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Commit | Line | Data |
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affae2bf | 1 | /* |
affae2bf WD |
2 | * |
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 | * See file CREDITS for list of people who contributed to this | |
19 | * project. | |
20 | * | |
21 | * This program is free software; you can redistribute it and/or | |
22 | * modify it under the terms of the GNU General Public License as | |
23 | * published by the Free Software Foundation; either version 2 of | |
24 | * the License, or (at your option) any later version. | |
25 | * | |
26 | * This program is distributed in the hope that it will be useful, | |
27 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
28 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
29 | * GNU General Public License for more details. | |
30 | * | |
31 | * You should have received a copy of the GNU General Public License | |
32 | * along with this program; if not, write to the Free Software | |
33 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
34 | * MA 02111-1307 USA | |
35 | * | |
36 | */ | |
37 | ||
affae2bf WD |
38 | /* |
39 | * How it works: | |
40 | * | |
41 | * Since this is a bootloader, the devices will not be automatic | |
42 | * (re)configured on hotplug, but after a restart of the USB the | |
43 | * device should work. | |
44 | * | |
45 | * For each transfer (except "Interrupt") we wait for completion. | |
46 | */ | |
47 | #include <common.h> | |
48 | #include <command.h> | |
49 | #include <asm/processor.h> | |
9c998aa8 | 50 | #include <linux/ctype.h> |
c918261c | 51 | #include <asm/byteorder.h> |
b2fb47f1 | 52 | #include <asm/unaligned.h> |
affae2bf | 53 | |
affae2bf WD |
54 | #include <usb.h> |
55 | #ifdef CONFIG_4xx | |
3048bcbf | 56 | #include <asm/4xx_pci.h> |
affae2bf WD |
57 | #endif |
58 | ||
ce297a8f | 59 | #ifdef DEBUG |
88ec8c12 MV |
60 | #define USB_DEBUG 1 |
61 | #define USB_HUB_DEBUG 1 | |
affae2bf | 62 | #else |
88ec8c12 MV |
63 | #define USB_DEBUG 0 |
64 | #define USB_HUB_DEBUG 0 | |
affae2bf WD |
65 | #endif |
66 | ||
88ec8c12 MV |
67 | #define USB_PRINTF(fmt, args...) debug_cond(USB_DEBUG, fmt, ##args) |
68 | #define USB_HUB_PRINTF(fmt, args...) debug_cond(USB_HUB_DEBUG, fmt, ##args) | |
69 | ||
cd0a9de6 WD |
70 | #define USB_BUFSIZ 512 |
71 | ||
affae2bf WD |
72 | static struct usb_device usb_dev[USB_MAX_DEVICE]; |
73 | static int dev_index; | |
74 | static int running; | |
75 | static int asynch_allowed; | |
affae2bf | 76 | |
e51aae38 BS |
77 | char usb_started; /* flag for the started/stopped USB status */ |
78 | ||
affae2bf WD |
79 | /********************************************************************** |
80 | * some forward declerations... | |
81 | */ | |
c08b1b26 | 82 | static void usb_scan_devices(void); |
affae2bf | 83 | |
affae2bf WD |
84 | /*************************************************************************** |
85 | * Init USB Device | |
86 | */ | |
87 | ||
88 | int usb_init(void) | |
89 | { | |
90 | int result; | |
91 | ||
6f5794a6 RB |
92 | running = 0; |
93 | dev_index = 0; | |
94 | asynch_allowed = 1; | |
affae2bf WD |
95 | usb_hub_reset(); |
96 | /* init low_level USB */ | |
97 | printf("USB: "); | |
98 | result = usb_lowlevel_init(); | |
6f5794a6 RB |
99 | /* if lowlevel init is OK, scan the bus for devices |
100 | * i.e. search HUBs and configure them */ | |
101 | if (result == 0) { | |
affae2bf | 102 | printf("scanning bus for devices... "); |
6f5794a6 | 103 | running = 1; |
affae2bf | 104 | usb_scan_devices(); |
e51aae38 | 105 | usb_started = 1; |
affae2bf | 106 | return 0; |
6f5794a6 | 107 | } else { |
affae2bf | 108 | printf("Error, couldn't init Lowlevel part\n"); |
e51aae38 | 109 | usb_started = 0; |
affae2bf WD |
110 | return -1; |
111 | } | |
112 | } | |
113 | ||
114 | /****************************************************************************** | |
115 | * Stop USB this stops the LowLevel Part and deregisters USB devices. | |
116 | */ | |
117 | int usb_stop(void) | |
118 | { | |
eba1f2fc RB |
119 | int res = 0; |
120 | ||
121 | if (usb_started) { | |
122 | asynch_allowed = 1; | |
123 | usb_started = 0; | |
124 | usb_hub_reset(); | |
125 | res = usb_lowlevel_stop(); | |
126 | } | |
127 | return res; | |
affae2bf WD |
128 | } |
129 | ||
130 | /* | |
131 | * disables the asynch behaviour of the control message. This is used for data | |
132 | * transfers that uses the exclusiv access to the control and bulk messages. | |
89d48367 | 133 | * Returns the old value so it can be restored later. |
affae2bf | 134 | */ |
89d48367 | 135 | int usb_disable_asynch(int disable) |
affae2bf | 136 | { |
89d48367 SG |
137 | int old_value = asynch_allowed; |
138 | ||
6f5794a6 | 139 | asynch_allowed = !disable; |
89d48367 | 140 | return old_value; |
affae2bf WD |
141 | } |
142 | ||
143 | ||
144 | /*------------------------------------------------------------------- | |
145 | * Message wrappers. | |
146 | * | |
147 | */ | |
148 | ||
149 | /* | |
150 | * submits an Interrupt Message | |
151 | */ | |
152 | int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, | |
6f5794a6 | 153 | void *buffer, int transfer_len, int interval) |
affae2bf | 154 | { |
6f5794a6 | 155 | return submit_int_msg(dev, pipe, buffer, transfer_len, interval); |
affae2bf WD |
156 | } |
157 | ||
158 | /* | |
159 | * submits a control message and waits for comletion (at least timeout * 1ms) | |
160 | * If timeout is 0, we don't wait for completion (used as example to set and | |
161 | * clear keyboards LEDs). For data transfers, (storage transfers) we don't | |
162 | * allow control messages with 0 timeout, by previousely resetting the flag | |
163 | * asynch_allowed (usb_disable_asynch(1)). | |
164 | * returns the transfered length if OK or -1 if error. The transfered length | |
165 | * and the current status are stored in the dev->act_len and dev->status. | |
166 | */ | |
167 | int usb_control_msg(struct usb_device *dev, unsigned int pipe, | |
168 | unsigned char request, unsigned char requesttype, | |
169 | unsigned short value, unsigned short index, | |
170 | void *data, unsigned short size, int timeout) | |
171 | { | |
e159e486 MV |
172 | struct devrequest setup_packet; |
173 | ||
6f5794a6 RB |
174 | if ((timeout == 0) && (!asynch_allowed)) { |
175 | /* request for a asynch control pipe is not allowed */ | |
affae2bf | 176 | return -1; |
6f5794a6 | 177 | } |
9c998aa8 | 178 | |
affae2bf WD |
179 | /* set setup command */ |
180 | setup_packet.requesttype = requesttype; | |
181 | setup_packet.request = request; | |
c918261c CE |
182 | setup_packet.value = cpu_to_le16(value); |
183 | setup_packet.index = cpu_to_le16(index); | |
184 | setup_packet.length = cpu_to_le16(size); | |
6f5794a6 RB |
185 | USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ |
186 | "value 0x%X index 0x%X length 0x%X\n", | |
187 | request, requesttype, value, index, size); | |
188 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ | |
affae2bf | 189 | |
6f5794a6 RB |
190 | submit_control_msg(dev, pipe, data, size, &setup_packet); |
191 | if (timeout == 0) | |
affae2bf | 192 | return (int)size; |
6f5794a6 | 193 | |
84d36b30 RB |
194 | /* |
195 | * Wait for status to update until timeout expires, USB driver | |
196 | * interrupt handler may set the status when the USB operation has | |
197 | * been completed. | |
198 | */ | |
199 | while (timeout--) { | |
200 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
201 | break; | |
5b84dd67 | 202 | mdelay(1); |
48867208 | 203 | } |
84d36b30 RB |
204 | if (dev->status) |
205 | return -1; | |
48867208 RB |
206 | |
207 | return dev->act_len; | |
84d36b30 | 208 | |
affae2bf WD |
209 | } |
210 | ||
211 | /*------------------------------------------------------------------- | |
212 | * submits bulk message, and waits for completion. returns 0 if Ok or | |
213 | * -1 if Error. | |
214 | * synchronous behavior | |
215 | */ | |
216 | int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, | |
217 | void *data, int len, int *actual_length, int timeout) | |
218 | { | |
219 | if (len < 0) | |
220 | return -1; | |
6f5794a6 RB |
221 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ |
222 | submit_bulk_msg(dev, pipe, data, len); | |
223 | while (timeout--) { | |
224 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
affae2bf | 225 | break; |
5b84dd67 | 226 | mdelay(1); |
affae2bf | 227 | } |
6f5794a6 RB |
228 | *actual_length = dev->act_len; |
229 | if (dev->status == 0) | |
affae2bf WD |
230 | return 0; |
231 | else | |
232 | return -1; | |
233 | } | |
234 | ||
235 | ||
236 | /*------------------------------------------------------------------- | |
237 | * Max Packet stuff | |
238 | */ | |
239 | ||
240 | /* | |
241 | * returns the max packet size, depending on the pipe direction and | |
242 | * the configurations values | |
243 | */ | |
6f5794a6 | 244 | int usb_maxpacket(struct usb_device *dev, unsigned long pipe) |
affae2bf | 245 | { |
6f5794a6 RB |
246 | /* direction is out -> use emaxpacket out */ |
247 | if ((pipe & USB_DIR_IN) == 0) | |
de39f8c1 | 248 | return dev->epmaxpacketout[((pipe>>15) & 0xf)]; |
affae2bf | 249 | else |
de39f8c1 | 250 | return dev->epmaxpacketin[((pipe>>15) & 0xf)]; |
affae2bf WD |
251 | } |
252 | ||
5e8baf87 MV |
253 | /* |
254 | * The routine usb_set_maxpacket_ep() is extracted from the loop of routine | |
be19d324 RB |
255 | * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine |
256 | * when it is inlined in 1 single routine. What happens is that the register r3 | |
257 | * is used as loop-count 'i', but gets overwritten later on. | |
258 | * This is clearly a compiler bug, but it is easier to workaround it here than | |
259 | * to update the compiler (Occurs with at least several GCC 4.{1,2},x | |
260 | * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM) | |
5e8baf87 MV |
261 | * |
262 | * NOTE: Similar behaviour was observed with GCC4.6 on ARMv5. | |
be19d324 RB |
263 | */ |
264 | static void __attribute__((noinline)) | |
5e8baf87 | 265 | usb_set_maxpacket_ep(struct usb_device *dev, int if_idx, int ep_idx) |
be19d324 RB |
266 | { |
267 | int b; | |
5e8baf87 | 268 | struct usb_endpoint_descriptor *ep; |
b2fb47f1 | 269 | u16 ep_wMaxPacketSize; |
5e8baf87 MV |
270 | |
271 | ep = &dev->config.if_desc[if_idx].ep_desc[ep_idx]; | |
be19d324 RB |
272 | |
273 | b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
b2fb47f1 | 274 | ep_wMaxPacketSize = get_unaligned(&ep->wMaxPacketSize); |
be19d324 RB |
275 | |
276 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == | |
277 | USB_ENDPOINT_XFER_CONTROL) { | |
278 | /* Control => bidirectional */ | |
b2fb47f1 TR |
279 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; |
280 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
be19d324 RB |
281 | USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n", |
282 | b, dev->epmaxpacketin[b]); | |
283 | } else { | |
284 | if ((ep->bEndpointAddress & 0x80) == 0) { | |
285 | /* OUT Endpoint */ | |
b2fb47f1 TR |
286 | if (ep_wMaxPacketSize > dev->epmaxpacketout[b]) { |
287 | dev->epmaxpacketout[b] = ep_wMaxPacketSize; | |
be19d324 RB |
288 | USB_PRINTF("##EP epmaxpacketout[%d] = %d\n", |
289 | b, dev->epmaxpacketout[b]); | |
290 | } | |
291 | } else { | |
292 | /* IN Endpoint */ | |
b2fb47f1 TR |
293 | if (ep_wMaxPacketSize > dev->epmaxpacketin[b]) { |
294 | dev->epmaxpacketin[b] = ep_wMaxPacketSize; | |
be19d324 RB |
295 | USB_PRINTF("##EP epmaxpacketin[%d] = %d\n", |
296 | b, dev->epmaxpacketin[b]); | |
297 | } | |
298 | } /* if out */ | |
299 | } /* if control */ | |
300 | } | |
301 | ||
affae2bf WD |
302 | /* |
303 | * set the max packed value of all endpoints in the given configuration | |
304 | */ | |
c08b1b26 | 305 | static int usb_set_maxpacket(struct usb_device *dev) |
affae2bf | 306 | { |
be19d324 | 307 | int i, ii; |
affae2bf | 308 | |
8f8bd565 TR |
309 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) |
310 | for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++) | |
5e8baf87 | 311 | usb_set_maxpacket_ep(dev, i, ii); |
affae2bf | 312 | |
affae2bf WD |
313 | return 0; |
314 | } | |
315 | ||
316 | /******************************************************************************* | |
317 | * Parse the config, located in buffer, and fills the dev->config structure. | |
318 | * Note that all little/big endian swapping are done automatically. | |
319 | */ | |
c08b1b26 MV |
320 | static int usb_parse_config(struct usb_device *dev, |
321 | unsigned char *buffer, int cfgno) | |
affae2bf WD |
322 | { |
323 | struct usb_descriptor_header *head; | |
7455af41 BS |
324 | int index, ifno, epno, curr_if_num; |
325 | int i; | |
b2fb47f1 | 326 | u16 ep_wMaxPacketSize; |
7455af41 BS |
327 | |
328 | ifno = -1; | |
329 | epno = -1; | |
330 | curr_if_num = -1; | |
331 | ||
332 | dev->configno = cfgno; | |
333 | head = (struct usb_descriptor_header *) &buffer[0]; | |
6f5794a6 RB |
334 | if (head->bDescriptorType != USB_DT_CONFIG) { |
335 | printf(" ERROR: NOT USB_CONFIG_DESC %x\n", | |
336 | head->bDescriptorType); | |
affae2bf WD |
337 | return -1; |
338 | } | |
7455af41 | 339 | memcpy(&dev->config, buffer, buffer[0]); |
8f8bd565 | 340 | le16_to_cpus(&(dev->config.desc.wTotalLength)); |
7455af41 | 341 | dev->config.no_of_if = 0; |
affae2bf | 342 | |
8f8bd565 | 343 | index = dev->config.desc.bLength; |
6f5794a6 RB |
344 | /* Ok the first entry must be a configuration entry, |
345 | * now process the others */ | |
7455af41 | 346 | head = (struct usb_descriptor_header *) &buffer[index]; |
8f8bd565 | 347 | while (index + 1 < dev->config.desc.wTotalLength) { |
6f5794a6 RB |
348 | switch (head->bDescriptorType) { |
349 | case USB_DT_INTERFACE: | |
350 | if (((struct usb_interface_descriptor *) \ | |
351 | &buffer[index])->bInterfaceNumber != curr_if_num) { | |
352 | /* this is a new interface, copy new desc */ | |
353 | ifno = dev->config.no_of_if; | |
354 | dev->config.no_of_if++; | |
355 | memcpy(&dev->config.if_desc[ifno], | |
7455af41 | 356 | &buffer[index], buffer[index]); |
6f5794a6 RB |
357 | dev->config.if_desc[ifno].no_of_ep = 0; |
358 | dev->config.if_desc[ifno].num_altsetting = 1; | |
359 | curr_if_num = | |
8f8bd565 | 360 | dev->config.if_desc[ifno].desc.bInterfaceNumber; |
6f5794a6 RB |
361 | } else { |
362 | /* found alternate setting for the interface */ | |
363 | dev->config.if_desc[ifno].num_altsetting++; | |
364 | } | |
365 | break; | |
366 | case USB_DT_ENDPOINT: | |
367 | epno = dev->config.if_desc[ifno].no_of_ep; | |
368 | /* found an endpoint */ | |
369 | dev->config.if_desc[ifno].no_of_ep++; | |
370 | memcpy(&dev->config.if_desc[ifno].ep_desc[epno], | |
371 | &buffer[index], buffer[index]); | |
b2fb47f1 TR |
372 | ep_wMaxPacketSize = get_unaligned(&dev->config.\ |
373 | if_desc[ifno].\ | |
374 | ep_desc[epno].\ | |
375 | wMaxPacketSize); | |
376 | put_unaligned(le16_to_cpu(ep_wMaxPacketSize), | |
377 | &dev->config.\ | |
378 | if_desc[ifno].\ | |
379 | ep_desc[epno].\ | |
380 | wMaxPacketSize); | |
6f5794a6 RB |
381 | USB_PRINTF("if %d, ep %d\n", ifno, epno); |
382 | break; | |
383 | default: | |
384 | if (head->bLength == 0) | |
385 | return 1; | |
386 | ||
387 | USB_PRINTF("unknown Description Type : %x\n", | |
388 | head->bDescriptorType); | |
389 | ||
390 | { | |
fad2e1b0 WD |
391 | #ifdef USB_DEBUG |
392 | unsigned char *ch = (unsigned char *)head; | |
393 | #endif | |
6f5794a6 RB |
394 | for (i = 0; i < head->bLength; i++) |
395 | USB_PRINTF("%02X ", *ch++); | |
396 | USB_PRINTF("\n\n\n"); | |
397 | } | |
398 | break; | |
affae2bf | 399 | } |
7455af41 BS |
400 | index += head->bLength; |
401 | head = (struct usb_descriptor_header *)&buffer[index]; | |
affae2bf WD |
402 | } |
403 | return 1; | |
404 | } | |
405 | ||
406 | /*********************************************************************** | |
407 | * Clears an endpoint | |
408 | * endp: endpoint number in bits 0-3; | |
409 | * direction flag in bit 7 (1 = IN, 0 = OUT) | |
410 | */ | |
411 | int usb_clear_halt(struct usb_device *dev, int pipe) | |
412 | { | |
413 | int result; | |
9c998aa8 | 414 | int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); |
affae2bf WD |
415 | |
416 | result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
417 | USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, |
418 | endp, NULL, 0, USB_CNTL_TIMEOUT * 3); | |
affae2bf WD |
419 | |
420 | /* don't clear if failed */ | |
421 | if (result < 0) | |
422 | return result; | |
9c998aa8 | 423 | |
095b8a37 | 424 | /* |
9c998aa8 WD |
425 | * NOTE: we do not get status and verify reset was successful |
426 | * as some devices are reported to lock up upon this check.. | |
427 | */ | |
428 | ||
affae2bf | 429 | usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); |
9c998aa8 | 430 | |
affae2bf WD |
431 | /* toggle is reset on clear */ |
432 | usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0); | |
433 | return 0; | |
434 | } | |
435 | ||
436 | ||
437 | /********************************************************************** | |
438 | * get_descriptor type | |
439 | */ | |
c08b1b26 | 440 | static int usb_get_descriptor(struct usb_device *dev, unsigned char type, |
6f5794a6 | 441 | unsigned char index, void *buf, int size) |
affae2bf WD |
442 | { |
443 | int res; | |
53677ef1 | 444 | res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
affae2bf WD |
445 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, |
446 | (type << 8) + index, 0, | |
447 | buf, size, USB_CNTL_TIMEOUT); | |
448 | return res; | |
449 | } | |
450 | ||
451 | /********************************************************************** | |
452 | * gets configuration cfgno and store it in the buffer | |
453 | */ | |
6f5794a6 RB |
454 | int usb_get_configuration_no(struct usb_device *dev, |
455 | unsigned char *buffer, int cfgno) | |
affae2bf | 456 | { |
53677ef1 | 457 | int result; |
affae2bf | 458 | unsigned int tmp; |
8f8bd565 | 459 | struct usb_configuration_descriptor *config; |
affae2bf | 460 | |
8f8bd565 | 461 | config = (struct usb_configuration_descriptor *)&buffer[0]; |
48867208 RB |
462 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9); |
463 | if (result < 9) { | |
affae2bf | 464 | if (result < 0) |
6f5794a6 RB |
465 | printf("unable to get descriptor, error %lX\n", |
466 | dev->status); | |
affae2bf | 467 | else |
6f5794a6 | 468 | printf("config descriptor too short " \ |
48867208 | 469 | "(expected %i, got %i)\n", 9, result); |
affae2bf WD |
470 | return -1; |
471 | } | |
c918261c | 472 | tmp = le16_to_cpu(config->wTotalLength); |
affae2bf | 473 | |
cd0a9de6 | 474 | if (tmp > USB_BUFSIZ) { |
6f5794a6 RB |
475 | USB_PRINTF("usb_get_configuration_no: failed to get " \ |
476 | "descriptor - too long: %d\n", tmp); | |
cd0a9de6 WD |
477 | return -1; |
478 | } | |
479 | ||
affae2bf | 480 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp); |
6f5794a6 RB |
481 | USB_PRINTF("get_conf_no %d Result %d, wLength %d\n", |
482 | cfgno, result, tmp); | |
affae2bf WD |
483 | return result; |
484 | } | |
485 | ||
486 | /******************************************************************** | |
487 | * set address of a device to the value in dev->devnum. | |
488 | * This can only be done by addressing the device via the default address (0) | |
489 | */ | |
c08b1b26 | 490 | static int usb_set_address(struct usb_device *dev) |
affae2bf WD |
491 | { |
492 | int res; | |
493 | ||
6f5794a6 RB |
494 | USB_PRINTF("set address %d\n", dev->devnum); |
495 | res = usb_control_msg(dev, usb_snddefctrl(dev), | |
496 | USB_REQ_SET_ADDRESS, 0, | |
497 | (dev->devnum), 0, | |
498 | NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
499 | return res; |
500 | } | |
501 | ||
502 | /******************************************************************** | |
503 | * set interface number to interface | |
504 | */ | |
505 | int usb_set_interface(struct usb_device *dev, int interface, int alternate) | |
506 | { | |
8f8bd565 | 507 | struct usb_interface *if_face = NULL; |
affae2bf WD |
508 | int ret, i; |
509 | ||
8f8bd565 TR |
510 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) { |
511 | if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) { | |
affae2bf WD |
512 | if_face = &dev->config.if_desc[i]; |
513 | break; | |
514 | } | |
515 | } | |
516 | if (!if_face) { | |
517 | printf("selecting invalid interface %d", interface); | |
518 | return -1; | |
519 | } | |
7455af41 BS |
520 | /* |
521 | * We should return now for devices with only one alternate setting. | |
6f5794a6 RB |
522 | * According to 9.4.10 of the Universal Serial Bus Specification |
523 | * Revision 2.0 such devices can return with a STALL. This results in | |
524 | * some USB sticks timeouting during initialization and then being | |
525 | * unusable in U-Boot. | |
7455af41 BS |
526 | */ |
527 | if (if_face->num_altsetting == 1) | |
528 | return 0; | |
affae2bf | 529 | |
6f5794a6 RB |
530 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
531 | USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, | |
532 | alternate, interface, NULL, 0, | |
533 | USB_CNTL_TIMEOUT * 5); | |
534 | if (ret < 0) | |
affae2bf WD |
535 | return ret; |
536 | ||
affae2bf WD |
537 | return 0; |
538 | } | |
539 | ||
540 | /******************************************************************** | |
541 | * set configuration number to configuration | |
542 | */ | |
c08b1b26 | 543 | static int usb_set_configuration(struct usb_device *dev, int configuration) |
affae2bf WD |
544 | { |
545 | int res; | |
6f5794a6 | 546 | USB_PRINTF("set configuration %d\n", configuration); |
affae2bf | 547 | /* set setup command */ |
6f5794a6 RB |
548 | res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
549 | USB_REQ_SET_CONFIGURATION, 0, | |
550 | configuration, 0, | |
551 | NULL, 0, USB_CNTL_TIMEOUT); | |
552 | if (res == 0) { | |
affae2bf WD |
553 | dev->toggle[0] = 0; |
554 | dev->toggle[1] = 0; | |
555 | return 0; | |
6f5794a6 | 556 | } else |
affae2bf WD |
557 | return -1; |
558 | } | |
559 | ||
560 | /******************************************************************** | |
561 | * set protocol to protocol | |
562 | */ | |
563 | int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol) | |
564 | { | |
565 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
566 | USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
567 | protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
568 | } | |
569 | ||
570 | /******************************************************************** | |
571 | * set idle | |
572 | */ | |
573 | int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id) | |
574 | { | |
575 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
576 | USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
577 | (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
578 | } | |
579 | ||
580 | /******************************************************************** | |
581 | * get report | |
582 | */ | |
6f5794a6 RB |
583 | int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, |
584 | unsigned char id, void *buf, int size) | |
affae2bf WD |
585 | { |
586 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
6f5794a6 RB |
587 | USB_REQ_GET_REPORT, |
588 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
589 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
affae2bf WD |
590 | } |
591 | ||
592 | /******************************************************************** | |
593 | * get class descriptor | |
594 | */ | |
595 | int usb_get_class_descriptor(struct usb_device *dev, int ifnum, | |
596 | unsigned char type, unsigned char id, void *buf, int size) | |
597 | { | |
598 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
599 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
600 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
601 | } | |
602 | ||
603 | /******************************************************************** | |
604 | * get string index in buffer | |
605 | */ | |
c08b1b26 | 606 | static int usb_get_string(struct usb_device *dev, unsigned short langid, |
6f5794a6 | 607 | unsigned char index, void *buf, int size) |
affae2bf | 608 | { |
9c998aa8 WD |
609 | int i; |
610 | int result; | |
611 | ||
612 | for (i = 0; i < 3; ++i) { | |
613 | /* some devices are flaky */ | |
614 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
615 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, | |
095b8a37 | 616 | (USB_DT_STRING << 8) + index, langid, buf, size, |
9c998aa8 WD |
617 | USB_CNTL_TIMEOUT); |
618 | ||
619 | if (result > 0) | |
620 | break; | |
095b8a37 WD |
621 | } |
622 | ||
9c998aa8 WD |
623 | return result; |
624 | } | |
625 | ||
626 | ||
627 | static void usb_try_string_workarounds(unsigned char *buf, int *length) | |
628 | { | |
629 | int newlength, oldlength = *length; | |
630 | ||
631 | for (newlength = 2; newlength + 1 < oldlength; newlength += 2) | |
632 | if (!isprint(buf[newlength]) || buf[newlength + 1]) | |
633 | break; | |
634 | ||
635 | if (newlength > 2) { | |
636 | buf[0] = newlength; | |
637 | *length = newlength; | |
638 | } | |
affae2bf WD |
639 | } |
640 | ||
9c998aa8 WD |
641 | |
642 | static int usb_string_sub(struct usb_device *dev, unsigned int langid, | |
643 | unsigned int index, unsigned char *buf) | |
644 | { | |
645 | int rc; | |
646 | ||
647 | /* Try to read the string descriptor by asking for the maximum | |
648 | * possible number of bytes */ | |
649 | rc = usb_get_string(dev, langid, index, buf, 255); | |
650 | ||
651 | /* If that failed try to read the descriptor length, then | |
652 | * ask for just that many bytes */ | |
653 | if (rc < 2) { | |
654 | rc = usb_get_string(dev, langid, index, buf, 2); | |
655 | if (rc == 2) | |
656 | rc = usb_get_string(dev, langid, index, buf, buf[0]); | |
657 | } | |
658 | ||
659 | if (rc >= 2) { | |
660 | if (!buf[0] && !buf[1]) | |
661 | usb_try_string_workarounds(buf, &rc); | |
662 | ||
663 | /* There might be extra junk at the end of the descriptor */ | |
664 | if (buf[0] < rc) | |
665 | rc = buf[0]; | |
666 | ||
667 | rc = rc - (rc & 1); /* force a multiple of two */ | |
668 | } | |
669 | ||
670 | if (rc < 2) | |
095b8a37 | 671 | rc = -1; |
9c998aa8 WD |
672 | |
673 | return rc; | |
674 | } | |
675 | ||
676 | ||
affae2bf WD |
677 | /******************************************************************** |
678 | * usb_string: | |
679 | * Get string index and translate it to ascii. | |
680 | * returns string length (> 0) or error (< 0) | |
681 | */ | |
682 | int usb_string(struct usb_device *dev, int index, char *buf, size_t size) | |
683 | { | |
cd0a9de6 | 684 | unsigned char mybuf[USB_BUFSIZ]; |
affae2bf WD |
685 | unsigned char *tbuf; |
686 | int err; | |
687 | unsigned int u, idx; | |
688 | ||
689 | if (size <= 0 || !buf || !index) | |
690 | return -1; | |
691 | buf[0] = 0; | |
d0ff51ba | 692 | tbuf = &mybuf[0]; |
affae2bf WD |
693 | |
694 | /* get langid for strings if it's not yet known */ | |
695 | if (!dev->have_langid) { | |
9c998aa8 | 696 | err = usb_string_sub(dev, 0, 0, tbuf); |
affae2bf | 697 | if (err < 0) { |
6f5794a6 | 698 | USB_PRINTF("error getting string descriptor 0 " \ |
f1c1f540 | 699 | "(error=%lx)\n", dev->status); |
affae2bf WD |
700 | return -1; |
701 | } else if (tbuf[0] < 4) { | |
702 | USB_PRINTF("string descriptor 0 too short\n"); | |
703 | return -1; | |
704 | } else { | |
705 | dev->have_langid = -1; | |
6f5794a6 | 706 | dev->string_langid = tbuf[2] | (tbuf[3] << 8); |
affae2bf | 707 | /* always use the first langid listed */ |
6f5794a6 RB |
708 | USB_PRINTF("USB device number %d default " \ |
709 | "language ID 0x%x\n", | |
710 | dev->devnum, dev->string_langid); | |
affae2bf WD |
711 | } |
712 | } | |
cd0a9de6 | 713 | |
9c998aa8 | 714 | err = usb_string_sub(dev, dev->string_langid, index, tbuf); |
affae2bf WD |
715 | if (err < 0) |
716 | return err; | |
9c998aa8 | 717 | |
affae2bf WD |
718 | size--; /* leave room for trailing NULL char in output buffer */ |
719 | for (idx = 0, u = 2; u < err; u += 2) { | |
720 | if (idx >= size) | |
721 | break; | |
722 | if (tbuf[u+1]) /* high byte */ | |
723 | buf[idx++] = '?'; /* non-ASCII character */ | |
724 | else | |
725 | buf[idx++] = tbuf[u]; | |
726 | } | |
727 | buf[idx] = 0; | |
728 | err = idx; | |
729 | return err; | |
730 | } | |
731 | ||
732 | ||
733 | /******************************************************************** | |
734 | * USB device handling: | |
735 | * the USB device are static allocated [USB_MAX_DEVICE]. | |
736 | */ | |
737 | ||
738 | ||
739 | /* returns a pointer to the device with the index [index]. | |
740 | * if the device is not assigned (dev->devnum==-1) returns NULL | |
741 | */ | |
6f5794a6 | 742 | struct usb_device *usb_get_dev_index(int index) |
affae2bf | 743 | { |
6f5794a6 | 744 | if (usb_dev[index].devnum == -1) |
affae2bf WD |
745 | return NULL; |
746 | else | |
747 | return &usb_dev[index]; | |
748 | } | |
749 | ||
750 | ||
751 | /* returns a pointer of a new device structure or NULL, if | |
752 | * no device struct is available | |
753 | */ | |
23faf2bc | 754 | struct usb_device *usb_alloc_new_device(void) |
affae2bf WD |
755 | { |
756 | int i; | |
6f5794a6 RB |
757 | USB_PRINTF("New Device %d\n", dev_index); |
758 | if (dev_index == USB_MAX_DEVICE) { | |
759 | printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); | |
affae2bf WD |
760 | return NULL; |
761 | } | |
6f5794a6 RB |
762 | /* default Address is 0, real addresses start with 1 */ |
763 | usb_dev[dev_index].devnum = dev_index + 1; | |
764 | usb_dev[dev_index].maxchild = 0; | |
765 | for (i = 0; i < USB_MAXCHILDREN; i++) | |
766 | usb_dev[dev_index].children[i] = NULL; | |
767 | usb_dev[dev_index].parent = NULL; | |
affae2bf | 768 | dev_index++; |
6f5794a6 | 769 | return &usb_dev[dev_index - 1]; |
affae2bf WD |
770 | } |
771 | ||
772 | ||
773 | /* | |
774 | * By the time we get here, the device has gotten a new device ID | |
775 | * and is in the default state. We need to identify the thing and | |
776 | * get the ball rolling.. | |
777 | * | |
778 | * Returns 0 for success, != 0 for error. | |
779 | */ | |
23faf2bc | 780 | int usb_new_device(struct usb_device *dev) |
affae2bf WD |
781 | { |
782 | int addr, err; | |
783 | int tmp; | |
cd0a9de6 | 784 | unsigned char tmpbuf[USB_BUFSIZ]; |
affae2bf | 785 | |
affae2bf WD |
786 | /* We still haven't set the Address yet */ |
787 | addr = dev->devnum; | |
788 | dev->devnum = 0; | |
9c998aa8 | 789 | |
c9e8436b RB |
790 | #ifdef CONFIG_LEGACY_USB_INIT_SEQ |
791 | /* this is the old and known way of initializing devices, it is | |
792 | * different than what Windows and Linux are doing. Windows and Linux | |
793 | * both retrieve 64 bytes while reading the device descriptor | |
794 | * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an | |
795 | * invalid header while reading 8 bytes as device descriptor. */ | |
796 | dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */ | |
48867208 | 797 | dev->maxpacketsize = PACKET_SIZE_8; |
de39f8c1 | 798 | dev->epmaxpacketin[0] = 8; |
c9e8436b RB |
799 | dev->epmaxpacketout[0] = 8; |
800 | ||
801 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); | |
802 | if (err < 8) { | |
803 | printf("\n USB device not responding, " \ | |
de39f8c1 | 804 | "giving up (status=%lX)\n", dev->status); |
c9e8436b RB |
805 | return 1; |
806 | } | |
807 | #else | |
48867208 RB |
808 | /* This is a Windows scheme of initialization sequence, with double |
809 | * reset of the device (Linux uses the same sequence) | |
c9e8436b RB |
810 | * Some equipment is said to work only with such init sequence; this |
811 | * patch is based on the work by Alan Stern: | |
de39f8c1 MT |
812 | * http://sourceforge.net/mailarchive/forum.php? |
813 | * thread_id=5729457&forum_id=5398 | |
9c998aa8 | 814 | */ |
9c998aa8 WD |
815 | struct usb_device_descriptor *desc; |
816 | int port = -1; | |
817 | struct usb_device *parent = dev->parent; | |
818 | unsigned short portstatus; | |
819 | ||
820 | /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is | |
821 | * only 18 bytes long, this will terminate with a short packet. But if | |
822 | * the maxpacket size is 8 or 16 the device may be waiting to transmit | |
c9e8436b | 823 | * some more, or keeps on retransmitting the 8 byte header. */ |
9c998aa8 WD |
824 | |
825 | desc = (struct usb_device_descriptor *)tmpbuf; | |
c9e8436b | 826 | dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */ |
48867208 RB |
827 | /* Default to 64 byte max packet size */ |
828 | dev->maxpacketsize = PACKET_SIZE_64; | |
de39f8c1 | 829 | dev->epmaxpacketin[0] = 64; |
c9e8436b | 830 | dev->epmaxpacketout[0] = 64; |
48867208 RB |
831 | |
832 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64); | |
833 | if (err < 0) { | |
834 | USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n"); | |
835 | return 1; | |
9c998aa8 | 836 | } |
48867208 | 837 | |
9c998aa8 | 838 | dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0; |
095b8a37 | 839 | |
9c998aa8 WD |
840 | /* find the port number we're at */ |
841 | if (parent) { | |
48867208 | 842 | int j; |
095b8a37 | 843 | |
9c998aa8 WD |
844 | for (j = 0; j < parent->maxchild; j++) { |
845 | if (parent->children[j] == dev) { | |
846 | port = j; | |
847 | break; | |
848 | } | |
849 | } | |
850 | if (port < 0) { | |
6f5794a6 | 851 | printf("usb_new_device:cannot locate device's port.\n"); |
9c998aa8 WD |
852 | return 1; |
853 | } | |
854 | ||
855 | /* reset the port for the second time */ | |
856 | err = hub_port_reset(dev->parent, port, &portstatus); | |
857 | if (err < 0) { | |
858 | printf("\n Couldn't reset port %i\n", port); | |
859 | return 1; | |
860 | } | |
861 | } | |
9c998aa8 WD |
862 | #endif |
863 | ||
de39f8c1 | 864 | dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; |
affae2bf WD |
865 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; |
866 | switch (dev->descriptor.bMaxPacketSize0) { | |
de39f8c1 MT |
867 | case 8: |
868 | dev->maxpacketsize = PACKET_SIZE_8; | |
869 | break; | |
870 | case 16: | |
871 | dev->maxpacketsize = PACKET_SIZE_16; | |
872 | break; | |
873 | case 32: | |
874 | dev->maxpacketsize = PACKET_SIZE_32; | |
875 | break; | |
876 | case 64: | |
877 | dev->maxpacketsize = PACKET_SIZE_64; | |
878 | break; | |
affae2bf WD |
879 | } |
880 | dev->devnum = addr; | |
881 | ||
882 | err = usb_set_address(dev); /* set address */ | |
883 | ||
884 | if (err < 0) { | |
6f5794a6 RB |
885 | printf("\n USB device not accepting new address " \ |
886 | "(error=%lX)\n", dev->status); | |
affae2bf WD |
887 | return 1; |
888 | } | |
889 | ||
5b84dd67 | 890 | mdelay(10); /* Let the SET_ADDRESS settle */ |
affae2bf WD |
891 | |
892 | tmp = sizeof(dev->descriptor); | |
893 | ||
6f5794a6 RB |
894 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, |
895 | &dev->descriptor, sizeof(dev->descriptor)); | |
affae2bf WD |
896 | if (err < tmp) { |
897 | if (err < 0) | |
6f5794a6 RB |
898 | printf("unable to get device descriptor (error=%d)\n", |
899 | err); | |
affae2bf | 900 | else |
6f5794a6 RB |
901 | printf("USB device descriptor short read " \ |
902 | "(expected %i, got %i)\n", tmp, err); | |
affae2bf WD |
903 | return 1; |
904 | } | |
905 | /* correct le values */ | |
c918261c CE |
906 | le16_to_cpus(&dev->descriptor.bcdUSB); |
907 | le16_to_cpus(&dev->descriptor.idVendor); | |
908 | le16_to_cpus(&dev->descriptor.idProduct); | |
909 | le16_to_cpus(&dev->descriptor.bcdDevice); | |
affae2bf | 910 | /* only support for one config for now */ |
6f5794a6 RB |
911 | usb_get_configuration_no(dev, &tmpbuf[0], 0); |
912 | usb_parse_config(dev, &tmpbuf[0], 0); | |
affae2bf WD |
913 | usb_set_maxpacket(dev); |
914 | /* we set the default configuration here */ | |
8f8bd565 | 915 | if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) { |
6f5794a6 RB |
916 | printf("failed to set default configuration " \ |
917 | "len %d, status %lX\n", dev->act_len, dev->status); | |
affae2bf WD |
918 | return -1; |
919 | } | |
920 | USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", | |
6f5794a6 RB |
921 | dev->descriptor.iManufacturer, dev->descriptor.iProduct, |
922 | dev->descriptor.iSerialNumber); | |
affae2bf WD |
923 | memset(dev->mf, 0, sizeof(dev->mf)); |
924 | memset(dev->prod, 0, sizeof(dev->prod)); | |
925 | memset(dev->serial, 0, sizeof(dev->serial)); | |
926 | if (dev->descriptor.iManufacturer) | |
6f5794a6 RB |
927 | usb_string(dev, dev->descriptor.iManufacturer, |
928 | dev->mf, sizeof(dev->mf)); | |
affae2bf | 929 | if (dev->descriptor.iProduct) |
6f5794a6 RB |
930 | usb_string(dev, dev->descriptor.iProduct, |
931 | dev->prod, sizeof(dev->prod)); | |
affae2bf | 932 | if (dev->descriptor.iSerialNumber) |
6f5794a6 RB |
933 | usb_string(dev, dev->descriptor.iSerialNumber, |
934 | dev->serial, sizeof(dev->serial)); | |
affae2bf WD |
935 | USB_PRINTF("Manufacturer %s\n", dev->mf); |
936 | USB_PRINTF("Product %s\n", dev->prod); | |
937 | USB_PRINTF("SerialNumber %s\n", dev->serial); | |
938 | /* now prode if the device is a hub */ | |
6f5794a6 | 939 | usb_hub_probe(dev, 0); |
affae2bf WD |
940 | return 0; |
941 | } | |
942 | ||
943 | /* build device Tree */ | |
c08b1b26 | 944 | static void usb_scan_devices(void) |
affae2bf WD |
945 | { |
946 | int i; | |
947 | struct usb_device *dev; | |
948 | ||
949 | /* first make all devices unknown */ | |
6f5794a6 RB |
950 | for (i = 0; i < USB_MAX_DEVICE; i++) { |
951 | memset(&usb_dev[i], 0, sizeof(struct usb_device)); | |
d0ff51ba | 952 | usb_dev[i].devnum = -1; |
affae2bf | 953 | } |
6f5794a6 | 954 | dev_index = 0; |
affae2bf | 955 | /* device 0 is always present (root hub, so let it analyze) */ |
6f5794a6 | 956 | dev = usb_alloc_new_device(); |
1a448db7 BW |
957 | if (usb_new_device(dev)) |
958 | printf("No USB Device found\n"); | |
959 | else | |
960 | printf("%d USB Device(s) found\n", dev_index); | |
affae2bf WD |
961 | /* insert "driver" if possible */ |
962 | #ifdef CONFIG_USB_KEYBOARD | |
963 | drv_usb_kbd_init(); | |
affae2bf | 964 | #endif |
2a94dda0 | 965 | USB_PRINTF("scan end\n"); |
affae2bf WD |
966 | } |
967 | ||
affae2bf | 968 | /* EOF */ |