diff options
Diffstat (limited to 'drivers/usb/host/ohci-hcd.c')
| -rw-r--r-- | drivers/usb/host/ohci-hcd.c | 951 |
1 files changed, 672 insertions, 279 deletions
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index d1d68c40225..f98d03f3144 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -1,79 +1,25 @@ /* - * OHCI HCD (Host Controller Driver) for USB. + * Open Host Controller Interface (OHCI) driver for USB. + * + * Maintainer: Alan Stern <stern@rowland.harvard.edu> * * (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/module.h> #include <linux/moduleparam.h> #include <linux/pci.h> @@ -82,33 +28,29 @@ #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/hcd.h> +#include <linux/dma-mapping.h> #include <linux/dmapool.h> -#include <linux/reboot.h> +#include <linux/workqueue.h> +#include <linux/debugfs.h> #include <asm/io.h> #include <asm/irq.h> -#include <asm/system.h> #include <asm/unaligned.h> #include <asm/byteorder.h> -#include "../core/hcd.h" -#define DRIVER_VERSION "2006 August 04" #define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell" #define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver" /*-------------------------------------------------------------------------*/ -#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_INTR_INIT \ @@ -132,9 +74,9 @@ static const char hcd_name [] = "ohci_hcd"; #define STATECHANGE_DELAY msecs_to_jiffies(300) #include "ohci.h" +#include "pci-quirks.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); #include "ohci-hub.c" @@ -155,13 +97,13 @@ static void ohci_stop (struct usb_hcd *hcd); /* Some boards misreport power switching/overcurrent */ -static int distrust_firmware = 1; +static bool distrust_firmware = 1; module_param (distrust_firmware, bool, 0); MODULE_PARM_DESC (distrust_firmware, "true to distrust firmware power/overcurrent setup"); /* Some boards leave IR set wrongly, since they fail BIOS/SMM handshakes */ -static int no_handshake = 0; +static bool no_handshake = 0; module_param (no_handshake, bool, 0); MODULE_PARM_DESC (no_handshake, "true (not default) disables BIOS handshake"); @@ -172,7 +114,6 @@ MODULE_PARM_DESC (no_handshake, "true (not default) disables BIOS handshake"); */ static int ohci_urb_enqueue ( struct usb_hcd *hcd, - struct usb_host_endpoint *ep, struct urb *urb, gfp_t mem_flags ) { @@ -183,13 +124,9 @@ static int ohci_urb_enqueue ( int i, size = 0; unsigned long flags; int retval = 0; - -#ifdef OHCI_VERBOSE_DEBUG - urb_print (urb, "SUB", usb_pipein (pipe)); -#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) */ @@ -205,7 +142,7 @@ static int ohci_urb_enqueue ( // case PIPE_INTERRUPT: // case PIPE_BULK: default: - /* one TD for every 4096 Bytes (can be upto 8K) */ + /* one TD for every 4096 Bytes (can be up to 8K) */ size += urb->transfer_buffer_length / 4096; /* ... and for any remaining bytes ... */ if ((urb->transfer_buffer_length % 4096) != 0) @@ -225,14 +162,13 @@ static int ohci_urb_enqueue ( } /* 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++) { @@ -242,35 +178,30 @@ static int ohci_urb_enqueue ( urb_free_priv (ohci, urb_priv); return -ENOMEM; } - } + } spin_lock_irqsave (&ohci->lock, flags); /* don't submit to a dead HC */ - if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) { + if (!HCD_HW_ACCESSIBLE(hcd)) { retval = -ENODEV; goto fail; } - if (!HC_IS_RUNNING(hcd->state)) { + if (ohci->rh_state != OHCI_RH_RUNNING) { 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; + 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); @@ -279,13 +210,47 @@ static int ohci_urb_enqueue ( frame &= ~(ed->interval - 1); frame |= ed->branch; urb->start_frame = frame; - - /* yes, only URB_ISO_ASAP is supported, and - * urb->start_frame is never used as input. + ed->last_iso = frame + ed->interval * (size - 1); + } + } else if (ed->type == PIPE_ISOCHRONOUS) { + u16 next = ohci_frame_no(ohci) + 1; + u16 frame = ed->last_iso + ed->interval; + u16 length = ed->interval * (size - 1); + + /* Behind the scheduling threshold? */ + if (unlikely(tick_before(frame, next))) { + + /* URB_ISO_ASAP: Round up to the first available slot */ + if (urb->transfer_flags & URB_ISO_ASAP) { + frame += (next - frame + ed->interval - 1) & + -ed->interval; + + /* + * Not ASAP: Use the next slot in the stream, + * no matter what. */ + } else { + /* + * Some OHCI hardware doesn't handle late TDs + * correctly. After retiring them it proceeds + * to the next ED instead of the next TD. + * Therefore we have to omit the late TDs + * entirely. + */ + urb_priv->td_cnt = DIV_ROUND_UP( + (u16) (next - frame), + ed->interval); + if (urb_priv->td_cnt >= urb_priv->length) { + ++urb_priv->td_cnt; /* Mark it */ + ohci_dbg(ohci, "iso underrun %p (%u+%u < %u)\n", + urb, frame, length, + next); + } + } } - } else if (ed->type == PIPE_ISOCHRONOUS) - urb->start_frame = ed->last_iso + ed->interval; + urb->start_frame = frame; + ed->last_iso = frame + length; + } /* fill the TDs and link them to the ed; and * enable that part of the schedule, if needed @@ -294,8 +259,6 @@ static int ohci_urb_enqueue ( urb->hcpriv = urb_priv; td_submit_urb (ohci, urb); -fail0: - spin_unlock (&urb->lock); fail: if (retval) urb_free_priv (ohci, urb_priv); @@ -304,22 +267,22 @@ fail: } /* - * 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; - -#ifdef OHCI_VERBOSE_DEBUG - urb_print (urb, "UNLINK", 1); -#endif + int rc; 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 (ohci->rh_state == OHCI_RH_RUNNING) { urb_priv_t *urb_priv; /* Unless an IRQ completed the unlink while it was being @@ -337,10 +300,10 @@ static int ohci_urb_dequeue (struct usb_hcd *hcd, struct urb *urb) * 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; } /*-------------------------------------------------------------------------*/ @@ -366,17 +329,24 @@ ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep) rescan: spin_lock_irqsave (&ohci->lock, flags); - if (!HC_IS_RUNNING (hcd->state)) { + if (ohci->rh_state != OHCI_RH_RUNNING) { 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); @@ -401,7 +371,6 @@ sanitize: } ep->hcpriv = NULL; spin_unlock_irqrestore (&ohci->lock, flags); - return; } static int ohci_get_frame (struct usb_hcd *hcd) @@ -416,6 +385,7 @@ static void ohci_usb_reset (struct ohci_hcd *ohci) ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); ohci->hc_control &= OHCI_CTRL_RWC; ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); + ohci->rh_state = OHCI_RH_HALTED; } /* ohci_shutdown forcibly disables IRQs and DMA, helping kexec and @@ -428,10 +398,101 @@ ohci_shutdown (struct usb_hcd *hcd) struct ohci_hcd *ohci; 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); + ohci_writel(ohci, (u32) ~0, &ohci->regs->intrdisable); + + /* Software reset, after which the controller goes into SUSPEND */ + ohci_writel(ohci, OHCI_HCR, &ohci->regs->cmdstatus); + ohci_readl(ohci, &ohci->regs->cmdstatus); /* flush the writes */ + udelay(10); + + ohci_writel(ohci, ohci->fminterval, &ohci->regs->fminterval); +} + +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) +{ + unsigned 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(jiffies + HZ)); +done: + spin_unlock_irqrestore(&ohci->lock, flags); } /*-------------------------------------------------------------------------* @@ -445,7 +506,10 @@ static int ohci_init (struct ohci_hcd *ohci) int ret; struct usb_hcd *hcd = ohci_to_hcd(ohci); - disable (ohci); + if (distrust_firmware) + ohci->flags |= OHCI_QUIRK_HUB_POWER; + + ohci->rh_state = OHCI_RH_HALTED; ohci->regs = hcd->regs; /* REVISIT this BIOS handshake is now moved into PCI "quirks", and @@ -512,21 +576,21 @@ static int ohci_init (struct ohci_hcd *ohci) /* Start an OHCI controller, set the BUS operational * resets USB and controller - * enable interrupts + * enable interrupts */ static int ohci_run (struct ohci_hcd *ohci) { - u32 mask, temp; + u32 mask, val; int first = ohci->fminterval == 0; struct usb_hcd *hcd = ohci_to_hcd(ohci); - disable (ohci); + ohci->rh_state = OHCI_RH_HALTED; /* boot firmware should have set this up (5.1.1.3.1) */ if (first) { - temp = ohci_readl (ohci, &ohci->regs->fminterval); - ohci->fminterval = temp & 0x3fff; + val = ohci_readl (ohci, &ohci->regs->fminterval); + ohci->fminterval = val & 0x3fff; if (ohci->fminterval != FI) ohci_dbg (ohci, "fminterval delta %d\n", ohci->fminterval - FI); @@ -534,48 +598,37 @@ static int ohci_run (struct ohci_hcd *ohci) /* also: power/overcurrent flags in roothub.a */ } - /* 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). + /* Reset USB nearly "by the book". RemoteWakeupConnected has + * to be checked in case boot firmware (BIOS/SMM/...) has set up + * wakeup in a way the bus isn't aware of (e.g., legacy PCI PM). + * If the bus glue detected wakeup capability then it should + * already be enabled; if so we'll just enable it again. */ - ohci_dbg (ohci, "resetting from state '%s', control = 0x%x\n", - hcfs2string (ohci->hc_control & OHCI_CTRL_HCFS), - ohci_readl (ohci, &ohci->regs->control)); - if ((ohci->hc_control & OHCI_CTRL_RWC) != 0 - && !device_may_wakeup(hcd->self.controller)) - device_init_wakeup(hcd->self.controller, 1); + if ((ohci->hc_control & OHCI_CTRL_RWC) != 0) + device_set_wakeup_capable(hcd->self.controller, 1); switch (ohci->hc_control & OHCI_CTRL_HCFS) { case OHCI_USB_OPER: - temp = 0; + val = 0; break; case OHCI_USB_SUSPEND: case OHCI_USB_RESUME: ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_USB_RESUME; - temp = 10 /* msec wait */; + val = 10 /* msec wait */; break; // case OHCI_USB_RESET: default: ohci->hc_control &= OHCI_CTRL_RWC; ohci->hc_control |= OHCI_USB_RESET; - temp = 50 /* msec wait */; + val = 50 /* msec wait */; break; } ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); // flush the writes (void) ohci_readl (ohci, &ohci->regs->control); - msleep(temp); - temp = roothub_a (ohci); - if (!(temp & RH_A_NPS)) { - /* power down each port */ - for (temp = 0; temp < ohci->num_ports; temp++) - ohci_writel (ohci, RH_PS_LSDA, - &ohci->regs->roothub.portstatus [temp]); - } - // flush those writes - (void) ohci_readl (ohci, &ohci->regs->control); + msleep(val); + memset (ohci->hcca, 0, sizeof (struct ohci_hcca)); /* 2msec timelimit here means no irqs/preempt */ @@ -584,9 +637,9 @@ static int ohci_run (struct ohci_hcd *ohci) retry: /* HC Reset requires max 10 us delay */ ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus); - temp = 30; /* ... allow extra time */ + val = 30; /* ... allow extra time */ while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) { - if (--temp == 0) { + if (--val == 0) { spin_unlock_irq (&ohci->lock); ohci_err (ohci, "USB HC reset timed out!\n"); return -1; @@ -637,14 +690,14 @@ retry: } /* use rhsc irqs after khubd is fully initialized */ - hcd->poll_rh = 1; + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); 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); - hcd->state = HC_STATE_RUNNING; + ohci->rh_state = OHCI_RH_RUNNING; /* wake on ConnectStatusChange, matching external hubs */ ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status); @@ -655,22 +708,23 @@ retry: ohci_writel (ohci, mask, &ohci->regs->intrenable); /* handle root hub init quirks ... */ - temp = roothub_a (ohci); - temp &= ~(RH_A_PSM | RH_A_OCPM); + val = roothub_a (ohci); + val &= ~(RH_A_PSM | RH_A_OCPM); if (ohci->flags & OHCI_QUIRK_SUPERIO) { /* NSC 87560 and maybe others */ - temp |= RH_A_NOCP; - temp &= ~(RH_A_POTPGT | RH_A_NPS); - ohci_writel (ohci, temp, &ohci->regs->roothub.a); - } else if ((ohci->flags & OHCI_QUIRK_AMD756) || distrust_firmware) { + val |= RH_A_NOCP; + val &= ~(RH_A_POTPGT | RH_A_NPS); + ohci_writel (ohci, val, &ohci->regs->roothub.a); + } else if ((ohci->flags & OHCI_QUIRK_AMD756) || + (ohci->flags & OHCI_QUIRK_HUB_POWER)) { /* hub power always on; required for AMD-756 and some * Mac platforms. ganged overcurrent reporting, if any. */ - temp |= RH_A_NPS; - ohci_writel (ohci, temp, &ohci->regs->roothub.a); + val |= RH_A_NPS; + ohci_writel (ohci, val, &ohci->regs->roothub.a); } ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status); - ohci_writel (ohci, (temp & RH_A_NPS) ? 0 : RH_B_PPCM, + ohci_writel (ohci, (val & RH_A_NPS) ? 0 : RH_B_PPCM, &ohci->regs->roothub.b); // flush those writes (void) ohci_readl (ohci, &ohci->regs->control); @@ -679,62 +733,128 @@ retry: spin_unlock_irq (&ohci->lock); // POTPGT delay is bits 24-31, in 2 ms units. - mdelay ((temp >> 23) & 0x1fe); - hcd->state = HC_STATE_RUNNING; + mdelay ((val >> 23) & 0x1fe); + + 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); + + ohci->eds_scheduled = 0; + ohci->ed_to_check = NULL; + } ohci_dump (ohci, 1); return 0; } +/* ohci_setup routine for generic controller initialization */ + +int ohci_setup(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + + ohci_hcd_init(ohci); + + return ohci_init(ohci); +} +EXPORT_SYMBOL_GPL(ohci_setup); + +/* ohci_start routine for generic controller start of all OHCI bus glue */ +static int ohci_start(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int ret; + + ret = ohci_run(ohci); + if (ret < 0) { + ohci_err(ohci, "can't start\n"); + ohci_stop(hcd); + } + return ret; +} + /*-------------------------------------------------------------------------*/ /* 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; - - /* we can eliminate a (slow) ohci_readl() - if _only_ WDH caused this irq */ - if ((ohci->hcca->done_head != 0) - && ! (hc32_to_cpup (ohci, &ohci->hcca->done_head) - & 0x01)) { - ints = OHCI_INTR_WDH; - - /* cardbus/... hardware gone before remove() */ - } else if ((ints = ohci_readl (ohci, ®s->intrstatus)) == ~(u32)0) { - disable (ohci); + int ints; + + /* Read interrupt status (and flush pending writes). We ignore the + * optimization of checking the LSB of hcca->done_head; it doesn't + * work on all systems (edge triggering for OHCI can be a factor). + */ + ints = ohci_readl(ohci, ®s->intrstatus); + + /* Check for an all 1's result which is a typical consequence + * of dead, unclocked, or unplugged (CardBus...) devices + */ + if (ints == ~(u32)0) { + ohci->rh_state = OHCI_RH_HALTED; ohci_dbg (ohci, "device removed!\n"); + usb_hc_died(hcd); return IRQ_HANDLED; + } + + /* We only care about interrupts that are enabled */ + ints &= ohci_readl(ohci, ®s->intrenable); /* interrupt for some other device? */ - } else if ((ints &= ohci_readl (ohci, ®s->intrenable)) == 0) { + if (ints == 0 || unlikely(ohci->rh_state == OHCI_RH_HALTED)) return IRQ_NOTMINE; - } - - if (ints & OHCI_INTR_RHSC) { - ohci_vdbg (ohci, "rhsc\n"); - ohci->next_statechange = jiffies + STATECHANGE_DELAY; - ohci_writel (ohci, OHCI_INTR_RHSC, ®s->intrstatus); - usb_hcd_poll_rh_status(hcd); - } 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 { + ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n"); + ohci->rh_state = OHCI_RH_HALTED; + usb_hc_died(hcd); + } ohci_dump (ohci, 1); ohci_usb_reset (ohci); } - if (ints & OHCI_INTR_RD) { - ohci_vdbg (ohci, "resume detect\n"); - ohci_writel (ohci, OHCI_INTR_RD, ®s->intrstatus); - hcd->poll_rh = 1; + if (ints & OHCI_INTR_RHSC) { + ohci_dbg(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_dbg(ohci, "resume detect\n"); + ohci_writel(ohci, OHCI_INTR_RD, ®s->intrstatus); + set_bit(HCD_FLAG_POLL_RH, &hcd->flags); if (ohci->autostop) { spin_lock (&ohci->lock); ohci_rh_resume (ohci); @@ -744,15 +864,36 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs) } if (ints & OHCI_INTR_WDH) { - if (HC_IS_RUNNING(hcd->state)) - 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); } - + + 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 @@ -760,15 +901,17 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs) */ 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 - && HC_IS_RUNNING(hcd->state)) - ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable); + finish_unlinks (ohci, ohci_frame_no(ohci)); + if ((ints & OHCI_INTR_SF) != 0 + && !ohci->ed_rm_list + && !ohci->ed_to_check + && ohci->rh_state == OHCI_RH_RUNNING) + ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable); spin_unlock (&ohci->lock); - if (HC_IS_RUNNING(hcd->state)) { + if (ohci->rh_state == OHCI_RH_RUNNING) { 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); } @@ -779,26 +922,29 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs) /*-------------------------------------------------------------------------*/ 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(); + if (quirk_nec(ohci)) + flush_work(&ohci->nec_work); - ohci_usb_reset (ohci); ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + ohci_usb_reset(ohci); free_irq(hcd->irq, hcd); - hcd->irq = -1; + hcd->irq = 0; + + if (quirk_zfmicro(ohci)) + del_timer(&ohci->unlink_watchdog); + if (quirk_amdiso(ohci)) + usb_amd_dev_put(); remove_debug_files (ohci); 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; @@ -807,24 +953,20 @@ static void ohci_stop (struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -/* must not be called from interrupt context */ - -#ifdef CONFIG_PM +#if defined(CONFIG_PM) || defined(CONFIG_PCI) -static int ohci_restart (struct ohci_hcd *ohci) +/* must not be called from interrupt context */ +int ohci_restart(struct ohci_hcd *ohci) { int temp; int i; struct urb_priv *priv; - /* 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). - */ + ohci_init(ohci); spin_lock_irq(&ohci->lock); - disable (ohci); - usb_root_hub_lost_power(ohci_to_hcd(ohci)->self.root_hub); + ohci->rh_state = OHCI_RH_HALTED; + + /* 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) { @@ -848,11 +990,10 @@ static int ohci_restart (struct ohci_hcd *ohci) 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: */ @@ -860,96 +1001,348 @@ static int ohci_restart (struct ohci_hcd *ohci) /* 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; + } + ohci_dbg(ohci, "restart complete\n"); + return 0; +} +EXPORT_SYMBOL_GPL(ohci_restart); + +#endif + +#ifdef CONFIG_PM + +int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup) +{ + struct ohci_hcd *ohci = hcd_to_ohci (hcd); + unsigned long flags; + int rc = 0; + + /* Disable irq emission and mark HW unaccessible. Use + * the spinlock to properly synchronize with possible pending + * RH suspend or resume activity. + */ + spin_lock_irqsave (&ohci->lock, flags); + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable); + (void)ohci_readl(ohci, &ohci->regs->intrdisable); + + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + spin_unlock_irqrestore (&ohci->lock, flags); + + synchronize_irq(hcd->irq); + + if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) { + ohci_resume(hcd, false); + rc = -EBUSY; + } + return rc; +} +EXPORT_SYMBOL_GPL(ohci_suspend); + + +int ohci_resume(struct usb_hcd *hcd, bool hibernated) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + int port; + bool need_reinit = false; + + set_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + + /* Make sure resume from hibernation re-enumerates everything */ + if (hibernated) + ohci_usb_reset(ohci); + + /* See if the controller is already running or has been reset */ + ohci->hc_control = ohci_readl(ohci, &ohci->regs->control); + if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { + need_reinit = true; } 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 = ohci->num_ports; - while (i--) - ohci_writel (ohci, RH_PS_PSS, - &ohci->regs->roothub.portstatus [i]); - ohci_dbg (ohci, "restart complete\n"); + switch (ohci->hc_control & OHCI_CTRL_HCFS) { + case OHCI_USB_OPER: + case OHCI_USB_RESET: + need_reinit = true; + } } + + /* If needed, reinitialize and suspend the root hub */ + if (need_reinit) { + spin_lock_irq(&ohci->lock); + ohci_rh_resume(ohci); + ohci_rh_suspend(ohci, 0); + spin_unlock_irq(&ohci->lock); + } + + /* Normally just turn on port power and enable interrupts */ + else { + ohci_dbg(ohci, "powerup ports\n"); + for (port = 0; port < ohci->num_ports; port++) + ohci_writel(ohci, RH_PS_PPS, + &ohci->regs->roothub.portstatus[port]); + + ohci_writel(ohci, OHCI_INTR_MIE, &ohci->regs->intrenable); + ohci_readl(ohci, &ohci->regs->intrenable); + msleep(20); + } + + usb_hcd_resume_root_hub(hcd); + return 0; } +EXPORT_SYMBOL_GPL(ohci_resume); + #endif /*-------------------------------------------------------------------------*/ -#define DRIVER_INFO DRIVER_VERSION " " DRIVER_DESC +/* + * Generic structure: This gets copied for platform drivers so that + * individual entries can be overridden as needed. + */ + +static const struct hc_driver ohci_hc_driver = { + .description = hcd_name, + .product_desc = "OHCI Host Controller", + .hcd_priv_size = sizeof(struct ohci_hcd), + + /* + * generic hardware linkage + */ + .irq = ohci_irq, + .flags = HCD_MEMORY | HCD_USB11, + + /* + * basic lifecycle operations + */ + .reset = ohci_setup, + .start = ohci_start, + .stop = ohci_stop, + .shutdown = ohci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ohci_urb_enqueue, + .urb_dequeue = ohci_urb_dequeue, + .endpoint_disable = ohci_endpoint_disable, + + /* + * scheduling support + */ + .get_frame_number = ohci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ohci_hub_status_data, + .hub_control = ohci_hub_control, +#ifdef CONFIG_PM + .bus_suspend = ohci_bus_suspend, + .bus_resume = ohci_bus_resume, +#endif + .start_port_reset = ohci_start_port_reset, +}; + +void ohci_init_driver(struct hc_driver *drv, + const struct ohci_driver_overrides *over) +{ + /* Copy the generic table to drv and then apply the overrides */ + *drv = ohci_hc_driver; + + if (over) { + drv->product_desc = over->product_desc; + drv->hcd_priv_size += over->extra_priv_size; + if (over->reset) + drv->reset = over->reset; + } +} +EXPORT_SYMBOL_GPL(ohci_init_driver); + +/*-------------------------------------------------------------------------*/ MODULE_AUTHOR (DRIVER_AUTHOR); -MODULE_DESCRIPTION (DRIVER_INFO); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE ("GPL"); -#ifdef CONFIG_PCI -#include "ohci-pci.c" +#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111) +#include "ohci-sa1111.c" +#define SA1111_DRIVER ohci_hcd_sa1111_driver #endif -#ifdef CONFIG_SA1111 -#include "ohci-sa1111.c" +#ifdef CONFIG_USB_OHCI_HCD_DAVINCI +#include "ohci-da8xx.c" +#define DAVINCI_PLATFORM_DRIVER ohci_hcd_da8xx_driver #endif -#ifdef CONFIG_ARCH_S3C2410 -#include "ohci-s3c2410.c" +#ifdef CONFIG_USB_OHCI_HCD_PPC_OF +#include "ohci-ppc-of.c" +#define OF_PLATFORM_DRIVER ohci_hcd_ppc_of_driver #endif -#ifdef CONFIG_ARCH_OMAP -#include "ohci-omap.c" +#ifdef CONFIG_PPC_PS3 +#include "ohci-ps3.c" +#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver +#endif + +#ifdef CONFIG_MFD_SM501 +#include "ohci-sm501.c" +#define SM501_OHCI_DRIVER ohci_hcd_sm501_driver +#endif + +#ifdef CONFIG_MFD_TC6393XB +#include "ohci-tmio.c" +#define TMIO_OHCI_DRIVER ohci_hcd_tmio_driver +#endif + +#ifdef CONFIG_MACH_JZ4740 +#include "ohci-jz4740.c" +#define PLATFORM_DRIVER ohci_hcd_jz4740_driver #endif -#ifdef CONFIG_ARCH_LH7A404 -#include "ohci-lh7a404.c" +#ifdef CONFIG_USB_OCTEON_OHCI +#include "ohci-octeon.c" +#define PLATFORM_DRIVER ohci_octeon_driver #endif -#ifdef CONFIG_PXA27x -#include "ohci-pxa27x.c" +#ifdef CONFIG_TILE_USB +#include "ohci-tilegx.c" +#define PLATFORM_DRIVER ohci_hcd_tilegx_driver +#endif + +static int __init ohci_hcd_mod_init(void) +{ + int retval = 0; + + if (usb_disabled()) + return -ENODEV; + + printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name); + pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name, + sizeof (struct ed), sizeof (struct td)); + set_bit(USB_OHCI_LOADED, &usb_hcds_loaded); + + ohci_debug_root = debugfs_create_dir("ohci", usb_debug_root); + if (!ohci_debug_root) { + retval = -ENOENT; + goto error_debug; + } + +#ifdef PS3_SYSTEM_BUS_DRIVER + retval = ps3_ohci_driver_register(&PS3_SYSTEM_BUS_DRIVER); + if (retval < 0) + goto error_ps3; #endif -#ifdef CONFIG_ARCH_EP93XX -#include "ohci-ep93xx.c" +#ifdef PLATFORM_DRIVER + retval = platform_driver_register(&PLATFORM_DRIVER); + if (retval < 0) + goto error_platform; #endif -#ifdef CONFIG_SOC_AU1X00 -#include "ohci-au1xxx.c" +#ifdef OF_PLATFORM_DRIVER + retval = platform_driver_register(&OF_PLATFORM_DRIVER); + if (retval < 0) + goto error_of_platform; #endif -#ifdef CONFIG_USB_OHCI_HCD_PPC_SOC -#include "ohci-ppc-soc.c" +#ifdef SA1111_DRIVER + retval = sa1111_driver_register(&SA1111_DRIVER); + if (retval < 0) + goto error_sa1111; #endif -#if defined(CONFIG_ARCH_AT91RM9200) || defined(CONFIG_ARCH_AT91SAM9261) -#include "ohci-at91.c" +#ifdef SM501_OHCI_DRIVER + retval = platform_driver_register(&SM501_OHCI_DRIVER); + if (retval < 0) + goto error_sm501; #endif -#ifdef CONFIG_ARCH_PNX4008 -#include "ohci-pnx4008.c" +#ifdef TMIO_OHCI_DRIVER + retval = platform_driver_register(&TMIO_OHCI_DRIVER); + if (retval < 0) + goto error_tmio; #endif -#if !(defined(CONFIG_PCI) \ - || defined(CONFIG_SA1111) \ - || defined(CONFIG_ARCH_S3C2410) \ - || defined(CONFIG_ARCH_OMAP) \ - || defined (CONFIG_ARCH_LH7A404) \ - || defined (CONFIG_PXA27x) \ - || defined (CONFIG_ARCH_EP93XX) \ - || defined (CONFIG_SOC_AU1X00) \ - || defined (CONFIG_USB_OHCI_HCD_PPC_SOC) \ - || defined (CONFIG_ARCH_AT91RM9200) \ - || defined (CONFIG_ARCH_AT91SAM9261) \ - || defined (CONFIG_ARCH_PNX4008) \ - ) -#error "missing bus glue for ohci-hcd" +#ifdef DAVINCI_PLATFORM_DRIVER + retval = platform_driver_register(&DAVINCI_PLATFORM_DRIVER); + if (retval < 0) + goto error_davinci; #endif + + return retval; + + /* Error path */ +#ifdef DAVINCI_PLATFORM_DRIVER + platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER); + error_davinci: +#endif +#ifdef TMIO_OHCI_DRIVER + platform_driver_unregister(&TMIO_OHCI_DRIVER); + error_tmio: +#endif +#ifdef SM501_OHCI_DRIVER + platform_driver_unregister(&SM501_OHCI_DRIVER); + error_sm501: +#endif +#ifdef SA1111_DRIVER + sa1111_driver_unregister(&SA1111_DRIVER); + error_sa1111: +#endif +#ifdef OF_PLATFORM_DRIVER + platform_driver_unregister(&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 + debugfs_remove(ohci_debug_root); + ohci_debug_root = NULL; + error_debug: + + clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); + return retval; +} +module_init(ohci_hcd_mod_init); + +static void __exit ohci_hcd_mod_exit(void) +{ +#ifdef DAVINCI_PLATFORM_DRIVER + platform_driver_unregister(&DAVINCI_PLATFORM_DRIVER); +#endif +#ifdef TMIO_OHCI_DRIVER + platform_driver_unregister(&TMIO_OHCI_DRIVER); +#endif +#ifdef SM501_OHCI_DRIVER + platform_driver_unregister(&SM501_OHCI_DRIVER); +#endif +#ifdef SA1111_DRIVER + sa1111_driver_unregister(&SA1111_DRIVER); +#endif +#ifdef OF_PLATFORM_DRIVER + platform_driver_unregister(&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 + debugfs_remove(ohci_debug_root); + clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded); +} +module_exit(ohci_hcd_mod_exit); + |