1 files changed, 38 insertions, 0 deletions
diff --git a/vidix/sysdep/pci_win32.c b/vidix/sysdep/pci_win32.c
new file mode 100644
index 0000000000..5dc1841d24
--- /dev/null
+++ b/vidix/sysdep/pci_win32.c
@@ -0,0 +1,38 @@
+/*
+   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);
+}