3 * Copyright (c) 2008-2009 Hans Petter Selasky. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include <sys/queue.h>
35 #include "libusb20_desc.h"
36 #include "libusb20_int.h"
41 return (LIBUSB20_ERROR_NOT_SUPPORTED);
51 dummy_callback(struct libusb20_transfer *xfer)
54 switch (libusb20_tr_get_status(xfer)) {
55 case LIBUSB20_TRANSFER_START:
56 libusb20_tr_submit(xfer);
59 /* complete or error */
65 #define dummy_get_config_desc_full (void *)dummy_int
66 #define dummy_get_config_index (void *)dummy_int
67 #define dummy_set_config_index (void *)dummy_int
68 #define dummy_set_alt_index (void *)dummy_int
69 #define dummy_reset_device (void *)dummy_int
70 #define dummy_check_connected (void *)dummy_int
71 #define dummy_set_power_mode (void *)dummy_int
72 #define dummy_get_power_mode (void *)dummy_int
73 #define dummy_kernel_driver_active (void *)dummy_int
74 #define dummy_detach_kernel_driver (void *)dummy_int
75 #define dummy_do_request_sync (void *)dummy_int
76 #define dummy_tr_open (void *)dummy_int
77 #define dummy_tr_close (void *)dummy_int
78 #define dummy_tr_clear_stall_sync (void *)dummy_int
79 #define dummy_process (void *)dummy_int
80 #define dummy_dev_info (void *)dummy_int
81 #define dummy_dev_get_iface_driver (void *)dummy_int
83 #define dummy_tr_submit (void *)dummy_void
84 #define dummy_tr_cancel_async (void *)dummy_void
86 static const struct libusb20_device_methods libusb20_dummy_methods = {
87 LIBUSB20_DEVICE(LIBUSB20_DECLARE, dummy)
91 libusb20_tr_callback_wrapper(struct libusb20_transfer *xfer)
97 if (!xfer->is_pending) {
98 xfer->status = LIBUSB20_TRANSFER_START;
100 xfer->is_pending = 0;
103 xfer->callback(xfer);
105 if (xfer->is_restart) {
106 xfer->is_restart = 0;
109 if (xfer->is_draining &&
110 (!xfer->is_pending)) {
111 xfer->is_draining = 0;
112 xfer->status = LIBUSB20_TRANSFER_DRAINED;
113 xfer->callback(xfer);
119 libusb20_tr_close(struct libusb20_transfer *xfer)
123 if (!xfer->is_opened) {
124 return (LIBUSB20_ERROR_OTHER);
126 error = xfer->pdev->methods->tr_close(xfer);
131 if (xfer->ppBuffer) {
132 free(xfer->ppBuffer);
134 /* reset variable fields in case the transfer is opened again */
138 xfer->is_pending = 0;
140 xfer->is_draining = 0;
141 xfer->is_restart = 0;
148 xfer->maxTotalLength = 0;
149 xfer->maxPacketLen = 0;
154 libusb20_tr_open(struct libusb20_transfer *xfer, uint32_t MaxBufSize,
155 uint32_t MaxFrameCount, uint8_t ep_no)
160 if (xfer->is_opened) {
161 return (LIBUSB20_ERROR_BUSY);
163 if (MaxFrameCount == 0) {
164 return (LIBUSB20_ERROR_INVALID_PARAM);
166 xfer->maxFrames = MaxFrameCount;
168 size = MaxFrameCount * sizeof(xfer->pLength[0]);
169 xfer->pLength = malloc(size);
170 if (xfer->pLength == NULL) {
171 return (LIBUSB20_ERROR_NO_MEM);
173 memset(xfer->pLength, 0, size);
175 size = MaxFrameCount * sizeof(xfer->ppBuffer[0]);
176 xfer->ppBuffer = malloc(size);
177 if (xfer->ppBuffer == NULL) {
179 return (LIBUSB20_ERROR_NO_MEM);
181 memset(xfer->ppBuffer, 0, size);
183 error = xfer->pdev->methods->tr_open(xfer, MaxBufSize,
184 MaxFrameCount, ep_no);
187 free(xfer->ppBuffer);
195 struct libusb20_transfer *
196 libusb20_tr_get_pointer(struct libusb20_device *pdev, uint16_t trIndex)
198 if (trIndex >= pdev->nTransfer) {
201 return (pdev->pTransfer + trIndex);
205 libusb20_tr_get_actual_frames(struct libusb20_transfer *xfer)
207 return (xfer->aFrames);
211 libusb20_tr_get_time_complete(struct libusb20_transfer *xfer)
213 return (xfer->timeComplete);
217 libusb20_tr_get_actual_length(struct libusb20_transfer *xfer)
222 for (x = 0; x != xfer->aFrames; x++) {
223 actlen += xfer->pLength[x];
229 libusb20_tr_get_max_frames(struct libusb20_transfer *xfer)
231 return (xfer->maxFrames);
235 libusb20_tr_get_max_packet_length(struct libusb20_transfer *xfer)
238 * Special Case NOTE: If the packet multiplier is non-zero for
239 * High Speed USB, the value returned is equal to
240 * "wMaxPacketSize * multiplier" !
242 return (xfer->maxPacketLen);
246 libusb20_tr_get_max_total_length(struct libusb20_transfer *xfer)
248 return (xfer->maxTotalLength);
252 libusb20_tr_get_status(struct libusb20_transfer *xfer)
254 return (xfer->status);
258 libusb20_tr_pending(struct libusb20_transfer *xfer)
260 return (xfer->is_pending);
264 libusb20_tr_get_priv_sc0(struct libusb20_transfer *xfer)
266 return (xfer->priv_sc0);
270 libusb20_tr_get_priv_sc1(struct libusb20_transfer *xfer)
272 return (xfer->priv_sc1);
276 libusb20_tr_stop(struct libusb20_transfer *xfer)
278 if (!xfer->is_opened) {
279 /* transfer is not opened */
282 if (!xfer->is_pending) {
283 /* transfer not pending */
286 if (xfer->is_cancel) {
287 /* already cancelling */
290 xfer->is_cancel = 1; /* we are cancelling */
292 xfer->pdev->methods->tr_cancel_async(xfer);
297 libusb20_tr_drain(struct libusb20_transfer *xfer)
299 if (!xfer->is_opened) {
300 /* transfer is not opened */
303 /* make sure that we are cancelling */
304 libusb20_tr_stop(xfer);
306 if (xfer->is_pending) {
307 xfer->is_draining = 1;
313 libusb20_tr_clear_stall_sync(struct libusb20_transfer *xfer)
315 xfer->pdev->methods->tr_clear_stall_sync(xfer);
320 libusb20_tr_set_buffer(struct libusb20_transfer *xfer, void *buffer, uint16_t frIndex)
322 xfer->ppBuffer[frIndex] = buffer;
327 libusb20_tr_set_callback(struct libusb20_transfer *xfer, libusb20_tr_callback_t *cb)
334 libusb20_tr_set_flags(struct libusb20_transfer *xfer, uint8_t flags)
341 libusb20_tr_get_length(struct libusb20_transfer *xfer, uint16_t frIndex)
343 return (xfer->pLength[frIndex]);
347 libusb20_tr_set_length(struct libusb20_transfer *xfer, uint32_t length, uint16_t frIndex)
349 xfer->pLength[frIndex] = length;
354 libusb20_tr_set_priv_sc0(struct libusb20_transfer *xfer, void *sc0)
356 xfer->priv_sc0 = sc0;
361 libusb20_tr_set_priv_sc1(struct libusb20_transfer *xfer, void *sc1)
363 xfer->priv_sc1 = sc1;
368 libusb20_tr_set_timeout(struct libusb20_transfer *xfer, uint32_t timeout)
370 xfer->timeout = timeout;
375 libusb20_tr_set_total_frames(struct libusb20_transfer *xfer, uint32_t nFrames)
377 if (nFrames > xfer->maxFrames) {
378 /* should not happen */
379 nFrames = xfer->maxFrames;
381 xfer->nFrames = nFrames;
386 libusb20_tr_setup_bulk(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint32_t timeout)
388 xfer->ppBuffer[0] = pBuf;
389 xfer->pLength[0] = length;
390 xfer->timeout = timeout;
396 libusb20_tr_setup_control(struct libusb20_transfer *xfer, void *psetup, void *pBuf, uint32_t timeout)
400 xfer->ppBuffer[0] = psetup;
401 xfer->pLength[0] = 8; /* fixed */
402 xfer->timeout = timeout;
404 len = ((uint8_t *)psetup)[6] | (((uint8_t *)psetup)[7] << 8);
408 xfer->ppBuffer[1] = pBuf;
409 xfer->pLength[1] = len;
417 libusb20_tr_setup_intr(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint32_t timeout)
419 xfer->ppBuffer[0] = pBuf;
420 xfer->pLength[0] = length;
421 xfer->timeout = timeout;
427 libusb20_tr_setup_isoc(struct libusb20_transfer *xfer, void *pBuf, uint32_t length, uint16_t frIndex)
429 if (frIndex >= xfer->maxFrames) {
430 /* should not happen */
433 xfer->ppBuffer[frIndex] = pBuf;
434 xfer->pLength[frIndex] = length;
439 libusb20_tr_bulk_intr_sync(struct libusb20_transfer *xfer,
440 void *pbuf, uint32_t length, uint32_t *pactlen,
443 struct libusb20_device *pdev = xfer->pdev;
444 uint32_t transfer_max;
445 uint32_t transfer_act;
448 /* set some sensible default value */
452 /* check for error condition */
453 if (libusb20_tr_pending(xfer))
454 return (LIBUSB20_ERROR_OTHER);
457 /* compute maximum transfer length */
459 libusb20_tr_get_max_total_length(xfer);
461 if (transfer_max > length)
462 transfer_max = length;
464 /* setup bulk or interrupt transfer */
465 libusb20_tr_setup_bulk(xfer, pbuf,
466 transfer_max, timeout);
468 /* start the transfer */
469 libusb20_tr_start(xfer);
471 /* wait for transfer completion */
472 while (libusb20_dev_process(pdev) == 0) {
474 if (libusb20_tr_pending(xfer) == 0)
477 libusb20_dev_wait_process(pdev, -1);
480 transfer_act = libusb20_tr_get_actual_length(xfer);
482 /* update actual length, if any */
484 pactlen[0] += transfer_act;
486 /* check transfer status */
487 retval = libusb20_tr_get_status(xfer);
491 /* check for short transfer */
492 if (transfer_act != transfer_max)
495 /* update buffer pointer and length */
496 pbuf = ((uint8_t *)pbuf) + transfer_max;
497 length = length - transfer_max;
499 } while (length != 0);
505 libusb20_tr_submit(struct libusb20_transfer *xfer)
507 if (!xfer->is_opened) {
508 /* transfer is not opened */
511 if (xfer->is_pending) {
512 /* should not happen */
515 xfer->is_pending = 1; /* we are pending */
516 xfer->is_cancel = 0; /* not cancelling */
517 xfer->is_restart = 0; /* not restarting */
519 xfer->pdev->methods->tr_submit(xfer);
524 libusb20_tr_start(struct libusb20_transfer *xfer)
526 if (!xfer->is_opened) {
527 /* transfer is not opened */
530 if (xfer->is_pending) {
531 if (xfer->is_cancel) {
532 /* cancelling - restart */
533 xfer->is_restart = 1;
535 /* transfer not pending */
538 /* get into the callback */
539 libusb20_tr_callback_wrapper(xfer);
543 /* USB device operations */
546 libusb20_dev_close(struct libusb20_device *pdev)
548 struct libusb20_transfer *xfer;
552 if (!pdev->is_opened) {
553 return (LIBUSB20_ERROR_OTHER);
555 for (x = 0; x != pdev->nTransfer; x++) {
556 xfer = pdev->pTransfer + x;
558 if (!xfer->is_opened) {
559 /* transfer is not opened */
563 libusb20_tr_drain(xfer);
565 libusb20_tr_close(xfer);
568 if (pdev->pTransfer != NULL) {
569 free(pdev->pTransfer);
570 pdev->pTransfer = NULL;
572 error = pdev->beMethods->close_device(pdev);
574 pdev->methods = &libusb20_dummy_methods;
579 * The following variable is only used by the libusb v0.1
582 pdev->claimed_interface = 0;
588 libusb20_dev_detach_kernel_driver(struct libusb20_device *pdev, uint8_t ifaceIndex)
592 error = pdev->methods->detach_kernel_driver(pdev, ifaceIndex);
596 struct LIBUSB20_DEVICE_DESC_DECODED *
597 libusb20_dev_get_device_desc(struct libusb20_device *pdev)
599 return (&(pdev->ddesc));
603 libusb20_dev_get_fd(struct libusb20_device *pdev)
609 libusb20_dev_kernel_driver_active(struct libusb20_device *pdev, uint8_t ifaceIndex)
613 error = pdev->methods->kernel_driver_active(pdev, ifaceIndex);
618 libusb20_dev_open(struct libusb20_device *pdev, uint16_t nTransferMax)
620 struct libusb20_transfer *xfer;
625 if (pdev->is_opened) {
626 return (LIBUSB20_ERROR_BUSY);
628 if (nTransferMax >= 256) {
629 return (LIBUSB20_ERROR_INVALID_PARAM);
630 } else if (nTransferMax != 0) {
631 size = sizeof(pdev->pTransfer[0]) * nTransferMax;
632 pdev->pTransfer = malloc(size);
633 if (pdev->pTransfer == NULL) {
634 return (LIBUSB20_ERROR_NO_MEM);
636 memset(pdev->pTransfer, 0, size);
638 /* initialise all transfers */
639 for (x = 0; x != nTransferMax; x++) {
641 xfer = pdev->pTransfer + x;
645 xfer->callback = &dummy_callback;
648 /* set "nTransfer" early */
649 pdev->nTransfer = nTransferMax;
651 error = pdev->beMethods->open_device(pdev, nTransferMax);
654 if (pdev->pTransfer != NULL) {
655 free(pdev->pTransfer);
656 pdev->pTransfer = NULL;
659 pdev->file_ctrl = -1;
668 libusb20_dev_reset(struct libusb20_device *pdev)
672 error = pdev->methods->reset_device(pdev);
677 libusb20_dev_check_connected(struct libusb20_device *pdev)
681 error = pdev->methods->check_connected(pdev);
686 libusb20_dev_set_power_mode(struct libusb20_device *pdev, uint8_t power_mode)
690 error = pdev->methods->set_power_mode(pdev, power_mode);
695 libusb20_dev_get_power_mode(struct libusb20_device *pdev)
700 error = pdev->methods->get_power_mode(pdev, &power_mode);
702 power_mode = LIBUSB20_POWER_ON; /* fake power mode */
707 libusb20_dev_set_alt_index(struct libusb20_device *pdev, uint8_t ifaceIndex, uint8_t altIndex)
711 error = pdev->methods->set_alt_index(pdev, ifaceIndex, altIndex);
716 libusb20_dev_set_config_index(struct libusb20_device *pdev, uint8_t configIndex)
720 error = pdev->methods->set_config_index(pdev, configIndex);
725 libusb20_dev_request_sync(struct libusb20_device *pdev,
726 struct LIBUSB20_CONTROL_SETUP_DECODED *setup, void *data,
727 uint16_t *pactlen, uint32_t timeout, uint8_t flags)
731 error = pdev->methods->do_request_sync(pdev,
732 setup, data, pactlen, timeout, flags);
737 libusb20_dev_req_string_sync(struct libusb20_device *pdev,
738 uint8_t str_index, uint16_t langid, void *ptr, uint16_t len)
740 struct LIBUSB20_CONTROL_SETUP_DECODED req;
743 /* make sure memory is initialised */
748 return (LIBUSB20_ERROR_INVALID_PARAM);
750 LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &req);
753 * We need to read the USB string in two steps else some USB
754 * devices will complain.
757 LIBUSB20_REQUEST_TYPE_STANDARD |
758 LIBUSB20_RECIPIENT_DEVICE |
759 LIBUSB20_ENDPOINT_IN;
760 req.bRequest = LIBUSB20_REQUEST_GET_DESCRIPTOR;
761 req.wValue = (LIBUSB20_DT_STRING << 8) | str_index;
763 req.wLength = 4; /* bytes */
765 error = libusb20_dev_request_sync(pdev, &req,
766 ptr, NULL, 1000, LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK);
770 req.wLength = *(uint8_t *)ptr; /* bytes */
771 if (req.wLength > len) {
772 /* partial string read */
775 error = libusb20_dev_request_sync(pdev, &req,
776 ptr, NULL, 1000, LIBUSB20_TRANSFER_SINGLE_SHORT_NOT_OK);
781 if (((uint8_t *)ptr)[1] != LIBUSB20_DT_STRING) {
782 return (LIBUSB20_ERROR_OTHER);
784 return (0); /* success */
788 libusb20_dev_req_string_simple_sync(struct libusb20_device *pdev,
789 uint8_t str_index, void *ptr, uint16_t len)
800 /* the following code derives from the FreeBSD USB kernel */
802 if ((len < 1) || (ptr == NULL)) {
803 /* too short buffer */
804 return (LIBUSB20_ERROR_INVALID_PARAM);
806 error = libusb20_dev_req_string_sync(pdev,
807 0, 0, temp, sizeof(temp));
809 *(uint8_t *)ptr = 0; /* zero terminate */
812 langid = temp[2] | (temp[3] << 8);
814 error = libusb20_dev_req_string_sync(pdev, str_index,
815 langid, temp, sizeof(temp));
817 *(uint8_t *)ptr = 0; /* zero terminate */
821 /* string length is too short */
822 *(uint8_t *)ptr = 0; /* zero terminate */
823 return (LIBUSB20_ERROR_OTHER);
825 /* reserve one byte for terminating zero */
828 /* find maximum length */
829 n = (temp[0] / 2) - 1;
833 /* reset swap state */
836 /* setup output buffer pointer */
839 /* convert and filter */
840 for (i = 0; (i != n); i++) {
841 c = temp[(2 * i) + 2] | (temp[(2 * i) + 3] << 8);
843 /* convert from Unicode, handle buggy strings */
844 if (((c & 0xff00) == 0) && (swap & 1)) {
845 /* Little Endian, default */
848 } else if (((c & 0x00ff) == 0) && (swap & 2)) {
853 /* skip invalid character */
857 * Filter by default - we don't allow greater and less than
858 * signs because they might confuse the dmesg printouts!
860 if ((*buf == '<') || (*buf == '>') || (!isprint(*buf))) {
861 /* skip invalid character */
866 *buf = 0; /* zero terminate string */
871 struct libusb20_config *
872 libusb20_dev_alloc_config(struct libusb20_device *pdev, uint8_t configIndex)
874 struct libusb20_config *retval = NULL;
880 if (!pdev->is_opened) {
881 error = libusb20_dev_open(pdev, 0);
889 error = pdev->methods->get_config_desc_full(pdev,
890 &ptr, &len, configIndex);
895 /* parse new config descriptor */
896 retval = libusb20_parse_config_desc(ptr);
898 /* free config descriptor */
903 error = libusb20_dev_close(pdev);
908 struct libusb20_device *
909 libusb20_dev_alloc(void)
911 struct libusb20_device *pdev;
913 pdev = malloc(sizeof(*pdev));
917 memset(pdev, 0, sizeof(*pdev));
920 pdev->file_ctrl = -1;
921 pdev->methods = &libusb20_dummy_methods;
926 libusb20_dev_get_config_index(struct libusb20_device *pdev)
932 if (!pdev->is_opened) {
933 error = libusb20_dev_open(pdev, 0);
943 error = pdev->methods->get_config_index(pdev, &cfg_index);
945 cfg_index = 0 - 1; /* current config index */
948 if (libusb20_dev_close(pdev)) {
956 libusb20_dev_get_mode(struct libusb20_device *pdev)
958 return (pdev->usb_mode);
962 libusb20_dev_get_speed(struct libusb20_device *pdev)
964 return (pdev->usb_speed);
967 /* if this function returns an error, the device is gone */
969 libusb20_dev_process(struct libusb20_device *pdev)
973 error = pdev->methods->process(pdev);
978 libusb20_dev_wait_process(struct libusb20_device *pdev, int timeout)
980 struct pollfd pfd[1];
982 if (!pdev->is_opened) {
985 pfd[0].fd = pdev->file;
986 pfd[0].events = (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM);
989 if (poll(pfd, 1, timeout)) {
990 /* ignore any error */
996 libusb20_dev_free(struct libusb20_device *pdev)
1002 if (pdev->is_opened) {
1003 if (libusb20_dev_close(pdev)) {
1004 /* ignore any errors */
1012 libusb20_dev_get_info(struct libusb20_device *pdev,
1013 struct usb_device_info *pinfo)
1016 return (LIBUSB20_ERROR_INVALID_PARAM);
1018 return (pdev->beMethods->dev_get_info(pdev, pinfo));
1022 libusb20_dev_get_backend_name(struct libusb20_device *pdev)
1024 return (pdev->beMethods->get_backend_name());
1028 libusb20_dev_get_desc(struct libusb20_device *pdev)
1030 return (pdev->usb_desc);
1034 libusb20_dev_set_debug(struct libusb20_device *pdev, int debug)
1036 pdev->debug = debug;
1041 libusb20_dev_get_debug(struct libusb20_device *pdev)
1043 return (pdev->debug);
1047 libusb20_dev_get_address(struct libusb20_device *pdev)
1049 return (pdev->device_address);
1053 libusb20_dev_get_bus_number(struct libusb20_device *pdev)
1055 return (pdev->bus_number);
1059 libusb20_dev_get_iface_desc(struct libusb20_device *pdev,
1060 uint8_t iface_index, char *buf, uint8_t len)
1062 if ((buf == NULL) || (len == 0))
1063 return (LIBUSB20_ERROR_INVALID_PARAM);
1065 return (pdev->beMethods->dev_get_iface_desc(
1066 pdev, iface_index, buf, len));
1069 /* USB backend operations */
1072 libusb20_be_get_dev_quirk(struct libusb20_backend *pbe,
1073 uint16_t quirk_index, struct libusb20_quirk *pq)
1075 return (pbe->methods->root_get_dev_quirk(pbe, quirk_index, pq));
1079 libusb20_be_get_quirk_name(struct libusb20_backend *pbe,
1080 uint16_t quirk_index, struct libusb20_quirk *pq)
1082 return (pbe->methods->root_get_quirk_name(pbe, quirk_index, pq));
1086 libusb20_be_add_dev_quirk(struct libusb20_backend *pbe,
1087 struct libusb20_quirk *pq)
1089 return (pbe->methods->root_add_dev_quirk(pbe, pq));
1093 libusb20_be_remove_dev_quirk(struct libusb20_backend *pbe,
1094 struct libusb20_quirk *pq)
1096 return (pbe->methods->root_remove_dev_quirk(pbe, pq));
1100 libusb20_be_set_template(struct libusb20_backend *pbe, int temp)
1102 return (pbe->methods->root_set_template(pbe, temp));
1106 libusb20_be_get_template(struct libusb20_backend *pbe, int *ptemp)
1113 return (pbe->methods->root_get_template(pbe, ptemp));
1116 struct libusb20_device *
1117 libusb20_be_device_foreach(struct libusb20_backend *pbe, struct libusb20_device *pdev)
1121 } else if (pdev == NULL) {
1122 pdev = TAILQ_FIRST(&(pbe->usb_devs));
1124 pdev = TAILQ_NEXT(pdev, dev_entry);
1129 struct libusb20_backend *
1130 libusb20_be_alloc(const struct libusb20_backend_methods *methods)
1132 struct libusb20_backend *pbe;
1134 pbe = malloc(sizeof(*pbe));
1138 memset(pbe, 0, sizeof(*pbe));
1140 TAILQ_INIT(&(pbe->usb_devs));
1142 pbe->methods = methods; /* set backend methods */
1144 /* do the initial device scan */
1145 if (pbe->methods->init_backend) {
1146 pbe->methods->init_backend(pbe);
1151 struct libusb20_backend *
1152 libusb20_be_alloc_linux(void)
1154 struct libusb20_backend *pbe;
1157 pbe = libusb20_be_alloc(&libusb20_linux_backend);
1164 struct libusb20_backend *
1165 libusb20_be_alloc_ugen20(void)
1167 struct libusb20_backend *pbe;
1170 pbe = libusb20_be_alloc(&libusb20_ugen20_backend);
1177 struct libusb20_backend *
1178 libusb20_be_alloc_default(void)
1180 struct libusb20_backend *pbe;
1182 pbe = libusb20_be_alloc_linux();
1186 pbe = libusb20_be_alloc_ugen20();
1190 return (NULL); /* no backend found */
1194 libusb20_be_free(struct libusb20_backend *pbe)
1196 struct libusb20_device *pdev;
1202 while ((pdev = libusb20_be_device_foreach(pbe, NULL))) {
1203 libusb20_be_dequeue_device(pbe, pdev);
1204 libusb20_dev_free(pdev);
1206 if (pbe->methods->exit_backend) {
1207 pbe->methods->exit_backend(pbe);
1214 libusb20_be_enqueue_device(struct libusb20_backend *pbe, struct libusb20_device *pdev)
1216 pdev->beMethods = pbe->methods; /* copy backend methods */
1217 TAILQ_INSERT_TAIL(&(pbe->usb_devs), pdev, dev_entry);
1221 libusb20_be_dequeue_device(struct libusb20_backend *pbe,
1222 struct libusb20_device *pdev)
1224 TAILQ_REMOVE(&(pbe->usb_devs), pdev, dev_entry);