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Remove unused function parameters from gen_pc_load and rename the function
[qemu/mdroth.git] / usb-linux.c
blob1f33c2c230f6171cf98c42ab399b2ab093156e35
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 contiguous 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 ctrl.data = 0;
348 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
349 if (ret < 0 && errno != ENODATA) {
350 perror("USBDEVFS_DISCONNECT");
351 goto fail;
352 }
353 }
354 }
355 #endif
356
357 /* XXX: only grab if all interfaces are free */
358 for (interface = 0; interface < nb_interfaces; interface++) {
359 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
360 if (ret < 0) {
361 if (errno == EBUSY) {
362 printf("husb: update iface. device already grabbed\n");
363 } else {
364 perror("husb: failed to claim interface");
365 }
366 fail:
367 return 0;
368 }
369 }
370
371 printf("husb: %d interfaces claimed for configuration %d\n",
372 nb_interfaces, configuration);
373
374 dev->ninterfaces = nb_interfaces;
375 dev->configuration = configuration;
376 return 1;
377 }
378
379 static int usb_host_release_interfaces(USBHostDevice *s)
380 {
381 int ret, i;
382
383 DPRINTF("husb: releasing interfaces\n");
384
385 for (i = 0; i < s->ninterfaces; i++) {
386 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
387 if (ret < 0) {
388 perror("husb: failed to release interface");
389 return 0;
390 }
391 }
392
393 return 1;
394 }
395
396 static void usb_host_handle_reset(USBDevice *dev)
397 {
398 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
399
400 DPRINTF("husb: reset device %u.%u\n", s->bus_num, s->addr);
401
402 ioctl(s->fd, USBDEVFS_RESET);
403
404 usb_host_claim_interfaces(s, s->configuration);
405 }
406
407 static void usb_host_handle_destroy(USBDevice *dev)
408 {
409 USBHostDevice *s = (USBHostDevice *)dev;
410
411 usb_host_close(s);
412 QTAILQ_REMOVE(&hostdevs, s, next);
413 qemu_remove_exit_notifier(&s->exit);
414 }
415
416 static int usb_linux_update_endp_table(USBHostDevice *s);
417
418 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
419 {
420 struct usbdevfs_urb *urb;
421 AsyncURB *aurb;
422 int ret;
423
424 aurb = async_alloc();
425 aurb->hdev = s;
426 aurb->packet = p;
427
428 urb = &aurb->urb;
429
430 if (p->pid == USB_TOKEN_IN) {
431 urb->endpoint = p->devep | 0x80;
432 } else {
433 urb->endpoint = p->devep;
434 }
435
436 if (is_halted(s, p->devep)) {
437 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
438 if (ret < 0) {
439 DPRINTF("husb: failed to clear halt. ep 0x%x errno %d\n",
440 urb->endpoint, errno);
441 return USB_RET_NAK;
442 }
443 clear_halt(s, p->devep);
444 }
445
446 urb->buffer = p->data;
447 urb->buffer_length = p->len;
448
449 if (is_isoc(s, p->devep)) {
450 /* Setup ISOC transfer */
451 urb->type = USBDEVFS_URB_TYPE_ISO;
452 urb->flags = USBDEVFS_URB_ISO_ASAP;
453 urb->number_of_packets = 1;
454 urb->iso_frame_desc[0].length = p->len;
455 } else {
456 /* Setup bulk transfer */
457 urb->type = USBDEVFS_URB_TYPE_BULK;
458 }
459
460 urb->usercontext = s;
461
462 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
463
464 DPRINTF("husb: data submit. ep 0x%x len %u aurb %p\n",
465 urb->endpoint, p->len, aurb);
466
467 if (ret < 0) {
468 DPRINTF("husb: submit failed. errno %d\n", errno);
469 async_free(aurb);
470
471 switch(errno) {
472 case ETIMEDOUT:
473 return USB_RET_NAK;
474 case EPIPE:
475 default:
476 return USB_RET_STALL;
477 }
478 }
479
480 usb_defer_packet(p, async_cancel, aurb);
481 return USB_RET_ASYNC;
482 }
483
484 static int ctrl_error(void)
485 {
486 if (errno == ETIMEDOUT) {
487 return USB_RET_NAK;
488 } else {
489 return USB_RET_STALL;
490 }
491 }
492
493 static int usb_host_set_address(USBHostDevice *s, int addr)
494 {
495 DPRINTF("husb: ctrl set addr %u\n", addr);
496 s->dev.addr = addr;
497 return 0;
498 }
499
500 static int usb_host_set_config(USBHostDevice *s, int config)
501 {
502 usb_host_release_interfaces(s);
503
504 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
505
506 DPRINTF("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
507
508 if (ret < 0) {
509 return ctrl_error();
510 }
511 usb_host_claim_interfaces(s, config);
512 return 0;
513 }
514
515 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
516 {
517 struct usbdevfs_setinterface si;
518 int ret;
519
520 si.interface = iface;
521 si.altsetting = alt;
522 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
523
524 DPRINTF("husb: ctrl set iface %d altset %d ret %d errno %d\n",
525 iface, alt, ret, errno);
526
527 if (ret < 0) {
528 return ctrl_error();
529 }
530 usb_linux_update_endp_table(s);
531 return 0;
532 }
533
534 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
535 {
536 struct usbdevfs_urb *urb;
537 AsyncURB *aurb;
538 int ret, value, index;
539 int buffer_len;
540
541 /*
542 * Process certain standard device requests.
543 * These are infrequent and are processed synchronously.
544 */
545 value = le16_to_cpu(s->ctrl.req.wValue);
546 index = le16_to_cpu(s->ctrl.req.wIndex);
547
548 DPRINTF("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
549 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
550 s->ctrl.len);
551
552 if (s->ctrl.req.bRequestType == 0) {
553 switch (s->ctrl.req.bRequest) {
554 case USB_REQ_SET_ADDRESS:
555 return usb_host_set_address(s, value);
556
557 case USB_REQ_SET_CONFIGURATION:
558 return usb_host_set_config(s, value & 0xff);
559 }
560 }
561
562 if (s->ctrl.req.bRequestType == 1 &&
563 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE) {
564 return usb_host_set_interface(s, index, value);
565 }
566
567 /* The rest are asynchronous */
568
569 buffer_len = 8 + s->ctrl.len;
570 if (buffer_len > sizeof(s->ctrl.buffer)) {
571 fprintf(stderr, "husb: ctrl buffer too small (%u > %zu)\n",
572 buffer_len, sizeof(s->ctrl.buffer));
573 return USB_RET_STALL;
574 }
575
576 aurb = async_alloc();
577 aurb->hdev = s;
578 aurb->packet = p;
579
580 /*
581 * Setup ctrl transfer.
582 *
583 * s->ctrl is laid out such that data buffer immediately follows
584 * 'req' struct which is exactly what usbdevfs expects.
585 */
586 urb = &aurb->urb;
587
588 urb->type = USBDEVFS_URB_TYPE_CONTROL;
589 urb->endpoint = p->devep;
590
591 urb->buffer = &s->ctrl.req;
592 urb->buffer_length = buffer_len;
593
594 urb->usercontext = s;
595
596 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
597
598 DPRINTF("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
599
600 if (ret < 0) {
601 DPRINTF("husb: submit failed. errno %d\n", errno);
602 async_free(aurb);
603
604 switch(errno) {
605 case ETIMEDOUT:
606 return USB_RET_NAK;
607 case EPIPE:
608 default:
609 return USB_RET_STALL;
610 }
611 }
612
613 usb_defer_packet(p, async_cancel, aurb);
614 return USB_RET_ASYNC;
615 }
616
617 static int do_token_setup(USBDevice *dev, USBPacket *p)
618 {
619 USBHostDevice *s = (USBHostDevice *) dev;
620 int ret = 0;
621
622 if (p->len != 8) {
623 return USB_RET_STALL;
624 }
625
626 memcpy(&s->ctrl.req, p->data, 8);
627 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
628 s->ctrl.offset = 0;
629 s->ctrl.state = CTRL_STATE_SETUP;
630
631 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
632 ret = usb_host_handle_control(s, p);
633 if (ret < 0) {
634 return ret;
635 }
636
637 if (ret < s->ctrl.len) {
638 s->ctrl.len = ret;
639 }
640 s->ctrl.state = CTRL_STATE_DATA;
641 } else {
642 if (s->ctrl.len == 0) {
643 s->ctrl.state = CTRL_STATE_ACK;
644 } else {
645 s->ctrl.state = CTRL_STATE_DATA;
646 }
647 }
648
649 return ret;
650 }
651
652 static int do_token_in(USBDevice *dev, USBPacket *p)
653 {
654 USBHostDevice *s = (USBHostDevice *) dev;
655 int ret = 0;
656
657 if (p->devep != 0) {
658 return usb_host_handle_data(s, p);
659 }
660
661 switch(s->ctrl.state) {
662 case CTRL_STATE_ACK:
663 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
664 ret = usb_host_handle_control(s, p);
665 if (ret == USB_RET_ASYNC) {
666 return USB_RET_ASYNC;
667 }
668 s->ctrl.state = CTRL_STATE_IDLE;
669 return ret > 0 ? 0 : ret;
670 }
671
672 return 0;
673
674 case CTRL_STATE_DATA:
675 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
676 int len = s->ctrl.len - s->ctrl.offset;
677 if (len > p->len) {
678 len = p->len;
679 }
680 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
681 s->ctrl.offset += len;
682 if (s->ctrl.offset >= s->ctrl.len) {
683 s->ctrl.state = CTRL_STATE_ACK;
684 }
685 return len;
686 }
687
688 s->ctrl.state = CTRL_STATE_IDLE;
689 return USB_RET_STALL;
690
691 default:
692 return USB_RET_STALL;
693 }
694 }
695
696 static int do_token_out(USBDevice *dev, USBPacket *p)
697 {
698 USBHostDevice *s = (USBHostDevice *) dev;
699
700 if (p->devep != 0) {
701 return usb_host_handle_data(s, p);
702 }
703
704 switch(s->ctrl.state) {
705 case CTRL_STATE_ACK:
706 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
707 s->ctrl.state = CTRL_STATE_IDLE;
708 /* transfer OK */
709 } else {
710 /* ignore additional output */
711 }
712 return 0;
713
714 case CTRL_STATE_DATA:
715 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
716 int len = s->ctrl.len - s->ctrl.offset;
717 if (len > p->len) {
718 len = p->len;
719 }
720 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
721 s->ctrl.offset += len;
722 if (s->ctrl.offset >= s->ctrl.len) {
723 s->ctrl.state = CTRL_STATE_ACK;
724 }
725 return len;
726 }
727
728 s->ctrl.state = CTRL_STATE_IDLE;
729 return USB_RET_STALL;
730
731 default:
732 return USB_RET_STALL;
733 }
734 }
735
736 /*
737 * Packet handler.
738 * Called by the HC (host controller).
739 *
740 * Returns length of the transaction or one of the USB_RET_XXX codes.
741 */
742 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
743 {
744 switch(p->pid) {
745 case USB_MSG_ATTACH:
746 s->state = USB_STATE_ATTACHED;
747 return 0;
748
749 case USB_MSG_DETACH:
750 s->state = USB_STATE_NOTATTACHED;
751 return 0;
752
753 case USB_MSG_RESET:
754 s->remote_wakeup = 0;
755 s->addr = 0;
756 s->state = USB_STATE_DEFAULT;
757 s->info->handle_reset(s);
758 return 0;
759 }
760
761 /* Rest of the PIDs must match our address */
762 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr) {
763 return USB_RET_NODEV;
764 }
765
766 switch (p->pid) {
767 case USB_TOKEN_SETUP:
768 return do_token_setup(s, p);
769
770 case USB_TOKEN_IN:
771 return do_token_in(s, p);
772
773 case USB_TOKEN_OUT:
774 return do_token_out(s, p);
775
776 default:
777 return USB_RET_STALL;
778 }
779 }
780
781 static int usb_linux_get_configuration(USBHostDevice *s)
782 {
783 uint8_t configuration;
784 struct usb_ctrltransfer ct;
785 int ret;
786
787 if (usb_fs_type == USB_FS_SYS) {
788 char device_name[32], line[1024];
789 int configuration;
790
791 sprintf(device_name, "%d-%d", s->bus_num, s->devpath);
792
793 if (!usb_host_read_file(line, sizeof(line), "bConfigurationValue",
794 device_name)) {
795 goto usbdevfs;
796 }
797 if (sscanf(line, "%d", &configuration) != 1) {
798 goto usbdevfs;
799 }
800 return configuration;
801 }
802
803 usbdevfs:
804 ct.bRequestType = USB_DIR_IN;
805 ct.bRequest = USB_REQ_GET_CONFIGURATION;
806 ct.wValue = 0;
807 ct.wIndex = 0;
808 ct.wLength = 1;
809 ct.data = &configuration;
810 ct.timeout = 50;
811
812 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
813 if (ret < 0) {
814 perror("usb_linux_get_configuration");
815 return -1;
816 }
817
818 /* in address state */
819 if (configuration == 0) {
820 return -1;
821 }
822
823 return configuration;
824 }
825
826 /* returns 1 on problem encountered or 0 for success */
827 static int usb_linux_update_endp_table(USBHostDevice *s)
828 {
829 uint8_t *descriptors;
830 uint8_t devep, type, configuration, alt_interface;
831 struct usb_ctrltransfer ct;
832 int interface, ret, length, i;
833
834 i = usb_linux_get_configuration(s);
835 if (i < 0)
836 return 1;
837 configuration = i;
838
839 /* get the desired configuration, interface, and endpoint descriptors
840 * from device description */
841 descriptors = &s->descr[18];
842 length = s->descr_len - 18;
843 i = 0;
844
845 if (descriptors[i + 1] != USB_DT_CONFIG ||
846 descriptors[i + 5] != configuration) {
847 DPRINTF("invalid descriptor data - configuration\n");
848 return 1;
849 }
850 i += descriptors[i];
851
852 while (i < length) {
853 if (descriptors[i + 1] != USB_DT_INTERFACE ||
854 (descriptors[i + 1] == USB_DT_INTERFACE &&
855 descriptors[i + 4] == 0)) {
856 i += descriptors[i];
857 continue;
858 }
859
860 interface = descriptors[i + 2];
861
862 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
863 ct.bRequest = USB_REQ_GET_INTERFACE;
864 ct.wValue = 0;
865 ct.wIndex = interface;
866 ct.wLength = 1;
867 ct.data = &alt_interface;
868 ct.timeout = 50;
869
870 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
871 if (ret < 0) {
872 alt_interface = interface;
873 }
874
875 /* the current interface descriptor is the active interface
876 * and has endpoints */
877 if (descriptors[i + 3] != alt_interface) {
878 i += descriptors[i];
879 continue;
880 }
881
882 /* advance to the endpoints */
883 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT) {
884 i += descriptors[i];
885 }
886
887 if (i >= length)
888 break;
889
890 while (i < length) {
891 if (descriptors[i + 1] != USB_DT_ENDPOINT) {
892 break;
893 }
894
895 devep = descriptors[i + 2];
896 switch (descriptors[i + 3] & 0x3) {
897 case 0x00:
898 type = USBDEVFS_URB_TYPE_CONTROL;
899 break;
900 case 0x01:
901 type = USBDEVFS_URB_TYPE_ISO;
902 break;
903 case 0x02:
904 type = USBDEVFS_URB_TYPE_BULK;
905 break;
906 case 0x03:
907 type = USBDEVFS_URB_TYPE_INTERRUPT;
908 break;
909 default:
910 DPRINTF("usb_host: malformed endpoint type\n");
911 type = USBDEVFS_URB_TYPE_BULK;
912 }
913 s->endp_table[(devep & 0xf) - 1].type = type;
914 s->endp_table[(devep & 0xf) - 1].halted = 0;
915
916 i += descriptors[i];
917 }
918 }
919 return 0;
920 }
921
922 static int usb_host_open(USBHostDevice *dev, int bus_num,
923 int addr, int devpath, const char *prod_name)
924 {
925 int fd = -1, ret;
926 struct usbdevfs_connectinfo ci;
927 char buf[1024];
928
929 if (dev->fd != -1) {
930 goto fail;
931 }
932 printf("husb: open device %d.%d\n", bus_num, addr);
933
934 if (!usb_host_device_path) {
935 perror("husb: USB Host Device Path not set");
936 goto fail;
937 }
938 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
939 bus_num, addr);
940 fd = open(buf, O_RDWR | O_NONBLOCK);
941 if (fd < 0) {
942 perror(buf);
943 goto fail;
944 }
945 DPRINTF("husb: opened %s\n", buf);
946
947 dev->bus_num = bus_num;
948 dev->addr = addr;
949 dev->devpath = devpath;
950 dev->fd = fd;
951
952 /* read the device description */
953 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
954 if (dev->descr_len <= 0) {
955 perror("husb: reading device data failed");
956 goto fail;
957 }
958
959 #ifdef DEBUG
960 {
961 int x;
962 printf("=== begin dumping device descriptor data ===\n");
963 for (x = 0; x < dev->descr_len; x++) {
964 printf("%02x ", dev->descr[x]);
965 }
966 printf("\n=== end dumping device descriptor data ===\n");
967 }
968 #endif
969
970
971 /*
972 * Initial configuration is -1 which makes us claim first
973 * available config. We used to start with 1, which does not
974 * always work. I've seen devices where first config starts
975 * with 2.
976 */
977 if (!usb_host_claim_interfaces(dev, -1)) {
978 goto fail;
979 }
980
981 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
982 if (ret < 0) {
983 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
984 goto fail;
985 }
986
987 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
988
989 ret = usb_linux_update_endp_table(dev);
990 if (ret) {
991 goto fail;
992 }
993
994 if (ci.slow) {
995 dev->dev.speed = USB_SPEED_LOW;
996 } else {
997 dev->dev.speed = USB_SPEED_HIGH;
998 }
999
1000 if (!prod_name || prod_name[0] == '\0') {
1001 snprintf(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1002 "host:%d.%d", bus_num, addr);
1003 } else {
1004 pstrcpy(dev->dev.product_desc, sizeof(dev->dev.product_desc),
1005 prod_name);
1006 }
1007
1008 /* USB devio uses 'write' flag to check for async completions */
1009 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
1010
1011 usb_device_attach(&dev->dev);
1012 return 0;
1013
1014 fail:
1015 dev->fd = -1;
1016 if (fd != -1) {
1017 close(fd);
1018 }
1019 return -1;
1020 }
1021
1022 static int usb_host_close(USBHostDevice *dev)
1023 {
1024 if (dev->fd == -1) {
1025 return -1;
1026 }
1027
1028 qemu_set_fd_handler(dev->fd, NULL, NULL, NULL);
1029 dev->closing = 1;
1030 async_complete(dev);
1031 dev->closing = 0;
1032 usb_device_detach(&dev->dev);
1033 ioctl(dev->fd, USBDEVFS_RESET);
1034 close(dev->fd);
1035 dev->fd = -1;
1036 return 0;
1037 }
1038
1039 static void usb_host_exit_notifier(struct Notifier* n)
1040 {
1041 USBHostDevice *s = container_of(n, USBHostDevice, exit);
1042
1043 if (s->fd != -1) {
1044 ioctl(s->fd, USBDEVFS_RESET);
1045 }
1046 }
1047
1048 static int usb_host_initfn(USBDevice *dev)
1049 {
1050 USBHostDevice *s = DO_UPCAST(USBHostDevice, dev, dev);
1051
1052 dev->auto_attach = 0;
1053 s->fd = -1;
1054 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1055 s->exit.notify = usb_host_exit_notifier;
1056 qemu_add_exit_notifier(&s->exit);
1057 usb_host_auto_check(NULL);
1058 return 0;
1059 }
1060
1061 static struct USBDeviceInfo usb_host_dev_info = {
1062 .product_desc = "USB Host Device",
1063 .qdev.name = "usb-host",
1064 .qdev.size = sizeof(USBHostDevice),
1065 .init = usb_host_initfn,
1066 .handle_packet = usb_host_handle_packet,
1067 .handle_reset = usb_host_handle_reset,
1068 .handle_destroy = usb_host_handle_destroy,
1069 .usbdevice_name = "host",
1070 .usbdevice_init = usb_host_device_open,
1071 .qdev.props = (Property[]) {
1072 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1073 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1074 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
1075 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
1076 DEFINE_PROP_END_OF_LIST(),
1077 },
1078 };
1079
1080 static void usb_host_register_devices(void)
1081 {
1082 usb_qdev_register(&usb_host_dev_info);
1083 }
1084 device_init(usb_host_register_devices)
1085
1086 USBDevice *usb_host_device_open(const char *devname)
1087 {
1088 struct USBAutoFilter filter;
1089 USBDevice *dev;
1090 char *p;
1091
1092 dev = usb_create(NULL /* FIXME */, "usb-host");
1093
1094 if (strstr(devname, "auto:")) {
1095 if (parse_filter(devname, &filter) < 0) {
1096 goto fail;
1097 }
1098 } else {
1099 if ((p = strchr(devname, '.'))) {
1100 filter.bus_num = strtoul(devname, NULL, 0);
1101 filter.addr = strtoul(p + 1, NULL, 0);
1102 filter.vendor_id = 0;
1103 filter.product_id = 0;
1104 } else if ((p = strchr(devname, ':'))) {
1105 filter.bus_num = 0;
1106 filter.addr = 0;
1107 filter.vendor_id = strtoul(devname, NULL, 16);
1108 filter.product_id = strtoul(p + 1, NULL, 16);
1109 } else {
1110 goto fail;
1111 }
1112 }
1113
1114 qdev_prop_set_uint32(&dev->qdev, "hostbus", filter.bus_num);
1115 qdev_prop_set_uint32(&dev->qdev, "hostaddr", filter.addr);
1116 qdev_prop_set_uint32(&dev->qdev, "vendorid", filter.vendor_id);
1117 qdev_prop_set_uint32(&dev->qdev, "productid", filter.product_id);
1118 qdev_init_nofail(&dev->qdev);
1119 return dev;
1120
1121 fail:
1122 qdev_free(&dev->qdev);
1123 return NULL;
1124 }
1125
1126 int usb_host_device_close(const char *devname)
1127 {
1128 #if 0
1129 char product_name[PRODUCT_NAME_SZ];
1130 int bus_num, addr;
1131 USBHostDevice *s;
1132
1133 if (strstr(devname, "auto:")) {
1134 return usb_host_auto_del(devname);
1135 }
1136 if (usb_host_find_device(&bus_num, &addr, product_name,
1137 sizeof(product_name), devname) < 0) {
1138 return -1;
1139 }
1140 s = hostdev_find(bus_num, addr);
1141 if (s) {
1142 usb_device_delete_addr(s->bus_num, s->dev.addr);
1143 return 0;
1144 }
1145 #endif
1146
1147 return -1;
1148 }
1149
1150 static int get_tag_value(char *buf, int buf_size,
1151 const char *str, const char *tag,
1152 const char *stopchars)
1153 {
1154 const char *p;
1155 char *q;
1156 p = strstr(str, tag);
1157 if (!p) {
1158 return -1;
1159 }
1160 p += strlen(tag);
1161 while (qemu_isspace(*p)) {
1162 p++;
1163 }
1164 q = buf;
1165 while (*p != '\0' && !strchr(stopchars, *p)) {
1166 if ((q - buf) < (buf_size - 1)) {
1167 *q++ = *p;
1168 }
1169 p++;
1170 }
1171 *q = '\0';
1172 return q - buf;
1173 }
1174
1175 /*
1176 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1177 * host's USB devices. This is legacy support since many distributions
1178 * are moving to /sys/bus/usb
1179 */
1180 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1181 {
1182 FILE *f = NULL;
1183 char line[1024];
1184 char buf[1024];
1185 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1186 char product_name[512];
1187 int ret = 0;
1188
1189 if (!usb_host_device_path) {
1190 perror("husb: USB Host Device Path not set");
1191 goto the_end;
1192 }
1193 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1194 f = fopen(line, "r");
1195 if (!f) {
1196 perror("husb: cannot open devices file");
1197 goto the_end;
1198 }
1199
1200 device_count = 0;
1201 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1202 for(;;) {
1203 if (fgets(line, sizeof(line), f) == NULL) {
1204 break;
1205 }
1206 if (strlen(line) > 0) {
1207 line[strlen(line) - 1] = '\0';
1208 }
1209 if (line[0] == 'T' && line[1] == ':') {
1210 if (device_count && (vendor_id || product_id)) {
1211 /* New device. Add the previously discovered device. */
1212 ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
1213 product_id, product_name, speed);
1214 if (ret) {
1215 goto the_end;
1216 }
1217 }
1218 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0) {
1219 goto fail;
1220 }
1221 bus_num = atoi(buf);
1222 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0) {
1223 goto fail;
1224 }
1225 addr = atoi(buf);
1226 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0) {
1227 goto fail;
1228 }
1229 if (!strcmp(buf, "480")) {
1230 speed = USB_SPEED_HIGH;
1231 } else if (!strcmp(buf, "1.5")) {
1232 speed = USB_SPEED_LOW;
1233 } else {
1234 speed = USB_SPEED_FULL;
1235 }
1236 product_name[0] = '\0';
1237 class_id = 0xff;
1238 device_count++;
1239 product_id = 0;
1240 vendor_id = 0;
1241 } else if (line[0] == 'P' && line[1] == ':') {
1242 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0) {
1243 goto fail;
1244 }
1245 vendor_id = strtoul(buf, NULL, 16);
1246 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0) {
1247 goto fail;
1248 }
1249 product_id = strtoul(buf, NULL, 16);
1250 } else if (line[0] == 'S' && line[1] == ':') {
1251 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0) {
1252 goto fail;
1253 }
1254 pstrcpy(product_name, sizeof(product_name), buf);
1255 } else if (line[0] == 'D' && line[1] == ':') {
1256 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0) {
1257 goto fail;
1258 }
1259 class_id = strtoul(buf, NULL, 16);
1260 }
1261 fail: ;
1262 }
1263 if (device_count && (vendor_id || product_id)) {
1264 /* Add the last device. */
1265 ret = func(opaque, bus_num, addr, 0, class_id, vendor_id,
1266 product_id, product_name, speed);
1267 }
1268 the_end:
1269 if (f) {
1270 fclose(f);
1271 }
1272 return ret;
1273 }
1274
1275 /*
1276 * Read sys file-system device file
1277 *
1278 * @line address of buffer to put file contents in
1279 * @line_size size of line
1280 * @device_file path to device file (printf format string)
1281 * @device_name device being opened (inserted into device_file)
1282 *
1283 * @return 0 failed, 1 succeeded ('line' contains data)
1284 */
1285 static int usb_host_read_file(char *line, size_t line_size,
1286 const char *device_file, const char *device_name)
1287 {
1288 FILE *f;
1289 int ret = 0;
1290 char filename[PATH_MAX];
1291
1292 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
1293 device_file);
1294 f = fopen(filename, "r");
1295 if (f) {
1296 ret = fgets(line, line_size, f) != NULL;
1297 fclose(f);
1298 }
1299
1300 return ret;
1301 }
1302
1303 /*
1304 * Use /sys/bus/usb/devices/ directory to determine host's USB
1305 * devices.
1306 *
1307 * This code is based on Robert Schiele's original patches posted to
1308 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1309 */
1310 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1311 {
1312 DIR *dir = NULL;
1313 char line[1024];
1314 int bus_num, addr, devpath, speed, class_id, product_id, vendor_id;
1315 int ret = 0;
1316 char product_name[512];
1317 struct dirent *de;
1318
1319 dir = opendir(USBSYSBUS_PATH "/devices");
1320 if (!dir) {
1321 perror("husb: cannot open devices directory");
1322 goto the_end;
1323 }
1324
1325 while ((de = readdir(dir))) {
1326 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1327 char *tmpstr = de->d_name;
1328 if (!strncmp(de->d_name, "usb", 3)) {
1329 tmpstr += 3;
1330 }
1331 if (sscanf(tmpstr, "%d-%d", &bus_num, &devpath) < 1) {
1332 goto the_end;
1333 }
1334
1335 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name)) {
1336 goto the_end;
1337 }
1338 if (sscanf(line, "%d", &addr) != 1) {
1339 goto the_end;
1340 }
1341 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1342 de->d_name)) {
1343 goto the_end;
1344 }
1345 if (sscanf(line, "%x", &class_id) != 1) {
1346 goto the_end;
1347 }
1348
1349 if (!usb_host_read_file(line, sizeof(line), "idVendor",
1350 de->d_name)) {
1351 goto the_end;
1352 }
1353 if (sscanf(line, "%x", &vendor_id) != 1) {
1354 goto the_end;
1355 }
1356 if (!usb_host_read_file(line, sizeof(line), "idProduct",
1357 de->d_name)) {
1358 goto the_end;
1359 }
1360 if (sscanf(line, "%x", &product_id) != 1) {
1361 goto the_end;
1362 }
1363 if (!usb_host_read_file(line, sizeof(line), "product",
1364 de->d_name)) {
1365 *product_name = 0;
1366 } else {
1367 if (strlen(line) > 0) {
1368 line[strlen(line) - 1] = '\0';
1369 }
1370 pstrcpy(product_name, sizeof(product_name), line);
1371 }
1372
1373 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name)) {
1374 goto the_end;
1375 }
1376 if (!strcmp(line, "480\n")) {
1377 speed = USB_SPEED_HIGH;
1378 } else if (!strcmp(line, "1.5\n")) {
1379 speed = USB_SPEED_LOW;
1380 } else {
1381 speed = USB_SPEED_FULL;
1382 }
1383
1384 ret = func(opaque, bus_num, addr, devpath, class_id, vendor_id,
1385 product_id, product_name, speed);
1386 if (ret) {
1387 goto the_end;
1388 }
1389 }
1390 }
1391 the_end:
1392 if (dir) {
1393 closedir(dir);
1394 }
1395 return ret;
1396 }
1397
1398 /*
1399 * Determine how to access the host's USB devices and call the
1400 * specific support function.
1401 */
1402 static int usb_host_scan(void *opaque, USBScanFunc *func)
1403 {
1404 Monitor *mon = cur_mon;
1405 FILE *f = NULL;
1406 DIR *dir = NULL;
1407 int ret = 0;
1408 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1409 char devpath[PATH_MAX];
1410
1411 /* only check the host once */
1412 if (!usb_fs_type) {
1413 dir = opendir(USBSYSBUS_PATH "/devices");
1414 if (dir) {
1415 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1416 strcpy(devpath, USBDEVBUS_PATH);
1417 usb_fs_type = USB_FS_SYS;
1418 closedir(dir);
1419 DPRINTF(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1420 goto found_devices;
1421 }
1422 f = fopen(USBPROCBUS_PATH "/devices", "r");
1423 if (f) {
1424 /* devices found in /proc/bus/usb/ */
1425 strcpy(devpath, USBPROCBUS_PATH);
1426 usb_fs_type = USB_FS_PROC;
1427 fclose(f);
1428 DPRINTF(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1429 goto found_devices;
1430 }
1431 /* try additional methods if an access method hasn't been found yet */
1432 f = fopen(USBDEVBUS_PATH "/devices", "r");
1433 if (f) {
1434 /* devices found in /dev/bus/usb/ */
1435 strcpy(devpath, USBDEVBUS_PATH);
1436 usb_fs_type = USB_FS_DEV;
1437 fclose(f);
1438 DPRINTF(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1439 goto found_devices;
1440 }
1441 found_devices:
1442 if (!usb_fs_type) {
1443 if (mon) {
1444 monitor_printf(mon, "husb: unable to access USB devices\n");
1445 }
1446 return -ENOENT;
1447 }
1448
1449 /* the module setting (used later for opening devices) */
1450 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1451 strcpy(usb_host_device_path, devpath);
1452 if (mon) {
1453 monitor_printf(mon, "husb: using %s file-system with %s\n",
1454 fs_type[usb_fs_type], usb_host_device_path);
1455 }
1456 }
1457
1458 switch (usb_fs_type) {
1459 case USB_FS_PROC:
1460 case USB_FS_DEV:
1461 ret = usb_host_scan_dev(opaque, func);
1462 break;
1463 case USB_FS_SYS:
1464 ret = usb_host_scan_sys(opaque, func);
1465 break;
1466 default:
1467 ret = -EINVAL;
1468 break;
1469 }
1470 return ret;
1471 }
1472
1473 static QEMUTimer *usb_auto_timer;
1474
1475 static int usb_host_auto_scan(void *opaque, int bus_num, int addr, int devpath,
1476 int class_id, int vendor_id, int product_id,
1477 const char *product_name, int speed)
1478 {
1479 struct USBAutoFilter *f;
1480 struct USBHostDevice *s;
1481
1482 /* Ignore hubs */
1483 if (class_id == 9)
1484 return 0;
1485
1486 QTAILQ_FOREACH(s, &hostdevs, next) {
1487 f = &s->match;
1488
1489 if (f->bus_num > 0 && f->bus_num != bus_num) {
1490 continue;
1491 }
1492 if (f->addr > 0 && f->addr != addr) {
1493 continue;
1494 }
1495
1496 if (f->vendor_id > 0 && f->vendor_id != vendor_id) {
1497 continue;
1498 }
1499
1500 if (f->product_id > 0 && f->product_id != product_id) {
1501 continue;
1502 }
1503 /* We got a match */
1504
1505 /* Already attached ? */
1506 if (s->fd != -1) {
1507 return 0;
1508 }
1509 DPRINTF("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1510
1511 usb_host_open(s, bus_num, addr, devpath, product_name);
1512 }
1513
1514 return 0;
1515 }
1516
1517 static void usb_host_auto_check(void *unused)
1518 {
1519 struct USBHostDevice *s;
1520 int unconnected = 0;
1521
1522 usb_host_scan(NULL, usb_host_auto_scan);
1523
1524 QTAILQ_FOREACH(s, &hostdevs, next) {
1525 if (s->fd == -1) {
1526 unconnected++;
1527 }
1528 }
1529
1530 if (unconnected == 0) {
1531 /* nothing to watch */
1532 if (usb_auto_timer) {
1533 qemu_del_timer(usb_auto_timer);
1534 }
1535 return;
1536 }
1537
1538 if (!usb_auto_timer) {
1539 usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL);
1540 if (!usb_auto_timer) {
1541 return;
1542 }
1543 }
1544 qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000);
1545 }
1546
1547 /*
1548 * Autoconnect filter
1549 * Format:
1550 * auto:bus:dev[:vid:pid]
1551 * auto:bus.dev[:vid:pid]
1552 *
1553 * bus - bus number (dec, * means any)
1554 * dev - device number (dec, * means any)
1555 * vid - vendor id (hex, * means any)
1556 * pid - product id (hex, * means any)
1557 *
1558 * See 'lsusb' output.
1559 */
1560 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1561 {
1562 enum { BUS, DEV, VID, PID, DONE };
1563 const char *p = spec;
1564 int i;
1565
1566 f->bus_num = 0;
1567 f->addr = 0;
1568 f->vendor_id = 0;
1569 f->product_id = 0;
1570
1571 for (i = BUS; i < DONE; i++) {
1572 p = strpbrk(p, ":.");
1573 if (!p) {
1574 break;
1575 }
1576 p++;
1577
1578 if (*p == '*') {
1579 continue;
1580 }
1581 switch(i) {
1582 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1583 case DEV: f->addr = strtol(p, NULL, 10); break;
1584 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1585 case PID: f->product_id = strtol(p, NULL, 16); break;
1586 }
1587 }
1588
1589 if (i < DEV) {
1590 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1591 return -1;
1592 }
1593
1594 return 0;
1595 }
1596
1597 /**********************/
1598 /* USB host device info */
1599
1600 struct usb_class_info {
1601 int class;
1602 const char *class_name;
1603 };
1604
1605 static const struct usb_class_info usb_class_info[] = {
1606 { USB_CLASS_AUDIO, "Audio"},
1607 { USB_CLASS_COMM, "Communication"},
1608 { USB_CLASS_HID, "HID"},
1609 { USB_CLASS_HUB, "Hub" },
1610 { USB_CLASS_PHYSICAL, "Physical" },
1611 { USB_CLASS_PRINTER, "Printer" },
1612 { USB_CLASS_MASS_STORAGE, "Storage" },
1613 { USB_CLASS_CDC_DATA, "Data" },
1614 { USB_CLASS_APP_SPEC, "Application Specific" },
1615 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1616 { USB_CLASS_STILL_IMAGE, "Still Image" },
1617 { USB_CLASS_CSCID, "Smart Card" },
1618 { USB_CLASS_CONTENT_SEC, "Content Security" },
1619 { -1, NULL }
1620 };
1621
1622 static const char *usb_class_str(uint8_t class)
1623 {
1624 const struct usb_class_info *p;
1625 for(p = usb_class_info; p->class != -1; p++) {
1626 if (p->class == class) {
1627 break;
1628 }
1629 }
1630 return p->class_name;
1631 }
1632
1633 static void usb_info_device(Monitor *mon, int bus_num, int addr, int class_id,
1634 int vendor_id, int product_id,
1635 const char *product_name,
1636 int speed)
1637 {
1638 const char *class_str, *speed_str;
1639
1640 switch(speed) {
1641 case USB_SPEED_LOW:
1642 speed_str = "1.5";
1643 break;
1644 case USB_SPEED_FULL:
1645 speed_str = "12";
1646 break;
1647 case USB_SPEED_HIGH:
1648 speed_str = "480";
1649 break;
1650 default:
1651 speed_str = "?";
1652 break;
1653 }
1654
1655 monitor_printf(mon, " Device %d.%d, speed %s Mb/s\n",
1656 bus_num, addr, speed_str);
1657 class_str = usb_class_str(class_id);
1658 if (class_str) {
1659 monitor_printf(mon, " %s:", class_str);
1660 } else {
1661 monitor_printf(mon, " Class %02x:", class_id);
1662 }
1663 monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
1664 if (product_name[0] != '\0') {
1665 monitor_printf(mon, ", %s", product_name);
1666 }
1667 monitor_printf(mon, "\n");
1668 }
1669
1670 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1671 int devpath, int class_id,
1672 int vendor_id, int product_id,
1673 const char *product_name,
1674 int speed)
1675 {
1676 Monitor *mon = opaque;
1677
1678 usb_info_device(mon, bus_num, addr, class_id, vendor_id, product_id,
1679 product_name, speed);
1680 return 0;
1681 }
1682
1683 static void dec2str(int val, char *str, size_t size)
1684 {
1685 if (val == 0) {
1686 snprintf(str, size, "*");
1687 } else {
1688 snprintf(str, size, "%d", val);
1689 }
1690 }
1691
1692 static void hex2str(int val, char *str, size_t size)
1693 {
1694 if (val == 0) {
1695 snprintf(str, size, "*");
1696 } else {
1697 snprintf(str, size, "%04x", val);
1698 }
1699 }
1700
1701 void usb_host_info(Monitor *mon)
1702 {
1703 struct USBAutoFilter *f;
1704 struct USBHostDevice *s;
1705
1706 usb_host_scan(mon, usb_host_info_device);
1707
1708 if (QTAILQ_EMPTY(&hostdevs)) {
1709 return;
1710 }
1711
1712 monitor_printf(mon, " Auto filters:\n");
1713 QTAILQ_FOREACH(s, &hostdevs, next) {
1714 char bus[10], addr[10], vid[10], pid[10];
1715 f = &s->match;
1716 dec2str(f->bus_num, bus, sizeof(bus));
1717 dec2str(f->addr, addr, sizeof(addr));
1718 hex2str(f->vendor_id, vid, sizeof(vid));
1719 hex2str(f->product_id, pid, sizeof(pid));
1720 monitor_printf(mon, " Device %s.%s ID %s:%s\n",
1721 bus, addr, vid, pid);
1722 }
1723 }
various patches