1 /* $FreeBSD$ */
2 /*-
3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 *
5 * Copyright (c) 2008-2009 Hans Petter Selasky. 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 <ctype.h>
33 #include <poll.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37 #include <time.h>
38 #include <sys/queue.h>
39 #endif
40
41 #include "libusb20.h"
42 #include "libusb20_desc.h"
43 #include "libusb20_int.h"
44
45 static int
dummy_int(void)46 dummy_int(void)
47 {
48 return (LIBUSB20_ERROR_NOT_SUPPORTED);
49 }
50
51 static void
dummy_void(void)52 dummy_void(void)
53 {
54 return;
55 }
56
57 static void
dummy_callback(struct libusb20_transfer * xfer)58 dummy_callback(struct libusb20_transfer *xfer)
59 {
60 ; /* style fix */
61 switch (libusb20_tr_get_status(xfer)) {
62 case LIBUSB20_TRANSFER_START:
63 libusb20_tr_submit(xfer);
64 break;
65 default:
66 /* complete or error */
67 break;
68 }
69 return;
70 }
71
72 #define dummy_get_config_desc_full (void *)dummy_int
73 #define dummy_get_config_index (void *)dummy_int
74 #define dummy_set_config_index (void *)dummy_int
75 #define dummy_set_alt_index (void *)dummy_int
76 #define dummy_reset_device (void *)dummy_int
77 #define dummy_check_connected (void *)dummy_int
78 #define dummy_set_power_mode (void *)dummy_int
79 #define dummy_get_power_mode (void *)dummy_int
80 #define dummy_get_power_usage (void *)dummy_int
81 #define dummy_get_stats (void *)dummy_int
82 #define dummy_kernel_driver_active (void *)dummy_int
83 #define dummy_detach_kernel_driver (void *)dummy_int
84 #define dummy_do_request_sync (void *)dummy_int
85 #define dummy_tr_open (void *)dummy_int
86 #define dummy_tr_close (void *)dummy_int
87 #define dummy_tr_clear_stall_sync (void *)dummy_int
88 #define dummy_process (void *)dummy_int
89 #define dummy_dev_info (void *)dummy_int
90 #define dummy_dev_get_iface_driver (void *)dummy_int
91
92 #define dummy_tr_submit (void *)dummy_void
93 #define dummy_tr_cancel_async (void *)dummy_void
94
95 static const struct libusb20_device_methods libusb20_dummy_methods = {
96 LIBUSB20_DEVICE(LIBUSB20_DECLARE, dummy)
97 };
98
99 void
libusb20_tr_callback_wrapper(struct libusb20_transfer * xfer)100 libusb20_tr_callback_wrapper(struct libusb20_transfer *xfer)
101 {
102 ; /* style fix */
103
104 repeat:
105
106 if (!xfer->is_pending) {
107 xfer->status = LIBUSB20_TRANSFER_START;
108 } else {
109 xfer->is_pending = 0;
110 }
111
112 xfer->callback(xfer);
113
114 if (xfer->is_restart) {
115 xfer->is_restart = 0;
116 goto repeat;
117 }
118 if (xfer->is_draining &&
119 (!xfer->is_pending)) {
120 xfer->is_draining = 0;
121 xfer->status = LIBUSB20_TRANSFER_DRAINED;
122 xfer->callback(xfer);
123 }
124 return;
125 }
126
127 int
libusb20_tr_close(struct libusb20_transfer * xfer)128 libusb20_tr_close(struct libusb20_transfer *xfer)
129 {
130 int error;
131
132 if (!xfer->is_opened) {
133 return (LIBUSB20_ERROR_OTHER);
134 }
135 error = xfer->pdev->methods->tr_close(xfer);
136
137 if (xfer->pLength) {
138 free(xfer->pLength);
139 }
140 if (xfer->ppBuffer) {
141 free(xfer->ppBuffer);
142 }
143 /* reset variable fields in case the transfer is opened again */
144 xfer->priv_sc0 = NULL;
145 xfer->priv_sc1 = NULL;
146 xfer->is_opened = 0;
147 xfer->is_pending = 0;
148 xfer->is_cancel = 0;
149 xfer->is_draining = 0;
150 xfer->is_restart = 0;
151 xfer->status = 0;
152 xfer->flags = 0;
153 xfer->nFrames = 0;
154 xfer->aFrames = 0;
155 xfer->timeout = 0;
156 xfer->maxFrames = 0;
157 xfer->maxTotalLength = 0;
158 xfer->maxPacketLen = 0;
159 return (error);
160 }
161
162 int
libusb20_tr_open(struct libusb20_transfer * xfer,uint32_t MaxBufSize,uint32_t MaxFrameCount,uint8_t ep_no)163 libusb20_tr_open(struct libusb20_transfer *xfer, uint32_t MaxBufSize,
164 uint32_t MaxFrameCount, uint8_t ep_no)
165 {
166 return (libusb20_tr_open_stream(xfer, MaxBufSize, MaxFrameCount, ep_no, 0));
167 }
168
169 int
libusb20_tr_open_stream(struct libusb20_transfer * xfer,uint32_t MaxBufSize,uint32_t MaxFrameCount,uint8_t ep_no,uint16_t stream_id)170 libusb20_tr_open_stream(struct libusb20_transfer *xfer, uint32_t MaxBufSize,
171 uint32_t MaxFrameCount, uint8_t ep_no, uint16_t stream_id)
172 {
173 uint32_t size;
174 uint8_t pre_scale;
175 int error;
176
177 if (xfer->is_opened)
178 return (LIBUSB20_ERROR_BUSY);
179 if (MaxFrameCount & LIBUSB20_MAX_FRAME_PRE_SCALE) {
180 MaxFrameCount &= ~LIBUSB20_MAX_FRAME_PRE_SCALE;
181 /*
182 * The kernel can setup 8 times more frames when
183 * pre-scaling ISOCHRONOUS transfers. Make sure the
184 * length and pointer buffers are big enough:
185 */
186 MaxFrameCount *= 8;
187 pre_scale = 1;
188 } else {
189 pre_scale = 0;
190 }
191 if (MaxFrameCount == 0)
192 return (LIBUSB20_ERROR_INVALID_PARAM);
193
194 xfer->maxFrames = MaxFrameCount;
195
196 size = MaxFrameCount * sizeof(xfer->pLength[0]);
197 xfer->pLength = malloc(size);
198 if (xfer->pLength == NULL) {
199 return (LIBUSB20_ERROR_NO_MEM);
200 }
201 memset(xfer->pLength, 0, size);
202
203 size = MaxFrameCount * sizeof(xfer->ppBuffer[0]);
204 xfer->ppBuffer = malloc(size);
205 if (xfer->ppBuffer == NULL) {
206 free(xfer->pLength);
207 return (LIBUSB20_ERROR_NO_MEM);
208 }
209 memset(xfer->ppBuffer, 0, size);
210
211 if (pre_scale) {
212 error = xfer->pdev->methods->tr_open(xfer, MaxBufSize,
213 MaxFrameCount / 8, ep_no, stream_id, 1);
214 } else {
215 error = xfer->pdev->methods->tr_open(xfer, MaxBufSize,
216 MaxFrameCount, ep_no, stream_id, 0);
217 }
218
219 if (error) {
220 free(xfer->ppBuffer);
221 free(xfer->pLength);
222 } else {
223 xfer->is_opened = 1;
224 }
225 return (error);
226 }
227
228 struct libusb20_transfer *
libusb20_tr_get_pointer(struct libusb20_device * pdev,uint16_t trIndex)229 libusb20_tr_get_pointer(struct libusb20_device *pdev, uint16_t trIndex)
230 {
231 if (trIndex >= pdev->nTransfer) {
232 return (NULL);
233 }
234 return (pdev->pTransfer + trIndex);
235 }
236
237 uint32_t
libusb20_tr_get_actual_frames(struct libusb20_transfer * xfer)238 libusb20_tr_get_actual_frames(struct libusb20_transfer *xfer)
239 {
240 return (xfer->aFrames);
241 }
242
243 uint16_t
libusb20_tr_get_time_complete(struct libusb20_transfer * xfer)244 libusb20_tr_get_time_complete(struct libusb20_transfer *xfer)
245 {
246 return (xfer->timeComplete);
247 }
248
249 uint32_t
libusb20_tr_get_actual_length(struct libusb20_transfer * xfer)250 libusb20_tr_get_actual_length(struct libusb20_transfer *xfer)
251 {
252 uint32_t x;
253 uint32_t actlen = 0;
254
255 for (x = 0; x != xfer->aFrames; x++) {
256 actlen += xfer->pLength[x];
257 }
258 return (actlen);
259 }
260
261 uint32_t
libusb20_tr_get_max_frames(struct libusb20_transfer * xfer)262 libusb20_tr_get_max_frames(struct libusb20_transfer *xfer)
263 {
264 return (xfer->maxFrames);
265 }
266
267 uint32_t
libusb20_tr_get_max_packet_length(struct libusb20_transfer * xfer)268 libusb20_tr_get_max_packet_length(struct libusb20_transfer *xfer)
269 {
270 /*
271 * Special Case NOTE: If the packet multiplier is non-zero for
272 * High Speed USB, the value returned is equal to
273 * "wMaxPacketSize * multiplier" !
274 */
275 return (xfer->maxPacketLen);
276 }
277
278 uint32_t
libusb20_tr_get_max_total_length(struct libusb20_transfer * xfer)279 libusb20_tr_get_max_total_length(struct libusb20_transfer *xfer)
280 {
281 return (xfer->maxTotalLength);
282 }
283
284 uint8_t
libusb20_tr_get_status(struct libusb20_transfer * xfer)285 libusb20_tr_get_status(struct libusb20_transfer *xfer)
286 {
287 return (xfer->status);
288 }
289
290 uint8_t
libusb20_tr_pending(struct libusb20_transfer * xfer)291 libusb20_tr_pending(struct libusb20_transfer *xfer)
292 {
293 return (xfer->is_pending);
294 }
295
296 void *
libusb20_tr_get_priv_sc0(struct libusb20_transfer * xfer)297 libusb20_tr_get_priv_sc0(struct libusb20_transfer *xfer)
298 {
299 return (xfer->priv_sc0);
300 }
301
302 void *
libusb20_tr_get_priv_sc1(struct libusb20_transfer * xfer)303 libusb20_tr_get_priv_sc1(struct libusb20_transfer *xfer)
304 {
305 return (xfer->priv_sc1);
306 }
307
308 void
libusb20_tr_stop(struct libusb20_transfer * xfer)309 libusb20_tr_stop(struct libusb20_transfer *xfer)
310 {
311 if (!xfer->is_opened) {
312 /* transfer is not opened */
313 return;
314 }
315 if (!xfer->is_pending) {
316 /* transfer not pending */
317 return;
318 }
319 if (xfer->is_cancel) {
320 /* already cancelling */
321 return;
322 }
323 xfer->is_cancel = 1; /* we are cancelling */
324
325 xfer->pdev->methods->tr_cancel_async(xfer);
326 return;
327 }
328
329 void
libusb20_tr_drain(struct libusb20_transfer * xfer)330 libusb20_tr_drain(struct libusb20_transfer *xfer)
331 {
332 if (!xfer->is_opened) {
333 /* transfer is not opened */
334 return;
335 }
336 /* make sure that we are cancelling */
337 libusb20_tr_stop(xfer);
338
339 if (xfer->is_pending) {
340 xfer->is_draining = 1;
341 }
342 return;
343 }
344
345 void
libusb20_tr_clear_stall_sync(struct libusb20_transfer * xfer)346 libusb20_tr_clear_stall_sync(struct libusb20_transfer *xfer)
347 {
348 xfer->pdev->methods->tr_clear_stall_sync(xfer);
349 return;
350 }
351
352 void
libusb20_tr_set_buffer(struct libusb20_transfer * xfer,void * buffer,uint16_t frIndex)353 libusb20_tr_set_buffer(struct libusb20_transfer *xfer, void *buffer, uint16_t frIndex)
354 {
355 xfer->ppBuffer[frIndex] = libusb20_pass_ptr(buffer);
356 return;
357 }
358
359 void
libusb20_tr_set_callback(struct libusb20_transfer * xfer,libusb20_tr_callback_t * cb)360 libusb20_tr_set_callback(struct libusb20_transfer *xfer, libusb20_tr_callback_t *cb)
361 {
362 xfer->callback = cb;
363 return;
364 }
365
366 void
libusb20_tr_set_flags(struct libusb20_transfer * xfer,uint8_t flags)367 libusb20_tr_set_flags(struct libusb20_transfer *xfer, uint8_t flags)
368 {
369 xfer->flags = flags;
370 return;
371 }
372
373 uint32_t
libusb20_tr_get_length(struct libusb20_transfer * xfer,uint16_t frIndex)374 libusb20_tr_get_length(struct libusb20_transfer *xfer, uint16_t frIndex)
375 {
376 return (xfer->pLength[frIndex]);
377 }
378
379 void
libusb20_tr_set_length(struct libusb20_transfer * xfer,uint32_t length,uint16_t frIndex)380 libusb20_tr_set_length(struct libusb20_transfer *xfer, uint32_t length, uint16_t frIndex)
381 {
382 xfer->pLength[frIndex] = length;
383 return;
384 }
385
386 void
libusb20_tr_set_priv_sc0(struct libusb20_transfer * xfer,void * sc0)387 libusb20_tr_set_priv_sc0(struct libusb20_transfer *xfer, void *sc0)
388 {
389 xfer->priv_sc0 = sc0;
390 return;
391 }
392
393 void
libusb20_tr_set_priv_sc1(struct libusb20_transfer * xfer,void * sc1)394 libusb20_tr_set_priv_sc1(struct libusb20_transfer *xfer, void *sc1)
395 {
396 xfer->priv_sc1 = sc1;
397 return;
398 }
399
400 void
libusb20_tr_set_timeout(struct libusb20_transfer * xfer,uint32_t timeout)401 libusb20_tr_set_timeout(struct libusb20_transfer *xfer, uint32_t timeout)
402 {
403 xfer->timeout = timeout;
404 return;
405 }
406
407 void
libusb20_tr_set_total_frames(struct libusb20_transfer * xfer,uint32_t nFrames)408 libusb20_tr_set_total_frames(struct libusb20_transfer *xfer, uint32_t nFrames)
409 {
410 if (nFrames > xfer->maxFrames) {
411 /* should not happen */
412 nFrames = xfer->maxFrames;
413 }
414 xfer->nFrames = nFrames;
415 return;
416 }
417
418 void
libusb20_tr_setup_bulk(struct libusb20_transfer * xfer,void * pBuf,uint32_t length,uint32_t timeout)419 libusb20_tr_setup_bulk(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint32_t timeout)
420 {
421 xfer->ppBuffer[0] = libusb20_pass_ptr(pBuf);
422 xfer->pLength[0] = length;
423 xfer->timeout = timeout;
424 xfer->nFrames = 1;
425 return;
426 }
427
428 void
libusb20_tr_setup_control(struct libusb20_transfer * xfer,void * psetup,void * pBuf,uint32_t timeout)429 libusb20_tr_setup_control(struct libusb20_transfer *xfer, void *psetup, void *pBuf, uint32_t timeout)
430 {
431 uint16_t len;
432
433 xfer->ppBuffer[0] = libusb20_pass_ptr(psetup);
434 xfer->pLength[0] = 8; /* fixed */
435 xfer->timeout = timeout;
436
437 len = ((uint8_t *)psetup)[6] | (((uint8_t *)psetup)[7] << 8);
438
439 if (len != 0) {
440 xfer->nFrames = 2;
441 xfer->ppBuffer[1] = libusb20_pass_ptr(pBuf);
442 xfer->pLength[1] = len;
443 } else {
444 xfer->nFrames = 1;
445 }
446 return;
447 }
448
449 void
libusb20_tr_setup_intr(struct libusb20_transfer * xfer,void * pBuf,uint32_t length,uint32_t timeout)450 libusb20_tr_setup_intr(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint32_t timeout)
451 {
452 xfer->ppBuffer[0] = libusb20_pass_ptr(pBuf);
453 xfer->pLength[0] = length;
454 xfer->timeout = timeout;
455 xfer->nFrames = 1;
456 return;
457 }
458
459 void
libusb20_tr_setup_isoc(struct libusb20_transfer * xfer,void * pBuf,uint32_t length,uint16_t frIndex)460 libusb20_tr_setup_isoc(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint16_t frIndex)
461 {
462 if (frIndex >= xfer->maxFrames) {
463 /* should not happen */
464 return;
465 }
466 xfer->ppBuffer[frIndex] = libusb20_pass_ptr(pBuf);
467 xfer->pLength[frIndex] = length;
468 return;
469 }
470
471 uint8_t
libusb20_tr_bulk_intr_sync(struct libusb20_transfer * xfer,void * pbuf,uint32_t length,uint32_t * pactlen,uint32_t timeout)472 libusb20_tr_bulk_intr_sync(struct libusb20_transfer *xfer,
473 void *pbuf, uint32_t length, uint32_t *pactlen,
474 uint32_t timeout)
475 {
476 struct libusb20_device *pdev = xfer->pdev;
477 uint32_t transfer_max;
478 uint32_t transfer_act;
479 uint8_t retval;
480
481 /* set some sensible default value */
482 if (pactlen != NULL)
483 *pactlen = 0;
484
485 /* check for error condition */
486 if (libusb20_tr_pending(xfer))
487 return (LIBUSB20_ERROR_OTHER);
488
489 do {
490 /* compute maximum transfer length */
491 transfer_max =
492 libusb20_tr_get_max_total_length(xfer);
493
494 if (transfer_max > length)
495 transfer_max = length;
496
497 /* setup bulk or interrupt transfer */
498 libusb20_tr_setup_bulk(xfer, pbuf,
499 transfer_max, timeout);
500
501 /* start the transfer */
502 libusb20_tr_start(xfer);
503
504 /* wait for transfer completion */
505 while (libusb20_dev_process(pdev) == 0) {
506
507 if (libusb20_tr_pending(xfer) == 0)
508 break;
509
510 libusb20_dev_wait_process(pdev, -1);
511 }
512
513 transfer_act = libusb20_tr_get_actual_length(xfer);
514
515 /* update actual length, if any */
516 if (pactlen != NULL)
517 pactlen[0] += transfer_act;
518
519 /* check transfer status */
520 retval = libusb20_tr_get_status(xfer);
521 if (retval)
522 break;
523
524 /* check for short transfer */
525 if (transfer_act != transfer_max)
526 break;
527
528 /* update buffer pointer and length */
529 pbuf = ((uint8_t *)pbuf) + transfer_max;
530 length = length - transfer_max;
531
532 } while (length != 0);
533
534 return (retval);
535 }
536
537 void
libusb20_tr_submit(struct libusb20_transfer * xfer)538 libusb20_tr_submit(struct libusb20_transfer *xfer)
539 {
540 if (!xfer->is_opened) {
541 /* transfer is not opened */
542 return;
543 }
544 if (xfer->is_pending) {
545 /* should not happen */
546 return;
547 }
548 xfer->is_pending = 1; /* we are pending */
549 xfer->is_cancel = 0; /* not cancelling */
550 xfer->is_restart = 0; /* not restarting */
551
552 xfer->pdev->methods->tr_submit(xfer);
553 return;
554 }
555
556 void
libusb20_tr_start(struct libusb20_transfer * xfer)557 libusb20_tr_start(struct libusb20_transfer *xfer)
558 {
559 if (!xfer->is_opened) {
560 /* transfer is not opened */
561 return;
562 }
563 if (xfer->is_pending) {
564 if (xfer->is_cancel) {
565 /* cancelling - restart */
566 xfer->is_restart = 1;
567 }
568 /* transfer not pending */
569 return;
570 }
571 /* get into the callback */
572 libusb20_tr_callback_wrapper(xfer);
573 return;
574 }
575
576 /* USB device operations */
577
578 int
libusb20_dev_close(struct libusb20_device * pdev)579 libusb20_dev_close(struct libusb20_device *pdev)
580 {
581 struct libusb20_transfer *xfer;
582 uint16_t x;
583 int error = 0;
584
585 if (!pdev->is_opened) {
586 return (LIBUSB20_ERROR_OTHER);
587 }
588 for (x = 0; x != pdev->nTransfer; x++) {
589 xfer = pdev->pTransfer + x;
590
591 if (!xfer->is_opened) {
592 /* transfer is not opened */
593 continue;
594 }
595
596 libusb20_tr_drain(xfer);
597
598 libusb20_tr_close(xfer);
599 }
600
601 if (pdev->pTransfer != NULL) {
602 free(pdev->pTransfer);
603 pdev->pTransfer = NULL;
604 }
605 error = pdev->beMethods->close_device(pdev);
606
607 pdev->methods = &libusb20_dummy_methods;
608
609 pdev->is_opened = 0;
610
611 /*
612 * Make sure libusb20_tr_get_pointer() fails:
613 */
614 pdev->nTransfer = 0;
615
616 /*
617 * The following variable is only used by the libusb v0.1
618 * compat layer:
619 */
620 pdev->claimed_interface = 0;
621
622 /*
623 * The following variable is only used by the libusb v1.0
624 * compat layer:
625 */
626 pdev->auto_detach = 0;
627
628 return (error);
629 }
630
631 int
libusb20_dev_detach_kernel_driver(struct libusb20_device * pdev,uint8_t ifaceIndex)632 libusb20_dev_detach_kernel_driver(struct libusb20_device *pdev, uint8_t ifaceIndex)
633 {
634 int error;
635
636 error = pdev->methods->detach_kernel_driver(pdev, ifaceIndex);
637 return (error);
638 }
639
640 struct LIBUSB20_DEVICE_DESC_DECODED *
libusb20_dev_get_device_desc(struct libusb20_device * pdev)641 libusb20_dev_get_device_desc(struct libusb20_device *pdev)
642 {
643 return (&(pdev->ddesc));
644 }
645
646 int
libusb20_dev_get_fd(struct libusb20_device * pdev)647 libusb20_dev_get_fd(struct libusb20_device *pdev)
648 {
649 return (pdev->file);
650 }
651
652 int
libusb20_dev_kernel_driver_active(struct libusb20_device * pdev,uint8_t ifaceIndex)653 libusb20_dev_kernel_driver_active(struct libusb20_device *pdev, uint8_t ifaceIndex)
654 {
655 int error;
656
657 error = pdev->methods->kernel_driver_active(pdev, ifaceIndex);
658 return (error);
659 }
660
661 int
libusb20_dev_open(struct libusb20_device * pdev,uint16_t nTransferMax)662 libusb20_dev_open(struct libusb20_device *pdev, uint16_t nTransferMax)
663 {
664 struct libusb20_transfer *xfer;
665 uint32_t size;
666 uint16_t x;
667 int error;
668
669 if (pdev->is_opened) {
670 return (LIBUSB20_ERROR_BUSY);
671 }
672 if (nTransferMax >= 256) {
673 return (LIBUSB20_ERROR_INVALID_PARAM);
674 } else if (nTransferMax != 0) {
675 size = sizeof(pdev->pTransfer[0]) * nTransferMax;
676 pdev->pTransfer = malloc(size);
677 if (pdev->pTransfer == NULL) {
678 return (LIBUSB20_ERROR_NO_MEM);
679 }
680 memset(pdev->pTransfer, 0, size);
681 }
682 /* initialise all transfers */
683 for (x = 0; x != nTransferMax; x++) {
684
685 xfer = pdev->pTransfer + x;
686
687 xfer->pdev = pdev;
688 xfer->trIndex = x;
689 xfer->callback = &dummy_callback;
690 }
691
692 /* set "nTransfer" early */
693 pdev->nTransfer = nTransferMax;
694
695 error = pdev->beMethods->open_device(pdev, nTransferMax);
696
697 if (error) {
698 if (pdev->pTransfer != NULL) {
699 free(pdev->pTransfer);
700 pdev->pTransfer = NULL;
701 }
702 pdev->file = -1;
703 pdev->file_ctrl = -1;
704 pdev->nTransfer = 0;
705 } else {
706 pdev->is_opened = 1;
707 }
708 return (error);
709 }
710
711 int
libusb20_dev_reset(struct libusb20_device * pdev)712 libusb20_dev_reset(struct libusb20_device *pdev)
713 {
714 int error;
715
716 error = pdev->methods->reset_device(pdev);
717 return (error);
718 }
719
720 int
libusb20_dev_check_connected(struct libusb20_device * pdev)721 libusb20_dev_check_connected(struct libusb20_device *pdev)
722 {
723 int error;
724
725 error = pdev->methods->check_connected(pdev);
726 return (error);
727 }
728
729 int
libusb20_dev_set_power_mode(struct libusb20_device * pdev,uint8_t power_mode)730 libusb20_dev_set_power_mode(struct libusb20_device *pdev, uint8_t power_mode)
731 {
732 int error;
733
734 error = pdev->methods->set_power_mode(pdev, power_mode);
735 return (error);
736 }
737
738 uint8_t
libusb20_dev_get_power_mode(struct libusb20_device * pdev)739 libusb20_dev_get_power_mode(struct libusb20_device *pdev)
740 {
741 int error;
742 uint8_t power_mode;
743
744 error = pdev->methods->get_power_mode(pdev, &power_mode);
745 if (error)
746 power_mode = LIBUSB20_POWER_ON; /* fake power mode */
747 return (power_mode);
748 }
749
750 int
libusb20_dev_get_port_path(struct libusb20_device * pdev,uint8_t * buf,uint8_t bufsize)751 libusb20_dev_get_port_path(struct libusb20_device *pdev, uint8_t *buf, uint8_t bufsize)
752 {
753
754 if (pdev->port_level == 0) {
755 /*
756 * Fallback for backends without port path:
757 */
758 if (bufsize < 2)
759 return (LIBUSB20_ERROR_OVERFLOW);
760 buf[0] = pdev->parent_address;
761 buf[1] = pdev->parent_port;
762 return (2);
763 }
764
765 /* check if client buffer is too small */
766 if (pdev->port_level > bufsize)
767 return (LIBUSB20_ERROR_OVERFLOW);
768
769 /* copy port number information */
770 memcpy(buf, pdev->port_path, pdev->port_level);
771
772 return (pdev->port_level); /* success */
773 }
774
775 uint16_t
libusb20_dev_get_power_usage(struct libusb20_device * pdev)776 libusb20_dev_get_power_usage(struct libusb20_device *pdev)
777 {
778 int error;
779 uint16_t power_usage;
780
781 error = pdev->methods->get_power_usage(pdev, &power_usage);
782 if (error)
783 power_usage = 0;
784 return (power_usage);
785 }
786
787 int
libusb20_dev_set_alt_index(struct libusb20_device * pdev,uint8_t ifaceIndex,uint8_t altIndex)788 libusb20_dev_set_alt_index(struct libusb20_device *pdev, uint8_t ifaceIndex, uint8_t altIndex)
789 {
790 int error;
791
792 error = pdev->methods->set_alt_index(pdev, ifaceIndex, altIndex);
793 return (error);
794 }
795
796 int
libusb20_dev_set_config_index(struct libusb20_device * pdev,uint8_t configIndex)797 libusb20_dev_set_config_index(struct libusb20_device *pdev, uint8_t configIndex)
798 {
799 int error;
800
801 error = pdev->methods->set_config_index(pdev, configIndex);
802 return (error);
803 }
804
805 int
libusb20_dev_request_sync(struct libusb20_device * pdev,struct LIBUSB20_CONTROL_SETUP_DECODED * setup,void * data,uint16_t * pactlen,uint32_t timeout,uint8_t flags)806 libusb20_dev_request_sync(struct libusb20_device *pdev,
807 struct LIBUSB20_CONTROL_SETUP_DECODED *setup, void *data,
808 uint16_t *pactlen, uint32_t timeout, uint8_t flags)
809 {
810 int error;
811
812 error = pdev->methods->do_request_sync(pdev,
813 setup, data, pactlen, timeout, flags);
814 return (error);
815 }
816
817 int
libusb20_dev_req_string_sync(struct libusb20_device * pdev,uint8_t str_index,uint16_t langid,void * ptr,uint16_t len)818 libusb20_dev_req_string_sync(struct libusb20_device *pdev,
819 uint8_t str_index, uint16_t langid, void *ptr, uint16_t len)
820 {
821 struct LIBUSB20_CONTROL_SETUP_DECODED req;
822 int error;
823 int flags;
824
825 /* make sure memory is initialised */
826 memset(ptr, 0, len);
827
828 if (len < 4) {
829 /* invalid length */
830 return (LIBUSB20_ERROR_INVALID_PARAM);
831 }
832 LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &req);
833
834 /*
835 * We need to read the USB string in two steps else some USB
836 * devices will complain.
837 */
838 req.bmRequestType =
839 LIBUSB20_REQUEST_TYPE_STANDARD |
840 LIBUSB20_RECIPIENT_DEVICE |
841 LIBUSB20_ENDPOINT_IN;
842 req.bRequest = LIBUSB20_REQUEST_GET_DESCRIPTOR;
843 req.wValue = (LIBUSB20_DT_STRING << 8) | str_index;
844 req.wIndex = langid;
845 req.wLength = 4; /* bytes */
846
847 error = libusb20_dev_request_sync(pdev, &req,
848 ptr, NULL, 1000, LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK);
849 if (error) {
850 /* try to request full string */
851 req.wLength = 255;
852 flags = 0;
853 } else {
854 /* extract length and request full string */
855 req.wLength = *(uint8_t *)ptr;
856 flags = LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK;
857 }
858 if (req.wLength > len) {
859 /* partial string read */
860 req.wLength = len;
861 }
862 error = libusb20_dev_request_sync(pdev, &req, ptr, NULL, 1000, flags);
863 if (error)
864 return (error);
865
866 if (((uint8_t *)ptr)[1] != LIBUSB20_DT_STRING)
867 return (LIBUSB20_ERROR_OTHER);
868 return (0); /* success */
869 }
870
871 int
libusb20_dev_req_string_simple_sync(struct libusb20_device * pdev,uint8_t str_index,void * ptr,uint16_t len)872 libusb20_dev_req_string_simple_sync(struct libusb20_device *pdev,
873 uint8_t str_index, void *ptr, uint16_t len)
874 {
875 char *buf;
876 int error;
877 uint16_t langid;
878 uint16_t n;
879 uint16_t i;
880 uint16_t c;
881 uint8_t temp[255];
882 uint8_t swap;
883
884 /* the following code derives from the FreeBSD USB kernel */
885
886 if ((len < 1) || (ptr == NULL)) {
887 /* too short buffer */
888 return (LIBUSB20_ERROR_INVALID_PARAM);
889 }
890 error = libusb20_dev_req_string_sync(pdev,
891 0, 0, temp, sizeof(temp));
892 if (error < 0) {
893 *(uint8_t *)ptr = 0; /* zero terminate */
894 return (error);
895 }
896 langid = temp[2] | (temp[3] << 8);
897
898 error = libusb20_dev_req_string_sync(pdev, str_index,
899 langid, temp, sizeof(temp));
900 if (error < 0) {
901 *(uint8_t *)ptr = 0; /* zero terminate */
902 return (error);
903 }
904 if (temp[0] < 2) {
905 /* string length is too short */
906 *(uint8_t *)ptr = 0; /* zero terminate */
907 return (LIBUSB20_ERROR_OTHER);
908 }
909 /* reserve one byte for terminating zero */
910 len--;
911
912 /* find maximum length */
913 n = (temp[0] / 2) - 1;
914 if (n > len) {
915 n = len;
916 }
917 /* reset swap state */
918 swap = 3;
919
920 /* setup output buffer pointer */
921 buf = ptr;
922
923 /* convert and filter */
924 for (i = 0; (i != n); i++) {
925 c = temp[(2 * i) + 2] | (temp[(2 * i) + 3] << 8);
926
927 /* convert from Unicode, handle buggy strings */
928 if (((c & 0xff00) == 0) && (swap & 1)) {
929 /* Little Endian, default */
930 *buf = c;
931 swap = 1;
932 } else if (((c & 0x00ff) == 0) && (swap & 2)) {
933 /* Big Endian */
934 *buf = c >> 8;
935 swap = 2;
936 } else {
937 /* skip invalid character */
938 continue;
939 }
940 /*
941 * Filter by default - we don't allow greater and less than
942 * signs because they might confuse the dmesg printouts!
943 */
944 if ((*buf == '<') || (*buf == '>') || (!isprint(*buf))) {
945 /* skip invalid character */
946 continue;
947 }
948 buf++;
949 }
950 *buf = 0; /* zero terminate string */
951
952 return (0);
953 }
954
955 struct libusb20_config *
libusb20_dev_alloc_config(struct libusb20_device * pdev,uint8_t configIndex)956 libusb20_dev_alloc_config(struct libusb20_device *pdev, uint8_t configIndex)
957 {
958 struct libusb20_config *retval = NULL;
959 uint8_t *ptr;
960 uint16_t len;
961 uint8_t do_close;
962 int error;
963
964 /*
965 * Catch invalid configuration descriptor reads early on to
966 * avoid issues with devices that don't check for a valid USB
967 * configuration read request.
968 */
969 if (configIndex >= pdev->ddesc.bNumConfigurations)
970 return (NULL);
971
972 if (!pdev->is_opened) {
973 error = libusb20_dev_open(pdev, 0);
974 if (error) {
975 return (NULL);
976 }
977 do_close = 1;
978 } else {
979 do_close = 0;
980 }
981 error = pdev->methods->get_config_desc_full(pdev,
982 &ptr, &len, configIndex);
983
984 if (error) {
985 goto done;
986 }
987 /* parse new config descriptor */
988 retval = libusb20_parse_config_desc(ptr);
989
990 /* free config descriptor */
991 free(ptr);
992
993 done:
994 if (do_close) {
995 error = libusb20_dev_close(pdev);
996 }
997 return (retval);
998 }
999
1000 struct libusb20_device *
libusb20_dev_alloc(void)1001 libusb20_dev_alloc(void)
1002 {
1003 struct libusb20_device *pdev;
1004
1005 pdev = malloc(sizeof(*pdev));
1006 if (pdev == NULL) {
1007 return (NULL);
1008 }
1009 memset(pdev, 0, sizeof(*pdev));
1010
1011 pdev->file = -1;
1012 pdev->file_ctrl = -1;
1013 pdev->methods = &libusb20_dummy_methods;
1014 return (pdev);
1015 }
1016
1017 uint8_t
libusb20_dev_get_config_index(struct libusb20_device * pdev)1018 libusb20_dev_get_config_index(struct libusb20_device *pdev)
1019 {
1020 int error;
1021 uint8_t cfg_index;
1022 uint8_t do_close;
1023
1024 if (!pdev->is_opened) {
1025 error = libusb20_dev_open(pdev, 0);
1026 if (error == 0) {
1027 do_close = 1;
1028 } else {
1029 do_close = 0;
1030 }
1031 } else {
1032 do_close = 0;
1033 }
1034
1035 error = pdev->methods->get_config_index(pdev, &cfg_index);
1036 if (error)
1037 cfg_index = 0xFF; /* current config index */
1038 if (do_close) {
1039 if (libusb20_dev_close(pdev)) {
1040 /* ignore */
1041 }
1042 }
1043 return (cfg_index);
1044 }
1045
1046 uint8_t
libusb20_dev_get_mode(struct libusb20_device * pdev)1047 libusb20_dev_get_mode(struct libusb20_device *pdev)
1048 {
1049 return (pdev->usb_mode);
1050 }
1051
1052 uint8_t
libusb20_dev_get_speed(struct libusb20_device * pdev)1053 libusb20_dev_get_speed(struct libusb20_device *pdev)
1054 {
1055 return (pdev->usb_speed);
1056 }
1057
1058 int
libusb20_dev_get_stats(struct libusb20_device * pdev,struct libusb20_device_stats * pstats)1059 libusb20_dev_get_stats(struct libusb20_device *pdev, struct libusb20_device_stats *pstats)
1060 {
1061 uint8_t do_close;
1062 int error;
1063
1064 if (!pdev->is_opened) {
1065 error = libusb20_dev_open(pdev, 0);
1066 if (error == 0) {
1067 do_close = 1;
1068 } else {
1069 do_close = 0;
1070 }
1071 } else {
1072 do_close = 0;
1073 }
1074
1075 error = pdev->methods->get_stats(pdev, pstats);
1076
1077 if (do_close)
1078 (void) libusb20_dev_close(pdev);
1079
1080 return (error);
1081 }
1082
1083 /* if this function returns an error, the device is gone */
1084 int
libusb20_dev_process(struct libusb20_device * pdev)1085 libusb20_dev_process(struct libusb20_device *pdev)
1086 {
1087 int error;
1088
1089 error = pdev->methods->process(pdev);
1090 return (error);
1091 }
1092
1093 void
libusb20_dev_wait_process(struct libusb20_device * pdev,int timeout)1094 libusb20_dev_wait_process(struct libusb20_device *pdev, int timeout)
1095 {
1096 struct pollfd pfd[1];
1097
1098 if (!pdev->is_opened) {
1099 return;
1100 }
1101 pfd[0].fd = pdev->file;
1102 pfd[0].events = (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM);
1103 pfd[0].revents = 0;
1104
1105 if (poll(pfd, 1, timeout)) {
1106 /* ignore any error */
1107 }
1108 return;
1109 }
1110
1111 void
libusb20_dev_free(struct libusb20_device * pdev)1112 libusb20_dev_free(struct libusb20_device *pdev)
1113 {
1114 if (pdev == NULL) {
1115 /* be NULL safe */
1116 return;
1117 }
1118 if (pdev->is_opened) {
1119 if (libusb20_dev_close(pdev)) {
1120 /* ignore any errors */
1121 }
1122 }
1123 free(pdev);
1124 return;
1125 }
1126
1127 int
libusb20_dev_get_info(struct libusb20_device * pdev,struct usb_device_info * pinfo)1128 libusb20_dev_get_info(struct libusb20_device *pdev,
1129 struct usb_device_info *pinfo)
1130 {
1131 if (pinfo == NULL)
1132 return (LIBUSB20_ERROR_INVALID_PARAM);
1133
1134 return (pdev->beMethods->dev_get_info(pdev, pinfo));
1135 }
1136
1137 const char *
libusb20_dev_get_backend_name(struct libusb20_device * pdev)1138 libusb20_dev_get_backend_name(struct libusb20_device *pdev)
1139 {
1140 return (pdev->beMethods->get_backend_name());
1141 }
1142
1143 const char *
libusb20_dev_get_desc(struct libusb20_device * pdev)1144 libusb20_dev_get_desc(struct libusb20_device *pdev)
1145 {
1146 return (pdev->usb_desc);
1147 }
1148
1149 void
libusb20_dev_set_debug(struct libusb20_device * pdev,int debug)1150 libusb20_dev_set_debug(struct libusb20_device *pdev, int debug)
1151 {
1152 pdev->debug = debug;
1153 return;
1154 }
1155
1156 int
libusb20_dev_get_debug(struct libusb20_device * pdev)1157 libusb20_dev_get_debug(struct libusb20_device *pdev)
1158 {
1159 return (pdev->debug);
1160 }
1161
1162 uint8_t
libusb20_dev_get_address(struct libusb20_device * pdev)1163 libusb20_dev_get_address(struct libusb20_device *pdev)
1164 {
1165 return (pdev->device_address);
1166 }
1167
1168 uint8_t
libusb20_dev_get_parent_address(struct libusb20_device * pdev)1169 libusb20_dev_get_parent_address(struct libusb20_device *pdev)
1170 {
1171 return (pdev->parent_address);
1172 }
1173
1174 uint8_t
libusb20_dev_get_parent_port(struct libusb20_device * pdev)1175 libusb20_dev_get_parent_port(struct libusb20_device *pdev)
1176 {
1177 return (pdev->parent_port);
1178 }
1179
1180 uint8_t
libusb20_dev_get_bus_number(struct libusb20_device * pdev)1181 libusb20_dev_get_bus_number(struct libusb20_device *pdev)
1182 {
1183 return (pdev->bus_number);
1184 }
1185
1186 int
libusb20_dev_get_iface_desc(struct libusb20_device * pdev,uint8_t iface_index,char * buf,uint8_t len)1187 libusb20_dev_get_iface_desc(struct libusb20_device *pdev,
1188 uint8_t iface_index, char *buf, uint8_t len)
1189 {
1190 if ((buf == NULL) || (len == 0))
1191 return (LIBUSB20_ERROR_INVALID_PARAM);
1192
1193 buf[0] = 0; /* set default string value */
1194
1195 return (pdev->beMethods->dev_get_iface_desc(
1196 pdev, iface_index, buf, len));
1197 }
1198
1199 /* USB backend operations */
1200
1201 int
libusb20_be_get_dev_quirk(struct libusb20_backend * pbe,uint16_t quirk_index,struct libusb20_quirk * pq)1202 libusb20_be_get_dev_quirk(struct libusb20_backend *pbe,
1203 uint16_t quirk_index, struct libusb20_quirk *pq)
1204 {
1205 return (pbe->methods->root_get_dev_quirk(pbe, quirk_index, pq));
1206 }
1207
1208 int
libusb20_be_get_quirk_name(struct libusb20_backend * pbe,uint16_t quirk_index,struct libusb20_quirk * pq)1209 libusb20_be_get_quirk_name(struct libusb20_backend *pbe,
1210 uint16_t quirk_index, struct libusb20_quirk *pq)
1211 {
1212 return (pbe->methods->root_get_quirk_name(pbe, quirk_index, pq));
1213 }
1214
1215 int
libusb20_be_add_dev_quirk(struct libusb20_backend * pbe,struct libusb20_quirk * pq)1216 libusb20_be_add_dev_quirk(struct libusb20_backend *pbe,
1217 struct libusb20_quirk *pq)
1218 {
1219 return (pbe->methods->root_add_dev_quirk(pbe, pq));
1220 }
1221
1222 int
libusb20_be_remove_dev_quirk(struct libusb20_backend * pbe,struct libusb20_quirk * pq)1223 libusb20_be_remove_dev_quirk(struct libusb20_backend *pbe,
1224 struct libusb20_quirk *pq)
1225 {
1226 return (pbe->methods->root_remove_dev_quirk(pbe, pq));
1227 }
1228
1229 int
libusb20_be_set_template(struct libusb20_backend * pbe,int temp)1230 libusb20_be_set_template(struct libusb20_backend *pbe, int temp)
1231 {
1232 return (pbe->methods->root_set_template(pbe, temp));
1233 }
1234
1235 int
libusb20_be_get_template(struct libusb20_backend * pbe,int * ptemp)1236 libusb20_be_get_template(struct libusb20_backend *pbe, int *ptemp)
1237 {
1238 int temp;
1239
1240 if (ptemp == NULL)
1241 ptemp = &temp;
1242
1243 return (pbe->methods->root_get_template(pbe, ptemp));
1244 }
1245
1246 struct libusb20_device *
libusb20_be_device_foreach(struct libusb20_backend * pbe,struct libusb20_device * pdev)1247 libusb20_be_device_foreach(struct libusb20_backend *pbe, struct libusb20_device *pdev)
1248 {
1249 if (pbe == NULL) {
1250 pdev = NULL;
1251 } else if (pdev == NULL) {
1252 pdev = TAILQ_FIRST(&(pbe->usb_devs));
1253 } else {
1254 pdev = TAILQ_NEXT(pdev, dev_entry);
1255 }
1256 return (pdev);
1257 }
1258
1259 struct libusb20_backend *
libusb20_be_alloc(const struct libusb20_backend_methods * methods)1260 libusb20_be_alloc(const struct libusb20_backend_methods *methods)
1261 {
1262 struct libusb20_backend *pbe;
1263
1264 pbe = malloc(sizeof(*pbe));
1265 if (pbe == NULL) {
1266 return (NULL);
1267 }
1268 memset(pbe, 0, sizeof(*pbe));
1269
1270 TAILQ_INIT(&(pbe->usb_devs));
1271
1272 pbe->methods = methods; /* set backend methods */
1273
1274 /* do the initial device scan */
1275 if (pbe->methods->init_backend) {
1276 pbe->methods->init_backend(pbe);
1277 }
1278 return (pbe);
1279 }
1280
1281 struct libusb20_backend *
libusb20_be_alloc_linux(void)1282 libusb20_be_alloc_linux(void)
1283 {
1284 return (NULL);
1285 }
1286
1287 struct libusb20_backend *
libusb20_be_alloc_ugen20(void)1288 libusb20_be_alloc_ugen20(void)
1289 {
1290 return (libusb20_be_alloc(&libusb20_ugen20_backend));
1291 }
1292
1293 struct libusb20_backend *
libusb20_be_alloc_default(void)1294 libusb20_be_alloc_default(void)
1295 {
1296 struct libusb20_backend *pbe;
1297
1298 #ifdef __linux__
1299 pbe = libusb20_be_alloc_linux();
1300 if (pbe) {
1301 return (pbe);
1302 }
1303 #endif
1304 pbe = libusb20_be_alloc_ugen20();
1305 if (pbe) {
1306 return (pbe);
1307 }
1308 return (NULL); /* no backend found */
1309 }
1310
1311 void
libusb20_be_free(struct libusb20_backend * pbe)1312 libusb20_be_free(struct libusb20_backend *pbe)
1313 {
1314 struct libusb20_device *pdev;
1315
1316 if (pbe == NULL) {
1317 /* be NULL safe */
1318 return;
1319 }
1320 while ((pdev = libusb20_be_device_foreach(pbe, NULL))) {
1321 libusb20_be_dequeue_device(pbe, pdev);
1322 libusb20_dev_free(pdev);
1323 }
1324 if (pbe->methods->exit_backend) {
1325 pbe->methods->exit_backend(pbe);
1326 }
1327 /* free backend */
1328 free(pbe);
1329 }
1330
1331 void
libusb20_be_enqueue_device(struct libusb20_backend * pbe,struct libusb20_device * pdev)1332 libusb20_be_enqueue_device(struct libusb20_backend *pbe, struct libusb20_device *pdev)
1333 {
1334 pdev->beMethods = pbe->methods; /* copy backend methods */
1335 TAILQ_INSERT_TAIL(&(pbe->usb_devs), pdev, dev_entry);
1336 }
1337
1338 void
libusb20_be_dequeue_device(struct libusb20_backend * pbe,struct libusb20_device * pdev)1339 libusb20_be_dequeue_device(struct libusb20_backend *pbe,
1340 struct libusb20_device *pdev)
1341 {
1342 TAILQ_REMOVE(&(pbe->usb_devs), pdev, dev_entry);
1343 }
1344
1345 const char *
libusb20_strerror(int code)1346 libusb20_strerror(int code)
1347 {
1348 switch (code) {
1349 case LIBUSB20_SUCCESS:
1350 return ("Success");
1351 case LIBUSB20_ERROR_IO:
1352 return ("I/O error");
1353 case LIBUSB20_ERROR_INVALID_PARAM:
1354 return ("Invalid parameter");
1355 case LIBUSB20_ERROR_ACCESS:
1356 return ("Permissions error");
1357 case LIBUSB20_ERROR_NO_DEVICE:
1358 return ("No device");
1359 case LIBUSB20_ERROR_NOT_FOUND:
1360 return ("Not found");
1361 case LIBUSB20_ERROR_BUSY:
1362 return ("Device busy");
1363 case LIBUSB20_ERROR_TIMEOUT:
1364 return ("Timeout");
1365 case LIBUSB20_ERROR_OVERFLOW:
1366 return ("Overflow");
1367 case LIBUSB20_ERROR_PIPE:
1368 return ("Pipe error");
1369 case LIBUSB20_ERROR_INTERRUPTED:
1370 return ("Interrupted");
1371 case LIBUSB20_ERROR_NO_MEM:
1372 return ("Out of memory");
1373 case LIBUSB20_ERROR_NOT_SUPPORTED:
1374 return ("Not supported");
1375 case LIBUSB20_ERROR_OTHER:
1376 return ("Other error");
1377 default:
1378 return ("Unknown error");
1379 }
1380 }
1381
1382 const char *
libusb20_error_name(int code)1383 libusb20_error_name(int code)
1384 {
1385 switch (code) {
1386 case LIBUSB20_SUCCESS:
1387 return ("LIBUSB20_SUCCESS");
1388 case LIBUSB20_ERROR_IO:
1389 return ("LIBUSB20_ERROR_IO");
1390 case LIBUSB20_ERROR_INVALID_PARAM:
1391 return ("LIBUSB20_ERROR_INVALID_PARAM");
1392 case LIBUSB20_ERROR_ACCESS:
1393 return ("LIBUSB20_ERROR_ACCESS");
1394 case LIBUSB20_ERROR_NO_DEVICE:
1395 return ("LIBUSB20_ERROR_NO_DEVICE");
1396 case LIBUSB20_ERROR_NOT_FOUND:
1397 return ("LIBUSB20_ERROR_NOT_FOUND");
1398 case LIBUSB20_ERROR_BUSY:
1399 return ("LIBUSB20_ERROR_BUSY");
1400 case LIBUSB20_ERROR_TIMEOUT:
1401 return ("LIBUSB20_ERROR_TIMEOUT");
1402 case LIBUSB20_ERROR_OVERFLOW:
1403 return ("LIBUSB20_ERROR_OVERFLOW");
1404 case LIBUSB20_ERROR_PIPE:
1405 return ("LIBUSB20_ERROR_PIPE");
1406 case LIBUSB20_ERROR_INTERRUPTED:
1407 return ("LIBUSB20_ERROR_INTERRUPTED");
1408 case LIBUSB20_ERROR_NO_MEM:
1409 return ("LIBUSB20_ERROR_NO_MEM");
1410 case LIBUSB20_ERROR_NOT_SUPPORTED:
1411 return ("LIBUSB20_ERROR_NOT_SUPPORTED");
1412 case LIBUSB20_ERROR_OTHER:
1413 return ("LIBUSB20_ERROR_OTHER");
1414 default:
1415 return ("LIBUSB20_ERROR_UNKNOWN");
1416 }
1417 }
1418