#
# PCI configuration
#
+config ARCH_SUPPORTS_MSI
+ bool
+ default n
+
config PCI_MSI
bool "Message Signaled Interrupts (MSI and MSI-X)"
depends on PCI
- depends on (X86_LOCAL_APIC && X86_IO_APIC) || IA64
+ depends on ARCH_SUPPORTS_MSI
help
This allows device drivers to enable MSI (Message Signaled
Interrupts). Message Signaled Interrupts enable a device to
generate an interrupt using an inbound Memory Write on its
PCI bus instead of asserting a device IRQ pin.
- If you don't know what to do here, say N.
-
-config PCI_LEGACY_PROC
- bool "Legacy /proc/pci interface"
- depends on PCI
- ---help---
- This feature enables a procfs file -- /proc/pci -- that provides a
- summary of PCI devices in the system.
-
- This feature has been deprecated as of v2.5.53, in favor of using the
- tool lspci(8). This feature may be removed at a future date.
-
- lspci can provide the same data, as well as much more. lspci is a part of
- the pci-utils package, which should be installed by your distribution.
- See <file:Documentation/Changes> for information on where to get the latest
- version.
+ Use of PCI MSI interrupts can be disabled at kernel boot time
+ by using the 'pci=nomsi' option. This disables MSI for the
+ entire system.
- When in doubt, say N.
+ If you don't know what to do here, say N.
-config PCI_NAMES
- bool "PCI device name database"
+config PCI_LEGACY
+ bool "Enable deprecated pci_find_* API"
depends on PCI
- ---help---
- By default, the kernel contains a database of all known PCI device
- names to make the information in /proc/pci, /proc/ioports and
- similar files comprehensible to the user.
-
- This database increases size of the kernel image by about 80KB. This
- memory is freed after the system boots up if CONFIG_HOTPLUG is not set.
-
- Anyway, if you are building an installation floppy or kernel for an
- embedded system where kernel image size really matters, you can disable
- this feature and you'll get device ID numbers instead of names.
-
- When in doubt, say Y.
+ default y
+ help
+ Say Y here if you want to include support for the deprecated
+ pci_find_slot() and pci_find_device() APIs. Most drivers have
+ been converted over to using the proper hotplug APIs, so this
+ option serves to include/exclude only a few drivers that are
+ still using this API.
config PCI_DEBUG
bool "PCI Debugging"
When in doubt, say N.
+config PCI_STUB
+ tristate "PCI Stub driver"
+ depends on PCI
+ help
+ Say Y or M here if you want be able to reserve a PCI device
+ when it is going to be assigned to a guest operating system.
+
+ When in doubt, say N.
+
+config HT_IRQ
+ bool "Interrupts on hypertransport devices"
+ default y
+ depends on PCI && X86_LOCAL_APIC && X86_IO_APIC
+ help
+ This allows native hypertransport devices to use interrupts.
+
+ If unsure say Y.
+
+config PCI_IOV
+ bool "PCI IOV support"
+ depends on PCI
+ help
+ I/O Virtualization is a PCI feature supported by some devices
+ which allows them to create virtual devices which share their
+ physical resources.
+
+ If unsure, say N.