*
* (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
* (C) Copyright 2000-2004 David Brownell <dbrownell@users.sourceforge.net>
- *
+ *
* [ Initialisation is based on Linus' ]
* [ uhci code and gregs ohci fragments ]
* [ (C) Copyright 1999 Linus Torvalds ]
* [ (C) Copyright 1999 Gregory P. Smith]
- *
- *
+ *
+ *
* OHCI is the main "non-Intel/VIA" standard for USB 1.1 host controller
* interfaces (though some non-x86 Intel chips use it). It supports
* smarter hardware than UHCI. A download link for the spec available
* through the http://www.usb.org website.
*
- * History:
- *
- * 2004/03/24 LH7A404 support (Durgesh Pattamatta & Marc Singer)
- * 2004/02/04 use generic dma_* functions instead of pci_* (dsaxena@plexity.net)
- * 2003/02/24 show registers in sysfs (Kevin Brosius)
- *
- * 2002/09/03 get rid of ed hashtables, rework periodic scheduling and
- * bandwidth accounting; if debugging, show schedules in driverfs
- * 2002/07/19 fixes to management of ED and schedule state.
- * 2002/06/09 SA-1111 support (Christopher Hoover)
- * 2002/06/01 remember frame when HC won't see EDs any more; use that info
- * to fix urb unlink races caused by interrupt latency assumptions;
- * minor ED field and function naming updates
- * 2002/01/18 package as a patch for 2.5.3; this should match the
- * 2.4.17 kernel modulo some bugs being fixed.
- *
- * 2001/10/18 merge pmac cleanup (Benjamin Herrenschmidt) and bugfixes
- * from post-2.4.5 patches.
- * 2001/09/20 URB_ZERO_PACKET support; hcca_dma portability, OPTi warning
- * 2001/09/07 match PCI PM changes, errnos from Linus' tree
- * 2001/05/05 fork 2.4.5 version into "hcd" framework, cleanup, simplify;
- * pbook pci quirks gone (please fix pbook pci sw!) (db)
- *
- * 2001/04/08 Identify version on module load (gb)
- * 2001/03/24 td/ed hashing to remove bus_to_virt (Steve Longerbeam);
- pci_map_single (db)
- * 2001/03/21 td and dev/ed allocation uses new pci_pool API (db)
- * 2001/03/07 hcca allocation uses pci_alloc_consistent (Steve Longerbeam)
- *
- * 2000/09/26 fixed races in removing the private portion of the urb
- * 2000/09/07 disable bulk and control lists when unlinking the last
- * endpoint descriptor in order to avoid unrecoverable errors on
- * the Lucent chips. (rwc@sgi)
- * 2000/08/29 use bandwidth claiming hooks (thanks Randy!), fix some
- * urb unlink probs, indentation fixes
- * 2000/08/11 various oops fixes mostly affecting iso and cleanup from
- * device unplugs.
- * 2000/06/28 use PCI hotplug framework, for better power management
- * and for Cardbus support (David Brownell)
- * 2000/earlier: fixes for NEC/Lucent chips; suspend/resume handling
- * when the controller loses power; handle UE; cleanup; ...
- *
- * v5.2 1999/12/07 URB 3rd preview,
- * v5.1 1999/11/30 URB 2nd preview, cpia, (usb-scsi)
- * v5.0 1999/11/22 URB Technical preview, Paul Mackerras powerbook susp/resume
- * i386: HUB, Keyboard, Mouse, Printer
- *
- * v4.3 1999/10/27 multiple HCs, bulk_request
- * v4.2 1999/09/05 ISO API alpha, new dev alloc, neg Error-codes
- * v4.1 1999/08/27 Randy Dunlap's - ISO API first impl.
- * v4.0 1999/08/18
- * v3.0 1999/06/25
- * v2.1 1999/05/09 code clean up
- * v2.0 1999/05/04
- * v1.0 1999/04/27 initial release
- *
* This file is licenced under the GPL.
*/
-
-#include <linux/config.h>
-
-#ifdef CONFIG_USB_DEBUG
-# define DEBUG
-#else
-# undef DEBUG
-#endif
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/ioport.h>
#include <linux/sched.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/timer.h>
#include <linux/list.h>
#include <linux/usb.h>
-#include <linux/usb_otg.h>
-#include <linux/dma-mapping.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
#include <linux/dmapool.h>
#include <linux/reboot.h>
+#include <linux/workqueue.h>
#include <asm/io.h>
#include <asm/irq.h>
#include "../core/hcd.h"
-#define DRIVER_VERSION "2005 April 22"
+#define DRIVER_VERSION "2006 August 04"
#define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell"
#define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver"
/*-------------------------------------------------------------------------*/
-// #define OHCI_VERBOSE_DEBUG /* not always helpful */
+#undef OHCI_VERBOSE_DEBUG /* not always helpful */
/* For initializing controller (mask in an HCFS mode too) */
-#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
+#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
#define OHCI_INTR_INIT \
- (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_WDH)
+ (OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE \
+ | OHCI_INTR_RD | OHCI_INTR_WDH)
#ifdef __hppa__
/* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */
static const char hcd_name [] = "ohci_hcd";
+#define STATECHANGE_DELAY msecs_to_jiffies(300)
+
#include "ohci.h"
static void ohci_dump (struct ohci_hcd *ohci, int verbose);
static int ohci_init (struct ohci_hcd *ohci);
static void ohci_stop (struct usb_hcd *hcd);
-static int ohci_reboot (struct notifier_block *, unsigned long , void *);
+static int ohci_restart (struct ohci_hcd *ohci);
#include "ohci-hub.c"
#include "ohci-dbg.c"
*/
static int ohci_urb_enqueue (
struct usb_hcd *hcd,
- struct usb_host_endpoint *ep,
struct urb *urb,
- int mem_flags
+ gfp_t mem_flags
) {
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
struct ed *ed;
int i, size = 0;
unsigned long flags;
int retval = 0;
-
+
#ifdef OHCI_VERBOSE_DEBUG
- urb_print (urb, "SUB", usb_pipein (pipe));
+ urb_print(urb, "SUB", usb_pipein(pipe), -EINPROGRESS);
#endif
-
+
/* every endpoint has a ed, locate and maybe (re)initialize it */
- if (! (ed = ed_get (ohci, ep, urb->dev, pipe, urb->interval)))
+ if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
return -ENOMEM;
/* for the private part of the URB we need the number of TDs (size) */
}
/* allocate the private part of the URB */
- urb_priv = kmalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
+ urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
mem_flags);
if (!urb_priv)
return -ENOMEM;
- memset (urb_priv, 0, sizeof (urb_priv_t) + size * sizeof (struct td *));
INIT_LIST_HEAD (&urb_priv->pending);
urb_priv->length = size;
- urb_priv->ed = ed;
+ urb_priv->ed = ed;
/* allocate the TDs (deferring hash chain updates) */
for (i = 0; i < size; i++) {
urb_free_priv (ohci, urb_priv);
return -ENOMEM;
}
- }
+ }
spin_lock_irqsave (&ohci->lock, flags);
/* don't submit to a dead HC */
- if (!HC_IS_RUNNING(hcd->state)) {
+ if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
retval = -ENODEV;
goto fail;
}
-
- /* in case of unlink-during-submit */
- spin_lock (&urb->lock);
- if (urb->status != -EINPROGRESS) {
- spin_unlock (&urb->lock);
- urb->hcpriv = urb_priv;
- finish_urb (ohci, urb, NULL);
- retval = 0;
+ if (!HC_IS_RUNNING(hcd->state)) {
+ retval = -ENODEV;
goto fail;
}
+ retval = usb_hcd_link_urb_to_ep(hcd, urb);
+ if (retval)
+ goto fail;
/* schedule the ed if needed */
if (ed->state == ED_IDLE) {
retval = ed_schedule (ohci, ed);
- if (retval < 0)
- goto fail0;
+ if (retval < 0) {
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+ goto fail;
+ }
if (ed->type == PIPE_ISOCHRONOUS) {
u16 frame = ohci_frame_no(ohci);
urb->hcpriv = urb_priv;
td_submit_urb (ohci, urb);
-fail0:
- spin_unlock (&urb->lock);
fail:
if (retval)
urb_free_priv (ohci, urb_priv);
}
/*
- * decouple the URB from the HC queues (TDs, urb_priv); it's
- * already marked using urb->status. reporting is always done
+ * decouple the URB from the HC queues (TDs, urb_priv).
+ * reporting is always done
* asynchronously, and we might be dealing with an urb that's
* partially transferred, or an ED with other urbs being unlinked.
*/
-static int ohci_urb_dequeue (struct usb_hcd *hcd, struct urb *urb)
+static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
unsigned long flags;
-
+ int rc;
+
#ifdef OHCI_VERBOSE_DEBUG
- urb_print (urb, "UNLINK", 1);
-#endif
+ urb_print(urb, "UNLINK", 1, status);
+#endif
spin_lock_irqsave (&ohci->lock, flags);
- if (HC_IS_RUNNING(hcd->state)) {
+ rc = usb_hcd_check_unlink_urb(hcd, urb, status);
+ if (rc) {
+ ; /* Do nothing */
+ } else if (HC_IS_RUNNING(hcd->state)) {
urb_priv_t *urb_priv;
/* Unless an IRQ completed the unlink while it was being
* any more ... just clean up every urb's memory.
*/
if (urb->hcpriv)
- finish_urb (ohci, urb, NULL);
+ finish_urb(ohci, urb, status);
}
spin_unlock_irqrestore (&ohci->lock, flags);
- return 0;
+ return rc;
}
/*-------------------------------------------------------------------------*/
if (!HC_IS_RUNNING (hcd->state)) {
sanitize:
ed->state = ED_IDLE;
- finish_unlinks (ohci, 0, NULL);
+ if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
+ ohci->eds_scheduled--;
+ finish_unlinks (ohci, 0);
}
switch (ed->state) {
case ED_UNLINK: /* wait for hw to finish? */
/* major IRQ delivery trouble loses INTR_SF too... */
if (limit-- == 0) {
- ohci_warn (ohci, "IRQ INTR_SF lossage\n");
+ ohci_warn(ohci, "ED unlink timeout\n");
+ if (quirk_zfmicro(ohci)) {
+ ohci_warn(ohci, "Attempting ZF TD recovery\n");
+ ohci->ed_to_check = ed;
+ ohci->zf_delay = 2;
+ }
goto sanitize;
}
spin_unlock_irqrestore (&ohci->lock, flags);
- set_current_state (TASK_UNINTERRUPTIBLE);
- schedule_timeout (1);
+ schedule_timeout_uninterruptible(1);
goto rescan;
case ED_IDLE: /* fully unlinked */
if (list_empty (&ed->td_list)) {
ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
}
-/* reboot notifier forcibly disables IRQs and DMA, helping kexec and
+/* ohci_shutdown forcibly disables IRQs and DMA, helping kexec and
* other cases where the next software may expect clean state from the
* "firmware". this is bus-neutral, unlike shutdown() methods.
*/
-static int
-ohci_reboot (struct notifier_block *block, unsigned long code, void *null)
+static void
+ohci_shutdown (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci;
- ohci = container_of (block, struct ohci_hcd, reboot_notifier);
+ ohci = hcd_to_ohci (hcd);
ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
ohci_usb_reset (ohci);
/* flush the writes */
(void) ohci_readl (ohci, &ohci->regs->control);
- return 0;
+}
+
+static int check_ed(struct ohci_hcd *ohci, struct ed *ed)
+{
+ return (hc32_to_cpu(ohci, ed->hwINFO) & ED_IN) != 0
+ && (hc32_to_cpu(ohci, ed->hwHeadP) & TD_MASK)
+ == (hc32_to_cpu(ohci, ed->hwTailP) & TD_MASK)
+ && !list_empty(&ed->td_list);
+}
+
+/* ZF Micro watchdog timer callback. The ZF Micro chipset sometimes completes
+ * an interrupt TD but neglects to add it to the donelist. On systems with
+ * this chipset, we need to periodically check the state of the queues to look
+ * for such "lost" TDs.
+ */
+static void unlink_watchdog_func(unsigned long _ohci)
+{
+ long flags;
+ unsigned max;
+ unsigned seen_count = 0;
+ unsigned i;
+ struct ed **seen = NULL;
+ struct ohci_hcd *ohci = (struct ohci_hcd *) _ohci;
+
+ spin_lock_irqsave(&ohci->lock, flags);
+ max = ohci->eds_scheduled;
+ if (!max)
+ goto done;
+
+ if (ohci->ed_to_check)
+ goto out;
+
+ seen = kcalloc(max, sizeof *seen, GFP_ATOMIC);
+ if (!seen)
+ goto out;
+
+ for (i = 0; i < NUM_INTS; i++) {
+ struct ed *ed = ohci->periodic[i];
+
+ while (ed) {
+ unsigned temp;
+
+ /* scan this branch of the periodic schedule tree */
+ for (temp = 0; temp < seen_count; temp++) {
+ if (seen[temp] == ed) {
+ /* we've checked it and what's after */
+ ed = NULL;
+ break;
+ }
+ }
+ if (!ed)
+ break;
+ seen[seen_count++] = ed;
+ if (!check_ed(ohci, ed)) {
+ ed = ed->ed_next;
+ continue;
+ }
+
+ /* HC's TD list is empty, but HCD sees at least one
+ * TD that's not been sent through the donelist.
+ */
+ ohci->ed_to_check = ed;
+ ohci->zf_delay = 2;
+
+ /* The HC may wait until the next frame to report the
+ * TD as done through the donelist and INTR_WDH. (We
+ * just *assume* it's not a multi-TD interrupt URB;
+ * those could defer the IRQ more than one frame, using
+ * DI...) Check again after the next INTR_SF.
+ */
+ ohci_writel(ohci, OHCI_INTR_SF,
+ &ohci->regs->intrstatus);
+ ohci_writel(ohci, OHCI_INTR_SF,
+ &ohci->regs->intrenable);
+
+ /* flush those writes */
+ (void) ohci_readl(ohci, &ohci->regs->control);
+
+ goto out;
+ }
+ }
+out:
+ kfree(seen);
+ if (ohci->eds_scheduled)
+ mod_timer(&ohci->unlink_watchdog, round_jiffies_relative(HZ));
+done:
+ spin_unlock_irqrestore(&ohci->lock, flags);
}
/*-------------------------------------------------------------------------*
static int ohci_init (struct ohci_hcd *ohci)
{
int ret;
+ struct usb_hcd *hcd = ohci_to_hcd(ohci);
disable (ohci);
- ohci->regs = ohci_to_hcd(ohci)->regs;
- ohci->next_statechange = jiffies;
+ ohci->regs = hcd->regs;
+
+ /* REVISIT this BIOS handshake is now moved into PCI "quirks", and
+ * was never needed for most non-PCI systems ... remove the code?
+ */
#ifndef IR_DISABLE
/* SMM owns the HC? not for long! */
/* Disable HC interrupts */
ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
- // flush the writes
- (void) ohci_readl (ohci, &ohci->regs->control);
+
+ /* flush the writes, and save key bits like RWC */
+ if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
+ ohci->hc_control |= OHCI_CTRL_RWC;
+
+ /* Read the number of ports unless overridden */
+ if (ohci->num_ports == 0)
+ ohci->num_ports = roothub_a(ohci) & RH_A_NDP;
if (ohci->hcca)
return 0;
- ohci->hcca = dma_alloc_coherent (ohci_to_hcd(ohci)->self.controller,
+ ohci->hcca = dma_alloc_coherent (hcd->self.controller,
sizeof *ohci->hcca, &ohci->hcca_dma, 0);
if (!ohci->hcca)
return -ENOMEM;
if ((ret = ohci_mem_init (ohci)) < 0)
- ohci_stop (ohci_to_hcd(ohci));
+ ohci_stop (hcd);
+ else {
+ create_debug_files (ohci);
+ }
return ret;
-
}
/*-------------------------------------------------------------------------*/
/* Start an OHCI controller, set the BUS operational
* resets USB and controller
- * enable interrupts
- * connect the virtual root hub
+ * enable interrupts
*/
static int ohci_run (struct ohci_hcd *ohci)
{
- u32 mask, temp;
- struct usb_device *udev;
- struct usb_bus *bus;
+ u32 mask, temp;
int first = ohci->fminterval == 0;
+ struct usb_hcd *hcd = ohci_to_hcd(ohci);
disable (ohci);
/* also: power/overcurrent flags in roothub.a */
}
- /* Reset USB nearly "by the book". RemoteWakeupConnected
- * saved if boot firmware (BIOS/SMM/...) told us it's connected
- * (for OHCI integrated on mainboard, it normally is)
+ /* Reset USB nearly "by the book". RemoteWakeupConnected was
+ * saved if boot firmware (BIOS/SMM/...) told us it's connected,
+ * or if bus glue did the same (e.g. for PCI add-in cards with
+ * PCI PM support).
*/
- ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
- ohci_dbg (ohci, "resetting from state '%s', control = 0x%x\n",
- hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
- ohci->hc_control);
-
- if (ohci->hc_control & OHCI_CTRL_RWC
- && !(ohci->flags & OHCI_QUIRK_AMD756))
- ohci_to_hcd(ohci)->can_wakeup = 1;
+ if ((ohci->hc_control & OHCI_CTRL_RWC) != 0
+ && !device_may_wakeup(hcd->self.controller))
+ device_init_wakeup(hcd->self.controller, 1);
switch (ohci->hc_control & OHCI_CTRL_HCFS) {
case OHCI_USB_OPER:
// flush the writes
(void) ohci_readl (ohci, &ohci->regs->control);
msleep(temp);
- temp = roothub_a (ohci);
- if (!(temp & RH_A_NPS)) {
- unsigned ports = temp & RH_A_NDP;
- /* power down each port */
- for (temp = 0; temp < ports; temp++)
- ohci_writel (ohci, RH_PS_LSDA,
- &ohci->regs->roothub.portstatus [temp]);
- }
- // flush those writes
- (void) ohci_readl (ohci, &ohci->regs->control);
memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
/* 2msec timelimit here means no irqs/preempt */
return -EOVERFLOW;
}
- /* start controller operations */
+ /* use rhsc irqs after khubd is fully initialized */
+ hcd->poll_rh = 1;
+ hcd->uses_new_polling = 1;
+
+ /* start controller operations */
ohci->hc_control &= OHCI_CTRL_RWC;
- ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
- ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+ ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
+ ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
+ hcd->state = HC_STATE_RUNNING;
/* wake on ConnectStatusChange, matching external hubs */
ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
/* Choose the interrupts we care about now, others later on demand */
mask = OHCI_INTR_INIT;
- ohci_writel (ohci, mask, &ohci->regs->intrstatus);
+ ohci_writel (ohci, ~0, &ohci->regs->intrstatus);
ohci_writel (ohci, mask, &ohci->regs->intrenable);
/* handle root hub init quirks ... */
// flush those writes
(void) ohci_readl (ohci, &ohci->regs->control);
+ ohci->next_statechange = jiffies + STATECHANGE_DELAY;
spin_unlock_irq (&ohci->lock);
// POTPGT delay is bits 24-31, in 2 ms units.
mdelay ((temp >> 23) & 0x1fe);
- bus = &ohci_to_hcd(ohci)->self;
- ohci_to_hcd(ohci)->state = HC_STATE_RUNNING;
+ hcd->state = HC_STATE_RUNNING;
- ohci_dump (ohci, 1);
+ if (quirk_zfmicro(ohci)) {
+ /* Create timer to watch for bad queue state on ZF Micro */
+ setup_timer(&ohci->unlink_watchdog, unlink_watchdog_func,
+ (unsigned long) ohci);
- udev = bus->root_hub;
- if (udev) {
- return 0;
- }
-
- /* connect the virtual root hub */
- udev = usb_alloc_dev (NULL, bus, 0);
- if (!udev) {
- disable (ohci);
- ohci->hc_control &= ~OHCI_CTRL_HCFS;
- ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- return -ENOMEM;
+ ohci->eds_scheduled = 0;
+ ohci->ed_to_check = NULL;
}
- udev->speed = USB_SPEED_FULL;
- if (usb_hcd_register_root_hub (udev, ohci_to_hcd(ohci)) != 0) {
- usb_put_dev (udev);
- disable (ohci);
- ohci->hc_control &= ~OHCI_CTRL_HCFS;
- ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
- return -ENODEV;
- }
- if (ohci->power_budget)
- hub_set_power_budget(udev, ohci->power_budget);
+ ohci_dump (ohci, 1);
- register_reboot_notifier (&ohci->reboot_notifier);
- create_debug_files (ohci);
return 0;
}
/* an interrupt happens */
-static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs)
+static irqreturn_t ohci_irq (struct usb_hcd *hcd)
{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
struct ohci_regs __iomem *regs = ohci->regs;
- int ints;
+ int ints;
/* we can eliminate a (slow) ohci_readl()
- if _only_ WDH caused this irq */
+ * if _only_ WDH caused this irq
+ */
if ((ohci->hcca->done_head != 0)
&& ! (hc32_to_cpup (ohci, &ohci->hcca->done_head)
& 0x01)) {
/* interrupt for some other device? */
} else if ((ints &= ohci_readl (ohci, ®s->intrenable)) == 0) {
return IRQ_NOTMINE;
- }
+ }
if (ints & OHCI_INTR_UE) {
- disable (ohci);
- ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
// e.g. due to PCI Master/Target Abort
+ if (quirk_nec(ohci)) {
+ /* Workaround for a silicon bug in some NEC chips used
+ * in Apple's PowerBooks. Adapted from Darwin code.
+ */
+ ohci_err (ohci, "OHCI Unrecoverable Error, scheduling NEC chip restart\n");
+
+ ohci_writel (ohci, OHCI_INTR_UE, ®s->intrdisable);
+
+ schedule_work (&ohci->nec_work);
+ } else {
+ disable (ohci);
+ ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
+ }
ohci_dump (ohci, 1);
ohci_usb_reset (ohci);
}
- if (ints & OHCI_INTR_RD) {
- ohci_vdbg (ohci, "resume detect\n");
- if (hcd->state != HC_STATE_QUIESCING)
- schedule_work(&ohci->rh_resume);
+ if (ints & OHCI_INTR_RHSC) {
+ ohci_vdbg(ohci, "rhsc\n");
+ ohci->next_statechange = jiffies + STATECHANGE_DELAY;
+ ohci_writel(ohci, OHCI_INTR_RD | OHCI_INTR_RHSC,
+ ®s->intrstatus);
+
+ /* NOTE: Vendors didn't always make the same implementation
+ * choices for RHSC. Many followed the spec; RHSC triggers
+ * on an edge, like setting and maybe clearing a port status
+ * change bit. With others it's level-triggered, active
+ * until khubd clears all the port status change bits. We'll
+ * always disable it here and rely on polling until khubd
+ * re-enables it.
+ */
+ ohci_writel(ohci, OHCI_INTR_RHSC, ®s->intrdisable);
+ usb_hcd_poll_rh_status(hcd);
+ }
+
+ /* For connect and disconnect events, we expect the controller
+ * to turn on RHSC along with RD. But for remote wakeup events
+ * this might not happen.
+ */
+ else if (ints & OHCI_INTR_RD) {
+ ohci_vdbg(ohci, "resume detect\n");
+ ohci_writel(ohci, OHCI_INTR_RD, ®s->intrstatus);
+ hcd->poll_rh = 1;
+ if (ohci->autostop) {
+ spin_lock (&ohci->lock);
+ ohci_rh_resume (ohci);
+ spin_unlock (&ohci->lock);
+ } else
+ usb_hcd_resume_root_hub(hcd);
}
if (ints & OHCI_INTR_WDH) {
if (HC_IS_RUNNING(hcd->state))
- ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrdisable);
+ ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrdisable);
spin_lock (&ohci->lock);
- dl_done_list (ohci, ptregs);
+ dl_done_list (ohci);
spin_unlock (&ohci->lock);
if (HC_IS_RUNNING(hcd->state))
- ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrenable);
+ ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrenable);
}
-
+
+ if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) {
+ spin_lock(&ohci->lock);
+ if (ohci->ed_to_check) {
+ struct ed *ed = ohci->ed_to_check;
+
+ if (check_ed(ohci, ed)) {
+ /* HC thinks the TD list is empty; HCD knows
+ * at least one TD is outstanding
+ */
+ if (--ohci->zf_delay == 0) {
+ struct td *td = list_entry(
+ ed->td_list.next,
+ struct td, td_list);
+ ohci_warn(ohci,
+ "Reclaiming orphan TD %p\n",
+ td);
+ takeback_td(ohci, td);
+ ohci->ed_to_check = NULL;
+ }
+ } else
+ ohci->ed_to_check = NULL;
+ }
+ spin_unlock(&ohci->lock);
+ }
+
/* could track INTR_SO to reduce available PCI/... bandwidth */
/* handle any pending URB/ED unlinks, leaving INTR_SF enabled
*/
spin_lock (&ohci->lock);
if (ohci->ed_rm_list)
- finish_unlinks (ohci, ohci_frame_no(ohci), ptregs);
- if ((ints & OHCI_INTR_SF) != 0 && !ohci->ed_rm_list
+ finish_unlinks (ohci, ohci_frame_no(ohci));
+ if ((ints & OHCI_INTR_SF) != 0
+ && !ohci->ed_rm_list
+ && !ohci->ed_to_check
&& HC_IS_RUNNING(hcd->state))
- ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable);
+ ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable);
spin_unlock (&ohci->lock);
if (HC_IS_RUNNING(hcd->state)) {
ohci_writel (ohci, ints, ®s->intrstatus);
- ohci_writel (ohci, OHCI_INTR_MIE, ®s->intrenable);
+ ohci_writel (ohci, OHCI_INTR_MIE, ®s->intrenable);
// flush those writes
(void) ohci_readl (ohci, &ohci->regs->control);
}
/*-------------------------------------------------------------------------*/
static void ohci_stop (struct usb_hcd *hcd)
-{
+{
struct ohci_hcd *ohci = hcd_to_ohci (hcd);
- ohci_dbg (ohci, "stop %s controller (state 0x%02x)\n",
- hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS),
- hcd->state);
ohci_dump (ohci, 1);
flush_scheduled_work();
ohci_usb_reset (ohci);
ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
-
+ free_irq(hcd->irq, hcd);
+ hcd->irq = -1;
+
+ if (quirk_zfmicro(ohci))
+ del_timer(&ohci->unlink_watchdog);
+
remove_debug_files (ohci);
- unregister_reboot_notifier (&ohci->reboot_notifier);
ohci_mem_cleanup (ohci);
if (ohci->hcca) {
- dma_free_coherent (hcd->self.controller,
- sizeof *ohci->hcca,
+ dma_free_coherent (hcd->self.controller,
+ sizeof *ohci->hcca,
ohci->hcca, ohci->hcca_dma);
ohci->hcca = NULL;
ohci->hcca_dma = 0;
/*-------------------------------------------------------------------------*/
/* must not be called from interrupt context */
-
-#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM)
-
static int ohci_restart (struct ohci_hcd *ohci)
{
int temp;
int i;
struct urb_priv *priv;
- struct usb_device *root = ohci_to_hcd(ohci)->self.root_hub;
- /* mark any devices gone, so they do nothing till khubd disconnects.
- * recycle any "live" eds/tds (and urbs) right away.
- * later, khubd disconnect processing will recycle the other state,
- * (either as disconnect/reconnect, or maybe someday as a reset).
- */
spin_lock_irq(&ohci->lock);
disable (ohci);
- for (i = 0; i < root->maxchild; i++) {
- if (root->children [i])
- usb_set_device_state (root->children[i],
- USB_STATE_NOTATTACHED);
- }
+
+ /* Recycle any "live" eds/tds (and urbs). */
if (!list_empty (&ohci->pending))
ohci_dbg(ohci, "abort schedule...\n");
list_for_each_entry (priv, &ohci->pending, pending) {
ed, ed->state);
}
- spin_lock (&urb->lock);
- urb->status = -ESHUTDOWN;
- spin_unlock (&urb->lock);
+ if (!urb->unlinked)
+ urb->unlinked = -ESHUTDOWN;
}
- finish_unlinks (ohci, 0, NULL);
+ finish_unlinks (ohci, 0);
spin_unlock_irq(&ohci->lock);
/* paranoia, in case that didn't work: */
/* empty the interrupt branches */
for (i = 0; i < NUM_INTS; i++) ohci->load [i] = 0;
for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table [i] = 0;
-
+
/* no EDs to remove */
ohci->ed_rm_list = NULL;
- /* empty control and bulk lists */
+ /* empty control and bulk lists */
ohci->ed_controltail = NULL;
ohci->ed_bulktail = NULL;
if ((temp = ohci_run (ohci)) < 0) {
ohci_err (ohci, "can't restart, %d\n", temp);
return temp;
- } else {
- /* here we "know" root ports should always stay powered,
- * and that if we try to turn them back on the root hub
- * will respond to CSC processing.
- */
- i = roothub_a (ohci) & RH_A_NDP;
- while (i--)
- ohci_writel (ohci, RH_PS_PSS,
- &ohci->regs->roothub.portstatus [temp]);
- ohci_dbg (ohci, "restart complete\n");
}
+ ohci_dbg(ohci, "restart complete\n");
return 0;
}
-#endif
/*-------------------------------------------------------------------------*/
#ifdef CONFIG_PCI
#include "ohci-pci.c"
+#define PCI_DRIVER ohci_pci_driver
#endif
#ifdef CONFIG_SA1111
#include "ohci-sa1111.c"
+#define SA1111_DRIVER ohci_hcd_sa1111_driver
+#endif
+
+#ifdef CONFIG_ARCH_S3C2410
+#include "ohci-s3c2410.c"
+#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
#endif
#ifdef CONFIG_ARCH_OMAP
#include "ohci-omap.c"
+#define PLATFORM_DRIVER ohci_hcd_omap_driver
#endif
#ifdef CONFIG_ARCH_LH7A404
#include "ohci-lh7a404.c"
+#define PLATFORM_DRIVER ohci_hcd_lh7a404_driver
#endif
#ifdef CONFIG_PXA27x
#include "ohci-pxa27x.c"
+#define PLATFORM_DRIVER ohci_hcd_pxa27x_driver
+#endif
+
+#ifdef CONFIG_ARCH_EP93XX
+#include "ohci-ep93xx.c"
+#define PLATFORM_DRIVER ohci_hcd_ep93xx_driver
#endif
#ifdef CONFIG_SOC_AU1X00
#include "ohci-au1xxx.c"
+#define PLATFORM_DRIVER ohci_hcd_au1xxx_driver
+#endif
+
+#ifdef CONFIG_PNX8550
+#include "ohci-pnx8550.c"
+#define PLATFORM_DRIVER ohci_hcd_pnx8550_driver
#endif
#ifdef CONFIG_USB_OHCI_HCD_PPC_SOC
#include "ohci-ppc-soc.c"
+#define PLATFORM_DRIVER ohci_hcd_ppc_soc_driver
#endif
-#if !(defined(CONFIG_PCI) \
- || defined(CONFIG_SA1111) \
- || defined(CONFIG_ARCH_OMAP) \
- || defined (CONFIG_ARCH_LH7A404) \
- || defined (CONFIG_PXA27x) \
- || defined (CONFIG_SOC_AU1X00) \
- || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \
- )
+#ifdef CONFIG_ARCH_AT91
+#include "ohci-at91.c"
+#define PLATFORM_DRIVER ohci_hcd_at91_driver
+#endif
+
+#ifdef CONFIG_ARCH_PNX4008
+#include "ohci-pnx4008.c"
+#define PLATFORM_DRIVER usb_hcd_pnx4008_driver
+#endif
+
+
+#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
+#include "ohci-ppc-of.c"
+#define OF_PLATFORM_DRIVER ohci_hcd_ppc_of_driver
+#endif
+
+#ifdef CONFIG_PPC_PS3
+#include "ohci-ps3.c"
+#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
+#endif
+
+#ifdef CONFIG_USB_OHCI_HCD_SSB
+#include "ohci-ssb.c"
+#define SSB_OHCI_DRIVER ssb_ohci_driver
+#endif
+
+#if !defined(PCI_DRIVER) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(OF_PLATFORM_DRIVER) && \
+ !defined(SA1111_DRIVER) && \
+ !defined(PS3_SYSTEM_BUS_DRIVER) && \
+ !defined(SSB_OHCI_DRIVER)
#error "missing bus glue for ohci-hcd"
#endif
+
+static int __init ohci_hcd_mod_init(void)
+{
+ int retval = 0;
+
+ if (usb_disabled())
+ return -ENODEV;
+
+ printk (KERN_DEBUG "%s: " DRIVER_INFO "\n", hcd_name);
+ pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
+ sizeof (struct ed), sizeof (struct td));
+
+#ifdef PS3_SYSTEM_BUS_DRIVER
+ retval = ps3_ohci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
+ if (retval < 0)
+ goto error_ps3;
+#endif
+
+#ifdef PLATFORM_DRIVER
+ retval = platform_driver_register(&PLATFORM_DRIVER);
+ if (retval < 0)
+ goto error_platform;
+#endif
+
+#ifdef OF_PLATFORM_DRIVER
+ retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
+ if (retval < 0)
+ goto error_of_platform;
+#endif
+
+#ifdef SA1111_DRIVER
+ retval = sa1111_driver_register(&SA1111_DRIVER);
+ if (retval < 0)
+ goto error_sa1111;
+#endif
+
+#ifdef PCI_DRIVER
+ retval = pci_register_driver(&PCI_DRIVER);
+ if (retval < 0)
+ goto error_pci;
+#endif
+
+#ifdef SSB_OHCI_DRIVER
+ retval = ssb_driver_register(&SSB_OHCI_DRIVER);
+ if (retval)
+ goto error_ssb;
+#endif
+
+ return retval;
+
+ /* Error path */
+#ifdef SSB_OHCI_DRIVER
+ error_ssb:
+#endif
+#ifdef PCI_DRIVER
+ pci_unregister_driver(&PCI_DRIVER);
+ error_pci:
+#endif
+#ifdef SA1111_DRIVER
+ sa1111_driver_unregister(&SA1111_DRIVER);
+ error_sa1111:
+#endif
+#ifdef OF_PLATFORM_DRIVER
+ of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+ error_of_platform:
+#endif
+#ifdef PLATFORM_DRIVER
+ platform_driver_unregister(&PLATFORM_DRIVER);
+ error_platform:
+#endif
+#ifdef PS3_SYSTEM_BUS_DRIVER
+ ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
+ error_ps3:
+#endif
+ return retval;
+}
+module_init(ohci_hcd_mod_init);
+
+static void __exit ohci_hcd_mod_exit(void)
+{
+#ifdef SSB_OHCI_DRIVER
+ ssb_driver_unregister(&SSB_OHCI_DRIVER);
+#endif
+#ifdef PCI_DRIVER
+ pci_unregister_driver(&PCI_DRIVER);
+#endif
+#ifdef SA1111_DRIVER
+ sa1111_driver_unregister(&SA1111_DRIVER);
+#endif
+#ifdef OF_PLATFORM_DRIVER
+ of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
+#endif
+#ifdef PLATFORM_DRIVER
+ platform_driver_unregister(&PLATFORM_DRIVER);
+#endif
+#ifdef PS3_SYSTEM_BUS_DRIVER
+ ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
+#endif
+}
+module_exit(ohci_hcd_mod_exit);
+
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff