1 /* $FreeBSD$ */ 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifdef LIBUSB_GLOBAL_INCLUDE_FILE 30 #include LIBUSB_GLOBAL_INCLUDE_FILE 31 #else 32 #include <errno.h> 33 #include <poll.h> 34 #include <pthread.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 #include <string.h> 38 #include <time.h> 39 #include <unistd.h> 40 #include <sys/queue.h> 41 #include <sys/endian.h> 42 #endif 43 44 #define libusb_device_handle libusb20_device 45 46 #include "libusb20.h" 47 #include "libusb20_desc.h" 48 #include "libusb20_int.h" 49 #include "libusb.h" 50 #include "libusb10.h" 51 52 UNEXPORTED void 53 libusb10_add_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd, 54 struct libusb20_device *pdev, int fd, short events) 55 { 56 if (ctx == NULL) 57 return; /* invalid */ 58 59 if (pollfd->entry.tqe_prev != NULL) 60 return; /* already queued */ 61 62 if (fd < 0) 63 return; /* invalid */ 64 65 pollfd->pdev = pdev; 66 pollfd->pollfd.fd = fd; 67 pollfd->pollfd.events = events; 68 69 CTX_LOCK(ctx); 70 TAILQ_INSERT_TAIL(&ctx->pollfds, pollfd, entry); 71 CTX_UNLOCK(ctx); 72 73 if (ctx->fd_added_cb) 74 ctx->fd_added_cb(fd, events, ctx->fd_cb_user_data); 75 } 76 77 UNEXPORTED void 78 libusb10_remove_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd) 79 { 80 if (ctx == NULL) 81 return; /* invalid */ 82 83 if (pollfd->entry.tqe_prev == NULL) 84 return; /* already dequeued */ 85 86 CTX_LOCK(ctx); 87 TAILQ_REMOVE(&ctx->pollfds, pollfd, entry); 88 pollfd->entry.tqe_prev = NULL; 89 CTX_UNLOCK(ctx); 90 91 if (ctx->fd_removed_cb) 92 ctx->fd_removed_cb(pollfd->pollfd.fd, ctx->fd_cb_user_data); 93 } 94 95 /* This function must be called locked */ 96 97 static int 98 libusb10_handle_events_sub(struct libusb_context *ctx, struct timeval *tv) 99 { 100 struct libusb_device *dev; 101 struct libusb20_device **ppdev; 102 struct libusb_super_pollfd *pfd; 103 struct pollfd *fds; 104 struct libusb_super_transfer *sxfer; 105 struct libusb_transfer *uxfer; 106 nfds_t nfds; 107 int timeout; 108 int i; 109 int err; 110 111 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb10_handle_events_sub enter"); 112 113 nfds = 0; 114 i = 0; 115 TAILQ_FOREACH(pfd, &ctx->pollfds, entry) 116 nfds++; 117 118 fds = alloca(sizeof(*fds) * nfds); 119 if (fds == NULL) 120 return (LIBUSB_ERROR_NO_MEM); 121 122 ppdev = alloca(sizeof(*ppdev) * nfds); 123 if (ppdev == NULL) 124 return (LIBUSB_ERROR_NO_MEM); 125 126 TAILQ_FOREACH(pfd, &ctx->pollfds, entry) { 127 fds[i].fd = pfd->pollfd.fd; 128 fds[i].events = pfd->pollfd.events; 129 fds[i].revents = 0; 130 ppdev[i] = pfd->pdev; 131 if (pfd->pdev != NULL) 132 libusb_get_device(pfd->pdev)->refcnt++; 133 i++; 134 } 135 136 if (tv == NULL) 137 timeout = -1; 138 else 139 timeout = (tv->tv_sec * 1000) + ((tv->tv_usec + 999) / 1000); 140 141 CTX_UNLOCK(ctx); 142 err = poll(fds, nfds, timeout); 143 CTX_LOCK(ctx); 144 145 if ((err == -1) && (errno == EINTR)) 146 err = LIBUSB_ERROR_INTERRUPTED; 147 else if (err < 0) 148 err = LIBUSB_ERROR_IO; 149 150 if (err < 1) { 151 for (i = 0; i != (int)nfds; i++) { 152 if (ppdev[i] != NULL) { 153 CTX_UNLOCK(ctx); 154 libusb_unref_device(libusb_get_device(ppdev[i])); 155 CTX_LOCK(ctx); 156 } 157 } 158 goto do_done; 159 } 160 for (i = 0; i != (int)nfds; i++) { 161 if (ppdev[i] != NULL) { 162 dev = libusb_get_device(ppdev[i]); 163 164 if (fds[i].revents != 0) { 165 err = libusb20_dev_process(ppdev[i]); 166 167 if (err) { 168 /* set device is gone */ 169 dev->device_is_gone = 1; 170 171 /* remove USB device from polling loop */ 172 libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); 173 174 /* cancel all pending transfers */ 175 libusb10_cancel_all_transfer_locked(ppdev[i], dev); 176 } 177 } 178 CTX_UNLOCK(ctx); 179 libusb_unref_device(dev); 180 CTX_LOCK(ctx); 181 182 } else { 183 uint8_t dummy; 184 185 while (read(fds[i].fd, &dummy, 1) == 1) 186 ; 187 } 188 } 189 190 err = 0; 191 192 do_done: 193 194 /* Do all done callbacks */ 195 196 while ((sxfer = TAILQ_FIRST(&ctx->tr_done))) { 197 uint8_t flags; 198 199 TAILQ_REMOVE(&ctx->tr_done, sxfer, entry); 200 sxfer->entry.tqe_prev = NULL; 201 202 ctx->tr_done_ref++; 203 204 CTX_UNLOCK(ctx); 205 206 uxfer = (struct libusb_transfer *)( 207 ((uint8_t *)sxfer) + sizeof(*sxfer)); 208 209 /* Allow the callback to free the transfer itself. */ 210 flags = uxfer->flags; 211 212 if (uxfer->callback != NULL) 213 (uxfer->callback) (uxfer); 214 215 /* Check if the USB transfer should be automatically freed. */ 216 if (flags & LIBUSB_TRANSFER_FREE_TRANSFER) 217 libusb_free_transfer(uxfer); 218 219 CTX_LOCK(ctx); 220 221 ctx->tr_done_ref--; 222 ctx->tr_done_gen++; 223 } 224 225 /* Wakeup other waiters */ 226 pthread_cond_broadcast(&ctx->ctx_cond); 227 228 return (err); 229 } 230 231 /* Polling and timing */ 232 233 int 234 libusb_try_lock_events(libusb_context *ctx) 235 { 236 int err; 237 238 ctx = GET_CONTEXT(ctx); 239 if (ctx == NULL) 240 return (1); 241 242 err = CTX_TRYLOCK(ctx); 243 if (err) 244 return (1); 245 246 err = (ctx->ctx_handler != NO_THREAD); 247 if (err) 248 CTX_UNLOCK(ctx); 249 else 250 ctx->ctx_handler = pthread_self(); 251 252 return (err); 253 } 254 255 void 256 libusb_lock_events(libusb_context *ctx) 257 { 258 ctx = GET_CONTEXT(ctx); 259 CTX_LOCK(ctx); 260 if (ctx->ctx_handler == NO_THREAD) 261 ctx->ctx_handler = pthread_self(); 262 } 263 264 void 265 libusb_unlock_events(libusb_context *ctx) 266 { 267 ctx = GET_CONTEXT(ctx); 268 if (ctx->ctx_handler == pthread_self()) { 269 ctx->ctx_handler = NO_THREAD; 270 pthread_cond_broadcast(&ctx->ctx_cond); 271 } 272 CTX_UNLOCK(ctx); 273 } 274 275 int 276 libusb_event_handling_ok(libusb_context *ctx) 277 { 278 ctx = GET_CONTEXT(ctx); 279 return (ctx->ctx_handler == pthread_self()); 280 } 281 282 int 283 libusb_event_handler_active(libusb_context *ctx) 284 { 285 ctx = GET_CONTEXT(ctx); 286 return (ctx->ctx_handler != NO_THREAD); 287 } 288 289 void 290 libusb_lock_event_waiters(libusb_context *ctx) 291 { 292 ctx = GET_CONTEXT(ctx); 293 CTX_LOCK(ctx); 294 } 295 296 void 297 libusb_unlock_event_waiters(libusb_context *ctx) 298 { 299 ctx = GET_CONTEXT(ctx); 300 CTX_UNLOCK(ctx); 301 } 302 303 int 304 libusb_wait_for_event(libusb_context *ctx, struct timeval *tv) 305 { 306 struct timespec ts; 307 int err; 308 309 ctx = GET_CONTEXT(ctx); 310 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_wait_for_event enter"); 311 312 if (tv == NULL) { 313 pthread_cond_wait(&ctx->ctx_cond, 314 &ctx->ctx_lock); 315 return (0); 316 } 317 err = clock_gettime(CLOCK_MONOTONIC, &ts); 318 if (err < 0) 319 return (LIBUSB_ERROR_OTHER); 320 321 /* 322 * The "tv" arguments points to a relative time structure and 323 * not an absolute time structure. 324 */ 325 ts.tv_sec += tv->tv_sec; 326 ts.tv_nsec += tv->tv_usec * 1000; 327 if (ts.tv_nsec >= 1000000000) { 328 ts.tv_nsec -= 1000000000; 329 ts.tv_sec++; 330 } 331 err = pthread_cond_timedwait(&ctx->ctx_cond, 332 &ctx->ctx_lock, &ts); 333 334 if (err == ETIMEDOUT) 335 return (1); 336 337 return (0); 338 } 339 340 int 341 libusb_handle_events_timeout_completed(libusb_context *ctx, 342 struct timeval *tv, int *completed) 343 { 344 int err = 0; 345 346 ctx = GET_CONTEXT(ctx); 347 348 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_handle_events_timeout_completed enter"); 349 350 libusb_lock_events(ctx); 351 352 while (1) { 353 if (completed != NULL) { 354 if (*completed != 0 || err != 0) 355 break; 356 } 357 err = libusb_handle_events_locked(ctx, tv); 358 if (completed == NULL) 359 break; 360 } 361 362 libusb_unlock_events(ctx); 363 364 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_handle_events_timeout_completed exit"); 365 366 return (err); 367 } 368 369 int 370 libusb_handle_events_completed(libusb_context *ctx, int *completed) 371 { 372 return (libusb_handle_events_timeout_completed(ctx, NULL, completed)); 373 } 374 375 int 376 libusb_handle_events_timeout(libusb_context *ctx, struct timeval *tv) 377 { 378 return (libusb_handle_events_timeout_completed(ctx, tv, NULL)); 379 } 380 381 int 382 libusb_handle_events(libusb_context *ctx) 383 { 384 return (libusb_handle_events_timeout_completed(ctx, NULL, NULL)); 385 } 386 387 int 388 libusb_handle_events_locked(libusb_context *ctx, struct timeval *tv) 389 { 390 int err; 391 392 ctx = GET_CONTEXT(ctx); 393 394 if (libusb_event_handling_ok(ctx)) { 395 err = libusb10_handle_events_sub(ctx, tv); 396 } else { 397 err = libusb_wait_for_event(ctx, tv); 398 if (err != 0) 399 err = LIBUSB_ERROR_TIMEOUT; 400 } 401 return (err); 402 } 403 404 int 405 libusb_get_next_timeout(libusb_context *ctx, struct timeval *tv) 406 { 407 /* all timeouts are currently being done by the kernel */ 408 timerclear(tv); 409 return (0); 410 } 411 412 void 413 libusb_set_pollfd_notifiers(libusb_context *ctx, 414 libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb, 415 void *user_data) 416 { 417 ctx = GET_CONTEXT(ctx); 418 419 ctx->fd_added_cb = added_cb; 420 ctx->fd_removed_cb = removed_cb; 421 ctx->fd_cb_user_data = user_data; 422 } 423 424 const struct libusb_pollfd ** 425 libusb_get_pollfds(libusb_context *ctx) 426 { 427 struct libusb_super_pollfd *pollfd; 428 libusb_pollfd **ret; 429 int i; 430 431 ctx = GET_CONTEXT(ctx); 432 433 CTX_LOCK(ctx); 434 435 i = 0; 436 TAILQ_FOREACH(pollfd, &ctx->pollfds, entry) 437 i++; 438 439 ret = calloc(i + 1, sizeof(struct libusb_pollfd *)); 440 if (ret == NULL) 441 goto done; 442 443 i = 0; 444 TAILQ_FOREACH(pollfd, &ctx->pollfds, entry) 445 ret[i++] = &pollfd->pollfd; 446 ret[i] = NULL; 447 448 done: 449 CTX_UNLOCK(ctx); 450 return ((const struct libusb_pollfd **)ret); 451 } 452 453 454 /* Synchronous device I/O */ 455 456 int 457 libusb_control_transfer(libusb_device_handle *devh, 458 uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, 459 uint8_t *data, uint16_t wLength, unsigned int timeout) 460 { 461 struct LIBUSB20_CONTROL_SETUP_DECODED req; 462 int err; 463 uint16_t actlen; 464 465 if (devh == NULL) 466 return (LIBUSB_ERROR_INVALID_PARAM); 467 468 if ((wLength != 0) && (data == NULL)) 469 return (LIBUSB_ERROR_INVALID_PARAM); 470 471 LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &req); 472 473 req.bmRequestType = bmRequestType; 474 req.bRequest = bRequest; 475 req.wValue = wValue; 476 req.wIndex = wIndex; 477 req.wLength = wLength; 478 479 err = libusb20_dev_request_sync(devh, &req, data, 480 &actlen, timeout, 0); 481 482 if (err == LIBUSB20_ERROR_PIPE) 483 return (LIBUSB_ERROR_PIPE); 484 else if (err == LIBUSB20_ERROR_TIMEOUT) 485 return (LIBUSB_ERROR_TIMEOUT); 486 else if (err) 487 return (LIBUSB_ERROR_NO_DEVICE); 488 489 return (actlen); 490 } 491 492 static libusb_context * 493 libusb10_get_context_by_device_handle(libusb_device_handle *devh) 494 { 495 libusb_context *ctx; 496 497 if (devh != NULL) 498 ctx = libusb_get_device(devh)->ctx; 499 else 500 ctx = NULL; 501 502 return (GET_CONTEXT(ctx)); 503 } 504 505 static void 506 libusb10_do_transfer_cb(struct libusb_transfer *transfer) 507 { 508 libusb_context *ctx; 509 int *pdone; 510 511 ctx = libusb10_get_context_by_device_handle(transfer->dev_handle); 512 513 DPRINTF(ctx, LIBUSB_DEBUG_TRANSFER, "sync I/O done"); 514 515 pdone = transfer->user_data; 516 *pdone = 1; 517 } 518 519 /* 520 * TODO: Replace the following function. Allocating and freeing on a 521 * per-transfer basis is slow. --HPS 522 */ 523 static int 524 libusb10_do_transfer(libusb_device_handle *devh, 525 uint8_t endpoint, uint8_t *data, int length, 526 int *transferred, unsigned int timeout, int type) 527 { 528 libusb_context *ctx; 529 struct libusb_transfer *xfer; 530 int done; 531 int ret; 532 533 if (devh == NULL) 534 return (LIBUSB_ERROR_INVALID_PARAM); 535 536 if ((length != 0) && (data == NULL)) 537 return (LIBUSB_ERROR_INVALID_PARAM); 538 539 xfer = libusb_alloc_transfer(0); 540 if (xfer == NULL) 541 return (LIBUSB_ERROR_NO_MEM); 542 543 ctx = libusb_get_device(devh)->ctx; 544 545 xfer->dev_handle = devh; 546 xfer->endpoint = endpoint; 547 xfer->type = type; 548 xfer->timeout = timeout; 549 xfer->buffer = data; 550 xfer->length = length; 551 xfer->user_data = (void *)&done; 552 xfer->callback = libusb10_do_transfer_cb; 553 done = 0; 554 555 if ((ret = libusb_submit_transfer(xfer)) < 0) { 556 libusb_free_transfer(xfer); 557 return (ret); 558 } 559 while (done == 0) { 560 if ((ret = libusb_handle_events(ctx)) < 0) { 561 libusb_cancel_transfer(xfer); 562 usleep(1000); /* nice it */ 563 } 564 } 565 566 *transferred = xfer->actual_length; 567 568 switch (xfer->status) { 569 case LIBUSB_TRANSFER_COMPLETED: 570 ret = 0; 571 break; 572 case LIBUSB_TRANSFER_TIMED_OUT: 573 ret = LIBUSB_ERROR_TIMEOUT; 574 break; 575 case LIBUSB_TRANSFER_OVERFLOW: 576 ret = LIBUSB_ERROR_OVERFLOW; 577 break; 578 case LIBUSB_TRANSFER_STALL: 579 ret = LIBUSB_ERROR_PIPE; 580 break; 581 case LIBUSB_TRANSFER_NO_DEVICE: 582 ret = LIBUSB_ERROR_NO_DEVICE; 583 break; 584 default: 585 ret = LIBUSB_ERROR_OTHER; 586 break; 587 } 588 589 libusb_free_transfer(xfer); 590 return (ret); 591 } 592 593 int 594 libusb_bulk_transfer(libusb_device_handle *devh, 595 uint8_t endpoint, uint8_t *data, int length, 596 int *transferred, unsigned int timeout) 597 { 598 libusb_context *ctx; 599 int ret; 600 601 ctx = libusb10_get_context_by_device_handle(devh); 602 603 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_bulk_transfer enter"); 604 605 ret = libusb10_do_transfer(devh, endpoint, data, length, transferred, 606 timeout, LIBUSB_TRANSFER_TYPE_BULK); 607 608 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_bulk_transfer leave"); 609 return (ret); 610 } 611 612 int 613 libusb_interrupt_transfer(libusb_device_handle *devh, 614 uint8_t endpoint, uint8_t *data, int length, 615 int *transferred, unsigned int timeout) 616 { 617 libusb_context *ctx; 618 int ret; 619 620 ctx = libusb10_get_context_by_device_handle(devh); 621 622 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_interrupt_transfer enter"); 623 624 ret = libusb10_do_transfer(devh, endpoint, data, length, transferred, 625 timeout, LIBUSB_TRANSFER_TYPE_INTERRUPT); 626 627 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_interrupt_transfer leave"); 628 return (ret); 629 } 630 631 uint8_t * 632 libusb_get_iso_packet_buffer(struct libusb_transfer *transfer, uint32_t off) 633 { 634 uint8_t *ptr; 635 uint32_t n; 636 637 if (transfer->num_iso_packets < 0) 638 return (NULL); 639 640 if (off >= (uint32_t)transfer->num_iso_packets) 641 return (NULL); 642 643 ptr = transfer->buffer; 644 if (ptr == NULL) 645 return (NULL); 646 647 for (n = 0; n != off; n++) { 648 ptr += transfer->iso_packet_desc[n].length; 649 } 650 return (ptr); 651 } 652 653 uint8_t * 654 libusb_get_iso_packet_buffer_simple(struct libusb_transfer *transfer, uint32_t off) 655 { 656 uint8_t *ptr; 657 658 if (transfer->num_iso_packets < 0) 659 return (NULL); 660 661 if (off >= (uint32_t)transfer->num_iso_packets) 662 return (NULL); 663 664 ptr = transfer->buffer; 665 if (ptr == NULL) 666 return (NULL); 667 668 ptr += transfer->iso_packet_desc[0].length * off; 669 670 return (ptr); 671 } 672 673 void 674 libusb_set_iso_packet_lengths(struct libusb_transfer *transfer, uint32_t length) 675 { 676 int n; 677 678 if (transfer->num_iso_packets < 0) 679 return; 680 681 for (n = 0; n != transfer->num_iso_packets; n++) 682 transfer->iso_packet_desc[n].length = length; 683 } 684 685 uint8_t * 686 libusb_control_transfer_get_data(struct libusb_transfer *transfer) 687 { 688 if (transfer->buffer == NULL) 689 return (NULL); 690 691 return (transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE); 692 } 693 694 struct libusb_control_setup * 695 libusb_control_transfer_get_setup(struct libusb_transfer *transfer) 696 { 697 return ((struct libusb_control_setup *)transfer->buffer); 698 } 699 700 void 701 libusb_fill_control_setup(uint8_t *buf, uint8_t bmRequestType, 702 uint8_t bRequest, uint16_t wValue, 703 uint16_t wIndex, uint16_t wLength) 704 { 705 struct libusb_control_setup *req = (struct libusb_control_setup *)buf; 706 707 /* The alignment is OK for all fields below. */ 708 req->bmRequestType = bmRequestType; 709 req->bRequest = bRequest; 710 req->wValue = htole16(wValue); 711 req->wIndex = htole16(wIndex); 712 req->wLength = htole16(wLength); 713 } 714 715 void 716 libusb_fill_control_transfer(struct libusb_transfer *transfer, 717 libusb_device_handle *devh, uint8_t *buf, 718 libusb_transfer_cb_fn callback, void *user_data, 719 uint32_t timeout) 720 { 721 struct libusb_control_setup *setup = (struct libusb_control_setup *)buf; 722 723 transfer->dev_handle = devh; 724 transfer->endpoint = 0; 725 transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL; 726 transfer->timeout = timeout; 727 transfer->buffer = buf; 728 if (setup != NULL) 729 transfer->length = LIBUSB_CONTROL_SETUP_SIZE 730 + le16toh(setup->wLength); 731 else 732 transfer->length = 0; 733 transfer->user_data = user_data; 734 transfer->callback = callback; 735 736 } 737 738 void 739 libusb_fill_bulk_transfer(struct libusb_transfer *transfer, 740 libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, 741 int length, libusb_transfer_cb_fn callback, void *user_data, 742 uint32_t timeout) 743 { 744 transfer->dev_handle = devh; 745 transfer->endpoint = endpoint; 746 transfer->type = LIBUSB_TRANSFER_TYPE_BULK; 747 transfer->timeout = timeout; 748 transfer->buffer = buf; 749 transfer->length = length; 750 transfer->user_data = user_data; 751 transfer->callback = callback; 752 } 753 754 void 755 libusb_fill_interrupt_transfer(struct libusb_transfer *transfer, 756 libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, 757 int length, libusb_transfer_cb_fn callback, void *user_data, 758 uint32_t timeout) 759 { 760 transfer->dev_handle = devh; 761 transfer->endpoint = endpoint; 762 transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT; 763 transfer->timeout = timeout; 764 transfer->buffer = buf; 765 transfer->length = length; 766 transfer->user_data = user_data; 767 transfer->callback = callback; 768 } 769 770 void 771 libusb_fill_iso_transfer(struct libusb_transfer *transfer, 772 libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf, 773 int length, int npacket, libusb_transfer_cb_fn callback, 774 void *user_data, uint32_t timeout) 775 { 776 transfer->dev_handle = devh; 777 transfer->endpoint = endpoint; 778 transfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS; 779 transfer->timeout = timeout; 780 transfer->buffer = buf; 781 transfer->length = length; 782 transfer->num_iso_packets = npacket; 783 transfer->user_data = user_data; 784 transfer->callback = callback; 785 } 786 787 int 788 libusb_alloc_streams(libusb_device_handle *dev, uint32_t num_streams, 789 unsigned char *endpoints, int num_endpoints) 790 { 791 if (num_streams > 1) 792 return (LIBUSB_ERROR_INVALID_PARAM); 793 return (0); 794 } 795 796 int 797 libusb_free_streams(libusb_device_handle *dev, unsigned char *endpoints, int num_endpoints) 798 { 799 800 return (0); 801 } 802 803 void 804 libusb_transfer_set_stream_id(struct libusb_transfer *transfer, uint32_t stream_id) 805 { 806 struct libusb_super_transfer *sxfer; 807 808 if (transfer == NULL) 809 return; 810 811 sxfer = (struct libusb_super_transfer *)( 812 ((uint8_t *)transfer) - sizeof(*sxfer)); 813 814 /* set stream ID */ 815 sxfer->stream_id = stream_id; 816 } 817 818 uint32_t 819 libusb_transfer_get_stream_id(struct libusb_transfer *transfer) 820 { 821 struct libusb_super_transfer *sxfer; 822 823 if (transfer == NULL) 824 return (0); 825 826 sxfer = (struct libusb_super_transfer *)( 827 ((uint8_t *)transfer) - sizeof(*sxfer)); 828 829 /* get stream ID */ 830 return (sxfer->stream_id); 831 } 832