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