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83d290c5 1// SPDX-License-Identifier: GPL-2.0+
affae2bf 2/*
affae2bf 3 * Most of this source has been derived from the Linux USB
460c322f
WD
4 * project:
5 * (C) Copyright Linus Torvalds 1999
6 * (C) Copyright Johannes Erdfelt 1999-2001
7 * (C) Copyright Andreas Gal 1999
8 * (C) Copyright Gregory P. Smith 1999
9 * (C) Copyright Deti Fliegl 1999 (new USB architecture)
10 * (C) Copyright Randy Dunlap 2000
11 * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id)
12 * (C) Copyright Yggdrasil Computing, Inc. 2000
13 * (usb_device_id matching changes by Adam J. Richter)
14 *
15 * Adapted for U-Boot:
16 * (C) Copyright 2001 Denis Peter, MPL AG Switzerland
affae2bf
WD
17 */
18
affae2bf
WD
19/*
20 * How it works:
21 *
22 * Since this is a bootloader, the devices will not be automatic
23 * (re)configured on hotplug, but after a restart of the USB the
24 * device should work.
25 *
26 * For each transfer (except "Interrupt") we wait for completion.
27 */
28#include <common.h>
29#include <command.h>
95fbfe42 30#include <dm.h>
cf92e05c 31#include <memalign.h>
affae2bf 32#include <asm/processor.h>
66cf6410 33#include <linux/compiler.h>
9c998aa8 34#include <linux/ctype.h>
c918261c 35#include <asm/byteorder.h>
b2fb47f1 36#include <asm/unaligned.h>
97b9eb9e 37#include <errno.h>
affae2bf 38#include <usb.h>
affae2bf 39
cd0a9de6
WD
40#define USB_BUFSIZ 512
41
affae2bf 42static int asynch_allowed;
e51aae38
BS
43char usb_started; /* flag for the started/stopped USB status */
44
fd09c205 45#if !CONFIG_IS_ENABLED(DM_USB)
95fbfe42
SG
46static struct usb_device usb_dev[USB_MAX_DEVICE];
47static int dev_index;
48
93c2582f
LS
49#ifndef CONFIG_USB_MAX_CONTROLLER_COUNT
50#define CONFIG_USB_MAX_CONTROLLER_COUNT 1
51#endif
affae2bf 52
affae2bf
WD
53/***************************************************************************
54 * Init USB Device
55 */
affae2bf
WD
56int usb_init(void)
57{
93c2582f
LS
58 void *ctrl;
59 struct usb_device *dev;
60 int i, start_index = 0;
d906bbc2 61 int controllers_initialized = 0;
97b9eb9e 62 int ret;
affae2bf 63
6f5794a6
RB
64 dev_index = 0;
65 asynch_allowed = 1;
affae2bf 66 usb_hub_reset();
93c2582f
LS
67
68 /* first make all devices unknown */
69 for (i = 0; i < USB_MAX_DEVICE; i++) {
70 memset(&usb_dev[i], 0, sizeof(struct usb_device));
71 usb_dev[i].devnum = -1;
72 }
73
affae2bf 74 /* init low_level USB */
93c2582f
LS
75 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
76 /* init low_level USB */
77 printf("USB%d: ", i);
97b9eb9e
MV
78 ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl);
79 if (ret == -ENODEV) { /* No such device. */
80 puts("Port not available.\n");
d906bbc2 81 controllers_initialized++;
97b9eb9e
MV
82 continue;
83 }
84
85 if (ret) { /* Other error. */
93c2582f
LS
86 puts("lowlevel init failed\n");
87 continue;
88 }
89 /*
90 * lowlevel init is OK, now scan the bus for devices
91 * i.e. search HUBs and configure them
92 */
d906bbc2 93 controllers_initialized++;
93c2582f
LS
94 start_index = dev_index;
95 printf("scanning bus %d for devices... ", i);
79b58887
SG
96 ret = usb_alloc_new_device(ctrl, &dev);
97 if (ret)
8879be88
PK
98 break;
99
93c2582f
LS
100 /*
101 * device 0 is always present
102 * (root hub, so let it analyze)
103 */
8879be88
PK
104 ret = usb_new_device(dev);
105 if (ret)
79b58887 106 usb_free_device(dev->controller);
93c2582f 107
8879be88 108 if (start_index == dev_index) {
93c2582f 109 puts("No USB Device found\n");
8879be88
PK
110 continue;
111 } else {
93c2582f
LS
112 printf("%d USB Device(s) found\n",
113 dev_index - start_index);
8879be88 114 }
93c2582f 115
e51aae38 116 usb_started = 1;
93c2582f
LS
117 }
118
ceb4972a 119 debug("scan end\n");
93c2582f 120 /* if we were not able to find at least one working bus, bail out */
d906bbc2 121 if (controllers_initialized == 0)
93c2582f 122 puts("USB error: all controllers failed lowlevel init\n");
93c2582f 123
5a80b344 124 return usb_started ? 0 : -ENODEV;
affae2bf
WD
125}
126
127/******************************************************************************
128 * Stop USB this stops the LowLevel Part and deregisters USB devices.
129 */
130int usb_stop(void)
131{
93c2582f 132 int i;
eba1f2fc
RB
133
134 if (usb_started) {
135 asynch_allowed = 1;
136 usb_started = 0;
137 usb_hub_reset();
93c2582f
LS
138
139 for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) {
140 if (usb_lowlevel_stop(i))
141 printf("failed to stop USB controller %d\n", i);
142 }
eba1f2fc 143 }
93c2582f
LS
144
145 return 0;
affae2bf
WD
146}
147
08f3bb0b
VP
148/******************************************************************************
149 * Detect if a USB device has been plugged or unplugged.
150 */
151int usb_detect_change(void)
152{
153 int i, j;
154 int change = 0;
155
156 for (j = 0; j < USB_MAX_DEVICE; j++) {
157 for (i = 0; i < usb_dev[j].maxchild; i++) {
158 struct usb_port_status status;
159
160 if (usb_get_port_status(&usb_dev[j], i + 1,
161 &status) < 0)
162 /* USB request failed */
163 continue;
164
165 if (le16_to_cpu(status.wPortChange) &
166 USB_PORT_STAT_C_CONNECTION)
167 change++;
168 }
169 }
170
171 return change;
172}
173
affae2bf
WD
174/*
175 * disables the asynch behaviour of the control message. This is used for data
176 * transfers that uses the exclusiv access to the control and bulk messages.
89d48367 177 * Returns the old value so it can be restored later.
affae2bf 178 */
89d48367 179int usb_disable_asynch(int disable)
affae2bf 180{
89d48367
SG
181 int old_value = asynch_allowed;
182
6f5794a6 183 asynch_allowed = !disable;
89d48367 184 return old_value;
affae2bf 185}
fd09c205 186#endif /* !CONFIG_IS_ENABLED(DM_USB) */
affae2bf
WD
187
188
189/*-------------------------------------------------------------------
190 * Message wrappers.
191 *
192 */
193
194/*
195 * submits an Interrupt Message
196 */
197int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe,
6f5794a6 198 void *buffer, int transfer_len, int interval)
affae2bf 199{
6f5794a6 200 return submit_int_msg(dev, pipe, buffer, transfer_len, interval);
affae2bf
WD
201}
202
203/*
204 * submits a control message and waits for comletion (at least timeout * 1ms)
205 * If timeout is 0, we don't wait for completion (used as example to set and
206 * clear keyboards LEDs). For data transfers, (storage transfers) we don't
207 * allow control messages with 0 timeout, by previousely resetting the flag
208 * asynch_allowed (usb_disable_asynch(1)).
a6f70a3d 209 * returns the transferred length if OK or -1 if error. The transferred length
affae2bf
WD
210 * and the current status are stored in the dev->act_len and dev->status.
211 */
212int usb_control_msg(struct usb_device *dev, unsigned int pipe,
213 unsigned char request, unsigned char requesttype,
214 unsigned short value, unsigned short index,
215 void *data, unsigned short size, int timeout)
216{
f5766139 217 ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1);
651d95c8 218 int err;
e159e486 219
6f5794a6
RB
220 if ((timeout == 0) && (!asynch_allowed)) {
221 /* request for a asynch control pipe is not allowed */
5a80b344 222 return -EINVAL;
6f5794a6 223 }
9c998aa8 224
affae2bf 225 /* set setup command */
f5766139
PS
226 setup_packet->requesttype = requesttype;
227 setup_packet->request = request;
228 setup_packet->value = cpu_to_le16(value);
229 setup_packet->index = cpu_to_le16(index);
230 setup_packet->length = cpu_to_le16(size);
ceb4972a
VG
231 debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \
232 "value 0x%X index 0x%X length 0x%X\n",
233 request, requesttype, value, index, size);
6f5794a6 234 dev->status = USB_ST_NOT_PROC; /*not yet processed */
affae2bf 235
651d95c8
HG
236 err = submit_control_msg(dev, pipe, data, size, setup_packet);
237 if (err < 0)
238 return err;
6f5794a6 239 if (timeout == 0)
affae2bf 240 return (int)size;
6f5794a6 241
84d36b30
RB
242 /*
243 * Wait for status to update until timeout expires, USB driver
244 * interrupt handler may set the status when the USB operation has
245 * been completed.
246 */
247 while (timeout--) {
248 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
249 break;
5b84dd67 250 mdelay(1);
48867208 251 }
84d36b30
RB
252 if (dev->status)
253 return -1;
48867208
RB
254
255 return dev->act_len;
84d36b30 256
affae2bf
WD
257}
258
259/*-------------------------------------------------------------------
260 * submits bulk message, and waits for completion. returns 0 if Ok or
5a80b344 261 * negative if Error.
affae2bf
WD
262 * synchronous behavior
263 */
264int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
265 void *data, int len, int *actual_length, int timeout)
266{
267 if (len < 0)
5a80b344 268 return -EINVAL;
6f5794a6 269 dev->status = USB_ST_NOT_PROC; /*not yet processed */
fd06028d 270 if (submit_bulk_msg(dev, pipe, data, len) < 0)
5a80b344 271 return -EIO;
6f5794a6
RB
272 while (timeout--) {
273 if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
affae2bf 274 break;
5b84dd67 275 mdelay(1);
affae2bf 276 }
6f5794a6
RB
277 *actual_length = dev->act_len;
278 if (dev->status == 0)
affae2bf
WD
279 return 0;
280 else
5a80b344 281 return -EIO;
affae2bf
WD
282}
283
284
285/*-------------------------------------------------------------------
286 * Max Packet stuff
287 */
288
289/*
290 * returns the max packet size, depending on the pipe direction and
291 * the configurations values
292 */
6f5794a6 293int usb_maxpacket(struct usb_device *dev, unsigned long pipe)
affae2bf 294{
6f5794a6
RB
295 /* direction is out -> use emaxpacket out */
296 if ((pipe & USB_DIR_IN) == 0)
de39f8c1 297 return dev->epmaxpacketout[((pipe>>15) & 0xf)];
affae2bf 298 else
de39f8c1 299 return dev->epmaxpacketin[((pipe>>15) & 0xf)];
affae2bf
WD
300}
301
5e8baf87
MV
302/*
303 * The routine usb_set_maxpacket_ep() is extracted from the loop of routine
be19d324
RB
304 * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine
305 * when it is inlined in 1 single routine. What happens is that the register r3
306 * is used as loop-count 'i', but gets overwritten later on.
307 * This is clearly a compiler bug, but it is easier to workaround it here than
308 * to update the compiler (Occurs with at least several GCC 4.{1,2},x
309 * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM)
5e8baf87
MV
310 *
311 * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5.
be19d324 312 */
66cf6410 313static void noinline
5e8baf87 314usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx)
be19d324
RB
315{
316 int b;
5e8baf87 317 struct usb_endpoint_descriptor *ep;
b2fb47f1 318 u16 ep_wMaxPacketSize;
5e8baf87
MV
319
320 ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx];
be19d324
RB
321
322 b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
b2fb47f1 323 ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize);
be19d324
RB
324
325 if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) ==
326 USB_ENDPOINT_XFER_CONTROL) {
327 /* Control => bidirectional */
b2fb47f1
TR
328 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
329 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
ceb4972a
VG
330 debug("##Control EP epmaxpacketout/in[%d] = %d\n",
331 b, dev->epmaxpacketin[b]);
be19d324
RB
332 } else {
333 if ((ep->bEndpointAddress & 0x80) == 0) {
334 /* OUT Endpoint */
b2fb47f1
TR
335 if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) {
336 dev->epmaxpacketout[b] = ep_wMaxPacketSize;
ceb4972a
VG
337 debug("##EP epmaxpacketout[%d] = %d\n",
338 b, dev->epmaxpacketout[b]);
be19d324
RB
339 }
340 } else {
341 /* IN Endpoint */
b2fb47f1
TR
342 if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) {
343 dev->epmaxpacketin[b] = ep_wMaxPacketSize;
ceb4972a
VG
344 debug("##EP epmaxpacketin[%d] = %d\n",
345 b, dev->epmaxpacketin[b]);
be19d324
RB
346 }
347 } /* if out */
348 } /* if control */
349}
350
affae2bf
WD
351/*
352 * set the max packed value of all endpoints in the given configuration
353 */
c08b1b26 354static int usb_set_maxpacket(struct usb_device *dev)
affae2bf 355{
be19d324 356 int i, ii;
affae2bf 357
8f8bd565
TR
358 for (i = 0; i < dev->config.desc.bNumInterfaces; i++)
359 for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++)
5e8baf87 360 usb_set_maxpacket_ep(dev, i, ii);
affae2bf 361
affae2bf
WD
362 return 0;
363}
364
365/*******************************************************************************
366 * Parse the config, located in buffer, and fills the dev->config structure.
367 * Note that all little/big endian swapping are done automatically.
eaf3e613 368 * (wTotalLength has already been swapped and sanitized when it was read.)
affae2bf 369 */
c08b1b26
MV
370static int usb_parse_config(struct usb_device *dev,
371 unsigned char *buffer, int cfgno)
affae2bf
WD
372{
373 struct usb_descriptor_header *head;
7455af41 374 int index, ifno, epno, curr_if_num;
b2fb47f1 375 u16 ep_wMaxPacketSize;
605bd75a 376 struct usb_interface *if_desc = NULL;
7455af41
BS
377
378 ifno = -1;
379 epno = -1;
380 curr_if_num = -1;
381
382 dev->configno = cfgno;
383 head = (struct usb_descriptor_header *) &buffer[0];
6f5794a6
RB
384 if (head->bDescriptorType != USB_DT_CONFIG) {
385 printf(" ERROR: NOT USB_CONFIG_DESC %x\n",
386 head->bDescriptorType);
5a80b344 387 return -EINVAL;
affae2bf 388 }
eaf3e613
JW
389 if (head->bLength != USB_DT_CONFIG_SIZE) {
390 printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength);
5a80b344 391 return -EINVAL;
eaf3e613
JW
392 }
393 memcpy(&dev->config, head, USB_DT_CONFIG_SIZE);
7455af41 394 dev->config.no_of_if = 0;
affae2bf 395
8f8bd565 396 index = dev->config.desc.bLength;
6f5794a6
RB
397 /* Ok the first entry must be a configuration entry,
398 * now process the others */
7455af41 399 head = (struct usb_descriptor_header *) &buffer[index];
eaf3e613 400 while (index + 1 < dev->config.desc.wTotalLength && head->bLength) {
6f5794a6
RB
401 switch (head->bDescriptorType) {
402 case USB_DT_INTERFACE:
eaf3e613
JW
403 if (head->bLength != USB_DT_INTERFACE_SIZE) {
404 printf("ERROR: Invalid USB IF length (%d)\n",
405 head->bLength);
406 break;
407 }
408 if (index + USB_DT_INTERFACE_SIZE >
409 dev->config.desc.wTotalLength) {
410 puts("USB IF descriptor overflowed buffer!\n");
411 break;
412 }
6f5794a6 413 if (((struct usb_interface_descriptor *) \
eaf3e613 414 head)->bInterfaceNumber != curr_if_num) {
6f5794a6
RB
415 /* this is a new interface, copy new desc */
416 ifno = dev->config.no_of_if;
eaf3e613
JW
417 if (ifno >= USB_MAXINTERFACES) {
418 puts("Too many USB interfaces!\n");
419 /* try to go on with what we have */
5a80b344 420 return -EINVAL;
eaf3e613 421 }
605bd75a 422 if_desc = &dev->config.if_desc[ifno];
6f5794a6 423 dev->config.no_of_if++;
eaf3e613
JW
424 memcpy(if_desc, head,
425 USB_DT_INTERFACE_SIZE);
605bd75a
VG
426 if_desc->no_of_ep = 0;
427 if_desc->num_altsetting = 1;
6f5794a6 428 curr_if_num =
605bd75a 429 if_desc->desc.bInterfaceNumber;
6f5794a6
RB
430 } else {
431 /* found alternate setting for the interface */
605bd75a
VG
432 if (ifno >= 0) {
433 if_desc = &dev->config.if_desc[ifno];
434 if_desc->num_altsetting++;
435 }
6f5794a6
RB
436 }
437 break;
438 case USB_DT_ENDPOINT:
2f0eb2ac
BM
439 if (head->bLength != USB_DT_ENDPOINT_SIZE &&
440 head->bLength != USB_DT_ENDPOINT_AUDIO_SIZE) {
eaf3e613
JW
441 printf("ERROR: Invalid USB EP length (%d)\n",
442 head->bLength);
443 break;
444 }
2f0eb2ac 445 if (index + head->bLength >
eaf3e613
JW
446 dev->config.desc.wTotalLength) {
447 puts("USB EP descriptor overflowed buffer!\n");
448 break;
449 }
450 if (ifno < 0) {
451 puts("Endpoint descriptor out of order!\n");
452 break;
453 }
6f5794a6 454 epno = dev->config.if_desc[ifno].no_of_ep;
605bd75a 455 if_desc = &dev->config.if_desc[ifno];
447b9cdf 456 if (epno >= USB_MAXENDPOINTS) {
eaf3e613
JW
457 printf("Interface %d has too many endpoints!\n",
458 if_desc->desc.bInterfaceNumber);
5a80b344 459 return -EINVAL;
eaf3e613 460 }
6f5794a6 461 /* found an endpoint */
605bd75a 462 if_desc->no_of_ep++;
eaf3e613
JW
463 memcpy(&if_desc->ep_desc[epno], head,
464 USB_DT_ENDPOINT_SIZE);
b2fb47f1
TR
465 ep_wMaxPacketSize = get_unaligned(&dev->config.\
466 if_desc[ifno].\
467 ep_desc[epno].\
468 wMaxPacketSize);
469 put_unaligned(le16_to_cpu(ep_wMaxPacketSize),
470 &dev->config.\
471 if_desc[ifno].\
472 ep_desc[epno].\
473 wMaxPacketSize);
ceb4972a 474 debug("if %d, ep %d\n", ifno, epno);
6f5794a6 475 break;
6497c667 476 case USB_DT_SS_ENDPOINT_COMP:
eaf3e613
JW
477 if (head->bLength != USB_DT_SS_EP_COMP_SIZE) {
478 printf("ERROR: Invalid USB EPC length (%d)\n",
479 head->bLength);
480 break;
481 }
482 if (index + USB_DT_SS_EP_COMP_SIZE >
483 dev->config.desc.wTotalLength) {
484 puts("USB EPC descriptor overflowed buffer!\n");
485 break;
486 }
487 if (ifno < 0 || epno < 0) {
488 puts("EPC descriptor out of order!\n");
489 break;
490 }
6497c667 491 if_desc = &dev->config.if_desc[ifno];
eaf3e613
JW
492 memcpy(&if_desc->ss_ep_comp_desc[epno], head,
493 USB_DT_SS_EP_COMP_SIZE);
6497c667 494 break;
6f5794a6
RB
495 default:
496 if (head->bLength == 0)
5a80b344 497 return -EINVAL;
6f5794a6 498
ceb4972a
VG
499 debug("unknown Description Type : %x\n",
500 head->bDescriptorType);
6f5794a6 501
ceb4972a 502#ifdef DEBUG
6f5794a6 503 {
fad2e1b0 504 unsigned char *ch = (unsigned char *)head;
ceb4972a
VG
505 int i;
506
6f5794a6 507 for (i = 0; i < head->bLength; i++)
ceb4972a
VG
508 debug("%02X ", *ch++);
509 debug("\n\n\n");
6f5794a6 510 }
ceb4972a 511#endif
6f5794a6 512 break;
affae2bf 513 }
7455af41
BS
514 index += head->bLength;
515 head = (struct usb_descriptor_header *)&buffer[index];
affae2bf 516 }
5a80b344 517 return 0;
affae2bf
WD
518}
519
520/***********************************************************************
521 * Clears an endpoint
522 * endp: endpoint number in bits 0-3;
523 * direction flag in bit 7 (1 = IN, 0 = OUT)
524 */
525int usb_clear_halt(struct usb_device *dev, int pipe)
526{
527 int result;
9c998aa8 528 int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7);
affae2bf
WD
529
530 result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
6f5794a6
RB
531 USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0,
532 endp, NULL, 0, USB_CNTL_TIMEOUT * 3);
affae2bf
WD
533
534 /* don't clear if failed */
535 if (result < 0)
536 return result;
9c998aa8 537
095b8a37 538 /*
9c998aa8
WD
539 * NOTE: we do not get status and verify reset was successful
540 * as some devices are reported to lock up upon this check..
541 */
542
affae2bf 543 usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe));
9c998aa8 544
affae2bf
WD
545 /* toggle is reset on clear */
546 usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0);
547 return 0;
548}
549
550
551/**********************************************************************
552 * get_descriptor type
553 */
c08b1b26 554static int usb_get_descriptor(struct usb_device *dev, unsigned char type,
6f5794a6 555 unsigned char index, void *buf, int size)
affae2bf 556{
8319aeb1
MY
557 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
558 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
559 (type << 8) + index, 0, buf, size,
560 USB_CNTL_TIMEOUT);
affae2bf
WD
561}
562
563/**********************************************************************
c75f57fb 564 * gets len of configuration cfgno
affae2bf 565 */
c75f57fb 566int usb_get_configuration_len(struct usb_device *dev, int cfgno)
affae2bf 567{
53677ef1 568 int result;
c75f57fb 569 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, 9);
c60795f4 570 struct usb_config_descriptor *config;
affae2bf 571
c60795f4 572 config = (struct usb_config_descriptor *)&buffer[0];
48867208
RB
573 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9);
574 if (result < 9) {
affae2bf 575 if (result < 0)
6f5794a6
RB
576 printf("unable to get descriptor, error %lX\n",
577 dev->status);
affae2bf 578 else
6f5794a6 579 printf("config descriptor too short " \
48867208 580 "(expected %i, got %i)\n", 9, result);
5a80b344 581 return -EIO;
affae2bf 582 }
c75f57fb
SB
583 return le16_to_cpu(config->wTotalLength);
584}
affae2bf 585
c75f57fb
SB
586/**********************************************************************
587 * gets configuration cfgno and store it in the buffer
588 */
589int usb_get_configuration_no(struct usb_device *dev, int cfgno,
590 unsigned char *buffer, int length)
591{
592 int result;
593 struct usb_config_descriptor *config;
cd0a9de6 594
c75f57fb 595 config = (struct usb_config_descriptor *)&buffer[0];
eaf3e613 596 result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length);
c75f57fb
SB
597 debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result,
598 le16_to_cpu(config->wTotalLength));
599 config->wTotalLength = result; /* validated, with CPU byte order */
eaf3e613 600
affae2bf
WD
601 return result;
602}
603
604/********************************************************************
605 * set address of a device to the value in dev->devnum.
606 * This can only be done by addressing the device via the default address (0)
607 */
c08b1b26 608static int usb_set_address(struct usb_device *dev)
affae2bf 609{
ceb4972a 610 debug("set address %d\n", dev->devnum);
8319aeb1
MY
611
612 return usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS,
613 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT);
affae2bf
WD
614}
615
616/********************************************************************
617 * set interface number to interface
618 */
619int usb_set_interface(struct usb_device *dev, int interface, int alternate)
620{
8f8bd565 621 struct usb_interface *if_face = NULL;
affae2bf
WD
622 int ret, i;
623
8f8bd565
TR
624 for (i = 0; i < dev->config.desc.bNumInterfaces; i++) {
625 if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) {
affae2bf
WD
626 if_face = &dev->config.if_desc[i];
627 break;
628 }
629 }
630 if (!if_face) {
631 printf("selecting invalid interface %d", interface);
5a80b344 632 return -EINVAL;
affae2bf 633 }
7455af41
BS
634 /*
635 * We should return now for devices with only one alternate setting.
6f5794a6
RB
636 * According to 9.4.10 of the Universal Serial Bus Specification
637 * Revision 2.0 such devices can return with a STALL. This results in
638 * some USB sticks timeouting during initialization and then being
639 * unusable in U-Boot.
7455af41
BS
640 */
641 if (if_face->num_altsetting == 1)
642 return 0;
affae2bf 643
6f5794a6
RB
644 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
645 USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE,
646 alternate, interface, NULL, 0,
647 USB_CNTL_TIMEOUT * 5);
648 if (ret < 0)
affae2bf
WD
649 return ret;
650
affae2bf
WD
651 return 0;
652}
653
654/********************************************************************
655 * set configuration number to configuration
656 */
c08b1b26 657static int usb_set_configuration(struct usb_device *dev, int configuration)
affae2bf
WD
658{
659 int res;
ceb4972a 660 debug("set configuration %d\n", configuration);
affae2bf 661 /* set setup command */
6f5794a6
RB
662 res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
663 USB_REQ_SET_CONFIGURATION, 0,
664 configuration, 0,
665 NULL, 0, USB_CNTL_TIMEOUT);
666 if (res == 0) {
affae2bf
WD
667 dev->toggle[0] = 0;
668 dev->toggle[1] = 0;
669 return 0;
6f5794a6 670 } else
5a80b344 671 return -EIO;
affae2bf
WD
672}
673
674/********************************************************************
675 * set protocol to protocol
676 */
677int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol)
678{
679 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
680 USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
681 protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
682}
683
684/********************************************************************
685 * set idle
686 */
687int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id)
688{
689 return usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
690 USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE,
691 (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT);
692}
693
694/********************************************************************
695 * get report
696 */
6f5794a6
RB
697int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type,
698 unsigned char id, void *buf, int size)
affae2bf
WD
699{
700 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
6f5794a6
RB
701 USB_REQ_GET_REPORT,
702 USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
703 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
affae2bf
WD
704}
705
706/********************************************************************
707 * get class descriptor
708 */
709int usb_get_class_descriptor(struct usb_device *dev, int ifnum,
710 unsigned char type, unsigned char id, void *buf, int size)
711{
712 return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
713 USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
714 (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT);
715}
716
717/********************************************************************
718 * get string index in buffer
719 */
c08b1b26 720static int usb_get_string(struct usb_device *dev, unsigned short langid,
6f5794a6 721 unsigned char index, void *buf, int size)
affae2bf 722{
9c998aa8
WD
723 int i;
724 int result;
725
726 for (i = 0; i < 3; ++i) {
727 /* some devices are flaky */
728 result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
729 USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
095b8a37 730 (USB_DT_STRING << 8) + index, langid, buf, size,
9c998aa8
WD
731 USB_CNTL_TIMEOUT);
732
733 if (result > 0)
734 break;
095b8a37
WD
735 }
736
9c998aa8
WD
737 return result;
738}
739
740
741static void usb_try_string_workarounds(unsigned char *buf, int *length)
742{
743 int newlength, oldlength = *length;
744
745 for (newlength = 2; newlength + 1 < oldlength; newlength += 2)
746 if (!isprint(buf[newlength]) || buf[newlength + 1])
747 break;
748
749 if (newlength > 2) {
750 buf[0] = newlength;
751 *length = newlength;
752 }
affae2bf
WD
753}
754
9c998aa8
WD
755
756static int usb_string_sub(struct usb_device *dev, unsigned int langid,
757 unsigned int index, unsigned char *buf)
758{
759 int rc;
760
761 /* Try to read the string descriptor by asking for the maximum
762 * possible number of bytes */
763 rc = usb_get_string(dev, langid, index, buf, 255);
764
765 /* If that failed try to read the descriptor length, then
766 * ask for just that many bytes */
767 if (rc < 2) {
768 rc = usb_get_string(dev, langid, index, buf, 2);
769 if (rc == 2)
770 rc = usb_get_string(dev, langid, index, buf, buf[0]);
771 }
772
773 if (rc >= 2) {
774 if (!buf[0] && !buf[1])
775 usb_try_string_workarounds(buf, &rc);
776
777 /* There might be extra junk at the end of the descriptor */
778 if (buf[0] < rc)
779 rc = buf[0];
780
781 rc = rc - (rc & 1); /* force a multiple of two */
782 }
783
784 if (rc < 2)
5a80b344 785 rc = -EINVAL;
9c998aa8
WD
786
787 return rc;
788}
789
790
affae2bf
WD
791/********************************************************************
792 * usb_string:
793 * Get string index and translate it to ascii.
794 * returns string length (> 0) or error (< 0)
795 */
796int usb_string(struct usb_device *dev, int index, char *buf, size_t size)
797{
f5766139 798 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ);
affae2bf
WD
799 unsigned char *tbuf;
800 int err;
801 unsigned int u, idx;
802
803 if (size <= 0 || !buf || !index)
5a80b344 804 return -EINVAL;
affae2bf 805 buf[0] = 0;
d0ff51ba 806 tbuf = &mybuf[0];
affae2bf
WD
807
808 /* get langid for strings if it's not yet known */
809 if (!dev->have_langid) {
9c998aa8 810 err = usb_string_sub(dev, 0, 0, tbuf);
affae2bf 811 if (err < 0) {
ceb4972a
VG
812 debug("error getting string descriptor 0 " \
813 "(error=%lx)\n", dev->status);
5a80b344 814 return -EIO;
affae2bf 815 } else if (tbuf[0] < 4) {
ceb4972a 816 debug("string descriptor 0 too short\n");
5a80b344 817 return -EIO;
affae2bf
WD
818 } else {
819 dev->have_langid = -1;
6f5794a6 820 dev->string_langid = tbuf[2] | (tbuf[3] << 8);
affae2bf 821 /* always use the first langid listed */
ceb4972a
VG
822 debug("USB device number %d default " \
823 "language ID 0x%x\n",
824 dev->devnum, dev->string_langid);
affae2bf
WD
825 }
826 }
cd0a9de6 827
9c998aa8 828 err = usb_string_sub(dev, dev->string_langid, index, tbuf);
affae2bf
WD
829 if (err < 0)
830 return err;
9c998aa8 831
affae2bf
WD
832 size--; /* leave room for trailing NULL char in output buffer */
833 for (idx = 0, u = 2; u < err; u += 2) {
834 if (idx >= size)
835 break;
836 if (tbuf[u+1]) /* high byte */
837 buf[idx++] = '?'; /* non-ASCII character */
838 else
839 buf[idx++] = tbuf[u];
840 }
841 buf[idx] = 0;
842 err = idx;
843 return err;
844}
845
846
847/********************************************************************
848 * USB device handling:
849 * the USB device are static allocated [USB_MAX_DEVICE].
850 */
851
fd09c205 852#if !CONFIG_IS_ENABLED(DM_USB)
affae2bf
WD
853
854/* returns a pointer to the device with the index [index].
855 * if the device is not assigned (dev->devnum==-1) returns NULL
856 */
6f5794a6 857struct usb_device *usb_get_dev_index(int index)
affae2bf 858{
6f5794a6 859 if (usb_dev[index].devnum == -1)
affae2bf
WD
860 return NULL;
861 else
862 return &usb_dev[index];
863}
864
79b58887 865int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp)
affae2bf
WD
866{
867 int i;
ceb4972a 868 debug("New Device %d\n", dev_index);
6f5794a6
RB
869 if (dev_index == USB_MAX_DEVICE) {
870 printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE);
79b58887 871 return -ENOSPC;
affae2bf 872 }
6f5794a6
RB
873 /* default Address is 0, real addresses start with 1 */
874 usb_dev[dev_index].devnum = dev_index + 1;
875 usb_dev[dev_index].maxchild = 0;
876 for (i = 0; i < USB_MAXCHILDREN; i++)
877 usb_dev[dev_index].children[i] = NULL;
878 usb_dev[dev_index].parent = NULL;
c7e3b2b5 879 usb_dev[dev_index].controller = controller;
affae2bf 880 dev_index++;
79b58887
SG
881 *devp = &usb_dev[dev_index - 1];
882
883 return 0;
affae2bf
WD
884}
885
359439d2
MC
886/*
887 * Free the newly created device node.
888 * Called in error cases where configuring a newly attached
889 * device fails for some reason.
890 */
79b58887 891void usb_free_device(struct udevice *controller)
359439d2
MC
892{
893 dev_index--;
ceb4972a 894 debug("Freeing device node: %d\n", dev_index);
359439d2
MC
895 memset(&usb_dev[dev_index], 0, sizeof(struct usb_device));
896 usb_dev[dev_index].devnum = -1;
897}
affae2bf 898
5853e133
VG
899/*
900 * XHCI issues Enable Slot command and thereafter
901 * allocates device contexts. Provide a weak alias
902 * function for the purpose, so that XHCI overrides it
903 * and EHCI/OHCI just work out of the box.
904 */
905__weak int usb_alloc_device(struct usb_device *udev)
906{
907 return 0;
908}
fd09c205 909#endif /* !CONFIG_IS_ENABLED(DM_USB) */
862e75c0 910
682c9f8d 911static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub)
862e75c0 912{
3ed9eb93 913 if (!hub)
8802f563 914 usb_reset_root_port(dev);
862e75c0
SG
915
916 return 0;
917}
918
0ed27905 919static int get_descriptor_len(struct usb_device *dev, int len, int expect_len)
affae2bf 920{
128fcac0 921 __maybe_unused struct usb_device_descriptor *desc;
f5766139 922 ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ);
0ed27905
SG
923 int err;
924
925 desc = (struct usb_device_descriptor *)tmpbuf;
926
927 err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len);
928 if (err < expect_len) {
929 if (err < 0) {
930 printf("unable to get device descriptor (error=%d)\n",
931 err);
932 return err;
933 } else {
934 printf("USB device descriptor short read (expected %i, got %i)\n",
935 expect_len, err);
936 return -EIO;
937 }
938 }
939 memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor));
940
941 return 0;
942}
943
944static int usb_setup_descriptor(struct usb_device *dev, bool do_read)
945{
53d8aa0f
SG
946 /*
947 * This is a Windows scheme of initialization sequence, with double
48867208 948 * reset of the device (Linux uses the same sequence)
c9e8436b
RB
949 * Some equipment is said to work only with such init sequence; this
950 * patch is based on the work by Alan Stern:
de39f8c1
MT
951 * http://sourceforge.net/mailarchive/forum.php?
952 * thread_id=5729457&forum_id=5398
9c998aa8 953 */
9c998aa8 954
53d8aa0f
SG
955 /*
956 * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is
9c998aa8
WD
957 * only 18 bytes long, this will terminate with a short packet. But if
958 * the maxpacket size is 8 or 16 the device may be waiting to transmit
2b338ef4
HG
959 * some more, or keeps on retransmitting the 8 byte header.
960 */
9c998aa8 961
2b338ef4
HG
962 if (dev->speed == USB_SPEED_LOW) {
963 dev->descriptor.bMaxPacketSize0 = 8;
964 dev->maxpacketsize = PACKET_SIZE_8;
965 } else {
966 dev->descriptor.bMaxPacketSize0 = 64;
967 dev->maxpacketsize = PACKET_SIZE_64;
968 }
969 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
970 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
48867208 971
c008faa7 972 if (do_read && dev->speed == USB_SPEED_FULL) {
128fcac0 973 int err;
862e75c0 974
128fcac0 975 /*
c008faa7
BM
976 * Validate we've received only at least 8 bytes, not that
977 * we've received the entire descriptor. The reasoning is:
978 * - The code only uses fields in the first 8 bytes, so
979 * that's all we need to have fetched at this stage.
980 * - The smallest maxpacket size is 8 bytes. Before we know
981 * the actual maxpacket the device uses, the USB controller
982 * may only accept a single packet. Consequently we are only
983 * guaranteed to receive 1 packet (at least 8 bytes) even in
984 * a non-error case.
128fcac0 985 *
c008faa7
BM
986 * At least the DWC2 controller needs to be programmed with
987 * the number of packets in addition to the number of bytes.
988 * A request for 64 bytes of data with the maxpacket guessed
989 * as 64 (above) yields a request for 1 packet.
128fcac0 990 */
0ed27905
SG
991 err = get_descriptor_len(dev, 64, 8);
992 if (err)
993 return err;
9c998aa8 994 }
48867208 995
de39f8c1 996 dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0;
affae2bf
WD
997 dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0;
998 switch (dev->descriptor.bMaxPacketSize0) {
de39f8c1
MT
999 case 8:
1000 dev->maxpacketsize = PACKET_SIZE_8;
1001 break;
1002 case 16:
1003 dev->maxpacketsize = PACKET_SIZE_16;
1004 break;
1005 case 32:
1006 dev->maxpacketsize = PACKET_SIZE_32;
1007 break;
1008 case 64:
1009 dev->maxpacketsize = PACKET_SIZE_64;
1010 break;
04ee6ee2 1011 default:
c008faa7 1012 printf("%s: invalid max packet size\n", __func__);
04ee6ee2 1013 return -EIO;
affae2bf 1014 }
128fcac0
SG
1015
1016 return 0;
1017}
1018
91398f98 1019static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read,
9eb72dd1 1020 struct usb_device *parent)
128fcac0 1021{
91398f98 1022 int err;
128fcac0
SG
1023
1024 /*
1025 * Allocate usb 3.0 device context.
1026 * USB 3.0 (xHCI) protocol tries to allocate device slot
1027 * and related data structures first. This call does that.
1028 * Refer to sec 4.3.2 in xHCI spec rev1.0
1029 */
91398f98
SG
1030 err = usb_alloc_device(dev);
1031 if (err) {
128fcac0 1032 printf("Cannot allocate device context to get SLOT_ID\n");
91398f98 1033 return err;
128fcac0 1034 }
128fcac0
SG
1035 err = usb_setup_descriptor(dev, do_read);
1036 if (err)
1037 return err;
682c9f8d 1038 err = usb_hub_port_reset(dev, parent);
128fcac0
SG
1039 if (err)
1040 return err;
1041
affae2bf
WD
1042 dev->devnum = addr;
1043
1044 err = usb_set_address(dev); /* set address */
1045
1046 if (err < 0) {
6f5794a6
RB
1047 printf("\n USB device not accepting new address " \
1048 "(error=%lX)\n", dev->status);
91398f98 1049 return err;
affae2bf
WD
1050 }
1051
5b84dd67 1052 mdelay(10); /* Let the SET_ADDRESS settle */
affae2bf 1053
932bb668
BM
1054 /*
1055 * If we haven't read device descriptor before, read it here
1056 * after device is assigned an address. This is only applicable
1057 * to xHCI so far.
1058 */
1059 if (!do_read) {
1060 err = usb_setup_descriptor(dev, true);
1061 if (err)
1062 return err;
1063 }
1064
91398f98
SG
1065 return 0;
1066}
1067
95fbfe42 1068int usb_select_config(struct usb_device *dev)
91398f98 1069{
2f1b4302 1070 unsigned char *tmpbuf = NULL;
0ed27905 1071 int err;
91398f98 1072
0ed27905
SG
1073 err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE);
1074 if (err)
1075 return err;
affae2bf 1076
affae2bf 1077 /* correct le values */
c918261c
CE
1078 le16_to_cpus(&dev->descriptor.bcdUSB);
1079 le16_to_cpus(&dev->descriptor.idVendor);
1080 le16_to_cpus(&dev->descriptor.idProduct);
1081 le16_to_cpus(&dev->descriptor.bcdDevice);
0ed27905 1082
ef71290b
MV
1083 /*
1084 * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive
1085 * about this first Get Descriptor request. If there are any other
1086 * requests in the first microframe, the stick crashes. Wait about
1087 * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0).
1088 */
1089 mdelay(1);
1090
affae2bf 1091 /* only support for one config for now */
c75f57fb
SB
1092 err = usb_get_configuration_len(dev, 0);
1093 if (err >= 0) {
1094 tmpbuf = (unsigned char *)malloc_cache_aligned(err);
1095 if (!tmpbuf)
1096 err = -ENOMEM;
1097 else
1098 err = usb_get_configuration_no(dev, 0, tmpbuf, err);
1099 }
8b8d779d
VP
1100 if (err < 0) {
1101 printf("usb_new_device: Cannot read configuration, " \
1102 "skipping device %04x:%04x\n",
1103 dev->descriptor.idVendor, dev->descriptor.idProduct);
c75f57fb 1104 free(tmpbuf);
0ed27905 1105 return err;
8b8d779d 1106 }
f5766139 1107 usb_parse_config(dev, tmpbuf, 0);
c75f57fb 1108 free(tmpbuf);
affae2bf 1109 usb_set_maxpacket(dev);
0ed27905
SG
1110 /*
1111 * we set the default configuration here
1112 * This seems premature. If the driver wants a different configuration
1113 * it will need to select itself.
1114 */
1115 err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue);
1116 if (err < 0) {
6f5794a6
RB
1117 printf("failed to set default configuration " \
1118 "len %d, status %lX\n", dev->act_len, dev->status);
0ed27905 1119 return err;
affae2bf 1120 }
f647bf0b
MV
1121
1122 /*
1123 * Wait until the Set Configuration request gets processed by the
1124 * device. This is required by at least SanDisk Cruzer Pop USB 2.0
1125 * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller.
1126 */
1127 mdelay(10);
1128
ceb4972a
VG
1129 debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n",
1130 dev->descriptor.iManufacturer, dev->descriptor.iProduct,
1131 dev->descriptor.iSerialNumber);
affae2bf
WD
1132 memset(dev->mf, 0, sizeof(dev->mf));
1133 memset(dev->prod, 0, sizeof(dev->prod));
1134 memset(dev->serial, 0, sizeof(dev->serial));
1135 if (dev->descriptor.iManufacturer)
6f5794a6
RB
1136 usb_string(dev, dev->descriptor.iManufacturer,
1137 dev->mf, sizeof(dev->mf));
affae2bf 1138 if (dev->descriptor.iProduct)
6f5794a6
RB
1139 usb_string(dev, dev->descriptor.iProduct,
1140 dev->prod, sizeof(dev->prod));
affae2bf 1141 if (dev->descriptor.iSerialNumber)
6f5794a6
RB
1142 usb_string(dev, dev->descriptor.iSerialNumber,
1143 dev->serial, sizeof(dev->serial));
ceb4972a
VG
1144 debug("Manufacturer %s\n", dev->mf);
1145 debug("Product %s\n", dev->prod);
1146 debug("SerialNumber %s\n", dev->serial);
0ed27905
SG
1147
1148 return 0;
1149}
1150
95fbfe42 1151int usb_setup_device(struct usb_device *dev, bool do_read,
9eb72dd1 1152 struct usb_device *parent)
0ed27905
SG
1153{
1154 int addr;
1155 int ret;
1156
1157 /* We still haven't set the Address yet */
1158 addr = dev->devnum;
1159 dev->devnum = 0;
1160
9eb72dd1 1161 ret = usb_prepare_device(dev, addr, do_read, parent);
0ed27905
SG
1162 if (ret)
1163 return ret;
1164 ret = usb_select_config(dev);
1165
1166 return ret;
1167}
1168
fd09c205 1169#if !CONFIG_IS_ENABLED(DM_USB)
0ed27905
SG
1170/*
1171 * By the time we get here, the device has gotten a new device ID
1172 * and is in the default state. We need to identify the thing and
1173 * get the ball rolling..
1174 *
1175 * Returns 0 for success, != 0 for error.
1176 */
1177int usb_new_device(struct usb_device *dev)
1178{
1179 bool do_read = true;
1180 int err;
1181
1182 /*
1183 * XHCI needs to issue a Address device command to setup
1184 * proper device context structures, before it can interact
1185 * with the device. So a get_descriptor will fail before any
1186 * of that is done for XHCI unlike EHCI.
1187 */
0a8cc1a3 1188#ifdef CONFIG_USB_XHCI_HCD
0ed27905
SG
1189 do_read = false;
1190#endif
9eb72dd1 1191 err = usb_setup_device(dev, do_read, dev->parent);
0ed27905
SG
1192 if (err)
1193 return err;
1194
1195 /* Now probe if the device is a hub */
1196 err = usb_hub_probe(dev, 0);
1197 if (err < 0)
1198 return err;
1199
affae2bf
WD
1200 return 0;
1201}
95fbfe42 1202#endif
affae2bf 1203
16297cfb 1204__weak
bba67914 1205int board_usb_init(int index, enum usb_init_type init)
16297cfb
MZ
1206{
1207 return 0;
1208}
db378d78
KVA
1209
1210__weak
1211int board_usb_cleanup(int index, enum usb_init_type init)
1212{
1213 return 0;
1214}
95fbfe42
SG
1215
1216bool usb_device_has_child_on_port(struct usb_device *parent, int port)
1217{
fd09c205 1218#if CONFIG_IS_ENABLED(DM_USB)
95fbfe42
SG
1219 return false;
1220#else
1221 return parent->children[port] != NULL;
1222#endif
1223}
1224
fd09c205 1225#if CONFIG_IS_ENABLED(DM_USB)
faa7db24
SB
1226void usb_find_usb2_hub_address_port(struct usb_device *udev,
1227 uint8_t *hub_address, uint8_t *hub_port)
1228{
1229 struct udevice *parent;
1230 struct usb_device *uparent, *ttdev;
1231
1232 /*
1233 * When called from usb-uclass.c: usb_scan_device() udev->dev points
1234 * to the parent udevice, not the actual udevice belonging to the
1235 * udev as the device is not instantiated yet. So when searching
1236 * for the first usb-2 parent start with udev->dev not
1237 * udev->dev->parent .
1238 */
1239 ttdev = udev;
1240 parent = udev->dev;
1241 uparent = dev_get_parent_priv(parent);
1242
1243 while (uparent->speed != USB_SPEED_HIGH) {
1244 struct udevice *dev = parent;
1245
1246 if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) {
1247 printf("Error: Cannot find high speed parent of usb-1 device\n");
1248 *hub_address = 0;
1249 *hub_port = 0;
1250 return;
1251 }
1252
1253 ttdev = dev_get_parent_priv(dev);
1254 parent = dev->parent;
1255 uparent = dev_get_parent_priv(parent);
1256 }
1257 *hub_address = uparent->devnum;
1258 *hub_port = ttdev->portnr;
1259}
1260#else
1261void usb_find_usb2_hub_address_port(struct usb_device *udev,
1262 uint8_t *hub_address, uint8_t *hub_port)
1263{
1264 /* Find out the nearest parent which is high speed */
1265 while (udev->parent->parent != NULL)
1266 if (udev->parent->speed != USB_SPEED_HIGH) {
1267 udev = udev->parent;
1268 } else {
1269 *hub_address = udev->parent->devnum;
1270 *hub_port = udev->portnr;
1271 return;
1272 }
1273
1274 printf("Error: Cannot find high speed parent of usb-1 device\n");
1275 *hub_address = 0;
1276 *hub_port = 0;
1277}
1278#endif
1279
1280
affae2bf 1281/* EOF */