/* 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 #include #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)){ printf("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); }