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1 | /* | |
2 | * Most of this source has been derived from the Linux USB | |
3 | * project: | |
4 | * (C) Copyright Linus Torvalds 1999 | |
5 | * (C) Copyright Johannes Erdfelt 1999-2001 | |
6 | * (C) Copyright Andreas Gal 1999 | |
7 | * (C) Copyright Gregory P. Smith 1999 | |
8 | * (C) Copyright Deti Fliegl 1999 (new USB architecture) | |
9 | * (C) Copyright Randy Dunlap 2000 | |
10 | * (C) Copyright David Brownell 2000 (kernel hotplug, usb_device_id) | |
11 | * (C) Copyright Yggdrasil Computing, Inc. 2000 | |
12 | * (usb_device_id matching changes by Adam J. Richter) | |
13 | * | |
14 | * Adapted for U-Boot: | |
15 | * (C) Copyright 2001 Denis Peter, MPL AG Switzerland | |
16 | * | |
17 | * SPDX-License-Identifier: GPL-2.0+ | |
18 | */ | |
19 | ||
20 | /* | |
21 | * How it works: | |
22 | * | |
23 | * Since this is a bootloader, the devices will not be automatic | |
24 | * (re)configured on hotplug, but after a restart of the USB the | |
25 | * device should work. | |
26 | * | |
27 | * For each transfer (except "Interrupt") we wait for completion. | |
28 | */ | |
29 | #include <common.h> | |
30 | #include <command.h> | |
31 | #include <dm.h> | |
32 | #include <memalign.h> | |
33 | #include <asm/processor.h> | |
34 | #include <linux/compiler.h> | |
35 | #include <linux/ctype.h> | |
36 | #include <asm/byteorder.h> | |
37 | #include <asm/unaligned.h> | |
38 | #include <errno.h> | |
39 | #include <usb.h> | |
40 | ||
41 | #define USB_BUFSIZ 512 | |
42 | ||
43 | static int asynch_allowed; | |
44 | char usb_started; /* flag for the started/stopped USB status */ | |
45 | ||
46 | #ifndef CONFIG_DM_USB | |
47 | static struct usb_device usb_dev[USB_MAX_DEVICE]; | |
48 | static int dev_index; | |
49 | ||
50 | #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT | |
51 | #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 | |
52 | #endif | |
53 | ||
54 | /*************************************************************************** | |
55 | * Init USB Device | |
56 | */ | |
57 | int usb_init(void) | |
58 | { | |
59 | void *ctrl; | |
60 | struct usb_device *dev; | |
61 | int i, start_index = 0; | |
62 | int controllers_initialized = 0; | |
63 | int ret; | |
64 | ||
65 | dev_index = 0; | |
66 | asynch_allowed = 1; | |
67 | usb_hub_reset(); | |
68 | ||
69 | /* first make all devices unknown */ | |
70 | for (i = 0; i < USB_MAX_DEVICE; i++) { | |
71 | memset(&usb_dev[i], 0, sizeof(struct usb_device)); | |
72 | usb_dev[i].devnum = -1; | |
73 | } | |
74 | ||
75 | /* init low_level USB */ | |
76 | for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { | |
77 | /* init low_level USB */ | |
78 | printf("USB%d: ", i); | |
79 | ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl); | |
80 | if (ret == -ENODEV) { /* No such device. */ | |
81 | puts("Port not available.\n"); | |
82 | controllers_initialized++; | |
83 | continue; | |
84 | } | |
85 | ||
86 | if (ret) { /* Other error. */ | |
87 | puts("lowlevel init failed\n"); | |
88 | continue; | |
89 | } | |
90 | /* | |
91 | * lowlevel init is OK, now scan the bus for devices | |
92 | * i.e. search HUBs and configure them | |
93 | */ | |
94 | controllers_initialized++; | |
95 | start_index = dev_index; | |
96 | printf("scanning bus %d for devices... ", i); | |
97 | ret = usb_alloc_new_device(ctrl, &dev); | |
98 | if (ret) | |
99 | break; | |
100 | ||
101 | /* | |
102 | * device 0 is always present | |
103 | * (root hub, so let it analyze) | |
104 | */ | |
105 | ret = usb_new_device(dev); | |
106 | if (ret) | |
107 | usb_free_device(dev->controller); | |
108 | ||
109 | if (start_index == dev_index) { | |
110 | puts("No USB Device found\n"); | |
111 | continue; | |
112 | } else { | |
113 | printf("%d USB Device(s) found\n", | |
114 | dev_index - start_index); | |
115 | } | |
116 | ||
117 | usb_started = 1; | |
118 | } | |
119 | ||
120 | debug("scan end\n"); | |
121 | /* if we were not able to find at least one working bus, bail out */ | |
122 | if (controllers_initialized == 0) | |
123 | puts("USB error: all controllers failed lowlevel init\n"); | |
124 | ||
125 | return usb_started ? 0 : -ENODEV; | |
126 | } | |
127 | ||
128 | /****************************************************************************** | |
129 | * Stop USB this stops the LowLevel Part and deregisters USB devices. | |
130 | */ | |
131 | int usb_stop(void) | |
132 | { | |
133 | int i; | |
134 | ||
135 | if (usb_started) { | |
136 | asynch_allowed = 1; | |
137 | usb_started = 0; | |
138 | usb_hub_reset(); | |
139 | ||
140 | for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { | |
141 | if (usb_lowlevel_stop(i)) | |
142 | printf("failed to stop USB controller %d\n", i); | |
143 | } | |
144 | } | |
145 | ||
146 | return 0; | |
147 | } | |
148 | ||
149 | /****************************************************************************** | |
150 | * Detect if a USB device has been plugged or unplugged. | |
151 | */ | |
152 | int usb_detect_change(void) | |
153 | { | |
154 | int i, j; | |
155 | int change = 0; | |
156 | ||
157 | for (j = 0; j < USB_MAX_DEVICE; j++) { | |
158 | for (i = 0; i < usb_dev[j].maxchild; i++) { | |
159 | struct usb_port_status status; | |
160 | ||
161 | if (usb_get_port_status(&usb_dev[j], i + 1, | |
162 | &status) < 0) | |
163 | /* USB request failed */ | |
164 | continue; | |
165 | ||
166 | if (le16_to_cpu(status.wPortChange) & | |
167 | USB_PORT_STAT_C_CONNECTION) | |
168 | change++; | |
169 | } | |
170 | } | |
171 | ||
172 | return change; | |
173 | } | |
174 | ||
175 | /* | |
176 | * disables the asynch behaviour of the control message. This is used for data | |
177 | * transfers that uses the exclusiv access to the control and bulk messages. | |
178 | * Returns the old value so it can be restored later. | |
179 | */ | |
180 | int usb_disable_asynch(int disable) | |
181 | { | |
182 | int old_value = asynch_allowed; | |
183 | ||
184 | asynch_allowed = !disable; | |
185 | return old_value; | |
186 | } | |
187 | #endif /* !CONFIG_DM_USB */ | |
188 | ||
189 | ||
190 | /*------------------------------------------------------------------- | |
191 | * Message wrappers. | |
192 | * | |
193 | */ | |
194 | ||
195 | /* | |
196 | * submits an Interrupt Message | |
197 | */ | |
198 | int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, | |
199 | void *buffer, int transfer_len, int interval) | |
200 | { | |
201 | return submit_int_msg(dev, pipe, buffer, transfer_len, interval); | |
202 | } | |
203 | ||
204 | /* | |
205 | * submits a control message and waits for comletion (at least timeout * 1ms) | |
206 | * If timeout is 0, we don't wait for completion (used as example to set and | |
207 | * clear keyboards LEDs). For data transfers, (storage transfers) we don't | |
208 | * allow control messages with 0 timeout, by previousely resetting the flag | |
209 | * asynch_allowed (usb_disable_asynch(1)). | |
210 | * returns the transferred length if OK or -1 if error. The transferred length | |
211 | * and the current status are stored in the dev->act_len and dev->status. | |
212 | */ | |
213 | int usb_control_msg(struct usb_device *dev, unsigned int pipe, | |
214 | unsigned char request, unsigned char requesttype, | |
215 | unsigned short value, unsigned short index, | |
216 | void *data, unsigned short size, int timeout) | |
217 | { | |
218 | ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1); | |
219 | int err; | |
220 | ||
221 | if ((timeout == 0) && (!asynch_allowed)) { | |
222 | /* request for a asynch control pipe is not allowed */ | |
223 | return -EINVAL; | |
224 | } | |
225 | ||
226 | /* set setup command */ | |
227 | setup_packet->requesttype = requesttype; | |
228 | setup_packet->request = request; | |
229 | setup_packet->value = cpu_to_le16(value); | |
230 | setup_packet->index = cpu_to_le16(index); | |
231 | setup_packet->length = cpu_to_le16(size); | |
232 | debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ | |
233 | "value 0x%X index 0x%X length 0x%X\n", | |
234 | request, requesttype, value, index, size); | |
235 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ | |
236 | ||
237 | err = submit_control_msg(dev, pipe, data, size, setup_packet); | |
238 | if (err < 0) | |
239 | return err; | |
240 | if (timeout == 0) | |
241 | return (int)size; | |
242 | ||
243 | /* | |
244 | * Wait for status to update until timeout expires, USB driver | |
245 | * interrupt handler may set the status when the USB operation has | |
246 | * been completed. | |
247 | */ | |
248 | while (timeout--) { | |
249 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
250 | break; | |
251 | mdelay(1); | |
252 | } | |
253 | if (dev->status) | |
254 | return -1; | |
255 | ||
256 | return dev->act_len; | |
257 | ||
258 | } | |
259 | ||
260 | /*------------------------------------------------------------------- | |
261 | * submits bulk message, and waits for completion. returns 0 if Ok or | |
262 | * negative if Error. | |
263 | * synchronous behavior | |
264 | */ | |
265 | int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, | |
266 | void *data, int len, int *actual_length, int timeout) | |
267 | { | |
268 | if (len < 0) | |
269 | return -EINVAL; | |
270 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ | |
271 | if (submit_bulk_msg(dev, pipe, data, len) < 0) | |
272 | return -EIO; | |
273 | while (timeout--) { | |
274 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
275 | break; | |
276 | mdelay(1); | |
277 | } | |
278 | *actual_length = dev->act_len; | |
279 | if (dev->status == 0) | |
280 | return 0; | |
281 | else | |
282 | return -EIO; | |
283 | } | |
284 | ||
285 | ||
286 | /*------------------------------------------------------------------- | |
287 | * Max Packet stuff | |
288 | */ | |
289 | ||
290 | /* | |
291 | * returns the max packet size, depending on the pipe direction and | |
292 | * the configurations values | |
293 | */ | |
294 | int usb_maxpacket(struct usb_device *dev, unsigned long pipe) | |
295 | { | |
296 | /* direction is out -> use emaxpacket out */ | |
297 | if ((pipe & USB_DIR_IN) == 0) | |
298 | return dev->epmaxpacketout[((pipe>>15) & 0xf)]; | |
299 | else | |
300 | return dev->epmaxpacketin[((pipe>>15) & 0xf)]; | |
301 | } | |
302 | ||
303 | /* | |
304 | * The routine usb_set_maxpacket_ep() is extracted from the loop of routine | |
305 | * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine | |
306 | * when it is inlined in 1 single routine. What happens is that the register r3 | |
307 | * is used as loop-count 'i', but gets overwritten later on. | |
308 | * This is clearly a compiler bug, but it is easier to workaround it here than | |
309 | * to update the compiler (Occurs with at least several GCC 4.{1,2},x | |
310 | * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM) | |
311 | * | |
312 | * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5. | |
313 | */ | |
314 | static void noinline | |
315 | usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx) | |
316 | { | |
317 | int b; | |
318 | struct usb_endpoint_descriptor *ep; | |
319 | u16 ep_wMaxPacketSize; | |
320 | ||
321 | ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx]; | |
322 | ||
323 | b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
324 | ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize); | |
325 | ||
326 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == | |
327 | USB_ENDPOINT_XFER_CONTROL) { | |
328 | /* Control => bidirectional */ | |
329 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; | |
330 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
331 | debug("##Control EP epmaxpacketout/in[%d] = %d\n", | |
332 | b, dev->epmaxpacketin[b]); | |
333 | } else { | |
334 | if ((ep->bEndpointAddress & 0x80) == 0) { | |
335 | /* OUT Endpoint */ | |
336 | if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) { | |
337 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; | |
338 | debug("##EP epmaxpacketout[%d] = %d\n", | |
339 | b, dev->epmaxpacketout[b]); | |
340 | } | |
341 | } else { | |
342 | /* IN Endpoint */ | |
343 | if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) { | |
344 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
345 | debug("##EP epmaxpacketin[%d] = %d\n", | |
346 | b, dev->epmaxpacketin[b]); | |
347 | } | |
348 | } /* if out */ | |
349 | } /* if control */ | |
350 | } | |
351 | ||
352 | /* | |
353 | * set the max packed value of all endpoints in the given configuration | |
354 | */ | |
355 | static int usb_set_maxpacket(struct usb_device *dev) | |
356 | { | |
357 | int i, ii; | |
358 | ||
359 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) | |
360 | for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++) | |
361 | usb_set_maxpacket_ep(dev, i, ii); | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | /******************************************************************************* | |
367 | * Parse the config, located in buffer, and fills the dev->config structure. | |
368 | * Note that all little/big endian swapping are done automatically. | |
369 | * (wTotalLength has already been swapped and sanitized when it was read.) | |
370 | */ | |
371 | static int usb_parse_config(struct usb_device *dev, | |
372 | unsigned char *buffer, int cfgno) | |
373 | { | |
374 | struct usb_descriptor_header *head; | |
375 | int index, ifno, epno, curr_if_num; | |
376 | u16 ep_wMaxPacketSize; | |
377 | struct usb_interface *if_desc = NULL; | |
378 | ||
379 | ifno = -1; | |
380 | epno = -1; | |
381 | curr_if_num = -1; | |
382 | ||
383 | dev->configno = cfgno; | |
384 | head = (struct usb_descriptor_header *) &buffer[0]; | |
385 | if (head->bDescriptorType != USB_DT_CONFIG) { | |
386 | printf(" ERROR: NOT USB_CONFIG_DESC %x\n", | |
387 | head->bDescriptorType); | |
388 | return -EINVAL; | |
389 | } | |
390 | if (head->bLength != USB_DT_CONFIG_SIZE) { | |
391 | printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength); | |
392 | return -EINVAL; | |
393 | } | |
394 | memcpy(&dev->config, head, USB_DT_CONFIG_SIZE); | |
395 | dev->config.no_of_if = 0; | |
396 | ||
397 | index = dev->config.desc.bLength; | |
398 | /* Ok the first entry must be a configuration entry, | |
399 | * now process the others */ | |
400 | head = (struct usb_descriptor_header *) &buffer[index]; | |
401 | while (index + 1 < dev->config.desc.wTotalLength && head->bLength) { | |
402 | switch (head->bDescriptorType) { | |
403 | case USB_DT_INTERFACE: | |
404 | if (head->bLength != USB_DT_INTERFACE_SIZE) { | |
405 | printf("ERROR: Invalid USB IF length (%d)\n", | |
406 | head->bLength); | |
407 | break; | |
408 | } | |
409 | if (index + USB_DT_INTERFACE_SIZE > | |
410 | dev->config.desc.wTotalLength) { | |
411 | puts("USB IF descriptor overflowed buffer!\n"); | |
412 | break; | |
413 | } | |
414 | if (((struct usb_interface_descriptor *) \ | |
415 | head)->bInterfaceNumber != curr_if_num) { | |
416 | /* this is a new interface, copy new desc */ | |
417 | ifno = dev->config.no_of_if; | |
418 | if (ifno >= USB_MAXINTERFACES) { | |
419 | puts("Too many USB interfaces!\n"); | |
420 | /* try to go on with what we have */ | |
421 | return -EINVAL; | |
422 | } | |
423 | if_desc = &dev->config.if_desc[ifno]; | |
424 | dev->config.no_of_if++; | |
425 | memcpy(if_desc, head, | |
426 | USB_DT_INTERFACE_SIZE); | |
427 | if_desc->no_of_ep = 0; | |
428 | if_desc->num_altsetting = 1; | |
429 | curr_if_num = | |
430 | if_desc->desc.bInterfaceNumber; | |
431 | } else { | |
432 | /* found alternate setting for the interface */ | |
433 | if (ifno >= 0) { | |
434 | if_desc = &dev->config.if_desc[ifno]; | |
435 | if_desc->num_altsetting++; | |
436 | } | |
437 | } | |
438 | break; | |
439 | case USB_DT_ENDPOINT: | |
440 | if (head->bLength != USB_DT_ENDPOINT_SIZE) { | |
441 | printf("ERROR: Invalid USB EP length (%d)\n", | |
442 | head->bLength); | |
443 | break; | |
444 | } | |
445 | if (index + USB_DT_ENDPOINT_SIZE > | |
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 | } | |
454 | epno = dev->config.if_desc[ifno].no_of_ep; | |
455 | if_desc = &dev->config.if_desc[ifno]; | |
456 | if (epno >= USB_MAXENDPOINTS) { | |
457 | printf("Interface %d has too many endpoints!\n", | |
458 | if_desc->desc.bInterfaceNumber); | |
459 | return -EINVAL; | |
460 | } | |
461 | /* found an endpoint */ | |
462 | if_desc->no_of_ep++; | |
463 | memcpy(&if_desc->ep_desc[epno], head, | |
464 | USB_DT_ENDPOINT_SIZE); | |
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); | |
474 | debug("if %d, ep %d\n", ifno, epno); | |
475 | break; | |
476 | case USB_DT_SS_ENDPOINT_COMP: | |
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 | } | |
491 | if_desc = &dev->config.if_desc[ifno]; | |
492 | memcpy(&if_desc->ss_ep_comp_desc[epno], head, | |
493 | USB_DT_SS_EP_COMP_SIZE); | |
494 | break; | |
495 | default: | |
496 | if (head->bLength == 0) | |
497 | return -EINVAL; | |
498 | ||
499 | debug("unknown Description Type : %x\n", | |
500 | head->bDescriptorType); | |
501 | ||
502 | #ifdef DEBUG | |
503 | { | |
504 | unsigned char *ch = (unsigned char *)head; | |
505 | int i; | |
506 | ||
507 | for (i = 0; i < head->bLength; i++) | |
508 | debug("%02X ", *ch++); | |
509 | debug("\n\n\n"); | |
510 | } | |
511 | #endif | |
512 | break; | |
513 | } | |
514 | index += head->bLength; | |
515 | head = (struct usb_descriptor_header *)&buffer[index]; | |
516 | } | |
517 | return 0; | |
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 | */ | |
525 | int usb_clear_halt(struct usb_device *dev, int pipe) | |
526 | { | |
527 | int result; | |
528 | int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); | |
529 | ||
530 | result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
531 | USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, | |
532 | endp, NULL, 0, USB_CNTL_TIMEOUT * 3); | |
533 | ||
534 | /* don't clear if failed */ | |
535 | if (result < 0) | |
536 | return result; | |
537 | ||
538 | /* | |
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 | ||
543 | usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); | |
544 | ||
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 | */ | |
554 | static int usb_get_descriptor(struct usb_device *dev, unsigned char type, | |
555 | unsigned char index, void *buf, int size) | |
556 | { | |
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); | |
561 | } | |
562 | ||
563 | /********************************************************************** | |
564 | * gets len of configuration cfgno | |
565 | */ | |
566 | int usb_get_configuration_len(struct usb_device *dev, int cfgno) | |
567 | { | |
568 | int result; | |
569 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, buffer, 9); | |
570 | struct usb_config_descriptor *config; | |
571 | ||
572 | config = (struct usb_config_descriptor *)&buffer[0]; | |
573 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9); | |
574 | if (result < 9) { | |
575 | if (result < 0) | |
576 | printf("unable to get descriptor, error %lX\n", | |
577 | dev->status); | |
578 | else | |
579 | printf("config descriptor too short " \ | |
580 | "(expected %i, got %i)\n", 9, result); | |
581 | return -EIO; | |
582 | } | |
583 | return le16_to_cpu(config->wTotalLength); | |
584 | } | |
585 | ||
586 | /********************************************************************** | |
587 | * gets configuration cfgno and store it in the buffer | |
588 | */ | |
589 | int 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; | |
594 | ||
595 | config = (struct usb_config_descriptor *)&buffer[0]; | |
596 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length); | |
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 */ | |
600 | ||
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 | */ | |
608 | static int usb_set_address(struct usb_device *dev) | |
609 | { | |
610 | debug("set address %d\n", dev->devnum); | |
611 | ||
612 | return usb_control_msg(dev, usb_snddefctrl(dev), USB_REQ_SET_ADDRESS, | |
613 | 0, (dev->devnum), 0, NULL, 0, USB_CNTL_TIMEOUT); | |
614 | } | |
615 | ||
616 | /******************************************************************** | |
617 | * set interface number to interface | |
618 | */ | |
619 | int usb_set_interface(struct usb_device *dev, int interface, int alternate) | |
620 | { | |
621 | struct usb_interface *if_face = NULL; | |
622 | int ret, i; | |
623 | ||
624 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) { | |
625 | if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) { | |
626 | if_face = &dev->config.if_desc[i]; | |
627 | break; | |
628 | } | |
629 | } | |
630 | if (!if_face) { | |
631 | printf("selecting invalid interface %d", interface); | |
632 | return -EINVAL; | |
633 | } | |
634 | /* | |
635 | * We should return now for devices with only one alternate setting. | |
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. | |
640 | */ | |
641 | if (if_face->num_altsetting == 1) | |
642 | return 0; | |
643 | ||
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) | |
649 | return ret; | |
650 | ||
651 | return 0; | |
652 | } | |
653 | ||
654 | /******************************************************************** | |
655 | * set configuration number to configuration | |
656 | */ | |
657 | static int usb_set_configuration(struct usb_device *dev, int configuration) | |
658 | { | |
659 | int res; | |
660 | debug("set configuration %d\n", configuration); | |
661 | /* set setup command */ | |
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) { | |
667 | dev->toggle[0] = 0; | |
668 | dev->toggle[1] = 0; | |
669 | return 0; | |
670 | } else | |
671 | return -EIO; | |
672 | } | |
673 | ||
674 | /******************************************************************** | |
675 | * set protocol to protocol | |
676 | */ | |
677 | int 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 | */ | |
687 | int 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 | */ | |
697 | int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, | |
698 | unsigned char id, void *buf, int size) | |
699 | { | |
700 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
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); | |
704 | } | |
705 | ||
706 | /******************************************************************** | |
707 | * get class descriptor | |
708 | */ | |
709 | int 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 | */ | |
720 | static int usb_get_string(struct usb_device *dev, unsigned short langid, | |
721 | unsigned char index, void *buf, int size) | |
722 | { | |
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, | |
730 | (USB_DT_STRING << 8) + index, langid, buf, size, | |
731 | USB_CNTL_TIMEOUT); | |
732 | ||
733 | if (result > 0) | |
734 | break; | |
735 | } | |
736 | ||
737 | return result; | |
738 | } | |
739 | ||
740 | ||
741 | static 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 | } | |
753 | } | |
754 | ||
755 | ||
756 | static 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) | |
785 | rc = -EINVAL; | |
786 | ||
787 | return rc; | |
788 | } | |
789 | ||
790 | ||
791 | /******************************************************************** | |
792 | * usb_string: | |
793 | * Get string index and translate it to ascii. | |
794 | * returns string length (> 0) or error (< 0) | |
795 | */ | |
796 | int usb_string(struct usb_device *dev, int index, char *buf, size_t size) | |
797 | { | |
798 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ); | |
799 | unsigned char *tbuf; | |
800 | int err; | |
801 | unsigned int u, idx; | |
802 | ||
803 | if (size <= 0 || !buf || !index) | |
804 | return -EINVAL; | |
805 | buf[0] = 0; | |
806 | tbuf = &mybuf[0]; | |
807 | ||
808 | /* get langid for strings if it's not yet known */ | |
809 | if (!dev->have_langid) { | |
810 | err = usb_string_sub(dev, 0, 0, tbuf); | |
811 | if (err < 0) { | |
812 | debug("error getting string descriptor 0 " \ | |
813 | "(error=%lx)\n", dev->status); | |
814 | return -EIO; | |
815 | } else if (tbuf[0] < 4) { | |
816 | debug("string descriptor 0 too short\n"); | |
817 | return -EIO; | |
818 | } else { | |
819 | dev->have_langid = -1; | |
820 | dev->string_langid = tbuf[2] | (tbuf[3] << 8); | |
821 | /* always use the first langid listed */ | |
822 | debug("USB device number %d default " \ | |
823 | "language ID 0x%x\n", | |
824 | dev->devnum, dev->string_langid); | |
825 | } | |
826 | } | |
827 | ||
828 | err = usb_string_sub(dev, dev->string_langid, index, tbuf); | |
829 | if (err < 0) | |
830 | return err; | |
831 | ||
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 | ||
852 | #ifndef CONFIG_DM_USB | |
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 | */ | |
857 | struct usb_device *usb_get_dev_index(int index) | |
858 | { | |
859 | if (usb_dev[index].devnum == -1) | |
860 | return NULL; | |
861 | else | |
862 | return &usb_dev[index]; | |
863 | } | |
864 | ||
865 | int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp) | |
866 | { | |
867 | int i; | |
868 | debug("New Device %d\n", dev_index); | |
869 | if (dev_index == USB_MAX_DEVICE) { | |
870 | printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); | |
871 | return -ENOSPC; | |
872 | } | |
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; | |
879 | usb_dev[dev_index].controller = controller; | |
880 | dev_index++; | |
881 | *devp = &usb_dev[dev_index - 1]; | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
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 | */ | |
891 | void usb_free_device(struct udevice *controller) | |
892 | { | |
893 | dev_index--; | |
894 | debug("Freeing device node: %d\n", dev_index); | |
895 | memset(&usb_dev[dev_index], 0, sizeof(struct usb_device)); | |
896 | usb_dev[dev_index].devnum = -1; | |
897 | } | |
898 | ||
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 | } | |
909 | #endif /* !CONFIG_DM_USB */ | |
910 | ||
911 | static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub) | |
912 | { | |
913 | if (!hub) | |
914 | usb_reset_root_port(dev); | |
915 | ||
916 | return 0; | |
917 | } | |
918 | ||
919 | static int get_descriptor_len(struct usb_device *dev, int len, int expect_len) | |
920 | { | |
921 | __maybe_unused struct usb_device_descriptor *desc; | |
922 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); | |
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 | ||
944 | static int usb_setup_descriptor(struct usb_device *dev, bool do_read) | |
945 | { | |
946 | /* | |
947 | * This is a Windows scheme of initialization sequence, with double | |
948 | * reset of the device (Linux uses the same sequence) | |
949 | * Some equipment is said to work only with such init sequence; this | |
950 | * patch is based on the work by Alan Stern: | |
951 | * http://sourceforge.net/mailarchive/forum.php? | |
952 | * thread_id=5729457&forum_id=5398 | |
953 | */ | |
954 | ||
955 | /* | |
956 | * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is | |
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 | |
959 | * some more, or keeps on retransmitting the 8 byte header. | |
960 | */ | |
961 | ||
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; | |
971 | ||
972 | if (do_read) { | |
973 | int err; | |
974 | ||
975 | /* | |
976 | * Validate we've received only at least 8 bytes, not that we've | |
977 | * received the entire descriptor. The reasoning is: | |
978 | * - The code only uses fields in the first 8 bytes, so that's all we | |
979 | * need to have fetched at this stage. | |
980 | * - The smallest maxpacket size is 8 bytes. Before we know the actual | |
981 | * maxpacket the device uses, the USB controller may only accept a | |
982 | * single packet. Consequently we are only guaranteed to receive 1 | |
983 | * packet (at least 8 bytes) even in a non-error case. | |
984 | * | |
985 | * At least the DWC2 controller needs to be programmed with the number | |
986 | * of packets in addition to the number of bytes. A request for 64 | |
987 | * bytes of data with the maxpacket guessed as 64 (above) yields a | |
988 | * request for 1 packet. | |
989 | */ | |
990 | err = get_descriptor_len(dev, 64, 8); | |
991 | if (err) | |
992 | return err; | |
993 | } | |
994 | ||
995 | dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; | |
996 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; | |
997 | switch (dev->descriptor.bMaxPacketSize0) { | |
998 | case 8: | |
999 | dev->maxpacketsize = PACKET_SIZE_8; | |
1000 | break; | |
1001 | case 16: | |
1002 | dev->maxpacketsize = PACKET_SIZE_16; | |
1003 | break; | |
1004 | case 32: | |
1005 | dev->maxpacketsize = PACKET_SIZE_32; | |
1006 | break; | |
1007 | case 64: | |
1008 | dev->maxpacketsize = PACKET_SIZE_64; | |
1009 | break; | |
1010 | default: | |
1011 | printf("usb_new_device: invalid max packet size\n"); | |
1012 | return -EIO; | |
1013 | } | |
1014 | ||
1015 | return 0; | |
1016 | } | |
1017 | ||
1018 | static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read, | |
1019 | struct usb_device *parent) | |
1020 | { | |
1021 | int err; | |
1022 | ||
1023 | /* | |
1024 | * Allocate usb 3.0 device context. | |
1025 | * USB 3.0 (xHCI) protocol tries to allocate device slot | |
1026 | * and related data structures first. This call does that. | |
1027 | * Refer to sec 4.3.2 in xHCI spec rev1.0 | |
1028 | */ | |
1029 | err = usb_alloc_device(dev); | |
1030 | if (err) { | |
1031 | printf("Cannot allocate device context to get SLOT_ID\n"); | |
1032 | return err; | |
1033 | } | |
1034 | err = usb_setup_descriptor(dev, do_read); | |
1035 | if (err) | |
1036 | return err; | |
1037 | err = usb_hub_port_reset(dev, parent); | |
1038 | if (err) | |
1039 | return err; | |
1040 | ||
1041 | dev->devnum = addr; | |
1042 | ||
1043 | err = usb_set_address(dev); /* set address */ | |
1044 | ||
1045 | if (err < 0) { | |
1046 | printf("\n USB device not accepting new address " \ | |
1047 | "(error=%lX)\n", dev->status); | |
1048 | return err; | |
1049 | } | |
1050 | ||
1051 | mdelay(10); /* Let the SET_ADDRESS settle */ | |
1052 | ||
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | int usb_select_config(struct usb_device *dev) | |
1057 | { | |
1058 | unsigned char *tmpbuf = NULL; | |
1059 | int err; | |
1060 | ||
1061 | err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE); | |
1062 | if (err) | |
1063 | return err; | |
1064 | ||
1065 | /* correct le values */ | |
1066 | le16_to_cpus(&dev->descriptor.bcdUSB); | |
1067 | le16_to_cpus(&dev->descriptor.idVendor); | |
1068 | le16_to_cpus(&dev->descriptor.idProduct); | |
1069 | le16_to_cpus(&dev->descriptor.bcdDevice); | |
1070 | ||
1071 | /* | |
1072 | * Kingston DT Ultimate 32GB USB 3.0 seems to be extremely sensitive | |
1073 | * about this first Get Descriptor request. If there are any other | |
1074 | * requests in the first microframe, the stick crashes. Wait about | |
1075 | * one microframe duration here (1mS for USB 1.x , 125uS for USB 2.0). | |
1076 | */ | |
1077 | mdelay(1); | |
1078 | ||
1079 | /* only support for one config for now */ | |
1080 | err = usb_get_configuration_len(dev, 0); | |
1081 | if (err >= 0) { | |
1082 | tmpbuf = (unsigned char *)malloc_cache_aligned(err); | |
1083 | if (!tmpbuf) | |
1084 | err = -ENOMEM; | |
1085 | else | |
1086 | err = usb_get_configuration_no(dev, 0, tmpbuf, err); | |
1087 | } | |
1088 | if (err < 0) { | |
1089 | printf("usb_new_device: Cannot read configuration, " \ | |
1090 | "skipping device %04x:%04x\n", | |
1091 | dev->descriptor.idVendor, dev->descriptor.idProduct); | |
1092 | free(tmpbuf); | |
1093 | return err; | |
1094 | } | |
1095 | usb_parse_config(dev, tmpbuf, 0); | |
1096 | free(tmpbuf); | |
1097 | usb_set_maxpacket(dev); | |
1098 | /* | |
1099 | * we set the default configuration here | |
1100 | * This seems premature. If the driver wants a different configuration | |
1101 | * it will need to select itself. | |
1102 | */ | |
1103 | err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue); | |
1104 | if (err < 0) { | |
1105 | printf("failed to set default configuration " \ | |
1106 | "len %d, status %lX\n", dev->act_len, dev->status); | |
1107 | return err; | |
1108 | } | |
1109 | ||
1110 | /* | |
1111 | * Wait until the Set Configuration request gets processed by the | |
1112 | * device. This is required by at least SanDisk Cruzer Pop USB 2.0 | |
1113 | * and Kingston DT Ultimate 32GB USB 3.0 on DWC2 OTG controller. | |
1114 | */ | |
1115 | mdelay(10); | |
1116 | ||
1117 | debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", | |
1118 | dev->descriptor.iManufacturer, dev->descriptor.iProduct, | |
1119 | dev->descriptor.iSerialNumber); | |
1120 | memset(dev->mf, 0, sizeof(dev->mf)); | |
1121 | memset(dev->prod, 0, sizeof(dev->prod)); | |
1122 | memset(dev->serial, 0, sizeof(dev->serial)); | |
1123 | if (dev->descriptor.iManufacturer) | |
1124 | usb_string(dev, dev->descriptor.iManufacturer, | |
1125 | dev->mf, sizeof(dev->mf)); | |
1126 | if (dev->descriptor.iProduct) | |
1127 | usb_string(dev, dev->descriptor.iProduct, | |
1128 | dev->prod, sizeof(dev->prod)); | |
1129 | if (dev->descriptor.iSerialNumber) | |
1130 | usb_string(dev, dev->descriptor.iSerialNumber, | |
1131 | dev->serial, sizeof(dev->serial)); | |
1132 | debug("Manufacturer %s\n", dev->mf); | |
1133 | debug("Product %s\n", dev->prod); | |
1134 | debug("SerialNumber %s\n", dev->serial); | |
1135 | ||
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | int usb_setup_device(struct usb_device *dev, bool do_read, | |
1140 | struct usb_device *parent) | |
1141 | { | |
1142 | int addr; | |
1143 | int ret; | |
1144 | ||
1145 | /* We still haven't set the Address yet */ | |
1146 | addr = dev->devnum; | |
1147 | dev->devnum = 0; | |
1148 | ||
1149 | ret = usb_prepare_device(dev, addr, do_read, parent); | |
1150 | if (ret) | |
1151 | return ret; | |
1152 | ret = usb_select_config(dev); | |
1153 | ||
1154 | return ret; | |
1155 | } | |
1156 | ||
1157 | #ifndef CONFIG_DM_USB | |
1158 | /* | |
1159 | * By the time we get here, the device has gotten a new device ID | |
1160 | * and is in the default state. We need to identify the thing and | |
1161 | * get the ball rolling.. | |
1162 | * | |
1163 | * Returns 0 for success, != 0 for error. | |
1164 | */ | |
1165 | int usb_new_device(struct usb_device *dev) | |
1166 | { | |
1167 | bool do_read = true; | |
1168 | int err; | |
1169 | ||
1170 | /* | |
1171 | * XHCI needs to issue a Address device command to setup | |
1172 | * proper device context structures, before it can interact | |
1173 | * with the device. So a get_descriptor will fail before any | |
1174 | * of that is done for XHCI unlike EHCI. | |
1175 | */ | |
1176 | #ifdef CONFIG_USB_XHCI_HCD | |
1177 | do_read = false; | |
1178 | #endif | |
1179 | err = usb_setup_device(dev, do_read, dev->parent); | |
1180 | if (err) | |
1181 | return err; | |
1182 | ||
1183 | /* Now probe if the device is a hub */ | |
1184 | err = usb_hub_probe(dev, 0); | |
1185 | if (err < 0) | |
1186 | return err; | |
1187 | ||
1188 | return 0; | |
1189 | } | |
1190 | #endif | |
1191 | ||
1192 | __weak | |
1193 | int board_usb_init(int index, enum usb_init_type init) | |
1194 | { | |
1195 | return 0; | |
1196 | } | |
1197 | ||
1198 | __weak | |
1199 | int board_usb_cleanup(int index, enum usb_init_type init) | |
1200 | { | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | bool usb_device_has_child_on_port(struct usb_device *parent, int port) | |
1205 | { | |
1206 | #ifdef CONFIG_DM_USB | |
1207 | return false; | |
1208 | #else | |
1209 | return parent->children[port] != NULL; | |
1210 | #endif | |
1211 | } | |
1212 | ||
1213 | #ifdef CONFIG_DM_USB | |
1214 | void usb_find_usb2_hub_address_port(struct usb_device *udev, | |
1215 | uint8_t *hub_address, uint8_t *hub_port) | |
1216 | { | |
1217 | struct udevice *parent; | |
1218 | struct usb_device *uparent, *ttdev; | |
1219 | ||
1220 | /* | |
1221 | * When called from usb-uclass.c: usb_scan_device() udev->dev points | |
1222 | * to the parent udevice, not the actual udevice belonging to the | |
1223 | * udev as the device is not instantiated yet. So when searching | |
1224 | * for the first usb-2 parent start with udev->dev not | |
1225 | * udev->dev->parent . | |
1226 | */ | |
1227 | ttdev = udev; | |
1228 | parent = udev->dev; | |
1229 | uparent = dev_get_parent_priv(parent); | |
1230 | ||
1231 | while (uparent->speed != USB_SPEED_HIGH) { | |
1232 | struct udevice *dev = parent; | |
1233 | ||
1234 | if (device_get_uclass_id(dev->parent) != UCLASS_USB_HUB) { | |
1235 | printf("Error: Cannot find high speed parent of usb-1 device\n"); | |
1236 | *hub_address = 0; | |
1237 | *hub_port = 0; | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | ttdev = dev_get_parent_priv(dev); | |
1242 | parent = dev->parent; | |
1243 | uparent = dev_get_parent_priv(parent); | |
1244 | } | |
1245 | *hub_address = uparent->devnum; | |
1246 | *hub_port = ttdev->portnr; | |
1247 | } | |
1248 | #else | |
1249 | void usb_find_usb2_hub_address_port(struct usb_device *udev, | |
1250 | uint8_t *hub_address, uint8_t *hub_port) | |
1251 | { | |
1252 | /* Find out the nearest parent which is high speed */ | |
1253 | while (udev->parent->parent != NULL) | |
1254 | if (udev->parent->speed != USB_SPEED_HIGH) { | |
1255 | udev = udev->parent; | |
1256 | } else { | |
1257 | *hub_address = udev->parent->devnum; | |
1258 | *hub_port = udev->portnr; | |
1259 | return; | |
1260 | } | |
1261 | ||
1262 | printf("Error: Cannot find high speed parent of usb-1 device\n"); | |
1263 | *hub_address = 0; | |
1264 | *hub_port = 0; | |
1265 | } | |
1266 | #endif | |
1267 | ||
1268 | ||
1269 | /* EOF */ |