/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops * * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> * * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers * on making sure the structure is aligned and packed. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2, or (at your option) any * later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * */ #ifndef _LINUX_TOSHIBA_H #define _LINUX_TOSHIBA_H /* * Toshiba modules paths */ #define TOSH_PROC "/proc/toshiba" #define TOSH_DEVICE "/dev/toshiba" #define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba" #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi" /* * Toshiba SMM structure */ typedef struct { unsigned int eax; unsigned int ebx __attribute__ ((packed)); unsigned int ecx __attribute__ ((packed)); unsigned int edx __attribute__ ((packed)); unsigned int esi __attribute__ ((packed)); unsigned int edi __attribute__ ((packed)); } SMMRegisters; /* * IOCTLs (0x90 - 0x91) */ #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters) /* * Convenience toshiba_acpi command. * * The System Configuration Interface (SCI) is opened/closed internally * to avoid userspace of buggy BIOSes. * * The toshiba_acpi module checks whether the eax register is set with * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not. */ #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters) #endif /* _LINUX_TOSHIBA_H */