lib/i386-io-linux.h

   1 /*
   2  *      The PCI Library -- Access to i386 I/O ports on Linux
   3  *
   4  *      Copyright (c) 1997--2006 Martin Mares <mj@ucw.cz>
   5  *
   6  *      Can be freely distributed and used under the terms of the GNU GPL.
   7  */
   8
   9 #include <sys/io.h>
  10
  11 static int
  12 intel_setup_io(struct pci_access *a UNUSED)
  13 {
  14   return (iopl(3) < 0) ? 0 : 1;
  15 }
  16
  17 static inline int
  18 intel_cleanup_io(struct pci_access *a UNUSED)
  19 {
  20   iopl(3);
  21   return -1;
  22 }
  23
  24 static inline void intel_io_lock(void)
  25 {
  26 }
  27
  28 static inline void intel_io_unlock(void)
  29 {
  30 }