1 files changed, 64 insertions, 0 deletions
diff --git a/xddm/miniport/wdmhelper.c b/xddm/miniport/wdmhelper.c
new file mode 100644
index 0000000..5af1909
--- /dev/null
+++ b/xddm/miniport/wdmhelper.c
@@ -0,0 +1,64 @@
+/*
+   Copyright (C) 2009 Red Hat, Inc.
+
+   This software is licensed under the GNU General Public License,
+   version 2 (GPLv2) (see COPYING for details), subject to the
+   following clarification.
+
+   With respect to binaries built using the Microsoft(R) Windows
+   Driver Kit (WDK), GPLv2 does not extend to any code contained in or
+   derived from the WDK ("WDK Code").  As to WDK Code, by using or
+   distributing such binaries you agree to be bound by the Microsoft
+   Software License Terms for the WDK.  All WDK Code is considered by
+   the GPLv2 licensors to qualify for the special exception stated in
+   section 3 of GPLv2 (commonly known as the system library
+   exception).
+
+   There is NO WARRANTY for this software, express or implied,
+   including the implied warranties of NON-INFRINGEMENT, TITLE,
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+*/
+
+#if (WINVER < 0x0501)
+#include <ntddk.h>
+#include "wdmhelper.h"
+
+void QXLDeleteEvent(PVOID pEvent)
+{
+    if(pEvent) {
+        ExFreePool(pEvent);
+    }
+}
+
+LONG QXLInitializeEvent(PVOID * pEvent)
+{
+    if(pEvent) {
+        *pEvent = ExAllocatePoolWithTag(NonPagedPool, sizeof(KEVENT), '_lxq');
+
+        if(*pEvent) {
+            KeInitializeEvent((PRKEVENT)*pEvent, SynchronizationEvent, FALSE);
+        }
+    }
+
+    return 0;
+}
+
+void QXLSetEvent(PVOID pEvent)
+{
+    //Pririty boost can be switched to IO_NO_INCREMENT
+    if(pEvent) {
+        KeSetEvent((PRKEVENT)pEvent, IO_VIDEO_INCREMENT, FALSE);
+    }
+}
+
+ULONG QXLWaitForEvent(PVOID pEvent, PLARGE_INTEGER Timeout)
+{
+    if(pEvent) {
+        return NT_SUCCESS(KeWaitForSingleObject(pEvent, Executive, KernelMode, TRUE, Timeout));
+    }
+
+    return FALSE;
+}
+
+#endif
+