linux/include/linux/apm_bios.h
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   1#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
  19#include <linux/types.h>
  20
  21typedef unsigned short  apm_event_t;
  22typedef unsigned short  apm_eventinfo_t;
  23
  24struct apm_bios_info {
  25        __u16   version;
  26        __u16   cseg;
  27        __u32   offset;
  28        __u16   cseg_16;
  29        __u16   dseg;
  30        __u16   flags;
  31        __u16   cseg_len;
  32        __u16   cseg_16_len;
  33        __u16   dseg_len;
  34};
  35
  36#ifdef __KERNEL__
  37
  38#define APM_CS          (GDT_ENTRY_APMBIOS_BASE * 8)
  39#define APM_CS_16       (APM_CS + 8)
  40#define APM_DS          (APM_CS_16 + 8)
  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 */
 221
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