1 /* 2 * Linux host USB redirector 3 * 4 * Copyright (c) 2005 Fabrice Bellard 5 * 6 * Copyright (c) 2008 Max Krasnyansky 7 * Support for host device auto connect & disconnect 8 * Major rewrite to support fully async operation 9 * 10 * Copyright 2008 TJ <linux@tjworld.net> 11 * Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition 12 * to the legacy /proc/bus/usb USB device discovery and handling 13 * 14 * (c) 2012 Gerd Hoffmann <kraxel@redhat.com> 15 * Completely rewritten to use libusb instead of usbfs ioctls. 16 * 17 * Permission is hereby granted, free of charge, to any person obtaining a copy 18 * of this software and associated documentation files (the "Software"), to deal 19 * in the Software without restriction, including without limitation the rights 20 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 21 * copies of the Software, and to permit persons to whom the Software is 22 * furnished to do so, subject to the following conditions: 23 * 24 * The above copyright notice and this permission notice shall be included in 25 * all copies or substantial portions of the Software. 26 * 27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 30 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 31 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 32 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 33 * THE SOFTWARE. 34 */ 35 36 #include <poll.h> 37 #include <libusb.h> 38 39 #include "qemu-common.h" 40 #include "monitor/monitor.h" 41 #include "qemu/error-report.h" 42 #include "sysemu/sysemu.h" 43 #include "trace.h" 44 45 #include "hw/usb.h" 46 47 /* ------------------------------------------------------------------------ */ 48 49 #define TYPE_USB_HOST_DEVICE "usb-host" 50 #define USB_HOST_DEVICE(obj) \ 51 OBJECT_CHECK(USBHostDevice, (obj), TYPE_USB_HOST_DEVICE) 52 53 typedef struct USBHostDevice USBHostDevice; 54 typedef struct USBHostRequest USBHostRequest; 55 typedef struct USBHostIsoXfer USBHostIsoXfer; 56 typedef struct USBHostIsoRing USBHostIsoRing; 57 58 struct USBAutoFilter { 59 uint32_t bus_num; 60 uint32_t addr; 61 char *port; 62 uint32_t vendor_id; 63 uint32_t product_id; 64 }; 65 66 enum USBHostDeviceOptions { 67 USB_HOST_OPT_PIPELINE, 68 }; 69 70 struct USBHostDevice { 71 USBDevice parent_obj; 72 73 /* properties */ 74 struct USBAutoFilter match; 75 int32_t bootindex; 76 uint32_t iso_urb_count; 77 uint32_t iso_urb_frames; 78 uint32_t options; 79 uint32_t loglevel; 80 81 /* state */ 82 QTAILQ_ENTRY(USBHostDevice) next; 83 int seen, errcount; 84 int bus_num; 85 int addr; 86 char port[16]; 87 88 libusb_device *dev; 89 libusb_device_handle *dh; 90 struct libusb_device_descriptor ddesc; 91 92 struct { 93 bool detached; 94 bool claimed; 95 } ifs[USB_MAX_INTERFACES]; 96 97 /* callbacks & friends */ 98 QEMUBH *bh_nodev; 99 QEMUBH *bh_postld; 100 Notifier exit; 101 102 /* request queues */ 103 QTAILQ_HEAD(, USBHostRequest) requests; 104 QTAILQ_HEAD(, USBHostIsoRing) isorings; 105 }; 106 107 struct USBHostRequest { 108 USBHostDevice *host; 109 USBPacket *p; 110 bool in; 111 struct libusb_transfer *xfer; 112 unsigned char *buffer; 113 unsigned char *cbuf; 114 unsigned int clen; 115 bool usb3ep0quirk; 116 QTAILQ_ENTRY(USBHostRequest) next; 117 }; 118 119 struct USBHostIsoXfer { 120 USBHostIsoRing *ring; 121 struct libusb_transfer *xfer; 122 bool copy_complete; 123 unsigned int packet; 124 QTAILQ_ENTRY(USBHostIsoXfer) next; 125 }; 126 127 struct USBHostIsoRing { 128 USBHostDevice *host; 129 USBEndpoint *ep; 130 QTAILQ_HEAD(, USBHostIsoXfer) unused; 131 QTAILQ_HEAD(, USBHostIsoXfer) inflight; 132 QTAILQ_HEAD(, USBHostIsoXfer) copy; 133 QTAILQ_ENTRY(USBHostIsoRing) next; 134 }; 135 136 static QTAILQ_HEAD(, USBHostDevice) hostdevs = 137 QTAILQ_HEAD_INITIALIZER(hostdevs); 138 139 static void usb_host_auto_check(void *unused); 140 static void usb_host_release_interfaces(USBHostDevice *s); 141 static void usb_host_nodev(USBHostDevice *s); 142 static void usb_host_detach_kernel(USBHostDevice *s); 143 static void usb_host_attach_kernel(USBHostDevice *s); 144 145 /* ------------------------------------------------------------------------ */ 146 147 #ifndef LIBUSB_LOG_LEVEL_WARNING /* older libusb didn't define these */ 148 #define LIBUSB_LOG_LEVEL_WARNING 2 149 #endif 150 151 /* ------------------------------------------------------------------------ */ 152 153 #define CONTROL_TIMEOUT 10000 /* 10 sec */ 154 #define BULK_TIMEOUT 0 /* unlimited */ 155 #define INTR_TIMEOUT 0 /* unlimited */ 156 157 #if LIBUSBX_API_VERSION >= 0x01000103 158 # define HAVE_STREAMS 1 159 #endif 160 161 static const char *speed_name[] = { 162 [LIBUSB_SPEED_UNKNOWN] = "?", 163 [LIBUSB_SPEED_LOW] = "1.5", 164 [LIBUSB_SPEED_FULL] = "12", 165 [LIBUSB_SPEED_HIGH] = "480", 166 [LIBUSB_SPEED_SUPER] = "5000", 167 }; 168 169 static const unsigned int speed_map[] = { 170 [LIBUSB_SPEED_LOW] = USB_SPEED_LOW, 171 [LIBUSB_SPEED_FULL] = USB_SPEED_FULL, 172 [LIBUSB_SPEED_HIGH] = USB_SPEED_HIGH, 173 [LIBUSB_SPEED_SUPER] = USB_SPEED_SUPER, 174 }; 175 176 static const unsigned int status_map[] = { 177 [LIBUSB_TRANSFER_COMPLETED] = USB_RET_SUCCESS, 178 [LIBUSB_TRANSFER_ERROR] = USB_RET_IOERROR, 179 [LIBUSB_TRANSFER_TIMED_OUT] = USB_RET_IOERROR, 180 [LIBUSB_TRANSFER_CANCELLED] = USB_RET_IOERROR, 181 [LIBUSB_TRANSFER_STALL] = USB_RET_STALL, 182 [LIBUSB_TRANSFER_NO_DEVICE] = USB_RET_NODEV, 183 [LIBUSB_TRANSFER_OVERFLOW] = USB_RET_BABBLE, 184 }; 185 186 static const char *err_names[] = { 187 [-LIBUSB_ERROR_IO] = "IO", 188 [-LIBUSB_ERROR_INVALID_PARAM] = "INVALID_PARAM", 189 [-LIBUSB_ERROR_ACCESS] = "ACCESS", 190 [-LIBUSB_ERROR_NO_DEVICE] = "NO_DEVICE", 191 [-LIBUSB_ERROR_NOT_FOUND] = "NOT_FOUND", 192 [-LIBUSB_ERROR_BUSY] = "BUSY", 193 [-LIBUSB_ERROR_TIMEOUT] = "TIMEOUT", 194 [-LIBUSB_ERROR_OVERFLOW] = "OVERFLOW", 195 [-LIBUSB_ERROR_PIPE] = "PIPE", 196 [-LIBUSB_ERROR_INTERRUPTED] = "INTERRUPTED", 197 [-LIBUSB_ERROR_NO_MEM] = "NO_MEM", 198 [-LIBUSB_ERROR_NOT_SUPPORTED] = "NOT_SUPPORTED", 199 [-LIBUSB_ERROR_OTHER] = "OTHER", 200 }; 201 202 static libusb_context *ctx; 203 static uint32_t loglevel; 204 205 static void usb_host_handle_fd(void *opaque) 206 { 207 struct timeval tv = { 0, 0 }; 208 libusb_handle_events_timeout(ctx, &tv); 209 } 210 211 static void usb_host_add_fd(int fd, short events, void *user_data) 212 { 213 qemu_set_fd_handler(fd, 214 (events & POLLIN) ? usb_host_handle_fd : NULL, 215 (events & POLLOUT) ? usb_host_handle_fd : NULL, 216 ctx); 217 } 218 219 static void usb_host_del_fd(int fd, void *user_data) 220 { 221 qemu_set_fd_handler(fd, NULL, NULL, NULL); 222 } 223 224 static int usb_host_init(void) 225 { 226 const struct libusb_pollfd **poll; 227 int i, rc; 228 229 if (ctx) { 230 return 0; 231 } 232 rc = libusb_init(&ctx); 233 if (rc != 0) { 234 return -1; 235 } 236 libusb_set_debug(ctx, loglevel); 237 238 libusb_set_pollfd_notifiers(ctx, usb_host_add_fd, 239 usb_host_del_fd, 240 ctx); 241 poll = libusb_get_pollfds(ctx); 242 if (poll) { 243 for (i = 0; poll[i] != NULL; i++) { 244 usb_host_add_fd(poll[i]->fd, poll[i]->events, ctx); 245 } 246 } 247 free(poll); 248 return 0; 249 } 250 251 static int usb_host_get_port(libusb_device *dev, char *port, size_t len) 252 { 253 uint8_t path[7]; 254 size_t off; 255 int rc, i; 256 257 #if LIBUSBX_API_VERSION >= 0x01000102 258 rc = libusb_get_port_numbers(dev, path, 7); 259 #else 260 rc = libusb_get_port_path(ctx, dev, path, 7); 261 #endif 262 if (rc < 0) { 263 return 0; 264 } 265 off = snprintf(port, len, "%d", path[0]); 266 for (i = 1; i < rc; i++) { 267 off += snprintf(port+off, len-off, ".%d", path[i]); 268 } 269 return off; 270 } 271 272 static void usb_host_libusb_error(const char *func, int rc) 273 { 274 const char *errname; 275 276 if (rc >= 0) { 277 return; 278 } 279 280 if (-rc < ARRAY_SIZE(err_names) && err_names[-rc]) { 281 errname = err_names[-rc]; 282 } else { 283 errname = "?"; 284 } 285 error_report("%s: %d [%s]", func, rc, errname); 286 } 287 288 /* ------------------------------------------------------------------------ */ 289 290 static bool usb_host_use_combining(USBEndpoint *ep) 291 { 292 int type; 293 294 if (!ep->pipeline) { 295 return false; 296 } 297 if (ep->pid != USB_TOKEN_IN) { 298 return false; 299 } 300 type = usb_ep_get_type(ep->dev, ep->pid, ep->nr); 301 if (type != USB_ENDPOINT_XFER_BULK) { 302 return false; 303 } 304 return true; 305 } 306 307 /* ------------------------------------------------------------------------ */ 308 309 static USBHostRequest *usb_host_req_alloc(USBHostDevice *s, USBPacket *p, 310 bool in, size_t bufsize) 311 { 312 USBHostRequest *r = g_new0(USBHostRequest, 1); 313 314 r->host = s; 315 r->p = p; 316 r->in = in; 317 r->xfer = libusb_alloc_transfer(0); 318 if (bufsize) { 319 r->buffer = g_malloc(bufsize); 320 } 321 QTAILQ_INSERT_TAIL(&s->requests, r, next); 322 return r; 323 } 324 325 static void usb_host_req_free(USBHostRequest *r) 326 { 327 if (r->host) { 328 QTAILQ_REMOVE(&r->host->requests, r, next); 329 } 330 libusb_free_transfer(r->xfer); 331 g_free(r->buffer); 332 g_free(r); 333 } 334 335 static USBHostRequest *usb_host_req_find(USBHostDevice *s, USBPacket *p) 336 { 337 USBHostRequest *r; 338 339 QTAILQ_FOREACH(r, &s->requests, next) { 340 if (r->p == p) { 341 return r; 342 } 343 } 344 return NULL; 345 } 346 347 static void usb_host_req_complete_ctrl(struct libusb_transfer *xfer) 348 { 349 USBHostRequest *r = xfer->user_data; 350 USBHostDevice *s = r->host; 351 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 352 353 if (r->p == NULL) { 354 goto out; /* request was canceled */ 355 } 356 357 r->p->status = status_map[xfer->status]; 358 r->p->actual_length = xfer->actual_length; 359 if (r->in && xfer->actual_length) { 360 memcpy(r->cbuf, r->buffer + 8, xfer->actual_length); 361 362 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices 363 * to work redirected to a not superspeed capable hcd */ 364 if (r->usb3ep0quirk && xfer->actual_length >= 18 && 365 r->cbuf[7] == 9) { 366 r->cbuf[7] = 64; 367 } 368 } 369 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 370 r->p->status, r->p->actual_length); 371 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 372 373 out: 374 usb_host_req_free(r); 375 if (disconnect) { 376 usb_host_nodev(s); 377 } 378 } 379 380 static void usb_host_req_complete_data(struct libusb_transfer *xfer) 381 { 382 USBHostRequest *r = xfer->user_data; 383 USBHostDevice *s = r->host; 384 bool disconnect = (xfer->status == LIBUSB_TRANSFER_NO_DEVICE); 385 386 if (r->p == NULL) { 387 goto out; /* request was canceled */ 388 } 389 390 r->p->status = status_map[xfer->status]; 391 if (r->in && xfer->actual_length) { 392 usb_packet_copy(r->p, r->buffer, xfer->actual_length); 393 } 394 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 395 r->p->status, r->p->actual_length); 396 if (usb_host_use_combining(r->p->ep)) { 397 usb_combined_input_packet_complete(USB_DEVICE(s), r->p); 398 } else { 399 usb_packet_complete(USB_DEVICE(s), r->p); 400 } 401 402 out: 403 usb_host_req_free(r); 404 if (disconnect) { 405 usb_host_nodev(s); 406 } 407 } 408 409 static void usb_host_req_abort(USBHostRequest *r) 410 { 411 USBHostDevice *s = r->host; 412 bool inflight = (r->p && r->p->state == USB_PACKET_ASYNC); 413 414 if (inflight) { 415 r->p->status = USB_RET_NODEV; 416 trace_usb_host_req_complete(s->bus_num, s->addr, r->p, 417 r->p->status, r->p->actual_length); 418 if (r->p->ep->nr == 0) { 419 usb_generic_async_ctrl_complete(USB_DEVICE(s), r->p); 420 } else { 421 usb_packet_complete(USB_DEVICE(s), r->p); 422 } 423 r->p = NULL; 424 } 425 426 QTAILQ_REMOVE(&r->host->requests, r, next); 427 r->host = NULL; 428 429 if (inflight) { 430 libusb_cancel_transfer(r->xfer); 431 } 432 } 433 434 /* ------------------------------------------------------------------------ */ 435 436 static void usb_host_req_complete_iso(struct libusb_transfer *transfer) 437 { 438 USBHostIsoXfer *xfer = transfer->user_data; 439 440 if (!xfer) { 441 /* USBHostIsoXfer released while inflight */ 442 g_free(transfer->buffer); 443 libusb_free_transfer(transfer); 444 return; 445 } 446 447 QTAILQ_REMOVE(&xfer->ring->inflight, xfer, next); 448 if (QTAILQ_EMPTY(&xfer->ring->inflight)) { 449 USBHostDevice *s = xfer->ring->host; 450 trace_usb_host_iso_stop(s->bus_num, s->addr, xfer->ring->ep->nr); 451 } 452 if (xfer->ring->ep->pid == USB_TOKEN_IN) { 453 QTAILQ_INSERT_TAIL(&xfer->ring->copy, xfer, next); 454 } else { 455 QTAILQ_INSERT_TAIL(&xfer->ring->unused, xfer, next); 456 } 457 } 458 459 static USBHostIsoRing *usb_host_iso_alloc(USBHostDevice *s, USBEndpoint *ep) 460 { 461 USBHostIsoRing *ring = g_new0(USBHostIsoRing, 1); 462 USBHostIsoXfer *xfer; 463 /* FIXME: check interval (for now assume one xfer per frame) */ 464 int packets = s->iso_urb_frames; 465 int i; 466 467 ring->host = s; 468 ring->ep = ep; 469 QTAILQ_INIT(&ring->unused); 470 QTAILQ_INIT(&ring->inflight); 471 QTAILQ_INIT(&ring->copy); 472 QTAILQ_INSERT_TAIL(&s->isorings, ring, next); 473 474 for (i = 0; i < s->iso_urb_count; i++) { 475 xfer = g_new0(USBHostIsoXfer, 1); 476 xfer->ring = ring; 477 xfer->xfer = libusb_alloc_transfer(packets); 478 xfer->xfer->dev_handle = s->dh; 479 xfer->xfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; 480 481 xfer->xfer->endpoint = ring->ep->nr; 482 if (ring->ep->pid == USB_TOKEN_IN) { 483 xfer->xfer->endpoint |= USB_DIR_IN; 484 } 485 xfer->xfer->callback = usb_host_req_complete_iso; 486 xfer->xfer->user_data = xfer; 487 488 xfer->xfer->num_iso_packets = packets; 489 xfer->xfer->length = ring->ep->max_packet_size * packets; 490 xfer->xfer->buffer = g_malloc0(xfer->xfer->length); 491 492 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 493 } 494 495 return ring; 496 } 497 498 static USBHostIsoRing *usb_host_iso_find(USBHostDevice *s, USBEndpoint *ep) 499 { 500 USBHostIsoRing *ring; 501 502 QTAILQ_FOREACH(ring, &s->isorings, next) { 503 if (ring->ep == ep) { 504 return ring; 505 } 506 } 507 return NULL; 508 } 509 510 static void usb_host_iso_reset_xfer(USBHostIsoXfer *xfer) 511 { 512 libusb_set_iso_packet_lengths(xfer->xfer, 513 xfer->ring->ep->max_packet_size); 514 xfer->packet = 0; 515 xfer->copy_complete = false; 516 } 517 518 static void usb_host_iso_free_xfer(USBHostIsoXfer *xfer, bool inflight) 519 { 520 if (inflight) { 521 xfer->xfer->user_data = NULL; 522 } else { 523 g_free(xfer->xfer->buffer); 524 libusb_free_transfer(xfer->xfer); 525 } 526 g_free(xfer); 527 } 528 529 static void usb_host_iso_free(USBHostIsoRing *ring) 530 { 531 USBHostIsoXfer *xfer; 532 533 while ((xfer = QTAILQ_FIRST(&ring->inflight)) != NULL) { 534 QTAILQ_REMOVE(&ring->inflight, xfer, next); 535 usb_host_iso_free_xfer(xfer, true); 536 } 537 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 538 QTAILQ_REMOVE(&ring->unused, xfer, next); 539 usb_host_iso_free_xfer(xfer, false); 540 } 541 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL) { 542 QTAILQ_REMOVE(&ring->copy, xfer, next); 543 usb_host_iso_free_xfer(xfer, false); 544 } 545 546 QTAILQ_REMOVE(&ring->host->isorings, ring, next); 547 g_free(ring); 548 } 549 550 static void usb_host_iso_free_all(USBHostDevice *s) 551 { 552 USBHostIsoRing *ring; 553 554 while ((ring = QTAILQ_FIRST(&s->isorings)) != NULL) { 555 usb_host_iso_free(ring); 556 } 557 } 558 559 static bool usb_host_iso_data_copy(USBHostIsoXfer *xfer, USBPacket *p) 560 { 561 unsigned int psize; 562 unsigned char *buf; 563 564 buf = libusb_get_iso_packet_buffer_simple(xfer->xfer, xfer->packet); 565 if (p->pid == USB_TOKEN_OUT) { 566 psize = p->iov.size; 567 if (psize > xfer->ring->ep->max_packet_size) { 568 /* should not happen (guest bug) */ 569 psize = xfer->ring->ep->max_packet_size; 570 } 571 xfer->xfer->iso_packet_desc[xfer->packet].length = psize; 572 } else { 573 psize = xfer->xfer->iso_packet_desc[xfer->packet].actual_length; 574 if (psize > p->iov.size) { 575 /* should not happen (guest bug) */ 576 psize = p->iov.size; 577 } 578 } 579 usb_packet_copy(p, buf, psize); 580 xfer->packet++; 581 xfer->copy_complete = (xfer->packet == xfer->xfer->num_iso_packets); 582 return xfer->copy_complete; 583 } 584 585 static void usb_host_iso_data_in(USBHostDevice *s, USBPacket *p) 586 { 587 USBHostIsoRing *ring; 588 USBHostIsoXfer *xfer; 589 bool disconnect = false; 590 int rc; 591 592 ring = usb_host_iso_find(s, p->ep); 593 if (ring == NULL) { 594 ring = usb_host_iso_alloc(s, p->ep); 595 } 596 597 /* copy data to guest */ 598 xfer = QTAILQ_FIRST(&ring->copy); 599 if (xfer != NULL) { 600 if (usb_host_iso_data_copy(xfer, p)) { 601 QTAILQ_REMOVE(&ring->copy, xfer, next); 602 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 603 } 604 } 605 606 /* submit empty bufs to host */ 607 while ((xfer = QTAILQ_FIRST(&ring->unused)) != NULL) { 608 QTAILQ_REMOVE(&ring->unused, xfer, next); 609 usb_host_iso_reset_xfer(xfer); 610 rc = libusb_submit_transfer(xfer->xfer); 611 if (rc != 0) { 612 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 613 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 614 if (rc == LIBUSB_ERROR_NO_DEVICE) { 615 disconnect = true; 616 } 617 break; 618 } 619 if (QTAILQ_EMPTY(&ring->inflight)) { 620 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 621 } 622 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 623 } 624 625 if (disconnect) { 626 usb_host_nodev(s); 627 } 628 } 629 630 static void usb_host_iso_data_out(USBHostDevice *s, USBPacket *p) 631 { 632 USBHostIsoRing *ring; 633 USBHostIsoXfer *xfer; 634 bool disconnect = false; 635 int rc, filled = 0; 636 637 ring = usb_host_iso_find(s, p->ep); 638 if (ring == NULL) { 639 ring = usb_host_iso_alloc(s, p->ep); 640 } 641 642 /* copy data from guest */ 643 xfer = QTAILQ_FIRST(&ring->copy); 644 while (xfer != NULL && xfer->copy_complete) { 645 filled++; 646 xfer = QTAILQ_NEXT(xfer, next); 647 } 648 if (xfer == NULL) { 649 xfer = QTAILQ_FIRST(&ring->unused); 650 if (xfer == NULL) { 651 trace_usb_host_iso_out_of_bufs(s->bus_num, s->addr, p->ep->nr); 652 return; 653 } 654 QTAILQ_REMOVE(&ring->unused, xfer, next); 655 usb_host_iso_reset_xfer(xfer); 656 QTAILQ_INSERT_TAIL(&ring->copy, xfer, next); 657 } 658 usb_host_iso_data_copy(xfer, p); 659 660 if (QTAILQ_EMPTY(&ring->inflight)) { 661 /* wait until half of our buffers are filled 662 before kicking the iso out stream */ 663 if (filled*2 < s->iso_urb_count) { 664 return; 665 } 666 } 667 668 /* submit filled bufs to host */ 669 while ((xfer = QTAILQ_FIRST(&ring->copy)) != NULL && 670 xfer->copy_complete) { 671 QTAILQ_REMOVE(&ring->copy, xfer, next); 672 rc = libusb_submit_transfer(xfer->xfer); 673 if (rc != 0) { 674 usb_host_libusb_error("libusb_submit_transfer [iso]", rc); 675 QTAILQ_INSERT_TAIL(&ring->unused, xfer, next); 676 if (rc == LIBUSB_ERROR_NO_DEVICE) { 677 disconnect = true; 678 } 679 break; 680 } 681 if (QTAILQ_EMPTY(&ring->inflight)) { 682 trace_usb_host_iso_start(s->bus_num, s->addr, p->ep->nr); 683 } 684 QTAILQ_INSERT_TAIL(&ring->inflight, xfer, next); 685 } 686 687 if (disconnect) { 688 usb_host_nodev(s); 689 } 690 } 691 692 /* ------------------------------------------------------------------------ */ 693 694 static void usb_host_speed_compat(USBHostDevice *s) 695 { 696 USBDevice *udev = USB_DEVICE(s); 697 struct libusb_config_descriptor *conf; 698 const struct libusb_interface_descriptor *intf; 699 const struct libusb_endpoint_descriptor *endp; 700 #ifdef HAVE_STREAMS 701 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp; 702 #endif 703 bool compat_high = true; 704 bool compat_full = true; 705 uint8_t type; 706 int rc, c, i, a, e; 707 708 for (c = 0;; c++) { 709 rc = libusb_get_config_descriptor(s->dev, c, &conf); 710 if (rc != 0) { 711 break; 712 } 713 for (i = 0; i < conf->bNumInterfaces; i++) { 714 for (a = 0; a < conf->interface[i].num_altsetting; a++) { 715 intf = &conf->interface[i].altsetting[a]; 716 for (e = 0; e < intf->bNumEndpoints; e++) { 717 endp = &intf->endpoint[e]; 718 type = endp->bmAttributes & 0x3; 719 switch (type) { 720 case 0x01: /* ISO */ 721 compat_full = false; 722 compat_high = false; 723 break; 724 case 0x02: /* BULK */ 725 #ifdef HAVE_STREAMS 726 rc = libusb_get_ss_endpoint_companion_descriptor 727 (ctx, endp, &endp_ss_comp); 728 if (rc == LIBUSB_SUCCESS) { 729 libusb_free_ss_endpoint_companion_descriptor 730 (endp_ss_comp); 731 compat_full = false; 732 compat_high = false; 733 } 734 #endif 735 break; 736 case 0x03: /* INTERRUPT */ 737 if (endp->wMaxPacketSize > 64) { 738 compat_full = false; 739 } 740 if (endp->wMaxPacketSize > 1024) { 741 compat_high = false; 742 } 743 break; 744 } 745 } 746 } 747 } 748 libusb_free_config_descriptor(conf); 749 } 750 751 udev->speedmask = (1 << udev->speed); 752 if (udev->speed == USB_SPEED_SUPER && compat_high) { 753 udev->speedmask |= USB_SPEED_MASK_HIGH; 754 } 755 if (udev->speed == USB_SPEED_SUPER && compat_full) { 756 udev->speedmask |= USB_SPEED_MASK_FULL; 757 } 758 if (udev->speed == USB_SPEED_HIGH && compat_full) { 759 udev->speedmask |= USB_SPEED_MASK_FULL; 760 } 761 } 762 763 static void usb_host_ep_update(USBHostDevice *s) 764 { 765 static const char *tname[] = { 766 [USB_ENDPOINT_XFER_CONTROL] = "control", 767 [USB_ENDPOINT_XFER_ISOC] = "isoc", 768 [USB_ENDPOINT_XFER_BULK] = "bulk", 769 [USB_ENDPOINT_XFER_INT] = "int", 770 }; 771 USBDevice *udev = USB_DEVICE(s); 772 struct libusb_config_descriptor *conf; 773 const struct libusb_interface_descriptor *intf; 774 const struct libusb_endpoint_descriptor *endp; 775 #ifdef HAVE_STREAMS 776 struct libusb_ss_endpoint_companion_descriptor *endp_ss_comp; 777 #endif 778 uint8_t devep, type; 779 int pid, ep; 780 int rc, i, e; 781 782 usb_ep_reset(udev); 783 rc = libusb_get_active_config_descriptor(s->dev, &conf); 784 if (rc != 0) { 785 return; 786 } 787 trace_usb_host_parse_config(s->bus_num, s->addr, 788 conf->bConfigurationValue, true); 789 790 for (i = 0; i < conf->bNumInterfaces; i++) { 791 assert(udev->altsetting[i] < conf->interface[i].num_altsetting); 792 intf = &conf->interface[i].altsetting[udev->altsetting[i]]; 793 trace_usb_host_parse_interface(s->bus_num, s->addr, 794 intf->bInterfaceNumber, 795 intf->bAlternateSetting, true); 796 for (e = 0; e < intf->bNumEndpoints; e++) { 797 endp = &intf->endpoint[e]; 798 799 devep = endp->bEndpointAddress; 800 pid = (devep & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 801 ep = devep & 0xf; 802 type = endp->bmAttributes & 0x3; 803 804 if (ep == 0) { 805 trace_usb_host_parse_error(s->bus_num, s->addr, 806 "invalid endpoint address"); 807 return; 808 } 809 if (usb_ep_get_type(udev, pid, ep) != USB_ENDPOINT_XFER_INVALID) { 810 trace_usb_host_parse_error(s->bus_num, s->addr, 811 "duplicate endpoint address"); 812 return; 813 } 814 815 trace_usb_host_parse_endpoint(s->bus_num, s->addr, ep, 816 (devep & USB_DIR_IN) ? "in" : "out", 817 tname[type], true); 818 usb_ep_set_max_packet_size(udev, pid, ep, 819 endp->wMaxPacketSize); 820 usb_ep_set_type(udev, pid, ep, type); 821 usb_ep_set_ifnum(udev, pid, ep, i); 822 usb_ep_set_halted(udev, pid, ep, 0); 823 #ifdef HAVE_STREAMS 824 if (type == LIBUSB_TRANSFER_TYPE_BULK && 825 libusb_get_ss_endpoint_companion_descriptor(ctx, endp, 826 &endp_ss_comp) == LIBUSB_SUCCESS) { 827 usb_ep_set_max_streams(udev, pid, ep, 828 endp_ss_comp->bmAttributes); 829 libusb_free_ss_endpoint_companion_descriptor(endp_ss_comp); 830 } 831 #endif 832 } 833 } 834 835 libusb_free_config_descriptor(conf); 836 } 837 838 static int usb_host_open(USBHostDevice *s, libusb_device *dev) 839 { 840 USBDevice *udev = USB_DEVICE(s); 841 int bus_num = libusb_get_bus_number(dev); 842 int addr = libusb_get_device_address(dev); 843 int rc; 844 Error *local_err = NULL; 845 846 trace_usb_host_open_started(bus_num, addr); 847 848 if (s->dh != NULL) { 849 goto fail; 850 } 851 rc = libusb_open(dev, &s->dh); 852 if (rc != 0) { 853 goto fail; 854 } 855 856 s->dev = dev; 857 s->bus_num = bus_num; 858 s->addr = addr; 859 860 usb_host_detach_kernel(s); 861 862 libusb_get_device_descriptor(dev, &s->ddesc); 863 usb_host_get_port(s->dev, s->port, sizeof(s->port)); 864 865 usb_ep_init(udev); 866 usb_host_ep_update(s); 867 868 udev->speed = speed_map[libusb_get_device_speed(dev)]; 869 usb_host_speed_compat(s); 870 871 if (s->ddesc.iProduct) { 872 libusb_get_string_descriptor_ascii(s->dh, s->ddesc.iProduct, 873 (unsigned char *)udev->product_desc, 874 sizeof(udev->product_desc)); 875 } else { 876 snprintf(udev->product_desc, sizeof(udev->product_desc), 877 "host:%d.%d", bus_num, addr); 878 } 879 880 usb_device_attach(udev, &local_err); 881 if (local_err) { 882 error_report_err(local_err); 883 goto fail; 884 } 885 886 trace_usb_host_open_success(bus_num, addr); 887 return 0; 888 889 fail: 890 trace_usb_host_open_failure(bus_num, addr); 891 if (s->dh != NULL) { 892 libusb_close(s->dh); 893 s->dh = NULL; 894 s->dev = NULL; 895 } 896 return -1; 897 } 898 899 static void usb_host_abort_xfers(USBHostDevice *s) 900 { 901 USBHostRequest *r, *rtmp; 902 903 QTAILQ_FOREACH_SAFE(r, &s->requests, next, rtmp) { 904 usb_host_req_abort(r); 905 } 906 } 907 908 static int usb_host_close(USBHostDevice *s) 909 { 910 USBDevice *udev = USB_DEVICE(s); 911 912 if (s->dh == NULL) { 913 return -1; 914 } 915 916 trace_usb_host_close(s->bus_num, s->addr); 917 918 usb_host_abort_xfers(s); 919 usb_host_iso_free_all(s); 920 921 if (udev->attached) { 922 usb_device_detach(udev); 923 } 924 925 usb_host_release_interfaces(s); 926 libusb_reset_device(s->dh); 927 usb_host_attach_kernel(s); 928 libusb_close(s->dh); 929 s->dh = NULL; 930 s->dev = NULL; 931 932 usb_host_auto_check(NULL); 933 return 0; 934 } 935 936 static void usb_host_nodev_bh(void *opaque) 937 { 938 USBHostDevice *s = opaque; 939 usb_host_close(s); 940 } 941 942 static void usb_host_nodev(USBHostDevice *s) 943 { 944 if (!s->bh_nodev) { 945 s->bh_nodev = qemu_bh_new(usb_host_nodev_bh, s); 946 } 947 qemu_bh_schedule(s->bh_nodev); 948 } 949 950 static void usb_host_exit_notifier(struct Notifier *n, void *data) 951 { 952 USBHostDevice *s = container_of(n, USBHostDevice, exit); 953 954 if (s->dh) { 955 usb_host_release_interfaces(s); 956 usb_host_attach_kernel(s); 957 } 958 } 959 960 static void usb_host_realize(USBDevice *udev, Error **errp) 961 { 962 USBHostDevice *s = USB_HOST_DEVICE(udev); 963 964 if (s->match.vendor_id > 0xffff) { 965 error_setg(errp, "vendorid out of range"); 966 return; 967 } 968 if (s->match.product_id > 0xffff) { 969 error_setg(errp, "productid out of range"); 970 return; 971 } 972 if (s->match.addr > 127) { 973 error_setg(errp, "hostaddr out of range"); 974 return; 975 } 976 977 loglevel = s->loglevel; 978 udev->flags |= (1 << USB_DEV_FLAG_IS_HOST); 979 udev->auto_attach = 0; 980 QTAILQ_INIT(&s->requests); 981 QTAILQ_INIT(&s->isorings); 982 983 s->exit.notify = usb_host_exit_notifier; 984 qemu_add_exit_notifier(&s->exit); 985 986 QTAILQ_INSERT_TAIL(&hostdevs, s, next); 987 usb_host_auto_check(NULL); 988 } 989 990 static void usb_host_instance_init(Object *obj) 991 { 992 USBDevice *udev = USB_DEVICE(obj); 993 USBHostDevice *s = USB_HOST_DEVICE(udev); 994 995 device_add_bootindex_property(obj, &s->bootindex, 996 "bootindex", NULL, 997 &udev->qdev, NULL); 998 } 999 1000 static void usb_host_handle_destroy(USBDevice *udev) 1001 { 1002 USBHostDevice *s = USB_HOST_DEVICE(udev); 1003 1004 qemu_remove_exit_notifier(&s->exit); 1005 QTAILQ_REMOVE(&hostdevs, s, next); 1006 usb_host_close(s); 1007 } 1008 1009 static void usb_host_cancel_packet(USBDevice *udev, USBPacket *p) 1010 { 1011 USBHostDevice *s = USB_HOST_DEVICE(udev); 1012 USBHostRequest *r; 1013 1014 if (p->combined) { 1015 usb_combined_packet_cancel(udev, p); 1016 return; 1017 } 1018 1019 trace_usb_host_req_canceled(s->bus_num, s->addr, p); 1020 1021 r = usb_host_req_find(s, p); 1022 if (r && r->p) { 1023 r->p = NULL; /* mark as dead */ 1024 libusb_cancel_transfer(r->xfer); 1025 } 1026 } 1027 1028 static void usb_host_detach_kernel(USBHostDevice *s) 1029 { 1030 struct libusb_config_descriptor *conf; 1031 int rc, i; 1032 1033 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1034 if (rc != 0) { 1035 return; 1036 } 1037 for (i = 0; i < conf->bNumInterfaces; i++) { 1038 rc = libusb_kernel_driver_active(s->dh, i); 1039 usb_host_libusb_error("libusb_kernel_driver_active", rc); 1040 if (rc != 1) { 1041 continue; 1042 } 1043 trace_usb_host_detach_kernel(s->bus_num, s->addr, i); 1044 rc = libusb_detach_kernel_driver(s->dh, i); 1045 usb_host_libusb_error("libusb_detach_kernel_driver", rc); 1046 s->ifs[i].detached = true; 1047 } 1048 libusb_free_config_descriptor(conf); 1049 } 1050 1051 static void usb_host_attach_kernel(USBHostDevice *s) 1052 { 1053 struct libusb_config_descriptor *conf; 1054 int rc, i; 1055 1056 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1057 if (rc != 0) { 1058 return; 1059 } 1060 for (i = 0; i < conf->bNumInterfaces; i++) { 1061 if (!s->ifs[i].detached) { 1062 continue; 1063 } 1064 trace_usb_host_attach_kernel(s->bus_num, s->addr, i); 1065 libusb_attach_kernel_driver(s->dh, i); 1066 s->ifs[i].detached = false; 1067 } 1068 libusb_free_config_descriptor(conf); 1069 } 1070 1071 static int usb_host_claim_interfaces(USBHostDevice *s, int configuration) 1072 { 1073 USBDevice *udev = USB_DEVICE(s); 1074 struct libusb_config_descriptor *conf; 1075 int rc, i; 1076 1077 for (i = 0; i < USB_MAX_INTERFACES; i++) { 1078 udev->altsetting[i] = 0; 1079 } 1080 udev->ninterfaces = 0; 1081 udev->configuration = 0; 1082 1083 usb_host_detach_kernel(s); 1084 1085 rc = libusb_get_active_config_descriptor(s->dev, &conf); 1086 if (rc != 0) { 1087 if (rc == LIBUSB_ERROR_NOT_FOUND) { 1088 /* address state - ignore */ 1089 return USB_RET_SUCCESS; 1090 } 1091 return USB_RET_STALL; 1092 } 1093 1094 for (i = 0; i < conf->bNumInterfaces; i++) { 1095 trace_usb_host_claim_interface(s->bus_num, s->addr, configuration, i); 1096 rc = libusb_claim_interface(s->dh, i); 1097 usb_host_libusb_error("libusb_claim_interface", rc); 1098 if (rc != 0) { 1099 return USB_RET_STALL; 1100 } 1101 s->ifs[i].claimed = true; 1102 } 1103 1104 udev->ninterfaces = conf->bNumInterfaces; 1105 udev->configuration = configuration; 1106 1107 libusb_free_config_descriptor(conf); 1108 return USB_RET_SUCCESS; 1109 } 1110 1111 static void usb_host_release_interfaces(USBHostDevice *s) 1112 { 1113 USBDevice *udev = USB_DEVICE(s); 1114 int i, rc; 1115 1116 for (i = 0; i < udev->ninterfaces; i++) { 1117 if (!s->ifs[i].claimed) { 1118 continue; 1119 } 1120 trace_usb_host_release_interface(s->bus_num, s->addr, i); 1121 rc = libusb_release_interface(s->dh, i); 1122 usb_host_libusb_error("libusb_release_interface", rc); 1123 s->ifs[i].claimed = false; 1124 } 1125 } 1126 1127 static void usb_host_set_address(USBHostDevice *s, int addr) 1128 { 1129 USBDevice *udev = USB_DEVICE(s); 1130 1131 trace_usb_host_set_address(s->bus_num, s->addr, addr); 1132 udev->addr = addr; 1133 } 1134 1135 static void usb_host_set_config(USBHostDevice *s, int config, USBPacket *p) 1136 { 1137 int rc; 1138 1139 trace_usb_host_set_config(s->bus_num, s->addr, config); 1140 1141 usb_host_release_interfaces(s); 1142 rc = libusb_set_configuration(s->dh, config); 1143 if (rc != 0) { 1144 usb_host_libusb_error("libusb_set_configuration", rc); 1145 p->status = USB_RET_STALL; 1146 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1147 usb_host_nodev(s); 1148 } 1149 return; 1150 } 1151 p->status = usb_host_claim_interfaces(s, config); 1152 if (p->status != USB_RET_SUCCESS) { 1153 return; 1154 } 1155 usb_host_ep_update(s); 1156 } 1157 1158 static void usb_host_set_interface(USBHostDevice *s, int iface, int alt, 1159 USBPacket *p) 1160 { 1161 USBDevice *udev = USB_DEVICE(s); 1162 int rc; 1163 1164 trace_usb_host_set_interface(s->bus_num, s->addr, iface, alt); 1165 1166 usb_host_iso_free_all(s); 1167 1168 if (iface >= USB_MAX_INTERFACES) { 1169 p->status = USB_RET_STALL; 1170 return; 1171 } 1172 1173 rc = libusb_set_interface_alt_setting(s->dh, iface, alt); 1174 if (rc != 0) { 1175 usb_host_libusb_error("libusb_set_interface_alt_setting", rc); 1176 p->status = USB_RET_STALL; 1177 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1178 usb_host_nodev(s); 1179 } 1180 return; 1181 } 1182 1183 udev->altsetting[iface] = alt; 1184 usb_host_ep_update(s); 1185 } 1186 1187 static void usb_host_handle_control(USBDevice *udev, USBPacket *p, 1188 int request, int value, int index, 1189 int length, uint8_t *data) 1190 { 1191 USBHostDevice *s = USB_HOST_DEVICE(udev); 1192 USBHostRequest *r; 1193 int rc; 1194 1195 trace_usb_host_req_control(s->bus_num, s->addr, p, request, value, index); 1196 1197 if (s->dh == NULL) { 1198 p->status = USB_RET_NODEV; 1199 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1200 return; 1201 } 1202 1203 switch (request) { 1204 case DeviceOutRequest | USB_REQ_SET_ADDRESS: 1205 usb_host_set_address(s, value); 1206 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1207 return; 1208 1209 case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: 1210 usb_host_set_config(s, value & 0xff, p); 1211 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1212 return; 1213 1214 case InterfaceOutRequest | USB_REQ_SET_INTERFACE: 1215 usb_host_set_interface(s, index, value, p); 1216 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1217 return; 1218 1219 case EndpointOutRequest | USB_REQ_CLEAR_FEATURE: 1220 if (value == 0) { /* clear halt */ 1221 int pid = (index & USB_DIR_IN) ? USB_TOKEN_IN : USB_TOKEN_OUT; 1222 libusb_clear_halt(s->dh, index); 1223 usb_ep_set_halted(udev, pid, index & 0x0f, 0); 1224 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1225 return; 1226 } 1227 } 1228 1229 r = usb_host_req_alloc(s, p, (request >> 8) & USB_DIR_IN, length + 8); 1230 r->cbuf = data; 1231 r->clen = length; 1232 memcpy(r->buffer, udev->setup_buf, 8); 1233 if (!r->in) { 1234 memcpy(r->buffer + 8, r->cbuf, r->clen); 1235 } 1236 1237 /* Fix up USB-3 ep0 maxpacket size to allow superspeed connected devices 1238 * to work redirected to a not superspeed capable hcd */ 1239 if (udev->speed == USB_SPEED_SUPER && 1240 !(udev->port->speedmask & USB_SPEED_MASK_SUPER) && 1241 request == 0x8006 && value == 0x100 && index == 0) { 1242 r->usb3ep0quirk = true; 1243 } 1244 1245 libusb_fill_control_transfer(r->xfer, s->dh, r->buffer, 1246 usb_host_req_complete_ctrl, r, 1247 CONTROL_TIMEOUT); 1248 rc = libusb_submit_transfer(r->xfer); 1249 if (rc != 0) { 1250 p->status = USB_RET_NODEV; 1251 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1252 p->status, p->actual_length); 1253 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1254 usb_host_nodev(s); 1255 } 1256 return; 1257 } 1258 1259 p->status = USB_RET_ASYNC; 1260 } 1261 1262 static void usb_host_handle_data(USBDevice *udev, USBPacket *p) 1263 { 1264 USBHostDevice *s = USB_HOST_DEVICE(udev); 1265 USBHostRequest *r; 1266 size_t size; 1267 int ep, rc; 1268 1269 if (usb_host_use_combining(p->ep) && p->state == USB_PACKET_SETUP) { 1270 p->status = USB_RET_ADD_TO_QUEUE; 1271 return; 1272 } 1273 1274 trace_usb_host_req_data(s->bus_num, s->addr, p, 1275 p->pid == USB_TOKEN_IN, 1276 p->ep->nr, p->iov.size); 1277 1278 if (s->dh == NULL) { 1279 p->status = USB_RET_NODEV; 1280 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1281 return; 1282 } 1283 if (p->ep->halted) { 1284 p->status = USB_RET_STALL; 1285 trace_usb_host_req_emulated(s->bus_num, s->addr, p, p->status); 1286 return; 1287 } 1288 1289 switch (usb_ep_get_type(udev, p->pid, p->ep->nr)) { 1290 case USB_ENDPOINT_XFER_BULK: 1291 size = usb_packet_size(p); 1292 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, size); 1293 if (!r->in) { 1294 usb_packet_copy(p, r->buffer, size); 1295 } 1296 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1297 if (p->stream) { 1298 #ifdef HAVE_STREAMS 1299 libusb_fill_bulk_stream_transfer(r->xfer, s->dh, ep, p->stream, 1300 r->buffer, size, 1301 usb_host_req_complete_data, r, 1302 BULK_TIMEOUT); 1303 #else 1304 usb_host_req_free(r); 1305 p->status = USB_RET_STALL; 1306 return; 1307 #endif 1308 } else { 1309 libusb_fill_bulk_transfer(r->xfer, s->dh, ep, 1310 r->buffer, size, 1311 usb_host_req_complete_data, r, 1312 BULK_TIMEOUT); 1313 } 1314 break; 1315 case USB_ENDPOINT_XFER_INT: 1316 r = usb_host_req_alloc(s, p, p->pid == USB_TOKEN_IN, p->iov.size); 1317 if (!r->in) { 1318 usb_packet_copy(p, r->buffer, p->iov.size); 1319 } 1320 ep = p->ep->nr | (r->in ? USB_DIR_IN : 0); 1321 libusb_fill_interrupt_transfer(r->xfer, s->dh, ep, 1322 r->buffer, p->iov.size, 1323 usb_host_req_complete_data, r, 1324 INTR_TIMEOUT); 1325 break; 1326 case USB_ENDPOINT_XFER_ISOC: 1327 if (p->pid == USB_TOKEN_IN) { 1328 usb_host_iso_data_in(s, p); 1329 } else { 1330 usb_host_iso_data_out(s, p); 1331 } 1332 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1333 p->status, p->actual_length); 1334 return; 1335 default: 1336 p->status = USB_RET_STALL; 1337 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1338 p->status, p->actual_length); 1339 return; 1340 } 1341 1342 rc = libusb_submit_transfer(r->xfer); 1343 if (rc != 0) { 1344 p->status = USB_RET_NODEV; 1345 trace_usb_host_req_complete(s->bus_num, s->addr, p, 1346 p->status, p->actual_length); 1347 if (rc == LIBUSB_ERROR_NO_DEVICE) { 1348 usb_host_nodev(s); 1349 } 1350 return; 1351 } 1352 1353 p->status = USB_RET_ASYNC; 1354 } 1355 1356 static void usb_host_flush_ep_queue(USBDevice *dev, USBEndpoint *ep) 1357 { 1358 if (usb_host_use_combining(ep)) { 1359 usb_ep_combine_input_packets(ep); 1360 } 1361 } 1362 1363 static void usb_host_handle_reset(USBDevice *udev) 1364 { 1365 USBHostDevice *s = USB_HOST_DEVICE(udev); 1366 int rc; 1367 1368 trace_usb_host_reset(s->bus_num, s->addr); 1369 1370 rc = libusb_reset_device(s->dh); 1371 if (rc != 0) { 1372 usb_host_nodev(s); 1373 } 1374 } 1375 1376 static int usb_host_alloc_streams(USBDevice *udev, USBEndpoint **eps, 1377 int nr_eps, int streams) 1378 { 1379 #ifdef HAVE_STREAMS 1380 USBHostDevice *s = USB_HOST_DEVICE(udev); 1381 unsigned char endpoints[30]; 1382 int i, rc; 1383 1384 for (i = 0; i < nr_eps; i++) { 1385 endpoints[i] = eps[i]->nr; 1386 if (eps[i]->pid == USB_TOKEN_IN) { 1387 endpoints[i] |= 0x80; 1388 } 1389 } 1390 rc = libusb_alloc_streams(s->dh, streams, endpoints, nr_eps); 1391 if (rc < 0) { 1392 usb_host_libusb_error("libusb_alloc_streams", rc); 1393 } else if (rc != streams) { 1394 error_report("libusb_alloc_streams: got less streams " 1395 "then requested %d < %d", rc, streams); 1396 } 1397 1398 return (rc == streams) ? 0 : -1; 1399 #else 1400 error_report("libusb_alloc_streams: error not implemented"); 1401 return -1; 1402 #endif 1403 } 1404 1405 static void usb_host_free_streams(USBDevice *udev, USBEndpoint **eps, 1406 int nr_eps) 1407 { 1408 #ifdef HAVE_STREAMS 1409 USBHostDevice *s = USB_HOST_DEVICE(udev); 1410 unsigned char endpoints[30]; 1411 int i; 1412 1413 for (i = 0; i < nr_eps; i++) { 1414 endpoints[i] = eps[i]->nr; 1415 if (eps[i]->pid == USB_TOKEN_IN) { 1416 endpoints[i] |= 0x80; 1417 } 1418 } 1419 libusb_free_streams(s->dh, endpoints, nr_eps); 1420 #endif 1421 } 1422 1423 /* 1424 * This is *NOT* about restoring state. We have absolutely no idea 1425 * what state the host device is in at the moment and whenever it is 1426 * still present in the first place. Attemping to contine where we 1427 * left off is impossible. 1428 * 1429 * What we are going to to to here is emulate a surprise removal of 1430 * the usb device passed through, then kick host scan so the device 1431 * will get re-attached (and re-initialized by the guest) in case it 1432 * is still present. 1433 * 1434 * As the device removal will change the state of other devices (usb 1435 * host controller, most likely interrupt controller too) we have to 1436 * wait with it until *all* vmstate is loaded. Thus post_load just 1437 * kicks a bottom half which then does the actual work. 1438 */ 1439 static void usb_host_post_load_bh(void *opaque) 1440 { 1441 USBHostDevice *dev = opaque; 1442 USBDevice *udev = USB_DEVICE(dev); 1443 1444 if (dev->dh != NULL) { 1445 usb_host_close(dev); 1446 } 1447 if (udev->attached) { 1448 usb_device_detach(udev); 1449 } 1450 usb_host_auto_check(NULL); 1451 } 1452 1453 static int usb_host_post_load(void *opaque, int version_id) 1454 { 1455 USBHostDevice *dev = opaque; 1456 1457 if (!dev->bh_postld) { 1458 dev->bh_postld = qemu_bh_new(usb_host_post_load_bh, dev); 1459 } 1460 qemu_bh_schedule(dev->bh_postld); 1461 return 0; 1462 } 1463 1464 static const VMStateDescription vmstate_usb_host = { 1465 .name = "usb-host", 1466 .version_id = 1, 1467 .minimum_version_id = 1, 1468 .post_load = usb_host_post_load, 1469 .fields = (VMStateField[]) { 1470 VMSTATE_USB_DEVICE(parent_obj, USBHostDevice), 1471 VMSTATE_END_OF_LIST() 1472 } 1473 }; 1474 1475 static Property usb_host_dev_properties[] = { 1476 DEFINE_PROP_UINT32("hostbus", USBHostDevice, match.bus_num, 0), 1477 DEFINE_PROP_UINT32("hostaddr", USBHostDevice, match.addr, 0), 1478 DEFINE_PROP_STRING("hostport", USBHostDevice, match.port), 1479 DEFINE_PROP_UINT32("vendorid", USBHostDevice, match.vendor_id, 0), 1480 DEFINE_PROP_UINT32("productid", USBHostDevice, match.product_id, 0), 1481 DEFINE_PROP_UINT32("isobufs", USBHostDevice, iso_urb_count, 4), 1482 DEFINE_PROP_UINT32("isobsize", USBHostDevice, iso_urb_frames, 32), 1483 DEFINE_PROP_UINT32("loglevel", USBHostDevice, loglevel, 1484 LIBUSB_LOG_LEVEL_WARNING), 1485 DEFINE_PROP_BIT("pipeline", USBHostDevice, options, 1486 USB_HOST_OPT_PIPELINE, true), 1487 DEFINE_PROP_END_OF_LIST(), 1488 }; 1489 1490 static void usb_host_class_initfn(ObjectClass *klass, void *data) 1491 { 1492 DeviceClass *dc = DEVICE_CLASS(klass); 1493 USBDeviceClass *uc = USB_DEVICE_CLASS(klass); 1494 1495 uc->realize = usb_host_realize; 1496 uc->product_desc = "USB Host Device"; 1497 uc->cancel_packet = usb_host_cancel_packet; 1498 uc->handle_data = usb_host_handle_data; 1499 uc->handle_control = usb_host_handle_control; 1500 uc->handle_reset = usb_host_handle_reset; 1501 uc->handle_destroy = usb_host_handle_destroy; 1502 uc->flush_ep_queue = usb_host_flush_ep_queue; 1503 uc->alloc_streams = usb_host_alloc_streams; 1504 uc->free_streams = usb_host_free_streams; 1505 dc->vmsd = &vmstate_usb_host; 1506 dc->props = usb_host_dev_properties; 1507 set_bit(DEVICE_CATEGORY_BRIDGE, dc->categories); 1508 } 1509 1510 static TypeInfo usb_host_dev_info = { 1511 .name = TYPE_USB_HOST_DEVICE, 1512 .parent = TYPE_USB_DEVICE, 1513 .instance_size = sizeof(USBHostDevice), 1514 .class_init = usb_host_class_initfn, 1515 .instance_init = usb_host_instance_init, 1516 }; 1517 1518 static void usb_host_register_types(void) 1519 { 1520 type_register_static(&usb_host_dev_info); 1521 } 1522 1523 type_init(usb_host_register_types) 1524 1525 /* ------------------------------------------------------------------------ */ 1526 1527 static QEMUTimer *usb_auto_timer; 1528 static VMChangeStateEntry *usb_vmstate; 1529 1530 static void usb_host_vm_state(void *unused, int running, RunState state) 1531 { 1532 if (running) { 1533 usb_host_auto_check(unused); 1534 } 1535 } 1536 1537 static void usb_host_auto_check(void *unused) 1538 { 1539 struct USBHostDevice *s; 1540 struct USBAutoFilter *f; 1541 libusb_device **devs = NULL; 1542 struct libusb_device_descriptor ddesc; 1543 int unconnected = 0; 1544 int i, n; 1545 1546 if (usb_host_init() != 0) { 1547 return; 1548 } 1549 1550 if (runstate_is_running()) { 1551 n = libusb_get_device_list(ctx, &devs); 1552 for (i = 0; i < n; i++) { 1553 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1554 continue; 1555 } 1556 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1557 continue; 1558 } 1559 QTAILQ_FOREACH(s, &hostdevs, next) { 1560 f = &s->match; 1561 if (f->bus_num > 0 && 1562 f->bus_num != libusb_get_bus_number(devs[i])) { 1563 continue; 1564 } 1565 if (f->addr > 0 && 1566 f->addr != libusb_get_device_address(devs[i])) { 1567 continue; 1568 } 1569 if (f->port != NULL) { 1570 char port[16] = "-"; 1571 usb_host_get_port(devs[i], port, sizeof(port)); 1572 if (strcmp(f->port, port) != 0) { 1573 continue; 1574 } 1575 } 1576 if (f->vendor_id > 0 && 1577 f->vendor_id != ddesc.idVendor) { 1578 continue; 1579 } 1580 if (f->product_id > 0 && 1581 f->product_id != ddesc.idProduct) { 1582 continue; 1583 } 1584 1585 /* We got a match */ 1586 s->seen++; 1587 if (s->errcount >= 3) { 1588 continue; 1589 } 1590 if (s->dh != NULL) { 1591 continue; 1592 } 1593 if (usb_host_open(s, devs[i]) < 0) { 1594 s->errcount++; 1595 continue; 1596 } 1597 break; 1598 } 1599 } 1600 libusb_free_device_list(devs, 1); 1601 1602 QTAILQ_FOREACH(s, &hostdevs, next) { 1603 if (s->dh == NULL) { 1604 unconnected++; 1605 } 1606 if (s->seen == 0) { 1607 if (s->dh) { 1608 usb_host_close(s); 1609 } 1610 s->errcount = 0; 1611 } 1612 s->seen = 0; 1613 } 1614 1615 #if 0 1616 if (unconnected == 0) { 1617 /* nothing to watch */ 1618 if (usb_auto_timer) { 1619 timer_del(usb_auto_timer); 1620 trace_usb_host_auto_scan_disabled(); 1621 } 1622 return; 1623 } 1624 #endif 1625 } 1626 1627 if (!usb_vmstate) { 1628 usb_vmstate = qemu_add_vm_change_state_handler(usb_host_vm_state, NULL); 1629 } 1630 if (!usb_auto_timer) { 1631 usb_auto_timer = timer_new_ms(QEMU_CLOCK_REALTIME, usb_host_auto_check, NULL); 1632 if (!usb_auto_timer) { 1633 return; 1634 } 1635 trace_usb_host_auto_scan_enabled(); 1636 } 1637 timer_mod(usb_auto_timer, qemu_clock_get_ms(QEMU_CLOCK_REALTIME) + 2000); 1638 } 1639 1640 void hmp_info_usbhost(Monitor *mon, const QDict *qdict) 1641 { 1642 libusb_device **devs = NULL; 1643 struct libusb_device_descriptor ddesc; 1644 char port[16]; 1645 int i, n; 1646 1647 if (usb_host_init() != 0) { 1648 return; 1649 } 1650 1651 n = libusb_get_device_list(ctx, &devs); 1652 for (i = 0; i < n; i++) { 1653 if (libusb_get_device_descriptor(devs[i], &ddesc) != 0) { 1654 continue; 1655 } 1656 if (ddesc.bDeviceClass == LIBUSB_CLASS_HUB) { 1657 continue; 1658 } 1659 usb_host_get_port(devs[i], port, sizeof(port)); 1660 monitor_printf(mon, " Bus %d, Addr %d, Port %s, Speed %s Mb/s\n", 1661 libusb_get_bus_number(devs[i]), 1662 libusb_get_device_address(devs[i]), 1663 port, 1664 speed_name[libusb_get_device_speed(devs[i])]); 1665 monitor_printf(mon, " Class %02x:", ddesc.bDeviceClass); 1666 monitor_printf(mon, " USB device %04x:%04x", 1667 ddesc.idVendor, ddesc.idProduct); 1668 if (ddesc.iProduct) { 1669 libusb_device_handle *handle; 1670 if (libusb_open(devs[i], &handle) == 0) { 1671 unsigned char name[64] = ""; 1672 libusb_get_string_descriptor_ascii(handle, 1673 ddesc.iProduct, 1674 name, sizeof(name)); 1675 libusb_close(handle); 1676 monitor_printf(mon, ", %s", name); 1677 } 1678 } 1679 monitor_printf(mon, "\n"); 1680 } 1681 libusb_free_device_list(devs, 1); 1682 } 1683