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 | |