include/linux/apm_bios.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Include file for the interface to an APM BIOS
   4  * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au)
   5  */
   6 #ifndef _LINUX_APM_H
   7 #define _LINUX_APM_H
   8
   9 #include <uapi/linux/apm_bios.h>
  10
  11
  12 #define APM_CS          (GDT_ENTRY_APMBIOS_BASE * 8)
  13 #define APM_CS_16       (APM_CS + 8)
  14 #define APM_DS          (APM_CS_16 + 8)
  15
  16 /* Results of APM Installation Check */
  17 #define APM_16_BIT_SUPPORT      0x0001
  18 #define APM_32_BIT_SUPPORT      0x0002
  19 #define APM_IDLE_SLOWS_CLOCK    0x0004
  20 #define APM_BIOS_DISABLED       0x0008
  21 #define APM_BIOS_DISENGAGED     0x0010
  22
  23 /*
  24  * Data for APM that is persistent across module unload/load
  25  */
  26 struct apm_info {
  27         struct apm_bios_info    bios;
  28         unsigned short          connection_version;
  29         int                     get_power_status_broken;
  30         int                     get_power_status_swabinminutes;
  31         int                     allow_ints;
  32         int                     forbid_idle;
  33         int                     realmode_power_off;
  34         int                     disabled;
  35 };
  36
  37 /*
  38  * The APM function codes
  39  */
  40 #define APM_FUNC_INST_CHECK     0x5300
  41 #define APM_FUNC_REAL_CONN      0x5301
  42 #define APM_FUNC_16BIT_CONN     0x5302
  43 #define APM_FUNC_32BIT_CONN     0x5303
  44 #define APM_FUNC_DISCONN        0x5304
  45 #define APM_FUNC_IDLE           0x5305
  46 #define APM_FUNC_BUSY           0x5306
  47 #define APM_FUNC_SET_STATE      0x5307
  48 #define APM_FUNC_ENABLE_PM      0x5308
  49 #define APM_FUNC_RESTORE_BIOS   0x5309
  50 #define APM_FUNC_GET_STATUS     0x530a
  51 #define APM_FUNC_GET_EVENT      0x530b
  52 #define APM_FUNC_GET_STATE      0x530c
  53 #define APM_FUNC_ENABLE_DEV_PM  0x530d
  54 #define APM_FUNC_VERSION        0x530e
  55 #define APM_FUNC_ENGAGE_PM      0x530f
  56 #define APM_FUNC_GET_CAP        0x5310
  57 #define APM_FUNC_RESUME_TIMER   0x5311
  58 #define APM_FUNC_RESUME_ON_RING 0x5312
  59 #define APM_FUNC_TIMER          0x5313
  60
  61 /*
  62  * Function code for APM_FUNC_RESUME_TIMER
  63  */
  64 #define APM_FUNC_DISABLE_TIMER  0
  65 #define APM_FUNC_GET_TIMER      1
  66 #define APM_FUNC_SET_TIMER      2
  67
  68 /*
  69  * Function code for APM_FUNC_RESUME_ON_RING
  70  */
  71 #define APM_FUNC_DISABLE_RING   0
  72 #define APM_FUNC_ENABLE_RING    1
  73 #define APM_FUNC_GET_RING       2
  74
  75 /*
  76  * Function code for APM_FUNC_TIMER_STATUS
  77  */
  78 #define APM_FUNC_TIMER_DISABLE  0
  79 #define APM_FUNC_TIMER_ENABLE   1
  80 #define APM_FUNC_TIMER_GET      2
  81
  82 /*
  83  * in arch/i386/kernel/setup.c
  84  */
  85 extern struct apm_info  apm_info;
  86
  87 /*
  88  * This is the "All Devices" ID communicated to the BIOS
  89  */
  90 #define APM_DEVICE_BALL         ((apm_info.connection_version > 0x0100) ? \
  91                                  APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
  92 #endif  /* LINUX_APM_H */