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 */ 213