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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 | 42 | static int asynch_allowed; |
e51aae38 BS |
43 | char usb_started; /* flag for the started/stopped USB status */ |
44 | ||
fd09c205 | 45 | #if !CONFIG_IS_ENABLED(DM_USB) |
95fbfe42 SG |
46 | static struct usb_device usb_dev[USB_MAX_DEVICE]; |
47 | static 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 |
56 | int 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 | */ | |
130 | int 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 | */ | |
151 | int 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 | 179 | int 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 | */ | |
197 | int 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 | */ | |
212 | int 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 | */ | |
264 | int 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 | 293 | int 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 | 313 | static void noinline |
5e8baf87 | 314 | usb_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 | 354 | static 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 |
370 | static 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 | */ | |
525 | int 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 | 554 | static 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 | 566 | int 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 | */ | |
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; | |
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 | 608 | static 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 | */ | |
619 | int 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 | 657 | static 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 | */ | |
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 | */ | |
6f5794a6 RB |
697 | int 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 | */ | |
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 | */ | |
c08b1b26 | 720 | static 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 | ||
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 | } | |
affae2bf WD |
753 | } |
754 | ||
9c998aa8 WD |
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) | |
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 | */ | |
796 | int 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 | 857 | struct 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 | 865 | int 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 | 891 | void 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 | 911 | static 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 | 919 | static 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 | ||
944 | static 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 | 1019 | static 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 | 1068 | int 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 | 1151 | int 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 | */ | |
1177 | int 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 | 1205 | int board_usb_init(int index, enum usb_init_type init) |
16297cfb MZ |
1206 | { |
1207 | return 0; | |
1208 | } | |
db378d78 KVA |
1209 | |
1210 | __weak | |
1211 | int board_usb_cleanup(int index, enum usb_init_type init) | |
1212 | { | |
1213 | return 0; | |
1214 | } | |
95fbfe42 SG |
1215 | |
1216 | bool 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 |
1226 | void 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 | |
1261 | void 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 */ |