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_detach_kernel(USBHostDevice *s); 141 static void usb_host_attach_kernel(USBHostDevice *s); 142 143 /* ------------------------------------------------------------------------ */ 144 145 #define CONTROL_TIMEOUT 10000 /* 10 sec */ 146 #define BULK_TIMEOUT 0 /* unlimited */ 147 #define INTR_TIMEOUT 0 /* unlimited */ 148 149 static const char *speed_name[] = { 150 [LIBUSB_SPEED_UNKNOWN] = "?", 151 [LIBUSB_SPEED_LOW] = "1.5", 152 [LIBUSB_SPEED_FULL] = "12", 153 [LIBUSB_SPEED_HIGH] = "480", 154 [LIBUSB_SPEED_SUPER] = "5000", 155 }; 156 157 static const unsigned int speed_map[] = { 158 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW, 159 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL, 160 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH, 161 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER, 162 }; 163 164 static const unsigned int status_map[] = { 165 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS, 166 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR, 167 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR, 168 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR, 169 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL, 170 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV, 171 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE, 172 }; 173 174 static const char *err_names[] = { 175 [-LIBUSB_ERROR_IO] = "IO", 176 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM", 177 [-LIBUSB_ERROR_ACCESS] = "ACCESS", 178 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE", 179 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND", 180 [-LIBUSB_ERROR_BUSY] = "BUSY", 181 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT", 182 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW", 183 [-LIBUSB_ERROR_PIPE] = "PIPE", 184 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED", 185 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM", 186 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED", 187 [-LIBUSB_ERROR_OTHER] = "OTHER", 188 }; 189 190 static libusb_context *ctx; 191 static uint32_t loglevel; 192 193 static void usb_host_handle_fd(void *opaque) 194 { 195 struct timeval tv = { 0, 0 }; 196 libusb_handle_events_timeout(ctx, &tv); 197 } 198 199 static void usb_host_add_fd(int fd, short events, void *user_data) 200 { 201 qemu_set_fd_handler(fd, 202 (events & POLLIN) ? usb_host_handle_fd : NULL, 203 (events & POLLOUT) ? usb_host_handle_fd : NULL, 204 ctx); 205 } 206 207 static void usb_host_del_fd(int fd, void *user_data) 208 { 209 qemu_set_fd_handler(fd, NULL, NULL, NULL); 210 } 211 212 static int usb_host_init(void) 213 { 214 const struct libusb_pollfd **poll; 215 int i, rc; 216 217 if (ctx) { 218 return 0; 219 } 220 rc = libusb_init(&ctx); 221 if (rc != 0) { 222 return -1; 223 } 224 libusb_set_debug(ctx, loglevel); 225 226 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd, 227 usb_host_del_fd, 228 ctx); 229 poll = libusb_get_pollfds(ctx); 230 if (poll) { 231 for (i = 0; poll[i] != NULL; i++) { 232 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx); 233 } 234 } 235 free(poll); 236 return 0; 237 } 238 239 static int usb_host_get_port(libusb_device *dev, char *port, size_t len) 240 { 241 uint8_t path[7]; 242 size_t off; 243 int rc, i; 244 245 #if LIBUSBX_API_VERSION >= 0x01000102 246 rc = libusb_get_port_numbers(dev, path, 7); 247 #else 248 rc = libusb_get_port_path(ctx, dev, path, 7); 249 #endif 250 if (rc < 0) { 251 return 0; 252 } 253 off = snprintf(port, len, "%d", path[0]); 254 for (i = 1; i < rc; i++) { 255 off += snprintf(port+off, len-off, ".%d", path[i]); 256 } 257 return off; 258 } 259 260 static void usb_host_libusb_error(const char *func, int rc) 261 { 262 const char *errname; 263 264 if (rc >= 0) { 265 return; 266 } 267 268 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) { 269 errname = err_names[-rc]; 270 } else { 271 errname = "?"; 272 } 273 fprintf(stderr, "%s: %d [%s]\n", func, rc, errname); 274 } 275 276 /* ------------------------------------------------------------------------ */ 277 278 static bool usb_host_use_combining(USBEndpoint *ep) 279 { 280 int type; 281 282 if (!ep->pipeline) { 283 return false; 284 } 285 if (ep->pid != USB_TOKEN_IN) { 286 return false; 287 } 288 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr); 289 if (type != USB_ENDPOINT_XFER_BULK) { 290 return false; 291 } 292 return true; 293 } 294 295 /* ------------------------------------------------------------------------ */ 296 297 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p, 298 bool in, size_t bufsize) 299 { 300 USBHostRequest *r = g_new0(USBHostRequest, 1); 301 302 r->host = s; 303 r->p = p; 304 r->in = in; 305 r->xfer = libusb_alloc_transfer(0); 306 if (bufsize) { 307 r->buffer = g_malloc(bufsize); 308 } 309 QTAILQ_INSERT_TAIL(&s->requests, r, next); 310 return r; 311 } 312 313 static void usb_host_req_free(USBHostRequest *r) 314 { 315 if (r->host) { 316 QTAILQ_REMOVE(&r->host->requests, r, next); 317 } 318 libusb_free_transfer(r->xfer); 319 g_free(r->buffer); 320 g_free(r); 321 } 322 323 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p) 324 { 325 USBHostRequest *r; 326 327 QTAILQ_FOREACH(r, &s->requests, next) { 328 if (r->p == p) { 329 return r; 330 } 331 } 332 return NULL; 333 } 334 335 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer) 336 { 337 USBHostRequest *r = xfer->user_data; 338 USBHostDevice *s = r->host; 339 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 340 341 if (r->p == NULL) { 342 goto out; /* request was canceled */ 343 } 344 345 r->p->status = status_map[xfer->status]; 346 r->p->actual_length = xfer->actual_length; 347 if (r->in && xfer->actual_length) { 348 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length); 349 } 350 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 351 r->p->status, r->p->actual_length); 352 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 353 354 out: 355 usb_host_req_free(r); 356 if (disconnect) { 357 usb_host_nodev(s); 358 } 359 } 360 361 static void usb_host_req_complete_data(struct libusb_transfer *xfer) 362 { 363 USBHostRequest *r = xfer->user_data; 364 USBHostDevice *s = r->host; 365 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 366 367 if (r->p == NULL) { 368 goto out; /* request was canceled */ 369 } 370 371 r->p->status = status_map[xfer->status]; 372 if (r->in && xfer->actual_length) { 373 usb_packet_copy(r->p, r->buffer, xfer->actual_length); 374 } 375 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 376 r->p->status, r->p->actual_length); 377 if (usb_host_use_combining(r->p->ep)) { 378 usb_combined_input_packet_complete(USB_DEVICE(s), r->p); 379 } else { 380 usb_packet_complete(USB_DEVICE(s), r->p); 381 } 382 383 out: 384 usb_host_req_free(r); 385 if (disconnect) { 386 usb_host_nodev(s); 387 } 388 } 389 390 static void usb_host_req_abort(USBHostRequest *r) 391 { 392 USBHostDevice *s = r->host; 393 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC); 394 395 if (inflight) { 396 r->p->status = USB_RET_NODEV; 397 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 398 r->p->status, r->p->actual_length); 399 if (r->p->ep->nr == 0) { 400 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 401 } else { 402 usb_packet_complete(USB_DEVICE(s), r->p); 403 } 404 r->p = NULL; 405 } 406 407 QTAILQ_REMOVE(&r->host->requests, r, next); 408 r->host = NULL; 409 410 if (inflight) { 411 libusb_cancel_transfer(r->xfer); 412 } 413 } 414 415 /* ------------------------------------------------------------------------ */ 416 417 static void usb_host_req_complete_iso(struct libusb_transfer *transfer) 418 { 419 USBHostIsoXfer *xfer = transfer->user_data; 420 421 if (!xfer) { 422 /* USBHostIsoXfer released while inflight */ 423 g_free(transfer->buffer); 424 libusb_free_transfer(transfer); 425 return; 426 } 427 428 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next); 429 if (QTAILQ_EMPTY(&xfer->ring->inflight)) { 430 USBHostDevice *s = xfer->ring->host; 431 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr); 432 } 433 if (xfer->ring->ep->pid == USB_TOKEN_IN) { 434 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next); 435 } else { 436 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next); 437 } 438 } 439 440 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep) 441 { 442 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1); 443 USBHostIsoXfer *xfer; 444 /* FIXME: check interval (for now assume one xfer per frame) */ 445 int packets = s->iso_urb_frames; 446 int i; 447 448 ring->host = s; 449 ring->ep = ep; 450 QTAILQ_INIT(&ring->unused); 451 QTAILQ_INIT(&ring->inflight); 452 QTAILQ_INIT(&ring->copy); 453 QTAILQ_INSERT_TAIL(&s->isorings, ring, next); 454 455 for (i = 0; i < s->iso_urb_count; i++) { 456 xfer = g_new0(USBHostIsoXfer, 1); 457 xfer->ring = ring; 458 xfer->xfer = libusb_alloc_transfer(packets); 459 xfer->xfer->dev_handle = s->dh; 460 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; 461 462 xfer->xfer->endpoint = ring->ep->nr; 463 if (ring->ep->pid == USB_TOKEN_IN) { 464 xfer->xfer->endpoint |= USB_DIR_IN; 465 } 466 xfer->xfer->callback = usb_host_req_complete_iso; 467 xfer->xfer->user_data = xfer; 468 469 xfer->xfer->num_iso_packets = packets; 470 xfer->xfer->length = ring->ep->max_packet_size * packets; 471 xfer->xfer->buffer = g_malloc0(xfer->xfer->length); 472 473 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 474 } 475 476 return ring; 477 } 478 479 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep) 480 { 481 USBHostIsoRing *ring; 482 483 QTAILQ_FOREACH(ring, &s->isorings, next) { 484 if (ring->ep == ep) { 485 return ring; 486 } 487 } 488 return NULL; 489 } 490 491 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer) 492 { 493 libusb_set_iso_packet_lengths(xfer->xfer, 494 xfer->ring->ep->max_packet_size); 495 xfer->packet = 0; 496 xfer->copy_complete = false; 497 } 498 499 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight) 500 { 501 if (inflight) { 502 xfer->xfer->user_data = NULL; 503 } else { 504 g_free(xfer->xfer->buffer); 505 libusb_free_transfer(xfer->xfer); 506 } 507 g_free(xfer); 508 } 509 510 static void usb_host_iso_free(USBHostIsoRing *ring) 511 { 512 USBHostIsoXfer *xfer; 513 514 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) { 515 QTAILQ_REMOVE(&ring->inflight, xfer, next); 516 usb_host_iso_free_xfer(xfer, true); 517 } 518 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 519 QTAILQ_REMOVE(&ring->unused, xfer, next); 520 usb_host_iso_free_xfer(xfer, false); 521 } 522 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) { 523 QTAILQ_REMOVE(&ring->copy, xfer, next); 524 usb_host_iso_free_xfer(xfer, false); 525 } 526 527 QTAILQ_REMOVE(&ring->host->isorings, ring, next); 528 g_free(ring); 529 } 530 531 static void usb_host_iso_free_all(USBHostDevice *s) 532 { 533 USBHostIsoRing *ring; 534 535 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) { 536 usb_host_iso_free(ring); 537 } 538 } 539 540 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p) 541 { 542 unsigned int psize; 543 unsigned char *buf; 544 545 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet); 546 if (p->pid == USB_TOKEN_OUT) { 547 psize = p->iov.size; 548 if (psize > xfer->ring->ep->max_packet_size) { 549 /* should not happen (guest bug) */ 550 psize = xfer->ring->ep->max_packet_size; 551 } 552 xfer->xfer->iso_packet_desc[xfer->packet].length = psize; 553 } else { 554 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length; 555 if (psize > p->iov.size) { 556 /* should not happen (guest bug) */ 557 psize = p->iov.size; 558 } 559 } 560 usb_packet_copy(p, buf, psize); 561 xfer->packet++; 562 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets); 563 return xfer->copy_complete; 564 } 565 566 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p) 567 { 568 USBHostIsoRing *ring; 569 USBHostIsoXfer *xfer; 570 bool disconnect = false; 571 int rc; 572 573 ring = usb_host_iso_find(s, p->ep); 574 if (ring == NULL) { 575 ring = usb_host_iso_alloc(s, p->ep); 576 } 577 578 /* copy data to guest */ 579 xfer = QTAILQ_FIRST(&ring->copy); 580 if (xfer != NULL) { 581 if (usb_host_iso_data_copy(xfer, p)) { 582 QTAILQ_REMOVE(&ring->copy, xfer, next); 583 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 584 } 585 } 586 587 /* submit empty bufs to host */ 588 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 589 QTAILQ_REMOVE(&ring->unused, xfer, next); 590 usb_host_iso_reset_xfer(xfer); 591 rc = libusb_submit_transfer(xfer->xfer); 592 if (rc != 0) { 593 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 594 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 595 if (rc == LIBUSB_ERROR_NO_DEVICE) { 596 disconnect = true; 597 } 598 break; 599 } 600 if (QTAILQ_EMPTY(&ring->inflight)) { 601 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 602 } 603 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 604 } 605 606 if (disconnect) { 607 usb_host_nodev(s); 608 } 609 } 610 611 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p) 612 { 613 USBHostIsoRing *ring; 614 USBHostIsoXfer *xfer; 615 bool disconnect = false; 616 int rc, filled = 0; 617 618 ring = usb_host_iso_find(s, p->ep); 619 if (ring == NULL) { 620 ring = usb_host_iso_alloc(s, p->ep); 621 } 622 623 /* copy data from guest */ 624 xfer = QTAILQ_FIRST(&ring->copy); 625 while (xfer != NULL && xfer->copy_complete) { 626 filled++; 627 xfer = QTAILQ_NEXT(xfer, next); 628 } 629 if (xfer == NULL) { 630 xfer = QTAILQ_FIRST(&ring->unused); 631 if (xfer == NULL) { 632 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr); 633 return; 634 } 635 QTAILQ_REMOVE(&ring->unused, xfer, next); 636 usb_host_iso_reset_xfer(xfer); 637 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next); 638 } 639 usb_host_iso_data_copy(xfer, p); 640 641 if (QTAILQ_EMPTY(&ring->inflight)) { 642 /* wait until half of our buffers are filled 643 before kicking the iso out stream */ 644 if (filled*2 < s->iso_urb_count) { 645 return; 646 } 647 } 648 649 /* submit filled bufs to host */ 650 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL && 651 xfer->copy_complete) { 652 QTAILQ_REMOVE(&ring->copy, xfer, next); 653 rc = libusb_submit_transfer(xfer->xfer); 654 if (rc != 0) { 655 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 656 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 657 if (rc == LIBUSB_ERROR_NO_DEVICE) { 658 disconnect = true; 659 } 660 break; 661 } 662 if (QTAILQ_EMPTY(&ring->inflight)) { 663 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 664 } 665 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 666 } 667 668 if (disconnect) { 669 usb_host_nodev(s); 670 } 671 } 672 673 /* ------------------------------------------------------------------------ */ 674 675 static bool usb_host_full_speed_compat(USBHostDevice *s) 676 { 677 struct libusb_config_descriptor *conf; 678 const struct libusb_interface_descriptor *intf; 679 const struct libusb_endpoint_descriptor *endp; 680 uint8_t type; 681 int rc, c, i, a, e; 682 683 for (c = 0;; c++) { 684 rc = libusb_get_config_descriptor(s->dev, c, &conf); 685 if (rc != 0) { 686 break; 687 } 688 for (i = 0; i < conf->bNumInterfaces; i++) { 689 for (a = 0; a < conf->interface[i].num_altsetting; a++) { 690 intf = &conf->interface[i].altsetting[a]; 691 for (e = 0; e < intf->bNumEndpoints; e++) { 692 endp = &intf->endpoint[e]; 693 type = endp->bmAttributes & 0x3; 694 switch (type) { 695 case 0x01: /* ISO */ 696 return false; 697 case 0x03: /* INTERRUPT */ 698 if (endp->wMaxPacketSize > 64) { 699 return false; 700 } 701 break; 702 } 703 } 704 } 705 } 706 libusb_free_config_descriptor(conf); 707 } 708 return true; 709 } 710 711 static void usb_host_ep_update(USBHostDevice *s) 712 { 713 static const char *tname[] = { 714 [USB_ENDPOINT_XFER_CONTROL] = "control", 715 [USB_ENDPOINT_XFER_ISOC] = "isoc", 716 [USB_ENDPOINT_XFER_BULK] = "bulk", 717 [USB_ENDPOINT_XFER_INT] = "int", 718 }; 719 USBDevice *udev = USB_DEVICE(s); 720 struct libusb_config_descriptor *conf; 721 const struct libusb_interface_descriptor *intf; 722 const struct libusb_endpoint_descriptor *endp; 723 uint8_t devep, type; 724 int pid, ep; 725 int rc, i, e; 726 727 usb_ep_reset(udev); 728 rc = libusb_get_active_config_descriptor(s->dev, &conf); 729 if (rc != 0) { 730 return; 731 } 732 trace_usb_host_parse_config(s->bus_num, s->addr, 733 conf->bConfigurationValue, true); 734 735 for (i = 0; i < conf->bNumInterfaces; i++) { 736 assert(udev->altsetting[i] < conf->interface[i].num_altsetting); 737 intf = &conf->interface[i].altsetting[udev->altsetting[i]]; 738 trace_usb_host_parse_interface(s->bus_num, s->addr, 739 intf->bInterfaceNumber, 740 intf->bAlternateSetting, true); 741 for (e = 0; e < intf->bNumEndpoints; e++) { 742 endp = &intf->endpoint[e]; 743 744 devep = endp->bEndpointAddress; 745 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 746 ep = devep & 0xf; 747 type = endp->bmAttributes & 0x3; 748 749 if (ep == 0) { 750 trace_usb_host_parse_error(s->bus_num, s->addr, 751 "invalid endpoint address"); 752 return; 753 } 754 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) { 755 trace_usb_host_parse_error(s->bus_num, s->addr, 756 "duplicate endpoint address"); 757 return; 758 } 759 760 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep, 761 (devep & USB_DIR_IN) ? "in" : "out", 762 tname[type], true); 763 usb_ep_set_max_packet_size(udev, pid, ep, 764 endp->wMaxPacketSize); 765 usb_ep_set_type(udev, pid, ep, type); 766 usb_ep_set_ifnum(udev, pid, ep, i); 767 usb_ep_set_halted(udev, pid, ep, 0); 768 } 769 } 770 771 libusb_free_config_descriptor(conf); 772 } 773 774 static int usb_host_open(USBHostDevice *s, libusb_device *dev) 775 { 776 USBDevice *udev = USB_DEVICE(s); 777 int bus_num = libusb_get_bus_number(dev); 778 int addr = libusb_get_device_address(dev); 779 int rc; 780 781 trace_usb_host_open_started(bus_num, addr); 782 783 if (s->dh != NULL) { 784 goto fail; 785 } 786 rc = libusb_open(dev, &s->dh); 787 if (rc != 0) { 788 goto fail; 789 } 790 791 s->dev = dev; 792 s->bus_num = bus_num; 793 s->addr = addr; 794 795 usb_host_detach_kernel(s); 796 797 libusb_get_device_descriptor(dev, &s->ddesc); 798 usb_host_get_port(s->dev, s->port, sizeof(s->port)); 799 800 usb_ep_init(udev); 801 usb_host_ep_update(s); 802 803 udev->speed = speed_map[libusb_get_device_speed(dev)]; 804 udev->speedmask = (1 << udev->speed); 805 if (udev->speed == USB_SPEED_HIGH && usb_host_full_speed_compat(s)) { 806 udev->speedmask |= USB_SPEED_MASK_FULL; 807 } 808 809 if (s->ddesc.iProduct) { 810 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct, 811 (unsigned char *)udev->product_desc, 812 sizeof(udev->product_desc)); 813 } else { 814 snprintf(udev->product_desc, sizeof(udev->product_desc), 815 "host:%d.%d", bus_num, addr); 816 } 817 818 rc = usb_device_attach(udev); 819 if (rc) { 820 goto fail; 821 } 822 823 trace_usb_host_open_success(bus_num, addr); 824 return 0; 825 826 fail: 827 trace_usb_host_open_failure(bus_num, addr); 828 if (s->dh != NULL) { 829 libusb_close(s->dh); 830 s->dh = NULL; 831 s->dev = NULL; 832 } 833 return -1; 834 } 835 836 static void usb_host_abort_xfers(USBHostDevice *s) 837 { 838 USBHostRequest *r, *rtmp; 839 840 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { 841 usb_host_req_abort(r); 842 } 843 } 844 845 static int usb_host_close(USBHostDevice *s) 846 { 847 USBDevice *udev = USB_DEVICE(s); 848 849 if (s->dh == NULL) { 850 return -1; 851 } 852 853 trace_usb_host_close(s->bus_num, s->addr); 854 855 usb_host_abort_xfers(s); 856 usb_host_iso_free_all(s); 857 858 if (udev->attached) { 859 usb_device_detach(udev); 860 } 861 862 usb_host_release_interfaces(s); 863 libusb_reset_device(s->dh); 864 usb_host_attach_kernel(s); 865 libusb_close(s->dh); 866 s->dh = NULL; 867 s->dev = NULL; 868 869 usb_host_auto_check(NULL); 870 return 0; 871 } 872 873 static void usb_host_nodev_bh(void *opaque) 874 { 875 USBHostDevice *s = opaque; 876 usb_host_close(s); 877 } 878 879 static void usb_host_nodev(USBHostDevice *s) 880 { 881 if (!s->bh_nodev) { 882 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s); 883 } 884 qemu_bh_schedule(s->bh_nodev); 885 } 886 887 static void usb_host_exit_notifier(struct Notifier *n, void *data) 888 { 889 USBHostDevice *s = container_of(n, USBHostDevice, exit); 890 891 if (s->dh) { 892 usb_host_release_interfaces(s); 893 usb_host_attach_kernel(s); 894 } 895 } 896 897 static int usb_host_initfn(USBDevice *udev) 898 { 899 USBHostDevice *s = USB_HOST_DEVICE(udev); 900 901 loglevel = s->loglevel; 902 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST); 903 udev->auto_attach = 0; 904 QTAILQ_INIT(&s->requests); 905 QTAILQ_INIT(&s->isorings); 906 907 s->exit.notify = usb_host_exit_notifier; 908 qemu_add_exit_notifier(&s->exit); 909 910 QTAILQ_INSERT_TAIL(&hostdevs, s, next); 911 add_boot_device_path(s->bootindex, &udev->qdev, NULL); 912 usb_host_auto_check(NULL); 913 return 0; 914 } 915 916 static void usb_host_handle_destroy(USBDevice *udev) 917 { 918 USBHostDevice *s = USB_HOST_DEVICE(udev); 919 920 qemu_remove_exit_notifier(&s->exit); 921 QTAILQ_REMOVE(&hostdevs, s, next); 922 usb_host_close(s); 923 } 924 925 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p) 926 { 927 USBHostDevice *s = USB_HOST_DEVICE(udev); 928 USBHostRequest *r; 929 930 if (p->combined) { 931 usb_combined_packet_cancel(udev, p); 932 return; 933 } 934 935 trace_usb_host_req_canceled(s->bus_num, s->addr, p); 936 937 r = usb_host_req_find(s, p); 938 if (r && r->p) { 939 r->p = NULL; /* mark as dead */ 940 libusb_cancel_transfer(r->xfer); 941 } 942 } 943 944 static void usb_host_detach_kernel(USBHostDevice *s) 945 { 946 struct libusb_config_descriptor *conf; 947 int rc, i; 948 949 rc = libusb_get_active_config_descriptor(s->dev, &conf); 950 if (rc != 0) { 951 return; 952 } 953 for (i = 0; i < conf->bNumInterfaces; i++) { 954 rc = libusb_kernel_driver_active(s->dh, i); 955 usb_host_libusb_error("libusb_kernel_driver_active", rc); 956 if (rc != 1) { 957 continue; 958 } 959 trace_usb_host_detach_kernel(s->bus_num, s->addr, i); 960 rc = libusb_detach_kernel_driver(s->dh, i); 961 usb_host_libusb_error("libusb_detach_kernel_driver", rc); 962 s->ifs[i].detached = true; 963 } 964 libusb_free_config_descriptor(conf); 965 } 966 967 static void usb_host_attach_kernel(USBHostDevice *s) 968 { 969 struct libusb_config_descriptor *conf; 970 int rc, i; 971 972 rc = libusb_get_active_config_descriptor(s->dev, &conf); 973 if (rc != 0) { 974 return; 975 } 976 for (i = 0; i < conf->bNumInterfaces; i++) { 977 if (!s->ifs[i].detached) { 978 continue; 979 } 980 trace_usb_host_attach_kernel(s->bus_num, s->addr, i); 981 libusb_attach_kernel_driver(s->dh, i); 982 s->ifs[i].detached = false; 983 } 984 libusb_free_config_descriptor(conf); 985 } 986 987 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration) 988 { 989 USBDevice *udev = USB_DEVICE(s); 990 struct libusb_config_descriptor *conf; 991 int rc, i; 992 993 for (i = 0; i < USB_MAX_INTERFACES; i++) { 994 udev->altsetting[i] = 0; 995 } 996 udev->ninterfaces = 0; 997 udev->configuration = 0; 998 999 usb_host_detach_kernel(s); 1000 1001 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1002 if (rc != 0) { 1003 if (rc == LIBUSB_ERROR_NOT_FOUND) { 1004 /* address state - ignore */ 1005 return USB_RET_SUCCESS; 1006 } 1007 return USB_RET_STALL; 1008 } 1009 1010 for (i = 0; i < conf->bNumInterfaces; i++) { 1011 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); 1012 rc = libusb_claim_interface(s->dh, i); 1013 usb_host_libusb_error("libusb_claim_interface", rc); 1014 if (rc != 0) { 1015 return USB_RET_STALL; 1016 } 1017 s->ifs[i].claimed = true; 1018 } 1019 1020 udev->ninterfaces = conf->bNumInterfaces; 1021 udev->configuration = configuration; 1022 1023 libusb_free_config_descriptor(conf); 1024 return USB_RET_SUCCESS; 1025 } 1026 1027 static void usb_host_release_interfaces(USBHostDevice *s) 1028 { 1029 USBDevice *udev = USB_DEVICE(s); 1030 int i, rc; 1031 1032 for (i = 0; i < udev->ninterfaces; i++) { 1033 if (!s->ifs[i].claimed) { 1034 continue; 1035 } 1036 trace_usb_host_release_interface(s->bus_num, s->addr, i); 1037 rc = libusb_release_interface(s->dh, i); 1038 usb_host_libusb_error("libusb_release_interface", rc); 1039 s->ifs[i].claimed = false; 1040 } 1041 } 1042 1043 static void usb_host_set_address(USBHostDevice *s, int addr) 1044 { 1045 USBDevice *udev = USB_DEVICE(s); 1046 1047 trace_usb_host_set_address(s->bus_num, s->addr, addr); 1048 udev->addr = addr; 1049 } 1050 1051 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p) 1052 { 1053 int rc; 1054 1055 trace_usb_host_set_config(s->bus_num, s->addr, config); 1056 1057 usb_host_release_interfaces(s); 1058 rc = libusb_set_configuration(s->dh, config); 1059 if (rc != 0) { 1060 usb_host_libusb_error("libusb_set_configuration", rc); 1061 p->status = USB_RET_STALL; 1062 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1063 usb_host_nodev(s); 1064 } 1065 return; 1066 } 1067 p->status = usb_host_claim_interfaces(s, config); 1068 if (p->status != USB_RET_SUCCESS) { 1069 return; 1070 } 1071 usb_host_ep_update(s); 1072 } 1073 1074 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt, 1075 USBPacket *p) 1076 { 1077 USBDevice *udev = USB_DEVICE(s); 1078 int rc; 1079 1080 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); 1081 1082 usb_host_iso_free_all(s); 1083 1084 if (iface >= USB_MAX_INTERFACES) { 1085 p->status = USB_RET_STALL; 1086 return; 1087 } 1088 1089 rc = libusb_set_interface_alt_setting(s->dh, iface, alt); 1090 if (rc != 0) { 1091 usb_host_libusb_error("libusb_set_interface_alt_setting", rc); 1092 p->status = USB_RET_STALL; 1093 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1094 usb_host_nodev(s); 1095 } 1096 return; 1097 } 1098 1099 udev->altsetting[iface] = alt; 1100 usb_host_ep_update(s); 1101 } 1102 1103 static void usb_host_handle_control(USBDevice *udev, USBPacket *p, 1104 int request, int value, int index, 1105 int length, uint8_t *data) 1106 { 1107 USBHostDevice *s = USB_HOST_DEVICE(udev); 1108 USBHostRequest *r; 1109 int rc; 1110 1111 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index); 1112 1113 if (s->dh == NULL) { 1114 p->status = USB_RET_NODEV; 1115 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1116 return; 1117 } 1118 1119 switch (request) { 1120 case DeviceOutRequest | USB_REQ_SET_ADDRESS: 1121 usb_host_set_address(s, value); 1122 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1123 return; 1124 1125 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: 1126 usb_host_set_config(s, value & 0xff, p); 1127 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1128 return; 1129 1130 case InterfaceOutRequest | USB_REQ_SET_INTERFACE: 1131 usb_host_set_interface(s, index, value, p); 1132 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1133 return; 1134 1135 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 1136 if (value == 0) { /* clear halt */ 1137 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 1138 libusb_clear_halt(s->dh, index); 1139 usb_ep_set_halted(udev, pid, index & 0x0f, 0); 1140 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1141 return; 1142 } 1143 } 1144 1145 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8); 1146 r->cbuf = data; 1147 r->clen = length; 1148 memcpy(r->buffer, udev->setup_buf, 8); 1149 if (!r->in) { 1150 memcpy(r->buffer + 8, r->cbuf, r->clen); 1151 } 1152 1153 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer, 1154 usb_host_req_complete_ctrl, r, 1155 CONTROL_TIMEOUT); 1156 rc = libusb_submit_transfer(r->xfer); 1157 if (rc != 0) { 1158 p->status = USB_RET_NODEV; 1159 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1160 p->status, p->actual_length); 1161 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1162 usb_host_nodev(s); 1163 } 1164 return; 1165 } 1166 1167 p->status = USB_RET_ASYNC; 1168 } 1169 1170 static void usb_host_handle_data(USBDevice *udev, USBPacket *p) 1171 { 1172 USBHostDevice *s = USB_HOST_DEVICE(udev); 1173 USBHostRequest *r; 1174 size_t size; 1175 int ep, rc; 1176 1177 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) { 1178 p->status = USB_RET_ADD_TO_QUEUE; 1179 return; 1180 } 1181 1182 trace_usb_host_req_data(s->bus_num, s->addr, p, 1183 p->pid == USB_TOKEN_IN, 1184 p->ep->nr, p->iov.size); 1185 1186 if (s->dh == NULL) { 1187 p->status = USB_RET_NODEV; 1188 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1189 return; 1190 } 1191 if (p->ep->halted) { 1192 p->status = USB_RET_STALL; 1193 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1194 return; 1195 } 1196 1197 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) { 1198 case USB_ENDPOINT_XFER_BULK: 1199 size = usb_packet_size(p); 1200 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size); 1201 if (!r->in) { 1202 usb_packet_copy(p, r->buffer, size); 1203 } 1204 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1205 libusb_fill_bulk_transfer(r->xfer, s->dh, ep, 1206 r->buffer, size, 1207 usb_host_req_complete_data, r, 1208 BULK_TIMEOUT); 1209 break; 1210 case USB_ENDPOINT_XFER_INT: 1211 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size); 1212 if (!r->in) { 1213 usb_packet_copy(p, r->buffer, p->iov.size); 1214 } 1215 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1216 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep, 1217 r->buffer, p->iov.size, 1218 usb_host_req_complete_data, r, 1219 INTR_TIMEOUT); 1220 break; 1221 case USB_ENDPOINT_XFER_ISOC: 1222 if (p->pid == USB_TOKEN_IN) { 1223 usb_host_iso_data_in(s, p); 1224 } else { 1225 usb_host_iso_data_out(s, p); 1226 } 1227 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1228 p->status, p->actual_length); 1229 return; 1230 default: 1231 p->status = USB_RET_STALL; 1232 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1233 p->status, p->actual_length); 1234 return; 1235 } 1236 1237 rc = libusb_submit_transfer(r->xfer); 1238 if (rc != 0) { 1239 p->status = USB_RET_NODEV; 1240 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1241 p->status, p->actual_length); 1242 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1243 usb_host_nodev(s); 1244 } 1245 return; 1246 } 1247 1248 p->status = USB_RET_ASYNC; 1249 } 1250 1251 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) 1252 { 1253 if (usb_host_use_combining(ep)) { 1254 usb_ep_combine_input_packets(ep); 1255 } 1256 } 1257 1258 static void usb_host_handle_reset(USBDevice *udev) 1259 { 1260 USBHostDevice *s = USB_HOST_DEVICE(udev); 1261 int rc; 1262 1263 trace_usb_host_reset(s->bus_num, s->addr); 1264 1265 rc = libusb_reset_device(s->dh); 1266 if (rc != 0) { 1267 usb_host_nodev(s); 1268 } 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_UINT32("vendorid", USBHostDevice, match.vendor_id, 0), 1328 DEFINE_PROP_UINT32("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 timer_del(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 = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL); 1478 if (!usb_auto_timer) { 1479 return; 1480 } 1481 trace_usb_host_auto_scan_enabled(); 1482 } 1483 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 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