libdha/sysdep/pci_sco.c

   1 /*
   2    This file is based on:
   3    $XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
   4    Modified for readability by Nick Kurshev
   5 */
   6 #include <sys/console.h>
   7 #include <sys/param.h>
   8 #include <sys/immu.h>
   9 #include <sys/region.h>
  10 #include <sys/proc.h>
  11 #include <sys/tss.h>
  12 #include <sys/sysi86.h>
  13 #include <sys/v86.h>
  14
  15 static __inline__ int enable_os_io(void)
  16 {
  17 #if defined(SI86IOPL)
  18     sysi86(SI86IOPL, 3);
  19 #else
  20     sysi86(SI86V86, V86SC_IOPL, PS_IOPL);
  21 #endif
  22     return(0);
  23 }
  24
  25 static __inline__ int disable_os_io(void)
  26 {
  27 #if defined(SI86IOPL)
  28     sysi86(SI86IOPL, 0);
  29 #else
  30     sysi86(SI86V86, V86SC_IOPL, 0);
  31 #endif
  32     return(0);
  33 }