Re-attach usb device to kernel while usb_host_open fails
[qemu.git] / hw / usb / host-libusb.c
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 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com>
15 * Completely rewritten to use libusb instead of usbfs ioctls.
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining a copy
18 * of this software and associated documentation files (the "Software"), to deal
19 * in the Software without restriction, including without limitation the rights
20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
21 * copies of the Software, and to permit persons to whom the Software is
22 * furnished to do so, subject to the following conditions:
23 *
24 * The above copyright notice and this permission notice shall be included in
25 * all copies or substantial portions of the Software.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
33 * THE SOFTWARE.
34 */
35
36 #include <poll.h>
37 #include <libusb.h>
38
39 #include "qemu-common.h"
40 #include "monitor/monitor.h"
41 #include "qemu/error-report.h"
42 #include "sysemu/sysemu.h"
43 #include "trace.h"
44
45 #include "hw/usb.h"
46
47 /* ------------------------------------------------------------------------ */
48
49 #define TYPE_USB_HOST_DEVICE "usb-host"
50 #define USB_HOST_DEVICE(obj) \
51 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
52
53 typedef struct USBHostDevice USBHostDevice;
54 typedef struct USBHostRequest USBHostRequest;
55 typedef struct USBHostIsoXfer USBHostIsoXfer;
56 typedef struct USBHostIsoRing USBHostIsoRing;
57
58 struct USBAutoFilter {
59 uint32_t bus_num;
60 uint32_t addr;
61 char *port;
62 uint32_t vendor_id;
63 uint32_t product_id;
64 };
65
66 enum USBHostDeviceOptions {
67 USB_HOST_OPT_PIPELINE,
68 };
69
70 struct USBHostDevice {
71 USBDevice parent_obj;
72
73 /* properties */
74 struct USBAutoFilter match;
75 int32_t bootindex;
76 uint32_t iso_urb_count;
77 uint32_t iso_urb_frames;
78 uint32_t options;
79 uint32_t loglevel;
80
81 /* state */
82 QTAILQ_ENTRY(USBHostDevice) next;
83 int seen, errcount;
84 int bus_num;
85 int addr;
86 char port[16];
87
88 libusb_device *dev;
89 libusb_device_handle *dh;
90 struct libusb_device_descriptor ddesc;
91
92 struct {
93 bool detached;
94 bool claimed;
95 } ifs[USB_MAX_INTERFACES];
96
97 /* callbacks & friends */
98 QEMUBH *bh_nodev;
99 QEMUBH *bh_postld;
100 Notifier exit;
101
102 /* request queues */
103 QTAILQ_HEAD(, USBHostRequest) requests;
104 QTAILQ_HEAD(, USBHostIsoRing) isorings;
105 };
106
107 struct USBHostRequest {
108 USBHostDevice *host;
109 USBPacket *p;
110 bool in;
111 struct libusb_transfer *xfer;
112 unsigned char *buffer;
113 unsigned char *cbuf;
114 unsigned int clen;
115 bool usb3ep0quirk;
116 QTAILQ_ENTRY(USBHostRequest) next;
117 };
118
119 struct USBHostIsoXfer {
120 USBHostIsoRing *ring;
121 struct libusb_transfer *xfer;
122 bool copy_complete;
123 unsigned int packet;
124 QTAILQ_ENTRY(USBHostIsoXfer) next;
125 };
126
127 struct USBHostIsoRing {
128 USBHostDevice *host;
129 USBEndpoint *ep;
130 QTAILQ_HEAD(, USBHostIsoXfer) unused;
131 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
132 QTAILQ_HEAD(, USBHostIsoXfer) copy;
133 QTAILQ_ENTRY(USBHostIsoRing) next;
134 };
135
136 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
137 QTAILQ_HEAD_INITIALIZER(hostdevs);
138
139 static void usb_host_auto_check(void *unused);
140 static void usb_host_release_interfaces(USBHostDevice *s);
141 static void usb_host_nodev(USBHostDevice *s);
142 static void usb_host_detach_kernel(USBHostDevice *s);
143 static void usb_host_attach_kernel(USBHostDevice *s);
144
145 /* ------------------------------------------------------------------------ */
146
147 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
148 #define LIBUSB_LOG_LEVEL_WARNING 2
149 #endif
150
151 /* ------------------------------------------------------------------------ */
152
153 #define CONTROL_TIMEOUT 10000 /* 10 sec */
154 #define BULK_TIMEOUT 0 /* unlimited */
155 #define INTR_TIMEOUT 0 /* unlimited */
156
157 #if LIBUSBX_API_VERSION >= 0x01000103
158 # define HAVE_STREAMS 1
159 #endif
160
161 static const char *speed_name[] = {
162 [LIBUSB_SPEED_UNKNOWN] = "?",
163 [LIBUSB_SPEED_LOW] = "1.5",
164 [LIBUSB_SPEED_FULL] = "12",
165 [LIBUSB_SPEED_HIGH] = "480",
166 [LIBUSB_SPEED_SUPER] = "5000",
167 };
168
169 static const unsigned int speed_map[] = {
170 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
171 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
172 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
173 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
174 };
175
176 static const unsigned int status_map[] = {
177 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
178 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
179 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
180 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
181 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
182 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
183 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
184 };
185
186 static const char *err_names[] = {
187 [-LIBUSB_ERROR_IO] = "IO",
188 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
189 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
190 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
191 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
192 [-LIBUSB_ERROR_BUSY] = "BUSY",
193 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
194 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
195 [-LIBUSB_ERROR_PIPE] = "PIPE",
196 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
197 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
198 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
199 [-LIBUSB_ERROR_OTHER] = "OTHER",
200 };
201
202 static libusb_context *ctx;
203 static uint32_t loglevel;
204
205 static void usb_host_handle_fd(void *opaque)
206 {
207 struct timeval tv = { 0, 0 };
208 libusb_handle_events_timeout(ctx, &tv);
209 }
210
211 static void usb_host_add_fd(int fd, short events, void *user_data)
212 {
213 qemu_set_fd_handler(fd,
214 (events & POLLIN) ? usb_host_handle_fd : NULL,
215 (events & POLLOUT) ? usb_host_handle_fd : NULL,
216 ctx);
217 }
218
219 static void usb_host_del_fd(int fd, void *user_data)
220 {
221 qemu_set_fd_handler(fd, NULL, NULL, NULL);
222 }
223
224 static int usb_host_init(void)
225 {
226 const struct libusb_pollfd **poll;
227 int i, rc;
228
229 if (ctx) {
230 return 0;
231 }
232 rc = libusb_init(&ctx);
233 if (rc != 0) {
234 return -1;
235 }
236 libusb_set_debug(ctx, loglevel);
237
238 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
239 usb_host_del_fd,
240 ctx);
241 poll = libusb_get_pollfds(ctx);
242 if (poll) {
243 for (i = 0; poll[i] != NULL; i++) {
244 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
245 }
246 }
247 free(poll);
248 return 0;
249 }
250
251 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
252 {
253 uint8_t path[7];
254 size_t off;
255 int rc, i;
256
257 #if LIBUSBX_API_VERSION >= 0x01000102
258 rc = libusb_get_port_numbers(dev, path, 7);
259 #else
260 rc = libusb_get_port_path(ctx, dev, path, 7);
261 #endif
262 if (rc < 0) {
263 return 0;
264 }
265 off = snprintf(port, len, "%d", path[0]);
266 for (i = 1; i < rc; i++) {
267 off += snprintf(port+off, len-off, ".%d", path[i]);
268 }
269 return off;
270 }
271
272 static void usb_host_libusb_error(const char *func, int rc)
273 {
274 const char *errname;
275
276 if (rc >= 0) {
277 return;
278 }
279
280 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
281 errname = err_names[-rc];
282 } else {
283 errname = "?";
284 }
285 error_report("%s: %d [%s]", func, rc, errname);
286 }
287
288 /* ------------------------------------------------------------------------ */
289
290 static bool usb_host_use_combining(USBEndpoint *ep)
291 {
292 int type;
293
294 if (!ep->pipeline) {
295 return false;
296 }
297 if (ep->pid != USB_TOKEN_IN) {
298 return false;
299 }
300 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
301 if (type != USB_ENDPOINT_XFER_BULK) {
302 return false;
303 }
304 return true;
305 }
306
307 /* ------------------------------------------------------------------------ */
308
309 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
310 bool in, size_t bufsize)
311 {
312 USBHostRequest *r = g_new0(USBHostRequest, 1);
313
314 r->host = s;
315 r->p = p;
316 r->in = in;
317 r->xfer = libusb_alloc_transfer(0);
318 if (bufsize) {
319 r->buffer = g_malloc(bufsize);
320 }
321 QTAILQ_INSERT_TAIL(&s->requests, r, next);
322 return r;
323 }
324
325 static void usb_host_req_free(USBHostRequest *r)
326 {
327 if (r->host) {
328 QTAILQ_REMOVE(&r->host->requests, r, next);
329 }
330 libusb_free_transfer(r->xfer);
331 g_free(r->buffer);
332 g_free(r);
333 }
334
335 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
336 {
337 USBHostRequest *r;
338
339 QTAILQ_FOREACH(r, &s->requests, next) {
340 if (r->p == p) {
341 return r;
342 }
343 }
344 return NULL;
345 }
346
347 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
348 {
349 USBHostRequest *r = xfer->user_data;
350 USBHostDevice *s = r->host;
351 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
352
353 if (r->p == NULL) {
354 goto out; /* request was canceled */
355 }
356
357 r->p->status = status_map[xfer->status];
358 r->p->actual_length = xfer->actual_length;
359 if (r->in && xfer->actual_length) {
360 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
361
362 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
363 * to work redirected to a not superspeed capable hcd */
364 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
365 r->cbuf[7] == 9) {
366 r->cbuf[7] = 64;
367 }
368 }
369 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
370 r->p->status, r->p->actual_length);
371 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
372
373 out:
374 usb_host_req_free(r);
375 if (disconnect) {
376 usb_host_nodev(s);
377 }
378 }
379
380 static void usb_host_req_complete_data(struct libusb_transfer *xfer)
381 {
382 USBHostRequest *r = xfer->user_data;
383 USBHostDevice *s = r->host;
384 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
385
386 if (r->p == NULL) {
387 goto out; /* request was canceled */
388 }
389
390 r->p->status = status_map[xfer->status];
391 if (r->in && xfer->actual_length) {
392 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
393 }
394 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
395 r->p->status, r->p->actual_length);
396 if (usb_host_use_combining(r->p->ep)) {
397 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
398 } else {
399 usb_packet_complete(USB_DEVICE(s), r->p);
400 }
401
402 out:
403 usb_host_req_free(r);
404 if (disconnect) {
405 usb_host_nodev(s);
406 }
407 }
408
409 static void usb_host_req_abort(USBHostRequest *r)
410 {
411 USBHostDevice *s = r->host;
412 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
413
414 if (inflight) {
415 r->p->status = USB_RET_NODEV;
416 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
417 r->p->status, r->p->actual_length);
418 if (r->p->ep->nr == 0) {
419 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
420 } else {
421 usb_packet_complete(USB_DEVICE(s), r->p);
422 }
423 r->p = NULL;
424 }
425
426 QTAILQ_REMOVE(&r->host->requests, r, next);
427 r->host = NULL;
428
429 if (inflight) {
430 libusb_cancel_transfer(r->xfer);
431 }
432 }
433
434 /* ------------------------------------------------------------------------ */
435
436 static void usb_host_req_complete_iso(struct libusb_transfer *transfer)
437 {
438 USBHostIsoXfer *xfer = transfer->user_data;
439
440 if (!xfer) {
441 /* USBHostIsoXfer released while inflight */
442 g_free(transfer->buffer);
443 libusb_free_transfer(transfer);
444 return;
445 }
446
447 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
448 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
449 USBHostDevice *s = xfer->ring->host;
450 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
451 }
452 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
453 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
454 } else {
455 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
456 }
457 }
458
459 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
460 {
461 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
462 USBHostIsoXfer *xfer;
463 /* FIXME: check interval (for now assume one xfer per frame) */
464 int packets = s->iso_urb_frames;
465 int i;
466
467 ring->host = s;
468 ring->ep = ep;
469 QTAILQ_INIT(&ring->unused);
470 QTAILQ_INIT(&ring->inflight);
471 QTAILQ_INIT(&ring->copy);
472 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
473
474 for (i = 0; i < s->iso_urb_count; i++) {
475 xfer = g_new0(USBHostIsoXfer, 1);
476 xfer->ring = ring;
477 xfer->xfer = libusb_alloc_transfer(packets);
478 xfer->xfer->dev_handle = s->dh;
479 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
480
481 xfer->xfer->endpoint = ring->ep->nr;
482 if (ring->ep->pid == USB_TOKEN_IN) {
483 xfer->xfer->endpoint |= USB_DIR_IN;
484 }
485 xfer->xfer->callback = usb_host_req_complete_iso;
486 xfer->xfer->user_data = xfer;
487
488 xfer->xfer->num_iso_packets = packets;
489 xfer->xfer->length = ring->ep->max_packet_size * packets;
490 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
491
492 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
493 }
494
495 return ring;
496 }
497
498 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
499 {
500 USBHostIsoRing *ring;
501
502 QTAILQ_FOREACH(ring, &s->isorings, next) {
503 if (ring->ep == ep) {
504 return ring;
505 }
506 }
507 return NULL;
508 }
509
510 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
511 {
512 libusb_set_iso_packet_lengths(xfer->xfer,
513 xfer->ring->ep->max_packet_size);
514 xfer->packet = 0;
515 xfer->copy_complete = false;
516 }
517
518 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
519 {
520 if (inflight) {
521 xfer->xfer->user_data = NULL;
522 } else {
523 g_free(xfer->xfer->buffer);
524 libusb_free_transfer(xfer->xfer);
525 }
526 g_free(xfer);
527 }
528
529 static void usb_host_iso_free(USBHostIsoRing *ring)
530 {
531 USBHostIsoXfer *xfer;
532
533 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
534 QTAILQ_REMOVE(&ring->inflight, xfer, next);
535 usb_host_iso_free_xfer(xfer, true);
536 }
537 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
538 QTAILQ_REMOVE(&ring->unused, xfer, next);
539 usb_host_iso_free_xfer(xfer, false);
540 }
541 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
542 QTAILQ_REMOVE(&ring->copy, xfer, next);
543 usb_host_iso_free_xfer(xfer, false);
544 }
545
546 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
547 g_free(ring);
548 }
549
550 static void usb_host_iso_free_all(USBHostDevice *s)
551 {
552 USBHostIsoRing *ring;
553
554 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
555 usb_host_iso_free(ring);
556 }
557 }
558
559 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
560 {
561 unsigned int psize;
562 unsigned char *buf;
563
564 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
565 if (p->pid == USB_TOKEN_OUT) {
566 psize = p->iov.size;
567 if (psize > xfer->ring->ep->max_packet_size) {
568 /* should not happen (guest bug) */
569 psize = xfer->ring->ep->max_packet_size;
570 }
571 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
572 } else {
573 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
574 if (psize > p->iov.size) {
575 /* should not happen (guest bug) */
576 psize = p->iov.size;
577 }
578 }
579 usb_packet_copy(p, buf, psize);
580 xfer->packet++;
581 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
582 return xfer->copy_complete;
583 }
584
585 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
586 {
587 USBHostIsoRing *ring;
588 USBHostIsoXfer *xfer;
589 bool disconnect = false;
590 int rc;
591
592 ring = usb_host_iso_find(s, p->ep);
593 if (ring == NULL) {
594 ring = usb_host_iso_alloc(s, p->ep);
595 }
596
597 /* copy data to guest */
598 xfer = QTAILQ_FIRST(&ring->copy);
599 if (xfer != NULL) {
600 if (usb_host_iso_data_copy(xfer, p)) {
601 QTAILQ_REMOVE(&ring->copy, xfer, next);
602 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
603 }
604 }
605
606 /* submit empty bufs to host */
607 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
608 QTAILQ_REMOVE(&ring->unused, xfer, next);
609 usb_host_iso_reset_xfer(xfer);
610 rc = libusb_submit_transfer(xfer->xfer);
611 if (rc != 0) {
612 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
613 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
614 if (rc == LIBUSB_ERROR_NO_DEVICE) {
615 disconnect = true;
616 }
617 break;
618 }
619 if (QTAILQ_EMPTY(&ring->inflight)) {
620 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
621 }
622 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
623 }
624
625 if (disconnect) {
626 usb_host_nodev(s);
627 }
628 }
629
630 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
631 {
632 USBHostIsoRing *ring;
633 USBHostIsoXfer *xfer;
634 bool disconnect = false;
635 int rc, filled = 0;
636
637 ring = usb_host_iso_find(s, p->ep);
638 if (ring == NULL) {
639 ring = usb_host_iso_alloc(s, p->ep);
640 }
641
642 /* copy data from guest */
643 xfer = QTAILQ_FIRST(&ring->copy);
644 while (xfer != NULL && xfer->copy_complete) {
645 filled++;
646 xfer = QTAILQ_NEXT(xfer, next);
647 }
648 if (xfer == NULL) {
649 xfer = QTAILQ_FIRST(&ring->unused);
650 if (xfer == NULL) {
651 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
652 return;
653 }
654 QTAILQ_REMOVE(&ring->unused, xfer, next);
655 usb_host_iso_reset_xfer(xfer);
656 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
657 }
658 usb_host_iso_data_copy(xfer, p);
659
660 if (QTAILQ_EMPTY(&ring->inflight)) {
661 /* wait until half of our buffers are filled
662 before kicking the iso out stream */
663 if (filled*2 < s->iso_urb_count) {
664 return;
665 }
666 }
667
668 /* submit filled bufs to host */
669 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
670 xfer->copy_complete) {
671 QTAILQ_REMOVE(&ring->copy, xfer, next);
672 rc = libusb_submit_transfer(xfer->xfer);
673 if (rc != 0) {
674 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
675 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
676 if (rc == LIBUSB_ERROR_NO_DEVICE) {
677 disconnect = true;
678 }
679 break;
680 }
681 if (QTAILQ_EMPTY(&ring->inflight)) {
682 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
683 }
684 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
685 }
686
687 if (disconnect) {
688 usb_host_nodev(s);
689 }
690 }
691
692 /* ------------------------------------------------------------------------ */
693
694 static void usb_host_speed_compat(USBHostDevice *s)
695 {
696 USBDevice *udev = USB_DEVICE(s);
697 struct libusb_config_descriptor *conf;
698 const struct libusb_interface_descriptor *intf;
699 const struct libusb_endpoint_descriptor *endp;
700 #ifdef HAVE_STREAMS
701 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
702 #endif
703 bool compat_high = true;
704 bool compat_full = true;
705 uint8_t type;
706 int rc, c, i, a, e;
707
708 for (c = 0;; c++) {
709 rc = libusb_get_config_descriptor(s->dev, c, &conf);
710 if (rc != 0) {
711 break;
712 }
713 for (i = 0; i < conf->bNumInterfaces; i++) {
714 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
715 intf = &conf->interface[i].altsetting[a];
716 for (e = 0; e < intf->bNumEndpoints; e++) {
717 endp = &intf->endpoint[e];
718 type = endp->bmAttributes & 0x3;
719 switch (type) {
720 case 0x01: /* ISO */
721 compat_full = false;
722 compat_high = false;
723 break;
724 case 0x02: /* BULK */
725 #ifdef HAVE_STREAMS
726 rc = libusb_get_ss_endpoint_companion_descriptor
727 (ctx, endp, &endp_ss_comp);
728 if (rc == LIBUSB_SUCCESS) {
729 libusb_free_ss_endpoint_companion_descriptor
730 (endp_ss_comp);
731 compat_full = false;
732 compat_high = false;
733 }
734 #endif
735 break;
736 case 0x03: /* INTERRUPT */
737 if (endp->wMaxPacketSize > 64) {
738 compat_full = false;
739 }
740 if (endp->wMaxPacketSize > 1024) {
741 compat_high = false;
742 }
743 break;
744 }
745 }
746 }
747 }
748 libusb_free_config_descriptor(conf);
749 }
750
751 udev->speedmask = (1 << udev->speed);
752 if (udev->speed == USB_SPEED_SUPER && compat_high) {
753 udev->speedmask |= USB_SPEED_MASK_HIGH;
754 }
755 if (udev->speed == USB_SPEED_SUPER && compat_full) {
756 udev->speedmask |= USB_SPEED_MASK_FULL;
757 }
758 if (udev->speed == USB_SPEED_HIGH && compat_full) {
759 udev->speedmask |= USB_SPEED_MASK_FULL;
760 }
761 }
762
763 static void usb_host_ep_update(USBHostDevice *s)
764 {
765 static const char *tname[] = {
766 [USB_ENDPOINT_XFER_CONTROL] = "control",
767 [USB_ENDPOINT_XFER_ISOC] = "isoc",
768 [USB_ENDPOINT_XFER_BULK] = "bulk",
769 [USB_ENDPOINT_XFER_INT] = "int",
770 };
771 USBDevice *udev = USB_DEVICE(s);
772 struct libusb_config_descriptor *conf;
773 const struct libusb_interface_descriptor *intf;
774 const struct libusb_endpoint_descriptor *endp;
775 #ifdef HAVE_STREAMS
776 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
777 #endif
778 uint8_t devep, type;
779 int pid, ep;
780 int rc, i, e;
781
782 usb_ep_reset(udev);
783 rc = libusb_get_active_config_descriptor(s->dev, &conf);
784 if (rc != 0) {
785 return;
786 }
787 trace_usb_host_parse_config(s->bus_num, s->addr,
788 conf->bConfigurationValue, true);
789
790 for (i = 0; i < conf->bNumInterfaces; i++) {
791 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
792 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
793 trace_usb_host_parse_interface(s->bus_num, s->addr,
794 intf->bInterfaceNumber,
795 intf->bAlternateSetting, true);
796 for (e = 0; e < intf->bNumEndpoints; e++) {
797 endp = &intf->endpoint[e];
798
799 devep = endp->bEndpointAddress;
800 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
801 ep = devep & 0xf;
802 type = endp->bmAttributes & 0x3;
803
804 if (ep == 0) {
805 trace_usb_host_parse_error(s->bus_num, s->addr,
806 "invalid endpoint address");
807 return;
808 }
809 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
810 trace_usb_host_parse_error(s->bus_num, s->addr,
811 "duplicate endpoint address");
812 return;
813 }
814
815 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
816 (devep & USB_DIR_IN) ? "in" : "out",
817 tname[type], true);
818 usb_ep_set_max_packet_size(udev, pid, ep,
819 endp->wMaxPacketSize);
820 usb_ep_set_type(udev, pid, ep, type);
821 usb_ep_set_ifnum(udev, pid, ep, i);
822 usb_ep_set_halted(udev, pid, ep, 0);
823 #ifdef HAVE_STREAMS
824 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
825 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
826 &endp_ss_comp) == LIBUSB_SUCCESS) {
827 usb_ep_set_max_streams(udev, pid, ep,
828 endp_ss_comp->bmAttributes);
829 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
830 }
831 #endif
832 }
833 }
834
835 libusb_free_config_descriptor(conf);
836 }
837
838 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
839 {
840 USBDevice *udev = USB_DEVICE(s);
841 int bus_num = libusb_get_bus_number(dev);
842 int addr = libusb_get_device_address(dev);
843 int rc;
844 Error *local_err = NULL;
845
846 trace_usb_host_open_started(bus_num, addr);
847
848 if (s->dh != NULL) {
849 goto fail;
850 }
851 rc = libusb_open(dev, &s->dh);
852 if (rc != 0) {
853 goto fail;
854 }
855
856 s->dev = dev;
857 s->bus_num = bus_num;
858 s->addr = addr;
859
860 usb_host_detach_kernel(s);
861
862 libusb_get_device_descriptor(dev, &s->ddesc);
863 usb_host_get_port(s->dev, s->port, sizeof(s->port));
864
865 usb_ep_init(udev);
866 usb_host_ep_update(s);
867
868 udev->speed = speed_map[libusb_get_device_speed(dev)];
869 usb_host_speed_compat(s);
870
871 if (s->ddesc.iProduct) {
872 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
873 (unsigned char *)udev->product_desc,
874 sizeof(udev->product_desc));
875 } else {
876 snprintf(udev->product_desc, sizeof(udev->product_desc),
877 "host:%d.%d", bus_num, addr);
878 }
879
880 usb_device_attach(udev, &local_err);
881 if (local_err) {
882 error_report_err(local_err);
883 goto fail;
884 }
885
886 trace_usb_host_open_success(bus_num, addr);
887 return 0;
888
889 fail:
890 trace_usb_host_open_failure(bus_num, addr);
891 if (s->dh != NULL) {
892 usb_host_release_interfaces(s);
893 libusb_reset_device(s->dh);
894 usb_host_attach_kernel(s);
895 libusb_close(s->dh);
896 s->dh = NULL;
897 s->dev = NULL;
898 }
899 return -1;
900 }
901
902 static void usb_host_abort_xfers(USBHostDevice *s)
903 {
904 USBHostRequest *r, *rtmp;
905
906 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
907 usb_host_req_abort(r);
908 }
909 }
910
911 static int usb_host_close(USBHostDevice *s)
912 {
913 USBDevice *udev = USB_DEVICE(s);
914
915 if (s->dh == NULL) {
916 return -1;
917 }
918
919 trace_usb_host_close(s->bus_num, s->addr);
920
921 usb_host_abort_xfers(s);
922 usb_host_iso_free_all(s);
923
924 if (udev->attached) {
925 usb_device_detach(udev);
926 }
927
928 usb_host_release_interfaces(s);
929 libusb_reset_device(s->dh);
930 usb_host_attach_kernel(s);
931 libusb_close(s->dh);
932 s->dh = NULL;
933 s->dev = NULL;
934
935 usb_host_auto_check(NULL);
936 return 0;
937 }
938
939 static void usb_host_nodev_bh(void *opaque)
940 {
941 USBHostDevice *s = opaque;
942 usb_host_close(s);
943 }
944
945 static void usb_host_nodev(USBHostDevice *s)
946 {
947 if (!s->bh_nodev) {
948 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
949 }
950 qemu_bh_schedule(s->bh_nodev);
951 }
952
953 static void usb_host_exit_notifier(struct Notifier *n, void *data)
954 {
955 USBHostDevice *s = container_of(n, USBHostDevice, exit);
956
957 if (s->dh) {
958 usb_host_release_interfaces(s);
959 usb_host_attach_kernel(s);
960 }
961 }
962
963 static void usb_host_realize(USBDevice *udev, Error **errp)
964 {
965 USBHostDevice *s = USB_HOST_DEVICE(udev);
966
967 if (s->match.vendor_id > 0xffff) {
968 error_setg(errp, "vendorid out of range");
969 return;
970 }
971 if (s->match.product_id > 0xffff) {
972 error_setg(errp, "productid out of range");
973 return;
974 }
975 if (s->match.addr > 127) {
976 error_setg(errp, "hostaddr out of range");
977 return;
978 }
979
980 loglevel = s->loglevel;
981 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
982 udev->auto_attach = 0;
983 QTAILQ_INIT(&s->requests);
984 QTAILQ_INIT(&s->isorings);
985
986 s->exit.notify = usb_host_exit_notifier;
987 qemu_add_exit_notifier(&s->exit);
988
989 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
990 usb_host_auto_check(NULL);
991 }
992
993 static void usb_host_instance_init(Object *obj)
994 {
995 USBDevice *udev = USB_DEVICE(obj);
996 USBHostDevice *s = USB_HOST_DEVICE(udev);
997
998 device_add_bootindex_property(obj, &s->bootindex,
999 "bootindex", NULL,
1000 &udev->qdev, NULL);
1001 }
1002
1003 static void usb_host_handle_destroy(USBDevice *udev)
1004 {
1005 USBHostDevice *s = USB_HOST_DEVICE(udev);
1006
1007 qemu_remove_exit_notifier(&s->exit);
1008 QTAILQ_REMOVE(&hostdevs, s, next);
1009 usb_host_close(s);
1010 }
1011
1012 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1013 {
1014 USBHostDevice *s = USB_HOST_DEVICE(udev);
1015 USBHostRequest *r;
1016
1017 if (p->combined) {
1018 usb_combined_packet_cancel(udev, p);
1019 return;
1020 }
1021
1022 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1023
1024 r = usb_host_req_find(s, p);
1025 if (r && r->p) {
1026 r->p = NULL; /* mark as dead */
1027 libusb_cancel_transfer(r->xfer);
1028 }
1029 }
1030
1031 static void usb_host_detach_kernel(USBHostDevice *s)
1032 {
1033 struct libusb_config_descriptor *conf;
1034 int rc, i;
1035
1036 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1037 if (rc != 0) {
1038 return;
1039 }
1040 for (i = 0; i < conf->bNumInterfaces; i++) {
1041 rc = libusb_kernel_driver_active(s->dh, i);
1042 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1043 if (rc != 1) {
1044 continue;
1045 }
1046 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1047 rc = libusb_detach_kernel_driver(s->dh, i);
1048 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1049 s->ifs[i].detached = true;
1050 }
1051 libusb_free_config_descriptor(conf);
1052 }
1053
1054 static void usb_host_attach_kernel(USBHostDevice *s)
1055 {
1056 struct libusb_config_descriptor *conf;
1057 int rc, i;
1058
1059 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1060 if (rc != 0) {
1061 return;
1062 }
1063 for (i = 0; i < conf->bNumInterfaces; i++) {
1064 if (!s->ifs[i].detached) {
1065 continue;
1066 }
1067 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1068 libusb_attach_kernel_driver(s->dh, i);
1069 s->ifs[i].detached = false;
1070 }
1071 libusb_free_config_descriptor(conf);
1072 }
1073
1074 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1075 {
1076 USBDevice *udev = USB_DEVICE(s);
1077 struct libusb_config_descriptor *conf;
1078 int rc, i;
1079
1080 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1081 udev->altsetting[i] = 0;
1082 }
1083 udev->ninterfaces = 0;
1084 udev->configuration = 0;
1085
1086 usb_host_detach_kernel(s);
1087
1088 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1089 if (rc != 0) {
1090 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1091 /* address state - ignore */
1092 return USB_RET_SUCCESS;
1093 }
1094 return USB_RET_STALL;
1095 }
1096
1097 for (i = 0; i < conf->bNumInterfaces; i++) {
1098 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1099 rc = libusb_claim_interface(s->dh, i);
1100 usb_host_libusb_error("libusb_claim_interface", rc);
1101 if (rc != 0) {
1102 return USB_RET_STALL;
1103 }
1104 s->ifs[i].claimed = true;
1105 }
1106
1107 udev->ninterfaces = conf->bNumInterfaces;
1108 udev->configuration = configuration;
1109
1110 libusb_free_config_descriptor(conf);
1111 return USB_RET_SUCCESS;
1112 }
1113
1114 static void usb_host_release_interfaces(USBHostDevice *s)
1115 {
1116 USBDevice *udev = USB_DEVICE(s);
1117 int i, rc;
1118
1119 for (i = 0; i < udev->ninterfaces; i++) {
1120 if (!s->ifs[i].claimed) {
1121 continue;
1122 }
1123 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1124 rc = libusb_release_interface(s->dh, i);
1125 usb_host_libusb_error("libusb_release_interface", rc);
1126 s->ifs[i].claimed = false;
1127 }
1128 }
1129
1130 static void usb_host_set_address(USBHostDevice *s, int addr)
1131 {
1132 USBDevice *udev = USB_DEVICE(s);
1133
1134 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1135 udev->addr = addr;
1136 }
1137
1138 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1139 {
1140 int rc;
1141
1142 trace_usb_host_set_config(s->bus_num, s->addr, config);
1143
1144 usb_host_release_interfaces(s);
1145 rc = libusb_set_configuration(s->dh, config);
1146 if (rc != 0) {
1147 usb_host_libusb_error("libusb_set_configuration", rc);
1148 p->status = USB_RET_STALL;
1149 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1150 usb_host_nodev(s);
1151 }
1152 return;
1153 }
1154 p->status = usb_host_claim_interfaces(s, config);
1155 if (p->status != USB_RET_SUCCESS) {
1156 return;
1157 }
1158 usb_host_ep_update(s);
1159 }
1160
1161 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1162 USBPacket *p)
1163 {
1164 USBDevice *udev = USB_DEVICE(s);
1165 int rc;
1166
1167 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1168
1169 usb_host_iso_free_all(s);
1170
1171 if (iface >= USB_MAX_INTERFACES) {
1172 p->status = USB_RET_STALL;
1173 return;
1174 }
1175
1176 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1177 if (rc != 0) {
1178 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1179 p->status = USB_RET_STALL;
1180 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1181 usb_host_nodev(s);
1182 }
1183 return;
1184 }
1185
1186 udev->altsetting[iface] = alt;
1187 usb_host_ep_update(s);
1188 }
1189
1190 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1191 int request, int value, int index,
1192 int length, uint8_t *data)
1193 {
1194 USBHostDevice *s = USB_HOST_DEVICE(udev);
1195 USBHostRequest *r;
1196 int rc;
1197
1198 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1199
1200 if (s->dh == NULL) {
1201 p->status = USB_RET_NODEV;
1202 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1203 return;
1204 }
1205
1206 switch (request) {
1207 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1208 usb_host_set_address(s, value);
1209 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1210 return;
1211
1212 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1213 usb_host_set_config(s, value & 0xff, p);
1214 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1215 return;
1216
1217 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1218 usb_host_set_interface(s, index, value, p);
1219 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1220 return;
1221
1222 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1223 if (value == 0) { /* clear halt */
1224 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1225 libusb_clear_halt(s->dh, index);
1226 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1227 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1228 return;
1229 }
1230 }
1231
1232 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1233 r->cbuf = data;
1234 r->clen = length;
1235 memcpy(r->buffer, udev->setup_buf, 8);
1236 if (!r->in) {
1237 memcpy(r->buffer + 8, r->cbuf, r->clen);
1238 }
1239
1240 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1241 * to work redirected to a not superspeed capable hcd */
1242 if (udev->speed == USB_SPEED_SUPER &&
1243 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1244 request == 0x8006 && value == 0x100 && index == 0) {
1245 r->usb3ep0quirk = true;
1246 }
1247
1248 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1249 usb_host_req_complete_ctrl, r,
1250 CONTROL_TIMEOUT);
1251 rc = libusb_submit_transfer(r->xfer);
1252 if (rc != 0) {
1253 p->status = USB_RET_NODEV;
1254 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1255 p->status, p->actual_length);
1256 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1257 usb_host_nodev(s);
1258 }
1259 return;
1260 }
1261
1262 p->status = USB_RET_ASYNC;
1263 }
1264
1265 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1266 {
1267 USBHostDevice *s = USB_HOST_DEVICE(udev);
1268 USBHostRequest *r;
1269 size_t size;
1270 int ep, rc;
1271
1272 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1273 p->status = USB_RET_ADD_TO_QUEUE;
1274 return;
1275 }
1276
1277 trace_usb_host_req_data(s->bus_num, s->addr, p,
1278 p->pid == USB_TOKEN_IN,
1279 p->ep->nr, p->iov.size);
1280
1281 if (s->dh == NULL) {
1282 p->status = USB_RET_NODEV;
1283 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1284 return;
1285 }
1286 if (p->ep->halted) {
1287 p->status = USB_RET_STALL;
1288 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1289 return;
1290 }
1291
1292 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1293 case USB_ENDPOINT_XFER_BULK:
1294 size = usb_packet_size(p);
1295 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1296 if (!r->in) {
1297 usb_packet_copy(p, r->buffer, size);
1298 }
1299 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1300 if (p->stream) {
1301 #ifdef HAVE_STREAMS
1302 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1303 r->buffer, size,
1304 usb_host_req_complete_data, r,
1305 BULK_TIMEOUT);
1306 #else
1307 usb_host_req_free(r);
1308 p->status = USB_RET_STALL;
1309 return;
1310 #endif
1311 } else {
1312 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1313 r->buffer, size,
1314 usb_host_req_complete_data, r,
1315 BULK_TIMEOUT);
1316 }
1317 break;
1318 case USB_ENDPOINT_XFER_INT:
1319 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1320 if (!r->in) {
1321 usb_packet_copy(p, r->buffer, p->iov.size);
1322 }
1323 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1324 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1325 r->buffer, p->iov.size,
1326 usb_host_req_complete_data, r,
1327 INTR_TIMEOUT);
1328 break;
1329 case USB_ENDPOINT_XFER_ISOC:
1330 if (p->pid == USB_TOKEN_IN) {
1331 usb_host_iso_data_in(s, p);
1332 } else {
1333 usb_host_iso_data_out(s, p);
1334 }
1335 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1336 p->status, p->actual_length);
1337 return;
1338 default:
1339 p->status = USB_RET_STALL;
1340 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1341 p->status, p->actual_length);
1342 return;
1343 }
1344
1345 rc = libusb_submit_transfer(r->xfer);
1346 if (rc != 0) {
1347 p->status = USB_RET_NODEV;
1348 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1349 p->status, p->actual_length);
1350 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1351 usb_host_nodev(s);
1352 }
1353 return;
1354 }
1355
1356 p->status = USB_RET_ASYNC;
1357 }
1358
1359 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1360 {
1361 if (usb_host_use_combining(ep)) {
1362 usb_ep_combine_input_packets(ep);
1363 }
1364 }
1365
1366 static void usb_host_handle_reset(USBDevice *udev)
1367 {
1368 USBHostDevice *s = USB_HOST_DEVICE(udev);
1369 int rc;
1370
1371 trace_usb_host_reset(s->bus_num, s->addr);
1372
1373 rc = libusb_reset_device(s->dh);
1374 if (rc != 0) {
1375 usb_host_nodev(s);
1376 }
1377 }
1378
1379 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1380 int nr_eps, int streams)
1381 {
1382 #ifdef HAVE_STREAMS
1383 USBHostDevice *s = USB_HOST_DEVICE(udev);
1384 unsigned char endpoints[30];
1385 int i, rc;
1386
1387 for (i = 0; i < nr_eps; i++) {
1388 endpoints[i] = eps[i]->nr;
1389 if (eps[i]->pid == USB_TOKEN_IN) {
1390 endpoints[i] |= 0x80;
1391 }
1392 }
1393 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1394 if (rc < 0) {
1395 usb_host_libusb_error("libusb_alloc_streams", rc);
1396 } else if (rc != streams) {
1397 error_report("libusb_alloc_streams: got less streams "
1398 "then requested %d < %d", rc, streams);
1399 }
1400
1401 return (rc == streams) ? 0 : -1;
1402 #else
1403 error_report("libusb_alloc_streams: error not implemented");
1404 return -1;
1405 #endif
1406 }
1407
1408 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1409 int nr_eps)
1410 {
1411 #ifdef HAVE_STREAMS
1412 USBHostDevice *s = USB_HOST_DEVICE(udev);
1413 unsigned char endpoints[30];
1414 int i;
1415
1416 for (i = 0; i < nr_eps; i++) {
1417 endpoints[i] = eps[i]->nr;
1418 if (eps[i]->pid == USB_TOKEN_IN) {
1419 endpoints[i] |= 0x80;
1420 }
1421 }
1422 libusb_free_streams(s->dh, endpoints, nr_eps);
1423 #endif
1424 }
1425
1426 /*
1427 * This is *NOT* about restoring state. We have absolutely no idea
1428 * what state the host device is in at the moment and whenever it is
1429 * still present in the first place. Attemping to contine where we
1430 * left off is impossible.
1431 *
1432 * What we are going to to to here is emulate a surprise removal of
1433 * the usb device passed through, then kick host scan so the device
1434 * will get re-attached (and re-initialized by the guest) in case it
1435 * is still present.
1436 *
1437 * As the device removal will change the state of other devices (usb
1438 * host controller, most likely interrupt controller too) we have to
1439 * wait with it until *all* vmstate is loaded. Thus post_load just
1440 * kicks a bottom half which then does the actual work.
1441 */
1442 static void usb_host_post_load_bh(void *opaque)
1443 {
1444 USBHostDevice *dev = opaque;
1445 USBDevice *udev = USB_DEVICE(dev);
1446
1447 if (dev->dh != NULL) {
1448 usb_host_close(dev);
1449 }
1450 if (udev->attached) {
1451 usb_device_detach(udev);
1452 }
1453 usb_host_auto_check(NULL);
1454 }
1455
1456 static int usb_host_post_load(void *opaque, int version_id)
1457 {
1458 USBHostDevice *dev = opaque;
1459
1460 if (!dev->bh_postld) {
1461 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1462 }
1463 qemu_bh_schedule(dev->bh_postld);
1464 return 0;
1465 }
1466
1467 static const VMStateDescription vmstate_usb_host = {
1468 .name = "usb-host",
1469 .version_id = 1,
1470 .minimum_version_id = 1,
1471 .post_load = usb_host_post_load,
1472 .fields = (VMStateField[]) {
1473 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1474 VMSTATE_END_OF_LIST()
1475 }
1476 };
1477
1478 static Property usb_host_dev_properties[] = {
1479 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1480 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1481 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1482 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1483 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1484 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1485 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1486 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1487 LIBUSB_LOG_LEVEL_WARNING),
1488 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1489 USB_HOST_OPT_PIPELINE, true),
1490 DEFINE_PROP_END_OF_LIST(),
1491 };
1492
1493 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1494 {
1495 DeviceClass *dc = DEVICE_CLASS(klass);
1496 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1497
1498 uc->realize = usb_host_realize;
1499 uc->product_desc = "USB Host Device";
1500 uc->cancel_packet = usb_host_cancel_packet;
1501 uc->handle_data = usb_host_handle_data;
1502 uc->handle_control = usb_host_handle_control;
1503 uc->handle_reset = usb_host_handle_reset;
1504 uc->handle_destroy = usb_host_handle_destroy;
1505 uc->flush_ep_queue = usb_host_flush_ep_queue;
1506 uc->alloc_streams = usb_host_alloc_streams;
1507 uc->free_streams = usb_host_free_streams;
1508 dc->vmsd = &vmstate_usb_host;
1509 dc->props = usb_host_dev_properties;
1510 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1511 }
1512
1513 static TypeInfo usb_host_dev_info = {
1514 .name = TYPE_USB_HOST_DEVICE,
1515 .parent = TYPE_USB_DEVICE,
1516 .instance_size = sizeof(USBHostDevice),
1517 .class_init = usb_host_class_initfn,
1518 .instance_init = usb_host_instance_init,
1519 };
1520
1521 static void usb_host_register_types(void)
1522 {
1523 type_register_static(&usb_host_dev_info);
1524 }
1525
1526 type_init(usb_host_register_types)
1527
1528 /* ------------------------------------------------------------------------ */
1529
1530 static QEMUTimer *usb_auto_timer;
1531 static VMChangeStateEntry *usb_vmstate;
1532
1533 static void usb_host_vm_state(void *unused, int running, RunState state)
1534 {
1535 if (running) {
1536 usb_host_auto_check(unused);
1537 }
1538 }
1539
1540 static void usb_host_auto_check(void *unused)
1541 {
1542 struct USBHostDevice *s;
1543 struct USBAutoFilter *f;
1544 libusb_device **devs = NULL;
1545 struct libusb_device_descriptor ddesc;
1546 int unconnected = 0;
1547 int i, n;
1548
1549 if (usb_host_init() != 0) {
1550 return;
1551 }
1552
1553 if (runstate_is_running()) {
1554 n = libusb_get_device_list(ctx, &devs);
1555 for (i = 0; i < n; i++) {
1556 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1557 continue;
1558 }
1559 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1560 continue;
1561 }
1562 QTAILQ_FOREACH(s, &hostdevs, next) {
1563 f = &s->match;
1564 if (f->bus_num > 0 &&
1565 f->bus_num != libusb_get_bus_number(devs[i])) {
1566 continue;
1567 }
1568 if (f->addr > 0 &&
1569 f->addr != libusb_get_device_address(devs[i])) {
1570 continue;
1571 }
1572 if (f->port != NULL) {
1573 char port[16] = "-";
1574 usb_host_get_port(devs[i], port, sizeof(port));
1575 if (strcmp(f->port, port) != 0) {
1576 continue;
1577 }
1578 }
1579 if (f->vendor_id > 0 &&
1580 f->vendor_id != ddesc.idVendor) {
1581 continue;
1582 }
1583 if (f->product_id > 0 &&
1584 f->product_id != ddesc.idProduct) {
1585 continue;
1586 }
1587
1588 /* We got a match */
1589 s->seen++;
1590 if (s->errcount >= 3) {
1591 continue;
1592 }
1593 if (s->dh != NULL) {
1594 continue;
1595 }
1596 if (usb_host_open(s, devs[i]) < 0) {
1597 s->errcount++;
1598 continue;
1599 }
1600 break;
1601 }
1602 }
1603 libusb_free_device_list(devs, 1);
1604
1605 QTAILQ_FOREACH(s, &hostdevs, next) {
1606 if (s->dh == NULL) {
1607 unconnected++;
1608 }
1609 if (s->seen == 0) {
1610 if (s->dh) {
1611 usb_host_close(s);
1612 }
1613 s->errcount = 0;
1614 }
1615 s->seen = 0;
1616 }
1617
1618 #if 0
1619 if (unconnected == 0) {
1620 /* nothing to watch */
1621 if (usb_auto_timer) {
1622 timer_del(usb_auto_timer);
1623 trace_usb_host_auto_scan_disabled();
1624 }
1625 return;
1626 }
1627 #endif
1628 }
1629
1630 if (!usb_vmstate) {
1631 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1632 }
1633 if (!usb_auto_timer) {
1634 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1635 if (!usb_auto_timer) {
1636 return;
1637 }
1638 trace_usb_host_auto_scan_enabled();
1639 }
1640 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1641 }
1642
1643 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1644 {
1645 libusb_device **devs = NULL;
1646 struct libusb_device_descriptor ddesc;
1647 char port[16];
1648 int i, n;
1649
1650 if (usb_host_init() != 0) {
1651 return;
1652 }
1653
1654 n = libusb_get_device_list(ctx, &devs);
1655 for (i = 0; i < n; i++) {
1656 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1657 continue;
1658 }
1659 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1660 continue;
1661 }
1662 usb_host_get_port(devs[i], port, sizeof(port));
1663 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1664 libusb_get_bus_number(devs[i]),
1665 libusb_get_device_address(devs[i]),
1666 port,
1667 speed_name[libusb_get_device_speed(devs[i])]);
1668 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1669 monitor_printf(mon, " USB device %04x:%04x",
1670 ddesc.idVendor, ddesc.idProduct);
1671 if (ddesc.iProduct) {
1672 libusb_device_handle *handle;
1673 if (libusb_open(devs[i], &handle) == 0) {
1674 unsigned char name[64] = "";
1675 libusb_get_string_descriptor_ascii(handle,
1676 ddesc.iProduct,
1677 name, sizeof(name));
1678 libusb_close(handle);
1679 monitor_printf(mon, ", %s", name);
1680 }
1681 }
1682 monitor_printf(mon, "\n");
1683 }
1684 libusb_free_device_list(devs, 1);
1685 }