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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
45static int persist_enabled_on_companion(struct usb_device *udev, void *unused)
46{
47 return !udev->maxchild && udev->persist_enabled &&
48 udev->bus->root_hub->speed < USB_SPEED_HIGH;
49}
50
51
52
53
54static void ehci_handover_companion_ports(struct ehci_hcd *ehci)
55{
56 u32 __iomem *reg;
57 u32 status;
58 int port;
59 __le32 buf;
60 struct usb_hcd *hcd = ehci_to_hcd(ehci);
61
62 if (!ehci->owned_ports)
63 return;
64
65
66
67
68
69
70
71
72 if (!usb_for_each_dev(NULL, persist_enabled_on_companion))
73 return;
74
75
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 if (!(status & PORT_POWER)) {
82 status |= PORT_POWER;
83 ehci_writel(ehci, status, reg);
84 }
85 }
86 }
87
88
89 msleep(20);
90
91 spin_lock_irq(&ehci->lock);
92 port = HCS_N_PORTS(ehci->hcs_params);
93 while (port--) {
94 if (test_bit(port, &ehci->owned_ports)) {
95 reg = &ehci->regs->port_status[port];
96 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
97
98
99 if (status & PORT_OWNER)
100 clear_bit(port, &ehci->owned_ports);
101 else if (test_bit(port, &ehci->companion_ports))
102 ehci_writel(ehci, status & ~PORT_PE, reg);
103 else {
104 spin_unlock_irq(&ehci->lock);
105 ehci_hub_control(hcd, SetPortFeature,
106 USB_PORT_FEAT_RESET, port + 1,
107 NULL, 0);
108 spin_lock_irq(&ehci->lock);
109 }
110 }
111 }
112 spin_unlock_irq(&ehci->lock);
113
114 if (!ehci->owned_ports)
115 return;
116 msleep(90);
117
118 spin_lock_irq(&ehci->lock);
119 port = HCS_N_PORTS(ehci->hcs_params);
120 while (port--) {
121 if (test_bit(port, &ehci->owned_ports)) {
122 spin_unlock_irq(&ehci->lock);
123 ehci_hub_control(hcd, GetPortStatus,
124 0, port + 1,
125 (char *) &buf, sizeof(buf));
126 spin_lock_irq(&ehci->lock);
127
128
129
130
131
132 reg = &ehci->regs->port_status[port];
133 status = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
134 if (status & PORT_OWNER)
135 ehci_writel(ehci, status | PORT_CSC, reg);
136 else {
137 ehci_dbg(ehci, "failed handover port %d: %x\n",
138 port + 1, status);
139 ehci_writel(ehci, status & ~PORT_PE, reg);
140 }
141 }
142 }
143
144 ehci->owned_ports = 0;
145 spin_unlock_irq(&ehci->lock);
146}
147
148static int ehci_port_change(struct ehci_hcd *ehci)
149{
150 int i = HCS_N_PORTS(ehci->hcs_params);
151
152
153
154 if (ehci_readl(ehci, &ehci->regs->status) & STS_PCD)
155 return 1;
156
157
158
159
160
161
162 while (i--)
163 if (ehci_readl(ehci, &ehci->regs->port_status[i]) & PORT_CSC)
164 return 1;
165
166 return 0;
167}
168
169static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
170 bool suspending, bool do_wakeup)
171{
172 int port;
173 u32 temp;
174
175
176
177
178
179
180 if (!ehci_to_hcd(ehci)->self.root_hub->do_remote_wakeup || do_wakeup)
181 return;
182
183 spin_lock_irq(&ehci->lock);
184
185
186 if (ehci->has_tdi_phy_lpm) {
187 port = HCS_N_PORTS(ehci->hcs_params);
188 while (port--) {
189 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
190
191 temp = ehci_readl(ehci, hostpc_reg);
192 ehci_writel(ehci, temp & ~HOSTPC_PHCD, hostpc_reg);
193 }
194 spin_unlock_irq(&ehci->lock);
195 msleep(5);
196 spin_lock_irq(&ehci->lock);
197 }
198
199 port = HCS_N_PORTS(ehci->hcs_params);
200 while (port--) {
201 u32 __iomem *reg = &ehci->regs->port_status[port];
202 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
203 u32 t2 = t1 & ~PORT_WAKE_BITS;
204
205
206
207
208 if (!suspending) {
209 if (t1 & PORT_CONNECT)
210 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
211 else
212 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
213 }
214 ehci_writel(ehci, t2, reg);
215 }
216
217
218 if (ehci->has_tdi_phy_lpm) {
219 port = HCS_N_PORTS(ehci->hcs_params);
220 while (port--) {
221 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
222
223 temp = ehci_readl(ehci, hostpc_reg);
224 ehci_writel(ehci, temp | HOSTPC_PHCD, hostpc_reg);
225 }
226 }
227
228
229 if (!suspending && ehci_port_change(ehci))
230 usb_hcd_resume_root_hub(ehci_to_hcd(ehci));
231
232 spin_unlock_irq(&ehci->lock);
233}
234
235static int ehci_bus_suspend (struct usb_hcd *hcd)
236{
237 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
238 int port;
239 int mask;
240 int changed;
241 bool fs_idle_delay;
242
243 ehci_dbg(ehci, "suspend root hub\n");
244
245 if (time_before (jiffies, ehci->next_statechange))
246 msleep(5);
247
248
249 ehci_quiesce(ehci);
250
251 spin_lock_irq (&ehci->lock);
252 if (ehci->rh_state < EHCI_RH_RUNNING)
253 goto done;
254
255
256
257
258
259
260 if (hcd->self.root_hub->do_remote_wakeup) {
261 if (ehci->resuming_ports) {
262 spin_unlock_irq(&ehci->lock);
263 ehci_dbg(ehci, "suspend failed because a port is resuming\n");
264 return -EBUSY;
265 }
266 }
267
268
269
270
271
272
273 ehci->bus_suspended = 0;
274 ehci->owned_ports = 0;
275 changed = 0;
276 fs_idle_delay = false;
277 port = HCS_N_PORTS(ehci->hcs_params);
278 while (port--) {
279 u32 __iomem *reg = &ehci->regs->port_status [port];
280 u32 t1 = ehci_readl(ehci, reg) & ~PORT_RWC_BITS;
281 u32 t2 = t1 & ~PORT_WAKE_BITS;
282
283
284 if (t1 & PORT_OWNER)
285 set_bit(port, &ehci->owned_ports);
286 else if ((t1 & PORT_PE) && !(t1 & PORT_SUSPEND)) {
287 t2 |= PORT_SUSPEND;
288 set_bit(port, &ehci->bus_suspended);
289 }
290
291
292 if (hcd->self.root_hub->do_remote_wakeup) {
293
294
295
296
297
298 if (t1 & PORT_CONNECT)
299 t2 |= PORT_WKOC_E | PORT_WKDISC_E;
300 else
301 t2 |= PORT_WKOC_E | PORT_WKCONN_E;
302 }
303
304 if (t1 != t2) {
305
306
307
308
309
310
311 if ((t2 & PORT_WKDISC_E) &&
312 ehci_port_speed(ehci, t2) ==
313 USB_PORT_STAT_HIGH_SPEED)
314 fs_idle_delay = true;
315 ehci_writel(ehci, t2, reg);
316 changed = 1;
317 }
318 }
319 spin_unlock_irq(&ehci->lock);
320
321 if ((changed && ehci->has_tdi_phy_lpm) || fs_idle_delay) {
322
323
324
325
326 usleep_range(5000, 5500);
327 }
328
329 if (changed && ehci->has_tdi_phy_lpm) {
330 spin_lock_irq(&ehci->lock);
331 port = HCS_N_PORTS(ehci->hcs_params);
332 while (port--) {
333 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[port];
334 u32 t3;
335
336 t3 = ehci_readl(ehci, hostpc_reg);
337 ehci_writel(ehci, t3 | HOSTPC_PHCD, hostpc_reg);
338 t3 = ehci_readl(ehci, hostpc_reg);
339 ehci_dbg(ehci, "Port %d phy low-power mode %s\n",
340 port, (t3 & HOSTPC_PHCD) ?
341 "succeeded" : "failed");
342 }
343 spin_unlock_irq(&ehci->lock);
344 }
345
346
347 if (ehci->bus_suspended)
348 udelay(150);
349
350
351 ehci_halt (ehci);
352
353 spin_lock_irq(&ehci->lock);
354 if (ehci->enabled_hrtimer_events & BIT(EHCI_HRTIMER_POLL_DEAD))
355 ehci_handle_controller_death(ehci);
356 if (ehci->rh_state != EHCI_RH_RUNNING)
357 goto done;
358 ehci->rh_state = EHCI_RH_SUSPENDED;
359
360 end_unlink_async(ehci);
361 unlink_empty_async_suspended(ehci);
362 ehci_handle_start_intr_unlinks(ehci);
363 ehci_handle_intr_unlinks(ehci);
364 end_free_itds(ehci);
365
366
367 mask = INTR_MASK;
368 if (!hcd->self.root_hub->do_remote_wakeup)
369 mask &= ~STS_PCD;
370 ehci_writel(ehci, mask, &ehci->regs->intr_enable);
371 ehci_readl(ehci, &ehci->regs->intr_enable);
372
373 done:
374 ehci->next_statechange = jiffies + msecs_to_jiffies(10);
375 ehci->enabled_hrtimer_events = 0;
376 ehci->next_hrtimer_event = EHCI_HRTIMER_NO_EVENT;
377 spin_unlock_irq (&ehci->lock);
378
379 hrtimer_cancel(&ehci->hrtimer);
380 return 0;
381}
382
383
384
385static int ehci_bus_resume (struct usb_hcd *hcd)
386{
387 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
388 u32 temp;
389 u32 power_okay;
390 int i;
391 unsigned long resume_needed = 0;
392
393 if (time_before (jiffies, ehci->next_statechange))
394 msleep(5);
395 spin_lock_irq (&ehci->lock);
396 if (!HCD_HW_ACCESSIBLE(hcd) || ehci->shutdown)
397 goto shutdown;
398
399 if (unlikely(ehci->debug)) {
400 if (!dbgp_reset_prep(hcd))
401 ehci->debug = NULL;
402 else
403 dbgp_external_startup(hcd);
404 }
405
406
407
408
409
410
411
412 power_okay = ehci_readl(ehci, &ehci->regs->intr_enable);
413 ehci_dbg(ehci, "resume root hub%s\n",
414 power_okay ? "" : " after power loss");
415
416
417
418
419 ehci_writel(ehci, 0, &ehci->regs->intr_enable);
420
421
422 ehci_writel(ehci, 0, &ehci->regs->segment);
423 ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list);
424 ehci_writel(ehci, (u32) ehci->async->qh_dma, &ehci->regs->async_next);
425
426
427 ehci->command |= CMD_RUN;
428 ehci_writel(ehci, ehci->command, &ehci->regs->command);
429 ehci->rh_state = EHCI_RH_RUNNING;
430
431
432
433
434
435
436 i = HCS_N_PORTS(ehci->hcs_params);
437 while (i--) {
438 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
439 if ((temp & PORT_PE) &&
440 !(temp & (PORT_SUSPEND | PORT_RESUME))) {
441 ehci_dbg(ehci, "Port status(0x%x) is wrong\n", temp);
442 spin_unlock_irq(&ehci->lock);
443 msleep(8);
444 spin_lock_irq(&ehci->lock);
445 break;
446 }
447 }
448
449 if (ehci->shutdown)
450 goto shutdown;
451
452
453 if (ehci->bus_suspended && ehci->has_tdi_phy_lpm) {
454 i = HCS_N_PORTS(ehci->hcs_params);
455 while (i--) {
456 if (test_bit(i, &ehci->bus_suspended)) {
457 u32 __iomem *hostpc_reg =
458 &ehci->regs->hostpc[i];
459
460 temp = ehci_readl(ehci, hostpc_reg);
461 ehci_writel(ehci, temp & ~HOSTPC_PHCD,
462 hostpc_reg);
463 }
464 }
465 spin_unlock_irq(&ehci->lock);
466 msleep(5);
467 spin_lock_irq(&ehci->lock);
468 if (ehci->shutdown)
469 goto shutdown;
470 }
471
472
473 i = HCS_N_PORTS (ehci->hcs_params);
474 while (i--) {
475 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
476 temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
477 if (test_bit(i, &ehci->bus_suspended) &&
478 (temp & PORT_SUSPEND)) {
479 temp |= PORT_RESUME;
480 set_bit(i, &resume_needed);
481 }
482 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
483 }
484
485
486 if (resume_needed) {
487 spin_unlock_irq(&ehci->lock);
488 msleep(20);
489 spin_lock_irq(&ehci->lock);
490 if (ehci->shutdown)
491 goto shutdown;
492 }
493
494 i = HCS_N_PORTS (ehci->hcs_params);
495 while (i--) {
496 temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
497 if (test_bit(i, &resume_needed)) {
498 temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
499 ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
500 }
501 }
502
503 ehci->next_statechange = jiffies + msecs_to_jiffies(5);
504 spin_unlock_irq(&ehci->lock);
505
506 ehci_handover_companion_ports(ehci);
507
508
509 spin_lock_irq(&ehci->lock);
510 if (ehci->shutdown)
511 goto shutdown;
512 ehci_writel(ehci, INTR_MASK, &ehci->regs->intr_enable);
513 (void) ehci_readl(ehci, &ehci->regs->intr_enable);
514 spin_unlock_irq(&ehci->lock);
515
516 return 0;
517
518 shutdown:
519 spin_unlock_irq(&ehci->lock);
520 return -ESHUTDOWN;
521}
522
523#else
524
525#define ehci_bus_suspend NULL
526#define ehci_bus_resume NULL
527
528#endif
529
530
531
532
533
534
535static void set_owner(struct ehci_hcd *ehci, int portnum, int new_owner)
536{
537 u32 __iomem *status_reg;
538 u32 port_status;
539 int try;
540
541 status_reg = &ehci->regs->port_status[portnum];
542
543
544
545
546
547
548 for (try = 4; try > 0; --try) {
549 spin_lock_irq(&ehci->lock);
550 port_status = ehci_readl(ehci, status_reg);
551 if ((port_status & PORT_OWNER) == new_owner
552 || (port_status & (PORT_OWNER | PORT_CONNECT))
553 == 0)
554 try = 0;
555 else {
556 port_status ^= PORT_OWNER;
557 port_status &= ~(PORT_PE | PORT_RWC_BITS);
558 ehci_writel(ehci, port_status, status_reg);
559 }
560 spin_unlock_irq(&ehci->lock);
561 if (try > 1)
562 msleep(5);
563 }
564}
565
566
567
568static int check_reset_complete (
569 struct ehci_hcd *ehci,
570 int index,
571 u32 __iomem *status_reg,
572 int port_status
573) {
574 if (!(port_status & PORT_CONNECT))
575 return port_status;
576
577
578 if (!(port_status & PORT_PE)) {
579
580
581 if (ehci_is_TDI(ehci)) {
582 ehci_dbg (ehci,
583 "Failed to enable port %d on root hub TT\n",
584 index+1);
585 return port_status;
586 }
587
588 ehci_dbg (ehci, "port %d full speed --> companion\n",
589 index + 1);
590
591
592 port_status |= PORT_OWNER;
593 port_status &= ~PORT_RWC_BITS;
594 ehci_writel(ehci, port_status, status_reg);
595
596
597 if (ehci->has_amcc_usb23)
598 set_ohci_hcfs(ehci, 1);
599 } else {
600 ehci_dbg(ehci, "port %d reset complete, port enabled\n",
601 index + 1);
602
603 if (ehci->has_amcc_usb23)
604 set_ohci_hcfs(ehci, 0);
605 }
606
607 return port_status;
608}
609
610
611
612
613
614
615static int
616ehci_hub_status_data (struct usb_hcd *hcd, char *buf)
617{
618 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
619 u32 temp, status;
620 u32 mask;
621 int ports, i, retval = 1;
622 unsigned long flags;
623 u32 ppcd = ~0;
624
625
626 buf [0] = 0;
627 ports = HCS_N_PORTS (ehci->hcs_params);
628 if (ports > 7) {
629 buf [1] = 0;
630 retval++;
631 }
632
633
634
635
636 status = ehci->resuming_ports;
637
638
639
640
641
642
643
644 if (!ignore_oc)
645 mask = PORT_CSC | PORT_PEC | PORT_OCC;
646 else
647 mask = PORT_CSC | PORT_PEC;
648
649
650
651
652
653 spin_lock_irqsave (&ehci->lock, flags);
654
655
656 if (ehci->has_ppcd)
657 ppcd = ehci_readl(ehci, &ehci->regs->status) >> 16;
658
659 for (i = 0; i < ports; i++) {
660
661 if (ppcd & (1 << i))
662 temp = ehci_readl(ehci, &ehci->regs->port_status[i]);
663 else
664 temp = 0;
665
666
667
668
669
670
671
672
673 if ((temp & mask) != 0 || test_bit(i, &ehci->port_c_suspend)
674 || (ehci->reset_done[i] && time_after_eq(
675 jiffies, ehci->reset_done[i]))) {
676 if (i < 7)
677 buf [0] |= 1 << (i + 1);
678 else
679 buf [1] |= 1 << (i - 7);
680 status = STS_PCD;
681 }
682 }
683
684
685 if (ehci->resuming_ports)
686 mod_timer(&hcd->rh_timer, jiffies + msecs_to_jiffies(25));
687
688 spin_unlock_irqrestore (&ehci->lock, flags);
689 return status ? retval : 0;
690}
691
692
693
694static void
695ehci_hub_descriptor (
696 struct ehci_hcd *ehci,
697 struct usb_hub_descriptor *desc
698) {
699 int ports = HCS_N_PORTS (ehci->hcs_params);
700 u16 temp;
701
702 desc->bDescriptorType = 0x29;
703 desc->bPwrOn2PwrGood = 10;
704 desc->bHubContrCurrent = 0;
705
706 desc->bNbrPorts = ports;
707 temp = 1 + (ports / 8);
708 desc->bDescLength = 7 + 2 * temp;
709
710
711 memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
712 memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
713
714 temp = 0x0008;
715 if (HCS_PPC (ehci->hcs_params))
716 temp |= 0x0001;
717 else
718 temp |= 0x0002;
719#if 0
720
721 if (HCS_INDICATOR (ehci->hcs_params))
722 temp |= 0x0080;
723#endif
724 desc->wHubCharacteristics = cpu_to_le16(temp);
725}
726
727
728#ifdef CONFIG_USB_HCD_TEST_MODE
729
730#define EHSET_TEST_SINGLE_STEP_SET_FEATURE 0x06
731
732static void usb_ehset_completion(struct urb *urb)
733{
734 struct completion *done = urb->context;
735
736 complete(done);
737}
738static int submit_single_step_set_feature(
739 struct usb_hcd *hcd,
740 struct urb *urb,
741 int is_setup
742);
743
744
745
746
747
748
749
750static struct urb *request_single_step_set_feature_urb(
751 struct usb_device *udev,
752 void *dr,
753 void *buf,
754 struct completion *done
755) {
756 struct urb *urb;
757 struct usb_hcd *hcd = bus_to_hcd(udev->bus);
758 struct usb_host_endpoint *ep;
759
760 urb = usb_alloc_urb(0, GFP_KERNEL);
761 if (!urb)
762 return NULL;
763
764 urb->pipe = usb_rcvctrlpipe(udev, 0);
765 ep = (usb_pipein(urb->pipe) ? udev->ep_in : udev->ep_out)
766 [usb_pipeendpoint(urb->pipe)];
767 if (!ep) {
768 usb_free_urb(urb);
769 return NULL;
770 }
771
772 urb->ep = ep;
773 urb->dev = udev;
774 urb->setup_packet = (void *)dr;
775 urb->transfer_buffer = buf;
776 urb->transfer_buffer_length = USB_DT_DEVICE_SIZE;
777 urb->complete = usb_ehset_completion;
778 urb->status = -EINPROGRESS;
779 urb->actual_length = 0;
780 urb->transfer_flags = URB_DIR_IN;
781 usb_get_urb(urb);
782 atomic_inc(&urb->use_count);
783 atomic_inc(&urb->dev->urbnum);
784 urb->setup_dma = dma_map_single(
785 hcd->self.controller,
786 urb->setup_packet,
787 sizeof(struct usb_ctrlrequest),
788 DMA_TO_DEVICE);
789 urb->transfer_dma = dma_map_single(
790 hcd->self.controller,
791 urb->transfer_buffer,
792 urb->transfer_buffer_length,
793 DMA_FROM_DEVICE);
794 urb->context = done;
795 return urb;
796}
797
798static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
799{
800 int retval = -ENOMEM;
801 struct usb_ctrlrequest *dr;
802 struct urb *urb;
803 struct usb_device *udev;
804 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
805 struct usb_device_descriptor *buf;
806 DECLARE_COMPLETION_ONSTACK(done);
807
808
809 udev = usb_hub_find_child(hcd->self.root_hub, port);
810 if (!udev) {
811 ehci_err(ehci, "No device attached to the RootHub\n");
812 return -ENODEV;
813 }
814 buf = kmalloc(USB_DT_DEVICE_SIZE, GFP_KERNEL);
815 if (!buf)
816 return -ENOMEM;
817
818 dr = kmalloc(sizeof(struct usb_ctrlrequest), GFP_KERNEL);
819 if (!dr) {
820 kfree(buf);
821 return -ENOMEM;
822 }
823
824
825 dr->bRequestType = USB_DIR_IN;
826 dr->bRequest = USB_REQ_GET_DESCRIPTOR;
827 dr->wValue = cpu_to_le16(USB_DT_DEVICE << 8);
828 dr->wIndex = 0;
829 dr->wLength = cpu_to_le16(USB_DT_DEVICE_SIZE);
830 urb = request_single_step_set_feature_urb(udev, dr, buf, &done);
831 if (!urb)
832 goto cleanup;
833
834
835 retval = submit_single_step_set_feature(hcd, urb, 1);
836 if (retval)
837 goto out1;
838 if (!wait_for_completion_timeout(&done, msecs_to_jiffies(2000))) {
839 usb_kill_urb(urb);
840 retval = -ETIMEDOUT;
841 ehci_err(ehci, "%s SETUP stage timed out on ep0\n", __func__);
842 goto out1;
843 }
844 msleep(15 * 1000);
845
846
847 urb->status = -EINPROGRESS;
848 usb_get_urb(urb);
849 atomic_inc(&urb->use_count);
850 atomic_inc(&urb->dev->urbnum);
851 retval = submit_single_step_set_feature(hcd, urb, 0);
852 if (!retval && !wait_for_completion_timeout(&done,
853 msecs_to_jiffies(2000))) {
854 usb_kill_urb(urb);
855 retval = -ETIMEDOUT;
856 ehci_err(ehci, "%s IN stage timed out on ep0\n", __func__);
857 }
858out1:
859 usb_free_urb(urb);
860cleanup:
861 kfree(dr);
862 kfree(buf);
863 return retval;
864}
865#endif
866
867
868static int ehci_hub_control (
869 struct usb_hcd *hcd,
870 u16 typeReq,
871 u16 wValue,
872 u16 wIndex,
873 char *buf,
874 u16 wLength
875) {
876 struct ehci_hcd *ehci = hcd_to_ehci (hcd);
877 int ports = HCS_N_PORTS (ehci->hcs_params);
878 u32 __iomem *status_reg = &ehci->regs->port_status[
879 (wIndex & 0xff) - 1];
880 u32 __iomem *hostpc_reg = &ehci->regs->hostpc[(wIndex & 0xff) - 1];
881 u32 temp, temp1, status;
882 unsigned long flags;
883 int retval = 0;
884 unsigned selector;
885
886
887
888
889
890
891
892
893 spin_lock_irqsave (&ehci->lock, flags);
894 switch (typeReq) {
895 case ClearHubFeature:
896 switch (wValue) {
897 case C_HUB_LOCAL_POWER:
898 case C_HUB_OVER_CURRENT:
899
900 break;
901 default:
902 goto error;
903 }
904 break;
905 case ClearPortFeature:
906 if (!wIndex || wIndex > ports)
907 goto error;
908 wIndex--;
909 temp = ehci_readl(ehci, status_reg);
910 temp &= ~PORT_RWC_BITS;
911
912
913
914
915
916
917
918
919 switch (wValue) {
920 case USB_PORT_FEAT_ENABLE:
921 ehci_writel(ehci, temp & ~PORT_PE, status_reg);
922 break;
923 case USB_PORT_FEAT_C_ENABLE:
924 ehci_writel(ehci, temp | PORT_PEC, status_reg);
925 break;
926 case USB_PORT_FEAT_SUSPEND:
927 if (temp & PORT_RESET)
928 goto error;
929 if (ehci->no_selective_suspend)
930 break;
931#ifdef CONFIG_USB_OTG
932 if ((hcd->self.otg_port == (wIndex + 1))
933 && hcd->self.b_hnp_enable) {
934 otg_start_hnp(hcd->phy->otg);
935 break;
936 }
937#endif
938 if (!(temp & PORT_SUSPEND))
939 break;
940 if ((temp & PORT_PE) == 0)
941 goto error;
942
943
944 if (ehci->has_tdi_phy_lpm) {
945 temp1 = ehci_readl(ehci, hostpc_reg);
946 ehci_writel(ehci, temp1 & ~HOSTPC_PHCD,
947 hostpc_reg);
948 spin_unlock_irqrestore(&ehci->lock, flags);
949 msleep(5);
950 spin_lock_irqsave(&ehci->lock, flags);
951 }
952
953 temp &= ~PORT_WAKE_BITS;
954 ehci_writel(ehci, temp | PORT_RESUME, status_reg);
955 ehci->reset_done[wIndex] = jiffies
956 + msecs_to_jiffies(20);
957 set_bit(wIndex, &ehci->resuming_ports);
958 usb_hcd_start_port_resume(&hcd->self, wIndex);
959 break;
960 case USB_PORT_FEAT_C_SUSPEND:
961 clear_bit(wIndex, &ehci->port_c_suspend);
962 break;
963 case USB_PORT_FEAT_POWER:
964 if (HCS_PPC (ehci->hcs_params))
965 ehci_writel(ehci, temp & ~PORT_POWER,
966 status_reg);
967 break;
968 case USB_PORT_FEAT_C_CONNECTION:
969 ehci_writel(ehci, temp | PORT_CSC, status_reg);
970 break;
971 case USB_PORT_FEAT_C_OVER_CURRENT:
972 ehci_writel(ehci, temp | PORT_OCC, status_reg);
973 break;
974 case USB_PORT_FEAT_C_RESET:
975
976 break;
977 default:
978 goto error;
979 }
980 ehci_readl(ehci, &ehci->regs->command);
981 break;
982 case GetHubDescriptor:
983 ehci_hub_descriptor (ehci, (struct usb_hub_descriptor *)
984 buf);
985 break;
986 case GetHubStatus:
987
988 memset (buf, 0, 4);
989
990 break;
991 case GetPortStatus:
992 if (!wIndex || wIndex > ports)
993 goto error;
994 wIndex--;
995 status = 0;
996 temp = ehci_readl(ehci, status_reg);
997
998
999 if (temp & PORT_CSC)
1000 status |= USB_PORT_STAT_C_CONNECTION << 16;
1001 if (temp & PORT_PEC)
1002 status |= USB_PORT_STAT_C_ENABLE << 16;
1003
1004 if ((temp & PORT_OCC) && !ignore_oc){
1005 status |= USB_PORT_STAT_C_OVERCURRENT << 16;
1006
1007
1008
1009
1010
1011
1012
1013
1014 if (((temp & PORT_OC) || (ehci->need_oc_pp_cycle))
1015 && HCS_PPC(ehci->hcs_params)) {
1016 ehci_writel(ehci,
1017 temp & ~(PORT_RWC_BITS | PORT_POWER),
1018 status_reg);
1019 temp = ehci_readl(ehci, status_reg);
1020 }
1021 }
1022
1023
1024 if (!ehci->reset_done[wIndex]) {
1025
1026
1027 if (temp & PORT_RESUME) {
1028
1029 ehci->reset_done[wIndex] = jiffies
1030 + msecs_to_jiffies(20);
1031 usb_hcd_start_port_resume(&hcd->self, wIndex);
1032 set_bit(wIndex, &ehci->resuming_ports);
1033
1034 mod_timer(&ehci_to_hcd(ehci)->rh_timer,
1035 ehci->reset_done[wIndex]);
1036 }
1037
1038
1039 } else if (!time_after_eq(jiffies, ehci->reset_done[wIndex])) {
1040 ;
1041
1042
1043 } else if (test_bit(wIndex, &ehci->resuming_ports)) {
1044 clear_bit(wIndex, &ehci->suspended_ports);
1045 set_bit(wIndex, &ehci->port_c_suspend);
1046 ehci->reset_done[wIndex] = 0;
1047 usb_hcd_end_port_resume(&hcd->self, wIndex);
1048
1049
1050 temp &= ~(PORT_RWC_BITS | PORT_SUSPEND | PORT_RESUME);
1051 ehci_writel(ehci, temp, status_reg);
1052 clear_bit(wIndex, &ehci->resuming_ports);
1053 retval = ehci_handshake(ehci, status_reg,
1054 PORT_RESUME, 0, 2000 );
1055 if (retval != 0) {
1056 ehci_err(ehci, "port %d resume error %d\n",
1057 wIndex + 1, retval);
1058 goto error;
1059 }
1060 temp = ehci_readl(ehci, status_reg);
1061
1062
1063 } else {
1064 status |= USB_PORT_STAT_C_RESET << 16;
1065 ehci->reset_done [wIndex] = 0;
1066
1067
1068 ehci_writel(ehci, temp & ~(PORT_RWC_BITS | PORT_RESET),
1069 status_reg);
1070
1071
1072
1073 retval = ehci_handshake(ehci, status_reg,
1074 PORT_RESET, 0, 1000);
1075 if (retval != 0) {
1076 ehci_err (ehci, "port %d reset error %d\n",
1077 wIndex + 1, retval);
1078 goto error;
1079 }
1080
1081
1082 temp = check_reset_complete (ehci, wIndex, status_reg,
1083 ehci_readl(ehci, status_reg));
1084 }
1085
1086
1087 if ((temp & PORT_CONNECT) &&
1088 test_bit(wIndex, &ehci->companion_ports)) {
1089 temp &= ~PORT_RWC_BITS;
1090 temp |= PORT_OWNER;
1091 ehci_writel(ehci, temp, status_reg);
1092 ehci_dbg(ehci, "port %d --> companion\n", wIndex + 1);
1093 temp = ehci_readl(ehci, status_reg);
1094 }
1095
1096
1097
1098
1099
1100
1101
1102 if (temp & PORT_CONNECT) {
1103 status |= USB_PORT_STAT_CONNECTION;
1104
1105 if (ehci->has_hostpc) {
1106 temp1 = ehci_readl(ehci, hostpc_reg);
1107 status |= ehci_port_speed(ehci, temp1);
1108 } else
1109 status |= ehci_port_speed(ehci, temp);
1110 }
1111 if (temp & PORT_PE)
1112 status |= USB_PORT_STAT_ENABLE;
1113
1114
1115 if (temp & (PORT_SUSPEND|PORT_RESUME)) {
1116 status |= USB_PORT_STAT_SUSPEND;
1117 } else if (test_bit(wIndex, &ehci->suspended_ports)) {
1118 clear_bit(wIndex, &ehci->suspended_ports);
1119 clear_bit(wIndex, &ehci->resuming_ports);
1120 ehci->reset_done[wIndex] = 0;
1121 if (temp & PORT_PE)
1122 set_bit(wIndex, &ehci->port_c_suspend);
1123 usb_hcd_end_port_resume(&hcd->self, wIndex);
1124 }
1125
1126 if (temp & PORT_OC)
1127 status |= USB_PORT_STAT_OVERCURRENT;
1128 if (temp & PORT_RESET)
1129 status |= USB_PORT_STAT_RESET;
1130 if (temp & PORT_POWER)
1131 status |= USB_PORT_STAT_POWER;
1132 if (test_bit(wIndex, &ehci->port_c_suspend))
1133 status |= USB_PORT_STAT_C_SUSPEND << 16;
1134
1135 if (status & ~0xffff)
1136 dbg_port(ehci, "GetStatus", wIndex + 1, temp);
1137 put_unaligned_le32(status, buf);
1138 break;
1139 case SetHubFeature:
1140 switch (wValue) {
1141 case C_HUB_LOCAL_POWER:
1142 case C_HUB_OVER_CURRENT:
1143
1144 break;
1145 default:
1146 goto error;
1147 }
1148 break;
1149 case SetPortFeature:
1150 selector = wIndex >> 8;
1151 wIndex &= 0xff;
1152 if (unlikely(ehci->debug)) {
1153
1154
1155 if (wIndex == HCS_DEBUG_PORT(ehci->hcs_params) &&
1156 (readl(&ehci->debug->control) & DBGP_ENABLED)) {
1157 retval = -ENODEV;
1158 goto error_exit;
1159 }
1160 }
1161 if (!wIndex || wIndex > ports)
1162 goto error;
1163 wIndex--;
1164 temp = ehci_readl(ehci, status_reg);
1165 if (temp & PORT_OWNER)
1166 break;
1167
1168 temp &= ~PORT_RWC_BITS;
1169 switch (wValue) {
1170 case USB_PORT_FEAT_SUSPEND:
1171 if (ehci->no_selective_suspend)
1172 break;
1173 if ((temp & PORT_PE) == 0
1174 || (temp & PORT_RESET) != 0)
1175 goto error;
1176
1177
1178
1179
1180
1181 temp &= ~PORT_WKCONN_E;
1182 temp |= PORT_WKDISC_E | PORT_WKOC_E;
1183 ehci_writel(ehci, temp | PORT_SUSPEND, status_reg);
1184 if (ehci->has_tdi_phy_lpm) {
1185 spin_unlock_irqrestore(&ehci->lock, flags);
1186 msleep(5);
1187 spin_lock_irqsave(&ehci->lock, flags);
1188 temp1 = ehci_readl(ehci, hostpc_reg);
1189 ehci_writel(ehci, temp1 | HOSTPC_PHCD,
1190 hostpc_reg);
1191 temp1 = ehci_readl(ehci, hostpc_reg);
1192 ehci_dbg(ehci, "Port%d phy low pwr mode %s\n",
1193 wIndex, (temp1 & HOSTPC_PHCD) ?
1194 "succeeded" : "failed");
1195 }
1196 set_bit(wIndex, &ehci->suspended_ports);
1197 break;
1198 case USB_PORT_FEAT_POWER:
1199 if (HCS_PPC (ehci->hcs_params))
1200 ehci_writel(ehci, temp | PORT_POWER,
1201 status_reg);
1202 break;
1203 case USB_PORT_FEAT_RESET:
1204 if (temp & (PORT_SUSPEND|PORT_RESUME))
1205 goto error;
1206
1207
1208
1209
1210 if ((temp & (PORT_PE|PORT_CONNECT)) == PORT_CONNECT
1211 && !ehci_is_TDI(ehci)
1212 && PORT_USB11 (temp)) {
1213 ehci_dbg (ehci,
1214 "port %d low speed --> companion\n",
1215 wIndex + 1);
1216 temp |= PORT_OWNER;
1217 } else {
1218 temp |= PORT_RESET;
1219 temp &= ~PORT_PE;
1220
1221
1222
1223
1224
1225 ehci->reset_done [wIndex] = jiffies
1226 + msecs_to_jiffies (50);
1227 }
1228 ehci_writel(ehci, temp, status_reg);
1229 break;
1230
1231
1232
1233
1234
1235
1236
1237 case USB_PORT_FEAT_TEST:
1238#ifdef CONFIG_USB_HCD_TEST_MODE
1239 if (selector == EHSET_TEST_SINGLE_STEP_SET_FEATURE) {
1240 spin_unlock_irqrestore(&ehci->lock, flags);
1241 retval = ehset_single_step_set_feature(hcd,
1242 wIndex);
1243 spin_lock_irqsave(&ehci->lock, flags);
1244 break;
1245 }
1246#endif
1247 if (!selector || selector > 5)
1248 goto error;
1249 spin_unlock_irqrestore(&ehci->lock, flags);
1250 ehci_quiesce(ehci);
1251 spin_lock_irqsave(&ehci->lock, flags);
1252
1253
1254 while (ports--) {
1255 u32 __iomem *sreg =
1256 &ehci->regs->port_status[ports];
1257
1258 temp = ehci_readl(ehci, sreg) & ~PORT_RWC_BITS;
1259 if (temp & PORT_PE)
1260 ehci_writel(ehci, temp | PORT_SUSPEND,
1261 sreg);
1262 }
1263
1264 spin_unlock_irqrestore(&ehci->lock, flags);
1265 ehci_halt(ehci);
1266 spin_lock_irqsave(&ehci->lock, flags);
1267
1268 temp = ehci_readl(ehci, status_reg);
1269 temp |= selector << 16;
1270 ehci_writel(ehci, temp, status_reg);
1271 break;
1272
1273 default:
1274 goto error;
1275 }
1276 ehci_readl(ehci, &ehci->regs->command);
1277 break;
1278
1279 default:
1280error:
1281
1282 retval = -EPIPE;
1283 }
1284error_exit:
1285 spin_unlock_irqrestore (&ehci->lock, flags);
1286 return retval;
1287}
1288
1289static void ehci_relinquish_port(struct usb_hcd *hcd, int portnum)
1290{
1291 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1292
1293 if (ehci_is_TDI(ehci))
1294 return;
1295 set_owner(ehci, --portnum, PORT_OWNER);
1296}
1297
1298static int ehci_port_handed_over(struct usb_hcd *hcd, int portnum)
1299{
1300 struct ehci_hcd *ehci = hcd_to_ehci(hcd);
1301 u32 __iomem *reg;
1302
1303 if (ehci_is_TDI(ehci))
1304 return 0;
1305 reg = &ehci->regs->port_status[portnum - 1];
1306 return ehci_readl(ehci, reg) & PORT_OWNER;
1307}
1308