1*e2be04c7SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2607ca46eSDavid Howells /* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops 3607ca46eSDavid Howells * 4607ca46eSDavid Howells * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) 5fc5462f8SAzael Avalos * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> 6607ca46eSDavid Howells * 7607ca46eSDavid Howells * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers 8607ca46eSDavid Howells * on making sure the structure is aligned and packed. 9607ca46eSDavid Howells * 10607ca46eSDavid Howells * This program is free software; you can redistribute it and/or modify it 11607ca46eSDavid Howells * under the terms of the GNU General Public License as published by the 12607ca46eSDavid Howells * Free Software Foundation; either version 2, or (at your option) any 13607ca46eSDavid Howells * later version. 14607ca46eSDavid Howells * 15607ca46eSDavid Howells * This program is distributed in the hope that it will be useful, but 16607ca46eSDavid Howells * WITHOUT ANY WARRANTY; without even the implied warranty of 17607ca46eSDavid Howells * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18607ca46eSDavid Howells * General Public License for more details. 19607ca46eSDavid Howells * 20607ca46eSDavid Howells */ 21607ca46eSDavid Howells 22607ca46eSDavid Howells #ifndef _UAPI_LINUX_TOSHIBA_H 23607ca46eSDavid Howells #define _UAPI_LINUX_TOSHIBA_H 24607ca46eSDavid Howells 25fc5462f8SAzael Avalos /* 26fc5462f8SAzael Avalos * Toshiba modules paths 27fc5462f8SAzael Avalos */ 28fc5462f8SAzael Avalos 29607ca46eSDavid Howells #define TOSH_PROC "/proc/toshiba" 30607ca46eSDavid Howells #define TOSH_DEVICE "/dev/toshiba" 31fc5462f8SAzael Avalos #define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba" 32fc5462f8SAzael Avalos #define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi" 33fc5462f8SAzael Avalos 34fc5462f8SAzael Avalos /* 35fc5462f8SAzael Avalos * Toshiba SMM structure 36fc5462f8SAzael Avalos */ 37607ca46eSDavid Howells 38607ca46eSDavid Howells typedef struct { 39607ca46eSDavid Howells unsigned int eax; 40607ca46eSDavid Howells unsigned int ebx __attribute__ ((packed)); 41607ca46eSDavid Howells unsigned int ecx __attribute__ ((packed)); 42607ca46eSDavid Howells unsigned int edx __attribute__ ((packed)); 43607ca46eSDavid Howells unsigned int esi __attribute__ ((packed)); 44607ca46eSDavid Howells unsigned int edi __attribute__ ((packed)); 45607ca46eSDavid Howells } SMMRegisters; 46607ca46eSDavid Howells 47fc5462f8SAzael Avalos /* 48fc5462f8SAzael Avalos * IOCTLs (0x90 - 0x91) 49fc5462f8SAzael Avalos */ 50fc5462f8SAzael Avalos 51fc5462f8SAzael Avalos #define TOSH_SMM _IOWR('t', 0x90, SMMRegisters) 52fc5462f8SAzael Avalos /* 53fc5462f8SAzael Avalos * Convenience toshiba_acpi command. 54fc5462f8SAzael Avalos * 55fc5462f8SAzael Avalos * The System Configuration Interface (SCI) is opened/closed internally 56fc5462f8SAzael Avalos * to avoid userspace of buggy BIOSes. 57fc5462f8SAzael Avalos * 58fc5462f8SAzael Avalos * The toshiba_acpi module checks whether the eax register is set with 59fc5462f8SAzael Avalos * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not. 60fc5462f8SAzael Avalos */ 61fc5462f8SAzael Avalos #define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters) 62fc5462f8SAzael Avalos 63607ca46eSDavid Howells 64607ca46eSDavid Howells #endif /* _UAPI_LINUX_TOSHIBA_H */ 65