1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2009 Sylvestre Gallon. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef __LIBUSB10_H__ 29 #define __LIBUSB10_H__ 30 31 #ifndef LIBUSB_GLOBAL_INCLUDE_FILE 32 #include <sys/queue.h> 33 #endif 34 35 #define GET_CONTEXT(ctx) (((ctx) == NULL) ? usbi_default_context : (ctx)) 36 #define UNEXPORTED __attribute__((__visibility__("hidden"))) 37 #define CTX_LOCK(ctx) pthread_mutex_lock(&(ctx)->ctx_lock) 38 #define CTX_TRYLOCK(ctx) pthread_mutex_trylock(&(ctx)->ctx_lock) 39 #define CTX_UNLOCK(ctx) pthread_mutex_unlock(&(ctx)->ctx_lock) 40 #define HOTPLUG_LOCK(ctx) pthread_mutex_lock(&(ctx)->hotplug_lock) 41 #define HOTPLUG_UNLOCK(ctx) pthread_mutex_unlock(&(ctx)->hotplug_lock) 42 43 #define DPRINTF(ctx, dbg, format, ...) do { \ 44 switch (dbg) { \ 45 case LIBUSB_DEBUG_FUNCTION: \ 46 if ((ctx)->debug & LIBUSB_DEBUG_FUNCTION) { \ 47 printf("LIBUSB_FUNCTION: " \ 48 format "\n", ## __VA_ARGS__); \ 49 } \ 50 break; \ 51 case LIBUSB_DEBUG_TRANSFER: \ 52 if ((ctx)->debug & LIBUSB_DEBUG_TRANSFER) { \ 53 printf("LIBUSB_TRANSFER: " \ 54 format "\n", ## __VA_ARGS__); \ 55 } \ 56 break; \ 57 default: \ 58 break; \ 59 } \ 60 } while (0) 61 62 /* internal structures */ 63 64 struct libusb_super_pollfd { 65 TAILQ_ENTRY(libusb_super_pollfd) entry; 66 struct libusb20_device *pdev; 67 struct libusb_pollfd pollfd; 68 }; 69 70 struct libusb_super_transfer { 71 TAILQ_ENTRY(libusb_super_transfer) entry; 72 uint8_t *curr_data; 73 uint32_t rem_len; 74 uint32_t last_len; 75 uint32_t stream_id; 76 uint8_t state; 77 #define LIBUSB_SUPER_XFER_ST_NONE 0 78 #define LIBUSB_SUPER_XFER_ST_PEND 1 79 }; 80 81 struct libusb_hotplug_callback_handle_struct { 82 TAILQ_ENTRY(libusb_hotplug_callback_handle_struct) entry; 83 int events; 84 int vendor; 85 int product; 86 int devclass; 87 libusb_hotplug_callback_fn fn; 88 void *user_data; 89 }; 90 91 TAILQ_HEAD(libusb_device_head, libusb_device); 92 93 struct libusb_context { 94 int debug; 95 int debug_fixed; 96 int ctrl_pipe[2]; 97 int tr_done_ref; 98 int tr_done_gen; 99 100 pthread_mutex_t ctx_lock; 101 pthread_mutex_t hotplug_lock; 102 pthread_cond_t ctx_cond; 103 pthread_t hotplug_handler; 104 pthread_t ctx_handler; 105 #define NO_THREAD ((pthread_t)-1) 106 107 TAILQ_HEAD(, libusb_super_pollfd) pollfds; 108 TAILQ_HEAD(, libusb_super_transfer) tr_done; 109 TAILQ_HEAD(, libusb_hotplug_callback_handle_struct) hotplug_cbh; 110 struct libusb_device_head hotplug_devs; 111 112 struct libusb_super_pollfd ctx_poll; 113 114 libusb_pollfd_added_cb fd_added_cb; 115 libusb_pollfd_removed_cb fd_removed_cb; 116 void *fd_cb_user_data; 117 }; 118 119 struct libusb_device { 120 int refcnt; 121 122 int device_is_gone; 123 124 uint32_t claimed_interfaces; 125 126 struct libusb_super_pollfd dev_poll; 127 128 struct libusb_context *ctx; 129 130 TAILQ_ENTRY(libusb_device) hotplug_entry; 131 132 TAILQ_HEAD(, libusb_super_transfer) tr_head; 133 134 struct libusb20_device *os_priv; 135 }; 136 137 extern struct libusb_context *usbi_default_context; 138 139 void libusb10_add_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd, struct libusb20_device *pdev, int fd, short events); 140 void libusb10_remove_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd); 141 void libusb10_cancel_all_transfer(libusb_device *dev); 142 void libusb10_cancel_all_transfer_locked(struct libusb20_device *pdev, struct libusb_device *dev); 143 144 #endif /* __LIBUSB10_H__ */ 145