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; 98 Notifier exit; 99 100 /* request queues */ 101 QTAILQ_HEAD(, USBHostRequest) requests; 102 QTAILQ_HEAD(, USBHostIsoRing) isorings; 103 }; 104 105 struct USBHostRequest { 106 USBHostDevice *host; 107 USBPacket *p; 108 bool in; 109 struct libusb_transfer *xfer; 110 unsigned char *buffer; 111 unsigned char *cbuf; 112 unsigned int clen; 113 QTAILQ_ENTRY(USBHostRequest) next; 114 }; 115 116 struct USBHostIsoXfer { 117 USBHostIsoRing *ring; 118 struct libusb_transfer *xfer; 119 bool copy_complete; 120 unsigned int packet; 121 QTAILQ_ENTRY(USBHostIsoXfer) next; 122 }; 123 124 struct USBHostIsoRing { 125 USBHostDevice *host; 126 USBEndpoint *ep; 127 QTAILQ_HEAD(, USBHostIsoXfer) unused; 128 QTAILQ_HEAD(, USBHostIsoXfer) inflight; 129 QTAILQ_HEAD(, USBHostIsoXfer) copy; 130 QTAILQ_ENTRY(USBHostIsoRing) next; 131 }; 132 133 static QTAILQ_HEAD(, USBHostDevice) hostdevs = 134 QTAILQ_HEAD_INITIALIZER(hostdevs); 135 136 static void usb_host_auto_check(void *unused); 137 static void usb_host_release_interfaces(USBHostDevice *s); 138 static void usb_host_nodev(USBHostDevice *s); 139 static void usb_host_attach_kernel(USBHostDevice *s); 140 141 /* ------------------------------------------------------------------------ */ 142 143 #define CONTROL_TIMEOUT 10000 /* 10 sec */ 144 #define BULK_TIMEOUT 0 /* unlimited */ 145 #define INTR_TIMEOUT 0 /* unlimited */ 146 147 static const char *speed_name[] = { 148 [LIBUSB_SPEED_UNKNOWN] = "?", 149 [LIBUSB_SPEED_LOW] = "1.5", 150 [LIBUSB_SPEED_FULL] = "12", 151 [LIBUSB_SPEED_HIGH] = "480", 152 [LIBUSB_SPEED_SUPER] = "5000", 153 }; 154 155 static const unsigned int speed_map[] = { 156 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW, 157 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL, 158 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH, 159 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER, 160 }; 161 162 static const unsigned int status_map[] = { 163 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS, 164 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR, 165 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR, 166 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR, 167 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL, 168 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV, 169 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE, 170 }; 171 172 static const char *err_names[] = { 173 [-LIBUSB_ERROR_IO] = "IO", 174 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM", 175 [-LIBUSB_ERROR_ACCESS] = "ACCESS", 176 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE", 177 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND", 178 [-LIBUSB_ERROR_BUSY] = "BUSY", 179 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT", 180 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW", 181 [-LIBUSB_ERROR_PIPE] = "PIPE", 182 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED", 183 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM", 184 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED", 185 [-LIBUSB_ERROR_OTHER] = "OTHER", 186 }; 187 188 static libusb_context *ctx; 189 static uint32_t loglevel; 190 191 static void usb_host_handle_fd(void *opaque) 192 { 193 struct timeval tv = { 0, 0 }; 194 libusb_handle_events_timeout(ctx, &tv); 195 } 196 197 static void usb_host_add_fd(int fd, short events, void *user_data) 198 { 199 qemu_set_fd_handler(fd, 200 (events & POLLIN) ? usb_host_handle_fd : NULL, 201 (events & POLLOUT) ? usb_host_handle_fd : NULL, 202 ctx); 203 } 204 205 static void usb_host_del_fd(int fd, void *user_data) 206 { 207 qemu_set_fd_handler(fd, NULL, NULL, NULL); 208 } 209 210 static int usb_host_init(void) 211 { 212 const struct libusb_pollfd **poll; 213 int i, rc; 214 215 if (ctx) { 216 return 0; 217 } 218 rc = libusb_init(&ctx); 219 if (rc != 0) { 220 return -1; 221 } 222 libusb_set_debug(ctx, loglevel); 223 224 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd, 225 usb_host_del_fd, 226 ctx); 227 poll = libusb_get_pollfds(ctx); 228 if (poll) { 229 for (i = 0; poll[i] != NULL; i++) { 230 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx); 231 } 232 } 233 free(poll); 234 return 0; 235 } 236 237 static int usb_host_get_port(libusb_device *dev, char *port, size_t len) 238 { 239 #if defined(LIBUSBX_API_VERSION) && (LIBUSBX_API_VERSION >= 0x010000ff) 240 /* have libusb_get_port_path() */ 241 uint8_t path[7]; 242 size_t off; 243 int rc, i; 244 245 rc = libusb_get_port_path(ctx, dev, path, 7); 246 if (rc < 0) { 247 return 0; 248 } 249 off = snprintf(port, len, "%d", path[0]); 250 for (i = 1; i < rc; i++) { 251 off += snprintf(port+off, len-off, ".%d", path[i]); 252 } 253 return off; 254 #else 255 return snprintf(port, len, "FIXME"); 256 #endif 257 } 258 259 static void usb_host_libusb_error(const char *func, int rc) 260 { 261 const char *errname; 262 263 if (rc >= 0) { 264 return; 265 } 266 267 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) { 268 errname = err_names[-rc]; 269 } else { 270 errname = "?"; 271 } 272 fprintf(stderr, "%s: %d [%s]\n", func, rc, errname); 273 } 274 275 /* ------------------------------------------------------------------------ */ 276 277 static bool usb_host_use_combining(USBEndpoint *ep) 278 { 279 int type; 280 281 if (!ep->pipeline) { 282 return false; 283 } 284 if (ep->pid != USB_TOKEN_IN) { 285 return false; 286 } 287 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr); 288 if (type != USB_ENDPOINT_XFER_BULK) { 289 return false; 290 } 291 return true; 292 } 293 294 /* ------------------------------------------------------------------------ */ 295 296 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p, 297 bool in, size_t bufsize) 298 { 299 USBHostRequest *r = g_new0(USBHostRequest, 1); 300 301 r->host = s; 302 r->p = p; 303 r->in = in; 304 r->xfer = libusb_alloc_transfer(0); 305 if (bufsize) { 306 r->buffer = g_malloc(bufsize); 307 } 308 QTAILQ_INSERT_TAIL(&s->requests, r, next); 309 return r; 310 } 311 312 static void usb_host_req_free(USBHostRequest *r) 313 { 314 if (r->host) { 315 QTAILQ_REMOVE(&r->host->requests, r, next); 316 } 317 libusb_free_transfer(r->xfer); 318 g_free(r->buffer); 319 g_free(r); 320 } 321 322 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p) 323 { 324 USBHostRequest *r; 325 326 QTAILQ_FOREACH(r, &s->requests, next) { 327 if (r->p == p) { 328 return r; 329 } 330 } 331 return NULL; 332 } 333 334 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer) 335 { 336 USBHostRequest *r = xfer->user_data; 337 USBHostDevice *s = r->host; 338 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 339 340 if (r->p == NULL) { 341 goto out; /* request was canceled */ 342 } 343 344 r->p->status = status_map[xfer->status]; 345 r->p->actual_length = xfer->actual_length; 346 if (r->in && xfer->actual_length) { 347 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length); 348 } 349 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 350 r->p->status, r->p->actual_length); 351 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 352 353 out: 354 usb_host_req_free(r); 355 if (disconnect) { 356 usb_host_nodev(s); 357 } 358 } 359 360 static void usb_host_req_complete_data(struct libusb_transfer *xfer) 361 { 362 USBHostRequest *r = xfer->user_data; 363 USBHostDevice *s = r->host; 364 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 365 366 if (r->p == NULL) { 367 goto out; /* request was canceled */ 368 } 369 370 r->p->status = status_map[xfer->status]; 371 if (r->in && xfer->actual_length) { 372 usb_packet_copy(r->p, r->buffer, xfer->actual_length); 373 } 374 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 375 r->p->status, r->p->actual_length); 376 if (usb_host_use_combining(r->p->ep)) { 377 usb_combined_input_packet_complete(USB_DEVICE(s), r->p); 378 } else { 379 usb_packet_complete(USB_DEVICE(s), r->p); 380 } 381 382 out: 383 usb_host_req_free(r); 384 if (disconnect) { 385 usb_host_nodev(s); 386 } 387 } 388 389 static void usb_host_req_abort(USBHostRequest *r) 390 { 391 USBHostDevice *s = r->host; 392 bool inflight = (r->p && r->p->state == USB_RET_ASYNC); 393 394 if (inflight) { 395 r->p->status = USB_RET_NODEV; 396 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 397 r->p->status, r->p->actual_length); 398 if (r->p->ep->nr == 0) { 399 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 400 } else { 401 usb_packet_complete(USB_DEVICE(s), r->p); 402 } 403 r->p = NULL; 404 } 405 406 QTAILQ_REMOVE(&r->host->requests, r, next); 407 r->host = NULL; 408 409 if (inflight) { 410 libusb_cancel_transfer(r->xfer); 411 } 412 } 413 414 /* ------------------------------------------------------------------------ */ 415 416 static void usb_host_req_complete_iso(struct libusb_transfer *transfer) 417 { 418 USBHostIsoXfer *xfer = transfer->user_data; 419 420 if (!xfer) { 421 /* USBHostIsoXfer released while inflight */ 422 g_free(transfer->buffer); 423 libusb_free_transfer(transfer); 424 return; 425 } 426 427 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next); 428 if (QTAILQ_EMPTY(&xfer->ring->inflight)) { 429 USBHostDevice *s = xfer->ring->host; 430 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr); 431 } 432 if (xfer->ring->ep->pid == USB_TOKEN_IN) { 433 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next); 434 } else { 435 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next); 436 } 437 } 438 439 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep) 440 { 441 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1); 442 USBHostIsoXfer *xfer; 443 /* FIXME: check interval (for now assume one xfer per frame) */ 444 int packets = s->iso_urb_frames; 445 int i; 446 447 ring->host = s; 448 ring->ep = ep; 449 QTAILQ_INIT(&ring->unused); 450 QTAILQ_INIT(&ring->inflight); 451 QTAILQ_INIT(&ring->copy); 452 QTAILQ_INSERT_TAIL(&s->isorings, ring, next); 453 454 for (i = 0; i < s->iso_urb_count; i++) { 455 xfer = g_new0(USBHostIsoXfer, 1); 456 xfer->ring = ring; 457 xfer->xfer = libusb_alloc_transfer(packets); 458 xfer->xfer->dev_handle = s->dh; 459 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; 460 461 xfer->xfer->endpoint = ring->ep->nr; 462 if (ring->ep->pid == USB_TOKEN_IN) { 463 xfer->xfer->endpoint |= USB_DIR_IN; 464 } 465 xfer->xfer->callback = usb_host_req_complete_iso; 466 xfer->xfer->user_data = xfer; 467 468 xfer->xfer->num_iso_packets = packets; 469 xfer->xfer->length = ring->ep->max_packet_size * packets; 470 xfer->xfer->buffer = g_malloc0(xfer->xfer->length); 471 472 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 473 } 474 475 return ring; 476 } 477 478 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep) 479 { 480 USBHostIsoRing *ring; 481 482 QTAILQ_FOREACH(ring, &s->isorings, next) { 483 if (ring->ep == ep) { 484 return ring; 485 } 486 } 487 return NULL; 488 } 489 490 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer) 491 { 492 libusb_set_iso_packet_lengths(xfer->xfer, 493 xfer->ring->ep->max_packet_size); 494 xfer->packet = 0; 495 xfer->copy_complete = false; 496 } 497 498 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight) 499 { 500 if (inflight) { 501 xfer->xfer->user_data = NULL; 502 } else { 503 g_free(xfer->xfer->buffer); 504 libusb_free_transfer(xfer->xfer); 505 } 506 g_free(xfer); 507 } 508 509 static void usb_host_iso_free(USBHostIsoRing *ring) 510 { 511 USBHostIsoXfer *xfer; 512 513 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) { 514 QTAILQ_REMOVE(&ring->inflight, xfer, next); 515 usb_host_iso_free_xfer(xfer, true); 516 } 517 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 518 QTAILQ_REMOVE(&ring->unused, xfer, next); 519 usb_host_iso_free_xfer(xfer, false); 520 } 521 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) { 522 QTAILQ_REMOVE(&ring->copy, xfer, next); 523 usb_host_iso_free_xfer(xfer, false); 524 } 525 526 QTAILQ_REMOVE(&ring->host->isorings, ring, next); 527 g_free(ring); 528 } 529 530 static void usb_host_iso_free_all(USBHostDevice *s) 531 { 532 USBHostIsoRing *ring; 533 534 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) { 535 usb_host_iso_free(ring); 536 } 537 } 538 539 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p) 540 { 541 unsigned int psize; 542 unsigned char *buf; 543 544 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet); 545 if (p->pid == USB_TOKEN_OUT) { 546 psize = p->iov.size; 547 if (psize > xfer->ring->ep->max_packet_size) { 548 /* should not happen (guest bug) */ 549 psize = xfer->ring->ep->max_packet_size; 550 } 551 xfer->xfer->iso_packet_desc[xfer->packet].length = psize; 552 } else { 553 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length; 554 if (psize > p->iov.size) { 555 /* should not happen (guest bug) */ 556 psize = p->iov.size; 557 } 558 } 559 usb_packet_copy(p, buf, psize); 560 xfer->packet++; 561 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets); 562 return xfer->copy_complete; 563 } 564 565 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p) 566 { 567 USBHostIsoRing *ring; 568 USBHostIsoXfer *xfer; 569 bool disconnect = false; 570 int rc; 571 572 ring = usb_host_iso_find(s, p->ep); 573 if (ring == NULL) { 574 ring = usb_host_iso_alloc(s, p->ep); 575 } 576 577 /* copy data to guest */ 578 xfer = QTAILQ_FIRST(&ring->copy); 579 if (xfer != NULL) { 580 if (usb_host_iso_data_copy(xfer, p)) { 581 QTAILQ_REMOVE(&ring->copy, xfer, next); 582 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 583 } 584 } 585 586 /* submit empty bufs to host */ 587 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 588 QTAILQ_REMOVE(&ring->unused, xfer, next); 589 usb_host_iso_reset_xfer(xfer); 590 rc = libusb_submit_transfer(xfer->xfer); 591 if (rc != 0) { 592 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 593 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 594 if (rc == LIBUSB_ERROR_NO_DEVICE) { 595 disconnect = true; 596 } 597 break; 598 } 599 if (QTAILQ_EMPTY(&ring->inflight)) { 600 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 601 } 602 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 603 } 604 605 if (disconnect) { 606 usb_host_nodev(s); 607 } 608 } 609 610 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p) 611 { 612 USBHostIsoRing *ring; 613 USBHostIsoXfer *xfer; 614 bool disconnect = false; 615 int rc, filled = 0; 616 617 ring = usb_host_iso_find(s, p->ep); 618 if (ring == NULL) { 619 ring = usb_host_iso_alloc(s, p->ep); 620 } 621 622 /* copy data from guest */ 623 xfer = QTAILQ_FIRST(&ring->copy); 624 while (xfer != NULL && xfer->copy_complete) { 625 filled++; 626 xfer = QTAILQ_NEXT(xfer, next); 627 } 628 if (xfer == NULL) { 629 xfer = QTAILQ_FIRST(&ring->unused); 630 if (xfer == NULL) { 631 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr); 632 return; 633 } 634 QTAILQ_REMOVE(&ring->unused, xfer, next); 635 usb_host_iso_reset_xfer(xfer); 636 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next); 637 } 638 usb_host_iso_data_copy(xfer, p); 639 640 if (QTAILQ_EMPTY(&ring->inflight)) { 641 /* wait until half of our buffers are filled 642 before kicking the iso out stream */ 643 if (filled*2 < s->iso_urb_count) { 644 return; 645 } 646 } 647 648 /* submit filled bufs to host */ 649 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL && 650 xfer->copy_complete) { 651 QTAILQ_REMOVE(&ring->copy, xfer, next); 652 rc = libusb_submit_transfer(xfer->xfer); 653 if (rc != 0) { 654 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 655 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 656 if (rc == LIBUSB_ERROR_NO_DEVICE) { 657 disconnect = true; 658 } 659 break; 660 } 661 if (QTAILQ_EMPTY(&ring->inflight)) { 662 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 663 } 664 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 665 } 666 667 if (disconnect) { 668 usb_host_nodev(s); 669 } 670 } 671 672 /* ------------------------------------------------------------------------ */ 673 674 static void usb_host_ep_update(USBHostDevice *s) 675 { 676 static const char *tname[] = { 677 [USB_ENDPOINT_XFER_CONTROL] = "control", 678 [USB_ENDPOINT_XFER_ISOC] = "isoc", 679 [USB_ENDPOINT_XFER_BULK] = "bulk", 680 [USB_ENDPOINT_XFER_INT] = "int", 681 }; 682 USBDevice *udev = USB_DEVICE(s); 683 struct libusb_config_descriptor *conf; 684 const struct libusb_interface_descriptor *intf; 685 const struct libusb_endpoint_descriptor *endp; 686 uint8_t devep, type; 687 int pid, ep; 688 int rc, i, e; 689 690 usb_ep_reset(udev); 691 rc = libusb_get_active_config_descriptor(s->dev, &conf); 692 if (rc != 0) { 693 return; 694 } 695 trace_usb_host_parse_config(s->bus_num, s->addr, 696 conf->bConfigurationValue, true); 697 698 for (i = 0; i < conf->bNumInterfaces; i++) { 699 assert(udev->altsetting[i] < conf->interface[i].num_altsetting); 700 intf = &conf->interface[i].altsetting[udev->altsetting[i]]; 701 trace_usb_host_parse_interface(s->bus_num, s->addr, 702 intf->bInterfaceNumber, 703 intf->bAlternateSetting, true); 704 for (e = 0; e < intf->bNumEndpoints; e++) { 705 endp = &intf->endpoint[e]; 706 707 devep = endp->bEndpointAddress; 708 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 709 ep = devep & 0xf; 710 type = endp->bmAttributes & 0x3; 711 712 if (ep == 0) { 713 trace_usb_host_parse_error(s->bus_num, s->addr, 714 "invalid endpoint address"); 715 return; 716 } 717 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) { 718 trace_usb_host_parse_error(s->bus_num, s->addr, 719 "duplicate endpoint address"); 720 return; 721 } 722 723 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep, 724 (devep & USB_DIR_IN) ? "in" : "out", 725 tname[type], true); 726 usb_ep_set_max_packet_size(udev, pid, ep, 727 endp->wMaxPacketSize); 728 usb_ep_set_type(udev, pid, ep, type); 729 usb_ep_set_ifnum(udev, pid, ep, i); 730 usb_ep_set_halted(udev, pid, ep, 0); 731 } 732 } 733 734 libusb_free_config_descriptor(conf); 735 } 736 737 static int usb_host_open(USBHostDevice *s, libusb_device *dev) 738 { 739 USBDevice *udev = USB_DEVICE(s); 740 int bus_num = libusb_get_bus_number(dev); 741 int addr = libusb_get_device_address(dev); 742 int rc; 743 744 trace_usb_host_open_started(bus_num, addr); 745 746 if (s->dh != NULL) { 747 goto fail; 748 } 749 rc = libusb_open(dev, &s->dh); 750 if (rc != 0) { 751 goto fail; 752 } 753 754 libusb_get_device_descriptor(dev, &s->ddesc); 755 s->dev = dev; 756 s->bus_num = bus_num; 757 s->addr = addr; 758 usb_host_get_port(s->dev, s->port, sizeof(s->port)); 759 760 usb_ep_init(udev); 761 usb_host_ep_update(s); 762 763 udev->speed = speed_map[libusb_get_device_speed(dev)]; 764 udev->speedmask = (1 << udev->speed); 765 #if 0 766 if (udev->speed == USB_SPEED_HIGH && usb_linux_full_speed_compat(dev)) { 767 udev->speedmask |= USB_SPEED_MASK_FULL; 768 } 769 #endif 770 771 if (s->ddesc.iProduct) { 772 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct, 773 (unsigned char *)udev->product_desc, 774 sizeof(udev->product_desc)); 775 } else { 776 snprintf(udev->product_desc, sizeof(udev->product_desc), 777 "host:%d.%d", bus_num, addr); 778 } 779 780 rc = usb_device_attach(udev); 781 if (rc) { 782 goto fail; 783 } 784 785 trace_usb_host_open_success(bus_num, addr); 786 return 0; 787 788 fail: 789 trace_usb_host_open_failure(bus_num, addr); 790 if (s->dh != NULL) { 791 libusb_close(s->dh); 792 s->dh = NULL; 793 s->dev = NULL; 794 } 795 return -1; 796 } 797 798 static void usb_host_abort_xfers(USBHostDevice *s) 799 { 800 USBHostRequest *r, *rtmp; 801 802 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { 803 usb_host_req_abort(r); 804 } 805 } 806 807 static int usb_host_close(USBHostDevice *s) 808 { 809 USBDevice *udev = USB_DEVICE(s); 810 811 if (s->dh == NULL) { 812 return -1; 813 } 814 815 trace_usb_host_close(s->bus_num, s->addr); 816 817 usb_host_abort_xfers(s); 818 usb_host_iso_free_all(s); 819 820 if (udev->attached) { 821 usb_device_detach(udev); 822 } 823 824 usb_host_release_interfaces(s); 825 libusb_reset_device(s->dh); 826 usb_host_attach_kernel(s); 827 libusb_close(s->dh); 828 s->dh = NULL; 829 s->dev = NULL; 830 831 usb_host_auto_check(NULL); 832 return 0; 833 } 834 835 static void usb_host_nodev_bh(void *opaque) 836 { 837 USBHostDevice *s = opaque; 838 usb_host_close(s); 839 } 840 841 static void usb_host_nodev(USBHostDevice *s) 842 { 843 if (!s->bh) { 844 s->bh = qemu_bh_new(usb_host_nodev_bh, s); 845 } 846 qemu_bh_schedule(s->bh); 847 } 848 849 static void usb_host_exit_notifier(struct Notifier *n, void *data) 850 { 851 USBHostDevice *s = container_of(n, USBHostDevice, exit); 852 853 if (s->dh) { 854 usb_host_release_interfaces(s); 855 usb_host_attach_kernel(s); 856 } 857 } 858 859 static int usb_host_initfn(USBDevice *udev) 860 { 861 USBHostDevice *s = USB_HOST_DEVICE(udev); 862 863 loglevel = s->loglevel; 864 udev->auto_attach = 0; 865 QTAILQ_INIT(&s->requests); 866 QTAILQ_INIT(&s->isorings); 867 868 s->exit.notify = usb_host_exit_notifier; 869 qemu_add_exit_notifier(&s->exit); 870 871 QTAILQ_INSERT_TAIL(&hostdevs, s, next); 872 add_boot_device_path(s->bootindex, &udev->qdev, NULL); 873 usb_host_auto_check(NULL); 874 return 0; 875 } 876 877 static void usb_host_handle_destroy(USBDevice *udev) 878 { 879 USBHostDevice *s = USB_HOST_DEVICE(udev); 880 881 qemu_remove_exit_notifier(&s->exit); 882 QTAILQ_REMOVE(&hostdevs, s, next); 883 usb_host_close(s); 884 } 885 886 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p) 887 { 888 USBHostDevice *s = USB_HOST_DEVICE(udev); 889 USBHostRequest *r; 890 891 if (p->combined) { 892 usb_combined_packet_cancel(udev, p); 893 return; 894 } 895 896 trace_usb_host_req_canceled(s->bus_num, s->addr, p); 897 898 r = usb_host_req_find(s, p); 899 if (r && r->p) { 900 r->p = NULL; /* mark as dead */ 901 libusb_cancel_transfer(r->xfer); 902 } 903 } 904 905 static void usb_host_detach_kernel(USBHostDevice *s) 906 { 907 struct libusb_config_descriptor *conf; 908 int rc, i; 909 910 rc = libusb_get_active_config_descriptor(s->dev, &conf); 911 if (rc != 0) { 912 return; 913 } 914 for (i = 0; i < conf->bNumInterfaces; i++) { 915 rc = libusb_kernel_driver_active(s->dh, i); 916 usb_host_libusb_error("libusb_kernel_driver_active", rc); 917 if (rc != 1) { 918 continue; 919 } 920 trace_usb_host_detach_kernel(s->bus_num, s->addr, i); 921 rc = libusb_detach_kernel_driver(s->dh, i); 922 usb_host_libusb_error("libusb_detach_kernel_driver", rc); 923 s->ifs[i].detached = true; 924 } 925 libusb_free_config_descriptor(conf); 926 } 927 928 static void usb_host_attach_kernel(USBHostDevice *s) 929 { 930 struct libusb_config_descriptor *conf; 931 int rc, i; 932 933 rc = libusb_get_active_config_descriptor(s->dev, &conf); 934 if (rc != 0) { 935 return; 936 } 937 for (i = 0; i < conf->bNumInterfaces; i++) { 938 if (!s->ifs[i].detached) { 939 continue; 940 } 941 trace_usb_host_attach_kernel(s->bus_num, s->addr, i); 942 libusb_attach_kernel_driver(s->dh, i); 943 s->ifs[i].detached = false; 944 } 945 libusb_free_config_descriptor(conf); 946 } 947 948 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration) 949 { 950 USBDevice *udev = USB_DEVICE(s); 951 struct libusb_config_descriptor *conf; 952 int rc, i; 953 954 for (i = 0; i < USB_MAX_INTERFACES; i++) { 955 udev->altsetting[i] = 0; 956 } 957 udev->ninterfaces = 0; 958 udev->configuration = 0; 959 960 if (configuration == 0) { 961 /* address state - ignore */ 962 return USB_RET_SUCCESS; 963 } 964 965 usb_host_detach_kernel(s); 966 967 rc = libusb_get_active_config_descriptor(s->dev, &conf); 968 if (rc != 0) { 969 return USB_RET_STALL; 970 } 971 972 for (i = 0; i < conf->bNumInterfaces; i++) { 973 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); 974 rc = libusb_claim_interface(s->dh, i); 975 usb_host_libusb_error("libusb_claim_interface", rc); 976 if (rc != 0) { 977 return USB_RET_STALL; 978 } 979 s->ifs[i].claimed = true; 980 } 981 982 udev->ninterfaces = conf->bNumInterfaces; 983 udev->configuration = configuration; 984 985 libusb_free_config_descriptor(conf); 986 return USB_RET_SUCCESS; 987 } 988 989 static void usb_host_release_interfaces(USBHostDevice *s) 990 { 991 USBDevice *udev = USB_DEVICE(s); 992 int i, rc; 993 994 for (i = 0; i < udev->ninterfaces; i++) { 995 if (!s->ifs[i].claimed) { 996 continue; 997 } 998 trace_usb_host_release_interface(s->bus_num, s->addr, i); 999 rc = libusb_release_interface(s->dh, i); 1000 usb_host_libusb_error("libusb_release_interface", rc); 1001 s->ifs[i].claimed = false; 1002 } 1003 } 1004 1005 static void usb_host_set_address(USBHostDevice *s, int addr) 1006 { 1007 USBDevice *udev = USB_DEVICE(s); 1008 1009 trace_usb_host_set_address(s->bus_num, s->addr, addr); 1010 udev->addr = addr; 1011 } 1012 1013 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p) 1014 { 1015 int rc; 1016 1017 trace_usb_host_set_config(s->bus_num, s->addr, config); 1018 1019 usb_host_release_interfaces(s); 1020 usb_host_detach_kernel(s); 1021 rc = libusb_set_configuration(s->dh, config); 1022 if (rc != 0) { 1023 usb_host_libusb_error("libusb_set_configuration", rc); 1024 p->status = USB_RET_STALL; 1025 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1026 usb_host_nodev(s); 1027 } 1028 return; 1029 } 1030 p->status = usb_host_claim_interfaces(s, config); 1031 if (p->status != USB_RET_SUCCESS) { 1032 return; 1033 } 1034 usb_host_ep_update(s); 1035 } 1036 1037 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt, 1038 USBPacket *p) 1039 { 1040 USBDevice *udev = USB_DEVICE(s); 1041 int rc; 1042 1043 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); 1044 1045 usb_host_iso_free_all(s); 1046 1047 if (iface >= USB_MAX_INTERFACES) { 1048 p->status = USB_RET_STALL; 1049 return; 1050 } 1051 1052 rc = libusb_set_interface_alt_setting(s->dh, iface, alt); 1053 if (rc != 0) { 1054 usb_host_libusb_error("libusb_set_interface_alt_setting", rc); 1055 p->status = USB_RET_STALL; 1056 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1057 usb_host_nodev(s); 1058 } 1059 return; 1060 } 1061 1062 udev->altsetting[iface] = alt; 1063 usb_host_ep_update(s); 1064 } 1065 1066 static void usb_host_handle_control(USBDevice *udev, USBPacket *p, 1067 int request, int value, int index, 1068 int length, uint8_t *data) 1069 { 1070 USBHostDevice *s = USB_HOST_DEVICE(udev); 1071 USBHostRequest *r; 1072 int rc; 1073 1074 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index); 1075 1076 if (s->dh == NULL) { 1077 p->status = USB_RET_NODEV; 1078 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1079 return; 1080 } 1081 1082 switch (request) { 1083 case DeviceOutRequest | USB_REQ_SET_ADDRESS: 1084 usb_host_set_address(s, value); 1085 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1086 return; 1087 1088 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: 1089 usb_host_set_config(s, value & 0xff, p); 1090 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1091 return; 1092 1093 case InterfaceOutRequest | USB_REQ_SET_INTERFACE: 1094 usb_host_set_interface(s, index, value, p); 1095 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1096 return; 1097 1098 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 1099 if (value == 0) { /* clear halt */ 1100 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 1101 libusb_clear_halt(s->dh, index); 1102 usb_ep_set_halted(udev, pid, index & 0x0f, 0); 1103 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1104 return; 1105 } 1106 } 1107 1108 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8); 1109 r->cbuf = data; 1110 r->clen = length; 1111 memcpy(r->buffer, udev->setup_buf, 8); 1112 if (!r->in) { 1113 memcpy(r->buffer + 8, r->cbuf, r->clen); 1114 } 1115 1116 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer, 1117 usb_host_req_complete_ctrl, r, 1118 CONTROL_TIMEOUT); 1119 rc = libusb_submit_transfer(r->xfer); 1120 if (rc != 0) { 1121 p->status = USB_RET_NODEV; 1122 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1123 p->status, p->actual_length); 1124 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1125 usb_host_nodev(s); 1126 } 1127 return; 1128 } 1129 1130 p->status = USB_RET_ASYNC; 1131 } 1132 1133 static void usb_host_handle_data(USBDevice *udev, USBPacket *p) 1134 { 1135 USBHostDevice *s = USB_HOST_DEVICE(udev); 1136 USBHostRequest *r; 1137 size_t size; 1138 int ep, rc; 1139 1140 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) { 1141 p->status = USB_RET_ADD_TO_QUEUE; 1142 return; 1143 } 1144 1145 trace_usb_host_req_data(s->bus_num, s->addr, p, 1146 p->pid == USB_TOKEN_IN, 1147 p->ep->nr, p->iov.size); 1148 1149 if (s->dh == NULL) { 1150 p->status = USB_RET_NODEV; 1151 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1152 return; 1153 } 1154 if (p->ep->halted) { 1155 p->status = USB_RET_STALL; 1156 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1157 return; 1158 } 1159 1160 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) { 1161 case USB_ENDPOINT_XFER_BULK: 1162 size = usb_packet_size(p); 1163 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size); 1164 if (!r->in) { 1165 usb_packet_copy(p, r->buffer, size); 1166 } 1167 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1168 libusb_fill_bulk_transfer(r->xfer, s->dh, ep, 1169 r->buffer, size, 1170 usb_host_req_complete_data, r, 1171 BULK_TIMEOUT); 1172 break; 1173 case USB_ENDPOINT_XFER_INT: 1174 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size); 1175 if (!r->in) { 1176 usb_packet_copy(p, r->buffer, p->iov.size); 1177 } 1178 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1179 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep, 1180 r->buffer, p->iov.size, 1181 usb_host_req_complete_data, r, 1182 INTR_TIMEOUT); 1183 break; 1184 case USB_ENDPOINT_XFER_ISOC: 1185 if (p->pid == USB_TOKEN_IN) { 1186 usb_host_iso_data_in(s, p); 1187 } else { 1188 usb_host_iso_data_out(s, p); 1189 } 1190 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1191 p->status, p->actual_length); 1192 return; 1193 default: 1194 p->status = USB_RET_STALL; 1195 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1196 p->status, p->actual_length); 1197 return; 1198 } 1199 1200 rc = libusb_submit_transfer(r->xfer); 1201 if (rc != 0) { 1202 p->status = USB_RET_NODEV; 1203 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1204 p->status, p->actual_length); 1205 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1206 usb_host_nodev(s); 1207 } 1208 return; 1209 } 1210 1211 p->status = USB_RET_ASYNC; 1212 } 1213 1214 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) 1215 { 1216 if (usb_host_use_combining(ep)) { 1217 usb_ep_combine_input_packets(ep); 1218 } 1219 } 1220 1221 static void usb_host_handle_reset(USBDevice *udev) 1222 { 1223 USBHostDevice *s = USB_HOST_DEVICE(udev); 1224 1225 trace_usb_host_reset(s->bus_num, s->addr); 1226 1227 if (udev->configuration == 0) { 1228 return; 1229 } 1230 usb_host_release_interfaces(s); 1231 libusb_reset_device(s->dh); 1232 usb_host_claim_interfaces(s, 0); 1233 usb_host_ep_update(s); 1234 } 1235 1236 static const VMStateDescription vmstate_usb_host = { 1237 .name = "usb-host", 1238 .unmigratable = 1, 1239 .fields = (VMStateField[]) { 1240 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice), 1241 VMSTATE_END_OF_LIST() 1242 } 1243 }; 1244 1245 static Property usb_host_dev_properties[] = { 1246 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), 1247 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), 1248 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port), 1249 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), 1250 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), 1251 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), 1252 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32), 1253 DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1), 1254 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel, 1255 LIBUSB_LOG_LEVEL_WARNING), 1256 DEFINE_PROP_BIT("pipeline", USBHostDevice, options, 1257 USB_HOST_OPT_PIPELINE, true), 1258 DEFINE_PROP_END_OF_LIST(), 1259 }; 1260 1261 static void usb_host_class_initfn(ObjectClass *klass, void *data) 1262 { 1263 DeviceClass *dc = DEVICE_CLASS(klass); 1264 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1265 1266 uc->init = usb_host_initfn; 1267 uc->product_desc = "USB Host Device"; 1268 uc->cancel_packet = usb_host_cancel_packet; 1269 uc->handle_data = usb_host_handle_data; 1270 uc->handle_control = usb_host_handle_control; 1271 uc->handle_reset = usb_host_handle_reset; 1272 uc->handle_destroy = usb_host_handle_destroy; 1273 uc->flush_ep_queue = usb_host_flush_ep_queue; 1274 dc->vmsd = &vmstate_usb_host; 1275 dc->props = usb_host_dev_properties; 1276 } 1277 1278 static TypeInfo usb_host_dev_info = { 1279 .name = TYPE_USB_HOST_DEVICE, 1280 .parent = TYPE_USB_DEVICE, 1281 .instance_size = sizeof(USBHostDevice), 1282 .class_init = usb_host_class_initfn, 1283 }; 1284 1285 static void usb_host_register_types(void) 1286 { 1287 type_register_static(&usb_host_dev_info); 1288 } 1289 1290 type_init(usb_host_register_types) 1291 1292 /* ------------------------------------------------------------------------ */ 1293 1294 static QEMUTimer *usb_auto_timer; 1295 static VMChangeStateEntry *usb_vmstate; 1296 1297 static void usb_host_vm_state(void *unused, int running, RunState state) 1298 { 1299 if (running) { 1300 usb_host_auto_check(unused); 1301 } 1302 } 1303 1304 static void usb_host_auto_check(void *unused) 1305 { 1306 struct USBHostDevice *s; 1307 struct USBAutoFilter *f; 1308 libusb_device **devs; 1309 struct libusb_device_descriptor ddesc; 1310 int unconnected = 0; 1311 int i, n; 1312 1313 if (usb_host_init() != 0) { 1314 return; 1315 } 1316 1317 if (runstate_is_running()) { 1318 n = libusb_get_device_list(ctx, &devs); 1319 for (i = 0; i < n; i++) { 1320 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1321 continue; 1322 } 1323 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1324 continue; 1325 } 1326 QTAILQ_FOREACH(s, &hostdevs, next) { 1327 f = &s->match; 1328 if (f->bus_num > 0 && 1329 f->bus_num != libusb_get_bus_number(devs[i])) { 1330 continue; 1331 } 1332 if (f->addr > 0 && 1333 f->addr != libusb_get_device_address(devs[i])) { 1334 continue; 1335 } 1336 if (f->port != NULL) { 1337 char port[16] = "-"; 1338 usb_host_get_port(devs[i], port, sizeof(port)); 1339 if (strcmp(f->port, port) != 0) { 1340 continue; 1341 } 1342 } 1343 if (f->vendor_id > 0 && 1344 f->vendor_id != ddesc.idVendor) { 1345 continue; 1346 } 1347 if (f->product_id > 0 && 1348 f->product_id != ddesc.idProduct) { 1349 continue; 1350 } 1351 1352 /* We got a match */ 1353 s->seen++; 1354 if (s->errcount >= 3) { 1355 continue; 1356 } 1357 if (s->dh != NULL) { 1358 continue; 1359 } 1360 if (usb_host_open(s, devs[i]) < 0) { 1361 s->errcount++; 1362 continue; 1363 } 1364 break; 1365 } 1366 } 1367 libusb_free_device_list(devs, 1); 1368 1369 QTAILQ_FOREACH(s, &hostdevs, next) { 1370 if (s->dh == NULL) { 1371 unconnected++; 1372 } 1373 if (s->seen == 0) { 1374 if (s->dh) { 1375 usb_host_close(s); 1376 } 1377 s->errcount = 0; 1378 } 1379 s->seen = 0; 1380 } 1381 1382 #if 0 1383 if (unconnected == 0) { 1384 /* nothing to watch */ 1385 if (usb_auto_timer) { 1386 qemu_del_timer(usb_auto_timer); 1387 trace_usb_host_auto_scan_disabled(); 1388 } 1389 return; 1390 } 1391 #endif 1392 } 1393 1394 if (!usb_vmstate) { 1395 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL); 1396 } 1397 if (!usb_auto_timer) { 1398 usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL); 1399 if (!usb_auto_timer) { 1400 return; 1401 } 1402 trace_usb_host_auto_scan_enabled(); 1403 } 1404 qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000); 1405 } 1406 1407 void usb_host_info(Monitor *mon, const QDict *qdict) 1408 { 1409 libusb_device **devs; 1410 struct libusb_device_descriptor ddesc; 1411 char port[16]; 1412 int i, n; 1413 1414 if (usb_host_init() != 0) { 1415 return; 1416 } 1417 1418 n = libusb_get_device_list(ctx, &devs); 1419 for (i = 0; i < n; i++) { 1420 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1421 continue; 1422 } 1423 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1424 continue; 1425 } 1426 usb_host_get_port(devs[i], port, sizeof(port)); 1427 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n", 1428 libusb_get_bus_number(devs[i]), 1429 libusb_get_device_address(devs[i]), 1430 port, 1431 speed_name[libusb_get_device_speed(devs[i])]); 1432 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass); 1433 monitor_printf(mon, " USB device %04x:%04x", 1434 ddesc.idVendor, ddesc.idProduct); 1435 if (ddesc.iProduct) { 1436 libusb_device_handle *handle; 1437 if (libusb_open(devs[i], &handle) == 0) { 1438 unsigned char name[64] = ""; 1439 libusb_get_string_descriptor_ascii(handle, 1440 ddesc.iProduct, 1441 name, sizeof(name)); 1442 libusb_close(handle); 1443 monitor_printf(mon, ", %s", name); 1444 } 1445 } 1446 monitor_printf(mon, "\n"); 1447 } 1448 libusb_free_device_list(devs, 1); 1449 } 1450