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pci: implement pci bridge filtering.
[qemu/aliguori-queue.git] / usb-linux.c
blob96f9a27e85f8fd041832c3f8da54d57e249462da
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 "monitor.h"
36
37 #include <dirent.h>
38 #include <sys/ioctl.h>
39 #include <signal.h>
40
41 #include <linux/usbdevice_fs.h>
42 #include <linux/version.h>
43 #include "hw/usb.h"
44
45 /* We redefine it to avoid version problems */
46 struct usb_ctrltransfer {
47 uint8_t bRequestType;
48 uint8_t bRequest;
49 uint16_t wValue;
50 uint16_t wIndex;
51 uint16_t wLength;
52 uint32_t timeout;
53 void *data;
54 };
55
56 struct usb_ctrlrequest {
57 uint8_t bRequestType;
58 uint8_t bRequest;
59 uint16_t wValue;
60 uint16_t wIndex;
61 uint16_t wLength;
62 };
63
64 typedef int USBScanFunc(void *opaque, int bus_num, int addr, int class_id,
65 int vendor_id, int product_id,
66 const char *product_name, int speed);
67
68 #define DEBUG
69
70 #ifdef DEBUG
71 #define dprintf printf
72 #else
73 #define dprintf(...)
74 #endif
75
76 #define USBDBG_DEVOPENED "husb: opened %s/devices\n"
77
78 #define USBPROCBUS_PATH "/proc/bus/usb"
79 #define PRODUCT_NAME_SZ 32
80 #define MAX_ENDPOINTS 16
81 #define USBDEVBUS_PATH "/dev/bus/usb"
82 #define USBSYSBUS_PATH "/sys/bus/usb"
83
84 static char *usb_host_device_path;
85
86 #define USB_FS_NONE 0
87 #define USB_FS_PROC 1
88 #define USB_FS_DEV 2
89 #define USB_FS_SYS 3
90
91 static int usb_fs_type;
92
93 /* endpoint association data */
94 struct endp_data {
95 uint8_t type;
96 uint8_t halted;
97 };
98
99 enum {
100 CTRL_STATE_IDLE = 0,
101 CTRL_STATE_SETUP,
102 CTRL_STATE_DATA,
103 CTRL_STATE_ACK
104 };
105
106 /*
107 * Control transfer state.
108 * Note that 'buffer' _must_ follow 'req' field because
109 * we need contigious buffer when we submit control URB.
110 */
111 struct ctrl_struct {
112 uint16_t len;
113 uint16_t offset;
114 uint8_t state;
115 struct usb_ctrlrequest req;
116 uint8_t buffer[2048];
117 };
118
119 struct USBAutoFilter {
120 uint32_t bus_num;
121 uint32_t addr;
122 uint32_t vendor_id;
123 uint32_t product_id;
124 };
125
126 typedef struct USBHostDevice {
127 USBDevice dev;
128 int fd;
129
130 uint8_t descr[1024];
131 int descr_len;
132 int configuration;
133 int ninterfaces;
134 int closing;
135
136 struct ctrl_struct ctrl;
137 struct endp_data endp_table[MAX_ENDPOINTS];
138
139 /* Host side address */
140 int bus_num;
141 int addr;
142 struct USBAutoFilter match;
143
144 QTAILQ_ENTRY(USBHostDevice) next;
145 } USBHostDevice;
146
147 static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
148
149 static int usb_host_close(USBHostDevice *dev);
150 static int parse_filter(const char *spec, struct USBAutoFilter *f);
151 static void usb_host_auto_check(void *unused);
152
153 static int is_isoc(USBHostDevice *s, int ep)
154 {
155 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
156 }
157
158 static int is_halted(USBHostDevice *s, int ep)
159 {
160 return s->endp_table[ep - 1].halted;
161 }
162
163 static void clear_halt(USBHostDevice *s, int ep)
164 {
165 s->endp_table[ep - 1].halted = 0;
166 }
167
168 static void set_halt(USBHostDevice *s, int ep)
169 {
170 s->endp_table[ep - 1].halted = 1;
171 }
172
173 /*
174 * Async URB state.
175 * We always allocate one isoc descriptor even for bulk transfers
176 * to simplify allocation and casts.
177 */
178 typedef struct AsyncURB
179 {
180 struct usbdevfs_urb urb;
181 struct usbdevfs_iso_packet_desc isocpd;
182
183 USBPacket *packet;
184 USBHostDevice *hdev;
185 } AsyncURB;
186
187 static AsyncURB *async_alloc(void)
188 {
189 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
190 }
191
192 static void async_free(AsyncURB *aurb)
193 {
194 qemu_free(aurb);
195 }
196
197 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
198 {
199 switch(s->ctrl.state) {
200 case CTRL_STATE_SETUP:
201 if (p->len < s->ctrl.len)
202 s->ctrl.len = p->len;
203 s->ctrl.state = CTRL_STATE_DATA;
204 p->len = 8;
205 break;
206
207 case CTRL_STATE_ACK:
208 s->ctrl.state = CTRL_STATE_IDLE;
209 p->len = 0;
210 break;
211
212 default:
213 break;
214 }
215 }
216
217 static void async_complete(void *opaque)
218 {
219 USBHostDevice *s = opaque;
220 AsyncURB *aurb;
221
222 while (1) {
223 USBPacket *p;
224
225 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
226 if (r < 0) {
227 if (errno == EAGAIN)
228 return;
229
230 if (errno == ENODEV && !s->closing) {
231 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
232 usb_host_close(s);
233 usb_host_auto_check(NULL);
234 return;
235 }
236
237 dprintf("husb: async. reap urb failed errno %d\n", errno);
238 return;
239 }
240
241 p = aurb->packet;
242
243 dprintf("husb: async completed. aurb %p status %d alen %d\n",
244 aurb, aurb->urb.status, aurb->urb.actual_length);
245
246 if (p) {
247 switch (aurb->urb.status) {
248 case 0:
249 p->len = aurb->urb.actual_length;
250 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
251 async_complete_ctrl(s, p);
252 break;
253
254 case -EPIPE:
255 set_halt(s, p->devep);
256 p->len = USB_RET_STALL;
257 break;
258
259 default:
260 p->len = USB_RET_NAK;
261 break;
262 }
263
264 usb_packet_complete(p);
265 }
266
267 async_free(aurb);
268 }
269 }
270
271 static void async_cancel(USBPacket *unused, void *opaque)
272 {
273 AsyncURB *aurb = opaque;
274 USBHostDevice *s = aurb->hdev;
275
276 dprintf("husb: async cancel. aurb %p\n", aurb);
277
278 /* Mark it as dead (see async_complete above) */
279 aurb->packet = NULL;
280
281 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
282 if (r < 0) {
283 dprintf("husb: async. discard urb failed errno %d\n", errno);
284 }
285 }
286
287 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
288 {
289 int dev_descr_len, config_descr_len;
290 int interface, nb_interfaces, nb_configurations;
291 int ret, i;
292
293 if (configuration == 0) /* address state - ignore */
294 return 1;
295
296 dprintf("husb: claiming interfaces. config %d\n", configuration);
297
298 i = 0;
299 dev_descr_len = dev->descr[0];
300 if (dev_descr_len > dev->descr_len)
301 goto fail;
302 nb_configurations = dev->descr[17];
303
304 i += dev_descr_len;
305 while (i < dev->descr_len) {
306 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
307 dev->descr[i], dev->descr[i+1]);
308
309 if (dev->descr[i+1] != USB_DT_CONFIG) {
310 i += dev->descr[i];
311 continue;
312 }
313 config_descr_len = dev->descr[i];
314
315 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
316
317 if (configuration < 0 || configuration == dev->descr[i + 5]) {
318 configuration = dev->descr[i + 5];
319 break;
320 }
321
322 i += config_descr_len;
323 }
324
325 if (i >= dev->descr_len) {
326 fprintf(stderr, "husb: update iface failed. no matching configuration\n");
327 goto fail;
328 }
329 nb_interfaces = dev->descr[i + 4];
330
331 #ifdef USBDEVFS_DISCONNECT
332 /* earlier Linux 2.4 do not support that */
333 {
334 struct usbdevfs_ioctl ctrl;
335 for (interface = 0; interface < nb_interfaces; interface++) {
336 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
337 ctrl.ifno = interface;
338 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
339 if (ret < 0 && errno != ENODATA) {
340 perror("USBDEVFS_DISCONNECT");
341 goto fail;
342 }
343 }
344 }
345 #endif
346
347 /* XXX: only grab if all interfaces are free */
348 for (interface = 0; interface < nb_interfaces; interface++) {
349 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
350 if (ret < 0) {
351 if (errno == EBUSY) {
352 printf("husb: update iface. device already grabbed\n");
353 } else {
354 perror("husb: failed to claim interface");
355 }
356 fail:
357 return 0;
358 }
359 }
360
361 printf("husb: %d interfaces claimed for configuration %d\n",
362 nb_interfaces, configuration);
363
364 dev->ninterfaces = nb_interfaces;
365 dev->configuration = configuration;
366 return 1;
367 }
368
369 static int usb_host_release_interfaces(USBHostDevice *s)
370 {
371 int ret, i;
372
373 dprintf("husb: releasing interfaces\n");
374
375 for (i = 0; i < s->ninterfaces; i++) {
376 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
377 if (ret < 0) {
378 perror("husb: failed to release interface");
379 return 0;
380 }
381 }
382
383 return 1;
384 }
385
386 static void usb_host_handle_reset(USBDevice *dev)
387 {
388 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
389
390 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
391
392 ioctl(s->fd, USBDEVFS_RESET);
393
394 usb_host_claim_interfaces(s, s->configuration);
395 }
396
397 static void usb_host_handle_destroy(USBDevice *dev)
398 {
399 USBHostDevice *s = (USBHostDevice *)dev;
400
401 usb_host_close(s);
402 QTAILQ_REMOVE(&hostdevs, s, next);
403 }
404
405 static int usb_linux_update_endp_table(USBHostDevice *s);
406
407 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
408 {
409 struct usbdevfs_urb *urb;
410 AsyncURB *aurb;
411 int ret;
412
413 aurb = async_alloc();
414 aurb->hdev = s;
415 aurb->packet = p;
416
417 urb = &aurb->urb;
418
419 if (p->pid == USB_TOKEN_IN)
420 urb->endpoint = p->devep | 0x80;
421 else
422 urb->endpoint = p->devep;
423
424 if (is_halted(s, p->devep)) {
425 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
426 if (ret < 0) {
427 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
428 urb->endpoint, errno);
429 return USB_RET_NAK;
430 }
431 clear_halt(s, p->devep);
432 }
433
434 urb->buffer = p->data;
435 urb->buffer_length = p->len;
436
437 if (is_isoc(s, p->devep)) {
438 /* Setup ISOC transfer */
439 urb->type = USBDEVFS_URB_TYPE_ISO;
440 urb->flags = USBDEVFS_URB_ISO_ASAP;
441 urb->number_of_packets = 1;
442 urb->iso_frame_desc[0].length = p->len;
443 } else {
444 /* Setup bulk transfer */
445 urb->type = USBDEVFS_URB_TYPE_BULK;
446 }
447
448 urb->usercontext = s;
449
450 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
451
452 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
453
454 if (ret < 0) {
455 dprintf("husb: submit failed. errno %d\n", errno);
456 async_free(aurb);
457
458 switch(errno) {
459 case ETIMEDOUT:
460 return USB_RET_NAK;
461 case EPIPE:
462 default:
463 return USB_RET_STALL;
464 }
465 }
466
467 usb_defer_packet(p, async_cancel, aurb);
468 return USB_RET_ASYNC;
469 }
470
471 static int ctrl_error(void)
472 {
473 if (errno == ETIMEDOUT)
474 return USB_RET_NAK;
475 else
476 return USB_RET_STALL;
477 }
478
479 static int usb_host_set_address(USBHostDevice *s, int addr)
480 {
481 dprintf("husb: ctrl set addr %u\n", addr);
482 s->dev.addr = addr;
483 return 0;
484 }
485
486 static int usb_host_set_config(USBHostDevice *s, int config)
487 {
488 usb_host_release_interfaces(s);
489
490 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
491
492 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
493
494 if (ret < 0)
495 return ctrl_error();
496
497 usb_host_claim_interfaces(s, config);
498 return 0;
499 }
500
501 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
502 {
503 struct usbdevfs_setinterface si;
504 int ret;
505
506 si.interface = iface;
507 si.altsetting = alt;
508 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
509
510 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
511 iface, alt, ret, errno);
512
513 if (ret < 0)
514 return ctrl_error();
515
516 usb_linux_update_endp_table(s);
517 return 0;
518 }
519
520 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
521 {
522 struct usbdevfs_urb *urb;
523 AsyncURB *aurb;
524 int ret, value, index;
525 int buffer_len;
526
527 /*
528 * Process certain standard device requests.
529 * These are infrequent and are processed synchronously.
530 */
531 value = le16_to_cpu(s->ctrl.req.wValue);
532 index = le16_to_cpu(s->ctrl.req.wIndex);
533
534 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
535 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
536 s->ctrl.len);
537
538 if (s->ctrl.req.bRequestType == 0) {
539 switch (s->ctrl.req.bRequest) {
540 case USB_REQ_SET_ADDRESS:
541 return usb_host_set_address(s, value);
542
543 case USB_REQ_SET_CONFIGURATION:
544 return usb_host_set_config(s, value & 0xff);
545 }
546 }
547
548 if (s->ctrl.req.bRequestType == 1 &&
549 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE)
550 return usb_host_set_interface(s, index, value);
551
552 /* The rest are asynchronous */
553
554 buffer_len = 8 + s->ctrl.len;
555 if (buffer_len > sizeof(s->ctrl.buffer)) {
556 fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
557 buffer_len, sizeof(s->ctrl.buffer));
558 return USB_RET_STALL;
559 }
560
561 aurb = async_alloc();
562 aurb->hdev = s;
563 aurb->packet = p;
564
565 /*
566 * Setup ctrl transfer.
567 *
568 * s->ctrl is layed out such that data buffer immediately follows
569 * 'req' struct which is exactly what usbdevfs expects.
570 */
571 urb = &aurb->urb;
572
573 urb->type = USBDEVFS_URB_TYPE_CONTROL;
574 urb->endpoint = p->devep;
575
576 urb->buffer = &s->ctrl.req;
577 urb->buffer_length = buffer_len;
578
579 urb->usercontext = s;
580
581 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
582
583 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
584
585 if (ret < 0) {
586 dprintf("husb: submit failed. errno %d\n", errno);
587 async_free(aurb);
588
589 switch(errno) {
590 case ETIMEDOUT:
591 return USB_RET_NAK;
592 case EPIPE:
593 default:
594 return USB_RET_STALL;
595 }
596 }
597
598 usb_defer_packet(p, async_cancel, aurb);
599 return USB_RET_ASYNC;
600 }
601
602 static int do_token_setup(USBDevice *dev, USBPacket *p)
603 {
604 USBHostDevice *s = (USBHostDevice *) dev;
605 int ret = 0;
606
607 if (p->len != 8)
608 return USB_RET_STALL;
609
610 memcpy(&s->ctrl.req, p->data, 8);
611 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
612 s->ctrl.offset = 0;
613 s->ctrl.state = CTRL_STATE_SETUP;
614
615 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
616 ret = usb_host_handle_control(s, p);
617 if (ret < 0)
618 return ret;
619
620 if (ret < s->ctrl.len)
621 s->ctrl.len = ret;
622 s->ctrl.state = CTRL_STATE_DATA;
623 } else {
624 if (s->ctrl.len == 0)
625 s->ctrl.state = CTRL_STATE_ACK;
626 else
627 s->ctrl.state = CTRL_STATE_DATA;
628 }
629
630 return ret;
631 }
632
633 static int do_token_in(USBDevice *dev, USBPacket *p)
634 {
635 USBHostDevice *s = (USBHostDevice *) dev;
636 int ret = 0;
637
638 if (p->devep != 0)
639 return usb_host_handle_data(s, p);
640
641 switch(s->ctrl.state) {
642 case CTRL_STATE_ACK:
643 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
644 ret = usb_host_handle_control(s, p);
645 if (ret == USB_RET_ASYNC)
646 return USB_RET_ASYNC;
647
648 s->ctrl.state = CTRL_STATE_IDLE;
649 return ret > 0 ? 0 : ret;
650 }
651
652 return 0;
653
654 case CTRL_STATE_DATA:
655 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
656 int len = s->ctrl.len - s->ctrl.offset;
657 if (len > p->len)
658 len = p->len;
659 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
660 s->ctrl.offset += len;
661 if (s->ctrl.offset >= s->ctrl.len)
662 s->ctrl.state = CTRL_STATE_ACK;
663 return len;
664 }
665
666 s->ctrl.state = CTRL_STATE_IDLE;
667 return USB_RET_STALL;
668
669 default:
670 return USB_RET_STALL;
671 }
672 }
673
674 static int do_token_out(USBDevice *dev, USBPacket *p)
675 {
676 USBHostDevice *s = (USBHostDevice *) dev;
677
678 if (p->devep != 0)
679 return usb_host_handle_data(s, p);
680
681 switch(s->ctrl.state) {
682 case CTRL_STATE_ACK:
683 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
684 s->ctrl.state = CTRL_STATE_IDLE;
685 /* transfer OK */
686 } else {
687 /* ignore additional output */
688 }
689 return 0;
690
691 case CTRL_STATE_DATA:
692 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
693 int len = s->ctrl.len - s->ctrl.offset;
694 if (len > p->len)
695 len = p->len;
696 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
697 s->ctrl.offset += len;
698 if (s->ctrl.offset >= s->ctrl.len)
699 s->ctrl.state = CTRL_STATE_ACK;
700 return len;
701 }
702
703 s->ctrl.state = CTRL_STATE_IDLE;
704 return USB_RET_STALL;
705
706 default:
707 return USB_RET_STALL;
708 }
709 }
710
711 /*
712 * Packet handler.
713 * Called by the HC (host controller).
714 *
715 * Returns length of the transaction or one of the USB_RET_XXX codes.
716 */
717 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
718 {
719 switch(p->pid) {
720 case USB_MSG_ATTACH:
721 s->state = USB_STATE_ATTACHED;
722 return 0;
723
724 case USB_MSG_DETACH:
725 s->state = USB_STATE_NOTATTACHED;
726 return 0;
727
728 case USB_MSG_RESET:
729 s->remote_wakeup = 0;
730 s->addr = 0;
731 s->state = USB_STATE_DEFAULT;
732 s->info->handle_reset(s);
733 return 0;
734 }
735
736 /* Rest of the PIDs must match our address */
737 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
738 return USB_RET_NODEV;
739
740 switch (p->pid) {
741 case USB_TOKEN_SETUP:
742 return do_token_setup(s, p);
743
744 case USB_TOKEN_IN:
745 return do_token_in(s, p);
746
747 case USB_TOKEN_OUT:
748 return do_token_out(s, p);
749
750 default:
751 return USB_RET_STALL;
752 }
753 }
754
755 /* returns 1 on problem encountered or 0 for success */
756 static int usb_linux_update_endp_table(USBHostDevice *s)
757 {
758 uint8_t *descriptors;
759 uint8_t devep, type, configuration, alt_interface;
760 struct usb_ctrltransfer ct;
761 int interface, ret, length, i;
762
763 ct.bRequestType = USB_DIR_IN;
764 ct.bRequest = USB_REQ_GET_CONFIGURATION;
765 ct.wValue = 0;
766 ct.wIndex = 0;
767 ct.wLength = 1;
768 ct.data = &configuration;
769 ct.timeout = 50;
770
771 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
772 if (ret < 0) {
773 perror("usb_linux_update_endp_table");
774 return 1;
775 }
776
777 /* in address state */
778 if (configuration == 0)
779 return 1;
780
781 /* get the desired configuration, interface, and endpoint descriptors
782 * from device description */
783 descriptors = &s->descr[18];
784 length = s->descr_len - 18;
785 i = 0;
786
787 if (descriptors[i + 1] != USB_DT_CONFIG ||
788 descriptors[i + 5] != configuration) {
789 dprintf("invalid descriptor data - configuration\n");
790 return 1;
791 }
792 i += descriptors[i];
793
794 while (i < length) {
795 if (descriptors[i + 1] != USB_DT_INTERFACE ||
796 (descriptors[i + 1] == USB_DT_INTERFACE &&
797 descriptors[i + 4] == 0)) {
798 i += descriptors[i];
799 continue;
800 }
801
802 interface = descriptors[i + 2];
803
804 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
805 ct.bRequest = USB_REQ_GET_INTERFACE;
806 ct.wValue = 0;
807 ct.wIndex = interface;
808 ct.wLength = 1;
809 ct.data = &alt_interface;
810 ct.timeout = 50;
811
812 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
813 if (ret < 0) {
814 alt_interface = interface;
815 }
816
817 /* the current interface descriptor is the active interface
818 * and has endpoints */
819 if (descriptors[i + 3] != alt_interface) {
820 i += descriptors[i];
821 continue;
822 }
823
824 /* advance to the endpoints */
825 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
826 i += descriptors[i];
827
828 if (i >= length)
829 break;
830
831 while (i < length) {
832 if (descriptors[i + 1] != USB_DT_ENDPOINT)
833 break;
834
835 devep = descriptors[i + 2];
836 switch (descriptors[i + 3] & 0x3) {
837 case 0x00:
838 type = USBDEVFS_URB_TYPE_CONTROL;
839 break;
840 case 0x01:
841 type = USBDEVFS_URB_TYPE_ISO;
842 break;
843 case 0x02:
844 type = USBDEVFS_URB_TYPE_BULK;
845 break;
846 case 0x03:
847 type = USBDEVFS_URB_TYPE_INTERRUPT;
848 break;
849 default:
850 dprintf("usb_host: malformed endpoint type\n");
851 type = USBDEVFS_URB_TYPE_BULK;
852 }
853 s->endp_table[(devep & 0xf) - 1].type = type;
854 s->endp_table[(devep & 0xf) - 1].halted = 0;
855
856 i += descriptors[i];
857 }
858 }
859 return 0;
860 }
861
862 static int usb_host_open(USBHostDevice *dev, int bus_num,
863 int addr, const char *prod_name)
864 {
865 int fd = -1, ret;
866 struct usbdevfs_connectinfo ci;
867 char buf[1024];
868
869 if (dev->fd != -1)
870 goto fail;
871
872 printf("husb: open device %d.%d\n", bus_num, addr);
873
874 if (!usb_host_device_path) {
875 perror("husb: USB Host Device Path not set");
876 goto fail;
877 }
878 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
879 bus_num, addr);
880 fd = open(buf, O_RDWR | O_NONBLOCK);
881 if (fd < 0) {
882 perror(buf);
883 goto fail;
884 }
885 dprintf("husb: opened %s\n", buf);
886
887 dev->bus_num = bus_num;
888 dev->addr = addr;
889 dev->fd = fd;
890
891 /* read the device description */
892 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
893 if (dev->descr_len <= 0) {
894 perror("husb: reading device data failed");
895 goto fail;
896 }
897
898 #ifdef DEBUG
899 {
900 int x;
901 printf("=== begin dumping device descriptor data ===\n");
902 for (x = 0; x < dev->descr_len; x++)
903 printf("%02x ", dev->descr[x]);
904 printf("\n=== end dumping device descriptor data ===\n");
905 }
906 #endif
907
908
909 /*
910 * Initial configuration is -1 which makes us claim first
911 * available config. We used to start with 1, which does not
912 * always work. I've seen devices where first config starts
913 * with 2.
914 */
915 if (!usb_host_claim_interfaces(dev, -1))
916 goto fail;
917
918 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
919 if (ret < 0) {
920 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
921 goto fail;
922 }
923
924 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
925
926 ret = usb_linux_update_endp_table(dev);
927 if (ret)
928 goto fail;
929
930 if (ci.slow)
931 dev->dev.speed = USB_SPEED_LOW;
932 else
933 dev->dev.speed = USB_SPEED_HIGH;
934
935 if (!prod_name || prod_name[0] == '\0')
936 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
937 "host:%d.%d", bus_num, addr);
938 else
939 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
940 prod_name);
941
942 /* USB devio uses 'write' flag to check for async completions */
943 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
944
945 usb_device_attach(&dev->dev);
946 return 0;
947
948 fail:
949 dev->fd = -1;
950 if (fd != -1)
951 close(fd);
952 return -1;
953 }
954
955 static int usb_host_close(USBHostDevice *dev)
956 {
957 if (dev->fd == -1)
958 return -1;
959
960 qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
961 dev->closing = 1;
962 async_complete(dev);
963 dev->closing = 0;
964 usb_device_detach(&dev->dev);
965 close(dev->fd);
966 dev->fd = -1;
967 return 0;
968 }
969
970 static int usb_host_initfn(USBDevice *dev)
971 {
972 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
973
974 dev->auto_attach = 0;
975 s->fd = -1;
976 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
977 usb_host_auto_check(NULL);
978 return 0;
979 }
980
981 static struct USBDeviceInfo usb_host_dev_info = {
982 .qdev.name = "USB Host Device",
983 .qdev.alias = "usb-host",
984 .qdev.size = sizeof(USBHostDevice),
985 .init = usb_host_initfn,
986 .handle_packet = usb_host_handle_packet,
987 .handle_reset = usb_host_handle_reset,
988 .handle_destroy = usb_host_handle_destroy,
989 .usbdevice_name = "host",
990 .usbdevice_init = usb_host_device_open,
991 .qdev.props = (Property[]) {
992 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
993 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
994 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
995 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
996 DEFINE_PROP_END_OF_LIST(),
997 },
998 };
999
1000 static void usb_host_register_devices(void)
1001 {
1002 usb_qdev_register(&usb_host_dev_info);
1003 }
1004 device_init(usb_host_register_devices)
1005
1006 USBDevice *usb_host_device_open(const char *devname)
1007 {
1008 struct USBAutoFilter filter = { 0, 0, 0, 0 };
1009 USBDevice *dev;
1010 USBHostDevice *s;
1011 char *p;
1012
1013 dev = usb_create(NULL /* FIXME */, "USB Host Device");
1014 s = DO_UPCAST(USBHostDevice, dev, dev);
1015
1016 if (strstr(devname, "auto:")) {
1017 if (parse_filter(devname+5, &filter) < 0)
1018 goto fail;
1019 } else {
1020 if ((p = strchr(devname, '.'))) {
1021 filter.bus_num = strtoul(devname, NULL, 0);
1022 filter.addr = strtoul(devname, NULL, 0);
1023 } else if ((p = strchr(devname, ':'))) {
1024 filter.vendor_id = strtoul(devname, NULL, 16);
1025 filter.product_id = strtoul(devname, NULL, 16);
1026 } else {
1027 goto fail;
1028 }
1029 }
1030
1031 qdev_prop_set_uint32(&dev->qdev, "bus", filter.bus_num);
1032 qdev_prop_set_uint32(&dev->qdev, "addr", filter.addr);
1033 qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
1034 qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
1035 qdev_init(&dev->qdev);
1036 return dev;
1037
1038 fail:
1039 qdev_free(&dev->qdev);
1040 return NULL;
1041 }
1042
1043 int usb_host_device_close(const char *devname)
1044 {
1045 #if 0
1046 char product_name[PRODUCT_NAME_SZ];
1047 int bus_num, addr;
1048 USBHostDevice *s;
1049
1050 if (strstr(devname, "auto:"))
1051 return usb_host_auto_del(devname);
1052
1053 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1054 devname) < 0)
1055 return -1;
1056
1057 s = hostdev_find(bus_num, addr);
1058 if (s) {
1059 usb_device_delete_addr(s->bus_num, s->dev.addr);
1060 return 0;
1061 }
1062 #endif
1063
1064 return -1;
1065 }
1066
1067 static int get_tag_value(char *buf, int buf_size,
1068 const char *str, const char *tag,
1069 const char *stopchars)
1070 {
1071 const char *p;
1072 char *q;
1073 p = strstr(str, tag);
1074 if (!p)
1075 return -1;
1076 p += strlen(tag);
1077 while (qemu_isspace(*p))
1078 p++;
1079 q = buf;
1080 while (*p != '\0' && !strchr(stopchars, *p)) {
1081 if ((q - buf) < (buf_size - 1))
1082 *q++ = *p;
1083 p++;
1084 }
1085 *q = '\0';
1086 return q - buf;
1087 }
1088
1089 /*
1090 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1091 * host's USB devices. This is legacy support since many distributions
1092 * are moving to /sys/bus/usb
1093 */
1094 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1095 {
1096 FILE *f = NULL;
1097 char line[1024];
1098 char buf[1024];
1099 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1100 char product_name[512];
1101 int ret = 0;
1102
1103 if (!usb_host_device_path) {
1104 perror("husb: USB Host Device Path not set");
1105 goto the_end;
1106 }
1107 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1108 f = fopen(line, "r");
1109 if (!f) {
1110 perror("husb: cannot open devices file");
1111 goto the_end;
1112 }
1113
1114 device_count = 0;
1115 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1116 for(;;) {
1117 if (fgets(line, sizeof(line), f) == NULL)
1118 break;
1119 if (strlen(line) > 0)
1120 line[strlen(line) - 1] = '\0';
1121 if (line[0] == 'T' && line[1] == ':') {
1122 if (device_count && (vendor_id || product_id)) {
1123 /* New device. Add the previously discovered device. */
1124 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1125 product_id, product_name, speed);
1126 if (ret)
1127 goto the_end;
1128 }
1129 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
1130 goto fail;
1131 bus_num = atoi(buf);
1132 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
1133 goto fail;
1134 addr = atoi(buf);
1135 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
1136 goto fail;
1137 if (!strcmp(buf, "480"))
1138 speed = USB_SPEED_HIGH;
1139 else if (!strcmp(buf, "1.5"))
1140 speed = USB_SPEED_LOW;
1141 else
1142 speed = USB_SPEED_FULL;
1143 product_name[0] = '\0';
1144 class_id = 0xff;
1145 device_count++;
1146 product_id = 0;
1147 vendor_id = 0;
1148 } else if (line[0] == 'P' && line[1] == ':') {
1149 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
1150 goto fail;
1151 vendor_id = strtoul(buf, NULL, 16);
1152 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
1153 goto fail;
1154 product_id = strtoul(buf, NULL, 16);
1155 } else if (line[0] == 'S' && line[1] == ':') {
1156 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
1157 goto fail;
1158 pstrcpy(product_name, sizeof(product_name), buf);
1159 } else if (line[0] == 'D' && line[1] == ':') {
1160 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
1161 goto fail;
1162 class_id = strtoul(buf, NULL, 16);
1163 }
1164 fail: ;
1165 }
1166 if (device_count && (vendor_id || product_id)) {
1167 /* Add the last device. */
1168 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1169 product_id, product_name, speed);
1170 }
1171 the_end:
1172 if (f)
1173 fclose(f);
1174 return ret;
1175 }
1176
1177 /*
1178 * Read sys file-system device file
1179 *
1180 * @line address of buffer to put file contents in
1181 * @line_size size of line
1182 * @device_file path to device file (printf format string)
1183 * @device_name device being opened (inserted into device_file)
1184 *
1185 * @return 0 failed, 1 succeeded ('line' contains data)
1186 */
1187 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
1188 {
1189 #if 0
1190 Monitor *mon = cur_mon;
1191 #endif
1192 FILE *f;
1193 int ret = 0;
1194 char filename[PATH_MAX];
1195
1196 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
1197 device_file);
1198 f = fopen(filename, "r");
1199 if (f) {
1200 fgets(line, line_size, f);
1201 fclose(f);
1202 ret = 1;
1203 #if 0
1204 } else {
1205 monitor_printf(mon, "husb: could not open %s\n", filename);
1206 #endif
1207 }
1208
1209 return ret;
1210 }
1211
1212 /*
1213 * Use /sys/bus/usb/devices/ directory to determine host's USB
1214 * devices.
1215 *
1216 * This code is based on Robert Schiele's original patches posted to
1217 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1218 */
1219 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1220 {
1221 DIR *dir = NULL;
1222 char line[1024];
1223 int bus_num, addr, speed, class_id, product_id, vendor_id;
1224 int ret = 0;
1225 char product_name[512];
1226 struct dirent *de;
1227
1228 dir = opendir(USBSYSBUS_PATH "/devices");
1229 if (!dir) {
1230 perror("husb: cannot open devices directory");
1231 goto the_end;
1232 }
1233
1234 while ((de = readdir(dir))) {
1235 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1236 char *tmpstr = de->d_name;
1237 if (!strncmp(de->d_name, "usb", 3))
1238 tmpstr += 3;
1239 bus_num = atoi(tmpstr);
1240
1241 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name))
1242 goto the_end;
1243 if (sscanf(line, "%d", &addr) != 1)
1244 goto the_end;
1245
1246 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1247 de->d_name))
1248 goto the_end;
1249 if (sscanf(line, "%x", &class_id) != 1)
1250 goto the_end;
1251
1252 if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name))
1253 goto the_end;
1254 if (sscanf(line, "%x", &vendor_id) != 1)
1255 goto the_end;
1256
1257 if (!usb_host_read_file(line, sizeof(line), "idProduct",
1258 de->d_name))
1259 goto the_end;
1260 if (sscanf(line, "%x", &product_id) != 1)
1261 goto the_end;
1262
1263 if (!usb_host_read_file(line, sizeof(line), "product",
1264 de->d_name)) {
1265 *product_name = 0;
1266 } else {
1267 if (strlen(line) > 0)
1268 line[strlen(line) - 1] = '\0';
1269 pstrcpy(product_name, sizeof(product_name), line);
1270 }
1271
1272 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name))
1273 goto the_end;
1274 if (!strcmp(line, "480\n"))
1275 speed = USB_SPEED_HIGH;
1276 else if (!strcmp(line, "1.5\n"))
1277 speed = USB_SPEED_LOW;
1278 else
1279 speed = USB_SPEED_FULL;
1280
1281 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1282 product_id, product_name, speed);
1283 if (ret)
1284 goto the_end;
1285 }
1286 }
1287 the_end:
1288 if (dir)
1289 closedir(dir);
1290 return ret;
1291 }
1292
1293 /*
1294 * Determine how to access the host's USB devices and call the
1295 * specific support function.
1296 */
1297 static int usb_host_scan(void *opaque, USBScanFunc *func)
1298 {
1299 Monitor *mon = cur_mon;
1300 FILE *f = NULL;
1301 DIR *dir = NULL;
1302 int ret = 0;
1303 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1304 char devpath[PATH_MAX];
1305
1306 /* only check the host once */
1307 if (!usb_fs_type) {
1308 dir = opendir(USBSYSBUS_PATH "/devices");
1309 if (dir) {
1310 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1311 strcpy(devpath, USBDEVBUS_PATH);
1312 usb_fs_type = USB_FS_SYS;
1313 closedir(dir);
1314 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1315 goto found_devices;
1316 }
1317 f = fopen(USBPROCBUS_PATH "/devices", "r");
1318 if (f) {
1319 /* devices found in /proc/bus/usb/ */
1320 strcpy(devpath, USBPROCBUS_PATH);
1321 usb_fs_type = USB_FS_PROC;
1322 fclose(f);
1323 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1324 goto found_devices;
1325 }
1326 /* try additional methods if an access method hasn't been found yet */
1327 f = fopen(USBDEVBUS_PATH "/devices", "r");
1328 if (f) {
1329 /* devices found in /dev/bus/usb/ */
1330 strcpy(devpath, USBDEVBUS_PATH);
1331 usb_fs_type = USB_FS_DEV;
1332 fclose(f);
1333 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1334 goto found_devices;
1335 }
1336 found_devices:
1337 if (!usb_fs_type) {
1338 monitor_printf(mon, "husb: unable to access USB devices\n");
1339 return -ENOENT;
1340 }
1341
1342 /* the module setting (used later for opening devices) */
1343 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1344 strcpy(usb_host_device_path, devpath);
1345 monitor_printf(mon, "husb: using %s file-system with %s\n",
1346 fs_type[usb_fs_type], usb_host_device_path);
1347 }
1348
1349 switch (usb_fs_type) {
1350 case USB_FS_PROC:
1351 case USB_FS_DEV:
1352 ret = usb_host_scan_dev(opaque, func);
1353 break;
1354 case USB_FS_SYS:
1355 ret = usb_host_scan_sys(opaque, func);
1356 break;
1357 default:
1358 ret = -EINVAL;
1359 break;
1360 }
1361 return ret;
1362 }
1363
1364 static QEMUTimer *usb_auto_timer;
1365
1366 static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1367 int class_id, int vendor_id, int product_id,
1368 const char *product_name, int speed)
1369 {
1370 struct USBAutoFilter *f;
1371 struct USBHostDevice *s;
1372
1373 /* Ignore hubs */
1374 if (class_id == 9)
1375 return 0;
1376
1377 QTAILQ_FOREACH(s, &hostdevs, next) {
1378 f = &s->match;
1379
1380 if (f->bus_num > 0 && f->bus_num != bus_num)
1381 continue;
1382
1383 if (f->addr > 0 && f->addr != addr)
1384 continue;
1385
1386 if (f->vendor_id > 0 && f->vendor_id != vendor_id)
1387 continue;
1388
1389 if (f->product_id > 0 && f->product_id != product_id)
1390 continue;
1391
1392 /* We got a match */
1393
1394 /* Already attached ? */
1395 if (s->fd != -1)
1396 return 0;
1397
1398 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1399
1400 usb_host_open(s, bus_num, addr, product_name);
1401 }
1402
1403 return 0;
1404 }
1405
1406 static void usb_host_auto_check(void *unused)
1407 {
1408 struct USBHostDevice *s;
1409 int unconnected = 0;
1410
1411 usb_host_scan(NULL, usb_host_auto_scan);
1412
1413 QTAILQ_FOREACH(s, &hostdevs, next) {
1414 if (s->fd == -1)
1415 unconnected++;
1416 }
1417
1418 if (unconnected == 0) {
1419 /* nothing to watch */
1420 if (usb_auto_timer)
1421 qemu_del_timer(usb_auto_timer);
1422 return;
1423 }
1424
1425 if (!usb_auto_timer) {
1426 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
1427 if (!usb_auto_timer)
1428 return;
1429 }
1430 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1431 }
1432
1433 /*
1434 * Autoconnect filter
1435 * Format:
1436 * auto:bus:dev[:vid:pid]
1437 * auto:bus.dev[:vid:pid]
1438 *
1439 * bus - bus number (dec, * means any)
1440 * dev - device number (dec, * means any)
1441 * vid - vendor id (hex, * means any)
1442 * pid - product id (hex, * means any)
1443 *
1444 * See 'lsusb' output.
1445 */
1446 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1447 {
1448 enum { BUS, DEV, VID, PID, DONE };
1449 const char *p = spec;
1450 int i;
1451
1452 f->bus_num = -1;
1453 f->addr = -1;
1454 f->vendor_id = -1;
1455 f->product_id = -1;
1456
1457 for (i = BUS; i < DONE; i++) {
1458 p = strpbrk(p, ":.");
1459 if (!p) break;
1460 p++;
1461
1462 if (*p == '*')
1463 continue;
1464
1465 switch(i) {
1466 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1467 case DEV: f->addr = strtol(p, NULL, 10); break;
1468 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1469 case PID: f->product_id = strtol(p, NULL, 16); break;
1470 }
1471 }
1472
1473 if (i < DEV) {
1474 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1475 return -1;
1476 }
1477
1478 return 0;
1479 }
1480
1481 /**********************/
1482 /* USB host device info */
1483
1484 struct usb_class_info {
1485 int class;
1486 const char *class_name;
1487 };
1488
1489 static const struct usb_class_info usb_class_info[] = {
1490 { USB_CLASS_AUDIO, "Audio"},
1491 { USB_CLASS_COMM, "Communication"},
1492 { USB_CLASS_HID, "HID"},
1493 { USB_CLASS_HUB, "Hub" },
1494 { USB_CLASS_PHYSICAL, "Physical" },
1495 { USB_CLASS_PRINTER, "Printer" },
1496 { USB_CLASS_MASS_STORAGE, "Storage" },
1497 { USB_CLASS_CDC_DATA, "Data" },
1498 { USB_CLASS_APP_SPEC, "Application Specific" },
1499 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1500 { USB_CLASS_STILL_IMAGE, "Still Image" },
1501 { USB_CLASS_CSCID, "Smart Card" },
1502 { USB_CLASS_CONTENT_SEC, "Content Security" },
1503 { -1, NULL }
1504 };
1505
1506 static const char *usb_class_str(uint8_t class)
1507 {
1508 const struct usb_class_info *p;
1509 for(p = usb_class_info; p->class != -1; p++) {
1510 if (p->class == class)
1511 break;
1512 }
1513 return p->class_name;
1514 }
1515
1516 static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
1517 int vendor_id, int product_id,
1518 const char *product_name,
1519 int speed)
1520 {
1521 const char *class_str, *speed_str;
1522
1523 switch(speed) {
1524 case USB_SPEED_LOW:
1525 speed_str = "1.5";
1526 break;
1527 case USB_SPEED_FULL:
1528 speed_str = "12";
1529 break;
1530 case USB_SPEED_HIGH:
1531 speed_str = "480";
1532 break;
1533 default:
1534 speed_str = "?";
1535 break;
1536 }
1537
1538 monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
1539 bus_num, addr, speed_str);
1540 class_str = usb_class_str(class_id);
1541 if (class_str)
1542 monitor_printf(mon, " %s:", class_str);
1543 else
1544 monitor_printf(mon, " Class %02x:", class_id);
1545 monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
1546 if (product_name[0] != '\0')
1547 monitor_printf(mon, ", %s", product_name);
1548 monitor_printf(mon, "\n");
1549 }
1550
1551 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1552 int class_id,
1553 int vendor_id, int product_id,
1554 const char *product_name,
1555 int speed)
1556 {
1557 Monitor *mon = opaque;
1558
1559 usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
1560 product_name, speed);
1561 return 0;
1562 }
1563
1564 static void dec2str(int val, char *str, size_t size)
1565 {
1566 if (val == 0)
1567 snprintf(str, size, "*");
1568 else
1569 snprintf(str, size, "%d", val);
1570 }
1571
1572 static void hex2str(int val, char *str, size_t size)
1573 {
1574 if (val == 0)
1575 snprintf(str, size, "*");
1576 else
1577 snprintf(str, size, "%04x", val);
1578 }
1579
1580 void usb_host_info(Monitor *mon)
1581 {
1582 struct USBAutoFilter *f;
1583 struct USBHostDevice *s;
1584
1585 usb_host_scan(mon, usb_host_info_device);
1586
1587 if (QTAILQ_EMPTY(&hostdevs))
1588 return;
1589 monitor_printf(mon, " Auto filters:\n");
1590 QTAILQ_FOREACH(s, &hostdevs, next) {
1591 char bus[10], addr[10], vid[10], pid[10];
1592 f = &s->match;
1593 dec2str(f->bus_num, bus, sizeof(bus));
1594 dec2str(f->addr, addr, sizeof(addr));
1595 hex2str(f->vendor_id, vid, sizeof(vid));
1596 hex2str(f->product_id, pid, sizeof(pid));
1597 monitor_printf(mon, " Device %s.%s ID %s:%s\n",
1598 bus, addr, vid, pid);
1599 }
1600 }
Anthony Liguori's QEMU queue