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