1/* 2 * Include file for the interface to an APM BIOS 3 * Copyright 1994-2001 Stephen Rothwell (sfr@canb.auug.org.au) 4 * 5 * This program is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License as published by the 7 * Free Software Foundation; either version 2, or (at your option) any 8 * later version. 9 * 10 * This program is distributed in the hope that it will be useful, but 11 * WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * General Public License for more details. 14 */ 15#ifndef _LINUX_APM_H 16#define _LINUX_APM_H 17 18#include <uapi/linux/apm_bios.h> 19 20 21#define APM_CS (GDT_ENTRY_APMBIOS_BASE * 8) 22#define APM_CS_16 (APM_CS + 8) 23#define APM_DS (APM_CS_16 + 8) 24 25/* Results of APM Installation Check */ 26#define APM_16_BIT_SUPPORT 0x0001 27#define APM_32_BIT_SUPPORT 0x0002 28#define APM_IDLE_SLOWS_CLOCK 0x0004 29#define APM_BIOS_DISABLED 0x0008 30#define APM_BIOS_DISENGAGED 0x0010 31 32/* 33 * Data for APM that is persistent across module unload/load 34 */ 35struct apm_info { 36 struct apm_bios_info bios; 37 unsigned short connection_version; 38 int get_power_status_broken; 39 int get_power_status_swabinminutes; 40 int allow_ints; 41 int forbid_idle; 42 int realmode_power_off; 43 int disabled; 44}; 45 46/* 47 * The APM function codes 48 */ 49#define APM_FUNC_INST_CHECK 0x5300 50#define APM_FUNC_REAL_CONN 0x5301 51#define APM_FUNC_16BIT_CONN 0x5302 52#define APM_FUNC_32BIT_CONN 0x5303 53#define APM_FUNC_DISCONN 0x5304 54#define APM_FUNC_IDLE 0x5305 55#define APM_FUNC_BUSY 0x5306 56#define APM_FUNC_SET_STATE 0x5307 57#define APM_FUNC_ENABLE_PM 0x5308 58#define APM_FUNC_RESTORE_BIOS 0x5309 59#define APM_FUNC_GET_STATUS 0x530a 60#define APM_FUNC_GET_EVENT 0x530b 61#define APM_FUNC_GET_STATE 0x530c 62#define APM_FUNC_ENABLE_DEV_PM 0x530d 63#define APM_FUNC_VERSION 0x530e 64#define APM_FUNC_ENGAGE_PM 0x530f 65#define APM_FUNC_GET_CAP 0x5310 66#define APM_FUNC_RESUME_TIMER 0x5311 67#define APM_FUNC_RESUME_ON_RING 0x5312 68#define APM_FUNC_TIMER 0x5313 69 70/* 71 * Function code for APM_FUNC_RESUME_TIMER 72 */ 73#define APM_FUNC_DISABLE_TIMER 0 74#define APM_FUNC_GET_TIMER 1 75#define APM_FUNC_SET_TIMER 2 76 77/* 78 * Function code for APM_FUNC_RESUME_ON_RING 79 */ 80#define APM_FUNC_DISABLE_RING 0 81#define APM_FUNC_ENABLE_RING 1 82#define APM_FUNC_GET_RING 2 83 84/* 85 * Function code for APM_FUNC_TIMER_STATUS 86 */ 87#define APM_FUNC_TIMER_DISABLE 0 88#define APM_FUNC_TIMER_ENABLE 1 89#define APM_FUNC_TIMER_GET 2 90 91/* 92 * in arch/i386/kernel/setup.c 93 */ 94extern struct apm_info apm_info; 95 96/* 97 * This is the "All Devices" ID communicated to the BIOS 98 */ 99#define APM_DEVICE_BALL ((apm_info.connection_version > 0x0100) ? \ 100 APM_DEVICE_ALL : APM_DEVICE_OLD_ALL) 101#endif /* LINUX_APM_H */ 102