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-rw-r--r--drivers/usb/host/Makefile5
-rw-r--r--drivers/usb/host/ehci-hcd.c543
-rw-r--r--drivers/usb/host/ehci-hub.c8
-rw-r--r--drivers/usb/host/ehci-pci.c415
-rw-r--r--drivers/usb/host/ehci.h1
-rw-r--r--drivers/usb/host/isp116x-hcd.c41
-rw-r--r--drivers/usb/host/isp116x.h1
-rw-r--r--drivers/usb/host/ohci-au1xxx.c6
-rw-r--r--drivers/usb/host/ohci-dbg.c4
-rw-r--r--drivers/usb/host/ohci-hcd.c4
-rw-r--r--drivers/usb/host/ohci-hub.c52
-rw-r--r--drivers/usb/host/ohci-lh7a404.c6
-rw-r--r--drivers/usb/host/ohci-mem.c1
-rw-r--r--drivers/usb/host/ohci-omap.c45
-rw-r--r--drivers/usb/host/ohci-pci.c47
-rw-r--r--drivers/usb/host/ohci-ppc-soc.c9
-rw-r--r--drivers/usb/host/ohci-pxa27x.c7
-rw-r--r--drivers/usb/host/ohci-s3c2410.c9
-rw-r--r--drivers/usb/host/ohci-sa1111.c7
-rw-r--r--drivers/usb/host/ohci.h1
-rw-r--r--drivers/usb/host/pci-quirks.c296
-rw-r--r--drivers/usb/host/sl811-hcd.c17
-rw-r--r--drivers/usb/host/uhci-debug.c5
-rw-r--r--drivers/usb/host/uhci-hcd.c178
-rw-r--r--drivers/usb/host/uhci-hcd.h98
-rw-r--r--drivers/usb/host/uhci-q.c62
26 files changed, 1038 insertions, 830 deletions
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index 350d14fc1cc9..58321d3f314c 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -1,8 +1,9 @@
1# 1#
2# Makefile for USB Host Controller Driver 2# Makefile for USB Host Controller Drivers
3# framework and drivers
4# 3#
5 4
5obj-$(CONFIG_PCI) += pci-quirks.o
6
6obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o 7obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o
7obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o 8obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
8obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o 9obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index f5eb9e7b5b18..af3c05eb86fc 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -182,6 +182,9 @@ static int ehci_halt (struct ehci_hcd *ehci)
182{ 182{
183 u32 temp = readl (&ehci->regs->status); 183 u32 temp = readl (&ehci->regs->status);
184 184
185 /* disable any irqs left enabled by previous code */
186 writel (0, &ehci->regs->intr_enable);
187
185 if ((temp & STS_HALT) != 0) 188 if ((temp & STS_HALT) != 0)
186 return 0; 189 return 0;
187 190
@@ -297,50 +300,17 @@ static void ehci_watchdog (unsigned long param)
297 spin_unlock_irqrestore (&ehci->lock, flags); 300 spin_unlock_irqrestore (&ehci->lock, flags);
298} 301}
299 302
300#ifdef CONFIG_PCI 303/* Reboot notifiers kick in for silicon on any bus (not just pci, etc).
301 304 * This forcibly disables dma and IRQs, helping kexec and other cases
302/* EHCI 0.96 (and later) section 5.1 says how to kick BIOS/SMM/... 305 * where the next system software may expect clean state.
303 * off the controller (maybe it can boot from highspeed USB disks).
304 */ 306 */
305static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap)
306{
307 struct pci_dev *pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
308
309 /* always say Linux will own the hardware */
310 pci_write_config_byte(pdev, where + 3, 1);
311
312 /* maybe wait a while for BIOS to respond */
313 if (cap & (1 << 16)) {
314 int msec = 5000;
315
316 do {
317 msleep(10);
318 msec -= 10;
319 pci_read_config_dword(pdev, where, &cap);
320 } while ((cap & (1 << 16)) && msec);
321 if (cap & (1 << 16)) {
322 ehci_err(ehci, "BIOS handoff failed (%d, %08x)\n",
323 where, cap);
324 // some BIOS versions seem buggy...
325 // return 1;
326 ehci_warn (ehci, "continuing after BIOS bug...\n");
327 /* disable all SMIs, and clear "BIOS owns" flag */
328 pci_write_config_dword(pdev, where + 4, 0);
329 pci_write_config_byte(pdev, where + 2, 0);
330 } else
331 ehci_dbg(ehci, "BIOS handoff succeeded\n");
332 }
333 return 0;
334}
335
336#endif
337
338static int 307static int
339ehci_reboot (struct notifier_block *self, unsigned long code, void *null) 308ehci_reboot (struct notifier_block *self, unsigned long code, void *null)
340{ 309{
341 struct ehci_hcd *ehci; 310 struct ehci_hcd *ehci;
342 311
343 ehci = container_of (self, struct ehci_hcd, reboot_notifier); 312 ehci = container_of (self, struct ehci_hcd, reboot_notifier);
313 (void) ehci_halt (ehci);
344 314
345 /* make BIOS/etc use companion controller during reboot */ 315 /* make BIOS/etc use companion controller during reboot */
346 writel (0, &ehci->regs->configured_flag); 316 writel (0, &ehci->regs->configured_flag);
@@ -363,156 +333,90 @@ static void ehci_port_power (struct ehci_hcd *ehci, int is_on)
363 msleep(20); 333 msleep(20);
364} 334}
365 335
336/*-------------------------------------------------------------------------*/
337
338/*
339 * ehci_work is called from some interrupts, timers, and so on.
340 * it calls driver completion functions, after dropping ehci->lock.
341 */
342static void ehci_work (struct ehci_hcd *ehci, struct pt_regs *regs)
343{
344 timer_action_done (ehci, TIMER_IO_WATCHDOG);
345 if (ehci->reclaim_ready)
346 end_unlink_async (ehci, regs);
347
348 /* another CPU may drop ehci->lock during a schedule scan while
349 * it reports urb completions. this flag guards against bogus
350 * attempts at re-entrant schedule scanning.
351 */
352 if (ehci->scanning)
353 return;
354 ehci->scanning = 1;
355 scan_async (ehci, regs);
356 if (ehci->next_uframe != -1)
357 scan_periodic (ehci, regs);
358 ehci->scanning = 0;
366 359
367/* called by khubd or root hub init threads */ 360 /* the IO watchdog guards against hardware or driver bugs that
361 * misplace IRQs, and should let us run completely without IRQs.
362 * such lossage has been observed on both VT6202 and VT8235.
363 */
364 if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state) &&
365 (ehci->async->qh_next.ptr != NULL ||
366 ehci->periodic_sched != 0))
367 timer_action (ehci, TIMER_IO_WATCHDOG);
368}
368 369
369static int ehci_hc_reset (struct usb_hcd *hcd) 370static void ehci_stop (struct usb_hcd *hcd)
370{ 371{
371 struct ehci_hcd *ehci = hcd_to_ehci (hcd); 372 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
372 u32 temp;
373 unsigned count = 256/4;
374 373
375 spin_lock_init (&ehci->lock); 374 ehci_dbg (ehci, "stop\n");
376 375
377 ehci->caps = hcd->regs; 376 /* Turn off port power on all root hub ports. */
378 ehci->regs = hcd->regs + HC_LENGTH (readl (&ehci->caps->hc_capbase)); 377 ehci_port_power (ehci, 0);
379 dbg_hcs_params (ehci, "reset");
380 dbg_hcc_params (ehci, "reset");
381 378
382 /* cache this readonly data; minimize chip reads */ 379 /* no more interrupts ... */
383 ehci->hcs_params = readl (&ehci->caps->hcs_params); 380 del_timer_sync (&ehci->watchdog);
384 381
385#ifdef CONFIG_PCI 382 spin_lock_irq(&ehci->lock);
386 if (hcd->self.controller->bus == &pci_bus_type) { 383 if (HC_IS_RUNNING (hcd->state))
387 struct pci_dev *pdev = to_pci_dev(hcd->self.controller); 384 ehci_quiesce (ehci);
388 385
389 switch (pdev->vendor) { 386 ehci_reset (ehci);
390 case PCI_VENDOR_ID_TDI: 387 writel (0, &ehci->regs->intr_enable);
391 if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) { 388 spin_unlock_irq(&ehci->lock);
392 ehci->is_tdi_rh_tt = 1;
393 tdi_reset (ehci);
394 }
395 break;
396 case PCI_VENDOR_ID_AMD:
397 /* AMD8111 EHCI doesn't work, according to AMD errata */
398 if (pdev->device == 0x7463) {
399 ehci_info (ehci, "ignoring AMD8111 (errata)\n");
400 return -EIO;
401 }
402 break;
403 case PCI_VENDOR_ID_NVIDIA:
404 /* NVidia reports that certain chips don't handle
405 * QH, ITD, or SITD addresses above 2GB. (But TD,
406 * data buffer, and periodic schedule are normal.)
407 */
408 switch (pdev->device) {
409 case 0x003c: /* MCP04 */
410 case 0x005b: /* CK804 */
411 case 0x00d8: /* CK8 */
412 case 0x00e8: /* CK8S */
413 if (pci_set_consistent_dma_mask(pdev,
414 DMA_31BIT_MASK) < 0)
415 ehci_warn (ehci, "can't enable NVidia "
416 "workaround for >2GB RAM\n");
417 break;
418 }
419 break;
420 }
421 389
422 /* optional debug port, normally in the first BAR */ 390 /* let companion controllers work when we aren't */
423 temp = pci_find_capability (pdev, 0x0a); 391 writel (0, &ehci->regs->configured_flag);
424 if (temp) { 392 unregister_reboot_notifier (&ehci->reboot_notifier);
425 pci_read_config_dword(pdev, temp, &temp);
426 temp >>= 16;
427 if ((temp & (3 << 13)) == (1 << 13)) {
428 temp &= 0x1fff;
429 ehci->debug = hcd->regs + temp;
430 temp = readl (&ehci->debug->control);
431 ehci_info (ehci, "debug port %d%s\n",
432 HCS_DEBUG_PORT(ehci->hcs_params),
433 (temp & DBGP_ENABLED)
434 ? " IN USE"
435 : "");
436 if (!(temp & DBGP_ENABLED))
437 ehci->debug = NULL;
438 }
439 }
440 393
441 temp = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params)); 394 remove_debug_files (ehci);
442 } else
443 temp = 0;
444
445 /* EHCI 0.96 and later may have "extended capabilities" */
446 while (temp && count--) {
447 u32 cap;
448
449 pci_read_config_dword (to_pci_dev(hcd->self.controller),
450 temp, &cap);
451 ehci_dbg (ehci, "capability %04x at %02x\n", cap, temp);
452 switch (cap & 0xff) {
453 case 1: /* BIOS/SMM/... handoff */
454 if (bios_handoff (ehci, temp, cap) != 0)
455 return -EOPNOTSUPP;
456 break;
457 case 0: /* illegal reserved capability */
458 ehci_warn (ehci, "illegal capability!\n");
459 cap = 0;
460 /* FALLTHROUGH */
461 default: /* unknown */
462 break;
463 }
464 temp = (cap >> 8) & 0xff;
465 }
466 if (!count) {
467 ehci_err (ehci, "bogus capabilities ... PCI problems!\n");
468 return -EIO;
469 }
470 if (ehci_is_TDI(ehci))
471 ehci_reset (ehci);
472#endif
473 395
474 ehci_port_power (ehci, 0); 396 /* root hub is shut down separately (first, when possible) */
397 spin_lock_irq (&ehci->lock);
398 if (ehci->async)
399 ehci_work (ehci, NULL);
400 spin_unlock_irq (&ehci->lock);
401 ehci_mem_cleanup (ehci);
475 402
476 /* at least the Genesys GL880S needs fixup here */ 403#ifdef EHCI_STATS
477 temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params); 404 ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
478 temp &= 0x0f; 405 ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
479 if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) { 406 ehci->stats.lost_iaa);
480 ehci_dbg (ehci, "bogus port configuration: " 407 ehci_dbg (ehci, "complete %ld unlink %ld\n",
481 "cc=%d x pcc=%d < ports=%d\n", 408 ehci->stats.complete, ehci->stats.unlink);
482 HCS_N_CC(ehci->hcs_params),
483 HCS_N_PCC(ehci->hcs_params),
484 HCS_N_PORTS(ehci->hcs_params));
485
486#ifdef CONFIG_PCI
487 if (hcd->self.controller->bus == &pci_bus_type) {
488 struct pci_dev *pdev;
489
490 pdev = to_pci_dev(hcd->self.controller);
491 switch (pdev->vendor) {
492 case 0x17a0: /* GENESYS */
493 /* GL880S: should be PORTS=2 */
494 temp |= (ehci->hcs_params & ~0xf);
495 ehci->hcs_params = temp;
496 break;
497 case PCI_VENDOR_ID_NVIDIA:
498 /* NF4: should be PCC=10 */
499 break;
500 }
501 }
502#endif 409#endif
503 }
504 410
505 /* force HC to halt state */ 411 dbg_status (ehci, "ehci_stop completed", readl (&ehci->regs->status));
506 return ehci_halt (ehci);
507} 412}
508 413
509static int ehci_start (struct usb_hcd *hcd) 414static int ehci_run (struct usb_hcd *hcd)
510{ 415{
511 struct ehci_hcd *ehci = hcd_to_ehci (hcd); 416 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
512 u32 temp; 417 u32 temp;
513 int retval; 418 int retval;
514 u32 hcc_params; 419 u32 hcc_params;
515 u8 sbrn = 0;
516 int first; 420 int first;
517 421
518 /* skip some things on restart paths */ 422 /* skip some things on restart paths */
@@ -551,27 +455,6 @@ static int ehci_start (struct usb_hcd *hcd)
551 } 455 }
552 writel (ehci->periodic_dma, &ehci->regs->frame_list); 456 writel (ehci->periodic_dma, &ehci->regs->frame_list);
553 457
554#ifdef CONFIG_PCI
555 if (hcd->self.controller->bus == &pci_bus_type) {
556 struct pci_dev *pdev;
557 u16 port_wake;
558
559 pdev = to_pci_dev(hcd->self.controller);
560
561 /* Serial Bus Release Number is at PCI 0x60 offset */
562 pci_read_config_byte(pdev, 0x60, &sbrn);
563
564 /* port wake capability, reported by boot firmware */
565 pci_read_config_word(pdev, 0x62, &port_wake);
566 hcd->can_wakeup = (port_wake & 1) != 0;
567
568 /* help hc dma work well with cachelines */
569 retval = pci_set_mwi(pdev);
570 if (retval)
571 ehci_dbg(ehci, "unable to enable MWI - not fatal.\n");
572 }
573#endif
574
575 /* 458 /*
576 * dedicate a qh for the async ring head, since we couldn't unlink 459 * dedicate a qh for the async ring head, since we couldn't unlink
577 * a 'real' qh without stopping the async schedule [4.8]. use it 460 * a 'real' qh without stopping the async schedule [4.8]. use it
@@ -667,7 +550,7 @@ static int ehci_start (struct usb_hcd *hcd)
667 temp = HC_VERSION(readl (&ehci->caps->hc_capbase)); 550 temp = HC_VERSION(readl (&ehci->caps->hc_capbase));
668 ehci_info (ehci, 551 ehci_info (ehci,
669 "USB %x.%x %s, EHCI %x.%02x, driver %s\n", 552 "USB %x.%x %s, EHCI %x.%02x, driver %s\n",
670 ((sbrn & 0xf0)>>4), (sbrn & 0x0f), 553 ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f),
671 first ? "initialized" : "restarted", 554 first ? "initialized" : "restarted",
672 temp >> 8, temp & 0xff, DRIVER_VERSION); 555 temp >> 8, temp & 0xff, DRIVER_VERSION);
673 556
@@ -679,188 +562,6 @@ static int ehci_start (struct usb_hcd *hcd)
679 return 0; 562 return 0;
680} 563}
681 564
682/* always called by thread; normally rmmod */
683
684static void ehci_stop (struct usb_hcd *hcd)
685{
686 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
687
688 ehci_dbg (ehci, "stop\n");
689
690 /* Turn off port power on all root hub ports. */
691 ehci_port_power (ehci, 0);
692
693 /* no more interrupts ... */
694 del_timer_sync (&ehci->watchdog);
695
696 spin_lock_irq(&ehci->lock);
697 if (HC_IS_RUNNING (hcd->state))
698 ehci_quiesce (ehci);
699
700 ehci_reset (ehci);
701 writel (0, &ehci->regs->intr_enable);
702 spin_unlock_irq(&ehci->lock);
703
704 /* let companion controllers work when we aren't */
705 writel (0, &ehci->regs->configured_flag);
706 unregister_reboot_notifier (&ehci->reboot_notifier);
707
708 remove_debug_files (ehci);
709
710 /* root hub is shut down separately (first, when possible) */
711 spin_lock_irq (&ehci->lock);
712 if (ehci->async)
713 ehci_work (ehci, NULL);
714 spin_unlock_irq (&ehci->lock);
715 ehci_mem_cleanup (ehci);
716
717#ifdef EHCI_STATS
718 ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n",
719 ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim,
720 ehci->stats.lost_iaa);
721 ehci_dbg (ehci, "complete %ld unlink %ld\n",
722 ehci->stats.complete, ehci->stats.unlink);
723#endif
724
725 dbg_status (ehci, "ehci_stop completed", readl (&ehci->regs->status));
726}
727
728static int ehci_get_frame (struct usb_hcd *hcd)
729{
730 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
731 return (readl (&ehci->regs->frame_index) >> 3) % ehci->periodic_size;
732}
733
734/*-------------------------------------------------------------------------*/
735
736#ifdef CONFIG_PM
737
738/* suspend/resume, section 4.3 */
739
740/* These routines rely on the bus (pci, platform, etc)
741 * to handle powerdown and wakeup, and currently also on
742 * transceivers that don't need any software attention to set up
743 * the right sort of wakeup.
744 */
745
746static int ehci_suspend (struct usb_hcd *hcd, pm_message_t message)
747{
748 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
749
750 if (time_before (jiffies, ehci->next_statechange))
751 msleep (100);
752
753#ifdef CONFIG_USB_SUSPEND
754 (void) usb_suspend_device (hcd->self.root_hub, message);
755#else
756 usb_lock_device (hcd->self.root_hub);
757 (void) ehci_hub_suspend (hcd);
758 usb_unlock_device (hcd->self.root_hub);
759#endif
760
761 // save (PCI) FLADJ in case of Vaux power loss
762 // ... we'd only use it to handle clock skew
763
764 return 0;
765}
766
767static int ehci_resume (struct usb_hcd *hcd)
768{
769 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
770 unsigned port;
771 struct usb_device *root = hcd->self.root_hub;
772 int retval = -EINVAL;
773
774 // maybe restore (PCI) FLADJ
775
776 if (time_before (jiffies, ehci->next_statechange))
777 msleep (100);
778
779 /* If any port is suspended (or owned by the companion),
780 * we know we can/must resume the HC (and mustn't reset it).
781 */
782 for (port = HCS_N_PORTS (ehci->hcs_params); port > 0; ) {
783 u32 status;
784 port--;
785 status = readl (&ehci->regs->port_status [port]);
786 if (!(status & PORT_POWER))
787 continue;
788 if (status & (PORT_SUSPEND | PORT_OWNER)) {
789 down (&hcd->self.root_hub->serialize);
790 retval = ehci_hub_resume (hcd);
791 up (&hcd->self.root_hub->serialize);
792 break;
793 }
794 if (!root->children [port])
795 continue;
796 dbg_port (ehci, __FUNCTION__, port + 1, status);
797 usb_set_device_state (root->children[port],
798 USB_STATE_NOTATTACHED);
799 }
800
801 /* Else reset, to cope with power loss or flush-to-storage
802 * style "resume" having activated BIOS during reboot.
803 */
804 if (port == 0) {
805 (void) ehci_halt (ehci);
806 (void) ehci_reset (ehci);
807 (void) ehci_hc_reset (hcd);
808
809 /* emptying the schedule aborts any urbs */
810 spin_lock_irq (&ehci->lock);
811 if (ehci->reclaim)
812 ehci->reclaim_ready = 1;
813 ehci_work (ehci, NULL);
814 spin_unlock_irq (&ehci->lock);
815
816 /* restart; khubd will disconnect devices */
817 retval = ehci_start (hcd);
818
819 /* here we "know" root ports should always stay powered;
820 * but some controllers may lose all power.
821 */
822 ehci_port_power (ehci, 1);
823 }
824
825 return retval;
826}
827
828#endif
829
830/*-------------------------------------------------------------------------*/
831
832/*
833 * ehci_work is called from some interrupts, timers, and so on.
834 * it calls driver completion functions, after dropping ehci->lock.
835 */
836static void ehci_work (struct ehci_hcd *ehci, struct pt_regs *regs)
837{
838 timer_action_done (ehci, TIMER_IO_WATCHDOG);
839 if (ehci->reclaim_ready)
840 end_unlink_async (ehci, regs);
841
842 /* another CPU may drop ehci->lock during a schedule scan while
843 * it reports urb completions. this flag guards against bogus
844 * attempts at re-entrant schedule scanning.
845 */
846 if (ehci->scanning)
847 return;
848 ehci->scanning = 1;
849 scan_async (ehci, regs);
850 if (ehci->next_uframe != -1)
851 scan_periodic (ehci, regs);
852 ehci->scanning = 0;
853
854 /* the IO watchdog guards against hardware or driver bugs that
855 * misplace IRQs, and should let us run completely without IRQs.
856 * such lossage has been observed on both VT6202 and VT8235.
857 */
858 if (HC_IS_RUNNING (ehci_to_hcd(ehci)->state) &&
859 (ehci->async->qh_next.ptr != NULL ||
860 ehci->periodic_sched != 0))
861 timer_action (ehci, TIMER_IO_WATCHDOG);
862}
863
864/*-------------------------------------------------------------------------*/ 565/*-------------------------------------------------------------------------*/
865 566
866static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs) 567static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs)
@@ -1171,106 +872,24 @@ done:
1171 return; 872 return;
1172} 873}
1173 874
1174/*-------------------------------------------------------------------------*/ 875static int ehci_get_frame (struct usb_hcd *hcd)
1175 876{
1176static const struct hc_driver ehci_driver = { 877 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
1177 .description = hcd_name, 878 return (readl (&ehci->regs->frame_index) >> 3) % ehci->periodic_size;
1178 .product_desc = "EHCI Host Controller", 879}
1179 .hcd_priv_size = sizeof(struct ehci_hcd),
1180
1181 /*
1182 * generic hardware linkage
1183 */
1184 .irq = ehci_irq,
1185 .flags = HCD_MEMORY | HCD_USB2,
1186
1187 /*
1188 * basic lifecycle operations
1189 */
1190 .reset = ehci_hc_reset,
1191 .start = ehci_start,
1192#ifdef CONFIG_PM
1193 .suspend = ehci_suspend,
1194 .resume = ehci_resume,
1195#endif
1196 .stop = ehci_stop,
1197
1198 /*
1199 * managing i/o requests and associated device resources
1200 */
1201 .urb_enqueue = ehci_urb_enqueue,
1202 .urb_dequeue = ehci_urb_dequeue,
1203 .endpoint_disable = ehci_endpoint_disable,
1204
1205 /*
1206 * scheduling support
1207 */
1208 .get_frame_number = ehci_get_frame,
1209
1210 /*
1211 * root hub support
1212 */
1213 .hub_status_data = ehci_hub_status_data,
1214 .hub_control = ehci_hub_control,
1215 .hub_suspend = ehci_hub_suspend,
1216 .hub_resume = ehci_hub_resume,
1217};
1218 880
1219/*-------------------------------------------------------------------------*/ 881/*-------------------------------------------------------------------------*/
1220 882
1221/* EHCI 1.0 doesn't require PCI */
1222
1223#ifdef CONFIG_PCI
1224
1225/* PCI driver selection metadata; PCI hotplugging uses this */
1226static const struct pci_device_id pci_ids [] = { {
1227 /* handle any USB 2.0 EHCI controller */
1228 PCI_DEVICE_CLASS(((PCI_CLASS_SERIAL_USB << 8) | 0x20), ~0),
1229 .driver_data = (unsigned long) &ehci_driver,
1230 },
1231 { /* end: all zeroes */ }
1232};
1233MODULE_DEVICE_TABLE (pci, pci_ids);
1234
1235/* pci driver glue; this is a "new style" PCI driver module */
1236static struct pci_driver ehci_pci_driver = {
1237 .name = (char *) hcd_name,
1238 .id_table = pci_ids,
1239
1240 .probe = usb_hcd_pci_probe,
1241 .remove = usb_hcd_pci_remove,
1242
1243#ifdef CONFIG_PM
1244 .suspend = usb_hcd_pci_suspend,
1245 .resume = usb_hcd_pci_resume,
1246#endif
1247};
1248
1249#endif /* PCI */
1250
1251
1252#define DRIVER_INFO DRIVER_VERSION " " DRIVER_DESC 883#define DRIVER_INFO DRIVER_VERSION " " DRIVER_DESC
1253 884
1254MODULE_DESCRIPTION (DRIVER_INFO); 885MODULE_DESCRIPTION (DRIVER_INFO);
1255MODULE_AUTHOR (DRIVER_AUTHOR); 886MODULE_AUTHOR (DRIVER_AUTHOR);
1256MODULE_LICENSE ("GPL"); 887MODULE_LICENSE ("GPL");
1257 888
1258static int __init init (void) 889#ifdef CONFIG_PCI
1259{ 890#include "ehci-pci.c"
1260 if (usb_disabled()) 891#endif
1261 return -ENODEV;
1262
1263 pr_debug ("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
1264 hcd_name,
1265 sizeof (struct ehci_qh), sizeof (struct ehci_qtd),
1266 sizeof (struct ehci_itd), sizeof (struct ehci_sitd));
1267
1268 return pci_register_driver (&ehci_pci_driver);
1269}
1270module_init (init);
1271 892
1272static void __exit cleanup (void) 893#if !defined(CONFIG_PCI)
1273{ 894#error "missing bus glue for ehci-hcd"
1274 pci_unregister_driver (&ehci_pci_driver); 895#endif
1275}
1276module_exit (cleanup);
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 18d3f2270316..88cb4ada686e 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -30,7 +30,7 @@
30 30
31#ifdef CONFIG_PM 31#ifdef CONFIG_PM
32 32
33static int ehci_hub_suspend (struct usb_hcd *hcd) 33static int ehci_bus_suspend (struct usb_hcd *hcd)
34{ 34{
35 struct ehci_hcd *ehci = hcd_to_ehci (hcd); 35 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
36 int port; 36 int port;
@@ -83,7 +83,7 @@ static int ehci_hub_suspend (struct usb_hcd *hcd)
83 83
84 84
85/* caller has locked the root hub, and should reset/reinit on error */ 85/* caller has locked the root hub, and should reset/reinit on error */
86static int ehci_hub_resume (struct usb_hcd *hcd) 86static int ehci_bus_resume (struct usb_hcd *hcd)
87{ 87{
88 struct ehci_hcd *ehci = hcd_to_ehci (hcd); 88 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
89 u32 temp; 89 u32 temp;
@@ -159,8 +159,8 @@ static int ehci_hub_resume (struct usb_hcd *hcd)
159 159
160#else 160#else
161 161
162#define ehci_hub_suspend NULL 162#define ehci_bus_suspend NULL
163#define ehci_hub_resume NULL 163#define ehci_bus_resume NULL
164 164
165#endif /* CONFIG_PM */ 165#endif /* CONFIG_PM */
166 166
diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
new file mode 100644
index 000000000000..145008853966
--- /dev/null
+++ b/drivers/usb/host/ehci-pci.c
@@ -0,0 +1,415 @@
1/*
2 * EHCI HCD (Host Controller Driver) PCI Bus Glue.
3 *
4 * Copyright (c) 2000-2004 by David Brownell
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2 of the License, or (at your
9 * option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21#ifndef CONFIG_PCI
22#error "This file is PCI bus glue. CONFIG_PCI must be defined."
23#endif
24
25/*-------------------------------------------------------------------------*/
26
27/* EHCI 0.96 (and later) section 5.1 says how to kick BIOS/SMM/...
28 * off the controller (maybe it can boot from highspeed USB disks).
29 */
30static int bios_handoff (struct ehci_hcd *ehci, int where, u32 cap)
31{
32 struct pci_dev *pdev = to_pci_dev(ehci_to_hcd(ehci)->self.controller);
33
34 /* always say Linux will own the hardware */
35 pci_write_config_byte(pdev, where + 3, 1);
36
37 /* maybe wait a while for BIOS to respond */
38 if (cap & (1 << 16)) {
39 int msec = 5000;
40
41 do {
42 msleep(10);
43 msec -= 10;
44 pci_read_config_dword(pdev, where, &cap);
45 } while ((cap & (1 << 16)) && msec);
46 if (cap & (1 << 16)) {
47 ehci_err(ehci, "BIOS handoff failed (%d, %08x)\n",
48 where, cap);
49 // some BIOS versions seem buggy...
50 // return 1;
51 ehci_warn (ehci, "continuing after BIOS bug...\n");
52 /* disable all SMIs, and clear "BIOS owns" flag */
53 pci_write_config_dword(pdev, where + 4, 0);
54 pci_write_config_byte(pdev, where + 2, 0);
55 } else
56 ehci_dbg(ehci, "BIOS handoff succeeded\n");
57 }
58 return 0;
59}
60
61/* called by khubd or root hub init threads */
62static int ehci_pci_reset (struct usb_hcd *hcd)
63{
64 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
65 u32 temp;
66 unsigned count = 256/4;
67
68 spin_lock_init (&ehci->lock);
69
70 ehci->caps = hcd->regs;
71 ehci->regs = hcd->regs + HC_LENGTH (readl (&ehci->caps->hc_capbase));
72 dbg_hcs_params (ehci, "reset");
73 dbg_hcc_params (ehci, "reset");
74
75 /* cache this readonly data; minimize chip reads */
76 ehci->hcs_params = readl (&ehci->caps->hcs_params);
77
78 if (hcd->self.controller->bus == &pci_bus_type) {
79 struct pci_dev *pdev = to_pci_dev(hcd->self.controller);
80
81 switch (pdev->vendor) {
82 case PCI_VENDOR_ID_TDI:
83 if (pdev->device == PCI_DEVICE_ID_TDI_EHCI) {
84 ehci->is_tdi_rh_tt = 1;
85 tdi_reset (ehci);
86 }
87 break;
88 case PCI_VENDOR_ID_AMD:
89 /* AMD8111 EHCI doesn't work, according to AMD errata */
90 if (pdev->device == 0x7463) {
91 ehci_info (ehci, "ignoring AMD8111 (errata)\n");
92 return -EIO;
93 }
94 break;
95 case PCI_VENDOR_ID_NVIDIA:
96 /* NVidia reports that certain chips don't handle
97 * QH, ITD, or SITD addresses above 2GB. (But TD,
98 * data buffer, and periodic schedule are normal.)
99 */
100 switch (pdev->device) {
101 case 0x003c: /* MCP04 */
102 case 0x005b: /* CK804 */
103 case 0x00d8: /* CK8 */
104 case 0x00e8: /* CK8S */
105 if (pci_set_consistent_dma_mask(pdev,
106 DMA_31BIT_MASK) < 0)
107 ehci_warn (ehci, "can't enable NVidia "
108 "workaround for >2GB RAM\n");
109 break;
110 }
111 break;
112 }
113
114 /* optional debug port, normally in the first BAR */
115 temp = pci_find_capability (pdev, 0x0a);
116 if (temp) {
117 pci_read_config_dword(pdev, temp, &temp);
118 temp >>= 16;
119 if ((temp & (3 << 13)) == (1 << 13)) {
120 temp &= 0x1fff;
121 ehci->debug = hcd->regs + temp;
122 temp = readl (&ehci->debug->control);
123 ehci_info (ehci, "debug port %d%s\n",
124 HCS_DEBUG_PORT(ehci->hcs_params),
125 (temp & DBGP_ENABLED)
126 ? " IN USE"
127 : "");
128 if (!(temp & DBGP_ENABLED))
129 ehci->debug = NULL;
130 }
131 }
132
133 temp = HCC_EXT_CAPS (readl (&ehci->caps->hcc_params));
134 } else
135 temp = 0;
136
137 /* EHCI 0.96 and later may have "extended capabilities" */
138 while (temp && count--) {
139 u32 cap;
140
141 pci_read_config_dword (to_pci_dev(hcd->self.controller),
142 temp, &cap);
143 ehci_dbg (ehci, "capability %04x at %02x\n", cap, temp);
144 switch (cap & 0xff) {
145 case 1: /* BIOS/SMM/... handoff */
146 if (bios_handoff (ehci, temp, cap) != 0)
147 return -EOPNOTSUPP;
148 break;
149 case 0: /* illegal reserved capability */
150 ehci_warn (ehci, "illegal capability!\n");
151 cap = 0;
152 /* FALLTHROUGH */
153 default: /* unknown */
154 break;
155 }
156 temp = (cap >> 8) & 0xff;
157 }
158 if (!count) {
159 ehci_err (ehci, "bogus capabilities ... PCI problems!\n");
160 return -EIO;
161 }
162 if (ehci_is_TDI(ehci))
163 ehci_reset (ehci);
164
165 ehci_port_power (ehci, 0);
166
167 /* at least the Genesys GL880S needs fixup here */
168 temp = HCS_N_CC(ehci->hcs_params) * HCS_N_PCC(ehci->hcs_params);
169 temp &= 0x0f;
170 if (temp && HCS_N_PORTS(ehci->hcs_params) > temp) {
171 ehci_dbg (ehci, "bogus port configuration: "
172 "cc=%d x pcc=%d < ports=%d\n",
173 HCS_N_CC(ehci->hcs_params),
174 HCS_N_PCC(ehci->hcs_params),
175 HCS_N_PORTS(ehci->hcs_params));
176
177 if (hcd->self.controller->bus == &pci_bus_type) {
178 struct pci_dev *pdev;
179
180 pdev = to_pci_dev(hcd->self.controller);
181 switch (pdev->vendor) {
182 case 0x17a0: /* GENESYS */
183 /* GL880S: should be PORTS=2 */
184 temp |= (ehci->hcs_params & ~0xf);
185 ehci->hcs_params = temp;
186 break;
187 case PCI_VENDOR_ID_NVIDIA:
188 /* NF4: should be PCC=10 */
189 break;
190 }
191 }
192 }
193
194 /* force HC to halt state */
195 return ehci_halt (ehci);
196}
197
198static int ehci_pci_start (struct usb_hcd *hcd)
199{
200 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
201 int result = 0;
202
203 if (hcd->self.controller->bus == &pci_bus_type) {
204 struct pci_dev *pdev;
205 u16 port_wake;
206
207 pdev = to_pci_dev(hcd->self.controller);
208
209 /* Serial Bus Release Number is at PCI 0x60 offset */
210 pci_read_config_byte(pdev, 0x60, &ehci->sbrn);
211
212 /* port wake capability, reported by boot firmware */
213 pci_read_config_word(pdev, 0x62, &port_wake);
214 hcd->can_wakeup = (port_wake & 1) != 0;
215
216 /* help hc dma work well with cachelines */
217 result = pci_set_mwi(pdev);
218 if (result)
219 ehci_dbg(ehci, "unable to enable MWI - not fatal.\n");
220 }
221
222 return ehci_run (hcd);
223}
224
225/* always called by thread; normally rmmod */
226
227static void ehci_pci_stop (struct usb_hcd *hcd)
228{
229 ehci_stop (hcd);
230}
231
232/*-------------------------------------------------------------------------*/
233
234#ifdef CONFIG_PM
235
236/* suspend/resume, section 4.3 */
237
238/* These routines rely on the bus (pci, platform, etc)
239 * to handle powerdown and wakeup, and currently also on
240 * transceivers that don't need any software attention to set up
241 * the right sort of wakeup.
242 */
243
244static int ehci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
245{
246 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
247
248 if (time_before (jiffies, ehci->next_statechange))
249 msleep (100);
250
251#ifdef CONFIG_USB_SUSPEND
252 (void) usb_suspend_device (hcd->self.root_hub);
253#else
254 usb_lock_device (hcd->self.root_hub);
255 (void) ehci_bus_suspend (hcd);
256 usb_unlock_device (hcd->self.root_hub);
257#endif
258
259 // save (PCI) FLADJ in case of Vaux power loss
260 // ... we'd only use it to handle clock skew
261
262 return 0;
263}
264
265static int ehci_pci_resume (struct usb_hcd *hcd)
266{
267 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
268 unsigned port;
269 struct usb_device *root = hcd->self.root_hub;
270 int retval = -EINVAL;
271
272 // maybe restore (PCI) FLADJ
273
274 if (time_before (jiffies, ehci->next_statechange))
275 msleep (100);
276
277 /* If any port is suspended (or owned by the companion),
278 * we know we can/must resume the HC (and mustn't reset it).
279 */
280 for (port = HCS_N_PORTS (ehci->hcs_params); port > 0; ) {
281 u32 status;
282 port--;
283 status = readl (&ehci->regs->port_status [port]);
284 if (!(status & PORT_POWER))
285 continue;
286 if (status & (PORT_SUSPEND | PORT_OWNER)) {
287 down (&hcd->self.root_hub->serialize);
288 retval = ehci_bus_resume (hcd);
289 up (&hcd->self.root_hub->serialize);
290 break;
291 }
292 if (!root->children [port])
293 continue;
294 dbg_port (ehci, __FUNCTION__, port + 1, status);
295 usb_set_device_state (root->children[port],
296 USB_STATE_NOTATTACHED);
297 }
298
299 /* Else reset, to cope with power loss or flush-to-storage
300 * style "resume" having activated BIOS during reboot.
301 */
302 if (port == 0) {
303 (void) ehci_halt (ehci);
304 (void) ehci_reset (ehci);
305 (void) ehci_pci_reset (hcd);
306
307 /* emptying the schedule aborts any urbs */
308 spin_lock_irq (&ehci->lock);
309 if (ehci->reclaim)
310 ehci->reclaim_ready = 1;
311 ehci_work (ehci, NULL);
312 spin_unlock_irq (&ehci->lock);
313
314 /* restart; khubd will disconnect devices */
315 retval = ehci_run (hcd);
316
317 /* here we "know" root ports should always stay powered;
318 * but some controllers may lose all power.
319 */
320 ehci_port_power (ehci, 1);
321 }
322
323 return retval;
324}
325#endif
326
327static const struct hc_driver ehci_pci_hc_driver = {
328 .description = hcd_name,
329 .product_desc = "EHCI Host Controller",
330 .hcd_priv_size = sizeof(struct ehci_hcd),
331
332 /*
333 * generic hardware linkage
334 */
335 .irq = ehci_irq,
336 .flags = HCD_MEMORY | HCD_USB2,
337
338 /*
339 * basic lifecycle operations
340 */
341 .reset = ehci_pci_reset,
342 .start = ehci_pci_start,
343#ifdef CONFIG_PM
344 .suspend = ehci_pci_suspend,
345 .resume = ehci_pci_resume,
346#endif
347 .stop = ehci_pci_stop,
348
349 /*
350 * managing i/o requests and associated device resources
351 */
352 .urb_enqueue = ehci_urb_enqueue,
353 .urb_dequeue = ehci_urb_dequeue,
354 .endpoint_disable = ehci_endpoint_disable,
355
356 /*
357 * scheduling support
358 */
359 .get_frame_number = ehci_get_frame,
360
361 /*
362 * root hub support
363 */
364 .hub_status_data = ehci_hub_status_data,
365 .hub_control = ehci_hub_control,
366 .bus_suspend = ehci_bus_suspend,
367 .bus_resume = ehci_bus_resume,
368};
369
370/*-------------------------------------------------------------------------*/
371
372/* PCI driver selection metadata; PCI hotplugging uses this */
373static const struct pci_device_id pci_ids [] = { {
374 /* handle any USB 2.0 EHCI controller */
375 PCI_DEVICE_CLASS(((PCI_CLASS_SERIAL_USB << 8) | 0x20), ~0),
376 .driver_data = (unsigned long) &ehci_pci_hc_driver,
377 },
378 { /* end: all zeroes */ }
379};
380MODULE_DEVICE_TABLE (pci, pci_ids);
381
382/* pci driver glue; this is a "new style" PCI driver module */
383static struct pci_driver ehci_pci_driver = {
384 .name = (char *) hcd_name,
385 .id_table = pci_ids,
386 .owner = THIS_MODULE,
387
388 .probe = usb_hcd_pci_probe,
389 .remove = usb_hcd_pci_remove,
390
391#ifdef CONFIG_PM
392 .suspend = usb_hcd_pci_suspend,
393 .resume = usb_hcd_pci_resume,
394#endif
395};
396
397static int __init ehci_hcd_pci_init (void)
398{
399 if (usb_disabled())
400 return -ENODEV;
401
402 pr_debug ("%s: block sizes: qh %Zd qtd %Zd itd %Zd sitd %Zd\n",
403 hcd_name,
404 sizeof (struct ehci_qh), sizeof (struct ehci_qtd),
405 sizeof (struct ehci_itd), sizeof (struct ehci_sitd));
406
407 return pci_register_driver (&ehci_pci_driver);
408}
409module_init (ehci_hcd_pci_init);
410
411static void __exit ehci_hcd_pci_cleanup (void)
412{
413 pci_unregister_driver (&ehci_pci_driver);
414}
415module_exit (ehci_hcd_pci_cleanup);
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index f34a0516d35f..18e257c2bdb5 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -97,6 +97,7 @@ struct ehci_hcd { /* one per controller */
97#else 97#else
98# define COUNT(x) do {} while (0) 98# define COUNT(x) do {} while (0)
99#endif 99#endif
100 u8 sbrn; /* packed release number */
100}; 101};
101 102
102/* convert between an HCD pointer and the corresponding EHCI_HCD */ 103/* convert between an HCD pointer and the corresponding EHCI_HCD */
diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c
index 642f35068ce2..ddb8fc591466 100644
--- a/drivers/usb/host/isp116x-hcd.c
+++ b/drivers/usb/host/isp116x-hcd.c
@@ -638,7 +638,7 @@ static irqreturn_t isp116x_irq(struct usb_hcd *hcd, struct pt_regs *regs)
638 + msecs_to_jiffies(20) + 1); 638 + msecs_to_jiffies(20) + 1);
639 if (intstat & HCINT_RD) { 639 if (intstat & HCINT_RD) {
640 DBG("---- remote wakeup\n"); 640 DBG("---- remote wakeup\n");
641 schedule_work(&isp116x->rh_resume); 641 usb_hcd_resume_root_hub(hcd);
642 ret = IRQ_HANDLED; 642 ret = IRQ_HANDLED;
643 } 643 }
644 irqstat &= ~HCuPINT_OPR; 644 irqstat &= ~HCuPINT_OPR;
@@ -1160,7 +1160,7 @@ static int isp116x_hub_control(struct usb_hcd *hcd,
1160 1160
1161#ifdef CONFIG_PM 1161#ifdef CONFIG_PM
1162 1162
1163static int isp116x_hub_suspend(struct usb_hcd *hcd) 1163static int isp116x_bus_suspend(struct usb_hcd *hcd)
1164{ 1164{
1165 struct isp116x *isp116x = hcd_to_isp116x(hcd); 1165 struct isp116x *isp116x = hcd_to_isp116x(hcd);
1166 unsigned long flags; 1166 unsigned long flags;
@@ -1200,7 +1200,7 @@ static int isp116x_hub_suspend(struct usb_hcd *hcd)
1200 return ret; 1200 return ret;
1201} 1201}
1202 1202
1203static int isp116x_hub_resume(struct usb_hcd *hcd) 1203static int isp116x_bus_resume(struct usb_hcd *hcd)
1204{ 1204{
1205 struct isp116x *isp116x = hcd_to_isp116x(hcd); 1205 struct isp116x *isp116x = hcd_to_isp116x(hcd);
1206 u32 val; 1206 u32 val;
@@ -1263,21 +1263,11 @@ static int isp116x_hub_resume(struct usb_hcd *hcd)
1263 return 0; 1263 return 0;
1264} 1264}
1265 1265
1266static void isp116x_rh_resume(void *_hcd)
1267{
1268 struct usb_hcd *hcd = _hcd;
1269
1270 usb_resume_device(hcd->self.root_hub);
1271}
1272 1266
1273#else 1267#else
1274 1268
1275#define isp116x_hub_suspend NULL 1269#define isp116x_bus_suspend NULL
1276#define isp116x_hub_resume NULL 1270#define isp116x_bus_resume NULL
1277
1278static void isp116x_rh_resume(void *_hcd)
1279{
1280}
1281 1271
1282#endif 1272#endif
1283 1273
@@ -1636,8 +1626,8 @@ static struct hc_driver isp116x_hc_driver = {
1636 1626
1637 .hub_status_data = isp116x_hub_status_data, 1627 .hub_status_data = isp116x_hub_status_data,
1638 .hub_control = isp116x_hub_control, 1628 .hub_control = isp116x_hub_control,
1639 .hub_suspend = isp116x_hub_suspend, 1629 .bus_suspend = isp116x_bus_suspend,
1640 .hub_resume = isp116x_hub_resume, 1630 .bus_resume = isp116x_bus_resume,
1641}; 1631};
1642 1632
1643/*----------------------------------------------------------------*/ 1633/*----------------------------------------------------------------*/
@@ -1732,7 +1722,6 @@ static int __init isp116x_probe(struct device *dev)
1732 isp116x->addr_reg = addr_reg; 1722 isp116x->addr_reg = addr_reg;
1733 spin_lock_init(&isp116x->lock); 1723 spin_lock_init(&isp116x->lock);
1734 INIT_LIST_HEAD(&isp116x->async); 1724 INIT_LIST_HEAD(&isp116x->async);
1735 INIT_WORK(&isp116x->rh_resume, isp116x_rh_resume, hcd);
1736 isp116x->board = dev->platform_data; 1725 isp116x->board = dev->platform_data;
1737 1726
1738 if (!isp116x->board) { 1727 if (!isp116x->board) {
@@ -1777,16 +1766,10 @@ static int __init isp116x_probe(struct device *dev)
1777static int isp116x_suspend(struct device *dev, pm_message_t state) 1766static int isp116x_suspend(struct device *dev, pm_message_t state)
1778{ 1767{
1779 int ret = 0; 1768 int ret = 0;
1780 struct usb_hcd *hcd = dev_get_drvdata(dev);
1781 1769
1782 VDBG("%s: state %x\n", __func__, state); 1770 VDBG("%s: state %x\n", __func__, state);
1783 1771
1784 ret = usb_suspend_device(hcd->self.root_hub, state); 1772 dev->power.power_state = state;
1785 if (!ret) {
1786 dev->power.power_state = state;
1787 INFO("%s suspended\n", hcd_name);
1788 } else
1789 ERR("%s suspend failed\n", hcd_name);
1790 1773
1791 return ret; 1774 return ret;
1792} 1775}
@@ -1797,15 +1780,11 @@ static int isp116x_suspend(struct device *dev, pm_message_t state)
1797static int isp116x_resume(struct device *dev) 1780static int isp116x_resume(struct device *dev)
1798{ 1781{
1799 int ret = 0; 1782 int ret = 0;
1800 struct usb_hcd *hcd = dev_get_drvdata(dev);
1801 1783
1802 VDBG("%s: state %x\n", __func__, dev->power.power_state); 1784 VDBG("%s: state %x\n", __func__, dev->power.power_state);
1803 1785
1804 ret = usb_resume_device(hcd->self.root_hub); 1786 dev->power.power_state = PMSG_ON;
1805 if (!ret) { 1787
1806 dev->power.power_state = PMSG_ON;
1807 VDBG("%s resumed\n", (char *)hcd_name);
1808 }
1809 return ret; 1788 return ret;
1810} 1789}
1811 1790
diff --git a/drivers/usb/host/isp116x.h b/drivers/usb/host/isp116x.h
index 58873470dcf5..c6fec96785fe 100644
--- a/drivers/usb/host/isp116x.h
+++ b/drivers/usb/host/isp116x.h
@@ -253,7 +253,6 @@ static const int cc_to_error[16] = {
253 253
254struct isp116x { 254struct isp116x {
255 spinlock_t lock; 255 spinlock_t lock;
256 struct work_struct rh_resume;
257 256
258 void __iomem *addr_reg; 257 void __iomem *addr_reg;
259 void __iomem *data_reg; 258 void __iomem *data_reg;
diff --git a/drivers/usb/host/ohci-au1xxx.c b/drivers/usb/host/ohci-au1xxx.c
index 3981bf15c8c7..a277e258eb6c 100644
--- a/drivers/usb/host/ohci-au1xxx.c
+++ b/drivers/usb/host/ohci-au1xxx.c
@@ -214,6 +214,11 @@ static const struct hc_driver ohci_au1xxx_hc_driver = {
214 */ 214 */
215 .hub_status_data = ohci_hub_status_data, 215 .hub_status_data = ohci_hub_status_data,
216 .hub_control = ohci_hub_control, 216 .hub_control = ohci_hub_control,
217#ifdef CONFIG_PM
218 .bus_suspend = ohci_bus_suspend,
219 .bus_resume = ohci_bus_resume,
220#endif
221 .start_port_reset = ohci_start_port_reset,
217}; 222};
218 223
219/*-------------------------------------------------------------------------*/ 224/*-------------------------------------------------------------------------*/
@@ -259,6 +264,7 @@ static int ohci_hcd_au1xxx_drv_resume(struct device *dev)
259 264
260static struct device_driver ohci_hcd_au1xxx_driver = { 265static struct device_driver ohci_hcd_au1xxx_driver = {
261 .name = "au1xxx-ohci", 266 .name = "au1xxx-ohci",
267 .owner = THIS_MODULE,
262 .bus = &platform_bus_type, 268 .bus = &platform_bus_type,
263 .probe = ohci_hcd_au1xxx_drv_probe, 269 .probe = ohci_hcd_au1xxx_drv_probe,
264 .remove = ohci_hcd_au1xxx_drv_remove, 270 .remove = ohci_hcd_au1xxx_drv_remove,
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index 7924c74f958e..7bfffcbbd226 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -193,10 +193,6 @@ ohci_dump_status (struct ohci_hcd *controller, char **next, unsigned *size)
193 193
194 maybe_print_eds (controller, "donehead", 194 maybe_print_eds (controller, "donehead",
195 ohci_readl (controller, &regs->donehead), next, size); 195 ohci_readl (controller, &regs->donehead), next, size);
196
197 /* broken fminterval means traffic won't flow! */
198 ohci_dbg (controller, "fminterval %08x\n",
199 ohci_readl (controller, &regs->fminterval));
200} 196}
201 197
202#define dbg_port_sw(hc,num,value,next,size) \ 198#define dbg_port_sw(hc,num,value,next,size) \
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index f8da8c7af7c6..5c0c6c8a7a82 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -723,7 +723,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs)
723 ohci_vdbg (ohci, "resume detect\n"); 723 ohci_vdbg (ohci, "resume detect\n");
724 ohci_writel (ohci, OHCI_INTR_RD, &regs->intrstatus); 724 ohci_writel (ohci, OHCI_INTR_RD, &regs->intrstatus);
725 if (hcd->state != HC_STATE_QUIESCING) 725 if (hcd->state != HC_STATE_QUIESCING)
726 schedule_work(&ohci->rh_resume); 726 usb_hcd_resume_root_hub(hcd);
727 } 727 }
728 728
729 if (ints & OHCI_INTR_WDH) { 729 if (ints & OHCI_INTR_WDH) {
@@ -791,7 +791,7 @@ static void ohci_stop (struct usb_hcd *hcd)
791 791
792/* must not be called from interrupt context */ 792/* must not be called from interrupt context */
793 793
794#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) 794#ifdef CONFIG_PM
795 795
796static int ohci_restart (struct ohci_hcd *ohci) 796static int ohci_restart (struct ohci_hcd *ohci)
797{ 797{
diff --git a/drivers/usb/host/ohci-hub.c b/drivers/usb/host/ohci-hub.c
index ce7b28da7a15..e01e77bc324b 100644
--- a/drivers/usb/host/ohci-hub.c
+++ b/drivers/usb/host/ohci-hub.c
@@ -36,7 +36,7 @@
36 36
37/*-------------------------------------------------------------------------*/ 37/*-------------------------------------------------------------------------*/
38 38
39#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) 39#ifdef CONFIG_PM
40 40
41#define OHCI_SCHED_ENABLES \ 41#define OHCI_SCHED_ENABLES \
42 (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE) 42 (OHCI_CTRL_CLE|OHCI_CTRL_BLE|OHCI_CTRL_PLE|OHCI_CTRL_IE)
@@ -45,7 +45,7 @@ static void dl_done_list (struct ohci_hcd *, struct pt_regs *);
45static void finish_unlinks (struct ohci_hcd *, u16 , struct pt_regs *); 45static void finish_unlinks (struct ohci_hcd *, u16 , struct pt_regs *);
46static int ohci_restart (struct ohci_hcd *ohci); 46static int ohci_restart (struct ohci_hcd *ohci);
47 47
48static int ohci_hub_suspend (struct usb_hcd *hcd) 48static int ohci_bus_suspend (struct usb_hcd *hcd)
49{ 49{
50 struct ohci_hcd *ohci = hcd_to_ohci (hcd); 50 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
51 int status = 0; 51 int status = 0;
@@ -73,7 +73,6 @@ static int ohci_hub_suspend (struct usb_hcd *hcd)
73 ohci_dbg (ohci, "suspend root hub\n"); 73 ohci_dbg (ohci, "suspend root hub\n");
74 74
75 /* First stop any processing */ 75 /* First stop any processing */
76 hcd->state = HC_STATE_QUIESCING;
77 if (ohci->hc_control & OHCI_SCHED_ENABLES) { 76 if (ohci->hc_control & OHCI_SCHED_ENABLES) {
78 int limit; 77 int limit;
79 78
@@ -108,7 +107,9 @@ static int ohci_hub_suspend (struct usb_hcd *hcd)
108 else 107 else
109 ohci->hc_control &= ~OHCI_CTRL_RWE; 108 ohci->hc_control &= ~OHCI_CTRL_RWE;
110 109
111 /* Suspend hub */ 110 /* Suspend hub ... this is the "global (to this bus) suspend" mode,
111 * which doesn't imply ports will first be individually suspended.
112 */
112 ohci->hc_control &= ~OHCI_CTRL_HCFS; 113 ohci->hc_control &= ~OHCI_CTRL_HCFS;
113 ohci->hc_control |= OHCI_USB_SUSPEND; 114 ohci->hc_control |= OHCI_USB_SUSPEND;
114 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control); 115 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
@@ -118,8 +119,9 @@ static int ohci_hub_suspend (struct usb_hcd *hcd)
118 ohci->next_statechange = jiffies + msecs_to_jiffies (5); 119 ohci->next_statechange = jiffies + msecs_to_jiffies (5);
119 120
120done: 121done:
122 /* external suspend vs self autosuspend ... same effect */
121 if (status == 0) 123 if (status == 0)
122 hcd->state = HC_STATE_SUSPENDED; 124 usb_hcd_suspend_root_hub(hcd);
123 spin_unlock_irqrestore (&ohci->lock, flags); 125 spin_unlock_irqrestore (&ohci->lock, flags);
124 return status; 126 return status;
125} 127}
@@ -133,7 +135,7 @@ static inline struct ed *find_head (struct ed *ed)
133} 135}
134 136
135/* caller has locked the root hub */ 137/* caller has locked the root hub */
136static int ohci_hub_resume (struct usb_hcd *hcd) 138static int ohci_bus_resume (struct usb_hcd *hcd)
137{ 139{
138 struct ohci_hcd *ohci = hcd_to_ohci (hcd); 140 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
139 u32 temp, enables; 141 u32 temp, enables;
@@ -146,7 +148,7 @@ static int ohci_hub_resume (struct usb_hcd *hcd)
146 ohci->hc_control = ohci_readl (ohci, &ohci->regs->control); 148 ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
147 149
148 if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) { 150 if (ohci->hc_control & (OHCI_CTRL_IR | OHCI_SCHED_ENABLES)) {
149 /* this can happen after suspend-to-disk */ 151 /* this can happen after resuming a swsusp snapshot */
150 if (hcd->state == HC_STATE_RESUMING) { 152 if (hcd->state == HC_STATE_RESUMING) {
151 ohci_dbg (ohci, "BIOS/SMM active, control %03x\n", 153 ohci_dbg (ohci, "BIOS/SMM active, control %03x\n",
152 ohci->hc_control); 154 ohci->hc_control);
@@ -169,11 +171,12 @@ static int ohci_hub_resume (struct usb_hcd *hcd)
169 ohci_info (ohci, "wakeup\n"); 171 ohci_info (ohci, "wakeup\n");
170 break; 172 break;
171 case OHCI_USB_OPER: 173 case OHCI_USB_OPER:
172 ohci_dbg (ohci, "already resumed\n"); 174 /* this can happen after resuming a swsusp snapshot */
173 status = 0; 175 ohci_dbg (ohci, "snapshot resume? reinit\n");
176 status = -EBUSY;
174 break; 177 break;
175 default: /* RESET, we lost power */ 178 default: /* RESET, we lost power */
176 ohci_dbg (ohci, "root hub hardware reset\n"); 179 ohci_dbg (ohci, "lost power\n");
177 status = -EBUSY; 180 status = -EBUSY;
178 } 181 }
179 spin_unlock_irq (&ohci->lock); 182 spin_unlock_irq (&ohci->lock);
@@ -198,8 +201,7 @@ static int ohci_hub_resume (struct usb_hcd *hcd)
198 } 201 }
199 202
200 /* Some controllers (lucent erratum) need extra-long delays */ 203 /* Some controllers (lucent erratum) need extra-long delays */
201 hcd->state = HC_STATE_RESUMING; 204 msleep (20 /* usb 11.5.1.10 */ + 12 /* 32 msec counter */ + 1);
202 mdelay (20 /* usb 11.5.1.10 */ + 15);
203 205
204 temp = ohci_readl (ohci, &ohci->regs->control); 206 temp = ohci_readl (ohci, &ohci->regs->control);
205 temp &= OHCI_CTRL_HCFS; 207 temp &= OHCI_CTRL_HCFS;
@@ -273,28 +275,10 @@ static int ohci_hub_resume (struct usb_hcd *hcd)
273 (void) ohci_readl (ohci, &ohci->regs->control); 275 (void) ohci_readl (ohci, &ohci->regs->control);
274 } 276 }
275 277
276 hcd->state = HC_STATE_RUNNING;
277 return 0; 278 return 0;
278} 279}
279 280
280static void ohci_rh_resume (void *_hcd) 281#endif /* CONFIG_PM */
281{
282 struct usb_hcd *hcd = _hcd;
283
284 usb_lock_device (hcd->self.root_hub);
285 (void) ohci_hub_resume (hcd);
286 usb_unlock_device (hcd->self.root_hub);
287}
288
289#else
290
291static void ohci_rh_resume (void *_hcd)
292{
293 struct ohci_hcd *ohci = hcd_to_ohci (_hcd);
294 ohci_dbg(ohci, "rh_resume ??\n");
295}
296
297#endif /* CONFIG_USB_SUSPEND || CONFIG_PM */
298 282
299/*-------------------------------------------------------------------------*/ 283/*-------------------------------------------------------------------------*/
300 284
@@ -367,7 +351,6 @@ done:
367#ifdef CONFIG_PM 351#ifdef CONFIG_PM
368 /* save power by suspending idle root hubs; 352 /* save power by suspending idle root hubs;
369 * INTR_RD wakes us when there's work 353 * INTR_RD wakes us when there's work
370 * NOTE: if we can do this, we don't need a root hub timer!
371 */ 354 */
372 if (can_suspend 355 if (can_suspend
373 && !changed 356 && !changed
@@ -379,8 +362,7 @@ done:
379 && usb_trylock_device (hcd->self.root_hub) 362 && usb_trylock_device (hcd->self.root_hub)
380 ) { 363 ) {
381 ohci_vdbg (ohci, "autosuspend\n"); 364 ohci_vdbg (ohci, "autosuspend\n");
382 (void) ohci_hub_suspend (hcd); 365 (void) ohci_bus_suspend (hcd);
383 hcd->state = HC_STATE_RUNNING;
384 usb_unlock_device (hcd->self.root_hub); 366 usb_unlock_device (hcd->self.root_hub);
385 } 367 }
386#endif 368#endif
@@ -554,7 +536,7 @@ static int ohci_hub_control (
554 temp = RH_PS_POCI; 536 temp = RH_PS_POCI;
555 if ((ohci->hc_control & OHCI_CTRL_HCFS) 537 if ((ohci->hc_control & OHCI_CTRL_HCFS)
556 != OHCI_USB_OPER) 538 != OHCI_USB_OPER)
557 schedule_work (&ohci->rh_resume); 539 usb_hcd_resume_root_hub(hcd);
558 break; 540 break;
559 case USB_PORT_FEAT_C_SUSPEND: 541 case USB_PORT_FEAT_C_SUSPEND:
560 temp = RH_PS_PSSC; 542 temp = RH_PS_PSSC;
diff --git a/drivers/usb/host/ohci-lh7a404.c b/drivers/usb/host/ohci-lh7a404.c
index 859aca7be753..238fa4ade615 100644
--- a/drivers/usb/host/ohci-lh7a404.c
+++ b/drivers/usb/host/ohci-lh7a404.c
@@ -193,6 +193,11 @@ static const struct hc_driver ohci_lh7a404_hc_driver = {
193 */ 193 */
194 .hub_status_data = ohci_hub_status_data, 194 .hub_status_data = ohci_hub_status_data,
195 .hub_control = ohci_hub_control, 195 .hub_control = ohci_hub_control,
196#ifdef CONFIG_PM
197 .bus_suspend = ohci_bus_suspend,
198 .bus_resume = ohci_bus_resume,
199#endif
200 .start_port_reset = ohci_start_port_reset,
196}; 201};
197 202
198/*-------------------------------------------------------------------------*/ 203/*-------------------------------------------------------------------------*/
@@ -239,6 +244,7 @@ static int ohci_hcd_lh7a404_drv_resume(struct device *dev)
239 244
240static struct device_driver ohci_hcd_lh7a404_driver = { 245static struct device_driver ohci_hcd_lh7a404_driver = {
241 .name = "lh7a404-ohci", 246 .name = "lh7a404-ohci",
247 .owner = THIS_MODULE,
242 .bus = &platform_bus_type, 248 .bus = &platform_bus_type,
243 .probe = ohci_hcd_lh7a404_drv_probe, 249 .probe = ohci_hcd_lh7a404_drv_probe,
244 .remove = ohci_hcd_lh7a404_drv_remove, 250 .remove = ohci_hcd_lh7a404_drv_remove,
diff --git a/drivers/usb/host/ohci-mem.c b/drivers/usb/host/ohci-mem.c
index 9fb83dfb1eb4..bfbe328a4788 100644
--- a/drivers/usb/host/ohci-mem.c
+++ b/drivers/usb/host/ohci-mem.c
@@ -28,7 +28,6 @@ static void ohci_hcd_init (struct ohci_hcd *ohci)
28 ohci->next_statechange = jiffies; 28 ohci->next_statechange = jiffies;
29 spin_lock_init (&ohci->lock); 29 spin_lock_init (&ohci->lock);
30 INIT_LIST_HEAD (&ohci->pending); 30 INIT_LIST_HEAD (&ohci->pending);
31 INIT_WORK (&ohci->rh_resume, ohci_rh_resume, ohci_to_hcd(ohci));
32 ohci->reboot_notifier.notifier_call = ohci_reboot; 31 ohci->reboot_notifier.notifier_call = ohci_reboot;
33} 32}
34 33
diff --git a/drivers/usb/host/ohci-omap.c b/drivers/usb/host/ohci-omap.c
index a574216625a0..45efeed1fcc3 100644
--- a/drivers/usb/host/ohci-omap.c
+++ b/drivers/usb/host/ohci-omap.c
@@ -420,9 +420,9 @@ static const struct hc_driver ohci_omap_hc_driver = {
420 */ 420 */
421 .hub_status_data = ohci_hub_status_data, 421 .hub_status_data = ohci_hub_status_data,
422 .hub_control = ohci_hub_control, 422 .hub_control = ohci_hub_control,
423#ifdef CONFIG_USB_SUSPEND 423#ifdef CONFIG_PM
424 .hub_suspend = ohci_hub_suspend, 424 .bus_suspend = ohci_bus_suspend,
425 .hub_resume = ohci_hub_resume, 425 .bus_resume = ohci_bus_resume,
426#endif 426#endif
427 .start_port_reset = ohci_start_port_reset, 427 .start_port_reset = ohci_start_port_reset,
428}; 428};
@@ -458,41 +458,29 @@ static int ohci_hcd_omap_drv_remove(struct device *dev)
458static int ohci_omap_suspend(struct device *dev, pm_message_t message) 458static int ohci_omap_suspend(struct device *dev, pm_message_t message)
459{ 459{
460 struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev)); 460 struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
461 int status = -EINVAL; 461
462 462 if (time_before(jiffies, ohci->next_statechange))
463 down(&ohci_to_hcd(ohci)->self.root_hub->serialize); 463 msleep(5);
464 status = ohci_hub_suspend(ohci_to_hcd(ohci)); 464 ohci->next_statechange = jiffies;
465 if (status == 0) { 465
466 omap_ohci_clock_power(0); 466 omap_ohci_clock_power(0);
467 ohci_to_hcd(ohci)->self.root_hub->state = 467 ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED;
468 USB_STATE_SUSPENDED; 468 dev->power.power_state = PMSG_SUSPEND;
469 ohci_to_hcd(ohci)->state = HC_STATE_SUSPENDED; 469 return 0;
470 dev->power.power_state = PMSG_SUSPEND;
471 }
472 up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
473 return status;
474} 470}
475 471
476static int ohci_omap_resume(struct device *dev) 472static int ohci_omap_resume(struct device *dev)
477{ 473{
478 struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev)); 474 struct ohci_hcd *ohci = hcd_to_ohci(dev_get_drvdata(dev));
479 int status = 0;
480 475
481 if (time_before(jiffies, ohci->next_statechange)) 476 if (time_before(jiffies, ohci->next_statechange))
482 msleep(5); 477 msleep(5);
483 ohci->next_statechange = jiffies; 478 ohci->next_statechange = jiffies;
479
484 omap_ohci_clock_power(1); 480 omap_ohci_clock_power(1);
485#ifdef CONFIG_USB_SUSPEND 481 dev->power.power_state = PMSG_ON;
486 /* get extra cleanup even if remote wakeup isn't in use */ 482 usb_hcd_resume_root_hub(dev_get_drvdata(dev));
487 status = usb_resume_device(ohci_to_hcd(ohci)->self.root_hub); 483 return 0;
488#else
489 down(&ohci_to_hcd(ohci)->self.root_hub->serialize);
490 status = ohci_hub_resume(ohci_to_hcd(ohci));
491 up(&ohci_to_hcd(ohci)->self.root_hub->serialize);
492#endif
493 if (status == 0)
494 dev->power.power_state = PMSG_ON;
495 return status;
496} 484}
497 485
498#endif 486#endif
@@ -504,6 +492,7 @@ static int ohci_omap_resume(struct device *dev)
504 */ 492 */
505static struct device_driver ohci_hcd_omap_driver = { 493static struct device_driver ohci_hcd_omap_driver = {
506 .name = "ohci", 494 .name = "ohci",
495 .owner = THIS_MODULE,
507 .bus = &platform_bus_type, 496 .bus = &platform_bus_type,
508 .probe = ohci_hcd_omap_drv_probe, 497 .probe = ohci_hcd_omap_drv_probe,
509 .remove = ohci_hcd_omap_drv_remove, 498 .remove = ohci_hcd_omap_drv_remove,
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index eede6be098d2..bf1d5ab4aa3a 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -112,23 +112,13 @@ ohci_pci_start (struct usb_hcd *hcd)
112 112
113static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message) 113static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
114{ 114{
115 struct ohci_hcd *ohci = hcd_to_ohci (hcd); 115 /* root hub was already suspended */
116
117 /* suspend root hub, hoping it keeps power during suspend */
118 if (time_before (jiffies, ohci->next_statechange))
119 msleep (100);
120
121#ifdef CONFIG_USB_SUSPEND
122 (void) usb_suspend_device (hcd->self.root_hub, message);
123#else
124 usb_lock_device (hcd->self.root_hub);
125 (void) ohci_hub_suspend (hcd);
126 usb_unlock_device (hcd->self.root_hub);
127#endif
128 116
129 /* let things settle down a bit */ 117 /* FIXME these PMAC things get called in the wrong places. ASIC
130 msleep (100); 118 * clocks should be turned off AFTER entering D3, and on BEFORE
131 119 * trying to enter D0. Evidently the PCI layer doesn't currently
120 * provide the right sort of platform hooks for this ...
121 */
132#ifdef CONFIG_PPC_PMAC 122#ifdef CONFIG_PPC_PMAC
133 if (_machine == _MACH_Pmac) { 123 if (_machine == _MACH_Pmac) {
134 struct device_node *of_node; 124 struct device_node *of_node;
@@ -145,9 +135,6 @@ static int ohci_pci_suspend (struct usb_hcd *hcd, pm_message_t message)
145 135
146static int ohci_pci_resume (struct usb_hcd *hcd) 136static int ohci_pci_resume (struct usb_hcd *hcd)
147{ 137{
148 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
149 int retval = 0;
150
151#ifdef CONFIG_PPC_PMAC 138#ifdef CONFIG_PPC_PMAC
152 if (_machine == _MACH_Pmac) { 139 if (_machine == _MACH_Pmac) {
153 struct device_node *of_node; 140 struct device_node *of_node;
@@ -159,19 +146,8 @@ static int ohci_pci_resume (struct usb_hcd *hcd)
159 } 146 }
160#endif /* CONFIG_PPC_PMAC */ 147#endif /* CONFIG_PPC_PMAC */
161 148
162 /* resume root hub */ 149 usb_hcd_resume_root_hub(hcd);
163 if (time_before (jiffies, ohci->next_statechange)) 150 return 0;
164 msleep (100);
165#ifdef CONFIG_USB_SUSPEND
166 /* get extra cleanup even if remote wakeup isn't in use */
167 retval = usb_resume_device (hcd->self.root_hub);
168#else
169 usb_lock_device (hcd->self.root_hub);
170 retval = ohci_hub_resume (hcd);
171 usb_unlock_device (hcd->self.root_hub);
172#endif
173
174 return retval;
175} 151}
176 152
177#endif /* CONFIG_PM */ 153#endif /* CONFIG_PM */
@@ -218,9 +194,9 @@ static const struct hc_driver ohci_pci_hc_driver = {
218 */ 194 */
219 .hub_status_data = ohci_hub_status_data, 195 .hub_status_data = ohci_hub_status_data,
220 .hub_control = ohci_hub_control, 196 .hub_control = ohci_hub_control,
221#ifdef CONFIG_USB_SUSPEND 197#ifdef CONFIG_PM
222 .hub_suspend = ohci_hub_suspend, 198 .bus_suspend = ohci_bus_suspend,
223 .hub_resume = ohci_hub_resume, 199 .bus_resume = ohci_bus_resume,
224#endif 200#endif
225 .start_port_reset = ohci_start_port_reset, 201 .start_port_reset = ohci_start_port_reset,
226}; 202};
@@ -240,6 +216,7 @@ MODULE_DEVICE_TABLE (pci, pci_ids);
240static struct pci_driver ohci_pci_driver = { 216static struct pci_driver ohci_pci_driver = {
241 .name = (char *) hcd_name, 217 .name = (char *) hcd_name,
242 .id_table = pci_ids, 218 .id_table = pci_ids,
219 .owner = THIS_MODULE,
243 220
244 .probe = usb_hcd_pci_probe, 221 .probe = usb_hcd_pci_probe,
245 .remove = usb_hcd_pci_remove, 222 .remove = usb_hcd_pci_remove,
diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c
index 251533363028..4832e57ae579 100644
--- a/drivers/usb/host/ohci-ppc-soc.c
+++ b/drivers/usb/host/ohci-ppc-soc.c
@@ -163,9 +163,9 @@ static const struct hc_driver ohci_ppc_soc_hc_driver = {
163 */ 163 */
164 .hub_status_data = ohci_hub_status_data, 164 .hub_status_data = ohci_hub_status_data,
165 .hub_control = ohci_hub_control, 165 .hub_control = ohci_hub_control,
166#ifdef CONFIG_USB_SUSPEND 166#ifdef CONFIG_PM
167 .hub_suspend = ohci_hub_suspend, 167 .bus_suspend = ohci_bus_suspend,
168 .hub_resume = ohci_hub_resume, 168 .bus_resume = ohci_bus_resume,
169#endif 169#endif
170 .start_port_reset = ohci_start_port_reset, 170 .start_port_reset = ohci_start_port_reset,
171}; 171};
@@ -193,10 +193,11 @@ static int ohci_hcd_ppc_soc_drv_remove(struct device *dev)
193 193
194static struct device_driver ohci_hcd_ppc_soc_driver = { 194static struct device_driver ohci_hcd_ppc_soc_driver = {
195 .name = "ppc-soc-ohci", 195 .name = "ppc-soc-ohci",
196 .owner = THIS_MODULE,
196 .bus = &platform_bus_type, 197 .bus = &platform_bus_type,
197 .probe = ohci_hcd_ppc_soc_drv_probe, 198 .probe = ohci_hcd_ppc_soc_drv_probe,
198 .remove = ohci_hcd_ppc_soc_drv_remove, 199 .remove = ohci_hcd_ppc_soc_drv_remove,
199#if defined(CONFIG_USB_SUSPEND) || defined(CONFIG_PM) 200#ifdef CONFIG_PM
200 /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/ 201 /*.suspend = ohci_hcd_ppc_soc_drv_suspend,*/
201 /*.resume = ohci_hcd_ppc_soc_drv_resume,*/ 202 /*.resume = ohci_hcd_ppc_soc_drv_resume,*/
202#endif 203#endif
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index f042261ecb8e..d287dcccd415 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -278,10 +278,11 @@ static const struct hc_driver ohci_pxa27x_hc_driver = {
278 */ 278 */
279 .hub_status_data = ohci_hub_status_data, 279 .hub_status_data = ohci_hub_status_data,
280 .hub_control = ohci_hub_control, 280 .hub_control = ohci_hub_control,
281#ifdef CONFIG_USB_SUSPEND 281#ifdef CONFIG_PM
282 .hub_suspend = ohci_hub_suspend, 282 .bus_suspend = ohci_bus_suspend,
283 .hub_resume = ohci_hub_resume, 283 .bus_resume = ohci_bus_resume,
284#endif 284#endif
285 .start_port_reset = ohci_start_port_reset,
285}; 286};
286 287
287/*-------------------------------------------------------------------------*/ 288/*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ohci-s3c2410.c b/drivers/usb/host/ohci-s3c2410.c
index da7d5478f74d..fab420a2ce71 100644
--- a/drivers/usb/host/ohci-s3c2410.c
+++ b/drivers/usb/host/ohci-s3c2410.c
@@ -448,11 +448,11 @@ static const struct hc_driver ohci_s3c2410_hc_driver = {
448 */ 448 */
449 .hub_status_data = ohci_s3c2410_hub_status_data, 449 .hub_status_data = ohci_s3c2410_hub_status_data,
450 .hub_control = ohci_s3c2410_hub_control, 450 .hub_control = ohci_s3c2410_hub_control,
451 451#ifdef CONFIG_PM
452#if defined(CONFIG_USB_SUSPEND) && 0 452 .bus_suspend = ohci_bus_suspend,
453 .hub_suspend = ohci_hub_suspend, 453 .bus_resume = ohci_bus_resume,
454 .hub_resume = ohci_hub_resume,
455#endif 454#endif
455 .start_port_reset = ohci_start_port_reset,
456}; 456};
457 457
458/* device driver */ 458/* device driver */
@@ -474,6 +474,7 @@ static int ohci_hcd_s3c2410_drv_remove(struct device *dev)
474 474
475static struct device_driver ohci_hcd_s3c2410_driver = { 475static struct device_driver ohci_hcd_s3c2410_driver = {
476 .name = "s3c2410-ohci", 476 .name = "s3c2410-ohci",
477 .owner = THIS_MODULE,
477 .bus = &platform_bus_type, 478 .bus = &platform_bus_type,
478 .probe = ohci_hcd_s3c2410_drv_probe, 479 .probe = ohci_hcd_s3c2410_drv_probe,
479 .remove = ohci_hcd_s3c2410_drv_remove, 480 .remove = ohci_hcd_s3c2410_drv_remove,
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index 814d2be4ee7b..fb3221ebbb29 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -235,10 +235,11 @@ static const struct hc_driver ohci_sa1111_hc_driver = {
235 */ 235 */
236 .hub_status_data = ohci_hub_status_data, 236 .hub_status_data = ohci_hub_status_data,
237 .hub_control = ohci_hub_control, 237 .hub_control = ohci_hub_control,
238#ifdef CONFIG_USB_SUSPEND 238#ifdef CONFIG_PM
239 .hub_suspend = ohci_hub_suspend, 239 .bus_suspend = ohci_bus_suspend,
240 .hub_resume = ohci_hub_resume, 240 .bus_resume = ohci_bus_resume,
241#endif 241#endif
242 .start_port_reset = ohci_start_port_reset,
242}; 243};
243 244
244/*-------------------------------------------------------------------------*/ 245/*-------------------------------------------------------------------------*/
diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h
index 8a9b9d9209e9..caacf14371f5 100644
--- a/drivers/usb/host/ohci.h
+++ b/drivers/usb/host/ohci.h
@@ -389,7 +389,6 @@ struct ohci_hcd {
389 unsigned long next_statechange; /* suspend/resume */ 389 unsigned long next_statechange; /* suspend/resume */
390 u32 fminterval; /* saved register */ 390 u32 fminterval; /* saved register */
391 391
392 struct work_struct rh_resume;
393 struct notifier_block reboot_notifier; 392 struct notifier_block reboot_notifier;
394 393
395 unsigned long flags; /* for HC bugs */ 394 unsigned long flags; /* for HC bugs */
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
new file mode 100644
index 000000000000..b7fd3f644e1e
--- /dev/null
+++ b/drivers/usb/host/pci-quirks.c
@@ -0,0 +1,296 @@
1/*
2 * This file contains code to reset and initialize USB host controllers.
3 * Some of it includes work-arounds for PCI hardware and BIOS quirks.
4 * It may need to run early during booting -- before USB would normally
5 * initialize -- to ensure that Linux doesn't use any legacy modes.
6 *
7 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
8 * (and others)
9 */
10
11#include <linux/config.h>
12#ifdef CONFIG_USB_DEBUG
13#define DEBUG
14#else
15#undef DEBUG
16#endif
17
18#include <linux/types.h>
19#include <linux/kernel.h>
20#include <linux/pci.h>
21#include <linux/init.h>
22#include <linux/delay.h>
23#include <linux/acpi.h>
24
25
26#define UHCI_USBLEGSUP 0xc0 /* legacy support */
27#define UHCI_USBCMD 0 /* command register */
28#define UHCI_USBINTR 4 /* interrupt register */
29#define UHCI_USBLEGSUP_RWC 0x8f00 /* the R/WC bits */
30#define UHCI_USBLEGSUP_RO 0x5040 /* R/O and reserved bits */
31#define UHCI_USBCMD_RUN 0x0001 /* RUN/STOP bit */
32#define UHCI_USBCMD_HCRESET 0x0002 /* Host Controller reset */
33#define UHCI_USBCMD_EGSM 0x0008 /* Global Suspend Mode */
34#define UHCI_USBCMD_CONFIGURE 0x0040 /* Config Flag */
35#define UHCI_USBINTR_RESUME 0x0002 /* Resume interrupt enable */
36
37#define OHCI_CONTROL 0x04
38#define OHCI_CMDSTATUS 0x08
39#define OHCI_INTRSTATUS 0x0c
40#define OHCI_INTRENABLE 0x10
41#define OHCI_INTRDISABLE 0x14
42#define OHCI_OCR (1 << 3) /* ownership change request */
43#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
44#define OHCI_CTRL_IR (1 << 8) /* interrupt routing */
45#define OHCI_INTR_OC (1 << 30) /* ownership change */
46
47#define EHCI_HCC_PARAMS 0x08 /* extended capabilities */
48#define EHCI_USBCMD 0 /* command register */
49#define EHCI_USBCMD_RUN (1 << 0) /* RUN/STOP bit */
50#define EHCI_USBSTS 4 /* status register */
51#define EHCI_USBSTS_HALTED (1 << 12) /* HCHalted bit */
52#define EHCI_USBINTR 8 /* interrupt register */
53#define EHCI_USBLEGSUP 0 /* legacy support register */
54#define EHCI_USBLEGSUP_BIOS (1 << 16) /* BIOS semaphore */
55#define EHCI_USBLEGSUP_OS (1 << 24) /* OS semaphore */
56#define EHCI_USBLEGCTLSTS 4 /* legacy control/status */
57#define EHCI_USBLEGCTLSTS_SOOE (1 << 13) /* SMI on ownership change */
58
59
60/*
61 * Make sure the controller is completely inactive, unable to
62 * generate interrupts or do DMA.
63 */
64void uhci_reset_hc(struct pci_dev *pdev, unsigned long base)
65{
66 /* Turn off PIRQ enable and SMI enable. (This also turns off the
67 * BIOS's USB Legacy Support.) Turn off all the R/WC bits too.
68 */
69 pci_write_config_word(pdev, UHCI_USBLEGSUP, UHCI_USBLEGSUP_RWC);
70
71 /* Reset the HC - this will force us to get a
72 * new notification of any already connected
73 * ports due to the virtual disconnect that it
74 * implies.
75 */
76 outw(UHCI_USBCMD_HCRESET, base + UHCI_USBCMD);
77 mb();
78 udelay(5);
79 if (inw(base + UHCI_USBCMD) & UHCI_USBCMD_HCRESET)
80 dev_warn(&pdev->dev, "HCRESET not completed yet!\n");
81
82 /* Just to be safe, disable interrupt requests and
83 * make sure the controller is stopped.
84 */
85 outw(0, base + UHCI_USBINTR);
86 outw(0, base + UHCI_USBCMD);
87}
88EXPORT_SYMBOL_GPL(uhci_reset_hc);
89
90/*
91 * Initialize a controller that was newly discovered or has just been
92 * resumed. In either case we can't be sure of its previous state.
93 *
94 * Returns: 1 if the controller was reset, 0 otherwise.
95 */
96int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base)
97{
98 u16 legsup;
99 unsigned int cmd, intr;
100
101 /*
102 * When restarting a suspended controller, we expect all the
103 * settings to be the same as we left them:
104 *
105 * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP;
106 * Controller is stopped and configured with EGSM set;
107 * No interrupts enabled except possibly Resume Detect.
108 *
109 * If any of these conditions are violated we do a complete reset.
110 */
111 pci_read_config_word(pdev, UHCI_USBLEGSUP, &legsup);
112 if (legsup & ~(UHCI_USBLEGSUP_RO | UHCI_USBLEGSUP_RWC)) {
113 dev_dbg(&pdev->dev, "%s: legsup = 0x%04x\n",
114 __FUNCTION__, legsup);
115 goto reset_needed;
116 }
117
118 cmd = inw(base + UHCI_USBCMD);
119 if ((cmd & UHCI_USBCMD_RUN) || !(cmd & UHCI_USBCMD_CONFIGURE) ||
120 !(cmd & UHCI_USBCMD_EGSM)) {
121 dev_dbg(&pdev->dev, "%s: cmd = 0x%04x\n",
122 __FUNCTION__, cmd);
123 goto reset_needed;
124 }
125
126 intr = inw(base + UHCI_USBINTR);
127 if (intr & (~UHCI_USBINTR_RESUME)) {
128 dev_dbg(&pdev->dev, "%s: intr = 0x%04x\n",
129 __FUNCTION__, intr);
130 goto reset_needed;
131 }
132 return 0;
133
134reset_needed:
135 dev_dbg(&pdev->dev, "Performing full reset\n");
136 uhci_reset_hc(pdev, base);
137 return 1;
138}
139EXPORT_SYMBOL_GPL(uhci_check_and_reset_hc);
140
141static void __devinit quirk_usb_handoff_uhci(struct pci_dev *pdev)
142{
143 unsigned long base = 0;
144 int i;
145
146 for (i = 0; i < PCI_ROM_RESOURCE; i++)
147 if ((pci_resource_flags(pdev, i) & IORESOURCE_IO)) {
148 base = pci_resource_start(pdev, i);
149 break;
150 }
151
152 if (base)
153 uhci_check_and_reset_hc(pdev, base);
154}
155
156static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
157{
158 void __iomem *base;
159 int wait_time;
160 u32 control;
161
162 base = ioremap_nocache(pci_resource_start(pdev, 0),
163 pci_resource_len(pdev, 0));
164 if (base == NULL) return;
165
166/* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */
167#ifndef __hppa__
168 control = readl(base + OHCI_CONTROL);
169 if (control & OHCI_CTRL_IR) {
170 wait_time = 500; /* arbitrary; 5 seconds */
171 writel(OHCI_INTR_OC, base + OHCI_INTRENABLE);
172 writel(OHCI_OCR, base + OHCI_CMDSTATUS);
173 while (wait_time > 0 &&
174 readl(base + OHCI_CONTROL) & OHCI_CTRL_IR) {
175 wait_time -= 10;
176 msleep(10);
177 }
178 if (wait_time <= 0)
179 printk(KERN_WARNING "%s %s: early BIOS handoff "
180 "failed (BIOS bug ?)\n",
181 pdev->dev.bus_id, "OHCI");
182
183 /* reset controller, preserving RWC */
184 writel(control & OHCI_CTRL_RWC, base + OHCI_CONTROL);
185 }
186#endif
187
188 /*
189 * disable interrupts
190 */
191 writel(~(u32)0, base + OHCI_INTRDISABLE);
192 writel(~(u32)0, base + OHCI_INTRSTATUS);
193
194 iounmap(base);
195}
196
197static void __devinit quirk_usb_disable_ehci(struct pci_dev *pdev)
198{
199 int wait_time, delta;
200 void __iomem *base, *op_reg_base;
201 u32 hcc_params, val, temp;
202 u8 cap_length;
203
204 base = ioremap_nocache(pci_resource_start(pdev, 0),
205 pci_resource_len(pdev, 0));
206 if (base == NULL) return;
207
208 cap_length = readb(base);
209 op_reg_base = base + cap_length;
210 hcc_params = readl(base + EHCI_HCC_PARAMS);
211 hcc_params = (hcc_params >> 8) & 0xff;
212 if (hcc_params) {
213 pci_read_config_dword(pdev,
214 hcc_params + EHCI_USBLEGSUP,
215 &val);
216 if (((val & 0xff) == 1) && (val & EHCI_USBLEGSUP_BIOS)) {
217 /*
218 * Ok, BIOS is in smm mode, try to hand off...
219 */
220 pci_read_config_dword(pdev,
221 hcc_params + EHCI_USBLEGCTLSTS,
222 &temp);
223 pci_write_config_dword(pdev,
224 hcc_params + EHCI_USBLEGCTLSTS,
225 temp | EHCI_USBLEGCTLSTS_SOOE);
226 val |= EHCI_USBLEGSUP_OS;
227 pci_write_config_dword(pdev,
228 hcc_params + EHCI_USBLEGSUP,
229 val);
230
231 wait_time = 500;
232 do {
233 msleep(10);
234 wait_time -= 10;
235 pci_read_config_dword(pdev,
236 hcc_params + EHCI_USBLEGSUP,
237 &val);
238 } while (wait_time && (val & EHCI_USBLEGSUP_BIOS));
239 if (!wait_time) {
240 /*
241 * well, possibly buggy BIOS...
242 */
243 printk(KERN_WARNING "%s %s: early BIOS handoff "
244 "failed (BIOS bug ?)\n",
245 pdev->dev.bus_id, "EHCI");
246 pci_write_config_dword(pdev,
247 hcc_params + EHCI_USBLEGSUP,
248 EHCI_USBLEGSUP_OS);
249 pci_write_config_dword(pdev,
250 hcc_params + EHCI_USBLEGCTLSTS,
251 0);
252 }
253 }
254 }
255
256 /*
257 * halt EHCI & disable its interrupts in any case
258 */
259 val = readl(op_reg_base + EHCI_USBSTS);
260 if ((val & EHCI_USBSTS_HALTED) == 0) {
261 val = readl(op_reg_base + EHCI_USBCMD);
262 val &= ~EHCI_USBCMD_RUN;
263 writel(val, op_reg_base + EHCI_USBCMD);
264
265 wait_time = 2000;
266 delta = 100;
267 do {
268 writel(0x3f, op_reg_base + EHCI_USBSTS);
269 udelay(delta);
270 wait_time -= delta;
271 val = readl(op_reg_base + EHCI_USBSTS);
272 if ((val == ~(u32)0) || (val & EHCI_USBSTS_HALTED)) {
273 break;
274 }
275 } while (wait_time > 0);
276 }
277 writel(0, op_reg_base + EHCI_USBINTR);
278 writel(0x3f, op_reg_base + EHCI_USBSTS);
279
280 iounmap(base);
281
282 return;
283}
284
285
286
287static void __devinit quirk_usb_early_handoff(struct pci_dev *pdev)
288{
289 if (pdev->class == PCI_CLASS_SERIAL_USB_UHCI)
290 quirk_usb_handoff_uhci(pdev);
291 else if (pdev->class == PCI_CLASS_SERIAL_USB_OHCI)
292 quirk_usb_handoff_ohci(pdev);
293 else if (pdev->class == PCI_CLASS_SERIAL_USB_EHCI)
294 quirk_usb_disable_ehci(pdev);
295}
296DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_usb_early_handoff);
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index b5e7a478bc01..40169d9cf2b1 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -1363,7 +1363,7 @@ error:
1363#ifdef CONFIG_PM 1363#ifdef CONFIG_PM
1364 1364
1365static int 1365static int
1366sl811h_hub_suspend(struct usb_hcd *hcd) 1366sl811h_bus_suspend(struct usb_hcd *hcd)
1367{ 1367{
1368 // SOFs off 1368 // SOFs off
1369 DBG("%s\n", __FUNCTION__); 1369 DBG("%s\n", __FUNCTION__);
@@ -1371,7 +1371,7 @@ sl811h_hub_suspend(struct usb_hcd *hcd)
1371} 1371}
1372 1372
1373static int 1373static int
1374sl811h_hub_resume(struct usb_hcd *hcd) 1374sl811h_bus_resume(struct usb_hcd *hcd)
1375{ 1375{
1376 // SOFs on 1376 // SOFs on
1377 DBG("%s\n", __FUNCTION__); 1377 DBG("%s\n", __FUNCTION__);
@@ -1380,8 +1380,8 @@ sl811h_hub_resume(struct usb_hcd *hcd)
1380 1380
1381#else 1381#else
1382 1382
1383#define sl811h_hub_suspend NULL 1383#define sl811h_bus_suspend NULL
1384#define sl811h_hub_resume NULL 1384#define sl811h_bus_resume NULL
1385 1385
1386#endif 1386#endif
1387 1387
@@ -1623,8 +1623,8 @@ static struct hc_driver sl811h_hc_driver = {
1623 */ 1623 */
1624 .hub_status_data = sl811h_hub_status_data, 1624 .hub_status_data = sl811h_hub_status_data,
1625 .hub_control = sl811h_hub_control, 1625 .hub_control = sl811h_hub_control,
1626 .hub_suspend = sl811h_hub_suspend, 1626 .bus_suspend = sl811h_bus_suspend,
1627 .hub_resume = sl811h_hub_resume, 1627 .bus_resume = sl811h_bus_resume,
1628}; 1628};
1629 1629
1630/*-------------------------------------------------------------------------*/ 1630/*-------------------------------------------------------------------------*/
@@ -1791,7 +1791,7 @@ sl811h_suspend(struct device *dev, pm_message_t state)
1791 int retval = 0; 1791 int retval = 0;
1792 1792
1793 if (state.event == PM_EVENT_FREEZE) 1793 if (state.event == PM_EVENT_FREEZE)
1794 retval = sl811h_hub_suspend(hcd); 1794 retval = sl811h_bus_suspend(hcd);
1795 else if (state.event == PM_EVENT_SUSPEND) 1795 else if (state.event == PM_EVENT_SUSPEND)
1796 port_power(sl811, 0); 1796 port_power(sl811, 0);
1797 if (retval == 0) 1797 if (retval == 0)
@@ -1816,7 +1816,7 @@ sl811h_resume(struct device *dev)
1816 } 1816 }
1817 1817
1818 dev->power.power_state = PMSG_ON; 1818 dev->power.power_state = PMSG_ON;
1819 return sl811h_hub_resume(hcd); 1819 return sl811h_bus_resume(hcd);
1820} 1820}
1821 1821
1822#else 1822#else
@@ -1831,6 +1831,7 @@ sl811h_resume(struct device *dev)
1831struct device_driver sl811h_driver = { 1831struct device_driver sl811h_driver = {
1832 .name = (char *) hcd_name, 1832 .name = (char *) hcd_name,
1833 .bus = &platform_bus_type, 1833 .bus = &platform_bus_type,
1834 .owner = THIS_MODULE,
1834 1835
1835 .probe = sl811h_probe, 1836 .probe = sl811h_probe,
1836 .remove = __devexit_p(sl811h_remove), 1837 .remove = __devexit_p(sl811h_remove),
diff --git a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c
index 4538a98b6f9d..151154df37fa 100644
--- a/drivers/usb/host/uhci-debug.c
+++ b/drivers/usb/host/uhci-debug.c
@@ -348,7 +348,6 @@ static int uhci_show_urbp(struct uhci_hcd *uhci, struct urb_priv *urbp, char *bu
348 348
349 if (urbp->urb->status != -EINPROGRESS) 349 if (urbp->urb->status != -EINPROGRESS)
350 out += sprintf(out, "Status=%d ", urbp->urb->status); 350 out += sprintf(out, "Status=%d ", urbp->urb->status);
351 //out += sprintf(out, "Inserttime=%lx ",urbp->inserttime);
352 //out += sprintf(out, "FSBRtime=%lx ",urbp->fsbrtime); 351 //out += sprintf(out, "FSBRtime=%lx ",urbp->fsbrtime);
353 352
354 count = 0; 353 count = 0;
@@ -446,11 +445,11 @@ static int uhci_sprint_schedule(struct uhci_hcd *uhci, char *buf, int len)
446 out += sprintf(out, "Frame List\n"); 445 out += sprintf(out, "Frame List\n");
447 for (i = 0; i < UHCI_NUMFRAMES; ++i) { 446 for (i = 0; i < UHCI_NUMFRAMES; ++i) {
448 int shown = 0; 447 int shown = 0;
449 td = uhci->fl->frame_cpu[i]; 448 td = uhci->frame_cpu[i];
450 if (!td) 449 if (!td)
451 continue; 450 continue;
452 451
453 if (td->dma_handle != (dma_addr_t)uhci->fl->frame[i]) { 452 if (td->dma_handle != (dma_addr_t)uhci->frame[i]) {
454 show_frame_num(); 453 show_frame_num();
455 out += sprintf(out, " frame list does not match td->dma_handle!\n"); 454 out += sprintf(out, " frame list does not match td->dma_handle!\n");
456 } 455 }
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 0c024898cbea..15e0a511069b 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -101,37 +101,16 @@ static void uhci_get_current_frame_number(struct uhci_hcd *uhci);
101#include "uhci-q.c" 101#include "uhci-q.c"
102#include "uhci-hub.c" 102#include "uhci-hub.c"
103 103
104extern void uhci_reset_hc(struct pci_dev *pdev, unsigned long base);
105extern int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base);
106
104/* 107/*
105 * Make sure the controller is completely inactive, unable to 108 * Finish up a host controller reset and update the recorded state.
106 * generate interrupts or do DMA.
107 */ 109 */
108static void reset_hc(struct uhci_hcd *uhci) 110static void finish_reset(struct uhci_hcd *uhci)
109{ 111{
110 int port; 112 int port;
111 113
112 /* Turn off PIRQ enable and SMI enable. (This also turns off the
113 * BIOS's USB Legacy Support.) Turn off all the R/WC bits too.
114 */
115 pci_write_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP,
116 USBLEGSUP_RWC);
117
118 /* Reset the HC - this will force us to get a
119 * new notification of any already connected
120 * ports due to the virtual disconnect that it
121 * implies.
122 */
123 outw(USBCMD_HCRESET, uhci->io_addr + USBCMD);
124 mb();
125 udelay(5);
126 if (inw(uhci->io_addr + USBCMD) & USBCMD_HCRESET)
127 dev_warn(uhci_dev(uhci), "HCRESET not completed yet!\n");
128
129 /* Just to be safe, disable interrupt requests and
130 * make sure the controller is stopped.
131 */
132 outw(0, uhci->io_addr + USBINTR);
133 outw(0, uhci->io_addr + USBCMD);
134
135 /* HCRESET doesn't affect the Suspend, Reset, and Resume Detect 114 /* HCRESET doesn't affect the Suspend, Reset, and Resume Detect
136 * bits in the port status and control registers. 115 * bits in the port status and control registers.
137 * We have to clear them by hand. 116 * We have to clear them by hand.
@@ -153,7 +132,8 @@ static void reset_hc(struct uhci_hcd *uhci)
153 */ 132 */
154static void hc_died(struct uhci_hcd *uhci) 133static void hc_died(struct uhci_hcd *uhci)
155{ 134{
156 reset_hc(uhci); 135 uhci_reset_hc(to_pci_dev(uhci_dev(uhci)), uhci->io_addr);
136 finish_reset(uhci);
157 uhci->hc_inaccessible = 1; 137 uhci->hc_inaccessible = 1;
158} 138}
159 139
@@ -163,44 +143,8 @@ static void hc_died(struct uhci_hcd *uhci)
163 */ 143 */
164static void check_and_reset_hc(struct uhci_hcd *uhci) 144static void check_and_reset_hc(struct uhci_hcd *uhci)
165{ 145{
166 u16 legsup; 146 if (uhci_check_and_reset_hc(to_pci_dev(uhci_dev(uhci)), uhci->io_addr))
167 unsigned int cmd, intr; 147 finish_reset(uhci);
168
169 /*
170 * When restarting a suspended controller, we expect all the
171 * settings to be the same as we left them:
172 *
173 * PIRQ and SMI disabled, no R/W bits set in USBLEGSUP;
174 * Controller is stopped and configured with EGSM set;
175 * No interrupts enabled except possibly Resume Detect.
176 *
177 * If any of these conditions are violated we do a complete reset.
178 */
179 pci_read_config_word(to_pci_dev(uhci_dev(uhci)), USBLEGSUP, &legsup);
180 if (legsup & ~(USBLEGSUP_RO | USBLEGSUP_RWC)) {
181 dev_dbg(uhci_dev(uhci), "%s: legsup = 0x%04x\n",
182 __FUNCTION__, legsup);
183 goto reset_needed;
184 }
185
186 cmd = inw(uhci->io_addr + USBCMD);
187 if ((cmd & USBCMD_RS) || !(cmd & USBCMD_CF) || !(cmd & USBCMD_EGSM)) {
188 dev_dbg(uhci_dev(uhci), "%s: cmd = 0x%04x\n",
189 __FUNCTION__, cmd);
190 goto reset_needed;
191 }
192
193 intr = inw(uhci->io_addr + USBINTR);
194 if (intr & (~USBINTR_RESUME)) {
195 dev_dbg(uhci_dev(uhci), "%s: intr = 0x%04x\n",
196 __FUNCTION__, intr);
197 goto reset_needed;
198 }
199 return;
200
201reset_needed:
202 dev_dbg(uhci_dev(uhci), "Performing full reset\n");
203 reset_hc(uhci);
204} 148}
205 149
206/* 150/*
@@ -212,13 +156,13 @@ static void configure_hc(struct uhci_hcd *uhci)
212 outb(USBSOF_DEFAULT, uhci->io_addr + USBSOF); 156 outb(USBSOF_DEFAULT, uhci->io_addr + USBSOF);
213 157
214 /* Store the frame list base address */ 158 /* Store the frame list base address */
215 outl(uhci->fl->dma_handle, uhci->io_addr + USBFLBASEADD); 159 outl(uhci->frame_dma_handle, uhci->io_addr + USBFLBASEADD);
216 160
217 /* Set the current frame number */ 161 /* Set the current frame number */
218 outw(uhci->frame_number, uhci->io_addr + USBFRNUM); 162 outw(uhci->frame_number, uhci->io_addr + USBFRNUM);
219 163
220 /* Mark controller as running before we enable interrupts */ 164 /* Mark controller as not halted before we enable interrupts */
221 uhci_to_hcd(uhci)->state = HC_STATE_RUNNING; 165 uhci_to_hcd(uhci)->state = HC_STATE_SUSPENDED;
222 mb(); 166 mb();
223 167
224 /* Enable PIRQ */ 168 /* Enable PIRQ */
@@ -319,6 +263,7 @@ __acquires(uhci->lock)
319 263
320static void start_rh(struct uhci_hcd *uhci) 264static void start_rh(struct uhci_hcd *uhci)
321{ 265{
266 uhci_to_hcd(uhci)->state = HC_STATE_RUNNING;
322 uhci->is_stopped = 0; 267 uhci->is_stopped = 0;
323 smp_wmb(); 268 smp_wmb();
324 269
@@ -437,36 +382,21 @@ static void release_uhci(struct uhci_hcd *uhci)
437 int i; 382 int i;
438 383
439 for (i = 0; i < UHCI_NUM_SKELQH; i++) 384 for (i = 0; i < UHCI_NUM_SKELQH; i++)
440 if (uhci->skelqh[i]) { 385 uhci_free_qh(uhci, uhci->skelqh[i]);
441 uhci_free_qh(uhci, uhci->skelqh[i]);
442 uhci->skelqh[i] = NULL;
443 }
444 386
445 if (uhci->term_td) { 387 uhci_free_td(uhci, uhci->term_td);
446 uhci_free_td(uhci, uhci->term_td);
447 uhci->term_td = NULL;
448 }
449 388
450 if (uhci->qh_pool) { 389 dma_pool_destroy(uhci->qh_pool);
451 dma_pool_destroy(uhci->qh_pool);
452 uhci->qh_pool = NULL;
453 }
454 390
455 if (uhci->td_pool) { 391 dma_pool_destroy(uhci->td_pool);
456 dma_pool_destroy(uhci->td_pool);
457 uhci->td_pool = NULL;
458 }
459 392
460 if (uhci->fl) { 393 kfree(uhci->frame_cpu);
461 dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl),
462 uhci->fl, uhci->fl->dma_handle);
463 uhci->fl = NULL;
464 }
465 394
466 if (uhci->dentry) { 395 dma_free_coherent(uhci_dev(uhci),
467 debugfs_remove(uhci->dentry); 396 UHCI_NUMFRAMES * sizeof(*uhci->frame),
468 uhci->dentry = NULL; 397 uhci->frame, uhci->frame_dma_handle);
469 } 398
399 debugfs_remove(uhci->dentry);
470} 400}
471 401
472static int uhci_reset(struct usb_hcd *hcd) 402static int uhci_reset(struct usb_hcd *hcd)
@@ -545,7 +475,6 @@ static int uhci_start(struct usb_hcd *hcd)
545 struct uhci_hcd *uhci = hcd_to_uhci(hcd); 475 struct uhci_hcd *uhci = hcd_to_uhci(hcd);
546 int retval = -EBUSY; 476 int retval = -EBUSY;
547 int i; 477 int i;
548 dma_addr_t dma_handle;
549 struct dentry *dentry; 478 struct dentry *dentry;
550 479
551 hcd->uses_new_polling = 1; 480 hcd->uses_new_polling = 1;
@@ -579,17 +508,23 @@ static int uhci_start(struct usb_hcd *hcd)
579 508
580 init_waitqueue_head(&uhci->waitqh); 509 init_waitqueue_head(&uhci->waitqh);
581 510
582 uhci->fl = dma_alloc_coherent(uhci_dev(uhci), sizeof(*uhci->fl), 511 uhci->frame = dma_alloc_coherent(uhci_dev(uhci),
583 &dma_handle, 0); 512 UHCI_NUMFRAMES * sizeof(*uhci->frame),
584 if (!uhci->fl) { 513 &uhci->frame_dma_handle, 0);
514 if (!uhci->frame) {
585 dev_err(uhci_dev(uhci), "unable to allocate " 515 dev_err(uhci_dev(uhci), "unable to allocate "
586 "consistent memory for frame list\n"); 516 "consistent memory for frame list\n");
587 goto err_alloc_fl; 517 goto err_alloc_frame;
588 } 518 }
519 memset(uhci->frame, 0, UHCI_NUMFRAMES * sizeof(*uhci->frame));
589 520
590 memset((void *)uhci->fl, 0, sizeof(*uhci->fl)); 521 uhci->frame_cpu = kcalloc(UHCI_NUMFRAMES, sizeof(*uhci->frame_cpu),
591 522 GFP_KERNEL);
592 uhci->fl->dma_handle = dma_handle; 523 if (!uhci->frame_cpu) {
524 dev_err(uhci_dev(uhci), "unable to allocate "
525 "memory for frame pointers\n");
526 goto err_alloc_frame_cpu;
527 }
593 528
594 uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci), 529 uhci->td_pool = dma_pool_create("uhci_td", uhci_dev(uhci),
595 sizeof(struct uhci_td), 16, 0); 530 sizeof(struct uhci_td), 16, 0);
@@ -672,7 +607,7 @@ static int uhci_start(struct usb_hcd *hcd)
672 irq = 7; 607 irq = 7;
673 608
674 /* Only place we don't use the frame list routines */ 609 /* Only place we don't use the frame list routines */
675 uhci->fl->frame[i] = UHCI_PTR_QH | 610 uhci->frame[i] = UHCI_PTR_QH |
676 cpu_to_le32(uhci->skelqh[irq]->dma_handle); 611 cpu_to_le32(uhci->skelqh[irq]->dma_handle);
677 } 612 }
678 613
@@ -690,31 +625,29 @@ static int uhci_start(struct usb_hcd *hcd)
690 * error exits: 625 * error exits:
691 */ 626 */
692err_alloc_skelqh: 627err_alloc_skelqh:
693 for (i = 0; i < UHCI_NUM_SKELQH; i++) 628 for (i = 0; i < UHCI_NUM_SKELQH; i++) {
694 if (uhci->skelqh[i]) { 629 if (uhci->skelqh[i])
695 uhci_free_qh(uhci, uhci->skelqh[i]); 630 uhci_free_qh(uhci, uhci->skelqh[i]);
696 uhci->skelqh[i] = NULL; 631 }
697 }
698 632
699 uhci_free_td(uhci, uhci->term_td); 633 uhci_free_td(uhci, uhci->term_td);
700 uhci->term_td = NULL;
701 634
702err_alloc_term_td: 635err_alloc_term_td:
703 dma_pool_destroy(uhci->qh_pool); 636 dma_pool_destroy(uhci->qh_pool);
704 uhci->qh_pool = NULL;
705 637
706err_create_qh_pool: 638err_create_qh_pool:
707 dma_pool_destroy(uhci->td_pool); 639 dma_pool_destroy(uhci->td_pool);
708 uhci->td_pool = NULL;
709 640
710err_create_td_pool: 641err_create_td_pool:
711 dma_free_coherent(uhci_dev(uhci), sizeof(*uhci->fl), 642 kfree(uhci->frame_cpu);
712 uhci->fl, uhci->fl->dma_handle); 643
713 uhci->fl = NULL; 644err_alloc_frame_cpu:
645 dma_free_coherent(uhci_dev(uhci),
646 UHCI_NUMFRAMES * sizeof(*uhci->frame),
647 uhci->frame, uhci->frame_dma_handle);
714 648
715err_alloc_fl: 649err_alloc_frame:
716 debugfs_remove(uhci->dentry); 650 debugfs_remove(uhci->dentry);
717 uhci->dentry = NULL;
718 651
719err_create_debug_entry: 652err_create_debug_entry:
720 return retval; 653 return retval;
@@ -726,7 +659,7 @@ static void uhci_stop(struct usb_hcd *hcd)
726 659
727 spin_lock_irq(&uhci->lock); 660 spin_lock_irq(&uhci->lock);
728 if (!uhci->hc_inaccessible) 661 if (!uhci->hc_inaccessible)
729 reset_hc(uhci); 662 hc_died(uhci);
730 uhci_scan_schedule(uhci, NULL); 663 uhci_scan_schedule(uhci, NULL);
731 spin_unlock_irq(&uhci->lock); 664 spin_unlock_irq(&uhci->lock);
732 665
@@ -774,14 +707,8 @@ static int uhci_suspend(struct usb_hcd *hcd, pm_message_t message)
774 if (uhci->hc_inaccessible) /* Dead or already suspended */ 707 if (uhci->hc_inaccessible) /* Dead or already suspended */
775 goto done; 708 goto done;
776 709
777#ifndef CONFIG_USB_SUSPEND
778 /* Otherwise this would never happen */
779 suspend_rh(uhci, UHCI_RH_SUSPENDED);
780#endif
781
782 if (uhci->rh_state > UHCI_RH_SUSPENDED) { 710 if (uhci->rh_state > UHCI_RH_SUSPENDED) {
783 dev_warn(uhci_dev(uhci), "Root hub isn't suspended!\n"); 711 dev_warn(uhci_dev(uhci), "Root hub isn't suspended!\n");
784 hcd->state = HC_STATE_RUNNING;
785 rc = -EBUSY; 712 rc = -EBUSY;
786 goto done; 713 goto done;
787 }; 714 };
@@ -820,10 +747,6 @@ static int uhci_resume(struct usb_hcd *hcd)
820 check_and_reset_hc(uhci); 747 check_and_reset_hc(uhci);
821 configure_hc(uhci); 748 configure_hc(uhci);
822 749
823#ifndef CONFIG_USB_SUSPEND
824 /* Otherwise this would never happen */
825 wakeup_rh(uhci);
826#endif
827 if (uhci->rh_state == UHCI_RH_RESET) 750 if (uhci->rh_state == UHCI_RH_RESET)
828 suspend_rh(uhci, UHCI_RH_SUSPENDED); 751 suspend_rh(uhci, UHCI_RH_SUSPENDED);
829 752
@@ -881,8 +804,8 @@ static const struct hc_driver uhci_driver = {
881#ifdef CONFIG_PM 804#ifdef CONFIG_PM
882 .suspend = uhci_suspend, 805 .suspend = uhci_suspend,
883 .resume = uhci_resume, 806 .resume = uhci_resume,
884 .hub_suspend = uhci_rh_suspend, 807 .bus_suspend = uhci_rh_suspend,
885 .hub_resume = uhci_rh_resume, 808 .bus_resume = uhci_rh_resume,
886#endif 809#endif
887 .stop = uhci_stop, 810 .stop = uhci_stop,
888 811
@@ -908,6 +831,7 @@ MODULE_DEVICE_TABLE(pci, uhci_pci_ids);
908static struct pci_driver uhci_pci_driver = { 831static struct pci_driver uhci_pci_driver = {
909 .name = (char *)hcd_name, 832 .name = (char *)hcd_name,
910 .id_table = uhci_pci_ids, 833 .id_table = uhci_pci_ids,
834 .owner = THIS_MODULE,
911 835
912 .probe = usb_hcd_pci_probe, 836 .probe = usb_hcd_pci_probe,
913 .remove = usb_hcd_pci_remove, 837 .remove = usb_hcd_pci_remove,
diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h
index 282f40b75881..e576db57a926 100644
--- a/drivers/usb/host/uhci-hcd.h
+++ b/drivers/usb/host/uhci-hcd.h
@@ -7,6 +7,7 @@
7#define usb_packetid(pipe) (usb_pipein(pipe) ? USB_PID_IN : USB_PID_OUT) 7#define usb_packetid(pipe) (usb_pipein(pipe) ? USB_PID_IN : USB_PID_OUT)
8#define PIPE_DEVEP_MASK 0x0007ff00 8#define PIPE_DEVEP_MASK 0x0007ff00
9 9
10
10/* 11/*
11 * Universal Host Controller Interface data structures and defines 12 * Universal Host Controller Interface data structures and defines
12 */ 13 */
@@ -82,15 +83,10 @@
82#define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */ 83#define UHCI_MAX_SOF_NUMBER 2047 /* in an SOF packet */
83#define CAN_SCHEDULE_FRAMES 1000 /* how far future frames can be scheduled */ 84#define CAN_SCHEDULE_FRAMES 1000 /* how far future frames can be scheduled */
84 85
85struct uhci_frame_list {
86 __le32 frame[UHCI_NUMFRAMES];
87
88 void *frame_cpu[UHCI_NUMFRAMES];
89
90 dma_addr_t dma_handle;
91};
92 86
93struct urb_priv; 87/*
88 * Queue Headers
89 */
94 90
95/* 91/*
96 * One role of a QH is to hold a queue of TDs for some endpoint. Each QH is 92 * One role of a QH is to hold a queue of TDs for some endpoint. Each QH is
@@ -116,13 +112,13 @@ struct uhci_qh {
116 112
117 struct urb_priv *urbp; 113 struct urb_priv *urbp;
118 114
119 struct list_head list; /* P: uhci->frame_list_lock */ 115 struct list_head list;
120 struct list_head remove_list; /* P: uhci->remove_list_lock */ 116 struct list_head remove_list;
121} __attribute__((aligned(16))); 117} __attribute__((aligned(16)));
122 118
123/* 119/*
124 * We need a special accessor for the element pointer because it is 120 * We need a special accessor for the element pointer because it is
125 * subject to asynchronous updates by the controller 121 * subject to asynchronous updates by the controller.
126 */ 122 */
127static __le32 inline qh_element(struct uhci_qh *qh) { 123static __le32 inline qh_element(struct uhci_qh *qh) {
128 __le32 element = qh->element; 124 __le32 element = qh->element;
@@ -131,6 +127,11 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
131 return element; 127 return element;
132} 128}
133 129
130
131/*
132 * Transfer Descriptors
133 */
134
134/* 135/*
135 * for TD <status>: 136 * for TD <status>:
136 */ 137 */
@@ -183,17 +184,10 @@ static __le32 inline qh_element(struct uhci_qh *qh) {
183 * 184 *
184 * That's silly, the hardware doesn't care. The hardware only cares that 185 * That's silly, the hardware doesn't care. The hardware only cares that
185 * the hardware words are 16-byte aligned, and we can have any amount of 186 * the hardware words are 16-byte aligned, and we can have any amount of
186 * sw space after the TD entry as far as I can tell. 187 * sw space after the TD entry.
187 *
188 * But let's just go with the documentation, at least for 32-bit machines.
189 * On 64-bit machines we probably want to take advantage of the fact that
190 * hw doesn't really care about the size of the sw-only area.
191 *
192 * Alas, not anymore, we have more than 4 words for software, woops.
193 * Everything still works tho, surprise! -jerdfelt
194 * 188 *
195 * td->link points to either another TD (not necessarily for the same urb or 189 * td->link points to either another TD (not necessarily for the same urb or
196 * even the same endpoint), or nothing (PTR_TERM), or a QH (for queued urbs) 190 * even the same endpoint), or nothing (PTR_TERM), or a QH (for queued urbs).
197 */ 191 */
198struct uhci_td { 192struct uhci_td {
199 /* Hardware fields */ 193 /* Hardware fields */
@@ -205,18 +199,16 @@ struct uhci_td {
205 /* Software fields */ 199 /* Software fields */
206 dma_addr_t dma_handle; 200 dma_addr_t dma_handle;
207 201
208 struct urb *urb; 202 struct list_head list;
209 203 struct list_head remove_list;
210 struct list_head list; /* P: urb->lock */
211 struct list_head remove_list; /* P: uhci->td_remove_list_lock */
212 204
213 int frame; /* for iso: what frame? */ 205 int frame; /* for iso: what frame? */
214 struct list_head fl_list; /* P: uhci->frame_list_lock */ 206 struct list_head fl_list;
215} __attribute__((aligned(16))); 207} __attribute__((aligned(16)));
216 208
217/* 209/*
218 * We need a special accessor for the control/status word because it is 210 * We need a special accessor for the control/status word because it is
219 * subject to asynchronous updates by the controller 211 * subject to asynchronous updates by the controller.
220 */ 212 */
221static u32 inline td_status(struct uhci_td *td) { 213static u32 inline td_status(struct uhci_td *td) {
222 __le32 status = td->status; 214 __le32 status = td->status;
@@ -227,6 +219,10 @@ static u32 inline td_status(struct uhci_td *td) {
227 219
228 220
229/* 221/*
222 * Skeleton Queue Headers
223 */
224
225/*
230 * The UHCI driver places Interrupt, Control and Bulk into QH's both 226 * The UHCI driver places Interrupt, Control and Bulk into QH's both
231 * to group together TD's for one transfer, and also to faciliate queuing 227 * to group together TD's for one transfer, and also to faciliate queuing
232 * of URB's. To make it easy to insert entries into the schedule, we have 228 * of URB's. To make it easy to insert entries into the schedule, we have
@@ -256,15 +252,15 @@ static u32 inline td_status(struct uhci_td *td) {
256 * 252 *
257 * The terminating QH is used for 2 reasons: 253 * The terminating QH is used for 2 reasons:
258 * - To place a terminating TD which is used to workaround a PIIX bug 254 * - To place a terminating TD which is used to workaround a PIIX bug
259 * (see Intel errata for explanation) 255 * (see Intel errata for explanation), and
260 * - To loop back to the full-speed control queue for full-speed bandwidth 256 * - To loop back to the full-speed control queue for full-speed bandwidth
261 * reclamation 257 * reclamation.
262 * 258 *
263 * Isochronous transfers are stored before the start of the skeleton 259 * Isochronous transfers are stored before the start of the skeleton
264 * schedule and don't use QH's. While the UHCI spec doesn't forbid the 260 * schedule and don't use QH's. While the UHCI spec doesn't forbid the
265 * use of QH's for Isochronous, it doesn't use them either. Since we don't 261 * use of QH's for Isochronous, it doesn't use them either. And the spec
266 * need to use them either, we follow the spec diagrams in hope that it'll 262 * says that queues never advance on an error completion status, which
267 * be more compatible with future UHCI implementations. 263 * makes them totally unsuitable for Isochronous transfers.
268 */ 264 */
269 265
270#define UHCI_NUM_SKELQH 12 266#define UHCI_NUM_SKELQH 12
@@ -314,8 +310,13 @@ static inline int __interval_to_skel(int interval)
314 return 0; /* int128 for 128-255 ms (Max.) */ 310 return 0; /* int128 for 128-255 ms (Max.) */
315} 311}
316 312
313
314/*
315 * The UHCI controller and root hub
316 */
317
317/* 318/*
318 * States for the root hub. 319 * States for the root hub:
319 * 320 *
320 * To prevent "bouncing" in the presence of electrical noise, 321 * To prevent "bouncing" in the presence of electrical noise,
321 * when there are no devices attached we delay for 1 second in the 322 * when there are no devices attached we delay for 1 second in the
@@ -326,7 +327,7 @@ static inline int __interval_to_skel(int interval)
326 */ 327 */
327enum uhci_rh_state { 328enum uhci_rh_state {
328 /* In the following states the HC must be halted. 329 /* In the following states the HC must be halted.
329 * These two must come first */ 330 * These two must come first. */
330 UHCI_RH_RESET, 331 UHCI_RH_RESET,
331 UHCI_RH_SUSPENDED, 332 UHCI_RH_SUSPENDED,
332 333
@@ -338,13 +339,13 @@ enum uhci_rh_state {
338 UHCI_RH_SUSPENDING, 339 UHCI_RH_SUSPENDING,
339 340
340 /* In the following states it's an error if the HC is halted. 341 /* In the following states it's an error if the HC is halted.
341 * These two must come last */ 342 * These two must come last. */
342 UHCI_RH_RUNNING, /* The normal state */ 343 UHCI_RH_RUNNING, /* The normal state */
343 UHCI_RH_RUNNING_NODEVS, /* Running with no devices attached */ 344 UHCI_RH_RUNNING_NODEVS, /* Running with no devices attached */
344}; 345};
345 346
346/* 347/*
347 * This describes the full uhci information. 348 * The full UHCI controller information:
348 */ 349 */
349struct uhci_hcd { 350struct uhci_hcd {
350 351
@@ -361,7 +362,11 @@ struct uhci_hcd {
361 struct uhci_qh *skelqh[UHCI_NUM_SKELQH]; /* Skeleton QH's */ 362 struct uhci_qh *skelqh[UHCI_NUM_SKELQH]; /* Skeleton QH's */
362 363
363 spinlock_t lock; 364 spinlock_t lock;
364 struct uhci_frame_list *fl; /* P: uhci->lock */ 365
366 dma_addr_t frame_dma_handle; /* Hardware frame list */
367 __le32 *frame;
368 void **frame_cpu; /* CPU's frame list */
369
365 int fsbr; /* Full-speed bandwidth reclamation */ 370 int fsbr; /* Full-speed bandwidth reclamation */
366 unsigned long fsbrtimeout; /* FSBR delay */ 371 unsigned long fsbrtimeout; /* FSBR delay */
367 372
@@ -385,22 +390,22 @@ struct uhci_hcd {
385 unsigned long ports_timeout; /* Time to stop signalling */ 390 unsigned long ports_timeout; /* Time to stop signalling */
386 391
387 /* Main list of URB's currently controlled by this HC */ 392 /* Main list of URB's currently controlled by this HC */
388 struct list_head urb_list; /* P: uhci->lock */ 393 struct list_head urb_list;
389 394
390 /* List of QH's that are done, but waiting to be unlinked (race) */ 395 /* List of QH's that are done, but waiting to be unlinked (race) */
391 struct list_head qh_remove_list; /* P: uhci->lock */ 396 struct list_head qh_remove_list;
392 unsigned int qh_remove_age; /* Age in frames */ 397 unsigned int qh_remove_age; /* Age in frames */
393 398
394 /* List of TD's that are done, but waiting to be freed (race) */ 399 /* List of TD's that are done, but waiting to be freed (race) */
395 struct list_head td_remove_list; /* P: uhci->lock */ 400 struct list_head td_remove_list;
396 unsigned int td_remove_age; /* Age in frames */ 401 unsigned int td_remove_age; /* Age in frames */
397 402
398 /* List of asynchronously unlinked URB's */ 403 /* List of asynchronously unlinked URB's */
399 struct list_head urb_remove_list; /* P: uhci->lock */ 404 struct list_head urb_remove_list;
400 unsigned int urb_remove_age; /* Age in frames */ 405 unsigned int urb_remove_age; /* Age in frames */
401 406
402 /* List of URB's awaiting completion callback */ 407 /* List of URB's awaiting completion callback */
403 struct list_head complete_list; /* P: uhci->lock */ 408 struct list_head complete_list;
404 409
405 int rh_numports; /* Number of root-hub ports */ 410 int rh_numports; /* Number of root-hub ports */
406 411
@@ -419,13 +424,17 @@ static inline struct usb_hcd *uhci_to_hcd(struct uhci_hcd *uhci)
419 424
420#define uhci_dev(u) (uhci_to_hcd(u)->self.controller) 425#define uhci_dev(u) (uhci_to_hcd(u)->self.controller)
421 426
427
428/*
429 * Private per-URB data
430 */
422struct urb_priv { 431struct urb_priv {
423 struct list_head urb_list; 432 struct list_head urb_list;
424 433
425 struct urb *urb; 434 struct urb *urb;
426 435
427 struct uhci_qh *qh; /* QH for this URB */ 436 struct uhci_qh *qh; /* QH for this URB */
428 struct list_head td_list; /* P: urb->lock */ 437 struct list_head td_list;
429 438
430 unsigned fsbr : 1; /* URB turned on FSBR */ 439 unsigned fsbr : 1; /* URB turned on FSBR */
431 unsigned fsbr_timeout : 1; /* URB timed out on FSBR */ 440 unsigned fsbr_timeout : 1; /* URB timed out on FSBR */
@@ -434,12 +443,12 @@ struct urb_priv {
434 /* a control transfer, retrigger */ 443 /* a control transfer, retrigger */
435 /* the status phase */ 444 /* the status phase */
436 445
437 unsigned long inserttime; /* In jiffies */
438 unsigned long fsbrtime; /* In jiffies */ 446 unsigned long fsbrtime; /* In jiffies */
439 447
440 struct list_head queue_list; /* P: uhci->frame_list_lock */ 448 struct list_head queue_list;
441}; 449};
442 450
451
443/* 452/*
444 * Locking in uhci.c 453 * Locking in uhci.c
445 * 454 *
@@ -459,6 +468,5 @@ struct urb_priv {
459 468
460#define PCI_VENDOR_ID_GENESYS 0x17a0 469#define PCI_VENDOR_ID_GENESYS 0x17a0
461#define PCI_DEVICE_ID_GL880S_UHCI 0x8083 470#define PCI_DEVICE_ID_GL880S_UHCI 0x8083
462#define PCI_DEVICE_ID_GL880S_EHCI 0x8084
463 471
464#endif 472#endif
diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c
index 4e0fbe2c1a9a..7e46887d9e12 100644
--- a/drivers/usb/host/uhci-q.c
+++ b/drivers/usb/host/uhci-q.c
@@ -89,10 +89,10 @@ static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td,
89 td->frame = framenum; 89 td->frame = framenum;
90 90
91 /* Is there a TD already mapped there? */ 91 /* Is there a TD already mapped there? */
92 if (uhci->fl->frame_cpu[framenum]) { 92 if (uhci->frame_cpu[framenum]) {
93 struct uhci_td *ftd, *ltd; 93 struct uhci_td *ftd, *ltd;
94 94
95 ftd = uhci->fl->frame_cpu[framenum]; 95 ftd = uhci->frame_cpu[framenum];
96 ltd = list_entry(ftd->fl_list.prev, struct uhci_td, fl_list); 96 ltd = list_entry(ftd->fl_list.prev, struct uhci_td, fl_list);
97 97
98 list_add_tail(&td->fl_list, &ftd->fl_list); 98 list_add_tail(&td->fl_list, &ftd->fl_list);
@@ -101,29 +101,32 @@ static void uhci_insert_td_frame_list(struct uhci_hcd *uhci, struct uhci_td *td,
101 wmb(); 101 wmb();
102 ltd->link = cpu_to_le32(td->dma_handle); 102 ltd->link = cpu_to_le32(td->dma_handle);
103 } else { 103 } else {
104 td->link = uhci->fl->frame[framenum]; 104 td->link = uhci->frame[framenum];
105 wmb(); 105 wmb();
106 uhci->fl->frame[framenum] = cpu_to_le32(td->dma_handle); 106 uhci->frame[framenum] = cpu_to_le32(td->dma_handle);
107 uhci->fl->frame_cpu[framenum] = td; 107 uhci->frame_cpu[framenum] = td;
108 } 108 }
109} 109}
110 110
111static void uhci_remove_td(struct uhci_hcd *uhci, struct uhci_td *td) 111static inline void uhci_remove_td_frame_list(struct uhci_hcd *uhci,
112 struct uhci_td *td)
112{ 113{
113 /* If it's not inserted, don't remove it */ 114 /* If it's not inserted, don't remove it */
114 if (td->frame == -1 && list_empty(&td->fl_list)) 115 if (td->frame == -1) {
116 WARN_ON(!list_empty(&td->fl_list));
115 return; 117 return;
118 }
116 119
117 if (td->frame != -1 && uhci->fl->frame_cpu[td->frame] == td) { 120 if (uhci->frame_cpu[td->frame] == td) {
118 if (list_empty(&td->fl_list)) { 121 if (list_empty(&td->fl_list)) {
119 uhci->fl->frame[td->frame] = td->link; 122 uhci->frame[td->frame] = td->link;
120 uhci->fl->frame_cpu[td->frame] = NULL; 123 uhci->frame_cpu[td->frame] = NULL;
121 } else { 124 } else {
122 struct uhci_td *ntd; 125 struct uhci_td *ntd;
123 126
124 ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list); 127 ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list);
125 uhci->fl->frame[td->frame] = cpu_to_le32(ntd->dma_handle); 128 uhci->frame[td->frame] = cpu_to_le32(ntd->dma_handle);
126 uhci->fl->frame_cpu[td->frame] = ntd; 129 uhci->frame_cpu[td->frame] = ntd;
127 } 130 }
128 } else { 131 } else {
129 struct uhci_td *ptd; 132 struct uhci_td *ptd;
@@ -132,13 +135,20 @@ static void uhci_remove_td(struct uhci_hcd *uhci, struct uhci_td *td)
132 ptd->link = td->link; 135 ptd->link = td->link;
133 } 136 }
134 137
135 wmb();
136 td->link = UHCI_PTR_TERM;
137
138 list_del_init(&td->fl_list); 138 list_del_init(&td->fl_list);
139 td->frame = -1; 139 td->frame = -1;
140} 140}
141 141
142static void unlink_isochronous_tds(struct uhci_hcd *uhci, struct urb *urb)
143{
144 struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
145 struct uhci_td *td;
146
147 list_for_each_entry(td, &urbp->td_list, list)
148 uhci_remove_td_frame_list(uhci, td);
149 wmb();
150}
151
142/* 152/*
143 * Inserts a td list into qh. 153 * Inserts a td list into qh.
144 */ 154 */
@@ -443,7 +453,6 @@ static struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci, struct urb *u
443 453
444 memset((void *)urbp, 0, sizeof(*urbp)); 454 memset((void *)urbp, 0, sizeof(*urbp));
445 455
446 urbp->inserttime = jiffies;
447 urbp->fsbrtime = jiffies; 456 urbp->fsbrtime = jiffies;
448 urbp->urb = urb; 457 urbp->urb = urb;
449 458
@@ -462,8 +471,6 @@ static void uhci_add_td_to_urb(struct urb *urb, struct uhci_td *td)
462{ 471{
463 struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv; 472 struct urb_priv *urbp = (struct urb_priv *)urb->hcpriv;
464 473
465 td->urb = urb;
466
467 list_add_tail(&td->list, &urbp->td_list); 474 list_add_tail(&td->list, &urbp->td_list);
468} 475}
469 476
@@ -473,8 +480,6 @@ static void uhci_remove_td_from_urb(struct uhci_td *td)
473 return; 480 return;
474 481
475 list_del_init(&td->list); 482 list_del_init(&td->list);
476
477 td->urb = NULL;
478} 483}
479 484
480static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb) 485static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
@@ -503,7 +508,6 @@ static void uhci_destroy_urb_priv(struct uhci_hcd *uhci, struct urb *urb)
503 508
504 list_for_each_entry_safe(td, tmp, &urbp->td_list, list) { 509 list_for_each_entry_safe(td, tmp, &urbp->td_list, list) {
505 uhci_remove_td_from_urb(td); 510 uhci_remove_td_from_urb(td);
506 uhci_remove_td(uhci, td);
507 list_add(&td->remove_list, &uhci->td_remove_list); 511 list_add(&td->remove_list, &uhci->td_remove_list);
508 } 512 }
509 513
@@ -1073,6 +1077,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
1073 struct uhci_td *td; 1077 struct uhci_td *td;
1074 int i, ret, frame; 1078 int i, ret, frame;
1075 int status, destination; 1079 int status, destination;
1080 struct urb_priv *urbp = (struct urb_priv *) urb->hcpriv;
1076 1081
1077 status = TD_CTRL_ACTIVE | TD_CTRL_IOS; 1082 status = TD_CTRL_ACTIVE | TD_CTRL_IOS;
1078 destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe); 1083 destination = (urb->pipe & PIPE_DEVEP_MASK) | usb_packetid(urb->pipe);
@@ -1081,11 +1086,7 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
1081 if (ret) 1086 if (ret)
1082 return ret; 1087 return ret;
1083 1088
1084 frame = urb->start_frame; 1089 for (i = 0; i < urb->number_of_packets; i++) {
1085 for (i = 0; i < urb->number_of_packets; i++, frame += urb->interval) {
1086 if (!urb->iso_frame_desc[i].length)
1087 continue;
1088
1089 td = uhci_alloc_td(uhci); 1090 td = uhci_alloc_td(uhci);
1090 if (!td) 1091 if (!td)
1091 return -ENOMEM; 1092 return -ENOMEM;
@@ -1096,8 +1097,12 @@ static int uhci_submit_isochronous(struct uhci_hcd *uhci, struct urb *urb)
1096 1097
1097 if (i + 1 >= urb->number_of_packets) 1098 if (i + 1 >= urb->number_of_packets)
1098 td->status |= cpu_to_le32(TD_CTRL_IOC); 1099 td->status |= cpu_to_le32(TD_CTRL_IOC);
1100 }
1099 1101
1102 frame = urb->start_frame;
1103 list_for_each_entry(td, &urbp->td_list, list) {
1100 uhci_insert_td_frame_list(uhci, td, frame); 1104 uhci_insert_td_frame_list(uhci, td, frame);
1105 frame += urb->interval;
1101 } 1106 }
1102 1107
1103 return -EINPROGRESS; 1108 return -EINPROGRESS;
@@ -1110,7 +1115,7 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
1110 int status; 1115 int status;
1111 int i, ret = 0; 1116 int i, ret = 0;
1112 1117
1113 urb->actual_length = 0; 1118 urb->actual_length = urb->error_count = 0;
1114 1119
1115 i = 0; 1120 i = 0;
1116 list_for_each_entry(td, &urbp->td_list, list) { 1121 list_for_each_entry(td, &urbp->td_list, list) {
@@ -1134,6 +1139,7 @@ static int uhci_result_isochronous(struct uhci_hcd *uhci, struct urb *urb)
1134 1139
1135 i++; 1140 i++;
1136 } 1141 }
1142 unlink_isochronous_tds(uhci, urb);
1137 1143
1138 return ret; 1144 return ret;
1139} 1145}
@@ -1366,6 +1372,8 @@ static int uhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
1366 goto done; 1372 goto done;
1367 list_del_init(&urbp->urb_list); 1373 list_del_init(&urbp->urb_list);
1368 1374
1375 if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS)
1376 unlink_isochronous_tds(uhci, urb);
1369 uhci_unlink_generic(uhci, urb); 1377 uhci_unlink_generic(uhci, urb);
1370 1378
1371 uhci_get_current_frame_number(uhci); 1379 uhci_get_current_frame_number(uhci);
generated by cgit v1.2.2 (git 2.25.0) at 2025-11-03 15:34:09 -0500