Initial version of GPS/GNSS UMDF Sample Driver (UMDF Version 2)

1 files changed, 111 insertions, 0 deletions

diff --git a/gnss/gnssUmdf/Driver.cpp b/gnss/gnssUmdf/Driver.cpp
new file mode 100644
index 00000000..6e4a2289
--- /dev/null
+++ b/gnss/gnssUmdf/Driver.cpp
@@ -0,0 +1,111 @@
+/*++
+
+Copyright (c) Microsoft Corporation.  All rights reserved.
+
+Module Name:
+
+    driver.cpp
+
+Abstract:
+
+    This file contains the driver entry points and callbacks.
+
+Environment:
+
+    Windows User-Mode Driver Framework
+
+--*/
+
+#include "precomp.h"
+#include "Trace.h"
+#include "Defaults.h"
+#include "Driver.h"
+#include "Device.h"
+#include "NmeaProcessor.h"
+#include "FixSession.h"
+#include "FixHandler.h"
+#include "Queue.h"
+
+#include "Driver.tmh"
+
+
+extern "C"
+NTSTATUS
+DriverEntry(
+    _In_ PDRIVER_OBJECT DriverObject,
+    _In_ PUNICODE_STRING RegistryPath
+)
+{
+    NTSTATUS status = STATUS_SUCCESS;
+
+    // Initialize WPP Tracing
+    WPP_INIT_TRACING(DriverObject, RegistryPath);
+
+    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Entry");
+
+    // Register a cleanup callback so that we can call WPP_CLEANUP when
+    // the framework driver object is deleted during driver unload.
+    WDF_OBJECT_ATTRIBUTES attributes;
+    WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
+    attributes.EvtCleanupCallback = GnssUmdfEvtDriverContextCleanup;
+
+    WDF_DRIVER_CONFIG config;
+    WDF_DRIVER_CONFIG_INIT(&config,
+                           CDevice::OnDeviceAdd);
+
+    config.EvtDriverUnload = OnDriverUnload;
+
+    status = WdfDriverCreate(DriverObject,
+                             RegistryPath,
+                             &attributes,
+                             &config,
+                             WDF_NO_HANDLE);
+
+    if (!NT_SUCCESS(status))
+    {
+        TraceEvents(TRACE_LEVEL_ERROR, TRACE_DRIVER, "WdfDriverCreate failed %!STATUS!", status);
+
+        WPP_CLEANUP(DriverObject);
+
+        return status;
+    }
+
+    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Exit");
+
+    return status;
+}
+
+void
+GnssUmdfEvtDriverContextCleanup(
+    _In_ WDFOBJECT DriverObject
+)
+/*++
+Routine Description:
+
+    Free all the resources allocated in DriverEntry.
+
+Arguments:
+
+    DriverObject - handle to a WDF Driver object.
+
+Return Value:
+
+    void.
+
+--*/
+{
+    UNREFERENCED_PARAMETER(DriverObject);
+
+    TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DRIVER, "%!FUNC! Entry");
+
+    // Stop WPP Tracing
+    WPP_CLEANUP(WdfDriverWdmGetDriverObject((WDFDRIVER)DriverObject));
+}
+
+void
+OnDriverUnload(
+    _In_ WDFDRIVER /* Driver */
+)
+{
+    WPP_CLEANUP(Driver);
+}