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vhdx: use QEMU_ALIGN_DOWN
[qemu/ar7.git] / hw / usb / host-libusb.c
blob1b0be071ccc08445469b40fb22a6c457a8335b73
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 "qemu-common.h"
44 #include "monitor/monitor.h"
45 #include "qemu/error-report.h"
46 #include "sysemu/sysemu.h"
47 #include "trace.h"
48
49 #include "hw/usb.h"
50
51 /* ------------------------------------------------------------------------ */
52
53 #define TYPE_USB_HOST_DEVICE "usb-host"
54 #define USB_HOST_DEVICE(obj) \
55 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
56
57 typedef struct USBHostDevice USBHostDevice;
58 typedef struct USBHostRequest USBHostRequest;
59 typedef struct USBHostIsoXfer USBHostIsoXfer;
60 typedef struct USBHostIsoRing USBHostIsoRing;
61
62 struct USBAutoFilter {
63 uint32_t bus_num;
64 uint32_t addr;
65 char *port;
66 uint32_t vendor_id;
67 uint32_t product_id;
68 };
69
70 enum USBHostDeviceOptions {
71 USB_HOST_OPT_PIPELINE,
72 };
73
74 struct USBHostDevice {
75 USBDevice parent_obj;
76
77 /* properties */
78 struct USBAutoFilter match;
79 int32_t bootindex;
80 uint32_t iso_urb_count;
81 uint32_t iso_urb_frames;
82 uint32_t options;
83 uint32_t loglevel;
84 bool needs_autoscan;
85
86 /* state */
87 QTAILQ_ENTRY(USBHostDevice) next;
88 int seen, errcount;
89 int bus_num;
90 int addr;
91 char port[16];
92
93 libusb_device *dev;
94 libusb_device_handle *dh;
95 struct libusb_device_descriptor ddesc;
96
97 struct {
98 bool detached;
99 bool claimed;
100 } ifs[USB_MAX_INTERFACES];
101
102 /* callbacks & friends */
103 QEMUBH *bh_nodev;
104 QEMUBH *bh_postld;
105 Notifier exit;
106
107 /* request queues */
108 QTAILQ_HEAD(, USBHostRequest) requests;
109 QTAILQ_HEAD(, USBHostIsoRing) isorings;
110 };
111
112 struct USBHostRequest {
113 USBHostDevice *host;
114 USBPacket *p;
115 bool in;
116 struct libusb_transfer *xfer;
117 unsigned char *buffer;
118 unsigned char *cbuf;
119 unsigned int clen;
120 bool usb3ep0quirk;
121 QTAILQ_ENTRY(USBHostRequest) next;
122 };
123
124 struct USBHostIsoXfer {
125 USBHostIsoRing *ring;
126 struct libusb_transfer *xfer;
127 bool copy_complete;
128 unsigned int packet;
129 QTAILQ_ENTRY(USBHostIsoXfer) next;
130 };
131
132 struct USBHostIsoRing {
133 USBHostDevice *host;
134 USBEndpoint *ep;
135 QTAILQ_HEAD(, USBHostIsoXfer) unused;
136 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
137 QTAILQ_HEAD(, USBHostIsoXfer) copy;
138 QTAILQ_ENTRY(USBHostIsoRing) next;
139 };
140
141 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
142 QTAILQ_HEAD_INITIALIZER(hostdevs);
143
144 static void usb_host_auto_check(void *unused);
145 static void usb_host_release_interfaces(USBHostDevice *s);
146 static void usb_host_nodev(USBHostDevice *s);
147 static void usb_host_detach_kernel(USBHostDevice *s);
148 static void usb_host_attach_kernel(USBHostDevice *s);
149
150 /* ------------------------------------------------------------------------ */
151
152 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
153 #define LIBUSB_LOG_LEVEL_WARNING 2
154 #endif
155
156 /* ------------------------------------------------------------------------ */
157
158 #define CONTROL_TIMEOUT 10000 /* 10 sec */
159 #define BULK_TIMEOUT 0 /* unlimited */
160 #define INTR_TIMEOUT 0 /* unlimited */
161
162 #ifndef LIBUSB_API_VERSION
163 # define LIBUSB_API_VERSION LIBUSBX_API_VERSION
164 #endif
165 #if LIBUSB_API_VERSION >= 0x01000103
166 # define HAVE_STREAMS 1
167 #endif
168
169 static const char *speed_name[] = {
170 [LIBUSB_SPEED_UNKNOWN] = "?",
171 [LIBUSB_SPEED_LOW] = "1.5",
172 [LIBUSB_SPEED_FULL] = "12",
173 [LIBUSB_SPEED_HIGH] = "480",
174 [LIBUSB_SPEED_SUPER] = "5000",
175 };
176
177 static const unsigned int speed_map[] = {
178 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
179 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
180 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
181 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
182 };
183
184 static const unsigned int status_map[] = {
185 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
186 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
187 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
188 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
189 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
190 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
191 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
192 };
193
194 static const char *err_names[] = {
195 [-LIBUSB_ERROR_IO] = "IO",
196 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
197 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
198 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
199 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
200 [-LIBUSB_ERROR_BUSY] = "BUSY",
201 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
202 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
203 [-LIBUSB_ERROR_PIPE] = "PIPE",
204 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
205 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
206 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
207 [-LIBUSB_ERROR_OTHER] = "OTHER",
208 };
209
210 static libusb_context *ctx;
211 static uint32_t loglevel;
212
213 #ifndef CONFIG_WIN32
214
215 static void usb_host_handle_fd(void *opaque)
216 {
217 struct timeval tv = { 0, 0 };
218 libusb_handle_events_timeout(ctx, &tv);
219 }
220
221 static void usb_host_add_fd(int fd, short events, void *user_data)
222 {
223 qemu_set_fd_handler(fd,
224 (events & POLLIN) ? usb_host_handle_fd : NULL,
225 (events & POLLOUT) ? usb_host_handle_fd : NULL,
226 ctx);
227 }
228
229 static void usb_host_del_fd(int fd, void *user_data)
230 {
231 qemu_set_fd_handler(fd, NULL, NULL, NULL);
232 }
233
234 #endif /* !CONFIG_WIN32 */
235
236 static int usb_host_init(void)
237 {
238 #ifndef CONFIG_WIN32
239 const struct libusb_pollfd **poll;
240 #endif
241 int rc;
242
243 if (ctx) {
244 return 0;
245 }
246 rc = libusb_init(&ctx);
247 if (rc != 0) {
248 return -1;
249 }
250 libusb_set_debug(ctx, loglevel);
251 #ifdef CONFIG_WIN32
252 /* FIXME: add support for Windows. */
253 #else
254 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
255 usb_host_del_fd,
256 ctx);
257 poll = libusb_get_pollfds(ctx);
258 if (poll) {
259 int i;
260 for (i = 0; poll[i] != NULL; i++) {
261 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
262 }
263 }
264 free(poll);
265 #endif
266 return 0;
267 }
268
269 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
270 {
271 uint8_t path[7];
272 size_t off;
273 int rc, i;
274
275 #if LIBUSB_API_VERSION >= 0x01000102
276 rc = libusb_get_port_numbers(dev, path, 7);
277 #else
278 rc = libusb_get_port_path(ctx, dev, path, 7);
279 #endif
280 if (rc < 0) {
281 return 0;
282 }
283 off = snprintf(port, len, "%d", path[0]);
284 for (i = 1; i < rc; i++) {
285 off += snprintf(port+off, len-off, ".%d", path[i]);
286 }
287 return off;
288 }
289
290 static void usb_host_libusb_error(const char *func, int rc)
291 {
292 const char *errname;
293
294 if (rc >= 0) {
295 return;
296 }
297
298 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
299 errname = err_names[-rc];
300 } else {
301 errname = "?";
302 }
303 error_report("%s: %d [%s]", func, rc, errname);
304 }
305
306 /* ------------------------------------------------------------------------ */
307
308 static bool usb_host_use_combining(USBEndpoint *ep)
309 {
310 int type;
311
312 if (!ep->pipeline) {
313 return false;
314 }
315 if (ep->pid != USB_TOKEN_IN) {
316 return false;
317 }
318 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
319 if (type != USB_ENDPOINT_XFER_BULK) {
320 return false;
321 }
322 return true;
323 }
324
325 /* ------------------------------------------------------------------------ */
326
327 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
328 bool in, size_t bufsize)
329 {
330 USBHostRequest *r = g_new0(USBHostRequest, 1);
331
332 r->host = s;
333 r->p = p;
334 r->in = in;
335 r->xfer = libusb_alloc_transfer(0);
336 if (bufsize) {
337 r->buffer = g_malloc(bufsize);
338 }
339 QTAILQ_INSERT_TAIL(&s->requests, r, next);
340 return r;
341 }
342
343 static void usb_host_req_free(USBHostRequest *r)
344 {
345 if (r->host) {
346 QTAILQ_REMOVE(&r->host->requests, r, next);
347 }
348 libusb_free_transfer(r->xfer);
349 g_free(r->buffer);
350 g_free(r);
351 }
352
353 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
354 {
355 USBHostRequest *r;
356
357 QTAILQ_FOREACH(r, &s->requests, next) {
358 if (r->p == p) {
359 return r;
360 }
361 }
362 return NULL;
363 }
364
365 static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
366 {
367 USBHostRequest *r = xfer->user_data;
368 USBHostDevice *s = r->host;
369 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
370
371 if (r->p == NULL) {
372 goto out; /* request was canceled */
373 }
374
375 r->p->status = status_map[xfer->status];
376 r->p->actual_length = xfer->actual_length;
377 if (r->in && xfer->actual_length) {
378 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
379
380 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
381 * to work redirected to a not superspeed capable hcd */
382 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
383 r->cbuf[7] == 9) {
384 r->cbuf[7] = 64;
385 }
386 }
387 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
388 r->p->status, r->p->actual_length);
389 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
390
391 out:
392 usb_host_req_free(r);
393 if (disconnect) {
394 usb_host_nodev(s);
395 }
396 }
397
398 static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
399 {
400 USBHostRequest *r = xfer->user_data;
401 USBHostDevice *s = r->host;
402 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
403
404 if (r->p == NULL) {
405 goto out; /* request was canceled */
406 }
407
408 r->p->status = status_map[xfer->status];
409 if (r->in && xfer->actual_length) {
410 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
411 }
412 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
413 r->p->status, r->p->actual_length);
414 if (usb_host_use_combining(r->p->ep)) {
415 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
416 } else {
417 usb_packet_complete(USB_DEVICE(s), r->p);
418 }
419
420 out:
421 usb_host_req_free(r);
422 if (disconnect) {
423 usb_host_nodev(s);
424 }
425 }
426
427 static void usb_host_req_abort(USBHostRequest *r)
428 {
429 USBHostDevice *s = r->host;
430 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
431
432 if (inflight) {
433 r->p->status = USB_RET_NODEV;
434 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
435 r->p->status, r->p->actual_length);
436 if (r->p->ep->nr == 0) {
437 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
438 } else {
439 usb_packet_complete(USB_DEVICE(s), r->p);
440 }
441 r->p = NULL;
442 }
443
444 QTAILQ_REMOVE(&r->host->requests, r, next);
445 r->host = NULL;
446
447 if (inflight) {
448 libusb_cancel_transfer(r->xfer);
449 }
450 }
451
452 /* ------------------------------------------------------------------------ */
453
454 static void LIBUSB_CALL
455 usb_host_req_complete_iso(struct libusb_transfer *transfer)
456 {
457 USBHostIsoXfer *xfer = transfer->user_data;
458
459 if (!xfer) {
460 /* USBHostIsoXfer released while inflight */
461 g_free(transfer->buffer);
462 libusb_free_transfer(transfer);
463 return;
464 }
465
466 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
467 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
468 USBHostDevice *s = xfer->ring->host;
469 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
470 }
471 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
472 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
473 usb_wakeup(xfer->ring->ep, 0);
474 } else {
475 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
476 }
477 }
478
479 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
480 {
481 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
482 USBHostIsoXfer *xfer;
483 /* FIXME: check interval (for now assume one xfer per frame) */
484 int packets = s->iso_urb_frames;
485 int i;
486
487 ring->host = s;
488 ring->ep = ep;
489 QTAILQ_INIT(&ring->unused);
490 QTAILQ_INIT(&ring->inflight);
491 QTAILQ_INIT(&ring->copy);
492 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
493
494 for (i = 0; i < s->iso_urb_count; i++) {
495 xfer = g_new0(USBHostIsoXfer, 1);
496 xfer->ring = ring;
497 xfer->xfer = libusb_alloc_transfer(packets);
498 xfer->xfer->dev_handle = s->dh;
499 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
500
501 xfer->xfer->endpoint = ring->ep->nr;
502 if (ring->ep->pid == USB_TOKEN_IN) {
503 xfer->xfer->endpoint |= USB_DIR_IN;
504 }
505 xfer->xfer->callback = usb_host_req_complete_iso;
506 xfer->xfer->user_data = xfer;
507
508 xfer->xfer->num_iso_packets = packets;
509 xfer->xfer->length = ring->ep->max_packet_size * packets;
510 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
511
512 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
513 }
514
515 return ring;
516 }
517
518 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
519 {
520 USBHostIsoRing *ring;
521
522 QTAILQ_FOREACH(ring, &s->isorings, next) {
523 if (ring->ep == ep) {
524 return ring;
525 }
526 }
527 return NULL;
528 }
529
530 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
531 {
532 libusb_set_iso_packet_lengths(xfer->xfer,
533 xfer->ring->ep->max_packet_size);
534 xfer->packet = 0;
535 xfer->copy_complete = false;
536 }
537
538 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
539 {
540 if (inflight) {
541 xfer->xfer->user_data = NULL;
542 } else {
543 g_free(xfer->xfer->buffer);
544 libusb_free_transfer(xfer->xfer);
545 }
546 g_free(xfer);
547 }
548
549 static void usb_host_iso_free(USBHostIsoRing *ring)
550 {
551 USBHostIsoXfer *xfer;
552
553 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
554 QTAILQ_REMOVE(&ring->inflight, xfer, next);
555 usb_host_iso_free_xfer(xfer, true);
556 }
557 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
558 QTAILQ_REMOVE(&ring->unused, xfer, next);
559 usb_host_iso_free_xfer(xfer, false);
560 }
561 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
562 QTAILQ_REMOVE(&ring->copy, xfer, next);
563 usb_host_iso_free_xfer(xfer, false);
564 }
565
566 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
567 g_free(ring);
568 }
569
570 static void usb_host_iso_free_all(USBHostDevice *s)
571 {
572 USBHostIsoRing *ring;
573
574 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
575 usb_host_iso_free(ring);
576 }
577 }
578
579 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
580 {
581 unsigned int psize;
582 unsigned char *buf;
583
584 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
585 if (p->pid == USB_TOKEN_OUT) {
586 psize = p->iov.size;
587 if (psize > xfer->ring->ep->max_packet_size) {
588 /* should not happen (guest bug) */
589 psize = xfer->ring->ep->max_packet_size;
590 }
591 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
592 } else {
593 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
594 if (psize > p->iov.size) {
595 /* should not happen (guest bug) */
596 psize = p->iov.size;
597 }
598 }
599 usb_packet_copy(p, buf, psize);
600 xfer->packet++;
601 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
602 return xfer->copy_complete;
603 }
604
605 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
606 {
607 USBHostIsoRing *ring;
608 USBHostIsoXfer *xfer;
609 bool disconnect = false;
610 int rc;
611
612 ring = usb_host_iso_find(s, p->ep);
613 if (ring == NULL) {
614 ring = usb_host_iso_alloc(s, p->ep);
615 }
616
617 /* copy data to guest */
618 xfer = QTAILQ_FIRST(&ring->copy);
619 if (xfer != NULL) {
620 if (usb_host_iso_data_copy(xfer, p)) {
621 QTAILQ_REMOVE(&ring->copy, xfer, next);
622 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
623 }
624 }
625
626 /* submit empty bufs to host */
627 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
628 QTAILQ_REMOVE(&ring->unused, xfer, next);
629 usb_host_iso_reset_xfer(xfer);
630 rc = libusb_submit_transfer(xfer->xfer);
631 if (rc != 0) {
632 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
633 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
634 if (rc == LIBUSB_ERROR_NO_DEVICE) {
635 disconnect = true;
636 }
637 break;
638 }
639 if (QTAILQ_EMPTY(&ring->inflight)) {
640 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
641 }
642 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
643 }
644
645 if (disconnect) {
646 usb_host_nodev(s);
647 }
648 }
649
650 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
651 {
652 USBHostIsoRing *ring;
653 USBHostIsoXfer *xfer;
654 bool disconnect = false;
655 int rc, filled = 0;
656
657 ring = usb_host_iso_find(s, p->ep);
658 if (ring == NULL) {
659 ring = usb_host_iso_alloc(s, p->ep);
660 }
661
662 /* copy data from guest */
663 xfer = QTAILQ_FIRST(&ring->copy);
664 while (xfer != NULL && xfer->copy_complete) {
665 filled++;
666 xfer = QTAILQ_NEXT(xfer, next);
667 }
668 if (xfer == NULL) {
669 xfer = QTAILQ_FIRST(&ring->unused);
670 if (xfer == NULL) {
671 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
672 return;
673 }
674 QTAILQ_REMOVE(&ring->unused, xfer, next);
675 usb_host_iso_reset_xfer(xfer);
676 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
677 }
678 usb_host_iso_data_copy(xfer, p);
679
680 if (QTAILQ_EMPTY(&ring->inflight)) {
681 /* wait until half of our buffers are filled
682 before kicking the iso out stream */
683 if (filled*2 < s->iso_urb_count) {
684 return;
685 }
686 }
687
688 /* submit filled bufs to host */
689 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
690 xfer->copy_complete) {
691 QTAILQ_REMOVE(&ring->copy, xfer, next);
692 rc = libusb_submit_transfer(xfer->xfer);
693 if (rc != 0) {
694 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
695 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
696 if (rc == LIBUSB_ERROR_NO_DEVICE) {
697 disconnect = true;
698 }
699 break;
700 }
701 if (QTAILQ_EMPTY(&ring->inflight)) {
702 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
703 }
704 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
705 }
706
707 if (disconnect) {
708 usb_host_nodev(s);
709 }
710 }
711
712 /* ------------------------------------------------------------------------ */
713
714 static void usb_host_speed_compat(USBHostDevice *s)
715 {
716 USBDevice *udev = USB_DEVICE(s);
717 struct libusb_config_descriptor *conf;
718 const struct libusb_interface_descriptor *intf;
719 const struct libusb_endpoint_descriptor *endp;
720 #ifdef HAVE_STREAMS
721 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
722 #endif
723 bool compat_high = true;
724 bool compat_full = true;
725 uint8_t type;
726 int rc, c, i, a, e;
727
728 for (c = 0;; c++) {
729 rc = libusb_get_config_descriptor(s->dev, c, &conf);
730 if (rc != 0) {
731 break;
732 }
733 for (i = 0; i < conf->bNumInterfaces; i++) {
734 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
735 intf = &conf->interface[i].altsetting[a];
736 for (e = 0; e < intf->bNumEndpoints; e++) {
737 endp = &intf->endpoint[e];
738 type = endp->bmAttributes & 0x3;
739 switch (type) {
740 case 0x01: /* ISO */
741 compat_full = false;
742 compat_high = false;
743 break;
744 case 0x02: /* BULK */
745 #ifdef HAVE_STREAMS
746 rc = libusb_get_ss_endpoint_companion_descriptor
747 (ctx, endp, &endp_ss_comp);
748 if (rc == LIBUSB_SUCCESS) {
749 int streams = endp_ss_comp->bmAttributes & 0x1f;
750 if (streams) {
751 compat_full = false;
752 compat_high = false;
753 }
754 libusb_free_ss_endpoint_companion_descriptor
755 (endp_ss_comp);
756 }
757 #endif
758 break;
759 case 0x03: /* INTERRUPT */
760 if (endp->wMaxPacketSize > 64) {
761 compat_full = false;
762 }
763 if (endp->wMaxPacketSize > 1024) {
764 compat_high = false;
765 }
766 break;
767 }
768 }
769 }
770 }
771 libusb_free_config_descriptor(conf);
772 }
773
774 udev->speedmask = (1 << udev->speed);
775 if (udev->speed == USB_SPEED_SUPER && compat_high) {
776 udev->speedmask |= USB_SPEED_MASK_HIGH;
777 }
778 if (udev->speed == USB_SPEED_SUPER && compat_full) {
779 udev->speedmask |= USB_SPEED_MASK_FULL;
780 }
781 if (udev->speed == USB_SPEED_HIGH && compat_full) {
782 udev->speedmask |= USB_SPEED_MASK_FULL;
783 }
784 }
785
786 static void usb_host_ep_update(USBHostDevice *s)
787 {
788 static const char *tname[] = {
789 [USB_ENDPOINT_XFER_CONTROL] = "control",
790 [USB_ENDPOINT_XFER_ISOC] = "isoc",
791 [USB_ENDPOINT_XFER_BULK] = "bulk",
792 [USB_ENDPOINT_XFER_INT] = "int",
793 };
794 USBDevice *udev = USB_DEVICE(s);
795 struct libusb_config_descriptor *conf;
796 const struct libusb_interface_descriptor *intf;
797 const struct libusb_endpoint_descriptor *endp;
798 #ifdef HAVE_STREAMS
799 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
800 #endif
801 uint8_t devep, type;
802 int pid, ep;
803 int rc, i, e;
804
805 usb_ep_reset(udev);
806 rc = libusb_get_active_config_descriptor(s->dev, &conf);
807 if (rc != 0) {
808 return;
809 }
810 trace_usb_host_parse_config(s->bus_num, s->addr,
811 conf->bConfigurationValue, true);
812
813 for (i = 0; i < conf->bNumInterfaces; i++) {
814 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
815 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
816 trace_usb_host_parse_interface(s->bus_num, s->addr,
817 intf->bInterfaceNumber,
818 intf->bAlternateSetting, true);
819 for (e = 0; e < intf->bNumEndpoints; e++) {
820 endp = &intf->endpoint[e];
821
822 devep = endp->bEndpointAddress;
823 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
824 ep = devep & 0xf;
825 type = endp->bmAttributes & 0x3;
826
827 if (ep == 0) {
828 trace_usb_host_parse_error(s->bus_num, s->addr,
829 "invalid endpoint address");
830 return;
831 }
832 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
833 trace_usb_host_parse_error(s->bus_num, s->addr,
834 "duplicate endpoint address");
835 return;
836 }
837
838 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
839 (devep & USB_DIR_IN) ? "in" : "out",
840 tname[type], true);
841 usb_ep_set_max_packet_size(udev, pid, ep,
842 endp->wMaxPacketSize);
843 usb_ep_set_type(udev, pid, ep, type);
844 usb_ep_set_ifnum(udev, pid, ep, i);
845 usb_ep_set_halted(udev, pid, ep, 0);
846 #ifdef HAVE_STREAMS
847 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
848 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
849 &endp_ss_comp) == LIBUSB_SUCCESS) {
850 usb_ep_set_max_streams(udev, pid, ep,
851 endp_ss_comp->bmAttributes);
852 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
853 }
854 #endif
855 }
856 }
857
858 libusb_free_config_descriptor(conf);
859 }
860
861 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
862 {
863 USBDevice *udev = USB_DEVICE(s);
864 int bus_num = libusb_get_bus_number(dev);
865 int addr = libusb_get_device_address(dev);
866 int rc;
867 Error *local_err = NULL;
868
869 trace_usb_host_open_started(bus_num, addr);
870
871 if (s->dh != NULL) {
872 goto fail;
873 }
874 rc = libusb_open(dev, &s->dh);
875 if (rc != 0) {
876 goto fail;
877 }
878
879 s->dev = dev;
880 s->bus_num = bus_num;
881 s->addr = addr;
882
883 usb_host_detach_kernel(s);
884
885 libusb_get_device_descriptor(dev, &s->ddesc);
886 usb_host_get_port(s->dev, s->port, sizeof(s->port));
887
888 usb_ep_init(udev);
889 usb_host_ep_update(s);
890
891 udev->speed = speed_map[libusb_get_device_speed(dev)];
892 usb_host_speed_compat(s);
893
894 if (s->ddesc.iProduct) {
895 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
896 (unsigned char *)udev->product_desc,
897 sizeof(udev->product_desc));
898 } else {
899 snprintf(udev->product_desc, sizeof(udev->product_desc),
900 "host:%d.%d", bus_num, addr);
901 }
902
903 usb_device_attach(udev, &local_err);
904 if (local_err) {
905 error_report_err(local_err);
906 goto fail;
907 }
908
909 trace_usb_host_open_success(bus_num, addr);
910 return 0;
911
912 fail:
913 trace_usb_host_open_failure(bus_num, addr);
914 if (s->dh != NULL) {
915 usb_host_release_interfaces(s);
916 libusb_reset_device(s->dh);
917 usb_host_attach_kernel(s);
918 libusb_close(s->dh);
919 s->dh = NULL;
920 s->dev = NULL;
921 }
922 return -1;
923 }
924
925 static void usb_host_abort_xfers(USBHostDevice *s)
926 {
927 USBHostRequest *r, *rtmp;
928
929 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
930 usb_host_req_abort(r);
931 }
932 }
933
934 static int usb_host_close(USBHostDevice *s)
935 {
936 USBDevice *udev = USB_DEVICE(s);
937
938 if (s->dh == NULL) {
939 return -1;
940 }
941
942 trace_usb_host_close(s->bus_num, s->addr);
943
944 usb_host_abort_xfers(s);
945 usb_host_iso_free_all(s);
946
947 if (udev->attached) {
948 usb_device_detach(udev);
949 }
950
951 usb_host_release_interfaces(s);
952 libusb_reset_device(s->dh);
953 usb_host_attach_kernel(s);
954 libusb_close(s->dh);
955 s->dh = NULL;
956 s->dev = NULL;
957
958 usb_host_auto_check(NULL);
959 return 0;
960 }
961
962 static void usb_host_nodev_bh(void *opaque)
963 {
964 USBHostDevice *s = opaque;
965 usb_host_close(s);
966 }
967
968 static void usb_host_nodev(USBHostDevice *s)
969 {
970 if (!s->bh_nodev) {
971 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
972 }
973 qemu_bh_schedule(s->bh_nodev);
974 }
975
976 static void usb_host_exit_notifier(struct Notifier *n, void *data)
977 {
978 USBHostDevice *s = container_of(n, USBHostDevice, exit);
979
980 if (s->dh) {
981 usb_host_release_interfaces(s);
982 usb_host_attach_kernel(s);
983 }
984 }
985
986 static libusb_device *usb_host_find_ref(int bus, int addr)
987 {
988 libusb_device **devs = NULL;
989 libusb_device *ret = NULL;
990 int i, n;
991
992 if (usb_host_init() != 0) {
993 return NULL;
994 }
995 n = libusb_get_device_list(ctx, &devs);
996 for (i = 0; i < n; i++) {
997 if (libusb_get_bus_number(devs[i]) == bus &&
998 libusb_get_device_address(devs[i]) == addr) {
999 ret = libusb_ref_device(devs[i]);
1000 break;
1001 }
1002 }
1003 libusb_free_device_list(devs, 1);
1004 return ret;
1005 }
1006
1007 static void usb_host_realize(USBDevice *udev, Error **errp)
1008 {
1009 USBHostDevice *s = USB_HOST_DEVICE(udev);
1010 libusb_device *ldev;
1011 int rc;
1012
1013 if (s->match.vendor_id > 0xffff) {
1014 error_setg(errp, "vendorid out of range");
1015 return;
1016 }
1017 if (s->match.product_id > 0xffff) {
1018 error_setg(errp, "productid out of range");
1019 return;
1020 }
1021 if (s->match.addr > 127) {
1022 error_setg(errp, "hostaddr out of range");
1023 return;
1024 }
1025
1026 loglevel = s->loglevel;
1027 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
1028 udev->auto_attach = 0;
1029 QTAILQ_INIT(&s->requests);
1030 QTAILQ_INIT(&s->isorings);
1031
1032 if (s->match.addr && s->match.bus_num &&
1033 !s->match.vendor_id &&
1034 !s->match.product_id &&
1035 !s->match.port) {
1036 s->needs_autoscan = false;
1037 ldev = usb_host_find_ref(s->match.bus_num,
1038 s->match.addr);
1039 if (!ldev) {
1040 error_setg(errp, "failed to find host usb device %d:%d",
1041 s->match.bus_num, s->match.addr);
1042 return;
1043 }
1044 rc = usb_host_open(s, ldev);
1045 libusb_unref_device(ldev);
1046 if (rc < 0) {
1047 error_setg(errp, "failed to open host usb device %d:%d",
1048 s->match.bus_num, s->match.addr);
1049 return;
1050 }
1051 } else {
1052 s->needs_autoscan = true;
1053 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1054 usb_host_auto_check(NULL);
1055 }
1056
1057 s->exit.notify = usb_host_exit_notifier;
1058 qemu_add_exit_notifier(&s->exit);
1059 }
1060
1061 static void usb_host_instance_init(Object *obj)
1062 {
1063 USBDevice *udev = USB_DEVICE(obj);
1064 USBHostDevice *s = USB_HOST_DEVICE(udev);
1065
1066 device_add_bootindex_property(obj, &s->bootindex,
1067 "bootindex", NULL,
1068 &udev->qdev, NULL);
1069 }
1070
1071 static void usb_host_unrealize(USBDevice *udev, Error **errp)
1072 {
1073 USBHostDevice *s = USB_HOST_DEVICE(udev);
1074
1075 qemu_remove_exit_notifier(&s->exit);
1076 if (s->needs_autoscan) {
1077 QTAILQ_REMOVE(&hostdevs, s, next);
1078 }
1079 usb_host_close(s);
1080 }
1081
1082 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1083 {
1084 USBHostDevice *s = USB_HOST_DEVICE(udev);
1085 USBHostRequest *r;
1086
1087 if (p->combined) {
1088 usb_combined_packet_cancel(udev, p);
1089 return;
1090 }
1091
1092 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1093
1094 r = usb_host_req_find(s, p);
1095 if (r && r->p) {
1096 r->p = NULL; /* mark as dead */
1097 libusb_cancel_transfer(r->xfer);
1098 }
1099 }
1100
1101 static void usb_host_detach_kernel(USBHostDevice *s)
1102 {
1103 struct libusb_config_descriptor *conf;
1104 int rc, i;
1105
1106 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1107 if (rc != 0) {
1108 return;
1109 }
1110 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1111 rc = libusb_kernel_driver_active(s->dh, i);
1112 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1113 if (rc != 1) {
1114 continue;
1115 }
1116 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1117 rc = libusb_detach_kernel_driver(s->dh, i);
1118 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1119 s->ifs[i].detached = true;
1120 }
1121 libusb_free_config_descriptor(conf);
1122 }
1123
1124 static void usb_host_attach_kernel(USBHostDevice *s)
1125 {
1126 struct libusb_config_descriptor *conf;
1127 int rc, i;
1128
1129 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1130 if (rc != 0) {
1131 return;
1132 }
1133 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1134 if (!s->ifs[i].detached) {
1135 continue;
1136 }
1137 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1138 libusb_attach_kernel_driver(s->dh, i);
1139 s->ifs[i].detached = false;
1140 }
1141 libusb_free_config_descriptor(conf);
1142 }
1143
1144 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1145 {
1146 USBDevice *udev = USB_DEVICE(s);
1147 struct libusb_config_descriptor *conf;
1148 int rc, i, claimed;
1149
1150 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1151 udev->altsetting[i] = 0;
1152 }
1153 udev->ninterfaces = 0;
1154 udev->configuration = 0;
1155
1156 usb_host_detach_kernel(s);
1157
1158 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1159 if (rc != 0) {
1160 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1161 /* address state - ignore */
1162 return USB_RET_SUCCESS;
1163 }
1164 return USB_RET_STALL;
1165 }
1166
1167 claimed = 0;
1168 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1169 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1170 rc = libusb_claim_interface(s->dh, i);
1171 if (rc == 0) {
1172 s->ifs[i].claimed = true;
1173 if (++claimed == conf->bNumInterfaces) {
1174 break;
1175 }
1176 }
1177 }
1178 if (claimed != conf->bNumInterfaces) {
1179 return USB_RET_STALL;
1180 }
1181
1182 udev->ninterfaces = conf->bNumInterfaces;
1183 udev->configuration = configuration;
1184
1185 libusb_free_config_descriptor(conf);
1186 return USB_RET_SUCCESS;
1187 }
1188
1189 static void usb_host_release_interfaces(USBHostDevice *s)
1190 {
1191 int i, rc;
1192
1193 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1194 if (!s->ifs[i].claimed) {
1195 continue;
1196 }
1197 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1198 rc = libusb_release_interface(s->dh, i);
1199 usb_host_libusb_error("libusb_release_interface", rc);
1200 s->ifs[i].claimed = false;
1201 }
1202 }
1203
1204 static void usb_host_set_address(USBHostDevice *s, int addr)
1205 {
1206 USBDevice *udev = USB_DEVICE(s);
1207
1208 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1209 udev->addr = addr;
1210 }
1211
1212 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1213 {
1214 int rc;
1215
1216 trace_usb_host_set_config(s->bus_num, s->addr, config);
1217
1218 usb_host_release_interfaces(s);
1219 rc = libusb_set_configuration(s->dh, config);
1220 if (rc != 0) {
1221 usb_host_libusb_error("libusb_set_configuration", rc);
1222 p->status = USB_RET_STALL;
1223 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1224 usb_host_nodev(s);
1225 }
1226 return;
1227 }
1228 p->status = usb_host_claim_interfaces(s, config);
1229 if (p->status != USB_RET_SUCCESS) {
1230 return;
1231 }
1232 usb_host_ep_update(s);
1233 }
1234
1235 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1236 USBPacket *p)
1237 {
1238 USBDevice *udev = USB_DEVICE(s);
1239 int rc;
1240
1241 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1242
1243 usb_host_iso_free_all(s);
1244
1245 if (iface >= USB_MAX_INTERFACES) {
1246 p->status = USB_RET_STALL;
1247 return;
1248 }
1249
1250 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1251 if (rc != 0) {
1252 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1253 p->status = USB_RET_STALL;
1254 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1255 usb_host_nodev(s);
1256 }
1257 return;
1258 }
1259
1260 udev->altsetting[iface] = alt;
1261 usb_host_ep_update(s);
1262 }
1263
1264 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1265 int request, int value, int index,
1266 int length, uint8_t *data)
1267 {
1268 USBHostDevice *s = USB_HOST_DEVICE(udev);
1269 USBHostRequest *r;
1270 int rc;
1271
1272 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1273
1274 if (s->dh == NULL) {
1275 p->status = USB_RET_NODEV;
1276 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1277 return;
1278 }
1279
1280 switch (request) {
1281 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1282 usb_host_set_address(s, value);
1283 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1284 return;
1285
1286 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1287 usb_host_set_config(s, value & 0xff, p);
1288 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1289 return;
1290
1291 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1292 usb_host_set_interface(s, index, value, p);
1293 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1294 return;
1295
1296 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1297 if (value == 0) { /* clear halt */
1298 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1299 libusb_clear_halt(s->dh, index);
1300 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1301 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1302 return;
1303 }
1304 }
1305
1306 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1307 r->cbuf = data;
1308 r->clen = length;
1309 memcpy(r->buffer, udev->setup_buf, 8);
1310 if (!r->in) {
1311 memcpy(r->buffer + 8, r->cbuf, r->clen);
1312 }
1313
1314 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1315 * to work redirected to a not superspeed capable hcd */
1316 if ((udev->speedmask & USB_SPEED_MASK_SUPER) &&
1317 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1318 request == 0x8006 && value == 0x100 && index == 0) {
1319 r->usb3ep0quirk = true;
1320 }
1321
1322 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1323 usb_host_req_complete_ctrl, r,
1324 CONTROL_TIMEOUT);
1325 rc = libusb_submit_transfer(r->xfer);
1326 if (rc != 0) {
1327 p->status = USB_RET_NODEV;
1328 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1329 p->status, p->actual_length);
1330 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1331 usb_host_nodev(s);
1332 }
1333 return;
1334 }
1335
1336 p->status = USB_RET_ASYNC;
1337 }
1338
1339 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1340 {
1341 USBHostDevice *s = USB_HOST_DEVICE(udev);
1342 USBHostRequest *r;
1343 size_t size;
1344 int ep, rc;
1345
1346 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1347 p->status = USB_RET_ADD_TO_QUEUE;
1348 return;
1349 }
1350
1351 trace_usb_host_req_data(s->bus_num, s->addr, p,
1352 p->pid == USB_TOKEN_IN,
1353 p->ep->nr, p->iov.size);
1354
1355 if (s->dh == NULL) {
1356 p->status = USB_RET_NODEV;
1357 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1358 return;
1359 }
1360 if (p->ep->halted) {
1361 p->status = USB_RET_STALL;
1362 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1363 return;
1364 }
1365
1366 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1367 case USB_ENDPOINT_XFER_BULK:
1368 size = usb_packet_size(p);
1369 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1370 if (!r->in) {
1371 usb_packet_copy(p, r->buffer, size);
1372 }
1373 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1374 if (p->stream) {
1375 #ifdef HAVE_STREAMS
1376 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1377 r->buffer, size,
1378 usb_host_req_complete_data, r,
1379 BULK_TIMEOUT);
1380 #else
1381 usb_host_req_free(r);
1382 p->status = USB_RET_STALL;
1383 return;
1384 #endif
1385 } else {
1386 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1387 r->buffer, size,
1388 usb_host_req_complete_data, r,
1389 BULK_TIMEOUT);
1390 }
1391 break;
1392 case USB_ENDPOINT_XFER_INT:
1393 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1394 if (!r->in) {
1395 usb_packet_copy(p, r->buffer, p->iov.size);
1396 }
1397 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1398 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1399 r->buffer, p->iov.size,
1400 usb_host_req_complete_data, r,
1401 INTR_TIMEOUT);
1402 break;
1403 case USB_ENDPOINT_XFER_ISOC:
1404 if (p->pid == USB_TOKEN_IN) {
1405 usb_host_iso_data_in(s, p);
1406 } else {
1407 usb_host_iso_data_out(s, p);
1408 }
1409 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1410 p->status, p->actual_length);
1411 return;
1412 default:
1413 p->status = USB_RET_STALL;
1414 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1415 p->status, p->actual_length);
1416 return;
1417 }
1418
1419 rc = libusb_submit_transfer(r->xfer);
1420 if (rc != 0) {
1421 p->status = USB_RET_NODEV;
1422 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1423 p->status, p->actual_length);
1424 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1425 usb_host_nodev(s);
1426 }
1427 return;
1428 }
1429
1430 p->status = USB_RET_ASYNC;
1431 }
1432
1433 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1434 {
1435 if (usb_host_use_combining(ep)) {
1436 usb_ep_combine_input_packets(ep);
1437 }
1438 }
1439
1440 static void usb_host_handle_reset(USBDevice *udev)
1441 {
1442 USBHostDevice *s = USB_HOST_DEVICE(udev);
1443 int rc;
1444
1445 trace_usb_host_reset(s->bus_num, s->addr);
1446
1447 rc = libusb_reset_device(s->dh);
1448 if (rc != 0) {
1449 usb_host_nodev(s);
1450 }
1451 }
1452
1453 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1454 int nr_eps, int streams)
1455 {
1456 #ifdef HAVE_STREAMS
1457 USBHostDevice *s = USB_HOST_DEVICE(udev);
1458 unsigned char endpoints[30];
1459 int i, rc;
1460
1461 for (i = 0; i < nr_eps; i++) {
1462 endpoints[i] = eps[i]->nr;
1463 if (eps[i]->pid == USB_TOKEN_IN) {
1464 endpoints[i] |= 0x80;
1465 }
1466 }
1467 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1468 if (rc < 0) {
1469 usb_host_libusb_error("libusb_alloc_streams", rc);
1470 } else if (rc != streams) {
1471 error_report("libusb_alloc_streams: got less streams "
1472 "then requested %d < %d", rc, streams);
1473 }
1474
1475 return (rc == streams) ? 0 : -1;
1476 #else
1477 error_report("libusb_alloc_streams: error not implemented");
1478 return -1;
1479 #endif
1480 }
1481
1482 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1483 int nr_eps)
1484 {
1485 #ifdef HAVE_STREAMS
1486 USBHostDevice *s = USB_HOST_DEVICE(udev);
1487 unsigned char endpoints[30];
1488 int i;
1489
1490 for (i = 0; i < nr_eps; i++) {
1491 endpoints[i] = eps[i]->nr;
1492 if (eps[i]->pid == USB_TOKEN_IN) {
1493 endpoints[i] |= 0x80;
1494 }
1495 }
1496 libusb_free_streams(s->dh, endpoints, nr_eps);
1497 #endif
1498 }
1499
1500 /*
1501 * This is *NOT* about restoring state. We have absolutely no idea
1502 * what state the host device is in at the moment and whenever it is
1503 * still present in the first place. Attemping to contine where we
1504 * left off is impossible.
1505 *
1506 * What we are going to do here is emulate a surprise removal of
1507 * the usb device passed through, then kick host scan so the device
1508 * will get re-attached (and re-initialized by the guest) in case it
1509 * is still present.
1510 *
1511 * As the device removal will change the state of other devices (usb
1512 * host controller, most likely interrupt controller too) we have to
1513 * wait with it until *all* vmstate is loaded. Thus post_load just
1514 * kicks a bottom half which then does the actual work.
1515 */
1516 static void usb_host_post_load_bh(void *opaque)
1517 {
1518 USBHostDevice *dev = opaque;
1519 USBDevice *udev = USB_DEVICE(dev);
1520
1521 if (dev->dh != NULL) {
1522 usb_host_close(dev);
1523 }
1524 if (udev->attached) {
1525 usb_device_detach(udev);
1526 }
1527 usb_host_auto_check(NULL);
1528 }
1529
1530 static int usb_host_post_load(void *opaque, int version_id)
1531 {
1532 USBHostDevice *dev = opaque;
1533
1534 if (!dev->bh_postld) {
1535 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1536 }
1537 qemu_bh_schedule(dev->bh_postld);
1538 return 0;
1539 }
1540
1541 static const VMStateDescription vmstate_usb_host = {
1542 .name = "usb-host",
1543 .version_id = 1,
1544 .minimum_version_id = 1,
1545 .post_load = usb_host_post_load,
1546 .fields = (VMStateField[]) {
1547 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1548 VMSTATE_END_OF_LIST()
1549 }
1550 };
1551
1552 static Property usb_host_dev_properties[] = {
1553 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1554 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1555 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1556 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1557 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1558 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1559 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1560 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1561 LIBUSB_LOG_LEVEL_WARNING),
1562 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1563 USB_HOST_OPT_PIPELINE, true),
1564 DEFINE_PROP_END_OF_LIST(),
1565 };
1566
1567 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1568 {
1569 DeviceClass *dc = DEVICE_CLASS(klass);
1570 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1571
1572 uc->realize = usb_host_realize;
1573 uc->product_desc = "USB Host Device";
1574 uc->cancel_packet = usb_host_cancel_packet;
1575 uc->handle_data = usb_host_handle_data;
1576 uc->handle_control = usb_host_handle_control;
1577 uc->handle_reset = usb_host_handle_reset;
1578 uc->unrealize = usb_host_unrealize;
1579 uc->flush_ep_queue = usb_host_flush_ep_queue;
1580 uc->alloc_streams = usb_host_alloc_streams;
1581 uc->free_streams = usb_host_free_streams;
1582 dc->vmsd = &vmstate_usb_host;
1583 dc->props = usb_host_dev_properties;
1584 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1585 }
1586
1587 static TypeInfo usb_host_dev_info = {
1588 .name = TYPE_USB_HOST_DEVICE,
1589 .parent = TYPE_USB_DEVICE,
1590 .instance_size = sizeof(USBHostDevice),
1591 .class_init = usb_host_class_initfn,
1592 .instance_init = usb_host_instance_init,
1593 };
1594
1595 static void usb_host_register_types(void)
1596 {
1597 type_register_static(&usb_host_dev_info);
1598 }
1599
1600 type_init(usb_host_register_types)
1601
1602 /* ------------------------------------------------------------------------ */
1603
1604 static QEMUTimer *usb_auto_timer;
1605 static VMChangeStateEntry *usb_vmstate;
1606
1607 static void usb_host_vm_state(void *unused, int running, RunState state)
1608 {
1609 if (running) {
1610 usb_host_auto_check(unused);
1611 }
1612 }
1613
1614 static void usb_host_auto_check(void *unused)
1615 {
1616 struct USBHostDevice *s;
1617 struct USBAutoFilter *f;
1618 libusb_device **devs = NULL;
1619 struct libusb_device_descriptor ddesc;
1620 int unconnected = 0;
1621 int i, n;
1622
1623 if (usb_host_init() != 0) {
1624 return;
1625 }
1626
1627 if (runstate_is_running()) {
1628 n = libusb_get_device_list(ctx, &devs);
1629 for (i = 0; i < n; i++) {
1630 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1631 continue;
1632 }
1633 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1634 continue;
1635 }
1636 QTAILQ_FOREACH(s, &hostdevs, next) {
1637 f = &s->match;
1638 if (f->bus_num > 0 &&
1639 f->bus_num != libusb_get_bus_number(devs[i])) {
1640 continue;
1641 }
1642 if (f->addr > 0 &&
1643 f->addr != libusb_get_device_address(devs[i])) {
1644 continue;
1645 }
1646 if (f->port != NULL) {
1647 char port[16] = "-";
1648 usb_host_get_port(devs[i], port, sizeof(port));
1649 if (strcmp(f->port, port) != 0) {
1650 continue;
1651 }
1652 }
1653 if (f->vendor_id > 0 &&
1654 f->vendor_id != ddesc.idVendor) {
1655 continue;
1656 }
1657 if (f->product_id > 0 &&
1658 f->product_id != ddesc.idProduct) {
1659 continue;
1660 }
1661
1662 /* We got a match */
1663 s->seen++;
1664 if (s->errcount >= 3) {
1665 continue;
1666 }
1667 if (s->dh != NULL) {
1668 continue;
1669 }
1670 if (usb_host_open(s, devs[i]) < 0) {
1671 s->errcount++;
1672 continue;
1673 }
1674 break;
1675 }
1676 }
1677 libusb_free_device_list(devs, 1);
1678
1679 QTAILQ_FOREACH(s, &hostdevs, next) {
1680 if (s->dh == NULL) {
1681 unconnected++;
1682 }
1683 if (s->seen == 0) {
1684 if (s->dh) {
1685 usb_host_close(s);
1686 }
1687 s->errcount = 0;
1688 }
1689 s->seen = 0;
1690 }
1691
1692 #if 0
1693 if (unconnected == 0) {
1694 /* nothing to watch */
1695 if (usb_auto_timer) {
1696 timer_del(usb_auto_timer);
1697 trace_usb_host_auto_scan_disabled();
1698 }
1699 return;
1700 }
1701 #endif
1702 }
1703
1704 if (!usb_vmstate) {
1705 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1706 }
1707 if (!usb_auto_timer) {
1708 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1709 if (!usb_auto_timer) {
1710 return;
1711 }
1712 trace_usb_host_auto_scan_enabled();
1713 }
1714 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1715 }
1716
1717 /**
1718 * Check whether USB host device has a USB mass storage SCSI interface
1719 */
1720 bool usb_host_dev_is_scsi_storage(USBDevice *ud)
1721 {
1722 USBHostDevice *uhd = USB_HOST_DEVICE(ud);
1723 struct libusb_config_descriptor *conf;
1724 const struct libusb_interface_descriptor *intf;
1725 bool is_scsi_storage = false;
1726 int i;
1727
1728 if (!uhd || libusb_get_active_config_descriptor(uhd->dev, &conf) != 0) {
1729 return false;
1730 }
1731
1732 for (i = 0; i < conf->bNumInterfaces; i++) {
1733 intf = &conf->interface[i].altsetting[ud->altsetting[i]];
1734 if (intf->bInterfaceClass == LIBUSB_CLASS_MASS_STORAGE &&
1735 intf->bInterfaceSubClass == 6) { /* 6 means SCSI */
1736 is_scsi_storage = true;
1737 break;
1738 }
1739 }
1740
1741 libusb_free_config_descriptor(conf);
1742
1743 return is_scsi_storage;
1744 }
1745
1746 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1747 {
1748 libusb_device **devs = NULL;
1749 struct libusb_device_descriptor ddesc;
1750 char port[16];
1751 int i, n;
1752
1753 if (usb_host_init() != 0) {
1754 return;
1755 }
1756
1757 n = libusb_get_device_list(ctx, &devs);
1758 for (i = 0; i < n; i++) {
1759 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1760 continue;
1761 }
1762 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1763 continue;
1764 }
1765 usb_host_get_port(devs[i], port, sizeof(port));
1766 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1767 libusb_get_bus_number(devs[i]),
1768 libusb_get_device_address(devs[i]),
1769 port,
1770 speed_name[libusb_get_device_speed(devs[i])]);
1771 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1772 monitor_printf(mon, " USB device %04x:%04x",
1773 ddesc.idVendor, ddesc.idProduct);
1774 if (ddesc.iProduct) {
1775 libusb_device_handle *handle;
1776 if (libusb_open(devs[i], &handle) == 0) {
1777 unsigned char name[64] = "";
1778 libusb_get_string_descriptor_ascii(handle,
1779 ddesc.iProduct,
1780 name, sizeof(name));
1781 libusb_close(handle);
1782 monitor_printf(mon, ", %s", name);
1783 }
1784 }
1785 monitor_printf(mon, "\n");
1786 }
1787 libusb_free_device_list(devs, 1);
1788 }
AR7 emulation for QEMU