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iov: avoid memcpy for "simple" iov_from_buf/iov_to_buf
[qemu.git] / hw / usb / host-libusb.c
blob5e7ec453d0ca5a731f53f8328c2d8d0d55a55ca2
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 "qemu/osdep.h"
37 #include <poll.h>
38 #include <libusb.h>
39
40 #include "qemu-common.h"
41 #include "monitor/monitor.h"
42 #include "qemu/error-report.h"
43 #include "sysemu/sysemu.h"
44 #include "trace.h"
45
46 #include "hw/usb.h"
47
48 /* ------------------------------------------------------------------------ */
49
50 #define TYPE_USB_HOST_DEVICE "usb-host"
51 #define USB_HOST_DEVICE(obj) \
52 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
53
54 typedef struct USBHostDevice USBHostDevice;
55 typedef struct USBHostRequest USBHostRequest;
56 typedef struct USBHostIsoXfer USBHostIsoXfer;
57 typedef struct USBHostIsoRing USBHostIsoRing;
58
59 struct USBAutoFilter {
60 uint32_t bus_num;
61 uint32_t addr;
62 char *port;
63 uint32_t vendor_id;
64 uint32_t product_id;
65 };
66
67 enum USBHostDeviceOptions {
68 USB_HOST_OPT_PIPELINE,
69 };
70
71 struct USBHostDevice {
72 USBDevice parent_obj;
73
74 /* properties */
75 struct USBAutoFilter match;
76 int32_t bootindex;
77 uint32_t iso_urb_count;
78 uint32_t iso_urb_frames;
79 uint32_t options;
80 uint32_t loglevel;
81
82 /* state */
83 QTAILQ_ENTRY(USBHostDevice) next;
84 int seen, errcount;
85 int bus_num;
86 int addr;
87 char port[16];
88
89 libusb_device *dev;
90 libusb_device_handle *dh;
91 struct libusb_device_descriptor ddesc;
92
93 struct {
94 bool detached;
95 bool claimed;
96 } ifs[USB_MAX_INTERFACES];
97
98 /* callbacks & friends */
99 QEMUBH *bh_nodev;
100 QEMUBH *bh_postld;
101 Notifier exit;
102
103 /* request queues */
104 QTAILQ_HEAD(, USBHostRequest) requests;
105 QTAILQ_HEAD(, USBHostIsoRing) isorings;
106 };
107
108 struct USBHostRequest {
109 USBHostDevice *host;
110 USBPacket *p;
111 bool in;
112 struct libusb_transfer *xfer;
113 unsigned char *buffer;
114 unsigned char *cbuf;
115 unsigned int clen;
116 bool usb3ep0quirk;
117 QTAILQ_ENTRY(USBHostRequest) next;
118 };
119
120 struct USBHostIsoXfer {
121 USBHostIsoRing *ring;
122 struct libusb_transfer *xfer;
123 bool copy_complete;
124 unsigned int packet;
125 QTAILQ_ENTRY(USBHostIsoXfer) next;
126 };
127
128 struct USBHostIsoRing {
129 USBHostDevice *host;
130 USBEndpoint *ep;
131 QTAILQ_HEAD(, USBHostIsoXfer) unused;
132 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
133 QTAILQ_HEAD(, USBHostIsoXfer) copy;
134 QTAILQ_ENTRY(USBHostIsoRing) next;
135 };
136
137 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
138 QTAILQ_HEAD_INITIALIZER(hostdevs);
139
140 static void usb_host_auto_check(void *unused);
141 static void usb_host_release_interfaces(USBHostDevice *s);
142 static void usb_host_nodev(USBHostDevice *s);
143 static void usb_host_detach_kernel(USBHostDevice *s);
144 static void usb_host_attach_kernel(USBHostDevice *s);
145
146 /* ------------------------------------------------------------------------ */
147
148 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
149 #define LIBUSB_LOG_LEVEL_WARNING 2
150 #endif
151
152 /* ------------------------------------------------------------------------ */
153
154 #define CONTROL_TIMEOUT 10000 /* 10 sec */
155 #define BULK_TIMEOUT 0 /* unlimited */
156 #define INTR_TIMEOUT 0 /* unlimited */
157
158 #if LIBUSBX_API_VERSION >= 0x01000103
159 # define HAVE_STREAMS 1
160 #endif
161
162 static const char *speed_name[] = {
163 [LIBUSB_SPEED_UNKNOWN] = "?",
164 [LIBUSB_SPEED_LOW] = "1.5",
165 [LIBUSB_SPEED_FULL] = "12",
166 [LIBUSB_SPEED_HIGH] = "480",
167 [LIBUSB_SPEED_SUPER] = "5000",
168 };
169
170 static const unsigned int speed_map[] = {
171 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
172 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
173 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
174 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
175 };
176
177 static const unsigned int status_map[] = {
178 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
179 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
180 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
181 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
182 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
183 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
184 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
185 };
186
187 static const char *err_names[] = {
188 [-LIBUSB_ERROR_IO] = "IO",
189 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
190 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
191 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
192 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
193 [-LIBUSB_ERROR_BUSY] = "BUSY",
194 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
195 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
196 [-LIBUSB_ERROR_PIPE] = "PIPE",
197 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
198 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
199 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
200 [-LIBUSB_ERROR_OTHER] = "OTHER",
201 };
202
203 static libusb_context *ctx;
204 static uint32_t loglevel;
205
206 static void usb_host_handle_fd(void *opaque)
207 {
208 struct timeval tv = { 0, 0 };
209 libusb_handle_events_timeout(ctx, &tv);
210 }
211
212 static void usb_host_add_fd(int fd, short events, void *user_data)
213 {
214 qemu_set_fd_handler(fd,
215 (events & POLLIN) ? usb_host_handle_fd : NULL,
216 (events & POLLOUT) ? usb_host_handle_fd : NULL,
217 ctx);
218 }
219
220 static void usb_host_del_fd(int fd, void *user_data)
221 {
222 qemu_set_fd_handler(fd, NULL, NULL, NULL);
223 }
224
225 static int usb_host_init(void)
226 {
227 const struct libusb_pollfd **poll;
228 int i, rc;
229
230 if (ctx) {
231 return 0;
232 }
233 rc = libusb_init(&ctx);
234 if (rc != 0) {
235 return -1;
236 }
237 libusb_set_debug(ctx, loglevel);
238
239 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
240 usb_host_del_fd,
241 ctx);
242 poll = libusb_get_pollfds(ctx);
243 if (poll) {
244 for (i = 0; poll[i] != NULL; i++) {
245 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
246 }
247 }
248 free(poll);
249 return 0;
250 }
251
252 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
253 {
254 uint8_t path[7];
255 size_t off;
256 int rc, i;
257
258 #if LIBUSBX_API_VERSION >= 0x01000102
259 rc = libusb_get_port_numbers(dev, path, 7);
260 #else
261 rc = libusb_get_port_path(ctx, dev, path, 7);
262 #endif
263 if (rc < 0) {
264 return 0;
265 }
266 off = snprintf(port, len, "%d", path[0]);
267 for (i = 1; i < rc; i++) {
268 off += snprintf(port+off, len-off, ".%d", path[i]);
269 }
270 return off;
271 }
272
273 static void usb_host_libusb_error(const char *func, int rc)
274 {
275 const char *errname;
276
277 if (rc >= 0) {
278 return;
279 }
280
281 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
282 errname = err_names[-rc];
283 } else {
284 errname = "?";
285 }
286 error_report("%s: %d [%s]", func, rc, errname);
287 }
288
289 /* ------------------------------------------------------------------------ */
290
291 static bool usb_host_use_combining(USBEndpoint *ep)
292 {
293 int type;
294
295 if (!ep->pipeline) {
296 return false;
297 }
298 if (ep->pid != USB_TOKEN_IN) {
299 return false;
300 }
301 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
302 if (type != USB_ENDPOINT_XFER_BULK) {
303 return false;
304 }
305 return true;
306 }
307
308 /* ------------------------------------------------------------------------ */
309
310 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
311 bool in, size_t bufsize)
312 {
313 USBHostRequest *r = g_new0(USBHostRequest, 1);
314
315 r->host = s;
316 r->p = p;
317 r->in = in;
318 r->xfer = libusb_alloc_transfer(0);
319 if (bufsize) {
320 r->buffer = g_malloc(bufsize);
321 }
322 QTAILQ_INSERT_TAIL(&s->requests, r, next);
323 return r;
324 }
325
326 static void usb_host_req_free(USBHostRequest *r)
327 {
328 if (r->host) {
329 QTAILQ_REMOVE(&r->host->requests, r, next);
330 }
331 libusb_free_transfer(r->xfer);
332 g_free(r->buffer);
333 g_free(r);
334 }
335
336 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
337 {
338 USBHostRequest *r;
339
340 QTAILQ_FOREACH(r, &s->requests, next) {
341 if (r->p == p) {
342 return r;
343 }
344 }
345 return NULL;
346 }
347
348 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
349 {
350 USBHostRequest *r = xfer->user_data;
351 USBHostDevice *s = r->host;
352 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
353
354 if (r->p == NULL) {
355 goto out; /* request was canceled */
356 }
357
358 r->p->status = status_map[xfer->status];
359 r->p->actual_length = xfer->actual_length;
360 if (r->in && xfer->actual_length) {
361 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
362
363 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
364 * to work redirected to a not superspeed capable hcd */
365 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
366 r->cbuf[7] == 9) {
367 r->cbuf[7] = 64;
368 }
369 }
370 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
371 r->p->status, r->p->actual_length);
372 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
373
374 out:
375 usb_host_req_free(r);
376 if (disconnect) {
377 usb_host_nodev(s);
378 }
379 }
380
381 static void usb_host_req_complete_data(struct libusb_transfer *xfer)
382 {
383 USBHostRequest *r = xfer->user_data;
384 USBHostDevice *s = r->host;
385 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
386
387 if (r->p == NULL) {
388 goto out; /* request was canceled */
389 }
390
391 r->p->status = status_map[xfer->status];
392 if (r->in && xfer->actual_length) {
393 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
394 }
395 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
396 r->p->status, r->p->actual_length);
397 if (usb_host_use_combining(r->p->ep)) {
398 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
399 } else {
400 usb_packet_complete(USB_DEVICE(s), r->p);
401 }
402
403 out:
404 usb_host_req_free(r);
405 if (disconnect) {
406 usb_host_nodev(s);
407 }
408 }
409
410 static void usb_host_req_abort(USBHostRequest *r)
411 {
412 USBHostDevice *s = r->host;
413 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
414
415 if (inflight) {
416 r->p->status = USB_RET_NODEV;
417 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
418 r->p->status, r->p->actual_length);
419 if (r->p->ep->nr == 0) {
420 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
421 } else {
422 usb_packet_complete(USB_DEVICE(s), r->p);
423 }
424 r->p = NULL;
425 }
426
427 QTAILQ_REMOVE(&r->host->requests, r, next);
428 r->host = NULL;
429
430 if (inflight) {
431 libusb_cancel_transfer(r->xfer);
432 }
433 }
434
435 /* ------------------------------------------------------------------------ */
436
437 static void usb_host_req_complete_iso(struct libusb_transfer *transfer)
438 {
439 USBHostIsoXfer *xfer = transfer->user_data;
440
441 if (!xfer) {
442 /* USBHostIsoXfer released while inflight */
443 g_free(transfer->buffer);
444 libusb_free_transfer(transfer);
445 return;
446 }
447
448 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
449 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
450 USBHostDevice *s = xfer->ring->host;
451 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
452 }
453 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
454 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
455 usb_wakeup(xfer->ring->ep, 0);
456 } else {
457 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
458 }
459 }
460
461 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
462 {
463 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
464 USBHostIsoXfer *xfer;
465 /* FIXME: check interval (for now assume one xfer per frame) */
466 int packets = s->iso_urb_frames;
467 int i;
468
469 ring->host = s;
470 ring->ep = ep;
471 QTAILQ_INIT(&ring->unused);
472 QTAILQ_INIT(&ring->inflight);
473 QTAILQ_INIT(&ring->copy);
474 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
475
476 for (i = 0; i < s->iso_urb_count; i++) {
477 xfer = g_new0(USBHostIsoXfer, 1);
478 xfer->ring = ring;
479 xfer->xfer = libusb_alloc_transfer(packets);
480 xfer->xfer->dev_handle = s->dh;
481 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
482
483 xfer->xfer->endpoint = ring->ep->nr;
484 if (ring->ep->pid == USB_TOKEN_IN) {
485 xfer->xfer->endpoint |= USB_DIR_IN;
486 }
487 xfer->xfer->callback = usb_host_req_complete_iso;
488 xfer->xfer->user_data = xfer;
489
490 xfer->xfer->num_iso_packets = packets;
491 xfer->xfer->length = ring->ep->max_packet_size * packets;
492 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
493
494 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
495 }
496
497 return ring;
498 }
499
500 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
501 {
502 USBHostIsoRing *ring;
503
504 QTAILQ_FOREACH(ring, &s->isorings, next) {
505 if (ring->ep == ep) {
506 return ring;
507 }
508 }
509 return NULL;
510 }
511
512 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
513 {
514 libusb_set_iso_packet_lengths(xfer->xfer,
515 xfer->ring->ep->max_packet_size);
516 xfer->packet = 0;
517 xfer->copy_complete = false;
518 }
519
520 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
521 {
522 if (inflight) {
523 xfer->xfer->user_data = NULL;
524 } else {
525 g_free(xfer->xfer->buffer);
526 libusb_free_transfer(xfer->xfer);
527 }
528 g_free(xfer);
529 }
530
531 static void usb_host_iso_free(USBHostIsoRing *ring)
532 {
533 USBHostIsoXfer *xfer;
534
535 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
536 QTAILQ_REMOVE(&ring->inflight, xfer, next);
537 usb_host_iso_free_xfer(xfer, true);
538 }
539 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
540 QTAILQ_REMOVE(&ring->unused, xfer, next);
541 usb_host_iso_free_xfer(xfer, false);
542 }
543 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
544 QTAILQ_REMOVE(&ring->copy, xfer, next);
545 usb_host_iso_free_xfer(xfer, false);
546 }
547
548 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
549 g_free(ring);
550 }
551
552 static void usb_host_iso_free_all(USBHostDevice *s)
553 {
554 USBHostIsoRing *ring;
555
556 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
557 usb_host_iso_free(ring);
558 }
559 }
560
561 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
562 {
563 unsigned int psize;
564 unsigned char *buf;
565
566 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
567 if (p->pid == USB_TOKEN_OUT) {
568 psize = p->iov.size;
569 if (psize > xfer->ring->ep->max_packet_size) {
570 /* should not happen (guest bug) */
571 psize = xfer->ring->ep->max_packet_size;
572 }
573 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
574 } else {
575 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
576 if (psize > p->iov.size) {
577 /* should not happen (guest bug) */
578 psize = p->iov.size;
579 }
580 }
581 usb_packet_copy(p, buf, psize);
582 xfer->packet++;
583 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
584 return xfer->copy_complete;
585 }
586
587 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
588 {
589 USBHostIsoRing *ring;
590 USBHostIsoXfer *xfer;
591 bool disconnect = false;
592 int rc;
593
594 ring = usb_host_iso_find(s, p->ep);
595 if (ring == NULL) {
596 ring = usb_host_iso_alloc(s, p->ep);
597 }
598
599 /* copy data to guest */
600 xfer = QTAILQ_FIRST(&ring->copy);
601 if (xfer != NULL) {
602 if (usb_host_iso_data_copy(xfer, p)) {
603 QTAILQ_REMOVE(&ring->copy, xfer, next);
604 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
605 }
606 }
607
608 /* submit empty bufs to host */
609 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
610 QTAILQ_REMOVE(&ring->unused, xfer, next);
611 usb_host_iso_reset_xfer(xfer);
612 rc = libusb_submit_transfer(xfer->xfer);
613 if (rc != 0) {
614 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
615 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
616 if (rc == LIBUSB_ERROR_NO_DEVICE) {
617 disconnect = true;
618 }
619 break;
620 }
621 if (QTAILQ_EMPTY(&ring->inflight)) {
622 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
623 }
624 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
625 }
626
627 if (disconnect) {
628 usb_host_nodev(s);
629 }
630 }
631
632 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
633 {
634 USBHostIsoRing *ring;
635 USBHostIsoXfer *xfer;
636 bool disconnect = false;
637 int rc, filled = 0;
638
639 ring = usb_host_iso_find(s, p->ep);
640 if (ring == NULL) {
641 ring = usb_host_iso_alloc(s, p->ep);
642 }
643
644 /* copy data from guest */
645 xfer = QTAILQ_FIRST(&ring->copy);
646 while (xfer != NULL && xfer->copy_complete) {
647 filled++;
648 xfer = QTAILQ_NEXT(xfer, next);
649 }
650 if (xfer == NULL) {
651 xfer = QTAILQ_FIRST(&ring->unused);
652 if (xfer == NULL) {
653 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
654 return;
655 }
656 QTAILQ_REMOVE(&ring->unused, xfer, next);
657 usb_host_iso_reset_xfer(xfer);
658 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
659 }
660 usb_host_iso_data_copy(xfer, p);
661
662 if (QTAILQ_EMPTY(&ring->inflight)) {
663 /* wait until half of our buffers are filled
664 before kicking the iso out stream */
665 if (filled*2 < s->iso_urb_count) {
666 return;
667 }
668 }
669
670 /* submit filled bufs to host */
671 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
672 xfer->copy_complete) {
673 QTAILQ_REMOVE(&ring->copy, xfer, next);
674 rc = libusb_submit_transfer(xfer->xfer);
675 if (rc != 0) {
676 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
677 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
678 if (rc == LIBUSB_ERROR_NO_DEVICE) {
679 disconnect = true;
680 }
681 break;
682 }
683 if (QTAILQ_EMPTY(&ring->inflight)) {
684 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
685 }
686 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
687 }
688
689 if (disconnect) {
690 usb_host_nodev(s);
691 }
692 }
693
694 /* ------------------------------------------------------------------------ */
695
696 static void usb_host_speed_compat(USBHostDevice *s)
697 {
698 USBDevice *udev = USB_DEVICE(s);
699 struct libusb_config_descriptor *conf;
700 const struct libusb_interface_descriptor *intf;
701 const struct libusb_endpoint_descriptor *endp;
702 #ifdef HAVE_STREAMS
703 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
704 #endif
705 bool compat_high = true;
706 bool compat_full = true;
707 uint8_t type;
708 int rc, c, i, a, e;
709
710 for (c = 0;; c++) {
711 rc = libusb_get_config_descriptor(s->dev, c, &conf);
712 if (rc != 0) {
713 break;
714 }
715 for (i = 0; i < conf->bNumInterfaces; i++) {
716 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
717 intf = &conf->interface[i].altsetting[a];
718 for (e = 0; e < intf->bNumEndpoints; e++) {
719 endp = &intf->endpoint[e];
720 type = endp->bmAttributes & 0x3;
721 switch (type) {
722 case 0x01: /* ISO */
723 compat_full = false;
724 compat_high = false;
725 break;
726 case 0x02: /* BULK */
727 #ifdef HAVE_STREAMS
728 rc = libusb_get_ss_endpoint_companion_descriptor
729 (ctx, endp, &endp_ss_comp);
730 if (rc == LIBUSB_SUCCESS) {
731 libusb_free_ss_endpoint_companion_descriptor
732 (endp_ss_comp);
733 compat_full = false;
734 compat_high = false;
735 }
736 #endif
737 break;
738 case 0x03: /* INTERRUPT */
739 if (endp->wMaxPacketSize > 64) {
740 compat_full = false;
741 }
742 if (endp->wMaxPacketSize > 1024) {
743 compat_high = false;
744 }
745 break;
746 }
747 }
748 }
749 }
750 libusb_free_config_descriptor(conf);
751 }
752
753 udev->speedmask = (1 << udev->speed);
754 if (udev->speed == USB_SPEED_SUPER && compat_high) {
755 udev->speedmask |= USB_SPEED_MASK_HIGH;
756 }
757 if (udev->speed == USB_SPEED_SUPER && compat_full) {
758 udev->speedmask |= USB_SPEED_MASK_FULL;
759 }
760 if (udev->speed == USB_SPEED_HIGH && compat_full) {
761 udev->speedmask |= USB_SPEED_MASK_FULL;
762 }
763 }
764
765 static void usb_host_ep_update(USBHostDevice *s)
766 {
767 static const char *tname[] = {
768 [USB_ENDPOINT_XFER_CONTROL] = "control",
769 [USB_ENDPOINT_XFER_ISOC] = "isoc",
770 [USB_ENDPOINT_XFER_BULK] = "bulk",
771 [USB_ENDPOINT_XFER_INT] = "int",
772 };
773 USBDevice *udev = USB_DEVICE(s);
774 struct libusb_config_descriptor *conf;
775 const struct libusb_interface_descriptor *intf;
776 const struct libusb_endpoint_descriptor *endp;
777 #ifdef HAVE_STREAMS
778 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
779 #endif
780 uint8_t devep, type;
781 int pid, ep;
782 int rc, i, e;
783
784 usb_ep_reset(udev);
785 rc = libusb_get_active_config_descriptor(s->dev, &conf);
786 if (rc != 0) {
787 return;
788 }
789 trace_usb_host_parse_config(s->bus_num, s->addr,
790 conf->bConfigurationValue, true);
791
792 for (i = 0; i < conf->bNumInterfaces; i++) {
793 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
794 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
795 trace_usb_host_parse_interface(s->bus_num, s->addr,
796 intf->bInterfaceNumber,
797 intf->bAlternateSetting, true);
798 for (e = 0; e < intf->bNumEndpoints; e++) {
799 endp = &intf->endpoint[e];
800
801 devep = endp->bEndpointAddress;
802 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
803 ep = devep & 0xf;
804 type = endp->bmAttributes & 0x3;
805
806 if (ep == 0) {
807 trace_usb_host_parse_error(s->bus_num, s->addr,
808 "invalid endpoint address");
809 return;
810 }
811 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
812 trace_usb_host_parse_error(s->bus_num, s->addr,
813 "duplicate endpoint address");
814 return;
815 }
816
817 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
818 (devep & USB_DIR_IN) ? "in" : "out",
819 tname[type], true);
820 usb_ep_set_max_packet_size(udev, pid, ep,
821 endp->wMaxPacketSize);
822 usb_ep_set_type(udev, pid, ep, type);
823 usb_ep_set_ifnum(udev, pid, ep, i);
824 usb_ep_set_halted(udev, pid, ep, 0);
825 #ifdef HAVE_STREAMS
826 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
827 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
828 &endp_ss_comp) == LIBUSB_SUCCESS) {
829 usb_ep_set_max_streams(udev, pid, ep,
830 endp_ss_comp->bmAttributes);
831 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
832 }
833 #endif
834 }
835 }
836
837 libusb_free_config_descriptor(conf);
838 }
839
840 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
841 {
842 USBDevice *udev = USB_DEVICE(s);
843 int bus_num = libusb_get_bus_number(dev);
844 int addr = libusb_get_device_address(dev);
845 int rc;
846 Error *local_err = NULL;
847
848 trace_usb_host_open_started(bus_num, addr);
849
850 if (s->dh != NULL) {
851 goto fail;
852 }
853 rc = libusb_open(dev, &s->dh);
854 if (rc != 0) {
855 goto fail;
856 }
857
858 s->dev = dev;
859 s->bus_num = bus_num;
860 s->addr = addr;
861
862 usb_host_detach_kernel(s);
863
864 libusb_get_device_descriptor(dev, &s->ddesc);
865 usb_host_get_port(s->dev, s->port, sizeof(s->port));
866
867 usb_ep_init(udev);
868 usb_host_ep_update(s);
869
870 udev->speed = speed_map[libusb_get_device_speed(dev)];
871 usb_host_speed_compat(s);
872
873 if (s->ddesc.iProduct) {
874 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
875 (unsigned char *)udev->product_desc,
876 sizeof(udev->product_desc));
877 } else {
878 snprintf(udev->product_desc, sizeof(udev->product_desc),
879 "host:%d.%d", bus_num, addr);
880 }
881
882 usb_device_attach(udev, &local_err);
883 if (local_err) {
884 error_report_err(local_err);
885 goto fail;
886 }
887
888 trace_usb_host_open_success(bus_num, addr);
889 return 0;
890
891 fail:
892 trace_usb_host_open_failure(bus_num, addr);
893 if (s->dh != NULL) {
894 usb_host_release_interfaces(s);
895 libusb_reset_device(s->dh);
896 usb_host_attach_kernel(s);
897 libusb_close(s->dh);
898 s->dh = NULL;
899 s->dev = NULL;
900 }
901 return -1;
902 }
903
904 static void usb_host_abort_xfers(USBHostDevice *s)
905 {
906 USBHostRequest *r, *rtmp;
907
908 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
909 usb_host_req_abort(r);
910 }
911 }
912
913 static int usb_host_close(USBHostDevice *s)
914 {
915 USBDevice *udev = USB_DEVICE(s);
916
917 if (s->dh == NULL) {
918 return -1;
919 }
920
921 trace_usb_host_close(s->bus_num, s->addr);
922
923 usb_host_abort_xfers(s);
924 usb_host_iso_free_all(s);
925
926 if (udev->attached) {
927 usb_device_detach(udev);
928 }
929
930 usb_host_release_interfaces(s);
931 libusb_reset_device(s->dh);
932 usb_host_attach_kernel(s);
933 libusb_close(s->dh);
934 s->dh = NULL;
935 s->dev = NULL;
936
937 usb_host_auto_check(NULL);
938 return 0;
939 }
940
941 static void usb_host_nodev_bh(void *opaque)
942 {
943 USBHostDevice *s = opaque;
944 usb_host_close(s);
945 }
946
947 static void usb_host_nodev(USBHostDevice *s)
948 {
949 if (!s->bh_nodev) {
950 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
951 }
952 qemu_bh_schedule(s->bh_nodev);
953 }
954
955 static void usb_host_exit_notifier(struct Notifier *n, void *data)
956 {
957 USBHostDevice *s = container_of(n, USBHostDevice, exit);
958
959 if (s->dh) {
960 usb_host_release_interfaces(s);
961 usb_host_attach_kernel(s);
962 }
963 }
964
965 static void usb_host_realize(USBDevice *udev, Error **errp)
966 {
967 USBHostDevice *s = USB_HOST_DEVICE(udev);
968
969 if (s->match.vendor_id > 0xffff) {
970 error_setg(errp, "vendorid out of range");
971 return;
972 }
973 if (s->match.product_id > 0xffff) {
974 error_setg(errp, "productid out of range");
975 return;
976 }
977 if (s->match.addr > 127) {
978 error_setg(errp, "hostaddr out of range");
979 return;
980 }
981
982 loglevel = s->loglevel;
983 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
984 udev->auto_attach = 0;
985 QTAILQ_INIT(&s->requests);
986 QTAILQ_INIT(&s->isorings);
987
988 s->exit.notify = usb_host_exit_notifier;
989 qemu_add_exit_notifier(&s->exit);
990
991 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
992 usb_host_auto_check(NULL);
993 }
994
995 static void usb_host_instance_init(Object *obj)
996 {
997 USBDevice *udev = USB_DEVICE(obj);
998 USBHostDevice *s = USB_HOST_DEVICE(udev);
999
1000 device_add_bootindex_property(obj, &s->bootindex,
1001 "bootindex", NULL,
1002 &udev->qdev, NULL);
1003 }
1004
1005 static void usb_host_handle_destroy(USBDevice *udev)
1006 {
1007 USBHostDevice *s = USB_HOST_DEVICE(udev);
1008
1009 qemu_remove_exit_notifier(&s->exit);
1010 QTAILQ_REMOVE(&hostdevs, s, next);
1011 usb_host_close(s);
1012 }
1013
1014 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1015 {
1016 USBHostDevice *s = USB_HOST_DEVICE(udev);
1017 USBHostRequest *r;
1018
1019 if (p->combined) {
1020 usb_combined_packet_cancel(udev, p);
1021 return;
1022 }
1023
1024 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1025
1026 r = usb_host_req_find(s, p);
1027 if (r && r->p) {
1028 r->p = NULL; /* mark as dead */
1029 libusb_cancel_transfer(r->xfer);
1030 }
1031 }
1032
1033 static void usb_host_detach_kernel(USBHostDevice *s)
1034 {
1035 struct libusb_config_descriptor *conf;
1036 int rc, i;
1037
1038 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1039 if (rc != 0) {
1040 return;
1041 }
1042 for (i = 0; i < conf->bNumInterfaces; i++) {
1043 rc = libusb_kernel_driver_active(s->dh, i);
1044 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1045 if (rc != 1) {
1046 continue;
1047 }
1048 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1049 rc = libusb_detach_kernel_driver(s->dh, i);
1050 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1051 s->ifs[i].detached = true;
1052 }
1053 libusb_free_config_descriptor(conf);
1054 }
1055
1056 static void usb_host_attach_kernel(USBHostDevice *s)
1057 {
1058 struct libusb_config_descriptor *conf;
1059 int rc, i;
1060
1061 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1062 if (rc != 0) {
1063 return;
1064 }
1065 for (i = 0; i < conf->bNumInterfaces; i++) {
1066 if (!s->ifs[i].detached) {
1067 continue;
1068 }
1069 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1070 libusb_attach_kernel_driver(s->dh, i);
1071 s->ifs[i].detached = false;
1072 }
1073 libusb_free_config_descriptor(conf);
1074 }
1075
1076 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1077 {
1078 USBDevice *udev = USB_DEVICE(s);
1079 struct libusb_config_descriptor *conf;
1080 int rc, i;
1081
1082 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1083 udev->altsetting[i] = 0;
1084 }
1085 udev->ninterfaces = 0;
1086 udev->configuration = 0;
1087
1088 usb_host_detach_kernel(s);
1089
1090 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1091 if (rc != 0) {
1092 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1093 /* address state - ignore */
1094 return USB_RET_SUCCESS;
1095 }
1096 return USB_RET_STALL;
1097 }
1098
1099 for (i = 0; i < conf->bNumInterfaces; i++) {
1100 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1101 rc = libusb_claim_interface(s->dh, i);
1102 usb_host_libusb_error("libusb_claim_interface", rc);
1103 if (rc != 0) {
1104 return USB_RET_STALL;
1105 }
1106 s->ifs[i].claimed = true;
1107 }
1108
1109 udev->ninterfaces = conf->bNumInterfaces;
1110 udev->configuration = configuration;
1111
1112 libusb_free_config_descriptor(conf);
1113 return USB_RET_SUCCESS;
1114 }
1115
1116 static void usb_host_release_interfaces(USBHostDevice *s)
1117 {
1118 USBDevice *udev = USB_DEVICE(s);
1119 int i, rc;
1120
1121 for (i = 0; i < udev->ninterfaces; i++) {
1122 if (!s->ifs[i].claimed) {
1123 continue;
1124 }
1125 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1126 rc = libusb_release_interface(s->dh, i);
1127 usb_host_libusb_error("libusb_release_interface", rc);
1128 s->ifs[i].claimed = false;
1129 }
1130 }
1131
1132 static void usb_host_set_address(USBHostDevice *s, int addr)
1133 {
1134 USBDevice *udev = USB_DEVICE(s);
1135
1136 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1137 udev->addr = addr;
1138 }
1139
1140 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1141 {
1142 int rc;
1143
1144 trace_usb_host_set_config(s->bus_num, s->addr, config);
1145
1146 usb_host_release_interfaces(s);
1147 rc = libusb_set_configuration(s->dh, config);
1148 if (rc != 0) {
1149 usb_host_libusb_error("libusb_set_configuration", rc);
1150 p->status = USB_RET_STALL;
1151 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1152 usb_host_nodev(s);
1153 }
1154 return;
1155 }
1156 p->status = usb_host_claim_interfaces(s, config);
1157 if (p->status != USB_RET_SUCCESS) {
1158 return;
1159 }
1160 usb_host_ep_update(s);
1161 }
1162
1163 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1164 USBPacket *p)
1165 {
1166 USBDevice *udev = USB_DEVICE(s);
1167 int rc;
1168
1169 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1170
1171 usb_host_iso_free_all(s);
1172
1173 if (iface >= USB_MAX_INTERFACES) {
1174 p->status = USB_RET_STALL;
1175 return;
1176 }
1177
1178 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1179 if (rc != 0) {
1180 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1181 p->status = USB_RET_STALL;
1182 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1183 usb_host_nodev(s);
1184 }
1185 return;
1186 }
1187
1188 udev->altsetting[iface] = alt;
1189 usb_host_ep_update(s);
1190 }
1191
1192 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1193 int request, int value, int index,
1194 int length, uint8_t *data)
1195 {
1196 USBHostDevice *s = USB_HOST_DEVICE(udev);
1197 USBHostRequest *r;
1198 int rc;
1199
1200 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1201
1202 if (s->dh == NULL) {
1203 p->status = USB_RET_NODEV;
1204 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1205 return;
1206 }
1207
1208 switch (request) {
1209 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1210 usb_host_set_address(s, value);
1211 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1212 return;
1213
1214 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1215 usb_host_set_config(s, value & 0xff, p);
1216 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1217 return;
1218
1219 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1220 usb_host_set_interface(s, index, value, p);
1221 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1222 return;
1223
1224 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1225 if (value == 0) { /* clear halt */
1226 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1227 libusb_clear_halt(s->dh, index);
1228 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1229 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1230 return;
1231 }
1232 }
1233
1234 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1235 r->cbuf = data;
1236 r->clen = length;
1237 memcpy(r->buffer, udev->setup_buf, 8);
1238 if (!r->in) {
1239 memcpy(r->buffer + 8, r->cbuf, r->clen);
1240 }
1241
1242 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1243 * to work redirected to a not superspeed capable hcd */
1244 if ((udev->speedmask & USB_SPEED_MASK_SUPER) &&
1245 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1246 request == 0x8006 && value == 0x100 && index == 0) {
1247 r->usb3ep0quirk = true;
1248 }
1249
1250 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1251 usb_host_req_complete_ctrl, r,
1252 CONTROL_TIMEOUT);
1253 rc = libusb_submit_transfer(r->xfer);
1254 if (rc != 0) {
1255 p->status = USB_RET_NODEV;
1256 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1257 p->status, p->actual_length);
1258 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1259 usb_host_nodev(s);
1260 }
1261 return;
1262 }
1263
1264 p->status = USB_RET_ASYNC;
1265 }
1266
1267 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1268 {
1269 USBHostDevice *s = USB_HOST_DEVICE(udev);
1270 USBHostRequest *r;
1271 size_t size;
1272 int ep, rc;
1273
1274 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1275 p->status = USB_RET_ADD_TO_QUEUE;
1276 return;
1277 }
1278
1279 trace_usb_host_req_data(s->bus_num, s->addr, p,
1280 p->pid == USB_TOKEN_IN,
1281 p->ep->nr, p->iov.size);
1282
1283 if (s->dh == NULL) {
1284 p->status = USB_RET_NODEV;
1285 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1286 return;
1287 }
1288 if (p->ep->halted) {
1289 p->status = USB_RET_STALL;
1290 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1291 return;
1292 }
1293
1294 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1295 case USB_ENDPOINT_XFER_BULK:
1296 size = usb_packet_size(p);
1297 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1298 if (!r->in) {
1299 usb_packet_copy(p, r->buffer, size);
1300 }
1301 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1302 if (p->stream) {
1303 #ifdef HAVE_STREAMS
1304 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1305 r->buffer, size,
1306 usb_host_req_complete_data, r,
1307 BULK_TIMEOUT);
1308 #else
1309 usb_host_req_free(r);
1310 p->status = USB_RET_STALL;
1311 return;
1312 #endif
1313 } else {
1314 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1315 r->buffer, size,
1316 usb_host_req_complete_data, r,
1317 BULK_TIMEOUT);
1318 }
1319 break;
1320 case USB_ENDPOINT_XFER_INT:
1321 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1322 if (!r->in) {
1323 usb_packet_copy(p, r->buffer, p->iov.size);
1324 }
1325 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1326 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1327 r->buffer, p->iov.size,
1328 usb_host_req_complete_data, r,
1329 INTR_TIMEOUT);
1330 break;
1331 case USB_ENDPOINT_XFER_ISOC:
1332 if (p->pid == USB_TOKEN_IN) {
1333 usb_host_iso_data_in(s, p);
1334 } else {
1335 usb_host_iso_data_out(s, p);
1336 }
1337 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1338 p->status, p->actual_length);
1339 return;
1340 default:
1341 p->status = USB_RET_STALL;
1342 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1343 p->status, p->actual_length);
1344 return;
1345 }
1346
1347 rc = libusb_submit_transfer(r->xfer);
1348 if (rc != 0) {
1349 p->status = USB_RET_NODEV;
1350 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1351 p->status, p->actual_length);
1352 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1353 usb_host_nodev(s);
1354 }
1355 return;
1356 }
1357
1358 p->status = USB_RET_ASYNC;
1359 }
1360
1361 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1362 {
1363 if (usb_host_use_combining(ep)) {
1364 usb_ep_combine_input_packets(ep);
1365 }
1366 }
1367
1368 static void usb_host_handle_reset(USBDevice *udev)
1369 {
1370 USBHostDevice *s = USB_HOST_DEVICE(udev);
1371 int rc;
1372
1373 trace_usb_host_reset(s->bus_num, s->addr);
1374
1375 rc = libusb_reset_device(s->dh);
1376 if (rc != 0) {
1377 usb_host_nodev(s);
1378 }
1379 }
1380
1381 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1382 int nr_eps, int streams)
1383 {
1384 #ifdef HAVE_STREAMS
1385 USBHostDevice *s = USB_HOST_DEVICE(udev);
1386 unsigned char endpoints[30];
1387 int i, rc;
1388
1389 for (i = 0; i < nr_eps; i++) {
1390 endpoints[i] = eps[i]->nr;
1391 if (eps[i]->pid == USB_TOKEN_IN) {
1392 endpoints[i] |= 0x80;
1393 }
1394 }
1395 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1396 if (rc < 0) {
1397 usb_host_libusb_error("libusb_alloc_streams", rc);
1398 } else if (rc != streams) {
1399 error_report("libusb_alloc_streams: got less streams "
1400 "then requested %d < %d", rc, streams);
1401 }
1402
1403 return (rc == streams) ? 0 : -1;
1404 #else
1405 error_report("libusb_alloc_streams: error not implemented");
1406 return -1;
1407 #endif
1408 }
1409
1410 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1411 int nr_eps)
1412 {
1413 #ifdef HAVE_STREAMS
1414 USBHostDevice *s = USB_HOST_DEVICE(udev);
1415 unsigned char endpoints[30];
1416 int i;
1417
1418 for (i = 0; i < nr_eps; i++) {
1419 endpoints[i] = eps[i]->nr;
1420 if (eps[i]->pid == USB_TOKEN_IN) {
1421 endpoints[i] |= 0x80;
1422 }
1423 }
1424 libusb_free_streams(s->dh, endpoints, nr_eps);
1425 #endif
1426 }
1427
1428 /*
1429 * This is *NOT* about restoring state. We have absolutely no idea
1430 * what state the host device is in at the moment and whenever it is
1431 * still present in the first place. Attemping to contine where we
1432 * left off is impossible.
1433 *
1434 * What we are going to do here is emulate a surprise removal of
1435 * the usb device passed through, then kick host scan so the device
1436 * will get re-attached (and re-initialized by the guest) in case it
1437 * is still present.
1438 *
1439 * As the device removal will change the state of other devices (usb
1440 * host controller, most likely interrupt controller too) we have to
1441 * wait with it until *all* vmstate is loaded. Thus post_load just
1442 * kicks a bottom half which then does the actual work.
1443 */
1444 static void usb_host_post_load_bh(void *opaque)
1445 {
1446 USBHostDevice *dev = opaque;
1447 USBDevice *udev = USB_DEVICE(dev);
1448
1449 if (dev->dh != NULL) {
1450 usb_host_close(dev);
1451 }
1452 if (udev->attached) {
1453 usb_device_detach(udev);
1454 }
1455 usb_host_auto_check(NULL);
1456 }
1457
1458 static int usb_host_post_load(void *opaque, int version_id)
1459 {
1460 USBHostDevice *dev = opaque;
1461
1462 if (!dev->bh_postld) {
1463 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1464 }
1465 qemu_bh_schedule(dev->bh_postld);
1466 return 0;
1467 }
1468
1469 static const VMStateDescription vmstate_usb_host = {
1470 .name = "usb-host",
1471 .version_id = 1,
1472 .minimum_version_id = 1,
1473 .post_load = usb_host_post_load,
1474 .fields = (VMStateField[]) {
1475 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1476 VMSTATE_END_OF_LIST()
1477 }
1478 };
1479
1480 static Property usb_host_dev_properties[] = {
1481 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1482 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1483 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1484 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1485 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1486 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1487 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1488 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1489 LIBUSB_LOG_LEVEL_WARNING),
1490 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1491 USB_HOST_OPT_PIPELINE, true),
1492 DEFINE_PROP_END_OF_LIST(),
1493 };
1494
1495 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1496 {
1497 DeviceClass *dc = DEVICE_CLASS(klass);
1498 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1499
1500 uc->realize = usb_host_realize;
1501 uc->product_desc = "USB Host Device";
1502 uc->cancel_packet = usb_host_cancel_packet;
1503 uc->handle_data = usb_host_handle_data;
1504 uc->handle_control = usb_host_handle_control;
1505 uc->handle_reset = usb_host_handle_reset;
1506 uc->handle_destroy = usb_host_handle_destroy;
1507 uc->flush_ep_queue = usb_host_flush_ep_queue;
1508 uc->alloc_streams = usb_host_alloc_streams;
1509 uc->free_streams = usb_host_free_streams;
1510 dc->vmsd = &vmstate_usb_host;
1511 dc->props = usb_host_dev_properties;
1512 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1513 }
1514
1515 static TypeInfo usb_host_dev_info = {
1516 .name = TYPE_USB_HOST_DEVICE,
1517 .parent = TYPE_USB_DEVICE,
1518 .instance_size = sizeof(USBHostDevice),
1519 .class_init = usb_host_class_initfn,
1520 .instance_init = usb_host_instance_init,
1521 };
1522
1523 static void usb_host_register_types(void)
1524 {
1525 type_register_static(&usb_host_dev_info);
1526 }
1527
1528 type_init(usb_host_register_types)
1529
1530 /* ------------------------------------------------------------------------ */
1531
1532 static QEMUTimer *usb_auto_timer;
1533 static VMChangeStateEntry *usb_vmstate;
1534
1535 static void usb_host_vm_state(void *unused, int running, RunState state)
1536 {
1537 if (running) {
1538 usb_host_auto_check(unused);
1539 }
1540 }
1541
1542 static void usb_host_auto_check(void *unused)
1543 {
1544 struct USBHostDevice *s;
1545 struct USBAutoFilter *f;
1546 libusb_device **devs = NULL;
1547 struct libusb_device_descriptor ddesc;
1548 int unconnected = 0;
1549 int i, n;
1550
1551 if (usb_host_init() != 0) {
1552 return;
1553 }
1554
1555 if (runstate_is_running()) {
1556 n = libusb_get_device_list(ctx, &devs);
1557 for (i = 0; i < n; i++) {
1558 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1559 continue;
1560 }
1561 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1562 continue;
1563 }
1564 QTAILQ_FOREACH(s, &hostdevs, next) {
1565 f = &s->match;
1566 if (f->bus_num > 0 &&
1567 f->bus_num != libusb_get_bus_number(devs[i])) {
1568 continue;
1569 }
1570 if (f->addr > 0 &&
1571 f->addr != libusb_get_device_address(devs[i])) {
1572 continue;
1573 }
1574 if (f->port != NULL) {
1575 char port[16] = "-";
1576 usb_host_get_port(devs[i], port, sizeof(port));
1577 if (strcmp(f->port, port) != 0) {
1578 continue;
1579 }
1580 }
1581 if (f->vendor_id > 0 &&
1582 f->vendor_id != ddesc.idVendor) {
1583 continue;
1584 }
1585 if (f->product_id > 0 &&
1586 f->product_id != ddesc.idProduct) {
1587 continue;
1588 }
1589
1590 /* We got a match */
1591 s->seen++;
1592 if (s->errcount >= 3) {
1593 continue;
1594 }
1595 if (s->dh != NULL) {
1596 continue;
1597 }
1598 if (usb_host_open(s, devs[i]) < 0) {
1599 s->errcount++;
1600 continue;
1601 }
1602 break;
1603 }
1604 }
1605 libusb_free_device_list(devs, 1);
1606
1607 QTAILQ_FOREACH(s, &hostdevs, next) {
1608 if (s->dh == NULL) {
1609 unconnected++;
1610 }
1611 if (s->seen == 0) {
1612 if (s->dh) {
1613 usb_host_close(s);
1614 }
1615 s->errcount = 0;
1616 }
1617 s->seen = 0;
1618 }
1619
1620 #if 0
1621 if (unconnected == 0) {
1622 /* nothing to watch */
1623 if (usb_auto_timer) {
1624 timer_del(usb_auto_timer);
1625 trace_usb_host_auto_scan_disabled();
1626 }
1627 return;
1628 }
1629 #endif
1630 }
1631
1632 if (!usb_vmstate) {
1633 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1634 }
1635 if (!usb_auto_timer) {
1636 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1637 if (!usb_auto_timer) {
1638 return;
1639 }
1640 trace_usb_host_auto_scan_enabled();
1641 }
1642 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1643 }
1644
1645 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1646 {
1647 libusb_device **devs = NULL;
1648 struct libusb_device_descriptor ddesc;
1649 char port[16];
1650 int i, n;
1651
1652 if (usb_host_init() != 0) {
1653 return;
1654 }
1655
1656 n = libusb_get_device_list(ctx, &devs);
1657 for (i = 0; i < n; i++) {
1658 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1659 continue;
1660 }
1661 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1662 continue;
1663 }
1664 usb_host_get_port(devs[i], port, sizeof(port));
1665 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1666 libusb_get_bus_number(devs[i]),
1667 libusb_get_device_address(devs[i]),
1668 port,
1669 speed_name[libusb_get_device_speed(devs[i])]);
1670 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1671 monitor_printf(mon, " USB device %04x:%04x",
1672 ddesc.idVendor, ddesc.idProduct);
1673 if (ddesc.iProduct) {
1674 libusb_device_handle *handle;
1675 if (libusb_open(devs[i], &handle) == 0) {
1676 unsigned char name[64] = "";
1677 libusb_get_string_descriptor_ascii(handle,
1678 ddesc.iProduct,
1679 name, sizeof(name));
1680 libusb_close(handle);
1681 monitor_printf(mon, ", %s", name);
1682 }
1683 }
1684 monitor_printf(mon, "\n");
1685 }
1686 libusb_free_device_list(devs, 1);
1687 }
QEmu