lib/libusb/libusb10.h

   1 /* $FreeBSD: head/lib/libusb/libusb10.h 248236 2013-03-13 12:23:14Z hselasky $ */
   2 /*-
   3  * Copyright (c) 2009 Sylvestre Gallon. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   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.
  13  *
  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
  24  * SUCH DAMAGE.
  25  */
  26
  27 #ifndef __LIBUSB10_H__
  28 #define __LIBUSB10_H__
  29
  30 #ifndef LIBUSB_GLOBAL_INCLUDE_FILE
  31 #include <sys/queue.h>
  32 #endif
  33
  34 #define GET_CONTEXT(ctx) (((ctx) == NULL) ? usbi_default_context : (ctx))
  35 #define UNEXPORTED __attribute__((__visibility__("hidden")))
  36 #define CTX_LOCK(ctx) pthread_mutex_lock(&(ctx)->ctx_lock)
  37 #define CTX_TRYLOCK(ctx) pthread_mutex_trylock(&(ctx)->ctx_lock)
  38 #define CTX_UNLOCK(ctx) pthread_mutex_unlock(&(ctx)->ctx_lock)
  39 #define HOTPLUG_LOCK(ctx) pthread_mutex_lock(&(ctx)->hotplug_lock)
  40 #define HOTPLUG_UNLOCK(ctx) pthread_mutex_unlock(&(ctx)->hotplug_lock)
  41
  42 #define DPRINTF(ctx, dbg, format, args...) do { \
  43     if ((ctx)->debug == dbg) {                  \
  44         switch (dbg) {                          \
  45         case LIBUSB_DEBUG_FUNCTION:             \
  46                 printf("LIBUSB_FUNCTION: "      \
  47                     format "\n", ## args);      \
  48                 break;                          \
  49         case LIBUSB_DEBUG_TRANSFER:             \
  50                 printf("LIBUSB_TRANSFER: "      \
  51                     format "\n", ## args);      \
  52                 break;                          \
  53         default:                                \
  54                 break;                          \
  55         }                                       \
  56     }                                           \
  57 } while(0)
  58
  59 /* internal structures */
  60
  61 struct libusb_super_pollfd {
  62         TAILQ_ENTRY(libusb_super_pollfd) entry;
  63         struct libusb20_device *pdev;
  64         struct libusb_pollfd pollfd;
  65 };
  66
  67 struct libusb_super_transfer {
  68         TAILQ_ENTRY(libusb_super_transfer) entry;
  69         uint8_t *curr_data;
  70         uint32_t rem_len;
  71         uint32_t last_len;
  72         uint8_t state;
  73 #define LIBUSB_SUPER_XFER_ST_NONE 0
  74 #define LIBUSB_SUPER_XFER_ST_PEND 1
  75 };
  76
  77 struct libusb_hotplug_callback_handle_struct {
  78         TAILQ_ENTRY(libusb_hotplug_callback_handle_struct) entry;
  79         int events;
  80         int vendor;
  81         int product;
  82         int devclass;
  83         libusb_hotplug_callback_fn fn;
  84         void *user_data;
  85 };
  86
  87 struct libusb_context {
  88         int     debug;
  89         int     debug_fixed;
  90         int     ctrl_pipe[2];
  91         int     tr_done_ref;
  92         int     tr_done_gen;
  93
  94         pthread_mutex_t ctx_lock;
  95         pthread_mutex_t hotplug_lock;
  96         pthread_cond_t ctx_cond;
  97         pthread_t hotplug_handler;
  98         pthread_t ctx_handler;
  99 #define NO_THREAD ((pthread_t)-1)
 100
 101         TAILQ_HEAD(, libusb_super_pollfd) pollfds;
 102         TAILQ_HEAD(, libusb_super_transfer) tr_done;
 103         TAILQ_HEAD(, libusb_hotplug_callback_handle_struct) hotplug_cbh;
 104         TAILQ_HEAD(, libusb_device) hotplug_devs;
 105
 106         struct libusb_super_pollfd ctx_poll;
 107
 108         libusb_pollfd_added_cb fd_added_cb;
 109         libusb_pollfd_removed_cb fd_removed_cb;
 110         void   *fd_cb_user_data;
 111 };
 112
 113 struct libusb_device {
 114         int     refcnt;
 115
 116         uint32_t claimed_interfaces;
 117
 118         struct libusb_super_pollfd dev_poll;
 119
 120         struct libusb_context *ctx;
 121
 122         TAILQ_ENTRY(libusb_device) hotplug_entry;
 123
 124         TAILQ_HEAD(, libusb_super_transfer) tr_head;
 125
 126         struct libusb20_device *os_priv;
 127 };
 128
 129 extern struct libusb_context *usbi_default_context;
 130
 131 void    libusb10_add_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd, struct libusb20_device *pdev, int fd, short events);
 132 void    libusb10_remove_pollfd(libusb_context *ctx, struct libusb_super_pollfd *pollfd);
 133 void    libusb10_cancel_all_transfer(libusb_device *dev);
 134
 135 #endif                                  /* __LIBUSB10_H__ */