/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 1998 Nicolas Souchu
 * 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 __SMB_H
#define __SMB_H

#include <sys/ioccom.h>

struct smbcmd {
        u_char cmd;
        u_char reserved;
        u_short op;
        union {
                char    byte;
                char    buf[2];
                short   word;
        } wdata;
        union {
                char    byte;
                char    buf[2];
                short   word;
        } rdata;
        int  slave;
        char *wbuf;     /* use wdata if NULL */
        int  wcount;
        char *rbuf;     /* use rdata if NULL */
        int  rcount;
};

/*
 * SMBus spec 2.0 says block transfers may be at most 32 bytes.
 */
#define SMB_MAXBLOCKSIZE        32

#define SMB_QUICK_WRITE _IOW('i', 1, struct smbcmd)
#define SMB_QUICK_READ  _IOW('i', 2, struct smbcmd)
#define SMB_SENDB       _IOW('i', 3, struct smbcmd)
#define SMB_RECVB       _IOWR('i', 4, struct smbcmd)
#define SMB_WRITEB      _IOW('i', 5, struct smbcmd)
#define SMB_WRITEW      _IOW('i', 6, struct smbcmd)
#define SMB_READB       _IOWR('i', 7, struct smbcmd)
#define SMB_READW       _IOWR('i', 8, struct smbcmd)
#define SMB_PCALL       _IOWR('i', 9, struct smbcmd)
#define SMB_BWRITE      _IOW('i', 10, struct smbcmd)
#define SMB_BREAD       _IOWR('i', 11, struct smbcmd)
#define SMB_OLD_TRANS   _IOWR('i', 12, struct smbcmd)

#endif