mirror of
https://github.com/mpv-player/mpv
synced 2024-12-25 16:33:02 +00:00
49cf0be8e0
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@4511 b3059339-0415-0410-9bf9-f77b7e298cf2
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/*
|
|
mtrr.c - Stuff for optimizing memory access
|
|
Copyrights:
|
|
2002 - Linux version by Nick Kurshev
|
|
Licence: GPL
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include "libdha.h"
|
|
#include "AsmMacros.h"
|
|
|
|
|
|
#if defined( __i386__ )
|
|
int mtrr_set_type(unsigned base,unsigned size,int type)
|
|
{
|
|
#ifdef linux
|
|
FILE * mtrr_fd;
|
|
char * stype;
|
|
switch(type)
|
|
{
|
|
case MTRR_TYPE_UNCACHABLE: stype = "uncachable"; break;
|
|
case MTRR_TYPE_WRCOMB: stype = "write-combining"; break;
|
|
case MTRR_TYPE_WRTHROUGH: stype = "write-through"; break;
|
|
case MTRR_TYPE_WRPROT: stype = "write-protect"; break;
|
|
case MTRR_TYPE_WRBACK: stype = "write-back"; break;
|
|
default: return EINVAL;
|
|
}
|
|
mtrr_fd = fopen("/proc/mtrr","wt");
|
|
if(mtrr_fd)
|
|
{
|
|
char sout[256];
|
|
unsigned wr_len;
|
|
sprintf(sout,"base=0x%08X size=0x%08X type=%s\n",base,size,stype);
|
|
wr_len = fprintf(mtrr_fd,sout);
|
|
/*printf("MTRR: %s\n",sout);*/
|
|
fclose(mtrr_fd);
|
|
return wr_len == strlen(sout) ? 0 : EPERM;
|
|
}
|
|
return ENOSYS;
|
|
#else
|
|
#warning Please port MTRR stuff!!!
|
|
return ENOSYS;
|
|
#endif
|
|
}
|
|
#else
|
|
int mtrr_set_type(unsigned base,unsigned size,int type)
|
|
{
|
|
return ENOSYS;
|
|
}
|
|
#endif |