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36#include <poll.h>
37#include <libusb.h>
38
39#include "qemu-common.h"
40#include "monitor/monitor.h"
41#include "sysemu/sysemu.h"
42#include "trace.h"
43
44#include "hw/usb.h"
45
46
47
48#define TYPE_USB_HOST_DEVICE "usb-host"
49#define USB_HOST_DEVICE(obj) \
50 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
51
52typedef struct USBHostDevice USBHostDevice;
53typedef struct USBHostRequest USBHostRequest;
54typedef struct USBHostIsoXfer USBHostIsoXfer;
55typedef struct USBHostIsoRing USBHostIsoRing;
56
57struct USBAutoFilter {
58 uint32_t bus_num;
59 uint32_t addr;
60 char *port;
61 uint32_t vendor_id;
62 uint32_t product_id;
63};
64
65enum USBHostDeviceOptions {
66 USB_HOST_OPT_PIPELINE,
67};
68
69struct USBHostDevice {
70 USBDevice parent_obj;
71
72
73 struct USBAutoFilter match;
74 int32_t bootindex;
75 uint32_t iso_urb_count;
76 uint32_t iso_urb_frames;
77 uint32_t options;
78 uint32_t loglevel;
79
80
81 QTAILQ_ENTRY(USBHostDevice) next;
82 int seen, errcount;
83 int bus_num;
84 int addr;
85 char port[16];
86
87 libusb_device *dev;
88 libusb_device_handle *dh;
89 struct libusb_device_descriptor ddesc;
90
91 struct {
92 bool detached;
93 bool claimed;
94 } ifs[USB_MAX_INTERFACES];
95
96
97 QEMUBH *bh_nodev;
98 QEMUBH *bh_postld;
99 Notifier exit;
100
101
102 QTAILQ_HEAD(, USBHostRequest) requests;
103 QTAILQ_HEAD(, USBHostIsoRing) isorings;
104};
105
106struct USBHostRequest {
107 USBHostDevice *host;
108 USBPacket *p;
109 bool in;
110 struct libusb_transfer *xfer;
111 unsigned char *buffer;
112 unsigned char *cbuf;
113 unsigned int clen;
114 QTAILQ_ENTRY(USBHostRequest) next;
115};
116
117struct USBHostIsoXfer {
118 USBHostIsoRing *ring;
119 struct libusb_transfer *xfer;
120 bool copy_complete;
121 unsigned int packet;
122 QTAILQ_ENTRY(USBHostIsoXfer) next;
123};
124
125struct USBHostIsoRing {
126 USBHostDevice *host;
127 USBEndpoint *ep;
128 QTAILQ_HEAD(, USBHostIsoXfer) unused;
129 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
130 QTAILQ_HEAD(, USBHostIsoXfer) copy;
131 QTAILQ_ENTRY(USBHostIsoRing) next;
132};
133
134static QTAILQ_HEAD(, USBHostDevice) hostdevs =
135 QTAILQ_HEAD_INITIALIZER(hostdevs);
136
137static void usb_host_auto_check(void *unused);
138static void usb_host_release_interfaces(USBHostDevice *s);
139static void usb_host_nodev(USBHostDevice *s);
140static void usb_host_detach_kernel(USBHostDevice *s);
141static void usb_host_attach_kernel(USBHostDevice *s);
142
143
144
145#define CONTROL_TIMEOUT 10000
146#define BULK_TIMEOUT 0
147#define INTR_TIMEOUT 0
148
149static const char *speed_name[] = {
150 [LIBUSB_SPEED_UNKNOWN] = "?",
151 [LIBUSB_SPEED_LOW] = "1.5",
152 [LIBUSB_SPEED_FULL] = "12",
153 [LIBUSB_SPEED_HIGH] = "480",
154 [LIBUSB_SPEED_SUPER] = "5000",
155};
156
157static const unsigned int speed_map[] = {
158 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
159 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
160 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
161 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
162};
163
164static const unsigned int status_map[] = {
165 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
166 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
167 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
168 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
169 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
170 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
171 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
172};
173
174static const char *err_names[] = {
175 [-LIBUSB_ERROR_IO] = "IO",
176 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
177 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
178 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
179 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
180 [-LIBUSB_ERROR_BUSY] = "BUSY",
181 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
182 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
183 [-LIBUSB_ERROR_PIPE] = "PIPE",
184 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
185 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
186 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
187 [-LIBUSB_ERROR_OTHER] = "OTHER",
188};
189
190static libusb_context *ctx;
191static uint32_t loglevel;
192
193static void usb_host_handle_fd(void *opaque)
194{
195 struct timeval tv = { 0, 0 };
196 libusb_handle_events_timeout(ctx, &tv);
197}
198
199static void usb_host_add_fd(int fd, short events, void *user_data)
200{
201 qemu_set_fd_handler(fd,
202 (events & POLLIN) ? usb_host_handle_fd : NULL,
203 (events & POLLOUT) ? usb_host_handle_fd : NULL,
204 ctx);
205}
206
207static void usb_host_del_fd(int fd, void *user_data)
208{
209 qemu_set_fd_handler(fd, NULL, NULL, NULL);
210}
211
212static int usb_host_init(void)
213{
214 const struct libusb_pollfd **poll;
215 int i, rc;
216
217 if (ctx) {
218 return 0;
219 }
220 rc = libusb_init(&ctx);
221 if (rc != 0) {
222 return -1;
223 }
224 libusb_set_debug(ctx, loglevel);
225
226 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
227 usb_host_del_fd,
228 ctx);
229 poll = libusb_get_pollfds(ctx);
230 if (poll) {
231 for (i = 0; poll[i] != NULL; i++) {
232 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
233 }
234 }
235 free(poll);
236 return 0;
237}
238
239static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
240{
241 uint8_t path[7];
242 size_t off;
243 int rc, i;
244
245#if LIBUSBX_API_VERSION >= 0x01000102
246 rc = libusb_get_port_numbers(dev, path, 7);
247#else
248 rc = libusb_get_port_path(ctx, dev, path, 7);
249#endif
250 if (rc < 0) {
251 return 0;
252 }
253 off = snprintf(port, len, "%d", path[0]);
254 for (i = 1; i < rc; i++) {
255 off += snprintf(port+off, len-off, ".%d", path[i]);
256 }
257 return off;
258}
259
260static void usb_host_libusb_error(const char *func, int rc)
261{
262 const char *errname;
263
264 if (rc >= 0) {
265 return;
266 }
267
268 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
269 errname = err_names[-rc];
270 } else {
271 errname = "?";
272 }
273 fprintf(stderr, "%s: %d [%s]\n", func, rc, errname);
274}
275
276
277
278static bool usb_host_use_combining(USBEndpoint *ep)
279{
280 int type;
281
282 if (!ep->pipeline) {
283 return false;
284 }
285 if (ep->pid != USB_TOKEN_IN) {
286 return false;
287 }
288 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
289 if (type != USB_ENDPOINT_XFER_BULK) {
290 return false;
291 }
292 return true;
293}
294
295
296
297static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
298 bool in, size_t bufsize)
299{
300 USBHostRequest *r = g_new0(USBHostRequest, 1);
301
302 r->host = s;
303 r->p = p;
304 r->in = in;
305 r->xfer = libusb_alloc_transfer(0);
306 if (bufsize) {
307 r->buffer = g_malloc(bufsize);
308 }
309 QTAILQ_INSERT_TAIL(&s->requests, r, next);
310 return r;
311}
312
313static void usb_host_req_free(USBHostRequest *r)
314{
315 if (r->host) {
316 QTAILQ_REMOVE(&r->host->requests, r, next);
317 }
318 libusb_free_transfer(r->xfer);
319 g_free(r->buffer);
320 g_free(r);
321}
322
323static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
324{
325 USBHostRequest *r;
326
327 QTAILQ_FOREACH(r, &s->requests, next) {
328 if (r->p == p) {
329 return r;
330 }
331 }
332 return NULL;
333}
334
335static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
336{
337 USBHostRequest *r = xfer->user_data;
338 USBHostDevice *s = r->host;
339 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
340
341 if (r->p == NULL) {
342 goto out;
343 }
344
345 r->p->status = status_map[xfer->status];
346 r->p->actual_length = xfer->actual_length;
347 if (r->in && xfer->actual_length) {
348 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
349 }
350 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
351 r->p->status, r->p->actual_length);
352 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
353
354out:
355 usb_host_req_free(r);
356 if (disconnect) {
357 usb_host_nodev(s);
358 }
359}
360
361static void usb_host_req_complete_data(struct libusb_transfer *xfer)
362{
363 USBHostRequest *r = xfer->user_data;
364 USBHostDevice *s = r->host;
365 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
366
367 if (r->p == NULL) {
368 goto out;
369 }
370
371 r->p->status = status_map[xfer->status];
372 if (r->in && xfer->actual_length) {
373 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
374 }
375 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
376 r->p->status, r->p->actual_length);
377 if (usb_host_use_combining(r->p->ep)) {
378 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
379 } else {
380 usb_packet_complete(USB_DEVICE(s), r->p);
381 }
382
383out:
384 usb_host_req_free(r);
385 if (disconnect) {
386 usb_host_nodev(s);
387 }
388}
389
390static void usb_host_req_abort(USBHostRequest *r)
391{
392 USBHostDevice *s = r->host;
393 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
394
395 if (inflight) {
396 r->p->status = USB_RET_NODEV;
397 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
398 r->p->status, r->p->actual_length);
399 if (r->p->ep->nr == 0) {
400 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
401 } else {
402 usb_packet_complete(USB_DEVICE(s), r->p);
403 }
404 r->p = NULL;
405 }
406
407 QTAILQ_REMOVE(&r->host->requests, r, next);
408 r->host = NULL;
409
410 if (inflight) {
411 libusb_cancel_transfer(r->xfer);
412 }
413}
414
415
416
417static void usb_host_req_complete_iso(struct libusb_transfer *transfer)
418{
419 USBHostIsoXfer *xfer = transfer->user_data;
420
421 if (!xfer) {
422
423 g_free(transfer->buffer);
424 libusb_free_transfer(transfer);
425 return;
426 }
427
428 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
429 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
430 USBHostDevice *s = xfer->ring->host;
431 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
432 }
433 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
434 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
435 } else {
436 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
437 }
438}
439
440static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
441{
442 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
443 USBHostIsoXfer *xfer;
444
445 int packets = s->iso_urb_frames;
446 int i;
447
448 ring->host = s;
449 ring->ep = ep;
450 QTAILQ_INIT(&ring->unused);
451 QTAILQ_INIT(&ring->inflight);
452 QTAILQ_INIT(&ring->copy);
453 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
454
455 for (i = 0; i < s->iso_urb_count; i++) {
456 xfer = g_new0(USBHostIsoXfer, 1);
457 xfer->ring = ring;
458 xfer->xfer = libusb_alloc_transfer(packets);
459 xfer->xfer->dev_handle = s->dh;
460 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
461
462 xfer->xfer->endpoint = ring->ep->nr;
463 if (ring->ep->pid == USB_TOKEN_IN) {
464 xfer->xfer->endpoint |= USB_DIR_IN;
465 }
466 xfer->xfer->callback = usb_host_req_complete_iso;
467 xfer->xfer->user_data = xfer;
468
469 xfer->xfer->num_iso_packets = packets;
470 xfer->xfer->length = ring->ep->max_packet_size * packets;
471 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
472
473 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
474 }
475
476 return ring;
477}
478
479static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
480{
481 USBHostIsoRing *ring;
482
483 QTAILQ_FOREACH(ring, &s->isorings, next) {
484 if (ring->ep == ep) {
485 return ring;
486 }
487 }
488 return NULL;
489}
490
491static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
492{
493 libusb_set_iso_packet_lengths(xfer->xfer,
494 xfer->ring->ep->max_packet_size);
495 xfer->packet = 0;
496 xfer->copy_complete = false;
497}
498
499static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
500{
501 if (inflight) {
502 xfer->xfer->user_data = NULL;
503 } else {
504 g_free(xfer->xfer->buffer);
505 libusb_free_transfer(xfer->xfer);
506 }
507 g_free(xfer);
508}
509
510static void usb_host_iso_free(USBHostIsoRing *ring)
511{
512 USBHostIsoXfer *xfer;
513
514 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
515 QTAILQ_REMOVE(&ring->inflight, xfer, next);
516 usb_host_iso_free_xfer(xfer, true);
517 }
518 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
519 QTAILQ_REMOVE(&ring->unused, xfer, next);
520 usb_host_iso_free_xfer(xfer, false);
521 }
522 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
523 QTAILQ_REMOVE(&ring->copy, xfer, next);
524 usb_host_iso_free_xfer(xfer, false);
525 }
526
527 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
528 g_free(ring);
529}
530
531static void usb_host_iso_free_all(USBHostDevice *s)
532{
533 USBHostIsoRing *ring;
534
535 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
536 usb_host_iso_free(ring);
537 }
538}
539
540static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
541{
542 unsigned int psize;
543 unsigned char *buf;
544
545 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
546 if (p->pid == USB_TOKEN_OUT) {
547 psize = p->iov.size;
548 if (psize > xfer->ring->ep->max_packet_size) {
549
550 psize = xfer->ring->ep->max_packet_size;
551 }
552 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
553 } else {
554 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
555 if (psize > p->iov.size) {
556
557 psize = p->iov.size;
558 }
559 }
560 usb_packet_copy(p, buf, psize);
561 xfer->packet++;
562 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
563 return xfer->copy_complete;
564}
565
566static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
567{
568 USBHostIsoRing *ring;
569 USBHostIsoXfer *xfer;
570 bool disconnect = false;
571 int rc;
572
573 ring = usb_host_iso_find(s, p->ep);
574 if (ring == NULL) {
575 ring = usb_host_iso_alloc(s, p->ep);
576 }
577
578
579 xfer = QTAILQ_FIRST(&ring->copy);
580 if (xfer != NULL) {
581 if (usb_host_iso_data_copy(xfer, p)) {
582 QTAILQ_REMOVE(&ring->copy, xfer, next);
583 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
584 }
585 }
586
587
588 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
589 QTAILQ_REMOVE(&ring->unused, xfer, next);
590 usb_host_iso_reset_xfer(xfer);
591 rc = libusb_submit_transfer(xfer->xfer);
592 if (rc != 0) {
593 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
594 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
595 if (rc == LIBUSB_ERROR_NO_DEVICE) {
596 disconnect = true;
597 }
598 break;
599 }
600 if (QTAILQ_EMPTY(&ring->inflight)) {
601 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
602 }
603 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
604 }
605
606 if (disconnect) {
607 usb_host_nodev(s);
608 }
609}
610
611static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
612{
613 USBHostIsoRing *ring;
614 USBHostIsoXfer *xfer;
615 bool disconnect = false;
616 int rc, filled = 0;
617
618 ring = usb_host_iso_find(s, p->ep);
619 if (ring == NULL) {
620 ring = usb_host_iso_alloc(s, p->ep);
621 }
622
623
624 xfer = QTAILQ_FIRST(&ring->copy);
625 while (xfer != NULL && xfer->copy_complete) {
626 filled++;
627 xfer = QTAILQ_NEXT(xfer, next);
628 }
629 if (xfer == NULL) {
630 xfer = QTAILQ_FIRST(&ring->unused);
631 if (xfer == NULL) {
632 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
633 return;
634 }
635 QTAILQ_REMOVE(&ring->unused, xfer, next);
636 usb_host_iso_reset_xfer(xfer);
637 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
638 }
639 usb_host_iso_data_copy(xfer, p);
640
641 if (QTAILQ_EMPTY(&ring->inflight)) {
642
643
644 if (filled*2 < s->iso_urb_count) {
645 return;
646 }
647 }
648
649
650 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
651 xfer->copy_complete) {
652 QTAILQ_REMOVE(&ring->copy, xfer, next);
653 rc = libusb_submit_transfer(xfer->xfer);
654 if (rc != 0) {
655 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
656 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
657 if (rc == LIBUSB_ERROR_NO_DEVICE) {
658 disconnect = true;
659 }
660 break;
661 }
662 if (QTAILQ_EMPTY(&ring->inflight)) {
663 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
664 }
665 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
666 }
667
668 if (disconnect) {
669 usb_host_nodev(s);
670 }
671}
672
673
674
675static bool usb_host_full_speed_compat(USBHostDevice *s)
676{
677 struct libusb_config_descriptor *conf;
678 const struct libusb_interface_descriptor *intf;
679 const struct libusb_endpoint_descriptor *endp;
680 uint8_t type;
681 int rc, c, i, a, e;
682
683 for (c = 0;; c++) {
684 rc = libusb_get_config_descriptor(s->dev, c, &conf);
685 if (rc != 0) {
686 break;
687 }
688 for (i = 0; i < conf->bNumInterfaces; i++) {
689 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
690 intf = &conf->interface[i].altsetting[a];
691 for (e = 0; e < intf->bNumEndpoints; e++) {
692 endp = &intf->endpoint[e];
693 type = endp->bmAttributes & 0x3;
694 switch (type) {
695 case 0x01:
696 return false;
697 case 0x03:
698 if (endp->wMaxPacketSize > 64) {
699 return false;
700 }
701 break;
702 }
703 }
704 }
705 }
706 libusb_free_config_descriptor(conf);
707 }
708 return true;
709}
710
711static void usb_host_ep_update(USBHostDevice *s)
712{
713 static const char *tname[] = {
714 [USB_ENDPOINT_XFER_CONTROL] = "control",
715 [USB_ENDPOINT_XFER_ISOC] = "isoc",
716 [USB_ENDPOINT_XFER_BULK] = "bulk",
717 [USB_ENDPOINT_XFER_INT] = "int",
718 };
719 USBDevice *udev = USB_DEVICE(s);
720 struct libusb_config_descriptor *conf;
721 const struct libusb_interface_descriptor *intf;
722 const struct libusb_endpoint_descriptor *endp;
723 uint8_t devep, type;
724 int pid, ep;
725 int rc, i, e;
726
727 usb_ep_reset(udev);
728 rc = libusb_get_active_config_descriptor(s->dev, &conf);
729 if (rc != 0) {
730 return;
731 }
732 trace_usb_host_parse_config(s->bus_num, s->addr,
733 conf->bConfigurationValue, true);
734
735 for (i = 0; i < conf->bNumInterfaces; i++) {
736 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
737 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
738 trace_usb_host_parse_interface(s->bus_num, s->addr,
739 intf->bInterfaceNumber,
740 intf->bAlternateSetting, true);
741 for (e = 0; e < intf->bNumEndpoints; e++) {
742 endp = &intf->endpoint[e];
743
744 devep = endp->bEndpointAddress;
745 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
746 ep = devep & 0xf;
747 type = endp->bmAttributes & 0x3;
748
749 if (ep == 0) {
750 trace_usb_host_parse_error(s->bus_num, s->addr,
751 "invalid endpoint address");
752 return;
753 }
754 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
755 trace_usb_host_parse_error(s->bus_num, s->addr,
756 "duplicate endpoint address");
757 return;
758 }
759
760 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
761 (devep & USB_DIR_IN) ? "in" : "out",
762 tname[type], true);
763 usb_ep_set_max_packet_size(udev, pid, ep,
764 endp->wMaxPacketSize);
765 usb_ep_set_type(udev, pid, ep, type);
766 usb_ep_set_ifnum(udev, pid, ep, i);
767 usb_ep_set_halted(udev, pid, ep, 0);
768 }
769 }
770
771 libusb_free_config_descriptor(conf);
772}
773
774static int usb_host_open(USBHostDevice *s, libusb_device *dev)
775{
776 USBDevice *udev = USB_DEVICE(s);
777 int bus_num = libusb_get_bus_number(dev);
778 int addr = libusb_get_device_address(dev);
779 int rc;
780
781 trace_usb_host_open_started(bus_num, addr);
782
783 if (s->dh != NULL) {
784 goto fail;
785 }
786 rc = libusb_open(dev, &s->dh);
787 if (rc != 0) {
788 goto fail;
789 }
790
791 s->dev = dev;
792 s->bus_num = bus_num;
793 s->addr = addr;
794
795 usb_host_detach_kernel(s);
796
797 libusb_get_device_descriptor(dev, &s->ddesc);
798 usb_host_get_port(s->dev, s->port, sizeof(s->port));
799
800 usb_ep_init(udev);
801 usb_host_ep_update(s);
802
803 udev->speed = speed_map[libusb_get_device_speed(dev)];
804 udev->speedmask = (1 << udev->speed);
805 if (udev->speed == USB_SPEED_HIGH && usb_host_full_speed_compat(s)) {
806 udev->speedmask |= USB_SPEED_MASK_FULL;
807 }
808
809 if (s->ddesc.iProduct) {
810 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
811 (unsigned char *)udev->product_desc,
812 sizeof(udev->product_desc));
813 } else {
814 snprintf(udev->product_desc, sizeof(udev->product_desc),
815 "host:%d.%d", bus_num, addr);
816 }
817
818 rc = usb_device_attach(udev);
819 if (rc) {
820 goto fail;
821 }
822
823 trace_usb_host_open_success(bus_num, addr);
824 return 0;
825
826fail:
827 trace_usb_host_open_failure(bus_num, addr);
828 if (s->dh != NULL) {
829 libusb_close(s->dh);
830 s->dh = NULL;
831 s->dev = NULL;
832 }
833 return -1;
834}
835
836static void usb_host_abort_xfers(USBHostDevice *s)
837{
838 USBHostRequest *r, *rtmp;
839
840 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
841 usb_host_req_abort(r);
842 }
843}
844
845static int usb_host_close(USBHostDevice *s)
846{
847 USBDevice *udev = USB_DEVICE(s);
848
849 if (s->dh == NULL) {
850 return -1;
851 }
852
853 trace_usb_host_close(s->bus_num, s->addr);
854
855 usb_host_abort_xfers(s);
856 usb_host_iso_free_all(s);
857
858 if (udev->attached) {
859 usb_device_detach(udev);
860 }
861
862 usb_host_release_interfaces(s);
863 libusb_reset_device(s->dh);
864 usb_host_attach_kernel(s);
865 libusb_close(s->dh);
866 s->dh = NULL;
867 s->dev = NULL;
868
869 usb_host_auto_check(NULL);
870 return 0;
871}
872
873static void usb_host_nodev_bh(void *opaque)
874{
875 USBHostDevice *s = opaque;
876 usb_host_close(s);
877}
878
879static void usb_host_nodev(USBHostDevice *s)
880{
881 if (!s->bh_nodev) {
882 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
883 }
884 qemu_bh_schedule(s->bh_nodev);
885}
886
887static void usb_host_exit_notifier(struct Notifier *n, void *data)
888{
889 USBHostDevice *s = container_of(n, USBHostDevice, exit);
890
891 if (s->dh) {
892 usb_host_release_interfaces(s);
893 usb_host_attach_kernel(s);
894 }
895}
896
897static int usb_host_initfn(USBDevice *udev)
898{
899 USBHostDevice *s = USB_HOST_DEVICE(udev);
900
901 loglevel = s->loglevel;
902 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
903 udev->auto_attach = 0;
904 QTAILQ_INIT(&s->requests);
905 QTAILQ_INIT(&s->isorings);
906
907 s->exit.notify = usb_host_exit_notifier;
908 qemu_add_exit_notifier(&s->exit);
909
910 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
911 add_boot_device_path(s->bootindex, &udev->qdev, NULL);
912 usb_host_auto_check(NULL);
913 return 0;
914}
915
916static void usb_host_handle_destroy(USBDevice *udev)
917{
918 USBHostDevice *s = USB_HOST_DEVICE(udev);
919
920 qemu_remove_exit_notifier(&s->exit);
921 QTAILQ_REMOVE(&hostdevs, s, next);
922 usb_host_close(s);
923}
924
925static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
926{
927 USBHostDevice *s = USB_HOST_DEVICE(udev);
928 USBHostRequest *r;
929
930 if (p->combined) {
931 usb_combined_packet_cancel(udev, p);
932 return;
933 }
934
935 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
936
937 r = usb_host_req_find(s, p);
938 if (r && r->p) {
939 r->p = NULL;
940 libusb_cancel_transfer(r->xfer);
941 }
942}
943
944static void usb_host_detach_kernel(USBHostDevice *s)
945{
946 struct libusb_config_descriptor *conf;
947 int rc, i;
948
949 rc = libusb_get_active_config_descriptor(s->dev, &conf);
950 if (rc != 0) {
951 return;
952 }
953 for (i = 0; i < conf->bNumInterfaces; i++) {
954 rc = libusb_kernel_driver_active(s->dh, i);
955 usb_host_libusb_error("libusb_kernel_driver_active", rc);
956 if (rc != 1) {
957 continue;
958 }
959 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
960 rc = libusb_detach_kernel_driver(s->dh, i);
961 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
962 s->ifs[i].detached = true;
963 }
964 libusb_free_config_descriptor(conf);
965}
966
967static void usb_host_attach_kernel(USBHostDevice *s)
968{
969 struct libusb_config_descriptor *conf;
970 int rc, i;
971
972 rc = libusb_get_active_config_descriptor(s->dev, &conf);
973 if (rc != 0) {
974 return;
975 }
976 for (i = 0; i < conf->bNumInterfaces; i++) {
977 if (!s->ifs[i].detached) {
978 continue;
979 }
980 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
981 libusb_attach_kernel_driver(s->dh, i);
982 s->ifs[i].detached = false;
983 }
984 libusb_free_config_descriptor(conf);
985}
986
987static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
988{
989 USBDevice *udev = USB_DEVICE(s);
990 struct libusb_config_descriptor *conf;
991 int rc, i;
992
993 for (i = 0; i < USB_MAX_INTERFACES; i++) {
994 udev->altsetting[i] = 0;
995 }
996 udev->ninterfaces = 0;
997 udev->configuration = 0;
998
999 usb_host_detach_kernel(s);
1000
1001 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1002 if (rc != 0) {
1003 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1004
1005 return USB_RET_SUCCESS;
1006 }
1007 return USB_RET_STALL;
1008 }
1009
1010 for (i = 0; i < conf->bNumInterfaces; i++) {
1011 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1012 rc = libusb_claim_interface(s->dh, i);
1013 usb_host_libusb_error("libusb_claim_interface", rc);
1014 if (rc != 0) {
1015 return USB_RET_STALL;
1016 }
1017 s->ifs[i].claimed = true;
1018 }
1019
1020 udev->ninterfaces = conf->bNumInterfaces;
1021 udev->configuration = configuration;
1022
1023 libusb_free_config_descriptor(conf);
1024 return USB_RET_SUCCESS;
1025}
1026
1027static void usb_host_release_interfaces(USBHostDevice *s)
1028{
1029 USBDevice *udev = USB_DEVICE(s);
1030 int i, rc;
1031
1032 for (i = 0; i < udev->ninterfaces; i++) {
1033 if (!s->ifs[i].claimed) {
1034 continue;
1035 }
1036 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1037 rc = libusb_release_interface(s->dh, i);
1038 usb_host_libusb_error("libusb_release_interface", rc);
1039 s->ifs[i].claimed = false;
1040 }
1041}
1042
1043static void usb_host_set_address(USBHostDevice *s, int addr)
1044{
1045 USBDevice *udev = USB_DEVICE(s);
1046
1047 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1048 udev->addr = addr;
1049}
1050
1051static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1052{
1053 int rc;
1054
1055 trace_usb_host_set_config(s->bus_num, s->addr, config);
1056
1057 usb_host_release_interfaces(s);
1058 rc = libusb_set_configuration(s->dh, config);
1059 if (rc != 0) {
1060 usb_host_libusb_error("libusb_set_configuration", rc);
1061 p->status = USB_RET_STALL;
1062 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1063 usb_host_nodev(s);
1064 }
1065 return;
1066 }
1067 p->status = usb_host_claim_interfaces(s, config);
1068 if (p->status != USB_RET_SUCCESS) {
1069 return;
1070 }
1071 usb_host_ep_update(s);
1072}
1073
1074static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1075 USBPacket *p)
1076{
1077 USBDevice *udev = USB_DEVICE(s);
1078 int rc;
1079
1080 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1081
1082 usb_host_iso_free_all(s);
1083
1084 if (iface >= USB_MAX_INTERFACES) {
1085 p->status = USB_RET_STALL;
1086 return;
1087 }
1088
1089 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1090 if (rc != 0) {
1091 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1092 p->status = USB_RET_STALL;
1093 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1094 usb_host_nodev(s);
1095 }
1096 return;
1097 }
1098
1099 udev->altsetting[iface] = alt;
1100 usb_host_ep_update(s);
1101}
1102
1103static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1104 int request, int value, int index,
1105 int length, uint8_t *data)
1106{
1107 USBHostDevice *s = USB_HOST_DEVICE(udev);
1108 USBHostRequest *r;
1109 int rc;
1110
1111 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1112
1113 if (s->dh == NULL) {
1114 p->status = USB_RET_NODEV;
1115 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1116 return;
1117 }
1118
1119 switch (request) {
1120 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1121 usb_host_set_address(s, value);
1122 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1123 return;
1124
1125 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1126 usb_host_set_config(s, value & 0xff, p);
1127 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1128 return;
1129
1130 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1131 usb_host_set_interface(s, index, value, p);
1132 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1133 return;
1134
1135 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1136 if (value == 0) {
1137 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1138 libusb_clear_halt(s->dh, index);
1139 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1140 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1141 return;
1142 }
1143 }
1144
1145 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1146 r->cbuf = data;
1147 r->clen = length;
1148 memcpy(r->buffer, udev->setup_buf, 8);
1149 if (!r->in) {
1150 memcpy(r->buffer + 8, r->cbuf, r->clen);
1151 }
1152
1153 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1154 usb_host_req_complete_ctrl, r,
1155 CONTROL_TIMEOUT);
1156 rc = libusb_submit_transfer(r->xfer);
1157 if (rc != 0) {
1158 p->status = USB_RET_NODEV;
1159 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1160 p->status, p->actual_length);
1161 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1162 usb_host_nodev(s);
1163 }
1164 return;
1165 }
1166
1167 p->status = USB_RET_ASYNC;
1168}
1169
1170static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1171{
1172 USBHostDevice *s = USB_HOST_DEVICE(udev);
1173 USBHostRequest *r;
1174 size_t size;
1175 int ep, rc;
1176
1177 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1178 p->status = USB_RET_ADD_TO_QUEUE;
1179 return;
1180 }
1181
1182 trace_usb_host_req_data(s->bus_num, s->addr, p,
1183 p->pid == USB_TOKEN_IN,
1184 p->ep->nr, p->iov.size);
1185
1186 if (s->dh == NULL) {
1187 p->status = USB_RET_NODEV;
1188 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1189 return;
1190 }
1191 if (p->ep->halted) {
1192 p->status = USB_RET_STALL;
1193 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1194 return;
1195 }
1196
1197 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1198 case USB_ENDPOINT_XFER_BULK:
1199 size = usb_packet_size(p);
1200 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1201 if (!r->in) {
1202 usb_packet_copy(p, r->buffer, size);
1203 }
1204 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1205 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1206 r->buffer, size,
1207 usb_host_req_complete_data, r,
1208 BULK_TIMEOUT);
1209 break;
1210 case USB_ENDPOINT_XFER_INT:
1211 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1212 if (!r->in) {
1213 usb_packet_copy(p, r->buffer, p->iov.size);
1214 }
1215 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1216 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1217 r->buffer, p->iov.size,
1218 usb_host_req_complete_data, r,
1219 INTR_TIMEOUT);
1220 break;
1221 case USB_ENDPOINT_XFER_ISOC:
1222 if (p->pid == USB_TOKEN_IN) {
1223 usb_host_iso_data_in(s, p);
1224 } else {
1225 usb_host_iso_data_out(s, p);
1226 }
1227 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1228 p->status, p->actual_length);
1229 return;
1230 default:
1231 p->status = USB_RET_STALL;
1232 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1233 p->status, p->actual_length);
1234 return;
1235 }
1236
1237 rc = libusb_submit_transfer(r->xfer);
1238 if (rc != 0) {
1239 p->status = USB_RET_NODEV;
1240 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1241 p->status, p->actual_length);
1242 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1243 usb_host_nodev(s);
1244 }
1245 return;
1246 }
1247
1248 p->status = USB_RET_ASYNC;
1249}
1250
1251static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1252{
1253 if (usb_host_use_combining(ep)) {
1254 usb_ep_combine_input_packets(ep);
1255 }
1256}
1257
1258static void usb_host_handle_reset(USBDevice *udev)
1259{
1260 USBHostDevice *s = USB_HOST_DEVICE(udev);
1261 int rc;
1262
1263 trace_usb_host_reset(s->bus_num, s->addr);
1264
1265 rc = libusb_reset_device(s->dh);
1266 if (rc != 0) {
1267 usb_host_nodev(s);
1268 }
1269}
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287static void usb_host_post_load_bh(void *opaque)
1288{
1289 USBHostDevice *dev = opaque;
1290 USBDevice *udev = USB_DEVICE(dev);
1291
1292 if (dev->dh != NULL) {
1293 usb_host_close(dev);
1294 }
1295 if (udev->attached) {
1296 usb_device_detach(udev);
1297 }
1298 usb_host_auto_check(NULL);
1299}
1300
1301static int usb_host_post_load(void *opaque, int version_id)
1302{
1303 USBHostDevice *dev = opaque;
1304
1305 if (!dev->bh_postld) {
1306 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1307 }
1308 qemu_bh_schedule(dev->bh_postld);
1309 return 0;
1310}
1311
1312static const VMStateDescription vmstate_usb_host = {
1313 .name = "usb-host",
1314 .version_id = 1,
1315 .minimum_version_id = 1,
1316 .post_load = usb_host_post_load,
1317 .fields = (VMStateField[]) {
1318 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1319 VMSTATE_END_OF_LIST()
1320 }
1321};
1322
1323static Property usb_host_dev_properties[] = {
1324 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1325 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1326 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1327 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0),
1328 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0),
1329 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1330 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1331 DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1),
1332 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1333 LIBUSB_LOG_LEVEL_WARNING),
1334 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1335 USB_HOST_OPT_PIPELINE, true),
1336 DEFINE_PROP_END_OF_LIST(),
1337};
1338
1339static void usb_host_class_initfn(ObjectClass *klass, void *data)
1340{
1341 DeviceClass *dc = DEVICE_CLASS(klass);
1342 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1343
1344 uc->init = usb_host_initfn;
1345 uc->product_desc = "USB Host Device";
1346 uc->cancel_packet = usb_host_cancel_packet;
1347 uc->handle_data = usb_host_handle_data;
1348 uc->handle_control = usb_host_handle_control;
1349 uc->handle_reset = usb_host_handle_reset;
1350 uc->handle_destroy = usb_host_handle_destroy;
1351 uc->flush_ep_queue = usb_host_flush_ep_queue;
1352 dc->vmsd = &vmstate_usb_host;
1353 dc->props = usb_host_dev_properties;
1354 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1355}
1356
1357static TypeInfo usb_host_dev_info = {
1358 .name = TYPE_USB_HOST_DEVICE,
1359 .parent = TYPE_USB_DEVICE,
1360 .instance_size = sizeof(USBHostDevice),
1361 .class_init = usb_host_class_initfn,
1362};
1363
1364static void usb_host_register_types(void)
1365{
1366 type_register_static(&usb_host_dev_info);
1367}
1368
1369type_init(usb_host_register_types)
1370
1371
1372
1373static QEMUTimer *usb_auto_timer;
1374static VMChangeStateEntry *usb_vmstate;
1375
1376static void usb_host_vm_state(void *unused, int running, RunState state)
1377{
1378 if (running) {
1379 usb_host_auto_check(unused);
1380 }
1381}
1382
1383static void usb_host_auto_check(void *unused)
1384{
1385 struct USBHostDevice *s;
1386 struct USBAutoFilter *f;
1387 libusb_device **devs;
1388 struct libusb_device_descriptor ddesc;
1389 int unconnected = 0;
1390 int i, n;
1391
1392 if (usb_host_init() != 0) {
1393 return;
1394 }
1395
1396 if (runstate_is_running()) {
1397 n = libusb_get_device_list(ctx, &devs);
1398 for (i = 0; i < n; i++) {
1399 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1400 continue;
1401 }
1402 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1403 continue;
1404 }
1405 QTAILQ_FOREACH(s, &hostdevs, next) {
1406 f = &s->match;
1407 if (f->bus_num > 0 &&
1408 f->bus_num != libusb_get_bus_number(devs[i])) {
1409 continue;
1410 }
1411 if (f->addr > 0 &&
1412 f->addr != libusb_get_device_address(devs[i])) {
1413 continue;
1414 }
1415 if (f->port != NULL) {
1416 char port[16] = "-";
1417 usb_host_get_port(devs[i], port, sizeof(port));
1418 if (strcmp(f->port, port) != 0) {
1419 continue;
1420 }
1421 }
1422 if (f->vendor_id > 0 &&
1423 f->vendor_id != ddesc.idVendor) {
1424 continue;
1425 }
1426 if (f->product_id > 0 &&
1427 f->product_id != ddesc.idProduct) {
1428 continue;
1429 }
1430
1431
1432 s->seen++;
1433 if (s->errcount >= 3) {
1434 continue;
1435 }
1436 if (s->dh != NULL) {
1437 continue;
1438 }
1439 if (usb_host_open(s, devs[i]) < 0) {
1440 s->errcount++;
1441 continue;
1442 }
1443 break;
1444 }
1445 }
1446 libusb_free_device_list(devs, 1);
1447
1448 QTAILQ_FOREACH(s, &hostdevs, next) {
1449 if (s->dh == NULL) {
1450 unconnected++;
1451 }
1452 if (s->seen == 0) {
1453 if (s->dh) {
1454 usb_host_close(s);
1455 }
1456 s->errcount = 0;
1457 }
1458 s->seen = 0;
1459 }
1460
1461#if 0
1462 if (unconnected == 0) {
1463
1464 if (usb_auto_timer) {
1465 timer_del(usb_auto_timer);
1466 trace_usb_host_auto_scan_disabled();
1467 }
1468 return;
1469 }
1470#endif
1471 }
1472
1473 if (!usb_vmstate) {
1474 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1475 }
1476 if (!usb_auto_timer) {
1477 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1478 if (!usb_auto_timer) {
1479 return;
1480 }
1481 trace_usb_host_auto_scan_enabled();
1482 }
1483 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1484}
1485
1486void usb_host_info(Monitor *mon, const QDict *qdict)
1487{
1488 libusb_device **devs;
1489 struct libusb_device_descriptor ddesc;
1490 char port[16];
1491 int i, n;
1492
1493 if (usb_host_init() != 0) {
1494 return;
1495 }
1496
1497 n = libusb_get_device_list(ctx, &devs);
1498 for (i = 0; i < n; i++) {
1499 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1500 continue;
1501 }
1502 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1503 continue;
1504 }
1505 usb_host_get_port(devs[i], port, sizeof(port));
1506 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1507 libusb_get_bus_number(devs[i]),
1508 libusb_get_device_address(devs[i]),
1509 port,
1510 speed_name[libusb_get_device_speed(devs[i])]);
1511 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1512 monitor_printf(mon, " USB device %04x:%04x",
1513 ddesc.idVendor, ddesc.idProduct);
1514 if (ddesc.iProduct) {
1515 libusb_device_handle *handle;
1516 if (libusb_open(devs[i], &handle) == 0) {
1517 unsigned char name[64] = "";
1518 libusb_get_string_descriptor_ascii(handle,
1519 ddesc.iProduct,
1520 name, sizeof(name));
1521 libusb_close(handle);
1522 monitor_printf(mon, ", %s", name);
1523 }
1524 }
1525 monitor_printf(mon, "\n");
1526 }
1527 libusb_free_device_list(devs, 1);
1528}
1529
