mirror of https://github.com/mpv-player/mpv
59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/*
|
|
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
|
|
*/
|
|
#include <errno.h>
|
|
#ifdef __i386__
|
|
#include <sys/perm.h>
|
|
#else
|
|
#ifndef __sparc__
|
|
#include <sys/io.h>
|
|
#endif
|
|
#endif
|
|
|
|
#include "config.h"
|
|
|
|
#ifdef CONFIG_DHAHELPER
|
|
#include <fcntl.h>
|
|
int dhahelper_initialized = 0;
|
|
int dhahelper_fd = 0;
|
|
#endif
|
|
|
|
static __inline__ int enable_os_io(void)
|
|
{
|
|
#ifdef CONFIG_DHAHELPER
|
|
dhahelper_fd = open("/dev/dhahelper", O_RDWR);
|
|
if (dhahelper_fd > 0)
|
|
{
|
|
dhahelper_initialized = 1;
|
|
return(0);
|
|
}
|
|
dhahelper_initialized = -1;
|
|
#endif
|
|
|
|
#if defined(__powerpc__) && defined(__linux__)
|
|
/* should be fixed? */
|
|
#else
|
|
if (iopl(3) != 0)
|
|
return(errno);
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
static __inline__ int disable_os_io(void)
|
|
{
|
|
#ifdef CONFIG_DHAHELPER
|
|
if (dhahelper_initialized == 1)
|
|
close(dhahelper_fd);
|
|
else
|
|
#endif
|
|
#if defined(__powerpc__) && defined(__linux__)
|
|
/* should be fixed? */
|
|
#else
|
|
if (iopl(0) != 0)
|
|
return(errno);
|
|
#endif
|
|
return(0);
|
|
}
|