include/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  *
   5  * Thanks to Juergen Heinzl <juergen@monocerus.demon.co.uk> for the pointers
   6  * on making sure the structure is aligned and packed.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  */
  19
  20 #ifndef _LINUX_TOSHIBA_H
  21 #define _LINUX_TOSHIBA_H
  22
  23 #define TOSH_PROC "/proc/toshiba"
  24 #define TOSH_DEVICE "/dev/toshiba"
  25 #define TOSH_SMM _IOWR('t', 0x90, int)  /* broken: meant 24 bytes */
  26
  27 typedef struct {
  28         unsigned int eax;
  29         unsigned int ebx __attribute__ ((packed));
  30         unsigned int ecx __attribute__ ((packed));
  31         unsigned int edx __attribute__ ((packed));
  32         unsigned int esi __attribute__ ((packed));
  33         unsigned int edi __attribute__ ((packed));
  34 } SMMRegisters;
  35
  36 int tosh_smm(SMMRegisters *regs);
  37
  38 #endif