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kvm-all: drop kvm_setup_guest_memory
[qemu/ar7.git] / hw / usb / host-libusb.c
blobe94672c15563e77b9a5b1fb099ebd3692c3a2e4a
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 #if LIBUSBX_API_VERSION >= 0x01000103
163 # define HAVE_STREAMS 1
164 #endif
165
166 static const char *speed_name[] = {
167 [LIBUSB_SPEED_UNKNOWN] = "?",
168 [LIBUSB_SPEED_LOW] = "1.5",
169 [LIBUSB_SPEED_FULL] = "12",
170 [LIBUSB_SPEED_HIGH] = "480",
171 [LIBUSB_SPEED_SUPER] = "5000",
172 };
173
174 static const unsigned int speed_map[] = {
175 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
176 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
177 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
178 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
179 };
180
181 static const unsigned int status_map[] = {
182 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
183 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
184 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
185 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
186 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
187 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
188 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
189 };
190
191 static const char *err_names[] = {
192 [-LIBUSB_ERROR_IO] = "IO",
193 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
194 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
195 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
196 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
197 [-LIBUSB_ERROR_BUSY] = "BUSY",
198 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
199 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
200 [-LIBUSB_ERROR_PIPE] = "PIPE",
201 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
202 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
203 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
204 [-LIBUSB_ERROR_OTHER] = "OTHER",
205 };
206
207 static libusb_context *ctx;
208 static uint32_t loglevel;
209
210 #ifndef CONFIG_WIN32
211
212 static void usb_host_handle_fd(void *opaque)
213 {
214 struct timeval tv = { 0, 0 };
215 libusb_handle_events_timeout(ctx, &tv);
216 }
217
218 static void usb_host_add_fd(int fd, short events, void *user_data)
219 {
220 qemu_set_fd_handler(fd,
221 (events & POLLIN) ? usb_host_handle_fd : NULL,
222 (events & POLLOUT) ? usb_host_handle_fd : NULL,
223 ctx);
224 }
225
226 static void usb_host_del_fd(int fd, void *user_data)
227 {
228 qemu_set_fd_handler(fd, NULL, NULL, NULL);
229 }
230
231 #endif /* !CONFIG_WIN32 */
232
233 static int usb_host_init(void)
234 {
235 #ifndef CONFIG_WIN32
236 const struct libusb_pollfd **poll;
237 #endif
238 int rc;
239
240 if (ctx) {
241 return 0;
242 }
243 rc = libusb_init(&ctx);
244 if (rc != 0) {
245 return -1;
246 }
247 libusb_set_debug(ctx, loglevel);
248 #ifdef CONFIG_WIN32
249 /* FIXME: add support for Windows. */
250 #else
251 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
252 usb_host_del_fd,
253 ctx);
254 poll = libusb_get_pollfds(ctx);
255 if (poll) {
256 int i;
257 for (i = 0; poll[i] != NULL; i++) {
258 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
259 }
260 }
261 free(poll);
262 #endif
263 return 0;
264 }
265
266 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
267 {
268 uint8_t path[7];
269 size_t off;
270 int rc, i;
271
272 #if LIBUSBX_API_VERSION >= 0x01000102
273 rc = libusb_get_port_numbers(dev, path, 7);
274 #else
275 rc = libusb_get_port_path(ctx, dev, path, 7);
276 #endif
277 if (rc < 0) {
278 return 0;
279 }
280 off = snprintf(port, len, "%d", path[0]);
281 for (i = 1; i < rc; i++) {
282 off += snprintf(port+off, len-off, ".%d", path[i]);
283 }
284 return off;
285 }
286
287 static void usb_host_libusb_error(const char *func, int rc)
288 {
289 const char *errname;
290
291 if (rc >= 0) {
292 return;
293 }
294
295 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
296 errname = err_names[-rc];
297 } else {
298 errname = "?";
299 }
300 error_report("%s: %d [%s]", func, rc, errname);
301 }
302
303 /* ------------------------------------------------------------------------ */
304
305 static bool usb_host_use_combining(USBEndpoint *ep)
306 {
307 int type;
308
309 if (!ep->pipeline) {
310 return false;
311 }
312 if (ep->pid != USB_TOKEN_IN) {
313 return false;
314 }
315 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
316 if (type != USB_ENDPOINT_XFER_BULK) {
317 return false;
318 }
319 return true;
320 }
321
322 /* ------------------------------------------------------------------------ */
323
324 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
325 bool in, size_t bufsize)
326 {
327 USBHostRequest *r = g_new0(USBHostRequest, 1);
328
329 r->host = s;
330 r->p = p;
331 r->in = in;
332 r->xfer = libusb_alloc_transfer(0);
333 if (bufsize) {
334 r->buffer = g_malloc(bufsize);
335 }
336 QTAILQ_INSERT_TAIL(&s->requests, r, next);
337 return r;
338 }
339
340 static void usb_host_req_free(USBHostRequest *r)
341 {
342 if (r->host) {
343 QTAILQ_REMOVE(&r->host->requests, r, next);
344 }
345 libusb_free_transfer(r->xfer);
346 g_free(r->buffer);
347 g_free(r);
348 }
349
350 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
351 {
352 USBHostRequest *r;
353
354 QTAILQ_FOREACH(r, &s->requests, next) {
355 if (r->p == p) {
356 return r;
357 }
358 }
359 return NULL;
360 }
361
362 static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
363 {
364 USBHostRequest *r = xfer->user_data;
365 USBHostDevice *s = r->host;
366 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
367
368 if (r->p == NULL) {
369 goto out; /* request was canceled */
370 }
371
372 r->p->status = status_map[xfer->status];
373 r->p->actual_length = xfer->actual_length;
374 if (r->in && xfer->actual_length) {
375 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
376
377 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
378 * to work redirected to a not superspeed capable hcd */
379 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
380 r->cbuf[7] == 9) {
381 r->cbuf[7] = 64;
382 }
383 }
384 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
385 r->p->status, r->p->actual_length);
386 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
387
388 out:
389 usb_host_req_free(r);
390 if (disconnect) {
391 usb_host_nodev(s);
392 }
393 }
394
395 static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
396 {
397 USBHostRequest *r = xfer->user_data;
398 USBHostDevice *s = r->host;
399 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
400
401 if (r->p == NULL) {
402 goto out; /* request was canceled */
403 }
404
405 r->p->status = status_map[xfer->status];
406 if (r->in && xfer->actual_length) {
407 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
408 }
409 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
410 r->p->status, r->p->actual_length);
411 if (usb_host_use_combining(r->p->ep)) {
412 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
413 } else {
414 usb_packet_complete(USB_DEVICE(s), r->p);
415 }
416
417 out:
418 usb_host_req_free(r);
419 if (disconnect) {
420 usb_host_nodev(s);
421 }
422 }
423
424 static void usb_host_req_abort(USBHostRequest *r)
425 {
426 USBHostDevice *s = r->host;
427 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
428
429 if (inflight) {
430 r->p->status = USB_RET_NODEV;
431 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
432 r->p->status, r->p->actual_length);
433 if (r->p->ep->nr == 0) {
434 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
435 } else {
436 usb_packet_complete(USB_DEVICE(s), r->p);
437 }
438 r->p = NULL;
439 }
440
441 QTAILQ_REMOVE(&r->host->requests, r, next);
442 r->host = NULL;
443
444 if (inflight) {
445 libusb_cancel_transfer(r->xfer);
446 }
447 }
448
449 /* ------------------------------------------------------------------------ */
450
451 static void LIBUSB_CALL
452 usb_host_req_complete_iso(struct libusb_transfer *transfer)
453 {
454 USBHostIsoXfer *xfer = transfer->user_data;
455
456 if (!xfer) {
457 /* USBHostIsoXfer released while inflight */
458 g_free(transfer->buffer);
459 libusb_free_transfer(transfer);
460 return;
461 }
462
463 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
464 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
465 USBHostDevice *s = xfer->ring->host;
466 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
467 }
468 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
469 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
470 usb_wakeup(xfer->ring->ep, 0);
471 } else {
472 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
473 }
474 }
475
476 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
477 {
478 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
479 USBHostIsoXfer *xfer;
480 /* FIXME: check interval (for now assume one xfer per frame) */
481 int packets = s->iso_urb_frames;
482 int i;
483
484 ring->host = s;
485 ring->ep = ep;
486 QTAILQ_INIT(&ring->unused);
487 QTAILQ_INIT(&ring->inflight);
488 QTAILQ_INIT(&ring->copy);
489 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
490
491 for (i = 0; i < s->iso_urb_count; i++) {
492 xfer = g_new0(USBHostIsoXfer, 1);
493 xfer->ring = ring;
494 xfer->xfer = libusb_alloc_transfer(packets);
495 xfer->xfer->dev_handle = s->dh;
496 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
497
498 xfer->xfer->endpoint = ring->ep->nr;
499 if (ring->ep->pid == USB_TOKEN_IN) {
500 xfer->xfer->endpoint |= USB_DIR_IN;
501 }
502 xfer->xfer->callback = usb_host_req_complete_iso;
503 xfer->xfer->user_data = xfer;
504
505 xfer->xfer->num_iso_packets = packets;
506 xfer->xfer->length = ring->ep->max_packet_size * packets;
507 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
508
509 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
510 }
511
512 return ring;
513 }
514
515 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
516 {
517 USBHostIsoRing *ring;
518
519 QTAILQ_FOREACH(ring, &s->isorings, next) {
520 if (ring->ep == ep) {
521 return ring;
522 }
523 }
524 return NULL;
525 }
526
527 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
528 {
529 libusb_set_iso_packet_lengths(xfer->xfer,
530 xfer->ring->ep->max_packet_size);
531 xfer->packet = 0;
532 xfer->copy_complete = false;
533 }
534
535 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
536 {
537 if (inflight) {
538 xfer->xfer->user_data = NULL;
539 } else {
540 g_free(xfer->xfer->buffer);
541 libusb_free_transfer(xfer->xfer);
542 }
543 g_free(xfer);
544 }
545
546 static void usb_host_iso_free(USBHostIsoRing *ring)
547 {
548 USBHostIsoXfer *xfer;
549
550 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
551 QTAILQ_REMOVE(&ring->inflight, xfer, next);
552 usb_host_iso_free_xfer(xfer, true);
553 }
554 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
555 QTAILQ_REMOVE(&ring->unused, xfer, next);
556 usb_host_iso_free_xfer(xfer, false);
557 }
558 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
559 QTAILQ_REMOVE(&ring->copy, xfer, next);
560 usb_host_iso_free_xfer(xfer, false);
561 }
562
563 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
564 g_free(ring);
565 }
566
567 static void usb_host_iso_free_all(USBHostDevice *s)
568 {
569 USBHostIsoRing *ring;
570
571 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
572 usb_host_iso_free(ring);
573 }
574 }
575
576 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
577 {
578 unsigned int psize;
579 unsigned char *buf;
580
581 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
582 if (p->pid == USB_TOKEN_OUT) {
583 psize = p->iov.size;
584 if (psize > xfer->ring->ep->max_packet_size) {
585 /* should not happen (guest bug) */
586 psize = xfer->ring->ep->max_packet_size;
587 }
588 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
589 } else {
590 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
591 if (psize > p->iov.size) {
592 /* should not happen (guest bug) */
593 psize = p->iov.size;
594 }
595 }
596 usb_packet_copy(p, buf, psize);
597 xfer->packet++;
598 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
599 return xfer->copy_complete;
600 }
601
602 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
603 {
604 USBHostIsoRing *ring;
605 USBHostIsoXfer *xfer;
606 bool disconnect = false;
607 int rc;
608
609 ring = usb_host_iso_find(s, p->ep);
610 if (ring == NULL) {
611 ring = usb_host_iso_alloc(s, p->ep);
612 }
613
614 /* copy data to guest */
615 xfer = QTAILQ_FIRST(&ring->copy);
616 if (xfer != NULL) {
617 if (usb_host_iso_data_copy(xfer, p)) {
618 QTAILQ_REMOVE(&ring->copy, xfer, next);
619 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
620 }
621 }
622
623 /* submit empty bufs to host */
624 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
625 QTAILQ_REMOVE(&ring->unused, xfer, next);
626 usb_host_iso_reset_xfer(xfer);
627 rc = libusb_submit_transfer(xfer->xfer);
628 if (rc != 0) {
629 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
630 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
631 if (rc == LIBUSB_ERROR_NO_DEVICE) {
632 disconnect = true;
633 }
634 break;
635 }
636 if (QTAILQ_EMPTY(&ring->inflight)) {
637 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
638 }
639 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
640 }
641
642 if (disconnect) {
643 usb_host_nodev(s);
644 }
645 }
646
647 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
648 {
649 USBHostIsoRing *ring;
650 USBHostIsoXfer *xfer;
651 bool disconnect = false;
652 int rc, filled = 0;
653
654 ring = usb_host_iso_find(s, p->ep);
655 if (ring == NULL) {
656 ring = usb_host_iso_alloc(s, p->ep);
657 }
658
659 /* copy data from guest */
660 xfer = QTAILQ_FIRST(&ring->copy);
661 while (xfer != NULL && xfer->copy_complete) {
662 filled++;
663 xfer = QTAILQ_NEXT(xfer, next);
664 }
665 if (xfer == NULL) {
666 xfer = QTAILQ_FIRST(&ring->unused);
667 if (xfer == NULL) {
668 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
669 return;
670 }
671 QTAILQ_REMOVE(&ring->unused, xfer, next);
672 usb_host_iso_reset_xfer(xfer);
673 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
674 }
675 usb_host_iso_data_copy(xfer, p);
676
677 if (QTAILQ_EMPTY(&ring->inflight)) {
678 /* wait until half of our buffers are filled
679 before kicking the iso out stream */
680 if (filled*2 < s->iso_urb_count) {
681 return;
682 }
683 }
684
685 /* submit filled bufs to host */
686 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
687 xfer->copy_complete) {
688 QTAILQ_REMOVE(&ring->copy, xfer, next);
689 rc = libusb_submit_transfer(xfer->xfer);
690 if (rc != 0) {
691 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
692 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
693 if (rc == LIBUSB_ERROR_NO_DEVICE) {
694 disconnect = true;
695 }
696 break;
697 }
698 if (QTAILQ_EMPTY(&ring->inflight)) {
699 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
700 }
701 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
702 }
703
704 if (disconnect) {
705 usb_host_nodev(s);
706 }
707 }
708
709 /* ------------------------------------------------------------------------ */
710
711 static void usb_host_speed_compat(USBHostDevice *s)
712 {
713 USBDevice *udev = USB_DEVICE(s);
714 struct libusb_config_descriptor *conf;
715 const struct libusb_interface_descriptor *intf;
716 const struct libusb_endpoint_descriptor *endp;
717 #ifdef HAVE_STREAMS
718 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
719 #endif
720 bool compat_high = true;
721 bool compat_full = true;
722 uint8_t type;
723 int rc, c, i, a, e;
724
725 for (c = 0;; c++) {
726 rc = libusb_get_config_descriptor(s->dev, c, &conf);
727 if (rc != 0) {
728 break;
729 }
730 for (i = 0; i < conf->bNumInterfaces; i++) {
731 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
732 intf = &conf->interface[i].altsetting[a];
733 for (e = 0; e < intf->bNumEndpoints; e++) {
734 endp = &intf->endpoint[e];
735 type = endp->bmAttributes & 0x3;
736 switch (type) {
737 case 0x01: /* ISO */
738 compat_full = false;
739 compat_high = false;
740 break;
741 case 0x02: /* BULK */
742 #ifdef HAVE_STREAMS
743 rc = libusb_get_ss_endpoint_companion_descriptor
744 (ctx, endp, &endp_ss_comp);
745 if (rc == LIBUSB_SUCCESS) {
746 libusb_free_ss_endpoint_companion_descriptor
747 (endp_ss_comp);
748 compat_full = false;
749 compat_high = false;
750 }
751 #endif
752 break;
753 case 0x03: /* INTERRUPT */
754 if (endp->wMaxPacketSize > 64) {
755 compat_full = false;
756 }
757 if (endp->wMaxPacketSize > 1024) {
758 compat_high = false;
759 }
760 break;
761 }
762 }
763 }
764 }
765 libusb_free_config_descriptor(conf);
766 }
767
768 udev->speedmask = (1 << udev->speed);
769 if (udev->speed == USB_SPEED_SUPER && compat_high) {
770 udev->speedmask |= USB_SPEED_MASK_HIGH;
771 }
772 if (udev->speed == USB_SPEED_SUPER && compat_full) {
773 udev->speedmask |= USB_SPEED_MASK_FULL;
774 }
775 if (udev->speed == USB_SPEED_HIGH && compat_full) {
776 udev->speedmask |= USB_SPEED_MASK_FULL;
777 }
778 }
779
780 static void usb_host_ep_update(USBHostDevice *s)
781 {
782 static const char *tname[] = {
783 [USB_ENDPOINT_XFER_CONTROL] = "control",
784 [USB_ENDPOINT_XFER_ISOC] = "isoc",
785 [USB_ENDPOINT_XFER_BULK] = "bulk",
786 [USB_ENDPOINT_XFER_INT] = "int",
787 };
788 USBDevice *udev = USB_DEVICE(s);
789 struct libusb_config_descriptor *conf;
790 const struct libusb_interface_descriptor *intf;
791 const struct libusb_endpoint_descriptor *endp;
792 #ifdef HAVE_STREAMS
793 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
794 #endif
795 uint8_t devep, type;
796 int pid, ep;
797 int rc, i, e;
798
799 usb_ep_reset(udev);
800 rc = libusb_get_active_config_descriptor(s->dev, &conf);
801 if (rc != 0) {
802 return;
803 }
804 trace_usb_host_parse_config(s->bus_num, s->addr,
805 conf->bConfigurationValue, true);
806
807 for (i = 0; i < conf->bNumInterfaces; i++) {
808 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
809 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
810 trace_usb_host_parse_interface(s->bus_num, s->addr,
811 intf->bInterfaceNumber,
812 intf->bAlternateSetting, true);
813 for (e = 0; e < intf->bNumEndpoints; e++) {
814 endp = &intf->endpoint[e];
815
816 devep = endp->bEndpointAddress;
817 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
818 ep = devep & 0xf;
819 type = endp->bmAttributes & 0x3;
820
821 if (ep == 0) {
822 trace_usb_host_parse_error(s->bus_num, s->addr,
823 "invalid endpoint address");
824 return;
825 }
826 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
827 trace_usb_host_parse_error(s->bus_num, s->addr,
828 "duplicate endpoint address");
829 return;
830 }
831
832 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
833 (devep & USB_DIR_IN) ? "in" : "out",
834 tname[type], true);
835 usb_ep_set_max_packet_size(udev, pid, ep,
836 endp->wMaxPacketSize);
837 usb_ep_set_type(udev, pid, ep, type);
838 usb_ep_set_ifnum(udev, pid, ep, i);
839 usb_ep_set_halted(udev, pid, ep, 0);
840 #ifdef HAVE_STREAMS
841 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
842 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
843 &endp_ss_comp) == LIBUSB_SUCCESS) {
844 usb_ep_set_max_streams(udev, pid, ep,
845 endp_ss_comp->bmAttributes);
846 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
847 }
848 #endif
849 }
850 }
851
852 libusb_free_config_descriptor(conf);
853 }
854
855 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
856 {
857 USBDevice *udev = USB_DEVICE(s);
858 int bus_num = libusb_get_bus_number(dev);
859 int addr = libusb_get_device_address(dev);
860 int rc;
861 Error *local_err = NULL;
862
863 trace_usb_host_open_started(bus_num, addr);
864
865 if (s->dh != NULL) {
866 goto fail;
867 }
868 rc = libusb_open(dev, &s->dh);
869 if (rc != 0) {
870 goto fail;
871 }
872
873 s->dev = dev;
874 s->bus_num = bus_num;
875 s->addr = addr;
876
877 usb_host_detach_kernel(s);
878
879 libusb_get_device_descriptor(dev, &s->ddesc);
880 usb_host_get_port(s->dev, s->port, sizeof(s->port));
881
882 usb_ep_init(udev);
883 usb_host_ep_update(s);
884
885 udev->speed = speed_map[libusb_get_device_speed(dev)];
886 usb_host_speed_compat(s);
887
888 if (s->ddesc.iProduct) {
889 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
890 (unsigned char *)udev->product_desc,
891 sizeof(udev->product_desc));
892 } else {
893 snprintf(udev->product_desc, sizeof(udev->product_desc),
894 "host:%d.%d", bus_num, addr);
895 }
896
897 usb_device_attach(udev, &local_err);
898 if (local_err) {
899 error_report_err(local_err);
900 goto fail;
901 }
902
903 trace_usb_host_open_success(bus_num, addr);
904 return 0;
905
906 fail:
907 trace_usb_host_open_failure(bus_num, addr);
908 if (s->dh != NULL) {
909 usb_host_release_interfaces(s);
910 libusb_reset_device(s->dh);
911 usb_host_attach_kernel(s);
912 libusb_close(s->dh);
913 s->dh = NULL;
914 s->dev = NULL;
915 }
916 return -1;
917 }
918
919 static void usb_host_abort_xfers(USBHostDevice *s)
920 {
921 USBHostRequest *r, *rtmp;
922
923 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
924 usb_host_req_abort(r);
925 }
926 }
927
928 static int usb_host_close(USBHostDevice *s)
929 {
930 USBDevice *udev = USB_DEVICE(s);
931
932 if (s->dh == NULL) {
933 return -1;
934 }
935
936 trace_usb_host_close(s->bus_num, s->addr);
937
938 usb_host_abort_xfers(s);
939 usb_host_iso_free_all(s);
940
941 if (udev->attached) {
942 usb_device_detach(udev);
943 }
944
945 usb_host_release_interfaces(s);
946 libusb_reset_device(s->dh);
947 usb_host_attach_kernel(s);
948 libusb_close(s->dh);
949 s->dh = NULL;
950 s->dev = NULL;
951
952 usb_host_auto_check(NULL);
953 return 0;
954 }
955
956 static void usb_host_nodev_bh(void *opaque)
957 {
958 USBHostDevice *s = opaque;
959 usb_host_close(s);
960 }
961
962 static void usb_host_nodev(USBHostDevice *s)
963 {
964 if (!s->bh_nodev) {
965 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
966 }
967 qemu_bh_schedule(s->bh_nodev);
968 }
969
970 static void usb_host_exit_notifier(struct Notifier *n, void *data)
971 {
972 USBHostDevice *s = container_of(n, USBHostDevice, exit);
973
974 if (s->dh) {
975 usb_host_release_interfaces(s);
976 usb_host_attach_kernel(s);
977 }
978 }
979
980 static libusb_device *usb_host_find_ref(int bus, int addr)
981 {
982 libusb_device **devs = NULL;
983 libusb_device *ret = NULL;
984 int i, n;
985
986 if (usb_host_init() != 0) {
987 return NULL;
988 }
989 n = libusb_get_device_list(ctx, &devs);
990 for (i = 0; i < n; i++) {
991 if (libusb_get_bus_number(devs[i]) == bus &&
992 libusb_get_device_address(devs[i]) == addr) {
993 ret = libusb_ref_device(devs[i]);
994 break;
995 }
996 }
997 libusb_free_device_list(devs, 1);
998 return ret;
999 }
1000
1001 static void usb_host_realize(USBDevice *udev, Error **errp)
1002 {
1003 USBHostDevice *s = USB_HOST_DEVICE(udev);
1004 libusb_device *ldev;
1005 int rc;
1006
1007 if (s->match.vendor_id > 0xffff) {
1008 error_setg(errp, "vendorid out of range");
1009 return;
1010 }
1011 if (s->match.product_id > 0xffff) {
1012 error_setg(errp, "productid out of range");
1013 return;
1014 }
1015 if (s->match.addr > 127) {
1016 error_setg(errp, "hostaddr out of range");
1017 return;
1018 }
1019
1020 loglevel = s->loglevel;
1021 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
1022 udev->auto_attach = 0;
1023 QTAILQ_INIT(&s->requests);
1024 QTAILQ_INIT(&s->isorings);
1025
1026 if (s->match.addr && s->match.bus_num &&
1027 !s->match.vendor_id &&
1028 !s->match.product_id &&
1029 !s->match.port) {
1030 s->needs_autoscan = false;
1031 ldev = usb_host_find_ref(s->match.bus_num,
1032 s->match.addr);
1033 if (!ldev) {
1034 error_setg(errp, "failed to find host usb device %d:%d",
1035 s->match.bus_num, s->match.addr);
1036 return;
1037 }
1038 rc = usb_host_open(s, ldev);
1039 libusb_unref_device(ldev);
1040 if (rc < 0) {
1041 error_setg(errp, "failed to open host usb device %d:%d",
1042 s->match.bus_num, s->match.addr);
1043 return;
1044 }
1045 } else {
1046 s->needs_autoscan = true;
1047 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1048 usb_host_auto_check(NULL);
1049 }
1050
1051 s->exit.notify = usb_host_exit_notifier;
1052 qemu_add_exit_notifier(&s->exit);
1053 }
1054
1055 static void usb_host_instance_init(Object *obj)
1056 {
1057 USBDevice *udev = USB_DEVICE(obj);
1058 USBHostDevice *s = USB_HOST_DEVICE(udev);
1059
1060 device_add_bootindex_property(obj, &s->bootindex,
1061 "bootindex", NULL,
1062 &udev->qdev, NULL);
1063 }
1064
1065 static void usb_host_handle_destroy(USBDevice *udev)
1066 {
1067 USBHostDevice *s = USB_HOST_DEVICE(udev);
1068
1069 qemu_remove_exit_notifier(&s->exit);
1070 if (s->needs_autoscan) {
1071 QTAILQ_REMOVE(&hostdevs, s, next);
1072 }
1073 usb_host_close(s);
1074 }
1075
1076 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1077 {
1078 USBHostDevice *s = USB_HOST_DEVICE(udev);
1079 USBHostRequest *r;
1080
1081 if (p->combined) {
1082 usb_combined_packet_cancel(udev, p);
1083 return;
1084 }
1085
1086 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1087
1088 r = usb_host_req_find(s, p);
1089 if (r && r->p) {
1090 r->p = NULL; /* mark as dead */
1091 libusb_cancel_transfer(r->xfer);
1092 }
1093 }
1094
1095 static void usb_host_detach_kernel(USBHostDevice *s)
1096 {
1097 struct libusb_config_descriptor *conf;
1098 int rc, i;
1099
1100 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1101 if (rc != 0) {
1102 return;
1103 }
1104 for (i = 0; i < conf->bNumInterfaces; i++) {
1105 rc = libusb_kernel_driver_active(s->dh, i);
1106 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1107 if (rc != 1) {
1108 continue;
1109 }
1110 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1111 rc = libusb_detach_kernel_driver(s->dh, i);
1112 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1113 s->ifs[i].detached = true;
1114 }
1115 libusb_free_config_descriptor(conf);
1116 }
1117
1118 static void usb_host_attach_kernel(USBHostDevice *s)
1119 {
1120 struct libusb_config_descriptor *conf;
1121 int rc, i;
1122
1123 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1124 if (rc != 0) {
1125 return;
1126 }
1127 for (i = 0; i < conf->bNumInterfaces; i++) {
1128 if (!s->ifs[i].detached) {
1129 continue;
1130 }
1131 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1132 libusb_attach_kernel_driver(s->dh, i);
1133 s->ifs[i].detached = false;
1134 }
1135 libusb_free_config_descriptor(conf);
1136 }
1137
1138 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1139 {
1140 USBDevice *udev = USB_DEVICE(s);
1141 struct libusb_config_descriptor *conf;
1142 int rc, i;
1143
1144 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1145 udev->altsetting[i] = 0;
1146 }
1147 udev->ninterfaces = 0;
1148 udev->configuration = 0;
1149
1150 usb_host_detach_kernel(s);
1151
1152 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1153 if (rc != 0) {
1154 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1155 /* address state - ignore */
1156 return USB_RET_SUCCESS;
1157 }
1158 return USB_RET_STALL;
1159 }
1160
1161 for (i = 0; i < conf->bNumInterfaces; i++) {
1162 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1163 rc = libusb_claim_interface(s->dh, i);
1164 usb_host_libusb_error("libusb_claim_interface", rc);
1165 if (rc != 0) {
1166 return USB_RET_STALL;
1167 }
1168 s->ifs[i].claimed = true;
1169 }
1170
1171 udev->ninterfaces = conf->bNumInterfaces;
1172 udev->configuration = configuration;
1173
1174 libusb_free_config_descriptor(conf);
1175 return USB_RET_SUCCESS;
1176 }
1177
1178 static void usb_host_release_interfaces(USBHostDevice *s)
1179 {
1180 USBDevice *udev = USB_DEVICE(s);
1181 int i, rc;
1182
1183 for (i = 0; i < udev->ninterfaces; i++) {
1184 if (!s->ifs[i].claimed) {
1185 continue;
1186 }
1187 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1188 rc = libusb_release_interface(s->dh, i);
1189 usb_host_libusb_error("libusb_release_interface", rc);
1190 s->ifs[i].claimed = false;
1191 }
1192 }
1193
1194 static void usb_host_set_address(USBHostDevice *s, int addr)
1195 {
1196 USBDevice *udev = USB_DEVICE(s);
1197
1198 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1199 udev->addr = addr;
1200 }
1201
1202 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1203 {
1204 int rc;
1205
1206 trace_usb_host_set_config(s->bus_num, s->addr, config);
1207
1208 usb_host_release_interfaces(s);
1209 rc = libusb_set_configuration(s->dh, config);
1210 if (rc != 0) {
1211 usb_host_libusb_error("libusb_set_configuration", rc);
1212 p->status = USB_RET_STALL;
1213 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1214 usb_host_nodev(s);
1215 }
1216 return;
1217 }
1218 p->status = usb_host_claim_interfaces(s, config);
1219 if (p->status != USB_RET_SUCCESS) {
1220 return;
1221 }
1222 usb_host_ep_update(s);
1223 }
1224
1225 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1226 USBPacket *p)
1227 {
1228 USBDevice *udev = USB_DEVICE(s);
1229 int rc;
1230
1231 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1232
1233 usb_host_iso_free_all(s);
1234
1235 if (iface >= USB_MAX_INTERFACES) {
1236 p->status = USB_RET_STALL;
1237 return;
1238 }
1239
1240 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1241 if (rc != 0) {
1242 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1243 p->status = USB_RET_STALL;
1244 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1245 usb_host_nodev(s);
1246 }
1247 return;
1248 }
1249
1250 udev->altsetting[iface] = alt;
1251 usb_host_ep_update(s);
1252 }
1253
1254 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1255 int request, int value, int index,
1256 int length, uint8_t *data)
1257 {
1258 USBHostDevice *s = USB_HOST_DEVICE(udev);
1259 USBHostRequest *r;
1260 int rc;
1261
1262 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1263
1264 if (s->dh == NULL) {
1265 p->status = USB_RET_NODEV;
1266 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1267 return;
1268 }
1269
1270 switch (request) {
1271 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1272 usb_host_set_address(s, value);
1273 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1274 return;
1275
1276 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1277 usb_host_set_config(s, value & 0xff, p);
1278 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1279 return;
1280
1281 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1282 usb_host_set_interface(s, index, value, p);
1283 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1284 return;
1285
1286 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1287 if (value == 0) { /* clear halt */
1288 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1289 libusb_clear_halt(s->dh, index);
1290 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1291 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1292 return;
1293 }
1294 }
1295
1296 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1297 r->cbuf = data;
1298 r->clen = length;
1299 memcpy(r->buffer, udev->setup_buf, 8);
1300 if (!r->in) {
1301 memcpy(r->buffer + 8, r->cbuf, r->clen);
1302 }
1303
1304 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1305 * to work redirected to a not superspeed capable hcd */
1306 if ((udev->speedmask & USB_SPEED_MASK_SUPER) &&
1307 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1308 request == 0x8006 && value == 0x100 && index == 0) {
1309 r->usb3ep0quirk = true;
1310 }
1311
1312 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1313 usb_host_req_complete_ctrl, r,
1314 CONTROL_TIMEOUT);
1315 rc = libusb_submit_transfer(r->xfer);
1316 if (rc != 0) {
1317 p->status = USB_RET_NODEV;
1318 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1319 p->status, p->actual_length);
1320 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1321 usb_host_nodev(s);
1322 }
1323 return;
1324 }
1325
1326 p->status = USB_RET_ASYNC;
1327 }
1328
1329 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1330 {
1331 USBHostDevice *s = USB_HOST_DEVICE(udev);
1332 USBHostRequest *r;
1333 size_t size;
1334 int ep, rc;
1335
1336 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1337 p->status = USB_RET_ADD_TO_QUEUE;
1338 return;
1339 }
1340
1341 trace_usb_host_req_data(s->bus_num, s->addr, p,
1342 p->pid == USB_TOKEN_IN,
1343 p->ep->nr, p->iov.size);
1344
1345 if (s->dh == NULL) {
1346 p->status = USB_RET_NODEV;
1347 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1348 return;
1349 }
1350 if (p->ep->halted) {
1351 p->status = USB_RET_STALL;
1352 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1353 return;
1354 }
1355
1356 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1357 case USB_ENDPOINT_XFER_BULK:
1358 size = usb_packet_size(p);
1359 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1360 if (!r->in) {
1361 usb_packet_copy(p, r->buffer, size);
1362 }
1363 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1364 if (p->stream) {
1365 #ifdef HAVE_STREAMS
1366 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1367 r->buffer, size,
1368 usb_host_req_complete_data, r,
1369 BULK_TIMEOUT);
1370 #else
1371 usb_host_req_free(r);
1372 p->status = USB_RET_STALL;
1373 return;
1374 #endif
1375 } else {
1376 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1377 r->buffer, size,
1378 usb_host_req_complete_data, r,
1379 BULK_TIMEOUT);
1380 }
1381 break;
1382 case USB_ENDPOINT_XFER_INT:
1383 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1384 if (!r->in) {
1385 usb_packet_copy(p, r->buffer, p->iov.size);
1386 }
1387 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1388 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1389 r->buffer, p->iov.size,
1390 usb_host_req_complete_data, r,
1391 INTR_TIMEOUT);
1392 break;
1393 case USB_ENDPOINT_XFER_ISOC:
1394 if (p->pid == USB_TOKEN_IN) {
1395 usb_host_iso_data_in(s, p);
1396 } else {
1397 usb_host_iso_data_out(s, p);
1398 }
1399 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1400 p->status, p->actual_length);
1401 return;
1402 default:
1403 p->status = USB_RET_STALL;
1404 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1405 p->status, p->actual_length);
1406 return;
1407 }
1408
1409 rc = libusb_submit_transfer(r->xfer);
1410 if (rc != 0) {
1411 p->status = USB_RET_NODEV;
1412 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1413 p->status, p->actual_length);
1414 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1415 usb_host_nodev(s);
1416 }
1417 return;
1418 }
1419
1420 p->status = USB_RET_ASYNC;
1421 }
1422
1423 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1424 {
1425 if (usb_host_use_combining(ep)) {
1426 usb_ep_combine_input_packets(ep);
1427 }
1428 }
1429
1430 static void usb_host_handle_reset(USBDevice *udev)
1431 {
1432 USBHostDevice *s = USB_HOST_DEVICE(udev);
1433 int rc;
1434
1435 trace_usb_host_reset(s->bus_num, s->addr);
1436
1437 rc = libusb_reset_device(s->dh);
1438 if (rc != 0) {
1439 usb_host_nodev(s);
1440 }
1441 }
1442
1443 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1444 int nr_eps, int streams)
1445 {
1446 #ifdef HAVE_STREAMS
1447 USBHostDevice *s = USB_HOST_DEVICE(udev);
1448 unsigned char endpoints[30];
1449 int i, rc;
1450
1451 for (i = 0; i < nr_eps; i++) {
1452 endpoints[i] = eps[i]->nr;
1453 if (eps[i]->pid == USB_TOKEN_IN) {
1454 endpoints[i] |= 0x80;
1455 }
1456 }
1457 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1458 if (rc < 0) {
1459 usb_host_libusb_error("libusb_alloc_streams", rc);
1460 } else if (rc != streams) {
1461 error_report("libusb_alloc_streams: got less streams "
1462 "then requested %d < %d", rc, streams);
1463 }
1464
1465 return (rc == streams) ? 0 : -1;
1466 #else
1467 error_report("libusb_alloc_streams: error not implemented");
1468 return -1;
1469 #endif
1470 }
1471
1472 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1473 int nr_eps)
1474 {
1475 #ifdef HAVE_STREAMS
1476 USBHostDevice *s = USB_HOST_DEVICE(udev);
1477 unsigned char endpoints[30];
1478 int i;
1479
1480 for (i = 0; i < nr_eps; i++) {
1481 endpoints[i] = eps[i]->nr;
1482 if (eps[i]->pid == USB_TOKEN_IN) {
1483 endpoints[i] |= 0x80;
1484 }
1485 }
1486 libusb_free_streams(s->dh, endpoints, nr_eps);
1487 #endif
1488 }
1489
1490 /*
1491 * This is *NOT* about restoring state. We have absolutely no idea
1492 * what state the host device is in at the moment and whenever it is
1493 * still present in the first place. Attemping to contine where we
1494 * left off is impossible.
1495 *
1496 * What we are going to do here is emulate a surprise removal of
1497 * the usb device passed through, then kick host scan so the device
1498 * will get re-attached (and re-initialized by the guest) in case it
1499 * is still present.
1500 *
1501 * As the device removal will change the state of other devices (usb
1502 * host controller, most likely interrupt controller too) we have to
1503 * wait with it until *all* vmstate is loaded. Thus post_load just
1504 * kicks a bottom half which then does the actual work.
1505 */
1506 static void usb_host_post_load_bh(void *opaque)
1507 {
1508 USBHostDevice *dev = opaque;
1509 USBDevice *udev = USB_DEVICE(dev);
1510
1511 if (dev->dh != NULL) {
1512 usb_host_close(dev);
1513 }
1514 if (udev->attached) {
1515 usb_device_detach(udev);
1516 }
1517 usb_host_auto_check(NULL);
1518 }
1519
1520 static int usb_host_post_load(void *opaque, int version_id)
1521 {
1522 USBHostDevice *dev = opaque;
1523
1524 if (!dev->bh_postld) {
1525 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1526 }
1527 qemu_bh_schedule(dev->bh_postld);
1528 return 0;
1529 }
1530
1531 static const VMStateDescription vmstate_usb_host = {
1532 .name = "usb-host",
1533 .version_id = 1,
1534 .minimum_version_id = 1,
1535 .post_load = usb_host_post_load,
1536 .fields = (VMStateField[]) {
1537 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1538 VMSTATE_END_OF_LIST()
1539 }
1540 };
1541
1542 static Property usb_host_dev_properties[] = {
1543 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1544 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1545 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1546 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1547 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1548 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1549 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1550 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1551 LIBUSB_LOG_LEVEL_WARNING),
1552 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1553 USB_HOST_OPT_PIPELINE, true),
1554 DEFINE_PROP_END_OF_LIST(),
1555 };
1556
1557 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1558 {
1559 DeviceClass *dc = DEVICE_CLASS(klass);
1560 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1561
1562 uc->realize = usb_host_realize;
1563 uc->product_desc = "USB Host Device";
1564 uc->cancel_packet = usb_host_cancel_packet;
1565 uc->handle_data = usb_host_handle_data;
1566 uc->handle_control = usb_host_handle_control;
1567 uc->handle_reset = usb_host_handle_reset;
1568 uc->handle_destroy = usb_host_handle_destroy;
1569 uc->flush_ep_queue = usb_host_flush_ep_queue;
1570 uc->alloc_streams = usb_host_alloc_streams;
1571 uc->free_streams = usb_host_free_streams;
1572 dc->vmsd = &vmstate_usb_host;
1573 dc->props = usb_host_dev_properties;
1574 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1575 }
1576
1577 static TypeInfo usb_host_dev_info = {
1578 .name = TYPE_USB_HOST_DEVICE,
1579 .parent = TYPE_USB_DEVICE,
1580 .instance_size = sizeof(USBHostDevice),
1581 .class_init = usb_host_class_initfn,
1582 .instance_init = usb_host_instance_init,
1583 };
1584
1585 static void usb_host_register_types(void)
1586 {
1587 type_register_static(&usb_host_dev_info);
1588 }
1589
1590 type_init(usb_host_register_types)
1591
1592 /* ------------------------------------------------------------------------ */
1593
1594 static QEMUTimer *usb_auto_timer;
1595 static VMChangeStateEntry *usb_vmstate;
1596
1597 static void usb_host_vm_state(void *unused, int running, RunState state)
1598 {
1599 if (running) {
1600 usb_host_auto_check(unused);
1601 }
1602 }
1603
1604 static void usb_host_auto_check(void *unused)
1605 {
1606 struct USBHostDevice *s;
1607 struct USBAutoFilter *f;
1608 libusb_device **devs = NULL;
1609 struct libusb_device_descriptor ddesc;
1610 int unconnected = 0;
1611 int i, n;
1612
1613 if (usb_host_init() != 0) {
1614 return;
1615 }
1616
1617 if (runstate_is_running()) {
1618 n = libusb_get_device_list(ctx, &devs);
1619 for (i = 0; i < n; i++) {
1620 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1621 continue;
1622 }
1623 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1624 continue;
1625 }
1626 QTAILQ_FOREACH(s, &hostdevs, next) {
1627 f = &s->match;
1628 if (f->bus_num > 0 &&
1629 f->bus_num != libusb_get_bus_number(devs[i])) {
1630 continue;
1631 }
1632 if (f->addr > 0 &&
1633 f->addr != libusb_get_device_address(devs[i])) {
1634 continue;
1635 }
1636 if (f->port != NULL) {
1637 char port[16] = "-";
1638 usb_host_get_port(devs[i], port, sizeof(port));
1639 if (strcmp(f->port, port) != 0) {
1640 continue;
1641 }
1642 }
1643 if (f->vendor_id > 0 &&
1644 f->vendor_id != ddesc.idVendor) {
1645 continue;
1646 }
1647 if (f->product_id > 0 &&
1648 f->product_id != ddesc.idProduct) {
1649 continue;
1650 }
1651
1652 /* We got a match */
1653 s->seen++;
1654 if (s->errcount >= 3) {
1655 continue;
1656 }
1657 if (s->dh != NULL) {
1658 continue;
1659 }
1660 if (usb_host_open(s, devs[i]) < 0) {
1661 s->errcount++;
1662 continue;
1663 }
1664 break;
1665 }
1666 }
1667 libusb_free_device_list(devs, 1);
1668
1669 QTAILQ_FOREACH(s, &hostdevs, next) {
1670 if (s->dh == NULL) {
1671 unconnected++;
1672 }
1673 if (s->seen == 0) {
1674 if (s->dh) {
1675 usb_host_close(s);
1676 }
1677 s->errcount = 0;
1678 }
1679 s->seen = 0;
1680 }
1681
1682 #if 0
1683 if (unconnected == 0) {
1684 /* nothing to watch */
1685 if (usb_auto_timer) {
1686 timer_del(usb_auto_timer);
1687 trace_usb_host_auto_scan_disabled();
1688 }
1689 return;
1690 }
1691 #endif
1692 }
1693
1694 if (!usb_vmstate) {
1695 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1696 }
1697 if (!usb_auto_timer) {
1698 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1699 if (!usb_auto_timer) {
1700 return;
1701 }
1702 trace_usb_host_auto_scan_enabled();
1703 }
1704 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1705 }
1706
1707 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1708 {
1709 libusb_device **devs = NULL;
1710 struct libusb_device_descriptor ddesc;
1711 char port[16];
1712 int i, n;
1713
1714 if (usb_host_init() != 0) {
1715 return;
1716 }
1717
1718 n = libusb_get_device_list(ctx, &devs);
1719 for (i = 0; i < n; i++) {
1720 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1721 continue;
1722 }
1723 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1724 continue;
1725 }
1726 usb_host_get_port(devs[i], port, sizeof(port));
1727 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1728 libusb_get_bus_number(devs[i]),
1729 libusb_get_device_address(devs[i]),
1730 port,
1731 speed_name[libusb_get_device_speed(devs[i])]);
1732 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1733 monitor_printf(mon, " USB device %04x:%04x",
1734 ddesc.idVendor, ddesc.idProduct);
1735 if (ddesc.iProduct) {
1736 libusb_device_handle *handle;
1737 if (libusb_open(devs[i], &handle) == 0) {
1738 unsigned char name[64] = "";
1739 libusb_get_string_descriptor_ascii(handle,
1740 ddesc.iProduct,
1741 name, sizeof(name));
1742 libusb_close(handle);
1743 monitor_printf(mon, ", %s", name);
1744 }
1745 }
1746 monitor_printf(mon, "\n");
1747 }
1748 libusb_free_device_list(devs, 1);
1749 }
AR7 emulation for QEMU