root / usb-linux.c @ b6741956
History | View | Annotate | Download (26.6 kB)
1 |
/*
|
---|---|
2 |
* Linux host USB redirector
|
3 |
*
|
4 |
* Copyright (c) 2005 Fabrice Bellard
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "vl.h" |
25 |
|
26 |
#if defined(__linux__)
|
27 |
#include <dirent.h> |
28 |
#include <sys/ioctl.h> |
29 |
#include <linux/usbdevice_fs.h> |
30 |
#include <linux/version.h> |
31 |
#include <signal.h> |
32 |
|
33 |
/* We redefine it to avoid version problems */
|
34 |
struct usb_ctrltransfer {
|
35 |
uint8_t bRequestType; |
36 |
uint8_t bRequest; |
37 |
uint16_t wValue; |
38 |
uint16_t wIndex; |
39 |
uint16_t wLength; |
40 |
uint32_t timeout; |
41 |
void *data;
|
42 |
}; |
43 |
|
44 |
typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, |
45 |
int vendor_id, int product_id, |
46 |
const char *product_name, int speed); |
47 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
48 |
char *product_name, int product_name_size, |
49 |
const char *devname); |
50 |
|
51 |
//#define DEBUG
|
52 |
//#define DEBUG_ISOCH
|
53 |
//#define USE_ASYNCIO
|
54 |
|
55 |
#define USBDEVFS_PATH "/proc/bus/usb" |
56 |
#define PRODUCT_NAME_SZ 32 |
57 |
#define SIG_ISOCOMPLETE (SIGRTMIN+7) |
58 |
#define MAX_ENDPOINTS 16 |
59 |
|
60 |
struct sigaction sigact;
|
61 |
|
62 |
/* endpoint association data */
|
63 |
struct endp_data {
|
64 |
uint8_t type; |
65 |
}; |
66 |
|
67 |
/* FIXME: move USBPacket to PendingURB */
|
68 |
typedef struct USBHostDevice { |
69 |
USBDevice dev; |
70 |
int fd;
|
71 |
int pipe_fds[2]; |
72 |
USBPacket *packet; |
73 |
struct endp_data endp_table[MAX_ENDPOINTS];
|
74 |
int configuration;
|
75 |
uint8_t descr[1024];
|
76 |
int descr_len;
|
77 |
int urbs_ready;
|
78 |
} USBHostDevice; |
79 |
|
80 |
typedef struct PendingURB { |
81 |
struct usbdevfs_urb *urb;
|
82 |
int status;
|
83 |
struct PendingURB *next;
|
84 |
} PendingURB; |
85 |
|
86 |
static PendingURB *pending_urbs = NULL; |
87 |
|
88 |
static int add_pending_urb(struct usbdevfs_urb *urb) |
89 |
{ |
90 |
PendingURB *purb = qemu_mallocz(sizeof(PendingURB));
|
91 |
if (purb) {
|
92 |
purb->urb = urb; |
93 |
purb->status = 0;
|
94 |
purb->next = pending_urbs; |
95 |
pending_urbs = purb; |
96 |
return 1; |
97 |
} |
98 |
return 0; |
99 |
} |
100 |
|
101 |
static int del_pending_urb(struct usbdevfs_urb *urb) |
102 |
{ |
103 |
PendingURB *purb = pending_urbs; |
104 |
PendingURB *prev = NULL;
|
105 |
|
106 |
while (purb && purb->urb != urb) {
|
107 |
prev = purb; |
108 |
purb = purb->next; |
109 |
} |
110 |
|
111 |
if (purb && purb->urb == urb) {
|
112 |
if (prev) {
|
113 |
prev->next = purb->next; |
114 |
} else {
|
115 |
pending_urbs = purb->next; |
116 |
} |
117 |
qemu_free(purb); |
118 |
return 1; |
119 |
} |
120 |
return 0; |
121 |
} |
122 |
|
123 |
#ifdef USE_ASYNCIO
|
124 |
static PendingURB *get_pending_urb(struct usbdevfs_urb *urb) |
125 |
{ |
126 |
PendingURB *purb = pending_urbs; |
127 |
|
128 |
while (purb && purb->urb != urb) {
|
129 |
purb = purb->next; |
130 |
} |
131 |
|
132 |
if (purb && purb->urb == urb) {
|
133 |
return purb;
|
134 |
} |
135 |
return NULL; |
136 |
} |
137 |
#endif
|
138 |
|
139 |
static int usb_host_update_interfaces(USBHostDevice *dev, int configuration) |
140 |
{ |
141 |
int dev_descr_len, config_descr_len;
|
142 |
int interface, nb_interfaces, nb_configurations;
|
143 |
int ret, i;
|
144 |
|
145 |
if (configuration == 0) /* address state - ignore */ |
146 |
return 1; |
147 |
|
148 |
i = 0;
|
149 |
dev_descr_len = dev->descr[0];
|
150 |
if (dev_descr_len > dev->descr_len)
|
151 |
goto fail;
|
152 |
nb_configurations = dev->descr[17];
|
153 |
|
154 |
i += dev_descr_len; |
155 |
while (i < dev->descr_len) {
|
156 |
#ifdef DEBUG
|
157 |
printf("i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
|
158 |
dev->descr[i], dev->descr[i+1]);
|
159 |
#endif
|
160 |
if (dev->descr[i+1] != USB_DT_CONFIG) { |
161 |
i += dev->descr[i]; |
162 |
continue;
|
163 |
} |
164 |
config_descr_len = dev->descr[i]; |
165 |
|
166 |
if (configuration == dev->descr[i + 5]) |
167 |
break;
|
168 |
|
169 |
i += config_descr_len; |
170 |
} |
171 |
|
172 |
if (i >= dev->descr_len) {
|
173 |
printf("usb_host: error - device has no matching configuration\n");
|
174 |
goto fail;
|
175 |
} |
176 |
nb_interfaces = dev->descr[i + 4];
|
177 |
|
178 |
#ifdef USBDEVFS_DISCONNECT
|
179 |
/* earlier Linux 2.4 do not support that */
|
180 |
{ |
181 |
struct usbdevfs_ioctl ctrl;
|
182 |
for (interface = 0; interface < nb_interfaces; interface++) { |
183 |
ctrl.ioctl_code = USBDEVFS_DISCONNECT; |
184 |
ctrl.ifno = interface; |
185 |
ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); |
186 |
if (ret < 0 && errno != ENODATA) { |
187 |
perror("USBDEVFS_DISCONNECT");
|
188 |
goto fail;
|
189 |
} |
190 |
} |
191 |
} |
192 |
#endif
|
193 |
|
194 |
/* XXX: only grab if all interfaces are free */
|
195 |
for (interface = 0; interface < nb_interfaces; interface++) { |
196 |
ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); |
197 |
if (ret < 0) { |
198 |
if (errno == EBUSY) {
|
199 |
fprintf(stderr, |
200 |
"usb_host: warning - device already grabbed\n");
|
201 |
} else {
|
202 |
perror("USBDEVFS_CLAIMINTERFACE");
|
203 |
} |
204 |
fail:
|
205 |
return 0; |
206 |
} |
207 |
} |
208 |
|
209 |
#ifdef DEBUG
|
210 |
printf("usb_host: %d interfaces claimed for configuration %d\n",
|
211 |
nb_interfaces, configuration); |
212 |
#endif
|
213 |
|
214 |
return 1; |
215 |
} |
216 |
|
217 |
static void usb_host_handle_reset(USBDevice *dev) |
218 |
{ |
219 |
#if 0
|
220 |
USBHostDevice *s = (USBHostDevice *)dev;
|
221 |
/* USBDEVFS_RESET, but not the first time as it has already be
|
222 |
done by the host OS */
|
223 |
ioctl(s->fd, USBDEVFS_RESET);
|
224 |
#endif
|
225 |
} |
226 |
|
227 |
static void usb_host_handle_destroy(USBDevice *dev) |
228 |
{ |
229 |
USBHostDevice *s = (USBHostDevice *)dev; |
230 |
|
231 |
if (s->fd >= 0) |
232 |
close(s->fd); |
233 |
qemu_free(s); |
234 |
} |
235 |
|
236 |
static int usb_linux_update_endp_table(USBHostDevice *s); |
237 |
|
238 |
static int usb_host_handle_control(USBDevice *dev, |
239 |
int request,
|
240 |
int value,
|
241 |
int index,
|
242 |
int length,
|
243 |
uint8_t *data) |
244 |
{ |
245 |
USBHostDevice *s = (USBHostDevice *)dev; |
246 |
struct usb_ctrltransfer ct;
|
247 |
struct usbdevfs_setinterface si;
|
248 |
int intf_update_required = 0; |
249 |
int ret;
|
250 |
|
251 |
if (request == (DeviceOutRequest | USB_REQ_SET_ADDRESS)) {
|
252 |
/* specific SET_ADDRESS support */
|
253 |
dev->addr = value; |
254 |
return 0; |
255 |
} else if (request == ((USB_RECIP_INTERFACE << 8) | |
256 |
USB_REQ_SET_INTERFACE)) { |
257 |
/* set alternate setting for the interface */
|
258 |
si.interface = index; |
259 |
si.altsetting = value; |
260 |
ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); |
261 |
usb_linux_update_endp_table(s); |
262 |
} else if (request == (DeviceOutRequest | USB_REQ_SET_CONFIGURATION)) { |
263 |
#ifdef DEBUG
|
264 |
printf("usb_host_handle_control: SET_CONFIGURATION request - "
|
265 |
"config %d\n", value & 0xff); |
266 |
#endif
|
267 |
if (s->configuration != (value & 0xff)) { |
268 |
s->configuration = (value & 0xff);
|
269 |
intf_update_required = 1;
|
270 |
} |
271 |
goto do_request;
|
272 |
} else {
|
273 |
do_request:
|
274 |
ct.bRequestType = request >> 8;
|
275 |
ct.bRequest = request; |
276 |
ct.wValue = value; |
277 |
ct.wIndex = index; |
278 |
ct.wLength = length; |
279 |
ct.timeout = 50;
|
280 |
ct.data = data; |
281 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
282 |
} |
283 |
|
284 |
if (ret < 0) { |
285 |
switch(errno) {
|
286 |
case ETIMEDOUT:
|
287 |
return USB_RET_NAK;
|
288 |
default:
|
289 |
return USB_RET_STALL;
|
290 |
} |
291 |
} else {
|
292 |
if (intf_update_required) {
|
293 |
#ifdef DEBUG
|
294 |
printf("usb_host_handle_control: updating interfaces\n");
|
295 |
#endif
|
296 |
usb_host_update_interfaces(s, value & 0xff);
|
297 |
} |
298 |
return ret;
|
299 |
} |
300 |
} |
301 |
|
302 |
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p); |
303 |
|
304 |
static int usb_host_handle_data(USBDevice *dev, USBPacket *p) |
305 |
{ |
306 |
USBHostDevice *s = (USBHostDevice *)dev; |
307 |
struct usbdevfs_bulktransfer bt;
|
308 |
int ret;
|
309 |
uint8_t devep = p->devep; |
310 |
|
311 |
if (s->endp_table[p->devep - 1].type == USBDEVFS_URB_TYPE_ISO) { |
312 |
return usb_host_handle_isoch(dev, p);
|
313 |
} |
314 |
|
315 |
/* XXX: optimize and handle all data types by looking at the
|
316 |
config descriptor */
|
317 |
if (p->pid == USB_TOKEN_IN)
|
318 |
devep |= 0x80;
|
319 |
bt.ep = devep; |
320 |
bt.len = p->len; |
321 |
bt.timeout = 50;
|
322 |
bt.data = p->data; |
323 |
ret = ioctl(s->fd, USBDEVFS_BULK, &bt); |
324 |
if (ret < 0) { |
325 |
switch(errno) {
|
326 |
case ETIMEDOUT:
|
327 |
return USB_RET_NAK;
|
328 |
case EPIPE:
|
329 |
default:
|
330 |
#ifdef DEBUG
|
331 |
printf("handle_data: errno=%d\n", errno);
|
332 |
#endif
|
333 |
return USB_RET_STALL;
|
334 |
} |
335 |
} else {
|
336 |
return ret;
|
337 |
} |
338 |
} |
339 |
|
340 |
#ifdef USE_ASYNCIO
|
341 |
static void urb_completion_pipe_read(void *opaque) |
342 |
{ |
343 |
USBHostDevice *s = opaque; |
344 |
USBPacket *p = s->packet; |
345 |
PendingURB *pending_urb = NULL;
|
346 |
struct usbdevfs_urb *purb = NULL; |
347 |
int len, ret;
|
348 |
|
349 |
len = read(s->pipe_fds[0], &pending_urb, sizeof(pending_urb)); |
350 |
if (len != sizeof(pending_urb)) { |
351 |
printf("urb_completion: error reading pending_urb, len=%d\n", len);
|
352 |
return;
|
353 |
} |
354 |
|
355 |
/* FIXME: handle pending_urb->status */
|
356 |
del_pending_urb(pending_urb->urb); |
357 |
|
358 |
if (!p) {
|
359 |
s->urbs_ready++; |
360 |
return;
|
361 |
} |
362 |
|
363 |
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb); |
364 |
if (ret < 0) { |
365 |
printf("urb_completion: REAPURBNDELAY ioctl=%d errno=%d\n",
|
366 |
ret, errno); |
367 |
return;
|
368 |
} |
369 |
|
370 |
#ifdef DEBUG_ISOCH
|
371 |
if (purb == pending_urb->urb) {
|
372 |
printf("urb_completion: urb mismatch reaped=%p pending=%p\n",
|
373 |
purb, urb); |
374 |
} |
375 |
#endif
|
376 |
|
377 |
p->len = purb->actual_length; |
378 |
usb_packet_complete(p); |
379 |
qemu_free(purb); |
380 |
s->packet = NULL;
|
381 |
} |
382 |
|
383 |
static void isoch_done(int signum, siginfo_t *info, void *context) |
384 |
{ |
385 |
struct usbdevfs_urb *urb = (struct usbdevfs_urb *)info->si_addr; |
386 |
USBHostDevice *s = (USBHostDevice *)urb->usercontext; |
387 |
PendingURB *purb; |
388 |
|
389 |
if (info->si_code != SI_ASYNCIO ||
|
390 |
info->si_signo != SIG_ISOCOMPLETE) { |
391 |
return;
|
392 |
} |
393 |
|
394 |
purb = get_pending_urb(urb); |
395 |
if (purb) {
|
396 |
purb->status = info->si_errno; |
397 |
write(s->pipe_fds[1], &purb, sizeof(purb)); |
398 |
} |
399 |
} |
400 |
#endif
|
401 |
|
402 |
static int usb_host_handle_isoch(USBDevice *dev, USBPacket *p) |
403 |
{ |
404 |
USBHostDevice *s = (USBHostDevice *)dev; |
405 |
struct usbdevfs_urb *urb, *purb = NULL; |
406 |
int ret;
|
407 |
uint8_t devep = p->devep; |
408 |
|
409 |
if (p->pid == USB_TOKEN_IN)
|
410 |
devep |= 0x80;
|
411 |
|
412 |
urb = qemu_mallocz(sizeof(struct usbdevfs_urb) + |
413 |
sizeof(struct usbdevfs_iso_packet_desc)); |
414 |
if (!urb) {
|
415 |
printf("usb_host_handle_isoch: malloc failed\n");
|
416 |
return 0; |
417 |
} |
418 |
|
419 |
urb->type = USBDEVFS_URB_TYPE_ISO; |
420 |
urb->endpoint = devep; |
421 |
urb->status = 0;
|
422 |
urb->flags = USBDEVFS_URB_ISO_ASAP; |
423 |
urb->buffer = p->data; |
424 |
urb->buffer_length = p->len; |
425 |
urb->actual_length = 0;
|
426 |
urb->start_frame = 0;
|
427 |
urb->error_count = 0;
|
428 |
#ifdef USE_ASYNCIO
|
429 |
urb->signr = SIG_ISOCOMPLETE; |
430 |
#else
|
431 |
urb->signr = 0;
|
432 |
#endif
|
433 |
urb->usercontext = s; |
434 |
urb->number_of_packets = 1;
|
435 |
urb->iso_frame_desc[0].length = p->len;
|
436 |
urb->iso_frame_desc[0].actual_length = 0; |
437 |
urb->iso_frame_desc[0].status = 0; |
438 |
ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); |
439 |
if (ret == 0) { |
440 |
if (!add_pending_urb(urb)) {
|
441 |
printf("usb_host_handle_isoch: add_pending_urb failed %p\n", urb);
|
442 |
} |
443 |
} else {
|
444 |
printf("usb_host_handle_isoch: SUBMITURB ioctl=%d errno=%d\n",
|
445 |
ret, errno); |
446 |
qemu_free(urb); |
447 |
switch(errno) {
|
448 |
case ETIMEDOUT:
|
449 |
return USB_RET_NAK;
|
450 |
case EPIPE:
|
451 |
default:
|
452 |
return USB_RET_STALL;
|
453 |
} |
454 |
} |
455 |
#ifdef USE_ASYNCIO
|
456 |
/* FIXME: handle urbs_ready together with sync io
|
457 |
* workaround for injecting the signaled urbs into current frame */
|
458 |
if (s->urbs_ready > 0) { |
459 |
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb); |
460 |
if (ret == 0) { |
461 |
ret = purb->actual_length; |
462 |
qemu_free(purb); |
463 |
s->urbs_ready--; |
464 |
} |
465 |
return ret;
|
466 |
} |
467 |
s->packet = p; |
468 |
return USB_RET_ASYNC;
|
469 |
#else
|
470 |
ret = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &purb); |
471 |
if (ret == 0) { |
472 |
if (del_pending_urb(purb)) {
|
473 |
ret = purb->actual_length; |
474 |
qemu_free(purb); |
475 |
} else {
|
476 |
printf("usb_host_handle_isoch: del_pending_urb failed %p\n", purb);
|
477 |
} |
478 |
} else {
|
479 |
#ifdef DEBUG_ISOCH
|
480 |
printf("usb_host_handle_isoch: REAPURBNDELAY ioctl=%d errno=%d\n",
|
481 |
ret, errno); |
482 |
#endif
|
483 |
} |
484 |
return ret;
|
485 |
#endif
|
486 |
} |
487 |
|
488 |
/* returns 1 on problem encountered or 0 for success */
|
489 |
static int usb_linux_update_endp_table(USBHostDevice *s) |
490 |
{ |
491 |
uint8_t *descriptors; |
492 |
uint8_t devep, type, configuration, alt_interface; |
493 |
struct usb_ctrltransfer ct;
|
494 |
int interface, ret, length, i;
|
495 |
|
496 |
ct.bRequestType = USB_DIR_IN; |
497 |
ct.bRequest = USB_REQ_GET_CONFIGURATION; |
498 |
ct.wValue = 0;
|
499 |
ct.wIndex = 0;
|
500 |
ct.wLength = 1;
|
501 |
ct.data = &configuration; |
502 |
ct.timeout = 50;
|
503 |
|
504 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
505 |
if (ret < 0) { |
506 |
perror("usb_linux_update_endp_table");
|
507 |
return 1; |
508 |
} |
509 |
|
510 |
/* in address state */
|
511 |
if (configuration == 0) |
512 |
return 1; |
513 |
|
514 |
/* get the desired configuration, interface, and endpoint descriptors
|
515 |
* from device description */
|
516 |
descriptors = &s->descr[18];
|
517 |
length = s->descr_len - 18;
|
518 |
i = 0;
|
519 |
|
520 |
if (descriptors[i + 1] != USB_DT_CONFIG || |
521 |
descriptors[i + 5] != configuration) {
|
522 |
printf("invalid descriptor data - configuration\n");
|
523 |
return 1; |
524 |
} |
525 |
i += descriptors[i]; |
526 |
|
527 |
while (i < length) {
|
528 |
if (descriptors[i + 1] != USB_DT_INTERFACE || |
529 |
(descriptors[i + 1] == USB_DT_INTERFACE &&
|
530 |
descriptors[i + 4] == 0)) { |
531 |
i += descriptors[i]; |
532 |
continue;
|
533 |
} |
534 |
|
535 |
interface = descriptors[i + 2];
|
536 |
|
537 |
ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; |
538 |
ct.bRequest = USB_REQ_GET_INTERFACE; |
539 |
ct.wValue = 0;
|
540 |
ct.wIndex = interface; |
541 |
ct.wLength = 1;
|
542 |
ct.data = &alt_interface; |
543 |
ct.timeout = 50;
|
544 |
|
545 |
ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); |
546 |
if (ret < 0) { |
547 |
perror("usb_linux_update_endp_table");
|
548 |
return 1; |
549 |
} |
550 |
|
551 |
/* the current interface descriptor is the active interface
|
552 |
* and has endpoints */
|
553 |
if (descriptors[i + 3] != alt_interface) { |
554 |
i += descriptors[i]; |
555 |
continue;
|
556 |
} |
557 |
|
558 |
/* advance to the endpoints */
|
559 |
while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) |
560 |
i += descriptors[i]; |
561 |
|
562 |
if (i >= length)
|
563 |
break;
|
564 |
|
565 |
while (i < length) {
|
566 |
if (descriptors[i + 1] != USB_DT_ENDPOINT) |
567 |
break;
|
568 |
|
569 |
devep = descriptors[i + 2];
|
570 |
switch (descriptors[i + 3] & 0x3) { |
571 |
case 0x00: |
572 |
type = USBDEVFS_URB_TYPE_CONTROL; |
573 |
break;
|
574 |
case 0x01: |
575 |
type = USBDEVFS_URB_TYPE_ISO; |
576 |
break;
|
577 |
case 0x02: |
578 |
type = USBDEVFS_URB_TYPE_BULK; |
579 |
break;
|
580 |
case 0x03: |
581 |
type = USBDEVFS_URB_TYPE_INTERRUPT; |
582 |
break;
|
583 |
default:
|
584 |
printf("usb_host: malformed endpoint type\n");
|
585 |
type = USBDEVFS_URB_TYPE_BULK; |
586 |
} |
587 |
s->endp_table[(devep & 0xf) - 1].type = type; |
588 |
|
589 |
i += descriptors[i]; |
590 |
} |
591 |
} |
592 |
return 0; |
593 |
} |
594 |
|
595 |
/* XXX: exclude high speed devices or implement EHCI */
|
596 |
USBDevice *usb_host_device_open(const char *devname) |
597 |
{ |
598 |
int fd = -1, ret; |
599 |
USBHostDevice *dev = NULL;
|
600 |
struct usbdevfs_connectinfo ci;
|
601 |
char buf[1024]; |
602 |
int bus_num, addr;
|
603 |
char product_name[PRODUCT_NAME_SZ];
|
604 |
|
605 |
dev = qemu_mallocz(sizeof(USBHostDevice));
|
606 |
if (!dev)
|
607 |
goto fail;
|
608 |
|
609 |
#ifdef DEBUG_ISOCH
|
610 |
printf("usb_host_device_open %s\n", devname);
|
611 |
#endif
|
612 |
if (usb_host_find_device(&bus_num, &addr,
|
613 |
product_name, sizeof(product_name),
|
614 |
devname) < 0)
|
615 |
return NULL; |
616 |
|
617 |
snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d", |
618 |
bus_num, addr); |
619 |
fd = open(buf, O_RDWR | O_NONBLOCK); |
620 |
if (fd < 0) { |
621 |
perror(buf); |
622 |
return NULL; |
623 |
} |
624 |
|
625 |
/* read the device description */
|
626 |
dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
|
627 |
if (dev->descr_len <= 0) { |
628 |
perror("usb_host_device_open: reading device data failed");
|
629 |
goto fail;
|
630 |
} |
631 |
|
632 |
#ifdef DEBUG
|
633 |
{ |
634 |
int x;
|
635 |
printf("=== begin dumping device descriptor data ===\n");
|
636 |
for (x = 0; x < dev->descr_len; x++) |
637 |
printf("%02x ", dev->descr[x]);
|
638 |
printf("\n=== end dumping device descriptor data ===\n");
|
639 |
} |
640 |
#endif
|
641 |
|
642 |
dev->fd = fd; |
643 |
dev->configuration = 1;
|
644 |
|
645 |
/* XXX - do something about initial configuration */
|
646 |
if (!usb_host_update_interfaces(dev, 1)) |
647 |
goto fail;
|
648 |
|
649 |
ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); |
650 |
if (ret < 0) { |
651 |
perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
|
652 |
goto fail;
|
653 |
} |
654 |
|
655 |
#ifdef DEBUG
|
656 |
printf("host USB device %d.%d grabbed\n", bus_num, addr);
|
657 |
#endif
|
658 |
|
659 |
ret = usb_linux_update_endp_table(dev); |
660 |
if (ret)
|
661 |
goto fail;
|
662 |
|
663 |
if (ci.slow)
|
664 |
dev->dev.speed = USB_SPEED_LOW; |
665 |
else
|
666 |
dev->dev.speed = USB_SPEED_HIGH; |
667 |
dev->dev.handle_packet = usb_generic_handle_packet; |
668 |
|
669 |
dev->dev.handle_reset = usb_host_handle_reset; |
670 |
dev->dev.handle_control = usb_host_handle_control; |
671 |
dev->dev.handle_data = usb_host_handle_data; |
672 |
dev->dev.handle_destroy = usb_host_handle_destroy; |
673 |
|
674 |
if (product_name[0] == '\0') |
675 |
snprintf(dev->dev.devname, sizeof(dev->dev.devname),
|
676 |
"host:%s", devname);
|
677 |
else
|
678 |
pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
|
679 |
product_name); |
680 |
|
681 |
#ifdef USE_ASYNCIO
|
682 |
/* set up the signal handlers */
|
683 |
sigemptyset(&sigact.sa_mask); |
684 |
sigact.sa_sigaction = isoch_done; |
685 |
sigact.sa_flags = SA_SIGINFO; |
686 |
sigact.sa_restorer = 0;
|
687 |
ret = sigaction(SIG_ISOCOMPLETE, &sigact, NULL);
|
688 |
if (ret < 0) { |
689 |
perror("usb_host_device_open: sigaction failed");
|
690 |
goto fail;
|
691 |
} |
692 |
|
693 |
if (pipe(dev->pipe_fds) < 0) { |
694 |
perror("usb_host_device_open: pipe creation failed");
|
695 |
goto fail;
|
696 |
} |
697 |
fcntl(dev->pipe_fds[0], F_SETFL, O_NONBLOCK | O_ASYNC);
|
698 |
fcntl(dev->pipe_fds[1], F_SETFL, O_NONBLOCK);
|
699 |
qemu_set_fd_handler(dev->pipe_fds[0], urb_completion_pipe_read, NULL, dev); |
700 |
#endif
|
701 |
dev->urbs_ready = 0;
|
702 |
return (USBDevice *)dev;
|
703 |
fail:
|
704 |
if (dev)
|
705 |
qemu_free(dev); |
706 |
close(fd); |
707 |
return NULL; |
708 |
} |
709 |
|
710 |
static int get_tag_value(char *buf, int buf_size, |
711 |
const char *str, const char *tag, |
712 |
const char *stopchars) |
713 |
{ |
714 |
const char *p; |
715 |
char *q;
|
716 |
p = strstr(str, tag); |
717 |
if (!p)
|
718 |
return -1; |
719 |
p += strlen(tag); |
720 |
while (isspace(*p))
|
721 |
p++; |
722 |
q = buf; |
723 |
while (*p != '\0' && !strchr(stopchars, *p)) { |
724 |
if ((q - buf) < (buf_size - 1)) |
725 |
*q++ = *p; |
726 |
p++; |
727 |
} |
728 |
*q = '\0';
|
729 |
return q - buf;
|
730 |
} |
731 |
|
732 |
static int usb_host_scan(void *opaque, USBScanFunc *func) |
733 |
{ |
734 |
FILE *f; |
735 |
char line[1024]; |
736 |
char buf[1024]; |
737 |
int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
|
738 |
int ret;
|
739 |
char product_name[512]; |
740 |
|
741 |
f = fopen(USBDEVFS_PATH "/devices", "r"); |
742 |
if (!f) {
|
743 |
term_printf("Could not open %s\n", USBDEVFS_PATH "/devices"); |
744 |
return 0; |
745 |
} |
746 |
device_count = 0;
|
747 |
bus_num = addr = speed = class_id = product_id = vendor_id = 0;
|
748 |
ret = 0;
|
749 |
for(;;) {
|
750 |
if (fgets(line, sizeof(line), f) == NULL) |
751 |
break;
|
752 |
if (strlen(line) > 0) |
753 |
line[strlen(line) - 1] = '\0'; |
754 |
if (line[0] == 'T' && line[1] == ':') { |
755 |
if (device_count && (vendor_id || product_id)) {
|
756 |
/* New device. Add the previously discovered device. */
|
757 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
758 |
product_id, product_name, speed); |
759 |
if (ret)
|
760 |
goto the_end;
|
761 |
} |
762 |
if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) |
763 |
goto fail;
|
764 |
bus_num = atoi(buf); |
765 |
if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) |
766 |
goto fail;
|
767 |
addr = atoi(buf); |
768 |
if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) |
769 |
goto fail;
|
770 |
if (!strcmp(buf, "480")) |
771 |
speed = USB_SPEED_HIGH; |
772 |
else if (!strcmp(buf, "1.5")) |
773 |
speed = USB_SPEED_LOW; |
774 |
else
|
775 |
speed = USB_SPEED_FULL; |
776 |
product_name[0] = '\0'; |
777 |
class_id = 0xff;
|
778 |
device_count++; |
779 |
product_id = 0;
|
780 |
vendor_id = 0;
|
781 |
} else if (line[0] == 'P' && line[1] == ':') { |
782 |
if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) |
783 |
goto fail;
|
784 |
vendor_id = strtoul(buf, NULL, 16); |
785 |
if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) |
786 |
goto fail;
|
787 |
product_id = strtoul(buf, NULL, 16); |
788 |
} else if (line[0] == 'S' && line[1] == ':') { |
789 |
if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) |
790 |
goto fail;
|
791 |
pstrcpy(product_name, sizeof(product_name), buf);
|
792 |
} else if (line[0] == 'D' && line[1] == ':') { |
793 |
if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) |
794 |
goto fail;
|
795 |
class_id = strtoul(buf, NULL, 16); |
796 |
} |
797 |
fail: ;
|
798 |
} |
799 |
if (device_count && (vendor_id || product_id)) {
|
800 |
/* Add the last device. */
|
801 |
ret = func(opaque, bus_num, addr, class_id, vendor_id, |
802 |
product_id, product_name, speed); |
803 |
} |
804 |
the_end:
|
805 |
fclose(f); |
806 |
return ret;
|
807 |
} |
808 |
|
809 |
typedef struct FindDeviceState { |
810 |
int vendor_id;
|
811 |
int product_id;
|
812 |
int bus_num;
|
813 |
int addr;
|
814 |
char product_name[PRODUCT_NAME_SZ];
|
815 |
} FindDeviceState; |
816 |
|
817 |
static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, |
818 |
int class_id,
|
819 |
int vendor_id, int product_id, |
820 |
const char *product_name, int speed) |
821 |
{ |
822 |
FindDeviceState *s = opaque; |
823 |
if ((vendor_id == s->vendor_id &&
|
824 |
product_id == s->product_id) || |
825 |
(bus_num == s->bus_num && |
826 |
addr == s->addr)) { |
827 |
pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); |
828 |
s->bus_num = bus_num; |
829 |
s->addr = addr; |
830 |
return 1; |
831 |
} else {
|
832 |
return 0; |
833 |
} |
834 |
} |
835 |
|
836 |
/* the syntax is :
|
837 |
'bus.addr' (decimal numbers) or
|
838 |
'vendor_id:product_id' (hexa numbers) */
|
839 |
static int usb_host_find_device(int *pbus_num, int *paddr, |
840 |
char *product_name, int product_name_size, |
841 |
const char *devname) |
842 |
{ |
843 |
const char *p; |
844 |
int ret;
|
845 |
FindDeviceState fs; |
846 |
|
847 |
p = strchr(devname, '.');
|
848 |
if (p) {
|
849 |
*pbus_num = strtoul(devname, NULL, 0); |
850 |
*paddr = strtoul(p + 1, NULL, 0); |
851 |
fs.bus_num = *pbus_num; |
852 |
fs.addr = *paddr; |
853 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
854 |
if (ret)
|
855 |
pstrcpy(product_name, product_name_size, fs.product_name); |
856 |
return 0; |
857 |
} |
858 |
p = strchr(devname, ':');
|
859 |
if (p) {
|
860 |
fs.vendor_id = strtoul(devname, NULL, 16); |
861 |
fs.product_id = strtoul(p + 1, NULL, 16); |
862 |
ret = usb_host_scan(&fs, usb_host_find_device_scan); |
863 |
if (ret) {
|
864 |
*pbus_num = fs.bus_num; |
865 |
*paddr = fs.addr; |
866 |
pstrcpy(product_name, product_name_size, fs.product_name); |
867 |
return 0; |
868 |
} |
869 |
} |
870 |
return -1; |
871 |
} |
872 |
|
873 |
/**********************/
|
874 |
/* USB host device info */
|
875 |
|
876 |
struct usb_class_info {
|
877 |
int class;
|
878 |
const char *class_name; |
879 |
}; |
880 |
|
881 |
static const struct usb_class_info usb_class_info[] = { |
882 |
{ USB_CLASS_AUDIO, "Audio"},
|
883 |
{ USB_CLASS_COMM, "Communication"},
|
884 |
{ USB_CLASS_HID, "HID"},
|
885 |
{ USB_CLASS_HUB, "Hub" },
|
886 |
{ USB_CLASS_PHYSICAL, "Physical" },
|
887 |
{ USB_CLASS_PRINTER, "Printer" },
|
888 |
{ USB_CLASS_MASS_STORAGE, "Storage" },
|
889 |
{ USB_CLASS_CDC_DATA, "Data" },
|
890 |
{ USB_CLASS_APP_SPEC, "Application Specific" },
|
891 |
{ USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
|
892 |
{ USB_CLASS_STILL_IMAGE, "Still Image" },
|
893 |
{ USB_CLASS_CSCID, "Smart Card" },
|
894 |
{ USB_CLASS_CONTENT_SEC, "Content Security" },
|
895 |
{ -1, NULL } |
896 |
}; |
897 |
|
898 |
static const char *usb_class_str(uint8_t class) |
899 |
{ |
900 |
const struct usb_class_info *p; |
901 |
for(p = usb_class_info; p->class != -1; p++) { |
902 |
if (p->class == class)
|
903 |
break;
|
904 |
} |
905 |
return p->class_name;
|
906 |
} |
907 |
|
908 |
void usb_info_device(int bus_num, int addr, int class_id, |
909 |
int vendor_id, int product_id, |
910 |
const char *product_name, |
911 |
int speed)
|
912 |
{ |
913 |
const char *class_str, *speed_str; |
914 |
|
915 |
switch(speed) {
|
916 |
case USB_SPEED_LOW:
|
917 |
speed_str = "1.5";
|
918 |
break;
|
919 |
case USB_SPEED_FULL:
|
920 |
speed_str = "12";
|
921 |
break;
|
922 |
case USB_SPEED_HIGH:
|
923 |
speed_str = "480";
|
924 |
break;
|
925 |
default:
|
926 |
speed_str = "?";
|
927 |
break;
|
928 |
} |
929 |
|
930 |
term_printf(" Device %d.%d, speed %s Mb/s\n",
|
931 |
bus_num, addr, speed_str); |
932 |
class_str = usb_class_str(class_id); |
933 |
if (class_str)
|
934 |
term_printf(" %s:", class_str);
|
935 |
else
|
936 |
term_printf(" Class %02x:", class_id);
|
937 |
term_printf(" USB device %04x:%04x", vendor_id, product_id);
|
938 |
if (product_name[0] != '\0') |
939 |
term_printf(", %s", product_name);
|
940 |
term_printf("\n");
|
941 |
} |
942 |
|
943 |
static int usb_host_info_device(void *opaque, int bus_num, int addr, |
944 |
int class_id,
|
945 |
int vendor_id, int product_id, |
946 |
const char *product_name, |
947 |
int speed)
|
948 |
{ |
949 |
usb_info_device(bus_num, addr, class_id, vendor_id, product_id, |
950 |
product_name, speed); |
951 |
return 0; |
952 |
} |
953 |
|
954 |
void usb_host_info(void) |
955 |
{ |
956 |
usb_host_scan(NULL, usb_host_info_device);
|
957 |
} |
958 |
|
959 |
#else
|
960 |
|
961 |
void usb_host_info(void) |
962 |
{ |
963 |
term_printf("USB host devices not supported\n");
|
964 |
} |
965 |
|
966 |
/* XXX: modify configure to compile the right host driver */
|
967 |
USBDevice *usb_host_device_open(const char *devname) |
968 |
{ |
969 |
return NULL; |
970 |
} |
971 |
|
972 |
#endif
|