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21#include <linux/module.h>
22#include <linux/moduleparam.h>
23#include <linux/pci.h>
24#include <linux/kernel.h>
25#include <linux/delay.h>
26#include <linux/ioport.h>
27#include <linux/sched.h>
28#include <linux/slab.h>
29#include <linux/errno.h>
30#include <linux/init.h>
31#include <linux/timer.h>
32#include <linux/list.h>
33#include <linux/usb.h>
34#include <linux/usb/otg.h>
35#include <linux/dma-mapping.h>
36#include <linux/dmapool.h>
37#include <linux/reboot.h>
38#include <linux/workqueue.h>
39#include <linux/debugfs.h>
40
41#include <asm/io.h>
42#include <asm/irq.h>
43#include <asm/system.h>
44#include <asm/unaligned.h>
45#include <asm/byteorder.h>
46
47#include "../core/hcd.h"
48
49#define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell"
50#define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver"
51
52
53
54#undef OHCI_VERBOSE_DEBUG
55
56
57#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
58#define OHCI_INTR_INIT \
59 (OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE \
60 | OHCI_INTR_RD | OHCI_INTR_WDH)
61
62#ifdef __hppa__
63
64#define IR_DISABLE
65#endif
66
67#ifdef CONFIG_ARCH_OMAP
68
69#define IR_DISABLE
70#endif
71
72
73
74static const char hcd_name [] = "ohci_hcd";
75
76#define STATECHANGE_DELAY msecs_to_jiffies(300)
77
78#include "ohci.h"
79
80static void ohci_dump (struct ohci_hcd *ohci, int verbose);
81static int ohci_init (struct ohci_hcd *ohci);
82static void ohci_stop (struct usb_hcd *hcd);
83
84#if defined(CONFIG_PM) || defined(CONFIG_PCI)
85static int ohci_restart (struct ohci_hcd *ohci);
86#endif
87
88#ifdef CONFIG_PCI
89static void quirk_amd_pll(int state);
90static void amd_iso_dev_put(void);
91#else
92static inline void quirk_amd_pll(int state)
93{
94 return;
95}
96static inline void amd_iso_dev_put(void)
97{
98 return;
99}
100#endif
101
102
103#include "ohci-hub.c"
104#include "ohci-dbg.c"
105#include "ohci-mem.c"
106#include "ohci-q.c"
107
108
109
110
111
112
113#if defined(CONFIG_SA1111)
114#define IRQ_NOTMINE IRQ_HANDLED
115#else
116#define IRQ_NOTMINE IRQ_NONE
117#endif
118
119
120
121static int distrust_firmware = 1;
122module_param (distrust_firmware, bool, 0);
123MODULE_PARM_DESC (distrust_firmware,
124 "true to distrust firmware power/overcurrent setup");
125
126
127static int no_handshake = 0;
128module_param (no_handshake, bool, 0);
129MODULE_PARM_DESC (no_handshake, "true (not default) disables BIOS handshake");
130
131
132
133
134
135
136static int ohci_urb_enqueue (
137 struct usb_hcd *hcd,
138 struct urb *urb,
139 gfp_t mem_flags
140) {
141 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
142 struct ed *ed;
143 urb_priv_t *urb_priv;
144 unsigned int pipe = urb->pipe;
145 int i, size = 0;
146 unsigned long flags;
147 int retval = 0;
148
149#ifdef OHCI_VERBOSE_DEBUG
150 urb_print(urb, "SUB", usb_pipein(pipe), -EINPROGRESS);
151#endif
152
153
154 if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
155 return -ENOMEM;
156
157
158 switch (ed->type) {
159 case PIPE_CONTROL:
160
161 if (urb->transfer_buffer_length > 4096)
162 return -EMSGSIZE;
163
164
165 size = 2;
166
167
168
169 default:
170
171 size += urb->transfer_buffer_length / 4096;
172
173 if ((urb->transfer_buffer_length % 4096) != 0)
174 size++;
175
176 if (size == 0)
177 size++;
178 else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
179 && (urb->transfer_buffer_length
180 % usb_maxpacket (urb->dev, pipe,
181 usb_pipeout (pipe))) == 0)
182 size++;
183 break;
184 case PIPE_ISOCHRONOUS:
185 size = urb->number_of_packets;
186 break;
187 }
188
189
190 urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
191 mem_flags);
192 if (!urb_priv)
193 return -ENOMEM;
194 INIT_LIST_HEAD (&urb_priv->pending);
195 urb_priv->length = size;
196 urb_priv->ed = ed;
197
198
199 for (i = 0; i < size; i++) {
200 urb_priv->td [i] = td_alloc (ohci, mem_flags);
201 if (!urb_priv->td [i]) {
202 urb_priv->length = i;
203 urb_free_priv (ohci, urb_priv);
204 return -ENOMEM;
205 }
206 }
207
208 spin_lock_irqsave (&ohci->lock, flags);
209
210
211 if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
212 retval = -ENODEV;
213 goto fail;
214 }
215 if (!HC_IS_RUNNING(hcd->state)) {
216 retval = -ENODEV;
217 goto fail;
218 }
219 retval = usb_hcd_link_urb_to_ep(hcd, urb);
220 if (retval)
221 goto fail;
222
223
224 if (ed->state == ED_IDLE) {
225 retval = ed_schedule (ohci, ed);
226 if (retval < 0) {
227 usb_hcd_unlink_urb_from_ep(hcd, urb);
228 goto fail;
229 }
230 if (ed->type == PIPE_ISOCHRONOUS) {
231 u16 frame = ohci_frame_no(ohci);
232
233
234 frame += max_t (u16, 8, ed->interval);
235 frame &= ~(ed->interval - 1);
236 frame |= ed->branch;
237 urb->start_frame = frame;
238
239
240
241
242 }
243 } else if (ed->type == PIPE_ISOCHRONOUS)
244 urb->start_frame = ed->last_iso + ed->interval;
245
246
247
248
249
250 urb->hcpriv = urb_priv;
251 td_submit_urb (ohci, urb);
252
253fail:
254 if (retval)
255 urb_free_priv (ohci, urb_priv);
256 spin_unlock_irqrestore (&ohci->lock, flags);
257 return retval;
258}
259
260
261
262
263
264
265
266static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
267{
268 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
269 unsigned long flags;
270 int rc;
271
272#ifdef OHCI_VERBOSE_DEBUG
273 urb_print(urb, "UNLINK", 1, status);
274#endif
275
276 spin_lock_irqsave (&ohci->lock, flags);
277 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
278 if (rc) {
279 ;
280 } else if (HC_IS_RUNNING(hcd->state)) {
281 urb_priv_t *urb_priv;
282
283
284
285
286
287 urb_priv = urb->hcpriv;
288 if (urb_priv) {
289 if (urb_priv->ed->state == ED_OPER)
290 start_ed_unlink (ohci, urb_priv->ed);
291 }
292 } else {
293
294
295
296
297 if (urb->hcpriv)
298 finish_urb(ohci, urb, status);
299 }
300 spin_unlock_irqrestore (&ohci->lock, flags);
301 return rc;
302}
303
304
305
306
307
308
309
310static void
311ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
312{
313 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
314 unsigned long flags;
315 struct ed *ed = ep->hcpriv;
316 unsigned limit = 1000;
317
318
319
320
321 if (!ed)
322 return;
323
324rescan:
325 spin_lock_irqsave (&ohci->lock, flags);
326
327 if (!HC_IS_RUNNING (hcd->state)) {
328sanitize:
329 ed->state = ED_IDLE;
330 if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
331 ohci->eds_scheduled--;
332 finish_unlinks (ohci, 0);
333 }
334
335 switch (ed->state) {
336 case ED_UNLINK:
337
338 if (limit-- == 0) {
339 ohci_warn(ohci, "ED unlink timeout\n");
340 if (quirk_zfmicro(ohci)) {
341 ohci_warn(ohci, "Attempting ZF TD recovery\n");
342 ohci->ed_to_check = ed;
343 ohci->zf_delay = 2;
344 }
345 goto sanitize;
346 }
347 spin_unlock_irqrestore (&ohci->lock, flags);
348 schedule_timeout_uninterruptible(1);
349 goto rescan;
350 case ED_IDLE:
351 if (list_empty (&ed->td_list)) {
352 td_free (ohci, ed->dummy);
353 ed_free (ohci, ed);
354 break;
355 }
356
357 default:
358
359
360
361 ohci_err (ohci, "leak ed %p (#%02x) state %d%s\n",
362 ed, ep->desc.bEndpointAddress, ed->state,
363 list_empty (&ed->td_list) ? "" : " (has tds)");
364 td_free (ohci, ed->dummy);
365 break;
366 }
367 ep->hcpriv = NULL;
368 spin_unlock_irqrestore (&ohci->lock, flags);
369 return;
370}
371
372static int ohci_get_frame (struct usb_hcd *hcd)
373{
374 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
375
376 return ohci_frame_no(ohci);
377}
378
379static void ohci_usb_reset (struct ohci_hcd *ohci)
380{
381 ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
382 ohci->hc_control &= OHCI_CTRL_RWC;
383 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
384}
385
386
387
388
389
390static void
391ohci_shutdown (struct usb_hcd *hcd)
392{
393 struct ohci_hcd *ohci;
394
395 ohci = hcd_to_ohci (hcd);
396 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
397 ohci_usb_reset (ohci);
398
399 (void) ohci_readl (ohci, &ohci->regs->control);
400}
401
402static int check_ed(struct ohci_hcd *ohci, struct ed *ed)
403{
404 return (hc32_to_cpu(ohci, ed->hwINFO) & ED_IN) != 0
405 && (hc32_to_cpu(ohci, ed->hwHeadP) & TD_MASK)
406 == (hc32_to_cpu(ohci, ed->hwTailP) & TD_MASK)
407 && !list_empty(&ed->td_list);
408}
409
410
411
412
413
414
415static void unlink_watchdog_func(unsigned long _ohci)
416{
417 unsigned long flags;
418 unsigned max;
419 unsigned seen_count = 0;
420 unsigned i;
421 struct ed **seen = NULL;
422 struct ohci_hcd *ohci = (struct ohci_hcd *) _ohci;
423
424 spin_lock_irqsave(&ohci->lock, flags);
425 max = ohci->eds_scheduled;
426 if (!max)
427 goto done;
428
429 if (ohci->ed_to_check)
430 goto out;
431
432 seen = kcalloc(max, sizeof *seen, GFP_ATOMIC);
433 if (!seen)
434 goto out;
435
436 for (i = 0; i < NUM_INTS; i++) {
437 struct ed *ed = ohci->periodic[i];
438
439 while (ed) {
440 unsigned temp;
441
442
443 for (temp = 0; temp < seen_count; temp++) {
444 if (seen[temp] == ed) {
445
446 ed = NULL;
447 break;
448 }
449 }
450 if (!ed)
451 break;
452 seen[seen_count++] = ed;
453 if (!check_ed(ohci, ed)) {
454 ed = ed->ed_next;
455 continue;
456 }
457
458
459
460
461 ohci->ed_to_check = ed;
462 ohci->zf_delay = 2;
463
464
465
466
467
468
469
470 ohci_writel(ohci, OHCI_INTR_SF,
471 &ohci->regs->intrstatus);
472 ohci_writel(ohci, OHCI_INTR_SF,
473 &ohci->regs->intrenable);
474
475
476 (void) ohci_readl(ohci, &ohci->regs->control);
477
478 goto out;
479 }
480 }
481out:
482 kfree(seen);
483 if (ohci->eds_scheduled)
484 mod_timer(&ohci->unlink_watchdog, round_jiffies(jiffies + HZ));
485done:
486 spin_unlock_irqrestore(&ohci->lock, flags);
487}
488
489
490
491
492
493
494
495static int ohci_init (struct ohci_hcd *ohci)
496{
497 int ret;
498 struct usb_hcd *hcd = ohci_to_hcd(ohci);
499
500 if (distrust_firmware)
501 ohci->flags |= OHCI_QUIRK_HUB_POWER;
502
503 disable (ohci);
504 ohci->regs = hcd->regs;
505
506
507
508
509
510#ifndef IR_DISABLE
511
512 if (!no_handshake && ohci_readl (ohci,
513 &ohci->regs->control) & OHCI_CTRL_IR) {
514 u32 temp;
515
516 ohci_dbg (ohci, "USB HC TakeOver from BIOS/SMM\n");
517
518
519
520
521
522 temp = 500;
523
524 ohci_writel (ohci, OHCI_INTR_OC, &ohci->regs->intrenable);
525 ohci_writel (ohci, OHCI_OCR, &ohci->regs->cmdstatus);
526 while (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_IR) {
527 msleep (10);
528 if (--temp == 0) {
529 ohci_err (ohci, "USB HC takeover failed!"
530 " (BIOS/SMM bug)\n");
531 return -EBUSY;
532 }
533 }
534 ohci_usb_reset (ohci);
535 }
536#endif
537
538
539 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
540
541
542 if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
543 ohci->hc_control |= OHCI_CTRL_RWC;
544
545
546 if (ohci->num_ports == 0)
547 ohci->num_ports = roothub_a(ohci) & RH_A_NDP;
548
549 if (ohci->hcca)
550 return 0;
551
552 ohci->hcca = dma_alloc_coherent (hcd->self.controller,
553 sizeof *ohci->hcca, &ohci->hcca_dma, 0);
554 if (!ohci->hcca)
555 return -ENOMEM;
556
557 if ((ret = ohci_mem_init (ohci)) < 0)
558 ohci_stop (hcd);
559 else {
560 create_debug_files (ohci);
561 }
562
563 return ret;
564}
565
566
567
568
569
570
571
572static int ohci_run (struct ohci_hcd *ohci)
573{
574 u32 mask, temp;
575 int first = ohci->fminterval == 0;
576 struct usb_hcd *hcd = ohci_to_hcd(ohci);
577
578 disable (ohci);
579
580
581 if (first) {
582
583 temp = ohci_readl (ohci, &ohci->regs->fminterval);
584 ohci->fminterval = temp & 0x3fff;
585 if (ohci->fminterval != FI)
586 ohci_dbg (ohci, "fminterval delta %d\n",
587 ohci->fminterval - FI);
588 ohci->fminterval |= FSMP (ohci->fminterval) << 16;
589
590 }
591
592
593
594
595
596
597 if ((ohci->hc_control & OHCI_CTRL_RWC) != 0
598 && !device_may_wakeup(hcd->self.controller))
599 device_init_wakeup(hcd->self.controller, 1);
600
601 switch (ohci->hc_control & OHCI_CTRL_HCFS) {
602 case OHCI_USB_OPER:
603 temp = 0;
604 break;
605 case OHCI_USB_SUSPEND:
606 case OHCI_USB_RESUME:
607 ohci->hc_control &= OHCI_CTRL_RWC;
608 ohci->hc_control |= OHCI_USB_RESUME;
609 temp = 10 ;
610 break;
611
612 default:
613 ohci->hc_control &= OHCI_CTRL_RWC;
614 ohci->hc_control |= OHCI_USB_RESET;
615 temp = 50 ;
616 break;
617 }
618 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
619
620 (void) ohci_readl (ohci, &ohci->regs->control);
621 msleep(temp);
622
623 memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
624
625
626 spin_lock_irq (&ohci->lock);
627
628retry:
629
630 ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus);
631 temp = 30;
632 while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
633 if (--temp == 0) {
634 spin_unlock_irq (&ohci->lock);
635 ohci_err (ohci, "USB HC reset timed out!\n");
636 return -1;
637 }
638 udelay (1);
639 }
640
641
642
643
644
645
646
647
648
649
650 if (ohci->flags & OHCI_QUIRK_INITRESET) {
651 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
652
653 (void) ohci_readl (ohci, &ohci->regs->control);
654 }
655
656
657
658 ohci_writel (ohci, 0, &ohci->regs->ed_controlhead);
659 ohci_writel (ohci, 0, &ohci->regs->ed_bulkhead);
660
661
662 ohci_writel (ohci, (u32) ohci->hcca_dma, &ohci->regs->hcca);
663
664 periodic_reinit (ohci);
665
666
667
668
669 if ((ohci_readl (ohci, &ohci->regs->fminterval) & 0x3fff0000) == 0
670 || !ohci_readl (ohci, &ohci->regs->periodicstart)) {
671 if (!(ohci->flags & OHCI_QUIRK_INITRESET)) {
672 ohci->flags |= OHCI_QUIRK_INITRESET;
673 ohci_dbg (ohci, "enabling initreset quirk\n");
674 goto retry;
675 }
676 spin_unlock_irq (&ohci->lock);
677 ohci_err (ohci, "init err (%08x %04x)\n",
678 ohci_readl (ohci, &ohci->regs->fminterval),
679 ohci_readl (ohci, &ohci->regs->periodicstart));
680 return -EOVERFLOW;
681 }
682
683
684 hcd->poll_rh = 1;
685 hcd->uses_new_polling = 1;
686
687
688 ohci->hc_control &= OHCI_CTRL_RWC;
689 ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
690 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
691 hcd->state = HC_STATE_RUNNING;
692
693
694 ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
695
696
697 mask = OHCI_INTR_INIT;
698 ohci_writel (ohci, ~0, &ohci->regs->intrstatus);
699 ohci_writel (ohci, mask, &ohci->regs->intrenable);
700
701
702 temp = roothub_a (ohci);
703 temp &= ~(RH_A_PSM | RH_A_OCPM);
704 if (ohci->flags & OHCI_QUIRK_SUPERIO) {
705
706 temp |= RH_A_NOCP;
707 temp &= ~(RH_A_POTPGT | RH_A_NPS);
708 ohci_writel (ohci, temp, &ohci->regs->roothub.a);
709 } else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
710 (ohci->flags & OHCI_QUIRK_HUB_POWER)) {
711
712
713
714 temp |= RH_A_NPS;
715 ohci_writel (ohci, temp, &ohci->regs->roothub.a);
716 }
717 ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status);
718 ohci_writel (ohci, (temp & RH_A_NPS) ? 0 : RH_B_PPCM,
719 &ohci->regs->roothub.b);
720
721 (void) ohci_readl (ohci, &ohci->regs->control);
722
723 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
724 spin_unlock_irq (&ohci->lock);
725
726
727 mdelay ((temp >> 23) & 0x1fe);
728 hcd->state = HC_STATE_RUNNING;
729
730 if (quirk_zfmicro(ohci)) {
731
732 setup_timer(&ohci->unlink_watchdog, unlink_watchdog_func,
733 (unsigned long) ohci);
734
735 ohci->eds_scheduled = 0;
736 ohci->ed_to_check = NULL;
737 }
738
739 ohci_dump (ohci, 1);
740
741 return 0;
742}
743
744
745
746
747
748static irqreturn_t ohci_irq (struct usb_hcd *hcd)
749{
750 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
751 struct ohci_regs __iomem *regs = ohci->regs;
752 int ints;
753
754
755
756
757
758 ints = ohci_readl(ohci, ®s->intrstatus);
759
760
761
762
763 if (ints == ~(u32)0) {
764 disable (ohci);
765 ohci_dbg (ohci, "device removed!\n");
766 return IRQ_HANDLED;
767 }
768
769
770 ints &= ohci_readl(ohci, ®s->intrenable);
771
772
773 if (ints == 0)
774 return IRQ_NOTMINE;
775
776 if (ints & OHCI_INTR_UE) {
777
778 if (quirk_nec(ohci)) {
779
780
781
782 ohci_err (ohci, "OHCI Unrecoverable Error, scheduling NEC chip restart\n");
783
784 ohci_writel (ohci, OHCI_INTR_UE, ®s->intrdisable);
785
786 schedule_work (&ohci->nec_work);
787 } else {
788 disable (ohci);
789 ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
790 }
791
792 ohci_dump (ohci, 1);
793 ohci_usb_reset (ohci);
794 }
795
796 if (ints & OHCI_INTR_RHSC) {
797 ohci_vdbg(ohci, "rhsc\n");
798 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
799 ohci_writel(ohci, OHCI_INTR_RD | OHCI_INTR_RHSC,
800 ®s->intrstatus);
801
802
803
804
805
806
807
808
809
810 ohci_writel(ohci, OHCI_INTR_RHSC, ®s->intrdisable);
811 usb_hcd_poll_rh_status(hcd);
812 }
813
814
815
816
817
818 else if (ints & OHCI_INTR_RD) {
819 ohci_vdbg(ohci, "resume detect\n");
820 ohci_writel(ohci, OHCI_INTR_RD, ®s->intrstatus);
821 hcd->poll_rh = 1;
822 if (ohci->autostop) {
823 spin_lock (&ohci->lock);
824 ohci_rh_resume (ohci);
825 spin_unlock (&ohci->lock);
826 } else
827 usb_hcd_resume_root_hub(hcd);
828 }
829
830 if (ints & OHCI_INTR_WDH) {
831 spin_lock (&ohci->lock);
832 dl_done_list (ohci);
833 spin_unlock (&ohci->lock);
834 }
835
836 if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) {
837 spin_lock(&ohci->lock);
838 if (ohci->ed_to_check) {
839 struct ed *ed = ohci->ed_to_check;
840
841 if (check_ed(ohci, ed)) {
842
843
844
845 if (--ohci->zf_delay == 0) {
846 struct td *td = list_entry(
847 ed->td_list.next,
848 struct td, td_list);
849 ohci_warn(ohci,
850 "Reclaiming orphan TD %p\n",
851 td);
852 takeback_td(ohci, td);
853 ohci->ed_to_check = NULL;
854 }
855 } else
856 ohci->ed_to_check = NULL;
857 }
858 spin_unlock(&ohci->lock);
859 }
860
861
862
863
864
865
866 spin_lock (&ohci->lock);
867 if (ohci->ed_rm_list)
868 finish_unlinks (ohci, ohci_frame_no(ohci));
869 if ((ints & OHCI_INTR_SF) != 0
870 && !ohci->ed_rm_list
871 && !ohci->ed_to_check
872 && HC_IS_RUNNING(hcd->state))
873 ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable);
874 spin_unlock (&ohci->lock);
875
876 if (HC_IS_RUNNING(hcd->state)) {
877 ohci_writel (ohci, ints, ®s->intrstatus);
878 ohci_writel (ohci, OHCI_INTR_MIE, ®s->intrenable);
879
880 (void) ohci_readl (ohci, &ohci->regs->control);
881 }
882
883 return IRQ_HANDLED;
884}
885
886
887
888static void ohci_stop (struct usb_hcd *hcd)
889{
890 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
891
892 ohci_dump (ohci, 1);
893
894 flush_scheduled_work();
895
896 ohci_usb_reset (ohci);
897 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
898 free_irq(hcd->irq, hcd);
899 hcd->irq = -1;
900
901 if (quirk_zfmicro(ohci))
902 del_timer(&ohci->unlink_watchdog);
903 if (quirk_amdiso(ohci))
904 amd_iso_dev_put();
905
906 remove_debug_files (ohci);
907 ohci_mem_cleanup (ohci);
908 if (ohci->hcca) {
909 dma_free_coherent (hcd->self.controller,
910 sizeof *ohci->hcca,
911 ohci->hcca, ohci->hcca_dma);
912 ohci->hcca = NULL;
913 ohci->hcca_dma = 0;
914 }
915}
916
917
918
919#if defined(CONFIG_PM) || defined(CONFIG_PCI)
920
921
922static int ohci_restart (struct ohci_hcd *ohci)
923{
924 int temp;
925 int i;
926 struct urb_priv *priv;
927
928 spin_lock_irq(&ohci->lock);
929 disable (ohci);
930
931
932 if (!list_empty (&ohci->pending))
933 ohci_dbg(ohci, "abort schedule...\n");
934 list_for_each_entry (priv, &ohci->pending, pending) {
935 struct urb *urb = priv->td[0]->urb;
936 struct ed *ed = priv->ed;
937
938 switch (ed->state) {
939 case ED_OPER:
940 ed->state = ED_UNLINK;
941 ed->hwINFO |= cpu_to_hc32(ohci, ED_DEQUEUE);
942 ed_deschedule (ohci, ed);
943
944 ed->ed_next = ohci->ed_rm_list;
945 ed->ed_prev = NULL;
946 ohci->ed_rm_list = ed;
947
948 case ED_UNLINK:
949 break;
950 default:
951 ohci_dbg(ohci, "bogus ed %p state %d\n",
952 ed, ed->state);
953 }
954
955 if (!urb->unlinked)
956 urb->unlinked = -ESHUTDOWN;
957 }
958 finish_unlinks (ohci, 0);
959 spin_unlock_irq(&ohci->lock);
960
961
962
963
964 for (i = 0; i < NUM_INTS; i++) ohci->load [i] = 0;
965 for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table [i] = 0;
966
967
968 ohci->ed_rm_list = NULL;
969
970
971 ohci->ed_controltail = NULL;
972 ohci->ed_bulktail = NULL;
973
974 if ((temp = ohci_run (ohci)) < 0) {
975 ohci_err (ohci, "can't restart, %d\n", temp);
976 return temp;
977 }
978 ohci_dbg(ohci, "restart complete\n");
979 return 0;
980}
981
982#endif
983
984
985
986MODULE_AUTHOR (DRIVER_AUTHOR);
987MODULE_DESCRIPTION(DRIVER_DESC);
988MODULE_LICENSE ("GPL");
989
990#ifdef CONFIG_PCI
991#include "ohci-pci.c"
992#define PCI_DRIVER ohci_pci_driver
993#endif
994
995#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111)
996#include "ohci-sa1111.c"
997#define SA1111_DRIVER ohci_hcd_sa1111_driver
998#endif
999
1000#ifdef CONFIG_ARCH_S3C2410
1001#include "ohci-s3c2410.c"
1002#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
1003#endif
1004
1005#ifdef CONFIG_ARCH_OMAP
1006#include "ohci-omap.c"
1007#define PLATFORM_DRIVER ohci_hcd_omap_driver
1008#endif
1009
1010#ifdef CONFIG_ARCH_LH7A404
1011#include "ohci-lh7a404.c"
1012#define PLATFORM_DRIVER ohci_hcd_lh7a404_driver
1013#endif
1014
1015#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
1016#include "ohci-pxa27x.c"
1017#define PLATFORM_DRIVER ohci_hcd_pxa27x_driver
1018#endif
1019
1020#ifdef CONFIG_ARCH_EP93XX
1021#include "ohci-ep93xx.c"
1022#define PLATFORM_DRIVER ohci_hcd_ep93xx_driver
1023#endif
1024
1025#ifdef CONFIG_SOC_AU1X00
1026#include "ohci-au1xxx.c"
1027#define PLATFORM_DRIVER ohci_hcd_au1xxx_driver
1028#endif
1029
1030#ifdef CONFIG_PNX8550
1031#include "ohci-pnx8550.c"
1032#define PLATFORM_DRIVER ohci_hcd_pnx8550_driver
1033#endif
1034
1035#ifdef CONFIG_USB_OHCI_HCD_PPC_SOC
1036#include "ohci-ppc-soc.c"
1037#define PLATFORM_DRIVER ohci_hcd_ppc_soc_driver
1038#endif
1039
1040#ifdef CONFIG_ARCH_AT91
1041#include "ohci-at91.c"
1042#define PLATFORM_DRIVER ohci_hcd_at91_driver
1043#endif
1044
1045#ifdef CONFIG_ARCH_PNX4008
1046#include "ohci-pnx4008.c"
1047#define PLATFORM_DRIVER usb_hcd_pnx4008_driver
1048#endif
1049
1050#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
1051 defined(CONFIG_CPU_SUBTYPE_SH7721) || \
1052 defined(CONFIG_CPU_SUBTYPE_SH7763)
1053#include "ohci-sh.c"
1054#define PLATFORM_DRIVER ohci_hcd_sh_driver
1055#endif
1056
1057
1058#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
1059#include "ohci-ppc-of.c"
1060#define OF_PLATFORM_DRIVER ohci_hcd_ppc_of_driver
1061#endif
1062
1063#ifdef CONFIG_PPC_PS3
1064#include "ohci-ps3.c"
1065#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
1066#endif
1067
1068#ifdef CONFIG_USB_OHCI_HCD_SSB
1069#include "ohci-ssb.c"
1070#define SSB_OHCI_DRIVER ssb_ohci_driver
1071#endif
1072
1073#ifdef CONFIG_MFD_SM501
1074#include "ohci-sm501.c"
1075#define SM501_OHCI_DRIVER ohci_hcd_sm501_driver
1076#endif
1077
1078#ifdef CONFIG_MFD_TC6393XB
1079#include "ohci-tmio.c"
1080#define TMIO_OHCI_DRIVER ohci_hcd_tmio_driver
1081#endif
1082
1083#if !defined(PCI_DRIVER) && \
1084 !defined(PLATFORM_DRIVER) && \
1085 !defined(OF_PLATFORM_DRIVER) && \
1086 !defined(SA1111_DRIVER) && \
1087 !defined(PS3_SYSTEM_BUS_DRIVER) && \
1088 !defined(SM501_OHCI_DRIVER) && \
1089 !defined(TMIO_OHCI_DRIVER) && \
1090 !defined(SSB_OHCI_DRIVER)
1091#error "missing bus glue for ohci-hcd"
1092#endif
1093
1094static int __init ohci_hcd_mod_init(void)
1095{
1096 int retval = 0;
1097
1098 if (usb_disabled())
1099 return -ENODEV;
1100
1101 printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
1102 pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
1103 sizeof (struct ed), sizeof (struct td));
1104 set_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1105
1106#ifdef DEBUG
1107 ohci_debug_root = debugfs_create_dir("ohci", NULL);
1108 if (!ohci_debug_root) {
1109 retval = -ENOENT;
1110 goto error_debug;
1111 }
1112#endif
1113
1114#ifdef PS3_SYSTEM_BUS_DRIVER
1115 retval = ps3_ohci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
1116 if (retval < 0)
1117 goto error_ps3;
1118#endif
1119
1120#ifdef PLATFORM_DRIVER
1121 retval = platform_driver_register(&PLATFORM_DRIVER);
1122 if (retval < 0)
1123 goto error_platform;
1124#endif
1125
1126#ifdef OF_PLATFORM_DRIVER
1127 retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
1128 if (retval < 0)
1129 goto error_of_platform;
1130#endif
1131
1132#ifdef SA1111_DRIVER
1133 retval = sa1111_driver_register(&SA1111_DRIVER);
1134 if (retval < 0)
1135 goto error_sa1111;
1136#endif
1137
1138#ifdef PCI_DRIVER
1139 retval = pci_register_driver(&PCI_DRIVER);
1140 if (retval < 0)
1141 goto error_pci;
1142#endif
1143
1144#ifdef SSB_OHCI_DRIVER
1145 retval = ssb_driver_register(&SSB_OHCI_DRIVER);
1146 if (retval)
1147 goto error_ssb;
1148#endif
1149
1150#ifdef SM501_OHCI_DRIVER
1151 retval = platform_driver_register(&SM501_OHCI_DRIVER);
1152 if (retval < 0)
1153 goto error_sm501;
1154#endif
1155
1156#ifdef TMIO_OHCI_DRIVER
1157 retval = platform_driver_register(&TMIO_OHCI_DRIVER);
1158 if (retval < 0)
1159 goto error_tmio;
1160#endif
1161
1162 return retval;
1163
1164
1165#ifdef TMIO_OHCI_DRIVER
1166 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1167 error_tmio:
1168#endif
1169#ifdef SM501_OHCI_DRIVER
1170 platform_driver_unregister(&SM501_OHCI_DRIVER);
1171 error_sm501:
1172#endif
1173#ifdef SSB_OHCI_DRIVER
1174 ssb_driver_unregister(&SSB_OHCI_DRIVER);
1175 error_ssb:
1176#endif
1177#ifdef PCI_DRIVER
1178 pci_unregister_driver(&PCI_DRIVER);
1179 error_pci:
1180#endif
1181#ifdef SA1111_DRIVER
1182 sa1111_driver_unregister(&SA1111_DRIVER);
1183 error_sa1111:
1184#endif
1185#ifdef OF_PLATFORM_DRIVER
1186 of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
1187 error_of_platform:
1188#endif
1189#ifdef PLATFORM_DRIVER
1190 platform_driver_unregister(&PLATFORM_DRIVER);
1191 error_platform:
1192#endif
1193#ifdef PS3_SYSTEM_BUS_DRIVER
1194 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
1195 error_ps3:
1196#endif
1197#ifdef DEBUG
1198 debugfs_remove(ohci_debug_root);
1199 ohci_debug_root = NULL;
1200 error_debug:
1201#endif
1202
1203 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1204 return retval;
1205}
1206module_init(ohci_hcd_mod_init);
1207
1208static void __exit ohci_hcd_mod_exit(void)
1209{
1210#ifdef TMIO_OHCI_DRIVER
1211 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1212#endif
1213#ifdef SM501_OHCI_DRIVER
1214 platform_driver_unregister(&SM501_OHCI_DRIVER);
1215#endif
1216#ifdef SSB_OHCI_DRIVER
1217 ssb_driver_unregister(&SSB_OHCI_DRIVER);
1218#endif
1219#ifdef PCI_DRIVER
1220 pci_unregister_driver(&PCI_DRIVER);
1221#endif
1222#ifdef SA1111_DRIVER
1223 sa1111_driver_unregister(&SA1111_DRIVER);
1224#endif
1225#ifdef OF_PLATFORM_DRIVER
1226 of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
1227#endif
1228#ifdef PLATFORM_DRIVER
1229 platform_driver_unregister(&PLATFORM_DRIVER);
1230#endif
1231#ifdef PS3_SYSTEM_BUS_DRIVER
1232 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
1233#endif
1234#ifdef DEBUG
1235 debugfs_remove(ohci_debug_root);
1236#endif
1237 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1238}
1239module_exit(ohci_hcd_mod_exit);
1240