/*-
 * Copyright (c) 2010-2012 Hans Petter Selasky. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _CUSE_DEFS_H_
#define _CUSE_DEFS_H_

#define CUSE_VERSION            0x000125

#define CUSE_ERR_NONE           0
#define CUSE_ERR_BUSY           -1
#define CUSE_ERR_WOULDBLOCK     -2
#define CUSE_ERR_INVALID        -3
#define CUSE_ERR_NO_MEMORY      -4
#define CUSE_ERR_FAULT          -5
#define CUSE_ERR_SIGNAL         -6
#define CUSE_ERR_OTHER          -7
#define CUSE_ERR_NOT_LOADED     -8
#define CUSE_ERR_NO_DEVICE      -9

#define CUSE_POLL_NONE          0
#define CUSE_POLL_READ          1
#define CUSE_POLL_WRITE         2
#define CUSE_POLL_ERROR         4

#define CUSE_FFLAG_NONE         0
#define CUSE_FFLAG_READ         1
#define CUSE_FFLAG_WRITE        2
#define CUSE_FFLAG_NONBLOCK     4
#define CUSE_FFLAG_COMPAT32     8 /* peer is running in 32-bit compat mode */

#define CUSE_DBG_NONE           0
#define CUSE_DBG_FULL           1

/* maximum data transfer length */
#define CUSE_LENGTH_MAX         0x7FFFFFFFU

enum {
        CUSE_CMD_NONE,
        CUSE_CMD_OPEN,
        CUSE_CMD_CLOSE,
        CUSE_CMD_READ,
        CUSE_CMD_WRITE,
        CUSE_CMD_IOCTL,
        CUSE_CMD_POLL,
        CUSE_CMD_SIGNAL,
        CUSE_CMD_SYNC,
        CUSE_CMD_MAX,
};

#define CUSE_MAKE_ID(a,b,c,u) ((((a) & 0x7F) << 24)| \
    (((b) & 0xFF) << 16)|(((c) & 0xFF) << 8)|((u) & 0xFF))

#define CUSE_ID_MASK 0x7FFFFF00U

/*
 * The following ID's are defined:
 * ===============================
 */
#define CUSE_ID_DEFAULT(what) CUSE_MAKE_ID(0,0,what,0)
#define CUSE_ID_WEBCAMD(what) CUSE_MAKE_ID('W','C',what,0)      /* Used by Webcamd. */
#define CUSE_ID_SUNDTEK(what) CUSE_MAKE_ID('S','K',what,0)      /* Used by Sundtek. */
#define CUSE_ID_CX88(what) CUSE_MAKE_ID('C','X',what,0)         /* Used by cx88 driver. */
#define CUSE_ID_UHIDD(what) CUSE_MAKE_ID('U','D',what,0)        /* Used by uhidd. */

#endif                                  /* _CUSE_DEFS_H_ */