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   * SPDX-License-Identifier:    GPL-2.0+
   9  */
  10
  11 #include <linux/types.h>
  12
  13 typedef unsigned short  apm_event_t;
  14 typedef unsigned short  apm_eventinfo_t;
  15
  16 struct apm_bios_info {
  17         __u16   version;
  18         __u16   cseg;
  19         __u32   offset;
  20         __u16   cseg_16;
  21         __u16   dseg;
  22         __u16   flags;
  23         __u16   cseg_len;
  24         __u16   cseg_16_len;
  25         __u16   dseg_len;
  26 };
  27
  28 #ifdef __KERNEL__
  29
  30 #define APM_CS          (GDT_ENTRY_APMBIOS_BASE * 8)
  31 #define APM_CS_16       (APM_CS + 8)
  32 #define APM_DS          (APM_CS_16 + 8)
  33
  34 /* Results of APM Installation Check */
  35 #define APM_16_BIT_SUPPORT      0x0001
  36 #define APM_32_BIT_SUPPORT      0x0002
  37 #define APM_IDLE_SLOWS_CLOCK    0x0004
  38 #define APM_BIOS_DISABLED       0x0008
  39 #define APM_BIOS_DISENGAGED     0x0010
  40
  41 /*
  42  * Data for APM that is persistent across module unload/load
  43  */
  44 struct apm_info {
  45         struct apm_bios_info    bios;
  46         unsigned short          connection_version;
  47         int                     get_power_status_broken;
  48         int                     get_power_status_swabinminutes;
  49         int                     allow_ints;
  50         int                     forbid_idle;
  51         int                     realmode_power_off;
  52         int                     disabled;
  53 };
  54
  55 /*
  56  * The APM function codes
  57  */
  58 #define APM_FUNC_INST_CHECK     0x5300
  59 #define APM_FUNC_REAL_CONN      0x5301
  60 #define APM_FUNC_16BIT_CONN     0x5302
  61 #define APM_FUNC_32BIT_CONN     0x5303
  62 #define APM_FUNC_DISCONN        0x5304
  63 #define APM_FUNC_IDLE           0x5305
  64 #define APM_FUNC_BUSY           0x5306
  65 #define APM_FUNC_SET_STATE      0x5307
  66 #define APM_FUNC_ENABLE_PM      0x5308
  67 #define APM_FUNC_RESTORE_BIOS   0x5309
  68 #define APM_FUNC_GET_STATUS     0x530a
  69 #define APM_FUNC_GET_EVENT      0x530b
  70 #define APM_FUNC_GET_STATE      0x530c
  71 #define APM_FUNC_ENABLE_DEV_PM  0x530d
  72 #define APM_FUNC_VERSION        0x530e
  73 #define APM_FUNC_ENGAGE_PM      0x530f
  74 #define APM_FUNC_GET_CAP        0x5310
  75 #define APM_FUNC_RESUME_TIMER   0x5311
  76 #define APM_FUNC_RESUME_ON_RING 0x5312
  77 #define APM_FUNC_TIMER          0x5313
  78
  79 /*
  80  * Function code for APM_FUNC_RESUME_TIMER
  81  */
  82 #define APM_FUNC_DISABLE_TIMER  0
  83 #define APM_FUNC_GET_TIMER      1
  84 #define APM_FUNC_SET_TIMER      2
  85
  86 /*
  87  * Function code for APM_FUNC_RESUME_ON_RING
  88  */
  89 #define APM_FUNC_DISABLE_RING   0
  90 #define APM_FUNC_ENABLE_RING    1
  91 #define APM_FUNC_GET_RING       2
  92
  93 /*
  94  * Function code for APM_FUNC_TIMER_STATUS
  95  */
  96 #define APM_FUNC_TIMER_DISABLE  0
  97 #define APM_FUNC_TIMER_ENABLE   1
  98 #define APM_FUNC_TIMER_GET      2
  99
 100 /*
 101  * in arch/i386/kernel/setup.c
 102  */
 103 extern struct apm_info  apm_info;
 104
 105 #endif  /* __KERNEL__ */
 106
 107 /*
 108  * Power states
 109  */
 110 #define APM_STATE_READY         0x0000
 111 #define APM_STATE_STANDBY       0x0001
 112 #define APM_STATE_SUSPEND       0x0002
 113 #define APM_STATE_OFF           0x0003
 114 #define APM_STATE_BUSY          0x0004
 115 #define APM_STATE_REJECT        0x0005
 116 #define APM_STATE_OEM_SYS       0x0020
 117 #define APM_STATE_OEM_DEV       0x0040
 118
 119 #define APM_STATE_DISABLE       0x0000
 120 #define APM_STATE_ENABLE        0x0001
 121
 122 #define APM_STATE_DISENGAGE     0x0000
 123 #define APM_STATE_ENGAGE        0x0001
 124
 125 /*
 126  * Events (results of Get PM Event)
 127  */
 128 #define APM_SYS_STANDBY         0x0001
 129 #define APM_SYS_SUSPEND         0x0002
 130 #define APM_NORMAL_RESUME       0x0003
 131 #define APM_CRITICAL_RESUME     0x0004
 132 #define APM_LOW_BATTERY         0x0005
 133 #define APM_POWER_STATUS_CHANGE 0x0006
 134 #define APM_UPDATE_TIME         0x0007
 135 #define APM_CRITICAL_SUSPEND    0x0008
 136 #define APM_USER_STANDBY        0x0009
 137 #define APM_USER_SUSPEND        0x000a
 138 #define APM_STANDBY_RESUME      0x000b
 139 #define APM_CAPABILITY_CHANGE   0x000c
 140
 141 /*
 142  * Error codes
 143  */
 144 #define APM_SUCCESS             0x00
 145 #define APM_DISABLED            0x01
 146 #define APM_CONNECTED           0x02
 147 #define APM_NOT_CONNECTED       0x03
 148 #define APM_16_CONNECTED        0x05
 149 #define APM_16_UNSUPPORTED      0x06
 150 #define APM_32_CONNECTED        0x07
 151 #define APM_32_UNSUPPORTED      0x08
 152 #define APM_BAD_DEVICE          0x09
 153 #define APM_BAD_PARAM           0x0a
 154 #define APM_NOT_ENGAGED         0x0b
 155 #define APM_BAD_FUNCTION        0x0c
 156 #define APM_RESUME_DISABLED     0x0d
 157 #define APM_NO_ERROR            0x53
 158 #define APM_BAD_STATE           0x60
 159 #define APM_NO_EVENTS           0x80
 160 #define APM_NOT_PRESENT         0x86
 161
 162 /*
 163  * APM Device IDs
 164  */
 165 #define APM_DEVICE_BIOS         0x0000
 166 #define APM_DEVICE_ALL          0x0001
 167 #define APM_DEVICE_DISPLAY      0x0100
 168 #define APM_DEVICE_STORAGE      0x0200
 169 #define APM_DEVICE_PARALLEL     0x0300
 170 #define APM_DEVICE_SERIAL       0x0400
 171 #define APM_DEVICE_NETWORK      0x0500
 172 #define APM_DEVICE_PCMCIA       0x0600
 173 #define APM_DEVICE_BATTERY      0x8000
 174 #define APM_DEVICE_OEM          0xe000
 175 #define APM_DEVICE_OLD_ALL      0xffff
 176 #define APM_DEVICE_CLASS        0x00ff
 177 #define APM_DEVICE_MASK         0xff00
 178
 179 #ifdef __KERNEL__
 180 /*
 181  * This is the "All Devices" ID communicated to the BIOS
 182  */
 183 #define APM_DEVICE_BALL         ((apm_info.connection_version > 0x0100) ? \
 184                                  APM_DEVICE_ALL : APM_DEVICE_OLD_ALL)
 185 #endif
 186
 187 /*
 188  * Battery status
 189  */
 190 #define APM_MAX_BATTERIES       2
 191
 192 /*
 193  * APM defined capability bit flags
 194  */
 195 #define APM_CAP_GLOBAL_STANDBY          0x0001
 196 #define APM_CAP_GLOBAL_SUSPEND          0x0002
 197 #define APM_CAP_RESUME_STANDBY_TIMER    0x0004 /* Timer resume from standby */
 198 #define APM_CAP_RESUME_SUSPEND_TIMER    0x0008 /* Timer resume from suspend */
 199 #define APM_CAP_RESUME_STANDBY_RING     0x0010 /* Resume on Ring fr standby */
 200 #define APM_CAP_RESUME_SUSPEND_RING     0x0020 /* Resume on Ring fr suspend */
 201 #define APM_CAP_RESUME_STANDBY_PCMCIA   0x0040 /* Resume on PCMCIA Ring */
 202 #define APM_CAP_RESUME_SUSPEND_PCMCIA   0x0080 /* Resume on PCMCIA Ring */
 203
 204 /*
 205  * ioctl operations
 206  */
 207 #include <linux/ioctl.h>
 208
 209 #define APM_IOC_STANDBY         _IO('A', 1)
 210 #define APM_IOC_SUSPEND         _IO('A', 2)
 211
 212 #endif  /* LINUX_APM_H */