3 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
4 * Copyright (c) 2009 Hans Petter Selasky. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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.
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
28 #include <sys/fcntl.h>
29 #include <sys/ioctl.h>
30 #include <sys/queue.h>
40 #define libusb_device_handle libusb20_device
43 #include "libusb20_desc.h"
44 #include "libusb20_int.h"
48 static pthread_mutex_t default_context_lock = PTHREAD_MUTEX_INITIALIZER;
49 struct libusb_context *usbi_default_context = NULL;
53 static struct libusb20_transfer *libusb10_get_transfer(struct libusb20_device *, uint8_t, uint8_t);
54 static int libusb10_get_maxframe(struct libusb20_device *, libusb_transfer *);
55 static int libusb10_get_buffsize(struct libusb20_device *, libusb_transfer *);
56 static int libusb10_convert_error(uint8_t status);
57 static void libusb10_complete_transfer(struct libusb20_transfer *, struct libusb_super_transfer *, int);
58 static void libusb10_isoc_proxy(struct libusb20_transfer *);
59 static void libusb10_bulk_intr_proxy(struct libusb20_transfer *);
60 static void libusb10_ctrl_proxy(struct libusb20_transfer *);
61 static void libusb10_submit_transfer_sub(struct libusb20_device *, uint8_t);
63 /* Library initialisation / deinitialisation */
66 libusb_set_debug(libusb_context *ctx, int level)
68 ctx = GET_CONTEXT(ctx);
74 libusb_set_nonblocking(int f)
79 * We ignore any failures in this function, hence the
80 * non-blocking flag is not critical to the operation of
81 * libUSB. We use F_GETFL and F_SETFL to be compatible with
85 flags = fcntl(f, F_GETFL, NULL);
89 fcntl(f, F_SETFL, flags);
93 libusb_init(libusb_context **context)
95 struct libusb_context *ctx;
99 ctx = malloc(sizeof(*ctx));
101 return (LIBUSB_ERROR_INVALID_PARAM);
103 memset(ctx, 0, sizeof(*ctx));
105 debug = getenv("LIBUSB_DEBUG");
107 ctx->debug = atoi(debug);
109 ctx->debug_fixed = 1;
111 TAILQ_INIT(&ctx->pollfds);
112 TAILQ_INIT(&ctx->tr_done);
114 pthread_mutex_init(&ctx->ctx_lock, NULL);
115 pthread_cond_init(&ctx->ctx_cond, NULL);
117 ctx->ctx_handler = NO_THREAD;
119 ret = pipe(ctx->ctrl_pipe);
121 pthread_mutex_destroy(&ctx->ctx_lock);
122 pthread_cond_destroy(&ctx->ctx_cond);
124 return (LIBUSB_ERROR_OTHER);
126 /* set non-blocking mode on the control pipe to avoid deadlock */
127 libusb_set_nonblocking(ctx->ctrl_pipe[0]);
128 libusb_set_nonblocking(ctx->ctrl_pipe[1]);
130 libusb10_add_pollfd(ctx, &ctx->ctx_poll, NULL, ctx->ctrl_pipe[0], POLLIN);
132 pthread_mutex_lock(&default_context_lock);
133 if (usbi_default_context == NULL) {
134 usbi_default_context = ctx;
136 pthread_mutex_unlock(&default_context_lock);
141 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_init complete");
147 libusb_exit(libusb_context *ctx)
149 ctx = GET_CONTEXT(ctx);
154 /* XXX cleanup devices */
156 libusb10_remove_pollfd(ctx, &ctx->ctx_poll);
157 close(ctx->ctrl_pipe[0]);
158 close(ctx->ctrl_pipe[1]);
159 pthread_mutex_destroy(&ctx->ctx_lock);
160 pthread_cond_destroy(&ctx->ctx_cond);
162 pthread_mutex_lock(&default_context_lock);
163 if (ctx == usbi_default_context) {
164 usbi_default_context = NULL;
166 pthread_mutex_unlock(&default_context_lock);
171 /* Device handling and initialisation. */
174 libusb_get_device_list(libusb_context *ctx, libusb_device ***list)
176 struct libusb20_backend *usb_backend;
177 struct libusb20_device *pdev;
178 struct libusb_device *dev;
181 ctx = GET_CONTEXT(ctx);
184 return (LIBUSB_ERROR_INVALID_PARAM);
187 return (LIBUSB_ERROR_INVALID_PARAM);
189 usb_backend = libusb20_be_alloc_default();
190 if (usb_backend == NULL)
191 return (LIBUSB_ERROR_NO_MEM);
193 /* figure out how many USB devices are present */
196 while ((pdev = libusb20_be_device_foreach(usb_backend, pdev)))
199 /* allocate device pointer list */
200 *list = malloc((i + 1) * sizeof(void *));
202 libusb20_be_free(usb_backend);
203 return (LIBUSB_ERROR_NO_MEM);
205 /* create libusb v1.0 compliant devices */
207 while ((pdev = libusb20_be_device_foreach(usb_backend, NULL))) {
209 dev = malloc(sizeof(*dev));
212 libusb_unref_device((*list)[i - 1]);
217 libusb20_be_free(usb_backend);
218 return (LIBUSB_ERROR_NO_MEM);
221 /* get device into libUSB v1.0 list */
222 libusb20_be_dequeue_device(usb_backend, pdev);
224 memset(dev, 0, sizeof(*dev));
226 /* init transfer queues */
227 TAILQ_INIT(&dev->tr_head);
229 /* set context we belong to */
232 /* link together the two structures */
234 pdev->privLuData = dev;
236 (*list)[i] = libusb_ref_device(dev);
241 libusb20_be_free(usb_backend);
246 libusb_free_device_list(libusb_device **list, int unref_devices)
251 return; /* be NULL safe */
254 for (i = 0; list[i] != NULL; i++)
255 libusb_unref_device(list[i]);
261 libusb_get_bus_number(libusb_device *dev)
264 return (0); /* should not happen */
265 return (libusb20_dev_get_bus_number(dev->os_priv));
269 libusb_get_device_address(libusb_device *dev)
272 return (0); /* should not happen */
273 return (libusb20_dev_get_address(dev->os_priv));
277 libusb_get_max_packet_size(libusb_device *dev, uint8_t endpoint)
279 struct libusb_config_descriptor *pdconf;
280 struct libusb_interface *pinf;
281 struct libusb_interface_descriptor *pdinf;
282 struct libusb_endpoint_descriptor *pdend;
289 return (LIBUSB_ERROR_NO_DEVICE);
291 ret = libusb_get_active_config_descriptor(dev, &pdconf);
295 ret = LIBUSB_ERROR_NOT_FOUND;
296 for (i = 0; i < pdconf->bNumInterfaces; i++) {
297 pinf = &pdconf->interface[i];
298 for (j = 0; j < pinf->num_altsetting; j++) {
299 pdinf = &pinf->altsetting[j];
300 for (k = 0; k < pdinf->bNumEndpoints; k++) {
301 pdend = &pdinf->endpoint[k];
302 if (pdend->bEndpointAddress == endpoint) {
303 ret = pdend->wMaxPacketSize;
311 libusb_free_config_descriptor(pdconf);
316 libusb_ref_device(libusb_device *dev)
319 return (NULL); /* be NULL safe */
323 CTX_UNLOCK(dev->ctx);
329 libusb_unref_device(libusb_device *dev)
332 return; /* be NULL safe */
336 CTX_UNLOCK(dev->ctx);
338 if (dev->refcnt == 0) {
339 libusb20_dev_free(dev->os_priv);
345 libusb_open(libusb_device *dev, libusb_device_handle **devh)
347 libusb_context *ctx = dev->ctx;
348 struct libusb20_device *pdev = dev->os_priv;
353 return (LIBUSB_ERROR_INVALID_PARAM);
355 /* set default device handle value */
358 dev = libusb_ref_device(dev);
360 return (LIBUSB_ERROR_INVALID_PARAM);
362 err = libusb20_dev_open(pdev, 16 * 4 /* number of endpoints */ );
364 libusb_unref_device(dev);
365 return (LIBUSB_ERROR_NO_MEM);
367 libusb10_add_pollfd(ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN |
368 POLLOUT | POLLRDNORM | POLLWRNORM);
370 /* make sure our event loop detects the new device */
372 err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy));
373 if (err < (int)sizeof(dummy)) {
374 /* ignore error, if any */
375 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open write failed!");
382 libusb_device_handle *
383 libusb_open_device_with_vid_pid(libusb_context *ctx, uint16_t vendor_id,
386 struct libusb_device **devs;
387 struct libusb20_device *pdev;
388 struct LIBUSB20_DEVICE_DESC_DECODED *pdesc;
392 ctx = GET_CONTEXT(ctx);
394 return (NULL); /* be NULL safe */
396 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid enter");
398 if ((i = libusb_get_device_list(ctx, &devs)) < 0)
401 for (j = 0; j < i; j++) {
402 pdev = devs[j]->os_priv;
403 pdesc = libusb20_dev_get_device_desc(pdev);
405 * NOTE: The USB library will automatically swap the
406 * fields in the device descriptor to be of host
409 if (pdesc->idVendor == vendor_id &&
410 pdesc->idProduct == product_id) {
411 if (libusb_open(devs[j], &pdev) < 0)
419 libusb_free_device_list(devs, 1);
420 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_open_device_width_vid_pid leave");
425 libusb_close(struct libusb20_device *pdev)
428 struct libusb_device *dev;
433 return; /* be NULL safe */
435 dev = libusb_get_device(pdev);
438 libusb10_remove_pollfd(ctx, &dev->dev_poll);
440 libusb20_dev_close(pdev);
442 /* unref will free the "pdev" when the refcount reaches zero */
443 libusb_unref_device(dev);
445 /* make sure our event loop detects the closed device */
447 err = write(ctx->ctrl_pipe[1], &dummy, sizeof(dummy));
448 if (err < (int)sizeof(dummy)) {
449 /* ignore error, if any */
450 DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_close write failed!");
455 libusb_get_device(struct libusb20_device *pdev)
459 return ((libusb_device *)pdev->privLuData);
463 libusb_get_configuration(struct libusb20_device *pdev, int *config)
465 struct libusb20_config *pconf;
467 if (pdev == NULL || config == NULL)
468 return (LIBUSB_ERROR_INVALID_PARAM);
470 pconf = libusb20_dev_alloc_config(pdev, libusb20_dev_get_config_index(pdev));
472 return (LIBUSB_ERROR_NO_MEM);
474 *config = pconf->desc.bConfigurationValue;
482 libusb_set_configuration(struct libusb20_device *pdev, int configuration)
484 struct libusb20_config *pconf;
485 struct libusb_device *dev;
489 dev = libusb_get_device(pdev);
491 return (LIBUSB_ERROR_INVALID_PARAM);
493 if (configuration < 1) {
497 for (i = 0; i != 255; i++) {
500 pconf = libusb20_dev_alloc_config(pdev, i);
502 return (LIBUSB_ERROR_INVALID_PARAM);
503 found = (pconf->desc.bConfigurationValue
510 return (LIBUSB_ERROR_INVALID_PARAM);
515 libusb10_cancel_all_transfer(dev);
517 libusb10_remove_pollfd(dev->ctx, &dev->dev_poll);
519 err = libusb20_dev_set_config_index(pdev, i);
521 libusb10_add_pollfd(dev->ctx, &dev->dev_poll, pdev, libusb20_dev_get_fd(pdev), POLLIN |
522 POLLOUT | POLLRDNORM | POLLWRNORM);
524 return (err ? LIBUSB_ERROR_INVALID_PARAM : 0);
528 libusb_claim_interface(struct libusb20_device *pdev, int interface_number)
533 dev = libusb_get_device(pdev);
535 return (LIBUSB_ERROR_INVALID_PARAM);
537 if (interface_number < 0 || interface_number > 31)
538 return (LIBUSB_ERROR_INVALID_PARAM);
541 if (dev->claimed_interfaces & (1 << interface_number))
542 err = LIBUSB_ERROR_BUSY;
545 dev->claimed_interfaces |= (1 << interface_number);
546 CTX_UNLOCK(dev->ctx);
551 libusb_release_interface(struct libusb20_device *pdev, int interface_number)
556 dev = libusb_get_device(pdev);
558 return (LIBUSB_ERROR_INVALID_PARAM);
560 if (interface_number < 0 || interface_number > 31)
561 return (LIBUSB_ERROR_INVALID_PARAM);
564 if (!(dev->claimed_interfaces & (1 << interface_number)))
565 err = LIBUSB_ERROR_NOT_FOUND;
568 dev->claimed_interfaces &= ~(1 << interface_number);
569 CTX_UNLOCK(dev->ctx);
574 libusb_set_interface_alt_setting(struct libusb20_device *pdev,
575 int interface_number, int alternate_setting)
580 dev = libusb_get_device(pdev);
582 return (LIBUSB_ERROR_INVALID_PARAM);
584 if (interface_number < 0 || interface_number > 31)
585 return (LIBUSB_ERROR_INVALID_PARAM);
588 if (!(dev->claimed_interfaces & (1 << interface_number)))
589 err = LIBUSB_ERROR_NOT_FOUND;
590 CTX_UNLOCK(dev->ctx);
595 libusb10_cancel_all_transfer(dev);
597 libusb10_remove_pollfd(dev->ctx, &dev->dev_poll);
599 err = libusb20_dev_set_alt_index(pdev,
600 interface_number, alternate_setting);
602 libusb10_add_pollfd(dev->ctx, &dev->dev_poll,
603 pdev, libusb20_dev_get_fd(pdev),
604 POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM);
606 return (err ? LIBUSB_ERROR_OTHER : 0);
609 static struct libusb20_transfer *
610 libusb10_get_transfer(struct libusb20_device *pdev,
611 uint8_t endpoint, uint8_t index)
613 index &= 1; /* double buffering */
615 index |= (endpoint & LIBUSB20_ENDPOINT_ADDRESS_MASK) * 4;
617 if (endpoint & LIBUSB20_ENDPOINT_DIR_MASK) {
618 /* this is an IN endpoint */
621 return (libusb20_tr_get_pointer(pdev, index));
625 libusb_clear_halt(struct libusb20_device *pdev, uint8_t endpoint)
627 struct libusb20_transfer *xfer;
628 struct libusb_device *dev;
631 xfer = libusb10_get_transfer(pdev, endpoint, 0);
633 return (LIBUSB_ERROR_INVALID_PARAM);
635 dev = libusb_get_device(pdev);
637 return (LIBUSB_ERROR_INVALID_PARAM);
640 err = libusb20_tr_open(xfer, 0, 0, endpoint);
641 CTX_UNLOCK(dev->ctx);
643 if (err != 0 && err != LIBUSB20_ERROR_BUSY)
644 return (LIBUSB_ERROR_OTHER);
646 libusb20_tr_clear_stall_sync(xfer);
648 /* check if we opened the transfer */
651 libusb20_tr_close(xfer);
652 CTX_UNLOCK(dev->ctx);
654 return (0); /* success */
658 libusb_reset_device(struct libusb20_device *pdev)
663 dev = libusb_get_device(pdev);
665 return (LIBUSB_ERROR_INVALID_PARAM);
667 libusb10_cancel_all_transfer(dev);
669 libusb10_remove_pollfd(dev->ctx, &dev->dev_poll);
671 err = libusb20_dev_reset(pdev);
673 libusb10_add_pollfd(dev->ctx, &dev->dev_poll,
674 pdev, libusb20_dev_get_fd(pdev),
675 POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM);
677 return (err ? LIBUSB_ERROR_OTHER : 0);
681 libusb_kernel_driver_active(struct libusb20_device *pdev, int interface)
684 return (LIBUSB_ERROR_INVALID_PARAM);
686 return (libusb20_dev_kernel_driver_active(
691 libusb_get_driver_np(struct libusb20_device *pdev, int interface,
692 char *name, int namelen)
694 return (libusb_get_driver(pdev, interface, name, namelen));
698 libusb_get_driver(struct libusb20_device *pdev, int interface,
699 char *name, int namelen)
705 return (LIBUSB_ERROR_INVALID_PARAM);
707 return (LIBUSB_ERROR_INVALID_PARAM);
709 err = libusb20_dev_get_iface_desc(
710 pdev, interface, name, namelen);
713 return (LIBUSB_ERROR_OTHER);
715 /* we only want the driver name */
716 ptr = strstr(name, ":");
724 libusb_detach_kernel_driver_np(struct libusb20_device *pdev, int interface)
726 return (libusb_detach_kernel_driver(pdev, interface));
730 libusb_detach_kernel_driver(struct libusb20_device *pdev, int interface)
735 return (LIBUSB_ERROR_INVALID_PARAM);
737 err = libusb20_dev_detach_kernel_driver(
740 return (err ? LIBUSB_ERROR_OTHER : 0);
744 libusb_attach_kernel_driver(struct libusb20_device *pdev, int interface)
747 return (LIBUSB_ERROR_INVALID_PARAM);
748 /* stub - currently not supported by libusb20 */
752 /* Asynchronous device I/O */
754 struct libusb_transfer *
755 libusb_alloc_transfer(int iso_packets)
757 struct libusb_transfer *uxfer;
758 struct libusb_super_transfer *sxfer;
761 len = sizeof(struct libusb_transfer) +
762 sizeof(struct libusb_super_transfer) +
763 (iso_packets * sizeof(libusb_iso_packet_descriptor));
769 memset(sxfer, 0, len);
771 uxfer = (struct libusb_transfer *)(
772 ((uint8_t *)sxfer) + sizeof(*sxfer));
774 /* set default value */
775 uxfer->num_iso_packets = iso_packets;
781 libusb_free_transfer(struct libusb_transfer *uxfer)
783 struct libusb_super_transfer *sxfer;
786 return; /* be NULL safe */
788 sxfer = (struct libusb_super_transfer *)(
789 (uint8_t *)uxfer - sizeof(*sxfer));
795 libusb10_get_maxframe(struct libusb20_device *pdev, libusb_transfer *xfer)
800 usb_speed = libusb20_dev_get_speed(pdev);
802 switch (xfer->type) {
803 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
805 case LIBUSB20_SPEED_LOW:
806 case LIBUSB20_SPEED_FULL:
814 case LIBUSB_TRANSFER_TYPE_CONTROL:
825 libusb10_get_buffsize(struct libusb20_device *pdev, libusb_transfer *xfer)
830 usb_speed = libusb20_dev_get_speed(pdev);
832 switch (xfer->type) {
833 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
834 ret = 0; /* kernel will auto-select */
836 case LIBUSB_TRANSFER_TYPE_CONTROL:
841 case LIBUSB20_SPEED_LOW:
844 case LIBUSB20_SPEED_FULL:
857 libusb10_convert_error(uint8_t status)
862 case LIBUSB20_TRANSFER_START:
863 case LIBUSB20_TRANSFER_COMPLETED:
864 return (LIBUSB_TRANSFER_COMPLETED);
865 case LIBUSB20_TRANSFER_OVERFLOW:
866 return (LIBUSB_TRANSFER_OVERFLOW);
867 case LIBUSB20_TRANSFER_NO_DEVICE:
868 return (LIBUSB_TRANSFER_NO_DEVICE);
869 case LIBUSB20_TRANSFER_STALL:
870 return (LIBUSB_TRANSFER_STALL);
871 case LIBUSB20_TRANSFER_CANCELLED:
872 return (LIBUSB_TRANSFER_CANCELLED);
873 case LIBUSB20_TRANSFER_TIMED_OUT:
874 return (LIBUSB_TRANSFER_TIMED_OUT);
876 return (LIBUSB_TRANSFER_ERROR);
880 /* This function must be called locked */
883 libusb10_complete_transfer(struct libusb20_transfer *pxfer,
884 struct libusb_super_transfer *sxfer, int status)
886 struct libusb_transfer *uxfer;
887 struct libusb_device *dev;
889 uxfer = (struct libusb_transfer *)(
890 ((uint8_t *)sxfer) + sizeof(*sxfer));
893 libusb20_tr_set_priv_sc1(pxfer, NULL);
895 /* set transfer status */
896 uxfer->status = status;
898 /* update super transfer state */
899 sxfer->state = LIBUSB_SUPER_XFER_ST_NONE;
901 dev = libusb_get_device(uxfer->dev_handle);
903 TAILQ_INSERT_TAIL(&dev->ctx->tr_done, sxfer, entry);
906 /* This function must be called locked */
909 libusb10_isoc_proxy(struct libusb20_transfer *pxfer)
911 struct libusb_super_transfer *sxfer;
912 struct libusb_transfer *uxfer;
914 uint16_t iso_packets;
919 status = libusb20_tr_get_status(pxfer);
920 sxfer = libusb20_tr_get_priv_sc1(pxfer);
921 actlen = libusb20_tr_get_actual_length(pxfer);
922 iso_packets = libusb20_tr_get_max_frames(pxfer);
925 return; /* cancelled - nothing to do */
927 uxfer = (struct libusb_transfer *)(
928 ((uint8_t *)sxfer) + sizeof(*sxfer));
930 if (iso_packets > uxfer->num_iso_packets)
931 iso_packets = uxfer->num_iso_packets;
933 if (iso_packets == 0)
934 return; /* nothing to do */
936 /* make sure that the number of ISOCHRONOUS packets is valid */
937 uxfer->num_iso_packets = iso_packets;
939 flags = uxfer->flags;
942 case LIBUSB20_TRANSFER_COMPLETED:
944 /* update actual length */
945 uxfer->actual_length = actlen;
946 for (i = 0; i != iso_packets; i++) {
947 uxfer->iso_packet_desc[i].actual_length =
948 libusb20_tr_get_length(pxfer, i);
950 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED);
953 case LIBUSB20_TRANSFER_START:
955 /* setup length(s) */
957 for (i = 0; i != iso_packets; i++) {
958 libusb20_tr_setup_isoc(pxfer,
959 &uxfer->buffer[actlen],
960 uxfer->iso_packet_desc[i].length, i);
961 actlen += uxfer->iso_packet_desc[i].length;
967 libusb20_tr_set_total_frames(pxfer, iso_packets);
968 libusb20_tr_submit(pxfer);
970 /* fork another USB transfer, if any */
971 libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint);
975 libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status));
980 /* This function must be called locked */
983 libusb10_bulk_intr_proxy(struct libusb20_transfer *pxfer)
985 struct libusb_super_transfer *sxfer;
986 struct libusb_transfer *uxfer;
992 status = libusb20_tr_get_status(pxfer);
993 sxfer = libusb20_tr_get_priv_sc1(pxfer);
994 max_bulk = libusb20_tr_get_max_total_length(pxfer);
995 actlen = libusb20_tr_get_actual_length(pxfer);
998 return; /* cancelled - nothing to do */
1000 uxfer = (struct libusb_transfer *)(
1001 ((uint8_t *)sxfer) + sizeof(*sxfer));
1003 flags = uxfer->flags;
1006 case LIBUSB20_TRANSFER_COMPLETED:
1008 uxfer->actual_length += actlen;
1010 /* check for short packet */
1011 if (sxfer->last_len != actlen) {
1012 if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) {
1013 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR);
1015 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED);
1019 /* check for end of data */
1020 if (sxfer->rem_len == 0) {
1021 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED);
1026 case LIBUSB20_TRANSFER_START:
1027 if (max_bulk > sxfer->rem_len) {
1028 max_bulk = sxfer->rem_len;
1030 /* setup new BULK or INTERRUPT transaction */
1031 libusb20_tr_setup_bulk(pxfer,
1032 sxfer->curr_data, max_bulk, uxfer->timeout);
1034 /* update counters */
1035 sxfer->last_len = max_bulk;
1036 sxfer->curr_data += max_bulk;
1037 sxfer->rem_len -= max_bulk;
1039 libusb20_tr_submit(pxfer);
1041 /* check if we can fork another USB transfer */
1042 if (sxfer->rem_len == 0)
1043 libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint);
1047 libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status));
1052 /* This function must be called locked */
1055 libusb10_ctrl_proxy(struct libusb20_transfer *pxfer)
1057 struct libusb_super_transfer *sxfer;
1058 struct libusb_transfer *uxfer;
1064 status = libusb20_tr_get_status(pxfer);
1065 sxfer = libusb20_tr_get_priv_sc1(pxfer);
1066 max_bulk = libusb20_tr_get_max_total_length(pxfer);
1067 actlen = libusb20_tr_get_actual_length(pxfer);
1070 return; /* cancelled - nothing to do */
1072 uxfer = (struct libusb_transfer *)(
1073 ((uint8_t *)sxfer) + sizeof(*sxfer));
1075 flags = uxfer->flags;
1078 case LIBUSB20_TRANSFER_COMPLETED:
1080 uxfer->actual_length += actlen;
1082 /* subtract length of SETUP packet, if any */
1083 actlen -= libusb20_tr_get_length(pxfer, 0);
1085 /* check for short packet */
1086 if (sxfer->last_len != actlen) {
1087 if (flags & LIBUSB_TRANSFER_SHORT_NOT_OK) {
1088 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_ERROR);
1090 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED);
1094 /* check for end of data */
1095 if (sxfer->rem_len == 0) {
1096 libusb10_complete_transfer(pxfer, sxfer, LIBUSB_TRANSFER_COMPLETED);
1101 case LIBUSB20_TRANSFER_START:
1102 if (max_bulk > sxfer->rem_len) {
1103 max_bulk = sxfer->rem_len;
1105 /* setup new CONTROL transaction */
1106 if (status == LIBUSB20_TRANSFER_COMPLETED) {
1107 /* next fragment - don't send SETUP packet */
1108 libusb20_tr_set_length(pxfer, 0, 0);
1110 /* first fragment - send SETUP packet */
1111 libusb20_tr_set_length(pxfer, 8, 0);
1112 libusb20_tr_set_buffer(pxfer, uxfer->buffer, 0);
1115 if (max_bulk != 0) {
1116 libusb20_tr_set_length(pxfer, max_bulk, 1);
1117 libusb20_tr_set_buffer(pxfer, sxfer->curr_data, 1);
1118 libusb20_tr_set_total_frames(pxfer, 2);
1120 libusb20_tr_set_total_frames(pxfer, 1);
1123 /* update counters */
1124 sxfer->last_len = max_bulk;
1125 sxfer->curr_data += max_bulk;
1126 sxfer->rem_len -= max_bulk;
1128 libusb20_tr_submit(pxfer);
1130 /* check if we can fork another USB transfer */
1131 if (sxfer->rem_len == 0)
1132 libusb10_submit_transfer_sub(libusb20_tr_get_priv_sc0(pxfer), uxfer->endpoint);
1136 libusb10_complete_transfer(pxfer, sxfer, libusb10_convert_error(status));
1141 /* The following function must be called locked */
1144 libusb10_submit_transfer_sub(struct libusb20_device *pdev, uint8_t endpoint)
1146 struct libusb20_transfer *pxfer0;
1147 struct libusb20_transfer *pxfer1;
1148 struct libusb_super_transfer *sxfer;
1149 struct libusb_transfer *uxfer;
1150 struct libusb_device *dev;
1157 dev = libusb_get_device(pdev);
1159 pxfer0 = libusb10_get_transfer(pdev, endpoint, 0);
1160 pxfer1 = libusb10_get_transfer(pdev, endpoint, 1);
1162 if (pxfer0 == NULL || pxfer1 == NULL)
1163 return; /* shouldn't happen */
1166 if (libusb20_tr_pending(pxfer0))
1168 if (libusb20_tr_pending(pxfer1))
1173 /* wait till one of the transfers complete */
1176 sxfer = libusb20_tr_get_priv_sc1(pxfer1);
1178 return; /* cancelling */
1180 return; /* cannot queue another one */
1181 /* swap transfers */
1185 sxfer = libusb20_tr_get_priv_sc1(pxfer0);
1187 return; /* cancelling */
1189 return; /* cannot queue another one */
1190 /* swap transfers */
1197 /* find next transfer on same endpoint */
1198 TAILQ_FOREACH(sxfer, &dev->tr_head, entry) {
1200 uxfer = (struct libusb_transfer *)(
1201 ((uint8_t *)sxfer) + sizeof(*sxfer));
1203 if (uxfer->endpoint == endpoint) {
1204 TAILQ_REMOVE(&dev->tr_head, sxfer, entry);
1205 sxfer->entry.tqe_prev = NULL;
1209 return; /* success */
1213 libusb20_tr_set_priv_sc0(pxfer0, pdev);
1214 libusb20_tr_set_priv_sc1(pxfer0, sxfer);
1216 /* reset super transfer state */
1217 sxfer->rem_len = uxfer->length;
1218 sxfer->curr_data = uxfer->buffer;
1219 uxfer->actual_length = 0;
1221 switch (uxfer->type) {
1222 case LIBUSB_TRANSFER_TYPE_ISOCHRONOUS:
1223 libusb20_tr_set_callback(pxfer0, libusb10_isoc_proxy);
1225 case LIBUSB_TRANSFER_TYPE_BULK:
1226 case LIBUSB_TRANSFER_TYPE_INTERRUPT:
1227 libusb20_tr_set_callback(pxfer0, libusb10_bulk_intr_proxy);
1229 case LIBUSB_TRANSFER_TYPE_CONTROL:
1230 libusb20_tr_set_callback(pxfer0, libusb10_ctrl_proxy);
1231 if (sxfer->rem_len < 8)
1234 /* remove SETUP packet from data */
1235 sxfer->rem_len -= 8;
1236 sxfer->curr_data += 8;
1242 buffsize = libusb10_get_buffsize(pdev, uxfer);
1243 maxframe = libusb10_get_maxframe(pdev, uxfer);
1245 /* make sure the transfer is opened */
1246 err = libusb20_tr_open(pxfer0, buffsize, maxframe, endpoint);
1247 if (err && (err != LIBUSB20_ERROR_BUSY)) {
1250 libusb20_tr_start(pxfer0);
1254 libusb10_complete_transfer(pxfer0, sxfer, LIBUSB_TRANSFER_ERROR);
1256 /* make sure our event loop spins the done handler */
1258 write(dev->ctx->ctrl_pipe[1], &dummy, sizeof(dummy));
1261 /* The following function must be called unlocked */
1264 libusb_submit_transfer(struct libusb_transfer *uxfer)
1266 struct libusb20_transfer *pxfer0;
1267 struct libusb20_transfer *pxfer1;
1268 struct libusb_super_transfer *sxfer;
1269 struct libusb_device *dev;
1274 return (LIBUSB_ERROR_INVALID_PARAM);
1276 if (uxfer->dev_handle == NULL)
1277 return (LIBUSB_ERROR_INVALID_PARAM);
1279 endpoint = uxfer->endpoint;
1282 return (LIBUSB_ERROR_INVALID_PARAM);
1284 dev = libusb_get_device(uxfer->dev_handle);
1286 DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer enter");
1288 sxfer = (struct libusb_super_transfer *)(
1289 (uint8_t *)uxfer - sizeof(*sxfer));
1293 pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0);
1294 pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1);
1296 if (pxfer0 == NULL || pxfer1 == NULL) {
1297 err = LIBUSB_ERROR_OTHER;
1298 } else if ((sxfer->entry.tqe_prev != NULL) ||
1299 (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) ||
1300 (libusb20_tr_get_priv_sc1(pxfer1) == sxfer)) {
1301 err = LIBUSB_ERROR_BUSY;
1304 /* set pending state */
1305 sxfer->state = LIBUSB_SUPER_XFER_ST_PEND;
1307 /* insert transfer into transfer head list */
1308 TAILQ_INSERT_TAIL(&dev->tr_head, sxfer, entry);
1310 /* start work transfers */
1311 libusb10_submit_transfer_sub(
1312 uxfer->dev_handle, endpoint);
1314 err = 0; /* success */
1317 CTX_UNLOCK(dev->ctx);
1319 DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_submit_transfer leave %d", err);
1324 /* Asynchronous transfer cancel */
1327 libusb_cancel_transfer(struct libusb_transfer *uxfer)
1329 struct libusb20_transfer *pxfer0;
1330 struct libusb20_transfer *pxfer1;
1331 struct libusb_super_transfer *sxfer;
1332 struct libusb_device *dev;
1337 return (LIBUSB_ERROR_INVALID_PARAM);
1339 /* check if not initialised */
1340 if (uxfer->dev_handle == NULL)
1341 return (LIBUSB_ERROR_NOT_FOUND);
1343 endpoint = uxfer->endpoint;
1346 return (LIBUSB_ERROR_INVALID_PARAM);
1348 dev = libusb_get_device(uxfer->dev_handle);
1350 DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer enter");
1352 sxfer = (struct libusb_super_transfer *)(
1353 (uint8_t *)uxfer - sizeof(*sxfer));
1359 pxfer0 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 0);
1360 pxfer1 = libusb10_get_transfer(uxfer->dev_handle, endpoint, 1);
1362 if (sxfer->state != LIBUSB_SUPER_XFER_ST_PEND) {
1363 /* only update the transfer status */
1364 uxfer->status = LIBUSB_TRANSFER_CANCELLED;
1365 retval = LIBUSB_ERROR_NOT_FOUND;
1366 } else if (sxfer->entry.tqe_prev != NULL) {
1367 /* we are lucky - transfer is on a queue */
1368 TAILQ_REMOVE(&dev->tr_head, sxfer, entry);
1369 sxfer->entry.tqe_prev = NULL;
1370 libusb10_complete_transfer(NULL,
1371 sxfer, LIBUSB_TRANSFER_CANCELLED);
1372 } else if (pxfer0 == NULL || pxfer1 == NULL) {
1374 retval = LIBUSB_ERROR_NOT_FOUND;
1375 } else if (libusb20_tr_get_priv_sc1(pxfer0) == sxfer) {
1376 libusb10_complete_transfer(pxfer0,
1377 sxfer, LIBUSB_TRANSFER_CANCELLED);
1378 libusb20_tr_stop(pxfer0);
1379 /* make sure the queue doesn't stall */
1380 libusb10_submit_transfer_sub(
1381 uxfer->dev_handle, endpoint);
1382 } else if (libusb20_tr_get_priv_sc1(pxfer1) == sxfer) {
1383 libusb10_complete_transfer(pxfer1,
1384 sxfer, LIBUSB_TRANSFER_CANCELLED);
1385 libusb20_tr_stop(pxfer1);
1386 /* make sure the queue doesn't stall */
1387 libusb10_submit_transfer_sub(
1388 uxfer->dev_handle, endpoint);
1391 retval = LIBUSB_ERROR_NOT_FOUND;
1394 CTX_UNLOCK(dev->ctx);
1396 DPRINTF(dev->ctx, LIBUSB_DEBUG_FUNCTION, "libusb_cancel_transfer leave");
1402 libusb10_cancel_all_transfer(libusb_device *dev)
1408 libusb_cpu_to_le16(uint16_t x)
1410 return (htole16(x));
1414 libusb_le16_to_cpu(uint16_t x)
1416 return (le16toh(x));
1420 libusb_strerror(int code)
1423 return ("Unknown error");