1/* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops 2 * 3 * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) 4 * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> 5 * 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 24/* 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 */ 36 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 46/* 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 62 63#endif /* _UAPI_LINUX_TOSHIBA_H */ 64