pci_openbsd.c

来自「mplayer播放器的源码」· C语言 代码 · 共 28 行

/*
   This file is based on:
   $XFree86: xc/programs/Xserver/hw/xfree86/etc/scanpci.c,v 3.34.2.17 1998/11/10 11:55:40 dawes Exp $
   Modified for readability by Nick Kurshev
*/

#ifdef __i386__

#include <errno.h>
#include <sys/types.h>
#include <machine/sysarch.h>

static __inline__ int enable_os_io(void)
{
    if (i386_iopl(1) < 0) {
	perror("i386_iopl");
	return(errno);
    }
    return(0);
}

static __inline__ int disable_os_io(void)
{
 /* Nothing to do */
    return(0);
}
#endif