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