blob: c58bf4b5bb266438c217c46a76b7eb21150bfdc4 [file] [log] [blame]
David Howells607ca462012-10-13 10:46:48 +01001/* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops
2 *
3 * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk)
Azael Avalosfc5462f2015-07-22 18:09:11 -06004 * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com>
David Howells607ca462012-10-13 10:46:48 +01005 *
6 * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers
7 * on making sure the structure is aligned and packed.
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2, or (at your option) any
12 * later version.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 */
20
21#ifndef _UAPI_LINUX_TOSHIBA_H
22#define _UAPI_LINUX_TOSHIBA_H
23
Azael Avalosfc5462f2015-07-22 18:09:11 -060024/*
25 * Toshiba modules paths
26 */
27
28#define TOSH_PROC "/proc/toshiba"
29#define TOSH_DEVICE "/dev/toshiba"
30#define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba"
31#define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi"
32
33/*
34 * Toshiba SMM structure
35 */
David Howells607ca462012-10-13 10:46:48 +010036
37typedef struct {
38 unsigned int eax;
39 unsigned int ebx __attribute__ ((packed));
40 unsigned int ecx __attribute__ ((packed));
41 unsigned int edx __attribute__ ((packed));
42 unsigned int esi __attribute__ ((packed));
43 unsigned int edi __attribute__ ((packed));
44} SMMRegisters;
45
Azael Avalosfc5462f2015-07-22 18:09:11 -060046/*
47 * IOCTLs (0x90 - 0x91)
48 */
49
50#define TOSH_SMM _IOWR('t', 0x90, SMMRegisters)
51/*
52 * Convenience toshiba_acpi command.
53 *
54 * The System Configuration Interface (SCI) is opened/closed internally
55 * to avoid userspace of buggy BIOSes.
56 *
57 * The toshiba_acpi module checks whether the eax register is set with
58 * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not.
59 */
60#define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters)
61
David Howells607ca462012-10-13 10:46:48 +010062
63#endif /* _UAPI_LINUX_TOSHIBA_H */