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24#include <common.h>
25#include <command.h>
26#include <dm.h>
27#include <errno.h>
28#include <memalign.h>
29#include <asm/processor.h>
30#include <asm/unaligned.h>
31#include <linux/ctype.h>
32#include <linux/list.h>
33#include <asm/byteorder.h>
34#ifdef CONFIG_SANDBOX
35#include <asm/state.h>
36#endif
37#include <asm/unaligned.h>
38
39#include <usb.h>
40
41#define USB_BUFSIZ 512
42
43#define HUB_SHORT_RESET_TIME 20
44#define HUB_LONG_RESET_TIME 200
45
46#define PORT_OVERCURRENT_MAX_SCAN_COUNT 3
47
48struct usb_device_scan {
49 struct usb_device *dev;
50 struct usb_hub_device *hub;
51 int port;
52 struct list_head list;
53};
54
55static LIST_HEAD(usb_scan_list);
56
57__weak void usb_hub_reset_devices(struct usb_hub_device *hub, int port)
58{
59 return;
60}
61
62static inline bool usb_hub_is_superspeed(struct usb_device *hdev)
63{
64 return hdev->descriptor.bDeviceProtocol == 3;
65}
66
67#if CONFIG_IS_ENABLED(DM_USB)
68bool usb_hub_is_root_hub(struct udevice *hub)
69{
70 if (device_get_uclass_id(hub->parent) != UCLASS_USB_HUB)
71 return true;
72
73 return false;
74}
75
76static int usb_set_hub_depth(struct usb_device *dev, int depth)
77{
78 if (depth < 0 || depth > 4)
79 return -EINVAL;
80
81 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
82 USB_REQ_SET_HUB_DEPTH, USB_DIR_OUT | USB_RT_HUB,
83 depth, 0, NULL, 0, USB_CNTL_TIMEOUT);
84}
85#endif
86
87static int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size)
88{
89 unsigned short dtype = USB_DT_HUB;
90
91 if (usb_hub_is_superspeed(dev))
92 dtype = USB_DT_SS_HUB;
93
94 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
95 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB,
96 dtype << 8, 0, data, size, USB_CNTL_TIMEOUT);
97}
98
99static int usb_clear_port_feature(struct usb_device *dev, int port, int feature)
100{
101 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
102 USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature,
103 port, NULL, 0, USB_CNTL_TIMEOUT);
104}
105
106static int usb_set_port_feature(struct usb_device *dev, int port, int feature)
107{
108 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
109 USB_REQ_SET_FEATURE, USB_RT_PORT, feature,
110 port, NULL, 0, USB_CNTL_TIMEOUT);
111}
112
113static int usb_get_hub_status(struct usb_device *dev, void *data)
114{
115 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
116 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0,
117 data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT);
118}
119
120int usb_get_port_status(struct usb_device *dev, int port, void *data)
121{
122 int ret;
123
124 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
125 USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port,
126 data, sizeof(struct usb_port_status), USB_CNTL_TIMEOUT);
127
128#if CONFIG_IS_ENABLED(DM_USB)
129 if (ret < 0)
130 return ret;
131
132
133
134
135
136
137
138
139
140
141 if (!usb_hub_is_root_hub(dev->dev) && usb_hub_is_superspeed(dev)) {
142 struct usb_port_status *status = (struct usb_port_status *)data;
143 u16 tmp = (status->wPortStatus) & USB_SS_PORT_STAT_MASK;
144
145 if (status->wPortStatus & USB_SS_PORT_STAT_POWER)
146 tmp |= USB_PORT_STAT_POWER;
147 if ((status->wPortStatus & USB_SS_PORT_STAT_SPEED) ==
148 USB_SS_PORT_STAT_SPEED_5GBPS)
149 tmp |= USB_PORT_STAT_SUPER_SPEED;
150
151 status->wPortStatus = tmp;
152 }
153#endif
154
155 return ret;
156}
157
158
159static void usb_hub_power_on(struct usb_hub_device *hub)
160{
161 int i;
162 struct usb_device *dev;
163 unsigned pgood_delay = hub->desc.bPwrOn2PwrGood * 2;
164 const char *env;
165
166 dev = hub->pusb_dev;
167
168 debug("enabling power on all ports\n");
169 for (i = 0; i < dev->maxchild; i++) {
170 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
171 debug("port %d returns %lX\n", i + 1, dev->status);
172 }
173
174#ifdef CONFIG_SANDBOX
175
176
177
178
179 if (state_get_skip_delays())
180 return;
181#endif
182
183
184
185
186
187
188
189 env = env_get("usb_pgood_delay");
190 if (env)
191 pgood_delay = max(pgood_delay,
192 (unsigned)simple_strtol(env, NULL, 0));
193 debug("pgood_delay=%dms\n", pgood_delay);
194
195
196
197
198
199 hub->query_delay = get_timer(0) + max(100, (int)pgood_delay);
200
201
202
203
204
205
206 hub->connect_timeout = hub->query_delay + 1000;
207 debug("devnum=%d poweron: query_delay=%d connect_timeout=%d\n",
208 dev->devnum, max(100, (int)pgood_delay),
209 max(100, (int)pgood_delay) + 1000);
210}
211
212#if !CONFIG_IS_ENABLED(DM_USB)
213static struct usb_hub_device hub_dev[USB_MAX_HUB];
214static int usb_hub_index;
215
216void usb_hub_reset(void)
217{
218 usb_hub_index = 0;
219
220
221 memset(hub_dev, 0, sizeof(hub_dev));
222}
223
224static struct usb_hub_device *usb_hub_allocate(void)
225{
226 if (usb_hub_index < USB_MAX_HUB)
227 return &hub_dev[usb_hub_index++];
228
229 printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB);
230 return NULL;
231}
232#endif
233
234#define MAX_TRIES 5
235
236static inline const char *portspeed(int portstatus)
237{
238 switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
239 case USB_PORT_STAT_SUPER_SPEED:
240 return "5 Gb/s";
241 case USB_PORT_STAT_HIGH_SPEED:
242 return "480 Mb/s";
243 case USB_PORT_STAT_LOW_SPEED:
244 return "1.5 Mb/s";
245 default:
246 return "12 Mb/s";
247 }
248}
249
250
251
252
253
254
255
256
257
258
259
260static int usb_hub_port_reset(struct usb_device *dev, int port,
261 unsigned short *portstat)
262{
263 int err, tries;
264 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
265 unsigned short portstatus, portchange;
266 int delay = HUB_SHORT_RESET_TIME;
267
268#if CONFIG_IS_ENABLED(DM_USB)
269 debug("%s: resetting '%s' port %d...\n", __func__, dev->dev->name,
270 port + 1);
271#else
272 debug("%s: resetting port %d...\n", __func__, port + 1);
273#endif
274 for (tries = 0; tries < MAX_TRIES; tries++) {
275 err = usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET);
276 if (err < 0)
277 return err;
278
279 mdelay(delay);
280
281 if (usb_get_port_status(dev, port + 1, portsts) < 0) {
282 debug("get_port_status failed status %lX\n",
283 dev->status);
284 return -1;
285 }
286 portstatus = le16_to_cpu(portsts->wPortStatus);
287 portchange = le16_to_cpu(portsts->wPortChange);
288
289 debug("portstatus %x, change %x, %s\n", portstatus, portchange,
290 portspeed(portstatus));
291
292 debug("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \
293 " USB_PORT_STAT_ENABLE %d\n",
294 (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0,
295 (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0,
296 (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0);
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315 if (portstatus & USB_PORT_STAT_ENABLE)
316 break;
317
318
319 delay = HUB_LONG_RESET_TIME;
320 }
321
322 if (tries == MAX_TRIES) {
323 debug("Cannot enable port %i after %i retries, " \
324 "disabling port.\n", port + 1, MAX_TRIES);
325 debug("Maybe the USB cable is bad?\n");
326 return -1;
327 }
328
329 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET);
330 *portstat = portstatus;
331 return 0;
332}
333
334int usb_hub_port_connect_change(struct usb_device *dev, int port)
335{
336 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
337 unsigned short portstatus;
338 int ret, speed;
339
340
341 ret = usb_get_port_status(dev, port + 1, portsts);
342 if (ret < 0) {
343 debug("get_port_status failed\n");
344 return ret;
345 }
346
347 portstatus = le16_to_cpu(portsts->wPortStatus);
348 debug("portstatus %x, change %x, %s\n",
349 portstatus,
350 le16_to_cpu(portsts->wPortChange),
351 portspeed(portstatus));
352
353
354 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION);
355
356
357 if (((!(portstatus & USB_PORT_STAT_CONNECTION)) &&
358 (!(portstatus & USB_PORT_STAT_ENABLE))) ||
359 usb_device_has_child_on_port(dev, port)) {
360 debug("usb_disconnect(&hub->children[port]);\n");
361
362 if (!(portstatus & USB_PORT_STAT_CONNECTION))
363 return -ENOTCONN;
364 }
365
366
367 ret = usb_hub_port_reset(dev, port, &portstatus);
368 if (ret < 0) {
369 if (ret != -ENXIO)
370 printf("cannot reset port %i!?\n", port + 1);
371 return ret;
372 }
373
374 switch (portstatus & USB_PORT_STAT_SPEED_MASK) {
375 case USB_PORT_STAT_SUPER_SPEED:
376 speed = USB_SPEED_SUPER;
377 break;
378 case USB_PORT_STAT_HIGH_SPEED:
379 speed = USB_SPEED_HIGH;
380 break;
381 case USB_PORT_STAT_LOW_SPEED:
382 speed = USB_SPEED_LOW;
383 break;
384 default:
385 speed = USB_SPEED_FULL;
386 break;
387 }
388
389#if CONFIG_IS_ENABLED(DM_USB)
390 struct udevice *child;
391
392 ret = usb_scan_device(dev->dev, port + 1, speed, &child);
393#else
394 struct usb_device *usb;
395
396 ret = usb_alloc_new_device(dev->controller, &usb);
397 if (ret) {
398 printf("cannot create new device: ret=%d", ret);
399 return ret;
400 }
401
402 dev->children[port] = usb;
403 usb->speed = speed;
404 usb->parent = dev;
405 usb->portnr = port + 1;
406
407 ret = usb_new_device(usb);
408 if (ret < 0) {
409
410 usb_free_device(dev->controller);
411 dev->children[port] = NULL;
412 }
413#endif
414 if (ret < 0) {
415 debug("hub: disabling port %d\n", port + 1);
416 usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE);
417 }
418
419 return ret;
420}
421
422static int usb_scan_port(struct usb_device_scan *usb_scan)
423{
424 ALLOC_CACHE_ALIGN_BUFFER(struct usb_port_status, portsts, 1);
425 unsigned short portstatus;
426 unsigned short portchange;
427 struct usb_device *dev;
428 struct usb_hub_device *hub;
429 int ret = 0;
430 int i;
431
432 dev = usb_scan->dev;
433 hub = usb_scan->hub;
434 i = usb_scan->port;
435
436
437
438
439
440 if (get_timer(0) < hub->query_delay)
441 return 0;
442
443 ret = usb_get_port_status(dev, i + 1, portsts);
444 if (ret < 0) {
445 debug("get_port_status failed\n");
446 if (get_timer(0) >= hub->connect_timeout) {
447 debug("devnum=%d port=%d: timeout\n",
448 dev->devnum, i + 1);
449
450 list_del(&usb_scan->list);
451 free(usb_scan);
452 return 0;
453 }
454 return 0;
455 }
456
457 portstatus = le16_to_cpu(portsts->wPortStatus);
458 portchange = le16_to_cpu(portsts->wPortChange);
459 debug("Port %d Status %X Change %X\n", i + 1, portstatus, portchange);
460
461
462
463
464
465
466
467
468 if (!(portchange & USB_PORT_STAT_C_CONNECTION) &&
469 !(portstatus & USB_PORT_STAT_CONNECTION)) {
470 if (get_timer(0) >= hub->connect_timeout) {
471 debug("devnum=%d port=%d: timeout\n",
472 dev->devnum, i + 1);
473
474 list_del(&usb_scan->list);
475 free(usb_scan);
476 return 0;
477 }
478 return 0;
479 }
480
481 if (portchange & USB_PORT_STAT_C_RESET) {
482 debug("port %d reset change\n", i + 1);
483 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_RESET);
484 }
485
486 if ((portchange & USB_SS_PORT_STAT_C_BH_RESET) &&
487 usb_hub_is_superspeed(dev)) {
488 debug("port %d BH reset change\n", i + 1);
489 usb_clear_port_feature(dev, i + 1, USB_SS_PORT_FEAT_C_BH_RESET);
490 }
491
492
493 debug("devnum=%d port=%d: USB dev found\n", dev->devnum, i + 1);
494
495 usb_hub_port_connect_change(dev, i);
496
497 if (portchange & USB_PORT_STAT_C_ENABLE) {
498 debug("port %d enable change, status %x\n", i + 1, portstatus);
499 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_C_ENABLE);
500
501
502
503
504#ifndef CONFIG_USB_EHCI_FARADAY
505
506
507
508
509
510 if (!(portstatus & USB_PORT_STAT_ENABLE) &&
511 (portstatus & USB_PORT_STAT_CONNECTION) &&
512 usb_device_has_child_on_port(dev, i)) {
513 debug("already running port %i disabled by hub (EMI?), re-enabling...\n",
514 i + 1);
515 usb_hub_port_connect_change(dev, i);
516 }
517#endif
518 }
519
520 if (portstatus & USB_PORT_STAT_SUSPEND) {
521 debug("port %d suspend change\n", i + 1);
522 usb_clear_port_feature(dev, i + 1, USB_PORT_FEAT_SUSPEND);
523 }
524
525 if (portchange & USB_PORT_STAT_C_OVERCURRENT) {
526 debug("port %d over-current change\n", i + 1);
527 usb_clear_port_feature(dev, i + 1,
528 USB_PORT_FEAT_C_OVER_CURRENT);
529
530 usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER);
531 hub->overcurrent_count[i]++;
532
533
534
535
536
537 if (hub->overcurrent_count[i] <=
538 PORT_OVERCURRENT_MAX_SCAN_COUNT)
539 return 0;
540
541
542 printf("Port %d over-current occurred %d times\n", i + 1,
543 hub->overcurrent_count[i]);
544 }
545
546
547
548
549
550 list_del(&usb_scan->list);
551 free(usb_scan);
552
553 return 0;
554}
555
556static int usb_device_list_scan(void)
557{
558 struct usb_device_scan *usb_scan;
559 struct usb_device_scan *tmp;
560 static int running;
561 int ret = 0;
562
563
564 if (running)
565 return 0;
566
567 running = 1;
568
569 while (1) {
570
571 if (list_empty(&usb_scan_list))
572 goto out;
573
574 list_for_each_entry_safe(usb_scan, tmp, &usb_scan_list, list) {
575 int ret;
576
577
578 ret = usb_scan_port(usb_scan);
579 if (ret)
580 goto out;
581 }
582 }
583
584out:
585
586
587
588
589
590 running = 0;
591
592 return ret;
593}
594
595static struct usb_hub_device *usb_get_hub_device(struct usb_device *dev)
596{
597 struct usb_hub_device *hub;
598
599#if !CONFIG_IS_ENABLED(DM_USB)
600
601 hub = usb_hub_allocate();
602#else
603 hub = dev_get_uclass_priv(dev->dev);
604#endif
605
606 return hub;
607}
608
609static int usb_hub_configure(struct usb_device *dev)
610{
611 int i, length;
612 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, USB_BUFSIZ);
613 unsigned char *bitmap;
614 short hubCharacteristics;
615 struct usb_hub_descriptor *descriptor;
616 struct usb_hub_device *hub;
617 struct usb_hub_status *hubsts;
618 int ret;
619
620 hub = usb_get_hub_device(dev);
621 if (hub == NULL)
622 return -ENOMEM;
623 hub->pusb_dev = dev;
624
625
626 ret = usb_get_hub_descriptor(dev, buffer, 4);
627 if (ret < 0) {
628 debug("usb_hub_configure: failed to get hub " \
629 "descriptor, giving up %lX\n", dev->status);
630 return ret;
631 }
632 descriptor = (struct usb_hub_descriptor *)buffer;
633
634 length = min_t(int, descriptor->bLength,
635 sizeof(struct usb_hub_descriptor));
636
637 ret = usb_get_hub_descriptor(dev, buffer, length);
638 if (ret < 0) {
639 debug("usb_hub_configure: failed to get hub " \
640 "descriptor 2nd giving up %lX\n", dev->status);
641 return ret;
642 }
643 memcpy((unsigned char *)&hub->desc, buffer, length);
644
645 put_unaligned(le16_to_cpu(get_unaligned(
646 &descriptor->wHubCharacteristics)),
647 &hub->desc.wHubCharacteristics);
648
649 bitmap = (unsigned char *)&hub->desc.u.hs.DeviceRemovable[0];
650
651 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8);
652 bitmap = (unsigned char *)&hub->desc.u.hs.PortPowerCtrlMask[0];
653 memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8);
654
655 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
656 hub->desc.u.hs.DeviceRemovable[i] =
657 descriptor->u.hs.DeviceRemovable[i];
658
659 for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++)
660 hub->desc.u.hs.PortPowerCtrlMask[i] =
661 descriptor->u.hs.PortPowerCtrlMask[i];
662
663 dev->maxchild = descriptor->bNbrPorts;
664 debug("%d ports detected\n", dev->maxchild);
665
666 hubCharacteristics = get_unaligned(&hub->desc.wHubCharacteristics);
667 switch (hubCharacteristics & HUB_CHAR_LPSM) {
668 case 0x00:
669 debug("ganged power switching\n");
670 break;
671 case 0x01:
672 debug("individual port power switching\n");
673 break;
674 case 0x02:
675 case 0x03:
676 debug("unknown reserved power switching mode\n");
677 break;
678 }
679
680 if (hubCharacteristics & HUB_CHAR_COMPOUND)
681 debug("part of a compound device\n");
682 else
683 debug("standalone hub\n");
684
685 switch (hubCharacteristics & HUB_CHAR_OCPM) {
686 case 0x00:
687 debug("global over-current protection\n");
688 break;
689 case 0x08:
690 debug("individual port over-current protection\n");
691 break;
692 case 0x10:
693 case 0x18:
694 debug("no over-current protection\n");
695 break;
696 }
697
698 switch (dev->descriptor.bDeviceProtocol) {
699 case USB_HUB_PR_FS:
700 break;
701 case USB_HUB_PR_HS_SINGLE_TT:
702 debug("Single TT\n");
703 break;
704 case USB_HUB_PR_HS_MULTI_TT:
705 ret = usb_set_interface(dev, 0, 1);
706 if (ret == 0) {
707 debug("TT per port\n");
708 hub->tt.multi = true;
709 } else {
710 debug("Using single TT (err %d)\n", ret);
711 }
712 break;
713 case USB_HUB_PR_SS:
714
715 break;
716 default:
717 debug("Unrecognized hub protocol %d\n",
718 dev->descriptor.bDeviceProtocol);
719 break;
720 }
721
722
723 switch (hubCharacteristics & HUB_CHAR_TTTT) {
724 case HUB_TTTT_8_BITS:
725 if (dev->descriptor.bDeviceProtocol != 0) {
726 hub->tt.think_time = 666;
727 debug("TT requires at most %d FS bit times (%d ns)\n",
728 8, hub->tt.think_time);
729 }
730 break;
731 case HUB_TTTT_16_BITS:
732 hub->tt.think_time = 666 * 2;
733 debug("TT requires at most %d FS bit times (%d ns)\n",
734 16, hub->tt.think_time);
735 break;
736 case HUB_TTTT_24_BITS:
737 hub->tt.think_time = 666 * 3;
738 debug("TT requires at most %d FS bit times (%d ns)\n",
739 24, hub->tt.think_time);
740 break;
741 case HUB_TTTT_32_BITS:
742 hub->tt.think_time = 666 * 4;
743 debug("TT requires at most %d FS bit times (%d ns)\n",
744 32, hub->tt.think_time);
745 break;
746 }
747
748 debug("power on to power good time: %dms\n",
749 descriptor->bPwrOn2PwrGood * 2);
750 debug("hub controller current requirement: %dmA\n",
751 descriptor->bHubContrCurrent);
752
753 for (i = 0; i < dev->maxchild; i++)
754 debug("port %d is%s removable\n", i + 1,
755 hub->desc.u.hs.DeviceRemovable[(i + 1) / 8] & \
756 (1 << ((i + 1) % 8)) ? " not" : "");
757
758 if (sizeof(struct usb_hub_status) > USB_BUFSIZ) {
759 debug("usb_hub_configure: failed to get Status - " \
760 "too long: %d\n", descriptor->bLength);
761 return -EFBIG;
762 }
763
764 ret = usb_get_hub_status(dev, buffer);
765 if (ret < 0) {
766 debug("usb_hub_configure: failed to get Status %lX\n",
767 dev->status);
768 return ret;
769 }
770
771 hubsts = (struct usb_hub_status *)buffer;
772
773 debug("get_hub_status returned status %X, change %X\n",
774 le16_to_cpu(hubsts->wHubStatus),
775 le16_to_cpu(hubsts->wHubChange));
776 debug("local power source is %s\n",
777 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \
778 "lost (inactive)" : "good");
779 debug("%sover-current condition exists\n",
780 (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \
781 "" : "no ");
782
783#if CONFIG_IS_ENABLED(DM_USB)
784
785
786
787
788 ret = usb_update_hub_device(dev);
789 if (ret < 0 && ret != -ENOSYS) {
790 debug("%s: failed to update hub device for HCD (%x)\n",
791 __func__, ret);
792 return ret;
793 }
794
795
796
797
798
799
800
801
802
803
804 if (usb_hub_is_root_hub(dev->dev)) {
805 hub->hub_depth = -1;
806 } else {
807 struct udevice *hdev;
808 int depth = 0;
809
810 hdev = dev->dev->parent;
811 while (!usb_hub_is_root_hub(hdev)) {
812 depth++;
813 hdev = hdev->parent;
814 }
815
816 hub->hub_depth = depth;
817
818 if (usb_hub_is_superspeed(dev)) {
819 debug("set hub (%p) depth to %d\n", dev, depth);
820
821
822
823
824
825 ret = usb_set_hub_depth(dev, depth);
826 if (ret < 0) {
827 debug("%s: failed to set hub depth (%lX)\n",
828 __func__, dev->status);
829 return ret;
830 }
831 }
832 }
833#endif
834
835 usb_hub_power_on(hub);
836
837
838
839
840
841
842 for (i = 0; i < dev->maxchild; i++)
843 usb_hub_reset_devices(hub, i + 1);
844
845
846
847
848
849
850
851
852 for (i = 0; i < dev->maxchild; i++) {
853 struct usb_device_scan *usb_scan;
854
855 usb_scan = calloc(1, sizeof(*usb_scan));
856 if (!usb_scan) {
857 printf("Can't allocate memory for USB device!\n");
858 return -ENOMEM;
859 }
860 usb_scan->dev = dev;
861 usb_scan->hub = hub;
862 usb_scan->port = i;
863 list_add_tail(&usb_scan->list, &usb_scan_list);
864 }
865
866
867
868
869 ret = usb_device_list_scan();
870
871 return ret;
872}
873
874static int usb_hub_check(struct usb_device *dev, int ifnum)
875{
876 struct usb_interface *iface;
877 struct usb_endpoint_descriptor *ep = NULL;
878
879 iface = &dev->config.if_desc[ifnum];
880
881 if (iface->desc.bInterfaceClass != USB_CLASS_HUB)
882 goto err;
883
884
885 if ((iface->desc.bInterfaceSubClass != 0) &&
886 (iface->desc.bInterfaceSubClass != 1))
887 goto err;
888
889 if (iface->desc.bNumEndpoints != 1)
890 goto err;
891 ep = &iface->ep_desc[0];
892
893 if (!(ep->bEndpointAddress & USB_DIR_IN))
894 goto err;
895
896 if ((ep->bmAttributes & 3) != 3)
897 goto err;
898
899 debug("USB hub found\n");
900 return 0;
901
902err:
903 debug("USB hub not found: bInterfaceClass=%d, bInterfaceSubClass=%d, bNumEndpoints=%d\n",
904 iface->desc.bInterfaceClass, iface->desc.bInterfaceSubClass,
905 iface->desc.bNumEndpoints);
906 if (ep) {
907 debug(" bEndpointAddress=%#x, bmAttributes=%d",
908 ep->bEndpointAddress, ep->bmAttributes);
909 }
910
911 return -ENOENT;
912}
913
914int usb_hub_probe(struct usb_device *dev, int ifnum)
915{
916 int ret;
917
918 ret = usb_hub_check(dev, ifnum);
919 if (ret)
920 return 0;
921 ret = usb_hub_configure(dev);
922 return ret;
923}
924
925#if CONFIG_IS_ENABLED(DM_USB)
926int usb_hub_scan(struct udevice *hub)
927{
928 struct usb_device *udev = dev_get_parent_priv(hub);
929
930 return usb_hub_configure(udev);
931}
932
933static int usb_hub_post_probe(struct udevice *dev)
934{
935 debug("%s\n", __func__);
936 return usb_hub_scan(dev);
937}
938
939static const struct udevice_id usb_hub_ids[] = {
940 { .compatible = "usb-hub" },
941 { }
942};
943
944U_BOOT_DRIVER(usb_generic_hub) = {
945 .name = "usb_hub",
946 .id = UCLASS_USB_HUB,
947 .of_match = usb_hub_ids,
948 .flags = DM_FLAG_ALLOC_PRIV_DMA,
949};
950
951UCLASS_DRIVER(usb_hub) = {
952 .id = UCLASS_USB_HUB,
953 .name = "usb_hub",
954 .post_bind = dm_scan_fdt_dev,
955 .post_probe = usb_hub_post_probe,
956 .child_pre_probe = usb_child_pre_probe,
957 .per_child_auto_alloc_size = sizeof(struct usb_device),
958 .per_child_platdata_auto_alloc_size = sizeof(struct usb_dev_platdata),
959 .per_device_auto_alloc_size = sizeof(struct usb_hub_device),
960};
961
962static const struct usb_device_id hub_id_table[] = {
963 {
964 .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
965 .bDeviceClass = USB_CLASS_HUB
966 },
967 { }
968};
969
970U_BOOT_USB_DEVICE(usb_generic_hub, hub_id_table);
971
972#endif
973