/*++

Copyright (c) Microsoft Corporation

Module Name:

    kmdf_vdev.cpp

Abstract:

    Entry file for the kmdf component of the 1394 virtual device hybrid driver sample.

--*/



#include "kmdf_vdev.h"
#include "kmdf_vdev.tmh"     // autogenerated for WPP tracing

#ifdef ALLOC_PRAGMA
#pragma alloc_text(INIT, DriverEntry)
#endif

NTSTATUS
DriverEntry (
             IN PDRIVER_OBJECT   DriverObject,
             IN PUNICODE_STRING  RegistryPath)
/*++

Routine Description:

    Installable driver initialization entry point.
    This entry point is called directly by the I/O system.

Arguments:

    DriverObject - pointer to the driver object

    RegistryPath - pointer to a unicode string representing the path,
                   to driver-specific key in the registry.

Return Value:

    STATUS_SUCCESS if successful,
    STATUS_UNSUCCESSFUL otherwise.

--*/
{
    NTSTATUS                ntStatus = STATUS_SUCCESS;
    WDF_DRIVER_CONFIG       config;
    WDF_OBJECT_ATTRIBUTES   attributes;

    WPP_INIT_TRACING(DriverObject, RegistryPath);

    Enter();
    DoTraceLevelMessage(TRACE_LEVEL_INFORMATION, 
                        TRACE_FLAG_DRIVER, 
                        "1394VDev Hybrid Sample\n");

    //
    // Register a cleanup callback function (which calls WPP_CLEANUP)
    // for the framework driver object. The framework will call
    // the cleanup callback function when it deletes the driver object,
    // before the driver is unloaded.
    //
    WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
    attributes.EvtCleanupCallback = kmdf1394_EvtDriverCleanup;

    //
    // Initialize the Driver Config structure..
    //
    WDF_DRIVER_CONFIG_INIT (&config, kmdf1394_EvtDeviceAdd);

    //
    // Create a WDFDRIVER object.
    //
    ntStatus = WdfDriverCreate (
        DriverObject,
        RegistryPath,
        &attributes,
        &config,
        WDF_NO_HANDLE);
    if (!NT_SUCCESS (ntStatus)) 
    {
        DoTraceLevelMessage(TRACE_LEVEL_ERROR, 
                            TRACE_FLAG_DRIVER, 
                            "WdfDriverCreate failed with status %!STATUS!\n", 
                            ntStatus);
        ExitS(ntStatus);
        WPP_CLEANUP(DriverObject);
    }
    else
    {
        ExitS(ntStatus);
    }

    return ntStatus;
} // DriverEntry


void
kmdf1394_EvtDriverCleanup(
    IN WDFOBJECT  WdfDriver
    )
/*++
Routine Description:

    Free all the resources allocated in DriverEntry.

Arguments:

    Driver - handle to a WDF Driver object.

Return Value:

    VOID.

--*/
{
    DoTraceLevelMessage(TRACE_LEVEL_INFORMATION, 
                        TRACE_FLAG_DRIVER, 
                        "kmdf1394_EvtDriverCleanup: WdfDriver 0x%p", 
                        WdfDriver);

    //
    // Stop WPP Tracing
    //
    WPP_CLEANUP(WdfDriverWdmGetDriverObject((WDFDRIVER)WdfDriver));

    return;
}