include/uapi/linux/toshiba.h

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