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target-mips: copy CP0_Config1 into DisasContext
[qemu/ar7.git] / hw / usb / host-libusb.c
blob33b5b9ff19c734a666c1af6c7cbc694e5697f2bc
1 /*
2 * Linux host USB redirector
3 *
4 * Copyright (c) 2005 Fabrice Bellard
5 *
6 * Copyright (c) 2008 Max Krasnyansky
7 * Support for host device auto connect & disconnect
8 * Major rewrite to support fully async operation
9 *
10 * Copyright 2008 TJ <linux@tjworld.net>
11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
12 * to the legacy /proc/bus/usb USB device discovery and handling
13 *
14 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com>
15 * Completely rewritten to use libusb instead of usbfs ioctls.
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining a copy
18 * of this software and associated documentation files (the "Software"), to deal
19 * in the Software without restriction, including without limitation the rights
20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
21 * copies of the Software, and to permit persons to whom the Software is
22 * furnished to do so, subject to the following conditions:
23 *
24 * The above copyright notice and this permission notice shall be included in
25 * all copies or substantial portions of the Software.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
33 * THE SOFTWARE.
34 */
35
36 #include <poll.h>
37 #include <libusb.h>
38
39 #include "qemu-common.h"
40 #include "monitor/monitor.h"
41 #include "sysemu/sysemu.h"
42 #include "trace.h"
43
44 #include "hw/usb.h"
45
46 /* ------------------------------------------------------------------------ */
47
48 #define TYPE_USB_HOST_DEVICE "usb-host"
49 #define USB_HOST_DEVICE(obj) \
50 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE)
51
52 typedef struct USBHostDevice USBHostDevice;
53 typedef struct USBHostRequest USBHostRequest;
54 typedef struct USBHostIsoXfer USBHostIsoXfer;
55 typedef struct USBHostIsoRing USBHostIsoRing;
56
57 struct USBAutoFilter {
58 uint32_t bus_num;
59 uint32_t addr;
60 char *port;
61 uint32_t vendor_id;
62 uint32_t product_id;
63 };
64
65 enum USBHostDeviceOptions {
66 USB_HOST_OPT_PIPELINE,
67 };
68
69 struct USBHostDevice {
70 USBDevice parent_obj;
71
72 /* properties */
73 struct USBAutoFilter match;
74 int32_t bootindex;
75 uint32_t iso_urb_count;
76 uint32_t iso_urb_frames;
77 uint32_t options;
78 uint32_t loglevel;
79
80 /* state */
81 QTAILQ_ENTRY(USBHostDevice) next;
82 int seen, errcount;
83 int bus_num;
84 int addr;
85 char port[16];
86
87 libusb_device *dev;
88 libusb_device_handle *dh;
89 struct libusb_device_descriptor ddesc;
90
91 struct {
92 bool detached;
93 bool claimed;
94 } ifs[USB_MAX_INTERFACES];
95
96 /* callbacks & friends */
97 QEMUBH *bh_nodev;
98 QEMUBH *bh_postld;
99 Notifier exit;
100
101 /* request queues */
102 QTAILQ_HEAD(, USBHostRequest) requests;
103 QTAILQ_HEAD(, USBHostIsoRing) isorings;
104 };
105
106 struct USBHostRequest {
107 USBHostDevice *host;
108 USBPacket *p;
109 bool in;
110 struct libusb_transfer *xfer;
111 unsigned char *buffer;
112 unsigned char *cbuf;
113 unsigned int clen;
114 bool usb3ep0quirk;
115 QTAILQ_ENTRY(USBHostRequest) next;
116 };
117
118 struct USBHostIsoXfer {
119 USBHostIsoRing *ring;
120 struct libusb_transfer *xfer;
121 bool copy_complete;
122 unsigned int packet;
123 QTAILQ_ENTRY(USBHostIsoXfer) next;
124 };
125
126 struct USBHostIsoRing {
127 USBHostDevice *host;
128 USBEndpoint *ep;
129 QTAILQ_HEAD(, USBHostIsoXfer) unused;
130 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
131 QTAILQ_HEAD(, USBHostIsoXfer) copy;
132 QTAILQ_ENTRY(USBHostIsoRing) next;
133 };
134
135 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
136 QTAILQ_HEAD_INITIALIZER(hostdevs);
137
138 static void usb_host_auto_check(void *unused);
139 static void usb_host_release_interfaces(USBHostDevice *s);
140 static void usb_host_nodev(USBHostDevice *s);
141 static void usb_host_detach_kernel(USBHostDevice *s);
142 static void usb_host_attach_kernel(USBHostDevice *s);
143
144 /* ------------------------------------------------------------------------ */
145
146 #define CONTROL_TIMEOUT 10000 /* 10 sec */
147 #define BULK_TIMEOUT 0 /* unlimited */
148 #define INTR_TIMEOUT 0 /* unlimited */
149
150 #if LIBUSBX_API_VERSION >= 0x01000103
151 # define HAVE_STREAMS 1
152 #endif
153
154 static const char *speed_name[] = {
155 [LIBUSB_SPEED_UNKNOWN] = "?",
156 [LIBUSB_SPEED_LOW] = "1.5",
157 [LIBUSB_SPEED_FULL] = "12",
158 [LIBUSB_SPEED_HIGH] = "480",
159 [LIBUSB_SPEED_SUPER] = "5000",
160 };
161
162 static const unsigned int speed_map[] = {
163 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
164 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
165 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
166 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
167 };
168
169 static const unsigned int status_map[] = {
170 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
171 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
172 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
173 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
174 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
175 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
176 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
177 };
178
179 static const char *err_names[] = {
180 [-LIBUSB_ERROR_IO] = "IO",
181 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
182 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
183 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
184 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
185 [-LIBUSB_ERROR_BUSY] = "BUSY",
186 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
187 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
188 [-LIBUSB_ERROR_PIPE] = "PIPE",
189 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
190 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
191 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
192 [-LIBUSB_ERROR_OTHER] = "OTHER",
193 };
194
195 static libusb_context *ctx;
196 static uint32_t loglevel;
197
198 static void usb_host_handle_fd(void *opaque)
199 {
200 struct timeval tv = { 0, 0 };
201 libusb_handle_events_timeout(ctx, &tv);
202 }
203
204 static void usb_host_add_fd(int fd, short events, void *user_data)
205 {
206 qemu_set_fd_handler(fd,
207 (events & POLLIN) ? usb_host_handle_fd : NULL,
208 (events & POLLOUT) ? usb_host_handle_fd : NULL,
209 ctx);
210 }
211
212 static void usb_host_del_fd(int fd, void *user_data)
213 {
214 qemu_set_fd_handler(fd, NULL, NULL, NULL);
215 }
216
217 static int usb_host_init(void)
218 {
219 const struct libusb_pollfd **poll;
220 int i, rc;
221
222 if (ctx) {
223 return 0;
224 }
225 rc = libusb_init(&ctx);
226 if (rc != 0) {
227 return -1;
228 }
229 libusb_set_debug(ctx, loglevel);
230
231 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
232 usb_host_del_fd,
233 ctx);
234 poll = libusb_get_pollfds(ctx);
235 if (poll) {
236 for (i = 0; poll[i] != NULL; i++) {
237 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
238 }
239 }
240 free(poll);
241 return 0;
242 }
243
244 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
245 {
246 uint8_t path[7];
247 size_t off;
248 int rc, i;
249
250 #if LIBUSBX_API_VERSION >= 0x01000102
251 rc = libusb_get_port_numbers(dev, path, 7);
252 #else
253 rc = libusb_get_port_path(ctx, dev, path, 7);
254 #endif
255 if (rc < 0) {
256 return 0;
257 }
258 off = snprintf(port, len, "%d", path[0]);
259 for (i = 1; i < rc; i++) {
260 off += snprintf(port+off, len-off, ".%d", path[i]);
261 }
262 return off;
263 }
264
265 static void usb_host_libusb_error(const char *func, int rc)
266 {
267 const char *errname;
268
269 if (rc >= 0) {
270 return;
271 }
272
273 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
274 errname = err_names[-rc];
275 } else {
276 errname = "?";
277 }
278 fprintf(stderr, "%s: %d [%s]\n", func, rc, errname);
279 }
280
281 /* ------------------------------------------------------------------------ */
282
283 static bool usb_host_use_combining(USBEndpoint *ep)
284 {
285 int type;
286
287 if (!ep->pipeline) {
288 return false;
289 }
290 if (ep->pid != USB_TOKEN_IN) {
291 return false;
292 }
293 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
294 if (type != USB_ENDPOINT_XFER_BULK) {
295 return false;
296 }
297 return true;
298 }
299
300 /* ------------------------------------------------------------------------ */
301
302 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
303 bool in, size_t bufsize)
304 {
305 USBHostRequest *r = g_new0(USBHostRequest, 1);
306
307 r->host = s;
308 r->p = p;
309 r->in = in;
310 r->xfer = libusb_alloc_transfer(0);
311 if (bufsize) {
312 r->buffer = g_malloc(bufsize);
313 }
314 QTAILQ_INSERT_TAIL(&s->requests, r, next);
315 return r;
316 }
317
318 static void usb_host_req_free(USBHostRequest *r)
319 {
320 if (r->host) {
321 QTAILQ_REMOVE(&r->host->requests, r, next);
322 }
323 libusb_free_transfer(r->xfer);
324 g_free(r->buffer);
325 g_free(r);
326 }
327
328 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
329 {
330 USBHostRequest *r;
331
332 QTAILQ_FOREACH(r, &s->requests, next) {
333 if (r->p == p) {
334 return r;
335 }
336 }
337 return NULL;
338 }
339
340 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
341 {
342 USBHostRequest *r = xfer->user_data;
343 USBHostDevice *s = r->host;
344 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
345
346 if (r->p == NULL) {
347 goto out; /* request was canceled */
348 }
349
350 r->p->status = status_map[xfer->status];
351 r->p->actual_length = xfer->actual_length;
352 if (r->in && xfer->actual_length) {
353 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
354
355 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
356 * to work redirected to a not superspeed capable hcd */
357 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
358 r->cbuf[7] == 9) {
359 r->cbuf[7] = 64;
360 }
361 }
362 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
363 r->p->status, r->p->actual_length);
364 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
365
366 out:
367 usb_host_req_free(r);
368 if (disconnect) {
369 usb_host_nodev(s);
370 }
371 }
372
373 static void usb_host_req_complete_data(struct libusb_transfer *xfer)
374 {
375 USBHostRequest *r = xfer->user_data;
376 USBHostDevice *s = r->host;
377 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
378
379 if (r->p == NULL) {
380 goto out; /* request was canceled */
381 }
382
383 r->p->status = status_map[xfer->status];
384 if (r->in && xfer->actual_length) {
385 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
386 }
387 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
388 r->p->status, r->p->actual_length);
389 if (usb_host_use_combining(r->p->ep)) {
390 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
391 } else {
392 usb_packet_complete(USB_DEVICE(s), r->p);
393 }
394
395 out:
396 usb_host_req_free(r);
397 if (disconnect) {
398 usb_host_nodev(s);
399 }
400 }
401
402 static void usb_host_req_abort(USBHostRequest *r)
403 {
404 USBHostDevice *s = r->host;
405 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
406
407 if (inflight) {
408 r->p->status = USB_RET_NODEV;
409 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
410 r->p->status, r->p->actual_length);
411 if (r->p->ep->nr == 0) {
412 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
413 } else {
414 usb_packet_complete(USB_DEVICE(s), r->p);
415 }
416 r->p = NULL;
417 }
418
419 QTAILQ_REMOVE(&r->host->requests, r, next);
420 r->host = NULL;
421
422 if (inflight) {
423 libusb_cancel_transfer(r->xfer);
424 }
425 }
426
427 /* ------------------------------------------------------------------------ */
428
429 static void usb_host_req_complete_iso(struct libusb_transfer *transfer)
430 {
431 USBHostIsoXfer *xfer = transfer->user_data;
432
433 if (!xfer) {
434 /* USBHostIsoXfer released while inflight */
435 g_free(transfer->buffer);
436 libusb_free_transfer(transfer);
437 return;
438 }
439
440 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
441 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
442 USBHostDevice *s = xfer->ring->host;
443 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
444 }
445 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
446 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
447 } else {
448 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
449 }
450 }
451
452 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
453 {
454 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
455 USBHostIsoXfer *xfer;
456 /* FIXME: check interval (for now assume one xfer per frame) */
457 int packets = s->iso_urb_frames;
458 int i;
459
460 ring->host = s;
461 ring->ep = ep;
462 QTAILQ_INIT(&ring->unused);
463 QTAILQ_INIT(&ring->inflight);
464 QTAILQ_INIT(&ring->copy);
465 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
466
467 for (i = 0; i < s->iso_urb_count; i++) {
468 xfer = g_new0(USBHostIsoXfer, 1);
469 xfer->ring = ring;
470 xfer->xfer = libusb_alloc_transfer(packets);
471 xfer->xfer->dev_handle = s->dh;
472 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
473
474 xfer->xfer->endpoint = ring->ep->nr;
475 if (ring->ep->pid == USB_TOKEN_IN) {
476 xfer->xfer->endpoint |= USB_DIR_IN;
477 }
478 xfer->xfer->callback = usb_host_req_complete_iso;
479 xfer->xfer->user_data = xfer;
480
481 xfer->xfer->num_iso_packets = packets;
482 xfer->xfer->length = ring->ep->max_packet_size * packets;
483 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
484
485 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
486 }
487
488 return ring;
489 }
490
491 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
492 {
493 USBHostIsoRing *ring;
494
495 QTAILQ_FOREACH(ring, &s->isorings, next) {
496 if (ring->ep == ep) {
497 return ring;
498 }
499 }
500 return NULL;
501 }
502
503 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
504 {
505 libusb_set_iso_packet_lengths(xfer->xfer,
506 xfer->ring->ep->max_packet_size);
507 xfer->packet = 0;
508 xfer->copy_complete = false;
509 }
510
511 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
512 {
513 if (inflight) {
514 xfer->xfer->user_data = NULL;
515 } else {
516 g_free(xfer->xfer->buffer);
517 libusb_free_transfer(xfer->xfer);
518 }
519 g_free(xfer);
520 }
521
522 static void usb_host_iso_free(USBHostIsoRing *ring)
523 {
524 USBHostIsoXfer *xfer;
525
526 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
527 QTAILQ_REMOVE(&ring->inflight, xfer, next);
528 usb_host_iso_free_xfer(xfer, true);
529 }
530 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
531 QTAILQ_REMOVE(&ring->unused, xfer, next);
532 usb_host_iso_free_xfer(xfer, false);
533 }
534 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
535 QTAILQ_REMOVE(&ring->copy, xfer, next);
536 usb_host_iso_free_xfer(xfer, false);
537 }
538
539 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
540 g_free(ring);
541 }
542
543 static void usb_host_iso_free_all(USBHostDevice *s)
544 {
545 USBHostIsoRing *ring;
546
547 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
548 usb_host_iso_free(ring);
549 }
550 }
551
552 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
553 {
554 unsigned int psize;
555 unsigned char *buf;
556
557 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
558 if (p->pid == USB_TOKEN_OUT) {
559 psize = p->iov.size;
560 if (psize > xfer->ring->ep->max_packet_size) {
561 /* should not happen (guest bug) */
562 psize = xfer->ring->ep->max_packet_size;
563 }
564 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
565 } else {
566 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
567 if (psize > p->iov.size) {
568 /* should not happen (guest bug) */
569 psize = p->iov.size;
570 }
571 }
572 usb_packet_copy(p, buf, psize);
573 xfer->packet++;
574 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
575 return xfer->copy_complete;
576 }
577
578 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
579 {
580 USBHostIsoRing *ring;
581 USBHostIsoXfer *xfer;
582 bool disconnect = false;
583 int rc;
584
585 ring = usb_host_iso_find(s, p->ep);
586 if (ring == NULL) {
587 ring = usb_host_iso_alloc(s, p->ep);
588 }
589
590 /* copy data to guest */
591 xfer = QTAILQ_FIRST(&ring->copy);
592 if (xfer != NULL) {
593 if (usb_host_iso_data_copy(xfer, p)) {
594 QTAILQ_REMOVE(&ring->copy, xfer, next);
595 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
596 }
597 }
598
599 /* submit empty bufs to host */
600 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
601 QTAILQ_REMOVE(&ring->unused, xfer, next);
602 usb_host_iso_reset_xfer(xfer);
603 rc = libusb_submit_transfer(xfer->xfer);
604 if (rc != 0) {
605 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
606 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
607 if (rc == LIBUSB_ERROR_NO_DEVICE) {
608 disconnect = true;
609 }
610 break;
611 }
612 if (QTAILQ_EMPTY(&ring->inflight)) {
613 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
614 }
615 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
616 }
617
618 if (disconnect) {
619 usb_host_nodev(s);
620 }
621 }
622
623 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
624 {
625 USBHostIsoRing *ring;
626 USBHostIsoXfer *xfer;
627 bool disconnect = false;
628 int rc, filled = 0;
629
630 ring = usb_host_iso_find(s, p->ep);
631 if (ring == NULL) {
632 ring = usb_host_iso_alloc(s, p->ep);
633 }
634
635 /* copy data from guest */
636 xfer = QTAILQ_FIRST(&ring->copy);
637 while (xfer != NULL && xfer->copy_complete) {
638 filled++;
639 xfer = QTAILQ_NEXT(xfer, next);
640 }
641 if (xfer == NULL) {
642 xfer = QTAILQ_FIRST(&ring->unused);
643 if (xfer == NULL) {
644 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
645 return;
646 }
647 QTAILQ_REMOVE(&ring->unused, xfer, next);
648 usb_host_iso_reset_xfer(xfer);
649 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
650 }
651 usb_host_iso_data_copy(xfer, p);
652
653 if (QTAILQ_EMPTY(&ring->inflight)) {
654 /* wait until half of our buffers are filled
655 before kicking the iso out stream */
656 if (filled*2 < s->iso_urb_count) {
657 return;
658 }
659 }
660
661 /* submit filled bufs to host */
662 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
663 xfer->copy_complete) {
664 QTAILQ_REMOVE(&ring->copy, xfer, next);
665 rc = libusb_submit_transfer(xfer->xfer);
666 if (rc != 0) {
667 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
668 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
669 if (rc == LIBUSB_ERROR_NO_DEVICE) {
670 disconnect = true;
671 }
672 break;
673 }
674 if (QTAILQ_EMPTY(&ring->inflight)) {
675 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
676 }
677 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
678 }
679
680 if (disconnect) {
681 usb_host_nodev(s);
682 }
683 }
684
685 /* ------------------------------------------------------------------------ */
686
687 static void usb_host_speed_compat(USBHostDevice *s)
688 {
689 USBDevice *udev = USB_DEVICE(s);
690 struct libusb_config_descriptor *conf;
691 const struct libusb_interface_descriptor *intf;
692 const struct libusb_endpoint_descriptor *endp;
693 #ifdef HAVE_STREAMS
694 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
695 #endif
696 bool compat_high = true;
697 bool compat_full = true;
698 uint8_t type;
699 int rc, c, i, a, e;
700
701 for (c = 0;; c++) {
702 rc = libusb_get_config_descriptor(s->dev, c, &conf);
703 if (rc != 0) {
704 break;
705 }
706 for (i = 0; i < conf->bNumInterfaces; i++) {
707 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
708 intf = &conf->interface[i].altsetting[a];
709 for (e = 0; e < intf->bNumEndpoints; e++) {
710 endp = &intf->endpoint[e];
711 type = endp->bmAttributes & 0x3;
712 switch (type) {
713 case 0x01: /* ISO */
714 compat_full = false;
715 compat_high = false;
716 break;
717 case 0x02: /* BULK */
718 #ifdef HAVE_STREAMS
719 rc = libusb_get_ss_endpoint_companion_descriptor
720 (ctx, endp, &endp_ss_comp);
721 if (rc == LIBUSB_SUCCESS) {
722 libusb_free_ss_endpoint_companion_descriptor
723 (endp_ss_comp);
724 compat_full = false;
725 compat_high = false;
726 }
727 #endif
728 break;
729 case 0x03: /* INTERRUPT */
730 if (endp->wMaxPacketSize > 64) {
731 compat_full = false;
732 }
733 if (endp->wMaxPacketSize > 1024) {
734 compat_high = false;
735 }
736 break;
737 }
738 }
739 }
740 }
741 libusb_free_config_descriptor(conf);
742 }
743
744 udev->speedmask = (1 << udev->speed);
745 if (udev->speed == USB_SPEED_SUPER && compat_high) {
746 udev->speedmask |= USB_SPEED_HIGH;
747 }
748 if (udev->speed == USB_SPEED_SUPER && compat_full) {
749 udev->speedmask |= USB_SPEED_FULL;
750 }
751 if (udev->speed == USB_SPEED_HIGH && compat_full) {
752 udev->speedmask |= USB_SPEED_FULL;
753 }
754 }
755
756 static void usb_host_ep_update(USBHostDevice *s)
757 {
758 static const char *tname[] = {
759 [USB_ENDPOINT_XFER_CONTROL] = "control",
760 [USB_ENDPOINT_XFER_ISOC] = "isoc",
761 [USB_ENDPOINT_XFER_BULK] = "bulk",
762 [USB_ENDPOINT_XFER_INT] = "int",
763 };
764 USBDevice *udev = USB_DEVICE(s);
765 struct libusb_config_descriptor *conf;
766 const struct libusb_interface_descriptor *intf;
767 const struct libusb_endpoint_descriptor *endp;
768 #ifdef HAVE_STREAMS
769 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
770 #endif
771 uint8_t devep, type;
772 int pid, ep;
773 int rc, i, e;
774
775 usb_ep_reset(udev);
776 rc = libusb_get_active_config_descriptor(s->dev, &conf);
777 if (rc != 0) {
778 return;
779 }
780 trace_usb_host_parse_config(s->bus_num, s->addr,
781 conf->bConfigurationValue, true);
782
783 for (i = 0; i < conf->bNumInterfaces; i++) {
784 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
785 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
786 trace_usb_host_parse_interface(s->bus_num, s->addr,
787 intf->bInterfaceNumber,
788 intf->bAlternateSetting, true);
789 for (e = 0; e < intf->bNumEndpoints; e++) {
790 endp = &intf->endpoint[e];
791
792 devep = endp->bEndpointAddress;
793 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
794 ep = devep & 0xf;
795 type = endp->bmAttributes & 0x3;
796
797 if (ep == 0) {
798 trace_usb_host_parse_error(s->bus_num, s->addr,
799 "invalid endpoint address");
800 return;
801 }
802 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
803 trace_usb_host_parse_error(s->bus_num, s->addr,
804 "duplicate endpoint address");
805 return;
806 }
807
808 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
809 (devep & USB_DIR_IN) ? "in" : "out",
810 tname[type], true);
811 usb_ep_set_max_packet_size(udev, pid, ep,
812 endp->wMaxPacketSize);
813 usb_ep_set_type(udev, pid, ep, type);
814 usb_ep_set_ifnum(udev, pid, ep, i);
815 usb_ep_set_halted(udev, pid, ep, 0);
816 #ifdef HAVE_STREAMS
817 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
818 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
819 &endp_ss_comp) == LIBUSB_SUCCESS) {
820 usb_ep_set_max_streams(udev, pid, ep,
821 endp_ss_comp->bmAttributes);
822 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
823 }
824 #endif
825 }
826 }
827
828 libusb_free_config_descriptor(conf);
829 }
830
831 static int usb_host_open(USBHostDevice *s, libusb_device *dev)
832 {
833 USBDevice *udev = USB_DEVICE(s);
834 int bus_num = libusb_get_bus_number(dev);
835 int addr = libusb_get_device_address(dev);
836 int rc;
837
838 trace_usb_host_open_started(bus_num, addr);
839
840 if (s->dh != NULL) {
841 goto fail;
842 }
843 rc = libusb_open(dev, &s->dh);
844 if (rc != 0) {
845 goto fail;
846 }
847
848 s->dev = dev;
849 s->bus_num = bus_num;
850 s->addr = addr;
851
852 usb_host_detach_kernel(s);
853
854 libusb_get_device_descriptor(dev, &s->ddesc);
855 usb_host_get_port(s->dev, s->port, sizeof(s->port));
856
857 usb_ep_init(udev);
858 usb_host_ep_update(s);
859
860 udev->speed = speed_map[libusb_get_device_speed(dev)];
861 usb_host_speed_compat(s);
862
863 if (s->ddesc.iProduct) {
864 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
865 (unsigned char *)udev->product_desc,
866 sizeof(udev->product_desc));
867 } else {
868 snprintf(udev->product_desc, sizeof(udev->product_desc),
869 "host:%d.%d", bus_num, addr);
870 }
871
872 rc = usb_device_attach(udev);
873 if (rc) {
874 goto fail;
875 }
876
877 trace_usb_host_open_success(bus_num, addr);
878 return 0;
879
880 fail:
881 trace_usb_host_open_failure(bus_num, addr);
882 if (s->dh != NULL) {
883 libusb_close(s->dh);
884 s->dh = NULL;
885 s->dev = NULL;
886 }
887 return -1;
888 }
889
890 static void usb_host_abort_xfers(USBHostDevice *s)
891 {
892 USBHostRequest *r, *rtmp;
893
894 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
895 usb_host_req_abort(r);
896 }
897 }
898
899 static int usb_host_close(USBHostDevice *s)
900 {
901 USBDevice *udev = USB_DEVICE(s);
902
903 if (s->dh == NULL) {
904 return -1;
905 }
906
907 trace_usb_host_close(s->bus_num, s->addr);
908
909 usb_host_abort_xfers(s);
910 usb_host_iso_free_all(s);
911
912 if (udev->attached) {
913 usb_device_detach(udev);
914 }
915
916 usb_host_release_interfaces(s);
917 libusb_reset_device(s->dh);
918 usb_host_attach_kernel(s);
919 libusb_close(s->dh);
920 s->dh = NULL;
921 s->dev = NULL;
922
923 usb_host_auto_check(NULL);
924 return 0;
925 }
926
927 static void usb_host_nodev_bh(void *opaque)
928 {
929 USBHostDevice *s = opaque;
930 usb_host_close(s);
931 }
932
933 static void usb_host_nodev(USBHostDevice *s)
934 {
935 if (!s->bh_nodev) {
936 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
937 }
938 qemu_bh_schedule(s->bh_nodev);
939 }
940
941 static void usb_host_exit_notifier(struct Notifier *n, void *data)
942 {
943 USBHostDevice *s = container_of(n, USBHostDevice, exit);
944
945 if (s->dh) {
946 usb_host_release_interfaces(s);
947 usb_host_attach_kernel(s);
948 }
949 }
950
951 static int usb_host_initfn(USBDevice *udev)
952 {
953 USBHostDevice *s = USB_HOST_DEVICE(udev);
954
955 if (s->match.vendor_id > 0xffff) {
956 error_report("vendorid out of range");
957 return -1;
958 }
959 if (s->match.product_id > 0xffff) {
960 error_report("productid out of range");
961 return -1;
962 }
963 if (s->match.addr > 127) {
964 error_report("hostaddr out of range");
965 return -1;
966 }
967
968 loglevel = s->loglevel;
969 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
970 udev->auto_attach = 0;
971 QTAILQ_INIT(&s->requests);
972 QTAILQ_INIT(&s->isorings);
973
974 s->exit.notify = usb_host_exit_notifier;
975 qemu_add_exit_notifier(&s->exit);
976
977 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
978 add_boot_device_path(s->bootindex, &udev->qdev, NULL);
979 usb_host_auto_check(NULL);
980 return 0;
981 }
982
983 static void usb_host_handle_destroy(USBDevice *udev)
984 {
985 USBHostDevice *s = USB_HOST_DEVICE(udev);
986
987 qemu_remove_exit_notifier(&s->exit);
988 QTAILQ_REMOVE(&hostdevs, s, next);
989 usb_host_close(s);
990 }
991
992 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
993 {
994 USBHostDevice *s = USB_HOST_DEVICE(udev);
995 USBHostRequest *r;
996
997 if (p->combined) {
998 usb_combined_packet_cancel(udev, p);
999 return;
1000 }
1001
1002 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1003
1004 r = usb_host_req_find(s, p);
1005 if (r && r->p) {
1006 r->p = NULL; /* mark as dead */
1007 libusb_cancel_transfer(r->xfer);
1008 }
1009 }
1010
1011 static void usb_host_detach_kernel(USBHostDevice *s)
1012 {
1013 struct libusb_config_descriptor *conf;
1014 int rc, i;
1015
1016 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1017 if (rc != 0) {
1018 return;
1019 }
1020 for (i = 0; i < conf->bNumInterfaces; i++) {
1021 rc = libusb_kernel_driver_active(s->dh, i);
1022 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1023 if (rc != 1) {
1024 continue;
1025 }
1026 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1027 rc = libusb_detach_kernel_driver(s->dh, i);
1028 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1029 s->ifs[i].detached = true;
1030 }
1031 libusb_free_config_descriptor(conf);
1032 }
1033
1034 static void usb_host_attach_kernel(USBHostDevice *s)
1035 {
1036 struct libusb_config_descriptor *conf;
1037 int rc, i;
1038
1039 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1040 if (rc != 0) {
1041 return;
1042 }
1043 for (i = 0; i < conf->bNumInterfaces; i++) {
1044 if (!s->ifs[i].detached) {
1045 continue;
1046 }
1047 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1048 libusb_attach_kernel_driver(s->dh, i);
1049 s->ifs[i].detached = false;
1050 }
1051 libusb_free_config_descriptor(conf);
1052 }
1053
1054 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1055 {
1056 USBDevice *udev = USB_DEVICE(s);
1057 struct libusb_config_descriptor *conf;
1058 int rc, i;
1059
1060 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1061 udev->altsetting[i] = 0;
1062 }
1063 udev->ninterfaces = 0;
1064 udev->configuration = 0;
1065
1066 usb_host_detach_kernel(s);
1067
1068 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1069 if (rc != 0) {
1070 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1071 /* address state - ignore */
1072 return USB_RET_SUCCESS;
1073 }
1074 return USB_RET_STALL;
1075 }
1076
1077 for (i = 0; i < conf->bNumInterfaces; i++) {
1078 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1079 rc = libusb_claim_interface(s->dh, i);
1080 usb_host_libusb_error("libusb_claim_interface", rc);
1081 if (rc != 0) {
1082 return USB_RET_STALL;
1083 }
1084 s->ifs[i].claimed = true;
1085 }
1086
1087 udev->ninterfaces = conf->bNumInterfaces;
1088 udev->configuration = configuration;
1089
1090 libusb_free_config_descriptor(conf);
1091 return USB_RET_SUCCESS;
1092 }
1093
1094 static void usb_host_release_interfaces(USBHostDevice *s)
1095 {
1096 USBDevice *udev = USB_DEVICE(s);
1097 int i, rc;
1098
1099 for (i = 0; i < udev->ninterfaces; i++) {
1100 if (!s->ifs[i].claimed) {
1101 continue;
1102 }
1103 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1104 rc = libusb_release_interface(s->dh, i);
1105 usb_host_libusb_error("libusb_release_interface", rc);
1106 s->ifs[i].claimed = false;
1107 }
1108 }
1109
1110 static void usb_host_set_address(USBHostDevice *s, int addr)
1111 {
1112 USBDevice *udev = USB_DEVICE(s);
1113
1114 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1115 udev->addr = addr;
1116 }
1117
1118 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1119 {
1120 int rc;
1121
1122 trace_usb_host_set_config(s->bus_num, s->addr, config);
1123
1124 usb_host_release_interfaces(s);
1125 rc = libusb_set_configuration(s->dh, config);
1126 if (rc != 0) {
1127 usb_host_libusb_error("libusb_set_configuration", rc);
1128 p->status = USB_RET_STALL;
1129 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1130 usb_host_nodev(s);
1131 }
1132 return;
1133 }
1134 p->status = usb_host_claim_interfaces(s, config);
1135 if (p->status != USB_RET_SUCCESS) {
1136 return;
1137 }
1138 usb_host_ep_update(s);
1139 }
1140
1141 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1142 USBPacket *p)
1143 {
1144 USBDevice *udev = USB_DEVICE(s);
1145 int rc;
1146
1147 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1148
1149 usb_host_iso_free_all(s);
1150
1151 if (iface >= USB_MAX_INTERFACES) {
1152 p->status = USB_RET_STALL;
1153 return;
1154 }
1155
1156 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1157 if (rc != 0) {
1158 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1159 p->status = USB_RET_STALL;
1160 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1161 usb_host_nodev(s);
1162 }
1163 return;
1164 }
1165
1166 udev->altsetting[iface] = alt;
1167 usb_host_ep_update(s);
1168 }
1169
1170 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1171 int request, int value, int index,
1172 int length, uint8_t *data)
1173 {
1174 USBHostDevice *s = USB_HOST_DEVICE(udev);
1175 USBHostRequest *r;
1176 int rc;
1177
1178 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1179
1180 if (s->dh == NULL) {
1181 p->status = USB_RET_NODEV;
1182 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1183 return;
1184 }
1185
1186 switch (request) {
1187 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1188 usb_host_set_address(s, value);
1189 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1190 return;
1191
1192 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1193 usb_host_set_config(s, value & 0xff, p);
1194 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1195 return;
1196
1197 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1198 usb_host_set_interface(s, index, value, p);
1199 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1200 return;
1201
1202 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1203 if (value == 0) { /* clear halt */
1204 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1205 libusb_clear_halt(s->dh, index);
1206 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1207 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1208 return;
1209 }
1210 }
1211
1212 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1213 r->cbuf = data;
1214 r->clen = length;
1215 memcpy(r->buffer, udev->setup_buf, 8);
1216 if (!r->in) {
1217 memcpy(r->buffer + 8, r->cbuf, r->clen);
1218 }
1219
1220 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1221 * to work redirected to a not superspeed capable hcd */
1222 if (udev->speed == USB_SPEED_SUPER &&
1223 !((udev->port->speedmask & USB_SPEED_MASK_SUPER)) &&
1224 request == 0x8006 && value == 0x100 && index == 0) {
1225 r->usb3ep0quirk = true;
1226 }
1227
1228 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1229 usb_host_req_complete_ctrl, r,
1230 CONTROL_TIMEOUT);
1231 rc = libusb_submit_transfer(r->xfer);
1232 if (rc != 0) {
1233 p->status = USB_RET_NODEV;
1234 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1235 p->status, p->actual_length);
1236 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1237 usb_host_nodev(s);
1238 }
1239 return;
1240 }
1241
1242 p->status = USB_RET_ASYNC;
1243 }
1244
1245 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1246 {
1247 USBHostDevice *s = USB_HOST_DEVICE(udev);
1248 USBHostRequest *r;
1249 size_t size;
1250 int ep, rc;
1251
1252 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1253 p->status = USB_RET_ADD_TO_QUEUE;
1254 return;
1255 }
1256
1257 trace_usb_host_req_data(s->bus_num, s->addr, p,
1258 p->pid == USB_TOKEN_IN,
1259 p->ep->nr, p->iov.size);
1260
1261 if (s->dh == NULL) {
1262 p->status = USB_RET_NODEV;
1263 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1264 return;
1265 }
1266 if (p->ep->halted) {
1267 p->status = USB_RET_STALL;
1268 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1269 return;
1270 }
1271
1272 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1273 case USB_ENDPOINT_XFER_BULK:
1274 size = usb_packet_size(p);
1275 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1276 if (!r->in) {
1277 usb_packet_copy(p, r->buffer, size);
1278 }
1279 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1280 if (p->stream) {
1281 #ifdef HAVE_STREAMS
1282 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1283 r->buffer, size,
1284 usb_host_req_complete_data, r,
1285 BULK_TIMEOUT);
1286 #else
1287 usb_host_req_free(r);
1288 p->status = USB_RET_STALL;
1289 return;
1290 #endif
1291 } else {
1292 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1293 r->buffer, size,
1294 usb_host_req_complete_data, r,
1295 BULK_TIMEOUT);
1296 }
1297 break;
1298 case USB_ENDPOINT_XFER_INT:
1299 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1300 if (!r->in) {
1301 usb_packet_copy(p, r->buffer, p->iov.size);
1302 }
1303 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1304 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1305 r->buffer, p->iov.size,
1306 usb_host_req_complete_data, r,
1307 INTR_TIMEOUT);
1308 break;
1309 case USB_ENDPOINT_XFER_ISOC:
1310 if (p->pid == USB_TOKEN_IN) {
1311 usb_host_iso_data_in(s, p);
1312 } else {
1313 usb_host_iso_data_out(s, p);
1314 }
1315 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1316 p->status, p->actual_length);
1317 return;
1318 default:
1319 p->status = USB_RET_STALL;
1320 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1321 p->status, p->actual_length);
1322 return;
1323 }
1324
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_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1340 {
1341 if (usb_host_use_combining(ep)) {
1342 usb_ep_combine_input_packets(ep);
1343 }
1344 }
1345
1346 static void usb_host_handle_reset(USBDevice *udev)
1347 {
1348 USBHostDevice *s = USB_HOST_DEVICE(udev);
1349 int rc;
1350
1351 trace_usb_host_reset(s->bus_num, s->addr);
1352
1353 rc = libusb_reset_device(s->dh);
1354 if (rc != 0) {
1355 usb_host_nodev(s);
1356 }
1357 }
1358
1359 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1360 int nr_eps, int streams)
1361 {
1362 #ifdef HAVE_STREAMS
1363 USBHostDevice *s = USB_HOST_DEVICE(udev);
1364 unsigned char endpoints[30];
1365 int i, rc;
1366
1367 for (i = 0; i < nr_eps; i++) {
1368 endpoints[i] = eps[i]->nr;
1369 if (eps[i]->pid == USB_TOKEN_IN) {
1370 endpoints[i] |= 0x80;
1371 }
1372 }
1373 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1374 if (rc < 0) {
1375 usb_host_libusb_error("libusb_alloc_streams", rc);
1376 } else if (rc != streams) {
1377 fprintf(stderr,
1378 "libusb_alloc_streams: got less streams then requested %d < %d\n",
1379 rc, streams);
1380 }
1381
1382 return (rc == streams) ? 0 : -1;
1383 #else
1384 fprintf(stderr, "libusb_alloc_streams: error not implemented\n");
1385 return -1;
1386 #endif
1387 }
1388
1389 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1390 int nr_eps)
1391 {
1392 #ifdef HAVE_STREAMS
1393 USBHostDevice *s = USB_HOST_DEVICE(udev);
1394 unsigned char endpoints[30];
1395 int i;
1396
1397 for (i = 0; i < nr_eps; i++) {
1398 endpoints[i] = eps[i]->nr;
1399 if (eps[i]->pid == USB_TOKEN_IN) {
1400 endpoints[i] |= 0x80;
1401 }
1402 }
1403 libusb_free_streams(s->dh, endpoints, nr_eps);
1404 #endif
1405 }
1406
1407 /*
1408 * This is *NOT* about restoring state. We have absolutely no idea
1409 * what state the host device is in at the moment and whenever it is
1410 * still present in the first place. Attemping to contine where we
1411 * left off is impossible.
1412 *
1413 * What we are going to to to here is emulate a surprise removal of
1414 * the usb device passed through, then kick host scan so the device
1415 * will get re-attached (and re-initialized by the guest) in case it
1416 * is still present.
1417 *
1418 * As the device removal will change the state of other devices (usb
1419 * host controller, most likely interrupt controller too) we have to
1420 * wait with it until *all* vmstate is loaded. Thus post_load just
1421 * kicks a bottom half which then does the actual work.
1422 */
1423 static void usb_host_post_load_bh(void *opaque)
1424 {
1425 USBHostDevice *dev = opaque;
1426 USBDevice *udev = USB_DEVICE(dev);
1427
1428 if (dev->dh != NULL) {
1429 usb_host_close(dev);
1430 }
1431 if (udev->attached) {
1432 usb_device_detach(udev);
1433 }
1434 usb_host_auto_check(NULL);
1435 }
1436
1437 static int usb_host_post_load(void *opaque, int version_id)
1438 {
1439 USBHostDevice *dev = opaque;
1440
1441 if (!dev->bh_postld) {
1442 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1443 }
1444 qemu_bh_schedule(dev->bh_postld);
1445 return 0;
1446 }
1447
1448 static const VMStateDescription vmstate_usb_host = {
1449 .name = "usb-host",
1450 .version_id = 1,
1451 .minimum_version_id = 1,
1452 .post_load = usb_host_post_load,
1453 .fields = (VMStateField[]) {
1454 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1455 VMSTATE_END_OF_LIST()
1456 }
1457 };
1458
1459 static Property usb_host_dev_properties[] = {
1460 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1461 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1462 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1463 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1464 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1465 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1466 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1467 DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1),
1468 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1469 LIBUSB_LOG_LEVEL_WARNING),
1470 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1471 USB_HOST_OPT_PIPELINE, true),
1472 DEFINE_PROP_END_OF_LIST(),
1473 };
1474
1475 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1476 {
1477 DeviceClass *dc = DEVICE_CLASS(klass);
1478 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1479
1480 uc->init = usb_host_initfn;
1481 uc->product_desc = "USB Host Device";
1482 uc->cancel_packet = usb_host_cancel_packet;
1483 uc->handle_data = usb_host_handle_data;
1484 uc->handle_control = usb_host_handle_control;
1485 uc->handle_reset = usb_host_handle_reset;
1486 uc->handle_destroy = usb_host_handle_destroy;
1487 uc->flush_ep_queue = usb_host_flush_ep_queue;
1488 uc->alloc_streams = usb_host_alloc_streams;
1489 uc->free_streams = usb_host_free_streams;
1490 dc->vmsd = &vmstate_usb_host;
1491 dc->props = usb_host_dev_properties;
1492 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1493 }
1494
1495 static TypeInfo usb_host_dev_info = {
1496 .name = TYPE_USB_HOST_DEVICE,
1497 .parent = TYPE_USB_DEVICE,
1498 .instance_size = sizeof(USBHostDevice),
1499 .class_init = usb_host_class_initfn,
1500 };
1501
1502 static void usb_host_register_types(void)
1503 {
1504 type_register_static(&usb_host_dev_info);
1505 }
1506
1507 type_init(usb_host_register_types)
1508
1509 /* ------------------------------------------------------------------------ */
1510
1511 static QEMUTimer *usb_auto_timer;
1512 static VMChangeStateEntry *usb_vmstate;
1513
1514 static void usb_host_vm_state(void *unused, int running, RunState state)
1515 {
1516 if (running) {
1517 usb_host_auto_check(unused);
1518 }
1519 }
1520
1521 static void usb_host_auto_check(void *unused)
1522 {
1523 struct USBHostDevice *s;
1524 struct USBAutoFilter *f;
1525 libusb_device **devs;
1526 struct libusb_device_descriptor ddesc;
1527 int unconnected = 0;
1528 int i, n;
1529
1530 if (usb_host_init() != 0) {
1531 return;
1532 }
1533
1534 if (runstate_is_running()) {
1535 n = libusb_get_device_list(ctx, &devs);
1536 for (i = 0; i < n; i++) {
1537 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1538 continue;
1539 }
1540 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1541 continue;
1542 }
1543 QTAILQ_FOREACH(s, &hostdevs, next) {
1544 f = &s->match;
1545 if (f->bus_num > 0 &&
1546 f->bus_num != libusb_get_bus_number(devs[i])) {
1547 continue;
1548 }
1549 if (f->addr > 0 &&
1550 f->addr != libusb_get_device_address(devs[i])) {
1551 continue;
1552 }
1553 if (f->port != NULL) {
1554 char port[16] = "-";
1555 usb_host_get_port(devs[i], port, sizeof(port));
1556 if (strcmp(f->port, port) != 0) {
1557 continue;
1558 }
1559 }
1560 if (f->vendor_id > 0 &&
1561 f->vendor_id != ddesc.idVendor) {
1562 continue;
1563 }
1564 if (f->product_id > 0 &&
1565 f->product_id != ddesc.idProduct) {
1566 continue;
1567 }
1568
1569 /* We got a match */
1570 s->seen++;
1571 if (s->errcount >= 3) {
1572 continue;
1573 }
1574 if (s->dh != NULL) {
1575 continue;
1576 }
1577 if (usb_host_open(s, devs[i]) < 0) {
1578 s->errcount++;
1579 continue;
1580 }
1581 break;
1582 }
1583 }
1584 libusb_free_device_list(devs, 1);
1585
1586 QTAILQ_FOREACH(s, &hostdevs, next) {
1587 if (s->dh == NULL) {
1588 unconnected++;
1589 }
1590 if (s->seen == 0) {
1591 if (s->dh) {
1592 usb_host_close(s);
1593 }
1594 s->errcount = 0;
1595 }
1596 s->seen = 0;
1597 }
1598
1599 #if 0
1600 if (unconnected == 0) {
1601 /* nothing to watch */
1602 if (usb_auto_timer) {
1603 timer_del(usb_auto_timer);
1604 trace_usb_host_auto_scan_disabled();
1605 }
1606 return;
1607 }
1608 #endif
1609 }
1610
1611 if (!usb_vmstate) {
1612 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1613 }
1614 if (!usb_auto_timer) {
1615 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1616 if (!usb_auto_timer) {
1617 return;
1618 }
1619 trace_usb_host_auto_scan_enabled();
1620 }
1621 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1622 }
1623
1624 void usb_host_info(Monitor *mon, const QDict *qdict)
1625 {
1626 libusb_device **devs;
1627 struct libusb_device_descriptor ddesc;
1628 char port[16];
1629 int i, n;
1630
1631 if (usb_host_init() != 0) {
1632 return;
1633 }
1634
1635 n = libusb_get_device_list(ctx, &devs);
1636 for (i = 0; i < n; i++) {
1637 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1638 continue;
1639 }
1640 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1641 continue;
1642 }
1643 usb_host_get_port(devs[i], port, sizeof(port));
1644 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1645 libusb_get_bus_number(devs[i]),
1646 libusb_get_device_address(devs[i]),
1647 port,
1648 speed_name[libusb_get_device_speed(devs[i])]);
1649 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1650 monitor_printf(mon, " USB device %04x:%04x",
1651 ddesc.idVendor, ddesc.idProduct);
1652 if (ddesc.iProduct) {
1653 libusb_device_handle *handle;
1654 if (libusb_open(devs[i], &handle) == 0) {
1655 unsigned char name[64] = "";
1656 libusb_get_string_descriptor_ascii(handle,
1657 ddesc.iProduct,
1658 name, sizeof(name));
1659 libusb_close(handle);
1660 monitor_printf(mon, ", %s", name);
1661 }
1662 }
1663 monitor_printf(mon, "\n");
1664 }
1665 libusb_free_device_list(devs, 1);
1666 }
AR7 emulation for QEMU