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merage qemu master
[qemu/qemu-JZ.git] / usb-linux.c
blobfb1153bbd445e6ff08e0546da82fbe3d482c2fbd
1 /*
2 * Linux host USB redirector
3 *
4 * Copyright (c) 2005 Fabrice Bellard
5 *
6 * Copyright (c) 2008 Max Krasnyansky
7 * Support for host device auto connect & disconnect
8 * Major rewrite to support fully async operation
9 *
10 * Copyright 2008 TJ <linux@tjworld.net>
11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
12 * to the legacy /proc/bus/usb USB device discovery and handling
13 *
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this software and associated documentation files (the "Software"), to deal
16 * in the Software without restriction, including without limitation the rights
17 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
18 * copies of the Software, and to permit persons to whom the Software is
19 * furnished to do so, subject to the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
29 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
30 * THE SOFTWARE.
31 */
32
33 #include "qemu-common.h"
34 #include "qemu-timer.h"
35 #include "console.h"
36
37 #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 static int usb_host_find_device(int *pbus_num, int *paddr,
68 char *product_name, int product_name_size,
69 const char *devname);
70 //#define DEBUG
71
72 #ifdef DEBUG
73 #define dprintf printf
74 #else
75 #define dprintf(...)
76 #endif
77
78 #define USBDBG_DEVOPENED "husb: opened %s/devices\n"
79
80 #define USBPROCBUS_PATH "/proc/bus/usb"
81 #define PRODUCT_NAME_SZ 32
82 #define MAX_ENDPOINTS 16
83 #define USBDEVBUS_PATH "/dev/bus/usb"
84 #define USBSYSBUS_PATH "/sys/bus/usb"
85
86 static char *usb_host_device_path;
87
88 #define USB_FS_NONE 0
89 #define USB_FS_PROC 1
90 #define USB_FS_DEV 2
91 #define USB_FS_SYS 3
92
93 static int usb_fs_type;
94
95 /* endpoint association data */
96 struct endp_data {
97 uint8_t type;
98 uint8_t halted;
99 };
100
101 enum {
102 CTRL_STATE_IDLE = 0,
103 CTRL_STATE_SETUP,
104 CTRL_STATE_DATA,
105 CTRL_STATE_ACK
106 };
107
108 /*
109 * Control transfer state.
110 * Note that 'buffer' _must_ follow 'req' field because
111 * we need contigious buffer when we submit control URB.
112 */
113 struct ctrl_struct {
114 uint16_t len;
115 uint16_t offset;
116 uint8_t state;
117 struct usb_ctrlrequest req;
118 uint8_t buffer[1024];
119 };
120
121 typedef struct USBHostDevice {
122 USBDevice dev;
123 int fd;
124
125 uint8_t descr[1024];
126 int descr_len;
127 int configuration;
128 int ninterfaces;
129 int closing;
130
131 struct ctrl_struct ctrl;
132 struct endp_data endp_table[MAX_ENDPOINTS];
133
134 /* Host side address */
135 int bus_num;
136 int addr;
137
138 struct USBHostDevice *next;
139 } USBHostDevice;
140
141 static int is_isoc(USBHostDevice *s, int ep)
142 {
143 return s->endp_table[ep - 1].type == USBDEVFS_URB_TYPE_ISO;
144 }
145
146 static int is_halted(USBHostDevice *s, int ep)
147 {
148 return s->endp_table[ep - 1].halted;
149 }
150
151 static void clear_halt(USBHostDevice *s, int ep)
152 {
153 s->endp_table[ep - 1].halted = 0;
154 }
155
156 static void set_halt(USBHostDevice *s, int ep)
157 {
158 s->endp_table[ep - 1].halted = 1;
159 }
160
161 static USBHostDevice *hostdev_list;
162
163 static void hostdev_link(USBHostDevice *dev)
164 {
165 dev->next = hostdev_list;
166 hostdev_list = dev;
167 }
168
169 static void hostdev_unlink(USBHostDevice *dev)
170 {
171 USBHostDevice *pdev = hostdev_list;
172 USBHostDevice **prev = &hostdev_list;
173
174 while (pdev) {
175 if (pdev == dev) {
176 *prev = dev->next;
177 return;
178 }
179
180 prev = &pdev->next;
181 pdev = pdev->next;
182 }
183 }
184
185 static USBHostDevice *hostdev_find(int bus_num, int addr)
186 {
187 USBHostDevice *s = hostdev_list;
188 while (s) {
189 if (s->bus_num == bus_num && s->addr == addr)
190 return s;
191 s = s->next;
192 }
193 return NULL;
194 }
195
196 /*
197 * Async URB state.
198 * We always allocate one isoc descriptor even for bulk transfers
199 * to simplify allocation and casts.
200 */
201 typedef struct AsyncURB
202 {
203 struct usbdevfs_urb urb;
204 struct usbdevfs_iso_packet_desc isocpd;
205
206 USBPacket *packet;
207 USBHostDevice *hdev;
208 } AsyncURB;
209
210 static AsyncURB *async_alloc(void)
211 {
212 return (AsyncURB *) qemu_mallocz(sizeof(AsyncURB));
213 }
214
215 static void async_free(AsyncURB *aurb)
216 {
217 qemu_free(aurb);
218 }
219
220 static void async_complete_ctrl(USBHostDevice *s, USBPacket *p)
221 {
222 switch(s->ctrl.state) {
223 case CTRL_STATE_SETUP:
224 if (p->len < s->ctrl.len)
225 s->ctrl.len = p->len;
226 s->ctrl.state = CTRL_STATE_DATA;
227 p->len = 8;
228 break;
229
230 case CTRL_STATE_ACK:
231 s->ctrl.state = CTRL_STATE_IDLE;
232 p->len = 0;
233 break;
234
235 default:
236 break;
237 }
238 }
239
240 static void async_complete(void *opaque)
241 {
242 USBHostDevice *s = opaque;
243 AsyncURB *aurb;
244
245 while (1) {
246 USBPacket *p;
247
248 int r = ioctl(s->fd, USBDEVFS_REAPURBNDELAY, &aurb);
249 if (r < 0) {
250 if (errno == EAGAIN)
251 return;
252
253 if (errno == ENODEV && !s->closing) {
254 printf("husb: device %d.%d disconnected\n", s->bus_num, s->addr);
255 usb_device_del_addr(0, s->dev.addr);
256 return;
257 }
258
259 dprintf("husb: async. reap urb failed errno %d\n", errno);
260 return;
261 }
262
263 p = aurb->packet;
264
265 dprintf("husb: async completed. aurb %p status %d alen %d\n",
266 aurb, aurb->urb.status, aurb->urb.actual_length);
267
268 if (p) {
269 switch (aurb->urb.status) {
270 case 0:
271 p->len = aurb->urb.actual_length;
272 if (aurb->urb.type == USBDEVFS_URB_TYPE_CONTROL)
273 async_complete_ctrl(s, p);
274 break;
275
276 case -EPIPE:
277 set_halt(s, p->devep);
278 /* fall through */
279 default:
280 p->len = USB_RET_NAK;
281 break;
282 }
283
284 usb_packet_complete(p);
285 }
286
287 async_free(aurb);
288 }
289 }
290
291 static void async_cancel(USBPacket *unused, void *opaque)
292 {
293 AsyncURB *aurb = opaque;
294 USBHostDevice *s = aurb->hdev;
295
296 dprintf("husb: async cancel. aurb %p\n", aurb);
297
298 /* Mark it as dead (see async_complete above) */
299 aurb->packet = NULL;
300
301 int r = ioctl(s->fd, USBDEVFS_DISCARDURB, aurb);
302 if (r < 0) {
303 dprintf("husb: async. discard urb failed errno %d\n", errno);
304 }
305 }
306
307 static int usb_host_claim_interfaces(USBHostDevice *dev, int configuration)
308 {
309 int dev_descr_len, config_descr_len;
310 int interface, nb_interfaces, nb_configurations;
311 int ret, i;
312
313 if (configuration == 0) /* address state - ignore */
314 return 1;
315
316 dprintf("husb: claiming interfaces. config %d\n", configuration);
317
318 i = 0;
319 dev_descr_len = dev->descr[0];
320 if (dev_descr_len > dev->descr_len)
321 goto fail;
322 nb_configurations = dev->descr[17];
323
324 i += dev_descr_len;
325 while (i < dev->descr_len) {
326 dprintf("husb: i is %d, descr_len is %d, dl %d, dt %d\n", i, dev->descr_len,
327 dev->descr[i], dev->descr[i+1]);
328
329 if (dev->descr[i+1] != USB_DT_CONFIG) {
330 i += dev->descr[i];
331 continue;
332 }
333 config_descr_len = dev->descr[i];
334
335 printf("husb: config #%d need %d\n", dev->descr[i + 5], configuration);
336
337 if (configuration < 0 || configuration == dev->descr[i + 5]) {
338 configuration = dev->descr[i + 5];
339 break;
340 }
341
342 i += config_descr_len;
343 }
344
345 if (i >= dev->descr_len) {
346 fprintf(stderr, "husb: update iface failed. no matching configuration\n");
347 goto fail;
348 }
349 nb_interfaces = dev->descr[i + 4];
350
351 #ifdef USBDEVFS_DISCONNECT
352 /* earlier Linux 2.4 do not support that */
353 {
354 struct usbdevfs_ioctl ctrl;
355 for (interface = 0; interface < nb_interfaces; interface++) {
356 ctrl.ioctl_code = USBDEVFS_DISCONNECT;
357 ctrl.ifno = interface;
358 ret = ioctl(dev->fd, USBDEVFS_IOCTL, &ctrl);
359 if (ret < 0 && errno != ENODATA) {
360 perror("USBDEVFS_DISCONNECT");
361 goto fail;
362 }
363 }
364 }
365 #endif
366
367 /* XXX: only grab if all interfaces are free */
368 for (interface = 0; interface < nb_interfaces; interface++) {
369 ret = ioctl(dev->fd, USBDEVFS_CLAIMINTERFACE, &interface);
370 if (ret < 0) {
371 if (errno == EBUSY) {
372 printf("husb: update iface. device already grabbed\n");
373 } else {
374 perror("husb: failed to claim interface");
375 }
376 fail:
377 return 0;
378 }
379 }
380
381 printf("husb: %d interfaces claimed for configuration %d\n",
382 nb_interfaces, configuration);
383
384 dev->ninterfaces = nb_interfaces;
385 dev->configuration = configuration;
386 return 1;
387 }
388
389 static int usb_host_release_interfaces(USBHostDevice *s)
390 {
391 int ret, i;
392
393 dprintf("husb: releasing interfaces\n");
394
395 for (i = 0; i < s->ninterfaces; i++) {
396 ret = ioctl(s->fd, USBDEVFS_RELEASEINTERFACE, &i);
397 if (ret < 0) {
398 perror("husb: failed to release interface");
399 return 0;
400 }
401 }
402
403 return 1;
404 }
405
406 static void usb_host_handle_reset(USBDevice *dev)
407 {
408 USBHostDevice *s = (USBHostDevice *) dev;
409
410 dprintf("husb: reset device %u.%u\n", s->bus_num, s->addr);
411
412 ioctl(s->fd, USBDEVFS_RESET);
413
414 usb_host_claim_interfaces(s, s->configuration);
415 }
416
417 static void usb_host_handle_destroy(USBDevice *dev)
418 {
419 USBHostDevice *s = (USBHostDevice *)dev;
420
421 s->closing = 1;
422
423 qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
424
425 hostdev_unlink(s);
426
427 async_complete(s);
428
429 if (s->fd >= 0)
430 close(s->fd);
431
432 qemu_free(s);
433 }
434
435 static int usb_linux_update_endp_table(USBHostDevice *s);
436
437 static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
438 {
439 struct usbdevfs_urb *urb;
440 AsyncURB *aurb;
441 int ret;
442
443 aurb = async_alloc();
444 if (!aurb) {
445 dprintf("husb: async malloc failed\n");
446 return USB_RET_NAK;
447 }
448 aurb->hdev = s;
449 aurb->packet = p;
450
451 urb = &aurb->urb;
452
453 if (p->pid == USB_TOKEN_IN)
454 urb->endpoint = p->devep | 0x80;
455 else
456 urb->endpoint = p->devep;
457
458 if (is_halted(s, p->devep)) {
459 ret = ioctl(s->fd, USBDEVFS_CLEAR_HALT, &urb->endpoint);
460 if (ret < 0) {
461 dprintf("husb: failed to clear halt. ep 0x%x errno %d\n",
462 urb->endpoint, errno);
463 return USB_RET_NAK;
464 }
465 clear_halt(s, p->devep);
466 }
467
468 urb->buffer = p->data;
469 urb->buffer_length = p->len;
470
471 if (is_isoc(s, p->devep)) {
472 /* Setup ISOC transfer */
473 urb->type = USBDEVFS_URB_TYPE_ISO;
474 urb->flags = USBDEVFS_URB_ISO_ASAP;
475 urb->number_of_packets = 1;
476 urb->iso_frame_desc[0].length = p->len;
477 } else {
478 /* Setup bulk transfer */
479 urb->type = USBDEVFS_URB_TYPE_BULK;
480 }
481
482 urb->usercontext = s;
483
484 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
485
486 dprintf("husb: data submit. ep 0x%x len %u aurb %p\n", urb->endpoint, p->len, aurb);
487
488 if (ret < 0) {
489 dprintf("husb: submit failed. errno %d\n", errno);
490 async_free(aurb);
491
492 switch(errno) {
493 case ETIMEDOUT:
494 return USB_RET_NAK;
495 case EPIPE:
496 default:
497 return USB_RET_STALL;
498 }
499 }
500
501 usb_defer_packet(p, async_cancel, aurb);
502 return USB_RET_ASYNC;
503 }
504
505 static int ctrl_error(void)
506 {
507 if (errno == ETIMEDOUT)
508 return USB_RET_NAK;
509 else
510 return USB_RET_STALL;
511 }
512
513 static int usb_host_set_address(USBHostDevice *s, int addr)
514 {
515 dprintf("husb: ctrl set addr %u\n", addr);
516 s->dev.addr = addr;
517 return 0;
518 }
519
520 static int usb_host_set_config(USBHostDevice *s, int config)
521 {
522 usb_host_release_interfaces(s);
523
524 int ret = ioctl(s->fd, USBDEVFS_SETCONFIGURATION, &config);
525
526 dprintf("husb: ctrl set config %d ret %d errno %d\n", config, ret, errno);
527
528 if (ret < 0)
529 return ctrl_error();
530
531 usb_host_claim_interfaces(s, config);
532 return 0;
533 }
534
535 static int usb_host_set_interface(USBHostDevice *s, int iface, int alt)
536 {
537 struct usbdevfs_setinterface si;
538 int ret;
539
540 si.interface = iface;
541 si.altsetting = alt;
542 ret = ioctl(s->fd, USBDEVFS_SETINTERFACE, &si);
543
544 dprintf("husb: ctrl set iface %d altset %d ret %d errno %d\n",
545 iface, alt, ret, errno);
546
547 if (ret < 0)
548 return ctrl_error();
549
550 usb_linux_update_endp_table(s);
551 return 0;
552 }
553
554 static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
555 {
556 struct usbdevfs_urb *urb;
557 AsyncURB *aurb;
558 int ret, value, index;
559
560 /*
561 * Process certain standard device requests.
562 * These are infrequent and are processed synchronously.
563 */
564 value = le16_to_cpu(s->ctrl.req.wValue);
565 index = le16_to_cpu(s->ctrl.req.wIndex);
566
567 dprintf("husb: ctrl type 0x%x req 0x%x val 0x%x index %u len %u\n",
568 s->ctrl.req.bRequestType, s->ctrl.req.bRequest, value, index,
569 s->ctrl.len);
570
571 if (s->ctrl.req.bRequestType == 0) {
572 switch (s->ctrl.req.bRequest) {
573 case USB_REQ_SET_ADDRESS:
574 return usb_host_set_address(s, value);
575
576 case USB_REQ_SET_CONFIGURATION:
577 return usb_host_set_config(s, value & 0xff);
578 }
579 }
580
581 if (s->ctrl.req.bRequestType == 1 &&
582 s->ctrl.req.bRequest == USB_REQ_SET_INTERFACE)
583 return usb_host_set_interface(s, index, value);
584
585 /* The rest are asynchronous */
586
587 aurb = async_alloc();
588 if (!aurb) {
589 dprintf("husb: async malloc failed\n");
590 return USB_RET_NAK;
591 }
592 aurb->hdev = s;
593 aurb->packet = p;
594
595 /*
596 * Setup ctrl transfer.
597 *
598 * s->ctrl is layed out such that data buffer immediately follows
599 * 'req' struct which is exactly what usbdevfs expects.
600 */
601 urb = &aurb->urb;
602
603 urb->type = USBDEVFS_URB_TYPE_CONTROL;
604 urb->endpoint = p->devep;
605
606 urb->buffer = &s->ctrl.req;
607 urb->buffer_length = 8 + s->ctrl.len;
608
609 urb->usercontext = s;
610
611 ret = ioctl(s->fd, USBDEVFS_SUBMITURB, urb);
612
613 dprintf("husb: submit ctrl. len %u aurb %p\n", urb->buffer_length, aurb);
614
615 if (ret < 0) {
616 dprintf("husb: submit failed. errno %d\n", errno);
617 async_free(aurb);
618
619 switch(errno) {
620 case ETIMEDOUT:
621 return USB_RET_NAK;
622 case EPIPE:
623 default:
624 return USB_RET_STALL;
625 }
626 }
627
628 usb_defer_packet(p, async_cancel, aurb);
629 return USB_RET_ASYNC;
630 }
631
632 static int do_token_setup(USBDevice *dev, USBPacket *p)
633 {
634 USBHostDevice *s = (USBHostDevice *) dev;
635 int ret = 0;
636
637 if (p->len != 8)
638 return USB_RET_STALL;
639
640 memcpy(&s->ctrl.req, p->data, 8);
641 s->ctrl.len = le16_to_cpu(s->ctrl.req.wLength);
642 s->ctrl.offset = 0;
643 s->ctrl.state = CTRL_STATE_SETUP;
644
645 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
646 ret = usb_host_handle_control(s, p);
647 if (ret < 0)
648 return ret;
649
650 if (ret < s->ctrl.len)
651 s->ctrl.len = ret;
652 s->ctrl.state = CTRL_STATE_DATA;
653 } else {
654 if (s->ctrl.len == 0)
655 s->ctrl.state = CTRL_STATE_ACK;
656 else
657 s->ctrl.state = CTRL_STATE_DATA;
658 }
659
660 return ret;
661 }
662
663 static int do_token_in(USBDevice *dev, USBPacket *p)
664 {
665 USBHostDevice *s = (USBHostDevice *) dev;
666 int ret = 0;
667
668 if (p->devep != 0)
669 return usb_host_handle_data(s, p);
670
671 switch(s->ctrl.state) {
672 case CTRL_STATE_ACK:
673 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
674 ret = usb_host_handle_control(s, p);
675 if (ret == USB_RET_ASYNC)
676 return USB_RET_ASYNC;
677
678 s->ctrl.state = CTRL_STATE_IDLE;
679 return ret > 0 ? 0 : ret;
680 }
681
682 return 0;
683
684 case CTRL_STATE_DATA:
685 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
686 int len = s->ctrl.len - s->ctrl.offset;
687 if (len > p->len)
688 len = p->len;
689 memcpy(p->data, s->ctrl.buffer + s->ctrl.offset, len);
690 s->ctrl.offset += len;
691 if (s->ctrl.offset >= s->ctrl.len)
692 s->ctrl.state = CTRL_STATE_ACK;
693 return len;
694 }
695
696 s->ctrl.state = CTRL_STATE_IDLE;
697 return USB_RET_STALL;
698
699 default:
700 return USB_RET_STALL;
701 }
702 }
703
704 static int do_token_out(USBDevice *dev, USBPacket *p)
705 {
706 USBHostDevice *s = (USBHostDevice *) dev;
707
708 if (p->devep != 0)
709 return usb_host_handle_data(s, p);
710
711 switch(s->ctrl.state) {
712 case CTRL_STATE_ACK:
713 if (s->ctrl.req.bRequestType & USB_DIR_IN) {
714 s->ctrl.state = CTRL_STATE_IDLE;
715 /* transfer OK */
716 } else {
717 /* ignore additional output */
718 }
719 return 0;
720
721 case CTRL_STATE_DATA:
722 if (!(s->ctrl.req.bRequestType & USB_DIR_IN)) {
723 int len = s->ctrl.len - s->ctrl.offset;
724 if (len > p->len)
725 len = p->len;
726 memcpy(s->ctrl.buffer + s->ctrl.offset, p->data, len);
727 s->ctrl.offset += len;
728 if (s->ctrl.offset >= s->ctrl.len)
729 s->ctrl.state = CTRL_STATE_ACK;
730 return len;
731 }
732
733 s->ctrl.state = CTRL_STATE_IDLE;
734 return USB_RET_STALL;
735
736 default:
737 return USB_RET_STALL;
738 }
739 }
740
741 /*
742 * Packet handler.
743 * Called by the HC (host controller).
744 *
745 * Returns length of the transaction or one of the USB_RET_XXX codes.
746 */
747 static int usb_host_handle_packet(USBDevice *s, USBPacket *p)
748 {
749 switch(p->pid) {
750 case USB_MSG_ATTACH:
751 s->state = USB_STATE_ATTACHED;
752 return 0;
753
754 case USB_MSG_DETACH:
755 s->state = USB_STATE_NOTATTACHED;
756 return 0;
757
758 case USB_MSG_RESET:
759 s->remote_wakeup = 0;
760 s->addr = 0;
761 s->state = USB_STATE_DEFAULT;
762 s->handle_reset(s);
763 return 0;
764 }
765
766 /* Rest of the PIDs must match our address */
767 if (s->state < USB_STATE_DEFAULT || p->devaddr != s->addr)
768 return USB_RET_NODEV;
769
770 switch (p->pid) {
771 case USB_TOKEN_SETUP:
772 return do_token_setup(s, p);
773
774 case USB_TOKEN_IN:
775 return do_token_in(s, p);
776
777 case USB_TOKEN_OUT:
778 return do_token_out(s, p);
779
780 default:
781 return USB_RET_STALL;
782 }
783 }
784
785 /* returns 1 on problem encountered or 0 for success */
786 static int usb_linux_update_endp_table(USBHostDevice *s)
787 {
788 uint8_t *descriptors;
789 uint8_t devep, type, configuration, alt_interface;
790 struct usb_ctrltransfer ct;
791 int interface, ret, length, i;
792
793 ct.bRequestType = USB_DIR_IN;
794 ct.bRequest = USB_REQ_GET_CONFIGURATION;
795 ct.wValue = 0;
796 ct.wIndex = 0;
797 ct.wLength = 1;
798 ct.data = &configuration;
799 ct.timeout = 50;
800
801 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
802 if (ret < 0) {
803 perror("usb_linux_update_endp_table");
804 return 1;
805 }
806
807 /* in address state */
808 if (configuration == 0)
809 return 1;
810
811 /* get the desired configuration, interface, and endpoint descriptors
812 * from device description */
813 descriptors = &s->descr[18];
814 length = s->descr_len - 18;
815 i = 0;
816
817 if (descriptors[i + 1] != USB_DT_CONFIG ||
818 descriptors[i + 5] != configuration) {
819 dprintf("invalid descriptor data - configuration\n");
820 return 1;
821 }
822 i += descriptors[i];
823
824 while (i < length) {
825 if (descriptors[i + 1] != USB_DT_INTERFACE ||
826 (descriptors[i + 1] == USB_DT_INTERFACE &&
827 descriptors[i + 4] == 0)) {
828 i += descriptors[i];
829 continue;
830 }
831
832 interface = descriptors[i + 2];
833
834 ct.bRequestType = USB_DIR_IN | USB_RECIP_INTERFACE;
835 ct.bRequest = USB_REQ_GET_INTERFACE;
836 ct.wValue = 0;
837 ct.wIndex = interface;
838 ct.wLength = 1;
839 ct.data = &alt_interface;
840 ct.timeout = 50;
841
842 ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
843 if (ret < 0) {
844 perror("usb_linux_update_endp_table");
845 return 1;
846 }
847
848 /* the current interface descriptor is the active interface
849 * and has endpoints */
850 if (descriptors[i + 3] != alt_interface) {
851 i += descriptors[i];
852 continue;
853 }
854
855 /* advance to the endpoints */
856 while (i < length && descriptors[i +1] != USB_DT_ENDPOINT)
857 i += descriptors[i];
858
859 if (i >= length)
860 break;
861
862 while (i < length) {
863 if (descriptors[i + 1] != USB_DT_ENDPOINT)
864 break;
865
866 devep = descriptors[i + 2];
867 switch (descriptors[i + 3] & 0x3) {
868 case 0x00:
869 type = USBDEVFS_URB_TYPE_CONTROL;
870 break;
871 case 0x01:
872 type = USBDEVFS_URB_TYPE_ISO;
873 break;
874 case 0x02:
875 type = USBDEVFS_URB_TYPE_BULK;
876 break;
877 case 0x03:
878 type = USBDEVFS_URB_TYPE_INTERRUPT;
879 break;
880 default:
881 dprintf("usb_host: malformed endpoint type\n");
882 type = USBDEVFS_URB_TYPE_BULK;
883 }
884 s->endp_table[(devep & 0xf) - 1].type = type;
885 s->endp_table[(devep & 0xf) - 1].halted = 0;
886
887 i += descriptors[i];
888 }
889 }
890 return 0;
891 }
892
893 static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *prod_name)
894 {
895 int fd = -1, ret;
896 USBHostDevice *dev = NULL;
897 struct usbdevfs_connectinfo ci;
898 char buf[1024];
899
900 dev = qemu_mallocz(sizeof(USBHostDevice));
901 if (!dev)
902 goto fail;
903
904 dev->bus_num = bus_num;
905 dev->addr = addr;
906
907 printf("husb: open device %d.%d\n", bus_num, addr);
908
909 if (!usb_host_device_path) {
910 perror("husb: USB Host Device Path not set");
911 goto fail;
912 }
913 snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
914 bus_num, addr);
915 fd = open(buf, O_RDWR | O_NONBLOCK);
916 if (fd < 0) {
917 perror(buf);
918 goto fail;
919 }
920 dprintf("husb: opened %s\n", buf);
921
922 /* read the device description */
923 dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
924 if (dev->descr_len <= 0) {
925 perror("husb: reading device data failed");
926 goto fail;
927 }
928
929 #ifdef DEBUG
930 {
931 int x;
932 printf("=== begin dumping device descriptor data ===\n");
933 for (x = 0; x < dev->descr_len; x++)
934 printf("%02x ", dev->descr[x]);
935 printf("\n=== end dumping device descriptor data ===\n");
936 }
937 #endif
938
939 dev->fd = fd;
940
941 /*
942 * Initial configuration is -1 which makes us claim first
943 * available config. We used to start with 1, which does not
944 * always work. I've seen devices where first config starts
945 * with 2.
946 */
947 if (!usb_host_claim_interfaces(dev, -1))
948 goto fail;
949
950 ret = ioctl(fd, USBDEVFS_CONNECTINFO, &ci);
951 if (ret < 0) {
952 perror("usb_host_device_open: USBDEVFS_CONNECTINFO");
953 goto fail;
954 }
955
956 printf("husb: grabbed usb device %d.%d\n", bus_num, addr);
957
958 ret = usb_linux_update_endp_table(dev);
959 if (ret)
960 goto fail;
961
962 if (ci.slow)
963 dev->dev.speed = USB_SPEED_LOW;
964 else
965 dev->dev.speed = USB_SPEED_HIGH;
966
967 dev->dev.handle_packet = usb_host_handle_packet;
968 dev->dev.handle_reset = usb_host_handle_reset;
969 dev->dev.handle_destroy = usb_host_handle_destroy;
970
971 if (!prod_name || prod_name[0] == '\0')
972 snprintf(dev->dev.devname, sizeof(dev->dev.devname),
973 "host:%d.%d", bus_num, addr);
974 else
975 pstrcpy(dev->dev.devname, sizeof(dev->dev.devname),
976 prod_name);
977
978 /* USB devio uses 'write' flag to check for async completions */
979 qemu_set_fd_handler(dev->fd, NULL, async_complete, dev);
980
981 hostdev_link(dev);
982
983 return (USBDevice *) dev;
984
985 fail:
986 if (dev)
987 qemu_free(dev);
988
989 close(fd);
990 return NULL;
991 }
992
993 static int usb_host_auto_add(const char *spec);
994 static int usb_host_auto_del(const char *spec);
995
996 USBDevice *usb_host_device_open(const char *devname)
997 {
998 int bus_num, addr;
999 char product_name[PRODUCT_NAME_SZ];
1000
1001 if (strstr(devname, "auto:")) {
1002 usb_host_auto_add(devname);
1003 return NULL;
1004 }
1005
1006 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1007 devname) < 0)
1008 return NULL;
1009
1010 if (hostdev_find(bus_num, addr)) {
1011 term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
1012 return NULL;
1013 }
1014
1015 return usb_host_device_open_addr(bus_num, addr, product_name);
1016 }
1017
1018 int usb_host_device_close(const char *devname)
1019 {
1020 char product_name[PRODUCT_NAME_SZ];
1021 int bus_num, addr;
1022 USBHostDevice *s;
1023
1024 if (strstr(devname, "auto:"))
1025 return usb_host_auto_del(devname);
1026
1027 if (usb_host_find_device(&bus_num, &addr, product_name, sizeof(product_name),
1028 devname) < 0)
1029 return -1;
1030
1031 s = hostdev_find(bus_num, addr);
1032 if (s) {
1033 usb_device_del_addr(0, s->dev.addr);
1034 return 0;
1035 }
1036
1037 return -1;
1038 }
1039
1040 static int get_tag_value(char *buf, int buf_size,
1041 const char *str, const char *tag,
1042 const char *stopchars)
1043 {
1044 const char *p;
1045 char *q;
1046 p = strstr(str, tag);
1047 if (!p)
1048 return -1;
1049 p += strlen(tag);
1050 while (qemu_isspace(*p))
1051 p++;
1052 q = buf;
1053 while (*p != '\0' && !strchr(stopchars, *p)) {
1054 if ((q - buf) < (buf_size - 1))
1055 *q++ = *p;
1056 p++;
1057 }
1058 *q = '\0';
1059 return q - buf;
1060 }
1061
1062 /*
1063 * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
1064 * host's USB devices. This is legacy support since many distributions
1065 * are moving to /sys/bus/usb
1066 */
1067 static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
1068 {
1069 FILE *f = 0;
1070 char line[1024];
1071 char buf[1024];
1072 int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
1073 char product_name[512];
1074 int ret = 0;
1075
1076 if (!usb_host_device_path) {
1077 perror("husb: USB Host Device Path not set");
1078 goto the_end;
1079 }
1080 snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
1081 f = fopen(line, "r");
1082 if (!f) {
1083 perror("husb: cannot open devices file");
1084 goto the_end;
1085 }
1086
1087 device_count = 0;
1088 bus_num = addr = speed = class_id = product_id = vendor_id = 0;
1089 for(;;) {
1090 if (fgets(line, sizeof(line), f) == NULL)
1091 break;
1092 if (strlen(line) > 0)
1093 line[strlen(line) - 1] = '\0';
1094 if (line[0] == 'T' && line[1] == ':') {
1095 if (device_count && (vendor_id || product_id)) {
1096 /* New device. Add the previously discovered device. */
1097 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1098 product_id, product_name, speed);
1099 if (ret)
1100 goto the_end;
1101 }
1102 if (get_tag_value(buf, sizeof(buf), line, "Bus=", " ") < 0)
1103 goto fail;
1104 bus_num = atoi(buf);
1105 if (get_tag_value(buf, sizeof(buf), line, "Dev#=", " ") < 0)
1106 goto fail;
1107 addr = atoi(buf);
1108 if (get_tag_value(buf, sizeof(buf), line, "Spd=", " ") < 0)
1109 goto fail;
1110 if (!strcmp(buf, "480"))
1111 speed = USB_SPEED_HIGH;
1112 else if (!strcmp(buf, "1.5"))
1113 speed = USB_SPEED_LOW;
1114 else
1115 speed = USB_SPEED_FULL;
1116 product_name[0] = '\0';
1117 class_id = 0xff;
1118 device_count++;
1119 product_id = 0;
1120 vendor_id = 0;
1121 } else if (line[0] == 'P' && line[1] == ':') {
1122 if (get_tag_value(buf, sizeof(buf), line, "Vendor=", " ") < 0)
1123 goto fail;
1124 vendor_id = strtoul(buf, NULL, 16);
1125 if (get_tag_value(buf, sizeof(buf), line, "ProdID=", " ") < 0)
1126 goto fail;
1127 product_id = strtoul(buf, NULL, 16);
1128 } else if (line[0] == 'S' && line[1] == ':') {
1129 if (get_tag_value(buf, sizeof(buf), line, "Product=", "") < 0)
1130 goto fail;
1131 pstrcpy(product_name, sizeof(product_name), buf);
1132 } else if (line[0] == 'D' && line[1] == ':') {
1133 if (get_tag_value(buf, sizeof(buf), line, "Cls=", " (") < 0)
1134 goto fail;
1135 class_id = strtoul(buf, NULL, 16);
1136 }
1137 fail: ;
1138 }
1139 if (device_count && (vendor_id || product_id)) {
1140 /* Add the last device. */
1141 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1142 product_id, product_name, speed);
1143 }
1144 the_end:
1145 if (f)
1146 fclose(f);
1147 return ret;
1148 }
1149
1150 /*
1151 * Read sys file-system device file
1152 *
1153 * @line address of buffer to put file contents in
1154 * @line_size size of line
1155 * @device_file path to device file (printf format string)
1156 * @device_name device being opened (inserted into device_file)
1157 *
1158 * @return 0 failed, 1 succeeded ('line' contains data)
1159 */
1160 static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
1161 {
1162 FILE *f;
1163 int ret = 0;
1164 char filename[PATH_MAX];
1165
1166 snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
1167 device_file);
1168 f = fopen(filename, "r");
1169 if (f) {
1170 fgets(line, line_size, f);
1171 fclose(f);
1172 ret = 1;
1173 } else {
1174 term_printf("husb: could not open %s\n", filename);
1175 }
1176
1177 return ret;
1178 }
1179
1180 /*
1181 * Use /sys/bus/usb/devices/ directory to determine host's USB
1182 * devices.
1183 *
1184 * This code is based on Robert Schiele's original patches posted to
1185 * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
1186 */
1187 static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
1188 {
1189 DIR *dir = 0;
1190 char line[1024];
1191 int bus_num, addr, speed, class_id, product_id, vendor_id;
1192 int ret = 0;
1193 char product_name[512];
1194 struct dirent *de;
1195
1196 dir = opendir(USBSYSBUS_PATH "/devices");
1197 if (!dir) {
1198 perror("husb: cannot open devices directory");
1199 goto the_end;
1200 }
1201
1202 while ((de = readdir(dir))) {
1203 if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
1204 char *tmpstr = de->d_name;
1205 if (!strncmp(de->d_name, "usb", 3))
1206 tmpstr += 3;
1207 bus_num = atoi(tmpstr);
1208
1209 if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name))
1210 goto the_end;
1211 if (sscanf(line, "%d", &addr) != 1)
1212 goto the_end;
1213
1214 if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
1215 de->d_name))
1216 goto the_end;
1217 if (sscanf(line, "%x", &class_id) != 1)
1218 goto the_end;
1219
1220 if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name))
1221 goto the_end;
1222 if (sscanf(line, "%x", &vendor_id) != 1)
1223 goto the_end;
1224
1225 if (!usb_host_read_file(line, sizeof(line), "idProduct",
1226 de->d_name))
1227 goto the_end;
1228 if (sscanf(line, "%x", &product_id) != 1)
1229 goto the_end;
1230
1231 if (!usb_host_read_file(line, sizeof(line), "product",
1232 de->d_name)) {
1233 *product_name = 0;
1234 } else {
1235 if (strlen(line) > 0)
1236 line[strlen(line) - 1] = '\0';
1237 pstrcpy(product_name, sizeof(product_name), line);
1238 }
1239
1240 if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name))
1241 goto the_end;
1242 if (!strcmp(line, "480\n"))
1243 speed = USB_SPEED_HIGH;
1244 else if (!strcmp(line, "1.5\n"))
1245 speed = USB_SPEED_LOW;
1246 else
1247 speed = USB_SPEED_FULL;
1248
1249 ret = func(opaque, bus_num, addr, class_id, vendor_id,
1250 product_id, product_name, speed);
1251 if (ret)
1252 goto the_end;
1253 }
1254 }
1255 the_end:
1256 if (dir)
1257 closedir(dir);
1258 return ret;
1259 }
1260
1261 /*
1262 * Determine how to access the host's USB devices and call the
1263 * specific support function.
1264 */
1265 static int usb_host_scan(void *opaque, USBScanFunc *func)
1266 {
1267 FILE *f = 0;
1268 DIR *dir = 0;
1269 int ret = 0;
1270 const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
1271 char devpath[PATH_MAX];
1272
1273 /* only check the host once */
1274 if (!usb_fs_type) {
1275 f = fopen(USBPROCBUS_PATH "/devices", "r");
1276 if (f) {
1277 /* devices found in /proc/bus/usb/ */
1278 strcpy(devpath, USBPROCBUS_PATH);
1279 usb_fs_type = USB_FS_PROC;
1280 fclose(f);
1281 dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
1282 goto found_devices;
1283 }
1284 /* try additional methods if an access method hasn't been found yet */
1285 f = fopen(USBDEVBUS_PATH "/devices", "r");
1286 if (f) {
1287 /* devices found in /dev/bus/usb/ */
1288 strcpy(devpath, USBDEVBUS_PATH);
1289 usb_fs_type = USB_FS_DEV;
1290 fclose(f);
1291 dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
1292 goto found_devices;
1293 }
1294 dir = opendir(USBSYSBUS_PATH "/devices");
1295 if (dir) {
1296 /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
1297 strcpy(devpath, USBDEVBUS_PATH);
1298 usb_fs_type = USB_FS_SYS;
1299 closedir(dir);
1300 dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
1301 goto found_devices;
1302 }
1303 found_devices:
1304 if (!usb_fs_type) {
1305 term_printf("husb: unable to access USB devices\n");
1306 return -ENOENT;
1307 }
1308
1309 /* the module setting (used later for opening devices) */
1310 usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
1311 if (usb_host_device_path) {
1312 strcpy(usb_host_device_path, devpath);
1313 term_printf("husb: using %s file-system with %s\n", fs_type[usb_fs_type], usb_host_device_path);
1314 } else {
1315 /* out of memory? */
1316 perror("husb: unable to allocate memory for device path");
1317 return -ENOMEM;
1318 }
1319 }
1320
1321 switch (usb_fs_type) {
1322 case USB_FS_PROC:
1323 case USB_FS_DEV:
1324 ret = usb_host_scan_dev(opaque, func);
1325 break;
1326 case USB_FS_SYS:
1327 ret = usb_host_scan_sys(opaque, func);
1328 break;
1329 default:
1330 ret = -EINVAL;
1331 break;
1332 }
1333 return ret;
1334 }
1335
1336 struct USBAutoFilter {
1337 struct USBAutoFilter *next;
1338 int bus_num;
1339 int addr;
1340 int vendor_id;
1341 int product_id;
1342 };
1343
1344 static QEMUTimer *usb_auto_timer;
1345 static struct USBAutoFilter *usb_auto_filter;
1346
1347 static int usb_host_auto_scan(void *opaque, int bus_num, int addr,
1348 int class_id, int vendor_id, int product_id,
1349 const char *product_name, int speed)
1350 {
1351 struct USBAutoFilter *f;
1352 struct USBDevice *dev;
1353
1354 /* Ignore hubs */
1355 if (class_id == 9)
1356 return 0;
1357
1358 for (f = usb_auto_filter; f; f = f->next) {
1359 if (f->bus_num >= 0 && f->bus_num != bus_num)
1360 continue;
1361
1362 if (f->addr >= 0 && f->addr != addr)
1363 continue;
1364
1365 if (f->vendor_id >= 0 && f->vendor_id != vendor_id)
1366 continue;
1367
1368 if (f->product_id >= 0 && f->product_id != product_id)
1369 continue;
1370
1371 /* We got a match */
1372
1373 /* Allredy attached ? */
1374 if (hostdev_find(bus_num, addr))
1375 return 0;
1376
1377 dprintf("husb: auto open: bus_num %d addr %d\n", bus_num, addr);
1378
1379 dev = usb_host_device_open_addr(bus_num, addr, product_name);
1380 if (dev)
1381 usb_device_add_dev(dev);
1382 }
1383
1384 return 0;
1385 }
1386
1387 static void usb_host_auto_timer(void *unused)
1388 {
1389 usb_host_scan(NULL, usb_host_auto_scan);
1390 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1391 }
1392
1393 /*
1394 * Autoconnect filter
1395 * Format:
1396 * auto:bus:dev[:vid:pid]
1397 * auto:bus.dev[:vid:pid]
1398 *
1399 * bus - bus number (dec, * means any)
1400 * dev - device number (dec, * means any)
1401 * vid - vendor id (hex, * means any)
1402 * pid - product id (hex, * means any)
1403 *
1404 * See 'lsusb' output.
1405 */
1406 static int parse_filter(const char *spec, struct USBAutoFilter *f)
1407 {
1408 enum { BUS, DEV, VID, PID, DONE };
1409 const char *p = spec;
1410 int i;
1411
1412 f->bus_num = -1;
1413 f->addr = -1;
1414 f->vendor_id = -1;
1415 f->product_id = -1;
1416
1417 for (i = BUS; i < DONE; i++) {
1418 p = strpbrk(p, ":.");
1419 if (!p) break;
1420 p++;
1421
1422 if (*p == '*')
1423 continue;
1424
1425 switch(i) {
1426 case BUS: f->bus_num = strtol(p, NULL, 10); break;
1427 case DEV: f->addr = strtol(p, NULL, 10); break;
1428 case VID: f->vendor_id = strtol(p, NULL, 16); break;
1429 case PID: f->product_id = strtol(p, NULL, 16); break;
1430 }
1431 }
1432
1433 if (i < DEV) {
1434 fprintf(stderr, "husb: invalid auto filter spec %s\n", spec);
1435 return -1;
1436 }
1437
1438 return 0;
1439 }
1440
1441 static int match_filter(const struct USBAutoFilter *f1,
1442 const struct USBAutoFilter *f2)
1443 {
1444 return f1->bus_num == f2->bus_num &&
1445 f1->addr == f2->addr &&
1446 f1->vendor_id == f2->vendor_id &&
1447 f1->product_id == f2->product_id;
1448 }
1449
1450 static int usb_host_auto_add(const char *spec)
1451 {
1452 struct USBAutoFilter filter, *f;
1453
1454 if (parse_filter(spec, &filter) < 0)
1455 return -1;
1456
1457 f = qemu_mallocz(sizeof(*f));
1458 if (!f) {
1459 fprintf(stderr, "husb: failed to allocate auto filter\n");
1460 return -1;
1461 }
1462
1463 *f = filter;
1464
1465 if (!usb_auto_filter) {
1466 /*
1467 * First entry. Init and start the monitor.
1468 * Right now we're using timer to check for new devices.
1469 * If this turns out to be too expensive we can move that into a
1470 * separate thread.
1471 */
1472 usb_auto_timer = qemu_new_timer(rt_clock, usb_host_auto_timer, NULL);
1473 if (!usb_auto_timer) {
1474 fprintf(stderr, "husb: failed to allocate auto scan timer\n");
1475 qemu_free(f);
1476 return -1;
1477 }
1478
1479 /* Check for new devices every two seconds */
1480 qemu_mod_timer(usb_auto_timer, qemu_get_clock(rt_clock) + 2000);
1481 }
1482
1483 dprintf("husb: added auto filter: bus_num %d addr %d vid %d pid %d\n",
1484 f->bus_num, f->addr, f->vendor_id, f->product_id);
1485
1486 f->next = usb_auto_filter;
1487 usb_auto_filter = f;
1488
1489 return 0;
1490 }
1491
1492 static int usb_host_auto_del(const char *spec)
1493 {
1494 struct USBAutoFilter *pf = usb_auto_filter;
1495 struct USBAutoFilter **prev = &usb_auto_filter;
1496 struct USBAutoFilter filter;
1497
1498 if (parse_filter(spec, &filter) < 0)
1499 return -1;
1500
1501 while (pf) {
1502 if (match_filter(pf, &filter)) {
1503 dprintf("husb: removed auto filter: bus_num %d addr %d vid %d pid %d\n",
1504 pf->bus_num, pf->addr, pf->vendor_id, pf->product_id);
1505
1506 *prev = pf->next;
1507
1508 if (!usb_auto_filter) {
1509 /* No more filters. Stop scanning. */
1510 qemu_del_timer(usb_auto_timer);
1511 qemu_free_timer(usb_auto_timer);
1512 }
1513
1514 return 0;
1515 }
1516
1517 prev = &pf->next;
1518 pf = pf->next;
1519 }
1520
1521 return -1;
1522 }
1523
1524 typedef struct FindDeviceState {
1525 int vendor_id;
1526 int product_id;
1527 int bus_num;
1528 int addr;
1529 char product_name[PRODUCT_NAME_SZ];
1530 } FindDeviceState;
1531
1532 static int usb_host_find_device_scan(void *opaque, int bus_num, int addr,
1533 int class_id,
1534 int vendor_id, int product_id,
1535 const char *product_name, int speed)
1536 {
1537 FindDeviceState *s = opaque;
1538 if ((vendor_id == s->vendor_id &&
1539 product_id == s->product_id) ||
1540 (bus_num == s->bus_num &&
1541 addr == s->addr)) {
1542 pstrcpy(s->product_name, PRODUCT_NAME_SZ, product_name);
1543 s->bus_num = bus_num;
1544 s->addr = addr;
1545 return 1;
1546 } else {
1547 return 0;
1548 }
1549 }
1550
1551 /* the syntax is :
1552 'bus.addr' (decimal numbers) or
1553 'vendor_id:product_id' (hexa numbers) */
1554 static int usb_host_find_device(int *pbus_num, int *paddr,
1555 char *product_name, int product_name_size,
1556 const char *devname)
1557 {
1558 const char *p;
1559 int ret;
1560 FindDeviceState fs;
1561
1562 p = strchr(devname, '.');
1563 if (p) {
1564 *pbus_num = strtoul(devname, NULL, 0);
1565 *paddr = strtoul(p + 1, NULL, 0);
1566 fs.bus_num = *pbus_num;
1567 fs.addr = *paddr;
1568 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1569 if (ret)
1570 pstrcpy(product_name, product_name_size, fs.product_name);
1571 return 0;
1572 }
1573
1574 p = strchr(devname, ':');
1575 if (p) {
1576 fs.vendor_id = strtoul(devname, NULL, 16);
1577 fs.product_id = strtoul(p + 1, NULL, 16);
1578 ret = usb_host_scan(&fs, usb_host_find_device_scan);
1579 if (ret) {
1580 *pbus_num = fs.bus_num;
1581 *paddr = fs.addr;
1582 pstrcpy(product_name, product_name_size, fs.product_name);
1583 return 0;
1584 }
1585 }
1586 return -1;
1587 }
1588
1589 /**********************/
1590 /* USB host device info */
1591
1592 struct usb_class_info {
1593 int class;
1594 const char *class_name;
1595 };
1596
1597 static const struct usb_class_info usb_class_info[] = {
1598 { USB_CLASS_AUDIO, "Audio"},
1599 { USB_CLASS_COMM, "Communication"},
1600 { USB_CLASS_HID, "HID"},
1601 { USB_CLASS_HUB, "Hub" },
1602 { USB_CLASS_PHYSICAL, "Physical" },
1603 { USB_CLASS_PRINTER, "Printer" },
1604 { USB_CLASS_MASS_STORAGE, "Storage" },
1605 { USB_CLASS_CDC_DATA, "Data" },
1606 { USB_CLASS_APP_SPEC, "Application Specific" },
1607 { USB_CLASS_VENDOR_SPEC, "Vendor Specific" },
1608 { USB_CLASS_STILL_IMAGE, "Still Image" },
1609 { USB_CLASS_CSCID, "Smart Card" },
1610 { USB_CLASS_CONTENT_SEC, "Content Security" },
1611 { -1, NULL }
1612 };
1613
1614 static const char *usb_class_str(uint8_t class)
1615 {
1616 const struct usb_class_info *p;
1617 for(p = usb_class_info; p->class != -1; p++) {
1618 if (p->class == class)
1619 break;
1620 }
1621 return p->class_name;
1622 }
1623
1624 static void usb_info_device(int bus_num, int addr, int class_id,
1625 int vendor_id, int product_id,
1626 const char *product_name,
1627 int speed)
1628 {
1629 const char *class_str, *speed_str;
1630
1631 switch(speed) {
1632 case USB_SPEED_LOW:
1633 speed_str = "1.5";
1634 break;
1635 case USB_SPEED_FULL:
1636 speed_str = "12";
1637 break;
1638 case USB_SPEED_HIGH:
1639 speed_str = "480";
1640 break;
1641 default:
1642 speed_str = "?";
1643 break;
1644 }
1645
1646 term_printf(" Device %d.%d, speed %s Mb/s\n",
1647 bus_num, addr, speed_str);
1648 class_str = usb_class_str(class_id);
1649 if (class_str)
1650 term_printf(" %s:", class_str);
1651 else
1652 term_printf(" Class %02x:", class_id);
1653 term_printf(" USB device %04x:%04x", vendor_id, product_id);
1654 if (product_name[0] != '\0')
1655 term_printf(", %s", product_name);
1656 term_printf("\n");
1657 }
1658
1659 static int usb_host_info_device(void *opaque, int bus_num, int addr,
1660 int class_id,
1661 int vendor_id, int product_id,
1662 const char *product_name,
1663 int speed)
1664 {
1665 usb_info_device(bus_num, addr, class_id, vendor_id, product_id,
1666 product_name, speed);
1667 return 0;
1668 }
1669
1670 static void dec2str(int val, char *str, size_t size)
1671 {
1672 if (val == -1)
1673 snprintf(str, size, "*");
1674 else
1675 snprintf(str, size, "%d", val);
1676 }
1677
1678 static void hex2str(int val, char *str, size_t size)
1679 {
1680 if (val == -1)
1681 snprintf(str, size, "*");
1682 else
1683 snprintf(str, size, "%x", val);
1684 }
1685
1686 void usb_host_info(void)
1687 {
1688 struct USBAutoFilter *f;
1689
1690 usb_host_scan(NULL, usb_host_info_device);
1691
1692 if (usb_auto_filter)
1693 term_printf(" Auto filters:\n");
1694 for (f = usb_auto_filter; f; f = f->next) {
1695 char bus[10], addr[10], vid[10], pid[10];
1696 dec2str(f->bus_num, bus, sizeof(bus));
1697 dec2str(f->addr, addr, sizeof(addr));
1698 hex2str(f->vendor_id, vid, sizeof(vid));
1699 hex2str(f->product_id, pid, sizeof(pid));
1700 term_printf(" Device %s.%s ID %s:%s\n", bus, addr, vid, pid);
1701 }
1702 }
jz4740 based target emulation