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 #define APM_CS          (GDT_ENTRY_APMBIOS_BASE * 8)
  25 #define APM_CS_16       (APM_CS + 8)
  26 #define APM_DS          (APM_CS_16 + 8)
  27
  28 struct apm_bios_info {
  29         unsigned short  version;
  30         unsigned short  cseg;
  31         unsigned long   offset;
  32         unsigned short  cseg_16;
  33         unsigned short  dseg;
  34         unsigned short  flags;
  35         unsigned short  cseg_len;
  36         unsigned short  cseg_16_len;
  37         unsigned short  dseg_len;
  38 };
  39
  40 /* Results of APM Installation Check */
  41 #define APM_16_BIT_SUPPORT      0x0001
  42 #define APM_32_BIT_SUPPORT      0x0002
  43 #define APM_IDLE_SLOWS_CLOCK    0x0004
  44 #define APM_BIOS_DISABLED       0x0008
  45 #define APM_BIOS_DISENGAGED     0x0010
  46
  47 /*
  48  * Data for APM that is persistent across module unload/load
  49  */
  50 struct apm_info {
  51         struct apm_bios_info    bios;
  52         unsigned short          connection_version;
  53         int                     get_power_status_broken;
  54         int                     get_power_status_swabinminutes;
  55         int                     allow_ints;
  56         int                     forbid_idle;
  57         int                     realmode_power_off;
  58         int                     disabled;
  59 };
  60
  61 /*
  62  * The APM function codes
  63  */
  64 #define APM_FUNC_INST_CHECK     0x5300
  65 #define APM_FUNC_REAL_CONN      0x5301
  66 #define APM_FUNC_16BIT_CONN     0x5302
  67 #define APM_FUNC_32BIT_CONN     0x5303
  68 #define APM_FUNC_DISCONN        0x5304
  69 #define APM_FUNC_IDLE           0x5305
  70 #define APM_FUNC_BUSY           0x5306
  71 #define APM_FUNC_SET_STATE      0x5307
  72 #define APM_FUNC_ENABLE_PM      0x5308
  73 #define APM_FUNC_RESTORE_BIOS   0x5309
  74 #define APM_FUNC_GET_STATUS     0x530a
  75 #define APM_FUNC_GET_EVENT      0x530b
  76 #define APM_FUNC_GET_STATE      0x530c
  77 #define APM_FUNC_ENABLE_DEV_PM  0x530d
  78 #define APM_FUNC_VERSION        0x530e
  79 #define APM_FUNC_ENGAGE_PM      0x530f
  80 #define APM_FUNC_GET_CAP        0x5310
  81 #define APM_FUNC_RESUME_TIMER   0x5311
  82 #define APM_FUNC_RESUME_ON_RING 0x5312
  83 #define APM_FUNC_TIMER          0x5313
  84
  85 /*
  86  * Function code for APM_FUNC_RESUME_TIMER
  87  */
  88 #define APM_FUNC_DISABLE_TIMER  0
  89 #define APM_FUNC_GET_TIMER      1
  90 #define APM_FUNC_SET_TIMER      2
  91
  92 /*
  93  * Function code for APM_FUNC_RESUME_ON_RING
  94  */
  95 #define APM_FUNC_DISABLE_RING   0
  96 #define APM_FUNC_ENABLE_RING    1
  97 #define APM_FUNC_GET_RING       2
  98
  99 /*
 100  * Function code for APM_FUNC_TIMER_STATUS
 101  */
 102 #define APM_FUNC_TIMER_DISABLE  0
 103 #define APM_FUNC_TIMER_ENABLE   1
 104 #define APM_FUNC_TIMER_GET      2
 105
 106 /*
 107  * in arch/i386/kernel/setup.c
 108  */
 109 extern struct apm_info  apm_info;
 110
 111 #endif  /* __KERNEL__ */
 112
 113 /*
 114  * Power states
 115  */
 116 #define APM_STATE_READY         0x0000
 117 #define APM_STATE_STANDBY       0x0001
 118 #define APM_STATE_SUSPEND       0x0002
 119 #define APM_STATE_OFF           0x0003
 120 #define APM_STATE_BUSY          0x0004
 121 #define APM_STATE_REJECT        0x0005
 122 #define APM_STATE_OEM_SYS       0x0020
 123 #define APM_STATE_OEM_DEV       0x0040
 124
 125 #define APM_STATE_DISABLE       0x0000
 126 #define APM_STATE_ENABLE        0x0001
 127
 128 #define APM_STATE_DISENGAGE     0x0000
 129 #define APM_STATE_ENGAGE        0x0001
 130
 131 /*
 132  * Events (results of Get PM Event)
 133  */
 134 #define APM_SYS_STANDBY         0x0001
 135 #define APM_SYS_SUSPEND         0x0002
 136 #define APM_NORMAL_RESUME       0x0003
 137 #define APM_CRITICAL_RESUME     0x0004
 138 #define APM_LOW_BATTERY         0x0005
 139 #define APM_POWER_STATUS_CHANGE 0x0006
 140 #define APM_UPDATE_TIME         0x0007
 141 #define APM_CRITICAL_SUSPEND    0x0008
 142 #define APM_USER_STANDBY        0x0009
 143 #define APM_USER_SUSPEND        0x000a
 144 #define APM_STANDBY_RESUME      0x000b
 145 #define APM_CAPABILITY_CHANGE   0x000c
 146
 147 /*
 148  * Error codes
 149  */
 150 #define APM_SUCCESS             0x00
 151 #define APM_DISABLED            0x01
 152 #define APM_CONNECTED           0x02
 153 #define APM_NOT_CONNECTED       0x03
 154 #define APM_16_CONNECTED        0x05
 155 #define APM_16_UNSUPPORTED      0x06
 156 #define APM_32_CONNECTED        0x07
 157 #define APM_32_UNSUPPORTED      0x08
 158 #define APM_BAD_DEVICE          0x09
 159 #define APM_BAD_PARAM           0x0a
 160 #define APM_NOT_ENGAGED         0x0b
 161 #define APM_BAD_FUNCTION        0x0c
 162 #define APM_RESUME_DISABLED     0x0d
 163 #define APM_NO_ERROR            0x53
 164 #define APM_BAD_STATE           0x60
 165 #define APM_NO_EVENTS           0x80
 166 #define APM_NOT_PRESENT         0x86
 167
 168 /*
 169  * APM Device IDs
 170  */
 171 #define APM_DEVICE_BIOS         0x0000
 172 #define APM_DEVICE_ALL          0x0001
 173 #define APM_DEVICE_DISPLAY      0x0100
 174 #define APM_DEVICE_STORAGE      0x0200
 175 #define APM_DEVICE_PARALLEL     0x0300
 176 #define APM_DEVICE_SERIAL       0x0400
 177 #define APM_DEVICE_NETWORK      0x0500
 178 #define APM_DEVICE_PCMCIA       0x0600
 179 #define APM_DEVICE_BATTERY      0x8000
 180 #define APM_DEVICE_OEM          0xe000
 181 #define APM_DEVICE_OLD_ALL      0xffff
 182 #define APM_DEVICE_CLASS        0x00ff
 183 #define APM_DEVICE_MASK         0xff00
 184
 185 #ifdef __KERNEL__
 186 /*
 187  * This is the "All Devices" ID communicated to the BIOS
 188  */
 189 #define APM_DEVICE_BALL         ((apm_info.connection_version > 0x0100) ? \
 190                                  APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
 191 #endif
 192
 193 /*
 194  * Battery status
 195  */
 196 #define APM_MAX_BATTERIES       2
 197
 198 /*
 199  * APM defined capability bit flags
 200  */
 201 #define APM_CAP_GLOBAL_STANDBY          0x0001
 202 #define APM_CAP_GLOBAL_SUSPEND          0x0002
 203 #define APM_CAP_RESUME_STANDBY_TIMER    0x0004 /* Timer resume from standby */
 204 #define APM_CAP_RESUME_SUSPEND_TIMER    0x0008 /* Timer resume from suspend */
 205 #define APM_CAP_RESUME_STANDBY_RING     0x0010 /* Resume on Ring fr standby */
 206 #define APM_CAP_RESUME_SUSPEND_RING     0x0020 /* Resume on Ring fr suspend */
 207 #define APM_CAP_RESUME_STANDBY_PCMCIA   0x0040 /* Resume on PCMCIA Ring */
 208 #define APM_CAP_RESUME_SUSPEND_PCMCIA   0x0080 /* Resume on PCMCIA Ring */
 209
 210 /*
 211  * ioctl operations
 212  */
 213 #include <linux/ioctl.h>
 214
 215 #define APM_IOC_STANDBY         _IO('A', 1)
 216 #define APM_IOC_SUSPEND         _IO('A', 2)
 217
 218 #endif  /* LINUX_APM_H */