sys/i386/include/smapi.h

root/sys/i386/include/smapi.h
/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2003 Matthew N. Dodd <winter@freebsd.org>
 * 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 _MACHINE_SMAPI_H_
#define _MACHINE_SMAPI_H_

#ifndef _KERNEL
#include <sys/types.h>
#endif
#include <sys/ioccom.h>

struct smapi_bios_header {
        u_int8_t        signature[4];   /* '$SMB' */
        u_int8_t        version_major;
        u_int8_t        version_minor;
        u_int8_t        length;
        u_int8_t        checksum;
        u_int16_t       information;
#define SMAPI_REAL_VM86         0x0001
#define SMAPI_PROT_16BIT        0x0002
#define SMAPI_PROT_32BIT        0x0004
        u_int16_t       reserved1;

        u_int16_t       real16_offset;
        u_int16_t       real16_segment;

        u_int16_t       reserved2;

        u_int16_t       prot16_offset;
        u_int32_t       prot16_segment;

        u_int32_t       prot32_offset;
        u_int32_t       prot32_segment;

} __packed;

struct smapi_bios_parameter {
        union {
                struct {
                        u_int8_t func;
                        u_int8_t sub_func;
                } in;
                struct {
                        u_int8_t rc;
                        u_int8_t sub_rc;
                } out;
        } type;

        u_int16_t       param1;
        u_int16_t       param2;
        u_int16_t       param3;

        u_int32_t       param4;
        u_int32_t       param5;

} __packed;

#define cmd_func        type.in.func
#define cmd_sub_func    type.in.sub_func
#define rsp_rc          type.out.rc
#define rsp_sub_rc      type.out.sub_rc

#define SMAPIOGHEADER           _IOR('$', 0, struct smapi_bios_header)
#define SMAPIOCGFUNCTION        _IOWR('$', 1, struct smapi_bios_parameter)

#endif  /* _MACHINE_SMAPI_H_ */
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