include/linux/apm_bios.h

   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 typedef unsigned short  apm_event_t;
  20 typedef unsigned short  apm_eventinfo_t;
  21
  22 #ifdef __KERNEL__
  23
  24 #include <linux/types.h>
  25
  26 #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
  30 struct apm_bios_info {
  31         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;
  40 };
  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  */
  52 struct 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  */
 111 extern 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 */