsv, enum uwb_rsv_state new_state);
+void uwb_rsv_remove(struct uwb_rsv *rsv);
+struct uwb_rsv *uwb_rsv_find(struct uwb_rc *rc, struct uwb_dev *src,
+ struct uwb_ie_drp *drp_ie);
+void uwb_rsv_sched_update(struct uwb_rc *rc);
+
+void uwb_drp_handle_timeout(struct uwb_rsv *rsv);
+int uwb_drp_ie_update(struct uwb_rsv *rsv);
+void uwb_drp_ie_to_bm(struct uwb_mas_bm *bm, const struct uwb_ie_drp *drp_ie);
+
+void uwb_drp_avail_init(struct uwb_rc *rc);
+int uwb_drp_avail_reserve_pending(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_reserve(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_release(struct uwb_rc *rc, struct uwb_mas_bm *mas);
+void uwb_drp_avail_ie_update(struct uwb_rc *rc);
+
+/* -- PAL support */
+void uwb_rc_pal_init(struct uwb_rc *rc);
+
+/* -- Misc */
+
+extern ssize_t uwb_mac_frame_hdr_print(char *, size_t,
+ const struct uwb_mac_frame_hdr *);
+
+/* -- Debug interface */
+void uwb_dbg_init(void);
+void uwb_dbg_exit(void);
+void uwb_dbg_add_rc(struct uwb_rc *rc);
+void uwb_dbg_del_rc(struct uwb_rc *rc);
+
+/* Workarounds for version specific stuff */
+
+static inline void uwb_dev_lock(struct uwb_dev *uwb_dev)
+{
+ down(&uwb_dev->dev.sem);
+}
+
+static inline void uwb_dev_unlock(struct uwb_dev *uwb_dev)
+{
+ up(&uwb_dev->dev.sem);
+}
+
+#endif /* #ifndef __UWB_INTERNAL_H__ */
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Neighborhood Management Daemon
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * This daemon takes care of maintaing information that describes the
+ * UWB neighborhood that the radios in this machine can see. It also
+ * keeps a tab of which devices are visible, makes sure each HC sits
+ * on a different channel to avoid interfering, etc.
+ *
+ * Different drivers (radio controller, device, any API in general)
+ * communicate with this daemon through an event queue. Daemon wakes
+ * up, takes a list of events and handles them one by one; handling
+ * function is extracted from a table based on the event's type and
+ * subtype. Events are freed only if the handling function says so.
+ *
+ * . Lock protecting the event list has to be an spinlock and locked
+ * with IRQSAVE because it might be called from an interrupt
+ * context (ie: when events arrive and the notification drops
+ * down from the ISR).
+ *
+ * . UWB radio controller drivers queue events to the daemon using
+ * uwbd_event_queue(). They just get the event, chew it to make it
+ * look like UWBD likes it and pass it in a buffer allocated with
+ * uwb_event_alloc().
+ *
+ * EVENTS
+ *
+ * Events have a type, a subtype, a lenght, some other stuff and the
+ * data blob, which depends on the event. The header is 'struct
+ * uwb_event'; for payloads, see 'struct uwbd_evt_*'.
+ *
+ * EVENT HANDLER TABLES
+ *
+ * To find a handling function for an event, the type is used to index
+ * a subtype-table in the type-table. The subtype-table is indexed
+ * with the subtype to get the function that handles the event. Start
+ * with the main type-table 'uwbd_evt_type_handler'.
+ *
+ * DEVICES
+ *
+ * Devices are created when a bunch of beacons have been received and
+ * it is stablished that the device has stable radio presence. CREATED
+ * only, not configured. Devices are ONLY configured when an
+ * Application-Specific IE Probe is receieved, in which the device
+ * declares which Protocol ID it groks. Then the device is CONFIGURED
+ * (and the driver->probe() stuff of the device model is invoked).
+ *
+ * Devices are considered disconnected when a certain number of
+ * beacons are not received in an amount of time.
+ *
+ * Handler functions are called normally uwbd_evt_handle_*().
+ */
+
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/freezer.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 1
+#include <linux/uwb/debug.h>
+
+
+/**
+ * UWBD Event handler function signature
+ *
+ * Return !0 if the event needs not to be freed (ie the handler
+ * takes/took care of it). 0 means the daemon code will free the
+ * event.
+ *
+ * @evt->rc is already referenced and guaranteed to exist. See
+ * uwb_evt_handle().
+ */
+typedef int (*uwbd_evt_handler_f)(struct uwb_event *);
+
+/**
+ * Properties of a UWBD event
+ *
+ * @handler: the function that will handle this event
+ * @name: text name of event
+ */
+struct uwbd_event {
+ uwbd_evt_handler_f handler;
+ const char *name;
+};
+
+/** Table of handlers for and properties of the UWBD Radio Control Events */
+static
+struct uwbd_event uwbd_events[] = {
+ [UWB_RC_EVT_BEACON] = {
+ .handler = uwbd_evt_handle_rc_beacon,
+ .name = "BEACON_RECEIVED"
+ },
+ [UWB_RC_EVT_BEACON_SIZE] = {
+ .handler = uwbd_evt_handle_rc_beacon_size,
+ .name = "BEACON_SIZE_CHANGE"
+ },
+ [UWB_RC_EVT_BPOIE_CHANGE] = {
+ .handler = uwbd_evt_handle_rc_bpoie_change,
+ .name = "BPOIE_CHANGE"
+ },
+ [UWB_RC_EVT_BP_SLOT_CHANGE] = {
+ .handler = uwbd_evt_handle_rc_bp_slot_change,
+ .name = "BP_SLOT_CHANGE"
+ },
+ [UWB_RC_EVT_DRP_AVAIL] = {
+ .handler = uwbd_evt_handle_rc_drp_avail,
+ .name = "DRP_AVAILABILITY_CHANGE"
+ },
+ [UWB_RC_EVT_DRP] = {
+ .handler = uwbd_evt_handle_rc_drp,
+ .name = "DRP"
+ },
+ [UWB_RC_EVT_DEV_ADDR_CONFLICT] = {
+ .handler = uwbd_evt_handle_rc_dev_addr_conflict,
+ .name = "DEV_ADDR_CONFLICT",
+ },
+};
+
+
+
+struct uwbd_evt_type_handler {
+ const char *name;
+ struct uwbd_event *uwbd_events;
+ size_t size;
+};
+
+#define UWBD_EVT_TYPE_HANDLER(n,a) { \
+ .name = (n), \
+ .uwbd_events = (a), \
+ .size = sizeof(a)/sizeof((a)[0]) \
+}
+
+
+/** Table of handlers for each UWBD Event type. */
+static
+struct uwbd_evt_type_handler uwbd_evt_type_handlers[] = {
+ [UWB_RC_CET_GENERAL] = UWBD_EVT_TYPE_HANDLER("RC", uwbd_events)
+};
+
+static const
+size_t uwbd_evt_type_handlers_len =
+ sizeof(uwbd_evt_type_handlers) / sizeof(uwbd_evt_type_handlers[0]);
+
+static const struct uwbd_event uwbd_message_handlers[] = {
+ [UWB_EVT_MSG_RESET] = {
+ .handler = uwbd_msg_handle_reset,
+ .name = "reset",
+ },
+};
+
+static DEFINE_MUTEX(uwbd_event_mutex);
+
+/**
+ * Handle an URC event passed to the UWB Daemon
+ *
+ * @evt: the event to handle
+ * @returns: 0 if the event can be kfreed, !0 on the contrary
+ * (somebody else took ownership) [coincidentally, returning
+ * a <0 errno code will free it :)].
+ *
+ * Looks up the two indirection tables (one for the type, one for the
+ * subtype) to decide which function handles it and then calls the
+ * handler.
+ *
+ * The event structure passed to the event handler has the radio
+ * controller in @evt->rc referenced. The reference will be dropped
+ * once the handler returns, so if it needs it for longer (async),
+ * it'll need to take another one.
+ */
+static
+int uwbd_event_handle_urc(struct uwb_event *evt)
+{
+ struct uwbd_evt_type_handler *type_table;
+ uwbd_evt_handler_f handler;
+ u8 type, context;
+ u16 event;
+
+ type = evt->notif.rceb->bEventType;
+ event = le16_to_cpu(evt->notif.rceb->wEvent);
+ context = evt->notif.rceb->bEventContext;
+
+ if (type > uwbd_evt_type_handlers_len) {
+ printk(KERN_ERR "UWBD: event type %u: unknown (too high)\n", type);
+ return -EINVAL;
+ }
+ type_table = &uwbd_evt_type_handlers[type];
+ if (type_table->uwbd_events == NULL) {
+ printk(KERN_ERR "UWBD: event type %u: unknown\n", type);
+ return -EINVAL;
+ }
+ if (event > type_table->size) {
+ printk(KERN_ERR "UWBD: event %s[%u]: unknown (too high)\n",
+ type_table->name, event);
+ return -EINVAL;
+ }
+ handler = type_table->uwbd_events[event].handler;
+ if (handler == NULL) {
+ printk(KERN_ERR "UWBD: event %s[%u]: unknown\n", type_table->name, event);
+ return -EINVAL;
+ }
+ return (*handler)(evt);
+}
+
+static void uwbd_event_handle_message(struct uwb_event *evt)
+{
+ struct uwb_rc *rc;
+ int result;
+
+ rc = evt->rc;
+
+ if (evt->message < 0 || evt->message >= ARRAY_SIZE(uwbd_message_handlers)) {
+ dev_err(&rc->uwb_dev.dev, "UWBD: invalid message type %d\n", evt->message);
+ return;
+ }
+
+ /* If this is a reset event we need to drop the
+ * uwbd_event_mutex or it deadlocks when the reset handler
+ * attempts to flush the uwbd events. */
+ if (evt->message == UWB_EVT_MSG_RESET)
+ mutex_unlock(&uwbd_event_mutex);
+
+ result = uwbd_message_handlers[evt->message].handler(evt);
+ if (result < 0)
+ dev_err(&rc->uwb_dev.dev, "UWBD: '%s' message failed: %d\n",
+ uwbd_message_handlers[evt->message].name, result);
+
+ if (evt->message == UWB_EVT_MSG_RESET)
+ mutex_lock(&uwbd_event_mutex);
+}
+
+static void uwbd_event_handle(struct uwb_event *evt)
+{
+ struct uwb_rc *rc;
+ int should_keep;
+
+ rc = evt->rc;
+
+ if (rc->ready) {
+ switch (evt->type) {
+ case UWB_EVT_TYPE_NOTIF:
+ should_keep = uwbd_event_handle_urc(evt);
+ if (should_keep <= 0)
+ kfree(evt->notif.rceb);
+ break;
+ case UWB_EVT_TYPE_MSG:
+ uwbd_event_handle_message(evt);
+ break;
+ default:
+ dev_err(&rc->uwb_dev.dev, "UWBD: invalid event type %d\n", evt->type);
+ break;
+ }
+ }
+
+ __uwb_rc_put(rc); /* for the __uwb_rc_get() in uwb_rc_notif_cb() */
+}
+/* The UWB Daemon */
+
+
+/** Daemon's PID: used to decide if we can queue or not */
+static int uwbd_pid;
+/** Daemon's task struct for managing the kthread */
+static struct task_struct *uwbd_task;
+/** Daemon's waitqueue for waiting for new events */
+static DECLARE_WAIT_QUEUE_HEAD(uwbd_wq);
+/** Daemon's list of events; we queue/dequeue here */
+static struct list_head uwbd_event_list = LIST_HEAD_INIT(uwbd_event_list);
+/** Daemon's list lock to protect concurent access */
+static DEFINE_SPINLOCK(uwbd_event_list_lock);
+
+
+/**
+ * UWB Daemon
+ *
+ * Listens to all UWB notifications and takes care to track the state
+ * of the UWB neighboorhood for the kernel. When we do a run, we
+ * spinlock, move the list to a private copy and release the
+ * lock. Hold it as little as possible. Not a conflict: it is
+ * guaranteed we own the events in the private list.
+ *
+ * FIXME: should change so we don't have a 1HZ timer all the time, but
+ * only if there are devices.
+ */
+static int uwbd(void *unused)
+{
+ unsigned long flags;
+ struct list_head list = LIST_HEAD_INIT(list);
+ struct uwb_event *evt, *nxt;
+ int should_stop = 0;
+ while (1) {
+ wait_event_interruptible_timeout(
+ uwbd_wq,
+ !list_empty(&uwbd_event_list)
+ || (should_stop = kthread_should_stop()),
+ HZ);
+ if (should_stop)
+ break;
+ try_to_freeze();
+
+ mutex_lock(&uwbd_event_mutex);
+ spin_lock_irqsave(&uwbd_event_list_lock, flags);
+ list_splice_init(&uwbd_event_list, &list);
+ spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+ list_for_each_entry_safe(evt, nxt, &list, list_node) {
+ list_del(&evt->list_node);
+ uwbd_event_handle(evt);
+ kfree(evt);
+ }
+ mutex_unlock(&uwbd_event_mutex);
+
+ uwb_beca_purge(); /* Purge devices that left */
+ }
+ return 0;
+}
+
+
+/** Start the UWB daemon */
+void uwbd_start(void)
+{
+ uwbd_task = kthread_run(uwbd, NULL, "uwbd");
+ if (uwbd_task == NULL)
+ printk(KERN_ERR "UWB: Cannot start management daemon; "
+ "UWB won't work\n");
+ else
+ uwbd_pid = uwbd_task->pid;
+}
+
+/* Stop the UWB daemon and free any unprocessed events */
+void uwbd_stop(void)
+{
+ unsigned long flags;
+ struct uwb_event *evt, *nxt;
+ kthread_stop(uwbd_task);
+ spin_lock_irqsave(&uwbd_event_list_lock, flags);
+ uwbd_pid = 0;
+ list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
+ if (evt->type == UWB_EVT_TYPE_NOTIF)
+ kfree(evt->notif.rceb);
+ kfree(evt);
+ }
+ spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+ uwb_beca_release();
+}
+
+/*
+ * Queue an event for the management daemon
+ *
+ * When some lower layer receives an event, it uses this function to
+ * push it forward to the UWB daemon.
+ *
+ * Once you pass the event, you don't own it any more, but the daemon
+ * does. It will uwb_event_free() it when done, so make sure you
+ * uwb_event_alloc()ed it or bad things will happen.
+ *
+ * If the daemon is not running, we just free the event.
+ */
+void uwbd_event_queue(struct uwb_event *evt)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&uwbd_event_list_lock, flags);
+ if (uwbd_pid != 0) {
+ list_add(&evt->list_node, &uwbd_event_list);
+ wake_up_all(&uwbd_wq);
+ } else {
+ __uwb_rc_put(evt->rc);
+ if (evt->type == UWB_EVT_TYPE_NOTIF)
+ kfree(evt->notif.rceb);
+ kfree(evt);
+ }
+ spin_unlock_irqrestore(&uwbd_event_list_lock, flags);
+ return;
+}
+
+void uwbd_flush(struct uwb_rc *rc)
+{
+ struct uwb_event *evt, *nxt;
+
+ mutex_lock(&uwbd_event_mutex);
+
+ spin_lock_irq(&uwbd_event_list_lock);
+ list_for_each_entry_safe(evt, nxt, &uwbd_event_list, list_node) {
+ if (evt->rc == rc) {
+ __uwb_rc_put(rc);
+ list_del(&evt->list_node);
+ if (evt->type == UWB_EVT_TYPE_NOTIF)
+ kfree(evt->notif.rceb);
+ kfree(evt);
+ }
+ }
+ spin_unlock_irq(&uwbd_event_list_lock);
+
+ mutex_unlock(&uwbd_event_mutex);
+}
--- /dev/null
+/*
+ * Wireless Host Controller: Radio Control Interface (WHCI v0.95[2.3])
+ * Radio Control command/event transport to the UWB stack
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Initialize and hook up the Radio Control interface.
+ *
+ * For each device probed, creates an 'struct whcrc' which contains
+ * just the representation of the UWB Radio Controller, and the logic
+ * for reading notifications and passing them to the UWB Core.
+ *
+ * So we initialize all of those, register the UWB Radio Controller
+ * and setup the notification/event handle to pipe the notifications
+ * to the UWB management Daemon.
+ *
+ * Once uwb_rc_add() is called, the UWB stack takes control, resets
+ * the radio and readies the device to take commands the UWB
+ * API/user-space.
+ *
+ * Note this driver is just a transport driver; the commands are
+ * formed at the UWB stack and given to this driver who will deliver
+ * them to the hw and transfer the replies/notifications back to the
+ * UWB stack through the UWB daemon (UWBD).
+ */
+#include <linux/version.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/workqueue.h>
+#include <linux/uwb.h>
+#include <linux/uwb/whci.h>
+#include <linux/uwb/umc.h>
+#include "uwb-internal.h"
+
+#define D_LOCAL 0
+#include <linux/uwb/debug.h>
+
+/**
+ * Descriptor for an instance of the UWB Radio Control Driver that
+ * attaches to the URC interface of the WHCI PCI card.
+ *
+ * Unless there is a lock specific to the 'data members', all access
+ * is protected by uwb_rc->mutex.
+ */
+struct whcrc {
+ struct umc_dev *umc_dev;
+ struct uwb_rc *uwb_rc; /* UWB host controller */
+
+ unsigned long area;
+ void __iomem *rc_base;
+ size_t rc_len;
+ spinlock_t irq_lock;
+
+ void *evt_buf, *cmd_buf;
+ dma_addr_t evt_dma_buf, cmd_dma_buf;
+ wait_queue_head_t cmd_wq;
+ struct work_struct event_work;
+};
+
+/**
+ * Execute an UWB RC command on WHCI/RC
+ *
+ * @rc: Instance of a Radio Controller that is a whcrc
+ * @cmd: Buffer containing the RCCB and payload to execute
+ * @cmd_size: Size of the command buffer.
+ *
+ * We copy the command into whcrc->cmd_buf (as it is pretty and
+ * aligned`and physically contiguous) and then press the right keys in
+ * the controller's URCCMD register to get it to read it. We might
+ * have to wait for the cmd_sem to be open to us.
+ *
+ * NOTE: rc's mutex has to be locked
+ */
+static int whcrc_cmd(struct uwb_rc *uwb_rc,
+ const struct uwb_rccb *cmd, size_t cmd_size)
+{
+ int result = 0;
+ struct whcrc *whcrc = uwb_rc->priv;
+ struct device *dev = &whcrc->umc_dev->dev;
+ u32 urccmd;
+
+ d_fnstart(3, dev, "(%p, %p, %zu)\n", uwb_rc, cmd, cmd_size);
+ might_sleep();
+
+ if (cmd_size >= 4096) {
+ result = -E2BIG;
+ goto error;
+ }
+
+ /*
+ * If the URC is halted, then the hardware has reset itself.
+ * Attempt to recover by restarting the device and then return
+ * an error as it's likely that the current command isn't
+ * valid for a newly started RC.
+ */
+ if (le_readl(whcrc->rc_base + URCSTS) & URCSTS_HALTED) {
+ dev_err(dev, "requesting reset of halted radio controller\n");
+ uwb_rc_reset_all(uwb_rc);
+ result = -EIO;
+ goto error;
+ }
+
+ result = wait_event_timeout(whcrc->cmd_wq,
+ !(le_readl(whcrc->rc_base + URCCMD) & URCCMD_ACTIVE), HZ/2);
+ if (result == 0) {
+ dev_err(dev, "device is not ready to execute commands\n");
+ result = -ETIMEDOUT;
+ goto error;
+ }
+
+ memmove(whcrc->cmd_buf, cmd, cmd_size);
+ le_writeq(whcrc->cmd_dma_buf, whcrc->rc_base + URCCMDADDR);
+
+ spin_lock(&whcrc->irq_lock);
+ urccmd = le_readl(whcrc->rc_base + URCCMD);
+ urccmd &= ~(URCCMD_EARV | URCCMD_SIZE_MASK);
+ le_writel(urccmd | URCCMD_ACTIVE | URCCMD_IWR | cmd_size,
+ whcrc->rc_base + URCCMD);
+ spin_unlock(&whcrc->irq_lock);
+
+error:
+ d_fnend(3, dev, "(%p, %p, %zu) = %d\n",
+ uwb_rc, cmd, cmd_size, result);
+ return result;
+}
+
+static int whcrc_reset(struct uwb_rc *rc)
+{
+ struct whcrc *whcrc = rc->priv;
+
+ return umc_controller_reset(whcrc->umc_dev);
+}
+
+/**
+ * Reset event reception mechanism and tell hw we are ready to get more
+ *
+ * We have read all the events in the event buffer, so we are ready to
+ * reset it to the beginning.
+ *
+ * This is only called during initialization or after an event buffer
+ * has been retired. This means we can be sure that event processing
+ * is disabled and it's safe to update the URCEVTADDR register.
+ *
+ * There's no need to wait for the event processing to start as the
+ * URC will not clear URCCMD_ACTIVE until (internal) event buffer
+ * space is available.
+ */
+static
+void whcrc_enable_events(struct whcrc *whcrc)
+{
+ struct device *dev = &whcrc->umc_dev->dev;
+ u32 urccmd;
+
+ d_fnstart(4, dev, "(whcrc %p)\n", whcrc);
+
+ le_writeq(whcrc->evt_dma_buf, whcrc->rc_base + URCEVTADDR);
+
+ spin_lock(&whcrc->irq_lock);
+ urccmd = le_readl(whcrc->rc_base + URCCMD) & ~URCCMD_ACTIVE;
+ le_writel(urccmd | URCCMD_EARV, whcrc->rc_base + URCCMD);
+ spin_unlock(&whcrc->irq_lock);
+
+ d_fnend(4, dev, "(whcrc %p) = void\n", whcrc);
+}
+
+static void whcrc_event_work(struct work_struct *work)
+{
+ struct whcrc *whcrc = container_of(work, struct whcrc, event_work);
+ struct device *dev = &whcrc->umc_dev->dev;
+ size_t size;
+ u64 urcevtaddr;
+
+ urcevtaddr = le_readq(whcrc->rc_base + URCEVTADDR);
+ size = urcevtaddr & URCEVTADDR_OFFSET_MASK;
+
+ d_printf(3, dev, "received %zu octet event\n", size);
+ d_dump(4, dev, whcrc->evt_buf, size > 32 ? 32 : size);
+
+ uwb_rc_neh_grok(whcrc->uwb_rc, whcrc->evt_buf, size);
+ whcrc_enable_events(whcrc);
+}
+
+/**
+ * Catch interrupts?
+ *
+ * We ack inmediately (and expect the hw to do the right thing and
+ * raise another IRQ if things have changed :)
+ */
+static
+irqreturn_t whcrc_irq_cb(int irq, void *_whcrc)
+{
+ struct whcrc *whcrc = _whcrc;
+ struct device *dev = &whcrc->umc_dev->dev;
+ u32 urcsts;
+
+ urcsts = le_readl(whcrc->rc_base + URCSTS);
+ if (!(urcsts & URCSTS_INT_MASK))
+ return IRQ_NONE;
+ le_writel(urcsts & URCSTS_INT_MASK, whcrc->rc_base + URCSTS);
+
+ d_printf(4, dev, "acked 0x%08x, urcsts 0x%08x\n",
+ le_readl(whcrc->rc_base + URCSTS), urcsts);
+
+ if (urcsts & URCSTS_HSE) {
+ dev_err(dev, "host system error -- hardware halted\n");
+ /* FIXME: do something sensible here */
+ goto out;
+ }
+ if (urcsts & URCSTS_ER) {
+ d_printf(3, dev, "ER: event ready\n");
+ schedule_work(&whcrc->event_work);
+ }
+ if (urcsts & URCSTS_RCI) {
+ d_printf(3, dev, "RCI: ready to execute another command\n");
+ wake_up_all(&whcrc->cmd_wq);
+ }
+out:
+ return IRQ_HANDLED;
+}
+
+
+/**
+ * Initialize a UMC RC interface: map regions, get (shared) IRQ
+ */
+static
+int whcrc_setup_rc_umc(struct whcrc *whcrc)
+{
+ int result = 0;
+ struct device *dev = &whcrc->umc_dev->dev;
+ struct umc_dev *umc_dev = whcrc->umc_dev;
+
+ whcrc->area = umc_dev->resource.start;
+ whcrc->rc_len = umc_dev->resource.end - umc_dev->resource.start + 1;
+ result = -EBUSY;
+ if (request_mem_region(whcrc->area, whcrc->rc_len, KBUILD_MODNAME)
+ == NULL) {
+ dev_err(dev, "can't request URC region (%zu bytes @ 0x%lx): %d\n",
+ whcrc->rc_len, whcrc->area, result);
+ goto error_request_region;
+ }
+
+ whcrc->rc_base = ioremap_nocache(whcrc->area, whcrc->rc_len);
+ if (whcrc->rc_base == NULL) {
+ dev_err(dev, "can't ioremap registers (%zu bytes @ 0x%lx): %d\n",
+ whcrc->rc_len, whcrc->area, result);
+ goto error_ioremap_nocache;
+ }
+
+ result = request_irq(umc_dev->irq, whcrc_irq_cb, IRQF_SHARED,
+ KBUILD_MODNAME, whcrc);
+ if (result < 0) {
+ dev_err(dev, "can't allocate IRQ %d: %d\n",
+ umc_dev->irq, result);
+ goto error_request_irq;
+ }
+
+ result = -ENOMEM;
+ whcrc->cmd_buf = dma_alloc_coherent(&umc_dev->dev, PAGE_SIZE,
+ &whcrc->cmd_dma_buf, GFP_KERNEL);
+ if (whcrc->cmd_buf == NULL) {
+ dev_err(dev, "Can't allocate cmd transfer buffer\n");
+ goto error_cmd_buffer;
+ }
+
+ whcrc->evt_buf = dma_alloc_coherent(&umc_dev->dev, PAGE_SIZE,
+ &whcrc->evt_dma_buf, GFP_KERNEL);
+ if (whcrc->evt_buf == NULL) {
+ dev_err(dev, "Can't allocate evt transfer buffer\n");
+ goto error_evt_buffer;
+ }
+ d_printf(3, dev, "UWB RC Interface: %zu bytes at 0x%p, irq %u\n",
+ whcrc->rc_len, whcrc->rc_base, umc_dev->irq);
+ return 0;
+
+error_evt_buffer:
+ dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->cmd_buf,
+ whcrc->cmd_dma_buf);
+error_cmd_buffer:
+ free_irq(umc_dev->irq, whcrc);
+error_request_irq:
+ iounmap(whcrc->rc_base);
+error_ioremap_nocache:
+ release_mem_region(whcrc->area, whcrc->rc_len);
+error_request_region:
+ return result;
+}
+
+
+/**
+ * Release RC's UMC resources
+ */
+static
+void whcrc_release_rc_umc(struct whcrc *whcrc)
+{
+ struct umc_dev *umc_dev = whcrc->umc_dev;
+
+ dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->evt_buf,
+ whcrc->evt_dma_buf);
+ dma_free_coherent(&umc_dev->dev, PAGE_SIZE, whcrc->cmd_buf,
+ whcrc->cmd_dma_buf);
+ free_irq(umc_dev->irq, whcrc);
+ iounmap(whcrc->rc_base);
+ release_mem_region(whcrc->area, whcrc->rc_len);
+}
+
+
+/**
+ * whcrc_start_rc - start a WHCI radio controller
+ * @whcrc: the radio controller to start
+ *
+ * Reset the UMC device, start the radio controller, enable events and
+ * finally enable interrupts.
+ */
+static int whcrc_start_rc(struct uwb_rc *rc)
+{
+ struct whcrc *whcrc = rc->priv;
+ int result = 0;
+ struct device *dev = &whcrc->umc_dev->dev;
+ unsigned long start, duration;
+
+ /* Reset the thing */
+ le_writel(URCCMD_RESET, whcrc->rc_base + URCCMD);
+ if (d_test(3))
+ start = jiffies;
+ if (whci_wait_for(dev, whcrc->rc_base + URCCMD, URCCMD_RESET, 0,
+ 5000, "device to reset at init") < 0) {
+ result = -EBUSY;
+ goto error;
+ } else if (d_test(3)) {
+ duration = jiffies - start;
+ if (duration > msecs_to_jiffies(40))
+ dev_err(dev, "Device took %ums to "
+ "reset. MAX expected: 40ms\n",
+ jiffies_to_msecs(duration));
+ }
+
+ /* Set the event buffer, start the controller (enable IRQs later) */
+ le_writel(0, whcrc->rc_base + URCINTR);
+ le_writel(URCCMD_RS, whcrc->rc_base + URCCMD);
+ result = -ETIMEDOUT;
+ if (d_test(3))
+ start = jiffies;
+ if (whci_wait_for(dev, whcrc->rc_base + URCSTS, URCSTS_HALTED, 0,
+ 5000, "device to start") < 0)
+ goto error;
+ if (d_test(3)) {
+ duration = jiffies - start;
+ if (duration > msecs_to_jiffies(40))
+ dev_err(dev, "Device took %ums to start. "
+ "MAX expected: 40ms\n",
+ jiffies_to_msecs(duration));
+ }
+ whcrc_enable_events(whcrc);
+ result = 0;
+ le_writel(URCINTR_EN_ALL, whcrc->rc_base + URCINTR);
+error:
+ return result;
+}
+
+
+/**
+ * whcrc_stop_rc - stop a WHCI radio controller
+ * @whcrc: the radio controller to stop
+ *
+ * Disable interrupts and cancel any pending event processing work
+ * before clearing the Run/Stop bit.
+ */
+static
+void whcrc_stop_rc(struct uwb_rc *rc)
+{
+ struct whcrc *whcrc = rc->priv;
+ struct umc_dev *umc_dev = whcrc->umc_dev;
+
+ le_writel(0, whcrc->rc_base + URCINTR);
+ cancel_work_sync(&whcrc->event_work);
+
+ le_writel(0, whcrc->rc_base + URCCMD);
+ whci_wait_for(&umc_dev->dev, whcrc->rc_base + URCSTS,
+ URCSTS_HALTED, 0, 40, "URCSTS.HALTED");
+}
+
+static void whcrc_init(struct whcrc *whcrc)
+{
+ spin_lock_init(&whcrc->irq_lock);
+ init_waitqueue_head(&whcrc->cmd_wq);
+ INIT_WORK(&whcrc->event_work, whcrc_event_work);
+}
+
+/**
+ * Initialize the radio controller.
+ *
+ * NOTE: we setup whcrc->uwb_rc before calling uwb_rc_add(); in the
+ * IRQ handler we use that to determine if the hw is ready to
+ * handle events. Looks like a race condition, but it really is
+ * not.
+ */
+static
+int whcrc_probe(struct umc_dev *umc_dev)
+{
+ int result;
+ struct uwb_rc *uwb_rc;
+ struct whcrc *whcrc;
+ struct device *dev = &umc_dev->dev;
+
+ d_fnstart(3, dev, "(umc_dev %p)\n", umc_dev);
+ result = -ENOMEM;
+ uwb_rc = uwb_rc_alloc();
+ if (uwb_rc == NULL) {
+ dev_err(dev, "unable to allocate RC instance\n");
+ goto error_rc_alloc;
+ }
+ whcrc = kzalloc(sizeof(*whcrc), GFP_KERNEL);
+ if (whcrc == NULL) {
+ dev_err(dev, "unable to allocate WHC-RC instance\n");
+ goto error_alloc;
+ }
+ whcrc_init(whcrc);
+ whcrc->umc_dev = umc_dev;
+
+ result = whcrc_setup_rc_umc(whcrc);
+ if (result < 0) {
+ dev_err(dev, "Can't setup RC UMC interface: %d\n", result);
+ goto error_setup_rc_umc;
+ }
+ whcrc->uwb_rc = uwb_rc;
+
+ uwb_rc->owner = THIS_MODULE;
+ uwb_rc->cmd = whcrc_cmd;
+ uwb_rc->reset = whcrc_reset;
+ uwb_rc->start = whcrc_start_rc;
+ uwb_rc->stop = whcrc_stop_rc;
+
+ result = uwb_rc_add(uwb_rc, dev, whcrc);
+ if (result < 0)
+ goto error_rc_add;
+ umc_set_drvdata(umc_dev, whcrc);
+ d_fnend(3, dev, "(umc_dev %p) = 0\n", umc_dev);
+ return 0;
+
+error_rc_add:
+ whcrc_release_rc_umc(whcrc);
+error_setup_rc_umc:
+ kfree(whcrc);
+error_alloc:
+ uwb_rc_put(uwb_rc);
+error_rc_alloc:
+ d_fnend(3, dev, "(umc_dev %p) = %d\n", umc_dev, result);
+ return result;
+}
+
+/**
+ * Clean up the radio control resources
+ *
+ * When we up the command semaphore, everybody possibly held trying to
+ * execute a command should be granted entry and then they'll see the
+ * host is quiescing and up it (so it will chain to the next waiter).
+ * This should not happen (in any case), as we can only remove when
+ * there are no handles open...
+ */
+static void whcrc_remove(struct umc_dev *umc_dev)
+{
+ struct whcrc *whcrc = umc_get_drvdata(umc_dev);
+ struct uwb_rc *uwb_rc = whcrc->uwb_rc;
+
+ umc_set_drvdata(umc_dev, NULL);
+ uwb_rc_rm(uwb_rc);
+ whcrc_release_rc_umc(whcrc);
+ kfree(whcrc);
+ uwb_rc_put(uwb_rc);
+ d_printf(1, &umc_dev->dev, "freed whcrc %p\n", whcrc);
+}
+
+/* PCI device ID's that we handle [so it gets loaded] */
+static struct pci_device_id whcrc_id_table[] = {
+ { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+ { /* empty last entry */ }
+};
+MODULE_DEVICE_TABLE(pci, whcrc_id_table);
+
+static struct umc_driver whcrc_driver = {
+ .name = "whc-rc",
+ .cap_id = UMC_CAP_ID_WHCI_RC,
+ .probe = whcrc_probe,
+ .remove = whcrc_remove,
+};
+
+static int __init whcrc_driver_init(void)
+{
+ return umc_driver_register(&whcrc_driver);
+}
+module_init(whcrc_driver_init);
+
+static void __exit whcrc_driver_exit(void)
+{
+ umc_driver_unregister(&whcrc_driver);
+}
+module_exit(whcrc_driver_exit);
+
+MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
+MODULE_DESCRIPTION("Wireless Host Controller Radio Control Driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * WHCI UWB Multi-interface Controller enumerator.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GNU GPL v2.
+ */
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/uwb/whci.h>
+#include <linux/uwb/umc.h>
+
+struct whci_card {
+ struct pci_dev *pci;
+ void __iomem *uwbbase;
+ u8 n_caps;
+ struct umc_dev *devs[0];
+};
+
+
+/* Fix faulty HW :( */
+static
+u64 whci_capdata_quirks(struct whci_card *card, u64 capdata)
+{
+ u64 capdata_orig = capdata;
+ struct pci_dev *pci_dev = card->pci;
+ if (pci_dev->vendor == PCI_VENDOR_ID_INTEL
+ && (pci_dev->device == 0x0c3b || pci_dev->device == 0004)
+ && pci_dev->class == 0x0d1010) {
+ switch (UWBCAPDATA_TO_CAP_ID(capdata)) {
+ /* WLP capability has 0x100 bytes of aperture */
+ case 0x80:
+ capdata |= 0x40 << 8; break;
+ /* WUSB capability has 0x80 bytes of aperture
+ * and ID is 1 */
+ case 0x02:
+ capdata &= ~0xffff;
+ capdata |= 0x2001;
+ break;
+ }
+ }
+ if (capdata_orig != capdata)
+ dev_warn(&pci_dev->dev,
+ "PCI v%04x d%04x c%06x#%02x: "
+ "corrected capdata from %016Lx to %016Lx\n",
+ pci_dev->vendor, pci_dev->device, pci_dev->class,
+ (unsigned)UWBCAPDATA_TO_CAP_ID(capdata),
+ (unsigned long long)capdata_orig,
+ (unsigned long long)capdata);
+ return capdata;
+}
+
+
+/**
+ * whci_wait_for - wait for a WHCI register to be set
+ *
+ * Polls (for at most @max_ms ms) until '*@reg & @mask == @result'.
+ */
+int whci_wait_for(struct device *dev, u32 __iomem *reg, u32 mask, u32 result,
+ unsigned long max_ms, const char *tag)
+{
+ unsigned t = 0;
+ u32 val;
+ for (;;) {
+ val = le_readl(reg);
+ if ((val & mask) == result)
+ break;
+ msleep(10);
+ if (t >= max_ms) {
+ dev_err(dev, "timed out waiting for %s ", tag);
+ return -ETIMEDOUT;
+ }
+ t += 10;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(whci_wait_for);
+
+
+/*
+ * NOTE: the capinfo and capdata registers are slightly different
+ * (size and cap-id fields). So for cap #0, we need to fill
+ * in. Size comes from the size of the register block
+ * (statically calculated); cap_id comes from nowhere, we use
+ * zero, that is reserved, for the radio controller, because
+ * none was defined at the spec level.
+ */
+static int whci_add_cap(struct whci_card *card, int n)
+{
+ struct umc_dev *umc;
+ u64 capdata;
+ int bar, err;
+
+ umc = umc_device_create(&card->pci->dev, n);
+ if (umc == NULL)
+ return -ENOMEM;
+
+ capdata = le_readq(card->uwbbase + UWBCAPDATA(n));
+
+ bar = UWBCAPDATA_TO_BAR(capdata) << 1;
+
+ capdata = whci_capdata_quirks(card, capdata);
+ /* Capability 0 is the radio controller. It's size is 32
+ * bytes (WHCI0.95[2.3, T2-9]). */
+ umc->version = UWBCAPDATA_TO_VERSION(capdata);
+ umc->cap_id = n == 0 ? 0 : UWBCAPDATA_TO_CAP_ID(capdata);
+ umc->bar = bar;
+ umc->resource.start = pci_resource_start(card->pci, bar)
+ + UWBCAPDATA_TO_OFFSET(capdata);
+ umc->resource.end = umc->resource.start
+ + (n == 0 ? 0x20 : UWBCAPDATA_TO_SIZE(capdata)) - 1;
+ umc->resource.name = umc->dev.bus_id;
+ umc->resource.flags = card->pci->resource[bar].flags;
+ umc->resource.parent = &card->pci->resource[bar];
+ umc->irq = card->pci->irq;
+
+ err = umc_device_register(umc);
+ if (err < 0)
+ goto error;
+ card->devs[n] = umc;
+ return 0;
+
+error:
+ kfree(umc);
+ return err;
+}
+
+static void whci_del_cap(struct whci_card *card, int n)
+{
+ struct umc_dev *umc = card->devs[n];
+
+ if (umc != NULL)
+ umc_device_unregister(umc);
+}
+
+static int whci_n_caps(struct pci_dev *pci)
+{
+ void __iomem *uwbbase;
+ u64 capinfo;
+
+ uwbbase = pci_iomap(pci, 0, 8);
+ if (!uwbbase)
+ return -ENOMEM;
+ capinfo = le_readq(uwbbase + UWBCAPINFO);
+ pci_iounmap(pci, uwbbase);
+
+ return UWBCAPINFO_TO_N_CAPS(capinfo);
+}
+
+static int whci_probe(struct pci_dev *pci, const struct pci_device_id *id)
+{
+ struct whci_card *card;
+ int err, n_caps, n;
+
+ err = pci_enable_device(pci);
+ if (err < 0)
+ goto error;
+ pci_enable_msi(pci);
+ pci_set_master(pci);
+ err = -ENXIO;
+ if (!pci_set_dma_mask(pci, DMA_64BIT_MASK))
+ pci_set_consistent_dma_mask(pci, DMA_64BIT_MASK);
+ else if (!pci_set_dma_mask(pci, DMA_32BIT_MASK))
+ pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK);
+ else
+ goto error_dma;
+
+ err = n_caps = whci_n_caps(pci);
+ if (n_caps < 0)
+ goto error_ncaps;
+
+ err = -ENOMEM;
+ card = kzalloc(sizeof(struct whci_card)
+ + sizeof(struct whci_dev *) * (n_caps + 1),
+ GFP_KERNEL);
+ if (card == NULL)
+ goto error_kzalloc;
+ card->pci = pci;
+ card->n_caps = n_caps;
+
+ err = -EBUSY;
+ if (!request_mem_region(pci_resource_start(pci, 0),
+ UWBCAPDATA_SIZE(card->n_caps),
+ "whci (capability data)"))
+ goto error_request_memregion;
+ err = -ENOMEM;
+ card->uwbbase = pci_iomap(pci, 0, UWBCAPDATA_SIZE(card->n_caps));
+ if (!card->uwbbase)
+ goto error_iomap;
+
+ /* Add each capability. */
+ for (n = 0; n <= card->n_caps; n++) {
+ err = whci_add_cap(card, n);
+ if (err < 0 && n == 0) {
+ dev_err(&pci->dev, "cannot bind UWB radio controller:"
+ " %d\n", err);
+ goto error_bind;
+ }
+ if (err < 0)
+ dev_warn(&pci->dev, "warning: cannot bind capability "
+ "#%u: %d\n", n, err);
+ }
+ pci_set_drvdata(pci, card);
+ return 0;
+
+error_bind:
+ pci_iounmap(pci, card->uwbbase);
+error_iomap:
+ release_mem_region(pci_resource_start(pci, 0), UWBCAPDATA_SIZE(card->n_caps));
+error_request_memregion:
+ kfree(card);
+error_kzalloc:
+error_ncaps:
+error_dma:
+ pci_disable_msi(pci);
+ pci_disable_device(pci);
+error:
+ return err;
+}
+
+static void whci_remove(struct pci_dev *pci)
+{
+ struct whci_card *card = pci_get_drvdata(pci);
+ int n;
+
+ pci_set_drvdata(pci, NULL);
+ /* Unregister each capability in reverse (so the master device
+ * is unregistered last). */
+ for (n = card->n_caps; n >= 0 ; n--)
+ whci_del_cap(card, n);
+ pci_iounmap(pci, card->uwbbase);
+ release_mem_region(pci_resource_start(pci, 0), UWBCAPDATA_SIZE(card->n_caps));
+ kfree(card);
+ pci_disable_msi(pci);
+ pci_disable_device(pci);
+}
+
+static struct pci_device_id whci_id_table[] = {
+ { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) },
+ { 0 },
+};
+MODULE_DEVICE_TABLE(pci, whci_id_table);
+
+
+static struct pci_driver whci_driver = {
+ .name = "whci",
+ .id_table = whci_id_table,
+ .probe = whci_probe,
+ .remove = whci_remove,
+};
+
+static int __init whci_init(void)
+{
+ return pci_register_driver(&whci_driver);
+}
+
+static void __exit whci_exit(void)
+{
+ pci_unregister_driver(&whci_driver);
+}
+
+module_init(whci_init);
+module_exit(whci_exit);
+
+MODULE_DESCRIPTION("WHCI UWB Multi-interface Controller enumerator");
+MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
+MODULE_LICENSE("GPL");
--- /dev/null
+obj-$(CONFIG_UWB_WLP) := wlp.o
+
+wlp-objs := \
+ driver.o \
+ eda.o \
+ messages.o \
+ sysfs.o \
+ txrx.o \
+ wlp-lc.o \
+ wss-lc.o
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Life cycle of WLP substack
+ *
+ * FIXME: Docs
+ */
+
+#include <linux/module.h>
+
+static int __init wlp_subsys_init(void)
+{
+ return 0;
+}
+module_init(wlp_subsys_init);
+
+static void __exit wlp_subsys_exit(void)
+{
+ return;
+}
+module_exit(wlp_subsys_exit);
+
+MODULE_AUTHOR("Reinette Chatre <reinette.chatre@intel.com>");
+MODULE_DESCRIPTION("WiMedia Logical Link Control Protocol (WLP)");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * WUSB Wire Adapter: WLP interface
+ * Ethernet to device address cache
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * We need to be able to map ethernet addresses to device addresses
+ * and back because there is not explicit relationship between the eth
+ * addresses used in the ETH frames and the device addresses (no, it
+ * would not have been simpler to force as ETH address the MBOA MAC
+ * address...no, not at all :).
+ *
+ * A device has one MBOA MAC address and one device address. It is possible
+ * for a device to have more than one virtual MAC address (although a
+ * virtual address can be the same as the MBOA MAC address). The device
+ * address is guaranteed to be unique among the devices in the extended
+ * beacon group (see ECMA 17.1.1). We thus use the device address as index
+ * to this cache. We do allow searching based on virtual address as this
+ * is how Ethernet frames will be addressed.
+ *
+ * We need to support virtual EUI-48. Although, right now the virtual
+ * EUI-48 will always be the same as the MAC SAP address. The EDA cache
+ * entry thus contains a MAC SAP address as well as the virtual address
+ * (used to map the network stack address to a neighbor). When we move
+ * to support more than one virtual MAC on a host then this organization
+ * will have to change. Perhaps a neighbor has a list of WSSs, each with a
+ * tag and virtual EUI-48.
+ *
+ * On data transmission
+ * it is used to determine if the neighbor is connected and what WSS it
+ * belongs to. With this we know what tag to add to the WLP frame. Storing
+ * the WSS in the EDA cache may be overkill because we only support one
+ * WSS. Hopefully we will support more than one WSS at some point.
+ * On data reception it is used to determine the WSS based on
+ * the tag and address of the transmitting neighbor.
+ */
+
+#define D_LOCAL 5
+#include <linux/netdevice.h>
+#include <linux/uwb/debug.h>
+#include <linux/etherdevice.h>
+#include <linux/wlp.h>
+#include "wlp-internal.h"
+
+
+/* FIXME: cache is not purged, only on device close */
+
+/* FIXME: does not scale, change to dynamic array */
+
+/*
+ * Initialize the EDA cache
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * Call when the interface is being brought up
+ *
+ * NOTE: Keep it as a separate function as the implementation will
+ * change and be more complex.
+ */
+void wlp_eda_init(struct wlp_eda *eda)
+{
+ INIT_LIST_HEAD(&eda->cache);
+ spin_lock_init(&eda->lock);
+}
+
+/*
+ * Release the EDA cache
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * Called when the interface is brought down
+ */
+void wlp_eda_release(struct wlp_eda *eda)
+{
+ unsigned long flags;
+ struct wlp_eda_node *itr, *next;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
+ list_del(&itr->list_node);
+ kfree(itr);
+ }
+ spin_unlock_irqrestore(&eda->lock, flags);
+}
+
+/*
+ * Add an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ *
+ * An address mapping is initially created when the neighbor device is seen
+ * for the first time (it is "onair"). At this time the neighbor is not
+ * connected or associated with a WSS so we only populate the Ethernet and
+ * Device address fields.
+ *
+ */
+int wlp_eda_create_node(struct wlp_eda *eda,
+ const unsigned char eth_addr[ETH_ALEN],
+ const struct uwb_dev_addr *dev_addr)
+{
+ int result = 0;
+ struct wlp_eda_node *itr;
+ unsigned long flags;
+
+ BUG_ON(dev_addr == NULL || eth_addr == NULL);
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(itr, &eda->cache, list_node) {
+ if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+ printk(KERN_ERR "EDA cache already contains entry "
+ "for neighbor %02x:%02x\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ result = -EEXIST;
+ goto out_unlock;
+ }
+ }
+ itr = kzalloc(sizeof(*itr), GFP_ATOMIC);
+ if (itr != NULL) {
+ memcpy(itr->eth_addr, eth_addr, sizeof(itr->eth_addr));
+ itr->dev_addr = *dev_addr;
+ list_add(&itr->list_node, &eda->cache);
+ } else
+ result = -ENOMEM;
+out_unlock:
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+/*
+ * Remove entry from EDA cache
+ *
+ * This is done when the device goes off air.
+ */
+void wlp_eda_rm_node(struct wlp_eda *eda, const struct uwb_dev_addr *dev_addr)
+{
+ struct wlp_eda_node *itr, *next;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
+ if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+ list_del(&itr->list_node);
+ kfree(itr);
+ break;
+ }
+ }
+ spin_unlock_irqrestore(&eda->lock, flags);
+}
+
+/*
+ * Update an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ */
+int wlp_eda_update_node(struct wlp_eda *eda,
+ const struct uwb_dev_addr *dev_addr,
+ struct wlp_wss *wss,
+ const unsigned char virt_addr[ETH_ALEN],
+ const u8 tag, const enum wlp_wss_connect state)
+{
+ int result = -ENOENT;
+ struct wlp_eda_node *itr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(itr, &eda->cache, list_node) {
+ if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+ /* Found it, update it */
+ itr->wss = wss;
+ memcpy(itr->virt_addr, virt_addr,
+ sizeof(itr->virt_addr));
+ itr->tag = tag;
+ itr->state = state;
+ result = 0;
+ goto out_unlock;
+ }
+ }
+ /* Not found */
+out_unlock:
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+/*
+ * Update only state field of an address mapping
+ *
+ * @returns 0 if ok, < 0 errno code on error
+ */
+int wlp_eda_update_node_state(struct wlp_eda *eda,
+ const struct uwb_dev_addr *dev_addr,
+ const enum wlp_wss_connect state)
+{
+ int result = -ENOENT;
+ struct wlp_eda_node *itr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(itr, &eda->cache, list_node) {
+ if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+ /* Found it, update it */
+ itr->state = state;
+ result = 0;
+ goto out_unlock;
+ }
+ }
+ /* Not found */
+out_unlock:
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+/*
+ * Return contents of EDA cache entry
+ *
+ * @dev_addr: index to EDA cache
+ * @eda_entry: pointer to where contents of EDA cache will be copied
+ */
+int wlp_copy_eda_node(struct wlp_eda *eda, struct uwb_dev_addr *dev_addr,
+ struct wlp_eda_node *eda_entry)
+{
+ int result = -ENOENT;
+ struct wlp_eda_node *itr;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(itr, &eda->cache, list_node) {
+ if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
+ *eda_entry = *itr;
+ result = 0;
+ goto out_unlock;
+ }
+ }
+ /* Not found */
+out_unlock:
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+/*
+ * Execute function for every element in the cache
+ *
+ * @function: function to execute on element of cache (must be atomic)
+ * @priv: private data of function
+ * @returns: result of first function that failed, or last function
+ * executed if no function failed.
+ *
+ * Stop executing when function returns error for any element in cache.
+ *
+ * IMPORTANT: We are using a spinlock here: the function executed on each
+ * element has to be atomic.
+ */
+int wlp_eda_for_each(struct wlp_eda *eda, wlp_eda_for_each_f function,
+ void *priv)
+{
+ int result = 0;
+ struct wlp *wlp = container_of(eda, struct wlp, eda);
+ struct wlp_eda_node *entry;
+ unsigned long flags;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(entry, &eda->cache, list_node) {
+ result = (*function)(wlp, entry, priv);
+ if (result < 0)
+ break;
+ }
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+/*
+ * Execute function for single element in the cache (return dev addr)
+ *
+ * @virt_addr: index into EDA cache used to determine which element to
+ * execute the function on
+ * @dev_addr: device address of element in cache will be returned using
+ * @dev_addr
+ * @function: function to execute on element of cache (must be atomic)
+ * @priv: private data of function
+ * @returns: result of function
+ *
+ * IMPORTANT: We are using a spinlock here: the function executed on the
+ * element has to be atomic.
+ */
+int wlp_eda_for_virtual(struct wlp_eda *eda,
+ const unsigned char virt_addr[ETH_ALEN],
+ struct uwb_dev_addr *dev_addr,
+ wlp_eda_for_each_f function,
+ void *priv)
+{
+ int result = 0;
+ struct wlp *wlp = container_of(eda, struct wlp, eda);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_eda_node *itr;
+ unsigned long flags;
+ int found = 0;
+
+ spin_lock_irqsave(&eda->lock, flags);
+ list_for_each_entry(itr, &eda->cache, list_node) {
+ if (!memcmp(itr->virt_addr, virt_addr,
+ sizeof(itr->virt_addr))) {
+ d_printf(6, dev, "EDA: looking for "
+ "%02x:%02x:%02x:%02x:%02x:%02x hit %02x:%02x "
+ "wss %p tag 0x%02x state %u\n",
+ virt_addr[0], virt_addr[1],
+ virt_addr[2], virt_addr[3],
+ virt_addr[4], virt_addr[5],
+ itr->dev_addr.data[1],
+ itr->dev_addr.data[0], itr->wss,
+ itr->tag, itr->state);
+ result = (*function)(wlp, itr, priv);
+ *dev_addr = itr->dev_addr;
+ found = 1;
+ break;
+ } else
+ d_printf(6, dev, "EDA: looking for "
+ "%02x:%02x:%02x:%02x:%02x:%02x "
+ "against "
+ "%02x:%02x:%02x:%02x:%02x:%02x miss\n",
+ virt_addr[0], virt_addr[1],
+ virt_addr[2], virt_addr[3],
+ virt_addr[4], virt_addr[5],
+ itr->virt_addr[0], itr->virt_addr[1],
+ itr->virt_addr[2], itr->virt_addr[3],
+ itr->virt_addr[4], itr->virt_addr[5]);
+ }
+ if (!found) {
+ if (printk_ratelimit())
+ dev_err(dev, "EDA: Eth addr %02x:%02x:%02x"
+ ":%02x:%02x:%02x not found.\n",
+ virt_addr[0], virt_addr[1],
+ virt_addr[2], virt_addr[3],
+ virt_addr[4], virt_addr[5]);
+ result = -ENODEV;
+ }
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+
+static const char *__wlp_wss_connect_state[] = { "WLP_WSS_UNCONNECTED",
+ "WLP_WSS_CONNECTED",
+ "WLP_WSS_CONNECT_FAILED",
+};
+
+static const char *wlp_wss_connect_state_str(unsigned id)
+{
+ if (id >= ARRAY_SIZE(__wlp_wss_connect_state))
+ return "unknown WSS connection state";
+ return __wlp_wss_connect_state[id];
+}
+
+/*
+ * View EDA cache from user space
+ *
+ * A debugging feature to give user visibility into the EDA cache. Also
+ * used to display members of WSS to user (called from wlp_wss_members_show())
+ */
+ssize_t wlp_eda_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+ struct wlp_eda_node *entry;
+ unsigned long flags;
+ struct wlp_eda *eda = &wlp->eda;
+ spin_lock_irqsave(&eda->lock, flags);
+ result = scnprintf(buf, PAGE_SIZE, "#eth_addr dev_addr wss_ptr "
+ "tag state virt_addr\n");
+ list_for_each_entry(entry, &eda->cache, list_node) {
+ result += scnprintf(buf + result, PAGE_SIZE - result,
+ "%02x:%02x:%02x:%02x:%02x:%02x %02x:%02x "
+ "%p 0x%02x %s "
+ "%02x:%02x:%02x:%02x:%02x:%02x\n",
+ entry->eth_addr[0], entry->eth_addr[1],
+ entry->eth_addr[2], entry->eth_addr[3],
+ entry->eth_addr[4], entry->eth_addr[5],
+ entry->dev_addr.data[1],
+ entry->dev_addr.data[0], entry->wss,
+ entry->tag,
+ wlp_wss_connect_state_str(entry->state),
+ entry->virt_addr[0], entry->virt_addr[1],
+ entry->virt_addr[2], entry->virt_addr[3],
+ entry->virt_addr[4], entry->virt_addr[5]);
+ if (result >= PAGE_SIZE)
+ break;
+ }
+ spin_unlock_irqrestore(&eda->lock, flags);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_eda_show);
+
+/*
+ * Add new EDA cache entry based on user input in sysfs
+ *
+ * Should only be used for debugging.
+ *
+ * The WSS is assumed to be the only WSS supported. This needs to be
+ * redesigned when we support more than one WSS.
+ */
+ssize_t wlp_eda_store(struct wlp *wlp, const char *buf, size_t size)
+{
+ ssize_t result;
+ struct wlp_eda *eda = &wlp->eda;
+ u8 eth_addr[6];
+ struct uwb_dev_addr dev_addr;
+ u8 tag;
+ unsigned state;
+
+ result = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx "
+ "%02hhx:%02hhx %02hhx %u\n",
+ ð_addr[0], ð_addr[1],
+ ð_addr[2], ð_addr[3],
+ ð_addr[4], ð_addr[5],
+ &dev_addr.data[1], &dev_addr.data[0], &tag, &state);
+ switch (result) {
+ case 6: /* no dev addr specified -- remove entry NOT IMPLEMENTED */
+ /*result = wlp_eda_rm(eda, eth_addr, &dev_addr);*/
+ result = -ENOSYS;
+ break;
+ case 10:
+ state = state >= 1 ? 1 : 0;
+ result = wlp_eda_create_node(eda, eth_addr, &dev_addr);
+ if (result < 0 && result != -EEXIST)
+ goto error;
+ /* Set virtual addr to be same as MAC */
+ result = wlp_eda_update_node(eda, &dev_addr, &wlp->wss,
+ eth_addr, tag, state);
+ if (result < 0)
+ goto error;
+ break;
+ default: /* bad format */
+ result = -EINVAL;
+ }
+error:
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_eda_store);
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Message construction and parsing
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/wlp.h>
+#define D_LOCAL 6
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+static
+const char *__wlp_assoc_frame[] = {
+ [WLP_ASSOC_D1] = "WLP_ASSOC_D1",
+ [WLP_ASSOC_D2] = "WLP_ASSOC_D2",
+ [WLP_ASSOC_M1] = "WLP_ASSOC_M1",
+ [WLP_ASSOC_M2] = "WLP_ASSOC_M2",
+ [WLP_ASSOC_M3] = "WLP_ASSOC_M3",
+ [WLP_ASSOC_M4] = "WLP_ASSOC_M4",
+ [WLP_ASSOC_M5] = "WLP_ASSOC_M5",
+ [WLP_ASSOC_M6] = "WLP_ASSOC_M6",
+ [WLP_ASSOC_M7] = "WLP_ASSOC_M7",
+ [WLP_ASSOC_M8] = "WLP_ASSOC_M8",
+ [WLP_ASSOC_F0] = "WLP_ASSOC_F0",
+ [WLP_ASSOC_E1] = "WLP_ASSOC_E1",
+ [WLP_ASSOC_E2] = "WLP_ASSOC_E2",
+ [WLP_ASSOC_C1] = "WLP_ASSOC_C1",
+ [WLP_ASSOC_C2] = "WLP_ASSOC_C2",
+ [WLP_ASSOC_C3] = "WLP_ASSOC_C3",
+ [WLP_ASSOC_C4] = "WLP_ASSOC_C4",
+};
+
+static const char *wlp_assoc_frame_str(unsigned id)
+{
+ if (id >= ARRAY_SIZE(__wlp_assoc_frame))
+ return "unknown association frame";
+ return __wlp_assoc_frame[id];
+}
+
+static const char *__wlp_assc_error[] = {
+ "none",
+ "Authenticator Failure",
+ "Rogue activity suspected",
+ "Device busy",
+ "Setup Locked",
+ "Registrar not ready",
+ "Invalid WSS selection",
+ "Message timeout",
+ "Enrollment session timeout",
+ "Device password invalid",
+ "Unsupported version",
+ "Internal error",
+ "Undefined error",
+ "Numeric comparison failure",
+ "Waiting for user input",
+};
+
+static const char *wlp_assc_error_str(unsigned id)
+{
+ if (id >= ARRAY_SIZE(__wlp_assc_error))
+ return "unknown WLP association error";
+ return __wlp_assc_error[id];
+}
+
+static inline void wlp_set_attr_hdr(struct wlp_attr_hdr *hdr, unsigned type,
+ size_t len)
+{
+ hdr->type = cpu_to_le16(type);
+ hdr->length = cpu_to_le16(len);
+}
+
+/*
+ * Populate fields of a constant sized attribute
+ *
+ * @returns: total size of attribute including size of new value
+ *
+ * We have two instances of this function (wlp_pset and wlp_set): one takes
+ * the value as a parameter, the other takes a pointer to the value as
+ * parameter. They thus only differ in how the value is assigned to the
+ * attribute.
+ *
+ * We use sizeof(*attr) - sizeof(struct wlp_attr_hdr) instead of
+ * sizeof(type) to be able to use this same code for the structures that
+ * contain 8bit enum values and be able to deal with pointer types.
+ */
+#define wlp_set(type, type_code, name) \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
+{ \
+ d_fnstart(6, NULL, "(attribute %p)\n", attr); \
+ wlp_set_attr_hdr(&attr->hdr, type_code, \
+ sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
+ attr->name = value; \
+ d_dump(6, NULL, attr, sizeof(*attr)); \
+ d_fnend(6, NULL, "(attribute %p)\n", attr); \
+ return sizeof(*attr); \
+}
+
+#define wlp_pset(type, type_code, name) \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
+{ \
+ d_fnstart(6, NULL, "(attribute %p)\n", attr); \
+ wlp_set_attr_hdr(&attr->hdr, type_code, \
+ sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
+ attr->name = *value; \
+ d_dump(6, NULL, attr, sizeof(*attr)); \
+ d_fnend(6, NULL, "(attribute %p)\n", attr); \
+ return sizeof(*attr); \
+}
+
+/**
+ * Populate fields of a variable attribute
+ *
+ * @returns: total size of attribute including size of new value
+ *
+ * Provided with a pointer to the memory area reserved for the
+ * attribute structure, the field is populated with the value. The
+ * reserved memory has to contain enough space for the value.
+ */
+#define wlp_vset(type, type_code, name) \
+static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value, \
+ size_t len) \
+{ \
+ d_fnstart(6, NULL, "(attribute %p)\n", attr); \
+ wlp_set_attr_hdr(&attr->hdr, type_code, len); \
+ memcpy(attr->name, value, len); \
+ d_dump(6, NULL, attr, sizeof(*attr) + len); \
+ d_fnend(6, NULL, "(attribute %p)\n", attr); \
+ return sizeof(*attr) + len; \
+}
+
+wlp_vset(char *, WLP_ATTR_DEV_NAME, dev_name)
+wlp_vset(char *, WLP_ATTR_MANUF, manufacturer)
+wlp_set(enum wlp_assoc_type, WLP_ATTR_MSG_TYPE, msg_type)
+wlp_vset(char *, WLP_ATTR_MODEL_NAME, model_name)
+wlp_vset(char *, WLP_ATTR_MODEL_NR, model_nr)
+wlp_vset(char *, WLP_ATTR_SERIAL, serial)
+wlp_vset(char *, WLP_ATTR_WSS_NAME, wss_name)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_E, uuid_e)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_R, uuid_r)
+wlp_pset(struct wlp_uuid *, WLP_ATTR_WSSID, wssid)
+wlp_pset(struct wlp_dev_type *, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
+/*wlp_pset(struct wlp_dev_type *, WLP_ATTR_SEC_DEV_TYPE, sec_dev_type)*/
+wlp_set(u8, WLP_ATTR_WLP_VER, version)
+wlp_set(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
+wlp_set(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
+wlp_set(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
+wlp_set(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
+wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_BCAST, wss_bcast)
+wlp_pset(struct wlp_nonce *, WLP_ATTR_ENRL_NONCE, enonce)
+wlp_pset(struct wlp_nonce *, WLP_ATTR_REG_NONCE, rnonce)
+wlp_set(u8, WLP_ATTR_WSS_TAG, wss_tag)
+wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_VIRT, wss_virt)
+
+/**
+ * Fill in the WSS information attributes
+ *
+ * We currently only support one WSS, and this is assumed in this function
+ * that can populate only one WSS information attribute.
+ */
+static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr,
+ struct wlp_wss *wss)
+{
+ size_t datalen;
+ void *ptr = attr->wss_info;
+ size_t used = sizeof(*attr);
+ d_fnstart(6, NULL, "(attribute %p)\n", attr);
+ datalen = sizeof(struct wlp_wss_info) + strlen(wss->name);
+ wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen);
+ used = wlp_set_wssid(ptr, &wss->wssid);
+ used += wlp_set_wss_name(ptr + used, wss->name, strlen(wss->name));
+ used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll);
+ used += wlp_set_wss_sec_status(ptr + used, wss->secure_status);
+ used += wlp_set_wss_bcast(ptr + used, &wss->bcast);
+ d_dump(6, NULL, attr, sizeof(*attr) + datalen);
+ d_fnend(6, NULL, "(attribute %p, used %d)\n",
+ attr, (int)(sizeof(*attr) + used));
+ return sizeof(*attr) + used;
+}
+
+/**
+ * Verify attribute header
+ *
+ * @hdr: Pointer to attribute header that will be verified.
+ * @type: Expected attribute type.
+ * @len: Expected length of attribute value (excluding header).
+ *
+ * Most attribute values have a known length even when they do have a
+ * length field. This knowledge can be used via this function to verify
+ * that the length field matches the expected value.
+ */
+static int wlp_check_attr_hdr(struct wlp *wlp, struct wlp_attr_hdr *hdr,
+ enum wlp_attr_type type, unsigned len)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+
+ if (le16_to_cpu(hdr->type) != type) {
+ dev_err(dev, "WLP: unexpected header type. Expected "
+ "%u, got %u.\n", type, le16_to_cpu(hdr->type));
+ return -EINVAL;
+ }
+ if (le16_to_cpu(hdr->length) != len) {
+ dev_err(dev, "WLP: unexpected length in header. Expected "
+ "%u, got %u.\n", len, le16_to_cpu(hdr->length));
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * Check if header of WSS information attribute valid
+ *
+ * @returns: length of WSS attributes (value of length attribute field) if
+ * valid WSS information attribute found
+ * -ENODATA if no WSS information attribute found
+ * -EIO other error occured
+ *
+ * The WSS information attribute is optional. The function will be provided
+ * with a pointer to data that could _potentially_ be a WSS information
+ * attribute. If a valid WSS information attribute is found it will return
+ * 0, if no WSS information attribute is found it will return -ENODATA, and
+ * another error will be returned if it is a WSS information attribute, but
+ * some parsing failure occured.
+ */
+static int wlp_check_wss_info_attr_hdr(struct wlp *wlp,
+ struct wlp_attr_hdr *hdr, size_t buflen)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ size_t len;
+ int result = 0;
+
+ if (buflen < sizeof(*hdr)) {
+ dev_err(dev, "WLP: Not enough space in buffer to parse"
+ " WSS information attribute header.\n");
+ result = -EIO;
+ goto out;
+ }
+ if (le16_to_cpu(hdr->type) != WLP_ATTR_WSS_INFO) {
+ /* WSS information is optional */
+ result = -ENODATA;
+ goto out;
+ }
+ len = le16_to_cpu(hdr->length);
+ if (buflen < sizeof(*hdr) + len) {
+ dev_err(dev, "WLP: Not enough space in buffer to parse "
+ "variable data. Got %d, expected %d.\n",
+ (int)buflen, (int)(sizeof(*hdr) + len));
+ result = -EIO;
+ goto out;
+ }
+ result = len;
+out:
+ return result;
+}
+
+
+/**
+ * Get value of attribute from fixed size attribute field.
+ *
+ * @attr: Pointer to attribute field.
+ * @value: Pointer to variable in which attribute value will be placed.
+ * @buflen: Size of buffer in which attribute field (including header)
+ * can be found.
+ * @returns: Amount of given buffer consumed by parsing for this attribute.
+ *
+ * The size and type of the value is known by the type of the attribute.
+ */
+#define wlp_get(type, type_code, name) \
+ssize_t wlp_get_##name(struct wlp *wlp, struct wlp_attr_##name *attr, \
+ type *value, ssize_t buflen) \
+{ \
+ struct device *dev = &wlp->rc->uwb_dev.dev; \
+ if (buflen < 0) \
+ return -EINVAL; \
+ if (buflen < sizeof(*attr)) { \
+ dev_err(dev, "WLP: Not enough space in buffer to parse" \
+ " attribute field. Need %d, received %zu\n", \
+ (int)sizeof(*attr), buflen); \
+ return -EIO; \
+ } \
+ if (wlp_check_attr_hdr(wlp, &attr->hdr, type_code, \
+ sizeof(attr->name)) < 0) { \
+ dev_err(dev, "WLP: Header verification failed. \n"); \
+ return -EINVAL; \
+ } \
+ *value = attr->name; \
+ return sizeof(*attr); \
+}
+
+#define wlp_get_sparse(type, type_code, name) \
+ static wlp_get(type, type_code, name)
+
+/**
+ * Get value of attribute from variable sized attribute field.
+ *
+ * @max: The maximum size of this attribute. This value is dictated by
+ * the maximum value from the WLP specification.
+ *
+ * @attr: Pointer to attribute field.
+ * @value: Pointer to variable that will contain the value. The memory
+ * must already have been allocated for this value.
+ * @buflen: Size of buffer in which attribute field (including header)
+ * can be found.
+ * @returns: Amount of given bufferconsumed by parsing for this attribute.
+ */
+#define wlp_vget(type_val, type_code, name, max) \
+static ssize_t wlp_get_##name(struct wlp *wlp, \
+ struct wlp_attr_##name *attr, \
+ type_val *value, ssize_t buflen) \
+{ \
+ struct device *dev = &wlp->rc->uwb_dev.dev; \
+ size_t len; \
+ if (buflen < 0) \
+ return -EINVAL; \
+ if (buflen < sizeof(*attr)) { \
+ dev_err(dev, "WLP: Not enough space in buffer to parse" \
+ " header.\n"); \
+ return -EIO; \
+ } \
+ if (le16_to_cpu(attr->hdr.type) != type_code) { \
+ dev_err(dev, "WLP: Unexpected attribute type. Got %u, " \
+ "expected %u.\n", le16_to_cpu(attr->hdr.type), \
+ type_code); \
+ return -EINVAL; \
+ } \
+ len = le16_to_cpu(attr->hdr.length); \
+ if (len > max) { \
+ dev_err(dev, "WLP: Attribute larger than maximum " \
+ "allowed. Received %zu, max is %d.\n", len, \
+ (int)max); \
+ return -EFBIG; \
+ } \
+ if (buflen < sizeof(*attr) + len) { \
+ dev_err(dev, "WLP: Not enough space in buffer to parse "\
+ "variable data.\n"); \
+ return -EIO; \
+ } \
+ memcpy(value, (void *) attr + sizeof(*attr), len); \
+ return sizeof(*attr) + len; \
+}
+
+wlp_get(u8, WLP_ATTR_WLP_VER, version)
+wlp_get_sparse(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
+wlp_get_sparse(struct wlp_dev_type, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
+wlp_get_sparse(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
+wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_E, uuid_e)
+wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_R, uuid_r)
+wlp_get(struct wlp_uuid, WLP_ATTR_WSSID, wssid)
+wlp_get_sparse(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
+wlp_get_sparse(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
+wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_BCAST, wss_bcast)
+wlp_get_sparse(u8, WLP_ATTR_WSS_TAG, wss_tag)
+wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_VIRT, wss_virt)
+wlp_get_sparse(struct wlp_nonce, WLP_ATTR_ENRL_NONCE, enonce)
+wlp_get_sparse(struct wlp_nonce, WLP_ATTR_REG_NONCE, rnonce)
+
+/* The buffers for the device info attributes can be found in the
+ * wlp_device_info struct. These buffers contain one byte more than the
+ * max allowed by the spec - this is done to be able to add the
+ * terminating \0 for user display. This terminating byte is not required
+ * in the actual attribute field (because it has a length field) so the
+ * maximum allowed for this value is one less than its size in the
+ * structure.
+ */
+wlp_vget(char, WLP_ATTR_WSS_NAME, wss_name,
+ FIELD_SIZEOF(struct wlp_wss, name) - 1)
+wlp_vget(char, WLP_ATTR_DEV_NAME, dev_name,
+ FIELD_SIZEOF(struct wlp_device_info, name) - 1)
+wlp_vget(char, WLP_ATTR_MANUF, manufacturer,
+ FIELD_SIZEOF(struct wlp_device_info, manufacturer) - 1)
+wlp_vget(char, WLP_ATTR_MODEL_NAME, model_name,
+ FIELD_SIZEOF(struct wlp_device_info, model_name) - 1)
+wlp_vget(char, WLP_ATTR_MODEL_NR, model_nr,
+ FIELD_SIZEOF(struct wlp_device_info, model_nr) - 1)
+wlp_vget(char, WLP_ATTR_SERIAL, serial,
+ FIELD_SIZEOF(struct wlp_device_info, serial) - 1)
+
+/**
+ * Retrieve WSS Name, Accept enroll, Secure status, Broadcast from WSS info
+ *
+ * @attr: pointer to WSS name attribute in WSS information attribute field
+ * @info: structure that will be populated with data from WSS information
+ * field (WSS name, Accept enroll, secure status, broadcast address)
+ * @buflen: size of buffer
+ *
+ * Although the WSSID attribute forms part of the WSS info attribute it is
+ * retrieved separately and stored in a different location.
+ */
+static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
+ struct wlp_attr_hdr *attr,
+ struct wlp_wss_tmp_info *info,
+ ssize_t buflen)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ void *ptr = attr;
+ size_t used = 0;
+ ssize_t result = -EINVAL;
+
+ d_printf(6, dev, "WLP: WSS info: Retrieving WSS name\n");
+ result = wlp_get_wss_name(wlp, ptr, info->name, buflen);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS name from "
+ "WSS info in D2 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ d_printf(6, dev, "WLP: WSS info: Retrieving accept enroll\n");
+ result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll,
+ buflen - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain accepting "
+ "enrollment from WSS info in D2 message.\n");
+ goto error_parse;
+ }
+ if (info->accept_enroll != 0 && info->accept_enroll != 1) {
+ dev_err(dev, "WLP: invalid value for accepting "
+ "enrollment in D2 message.\n");
+ result = -EINVAL;
+ goto error_parse;
+ }
+ used += result;
+ d_printf(6, dev, "WLP: WSS info: Retrieving secure status\n");
+ result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status,
+ buflen - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain secure "
+ "status from WSS info in D2 message.\n");
+ goto error_parse;
+ }
+ if (info->sec_status != 0 && info->sec_status != 1) {
+ dev_err(dev, "WLP: invalid value for secure "
+ "status in D2 message.\n");
+ result = -EINVAL;
+ goto error_parse;
+ }
+ used += result;
+ d_printf(6, dev, "WLP: WSS info: Retrieving broadcast\n");
+ result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast,
+ buflen - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain broadcast "
+ "address from WSS info in D2 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = used;
+error_parse:
+ return result;
+}
+
+/**
+ * Create a new WSSID entry for the neighbor, allocate temporary storage
+ *
+ * Each neighbor can have many WSS active. We maintain a list of WSSIDs
+ * advertised by neighbor. During discovery we also cache information about
+ * these WSS in temporary storage.
+ *
+ * The temporary storage will be removed after it has been used (eg.
+ * displayed to user), the wssid element will be removed from the list when
+ * the neighbor is rediscovered or when it disappears.
+ */
+static struct wlp_wssid_e *wlp_create_wssid_e(struct wlp *wlp,
+ struct wlp_neighbor_e *neighbor)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_wssid_e *wssid_e;
+
+ wssid_e = kzalloc(sizeof(*wssid_e), GFP_KERNEL);
+ if (wssid_e == NULL) {
+ dev_err(dev, "WLP: unable to allocate memory "
+ "for WSS information.\n");
+ goto error_alloc;
+ }
+ wssid_e->info = kzalloc(sizeof(struct wlp_wss_tmp_info), GFP_KERNEL);
+ if (wssid_e->info == NULL) {
+ dev_err(dev, "WLP: unable to allocate memory "
+ "for temporary WSS information.\n");
+ kfree(wssid_e);
+ wssid_e = NULL;
+ goto error_alloc;
+ }
+ list_add(&wssid_e->node, &neighbor->wssid);
+error_alloc:
+ return wssid_e;
+}
+
+/**
+ * Parse WSS information attribute
+ *
+ * @attr: pointer to WSS information attribute header
+ * @buflen: size of buffer in which WSS information attribute appears
+ * @wssid: will place wssid from WSS info attribute in this location
+ * @wss_info: will place other information from WSS information attribute
+ * in this location
+ *
+ * memory for @wssid and @wss_info must be allocated when calling this
+ */
+static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr,
+ size_t buflen, struct wlp_uuid *wssid,
+ struct wlp_wss_tmp_info *wss_info)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ ssize_t result;
+ size_t len;
+ size_t used = 0;
+ void *ptr;
+
+ result = wlp_check_wss_info_attr_hdr(wlp, (struct wlp_attr_hdr *)attr,
+ buflen);
+ if (result < 0)
+ goto out;
+ len = result;
+ used = sizeof(*attr);
+ ptr = attr;
+ d_printf(6, dev, "WLP: WSS info: Retrieving WSSID\n");
+ result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n");
+ goto out;
+ }
+ used += result;
+ result = wlp_get_wss_info_attrs(wlp, ptr + used, wss_info,
+ buflen - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS information "
+ "from WSS information attributes. \n");
+ goto out;
+ }
+ used += result;
+ if (len + sizeof(*attr) != used) {
+ dev_err(dev, "WLP: Amount of data parsed does not "
+ "match length field. Parsed %zu, length "
+ "field %zu. \n", used, len);
+ result = -EINVAL;
+ goto out;
+ }
+ result = used;
+ d_printf(6, dev, "WLP: Successfully parsed WLP information "
+ "attribute. used %zu bytes\n", used);
+out:
+ return result;
+}
+
+/**
+ * Retrieve WSS info from association frame
+ *
+ * @attr: pointer to WSS information attribute
+ * @neighbor: ptr to neighbor being discovered, NULL if enrollment in
+ * progress
+ * @wss: ptr to WSS being enrolled in, NULL if discovery in progress
+ * @buflen: size of buffer in which WSS information appears
+ *
+ * The WSS information attribute appears in the D2 association message.
+ * This message is used in two ways: to discover all neighbors or to enroll
+ * into a WSS activated by a neighbor. During discovery we only want to
+ * store the WSS info in a cache, to be deleted right after it has been
+ * used (eg. displayed to the user). During enrollment we store the WSS
+ * information for the lifetime of enrollment.
+ *
+ * During discovery we are interested in all WSS information, during
+ * enrollment we are only interested in the WSS being enrolled in. Even so,
+ * when in enrollment we keep parsing the message after finding the WSS of
+ * interest, this simplifies the calling routine in that it can be sure
+ * that all WSS information attributes have been parsed out of the message.
+ *
+ * Association frame is process with nbmutex held. The list access is safe.
+ */
+static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
+ struct wlp_attr_wss_info *attr,
+ struct wlp_neighbor_e *neighbor,
+ struct wlp_wss *wss, ssize_t buflen)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ size_t used = 0;
+ ssize_t result = -EINVAL;
+ struct wlp_attr_wss_info *cur;
+ struct wlp_uuid wssid;
+ struct wlp_wss_tmp_info wss_info;
+ unsigned enroll; /* 0 - discovery to cache, 1 - enrollment */
+ struct wlp_wssid_e *wssid_e;
+ char buf[WLP_WSS_UUID_STRSIZE];
+
+ d_fnstart(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d \n",
+ wlp, attr, neighbor, wss, (int)buflen);
+ if (buflen < 0)
+ goto out;
+
+ if (neighbor != NULL && wss == NULL)
+ enroll = 0; /* discovery */
+ else if (wss != NULL && neighbor == NULL)
+ enroll = 1; /* enrollment */
+ else
+ goto out;
+
+ cur = attr;
+ while (buflen - used > 0) {
+ memset(&wss_info, 0, sizeof(wss_info));
+ cur = (void *)cur + used;
+ result = wlp_get_wss_info(wlp, cur, buflen - used, &wssid,
+ &wss_info);
+ if (result == -ENODATA) {
+ result = used;
+ goto out;
+ } else if (result < 0) {
+ dev_err(dev, "WLP: Unable to parse WSS information "
+ "from WSS information attribute. \n");
+ result = -EINVAL;
+ goto error_parse;
+ }
+ if (enroll && !memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
+ if (wss_info.accept_enroll != 1) {
+ dev_err(dev, "WLP: Requested WSS does "
+ "not accept enrollment.\n");
+ result = -EINVAL;
+ goto out;
+ }
+ memcpy(wss->name, wss_info.name, sizeof(wss->name));
+ wss->bcast = wss_info.bcast;
+ wss->secure_status = wss_info.sec_status;
+ wss->accept_enroll = wss_info.accept_enroll;
+ wss->state = WLP_WSS_STATE_PART_ENROLLED;
+ wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+ d_printf(2, dev, "WLP: Found WSS %s. Enrolling.\n",
+ buf);
+ } else {
+ wssid_e = wlp_create_wssid_e(wlp, neighbor);
+ if (wssid_e == NULL) {
+ dev_err(dev, "WLP: Cannot create new WSSID "
+ "entry for neighbor %02x:%02x.\n",
+ neighbor->uwb_dev->dev_addr.data[1],
+ neighbor->uwb_dev->dev_addr.data[0]);
+ result = -ENOMEM;
+ goto out;
+ }
+ wssid_e->wssid = wssid;
+ *wssid_e->info = wss_info;
+ }
+ used += result;
+ }
+ result = used;
+error_parse:
+ if (result < 0 && !enroll) /* this was a discovery */
+ wlp_remove_neighbor_tmp_info(neighbor);
+out:
+ d_fnend(6, dev, "wlp %p, attr %p, neighbor %p, wss %p, buflen %d, "
+ "result %d \n", wlp, attr, neighbor, wss, (int)buflen,
+ (int)result);
+ return result;
+
+}
+
+/**
+ * Parse WSS information attributes into cache for discovery
+ *
+ * @attr: the first WSS information attribute in message
+ * @neighbor: the neighbor whose cache will be populated
+ * @buflen: size of the input buffer
+ */
+static ssize_t wlp_get_wss_info_to_cache(struct wlp *wlp,
+ struct wlp_attr_wss_info *attr,
+ struct wlp_neighbor_e *neighbor,
+ ssize_t buflen)
+{
+ return wlp_get_all_wss_info(wlp, attr, neighbor, NULL, buflen);
+}
+
+/**
+ * Parse WSS information attributes into WSS struct for enrollment
+ *
+ * @attr: the first WSS information attribute in message
+ * @wss: the WSS that will be enrolled
+ * @buflen: size of the input buffer
+ */
+static ssize_t wlp_get_wss_info_to_enroll(struct wlp *wlp,
+ struct wlp_attr_wss_info *attr,
+ struct wlp_wss *wss, ssize_t buflen)
+{
+ return wlp_get_all_wss_info(wlp, attr, NULL, wss, buflen);
+}
+
+/**
+ * Construct a D1 association frame
+ *
+ * We use the radio control functions to determine the values of the device
+ * properties. These are of variable length and the total space needed is
+ * tallied first before we start constructing the message. The radio
+ * control functions return strings that are terminated with \0. This
+ * character should not be included in the message (there is a length field
+ * accompanying it in the attribute).
+ */
+static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb)
+{
+
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ struct wlp_device_info *info;
+ size_t used = 0;
+ struct wlp_frame_assoc *_d1;
+ struct sk_buff *_skb;
+ void *d1_itr;
+
+ d_fnstart(6, dev, "wlp %p\n", wlp);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to setup device "
+ "information for D1 message.\n");
+ goto error;
+ }
+ }
+ info = wlp->dev_info;
+ d_printf(6, dev, "Local properties:\n"
+ "Device name (%d bytes): %s\n"
+ "Model name (%d bytes): %s\n"
+ "Manufacturer (%d bytes): %s\n"
+ "Model number (%d bytes): %s\n"
+ "Serial number (%d bytes): %s\n"
+ "Primary device type: \n"
+ " Category: %d \n"
+ " OUI: %02x:%02x:%02x \n"
+ " OUI Subdivision: %u \n",
+ (int)strlen(info->name), info->name,
+ (int)strlen(info->model_name), info->model_name,
+ (int)strlen(info->manufacturer), info->manufacturer,
+ (int)strlen(info->model_nr), info->model_nr,
+ (int)strlen(info->serial), info->serial,
+ info->prim_dev_type.category,
+ info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
+ info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
+ _skb = dev_alloc_skb(sizeof(*_d1)
+ + sizeof(struct wlp_attr_uuid_e)
+ + sizeof(struct wlp_attr_wss_sel_mthd)
+ + sizeof(struct wlp_attr_dev_name)
+ + strlen(info->name)
+ + sizeof(struct wlp_attr_manufacturer)
+ + strlen(info->manufacturer)
+ + sizeof(struct wlp_attr_model_name)
+ + strlen(info->model_name)
+ + sizeof(struct wlp_attr_model_nr)
+ + strlen(info->model_nr)
+ + sizeof(struct wlp_attr_serial)
+ + strlen(info->serial)
+ + sizeof(struct wlp_attr_prim_dev_type)
+ + sizeof(struct wlp_attr_wlp_assc_err));
+ if (_skb == NULL) {
+ dev_err(dev, "WLP: Cannot allocate memory for association "
+ "message.\n");
+ result = -ENOMEM;
+ goto error;
+ }
+ _d1 = (void *) _skb->data;
+ d_printf(6, dev, "D1 starts at %p \n", _d1);
+ _d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ _d1->hdr.type = WLP_FRAME_ASSOCIATION;
+ _d1->type = WLP_ASSOC_D1;
+
+ wlp_set_version(&_d1->version, WLP_VERSION);
+ wlp_set_msg_type(&_d1->msg_type, WLP_ASSOC_D1);
+ d1_itr = _d1->attr;
+ used = wlp_set_uuid_e(d1_itr, &wlp->uuid);
+ used += wlp_set_wss_sel_mthd(d1_itr + used, WLP_WSS_REG_SELECT);
+ used += wlp_set_dev_name(d1_itr + used, info->name,
+ strlen(info->name));
+ used += wlp_set_manufacturer(d1_itr + used, info->manufacturer,
+ strlen(info->manufacturer));
+ used += wlp_set_model_name(d1_itr + used, info->model_name,
+ strlen(info->model_name));
+ used += wlp_set_model_nr(d1_itr + used, info->model_nr,
+ strlen(info->model_nr));
+ used += wlp_set_serial(d1_itr + used, info->serial,
+ strlen(info->serial));
+ used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type);
+ used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE);
+ skb_put(_skb, sizeof(*_d1) + used);
+ d_printf(6, dev, "D1 message:\n");
+ d_dump(6, dev, _d1, sizeof(*_d1)
+ + sizeof(struct wlp_attr_uuid_e)
+ + sizeof(struct wlp_attr_wss_sel_mthd)
+ + sizeof(struct wlp_attr_dev_name)
+ + strlen(info->name)
+ + sizeof(struct wlp_attr_manufacturer)
+ + strlen(info->manufacturer)
+ + sizeof(struct wlp_attr_model_name)
+ + strlen(info->model_name)
+ + sizeof(struct wlp_attr_model_nr)
+ + strlen(info->model_nr)
+ + sizeof(struct wlp_attr_serial)
+ + strlen(info->serial)
+ + sizeof(struct wlp_attr_prim_dev_type)
+ + sizeof(struct wlp_attr_wlp_assc_err));
+ *skb = _skb;
+error:
+ d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+ return result;
+}
+
+/**
+ * Construct a D2 association frame
+ *
+ * We use the radio control functions to determine the values of the device
+ * properties. These are of variable length and the total space needed is
+ * tallied first before we start constructing the message. The radio
+ * control functions return strings that are terminated with \0. This
+ * character should not be included in the message (there is a length field
+ * accompanying it in the attribute).
+ */
+static
+int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb, struct wlp_uuid *uuid_e)
+{
+
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ struct wlp_device_info *info;
+ size_t used = 0;
+ struct wlp_frame_assoc *_d2;
+ struct sk_buff *_skb;
+ void *d2_itr;
+ size_t mem_needed;
+
+ d_fnstart(6, dev, "wlp %p\n", wlp);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to setup device "
+ "information for D2 message.\n");
+ goto error;
+ }
+ }
+ info = wlp->dev_info;
+ d_printf(6, dev, "Local properties:\n"
+ "Device name (%d bytes): %s\n"
+ "Model name (%d bytes): %s\n"
+ "Manufacturer (%d bytes): %s\n"
+ "Model number (%d bytes): %s\n"
+ "Serial number (%d bytes): %s\n"
+ "Primary device type: \n"
+ " Category: %d \n"
+ " OUI: %02x:%02x:%02x \n"
+ " OUI Subdivision: %u \n",
+ (int)strlen(info->name), info->name,
+ (int)strlen(info->model_name), info->model_name,
+ (int)strlen(info->manufacturer), info->manufacturer,
+ (int)strlen(info->model_nr), info->model_nr,
+ (int)strlen(info->serial), info->serial,
+ info->prim_dev_type.category,
+ info->prim_dev_type.OUI[0], info->prim_dev_type.OUI[1],
+ info->prim_dev_type.OUI[2], info->prim_dev_type.OUIsubdiv);
+ mem_needed = sizeof(*_d2)
+ + sizeof(struct wlp_attr_uuid_e)
+ + sizeof(struct wlp_attr_uuid_r)
+ + sizeof(struct wlp_attr_dev_name)
+ + strlen(info->name)
+ + sizeof(struct wlp_attr_manufacturer)
+ + strlen(info->manufacturer)
+ + sizeof(struct wlp_attr_model_name)
+ + strlen(info->model_name)
+ + sizeof(struct wlp_attr_model_nr)
+ + strlen(info->model_nr)
+ + sizeof(struct wlp_attr_serial)
+ + strlen(info->serial)
+ + sizeof(struct wlp_attr_prim_dev_type)
+ + sizeof(struct wlp_attr_wlp_assc_err);
+ if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
+ mem_needed += sizeof(struct wlp_attr_wss_info)
+ + sizeof(struct wlp_wss_info)
+ + strlen(wlp->wss.name);
+ _skb = dev_alloc_skb(mem_needed);
+ if (_skb == NULL) {
+ dev_err(dev, "WLP: Cannot allocate memory for association "
+ "message.\n");
+ result = -ENOMEM;
+ goto error;
+ }
+ _d2 = (void *) _skb->data;
+ d_printf(6, dev, "D2 starts at %p \n", _d2);
+ _d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ _d2->hdr.type = WLP_FRAME_ASSOCIATION;
+ _d2->type = WLP_ASSOC_D2;
+
+ wlp_set_version(&_d2->version, WLP_VERSION);
+ wlp_set_msg_type(&_d2->msg_type, WLP_ASSOC_D2);
+ d2_itr = _d2->attr;
+ used = wlp_set_uuid_e(d2_itr, uuid_e);
+ used += wlp_set_uuid_r(d2_itr + used, &wlp->uuid);
+ if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
+ used += wlp_set_wss_info(d2_itr + used, &wlp->wss);
+ used += wlp_set_dev_name(d2_itr + used, info->name,
+ strlen(info->name));
+ used += wlp_set_manufacturer(d2_itr + used, info->manufacturer,
+ strlen(info->manufacturer));
+ used += wlp_set_model_name(d2_itr + used, info->model_name,
+ strlen(info->model_name));
+ used += wlp_set_model_nr(d2_itr + used, info->model_nr,
+ strlen(info->model_nr));
+ used += wlp_set_serial(d2_itr + used, info->serial,
+ strlen(info->serial));
+ used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type);
+ used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE);
+ skb_put(_skb, sizeof(*_d2) + used);
+ d_printf(6, dev, "D2 message:\n");
+ d_dump(6, dev, _d2, mem_needed);
+ *skb = _skb;
+error:
+ d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+ return result;
+}
+
+/**
+ * Allocate memory for and populate fields of F0 association frame
+ *
+ * Currently (while focusing on unsecure enrollment) we ignore the
+ * nonce's that could be placed in the message. Only the error field is
+ * populated by the value provided by the caller.
+ */
+static
+int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
+ enum wlp_assc_error error)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = -ENOMEM;
+ struct {
+ struct wlp_frame_assoc f0_hdr;
+ struct wlp_attr_enonce enonce;
+ struct wlp_attr_rnonce rnonce;
+ struct wlp_attr_wlp_assc_err assc_err;
+ } *f0;
+ struct sk_buff *_skb;
+ struct wlp_nonce tmp;
+
+ d_fnstart(6, dev, "wlp %p\n", wlp);
+ _skb = dev_alloc_skb(sizeof(*f0));
+ if (_skb == NULL) {
+ dev_err(dev, "WLP: Unable to allocate memory for F0 "
+ "association frame. \n");
+ goto error_alloc;
+ }
+ f0 = (void *) _skb->data;
+ d_printf(6, dev, "F0 starts at %p \n", f0);
+ f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+ f0->f0_hdr.type = WLP_ASSOC_F0;
+ wlp_set_version(&f0->f0_hdr.version, WLP_VERSION);
+ wlp_set_msg_type(&f0->f0_hdr.msg_type, WLP_ASSOC_F0);
+ memset(&tmp, 0, sizeof(tmp));
+ wlp_set_enonce(&f0->enonce, &tmp);
+ wlp_set_rnonce(&f0->rnonce, &tmp);
+ wlp_set_wlp_assc_err(&f0->assc_err, error);
+ skb_put(_skb, sizeof(*f0));
+ *skb = _skb;
+ result = 0;
+error_alloc:
+ d_fnend(6, dev, "wlp %p, result %d \n", wlp, result);
+ return result;
+}
+
+/**
+ * Parse F0 frame
+ *
+ * We just retrieve the values and print it as an error to the user.
+ * Calling function already knows an error occured (F0 indicates error), so
+ * we just parse the content as debug for higher layers.
+ */
+int wlp_parse_f0(struct wlp *wlp, struct sk_buff *skb)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *f0 = (void *) skb->data;
+ void *ptr = skb->data;
+ size_t len = skb->len;
+ size_t used;
+ ssize_t result;
+ struct wlp_nonce enonce, rnonce;
+ enum wlp_assc_error assc_err;
+ char enonce_buf[WLP_WSS_NONCE_STRSIZE];
+ char rnonce_buf[WLP_WSS_NONCE_STRSIZE];
+
+ used = sizeof(*f0);
+ result = wlp_get_enonce(wlp, ptr + used, &enonce, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Enrollee nonce "
+ "attribute from F0 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_rnonce(wlp, ptr + used, &rnonce, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Registrar nonce "
+ "attribute from F0 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WLP Association error "
+ "attribute from F0 message.\n");
+ goto error_parse;
+ }
+ wlp_wss_nonce_print(enonce_buf, sizeof(enonce_buf), &enonce);
+ wlp_wss_nonce_print(rnonce_buf, sizeof(rnonce_buf), &rnonce);
+ dev_err(dev, "WLP: Received F0 error frame from neighbor. Enrollee "
+ "nonce: %s, Registrar nonce: %s, WLP Association error: %s.\n",
+ enonce_buf, rnonce_buf, wlp_assc_error_str(assc_err));
+ result = 0;
+error_parse:
+ return result;
+}
+
+/**
+ * Retrieve variable device information from association message
+ *
+ * The device information parsed is not required in any message. This
+ * routine will thus not fail if an attribute is not present.
+ * The attributes are expected in a certain order, even if all are not
+ * present. The "attribute type" value is used to ensure the attributes
+ * are parsed in the correct order.
+ *
+ * If an error is encountered during parsing the function will return an
+ * error code, when this happens the given device_info structure may be
+ * partially filled.
+ */
+static
+int wlp_get_variable_info(struct wlp *wlp, void *data,
+ struct wlp_device_info *dev_info, ssize_t len)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ size_t used = 0;
+ struct wlp_attr_hdr *hdr;
+ ssize_t result = 0;
+ unsigned last = 0;
+
+ while (len - used > 0) {
+ if (len - used < sizeof(*hdr)) {
+ dev_err(dev, "WLP: Partial data in frame, cannot "
+ "parse. \n");
+ goto error_parse;
+ }
+ hdr = data + used;
+ switch (le16_to_cpu(hdr->type)) {
+ case WLP_ATTR_MANUF:
+ if (last >= WLP_ATTR_MANUF) {
+ dev_err(dev, "WLP: Incorrect order of "
+ "attribute values in D1 msg.\n");
+ goto error_parse;
+ }
+ result = wlp_get_manufacturer(wlp, data + used,
+ dev_info->manufacturer,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to obtain "
+ "Manufacturer attribute from D1 "
+ "message.\n");
+ goto error_parse;
+ }
+ last = WLP_ATTR_MANUF;
+ used += result;
+ break;
+ case WLP_ATTR_MODEL_NAME:
+ if (last >= WLP_ATTR_MODEL_NAME) {
+ dev_err(dev, "WLP: Incorrect order of "
+ "attribute values in D1 msg.\n");
+ goto error_parse;
+ }
+ result = wlp_get_model_name(wlp, data + used,
+ dev_info->model_name,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to obtain Model "
+ "name attribute from D1 message.\n");
+ goto error_parse;
+ }
+ last = WLP_ATTR_MODEL_NAME;
+ used += result;
+ break;
+ case WLP_ATTR_MODEL_NR:
+ if (last >= WLP_ATTR_MODEL_NR) {
+ dev_err(dev, "WLP: Incorrect order of "
+ "attribute values in D1 msg.\n");
+ goto error_parse;
+ }
+ result = wlp_get_model_nr(wlp, data + used,
+ dev_info->model_nr,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to obtain Model "
+ "number attribute from D1 message.\n");
+ goto error_parse;
+ }
+ last = WLP_ATTR_MODEL_NR;
+ used += result;
+ break;
+ case WLP_ATTR_SERIAL:
+ if (last >= WLP_ATTR_SERIAL) {
+ dev_err(dev, "WLP: Incorrect order of "
+ "attribute values in D1 msg.\n");
+ goto error_parse;
+ }
+ result = wlp_get_serial(wlp, data + used,
+ dev_info->serial, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to obtain Serial "
+ "number attribute from D1 message.\n");
+ goto error_parse;
+ }
+ last = WLP_ATTR_SERIAL;
+ used += result;
+ break;
+ case WLP_ATTR_PRI_DEV_TYPE:
+ if (last >= WLP_ATTR_PRI_DEV_TYPE) {
+ dev_err(dev, "WLP: Incorrect order of "
+ "attribute values in D1 msg.\n");
+ goto error_parse;
+ }
+ result = wlp_get_prim_dev_type(wlp, data + used,
+ &dev_info->prim_dev_type,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to obtain Primary "
+ "device type attribute from D1 "
+ "message.\n");
+ goto error_parse;
+ }
+ dev_info->prim_dev_type.category =
+ le16_to_cpu(dev_info->prim_dev_type.category);
+ dev_info->prim_dev_type.subID =
+ le16_to_cpu(dev_info->prim_dev_type.subID);
+ last = WLP_ATTR_PRI_DEV_TYPE;
+ used += result;
+ break;
+ default:
+ /* This is not variable device information. */
+ goto out;
+ break;
+ }
+ }
+out:
+ return used;
+error_parse:
+ return -EINVAL;
+}
+
+/**
+ * Parse incoming D1 frame, populate attribute values
+ *
+ * Caller provides pointers to memory already allocated for attributes
+ * expected in the D1 frame. These variables will be populated.
+ */
+static
+int wlp_parse_d1_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct wlp_uuid *uuid_e,
+ enum wlp_wss_sel_mthd *sel_mthd,
+ struct wlp_device_info *dev_info,
+ enum wlp_assc_error *assc_err)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *d1 = (void *) skb->data;
+ void *ptr = skb->data;
+ size_t len = skb->len;
+ size_t used;
+ ssize_t result;
+
+ used = sizeof(*d1);
+ result = wlp_get_uuid_e(wlp, ptr + used, uuid_e, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain UUID-E attribute from D1 "
+ "message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wss_sel_mthd(wlp, ptr + used, sel_mthd, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS selection method "
+ "from D1 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_dev_name(wlp, ptr + used, dev_info->name,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Name from D1 "
+ "message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_variable_info(wlp, ptr + used, dev_info, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Information from "
+ "D1 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wlp_assc_err(wlp, ptr + used, assc_err, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WLP Association Error "
+ "Information from D1 message.\n");
+ goto error_parse;
+ }
+ result = 0;
+error_parse:
+ return result;
+}
+/**
+ * Handle incoming D1 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a D2 frame in response.
+ *
+ * It is not clear what to do with most fields in the incoming D1 frame. We
+ * retrieve and discard the information here for now.
+ */
+void wlp_handle_d1_frame(struct work_struct *ws)
+{
+ struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+ struct wlp_assoc_frame_ctx,
+ ws);
+ struct wlp *wlp = frame_ctx->wlp;
+ struct wlp_wss *wss = &wlp->wss;
+ struct sk_buff *skb = frame_ctx->skb;
+ struct uwb_dev_addr *src = &frame_ctx->src;
+ int result;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_uuid uuid_e;
+ enum wlp_wss_sel_mthd sel_mthd = 0;
+ struct wlp_device_info dev_info;
+ enum wlp_assc_error assc_err;
+ char uuid[WLP_WSS_UUID_STRSIZE];
+ struct sk_buff *resp = NULL;
+
+ /* Parse D1 frame */
+ d_fnstart(6, dev, "WLP: handle D1 frame. wlp = %p, skb = %p\n",
+ wlp, skb);
+ mutex_lock(&wss->mutex);
+ mutex_lock(&wlp->mutex); /* to access wlp->uuid */
+ memset(&dev_info, 0, sizeof(dev_info));
+ result = wlp_parse_d1_frame(wlp, skb, &uuid_e, &sel_mthd, &dev_info,
+ &assc_err);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to parse incoming D1 frame.\n");
+ kfree_skb(skb);
+ goto out;
+ }
+ wlp_wss_uuid_print(uuid, sizeof(uuid), &uuid_e);
+ d_printf(6, dev, "From D1 frame:\n"
+ "UUID-E: %s\n"
+ "Selection method: %d\n"
+ "Device name (%d bytes): %s\n"
+ "Model name (%d bytes): %s\n"
+ "Manufacturer (%d bytes): %s\n"
+ "Model number (%d bytes): %s\n"
+ "Serial number (%d bytes): %s\n"
+ "Primary device type: \n"
+ " Category: %d \n"
+ " OUI: %02x:%02x:%02x \n"
+ " OUI Subdivision: %u \n",
+ uuid, sel_mthd,
+ (int)strlen(dev_info.name), dev_info.name,
+ (int)strlen(dev_info.model_name), dev_info.model_name,
+ (int)strlen(dev_info.manufacturer), dev_info.manufacturer,
+ (int)strlen(dev_info.model_nr), dev_info.model_nr,
+ (int)strlen(dev_info.serial), dev_info.serial,
+ dev_info.prim_dev_type.category,
+ dev_info.prim_dev_type.OUI[0],
+ dev_info.prim_dev_type.OUI[1],
+ dev_info.prim_dev_type.OUI[2],
+ dev_info.prim_dev_type.OUIsubdiv);
+
+ kfree_skb(skb);
+ if (!wlp_uuid_is_set(&wlp->uuid)) {
+ dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
+ "proceed. Respong to D1 message with error F0.\n");
+ result = wlp_build_assoc_f0(wlp, &resp,
+ WLP_ASSOC_ERROR_NOT_READY);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct F0 message.\n");
+ goto out;
+ }
+ } else {
+ /* Construct D2 frame */
+ result = wlp_build_assoc_d2(wlp, wss, &resp, &uuid_e);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct D2 message.\n");
+ goto out;
+ }
+ }
+ /* Send D2 frame */
+ BUG_ON(wlp->xmit_frame == NULL);
+ result = wlp->xmit_frame(wlp, resp, src);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to transmit D2 association "
+ "message: %d\n", result);
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Is network interface up? \n");
+ /* We could try again ... */
+ dev_kfree_skb_any(resp); /* we need to free if tx fails */
+ }
+out:
+ kfree(frame_ctx);
+ mutex_unlock(&wlp->mutex);
+ mutex_unlock(&wss->mutex);
+ d_fnend(6, dev, "WLP: handle D1 frame. wlp = %p\n", wlp);
+}
+
+/**
+ * Parse incoming D2 frame, create and populate temporary cache
+ *
+ * @skb: socket buffer in which D2 frame can be found
+ * @neighbor: the neighbor that sent the D2 frame
+ *
+ * Will allocate memory for temporary storage of information learned during
+ * discovery.
+ */
+int wlp_parse_d2_frame_to_cache(struct wlp *wlp, struct sk_buff *skb,
+ struct wlp_neighbor_e *neighbor)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *d2 = (void *) skb->data;
+ void *ptr = skb->data;
+ size_t len = skb->len;
+ size_t used;
+ ssize_t result;
+ struct wlp_uuid uuid_e;
+ struct wlp_device_info *nb_info;
+ enum wlp_assc_error assc_err;
+
+ used = sizeof(*d2);
+ result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
+ dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
+ "local UUID sent in D1. \n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_uuid_r(wlp, ptr + used, &neighbor->uuid, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wss_info_to_cache(wlp, ptr + used, neighbor,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS information "
+ "from D2 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ neighbor->info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
+ if (neighbor->info == NULL) {
+ dev_err(dev, "WLP: cannot allocate memory to store device "
+ "info.\n");
+ result = -ENOMEM;
+ goto error_parse;
+ }
+ nb_info = neighbor->info;
+ result = wlp_get_dev_name(wlp, ptr + used, nb_info->name,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Name from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_variable_info(wlp, ptr + used, nb_info, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Information from "
+ "D2 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WLP Association Error "
+ "Information from D2 message.\n");
+ goto error_parse;
+ }
+ if (assc_err != WLP_ASSOC_ERROR_NONE) {
+ dev_err(dev, "WLP: neighbor device returned association "
+ "error %d\n", assc_err);
+ result = -EINVAL;
+ goto error_parse;
+ }
+ result = 0;
+error_parse:
+ if (result < 0)
+ wlp_remove_neighbor_tmp_info(neighbor);
+ return result;
+}
+
+/**
+ * Parse incoming D2 frame, populate attribute values of WSS bein enrolled in
+ *
+ * @wss: our WSS that will be enrolled
+ * @skb: socket buffer in which D2 frame can be found
+ * @neighbor: the neighbor that sent the D2 frame
+ * @wssid: the wssid of the WSS in which we want to enroll
+ *
+ * Forms part of enrollment sequence. We are trying to enroll in WSS with
+ * @wssid by using @neighbor as registrar. A D1 message was sent to
+ * @neighbor and now we need to parse the D2 response. The neighbor's
+ * response is searched for the requested WSS and if found (and it accepts
+ * enrollment), we store the information.
+ */
+int wlp_parse_d2_frame_to_enroll(struct wlp_wss *wss, struct sk_buff *skb,
+ struct wlp_neighbor_e *neighbor,
+ struct wlp_uuid *wssid)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ void *ptr = skb->data;
+ size_t len = skb->len;
+ size_t used;
+ ssize_t result;
+ struct wlp_uuid uuid_e;
+ struct wlp_uuid uuid_r;
+ struct wlp_device_info nb_info;
+ enum wlp_assc_error assc_err;
+ char uuid_bufA[WLP_WSS_UUID_STRSIZE];
+ char uuid_bufB[WLP_WSS_UUID_STRSIZE];
+
+ used = sizeof(struct wlp_frame_assoc);
+ result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
+ dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
+ "local UUID sent in D1. \n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_uuid_r(wlp, ptr + used, &uuid_r, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ if (memcmp(&uuid_r, &neighbor->uuid, sizeof(uuid_r))) {
+ wlp_wss_uuid_print(uuid_bufA, sizeof(uuid_bufA),
+ &neighbor->uuid);
+ wlp_wss_uuid_print(uuid_bufB, sizeof(uuid_bufB), &uuid_r);
+ dev_err(dev, "WLP: UUID of neighbor does not match UUID "
+ "learned during discovery. Originally discovered: %s, "
+ "now from D2 message: %s\n", uuid_bufA, uuid_bufB);
+ result = -EINVAL;
+ goto error_parse;
+ }
+ used += result;
+ wss->wssid = *wssid;
+ result = wlp_get_wss_info_to_enroll(wlp, ptr + used, wss, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS information "
+ "from D2 message.\n");
+ goto error_parse;
+ }
+ if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
+ dev_err(dev, "WLP: D2 message did not contain information "
+ "for successful enrollment. \n");
+ result = -EINVAL;
+ goto error_parse;
+ }
+ used += result;
+ /* Place device information on stack to continue parsing of message */
+ result = wlp_get_dev_name(wlp, ptr + used, nb_info.name,
+ len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Name from D2 "
+ "message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_variable_info(wlp, ptr + used, &nb_info, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain Device Information from "
+ "D2 message.\n");
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WLP Association Error "
+ "Information from D2 message.\n");
+ goto error_parse;
+ }
+ if (assc_err != WLP_ASSOC_ERROR_NONE) {
+ dev_err(dev, "WLP: neighbor device returned association "
+ "error %d\n", assc_err);
+ if (wss->state == WLP_WSS_STATE_PART_ENROLLED) {
+ dev_err(dev, "WLP: Enrolled in WSS (should not "
+ "happen according to spec). Undoing. \n");
+ wlp_wss_reset(wss);
+ }
+ result = -EINVAL;
+ goto error_parse;
+ }
+ result = 0;
+error_parse:
+ return result;
+}
+
+/**
+ * Parse C3/C4 frame into provided variables
+ *
+ * @wssid: will point to copy of wssid retrieved from C3/C4 frame
+ * @tag: will point to copy of tag retrieved from C3/C4 frame
+ * @virt_addr: will point to copy of virtual address retrieved from C3/C4
+ * frame.
+ *
+ * Calling function has to allocate memory for these values.
+ *
+ * skb contains a valid C3/C4 frame, return the individual fields of this
+ * frame in the provided variables.
+ */
+int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct wlp_uuid *wssid, u8 *tag,
+ struct uwb_mac_addr *virt_addr)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result;
+ void *ptr = skb->data;
+ size_t len = skb->len;
+ size_t used;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct wlp_frame_assoc *assoc = ptr;
+
+ d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
+ used = sizeof(*assoc);
+ result = wlp_get_wssid(wlp, ptr + used, wssid, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSSID attribute from "
+ "%s message.\n", wlp_assoc_frame_str(assoc->type));
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wss_tag(wlp, ptr + used, tag, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS tag attribute from "
+ "%s message.\n", wlp_assoc_frame_str(assoc->type));
+ goto error_parse;
+ }
+ used += result;
+ result = wlp_get_wss_virt(wlp, ptr + used, virt_addr, len - used);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSS virtual address "
+ "attribute from %s message.\n",
+ wlp_assoc_frame_str(assoc->type));
+ goto error_parse;
+ }
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_printf(6, dev, "WLP: parsed: WSSID %s, tag 0x%02x, virt "
+ "%02x:%02x:%02x:%02x:%02x:%02x \n", buf, *tag,
+ virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+ virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
+
+error_parse:
+ d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
+ return result;
+}
+
+/**
+ * Allocate memory for and populate fields of C1 or C2 association frame
+ *
+ * The C1 and C2 association frames appear identical - except for the type.
+ */
+static
+int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb, enum wlp_assoc_type type)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = -ENOMEM;
+ struct {
+ struct wlp_frame_assoc c_hdr;
+ struct wlp_attr_wssid wssid;
+ } *c;
+ struct sk_buff *_skb;
+
+ d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
+ _skb = dev_alloc_skb(sizeof(*c));
+ if (_skb == NULL) {
+ dev_err(dev, "WLP: Unable to allocate memory for C1/C2 "
+ "association frame. \n");
+ goto error_alloc;
+ }
+ c = (void *) _skb->data;
+ d_printf(6, dev, "C1/C2 starts at %p \n", c);
+ c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+ c->c_hdr.type = type;
+ wlp_set_version(&c->c_hdr.version, WLP_VERSION);
+ wlp_set_msg_type(&c->c_hdr.msg_type, type);
+ wlp_set_wssid(&c->wssid, &wss->wssid);
+ skb_put(_skb, sizeof(*c));
+ d_printf(6, dev, "C1/C2 message:\n");
+ d_dump(6, dev, c, sizeof(*c));
+ *skb = _skb;
+ result = 0;
+error_alloc:
+ d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
+ return result;
+}
+
+
+static
+int wlp_build_assoc_c1(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb)
+{
+ return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C1);
+}
+
+static
+int wlp_build_assoc_c2(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb)
+{
+ return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C2);
+}
+
+
+/**
+ * Allocate memory for and populate fields of C3 or C4 association frame
+ *
+ * The C3 and C4 association frames appear identical - except for the type.
+ */
+static
+int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb, enum wlp_assoc_type type)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = -ENOMEM;
+ struct {
+ struct wlp_frame_assoc c_hdr;
+ struct wlp_attr_wssid wssid;
+ struct wlp_attr_wss_tag wss_tag;
+ struct wlp_attr_wss_virt wss_virt;
+ } *c;
+ struct sk_buff *_skb;
+
+ d_fnstart(6, dev, "wlp %p, wss %p \n", wlp, wss);
+ _skb = dev_alloc_skb(sizeof(*c));
+ if (_skb == NULL) {
+ dev_err(dev, "WLP: Unable to allocate memory for C3/C4 "
+ "association frame. \n");
+ goto error_alloc;
+ }
+ c = (void *) _skb->data;
+ d_printf(6, dev, "C3/C4 starts at %p \n", c);
+ c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
+ c->c_hdr.type = type;
+ wlp_set_version(&c->c_hdr.version, WLP_VERSION);
+ wlp_set_msg_type(&c->c_hdr.msg_type, type);
+ wlp_set_wssid(&c->wssid, &wss->wssid);
+ wlp_set_wss_tag(&c->wss_tag, wss->tag);
+ wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr);
+ skb_put(_skb, sizeof(*c));
+ d_printf(6, dev, "C3/C4 message:\n");
+ d_dump(6, dev, c, sizeof(*c));
+ *skb = _skb;
+ result = 0;
+error_alloc:
+ d_fnend(6, dev, "wlp %p, wss %p, result %d \n", wlp, wss, result);
+ return result;
+}
+
+static
+int wlp_build_assoc_c3(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb)
+{
+ return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C3);
+}
+
+static
+int wlp_build_assoc_c4(struct wlp *wlp, struct wlp_wss *wss,
+ struct sk_buff **skb)
+{
+ return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C4);
+}
+
+
+#define wlp_send_assoc(type, id) \
+static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \
+ struct uwb_dev_addr *dev_addr) \
+{ \
+ struct device *dev = &wlp->rc->uwb_dev.dev; \
+ int result; \
+ struct sk_buff *skb = NULL; \
+ d_fnstart(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
+ wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
+ d_printf(6, dev, "WLP: Constructing %s frame. \n", \
+ wlp_assoc_frame_str(id)); \
+ /* Build the frame */ \
+ result = wlp_build_assoc_##type(wlp, wss, &skb); \
+ if (result < 0) { \
+ dev_err(dev, "WLP: Unable to construct %s association " \
+ "frame: %d\n", wlp_assoc_frame_str(id), result);\
+ goto error_build_assoc; \
+ } \
+ /* Send the frame */ \
+ d_printf(6, dev, "Transmitting %s frame to %02x:%02x \n", \
+ wlp_assoc_frame_str(id), \
+ dev_addr->data[1], dev_addr->data[0]); \
+ BUG_ON(wlp->xmit_frame == NULL); \
+ result = wlp->xmit_frame(wlp, skb, dev_addr); \
+ if (result < 0) { \
+ dev_err(dev, "WLP: Unable to transmit %s association " \
+ "message: %d\n", wlp_assoc_frame_str(id), \
+ result); \
+ if (result == -ENXIO) \
+ dev_err(dev, "WLP: Is network interface " \
+ "up? \n"); \
+ goto error_xmit; \
+ } \
+ return 0; \
+error_xmit: \
+ /* We could try again ... */ \
+ dev_kfree_skb_any(skb);/*we need to free if tx fails*/ \
+error_build_assoc: \
+ d_fnend(6, dev, "wlp %p, wss %p, neighbor: %02x:%02x\n", \
+ wlp, wss, dev_addr->data[1], dev_addr->data[0]); \
+ return result; \
+}
+
+wlp_send_assoc(d1, WLP_ASSOC_D1)
+wlp_send_assoc(c1, WLP_ASSOC_C1)
+wlp_send_assoc(c3, WLP_ASSOC_C3)
+
+int wlp_send_assoc_frame(struct wlp *wlp, struct wlp_wss *wss,
+ struct uwb_dev_addr *dev_addr,
+ enum wlp_assoc_type type)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ switch (type) {
+ case WLP_ASSOC_D1:
+ result = wlp_send_assoc_d1(wlp, wss, dev_addr);
+ break;
+ case WLP_ASSOC_C1:
+ result = wlp_send_assoc_c1(wlp, wss, dev_addr);
+ break;
+ case WLP_ASSOC_C3:
+ result = wlp_send_assoc_c3(wlp, wss, dev_addr);
+ break;
+ default:
+ dev_err(dev, "WLP: Received request to send unknown "
+ "association message.\n");
+ result = -EINVAL;
+ break;
+ }
+ return result;
+}
+
+/**
+ * Handle incoming C1 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a C2 frame in response.
+ */
+void wlp_handle_c1_frame(struct work_struct *ws)
+{
+ struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+ struct wlp_assoc_frame_ctx,
+ ws);
+ struct wlp *wlp = frame_ctx->wlp;
+ struct wlp_wss *wss = &wlp->wss;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *c1 = (void *) frame_ctx->skb->data;
+ unsigned int len = frame_ctx->skb->len;
+ struct uwb_dev_addr *src = &frame_ctx->src;
+ int result;
+ struct wlp_uuid wssid;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct sk_buff *resp = NULL;
+
+ /* Parse C1 frame */
+ d_fnstart(6, dev, "WLP: handle C1 frame. wlp = %p, c1 = %p\n",
+ wlp, c1);
+ mutex_lock(&wss->mutex);
+ result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid,
+ len - sizeof(*c1));
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n");
+ goto out;
+ }
+ wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+ d_printf(6, dev, "Received C1 frame with WSSID %s \n", buf);
+ if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
+ && wss->state == WLP_WSS_STATE_ACTIVE) {
+ d_printf(6, dev, "WSSID from C1 frame is known locally "
+ "and is active\n");
+ /* Construct C2 frame */
+ result = wlp_build_assoc_c2(wlp, wss, &resp);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct C2 message.\n");
+ goto out;
+ }
+ } else {
+ d_printf(6, dev, "WSSID from C1 frame is not known locally "
+ "or is not active\n");
+ /* Construct F0 frame */
+ result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct F0 message.\n");
+ goto out;
+ }
+ }
+ /* Send C2 frame */
+ d_printf(6, dev, "Transmitting response (C2/F0) frame to %02x:%02x \n",
+ src->data[1], src->data[0]);
+ BUG_ON(wlp->xmit_frame == NULL);
+ result = wlp->xmit_frame(wlp, resp, src);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to transmit response association "
+ "message: %d\n", result);
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Is network interface up? \n");
+ /* We could try again ... */
+ dev_kfree_skb_any(resp); /* we need to free if tx fails */
+ }
+out:
+ kfree_skb(frame_ctx->skb);
+ kfree(frame_ctx);
+ mutex_unlock(&wss->mutex);
+ d_fnend(6, dev, "WLP: handle C1 frame. wlp = %p\n", wlp);
+}
+
+/**
+ * Handle incoming C3 frame
+ *
+ * The frame has already been verified to contain an Association header with
+ * the correct version number. Parse the incoming frame, construct and send
+ * a C4 frame in response. If the C3 frame identifies a WSS that is locally
+ * active then we connect to this neighbor (add it to our EDA cache).
+ */
+void wlp_handle_c3_frame(struct work_struct *ws)
+{
+ struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
+ struct wlp_assoc_frame_ctx,
+ ws);
+ struct wlp *wlp = frame_ctx->wlp;
+ struct wlp_wss *wss = &wlp->wss;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct sk_buff *skb = frame_ctx->skb;
+ struct uwb_dev_addr *src = &frame_ctx->src;
+ int result;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct sk_buff *resp = NULL;
+ struct wlp_uuid wssid;
+ u8 tag;
+ struct uwb_mac_addr virt_addr;
+
+ /* Parse C3 frame */
+ d_fnstart(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
+ wlp, skb);
+ mutex_lock(&wss->mutex);
+ result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain values from C3 frame.\n");
+ goto out;
+ }
+ wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
+ d_printf(6, dev, "Received C3 frame with WSSID %s \n", buf);
+ if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
+ && wss->state >= WLP_WSS_STATE_ACTIVE) {
+ d_printf(6, dev, "WSSID from C3 frame is known locally "
+ "and is active\n");
+ result = wlp_eda_update_node(&wlp->eda, src, wss,
+ (void *) virt_addr.data, tag,
+ WLP_WSS_CONNECTED);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to update EDA cache "
+ "with new connected neighbor information.\n");
+ result = wlp_build_assoc_f0(wlp, &resp,
+ WLP_ASSOC_ERROR_INT);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct F0 "
+ "message.\n");
+ goto out;
+ }
+ } else {
+ wss->state = WLP_WSS_STATE_CONNECTED;
+ /* Construct C4 frame */
+ result = wlp_build_assoc_c4(wlp, wss, &resp);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct C4 "
+ "message.\n");
+ goto out;
+ }
+ }
+ } else {
+ d_printf(6, dev, "WSSID from C3 frame is not known locally "
+ "or is not active\n");
+ /* Construct F0 frame */
+ result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to construct F0 message.\n");
+ goto out;
+ }
+ }
+ /* Send C4 frame */
+ d_printf(6, dev, "Transmitting response (C4/F0) frame to %02x:%02x \n",
+ src->data[1], src->data[0]);
+ BUG_ON(wlp->xmit_frame == NULL);
+ result = wlp->xmit_frame(wlp, resp, src);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to transmit response association "
+ "message: %d\n", result);
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Is network interface up? \n");
+ /* We could try again ... */
+ dev_kfree_skb_any(resp); /* we need to free if tx fails */
+ }
+out:
+ kfree_skb(frame_ctx->skb);
+ kfree(frame_ctx);
+ mutex_unlock(&wss->mutex);
+ d_fnend(6, dev, "WLP: handle C3 frame. wlp = %p, skb = %p\n",
+ wlp, skb);
+}
+
+
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * sysfs functions
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: Docs
+ *
+ */
+
+#include <linux/wlp.h>
+#include "wlp-internal.h"
+
+static
+size_t wlp_wss_wssid_e_print(char *buf, size_t bufsize,
+ struct wlp_wssid_e *wssid_e)
+{
+ size_t used = 0;
+ used += scnprintf(buf, bufsize, " WSS: ");
+ used += wlp_wss_uuid_print(buf + used, bufsize - used,
+ &wssid_e->wssid);
+
+ if (wssid_e->info != NULL) {
+ used += scnprintf(buf + used, bufsize - used, " ");
+ used += uwb_mac_addr_print(buf + used, bufsize - used,
+ &wssid_e->info->bcast);
+ used += scnprintf(buf + used, bufsize - used, " %u %u %s\n",
+ wssid_e->info->accept_enroll,
+ wssid_e->info->sec_status,
+ wssid_e->info->name);
+ }
+ return used;
+}
+
+/**
+ * Print out information learned from neighbor discovery
+ *
+ * Some fields being printed may not be included in the device discovery
+ * information (it is not mandatory). We are thus careful how the
+ * information is printed to ensure it is clear to the user what field is
+ * being referenced.
+ * The information being printed is for one time use - temporary storage is
+ * cleaned after it is printed.
+ *
+ * Ideally sysfs output should be on one line. The information printed here
+ * contain a few strings so it will be hard to parse if they are all
+ * printed on the same line - without agreeing on a standard field
+ * separator.
+ */
+static
+ssize_t wlp_wss_neighborhood_print_remove(struct wlp *wlp, char *buf,
+ size_t bufsize)
+{
+ size_t used = 0;
+ struct wlp_neighbor_e *neighb;
+ struct wlp_wssid_e *wssid_e;
+
+ mutex_lock(&wlp->nbmutex);
+ used = scnprintf(buf, bufsize, "#Neighbor information\n"
+ "#uuid dev_addr\n"
+ "# Device Name:\n# Model Name:\n# Manufacturer:\n"
+ "# Model Nr:\n# Serial:\n"
+ "# Pri Dev type: CategoryID OUI OUISubdiv "
+ "SubcategoryID\n"
+ "# WSS: WSSID WSS_name accept_enroll sec_status "
+ "bcast\n"
+ "# WSS: WSSID WSS_name accept_enroll sec_status "
+ "bcast\n\n");
+ list_for_each_entry(neighb, &wlp->neighbors, node) {
+ if (bufsize - used <= 0)
+ goto out;
+ used += wlp_wss_uuid_print(buf + used, bufsize - used,
+ &neighb->uuid);
+ buf[used++] = ' ';
+ used += uwb_dev_addr_print(buf + used, bufsize - used,
+ &neighb->uwb_dev->dev_addr);
+ if (neighb->info != NULL)
+ used += scnprintf(buf + used, bufsize - used,
+ "\n Device Name: %s\n"
+ " Model Name: %s\n"
+ " Manufacturer:%s \n"
+ " Model Nr: %s\n"
+ " Serial: %s\n"
+ " Pri Dev type: "
+ "%u %02x:%02x:%02x %u %u\n",
+ neighb->info->name,
+ neighb->info->model_name,
+ neighb->info->manufacturer,
+ neighb->info->model_nr,
+ neighb->info->serial,
+ neighb->info->prim_dev_type.category,
+ neighb->info->prim_dev_type.OUI[0],
+ neighb->info->prim_dev_type.OUI[1],
+ neighb->info->prim_dev_type.OUI[2],
+ neighb->info->prim_dev_type.OUIsubdiv,
+ neighb->info->prim_dev_type.subID);
+ list_for_each_entry(wssid_e, &neighb->wssid, node) {
+ used += wlp_wss_wssid_e_print(buf + used,
+ bufsize - used,
+ wssid_e);
+ }
+ buf[used++] = '\n';
+ wlp_remove_neighbor_tmp_info(neighb);
+ }
+
+
+out:
+ mutex_unlock(&wlp->nbmutex);
+ return used;
+}
+
+
+/**
+ * Show properties of all WSS in neighborhood.
+ *
+ * Will trigger a complete discovery of WSS activated by this device and
+ * its neighbors.
+ */
+ssize_t wlp_neighborhood_show(struct wlp *wlp, char *buf)
+{
+ wlp_discover(wlp);
+ return wlp_wss_neighborhood_print_remove(wlp, buf, PAGE_SIZE);
+}
+EXPORT_SYMBOL_GPL(wlp_neighborhood_show);
+
+static
+ssize_t __wlp_wss_properties_show(struct wlp_wss *wss, char *buf,
+ size_t bufsize)
+{
+ ssize_t result;
+
+ result = wlp_wss_uuid_print(buf, bufsize, &wss->wssid);
+ result += scnprintf(buf + result, bufsize - result, " ");
+ result += uwb_mac_addr_print(buf + result, bufsize - result,
+ &wss->bcast);
+ result += scnprintf(buf + result, bufsize - result,
+ " 0x%02x %u ", wss->hash, wss->secure_status);
+ result += wlp_wss_key_print(buf + result, bufsize - result,
+ wss->master_key);
+ result += scnprintf(buf + result, bufsize - result, " 0x%02x ",
+ wss->tag);
+ result += uwb_mac_addr_print(buf + result, bufsize - result,
+ &wss->virtual_addr);
+ result += scnprintf(buf + result, bufsize - result, " %s", wss->name);
+ result += scnprintf(buf + result, bufsize - result,
+ "\n\n#WSSID\n#WSS broadcast address\n"
+ "#WSS hash\n#WSS secure status\n"
+ "#WSS master key\n#WSS local tag\n"
+ "#WSS local virtual EUI-48\n#WSS name\n");
+ return result;
+}
+
+/**
+ * Show which WSS is activated.
+ */
+ssize_t wlp_wss_activate_show(struct wlp_wss *wss, char *buf)
+{
+ int result = 0;
+
+ if (mutex_lock_interruptible(&wss->mutex))
+ goto out;
+ if (wss->state >= WLP_WSS_STATE_ACTIVE)
+ result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
+ else
+ result = scnprintf(buf, PAGE_SIZE, "No local WSS active.\n");
+ result += scnprintf(buf + result, PAGE_SIZE - result,
+ "\n\n"
+ "# echo WSSID SECURE_STATUS ACCEPT_ENROLLMENT "
+ "NAME #create new WSS\n"
+ "# echo WSSID [DEV ADDR] #enroll in and activate "
+ "existing WSS, can request registrar\n"
+ "#\n"
+ "# WSSID is a 16 byte hex array. Eg. 12 A3 3B ... \n"
+ "# SECURE_STATUS 0 - unsecure, 1 - secure (default)\n"
+ "# ACCEPT_ENROLLMENT 0 - no, 1 - yes (default)\n"
+ "# NAME is the text string identifying the WSS\n"
+ "# DEV ADDR is the device address of neighbor "
+ "that should be registrar. Eg. 32:AB\n");
+
+ mutex_unlock(&wss->mutex);
+out:
+ return result;
+
+}
+EXPORT_SYMBOL_GPL(wlp_wss_activate_show);
+
+/**
+ * Create/activate a new WSS or enroll/activate in neighboring WSS
+ *
+ * The user can provide the WSSID of a WSS in which it wants to enroll.
+ * Only the WSSID is necessary if the WSS have been discovered before. If
+ * the WSS has not been discovered before, or the user wants to use a
+ * particular neighbor as its registrar, then the user can also provide a
+ * device address or the neighbor that will be used as registrar.
+ *
+ * A new WSS is created when the user provides a WSSID, secure status, and
+ * WSS name.
+ */
+ssize_t wlp_wss_activate_store(struct wlp_wss *wss,
+ const char *buf, size_t size)
+{
+ ssize_t result = -EINVAL;
+ struct wlp_uuid wssid;
+ struct uwb_dev_addr dev;
+ struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
+ char name[65];
+ unsigned sec_status, accept;
+ memset(name, 0, sizeof(name));
+ result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx:%02hhx",
+ &wssid.data[0] , &wssid.data[1],
+ &wssid.data[2] , &wssid.data[3],
+ &wssid.data[4] , &wssid.data[5],
+ &wssid.data[6] , &wssid.data[7],
+ &wssid.data[8] , &wssid.data[9],
+ &wssid.data[10], &wssid.data[11],
+ &wssid.data[12], &wssid.data[13],
+ &wssid.data[14], &wssid.data[15],
+ &dev.data[1], &dev.data[0]);
+ if (result == 16 || result == 17) {
+ result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%u %u %64c",
+ &wssid.data[0] , &wssid.data[1],
+ &wssid.data[2] , &wssid.data[3],
+ &wssid.data[4] , &wssid.data[5],
+ &wssid.data[6] , &wssid.data[7],
+ &wssid.data[8] , &wssid.data[9],
+ &wssid.data[10], &wssid.data[11],
+ &wssid.data[12], &wssid.data[13],
+ &wssid.data[14], &wssid.data[15],
+ &sec_status, &accept, name);
+ if (result == 16)
+ result = wlp_wss_enroll_activate(wss, &wssid, &bcast);
+ else if (result == 19) {
+ sec_status = sec_status == 0 ? 0 : 1;
+ accept = accept == 0 ? 0 : 1;
+ /* We read name using %c, so the newline needs to be
+ * removed */
+ if (strlen(name) != sizeof(name) - 1)
+ name[strlen(name) - 1] = '\0';
+ result = wlp_wss_create_activate(wss, &wssid, name,
+ sec_status, accept);
+ } else
+ result = -EINVAL;
+ } else if (result == 18)
+ result = wlp_wss_enroll_activate(wss, &wssid, &dev);
+ else
+ result = -EINVAL;
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_wss_activate_store);
+
+/**
+ * Show the UUID of this host
+ */
+ssize_t wlp_uuid_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+
+ mutex_lock(&wlp->mutex);
+ result = wlp_wss_uuid_print(buf, PAGE_SIZE, &wlp->uuid);
+ buf[result++] = '\n';
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_uuid_show);
+
+/**
+ * Store a new UUID for this host
+ *
+ * According to the spec this should be encoded as an octet string in the
+ * order the octets are shown in string representation in RFC 4122 (WLP
+ * 0.99 [Table 6])
+ *
+ * We do not check value provided by user.
+ */
+ssize_t wlp_uuid_store(struct wlp *wlp, const char *buf, size_t size)
+{
+ ssize_t result;
+ struct wlp_uuid uuid;
+
+ mutex_lock(&wlp->mutex);
+ result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx "
+ "%02hhx %02hhx %02hhx %02hhx ",
+ &uuid.data[0] , &uuid.data[1],
+ &uuid.data[2] , &uuid.data[3],
+ &uuid.data[4] , &uuid.data[5],
+ &uuid.data[6] , &uuid.data[7],
+ &uuid.data[8] , &uuid.data[9],
+ &uuid.data[10], &uuid.data[11],
+ &uuid.data[12], &uuid.data[13],
+ &uuid.data[14], &uuid.data[15]);
+ if (result != 16) {
+ result = -EINVAL;
+ goto error;
+ }
+ wlp->uuid = uuid;
+error:
+ mutex_unlock(&wlp->mutex);
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_uuid_store);
+
+/**
+ * Show contents of members of device information structure
+ */
+#define wlp_dev_info_show(type) \
+ssize_t wlp_dev_##type##_show(struct wlp *wlp, char *buf) \
+{ \
+ ssize_t result = 0; \
+ mutex_lock(&wlp->mutex); \
+ if (wlp->dev_info == NULL) { \
+ result = __wlp_setup_device_info(wlp); \
+ if (result < 0) \
+ goto out; \
+ } \
+ result = scnprintf(buf, PAGE_SIZE, "%s\n", wlp->dev_info->type);\
+out: \
+ mutex_unlock(&wlp->mutex); \
+ return result; \
+} \
+EXPORT_SYMBOL_GPL(wlp_dev_##type##_show);
+
+wlp_dev_info_show(name)
+wlp_dev_info_show(model_name)
+wlp_dev_info_show(model_nr)
+wlp_dev_info_show(manufacturer)
+wlp_dev_info_show(serial)
+
+/**
+ * Store contents of members of device information structure
+ */
+#define wlp_dev_info_store(type, len) \
+ssize_t wlp_dev_##type##_store(struct wlp *wlp, const char *buf, size_t size)\
+{ \
+ ssize_t result; \
+ char format[10]; \
+ mutex_lock(&wlp->mutex); \
+ if (wlp->dev_info == NULL) { \
+ result = __wlp_alloc_device_info(wlp); \
+ if (result < 0) \
+ goto out; \
+ } \
+ memset(wlp->dev_info->type, 0, sizeof(wlp->dev_info->type)); \
+ sprintf(format, "%%%uc", len); \
+ result = sscanf(buf, format, wlp->dev_info->type); \
+out: \
+ mutex_unlock(&wlp->mutex); \
+ return result < 0 ? result : size; \
+} \
+EXPORT_SYMBOL_GPL(wlp_dev_##type##_store);
+
+wlp_dev_info_store(name, 32)
+wlp_dev_info_store(manufacturer, 64)
+wlp_dev_info_store(model_name, 32)
+wlp_dev_info_store(model_nr, 32)
+wlp_dev_info_store(serial, 32)
+
+static
+const char *__wlp_dev_category[] = {
+ [WLP_DEV_CAT_COMPUTER] = "Computer",
+ [WLP_DEV_CAT_INPUT] = "Input device",
+ [WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER] = "Printer, scanner, FAX, or "
+ "Copier",
+ [WLP_DEV_CAT_CAMERA] = "Camera",
+ [WLP_DEV_CAT_STORAGE] = "Storage Network",
+ [WLP_DEV_CAT_INFRASTRUCTURE] = "Infrastructure",
+ [WLP_DEV_CAT_DISPLAY] = "Display",
+ [WLP_DEV_CAT_MULTIM] = "Multimedia device",
+ [WLP_DEV_CAT_GAMING] = "Gaming device",
+ [WLP_DEV_CAT_TELEPHONE] = "Telephone",
+ [WLP_DEV_CAT_OTHER] = "Other",
+};
+
+static
+const char *wlp_dev_category_str(unsigned cat)
+{
+ if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
+ || cat == WLP_DEV_CAT_OTHER)
+ return __wlp_dev_category[cat];
+ return "unknown category";
+}
+
+ssize_t wlp_dev_prim_category_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = scnprintf(buf, PAGE_SIZE, "%s\n",
+ wlp_dev_category_str(wlp->dev_info->prim_dev_type.category));
+out:
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_category_show);
+
+ssize_t wlp_dev_prim_category_store(struct wlp *wlp, const char *buf,
+ size_t size)
+{
+ ssize_t result;
+ u16 cat;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_alloc_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = sscanf(buf, "%hu", &cat);
+ if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
+ || cat == WLP_DEV_CAT_OTHER)
+ wlp->dev_info->prim_dev_type.category = cat;
+ else
+ result = -EINVAL;
+out:
+ mutex_unlock(&wlp->mutex);
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_category_store);
+
+ssize_t wlp_dev_prim_OUI_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = scnprintf(buf, PAGE_SIZE, "%02x:%02x:%02x\n",
+ wlp->dev_info->prim_dev_type.OUI[0],
+ wlp->dev_info->prim_dev_type.OUI[1],
+ wlp->dev_info->prim_dev_type.OUI[2]);
+out:
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_show);
+
+ssize_t wlp_dev_prim_OUI_store(struct wlp *wlp, const char *buf, size_t size)
+{
+ ssize_t result;
+ u8 OUI[3];
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_alloc_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = sscanf(buf, "%hhx:%hhx:%hhx",
+ &OUI[0], &OUI[1], &OUI[2]);
+ if (result != 3) {
+ result = -EINVAL;
+ goto out;
+ } else
+ memcpy(wlp->dev_info->prim_dev_type.OUI, OUI, sizeof(OUI));
+out:
+ mutex_unlock(&wlp->mutex);
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_store);
+
+
+ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = scnprintf(buf, PAGE_SIZE, "%u\n",
+ wlp->dev_info->prim_dev_type.OUIsubdiv);
+out:
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_show);
+
+ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *wlp, const char *buf,
+ size_t size)
+{
+ ssize_t result;
+ unsigned sub;
+ u8 max_sub = ~0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_alloc_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = sscanf(buf, "%u", &sub);
+ if (sub <= max_sub)
+ wlp->dev_info->prim_dev_type.OUIsubdiv = sub;
+ else
+ result = -EINVAL;
+out:
+ mutex_unlock(&wlp->mutex);
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_store);
+
+ssize_t wlp_dev_prim_subcat_show(struct wlp *wlp, char *buf)
+{
+ ssize_t result = 0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_setup_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = scnprintf(buf, PAGE_SIZE, "%u\n",
+ wlp->dev_info->prim_dev_type.subID);
+out:
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_show);
+
+ssize_t wlp_dev_prim_subcat_store(struct wlp *wlp, const char *buf,
+ size_t size)
+{
+ ssize_t result;
+ unsigned sub;
+ __le16 max_sub = ~0;
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info == NULL) {
+ result = __wlp_alloc_device_info(wlp);
+ if (result < 0)
+ goto out;
+ }
+ result = sscanf(buf, "%u", &sub);
+ if (sub <= max_sub)
+ wlp->dev_info->prim_dev_type.subID = sub;
+ else
+ result = -EINVAL;
+out:
+ mutex_unlock(&wlp->mutex);
+ return result < 0 ? result : size;
+}
+EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_store);
+
+/**
+ * Subsystem implementation for interaction with individual WSS via sysfs
+ *
+ * Followed instructions for subsystem in Documentation/filesystems/sysfs.txt
+ */
+
+#define kobj_to_wlp_wss(obj) container_of(obj, struct wlp_wss, kobj)
+#define attr_to_wlp_wss_attr(_attr) \
+ container_of(_attr, struct wlp_wss_attribute, attr)
+
+/**
+ * Sysfs subsystem: forward read calls
+ *
+ * Sysfs operation for forwarding read call to the show method of the
+ * attribute owner
+ */
+static
+ssize_t wlp_wss_attr_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
+ struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
+ ssize_t ret = -EIO;
+
+ if (wss_attr->show)
+ ret = wss_attr->show(wss, buf);
+ return ret;
+}
+/**
+ * Sysfs subsystem: forward write calls
+ *
+ * Sysfs operation for forwarding write call to the store method of the
+ * attribute owner
+ */
+static
+ssize_t wlp_wss_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
+ struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
+ ssize_t ret = -EIO;
+
+ if (wss_attr->store)
+ ret = wss_attr->store(wss, buf, count);
+ return ret;
+}
+
+static
+struct sysfs_ops wss_sysfs_ops = {
+ .show = wlp_wss_attr_show,
+ .store = wlp_wss_attr_store,
+};
+
+struct kobj_type wss_ktype = {
+ .release = wlp_wss_release,
+ .sysfs_ops = &wss_sysfs_ops,
+};
+
+
+/**
+ * Sysfs files for individual WSS
+ */
+
+/**
+ * Print static properties of this WSS
+ *
+ * The name of a WSS may not be null teminated. It's max size is 64 bytes
+ * so we copy it to a larger array just to make sure we print sane data.
+ */
+static ssize_t wlp_wss_properties_show(struct wlp_wss *wss, char *buf)
+{
+ int result = 0;
+
+ if (mutex_lock_interruptible(&wss->mutex))
+ goto out;
+ result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
+ mutex_unlock(&wss->mutex);
+out:
+ return result;
+}
+WSS_ATTR(properties, S_IRUGO, wlp_wss_properties_show, NULL);
+
+/**
+ * Print all connected members of this WSS
+ * The EDA cache contains all members of WSS neighborhood.
+ */
+static ssize_t wlp_wss_members_show(struct wlp_wss *wss, char *buf)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ return wlp_eda_show(wlp, buf);
+}
+WSS_ATTR(members, S_IRUGO, wlp_wss_members_show, NULL);
+
+static
+const char *__wlp_strstate[] = {
+ "none",
+ "partially enrolled",
+ "enrolled",
+ "active",
+ "connected",
+};
+
+static const char *wlp_wss_strstate(unsigned state)
+{
+ if (state >= ARRAY_SIZE(__wlp_strstate))
+ return "unknown state";
+ return __wlp_strstate[state];
+}
+
+/*
+ * Print current state of this WSS
+ */
+static ssize_t wlp_wss_state_show(struct wlp_wss *wss, char *buf)
+{
+ int result = 0;
+
+ if (mutex_lock_interruptible(&wss->mutex))
+ goto out;
+ result = scnprintf(buf, PAGE_SIZE, "%s\n",
+ wlp_wss_strstate(wss->state));
+ mutex_unlock(&wss->mutex);
+out:
+ return result;
+}
+WSS_ATTR(state, S_IRUGO, wlp_wss_state_show, NULL);
+
+
+static
+struct attribute *wss_attrs[] = {
+ &wss_attr_properties.attr,
+ &wss_attr_members.attr,
+ &wss_attr_state.attr,
+ NULL,
+};
+
+struct attribute_group wss_attr_group = {
+ .name = NULL, /* we want them in the same directory */
+ .attrs = wss_attrs,
+};
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Message exchange infrastructure
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: Docs
+ *
+ */
+
+#include <linux/etherdevice.h>
+#include <linux/wlp.h>
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+/**
+ * Direct incoming association msg to correct parsing routine
+ *
+ * We only expect D1, E1, C1, C3 messages as new. All other incoming
+ * association messages should form part of an established session that is
+ * handled elsewhere.
+ * The handling of these messages often require calling sleeping functions
+ * - this cannot be done in interrupt context. We use the kernel's
+ * workqueue to handle these messages.
+ */
+static
+void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct uwb_dev_addr *src)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *assoc = (void *) skb->data;
+ struct wlp_assoc_frame_ctx *frame_ctx;
+ d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
+ frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC);
+ if (frame_ctx == NULL) {
+ dev_err(dev, "WLP: Unable to allocate memory for association "
+ "frame handling.\n");
+ kfree_skb(skb);
+ goto out;
+ }
+ frame_ctx->wlp = wlp;
+ frame_ctx->skb = skb;
+ frame_ctx->src = *src;
+ switch (assoc->type) {
+ case WLP_ASSOC_D1:
+ d_printf(5, dev, "Received a D1 frame.\n");
+ INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame);
+ schedule_work(&frame_ctx->ws);
+ break;
+ case WLP_ASSOC_E1:
+ d_printf(5, dev, "Received a E1 frame. FIXME?\n");
+ kfree_skb(skb); /* Temporary until we handle it */
+ kfree(frame_ctx); /* Temporary until we handle it */
+ break;
+ case WLP_ASSOC_C1:
+ d_printf(5, dev, "Received a C1 frame.\n");
+ INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame);
+ schedule_work(&frame_ctx->ws);
+ break;
+ case WLP_ASSOC_C3:
+ d_printf(5, dev, "Received a C3 frame.\n");
+ INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame);
+ schedule_work(&frame_ctx->ws);
+ break;
+ default:
+ dev_err(dev, "Received unexpected association frame. "
+ "Type = %d \n", assoc->type);
+ kfree_skb(skb);
+ kfree(frame_ctx);
+ break;
+ }
+out:
+ d_fnend(5, dev, "wlp %p\n", wlp);
+}
+
+/**
+ * Process incoming association frame
+ *
+ * Although it could be possible to deal with some incoming association
+ * messages without creating a new session we are keeping things simple. We
+ * do not accept new association messages if there is a session in progress
+ * and the messages do not belong to that session.
+ *
+ * If an association message arrives that causes the creation of a session
+ * (WLP_ASSOC_E1) while we are in the process of creating a session then we
+ * rely on the neighbor mutex to protect the data. That is, the new session
+ * will not be started until the previous is completed.
+ */
+static
+void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct uwb_dev_addr *src)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_frame_assoc *assoc = (void *) skb->data;
+ struct wlp_session *session = wlp->session;
+ u8 version;
+ d_fnstart(5, dev, "wlp %p, skb %p\n", wlp, skb);
+
+ if (wlp_get_version(wlp, &assoc->version, &version,
+ sizeof(assoc->version)) < 0)
+ goto error;
+ if (version != WLP_VERSION) {
+ dev_err(dev, "Unsupported WLP version in association "
+ "message.\n");
+ goto error;
+ }
+ if (session != NULL) {
+ /* Function that created this session is still holding the
+ * &wlp->mutex to protect this session. */
+ if (assoc->type == session->exp_message ||
+ assoc->type == WLP_ASSOC_F0) {
+ if (!memcmp(&session->neighbor_addr, src,
+ sizeof(*src))) {
+ session->data = skb;
+ (session->cb)(wlp);
+ } else {
+ dev_err(dev, "Received expected message from "
+ "unexpected source. Expected message "
+ "%d or F0 from %02x:%02x, but received "
+ "it from %02x:%02x. Dropping.\n",
+ session->exp_message,
+ session->neighbor_addr.data[1],
+ session->neighbor_addr.data[0],
+ src->data[1], src->data[0]);
+ goto error;
+ }
+ } else {
+ dev_err(dev, "Association already in progress. "
+ "Dropping.\n");
+ goto error;
+ }
+ } else {
+ wlp_direct_assoc_frame(wlp, skb, src);
+ }
+ d_fnend(5, dev, "wlp %p\n", wlp);
+ return;
+error:
+ kfree_skb(skb);
+ d_fnend(5, dev, "wlp %p\n", wlp);
+}
+
+/**
+ * Verify incoming frame is from connected neighbor, prep to pass to WLP client
+ *
+ * Verification proceeds according to WLP 0.99 [7.3.1]. The source address
+ * is used to determine which neighbor is sending the frame and the WSS tag
+ * is used to know to which WSS the frame belongs (we only support one WSS
+ * so this test is straight forward).
+ * With the WSS found we need to ensure that we are connected before
+ * allowing the exchange of data frames.
+ */
+static
+int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb,
+ struct uwb_dev_addr *src)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = -EINVAL;
+ struct wlp_eda_node eda_entry;
+ struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data;
+
+ d_fnstart(6, dev, "wlp %p, skb %p \n", wlp, skb);
+ /*verify*/
+ result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Incoming frame is from unknown "
+ "neighbor %02x:%02x.\n", src->data[1],
+ src->data[0]);
+ goto out;
+ }
+ if (hdr->tag != eda_entry.tag) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Tag of incoming frame from "
+ "%02x:%02x does not match expected tag. "
+ "Received 0x%02x, expected 0x%02x. \n",
+ src->data[1], src->data[0], hdr->tag,
+ eda_entry.tag);
+ result = -EINVAL;
+ goto out;
+ }
+ if (eda_entry.state != WLP_WSS_CONNECTED) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Incoming frame from "
+ "%02x:%02x does is not from connected WSS.\n",
+ src->data[1], src->data[0]);
+ result = -EINVAL;
+ goto out;
+ }
+ /*prep*/
+ skb_pull(skb, sizeof(*hdr));
+out:
+ d_fnend(6, dev, "wlp %p, skb %p, result = %d \n", wlp, skb, result);
+ return result;
+}
+
+/**
+ * Receive a WLP frame from device
+ *
+ * @returns: 1 if calling function should free the skb
+ * 0 if it successfully handled skb and freed it
+ * 0 if error occured, will free skb in this case
+ */
+int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
+ struct uwb_dev_addr *src)
+{
+ unsigned len = skb->len;
+ void *ptr = skb->data;
+ struct wlp_frame_hdr *hdr;
+ int result = 0;
+
+ d_fnstart(6, dev, "skb (%p), len (%u)\n", skb, len);
+ if (len < sizeof(*hdr)) {
+ dev_err(dev, "Not enough data to parse WLP header.\n");
+ result = -EINVAL;
+ goto out;
+ }
+ hdr = ptr;
+ d_dump(6, dev, hdr, sizeof(*hdr));
+ if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) {
+ dev_err(dev, "Not a WLP frame type.\n");
+ result = -EINVAL;
+ goto out;
+ }
+ switch (hdr->type) {
+ case WLP_FRAME_STANDARD:
+ if (len < sizeof(struct wlp_frame_std_abbrv_hdr)) {
+ dev_err(dev, "Not enough data to parse Standard "
+ "WLP header.\n");
+ goto out;
+ }
+ result = wlp_verify_prep_rx_frame(wlp, skb, src);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Verification of frame "
+ "from neighbor %02x:%02x failed.\n",
+ src->data[1], src->data[0]);
+ goto out;
+ }
+ result = 1;
+ break;
+ case WLP_FRAME_ABBREVIATED:
+ dev_err(dev, "Abbreviated frame received. FIXME?\n");
+ kfree_skb(skb);
+ break;
+ case WLP_FRAME_CONTROL:
+ dev_err(dev, "Control frame received. FIXME?\n");
+ kfree_skb(skb);
+ break;
+ case WLP_FRAME_ASSOCIATION:
+ if (len < sizeof(struct wlp_frame_assoc)) {
+ dev_err(dev, "Not enough data to parse Association "
+ "WLP header.\n");
+ goto out;
+ }
+ d_printf(5, dev, "Association frame received.\n");
+ wlp_receive_assoc_frame(wlp, skb, src);
+ break;
+ default:
+ dev_err(dev, "Invalid frame received.\n");
+ result = -EINVAL;
+ break;
+ }
+out:
+ if (result < 0) {
+ kfree_skb(skb);
+ result = 0;
+ }
+ d_fnend(6, dev, "skb (%p)\n", skb);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_receive_frame);
+
+
+/**
+ * Verify frame from network stack, prepare for further transmission
+ *
+ * @skb: the socket buffer that needs to be prepared for transmission (it
+ * is in need of a WLP header). If this is a broadcast frame we take
+ * over the entire transmission.
+ * If it is a unicast the WSS connection should already be established
+ * and transmission will be done by the calling function.
+ * @dst: On return this will contain the device address to which the
+ * frame is destined.
+ * @returns: 0 on success no tx : WLP header sucessfully applied to skb buffer,
+ * calling function can proceed with tx
+ * 1 on success with tx : WLP will take over transmission of this
+ * frame
+ * <0 on error
+ *
+ * The network stack (WLP client) is attempting to transmit a frame. We can
+ * only transmit data if a local WSS is at least active (connection will be
+ * done here if this is a broadcast frame and neighbor also has the WSS
+ * active).
+ *
+ * The frame can be either broadcast or unicast. Broadcast in a WSS is
+ * supported via multicast, but we don't support multicast yet (until
+ * devices start to support MAB IEs). If a broadcast frame needs to be
+ * transmitted it is treated as a unicast frame to each neighbor. In this
+ * case the WLP takes over transmission of the skb and returns 1
+ * to the caller to indicate so. Also, in this case, if a neighbor has the
+ * same WSS activated but is not connected then the WSS connection will be
+ * done at this time. The neighbor's virtual address will be learned at
+ * this time.
+ *
+ * The destination address in a unicast frame is the virtual address of the
+ * neighbor. This address only becomes known when a WSS connection is
+ * established. We thus rely on a broadcast frame to trigger the setup of
+ * WSS connections to all neighbors before we are able to send unicast
+ * frames to them. This seems reasonable as IP would usually use ARP first
+ * before any unicast frames are sent.
+ *
+ * If we are already connected to the neighbor (neighbor's virtual address
+ * is known) we just prepare the WLP header and the caller will continue to
+ * send the frame.
+ *
+ * A failure in this function usually indicates something that cannot be
+ * fixed automatically. So, if this function fails (@return < 0) the calling
+ * function should not retry to send the frame as it will very likely keep
+ * failing.
+ *
+ */
+int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
+ struct sk_buff *skb, struct uwb_dev_addr *dst)
+{
+ int result = -EINVAL;
+ struct ethhdr *eth_hdr = (void *) skb->data;
+
+ d_fnstart(6, dev, "wlp (%p), skb (%p) \n", wlp, skb);
+ if (is_broadcast_ether_addr(eth_hdr->h_dest)) {
+ d_printf(6, dev, "WLP: handling broadcast frame. \n");
+ result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "Unable to handle broadcast "
+ "frame from WLP client.\n");
+ goto out;
+ }
+ dev_kfree_skb_irq(skb);
+ result = 1;
+ /* Frame will be transmitted by WLP. */
+ } else {
+ d_printf(6, dev, "WLP: handling unicast frame. \n");
+ result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst,
+ wlp_wss_prep_hdr, skb);
+ if (unlikely(result < 0)) {
+ if (printk_ratelimit())
+ dev_err(dev, "Unable to prepare "
+ "skb for transmission. \n");
+ goto out;
+ }
+ }
+out:
+ d_fnend(6, dev, "wlp (%p), skb (%p). result = %d \n", wlp, skb, result);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame);
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ * Internal API
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ */
+
+#ifndef __WLP_INTERNAL_H__
+#define __WLP_INTERNAL_H__
+
+/**
+ * State of WSS connection
+ *
+ * A device needs to connect to a neighbor in an activated WSS before data
+ * can be transmitted. The spec also distinguishes between a new connection
+ * attempt and a connection attempt after previous connection attempts. The
+ * state WLP_WSS_CONNECT_FAILED is used for this scenario. See WLP 0.99
+ * [7.2.6]
+ */
+enum wlp_wss_connect {
+ WLP_WSS_UNCONNECTED = 0,
+ WLP_WSS_CONNECTED,
+ WLP_WSS_CONNECT_FAILED,
+};
+
+extern struct kobj_type wss_ktype;
+extern struct attribute_group wss_attr_group;
+
+extern int uwb_rc_ie_add(struct uwb_rc *, const struct uwb_ie_hdr *, size_t);
+extern int uwb_rc_ie_rm(struct uwb_rc *, enum uwb_ie);
+
+
+/* This should be changed to a dynamic array where entries are sorted
+ * by eth_addr and search is done in a binary form
+ *
+ * Although thinking twice about it: this technologie's maximum reach
+ * is 10 meters...unless you want to pack too much stuff in around
+ * your radio controller/WLP device, the list will probably not be
+ * too big.
+ *
+ * In any case, there is probably some data structure in the kernel
+ * than we could reused for that already.
+ *
+ * The below structure is really just good while we support one WSS per
+ * host.
+ */
+struct wlp_eda_node {
+ struct list_head list_node;
+ unsigned char eth_addr[ETH_ALEN];
+ struct uwb_dev_addr dev_addr;
+ struct wlp_wss *wss;
+ unsigned char virt_addr[ETH_ALEN];
+ u8 tag;
+ enum wlp_wss_connect state;
+};
+
+typedef int (*wlp_eda_for_each_f)(struct wlp *, struct wlp_eda_node *, void *);
+
+extern void wlp_eda_init(struct wlp_eda *);
+extern void wlp_eda_release(struct wlp_eda *);
+extern int wlp_eda_create_node(struct wlp_eda *,
+ const unsigned char eth_addr[ETH_ALEN],
+ const struct uwb_dev_addr *);
+extern void wlp_eda_rm_node(struct wlp_eda *, const struct uwb_dev_addr *);
+extern int wlp_eda_update_node(struct wlp_eda *,
+ const struct uwb_dev_addr *,
+ struct wlp_wss *,
+ const unsigned char virt_addr[ETH_ALEN],
+ const u8, const enum wlp_wss_connect);
+extern int wlp_eda_update_node_state(struct wlp_eda *,
+ const struct uwb_dev_addr *,
+ const enum wlp_wss_connect);
+
+extern int wlp_copy_eda_node(struct wlp_eda *, struct uwb_dev_addr *,
+ struct wlp_eda_node *);
+extern int wlp_eda_for_each(struct wlp_eda *, wlp_eda_for_each_f , void *);
+extern int wlp_eda_for_virtual(struct wlp_eda *,
+ const unsigned char eth_addr[ETH_ALEN],
+ struct uwb_dev_addr *,
+ wlp_eda_for_each_f , void *);
+
+
+extern void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *);
+
+extern size_t wlp_wss_key_print(char *, size_t, u8 *);
+
+/* Function called when no more references to WSS exists */
+extern void wlp_wss_release(struct kobject *);
+
+extern void wlp_wss_reset(struct wlp_wss *);
+extern int wlp_wss_create_activate(struct wlp_wss *, struct wlp_uuid *,
+ char *, unsigned, unsigned);
+extern int wlp_wss_enroll_activate(struct wlp_wss *, struct wlp_uuid *,
+ struct uwb_dev_addr *);
+extern ssize_t wlp_discover(struct wlp *);
+
+extern int wlp_enroll_neighbor(struct wlp *, struct wlp_neighbor_e *,
+ struct wlp_wss *, struct wlp_uuid *);
+extern int wlp_wss_is_active(struct wlp *, struct wlp_wss *,
+ struct uwb_dev_addr *);
+
+struct wlp_assoc_conn_ctx {
+ struct work_struct ws;
+ struct wlp *wlp;
+ struct sk_buff *skb;
+ struct wlp_eda_node eda_entry;
+};
+
+
+extern int wlp_wss_connect_prep(struct wlp *, struct wlp_eda_node *, void *);
+extern int wlp_wss_send_copy(struct wlp *, struct wlp_eda_node *, void *);
+
+
+/* Message handling */
+struct wlp_assoc_frame_ctx {
+ struct work_struct ws;
+ struct wlp *wlp;
+ struct sk_buff *skb;
+ struct uwb_dev_addr src;
+};
+
+extern int wlp_wss_prep_hdr(struct wlp *, struct wlp_eda_node *, void *);
+extern void wlp_handle_d1_frame(struct work_struct *);
+extern int wlp_parse_d2_frame_to_cache(struct wlp *, struct sk_buff *,
+ struct wlp_neighbor_e *);
+extern int wlp_parse_d2_frame_to_enroll(struct wlp_wss *, struct sk_buff *,
+ struct wlp_neighbor_e *,
+ struct wlp_uuid *);
+extern void wlp_handle_c1_frame(struct work_struct *);
+extern void wlp_handle_c3_frame(struct work_struct *);
+extern int wlp_parse_c3c4_frame(struct wlp *, struct sk_buff *,
+ struct wlp_uuid *, u8 *,
+ struct uwb_mac_addr *);
+extern int wlp_parse_f0(struct wlp *, struct sk_buff *);
+extern int wlp_send_assoc_frame(struct wlp *, struct wlp_wss *,
+ struct uwb_dev_addr *, enum wlp_assoc_type);
+extern ssize_t wlp_get_version(struct wlp *, struct wlp_attr_version *,
+ u8 *, ssize_t);
+extern ssize_t wlp_get_wssid(struct wlp *, struct wlp_attr_wssid *,
+ struct wlp_uuid *, ssize_t);
+extern int __wlp_alloc_device_info(struct wlp *);
+extern int __wlp_setup_device_info(struct wlp *);
+
+extern struct wlp_wss_attribute wss_attribute_properties;
+extern struct wlp_wss_attribute wss_attribute_members;
+extern struct wlp_wss_attribute wss_attribute_state;
+
+static inline
+size_t wlp_wss_uuid_print(char *buf, size_t bufsize, struct wlp_uuid *uuid)
+{
+ size_t result;
+
+ result = scnprintf(buf, bufsize,
+ "%02x:%02x:%02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x",
+ uuid->data[0], uuid->data[1],
+ uuid->data[2], uuid->data[3],
+ uuid->data[4], uuid->data[5],
+ uuid->data[6], uuid->data[7],
+ uuid->data[8], uuid->data[9],
+ uuid->data[10], uuid->data[11],
+ uuid->data[12], uuid->data[13],
+ uuid->data[14], uuid->data[15]);
+ return result;
+}
+
+/**
+ * FIXME: How should a nonce be displayed?
+ */
+static inline
+size_t wlp_wss_nonce_print(char *buf, size_t bufsize, struct wlp_nonce *nonce)
+{
+ size_t result;
+
+ result = scnprintf(buf, bufsize,
+ "%02x %02x %02x %02x %02x %02x "
+ "%02x %02x %02x %02x %02x %02x "
+ "%02x %02x %02x %02x",
+ nonce->data[0], nonce->data[1],
+ nonce->data[2], nonce->data[3],
+ nonce->data[4], nonce->data[5],
+ nonce->data[6], nonce->data[7],
+ nonce->data[8], nonce->data[9],
+ nonce->data[10], nonce->data[11],
+ nonce->data[12], nonce->data[13],
+ nonce->data[14], nonce->data[15]);
+ return result;
+}
+
+
+static inline
+void wlp_session_cb(struct wlp *wlp)
+{
+ struct completion *completion = wlp->session->cb_priv;
+ complete(completion);
+}
+
+static inline
+int wlp_uuid_is_set(struct wlp_uuid *uuid)
+{
+ struct wlp_uuid zero_uuid = { .data = { 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00} };
+
+ if (!memcmp(uuid, &zero_uuid, sizeof(*uuid)))
+ return 0;
+ return 1;
+}
+
+#endif /* __WLP_INTERNAL_H__ */
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ */
+
+#include <linux/wlp.h>
+#define D_LOCAL 6
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+static
+void wlp_neighbor_init(struct wlp_neighbor_e *neighbor)
+{
+ INIT_LIST_HEAD(&neighbor->wssid);
+}
+
+/**
+ * Create area for device information storage
+ *
+ * wlp->mutex must be held
+ */
+int __wlp_alloc_device_info(struct wlp *wlp)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ BUG_ON(wlp->dev_info != NULL);
+ wlp->dev_info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
+ if (wlp->dev_info == NULL) {
+ dev_err(dev, "WLP: Unable to allocate memory for "
+ "device information.\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+
+/**
+ * Fill in device information using function provided by driver
+ *
+ * wlp->mutex must be held
+ */
+static
+void __wlp_fill_device_info(struct wlp *wlp)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+
+ BUG_ON(wlp->fill_device_info == NULL);
+ d_printf(6, dev, "Retrieving device information "
+ "from device driver.\n");
+ wlp->fill_device_info(wlp, wlp->dev_info);
+}
+
+/**
+ * Setup device information
+ *
+ * Allocate area for device information and populate it.
+ *
+ * wlp->mutex must be held
+ */
+int __wlp_setup_device_info(struct wlp *wlp)
+{
+ int result;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+
+ result = __wlp_alloc_device_info(wlp);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to allocate area for "
+ "device information.\n");
+ return result;
+ }
+ __wlp_fill_device_info(wlp);
+ return 0;
+}
+
+/**
+ * Remove information about neighbor stored temporarily
+ *
+ * Information learned during discovey should only be stored when the
+ * device enrolls in the neighbor's WSS. We do need to store this
+ * information temporarily in order to present it to the user.
+ *
+ * We are only interested in keeping neighbor WSS information if that
+ * neighbor is accepting enrollment.
+ *
+ * should be called with wlp->nbmutex held
+ */
+void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *neighbor)
+{
+ struct wlp_wssid_e *wssid_e, *next;
+ u8 keep;
+ if (!list_empty(&neighbor->wssid)) {
+ list_for_each_entry_safe(wssid_e, next, &neighbor->wssid,
+ node) {
+ if (wssid_e->info != NULL) {
+ keep = wssid_e->info->accept_enroll;
+ kfree(wssid_e->info);
+ wssid_e->info = NULL;
+ if (!keep) {
+ list_del(&wssid_e->node);
+ kfree(wssid_e);
+ }
+ }
+ }
+ }
+ if (neighbor->info != NULL) {
+ kfree(neighbor->info);
+ neighbor->info = NULL;
+ }
+}
+
+/**
+ * Populate WLP neighborhood cache with neighbor information
+ *
+ * A new neighbor is found. If it is discoverable then we add it to the
+ * neighborhood cache.
+ *
+ */
+static
+int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev)
+{
+ int result = 0;
+ int discoverable;
+ struct wlp_neighbor_e *neighbor;
+
+ d_fnstart(6, &dev->dev, "uwb %p \n", dev);
+ d_printf(6, &dev->dev, "Found neighbor device %02x:%02x \n",
+ dev->dev_addr.data[1], dev->dev_addr.data[0]);
+ /**
+ * FIXME:
+ * Use contents of WLP IE found in beacon cache to determine if
+ * neighbor is discoverable.
+ * The device does not support WLP IE yet so this still needs to be
+ * done. Until then we assume all devices are discoverable.
+ */
+ discoverable = 1; /* will be changed when FIXME disappears */
+ if (discoverable) {
+ /* Add neighbor to cache for discovery */
+ neighbor = kzalloc(sizeof(*neighbor), GFP_KERNEL);
+ if (neighbor == NULL) {
+ dev_err(&dev->dev, "Unable to create memory for "
+ "new neighbor. \n");
+ result = -ENOMEM;
+ goto error_no_mem;
+ }
+ wlp_neighbor_init(neighbor);
+ uwb_dev_get(dev);
+ neighbor->uwb_dev = dev;
+ list_add(&neighbor->node, &wlp->neighbors);
+ }
+error_no_mem:
+ d_fnend(6, &dev->dev, "uwb %p, result = %d \n", dev, result);
+ return result;
+}
+
+/**
+ * Remove one neighbor from cache
+ */
+static
+void __wlp_neighbor_release(struct wlp_neighbor_e *neighbor)
+{
+ struct wlp_wssid_e *wssid_e, *next_wssid_e;
+
+ list_for_each_entry_safe(wssid_e, next_wssid_e,
+ &neighbor->wssid, node) {
+ list_del(&wssid_e->node);
+ kfree(wssid_e);
+ }
+ uwb_dev_put(neighbor->uwb_dev);
+ list_del(&neighbor->node);
+ kfree(neighbor);
+}
+
+/**
+ * Clear entire neighborhood cache.
+ */
+static
+void __wlp_neighbors_release(struct wlp *wlp)
+{
+ struct wlp_neighbor_e *neighbor, *next;
+ if (list_empty(&wlp->neighbors))
+ return;
+ list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
+ __wlp_neighbor_release(neighbor);
+ }
+}
+
+static
+void wlp_neighbors_release(struct wlp *wlp)
+{
+ mutex_lock(&wlp->nbmutex);
+ __wlp_neighbors_release(wlp);
+ mutex_unlock(&wlp->nbmutex);
+}
+
+
+
+/**
+ * Send D1 message to neighbor, receive D2 message
+ *
+ * @neighbor: neighbor to which D1 message will be sent
+ * @wss: if not NULL, it is an enrollment request for this WSS
+ * @wssid: if wss not NULL, this is the wssid of the WSS in which we
+ * want to enroll
+ *
+ * A D1/D2 exchange is done for one of two reasons: discovery or
+ * enrollment. If done for discovery the D1 message is sent to the neighbor
+ * and the contents of the D2 response is stored in a temporary cache.
+ * If done for enrollment the @wss and @wssid are provided also. In this
+ * case the D1 message is sent to the neighbor, the D2 response is parsed
+ * for enrollment of the WSS with wssid.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
+ struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+ int result;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ DECLARE_COMPLETION_ONSTACK(completion);
+ struct wlp_session session;
+ struct sk_buff *skb;
+ struct wlp_frame_assoc *resp;
+ struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
+
+ mutex_lock(&wlp->mutex);
+ if (!wlp_uuid_is_set(&wlp->uuid)) {
+ dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
+ "proceed.\n");
+ result = -ENXIO;
+ goto out;
+ }
+ /* Send D1 association frame */
+ result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_D1);
+ if (result < 0) {
+ dev_err(dev, "Unable to send D1 frame to neighbor "
+ "%02x:%02x (%d)\n", dev_addr->data[1],
+ dev_addr->data[0], result);
+ d_printf(6, dev, "Add placeholders into buffer next to "
+ "neighbor information we have (dev address).\n");
+ goto out;
+ }
+ /* Create session, wait for response */
+ session.exp_message = WLP_ASSOC_D2;
+ session.cb = wlp_session_cb;
+ session.cb_priv = &completion;
+ session.neighbor_addr = *dev_addr;
+ BUG_ON(wlp->session != NULL);
+ wlp->session = &session;
+ /* Wait for D2/F0 frame */
+ result = wait_for_completion_interruptible_timeout(&completion,
+ WLP_PER_MSG_TIMEOUT * HZ);
+ if (result == 0) {
+ result = -ETIMEDOUT;
+ dev_err(dev, "Timeout while sending D1 to neighbor "
+ "%02x:%02x.\n", dev_addr->data[1],
+ dev_addr->data[0]);
+ goto error_session;
+ }
+ if (result < 0) {
+ dev_err(dev, "Unable to discover/enroll neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ goto error_session;
+ }
+ /* Parse message in session->data: it will be either D2 or F0 */
+ skb = session.data;
+ resp = (void *) skb->data;
+ d_printf(6, dev, "Received response to D1 frame. \n");
+ d_dump(6, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+
+ if (resp->type == WLP_ASSOC_F0) {
+ result = wlp_parse_f0(wlp, skb);
+ if (result < 0)
+ dev_err(dev, "WLP: Unable to parse F0 from neighbor "
+ "%02x:%02x.\n", dev_addr->data[1],
+ dev_addr->data[0]);
+ result = -EINVAL;
+ goto error_resp_parse;
+ }
+ if (wss == NULL) {
+ /* Discovery */
+ result = wlp_parse_d2_frame_to_cache(wlp, skb, neighbor);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to parse D2 message from "
+ "neighbor %02x:%02x for discovery.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ goto error_resp_parse;
+ }
+ } else {
+ /* Enrollment */
+ result = wlp_parse_d2_frame_to_enroll(wss, skb, neighbor,
+ wssid);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to parse D2 message from "
+ "neighbor %02x:%02x for enrollment.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ goto error_resp_parse;
+ }
+ }
+error_resp_parse:
+ kfree_skb(skb);
+error_session:
+ wlp->session = NULL;
+out:
+ mutex_unlock(&wlp->mutex);
+ return result;
+}
+
+/**
+ * Enroll into WSS of provided WSSID by using neighbor as registrar
+ *
+ * &wss->mutex is held
+ */
+int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
+ struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_fnstart(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
+ wlp, neighbor, wss, wssid, buf);
+ d_printf(6, dev, "Complete me.\n");
+ result = wlp_d1d2_exchange(wlp, neighbor, wss, wssid);
+ if (result < 0) {
+ dev_err(dev, "WLP: D1/D2 message exchange for enrollment "
+ "failed. result = %d \n", result);
+ goto out;
+ }
+ if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
+ dev_err(dev, "WLP: Unable to enroll into WSS %s using "
+ "neighbor %02x:%02x. \n", buf,
+ dev_addr->data[1], dev_addr->data[0]);
+ result = -EINVAL;
+ goto out;
+ }
+ if (wss->secure_status == WLP_WSS_SECURE) {
+ dev_err(dev, "FIXME: need to complete secure enrollment.\n");
+ result = -EINVAL;
+ goto error;
+ } else {
+ wss->state = WLP_WSS_STATE_ENROLLED;
+ d_printf(2, dev, "WLP: Success Enrollment into unsecure WSS "
+ "%s using neighbor %02x:%02x. \n", buf,
+ dev_addr->data[1], dev_addr->data[0]);
+ }
+
+ d_fnend(6, dev, "wlp %p, neighbor %p, wss %p, wssid %p (%s)\n",
+ wlp, neighbor, wss, wssid, buf);
+out:
+ return result;
+error:
+ wlp_wss_reset(wss);
+ return result;
+}
+
+/**
+ * Discover WSS information of neighbor's active WSS
+ */
+static
+int wlp_discover_neighbor(struct wlp *wlp,
+ struct wlp_neighbor_e *neighbor)
+{
+ return wlp_d1d2_exchange(wlp, neighbor, NULL, NULL);
+}
+
+
+/**
+ * Each neighbor in the neighborhood cache is discoverable. Discover it.
+ *
+ * Discovery is done through sending of D1 association frame and parsing
+ * the D2 association frame response. Only wssid from D2 will be included
+ * in neighbor cache, rest is just displayed to user and forgotten.
+ *
+ * The discovery is not done in parallel. This is simple and enables us to
+ * maintain only one association context.
+ *
+ * The discovery of one neighbor does not affect the other, but if the
+ * discovery of a neighbor fails it is removed from the neighborhood cache.
+ */
+static
+int wlp_discover_all_neighbors(struct wlp *wlp)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_neighbor_e *neighbor, *next;
+
+ list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
+ result = wlp_discover_neighbor(wlp, neighbor);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to discover neighbor "
+ "%02x:%02x, removing from neighborhood. \n",
+ neighbor->uwb_dev->dev_addr.data[1],
+ neighbor->uwb_dev->dev_addr.data[0]);
+ __wlp_neighbor_release(neighbor);
+ }
+ }
+ return result;
+}
+
+static int wlp_add_neighbor_helper(struct device *dev, void *priv)
+{
+ struct wlp *wlp = priv;
+ struct uwb_dev *uwb_dev = to_uwb_dev(dev);
+
+ return wlp_add_neighbor(wlp, uwb_dev);
+}
+
+/**
+ * Discover WLP neighborhood
+ *
+ * Will send D1 association frame to all devices in beacon group that have
+ * discoverable bit set in WLP IE. D2 frames will be received, information
+ * displayed to user in @buf. Partial information (from D2 association
+ * frame) will be cached to assist with future association
+ * requests.
+ *
+ * The discovery of the WLP neighborhood is triggered by the user. This
+ * should occur infrequently and we thus free current cache and re-allocate
+ * memory if needed.
+ *
+ * If one neighbor fails during initial discovery (determining if it is a
+ * neighbor or not), we fail all - note that interaction with neighbor has
+ * not occured at this point so if a failure occurs we know something went wrong
+ * locally. We thus undo everything.
+ */
+ssize_t wlp_discover(struct wlp *wlp)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+
+ d_fnstart(6, dev, "wlp %p \n", wlp);
+ mutex_lock(&wlp->nbmutex);
+ /* Clear current neighborhood cache. */
+ __wlp_neighbors_release(wlp);
+ /* Determine which devices in neighborhood. Repopulate cache. */
+ result = uwb_dev_for_each(wlp->rc, wlp_add_neighbor_helper, wlp);
+ if (result < 0) {
+ /* May have partial neighbor information, release all. */
+ __wlp_neighbors_release(wlp);
+ goto error_dev_for_each;
+ }
+ /* Discover the properties of devices in neighborhood. */
+ result = wlp_discover_all_neighbors(wlp);
+ /* In case of failure we still print our partial results. */
+ if (result < 0) {
+ dev_err(dev, "Unable to fully discover neighborhood. \n");
+ result = 0;
+ }
+error_dev_for_each:
+ mutex_unlock(&wlp->nbmutex);
+ d_fnend(6, dev, "wlp %p \n", wlp);
+ return result;
+}
+
+/**
+ * Handle events from UWB stack
+ *
+ * We handle events conservatively. If a neighbor goes off the air we
+ * remove it from the neighborhood. If an association process is in
+ * progress this function will block waiting for the nbmutex to become
+ * free. The association process will thus be allowed to complete before it
+ * is removed.
+ */
+static
+void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
+ enum uwb_notifs event)
+{
+ struct wlp *wlp = _wlp;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_neighbor_e *neighbor, *next;
+ int result;
+ switch (event) {
+ case UWB_NOTIF_ONAIR:
+ d_printf(6, dev, "UWB device %02x:%02x is onair\n",
+ uwb_dev->dev_addr.data[1],
+ uwb_dev->dev_addr.data[0]);
+ result = wlp_eda_create_node(&wlp->eda,
+ uwb_dev->mac_addr.data,
+ &uwb_dev->dev_addr);
+ if (result < 0)
+ dev_err(dev, "WLP: Unable to add new neighbor "
+ "%02x:%02x to EDA cache.\n",
+ uwb_dev->dev_addr.data[1],
+ uwb_dev->dev_addr.data[0]);
+ break;
+ case UWB_NOTIF_OFFAIR:
+ d_printf(6, dev, "UWB device %02x:%02x is offair\n",
+ uwb_dev->dev_addr.data[1],
+ uwb_dev->dev_addr.data[0]);
+ wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr);
+ mutex_lock(&wlp->nbmutex);
+ list_for_each_entry_safe(neighbor, next, &wlp->neighbors,
+ node) {
+ if (neighbor->uwb_dev == uwb_dev) {
+ d_printf(6, dev, "Removing device from "
+ "neighborhood.\n");
+ __wlp_neighbor_release(neighbor);
+ }
+ }
+ mutex_unlock(&wlp->nbmutex);
+ break;
+ default:
+ dev_err(dev, "don't know how to handle event %d from uwb\n",
+ event);
+ }
+}
+
+int wlp_setup(struct wlp *wlp, struct uwb_rc *rc)
+{
+ struct device *dev = &rc->uwb_dev.dev;
+ int result;
+
+ d_fnstart(6, dev, "wlp %p\n", wlp);
+ BUG_ON(wlp->fill_device_info == NULL);
+ BUG_ON(wlp->xmit_frame == NULL);
+ BUG_ON(wlp->stop_queue == NULL);
+ BUG_ON(wlp->start_queue == NULL);
+ wlp->rc = rc;
+ wlp_eda_init(&wlp->eda);/* Set up address cache */
+ wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb;
+ wlp->uwb_notifs_handler.data = wlp;
+ uwb_notifs_register(rc, &wlp->uwb_notifs_handler);
+
+ uwb_pal_init(&wlp->pal);
+ result = uwb_pal_register(rc, &wlp->pal);
+ if (result < 0)
+ uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
+
+ d_fnend(6, dev, "wlp %p, result = %d\n", wlp, result);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_setup);
+
+void wlp_remove(struct wlp *wlp)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ d_fnstart(6, dev, "wlp %p\n", wlp);
+ wlp_neighbors_release(wlp);
+ uwb_pal_unregister(wlp->rc, &wlp->pal);
+ uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
+ wlp_eda_release(&wlp->eda);
+ mutex_lock(&wlp->mutex);
+ if (wlp->dev_info != NULL)
+ kfree(wlp->dev_info);
+ mutex_unlock(&wlp->mutex);
+ wlp->rc = NULL;
+ /* We have to use NULL here because this function can be called
+ * when the device disappeared. */
+ d_fnend(6, NULL, "wlp %p\n", wlp);
+}
+EXPORT_SYMBOL_GPL(wlp_remove);
+
+/**
+ * wlp_reset_all - reset the WLP hardware
+ * @wlp: the WLP device to reset.
+ *
+ * This schedules a full hardware reset of the WLP device. The radio
+ * controller and any other PALs will also be reset.
+ */
+void wlp_reset_all(struct wlp *wlp)
+{
+ uwb_rc_reset_all(wlp->rc);
+}
+EXPORT_SYMBOL_GPL(wlp_reset_all);
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2007 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * Implementation of the WLP association protocol.
+ *
+ * FIXME: Docs
+ *
+ * A UWB network interface will configure a WSS through wlp_wss_setup() after
+ * the interface has been assigned a MAC address, typically after
+ * "ifconfig" has been called. When the interface goes down it should call
+ * wlp_wss_remove().
+ *
+ * When the WSS is ready for use the user interacts via sysfs to create,
+ * discover, and activate WSS.
+ *
+ * wlp_wss_enroll_activate()
+ *
+ * wlp_wss_create_activate()
+ * wlp_wss_set_wssid_hash()
+ * wlp_wss_comp_wssid_hash()
+ * wlp_wss_sel_bcast_addr()
+ * wlp_wss_sysfs_add()
+ *
+ * Called when no more references to WSS exist:
+ * wlp_wss_release()
+ * wlp_wss_reset()
+ */
+
+#include <linux/etherdevice.h> /* for is_valid_ether_addr */
+#include <linux/skbuff.h>
+#include <linux/wlp.h>
+#define D_LOCAL 5
+#include <linux/uwb/debug.h>
+#include "wlp-internal.h"
+
+
+size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key)
+{
+ size_t result;
+
+ result = scnprintf(buf, bufsize,
+ "%02x %02x %02x %02x %02x %02x "
+ "%02x %02x %02x %02x %02x %02x "
+ "%02x %02x %02x %02x",
+ key[0], key[1], key[2], key[3],
+ key[4], key[5], key[6], key[7],
+ key[8], key[9], key[10], key[11],
+ key[12], key[13], key[14], key[15]);
+ return result;
+}
+
+/**
+ * Compute WSSID hash
+ * WLP Draft 0.99 [7.2.1]
+ *
+ * The WSSID hash for a WSSID is the result of an octet-wise exclusive-OR
+ * of all octets in the WSSID.
+ */
+static
+u8 wlp_wss_comp_wssid_hash(struct wlp_uuid *wssid)
+{
+ return wssid->data[0] ^ wssid->data[1] ^ wssid->data[2]
+ ^ wssid->data[3] ^ wssid->data[4] ^ wssid->data[5]
+ ^ wssid->data[6] ^ wssid->data[7] ^ wssid->data[8]
+ ^ wssid->data[9] ^ wssid->data[10] ^ wssid->data[11]
+ ^ wssid->data[12] ^ wssid->data[13] ^ wssid->data[14]
+ ^ wssid->data[15];
+}
+
+/**
+ * Select a multicast EUI-48 for the WSS broadcast address.
+ * WLP Draft 0.99 [7.2.1]
+ *
+ * Selected based on the WiMedia Alliance OUI, 00-13-88, within the WLP
+ * range, [01-13-88-00-01-00, 01-13-88-00-01-FF] inclusive.
+ *
+ * This address is currently hardcoded.
+ * FIXME?
+ */
+static
+struct uwb_mac_addr wlp_wss_sel_bcast_addr(struct wlp_wss *wss)
+{
+ struct uwb_mac_addr bcast = {
+ .data = { 0x01, 0x13, 0x88, 0x00, 0x01, 0x00 }
+ };
+ return bcast;
+}
+
+/**
+ * Clear the contents of the WSS structure - all except kobj, mutex, virtual
+ *
+ * We do not want to reinitialize - the internal kobj should not change as
+ * it still points to the parent received during setup. The mutex should
+ * remain also. We thus just reset values individually.
+ * The virutal address assigned to WSS will remain the same for the
+ * lifetime of the WSS. We only reset the fields that can change during its
+ * lifetime.
+ */
+void wlp_wss_reset(struct wlp_wss *wss)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ d_fnstart(5, dev, "wss (%p) \n", wss);
+ memset(&wss->wssid, 0, sizeof(wss->wssid));
+ wss->hash = 0;
+ memset(&wss->name[0], 0, sizeof(wss->name));
+ memset(&wss->bcast, 0, sizeof(wss->bcast));
+ wss->secure_status = WLP_WSS_UNSECURE;
+ memset(&wss->master_key[0], 0, sizeof(wss->master_key));
+ wss->tag = 0;
+ wss->state = WLP_WSS_STATE_NONE;
+ d_fnend(5, dev, "wss (%p) \n", wss);
+}
+
+/**
+ * Create sysfs infrastructure for WSS
+ *
+ * The WSS is configured to have the interface as parent (see wlp_wss_setup())
+ * a new sysfs directory that includes wssid as its name is created in the
+ * interface's sysfs directory. The group of files interacting with WSS are
+ * created also.
+ */
+static
+int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result;
+
+ d_fnstart(5, dev, "wss (%p), wssid: %s\n", wss, wssid_str);
+ result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str);
+ if (result < 0)
+ return result;
+ wss->kobj.ktype = &wss_ktype;
+ result = kobject_init_and_add(&wss->kobj,
+ &wss_ktype, wss->kobj.parent, "wlp");
+ if (result < 0) {
+ dev_err(dev, "WLP: Cannot register WSS kobject.\n");
+ goto error_kobject_register;
+ }
+ result = sysfs_create_group(&wss->kobj, &wss_attr_group);
+ if (result < 0) {
+ dev_err(dev, "WLP: Cannot register WSS attributes: %d\n",
+ result);
+ goto error_sysfs_create_group;
+ }
+ d_fnend(5, dev, "Completed. result = %d \n", result);
+ return 0;
+error_sysfs_create_group:
+
+ kobject_put(&wss->kobj); /* will free name if needed */
+ return result;
+error_kobject_register:
+ kfree(wss->kobj.name);
+ wss->kobj.name = NULL;
+ wss->kobj.ktype = NULL;
+ return result;
+}
+
+
+/**
+ * Release WSS
+ *
+ * No more references exist to this WSS. We should undo everything that was
+ * done in wlp_wss_create_activate() except removing the group. The group
+ * is not removed because an object can be unregistered before the group is
+ * created. We also undo any additional operations on the WSS after this
+ * (addition of members).
+ *
+ * If memory was allocated for the kobject's name then it will
+ * be freed by the kobject system during this time.
+ *
+ * The EDA cache is removed and reinitilized when the WSS is removed. We
+ * thus loose knowledge of members of this WSS at that time and need not do
+ * it here.
+ */
+void wlp_wss_release(struct kobject *kobj)
+{
+ struct wlp_wss *wss = container_of(kobj, struct wlp_wss, kobj);
+
+ wlp_wss_reset(wss);
+}
+
+/**
+ * Enroll into a WSS using provided neighbor as registrar
+ *
+ * First search the neighborhood information to learn which neighbor is
+ * referred to, next proceed with enrollment.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid,
+ struct uwb_dev_addr *dest)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_neighbor_e *neighbor;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ int result = -ENXIO;
+ struct uwb_dev_addr *dev_addr;
+
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_fnstart(5, dev, "wss %p, wssid %s, registrar %02x:%02x \n",
+ wss, buf, dest->data[1], dest->data[0]);
+ mutex_lock(&wlp->nbmutex);
+ list_for_each_entry(neighbor, &wlp->neighbors, node) {
+ dev_addr = &neighbor->uwb_dev->dev_addr;
+ if (!memcmp(dest, dev_addr, sizeof(*dest))) {
+ d_printf(5, dev, "Neighbor %02x:%02x is valid, "
+ "enrolling. \n",
+ dev_addr->data[1], dev_addr->data[0]);
+ result = wlp_enroll_neighbor(wlp, neighbor, wss,
+ wssid);
+ break;
+ }
+ }
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n",
+ dest->data[1], dest->data[0]);
+ mutex_unlock(&wlp->nbmutex);
+ d_fnend(5, dev, "wss %p, wssid %s, registrar %02x:%02x, result %d \n",
+ wss, buf, dest->data[1], dest->data[0], result);
+ return result;
+}
+
+/**
+ * Enroll into a WSS previously discovered
+ *
+ * User provides WSSID of WSS, search for neighbor that has this WSS
+ * activated and attempt to enroll.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct wlp_neighbor_e *neighbor;
+ struct wlp_wssid_e *wssid_e;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ int result = -ENXIO;
+
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_fnstart(5, dev, "wss %p, wssid %s \n", wss, buf);
+ mutex_lock(&wlp->nbmutex);
+ list_for_each_entry(neighbor, &wlp->neighbors, node) {
+ list_for_each_entry(wssid_e, &neighbor->wssid, node) {
+ if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) {
+ d_printf(5, dev, "Found WSSID %s in neighbor "
+ "%02x:%02x cache. \n", buf,
+ neighbor->uwb_dev->dev_addr.data[1],
+ neighbor->uwb_dev->dev_addr.data[0]);
+ result = wlp_enroll_neighbor(wlp, neighbor,
+ wss, wssid);
+ if (result == 0) /* enrollment success */
+ goto out;
+ break;
+ }
+ }
+ }
+out:
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf);
+ mutex_unlock(&wlp->nbmutex);
+ d_fnend(5, dev, "wss %p, wssid %s, result %d \n", wss, buf, result);
+ return result;
+}
+
+/**
+ * Enroll into WSS with provided WSSID, registrar may be provided
+ *
+ * @wss: out WSS that will be enrolled
+ * @wssid: wssid of neighboring WSS that we want to enroll in
+ * @devaddr: registrar can be specified, will be broadcast (ff:ff) if any
+ * neighbor can be used as registrar.
+ *
+ * &wss->mutex is held
+ */
+static
+int wlp_wss_enroll(struct wlp_wss *wss, struct wlp_uuid *wssid,
+ struct uwb_dev_addr *devaddr)
+{
+ int result;
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
+
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ if (wss->state != WLP_WSS_STATE_NONE) {
+ dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf);
+ result = -EEXIST;
+ goto error;
+ }
+ if (!memcmp(&bcast, devaddr, sizeof(bcast))) {
+ d_printf(5, dev, "Request to enroll in discovered WSS "
+ "with WSSID %s \n", buf);
+ result = wlp_wss_enroll_discovered(wss, wssid);
+ } else {
+ d_printf(5, dev, "Request to enroll in WSSID %s with "
+ "registrar %02x:%02x\n", buf, devaddr->data[1],
+ devaddr->data[0]);
+ result = wlp_wss_enroll_target(wss, wssid, devaddr);
+ }
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n",
+ buf, result);
+ goto error;
+ }
+ d_printf(2, dev, "Successfully enrolled into WSS %s \n", buf);
+ result = wlp_wss_sysfs_add(wss, buf);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n");
+ wlp_wss_reset(wss);
+ }
+error:
+ return result;
+
+}
+
+/**
+ * Activate given WSS
+ *
+ * Prior to activation a WSS must be enrolled. To activate a WSS a device
+ * includes the WSS hash in the WLP IE in its beacon in each superframe.
+ * WLP 0.99 [7.2.5].
+ *
+ * The WSS tag is also computed at this time. We only support one activated
+ * WSS so we can use the hash as a tag - there will never be a conflict.
+ *
+ * We currently only support one activated WSS so only one WSS hash is
+ * included in the WLP IE.
+ */
+static
+int wlp_wss_activate(struct wlp_wss *wss)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct uwb_rc *uwb_rc = wlp->rc;
+ int result;
+ struct {
+ struct wlp_ie wlp_ie;
+ u8 hash; /* only include one hash */
+ } ie_data;
+
+ d_fnstart(5, dev, "Activating WSS %p. \n", wss);
+ BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED);
+ wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid);
+ wss->tag = wss->hash;
+ memset(&ie_data, 0, sizeof(ie_data));
+ ie_data.wlp_ie.hdr.element_id = UWB_IE_WLP;
+ ie_data.wlp_ie.hdr.length = sizeof(ie_data) - sizeof(struct uwb_ie_hdr);
+ wlp_ie_set_hash_length(&ie_data.wlp_ie, sizeof(ie_data.hash));
+ ie_data.hash = wss->hash;
+ result = uwb_rc_ie_add(uwb_rc, &ie_data.wlp_ie.hdr,
+ sizeof(ie_data));
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to add WLP IE to beacon. "
+ "result = %d.\n", result);
+ goto error_wlp_ie;
+ }
+ wss->state = WLP_WSS_STATE_ACTIVE;
+ result = 0;
+error_wlp_ie:
+ d_fnend(5, dev, "Activating WSS %p, result = %d \n", wss, result);
+ return result;
+}
+
+/**
+ * Enroll in and activate WSS identified by provided WSSID
+ *
+ * The neighborhood cache should contain a list of all neighbors and the
+ * WSS they have activated. Based on that cache we search which neighbor we
+ * can perform the association process with. The user also has option to
+ * specify which neighbor it prefers as registrar.
+ * Successful enrollment is followed by activation.
+ * Successful activation will create the sysfs directory containing
+ * specific information regarding this WSS.
+ */
+int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
+ struct uwb_dev_addr *devaddr)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ char buf[WLP_WSS_UUID_STRSIZE];
+
+ d_fnstart(5, dev, "Enrollment and activation requested. \n");
+ mutex_lock(&wss->mutex);
+ result = wlp_wss_enroll(wss, wssid, devaddr);
+ if (result < 0) {
+ wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+ dev_err(dev, "WLP: Enrollment into WSS %s failed.\n", buf);
+ goto error_enroll;
+ }
+ result = wlp_wss_activate(wss);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to activate WSS. Undoing enrollment "
+ "result = %d \n", result);
+ /* Undo enrollment */
+ wlp_wss_reset(wss);
+ goto error_activate;
+ }
+error_activate:
+error_enroll:
+ mutex_unlock(&wss->mutex);
+ d_fnend(5, dev, "Completed. result = %d \n", result);
+ return result;
+}
+
+/**
+ * Create, enroll, and activate a new WSS
+ *
+ * @wssid: new wssid provided by user
+ * @name: WSS name requested by used.
+ * @sec_status: security status requested by user
+ *
+ * A user requested the creation of a new WSS. All operations are done
+ * locally. The new WSS will be stored locally, the hash will be included
+ * in the WLP IE, and the sysfs infrastructure for this WSS will be
+ * created.
+ */
+int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
+ char *name, unsigned sec_status, unsigned accept)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ d_fnstart(5, dev, "Request to create new WSS.\n");
+ result = wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_printf(5, dev, "Request to create WSS: WSSID=%s, name=%s, "
+ "sec_status=%u, accepting enrollment=%u \n",
+ buf, name, sec_status, accept);
+ if (!mutex_trylock(&wss->mutex)) {
+ dev_err(dev, "WLP: WLP association session in progress.\n");
+ return -EBUSY;
+ }
+ if (wss->state != WLP_WSS_STATE_NONE) {
+ dev_err(dev, "WLP: WSS already exists. Not creating new.\n");
+ result = -EEXIST;
+ goto out;
+ }
+ if (wss->kobj.parent == NULL) {
+ dev_err(dev, "WLP: WSS parent not ready. Is network interface "
+ "up?\n");
+ result = -ENXIO;
+ goto out;
+ }
+ if (sec_status == WLP_WSS_SECURE) {
+ dev_err(dev, "WLP: FIXME Creation of secure WSS not "
+ "supported yet.\n");
+ result = -EINVAL;
+ goto out;
+ }
+ wss->wssid = *wssid;
+ memcpy(wss->name, name, sizeof(wss->name));
+ wss->bcast = wlp_wss_sel_bcast_addr(wss);
+ wss->secure_status = sec_status;
+ wss->accept_enroll = accept;
+ /*wss->virtual_addr is initialized in call to wlp_wss_setup*/
+ /* sysfs infrastructure */
+ result = wlp_wss_sysfs_add(wss, buf);
+ if (result < 0) {
+ dev_err(dev, "Cannot set up sysfs for WSS kobject.\n");
+ wlp_wss_reset(wss);
+ goto out;
+ } else
+ result = 0;
+ wss->state = WLP_WSS_STATE_ENROLLED;
+ result = wlp_wss_activate(wss);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to activate WSS. Undoing "
+ "enrollment\n");
+ wlp_wss_reset(wss);
+ goto out;
+ }
+ result = 0;
+out:
+ mutex_unlock(&wss->mutex);
+ d_fnend(5, dev, "Completed. result = %d \n", result);
+ return result;
+}
+
+/**
+ * Determine if neighbor has WSS activated
+ *
+ * @returns: 1 if neighbor has WSS activated, zero otherwise
+ *
+ * This can be done in two ways:
+ * - send a C1 frame, parse C2/F0 response
+ * - examine the WLP IE sent by the neighbor
+ *
+ * The WLP IE is not fully supported in hardware so we use the C1/C2 frame
+ * exchange to determine if a WSS is activated. Using the WLP IE should be
+ * faster and should be used when it becomes possible.
+ */
+int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
+ struct uwb_dev_addr *dev_addr)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ DECLARE_COMPLETION_ONSTACK(completion);
+ struct wlp_session session;
+ struct sk_buff *skb;
+ struct wlp_frame_assoc *resp;
+ struct wlp_uuid wssid;
+
+ wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+ d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+ wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+ mutex_lock(&wlp->mutex);
+ /* Send C1 association frame */
+ result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1);
+ if (result < 0) {
+ dev_err(dev, "Unable to send C1 frame to neighbor "
+ "%02x:%02x (%d)\n", dev_addr->data[1],
+ dev_addr->data[0], result);
+ result = 0;
+ goto out;
+ }
+ /* Create session, wait for response */
+ session.exp_message = WLP_ASSOC_C2;
+ session.cb = wlp_session_cb;
+ session.cb_priv = &completion;
+ session.neighbor_addr = *dev_addr;
+ BUG_ON(wlp->session != NULL);
+ wlp->session = &session;
+ /* Wait for C2/F0 frame */
+ result = wait_for_completion_interruptible_timeout(&completion,
+ WLP_PER_MSG_TIMEOUT * HZ);
+ if (result == 0) {
+ dev_err(dev, "Timeout while sending C1 to neighbor "
+ "%02x:%02x.\n", dev_addr->data[1],
+ dev_addr->data[0]);
+ goto out;
+ }
+ if (result < 0) {
+ dev_err(dev, "Unable to send C1 to neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ result = 0;
+ goto out;
+ }
+ /* Parse message in session->data: it will be either C2 or F0 */
+ skb = session.data;
+ resp = (void *) skb->data;
+ d_printf(5, dev, "Received response to C1 frame. \n");
+ d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+ if (resp->type == WLP_ASSOC_F0) {
+ result = wlp_parse_f0(wlp, skb);
+ if (result < 0)
+ dev_err(dev, "WLP: unable to parse incoming F0 "
+ "frame from neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ result = 0;
+ goto error_resp_parse;
+ }
+ /* WLP version and message type fields have already been parsed */
+ result = wlp_get_wssid(wlp, (void *)resp + sizeof(*resp), &wssid,
+ skb->len - sizeof(*resp));
+ if (result < 0) {
+ dev_err(dev, "WLP: unable to obtain WSSID from C2 frame.\n");
+ result = 0;
+ goto error_resp_parse;
+ }
+ if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
+ d_printf(5, dev, "WSSID in C2 frame matches local "
+ "active WSS.\n");
+ result = 1;
+ } else {
+ dev_err(dev, "WLP: Received a C2 frame without matching "
+ "WSSID.\n");
+ result = 0;
+ }
+error_resp_parse:
+ kfree_skb(skb);
+out:
+ wlp->session = NULL;
+ mutex_unlock(&wlp->mutex);
+ d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+ wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+ return result;
+}
+
+/**
+ * Activate connection with neighbor by updating EDA cache
+ *
+ * @wss: local WSS to which neighbor wants to connect
+ * @dev_addr: neighbor's address
+ * @wssid: neighbor's WSSID - must be same as our WSS's WSSID
+ * @tag: neighbor's WSS tag used to identify frames transmitted by it
+ * @virt_addr: neighbor's virtual EUI-48
+ */
+static
+int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss,
+ struct uwb_dev_addr *dev_addr,
+ struct wlp_uuid *wssid, u8 *tag,
+ struct uwb_mac_addr *virt_addr)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ wlp_wss_uuid_print(buf, sizeof(buf), wssid);
+ d_fnstart(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
+ "%02x:%02x:%02x:%02x:%02x:%02x \n", wlp, wss, buf, *tag,
+ virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+ virt_addr->data[3], virt_addr->data[4], virt_addr->data[5]);
+
+ if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) {
+ d_printf(5, dev, "WSSID from neighbor frame matches local "
+ "active WSS.\n");
+ /* Update EDA cache */
+ result = wlp_eda_update_node(&wlp->eda, dev_addr, wss,
+ (void *) virt_addr->data, *tag,
+ WLP_WSS_CONNECTED);
+ if (result < 0)
+ dev_err(dev, "WLP: Unable to update EDA cache "
+ "with new connected neighbor information.\n");
+ } else {
+ dev_err(dev, "WLP: Neighbor does not have matching "
+ "WSSID.\n");
+ result = -EINVAL;
+ }
+
+ d_fnend(5, dev, "wlp %p, wss %p, wssid %s, tag %u, virtual "
+ "%02x:%02x:%02x:%02x:%02x:%02x, result = %d \n",
+ wlp, wss, buf, *tag,
+ virt_addr->data[0], virt_addr->data[1], virt_addr->data[2],
+ virt_addr->data[3], virt_addr->data[4], virt_addr->data[5],
+ result);
+
+ return result;
+}
+
+/**
+ * Connect to WSS neighbor
+ *
+ * Use C3/C4 exchange to determine if neighbor has WSS activated and
+ * retrieve the WSS tag and virtual EUI-48 of the neighbor.
+ */
+static
+int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
+ struct uwb_dev_addr *dev_addr)
+{
+ int result;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ char buf[WLP_WSS_UUID_STRSIZE];
+ struct wlp_uuid wssid;
+ u8 tag;
+ struct uwb_mac_addr virt_addr;
+ DECLARE_COMPLETION_ONSTACK(completion);
+ struct wlp_session session;
+ struct wlp_frame_assoc *resp;
+ struct sk_buff *skb;
+
+ wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+ d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+ wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+ mutex_lock(&wlp->mutex);
+ /* Send C3 association frame */
+ result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3);
+ if (result < 0) {
+ dev_err(dev, "Unable to send C3 frame to neighbor "
+ "%02x:%02x (%d)\n", dev_addr->data[1],
+ dev_addr->data[0], result);
+ goto out;
+ }
+ /* Create session, wait for response */
+ session.exp_message = WLP_ASSOC_C4;
+ session.cb = wlp_session_cb;
+ session.cb_priv = &completion;
+ session.neighbor_addr = *dev_addr;
+ BUG_ON(wlp->session != NULL);
+ wlp->session = &session;
+ /* Wait for C4/F0 frame */
+ result = wait_for_completion_interruptible_timeout(&completion,
+ WLP_PER_MSG_TIMEOUT * HZ);
+ if (result == 0) {
+ dev_err(dev, "Timeout while sending C3 to neighbor "
+ "%02x:%02x.\n", dev_addr->data[1],
+ dev_addr->data[0]);
+ result = -ETIMEDOUT;
+ goto out;
+ }
+ if (result < 0) {
+ dev_err(dev, "Unable to send C3 to neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ goto out;
+ }
+ /* Parse message in session->data: it will be either C4 or F0 */
+ skb = session.data;
+ resp = (void *) skb->data;
+ d_printf(5, dev, "Received response to C3 frame. \n");
+ d_dump(5, dev, skb->data, skb->len > 72 ? 72 : skb->len);
+ if (resp->type == WLP_ASSOC_F0) {
+ result = wlp_parse_f0(wlp, skb);
+ if (result < 0)
+ dev_err(dev, "WLP: unable to parse incoming F0 "
+ "frame from neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ result = -EINVAL;
+ goto error_resp_parse;
+ }
+ result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to parse C4 frame from neighbor.\n");
+ goto error_resp_parse;
+ }
+ result = wlp_wss_activate_connection(wlp, wss, dev_addr, &wssid, &tag,
+ &virt_addr);
+ if (result < 0) {
+ dev_err(dev, "WLP: Unable to activate connection to "
+ "neighbor %02x:%02x.\n", dev_addr->data[1],
+ dev_addr->data[0]);
+ goto error_resp_parse;
+ }
+error_resp_parse:
+ kfree_skb(skb);
+out:
+ /* Record that we unsuccessfully tried to connect to this neighbor */
+ if (result < 0)
+ wlp_eda_update_node_state(&wlp->eda, dev_addr,
+ WLP_WSS_CONNECT_FAILED);
+ wlp->session = NULL;
+ mutex_unlock(&wlp->mutex);
+ d_fnend(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+ wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+ return result;
+}
+
+/**
+ * Connect to neighbor with common WSS, send pending frame
+ *
+ * This function is scheduled when a frame is destined to a neighbor with
+ * which we do not have a connection. A copy of the EDA cache entry is
+ * provided - not the actual cache entry (because it is protected by a
+ * spinlock).
+ *
+ * First determine if neighbor has the same WSS activated, connect if it
+ * does. The C3/C4 exchange is dual purpose to determine if neighbor has
+ * WSS activated and proceed with the connection.
+ *
+ * The frame that triggered the connection setup is sent after connection
+ * setup.
+ *
+ * network queue is stopped - we need to restart when done
+ *
+ */
+static
+void wlp_wss_connect_send(struct work_struct *ws)
+{
+ struct wlp_assoc_conn_ctx *conn_ctx = container_of(ws,
+ struct wlp_assoc_conn_ctx,
+ ws);
+ struct wlp *wlp = conn_ctx->wlp;
+ struct sk_buff *skb = conn_ctx->skb;
+ struct wlp_eda_node *eda_entry = &conn_ctx->eda_entry;
+ struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+ struct wlp_wss *wss = &wlp->wss;
+ int result;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ char buf[WLP_WSS_UUID_STRSIZE];
+
+ mutex_lock(&wss->mutex);
+ wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
+ d_fnstart(5, dev, "wlp %p, wss %p (wssid %s), neighbor %02x:%02x \n",
+ wlp, wss, buf, dev_addr->data[1], dev_addr->data[0]);
+ if (wss->state < WLP_WSS_STATE_ACTIVE) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Attempting to connect with "
+ "WSS that is not active or connected.\n");
+ dev_kfree_skb(skb);
+ goto out;
+ }
+ /* Establish connection - send C3 rcv C4 */
+ result = wlp_wss_connect_neighbor(wlp, wss, dev_addr);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to establish connection "
+ "with neighbor %02x:%02x.\n",
+ dev_addr->data[1], dev_addr->data[0]);
+ dev_kfree_skb(skb);
+ goto out;
+ }
+ /* EDA entry changed, update the local copy being used */
+ result = wlp_copy_eda_node(&wlp->eda, dev_addr, eda_entry);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Cannot find EDA entry for "
+ "neighbor %02x:%02x \n",
+ dev_addr->data[1], dev_addr->data[0]);
+ }
+ result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to prepare frame header for "
+ "transmission (neighbor %02x:%02x). \n",
+ dev_addr->data[1], dev_addr->data[0]);
+ dev_kfree_skb(skb);
+ goto out;
+ }
+ BUG_ON(wlp->xmit_frame == NULL);
+ result = wlp->xmit_frame(wlp, skb, dev_addr);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to transmit frame: %d\n",
+ result);
+ if (result == -ENXIO)
+ dev_err(dev, "WLP: Is network interface up? \n");
+ /* We could try again ... */
+ dev_kfree_skb(skb);/*we need to free if tx fails */
+ }
+out:
+ kfree(conn_ctx);
+ BUG_ON(wlp->start_queue == NULL);
+ wlp->start_queue(wlp);
+ mutex_unlock(&wss->mutex);
+ d_fnend(5, dev, "wlp %p, wss %p (wssid %s)\n", wlp, wss, buf);
+}
+
+/**
+ * Add WLP header to outgoing skb
+ *
+ * @eda_entry: pointer to neighbor's entry in the EDA cache
+ * @_skb: skb containing data destined to the neighbor
+ */
+int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+ void *_skb)
+{
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ unsigned char *eth_addr = eda_entry->eth_addr;
+ struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+ struct sk_buff *skb = _skb;
+ struct wlp_frame_std_abbrv_hdr *std_hdr;
+
+ d_fnstart(6, dev, "wlp %p \n", wlp);
+ if (eda_entry->state == WLP_WSS_CONNECTED) {
+ /* Add WLP header */
+ BUG_ON(skb_headroom(skb) < sizeof(*std_hdr));
+ std_hdr = (void *) __skb_push(skb, sizeof(*std_hdr));
+ std_hdr->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
+ std_hdr->hdr.type = WLP_FRAME_STANDARD;
+ std_hdr->tag = eda_entry->wss->tag;
+ } else {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Destination neighbor (Ethernet: "
+ "%02x:%02x:%02x:%02x:%02x:%02x, Dev: "
+ "%02x:%02x) is not connected. \n", eth_addr[0],
+ eth_addr[1], eth_addr[2], eth_addr[3],
+ eth_addr[4], eth_addr[5], dev_addr->data[1],
+ dev_addr->data[0]);
+ result = -EINVAL;
+ }
+ d_fnend(6, dev, "wlp %p \n", wlp);
+ return result;
+}
+
+
+/**
+ * Prepare skb for neighbor: connect if not already and prep WLP header
+ *
+ * This function is called in interrupt context, but it needs to sleep. We
+ * temporarily stop the net queue to establish the WLP connection.
+ * Setup of the WLP connection and restart of queue is scheduled
+ * on the default work queue.
+ *
+ * run with eda->lock held (spinlock)
+ */
+int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+ void *_skb)
+{
+ int result = 0;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+ unsigned char *eth_addr = eda_entry->eth_addr;
+ struct sk_buff *skb = _skb;
+ struct wlp_assoc_conn_ctx *conn_ctx;
+
+ d_fnstart(5, dev, "wlp %p\n", wlp);
+ d_printf(5, dev, "To neighbor %02x:%02x with eth "
+ "%02x:%02x:%02x:%02x:%02x:%02x\n", dev_addr->data[1],
+ dev_addr->data[0], eth_addr[0], eth_addr[1], eth_addr[2],
+ eth_addr[3], eth_addr[4], eth_addr[5]);
+ if (eda_entry->state == WLP_WSS_UNCONNECTED) {
+ /* We don't want any more packets while we set up connection */
+ BUG_ON(wlp->stop_queue == NULL);
+ wlp->stop_queue(wlp);
+ conn_ctx = kmalloc(sizeof(*conn_ctx), GFP_ATOMIC);
+ if (conn_ctx == NULL) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to allocate memory "
+ "for connection handling.\n");
+ result = -ENOMEM;
+ goto out;
+ }
+ conn_ctx->wlp = wlp;
+ conn_ctx->skb = skb;
+ conn_ctx->eda_entry = *eda_entry;
+ INIT_WORK(&conn_ctx->ws, wlp_wss_connect_send);
+ schedule_work(&conn_ctx->ws);
+ result = 1;
+ } else if (eda_entry->state == WLP_WSS_CONNECT_FAILED) {
+ /* Previous connection attempts failed, don't retry - see
+ * conditions for connection in WLP 0.99 [7.6.2] */
+ if (printk_ratelimit())
+ dev_err(dev, "Could not connect to neighbor "
+ "previously. Not retrying. \n");
+ result = -ENONET;
+ goto out;
+ } else { /* eda_entry->state == WLP_WSS_CONNECTED */
+ d_printf(5, dev, "Neighbor is connected, preparing frame.\n");
+ result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
+ }
+out:
+ d_fnend(5, dev, "wlp %p, result = %d \n", wlp, result);
+ return result;
+}
+
+/**
+ * Emulate broadcast: copy skb, send copy to neighbor (connect if not already)
+ *
+ * We need to copy skbs in the case where we emulate broadcast through
+ * unicast. We copy instead of clone because we are modifying the data of
+ * the frame after copying ... clones share data so we cannot emulate
+ * broadcast using clones.
+ *
+ * run with eda->lock held (spinlock)
+ */
+int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry,
+ void *_skb)
+{
+ int result = -ENOMEM;
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ struct sk_buff *skb = _skb;
+ struct sk_buff *copy;
+ struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
+
+ d_fnstart(5, dev, "to neighbor %02x:%02x, skb (%p) \n",
+ dev_addr->data[1], dev_addr->data[0], skb);
+ copy = skb_copy(skb, GFP_ATOMIC);
+ if (copy == NULL) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to copy skb for "
+ "transmission.\n");
+ goto out;
+ }
+ result = wlp_wss_connect_prep(wlp, eda_entry, copy);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to connect/send skb "
+ "to neighbor.\n");
+ dev_kfree_skb_irq(copy);
+ goto out;
+ } else if (result == 1)
+ /* Frame will be transmitted separately */
+ goto out;
+ BUG_ON(wlp->xmit_frame == NULL);
+ result = wlp->xmit_frame(wlp, copy, dev_addr);
+ if (result < 0) {
+ if (printk_ratelimit())
+ dev_err(dev, "WLP: Unable to transmit frame: %d\n",
+ result);
+ if ((result == -ENXIO) && printk_ratelimit())
+ dev_err(dev, "WLP: Is network interface up? \n");
+ /* We could try again ... */
+ dev_kfree_skb_irq(copy);/*we need to free if tx fails */
+ }
+out:
+ d_fnend(5, dev, "to neighbor %02x:%02x \n", dev_addr->data[1],
+ dev_addr->data[0]);
+ return result;
+}
+
+
+/**
+ * Setup WSS
+ *
+ * Should be called by network driver after the interface has been given a
+ * MAC address.
+ */
+int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ int result = 0;
+ d_fnstart(5, dev, "wss (%p) \n", wss);
+ mutex_lock(&wss->mutex);
+ wss->kobj.parent = &net_dev->dev.kobj;
+ if (!is_valid_ether_addr(net_dev->dev_addr)) {
+ dev_err(dev, "WLP: Invalid MAC address. Cannot use for"
+ "virtual.\n");
+ result = -EINVAL;
+ goto out;
+ }
+ memcpy(wss->virtual_addr.data, net_dev->dev_addr,
+ sizeof(wss->virtual_addr.data));
+out:
+ mutex_unlock(&wss->mutex);
+ d_fnend(5, dev, "wss (%p) \n", wss);
+ return result;
+}
+EXPORT_SYMBOL_GPL(wlp_wss_setup);
+
+/**
+ * Remove WSS
+ *
+ * Called by client that configured WSS through wlp_wss_setup(). This
+ * function is called when client no longer needs WSS, eg. client shuts
+ * down.
+ *
+ * We remove the WLP IE from the beacon before initiating local cleanup.
+ */
+void wlp_wss_remove(struct wlp_wss *wss)
+{
+ struct wlp *wlp = container_of(wss, struct wlp, wss);
+ struct device *dev = &wlp->rc->uwb_dev.dev;
+ d_fnstart(5, dev, "wss (%p) \n", wss);
+ mutex_lock(&wss->mutex);
+ if (wss->state == WLP_WSS_STATE_ACTIVE)
+ uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP);
+ if (wss->state != WLP_WSS_STATE_NONE) {
+ sysfs_remove_group(&wss->kobj, &wss_attr_group);
+ kobject_put(&wss->kobj);
+ }
+ wss->kobj.parent = NULL;
+ memset(&wss->virtual_addr, 0, sizeof(wss->virtual_addr));
+ /* Cleanup EDA cache */
+ wlp_eda_release(&wlp->eda);
+ wlp_eda_init(&wlp->eda);
+ mutex_unlock(&wss->mutex);
+ d_fnend(5, dev, "wss (%p) \n", wss);
+}
+EXPORT_SYMBOL_GPL(wlp_wss_remove);
} else {
printk(KERN_ERR PFX "No W83697UG/UF could be found\n");
- return -EIO;
+ return;
}
outb_p(0x07, WDT_EFER); /* point to logical device number reg */
case EXT3_IOC_GROUP_EXTEND: {
ext3_fsblk_t n_blocks_count;
struct super_block *sb = inode->i_sb;
- int err;
+ int err, err2;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
}
err = ext3_group_extend(sb, EXT3_SB(sb)->s_es, n_blocks_count);
journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
+ err2 = journal_flush(EXT3_SB(sb)->s_journal);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ if (err == 0)
+ err = err2;
group_extend_out:
mnt_drop_write(filp->f_path.mnt);
return err;
case EXT3_IOC_GROUP_ADD: {
struct ext3_new_group_data input;
struct super_block *sb = inode->i_sb;
- int err;
+ int err, err2;
if (!capable(CAP_SYS_RESOURCE))
return -EPERM;
err = ext3_group_add(sb, &input);
journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
+ err2 = journal_flush(EXT3_SB(sb)->s_journal);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ if (err == 0)
+ err = err2;
group_add_out:
mnt_drop_write(filp->f_path.mnt);
return err;
int i;
ext3_xattr_put_super(sb);
- journal_destroy(sbi->s_journal);
+ if (journal_destroy(sbi->s_journal) < 0)
+ ext3_abort(sb, __func__, "Couldn't clean up the journal");
if (!(sb->s_flags & MS_RDONLY)) {
EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
es->s_state = cpu_to_le16(sbi->s_mount_state);
journal_t *journal = EXT3_SB(sb)->s_journal;
journal_lock_updates(journal);
- journal_flush(journal);
+ if (journal_flush(journal) < 0)
+ goto out;
+
lock_super(sb);
if (EXT3_HAS_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER) &&
sb->s_flags & MS_RDONLY) {
ext3_commit_super(sb, es, 1);
}
unlock_super(sb);
+
+out:
journal_unlock_updates(journal);
}
/* Now we set up the journal barrier. */
journal_lock_updates(journal);
- journal_flush(journal);
+
+ /*
+ * We don't want to clear needs_recovery flag when we failed
+ * to flush the journal.
+ */
+ if (journal_flush(journal) < 0)
+ return;
/* Journal blocked and flushed, clear needs_recovery flag. */
EXT3_CLEAR_INCOMPAT_FEATURE(sb, EXT3_FEATURE_INCOMPAT_RECOVER);
* otherwise be livelocked...
*/
journal_lock_updates(EXT3_SB(sb)->s_journal);
- journal_flush(EXT3_SB(sb)->s_journal);
+ err = journal_flush(EXT3_SB(sb)->s_journal);
journal_unlock_updates(EXT3_SB(sb)->s_journal);
+ if (err) {
+ path_put(&nd.path);
+ return err;
+ }
}
err = vfs_quota_on_path(sb, type, format_id, &nd.path);
int ret = 0;
struct buffer_head *bh = jh2bh(jh);
- if (jh->b_jlist == BJ_None && !buffer_locked(bh) && !buffer_dirty(bh)) {
+ if (jh->b_jlist == BJ_None && !buffer_locked(bh) &&
+ !buffer_dirty(bh) && !buffer_write_io_error(bh)) {
JBUFFER_TRACE(jh, "remove from checkpoint list");
ret = __journal_remove_checkpoint(jh) + 1;
jbd_unlock_bh_state(bh);
/*
* Test again, another process may have checkpointed while we
- * were waiting for the checkpoint lock
+ * were waiting for the checkpoint lock. If there are no
+ * outstanding transactions there is nothing to checkpoint and
+ * we can't make progress. Abort the journal in this case.
*/
spin_lock(&journal->j_state_lock);
+ spin_lock(&journal->j_list_lock);
nblocks = jbd_space_needed(journal);
if (__log_space_left(journal) < nblocks) {
+ int chkpt = journal->j_checkpoint_transactions != NULL;
+
+ spin_unlock(&journal->j_list_lock);
spin_unlock(&journal->j_state_lock);
- log_do_checkpoint(journal);
+ if (chkpt) {
+ log_do_checkpoint(journal);
+ } else {
+ printk(KERN_ERR "%s: no transactions\n",
+ __func__);
+ journal_abort(journal, 0);
+ }
+
spin_lock(&journal->j_state_lock);
+ } else {
+ spin_unlock(&journal->j_list_lock);
}
mutex_unlock(&journal->j_checkpoint_mutex);
}
* buffers. Note that we take the buffers in the opposite ordering
* from the one in which they were submitted for IO.
*
+ * Return 0 on success, and return <0 if some buffers have failed
+ * to be written out.
+ *
* Called with j_list_lock held.
*/
-static void __wait_cp_io(journal_t *journal, transaction_t *transaction)
+static int __wait_cp_io(journal_t *journal, transaction_t *transaction)
{
struct journal_head *jh;
struct buffer_head *bh;
tid_t this_tid;
int released = 0;
+ int ret = 0;
this_tid = transaction->t_tid;
restart:
/* Did somebody clean up the transaction in the meanwhile? */
if (journal->j_checkpoint_transactions != transaction ||
transaction->t_tid != this_tid)
- return;
+ return ret;
while (!released && transaction->t_checkpoint_io_list) {
jh = transaction->t_checkpoint_io_list;
bh = jh2bh(jh);
spin_lock(&journal->j_list_lock);
goto restart;
}
+ if (unlikely(buffer_write_io_error(bh)))
+ ret = -EIO;
+
/*
* Now in whatever state the buffer currently is, we know that
* it has been written out and so we can drop it from the list
journal_remove_journal_head(bh);
__brelse(bh);
}
+
+ return ret;
}
#define NR_BATCH 64
* Try to flush one buffer from the checkpoint list to disk.
*
* Return 1 if something happened which requires us to abort the current
- * scan of the checkpoint list.
+ * scan of the checkpoint list. Return <0 if the buffer has failed to
+ * be written out.
*
* Called with j_list_lock held and drops it if 1 is returned
* Called under jbd_lock_bh_state(jh2bh(jh)), and drops it
log_wait_commit(journal, tid);
ret = 1;
} else if (!buffer_dirty(bh)) {
+ ret = 1;
+ if (unlikely(buffer_write_io_error(bh)))
+ ret = -EIO;
J_ASSERT_JH(jh, !buffer_jbddirty(bh));
BUFFER_TRACE(bh, "remove from checkpoint");
__journal_remove_checkpoint(jh);
jbd_unlock_bh_state(bh);
journal_remove_journal_head(bh);
__brelse(bh);
- ret = 1;
} else {
/*
* Important: we are about to write the buffer, and
* to disk. We submit larger chunks of data at once.
*
* The journal should be locked before calling this function.
+ * Called with j_checkpoint_mutex held.
*/
int log_do_checkpoint(journal_t *journal)
{
* OK, we need to start writing disk blocks. Take one transaction
* and write it.
*/
+ result = 0;
spin_lock(&journal->j_list_lock);
if (!journal->j_checkpoint_transactions)
goto out;
int batch_count = 0;
struct buffer_head *bhs[NR_BATCH];
struct journal_head *jh;
- int retry = 0;
+ int retry = 0, err;
while (!retry && transaction->t_checkpoint_list) {
struct buffer_head *bh;
break;
}
retry = __process_buffer(journal, jh, bhs,&batch_count);
+ if (retry < 0 && !result)
+ result = retry;
if (!retry && (need_resched() ||
spin_needbreak(&journal->j_list_lock))) {
spin_unlock(&journal->j_list_lock);
* Now we have cleaned up the first transaction's checkpoint
* list. Let's clean up the second one
*/
- __wait_cp_io(journal, transaction);
+ err = __wait_cp_io(journal, transaction);
+ if (!result)
+ result = err;
}
out:
spin_unlock(&journal->j_list_lock);
- result = cleanup_journal_tail(journal);
if (result < 0)
- return result;
- return 0;
+ journal_abort(journal, result);
+ else
+ result = cleanup_journal_tail(journal);
+
+ return (result < 0) ? result : 0;
}
/*
* This is the only part of the journaling code which really needs to be
* aware of transaction aborts. Checkpointing involves writing to the
* main filesystem area rather than to the journal, so it can proceed
- * even in abort state, but we must not update the journal superblock if
- * we have an abort error outstanding.
+ * even in abort state, but we must not update the super block if
+ * checkpointing may have failed. Otherwise, we would lose some metadata
+ * buffers which should be written-back to the filesystem.
*/
int cleanup_journal_tail(journal_t *journal)
tid_t first_tid;
unsigned long blocknr, freed;
+ if (is_journal_aborted(journal))
+ return 1;
+
/* OK, work out the oldest transaction remaining in the log, and
* the log block it starts at.
*
*
* Release a journal_t structure once it is no longer in use by the
* journaled object.
+ * Return <0 if we couldn't clean up the journal.
*/
-void journal_destroy(journal_t *journal)
+int journal_destroy(journal_t *journal)
{
+ int err = 0;
+
/* Wait for the commit thread to wake up and die. */
journal_kill_thread(journal);
J_ASSERT(journal->j_checkpoint_transactions == NULL);
spin_unlock(&journal->j_list_lock);
- /* We can now mark the journal as empty. */
- journal->j_tail = 0;
- journal->j_tail_sequence = ++journal->j_transaction_sequence;
if (journal->j_sb_buffer) {
- journal_update_superblock(journal, 1);
+ if (!is_journal_aborted(journal)) {
+ /* We can now mark the journal as empty. */
+ journal->j_tail = 0;
+ journal->j_tail_sequence =
+ ++journal->j_transaction_sequence;
+ journal_update_superblock(journal, 1);
+ } else {
+ err = -EIO;
+ }
brelse(journal->j_sb_buffer);
}
journal_destroy_revoke(journal);
kfree(journal->j_wbuf);
kfree(journal);
+
+ return err;
}
spin_lock(&journal->j_list_lock);
while (!err && journal->j_checkpoint_transactions != NULL) {
spin_unlock(&journal->j_list_lock);
+ mutex_lock(&journal->j_checkpoint_mutex);
err = log_do_checkpoint(journal);
+ mutex_unlock(&journal->j_checkpoint_mutex);
spin_lock(&journal->j_list_lock);
}
spin_unlock(&journal->j_list_lock);
+
+ if (is_journal_aborted(journal))
+ return -EIO;
+
cleanup_journal_tail(journal);
/* Finally, mark the journal as really needing no recovery.
J_ASSERT(journal->j_head == journal->j_tail);
J_ASSERT(journal->j_tail_sequence == journal->j_transaction_sequence);
spin_unlock(&journal->j_state_lock);
- return err;
+ return 0;
}
/**
*/
int journal_recover(journal_t *journal)
{
- int err;
+ int err, err2;
journal_superblock_t * sb;
struct recovery_info info;
journal->j_transaction_sequence = ++info.end_transaction;
journal_clear_revoke(journal);
- sync_blockdev(journal->j_fs_dev);
+ err2 = sync_blockdev(journal->j_fs_dev);
+ if (!err)
+ err = err2;
+
return err;
}
{
if (unlikely(atomic_dec_return(count) < 0))
fail_fn(count);
- else
- smp_mb();
}
/**
{
if (unlikely(atomic_dec_return(count) < 0))
return fail_fn(count);
- else {
- smp_mb();
- return 0;
- }
+ return 0;
}
/**
static inline void
__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
- smp_mb();
if (unlikely(atomic_inc_return(count) <= 0))
fail_fn(count);
}
static inline int
__mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
{
- /*
- * We have two variants here. The cmpxchg based one is the best one
- * because it never induce a false contention state. It is included
- * here because architectures using the inc/dec algorithms over the
- * xchg ones are much more likely to support cmpxchg natively.
- *
- * If not we fall back to the spinlock based variant - that is
- * just as efficient (and simpler) as a 'destructive' probing of
- * the mutex state would be.
- */
-#ifdef __HAVE_ARCH_CMPXCHG
- if (likely(atomic_cmpxchg(count, 1, 0) == 1)) {
- smp_mb();
+ if (likely(atomic_cmpxchg(count, 1, 0) == 1))
return 1;
- }
return 0;
-#else
- return fail_fn(count);
-#endif
}
#endif
{
if (unlikely(atomic_xchg(count, 0) != 1))
fail_fn(count);
- else
- smp_mb();
}
/**
{
if (unlikely(atomic_xchg(count, 0) != 1))
return fail_fn(count);
- else {
- smp_mb();
- return 0;
- }
+ return 0;
}
/**
static inline void
__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
- smp_mb();
if (unlikely(atomic_xchg(count, 1) != 0))
fail_fn(count);
}
if (prev < 0)
prev = 0;
}
- smp_mb();
return prev;
}
extern int force_iommu, no_iommu;
extern int iommu_detected;
extern int dmar_disabled;
+extern int forbid_dac;
extern unsigned long iommu_nr_pages(unsigned long addr, unsigned long len);
+/* 10 seconds */
+#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
+
#ifdef CONFIG_GART_IOMMU
extern int gart_iommu_aperture;
extern int gart_iommu_aperture_allowed;
#include <linux/types.h>
-#define XCHAL_KIO_CACHED_VADDR 0xf0000000
-#define XCHAL_KIO_BYPASS_VADDR 0xf8000000
+#define XCHAL_KIO_CACHED_VADDR 0xe0000000
+#define XCHAL_KIO_BYPASS_VADDR 0xf0000000
#define XCHAL_KIO_PADDR 0xf0000000
-#define XCHAL_KIO_SIZE 0x08000000
+#define XCHAL_KIO_SIZE 0x10000000
+
+#define IOADDR(x) (XCHAL_KIO_BYPASS_VADDR + (x))
/*
* swap functions to change byte order from little-endian to big-endian and
#ifndef _XTENSA_RWSEM_H
#define _XTENSA_RWSEM_H
+#ifndef _LINUX_RWSEM_H
+#error "Please don't include <asm/rwsem.h> directly, use <linux/rwsem.h> instead."
+#endif
+
#include <linux/list.h>
#include <linux/spinlock.h>
#include <asm/atomic.h>
--- /dev/null
+/*
+ * Xtensa processor core configuration information.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_CONFIGURATION_H
+#define _XTENSA_CORE_CONFIGURATION_H
+
+
+/****************************************************************************
+ Parameters Useful for Any Code, USER or PRIVILEGED
+ ****************************************************************************/
+
+/*
+ * Note: Macros of the form XCHAL_HAVE_*** have a value of 1 if the option is
+ * configured, and a value of 0 otherwise. These macros are always defined.
+ */
+
+
+/*----------------------------------------------------------------------
+ ISA
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_BE 0 /* big-endian byte ordering */
+#define XCHAL_HAVE_WINDOWED 1 /* windowed registers option */
+#define XCHAL_NUM_AREGS 32 /* num of physical addr regs */
+#define XCHAL_NUM_AREGS_LOG2 5 /* log2(XCHAL_NUM_AREGS) */
+#define XCHAL_MAX_INSTRUCTION_SIZE 3 /* max instr bytes (3..8) */
+#define XCHAL_HAVE_DEBUG 1 /* debug option */
+#define XCHAL_HAVE_DENSITY 1 /* 16-bit instructions */
+#define XCHAL_HAVE_LOOPS 1 /* zero-overhead loops */
+#define XCHAL_HAVE_NSA 1 /* NSA/NSAU instructions */
+#define XCHAL_HAVE_MINMAX 1 /* MIN/MAX instructions */
+#define XCHAL_HAVE_SEXT 1 /* SEXT instruction */
+#define XCHAL_HAVE_CLAMPS 1 /* CLAMPS instruction */
+#define XCHAL_HAVE_MUL16 1 /* MUL16S/MUL16U instructions */
+#define XCHAL_HAVE_MUL32 1 /* MULL instruction */
+#define XCHAL_HAVE_MUL32_HIGH 0 /* MULUH/MULSH instructions */
+#define XCHAL_HAVE_DIV32 1 /* QUOS/QUOU/REMS/REMU instructions */
+#define XCHAL_HAVE_L32R 1 /* L32R instruction */
+#define XCHAL_HAVE_ABSOLUTE_LITERALS 1 /* non-PC-rel (extended) L32R */
+#define XCHAL_HAVE_CONST16 0 /* CONST16 instruction */
+#define XCHAL_HAVE_ADDX 1 /* ADDX#/SUBX# instructions */
+#define XCHAL_HAVE_WIDE_BRANCHES 0 /* B*.W18 or B*.W15 instr's */
+#define XCHAL_HAVE_PREDICTED_BRANCHES 0 /* B[EQ/EQZ/NE/NEZ]T instr's */
+#define XCHAL_HAVE_CALL4AND12 1 /* (obsolete option) */
+#define XCHAL_HAVE_ABS 1 /* ABS instruction */
+/*#define XCHAL_HAVE_POPC 0*/ /* POPC instruction */
+/*#define XCHAL_HAVE_CRC 0*/ /* CRC instruction */
+#define XCHAL_HAVE_RELEASE_SYNC 1 /* L32AI/S32RI instructions */
+#define XCHAL_HAVE_S32C1I 1 /* S32C1I instruction */
+#define XCHAL_HAVE_SPECULATION 0 /* speculation */
+#define XCHAL_HAVE_FULL_RESET 1 /* all regs/state reset */
+#define XCHAL_NUM_CONTEXTS 1 /* */
+#define XCHAL_NUM_MISC_REGS 2 /* num of scratch regs (0..4) */
+#define XCHAL_HAVE_TAP_MASTER 0 /* JTAG TAP control instr's */
+#define XCHAL_HAVE_PRID 1 /* processor ID register */
+#define XCHAL_HAVE_THREADPTR 1 /* THREADPTR register */
+#define XCHAL_HAVE_BOOLEANS 0 /* boolean registers */
+#define XCHAL_HAVE_CP 1 /* CPENABLE reg (coprocessor) */
+#define XCHAL_CP_MAXCFG 8 /* max allowed cp id plus one */
+#define XCHAL_HAVE_MAC16 1 /* MAC16 package */
+#define XCHAL_HAVE_VECTORFPU2005 0 /* vector floating-point pkg */
+#define XCHAL_HAVE_FP 0 /* floating point pkg */
+#define XCHAL_HAVE_VECTRA1 0 /* Vectra I pkg */
+#define XCHAL_HAVE_VECTRALX 0 /* Vectra LX pkg */
+#define XCHAL_HAVE_HIFI2 0 /* HiFi2 Audio Engine pkg */
+
+
+/*----------------------------------------------------------------------
+ MISC
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_WRITEBUFFER_ENTRIES 8 /* size of write buffer */
+#define XCHAL_INST_FETCH_WIDTH 4 /* instr-fetch width in bytes */
+#define XCHAL_DATA_WIDTH 4 /* data width in bytes */
+/* In T1050, applies to selected core load and store instructions (see ISA): */
+#define XCHAL_UNALIGNED_LOAD_EXCEPTION 1 /* unaligned loads cause exc. */
+#define XCHAL_UNALIGNED_STORE_EXCEPTION 1 /* unaligned stores cause exc.*/
+
+#define XCHAL_SW_VERSION 701001 /* sw version of this header */
+
+#define XCHAL_CORE_ID "dc232b" /* alphanum core name
+ (CoreID) set in the Xtensa
+ Processor Generator */
+
+#define XCHAL_CORE_DESCRIPTION "Diamond 232L Standard Core Rev.B (LE)"
+#define XCHAL_BUILD_UNIQUE_ID 0x0000BEEF /* 22-bit sw build ID */
+
+/*
+ * These definitions describe the hardware targeted by this software.
+ */
+#define XCHAL_HW_CONFIGID0 0xC56307FE /* ConfigID hi 32 bits*/
+#define XCHAL_HW_CONFIGID1 0x0D40BEEF /* ConfigID lo 32 bits*/
+#define XCHAL_HW_VERSION_NAME "LX2.1.1" /* full version name */
+#define XCHAL_HW_VERSION_MAJOR 2210 /* major ver# of targeted hw */
+#define XCHAL_HW_VERSION_MINOR 1 /* minor ver# of targeted hw */
+#define XCHAL_HW_VERSION 221001 /* major*100+minor */
+#define XCHAL_HW_REL_LX2 1
+#define XCHAL_HW_REL_LX2_1 1
+#define XCHAL_HW_REL_LX2_1_1 1
+#define XCHAL_HW_CONFIGID_RELIABLE 1
+/* If software targets a *range* of hardware versions, these are the bounds: */
+#define XCHAL_HW_MIN_VERSION_MAJOR 2210 /* major v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION_MINOR 1 /* minor v of earliest tgt hw */
+#define XCHAL_HW_MIN_VERSION 221001 /* earliest targeted hw */
+#define XCHAL_HW_MAX_VERSION_MAJOR 2210 /* major v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION_MINOR 1 /* minor v of latest tgt hw */
+#define XCHAL_HW_MAX_VERSION 221001 /* latest targeted hw */
+
+
+/*----------------------------------------------------------------------
+ CACHE
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_ICACHE_LINESIZE 32 /* I-cache line size in bytes */
+#define XCHAL_DCACHE_LINESIZE 32 /* D-cache line size in bytes */
+#define XCHAL_ICACHE_LINEWIDTH 5 /* log2(I line size in bytes) */
+#define XCHAL_DCACHE_LINEWIDTH 5 /* log2(D line size in bytes) */
+
+#define XCHAL_ICACHE_SIZE 16384 /* I-cache size in bytes or 0 */
+#define XCHAL_DCACHE_SIZE 16384 /* D-cache size in bytes or 0 */
+
+#define XCHAL_DCACHE_IS_WRITEBACK 1 /* writeback feature */
+
+
+
+
+/****************************************************************************
+ Parameters Useful for PRIVILEGED (Supervisory or Non-Virtualized) Code
+ ****************************************************************************/
+
+
+#ifndef XTENSA_HAL_NON_PRIVILEGED_ONLY
+
+/*----------------------------------------------------------------------
+ CACHE
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_PIF 1 /* any outbound PIF present */
+
+/* If present, cache size in bytes == (ways * 2^(linewidth + setwidth)). */
+
+/* Number of cache sets in log2(lines per way): */
+#define XCHAL_ICACHE_SETWIDTH 7
+#define XCHAL_DCACHE_SETWIDTH 7
+
+/* Cache set associativity (number of ways): */
+#define XCHAL_ICACHE_WAYS 4
+#define XCHAL_DCACHE_WAYS 4
+
+/* Cache features: */
+#define XCHAL_ICACHE_LINE_LOCKABLE 1
+#define XCHAL_DCACHE_LINE_LOCKABLE 1
+#define XCHAL_ICACHE_ECC_PARITY 0
+#define XCHAL_DCACHE_ECC_PARITY 0
+
+/* Number of encoded cache attr bits (see <xtensa/hal.h> for decoded bits): */
+#define XCHAL_CA_BITS 4
+
+
+/*----------------------------------------------------------------------
+ INTERNAL I/D RAM/ROMs and XLMI
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_NUM_INSTROM 0 /* number of core instr. ROMs */
+#define XCHAL_NUM_INSTRAM 0 /* number of core instr. RAMs */
+#define XCHAL_NUM_DATAROM 0 /* number of core data ROMs */
+#define XCHAL_NUM_DATARAM 0 /* number of core data RAMs */
+#define XCHAL_NUM_URAM 0 /* number of core unified RAMs*/
+#define XCHAL_NUM_XLMI 0 /* number of core XLMI ports */
+
+
+/*----------------------------------------------------------------------
+ INTERRUPTS and TIMERS
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_INTERRUPTS 1 /* interrupt option */
+#define XCHAL_HAVE_HIGHPRI_INTERRUPTS 1 /* med/high-pri. interrupts */
+#define XCHAL_HAVE_NMI 1 /* non-maskable interrupt */
+#define XCHAL_HAVE_CCOUNT 1 /* CCOUNT reg. (timer option) */
+#define XCHAL_NUM_TIMERS 3 /* number of CCOMPAREn regs */
+#define XCHAL_NUM_INTERRUPTS 22 /* number of interrupts */
+#define XCHAL_NUM_INTERRUPTS_LOG2 5 /* ceil(log2(NUM_INTERRUPTS)) */
+#define XCHAL_NUM_EXTINTERRUPTS 17 /* num of external interrupts */
+#define XCHAL_NUM_INTLEVELS 6 /* number of interrupt levels
+ (not including level zero) */
+#define XCHAL_EXCM_LEVEL 3 /* level masked by PS.EXCM */
+ /* (always 1 in XEA1; levels 2 .. EXCM_LEVEL are "medium priority") */
+
+/* Masks of interrupts at each interrupt level: */
+#define XCHAL_INTLEVEL1_MASK 0x001F80FF
+#define XCHAL_INTLEVEL2_MASK 0x00000100
+#define XCHAL_INTLEVEL3_MASK 0x00200E00
+#define XCHAL_INTLEVEL4_MASK 0x00001000
+#define XCHAL_INTLEVEL5_MASK 0x00002000
+#define XCHAL_INTLEVEL6_MASK 0x00000000
+#define XCHAL_INTLEVEL7_MASK 0x00004000
+
+/* Masks of interrupts at each range 1..n of interrupt levels: */
+#define XCHAL_INTLEVEL1_ANDBELOW_MASK 0x001F80FF
+#define XCHAL_INTLEVEL2_ANDBELOW_MASK 0x001F81FF
+#define XCHAL_INTLEVEL3_ANDBELOW_MASK 0x003F8FFF
+#define XCHAL_INTLEVEL4_ANDBELOW_MASK 0x003F9FFF
+#define XCHAL_INTLEVEL5_ANDBELOW_MASK 0x003FBFFF
+#define XCHAL_INTLEVEL6_ANDBELOW_MASK 0x003FBFFF
+#define XCHAL_INTLEVEL7_ANDBELOW_MASK 0x003FFFFF
+
+/* Level of each interrupt: */
+#define XCHAL_INT0_LEVEL 1
+#define XCHAL_INT1_LEVEL 1
+#define XCHAL_INT2_LEVEL 1
+#define XCHAL_INT3_LEVEL 1
+#define XCHAL_INT4_LEVEL 1
+#define XCHAL_INT5_LEVEL 1
+#define XCHAL_INT6_LEVEL 1
+#define XCHAL_INT7_LEVEL 1
+#define XCHAL_INT8_LEVEL 2
+#define XCHAL_INT9_LEVEL 3
+#define XCHAL_INT10_LEVEL 3
+#define XCHAL_INT11_LEVEL 3
+#define XCHAL_INT12_LEVEL 4
+#define XCHAL_INT13_LEVEL 5
+#define XCHAL_INT14_LEVEL 7
+#define XCHAL_INT15_LEVEL 1
+#define XCHAL_INT16_LEVEL 1
+#define XCHAL_INT17_LEVEL 1
+#define XCHAL_INT18_LEVEL 1
+#define XCHAL_INT19_LEVEL 1
+#define XCHAL_INT20_LEVEL 1
+#define XCHAL_INT21_LEVEL 3
+#define XCHAL_DEBUGLEVEL 6 /* debug interrupt level */
+#define XCHAL_HAVE_DEBUG_EXTERN_INT 1 /* OCD external db interrupt */
+#define XCHAL_NMILEVEL 7 /* NMI "level" (for use with
+ EXCSAVE/EPS/EPC_n, RFI n) */
+
+/* Type of each interrupt: */
+#define XCHAL_INT0_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT1_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT2_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT3_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT4_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT5_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT6_TYPE XTHAL_INTTYPE_TIMER
+#define XCHAL_INT7_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT8_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT9_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT10_TYPE XTHAL_INTTYPE_TIMER
+#define XCHAL_INT11_TYPE XTHAL_INTTYPE_SOFTWARE
+#define XCHAL_INT12_TYPE XTHAL_INTTYPE_EXTERN_LEVEL
+#define XCHAL_INT13_TYPE XTHAL_INTTYPE_TIMER
+#define XCHAL_INT14_TYPE XTHAL_INTTYPE_NMI
+#define XCHAL_INT15_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT16_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT17_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT18_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT19_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT20_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+#define XCHAL_INT21_TYPE XTHAL_INTTYPE_EXTERN_EDGE
+
+/* Masks of interrupts for each type of interrupt: */
+#define XCHAL_INTTYPE_MASK_UNCONFIGURED 0xFFC00000
+#define XCHAL_INTTYPE_MASK_SOFTWARE 0x00000880
+#define XCHAL_INTTYPE_MASK_EXTERN_EDGE 0x003F8000
+#define XCHAL_INTTYPE_MASK_EXTERN_LEVEL 0x0000133F
+#define XCHAL_INTTYPE_MASK_TIMER 0x00002440
+#define XCHAL_INTTYPE_MASK_NMI 0x00004000
+#define XCHAL_INTTYPE_MASK_WRITE_ERROR 0x00000000
+
+/* Interrupt numbers assigned to specific interrupt sources: */
+#define XCHAL_TIMER0_INTERRUPT 6 /* CCOMPARE0 */
+#define XCHAL_TIMER1_INTERRUPT 10 /* CCOMPARE1 */
+#define XCHAL_TIMER2_INTERRUPT 13 /* CCOMPARE2 */
+#define XCHAL_TIMER3_INTERRUPT XTHAL_TIMER_UNCONFIGURED
+#define XCHAL_NMI_INTERRUPT 14 /* non-maskable interrupt */
+
+/* Interrupt numbers for levels at which only one interrupt is configured: */
+#define XCHAL_INTLEVEL2_NUM 8
+#define XCHAL_INTLEVEL4_NUM 12
+#define XCHAL_INTLEVEL5_NUM 13
+#define XCHAL_INTLEVEL7_NUM 14
+/* (There are many interrupts each at level(s) 1, 3.) */
+
+
+/*
+ * External interrupt vectors/levels.
+ * These macros describe how Xtensa processor interrupt numbers
+ * (as numbered internally, eg. in INTERRUPT and INTENABLE registers)
+ * map to external BInterrupt<n> pins, for those interrupts
+ * configured as external (level-triggered, edge-triggered, or NMI).
+ * See the Xtensa processor databook for more details.
+ */
+
+/* Core interrupt numbers mapped to each EXTERNAL interrupt number: */
+#define XCHAL_EXTINT0_NUM 0 /* (intlevel 1) */
+#define XCHAL_EXTINT1_NUM 1 /* (intlevel 1) */
+#define XCHAL_EXTINT2_NUM 2 /* (intlevel 1) */
+#define XCHAL_EXTINT3_NUM 3 /* (intlevel 1) */
+#define XCHAL_EXTINT4_NUM 4 /* (intlevel 1) */
+#define XCHAL_EXTINT5_NUM 5 /* (intlevel 1) */
+#define XCHAL_EXTINT6_NUM 8 /* (intlevel 2) */
+#define XCHAL_EXTINT7_NUM 9 /* (intlevel 3) */
+#define XCHAL_EXTINT8_NUM 12 /* (intlevel 4) */
+#define XCHAL_EXTINT9_NUM 14 /* (intlevel 7) */
+#define XCHAL_EXTINT10_NUM 15 /* (intlevel 1) */
+#define XCHAL_EXTINT11_NUM 16 /* (intlevel 1) */
+#define XCHAL_EXTINT12_NUM 17 /* (intlevel 1) */
+#define XCHAL_EXTINT13_NUM 18 /* (intlevel 1) */
+#define XCHAL_EXTINT14_NUM 19 /* (intlevel 1) */
+#define XCHAL_EXTINT15_NUM 20 /* (intlevel 1) */
+#define XCHAL_EXTINT16_NUM 21 /* (intlevel 3) */
+
+
+/*----------------------------------------------------------------------
+ EXCEPTIONS and VECTORS
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_XEA_VERSION 2 /* Xtensa Exception Architecture
+ number: 1 == XEA1 (old)
+ 2 == XEA2 (new)
+ 0 == XEAX (extern) */
+#define XCHAL_HAVE_XEA1 0 /* Exception Architecture 1 */
+#define XCHAL_HAVE_XEA2 1 /* Exception Architecture 2 */
+#define XCHAL_HAVE_XEAX 0 /* External Exception Arch. */
+#define XCHAL_HAVE_EXCEPTIONS 1 /* exception option */
+#define XCHAL_HAVE_MEM_ECC_PARITY 0 /* local memory ECC/parity */
+#define XCHAL_HAVE_VECTOR_SELECT 1 /* relocatable vectors */
+#define XCHAL_HAVE_VECBASE 1 /* relocatable vectors */
+#define XCHAL_VECBASE_RESET_VADDR 0xD0000000 /* VECBASE reset value */
+#define XCHAL_VECBASE_RESET_PADDR 0x00000000
+#define XCHAL_RESET_VECBASE_OVERLAP 0
+
+#define XCHAL_RESET_VECTOR0_VADDR 0xFE000000
+#define XCHAL_RESET_VECTOR0_PADDR 0xFE000000
+#define XCHAL_RESET_VECTOR1_VADDR 0xD8000500
+#define XCHAL_RESET_VECTOR1_PADDR 0x00000500
+#define XCHAL_RESET_VECTOR_VADDR 0xFE000000
+#define XCHAL_RESET_VECTOR_PADDR 0xFE000000
+#define XCHAL_USER_VECOFS 0x00000340
+#define XCHAL_USER_VECTOR_VADDR 0xD0000340
+#define XCHAL_USER_VECTOR_PADDR 0x00000340
+#define XCHAL_KERNEL_VECOFS 0x00000300
+#define XCHAL_KERNEL_VECTOR_VADDR 0xD0000300
+#define XCHAL_KERNEL_VECTOR_PADDR 0x00000300
+#define XCHAL_DOUBLEEXC_VECOFS 0x000003C0
+#define XCHAL_DOUBLEEXC_VECTOR_VADDR 0xD00003C0
+#define XCHAL_DOUBLEEXC_VECTOR_PADDR 0x000003C0
+#define XCHAL_WINDOW_OF4_VECOFS 0x00000000
+#define XCHAL_WINDOW_UF4_VECOFS 0x00000040
+#define XCHAL_WINDOW_OF8_VECOFS 0x00000080
+#define XCHAL_WINDOW_UF8_VECOFS 0x000000C0
+#define XCHAL_WINDOW_OF12_VECOFS 0x00000100
+#define XCHAL_WINDOW_UF12_VECOFS 0x00000140
+#define XCHAL_WINDOW_VECTORS_VADDR 0xD0000000
+#define XCHAL_WINDOW_VECTORS_PADDR 0x00000000
+#define XCHAL_INTLEVEL2_VECOFS 0x00000180
+#define XCHAL_INTLEVEL2_VECTOR_VADDR 0xD0000180
+#define XCHAL_INTLEVEL2_VECTOR_PADDR 0x00000180
+#define XCHAL_INTLEVEL3_VECOFS 0x000001C0
+#define XCHAL_INTLEVEL3_VECTOR_VADDR 0xD00001C0
+#define XCHAL_INTLEVEL3_VECTOR_PADDR 0x000001C0
+#define XCHAL_INTLEVEL4_VECOFS 0x00000200
+#define XCHAL_INTLEVEL4_VECTOR_VADDR 0xD0000200
+#define XCHAL_INTLEVEL4_VECTOR_PADDR 0x00000200
+#define XCHAL_INTLEVEL5_VECOFS 0x00000240
+#define XCHAL_INTLEVEL5_VECTOR_VADDR 0xD0000240
+#define XCHAL_INTLEVEL5_VECTOR_PADDR 0x00000240
+#define XCHAL_INTLEVEL6_VECOFS 0x00000280
+#define XCHAL_INTLEVEL6_VECTOR_VADDR 0xD0000280
+#define XCHAL_INTLEVEL6_VECTOR_PADDR 0x00000280
+#define XCHAL_DEBUG_VECOFS XCHAL_INTLEVEL6_VECOFS
+#define XCHAL_DEBUG_VECTOR_VADDR XCHAL_INTLEVEL6_VECTOR_VADDR
+#define XCHAL_DEBUG_VECTOR_PADDR XCHAL_INTLEVEL6_VECTOR_PADDR
+#define XCHAL_NMI_VECOFS 0x000002C0
+#define XCHAL_NMI_VECTOR_VADDR 0xD00002C0
+#define XCHAL_NMI_VECTOR_PADDR 0x000002C0
+#define XCHAL_INTLEVEL7_VECOFS XCHAL_NMI_VECOFS
+#define XCHAL_INTLEVEL7_VECTOR_VADDR XCHAL_NMI_VECTOR_VADDR
+#define XCHAL_INTLEVEL7_VECTOR_PADDR XCHAL_NMI_VECTOR_PADDR
+
+
+/*----------------------------------------------------------------------
+ DEBUG
+ ----------------------------------------------------------------------*/
+
+#define XCHAL_HAVE_OCD 1 /* OnChipDebug option */
+#define XCHAL_NUM_IBREAK 2 /* number of IBREAKn regs */
+#define XCHAL_NUM_DBREAK 2 /* number of DBREAKn regs */
+#define XCHAL_HAVE_OCD_DIR_ARRAY 1 /* faster OCD option */
+
+
+/*----------------------------------------------------------------------
+ MMU
+ ----------------------------------------------------------------------*/
+
+/* See core-matmap.h header file for more details. */
+
+#define XCHAL_HAVE_TLBS 1 /* inverse of HAVE_CACHEATTR */
+#define XCHAL_HAVE_SPANNING_WAY 0 /* one way maps I+D 4GB vaddr */
+#define XCHAL_HAVE_IDENTITY_MAP 0 /* vaddr == paddr always */
+#define XCHAL_HAVE_CACHEATTR 0 /* CACHEATTR register present */
+#define XCHAL_HAVE_MIMIC_CACHEATTR 0 /* region protection */
+#define XCHAL_HAVE_XLT_CACHEATTR 0 /* region prot. w/translation */
+#define XCHAL_HAVE_PTP_MMU 1 /* full MMU (with page table
+ [autorefill] and protection)
+ usable for an MMU-based OS */
+/* If none of the above last 4 are set, it's a custom TLB configuration. */
+#define XCHAL_ITLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
+#define XCHAL_DTLB_ARF_ENTRIES_LOG2 2 /* log2(autorefill way size) */
+
+#define XCHAL_MMU_ASID_BITS 8 /* number of bits in ASIDs */
+#define XCHAL_MMU_RINGS 4 /* number of rings (1..4) */
+#define XCHAL_MMU_RING_BITS 2 /* num of bits in RING field */
+
+#endif /* !XTENSA_HAL_NON_PRIVILEGED_ONLY */
+
+
+#endif /* _XTENSA_CORE_CONFIGURATION_H */
+
--- /dev/null
+/*
+ * This header file contains assembly-language definitions (assembly
+ * macros, etc.) for this specific Xtensa processor's TIE extensions
+ * and options. It is customized to this Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_ASM_H
+#define _XTENSA_CORE_TIE_ASM_H
+
+/* Selection parameter values for save-area save/restore macros: */
+/* Option vs. TIE: */
+#define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */
+#define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */
+/* Whether used automatically by compiler: */
+#define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */
+#define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */
+/* ABI handling across function calls: */
+#define XTHAL_SAS_CALR 0x0010 /* caller-saved */
+#define XTHAL_SAS_CALE 0x0020 /* callee-saved */
+#define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */
+/* Misc */
+#define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */
+
+
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered): ptr (1 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+ .macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-8, 4, 4
+ rsr \at1, ACCLO // MAC16 accumulator
+ rsr \at2, ACCHI
+ s32i \at1, \ptr, .Lxchal_ofs_ + 0
+ s32i \at2, \ptr, .Lxchal_ofs_ + 4
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-16, 4, 4
+ rsr \at1, M0 // MAC16 registers
+ rsr \at2, M1
+ s32i \at1, \ptr, .Lxchal_ofs_ + 0
+ s32i \at2, \ptr, .Lxchal_ofs_ + 4
+ rsr \at1, M2
+ rsr \at2, M3
+ s32i \at1, \ptr, .Lxchal_ofs_ + 8
+ s32i \at2, \ptr, .Lxchal_ofs_ + 12
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 16
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ rsr \at1, SCOMPARE1 // conditional store option
+ s32i \at1, \ptr, .Lxchal_ofs_ + 0
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ rur \at1, THREADPTR // threadptr option
+ s32i \at1, \ptr, .Lxchal_ofs_ + 0
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .endm // xchal_ncp_store
+
+/* Macro to save all non-coprocessor (extra) custom TIE and optional state
+ * (not including zero-overhead loop registers).
+ * Save area ptr (clobbered): ptr (1 byte aligned)
+ * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed)
+ */
+ .macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL
+ xchal_sa_start \continue, \ofs
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-8, 4, 4
+ l32i \at1, \ptr, .Lxchal_ofs_ + 0
+ l32i \at2, \ptr, .Lxchal_ofs_ + 4
+ wsr \at1, ACCLO // MAC16 accumulator
+ wsr \at2, ACCHI
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 8
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-16, 4, 4
+ l32i \at1, \ptr, .Lxchal_ofs_ + 0
+ l32i \at2, \ptr, .Lxchal_ofs_ + 4
+ wsr \at1, M0 // MAC16 registers
+ wsr \at2, M1
+ l32i \at1, \ptr, .Lxchal_ofs_ + 8
+ l32i \at2, \ptr, .Lxchal_ofs_ + 12
+ wsr \at1, M2
+ wsr \at2, M3
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 16
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ l32i \at1, \ptr, .Lxchal_ofs_ + 0
+ wsr \at1, SCOMPARE1 // conditional store option
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_CC | XTHAL_SAS_GLOB) & ~\select
+ xchal_sa_align \ptr, 0, 1024-4, 4, 4
+ l32i \at1, \ptr, .Lxchal_ofs_ + 0
+ wur \at1, THREADPTR // threadptr option
+ .set .Lxchal_ofs_, .Lxchal_ofs_ + 4
+ .endif
+ .endm // xchal_ncp_load
+
+
+
+#define XCHAL_NCP_NUM_ATMPS 2
+
+
+#define XCHAL_SA_NUM_ATMPS 2
+
+#endif /*_XTENSA_CORE_TIE_ASM_H*/
+
--- /dev/null
+/*
+ * This header file describes this specific Xtensa processor's TIE extensions
+ * that extend basic Xtensa core functionality. It is customized to this
+ * Xtensa processor configuration.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1999-2007 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_CORE_TIE_H
+#define _XTENSA_CORE_TIE_H
+
+#define XCHAL_CP_NUM 1 /* number of coprocessors */
+#define XCHAL_CP_MAX 8 /* max CP ID + 1 (0 if none) */
+#define XCHAL_CP_MASK 0x80 /* bitmask of all CPs by ID */
+#define XCHAL_CP_PORT_MASK 0x80 /* bitmask of only port CPs */
+
+/* Basic parameters of each coprocessor: */
+#define XCHAL_CP7_NAME "XTIOP"
+#define XCHAL_CP7_IDENT XTIOP
+#define XCHAL_CP7_SA_SIZE 0 /* size of state save area */
+#define XCHAL_CP7_SA_ALIGN 1 /* min alignment of save area */
+#define XCHAL_CP_ID_XTIOP 7 /* coprocessor ID (0..7) */
+
+/* Filler info for unassigned coprocessors, to simplify arrays etc: */
+#define XCHAL_CP0_SA_SIZE 0
+#define XCHAL_CP0_SA_ALIGN 1
+#define XCHAL_CP1_SA_SIZE 0
+#define XCHAL_CP1_SA_ALIGN 1
+#define XCHAL_CP2_SA_SIZE 0
+#define XCHAL_CP2_SA_ALIGN 1
+#define XCHAL_CP3_SA_SIZE 0
+#define XCHAL_CP3_SA_ALIGN 1
+#define XCHAL_CP4_SA_SIZE 0
+#define XCHAL_CP4_SA_ALIGN 1
+#define XCHAL_CP5_SA_SIZE 0
+#define XCHAL_CP5_SA_ALIGN 1
+#define XCHAL_CP6_SA_SIZE 0
+#define XCHAL_CP6_SA_ALIGN 1
+
+/* Save area for non-coprocessor optional and custom (TIE) state: */
+#define XCHAL_NCP_SA_SIZE 32
+#define XCHAL_NCP_SA_ALIGN 4
+
+/* Total save area for optional and custom state (NCP + CPn): */
+#define XCHAL_TOTAL_SA_SIZE 32 /* with 16-byte align padding */
+#define XCHAL_TOTAL_SA_ALIGN 4 /* actual minimum alignment */
+
+/*
+ * Detailed contents of save areas.
+ * NOTE: caller must define the XCHAL_SA_REG macro (not defined here)
+ * before expanding the XCHAL_xxx_SA_LIST() macros.
+ *
+ * XCHAL_SA_REG(s,ccused,abikind,kind,opt,name,galign,align,asize,
+ * dbnum,base,regnum,bitsz,gapsz,reset,x...)
+ *
+ * s = passed from XCHAL_*_LIST(s), eg. to select how to expand
+ * ccused = set if used by compiler without special options or code
+ * abikind = 0 (caller-saved), 1 (callee-saved), or 2 (thread-global)
+ * kind = 0 (special reg), 1 (TIE user reg), or 2 (TIE regfile reg)
+ * opt = 0 (custom TIE extension or coprocessor), or 1 (optional reg)
+ * name = lowercase reg name (no quotes)
+ * galign = group byte alignment (power of 2) (galign >= align)
+ * align = register byte alignment (power of 2)
+ * asize = allocated size in bytes (asize*8 == bitsz + gapsz + padsz)
+ * (not including any pad bytes required to galign this or next reg)
+ * dbnum = unique target number f/debug (see <xtensa-libdb-macros.h>)
+ * base = reg shortname w/o index (or sr=special, ur=TIE user reg)
+ * regnum = reg index in regfile, or special/TIE-user reg number
+ * bitsz = number of significant bits (regfile width, or ur/sr mask bits)
+ * gapsz = intervening bits, if bitsz bits not stored contiguously
+ * (padsz = pad bits at end [TIE regfile] or at msbits [ur,sr] of asize)
+ * reset = register reset value (or 0 if undefined at reset)
+ * x = reserved for future use (0 until then)
+ *
+ * To filter out certain registers, e.g. to expand only the non-global
+ * registers used by the compiler, you can do something like this:
+ *
+ * #define XCHAL_SA_REG(s,ccused,p...) SELCC##ccused(p)
+ * #define SELCC0(p...)
+ * #define SELCC1(abikind,p...) SELAK##abikind(p)
+ * #define SELAK0(p...) REG(p)
+ * #define SELAK1(p...) REG(p)
+ * #define SELAK2(p...)
+ * #define REG(kind,tie,name,galn,aln,asz,csz,dbnum,base,rnum,bsz,rst,x...) \
+ * ...what you want to expand...
+ */
+
+#define XCHAL_NCP_SA_NUM 8
+#define XCHAL_NCP_SA_LIST(s) \
+ XCHAL_SA_REG(s,1,0,0,1, acclo, 4, 4, 4,0x0210, sr,16 , 32,0,0,0) \
+ XCHAL_SA_REG(s,1,0,0,1, acchi, 4, 4, 4,0x0211, sr,17 , 8,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1, m0, 4, 4, 4,0x0220, sr,32 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1, m1, 4, 4, 4,0x0221, sr,33 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1, m2, 4, 4, 4,0x0222, sr,34 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1, m3, 4, 4, 4,0x0223, sr,35 , 32,0,0,0) \
+ XCHAL_SA_REG(s,0,0,0,1, scompare1, 4, 4, 4,0x020C, sr,12 , 32,0,0,0) \
+ XCHAL_SA_REG(s,1,2,1,1, threadptr, 4, 4, 4,0x03E7, ur,231, 32,0,0,0)
+
+#define XCHAL_CP0_SA_NUM 0
+#define XCHAL_CP0_SA_LIST(s) /* empty */
+
+#define XCHAL_CP1_SA_NUM 0
+#define XCHAL_CP1_SA_LIST(s) /* empty */
+
+#define XCHAL_CP2_SA_NUM 0
+#define XCHAL_CP2_SA_LIST(s) /* empty */
+
+#define XCHAL_CP3_SA_NUM 0
+#define XCHAL_CP3_SA_LIST(s) /* empty */
+
+#define XCHAL_CP4_SA_NUM 0
+#define XCHAL_CP4_SA_LIST(s) /* empty */
+
+#define XCHAL_CP5_SA_NUM 0
+#define XCHAL_CP5_SA_LIST(s) /* empty */
+
+#define XCHAL_CP6_SA_NUM 0
+#define XCHAL_CP6_SA_LIST(s) /* empty */
+
+#define XCHAL_CP7_SA_NUM 0
+#define XCHAL_CP7_SA_LIST(s) /* empty */
+
+/* Byte length of instruction from its first nibble (op0 field), per FLIX. */
+#define XCHAL_OP0_FORMAT_LENGTHS 3,3,3,3,3,3,3,3,2,2,2,2,2,2,3,3
+
+#endif /*_XTENSA_CORE_TIE_H*/
+
extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order);
extern void bitmap_release_region(unsigned long *bitmap, int pos, int order);
extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order);
+extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits);
#define BITMAP_LAST_WORD_MASK(nbits) \
( \
*/
#define dm_round_up(n, sz) (dm_div_up((n), (sz)) * (sz))
+#define dm_array_too_big(fixed, obj, num) \
+ ((num) > (UINT_MAX - (fixed)) / (obj))
+
static inline sector_t to_sector(unsigned long n)
{
return (n >> SECTOR_SHIFT);
--- /dev/null
+/*
+ * Copyright (C) 2003 Sistina Software Limited.
+ * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+ *
+ * Device-Mapper dirty region hash interface.
+ *
+ * This file is released under the GPL.
+ */
+
+#ifndef DM_REGION_HASH_H
+#define DM_REGION_HASH_H
+
+#include <linux/dm-dirty-log.h>
+
+/*-----------------------------------------------------------------
+ * Region hash
+ *----------------------------------------------------------------*/
+struct dm_region_hash;
+struct dm_region;
+
+/*
+ * States a region can have.
+ */
+enum dm_rh_region_states {
+ DM_RH_CLEAN = 0x01, /* No writes in flight. */
+ DM_RH_DIRTY = 0x02, /* Writes in flight. */
+ DM_RH_NOSYNC = 0x04, /* Out of sync. */
+ DM_RH_RECOVERING = 0x08, /* Under resynchronization. */
+};
+
+/*
+ * Region hash create/destroy.
+ */
+struct bio_list;
+struct dm_region_hash *dm_region_hash_create(
+ void *context, void (*dispatch_bios)(void *context,
+ struct bio_list *bios),
+ void (*wakeup_workers)(void *context),
+ void (*wakeup_all_recovery_waiters)(void *context),
+ sector_t target_begin, unsigned max_recovery,
+ struct dm_dirty_log *log, uint32_t region_size,
+ region_t nr_regions);
+void dm_region_hash_destroy(struct dm_region_hash *rh);
+
+struct dm_dirty_log *dm_rh_dirty_log(struct dm_region_hash *rh);
+
+/*
+ * Conversion functions.
+ */
+region_t dm_rh_bio_to_region(struct dm_region_hash *rh, struct bio *bio);
+sector_t dm_rh_region_to_sector(struct dm_region_hash *rh, region_t region);
+void *dm_rh_region_context(struct dm_region *reg);
+
+/*
+ * Get region size and key (ie. number of the region).
+ */
+sector_t dm_rh_get_region_size(struct dm_region_hash *rh);
+region_t dm_rh_get_region_key(struct dm_region *reg);
+
+/*
+ * Get/set/update region state (and dirty log).
+ *
+ */
+int dm_rh_get_state(struct dm_region_hash *rh, region_t region, int may_block);
+void dm_rh_set_state(struct dm_region_hash *rh, region_t region,
+ enum dm_rh_region_states state, int may_block);
+
+/* Non-zero errors_handled leaves the state of the region NOSYNC */
+void dm_rh_update_states(struct dm_region_hash *rh, int errors_handled);
+
+/* Flush the region hash and dirty log. */
+int dm_rh_flush(struct dm_region_hash *rh);
+
+/* Inc/dec pending count on regions. */
+void dm_rh_inc_pending(struct dm_region_hash *rh, struct bio_list *bios);
+void dm_rh_dec(struct dm_region_hash *rh, region_t region);
+
+/* Delay bios on regions. */
+void dm_rh_delay(struct dm_region_hash *rh, struct bio *bio);
+
+void dm_rh_mark_nosync(struct dm_region_hash *rh,
+ struct bio *bio, unsigned done, int error);
+
+/*
+ * Region recovery control.
+ */
+
+/* Prepare some regions for recovery by starting to quiesce them. */
+void dm_rh_recovery_prepare(struct dm_region_hash *rh);
+
+/* Try fetching a quiesced region for recovery. */
+struct dm_region *dm_rh_recovery_start(struct dm_region_hash *rh);
+
+/* Report recovery end on a region. */
+void dm_rh_recovery_end(struct dm_region *reg, int error);
+
+/* Returns number of regions with recovery work outstanding. */
+int dm_rh_recovery_in_flight(struct dm_region_hash *rh);
+
+/* Start/stop recovery. */
+void dm_rh_start_recovery(struct dm_region_hash *rh);
+void dm_rh_stop_recovery(struct dm_region_hash *rh);
+
+#endif /* DM_REGION_HASH_H */
#define _DMA_REMAPPING_H
/*
- * We need a fixed PAGE_SIZE of 4K irrespective of
- * arch PAGE_SIZE for IOMMU page tables.
+ * VT-d hardware uses 4KiB page size regardless of host page size.
*/
-#define PAGE_SHIFT_4K (12)
-#define PAGE_SIZE_4K (1UL << PAGE_SHIFT_4K)
-#define PAGE_MASK_4K (((u64)-1) << PAGE_SHIFT_4K)
-#define PAGE_ALIGN_4K(addr) (((addr) + PAGE_SIZE_4K - 1) & PAGE_MASK_4K)
+#define VTD_PAGE_SHIFT (12)
+#define VTD_PAGE_SIZE (1UL << VTD_PAGE_SHIFT)
+#define VTD_PAGE_MASK (((u64)-1) << VTD_PAGE_SHIFT)
+#define VTD_PAGE_ALIGN(addr) (((addr) + VTD_PAGE_SIZE - 1) & VTD_PAGE_MASK)
-#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT_4K)
+#define IOVA_PFN(addr) ((addr) >> PAGE_SHIFT)
#define DMA_32BIT_PFN IOVA_PFN(DMA_32BIT_MASK)
#define DMA_64BIT_PFN IOVA_PFN(DMA_64BIT_MASK)
u64 val;
u64 rsvd1;
};
-#define ROOT_ENTRY_NR (PAGE_SIZE_4K/sizeof(struct root_entry))
+#define ROOT_ENTRY_NR (VTD_PAGE_SIZE/sizeof(struct root_entry))
static inline bool root_present(struct root_entry *root)
{
return (root->val & 1);
}
static inline void set_root_value(struct root_entry *root, unsigned long value)
{
- root->val |= value & PAGE_MASK_4K;
+ root->val |= value & VTD_PAGE_MASK;
}
struct context_entry;
{
return (struct context_entry *)
(root_present(root)?phys_to_virt(
- root->val & PAGE_MASK_4K):
+ root->val & VTD_PAGE_MASK) :
NULL);
}
#define context_present(c) ((c).lo & 1)
#define context_fault_disable(c) (((c).lo >> 1) & 1)
#define context_translation_type(c) (((c).lo >> 2) & 3)
-#define context_address_root(c) ((c).lo & PAGE_MASK_4K)
+#define context_address_root(c) ((c).lo & VTD_PAGE_MASK)
#define context_address_width(c) ((c).hi & 7)
#define context_domain_id(c) (((c).hi >> 8) & ((1 << 16) - 1))
} while (0)
#define CONTEXT_TT_MULTI_LEVEL 0
#define context_set_address_root(c, val) \
- do {(c).lo |= (val) & PAGE_MASK_4K;} while (0)
+ do {(c).lo |= (val) & VTD_PAGE_MASK; } while (0)
#define context_set_address_width(c, val) do {(c).hi |= (val) & 7;} while (0)
#define context_set_domain_id(c, val) \
do {(c).hi |= ((val) & ((1 << 16) - 1)) << 8;} while (0)
#define dma_set_pte_writable(p) do {(p).val |= DMA_PTE_WRITE;} while (0)
#define dma_set_pte_prot(p, prot) \
do {(p).val = ((p).val & ~3) | ((prot) & 3); } while (0)
-#define dma_pte_addr(p) ((p).val & PAGE_MASK_4K)
+#define dma_pte_addr(p) ((p).val & VTD_PAGE_MASK)
#define dma_set_pte_addr(p, addr) do {\
- (p).val |= ((addr) & PAGE_MASK_4K); } while (0)
+ (p).val |= ((addr) & VTD_PAGE_MASK); } while (0)
#define dma_pte_present(p) (((p).val & 3) != 0)
struct intel_iommu;
int gpio_base;
unsigned irq_base, irq_end;
+ /* package the two LED signals as output-only GPIOs? */
+ bool use_leds;
+
+ /* gpio-n should control VMMC(n+1) if BIT(n) in mmc_cd is set */
+ u8 mmc_cd;
+
/* For gpio-N, bit (1 << N) in "pullups" is set if that pullup
* should be enabled. Else, if that bit is set in "pulldowns",
* that pulldown is enabled. Don't waste power by letting any
/*----------------------------------------------------------------------*/
+int twl4030_sih_setup(int module);
+
/*
* FIXME completely stop using TWL4030_IRQ_BASE ... instead, pass the
* IRQ data to subsidiary devices using platform device resources.
#define TWL4030_MODIRQ_BCI (TWL4030_IRQ_BASE + 2)
#define TWL4030_MODIRQ_MADC (TWL4030_IRQ_BASE + 3)
/* #define TWL4030_MODIRQ_USB (TWL4030_IRQ_BASE + 4) */
-#define TWL4030_MODIRQ_PWR (TWL4030_IRQ_BASE + 5)
+/* #define TWL4030_MODIRQ_PWR (TWL4030_IRQ_BASE + 5) */
#define TWL4030_PWRIRQ_PWRBTN (TWL4030_PWR_IRQ_BASE + 0)
-#define TWL4030_PWRIRQ_CHG_PRES (TWL4030_PWR_IRQ_BASE + 1)
-#define TWL4030_PWRIRQ_USB_PRES (TWL4030_PWR_IRQ_BASE + 2)
-#define TWL4030_PWRIRQ_RTC (TWL4030_PWR_IRQ_BASE + 3)
-#define TWL4030_PWRIRQ_HOT_DIE (TWL4030_PWR_IRQ_BASE + 4)
-#define TWL4030_PWRIRQ_PWROK_TIMEOUT (TWL4030_PWR_IRQ_BASE + 5)
-#define TWL4030_PWRIRQ_MBCHG (TWL4030_PWR_IRQ_BASE + 6)
-#define TWL4030_PWRIRQ_SC_DETECT (TWL4030_PWR_IRQ_BASE + 7)
+/* #define TWL4030_PWRIRQ_CHG_PRES (TWL4030_PWR_IRQ_BASE + 1) */
+/* #define TWL4030_PWRIRQ_USB_PRES (TWL4030_PWR_IRQ_BASE + 2) */
+/* #define TWL4030_PWRIRQ_RTC (TWL4030_PWR_IRQ_BASE + 3) */
+/* #define TWL4030_PWRIRQ_HOT_DIE (TWL4030_PWR_IRQ_BASE + 4) */
+/* #define TWL4030_PWRIRQ_PWROK_TIMEOUT (TWL4030_PWR_IRQ_BASE + 5) */
+/* #define TWL4030_PWRIRQ_MBCHG (TWL4030_PWR_IRQ_BASE + 6) */
+/* #define TWL4030_PWRIRQ_SC_DETECT (TWL4030_PWR_IRQ_BASE + 7) */
/* Rest are unsued currently*/
/* TWL4030 GPIO interrupt definitions */
#define TWL4030_GPIO_IRQ_NO(n) (TWL4030_GPIO_IRQ_BASE + (n))
-#define TWL4030_GPIO_IS_ENABLE 1
/*
* Exported TWL4030 GPIO APIs
*
* WARNING -- use standard GPIO and IRQ calls instead; these will vanish.
*/
-int twl4030_get_gpio_datain(int gpio);
-int twl4030_request_gpio(int gpio);
int twl4030_set_gpio_debounce(int gpio, int enable);
-int twl4030_free_gpio(int gpio);
#if defined(CONFIG_TWL4030_BCI_BATTERY) || \
defined(CONFIG_TWL4030_BCI_BATTERY_MODULE)
#include <linux/io.h>
#include <linux/dma_remapping.h>
#include <asm/cacheflush.h>
+#include <asm/iommu.h>
/*
* Intel IOMMU register specification per version 1.0 public spec.
/* IOTLB_REG */
+#define DMA_TLB_FLUSH_GRANU_OFFSET 60
#define DMA_TLB_GLOBAL_FLUSH (((u64)1) << 60)
#define DMA_TLB_DSI_FLUSH (((u64)2) << 60)
#define DMA_TLB_PSI_FLUSH (((u64)3) << 60)
#define DMA_TLB_MAX_SIZE (0x3f)
/* INVALID_DESC */
+#define DMA_CCMD_INVL_GRANU_OFFSET 61
#define DMA_ID_TLB_GLOBAL_FLUSH (((u64)1) << 3)
#define DMA_ID_TLB_DSI_FLUSH (((u64)2) << 3)
#define DMA_ID_TLB_PSI_FLUSH (((u64)3) << 3)
#define dma_frcd_type(d) ((d >> 30) & 1)
#define dma_frcd_fault_reason(c) (c & 0xff)
#define dma_frcd_source_id(c) (c & 0xffff)
-#define dma_frcd_page_addr(d) (d & (((u64)-1) << 12)) /* low 64 bit */
-
-#define DMAR_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000) /* 10sec */
-
-#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
-{\
- cycles_t start_time = get_cycles();\
- while (1) {\
- sts = op (iommu->reg + offset);\
- if (cond)\
- break;\
+/* low 64 bit */
+#define dma_frcd_page_addr(d) (d & (((u64)-1) << PAGE_SHIFT))
+
+#define IOMMU_WAIT_OP(iommu, offset, op, cond, sts) \
+do { \
+ cycles_t start_time = get_cycles(); \
+ while (1) { \
+ sts = op(iommu->reg + offset); \
+ if (cond) \
+ break; \
if (DMAR_OPERATION_TIMEOUT < (get_cycles() - start_time))\
- panic("DMAR hardware is malfunctioning\n");\
- cpu_relax();\
- }\
-}
+ panic("DMAR hardware is malfunctioning\n"); \
+ cpu_relax(); \
+ } \
+} while (0)
#define QI_LENGTH 256 /* queue length */
#define QI_IWD_STATUS_DATA(d) (((u64)d) << 32)
#define QI_IWD_STATUS_WRITE (((u64)1) << 5)
+#define QI_IOTLB_DID(did) (((u64)did) << 16)
+#define QI_IOTLB_DR(dr) (((u64)dr) << 7)
+#define QI_IOTLB_DW(dw) (((u64)dw) << 6)
+#define QI_IOTLB_GRAN(gran) (((u64)gran) >> (DMA_TLB_FLUSH_GRANU_OFFSET-4))
+#define QI_IOTLB_ADDR(addr) (((u64)addr) & VTD_PAGE_MASK)
+#define QI_IOTLB_IH(ih) (((u64)ih) << 6)
+#define QI_IOTLB_AM(am) (((u8)am))
+
+#define QI_CC_FM(fm) (((u64)fm) << 48)
+#define QI_CC_SID(sid) (((u64)sid) << 32)
+#define QI_CC_DID(did) (((u64)did) << 16)
+#define QI_CC_GRAN(gran) (((u64)gran) >> (DMA_CCMD_INVL_GRANU_OFFSET-4))
+
struct qi_desc {
u64 low, high;
};
};
#endif
+struct iommu_flush {
+ int (*flush_context)(struct intel_iommu *iommu, u16 did, u16 sid, u8 fm,
+ u64 type, int non_present_entry_flush);
+ int (*flush_iotlb)(struct intel_iommu *iommu, u16 did, u64 addr,
+ unsigned int size_order, u64 type, int non_present_entry_flush);
+};
+
struct intel_iommu {
void __iomem *reg; /* Pointer to hardware regs, virtual addr */
u64 cap;
unsigned char name[7]; /* Device Name */
struct msi_msg saved_msg;
struct sys_device sysdev;
+ struct iommu_flush flush;
#endif
struct q_inval *qi; /* Queued invalidation info */
#ifdef CONFIG_INTR_REMAP
extern int dmar_enable_qi(struct intel_iommu *iommu);
extern void qi_global_iec(struct intel_iommu *iommu);
+extern int qi_flush_context(struct intel_iommu *iommu, u16 did, u16 sid,
+ u8 fm, u64 type, int non_present_entry_flush);
+extern int qi_flush_iotlb(struct intel_iommu *iommu, u16 did, u64 addr,
+ unsigned int size_order, u64 type,
+ int non_present_entry_flush);
+
extern void qi_submit_sync(struct qi_desc *desc, struct intel_iommu *iommu);
void intel_iommu_domain_exit(struct dmar_domain *domain);
}
#endif /* CONFIG_DMAR */
+extern void *intel_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
+extern void intel_free_coherent(struct device *, size_t, void *, dma_addr_t);
+extern dma_addr_t intel_map_single(struct device *, phys_addr_t, size_t, int);
+extern void intel_unmap_single(struct device *, dma_addr_t, size_t, int);
+extern int intel_map_sg(struct device *, struct scatterlist *, int, int);
+extern void intel_unmap_sg(struct device *, struct scatterlist *, int, int);
+
#endif
# define for_each_irq_desc(irq, desc) \
for (irq = 0, desc = irq_desc; irq < nr_irqs; irq++, desc++)
-# define for_each_irq_desc_reverse(irq, desc) \
- for (irq = nr_irqs -1, desc = irq_desc + (nr_irqs -1 ); \
- irq > 0; irq--, desc--)
+# define for_each_irq_desc_reverse(irq, desc) \
+ for (irq = nr_irqs - 1, desc = irq_desc + (nr_irqs - 1); \
+ irq >= 0; irq--, desc--)
#endif
#define for_each_irq_nr(irq) \
(journal_t *, unsigned long, unsigned long, unsigned long);
extern int journal_create (journal_t *);
extern int journal_load (journal_t *journal);
-extern void journal_destroy (journal_t *);
+extern int journal_destroy (journal_t *);
extern int journal_recover (journal_t *journal);
extern int journal_wipe (journal_t *, int);
extern int journal_skip_recovery (journal_t *);
ATA_EHI_DID_RESET = ATA_EHI_DID_SOFTRESET | ATA_EHI_DID_HARDRESET,
+ /* mask of flags to transfer *to* the slave link */
+ ATA_EHI_TO_SLAVE_MASK = ATA_EHI_NO_AUTOPSY | ATA_EHI_QUIET,
+
/* max tries if error condition is still set after ->error_handler */
ATA_EH_MAX_TRIES = 5,
MLX4_MAILBOX_SIZE = 4096
};
+enum {
+ /* set port opcode modifiers */
+ MLX4_SET_PORT_GENERAL = 0x0,
+ MLX4_SET_PORT_RQP_CALC = 0x1,
+ MLX4_SET_PORT_MAC_TABLE = 0x2,
+ MLX4_SET_PORT_VLAN_TABLE = 0x3,
+ MLX4_SET_PORT_PRIO_MAP = 0x4,
+};
+
struct mlx4_dev;
struct mlx4_cmd_mailbox {
MLX4_DEV_CAP_FLAG_IPOIB_CSUM = 1 << 7,
MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR = 1 << 8,
MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR = 1 << 9,
+ MLX4_DEV_CAP_FLAG_DPDP = 1 << 12,
MLX4_DEV_CAP_FLAG_MEM_WINDOW = 1 << 16,
MLX4_DEV_CAP_FLAG_APM = 1 << 17,
MLX4_DEV_CAP_FLAG_ATOMIC = 1 << 18,
MLX4_MTT_FLAG_PRESENT = 1
};
+enum mlx4_qp_region {
+ MLX4_QP_REGION_FW = 0,
+ MLX4_QP_REGION_ETH_ADDR,
+ MLX4_QP_REGION_FC_ADDR,
+ MLX4_QP_REGION_FC_EXCH,
+ MLX4_NUM_QP_REGION
+};
+
+enum mlx4_port_type {
+ MLX4_PORT_TYPE_IB = 1 << 0,
+ MLX4_PORT_TYPE_ETH = 1 << 1,
+};
+
+enum mlx4_special_vlan_idx {
+ MLX4_NO_VLAN_IDX = 0,
+ MLX4_VLAN_MISS_IDX,
+ MLX4_VLAN_REGULAR
+};
+
+enum {
+ MLX4_NUM_FEXCH = 64 * 1024,
+};
+
static inline u64 mlx4_fw_ver(u64 major, u64 minor, u64 subminor)
{
return (major << 32) | (minor << 16) | subminor;
u64 fw_ver;
int num_ports;
int vl_cap[MLX4_MAX_PORTS + 1];
- int mtu_cap[MLX4_MAX_PORTS + 1];
+ int ib_mtu_cap[MLX4_MAX_PORTS + 1];
+ u64 def_mac[MLX4_MAX_PORTS + 1];
+ int eth_mtu_cap[MLX4_MAX_PORTS + 1];
int gid_table_len[MLX4_MAX_PORTS + 1];
int pkey_table_len[MLX4_MAX_PORTS + 1];
int local_ca_ack_delay;
int max_rq_desc_sz;
int max_qp_init_rdma;
int max_qp_dest_rdma;
- int reserved_qps;
int sqp_start;
int num_srqs;
int max_srq_wqes;
u16 stat_rate_support;
u8 port_width_cap[MLX4_MAX_PORTS + 1];
int max_gso_sz;
+ int reserved_qps_cnt[MLX4_NUM_QP_REGION];
+ int reserved_qps;
+ int reserved_qps_base[MLX4_NUM_QP_REGION];
+ int log_num_macs;
+ int log_num_vlans;
+ int log_num_prios;
+ enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1];
+ u8 supported_type[MLX4_MAX_PORTS + 1];
+ u32 port_mask;
};
struct mlx4_buf_list {
u64 si_guid;
};
+#define mlx4_foreach_port(port, dev, type) \
+ for ((port) = 1; (port) <= (dev)->caps.num_ports; (port)++) \
+ if (((type) == MLX4_PORT_TYPE_IB ? (dev)->caps.port_mask : \
+ ~(dev)->caps.port_mask) & 1 << ((port) - 1))
+
int mlx4_buf_alloc(struct mlx4_dev *dev, int size, int max_direct,
struct mlx4_buf *buf);
void mlx4_buf_free(struct mlx4_dev *dev, int size, struct mlx4_buf *buf);
int collapsed);
void mlx4_cq_free(struct mlx4_dev *dev, struct mlx4_cq *cq);
-int mlx4_qp_alloc(struct mlx4_dev *dev, int sqpn, struct mlx4_qp *qp);
+int mlx4_qp_reserve_range(struct mlx4_dev *dev, int cnt, int align, int *base);
+void mlx4_qp_release_range(struct mlx4_dev *dev, int base_qpn, int cnt);
+
+int mlx4_qp_alloc(struct mlx4_dev *dev, int qpn, struct mlx4_qp *qp);
void mlx4_qp_free(struct mlx4_dev *dev, struct mlx4_qp *qp);
int mlx4_srq_alloc(struct mlx4_dev *dev, u32 pdn, struct mlx4_mtt *mtt,
int block_mcast_loopback);
int mlx4_multicast_detach(struct mlx4_dev *dev, struct mlx4_qp *qp, u8 gid[16]);
+int mlx4_register_mac(struct mlx4_dev *dev, u8 port, u64 mac, int *index);
+void mlx4_unregister_mac(struct mlx4_dev *dev, u8 port, int index);
+
+int mlx4_register_vlan(struct mlx4_dev *dev, u8 port, u16 vlan, int *index);
+void mlx4_unregister_vlan(struct mlx4_dev *dev, u8 port, int index);
+
int mlx4_map_phys_fmr(struct mlx4_dev *dev, struct mlx4_fmr *fmr, u64 *page_list,
int npages, u64 iova, u32 *lkey, u32 *rkey);
int mlx4_fmr_alloc(struct mlx4_dev *dev, u32 pd, u32 access, int max_pages,
void oprofile_arch_exit(void);
/**
- * Add data to the event buffer.
- * The data passed is free-form, but typically consists of
- * file offsets, dcookies, context information, and ESCAPE codes.
- */
-void add_event_entry(unsigned long data);
-
-/**
* Add a sample. This may be called from any context. Pass
* smp_processor_id() as cpu.
*/
/** lock for read/write safety */
extern spinlock_t oprofilefs_lock;
+
+/**
+ * Add the contents of a circular buffer to the event buffer.
+ */
+void oprofile_put_buff(unsigned long *buf, unsigned int start,
+ unsigned int stop, unsigned int max);
+
+unsigned long oprofile_get_cpu_buffer_size(void);
+void oprofile_cpu_buffer_inc_smpl_lost(void);
#endif /* OPROFILE_H */
{
return NULL;
}
+
+static inline void page_cgroup_init(void)
+{
+}
+
#endif
#endif
#define PCI_VENDOR_ID_OXSEMI 0x1415
#define PCI_DEVICE_ID_OXSEMI_12PCI840 0x8403
+#define PCI_DEVICE_ID_OXSEMI_PCIe840 0xC000
+#define PCI_DEVICE_ID_OXSEMI_PCIe840_G 0xC004
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_0 0xC100
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_0_G 0xC104
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1 0xC110
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_G 0xC114
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_U 0xC118
+#define PCI_DEVICE_ID_OXSEMI_PCIe952_1_GU 0xC11C
#define PCI_DEVICE_ID_OXSEMI_16PCI954 0x9501
#define PCI_DEVICE_ID_OXSEMI_16PCI95N 0x9511
#define PCI_DEVICE_ID_OXSEMI_16PCI954PP 0x9513
#if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
void create_prof_cpu_mask(struct proc_dir_entry *de);
+int create_proc_profile(void);
#else
static inline void create_prof_cpu_mask(struct proc_dir_entry *de)
{
}
+
+static inline int create_proc_profile(void)
+{
+ return 0;
+}
#endif
enum profile_type {
/* init basic kernel profiler */
int profile_init(void);
int profile_setup(char *str);
-int create_proc_profile(void);
void profile_tick(int type);
/*
extern void account_process_tick(struct task_struct *task, int user);
extern void update_process_times(int user);
extern void scheduler_tick(void);
-extern void hrtick_resched(void);
extern void sched_show_task(struct task_struct *p);
extern unsigned int sysctl_sched_migration_cost;
extern unsigned int sysctl_sched_nr_migrate;
extern unsigned int sysctl_sched_shares_ratelimit;
+extern unsigned int sysctl_sched_shares_thresh;
int sched_nr_latency_handler(struct ctl_table *table, int write,
struct file *file, void __user *buffer, size_t *length,
--- /dev/null
+/*
+ * Wireless USB Wire Adapter constants and structures.
+ *
+ * Copyright (C) 2005-2006 Intel Corporation.
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: organize properly, group logically
+ *
+ * All the event structures are defined in uwb/spec.h, as they are
+ * common to the WHCI and WUSB radio control interfaces.
+ *
+ * References:
+ * [WUSB] Wireless Universal Serial Bus Specification, revision 1.0, ch8
+ */
+#ifndef __LINUX_USB_WUSB_WA_H
+#define __LINUX_USB_WUSB_WA_H
+
+/**
+ * Radio Command Request for the Radio Control Interface
+ *
+ * Radio Control Interface command and event codes are the same as
+ * WHCI, and listed in include/linux/uwb.h:UWB_RC_{CMD,EVT}_*
+ */
+enum {
+ WA_EXEC_RC_CMD = 40, /* Radio Control command Request */
+};
+
+/* Wireless Adapter Requests ([WUSB] table 8-51) */
+enum {
+ WUSB_REQ_ADD_MMC_IE = 20,
+ WUSB_REQ_REMOVE_MMC_IE = 21,
+ WUSB_REQ_SET_NUM_DNTS = 22,
+ WUSB_REQ_SET_CLUSTER_ID = 23,
+ WUSB_REQ_SET_DEV_INFO = 24,
+ WUSB_REQ_GET_TIME = 25,
+ WUSB_REQ_SET_STREAM_IDX = 26,
+ WUSB_REQ_SET_WUSB_MAS = 27,
+};
+
+
+/* Wireless Adapter WUSB Channel Time types ([WUSB] table 8-52) */
+enum {
+ WUSB_TIME_ADJ = 0,
+ WUSB_TIME_BPST = 1,
+ WUSB_TIME_WUSB = 2,
+};
+
+enum {
+ WA_ENABLE = 0x01,
+ WA_RESET = 0x02,
+ RPIPE_PAUSE = 0x1,
+};
+
+/* Responses from Get Status request ([WUSB] section 8.3.1.6) */
+enum {
+ WA_STATUS_ENABLED = 0x01,
+ WA_STATUS_RESETTING = 0x02
+};
+
+enum rpipe_crs {
+ RPIPE_CRS_CTL = 0x01,
+ RPIPE_CRS_ISO = 0x02,
+ RPIPE_CRS_BULK = 0x04,
+ RPIPE_CRS_INTR = 0x08
+};
+
+/**
+ * RPipe descriptor ([WUSB] section 8.5.2.11)
+ *
+ * FIXME: explain rpipes
+ */
+struct usb_rpipe_descriptor {
+ u8 bLength;
+ u8 bDescriptorType;
+ __le16 wRPipeIndex;
+ __le16 wRequests;
+ __le16 wBlocks; /* rw if 0 */
+ __le16 wMaxPacketSize; /* rw? */
+ u8 bHSHubAddress; /* reserved: 0 */
+ u8 bHSHubPort; /* ??? FIXME ??? */
+ u8 bSpeed; /* rw: xfer rate 'enum uwb_phy_rate' */
+ u8 bDeviceAddress; /* rw: Target device address */
+ u8 bEndpointAddress; /* rw: Target EP address */
+ u8 bDataSequence; /* ro: Current Data sequence */
+ __le32 dwCurrentWindow; /* ro */
+ u8 bMaxDataSequence; /* ro?: max supported seq */
+ u8 bInterval; /* rw: */
+ u8 bOverTheAirInterval; /* rw: */
+ u8 bmAttribute; /* ro? */
+ u8 bmCharacteristics; /* ro? enum rpipe_attr, supported xsactions */
+ u8 bmRetryOptions; /* rw? */
+ __le16 wNumTransactionErrors; /* rw */
+} __attribute__ ((packed));
+
+/**
+ * Wire Adapter Notification types ([WUSB] sections 8.4.5 & 8.5.4)
+ *
+ * These are the notifications coming on the notification endpoint of
+ * an HWA and a DWA.
+ */
+enum wa_notif_type {
+ DWA_NOTIF_RWAKE = 0x91,
+ DWA_NOTIF_PORTSTATUS = 0x92,
+ WA_NOTIF_TRANSFER = 0x93,
+ HWA_NOTIF_BPST_ADJ = 0x94,
+ HWA_NOTIF_DN = 0x95,
+};
+
+/**
+ * Wire Adapter notification header
+ *
+ * Notifications coming from a wire adapter use a common header
+ * defined in [WUSB] sections 8.4.5 & 8.5.4.
+ */
+struct wa_notif_hdr {
+ u8 bLength;
+ u8 bNotifyType; /* enum wa_notif_type */
+} __attribute__((packed));
+
+/**
+ * HWA DN Received notification [(WUSB] section 8.5.4.2)
+ *
+ * The DNData is specified in WUSB1.0[7.6]. For each device
+ * notification we received, we just need to dispatch it.
+ *
+ * @dndata: this is really an array of notifications, but all start
+ * with the same header.
+ */
+struct hwa_notif_dn {
+ struct wa_notif_hdr hdr;
+ u8 bSourceDeviceAddr; /* from errata 2005/07 */
+ u8 bmAttributes;
+ struct wusb_dn_hdr dndata[];
+} __attribute__((packed));
+
+/* [WUSB] section 8.3.3 */
+enum wa_xfer_type {
+ WA_XFER_TYPE_CTL = 0x80,
+ WA_XFER_TYPE_BI = 0x81, /* bulk/interrupt */
+ WA_XFER_TYPE_ISO = 0x82,
+ WA_XFER_RESULT = 0x83,
+ WA_XFER_ABORT = 0x84,
+};
+
+/* [WUSB] section 8.3.3 */
+struct wa_xfer_hdr {
+ u8 bLength; /* 0x18 */
+ u8 bRequestType; /* 0x80 WA_REQUEST_TYPE_CTL */
+ __le16 wRPipe; /* RPipe index */
+ __le32 dwTransferID; /* Host-assigned ID */
+ __le32 dwTransferLength; /* Length of data to xfer */
+ u8 bTransferSegment;
+} __attribute__((packed));
+
+struct wa_xfer_ctl {
+ struct wa_xfer_hdr hdr;
+ u8 bmAttribute;
+ __le16 wReserved;
+ struct usb_ctrlrequest baSetupData;
+} __attribute__((packed));
+
+struct wa_xfer_bi {
+ struct wa_xfer_hdr hdr;
+ u8 bReserved;
+ __le16 wReserved;
+} __attribute__((packed));
+
+struct wa_xfer_hwaiso {
+ struct wa_xfer_hdr hdr;
+ u8 bReserved;
+ __le16 wPresentationTime;
+ __le32 dwNumOfPackets;
+ /* FIXME: u8 pktdata[]? */
+} __attribute__((packed));
+
+/* [WUSB] section 8.3.3.5 */
+struct wa_xfer_abort {
+ u8 bLength;
+ u8 bRequestType;
+ __le16 wRPipe; /* RPipe index */
+ __le32 dwTransferID; /* Host-assigned ID */
+} __attribute__((packed));
+
+/**
+ * WA Transfer Complete notification ([WUSB] section 8.3.3.3)
+ *
+ */
+struct wa_notif_xfer {
+ struct wa_notif_hdr hdr;
+ u8 bEndpoint;
+ u8 Reserved;
+} __attribute__((packed));
+
+/** Transfer result basic codes [WUSB] table 8-15 */
+enum {
+ WA_XFER_STATUS_SUCCESS,
+ WA_XFER_STATUS_HALTED,
+ WA_XFER_STATUS_DATA_BUFFER_ERROR,
+ WA_XFER_STATUS_BABBLE,
+ WA_XFER_RESERVED,
+ WA_XFER_STATUS_NOT_FOUND,
+ WA_XFER_STATUS_INSUFFICIENT_RESOURCE,
+ WA_XFER_STATUS_TRANSACTION_ERROR,
+ WA_XFER_STATUS_ABORTED,
+ WA_XFER_STATUS_RPIPE_NOT_READY,
+ WA_XFER_INVALID_FORMAT,
+ WA_XFER_UNEXPECTED_SEGMENT_NUMBER,
+ WA_XFER_STATUS_RPIPE_TYPE_MISMATCH,
+};
+
+/** [WUSB] section 8.3.3.4 */
+struct wa_xfer_result {
+ struct wa_notif_hdr hdr;
+ __le32 dwTransferID;
+ __le32 dwTransferLength;
+ u8 bTransferSegment;
+ u8 bTransferStatus;
+ __le32 dwNumOfPackets;
+} __attribute__((packed));
+
+/**
+ * Wire Adapter Class Descriptor ([WUSB] section 8.5.2.7).
+ *
+ * NOTE: u16 fields are read Little Endian from the hardware.
+ *
+ * @bNumPorts is the original max number of devices that the host can
+ * connect; we might chop this so the stack can handle
+ * it. In case you need to access it, use wusbhc->ports_max
+ * if it is a Wireless USB WA.
+ */
+struct usb_wa_descriptor {
+ u8 bLength;
+ u8 bDescriptorType;
+ u16 bcdWAVersion;
+ u8 bNumPorts; /* don't use!! */
+ u8 bmAttributes; /* Reserved == 0 */
+ u16 wNumRPipes;
+ u16 wRPipeMaxBlock;
+ u8 bRPipeBlockSize;
+ u8 bPwrOn2PwrGood;
+ u8 bNumMMCIEs;
+ u8 DeviceRemovable; /* FIXME: in DWA this is up to 16 bytes */
+} __attribute__((packed));
+
+/**
+ * HWA Device Information Buffer (WUSB1.0[T8.54])
+ */
+struct hwa_dev_info {
+ u8 bmDeviceAvailability[32]; /* FIXME: ignored for now */
+ u8 bDeviceAddress;
+ __le16 wPHYRates;
+ u8 bmDeviceAttribute;
+} __attribute__((packed));
+
+#endif /* #ifndef __LINUX_USB_WUSB_WA_H */
--- /dev/null
+/*
+ * Wireless USB Standard Definitions
+ * Event Size Tables
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ * FIXME: organize properly, group logically
+ *
+ * All the event structures are defined in uwb/spec.h, as they are
+ * common to the WHCI and WUSB radio control interfaces.
+ */
+
+#ifndef __WUSB_H__
+#define __WUSB_H__
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/uwb/spec.h>
+#include <linux/usb/ch9.h>
+#include <linux/param.h>
+
+/**
+ * WUSB Information Element header
+ *
+ * I don't know why, they decided to make it different to the MBOA MAC
+ * IE Header; beats me.
+ */
+struct wuie_hdr {
+ u8 bLength;
+ u8 bIEIdentifier;
+} __attribute__((packed));
+
+enum {
+ WUIE_ID_WCTA = 0x80,
+ WUIE_ID_CONNECTACK,
+ WUIE_ID_HOST_INFO,
+ WUIE_ID_CHANGE_ANNOUNCE,
+ WUIE_ID_DEVICE_DISCONNECT,
+ WUIE_ID_HOST_DISCONNECT,
+ WUIE_ID_KEEP_ALIVE = 0x89,
+ WUIE_ID_ISOCH_DISCARD,
+ WUIE_ID_RESET_DEVICE,
+};
+
+/**
+ * Maximum number of array elements in a WUSB IE.
+ *
+ * WUSB1.0[7.5 before table 7-38] says that in WUSB IEs that
+ * are "arrays" have to limited to 4 elements. So we define it
+ * like that to ease up and submit only the neeed size.
+ */
+#define WUIE_ELT_MAX 4
+
+/**
+ * Wrapper for the data that defines a CHID, a CDID or a CK
+ *
+ * WUSB defines that CHIDs, CDIDs and CKs are a 16 byte string of
+ * data. In order to avoid confusion and enforce types, we wrap it.
+ *
+ * Make it packed, as we use it in some hw defintions.
+ */
+struct wusb_ckhdid {
+ u8 data[16];
+} __attribute__((packed));
+
+const static
+struct wusb_ckhdid wusb_ckhdid_zero = { .data = { 0 } };
+
+#define WUSB_CKHDID_STRSIZE (3 * sizeof(struct wusb_ckhdid) + 1)
+
+/**
+ * WUSB IE: Host Information (WUSB1.0[7.5.2])
+ *
+ * Used to provide information about the host to the Wireless USB
+ * devices in range (CHID can be used as an ASCII string).
+ */
+struct wuie_host_info {
+ struct wuie_hdr hdr;
+ __le16 attributes;
+ struct wusb_ckhdid CHID;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Connect Ack (WUSB1.0[7.5.1])
+ *
+ * Used to acknowledge device connect requests. See note for
+ * WUIE_ELT_MAX.
+ */
+struct wuie_connect_ack {
+ struct wuie_hdr hdr;
+ struct {
+ struct wusb_ckhdid CDID;
+ u8 bDeviceAddress; /* 0 means unused */
+ u8 bReserved;
+ } blk[WUIE_ELT_MAX];
+} __attribute__((packed));
+
+/**
+ * WUSB IE Host Information Element, Connect Availability
+ *
+ * WUSB1.0[7.5.2], bmAttributes description
+ */
+enum {
+ WUIE_HI_CAP_RECONNECT = 0,
+ WUIE_HI_CAP_LIMITED,
+ WUIE_HI_CAP_RESERVED,
+ WUIE_HI_CAP_ALL,
+};
+
+/**
+ * WUSB IE: Channel Stop (WUSB1.0[7.5.8])
+ *
+ * Tells devices the host is going to stop sending MMCs and will dissapear.
+ */
+struct wuie_channel_stop {
+ struct wuie_hdr hdr;
+ u8 attributes;
+ u8 timestamp[3];
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Keepalive (WUSB1.0[7.5.9])
+ *
+ * Ask device(s) to send keepalives.
+ */
+struct wuie_keep_alive {
+ struct wuie_hdr hdr;
+ u8 bDeviceAddress[WUIE_ELT_MAX];
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Reset device (WUSB1.0[7.5.11])
+ *
+ * Tell device to reset; in all truth, we can fit 4 CDIDs, but we only
+ * use it for one at the time...
+ *
+ * In any case, this request is a wee bit silly: why don't they target
+ * by address??
+ */
+struct wuie_reset {
+ struct wuie_hdr hdr;
+ struct wusb_ckhdid CDID;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Disconnect device (WUSB1.0[7.5.11])
+ *
+ * Tell device to disconnect; we can fit 4 addresses, but we only use
+ * it for one at the time...
+ */
+struct wuie_disconnect {
+ struct wuie_hdr hdr;
+ u8 bDeviceAddress;
+ u8 padding;
+} __attribute__((packed));
+
+/**
+ * WUSB IE: Host disconnect ([WUSB] section 7.5.5)
+ *
+ * Tells all connected devices to disconnect.
+ */
+struct wuie_host_disconnect {
+ struct wuie_hdr hdr;
+} __attribute__((packed));
+
+/**
+ * WUSB Device Notification header (WUSB1.0[7.6])
+ */
+struct wusb_dn_hdr {
+ u8 bType;
+ u8 notifdata[];
+} __attribute__((packed));
+
+/** Device Notification codes (WUSB1.0[Table 7-54]) */
+enum WUSB_DN {
+ WUSB_DN_CONNECT = 0x01,
+ WUSB_DN_DISCONNECT = 0x02,
+ WUSB_DN_EPRDY = 0x03,
+ WUSB_DN_MASAVAILCHANGED = 0x04,
+ WUSB_DN_RWAKE = 0x05,
+ WUSB_DN_SLEEP = 0x06,
+ WUSB_DN_ALIVE = 0x07,
+};
+
+/** WUSB Device Notification Connect */
+struct wusb_dn_connect {
+ struct wusb_dn_hdr hdr;
+ __le16 attributes;
+ struct wusb_ckhdid CDID;
+} __attribute__((packed));
+
+static inline int wusb_dn_connect_prev_dev_addr(const struct wusb_dn_connect *dn)
+{
+ return le16_to_cpu(dn->attributes) & 0xff;
+}
+
+static inline int wusb_dn_connect_new_connection(const struct wusb_dn_connect *dn)
+{
+ return (le16_to_cpu(dn->attributes) >> 8) & 0x1;
+}
+
+static inline int wusb_dn_connect_beacon_behavior(const struct wusb_dn_connect *dn)
+{
+ return (le16_to_cpu(dn->attributes) >> 9) & 0x03;
+}
+
+/** Device is alive (aka: pong) (WUSB1.0[7.6.7]) */
+struct wusb_dn_alive {
+ struct wusb_dn_hdr hdr;
+} __attribute__((packed));
+
+/** Device is disconnecting (WUSB1.0[7.6.2]) */
+struct wusb_dn_disconnect {
+ struct wusb_dn_hdr hdr;
+} __attribute__((packed));
+
+/* General constants */
+enum {
+ WUSB_TRUST_TIMEOUT_MS = 4000, /* [WUSB] section 4.15.1 */
+};
+
+static inline size_t ckhdid_printf(char *pr_ckhdid, size_t size,
+ const struct wusb_ckhdid *ckhdid)
+{
+ return scnprintf(pr_ckhdid, size,
+ "%02hx %02hx %02hx %02hx %02hx %02hx %02hx %02hx "
+ "%02hx %02hx %02hx %02hx %02hx %02hx %02hx %02hx",
+ ckhdid->data[0], ckhdid->data[1],
+ ckhdid->data[2], ckhdid->data[3],
+ ckhdid->data[4], ckhdid->data[5],
+ ckhdid->data[6], ckhdid->data[7],
+ ckhdid->data[8], ckhdid->data[9],
+ ckhdid->data[10], ckhdid->data[11],
+ ckhdid->data[12], ckhdid->data[13],
+ ckhdid->data[14], ckhdid->data[15]);
+}
+
+/*
+ * WUSB Crypto stuff (WUSB1.0[6])
+ */
+
+extern const char *wusb_et_name(u8);
+
+/**
+ * WUSB key index WUSB1.0[7.3.2.4], for usage when setting keys for
+ * the host or the device.
+ */
+static inline u8 wusb_key_index(int index, int type, int originator)
+{
+ return (originator << 6) | (type << 4) | index;
+}
+
+#define WUSB_KEY_INDEX_TYPE_PTK 0 /* for HWA only */
+#define WUSB_KEY_INDEX_TYPE_ASSOC 1
+#define WUSB_KEY_INDEX_TYPE_GTK 2
+#define WUSB_KEY_INDEX_ORIGINATOR_HOST 0
+#define WUSB_KEY_INDEX_ORIGINATOR_DEVICE 1
+
+/* A CCM Nonce, defined in WUSB1.0[6.4.1] */
+struct aes_ccm_nonce {
+ u8 sfn[6]; /* Little Endian */
+ u8 tkid[3]; /* LE */
+ struct uwb_dev_addr dest_addr;
+ struct uwb_dev_addr src_addr;
+} __attribute__((packed));
+
+/* A CCM operation label, defined on WUSB1.0[6.5.x] */
+struct aes_ccm_label {
+ u8 data[14];
+} __attribute__((packed));
+
+/*
+ * Input to the key derivation sequence defined in
+ * WUSB1.0[6.5.1]. Rest of the data is in the CCM Nonce passed to the
+ * PRF function.
+ */
+struct wusb_keydvt_in {
+ u8 hnonce[16];
+ u8 dnonce[16];
+} __attribute__((packed));
+
+/*
+ * Output from the key derivation sequence defined in
+ * WUSB1.0[6.5.1].
+ */
+struct wusb_keydvt_out {
+ u8 kck[16];
+ u8 ptk[16];
+} __attribute__((packed));
+
+/* Pseudo Random Function WUSB1.0[6.5] */
+extern int wusb_crypto_init(void);
+extern void wusb_crypto_exit(void);
+extern ssize_t wusb_prf(void *out, size_t out_size,
+ const u8 key[16], const struct aes_ccm_nonce *_n,
+ const struct aes_ccm_label *a,
+ const void *b, size_t blen, size_t len);
+
+static inline int wusb_prf_64(void *out, size_t out_size, const u8 key[16],
+ const struct aes_ccm_nonce *n,
+ const struct aes_ccm_label *a,
+ const void *b, size_t blen)
+{
+ return wusb_prf(out, out_size, key, n, a, b, blen, 64);
+}
+
+static inline int wusb_prf_128(void *out, size_t out_size, const u8 key[16],
+ const struct aes_ccm_nonce *n,
+ const struct aes_ccm_label *a,
+ const void *b, size_t blen)
+{
+ return wusb_prf(out, out_size, key, n, a, b, blen, 128);
+}
+
+static inline int wusb_prf_256(void *out, size_t out_size, const u8 key[16],
+ const struct aes_ccm_nonce *n,
+ const struct aes_ccm_label *a,
+ const void *b, size_t blen)
+{
+ return wusb_prf(out, out_size, key, n, a, b, blen, 256);
+}
+
+/* Key derivation WUSB1.0[6.5.1] */
+static inline int wusb_key_derive(struct wusb_keydvt_out *keydvt_out,
+ const u8 key[16],
+ const struct aes_ccm_nonce *n,
+ const struct wusb_keydvt_in *keydvt_in)
+{
+ const struct aes_ccm_label a = { .data = "Pair-wise keys" };
+ return wusb_prf_256(keydvt_out, sizeof(*keydvt_out), key, n, &a,
+ keydvt_in, sizeof(*keydvt_in));
+}
+
+/*
+ * Out-of-band MIC Generation WUSB1.0[6.5.2]
+ *
+ * Compute the MIC over @key, @n and @hs and place it in @mic_out.
+ *
+ * @mic_out: Where to place the 8 byte MIC tag
+ * @key: KCK from the derivation process
+ * @n: CCM nonce, n->sfn == 0, TKID as established in the
+ * process.
+ * @hs: Handshake struct for phase 2 of the 4-way.
+ * hs->bStatus and hs->bReserved are zero.
+ * hs->bMessageNumber is 2 (WUSB1.0[7.3.2.5.2]
+ * hs->dest_addr is the device's USB address padded with 0
+ * hs->src_addr is the hosts's UWB device address
+ * hs->mic is ignored (as we compute that value).
+ */
+static inline int wusb_oob_mic(u8 mic_out[8], const u8 key[16],
+ const struct aes_ccm_nonce *n,
+ const struct usb_handshake *hs)
+{
+ const struct aes_ccm_label a = { .data = "out-of-bandMIC" };
+ return wusb_prf_64(mic_out, 8, key, n, &a,
+ hs, sizeof(*hs) - sizeof(hs->MIC));
+}
+
+#endif /* #ifndef __WUSB_H__ */
--- /dev/null
+/*
+ * Ultra Wide Band
+ * UWB API
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc: overview of the API, different parts and pointers
+ */
+
+#ifndef __LINUX__UWB_H__
+#define __LINUX__UWB_H__
+
+#include <linux/limits.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/timer.h>
+#include <linux/workqueue.h>
+#include <linux/uwb/spec.h>
+
+struct uwb_dev;
+struct uwb_beca_e;
+struct uwb_rc;
+struct uwb_rsv;
+struct uwb_dbg;
+
+/**
+ * struct uwb_dev - a UWB Device
+ * @rc: UWB Radio Controller that discovered the device (kind of its
+ * parent).
+ * @bce: a beacon cache entry for this device; or NULL if the device
+ * is a local radio controller.
+ * @mac_addr: the EUI-48 address of this device.
+ * @dev_addr: the current DevAddr used by this device.
+ * @beacon_slot: the slot number the beacon is using.
+ * @streams: bitmap of streams allocated to reservations targeted at
+ * this device. For an RC, this is the streams allocated for
+ * reservations targeted at DevAddrs.
+ *
+ * A UWB device may either by a neighbor or part of a local radio
+ * controller.
+ */
+struct uwb_dev {
+ struct mutex mutex;
+ struct list_head list_node;
+ struct device dev;
+ struct uwb_rc *rc; /* radio controller */
+ struct uwb_beca_e *bce; /* Beacon Cache Entry */
+
+ struct uwb_mac_addr mac_addr;
+ struct uwb_dev_addr dev_addr;
+ int beacon_slot;
+ DECLARE_BITMAP(streams, UWB_NUM_STREAMS);
+};
+#define to_uwb_dev(d) container_of(d, struct uwb_dev, dev)
+
+/**
+ * UWB HWA/WHCI Radio Control {Command|Event} Block context IDs
+ *
+ * RC[CE]Bs have a 'context ID' field that matches the command with
+ * the event received to confirm it.
+ *
+ * Maximum number of context IDs
+ */
+enum { UWB_RC_CTX_MAX = 256 };
+
+
+/** Notification chain head for UWB generated events to listeners */
+struct uwb_notifs_chain {
+ struct list_head list;
+ struct mutex mutex;
+};
+
+/**
+ * struct uwb_mas_bm - a bitmap of all MAS in a superframe
+ * @bm: a bitmap of length #UWB_NUM_MAS
+ */
+struct uwb_mas_bm {
+ DECLARE_BITMAP(bm, UWB_NUM_MAS);
+};
+
+/**
+ * uwb_rsv_state - UWB Reservation state.
+ *
+ * NONE - reservation is not active (no DRP IE being transmitted).
+ *
+ * Owner reservation states:
+ *
+ * INITIATED - owner has sent an initial DRP request.
+ * PENDING - target responded with pending Reason Code.
+ * MODIFIED - reservation manager is modifying an established
+ * reservation with a different MAS allocation.
+ * ESTABLISHED - the reservation has been successfully negotiated.
+ *
+ * Target reservation states:
+ *
+ * DENIED - request is denied.
+ * ACCEPTED - request is accepted.
+ * PENDING - PAL has yet to make a decision to whether to accept or
+ * deny.
+ *
+ * FIXME: further target states TBD.
+ */
+enum uwb_rsv_state {
+ UWB_RSV_STATE_NONE,
+ UWB_RSV_STATE_O_INITIATED,
+ UWB_RSV_STATE_O_PENDING,
+ UWB_RSV_STATE_O_MODIFIED,
+ UWB_RSV_STATE_O_ESTABLISHED,
+ UWB_RSV_STATE_T_ACCEPTED,
+ UWB_RSV_STATE_T_DENIED,
+ UWB_RSV_STATE_T_PENDING,
+
+ UWB_RSV_STATE_LAST,
+};
+
+enum uwb_rsv_target_type {
+ UWB_RSV_TARGET_DEV,
+ UWB_RSV_TARGET_DEVADDR,
+};
+
+/**
+ * struct uwb_rsv_target - the target of a reservation.
+ *
+ * Reservations unicast and targeted at a single device
+ * (UWB_RSV_TARGET_DEV); or (e.g., in the case of WUSB) targeted at a
+ * specific (private) DevAddr (UWB_RSV_TARGET_DEVADDR).
+ */
+struct uwb_rsv_target {
+ enum uwb_rsv_target_type type;
+ union {
+ struct uwb_dev *dev;
+ struct uwb_dev_addr devaddr;
+ };
+};
+
+/*
+ * Number of streams reserved for reservations targeted at DevAddrs.
+ */
+#define UWB_NUM_GLOBAL_STREAMS 1
+
+typedef void (*uwb_rsv_cb_f)(struct uwb_rsv *rsv);
+
+/**
+ * struct uwb_rsv - a DRP reservation
+ *
+ * Data structure management:
+ *
+ * @rc: the radio controller this reservation is for
+ * (as target or owner)
+ * @rc_node: a list node for the RC
+ * @pal_node: a list node for the PAL
+ *
+ * Owner and target parameters:
+ *
+ * @owner: the UWB device owning this reservation
+ * @target: the target UWB device
+ * @type: reservation type
+ *
+ * Owner parameters:
+ *
+ * @max_mas: maxiumum number of MAS
+ * @min_mas: minimum number of MAS
+ * @sparsity: owner selected sparsity
+ * @is_multicast: true iff multicast
+ *
+ * @callback: callback function when the reservation completes
+ * @pal_priv: private data for the PAL making the reservation
+ *
+ * Reservation status:
+ *
+ * @status: negotiation status
+ * @stream: stream index allocated for this reservation
+ * @mas: reserved MAS
+ * @drp_ie: the DRP IE
+ * @ie_valid: true iff the DRP IE matches the reservation parameters
+ *
+ * DRP reservations are uniquely identified by the owner, target and
+ * stream index. However, when using a DevAddr as a target (e.g., for
+ * a WUSB cluster reservation) the responses may be received from
+ * devices with different DevAddrs. In this case, reservations are
+ * uniquely identified by just the stream index. A number of stream
+ * indexes (UWB_NUM_GLOBAL_STREAMS) are reserved for this.
+ */
+struct uwb_rsv {
+ struct uwb_rc *rc;
+ struct list_head rc_node;
+ struct list_head pal_node;
+
+ struct uwb_dev *owner;
+ struct uwb_rsv_target target;
+ enum uwb_drp_type type;
+ int max_mas;
+ int min_mas;
+ int sparsity;
+ bool is_multicast;
+
+ uwb_rsv_cb_f callback;
+ void *pal_priv;
+
+ enum uwb_rsv_state state;
+ u8 stream;
+ struct uwb_mas_bm mas;
+ struct uwb_ie_drp *drp_ie;
+ bool ie_valid;
+ struct timer_list timer;
+ bool expired;
+};
+
+static const
+struct uwb_mas_bm uwb_mas_bm_zero = { .bm = { 0 } };
+
+static inline void uwb_mas_bm_copy_le(void *dst, const struct uwb_mas_bm *mas)
+{
+ bitmap_copy_le(dst, mas->bm, UWB_NUM_MAS);
+}
+
+/**
+ * struct uwb_drp_avail - a radio controller's view of MAS usage
+ * @global: MAS unused by neighbors (excluding reservations targetted
+ * or owned by the local radio controller) or the beaon period
+ * @local: MAS unused by local established reservations
+ * @pending: MAS unused by local pending reservations
+ * @ie: DRP Availability IE to be included in the beacon
+ * @ie_valid: true iff @ie is valid and does not need to regenerated from
+ * @global and @local
+ *
+ * Each radio controller maintains a view of MAS usage or
+ * availability. MAS available for a new reservation are determined
+ * from the intersection of @global, @local, and @pending.
+ *
+ * The radio controller must transmit a DRP Availability IE that's the
+ * intersection of @global and @local.
+ *
+ * A set bit indicates the MAS is unused and available.
+ *
+ * rc->rsvs_mutex should be held before accessing this data structure.
+ *
+ * [ECMA-368] section 17.4.3.
+ */
+struct uwb_drp_avail {
+ DECLARE_BITMAP(global, UWB_NUM_MAS);
+ DECLARE_BITMAP(local, UWB_NUM_MAS);
+ DECLARE_BITMAP(pending, UWB_NUM_MAS);
+ struct uwb_ie_drp_avail ie;
+ bool ie_valid;
+};
+
+
+const char *uwb_rsv_state_str(enum uwb_rsv_state state);
+const char *uwb_rsv_type_str(enum uwb_drp_type type);
+
+struct uwb_rsv *uwb_rsv_create(struct uwb_rc *rc, uwb_rsv_cb_f cb,
+ void *pal_priv);
+void uwb_rsv_destroy(struct uwb_rsv *rsv);
+
+int uwb_rsv_establish(struct uwb_rsv *rsv);
+int uwb_rsv_modify(struct uwb_rsv *rsv,
+ int max_mas, int min_mas, int sparsity);
+void uwb_rsv_terminate(struct uwb_rsv *rsv);
+
+void uwb_rsv_accept(struct uwb_rsv *rsv, uwb_rsv_cb_f cb, void *pal_priv);
+
+/**
+ * Radio Control Interface instance
+ *
+ *
+ * Life cycle rules: those of the UWB Device.
+ *
+ * @index: an index number for this radio controller, as used in the
+ * device name.
+ * @version: version of protocol supported by this device
+ * @priv: Backend implementation; rw with uwb_dev.dev.sem taken.
+ * @cmd: Backend implementation to execute commands; rw and call
+ * only with uwb_dev.dev.sem taken.
+ * @reset: Hardware reset of radio controller and any PAL controllers.
+ * @filter: Backend implementation to manipulate data to and from device
+ * to be compliant to specification assumed by driver (WHCI
+ * 0.95).
+ *
+ * uwb_dev.dev.mutex is used to execute commands and update
+ * the corresponding structures; can't use a spinlock
+ * because rc->cmd() can sleep.
+ * @ies: This is a dynamically allocated array cacheing the
+ * IEs (settable by the host) that the beacon of this
+ * radio controller is currently sending.
+ *
+ * In reality, we store here the full command we set to
+ * the radio controller (which is basically a command
+ * prefix followed by all the IEs the beacon currently
+ * contains). This way we don't have to realloc and
+ * memcpy when setting it.
+ *
+ * We set this up in uwb_rc_ie_setup(), where we alloc
+ * this struct, call get_ie() [so we know which IEs are
+ * currently being sent, if any].
+ *
+ * @ies_capacity:Amount of space (in bytes) allocated in @ies. The
+ * amount used is given by sizeof(*ies) plus ies->wIELength
+ * (which is a little endian quantity all the time).
+ * @ies_mutex: protect the IE cache
+ * @dbg: information for the debug interface
+ */
+struct uwb_rc {
+ struct uwb_dev uwb_dev;
+ int index;
+ u16 version;
+
+ struct module *owner;
+ void *priv;
+ int (*start)(struct uwb_rc *rc);
+ void (*stop)(struct uwb_rc *rc);
+ int (*cmd)(struct uwb_rc *, const struct uwb_rccb *, size_t);
+ int (*reset)(struct uwb_rc *rc);
+ int (*filter_cmd)(struct uwb_rc *, struct uwb_rccb **, size_t *);
+ int (*filter_event)(struct uwb_rc *, struct uwb_rceb **, const size_t,
+ size_t *, size_t *);
+
+ spinlock_t neh_lock; /* protects neh_* and ctx_* */
+ struct list_head neh_list; /* Open NE handles */
+ unsigned long ctx_bm[UWB_RC_CTX_MAX / 8 / sizeof(unsigned long)];
+ u8 ctx_roll;
+
+ int beaconing; /* Beaconing state [channel number] */
+ int scanning;
+ enum uwb_scan_type scan_type:3;
+ unsigned ready:1;
+ struct uwb_notifs_chain notifs_chain;
+
+ struct uwb_drp_avail drp_avail;
+ struct list_head reservations;
+ struct mutex rsvs_mutex;
+ struct workqueue_struct *rsv_workq;
+ struct work_struct rsv_update_work;
+
+ struct mutex ies_mutex;
+ struct uwb_rc_cmd_set_ie *ies;
+ size_t ies_capacity;
+
+ spinlock_t pal_lock;
+ struct list_head pals;
+
+ struct uwb_dbg *dbg;
+};
+
+
+/**
+ * struct uwb_pal - a UWB PAL
+ * @name: descriptive name for this PAL (wushc, wlp, etc.).
+ * @device: a device for the PAL. Used to link the PAL and the radio
+ * controller in sysfs.
+ * @new_rsv: called when a peer requests a reservation (may be NULL if
+ * the PAL cannot accept reservation requests).
+ *
+ * A Protocol Adaptation Layer (PAL) is a user of the WiMedia UWB
+ * radio platform (e.g., WUSB, WLP or Bluetooth UWB AMP).
+ *
+ * The PALs using a radio controller must register themselves to
+ * permit the UWB stack to coordinate usage of the radio between the
+ * various PALs or to allow PALs to response to certain requests from
+ * peers.
+ *
+ * A struct uwb_pal should be embedded in a containing structure
+ * belonging to the PAL and initialized with uwb_pal_init()). Fields
+ * should be set appropriately by the PAL before registering the PAL
+ * with uwb_pal_register().
+ */
+struct uwb_pal {
+ struct list_head node;
+ const char *name;
+ struct device *device;
+ void (*new_rsv)(struct uwb_rsv *rsv);
+};
+
+void uwb_pal_init(struct uwb_pal *pal);
+int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal);
+void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal);
+
+/*
+ * General public API
+ *
+ * This API can be used by UWB device drivers or by those implementing
+ * UWB Radio Controllers
+ */
+struct uwb_dev *uwb_dev_get_by_devaddr(struct uwb_rc *rc,
+ const struct uwb_dev_addr *devaddr);
+struct uwb_dev *uwb_dev_get_by_rc(struct uwb_dev *, struct uwb_rc *);
+static inline void uwb_dev_get(struct uwb_dev *uwb_dev)
+{
+ get_device(&uwb_dev->dev);
+}
+static inline void uwb_dev_put(struct uwb_dev *uwb_dev)
+{
+ put_device(&uwb_dev->dev);
+}
+struct uwb_dev *uwb_dev_try_get(struct uwb_rc *rc, struct uwb_dev *uwb_dev);
+
+/**
+ * Callback function for 'uwb_{dev,rc}_foreach()'.
+ *
+ * @dev: Linux device instance
+ * 'uwb_dev = container_of(dev, struct uwb_dev, dev)'
+ * @priv: Data passed by the caller to 'uwb_{dev,rc}_foreach()'.
+ *
+ * @returns: 0 to continue the iterations, any other val to stop
+ * iterating and return the value to the caller of
+ * _foreach().
+ */
+typedef int (*uwb_dev_for_each_f)(struct device *dev, void *priv);
+int uwb_dev_for_each(struct uwb_rc *rc, uwb_dev_for_each_f func, void *priv);
+
+struct uwb_rc *uwb_rc_alloc(void);
+struct uwb_rc *uwb_rc_get_by_dev(const struct uwb_dev_addr *);
+struct uwb_rc *uwb_rc_get_by_grandpa(const struct device *);
+void uwb_rc_put(struct uwb_rc *rc);
+
+typedef void (*uwb_rc_cmd_cb_f)(struct uwb_rc *rc, void *arg,
+ struct uwb_rceb *reply, ssize_t reply_size);
+
+int uwb_rc_cmd_async(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ u8 expected_type, u16 expected_event,
+ uwb_rc_cmd_cb_f cb, void *arg);
+ssize_t uwb_rc_cmd(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ struct uwb_rceb *reply, size_t reply_size);
+ssize_t uwb_rc_vcmd(struct uwb_rc *rc, const char *cmd_name,
+ struct uwb_rccb *cmd, size_t cmd_size,
+ u8 expected_type, u16 expected_event,
+ struct uwb_rceb **preply);
+ssize_t uwb_rc_get_ie(struct uwb_rc *, struct uwb_rc_evt_get_ie **);
+int uwb_bg_joined(struct uwb_rc *rc);
+
+size_t __uwb_addr_print(char *, size_t, const unsigned char *, int);
+
+int uwb_rc_dev_addr_set(struct uwb_rc *, const struct uwb_dev_addr *);
+int uwb_rc_dev_addr_get(struct uwb_rc *, struct uwb_dev_addr *);
+int uwb_rc_mac_addr_set(struct uwb_rc *, const struct uwb_mac_addr *);
+int uwb_rc_mac_addr_get(struct uwb_rc *, struct uwb_mac_addr *);
+int __uwb_mac_addr_assigned_check(struct device *, void *);
+int __uwb_dev_addr_assigned_check(struct device *, void *);
+
+/* Print in @buf a pretty repr of @addr */
+static inline size_t uwb_dev_addr_print(char *buf, size_t buf_size,
+ const struct uwb_dev_addr *addr)
+{
+ return __uwb_addr_print(buf, buf_size, addr->data, 0);
+}
+
+/* Print in @buf a pretty repr of @addr */
+static inline size_t uwb_mac_addr_print(char *buf, size_t buf_size,
+ const struct uwb_mac_addr *addr)
+{
+ return __uwb_addr_print(buf, buf_size, addr->data, 1);
+}
+
+/* @returns 0 if device addresses @addr2 and @addr1 are equal */
+static inline int uwb_dev_addr_cmp(const struct uwb_dev_addr *addr1,
+ const struct uwb_dev_addr *addr2)
+{
+ return memcmp(addr1, addr2, sizeof(*addr1));
+}
+
+/* @returns 0 if MAC addresses @addr2 and @addr1 are equal */
+static inline int uwb_mac_addr_cmp(const struct uwb_mac_addr *addr1,
+ const struct uwb_mac_addr *addr2)
+{
+ return memcmp(addr1, addr2, sizeof(*addr1));
+}
+
+/* @returns !0 if a MAC @addr is a broadcast address */
+static inline int uwb_mac_addr_bcast(const struct uwb_mac_addr *addr)
+{
+ struct uwb_mac_addr bcast = {
+ .data = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }
+ };
+ return !uwb_mac_addr_cmp(addr, &bcast);
+}
+
+/* @returns !0 if a MAC @addr is all zeroes*/
+static inline int uwb_mac_addr_unset(const struct uwb_mac_addr *addr)
+{
+ struct uwb_mac_addr unset = {
+ .data = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }
+ };
+ return !uwb_mac_addr_cmp(addr, &unset);
+}
+
+/* @returns !0 if the address is in use. */
+static inline unsigned __uwb_dev_addr_assigned(struct uwb_rc *rc,
+ struct uwb_dev_addr *addr)
+{
+ return uwb_dev_for_each(rc, __uwb_dev_addr_assigned_check, addr);
+}
+
+/*
+ * UWB Radio Controller API
+ *
+ * This API is used (in addition to the general API) to implement UWB
+ * Radio Controllers.
+ */
+void uwb_rc_init(struct uwb_rc *);
+int uwb_rc_add(struct uwb_rc *, struct device *dev, void *rc_priv);
+void uwb_rc_rm(struct uwb_rc *);
+void uwb_rc_neh_grok(struct uwb_rc *, void *, size_t);
+void uwb_rc_neh_error(struct uwb_rc *, int);
+void uwb_rc_reset_all(struct uwb_rc *rc);
+
+/**
+ * uwb_rsv_is_owner - is the owner of this reservation the RC?
+ * @rsv: the reservation
+ */
+static inline bool uwb_rsv_is_owner(struct uwb_rsv *rsv)
+{
+ return rsv->owner == &rsv->rc->uwb_dev;
+}
+
+/**
+ * Events generated by UWB that can be passed to any listeners
+ *
+ * Higher layers can register callback functions with the radio
+ * controller using uwb_notifs_register(). The radio controller
+ * maintains a list of all registered handlers and will notify all
+ * nodes when an event occurs.
+ */
+enum uwb_notifs {
+ UWB_NOTIF_BG_JOIN = 0, /* radio controller joined a beacon group */
+ UWB_NOTIF_BG_LEAVE = 1, /* radio controller left a beacon group */
+ UWB_NOTIF_ONAIR,
+ UWB_NOTIF_OFFAIR,
+};
+
+/* Callback function registered with UWB */
+struct uwb_notifs_handler {
+ struct list_head list_node;
+ void (*cb)(void *, struct uwb_dev *, enum uwb_notifs);
+ void *data;
+};
+
+int uwb_notifs_register(struct uwb_rc *, struct uwb_notifs_handler *);
+int uwb_notifs_deregister(struct uwb_rc *, struct uwb_notifs_handler *);
+
+
+/**
+ * UWB radio controller Event Size Entry (for creating entry tables)
+ *
+ * WUSB and WHCI define events and notifications, and they might have
+ * fixed or variable size.
+ *
+ * Each event/notification has a size which is not necessarily known
+ * in advance based on the event code. As well, vendor specific
+ * events/notifications will have a size impossible to determine
+ * unless we know about the device's specific details.
+ *
+ * It was way too smart of the spec writers not to think that it would
+ * be impossible for a generic driver to skip over vendor specific
+ * events/notifications if there are no LENGTH fields in the HEADER of
+ * each message...the transaction size cannot be counted on as the
+ * spec does not forbid to pack more than one event in a single
+ * transaction.
+ *
+ * Thus, we guess sizes with tables (or for events, when you know the
+ * size ahead of time you can use uwb_rc_neh_extra_size*()). We
+ * register tables with the known events and their sizes, and then we
+ * traverse those tables. For those with variable length, we provide a
+ * way to lookup the size inside the event/notification's
+ * payload. This allows device-specific event size tables to be
+ * registered.
+ *
+ * @size: Size of the payload
+ *
+ * @offset: if != 0, at offset @offset-1 starts a field with a length
+ * that has to be added to @size. The format of the field is
+ * given by @type.
+ *
+ * @type: Type and length of the offset field. Most common is LE 16
+ * bits (that's why that is zero); others are there mostly to
+ * cover for bugs and weirdos.
+ */
+struct uwb_est_entry {
+ size_t size;
+ unsigned offset;
+ enum { UWB_EST_16 = 0, UWB_EST_8 = 1 } type;
+};
+
+int uwb_est_register(u8 type, u8 code_high, u16 vendor, u16 product,
+ const struct uwb_est_entry *, size_t entries);
+int uwb_est_unregister(u8 type, u8 code_high, u16 vendor, u16 product,
+ const struct uwb_est_entry *, size_t entries);
+ssize_t uwb_est_find_size(struct uwb_rc *rc, const struct uwb_rceb *rceb,
+ size_t len);
+
+/* -- Misc */
+
+enum {
+ EDC_MAX_ERRORS = 10,
+ EDC_ERROR_TIMEFRAME = HZ,
+};
+
+/* error density counter */
+struct edc {
+ unsigned long timestart;
+ u16 errorcount;
+};
+
+static inline
+void edc_init(struct edc *edc)
+{
+ edc->timestart = jiffies;
+}
+
+/* Called when an error occured.
+ * This is way to determine if the number of acceptable errors per time
+ * period has been exceeded. It is not accurate as there are cases in which
+ * this scheme will not work, for example if there are periodic occurences
+ * of errors that straddle updates to the start time. This scheme is
+ * sufficient for our usage.
+ *
+ * @returns 1 if maximum acceptable errors per timeframe has been exceeded.
+ */
+static inline int edc_inc(struct edc *err_hist, u16 max_err, u16 timeframe)
+{
+ unsigned long now;
+
+ now = jiffies;
+ if (now - err_hist->timestart > timeframe) {
+ err_hist->errorcount = 1;
+ err_hist->timestart = now;
+ } else if (++err_hist->errorcount > max_err) {
+ err_hist->errorcount = 0;
+ err_hist->timestart = now;
+ return 1;
+ }
+ return 0;
+}
+
+
+/* Information Element handling */
+
+/* For representing the state of writing to a buffer when iterating */
+struct uwb_buf_ctx {
+ char *buf;
+ size_t bytes, size;
+};
+
+typedef int (*uwb_ie_f)(struct uwb_dev *, const struct uwb_ie_hdr *,
+ size_t, void *);
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
+ssize_t uwb_ie_for_each(struct uwb_dev *uwb_dev, uwb_ie_f fn, void *data,
+ const void *buf, size_t size);
+int uwb_ie_dump_hex(struct uwb_dev *, const struct uwb_ie_hdr *,
+ size_t, void *);
+int uwb_rc_set_ie(struct uwb_rc *, struct uwb_rc_cmd_set_ie *);
+struct uwb_ie_hdr *uwb_ie_next(void **ptr, size_t *len);
+
+
+/*
+ * Transmission statistics
+ *
+ * UWB uses LQI and RSSI (one byte values) for reporting radio signal
+ * strength and line quality indication. We do quick and dirty
+ * averages of those. They are signed values, btw.
+ *
+ * For 8 bit quantities, we keep the min, the max, an accumulator
+ * (@sigma) and a # of samples. When @samples gets to 255, we compute
+ * the average (@sigma / @samples), place it in @sigma and reset
+ * @samples to 1 (so we use it as the first sample).
+ *
+ * Now, statistically speaking, probably I am kicking the kidneys of
+ * some books I have in my shelves collecting dust, but I just want to
+ * get an approx, not the Nobel.
+ *
+ * LOCKING: there is no locking per se, but we try to keep a lockless
+ * schema. Only _add_samples() modifies the values--as long as you
+ * have other locking on top that makes sure that no two calls of
+ * _add_sample() happen at the same time, then we are fine. Now, for
+ * resetting the values we just set @samples to 0 and that makes the
+ * next _add_sample() to start with defaults. Reading the values in
+ * _show() currently can race, so you need to make sure the calls are
+ * under the same lock that protects calls to _add_sample(). FIXME:
+ * currently unlocked (It is not ultraprecise but does the trick. Bite
+ * me).
+ */
+struct stats {
+ s8 min, max;
+ s16 sigma;
+ atomic_t samples;
+};
+
+static inline
+void stats_init(struct stats *stats)
+{
+ atomic_set(&stats->samples, 0);
+ wmb();
+}
+
+static inline
+void stats_add_sample(struct stats *stats, s8 sample)
+{
+ s8 min, max;
+ s16 sigma;
+ unsigned samples = atomic_read(&stats->samples);
+ if (samples == 0) { /* it was zero before, so we initialize */
+ min = 127;
+ max = -128;
+ sigma = 0;
+ } else {
+ min = stats->min;
+ max = stats->max;
+ sigma = stats->sigma;
+ }
+
+ if (sample < min) /* compute new values */
+ min = sample;
+ else if (sample > max)
+ max = sample;
+ sigma += sample;
+
+ stats->min = min; /* commit */
+ stats->max = max;
+ stats->sigma = sigma;
+ if (atomic_add_return(1, &stats->samples) > 255) {
+ /* wrapped around! reset */
+ stats->sigma = sigma / 256;
+ atomic_set(&stats->samples, 1);
+ }
+}
+
+static inline ssize_t stats_show(struct stats *stats, char *buf)
+{
+ int min, max, avg;
+ int samples = atomic_read(&stats->samples);
+ if (samples == 0)
+ min = max = avg = 0;
+ else {
+ min = stats->min;
+ max = stats->max;
+ avg = stats->sigma / samples;
+ }
+ return scnprintf(buf, PAGE_SIZE, "%d %d %d\n", min, max, avg);
+}
+
+static inline ssize_t stats_store(struct stats *stats, const char *buf,
+ size_t size)
+{
+ stats_init(stats);
+ return size;
+}
+
+#endif /* #ifndef __LINUX__UWB_H__ */
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Debug interface commands
+ *
+ * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef __LINUX__UWB__DEBUG_CMD_H__
+#define __LINUX__UWB__DEBUG_CMD_H__
+
+#include <linux/types.h>
+
+/*
+ * Debug interface commands
+ *
+ * UWB_DBG_CMD_RSV_ESTABLISH: Establish a new unicast reservation.
+ *
+ * UWB_DBG_CMD_RSV_TERMINATE: Terminate the Nth reservation.
+ */
+
+enum uwb_dbg_cmd_type {
+ UWB_DBG_CMD_RSV_ESTABLISH = 1,
+ UWB_DBG_CMD_RSV_TERMINATE = 2,
+};
+
+struct uwb_dbg_cmd_rsv_establish {
+ __u8 target[6];
+ __u8 type;
+ __u16 max_mas;
+ __u16 min_mas;
+ __u8 sparsity;
+};
+
+struct uwb_dbg_cmd_rsv_terminate {
+ int index;
+};
+
+struct uwb_dbg_cmd {
+ __u32 type;
+ union {
+ struct uwb_dbg_cmd_rsv_establish rsv_establish;
+ struct uwb_dbg_cmd_rsv_terminate rsv_terminate;
+ };
+};
+
+#endif /* #ifndef __LINUX__UWB__DEBUG_CMD_H__ */
--- /dev/null
+/*
+ * Ultra Wide Band
+ * Debug Support
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: doc
+ * Invoke like:
+ *
+ * #define D_LOCAL 4
+ * #include <linux/uwb/debug.h>
+ *
+ * At the end of your include files.
+ */
+#include <linux/types.h>
+
+struct device;
+extern void dump_bytes(struct device *dev, const void *_buf, size_t rsize);
+
+/* Master debug switch; !0 enables, 0 disables */
+#define D_MASTER (!0)
+
+/* Local (per-file) debug switch; #define before #including */
+#ifndef D_LOCAL
+#define D_LOCAL 0
+#endif
+
+#undef __d_printf
+#undef d_fnstart
+#undef d_fnend
+#undef d_printf
+#undef d_dump
+
+#define __d_printf(l, _tag, _dev, f, a...) \
+do { \
+ struct device *__dev = (_dev); \
+ if (D_MASTER && D_LOCAL >= (l)) { \
+ char __head[64] = ""; \
+ if (_dev != NULL) { \
+ if ((unsigned long)__dev < 4096) \
+ printk(KERN_ERR "E: Corrupt dev %p\n", \
+ __dev); \
+ else \
+ snprintf(__head, sizeof(__head), \
+ "%s %s: ", \
+ dev_driver_string(__dev), \
+ __dev->bus_id); \
+ } \
+ printk(KERN_ERR "%s%s" _tag ": " f, __head, \
+ __func__, ## a); \
+ } \
+} while (0 && _dev)
+
+#define d_fnstart(l, _dev, f, a...) \
+ __d_printf(l, " FNSTART", _dev, f, ## a)
+#define d_fnend(l, _dev, f, a...) \
+ __d_printf(l, " FNEND", _dev, f, ## a)
+#define d_printf(l, _dev, f, a...) \
+ __d_printf(l, "", _dev, f, ## a)
+#define d_dump(l, _dev, ptr, size) \
+do { \
+ struct device *__dev = _dev; \
+ if (D_MASTER && D_LOCAL >= (l)) \
+ dump_bytes(__dev, ptr, size); \
+} while (0 && _dev)
+#define d_test(l) (D_MASTER && D_LOCAL >= (l))
--- /dev/null
+/*
+ * Ultra Wide Band
+ * UWB Standard definitions
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * All these definitions are based on the ECMA-368 standard.
+ *
+ * Note all definitions are Little Endian in the wire, and we will
+ * convert them to host order before operating on the bitfields (that
+ * yes, we use extensively).
+ */
+
+#ifndef __LINUX__UWB_SPEC_H__
+#define __LINUX__UWB_SPEC_H__
+
+#include <linux/types.h>
+#include <linux/bitmap.h>
+
+#define i1480_FW 0x00000303
+/* #define i1480_FW 0x00000302 */
+
+/**
+ * Number of Medium Access Slots in a superframe.
+ *
+ * UWB divides time in SuperFrames, each one divided in 256 pieces, or
+ * Medium Access Slots. See MBOA MAC[5.4.5] for details. The MAS is the
+ * basic bandwidth allocation unit in UWB.
+ */
+enum { UWB_NUM_MAS = 256 };
+
+/**
+ * Number of Zones in superframe.
+ *
+ * UWB divides the superframe into zones with numbering starting from BPST.
+ * See MBOA MAC[16.8.6]
+ */
+enum { UWB_NUM_ZONES = 16 };
+
+/*
+ * Number of MAS in a zone.
+ */
+#define UWB_MAS_PER_ZONE (UWB_NUM_MAS / UWB_NUM_ZONES)
+
+/*
+ * Number of streams per DRP reservation between a pair of devices.
+ *
+ * [ECMA-368] section 16.8.6.
+ */
+enum { UWB_NUM_STREAMS = 8 };
+
+/*
+ * mMasLength
+ *
+ * The length of a MAS in microseconds.
+ *
+ * [ECMA-368] section 17.16.
+ */
+enum { UWB_MAS_LENGTH_US = 256 };
+
+/*
+ * mBeaconSlotLength
+ *
+ * The length of the beacon slot in microseconds.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_BEACON_SLOT_LENGTH_US = 85 };
+
+/*
+ * mMaxLostBeacons
+ *
+ * The number beacons missing in consecutive superframes before a
+ * device can be considered as unreachable.
+ *
+ * [ECMA-368] section 17.16
+ */
+enum { UWB_MAX_LOST_BEACONS = 3 };
+
+/*
+ * Length of a superframe in microseconds.
+ */
+#define UWB_SUPERFRAME_LENGTH_US (UWB_MAS_LENGTH_US * UWB_NUM_MAS)
+
+/**
+ * UWB MAC address
+ *
+ * It is *imperative* that this struct is exactly 6 packed bytes (as
+ * it is also used to define headers sent down and up the wire/radio).
+ */
+struct uwb_mac_addr {
+ u8 data[6];
+} __attribute__((packed));
+
+
+/**
+ * UWB device address
+ *
+ * It is *imperative* that this struct is exactly 6 packed bytes (as
+ * it is also used to define headers sent down and up the wire/radio).
+ */
+struct uwb_dev_addr {
+ u8 data[2];
+} __attribute__((packed));
+
+
+/**
+ * Types of UWB addresses
+ *
+ * Order matters (by size).
+ */
+enum uwb_addr_type {
+ UWB_ADDR_DEV = 0,
+ UWB_ADDR_MAC = 1,
+};
+
+
+/** Size of a char buffer for printing a MAC/device address */
+enum { UWB_ADDR_STRSIZE = 32 };
+
+
+/** UWB WiMedia protocol IDs. */
+enum uwb_prid {
+ UWB_PRID_WLP_RESERVED = 0x0000,
+ UWB_PRID_WLP = 0x0001,
+ UWB_PRID_WUSB_BOT = 0x0010,
+ UWB_PRID_WUSB = 0x0010,
+ UWB_PRID_WUSB_TOP = 0x001F,
+};
+
+
+/** PHY Rate (MBOA MAC[7.8.12, Table 61]) */
+enum uwb_phy_rate {
+ UWB_PHY_RATE_53 = 0,
+ UWB_PHY_RATE_80,
+ UWB_PHY_RATE_106,
+ UWB_PHY_RATE_160,
+ UWB_PHY_RATE_200,
+ UWB_PHY_RATE_320,
+ UWB_PHY_RATE_400,
+ UWB_PHY_RATE_480,
+ UWB_PHY_RATE_INVALID
+};
+
+
+/**
+ * Different ways to scan (MBOA MAC[6.2.2, Table 8], WUSB[Table 8-78])
+ */
+enum uwb_scan_type {
+ UWB_SCAN_ONLY = 0,
+ UWB_SCAN_OUTSIDE_BP,
+ UWB_SCAN_WHILE_INACTIVE,
+ UWB_SCAN_DISABLED,
+ UWB_SCAN_ONLY_STARTTIME,
+ UWB_SCAN_TOP
+};
+
+
+/** ACK Policy types (MBOA MAC[7.2.1.3]) */
+enum uwb_ack_pol {
+ UWB_ACK_NO = 0,
+ UWB_ACK_INM = 1,
+ UWB_ACK_B = 2,
+ UWB_ACK_B_REQ = 3,
+};
+
+
+/** DRP reservation types ([ECMA-368 table 106) */
+enum uwb_drp_type {
+ UWB_DRP_TYPE_ALIEN_BP = 0,
+ UWB_DRP_TYPE_HARD,
+ UWB_DRP_TYPE_SOFT,
+ UWB_DRP_TYPE_PRIVATE,
+ UWB_DRP_TYPE_PCA,
+};
+
+
+/** DRP Reason Codes ([ECMA-368] table 107) */
+enum uwb_drp_reason {
+ UWB_DRP_REASON_ACCEPTED = 0,
+ UWB_DRP_REASON_CONFLICT,
+ UWB_DRP_REASON_PENDING,
+ UWB_DRP_REASON_DENIED,
+ UWB_DRP_REASON_MODIFIED,
+};
+
+/**
+ * DRP Notification Reason Codes (WHCI 0.95 [3.1.4.9])
+ */
+enum uwb_drp_notif_reason {
+ UWB_DRP_NOTIF_DRP_IE_RCVD = 0,
+ UWB_DRP_NOTIF_CONFLICT,
+ UWB_DRP_NOTIF_TERMINATE,
+};
+
+
+/** Allocation of MAS slots in a DRP request MBOA MAC[7.8.7] */
+struct uwb_drp_alloc {
+ __le16 zone_bm;
+ __le16 mas_bm;
+} __attribute__((packed));
+
+
+/** General MAC Header format (ECMA-368[16.2]) */
+struct uwb_mac_frame_hdr {
+ __le16 Frame_Control;
+ struct uwb_dev_addr DestAddr;
+ struct uwb_dev_addr SrcAddr;
+ __le16 Sequence_Control;
+ __le16 Access_Information;
+} __attribute__((packed));
+
+
+/**
+ * uwb_beacon_frame - a beacon frame including MAC headers
+ *
+ * [ECMA] section 16.3.
+ */
+struct uwb_beacon_frame {
+ struct uwb_mac_frame_hdr hdr;
+ struct uwb_mac_addr Device_Identifier; /* may be a NULL EUI-48 */
+ u8 Beacon_Slot_Number;
+ u8 Device_Control;
+ u8 IEData[];
+} __attribute__((packed));
+
+
+/** Information Element codes (MBOA MAC[T54]) */
+enum uwb_ie {
+ UWB_PCA_AVAILABILITY = 2,
+ UWB_IE_DRP_AVAILABILITY = 8,
+ UWB_IE_DRP = 9,
+ UWB_BP_SWITCH_IE = 11,
+ UWB_MAC_CAPABILITIES_IE = 12,
+ UWB_PHY_CAPABILITIES_IE = 13,
+ UWB_APP_SPEC_PROBE_IE = 15,
+ UWB_IDENTIFICATION_IE = 19,
+ UWB_MASTER_KEY_ID_IE = 20,
+ UWB_IE_WLP = 250, /* WiMedia Logical Link Control Protocol WLP 0.99 */
+ UWB_APP_SPEC_IE = 255,
+};
+
+
+/**
+ * Header common to all Information Elements (IEs)
+ */
+struct uwb_ie_hdr {
+ u8 element_id; /* enum uwb_ie */
+ u8 length;
+} __attribute__((packed));
+
+
+/** Dynamic Reservation Protocol IE (MBOA MAC[7.8.6]) */
+struct uwb_ie_drp {
+ struct uwb_ie_hdr hdr;
+ __le16 drp_control;
+ struct uwb_dev_addr dev_addr;
+ struct uwb_drp_alloc allocs[];
+} __attribute__((packed));
+
+static inline int uwb_ie_drp_type(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 0) & 0x7;
+}
+
+static inline int uwb_ie_drp_stream_index(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 3) & 0x7;
+}
+
+static inline int uwb_ie_drp_reason_code(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 6) & 0x7;
+}
+
+static inline int uwb_ie_drp_status(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 9) & 0x1;
+}
+
+static inline int uwb_ie_drp_owner(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 10) & 0x1;
+}
+
+static inline int uwb_ie_drp_tiebreaker(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 11) & 0x1;
+}
+
+static inline int uwb_ie_drp_unsafe(struct uwb_ie_drp *ie)
+{
+ return (le16_to_cpu(ie->drp_control) >> 12) & 0x1;
+}
+
+static inline void uwb_ie_drp_set_type(struct uwb_ie_drp *ie, enum uwb_drp_type type)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x7 << 0)) | (type << 0);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_stream_index(struct uwb_ie_drp *ie, int stream_index)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x7 << 3)) | (stream_index << 3);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_reason_code(struct uwb_ie_drp *ie,
+ enum uwb_drp_reason reason_code)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (ie->drp_control & ~(0x7 << 6)) | (reason_code << 6);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_status(struct uwb_ie_drp *ie, int status)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x1 << 9)) | (status << 9);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_owner(struct uwb_ie_drp *ie, int owner)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x1 << 10)) | (owner << 10);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_tiebreaker(struct uwb_ie_drp *ie, int tiebreaker)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x1 << 11)) | (tiebreaker << 11);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+static inline void uwb_ie_drp_set_unsafe(struct uwb_ie_drp *ie, int unsafe)
+{
+ u16 drp_control = le16_to_cpu(ie->drp_control);
+ drp_control = (drp_control & ~(0x1 << 12)) | (unsafe << 12);
+ ie->drp_control = cpu_to_le16(drp_control);
+}
+
+/** Dynamic Reservation Protocol IE (MBOA MAC[7.8.7]) */
+struct uwb_ie_drp_avail {
+ struct uwb_ie_hdr hdr;
+ DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+} __attribute__((packed));
+
+/**
+ * The Vendor ID is set to an OUI that indicates the vendor of the device.
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_vendor_id {
+ u8 data[3];
+} __attribute__((packed));
+
+/**
+ * The device type ID
+ * FIXME: clarify what this means
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_device_type_id {
+ u8 data[3];
+} __attribute__((packed));
+
+
+/**
+ * UWB device information types
+ * ECMA-368 [16.8.10]
+ */
+enum uwb_dev_info_type {
+ UWB_DEV_INFO_VENDOR_ID = 0,
+ UWB_DEV_INFO_VENDOR_TYPE,
+ UWB_DEV_INFO_NAME,
+};
+
+/**
+ * UWB device information found in Identification IE
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_dev_info {
+ u8 type; /* enum uwb_dev_info_type */
+ u8 length;
+ u8 data[];
+} __attribute__((packed));
+
+/**
+ * UWB Identification IE
+ * ECMA-368 [16.8.10]
+ */
+struct uwb_identification_ie {
+ struct uwb_ie_hdr hdr;
+ struct uwb_dev_info info[];
+} __attribute__((packed));
+
+/*
+ * UWB Radio Controller
+ *
+ * These definitions are common to the Radio Control layers as
+ * exported by the WUSB1.0 HWA and WHCI interfaces.
+ */
+
+/** Radio Control Command Block (WUSB1.0[Table 8-65] and WHCI 0.95) */
+struct uwb_rccb {
+ u8 bCommandType; /* enum hwa_cet */
+ __le16 wCommand; /* Command code */
+ u8 bCommandContext; /* Context ID */
+} __attribute__((packed));
+
+
+/** Radio Control Event Block (WUSB[table 8-66], WHCI 0.95) */
+struct uwb_rceb {
+ u8 bEventType; /* enum hwa_cet */
+ __le16 wEvent; /* Event code */
+ u8 bEventContext; /* Context ID */
+} __attribute__((packed));
+
+
+enum {
+ UWB_RC_CET_GENERAL = 0, /* General Command/Event type */
+ UWB_RC_CET_EX_TYPE_1 = 1, /* Extended Type 1 Command/Event type */
+};
+
+/* Commands to the radio controller */
+enum uwb_rc_cmd {
+ UWB_RC_CMD_CHANNEL_CHANGE = 16,
+ UWB_RC_CMD_DEV_ADDR_MGMT = 17, /* Device Address Management */
+ UWB_RC_CMD_GET_IE = 18, /* GET Information Elements */
+ UWB_RC_CMD_RESET = 19,
+ UWB_RC_CMD_SCAN = 20, /* Scan management */
+ UWB_RC_CMD_SET_BEACON_FILTER = 21,
+ UWB_RC_CMD_SET_DRP_IE = 22, /* Dynamic Reservation Protocol IEs */
+ UWB_RC_CMD_SET_IE = 23, /* Information Element management */
+ UWB_RC_CMD_SET_NOTIFICATION_FILTER = 24,
+ UWB_RC_CMD_SET_TX_POWER = 25,
+ UWB_RC_CMD_SLEEP = 26,
+ UWB_RC_CMD_START_BEACON = 27,
+ UWB_RC_CMD_STOP_BEACON = 28,
+ UWB_RC_CMD_BP_MERGE = 29,
+ UWB_RC_CMD_SEND_COMMAND_FRAME = 30,
+ UWB_RC_CMD_SET_ASIE_NOTIF = 31,
+};
+
+/* Notifications from the radio controller */
+enum uwb_rc_evt {
+ UWB_RC_EVT_IE_RCV = 0,
+ UWB_RC_EVT_BEACON = 1,
+ UWB_RC_EVT_BEACON_SIZE = 2,
+ UWB_RC_EVT_BPOIE_CHANGE = 3,
+ UWB_RC_EVT_BP_SLOT_CHANGE = 4,
+ UWB_RC_EVT_BP_SWITCH_IE_RCV = 5,
+ UWB_RC_EVT_DEV_ADDR_CONFLICT = 6,
+ UWB_RC_EVT_DRP_AVAIL = 7,
+ UWB_RC_EVT_DRP = 8,
+ UWB_RC_EVT_BP_SWITCH_STATUS = 9,
+ UWB_RC_EVT_CMD_FRAME_RCV = 10,
+ UWB_RC_EVT_CHANNEL_CHANGE_IE_RCV = 11,
+ /* Events (command responses) use the same code as the command */
+ UWB_RC_EVT_UNKNOWN_CMD_RCV = 65535,
+};
+
+enum uwb_rc_extended_type_1_cmd {
+ UWB_RC_SET_DAA_ENERGY_MASK = 32,
+ UWB_RC_SET_NOTIFICATION_FILTER_EX = 33,
+};
+
+enum uwb_rc_extended_type_1_evt {
+ UWB_RC_DAA_ENERGY_DETECTED = 0,
+};
+
+/* Radio Control Result Code. [WHCI] table 3-3. */
+enum {
+ UWB_RC_RES_SUCCESS = 0,
+ UWB_RC_RES_FAIL,
+ UWB_RC_RES_FAIL_HARDWARE,
+ UWB_RC_RES_FAIL_NO_SLOTS,
+ UWB_RC_RES_FAIL_BEACON_TOO_LARGE,
+ UWB_RC_RES_FAIL_INVALID_PARAMETER,
+ UWB_RC_RES_FAIL_UNSUPPORTED_PWR_LEVEL,
+ UWB_RC_RES_FAIL_INVALID_IE_DATA,
+ UWB_RC_RES_FAIL_BEACON_SIZE_EXCEEDED,
+ UWB_RC_RES_FAIL_CANCELLED,
+ UWB_RC_RES_FAIL_INVALID_STATE,
+ UWB_RC_RES_FAIL_INVALID_SIZE,
+ UWB_RC_RES_FAIL_ACK_NOT_RECEIVED,
+ UWB_RC_RES_FAIL_NO_MORE_ASIE_NOTIF,
+ UWB_RC_RES_FAIL_TIME_OUT = 255,
+};
+
+/* Confirm event. [WHCI] section 3.1.3.1 etc. */
+struct uwb_rc_evt_confirm {
+ struct uwb_rceb rceb;
+ u8 bResultCode;
+} __attribute__((packed));
+
+/* Device Address Management event. [WHCI] section 3.1.3.2. */
+struct uwb_rc_evt_dev_addr_mgmt {
+ struct uwb_rceb rceb;
+ u8 baAddr[6];
+ u8 bResultCode;
+} __attribute__((packed));
+
+
+/* Get IE Event. [WHCI] section 3.1.3.3. */
+struct uwb_rc_evt_get_ie {
+ struct uwb_rceb rceb;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/* Set DRP IE Event. [WHCI] section 3.1.3.7. */
+struct uwb_rc_evt_set_drp_ie {
+ struct uwb_rceb rceb;
+ __le16 wRemainingSpace;
+ u8 bResultCode;
+} __attribute__((packed));
+
+/* Set IE Event. [WHCI] section 3.1.3.8. */
+struct uwb_rc_evt_set_ie {
+ struct uwb_rceb rceb;
+ __le16 RemainingSpace;
+ u8 bResultCode;
+} __attribute__((packed));
+
+/* Scan command. [WHCI] 3.1.3.5. */
+struct uwb_rc_cmd_scan {
+ struct uwb_rccb rccb;
+ u8 bChannelNumber;
+ u8 bScanState;
+ __le16 wStartTime;
+} __attribute__((packed));
+
+/* Set DRP IE command. [WHCI] section 3.1.3.7. */
+struct uwb_rc_cmd_set_drp_ie {
+ struct uwb_rccb rccb;
+ __le16 wIELength;
+ struct uwb_ie_drp IEData[];
+} __attribute__((packed));
+
+/* Set IE command. [WHCI] section 3.1.3.8. */
+struct uwb_rc_cmd_set_ie {
+ struct uwb_rccb rccb;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/* Set DAA Energy Mask event. [WHCI 0.96] section 3.1.3.17. */
+struct uwb_rc_evt_set_daa_energy_mask {
+ struct uwb_rceb rceb;
+ __le16 wLength;
+ u8 result;
+} __attribute__((packed));
+
+/* Set Notification Filter Extended event. [WHCI 0.96] section 3.1.3.18. */
+struct uwb_rc_evt_set_notification_filter_ex {
+ struct uwb_rceb rceb;
+ __le16 wLength;
+ u8 result;
+} __attribute__((packed));
+
+/* IE Received notification. [WHCI] section 3.1.4.1. */
+struct uwb_rc_evt_ie_rcv {
+ struct uwb_rceb rceb;
+ struct uwb_dev_addr SrcAddr;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/* Type of the received beacon. [WHCI] section 3.1.4.2. */
+enum uwb_rc_beacon_type {
+ UWB_RC_BEACON_TYPE_SCAN = 0,
+ UWB_RC_BEACON_TYPE_NEIGHBOR,
+ UWB_RC_BEACON_TYPE_OL_ALIEN,
+ UWB_RC_BEACON_TYPE_NOL_ALIEN,
+};
+
+/* Beacon received notification. [WHCI] 3.1.4.2. */
+struct uwb_rc_evt_beacon {
+ struct uwb_rceb rceb;
+ u8 bChannelNumber;
+ u8 bBeaconType;
+ __le16 wBPSTOffset;
+ u8 bLQI;
+ u8 bRSSI;
+ __le16 wBeaconInfoLength;
+ u8 BeaconInfo[];
+} __attribute__((packed));
+
+
+/* Beacon Size Change notification. [WHCI] section 3.1.4.3 */
+struct uwb_rc_evt_beacon_size {
+ struct uwb_rceb rceb;
+ __le16 wNewBeaconSize;
+} __attribute__((packed));
+
+
+/* BPOIE Change notification. [WHCI] section 3.1.4.4. */
+struct uwb_rc_evt_bpoie_change {
+ struct uwb_rceb rceb;
+ __le16 wBPOIELength;
+ u8 BPOIE[];
+} __attribute__((packed));
+
+
+/* Beacon Slot Change notification. [WHCI] section 3.1.4.5. */
+struct uwb_rc_evt_bp_slot_change {
+ struct uwb_rceb rceb;
+ u8 slot_info;
+} __attribute__((packed));
+
+static inline int uwb_rc_evt_bp_slot_change_slot_num(
+ const struct uwb_rc_evt_bp_slot_change *evt)
+{
+ return evt->slot_info & 0x7f;
+}
+
+static inline int uwb_rc_evt_bp_slot_change_no_slot(
+ const struct uwb_rc_evt_bp_slot_change *evt)
+{
+ return (evt->slot_info & 0x80) >> 7;
+}
+
+/* BP Switch IE Received notification. [WHCI] section 3.1.4.6. */
+struct uwb_rc_evt_bp_switch_ie_rcv {
+ struct uwb_rceb rceb;
+ struct uwb_dev_addr wSrcAddr;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/* DevAddr Conflict notification. [WHCI] section 3.1.4.7. */
+struct uwb_rc_evt_dev_addr_conflict {
+ struct uwb_rceb rceb;
+} __attribute__((packed));
+
+/* DRP notification. [WHCI] section 3.1.4.9. */
+struct uwb_rc_evt_drp {
+ struct uwb_rceb rceb;
+ struct uwb_dev_addr src_addr;
+ u8 reason;
+ u8 beacon_slot_number;
+ __le16 ie_length;
+ u8 ie_data[];
+} __attribute__((packed));
+
+static inline enum uwb_drp_notif_reason uwb_rc_evt_drp_reason(struct uwb_rc_evt_drp *evt)
+{
+ return evt->reason & 0x0f;
+}
+
+
+/* DRP Availability Change notification. [WHCI] section 3.1.4.8. */
+struct uwb_rc_evt_drp_avail {
+ struct uwb_rceb rceb;
+ DECLARE_BITMAP(bmp, UWB_NUM_MAS);
+} __attribute__((packed));
+
+/* BP switch status notification. [WHCI] section 3.1.4.10. */
+struct uwb_rc_evt_bp_switch_status {
+ struct uwb_rceb rceb;
+ u8 status;
+ u8 slot_offset;
+ __le16 bpst_offset;
+ u8 move_countdown;
+} __attribute__((packed));
+
+/* Command Frame Received notification. [WHCI] section 3.1.4.11. */
+struct uwb_rc_evt_cmd_frame_rcv {
+ struct uwb_rceb rceb;
+ __le16 receive_time;
+ struct uwb_dev_addr wSrcAddr;
+ struct uwb_dev_addr wDstAddr;
+ __le16 control;
+ __le16 reserved;
+ __le16 dataLength;
+ u8 data[];
+} __attribute__((packed));
+
+/* Channel Change IE Received notification. [WHCI] section 3.1.4.12. */
+struct uwb_rc_evt_channel_change_ie_rcv {
+ struct uwb_rceb rceb;
+ struct uwb_dev_addr wSrcAddr;
+ __le16 wIELength;
+ u8 IEData[];
+} __attribute__((packed));
+
+/* DAA Energy Detected notification. [WHCI 0.96] section 3.1.4.14. */
+struct uwb_rc_evt_daa_energy_detected {
+ struct uwb_rceb rceb;
+ __le16 wLength;
+ u8 bandID;
+ u8 reserved;
+ u8 toneBmp[16];
+} __attribute__((packed));
+
+
+/**
+ * Radio Control Interface Class Descriptor
+ *
+ * WUSB 1.0 [8.6.1.2]
+ */
+struct uwb_rc_control_intf_class_desc {
+ u8 bLength;
+ u8 bDescriptorType;
+ __le16 bcdRCIVersion;
+} __attribute__((packed));
+
+#endif /* #ifndef __LINUX__UWB_SPEC_H__ */
--- /dev/null
+/*
+ * UWB Multi-interface Controller support.
+ *
+ * Copyright (C) 2007 Cambridge Silicon Radio Ltd.
+ *
+ * This file is released under the GPLv2
+ *
+ * UMC (UWB Multi-interface Controller) capabilities (e.g., radio
+ * controller, host controller) are presented as devices on the "umc"
+ * bus.
+ *
+ * The radio controller is not strictly a UMC capability but it's
+ * useful to present it as such.
+ *
+ * References:
+ *
+ * [WHCI] Wireless Host Controller Interface Specification for
+ * Certified Wireless Universal Serial Bus, revision 0.95.
+ *
+ * How this works is kind of convoluted but simple. The whci.ko driver
+ * loads when WHCI devices are detected. These WHCI devices expose
+ * many devices in the same PCI function (they couldn't have reused
+ * functions, no), so for each PCI function that exposes these many
+ * devices, whci ceates a umc_dev [whci_probe() -> whci_add_cap()]
+ * with umc_device_create() and adds it to the bus with
+ * umc_device_register().
+ *
+ * umc_device_register() calls device_register() which will push the
+ * bus management code to load your UMC driver's somehting_probe()
+ * that you have registered for that capability code.
+ *
+ * Now when the WHCI device is removed, whci_remove() will go over
+ * each umc_dev assigned to each of the PCI function's capabilities
+ * and through whci_del_cap() call umc_device_unregister() each
+ * created umc_dev. Of course, if you are bound to the device, your
+ * driver's something_remove() will be called.
+ */
+
+#ifndef _LINUX_UWB_UMC_H_
+#define _LINUX_UWB_UMC_H_
+
+#include <linux/device.h>
+#include <linux/pci.h>
+
+/*
+ * UMC capability IDs.
+ *
+ * 0x00 is reserved so use it for the radio controller device.
+ *
+ * [WHCI] table 2-8
+ */
+#define UMC_CAP_ID_WHCI_RC 0x00 /* radio controller */
+#define UMC_CAP_ID_WHCI_WUSB_HC 0x01 /* WUSB host controller */
+
+/**
+ * struct umc_dev - UMC capability device
+ *
+ * @version: version of the specification this capability conforms to.
+ * @cap_id: capability ID.
+ * @bar: PCI Bar (64 bit) where the resource lies
+ * @resource: register space resource.
+ * @irq: interrupt line.
+ */
+struct umc_dev {
+ u16 version;
+ u8 cap_id;
+ u8 bar;
+ struct resource resource;
+ unsigned irq;
+ struct device dev;
+};
+
+#define to_umc_dev(d) container_of(d, struct umc_dev, dev)
+
+/**
+ * struct umc_driver - UMC capability driver
+ * @cap_id: supported capability ID.
+ * @match: driver specific capability matching function.
+ * @match_data: driver specific data for match() (e.g., a
+ * table of pci_device_id's if umc_match_pci_id() is used).
+ */
+struct umc_driver {
+ char *name;
+ u8 cap_id;
+ int (*match)(struct umc_driver *, struct umc_dev *);
+ const void *match_data;
+
+ int (*probe)(struct umc_dev *);
+ void (*remove)(struct umc_dev *);
+ int (*suspend)(struct umc_dev *, pm_message_t state);
+ int (*resume)(struct umc_dev *);
+
+ struct device_driver driver;
+};
+
+#define to_umc_driver(d) container_of(d, struct umc_driver, driver)
+
+extern struct bus_type umc_bus_type;
+
+struct umc_dev *umc_device_create(struct device *parent, int n);
+int __must_check umc_device_register(struct umc_dev *umc);
+void umc_device_unregister(struct umc_dev *umc);
+
+int __must_check __umc_driver_register(struct umc_driver *umc_drv,
+ struct module *mod,
+ const char *mod_name);
+
+/**
+ * umc_driver_register - register a UMC capabiltity driver.
+ * @umc_drv: pointer to the driver.
+ */
+static inline int __must_check umc_driver_register(struct umc_driver *umc_drv)
+{
+ return __umc_driver_register(umc_drv, THIS_MODULE, KBUILD_MODNAME);
+}
+void umc_driver_unregister(struct umc_driver *umc_drv);
+
+/*
+ * Utility function you can use to match (umc_driver->match) against a
+ * null-terminated array of 'struct pci_device_id' in
+ * umc_driver->match_data.
+ */
+int umc_match_pci_id(struct umc_driver *umc_drv, struct umc_dev *umc);
+
+/**
+ * umc_parent_pci_dev - return the UMC's parent PCI device or NULL if none
+ * @umc_dev: UMC device whose parent PCI device we are looking for
+ *
+ * DIRTY!!! DON'T RELY ON THIS
+ *
+ * FIXME: This is as dirty as it gets, but we need some way to check
+ * the correct type of umc_dev->parent (so that for example, we can
+ * cast to pci_dev). Casting to pci_dev is necesary because at some
+ * point we need to request resources from the device. Mapping is
+ * easily over come (ioremap and stuff are bus agnostic), but hooking
+ * up to some error handlers (such as pci error handlers) might need
+ * this.
+ *
+ * THIS might (probably will) be removed in the future, so don't count
+ * on it.
+ */
+static inline struct pci_dev *umc_parent_pci_dev(struct umc_dev *umc_dev)
+{
+ struct pci_dev *pci_dev = NULL;
+ if (umc_dev->dev.parent->bus == &pci_bus_type)
+ pci_dev = to_pci_dev(umc_dev->dev.parent);
+ return pci_dev;
+}
+
+/**
+ * umc_dev_get() - reference a UMC device.
+ * @umc_dev: Pointer to UMC device.
+ *
+ * NOTE: we are assuming in this whole scheme that the parent device
+ * is referenced at _probe() time and unreferenced at _remove()
+ * time by the parent's subsystem.
+ */
+static inline struct umc_dev *umc_dev_get(struct umc_dev *umc_dev)
+{
+ get_device(&umc_dev->dev);
+ return umc_dev;
+}
+
+/**
+ * umc_dev_put() - unreference a UMC device.
+ * @umc_dev: Pointer to UMC device.
+ */
+static inline void umc_dev_put(struct umc_dev *umc_dev)
+{
+ put_device(&umc_dev->dev);
+}
+
+/**
+ * umc_set_drvdata - set UMC device's driver data.
+ * @umc_dev: Pointer to UMC device.
+ * @data: Data to set.
+ */
+static inline void umc_set_drvdata(struct umc_dev *umc_dev, void *data)
+{
+ dev_set_drvdata(&umc_dev->dev, data);
+}
+
+/**
+ * umc_get_drvdata - recover UMC device's driver data.
+ * @umc_dev: Pointer to UMC device.
+ */
+static inline void *umc_get_drvdata(struct umc_dev *umc_dev)
+{
+ return dev_get_drvdata(&umc_dev->dev);
+}
+
+int umc_controller_reset(struct umc_dev *umc);
+
+#endif /* #ifndef _LINUX_UWB_UMC_H_ */
--- /dev/null
+/*
+ * Wireless Host Controller Interface for Ultra-Wide-Band and Wireless USB
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ *
+ * References:
+ * [WHCI] Wireless Host Controller Interface Specification for
+ * Certified Wireless Universal Serial Bus, revision 0.95.
+ */
+#ifndef _LINUX_UWB_WHCI_H_
+#define _LINUX_UWB_WHCI_H_
+
+#include <linux/pci.h>
+
+/*
+ * UWB interface capability registers (offsets from UWBBASE)
+ *
+ * [WHCI] section 2.2
+ */
+#define UWBCAPINFO 0x00 /* == UWBCAPDATA(0) */
+# define UWBCAPINFO_TO_N_CAPS(c) (((c) >> 0) & 0xFull)
+#define UWBCAPDATA(n) (8*(n))
+# define UWBCAPDATA_TO_VERSION(c) (((c) >> 32) & 0xFFFFull)
+# define UWBCAPDATA_TO_OFFSET(c) (((c) >> 18) & 0x3FFFull)
+# define UWBCAPDATA_TO_BAR(c) (((c) >> 16) & 0x3ull)
+# define UWBCAPDATA_TO_SIZE(c) ((((c) >> 8) & 0xFFull) * sizeof(u32))
+# define UWBCAPDATA_TO_CAP_ID(c) (((c) >> 0) & 0xFFull)
+
+/* Size of the WHCI capability data (including the RC capability) for
+ a device with n capabilities. */
+#define UWBCAPDATA_SIZE(n) (8 + 8*(n))
+
+
+/*
+ * URC registers (offsets from URCBASE)
+ *
+ * [WHCI] section 2.3
+ */
+#define URCCMD 0x00
+# define URCCMD_RESET (1 << 31) /* UMC Hardware reset */
+# define URCCMD_RS (1 << 30) /* Run/Stop */
+# define URCCMD_EARV (1 << 29) /* Event Address Register Valid */
+# define URCCMD_ACTIVE (1 << 15) /* Command is active */
+# define URCCMD_IWR (1 << 14) /* Interrupt When Ready */
+# define URCCMD_SIZE_MASK 0x00000fff /* Command size mask */
+#define URCSTS 0x04
+# define URCSTS_EPS (1 << 17) /* Event Processing Status */
+# define URCSTS_HALTED (1 << 16) /* RC halted */
+# define URCSTS_HSE (1 << 10) /* Host System Error...fried */
+# define URCSTS_ER (1 << 9) /* Event Ready */
+# define URCSTS_RCI (1 << 8) /* Ready for Command Interrupt */
+# define URCSTS_INT_MASK 0x00000700 /* URC interrupt sources */
+# define URCSTS_ISI 0x000000ff /* Interrupt Source Identification */
+#define URCINTR 0x08
+# define URCINTR_EN_ALL 0x000007ff /* Enable all interrupt sources */
+#define URCCMDADDR 0x10
+#define URCEVTADDR 0x18
+# define URCEVTADDR_OFFSET_MASK 0xfff /* Event pointer offset mask */
+
+
+/** Write 32 bit @value to little endian register at @addr */
+static inline
+void le_writel(u32 value, void __iomem *addr)
+{
+ iowrite32(value, addr);
+}
+
+
+/** Read from 32 bit little endian register at @addr */
+static inline
+u32 le_readl(void __iomem *addr)
+{
+ return ioread32(addr);
+}
+
+
+/** Write 64 bit @value to little endian register at @addr */
+static inline
+void le_writeq(u64 value, void __iomem *addr)
+{
+ iowrite32(value, addr);
+ iowrite32(value >> 32, addr + 4);
+}
+
+
+/** Read from 64 bit little endian register at @addr */
+static inline
+u64 le_readq(void __iomem *addr)
+{
+ u64 value;
+ value = ioread32(addr);
+ value |= (u64)ioread32(addr + 4) << 32;
+ return value;
+}
+
+extern int whci_wait_for(struct device *dev, u32 __iomem *reg,
+ u32 mask, u32 result,
+ unsigned long max_ms, const char *tag);
+
+#endif /* #ifndef _LINUX_UWB_WHCI_H_ */
/* see http://www.siliconimaging.com/RGB%20Bayer.htm */
#define V4L2_PIX_FMT_SBGGR8 v4l2_fourcc('B', 'A', '8', '1') /* 8 BGBG.. GRGR.. */
#define V4L2_PIX_FMT_SGBRG8 v4l2_fourcc('G', 'B', 'R', 'G') /* 8 GBGB.. RGRG.. */
+/*
+ * 10bit raw bayer, expanded to 16 bits
+ * xxxxrrrrrrrrrrxxxxgggggggggg xxxxggggggggggxxxxbbbbbbbbbb...
+ */
+#define V4L2_PIX_FMT_SGRBG10 v4l2_fourcc('B', 'A', '1', '0')
+/* 10bit raw bayer DPCM compressed to 8 bits */
+#define V4L2_PIX_FMT_SGRBG10DPCM8 v4l2_fourcc('B', 'D', '1', '0')
#define V4L2_PIX_FMT_SBGGR16 v4l2_fourcc('B', 'Y', 'R', '2') /* 16 BGBG.. GRGR.. */
/* compressed formats */
--- /dev/null
+/*
+ * WiMedia Logical Link Control Protocol (WLP)
+ *
+ * Copyright (C) 2005-2006 Intel Corporation
+ * Reinette Chatre <reinette.chatre@intel.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version
+ * 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ *
+ *
+ * FIXME: docs
+ *
+ * - Does not (yet) include support for WLP control frames
+ * WLP Draft 0.99 [6.5].
+ *
+ * A visual representation of the data structures.
+ *
+ * wssidB wssidB
+ * ^ ^
+ * | |
+ * wssidA wssidA
+ * wlp interface { ^ ^
+ * ... | |
+ * ... ... wssid wssid ...
+ * wlp --- ... | |
+ * }; neighbors --> neighbA --> neighbB
+ * ...
+ * wss
+ * ...
+ * eda cache --> neighborA --> neighborB --> neighborC ...
+ */
+
+#ifndef __LINUX__WLP_H_
+#define __LINUX__WLP_H_
+
+#include <linux/netdevice.h>
+#include <linux/skbuff.h>
+#include <linux/list.h>
+#include <linux/uwb.h>
+
+/**
+ * WLP Protocol ID
+ * WLP Draft 0.99 [6.2]
+ *
+ * The MUX header for all WLP frames
+ */
+#define WLP_PROTOCOL_ID 0x0100
+
+/**
+ * WLP Version
+ * WLP version placed in the association frames (WLP 0.99 [6.6])
+ */
+#define WLP_VERSION 0x10
+
+/**
+ * Bytes needed to print UUID as string
+ */
+#define WLP_WSS_UUID_STRSIZE 48
+
+/**
+ * Bytes needed to print nonce as string
+ */
+#define WLP_WSS_NONCE_STRSIZE 48
+
+
+/**
+ * Size used for WLP name size
+ *
+ * The WSS name is set to 65 bytes, 1 byte larger than the maximum
+ * allowed by the WLP spec. This is to have a null terminated string
+ * for display to the user. A maximum of 64 bytes will still be used
+ * when placing the WSS name field in association frames.
+ */
+#define WLP_WSS_NAME_SIZE 65
+
+/**
+ * Number of bytes added by WLP to data frame
+ *
+ * A data frame transmitted from a host will be placed in a Standard or
+ * Abbreviated WLP frame. These have an extra 4 bytes of header (struct
+ * wlp_frame_std_abbrv_hdr).
+ * When the stack sends this data frame for transmission it needs to ensure
+ * there is enough headroom for this header.
+ */
+#define WLP_DATA_HLEN 4
+
+/**
+ * State of device regarding WLP Service Set
+ *
+ * WLP_WSS_STATE_NONE: the host does not participate in any WSS
+ * WLP_WSS_STATE_PART_ENROLLED: used as part of the enrollment sequence
+ * ("Partial Enroll"). This state is used to
+ * indicate the first part of enrollment that is
+ * unsecure. If the WSS is unsecure then the
+ * state will promptly go to WLP_WSS_STATE_ENROLLED,
+ * if the WSS is not secure then the enrollment
+ * procedure is a few more steps before we are
+ * enrolled.
+ * WLP_WSS_STATE_ENROLLED: the host is enrolled in a WSS
+ * WLP_WSS_STATE_ACTIVE: WSS is activated
+ * WLP_WSS_STATE_CONNECTED: host is connected to neighbor in WSS
+ *
+ */
+enum wlp_wss_state {
+ WLP_WSS_STATE_NONE = 0,
+ WLP_WSS_STATE_PART_ENROLLED,
+ WLP_WSS_STATE_ENROLLED,
+ WLP_WSS_STATE_ACTIVE,
+ WLP_WSS_STATE_CONNECTED,
+};
+
+/**
+ * WSS Secure status
+ * WLP 0.99 Table 6
+ *
+ * Set to one if the WSS is secure, zero if it is not secure
+ */
+enum wlp_wss_sec_status {
+ WLP_WSS_UNSECURE = 0,
+ WLP_WSS_SECURE,
+};
+
+/**
+ * WLP frame type
+ * WLP Draft 0.99 [6.2 Table 1]
+ */
+enum wlp_frame_type {
+ WLP_FRAME_STANDARD = 0,
+ WLP_FRAME_ABBREVIATED,
+ WLP_FRAME_CONTROL,
+ WLP_FRAME_ASSOCIATION,
+};
+
+/**
+ * WLP Association Message Type
+ * WLP Draft 0.99 [6.6.1.2 Table 8]
+ */
+enum wlp_assoc_type {
+ WLP_ASSOC_D1 = 2,
+ WLP_ASSOC_D2 = 3,
+ WLP_ASSOC_M1 = 4,
+ WLP_ASSOC_M2 = 5,
+ WLP_ASSOC_M3 = 7,
+ WLP_ASSOC_M4 = 8,
+ WLP_ASSOC_M5 = 9,
+ WLP_ASSOC_M6 = 10,
+ WLP_ASSOC_M7 = 11,
+ WLP_ASSOC_M8 = 12,
+ WLP_ASSOC_F0 = 14,
+ WLP_ASSOC_E1 = 32,
+ WLP_ASSOC_E2 = 33,
+ WLP_ASSOC_C1 = 34,
+ WLP_ASSOC_C2 = 35,
+ WLP_ASSOC_C3 = 36,
+ WLP_ASSOC_C4 = 37,
+};
+
+/**
+ * WLP Attribute Type
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ */
+enum wlp_attr_type {
+ WLP_ATTR_AUTH = 0x1005, /* Authenticator */
+ WLP_ATTR_DEV_NAME = 0x1011, /* Device Name */
+ WLP_ATTR_DEV_PWD_ID = 0x1012, /* Device Password ID */
+ WLP_ATTR_E_HASH1 = 0x1014, /* E-Hash1 */
+ WLP_ATTR_E_HASH2 = 0x1015, /* E-Hash2 */
+ WLP_ATTR_E_SNONCE1 = 0x1016, /* E-SNonce1 */
+ WLP_ATTR_E_SNONCE2 = 0x1017, /* E-SNonce2 */
+ WLP_ATTR_ENCR_SET = 0x1018, /* Encrypted Settings */
+ WLP_ATTR_ENRL_NONCE = 0x101A, /* Enrollee Nonce */
+ WLP_ATTR_KEYWRAP_AUTH = 0x101E, /* Key Wrap Authenticator */
+ WLP_ATTR_MANUF = 0x1021, /* Manufacturer */
+ WLP_ATTR_MSG_TYPE = 0x1022, /* Message Type */
+ WLP_ATTR_MODEL_NAME = 0x1023, /* Model Name */
+ WLP_ATTR_MODEL_NR = 0x1024, /* Model Number */
+ WLP_ATTR_PUB_KEY = 0x1032, /* Public Key */
+ WLP_ATTR_REG_NONCE = 0x1039, /* Registrar Nonce */
+ WLP_ATTR_R_HASH1 = 0x103D, /* R-Hash1 */
+ WLP_ATTR_R_HASH2 = 0x103E, /* R-Hash2 */
+ WLP_ATTR_R_SNONCE1 = 0x103F, /* R-SNonce1 */
+ WLP_ATTR_R_SNONCE2 = 0x1040, /* R-SNonce2 */
+ WLP_ATTR_SERIAL = 0x1042, /* Serial number */
+ WLP_ATTR_UUID_E = 0x1047, /* UUID-E */
+ WLP_ATTR_UUID_R = 0x1048, /* UUID-R */
+ WLP_ATTR_PRI_DEV_TYPE = 0x1054, /* Primary Device Type */
+ WLP_ATTR_SEC_DEV_TYPE = 0x1055, /* Secondary Device Type */
+ WLP_ATTR_PORT_DEV = 0x1056, /* Portable Device */
+ WLP_ATTR_APP_EXT = 0x1058, /* Application Extension */
+ WLP_ATTR_WLP_VER = 0x2000, /* WLP Version */
+ WLP_ATTR_WSSID = 0x2001, /* WSSID */
+ WLP_ATTR_WSS_NAME = 0x2002, /* WSS Name */
+ WLP_ATTR_WSS_SEC_STAT = 0x2003, /* WSS Secure Status */
+ WLP_ATTR_WSS_BCAST = 0x2004, /* WSS Broadcast Address */
+ WLP_ATTR_WSS_M_KEY = 0x2005, /* WSS Master Key */
+ WLP_ATTR_ACC_ENRL = 0x2006, /* Accepting Enrollment */
+ WLP_ATTR_WSS_INFO = 0x2007, /* WSS Information */
+ WLP_ATTR_WSS_SEL_MTHD = 0x2008, /* WSS Selection Method */
+ WLP_ATTR_ASSC_MTHD_LIST = 0x2009, /* Association Methods List */
+ WLP_ATTR_SEL_ASSC_MTHD = 0x200A, /* Selected Association Method */
+ WLP_ATTR_ENRL_HASH_COMM = 0x200B, /* Enrollee Hash Commitment */
+ WLP_ATTR_WSS_TAG = 0x200C, /* WSS Tag */
+ WLP_ATTR_WSS_VIRT = 0x200D, /* WSS Virtual EUI-48 */
+ WLP_ATTR_WLP_ASSC_ERR = 0x200E, /* WLP Association Error */
+ WLP_ATTR_VNDR_EXT = 0x200F, /* Vendor Extension */
+};
+
+/**
+ * WLP Category ID of primary/secondary device
+ * WLP Draft 0.99 [6.6.1.8 Table 12]
+ */
+enum wlp_dev_category_id {
+ WLP_DEV_CAT_COMPUTER = 1,
+ WLP_DEV_CAT_INPUT,
+ WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER,
+ WLP_DEV_CAT_CAMERA,
+ WLP_DEV_CAT_STORAGE,
+ WLP_DEV_CAT_INFRASTRUCTURE,
+ WLP_DEV_CAT_DISPLAY,
+ WLP_DEV_CAT_MULTIM,
+ WLP_DEV_CAT_GAMING,
+ WLP_DEV_CAT_TELEPHONE,
+ WLP_DEV_CAT_OTHER = 65535,
+};
+
+/**
+ * WLP WSS selection method
+ * WLP Draft 0.99 [6.6.1.6 Table 10]
+ */
+enum wlp_wss_sel_mthd {
+ WLP_WSS_ENRL_SELECT = 1, /* Enrollee selects */
+ WLP_WSS_REG_SELECT, /* Registrar selects */
+};
+
+/**
+ * WLP association error values
+ * WLP Draft 0.99 [6.6.1.5 Table 9]
+ */
+enum wlp_assc_error {
+ WLP_ASSOC_ERROR_NONE,
+ WLP_ASSOC_ERROR_AUTH, /* Authenticator Failure */
+ WLP_ASSOC_ERROR_ROGUE, /* Rogue activity suspected */
+ WLP_ASSOC_ERROR_BUSY, /* Device busy */
+ WLP_ASSOC_ERROR_LOCK, /* Setup Locked */
+ WLP_ASSOC_ERROR_NOT_READY, /* Registrar not ready */
+ WLP_ASSOC_ERROR_INV, /* Invalid WSS selection */
+ WLP_ASSOC_ERROR_MSG_TIME, /* Message timeout */
+ WLP_ASSOC_ERROR_ENR_TIME, /* Enrollment session timeout */
+ WLP_ASSOC_ERROR_PW, /* Device password invalid */
+ WLP_ASSOC_ERROR_VER, /* Unsupported version */
+ WLP_ASSOC_ERROR_INT, /* Internal error */
+ WLP_ASSOC_ERROR_UNDEF, /* Undefined error */
+ WLP_ASSOC_ERROR_NUM, /* Numeric comparison failure */
+ WLP_ASSOC_ERROR_WAIT, /* Waiting for user input */
+};
+
+/**
+ * WLP Parameters
+ * WLP 0.99 [7.7]
+ */
+enum wlp_parameters {
+ WLP_PER_MSG_TIMEOUT = 15, /* Seconds to wait for response to
+ association message. */
+};
+
+/**
+ * WLP IE
+ *
+ * The WLP IE should be included in beacons by all devices.
+ *
+ * The driver can set only a few of the fields in this information element,
+ * most fields are managed by the device self. When the driver needs to set
+ * a field it will only provide values for the fields of interest, the rest
+ * will be filled with zeroes. The fields of interest are:
+ *
+ * Element ID
+ * Length
+ * Capabilities (only to include WSSID Hash list length)
+ * WSSID Hash List fields
+ *
+ * WLP 0.99 [6.7]
+ *
+ * Only the fields that will be used are detailed in this structure, rest
+ * are not detailed or marked as "notused".
+ */
+struct wlp_ie {
+ struct uwb_ie_hdr hdr;
+ __le16 capabilities;
+ __le16 cycle_param;
+ __le16 acw_anchor_addr;
+ u8 wssid_hash_list[];
+} __attribute__((packed));
+
+static inline int wlp_ie_hash_length(struct wlp_ie *ie)
+{
+ return (le16_to_cpu(ie->capabilities) >> 12) & 0xf;
+}
+
+static inline void wlp_ie_set_hash_length(struct wlp_ie *ie, int hash_length)
+{
+ u16 caps = le16_to_cpu(ie->capabilities);
+ caps = (caps & ~(0xf << 12)) | (hash_length << 12);
+ ie->capabilities = cpu_to_le16(caps);
+}
+
+/**
+ * WLP nonce
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * A 128-bit random number often used (E-SNonce1, E-SNonce2, Enrollee
+ * Nonce, Registrar Nonce, R-SNonce1, R-SNonce2). It is passed to HW so
+ * it is packed.
+ */
+struct wlp_nonce {
+ u8 data[16];
+} __attribute__((packed));
+
+/**
+ * WLP UUID
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * Universally Unique Identifier (UUID) encoded as an octet string in the
+ * order the octets are shown in string representation in RFC4122. A UUID
+ * is often used (UUID-E, UUID-R, WSSID). It is passed to HW so it is packed.
+ */
+struct wlp_uuid {
+ u8 data[16];
+} __attribute__((packed));
+
+
+/**
+ * Primary and secondary device type attributes
+ * WLP Draft 0.99 [6.6.1.8]
+ */
+struct wlp_dev_type {
+ enum wlp_dev_category_id category:16;
+ u8 OUI[3];
+ u8 OUIsubdiv;
+ __le16 subID;
+} __attribute__((packed));
+
+/**
+ * WLP frame header
+ * WLP Draft 0.99 [6.2]
+ */
+struct wlp_frame_hdr {
+ __le16 mux_hdr; /* WLP_PROTOCOL_ID */
+ enum wlp_frame_type type:8;
+} __attribute__((packed));
+
+/**
+ * WLP attribute field header
+ * WLP Draft 0.99 [6.6.1]
+ *
+ * Header of each attribute found in an association frame
+ */
+struct wlp_attr_hdr {
+ __le16 type;
+ __le16 length;
+} __attribute__((packed));
+
+/**
+ * Device information commonly used together
+ *
+ * Each of these device information elements has a specified range in which it
+ * should fit (WLP 0.99 [Table 6]). This range provided in the spec does not
+ * include the termination null '\0' character (when used in the
+ * association protocol the attribute fields are accompanied
+ * with a "length" field so the full range from the spec can be used for
+ * the value). We thus allocate an extra byte to be able to store a string
+ * of max length with a terminating '\0'.
+ */
+struct wlp_device_info {
+ char name[33];
+ char model_name[33];
+ char manufacturer[65];
+ char model_nr[33];
+ char serial[33];
+ struct wlp_dev_type prim_dev_type;
+};
+
+/**
+ * Macros for the WLP attributes
+ *
+ * There are quite a few attributes (total is 43). The attribute layout can be
+ * in one of three categories: one value, an array, an enum forced to 8 bits.
+ * These macros help with their definitions.
+ */
+#define wlp_attr(type, name) \
+struct wlp_attr_##name { \
+ struct wlp_attr_hdr hdr; \
+ type name; \
+} __attribute__((packed));
+
+#define wlp_attr_array(type, name) \
+struct wlp_attr_##name { \
+ struct wlp_attr_hdr hdr; \
+ type name[]; \
+} __attribute__((packed));
+
+/**
+ * WLP association attribute fields
+ * WLP Draft 0.99 [6.6.1 Table 6]
+ *
+ * Attributes appear in same order as the Table in the spec
+ * FIXME Does not define all attributes yet
+ */
+
+/* Device name: Friendly name of sending device */
+wlp_attr_array(u8, dev_name)
+
+/* Enrollee Nonce: Random number generated by enrollee for an enrollment
+ * session */
+wlp_attr(struct wlp_nonce, enonce)
+
+/* Manufacturer name: Name of manufacturer of the sending device */
+wlp_attr_array(u8, manufacturer)
+
+/* WLP Message Type */
+wlp_attr(u8, msg_type)
+
+/* WLP Model name: Model name of sending device */
+wlp_attr_array(u8, model_name)
+
+/* WLP Model number: Model number of sending device */
+wlp_attr_array(u8, model_nr)
+
+/* Registrar Nonce: Random number generated by registrar for an enrollment
+ * session */
+wlp_attr(struct wlp_nonce, rnonce)
+
+/* Serial number of device */
+wlp_attr_array(u8, serial)
+
+/* UUID of enrollee */
+wlp_attr(struct wlp_uuid, uuid_e)
+
+/* UUID of registrar */
+wlp_attr(struct wlp_uuid, uuid_r)
+
+/* WLP Primary device type */
+wlp_attr(struct wlp_dev_type, prim_dev_type)
+
+/* WLP Secondary device type */
+wlp_attr(struct wlp_dev_type, sec_dev_type)
+
+/* WLP protocol version */
+wlp_attr(u8, version)
+
+/* WLP service set identifier */
+wlp_attr(struct wlp_uuid, wssid)
+
+/* WLP WSS name */
+wlp_attr_array(u8, wss_name)
+
+/* WLP WSS Secure Status */
+wlp_attr(u8, wss_sec_status)
+
+/* WSS Broadcast Address */
+wlp_attr(struct uwb_mac_addr, wss_bcast)
+
+/* WLP Accepting Enrollment */
+wlp_attr(u8, accept_enrl)
+
+/**
+ * WSS information attributes
+ * WLP Draft 0.99 [6.6.3 Table 15]
+ */
+struct wlp_wss_info {
+ struct wlp_attr_wssid wssid;
+ struct wlp_attr_wss_name name;
+ struct wlp_attr_accept_enrl accept;
+ struct wlp_attr_wss_sec_status sec_stat;
+ struct wlp_attr_wss_bcast bcast;
+} __attribute__((packed));
+
+/* WLP WSS Information */
+wlp_attr_array(struct wlp_wss_info, wss_info)
+
+/* WLP WSS Selection method */
+wlp_attr(u8, wss_sel_mthd)
+
+/* WLP WSS tag */
+wlp_attr(u8, wss_tag)
+
+/* WSS Virtual Address */
+wlp_attr(struct uwb_mac_addr, wss_virt)
+
+/* WLP association error */
+wlp_attr(u8, wlp_assc_err)
+
+/**
+ * WLP standard and abbreviated frames
+ *
+ * WLP Draft 0.99 [6.3] and [6.4]
+ *
+ * The difference between the WLP standard frame and the WLP
+ * abbreviated frame is that the standard frame includes the src
+ * and dest addresses from the Ethernet header, the abbreviated frame does
+ * not.
+ * The src/dest (as well as the type/length and client data) are already
+ * defined as part of the Ethernet header, we do not do this here.
+ * From this perspective the standard and abbreviated frames appear the
+ * same - they will be treated differently though.
+ *
+ * The size of this header is also captured in WLP_DATA_HLEN to enable
+ * interfaces to prepare their headroom.
+ */
+struct wlp_frame_std_abbrv_hdr {
+ struct wlp_frame_hdr hdr;
+ u8 tag;
+} __attribute__((packed));
+
+/**
+ * WLP association frames
+ *
+ * WLP Draft 0.99 [6.6]
+ */
+struct wlp_frame_assoc {
+ struct wlp_frame_hdr hdr;
+ enum wlp_assoc_type type:8;
+ struct wlp_attr_version version;
+ struct wlp_attr_msg_type msg_type;
+ u8 attr[];
+} __attribute__((packed));
+
+/* Ethernet to dev address mapping */
+struct wlp_eda {
+ spinlock_t lock;
+ struct list_head cache; /* Eth<->Dev Addr cache */
+};
+
+/**
+ * WSS information temporary storage
+ *
+ * This information is only stored temporarily during discovery. It should
+ * not be stored unless the device is enrolled in the advertised WSS. This
+ * is done mainly because we follow the letter of the spec in this regard.
+ * See WLP 0.99 [7.2.3].
+ * When the device does become enrolled in a WSS the WSS information will
+ * be stored as part of the more comprehensive struct wlp_wss.
+ */
+struct wlp_wss_tmp_info {
+ char name[WLP_WSS_NAME_SIZE];
+ u8 accept_enroll;
+ u8 sec_status;
+ struct uwb_mac_addr bcast;
+};
+
+struct wlp_wssid_e {
+ struct list_head node;
+ struct wlp_uuid wssid;
+ struct wlp_wss_tmp_info *info;
+};
+
+/**
+ * A cache entry of WLP neighborhood
+ *
+ * @node: head of list is wlp->neighbors
+ * @wssid: list of wssids of this neighbor, element is wlp_wssid_e
+ * @info: temporary storage for information learned during discovery. This
+ * storage is used together with the wssid_e temporary storage
+ * during discovery.
+ */
+struct wlp_neighbor_e {
+ struct list_head node;
+ struct wlp_uuid uuid;
+ struct uwb_dev *uwb_dev;
+ struct list_head wssid; /* Elements are wlp_wssid_e */
+ struct wlp_device_info *info;
+};
+
+struct wlp;
+/**
+ * Information for an association session in progress.
+ *
+ * @exp_message: The type of the expected message. Both this message and a
+ * F0 message (which can be sent in response to any
+ * association frame) will be accepted as a valid message for
+ * this session.
+ * @cb: The function that will be called upon receipt of this
+ * message.
+ * @cb_priv: Private data of callback
+ * @data: Data used in association process (always a sk_buff?)
+ * @neighbor: Address of neighbor with which association session is in
+ * progress.
+ */
+struct wlp_session {
+ enum wlp_assoc_type exp_message;
+ void (*cb)(struct wlp *);
+ void *cb_priv;
+ void *data;
+ struct uwb_dev_addr neighbor_addr;
+};
+
+/**
+ * WLP Service Set
+ *
+ * @mutex: used to protect entire WSS structure.
+ *
+ * @name: The WSS name is set to 65 bytes, 1 byte larger than the maximum
+ * allowed by the WLP spec. This is to have a null terminated string
+ * for display to the user. A maximum of 64 bytes will still be used
+ * when placing the WSS name field in association frames.
+ *
+ * @accept_enroll: Accepting enrollment: Set to one if registrar is
+ * accepting enrollment in WSS, or zero otherwise.
+ *
+ * Global and local information for each WSS in which we are enrolled.
+ * WLP 0.99 Section 7.2.1 and Section 7.2.2
+ */
+struct wlp_wss {
+ struct mutex mutex;
+ struct kobject kobj;
+ /* Global properties. */
+ struct wlp_uuid wssid;
+ u8 hash;
+ char name[WLP_WSS_NAME_SIZE];
+ struct uwb_mac_addr bcast;
+ u8 secure_status:1;
+ u8 master_key[16];
+ /* Local properties. */
+ u8 tag;
+ struct uwb_mac_addr virtual_addr;
+ /* Extra */
+ u8 accept_enroll:1;
+ enum wlp_wss_state state;
+};
+
+/**
+ * WLP main structure
+ * @mutex: protect changes to WLP structure. We only allow changes to the
+ * uuid, so currently this mutex only protects this field.
+ */
+struct wlp {
+ struct mutex mutex;
+ struct uwb_rc *rc; /* UWB radio controller */
+ struct uwb_pal pal;
+ struct wlp_eda eda;
+ struct wlp_uuid uuid;
+ struct wlp_session *session;
+ struct wlp_wss wss;
+ struct mutex nbmutex; /* Neighbor mutex protects neighbors list */
+ struct list_head neighbors; /* Elements are wlp_neighbor_e */
+ struct uwb_notifs_handler uwb_notifs_handler;
+ struct wlp_device_info *dev_info;
+ void (*fill_device_info)(struct wlp *wlp, struct wlp_device_info *info);
+ int (*xmit_frame)(struct wlp *, struct sk_buff *,
+ struct uwb_dev_addr *);
+ void (*stop_queue)(struct wlp *);
+ void (*start_queue)(struct wlp *);
+};
+
+/* sysfs */
+
+
+struct wlp_wss_attribute {
+ struct attribute attr;
+ ssize_t (*show)(struct wlp_wss *wss, char *buf);
+ ssize_t (*store)(struct wlp_wss *wss, const char *buf, size_t count);
+};
+
+#define WSS_ATTR(_name, _mode, _show, _store) \
+static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \
+ _show, _store)
+
+extern int wlp_setup(struct wlp *, struct uwb_rc *);
+extern void wlp_remove(struct wlp *);
+extern ssize_t wlp_neighborhood_show(struct wlp *, char *);
+extern int wlp_wss_setup(struct net_device *, struct wlp_wss *);
+extern void wlp_wss_remove(struct wlp_wss *);
+extern ssize_t wlp_wss_activate_show(struct wlp_wss *, char *);
+extern ssize_t wlp_wss_activate_store(struct wlp_wss *, const char *, size_t);
+extern ssize_t wlp_eda_show(struct wlp *, char *);
+extern ssize_t wlp_eda_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_uuid_show(struct wlp *, char *);
+extern ssize_t wlp_uuid_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_name_show(struct wlp *, char *);
+extern ssize_t wlp_dev_name_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_manufacturer_show(struct wlp *, char *);
+extern ssize_t wlp_dev_manufacturer_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_model_name_show(struct wlp *, char *);
+extern ssize_t wlp_dev_model_name_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_model_nr_show(struct wlp *, char *);
+extern ssize_t wlp_dev_model_nr_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_serial_show(struct wlp *, char *);
+extern ssize_t wlp_dev_serial_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_prim_category_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_category_store(struct wlp *, const char *,
+ size_t);
+extern ssize_t wlp_dev_prim_OUI_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_OUI_store(struct wlp *, const char *, size_t);
+extern ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *, const char *,
+ size_t);
+extern ssize_t wlp_dev_prim_subcat_show(struct wlp *, char *);
+extern ssize_t wlp_dev_prim_subcat_store(struct wlp *, const char *,
+ size_t);
+extern int wlp_receive_frame(struct device *, struct wlp *, struct sk_buff *,
+ struct uwb_dev_addr *);
+extern int wlp_prepare_tx_frame(struct device *, struct wlp *,
+ struct sk_buff *, struct uwb_dev_addr *);
+void wlp_reset_all(struct wlp *wlp);
+
+/**
+ * Initialize WSS
+ */
+static inline
+void wlp_wss_init(struct wlp_wss *wss)
+{
+ mutex_init(&wss->mutex);
+}
+
+static inline
+void wlp_init(struct wlp *wlp)
+{
+ INIT_LIST_HEAD(&wlp->neighbors);
+ mutex_init(&wlp->mutex);
+ mutex_init(&wlp->nbmutex);
+ wlp_wss_init(&wlp->wss);
+}
+
+
+#endif /* #ifndef __LINUX__WLP_H_ */
void *priv;
};
+void v4l2_int_device_try_attach_all(void);
+
int v4l2_int_device_register(struct v4l2_int_device *d);
void v4l2_int_device_unregister(struct v4l2_int_device *d);
*
*/
+enum v4l2_power {
+ V4L2_POWER_OFF = 0,
+ V4L2_POWER_ON,
+ V4L2_POWER_STANDBY,
+};
+
/* Slave interface type. */
enum v4l2_if_type {
/*
vidioc_int_queryctrl_num,
vidioc_int_g_ctrl_num,
vidioc_int_s_ctrl_num,
+ vidioc_int_cropcap_num,
+ vidioc_int_g_crop_num,
+ vidioc_int_s_crop_num,
vidioc_int_g_parm_num,
vidioc_int_s_parm_num,
vidioc_int_dev_init_num = 1000,
/* Delinitialise the device at slave detach. */
vidioc_int_dev_exit_num,
- /* Set device power state: 0 is off, non-zero is on. */
+ /* Set device power state. */
vidioc_int_s_power_num,
+ /*
+ * Get slave private data, e.g. platform-specific slave
+ * configuration used by the master.
+ */
+ vidioc_int_g_priv_num,
/* Get slave interface parameters. */
vidioc_int_g_ifparm_num,
/* Does the slave need to be reset after VIDIOC_DQBUF? */
vidioc_int_g_needs_reset_num,
+ vidioc_int_enum_framesizes_num,
+ vidioc_int_enum_frameintervals_num,
/*
*
V4L2_INT_WRAPPER_1(queryctrl, struct v4l2_queryctrl, *);
V4L2_INT_WRAPPER_1(g_ctrl, struct v4l2_control, *);
V4L2_INT_WRAPPER_1(s_ctrl, struct v4l2_control, *);
+V4L2_INT_WRAPPER_1(cropcap, struct v4l2_cropcap, *);
+V4L2_INT_WRAPPER_1(g_crop, struct v4l2_crop, *);
+V4L2_INT_WRAPPER_1(s_crop, struct v4l2_crop, *);
V4L2_INT_WRAPPER_1(g_parm, struct v4l2_streamparm, *);
V4L2_INT_WRAPPER_1(s_parm, struct v4l2_streamparm, *);
V4L2_INT_WRAPPER_0(dev_init);
V4L2_INT_WRAPPER_0(dev_exit);
-V4L2_INT_WRAPPER_1(s_power, int, );
+V4L2_INT_WRAPPER_1(s_power, enum v4l2_power, );
+V4L2_INT_WRAPPER_1(g_priv, void, *);
V4L2_INT_WRAPPER_1(g_ifparm, struct v4l2_ifparm, *);
V4L2_INT_WRAPPER_1(g_needs_reset, void, *);
+V4L2_INT_WRAPPER_1(enum_framesizes, struct v4l2_frmsizeenum, *);
+V4L2_INT_WRAPPER_1(enum_frameintervals, struct v4l2_frmivalenum, *);
V4L2_INT_WRAPPER_0(reset);
V4L2_INT_WRAPPER_0(init);
extern const char *v4l2_type_names[];
/* Compatibility layer interface -- v4l1-compat module */
-typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
+typedef int (*v4l2_kioctl)(struct file *file,
unsigned int cmd, void *arg);
#ifdef CONFIG_VIDEO_V4L1_COMPAT
-int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
+int v4l_compat_translate_ioctl(struct file *file,
int cmd, void *arg, v4l2_kioctl driver_ioctl);
#else
-#define v4l_compat_translate_ioctl(inode, file, cmd, arg, ioctl) (-EINVAL)
+#define v4l_compat_translate_ioctl(file, cmd, arg, ioctl) (-EINVAL)
#endif
/* 32 Bits compatibility layer for 64 bits processors */
extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
unsigned long arg);
-extern int video_ioctl2(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg);
-
/* Include support for obsoleted stuff */
extern int video_usercopy(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg,
int (*func)(struct inode *inode, struct file *file,
unsigned int cmd, void *arg));
+/* Standard handlers for V4L ioctl's */
+
+/* This prototype is used on fops.unlocked_ioctl */
+extern int __video_ioctl2(struct file *file,
+ unsigned int cmd, unsigned long arg);
+
+/* This prototype is used on fops.ioctl
+ * Since fops.ioctl enables Kernel Big Lock, it is preferred
+ * to use __video_ioctl2 instead.
+ * It should be noticed that there's no lock code inside
+ * video_ioctl2().
+ */
+extern int video_ioctl2(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+
#endif /* _V4L2_IOCTL_H */
void videobuf_dvb_unregister_bus(struct videobuf_dvb_frontends *f);
struct videobuf_dvb_frontend * videobuf_dvb_alloc_frontend(struct videobuf_dvb_frontends *f, int id);
+void videobuf_dvb_dealloc_frontends(struct videobuf_dvb_frontends *f);
struct videobuf_dvb_frontend * videobuf_dvb_get_frontend(struct videobuf_dvb_frontends *f, int id);
int videobuf_dvb_find_frontend(struct videobuf_dvb_frontends *f, struct dvb_frontend *p);
#include <linux/key.h>
#include <linux/unwind.h>
#include <linux/buffer_head.h>
+#include <linux/page_cgroup.h>
#include <linux/debug_locks.h>
#include <linux/debugobjects.h>
#include <linux/lockdep.h>
vmalloc_init();
vfs_caches_init_early();
cpuset_init_early();
+ page_cgroup_init();
mem_init();
enable_debug_pagealloc();
cpu_hotplug_init();
desc->chip_data = NULL;
desc->handle_irq = handle_bad_irq;
desc->chip = &no_irq_chip;
+ desc->name = NULL;
spin_unlock_irqrestore(&desc->lock, flags);
}
return 0;
spin_lock_irqsave(&desc->lock, flags);
- ret = __irq_set_trigger(desc, irq, flags);
+ ret = __irq_set_trigger(desc, irq, type);
spin_unlock_irqrestore(&desc->lock, flags);
return ret;
}
/* Take cpucontrol mutex to protect against CPU hotplug */
mutex_lock(&rcu_barrier_mutex);
init_completion(&rcu_barrier_completion);
- atomic_set(&rcu_barrier_cpu_count, 0);
/*
- * The queueing of callbacks in all CPUs must be atomic with
- * respect to RCU, otherwise one CPU may queue a callback,
- * wait for a grace period, decrement barrier count and call
- * complete(), while other CPUs have not yet queued anything.
- * So, we need to make sure that grace periods cannot complete
- * until all the callbacks are queued.
+ * Initialize rcu_barrier_cpu_count to 1, then invoke
+ * rcu_barrier_func() on each CPU, so that each CPU also has
+ * incremented rcu_barrier_cpu_count. Only then is it safe to
+ * decrement rcu_barrier_cpu_count -- otherwise the first CPU
+ * might complete its grace period before all of the other CPUs
+ * did their increment, causing this function to return too
+ * early.
*/
- rcu_read_lock();
+ atomic_set(&rcu_barrier_cpu_count, 1);
on_each_cpu(rcu_barrier_func, (void *)type, 1);
- rcu_read_unlock();
+ if (atomic_dec_and_test(&rcu_barrier_cpu_count))
+ complete(&rcu_barrier_completion);
wait_for_completion(&rcu_barrier_completion);
mutex_unlock(&rcu_barrier_mutex);
}
unsigned int sysctl_sched_shares_ratelimit = 250000;
/*
+ * Inject some fuzzyness into changing the per-cpu group shares
+ * this avoids remote rq-locks at the expense of fairness.
+ * default: 4
+ */
+unsigned int sysctl_sched_shares_thresh = 4;
+
+/*
* period over which we measure -rt task cpu usage in us.
* default: 1s
*/
* Calculate and set the cpu's group shares.
*/
static void
-__update_group_shares_cpu(struct task_group *tg, int cpu,
- unsigned long sd_shares, unsigned long sd_rq_weight)
+update_group_shares_cpu(struct task_group *tg, int cpu,
+ unsigned long sd_shares, unsigned long sd_rq_weight)
{
int boost = 0;
unsigned long shares;
*
*/
shares = (sd_shares * rq_weight) / (sd_rq_weight + 1);
+ shares = clamp_t(unsigned long, shares, MIN_SHARES, MAX_SHARES);
- /*
- * record the actual number of shares, not the boosted amount.
- */
- tg->cfs_rq[cpu]->shares = boost ? 0 : shares;
- tg->cfs_rq[cpu]->rq_weight = rq_weight;
+ if (abs(shares - tg->se[cpu]->load.weight) >
+ sysctl_sched_shares_thresh) {
+ struct rq *rq = cpu_rq(cpu);
+ unsigned long flags;
- if (shares < MIN_SHARES)
- shares = MIN_SHARES;
- else if (shares > MAX_SHARES)
- shares = MAX_SHARES;
+ spin_lock_irqsave(&rq->lock, flags);
+ /*
+ * record the actual number of shares, not the boosted amount.
+ */
+ tg->cfs_rq[cpu]->shares = boost ? 0 : shares;
+ tg->cfs_rq[cpu]->rq_weight = rq_weight;
- __set_se_shares(tg->se[cpu], shares);
+ __set_se_shares(tg->se[cpu], shares);
+ spin_unlock_irqrestore(&rq->lock, flags);
+ }
}
/*
if (!rq_weight)
rq_weight = cpus_weight(sd->span) * NICE_0_LOAD;
- for_each_cpu_mask(i, sd->span) {
- struct rq *rq = cpu_rq(i);
- unsigned long flags;
-
- spin_lock_irqsave(&rq->lock, flags);
- __update_group_shares_cpu(tg, i, shares, rq_weight);
- spin_unlock_irqrestore(&rq->lock, flags);
- }
+ for_each_cpu_mask(i, sd->span)
+ update_group_shares_cpu(tg, i, shares, rq_weight);
return 0;
}
if (sched_feat(HRTICK))
hrtick_clear(rq);
- /*
- * Do the rq-clock update outside the rq lock:
- */
- local_irq_disable();
+ spin_lock_irq(&rq->lock);
update_rq_clock(rq);
- spin_lock(&rq->lock);
clear_tsk_need_resched(prev);
if (prev->state && !(preempt_count() & PREEMPT_ACTIVE)) {
const_debug unsigned int sysctl_sched_migration_cost = 500000UL;
+static const struct sched_class fair_sched_class;
+
/**************************************************************
* CFS operations on generic schedulable entities:
*/
#endif
/*
- * delta *= w / rw
+ * delta *= P[w / rw]
*/
static inline unsigned long
calc_delta_weight(unsigned long delta, struct sched_entity *se)
}
/*
- * delta *= rw / w
+ * delta /= w
*/
static inline unsigned long
calc_delta_fair(unsigned long delta, struct sched_entity *se)
{
- for_each_sched_entity(se) {
- delta = calc_delta_mine(delta,
- cfs_rq_of(se)->load.weight, &se->load);
- }
+ if (unlikely(se->load.weight != NICE_0_LOAD))
+ delta = calc_delta_mine(delta, NICE_0_LOAD, &se->load);
return delta;
}
* We calculate the wall-time slice from the period by taking a part
* proportional to the weight.
*
- * s = p*w/rw
+ * s = p*P[w/rw]
*/
static u64 sched_slice(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
- return calc_delta_weight(__sched_period(cfs_rq->nr_running), se);
+ unsigned long nr_running = cfs_rq->nr_running;
+
+ if (unlikely(!se->on_rq))
+ nr_running++;
+
+ return calc_delta_weight(__sched_period(nr_running), se);
}
/*
* We calculate the vruntime slice of a to be inserted task
*
- * vs = s*rw/w = p
+ * vs = s/w
*/
-static u64 sched_vslice_add(struct cfs_rq *cfs_rq, struct sched_entity *se)
+static u64 sched_vslice(struct cfs_rq *cfs_rq, struct sched_entity *se)
{
- unsigned long nr_running = cfs_rq->nr_running;
-
- if (!se->on_rq)
- nr_running++;
-
- return __sched_period(nr_running);
+ return calc_delta_fair(sched_slice(cfs_rq, se), se);
}
/*
* stays open at the end.
*/
if (initial && sched_feat(START_DEBIT))
- vruntime += sched_vslice_add(cfs_rq, se);
+ vruntime += sched_vslice(cfs_rq, se);
if (!initial) {
/* sleeps upto a single latency don't count. */
struct rq *rq = rq_of(cfs_rq);
u64 pair_slice = rq->clock - cfs_rq->pair_start;
- if (!cfs_rq->next || pair_slice > sched_slice(cfs_rq, cfs_rq->next)) {
+ if (!cfs_rq->next || pair_slice > sysctl_sched_min_granularity) {
cfs_rq->pair_start = rq->clock;
return se;
}
hrtick_start(rq, delta);
}
}
+
+/*
+ * called from enqueue/dequeue and updates the hrtick when the
+ * current task is from our class and nr_running is low enough
+ * to matter.
+ */
+static void hrtick_update(struct rq *rq)
+{
+ struct task_struct *curr = rq->curr;
+
+ if (curr->sched_class != &fair_sched_class)
+ return;
+
+ if (cfs_rq_of(&curr->se)->nr_running < sched_nr_latency)
+ hrtick_start_fair(rq, curr);
+}
#else /* !CONFIG_SCHED_HRTICK */
static inline void
hrtick_start_fair(struct rq *rq, struct task_struct *p)
{
}
+
+static inline void hrtick_update(struct rq *rq)
+{
+}
#endif
/*
wakeup = 1;
}
- hrtick_start_fair(rq, rq->curr);
+ hrtick_update(rq);
}
/*
sleep = 1;
}
- hrtick_start_fair(rq, rq->curr);
+ hrtick_update(rq);
}
/*
#ifdef CONFIG_SMP
-static const struct sched_class fair_sched_class;
-
#ifdef CONFIG_FAIR_GROUP_SCHED
/*
* effective_load() calculates the load change as seen from the root_task_group
SCHED_FEAT(AFFINE_WAKEUPS, 1)
SCHED_FEAT(CACHE_HOT_BUDDY, 1)
SCHED_FEAT(SYNC_WAKEUPS, 1)
-SCHED_FEAT(HRTICK, 1)
+SCHED_FEAT(HRTICK, 0)
SCHED_FEAT(DOUBLE_TICK, 0)
SCHED_FEAT(ASYM_GRAN, 1)
SCHED_FEAT(LB_BIAS, 1)
static int show_schedstat(struct seq_file *seq, void *v)
{
int cpu;
- int mask_len = NR_CPUS/32 * 9;
+ int mask_len = DIV_ROUND_UP(NR_CPUS, 32) * 9;
char *mask_str = kmalloc(mask_len, GFP_KERNEL);
if (mask_str == NULL)
},
{
.ctl_name = CTL_UNNUMBERED,
+ .procname = "sched_shares_thresh",
+ .data = &sysctl_sched_shares_thresh,
+ .maxlen = sizeof(unsigned int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_minmax,
+ .strategy = &sysctl_intvec,
+ .extra1 = &zero,
+ },
+ {
+ .ctl_name = CTL_UNNUMBERED,
.procname = "sched_child_runs_first",
.data = &sysctl_sched_child_runs_first,
.maxlen = sizeof(unsigned int),
static void tick_nohz_kick_tick(int cpu)
{
struct tick_sched *ts = &per_cpu(tick_cpu_sched, cpu);
+ ktime_t delta, now;
if (!ts->tick_stopped)
return;
- tick_nohz_restart(ts, ktime_get());
+ /*
+ * Do not touch the tick device, when the next expiry is either
+ * already reached or less/equal than the tick period.
+ */
+ now = ktime_get();
+ delta = ktime_sub(ts->sched_timer.expires, now);
+ if (delta.tv64 <= tick_period.tv64)
+ return;
+
+ tick_nohz_restart(ts, now);
}
#else
return 0;
}
EXPORT_SYMBOL(bitmap_allocate_region);
+
+/**
+ * bitmap_copy_le - copy a bitmap, putting the bits into little-endian order.
+ * @dst: destination buffer
+ * @src: bitmap to copy
+ * @nbits: number of bits in the bitmap
+ *
+ * Require nbits % BITS_PER_LONG == 0.
+ */
+void bitmap_copy_le(void *dst, const unsigned long *src, int nbits)
+{
+ unsigned long *d = dst;
+ int i;
+
+ for (i = 0; i < nbits/BITS_PER_LONG; i++) {
+ if (BITS_PER_LONG == 64)
+ d[i] = cpu_to_le64(src[i]);
+ else
+ d[i] = cpu_to_le32(src[i]);
+ }
+}
+EXPORT_SYMBOL(bitmap_copy_le);
int node;
if (unlikely((cont->parent) == NULL)) {
- page_cgroup_init();
mem = &init_mem_cgroup;
} else {
mem = mem_cgroup_alloc();
#include <linux/bit_spinlock.h>
#include <linux/page_cgroup.h>
#include <linux/hash.h>
+#include <linux/slab.h>
#include <linux/memory.h>
+#include <linux/vmalloc.h>
+#include <linux/cgroup.h>
static void __meminit
__init_page_cgroup(struct page_cgroup *pc, unsigned long pfn)
int nid, fail;
+ if (mem_cgroup_subsys.disabled)
+ return;
+
for_each_online_node(nid) {
fail = alloc_node_page_cgroup(nid);
if (fail)
nid = page_to_nid(pfn_to_page(pfn));
table_size = sizeof(struct page_cgroup) * PAGES_PER_SECTION;
- base = kmalloc_node(table_size, GFP_KERNEL, nid);
- if (!base)
- base = vmalloc_node(table_size, nid);
+ if (slab_is_available()) {
+ base = kmalloc_node(table_size, GFP_KERNEL, nid);
+ if (!base)
+ base = vmalloc_node(table_size, nid);
+ } else {
+ base = __alloc_bootmem_node_nopanic(NODE_DATA(nid), table_size,
+ PAGE_SIZE, __pa(MAX_DMA_ADDRESS));
+ }
if (!base) {
printk(KERN_ERR "page cgroup allocation failure\n");
if (!ms || !ms->page_cgroup)
return;
base = ms->page_cgroup + pfn;
- ms->page_cgroup = NULL;
- if (is_vmalloc_addr(base))
+ if (is_vmalloc_addr(base)) {
vfree(base);
- else
- kfree(base);
+ ms->page_cgroup = NULL;
+ } else {
+ struct page *page = virt_to_page(base);
+ if (!PageReserved(page)) { /* Is bootmem ? */
+ kfree(base);
+ ms->page_cgroup = NULL;
+ }
+ }
}
int online_page_cgroup(unsigned long start_pfn,
unsigned long pfn;
int fail = 0;
+ if (mem_cgroup_subsys.disabled)
+ return;
+
for (pfn = 0; !fail && pfn < max_pfn; pfn += PAGES_PER_SECTION) {
if (!pfn_present(pfn))
continue;
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff