| 1 | /* $FreeBSD: src/lib/libusb/libusb10.c,v 1.25 2012/06/12 07:28:25 hselasky Exp $ */ |
| 2 | /*- |
| 3 | * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. |
| 4 | * Copyright (c) 2009 Hans Petter Selasky. All rights reserved. |
| 5 | * |
| 6 | * Redistribution and use in source and binary forms, with or without |
| 7 | * modification, are permitted provided that the following conditions |
| 8 | * are met: |
| 9 | * 1. Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * 2. Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
| 14 | * |
| 15 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 | * SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #include <sys/fcntl.h> |
| 29 | #include <sys/ioctl.h> |
| 30 | #include <sys/queue.h> |
| 31 | |
| 32 | #include <assert.h> |
| 33 | #include <errno.h> |
| 34 | #include <poll.h> |
| 35 | #include <pthread.h> |
| 36 | #include <stdio.h> |
| 37 | #include <stdlib.h> |
| 38 | #include <unistd.h> |
| 39 | |
| 40 | #define libusb_device_handle libusb20_device |
| 41 | |
| 42 | #include "libusb20.h" |
| 43 | #include "libusb20_desc.h" |
| 44 | #include "libusb20_int.h" |
| 45 | #include "libusb.h" |
| 46 | #include "libusb10.h" |
| 47 | |
| 48 | static pthread_mutex_t default_context_lock = PTHREAD_MUTEX_INITIALIZER; |
| 49 | struct libusb_context *usbi_default_context = NULL; |
| 50 | |
| 51 | /* Prototypes */ |
| 52 | |
| 53 | static struct libusb20_transfer *libusb10_get_transfer(struct libusb20_device *, uint8_t, uint8_t); |
| 54 | static int libusb10_get_buffsize(struct libusb20_device *, libusb_transfer *); |
| 55 | static int libusb10_convert_error(uint8_t status); |
| 56 | static void libusb10_complete_transfer(struct libusb20_transfer *, struct libusb_super_transfer *, int); |
| 57 | static void libusb10_isoc_proxy(struct libusb20_transfer *); |
| 58 | static void libusb10_bulk_intr_proxy(struct libusb20_transfer *); |
| 59 | static void libusb10_ctrl_proxy(struct libusb20_transfer *); |
| 60 | static void libusb10_submit_transfer_sub(struct libusb20_device *, uint8_t); |
| 61 | |
| 62 | /* Library initialisation / deinitialisation */ |
| 63 | |
| 64 | void |
| 65 | libusb_set_debug(libusb_context *ctx, int level) |
| 66 | { |
| 67 | ctx = GET_CONTEXT(ctx); |
| 68 | if (ctx) |
| 69 | ctx->debug = level; |
| 70 | } |
| 71 | |
| 72 | static void |
| 73 | libusb_set_nonblocking(int f) |
| 74 | { |
| 75 | int flags; |
| 76 | |
| 77 | /* |
| 78 | * We ignore any failures in this function, hence the |
| 79 | * non-blocking flag is not critical to the operation of |
| 80 | * libUSB. We use F_GETFL and F_SETFL to be compatible with |
| 81 | * Linux. |
| 82 | */ |
| 83 | |
| 84 | flags = fcntl(f, F_GETFL, NULL); |
| 85 | if (flags == -1) |
| 86 | return; |
| 87 | flags |= O_NONBLOCK; |
| 88 | fcntl(f, F_SETFL, flags); |
| 89 | } |
| 90 | |
| 91 | int |
| 92 | libusb_init(libusb_context **context) |
| 93 | { |
| 94 | struct libusb_context *ctx; |
| 95 | pthread_condattr_t attr; |
| 96 | char *debug; |
| 97 | int ret; |
| 98 | |
| 99 | ctx = malloc(sizeof(*ctx)); |
| 100 | if (!ctx) |
| 101 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 102 | |
| 103 | memset(ctx, 0, sizeof(*ctx)); |
| 104 | |
| 105 | debug = getenv("LIBUSB_DEBUG"); |
| 106 | if (debug != NULL) { |
| 107 | ctx->debug = atoi(debug); |
| 108 | if (ctx->debug != 0) |
| 109 | ctx->debug_fixed = 1; |
| 110 | } |
| 111 | TAILQ_INIT(&ctx->pollfds); |
| 112 | TAILQ_INIT(&ctx->tr_done); |
| 113 | |
| 114 | if (pthread_mutex_init(&ctx->ctx_lock, NULL) != 0) { |
| 115 | free(ctx); |
| 116 | return (LIBUSB_ERROR_NO_MEM); |
| 117 | } |
| 118 | if (pthread_condattr_init(&attr) != 0) { |
| 119 | pthread_mutex_destroy(&ctx->ctx_lock); |
| 120 | free(ctx); |
| 121 | return (LIBUSB_ERROR_NO_MEM); |
| 122 | } |
| 123 | if (pthread_condattr_setclock(&attr, CLOCK_MONOTONIC) != 0) { |
| 124 | pthread_mutex_destroy(&ctx->ctx_lock); |
| 125 | pthread_condattr_destroy(&attr); |
| 126 | free(ctx); |
| 127 | return (LIBUSB_ERROR_OTHER); |
| 128 | } |
| 129 | if (pthread_cond_init(&ctx->ctx_cond, &attr) != 0) { |
| 130 | pthread_mutex_destroy(&ctx->ctx_lock); |
| 131 | pthread_condattr_destroy(&attr); |
| 132 | free(ctx); |
| 133 | return (LIBUSB_ERROR_NO_MEM); |
| 134 | } |
| 135 | pthread_condattr_destroy(&attr); |
| 136 | |
| 137 | ctx->ctx_handler = NO_THREAD; |
| 138 | |
| 139 | ret = pipe(ctx->ctrl_pipe); |
| 140 | if (ret < 0) { |
| 141 | pthread_mutex_destroy(&ctx->ctx_lock); |
| 142 | pthread_cond_destroy(&ctx->ctx_cond); |
| 143 | free(ctx); |
| 144 | return (LIBUSB_ERROR_OTHER); |
| 145 | } |
| 146 | /* set non-blocking mode on the control pipe to avoid deadlock */ |
| 147 | libusb_set_nonblocking(ctx->ctrl_pipe[0]); |
| 148 | libusb_set_nonblocking(ctx->ctrl_pipe[1]); |
| 149 | |
| 150 | libusb10_add_pollfd(ctx, &ctx->ctx_poll, NULL, ctx->ctrl_pipe[0], POLLIN); |
| 151 | |
| 152 | pthread_mutex_lock(&default_context_lock); |
| 153 | if (usbi_default_context == NULL) { |
| 154 | usbi_default_context = ctx; |
| 155 | } |
| 156 | pthread_mutex_unlock(&default_context_lock); |
| 157 | |
| 158 | if (context) |
| 159 | *context = ctx; |
| 160 | |
| 161 | DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_init complete"); |
| 162 | |
| 163 | return (0); |
| 164 | } |
| 165 | |
| 166 | void |
| 167 | libusb_exit(libusb_context *ctx) |
| 168 | { |
| 169 | ctx = GET_CONTEXT(ctx); |
| 170 | |
| 171 | if (ctx == NULL) |
| 172 | return; |
| 173 | |
| 174 | /* XXX cleanup devices */ |
| 175 | |
| 176 | libusb10_remove_pollfd(ctx, &ctx->ctx_poll); |
| 177 | close(ctx->ctrl_pipe[0]); |
| 178 | close(ctx->ctrl_pipe[1]); |
| 179 | pthread_mutex_destroy(&ctx->ctx_lock); |
| 180 | pthread_cond_destroy(&ctx->ctx_cond); |
| 181 | |
| 182 | pthread_mutex_lock(&default_context_lock); |
| 183 | if (ctx == usbi_default_context) { |
| 184 | usbi_default_context = NULL; |
| 185 | } |
| 186 | pthread_mutex_unlock(&default_context_lock); |
| 187 | |
| 188 | free(ctx); |
| 189 | } |
| 190 | |
| 191 | /* Device handling and initialisation. */ |
| 192 | |
| 193 | ssize_t |
| 194 | libusb_get_device_list(libusb_context *ctx, libusb_device ***list) |
| 195 | { |
| 196 | struct libusb20_backend *usb_backend; |
| 197 | struct libusb20_device *pdev; |
| 198 | struct libusb_device *dev; |
| 199 | int i; |
| 200 | |
| 201 | ctx = GET_CONTEXT(ctx); |
| 202 | |
| 203 | if (ctx == NULL) |
| 204 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 205 | |
| 206 | if (list == NULL) |
| 207 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 208 | |
| 209 | usb_backend = libusb20_be_alloc_default(); |
| 210 | if (usb_backend == NULL) |
| 211 | return (LIBUSB_ERROR_NO_MEM); |
| 212 | |
| 213 | /* figure out how many USB devices are present */ |
| 214 | pdev = NULL; |
| 215 | i = 0; |
| 216 | while ((pdev = libusb20_be_device_foreach(usb_backend, pdev))) |
| 217 | i++; |
| 218 | |
| 219 | /* allocate device pointer list */ |
| 220 | *list = malloc((i + 1) * sizeof(void *)); |
| 221 | if (*list == NULL) { |
| 222 | libusb20_be_free(usb_backend); |
| 223 | return (LIBUSB_ERROR_NO_MEM); |
| 224 | } |
| 225 | /* create libusb v1.0 compliant devices */ |
| 226 | i = 0; |
| 227 | while ((pdev = libusb20_be_device_foreach(usb_backend, NULL))) { |
| 228 | |
| 229 | dev = malloc(sizeof(*dev)); |
| 230 | if (dev == NULL) { |
| 231 | while (i != 0) { |
| 232 | libusb_unref_device((*list)[i - 1]); |
| 233 | i--; |
| 234 | } |
| 235 | free(*list); |
| 236 | *list = NULL; |
| 237 | libusb20_be_free(usb_backend); |
| 238 | return (LIBUSB_ERROR_NO_MEM); |
| 239 | } |
| 240 | /* get device into libUSB v1.0 list */ |
| 241 | libusb20_be_dequeue_device(usb_backend, pdev); |
| 242 | |
| 243 | memset(dev, 0, sizeof(*dev)); |
| 244 | |
| 245 | /* init transfer queues */ |
| 246 | TAILQ_INIT(&dev->tr_head); |
| 247 | |
| 248 | /* set context we belong to */ |
| 249 | dev->ctx = ctx; |
| 250 | |
| 251 | /* link together the two structures */ |
| 252 | dev->os_priv = pdev; |
| 253 | pdev->privLuData = dev; |
| 254 | |
| 255 | (*list)[i] = libusb_ref_device(dev); |
| 256 | i++; |
| 257 | } |
| 258 | (*list)[i] = NULL; |
| 259 | |
| 260 | libusb20_be_free(usb_backend); |
| 261 | return (i); |
| 262 | } |
| 263 | |
| 264 | void |
| 265 | libusb_free_device_list(libusb_device **list, int unref_devices) |
| 266 | { |
| 267 | int i; |
| 268 | |
| 269 | if (list == NULL) |
| 270 | return; /* be NULL safe */ |
| 271 | |
| 272 | if (unref_devices) { |
| 273 | for (i = 0; list[i] != NULL; i++) |
| 274 | libusb_unref_device(list[i]); |
| 275 | } |
| 276 | free(list); |
| 277 | } |
| 278 | |
| 279 | uint8_t |
| 280 | libusb_get_bus_number(libusb_device *dev) |
| 281 | { |
| 282 | if (dev == NULL) |
| 283 | return (0); /* should not happen */ |
| 284 | return (libusb20_dev_get_bus_number(dev->os_priv)); |
| 285 | } |
| 286 | |
| 287 | uint8_t |
| 288 | libusb_get_device_address(libusb_device *dev) |
| 289 | { |
| 290 | if (dev == NULL) |
| 291 | return (0); /* should not happen */ |
| 292 | return (libusb20_dev_get_address(dev->os_priv)); |
| 293 | } |
| 294 | |
| 295 | enum libusb_speed |
| 296 | libusb_get_device_speed(libusb_device *dev) |
| 297 | { |
| 298 | if (dev == NULL) |
| 299 | return (LIBUSB_SPEED_UNKNOWN); /* should not happen */ |
| 300 | |
| 301 | switch (libusb20_dev_get_speed(dev->os_priv)) { |
| 302 | case LIBUSB20_SPEED_LOW: |
| 303 | return (LIBUSB_SPEED_LOW); |
| 304 | case LIBUSB20_SPEED_FULL: |
| 305 | return (LIBUSB_SPEED_FULL); |
| 306 | case LIBUSB20_SPEED_HIGH: |
| 307 | return (LIBUSB_SPEED_HIGH); |
| 308 | case LIBUSB20_SPEED_SUPER: |
| 309 | return (LIBUSB_SPEED_SUPER); |
| 310 | default: |
| 311 | break; |
| 312 | } |
| 313 | return (LIBUSB_SPEED_UNKNOWN); |
| 314 | } |
| 315 | |
| 316 | int |
| 317 | libusb_get_max_packet_size(libusb_device *dev, uint8_t endpoint) |
| 318 | { |
| 319 | struct libusb_config_descriptor *pdconf; |
| 320 | struct libusb_interface *pinf; |
| 321 | struct libusb_interface_descriptor *pdinf; |
| 322 | struct libusb_endpoint_descriptor *pdend; |
| 323 | int i; |
| 324 | int j; |
| 325 | int k; |
| 326 | int ret; |
| 327 | |
| 328 | if (dev == NULL) |
| 329 | return (LIBUSB_ERROR_NO_DEVICE); |
| 330 | |
| 331 | ret = libusb_get_active_config_descriptor(dev, &pdconf); |
| 332 | if (ret < 0) |
| 333 | return (ret); |
| 334 | |
| 335 | ret = LIBUSB_ERROR_NOT_FOUND; |
| 336 | for (i = 0; i < pdconf->bNumInterfaces; i++) { |
| 337 | pinf = &pdconf->interface[i]; |
| 338 | for (j = 0; j < pinf->num_altsetting; j++) { |
| 339 | pdinf = &pinf->altsetting[j]; |
| 340 | for (k = 0; k < pdinf->bNumEndpoints; k++) { |
| 341 | pdend = &pdinf->endpoint[k]; |
| 342 | if (pdend->bEndpointAddress == endpoint) { |
| 343 | ret = pdend->wMaxPacketSize; |
| 344 | goto out; |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | out: |
| 351 | libusb_free_config_descriptor(pdconf); |
| 352 | return (ret); |
| 353 | } |
| 354 | |
| 355 | int |
| 356 | libusb_get_max_iso_packet_size(libusb_device *dev, uint8_t endpoint) |
| 357 | { |
| 358 | int multiplier; |
| 359 | int ret; |
| 360 | |
| 361 | ret = libusb_get_max_packet_size(dev, endpoint); |
| 362 | |
| 363 | switch (libusb20_dev_get_speed(dev->os_priv)) { |
| 364 | case LIBUSB20_SPEED_LOW: |
| 365 | case LIBUSB20_SPEED_FULL: |
| 366 | break; |
| 367 | default: |
| 368 | if (ret > -1) { |
| 369 | multiplier = (1 + ((ret >> 11) & 3)); |
| 370 | if (multiplier > 3) |
| 371 | multiplier = 3; |
| 372 | ret = (ret & 0x7FF) * multiplier; |
| 373 | } |
| 374 | break; |
| 375 | } |
| 376 | return (ret); |
| 377 | } |
| 378 | |
| 379 | libusb_device * |
| 380 | libusb_ref_device(libusb_device *dev) |
| 381 | { |
| 382 | if (dev == NULL) |
| 383 | return (NULL); /* be NULL safe */ |
| 384 | |
| 385 | CTX_LOCK(dev->ctx); |
| 386 | dev->refcnt++; |
| 387 | CTX_UNLOCK(dev->ctx); |
| 388 | |
| 389 | return (dev); |
| 390 | } |
| 391 | |
| 392 | void |
| 393 | libusb_unref_device(libusb_device *dev) |
| 394 | { |
| 395 | if (dev == NULL) |
| 396 | return; /* be NULL safe */ |
| 397 | |
| 398 | CTX_LOCK(dev->ctx); |
| 399 | dev->refcnt--; |
| 400 | CTX_UNLOCK(dev->ctx); |
| 401 | |
| 402 | if (dev->refcnt == 0) { |
| 403 | libusb20_dev_free(dev->os_priv); |
| 404 | free(dev); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | int |
| 409 | libusb_open(libusb_device *dev, libusb_device_handle **devh) |
| 410 | { |
| 411 | libusb_context *ctx = dev->ctx; |
| 412 | struct libusb20_device *pdev = dev->os_priv; |
| 413 | uint8_t dummy; |
| 414 | int err; |
| 415 | |
| 416 | if (devh == NULL) |
| 417 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 418 | |
| 419 | /* set default device handle value */ |
| 420 | *devh = NULL; |
| 421 | |
| 422 | dev = libusb_ref_device(dev); |
| 423 | if (dev == NULL) |
| 424 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 425 | |
| 426 | err = libusb20_dev_open(pdev, 16 * 4 /* number of endpoints */ ); |
| 427 | if (err) { |
| 428 | libusb_unref_device(dev); |
| 429 | return (LIBUSB_ERROR_NO_MEM); |
| 430 | } |
| 431 | libusb10_add_pollfd(ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | |
| 432 | POLLOUT | POLLRDNORM | POLLWRNORM); |
| 433 | |
| 434 | /* make sure our event loop detects the new device */ |
| 435 | dummy = 0; |
| 436 | err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); |
| 437 | if (err < (int)sizeof(dummy)) { |
| 438 | /* ignore error, if any */ |
| 439 | DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open write failed!"); |
| 440 | } |
| 441 | *devh = pdev; |
| 442 | |
| 443 | return (0); |
| 444 | } |
| 445 | |
| 446 | libusb_device_handle * |
| 447 | libusb_open_device_with_vid_pid(libusb_context *ctx, uint16_t vendor_id, |
| 448 | uint16_t product_id) |
| 449 | { |
| 450 | struct libusb_device **devs; |
| 451 | struct libusb20_device *pdev; |
| 452 | struct LIBUSB20_DEVICE_DESC_DECODED *pdesc; |
| 453 | int i; |
| 454 | int j; |
| 455 | |
| 456 | ctx = GET_CONTEXT(ctx); |
| 457 | if (ctx == NULL) |
| 458 | return (NULL); /* be NULL safe */ |
| 459 | |
| 460 | DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid enter"); |
| 461 | |
| 462 | if ((i = libusb_get_device_list(ctx, &devs)) < 0) |
| 463 | return (NULL); |
| 464 | |
| 465 | pdev = NULL; |
| 466 | for (j = 0; j < i; j++) { |
| 467 | struct libusb20_device *tdev; |
| 468 | |
| 469 | tdev = devs[j]->os_priv; |
| 470 | pdesc = libusb20_dev_get_device_desc(tdev); |
| 471 | /* |
| 472 | * NOTE: The USB library will automatically swap the |
| 473 | * fields in the device descriptor to be of host |
| 474 | * endian type! |
| 475 | */ |
| 476 | if (pdesc->idVendor == vendor_id && |
| 477 | pdesc->idProduct == product_id) { |
| 478 | libusb_open(devs[j], &pdev); |
| 479 | break; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | libusb_free_device_list(devs, 1); |
| 484 | DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid leave"); |
| 485 | return (pdev); |
| 486 | } |
| 487 | |
| 488 | void |
| 489 | libusb_close(struct libusb20_device *pdev) |
| 490 | { |
| 491 | libusb_context *ctx; |
| 492 | struct libusb_device *dev; |
| 493 | uint8_t dummy; |
| 494 | int err; |
| 495 | |
| 496 | if (pdev == NULL) |
| 497 | return; /* be NULL safe */ |
| 498 | |
| 499 | dev = libusb_get_device(pdev); |
| 500 | ctx = dev->ctx; |
| 501 | |
| 502 | libusb10_remove_pollfd(ctx, &dev->dev_poll); |
| 503 | |
| 504 | libusb20_dev_close(pdev); |
| 505 | |
| 506 | /* unref will free the "pdev" when the refcount reaches zero */ |
| 507 | libusb_unref_device(dev); |
| 508 | |
| 509 | /* make sure our event loop detects the closed device */ |
| 510 | dummy = 0; |
| 511 | err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); |
| 512 | if (err < (int)sizeof(dummy)) { |
| 513 | /* ignore error, if any */ |
| 514 | DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_close write failed!"); |
| 515 | } |
| 516 | } |
| 517 | |
| 518 | libusb_device * |
| 519 | libusb_get_device(struct libusb20_device *pdev) |
| 520 | { |
| 521 | if (pdev == NULL) |
| 522 | return (NULL); |
| 523 | return ((libusb_device *)pdev->privLuData); |
| 524 | } |
| 525 | |
| 526 | int |
| 527 | libusb_get_configuration(struct libusb20_device *pdev, int *config) |
| 528 | { |
| 529 | struct libusb20_config *pconf; |
| 530 | |
| 531 | if (pdev == NULL || config == NULL) |
| 532 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 533 | |
| 534 | pconf = libusb20_dev_alloc_config(pdev, libusb20_dev_get_config_index(pdev)); |
| 535 | if (pconf == NULL) |
| 536 | return (LIBUSB_ERROR_NO_MEM); |
| 537 | |
| 538 | *config = pconf->desc.bConfigurationValue; |
| 539 | |
| 540 | free(pconf); |
| 541 | |
| 542 | return (0); |
| 543 | } |
| 544 | |
| 545 | int |
| 546 | libusb_set_configuration(struct libusb20_device *pdev, int configuration) |
| 547 | { |
| 548 | struct libusb20_config *pconf; |
| 549 | struct libusb_device *dev; |
| 550 | int err; |
| 551 | uint8_t i; |
| 552 | |
| 553 | dev = libusb_get_device(pdev); |
| 554 | if (dev == NULL) |
| 555 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 556 | |
| 557 | if (configuration < 1) { |
| 558 | /* unconfigure */ |
| 559 | i = 255; |
| 560 | } else { |
| 561 | for (i = 0; i != 255; i++) { |
| 562 | uint8_t found; |
| 563 | |
| 564 | pconf = libusb20_dev_alloc_config(pdev, i); |
| 565 | if (pconf == NULL) |
| 566 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 567 | found = (pconf->desc.bConfigurationValue |
| 568 | == configuration); |
| 569 | free(pconf); |
| 570 | |
| 571 | if (found) |
| 572 | goto set_config; |
| 573 | } |
| 574 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 575 | } |
| 576 | |
| 577 | set_config: |
| 578 | |
| 579 | libusb10_cancel_all_transfer(dev); |
| 580 | |
| 581 | libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); |
| 582 | |
| 583 | err = libusb20_dev_set_config_index(pdev, i); |
| 584 | |
| 585 | libusb10_add_pollfd(dev->ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN | |
| 586 | POLLOUT | POLLRDNORM | POLLWRNORM); |
| 587 | |
| 588 | return (err ? LIBUSB_ERROR_INVALID_PARAM : 0); |
| 589 | } |
| 590 | |
| 591 | int |
| 592 | libusb_claim_interface(struct libusb20_device *pdev, int interface_number) |
| 593 | { |
| 594 | libusb_device *dev; |
| 595 | int err = 0; |
| 596 | |
| 597 | dev = libusb_get_device(pdev); |
| 598 | if (dev == NULL) |
| 599 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 600 | |
| 601 | if (interface_number < 0 || interface_number > 31) |
| 602 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 603 | |
| 604 | CTX_LOCK(dev->ctx); |
| 605 | if (dev->claimed_interfaces & (1 << interface_number)) |
| 606 | err = LIBUSB_ERROR_BUSY; |
| 607 | |
| 608 | if (!err) |
| 609 | dev->claimed_interfaces |= (1 << interface_number); |
| 610 | CTX_UNLOCK(dev->ctx); |
| 611 | return (err); |
| 612 | } |
| 613 | |
| 614 | int |
| 615 | libusb_release_interface(struct libusb20_device *pdev, int interface_number) |
| 616 | { |
| 617 | libusb_device *dev; |
| 618 | int err = 0; |
| 619 | |
| 620 | dev = libusb_get_device(pdev); |
| 621 | if (dev == NULL) |
| 622 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 623 | |
| 624 | if (interface_number < 0 || interface_number > 31) |
| 625 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 626 | |
| 627 | CTX_LOCK(dev->ctx); |
| 628 | if (!(dev->claimed_interfaces & (1 << interface_number))) |
| 629 | err = LIBUSB_ERROR_NOT_FOUND; |
| 630 | |
| 631 | if (!err) |
| 632 | dev->claimed_interfaces &= ~(1 << interface_number); |
| 633 | CTX_UNLOCK(dev->ctx); |
| 634 | return (err); |
| 635 | } |
| 636 | |
| 637 | int |
| 638 | libusb_set_interface_alt_setting(struct libusb20_device *pdev, |
| 639 | int interface_number, int alternate_setting) |
| 640 | { |
| 641 | libusb_device *dev; |
| 642 | int err = 0; |
| 643 | |
| 644 | dev = libusb_get_device(pdev); |
| 645 | if (dev == NULL) |
| 646 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 647 | |
| 648 | if (interface_number < 0 || interface_number > 31) |
| 649 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 650 | |
| 651 | CTX_LOCK(dev->ctx); |
| 652 | if (!(dev->claimed_interfaces & (1 << interface_number))) |
| 653 | err = LIBUSB_ERROR_NOT_FOUND; |
| 654 | CTX_UNLOCK(dev->ctx); |
| 655 | |
| 656 | if (err) |
| 657 | return (err); |
| 658 | |
| 659 | libusb10_cancel_all_transfer(dev); |
| 660 | |
| 661 | libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); |
| 662 | |
| 663 | err = libusb20_dev_set_alt_index(pdev, |
| 664 | interface_number, alternate_setting); |
| 665 | |
| 666 | libusb10_add_pollfd(dev->ctx, &dev->dev_poll, |
| 667 | pdev, libusb20_dev_get_fd(pdev), |
| 668 | POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); |
| 669 | |
| 670 | return (err ? LIBUSB_ERROR_OTHER : 0); |
| 671 | } |
| 672 | |
| 673 | static struct libusb20_transfer * |
| 674 | libusb10_get_transfer(struct libusb20_device *pdev, |
| 675 | uint8_t endpoint, uint8_t xfer_index) |
| 676 | { |
| 677 | xfer_index &= 1; /* double buffering */ |
| 678 | |
| 679 | xfer_index |= (endpoint & LIBUSB20_ENDPOINT_ADDRESS_MASK) * 4; |
| 680 | |
| 681 | if (endpoint & LIBUSB20_ENDPOINT_DIR_MASK) { |
| 682 | /* this is an IN endpoint */ |
| 683 | xfer_index |= 2; |
| 684 | } |
| 685 | return (libusb20_tr_get_pointer(pdev, xfer_index)); |
| 686 | } |
| 687 | |
| 688 | int |
| 689 | libusb_clear_halt(struct libusb20_device *pdev, uint8_t endpoint) |
| 690 | { |
| 691 | struct libusb20_transfer *xfer; |
| 692 | struct libusb_device *dev; |
| 693 | int err; |
| 694 | |
| 695 | xfer = libusb10_get_transfer(pdev, endpoint, 0); |
| 696 | if (xfer == NULL) |
| 697 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 698 | |
| 699 | dev = libusb_get_device(pdev); |
| 700 | if (dev == NULL) |
| 701 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 702 | |
| 703 | CTX_LOCK(dev->ctx); |
| 704 | err = libusb20_tr_open(xfer, 0, 1, endpoint); |
| 705 | CTX_UNLOCK(dev->ctx); |
| 706 | |
| 707 | if (err != 0 && err != LIBUSB20_ERROR_BUSY) |
| 708 | return (LIBUSB_ERROR_OTHER); |
| 709 | |
| 710 | libusb20_tr_clear_stall_sync(xfer); |
| 711 | |
| 712 | /* check if we opened the transfer */ |
| 713 | if (err == 0) { |
| 714 | CTX_LOCK(dev->ctx); |
| 715 | libusb20_tr_close(xfer); |
| 716 | CTX_UNLOCK(dev->ctx); |
| 717 | } |
| 718 | return (0); /* success */ |
| 719 | } |
| 720 | |
| 721 | int |
| 722 | libusb_reset_device(struct libusb20_device *pdev) |
| 723 | { |
| 724 | libusb_device *dev; |
| 725 | int err; |
| 726 | |
| 727 | dev = libusb_get_device(pdev); |
| 728 | if (dev == NULL) |
| 729 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 730 | |
| 731 | libusb10_cancel_all_transfer(dev); |
| 732 | |
| 733 | libusb10_remove_pollfd(dev->ctx, &dev->dev_poll); |
| 734 | |
| 735 | err = libusb20_dev_reset(pdev); |
| 736 | |
| 737 | libusb10_add_pollfd(dev->ctx, &dev->dev_poll, |
| 738 | pdev, libusb20_dev_get_fd(pdev), |
| 739 | POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM); |
| 740 | |
| 741 | return (err ? LIBUSB_ERROR_OTHER : 0); |
| 742 | } |
| 743 | |
| 744 | int |
| 745 | libusb_check_connected(struct libusb20_device *pdev) |
| 746 | { |
| 747 | libusb_device *dev; |
| 748 | int err; |
| 749 | |
| 750 | dev = libusb_get_device(pdev); |
| 751 | if (dev == NULL) |
| 752 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 753 | |
| 754 | err = libusb20_dev_check_connected(pdev); |
| 755 | |
| 756 | return (err ? LIBUSB_ERROR_NO_DEVICE : 0); |
| 757 | } |
| 758 | |
| 759 | int |
| 760 | libusb_kernel_driver_active(struct libusb20_device *pdev, int interface) |
| 761 | { |
| 762 | if (pdev == NULL) |
| 763 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 764 | |
| 765 | if (libusb20_dev_kernel_driver_active(pdev, interface)) |
| 766 | return (0); /* no kernel driver is active */ |
| 767 | else |
| 768 | return (1); /* kernel driver is active */ |
| 769 | } |
| 770 | |
| 771 | int |
| 772 | libusb_get_driver_np(struct libusb20_device *pdev, int interface, |
| 773 | char *name, int namelen) |
| 774 | { |
| 775 | return (libusb_get_driver(pdev, interface, name, namelen)); |
| 776 | } |
| 777 | |
| 778 | int |
| 779 | libusb_get_driver(struct libusb20_device *pdev, int interface, |
| 780 | char *name, int namelen) |
| 781 | { |
| 782 | char *ptr; |
| 783 | int err; |
| 784 | |
| 785 | if (pdev == NULL) |
| 786 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 787 | if (namelen < 1) |
| 788 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 789 | if (namelen > 255) |
| 790 | namelen = 255; |
| 791 | |
| 792 | err = libusb20_dev_get_iface_desc( |
| 793 | pdev, interface, name, namelen); |
| 794 | |
| 795 | if (err != 0) |
| 796 | return (LIBUSB_ERROR_OTHER); |
| 797 | |
| 798 | /* we only want the driver name */ |
| 799 | ptr = strstr(name, ":"); |
| 800 | if (ptr != NULL) |
| 801 | *ptr = 0; |
| 802 | |
| 803 | return (0); |
| 804 | } |
| 805 | |
| 806 | int |
| 807 | libusb_detach_kernel_driver_np(struct libusb20_device *pdev, int interface) |
| 808 | { |
| 809 | return (libusb_detach_kernel_driver(pdev, interface)); |
| 810 | } |
| 811 | |
| 812 | int |
| 813 | libusb_detach_kernel_driver(struct libusb20_device *pdev, int interface) |
| 814 | { |
| 815 | int err; |
| 816 | |
| 817 | if (pdev == NULL) |
| 818 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 819 | |
| 820 | err = libusb20_dev_detach_kernel_driver( |
| 821 | pdev, interface); |
| 822 | |
| 823 | return (err ? LIBUSB_ERROR_OTHER : 0); |
| 824 | } |
| 825 | |
| 826 | int |
| 827 | libusb_attach_kernel_driver(struct libusb20_device *pdev, int interface) |
| 828 | { |
| 829 | if (pdev == NULL) |
| 830 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 831 | /* stub - currently not supported by libusb20 */ |
| 832 | return (0); |
| 833 | } |
| 834 | |
| 835 | /* Asynchronous device I/O */ |
| 836 | |
| 837 | struct libusb_transfer * |
| 838 | libusb_alloc_transfer(int iso_packets) |
| 839 | { |
| 840 | struct libusb_transfer *uxfer; |
| 841 | struct libusb_super_transfer *sxfer; |
| 842 | int len; |
| 843 | |
| 844 | len = sizeof(struct libusb_transfer) + |
| 845 | sizeof(struct libusb_super_transfer) + |
| 846 | (iso_packets * sizeof(libusb_iso_packet_descriptor)); |
| 847 | |
| 848 | sxfer = malloc(len); |
| 849 | if (sxfer == NULL) |
| 850 | return (NULL); |
| 851 | |
| 852 | memset(sxfer, 0, len); |
| 853 | |
| 854 | uxfer = (struct libusb_transfer *)( |
| 855 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 856 | |
| 857 | /* set default value */ |
| 858 | uxfer->num_iso_packets = iso_packets; |
| 859 | |
| 860 | return (uxfer); |
| 861 | } |
| 862 | |
| 863 | void |
| 864 | libusb_free_transfer(struct libusb_transfer *uxfer) |
| 865 | { |
| 866 | struct libusb_super_transfer *sxfer; |
| 867 | |
| 868 | if (uxfer == NULL) |
| 869 | return; /* be NULL safe */ |
| 870 | |
| 871 | /* check if we should free the transfer buffer */ |
| 872 | if (uxfer->flags & LIBUSB_TRANSFER_FREE_BUFFER) |
| 873 | free(uxfer->buffer); |
| 874 | |
| 875 | sxfer = (struct libusb_super_transfer *)( |
| 876 | (uint8_t *)uxfer - sizeof(*sxfer)); |
| 877 | |
| 878 | free(sxfer); |
| 879 | } |
| 880 | |
| 881 | static uint32_t |
| 882 | libusb10_get_maxframe(struct libusb20_device *pdev, libusb_transfer *xfer) |
| 883 | { |
| 884 | uint32_t ret; |
| 885 | |
| 886 | switch (xfer->type) { |
| 887 | case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: |
| 888 | ret = 60 | LIBUSB20_MAX_FRAME_PRE_SCALE; /* 60ms */ |
| 889 | break; |
| 890 | case LIBUSB_TRANSFER_TYPE_CONTROL: |
| 891 | ret = 2; |
| 892 | break; |
| 893 | default: |
| 894 | ret = 1; |
| 895 | break; |
| 896 | } |
| 897 | return (ret); |
| 898 | } |
| 899 | |
| 900 | static int |
| 901 | libusb10_get_buffsize(struct libusb20_device *pdev, libusb_transfer *xfer) |
| 902 | { |
| 903 | int ret; |
| 904 | int usb_speed; |
| 905 | |
| 906 | usb_speed = libusb20_dev_get_speed(pdev); |
| 907 | |
| 908 | switch (xfer->type) { |
| 909 | case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: |
| 910 | ret = 0; /* kernel will auto-select */ |
| 911 | break; |
| 912 | case LIBUSB_TRANSFER_TYPE_CONTROL: |
| 913 | ret = 1024; |
| 914 | break; |
| 915 | default: |
| 916 | switch (usb_speed) { |
| 917 | case LIBUSB20_SPEED_LOW: |
| 918 | ret = 256; |
| 919 | break; |
| 920 | case LIBUSB20_SPEED_FULL: |
| 921 | ret = 4096; |
| 922 | break; |
| 923 | default: |
| 924 | ret = 16384; |
| 925 | break; |
| 926 | } |
| 927 | break; |
| 928 | } |
| 929 | return (ret); |
| 930 | } |
| 931 | |
| 932 | static int |
| 933 | libusb10_convert_error(uint8_t status) |
| 934 | { |
| 935 | ; /* indent fix */ |
| 936 | |
| 937 | switch (status) { |
| 938 | case LIBUSB20_TRANSFER_START: |
| 939 | case LIBUSB20_TRANSFER_COMPLETED: |
| 940 | return (LIBUSB_TRANSFER_COMPLETED); |
| 941 | case LIBUSB20_TRANSFER_OVERFLOW: |
| 942 | return (LIBUSB_TRANSFER_OVERFLOW); |
| 943 | case LIBUSB20_TRANSFER_NO_DEVICE: |
| 944 | return (LIBUSB_TRANSFER_NO_DEVICE); |
| 945 | case LIBUSB20_TRANSFER_STALL: |
| 946 | return (LIBUSB_TRANSFER_STALL); |
| 947 | case LIBUSB20_TRANSFER_CANCELLED: |
| 948 | return (LIBUSB_TRANSFER_CANCELLED); |
| 949 | case LIBUSB20_TRANSFER_TIMED_OUT: |
| 950 | return (LIBUSB_TRANSFER_TIMED_OUT); |
| 951 | default: |
| 952 | return (LIBUSB_TRANSFER_ERROR); |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | /* This function must be called locked */ |
| 957 | |
| 958 | static void |
| 959 | libusb10_complete_transfer(struct libusb20_transfer *pxfer, |
| 960 | struct libusb_super_transfer *sxfer, int status) |
| 961 | { |
| 962 | struct libusb_transfer *uxfer; |
| 963 | struct libusb_device *dev; |
| 964 | |
| 965 | uxfer = (struct libusb_transfer *)( |
| 966 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 967 | |
| 968 | if (pxfer != NULL) |
| 969 | libusb20_tr_set_priv_sc1(pxfer, NULL); |
| 970 | |
| 971 | /* set transfer status */ |
| 972 | uxfer->status = status; |
| 973 | |
| 974 | /* update super transfer state */ |
| 975 | sxfer->state = LIBUSB_SUPER_XFER_ST_NONE; |
| 976 | |
| 977 | dev = libusb_get_device(uxfer->dev_handle); |
| 978 | |
| 979 | TAILQ_INSERT_TAIL(&dev->ctx->tr_done, sxfer, entry); |
| 980 | } |
| 981 | |
| 982 | /* This function must be called locked */ |
| 983 | |
| 984 | static void |
| 985 | libusb10_isoc_proxy(struct libusb20_transfer *pxfer) |
| 986 | { |
| 987 | struct libusb_super_transfer *sxfer; |
| 988 | struct libusb_transfer *uxfer; |
| 989 | uint32_t actlen; |
| 990 | uint16_t iso_packets; |
| 991 | uint16_t i; |
| 992 | uint8_t status; |
| 993 | uint8_t flags; |
| 994 | |
| 995 | status = libusb20_tr_get_status(pxfer); |
| 996 | sxfer = libusb20_tr_get_priv_sc1(pxfer); |
| 997 | actlen = libusb20_tr_get_actual_length(pxfer); |
| 998 | iso_packets = libusb20_tr_get_max_frames(pxfer); |
| 999 | |
| 1000 | if (sxfer == NULL) |
| 1001 | return; /* cancelled - nothing to do */ |
| 1002 | |
| 1003 | uxfer = (struct libusb_transfer *)( |
| 1004 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 1005 | |
| 1006 | if (iso_packets > uxfer->num_iso_packets) |
| 1007 | iso_packets = uxfer->num_iso_packets; |
| 1008 | |
| 1009 | if (iso_packets == 0) |
| 1010 | return; /* nothing to do */ |
| 1011 | |
| 1012 | /* make sure that the number of ISOCHRONOUS packets is valid */ |
| 1013 | uxfer->num_iso_packets = iso_packets; |
| 1014 | |
| 1015 | flags = uxfer->flags; |
| 1016 | |
| 1017 | switch (status) { |
| 1018 | case LIBUSB20_TRANSFER_COMPLETED: |
| 1019 | |
| 1020 | /* update actual length */ |
| 1021 | uxfer->actual_length = actlen; |
| 1022 | for (i = 0; i != iso_packets; i++) { |
| 1023 | uxfer->iso_packet_desc[i].actual_length = |
| 1024 | libusb20_tr_get_length(pxfer, i); |
| 1025 | } |
| 1026 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); |
| 1027 | break; |
| 1028 | |
| 1029 | case LIBUSB20_TRANSFER_START: |
| 1030 | |
| 1031 | /* setup length(s) */ |
| 1032 | actlen = 0; |
| 1033 | for (i = 0; i != iso_packets; i++) { |
| 1034 | libusb20_tr_setup_isoc(pxfer, |
| 1035 | &uxfer->buffer[actlen], |
| 1036 | uxfer->iso_packet_desc[i].length, i); |
| 1037 | actlen += uxfer->iso_packet_desc[i].length; |
| 1038 | } |
| 1039 | |
| 1040 | /* no remainder */ |
| 1041 | sxfer->rem_len = 0; |
| 1042 | |
| 1043 | libusb20_tr_set_total_frames(pxfer, iso_packets); |
| 1044 | libusb20_tr_submit(pxfer); |
| 1045 | |
| 1046 | /* fork another USB transfer, if any */ |
| 1047 | libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); |
| 1048 | break; |
| 1049 | |
| 1050 | default: |
| 1051 | libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); |
| 1052 | break; |
| 1053 | } |
| 1054 | } |
| 1055 | |
| 1056 | /* This function must be called locked */ |
| 1057 | |
| 1058 | static void |
| 1059 | libusb10_bulk_intr_proxy(struct libusb20_transfer *pxfer) |
| 1060 | { |
| 1061 | struct libusb_super_transfer *sxfer; |
| 1062 | struct libusb_transfer *uxfer; |
| 1063 | uint32_t max_bulk; |
| 1064 | uint32_t actlen; |
| 1065 | uint8_t status; |
| 1066 | uint8_t flags; |
| 1067 | |
| 1068 | status = libusb20_tr_get_status(pxfer); |
| 1069 | sxfer = libusb20_tr_get_priv_sc1(pxfer); |
| 1070 | max_bulk = libusb20_tr_get_max_total_length(pxfer); |
| 1071 | actlen = libusb20_tr_get_actual_length(pxfer); |
| 1072 | |
| 1073 | if (sxfer == NULL) |
| 1074 | return; /* cancelled - nothing to do */ |
| 1075 | |
| 1076 | uxfer = (struct libusb_transfer *)( |
| 1077 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 1078 | |
| 1079 | flags = uxfer->flags; |
| 1080 | |
| 1081 | switch (status) { |
| 1082 | case LIBUSB20_TRANSFER_COMPLETED: |
| 1083 | |
| 1084 | uxfer->actual_length += actlen; |
| 1085 | |
| 1086 | /* check for short packet */ |
| 1087 | if (sxfer->last_len != actlen) { |
| 1088 | if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { |
| 1089 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR); |
| 1090 | } else { |
| 1091 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); |
| 1092 | } |
| 1093 | break; |
| 1094 | } |
| 1095 | /* check for end of data */ |
| 1096 | if (sxfer->rem_len == 0) { |
| 1097 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); |
| 1098 | break; |
| 1099 | } |
| 1100 | /* FALLTHROUGH */ |
| 1101 | |
| 1102 | case LIBUSB20_TRANSFER_START: |
| 1103 | if (max_bulk > sxfer->rem_len) { |
| 1104 | max_bulk = sxfer->rem_len; |
| 1105 | } |
| 1106 | /* setup new BULK or INTERRUPT transaction */ |
| 1107 | libusb20_tr_setup_bulk(pxfer, |
| 1108 | sxfer->curr_data, max_bulk, uxfer->timeout); |
| 1109 | |
| 1110 | /* update counters */ |
| 1111 | sxfer->last_len = max_bulk; |
| 1112 | sxfer->curr_data += max_bulk; |
| 1113 | sxfer->rem_len -= max_bulk; |
| 1114 | |
| 1115 | libusb20_tr_submit(pxfer); |
| 1116 | |
| 1117 | /* check if we can fork another USB transfer */ |
| 1118 | if (sxfer->rem_len == 0) |
| 1119 | libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); |
| 1120 | break; |
| 1121 | |
| 1122 | default: |
| 1123 | libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); |
| 1124 | break; |
| 1125 | } |
| 1126 | } |
| 1127 | |
| 1128 | /* This function must be called locked */ |
| 1129 | |
| 1130 | static void |
| 1131 | libusb10_ctrl_proxy(struct libusb20_transfer *pxfer) |
| 1132 | { |
| 1133 | struct libusb_super_transfer *sxfer; |
| 1134 | struct libusb_transfer *uxfer; |
| 1135 | uint32_t max_bulk; |
| 1136 | uint32_t actlen; |
| 1137 | uint8_t status; |
| 1138 | uint8_t flags; |
| 1139 | |
| 1140 | status = libusb20_tr_get_status(pxfer); |
| 1141 | sxfer = libusb20_tr_get_priv_sc1(pxfer); |
| 1142 | max_bulk = libusb20_tr_get_max_total_length(pxfer); |
| 1143 | actlen = libusb20_tr_get_actual_length(pxfer); |
| 1144 | |
| 1145 | if (sxfer == NULL) |
| 1146 | return; /* cancelled - nothing to do */ |
| 1147 | |
| 1148 | uxfer = (struct libusb_transfer *)( |
| 1149 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 1150 | |
| 1151 | flags = uxfer->flags; |
| 1152 | |
| 1153 | switch (status) { |
| 1154 | case LIBUSB20_TRANSFER_COMPLETED: |
| 1155 | |
| 1156 | uxfer->actual_length += actlen; |
| 1157 | |
| 1158 | /* subtract length of SETUP packet, if any */ |
| 1159 | actlen -= libusb20_tr_get_length(pxfer, 0); |
| 1160 | |
| 1161 | /* check for short packet */ |
| 1162 | if (sxfer->last_len != actlen) { |
| 1163 | if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) { |
| 1164 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR); |
| 1165 | } else { |
| 1166 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); |
| 1167 | } |
| 1168 | break; |
| 1169 | } |
| 1170 | /* check for end of data */ |
| 1171 | if (sxfer->rem_len == 0) { |
| 1172 | libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED); |
| 1173 | break; |
| 1174 | } |
| 1175 | /* FALLTHROUGH */ |
| 1176 | |
| 1177 | case LIBUSB20_TRANSFER_START: |
| 1178 | if (max_bulk > sxfer->rem_len) { |
| 1179 | max_bulk = sxfer->rem_len; |
| 1180 | } |
| 1181 | /* setup new CONTROL transaction */ |
| 1182 | if (status == LIBUSB20_TRANSFER_COMPLETED) { |
| 1183 | /* next fragment - don't send SETUP packet */ |
| 1184 | libusb20_tr_set_length(pxfer, 0, 0); |
| 1185 | } else { |
| 1186 | /* first fragment - send SETUP packet */ |
| 1187 | libusb20_tr_set_length(pxfer, 8, 0); |
| 1188 | libusb20_tr_set_buffer(pxfer, uxfer->buffer, 0); |
| 1189 | } |
| 1190 | |
| 1191 | if (max_bulk != 0) { |
| 1192 | libusb20_tr_set_length(pxfer, max_bulk, 1); |
| 1193 | libusb20_tr_set_buffer(pxfer, sxfer->curr_data, 1); |
| 1194 | libusb20_tr_set_total_frames(pxfer, 2); |
| 1195 | } else { |
| 1196 | libusb20_tr_set_total_frames(pxfer, 1); |
| 1197 | } |
| 1198 | |
| 1199 | /* update counters */ |
| 1200 | sxfer->last_len = max_bulk; |
| 1201 | sxfer->curr_data += max_bulk; |
| 1202 | sxfer->rem_len -= max_bulk; |
| 1203 | |
| 1204 | libusb20_tr_submit(pxfer); |
| 1205 | |
| 1206 | /* check if we can fork another USB transfer */ |
| 1207 | if (sxfer->rem_len == 0) |
| 1208 | libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint); |
| 1209 | break; |
| 1210 | |
| 1211 | default: |
| 1212 | libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status)); |
| 1213 | break; |
| 1214 | } |
| 1215 | } |
| 1216 | |
| 1217 | /* The following function must be called locked */ |
| 1218 | |
| 1219 | static void |
| 1220 | libusb10_submit_transfer_sub(struct libusb20_device *pdev, uint8_t endpoint) |
| 1221 | { |
| 1222 | struct libusb20_transfer *pxfer0; |
| 1223 | struct libusb20_transfer *pxfer1; |
| 1224 | struct libusb_super_transfer *sxfer; |
| 1225 | struct libusb_transfer *uxfer; |
| 1226 | struct libusb_device *dev; |
| 1227 | int err; |
| 1228 | int buffsize; |
| 1229 | int maxframe; |
| 1230 | int temp; |
| 1231 | uint8_t dummy; |
| 1232 | |
| 1233 | dev = libusb_get_device(pdev); |
| 1234 | |
| 1235 | pxfer0 = libusb10_get_transfer(pdev, endpoint, 0); |
| 1236 | pxfer1 = libusb10_get_transfer(pdev, endpoint, 1); |
| 1237 | |
| 1238 | if (pxfer0 == NULL || pxfer1 == NULL) |
| 1239 | return; /* shouldn't happen */ |
| 1240 | |
| 1241 | temp = 0; |
| 1242 | if (libusb20_tr_pending(pxfer0)) |
| 1243 | temp |= 1; |
| 1244 | if (libusb20_tr_pending(pxfer1)) |
| 1245 | temp |= 2; |
| 1246 | |
| 1247 | switch (temp) { |
| 1248 | case 3: |
| 1249 | /* wait till one of the transfers complete */ |
| 1250 | return; |
| 1251 | case 2: |
| 1252 | sxfer = libusb20_tr_get_priv_sc1(pxfer1); |
| 1253 | if (sxfer == NULL) |
| 1254 | return; /* cancelling */ |
| 1255 | if (sxfer->rem_len) |
| 1256 | return; /* cannot queue another one */ |
| 1257 | /* swap transfers */ |
| 1258 | pxfer1 = pxfer0; |
| 1259 | break; |
| 1260 | case 1: |
| 1261 | sxfer = libusb20_tr_get_priv_sc1(pxfer0); |
| 1262 | if (sxfer == NULL) |
| 1263 | return; /* cancelling */ |
| 1264 | if (sxfer->rem_len) |
| 1265 | return; /* cannot queue another one */ |
| 1266 | /* swap transfers */ |
| 1267 | pxfer0 = pxfer1; |
| 1268 | break; |
| 1269 | default: |
| 1270 | break; |
| 1271 | } |
| 1272 | |
| 1273 | /* find next transfer on same endpoint */ |
| 1274 | TAILQ_FOREACH(sxfer, &dev->tr_head, entry) { |
| 1275 | |
| 1276 | uxfer = (struct libusb_transfer *)( |
| 1277 | ((uint8_t *)sxfer) + sizeof(*sxfer)); |
| 1278 | |
| 1279 | if (uxfer->endpoint == endpoint) { |
| 1280 | TAILQ_REMOVE(&dev->tr_head, sxfer, entry); |
| 1281 | sxfer->entry.tqe_prev = NULL; |
| 1282 | goto found; |
| 1283 | } |
| 1284 | } |
| 1285 | return; /* success */ |
| 1286 | |
| 1287 | found: |
| 1288 | |
| 1289 | libusb20_tr_set_priv_sc0(pxfer0, pdev); |
| 1290 | libusb20_tr_set_priv_sc1(pxfer0, sxfer); |
| 1291 | |
| 1292 | /* reset super transfer state */ |
| 1293 | sxfer->rem_len = uxfer->length; |
| 1294 | sxfer->curr_data = uxfer->buffer; |
| 1295 | uxfer->actual_length = 0; |
| 1296 | |
| 1297 | switch (uxfer->type) { |
| 1298 | case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS: |
| 1299 | libusb20_tr_set_callback(pxfer0, libusb10_isoc_proxy); |
| 1300 | break; |
| 1301 | case LIBUSB_TRANSFER_TYPE_BULK: |
| 1302 | case LIBUSB_TRANSFER_TYPE_INTERRUPT: |
| 1303 | libusb20_tr_set_callback(pxfer0, libusb10_bulk_intr_proxy); |
| 1304 | break; |
| 1305 | case LIBUSB_TRANSFER_TYPE_CONTROL: |
| 1306 | libusb20_tr_set_callback(pxfer0, libusb10_ctrl_proxy); |
| 1307 | if (sxfer->rem_len < 8) |
| 1308 | goto failure; |
| 1309 | |
| 1310 | /* remove SETUP packet from data */ |
| 1311 | sxfer->rem_len -= 8; |
| 1312 | sxfer->curr_data += 8; |
| 1313 | break; |
| 1314 | default: |
| 1315 | goto failure; |
| 1316 | } |
| 1317 | |
| 1318 | buffsize = libusb10_get_buffsize(pdev, uxfer); |
| 1319 | maxframe = libusb10_get_maxframe(pdev, uxfer); |
| 1320 | |
| 1321 | /* make sure the transfer is opened */ |
| 1322 | err = libusb20_tr_open(pxfer0, buffsize, maxframe, endpoint); |
| 1323 | if (err && (err != LIBUSB20_ERROR_BUSY)) { |
| 1324 | goto failure; |
| 1325 | } |
| 1326 | libusb20_tr_start(pxfer0); |
| 1327 | return; |
| 1328 | |
| 1329 | failure: |
| 1330 | libusb10_complete_transfer(pxfer0, sxfer, LIBUSB_TRANSFER_ERROR); |
| 1331 | |
| 1332 | /* make sure our event loop spins the done handler */ |
| 1333 | dummy = 0; |
| 1334 | write(dev->ctx->ctrl_pipe[1], &dummy, sizeof(dummy)); |
| 1335 | } |
| 1336 | |
| 1337 | /* The following function must be called unlocked */ |
| 1338 | |
| 1339 | int |
| 1340 | libusb_submit_transfer(struct libusb_transfer *uxfer) |
| 1341 | { |
| 1342 | struct libusb20_transfer *pxfer0; |
| 1343 | struct libusb20_transfer *pxfer1; |
| 1344 | struct libusb_super_transfer *sxfer; |
| 1345 | struct libusb_device *dev; |
| 1346 | uint8_t endpoint; |
| 1347 | int err; |
| 1348 | |
| 1349 | if (uxfer == NULL) |
| 1350 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 1351 | |
| 1352 | if (uxfer->dev_handle == NULL) |
| 1353 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 1354 | |
| 1355 | endpoint = uxfer->endpoint; |
| 1356 | |
| 1357 | dev = libusb_get_device(uxfer->dev_handle); |
| 1358 | |
| 1359 | DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer enter"); |
| 1360 | |
| 1361 | sxfer = (struct libusb_super_transfer *)( |
| 1362 | (uint8_t *)uxfer - sizeof(*sxfer)); |
| 1363 | |
| 1364 | CTX_LOCK(dev->ctx); |
| 1365 | |
| 1366 | pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0); |
| 1367 | pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1); |
| 1368 | |
| 1369 | if (pxfer0 == NULL || pxfer1 == NULL) { |
| 1370 | err = LIBUSB_ERROR_OTHER; |
| 1371 | } else if ((sxfer->entry.tqe_prev != NULL) || |
| 1372 | (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) || |
| 1373 | (libusb20_tr_get_priv_sc1(pxfer1) == sxfer)) { |
| 1374 | err = LIBUSB_ERROR_BUSY; |
| 1375 | } else { |
| 1376 | |
| 1377 | /* set pending state */ |
| 1378 | sxfer->state = LIBUSB_SUPER_XFER_ST_PEND; |
| 1379 | |
| 1380 | /* insert transfer into transfer head list */ |
| 1381 | TAILQ_INSERT_TAIL(&dev->tr_head, sxfer, entry); |
| 1382 | |
| 1383 | /* start work transfers */ |
| 1384 | libusb10_submit_transfer_sub( |
| 1385 | uxfer->dev_handle, endpoint); |
| 1386 | |
| 1387 | err = 0; /* success */ |
| 1388 | } |
| 1389 | |
| 1390 | CTX_UNLOCK(dev->ctx); |
| 1391 | |
| 1392 | DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer leave %d", err); |
| 1393 | |
| 1394 | return (err); |
| 1395 | } |
| 1396 | |
| 1397 | /* Asynchronous transfer cancel */ |
| 1398 | |
| 1399 | int |
| 1400 | libusb_cancel_transfer(struct libusb_transfer *uxfer) |
| 1401 | { |
| 1402 | struct libusb20_transfer *pxfer0; |
| 1403 | struct libusb20_transfer *pxfer1; |
| 1404 | struct libusb_super_transfer *sxfer; |
| 1405 | struct libusb_device *dev; |
| 1406 | uint8_t endpoint; |
| 1407 | int retval; |
| 1408 | |
| 1409 | if (uxfer == NULL) |
| 1410 | return (LIBUSB_ERROR_INVALID_PARAM); |
| 1411 | |
| 1412 | /* check if not initialised */ |
| 1413 | if (uxfer->dev_handle == NULL) |
| 1414 | return (LIBUSB_ERROR_NOT_FOUND); |
| 1415 | |
| 1416 | endpoint = uxfer->endpoint; |
| 1417 | |
| 1418 | dev = libusb_get_device(uxfer->dev_handle); |
| 1419 | |
| 1420 | DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer enter"); |
| 1421 | |
| 1422 | sxfer = (struct libusb_super_transfer *)( |
| 1423 | (uint8_t *)uxfer - sizeof(*sxfer)); |
| 1424 | |
| 1425 | retval = 0; |
| 1426 | |
| 1427 | CTX_LOCK(dev->ctx); |
| 1428 | |
| 1429 | pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0); |
| 1430 | pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1); |
| 1431 | |
| 1432 | if (sxfer->state != LIBUSB_SUPER_XFER_ST_PEND) { |
| 1433 | /* only update the transfer status */ |
| 1434 | uxfer->status = LIBUSB_TRANSFER_CANCELLED; |
| 1435 | retval = LIBUSB_ERROR_NOT_FOUND; |
| 1436 | } else if (sxfer->entry.tqe_prev != NULL) { |
| 1437 | /* we are lucky - transfer is on a queue */ |
| 1438 | TAILQ_REMOVE(&dev->tr_head, sxfer, entry); |
| 1439 | sxfer->entry.tqe_prev = NULL; |
| 1440 | libusb10_complete_transfer(NULL, |
| 1441 | sxfer, LIBUSB_TRANSFER_CANCELLED); |
| 1442 | } else if (pxfer0 == NULL || pxfer1 == NULL) { |
| 1443 | /* not started */ |
| 1444 | retval = LIBUSB_ERROR_NOT_FOUND; |
| 1445 | } else if (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) { |
| 1446 | libusb10_complete_transfer(pxfer0, |
| 1447 | sxfer, LIBUSB_TRANSFER_CANCELLED); |
| 1448 | libusb20_tr_stop(pxfer0); |
| 1449 | /* make sure the queue doesn't stall */ |
| 1450 | libusb10_submit_transfer_sub( |
| 1451 | uxfer->dev_handle, endpoint); |
| 1452 | } else if (libusb20_tr_get_priv_sc1(pxfer1) == sxfer) { |
| 1453 | libusb10_complete_transfer(pxfer1, |
| 1454 | sxfer, LIBUSB_TRANSFER_CANCELLED); |
| 1455 | libusb20_tr_stop(pxfer1); |
| 1456 | /* make sure the queue doesn't stall */ |
| 1457 | libusb10_submit_transfer_sub( |
| 1458 | uxfer->dev_handle, endpoint); |
| 1459 | } else { |
| 1460 | /* not started */ |
| 1461 | retval = LIBUSB_ERROR_NOT_FOUND; |
| 1462 | } |
| 1463 | |
| 1464 | CTX_UNLOCK(dev->ctx); |
| 1465 | |
| 1466 | DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer leave"); |
| 1467 | |
| 1468 | return (retval); |
| 1469 | } |
| 1470 | |
| 1471 | UNEXPORTED void |
| 1472 | libusb10_cancel_all_transfer(libusb_device *dev) |
| 1473 | { |
| 1474 | /* TODO */ |
| 1475 | } |
| 1476 | |
| 1477 | uint16_t |
| 1478 | libusb_cpu_to_le16(uint16_t x) |
| 1479 | { |
| 1480 | return (htole16(x)); |
| 1481 | } |
| 1482 | |
| 1483 | uint16_t |
| 1484 | libusb_le16_to_cpu(uint16_t x) |
| 1485 | { |
| 1486 | return (le16toh(x)); |
| 1487 | } |
| 1488 | |
| 1489 | const char * |
| 1490 | libusb_strerror(int code) |
| 1491 | { |
| 1492 | switch (code) { |
| 1493 | case LIBUSB_SUCCESS: |
| 1494 | return ("Success"); |
| 1495 | case LIBUSB_ERROR_IO: |
| 1496 | return ("I/O error"); |
| 1497 | case LIBUSB_ERROR_INVALID_PARAM: |
| 1498 | return ("Invalid parameter"); |
| 1499 | case LIBUSB_ERROR_ACCESS: |
| 1500 | return ("Permissions error"); |
| 1501 | case LIBUSB_ERROR_NO_DEVICE: |
| 1502 | return ("No device"); |
| 1503 | case LIBUSB_ERROR_NOT_FOUND: |
| 1504 | return ("Not found"); |
| 1505 | case LIBUSB_ERROR_BUSY: |
| 1506 | return ("Device busy"); |
| 1507 | case LIBUSB_ERROR_TIMEOUT: |
| 1508 | return ("Timeout"); |
| 1509 | case LIBUSB_ERROR_OVERFLOW: |
| 1510 | return ("Overflow"); |
| 1511 | case LIBUSB_ERROR_PIPE: |
| 1512 | return ("Pipe error"); |
| 1513 | case LIBUSB_ERROR_INTERRUPTED: |
| 1514 | return ("Interrupted"); |
| 1515 | case LIBUSB_ERROR_NO_MEM: |
| 1516 | return ("Out of memory"); |
| 1517 | case LIBUSB_ERROR_NOT_SUPPORTED: |
| 1518 | return ("Not supported"); |
| 1519 | case LIBUSB_ERROR_OTHER: |
| 1520 | return ("Other error"); |
| 1521 | default: |
| 1522 | return ("Unknown error"); |
| 1523 | } |
| 1524 | } |
| 1525 | |
| 1526 | const char * |
| 1527 | libusb_error_name(int code) |
| 1528 | { |
| 1529 | switch (code) { |
| 1530 | case LIBUSB_SUCCESS: |
| 1531 | return ("LIBUSB_SUCCESS"); |
| 1532 | case LIBUSB_ERROR_IO: |
| 1533 | return ("LIBUSB_ERROR_IO"); |
| 1534 | case LIBUSB_ERROR_INVALID_PARAM: |
| 1535 | return ("LIBUSB_ERROR_INVALID_PARAM"); |
| 1536 | case LIBUSB_ERROR_ACCESS: |
| 1537 | return ("LIBUSB_ERROR_ACCESS"); |
| 1538 | case LIBUSB_ERROR_NO_DEVICE: |
| 1539 | return ("LIBUSB_ERROR_NO_DEVICE"); |
| 1540 | case LIBUSB_ERROR_NOT_FOUND: |
| 1541 | return ("LIBUSB_ERROR_NOT_FOUND"); |
| 1542 | case LIBUSB_ERROR_BUSY: |
| 1543 | return ("LIBUSB_ERROR_BUSY"); |
| 1544 | case LIBUSB_ERROR_TIMEOUT: |
| 1545 | return ("LIBUSB_ERROR_TIMEOUT"); |
| 1546 | case LIBUSB_ERROR_OVERFLOW: |
| 1547 | return ("LIBUSB_ERROR_OVERFLOW"); |
| 1548 | case LIBUSB_ERROR_PIPE: |
| 1549 | return ("LIBUSB_ERROR_PIPE"); |
| 1550 | case LIBUSB_ERROR_INTERRUPTED: |
| 1551 | return ("LIBUSB_ERROR_INTERRUPTED"); |
| 1552 | case LIBUSB_ERROR_NO_MEM: |
| 1553 | return ("LIBUSB_ERROR_NO_MEM"); |
| 1554 | case LIBUSB_ERROR_NOT_SUPPORTED: |
| 1555 | return ("LIBUSB_ERROR_NOT_SUPPORTED"); |
| 1556 | case LIBUSB_ERROR_OTHER: |
| 1557 | return ("LIBUSB_ERROR_OTHER"); |
| 1558 | default: |
| 1559 | return ("LIBUSB_ERROR_UNKNOWN"); |
| 1560 | } |
| 1561 | } |