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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _LINUX_APM_H
2#define _LINUX_APM_H
3
4/*
5 * Include file for the interface to an APM BIOS
6 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
11 * later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 */
18
19typedef unsigned short apm_event_t;
20typedef unsigned short apm_eventinfo_t;
21
22#ifdef __KERNEL__
23
H. Peter Anvin4bf3b0b2007-07-25 11:06:02 -070024#include <linux/types.h>
25
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8)
27#define APM_CS_16 (APM_CS + 8)
28#define APM_DS (APM_CS_16 + 8)
29
30struct apm_bios_info {
H. Peter Anvin4bf3b0b2007-07-25 11:06:02 -070031 u16 version;
32 u16 cseg;
33 u32 offset;
34 u16 cseg_16;
35 u16 dseg;
36 u16 flags;
37 u16 cseg_len;
38 u16 cseg_16_len;
39 u16 dseg_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -070040};
41
42/* Results of APM Installation Check */
43#define APM_16_BIT_SUPPORT 0x0001
44#define APM_32_BIT_SUPPORT 0x0002
45#define APM_IDLE_SLOWS_CLOCK 0x0004
46#define APM_BIOS_DISABLED 0x0008
47#define APM_BIOS_DISENGAGED 0x0010
48
49/*
50 * Data for APM that is persistent across module unload/load
51 */
52struct apm_info {
53 struct apm_bios_info bios;
54 unsigned short connection_version;
55 int get_power_status_broken;
56 int get_power_status_swabinminutes;
57 int allow_ints;
58 int forbid_idle;
59 int realmode_power_off;
60 int disabled;
61};
62
63/*
64 * The APM function codes
65 */
66#define APM_FUNC_INST_CHECK 0x5300
67#define APM_FUNC_REAL_CONN 0x5301
68#define APM_FUNC_16BIT_CONN 0x5302
69#define APM_FUNC_32BIT_CONN 0x5303
70#define APM_FUNC_DISCONN 0x5304
71#define APM_FUNC_IDLE 0x5305
72#define APM_FUNC_BUSY 0x5306
73#define APM_FUNC_SET_STATE 0x5307
74#define APM_FUNC_ENABLE_PM 0x5308
75#define APM_FUNC_RESTORE_BIOS 0x5309
76#define APM_FUNC_GET_STATUS 0x530a
77#define APM_FUNC_GET_EVENT 0x530b
78#define APM_FUNC_GET_STATE 0x530c
79#define APM_FUNC_ENABLE_DEV_PM 0x530d
80#define APM_FUNC_VERSION 0x530e
81#define APM_FUNC_ENGAGE_PM 0x530f
82#define APM_FUNC_GET_CAP 0x5310
83#define APM_FUNC_RESUME_TIMER 0x5311
84#define APM_FUNC_RESUME_ON_RING 0x5312
85#define APM_FUNC_TIMER 0x5313
86
87/*
88 * Function code for APM_FUNC_RESUME_TIMER
89 */
90#define APM_FUNC_DISABLE_TIMER 0
91#define APM_FUNC_GET_TIMER 1
92#define APM_FUNC_SET_TIMER 2
93
94/*
95 * Function code for APM_FUNC_RESUME_ON_RING
96 */
97#define APM_FUNC_DISABLE_RING 0
98#define APM_FUNC_ENABLE_RING 1
99#define APM_FUNC_GET_RING 2
100
101/*
102 * Function code for APM_FUNC_TIMER_STATUS
103 */
104#define APM_FUNC_TIMER_DISABLE 0
105#define APM_FUNC_TIMER_ENABLE 1
106#define APM_FUNC_TIMER_GET 2
107
108/*
109 * in arch/i386/kernel/setup.c
110 */
111extern struct apm_info apm_info;
112
113#endif /* __KERNEL__ */
114
115/*
116 * Power states
117 */
118#define APM_STATE_READY 0x0000
119#define APM_STATE_STANDBY 0x0001
120#define APM_STATE_SUSPEND 0x0002
121#define APM_STATE_OFF 0x0003
122#define APM_STATE_BUSY 0x0004
123#define APM_STATE_REJECT 0x0005
124#define APM_STATE_OEM_SYS 0x0020
125#define APM_STATE_OEM_DEV 0x0040
126
127#define APM_STATE_DISABLE 0x0000
128#define APM_STATE_ENABLE 0x0001
129
130#define APM_STATE_DISENGAGE 0x0000
131#define APM_STATE_ENGAGE 0x0001
132
133/*
134 * Events (results of Get PM Event)
135 */
136#define APM_SYS_STANDBY 0x0001
137#define APM_SYS_SUSPEND 0x0002
138#define APM_NORMAL_RESUME 0x0003
139#define APM_CRITICAL_RESUME 0x0004
140#define APM_LOW_BATTERY 0x0005
141#define APM_POWER_STATUS_CHANGE 0x0006
142#define APM_UPDATE_TIME 0x0007
143#define APM_CRITICAL_SUSPEND 0x0008
144#define APM_USER_STANDBY 0x0009
145#define APM_USER_SUSPEND 0x000a
146#define APM_STANDBY_RESUME 0x000b
147#define APM_CAPABILITY_CHANGE 0x000c
148
149/*
150 * Error codes
151 */
152#define APM_SUCCESS 0x00
153#define APM_DISABLED 0x01
154#define APM_CONNECTED 0x02
155#define APM_NOT_CONNECTED 0x03
156#define APM_16_CONNECTED 0x05
157#define APM_16_UNSUPPORTED 0x06
158#define APM_32_CONNECTED 0x07
159#define APM_32_UNSUPPORTED 0x08
160#define APM_BAD_DEVICE 0x09
161#define APM_BAD_PARAM 0x0a
162#define APM_NOT_ENGAGED 0x0b
163#define APM_BAD_FUNCTION 0x0c
164#define APM_RESUME_DISABLED 0x0d
165#define APM_NO_ERROR 0x53
166#define APM_BAD_STATE 0x60
167#define APM_NO_EVENTS 0x80
168#define APM_NOT_PRESENT 0x86
169
170/*
171 * APM Device IDs
172 */
173#define APM_DEVICE_BIOS 0x0000
174#define APM_DEVICE_ALL 0x0001
175#define APM_DEVICE_DISPLAY 0x0100
176#define APM_DEVICE_STORAGE 0x0200
177#define APM_DEVICE_PARALLEL 0x0300
178#define APM_DEVICE_SERIAL 0x0400
179#define APM_DEVICE_NETWORK 0x0500
180#define APM_DEVICE_PCMCIA 0x0600
181#define APM_DEVICE_BATTERY 0x8000
182#define APM_DEVICE_OEM 0xe000
183#define APM_DEVICE_OLD_ALL 0xffff
184#define APM_DEVICE_CLASS 0x00ff
185#define APM_DEVICE_MASK 0xff00
186
187#ifdef __KERNEL__
188/*
189 * This is the "All Devices" ID communicated to the BIOS
190 */
191#define APM_DEVICE_BALL ((apm_info.connection_version > 0x0100) ? \
192 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
193#endif
194
195/*
196 * Battery status
197 */
198#define APM_MAX_BATTERIES 2
199
200/*
201 * APM defined capability bit flags
202 */
203#define APM_CAP_GLOBAL_STANDBY 0x0001
204#define APM_CAP_GLOBAL_SUSPEND 0x0002
205#define APM_CAP_RESUME_STANDBY_TIMER 0x0004 /* Timer resume from standby */
206#define APM_CAP_RESUME_SUSPEND_TIMER 0x0008 /* Timer resume from suspend */
207#define APM_CAP_RESUME_STANDBY_RING 0x0010 /* Resume on Ring fr standby */
208#define APM_CAP_RESUME_SUSPEND_RING 0x0020 /* Resume on Ring fr suspend */
209#define APM_CAP_RESUME_STANDBY_PCMCIA 0x0040 /* Resume on PCMCIA Ring */
210#define APM_CAP_RESUME_SUSPEND_PCMCIA 0x0080 /* Resume on PCMCIA Ring */
211
212/*
213 * ioctl operations
214 */
215#include <linux/ioctl.h>
216
217#define APM_IOC_STANDBY _IO('A', 1)
218#define APM_IOC_SUSPEND _IO('A', 2)
219
220#endif /* LINUX_APM_H */