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sysemu: Split sysemu/runstate.h off sysemu/sysemu.h
[qemu/armbru.git] / hw / usb / host-libusb.c
blob472cc26fc403231b17cdfbf030370366a28e0ffc
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 #ifndef CONFIG_WIN32
38 #include <poll.h>
39 #endif
40 #include <libusb.h>
41
42 #include "qapi/error.h"
43 #include "migration/vmstate.h"
44 #include "monitor/monitor.h"
45 #include "qemu/error-report.h"
46 #include "qemu/main-loop.h"
47 #include "qemu/module.h"
48 #include "sysemu/runstate.h"
49 #include "sysemu/sysemu.h"
50 #include "trace.h"
51
52 #include "hw/qdev-properties.h"
53 #include "hw/usb.h"
54
55 /* ------------------------------------------------------------------------ */
56
57 #define TYPE_USB_HOST_DEVICE "usb-host"
58 #define USB_HOST_DEVICE(obj) \
59 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
60
61 typedef struct USBHostDevice USBHostDevice;
62 typedef struct USBHostRequest USBHostRequest;
63 typedef struct USBHostIsoXfer USBHostIsoXfer;
64 typedef struct USBHostIsoRing USBHostIsoRing;
65
66 struct USBAutoFilter {
67 uint32_t bus_num;
68 uint32_t addr;
69 char *port;
70 uint32_t vendor_id;
71 uint32_t product_id;
72 };
73
74 enum USBHostDeviceOptions {
75 USB_HOST_OPT_PIPELINE,
76 };
77
78 struct USBHostDevice {
79 USBDevice parent_obj;
80
81 /* properties */
82 struct USBAutoFilter match;
83 int32_t bootindex;
84 uint32_t iso_urb_count;
85 uint32_t iso_urb_frames;
86 uint32_t options;
87 uint32_t loglevel;
88 bool needs_autoscan;
89 bool allow_guest_reset;
90 /* state */
91 QTAILQ_ENTRY(USBHostDevice) next;
92 int seen, errcount;
93 int bus_num;
94 int addr;
95 char port[16];
96
97 libusb_device *dev;
98 libusb_device_handle *dh;
99 struct libusb_device_descriptor ddesc;
100
101 struct {
102 bool detached;
103 bool claimed;
104 } ifs[USB_MAX_INTERFACES];
105
106 /* callbacks & friends */
107 QEMUBH *bh_nodev;
108 QEMUBH *bh_postld;
109 bool bh_postld_pending;
110 Notifier exit;
111
112 /* request queues */
113 QTAILQ_HEAD(, USBHostRequest) requests;
114 QTAILQ_HEAD(, USBHostIsoRing) isorings;
115 };
116
117 struct USBHostRequest {
118 USBHostDevice *host;
119 USBPacket *p;
120 bool in;
121 struct libusb_transfer *xfer;
122 unsigned char *buffer;
123 unsigned char *cbuf;
124 unsigned int clen;
125 bool usb3ep0quirk;
126 QTAILQ_ENTRY(USBHostRequest) next;
127 };
128
129 struct USBHostIsoXfer {
130 USBHostIsoRing *ring;
131 struct libusb_transfer *xfer;
132 bool copy_complete;
133 unsigned int packet;
134 QTAILQ_ENTRY(USBHostIsoXfer) next;
135 };
136
137 struct USBHostIsoRing {
138 USBHostDevice *host;
139 USBEndpoint *ep;
140 QTAILQ_HEAD(, USBHostIsoXfer) unused;
141 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
142 QTAILQ_HEAD(, USBHostIsoXfer) copy;
143 QTAILQ_ENTRY(USBHostIsoRing) next;
144 };
145
146 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
147 QTAILQ_HEAD_INITIALIZER(hostdevs);
148
149 static void usb_host_auto_check(void *unused);
150 static void usb_host_release_interfaces(USBHostDevice *s);
151 static void usb_host_nodev(USBHostDevice *s);
152 static void usb_host_detach_kernel(USBHostDevice *s);
153 static void usb_host_attach_kernel(USBHostDevice *s);
154
155 /* ------------------------------------------------------------------------ */
156
157 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
158 #define LIBUSB_LOG_LEVEL_WARNING 2
159 #endif
160
161 /* ------------------------------------------------------------------------ */
162
163 #define CONTROL_TIMEOUT 10000 /* 10 sec */
164 #define BULK_TIMEOUT 0 /* unlimited */
165 #define INTR_TIMEOUT 0 /* unlimited */
166
167 #ifndef LIBUSB_API_VERSION
168 # define LIBUSB_API_VERSION LIBUSBX_API_VERSION
169 #endif
170 #if LIBUSB_API_VERSION >= 0x01000103
171 # define HAVE_STREAMS 1
172 #endif
173
174 static const char *speed_name[] = {
175 [LIBUSB_SPEED_UNKNOWN] = "?",
176 [LIBUSB_SPEED_LOW] = "1.5",
177 [LIBUSB_SPEED_FULL] = "12",
178 [LIBUSB_SPEED_HIGH] = "480",
179 [LIBUSB_SPEED_SUPER] = "5000",
180 };
181
182 static const unsigned int speed_map[] = {
183 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
184 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
185 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
186 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
187 };
188
189 static const unsigned int status_map[] = {
190 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
191 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
192 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
193 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
194 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
195 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
196 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
197 };
198
199 static const char *err_names[] = {
200 [-LIBUSB_ERROR_IO] = "IO",
201 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
202 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
203 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
204 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
205 [-LIBUSB_ERROR_BUSY] = "BUSY",
206 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
207 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
208 [-LIBUSB_ERROR_PIPE] = "PIPE",
209 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
210 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
211 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
212 [-LIBUSB_ERROR_OTHER] = "OTHER",
213 };
214
215 static libusb_context *ctx;
216 static uint32_t loglevel;
217
218 #ifndef CONFIG_WIN32
219
220 static void usb_host_handle_fd(void *opaque)
221 {
222 struct timeval tv = { 0, 0 };
223 libusb_handle_events_timeout(ctx, &tv);
224 }
225
226 static void usb_host_add_fd(int fd, short events, void *user_data)
227 {
228 qemu_set_fd_handler(fd,
229 (events & POLLIN) ? usb_host_handle_fd : NULL,
230 (events & POLLOUT) ? usb_host_handle_fd : NULL,
231 ctx);
232 }
233
234 static void usb_host_del_fd(int fd, void *user_data)
235 {
236 qemu_set_fd_handler(fd, NULL, NULL, NULL);
237 }
238
239 #endif /* !CONFIG_WIN32 */
240
241 static int usb_host_init(void)
242 {
243 #ifndef CONFIG_WIN32
244 const struct libusb_pollfd **poll;
245 #endif
246 int rc;
247
248 if (ctx) {
249 return 0;
250 }
251 rc = libusb_init(&ctx);
252 if (rc != 0) {
253 return -1;
254 }
255 #if LIBUSB_API_VERSION >= 0x01000106
256 libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, loglevel);
257 #else
258 libusb_set_debug(ctx, loglevel);
259 #endif
260 #ifdef CONFIG_WIN32
261 /* FIXME: add support for Windows. */
262 #else
263 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
264 usb_host_del_fd,
265 ctx);
266 poll = libusb_get_pollfds(ctx);
267 if (poll) {
268 int i;
269 for (i = 0; poll[i] != NULL; i++) {
270 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
271 }
272 }
273 free(poll);
274 #endif
275 return 0;
276 }
277
278 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
279 {
280 uint8_t path[7];
281 size_t off;
282 int rc, i;
283
284 #if LIBUSB_API_VERSION >= 0x01000102
285 rc = libusb_get_port_numbers(dev, path, 7);
286 #else
287 rc = libusb_get_port_path(ctx, dev, path, 7);
288 #endif
289 if (rc < 0) {
290 return 0;
291 }
292 off = snprintf(port, len, "%d", path[0]);
293 for (i = 1; i < rc; i++) {
294 off += snprintf(port+off, len-off, ".%d", path[i]);
295 }
296 return off;
297 }
298
299 static void usb_host_libusb_error(const char *func, int rc)
300 {
301 const char *errname;
302
303 if (rc >= 0) {
304 return;
305 }
306
307 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
308 errname = err_names[-rc];
309 } else {
310 errname = "?";
311 }
312 error_report("%s: %d [%s]", func, rc, errname);
313 }
314
315 /* ------------------------------------------------------------------------ */
316
317 static bool usb_host_use_combining(USBEndpoint *ep)
318 {
319 int type;
320
321 if (!ep->pipeline) {
322 return false;
323 }
324 if (ep->pid != USB_TOKEN_IN) {
325 return false;
326 }
327 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
328 if (type != USB_ENDPOINT_XFER_BULK) {
329 return false;
330 }
331 return true;
332 }
333
334 /* ------------------------------------------------------------------------ */
335
336 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
337 bool in, size_t bufsize)
338 {
339 USBHostRequest *r = g_new0(USBHostRequest, 1);
340
341 r->host = s;
342 r->p = p;
343 r->in = in;
344 r->xfer = libusb_alloc_transfer(0);
345 if (bufsize) {
346 r->buffer = g_malloc(bufsize);
347 }
348 QTAILQ_INSERT_TAIL(&s->requests, r, next);
349 return r;
350 }
351
352 static void usb_host_req_free(USBHostRequest *r)
353 {
354 if (r->host) {
355 QTAILQ_REMOVE(&r->host->requests, r, next);
356 }
357 libusb_free_transfer(r->xfer);
358 g_free(r->buffer);
359 g_free(r);
360 }
361
362 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
363 {
364 USBHostRequest *r;
365
366 QTAILQ_FOREACH(r, &s->requests, next) {
367 if (r->p == p) {
368 return r;
369 }
370 }
371 return NULL;
372 }
373
374 static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
375 {
376 USBHostRequest *r = xfer->user_data;
377 USBHostDevice *s = r->host;
378 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
379
380 if (r->p == NULL) {
381 goto out; /* request was canceled */
382 }
383
384 r->p->status = status_map[xfer->status];
385 r->p->actual_length = xfer->actual_length;
386 if (r->in && xfer->actual_length) {
387 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
388
389 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
390 * to work redirected to a not superspeed capable hcd */
391 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
392 r->cbuf[7] == 9) {
393 r->cbuf[7] = 64;
394 }
395 }
396 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
397 r->p->status, r->p->actual_length);
398 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
399
400 out:
401 usb_host_req_free(r);
402 if (disconnect) {
403 usb_host_nodev(s);
404 }
405 }
406
407 static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
408 {
409 USBHostRequest *r = xfer->user_data;
410 USBHostDevice *s = r->host;
411 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
412
413 if (r->p == NULL) {
414 goto out; /* request was canceled */
415 }
416
417 r->p->status = status_map[xfer->status];
418 if (r->in && xfer->actual_length) {
419 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
420 }
421 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
422 r->p->status, r->p->actual_length);
423 if (usb_host_use_combining(r->p->ep)) {
424 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
425 } else {
426 usb_packet_complete(USB_DEVICE(s), r->p);
427 }
428
429 out:
430 usb_host_req_free(r);
431 if (disconnect) {
432 usb_host_nodev(s);
433 }
434 }
435
436 static void usb_host_req_abort(USBHostRequest *r)
437 {
438 USBHostDevice *s = r->host;
439 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
440
441 if (inflight) {
442 r->p->status = USB_RET_NODEV;
443 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
444 r->p->status, r->p->actual_length);
445 if (r->p->ep->nr == 0) {
446 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
447 } else {
448 usb_packet_complete(USB_DEVICE(s), r->p);
449 }
450 r->p = NULL;
451 }
452
453 QTAILQ_REMOVE(&r->host->requests, r, next);
454 r->host = NULL;
455
456 if (inflight) {
457 libusb_cancel_transfer(r->xfer);
458 }
459 }
460
461 /* ------------------------------------------------------------------------ */
462
463 static void LIBUSB_CALL
464 usb_host_req_complete_iso(struct libusb_transfer *transfer)
465 {
466 USBHostIsoXfer *xfer = transfer->user_data;
467
468 if (!xfer) {
469 /* USBHostIsoXfer released while inflight */
470 g_free(transfer->buffer);
471 libusb_free_transfer(transfer);
472 return;
473 }
474
475 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
476 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
477 USBHostDevice *s = xfer->ring->host;
478 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
479 }
480 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
481 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
482 usb_wakeup(xfer->ring->ep, 0);
483 } else {
484 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
485 }
486 }
487
488 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
489 {
490 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
491 USBHostIsoXfer *xfer;
492 /* FIXME: check interval (for now assume one xfer per frame) */
493 int packets = s->iso_urb_frames;
494 int i;
495
496 ring->host = s;
497 ring->ep = ep;
498 QTAILQ_INIT(&ring->unused);
499 QTAILQ_INIT(&ring->inflight);
500 QTAILQ_INIT(&ring->copy);
501 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
502
503 for (i = 0; i < s->iso_urb_count; i++) {
504 xfer = g_new0(USBHostIsoXfer, 1);
505 xfer->ring = ring;
506 xfer->xfer = libusb_alloc_transfer(packets);
507 xfer->xfer->dev_handle = s->dh;
508 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
509
510 xfer->xfer->endpoint = ring->ep->nr;
511 if (ring->ep->pid == USB_TOKEN_IN) {
512 xfer->xfer->endpoint |= USB_DIR_IN;
513 }
514 xfer->xfer->callback = usb_host_req_complete_iso;
515 xfer->xfer->user_data = xfer;
516
517 xfer->xfer->num_iso_packets = packets;
518 xfer->xfer->length = ring->ep->max_packet_size * packets;
519 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
520
521 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
522 }
523
524 return ring;
525 }
526
527 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
528 {
529 USBHostIsoRing *ring;
530
531 QTAILQ_FOREACH(ring, &s->isorings, next) {
532 if (ring->ep == ep) {
533 return ring;
534 }
535 }
536 return NULL;
537 }
538
539 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
540 {
541 libusb_set_iso_packet_lengths(xfer->xfer,
542 xfer->ring->ep->max_packet_size);
543 xfer->packet = 0;
544 xfer->copy_complete = false;
545 }
546
547 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
548 {
549 if (inflight) {
550 xfer->xfer->user_data = NULL;
551 } else {
552 g_free(xfer->xfer->buffer);
553 libusb_free_transfer(xfer->xfer);
554 }
555 g_free(xfer);
556 }
557
558 static void usb_host_iso_free(USBHostIsoRing *ring)
559 {
560 USBHostIsoXfer *xfer;
561
562 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
563 QTAILQ_REMOVE(&ring->inflight, xfer, next);
564 usb_host_iso_free_xfer(xfer, true);
565 }
566 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
567 QTAILQ_REMOVE(&ring->unused, xfer, next);
568 usb_host_iso_free_xfer(xfer, false);
569 }
570 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
571 QTAILQ_REMOVE(&ring->copy, xfer, next);
572 usb_host_iso_free_xfer(xfer, false);
573 }
574
575 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
576 g_free(ring);
577 }
578
579 static void usb_host_iso_free_all(USBHostDevice *s)
580 {
581 USBHostIsoRing *ring;
582
583 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
584 usb_host_iso_free(ring);
585 }
586 }
587
588 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
589 {
590 unsigned int psize;
591 unsigned char *buf;
592
593 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
594 if (p->pid == USB_TOKEN_OUT) {
595 psize = p->iov.size;
596 if (psize > xfer->ring->ep->max_packet_size) {
597 /* should not happen (guest bug) */
598 psize = xfer->ring->ep->max_packet_size;
599 }
600 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
601 } else {
602 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
603 if (psize > p->iov.size) {
604 /* should not happen (guest bug) */
605 psize = p->iov.size;
606 }
607 }
608 usb_packet_copy(p, buf, psize);
609 xfer->packet++;
610 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
611 return xfer->copy_complete;
612 }
613
614 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
615 {
616 USBHostIsoRing *ring;
617 USBHostIsoXfer *xfer;
618 bool disconnect = false;
619 int rc;
620
621 ring = usb_host_iso_find(s, p->ep);
622 if (ring == NULL) {
623 ring = usb_host_iso_alloc(s, p->ep);
624 }
625
626 /* copy data to guest */
627 xfer = QTAILQ_FIRST(&ring->copy);
628 if (xfer != NULL) {
629 if (usb_host_iso_data_copy(xfer, p)) {
630 QTAILQ_REMOVE(&ring->copy, xfer, next);
631 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
632 }
633 }
634
635 /* submit empty bufs to host */
636 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
637 QTAILQ_REMOVE(&ring->unused, xfer, next);
638 usb_host_iso_reset_xfer(xfer);
639 rc = libusb_submit_transfer(xfer->xfer);
640 if (rc != 0) {
641 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
642 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
643 if (rc == LIBUSB_ERROR_NO_DEVICE) {
644 disconnect = true;
645 }
646 break;
647 }
648 if (QTAILQ_EMPTY(&ring->inflight)) {
649 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
650 }
651 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
652 }
653
654 if (disconnect) {
655 usb_host_nodev(s);
656 }
657 }
658
659 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
660 {
661 USBHostIsoRing *ring;
662 USBHostIsoXfer *xfer;
663 bool disconnect = false;
664 int rc, filled = 0;
665
666 ring = usb_host_iso_find(s, p->ep);
667 if (ring == NULL) {
668 ring = usb_host_iso_alloc(s, p->ep);
669 }
670
671 /* copy data from guest */
672 xfer = QTAILQ_FIRST(&ring->copy);
673 while (xfer != NULL && xfer->copy_complete) {
674 filled++;
675 xfer = QTAILQ_NEXT(xfer, next);
676 }
677 if (xfer == NULL) {
678 xfer = QTAILQ_FIRST(&ring->unused);
679 if (xfer == NULL) {
680 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
681 return;
682 }
683 QTAILQ_REMOVE(&ring->unused, xfer, next);
684 usb_host_iso_reset_xfer(xfer);
685 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
686 }
687 usb_host_iso_data_copy(xfer, p);
688
689 if (QTAILQ_EMPTY(&ring->inflight)) {
690 /* wait until half of our buffers are filled
691 before kicking the iso out stream */
692 if (filled*2 < s->iso_urb_count) {
693 return;
694 }
695 }
696
697 /* submit filled bufs to host */
698 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
699 xfer->copy_complete) {
700 QTAILQ_REMOVE(&ring->copy, xfer, next);
701 rc = libusb_submit_transfer(xfer->xfer);
702 if (rc != 0) {
703 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
704 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
705 if (rc == LIBUSB_ERROR_NO_DEVICE) {
706 disconnect = true;
707 }
708 break;
709 }
710 if (QTAILQ_EMPTY(&ring->inflight)) {
711 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
712 }
713 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
714 }
715
716 if (disconnect) {
717 usb_host_nodev(s);
718 }
719 }
720
721 /* ------------------------------------------------------------------------ */
722
723 static void usb_host_speed_compat(USBHostDevice *s)
724 {
725 USBDevice *udev = USB_DEVICE(s);
726 struct libusb_config_descriptor *conf;
727 const struct libusb_interface_descriptor *intf;
728 const struct libusb_endpoint_descriptor *endp;
729 #ifdef HAVE_STREAMS
730 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
731 #endif
732 bool compat_high = true;
733 bool compat_full = true;
734 uint8_t type;
735 int rc, c, i, a, e;
736
737 for (c = 0;; c++) {
738 rc = libusb_get_config_descriptor(s->dev, c, &conf);
739 if (rc != 0) {
740 break;
741 }
742 for (i = 0; i < conf->bNumInterfaces; i++) {
743 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
744 intf = &conf->interface[i].altsetting[a];
745 for (e = 0; e < intf->bNumEndpoints; e++) {
746 endp = &intf->endpoint[e];
747 type = endp->bmAttributes & 0x3;
748 switch (type) {
749 case 0x01: /* ISO */
750 compat_full = false;
751 compat_high = false;
752 break;
753 case 0x02: /* BULK */
754 #ifdef HAVE_STREAMS
755 rc = libusb_get_ss_endpoint_companion_descriptor
756 (ctx, endp, &endp_ss_comp);
757 if (rc == LIBUSB_SUCCESS) {
758 int streams = endp_ss_comp->bmAttributes & 0x1f;
759 if (streams) {
760 compat_full = false;
761 compat_high = false;
762 }
763 libusb_free_ss_endpoint_companion_descriptor
764 (endp_ss_comp);
765 }
766 #endif
767 break;
768 case 0x03: /* INTERRUPT */
769 if (endp->wMaxPacketSize > 64) {
770 compat_full = false;
771 }
772 if (endp->wMaxPacketSize > 1024) {
773 compat_high = false;
774 }
775 break;
776 }
777 }
778 }
779 }
780 libusb_free_config_descriptor(conf);
781 }
782
783 udev->speedmask = (1 << udev->speed);
784 if (udev->speed == USB_SPEED_SUPER && compat_high) {
785 udev->speedmask |= USB_SPEED_MASK_HIGH;
786 }
787 if (udev->speed == USB_SPEED_SUPER && compat_full) {
788 udev->speedmask |= USB_SPEED_MASK_FULL;
789 }
790 if (udev->speed == USB_SPEED_HIGH && compat_full) {
791 udev->speedmask |= USB_SPEED_MASK_FULL;
792 }
793 }
794
795 static void usb_host_ep_update(USBHostDevice *s)
796 {
797 static const char *tname[] = {
798 [USB_ENDPOINT_XFER_CONTROL] = "control",
799 [USB_ENDPOINT_XFER_ISOC] = "isoc",
800 [USB_ENDPOINT_XFER_BULK] = "bulk",
801 [USB_ENDPOINT_XFER_INT] = "int",
802 };
803 USBDevice *udev = USB_DEVICE(s);
804 struct libusb_config_descriptor *conf;
805 const struct libusb_interface_descriptor *intf;
806 const struct libusb_endpoint_descriptor *endp;
807 #ifdef HAVE_STREAMS
808 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
809 #endif
810 uint8_t devep, type;
811 int pid, ep;
812 int rc, i, e;
813
814 usb_ep_reset(udev);
815 rc = libusb_get_active_config_descriptor(s->dev, &conf);
816 if (rc != 0) {
817 return;
818 }
819 trace_usb_host_parse_config(s->bus_num, s->addr,
820 conf->bConfigurationValue, true);
821
822 for (i = 0; i < conf->bNumInterfaces; i++) {
823 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
824 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
825 trace_usb_host_parse_interface(s->bus_num, s->addr,
826 intf->bInterfaceNumber,
827 intf->bAlternateSetting, true);
828 for (e = 0; e < intf->bNumEndpoints; e++) {
829 endp = &intf->endpoint[e];
830
831 devep = endp->bEndpointAddress;
832 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
833 ep = devep & 0xf;
834 type = endp->bmAttributes & 0x3;
835
836 if (ep == 0) {
837 trace_usb_host_parse_error(s->bus_num, s->addr,
838 "invalid endpoint address");
839 return;
840 }
841 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
842 trace_usb_host_parse_error(s->bus_num, s->addr,
843 "duplicate endpoint address");
844 return;
845 }
846
847 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
848 (devep & USB_DIR_IN) ? "in" : "out",
849 tname[type], true);
850 usb_ep_set_max_packet_size(udev, pid, ep,
851 endp->wMaxPacketSize);
852 usb_ep_set_type(udev, pid, ep, type);
853 usb_ep_set_ifnum(udev, pid, ep, i);
854 usb_ep_set_halted(udev, pid, ep, 0);
855 #ifdef HAVE_STREAMS
856 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
857 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
858 &endp_ss_comp) == LIBUSB_SUCCESS) {
859 usb_ep_set_max_streams(udev, pid, ep,
860 endp_ss_comp->bmAttributes);
861 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
862 }
863 #endif
864 }
865 }
866
867 libusb_free_config_descriptor(conf);
868 }
869
870 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
871 {
872 USBDevice *udev = USB_DEVICE(s);
873 int bus_num = libusb_get_bus_number(dev);
874 int addr = libusb_get_device_address(dev);
875 int rc;
876 Error *local_err = NULL;
877
878 if (s->bh_postld_pending) {
879 return -1;
880 }
881
882 trace_usb_host_open_started(bus_num, addr);
883
884 if (s->dh != NULL) {
885 goto fail;
886 }
887 rc = libusb_open(dev, &s->dh);
888 if (rc != 0) {
889 goto fail;
890 }
891
892 s->dev = dev;
893 s->bus_num = bus_num;
894 s->addr = addr;
895
896 usb_host_detach_kernel(s);
897
898 libusb_get_device_descriptor(dev, &s->ddesc);
899 usb_host_get_port(s->dev, s->port, sizeof(s->port));
900
901 usb_ep_init(udev);
902 usb_host_ep_update(s);
903
904 udev->speed = speed_map[libusb_get_device_speed(dev)];
905 usb_host_speed_compat(s);
906
907 if (s->ddesc.iProduct) {
908 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
909 (unsigned char *)udev->product_desc,
910 sizeof(udev->product_desc));
911 } else {
912 snprintf(udev->product_desc, sizeof(udev->product_desc),
913 "host:%d.%d", bus_num, addr);
914 }
915
916 usb_device_attach(udev, &local_err);
917 if (local_err) {
918 error_report_err(local_err);
919 goto fail;
920 }
921
922 trace_usb_host_open_success(bus_num, addr);
923 return 0;
924
925 fail:
926 trace_usb_host_open_failure(bus_num, addr);
927 if (s->dh != NULL) {
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 return -1;
936 }
937
938 static void usb_host_abort_xfers(USBHostDevice *s)
939 {
940 USBHostRequest *r, *rtmp;
941
942 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
943 usb_host_req_abort(r);
944 }
945 }
946
947 static int usb_host_close(USBHostDevice *s)
948 {
949 USBDevice *udev = USB_DEVICE(s);
950
951 if (s->dh == NULL) {
952 return -1;
953 }
954
955 trace_usb_host_close(s->bus_num, s->addr);
956
957 usb_host_abort_xfers(s);
958 usb_host_iso_free_all(s);
959
960 if (udev->attached) {
961 usb_device_detach(udev);
962 }
963
964 usb_host_release_interfaces(s);
965 libusb_reset_device(s->dh);
966 usb_host_attach_kernel(s);
967 libusb_close(s->dh);
968 s->dh = NULL;
969 s->dev = NULL;
970
971 usb_host_auto_check(NULL);
972 return 0;
973 }
974
975 static void usb_host_nodev_bh(void *opaque)
976 {
977 USBHostDevice *s = opaque;
978 usb_host_close(s);
979 }
980
981 static void usb_host_nodev(USBHostDevice *s)
982 {
983 if (!s->bh_nodev) {
984 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
985 }
986 qemu_bh_schedule(s->bh_nodev);
987 }
988
989 static void usb_host_exit_notifier(struct Notifier *n, void *data)
990 {
991 USBHostDevice *s = container_of(n, USBHostDevice, exit);
992
993 if (s->dh) {
994 usb_host_release_interfaces(s);
995 libusb_reset_device(s->dh);
996 usb_host_attach_kernel(s);
997 libusb_close(s->dh);
998 }
999 }
1000
1001 static libusb_device *usb_host_find_ref(int bus, int addr)
1002 {
1003 libusb_device **devs = NULL;
1004 libusb_device *ret = NULL;
1005 int i, n;
1006
1007 if (usb_host_init() != 0) {
1008 return NULL;
1009 }
1010 n = libusb_get_device_list(ctx, &devs);
1011 for (i = 0; i < n; i++) {
1012 if (libusb_get_bus_number(devs[i]) == bus &&
1013 libusb_get_device_address(devs[i]) == addr) {
1014 ret = libusb_ref_device(devs[i]);
1015 break;
1016 }
1017 }
1018 libusb_free_device_list(devs, 1);
1019 return ret;
1020 }
1021
1022 static void usb_host_realize(USBDevice *udev, Error **errp)
1023 {
1024 USBHostDevice *s = USB_HOST_DEVICE(udev);
1025 libusb_device *ldev;
1026 int rc;
1027
1028 if (s->match.vendor_id > 0xffff) {
1029 error_setg(errp, "vendorid out of range");
1030 return;
1031 }
1032 if (s->match.product_id > 0xffff) {
1033 error_setg(errp, "productid out of range");
1034 return;
1035 }
1036 if (s->match.addr > 127) {
1037 error_setg(errp, "hostaddr out of range");
1038 return;
1039 }
1040
1041 loglevel = s->loglevel;
1042 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
1043 udev->auto_attach = 0;
1044 QTAILQ_INIT(&s->requests);
1045 QTAILQ_INIT(&s->isorings);
1046
1047 if (s->match.addr && s->match.bus_num &&
1048 !s->match.vendor_id &&
1049 !s->match.product_id &&
1050 !s->match.port) {
1051 s->needs_autoscan = false;
1052 ldev = usb_host_find_ref(s->match.bus_num,
1053 s->match.addr);
1054 if (!ldev) {
1055 error_setg(errp, "failed to find host usb device %d:%d",
1056 s->match.bus_num, s->match.addr);
1057 return;
1058 }
1059 rc = usb_host_open(s, ldev);
1060 libusb_unref_device(ldev);
1061 if (rc < 0) {
1062 error_setg(errp, "failed to open host usb device %d:%d",
1063 s->match.bus_num, s->match.addr);
1064 return;
1065 }
1066 } else {
1067 s->needs_autoscan = true;
1068 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1069 usb_host_auto_check(NULL);
1070 }
1071
1072 s->exit.notify = usb_host_exit_notifier;
1073 qemu_add_exit_notifier(&s->exit);
1074 }
1075
1076 static void usb_host_instance_init(Object *obj)
1077 {
1078 USBDevice *udev = USB_DEVICE(obj);
1079 USBHostDevice *s = USB_HOST_DEVICE(udev);
1080
1081 device_add_bootindex_property(obj, &s->bootindex,
1082 "bootindex", NULL,
1083 &udev->qdev, NULL);
1084 }
1085
1086 static void usb_host_unrealize(USBDevice *udev, Error **errp)
1087 {
1088 USBHostDevice *s = USB_HOST_DEVICE(udev);
1089
1090 qemu_remove_exit_notifier(&s->exit);
1091 if (s->needs_autoscan) {
1092 QTAILQ_REMOVE(&hostdevs, s, next);
1093 }
1094 usb_host_close(s);
1095 }
1096
1097 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1098 {
1099 USBHostDevice *s = USB_HOST_DEVICE(udev);
1100 USBHostRequest *r;
1101
1102 if (p->combined) {
1103 usb_combined_packet_cancel(udev, p);
1104 return;
1105 }
1106
1107 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1108
1109 r = usb_host_req_find(s, p);
1110 if (r && r->p) {
1111 r->p = NULL; /* mark as dead */
1112 libusb_cancel_transfer(r->xfer);
1113 }
1114 }
1115
1116 static void usb_host_detach_kernel(USBHostDevice *s)
1117 {
1118 struct libusb_config_descriptor *conf;
1119 int rc, i;
1120
1121 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1122 if (rc != 0) {
1123 return;
1124 }
1125 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1126 rc = libusb_kernel_driver_active(s->dh, i);
1127 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1128 if (rc != 1) {
1129 if (rc == 0) {
1130 s->ifs[i].detached = true;
1131 }
1132 continue;
1133 }
1134 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1135 rc = libusb_detach_kernel_driver(s->dh, i);
1136 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1137 s->ifs[i].detached = true;
1138 }
1139 libusb_free_config_descriptor(conf);
1140 }
1141
1142 static void usb_host_attach_kernel(USBHostDevice *s)
1143 {
1144 struct libusb_config_descriptor *conf;
1145 int rc, i;
1146
1147 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1148 if (rc != 0) {
1149 return;
1150 }
1151 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1152 if (!s->ifs[i].detached) {
1153 continue;
1154 }
1155 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1156 libusb_attach_kernel_driver(s->dh, i);
1157 s->ifs[i].detached = false;
1158 }
1159 libusb_free_config_descriptor(conf);
1160 }
1161
1162 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1163 {
1164 USBDevice *udev = USB_DEVICE(s);
1165 struct libusb_config_descriptor *conf;
1166 int rc, i, claimed;
1167
1168 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1169 udev->altsetting[i] = 0;
1170 }
1171 udev->ninterfaces = 0;
1172 udev->configuration = 0;
1173
1174 usb_host_detach_kernel(s);
1175
1176 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1177 if (rc != 0) {
1178 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1179 /* address state - ignore */
1180 return USB_RET_SUCCESS;
1181 }
1182 return USB_RET_STALL;
1183 }
1184
1185 claimed = 0;
1186 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1187 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1188 rc = libusb_claim_interface(s->dh, i);
1189 if (rc == 0) {
1190 s->ifs[i].claimed = true;
1191 if (++claimed == conf->bNumInterfaces) {
1192 break;
1193 }
1194 }
1195 }
1196 if (claimed != conf->bNumInterfaces) {
1197 return USB_RET_STALL;
1198 }
1199
1200 udev->ninterfaces = conf->bNumInterfaces;
1201 udev->configuration = configuration;
1202
1203 libusb_free_config_descriptor(conf);
1204 return USB_RET_SUCCESS;
1205 }
1206
1207 static void usb_host_release_interfaces(USBHostDevice *s)
1208 {
1209 int i, rc;
1210
1211 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1212 if (!s->ifs[i].claimed) {
1213 continue;
1214 }
1215 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1216 rc = libusb_release_interface(s->dh, i);
1217 usb_host_libusb_error("libusb_release_interface", rc);
1218 s->ifs[i].claimed = false;
1219 }
1220 }
1221
1222 static void usb_host_set_address(USBHostDevice *s, int addr)
1223 {
1224 USBDevice *udev = USB_DEVICE(s);
1225
1226 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1227 udev->addr = addr;
1228 }
1229
1230 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1231 {
1232 int rc = 0;
1233
1234 trace_usb_host_set_config(s->bus_num, s->addr, config);
1235
1236 usb_host_release_interfaces(s);
1237 if (s->ddesc.bNumConfigurations != 1) {
1238 rc = libusb_set_configuration(s->dh, config);
1239 if (rc != 0) {
1240 usb_host_libusb_error("libusb_set_configuration", rc);
1241 p->status = USB_RET_STALL;
1242 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1243 usb_host_nodev(s);
1244 }
1245 return;
1246 }
1247 }
1248 p->status = usb_host_claim_interfaces(s, config);
1249 if (p->status != USB_RET_SUCCESS) {
1250 return;
1251 }
1252 usb_host_ep_update(s);
1253 }
1254
1255 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1256 USBPacket *p)
1257 {
1258 USBDevice *udev = USB_DEVICE(s);
1259 int rc;
1260
1261 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1262
1263 usb_host_iso_free_all(s);
1264
1265 if (iface >= USB_MAX_INTERFACES) {
1266 p->status = USB_RET_STALL;
1267 return;
1268 }
1269
1270 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1271 if (rc != 0) {
1272 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1273 p->status = USB_RET_STALL;
1274 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1275 usb_host_nodev(s);
1276 }
1277 return;
1278 }
1279
1280 udev->altsetting[iface] = alt;
1281 usb_host_ep_update(s);
1282 }
1283
1284 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1285 int request, int value, int index,
1286 int length, uint8_t *data)
1287 {
1288 USBHostDevice *s = USB_HOST_DEVICE(udev);
1289 USBHostRequest *r;
1290 int rc;
1291
1292 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1293
1294 if (s->dh == NULL) {
1295 p->status = USB_RET_NODEV;
1296 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1297 return;
1298 }
1299
1300 switch (request) {
1301 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1302 usb_host_set_address(s, value);
1303 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1304 return;
1305
1306 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1307 usb_host_set_config(s, value & 0xff, p);
1308 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1309 return;
1310
1311 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1312 usb_host_set_interface(s, index, value, p);
1313 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1314 return;
1315
1316 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1317 if (value == 0) { /* clear halt */
1318 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1319 libusb_clear_halt(s->dh, index);
1320 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1321 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1322 return;
1323 }
1324 }
1325
1326 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1327 r->cbuf = data;
1328 r->clen = length;
1329 memcpy(r->buffer, udev->setup_buf, 8);
1330 if (!r->in) {
1331 memcpy(r->buffer + 8, r->cbuf, r->clen);
1332 }
1333
1334 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1335 * to work redirected to a not superspeed capable hcd */
1336 if ((udev->speedmask & USB_SPEED_MASK_SUPER) &&
1337 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1338 request == 0x8006 && value == 0x100 && index == 0) {
1339 r->usb3ep0quirk = true;
1340 }
1341
1342 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1343 usb_host_req_complete_ctrl, r,
1344 CONTROL_TIMEOUT);
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_handle_data(USBDevice *udev, USBPacket *p)
1360 {
1361 USBHostDevice *s = USB_HOST_DEVICE(udev);
1362 USBHostRequest *r;
1363 size_t size;
1364 int ep, rc;
1365
1366 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1367 p->status = USB_RET_ADD_TO_QUEUE;
1368 return;
1369 }
1370
1371 trace_usb_host_req_data(s->bus_num, s->addr, p,
1372 p->pid == USB_TOKEN_IN,
1373 p->ep->nr, p->iov.size);
1374
1375 if (s->dh == NULL) {
1376 p->status = USB_RET_NODEV;
1377 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1378 return;
1379 }
1380 if (p->ep->halted) {
1381 p->status = USB_RET_STALL;
1382 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1383 return;
1384 }
1385
1386 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1387 case USB_ENDPOINT_XFER_BULK:
1388 size = usb_packet_size(p);
1389 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1390 if (!r->in) {
1391 usb_packet_copy(p, r->buffer, size);
1392 }
1393 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1394 if (p->stream) {
1395 #ifdef HAVE_STREAMS
1396 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1397 r->buffer, size,
1398 usb_host_req_complete_data, r,
1399 BULK_TIMEOUT);
1400 #else
1401 usb_host_req_free(r);
1402 p->status = USB_RET_STALL;
1403 return;
1404 #endif
1405 } else {
1406 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1407 r->buffer, size,
1408 usb_host_req_complete_data, r,
1409 BULK_TIMEOUT);
1410 }
1411 break;
1412 case USB_ENDPOINT_XFER_INT:
1413 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1414 if (!r->in) {
1415 usb_packet_copy(p, r->buffer, p->iov.size);
1416 }
1417 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1418 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1419 r->buffer, p->iov.size,
1420 usb_host_req_complete_data, r,
1421 INTR_TIMEOUT);
1422 break;
1423 case USB_ENDPOINT_XFER_ISOC:
1424 if (p->pid == USB_TOKEN_IN) {
1425 usb_host_iso_data_in(s, p);
1426 } else {
1427 usb_host_iso_data_out(s, p);
1428 }
1429 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1430 p->status, p->actual_length);
1431 return;
1432 default:
1433 p->status = USB_RET_STALL;
1434 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1435 p->status, p->actual_length);
1436 return;
1437 }
1438
1439 rc = libusb_submit_transfer(r->xfer);
1440 if (rc != 0) {
1441 p->status = USB_RET_NODEV;
1442 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1443 p->status, p->actual_length);
1444 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1445 usb_host_nodev(s);
1446 }
1447 return;
1448 }
1449
1450 p->status = USB_RET_ASYNC;
1451 }
1452
1453 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1454 {
1455 if (usb_host_use_combining(ep)) {
1456 usb_ep_combine_input_packets(ep);
1457 }
1458 }
1459
1460 static void usb_host_handle_reset(USBDevice *udev)
1461 {
1462 USBHostDevice *s = USB_HOST_DEVICE(udev);
1463 int rc;
1464
1465 if (!s->allow_guest_reset) {
1466 return;
1467 }
1468 if (udev->addr == 0) {
1469 return;
1470 }
1471
1472 trace_usb_host_reset(s->bus_num, s->addr);
1473
1474 rc = libusb_reset_device(s->dh);
1475 if (rc != 0) {
1476 usb_host_nodev(s);
1477 }
1478 }
1479
1480 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1481 int nr_eps, int streams)
1482 {
1483 #ifdef HAVE_STREAMS
1484 USBHostDevice *s = USB_HOST_DEVICE(udev);
1485 unsigned char endpoints[30];
1486 int i, rc;
1487
1488 for (i = 0; i < nr_eps; i++) {
1489 endpoints[i] = eps[i]->nr;
1490 if (eps[i]->pid == USB_TOKEN_IN) {
1491 endpoints[i] |= 0x80;
1492 }
1493 }
1494 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1495 if (rc < 0) {
1496 usb_host_libusb_error("libusb_alloc_streams", rc);
1497 } else if (rc != streams) {
1498 error_report("libusb_alloc_streams: got less streams "
1499 "then requested %d < %d", rc, streams);
1500 }
1501
1502 return (rc == streams) ? 0 : -1;
1503 #else
1504 error_report("libusb_alloc_streams: error not implemented");
1505 return -1;
1506 #endif
1507 }
1508
1509 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1510 int nr_eps)
1511 {
1512 #ifdef HAVE_STREAMS
1513 USBHostDevice *s = USB_HOST_DEVICE(udev);
1514 unsigned char endpoints[30];
1515 int i;
1516
1517 for (i = 0; i < nr_eps; i++) {
1518 endpoints[i] = eps[i]->nr;
1519 if (eps[i]->pid == USB_TOKEN_IN) {
1520 endpoints[i] |= 0x80;
1521 }
1522 }
1523 libusb_free_streams(s->dh, endpoints, nr_eps);
1524 #endif
1525 }
1526
1527 /*
1528 * This is *NOT* about restoring state. We have absolutely no idea
1529 * what state the host device is in at the moment and whenever it is
1530 * still present in the first place. Attemping to contine where we
1531 * left off is impossible.
1532 *
1533 * What we are going to do here is emulate a surprise removal of
1534 * the usb device passed through, then kick host scan so the device
1535 * will get re-attached (and re-initialized by the guest) in case it
1536 * is still present.
1537 *
1538 * As the device removal will change the state of other devices (usb
1539 * host controller, most likely interrupt controller too) we have to
1540 * wait with it until *all* vmstate is loaded. Thus post_load just
1541 * kicks a bottom half which then does the actual work.
1542 */
1543 static void usb_host_post_load_bh(void *opaque)
1544 {
1545 USBHostDevice *dev = opaque;
1546 USBDevice *udev = USB_DEVICE(dev);
1547
1548 if (dev->dh != NULL) {
1549 usb_host_close(dev);
1550 }
1551 if (udev->attached) {
1552 usb_device_detach(udev);
1553 }
1554 dev->bh_postld_pending = false;
1555 usb_host_auto_check(NULL);
1556 }
1557
1558 static int usb_host_post_load(void *opaque, int version_id)
1559 {
1560 USBHostDevice *dev = opaque;
1561
1562 if (!dev->bh_postld) {
1563 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1564 }
1565 qemu_bh_schedule(dev->bh_postld);
1566 dev->bh_postld_pending = true;
1567 return 0;
1568 }
1569
1570 static const VMStateDescription vmstate_usb_host = {
1571 .name = "usb-host",
1572 .version_id = 1,
1573 .minimum_version_id = 1,
1574 .post_load = usb_host_post_load,
1575 .fields = (VMStateField[]) {
1576 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1577 VMSTATE_END_OF_LIST()
1578 }
1579 };
1580
1581 static Property usb_host_dev_properties[] = {
1582 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1583 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1584 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1585 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1586 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1587 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1588 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1589 DEFINE_PROP_BOOL("guest-reset", USBHostDevice, allow_guest_reset, true),
1590 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1591 LIBUSB_LOG_LEVEL_WARNING),
1592 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1593 USB_HOST_OPT_PIPELINE, true),
1594 DEFINE_PROP_END_OF_LIST(),
1595 };
1596
1597 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1598 {
1599 DeviceClass *dc = DEVICE_CLASS(klass);
1600 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1601
1602 uc->realize = usb_host_realize;
1603 uc->product_desc = "USB Host Device";
1604 uc->cancel_packet = usb_host_cancel_packet;
1605 uc->handle_data = usb_host_handle_data;
1606 uc->handle_control = usb_host_handle_control;
1607 uc->handle_reset = usb_host_handle_reset;
1608 uc->unrealize = usb_host_unrealize;
1609 uc->flush_ep_queue = usb_host_flush_ep_queue;
1610 uc->alloc_streams = usb_host_alloc_streams;
1611 uc->free_streams = usb_host_free_streams;
1612 dc->vmsd = &vmstate_usb_host;
1613 dc->props = usb_host_dev_properties;
1614 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1615 }
1616
1617 static TypeInfo usb_host_dev_info = {
1618 .name = TYPE_USB_HOST_DEVICE,
1619 .parent = TYPE_USB_DEVICE,
1620 .instance_size = sizeof(USBHostDevice),
1621 .class_init = usb_host_class_initfn,
1622 .instance_init = usb_host_instance_init,
1623 };
1624
1625 static void usb_host_register_types(void)
1626 {
1627 type_register_static(&usb_host_dev_info);
1628 }
1629
1630 type_init(usb_host_register_types)
1631
1632 /* ------------------------------------------------------------------------ */
1633
1634 static QEMUTimer *usb_auto_timer;
1635 static VMChangeStateEntry *usb_vmstate;
1636
1637 static void usb_host_vm_state(void *unused, int running, RunState state)
1638 {
1639 if (running) {
1640 usb_host_auto_check(unused);
1641 }
1642 }
1643
1644 static void usb_host_auto_check(void *unused)
1645 {
1646 struct USBHostDevice *s;
1647 struct USBAutoFilter *f;
1648 libusb_device **devs = NULL;
1649 struct libusb_device_descriptor ddesc;
1650 int unconnected = 0;
1651 int i, n;
1652
1653 if (usb_host_init() != 0) {
1654 return;
1655 }
1656
1657 if (runstate_is_running()) {
1658 n = libusb_get_device_list(ctx, &devs);
1659 for (i = 0; i < n; i++) {
1660 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1661 continue;
1662 }
1663 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1664 continue;
1665 }
1666 QTAILQ_FOREACH(s, &hostdevs, next) {
1667 f = &s->match;
1668 if (f->bus_num > 0 &&
1669 f->bus_num != libusb_get_bus_number(devs[i])) {
1670 continue;
1671 }
1672 if (f->addr > 0 &&
1673 f->addr != libusb_get_device_address(devs[i])) {
1674 continue;
1675 }
1676 if (f->port != NULL) {
1677 char port[16] = "-";
1678 usb_host_get_port(devs[i], port, sizeof(port));
1679 if (strcmp(f->port, port) != 0) {
1680 continue;
1681 }
1682 }
1683 if (f->vendor_id > 0 &&
1684 f->vendor_id != ddesc.idVendor) {
1685 continue;
1686 }
1687 if (f->product_id > 0 &&
1688 f->product_id != ddesc.idProduct) {
1689 continue;
1690 }
1691
1692 /* We got a match */
1693 s->seen++;
1694 if (s->errcount >= 3) {
1695 continue;
1696 }
1697 if (s->dh != NULL) {
1698 continue;
1699 }
1700 if (usb_host_open(s, devs[i]) < 0) {
1701 s->errcount++;
1702 continue;
1703 }
1704 break;
1705 }
1706 }
1707 libusb_free_device_list(devs, 1);
1708
1709 QTAILQ_FOREACH(s, &hostdevs, next) {
1710 if (s->dh == NULL) {
1711 unconnected++;
1712 }
1713 if (s->seen == 0) {
1714 if (s->dh) {
1715 usb_host_close(s);
1716 }
1717 s->errcount = 0;
1718 }
1719 s->seen = 0;
1720 }
1721
1722 #if 0
1723 if (unconnected == 0) {
1724 /* nothing to watch */
1725 if (usb_auto_timer) {
1726 timer_del(usb_auto_timer);
1727 trace_usb_host_auto_scan_disabled();
1728 }
1729 return;
1730 }
1731 #endif
1732 }
1733
1734 if (!usb_vmstate) {
1735 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1736 }
1737 if (!usb_auto_timer) {
1738 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1739 if (!usb_auto_timer) {
1740 return;
1741 }
1742 trace_usb_host_auto_scan_enabled();
1743 }
1744 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1745 }
1746
1747 /**
1748 * Check whether USB host device has a USB mass storage SCSI interface
1749 */
1750 bool usb_host_dev_is_scsi_storage(USBDevice *ud)
1751 {
1752 USBHostDevice *uhd = USB_HOST_DEVICE(ud);
1753 struct libusb_config_descriptor *conf;
1754 const struct libusb_interface_descriptor *intf;
1755 bool is_scsi_storage = false;
1756 int i;
1757
1758 if (!uhd || libusb_get_active_config_descriptor(uhd->dev, &conf) != 0) {
1759 return false;
1760 }
1761
1762 for (i = 0; i < conf->bNumInterfaces; i++) {
1763 intf = &conf->interface[i].altsetting[ud->altsetting[i]];
1764 if (intf->bInterfaceClass == LIBUSB_CLASS_MASS_STORAGE &&
1765 intf->bInterfaceSubClass == 6) { /* 6 means SCSI */
1766 is_scsi_storage = true;
1767 break;
1768 }
1769 }
1770
1771 libusb_free_config_descriptor(conf);
1772
1773 return is_scsi_storage;
1774 }
1775
1776 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1777 {
1778 libusb_device **devs = NULL;
1779 struct libusb_device_descriptor ddesc;
1780 char port[16];
1781 int i, n;
1782
1783 if (usb_host_init() != 0) {
1784 return;
1785 }
1786
1787 n = libusb_get_device_list(ctx, &devs);
1788 for (i = 0; i < n; i++) {
1789 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1790 continue;
1791 }
1792 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1793 continue;
1794 }
1795 usb_host_get_port(devs[i], port, sizeof(port));
1796 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1797 libusb_get_bus_number(devs[i]),
1798 libusb_get_device_address(devs[i]),
1799 port,
1800 speed_name[libusb_get_device_speed(devs[i])]);
1801 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1802 monitor_printf(mon, " USB device %04x:%04x",
1803 ddesc.idVendor, ddesc.idProduct);
1804 if (ddesc.iProduct) {
1805 libusb_device_handle *handle;
1806 if (libusb_open(devs[i], &handle) == 0) {
1807 unsigned char name[64] = "";
1808 libusb_get_string_descriptor_ascii(handle,
1809 ddesc.iProduct,
1810 name, sizeof(name));
1811 libusb_close(handle);
1812 monitor_printf(mon, ", %s", name);
1813 }
1814 }
1815 monitor_printf(mon, "\n");
1816 }
1817 libusb_free_device_list(devs, 1);
1818 }
armbru's QEMU hackery