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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/workqueue.h>
38#include <linux/debugfs.h>
39
40#include <asm/io.h>
41#include <asm/irq.h>
42#include <asm/system.h>
43#include <asm/unaligned.h>
44#include <asm/byteorder.h>
45
46#include "../core/hcd.h"
47
48#define DRIVER_AUTHOR "Roman Weissgaerber, David Brownell"
49#define DRIVER_DESC "USB 1.1 'Open' Host Controller (OHCI) Driver"
50
51
52
53#undef OHCI_VERBOSE_DEBUG
54
55
56#define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
57#define OHCI_INTR_INIT \
58 (OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE \
59 | OHCI_INTR_RD | OHCI_INTR_WDH)
60
61#ifdef __hppa__
62
63#define IR_DISABLE
64#endif
65
66#ifdef CONFIG_ARCH_OMAP
67
68#define IR_DISABLE
69#endif
70
71
72
73static const char hcd_name [] = "ohci_hcd";
74
75#define STATECHANGE_DELAY msecs_to_jiffies(300)
76
77#include "ohci.h"
78
79static void ohci_dump (struct ohci_hcd *ohci, int verbose);
80static int ohci_init (struct ohci_hcd *ohci);
81static void ohci_stop (struct usb_hcd *hcd);
82
83#if defined(CONFIG_PM) || defined(CONFIG_PCI)
84static int ohci_restart (struct ohci_hcd *ohci);
85#endif
86
87#ifdef CONFIG_PCI
88static void quirk_amd_pll(int state);
89static void amd_iso_dev_put(void);
90static void sb800_prefetch(struct ohci_hcd *ohci, int on);
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}
100static inline void sb800_prefetch(struct ohci_hcd *ohci, int on)
101{
102 return;
103}
104#endif
105
106
107#include "ohci-hub.c"
108#include "ohci-dbg.c"
109#include "ohci-mem.c"
110#include "ohci-q.c"
111
112
113
114
115
116
117#if defined(CONFIG_SA1111)
118#define IRQ_NOTMINE IRQ_HANDLED
119#else
120#define IRQ_NOTMINE IRQ_NONE
121#endif
122
123
124
125static int distrust_firmware = 1;
126module_param (distrust_firmware, bool, 0);
127MODULE_PARM_DESC (distrust_firmware,
128 "true to distrust firmware power/overcurrent setup");
129
130
131static int no_handshake = 0;
132module_param (no_handshake, bool, 0);
133MODULE_PARM_DESC (no_handshake, "true (not default) disables BIOS handshake");
134
135
136
137
138
139
140static int ohci_urb_enqueue (
141 struct usb_hcd *hcd,
142 struct urb *urb,
143 gfp_t mem_flags
144) {
145 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
146 struct ed *ed;
147 urb_priv_t *urb_priv;
148 unsigned int pipe = urb->pipe;
149 int i, size = 0;
150 unsigned long flags;
151 int retval = 0;
152
153#ifdef OHCI_VERBOSE_DEBUG
154 urb_print(urb, "SUB", usb_pipein(pipe), -EINPROGRESS);
155#endif
156
157
158 if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
159 return -ENOMEM;
160
161
162 switch (ed->type) {
163 case PIPE_CONTROL:
164
165 if (urb->transfer_buffer_length > 4096)
166 return -EMSGSIZE;
167
168
169 size = 2;
170
171
172
173 default:
174
175 size += urb->transfer_buffer_length / 4096;
176
177 if ((urb->transfer_buffer_length % 4096) != 0)
178 size++;
179
180 if (size == 0)
181 size++;
182 else if ((urb->transfer_flags & URB_ZERO_PACKET) != 0
183 && (urb->transfer_buffer_length
184 % usb_maxpacket (urb->dev, pipe,
185 usb_pipeout (pipe))) == 0)
186 size++;
187 break;
188 case PIPE_ISOCHRONOUS:
189 size = urb->number_of_packets;
190 break;
191 }
192
193
194 urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
195 mem_flags);
196 if (!urb_priv)
197 return -ENOMEM;
198 INIT_LIST_HEAD (&urb_priv->pending);
199 urb_priv->length = size;
200 urb_priv->ed = ed;
201
202
203 for (i = 0; i < size; i++) {
204 urb_priv->td [i] = td_alloc (ohci, mem_flags);
205 if (!urb_priv->td [i]) {
206 urb_priv->length = i;
207 urb_free_priv (ohci, urb_priv);
208 return -ENOMEM;
209 }
210 }
211
212 spin_lock_irqsave (&ohci->lock, flags);
213
214
215 if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)) {
216 retval = -ENODEV;
217 goto fail;
218 }
219 if (!HC_IS_RUNNING(hcd->state)) {
220 retval = -ENODEV;
221 goto fail;
222 }
223 retval = usb_hcd_link_urb_to_ep(hcd, urb);
224 if (retval)
225 goto fail;
226
227
228 if (ed->state == ED_IDLE) {
229 retval = ed_schedule (ohci, ed);
230 if (retval < 0) {
231 usb_hcd_unlink_urb_from_ep(hcd, urb);
232 goto fail;
233 }
234 if (ed->type == PIPE_ISOCHRONOUS) {
235 u16 frame = ohci_frame_no(ohci);
236
237
238 frame += max_t (u16, 8, ed->interval);
239 frame &= ~(ed->interval - 1);
240 frame |= ed->branch;
241 urb->start_frame = frame;
242
243
244
245
246 }
247 } else if (ed->type == PIPE_ISOCHRONOUS)
248 urb->start_frame = ed->last_iso + ed->interval;
249
250
251
252
253
254 urb->hcpriv = urb_priv;
255 td_submit_urb (ohci, urb);
256
257fail:
258 if (retval)
259 urb_free_priv (ohci, urb_priv);
260 spin_unlock_irqrestore (&ohci->lock, flags);
261 return retval;
262}
263
264
265
266
267
268
269
270static int ohci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
271{
272 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
273 unsigned long flags;
274 int rc;
275
276#ifdef OHCI_VERBOSE_DEBUG
277 urb_print(urb, "UNLINK", 1, status);
278#endif
279
280 spin_lock_irqsave (&ohci->lock, flags);
281 rc = usb_hcd_check_unlink_urb(hcd, urb, status);
282 if (rc) {
283 ;
284 } else if (HC_IS_RUNNING(hcd->state)) {
285 urb_priv_t *urb_priv;
286
287
288
289
290
291 urb_priv = urb->hcpriv;
292 if (urb_priv) {
293 if (urb_priv->ed->state == ED_OPER)
294 start_ed_unlink (ohci, urb_priv->ed);
295 }
296 } else {
297
298
299
300
301 if (urb->hcpriv)
302 finish_urb(ohci, urb, status);
303 }
304 spin_unlock_irqrestore (&ohci->lock, flags);
305 return rc;
306}
307
308
309
310
311
312
313
314static void
315ohci_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
316{
317 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
318 unsigned long flags;
319 struct ed *ed = ep->hcpriv;
320 unsigned limit = 1000;
321
322
323
324
325 if (!ed)
326 return;
327
328rescan:
329 spin_lock_irqsave (&ohci->lock, flags);
330
331 if (!HC_IS_RUNNING (hcd->state)) {
332sanitize:
333 ed->state = ED_IDLE;
334 if (quirk_zfmicro(ohci) && ed->type == PIPE_INTERRUPT)
335 ohci->eds_scheduled--;
336 finish_unlinks (ohci, 0);
337 }
338
339 switch (ed->state) {
340 case ED_UNLINK:
341
342 if (limit-- == 0) {
343 ohci_warn(ohci, "ED unlink timeout\n");
344 if (quirk_zfmicro(ohci)) {
345 ohci_warn(ohci, "Attempting ZF TD recovery\n");
346 ohci->ed_to_check = ed;
347 ohci->zf_delay = 2;
348 }
349 goto sanitize;
350 }
351 spin_unlock_irqrestore (&ohci->lock, flags);
352 schedule_timeout_uninterruptible(1);
353 goto rescan;
354 case ED_IDLE:
355 if (list_empty (&ed->td_list)) {
356 td_free (ohci, ed->dummy);
357 ed_free (ohci, ed);
358 break;
359 }
360
361 default:
362
363
364
365 ohci_err (ohci, "leak ed %p (#%02x) state %d%s\n",
366 ed, ep->desc.bEndpointAddress, ed->state,
367 list_empty (&ed->td_list) ? "" : " (has tds)");
368 td_free (ohci, ed->dummy);
369 break;
370 }
371 ep->hcpriv = NULL;
372 spin_unlock_irqrestore (&ohci->lock, flags);
373 return;
374}
375
376static int ohci_get_frame (struct usb_hcd *hcd)
377{
378 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
379
380 return ohci_frame_no(ohci);
381}
382
383static void ohci_usb_reset (struct ohci_hcd *ohci)
384{
385 ohci->hc_control = ohci_readl (ohci, &ohci->regs->control);
386 ohci->hc_control &= OHCI_CTRL_RWC;
387 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
388}
389
390
391
392
393
394static void
395ohci_shutdown (struct usb_hcd *hcd)
396{
397 struct ohci_hcd *ohci;
398
399 ohci = hcd_to_ohci (hcd);
400 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
401 ohci_usb_reset (ohci);
402
403 (void) ohci_readl (ohci, &ohci->regs->control);
404}
405
406static int check_ed(struct ohci_hcd *ohci, struct ed *ed)
407{
408 return (hc32_to_cpu(ohci, ed->hwINFO) & ED_IN) != 0
409 && (hc32_to_cpu(ohci, ed->hwHeadP) & TD_MASK)
410 == (hc32_to_cpu(ohci, ed->hwTailP) & TD_MASK)
411 && !list_empty(&ed->td_list);
412}
413
414
415
416
417
418
419static void unlink_watchdog_func(unsigned long _ohci)
420{
421 unsigned long flags;
422 unsigned max;
423 unsigned seen_count = 0;
424 unsigned i;
425 struct ed **seen = NULL;
426 struct ohci_hcd *ohci = (struct ohci_hcd *) _ohci;
427
428 spin_lock_irqsave(&ohci->lock, flags);
429 max = ohci->eds_scheduled;
430 if (!max)
431 goto done;
432
433 if (ohci->ed_to_check)
434 goto out;
435
436 seen = kcalloc(max, sizeof *seen, GFP_ATOMIC);
437 if (!seen)
438 goto out;
439
440 for (i = 0; i < NUM_INTS; i++) {
441 struct ed *ed = ohci->periodic[i];
442
443 while (ed) {
444 unsigned temp;
445
446
447 for (temp = 0; temp < seen_count; temp++) {
448 if (seen[temp] == ed) {
449
450 ed = NULL;
451 break;
452 }
453 }
454 if (!ed)
455 break;
456 seen[seen_count++] = ed;
457 if (!check_ed(ohci, ed)) {
458 ed = ed->ed_next;
459 continue;
460 }
461
462
463
464
465 ohci->ed_to_check = ed;
466 ohci->zf_delay = 2;
467
468
469
470
471
472
473
474 ohci_writel(ohci, OHCI_INTR_SF,
475 &ohci->regs->intrstatus);
476 ohci_writel(ohci, OHCI_INTR_SF,
477 &ohci->regs->intrenable);
478
479
480 (void) ohci_readl(ohci, &ohci->regs->control);
481
482 goto out;
483 }
484 }
485out:
486 kfree(seen);
487 if (ohci->eds_scheduled)
488 mod_timer(&ohci->unlink_watchdog, round_jiffies(jiffies + HZ));
489done:
490 spin_unlock_irqrestore(&ohci->lock, flags);
491}
492
493
494
495
496
497
498
499static int ohci_init (struct ohci_hcd *ohci)
500{
501 int ret;
502 struct usb_hcd *hcd = ohci_to_hcd(ohci);
503
504 if (distrust_firmware)
505 ohci->flags |= OHCI_QUIRK_HUB_POWER;
506
507 disable (ohci);
508 ohci->regs = hcd->regs;
509
510
511
512
513
514#ifndef IR_DISABLE
515
516 if (!no_handshake && ohci_readl (ohci,
517 &ohci->regs->control) & OHCI_CTRL_IR) {
518 u32 temp;
519
520 ohci_dbg (ohci, "USB HC TakeOver from BIOS/SMM\n");
521
522
523
524
525
526 temp = 500;
527
528 ohci_writel (ohci, OHCI_INTR_OC, &ohci->regs->intrenable);
529 ohci_writel (ohci, OHCI_OCR, &ohci->regs->cmdstatus);
530 while (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_IR) {
531 msleep (10);
532 if (--temp == 0) {
533 ohci_err (ohci, "USB HC takeover failed!"
534 " (BIOS/SMM bug)\n");
535 return -EBUSY;
536 }
537 }
538 ohci_usb_reset (ohci);
539 }
540#endif
541
542
543 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
544
545
546 if (ohci_readl (ohci, &ohci->regs->control) & OHCI_CTRL_RWC)
547 ohci->hc_control |= OHCI_CTRL_RWC;
548
549
550 if (ohci->num_ports == 0)
551 ohci->num_ports = roothub_a(ohci) & RH_A_NDP;
552
553 if (ohci->hcca)
554 return 0;
555
556 ohci->hcca = dma_alloc_coherent (hcd->self.controller,
557 sizeof *ohci->hcca, &ohci->hcca_dma, 0);
558 if (!ohci->hcca)
559 return -ENOMEM;
560
561 if ((ret = ohci_mem_init (ohci)) < 0)
562 ohci_stop (hcd);
563 else {
564 create_debug_files (ohci);
565 }
566
567 return ret;
568}
569
570
571
572
573
574
575
576static int ohci_run (struct ohci_hcd *ohci)
577{
578 u32 mask, val;
579 int first = ohci->fminterval == 0;
580 struct usb_hcd *hcd = ohci_to_hcd(ohci);
581
582 disable (ohci);
583
584
585 if (first) {
586
587 val = ohci_readl (ohci, &ohci->regs->fminterval);
588 ohci->fminterval = val & 0x3fff;
589 if (ohci->fminterval != FI)
590 ohci_dbg (ohci, "fminterval delta %d\n",
591 ohci->fminterval - FI);
592 ohci->fminterval |= FSMP (ohci->fminterval) << 16;
593
594 }
595
596
597
598
599
600
601
602 if ((ohci->hc_control & OHCI_CTRL_RWC) != 0)
603 device_set_wakeup_capable(hcd->self.controller, 1);
604
605 switch (ohci->hc_control & OHCI_CTRL_HCFS) {
606 case OHCI_USB_OPER:
607 val = 0;
608 break;
609 case OHCI_USB_SUSPEND:
610 case OHCI_USB_RESUME:
611 ohci->hc_control &= OHCI_CTRL_RWC;
612 ohci->hc_control |= OHCI_USB_RESUME;
613 val = 10 ;
614 break;
615
616 default:
617 ohci->hc_control &= OHCI_CTRL_RWC;
618 ohci->hc_control |= OHCI_USB_RESET;
619 val = 50 ;
620 break;
621 }
622 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
623
624 (void) ohci_readl (ohci, &ohci->regs->control);
625 msleep(val);
626
627 memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
628
629
630 spin_lock_irq (&ohci->lock);
631
632retry:
633
634 ohci_writel (ohci, OHCI_HCR, &ohci->regs->cmdstatus);
635 val = 30;
636 while ((ohci_readl (ohci, &ohci->regs->cmdstatus) & OHCI_HCR) != 0) {
637 if (--val == 0) {
638 spin_unlock_irq (&ohci->lock);
639 ohci_err (ohci, "USB HC reset timed out!\n");
640 return -1;
641 }
642 udelay (1);
643 }
644
645
646
647
648
649
650
651
652
653
654 if (ohci->flags & OHCI_QUIRK_INITRESET) {
655 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
656
657 (void) ohci_readl (ohci, &ohci->regs->control);
658 }
659
660
661
662 ohci_writel (ohci, 0, &ohci->regs->ed_controlhead);
663 ohci_writel (ohci, 0, &ohci->regs->ed_bulkhead);
664
665
666 ohci_writel (ohci, (u32) ohci->hcca_dma, &ohci->regs->hcca);
667
668 periodic_reinit (ohci);
669
670
671
672
673 if ((ohci_readl (ohci, &ohci->regs->fminterval) & 0x3fff0000) == 0
674 || !ohci_readl (ohci, &ohci->regs->periodicstart)) {
675 if (!(ohci->flags & OHCI_QUIRK_INITRESET)) {
676 ohci->flags |= OHCI_QUIRK_INITRESET;
677 ohci_dbg (ohci, "enabling initreset quirk\n");
678 goto retry;
679 }
680 spin_unlock_irq (&ohci->lock);
681 ohci_err (ohci, "init err (%08x %04x)\n",
682 ohci_readl (ohci, &ohci->regs->fminterval),
683 ohci_readl (ohci, &ohci->regs->periodicstart));
684 return -EOVERFLOW;
685 }
686
687
688 hcd->poll_rh = 1;
689 hcd->uses_new_polling = 1;
690
691
692 ohci->hc_control &= OHCI_CTRL_RWC;
693 ohci->hc_control |= OHCI_CONTROL_INIT | OHCI_USB_OPER;
694 ohci_writel (ohci, ohci->hc_control, &ohci->regs->control);
695 hcd->state = HC_STATE_RUNNING;
696
697
698 ohci_writel (ohci, RH_HS_DRWE, &ohci->regs->roothub.status);
699
700
701 mask = OHCI_INTR_INIT;
702 ohci_writel (ohci, ~0, &ohci->regs->intrstatus);
703 ohci_writel (ohci, mask, &ohci->regs->intrenable);
704
705
706 val = roothub_a (ohci);
707 val &= ~(RH_A_PSM | RH_A_OCPM);
708 if (ohci->flags & OHCI_QUIRK_SUPERIO) {
709
710 val |= RH_A_NOCP;
711 val &= ~(RH_A_POTPGT | RH_A_NPS);
712 ohci_writel (ohci, val, &ohci->regs->roothub.a);
713 } else if ((ohci->flags & OHCI_QUIRK_AMD756) ||
714 (ohci->flags & OHCI_QUIRK_HUB_POWER)) {
715
716
717
718 val |= RH_A_NPS;
719 ohci_writel (ohci, val, &ohci->regs->roothub.a);
720 }
721 ohci_writel (ohci, RH_HS_LPSC, &ohci->regs->roothub.status);
722 ohci_writel (ohci, (val & RH_A_NPS) ? 0 : RH_B_PPCM,
723 &ohci->regs->roothub.b);
724
725 (void) ohci_readl (ohci, &ohci->regs->control);
726
727 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
728 spin_unlock_irq (&ohci->lock);
729
730
731 mdelay ((val >> 23) & 0x1fe);
732 hcd->state = HC_STATE_RUNNING;
733
734 if (quirk_zfmicro(ohci)) {
735
736 setup_timer(&ohci->unlink_watchdog, unlink_watchdog_func,
737 (unsigned long) ohci);
738
739 ohci->eds_scheduled = 0;
740 ohci->ed_to_check = NULL;
741 }
742
743 ohci_dump (ohci, 1);
744
745 return 0;
746}
747
748
749
750
751
752static irqreturn_t ohci_irq (struct usb_hcd *hcd)
753{
754 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
755 struct ohci_regs __iomem *regs = ohci->regs;
756 int ints;
757
758
759
760
761
762 ints = ohci_readl(ohci, ®s->intrstatus);
763
764
765
766
767 if (ints == ~(u32)0) {
768 disable (ohci);
769 ohci_dbg (ohci, "device removed!\n");
770 return IRQ_HANDLED;
771 }
772
773
774 ints &= ohci_readl(ohci, ®s->intrenable);
775
776
777 if (ints == 0)
778 return IRQ_NOTMINE;
779
780 if (ints & OHCI_INTR_UE) {
781
782 if (quirk_nec(ohci)) {
783
784
785
786 ohci_err (ohci, "OHCI Unrecoverable Error, scheduling NEC chip restart\n");
787
788 ohci_writel (ohci, OHCI_INTR_UE, ®s->intrdisable);
789
790 schedule_work (&ohci->nec_work);
791 } else {
792 disable (ohci);
793 ohci_err (ohci, "OHCI Unrecoverable Error, disabled\n");
794 }
795
796 ohci_dump (ohci, 1);
797 ohci_usb_reset (ohci);
798 }
799
800 if (ints & OHCI_INTR_RHSC) {
801 ohci_vdbg(ohci, "rhsc\n");
802 ohci->next_statechange = jiffies + STATECHANGE_DELAY;
803 ohci_writel(ohci, OHCI_INTR_RD | OHCI_INTR_RHSC,
804 ®s->intrstatus);
805
806
807
808
809
810
811
812
813
814 ohci_writel(ohci, OHCI_INTR_RHSC, ®s->intrdisable);
815 usb_hcd_poll_rh_status(hcd);
816 }
817
818
819
820
821
822 else if (ints & OHCI_INTR_RD) {
823 ohci_vdbg(ohci, "resume detect\n");
824 ohci_writel(ohci, OHCI_INTR_RD, ®s->intrstatus);
825 hcd->poll_rh = 1;
826 if (ohci->autostop) {
827 spin_lock (&ohci->lock);
828 ohci_rh_resume (ohci);
829 spin_unlock (&ohci->lock);
830 } else
831 usb_hcd_resume_root_hub(hcd);
832 }
833
834 if (ints & OHCI_INTR_WDH) {
835 spin_lock (&ohci->lock);
836 dl_done_list (ohci);
837 spin_unlock (&ohci->lock);
838 }
839
840 if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) {
841 spin_lock(&ohci->lock);
842 if (ohci->ed_to_check) {
843 struct ed *ed = ohci->ed_to_check;
844
845 if (check_ed(ohci, ed)) {
846
847
848
849 if (--ohci->zf_delay == 0) {
850 struct td *td = list_entry(
851 ed->td_list.next,
852 struct td, td_list);
853 ohci_warn(ohci,
854 "Reclaiming orphan TD %p\n",
855 td);
856 takeback_td(ohci, td);
857 ohci->ed_to_check = NULL;
858 }
859 } else
860 ohci->ed_to_check = NULL;
861 }
862 spin_unlock(&ohci->lock);
863 }
864
865
866
867
868
869
870 spin_lock (&ohci->lock);
871 if (ohci->ed_rm_list)
872 finish_unlinks (ohci, ohci_frame_no(ohci));
873 if ((ints & OHCI_INTR_SF) != 0
874 && !ohci->ed_rm_list
875 && !ohci->ed_to_check
876 && HC_IS_RUNNING(hcd->state))
877 ohci_writel (ohci, OHCI_INTR_SF, ®s->intrdisable);
878 spin_unlock (&ohci->lock);
879
880 if (HC_IS_RUNNING(hcd->state)) {
881 ohci_writel (ohci, ints, ®s->intrstatus);
882 ohci_writel (ohci, OHCI_INTR_MIE, ®s->intrenable);
883
884 (void) ohci_readl (ohci, &ohci->regs->control);
885 }
886
887 return IRQ_HANDLED;
888}
889
890
891
892static void ohci_stop (struct usb_hcd *hcd)
893{
894 struct ohci_hcd *ohci = hcd_to_ohci (hcd);
895
896 ohci_dump (ohci, 1);
897
898 flush_scheduled_work();
899
900 ohci_usb_reset (ohci);
901 ohci_writel (ohci, OHCI_INTR_MIE, &ohci->regs->intrdisable);
902 free_irq(hcd->irq, hcd);
903 hcd->irq = -1;
904
905 if (quirk_zfmicro(ohci))
906 del_timer(&ohci->unlink_watchdog);
907 if (quirk_amdiso(ohci))
908 amd_iso_dev_put();
909
910 remove_debug_files (ohci);
911 ohci_mem_cleanup (ohci);
912 if (ohci->hcca) {
913 dma_free_coherent (hcd->self.controller,
914 sizeof *ohci->hcca,
915 ohci->hcca, ohci->hcca_dma);
916 ohci->hcca = NULL;
917 ohci->hcca_dma = 0;
918 }
919}
920
921
922
923#if defined(CONFIG_PM) || defined(CONFIG_PCI)
924
925
926static int ohci_restart (struct ohci_hcd *ohci)
927{
928 int temp;
929 int i;
930 struct urb_priv *priv;
931
932 spin_lock_irq(&ohci->lock);
933 disable (ohci);
934
935
936 if (!list_empty (&ohci->pending))
937 ohci_dbg(ohci, "abort schedule...\n");
938 list_for_each_entry (priv, &ohci->pending, pending) {
939 struct urb *urb = priv->td[0]->urb;
940 struct ed *ed = priv->ed;
941
942 switch (ed->state) {
943 case ED_OPER:
944 ed->state = ED_UNLINK;
945 ed->hwINFO |= cpu_to_hc32(ohci, ED_DEQUEUE);
946 ed_deschedule (ohci, ed);
947
948 ed->ed_next = ohci->ed_rm_list;
949 ed->ed_prev = NULL;
950 ohci->ed_rm_list = ed;
951
952 case ED_UNLINK:
953 break;
954 default:
955 ohci_dbg(ohci, "bogus ed %p state %d\n",
956 ed, ed->state);
957 }
958
959 if (!urb->unlinked)
960 urb->unlinked = -ESHUTDOWN;
961 }
962 finish_unlinks (ohci, 0);
963 spin_unlock_irq(&ohci->lock);
964
965
966
967
968 for (i = 0; i < NUM_INTS; i++) ohci->load [i] = 0;
969 for (i = 0; i < NUM_INTS; i++) ohci->hcca->int_table [i] = 0;
970
971
972 ohci->ed_rm_list = NULL;
973
974
975 ohci->ed_controltail = NULL;
976 ohci->ed_bulktail = NULL;
977
978 if ((temp = ohci_run (ohci)) < 0) {
979 ohci_err (ohci, "can't restart, %d\n", temp);
980 return temp;
981 }
982 ohci_dbg(ohci, "restart complete\n");
983 return 0;
984}
985
986#endif
987
988
989
990MODULE_AUTHOR (DRIVER_AUTHOR);
991MODULE_DESCRIPTION(DRIVER_DESC);
992MODULE_LICENSE ("GPL");
993
994#ifdef CONFIG_PCI
995#include "ohci-pci.c"
996#define PCI_DRIVER ohci_pci_driver
997#endif
998
999#if defined(CONFIG_ARCH_SA1100) && defined(CONFIG_SA1111)
1000#include "ohci-sa1111.c"
1001#define SA1111_DRIVER ohci_hcd_sa1111_driver
1002#endif
1003
1004#if defined(CONFIG_ARCH_S3C2410) || defined(CONFIG_ARCH_S3C64XX)
1005#include "ohci-s3c2410.c"
1006#define PLATFORM_DRIVER ohci_hcd_s3c2410_driver
1007#endif
1008
1009#ifdef CONFIG_ARCH_OMAP
1010#include "ohci-omap.c"
1011#define PLATFORM_DRIVER ohci_hcd_omap_driver
1012#endif
1013
1014#ifdef CONFIG_ARCH_LH7A404
1015#include "ohci-lh7a404.c"
1016#define PLATFORM_DRIVER ohci_hcd_lh7a404_driver
1017#endif
1018
1019#if defined(CONFIG_PXA27x) || defined(CONFIG_PXA3xx)
1020#include "ohci-pxa27x.c"
1021#define PLATFORM_DRIVER ohci_hcd_pxa27x_driver
1022#endif
1023
1024#ifdef CONFIG_ARCH_EP93XX
1025#include "ohci-ep93xx.c"
1026#define PLATFORM_DRIVER ohci_hcd_ep93xx_driver
1027#endif
1028
1029#ifdef CONFIG_SOC_AU1X00
1030#include "ohci-au1xxx.c"
1031#define PLATFORM_DRIVER ohci_hcd_au1xxx_driver
1032#endif
1033
1034#ifdef CONFIG_PNX8550
1035#include "ohci-pnx8550.c"
1036#define PLATFORM_DRIVER ohci_hcd_pnx8550_driver
1037#endif
1038
1039#ifdef CONFIG_USB_OHCI_HCD_PPC_SOC
1040#include "ohci-ppc-soc.c"
1041#define PLATFORM_DRIVER ohci_hcd_ppc_soc_driver
1042#endif
1043
1044#ifdef CONFIG_ARCH_AT91
1045#include "ohci-at91.c"
1046#define PLATFORM_DRIVER ohci_hcd_at91_driver
1047#endif
1048
1049#ifdef CONFIG_ARCH_PNX4008
1050#include "ohci-pnx4008.c"
1051#define PLATFORM_DRIVER usb_hcd_pnx4008_driver
1052#endif
1053
1054#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
1055 defined(CONFIG_CPU_SUBTYPE_SH7721) || \
1056 defined(CONFIG_CPU_SUBTYPE_SH7763) || \
1057 defined(CONFIG_CPU_SUBTYPE_SH7786)
1058#include "ohci-sh.c"
1059#define PLATFORM_DRIVER ohci_hcd_sh_driver
1060#endif
1061
1062
1063#ifdef CONFIG_USB_OHCI_HCD_PPC_OF
1064#include "ohci-ppc-of.c"
1065#define OF_PLATFORM_DRIVER ohci_hcd_ppc_of_driver
1066#endif
1067
1068#ifdef CONFIG_PPC_PS3
1069#include "ohci-ps3.c"
1070#define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
1071#endif
1072
1073#ifdef CONFIG_USB_OHCI_HCD_SSB
1074#include "ohci-ssb.c"
1075#define SSB_OHCI_DRIVER ssb_ohci_driver
1076#endif
1077
1078#ifdef CONFIG_MFD_SM501
1079#include "ohci-sm501.c"
1080#define SM501_OHCI_DRIVER ohci_hcd_sm501_driver
1081#endif
1082
1083#ifdef CONFIG_MFD_TC6393XB
1084#include "ohci-tmio.c"
1085#define TMIO_OHCI_DRIVER ohci_hcd_tmio_driver
1086#endif
1087
1088#if !defined(PCI_DRIVER) && \
1089 !defined(PLATFORM_DRIVER) && \
1090 !defined(OF_PLATFORM_DRIVER) && \
1091 !defined(SA1111_DRIVER) && \
1092 !defined(PS3_SYSTEM_BUS_DRIVER) && \
1093 !defined(SM501_OHCI_DRIVER) && \
1094 !defined(TMIO_OHCI_DRIVER) && \
1095 !defined(SSB_OHCI_DRIVER)
1096#error "missing bus glue for ohci-hcd"
1097#endif
1098
1099static int __init ohci_hcd_mod_init(void)
1100{
1101 int retval = 0;
1102
1103 if (usb_disabled())
1104 return -ENODEV;
1105
1106 printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
1107 pr_debug ("%s: block sizes: ed %Zd td %Zd\n", hcd_name,
1108 sizeof (struct ed), sizeof (struct td));
1109 set_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1110
1111#ifdef DEBUG
1112 ohci_debug_root = debugfs_create_dir("ohci", usb_debug_root);
1113 if (!ohci_debug_root) {
1114 retval = -ENOENT;
1115 goto error_debug;
1116 }
1117#endif
1118
1119#ifdef PS3_SYSTEM_BUS_DRIVER
1120 retval = ps3_ohci_driver_register(&PS3_SYSTEM_BUS_DRIVER);
1121 if (retval < 0)
1122 goto error_ps3;
1123#endif
1124
1125#ifdef PLATFORM_DRIVER
1126 retval = platform_driver_register(&PLATFORM_DRIVER);
1127 if (retval < 0)
1128 goto error_platform;
1129#endif
1130
1131#ifdef OF_PLATFORM_DRIVER
1132 retval = of_register_platform_driver(&OF_PLATFORM_DRIVER);
1133 if (retval < 0)
1134 goto error_of_platform;
1135#endif
1136
1137#ifdef SA1111_DRIVER
1138 retval = sa1111_driver_register(&SA1111_DRIVER);
1139 if (retval < 0)
1140 goto error_sa1111;
1141#endif
1142
1143#ifdef PCI_DRIVER
1144 retval = pci_register_driver(&PCI_DRIVER);
1145 if (retval < 0)
1146 goto error_pci;
1147#endif
1148
1149#ifdef SSB_OHCI_DRIVER
1150 retval = ssb_driver_register(&SSB_OHCI_DRIVER);
1151 if (retval)
1152 goto error_ssb;
1153#endif
1154
1155#ifdef SM501_OHCI_DRIVER
1156 retval = platform_driver_register(&SM501_OHCI_DRIVER);
1157 if (retval < 0)
1158 goto error_sm501;
1159#endif
1160
1161#ifdef TMIO_OHCI_DRIVER
1162 retval = platform_driver_register(&TMIO_OHCI_DRIVER);
1163 if (retval < 0)
1164 goto error_tmio;
1165#endif
1166
1167 return retval;
1168
1169
1170#ifdef TMIO_OHCI_DRIVER
1171 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1172 error_tmio:
1173#endif
1174#ifdef SM501_OHCI_DRIVER
1175 platform_driver_unregister(&SM501_OHCI_DRIVER);
1176 error_sm501:
1177#endif
1178#ifdef SSB_OHCI_DRIVER
1179 ssb_driver_unregister(&SSB_OHCI_DRIVER);
1180 error_ssb:
1181#endif
1182#ifdef PCI_DRIVER
1183 pci_unregister_driver(&PCI_DRIVER);
1184 error_pci:
1185#endif
1186#ifdef SA1111_DRIVER
1187 sa1111_driver_unregister(&SA1111_DRIVER);
1188 error_sa1111:
1189#endif
1190#ifdef OF_PLATFORM_DRIVER
1191 of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
1192 error_of_platform:
1193#endif
1194#ifdef PLATFORM_DRIVER
1195 platform_driver_unregister(&PLATFORM_DRIVER);
1196 error_platform:
1197#endif
1198#ifdef PS3_SYSTEM_BUS_DRIVER
1199 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
1200 error_ps3:
1201#endif
1202#ifdef DEBUG
1203 debugfs_remove(ohci_debug_root);
1204 ohci_debug_root = NULL;
1205 error_debug:
1206#endif
1207
1208 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1209 return retval;
1210}
1211module_init(ohci_hcd_mod_init);
1212
1213static void __exit ohci_hcd_mod_exit(void)
1214{
1215#ifdef TMIO_OHCI_DRIVER
1216 platform_driver_unregister(&TMIO_OHCI_DRIVER);
1217#endif
1218#ifdef SM501_OHCI_DRIVER
1219 platform_driver_unregister(&SM501_OHCI_DRIVER);
1220#endif
1221#ifdef SSB_OHCI_DRIVER
1222 ssb_driver_unregister(&SSB_OHCI_DRIVER);
1223#endif
1224#ifdef PCI_DRIVER
1225 pci_unregister_driver(&PCI_DRIVER);
1226#endif
1227#ifdef SA1111_DRIVER
1228 sa1111_driver_unregister(&SA1111_DRIVER);
1229#endif
1230#ifdef OF_PLATFORM_DRIVER
1231 of_unregister_platform_driver(&OF_PLATFORM_DRIVER);
1232#endif
1233#ifdef PLATFORM_DRIVER
1234 platform_driver_unregister(&PLATFORM_DRIVER);
1235#endif
1236#ifdef PS3_SYSTEM_BUS_DRIVER
1237 ps3_ohci_driver_unregister(&PS3_SYSTEM_BUS_DRIVER);
1238#endif
1239#ifdef DEBUG
1240 debugfs_remove(ohci_debug_root);
1241#endif
1242 clear_bit(USB_OHCI_LOADED, &usb_hcds_loaded);
1243}
1244module_exit(ohci_hcd_mod_exit);
1245
1246