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e2be04c7 | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
607ca46e DH |
2 | /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops |
3 | * | |
4 | * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) | |
fc5462f8 | 5 | * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> |
607ca46e DH |
6 | * |
7 | * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers | |
8 | * on making sure the structure is aligned and packed. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2, or (at your option) any | |
13 | * later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | */ | |
21 | ||
22 | #ifndef _UAPI_LINUX_TOSHIBA_H | |
23 | #define _UAPI_LINUX_TOSHIBA_H | |
24 | ||
fc5462f8 AA |
25 | /* |
26 | * Toshiba modules paths | |
27 | */ | |
28 | ||
29 | #define TOSH_PROC "/proc/toshiba" | |
30 | #define TOSH_DEVICE "/dev/toshiba" | |
31 | #define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba" | |
32 | #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi" | |
33 | ||
34 | /* | |
35 | * Toshiba SMM structure | |
36 | */ | |
607ca46e DH |
37 | |
38 | typedef struct { | |
39 | unsigned int eax; | |
40 | unsigned int ebx __attribute__ ((packed)); | |
41 | unsigned int ecx __attribute__ ((packed)); | |
42 | unsigned int edx __attribute__ ((packed)); | |
43 | unsigned int esi __attribute__ ((packed)); | |
44 | unsigned int edi __attribute__ ((packed)); | |
45 | } SMMRegisters; | |
46 | ||
fc5462f8 AA |
47 | /* |
48 | * IOCTLs (0x90 - 0x91) | |
49 | */ | |
50 | ||
51 | #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters) | |
52 | /* | |
53 | * Convenience toshiba_acpi command. | |
54 | * | |
55 | * The System Configuration Interface (SCI) is opened/closed internally | |
56 | * to avoid userspace of buggy BIOSes. | |
57 | * | |
58 | * The toshiba_acpi module checks whether the eax register is set with | |
59 | * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not. | |
60 | */ | |
61 | #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters) | |
62 | ||
607ca46e DH |
63 | |
64 | #endif /* _UAPI_LINUX_TOSHIBA_H */ |