arch/x86/kernel/bios_uv.c

   1 /*
   2  * BIOS run time interface routines.
   3  *
   4  *  Copyright (c) 2008 Silicon Graphics, Inc.  All Rights Reserved.
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19  */
  20
  21 #include <asm/uv/bios.h>
  22
  23 const char *
  24 x86_bios_strerror(long status)
  25 {
  26         const char *str;
  27         switch (status) {
  28         case  0: str = "Call completed without error";  break;
  29         case -1: str = "Not implemented";               break;
  30         case -2: str = "Invalid argument";              break;
  31         case -3: str = "Call completed with error";     break;
  32         default: str = "Unknown BIOS status code";      break;
  33         }
  34         return str;
  35 }
  36
  37 long
  38 x86_bios_freq_base(unsigned long which, unsigned long *ticks_per_second,
  39                    unsigned long *drift_info)
  40 {
  41         struct uv_bios_retval isrv;
  42
  43         BIOS_CALL(isrv, BIOS_FREQ_BASE, which, 0, 0, 0, 0, 0, 0);
  44         *ticks_per_second = isrv.v0;
  45         *drift_info = isrv.v1;
  46         return isrv.status;
  47 }
  48 EXPORT_SYMBOL_GPL(x86_bios_freq_base);