0b8d792721
- Fix a compile warning where the return value of a call to a write() function was ignored. - Remove redundant include files from userland USB header files. - Add some now needed include files to various C-files.
748 lines
16 KiB
C
748 lines
16 KiB
C
/* $FreeBSD$ */
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/*-
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* Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef LIBUSB_GLOBAL_INCLUDE_FILE
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#include LIBUSB_GLOBAL_INCLUDE_FILE
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#else
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#include <errno.h>
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#include <poll.h>
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/queue.h>
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#include <sys/endian.h>
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#endif
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#define libusb_device_handle libusb20_device
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#include "libusb20.h"
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#include "libusb20_desc.h"
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#include "libusb20_int.h"
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#include "libusb.h"
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#include "libusb10.h"
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UNEXPORTED void
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libusb10_add_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd,
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struct libusb20_device *pdev, int fd, short events)
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{
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if (ctx == NULL)
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return; /* invalid */
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if (pollfd->entry.tqe_prev != NULL)
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return; /* already queued */
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if (fd < 0)
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return; /* invalid */
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pollfd->pdev = pdev;
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pollfd->pollfd.fd = fd;
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pollfd->pollfd.events = events;
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CTX_LOCK(ctx);
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TAILQ_INSERT_TAIL(&ctx->pollfds, pollfd, entry);
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CTX_UNLOCK(ctx);
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if (ctx->fd_added_cb)
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ctx->fd_added_cb(fd, events, ctx->fd_cb_user_data);
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}
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UNEXPORTED void
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libusb10_remove_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd)
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{
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if (ctx == NULL)
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return; /* invalid */
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if (pollfd->entry.tqe_prev == NULL)
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return; /* already dequeued */
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CTX_LOCK(ctx);
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TAILQ_REMOVE(&ctx->pollfds, pollfd, entry);
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pollfd->entry.tqe_prev = NULL;
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CTX_UNLOCK(ctx);
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if (ctx->fd_removed_cb)
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ctx->fd_removed_cb(pollfd->pollfd.fd, ctx->fd_cb_user_data);
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}
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/* This function must be called locked */
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static int
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libusb10_handle_events_sub(struct libusb_context *ctx, struct timeval *tv)
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{
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struct libusb_device *dev;
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struct libusb20_device **ppdev;
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struct libusb_super_pollfd *pfd;
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struct pollfd *fds;
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struct libusb_super_transfer *sxfer;
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struct libusb_transfer *uxfer;
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nfds_t nfds;
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int timeout;
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int i;
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int err;
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DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb10_handle_events_sub enter");
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nfds = 0;
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i = 0;
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TAILQ_FOREACH(pfd, &ctx->pollfds, entry)
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nfds++;
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fds = alloca(sizeof(*fds) * nfds);
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if (fds == NULL)
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return (LIBUSB_ERROR_NO_MEM);
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ppdev = alloca(sizeof(*ppdev) * nfds);
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if (ppdev == NULL)
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return (LIBUSB_ERROR_NO_MEM);
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TAILQ_FOREACH(pfd, &ctx->pollfds, entry) {
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fds[i].fd = pfd->pollfd.fd;
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fds[i].events = pfd->pollfd.events;
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fds[i].revents = 0;
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ppdev[i] = pfd->pdev;
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if (pfd->pdev != NULL)
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libusb_get_device(pfd->pdev)->refcnt++;
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i++;
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}
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if (tv == NULL)
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timeout = -1;
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else
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timeout = (tv->tv_sec * 1000) + ((tv->tv_usec + 999) / 1000);
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CTX_UNLOCK(ctx);
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err = poll(fds, nfds, timeout);
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CTX_LOCK(ctx);
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if ((err == -1) && (errno == EINTR))
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err = LIBUSB_ERROR_INTERRUPTED;
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else if (err < 0)
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err = LIBUSB_ERROR_IO;
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if (err < 1) {
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for (i = 0; i != (int)nfds; i++) {
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if (ppdev[i] != NULL) {
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CTX_UNLOCK(ctx);
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libusb_unref_device(libusb_get_device(ppdev[i]));
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CTX_LOCK(ctx);
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}
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}
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goto do_done;
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}
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for (i = 0; i != (int)nfds; i++) {
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if (ppdev[i] != NULL) {
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dev = libusb_get_device(ppdev[i]);
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if (fds[i].revents == 0)
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err = 0; /* nothing to do */
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else
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err = libusb20_dev_process(ppdev[i]);
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if (err) {
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/* cancel all transfers - device is gone */
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libusb10_cancel_all_transfer(dev);
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/* remove USB device from polling loop */
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libusb10_remove_pollfd(dev->ctx, &dev->dev_poll);
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}
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CTX_UNLOCK(ctx);
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libusb_unref_device(dev);
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CTX_LOCK(ctx);
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} else {
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uint8_t dummy;
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while (1) {
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if (read(fds[i].fd, &dummy, 1) != 1)
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break;
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}
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}
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}
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err = 0;
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do_done:
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/* Do all done callbacks */
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while ((sxfer = TAILQ_FIRST(&ctx->tr_done))) {
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uint8_t flags;
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TAILQ_REMOVE(&ctx->tr_done, sxfer, entry);
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sxfer->entry.tqe_prev = NULL;
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ctx->tr_done_ref++;
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CTX_UNLOCK(ctx);
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uxfer = (struct libusb_transfer *)(
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((uint8_t *)sxfer) + sizeof(*sxfer));
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/* Allow the callback to free the transfer itself. */
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flags = uxfer->flags;
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if (uxfer->callback != NULL)
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(uxfer->callback) (uxfer);
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/* Check if the USB transfer should be automatically freed. */
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if (flags & LIBUSB_TRANSFER_FREE_TRANSFER)
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libusb_free_transfer(uxfer);
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CTX_LOCK(ctx);
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ctx->tr_done_ref--;
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ctx->tr_done_gen++;
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}
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/* Wakeup other waiters */
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pthread_cond_broadcast(&ctx->ctx_cond);
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return (err);
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}
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/* Polling and timing */
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int
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libusb_try_lock_events(libusb_context *ctx)
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{
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int err;
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ctx = GET_CONTEXT(ctx);
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if (ctx == NULL)
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return (1);
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err = CTX_TRYLOCK(ctx);
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if (err)
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return (1);
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err = (ctx->ctx_handler != NO_THREAD);
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if (err)
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CTX_UNLOCK(ctx);
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else
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ctx->ctx_handler = pthread_self();
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return (err);
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}
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void
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libusb_lock_events(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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CTX_LOCK(ctx);
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if (ctx->ctx_handler == NO_THREAD)
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ctx->ctx_handler = pthread_self();
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}
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void
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libusb_unlock_events(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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if (ctx->ctx_handler == pthread_self()) {
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ctx->ctx_handler = NO_THREAD;
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pthread_cond_broadcast(&ctx->ctx_cond);
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}
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CTX_UNLOCK(ctx);
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}
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int
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libusb_event_handling_ok(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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return (ctx->ctx_handler == pthread_self());
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}
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int
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libusb_event_handler_active(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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return (ctx->ctx_handler != NO_THREAD);
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}
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void
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libusb_lock_event_waiters(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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CTX_LOCK(ctx);
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}
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void
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libusb_unlock_event_waiters(libusb_context *ctx)
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{
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ctx = GET_CONTEXT(ctx);
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CTX_UNLOCK(ctx);
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}
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int
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libusb_wait_for_event(libusb_context *ctx, struct timeval *tv)
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{
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struct timespec ts;
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int err;
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ctx = GET_CONTEXT(ctx);
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DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_wait_for_event enter");
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if (tv == NULL) {
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pthread_cond_wait(&ctx->ctx_cond,
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&ctx->ctx_lock);
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return (0);
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}
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err = clock_gettime(CLOCK_MONOTONIC, &ts);
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if (err < 0)
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return (LIBUSB_ERROR_OTHER);
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/*
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* The "tv" arguments points to a relative time structure and
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* not an absolute time structure.
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*/
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ts.tv_sec += tv->tv_sec;
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ts.tv_nsec += tv->tv_usec * 1000;
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if (ts.tv_nsec >= 1000000000) {
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ts.tv_nsec -= 1000000000;
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ts.tv_sec++;
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}
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err = pthread_cond_timedwait(&ctx->ctx_cond,
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&ctx->ctx_lock, &ts);
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if (err == ETIMEDOUT)
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return (1);
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return (0);
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}
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int
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libusb_handle_events_timeout(libusb_context *ctx, struct timeval *tv)
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{
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int err;
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ctx = GET_CONTEXT(ctx);
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DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_handle_events_timeout enter");
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libusb_lock_events(ctx);
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err = libusb_handle_events_locked(ctx, tv);
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libusb_unlock_events(ctx);
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DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_handle_events_timeout leave");
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return (err);
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}
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int
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libusb_handle_events(libusb_context *ctx)
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{
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return (libusb_handle_events_timeout(ctx, NULL));
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}
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int
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libusb_handle_events_locked(libusb_context *ctx, struct timeval *tv)
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{
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int err;
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ctx = GET_CONTEXT(ctx);
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if (libusb_event_handling_ok(ctx)) {
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err = libusb10_handle_events_sub(ctx, tv);
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} else {
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libusb_wait_for_event(ctx, tv);
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err = 0;
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}
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return (err);
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}
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int
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libusb_get_next_timeout(libusb_context *ctx, struct timeval *tv)
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{
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/* all timeouts are currently being done by the kernel */
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timerclear(tv);
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return (0);
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}
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void
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libusb_set_pollfd_notifiers(libusb_context *ctx,
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libusb_pollfd_added_cb added_cb, libusb_pollfd_removed_cb removed_cb,
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void *user_data)
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{
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ctx = GET_CONTEXT(ctx);
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ctx->fd_added_cb = added_cb;
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ctx->fd_removed_cb = removed_cb;
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ctx->fd_cb_user_data = user_data;
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}
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struct libusb_pollfd **
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libusb_get_pollfds(libusb_context *ctx)
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{
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struct libusb_super_pollfd *pollfd;
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libusb_pollfd **ret;
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int i;
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ctx = GET_CONTEXT(ctx);
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CTX_LOCK(ctx);
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i = 0;
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TAILQ_FOREACH(pollfd, &ctx->pollfds, entry)
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i++;
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ret = calloc(i + 1, sizeof(struct libusb_pollfd *));
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if (ret == NULL)
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goto done;
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i = 0;
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TAILQ_FOREACH(pollfd, &ctx->pollfds, entry)
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ret[i++] = &pollfd->pollfd;
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ret[i] = NULL;
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done:
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CTX_UNLOCK(ctx);
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return (ret);
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}
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/* Synchronous device I/O */
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int
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libusb_control_transfer(libusb_device_handle *devh,
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uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex,
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uint8_t *data, uint16_t wLength, unsigned int timeout)
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{
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struct LIBUSB20_CONTROL_SETUP_DECODED req;
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int err;
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uint16_t actlen;
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if (devh == NULL)
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return (LIBUSB_ERROR_INVALID_PARAM);
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if ((wLength != 0) && (data == NULL))
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return (LIBUSB_ERROR_INVALID_PARAM);
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LIBUSB20_INIT(LIBUSB20_CONTROL_SETUP, &req);
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req.bmRequestType = bmRequestType;
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req.bRequest = bRequest;
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req.wValue = wValue;
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req.wIndex = wIndex;
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req.wLength = wLength;
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err = libusb20_dev_request_sync(devh, &req, data,
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&actlen, timeout, 0);
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if (err == LIBUSB20_ERROR_PIPE)
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return (LIBUSB_ERROR_PIPE);
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else if (err == LIBUSB20_ERROR_TIMEOUT)
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return (LIBUSB_ERROR_TIMEOUT);
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else if (err)
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return (LIBUSB_ERROR_NO_DEVICE);
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return (actlen);
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}
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|
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static void
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libusb10_do_transfer_cb(struct libusb_transfer *transfer)
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{
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libusb_context *ctx;
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int *pdone;
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ctx = GET_CONTEXT(NULL);
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DPRINTF(ctx, LIBUSB_DEBUG_TRANSFER, "sync I/O done");
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pdone = transfer->user_data;
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*pdone = 1;
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}
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|
|
/*
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* TODO: Replace the following function. Allocating and freeing on a
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* per-transfer basis is slow. --HPS
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*/
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static int
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libusb10_do_transfer(libusb_device_handle *devh,
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uint8_t endpoint, uint8_t *data, int length,
|
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int *transferred, unsigned int timeout, int type)
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{
|
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libusb_context *ctx;
|
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struct libusb_transfer *xfer;
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int done;
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int ret;
|
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|
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if (devh == NULL)
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return (LIBUSB_ERROR_INVALID_PARAM);
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|
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if ((length != 0) && (data == NULL))
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return (LIBUSB_ERROR_INVALID_PARAM);
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|
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xfer = libusb_alloc_transfer(0);
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if (xfer == NULL)
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return (LIBUSB_ERROR_NO_MEM);
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|
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ctx = libusb_get_device(devh)->ctx;
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|
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xfer->dev_handle = devh;
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xfer->endpoint = endpoint;
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xfer->type = type;
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xfer->timeout = timeout;
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xfer->buffer = data;
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xfer->length = length;
|
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xfer->user_data = (void *)&done;
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xfer->callback = libusb10_do_transfer_cb;
|
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done = 0;
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|
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if ((ret = libusb_submit_transfer(xfer)) < 0) {
|
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libusb_free_transfer(xfer);
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return (ret);
|
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}
|
|
while (done == 0) {
|
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if ((ret = libusb_handle_events(ctx)) < 0) {
|
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libusb_cancel_transfer(xfer);
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usleep(1000); /* nice it */
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}
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}
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|
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*transferred = xfer->actual_length;
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|
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switch (xfer->status) {
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case LIBUSB_TRANSFER_COMPLETED:
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ret = 0;
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break;
|
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case LIBUSB_TRANSFER_TIMED_OUT:
|
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ret = LIBUSB_ERROR_TIMEOUT;
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break;
|
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case LIBUSB_TRANSFER_OVERFLOW:
|
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ret = LIBUSB_ERROR_OVERFLOW;
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break;
|
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case LIBUSB_TRANSFER_STALL:
|
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ret = LIBUSB_ERROR_PIPE;
|
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break;
|
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case LIBUSB_TRANSFER_NO_DEVICE:
|
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ret = LIBUSB_ERROR_NO_DEVICE;
|
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break;
|
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default:
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ret = LIBUSB_ERROR_OTHER;
|
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break;
|
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}
|
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|
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libusb_free_transfer(xfer);
|
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return (ret);
|
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}
|
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|
|
int
|
|
libusb_bulk_transfer(libusb_device_handle *devh,
|
|
uint8_t endpoint, uint8_t *data, int length,
|
|
int *transferred, unsigned int timeout)
|
|
{
|
|
libusb_context *ctx;
|
|
int ret;
|
|
|
|
ctx = GET_CONTEXT(NULL);
|
|
DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_bulk_transfer enter");
|
|
|
|
ret = libusb10_do_transfer(devh, endpoint, data, length, transferred,
|
|
timeout, LIBUSB_TRANSFER_TYPE_BULK);
|
|
|
|
DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_bulk_transfer leave");
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
libusb_interrupt_transfer(libusb_device_handle *devh,
|
|
uint8_t endpoint, uint8_t *data, int length,
|
|
int *transferred, unsigned int timeout)
|
|
{
|
|
libusb_context *ctx;
|
|
int ret;
|
|
|
|
ctx = GET_CONTEXT(NULL);
|
|
DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_interrupt_transfer enter");
|
|
|
|
ret = libusb10_do_transfer(devh, endpoint, data, length, transferred,
|
|
timeout, LIBUSB_TRANSFER_TYPE_INTERRUPT);
|
|
|
|
DPRINTF(ctx, LIBUSB_DEBUG_FUNCTION, "libusb_interrupt_transfer leave");
|
|
return (ret);
|
|
}
|
|
|
|
uint8_t *
|
|
libusb_get_iso_packet_buffer(struct libusb_transfer *transfer, uint32_t off)
|
|
{
|
|
uint8_t *ptr;
|
|
uint32_t n;
|
|
|
|
if (transfer->num_iso_packets < 0)
|
|
return (NULL);
|
|
|
|
if (off >= (uint32_t)transfer->num_iso_packets)
|
|
return (NULL);
|
|
|
|
ptr = transfer->buffer;
|
|
if (ptr == NULL)
|
|
return (NULL);
|
|
|
|
for (n = 0; n != off; n++) {
|
|
ptr += transfer->iso_packet_desc[n].length;
|
|
}
|
|
return (ptr);
|
|
}
|
|
|
|
uint8_t *
|
|
libusb_get_iso_packet_buffer_simple(struct libusb_transfer *transfer, uint32_t off)
|
|
{
|
|
uint8_t *ptr;
|
|
|
|
if (transfer->num_iso_packets < 0)
|
|
return (NULL);
|
|
|
|
if (off >= (uint32_t)transfer->num_iso_packets)
|
|
return (NULL);
|
|
|
|
ptr = transfer->buffer;
|
|
if (ptr == NULL)
|
|
return (NULL);
|
|
|
|
ptr += transfer->iso_packet_desc[0].length * off;
|
|
|
|
return (ptr);
|
|
}
|
|
|
|
void
|
|
libusb_set_iso_packet_lengths(struct libusb_transfer *transfer, uint32_t length)
|
|
{
|
|
int n;
|
|
|
|
if (transfer->num_iso_packets < 0)
|
|
return;
|
|
|
|
for (n = 0; n != transfer->num_iso_packets; n++)
|
|
transfer->iso_packet_desc[n].length = length;
|
|
}
|
|
|
|
uint8_t *
|
|
libusb_control_transfer_get_data(struct libusb_transfer *transfer)
|
|
{
|
|
if (transfer->buffer == NULL)
|
|
return (NULL);
|
|
|
|
return (transfer->buffer + LIBUSB_CONTROL_SETUP_SIZE);
|
|
}
|
|
|
|
struct libusb_control_setup *
|
|
libusb_control_transfer_get_setup(struct libusb_transfer *transfer)
|
|
{
|
|
return ((struct libusb_control_setup *)transfer->buffer);
|
|
}
|
|
|
|
void
|
|
libusb_fill_control_setup(uint8_t *buf, uint8_t bmRequestType,
|
|
uint8_t bRequest, uint16_t wValue,
|
|
uint16_t wIndex, uint16_t wLength)
|
|
{
|
|
struct libusb_control_setup *req = (struct libusb_control_setup *)buf;
|
|
|
|
/* The alignment is OK for all fields below. */
|
|
req->bmRequestType = bmRequestType;
|
|
req->bRequest = bRequest;
|
|
req->wValue = htole16(wValue);
|
|
req->wIndex = htole16(wIndex);
|
|
req->wLength = htole16(wLength);
|
|
}
|
|
|
|
void
|
|
libusb_fill_control_transfer(struct libusb_transfer *transfer,
|
|
libusb_device_handle *devh, uint8_t *buf,
|
|
libusb_transfer_cb_fn callback, void *user_data,
|
|
uint32_t timeout)
|
|
{
|
|
struct libusb_control_setup *setup = (struct libusb_control_setup *)buf;
|
|
|
|
transfer->dev_handle = devh;
|
|
transfer->endpoint = 0;
|
|
transfer->type = LIBUSB_TRANSFER_TYPE_CONTROL;
|
|
transfer->timeout = timeout;
|
|
transfer->buffer = buf;
|
|
if (setup != NULL)
|
|
transfer->length = LIBUSB_CONTROL_SETUP_SIZE
|
|
+ le16toh(setup->wLength);
|
|
else
|
|
transfer->length = 0;
|
|
transfer->user_data = user_data;
|
|
transfer->callback = callback;
|
|
|
|
}
|
|
|
|
void
|
|
libusb_fill_bulk_transfer(struct libusb_transfer *transfer,
|
|
libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf,
|
|
int length, libusb_transfer_cb_fn callback, void *user_data,
|
|
uint32_t timeout)
|
|
{
|
|
transfer->dev_handle = devh;
|
|
transfer->endpoint = endpoint;
|
|
transfer->type = LIBUSB_TRANSFER_TYPE_BULK;
|
|
transfer->timeout = timeout;
|
|
transfer->buffer = buf;
|
|
transfer->length = length;
|
|
transfer->user_data = user_data;
|
|
transfer->callback = callback;
|
|
}
|
|
|
|
void
|
|
libusb_fill_interrupt_transfer(struct libusb_transfer *transfer,
|
|
libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf,
|
|
int length, libusb_transfer_cb_fn callback, void *user_data,
|
|
uint32_t timeout)
|
|
{
|
|
transfer->dev_handle = devh;
|
|
transfer->endpoint = endpoint;
|
|
transfer->type = LIBUSB_TRANSFER_TYPE_INTERRUPT;
|
|
transfer->timeout = timeout;
|
|
transfer->buffer = buf;
|
|
transfer->length = length;
|
|
transfer->user_data = user_data;
|
|
transfer->callback = callback;
|
|
}
|
|
|
|
void
|
|
libusb_fill_iso_transfer(struct libusb_transfer *transfer,
|
|
libusb_device_handle *devh, uint8_t endpoint, uint8_t *buf,
|
|
int length, int npacket, libusb_transfer_cb_fn callback,
|
|
void *user_data, uint32_t timeout)
|
|
{
|
|
transfer->dev_handle = devh;
|
|
transfer->endpoint = endpoint;
|
|
transfer->type = LIBUSB_TRANSFER_TYPE_ISOCHRONOUS;
|
|
transfer->timeout = timeout;
|
|
transfer->buffer = buf;
|
|
transfer->length = length;
|
|
transfer->num_iso_packets = npacket;
|
|
transfer->user_data = user_data;
|
|
transfer->callback = callback;
|
|
}
|
|
|