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scripts: kernel-doc: fix troubles with line counts
[qemu/ar7.git] / hw / usb / host-libusb.c
blobb950501d100f7e695b20e58ce8bf902622742f9e
1 /*
2 * Linux host USB redirector
3 *
4 * Copyright (c) 2005 Fabrice Bellard
5 *
6 * Copyright (c) 2008 Max Krasnyansky
7 * Support for host device auto connect & disconnect
8 * Major rewrite to support fully async operation
9 *
10 * Copyright 2008 TJ <linux@tjworld.net>
11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
12 * to the legacy /proc/bus/usb USB device discovery and handling
13 *
14 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com>
15 * Completely rewritten to use libusb instead of usbfs ioctls.
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining a copy
18 * of this software and associated documentation files (the "Software"), to deal
19 * in the Software without restriction, including without limitation the rights
20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
21 * copies of the Software, and to permit persons to whom the Software is
22 * furnished to do so, subject to the following conditions:
23 *
24 * The above copyright notice and this permission notice shall be included in
25 * all copies or substantial portions of the Software.
26 *
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
33 * THE SOFTWARE.
34 */
35
36 #include "qemu/osdep.h"
37 #include "qom/object.h"
38 #ifndef CONFIG_WIN32
39 #include <poll.h>
40 #endif
41 #include <libusb.h>
42
43 #ifdef CONFIG_LINUX
44 #include <sys/ioctl.h>
45 #include <linux/usbdevice_fs.h>
46 #endif
47
48 #include "qapi/error.h"
49 #include "migration/vmstate.h"
50 #include "monitor/monitor.h"
51 #include "qemu/error-report.h"
52 #include "qemu/main-loop.h"
53 #include "qemu/module.h"
54 #include "sysemu/runstate.h"
55 #include "sysemu/sysemu.h"
56 #include "trace.h"
57
58 #include "hw/qdev-properties.h"
59 #include "hw/usb.h"
60
61 /* ------------------------------------------------------------------------ */
62
63 #define TYPE_USB_HOST_DEVICE "usb-host"
64 OBJECT_DECLARE_SIMPLE_TYPE(USBHostDevice, USB_HOST_DEVICE)
65
66 typedef struct USBHostRequest USBHostRequest;
67 typedef struct USBHostIsoXfer USBHostIsoXfer;
68 typedef struct USBHostIsoRing USBHostIsoRing;
69
70 struct USBAutoFilter {
71 uint32_t bus_num;
72 uint32_t addr;
73 char *port;
74 uint32_t vendor_id;
75 uint32_t product_id;
76 };
77
78 enum USBHostDeviceOptions {
79 USB_HOST_OPT_PIPELINE,
80 };
81
82 struct USBHostDevice {
83 USBDevice parent_obj;
84
85 /* properties */
86 struct USBAutoFilter match;
87 char *hostdevice;
88 int32_t bootindex;
89 uint32_t iso_urb_count;
90 uint32_t iso_urb_frames;
91 uint32_t options;
92 uint32_t loglevel;
93 bool needs_autoscan;
94 bool allow_one_guest_reset;
95 bool allow_all_guest_resets;
96 bool suppress_remote_wake;
97
98 /* state */
99 QTAILQ_ENTRY(USBHostDevice) next;
100 int seen, errcount;
101 int bus_num;
102 int addr;
103 char port[16];
104
105 int hostfd;
106 libusb_device *dev;
107 libusb_device_handle *dh;
108 struct libusb_device_descriptor ddesc;
109
110 struct {
111 bool detached;
112 bool claimed;
113 } ifs[USB_MAX_INTERFACES];
114
115 /* callbacks & friends */
116 QEMUBH *bh_nodev;
117 QEMUBH *bh_postld;
118 bool bh_postld_pending;
119 Notifier exit;
120
121 /* request queues */
122 QTAILQ_HEAD(, USBHostRequest) requests;
123 QTAILQ_HEAD(, USBHostIsoRing) isorings;
124 };
125
126 struct USBHostRequest {
127 USBHostDevice *host;
128 USBPacket *p;
129 bool in;
130 struct libusb_transfer *xfer;
131 unsigned char *buffer;
132 unsigned char *cbuf;
133 unsigned int clen;
134 bool usb3ep0quirk;
135 QTAILQ_ENTRY(USBHostRequest) next;
136 };
137
138 struct USBHostIsoXfer {
139 USBHostIsoRing *ring;
140 struct libusb_transfer *xfer;
141 bool copy_complete;
142 unsigned int packet;
143 QTAILQ_ENTRY(USBHostIsoXfer) next;
144 };
145
146 struct USBHostIsoRing {
147 USBHostDevice *host;
148 USBEndpoint *ep;
149 QTAILQ_HEAD(, USBHostIsoXfer) unused;
150 QTAILQ_HEAD(, USBHostIsoXfer) inflight;
151 QTAILQ_HEAD(, USBHostIsoXfer) copy;
152 QTAILQ_ENTRY(USBHostIsoRing) next;
153 };
154
155 static QTAILQ_HEAD(, USBHostDevice) hostdevs =
156 QTAILQ_HEAD_INITIALIZER(hostdevs);
157
158 static void usb_host_auto_check(void *unused);
159 static void usb_host_release_interfaces(USBHostDevice *s);
160 static void usb_host_nodev(USBHostDevice *s);
161 static void usb_host_detach_kernel(USBHostDevice *s);
162 static void usb_host_attach_kernel(USBHostDevice *s);
163
164 /* ------------------------------------------------------------------------ */
165
166 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */
167 #define LIBUSB_LOG_LEVEL_WARNING 2
168 #endif
169
170 /* ------------------------------------------------------------------------ */
171
172 #define CONTROL_TIMEOUT 10000 /* 10 sec */
173 #define BULK_TIMEOUT 0 /* unlimited */
174 #define INTR_TIMEOUT 0 /* unlimited */
175
176 #ifndef LIBUSB_API_VERSION
177 # define LIBUSB_API_VERSION LIBUSBX_API_VERSION
178 #endif
179 #if LIBUSB_API_VERSION >= 0x01000103
180 # define HAVE_STREAMS 1
181 #endif
182
183 static const char *speed_name[] = {
184 [LIBUSB_SPEED_UNKNOWN] = "?",
185 [LIBUSB_SPEED_LOW] = "1.5",
186 [LIBUSB_SPEED_FULL] = "12",
187 [LIBUSB_SPEED_HIGH] = "480",
188 [LIBUSB_SPEED_SUPER] = "5000",
189 };
190
191 static const unsigned int speed_map[] = {
192 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW,
193 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL,
194 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH,
195 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER,
196 };
197
198 static const unsigned int status_map[] = {
199 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS,
200 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR,
201 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR,
202 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR,
203 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL,
204 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV,
205 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE,
206 };
207
208 static const char *err_names[] = {
209 [-LIBUSB_ERROR_IO] = "IO",
210 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM",
211 [-LIBUSB_ERROR_ACCESS] = "ACCESS",
212 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE",
213 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND",
214 [-LIBUSB_ERROR_BUSY] = "BUSY",
215 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT",
216 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW",
217 [-LIBUSB_ERROR_PIPE] = "PIPE",
218 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED",
219 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM",
220 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED",
221 [-LIBUSB_ERROR_OTHER] = "OTHER",
222 };
223
224 static libusb_context *ctx;
225 static uint32_t loglevel;
226
227 #ifndef CONFIG_WIN32
228
229 static void usb_host_handle_fd(void *opaque)
230 {
231 struct timeval tv = { 0, 0 };
232 libusb_handle_events_timeout(ctx, &tv);
233 }
234
235 static void usb_host_add_fd(int fd, short events, void *user_data)
236 {
237 qemu_set_fd_handler(fd,
238 (events & POLLIN) ? usb_host_handle_fd : NULL,
239 (events & POLLOUT) ? usb_host_handle_fd : NULL,
240 ctx);
241 }
242
243 static void usb_host_del_fd(int fd, void *user_data)
244 {
245 qemu_set_fd_handler(fd, NULL, NULL, NULL);
246 }
247
248 #endif /* !CONFIG_WIN32 */
249
250 static int usb_host_init(void)
251 {
252 #ifndef CONFIG_WIN32
253 const struct libusb_pollfd **poll;
254 #endif
255 int rc;
256
257 if (ctx) {
258 return 0;
259 }
260 rc = libusb_init(&ctx);
261 if (rc != 0) {
262 return -1;
263 }
264 #if LIBUSB_API_VERSION >= 0x01000106
265 libusb_set_option(ctx, LIBUSB_OPTION_LOG_LEVEL, loglevel);
266 #else
267 libusb_set_debug(ctx, loglevel);
268 #endif
269 #ifdef CONFIG_WIN32
270 /* FIXME: add support for Windows. */
271 #else
272 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd,
273 usb_host_del_fd,
274 ctx);
275 poll = libusb_get_pollfds(ctx);
276 if (poll) {
277 int i;
278 for (i = 0; poll[i] != NULL; i++) {
279 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx);
280 }
281 }
282 free(poll);
283 #endif
284 return 0;
285 }
286
287 static int usb_host_get_port(libusb_device *dev, char *port, size_t len)
288 {
289 uint8_t path[7];
290 size_t off;
291 int rc, i;
292
293 #if LIBUSB_API_VERSION >= 0x01000102
294 rc = libusb_get_port_numbers(dev, path, 7);
295 #else
296 rc = libusb_get_port_path(ctx, dev, path, 7);
297 #endif
298 if (rc < 0) {
299 return 0;
300 }
301 off = snprintf(port, len, "%d", path[0]);
302 for (i = 1; i < rc; i++) {
303 off += snprintf(port+off, len-off, ".%d", path[i]);
304 }
305 return off;
306 }
307
308 static void usb_host_libusb_error(const char *func, int rc)
309 {
310 const char *errname;
311
312 if (rc >= 0) {
313 return;
314 }
315
316 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) {
317 errname = err_names[-rc];
318 } else {
319 errname = "?";
320 }
321 error_report("%s: %d [%s]", func, rc, errname);
322 }
323
324 /* ------------------------------------------------------------------------ */
325
326 static bool usb_host_use_combining(USBEndpoint *ep)
327 {
328 int type;
329
330 if (!ep->pipeline) {
331 return false;
332 }
333 if (ep->pid != USB_TOKEN_IN) {
334 return false;
335 }
336 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr);
337 if (type != USB_ENDPOINT_XFER_BULK) {
338 return false;
339 }
340 return true;
341 }
342
343 /* ------------------------------------------------------------------------ */
344
345 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p,
346 bool in, size_t bufsize)
347 {
348 USBHostRequest *r = g_new0(USBHostRequest, 1);
349
350 r->host = s;
351 r->p = p;
352 r->in = in;
353 r->xfer = libusb_alloc_transfer(0);
354 if (bufsize) {
355 r->buffer = g_malloc(bufsize);
356 }
357 QTAILQ_INSERT_TAIL(&s->requests, r, next);
358 return r;
359 }
360
361 static void usb_host_req_free(USBHostRequest *r)
362 {
363 QTAILQ_REMOVE(&r->host->requests, r, next);
364 libusb_free_transfer(r->xfer);
365 g_free(r->buffer);
366 g_free(r);
367 }
368
369 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p)
370 {
371 USBHostRequest *r;
372
373 QTAILQ_FOREACH(r, &s->requests, next) {
374 if (r->p == p) {
375 return r;
376 }
377 }
378 return NULL;
379 }
380
381 static void LIBUSB_CALL usb_host_req_complete_ctrl(struct libusb_transfer *xfer)
382 {
383 USBHostRequest *r = xfer->user_data;
384 USBHostDevice *s = r->host;
385 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
386
387 if (r->p == NULL) {
388 goto out; /* request was canceled */
389 }
390
391 r->p->status = status_map[xfer->status];
392 r->p->actual_length = xfer->actual_length;
393 if (r->in && xfer->actual_length) {
394 USBDevice *udev = USB_DEVICE(s);
395 struct libusb_config_descriptor *conf = (void *)r->cbuf;
396 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length);
397
398 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
399 * to work redirected to a not superspeed capable hcd */
400 if (r->usb3ep0quirk && xfer->actual_length >= 18 &&
401 r->cbuf[7] == 9) {
402 r->cbuf[7] = 64;
403 }
404 /*
405 *If this is GET_DESCRIPTOR request for configuration descriptor,
406 * remove 'remote wakeup' flag from it to prevent idle power down
407 * in Windows guest
408 */
409 if (s->suppress_remote_wake &&
410 udev->setup_buf[0] == USB_DIR_IN &&
411 udev->setup_buf[1] == USB_REQ_GET_DESCRIPTOR &&
412 udev->setup_buf[3] == USB_DT_CONFIG && udev->setup_buf[2] == 0 &&
413 xfer->actual_length >
414 offsetof(struct libusb_config_descriptor, bmAttributes) &&
415 (conf->bmAttributes & USB_CFG_ATT_WAKEUP)) {
416 trace_usb_host_remote_wakeup_removed(s->bus_num, s->addr);
417 conf->bmAttributes &= ~USB_CFG_ATT_WAKEUP;
418 }
419 }
420 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
421 r->p->status, r->p->actual_length);
422 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
423
424 out:
425 usb_host_req_free(r);
426 if (disconnect) {
427 usb_host_nodev(s);
428 }
429 }
430
431 static void LIBUSB_CALL usb_host_req_complete_data(struct libusb_transfer *xfer)
432 {
433 USBHostRequest *r = xfer->user_data;
434 USBHostDevice *s = r->host;
435 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE);
436
437 if (r->p == NULL) {
438 goto out; /* request was canceled */
439 }
440
441 r->p->status = status_map[xfer->status];
442 if (r->in && xfer->actual_length) {
443 usb_packet_copy(r->p, r->buffer, xfer->actual_length);
444 }
445 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
446 r->p->status, r->p->actual_length);
447 if (usb_host_use_combining(r->p->ep)) {
448 usb_combined_input_packet_complete(USB_DEVICE(s), r->p);
449 } else {
450 usb_packet_complete(USB_DEVICE(s), r->p);
451 }
452
453 out:
454 usb_host_req_free(r);
455 if (disconnect) {
456 usb_host_nodev(s);
457 }
458 }
459
460 static void usb_host_req_abort(USBHostRequest *r)
461 {
462 USBHostDevice *s = r->host;
463 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC);
464
465 if (inflight) {
466 r->p->status = USB_RET_NODEV;
467 trace_usb_host_req_complete(s->bus_num, s->addr, r->p,
468 r->p->status, r->p->actual_length);
469 if (r->p->ep->nr == 0) {
470 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p);
471 } else {
472 usb_packet_complete(USB_DEVICE(s), r->p);
473 }
474 r->p = NULL;
475
476 libusb_cancel_transfer(r->xfer);
477 }
478 }
479
480 /* ------------------------------------------------------------------------ */
481
482 static void LIBUSB_CALL
483 usb_host_req_complete_iso(struct libusb_transfer *transfer)
484 {
485 USBHostIsoXfer *xfer = transfer->user_data;
486
487 if (!xfer) {
488 /* USBHostIsoXfer released while inflight */
489 g_free(transfer->buffer);
490 libusb_free_transfer(transfer);
491 return;
492 }
493
494 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next);
495 if (QTAILQ_EMPTY(&xfer->ring->inflight)) {
496 USBHostDevice *s = xfer->ring->host;
497 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr);
498 }
499 if (xfer->ring->ep->pid == USB_TOKEN_IN) {
500 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next);
501 usb_wakeup(xfer->ring->ep, 0);
502 } else {
503 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next);
504 }
505 }
506
507 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep)
508 {
509 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1);
510 USBHostIsoXfer *xfer;
511 /* FIXME: check interval (for now assume one xfer per frame) */
512 int packets = s->iso_urb_frames;
513 int i;
514
515 ring->host = s;
516 ring->ep = ep;
517 QTAILQ_INIT(&ring->unused);
518 QTAILQ_INIT(&ring->inflight);
519 QTAILQ_INIT(&ring->copy);
520 QTAILQ_INSERT_TAIL(&s->isorings, ring, next);
521
522 for (i = 0; i < s->iso_urb_count; i++) {
523 xfer = g_new0(USBHostIsoXfer, 1);
524 xfer->ring = ring;
525 xfer->xfer = libusb_alloc_transfer(packets);
526 xfer->xfer->dev_handle = s->dh;
527 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
528
529 xfer->xfer->endpoint = ring->ep->nr;
530 if (ring->ep->pid == USB_TOKEN_IN) {
531 xfer->xfer->endpoint |= USB_DIR_IN;
532 }
533 xfer->xfer->callback = usb_host_req_complete_iso;
534 xfer->xfer->user_data = xfer;
535
536 xfer->xfer->num_iso_packets = packets;
537 xfer->xfer->length = ring->ep->max_packet_size * packets;
538 xfer->xfer->buffer = g_malloc0(xfer->xfer->length);
539
540 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
541 }
542
543 return ring;
544 }
545
546 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep)
547 {
548 USBHostIsoRing *ring;
549
550 QTAILQ_FOREACH(ring, &s->isorings, next) {
551 if (ring->ep == ep) {
552 return ring;
553 }
554 }
555 return NULL;
556 }
557
558 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer)
559 {
560 libusb_set_iso_packet_lengths(xfer->xfer,
561 xfer->ring->ep->max_packet_size);
562 xfer->packet = 0;
563 xfer->copy_complete = false;
564 }
565
566 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight)
567 {
568 if (inflight) {
569 xfer->xfer->user_data = NULL;
570 } else {
571 g_free(xfer->xfer->buffer);
572 libusb_free_transfer(xfer->xfer);
573 }
574 g_free(xfer);
575 }
576
577 static void usb_host_iso_free(USBHostIsoRing *ring)
578 {
579 USBHostIsoXfer *xfer;
580
581 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) {
582 QTAILQ_REMOVE(&ring->inflight, xfer, next);
583 usb_host_iso_free_xfer(xfer, true);
584 }
585 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
586 QTAILQ_REMOVE(&ring->unused, xfer, next);
587 usb_host_iso_free_xfer(xfer, false);
588 }
589 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) {
590 QTAILQ_REMOVE(&ring->copy, xfer, next);
591 usb_host_iso_free_xfer(xfer, false);
592 }
593
594 QTAILQ_REMOVE(&ring->host->isorings, ring, next);
595 g_free(ring);
596 }
597
598 static void usb_host_iso_free_all(USBHostDevice *s)
599 {
600 USBHostIsoRing *ring;
601
602 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) {
603 usb_host_iso_free(ring);
604 }
605 }
606
607 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p)
608 {
609 unsigned int psize;
610 unsigned char *buf;
611
612 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet);
613 if (p->pid == USB_TOKEN_OUT) {
614 psize = p->iov.size;
615 if (psize > xfer->ring->ep->max_packet_size) {
616 /* should not happen (guest bug) */
617 psize = xfer->ring->ep->max_packet_size;
618 }
619 xfer->xfer->iso_packet_desc[xfer->packet].length = psize;
620 } else {
621 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length;
622 if (psize > p->iov.size) {
623 /* should not happen (guest bug) */
624 psize = p->iov.size;
625 }
626 }
627 usb_packet_copy(p, buf, psize);
628 xfer->packet++;
629 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets);
630 return xfer->copy_complete;
631 }
632
633 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p)
634 {
635 USBHostIsoRing *ring;
636 USBHostIsoXfer *xfer;
637 bool disconnect = false;
638 int rc;
639
640 ring = usb_host_iso_find(s, p->ep);
641 if (ring == NULL) {
642 ring = usb_host_iso_alloc(s, p->ep);
643 }
644
645 /* copy data to guest */
646 xfer = QTAILQ_FIRST(&ring->copy);
647 if (xfer != NULL) {
648 if (usb_host_iso_data_copy(xfer, p)) {
649 QTAILQ_REMOVE(&ring->copy, xfer, next);
650 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
651 }
652 }
653
654 /* submit empty bufs to host */
655 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) {
656 QTAILQ_REMOVE(&ring->unused, xfer, next);
657 usb_host_iso_reset_xfer(xfer);
658 rc = libusb_submit_transfer(xfer->xfer);
659 if (rc != 0) {
660 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
661 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
662 if (rc == LIBUSB_ERROR_NO_DEVICE) {
663 disconnect = true;
664 }
665 break;
666 }
667 if (QTAILQ_EMPTY(&ring->inflight)) {
668 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
669 }
670 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
671 }
672
673 if (disconnect) {
674 usb_host_nodev(s);
675 }
676 }
677
678 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p)
679 {
680 USBHostIsoRing *ring;
681 USBHostIsoXfer *xfer;
682 bool disconnect = false;
683 int rc, filled = 0;
684
685 ring = usb_host_iso_find(s, p->ep);
686 if (ring == NULL) {
687 ring = usb_host_iso_alloc(s, p->ep);
688 }
689
690 /* copy data from guest */
691 xfer = QTAILQ_FIRST(&ring->copy);
692 while (xfer != NULL && xfer->copy_complete) {
693 filled++;
694 xfer = QTAILQ_NEXT(xfer, next);
695 }
696 if (xfer == NULL) {
697 xfer = QTAILQ_FIRST(&ring->unused);
698 if (xfer == NULL) {
699 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr);
700 return;
701 }
702 QTAILQ_REMOVE(&ring->unused, xfer, next);
703 usb_host_iso_reset_xfer(xfer);
704 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next);
705 }
706 usb_host_iso_data_copy(xfer, p);
707
708 if (QTAILQ_EMPTY(&ring->inflight)) {
709 /* wait until half of our buffers are filled
710 before kicking the iso out stream */
711 if (filled*2 < s->iso_urb_count) {
712 return;
713 }
714 }
715
716 /* submit filled bufs to host */
717 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL &&
718 xfer->copy_complete) {
719 QTAILQ_REMOVE(&ring->copy, xfer, next);
720 rc = libusb_submit_transfer(xfer->xfer);
721 if (rc != 0) {
722 usb_host_libusb_error("libusb_submit_transfer [iso]", rc);
723 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next);
724 if (rc == LIBUSB_ERROR_NO_DEVICE) {
725 disconnect = true;
726 }
727 break;
728 }
729 if (QTAILQ_EMPTY(&ring->inflight)) {
730 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr);
731 }
732 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next);
733 }
734
735 if (disconnect) {
736 usb_host_nodev(s);
737 }
738 }
739
740 /* ------------------------------------------------------------------------ */
741
742 static void usb_host_speed_compat(USBHostDevice *s)
743 {
744 USBDevice *udev = USB_DEVICE(s);
745 struct libusb_config_descriptor *conf;
746 const struct libusb_interface_descriptor *intf;
747 const struct libusb_endpoint_descriptor *endp;
748 #ifdef HAVE_STREAMS
749 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
750 #endif
751 bool compat_high = true;
752 bool compat_full = true;
753 uint8_t type;
754 int rc, c, i, a, e;
755
756 for (c = 0;; c++) {
757 rc = libusb_get_config_descriptor(s->dev, c, &conf);
758 if (rc != 0) {
759 break;
760 }
761 for (i = 0; i < conf->bNumInterfaces; i++) {
762 for (a = 0; a < conf->interface[i].num_altsetting; a++) {
763 intf = &conf->interface[i].altsetting[a];
764 for (e = 0; e < intf->bNumEndpoints; e++) {
765 endp = &intf->endpoint[e];
766 type = endp->bmAttributes & 0x3;
767 switch (type) {
768 case 0x01: /* ISO */
769 compat_full = false;
770 compat_high = false;
771 break;
772 case 0x02: /* BULK */
773 #ifdef HAVE_STREAMS
774 rc = libusb_get_ss_endpoint_companion_descriptor
775 (ctx, endp, &endp_ss_comp);
776 if (rc == LIBUSB_SUCCESS) {
777 int streams = endp_ss_comp->bmAttributes & 0x1f;
778 if (streams) {
779 compat_full = false;
780 compat_high = false;
781 }
782 libusb_free_ss_endpoint_companion_descriptor
783 (endp_ss_comp);
784 }
785 #endif
786 break;
787 case 0x03: /* INTERRUPT */
788 if (endp->wMaxPacketSize > 64) {
789 compat_full = false;
790 }
791 if (endp->wMaxPacketSize > 1024) {
792 compat_high = false;
793 }
794 break;
795 }
796 }
797 }
798 }
799 libusb_free_config_descriptor(conf);
800 }
801
802 udev->speedmask = (1 << udev->speed);
803 if (udev->speed == USB_SPEED_SUPER && compat_high) {
804 udev->speedmask |= USB_SPEED_MASK_HIGH;
805 }
806 if (udev->speed == USB_SPEED_SUPER && compat_full) {
807 udev->speedmask |= USB_SPEED_MASK_FULL;
808 }
809 if (udev->speed == USB_SPEED_HIGH && compat_full) {
810 udev->speedmask |= USB_SPEED_MASK_FULL;
811 }
812 }
813
814 static void usb_host_ep_update(USBHostDevice *s)
815 {
816 static const char *tname[] = {
817 [USB_ENDPOINT_XFER_CONTROL] = "control",
818 [USB_ENDPOINT_XFER_ISOC] = "isoc",
819 [USB_ENDPOINT_XFER_BULK] = "bulk",
820 [USB_ENDPOINT_XFER_INT] = "int",
821 };
822 USBDevice *udev = USB_DEVICE(s);
823 struct libusb_config_descriptor *conf;
824 const struct libusb_interface_descriptor *intf;
825 const struct libusb_endpoint_descriptor *endp;
826 #ifdef HAVE_STREAMS
827 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp;
828 #endif
829 uint8_t devep, type;
830 int pid, ep;
831 int rc, i, e;
832
833 usb_ep_reset(udev);
834 rc = libusb_get_active_config_descriptor(s->dev, &conf);
835 if (rc != 0) {
836 return;
837 }
838 trace_usb_host_parse_config(s->bus_num, s->addr,
839 conf->bConfigurationValue, true);
840
841 for (i = 0; i < conf->bNumInterfaces; i++) {
842 assert(udev->altsetting[i] < conf->interface[i].num_altsetting);
843 intf = &conf->interface[i].altsetting[udev->altsetting[i]];
844 trace_usb_host_parse_interface(s->bus_num, s->addr,
845 intf->bInterfaceNumber,
846 intf->bAlternateSetting, true);
847 for (e = 0; e < intf->bNumEndpoints; e++) {
848 endp = &intf->endpoint[e];
849
850 devep = endp->bEndpointAddress;
851 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
852 ep = devep & 0xf;
853 type = endp->bmAttributes & 0x3;
854
855 if (ep == 0) {
856 trace_usb_host_parse_error(s->bus_num, s->addr,
857 "invalid endpoint address");
858 return;
859 }
860 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) {
861 trace_usb_host_parse_error(s->bus_num, s->addr,
862 "duplicate endpoint address");
863 return;
864 }
865
866 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep,
867 (devep & USB_DIR_IN) ? "in" : "out",
868 tname[type], true);
869 usb_ep_set_max_packet_size(udev, pid, ep,
870 endp->wMaxPacketSize);
871 usb_ep_set_type(udev, pid, ep, type);
872 usb_ep_set_ifnum(udev, pid, ep, i);
873 usb_ep_set_halted(udev, pid, ep, 0);
874 #ifdef HAVE_STREAMS
875 if (type == LIBUSB_TRANSFER_TYPE_BULK &&
876 libusb_get_ss_endpoint_companion_descriptor(ctx, endp,
877 &endp_ss_comp) == LIBUSB_SUCCESS) {
878 usb_ep_set_max_streams(udev, pid, ep,
879 endp_ss_comp->bmAttributes);
880 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp);
881 }
882 #endif
883 }
884 }
885
886 libusb_free_config_descriptor(conf);
887 }
888
889 static int usb_host_open(USBHostDevice *s, libusb_device *dev, int hostfd)
890 {
891 USBDevice *udev = USB_DEVICE(s);
892 int libusb_speed;
893 int bus_num = 0;
894 int addr = 0;
895 int rc;
896 Error *local_err = NULL;
897
898 if (s->bh_postld_pending) {
899 return -1;
900 }
901 if (s->dh != NULL) {
902 goto fail;
903 }
904
905 if (dev) {
906 bus_num = libusb_get_bus_number(dev);
907 addr = libusb_get_device_address(dev);
908 trace_usb_host_open_started(bus_num, addr);
909
910 rc = libusb_open(dev, &s->dh);
911 if (rc != 0) {
912 goto fail;
913 }
914 } else {
915 #if LIBUSB_API_VERSION >= 0x01000107 && !defined(CONFIG_WIN32)
916 trace_usb_host_open_hostfd(hostfd);
917
918 rc = libusb_wrap_sys_device(ctx, hostfd, &s->dh);
919 if (rc != 0) {
920 goto fail;
921 }
922 s->hostfd = hostfd;
923 dev = libusb_get_device(s->dh);
924 bus_num = libusb_get_bus_number(dev);
925 addr = libusb_get_device_address(dev);
926 #else
927 g_assert_not_reached();
928 #endif
929 }
930
931 s->dev = dev;
932 s->bus_num = bus_num;
933 s->addr = addr;
934
935 usb_host_detach_kernel(s);
936
937 libusb_get_device_descriptor(dev, &s->ddesc);
938 usb_host_get_port(s->dev, s->port, sizeof(s->port));
939
940 usb_ep_init(udev);
941 usb_host_ep_update(s);
942
943 libusb_speed = libusb_get_device_speed(dev);
944 #if LIBUSB_API_VERSION >= 0x01000107 && defined(CONFIG_LINUX)
945 if (hostfd && libusb_speed == 0) {
946 /*
947 * Workaround libusb bug: libusb_get_device_speed() does not
948 * work for libusb_wrap_sys_device() devices in v1.0.23.
949 *
950 * Speeds are defined in linux/usb/ch9.h, file not included
951 * due to name conflicts.
952 */
953 int rc = ioctl(hostfd, USBDEVFS_GET_SPEED, NULL);
954 switch (rc) {
955 case 1: /* low */
956 libusb_speed = LIBUSB_SPEED_LOW;
957 break;
958 case 2: /* full */
959 libusb_speed = LIBUSB_SPEED_FULL;
960 break;
961 case 3: /* high */
962 case 4: /* wireless */
963 libusb_speed = LIBUSB_SPEED_HIGH;
964 break;
965 case 5: /* super */
966 case 6: /* super plus */
967 libusb_speed = LIBUSB_SPEED_SUPER;
968 break;
969 }
970 }
971 #endif
972 udev->speed = speed_map[libusb_speed];
973 usb_host_speed_compat(s);
974
975 if (s->ddesc.iProduct) {
976 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct,
977 (unsigned char *)udev->product_desc,
978 sizeof(udev->product_desc));
979 } else {
980 snprintf(udev->product_desc, sizeof(udev->product_desc),
981 "host:%d.%d", bus_num, addr);
982 }
983
984 usb_device_attach(udev, &local_err);
985 if (local_err) {
986 error_report_err(local_err);
987 goto fail;
988 }
989
990 trace_usb_host_open_success(bus_num, addr);
991 return 0;
992
993 fail:
994 trace_usb_host_open_failure(bus_num, addr);
995 if (s->dh != NULL) {
996 usb_host_release_interfaces(s);
997 libusb_reset_device(s->dh);
998 usb_host_attach_kernel(s);
999 libusb_close(s->dh);
1000 s->dh = NULL;
1001 s->dev = NULL;
1002 }
1003 return -1;
1004 }
1005
1006 static void usb_host_abort_xfers(USBHostDevice *s)
1007 {
1008 USBHostRequest *r, *rtmp;
1009 int limit = 100;
1010
1011 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
1012 usb_host_req_abort(r);
1013 }
1014
1015 while (QTAILQ_FIRST(&s->requests) != NULL) {
1016 struct timeval tv;
1017 memset(&tv, 0, sizeof(tv));
1018 tv.tv_usec = 2500;
1019 libusb_handle_events_timeout(ctx, &tv);
1020 if (--limit == 0) {
1021 /*
1022 * Don't wait forever for libusb calling the complete
1023 * callback (which will unlink and free the request).
1024 *
1025 * Leaking memory here, to make sure libusb will not
1026 * access memory which we have released already.
1027 */
1028 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) {
1029 QTAILQ_REMOVE(&s->requests, r, next);
1030 }
1031 return;
1032 }
1033 }
1034 }
1035
1036 static int usb_host_close(USBHostDevice *s)
1037 {
1038 USBDevice *udev = USB_DEVICE(s);
1039
1040 if (s->dh == NULL) {
1041 return -1;
1042 }
1043
1044 trace_usb_host_close(s->bus_num, s->addr);
1045
1046 usb_host_abort_xfers(s);
1047 usb_host_iso_free_all(s);
1048
1049 if (udev->attached) {
1050 usb_device_detach(udev);
1051 }
1052
1053 usb_host_release_interfaces(s);
1054 libusb_reset_device(s->dh);
1055 usb_host_attach_kernel(s);
1056 libusb_close(s->dh);
1057 s->dh = NULL;
1058 s->dev = NULL;
1059
1060 if (s->hostfd != -1) {
1061 close(s->hostfd);
1062 s->hostfd = -1;
1063 }
1064
1065 usb_host_auto_check(NULL);
1066 return 0;
1067 }
1068
1069 static void usb_host_nodev_bh(void *opaque)
1070 {
1071 USBHostDevice *s = opaque;
1072 usb_host_close(s);
1073 }
1074
1075 static void usb_host_nodev(USBHostDevice *s)
1076 {
1077 if (!s->bh_nodev) {
1078 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s);
1079 }
1080 qemu_bh_schedule(s->bh_nodev);
1081 }
1082
1083 static void usb_host_exit_notifier(struct Notifier *n, void *data)
1084 {
1085 USBHostDevice *s = container_of(n, USBHostDevice, exit);
1086
1087 if (s->dh) {
1088 usb_host_abort_xfers(s);
1089 usb_host_release_interfaces(s);
1090 libusb_reset_device(s->dh);
1091 usb_host_attach_kernel(s);
1092 libusb_close(s->dh);
1093 }
1094 }
1095
1096 static libusb_device *usb_host_find_ref(int bus, int addr)
1097 {
1098 libusb_device **devs = NULL;
1099 libusb_device *ret = NULL;
1100 int i, n;
1101
1102 n = libusb_get_device_list(ctx, &devs);
1103 for (i = 0; i < n; i++) {
1104 if (libusb_get_bus_number(devs[i]) == bus &&
1105 libusb_get_device_address(devs[i]) == addr) {
1106 ret = libusb_ref_device(devs[i]);
1107 break;
1108 }
1109 }
1110 libusb_free_device_list(devs, 1);
1111 return ret;
1112 }
1113
1114 static void usb_host_realize(USBDevice *udev, Error **errp)
1115 {
1116 USBHostDevice *s = USB_HOST_DEVICE(udev);
1117 libusb_device *ldev;
1118 int rc;
1119
1120 if (usb_host_init() != 0) {
1121 error_setg(errp, "failed to init libusb");
1122 return;
1123 }
1124 if (s->match.vendor_id > 0xffff) {
1125 error_setg(errp, "vendorid out of range");
1126 return;
1127 }
1128 if (s->match.product_id > 0xffff) {
1129 error_setg(errp, "productid out of range");
1130 return;
1131 }
1132 if (s->match.addr > 127) {
1133 error_setg(errp, "hostaddr out of range");
1134 return;
1135 }
1136
1137 loglevel = s->loglevel;
1138 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST);
1139 udev->auto_attach = 0;
1140 QTAILQ_INIT(&s->requests);
1141 QTAILQ_INIT(&s->isorings);
1142 s->hostfd = -1;
1143
1144 #if LIBUSB_API_VERSION >= 0x01000107 && !defined(CONFIG_WIN32)
1145 if (s->hostdevice) {
1146 int fd;
1147 s->needs_autoscan = false;
1148 fd = qemu_open_old(s->hostdevice, O_RDWR);
1149 if (fd < 0) {
1150 error_setg_errno(errp, errno, "failed to open %s", s->hostdevice);
1151 return;
1152 }
1153 rc = usb_host_open(s, NULL, fd);
1154 if (rc < 0) {
1155 error_setg(errp, "failed to open host usb device %s", s->hostdevice);
1156 return;
1157 }
1158 } else
1159 #endif
1160 if (s->match.addr && s->match.bus_num &&
1161 !s->match.vendor_id &&
1162 !s->match.product_id &&
1163 !s->match.port) {
1164 s->needs_autoscan = false;
1165 ldev = usb_host_find_ref(s->match.bus_num,
1166 s->match.addr);
1167 if (!ldev) {
1168 error_setg(errp, "failed to find host usb device %d:%d",
1169 s->match.bus_num, s->match.addr);
1170 return;
1171 }
1172 rc = usb_host_open(s, ldev, 0);
1173 libusb_unref_device(ldev);
1174 if (rc < 0) {
1175 error_setg(errp, "failed to open host usb device %d:%d",
1176 s->match.bus_num, s->match.addr);
1177 return;
1178 }
1179 } else {
1180 s->needs_autoscan = true;
1181 QTAILQ_INSERT_TAIL(&hostdevs, s, next);
1182 usb_host_auto_check(NULL);
1183 }
1184
1185 s->exit.notify = usb_host_exit_notifier;
1186 qemu_add_exit_notifier(&s->exit);
1187 }
1188
1189 static void usb_host_instance_init(Object *obj)
1190 {
1191 USBDevice *udev = USB_DEVICE(obj);
1192 USBHostDevice *s = USB_HOST_DEVICE(udev);
1193
1194 device_add_bootindex_property(obj, &s->bootindex,
1195 "bootindex", NULL,
1196 &udev->qdev);
1197 }
1198
1199 static void usb_host_unrealize(USBDevice *udev)
1200 {
1201 USBHostDevice *s = USB_HOST_DEVICE(udev);
1202
1203 qemu_remove_exit_notifier(&s->exit);
1204 if (s->needs_autoscan) {
1205 QTAILQ_REMOVE(&hostdevs, s, next);
1206 }
1207 usb_host_close(s);
1208 }
1209
1210 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p)
1211 {
1212 USBHostDevice *s = USB_HOST_DEVICE(udev);
1213 USBHostRequest *r;
1214
1215 if (p->combined) {
1216 usb_combined_packet_cancel(udev, p);
1217 return;
1218 }
1219
1220 trace_usb_host_req_canceled(s->bus_num, s->addr, p);
1221
1222 r = usb_host_req_find(s, p);
1223 if (r && r->p) {
1224 r->p = NULL; /* mark as dead */
1225 libusb_cancel_transfer(r->xfer);
1226 }
1227 }
1228
1229 static void usb_host_detach_kernel(USBHostDevice *s)
1230 {
1231 struct libusb_config_descriptor *conf;
1232 int rc, i;
1233
1234 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1235 if (rc != 0) {
1236 return;
1237 }
1238 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1239 rc = libusb_kernel_driver_active(s->dh, i);
1240 usb_host_libusb_error("libusb_kernel_driver_active", rc);
1241 if (rc != 1) {
1242 if (rc == 0) {
1243 s->ifs[i].detached = true;
1244 }
1245 continue;
1246 }
1247 trace_usb_host_detach_kernel(s->bus_num, s->addr, i);
1248 rc = libusb_detach_kernel_driver(s->dh, i);
1249 usb_host_libusb_error("libusb_detach_kernel_driver", rc);
1250 s->ifs[i].detached = true;
1251 }
1252 libusb_free_config_descriptor(conf);
1253 }
1254
1255 static void usb_host_attach_kernel(USBHostDevice *s)
1256 {
1257 struct libusb_config_descriptor *conf;
1258 int rc, i;
1259
1260 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1261 if (rc != 0) {
1262 return;
1263 }
1264 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1265 if (!s->ifs[i].detached) {
1266 continue;
1267 }
1268 trace_usb_host_attach_kernel(s->bus_num, s->addr, i);
1269 libusb_attach_kernel_driver(s->dh, i);
1270 s->ifs[i].detached = false;
1271 }
1272 libusb_free_config_descriptor(conf);
1273 }
1274
1275 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration)
1276 {
1277 USBDevice *udev = USB_DEVICE(s);
1278 struct libusb_config_descriptor *conf;
1279 int rc, i, claimed;
1280
1281 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1282 udev->altsetting[i] = 0;
1283 }
1284 udev->ninterfaces = 0;
1285 udev->configuration = 0;
1286
1287 usb_host_detach_kernel(s);
1288
1289 rc = libusb_get_active_config_descriptor(s->dev, &conf);
1290 if (rc != 0) {
1291 if (rc == LIBUSB_ERROR_NOT_FOUND) {
1292 /* address state - ignore */
1293 return USB_RET_SUCCESS;
1294 }
1295 return USB_RET_STALL;
1296 }
1297
1298 claimed = 0;
1299 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1300 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i);
1301 rc = libusb_claim_interface(s->dh, i);
1302 if (rc == 0) {
1303 s->ifs[i].claimed = true;
1304 if (++claimed == conf->bNumInterfaces) {
1305 break;
1306 }
1307 }
1308 }
1309 if (claimed != conf->bNumInterfaces) {
1310 return USB_RET_STALL;
1311 }
1312
1313 udev->ninterfaces = conf->bNumInterfaces;
1314 udev->configuration = configuration;
1315
1316 libusb_free_config_descriptor(conf);
1317 return USB_RET_SUCCESS;
1318 }
1319
1320 static void usb_host_release_interfaces(USBHostDevice *s)
1321 {
1322 int i, rc;
1323
1324 for (i = 0; i < USB_MAX_INTERFACES; i++) {
1325 if (!s->ifs[i].claimed) {
1326 continue;
1327 }
1328 trace_usb_host_release_interface(s->bus_num, s->addr, i);
1329 rc = libusb_release_interface(s->dh, i);
1330 usb_host_libusb_error("libusb_release_interface", rc);
1331 s->ifs[i].claimed = false;
1332 }
1333 }
1334
1335 static void usb_host_set_address(USBHostDevice *s, int addr)
1336 {
1337 USBDevice *udev = USB_DEVICE(s);
1338
1339 trace_usb_host_set_address(s->bus_num, s->addr, addr);
1340 udev->addr = addr;
1341 }
1342
1343 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p)
1344 {
1345 int rc = 0;
1346
1347 trace_usb_host_set_config(s->bus_num, s->addr, config);
1348
1349 usb_host_release_interfaces(s);
1350 if (s->ddesc.bNumConfigurations != 1) {
1351 rc = libusb_set_configuration(s->dh, config);
1352 if (rc != 0) {
1353 usb_host_libusb_error("libusb_set_configuration", rc);
1354 p->status = USB_RET_STALL;
1355 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1356 usb_host_nodev(s);
1357 }
1358 return;
1359 }
1360 }
1361 p->status = usb_host_claim_interfaces(s, config);
1362 if (p->status != USB_RET_SUCCESS) {
1363 return;
1364 }
1365 usb_host_ep_update(s);
1366 }
1367
1368 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt,
1369 USBPacket *p)
1370 {
1371 USBDevice *udev = USB_DEVICE(s);
1372 int rc;
1373
1374 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt);
1375
1376 usb_host_iso_free_all(s);
1377
1378 if (iface >= USB_MAX_INTERFACES) {
1379 p->status = USB_RET_STALL;
1380 return;
1381 }
1382
1383 rc = libusb_set_interface_alt_setting(s->dh, iface, alt);
1384 if (rc != 0) {
1385 usb_host_libusb_error("libusb_set_interface_alt_setting", rc);
1386 p->status = USB_RET_STALL;
1387 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1388 usb_host_nodev(s);
1389 }
1390 return;
1391 }
1392
1393 udev->altsetting[iface] = alt;
1394 usb_host_ep_update(s);
1395 }
1396
1397 static void usb_host_handle_control(USBDevice *udev, USBPacket *p,
1398 int request, int value, int index,
1399 int length, uint8_t *data)
1400 {
1401 USBHostDevice *s = USB_HOST_DEVICE(udev);
1402 USBHostRequest *r;
1403 int rc;
1404
1405 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index);
1406
1407 if (s->dh == NULL) {
1408 p->status = USB_RET_NODEV;
1409 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1410 return;
1411 }
1412
1413 switch (request) {
1414 case DeviceOutRequest | USB_REQ_SET_ADDRESS:
1415 usb_host_set_address(s, value);
1416 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1417 return;
1418
1419 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION:
1420 usb_host_set_config(s, value & 0xff, p);
1421 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1422 return;
1423
1424 case InterfaceOutRequest | USB_REQ_SET_INTERFACE:
1425 usb_host_set_interface(s, index, value, p);
1426 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1427 return;
1428
1429 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE:
1430 if (value == 0) { /* clear halt */
1431 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT;
1432 libusb_clear_halt(s->dh, index);
1433 usb_ep_set_halted(udev, pid, index & 0x0f, 0);
1434 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1435 return;
1436 }
1437 }
1438
1439 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8);
1440 r->cbuf = data;
1441 r->clen = length;
1442 memcpy(r->buffer, udev->setup_buf, 8);
1443 if (!r->in) {
1444 memcpy(r->buffer + 8, r->cbuf, r->clen);
1445 }
1446
1447 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices
1448 * to work redirected to a not superspeed capable hcd */
1449 if ((udev->speedmask & USB_SPEED_MASK_SUPER) &&
1450 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) &&
1451 request == 0x8006 && value == 0x100 && index == 0) {
1452 r->usb3ep0quirk = true;
1453 }
1454
1455 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer,
1456 usb_host_req_complete_ctrl, r,
1457 CONTROL_TIMEOUT);
1458 rc = libusb_submit_transfer(r->xfer);
1459 if (rc != 0) {
1460 p->status = USB_RET_NODEV;
1461 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1462 p->status, p->actual_length);
1463 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1464 usb_host_nodev(s);
1465 }
1466 return;
1467 }
1468
1469 p->status = USB_RET_ASYNC;
1470 }
1471
1472 static void usb_host_handle_data(USBDevice *udev, USBPacket *p)
1473 {
1474 USBHostDevice *s = USB_HOST_DEVICE(udev);
1475 USBHostRequest *r;
1476 size_t size;
1477 int ep, rc;
1478
1479 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) {
1480 p->status = USB_RET_ADD_TO_QUEUE;
1481 return;
1482 }
1483
1484 trace_usb_host_req_data(s->bus_num, s->addr, p,
1485 p->pid == USB_TOKEN_IN,
1486 p->ep->nr, p->iov.size);
1487
1488 if (s->dh == NULL) {
1489 p->status = USB_RET_NODEV;
1490 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1491 return;
1492 }
1493 if (p->ep->halted) {
1494 p->status = USB_RET_STALL;
1495 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status);
1496 return;
1497 }
1498
1499 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) {
1500 case USB_ENDPOINT_XFER_BULK:
1501 size = usb_packet_size(p);
1502 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size);
1503 if (!r->in) {
1504 usb_packet_copy(p, r->buffer, size);
1505 }
1506 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1507 if (p->stream) {
1508 #ifdef HAVE_STREAMS
1509 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream,
1510 r->buffer, size,
1511 usb_host_req_complete_data, r,
1512 BULK_TIMEOUT);
1513 #else
1514 usb_host_req_free(r);
1515 p->status = USB_RET_STALL;
1516 return;
1517 #endif
1518 } else {
1519 libusb_fill_bulk_transfer(r->xfer, s->dh, ep,
1520 r->buffer, size,
1521 usb_host_req_complete_data, r,
1522 BULK_TIMEOUT);
1523 }
1524 break;
1525 case USB_ENDPOINT_XFER_INT:
1526 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size);
1527 if (!r->in) {
1528 usb_packet_copy(p, r->buffer, p->iov.size);
1529 }
1530 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0);
1531 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep,
1532 r->buffer, p->iov.size,
1533 usb_host_req_complete_data, r,
1534 INTR_TIMEOUT);
1535 break;
1536 case USB_ENDPOINT_XFER_ISOC:
1537 if (p->pid == USB_TOKEN_IN) {
1538 usb_host_iso_data_in(s, p);
1539 } else {
1540 usb_host_iso_data_out(s, p);
1541 }
1542 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1543 p->status, p->actual_length);
1544 return;
1545 default:
1546 p->status = USB_RET_STALL;
1547 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1548 p->status, p->actual_length);
1549 return;
1550 }
1551
1552 rc = libusb_submit_transfer(r->xfer);
1553 if (rc != 0) {
1554 p->status = USB_RET_NODEV;
1555 trace_usb_host_req_complete(s->bus_num, s->addr, p,
1556 p->status, p->actual_length);
1557 if (rc == LIBUSB_ERROR_NO_DEVICE) {
1558 usb_host_nodev(s);
1559 }
1560 return;
1561 }
1562
1563 p->status = USB_RET_ASYNC;
1564 }
1565
1566 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep)
1567 {
1568 if (usb_host_use_combining(ep)) {
1569 usb_ep_combine_input_packets(ep);
1570 }
1571 }
1572
1573 static void usb_host_handle_reset(USBDevice *udev)
1574 {
1575 USBHostDevice *s = USB_HOST_DEVICE(udev);
1576 int rc;
1577
1578 if (!s->allow_one_guest_reset && !s->allow_all_guest_resets) {
1579 return;
1580 }
1581 if (!s->allow_all_guest_resets && udev->addr == 0) {
1582 return;
1583 }
1584
1585 trace_usb_host_reset(s->bus_num, s->addr);
1586
1587 rc = libusb_reset_device(s->dh);
1588 if (rc != 0) {
1589 usb_host_nodev(s);
1590 }
1591 }
1592
1593 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps,
1594 int nr_eps, int streams)
1595 {
1596 #ifdef HAVE_STREAMS
1597 USBHostDevice *s = USB_HOST_DEVICE(udev);
1598 unsigned char endpoints[30];
1599 int i, rc;
1600
1601 for (i = 0; i < nr_eps; i++) {
1602 endpoints[i] = eps[i]->nr;
1603 if (eps[i]->pid == USB_TOKEN_IN) {
1604 endpoints[i] |= 0x80;
1605 }
1606 }
1607 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps);
1608 if (rc < 0) {
1609 usb_host_libusb_error("libusb_alloc_streams", rc);
1610 } else if (rc != streams) {
1611 error_report("libusb_alloc_streams: got less streams "
1612 "then requested %d < %d", rc, streams);
1613 }
1614
1615 return (rc == streams) ? 0 : -1;
1616 #else
1617 error_report("libusb_alloc_streams: error not implemented");
1618 return -1;
1619 #endif
1620 }
1621
1622 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps,
1623 int nr_eps)
1624 {
1625 #ifdef HAVE_STREAMS
1626 USBHostDevice *s = USB_HOST_DEVICE(udev);
1627 unsigned char endpoints[30];
1628 int i;
1629
1630 for (i = 0; i < nr_eps; i++) {
1631 endpoints[i] = eps[i]->nr;
1632 if (eps[i]->pid == USB_TOKEN_IN) {
1633 endpoints[i] |= 0x80;
1634 }
1635 }
1636 libusb_free_streams(s->dh, endpoints, nr_eps);
1637 #endif
1638 }
1639
1640 /*
1641 * This is *NOT* about restoring state. We have absolutely no idea
1642 * what state the host device is in at the moment and whenever it is
1643 * still present in the first place. Attemping to contine where we
1644 * left off is impossible.
1645 *
1646 * What we are going to do here is emulate a surprise removal of
1647 * the usb device passed through, then kick host scan so the device
1648 * will get re-attached (and re-initialized by the guest) in case it
1649 * is still present.
1650 *
1651 * As the device removal will change the state of other devices (usb
1652 * host controller, most likely interrupt controller too) we have to
1653 * wait with it until *all* vmstate is loaded. Thus post_load just
1654 * kicks a bottom half which then does the actual work.
1655 */
1656 static void usb_host_post_load_bh(void *opaque)
1657 {
1658 USBHostDevice *dev = opaque;
1659 USBDevice *udev = USB_DEVICE(dev);
1660
1661 if (dev->dh != NULL) {
1662 usb_host_close(dev);
1663 }
1664 if (udev->attached) {
1665 usb_device_detach(udev);
1666 }
1667 dev->bh_postld_pending = false;
1668 usb_host_auto_check(NULL);
1669 }
1670
1671 static int usb_host_post_load(void *opaque, int version_id)
1672 {
1673 USBHostDevice *dev = opaque;
1674
1675 if (!dev->bh_postld) {
1676 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev);
1677 }
1678 qemu_bh_schedule(dev->bh_postld);
1679 dev->bh_postld_pending = true;
1680 return 0;
1681 }
1682
1683 static const VMStateDescription vmstate_usb_host = {
1684 .name = "usb-host",
1685 .version_id = 1,
1686 .minimum_version_id = 1,
1687 .post_load = usb_host_post_load,
1688 .fields = (VMStateField[]) {
1689 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice),
1690 VMSTATE_END_OF_LIST()
1691 }
1692 };
1693
1694 static Property usb_host_dev_properties[] = {
1695 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0),
1696 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0),
1697 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port),
1698 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0),
1699 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0),
1700 #if LIBUSB_API_VERSION >= 0x01000107
1701 DEFINE_PROP_STRING("hostdevice", USBHostDevice, hostdevice),
1702 #endif
1703 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4),
1704 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32),
1705 DEFINE_PROP_BOOL("guest-reset", USBHostDevice,
1706 allow_one_guest_reset, true),
1707 DEFINE_PROP_BOOL("guest-resets-all", USBHostDevice,
1708 allow_all_guest_resets, false),
1709 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel,
1710 LIBUSB_LOG_LEVEL_WARNING),
1711 DEFINE_PROP_BIT("pipeline", USBHostDevice, options,
1712 USB_HOST_OPT_PIPELINE, true),
1713 DEFINE_PROP_BOOL("suppress-remote-wake", USBHostDevice,
1714 suppress_remote_wake, true),
1715 DEFINE_PROP_END_OF_LIST(),
1716 };
1717
1718 static void usb_host_class_initfn(ObjectClass *klass, void *data)
1719 {
1720 DeviceClass *dc = DEVICE_CLASS(klass);
1721 USBDeviceClass *uc = USB_DEVICE_CLASS(klass);
1722
1723 uc->realize = usb_host_realize;
1724 uc->product_desc = "USB Host Device";
1725 uc->cancel_packet = usb_host_cancel_packet;
1726 uc->handle_data = usb_host_handle_data;
1727 uc->handle_control = usb_host_handle_control;
1728 uc->handle_reset = usb_host_handle_reset;
1729 uc->unrealize = usb_host_unrealize;
1730 uc->flush_ep_queue = usb_host_flush_ep_queue;
1731 uc->alloc_streams = usb_host_alloc_streams;
1732 uc->free_streams = usb_host_free_streams;
1733 dc->vmsd = &vmstate_usb_host;
1734 device_class_set_props(dc, usb_host_dev_properties);
1735 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories);
1736 }
1737
1738 static TypeInfo usb_host_dev_info = {
1739 .name = TYPE_USB_HOST_DEVICE,
1740 .parent = TYPE_USB_DEVICE,
1741 .instance_size = sizeof(USBHostDevice),
1742 .class_init = usb_host_class_initfn,
1743 .instance_init = usb_host_instance_init,
1744 };
1745
1746 static void usb_host_register_types(void)
1747 {
1748 type_register_static(&usb_host_dev_info);
1749 }
1750
1751 type_init(usb_host_register_types)
1752
1753 /* ------------------------------------------------------------------------ */
1754
1755 static QEMUTimer *usb_auto_timer;
1756 static VMChangeStateEntry *usb_vmstate;
1757
1758 static void usb_host_vm_state(void *unused, int running, RunState state)
1759 {
1760 if (running) {
1761 usb_host_auto_check(unused);
1762 }
1763 }
1764
1765 static void usb_host_auto_check(void *unused)
1766 {
1767 struct USBHostDevice *s;
1768 struct USBAutoFilter *f;
1769 libusb_device **devs = NULL;
1770 struct libusb_device_descriptor ddesc;
1771 int unconnected = 0;
1772 int i, n;
1773
1774 if (usb_host_init() != 0) {
1775 return;
1776 }
1777
1778 if (runstate_is_running()) {
1779 n = libusb_get_device_list(ctx, &devs);
1780 for (i = 0; i < n; i++) {
1781 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1782 continue;
1783 }
1784 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1785 continue;
1786 }
1787 QTAILQ_FOREACH(s, &hostdevs, next) {
1788 f = &s->match;
1789 if (f->bus_num > 0 &&
1790 f->bus_num != libusb_get_bus_number(devs[i])) {
1791 continue;
1792 }
1793 if (f->addr > 0 &&
1794 f->addr != libusb_get_device_address(devs[i])) {
1795 continue;
1796 }
1797 if (f->port != NULL) {
1798 char port[16] = "-";
1799 usb_host_get_port(devs[i], port, sizeof(port));
1800 if (strcmp(f->port, port) != 0) {
1801 continue;
1802 }
1803 }
1804 if (f->vendor_id > 0 &&
1805 f->vendor_id != ddesc.idVendor) {
1806 continue;
1807 }
1808 if (f->product_id > 0 &&
1809 f->product_id != ddesc.idProduct) {
1810 continue;
1811 }
1812
1813 /* We got a match */
1814 s->seen++;
1815 if (s->errcount >= 3) {
1816 continue;
1817 }
1818 if (s->dh != NULL) {
1819 continue;
1820 }
1821 if (usb_host_open(s, devs[i], 0) < 0) {
1822 s->errcount++;
1823 continue;
1824 }
1825 break;
1826 }
1827 }
1828 libusb_free_device_list(devs, 1);
1829
1830 QTAILQ_FOREACH(s, &hostdevs, next) {
1831 if (s->dh == NULL) {
1832 unconnected++;
1833 }
1834 if (s->seen == 0) {
1835 if (s->dh) {
1836 usb_host_close(s);
1837 }
1838 s->errcount = 0;
1839 }
1840 s->seen = 0;
1841 }
1842
1843 #if 0
1844 if (unconnected == 0) {
1845 /* nothing to watch */
1846 if (usb_auto_timer) {
1847 timer_del(usb_auto_timer);
1848 trace_usb_host_auto_scan_disabled();
1849 }
1850 return;
1851 }
1852 #endif
1853 }
1854
1855 if (!usb_vmstate) {
1856 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL);
1857 }
1858 if (!usb_auto_timer) {
1859 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL);
1860 if (!usb_auto_timer) {
1861 return;
1862 }
1863 trace_usb_host_auto_scan_enabled();
1864 }
1865 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000);
1866 }
1867
1868 /**
1869 * Check whether USB host device has a USB mass storage SCSI interface
1870 */
1871 bool usb_host_dev_is_scsi_storage(USBDevice *ud)
1872 {
1873 USBHostDevice *uhd = USB_HOST_DEVICE(ud);
1874 struct libusb_config_descriptor *conf;
1875 const struct libusb_interface_descriptor *intf;
1876 bool is_scsi_storage = false;
1877 int i;
1878
1879 if (!uhd || libusb_get_active_config_descriptor(uhd->dev, &conf) != 0) {
1880 return false;
1881 }
1882
1883 for (i = 0; i < conf->bNumInterfaces; i++) {
1884 intf = &conf->interface[i].altsetting[ud->altsetting[i]];
1885 if (intf->bInterfaceClass == LIBUSB_CLASS_MASS_STORAGE &&
1886 intf->bInterfaceSubClass == 6) { /* 6 means SCSI */
1887 is_scsi_storage = true;
1888 break;
1889 }
1890 }
1891
1892 libusb_free_config_descriptor(conf);
1893
1894 return is_scsi_storage;
1895 }
1896
1897 void hmp_info_usbhost(Monitor *mon, const QDict *qdict)
1898 {
1899 libusb_device **devs = NULL;
1900 struct libusb_device_descriptor ddesc;
1901 char port[16];
1902 int i, n;
1903
1904 if (usb_host_init() != 0) {
1905 return;
1906 }
1907
1908 n = libusb_get_device_list(ctx, &devs);
1909 for (i = 0; i < n; i++) {
1910 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) {
1911 continue;
1912 }
1913 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) {
1914 continue;
1915 }
1916 usb_host_get_port(devs[i], port, sizeof(port));
1917 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n",
1918 libusb_get_bus_number(devs[i]),
1919 libusb_get_device_address(devs[i]),
1920 port,
1921 speed_name[libusb_get_device_speed(devs[i])]);
1922 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass);
1923 monitor_printf(mon, " USB device %04x:%04x",
1924 ddesc.idVendor, ddesc.idProduct);
1925 if (ddesc.iProduct) {
1926 libusb_device_handle *handle;
1927 if (libusb_open(devs[i], &handle) == 0) {
1928 unsigned char name[64] = "";
1929 libusb_get_string_descriptor_ascii(handle,
1930 ddesc.iProduct,
1931 name, sizeof(name));
1932 libusb_close(handle);
1933 monitor_printf(mon, ", %s", name);
1934 }
1935 }
1936 monitor_printf(mon, "\n");
1937 }
1938 libusb_free_device_list(devs, 1);
1939 }
AR7 emulation for QEMU