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