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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> |
affae2bf | 52 | |
affae2bf WD |
53 | #include <usb.h> |
54 | #ifdef CONFIG_4xx | |
3048bcbf | 55 | #include <asm/4xx_pci.h> |
affae2bf WD |
56 | #endif |
57 | ||
095b8a37 | 58 | #undef USB_DEBUG |
affae2bf WD |
59 | |
60 | #ifdef USB_DEBUG | |
de39f8c1 | 61 | #define USB_PRINTF(fmt, args...) printf(fmt , ##args) |
affae2bf | 62 | #else |
6f5794a6 | 63 | #define USB_PRINTF(fmt, args...) |
affae2bf WD |
64 | #endif |
65 | ||
cd0a9de6 WD |
66 | #define USB_BUFSIZ 512 |
67 | ||
affae2bf WD |
68 | static struct usb_device usb_dev[USB_MAX_DEVICE]; |
69 | static int dev_index; | |
70 | static int running; | |
71 | static int asynch_allowed; | |
72 | static struct devrequest setup_packet; | |
73 | ||
e51aae38 BS |
74 | char usb_started; /* flag for the started/stopped USB status */ |
75 | ||
affae2bf WD |
76 | /********************************************************************** |
77 | * some forward declerations... | |
78 | */ | |
79 | void usb_scan_devices(void); | |
80 | ||
81 | int usb_hub_probe(struct usb_device *dev, int ifnum); | |
82 | void usb_hub_reset(void); | |
c9e8436b RB |
83 | static int hub_port_reset(struct usb_device *dev, int port, |
84 | unsigned short *portstat); | |
9c998aa8 | 85 | |
affae2bf WD |
86 | /*********************************************************************** |
87 | * wait_ms | |
88 | */ | |
89 | ||
de39f8c1 | 90 | inline void wait_ms(unsigned long ms) |
affae2bf | 91 | { |
6f5794a6 | 92 | while (ms-- > 0) |
affae2bf WD |
93 | udelay(1000); |
94 | } | |
de39f8c1 | 95 | |
affae2bf WD |
96 | /*************************************************************************** |
97 | * Init USB Device | |
98 | */ | |
99 | ||
100 | int usb_init(void) | |
101 | { | |
102 | int result; | |
103 | ||
6f5794a6 RB |
104 | running = 0; |
105 | dev_index = 0; | |
106 | asynch_allowed = 1; | |
affae2bf WD |
107 | usb_hub_reset(); |
108 | /* init low_level USB */ | |
109 | printf("USB: "); | |
110 | result = usb_lowlevel_init(); | |
6f5794a6 RB |
111 | /* if lowlevel init is OK, scan the bus for devices |
112 | * i.e. search HUBs and configure them */ | |
113 | if (result == 0) { | |
affae2bf | 114 | printf("scanning bus for devices... "); |
6f5794a6 | 115 | running = 1; |
affae2bf | 116 | usb_scan_devices(); |
e51aae38 | 117 | usb_started = 1; |
affae2bf | 118 | return 0; |
6f5794a6 | 119 | } else { |
affae2bf | 120 | printf("Error, couldn't init Lowlevel part\n"); |
e51aae38 | 121 | usb_started = 0; |
affae2bf WD |
122 | return -1; |
123 | } | |
124 | } | |
125 | ||
126 | /****************************************************************************** | |
127 | * Stop USB this stops the LowLevel Part and deregisters USB devices. | |
128 | */ | |
129 | int usb_stop(void) | |
130 | { | |
eba1f2fc RB |
131 | int res = 0; |
132 | ||
133 | if (usb_started) { | |
134 | asynch_allowed = 1; | |
135 | usb_started = 0; | |
136 | usb_hub_reset(); | |
137 | res = usb_lowlevel_stop(); | |
138 | } | |
139 | return res; | |
affae2bf WD |
140 | } |
141 | ||
142 | /* | |
143 | * disables the asynch behaviour of the control message. This is used for data | |
144 | * transfers that uses the exclusiv access to the control and bulk messages. | |
145 | */ | |
146 | void usb_disable_asynch(int disable) | |
147 | { | |
6f5794a6 | 148 | asynch_allowed = !disable; |
affae2bf WD |
149 | } |
150 | ||
151 | ||
152 | /*------------------------------------------------------------------- | |
153 | * Message wrappers. | |
154 | * | |
155 | */ | |
156 | ||
157 | /* | |
158 | * submits an Interrupt Message | |
159 | */ | |
160 | int usb_submit_int_msg(struct usb_device *dev, unsigned long pipe, | |
6f5794a6 | 161 | void *buffer, int transfer_len, int interval) |
affae2bf | 162 | { |
6f5794a6 | 163 | return submit_int_msg(dev, pipe, buffer, transfer_len, interval); |
affae2bf WD |
164 | } |
165 | ||
166 | /* | |
167 | * submits a control message and waits for comletion (at least timeout * 1ms) | |
168 | * If timeout is 0, we don't wait for completion (used as example to set and | |
169 | * clear keyboards LEDs). For data transfers, (storage transfers) we don't | |
170 | * allow control messages with 0 timeout, by previousely resetting the flag | |
171 | * asynch_allowed (usb_disable_asynch(1)). | |
172 | * returns the transfered length if OK or -1 if error. The transfered length | |
173 | * and the current status are stored in the dev->act_len and dev->status. | |
174 | */ | |
175 | int usb_control_msg(struct usb_device *dev, unsigned int pipe, | |
176 | unsigned char request, unsigned char requesttype, | |
177 | unsigned short value, unsigned short index, | |
178 | void *data, unsigned short size, int timeout) | |
179 | { | |
6f5794a6 RB |
180 | if ((timeout == 0) && (!asynch_allowed)) { |
181 | /* request for a asynch control pipe is not allowed */ | |
affae2bf | 182 | return -1; |
6f5794a6 | 183 | } |
9c998aa8 | 184 | |
affae2bf WD |
185 | /* set setup command */ |
186 | setup_packet.requesttype = requesttype; | |
187 | setup_packet.request = request; | |
c918261c CE |
188 | setup_packet.value = cpu_to_le16(value); |
189 | setup_packet.index = cpu_to_le16(index); | |
190 | setup_packet.length = cpu_to_le16(size); | |
6f5794a6 RB |
191 | USB_PRINTF("usb_control_msg: request: 0x%X, requesttype: 0x%X, " \ |
192 | "value 0x%X index 0x%X length 0x%X\n", | |
193 | request, requesttype, value, index, size); | |
194 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ | |
affae2bf | 195 | |
6f5794a6 RB |
196 | submit_control_msg(dev, pipe, data, size, &setup_packet); |
197 | if (timeout == 0) | |
affae2bf | 198 | return (int)size; |
6f5794a6 | 199 | |
84d36b30 RB |
200 | /* |
201 | * Wait for status to update until timeout expires, USB driver | |
202 | * interrupt handler may set the status when the USB operation has | |
203 | * been completed. | |
204 | */ | |
205 | while (timeout--) { | |
206 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
207 | break; | |
208 | wait_ms(1); | |
48867208 | 209 | } |
84d36b30 RB |
210 | if (dev->status) |
211 | return -1; | |
48867208 RB |
212 | |
213 | return dev->act_len; | |
84d36b30 | 214 | |
affae2bf WD |
215 | } |
216 | ||
217 | /*------------------------------------------------------------------- | |
218 | * submits bulk message, and waits for completion. returns 0 if Ok or | |
219 | * -1 if Error. | |
220 | * synchronous behavior | |
221 | */ | |
222 | int usb_bulk_msg(struct usb_device *dev, unsigned int pipe, | |
223 | void *data, int len, int *actual_length, int timeout) | |
224 | { | |
225 | if (len < 0) | |
226 | return -1; | |
6f5794a6 RB |
227 | dev->status = USB_ST_NOT_PROC; /*not yet processed */ |
228 | submit_bulk_msg(dev, pipe, data, len); | |
229 | while (timeout--) { | |
230 | if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC)) | |
affae2bf WD |
231 | break; |
232 | wait_ms(1); | |
233 | } | |
6f5794a6 RB |
234 | *actual_length = dev->act_len; |
235 | if (dev->status == 0) | |
affae2bf WD |
236 | return 0; |
237 | else | |
238 | return -1; | |
239 | } | |
240 | ||
241 | ||
242 | /*------------------------------------------------------------------- | |
243 | * Max Packet stuff | |
244 | */ | |
245 | ||
246 | /* | |
247 | * returns the max packet size, depending on the pipe direction and | |
248 | * the configurations values | |
249 | */ | |
6f5794a6 | 250 | int usb_maxpacket(struct usb_device *dev, unsigned long pipe) |
affae2bf | 251 | { |
6f5794a6 RB |
252 | /* direction is out -> use emaxpacket out */ |
253 | if ((pipe & USB_DIR_IN) == 0) | |
de39f8c1 | 254 | return dev->epmaxpacketout[((pipe>>15) & 0xf)]; |
affae2bf | 255 | else |
de39f8c1 | 256 | return dev->epmaxpacketin[((pipe>>15) & 0xf)]; |
affae2bf WD |
257 | } |
258 | ||
be19d324 RB |
259 | /* The routine usb_set_maxpacket_ep() is extracted from the loop of routine |
260 | * usb_set_maxpacket(), because the optimizer of GCC 4.x chokes on this routine | |
261 | * when it is inlined in 1 single routine. What happens is that the register r3 | |
262 | * is used as loop-count 'i', but gets overwritten later on. | |
263 | * This is clearly a compiler bug, but it is easier to workaround it here than | |
264 | * to update the compiler (Occurs with at least several GCC 4.{1,2},x | |
265 | * CodeSourcery compilers like e.g. 2007q3, 2008q1, 2008q3 lite editions on ARM) | |
266 | */ | |
267 | static void __attribute__((noinline)) | |
268 | usb_set_maxpacket_ep(struct usb_device *dev, struct usb_endpoint_descriptor *ep) | |
269 | { | |
270 | int b; | |
271 | ||
272 | b = ep->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK; | |
273 | ||
274 | if ((ep->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == | |
275 | USB_ENDPOINT_XFER_CONTROL) { | |
276 | /* Control => bidirectional */ | |
277 | dev->epmaxpacketout[b] = ep->wMaxPacketSize; | |
de39f8c1 | 278 | dev->epmaxpacketin[b] = ep->wMaxPacketSize; |
be19d324 RB |
279 | USB_PRINTF("##Control EP epmaxpacketout/in[%d] = %d\n", |
280 | b, dev->epmaxpacketin[b]); | |
281 | } else { | |
282 | if ((ep->bEndpointAddress & 0x80) == 0) { | |
283 | /* OUT Endpoint */ | |
284 | if (ep->wMaxPacketSize > dev->epmaxpacketout[b]) { | |
285 | dev->epmaxpacketout[b] = ep->wMaxPacketSize; | |
286 | USB_PRINTF("##EP epmaxpacketout[%d] = %d\n", | |
287 | b, dev->epmaxpacketout[b]); | |
288 | } | |
289 | } else { | |
290 | /* IN Endpoint */ | |
291 | if (ep->wMaxPacketSize > dev->epmaxpacketin[b]) { | |
292 | dev->epmaxpacketin[b] = ep->wMaxPacketSize; | |
293 | USB_PRINTF("##EP epmaxpacketin[%d] = %d\n", | |
294 | b, dev->epmaxpacketin[b]); | |
295 | } | |
296 | } /* if out */ | |
297 | } /* if control */ | |
298 | } | |
299 | ||
affae2bf WD |
300 | /* |
301 | * set the max packed value of all endpoints in the given configuration | |
302 | */ | |
303 | int usb_set_maxpacket(struct usb_device *dev) | |
304 | { | |
be19d324 | 305 | int i, ii; |
affae2bf | 306 | |
8f8bd565 TR |
307 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) |
308 | for (ii = 0; ii < dev->config.if_desc[i].desc.bNumEndpoints; ii++) | |
be19d324 RB |
309 | usb_set_maxpacket_ep(dev, |
310 | &dev->config.if_desc[i].ep_desc[ii]); | |
affae2bf | 311 | |
affae2bf WD |
312 | return 0; |
313 | } | |
314 | ||
315 | /******************************************************************************* | |
316 | * Parse the config, located in buffer, and fills the dev->config structure. | |
317 | * Note that all little/big endian swapping are done automatically. | |
318 | */ | |
319 | int usb_parse_config(struct usb_device *dev, unsigned char *buffer, int cfgno) | |
320 | { | |
321 | struct usb_descriptor_header *head; | |
7455af41 BS |
322 | int index, ifno, epno, curr_if_num; |
323 | int i; | |
324 | unsigned char *ch; | |
325 | ||
326 | ifno = -1; | |
327 | epno = -1; | |
328 | curr_if_num = -1; | |
329 | ||
330 | dev->configno = cfgno; | |
331 | head = (struct usb_descriptor_header *) &buffer[0]; | |
6f5794a6 RB |
332 | if (head->bDescriptorType != USB_DT_CONFIG) { |
333 | printf(" ERROR: NOT USB_CONFIG_DESC %x\n", | |
334 | head->bDescriptorType); | |
affae2bf WD |
335 | return -1; |
336 | } | |
7455af41 | 337 | memcpy(&dev->config, buffer, buffer[0]); |
8f8bd565 | 338 | le16_to_cpus(&(dev->config.desc.wTotalLength)); |
7455af41 | 339 | dev->config.no_of_if = 0; |
affae2bf | 340 | |
8f8bd565 | 341 | index = dev->config.desc.bLength; |
6f5794a6 RB |
342 | /* Ok the first entry must be a configuration entry, |
343 | * now process the others */ | |
7455af41 | 344 | head = (struct usb_descriptor_header *) &buffer[index]; |
8f8bd565 | 345 | while (index + 1 < dev->config.desc.wTotalLength) { |
6f5794a6 RB |
346 | switch (head->bDescriptorType) { |
347 | case USB_DT_INTERFACE: | |
348 | if (((struct usb_interface_descriptor *) \ | |
349 | &buffer[index])->bInterfaceNumber != curr_if_num) { | |
350 | /* this is a new interface, copy new desc */ | |
351 | ifno = dev->config.no_of_if; | |
352 | dev->config.no_of_if++; | |
353 | memcpy(&dev->config.if_desc[ifno], | |
7455af41 | 354 | &buffer[index], buffer[index]); |
6f5794a6 RB |
355 | dev->config.if_desc[ifno].no_of_ep = 0; |
356 | dev->config.if_desc[ifno].num_altsetting = 1; | |
357 | curr_if_num = | |
8f8bd565 | 358 | dev->config.if_desc[ifno].desc.bInterfaceNumber; |
6f5794a6 RB |
359 | } else { |
360 | /* found alternate setting for the interface */ | |
361 | dev->config.if_desc[ifno].num_altsetting++; | |
362 | } | |
363 | break; | |
364 | case USB_DT_ENDPOINT: | |
365 | epno = dev->config.if_desc[ifno].no_of_ep; | |
366 | /* found an endpoint */ | |
367 | dev->config.if_desc[ifno].no_of_ep++; | |
368 | memcpy(&dev->config.if_desc[ifno].ep_desc[epno], | |
369 | &buffer[index], buffer[index]); | |
370 | le16_to_cpus(&(dev->config.if_desc[ifno].ep_desc[epno].\ | |
371 | wMaxPacketSize)); | |
372 | USB_PRINTF("if %d, ep %d\n", ifno, epno); | |
373 | break; | |
374 | default: | |
375 | if (head->bLength == 0) | |
376 | return 1; | |
377 | ||
378 | USB_PRINTF("unknown Description Type : %x\n", | |
379 | head->bDescriptorType); | |
380 | ||
381 | { | |
382 | ch = (unsigned char *)head; | |
383 | for (i = 0; i < head->bLength; i++) | |
384 | USB_PRINTF("%02X ", *ch++); | |
385 | USB_PRINTF("\n\n\n"); | |
386 | } | |
387 | break; | |
affae2bf | 388 | } |
7455af41 BS |
389 | index += head->bLength; |
390 | head = (struct usb_descriptor_header *)&buffer[index]; | |
affae2bf WD |
391 | } |
392 | return 1; | |
393 | } | |
394 | ||
395 | /*********************************************************************** | |
396 | * Clears an endpoint | |
397 | * endp: endpoint number in bits 0-3; | |
398 | * direction flag in bit 7 (1 = IN, 0 = OUT) | |
399 | */ | |
400 | int usb_clear_halt(struct usb_device *dev, int pipe) | |
401 | { | |
402 | int result; | |
9c998aa8 | 403 | int endp = usb_pipeendpoint(pipe)|(usb_pipein(pipe)<<7); |
affae2bf WD |
404 | |
405 | result = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
406 | USB_REQ_CLEAR_FEATURE, USB_RECIP_ENDPOINT, 0, |
407 | endp, NULL, 0, USB_CNTL_TIMEOUT * 3); | |
affae2bf WD |
408 | |
409 | /* don't clear if failed */ | |
410 | if (result < 0) | |
411 | return result; | |
9c998aa8 | 412 | |
095b8a37 | 413 | /* |
9c998aa8 WD |
414 | * NOTE: we do not get status and verify reset was successful |
415 | * as some devices are reported to lock up upon this check.. | |
416 | */ | |
417 | ||
affae2bf | 418 | usb_endpoint_running(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe)); |
9c998aa8 | 419 | |
affae2bf WD |
420 | /* toggle is reset on clear */ |
421 | usb_settoggle(dev, usb_pipeendpoint(pipe), usb_pipeout(pipe), 0); | |
422 | return 0; | |
423 | } | |
424 | ||
425 | ||
426 | /********************************************************************** | |
427 | * get_descriptor type | |
428 | */ | |
6f5794a6 RB |
429 | int usb_get_descriptor(struct usb_device *dev, unsigned char type, |
430 | unsigned char index, void *buf, int size) | |
affae2bf WD |
431 | { |
432 | int res; | |
53677ef1 | 433 | res = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), |
affae2bf WD |
434 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, |
435 | (type << 8) + index, 0, | |
436 | buf, size, USB_CNTL_TIMEOUT); | |
437 | return res; | |
438 | } | |
439 | ||
440 | /********************************************************************** | |
441 | * gets configuration cfgno and store it in the buffer | |
442 | */ | |
6f5794a6 RB |
443 | int usb_get_configuration_no(struct usb_device *dev, |
444 | unsigned char *buffer, int cfgno) | |
affae2bf | 445 | { |
53677ef1 | 446 | int result; |
affae2bf | 447 | unsigned int tmp; |
8f8bd565 | 448 | struct usb_configuration_descriptor *config; |
affae2bf | 449 | |
8f8bd565 | 450 | config = (struct usb_configuration_descriptor *)&buffer[0]; |
48867208 RB |
451 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, 9); |
452 | if (result < 9) { | |
affae2bf | 453 | if (result < 0) |
6f5794a6 RB |
454 | printf("unable to get descriptor, error %lX\n", |
455 | dev->status); | |
affae2bf | 456 | else |
6f5794a6 | 457 | printf("config descriptor too short " \ |
48867208 | 458 | "(expected %i, got %i)\n", 9, result); |
affae2bf WD |
459 | return -1; |
460 | } | |
c918261c | 461 | tmp = le16_to_cpu(config->wTotalLength); |
affae2bf | 462 | |
cd0a9de6 | 463 | if (tmp > USB_BUFSIZ) { |
6f5794a6 RB |
464 | USB_PRINTF("usb_get_configuration_no: failed to get " \ |
465 | "descriptor - too long: %d\n", tmp); | |
cd0a9de6 WD |
466 | return -1; |
467 | } | |
468 | ||
affae2bf | 469 | result = usb_get_descriptor(dev, USB_DT_CONFIG, cfgno, buffer, tmp); |
6f5794a6 RB |
470 | USB_PRINTF("get_conf_no %d Result %d, wLength %d\n", |
471 | cfgno, result, tmp); | |
affae2bf WD |
472 | return result; |
473 | } | |
474 | ||
475 | /******************************************************************** | |
476 | * set address of a device to the value in dev->devnum. | |
477 | * This can only be done by addressing the device via the default address (0) | |
478 | */ | |
479 | int usb_set_address(struct usb_device *dev) | |
480 | { | |
481 | int res; | |
482 | ||
6f5794a6 RB |
483 | USB_PRINTF("set address %d\n", dev->devnum); |
484 | res = usb_control_msg(dev, usb_snddefctrl(dev), | |
485 | USB_REQ_SET_ADDRESS, 0, | |
486 | (dev->devnum), 0, | |
487 | NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
488 | return res; |
489 | } | |
490 | ||
491 | /******************************************************************** | |
492 | * set interface number to interface | |
493 | */ | |
494 | int usb_set_interface(struct usb_device *dev, int interface, int alternate) | |
495 | { | |
8f8bd565 | 496 | struct usb_interface *if_face = NULL; |
affae2bf WD |
497 | int ret, i; |
498 | ||
8f8bd565 TR |
499 | for (i = 0; i < dev->config.desc.bNumInterfaces; i++) { |
500 | if (dev->config.if_desc[i].desc.bInterfaceNumber == interface) { | |
affae2bf WD |
501 | if_face = &dev->config.if_desc[i]; |
502 | break; | |
503 | } | |
504 | } | |
505 | if (!if_face) { | |
506 | printf("selecting invalid interface %d", interface); | |
507 | return -1; | |
508 | } | |
7455af41 BS |
509 | /* |
510 | * We should return now for devices with only one alternate setting. | |
6f5794a6 RB |
511 | * According to 9.4.10 of the Universal Serial Bus Specification |
512 | * Revision 2.0 such devices can return with a STALL. This results in | |
513 | * some USB sticks timeouting during initialization and then being | |
514 | * unusable in U-Boot. | |
7455af41 BS |
515 | */ |
516 | if (if_face->num_altsetting == 1) | |
517 | return 0; | |
affae2bf | 518 | |
6f5794a6 RB |
519 | ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
520 | USB_REQ_SET_INTERFACE, USB_RECIP_INTERFACE, | |
521 | alternate, interface, NULL, 0, | |
522 | USB_CNTL_TIMEOUT * 5); | |
523 | if (ret < 0) | |
affae2bf WD |
524 | return ret; |
525 | ||
affae2bf WD |
526 | return 0; |
527 | } | |
528 | ||
529 | /******************************************************************** | |
530 | * set configuration number to configuration | |
531 | */ | |
532 | int usb_set_configuration(struct usb_device *dev, int configuration) | |
533 | { | |
534 | int res; | |
6f5794a6 | 535 | USB_PRINTF("set configuration %d\n", configuration); |
affae2bf | 536 | /* set setup command */ |
6f5794a6 RB |
537 | res = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), |
538 | USB_REQ_SET_CONFIGURATION, 0, | |
539 | configuration, 0, | |
540 | NULL, 0, USB_CNTL_TIMEOUT); | |
541 | if (res == 0) { | |
affae2bf WD |
542 | dev->toggle[0] = 0; |
543 | dev->toggle[1] = 0; | |
544 | return 0; | |
6f5794a6 | 545 | } else |
affae2bf WD |
546 | return -1; |
547 | } | |
548 | ||
549 | /******************************************************************** | |
550 | * set protocol to protocol | |
551 | */ | |
552 | int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol) | |
553 | { | |
554 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
555 | USB_REQ_SET_PROTOCOL, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
556 | protocol, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
557 | } | |
558 | ||
559 | /******************************************************************** | |
560 | * set idle | |
561 | */ | |
562 | int usb_set_idle(struct usb_device *dev, int ifnum, int duration, int report_id) | |
563 | { | |
564 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
565 | USB_REQ_SET_IDLE, USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
566 | (duration << 8) | report_id, ifnum, NULL, 0, USB_CNTL_TIMEOUT); | |
567 | } | |
568 | ||
569 | /******************************************************************** | |
570 | * get report | |
571 | */ | |
6f5794a6 RB |
572 | int usb_get_report(struct usb_device *dev, int ifnum, unsigned char type, |
573 | unsigned char id, void *buf, int size) | |
affae2bf WD |
574 | { |
575 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
6f5794a6 RB |
576 | USB_REQ_GET_REPORT, |
577 | USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE, | |
578 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
affae2bf WD |
579 | } |
580 | ||
581 | /******************************************************************** | |
582 | * get class descriptor | |
583 | */ | |
584 | int usb_get_class_descriptor(struct usb_device *dev, int ifnum, | |
585 | unsigned char type, unsigned char id, void *buf, int size) | |
586 | { | |
587 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
588 | USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN, | |
589 | (type << 8) + id, ifnum, buf, size, USB_CNTL_TIMEOUT); | |
590 | } | |
591 | ||
592 | /******************************************************************** | |
593 | * get string index in buffer | |
594 | */ | |
6f5794a6 RB |
595 | int usb_get_string(struct usb_device *dev, unsigned short langid, |
596 | unsigned char index, void *buf, int size) | |
affae2bf | 597 | { |
9c998aa8 WD |
598 | int i; |
599 | int result; | |
600 | ||
601 | for (i = 0; i < 3; ++i) { | |
602 | /* some devices are flaky */ | |
603 | result = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
604 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, | |
095b8a37 | 605 | (USB_DT_STRING << 8) + index, langid, buf, size, |
9c998aa8 WD |
606 | USB_CNTL_TIMEOUT); |
607 | ||
608 | if (result > 0) | |
609 | break; | |
095b8a37 WD |
610 | } |
611 | ||
9c998aa8 WD |
612 | return result; |
613 | } | |
614 | ||
615 | ||
616 | static void usb_try_string_workarounds(unsigned char *buf, int *length) | |
617 | { | |
618 | int newlength, oldlength = *length; | |
619 | ||
620 | for (newlength = 2; newlength + 1 < oldlength; newlength += 2) | |
621 | if (!isprint(buf[newlength]) || buf[newlength + 1]) | |
622 | break; | |
623 | ||
624 | if (newlength > 2) { | |
625 | buf[0] = newlength; | |
626 | *length = newlength; | |
627 | } | |
affae2bf WD |
628 | } |
629 | ||
9c998aa8 WD |
630 | |
631 | static int usb_string_sub(struct usb_device *dev, unsigned int langid, | |
632 | unsigned int index, unsigned char *buf) | |
633 | { | |
634 | int rc; | |
635 | ||
636 | /* Try to read the string descriptor by asking for the maximum | |
637 | * possible number of bytes */ | |
638 | rc = usb_get_string(dev, langid, index, buf, 255); | |
639 | ||
640 | /* If that failed try to read the descriptor length, then | |
641 | * ask for just that many bytes */ | |
642 | if (rc < 2) { | |
643 | rc = usb_get_string(dev, langid, index, buf, 2); | |
644 | if (rc == 2) | |
645 | rc = usb_get_string(dev, langid, index, buf, buf[0]); | |
646 | } | |
647 | ||
648 | if (rc >= 2) { | |
649 | if (!buf[0] && !buf[1]) | |
650 | usb_try_string_workarounds(buf, &rc); | |
651 | ||
652 | /* There might be extra junk at the end of the descriptor */ | |
653 | if (buf[0] < rc) | |
654 | rc = buf[0]; | |
655 | ||
656 | rc = rc - (rc & 1); /* force a multiple of two */ | |
657 | } | |
658 | ||
659 | if (rc < 2) | |
095b8a37 | 660 | rc = -1; |
9c998aa8 WD |
661 | |
662 | return rc; | |
663 | } | |
664 | ||
665 | ||
affae2bf WD |
666 | /******************************************************************** |
667 | * usb_string: | |
668 | * Get string index and translate it to ascii. | |
669 | * returns string length (> 0) or error (< 0) | |
670 | */ | |
671 | int usb_string(struct usb_device *dev, int index, char *buf, size_t size) | |
672 | { | |
cd0a9de6 | 673 | unsigned char mybuf[USB_BUFSIZ]; |
affae2bf WD |
674 | unsigned char *tbuf; |
675 | int err; | |
676 | unsigned int u, idx; | |
677 | ||
678 | if (size <= 0 || !buf || !index) | |
679 | return -1; | |
680 | buf[0] = 0; | |
d0ff51ba | 681 | tbuf = &mybuf[0]; |
affae2bf WD |
682 | |
683 | /* get langid for strings if it's not yet known */ | |
684 | if (!dev->have_langid) { | |
9c998aa8 | 685 | err = usb_string_sub(dev, 0, 0, tbuf); |
affae2bf | 686 | if (err < 0) { |
6f5794a6 | 687 | USB_PRINTF("error getting string descriptor 0 " \ |
f1c1f540 | 688 | "(error=%lx)\n", dev->status); |
affae2bf WD |
689 | return -1; |
690 | } else if (tbuf[0] < 4) { | |
691 | USB_PRINTF("string descriptor 0 too short\n"); | |
692 | return -1; | |
693 | } else { | |
694 | dev->have_langid = -1; | |
6f5794a6 | 695 | dev->string_langid = tbuf[2] | (tbuf[3] << 8); |
affae2bf | 696 | /* always use the first langid listed */ |
6f5794a6 RB |
697 | USB_PRINTF("USB device number %d default " \ |
698 | "language ID 0x%x\n", | |
699 | dev->devnum, dev->string_langid); | |
affae2bf WD |
700 | } |
701 | } | |
cd0a9de6 | 702 | |
9c998aa8 | 703 | err = usb_string_sub(dev, dev->string_langid, index, tbuf); |
affae2bf WD |
704 | if (err < 0) |
705 | return err; | |
9c998aa8 | 706 | |
affae2bf WD |
707 | size--; /* leave room for trailing NULL char in output buffer */ |
708 | for (idx = 0, u = 2; u < err; u += 2) { | |
709 | if (idx >= size) | |
710 | break; | |
711 | if (tbuf[u+1]) /* high byte */ | |
712 | buf[idx++] = '?'; /* non-ASCII character */ | |
713 | else | |
714 | buf[idx++] = tbuf[u]; | |
715 | } | |
716 | buf[idx] = 0; | |
717 | err = idx; | |
718 | return err; | |
719 | } | |
720 | ||
721 | ||
722 | /******************************************************************** | |
723 | * USB device handling: | |
724 | * the USB device are static allocated [USB_MAX_DEVICE]. | |
725 | */ | |
726 | ||
727 | ||
728 | /* returns a pointer to the device with the index [index]. | |
729 | * if the device is not assigned (dev->devnum==-1) returns NULL | |
730 | */ | |
6f5794a6 | 731 | struct usb_device *usb_get_dev_index(int index) |
affae2bf | 732 | { |
6f5794a6 | 733 | if (usb_dev[index].devnum == -1) |
affae2bf WD |
734 | return NULL; |
735 | else | |
736 | return &usb_dev[index]; | |
737 | } | |
738 | ||
739 | ||
740 | /* returns a pointer of a new device structure or NULL, if | |
741 | * no device struct is available | |
742 | */ | |
6f5794a6 | 743 | struct usb_device *usb_alloc_new_device(void) |
affae2bf WD |
744 | { |
745 | int i; | |
6f5794a6 RB |
746 | USB_PRINTF("New Device %d\n", dev_index); |
747 | if (dev_index == USB_MAX_DEVICE) { | |
748 | printf("ERROR, too many USB Devices, max=%d\n", USB_MAX_DEVICE); | |
affae2bf WD |
749 | return NULL; |
750 | } | |
6f5794a6 RB |
751 | /* default Address is 0, real addresses start with 1 */ |
752 | usb_dev[dev_index].devnum = dev_index + 1; | |
753 | usb_dev[dev_index].maxchild = 0; | |
754 | for (i = 0; i < USB_MAXCHILDREN; i++) | |
755 | usb_dev[dev_index].children[i] = NULL; | |
756 | usb_dev[dev_index].parent = NULL; | |
affae2bf | 757 | dev_index++; |
6f5794a6 | 758 | return &usb_dev[dev_index - 1]; |
affae2bf WD |
759 | } |
760 | ||
761 | ||
762 | /* | |
763 | * By the time we get here, the device has gotten a new device ID | |
764 | * and is in the default state. We need to identify the thing and | |
765 | * get the ball rolling.. | |
766 | * | |
767 | * Returns 0 for success, != 0 for error. | |
768 | */ | |
769 | int usb_new_device(struct usb_device *dev) | |
770 | { | |
771 | int addr, err; | |
772 | int tmp; | |
cd0a9de6 | 773 | unsigned char tmpbuf[USB_BUFSIZ]; |
affae2bf | 774 | |
affae2bf WD |
775 | /* We still haven't set the Address yet */ |
776 | addr = dev->devnum; | |
777 | dev->devnum = 0; | |
9c998aa8 | 778 | |
c9e8436b RB |
779 | #ifdef CONFIG_LEGACY_USB_INIT_SEQ |
780 | /* this is the old and known way of initializing devices, it is | |
781 | * different than what Windows and Linux are doing. Windows and Linux | |
782 | * both retrieve 64 bytes while reading the device descriptor | |
783 | * Several USB stick devices report ERR: CTL_TIMEOUT, caused by an | |
784 | * invalid header while reading 8 bytes as device descriptor. */ | |
785 | dev->descriptor.bMaxPacketSize0 = 8; /* Start off at 8 bytes */ | |
48867208 | 786 | dev->maxpacketsize = PACKET_SIZE_8; |
de39f8c1 | 787 | dev->epmaxpacketin[0] = 8; |
c9e8436b RB |
788 | dev->epmaxpacketout[0] = 8; |
789 | ||
790 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, &dev->descriptor, 8); | |
791 | if (err < 8) { | |
792 | printf("\n USB device not responding, " \ | |
de39f8c1 | 793 | "giving up (status=%lX)\n", dev->status); |
c9e8436b RB |
794 | return 1; |
795 | } | |
796 | #else | |
48867208 RB |
797 | /* This is a Windows scheme of initialization sequence, with double |
798 | * reset of the device (Linux uses the same sequence) | |
c9e8436b RB |
799 | * Some equipment is said to work only with such init sequence; this |
800 | * patch is based on the work by Alan Stern: | |
de39f8c1 MT |
801 | * http://sourceforge.net/mailarchive/forum.php? |
802 | * thread_id=5729457&forum_id=5398 | |
9c998aa8 | 803 | */ |
9c998aa8 WD |
804 | struct usb_device_descriptor *desc; |
805 | int port = -1; | |
806 | struct usb_device *parent = dev->parent; | |
807 | unsigned short portstatus; | |
808 | ||
809 | /* send 64-byte GET-DEVICE-DESCRIPTOR request. Since the descriptor is | |
810 | * only 18 bytes long, this will terminate with a short packet. But if | |
811 | * the maxpacket size is 8 or 16 the device may be waiting to transmit | |
c9e8436b | 812 | * some more, or keeps on retransmitting the 8 byte header. */ |
9c998aa8 WD |
813 | |
814 | desc = (struct usb_device_descriptor *)tmpbuf; | |
c9e8436b | 815 | dev->descriptor.bMaxPacketSize0 = 64; /* Start off at 64 bytes */ |
48867208 RB |
816 | /* Default to 64 byte max packet size */ |
817 | dev->maxpacketsize = PACKET_SIZE_64; | |
de39f8c1 | 818 | dev->epmaxpacketin[0] = 64; |
c9e8436b | 819 | dev->epmaxpacketout[0] = 64; |
48867208 RB |
820 | |
821 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, 64); | |
822 | if (err < 0) { | |
823 | USB_PRINTF("usb_new_device: usb_get_descriptor() failed\n"); | |
824 | return 1; | |
9c998aa8 | 825 | } |
48867208 | 826 | |
9c998aa8 | 827 | dev->descriptor.bMaxPacketSize0 = desc->bMaxPacketSize0; |
095b8a37 | 828 | |
9c998aa8 WD |
829 | /* find the port number we're at */ |
830 | if (parent) { | |
48867208 | 831 | int j; |
095b8a37 | 832 | |
9c998aa8 WD |
833 | for (j = 0; j < parent->maxchild; j++) { |
834 | if (parent->children[j] == dev) { | |
835 | port = j; | |
836 | break; | |
837 | } | |
838 | } | |
839 | if (port < 0) { | |
6f5794a6 | 840 | printf("usb_new_device:cannot locate device's port.\n"); |
9c998aa8 WD |
841 | return 1; |
842 | } | |
843 | ||
844 | /* reset the port for the second time */ | |
845 | err = hub_port_reset(dev->parent, port, &portstatus); | |
846 | if (err < 0) { | |
847 | printf("\n Couldn't reset port %i\n", port); | |
848 | return 1; | |
849 | } | |
850 | } | |
9c998aa8 WD |
851 | #endif |
852 | ||
de39f8c1 | 853 | dev->epmaxpacketin[0] = dev->descriptor.bMaxPacketSize0; |
affae2bf WD |
854 | dev->epmaxpacketout[0] = dev->descriptor.bMaxPacketSize0; |
855 | switch (dev->descriptor.bMaxPacketSize0) { | |
de39f8c1 MT |
856 | case 8: |
857 | dev->maxpacketsize = PACKET_SIZE_8; | |
858 | break; | |
859 | case 16: | |
860 | dev->maxpacketsize = PACKET_SIZE_16; | |
861 | break; | |
862 | case 32: | |
863 | dev->maxpacketsize = PACKET_SIZE_32; | |
864 | break; | |
865 | case 64: | |
866 | dev->maxpacketsize = PACKET_SIZE_64; | |
867 | break; | |
affae2bf WD |
868 | } |
869 | dev->devnum = addr; | |
870 | ||
871 | err = usb_set_address(dev); /* set address */ | |
872 | ||
873 | if (err < 0) { | |
6f5794a6 RB |
874 | printf("\n USB device not accepting new address " \ |
875 | "(error=%lX)\n", dev->status); | |
affae2bf WD |
876 | return 1; |
877 | } | |
878 | ||
879 | wait_ms(10); /* Let the SET_ADDRESS settle */ | |
880 | ||
881 | tmp = sizeof(dev->descriptor); | |
882 | ||
6f5794a6 RB |
883 | err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, |
884 | &dev->descriptor, sizeof(dev->descriptor)); | |
affae2bf WD |
885 | if (err < tmp) { |
886 | if (err < 0) | |
6f5794a6 RB |
887 | printf("unable to get device descriptor (error=%d)\n", |
888 | err); | |
affae2bf | 889 | else |
6f5794a6 RB |
890 | printf("USB device descriptor short read " \ |
891 | "(expected %i, got %i)\n", tmp, err); | |
affae2bf WD |
892 | return 1; |
893 | } | |
894 | /* correct le values */ | |
c918261c CE |
895 | le16_to_cpus(&dev->descriptor.bcdUSB); |
896 | le16_to_cpus(&dev->descriptor.idVendor); | |
897 | le16_to_cpus(&dev->descriptor.idProduct); | |
898 | le16_to_cpus(&dev->descriptor.bcdDevice); | |
affae2bf | 899 | /* only support for one config for now */ |
6f5794a6 RB |
900 | usb_get_configuration_no(dev, &tmpbuf[0], 0); |
901 | usb_parse_config(dev, &tmpbuf[0], 0); | |
affae2bf WD |
902 | usb_set_maxpacket(dev); |
903 | /* we set the default configuration here */ | |
8f8bd565 | 904 | if (usb_set_configuration(dev, dev->config.desc.bConfigurationValue)) { |
6f5794a6 RB |
905 | printf("failed to set default configuration " \ |
906 | "len %d, status %lX\n", dev->act_len, dev->status); | |
affae2bf WD |
907 | return -1; |
908 | } | |
909 | USB_PRINTF("new device strings: Mfr=%d, Product=%d, SerialNumber=%d\n", | |
6f5794a6 RB |
910 | dev->descriptor.iManufacturer, dev->descriptor.iProduct, |
911 | dev->descriptor.iSerialNumber); | |
affae2bf WD |
912 | memset(dev->mf, 0, sizeof(dev->mf)); |
913 | memset(dev->prod, 0, sizeof(dev->prod)); | |
914 | memset(dev->serial, 0, sizeof(dev->serial)); | |
915 | if (dev->descriptor.iManufacturer) | |
6f5794a6 RB |
916 | usb_string(dev, dev->descriptor.iManufacturer, |
917 | dev->mf, sizeof(dev->mf)); | |
affae2bf | 918 | if (dev->descriptor.iProduct) |
6f5794a6 RB |
919 | usb_string(dev, dev->descriptor.iProduct, |
920 | dev->prod, sizeof(dev->prod)); | |
affae2bf | 921 | if (dev->descriptor.iSerialNumber) |
6f5794a6 RB |
922 | usb_string(dev, dev->descriptor.iSerialNumber, |
923 | dev->serial, sizeof(dev->serial)); | |
affae2bf WD |
924 | USB_PRINTF("Manufacturer %s\n", dev->mf); |
925 | USB_PRINTF("Product %s\n", dev->prod); | |
926 | USB_PRINTF("SerialNumber %s\n", dev->serial); | |
927 | /* now prode if the device is a hub */ | |
6f5794a6 | 928 | usb_hub_probe(dev, 0); |
affae2bf WD |
929 | return 0; |
930 | } | |
931 | ||
932 | /* build device Tree */ | |
933 | void usb_scan_devices(void) | |
934 | { | |
935 | int i; | |
936 | struct usb_device *dev; | |
937 | ||
938 | /* first make all devices unknown */ | |
6f5794a6 RB |
939 | for (i = 0; i < USB_MAX_DEVICE; i++) { |
940 | memset(&usb_dev[i], 0, sizeof(struct usb_device)); | |
d0ff51ba | 941 | usb_dev[i].devnum = -1; |
affae2bf | 942 | } |
6f5794a6 | 943 | dev_index = 0; |
affae2bf | 944 | /* device 0 is always present (root hub, so let it analyze) */ |
6f5794a6 | 945 | dev = usb_alloc_new_device(); |
1a448db7 BW |
946 | if (usb_new_device(dev)) |
947 | printf("No USB Device found\n"); | |
948 | else | |
949 | printf("%d USB Device(s) found\n", dev_index); | |
affae2bf WD |
950 | /* insert "driver" if possible */ |
951 | #ifdef CONFIG_USB_KEYBOARD | |
952 | drv_usb_kbd_init(); | |
953 | USB_PRINTF("scan end\n"); | |
954 | #endif | |
955 | } | |
956 | ||
957 | ||
958 | /**************************************************************************** | |
959 | * HUB "Driver" | |
960 | * Probes device for being a hub and configurate it | |
961 | */ | |
962 | ||
963 | #undef USB_HUB_DEBUG | |
964 | ||
965 | #ifdef USB_HUB_DEBUG | |
de39f8c1 | 966 | #define USB_HUB_PRINTF(fmt, args...) printf(fmt , ##args) |
affae2bf | 967 | #else |
6f5794a6 | 968 | #define USB_HUB_PRINTF(fmt, args...) |
affae2bf WD |
969 | #endif |
970 | ||
971 | ||
972 | static struct usb_hub_device hub_dev[USB_MAX_HUB]; | |
973 | static int usb_hub_index; | |
974 | ||
975 | ||
976 | int usb_get_hub_descriptor(struct usb_device *dev, void *data, int size) | |
977 | { | |
978 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
979 | USB_REQ_GET_DESCRIPTOR, USB_DIR_IN | USB_RT_HUB, | |
980 | USB_DT_HUB << 8, 0, data, size, USB_CNTL_TIMEOUT); | |
981 | } | |
982 | ||
983 | int usb_clear_hub_feature(struct usb_device *dev, int feature) | |
984 | { | |
985 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
986 | USB_REQ_CLEAR_FEATURE, USB_RT_HUB, feature, |
987 | 0, NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
988 | } |
989 | ||
990 | int usb_clear_port_feature(struct usb_device *dev, int port, int feature) | |
991 | { | |
992 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
993 | USB_REQ_CLEAR_FEATURE, USB_RT_PORT, feature, |
994 | port, NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
995 | } |
996 | ||
997 | int usb_set_port_feature(struct usb_device *dev, int port, int feature) | |
998 | { | |
999 | return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), | |
6f5794a6 RB |
1000 | USB_REQ_SET_FEATURE, USB_RT_PORT, feature, |
1001 | port, NULL, 0, USB_CNTL_TIMEOUT); | |
affae2bf WD |
1002 | } |
1003 | ||
1004 | int usb_get_hub_status(struct usb_device *dev, void *data) | |
1005 | { | |
1006 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
1007 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_HUB, 0, 0, | |
1008 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
1009 | } | |
1010 | ||
1011 | int usb_get_port_status(struct usb_device *dev, int port, void *data) | |
1012 | { | |
1013 | return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), | |
1014 | USB_REQ_GET_STATUS, USB_DIR_IN | USB_RT_PORT, 0, port, | |
1015 | data, sizeof(struct usb_hub_status), USB_CNTL_TIMEOUT); | |
1016 | } | |
1017 | ||
1018 | ||
1019 | static void usb_hub_power_on(struct usb_hub_device *hub) | |
1020 | { | |
1021 | int i; | |
1022 | struct usb_device *dev; | |
1023 | ||
6f5794a6 | 1024 | dev = hub->pusb_dev; |
affae2bf WD |
1025 | /* Enable power to the ports */ |
1026 | USB_HUB_PRINTF("enabling power on all ports\n"); | |
1027 | for (i = 0; i < dev->maxchild; i++) { | |
1028 | usb_set_port_feature(dev, i + 1, USB_PORT_FEAT_POWER); | |
6f5794a6 | 1029 | USB_HUB_PRINTF("port %d returns %lX\n", i + 1, dev->status); |
affae2bf WD |
1030 | wait_ms(hub->desc.bPwrOn2PwrGood * 2); |
1031 | } | |
1032 | } | |
1033 | ||
1034 | void usb_hub_reset(void) | |
1035 | { | |
6f5794a6 | 1036 | usb_hub_index = 0; |
affae2bf WD |
1037 | } |
1038 | ||
1039 | struct usb_hub_device *usb_hub_allocate(void) | |
1040 | { | |
6f5794a6 | 1041 | if (usb_hub_index < USB_MAX_HUB) |
affae2bf | 1042 | return &hub_dev[usb_hub_index++]; |
6f5794a6 RB |
1043 | |
1044 | printf("ERROR: USB_MAX_HUB (%d) reached\n", USB_MAX_HUB); | |
affae2bf WD |
1045 | return NULL; |
1046 | } | |
1047 | ||
1048 | #define MAX_TRIES 5 | |
1049 | ||
f1c1f540 SR |
1050 | static inline char *portspeed(int portstatus) |
1051 | { | |
1052 | if (portstatus & (1 << USB_PORT_FEAT_HIGHSPEED)) | |
1053 | return "480 Mb/s"; | |
1054 | else if (portstatus & (1 << USB_PORT_FEAT_LOWSPEED)) | |
1055 | return "1.5 Mb/s"; | |
1056 | else | |
1057 | return "12 Mb/s"; | |
1058 | } | |
1059 | ||
9c998aa8 WD |
1060 | static int hub_port_reset(struct usb_device *dev, int port, |
1061 | unsigned short *portstat) | |
affae2bf | 1062 | { |
9c998aa8 | 1063 | int tries; |
affae2bf WD |
1064 | struct usb_port_status portsts; |
1065 | unsigned short portstatus, portchange; | |
affae2bf | 1066 | |
9c998aa8 | 1067 | USB_HUB_PRINTF("hub_port_reset: resetting port %d...\n", port); |
6f5794a6 | 1068 | for (tries = 0; tries < MAX_TRIES; tries++) { |
affae2bf WD |
1069 | |
1070 | usb_set_port_feature(dev, port + 1, USB_PORT_FEAT_RESET); | |
1071 | wait_ms(200); | |
1072 | ||
6f5794a6 RB |
1073 | if (usb_get_port_status(dev, port + 1, &portsts) < 0) { |
1074 | USB_HUB_PRINTF("get_port_status failed status %lX\n", | |
1075 | dev->status); | |
9c998aa8 | 1076 | return -1; |
affae2bf | 1077 | } |
c918261c CE |
1078 | portstatus = le16_to_cpu(portsts.wPortStatus); |
1079 | portchange = le16_to_cpu(portsts.wPortChange); | |
366523c2 | 1080 | |
6f5794a6 RB |
1081 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", |
1082 | portstatus, portchange, | |
f1c1f540 | 1083 | portspeed(portstatus)); |
366523c2 | 1084 | |
6f5794a6 RB |
1085 | USB_HUB_PRINTF("STAT_C_CONNECTION = %d STAT_CONNECTION = %d" \ |
1086 | " USB_PORT_STAT_ENABLE %d\n", | |
affae2bf WD |
1087 | (portchange & USB_PORT_STAT_C_CONNECTION) ? 1 : 0, |
1088 | (portstatus & USB_PORT_STAT_CONNECTION) ? 1 : 0, | |
1089 | (portstatus & USB_PORT_STAT_ENABLE) ? 1 : 0); | |
6f5794a6 | 1090 | |
affae2bf WD |
1091 | if ((portchange & USB_PORT_STAT_C_CONNECTION) || |
1092 | !(portstatus & USB_PORT_STAT_CONNECTION)) | |
9c998aa8 | 1093 | return -1; |
affae2bf | 1094 | |
6f5794a6 | 1095 | if (portstatus & USB_PORT_STAT_ENABLE) |
affae2bf WD |
1096 | break; |
1097 | ||
1098 | wait_ms(200); | |
1099 | } | |
1100 | ||
6f5794a6 RB |
1101 | if (tries == MAX_TRIES) { |
1102 | USB_HUB_PRINTF("Cannot enable port %i after %i retries, " \ | |
1103 | "disabling port.\n", port + 1, MAX_TRIES); | |
affae2bf | 1104 | USB_HUB_PRINTF("Maybe the USB cable is bad?\n"); |
9c998aa8 | 1105 | return -1; |
affae2bf WD |
1106 | } |
1107 | ||
1108 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_RESET); | |
9c998aa8 WD |
1109 | *portstat = portstatus; |
1110 | return 0; | |
9c998aa8 WD |
1111 | } |
1112 | ||
1113 | ||
1114 | void usb_hub_port_connect_change(struct usb_device *dev, int port) | |
1115 | { | |
1116 | struct usb_device *usb; | |
1117 | struct usb_port_status portsts; | |
1118 | unsigned short portstatus, portchange; | |
1119 | ||
1120 | /* Check status */ | |
6f5794a6 | 1121 | if (usb_get_port_status(dev, port + 1, &portsts) < 0) { |
9c998aa8 WD |
1122 | USB_HUB_PRINTF("get_port_status failed\n"); |
1123 | return; | |
1124 | } | |
1125 | ||
c918261c CE |
1126 | portstatus = le16_to_cpu(portsts.wPortStatus); |
1127 | portchange = le16_to_cpu(portsts.wPortChange); | |
6f5794a6 | 1128 | USB_HUB_PRINTF("portstatus %x, change %x, %s\n", |
f1c1f540 | 1129 | portstatus, portchange, portspeed(portstatus)); |
9c998aa8 WD |
1130 | |
1131 | /* Clear the connection change status */ | |
1132 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_C_CONNECTION); | |
1133 | ||
1134 | /* Disconnect any existing devices under this port */ | |
1135 | if (((!(portstatus & USB_PORT_STAT_CONNECTION)) && | |
6f5794a6 | 1136 | (!(portstatus & USB_PORT_STAT_ENABLE))) || (dev->children[port])) { |
9c998aa8 WD |
1137 | USB_HUB_PRINTF("usb_disconnect(&hub->children[port]);\n"); |
1138 | /* Return now if nothing is connected */ | |
1139 | if (!(portstatus & USB_PORT_STAT_CONNECTION)) | |
1140 | return; | |
1141 | } | |
1142 | wait_ms(200); | |
1143 | ||
1144 | /* Reset the port */ | |
1145 | if (hub_port_reset(dev, port, &portstatus) < 0) { | |
1146 | printf("cannot reset port %i!?\n", port + 1); | |
1147 | return; | |
1148 | } | |
1149 | ||
affae2bf WD |
1150 | wait_ms(200); |
1151 | ||
1152 | /* Allocate a new device struct for it */ | |
6f5794a6 | 1153 | usb = usb_alloc_new_device(); |
366523c2 MT |
1154 | |
1155 | if (portstatus & USB_PORT_STAT_HIGH_SPEED) | |
1156 | usb->speed = USB_SPEED_HIGH; | |
1157 | else if (portstatus & USB_PORT_STAT_LOW_SPEED) | |
1158 | usb->speed = USB_SPEED_LOW; | |
1159 | else | |
1160 | usb->speed = USB_SPEED_FULL; | |
affae2bf WD |
1161 | |
1162 | dev->children[port] = usb; | |
6f5794a6 | 1163 | usb->parent = dev; |
affae2bf WD |
1164 | /* Run it through the hoops (find a driver, etc) */ |
1165 | if (usb_new_device(usb)) { | |
1166 | /* Woops, disable the port */ | |
1167 | USB_HUB_PRINTF("hub: disabling port %d\n", port + 1); | |
1168 | usb_clear_port_feature(dev, port + 1, USB_PORT_FEAT_ENABLE); | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | ||
1173 | int usb_hub_configure(struct usb_device *dev) | |
1174 | { | |
cd0a9de6 | 1175 | unsigned char buffer[USB_BUFSIZ], *bitmap; |
affae2bf WD |
1176 | struct usb_hub_descriptor *descriptor; |
1177 | struct usb_hub_status *hubsts; | |
1178 | int i; | |
1179 | struct usb_hub_device *hub; | |
1180 | ||
1181 | /* "allocate" Hub device */ | |
6f5794a6 RB |
1182 | hub = usb_hub_allocate(); |
1183 | if (hub == NULL) | |
affae2bf | 1184 | return -1; |
6f5794a6 | 1185 | hub->pusb_dev = dev; |
affae2bf WD |
1186 | /* Get the the hub descriptor */ |
1187 | if (usb_get_hub_descriptor(dev, buffer, 4) < 0) { | |
6f5794a6 RB |
1188 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ |
1189 | "descriptor, giving up %lX\n", dev->status); | |
affae2bf WD |
1190 | return -1; |
1191 | } | |
1192 | descriptor = (struct usb_hub_descriptor *)buffer; | |
cd0a9de6 | 1193 | |
e86e5a07 WD |
1194 | /* silence compiler warning if USB_BUFSIZ is > 256 [= sizeof(char)] */ |
1195 | i = descriptor->bLength; | |
1196 | if (i > USB_BUFSIZ) { | |
6f5794a6 RB |
1197 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ |
1198 | "descriptor - too long: %d\n", | |
1199 | descriptor->bLength); | |
cd0a9de6 WD |
1200 | return -1; |
1201 | } | |
1202 | ||
affae2bf | 1203 | if (usb_get_hub_descriptor(dev, buffer, descriptor->bLength) < 0) { |
6f5794a6 RB |
1204 | USB_HUB_PRINTF("usb_hub_configure: failed to get hub " \ |
1205 | "descriptor 2nd giving up %lX\n", dev->status); | |
affae2bf WD |
1206 | return -1; |
1207 | } | |
6f5794a6 | 1208 | memcpy((unsigned char *)&hub->desc, buffer, descriptor->bLength); |
affae2bf | 1209 | /* adjust 16bit values */ |
6f5794a6 RB |
1210 | hub->desc.wHubCharacteristics = |
1211 | le16_to_cpu(descriptor->wHubCharacteristics); | |
affae2bf | 1212 | /* set the bitmap */ |
6f5794a6 RB |
1213 | bitmap = (unsigned char *)&hub->desc.DeviceRemovable[0]; |
1214 | /* devices not removable by default */ | |
1215 | memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); | |
1216 | bitmap = (unsigned char *)&hub->desc.PortPowerCtrlMask[0]; | |
1217 | memset(bitmap, 0xff, (USB_MAXCHILDREN+1+7)/8); /* PowerMask = 1B */ | |
1218 | ||
1219 | for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) | |
1220 | hub->desc.DeviceRemovable[i] = descriptor->DeviceRemovable[i]; | |
1221 | ||
1222 | for (i = 0; i < ((hub->desc.bNbrPorts + 1 + 7)/8); i++) | |
1223 | hub->desc.DeviceRemovable[i] = descriptor->PortPowerCtrlMask[i]; | |
1224 | ||
affae2bf WD |
1225 | dev->maxchild = descriptor->bNbrPorts; |
1226 | USB_HUB_PRINTF("%d ports detected\n", dev->maxchild); | |
1227 | ||
1228 | switch (hub->desc.wHubCharacteristics & HUB_CHAR_LPSM) { | |
6f5794a6 RB |
1229 | case 0x00: |
1230 | USB_HUB_PRINTF("ganged power switching\n"); | |
1231 | break; | |
1232 | case 0x01: | |
1233 | USB_HUB_PRINTF("individual port power switching\n"); | |
1234 | break; | |
1235 | case 0x02: | |
1236 | case 0x03: | |
1237 | USB_HUB_PRINTF("unknown reserved power switching mode\n"); | |
1238 | break; | |
affae2bf WD |
1239 | } |
1240 | ||
1241 | if (hub->desc.wHubCharacteristics & HUB_CHAR_COMPOUND) | |
1242 | USB_HUB_PRINTF("part of a compound device\n"); | |
1243 | else | |
1244 | USB_HUB_PRINTF("standalone hub\n"); | |
1245 | ||
1246 | switch (hub->desc.wHubCharacteristics & HUB_CHAR_OCPM) { | |
6f5794a6 RB |
1247 | case 0x00: |
1248 | USB_HUB_PRINTF("global over-current protection\n"); | |
1249 | break; | |
1250 | case 0x08: | |
1251 | USB_HUB_PRINTF("individual port over-current protection\n"); | |
1252 | break; | |
1253 | case 0x10: | |
1254 | case 0x18: | |
1255 | USB_HUB_PRINTF("no over-current protection\n"); | |
1256 | break; | |
affae2bf | 1257 | } |
6f5794a6 RB |
1258 | |
1259 | USB_HUB_PRINTF("power on to power good time: %dms\n", | |
1260 | descriptor->bPwrOn2PwrGood * 2); | |
1261 | USB_HUB_PRINTF("hub controller current requirement: %dmA\n", | |
1262 | descriptor->bHubContrCurrent); | |
1263 | ||
affae2bf WD |
1264 | for (i = 0; i < dev->maxchild; i++) |
1265 | USB_HUB_PRINTF("port %d is%s removable\n", i + 1, | |
6f5794a6 RB |
1266 | hub->desc.DeviceRemovable[(i + 1) / 8] & \ |
1267 | (1 << ((i + 1) % 8)) ? " not" : ""); | |
1268 | ||
cd0a9de6 | 1269 | if (sizeof(struct usb_hub_status) > USB_BUFSIZ) { |
6f5794a6 RB |
1270 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status - " \ |
1271 | "too long: %d\n", descriptor->bLength); | |
cd0a9de6 WD |
1272 | return -1; |
1273 | } | |
1274 | ||
affae2bf | 1275 | if (usb_get_hub_status(dev, buffer) < 0) { |
6f5794a6 RB |
1276 | USB_HUB_PRINTF("usb_hub_configure: failed to get Status %lX\n", |
1277 | dev->status); | |
affae2bf WD |
1278 | return -1; |
1279 | } | |
6f5794a6 | 1280 | |
affae2bf WD |
1281 | hubsts = (struct usb_hub_status *)buffer; |
1282 | USB_HUB_PRINTF("get_hub_status returned status %X, change %X\n", | |
6f5794a6 RB |
1283 | le16_to_cpu(hubsts->wHubStatus), |
1284 | le16_to_cpu(hubsts->wHubChange)); | |
affae2bf | 1285 | USB_HUB_PRINTF("local power source is %s\n", |
6f5794a6 RB |
1286 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_LOCAL_POWER) ? \ |
1287 | "lost (inactive)" : "good"); | |
affae2bf | 1288 | USB_HUB_PRINTF("%sover-current condition exists\n", |
6f5794a6 RB |
1289 | (le16_to_cpu(hubsts->wHubStatus) & HUB_STATUS_OVERCURRENT) ? \ |
1290 | "" : "no "); | |
affae2bf | 1291 | usb_hub_power_on(hub); |
6f5794a6 | 1292 | |
affae2bf WD |
1293 | for (i = 0; i < dev->maxchild; i++) { |
1294 | struct usb_port_status portsts; | |
1295 | unsigned short portstatus, portchange; | |
1296 | ||
1297 | if (usb_get_port_status(dev, i + 1, &portsts) < 0) { | |
1298 | USB_HUB_PRINTF("get_port_status failed\n"); | |
1299 | continue; | |
1300 | } | |
6f5794a6 | 1301 | |
c918261c CE |
1302 | portstatus = le16_to_cpu(portsts.wPortStatus); |
1303 | portchange = le16_to_cpu(portsts.wPortChange); | |
6f5794a6 RB |
1304 | USB_HUB_PRINTF("Port %d Status %X Change %X\n", |
1305 | i + 1, portstatus, portchange); | |
1306 | ||
affae2bf WD |
1307 | if (portchange & USB_PORT_STAT_C_CONNECTION) { |
1308 | USB_HUB_PRINTF("port %d connection change\n", i + 1); | |
1309 | usb_hub_port_connect_change(dev, i); | |
1310 | } | |
1311 | if (portchange & USB_PORT_STAT_C_ENABLE) { | |
6f5794a6 RB |
1312 | USB_HUB_PRINTF("port %d enable change, status %x\n", |
1313 | i + 1, portstatus); | |
1314 | usb_clear_port_feature(dev, i + 1, | |
1315 | USB_PORT_FEAT_C_ENABLE); | |
1316 | ||
1317 | /* EM interference sometimes causes bad shielded USB | |
1318 | * devices to be shutdown by the hub, this hack enables | |
1319 | * them again. Works at least with mouse driver */ | |
affae2bf | 1320 | if (!(portstatus & USB_PORT_STAT_ENABLE) && |
6f5794a6 RB |
1321 | (portstatus & USB_PORT_STAT_CONNECTION) && |
1322 | ((dev->children[i]))) { | |
1323 | USB_HUB_PRINTF("already running port %i " \ | |
1324 | "disabled by hub (EMI?), " \ | |
1325 | "re-enabling...\n", i + 1); | |
affae2bf WD |
1326 | usb_hub_port_connect_change(dev, i); |
1327 | } | |
1328 | } | |
1329 | if (portstatus & USB_PORT_STAT_SUSPEND) { | |
1330 | USB_HUB_PRINTF("port %d suspend change\n", i + 1); | |
6f5794a6 RB |
1331 | usb_clear_port_feature(dev, i + 1, |
1332 | USB_PORT_FEAT_SUSPEND); | |
affae2bf WD |
1333 | } |
1334 | ||
1335 | if (portchange & USB_PORT_STAT_C_OVERCURRENT) { | |
1336 | USB_HUB_PRINTF("port %d over-current change\n", i + 1); | |
6f5794a6 RB |
1337 | usb_clear_port_feature(dev, i + 1, |
1338 | USB_PORT_FEAT_C_OVER_CURRENT); | |
affae2bf WD |
1339 | usb_hub_power_on(hub); |
1340 | } | |
1341 | ||
1342 | if (portchange & USB_PORT_STAT_C_RESET) { | |
1343 | USB_HUB_PRINTF("port %d reset change\n", i + 1); | |
6f5794a6 RB |
1344 | usb_clear_port_feature(dev, i + 1, |
1345 | USB_PORT_FEAT_C_RESET); | |
affae2bf WD |
1346 | } |
1347 | } /* end for i all ports */ | |
1348 | ||
1349 | return 0; | |
1350 | } | |
1351 | ||
1352 | int usb_hub_probe(struct usb_device *dev, int ifnum) | |
1353 | { | |
8f8bd565 | 1354 | struct usb_interface *iface; |
affae2bf WD |
1355 | struct usb_endpoint_descriptor *ep; |
1356 | int ret; | |
1357 | ||
1358 | iface = &dev->config.if_desc[ifnum]; | |
1359 | /* Is it a hub? */ | |
8f8bd565 | 1360 | if (iface->desc.bInterfaceClass != USB_CLASS_HUB) |
affae2bf WD |
1361 | return 0; |
1362 | /* Some hubs have a subclass of 1, which AFAICT according to the */ | |
1363 | /* specs is not defined, but it works */ | |
8f8bd565 TR |
1364 | if ((iface->desc.bInterfaceSubClass != 0) && |
1365 | (iface->desc.bInterfaceSubClass != 1)) | |
affae2bf WD |
1366 | return 0; |
1367 | /* Multiple endpoints? What kind of mutant ninja-hub is this? */ | |
8f8bd565 | 1368 | if (iface->desc.bNumEndpoints != 1) |
affae2bf WD |
1369 | return 0; |
1370 | ep = &iface->ep_desc[0]; | |
1371 | /* Output endpoint? Curiousier and curiousier.. */ | |
1372 | if (!(ep->bEndpointAddress & USB_DIR_IN)) | |
1373 | return 0; | |
1374 | /* If it's not an interrupt endpoint, we'd better punt! */ | |
1375 | if ((ep->bmAttributes & 3) != 3) | |
1376 | return 0; | |
1377 | /* We found a hub */ | |
1378 | USB_HUB_PRINTF("USB hub found\n"); | |
6f5794a6 | 1379 | ret = usb_hub_configure(dev); |
affae2bf WD |
1380 | return ret; |
1381 | } | |
1382 | ||
affae2bf | 1383 | /* EOF */ |