1/*
2 * Include file for the interface to an APM BIOS
3 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2, or (at your option) any
8 * later version.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 */
15#ifndef _LINUX_APM_H
16#define _LINUX_APM_H
17
18#include <uapi/linux/apm_bios.h>
19
20
21#define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8)
22#define APM_CS_16 (APM_CS + 8)
23#define APM_DS (APM_CS_16 + 8)
24
25/* Results of APM Installation Check */
26#define APM_16_BIT_SUPPORT 0x0001
27#define APM_32_BIT_SUPPORT 0x0002
28#define APM_IDLE_SLOWS_CLOCK 0x0004
29#define APM_BIOS_DISABLED 0x0008
30#define APM_BIOS_DISENGAGED 0x0010
31
32/*
33 * Data for APM that is persistent across module unload/load
34 */
35struct apm_info {
36 struct apm_bios_info bios;
37 unsigned short connection_version;
38 int get_power_status_broken;
39 int get_power_status_swabinminutes;
40 int allow_ints;
41 int forbid_idle;
42 int realmode_power_off;
43 int disabled;
44};
45
46/*
47 * The APM function codes
48 */
49#define APM_FUNC_INST_CHECK 0x5300
50#define APM_FUNC_REAL_CONN 0x5301
51#define APM_FUNC_16BIT_CONN 0x5302
52#define APM_FUNC_32BIT_CONN 0x5303
53#define APM_FUNC_DISCONN 0x5304
54#define APM_FUNC_IDLE 0x5305
55#define APM_FUNC_BUSY 0x5306
56#define APM_FUNC_SET_STATE 0x5307
57#define APM_FUNC_ENABLE_PM 0x5308
58#define APM_FUNC_RESTORE_BIOS 0x5309
59#define APM_FUNC_GET_STATUS 0x530a
60#define APM_FUNC_GET_EVENT 0x530b
61#define APM_FUNC_GET_STATE 0x530c
62#define APM_FUNC_ENABLE_DEV_PM 0x530d
63#define APM_FUNC_VERSION 0x530e
64#define APM_FUNC_ENGAGE_PM 0x530f
65#define APM_FUNC_GET_CAP 0x5310
66#define APM_FUNC_RESUME_TIMER 0x5311
67#define APM_FUNC_RESUME_ON_RING 0x5312
68#define APM_FUNC_TIMER 0x5313
69
70/*
71 * Function code for APM_FUNC_RESUME_TIMER
72 */
73#define APM_FUNC_DISABLE_TIMER 0
74#define APM_FUNC_GET_TIMER 1
75#define APM_FUNC_SET_TIMER 2
76
77/*
78 * Function code for APM_FUNC_RESUME_ON_RING
79 */
80#define APM_FUNC_DISABLE_RING 0
81#define APM_FUNC_ENABLE_RING 1
82#define APM_FUNC_GET_RING 2
83
84/*
85 * Function code for APM_FUNC_TIMER_STATUS
86 */
87#define APM_FUNC_TIMER_DISABLE 0
88#define APM_FUNC_TIMER_ENABLE 1
89#define APM_FUNC_TIMER_GET 2
90
91/*
92 * in arch/i386/kernel/setup.c
93 */
94extern struct apm_info apm_info;
95
96/*
97 * This is the "All Devices" ID communicated to the BIOS
98 */
99#define APM_DEVICE_BALL ((apm_info.connection_version > 0x0100) ? \
100 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
101#endif /* LINUX_APM_H */
102