libdha/sysdep/pci_386bsd.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 <errno.h>
   7 #include <sys/file.h>
   8 #include <machine/console.h>
   9 #ifndef GCCUSESGAS
  10 #define GCCUSESGAS
  11 #endif
  12
  13 static int io_fd;
  14
  15 static __inline__ int enable_os_io(void)
  16 {
  17     io_fd = -1 ;
  18     if ((io_fd = open("/dev/console", O_RDWR, 0)) < 0) {
  19         perror("/dev/console");
  20         return(errno);
  21     }
  22     if (ioctl(io_fd, KDENABIO, 0) < 0) {
  23         perror("ioctl(KDENABIO)");
  24         return(errno);
  25     }
  26     return(0);
  27 }
  28
  29 static __inline__ int disable_os_io(void)
  30 {
  31     if (ioctl(io_fd, KDDISABIO, 0) < 0) {
  32         perror("ioctl(KDDISABIO)");
  33         close(io_fd);
  34         return(errno);
  35     }
  36     close(io_fd);
  37     return(0);
  38 }