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1 | /* | |
2 | * Linux host USB redirector | |
3 | * | |
4 | * Copyright (c) 2005 Fabrice Bellard | |
5 | * | |
6 | * Copyright (c) 2008 Max Krasnyansky | |
7 | * Support for host device auto connect & disconnect | |
8 | * Major rewrite to support fully async operation | |
9 | * | |
10 | * Copyright 2008 TJ <linux@tjworld.net> | |
11 | * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition | |
12 | * to the legacy /proc/bus/usb USB device discovery and handling | |
13 | * | |
14 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
15 | * of this software and associated documentation files (the "Software"), to deal | |
16 | * in the Software without restriction, including without limitation the rights | |
17 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
18 | * copies of the Software, and to permit persons to whom the Software is | |
19 | * furnished to do so, subject to the following conditions: | |
20 | * | |
21 | * The above copyright notice and this permission notice shall be included in | |
22 | * all copies or substantial portions of the Software. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
25 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
26 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
27 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
28 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
29 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
30 | * THE SOFTWARE. | |
31 | */ | |
32 | ||
33 | #include "qemu-common.h" | |
34 | #include "qemu-timer.h" | |
35 | #include "console.h" | |
36 | ||
37 | #if defined(__linux__) | |
38 | #include <dirent.h> | |
39 | #include <sys/ioctl.h> | |
40 | #include <signal.h> | |
41 | ||
42 | #include <linux/usbdevice_fs.h> | |
43 | #include <linux/version.h> | |
44 | #include "hw/usb.h" | |
45 | ||
46 | /* We redefine it to avoid version problems */ | |
47 | struct usb_ctrltransfer { | |
48 | uint8_t bRequestType; | |
49 | uint8_t bRequest; | |
50 | uint16_t wValue; | |
51 | uint16_t wIndex; | |
52 | uint16_t wLength; | |
53 | uint32_t timeout; | |
54 | void *data; | |
55 | }; | |
56 | ||
57 | struct usb_ctrlrequest { | |
58 | uint8_t bRequestType; | |
59 | uint8_t bRequest; | |
60 | uint16_t wValue; | |
61 | uint16_t wIndex; | |
62 | uint16_t wLength; | |
63 | }; | |
64 | ||
65 | typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id, | |
66 | int vendor_id, int product_id, | |
67 | const char *product_name, int speed); | |
68 | static int usb_host_find_device(int *pbus_num, int *paddr, | |
69 | char *product_name, int product_name_size, | |
70 | const char *devname); | |
71 | //#define DEBUG | |
72 | ||
73 | #ifdef DEBUG | |
74 | #define dprintf printf | |
75 | #else | |
76 | #define dprintf(...) | |
77 | #endif | |
78 | ||
79 | #define USBPROCBUS_PATH "/proc/bus/usb" | |
80 | #define PRODUCT_NAME_SZ 32 | |
81 | #define MAX_ENDPOINTS 16 | |
82 | #define USBDEVBUS_PATH "/dev/bus/usb" | |
83 | #define USBSYSBUS_PATH "/sys/bus/usb" | |
84 | ||
85 | static char *usb_host_device_path; | |
86 | ||
87 | #define USB_FS_NONE 0 | |
88 | #define USB_FS_PROC 1 | |
89 | #define USB_FS_DEV 2 | |
90 | #define USB_FS_SYS 3 | |
91 | ||
92 | static int usb_fs_type; | |
93 | ||
94 | /* endpoint association data */ | |
95 | struct endp_data { | |
96 | uint8_t type; | |
97 | uint8_t halted; | |
98 | }; | |
99 | ||
100 | enum { | |
101 | CTRL_STATE_IDLE = 0, | |
102 | CTRL_STATE_SETUP, | |
103 | CTRL_STATE_DATA, | |
104 | CTRL_STATE_ACK | |
105 | }; | |
106 | ||
107 | /* | |
108 | * Control transfer state. | |
109 | * Note that 'buffer' _must_ follow 'req' field because | |
110 | * we need contigious buffer when we submit control URB. | |
111 | */ | |
112 | struct ctrl_struct { | |
113 | uint16_t len; | |
114 | uint16_t offset; | |
115 | uint8_t state; | |
116 | struct usb_ctrlrequest req; | |
117 | uint8_t buffer[1024]; | |
118 | }; | |
119 | ||
120 | typedef struct USBHostDevice { | |
121 | USBDevice dev; | |
122 | int fd; | |
123 | ||
124 | uint8_t descr[1024]; | |
125 | int descr_len; | |
126 | int configuration; | |
127 | int ninterfaces; | |
128 | int closing; | |
129 | ||
130 | struct ctrl_struct ctrl; | |
131 | struct endp_data endp_table[MAX_ENDPOINTS]; | |
132 | ||
133 | /* Host side address */ | |
134 | int bus_num; | |
135 | int addr; | |
136 | ||
137 | struct USBHostDevice *next; | |
138 | } USBHostDevice; | |
139 | ||
140 | static int is_isoc(USBHostDevice *s, int ep) | |
141 | { | |
142 | return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO; | |
143 | } | |
144 | ||
145 | static int is_halted(USBHostDevice *s, int ep) | |
146 | { | |
147 | return s->endp_table[ep - 1].halted; | |
148 | } | |
149 | ||
150 | static void clear_halt(USBHostDevice *s, int ep) | |
151 | { | |
152 | s->endp_table[ep - 1].halted = 0; | |
153 | } | |
154 | ||
155 | static void set_halt(USBHostDevice *s, int ep) | |
156 | { | |
157 | s->endp_table[ep - 1].halted = 1; | |
158 | } | |
159 | ||
160 | static USBHostDevice *hostdev_list; | |
161 | ||
162 | static void hostdev_link(USBHostDevice *dev) | |
163 | { | |
164 | dev->next = hostdev_list; | |
165 | hostdev_list = dev; | |
166 | } | |
167 | ||
168 | static void hostdev_unlink(USBHostDevice *dev) | |
169 | { | |
170 | USBHostDevice *pdev = hostdev_list; | |
171 | USBHostDevice **prev = &hostdev_list; | |
172 | ||
173 | while (pdev) { | |
174 | if (pdev == dev) { | |
175 | *prev = dev->next; | |
176 | return; | |
177 | } | |
178 | ||
179 | prev = &pdev->next; | |
180 | pdev = pdev->next; | |
181 | } | |
182 | } | |
183 | ||
184 | static USBHostDevice *hostdev_find(int bus_num, int addr) | |
185 | { | |
186 | USBHostDevice *s = hostdev_list; | |
187 | while (s) { | |
188 | if (s->bus_num == bus_num && s->addr == addr) | |
189 | return s; | |
190 | s = s->next; | |
191 | } | |
192 | return NULL; | |
193 | } | |
194 | ||
195 | /* | |
196 | * Async URB state. | |
197 | * We always allocate one isoc descriptor even for bulk transfers | |
198 | * to simplify allocation and casts. | |
199 | */ | |
200 | typedef struct AsyncURB | |
201 | { | |
202 | struct usbdevfs_urb urb; | |
203 | struct usbdevfs_iso_packet_desc isocpd; | |
204 | ||
205 | USBPacket *packet; | |
206 | USBHostDevice *hdev; | |
207 | } AsyncURB; | |
208 | ||
209 | static AsyncURB *async_alloc(void) | |
210 | { | |
211 | return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB)); | |
212 | } | |
213 | ||
214 | static void async_free(AsyncURB *aurb) | |
215 | { | |
216 | qemu_free(aurb); | |
217 | } | |
218 | ||
219 | static void async_complete_ctrl(USBHostDevice *s, USBPacket *p) | |
220 | { | |
221 | switch(s->ctrl.state) { | |
222 | case CTRL_STATE_SETUP: | |
223 | if (p->len < s->ctrl.len) | |
224 | s->ctrl.len = p->len; | |
225 | s->ctrl.state = CTRL_STATE_DATA; | |
226 | p->len = 8; | |
227 | break; | |
228 | ||
229 | case CTRL_STATE_ACK: | |
230 | s->ctrl.state = CTRL_STATE_IDLE; | |
231 | p->len = 0; | |
232 | break; | |
233 | ||
234 | default: | |
235 | break; | |
236 | } | |
237 | } | |
238 | ||
239 | static void async_complete(void *opaque) | |
240 | { | |
241 | USBHostDevice *s = opaque; | |
242 | AsyncURB *aurb; | |
243 | ||
244 | while (1) { | |
245 | USBPacket *p; | |
246 | ||
247 | int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb); | |
248 | if (r < 0) { | |
249 | if (errno == EAGAIN) | |
250 | return; | |
251 | ||
252 | if (errno == ENODEV && !s->closing) { | |
253 | printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr); | |
254 | usb_device_del_addr(0, s->dev.addr); | |
255 | return; | |
256 | } | |
257 | ||
258 | dprintf("husb: async. reap urb failed errno %d\n", errno); | |
259 | return; | |
260 | } | |
261 | ||
262 | p = aurb->packet; | |
263 | ||
264 | dprintf("husb: async completed. aurb %p status %d alen %d\n", | |
265 | aurb, aurb->urb.status, aurb->urb.actual_length); | |
266 | ||
267 | if (p) { | |
268 | switch (aurb->urb.status) { | |
269 | case 0: | |
270 | p->len = aurb->urb.actual_length; | |
271 | if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) | |
272 | async_complete_ctrl(s, p); | |
273 | break; | |
274 | ||
275 | case -EPIPE: | |
276 | set_halt(s, p->devep); | |
277 | /* fall through */ | |
278 | default: | |
279 | p->len = USB_RET_NAK; | |
280 | break; | |
281 | } | |
282 | ||
283 | usb_packet_complete(p); | |
284 | } | |
285 | ||
286 | async_free(aurb); | |
287 | } | |
288 | } | |
289 | ||
290 | static void async_cancel(USBPacket *unused, void *opaque) | |
291 | { | |
292 | AsyncURB *aurb = opaque; | |
293 | USBHostDevice *s = aurb->hdev; | |
294 | ||
295 | dprintf("husb: async cancel. aurb %p\n", aurb); | |
296 | ||
297 | /* Mark it as dead (see async_complete above) */ | |
298 | aurb->packet = NULL; | |
299 | ||
300 | int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb); | |
301 | if (r < 0) { | |
302 | dprintf("husb: async. discard urb failed errno %d\n", errno); | |
303 | } | |
304 | } | |
305 | ||
306 | static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration) | |
307 | { | |
308 | int dev_descr_len, config_descr_len; | |
309 | int interface, nb_interfaces, nb_configurations; | |
310 | int ret, i; | |
311 | ||
312 | if (configuration == 0) /* address state - ignore */ | |
313 | return 1; | |
314 | ||
315 | dprintf("husb: claiming interfaces. config %d\n", configuration); | |
316 | ||
317 | i = 0; | |
318 | dev_descr_len = dev->descr[0]; | |
319 | if (dev_descr_len > dev->descr_len) | |
320 | goto fail; | |
321 | nb_configurations = dev->descr[17]; | |
322 | ||
323 | i += dev_descr_len; | |
324 | while (i < dev->descr_len) { | |
325 | dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len, | |
326 | dev->descr[i], dev->descr[i+1]); | |
327 | ||
328 | if (dev->descr[i+1] != USB_DT_CONFIG) { | |
329 | i += dev->descr[i]; | |
330 | continue; | |
331 | } | |
332 | config_descr_len = dev->descr[i]; | |
333 | ||
334 | printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration); | |
335 | ||
336 | if (configuration < 0 || configuration == dev->descr[i + 5]) { | |
337 | configuration = dev->descr[i + 5]; | |
338 | break; | |
339 | } | |
340 | ||
341 | i += config_descr_len; | |
342 | } | |
343 | ||
344 | if (i >= dev->descr_len) { | |
345 | fprintf(stderr, "husb: update iface failed. no matching configuration\n"); | |
346 | goto fail; | |
347 | } | |
348 | nb_interfaces = dev->descr[i + 4]; | |
349 | ||
350 | #ifdef USBDEVFS_DISCONNECT | |
351 | /* earlier Linux 2.4 do not support that */ | |
352 | { | |
353 | struct usbdevfs_ioctl ctrl; | |
354 | for (interface = 0; interface < nb_interfaces; interface++) { | |
355 | ctrl.ioctl_code = USBDEVFS_DISCONNECT; | |
356 | ctrl.ifno = interface; | |
357 | ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl); | |
358 | if (ret < 0 && errno != ENODATA) { | |
359 | perror("USBDEVFS_DISCONNECT"); | |
360 | goto fail; | |
361 | } | |
362 | } | |
363 | } | |
364 | #endif | |
365 | ||
366 | /* XXX: only grab if all interfaces are free */ | |
367 | for (interface = 0; interface < nb_interfaces; interface++) { | |
368 | ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface); | |
369 | if (ret < 0) { | |
370 | if (errno == EBUSY) { | |
371 | printf("husb: update iface. device already grabbed\n"); | |
372 | } else { | |
373 | perror("husb: failed to claim interface"); | |
374 | } | |
375 | fail: | |
376 | return 0; | |
377 | } | |
378 | } | |
379 | ||
380 | printf("husb: %d interfaces claimed for configuration %d\n", | |
381 | nb_interfaces, configuration); | |
382 | ||
383 | dev->ninterfaces = nb_interfaces; | |
384 | dev->configuration = configuration; | |
385 | return 1; | |
386 | } | |
387 | ||
388 | static int usb_host_release_interfaces(USBHostDevice *s) | |
389 | { | |
390 | int ret, i; | |
391 | ||
392 | dprintf("husb: releasing interfaces\n"); | |
393 | ||
394 | for (i = 0; i < s->ninterfaces; i++) { | |
395 | ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i); | |
396 | if (ret < 0) { | |
397 | perror("husb: failed to release interface"); | |
398 | return 0; | |
399 | } | |
400 | } | |
401 | ||
402 | return 1; | |
403 | } | |
404 | ||
405 | static void usb_host_handle_reset(USBDevice *dev) | |
406 | { | |
407 | USBHostDevice *s = (USBHostDevice *) dev; | |
408 | ||
409 | dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr); | |
410 | ||
411 | ioctl(s->fd, USBDEVFS_RESET); | |
412 | ||
413 | usb_host_claim_interfaces(s, s->configuration); | |
414 | } | |
415 | ||
416 | static void usb_host_handle_destroy(USBDevice *dev) | |
417 | { | |
418 | USBHostDevice *s = (USBHostDevice *)dev; | |
419 | ||
420 | s->closing = 1; | |
421 | ||
422 | qemu_set_fd_handler(s->fd, NULL, NULL, NULL); | |
423 | ||
424 | hostdev_unlink(s); | |
425 | ||
426 | async_complete(s); | |
427 | ||
428 | if (s->fd >= 0) | |
429 | close(s->fd); | |
430 | ||
431 | qemu_free(s); | |
432 | } | |
433 | ||
434 | static int usb_linux_update_endp_table(USBHostDevice *s); | |
435 | ||
436 | static int usb_host_handle_data(USBHostDevice *s, USBPacket *p) | |
437 | { | |
438 | struct usbdevfs_urb *urb; | |
439 | AsyncURB *aurb; | |
440 | int ret; | |
441 | ||
442 | aurb = async_alloc(); | |
443 | if (!aurb) { | |
444 | dprintf("husb: async malloc failed\n"); | |
445 | return USB_RET_NAK; | |
446 | } | |
447 | aurb->hdev = s; | |
448 | aurb->packet = p; | |
449 | ||
450 | urb = &aurb->urb; | |
451 | ||
452 | if (p->pid == USB_TOKEN_IN) | |
453 | urb->endpoint = p->devep | 0x80; | |
454 | else | |
455 | urb->endpoint = p->devep; | |
456 | ||
457 | if (is_halted(s, p->devep)) { | |
458 | ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint); | |
459 | if (ret < 0) { | |
460 | dprintf("husb: failed to clear halt. ep 0x%x errno %d\n", | |
461 | urb->endpoint, errno); | |
462 | return USB_RET_NAK; | |
463 | } | |
464 | clear_halt(s, p->devep); | |
465 | } | |
466 | ||
467 | urb->buffer = p->data; | |
468 | urb->buffer_length = p->len; | |
469 | ||
470 | if (is_isoc(s, p->devep)) { | |
471 | /* Setup ISOC transfer */ | |
472 | urb->type = USBDEVFS_URB_TYPE_ISO; | |
473 | urb->flags = USBDEVFS_URB_ISO_ASAP; | |
474 | urb->number_of_packets = 1; | |
475 | urb->iso_frame_desc[0].length = p->len; | |
476 | } else { | |
477 | /* Setup bulk transfer */ | |
478 | urb->type = USBDEVFS_URB_TYPE_BULK; | |
479 | } | |
480 | ||
481 | urb->usercontext = s; | |
482 | ||
483 | ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); | |
484 | ||
485 | dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb); | |
486 | ||
487 | if (ret < 0) { | |
488 | dprintf("husb: submit failed. errno %d\n", errno); | |
489 | async_free(aurb); | |
490 | ||
491 | switch(errno) { | |
492 | case ETIMEDOUT: | |
493 | return USB_RET_NAK; | |
494 | case EPIPE: | |
495 | default: | |
496 | return USB_RET_STALL; | |
497 | } | |
498 | } | |
499 | ||
500 | usb_defer_packet(p, async_cancel, aurb); | |
501 | return USB_RET_ASYNC; | |
502 | } | |
503 | ||
504 | static int ctrl_error(void) | |
505 | { | |
506 | if (errno == ETIMEDOUT) | |
507 | return USB_RET_NAK; | |
508 | else | |
509 | return USB_RET_STALL; | |
510 | } | |
511 | ||
512 | static int usb_host_set_address(USBHostDevice *s, int addr) | |
513 | { | |
514 | dprintf("husb: ctrl set addr %u\n", addr); | |
515 | s->dev.addr = addr; | |
516 | return 0; | |
517 | } | |
518 | ||
519 | static int usb_host_set_config(USBHostDevice *s, int config) | |
520 | { | |
521 | usb_host_release_interfaces(s); | |
522 | ||
523 | int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config); | |
524 | ||
525 | dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno); | |
526 | ||
527 | if (ret < 0) | |
528 | return ctrl_error(); | |
529 | ||
530 | usb_host_claim_interfaces(s, config); | |
531 | return 0; | |
532 | } | |
533 | ||
534 | static int usb_host_set_interface(USBHostDevice *s, int iface, int alt) | |
535 | { | |
536 | struct usbdevfs_setinterface si; | |
537 | int ret; | |
538 | ||
539 | si.interface = iface; | |
540 | si.altsetting = alt; | |
541 | ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si); | |
542 | ||
543 | dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n", | |
544 | iface, alt, ret, errno); | |
545 | ||
546 | if (ret < 0) | |
547 | return ctrl_error(); | |
548 | ||
549 | usb_linux_update_endp_table(s); | |
550 | return 0; | |
551 | } | |
552 | ||
553 | static int usb_host_handle_control(USBHostDevice *s, USBPacket *p) | |
554 | { | |
555 | struct usbdevfs_urb *urb; | |
556 | AsyncURB *aurb; | |
557 | int ret, value, index; | |
558 | ||
559 | /* | |
560 | * Process certain standard device requests. | |
561 | * These are infrequent and are processed synchronously. | |
562 | */ | |
563 | value = le16_to_cpu(s->ctrl.req.wValue); | |
564 | index = le16_to_cpu(s->ctrl.req.wIndex); | |
565 | ||
566 | dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n", | |
567 | s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index, | |
568 | s->ctrl.len); | |
569 | ||
570 | if (s->ctrl.req.bRequestType == 0) { | |
571 | switch (s->ctrl.req.bRequest) { | |
572 | case USB_REQ_SET_ADDRESS: | |
573 | return usb_host_set_address(s, value); | |
574 | ||
575 | case USB_REQ_SET_CONFIGURATION: | |
576 | return usb_host_set_config(s, value & 0xff); | |
577 | } | |
578 | } | |
579 | ||
580 | if (s->ctrl.req.bRequestType == 1 && | |
581 | s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) | |
582 | return usb_host_set_interface(s, index, value); | |
583 | ||
584 | /* The rest are asynchronous */ | |
585 | ||
586 | aurb = async_alloc(); | |
587 | if (!aurb) { | |
588 | dprintf("husb: async malloc failed\n"); | |
589 | return USB_RET_NAK; | |
590 | } | |
591 | aurb->hdev = s; | |
592 | aurb->packet = p; | |
593 | ||
594 | /* | |
595 | * Setup ctrl transfer. | |
596 | * | |
597 | * s->ctrl is layed out such that data buffer immediately follows | |
598 | * 'req' struct which is exactly what usbdevfs expects. | |
599 | */ | |
600 | urb = &aurb->urb; | |
601 | ||
602 | urb->type = USBDEVFS_URB_TYPE_CONTROL; | |
603 | urb->endpoint = p->devep; | |
604 | ||
605 | urb->buffer = &s->ctrl.req; | |
606 | urb->buffer_length = 8 + s->ctrl.len; | |
607 | ||
608 | urb->usercontext = s; | |
609 | ||
610 | ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb); | |
611 | ||
612 | dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb); | |
613 | ||
614 | if (ret < 0) { | |
615 | dprintf("husb: submit failed. errno %d\n", errno); | |
616 | async_free(aurb); | |
617 | ||
618 | switch(errno) { | |
619 | case ETIMEDOUT: | |
620 | return USB_RET_NAK; | |
621 | case EPIPE: | |
622 | default: | |
623 | return USB_RET_STALL; | |
624 | } | |
625 | } | |
626 | ||
627 | usb_defer_packet(p, async_cancel, aurb); | |
628 | return USB_RET_ASYNC; | |
629 | } | |
630 | ||
631 | static int do_token_setup(USBDevice *dev, USBPacket *p) | |
632 | { | |
633 | USBHostDevice *s = (USBHostDevice *) dev; | |
634 | int ret = 0; | |
635 | ||
636 | if (p->len != 8) | |
637 | return USB_RET_STALL; | |
638 | ||
639 | memcpy(&s->ctrl.req, p->data, 8); | |
640 | s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength); | |
641 | s->ctrl.offset = 0; | |
642 | s->ctrl.state = CTRL_STATE_SETUP; | |
643 | ||
644 | if (s->ctrl.req.bRequestType & USB_DIR_IN) { | |
645 | ret = usb_host_handle_control(s, p); | |
646 | if (ret < 0) | |
647 | return ret; | |
648 | ||
649 | if (ret < s->ctrl.len) | |
650 | s->ctrl.len = ret; | |
651 | s->ctrl.state = CTRL_STATE_DATA; | |
652 | } else { | |
653 | if (s->ctrl.len == 0) | |
654 | s->ctrl.state = CTRL_STATE_ACK; | |
655 | else | |
656 | s->ctrl.state = CTRL_STATE_DATA; | |
657 | } | |
658 | ||
659 | return ret; | |
660 | } | |
661 | ||
662 | static int do_token_in(USBDevice *dev, USBPacket *p) | |
663 | { | |
664 | USBHostDevice *s = (USBHostDevice *) dev; | |
665 | int ret = 0; | |
666 | ||
667 | if (p->devep != 0) | |
668 | return usb_host_handle_data(s, p); | |
669 | ||
670 | switch(s->ctrl.state) { | |
671 | case CTRL_STATE_ACK: | |
672 | if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { | |
673 | ret = usb_host_handle_control(s, p); | |
674 | if (ret == USB_RET_ASYNC) | |
675 | return USB_RET_ASYNC; | |
676 | ||
677 | s->ctrl.state = CTRL_STATE_IDLE; | |
678 | return ret > 0 ? 0 : ret; | |
679 | } | |
680 | ||
681 | return 0; | |
682 | ||
683 | case CTRL_STATE_DATA: | |
684 | if (s->ctrl.req.bRequestType & USB_DIR_IN) { | |
685 | int len = s->ctrl.len - s->ctrl.offset; | |
686 | if (len > p->len) | |
687 | len = p->len; | |
688 | memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len); | |
689 | s->ctrl.offset += len; | |
690 | if (s->ctrl.offset >= s->ctrl.len) | |
691 | s->ctrl.state = CTRL_STATE_ACK; | |
692 | return len; | |
693 | } | |
694 | ||
695 | s->ctrl.state = CTRL_STATE_IDLE; | |
696 | return USB_RET_STALL; | |
697 | ||
698 | default: | |
699 | return USB_RET_STALL; | |
700 | } | |
701 | } | |
702 | ||
703 | static int do_token_out(USBDevice *dev, USBPacket *p) | |
704 | { | |
705 | USBHostDevice *s = (USBHostDevice *) dev; | |
706 | ||
707 | if (p->devep != 0) | |
708 | return usb_host_handle_data(s, p); | |
709 | ||
710 | switch(s->ctrl.state) { | |
711 | case CTRL_STATE_ACK: | |
712 | if (s->ctrl.req.bRequestType & USB_DIR_IN) { | |
713 | s->ctrl.state = CTRL_STATE_IDLE; | |
714 | /* transfer OK */ | |
715 | } else { | |
716 | /* ignore additional output */ | |
717 | } | |
718 | return 0; | |
719 | ||
720 | case CTRL_STATE_DATA: | |
721 | if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) { | |
722 | int len = s->ctrl.len - s->ctrl.offset; | |
723 | if (len > p->len) | |
724 | len = p->len; | |
725 | memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len); | |
726 | s->ctrl.offset += len; | |
727 | if (s->ctrl.offset >= s->ctrl.len) | |
728 | s->ctrl.state = CTRL_STATE_ACK; | |
729 | return len; | |
730 | } | |
731 | ||
732 | s->ctrl.state = CTRL_STATE_IDLE; | |
733 | return USB_RET_STALL; | |
734 | ||
735 | default: | |
736 | return USB_RET_STALL; | |
737 | } | |
738 | } | |
739 | ||
740 | /* | |
741 | * Packet handler. | |
742 | * Called by the HC (host controller). | |
743 | * | |
744 | * Returns length of the transaction or one of the USB_RET_XXX codes. | |
745 | */ | |
746 | static int usb_host_handle_packet(USBDevice *s, USBPacket *p) | |
747 | { | |
748 | switch(p->pid) { | |
749 | case USB_MSG_ATTACH: | |
750 | s->state = USB_STATE_ATTACHED; | |
751 | return 0; | |
752 | ||
753 | case USB_MSG_DETACH: | |
754 | s->state = USB_STATE_NOTATTACHED; | |
755 | return 0; | |
756 | ||
757 | case USB_MSG_RESET: | |
758 | s->remote_wakeup = 0; | |
759 | s->addr = 0; | |
760 | s->state = USB_STATE_DEFAULT; | |
761 | s->handle_reset(s); | |
762 | return 0; | |
763 | } | |
764 | ||
765 | /* Rest of the PIDs must match our address */ | |
766 | if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) | |
767 | return USB_RET_NODEV; | |
768 | ||
769 | switch (p->pid) { | |
770 | case USB_TOKEN_SETUP: | |
771 | return do_token_setup(s, p); | |
772 | ||
773 | case USB_TOKEN_IN: | |
774 | return do_token_in(s, p); | |
775 | ||
776 | case USB_TOKEN_OUT: | |
777 | return do_token_out(s, p); | |
778 | ||
779 | default: | |
780 | return USB_RET_STALL; | |
781 | } | |
782 | } | |
783 | ||
784 | /* returns 1 on problem encountered or 0 for success */ | |
785 | static int usb_linux_update_endp_table(USBHostDevice *s) | |
786 | { | |
787 | uint8_t *descriptors; | |
788 | uint8_t devep, type, configuration, alt_interface; | |
789 | struct usbdevfs_ctrltransfer ct; | |
790 | int interface, ret, length, i; | |
791 | ||
792 | ct.bRequestType = USB_DIR_IN; | |
793 | ct.bRequest = USB_REQ_GET_CONFIGURATION; | |
794 | ct.wValue = 0; | |
795 | ct.wIndex = 0; | |
796 | ct.wLength = 1; | |
797 | ct.data = &configuration; | |
798 | ct.timeout = 50; | |
799 | ||
800 | ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); | |
801 | if (ret < 0) { | |
802 | perror("usb_linux_update_endp_table"); | |
803 | return 1; | |
804 | } | |
805 | ||
806 | /* in address state */ | |
807 | if (configuration == 0) | |
808 | return 1; | |
809 | ||
810 | /* get the desired configuration, interface, and endpoint descriptors | |
811 | * from device description */ | |
812 | descriptors = &s->descr[18]; | |
813 | length = s->descr_len - 18; | |
814 | i = 0; | |
815 | ||
816 | if (descriptors[i + 1] != USB_DT_CONFIG || | |
817 | descriptors[i + 5] != configuration) { | |
818 | dprintf("invalid descriptor data - configuration\n"); | |
819 | return 1; | |
820 | } | |
821 | i += descriptors[i]; | |
822 | ||
823 | while (i < length) { | |
824 | if (descriptors[i + 1] != USB_DT_INTERFACE || | |
825 | (descriptors[i + 1] == USB_DT_INTERFACE && | |
826 | descriptors[i + 4] == 0)) { | |
827 | i += descriptors[i]; | |
828 | continue; | |
829 | } | |
830 | ||
831 | interface = descriptors[i + 2]; | |
832 | ||
833 | ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE; | |
834 | ct.bRequest = USB_REQ_GET_INTERFACE; | |
835 | ct.wValue = 0; | |
836 | ct.wIndex = interface; | |
837 | ct.wLength = 1; | |
838 | ct.data = &alt_interface; | |
839 | ct.timeout = 50; | |
840 | ||
841 | ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct); | |
842 | if (ret < 0) { | |
843 | perror("usb_linux_update_endp_table"); | |
844 | return 1; | |
845 | } | |
846 | ||
847 | /* the current interface descriptor is the active interface | |
848 | * and has endpoints */ | |
849 | if (descriptors[i + 3] != alt_interface) { | |
850 | i += descriptors[i]; | |
851 | continue; | |
852 | } | |
853 | ||
854 | /* advance to the endpoints */ | |
855 | while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) | |
856 | i += descriptors[i]; | |
857 | ||
858 | if (i >= length) | |
859 | break; | |
860 | ||
861 | while (i < length) { | |
862 | if (descriptors[i + 1] != USB_DT_ENDPOINT) | |
863 | break; | |
864 | ||
865 | devep = descriptors[i + 2]; | |
866 | switch (descriptors[i + 3] & 0x3) { | |
867 | case 0x00: | |
868 | type = USBDEVFS_URB_TYPE_CONTROL; | |
869 | break; | |
870 | case 0x01: | |
871 | type = USBDEVFS_URB_TYPE_ISO; | |
872 | break; | |
873 | case 0x02: | |
874 | type = USBDEVFS_URB_TYPE_BULK; | |
875 | break; | |
876 | case 0x03: | |
877 | type = USBDEVFS_URB_TYPE_INTERRUPT; | |
878 | break; | |
879 | default: | |
880 | dprintf("usb_host: malformed endpoint type\n"); | |
881 | type = USBDEVFS_URB_TYPE_BULK; | |
882 | } | |
883 | s->endp_table[(devep & 0xf) - 1].type = type; | |
884 | s->endp_table[(devep & 0xf) - 1].halted = 0; | |
885 | ||
886 | i += descriptors[i]; | |
887 | } | |
888 | } | |
889 | return 0; | |
890 | } | |
891 | ||
892 | static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name) | |
893 | { | |
894 | int fd = -1, ret; | |
895 | USBHostDevice *dev = NULL; | |
896 | struct usbdevfs_connectinfo ci; | |
897 | char buf[1024]; | |
898 | ||
899 | dev = qemu_mallocz(sizeof(USBHostDevice)); | |
900 | if (!dev) | |
901 | goto fail; | |
902 | ||
903 | dev->bus_num = bus_num; | |
904 | dev->addr = addr; | |
905 | ||
906 | printf("husb: open device %d.%d\n", bus_num, addr); | |
907 | ||
908 | if (!usb_host_device_path) { | |
909 | perror("husb: USB Host Device Path not set"); | |
910 | goto fail; | |
911 | } | |
912 | snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path, | |
913 | bus_num, addr); | |
914 | fd = open(buf, O_RDWR | O_NONBLOCK); | |
915 | if (fd < 0) { | |
916 | perror(buf); | |
917 | goto fail; | |
918 | } | |
919 | dprintf("husb: opened %s\n", buf); | |
920 | ||
921 | /* read the device description */ | |
922 | dev->descr_len = read(fd, dev->descr, sizeof(dev->descr)); | |
923 | if (dev->descr_len <= 0) { | |
924 | perror("husb: reading device data failed"); | |
925 | goto fail; | |
926 | } | |
927 | ||
928 | #ifdef DEBUG | |
929 | { | |
930 | int x; | |
931 | printf("=== begin dumping device descriptor data ===\n"); | |
932 | for (x = 0; x < dev->descr_len; x++) | |
933 | printf("%02x ", dev->descr[x]); | |
934 | printf("\n=== end dumping device descriptor data ===\n"); | |
935 | } | |
936 | #endif | |
937 | ||
938 | dev->fd = fd; | |
939 | ||
940 | /* | |
941 | * Initial configuration is -1 which makes us claim first | |
942 | * available config. We used to start with 1, which does not | |
943 | * always work. I've seen devices where first config starts | |
944 | * with 2. | |
945 | */ | |
946 | if (!usb_host_claim_interfaces(dev, -1)) | |
947 | goto fail; | |
948 | ||
949 | ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci); | |
950 | if (ret < 0) { | |
951 | perror("usb_host_device_open: USBDEVFS_CONNECTINFO"); | |
952 | goto fail; | |
953 | } | |
954 | ||
955 | printf("husb: grabbed usb device %d.%d\n", bus_num, addr); | |
956 | ||
957 | ret = usb_linux_update_endp_table(dev); | |
958 | if (ret) | |
959 | goto fail; | |
960 | ||
961 | if (ci.slow) | |
962 | dev->dev.speed = USB_SPEED_LOW; | |
963 | else | |
964 | dev->dev.speed = USB_SPEED_HIGH; | |
965 | ||
966 | dev->dev.handle_packet = usb_host_handle_packet; | |
967 | dev->dev.handle_reset = usb_host_handle_reset; | |
968 | dev->dev.handle_destroy = usb_host_handle_destroy; | |
969 | ||
970 | if (!prod_name || prod_name[0] == '\0') | |
971 | snprintf(dev->dev.devname, sizeof(dev->dev.devname), | |
972 | "host:%d.%d", bus_num, addr); | |
973 | else | |
974 | pstrcpy(dev->dev.devname, sizeof(dev->dev.devname), | |
975 | prod_name); | |
976 | ||
977 | /* USB devio uses 'write' flag to check for async completions */ | |
978 | qemu_set_fd_handler(dev->fd, NULL, async_complete, dev); | |
979 | ||
980 | hostdev_link(dev); | |
981 | ||
982 | return (USBDevice *) dev; | |
983 | ||
984 | fail: | |
985 | if (dev) | |
986 | qemu_free(dev); | |
987 | ||
988 | close(fd); | |
989 | return NULL; | |
990 | } | |
991 | ||
992 | static int usb_host_auto_add(const char *spec); | |
993 | static int usb_host_auto_del(const char *spec); | |
994 | ||
995 | USBDevice *usb_host_device_open(const char *devname) | |
996 | { | |
997 | int bus_num, addr; | |
998 | char product_name[PRODUCT_NAME_SZ]; | |
999 | ||
1000 | if (strstr(devname, "auto:")) { | |
1001 | usb_host_auto_add(devname); | |
1002 | return NULL; | |
1003 | } | |
1004 | ||
1005 | if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), | |
1006 | devname) < 0) | |
1007 | return NULL; | |
1008 | ||
1009 | if (hostdev_find(bus_num, addr)) { | |
1010 | term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr); | |
1011 | return NULL; | |
1012 | } | |
1013 | ||
1014 | return usb_host_device_open_addr(bus_num, addr, product_name); | |
1015 | } | |
1016 | ||
1017 | int usb_host_device_close(const char *devname) | |
1018 | { | |
1019 | char product_name[PRODUCT_NAME_SZ]; | |
1020 | int bus_num, addr; | |
1021 | USBHostDevice *s; | |
1022 | ||
1023 | if (strstr(devname, "auto:")) | |
1024 | return usb_host_auto_del(devname); | |
1025 | ||
1026 | if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name), | |
1027 | devname) < 0) | |
1028 | return -1; | |
1029 | ||
1030 | s = hostdev_find(bus_num, addr); | |
1031 | if (s) { | |
1032 | usb_device_del_addr(0, s->dev.addr); | |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | return -1; | |
1037 | } | |
1038 | ||
1039 | static int get_tag_value(char *buf, int buf_size, | |
1040 | const char *str, const char *tag, | |
1041 | const char *stopchars) | |
1042 | { | |
1043 | const char *p; | |
1044 | char *q; | |
1045 | p = strstr(str, tag); | |
1046 | if (!p) | |
1047 | return -1; | |
1048 | p += strlen(tag); | |
1049 | while (isspace(*p)) | |
1050 | p++; | |
1051 | q = buf; | |
1052 | while (*p != '\0' && !strchr(stopchars, *p)) { | |
1053 | if ((q - buf) < (buf_size - 1)) | |
1054 | *q++ = *p; | |
1055 | p++; | |
1056 | } | |
1057 | *q = '\0'; | |
1058 | return q - buf; | |
1059 | } | |
1060 | ||
1061 | /* | |
1062 | * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine | |
1063 | * host's USB devices. This is legacy support since many distributions | |
1064 | * are moving to /sys/bus/usb | |
1065 | */ | |
1066 | static int usb_host_scan_dev(void *opaque, USBScanFunc *func) | |
1067 | { | |
1068 | FILE *f = 0; | |
1069 | char line[1024]; | |
1070 | char buf[1024]; | |
1071 | int bus_num, addr, speed, device_count, class_id, product_id, vendor_id; | |
1072 | char product_name[512]; | |
1073 | int ret = 0; | |
1074 | ||
1075 | if (!usb_host_device_path) { | |
1076 | perror("husb: USB Host Device Path not set"); | |
1077 | goto the_end; | |
1078 | } | |
1079 | snprintf(line, sizeof(line), "%s/devices", usb_host_device_path); | |
1080 | f = fopen(line, "r"); | |
1081 | if (!f) { | |
1082 | perror("husb: cannot open devices file"); | |
1083 | goto the_end; | |
1084 | } | |
1085 | ||
1086 | device_count = 0; | |
1087 | bus_num = addr = speed = class_id = product_id = vendor_id = 0; | |
1088 | for(;;) { | |
1089 | if (fgets(line, sizeof(line), f) == NULL) | |
1090 | break; | |
1091 | if (strlen(line) > 0) | |
1092 | line[strlen(line) - 1] = '\0'; | |
1093 | if (line[0] == 'T' && line[1] == ':') { | |
1094 | if (device_count && (vendor_id || product_id)) { | |
1095 | /* New device. Add the previously discovered device. */ | |
1096 | ret = func(opaque, bus_num, addr, class_id, vendor_id, | |
1097 | product_id, product_name, speed); | |
1098 | if (ret) | |
1099 | goto the_end; | |
1100 | } | |
1101 | if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) | |
1102 | goto fail; | |
1103 | bus_num = atoi(buf); | |
1104 | if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) | |
1105 | goto fail; | |
1106 | addr = atoi(buf); | |
1107 | if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) | |
1108 | goto fail; | |
1109 | if (!strcmp(buf, "480")) | |
1110 | speed = USB_SPEED_HIGH; | |
1111 | else if (!strcmp(buf, "1.5")) | |
1112 | speed = USB_SPEED_LOW; | |
1113 | else | |
1114 | speed = USB_SPEED_FULL; | |
1115 | product_name[0] = '\0'; | |
1116 | class_id = 0xff; | |
1117 | device_count++; | |
1118 | product_id = 0; | |
1119 | vendor_id = 0; | |
1120 | } else if (line[0] == 'P' && line[1] == ':') { | |
1121 | if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) | |
1122 | goto fail; | |
1123 | vendor_id = strtoul(buf, NULL, 16); | |
1124 | if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) | |
1125 | goto fail; | |
1126 | product_id = strtoul(buf, NULL, 16); | |
1127 | } else if (line[0] == 'S' && line[1] == ':') { | |
1128 | if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) | |
1129 | goto fail; | |
1130 | pstrcpy(product_name, sizeof(product_name), buf); | |
1131 | } else if (line[0] == 'D' && line[1] == ':') { | |
1132 | if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) | |
1133 | goto fail; | |
1134 | class_id = strtoul(buf, NULL, 16); | |
1135 | } | |
1136 | fail: ; | |
1137 | } | |
1138 | if (device_count && (vendor_id || product_id)) { | |
1139 | /* Add the last device. */ | |
1140 | ret = func(opaque, bus_num, addr, class_id, vendor_id, | |
1141 | product_id, product_name, speed); | |
1142 | } | |
1143 | the_end: | |
1144 | if (f) | |
1145 | fclose(f); | |
1146 | return ret; | |
1147 | } | |
1148 | ||
1149 | /* | |
1150 | * Read sys file-system device file | |
1151 | * | |
1152 | * @line address of buffer to put file contents in | |
1153 | * @line_size size of line | |
1154 | * @device_file path to device file (printf format string) | |
1155 | * @device_name device being opened (inserted into device_file) | |
1156 | * | |
1157 | * @return 0 failed, 1 succeeded ('line' contains data) | |
1158 | */ | |
1159 | static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name) | |
1160 | { | |
1161 | FILE *f; | |
1162 | int ret = 0; | |
1163 | char filename[PATH_MAX]; | |
1164 | ||
1165 | snprintf(filename, PATH_MAX, device_file, device_name); | |
1166 | f = fopen(filename, "r"); | |
1167 | if (f) { | |
1168 | fgets(line, line_size, f); | |
1169 | fclose(f); | |
1170 | ret = 1; | |
1171 | } else { | |
1172 | term_printf("husb: could not open %s\n", filename); | |
1173 | } | |
1174 | ||
1175 | return ret; | |
1176 | } | |
1177 | ||
1178 | /* | |
1179 | * Use /sys/bus/usb/devices/ directory to determine host's USB | |
1180 | * devices. | |
1181 | * | |
1182 | * This code is based on Robert Schiele's original patches posted to | |
1183 | * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950 | |
1184 | */ | |
1185 | static int usb_host_scan_sys(void *opaque, USBScanFunc *func) | |
1186 | { | |
1187 | DIR *dir = 0; | |
1188 | char line[1024]; | |
1189 | int bus_num, addr, speed, class_id, product_id, vendor_id; | |
1190 | int ret = 0; | |
1191 | char product_name[512]; | |
1192 | struct dirent *de; | |
1193 | ||
1194 | dir = opendir(USBSYSBUS_PATH "/devices"); | |
1195 | if (!dir) { | |
1196 | perror("husb: cannot open devices directory"); | |
1197 | goto the_end; | |
1198 | } | |
1199 | ||
1200 | while ((de = readdir(dir))) { | |
1201 | if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) { | |
1202 | char *tmpstr = de->d_name; | |
1203 | if (!strncmp(de->d_name, "usb", 3)) | |
1204 | tmpstr += 3; | |
1205 | bus_num = atoi(tmpstr); | |
1206 | ||
1207 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/devnum", de->d_name)) | |
1208 | goto the_end; | |
1209 | if (sscanf(line, "%d", &addr) != 1) | |
1210 | goto the_end; | |
1211 | ||
1212 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/bDeviceClass", de->d_name)) | |
1213 | goto the_end; | |
1214 | if (sscanf(line, "%x", &class_id) != 1) | |
1215 | goto the_end; | |
1216 | ||
1217 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idVendor", de->d_name)) | |
1218 | goto the_end; | |
1219 | if (sscanf(line, "%x", &vendor_id) != 1) | |
1220 | goto the_end; | |
1221 | ||
1222 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/idProduct", de->d_name)) | |
1223 | goto the_end; | |
1224 | if (sscanf(line, "%x", &product_id) != 1) | |
1225 | goto the_end; | |
1226 | ||
1227 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/product", de->d_name)) { | |
1228 | *product_name = 0; | |
1229 | } else { | |
1230 | if (strlen(line) > 0) | |
1231 | line[strlen(line) - 1] = '\0'; | |
1232 | pstrcpy(product_name, sizeof(product_name), line); | |
1233 | } | |
1234 | ||
1235 | if (!usb_host_read_file(line, sizeof(line), USBSYSBUS_PATH "/devices/%s/speed", de->d_name)) | |
1236 | goto the_end; | |
1237 | if (!strcmp(line, "480\n")) | |
1238 | speed = USB_SPEED_HIGH; | |
1239 | else if (!strcmp(line, "1.5\n")) | |
1240 | speed = USB_SPEED_LOW; | |
1241 | else | |
1242 | speed = USB_SPEED_FULL; | |
1243 | ||
1244 | ret = func(opaque, bus_num, addr, class_id, vendor_id, | |
1245 | product_id, product_name, speed); | |
1246 | if (ret) | |
1247 | goto the_end; | |
1248 | } | |
1249 | } | |
1250 | the_end: | |
1251 | if (dir) | |
1252 | closedir(dir); | |
1253 | return ret; | |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * Determine how to access the host's USB devices and call the | |
1258 | * specific support function. | |
1259 | */ | |
1260 | static int usb_host_scan(void *opaque, USBScanFunc *func) | |
1261 | { | |
1262 | FILE *f = 0; | |
1263 | DIR *dir = 0; | |
1264 | int ret = 0; | |
1265 | const char *devices = "/devices"; | |
1266 | const char *opened = "husb: opened %s%s\n"; | |
1267 | const char *fs_type[] = {"unknown", "proc", "dev", "sys"}; | |
1268 | char devpath[PATH_MAX]; | |
1269 | ||
1270 | /* only check the host once */ | |
1271 | if (!usb_fs_type) { | |
1272 | f = fopen(USBPROCBUS_PATH "/devices", "r"); | |
1273 | if (f) { | |
1274 | /* devices found in /proc/bus/usb/ */ | |
1275 | strcpy(devpath, USBPROCBUS_PATH); | |
1276 | usb_fs_type = USB_FS_PROC; | |
1277 | fclose(f); | |
1278 | dprintf(opened, USBPROCBUS_PATH, devices); | |
1279 | goto found_devices; | |
1280 | } | |
1281 | /* try additional methods if an access method hasn't been found yet */ | |
1282 | f = fopen(USBDEVBUS_PATH "/devices", "r"); | |
1283 | if (f) { | |
1284 | /* devices found in /dev/bus/usb/ */ | |
1285 | strcpy(devpath, USBDEVBUS_PATH); | |
1286 | usb_fs_type = USB_FS_DEV; | |
1287 | fclose(f); | |
1288 | dprintf(opened, USBDEVBUS_PATH, devices); | |
1289 | goto found_devices; | |
1290 | } | |
1291 | dir = opendir(USBSYSBUS_PATH "/devices"); | |
1292 | if (dir) { | |
1293 | /* devices found in /dev/bus/usb/ (yes - not a mistake!) */ | |
1294 | strcpy(devpath, USBDEVBUS_PATH); | |
1295 | usb_fs_type = USB_FS_SYS; | |
1296 | closedir(dir); | |
1297 | dprintf(opened, USBSYSBUS_PATH, devices); | |
1298 | goto found_devices; | |
1299 | } | |
1300 | found_devices: | |
1301 | if (!usb_fs_type) { | |
1302 | term_printf("husb: unable to access USB devices\n"); | |
1303 | return -ENOENT; | |
1304 | } | |
1305 | ||
1306 | /* the module setting (used later for opening devices) */ | |
1307 | usb_host_device_path = qemu_mallocz(strlen(devpath)+1); | |
1308 | if (usb_host_device_path) { | |
1309 | strcpy(usb_host_device_path, devpath); | |
1310 | term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path); | |
1311 | } else { | |
1312 | /* out of memory? */ | |
1313 | perror("husb: unable to allocate memory for device path"); | |
1314 | return -ENOMEM; | |
1315 | } | |
1316 | } | |
1317 | ||
1318 | switch (usb_fs_type) { | |
1319 | case USB_FS_PROC: | |
1320 | case USB_FS_DEV: | |
1321 | ret = usb_host_scan_dev(opaque, func); | |
1322 | break; | |
1323 | case USB_FS_SYS: | |
1324 | ret = usb_host_scan_sys(opaque, func); | |
1325 | break; | |
1326 | default: | |
1327 | ret = -EINVAL; | |
1328 | break; | |
1329 | } | |
1330 | return ret; | |
1331 | } | |
1332 | ||
1333 | struct USBAutoFilter { | |
1334 | struct USBAutoFilter *next; | |
1335 | int bus_num; | |
1336 | int addr; | |
1337 | int vendor_id; | |
1338 | int product_id; | |
1339 | }; | |
1340 | ||
1341 | static QEMUTimer *usb_auto_timer; | |
1342 | static struct USBAutoFilter *usb_auto_filter; | |
1343 | ||
1344 | static int usb_host_auto_scan(void *opaque, int bus_num, int addr, | |
1345 | int class_id, int vendor_id, int product_id, | |
1346 | const char *product_name, int speed) | |
1347 | { | |
1348 | struct USBAutoFilter *f; | |
1349 | struct USBDevice *dev; | |
1350 | ||
1351 | /* Ignore hubs */ | |
1352 | if (class_id == 9) | |
1353 | return 0; | |
1354 | ||
1355 | for (f = usb_auto_filter; f; f = f->next) { | |
1356 | if (f->bus_num >= 0 && f->bus_num != bus_num) | |
1357 | continue; | |
1358 | ||
1359 | if (f->addr >= 0 && f->addr != addr) | |
1360 | continue; | |
1361 | ||
1362 | if (f->vendor_id >= 0 && f->vendor_id != vendor_id) | |
1363 | continue; | |
1364 | ||
1365 | if (f->product_id >= 0 && f->product_id != product_id) | |
1366 | continue; | |
1367 | ||
1368 | /* We got a match */ | |
1369 | ||
1370 | /* Allredy attached ? */ | |
1371 | if (hostdev_find(bus_num, addr)) | |
1372 | return 0; | |
1373 | ||
1374 | dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr); | |
1375 | ||
1376 | dev = usb_host_device_open_addr(bus_num, addr, product_name); | |
1377 | if (dev) | |
1378 | usb_device_add_dev(dev); | |
1379 | } | |
1380 | ||
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | static void usb_host_auto_timer(void *unused) | |
1385 | { | |
1386 | usb_host_scan(NULL, usb_host_auto_scan); | |
1387 | qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000); | |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * Autoconnect filter | |
1392 | * Format: | |
1393 | * auto:bus:dev[:vid:pid] | |
1394 | * auto:bus.dev[:vid:pid] | |
1395 | * | |
1396 | * bus - bus number (dec, * means any) | |
1397 | * dev - device number (dec, * means any) | |
1398 | * vid - vendor id (hex, * means any) | |
1399 | * pid - product id (hex, * means any) | |
1400 | * | |
1401 | * See 'lsusb' output. | |
1402 | */ | |
1403 | static int parse_filter(const char *spec, struct USBAutoFilter *f) | |
1404 | { | |
1405 | enum { BUS, DEV, VID, PID, DONE }; | |
1406 | const char *p = spec; | |
1407 | int i; | |
1408 | ||
1409 | f->bus_num = -1; | |
1410 | f->addr = -1; | |
1411 | f->vendor_id = -1; | |
1412 | f->product_id = -1; | |
1413 | ||
1414 | for (i = BUS; i < DONE; i++) { | |
1415 | p = strpbrk(p, ":."); | |
1416 | if (!p) break; | |
1417 | p++; | |
1418 | ||
1419 | if (*p == '*') | |
1420 | continue; | |
1421 | ||
1422 | switch(i) { | |
1423 | case BUS: f->bus_num = strtol(p, NULL, 10); break; | |
1424 | case DEV: f->addr = strtol(p, NULL, 10); break; | |
1425 | case VID: f->vendor_id = strtol(p, NULL, 16); break; | |
1426 | case PID: f->product_id = strtol(p, NULL, 16); break; | |
1427 | } | |
1428 | } | |
1429 | ||
1430 | if (i < DEV) { | |
1431 | fprintf(stderr, "husb: invalid auto filter spec %s\n", spec); | |
1432 | return -1; | |
1433 | } | |
1434 | ||
1435 | return 0; | |
1436 | } | |
1437 | ||
1438 | static int match_filter(const struct USBAutoFilter *f1, | |
1439 | const struct USBAutoFilter *f2) | |
1440 | { | |
1441 | return f1->bus_num == f2->bus_num && | |
1442 | f1->addr == f2->addr && | |
1443 | f1->vendor_id == f2->vendor_id && | |
1444 | f1->product_id == f2->product_id; | |
1445 | } | |
1446 | ||
1447 | static int usb_host_auto_add(const char *spec) | |
1448 | { | |
1449 | struct USBAutoFilter filter, *f; | |
1450 | ||
1451 | if (parse_filter(spec, &filter) < 0) | |
1452 | return -1; | |
1453 | ||
1454 | f = qemu_mallocz(sizeof(*f)); | |
1455 | if (!f) { | |
1456 | fprintf(stderr, "husb: failed to allocate auto filter\n"); | |
1457 | return -1; | |
1458 | } | |
1459 | ||
1460 | *f = filter; | |
1461 | ||
1462 | if (!usb_auto_filter) { | |
1463 | /* | |
1464 | * First entry. Init and start the monitor. | |
1465 | * Right now we're using timer to check for new devices. | |
1466 | * If this turns out to be too expensive we can move that into a | |
1467 | * separate thread. | |
1468 | */ | |
1469 | usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL); | |
1470 | if (!usb_auto_timer) { | |
1471 | fprintf(stderr, "husb: failed to allocate auto scan timer\n"); | |
1472 | qemu_free(f); | |
1473 | return -1; | |
1474 | } | |
1475 | ||
1476 | /* Check for new devices every two seconds */ | |
1477 | qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000); | |
1478 | } | |
1479 | ||
1480 | dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n", | |
1481 | f->bus_num, f->addr, f->vendor_id, f->product_id); | |
1482 | ||
1483 | f->next = usb_auto_filter; | |
1484 | usb_auto_filter = f; | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int usb_host_auto_del(const char *spec) | |
1490 | { | |
1491 | struct USBAutoFilter *pf = usb_auto_filter; | |
1492 | struct USBAutoFilter **prev = &usb_auto_filter; | |
1493 | struct USBAutoFilter filter; | |
1494 | ||
1495 | if (parse_filter(spec, &filter) < 0) | |
1496 | return -1; | |
1497 | ||
1498 | while (pf) { | |
1499 | if (match_filter(pf, &filter)) { | |
1500 | dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n", | |
1501 | pf->bus_num, pf->addr, pf->vendor_id, pf->product_id); | |
1502 | ||
1503 | *prev = pf->next; | |
1504 | ||
1505 | if (!usb_auto_filter) { | |
1506 | /* No more filters. Stop scanning. */ | |
1507 | qemu_del_timer(usb_auto_timer); | |
1508 | qemu_free_timer(usb_auto_timer); | |
1509 | } | |
1510 | ||
1511 | return 0; | |
1512 | } | |
1513 | ||
1514 | prev = &pf->next; | |
1515 | pf = pf->next; | |
1516 | } | |
1517 | ||
1518 | return -1; | |
1519 | } | |
1520 | ||
1521 | typedef struct FindDeviceState { | |
1522 | int vendor_id; | |
1523 | int product_id; | |
1524 | int bus_num; | |
1525 | int addr; | |
1526 | char product_name[PRODUCT_NAME_SZ]; | |
1527 | } FindDeviceState; | |
1528 | ||
1529 | static int usb_host_find_device_scan(void *opaque, int bus_num, int addr, | |
1530 | int class_id, | |
1531 | int vendor_id, int product_id, | |
1532 | const char *product_name, int speed) | |
1533 | { | |
1534 | FindDeviceState *s = opaque; | |
1535 | if ((vendor_id == s->vendor_id && | |
1536 | product_id == s->product_id) || | |
1537 | (bus_num == s->bus_num && | |
1538 | addr == s->addr)) { | |
1539 | pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name); | |
1540 | s->bus_num = bus_num; | |
1541 | s->addr = addr; | |
1542 | return 1; | |
1543 | } else { | |
1544 | return 0; | |
1545 | } | |
1546 | } | |
1547 | ||
1548 | /* the syntax is : | |
1549 | 'bus.addr' (decimal numbers) or | |
1550 | 'vendor_id:product_id' (hexa numbers) */ | |
1551 | static int usb_host_find_device(int *pbus_num, int *paddr, | |
1552 | char *product_name, int product_name_size, | |
1553 | const char *devname) | |
1554 | { | |
1555 | const char *p; | |
1556 | int ret; | |
1557 | FindDeviceState fs; | |
1558 | ||
1559 | p = strchr(devname, '.'); | |
1560 | if (p) { | |
1561 | *pbus_num = strtoul(devname, NULL, 0); | |
1562 | *paddr = strtoul(p + 1, NULL, 0); | |
1563 | fs.bus_num = *pbus_num; | |
1564 | fs.addr = *paddr; | |
1565 | ret = usb_host_scan(&fs, usb_host_find_device_scan); | |
1566 | if (ret) | |
1567 | pstrcpy(product_name, product_name_size, fs.product_name); | |
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | p = strchr(devname, ':'); | |
1572 | if (p) { | |
1573 | fs.vendor_id = strtoul(devname, NULL, 16); | |
1574 | fs.product_id = strtoul(p + 1, NULL, 16); | |
1575 | ret = usb_host_scan(&fs, usb_host_find_device_scan); | |
1576 | if (ret) { | |
1577 | *pbus_num = fs.bus_num; | |
1578 | *paddr = fs.addr; | |
1579 | pstrcpy(product_name, product_name_size, fs.product_name); | |
1580 | return 0; | |
1581 | } | |
1582 | } | |
1583 | return -1; | |
1584 | } | |
1585 | ||
1586 | /**********************/ | |
1587 | /* USB host device info */ | |
1588 | ||
1589 | struct usb_class_info { | |
1590 | int class; | |
1591 | const char *class_name; | |
1592 | }; | |
1593 | ||
1594 | static const struct usb_class_info usb_class_info[] = { | |
1595 | { USB_CLASS_AUDIO, "Audio"}, | |
1596 | { USB_CLASS_COMM, "Communication"}, | |
1597 | { USB_CLASS_HID, "HID"}, | |
1598 | { USB_CLASS_HUB, "Hub" }, | |
1599 | { USB_CLASS_PHYSICAL, "Physical" }, | |
1600 | { USB_CLASS_PRINTER, "Printer" }, | |
1601 | { USB_CLASS_MASS_STORAGE, "Storage" }, | |
1602 | { USB_CLASS_CDC_DATA, "Data" }, | |
1603 | { USB_CLASS_APP_SPEC, "Application Specific" }, | |
1604 | { USB_CLASS_VENDOR_SPEC, "Vendor Specific" }, | |
1605 | { USB_CLASS_STILL_IMAGE, "Still Image" }, | |
1606 | { USB_CLASS_CSCID, "Smart Card" }, | |
1607 | { USB_CLASS_CONTENT_SEC, "Content Security" }, | |
1608 | { -1, NULL } | |
1609 | }; | |
1610 | ||
1611 | static const char *usb_class_str(uint8_t class) | |
1612 | { | |
1613 | const struct usb_class_info *p; | |
1614 | for(p = usb_class_info; p->class != -1; p++) { | |
1615 | if (p->class == class) | |
1616 | break; | |
1617 | } | |
1618 | return p->class_name; | |
1619 | } | |
1620 | ||
1621 | static void usb_info_device(int bus_num, int addr, int class_id, | |
1622 | int vendor_id, int product_id, | |
1623 | const char *product_name, | |
1624 | int speed) | |
1625 | { | |
1626 | const char *class_str, *speed_str; | |
1627 | ||
1628 | switch(speed) { | |
1629 | case USB_SPEED_LOW: | |
1630 | speed_str = "1.5"; | |
1631 | break; | |
1632 | case USB_SPEED_FULL: | |
1633 | speed_str = "12"; | |
1634 | break; | |
1635 | case USB_SPEED_HIGH: | |
1636 | speed_str = "480"; | |
1637 | break; | |
1638 | default: | |
1639 | speed_str = "?"; | |
1640 | break; | |
1641 | } | |
1642 | ||
1643 | term_printf(" Device %d.%d, speed %s Mb/s\n", | |
1644 | bus_num, addr, speed_str); | |
1645 | class_str = usb_class_str(class_id); | |
1646 | if (class_str) | |
1647 | term_printf(" %s:", class_str); | |
1648 | else | |
1649 | term_printf(" Class %02x:", class_id); | |
1650 | term_printf(" USB device %04x:%04x", vendor_id, product_id); | |
1651 | if (product_name[0] != '\0') | |
1652 | term_printf(", %s", product_name); | |
1653 | term_printf("\n"); | |
1654 | } | |
1655 | ||
1656 | static int usb_host_info_device(void *opaque, int bus_num, int addr, | |
1657 | int class_id, | |
1658 | int vendor_id, int product_id, | |
1659 | const char *product_name, | |
1660 | int speed) | |
1661 | { | |
1662 | usb_info_device(bus_num, addr, class_id, vendor_id, product_id, | |
1663 | product_name, speed); | |
1664 | return 0; | |
1665 | } | |
1666 | ||
1667 | static void dec2str(int val, char *str, size_t size) | |
1668 | { | |
1669 | if (val == -1) | |
1670 | snprintf(str, size, "*"); | |
1671 | else | |
1672 | snprintf(str, size, "%d", val); | |
1673 | } | |
1674 | ||
1675 | static void hex2str(int val, char *str, size_t size) | |
1676 | { | |
1677 | if (val == -1) | |
1678 | snprintf(str, size, "*"); | |
1679 | else | |
1680 | snprintf(str, size, "%x", val); | |
1681 | } | |
1682 | ||
1683 | void usb_host_info(void) | |
1684 | { | |
1685 | struct USBAutoFilter *f; | |
1686 | ||
1687 | usb_host_scan(NULL, usb_host_info_device); | |
1688 | ||
1689 | if (usb_auto_filter) | |
1690 | term_printf(" Auto filters:\n"); | |
1691 | for (f = usb_auto_filter; f; f = f->next) { | |
1692 | char bus[10], addr[10], vid[10], pid[10]; | |
1693 | dec2str(f->bus_num, bus, sizeof(bus)); | |
1694 | dec2str(f->addr, addr, sizeof(addr)); | |
1695 | hex2str(f->vendor_id, vid, sizeof(vid)); | |
1696 | hex2str(f->product_id, pid, sizeof(pid)); | |
1697 | term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid); | |
1698 | } | |
1699 | } | |
1700 | ||
1701 | #else | |
1702 | ||
1703 | #include "hw/usb.h" | |
1704 | ||
1705 | void usb_host_info(void) | |
1706 | { | |
1707 | term_printf("USB host devices not supported\n"); | |
1708 | } | |
1709 | ||
1710 | /* XXX: modify configure to compile the right host driver */ | |
1711 | USBDevice *usb_host_device_open(const char *devname) | |
1712 | { | |
1713 | return NULL; | |
1714 | } | |
1715 | ||
1716 | int usb_host_device_close(const char *devname) | |
1717 | { | |
1718 | return 0; | |
1719 | } | |
1720 | ||
1721 | #endif |