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Commit | Line | Data |
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affae2bf | 1 | /* |
affae2bf | 2 | * Most of this source has been derived from the Linux USB |
460c322f WD |
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 | |
affae2bf | 16 | * |
1a459660 | 17 | * SPDX-License-Identifier: GPL-2.0+ |
affae2bf WD |
18 | */ |
19 | ||
affae2bf WD |
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> | |
95fbfe42 | 31 | #include <dm.h> |
cf92e05c | 32 | #include <memalign.h> |
affae2bf | 33 | #include <asm/processor.h> |
66cf6410 | 34 | #include <linux/compiler.h> |
9c998aa8 | 35 | #include <linux/ctype.h> |
c918261c | 36 | #include <asm/byteorder.h> |
b2fb47f1 | 37 | #include <asm/unaligned.h> |
97b9eb9e | 38 | #include <errno.h> |
affae2bf WD |
39 | #include <usb.h> |
40 | #ifdef CONFIG_4xx | |
3048bcbf | 41 | #include <asm/4xx_pci.h> |
affae2bf WD |
42 | #endif |
43 | ||
cd0a9de6 WD |
44 | #define USB_BUFSIZ 512 |
45 | ||
affae2bf | 46 | static int asynch_allowed; |
e51aae38 BS |
47 | char usb_started; /* flag for the started/stopped USB status */ |
48 | ||
95fbfe42 SG |
49 | #ifndef CONFIG_DM_USB |
50 | static struct usb_device usb_dev[USB_MAX_DEVICE]; | |
51 | static int dev_index; | |
52 | ||
93c2582f LS |
53 | #ifndef CONFIG_USB_MAX_CONTROLLER_COUNT |
54 | #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 | |
55 | #endif | |
affae2bf | 56 | |
affae2bf WD |
57 | /*************************************************************************** |
58 | * Init USB Device | |
59 | */ | |
affae2bf WD |
60 | int usb_init(void) |
61 | { | |
93c2582f LS |
62 | void *ctrl; |
63 | struct usb_device *dev; | |
64 | int i, start_index = 0; | |
d906bbc2 | 65 | int controllers_initialized = 0; |
97b9eb9e | 66 | int ret; |
affae2bf | 67 | |
6f5794a6 RB |
68 | dev_index = 0; |
69 | asynch_allowed = 1; | |
affae2bf | 70 | usb_hub_reset(); |
93c2582f LS |
71 | |
72 | /* first make all devices unknown */ | |
73 | for (i = 0; i < USB_MAX_DEVICE; i++) { | |
74 | memset(&usb_dev[i], 0, sizeof(struct usb_device)); | |
75 | usb_dev[i].devnum = -1; | |
76 | } | |
77 | ||
affae2bf | 78 | /* init low_level USB */ |
93c2582f LS |
79 | for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { |
80 | /* init low_level USB */ | |
81 | printf("USB%d: ", i); | |
97b9eb9e MV |
82 | ret = usb_lowlevel_init(i, USB_INIT_HOST, &ctrl); |
83 | if (ret == -ENODEV) { /* No such device. */ | |
84 | puts("Port not available.\n"); | |
d906bbc2 | 85 | controllers_initialized++; |
97b9eb9e MV |
86 | continue; |
87 | } | |
88 | ||
89 | if (ret) { /* Other error. */ | |
93c2582f LS |
90 | puts("lowlevel init failed\n"); |
91 | continue; | |
92 | } | |
93 | /* | |
94 | * lowlevel init is OK, now scan the bus for devices | |
95 | * i.e. search HUBs and configure them | |
96 | */ | |
d906bbc2 | 97 | controllers_initialized++; |
93c2582f LS |
98 | start_index = dev_index; |
99 | printf("scanning bus %d for devices... ", i); | |
79b58887 SG |
100 | ret = usb_alloc_new_device(ctrl, &dev); |
101 | if (ret) | |
8879be88 PK |
102 | break; |
103 | ||
93c2582f LS |
104 | /* |
105 | * device 0 is always present | |
106 | * (root hub, so let it analyze) | |
107 | */ | |
8879be88 PK |
108 | ret = usb_new_device(dev); |
109 | if (ret) | |
79b58887 | 110 | usb_free_device(dev->controller); |
93c2582f | 111 | |
8879be88 | 112 | if (start_index == dev_index) { |
93c2582f | 113 | puts("No USB Device found\n"); |
8879be88 PK |
114 | continue; |
115 | } else { | |
93c2582f LS |
116 | printf("%d USB Device(s) found\n", |
117 | dev_index - start_index); | |
8879be88 | 118 | } |
93c2582f | 119 | |
e51aae38 | 120 | usb_started = 1; |
93c2582f LS |
121 | } |
122 | ||
ceb4972a | 123 | debug("scan end\n"); |
93c2582f | 124 | /* if we were not able to find at least one working bus, bail out */ |
d906bbc2 | 125 | if (controllers_initialized == 0) |
93c2582f | 126 | puts("USB error: all controllers failed lowlevel init\n"); |
93c2582f | 127 | |
5a80b344 | 128 | return usb_started ? 0 : -ENODEV; |
affae2bf WD |
129 | } |
130 | ||
131 | /****************************************************************************** | |
132 | * Stop USB this stops the LowLevel Part and deregisters USB devices. | |
133 | */ | |
134 | int usb_stop(void) | |
135 | { | |
93c2582f | 136 | int i; |
eba1f2fc RB |
137 | |
138 | if (usb_started) { | |
139 | asynch_allowed = 1; | |
140 | usb_started = 0; | |
141 | usb_hub_reset(); | |
93c2582f LS |
142 | |
143 | for (i = 0; i < CONFIG_USB_MAX_CONTROLLER_COUNT; i++) { | |
144 | if (usb_lowlevel_stop(i)) | |
145 | printf("failed to stop USB controller %d\n", i); | |
146 | } | |
eba1f2fc | 147 | } |
93c2582f LS |
148 | |
149 | return 0; | |
affae2bf WD |
150 | } |
151 | ||
08f3bb0b VP |
152 | /****************************************************************************** |
153 | * Detect if a USB device has been plugged or unplugged. | |
154 | */ | |
155 | int usb_detect_change(void) | |
156 | { | |
157 | int i, j; | |
158 | int change = 0; | |
159 | ||
160 | for (j = 0; j < USB_MAX_DEVICE; j++) { | |
161 | for (i = 0; i < usb_dev[j].maxchild; i++) { | |
162 | struct usb_port_status status; | |
163 | ||
164 | if (usb_get_port_status(&usb_dev[j], i + 1, | |
165 | &status) < 0) | |
166 | /* USB request failed */ | |
167 | continue; | |
168 | ||
169 | if (le16_to_cpu(status.wPortChange) & | |
170 | USB_PORT_STAT_C_CONNECTION) | |
171 | change++; | |
172 | } | |
173 | } | |
174 | ||
175 | return change; | |
176 | } | |
177 | ||
affae2bf WD |
178 | /* |
179 | * disables the asynch behaviour of the control message. This is used for data | |
180 | * transfers that uses the exclusiv access to the control and bulk messages. | |
89d48367 | 181 | * Returns the old value so it can be restored later. |
affae2bf | 182 | */ |
89d48367 | 183 | int usb_disable_asynch(int disable) |
affae2bf | 184 | { |
89d48367 SG |
185 | int old_value = asynch_allowed; |
186 | ||
6f5794a6 | 187 | asynch_allowed = !disable; |
89d48367 | 188 | return old_value; |
affae2bf | 189 | } |
95fbfe42 | 190 | #endif /* !CONFIG_DM_USB */ |
affae2bf WD |
191 | |
192 | ||
193 | /*------------------------------------------------------------------- | |
194 | * Message wrappers. | |
195 | * | |
196 | */ | |
197 | ||
198 | /* | |
199 | * submits an Interrupt Message | |
200 | */ | |
201 | int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, | |
6f5794a6 | 202 | void *buffer, int transfer_len, int interval) |
affae2bf | 203 | { |
6f5794a6 | 204 | return submit_int_msg(dev, pipe, buffer, transfer_len, interval); |
affae2bf WD |
205 | } |
206 | ||
207 | /* | |
208 | * submits a control message and waits for comletion (at least timeout * 1ms) | |
209 | * If timeout is 0, we don't wait for completion (used as example to set and | |
210 | * clear keyboards LEDs). For data transfers, (storage transfers) we don't | |
211 | * allow control messages with 0 timeout, by previousely resetting the flag | |
212 | * asynch_allowed (usb_disable_asynch(1)). | |
213 | * returns the transfered length if OK or -1 if error. The transfered length | |
214 | * and the current status are stored in the dev->act_len and dev->status. | |
215 | */ | |
216 | int usb_control_msg(struct usb_device *dev, unsigned int pipe, | |
217 | unsigned char request, unsigned char requesttype, | |
218 | unsigned short value, unsigned short index, | |
219 | void *data, unsigned short size, int timeout) | |
220 | { | |
f5766139 | 221 | ALLOC_CACHE_ALIGN_BUFFER(struct devrequest, setup_packet, 1); |
651d95c8 | 222 | int err; |
e159e486 | 223 | |
6f5794a6 RB |
224 | if ((timeout == 0) && (!asynch_allowed)) { |
225 | /* request for a asynch control pipe is not allowed */ | |
5a80b344 | 226 | return -EINVAL; |
6f5794a6 | 227 | } |
9c998aa8 | 228 | |
affae2bf | 229 | /* set setup command */ |
f5766139 PS |
230 | setup_packet->requesttype = requesttype; |
231 | setup_packet->request = request; | |
232 | setup_packet->value = cpu_to_le16(value); | |
233 | setup_packet->index = cpu_to_le16(index); | |
234 | setup_packet->length = cpu_to_le16(size); | |
ceb4972a VG |
235 | debug("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ |
236 | "value 0x%X index 0x%X length 0x%X\n", | |
237 | request, requesttype, value, index, size); | |
6f5794a6 | 238 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ |
affae2bf | 239 | |
651d95c8 HG |
240 | err = submit_control_msg(dev, pipe, data, size, setup_packet); |
241 | if (err < 0) | |
242 | return err; | |
6f5794a6 | 243 | if (timeout == 0) |
affae2bf | 244 | return (int)size; |
6f5794a6 | 245 | |
84d36b30 RB |
246 | /* |
247 | * Wait for status to update until timeout expires, USB driver | |
248 | * interrupt handler may set the status when the USB operation has | |
249 | * been completed. | |
250 | */ | |
251 | while (timeout--) { | |
252 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
253 | break; | |
5b84dd67 | 254 | mdelay(1); |
48867208 | 255 | } |
84d36b30 RB |
256 | if (dev->status) |
257 | return -1; | |
48867208 RB |
258 | |
259 | return dev->act_len; | |
84d36b30 | 260 | |
affae2bf WD |
261 | } |
262 | ||
263 | /*------------------------------------------------------------------- | |
264 | * submits bulk message, and waits for completion. returns 0 if Ok or | |
5a80b344 | 265 | * negative if Error. |
affae2bf WD |
266 | * synchronous behavior |
267 | */ | |
268 | int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, | |
269 | void *data, int len, int *actual_length, int timeout) | |
270 | { | |
271 | if (len < 0) | |
5a80b344 | 272 | return -EINVAL; |
6f5794a6 | 273 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ |
fd06028d | 274 | if (submit_bulk_msg(dev, pipe, data, len) < 0) |
5a80b344 | 275 | return -EIO; |
6f5794a6 RB |
276 | while (timeout--) { |
277 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
affae2bf | 278 | break; |
5b84dd67 | 279 | mdelay(1); |
affae2bf | 280 | } |
6f5794a6 RB |
281 | *actual_length = dev->act_len; |
282 | if (dev->status == 0) | |
affae2bf WD |
283 | return 0; |
284 | else | |
5a80b344 | 285 | return -EIO; |
affae2bf WD |
286 | } |
287 | ||
288 | ||
289 | /*------------------------------------------------------------------- | |
290 | * Max Packet stuff | |
291 | */ | |
292 | ||
293 | /* | |
294 | * returns the max packet size, depending on the pipe direction and | |
295 | * the configurations values | |
296 | */ | |
6f5794a6 | 297 | int usb_maxpacket(struct usb_device *dev, unsigned long pipe) |
affae2bf | 298 | { |
6f5794a6 RB |
299 | /* direction is out -> use emaxpacket out */ |
300 | if ((pipe & USB_DIR_IN) == 0) | |
de39f8c1 | 301 | return dev->epmaxpacketout[((pipe>>15) & 0xf)]; |
affae2bf | 302 | else |
de39f8c1 | 303 | return dev->epmaxpacketin[((pipe>>15) & 0xf)]; |
affae2bf WD |
304 | } |
305 | ||
5e8baf87 MV |
306 | /* |
307 | * The routine usb_set_maxpacket_ep() is extracted from the loop of routine | |
be19d324 RB |
308 | * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine |
309 | * when it is inlined in 1 single routine. What happens is that the register r3 | |
310 | * is used as loop-count 'i', but gets overwritten later on. | |
311 | * This is clearly a compiler bug, but it is easier to workaround it here than | |
312 | * to update the compiler (Occurs with at least several GCC 4.{1,2},x | |
313 | * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM) | |
5e8baf87 MV |
314 | * |
315 | * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5. | |
be19d324 | 316 | */ |
66cf6410 | 317 | static void noinline |
5e8baf87 | 318 | usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx) |
be19d324 RB |
319 | { |
320 | int b; | |
5e8baf87 | 321 | struct usb_endpoint_descriptor *ep; |
b2fb47f1 | 322 | u16 ep_wMaxPacketSize; |
5e8baf87 MV |
323 | |
324 | ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx]; | |
be19d324 RB |
325 | |
326 | b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
b2fb47f1 | 327 | ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize); |
be19d324 RB |
328 | |
329 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == | |
330 | USB_ENDPOINT_XFER_CONTROL) { | |
331 | /* Control => bidirectional */ | |
b2fb47f1 TR |
332 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; |
333 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
ceb4972a VG |
334 | debug("##Control EP epmaxpacketout/in[%d] = %d\n", |
335 | b, dev->epmaxpacketin[b]); | |
be19d324 RB |
336 | } else { |
337 | if ((ep->bEndpointAddress & 0x80) == 0) { | |
338 | /* OUT Endpoint */ | |
b2fb47f1 TR |
339 | if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) { |
340 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; | |
ceb4972a VG |
341 | debug("##EP epmaxpacketout[%d] = %d\n", |
342 | b, dev->epmaxpacketout[b]); | |
be19d324 RB |
343 | } |
344 | } else { | |
345 | /* IN Endpoint */ | |
b2fb47f1 TR |
346 | if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) { |
347 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
ceb4972a VG |
348 | debug("##EP epmaxpacketin[%d] = %d\n", |
349 | b, dev->epmaxpacketin[b]); | |
be19d324 RB |
350 | } |
351 | } /* if out */ | |
352 | } /* if control */ | |
353 | } | |
354 | ||
affae2bf WD |
355 | /* |
356 | * set the max packed value of all endpoints in the given configuration | |
357 | */ | |
c08b1b26 | 358 | static int usb_set_maxpacket(struct usb_device *dev) |
affae2bf | 359 | { |
be19d324 | 360 | int i, ii; |
affae2bf | 361 | |
8f8bd565 TR |
362 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) |
363 | for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++) | |
5e8baf87 | 364 | usb_set_maxpacket_ep(dev, i, ii); |
affae2bf | 365 | |
affae2bf WD |
366 | return 0; |
367 | } | |
368 | ||
369 | /******************************************************************************* | |
370 | * Parse the config, located in buffer, and fills the dev->config structure. | |
371 | * Note that all little/big endian swapping are done automatically. | |
eaf3e613 | 372 | * (wTotalLength has already been swapped and sanitized when it was read.) |
affae2bf | 373 | */ |
c08b1b26 MV |
374 | static int usb_parse_config(struct usb_device *dev, |
375 | unsigned char *buffer, int cfgno) | |
affae2bf WD |
376 | { |
377 | struct usb_descriptor_header *head; | |
7455af41 | 378 | int index, ifno, epno, curr_if_num; |
b2fb47f1 | 379 | u16 ep_wMaxPacketSize; |
605bd75a | 380 | struct usb_interface *if_desc = NULL; |
7455af41 BS |
381 | |
382 | ifno = -1; | |
383 | epno = -1; | |
384 | curr_if_num = -1; | |
385 | ||
386 | dev->configno = cfgno; | |
387 | head = (struct usb_descriptor_header *) &buffer[0]; | |
6f5794a6 RB |
388 | if (head->bDescriptorType != USB_DT_CONFIG) { |
389 | printf(" ERROR: NOT USB_CONFIG_DESC %x\n", | |
390 | head->bDescriptorType); | |
5a80b344 | 391 | return -EINVAL; |
affae2bf | 392 | } |
eaf3e613 JW |
393 | if (head->bLength != USB_DT_CONFIG_SIZE) { |
394 | printf("ERROR: Invalid USB CFG length (%d)\n", head->bLength); | |
5a80b344 | 395 | return -EINVAL; |
eaf3e613 JW |
396 | } |
397 | memcpy(&dev->config, head, USB_DT_CONFIG_SIZE); | |
7455af41 | 398 | dev->config.no_of_if = 0; |
affae2bf | 399 | |
8f8bd565 | 400 | index = dev->config.desc.bLength; |
6f5794a6 RB |
401 | /* Ok the first entry must be a configuration entry, |
402 | * now process the others */ | |
7455af41 | 403 | head = (struct usb_descriptor_header *) &buffer[index]; |
eaf3e613 | 404 | while (index + 1 < dev->config.desc.wTotalLength && head->bLength) { |
6f5794a6 RB |
405 | switch (head->bDescriptorType) { |
406 | case USB_DT_INTERFACE: | |
eaf3e613 JW |
407 | if (head->bLength != USB_DT_INTERFACE_SIZE) { |
408 | printf("ERROR: Invalid USB IF length (%d)\n", | |
409 | head->bLength); | |
410 | break; | |
411 | } | |
412 | if (index + USB_DT_INTERFACE_SIZE > | |
413 | dev->config.desc.wTotalLength) { | |
414 | puts("USB IF descriptor overflowed buffer!\n"); | |
415 | break; | |
416 | } | |
6f5794a6 | 417 | if (((struct usb_interface_descriptor *) \ |
eaf3e613 | 418 | head)->bInterfaceNumber != curr_if_num) { |
6f5794a6 RB |
419 | /* this is a new interface, copy new desc */ |
420 | ifno = dev->config.no_of_if; | |
eaf3e613 JW |
421 | if (ifno >= USB_MAXINTERFACES) { |
422 | puts("Too many USB interfaces!\n"); | |
423 | /* try to go on with what we have */ | |
5a80b344 | 424 | return -EINVAL; |
eaf3e613 | 425 | } |
605bd75a | 426 | if_desc = &dev->config.if_desc[ifno]; |
6f5794a6 | 427 | dev->config.no_of_if++; |
eaf3e613 JW |
428 | memcpy(if_desc, head, |
429 | USB_DT_INTERFACE_SIZE); | |
605bd75a VG |
430 | if_desc->no_of_ep = 0; |
431 | if_desc->num_altsetting = 1; | |
6f5794a6 | 432 | curr_if_num = |
605bd75a | 433 | if_desc->desc.bInterfaceNumber; |
6f5794a6 RB |
434 | } else { |
435 | /* found alternate setting for the interface */ | |
605bd75a VG |
436 | if (ifno >= 0) { |
437 | if_desc = &dev->config.if_desc[ifno]; | |
438 | if_desc->num_altsetting++; | |
439 | } | |
6f5794a6 RB |
440 | } |
441 | break; | |
442 | case USB_DT_ENDPOINT: | |
eaf3e613 JW |
443 | if (head->bLength != USB_DT_ENDPOINT_SIZE) { |
444 | printf("ERROR: Invalid USB EP length (%d)\n", | |
445 | head->bLength); | |
446 | break; | |
447 | } | |
448 | if (index + USB_DT_ENDPOINT_SIZE > | |
449 | dev->config.desc.wTotalLength) { | |
450 | puts("USB EP descriptor overflowed buffer!\n"); | |
451 | break; | |
452 | } | |
453 | if (ifno < 0) { | |
454 | puts("Endpoint descriptor out of order!\n"); | |
455 | break; | |
456 | } | |
6f5794a6 | 457 | epno = dev->config.if_desc[ifno].no_of_ep; |
605bd75a | 458 | if_desc = &dev->config.if_desc[ifno]; |
eaf3e613 JW |
459 | if (epno > USB_MAXENDPOINTS) { |
460 | printf("Interface %d has too many endpoints!\n", | |
461 | if_desc->desc.bInterfaceNumber); | |
5a80b344 | 462 | return -EINVAL; |
eaf3e613 | 463 | } |
6f5794a6 | 464 | /* found an endpoint */ |
605bd75a | 465 | if_desc->no_of_ep++; |
eaf3e613 JW |
466 | memcpy(&if_desc->ep_desc[epno], head, |
467 | USB_DT_ENDPOINT_SIZE); | |
b2fb47f1 TR |
468 | ep_wMaxPacketSize = get_unaligned(&dev->config.\ |
469 | if_desc[ifno].\ | |
470 | ep_desc[epno].\ | |
471 | wMaxPacketSize); | |
472 | put_unaligned(le16_to_cpu(ep_wMaxPacketSize), | |
473 | &dev->config.\ | |
474 | if_desc[ifno].\ | |
475 | ep_desc[epno].\ | |
476 | wMaxPacketSize); | |
ceb4972a | 477 | debug("if %d, ep %d\n", ifno, epno); |
6f5794a6 | 478 | break; |
6497c667 | 479 | case USB_DT_SS_ENDPOINT_COMP: |
eaf3e613 JW |
480 | if (head->bLength != USB_DT_SS_EP_COMP_SIZE) { |
481 | printf("ERROR: Invalid USB EPC length (%d)\n", | |
482 | head->bLength); | |
483 | break; | |
484 | } | |
485 | if (index + USB_DT_SS_EP_COMP_SIZE > | |
486 | dev->config.desc.wTotalLength) { | |
487 | puts("USB EPC descriptor overflowed buffer!\n"); | |
488 | break; | |
489 | } | |
490 | if (ifno < 0 || epno < 0) { | |
491 | puts("EPC descriptor out of order!\n"); | |
492 | break; | |
493 | } | |
6497c667 | 494 | if_desc = &dev->config.if_desc[ifno]; |
eaf3e613 JW |
495 | memcpy(&if_desc->ss_ep_comp_desc[epno], head, |
496 | USB_DT_SS_EP_COMP_SIZE); | |
6497c667 | 497 | break; |
6f5794a6 RB |
498 | default: |
499 | if (head->bLength == 0) | |
5a80b344 | 500 | return -EINVAL; |
6f5794a6 | 501 | |
ceb4972a VG |
502 | debug("unknown Description Type : %x\n", |
503 | head->bDescriptorType); | |
6f5794a6 | 504 | |
ceb4972a | 505 | #ifdef DEBUG |
6f5794a6 | 506 | { |
fad2e1b0 | 507 | unsigned char *ch = (unsigned char *)head; |
ceb4972a VG |
508 | int i; |
509 | ||
6f5794a6 | 510 | for (i = 0; i < head->bLength; i++) |
ceb4972a VG |
511 | debug("%02X ", *ch++); |
512 | debug("\n\n\n"); | |
6f5794a6 | 513 | } |
ceb4972a | 514 | #endif |
6f5794a6 | 515 | break; |
affae2bf | 516 | } |
7455af41 BS |
517 | index += head->bLength; |
518 | head = (struct usb_descriptor_header *)&buffer[index]; | |
affae2bf | 519 | } |
5a80b344 | 520 | return 0; |
affae2bf WD |
521 | } |
522 | ||
523 | /*********************************************************************** | |
524 | * Clears an endpoint | |
525 | * endp: endpoint number in bits 0-3; | |
526 | * direction flag in bit 7 (1 = IN, 0 = OUT) | |
527 | */ | |
528 | int usb_clear_halt(struct usb_device *dev, int pipe) | |
529 | { | |
530 | int result; | |
9c998aa8 | 531 | int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); |
affae2bf WD |
532 | |
533 | result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
534 | USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, |
535 | endp, NULL, 0, USB_CNTL_TIMEOUT * 3); | |
affae2bf WD |
536 | |
537 | /* don't clear if failed */ | |
538 | if (result < 0) | |
539 | return result; | |
9c998aa8 | 540 | |
095b8a37 | 541 | /* |
9c998aa8 WD |
542 | * NOTE: we do not get status and verify reset was successful |
543 | * as some devices are reported to lock up upon this check.. | |
544 | */ | |
545 | ||
affae2bf | 546 | usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); |
9c998aa8 | 547 | |
affae2bf WD |
548 | /* toggle is reset on clear */ |
549 | usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0); | |
550 | return 0; | |
551 | } | |
552 | ||
553 | ||
554 | /********************************************************************** | |
555 | * get_descriptor type | |
556 | */ | |
c08b1b26 | 557 | static int usb_get_descriptor(struct usb_device *dev, unsigned char type, |
6f5794a6 | 558 | unsigned char index, void *buf, int size) |
affae2bf WD |
559 | { |
560 | int res; | |
53677ef1 | 561 | res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
affae2bf WD |
562 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, |
563 | (type << 8) + index, 0, | |
564 | buf, size, USB_CNTL_TIMEOUT); | |
565 | return res; | |
566 | } | |
567 | ||
568 | /********************************************************************** | |
569 | * gets configuration cfgno and store it in the buffer | |
570 | */ | |
6f5794a6 RB |
571 | int usb_get_configuration_no(struct usb_device *dev, |
572 | unsigned char *buffer, int cfgno) | |
affae2bf | 573 | { |
53677ef1 | 574 | int result; |
eaf3e613 | 575 | unsigned int length; |
c60795f4 | 576 | struct usb_config_descriptor *config; |
affae2bf | 577 | |
c60795f4 | 578 | config = (struct usb_config_descriptor *)&buffer[0]; |
48867208 RB |
579 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9); |
580 | if (result < 9) { | |
affae2bf | 581 | if (result < 0) |
6f5794a6 RB |
582 | printf("unable to get descriptor, error %lX\n", |
583 | dev->status); | |
affae2bf | 584 | else |
6f5794a6 | 585 | printf("config descriptor too short " \ |
48867208 | 586 | "(expected %i, got %i)\n", 9, result); |
5a80b344 | 587 | return -EIO; |
affae2bf | 588 | } |
eaf3e613 | 589 | length = le16_to_cpu(config->wTotalLength); |
affae2bf | 590 | |
eaf3e613 JW |
591 | if (length > USB_BUFSIZ) { |
592 | printf("%s: failed to get descriptor - too long: %d\n", | |
593 | __func__, length); | |
5a80b344 | 594 | return -EIO; |
cd0a9de6 WD |
595 | } |
596 | ||
eaf3e613 JW |
597 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, length); |
598 | debug("get_conf_no %d Result %d, wLength %d\n", cfgno, result, length); | |
599 | config->wTotalLength = length; /* validated, with CPU byte order */ | |
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 WD |
609 | { |
610 | int res; | |
611 | ||
ceb4972a | 612 | debug("set address %d\n", dev->devnum); |
6f5794a6 RB |
613 | res = usb_control_msg(dev, usb_snddefctrl(dev), |
614 | USB_REQ_SET_ADDRESS, 0, | |
615 | (dev->devnum), 0, | |
616 | NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
617 | return res; |
618 | } | |
619 | ||
620 | /******************************************************************** | |
621 | * set interface number to interface | |
622 | */ | |
623 | int usb_set_interface(struct usb_device *dev, int interface, int alternate) | |
624 | { | |
8f8bd565 | 625 | struct usb_interface *if_face = NULL; |
affae2bf WD |
626 | int ret, i; |
627 | ||
8f8bd565 TR |
628 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) { |
629 | if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) { | |
affae2bf WD |
630 | if_face = &dev->config.if_desc[i]; |
631 | break; | |
632 | } | |
633 | } | |
634 | if (!if_face) { | |
635 | printf("selecting invalid interface %d", interface); | |
5a80b344 | 636 | return -EINVAL; |
affae2bf | 637 | } |
7455af41 BS |
638 | /* |
639 | * We should return now for devices with only one alternate setting. | |
6f5794a6 RB |
640 | * According to 9.4.10 of the Universal Serial Bus Specification |
641 | * Revision 2.0 such devices can return with a STALL. This results in | |
642 | * some USB sticks timeouting during initialization and then being | |
643 | * unusable in U-Boot. | |
7455af41 BS |
644 | */ |
645 | if (if_face->num_altsetting == 1) | |
646 | return 0; | |
affae2bf | 647 | |
6f5794a6 RB |
648 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
649 | USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, | |
650 | alternate, interface, NULL, 0, | |
651 | USB_CNTL_TIMEOUT * 5); | |
652 | if (ret < 0) | |
affae2bf WD |
653 | return ret; |
654 | ||
affae2bf WD |
655 | return 0; |
656 | } | |
657 | ||
658 | /******************************************************************** | |
659 | * set configuration number to configuration | |
660 | */ | |
c08b1b26 | 661 | static int usb_set_configuration(struct usb_device *dev, int configuration) |
affae2bf WD |
662 | { |
663 | int res; | |
ceb4972a | 664 | debug("set configuration %d\n", configuration); |
affae2bf | 665 | /* set setup command */ |
6f5794a6 RB |
666 | res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
667 | USB_REQ_SET_CONFIGURATION, 0, | |
668 | configuration, 0, | |
669 | NULL, 0, USB_CNTL_TIMEOUT); | |
670 | if (res == 0) { | |
affae2bf WD |
671 | dev->toggle[0] = 0; |
672 | dev->toggle[1] = 0; | |
673 | return 0; | |
6f5794a6 | 674 | } else |
5a80b344 | 675 | return -EIO; |
affae2bf WD |
676 | } |
677 | ||
678 | /******************************************************************** | |
679 | * set protocol to protocol | |
680 | */ | |
681 | int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol) | |
682 | { | |
683 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
684 | USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
685 | protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
686 | } | |
687 | ||
688 | /******************************************************************** | |
689 | * set idle | |
690 | */ | |
691 | int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id) | |
692 | { | |
693 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
694 | USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
695 | (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
696 | } | |
697 | ||
698 | /******************************************************************** | |
699 | * get report | |
700 | */ | |
6f5794a6 RB |
701 | int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, |
702 | unsigned char id, void *buf, int size) | |
affae2bf WD |
703 | { |
704 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
6f5794a6 RB |
705 | USB_REQ_GET_REPORT, |
706 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
707 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
affae2bf WD |
708 | } |
709 | ||
710 | /******************************************************************** | |
711 | * get class descriptor | |
712 | */ | |
713 | int usb_get_class_descriptor(struct usb_device *dev, int ifnum, | |
714 | unsigned char type, unsigned char id, void *buf, int size) | |
715 | { | |
716 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
717 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
718 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
719 | } | |
720 | ||
721 | /******************************************************************** | |
722 | * get string index in buffer | |
723 | */ | |
c08b1b26 | 724 | static int usb_get_string(struct usb_device *dev, unsigned short langid, |
6f5794a6 | 725 | unsigned char index, void *buf, int size) |
affae2bf | 726 | { |
9c998aa8 WD |
727 | int i; |
728 | int result; | |
729 | ||
730 | for (i = 0; i < 3; ++i) { | |
731 | /* some devices are flaky */ | |
732 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
733 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, | |
095b8a37 | 734 | (USB_DT_STRING << 8) + index, langid, buf, size, |
9c998aa8 WD |
735 | USB_CNTL_TIMEOUT); |
736 | ||
737 | if (result > 0) | |
738 | break; | |
095b8a37 WD |
739 | } |
740 | ||
9c998aa8 WD |
741 | return result; |
742 | } | |
743 | ||
744 | ||
745 | static void usb_try_string_workarounds(unsigned char *buf, int *length) | |
746 | { | |
747 | int newlength, oldlength = *length; | |
748 | ||
749 | for (newlength = 2; newlength + 1 < oldlength; newlength += 2) | |
750 | if (!isprint(buf[newlength]) || buf[newlength + 1]) | |
751 | break; | |
752 | ||
753 | if (newlength > 2) { | |
754 | buf[0] = newlength; | |
755 | *length = newlength; | |
756 | } | |
affae2bf WD |
757 | } |
758 | ||
9c998aa8 WD |
759 | |
760 | static int usb_string_sub(struct usb_device *dev, unsigned int langid, | |
761 | unsigned int index, unsigned char *buf) | |
762 | { | |
763 | int rc; | |
764 | ||
765 | /* Try to read the string descriptor by asking for the maximum | |
766 | * possible number of bytes */ | |
767 | rc = usb_get_string(dev, langid, index, buf, 255); | |
768 | ||
769 | /* If that failed try to read the descriptor length, then | |
770 | * ask for just that many bytes */ | |
771 | if (rc < 2) { | |
772 | rc = usb_get_string(dev, langid, index, buf, 2); | |
773 | if (rc == 2) | |
774 | rc = usb_get_string(dev, langid, index, buf, buf[0]); | |
775 | } | |
776 | ||
777 | if (rc >= 2) { | |
778 | if (!buf[0] && !buf[1]) | |
779 | usb_try_string_workarounds(buf, &rc); | |
780 | ||
781 | /* There might be extra junk at the end of the descriptor */ | |
782 | if (buf[0] < rc) | |
783 | rc = buf[0]; | |
784 | ||
785 | rc = rc - (rc & 1); /* force a multiple of two */ | |
786 | } | |
787 | ||
788 | if (rc < 2) | |
5a80b344 | 789 | rc = -EINVAL; |
9c998aa8 WD |
790 | |
791 | return rc; | |
792 | } | |
793 | ||
794 | ||
affae2bf WD |
795 | /******************************************************************** |
796 | * usb_string: | |
797 | * Get string index and translate it to ascii. | |
798 | * returns string length (> 0) or error (< 0) | |
799 | */ | |
800 | int usb_string(struct usb_device *dev, int index, char *buf, size_t size) | |
801 | { | |
f5766139 | 802 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, mybuf, USB_BUFSIZ); |
affae2bf WD |
803 | unsigned char *tbuf; |
804 | int err; | |
805 | unsigned int u, idx; | |
806 | ||
807 | if (size <= 0 || !buf || !index) | |
5a80b344 | 808 | return -EINVAL; |
affae2bf | 809 | buf[0] = 0; |
d0ff51ba | 810 | tbuf = &mybuf[0]; |
affae2bf WD |
811 | |
812 | /* get langid for strings if it's not yet known */ | |
813 | if (!dev->have_langid) { | |
9c998aa8 | 814 | err = usb_string_sub(dev, 0, 0, tbuf); |
affae2bf | 815 | if (err < 0) { |
ceb4972a VG |
816 | debug("error getting string descriptor 0 " \ |
817 | "(error=%lx)\n", dev->status); | |
5a80b344 | 818 | return -EIO; |
affae2bf | 819 | } else if (tbuf[0] < 4) { |
ceb4972a | 820 | debug("string descriptor 0 too short\n"); |
5a80b344 | 821 | return -EIO; |
affae2bf WD |
822 | } else { |
823 | dev->have_langid = -1; | |
6f5794a6 | 824 | dev->string_langid = tbuf[2] | (tbuf[3] << 8); |
affae2bf | 825 | /* always use the first langid listed */ |
ceb4972a VG |
826 | debug("USB device number %d default " \ |
827 | "language ID 0x%x\n", | |
828 | dev->devnum, dev->string_langid); | |
affae2bf WD |
829 | } |
830 | } | |
cd0a9de6 | 831 | |
9c998aa8 | 832 | err = usb_string_sub(dev, dev->string_langid, index, tbuf); |
affae2bf WD |
833 | if (err < 0) |
834 | return err; | |
9c998aa8 | 835 | |
affae2bf WD |
836 | size--; /* leave room for trailing NULL char in output buffer */ |
837 | for (idx = 0, u = 2; u < err; u += 2) { | |
838 | if (idx >= size) | |
839 | break; | |
840 | if (tbuf[u+1]) /* high byte */ | |
841 | buf[idx++] = '?'; /* non-ASCII character */ | |
842 | else | |
843 | buf[idx++] = tbuf[u]; | |
844 | } | |
845 | buf[idx] = 0; | |
846 | err = idx; | |
847 | return err; | |
848 | } | |
849 | ||
850 | ||
851 | /******************************************************************** | |
852 | * USB device handling: | |
853 | * the USB device are static allocated [USB_MAX_DEVICE]. | |
854 | */ | |
855 | ||
95fbfe42 | 856 | #ifndef CONFIG_DM_USB |
affae2bf WD |
857 | |
858 | /* returns a pointer to the device with the index [index]. | |
859 | * if the device is not assigned (dev->devnum==-1) returns NULL | |
860 | */ | |
6f5794a6 | 861 | struct usb_device *usb_get_dev_index(int index) |
affae2bf | 862 | { |
6f5794a6 | 863 | if (usb_dev[index].devnum == -1) |
affae2bf WD |
864 | return NULL; |
865 | else | |
866 | return &usb_dev[index]; | |
867 | } | |
868 | ||
79b58887 | 869 | int usb_alloc_new_device(struct udevice *controller, struct usb_device **devp) |
affae2bf WD |
870 | { |
871 | int i; | |
ceb4972a | 872 | debug("New Device %d\n", dev_index); |
6f5794a6 RB |
873 | if (dev_index == USB_MAX_DEVICE) { |
874 | printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); | |
79b58887 | 875 | return -ENOSPC; |
affae2bf | 876 | } |
6f5794a6 RB |
877 | /* default Address is 0, real addresses start with 1 */ |
878 | usb_dev[dev_index].devnum = dev_index + 1; | |
879 | usb_dev[dev_index].maxchild = 0; | |
880 | for (i = 0; i < USB_MAXCHILDREN; i++) | |
881 | usb_dev[dev_index].children[i] = NULL; | |
882 | usb_dev[dev_index].parent = NULL; | |
c7e3b2b5 | 883 | usb_dev[dev_index].controller = controller; |
affae2bf | 884 | dev_index++; |
79b58887 SG |
885 | *devp = &usb_dev[dev_index - 1]; |
886 | ||
887 | return 0; | |
affae2bf WD |
888 | } |
889 | ||
359439d2 MC |
890 | /* |
891 | * Free the newly created device node. | |
892 | * Called in error cases where configuring a newly attached | |
893 | * device fails for some reason. | |
894 | */ | |
79b58887 | 895 | void usb_free_device(struct udevice *controller) |
359439d2 MC |
896 | { |
897 | dev_index--; | |
ceb4972a | 898 | debug("Freeing device node: %d\n", dev_index); |
359439d2 MC |
899 | memset(&usb_dev[dev_index], 0, sizeof(struct usb_device)); |
900 | usb_dev[dev_index].devnum = -1; | |
901 | } | |
affae2bf | 902 | |
5853e133 VG |
903 | /* |
904 | * XHCI issues Enable Slot command and thereafter | |
905 | * allocates device contexts. Provide a weak alias | |
906 | * function for the purpose, so that XHCI overrides it | |
907 | * and EHCI/OHCI just work out of the box. | |
908 | */ | |
909 | __weak int usb_alloc_device(struct usb_device *udev) | |
910 | { | |
911 | return 0; | |
912 | } | |
95fbfe42 | 913 | #endif /* !CONFIG_DM_USB */ |
862e75c0 | 914 | |
682c9f8d | 915 | static int usb_hub_port_reset(struct usb_device *dev, struct usb_device *hub) |
862e75c0 SG |
916 | { |
917 | if (hub) { | |
918 | unsigned short portstatus; | |
919 | int err; | |
920 | ||
921 | /* reset the port for the second time */ | |
682c9f8d | 922 | err = legacy_hub_port_reset(hub, dev->portnr - 1, &portstatus); |
862e75c0 | 923 | if (err < 0) { |
682c9f8d | 924 | printf("\n Couldn't reset port %i\n", dev->portnr); |
862e75c0 SG |
925 | return err; |
926 | } | |
927 | } else { | |
8802f563 | 928 | usb_reset_root_port(dev); |
862e75c0 SG |
929 | } |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
0ed27905 | 934 | static int get_descriptor_len(struct usb_device *dev, int len, int expect_len) |
affae2bf | 935 | { |
128fcac0 | 936 | __maybe_unused struct usb_device_descriptor *desc; |
f5766139 | 937 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); |
0ed27905 SG |
938 | int err; |
939 | ||
940 | desc = (struct usb_device_descriptor *)tmpbuf; | |
941 | ||
942 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, len); | |
943 | if (err < expect_len) { | |
944 | if (err < 0) { | |
945 | printf("unable to get device descriptor (error=%d)\n", | |
946 | err); | |
947 | return err; | |
948 | } else { | |
949 | printf("USB device descriptor short read (expected %i, got %i)\n", | |
950 | expect_len, err); | |
951 | return -EIO; | |
952 | } | |
953 | } | |
954 | memcpy(&dev->descriptor, tmpbuf, sizeof(dev->descriptor)); | |
955 | ||
956 | return 0; | |
957 | } | |
958 | ||
959 | static int usb_setup_descriptor(struct usb_device *dev, bool do_read) | |
960 | { | |
53d8aa0f SG |
961 | /* |
962 | * This is a Windows scheme of initialization sequence, with double | |
48867208 | 963 | * reset of the device (Linux uses the same sequence) |
c9e8436b RB |
964 | * Some equipment is said to work only with such init sequence; this |
965 | * patch is based on the work by Alan Stern: | |
de39f8c1 MT |
966 | * http://sourceforge.net/mailarchive/forum.php? |
967 | * thread_id=5729457&forum_id=5398 | |
9c998aa8 | 968 | */ |
9c998aa8 | 969 | |
53d8aa0f SG |
970 | /* |
971 | * send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is | |
9c998aa8 WD |
972 | * only 18 bytes long, this will terminate with a short packet. But if |
973 | * the maxpacket size is 8 or 16 the device may be waiting to transmit | |
2b338ef4 HG |
974 | * some more, or keeps on retransmitting the 8 byte header. |
975 | */ | |
9c998aa8 | 976 | |
2b338ef4 HG |
977 | if (dev->speed == USB_SPEED_LOW) { |
978 | dev->descriptor.bMaxPacketSize0 = 8; | |
979 | dev->maxpacketsize = PACKET_SIZE_8; | |
980 | } else { | |
981 | dev->descriptor.bMaxPacketSize0 = 64; | |
982 | dev->maxpacketsize = PACKET_SIZE_64; | |
983 | } | |
984 | dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; | |
985 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; | |
48867208 | 986 | |
128fcac0 SG |
987 | if (do_read) { |
988 | int err; | |
862e75c0 | 989 | |
128fcac0 SG |
990 | /* |
991 | * Validate we've received only at least 8 bytes, not that we've | |
992 | * received the entire descriptor. The reasoning is: | |
993 | * - The code only uses fields in the first 8 bytes, so that's all we | |
994 | * need to have fetched at this stage. | |
995 | * - The smallest maxpacket size is 8 bytes. Before we know the actual | |
996 | * maxpacket the device uses, the USB controller may only accept a | |
997 | * single packet. Consequently we are only guaranteed to receive 1 | |
998 | * packet (at least 8 bytes) even in a non-error case. | |
999 | * | |
1000 | * At least the DWC2 controller needs to be programmed with the number | |
1001 | * of packets in addition to the number of bytes. A request for 64 | |
1002 | * bytes of data with the maxpacket guessed as 64 (above) yields a | |
1003 | * request for 1 packet. | |
1004 | */ | |
0ed27905 SG |
1005 | err = get_descriptor_len(dev, 64, 8); |
1006 | if (err) | |
1007 | return err; | |
9c998aa8 | 1008 | } |
48867208 | 1009 | |
de39f8c1 | 1010 | dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; |
affae2bf WD |
1011 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; |
1012 | switch (dev->descriptor.bMaxPacketSize0) { | |
de39f8c1 MT |
1013 | case 8: |
1014 | dev->maxpacketsize = PACKET_SIZE_8; | |
1015 | break; | |
1016 | case 16: | |
1017 | dev->maxpacketsize = PACKET_SIZE_16; | |
1018 | break; | |
1019 | case 32: | |
1020 | dev->maxpacketsize = PACKET_SIZE_32; | |
1021 | break; | |
1022 | case 64: | |
1023 | dev->maxpacketsize = PACKET_SIZE_64; | |
1024 | break; | |
04ee6ee2 PK |
1025 | default: |
1026 | printf("usb_new_device: invalid max packet size\n"); | |
1027 | return -EIO; | |
affae2bf | 1028 | } |
128fcac0 SG |
1029 | |
1030 | return 0; | |
1031 | } | |
1032 | ||
91398f98 | 1033 | static int usb_prepare_device(struct usb_device *dev, int addr, bool do_read, |
9eb72dd1 | 1034 | struct usb_device *parent) |
128fcac0 | 1035 | { |
91398f98 | 1036 | int err; |
128fcac0 SG |
1037 | |
1038 | /* | |
1039 | * Allocate usb 3.0 device context. | |
1040 | * USB 3.0 (xHCI) protocol tries to allocate device slot | |
1041 | * and related data structures first. This call does that. | |
1042 | * Refer to sec 4.3.2 in xHCI spec rev1.0 | |
1043 | */ | |
91398f98 SG |
1044 | err = usb_alloc_device(dev); |
1045 | if (err) { | |
128fcac0 | 1046 | printf("Cannot allocate device context to get SLOT_ID\n"); |
91398f98 | 1047 | return err; |
128fcac0 | 1048 | } |
128fcac0 SG |
1049 | err = usb_setup_descriptor(dev, do_read); |
1050 | if (err) | |
1051 | return err; | |
682c9f8d | 1052 | err = usb_hub_port_reset(dev, parent); |
128fcac0 SG |
1053 | if (err) |
1054 | return err; | |
1055 | ||
affae2bf WD |
1056 | dev->devnum = addr; |
1057 | ||
1058 | err = usb_set_address(dev); /* set address */ | |
1059 | ||
1060 | if (err < 0) { | |
6f5794a6 RB |
1061 | printf("\n USB device not accepting new address " \ |
1062 | "(error=%lX)\n", dev->status); | |
91398f98 | 1063 | return err; |
affae2bf WD |
1064 | } |
1065 | ||
5b84dd67 | 1066 | mdelay(10); /* Let the SET_ADDRESS settle */ |
affae2bf | 1067 | |
91398f98 SG |
1068 | return 0; |
1069 | } | |
1070 | ||
95fbfe42 | 1071 | int usb_select_config(struct usb_device *dev) |
91398f98 | 1072 | { |
91398f98 | 1073 | ALLOC_CACHE_ALIGN_BUFFER(unsigned char, tmpbuf, USB_BUFSIZ); |
0ed27905 | 1074 | int err; |
91398f98 | 1075 | |
0ed27905 SG |
1076 | err = get_descriptor_len(dev, USB_DT_DEVICE_SIZE, USB_DT_DEVICE_SIZE); |
1077 | if (err) | |
1078 | return err; | |
affae2bf | 1079 | |
affae2bf | 1080 | /* correct le values */ |
c918261c CE |
1081 | le16_to_cpus(&dev->descriptor.bcdUSB); |
1082 | le16_to_cpus(&dev->descriptor.idVendor); | |
1083 | le16_to_cpus(&dev->descriptor.idProduct); | |
1084 | le16_to_cpus(&dev->descriptor.bcdDevice); | |
0ed27905 | 1085 | |
affae2bf | 1086 | /* only support for one config for now */ |
8b8d779d VP |
1087 | err = usb_get_configuration_no(dev, tmpbuf, 0); |
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); | |
0ed27905 | 1092 | return err; |
8b8d779d | 1093 | } |
f5766139 | 1094 | usb_parse_config(dev, tmpbuf, 0); |
affae2bf | 1095 | usb_set_maxpacket(dev); |
0ed27905 SG |
1096 | /* |
1097 | * we set the default configuration here | |
1098 | * This seems premature. If the driver wants a different configuration | |
1099 | * it will need to select itself. | |
1100 | */ | |
1101 | err = usb_set_configuration(dev, dev->config.desc.bConfigurationValue); | |
1102 | if (err < 0) { | |
6f5794a6 RB |
1103 | printf("failed to set default configuration " \ |
1104 | "len %d, status %lX\n", dev->act_len, dev->status); | |
0ed27905 | 1105 | return err; |
affae2bf | 1106 | } |
ceb4972a VG |
1107 | debug("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", |
1108 | dev->descriptor.iManufacturer, dev->descriptor.iProduct, | |
1109 | dev->descriptor.iSerialNumber); | |
affae2bf WD |
1110 | memset(dev->mf, 0, sizeof(dev->mf)); |
1111 | memset(dev->prod, 0, sizeof(dev->prod)); | |
1112 | memset(dev->serial, 0, sizeof(dev->serial)); | |
1113 | if (dev->descriptor.iManufacturer) | |
6f5794a6 RB |
1114 | usb_string(dev, dev->descriptor.iManufacturer, |
1115 | dev->mf, sizeof(dev->mf)); | |
affae2bf | 1116 | if (dev->descriptor.iProduct) |
6f5794a6 RB |
1117 | usb_string(dev, dev->descriptor.iProduct, |
1118 | dev->prod, sizeof(dev->prod)); | |
affae2bf | 1119 | if (dev->descriptor.iSerialNumber) |
6f5794a6 RB |
1120 | usb_string(dev, dev->descriptor.iSerialNumber, |
1121 | dev->serial, sizeof(dev->serial)); | |
ceb4972a VG |
1122 | debug("Manufacturer %s\n", dev->mf); |
1123 | debug("Product %s\n", dev->prod); | |
1124 | debug("SerialNumber %s\n", dev->serial); | |
0ed27905 SG |
1125 | |
1126 | return 0; | |
1127 | } | |
1128 | ||
95fbfe42 | 1129 | int usb_setup_device(struct usb_device *dev, bool do_read, |
9eb72dd1 | 1130 | struct usb_device *parent) |
0ed27905 SG |
1131 | { |
1132 | int addr; | |
1133 | int ret; | |
1134 | ||
1135 | /* We still haven't set the Address yet */ | |
1136 | addr = dev->devnum; | |
1137 | dev->devnum = 0; | |
1138 | ||
9eb72dd1 | 1139 | ret = usb_prepare_device(dev, addr, do_read, parent); |
0ed27905 SG |
1140 | if (ret) |
1141 | return ret; | |
1142 | ret = usb_select_config(dev); | |
1143 | ||
1144 | return ret; | |
1145 | } | |
1146 | ||
95fbfe42 | 1147 | #ifndef CONFIG_DM_USB |
0ed27905 SG |
1148 | /* |
1149 | * By the time we get here, the device has gotten a new device ID | |
1150 | * and is in the default state. We need to identify the thing and | |
1151 | * get the ball rolling.. | |
1152 | * | |
1153 | * Returns 0 for success, != 0 for error. | |
1154 | */ | |
1155 | int usb_new_device(struct usb_device *dev) | |
1156 | { | |
1157 | bool do_read = true; | |
1158 | int err; | |
1159 | ||
1160 | /* | |
1161 | * XHCI needs to issue a Address device command to setup | |
1162 | * proper device context structures, before it can interact | |
1163 | * with the device. So a get_descriptor will fail before any | |
1164 | * of that is done for XHCI unlike EHCI. | |
1165 | */ | |
1166 | #ifdef CONFIG_USB_XHCI | |
1167 | do_read = false; | |
1168 | #endif | |
9eb72dd1 | 1169 | err = usb_setup_device(dev, do_read, dev->parent); |
0ed27905 SG |
1170 | if (err) |
1171 | return err; | |
1172 | ||
1173 | /* Now probe if the device is a hub */ | |
1174 | err = usb_hub_probe(dev, 0); | |
1175 | if (err < 0) | |
1176 | return err; | |
1177 | ||
affae2bf WD |
1178 | return 0; |
1179 | } | |
95fbfe42 | 1180 | #endif |
affae2bf | 1181 | |
16297cfb | 1182 | __weak |
bba67914 | 1183 | int board_usb_init(int index, enum usb_init_type init) |
16297cfb MZ |
1184 | { |
1185 | return 0; | |
1186 | } | |
db378d78 KVA |
1187 | |
1188 | __weak | |
1189 | int board_usb_cleanup(int index, enum usb_init_type init) | |
1190 | { | |
1191 | return 0; | |
1192 | } | |
95fbfe42 SG |
1193 | |
1194 | bool usb_device_has_child_on_port(struct usb_device *parent, int port) | |
1195 | { | |
1196 | #ifdef CONFIG_DM_USB | |
1197 | return false; | |
1198 | #else | |
1199 | return parent->children[port] != NULL; | |
1200 | #endif | |
1201 | } | |
1202 | ||
affae2bf | 1203 | /* EOF */ |