1 /* 2 * Linux host USB redirector 3 * 4 * Copyright (c) 2005 Fabrice Bellard 5 * 6 * Copyright (c) 2008 Max Krasnyansky 7 * Support for host device auto connect & disconnect 8 * Major rewrite to support fully async operation 9 * 10 * Copyright 2008 TJ <linux@tjworld.net> 11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition 12 * to the legacy /proc/bus/usb USB device discovery and handling 13 * 14 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com> 15 * Completely rewritten to use libusb instead of usbfs ioctls. 16 * 17 * Permission is hereby granted, free of charge, to any person obtaining a copy 18 * of this software and associated documentation files (the "Software"), to deal 19 * in the Software without restriction, including without limitation the rights 20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 21 * copies of the Software, and to permit persons to whom the Software is 22 * furnished to do so, subject to the following conditions: 23 * 24 * The above copyright notice and this permission notice shall be included in 25 * all copies or substantial portions of the Software. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 33 * THE SOFTWARE. 34 */ 35 36 #include <poll.h> 37 #include <libusb.h> 38 39 #include "qemu-common.h" 40 #include "monitor/monitor.h" 41 #include "sysemu/sysemu.h" 42 #include "trace.h" 43 44 #include "hw/usb.h" 45 46 /* ------------------------------------------------------------------------ */ 47 48 #define TYPE_USB_HOST_DEVICE "usb-host" 49 #define USB_HOST_DEVICE(obj) \ 50 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE) 51 52 typedef struct USBHostDevice USBHostDevice; 53 typedef struct USBHostRequest USBHostRequest; 54 typedef struct USBHostIsoXfer USBHostIsoXfer; 55 typedef struct USBHostIsoRing USBHostIsoRing; 56 57 struct USBAutoFilter { 58 uint32_t bus_num; 59 uint32_t addr; 60 char *port; 61 uint32_t vendor_id; 62 uint32_t product_id; 63 }; 64 65 enum USBHostDeviceOptions { 66 USB_HOST_OPT_PIPELINE, 67 }; 68 69 struct USBHostDevice { 70 USBDevice parent_obj; 71 72 /* properties */ 73 struct USBAutoFilter match; 74 int32_t bootindex; 75 uint32_t iso_urb_count; 76 uint32_t iso_urb_frames; 77 uint32_t options; 78 uint32_t loglevel; 79 80 /* state */ 81 QTAILQ_ENTRY(USBHostDevice) next; 82 int seen, errcount; 83 int bus_num; 84 int addr; 85 char port[16]; 86 87 libusb_device *dev; 88 libusb_device_handle *dh; 89 struct libusb_device_descriptor ddesc; 90 91 struct { 92 bool detached; 93 bool claimed; 94 } ifs[USB_MAX_INTERFACES]; 95 96 /* callbacks & friends */ 97 QEMUBH *bh_nodev; 98 QEMUBH *bh_postld; 99 Notifier exit; 100 101 /* request queues */ 102 QTAILQ_HEAD(, USBHostRequest) requests; 103 QTAILQ_HEAD(, USBHostIsoRing) isorings; 104 }; 105 106 struct USBHostRequest { 107 USBHostDevice *host; 108 USBPacket *p; 109 bool in; 110 struct libusb_transfer *xfer; 111 unsigned char *buffer; 112 unsigned char *cbuf; 113 unsigned int clen; 114 QTAILQ_ENTRY(USBHostRequest) next; 115 }; 116 117 struct USBHostIsoXfer { 118 USBHostIsoRing *ring; 119 struct libusb_transfer *xfer; 120 bool copy_complete; 121 unsigned int packet; 122 QTAILQ_ENTRY(USBHostIsoXfer) next; 123 }; 124 125 struct USBHostIsoRing { 126 USBHostDevice *host; 127 USBEndpoint *ep; 128 QTAILQ_HEAD(, USBHostIsoXfer) unused; 129 QTAILQ_HEAD(, USBHostIsoXfer) inflight; 130 QTAILQ_HEAD(, USBHostIsoXfer) copy; 131 QTAILQ_ENTRY(USBHostIsoRing) next; 132 }; 133 134 static QTAILQ_HEAD(, USBHostDevice) hostdevs = 135 QTAILQ_HEAD_INITIALIZER(hostdevs); 136 137 static void usb_host_auto_check(void *unused); 138 static void usb_host_release_interfaces(USBHostDevice *s); 139 static void usb_host_nodev(USBHostDevice *s); 140 static void usb_host_attach_kernel(USBHostDevice *s); 141 142 /* ------------------------------------------------------------------------ */ 143 144 #define CONTROL_TIMEOUT 10000 /* 10 sec */ 145 #define BULK_TIMEOUT 0 /* unlimited */ 146 #define INTR_TIMEOUT 0 /* unlimited */ 147 148 static const char *speed_name[] = { 149 [LIBUSB_SPEED_UNKNOWN] = "?", 150 [LIBUSB_SPEED_LOW] = "1.5", 151 [LIBUSB_SPEED_FULL] = "12", 152 [LIBUSB_SPEED_HIGH] = "480", 153 [LIBUSB_SPEED_SUPER] = "5000", 154 }; 155 156 static const unsigned int speed_map[] = { 157 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW, 158 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL, 159 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH, 160 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER, 161 }; 162 163 static const unsigned int status_map[] = { 164 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS, 165 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR, 166 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR, 167 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR, 168 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL, 169 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV, 170 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE, 171 }; 172 173 static const char *err_names[] = { 174 [-LIBUSB_ERROR_IO] = "IO", 175 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM", 176 [-LIBUSB_ERROR_ACCESS] = "ACCESS", 177 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE", 178 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND", 179 [-LIBUSB_ERROR_BUSY] = "BUSY", 180 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT", 181 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW", 182 [-LIBUSB_ERROR_PIPE] = "PIPE", 183 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED", 184 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM", 185 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED", 186 [-LIBUSB_ERROR_OTHER] = "OTHER", 187 }; 188 189 static libusb_context *ctx; 190 static uint32_t loglevel; 191 192 static void usb_host_handle_fd(void *opaque) 193 { 194 struct timeval tv = { 0, 0 }; 195 libusb_handle_events_timeout(ctx, &tv); 196 } 197 198 static void usb_host_add_fd(int fd, short events, void *user_data) 199 { 200 qemu_set_fd_handler(fd, 201 (events & POLLIN) ? usb_host_handle_fd : NULL, 202 (events & POLLOUT) ? usb_host_handle_fd : NULL, 203 ctx); 204 } 205 206 static void usb_host_del_fd(int fd, void *user_data) 207 { 208 qemu_set_fd_handler(fd, NULL, NULL, NULL); 209 } 210 211 static int usb_host_init(void) 212 { 213 const struct libusb_pollfd **poll; 214 int i, rc; 215 216 if (ctx) { 217 return 0; 218 } 219 rc = libusb_init(&ctx); 220 if (rc != 0) { 221 return -1; 222 } 223 libusb_set_debug(ctx, loglevel); 224 225 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd, 226 usb_host_del_fd, 227 ctx); 228 poll = libusb_get_pollfds(ctx); 229 if (poll) { 230 for (i = 0; poll[i] != NULL; i++) { 231 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx); 232 } 233 } 234 free(poll); 235 return 0; 236 } 237 238 static int usb_host_get_port(libusb_device *dev, char *port, size_t len) 239 { 240 uint8_t path[7]; 241 size_t off; 242 int rc, i; 243 244 #if LIBUSBX_API_VERSION >= 0x01000102 245 rc = libusb_get_port_numbers(dev, path, 7); 246 #else 247 rc = libusb_get_port_path(ctx, dev, path, 7); 248 #endif 249 if (rc < 0) { 250 return 0; 251 } 252 off = snprintf(port, len, "%d", path[0]); 253 for (i = 1; i < rc; i++) { 254 off += snprintf(port+off, len-off, ".%d", path[i]); 255 } 256 return off; 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_PACKET_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 bool usb_host_full_speed_compat(USBHostDevice *s) 675 { 676 struct libusb_config_descriptor *conf; 677 const struct libusb_interface_descriptor *intf; 678 const struct libusb_endpoint_descriptor *endp; 679 uint8_t type; 680 int rc, c, i, a, e; 681 682 for (c = 0;; c++) { 683 rc = libusb_get_config_descriptor(s->dev, c, &conf); 684 if (rc != 0) { 685 break; 686 } 687 for (i = 0; i < conf->bNumInterfaces; i++) { 688 for (a = 0; a < conf->interface[i].num_altsetting; a++) { 689 intf = &conf->interface[i].altsetting[a]; 690 for (e = 0; e < intf->bNumEndpoints; e++) { 691 endp = &intf->endpoint[e]; 692 type = endp->bmAttributes & 0x3; 693 switch (type) { 694 case 0x01: /* ISO */ 695 return false; 696 case 0x03: /* INTERRUPT */ 697 if (endp->wMaxPacketSize > 64) { 698 return false; 699 } 700 break; 701 } 702 } 703 } 704 } 705 libusb_free_config_descriptor(conf); 706 } 707 return true; 708 } 709 710 static void usb_host_ep_update(USBHostDevice *s) 711 { 712 static const char *tname[] = { 713 [USB_ENDPOINT_XFER_CONTROL] = "control", 714 [USB_ENDPOINT_XFER_ISOC] = "isoc", 715 [USB_ENDPOINT_XFER_BULK] = "bulk", 716 [USB_ENDPOINT_XFER_INT] = "int", 717 }; 718 USBDevice *udev = USB_DEVICE(s); 719 struct libusb_config_descriptor *conf; 720 const struct libusb_interface_descriptor *intf; 721 const struct libusb_endpoint_descriptor *endp; 722 uint8_t devep, type; 723 int pid, ep; 724 int rc, i, e; 725 726 usb_ep_reset(udev); 727 rc = libusb_get_active_config_descriptor(s->dev, &conf); 728 if (rc != 0) { 729 return; 730 } 731 trace_usb_host_parse_config(s->bus_num, s->addr, 732 conf->bConfigurationValue, true); 733 734 for (i = 0; i < conf->bNumInterfaces; i++) { 735 assert(udev->altsetting[i] < conf->interface[i].num_altsetting); 736 intf = &conf->interface[i].altsetting[udev->altsetting[i]]; 737 trace_usb_host_parse_interface(s->bus_num, s->addr, 738 intf->bInterfaceNumber, 739 intf->bAlternateSetting, true); 740 for (e = 0; e < intf->bNumEndpoints; e++) { 741 endp = &intf->endpoint[e]; 742 743 devep = endp->bEndpointAddress; 744 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 745 ep = devep & 0xf; 746 type = endp->bmAttributes & 0x3; 747 748 if (ep == 0) { 749 trace_usb_host_parse_error(s->bus_num, s->addr, 750 "invalid endpoint address"); 751 return; 752 } 753 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) { 754 trace_usb_host_parse_error(s->bus_num, s->addr, 755 "duplicate endpoint address"); 756 return; 757 } 758 759 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep, 760 (devep & USB_DIR_IN) ? "in" : "out", 761 tname[type], true); 762 usb_ep_set_max_packet_size(udev, pid, ep, 763 endp->wMaxPacketSize); 764 usb_ep_set_type(udev, pid, ep, type); 765 usb_ep_set_ifnum(udev, pid, ep, i); 766 usb_ep_set_halted(udev, pid, ep, 0); 767 } 768 } 769 770 libusb_free_config_descriptor(conf); 771 } 772 773 static int usb_host_open(USBHostDevice *s, libusb_device *dev) 774 { 775 USBDevice *udev = USB_DEVICE(s); 776 int bus_num = libusb_get_bus_number(dev); 777 int addr = libusb_get_device_address(dev); 778 int rc; 779 780 trace_usb_host_open_started(bus_num, addr); 781 782 if (s->dh != NULL) { 783 goto fail; 784 } 785 rc = libusb_open(dev, &s->dh); 786 if (rc != 0) { 787 goto fail; 788 } 789 790 libusb_get_device_descriptor(dev, &s->ddesc); 791 s->dev = dev; 792 s->bus_num = bus_num; 793 s->addr = addr; 794 usb_host_get_port(s->dev, s->port, sizeof(s->port)); 795 796 usb_ep_init(udev); 797 usb_host_ep_update(s); 798 799 udev->speed = speed_map[libusb_get_device_speed(dev)]; 800 udev->speedmask = (1 << udev->speed); 801 if (udev->speed == USB_SPEED_HIGH && usb_host_full_speed_compat(s)) { 802 udev->speedmask |= USB_SPEED_MASK_FULL; 803 } 804 805 if (s->ddesc.iProduct) { 806 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct, 807 (unsigned char *)udev->product_desc, 808 sizeof(udev->product_desc)); 809 } else { 810 snprintf(udev->product_desc, sizeof(udev->product_desc), 811 "host:%d.%d", bus_num, addr); 812 } 813 814 rc = usb_device_attach(udev); 815 if (rc) { 816 goto fail; 817 } 818 819 trace_usb_host_open_success(bus_num, addr); 820 return 0; 821 822 fail: 823 trace_usb_host_open_failure(bus_num, addr); 824 if (s->dh != NULL) { 825 libusb_close(s->dh); 826 s->dh = NULL; 827 s->dev = NULL; 828 } 829 return -1; 830 } 831 832 static void usb_host_abort_xfers(USBHostDevice *s) 833 { 834 USBHostRequest *r, *rtmp; 835 836 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { 837 usb_host_req_abort(r); 838 } 839 } 840 841 static int usb_host_close(USBHostDevice *s) 842 { 843 USBDevice *udev = USB_DEVICE(s); 844 845 if (s->dh == NULL) { 846 return -1; 847 } 848 849 trace_usb_host_close(s->bus_num, s->addr); 850 851 usb_host_abort_xfers(s); 852 usb_host_iso_free_all(s); 853 854 if (udev->attached) { 855 usb_device_detach(udev); 856 } 857 858 usb_host_release_interfaces(s); 859 libusb_reset_device(s->dh); 860 usb_host_attach_kernel(s); 861 libusb_close(s->dh); 862 s->dh = NULL; 863 s->dev = NULL; 864 865 usb_host_auto_check(NULL); 866 return 0; 867 } 868 869 static void usb_host_nodev_bh(void *opaque) 870 { 871 USBHostDevice *s = opaque; 872 usb_host_close(s); 873 } 874 875 static void usb_host_nodev(USBHostDevice *s) 876 { 877 if (!s->bh_nodev) { 878 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s); 879 } 880 qemu_bh_schedule(s->bh_nodev); 881 } 882 883 static void usb_host_exit_notifier(struct Notifier *n, void *data) 884 { 885 USBHostDevice *s = container_of(n, USBHostDevice, exit); 886 887 if (s->dh) { 888 usb_host_release_interfaces(s); 889 usb_host_attach_kernel(s); 890 } 891 } 892 893 static int usb_host_initfn(USBDevice *udev) 894 { 895 USBHostDevice *s = USB_HOST_DEVICE(udev); 896 897 loglevel = s->loglevel; 898 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST); 899 udev->auto_attach = 0; 900 QTAILQ_INIT(&s->requests); 901 QTAILQ_INIT(&s->isorings); 902 903 s->exit.notify = usb_host_exit_notifier; 904 qemu_add_exit_notifier(&s->exit); 905 906 QTAILQ_INSERT_TAIL(&hostdevs, s, next); 907 add_boot_device_path(s->bootindex, &udev->qdev, NULL); 908 usb_host_auto_check(NULL); 909 return 0; 910 } 911 912 static void usb_host_handle_destroy(USBDevice *udev) 913 { 914 USBHostDevice *s = USB_HOST_DEVICE(udev); 915 916 qemu_remove_exit_notifier(&s->exit); 917 QTAILQ_REMOVE(&hostdevs, s, next); 918 usb_host_close(s); 919 } 920 921 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p) 922 { 923 USBHostDevice *s = USB_HOST_DEVICE(udev); 924 USBHostRequest *r; 925 926 if (p->combined) { 927 usb_combined_packet_cancel(udev, p); 928 return; 929 } 930 931 trace_usb_host_req_canceled(s->bus_num, s->addr, p); 932 933 r = usb_host_req_find(s, p); 934 if (r && r->p) { 935 r->p = NULL; /* mark as dead */ 936 libusb_cancel_transfer(r->xfer); 937 } 938 } 939 940 static void usb_host_detach_kernel(USBHostDevice *s) 941 { 942 struct libusb_config_descriptor *conf; 943 int rc, i; 944 945 rc = libusb_get_active_config_descriptor(s->dev, &conf); 946 if (rc != 0) { 947 return; 948 } 949 for (i = 0; i < conf->bNumInterfaces; i++) { 950 rc = libusb_kernel_driver_active(s->dh, i); 951 usb_host_libusb_error("libusb_kernel_driver_active", rc); 952 if (rc != 1) { 953 continue; 954 } 955 trace_usb_host_detach_kernel(s->bus_num, s->addr, i); 956 rc = libusb_detach_kernel_driver(s->dh, i); 957 usb_host_libusb_error("libusb_detach_kernel_driver", rc); 958 s->ifs[i].detached = true; 959 } 960 libusb_free_config_descriptor(conf); 961 } 962 963 static void usb_host_attach_kernel(USBHostDevice *s) 964 { 965 struct libusb_config_descriptor *conf; 966 int rc, i; 967 968 rc = libusb_get_active_config_descriptor(s->dev, &conf); 969 if (rc != 0) { 970 return; 971 } 972 for (i = 0; i < conf->bNumInterfaces; i++) { 973 if (!s->ifs[i].detached) { 974 continue; 975 } 976 trace_usb_host_attach_kernel(s->bus_num, s->addr, i); 977 libusb_attach_kernel_driver(s->dh, i); 978 s->ifs[i].detached = false; 979 } 980 libusb_free_config_descriptor(conf); 981 } 982 983 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration) 984 { 985 USBDevice *udev = USB_DEVICE(s); 986 struct libusb_config_descriptor *conf; 987 int rc, i; 988 989 for (i = 0; i < USB_MAX_INTERFACES; i++) { 990 udev->altsetting[i] = 0; 991 } 992 udev->ninterfaces = 0; 993 udev->configuration = 0; 994 995 if (configuration == 0) { 996 /* address state - ignore */ 997 return USB_RET_SUCCESS; 998 } 999 1000 usb_host_detach_kernel(s); 1001 1002 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1003 if (rc != 0) { 1004 return USB_RET_STALL; 1005 } 1006 1007 for (i = 0; i < conf->bNumInterfaces; i++) { 1008 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); 1009 rc = libusb_claim_interface(s->dh, i); 1010 usb_host_libusb_error("libusb_claim_interface", rc); 1011 if (rc != 0) { 1012 return USB_RET_STALL; 1013 } 1014 s->ifs[i].claimed = true; 1015 } 1016 1017 udev->ninterfaces = conf->bNumInterfaces; 1018 udev->configuration = configuration; 1019 1020 libusb_free_config_descriptor(conf); 1021 return USB_RET_SUCCESS; 1022 } 1023 1024 static void usb_host_release_interfaces(USBHostDevice *s) 1025 { 1026 USBDevice *udev = USB_DEVICE(s); 1027 int i, rc; 1028 1029 for (i = 0; i < udev->ninterfaces; i++) { 1030 if (!s->ifs[i].claimed) { 1031 continue; 1032 } 1033 trace_usb_host_release_interface(s->bus_num, s->addr, i); 1034 rc = libusb_release_interface(s->dh, i); 1035 usb_host_libusb_error("libusb_release_interface", rc); 1036 s->ifs[i].claimed = false; 1037 } 1038 } 1039 1040 static void usb_host_set_address(USBHostDevice *s, int addr) 1041 { 1042 USBDevice *udev = USB_DEVICE(s); 1043 1044 trace_usb_host_set_address(s->bus_num, s->addr, addr); 1045 udev->addr = addr; 1046 } 1047 1048 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p) 1049 { 1050 int rc; 1051 1052 trace_usb_host_set_config(s->bus_num, s->addr, config); 1053 1054 usb_host_release_interfaces(s); 1055 usb_host_detach_kernel(s); 1056 rc = libusb_set_configuration(s->dh, config); 1057 if (rc != 0) { 1058 usb_host_libusb_error("libusb_set_configuration", rc); 1059 p->status = USB_RET_STALL; 1060 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1061 usb_host_nodev(s); 1062 } 1063 return; 1064 } 1065 p->status = usb_host_claim_interfaces(s, config); 1066 if (p->status != USB_RET_SUCCESS) { 1067 return; 1068 } 1069 usb_host_ep_update(s); 1070 } 1071 1072 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt, 1073 USBPacket *p) 1074 { 1075 USBDevice *udev = USB_DEVICE(s); 1076 int rc; 1077 1078 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); 1079 1080 usb_host_iso_free_all(s); 1081 1082 if (iface >= USB_MAX_INTERFACES) { 1083 p->status = USB_RET_STALL; 1084 return; 1085 } 1086 1087 rc = libusb_set_interface_alt_setting(s->dh, iface, alt); 1088 if (rc != 0) { 1089 usb_host_libusb_error("libusb_set_interface_alt_setting", rc); 1090 p->status = USB_RET_STALL; 1091 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1092 usb_host_nodev(s); 1093 } 1094 return; 1095 } 1096 1097 udev->altsetting[iface] = alt; 1098 usb_host_ep_update(s); 1099 } 1100 1101 static void usb_host_handle_control(USBDevice *udev, USBPacket *p, 1102 int request, int value, int index, 1103 int length, uint8_t *data) 1104 { 1105 USBHostDevice *s = USB_HOST_DEVICE(udev); 1106 USBHostRequest *r; 1107 int rc; 1108 1109 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index); 1110 1111 if (s->dh == NULL) { 1112 p->status = USB_RET_NODEV; 1113 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1114 return; 1115 } 1116 1117 switch (request) { 1118 case DeviceOutRequest | USB_REQ_SET_ADDRESS: 1119 usb_host_set_address(s, value); 1120 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1121 return; 1122 1123 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: 1124 usb_host_set_config(s, value & 0xff, p); 1125 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1126 return; 1127 1128 case InterfaceOutRequest | USB_REQ_SET_INTERFACE: 1129 usb_host_set_interface(s, index, value, p); 1130 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1131 return; 1132 1133 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 1134 if (value == 0) { /* clear halt */ 1135 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 1136 libusb_clear_halt(s->dh, index); 1137 usb_ep_set_halted(udev, pid, index & 0x0f, 0); 1138 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1139 return; 1140 } 1141 } 1142 1143 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8); 1144 r->cbuf = data; 1145 r->clen = length; 1146 memcpy(r->buffer, udev->setup_buf, 8); 1147 if (!r->in) { 1148 memcpy(r->buffer + 8, r->cbuf, r->clen); 1149 } 1150 1151 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer, 1152 usb_host_req_complete_ctrl, r, 1153 CONTROL_TIMEOUT); 1154 rc = libusb_submit_transfer(r->xfer); 1155 if (rc != 0) { 1156 p->status = USB_RET_NODEV; 1157 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1158 p->status, p->actual_length); 1159 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1160 usb_host_nodev(s); 1161 } 1162 return; 1163 } 1164 1165 p->status = USB_RET_ASYNC; 1166 } 1167 1168 static void usb_host_handle_data(USBDevice *udev, USBPacket *p) 1169 { 1170 USBHostDevice *s = USB_HOST_DEVICE(udev); 1171 USBHostRequest *r; 1172 size_t size; 1173 int ep, rc; 1174 1175 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) { 1176 p->status = USB_RET_ADD_TO_QUEUE; 1177 return; 1178 } 1179 1180 trace_usb_host_req_data(s->bus_num, s->addr, p, 1181 p->pid == USB_TOKEN_IN, 1182 p->ep->nr, p->iov.size); 1183 1184 if (s->dh == NULL) { 1185 p->status = USB_RET_NODEV; 1186 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1187 return; 1188 } 1189 if (p->ep->halted) { 1190 p->status = USB_RET_STALL; 1191 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1192 return; 1193 } 1194 1195 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) { 1196 case USB_ENDPOINT_XFER_BULK: 1197 size = usb_packet_size(p); 1198 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size); 1199 if (!r->in) { 1200 usb_packet_copy(p, r->buffer, size); 1201 } 1202 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1203 libusb_fill_bulk_transfer(r->xfer, s->dh, ep, 1204 r->buffer, size, 1205 usb_host_req_complete_data, r, 1206 BULK_TIMEOUT); 1207 break; 1208 case USB_ENDPOINT_XFER_INT: 1209 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size); 1210 if (!r->in) { 1211 usb_packet_copy(p, r->buffer, p->iov.size); 1212 } 1213 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1214 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep, 1215 r->buffer, p->iov.size, 1216 usb_host_req_complete_data, r, 1217 INTR_TIMEOUT); 1218 break; 1219 case USB_ENDPOINT_XFER_ISOC: 1220 if (p->pid == USB_TOKEN_IN) { 1221 usb_host_iso_data_in(s, p); 1222 } else { 1223 usb_host_iso_data_out(s, p); 1224 } 1225 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1226 p->status, p->actual_length); 1227 return; 1228 default: 1229 p->status = USB_RET_STALL; 1230 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1231 p->status, p->actual_length); 1232 return; 1233 } 1234 1235 rc = libusb_submit_transfer(r->xfer); 1236 if (rc != 0) { 1237 p->status = USB_RET_NODEV; 1238 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1239 p->status, p->actual_length); 1240 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1241 usb_host_nodev(s); 1242 } 1243 return; 1244 } 1245 1246 p->status = USB_RET_ASYNC; 1247 } 1248 1249 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) 1250 { 1251 if (usb_host_use_combining(ep)) { 1252 usb_ep_combine_input_packets(ep); 1253 } 1254 } 1255 1256 static void usb_host_handle_reset(USBDevice *udev) 1257 { 1258 USBHostDevice *s = USB_HOST_DEVICE(udev); 1259 1260 trace_usb_host_reset(s->bus_num, s->addr); 1261 1262 if (udev->configuration == 0) { 1263 return; 1264 } 1265 usb_host_release_interfaces(s); 1266 libusb_reset_device(s->dh); 1267 usb_host_claim_interfaces(s, 0); 1268 usb_host_ep_update(s); 1269 } 1270 1271 /* 1272 * This is *NOT* about restoring state. We have absolutely no idea 1273 * what state the host device is in at the moment and whenever it is 1274 * still present in the first place. Attemping to contine where we 1275 * left off is impossible. 1276 * 1277 * What we are going to to to here is emulate a surprise removal of 1278 * the usb device passed through, then kick host scan so the device 1279 * will get re-attached (and re-initialized by the guest) in case it 1280 * is still present. 1281 * 1282 * As the device removal will change the state of other devices (usb 1283 * host controller, most likely interrupt controller too) we have to 1284 * wait with it until *all* vmstate is loaded. Thus post_load just 1285 * kicks a bottom half which then does the actual work. 1286 */ 1287 static void usb_host_post_load_bh(void *opaque) 1288 { 1289 USBHostDevice *dev = opaque; 1290 USBDevice *udev = USB_DEVICE(dev); 1291 1292 if (dev->dh != NULL) { 1293 usb_host_close(dev); 1294 } 1295 if (udev->attached) { 1296 usb_device_detach(udev); 1297 } 1298 usb_host_auto_check(NULL); 1299 } 1300 1301 static int usb_host_post_load(void *opaque, int version_id) 1302 { 1303 USBHostDevice *dev = opaque; 1304 1305 if (!dev->bh_postld) { 1306 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev); 1307 } 1308 qemu_bh_schedule(dev->bh_postld); 1309 return 0; 1310 } 1311 1312 static const VMStateDescription vmstate_usb_host = { 1313 .name = "usb-host", 1314 .version_id = 1, 1315 .minimum_version_id = 1, 1316 .post_load = usb_host_post_load, 1317 .fields = (VMStateField[]) { 1318 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice), 1319 VMSTATE_END_OF_LIST() 1320 } 1321 }; 1322 1323 static Property usb_host_dev_properties[] = { 1324 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), 1325 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), 1326 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port), 1327 DEFINE_PROP_HEX32("vendorid", USBHostDevice, match.vendor_id, 0), 1328 DEFINE_PROP_HEX32("productid", USBHostDevice, match.product_id, 0), 1329 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), 1330 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32), 1331 DEFINE_PROP_INT32("bootindex", USBHostDevice, bootindex, -1), 1332 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel, 1333 LIBUSB_LOG_LEVEL_WARNING), 1334 DEFINE_PROP_BIT("pipeline", USBHostDevice, options, 1335 USB_HOST_OPT_PIPELINE, true), 1336 DEFINE_PROP_END_OF_LIST(), 1337 }; 1338 1339 static void usb_host_class_initfn(ObjectClass *klass, void *data) 1340 { 1341 DeviceClass *dc = DEVICE_CLASS(klass); 1342 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1343 1344 uc->init = usb_host_initfn; 1345 uc->product_desc = "USB Host Device"; 1346 uc->cancel_packet = usb_host_cancel_packet; 1347 uc->handle_data = usb_host_handle_data; 1348 uc->handle_control = usb_host_handle_control; 1349 uc->handle_reset = usb_host_handle_reset; 1350 uc->handle_destroy = usb_host_handle_destroy; 1351 uc->flush_ep_queue = usb_host_flush_ep_queue; 1352 dc->vmsd = &vmstate_usb_host; 1353 dc->props = usb_host_dev_properties; 1354 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1355 } 1356 1357 static TypeInfo usb_host_dev_info = { 1358 .name = TYPE_USB_HOST_DEVICE, 1359 .parent = TYPE_USB_DEVICE, 1360 .instance_size = sizeof(USBHostDevice), 1361 .class_init = usb_host_class_initfn, 1362 }; 1363 1364 static void usb_host_register_types(void) 1365 { 1366 type_register_static(&usb_host_dev_info); 1367 } 1368 1369 type_init(usb_host_register_types) 1370 1371 /* ------------------------------------------------------------------------ */ 1372 1373 static QEMUTimer *usb_auto_timer; 1374 static VMChangeStateEntry *usb_vmstate; 1375 1376 static void usb_host_vm_state(void *unused, int running, RunState state) 1377 { 1378 if (running) { 1379 usb_host_auto_check(unused); 1380 } 1381 } 1382 1383 static void usb_host_auto_check(void *unused) 1384 { 1385 struct USBHostDevice *s; 1386 struct USBAutoFilter *f; 1387 libusb_device **devs; 1388 struct libusb_device_descriptor ddesc; 1389 int unconnected = 0; 1390 int i, n; 1391 1392 if (usb_host_init() != 0) { 1393 return; 1394 } 1395 1396 if (runstate_is_running()) { 1397 n = libusb_get_device_list(ctx, &devs); 1398 for (i = 0; i < n; i++) { 1399 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1400 continue; 1401 } 1402 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1403 continue; 1404 } 1405 QTAILQ_FOREACH(s, &hostdevs, next) { 1406 f = &s->match; 1407 if (f->bus_num > 0 && 1408 f->bus_num != libusb_get_bus_number(devs[i])) { 1409 continue; 1410 } 1411 if (f->addr > 0 && 1412 f->addr != libusb_get_device_address(devs[i])) { 1413 continue; 1414 } 1415 if (f->port != NULL) { 1416 char port[16] = "-"; 1417 usb_host_get_port(devs[i], port, sizeof(port)); 1418 if (strcmp(f->port, port) != 0) { 1419 continue; 1420 } 1421 } 1422 if (f->vendor_id > 0 && 1423 f->vendor_id != ddesc.idVendor) { 1424 continue; 1425 } 1426 if (f->product_id > 0 && 1427 f->product_id != ddesc.idProduct) { 1428 continue; 1429 } 1430 1431 /* We got a match */ 1432 s->seen++; 1433 if (s->errcount >= 3) { 1434 continue; 1435 } 1436 if (s->dh != NULL) { 1437 continue; 1438 } 1439 if (usb_host_open(s, devs[i]) < 0) { 1440 s->errcount++; 1441 continue; 1442 } 1443 break; 1444 } 1445 } 1446 libusb_free_device_list(devs, 1); 1447 1448 QTAILQ_FOREACH(s, &hostdevs, next) { 1449 if (s->dh == NULL) { 1450 unconnected++; 1451 } 1452 if (s->seen == 0) { 1453 if (s->dh) { 1454 usb_host_close(s); 1455 } 1456 s->errcount = 0; 1457 } 1458 s->seen = 0; 1459 } 1460 1461 #if 0 1462 if (unconnected == 0) { 1463 /* nothing to watch */ 1464 if (usb_auto_timer) { 1465 qemu_del_timer(usb_auto_timer); 1466 trace_usb_host_auto_scan_disabled(); 1467 } 1468 return; 1469 } 1470 #endif 1471 } 1472 1473 if (!usb_vmstate) { 1474 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL); 1475 } 1476 if (!usb_auto_timer) { 1477 usb_auto_timer = qemu_new_timer_ms(rt_clock, usb_host_auto_check, NULL); 1478 if (!usb_auto_timer) { 1479 return; 1480 } 1481 trace_usb_host_auto_scan_enabled(); 1482 } 1483 qemu_mod_timer(usb_auto_timer, qemu_get_clock_ms(rt_clock) + 2000); 1484 } 1485 1486 void usb_host_info(Monitor *mon, const QDict *qdict) 1487 { 1488 libusb_device **devs; 1489 struct libusb_device_descriptor ddesc; 1490 char port[16]; 1491 int i, n; 1492 1493 if (usb_host_init() != 0) { 1494 return; 1495 } 1496 1497 n = libusb_get_device_list(ctx, &devs); 1498 for (i = 0; i < n; i++) { 1499 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1500 continue; 1501 } 1502 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1503 continue; 1504 } 1505 usb_host_get_port(devs[i], port, sizeof(port)); 1506 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n", 1507 libusb_get_bus_number(devs[i]), 1508 libusb_get_device_address(devs[i]), 1509 port, 1510 speed_name[libusb_get_device_speed(devs[i])]); 1511 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass); 1512 monitor_printf(mon, " USB device %04x:%04x", 1513 ddesc.idVendor, ddesc.idProduct); 1514 if (ddesc.iProduct) { 1515 libusb_device_handle *handle; 1516 if (libusb_open(devs[i], &handle) == 0) { 1517 unsigned char name[64] = ""; 1518 libusb_get_string_descriptor_ascii(handle, 1519 ddesc.iProduct, 1520 name, sizeof(name)); 1521 libusb_close(handle); 1522 monitor_printf(mon, ", %s", name); 1523 } 1524 } 1525 monitor_printf(mon, "\n"); 1526 } 1527 libusb_free_device_list(devs, 1); 1528 } 1529