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17
18#define PORT_WAKE_BITS (PORT_WKOC_E|PORT_WKDISC_E|PORT_WKCONN_E)
19
20#ifdef CONFIG_PM
21
22static void unlink_empty_async_suspended(struct ehci_hcd *ehci);
23
24static int persist_enabled_on_companion(struct usb_device *udev, void *unused)
25{
26 return !udev->maxchild && udev->persist_enabled &&
27 udev->bus->root_hub->speed < USB_SPEED_HIGH;
28}
29
30
31
32
33static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
34{
35 u32 __iomem *reg;
36 u32 status;
37 int port;
38 __le32 buf;
39 struct usb_hcd *hcd = ehci_to_hcd(ehci);
40
41 if (!ehci->owned_ports)
42 return;
43
44
45
46
47
48
49
50
51 if (!usb_for_each_dev(NULL, persist_enabled_on_companion))
52 return;
53
54
55 port = HCS_N_PORTS(ehci->hcs_params);
56 while (port--) {
57 if (test_bit(port, &ehci->owned_ports)) {
58 reg = &ehci->regs->port_status[port];
59 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
60 if (!(status & PORT_POWER))
61 ehci_port_power(ehci, port, true);
62 }
63 }
64
65
66 msleep(20);
67
68 spin_lock_irq(&ehci->lock);
69 port = HCS_N_PORTS(ehci->hcs_params);
70 while (port--) {
71 if (test_bit(port, &ehci->owned_ports)) {
72 reg = &ehci->regs->port_status[port];
73 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
74
75
76 if (status & PORT_OWNER)
77 clear_bit(port, &ehci->owned_ports);
78 else if (test_bit(port, &ehci->companion_ports))
79 ehci_writel(ehci, status & ~PORT_PE, reg);
80 else {
81 spin_unlock_irq(&ehci->lock);
82 ehci_hub_control(hcd, SetPortFeature,
83 USB_PORT_FEAT_RESET, port + 1,
84 NULL, 0);
85 spin_lock_irq(&ehci->lock);
86 }
87 }
88 }
89 spin_unlock_irq(&ehci->lock);
90
91 if (!ehci->owned_ports)
92 return;
93 msleep(90);
94
95 spin_lock_irq(&ehci->lock);
96 port = HCS_N_PORTS(ehci->hcs_params);
97 while (port--) {
98 if (test_bit(port, &ehci->owned_ports)) {
99 spin_unlock_irq(&ehci->lock);
100 ehci_hub_control(hcd, GetPortStatus,
101 0, port + 1,
102 (char *) &buf, sizeof(buf));
103 spin_lock_irq(&ehci->lock);
104
105
106
107
108
109 reg = &ehci->regs->port_status[port];
110 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
111 if (status & PORT_OWNER)
112 ehci_writel(ehci, status | PORT_CSC, reg);
113 else {
114 ehci_dbg(ehci, "failed handover port %d: %x\n",
115 port + 1, status);
116 ehci_writel(ehci, status & ~PORT_PE, reg);
117 }
118 }
119 }
120
121 ehci->owned_ports = 0;
122 spin_unlock_irq(&ehci->lock);
123}
124
125static int ehci_port_change(struct ehci_hcd *ehci)
126{
127 int i = HCS_N_PORTS(ehci->hcs_params);
128
129
130
131 if (ehci_readl(ehci, &ehci->regs->status) & STS_PCD)
132 return 1;
133
134
135
136
137
138
139 while (i--)
140 if (ehci_readl(ehci, &ehci->regs->port_status[i]) & PORT_CSC)
141 return 1;
142
143 return 0;
144}
145
146void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
147 bool suspending, bool do_wakeup)
148{
149 int port;
150 u32 temp;
151
152
153
154
155
156
157 if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup)
158 return;
159
160 spin_lock_irq(&ehci->lock);
161
162
163 if (ehci->has_tdi_phy_lpm) {
164 port = HCS_N_PORTS(ehci->hcs_params);
165 while (port--) {
166 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
167
168 temp = ehci_readl(ehci, hostpc_reg);
169 ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg);
170 }
171 spin_unlock_irq(&ehci->lock);
172 msleep(5);
173 spin_lock_irq(&ehci->lock);
174 }
175
176 port = HCS_N_PORTS(ehci->hcs_params);
177 while (port--) {
178 u32 __iomem *reg = &ehci->regs->port_status[port];
179 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
180 u32 t2 = t1 & ~PORT_WAKE_BITS;
181
182
183
184
185 if (!suspending) {
186 if (t1 & PORT_CONNECT)
187 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
188 else
189 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
190 }
191 ehci_writel(ehci, t2, reg);
192 }
193
194
195 if (ehci->has_tdi_phy_lpm) {
196 port = HCS_N_PORTS(ehci->hcs_params);
197 while (port--) {
198 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
199
200 temp = ehci_readl(ehci, hostpc_reg);
201 ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg);
202 }
203 }
204
205
206 if (!suspending && ehci_port_change(ehci))
207 usb_hcd_resume_root_hub(ehci_to_hcd(ehci));
208
209 spin_unlock_irq(&ehci->lock);
210}
211EXPORT_SYMBOL_GPL(ehci_adjust_port_wakeup_flags);
212
213static int ehci_bus_suspend (struct usb_hcd *hcd)
214{
215 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
216 int port;
217 int mask;
218 int changed;
219 bool fs_idle_delay;
220
221 ehci_dbg(ehci, "suspend root hub\n");
222
223 if (time_before (jiffies, ehci->next_statechange))
224 msleep(5);
225
226
227 ehci_quiesce(ehci);
228
229 spin_lock_irq (&ehci->lock);
230 if (ehci->rh_state < EHCI_RH_RUNNING)
231 goto done;
232
233
234
235
236
237
238 if (hcd->self.root_hub->do_remote_wakeup) {
239 if (ehci->resuming_ports) {
240 spin_unlock_irq(&ehci->lock);
241 ehci_dbg(ehci, "suspend failed because a port is resuming\n");
242 return -EBUSY;
243 }
244 }
245
246
247
248
249
250
251 ehci->bus_suspended = 0;
252 ehci->owned_ports = 0;
253 changed = 0;
254 fs_idle_delay = false;
255 port = HCS_N_PORTS(ehci->hcs_params);
256 while (port--) {
257 u32 __iomem *reg = &ehci->regs->port_status [port];
258 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
259 u32 t2 = t1 & ~PORT_WAKE_BITS;
260
261
262 if (t1 & PORT_OWNER)
263 set_bit(port, &ehci->owned_ports);
264 else if ((t1 & PORT_PE) && !(t1 & PORT_SUSPEND)) {
265 t2 |= PORT_SUSPEND;
266 set_bit(port, &ehci->bus_suspended);
267 }
268
269
270 if (hcd->self.root_hub->do_remote_wakeup) {
271
272
273
274
275
276 if (t1 & PORT_CONNECT)
277 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
278 else
279 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
280 }
281
282 if (t1 != t2) {
283
284
285
286
287
288
289 if ((t2 & PORT_WKDISC_E) &&
290 ehci_port_speed(ehci, t2) ==
291 USB_PORT_STAT_HIGH_SPEED)
292 fs_idle_delay = true;
293 ehci_writel(ehci, t2, reg);
294 changed = 1;
295 }
296 }
297 spin_unlock_irq(&ehci->lock);
298
299 if (changed && ehci_has_fsl_susp_errata(ehci))
300
301
302
303
304
305 usleep_range(10000, 20000);
306
307 if ((changed && ehci->has_tdi_phy_lpm) || fs_idle_delay) {
308
309
310
311
312 usleep_range(5000, 5500);
313 }
314
315 if (changed && ehci->has_tdi_phy_lpm) {
316 spin_lock_irq(&ehci->lock);
317 port = HCS_N_PORTS(ehci->hcs_params);
318 while (port--) {
319 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
320 u32 t3;
321
322 t3 = ehci_readl(ehci, hostpc_reg);
323 ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg);
324 t3 = ehci_readl(ehci, hostpc_reg);
325 ehci_dbg(ehci, "Port %d phy low-power mode %s\n",
326 port, (t3 & HOSTPC_PHCD) ?
327 "succeeded" : "failed");
328 }
329 spin_unlock_irq(&ehci->lock);
330 }
331
332
333 if (ehci->bus_suspended)
334 udelay(150);
335
336
337 ehci_halt (ehci);
338
339 spin_lock_irq(&ehci->lock);
340 if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD))
341 ehci_handle_controller_death(ehci);
342 if (ehci->rh_state != EHCI_RH_RUNNING)
343 goto done;
344 ehci->rh_state = EHCI_RH_SUSPENDED;
345
346 unlink_empty_async_suspended(ehci);
347
348
349 ehci_writel(ehci, STS_IAA, &ehci->regs->status);
350
351
352 end_iaa_cycle(ehci);
353 ehci_handle_start_intr_unlinks(ehci);
354 ehci_handle_intr_unlinks(ehci);
355 end_free_itds(ehci);
356
357
358 mask = INTR_MASK;
359 if (!hcd->self.root_hub->do_remote_wakeup)
360 mask &= ~STS_PCD;
361 ehci_writel(ehci, mask, &ehci->regs->intr_enable);
362 ehci_readl(ehci, &ehci->regs->intr_enable);
363
364 done:
365 ehci->next_statechange = jiffies + msecs_to_jiffies(10);
366 ehci->enabled_hrtimer_events = 0;
367 ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
368 spin_unlock_irq (&ehci->lock);
369
370 hrtimer_cancel(&ehci->hrtimer);
371 return 0;
372}
373
374
375
376static int ehci_bus_resume (struct usb_hcd *hcd)
377{
378 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
379 u32 temp;
380 u32 power_okay;
381 int i;
382 unsigned long resume_needed = 0;
383
384 if (time_before (jiffies, ehci->next_statechange))
385 msleep(5);
386 spin_lock_irq (&ehci->lock);
387 if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown)
388 goto shutdown;
389
390 if (unlikely(ehci->debug)) {
391 if (!dbgp_reset_prep(hcd))
392 ehci->debug = NULL;
393 else
394 dbgp_external_startup(hcd);
395 }
396
397
398
399
400
401
402
403 power_okay = ehci_readl(ehci, &ehci->regs->intr_enable);
404 ehci_dbg(ehci, "resume root hub%s\n",
405 power_okay ? "" : " after power loss");
406
407
408
409
410 ehci_writel(ehci, 0, &ehci->regs->intr_enable);
411
412
413 ehci_writel(ehci, 0, &ehci->regs->segment);
414 ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
415 ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next);
416
417
418 ehci->command |= CMD_RUN;
419 ehci_writel(ehci, ehci->command, &ehci->regs->command);
420 ehci->rh_state = EHCI_RH_RUNNING;
421
422
423
424
425
426
427 i = HCS_N_PORTS(ehci->hcs_params);
428 while (i--) {
429 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
430 if ((temp & PORT_PE) &&
431 !(temp & (PORT_SUSPEND | PORT_RESUME))) {
432 ehci_dbg(ehci, "Port status(0x%x) is wrong\n", temp);
433 spin_unlock_irq(&ehci->lock);
434 msleep(8);
435 spin_lock_irq(&ehci->lock);
436 break;
437 }
438 }
439
440 if (ehci->shutdown)
441 goto shutdown;
442
443
444 if (ehci->bus_suspended && ehci->has_tdi_phy_lpm) {
445 i = HCS_N_PORTS(ehci->hcs_params);
446 while (i--) {
447 if (test_bit(i, &ehci->bus_suspended)) {
448 u32 __iomem *hostpc_reg =
449 &ehci->regs->hostpc[i];
450
451 temp = ehci_readl(ehci, hostpc_reg);
452 ehci_writel(ehci, temp & ~HOSTPC_PHCD,
453 hostpc_reg);
454 }
455 }
456 spin_unlock_irq(&ehci->lock);
457 msleep(5);
458 spin_lock_irq(&ehci->lock);
459 if (ehci->shutdown)
460 goto shutdown;
461 }
462
463
464 i = HCS_N_PORTS (ehci->hcs_params);
465 while (i--) {
466 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
467 temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
468 if (test_bit(i, &ehci->bus_suspended) &&
469 (temp & PORT_SUSPEND)) {
470 temp |= PORT_RESUME;
471 set_bit(i, &resume_needed);
472 }
473 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
474 }
475
476
477
478
479
480 if (resume_needed) {
481 spin_unlock_irq(&ehci->lock);
482 msleep(USB_RESUME_TIMEOUT);
483 spin_lock_irq(&ehci->lock);
484 if (ehci->shutdown)
485 goto shutdown;
486 }
487
488 i = HCS_N_PORTS (ehci->hcs_params);
489 while (i--) {
490 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
491 if (test_bit(i, &resume_needed)) {
492 temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
493 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
494 }
495 }
496
497 ehci->next_statechange = jiffies + msecs_to_jiffies(5);
498 spin_unlock_irq(&ehci->lock);
499
500 ehci_handover_companion_ports(ehci);
501
502
503 spin_lock_irq(&ehci->lock);
504 if (ehci->shutdown)
505 goto shutdown;
506 ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
507 (void) ehci_readl(ehci, &ehci->regs->intr_enable);
508 spin_unlock_irq(&ehci->lock);
509
510 return 0;
511
512 shutdown:
513 spin_unlock_irq(&ehci->lock);
514 return -ESHUTDOWN;
515}
516
517static unsigned long ehci_get_resuming_ports(struct usb_hcd *hcd)
518{
519 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
520
521 return ehci->resuming_ports;
522}
523
524#else
525
526#define ehci_bus_suspend NULL
527#define ehci_bus_resume NULL
528#define ehci_get_resuming_ports NULL
529
530#endif
531
532
533
534
535
536
537static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner)
538{
539 u32 __iomem *status_reg;
540 u32 port_status;
541 int try;
542
543 status_reg = &ehci->regs->port_status[portnum];
544
545
546
547
548
549
550 for (try = 4; try > 0; --try) {
551 spin_lock_irq(&ehci->lock);
552 port_status = ehci_readl(ehci, status_reg);
553 if ((port_status & PORT_OWNER) == new_owner
554 || (port_status & (PORT_OWNER | PORT_CONNECT))
555 == 0)
556 try = 0;
557 else {
558 port_status ^= PORT_OWNER;
559 port_status &= ~(PORT_PE | PORT_RWC_BITS);
560 ehci_writel(ehci, port_status, status_reg);
561 }
562 spin_unlock_irq(&ehci->lock);
563 if (try > 1)
564 msleep(5);
565 }
566}
567
568
569
570static int check_reset_complete (
571 struct ehci_hcd *ehci,
572 int index,
573 u32 __iomem *status_reg,
574 int port_status
575) {
576 if (!(port_status & PORT_CONNECT))
577 return port_status;
578
579
580 if (!(port_status & PORT_PE)) {
581
582
583 if (ehci_is_TDI(ehci)) {
584 ehci_dbg (ehci,
585 "Failed to enable port %d on root hub TT\n",
586 index+1);
587 return port_status;
588 }
589
590 ehci_dbg (ehci, "port %d full speed --> companion\n",
591 index + 1);
592
593
594 port_status |= PORT_OWNER;
595 port_status &= ~PORT_RWC_BITS;
596 ehci_writel(ehci, port_status, status_reg);
597
598
599 if (ehci->has_amcc_usb23)
600 set_ohci_hcfs(ehci, 1);
601 } else {
602 ehci_dbg(ehci, "port %d reset complete, port enabled\n",
603 index + 1);
604
605 if (ehci->has_amcc_usb23)
606 set_ohci_hcfs(ehci, 0);
607 }
608
609 return port_status;
610}
611
612
613
614
615
616
617static int
618ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
619{
620 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
621 u32 temp, status;
622 u32 mask;
623 int ports, i, retval = 1;
624 unsigned long flags;
625 u32 ppcd = ~0;
626
627
628 buf [0] = 0;
629 ports = HCS_N_PORTS (ehci->hcs_params);
630 if (ports > 7) {
631 buf [1] = 0;
632 retval++;
633 }
634
635
636
637
638 status = ehci->resuming_ports;
639
640
641
642
643
644
645
646 if (!ignore_oc && !ehci->spurious_oc)
647 mask = PORT_CSC | PORT_PEC | PORT_OCC;
648 else
649 mask = PORT_CSC | PORT_PEC;
650
651
652
653
654
655 spin_lock_irqsave (&ehci->lock, flags);
656
657
658 if (ehci->has_ppcd)
659 ppcd = ehci_readl(ehci, &ehci->regs->status) >> 16;
660
661 for (i = 0; i < ports; i++) {
662
663 if (ppcd & (1 << i))
664 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
665 else
666 temp = 0;
667
668
669
670
671
672
673
674
675 if ((temp & mask) != 0 || test_bit(i, &ehci->port_c_suspend)
676 || (ehci->reset_done[i] && time_after_eq(
677 jiffies, ehci->reset_done[i]))) {
678 if (i < 7)
679 buf [0] |= 1 << (i + 1);
680 else
681 buf [1] |= 1 << (i - 7);
682 status = STS_PCD;
683 }
684 }
685
686
687 if (ehci->resuming_ports)
688 mod_timer(&hcd->rh_timer, jiffies + msecs_to_jiffies(25));
689
690 spin_unlock_irqrestore (&ehci->lock, flags);
691 return status ? retval : 0;
692}
693
694
695
696static void
697ehci_hub_descriptor (
698 struct ehci_hcd *ehci,
699 struct usb_hub_descriptor *desc
700) {
701 int ports = HCS_N_PORTS (ehci->hcs_params);
702 u16 temp;
703
704 desc->bDescriptorType = USB_DT_HUB;
705 desc->bPwrOn2PwrGood = 10;
706 desc->bHubContrCurrent = 0;
707
708 desc->bNbrPorts = ports;
709 temp = 1 + (ports / 8);
710 desc->bDescLength = 7 + 2 * temp;
711
712
713 memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
714 memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
715
716 temp = HUB_CHAR_INDV_PORT_OCPM;
717 if (HCS_PPC (ehci->hcs_params))
718 temp |= HUB_CHAR_INDV_PORT_LPSM;
719 else
720 temp |= HUB_CHAR_NO_LPSM;
721#if 0
722
723 if (HCS_INDICATOR (ehci->hcs_params))
724 temp |= HUB_CHAR_PORTIND;
725#endif
726 desc->wHubCharacteristics = cpu_to_le16(temp);
727}
728
729
730
731int ehci_hub_control(
732 struct usb_hcd *hcd,
733 u16 typeReq,
734 u16 wValue,
735 u16 wIndex,
736 char *buf,
737 u16 wLength
738) {
739 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
740 int ports = HCS_N_PORTS (ehci->hcs_params);
741 u32 __iomem *status_reg, *hostpc_reg;
742 u32 temp, temp1, status;
743 unsigned long flags;
744 int retval = 0;
745 unsigned selector;
746
747
748
749
750
751
752 temp = wIndex & 0xff;
753 temp -= (temp > 0);
754 status_reg = &ehci->regs->port_status[temp];
755 hostpc_reg = &ehci->regs->hostpc[temp];
756
757
758
759
760
761
762
763
764 spin_lock_irqsave (&ehci->lock, flags);
765 switch (typeReq) {
766 case ClearHubFeature:
767 switch (wValue) {
768 case C_HUB_LOCAL_POWER:
769 case C_HUB_OVER_CURRENT:
770
771 break;
772 default:
773 goto error;
774 }
775 break;
776 case ClearPortFeature:
777 if (!wIndex || wIndex > ports)
778 goto error;
779 wIndex--;
780 temp = ehci_readl(ehci, status_reg);
781 temp &= ~PORT_RWC_BITS;
782
783
784
785
786
787
788
789
790 switch (wValue) {
791 case USB_PORT_FEAT_ENABLE:
792 ehci_writel(ehci, temp & ~PORT_PE, status_reg);
793 break;
794 case USB_PORT_FEAT_C_ENABLE:
795 ehci_writel(ehci, temp | PORT_PEC, status_reg);
796 break;
797 case USB_PORT_FEAT_SUSPEND:
798 if (temp & PORT_RESET)
799 goto error;
800 if (ehci->no_selective_suspend)
801 break;
802#ifdef CONFIG_USB_OTG
803 if ((hcd->self.otg_port == (wIndex + 1))
804 && hcd->self.b_hnp_enable) {
805 otg_start_hnp(hcd->usb_phy->otg);
806 break;
807 }
808#endif
809 if (!(temp & PORT_SUSPEND))
810 break;
811 if ((temp & PORT_PE) == 0)
812 goto error;
813
814
815 if (ehci->has_tdi_phy_lpm) {
816 temp1 = ehci_readl(ehci, hostpc_reg);
817 ehci_writel(ehci, temp1 & ~HOSTPC_PHCD,
818 hostpc_reg);
819 spin_unlock_irqrestore(&ehci->lock, flags);
820 msleep(5);
821 spin_lock_irqsave(&ehci->lock, flags);
822 }
823
824 temp &= ~PORT_WAKE_BITS;
825 ehci_writel(ehci, temp | PORT_RESUME, status_reg);
826 ehci->reset_done[wIndex] = jiffies
827 + msecs_to_jiffies(USB_RESUME_TIMEOUT);
828 set_bit(wIndex, &ehci->resuming_ports);
829 usb_hcd_start_port_resume(&hcd->self, wIndex);
830 break;
831 case USB_PORT_FEAT_C_SUSPEND:
832 clear_bit(wIndex, &ehci->port_c_suspend);
833 break;
834 case USB_PORT_FEAT_POWER:
835 if (HCS_PPC(ehci->hcs_params)) {
836 spin_unlock_irqrestore(&ehci->lock, flags);
837 ehci_port_power(ehci, wIndex, false);
838 spin_lock_irqsave(&ehci->lock, flags);
839 }
840 break;
841 case USB_PORT_FEAT_C_CONNECTION:
842 ehci_writel(ehci, temp | PORT_CSC, status_reg);
843 break;
844 case USB_PORT_FEAT_C_OVER_CURRENT:
845 ehci_writel(ehci, temp | PORT_OCC, status_reg);
846 break;
847 case USB_PORT_FEAT_C_RESET:
848
849 break;
850 default:
851 goto error;
852 }
853 ehci_readl(ehci, &ehci->regs->command);
854 break;
855 case GetHubDescriptor:
856 ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
857 buf);
858 break;
859 case GetHubStatus:
860
861 memset (buf, 0, 4);
862
863 break;
864 case GetPortStatus:
865 if (!wIndex || wIndex > ports)
866 goto error;
867 wIndex--;
868 status = 0;
869 temp = ehci_readl(ehci, status_reg);
870
871
872 if (temp & PORT_CSC)
873 status |= USB_PORT_STAT_C_CONNECTION << 16;
874 if (temp & PORT_PEC)
875 status |= USB_PORT_STAT_C_ENABLE << 16;
876
877 if ((temp & PORT_OCC) && (!ignore_oc && !ehci->spurious_oc)){
878 status |= USB_PORT_STAT_C_OVERCURRENT << 16;
879
880
881
882
883
884
885
886
887 if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle))
888 && HCS_PPC(ehci->hcs_params)) {
889 spin_unlock_irqrestore(&ehci->lock, flags);
890 ehci_port_power(ehci, wIndex, false);
891 spin_lock_irqsave(&ehci->lock, flags);
892 temp = ehci_readl(ehci, status_reg);
893 }
894 }
895
896
897 if (!ehci->reset_done[wIndex]) {
898
899
900 if (temp & PORT_RESUME) {
901
902 ehci->reset_done[wIndex] = jiffies
903 + msecs_to_jiffies(20);
904 usb_hcd_start_port_resume(&hcd->self, wIndex);
905 set_bit(wIndex, &ehci->resuming_ports);
906
907 mod_timer(&ehci_to_hcd(ehci)->rh_timer,
908 ehci->reset_done[wIndex]);
909 }
910
911
912 } else if (!time_after_eq(jiffies, ehci->reset_done[wIndex])) {
913 ;
914
915
916 } else if (test_bit(wIndex, &ehci->resuming_ports)) {
917 clear_bit(wIndex, &ehci->suspended_ports);
918 set_bit(wIndex, &ehci->port_c_suspend);
919 ehci->reset_done[wIndex] = 0;
920 usb_hcd_end_port_resume(&hcd->self, wIndex);
921
922
923 temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
924 ehci_writel(ehci, temp, status_reg);
925 clear_bit(wIndex, &ehci->resuming_ports);
926 retval = ehci_handshake(ehci, status_reg,
927 PORT_RESUME, 0, 2000 );
928 if (retval != 0) {
929 ehci_err(ehci, "port %d resume error %d\n",
930 wIndex + 1, retval);
931 goto error;
932 }
933 temp = ehci_readl(ehci, status_reg);
934
935
936 } else {
937 status |= USB_PORT_STAT_C_RESET << 16;
938 ehci->reset_done [wIndex] = 0;
939
940
941 ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET),
942 status_reg);
943
944
945
946 retval = ehci_handshake(ehci, status_reg,
947 PORT_RESET, 0, 1000);
948 if (retval != 0) {
949 ehci_err (ehci, "port %d reset error %d\n",
950 wIndex + 1, retval);
951 goto error;
952 }
953
954
955 temp = check_reset_complete (ehci, wIndex, status_reg,
956 ehci_readl(ehci, status_reg));
957 }
958
959
960 if ((temp & PORT_CONNECT) &&
961 test_bit(wIndex, &ehci->companion_ports)) {
962 temp &= ~PORT_RWC_BITS;
963 temp |= PORT_OWNER;
964 ehci_writel(ehci, temp, status_reg);
965 ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1);
966 temp = ehci_readl(ehci, status_reg);
967 }
968
969
970
971
972
973
974
975 if (temp & PORT_CONNECT) {
976 status |= USB_PORT_STAT_CONNECTION;
977
978 if (ehci->has_hostpc) {
979 temp1 = ehci_readl(ehci, hostpc_reg);
980 status |= ehci_port_speed(ehci, temp1);
981 } else
982 status |= ehci_port_speed(ehci, temp);
983 }
984 if (temp & PORT_PE)
985 status |= USB_PORT_STAT_ENABLE;
986
987
988 if (temp & (PORT_SUSPEND|PORT_RESUME)) {
989 status |= USB_PORT_STAT_SUSPEND;
990 } else if (test_bit(wIndex, &ehci->suspended_ports)) {
991 clear_bit(wIndex, &ehci->suspended_ports);
992 clear_bit(wIndex, &ehci->resuming_ports);
993 ehci->reset_done[wIndex] = 0;
994 if (temp & PORT_PE)
995 set_bit(wIndex, &ehci->port_c_suspend);
996 usb_hcd_end_port_resume(&hcd->self, wIndex);
997 }
998
999 if (temp & PORT_OC)
1000 status |= USB_PORT_STAT_OVERCURRENT;
1001 if (temp & PORT_RESET)
1002 status |= USB_PORT_STAT_RESET;
1003 if (temp & PORT_POWER)
1004 status |= USB_PORT_STAT_POWER;
1005 if (test_bit(wIndex, &ehci->port_c_suspend))
1006 status |= USB_PORT_STAT_C_SUSPEND << 16;
1007
1008 if (status & ~0xffff)
1009 dbg_port(ehci, "GetStatus", wIndex + 1, temp);
1010 put_unaligned_le32(status, buf);
1011 break;
1012 case SetHubFeature:
1013 switch (wValue) {
1014 case C_HUB_LOCAL_POWER:
1015 case C_HUB_OVER_CURRENT:
1016
1017 break;
1018 default:
1019 goto error;
1020 }
1021 break;
1022 case SetPortFeature:
1023 selector = wIndex >> 8;
1024 wIndex &= 0xff;
1025 if (unlikely(ehci->debug)) {
1026
1027
1028 if (wIndex == HCS_DEBUG_PORT(ehci->hcs_params) &&
1029 (readl(&ehci->debug->control) & DBGP_ENABLED)) {
1030 retval = -ENODEV;
1031 goto error_exit;
1032 }
1033 }
1034 if (!wIndex || wIndex > ports)
1035 goto error;
1036 wIndex--;
1037 temp = ehci_readl(ehci, status_reg);
1038 if (temp & PORT_OWNER)
1039 break;
1040
1041 temp &= ~PORT_RWC_BITS;
1042 switch (wValue) {
1043 case USB_PORT_FEAT_SUSPEND:
1044 if (ehci->no_selective_suspend)
1045 break;
1046 if ((temp & PORT_PE) == 0
1047 || (temp & PORT_RESET) != 0)
1048 goto error;
1049
1050
1051
1052
1053
1054 temp &= ~PORT_WKCONN_E;
1055 temp |= PORT_WKDISC_E | PORT_WKOC_E;
1056 ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);
1057 if (ehci->has_tdi_phy_lpm) {
1058 spin_unlock_irqrestore(&ehci->lock, flags);
1059 msleep(5);
1060 spin_lock_irqsave(&ehci->lock, flags);
1061 temp1 = ehci_readl(ehci, hostpc_reg);
1062 ehci_writel(ehci, temp1 | HOSTPC_PHCD,
1063 hostpc_reg);
1064 temp1 = ehci_readl(ehci, hostpc_reg);
1065 ehci_dbg(ehci, "Port%d phy low pwr mode %s\n",
1066 wIndex, (temp1 & HOSTPC_PHCD) ?
1067 "succeeded" : "failed");
1068 }
1069 if (ehci_has_fsl_susp_errata(ehci)) {
1070
1071 spin_unlock_irqrestore(&ehci->lock, flags);
1072 usleep_range(10000, 20000);
1073 spin_lock_irqsave(&ehci->lock, flags);
1074 }
1075 set_bit(wIndex, &ehci->suspended_ports);
1076 break;
1077 case USB_PORT_FEAT_POWER:
1078 if (HCS_PPC(ehci->hcs_params)) {
1079 spin_unlock_irqrestore(&ehci->lock, flags);
1080 ehci_port_power(ehci, wIndex, true);
1081 spin_lock_irqsave(&ehci->lock, flags);
1082 }
1083 break;
1084 case USB_PORT_FEAT_RESET:
1085 if (temp & (PORT_SUSPEND|PORT_RESUME))
1086 goto error;
1087
1088
1089
1090
1091 if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT
1092 && !ehci_is_TDI(ehci)
1093 && PORT_USB11 (temp)) {
1094 ehci_dbg (ehci,
1095 "port %d low speed --> companion\n",
1096 wIndex + 1);
1097 temp |= PORT_OWNER;
1098 } else {
1099 temp |= PORT_RESET;
1100 temp &= ~PORT_PE;
1101
1102
1103
1104
1105
1106 ehci->reset_done [wIndex] = jiffies
1107 + msecs_to_jiffies (50);
1108
1109
1110
1111
1112
1113 if (ehci_has_fsl_hs_errata(ehci))
1114 temp |= (1 << PORTSC_FSL_PFSC);
1115 }
1116 ehci_writel(ehci, temp, status_reg);
1117 break;
1118
1119
1120
1121
1122
1123
1124
1125 case USB_PORT_FEAT_TEST:
1126#ifdef CONFIG_USB_HCD_TEST_MODE
1127 if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
1128 spin_unlock_irqrestore(&ehci->lock, flags);
1129 retval = ehset_single_step_set_feature(hcd,
1130 wIndex + 1);
1131 spin_lock_irqsave(&ehci->lock, flags);
1132 break;
1133 }
1134#endif
1135 if (!selector || selector > 5)
1136 goto error;
1137 spin_unlock_irqrestore(&ehci->lock, flags);
1138 ehci_quiesce(ehci);
1139 spin_lock_irqsave(&ehci->lock, flags);
1140
1141
1142 while (ports--) {
1143 u32 __iomem *sreg =
1144 &ehci->regs->port_status[ports];
1145
1146 temp = ehci_readl(ehci, sreg) & ~PORT_RWC_BITS;
1147 if (temp & PORT_PE)
1148 ehci_writel(ehci, temp | PORT_SUSPEND,
1149 sreg);
1150 }
1151
1152 spin_unlock_irqrestore(&ehci->lock, flags);
1153 ehci_halt(ehci);
1154 spin_lock_irqsave(&ehci->lock, flags);
1155
1156 temp = ehci_readl(ehci, status_reg);
1157 temp |= selector << 16;
1158 ehci_writel(ehci, temp, status_reg);
1159 break;
1160
1161 default:
1162 goto error;
1163 }
1164 ehci_readl(ehci, &ehci->regs->command);
1165 break;
1166
1167 default:
1168error:
1169
1170 retval = -EPIPE;
1171 }
1172error_exit:
1173 spin_unlock_irqrestore (&ehci->lock, flags);
1174 return retval;
1175}
1176EXPORT_SYMBOL_GPL(ehci_hub_control);
1177
1178static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
1179{
1180 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1181
1182 if (ehci_is_TDI(ehci))
1183 return;
1184 set_owner(ehci, --portnum, PORT_OWNER);
1185}
1186
1187static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
1188{
1189 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1190 u32 __iomem *reg;
1191
1192 if (ehci_is_TDI(ehci))
1193 return 0;
1194 reg = &ehci->regs->port_status[portnum - 1];
1195 return ehci_readl(ehci, reg) & PORT_OWNER;
1196}
1197
1198static int ehci_port_power(struct ehci_hcd *ehci, int portnum, bool enable)
1199{
1200 struct usb_hcd *hcd = ehci_to_hcd(ehci);
1201 u32 __iomem *status_reg = &ehci->regs->port_status[portnum];
1202 u32 temp = ehci_readl(ehci, status_reg) & ~PORT_RWC_BITS;
1203
1204 if (enable)
1205 ehci_writel(ehci, temp | PORT_POWER, status_reg);
1206 else
1207 ehci_writel(ehci, temp & ~PORT_POWER, status_reg);
1208
1209 if (hcd->driver->port_power)
1210 hcd->driver->port_power(hcd, portnum, enable);
1211
1212 return 0;
1213}
1214