1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Include file for the interface to an APM BIOS 4*4882a593Smuzhiyun * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au) 5*4882a593Smuzhiyun */ 6*4882a593Smuzhiyun #ifndef _LINUX_APM_H 7*4882a593Smuzhiyun #define _LINUX_APM_H 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #include <uapi/linux/apm_bios.h> 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8) 13*4882a593Smuzhiyun #define APM_CS_16 (APM_CS + 8) 14*4882a593Smuzhiyun #define APM_DS (APM_CS_16 + 8) 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* Results of APM Installation Check */ 17*4882a593Smuzhiyun #define APM_16_BIT_SUPPORT 0x0001 18*4882a593Smuzhiyun #define APM_32_BIT_SUPPORT 0x0002 19*4882a593Smuzhiyun #define APM_IDLE_SLOWS_CLOCK 0x0004 20*4882a593Smuzhiyun #define APM_BIOS_DISABLED 0x0008 21*4882a593Smuzhiyun #define APM_BIOS_DISENGAGED 0x0010 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun /* 24*4882a593Smuzhiyun * Data for APM that is persistent across module unload/load 25*4882a593Smuzhiyun */ 26*4882a593Smuzhiyun struct apm_info { 27*4882a593Smuzhiyun struct apm_bios_info bios; 28*4882a593Smuzhiyun unsigned short connection_version; 29*4882a593Smuzhiyun int get_power_status_broken; 30*4882a593Smuzhiyun int get_power_status_swabinminutes; 31*4882a593Smuzhiyun int allow_ints; 32*4882a593Smuzhiyun int forbid_idle; 33*4882a593Smuzhiyun int realmode_power_off; 34*4882a593Smuzhiyun int disabled; 35*4882a593Smuzhiyun }; 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* 38*4882a593Smuzhiyun * The APM function codes 39*4882a593Smuzhiyun */ 40*4882a593Smuzhiyun #define APM_FUNC_INST_CHECK 0x5300 41*4882a593Smuzhiyun #define APM_FUNC_REAL_CONN 0x5301 42*4882a593Smuzhiyun #define APM_FUNC_16BIT_CONN 0x5302 43*4882a593Smuzhiyun #define APM_FUNC_32BIT_CONN 0x5303 44*4882a593Smuzhiyun #define APM_FUNC_DISCONN 0x5304 45*4882a593Smuzhiyun #define APM_FUNC_IDLE 0x5305 46*4882a593Smuzhiyun #define APM_FUNC_BUSY 0x5306 47*4882a593Smuzhiyun #define APM_FUNC_SET_STATE 0x5307 48*4882a593Smuzhiyun #define APM_FUNC_ENABLE_PM 0x5308 49*4882a593Smuzhiyun #define APM_FUNC_RESTORE_BIOS 0x5309 50*4882a593Smuzhiyun #define APM_FUNC_GET_STATUS 0x530a 51*4882a593Smuzhiyun #define APM_FUNC_GET_EVENT 0x530b 52*4882a593Smuzhiyun #define APM_FUNC_GET_STATE 0x530c 53*4882a593Smuzhiyun #define APM_FUNC_ENABLE_DEV_PM 0x530d 54*4882a593Smuzhiyun #define APM_FUNC_VERSION 0x530e 55*4882a593Smuzhiyun #define APM_FUNC_ENGAGE_PM 0x530f 56*4882a593Smuzhiyun #define APM_FUNC_GET_CAP 0x5310 57*4882a593Smuzhiyun #define APM_FUNC_RESUME_TIMER 0x5311 58*4882a593Smuzhiyun #define APM_FUNC_RESUME_ON_RING 0x5312 59*4882a593Smuzhiyun #define APM_FUNC_TIMER 0x5313 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun /* 62*4882a593Smuzhiyun * Function code for APM_FUNC_RESUME_TIMER 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun #define APM_FUNC_DISABLE_TIMER 0 65*4882a593Smuzhiyun #define APM_FUNC_GET_TIMER 1 66*4882a593Smuzhiyun #define APM_FUNC_SET_TIMER 2 67*4882a593Smuzhiyun 68*4882a593Smuzhiyun /* 69*4882a593Smuzhiyun * Function code for APM_FUNC_RESUME_ON_RING 70*4882a593Smuzhiyun */ 71*4882a593Smuzhiyun #define APM_FUNC_DISABLE_RING 0 72*4882a593Smuzhiyun #define APM_FUNC_ENABLE_RING 1 73*4882a593Smuzhiyun #define APM_FUNC_GET_RING 2 74*4882a593Smuzhiyun 75*4882a593Smuzhiyun /* 76*4882a593Smuzhiyun * Function code for APM_FUNC_TIMER_STATUS 77*4882a593Smuzhiyun */ 78*4882a593Smuzhiyun #define APM_FUNC_TIMER_DISABLE 0 79*4882a593Smuzhiyun #define APM_FUNC_TIMER_ENABLE 1 80*4882a593Smuzhiyun #define APM_FUNC_TIMER_GET 2 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun /* 83*4882a593Smuzhiyun * in arch/i386/kernel/setup.c 84*4882a593Smuzhiyun */ 85*4882a593Smuzhiyun extern struct apm_info apm_info; 86*4882a593Smuzhiyun 87*4882a593Smuzhiyun /* 88*4882a593Smuzhiyun * This is the "All Devices" ID communicated to the BIOS 89*4882a593Smuzhiyun */ 90*4882a593Smuzhiyun #define APM_DEVICE_BALL ((apm_info.connection_version > 0x0100) ? \ 91*4882a593Smuzhiyun APM_DEVICE_ALL : APM_DEVICE_OLD_ALL) 92*4882a593Smuzhiyun #endif /* LINUX_APM_H */ 93