1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops
4 * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk)
5 * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com>
7 * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers
8 * on making sure the structure is aligned and packed.
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
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.
22 #ifndef _UAPI_LINUX_TOSHIBA_H
23 #define _UAPI_LINUX_TOSHIBA_H
26 * Toshiba modules paths
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"
35 * Toshiba SMM structure
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));
48 * IOCTLs (0x90 - 0x91)
51 #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters)
53 * Convenience toshiba_acpi command.
55 * The System Configuration Interface (SCI) is opened/closed internally
56 * to avoid userspace of buggy BIOSes.
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.
61 #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters)
64 #endif /* _UAPI_LINUX_TOSHIBA_H */