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