1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2*4882a593Smuzhiyun /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops 3*4882a593Smuzhiyun * 4*4882a593Smuzhiyun * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) 5*4882a593Smuzhiyun * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers 8*4882a593Smuzhiyun * on making sure the structure is aligned and packed. 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * This program is free software; you can redistribute it and/or modify it 11*4882a593Smuzhiyun * under the terms of the GNU General Public License as published by the 12*4882a593Smuzhiyun * Free Software Foundation; either version 2, or (at your option) any 13*4882a593Smuzhiyun * later version. 14*4882a593Smuzhiyun * 15*4882a593Smuzhiyun * This program is distributed in the hope that it will be useful, but 16*4882a593Smuzhiyun * WITHOUT ANY WARRANTY; without even the implied warranty of 17*4882a593Smuzhiyun * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18*4882a593Smuzhiyun * General Public License for more details. 19*4882a593Smuzhiyun * 20*4882a593Smuzhiyun */ 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #ifndef _UAPI_LINUX_TOSHIBA_H 23*4882a593Smuzhiyun #define _UAPI_LINUX_TOSHIBA_H 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* 26*4882a593Smuzhiyun * Toshiba modules paths 27*4882a593Smuzhiyun */ 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #define TOSH_PROC "/proc/toshiba" 30*4882a593Smuzhiyun #define TOSH_DEVICE "/dev/toshiba" 31*4882a593Smuzhiyun #define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba" 32*4882a593Smuzhiyun #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi" 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun /* 35*4882a593Smuzhiyun * Toshiba SMM structure 36*4882a593Smuzhiyun */ 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun typedef struct { 39*4882a593Smuzhiyun unsigned int eax; 40*4882a593Smuzhiyun unsigned int ebx __attribute__ ((packed)); 41*4882a593Smuzhiyun unsigned int ecx __attribute__ ((packed)); 42*4882a593Smuzhiyun unsigned int edx __attribute__ ((packed)); 43*4882a593Smuzhiyun unsigned int esi __attribute__ ((packed)); 44*4882a593Smuzhiyun unsigned int edi __attribute__ ((packed)); 45*4882a593Smuzhiyun } SMMRegisters; 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun /* 48*4882a593Smuzhiyun * IOCTLs (0x90 - 0x91) 49*4882a593Smuzhiyun */ 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters) 52*4882a593Smuzhiyun /* 53*4882a593Smuzhiyun * Convenience toshiba_acpi command. 54*4882a593Smuzhiyun * 55*4882a593Smuzhiyun * The System Configuration Interface (SCI) is opened/closed internally 56*4882a593Smuzhiyun * to avoid userspace of buggy BIOSes. 57*4882a593Smuzhiyun * 58*4882a593Smuzhiyun * The toshiba_acpi module checks whether the eax register is set with 59*4882a593Smuzhiyun * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not. 60*4882a593Smuzhiyun */ 61*4882a593Smuzhiyun #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters) 62*4882a593Smuzhiyun 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #endif /* _UAPI_LINUX_TOSHIBA_H */ 65