1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 #ifndef _LINUX_APM_H 3 #define _LINUX_APM_H 4 5 /* 6 * Include file for the interface to an APM BIOS 7 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au) 8 */ 9 10 #include <linux/types.h> 11 12 typedef unsigned short apm_event_t; 13 typedef unsigned short apm_eventinfo_t; 14 15 struct apm_bios_info { 16 __u16 version; 17 __u16 cseg; 18 __u32 offset; 19 __u16 cseg_16; 20 __u16 dseg; 21 __u16 flags; 22 __u16 cseg_len; 23 __u16 cseg_16_len; 24 __u16 dseg_len; 25 }; 26 27 #ifdef __KERNEL__ 28 29 #define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8) 30 #define APM_CS_16 (APM_CS + 8) 31 #define APM_DS (APM_CS_16 + 8) 32 33 /* Results of APM Installation Check */ 34 #define APM_16_BIT_SUPPORT 0x0001 35 #define APM_32_BIT_SUPPORT 0x0002 36 #define APM_IDLE_SLOWS_CLOCK 0x0004 37 #define APM_BIOS_DISABLED 0x0008 38 #define APM_BIOS_DISENGAGED 0x0010 39 40 /* 41 * Data for APM that is persistent across module unload/load 42 */ 43 struct apm_info { 44 struct apm_bios_info bios; 45 unsigned short connection_version; 46 int get_power_status_broken; 47 int get_power_status_swabinminutes; 48 int allow_ints; 49 int forbid_idle; 50 int realmode_power_off; 51 int disabled; 52 }; 53 54 /* 55 * The APM function codes 56 */ 57 #define APM_FUNC_INST_CHECK 0x5300 58 #define APM_FUNC_REAL_CONN 0x5301 59 #define APM_FUNC_16BIT_CONN 0x5302 60 #define APM_FUNC_32BIT_CONN 0x5303 61 #define APM_FUNC_DISCONN 0x5304 62 #define APM_FUNC_IDLE 0x5305 63 #define APM_FUNC_BUSY 0x5306 64 #define APM_FUNC_SET_STATE 0x5307 65 #define APM_FUNC_ENABLE_PM 0x5308 66 #define APM_FUNC_RESTORE_BIOS 0x5309 67 #define APM_FUNC_GET_STATUS 0x530a 68 #define APM_FUNC_GET_EVENT 0x530b 69 #define APM_FUNC_GET_STATE 0x530c 70 #define APM_FUNC_ENABLE_DEV_PM 0x530d 71 #define APM_FUNC_VERSION 0x530e 72 #define APM_FUNC_ENGAGE_PM 0x530f 73 #define APM_FUNC_GET_CAP 0x5310 74 #define APM_FUNC_RESUME_TIMER 0x5311 75 #define APM_FUNC_RESUME_ON_RING 0x5312 76 #define APM_FUNC_TIMER 0x5313 77 78 /* 79 * Function code for APM_FUNC_RESUME_TIMER 80 */ 81 #define APM_FUNC_DISABLE_TIMER 0 82 #define APM_FUNC_GET_TIMER 1 83 #define APM_FUNC_SET_TIMER 2 84 85 /* 86 * Function code for APM_FUNC_RESUME_ON_RING 87 */ 88 #define APM_FUNC_DISABLE_RING 0 89 #define APM_FUNC_ENABLE_RING 1 90 #define APM_FUNC_GET_RING 2 91 92 /* 93 * Function code for APM_FUNC_TIMER_STATUS 94 */ 95 #define APM_FUNC_TIMER_DISABLE 0 96 #define APM_FUNC_TIMER_ENABLE 1 97 #define APM_FUNC_TIMER_GET 2 98 99 /* 100 * in arch/i386/kernel/setup.c 101 */ 102 extern struct apm_info apm_info; 103 104 #endif /* __KERNEL__ */ 105 106 /* 107 * Power states 108 */ 109 #define APM_STATE_READY 0x0000 110 #define APM_STATE_STANDBY 0x0001 111 #define APM_STATE_SUSPEND 0x0002 112 #define APM_STATE_OFF 0x0003 113 #define APM_STATE_BUSY 0x0004 114 #define APM_STATE_REJECT 0x0005 115 #define APM_STATE_OEM_SYS 0x0020 116 #define APM_STATE_OEM_DEV 0x0040 117 118 #define APM_STATE_DISABLE 0x0000 119 #define APM_STATE_ENABLE 0x0001 120 121 #define APM_STATE_DISENGAGE 0x0000 122 #define APM_STATE_ENGAGE 0x0001 123 124 /* 125 * Events (results of Get PM Event) 126 */ 127 #define APM_SYS_STANDBY 0x0001 128 #define APM_SYS_SUSPEND 0x0002 129 #define APM_NORMAL_RESUME 0x0003 130 #define APM_CRITICAL_RESUME 0x0004 131 #define APM_LOW_BATTERY 0x0005 132 #define APM_POWER_STATUS_CHANGE 0x0006 133 #define APM_UPDATE_TIME 0x0007 134 #define APM_CRITICAL_SUSPEND 0x0008 135 #define APM_USER_STANDBY 0x0009 136 #define APM_USER_SUSPEND 0x000a 137 #define APM_STANDBY_RESUME 0x000b 138 #define APM_CAPABILITY_CHANGE 0x000c 139 140 /* 141 * Error codes 142 */ 143 #define APM_SUCCESS 0x00 144 #define APM_DISABLED 0x01 145 #define APM_CONNECTED 0x02 146 #define APM_NOT_CONNECTED 0x03 147 #define APM_16_CONNECTED 0x05 148 #define APM_16_UNSUPPORTED 0x06 149 #define APM_32_CONNECTED 0x07 150 #define APM_32_UNSUPPORTED 0x08 151 #define APM_BAD_DEVICE 0x09 152 #define APM_BAD_PARAM 0x0a 153 #define APM_NOT_ENGAGED 0x0b 154 #define APM_BAD_FUNCTION 0x0c 155 #define APM_RESUME_DISABLED 0x0d 156 #define APM_NO_ERROR 0x53 157 #define APM_BAD_STATE 0x60 158 #define APM_NO_EVENTS 0x80 159 #define APM_NOT_PRESENT 0x86 160 161 /* 162 * APM Device IDs 163 */ 164 #define APM_DEVICE_BIOS 0x0000 165 #define APM_DEVICE_ALL 0x0001 166 #define APM_DEVICE_DISPLAY 0x0100 167 #define APM_DEVICE_STORAGE 0x0200 168 #define APM_DEVICE_PARALLEL 0x0300 169 #define APM_DEVICE_SERIAL 0x0400 170 #define APM_DEVICE_NETWORK 0x0500 171 #define APM_DEVICE_PCMCIA 0x0600 172 #define APM_DEVICE_BATTERY 0x8000 173 #define APM_DEVICE_OEM 0xe000 174 #define APM_DEVICE_OLD_ALL 0xffff 175 #define APM_DEVICE_CLASS 0x00ff 176 #define APM_DEVICE_MASK 0xff00 177 178 #ifdef __KERNEL__ 179 /* 180 * This is the "All Devices" ID communicated to the BIOS 181 */ 182 #define APM_DEVICE_BALL ((apm_info.connection_version > 0x0100) ? \ 183 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL) 184 #endif 185 186 /* 187 * Battery status 188 */ 189 #define APM_MAX_BATTERIES 2 190 191 /* 192 * APM defined capability bit flags 193 */ 194 #define APM_CAP_GLOBAL_STANDBY 0x0001 195 #define APM_CAP_GLOBAL_SUSPEND 0x0002 196 #define APM_CAP_RESUME_STANDBY_TIMER 0x0004 /* Timer resume from standby */ 197 #define APM_CAP_RESUME_SUSPEND_TIMER 0x0008 /* Timer resume from suspend */ 198 #define APM_CAP_RESUME_STANDBY_RING 0x0010 /* Resume on Ring fr standby */ 199 #define APM_CAP_RESUME_SUSPEND_RING 0x0020 /* Resume on Ring fr suspend */ 200 #define APM_CAP_RESUME_STANDBY_PCMCIA 0x0040 /* Resume on PCMCIA Ring */ 201 #define APM_CAP_RESUME_SUSPEND_PCMCIA 0x0080 /* Resume on PCMCIA Ring */ 202 203 /* 204 * ioctl operations 205 */ 206 #include <linux/ioctl.h> 207 208 #define APM_IOC_STANDBY _IO('A', 1) 209 #define APM_IOC_SUSPEND _IO('A', 2) 210 211 #endif /* LINUX_APM_H */ 212