smapi.h revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2003 Matthew N. Dodd <winter@freebsd.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/11/sys/i386/include/smapi.h 330897 2018-03-14 03:19:51Z eadler $
29 */
30
31#ifndef _MACHINE_SMAPI_H_
32#define	_MACHINE_SMAPI_H_
33
34#ifndef _KERNEL
35#include <sys/types.h>
36#endif
37#include <sys/ioccom.h>
38
39struct smapi_bios_header {
40	u_int8_t	signature[4];	/* '$SMB' */
41	u_int8_t	version_major;
42	u_int8_t	version_minor;
43	u_int8_t	length;
44	u_int8_t	checksum;
45	u_int16_t	information;
46#define	SMAPI_REAL_VM86		0x0001
47#define	SMAPI_PROT_16BIT	0x0002
48#define	SMAPI_PROT_32BIT	0x0004
49	u_int16_t	reserved1;
50
51	u_int16_t	real16_offset;
52	u_int16_t	real16_segment;
53
54	u_int16_t	reserved2;
55
56	u_int16_t	prot16_offset;
57	u_int32_t	prot16_segment;
58
59	u_int32_t	prot32_offset;
60	u_int32_t	prot32_segment;
61
62} __packed;
63
64struct smapi_bios_parameter {
65	union {
66		struct {
67			u_int8_t func;
68			u_int8_t sub_func;
69		} in;
70		struct {
71			u_int8_t rc;
72			u_int8_t sub_rc;
73		} out;
74	} type;
75
76	u_int16_t	param1;
77	u_int16_t	param2;
78	u_int16_t	param3;
79
80	u_int32_t	param4;
81	u_int32_t	param5;
82
83} __packed;
84
85#define	cmd_func	type.in.func
86#define	cmd_sub_func	type.in.sub_func
87#define	rsp_rc		type.out.rc
88#define	rsp_sub_rc	type.out.sub_rc
89
90#define	SMAPIOGHEADER		_IOR('$', 0, struct smapi_bios_header)
91#define SMAPIOCGFUNCTION	_IOWR('$', 1, struct smapi_bios_parameter)
92
93#endif	/* _MACHINE_SMAPI_H_ */
94