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vmport: convert to qdev
[qemu/mdroth.git] / usb-linux.c
blobccf70734e3f3b3cf80d31b9bda4cfb2a6e790158
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 #include "sysemu.h"
37
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 devpath,
66 int class_id, int vendor_id, int product_id,
67 const char *product_name, int speed);
68
69 //#define DEBUG
70
71 #ifdef DEBUG
72 #define DPRINTF printf
73 #else
74 #define DPRINTF(...)
75 #endif
76
77 #define USBDBG_DEVOPENED "husb: opened %s/devices\n"
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[8192];
118 };
119
120 struct USBAutoFilter {
121 uint32_t bus_num;
122 uint32_t addr;
123 uint32_t vendor_id;
124 uint32_t product_id;
125 };
126
127 typedef struct USBHostDevice {
128 USBDevice dev;
129 int fd;
130
131 uint8_t descr[1024];
132 int descr_len;
133 int configuration;
134 int ninterfaces;
135 int closing;
136 Notifier exit;
137
138 struct ctrl_struct ctrl;
139 struct endp_data endp_table[MAX_ENDPOINTS];
140
141 /* Host side address */
142 int bus_num;
143 int addr;
144 int devpath;
145 struct USBAutoFilter match;
146
147 QTAILQ_ENTRY(USBHostDevice) next;
148 } USBHostDevice;
149
150 static QTAILQ_HEAD(, USBHostDevice) hostdevs = QTAILQ_HEAD_INITIALIZER(hostdevs);
151
152 static int usb_host_close(USBHostDevice *dev);
153 static int parse_filter(const char *spec, struct USBAutoFilter *f);
154 static void usb_host_auto_check(void *unused);
155 static int usb_host_read_file(char *line, size_t line_size,
156 const char *device_file, const char *device_name);
157
158 static int is_isoc(USBHostDevice *s, int ep)
159 {
160 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
161 }
162
163 static int is_halted(USBHostDevice *s, int ep)
164 {
165 return s->endp_table[ep - 1].halted;
166 }
167
168 static void clear_halt(USBHostDevice *s, int ep)
169 {
170 s->endp_table[ep - 1].halted = 0;
171 }
172
173 static void set_halt(USBHostDevice *s, int ep)
174 {
175 s->endp_table[ep - 1].halted = 1;
176 }
177
178 /*
179 * Async URB state.
180 * We always allocate one isoc descriptor even for bulk transfers
181 * to simplify allocation and casts.
182 */
183 typedef struct AsyncURB
184 {
185 struct usbdevfs_urb urb;
186 struct usbdevfs_iso_packet_desc isocpd;
187
188 USBPacket *packet;
189 USBHostDevice *hdev;
190 } AsyncURB;
191
192 static AsyncURB *async_alloc(void)
193 {
194 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
195 }
196
197 static void async_free(AsyncURB *aurb)
198 {
199 qemu_free(aurb);
200 }
201
202 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
203 {
204 switch(s->ctrl.state) {
205 case CTRL_STATE_SETUP:
206 if (p->len < s->ctrl.len)
207 s->ctrl.len = p->len;
208 s->ctrl.state = CTRL_STATE_DATA;
209 p->len = 8;
210 break;
211
212 case CTRL_STATE_ACK:
213 s->ctrl.state = CTRL_STATE_IDLE;
214 p->len = 0;
215 break;
216
217 default:
218 break;
219 }
220 }
221
222 static void async_complete(void *opaque)
223 {
224 USBHostDevice *s = opaque;
225 AsyncURB *aurb;
226
227 while (1) {
228 USBPacket *p;
229
230 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
231 if (r < 0) {
232 if (errno == EAGAIN) {
233 return;
234 }
235 if (errno == ENODEV && !s->closing) {
236 printf("husb: device %d.%d disconnected\n",
237 s->bus_num, s->addr);
238 usb_host_close(s);
239 usb_host_auto_check(NULL);
240 return;
241 }
242
243 DPRINTF("husb: async. reap urb failed errno %d\n", errno);
244 return;
245 }
246
247 p = aurb->packet;
248
249 DPRINTF("husb: async completed. aurb %p status %d alen %d\n",
250 aurb, aurb->urb.status, aurb->urb.actual_length);
251
252 if (p) {
253 switch (aurb->urb.status) {
254 case 0:
255 p->len = aurb->urb.actual_length;
256 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL) {
257 async_complete_ctrl(s, p);
258 }
259 break;
260
261 case -EPIPE:
262 set_halt(s, p->devep);
263 p->len = USB_RET_STALL;
264 break;
265
266 default:
267 p->len = USB_RET_NAK;
268 break;
269 }
270
271 usb_packet_complete(p);
272 }
273
274 async_free(aurb);
275 }
276 }
277
278 static void async_cancel(USBPacket *unused, void *opaque)
279 {
280 AsyncURB *aurb = opaque;
281 USBHostDevice *s = aurb->hdev;
282
283 DPRINTF("husb: async cancel. aurb %p\n", aurb);
284
285 /* Mark it as dead (see async_complete above) */
286 aurb->packet = NULL;
287
288 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
289 if (r < 0) {
290 DPRINTF("husb: async. discard urb failed errno %d\n", errno);
291 }
292 }
293
294 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
295 {
296 int dev_descr_len, config_descr_len;
297 int interface, nb_interfaces;
298 int ret, i;
299
300 if (configuration == 0) /* address state - ignore */
301 return 1;
302
303 DPRINTF("husb: claiming interfaces. config %d\n", configuration);
304
305 i = 0;
306 dev_descr_len = dev->descr[0];
307 if (dev_descr_len > dev->descr_len) {
308 goto fail;
309 }
310
311 i += dev_descr_len;
312 while (i < dev->descr_len) {
313 DPRINTF("husb: i is %d, descr_len is %d, dl %d, dt %d\n",
314 i, dev->descr_len,
315 dev->descr[i], dev->descr[i+1]);
316
317 if (dev->descr[i+1] != USB_DT_CONFIG) {
318 i += dev->descr[i];
319 continue;
320 }
321 config_descr_len = dev->descr[i];
322
323 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
324
325 if (configuration < 0 || configuration == dev->descr[i + 5]) {
326 configuration = dev->descr[i + 5];
327 break;
328 }
329
330 i += config_descr_len;
331 }
332
333 if (i >= dev->descr_len) {
334 fprintf(stderr,
335 "husb: update iface failed. no matching configuration\n");
336 goto fail;
337 }
338 nb_interfaces = dev->descr[i + 4];
339
340 #ifdef USBDEVFS_DISCONNECT
341 /* earlier Linux 2.4 do not support that */
342 {
343 struct usbdevfs_ioctl ctrl;
344 for (interface = 0; interface < nb_interfaces; interface++) {
345 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
346 ctrl.ifno = interface;
347 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
348 if (ret < 0 && errno != ENODATA) {
349 perror("USBDEVFS_DISCONNECT");
350 goto fail;
351 }
352 }
353 }
354 #endif
355
356 /* XXX: only grab if all interfaces are free */
357 for (interface = 0; interface < nb_interfaces; interface++) {
358 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
359 if (ret < 0) {
360 if (errno == EBUSY) {
361 printf("husb: update iface. device already grabbed\n");
362 } else {
363 perror("husb: failed to claim interface");
364 }
365 fail:
366 return 0;
367 }
368 }
369
370 printf("husb: %d interfaces claimed for configuration %d\n",
371 nb_interfaces, configuration);
372
373 dev->ninterfaces = nb_interfaces;
374 dev->configuration = configuration;
375 return 1;
376 }
377
378 static int usb_host_release_interfaces(USBHostDevice *s)
379 {
380 int ret, i;
381
382 DPRINTF("husb: releasing interfaces\n");
383
384 for (i = 0; i < s->ninterfaces; i++) {
385 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
386 if (ret < 0) {
387 perror("husb: failed to release interface");
388 return 0;
389 }
390 }
391
392 return 1;
393 }
394
395 static void usb_host_handle_reset(USBDevice *dev)
396 {
397 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
398
399 DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
400
401 ioctl(s->fd, USBDEVFS_RESET);
402
403 usb_host_claim_interfaces(s, s->configuration);
404 }
405
406 static void usb_host_handle_destroy(USBDevice *dev)
407 {
408 USBHostDevice *s = (USBHostDevice *)dev;
409
410 usb_host_close(s);
411 QTAILQ_REMOVE(&hostdevs, s, next);
412 qemu_remove_exit_notifier(&s->exit);
413 }
414
415 static int usb_linux_update_endp_table(USBHostDevice *s);
416
417 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
418 {
419 struct usbdevfs_urb *urb;
420 AsyncURB *aurb;
421 int ret;
422
423 aurb = async_alloc();
424 aurb->hdev = s;
425 aurb->packet = p;
426
427 urb = &aurb->urb;
428
429 if (p->pid == USB_TOKEN_IN) {
430 urb->endpoint = p->devep | 0x80;
431 } else {
432 urb->endpoint = p->devep;
433 }
434
435 if (is_halted(s, p->devep)) {
436 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
437 if (ret < 0) {
438 DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n",
439 urb->endpoint, errno);
440 return USB_RET_NAK;
441 }
442 clear_halt(s, p->devep);
443 }
444
445 urb->buffer = p->data;
446 urb->buffer_length = p->len;
447
448 if (is_isoc(s, p->devep)) {
449 /* Setup ISOC transfer */
450 urb->type = USBDEVFS_URB_TYPE_ISO;
451 urb->flags = USBDEVFS_URB_ISO_ASAP;
452 urb->number_of_packets = 1;
453 urb->iso_frame_desc[0].length = p->len;
454 } else {
455 /* Setup bulk transfer */
456 urb->type = USBDEVFS_URB_TYPE_BULK;
457 }
458
459 urb->usercontext = s;
460
461 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
462
463 DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n",
464 urb->endpoint, p->len, aurb);
465
466 if (ret < 0) {
467 DPRINTF("husb: submit failed. errno %d\n", errno);
468 async_free(aurb);
469
470 switch(errno) {
471 case ETIMEDOUT:
472 return USB_RET_NAK;
473 case EPIPE:
474 default:
475 return USB_RET_STALL;
476 }
477 }
478
479 usb_defer_packet(p, async_cancel, aurb);
480 return USB_RET_ASYNC;
481 }
482
483 static int ctrl_error(void)
484 {
485 if (errno == ETIMEDOUT) {
486 return USB_RET_NAK;
487 } else {
488 return USB_RET_STALL;
489 }
490 }
491
492 static int usb_host_set_address(USBHostDevice *s, int addr)
493 {
494 DPRINTF("husb: ctrl set addr %u\n", addr);
495 s->dev.addr = addr;
496 return 0;
497 }
498
499 static int usb_host_set_config(USBHostDevice *s, int config)
500 {
501 usb_host_release_interfaces(s);
502
503 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
504
505 DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
506
507 if (ret < 0) {
508 return ctrl_error();
509 }
510 usb_host_claim_interfaces(s, config);
511 return 0;
512 }
513
514 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
515 {
516 struct usbdevfs_setinterface si;
517 int ret;
518
519 si.interface = iface;
520 si.altsetting = alt;
521 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
522
523 DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
524 iface, alt, ret, errno);
525
526 if (ret < 0) {
527 return ctrl_error();
528 }
529 usb_linux_update_endp_table(s);
530 return 0;
531 }
532
533 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
534 {
535 struct usbdevfs_urb *urb;
536 AsyncURB *aurb;
537 int ret, value, index;
538 int buffer_len;
539
540 /*
541 * Process certain standard device requests.
542 * These are infrequent and are processed synchronously.
543 */
544 value = le16_to_cpu(s->ctrl.req.wValue);
545 index = le16_to_cpu(s->ctrl.req.wIndex);
546
547 DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
548 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
549 s->ctrl.len);
550
551 if (s->ctrl.req.bRequestType == 0) {
552 switch (s->ctrl.req.bRequest) {
553 case USB_REQ_SET_ADDRESS:
554 return usb_host_set_address(s, value);
555
556 case USB_REQ_SET_CONFIGURATION:
557 return usb_host_set_config(s, value & 0xff);
558 }
559 }
560
561 if (s->ctrl.req.bRequestType == 1 &&
562 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) {
563 return usb_host_set_interface(s, index, value);
564 }
565
566 /* The rest are asynchronous */
567
568 buffer_len = 8 + s->ctrl.len;
569 if (buffer_len > sizeof(s->ctrl.buffer)) {
570 fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
571 buffer_len, sizeof(s->ctrl.buffer));
572 return USB_RET_STALL;
573 }
574
575 aurb = async_alloc();
576 aurb->hdev = s;
577 aurb->packet = p;
578
579 /*
580 * Setup ctrl transfer.
581 *
582 * s->ctrl is layed out such that data buffer immediately follows
583 * 'req' struct which is exactly what usbdevfs expects.
584 */
585 urb = &aurb->urb;
586
587 urb->type = USBDEVFS_URB_TYPE_CONTROL;
588 urb->endpoint = p->devep;
589
590 urb->buffer = &s->ctrl.req;
591 urb->buffer_length = buffer_len;
592
593 urb->usercontext = s;
594
595 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
596
597 DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
598
599 if (ret < 0) {
600 DPRINTF("husb: submit failed. errno %d\n", errno);
601 async_free(aurb);
602
603 switch(errno) {
604 case ETIMEDOUT:
605 return USB_RET_NAK;
606 case EPIPE:
607 default:
608 return USB_RET_STALL;
609 }
610 }
611
612 usb_defer_packet(p, async_cancel, aurb);
613 return USB_RET_ASYNC;
614 }
615
616 static int do_token_setup(USBDevice *dev, USBPacket *p)
617 {
618 USBHostDevice *s = (USBHostDevice *) dev;
619 int ret = 0;
620
621 if (p->len != 8) {
622 return USB_RET_STALL;
623 }
624
625 memcpy(&s->ctrl.req, p->data, 8);
626 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
627 s->ctrl.offset = 0;
628 s->ctrl.state = CTRL_STATE_SETUP;
629
630 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
631 ret = usb_host_handle_control(s, p);
632 if (ret < 0) {
633 return ret;
634 }
635
636 if (ret < s->ctrl.len) {
637 s->ctrl.len = ret;
638 }
639 s->ctrl.state = CTRL_STATE_DATA;
640 } else {
641 if (s->ctrl.len == 0) {
642 s->ctrl.state = CTRL_STATE_ACK;
643 } else {
644 s->ctrl.state = CTRL_STATE_DATA;
645 }
646 }
647
648 return ret;
649 }
650
651 static int do_token_in(USBDevice *dev, USBPacket *p)
652 {
653 USBHostDevice *s = (USBHostDevice *) dev;
654 int ret = 0;
655
656 if (p->devep != 0) {
657 return usb_host_handle_data(s, p);
658 }
659
660 switch(s->ctrl.state) {
661 case CTRL_STATE_ACK:
662 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
663 ret = usb_host_handle_control(s, p);
664 if (ret == USB_RET_ASYNC) {
665 return USB_RET_ASYNC;
666 }
667 s->ctrl.state = CTRL_STATE_IDLE;
668 return ret > 0 ? 0 : ret;
669 }
670
671 return 0;
672
673 case CTRL_STATE_DATA:
674 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
675 int len = s->ctrl.len - s->ctrl.offset;
676 if (len > p->len) {
677 len = p->len;
678 }
679 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
680 s->ctrl.offset += len;
681 if (s->ctrl.offset >= s->ctrl.len) {
682 s->ctrl.state = CTRL_STATE_ACK;
683 }
684 return len;
685 }
686
687 s->ctrl.state = CTRL_STATE_IDLE;
688 return USB_RET_STALL;
689
690 default:
691 return USB_RET_STALL;
692 }
693 }
694
695 static int do_token_out(USBDevice *dev, USBPacket *p)
696 {
697 USBHostDevice *s = (USBHostDevice *) dev;
698
699 if (p->devep != 0) {
700 return usb_host_handle_data(s, p);
701 }
702
703 switch(s->ctrl.state) {
704 case CTRL_STATE_ACK:
705 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
706 s->ctrl.state = CTRL_STATE_IDLE;
707 /* transfer OK */
708 } else {
709 /* ignore additional output */
710 }
711 return 0;
712
713 case CTRL_STATE_DATA:
714 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
715 int len = s->ctrl.len - s->ctrl.offset;
716 if (len > p->len) {
717 len = p->len;
718 }
719 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
720 s->ctrl.offset += len;
721 if (s->ctrl.offset >= s->ctrl.len) {
722 s->ctrl.state = CTRL_STATE_ACK;
723 }
724 return len;
725 }
726
727 s->ctrl.state = CTRL_STATE_IDLE;
728 return USB_RET_STALL;
729
730 default:
731 return USB_RET_STALL;
732 }
733 }
734
735 /*
736 * Packet handler.
737 * Called by the HC (host controller).
738 *
739 * Returns length of the transaction or one of the USB_RET_XXX codes.
740 */
741 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
742 {
743 switch(p->pid) {
744 case USB_MSG_ATTACH:
745 s->state = USB_STATE_ATTACHED;
746 return 0;
747
748 case USB_MSG_DETACH:
749 s->state = USB_STATE_NOTATTACHED;
750 return 0;
751
752 case USB_MSG_RESET:
753 s->remote_wakeup = 0;
754 s->addr = 0;
755 s->state = USB_STATE_DEFAULT;
756 s->info->handle_reset(s);
757 return 0;
758 }
759
760 /* Rest of the PIDs must match our address */
761 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) {
762 return USB_RET_NODEV;
763 }
764
765 switch (p->pid) {
766 case USB_TOKEN_SETUP:
767 return do_token_setup(s, p);
768
769 case USB_TOKEN_IN:
770 return do_token_in(s, p);
771
772 case USB_TOKEN_OUT:
773 return do_token_out(s, p);
774
775 default:
776 return USB_RET_STALL;
777 }
778 }
779
780 static int usb_linux_get_configuration(USBHostDevice *s)
781 {
782 uint8_t configuration;
783 struct usb_ctrltransfer ct;
784 int ret;
785
786 if (usb_fs_type == USB_FS_SYS) {
787 char device_name[32], line[1024];
788 int configuration;
789
790 sprintf(device_name, "%d-%d", s->bus_num, s->devpath);
791
792 if (!usb_host_read_file(line, sizeof(line), "bConfigurationValue",
793 device_name)) {
794 goto usbdevfs;
795 }
796 if (sscanf(line, "%d", &configuration) != 1) {
797 goto usbdevfs;
798 }
799 return configuration;
800 }
801
802 usbdevfs:
803 ct.bRequestType = USB_DIR_IN;
804 ct.bRequest = USB_REQ_GET_CONFIGURATION;
805 ct.wValue = 0;
806 ct.wIndex = 0;
807 ct.wLength = 1;
808 ct.data = &configuration;
809 ct.timeout = 50;
810
811 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
812 if (ret < 0) {
813 perror("usb_linux_get_configuration");
814 return -1;
815 }
816
817 /* in address state */
818 if (configuration == 0) {
819 return -1;
820 }
821
822 return configuration;
823 }
824
825 /* returns 1 on problem encountered or 0 for success */
826 static int usb_linux_update_endp_table(USBHostDevice *s)
827 {
828 uint8_t *descriptors;
829 uint8_t devep, type, configuration, alt_interface;
830 struct usb_ctrltransfer ct;
831 int interface, ret, length, i;
832
833 i = usb_linux_get_configuration(s);
834 if (i < 0)
835 return 1;
836 configuration = i;
837
838 /* get the desired configuration, interface, and endpoint descriptors
839 * from device description */
840 descriptors = &s->descr[18];
841 length = s->descr_len - 18;
842 i = 0;
843
844 if (descriptors[i + 1] != USB_DT_CONFIG ||
845 descriptors[i + 5] != configuration) {
846 DPRINTF("invalid descriptor data - configuration\n");
847 return 1;
848 }
849 i += descriptors[i];
850
851 while (i < length) {
852 if (descriptors[i + 1] != USB_DT_INTERFACE ||
853 (descriptors[i + 1] == USB_DT_INTERFACE &&
854 descriptors[i + 4] == 0)) {
855 i += descriptors[i];
856 continue;
857 }
858
859 interface = descriptors[i + 2];
860
861 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
862 ct.bRequest = USB_REQ_GET_INTERFACE;
863 ct.wValue = 0;
864 ct.wIndex = interface;
865 ct.wLength = 1;
866 ct.data = &alt_interface;
867 ct.timeout = 50;
868
869 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
870 if (ret < 0) {
871 alt_interface = interface;
872 }
873
874 /* the current interface descriptor is the active interface
875 * and has endpoints */
876 if (descriptors[i + 3] != alt_interface) {
877 i += descriptors[i];
878 continue;
879 }
880
881 /* advance to the endpoints */
882 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) {
883 i += descriptors[i];
884 }
885
886 if (i >= length)
887 break;
888
889 while (i < length) {
890 if (descriptors[i + 1] != USB_DT_ENDPOINT) {
891 break;
892 }
893
894 devep = descriptors[i + 2];
895 switch (descriptors[i + 3] & 0x3) {
896 case 0x00:
897 type = USBDEVFS_URB_TYPE_CONTROL;
898 break;
899 case 0x01:
900 type = USBDEVFS_URB_TYPE_ISO;
901 break;
902 case 0x02:
903 type = USBDEVFS_URB_TYPE_BULK;
904 break;
905 case 0x03:
906 type = USBDEVFS_URB_TYPE_INTERRUPT;
907 break;
908 default:
909 DPRINTF("usb_host: malformed endpoint type\n");
910 type = USBDEVFS_URB_TYPE_BULK;
911 }
912 s->endp_table[(devep & 0xf) - 1].type = type;
913 s->endp_table[(devep & 0xf) - 1].halted = 0;
914
915 i += descriptors[i];
916 }
917 }
918 return 0;
919 }
920
921 static int usb_host_open(USBHostDevice *dev, int bus_num,
922 int addr, int devpath, const char *prod_name)
923 {
924 int fd = -1, ret;
925 struct usbdevfs_connectinfo ci;
926 char buf[1024];
927
928 if (dev->fd != -1) {
929 goto fail;
930 }
931 printf("husb: open device %d.%d\n", bus_num, addr);
932
933 if (!usb_host_device_path) {
934 perror("husb: USB Host Device Path not set");
935 goto fail;
936 }
937 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
938 bus_num, addr);
939 fd = open(buf, O_RDWR | O_NONBLOCK);
940 if (fd < 0) {
941 perror(buf);
942 goto fail;
943 }
944 DPRINTF("husb: opened %s\n", buf);
945
946 dev->bus_num = bus_num;
947 dev->addr = addr;
948 dev->devpath = devpath;
949 dev->fd = fd;
950
951 /* read the device description */
952 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
953 if (dev->descr_len <= 0) {
954 perror("husb: reading device data failed");
955 goto fail;
956 }
957
958 #ifdef DEBUG
959 {
960 int x;
961 printf("=== begin dumping device descriptor data ===\n");
962 for (x = 0; x < dev->descr_len; x++) {
963 printf("%02x ", dev->descr[x]);
964 }
965 printf("\n=== end dumping device descriptor data ===\n");
966 }
967 #endif
968
969
970 /*
971 * Initial configuration is -1 which makes us claim first
972 * available config. We used to start with 1, which does not
973 * always work. I've seen devices where first config starts
974 * with 2.
975 */
976 if (!usb_host_claim_interfaces(dev, -1)) {
977 goto fail;
978 }
979
980 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
981 if (ret < 0) {
982 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
983 goto fail;
984 }
985
986 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
987
988 ret = usb_linux_update_endp_table(dev);
989 if (ret) {
990 goto fail;
991 }
992
993 if (ci.slow) {
994 dev->dev.speed = USB_SPEED_LOW;
995 } else {
996 dev->dev.speed = USB_SPEED_HIGH;
997 }
998
999 if (!prod_name || prod_name[0] == '\0') {
1000 snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1001 "host:%d.%d", bus_num, addr);
1002 } else {
1003 pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1004 prod_name);
1005 }
1006
1007 /* USB devio uses 'write' flag to check for async completions */
1008 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
1009
1010 usb_device_attach(&dev->dev);
1011 return 0;
1012
1013 fail:
1014 dev->fd = -1;
1015 if (fd != -1) {
1016 close(fd);
1017 }
1018 return -1;
1019 }
1020
1021 static int usb_host_close(USBHostDevice *dev)
1022 {
1023 if (dev->fd == -1) {
1024 return -1;
1025 }
1026
1027 qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
1028 dev->closing = 1;
1029 async_complete(dev);
1030 dev->closing = 0;
1031 usb_device_detach(&dev->dev);
1032 ioctl(dev->fd, USBDEVFS_RESET);
1033 close(dev->fd);
1034 dev->fd = -1;
1035 return 0;
1036 }
1037
1038 static void usb_host_exit_notifier(struct Notifier* n)
1039 {
1040 USBHostDevice *s = container_of(n, USBHostDevice, exit);
1041
1042 if (s->fd != -1) {
1043 ioctl(s->fd, USBDEVFS_RESET);
1044 }
1045 }
1046
1047 static int usb_host_initfn(USBDevice *dev)
1048 {
1049 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
1050
1051 dev->auto_attach = 0;
1052 s->fd = -1;
1053 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1054 s->exit.notify = usb_host_exit_notifier;
1055 qemu_add_exit_notifier(&s->exit);
1056 usb_host_auto_check(NULL);
1057 return 0;
1058 }
1059
1060 static struct USBDeviceInfo usb_host_dev_info = {
1061 .product_desc = "USB Host Device",
1062 .qdev.name = "usb-host",
1063 .qdev.size = sizeof(USBHostDevice),
1064 .init = usb_host_initfn,
1065 .handle_packet = usb_host_handle_packet,
1066 .handle_reset = usb_host_handle_reset,
1067 .handle_destroy = usb_host_handle_destroy,
1068 .usbdevice_name = "host",
1069 .usbdevice_init = usb_host_device_open,
1070 .qdev.props = (Property[]) {
1071 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1072 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1073 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
1074 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
1075 DEFINE_PROP_END_OF_LIST(),
1076 },
1077 };
1078
1079 static void usb_host_register_devices(void)
1080 {
1081 usb_qdev_register(&usb_host_dev_info);
1082 }
1083 device_init(usb_host_register_devices)
1084
1085 USBDevice *usb_host_device_open(const char *devname)
1086 {
1087 struct USBAutoFilter filter;
1088 USBDevice *dev;
1089 char *p;
1090
1091 dev = usb_create(NULL /* FIXME */, "usb-host");
1092
1093 if (strstr(devname, "auto:")) {
1094 if (parse_filter(devname, &filter) < 0) {
1095 goto fail;
1096 }
1097 } else {
1098 if ((p = strchr(devname, '.'))) {
1099 filter.bus_num = strtoul(devname, NULL, 0);
1100 filter.addr = strtoul(p + 1, NULL, 0);
1101 filter.vendor_id = 0;
1102 filter.product_id = 0;
1103 } else if ((p = strchr(devname, ':'))) {
1104 filter.bus_num = 0;
1105 filter.addr = 0;
1106 filter.vendor_id = strtoul(devname, NULL, 16);
1107 filter.product_id = strtoul(p + 1, NULL, 16);
1108 } else {
1109 goto fail;
1110 }
1111 }
1112
1113 qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
1114 qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
1115 qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
1116 qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
1117 qdev_init_nofail(&dev->qdev);
1118 return dev;
1119
1120 fail:
1121 qdev_free(&dev->qdev);
1122 return NULL;
1123 }
1124
1125 int usb_host_device_close(const char *devname)
1126 {
1127 #if 0
1128 char product_name[PRODUCT_NAME_SZ];
1129 int bus_num, addr;
1130 USBHostDevice *s;
1131
1132 if (strstr(devname, "auto:")) {
1133 return usb_host_auto_del(devname);
1134 }
1135 if (usb_host_find_device(&bus_num, &addr, product_name,
1136 sizeof(product_name), devname) < 0) {
1137 return -1;
1138 }
1139 s = hostdev_find(bus_num, addr);
1140 if (s) {
1141 usb_device_delete_addr(s->bus_num, s->dev.addr);
1142 return 0;
1143 }
1144 #endif
1145
1146 return -1;
1147 }
1148
1149 static int get_tag_value(char *buf, int buf_size,
1150 const char *str, const char *tag,
1151 const char *stopchars)
1152 {
1153 const char *p;
1154 char *q;
1155 p = strstr(str, tag);
1156 if (!p) {
1157 return -1;
1158 }
1159 p += strlen(tag);
1160 while (qemu_isspace(*p)) {
1161 p++;
1162 }
1163 q = buf;
1164 while (*p != '\0' && !strchr(stopchars, *p)) {
1165 if ((q - buf) < (buf_size - 1)) {
1166 *q++ = *p;
1167 }
1168 p++;
1169 }
1170 *q = '\0';
1171 return q - buf;
1172 }
1173
1174 /*
1175 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1176 * host's USB devices. This is legacy support since many distributions
1177 * are moving to /sys/bus/usb
1178 */
1179 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1180 {
1181 FILE *f = NULL;
1182 char line[1024];
1183 char buf[1024];
1184 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1185 char product_name[512];
1186 int ret = 0;
1187
1188 if (!usb_host_device_path) {
1189 perror("husb: USB Host Device Path not set");
1190 goto the_end;
1191 }
1192 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1193 f = fopen(line, "r");
1194 if (!f) {
1195 perror("husb: cannot open devices file");
1196 goto the_end;
1197 }
1198
1199 device_count = 0;
1200 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1201 for(;;) {
1202 if (fgets(line, sizeof(line), f) == NULL) {
1203 break;
1204 }
1205 if (strlen(line) > 0) {
1206 line[strlen(line) - 1] = '\0';
1207 }
1208 if (line[0] == 'T' && line[1] == ':') {
1209 if (device_count && (vendor_id || product_id)) {
1210 /* New device. Add the previously discovered device. */
1211 ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
1212 product_id, product_name, speed);
1213 if (ret) {
1214 goto the_end;
1215 }
1216 }
1217 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) {
1218 goto fail;
1219 }
1220 bus_num = atoi(buf);
1221 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) {
1222 goto fail;
1223 }
1224 addr = atoi(buf);
1225 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) {
1226 goto fail;
1227 }
1228 if (!strcmp(buf, "480")) {
1229 speed = USB_SPEED_HIGH;
1230 } else if (!strcmp(buf, "1.5")) {
1231 speed = USB_SPEED_LOW;
1232 } else {
1233 speed = USB_SPEED_FULL;
1234 }
1235 product_name[0] = '\0';
1236 class_id = 0xff;
1237 device_count++;
1238 product_id = 0;
1239 vendor_id = 0;
1240 } else if (line[0] == 'P' && line[1] == ':') {
1241 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) {
1242 goto fail;
1243 }
1244 vendor_id = strtoul(buf, NULL, 16);
1245 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) {
1246 goto fail;
1247 }
1248 product_id = strtoul(buf, NULL, 16);
1249 } else if (line[0] == 'S' && line[1] == ':') {
1250 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) {
1251 goto fail;
1252 }
1253 pstrcpy(product_name, sizeof(product_name), buf);
1254 } else if (line[0] == 'D' && line[1] == ':') {
1255 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) {
1256 goto fail;
1257 }
1258 class_id = strtoul(buf, NULL, 16);
1259 }
1260 fail: ;
1261 }
1262 if (device_count && (vendor_id || product_id)) {
1263 /* Add the last device. */
1264 ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
1265 product_id, product_name, speed);
1266 }
1267 the_end:
1268 if (f) {
1269 fclose(f);
1270 }
1271 return ret;
1272 }
1273
1274 /*
1275 * Read sys file-system device file
1276 *
1277 * @line address of buffer to put file contents in
1278 * @line_size size of line
1279 * @device_file path to device file (printf format string)
1280 * @device_name device being opened (inserted into device_file)
1281 *
1282 * @return 0 failed, 1 succeeded ('line' contains data)
1283 */
1284 static int usb_host_read_file(char *line, size_t line_size,
1285 const char *device_file, const char *device_name)
1286 {
1287 FILE *f;
1288 int ret = 0;
1289 char filename[PATH_MAX];
1290
1291 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
1292 device_file);
1293 f = fopen(filename, "r");
1294 if (f) {
1295 ret = fgets(line, line_size, f) != NULL;
1296 fclose(f);
1297 }
1298
1299 return ret;
1300 }
1301
1302 /*
1303 * Use /sys/bus/usb/devices/ directory to determine host's USB
1304 * devices.
1305 *
1306 * This code is based on Robert Schiele's original patches posted to
1307 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1308 */
1309 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1310 {
1311 DIR *dir = NULL;
1312 char line[1024];
1313 int bus_num, addr, devpath, speed, class_id, product_id, vendor_id;
1314 int ret = 0;
1315 char product_name[512];
1316 struct dirent *de;
1317
1318 dir = opendir(USBSYSBUS_PATH "/devices");
1319 if (!dir) {
1320 perror("husb: cannot open devices directory");
1321 goto the_end;
1322 }
1323
1324 while ((de = readdir(dir))) {
1325 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1326 char *tmpstr = de->d_name;
1327 if (!strncmp(de->d_name, "usb", 3)) {
1328 tmpstr += 3;
1329 }
1330 if (sscanf(tmpstr, "%d-%d", &bus_num, &devpath) < 1) {
1331 goto the_end;
1332 }
1333
1334 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) {
1335 goto the_end;
1336 }
1337 if (sscanf(line, "%d", &addr) != 1) {
1338 goto the_end;
1339 }
1340 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1341 de->d_name)) {
1342 goto the_end;
1343 }
1344 if (sscanf(line, "%x", &class_id) != 1) {
1345 goto the_end;
1346 }
1347
1348 if (!usb_host_read_file(line, sizeof(line), "idVendor",
1349 de->d_name)) {
1350 goto the_end;
1351 }
1352 if (sscanf(line, "%x", &vendor_id) != 1) {
1353 goto the_end;
1354 }
1355 if (!usb_host_read_file(line, sizeof(line), "idProduct",
1356 de->d_name)) {
1357 goto the_end;
1358 }
1359 if (sscanf(line, "%x", &product_id) != 1) {
1360 goto the_end;
1361 }
1362 if (!usb_host_read_file(line, sizeof(line), "product",
1363 de->d_name)) {
1364 *product_name = 0;
1365 } else {
1366 if (strlen(line) > 0) {
1367 line[strlen(line) - 1] = '\0';
1368 }
1369 pstrcpy(product_name, sizeof(product_name), line);
1370 }
1371
1372 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) {
1373 goto the_end;
1374 }
1375 if (!strcmp(line, "480\n")) {
1376 speed = USB_SPEED_HIGH;
1377 } else if (!strcmp(line, "1.5\n")) {
1378 speed = USB_SPEED_LOW;
1379 } else {
1380 speed = USB_SPEED_FULL;
1381 }
1382
1383 ret = func(opaque, bus_num, addr, devpath, class_id, vendor_id,
1384 product_id, product_name, speed);
1385 if (ret) {
1386 goto the_end;
1387 }
1388 }
1389 }
1390 the_end:
1391 if (dir) {
1392 closedir(dir);
1393 }
1394 return ret;
1395 }
1396
1397 /*
1398 * Determine how to access the host's USB devices and call the
1399 * specific support function.
1400 */
1401 static int usb_host_scan(void *opaque, USBScanFunc *func)
1402 {
1403 Monitor *mon = cur_mon;
1404 FILE *f = NULL;
1405 DIR *dir = NULL;
1406 int ret = 0;
1407 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1408 char devpath[PATH_MAX];
1409
1410 /* only check the host once */
1411 if (!usb_fs_type) {
1412 dir = opendir(USBSYSBUS_PATH "/devices");
1413 if (dir) {
1414 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1415 strcpy(devpath, USBDEVBUS_PATH);
1416 usb_fs_type = USB_FS_SYS;
1417 closedir(dir);
1418 DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1419 goto found_devices;
1420 }
1421 f = fopen(USBPROCBUS_PATH "/devices", "r");
1422 if (f) {
1423 /* devices found in /proc/bus/usb/ */
1424 strcpy(devpath, USBPROCBUS_PATH);
1425 usb_fs_type = USB_FS_PROC;
1426 fclose(f);
1427 DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1428 goto found_devices;
1429 }
1430 /* try additional methods if an access method hasn't been found yet */
1431 f = fopen(USBDEVBUS_PATH "/devices", "r");
1432 if (f) {
1433 /* devices found in /dev/bus/usb/ */
1434 strcpy(devpath, USBDEVBUS_PATH);
1435 usb_fs_type = USB_FS_DEV;
1436 fclose(f);
1437 DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1438 goto found_devices;
1439 }
1440 found_devices:
1441 if (!usb_fs_type) {
1442 if (mon) {
1443 monitor_printf(mon, "husb: unable to access USB devices\n");
1444 }
1445 return -ENOENT;
1446 }
1447
1448 /* the module setting (used later for opening devices) */
1449 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1450 strcpy(usb_host_device_path, devpath);
1451 if (mon) {
1452 monitor_printf(mon, "husb: using %s file-system with %s\n",
1453 fs_type[usb_fs_type], usb_host_device_path);
1454 }
1455 }
1456
1457 switch (usb_fs_type) {
1458 case USB_FS_PROC:
1459 case USB_FS_DEV:
1460 ret = usb_host_scan_dev(opaque, func);
1461 break;
1462 case USB_FS_SYS:
1463 ret = usb_host_scan_sys(opaque, func);
1464 break;
1465 default:
1466 ret = -EINVAL;
1467 break;
1468 }
1469 return ret;
1470 }
1471
1472 static QEMUTimer *usb_auto_timer;
1473
1474 static int usb_host_auto_scan(void *opaque, int bus_num, int addr, int devpath,
1475 int class_id, int vendor_id, int product_id,
1476 const char *product_name, int speed)
1477 {
1478 struct USBAutoFilter *f;
1479 struct USBHostDevice *s;
1480
1481 /* Ignore hubs */
1482 if (class_id == 9)
1483 return 0;
1484
1485 QTAILQ_FOREACH(s, &hostdevs, next) {
1486 f = &s->match;
1487
1488 if (f->bus_num > 0 && f->bus_num != bus_num) {
1489 continue;
1490 }
1491 if (f->addr > 0 && f->addr != addr) {
1492 continue;
1493 }
1494
1495 if (f->vendor_id > 0 && f->vendor_id != vendor_id) {
1496 continue;
1497 }
1498
1499 if (f->product_id > 0 && f->product_id != product_id) {
1500 continue;
1501 }
1502 /* We got a match */
1503
1504 /* Already attached ? */
1505 if (s->fd != -1) {
1506 return 0;
1507 }
1508 DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1509
1510 usb_host_open(s, bus_num, addr, devpath, product_name);
1511 }
1512
1513 return 0;
1514 }
1515
1516 static void usb_host_auto_check(void *unused)
1517 {
1518 struct USBHostDevice *s;
1519 int unconnected = 0;
1520
1521 usb_host_scan(NULL, usb_host_auto_scan);
1522
1523 QTAILQ_FOREACH(s, &hostdevs, next) {
1524 if (s->fd == -1) {
1525 unconnected++;
1526 }
1527 }
1528
1529 if (unconnected == 0) {
1530 /* nothing to watch */
1531 if (usb_auto_timer) {
1532 qemu_del_timer(usb_auto_timer);
1533 }
1534 return;
1535 }
1536
1537 if (!usb_auto_timer) {
1538 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_check, NULL);
1539 if (!usb_auto_timer) {
1540 return;
1541 }
1542 }
1543 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1544 }
1545
1546 /*
1547 * Autoconnect filter
1548 * Format:
1549 * auto:bus:dev[:vid:pid]
1550 * auto:bus.dev[:vid:pid]
1551 *
1552 * bus - bus number (dec, * means any)
1553 * dev - device number (dec, * means any)
1554 * vid - vendor id (hex, * means any)
1555 * pid - product id (hex, * means any)
1556 *
1557 * See 'lsusb' output.
1558 */
1559 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1560 {
1561 enum { BUS, DEV, VID, PID, DONE };
1562 const char *p = spec;
1563 int i;
1564
1565 f->bus_num = 0;
1566 f->addr = 0;
1567 f->vendor_id = 0;
1568 f->product_id = 0;
1569
1570 for (i = BUS; i < DONE; i++) {
1571 p = strpbrk(p, ":.");
1572 if (!p) {
1573 break;
1574 }
1575 p++;
1576
1577 if (*p == '*') {
1578 continue;
1579 }
1580 switch(i) {
1581 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1582 case DEV: f->addr = strtol(p, NULL, 10); break;
1583 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1584 case PID: f->product_id = strtol(p, NULL, 16); break;
1585 }
1586 }
1587
1588 if (i < DEV) {
1589 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1590 return -1;
1591 }
1592
1593 return 0;
1594 }
1595
1596 /**********************/
1597 /* USB host device info */
1598
1599 struct usb_class_info {
1600 int class;
1601 const char *class_name;
1602 };
1603
1604 static const struct usb_class_info usb_class_info[] = {
1605 { USB_CLASS_AUDIO, "Audio"},
1606 { USB_CLASS_COMM, "Communication"},
1607 { USB_CLASS_HID, "HID"},
1608 { USB_CLASS_HUB, "Hub" },
1609 { USB_CLASS_PHYSICAL, "Physical" },
1610 { USB_CLASS_PRINTER, "Printer" },
1611 { USB_CLASS_MASS_STORAGE, "Storage" },
1612 { USB_CLASS_CDC_DATA, "Data" },
1613 { USB_CLASS_APP_SPEC, "Application Specific" },
1614 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1615 { USB_CLASS_STILL_IMAGE, "Still Image" },
1616 { USB_CLASS_CSCID, "Smart Card" },
1617 { USB_CLASS_CONTENT_SEC, "Content Security" },
1618 { -1, NULL }
1619 };
1620
1621 static const char *usb_class_str(uint8_t class)
1622 {
1623 const struct usb_class_info *p;
1624 for(p = usb_class_info; p->class != -1; p++) {
1625 if (p->class == class) {
1626 break;
1627 }
1628 }
1629 return p->class_name;
1630 }
1631
1632 static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
1633 int vendor_id, int product_id,
1634 const char *product_name,
1635 int speed)
1636 {
1637 const char *class_str, *speed_str;
1638
1639 switch(speed) {
1640 case USB_SPEED_LOW:
1641 speed_str = "1.5";
1642 break;
1643 case USB_SPEED_FULL:
1644 speed_str = "12";
1645 break;
1646 case USB_SPEED_HIGH:
1647 speed_str = "480";
1648 break;
1649 default:
1650 speed_str = "?";
1651 break;
1652 }
1653
1654 monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
1655 bus_num, addr, speed_str);
1656 class_str = usb_class_str(class_id);
1657 if (class_str) {
1658 monitor_printf(mon, " %s:", class_str);
1659 } else {
1660 monitor_printf(mon, " Class %02x:", class_id);
1661 }
1662 monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
1663 if (product_name[0] != '\0') {
1664 monitor_printf(mon, ", %s", product_name);
1665 }
1666 monitor_printf(mon, "\n");
1667 }
1668
1669 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1670 int devpath, int class_id,
1671 int vendor_id, int product_id,
1672 const char *product_name,
1673 int speed)
1674 {
1675 Monitor *mon = opaque;
1676
1677 usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
1678 product_name, speed);
1679 return 0;
1680 }
1681
1682 static void dec2str(int val, char *str, size_t size)
1683 {
1684 if (val == 0) {
1685 snprintf(str, size, "*");
1686 } else {
1687 snprintf(str, size, "%d", val);
1688 }
1689 }
1690
1691 static void hex2str(int val, char *str, size_t size)
1692 {
1693 if (val == 0) {
1694 snprintf(str, size, "*");
1695 } else {
1696 snprintf(str, size, "%04x", val);
1697 }
1698 }
1699
1700 void usb_host_info(Monitor *mon)
1701 {
1702 struct USBAutoFilter *f;
1703 struct USBHostDevice *s;
1704
1705 usb_host_scan(mon, usb_host_info_device);
1706
1707 if (QTAILQ_EMPTY(&hostdevs)) {
1708 return;
1709 }
1710
1711 monitor_printf(mon, " Auto filters:\n");
1712 QTAILQ_FOREACH(s, &hostdevs, next) {
1713 char bus[10], addr[10], vid[10], pid[10];
1714 f = &s->match;
1715 dec2str(f->bus_num, bus, sizeof(bus));
1716 dec2str(f->addr, addr, sizeof(addr));
1717 hex2str(f->vendor_id, vid, sizeof(vid));
1718 hex2str(f->product_id, pid, sizeof(pid));
1719 monitor_printf(mon, " Device %s.%s ID %s:%s\n",
1720 bus, addr, vid, pid);
1721 }
1722 }
various patches