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/*
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 <windows.h>
#include <ddk/ntddk.h>
#include "../dhahelperwin/dhahelper.h"
static HANDLE hDriver;
extern int IsWinNT();
static __inline__ int enable_os_io(void)
{
if(IsWinNT()){
DWORD dwBytesReturned;
hDriver = CreateFile("\\\\.\\DHAHELPER",GENERIC_READ | GENERIC_WRITE,0,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,NULL);
if(!DeviceIoControl(hDriver, IOCTL_DHAHELPER_ENABLEDIRECTIO, NULL,0, NULL, 0, &dwBytesReturned, NULL)){
fprintf(stderr,"Unable to enable directio please install dhahelper.sys.\n");
return(1);
}
}
return(0);
}
static __inline__ int disable_os_io(void)
{
if(IsWinNT()){
DWORD dwBytesReturned;
DeviceIoControl(hDriver, IOCTL_DHAHELPER_DISABLEDIRECTIO, NULL,0, NULL, 0, &dwBytesReturned, NULL);
CloseHandle(hDriver);
}
return(0);
}
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