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Diffstat (limited to 'include/uapi/linux/toshiba.h')
| -rw-r--r-- | include/uapi/linux/toshiba.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/include/uapi/linux/toshiba.h b/include/uapi/linux/toshiba.h new file mode 100644 index 000000000..7f1941935 --- /dev/null +++ b/include/uapi/linux/toshiba.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* toshiba.h -- Linux driver for accessing the SMM on Toshiba laptops + * + * Copyright (c) 1996-2000 Jonathan A. Buzzard (jonathan@buzzard.org.uk) + * Copyright (c) 2015 Azael Avalos <coproscefalo@gmail.com> + * + * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers + * on making sure the structure is aligned and packed. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + */ + +#ifndef _UAPI_LINUX_TOSHIBA_H +#define _UAPI_LINUX_TOSHIBA_H + +/* + * Toshiba modules paths + */ + +#define TOSH_PROC "/proc/toshiba" +#define TOSH_DEVICE "/dev/toshiba" +#define TOSHIBA_ACPI_PROC "/proc/acpi/toshiba" +#define TOSHIBA_ACPI_DEVICE "/dev/toshiba_acpi" + +/* + * Toshiba SMM structure + */ + +typedef struct { + unsigned int eax; + unsigned int ebx __attribute__ ((packed)); + unsigned int ecx __attribute__ ((packed)); + unsigned int edx __attribute__ ((packed)); + unsigned int esi __attribute__ ((packed)); + unsigned int edi __attribute__ ((packed)); +} SMMRegisters; + +/* + * IOCTLs (0x90 - 0x91) + */ + +#define TOSH_SMM _IOWR('t', 0x90, SMMRegisters) +/* + * Convenience toshiba_acpi command. + * + * The System Configuration Interface (SCI) is opened/closed internally + * to avoid userspace of buggy BIOSes. + * + * The toshiba_acpi module checks whether the eax register is set with + * SCI_GET (0xf300) or SCI_SET (0xf400), returning -EINVAL if not. + */ +#define TOSHIBA_ACPI_SCI _IOWR('t', 0x91, SMMRegisters) + + +#endif /* _UAPI_LINUX_TOSHIBA_H */ |