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30#include <linux/usb/otg.h>
31
32#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
33
34#ifdef CONFIG_PM
35
36static int ehci_hub_control(
37 struct usb_hcd *hcd,
38 u16 typeReq,
39 u16 wValue,
40 u16 wIndex,
41 char *buf,
42 u16 wLength
43);
44
45
46
47
48static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
49{
50 u32 __iomem *reg;
51 u32 status;
52 int port;
53 __le32 buf;
54 struct usb_hcd *hcd = ehci_to_hcd(ehci);
55
56 if (!ehci->owned_ports)
57 return;
58
59
60 port = HCS_N_PORTS(ehci->hcs_params);
61 while (port--) {
62 if (test_bit(port, &ehci->owned_ports)) {
63 reg = &ehci->regs->port_status[port];
64 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
65 if (!(status & PORT_POWER)) {
66 status |= PORT_POWER;
67 ehci_writel(ehci, status, reg);
68 }
69 }
70 }
71
72
73 msleep(20);
74
75 spin_lock_irq(&ehci->lock);
76 port = HCS_N_PORTS(ehci->hcs_params);
77 while (port--) {
78 if (test_bit(port, &ehci->owned_ports)) {
79 reg = &ehci->regs->port_status[port];
80 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
81
82
83 if (status & PORT_OWNER)
84 clear_bit(port, &ehci->owned_ports);
85 else if (test_bit(port, &ehci->companion_ports))
86 ehci_writel(ehci, status & ~PORT_PE, reg);
87 else {
88 spin_unlock_irq(&ehci->lock);
89 ehci_hub_control(hcd, SetPortFeature,
90 USB_PORT_FEAT_RESET, port + 1,
91 NULL, 0);
92 spin_lock_irq(&ehci->lock);
93 }
94 }
95 }
96 spin_unlock_irq(&ehci->lock);
97
98 if (!ehci->owned_ports)
99 return;
100 msleep(90);
101
102 spin_lock_irq(&ehci->lock);
103 port = HCS_N_PORTS(ehci->hcs_params);
104 while (port--) {
105 if (test_bit(port, &ehci->owned_ports)) {
106 spin_unlock_irq(&ehci->lock);
107 ehci_hub_control(hcd, GetPortStatus,
108 0, port + 1,
109 (char *) &buf, sizeof(buf));
110 spin_lock_irq(&ehci->lock);
111
112
113
114
115
116 reg = &ehci->regs->port_status[port];
117 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
118 if (status & PORT_OWNER)
119 ehci_writel(ehci, status | PORT_CSC, reg);
120 else {
121 ehci_dbg(ehci, "failed handover port %d: %x\n",
122 port + 1, status);
123 ehci_writel(ehci, status & ~PORT_PE, reg);
124 }
125 }
126 }
127
128 ehci->owned_ports = 0;
129 spin_unlock_irq(&ehci->lock);
130}
131
132static int ehci_port_change(struct ehci_hcd *ehci)
133{
134 int i = HCS_N_PORTS(ehci->hcs_params);
135
136
137
138 if (ehci_readl(ehci, &ehci->regs->status) & STS_PCD)
139 return 1;
140
141
142
143
144
145
146 while (i--)
147 if (ehci_readl(ehci, &ehci->regs->port_status[i]) & PORT_CSC)
148 return 1;
149
150 return 0;
151}
152
153static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
154 bool suspending, bool do_wakeup)
155{
156 int port;
157 u32 temp;
158
159
160
161
162
163
164 if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup)
165 return;
166
167 spin_lock_irq(&ehci->lock);
168
169
170 if (ehci->has_hostpc) {
171 port = HCS_N_PORTS(ehci->hcs_params);
172 while (port--) {
173 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
174
175 temp = ehci_readl(ehci, hostpc_reg);
176 ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg);
177 }
178 spin_unlock_irq(&ehci->lock);
179 msleep(5);
180 spin_lock_irq(&ehci->lock);
181 }
182
183 port = HCS_N_PORTS(ehci->hcs_params);
184 while (port--) {
185 u32 __iomem *reg = &ehci->regs->port_status[port];
186 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
187 u32 t2 = t1 & ~PORT_WAKE_BITS;
188
189
190
191
192 if (!suspending) {
193 if (t1 & PORT_CONNECT)
194 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
195 else
196 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
197 }
198 ehci_vdbg(ehci, "port %d, %08x -> %08x\n",
199 port + 1, t1, t2);
200 ehci_writel(ehci, t2, reg);
201 }
202
203
204 if (ehci->has_hostpc) {
205 port = HCS_N_PORTS(ehci->hcs_params);
206 while (port--) {
207 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
208
209 temp = ehci_readl(ehci, hostpc_reg);
210 ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg);
211 }
212 }
213
214
215 if (!suspending && ehci_port_change(ehci))
216 usb_hcd_resume_root_hub(ehci_to_hcd(ehci));
217
218 spin_unlock_irq(&ehci->lock);
219}
220
221static int ehci_bus_suspend (struct usb_hcd *hcd)
222{
223 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
224 int port;
225 int mask;
226 int changed;
227
228 ehci_dbg(ehci, "suspend root hub\n");
229
230 if (time_before (jiffies, ehci->next_statechange))
231 msleep(5);
232
233
234 ehci_quiesce(ehci);
235
236 spin_lock_irq (&ehci->lock);
237 if (ehci->rh_state < EHCI_RH_RUNNING)
238 goto done;
239
240
241
242
243
244
245 if (hcd->self.root_hub->do_remote_wakeup) {
246 if (ehci->resuming_ports) {
247 spin_unlock_irq(&ehci->lock);
248 ehci_dbg(ehci, "suspend failed because a port is resuming\n");
249 return -EBUSY;
250 }
251 }
252
253
254
255
256
257
258 ehci->bus_suspended = 0;
259 ehci->owned_ports = 0;
260 changed = 0;
261 port = HCS_N_PORTS(ehci->hcs_params);
262 while (port--) {
263 u32 __iomem *reg = &ehci->regs->port_status [port];
264 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
265 u32 t2 = t1 & ~PORT_WAKE_BITS;
266
267
268 if (t1 & PORT_OWNER)
269 set_bit(port, &ehci->owned_ports);
270 else if ((t1 & PORT_PE) && !(t1 & PORT_SUSPEND)) {
271 t2 |= PORT_SUSPEND;
272 set_bit(port, &ehci->bus_suspended);
273 }
274
275
276 if (hcd->self.root_hub->do_remote_wakeup) {
277
278
279
280
281
282 if (t1 & PORT_CONNECT)
283 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
284 else
285 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
286 }
287
288 if (t1 != t2) {
289 ehci_vdbg (ehci, "port %d, %08x -> %08x\n",
290 port + 1, t1, t2);
291 ehci_writel(ehci, t2, reg);
292 changed = 1;
293 }
294 }
295
296 if (changed && ehci->has_hostpc) {
297 spin_unlock_irq(&ehci->lock);
298 msleep(5);
299 spin_lock_irq(&ehci->lock);
300
301 port = HCS_N_PORTS(ehci->hcs_params);
302 while (port--) {
303 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
304 u32 t3;
305
306 t3 = ehci_readl(ehci, hostpc_reg);
307 ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg);
308 t3 = ehci_readl(ehci, hostpc_reg);
309 ehci_dbg(ehci, "Port %d phy low-power mode %s\n",
310 port, (t3 & HOSTPC_PHCD) ?
311 "succeeded" : "failed");
312 }
313 }
314 spin_unlock_irq(&ehci->lock);
315
316
317 if (ehci->bus_suspended)
318 udelay(150);
319
320
321 ehci_halt (ehci);
322
323 spin_lock_irq(&ehci->lock);
324 if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD))
325 ehci_handle_controller_death(ehci);
326 if (ehci->rh_state != EHCI_RH_RUNNING)
327 goto done;
328 ehci->rh_state = EHCI_RH_SUSPENDED;
329
330 end_unlink_async(ehci);
331 unlink_empty_async_suspended(ehci);
332 ehci_handle_intr_unlinks(ehci);
333 end_free_itds(ehci);
334
335
336 mask = INTR_MASK;
337 if (!hcd->self.root_hub->do_remote_wakeup)
338 mask &= ~STS_PCD;
339 ehci_writel(ehci, mask, &ehci->regs->intr_enable);
340 ehci_readl(ehci, &ehci->regs->intr_enable);
341
342 done:
343 ehci->next_statechange = jiffies + msecs_to_jiffies(10);
344 ehci->enabled_hrtimer_events = 0;
345 ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
346 spin_unlock_irq (&ehci->lock);
347
348 hrtimer_cancel(&ehci->hrtimer);
349 return 0;
350}
351
352
353
354static int ehci_bus_resume (struct usb_hcd *hcd)
355{
356 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
357 u32 temp;
358 u32 power_okay;
359 int i;
360 unsigned long resume_needed = 0;
361
362 if (time_before (jiffies, ehci->next_statechange))
363 msleep(5);
364 spin_lock_irq (&ehci->lock);
365 if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown)
366 goto shutdown;
367
368 if (unlikely(ehci->debug)) {
369 if (!dbgp_reset_prep(hcd))
370 ehci->debug = NULL;
371 else
372 dbgp_external_startup(hcd);
373 }
374
375
376
377
378
379
380
381 power_okay = ehci_readl(ehci, &ehci->regs->intr_enable);
382 ehci_dbg(ehci, "resume root hub%s\n",
383 power_okay ? "" : " after power loss");
384
385
386
387
388 ehci_writel(ehci, 0, &ehci->regs->intr_enable);
389
390
391 ehci_writel(ehci, 0, &ehci->regs->segment);
392 ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
393 ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next);
394
395
396 ehci->command |= CMD_RUN;
397 ehci_writel(ehci, ehci->command, &ehci->regs->command);
398 ehci->rh_state = EHCI_RH_RUNNING;
399
400
401
402
403
404
405 i = HCS_N_PORTS(ehci->hcs_params);
406 while (i--) {
407 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
408 if ((temp & PORT_PE) &&
409 !(temp & (PORT_SUSPEND | PORT_RESUME))) {
410 ehci_dbg(ehci, "Port status(0x%x) is wrong\n", temp);
411 spin_unlock_irq(&ehci->lock);
412 msleep(8);
413 spin_lock_irq(&ehci->lock);
414 break;
415 }
416 }
417
418 if (ehci->shutdown)
419 goto shutdown;
420
421
422 if (ehci->bus_suspended && ehci->has_hostpc) {
423 i = HCS_N_PORTS(ehci->hcs_params);
424 while (i--) {
425 if (test_bit(i, &ehci->bus_suspended)) {
426 u32 __iomem *hostpc_reg =
427 &ehci->regs->hostpc[i];
428
429 temp = ehci_readl(ehci, hostpc_reg);
430 ehci_writel(ehci, temp & ~HOSTPC_PHCD,
431 hostpc_reg);
432 }
433 }
434 spin_unlock_irq(&ehci->lock);
435 msleep(5);
436 spin_lock_irq(&ehci->lock);
437 if (ehci->shutdown)
438 goto shutdown;
439 }
440
441
442 i = HCS_N_PORTS (ehci->hcs_params);
443 while (i--) {
444 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
445 temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
446 if (test_bit(i, &ehci->bus_suspended) &&
447 (temp & PORT_SUSPEND)) {
448 temp |= PORT_RESUME;
449 set_bit(i, &resume_needed);
450 }
451 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
452 }
453
454
455 if (resume_needed) {
456 spin_unlock_irq(&ehci->lock);
457 msleep(20);
458 spin_lock_irq(&ehci->lock);
459 if (ehci->shutdown)
460 goto shutdown;
461 }
462
463 i = HCS_N_PORTS (ehci->hcs_params);
464 while (i--) {
465 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
466 if (test_bit(i, &resume_needed)) {
467 temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
468 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
469 ehci_vdbg (ehci, "resumed port %d\n", i + 1);
470 }
471 }
472
473 ehci->next_statechange = jiffies + msecs_to_jiffies(5);
474 spin_unlock_irq(&ehci->lock);
475
476 ehci_handover_companion_ports(ehci);
477
478
479 spin_lock_irq(&ehci->lock);
480 if (ehci->shutdown)
481 goto shutdown;
482 ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
483 (void) ehci_readl(ehci, &ehci->regs->intr_enable);
484 spin_unlock_irq(&ehci->lock);
485
486 return 0;
487
488 shutdown:
489 spin_unlock_irq(&ehci->lock);
490 return -ESHUTDOWN;
491}
492
493#else
494
495#define ehci_bus_suspend NULL
496#define ehci_bus_resume NULL
497
498#endif
499
500
501
502
503
504
505static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner)
506{
507 u32 __iomem *status_reg;
508 u32 port_status;
509 int try;
510
511 status_reg = &ehci->regs->port_status[portnum];
512
513
514
515
516
517
518 for (try = 4; try > 0; --try) {
519 spin_lock_irq(&ehci->lock);
520 port_status = ehci_readl(ehci, status_reg);
521 if ((port_status & PORT_OWNER) == new_owner
522 || (port_status & (PORT_OWNER | PORT_CONNECT))
523 == 0)
524 try = 0;
525 else {
526 port_status ^= PORT_OWNER;
527 port_status &= ~(PORT_PE | PORT_RWC_BITS);
528 ehci_writel(ehci, port_status, status_reg);
529 }
530 spin_unlock_irq(&ehci->lock);
531 if (try > 1)
532 msleep(5);
533 }
534}
535
536
537
538static int check_reset_complete (
539 struct ehci_hcd *ehci,
540 int index,
541 u32 __iomem *status_reg,
542 int port_status
543) {
544 if (!(port_status & PORT_CONNECT))
545 return port_status;
546
547
548 if (!(port_status & PORT_PE)) {
549
550
551 if (ehci_is_TDI(ehci)) {
552 ehci_dbg (ehci,
553 "Failed to enable port %d on root hub TT\n",
554 index+1);
555 return port_status;
556 }
557
558 ehci_dbg (ehci, "port %d full speed --> companion\n",
559 index + 1);
560
561
562 port_status |= PORT_OWNER;
563 port_status &= ~PORT_RWC_BITS;
564 ehci_writel(ehci, port_status, status_reg);
565
566
567 if (ehci->has_amcc_usb23)
568 set_ohci_hcfs(ehci, 1);
569 } else {
570 ehci_dbg(ehci, "port %d reset complete, port enabled\n",
571 index + 1);
572
573 if (ehci->has_amcc_usb23)
574 set_ohci_hcfs(ehci, 0);
575 }
576
577 return port_status;
578}
579
580
581
582
583
584
585static int
586ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
587{
588 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
589 u32 temp, status;
590 u32 mask;
591 int ports, i, retval = 1;
592 unsigned long flags;
593 u32 ppcd = ~0;
594
595
596 buf [0] = 0;
597 ports = HCS_N_PORTS (ehci->hcs_params);
598 if (ports > 7) {
599 buf [1] = 0;
600 retval++;
601 }
602
603
604
605
606 status = ehci->resuming_ports;
607
608
609
610
611
612
613
614 if (!ignore_oc)
615 mask = PORT_CSC | PORT_PEC | PORT_OCC;
616 else
617 mask = PORT_CSC | PORT_PEC;
618
619
620
621
622
623 spin_lock_irqsave (&ehci->lock, flags);
624
625
626 if (ehci->has_ppcd)
627 ppcd = ehci_readl(ehci, &ehci->regs->status) >> 16;
628
629 for (i = 0; i < ports; i++) {
630
631 if (ppcd & (1 << i))
632 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
633 else
634 temp = 0;
635
636
637
638
639
640
641
642
643 if ((temp & mask) != 0 || test_bit(i, &ehci->port_c_suspend)
644 || (ehci->reset_done[i] && time_after_eq(
645 jiffies, ehci->reset_done[i]))) {
646 if (i < 7)
647 buf [0] |= 1 << (i + 1);
648 else
649 buf [1] |= 1 << (i - 7);
650 status = STS_PCD;
651 }
652 }
653
654
655 if (ehci->resuming_ports)
656 mod_timer(&hcd->rh_timer, jiffies + msecs_to_jiffies(25));
657
658 spin_unlock_irqrestore (&ehci->lock, flags);
659 return status ? retval : 0;
660}
661
662
663
664static void
665ehci_hub_descriptor (
666 struct ehci_hcd *ehci,
667 struct usb_hub_descriptor *desc
668) {
669 int ports = HCS_N_PORTS (ehci->hcs_params);
670 u16 temp;
671
672 desc->bDescriptorType = 0x29;
673 desc->bPwrOn2PwrGood = 10;
674 desc->bHubContrCurrent = 0;
675
676 desc->bNbrPorts = ports;
677 temp = 1 + (ports / 8);
678 desc->bDescLength = 7 + 2 * temp;
679
680
681 memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
682 memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
683
684 temp = 0x0008;
685 if (HCS_PPC (ehci->hcs_params))
686 temp |= 0x0001;
687 else
688 temp |= 0x0002;
689#if 0
690
691 if (HCS_INDICATOR (ehci->hcs_params))
692 temp |= 0x0080;
693#endif
694 desc->wHubCharacteristics = cpu_to_le16(temp);
695}
696
697
698
699static int ehci_hub_control (
700 struct usb_hcd *hcd,
701 u16 typeReq,
702 u16 wValue,
703 u16 wIndex,
704 char *buf,
705 u16 wLength
706) {
707 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
708 int ports = HCS_N_PORTS (ehci->hcs_params);
709 u32 __iomem *status_reg = &ehci->regs->port_status[
710 (wIndex & 0xff) - 1];
711 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1];
712 u32 temp, temp1, status;
713 unsigned long flags;
714 int retval = 0;
715 unsigned selector;
716
717
718
719
720
721
722
723
724 spin_lock_irqsave (&ehci->lock, flags);
725 switch (typeReq) {
726 case ClearHubFeature:
727 switch (wValue) {
728 case C_HUB_LOCAL_POWER:
729 case C_HUB_OVER_CURRENT:
730
731 break;
732 default:
733 goto error;
734 }
735 break;
736 case ClearPortFeature:
737 if (!wIndex || wIndex > ports)
738 goto error;
739 wIndex--;
740 temp = ehci_readl(ehci, status_reg);
741 temp &= ~PORT_RWC_BITS;
742
743
744
745
746
747
748
749
750 switch (wValue) {
751 case USB_PORT_FEAT_ENABLE:
752 ehci_writel(ehci, temp & ~PORT_PE, status_reg);
753 break;
754 case USB_PORT_FEAT_C_ENABLE:
755 ehci_writel(ehci, temp | PORT_PEC, status_reg);
756 break;
757 case USB_PORT_FEAT_SUSPEND:
758 if (temp & PORT_RESET)
759 goto error;
760 if (ehci->no_selective_suspend)
761 break;
762#ifdef CONFIG_USB_OTG
763 if ((hcd->self.otg_port == (wIndex + 1))
764 && hcd->self.b_hnp_enable) {
765 otg_start_hnp(hcd->phy->otg);
766 break;
767 }
768#endif
769 if (!(temp & PORT_SUSPEND))
770 break;
771 if ((temp & PORT_PE) == 0)
772 goto error;
773
774
775 if (ehci->has_hostpc) {
776 temp1 = ehci_readl(ehci, hostpc_reg);
777 ehci_writel(ehci, temp1 & ~HOSTPC_PHCD,
778 hostpc_reg);
779 spin_unlock_irqrestore(&ehci->lock, flags);
780 msleep(5);
781 spin_lock_irqsave(&ehci->lock, flags);
782 }
783
784 temp &= ~PORT_WAKE_BITS;
785 ehci_writel(ehci, temp | PORT_RESUME, status_reg);
786 ehci->reset_done[wIndex] = jiffies
787 + msecs_to_jiffies(20);
788 break;
789 case USB_PORT_FEAT_C_SUSPEND:
790 clear_bit(wIndex, &ehci->port_c_suspend);
791 break;
792 case USB_PORT_FEAT_POWER:
793 if (HCS_PPC (ehci->hcs_params))
794 ehci_writel(ehci, temp & ~PORT_POWER,
795 status_reg);
796 break;
797 case USB_PORT_FEAT_C_CONNECTION:
798 ehci_writel(ehci, temp | PORT_CSC, status_reg);
799 break;
800 case USB_PORT_FEAT_C_OVER_CURRENT:
801 ehci_writel(ehci, temp | PORT_OCC, status_reg);
802 break;
803 case USB_PORT_FEAT_C_RESET:
804
805 break;
806 default:
807 goto error;
808 }
809 ehci_readl(ehci, &ehci->regs->command);
810 break;
811 case GetHubDescriptor:
812 ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
813 buf);
814 break;
815 case GetHubStatus:
816
817 memset (buf, 0, 4);
818
819 break;
820 case GetPortStatus:
821 if (!wIndex || wIndex > ports)
822 goto error;
823 wIndex--;
824 status = 0;
825 temp = ehci_readl(ehci, status_reg);
826
827
828 if (temp & PORT_CSC)
829 status |= USB_PORT_STAT_C_CONNECTION << 16;
830 if (temp & PORT_PEC)
831 status |= USB_PORT_STAT_C_ENABLE << 16;
832
833 if ((temp & PORT_OCC) && !ignore_oc){
834 status |= USB_PORT_STAT_C_OVERCURRENT << 16;
835
836
837
838
839
840
841
842
843 if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle))
844 && HCS_PPC(ehci->hcs_params)) {
845 ehci_writel(ehci,
846 temp & ~(PORT_RWC_BITS | PORT_POWER),
847 status_reg);
848 temp = ehci_readl(ehci, status_reg);
849 }
850 }
851
852
853 if (temp & PORT_RESUME) {
854
855
856 if (!ehci->reset_done[wIndex]) {
857
858 ehci->reset_done[wIndex] = jiffies
859 + msecs_to_jiffies(20);
860 usb_hcd_start_port_resume(&hcd->self, wIndex);
861
862 mod_timer(&ehci_to_hcd(ehci)->rh_timer,
863 ehci->reset_done[wIndex]);
864 }
865
866
867 else if (time_after_eq(jiffies,
868 ehci->reset_done[wIndex])) {
869 clear_bit(wIndex, &ehci->suspended_ports);
870 set_bit(wIndex, &ehci->port_c_suspend);
871 ehci->reset_done[wIndex] = 0;
872 usb_hcd_end_port_resume(&hcd->self, wIndex);
873
874
875 temp &= ~(PORT_RWC_BITS |
876 PORT_SUSPEND | PORT_RESUME);
877 ehci_writel(ehci, temp, status_reg);
878 clear_bit(wIndex, &ehci->resuming_ports);
879 retval = handshake(ehci, status_reg,
880 PORT_RESUME, 0, 2000 );
881 if (retval != 0) {
882 ehci_err(ehci,
883 "port %d resume error %d\n",
884 wIndex + 1, retval);
885 goto error;
886 }
887 temp = ehci_readl(ehci, status_reg);
888 }
889 }
890
891
892 if ((temp & PORT_RESET)
893 && time_after_eq(jiffies,
894 ehci->reset_done[wIndex])) {
895 status |= USB_PORT_STAT_C_RESET << 16;
896 ehci->reset_done [wIndex] = 0;
897 clear_bit(wIndex, &ehci->resuming_ports);
898
899
900 ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET),
901 status_reg);
902
903
904
905 retval = handshake(ehci, status_reg,
906 PORT_RESET, 0, 1000);
907 if (retval != 0) {
908 ehci_err (ehci, "port %d reset error %d\n",
909 wIndex + 1, retval);
910 goto error;
911 }
912
913
914 temp = check_reset_complete (ehci, wIndex, status_reg,
915 ehci_readl(ehci, status_reg));
916 }
917
918 if (!(temp & (PORT_RESUME|PORT_RESET))) {
919 ehci->reset_done[wIndex] = 0;
920 clear_bit(wIndex, &ehci->resuming_ports);
921 }
922
923
924 if ((temp & PORT_CONNECT) &&
925 test_bit(wIndex, &ehci->companion_ports)) {
926 temp &= ~PORT_RWC_BITS;
927 temp |= PORT_OWNER;
928 ehci_writel(ehci, temp, status_reg);
929 ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1);
930 temp = ehci_readl(ehci, status_reg);
931 }
932
933
934
935
936
937
938
939 if (temp & PORT_CONNECT) {
940 status |= USB_PORT_STAT_CONNECTION;
941
942 if (ehci->has_hostpc) {
943 temp1 = ehci_readl(ehci, hostpc_reg);
944 status |= ehci_port_speed(ehci, temp1);
945 } else
946 status |= ehci_port_speed(ehci, temp);
947 }
948 if (temp & PORT_PE)
949 status |= USB_PORT_STAT_ENABLE;
950
951
952 if (temp & (PORT_SUSPEND|PORT_RESUME)) {
953 status |= USB_PORT_STAT_SUSPEND;
954 } else if (test_bit(wIndex, &ehci->suspended_ports)) {
955 clear_bit(wIndex, &ehci->suspended_ports);
956 clear_bit(wIndex, &ehci->resuming_ports);
957 ehci->reset_done[wIndex] = 0;
958 if (temp & PORT_PE)
959 set_bit(wIndex, &ehci->port_c_suspend);
960 usb_hcd_end_port_resume(&hcd->self, wIndex);
961 }
962
963 if (temp & PORT_OC)
964 status |= USB_PORT_STAT_OVERCURRENT;
965 if (temp & PORT_RESET)
966 status |= USB_PORT_STAT_RESET;
967 if (temp & PORT_POWER)
968 status |= USB_PORT_STAT_POWER;
969 if (test_bit(wIndex, &ehci->port_c_suspend))
970 status |= USB_PORT_STAT_C_SUSPEND << 16;
971
972#ifndef VERBOSE_DEBUG
973 if (status & ~0xffff)
974#endif
975 dbg_port (ehci, "GetStatus", wIndex + 1, temp);
976 put_unaligned_le32(status, buf);
977 break;
978 case SetHubFeature:
979 switch (wValue) {
980 case C_HUB_LOCAL_POWER:
981 case C_HUB_OVER_CURRENT:
982
983 break;
984 default:
985 goto error;
986 }
987 break;
988 case SetPortFeature:
989 selector = wIndex >> 8;
990 wIndex &= 0xff;
991 if (unlikely(ehci->debug)) {
992
993
994 if (wIndex == HCS_DEBUG_PORT(ehci->hcs_params) &&
995 (readl(&ehci->debug->control) & DBGP_ENABLED)) {
996 retval = -ENODEV;
997 goto error_exit;
998 }
999 }
1000 if (!wIndex || wIndex > ports)
1001 goto error;
1002 wIndex--;
1003 temp = ehci_readl(ehci, status_reg);
1004 if (temp & PORT_OWNER)
1005 break;
1006
1007 temp &= ~PORT_RWC_BITS;
1008 switch (wValue) {
1009 case USB_PORT_FEAT_SUSPEND:
1010 if (ehci->no_selective_suspend)
1011 break;
1012 if ((temp & PORT_PE) == 0
1013 || (temp & PORT_RESET) != 0)
1014 goto error;
1015
1016
1017
1018
1019
1020 temp &= ~PORT_WKCONN_E;
1021 temp |= PORT_WKDISC_E | PORT_WKOC_E;
1022 ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);
1023 if (ehci->has_hostpc) {
1024 spin_unlock_irqrestore(&ehci->lock, flags);
1025 msleep(5);
1026 spin_lock_irqsave(&ehci->lock, flags);
1027 temp1 = ehci_readl(ehci, hostpc_reg);
1028 ehci_writel(ehci, temp1 | HOSTPC_PHCD,
1029 hostpc_reg);
1030 temp1 = ehci_readl(ehci, hostpc_reg);
1031 ehci_dbg(ehci, "Port%d phy low pwr mode %s\n",
1032 wIndex, (temp1 & HOSTPC_PHCD) ?
1033 "succeeded" : "failed");
1034 }
1035 set_bit(wIndex, &ehci->suspended_ports);
1036 break;
1037 case USB_PORT_FEAT_POWER:
1038 if (HCS_PPC (ehci->hcs_params))
1039 ehci_writel(ehci, temp | PORT_POWER,
1040 status_reg);
1041 break;
1042 case USB_PORT_FEAT_RESET:
1043 if (temp & PORT_RESUME)
1044 goto error;
1045
1046
1047
1048
1049 if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT
1050 && !ehci_is_TDI(ehci)
1051 && PORT_USB11 (temp)) {
1052 ehci_dbg (ehci,
1053 "port %d low speed --> companion\n",
1054 wIndex + 1);
1055 temp |= PORT_OWNER;
1056 } else {
1057 ehci_vdbg (ehci, "port %d reset\n", wIndex + 1);
1058 temp |= PORT_RESET;
1059 temp &= ~PORT_PE;
1060
1061
1062
1063
1064
1065 ehci->reset_done [wIndex] = jiffies
1066 + msecs_to_jiffies (50);
1067 }
1068 ehci_writel(ehci, temp, status_reg);
1069 break;
1070
1071
1072
1073
1074
1075
1076
1077 case USB_PORT_FEAT_TEST:
1078 if (!selector || selector > 5)
1079 goto error;
1080 spin_unlock_irqrestore(&ehci->lock, flags);
1081 ehci_quiesce(ehci);
1082 spin_lock_irqsave(&ehci->lock, flags);
1083
1084
1085 while (ports--) {
1086 u32 __iomem *sreg =
1087 &ehci->regs->port_status[ports];
1088
1089 temp = ehci_readl(ehci, sreg) & ~PORT_RWC_BITS;
1090 if (temp & PORT_PE)
1091 ehci_writel(ehci, temp | PORT_SUSPEND,
1092 sreg);
1093 }
1094
1095 spin_unlock_irqrestore(&ehci->lock, flags);
1096 ehci_halt(ehci);
1097 spin_lock_irqsave(&ehci->lock, flags);
1098
1099 temp = ehci_readl(ehci, status_reg);
1100 temp |= selector << 16;
1101 ehci_writel(ehci, temp, status_reg);
1102 break;
1103
1104 default:
1105 goto error;
1106 }
1107 ehci_readl(ehci, &ehci->regs->command);
1108 break;
1109
1110 default:
1111error:
1112
1113 retval = -EPIPE;
1114 }
1115error_exit:
1116 spin_unlock_irqrestore (&ehci->lock, flags);
1117 return retval;
1118}
1119
1120static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
1121{
1122 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1123
1124 if (ehci_is_TDI(ehci))
1125 return;
1126 set_owner(ehci, --portnum, PORT_OWNER);
1127}
1128
1129static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
1130{
1131 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1132 u32 __iomem *reg;
1133
1134 if (ehci_is_TDI(ehci))
1135 return 0;
1136 reg = &ehci->regs->port_status[portnum - 1];
1137 return ehci_readl(ehci, reg) & PORT_OWNER;
1138}
1139