include/linux/apm_bios.h

   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  */
  35 struct 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  */
  94 extern 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 */