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