serenum.c

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/*
 * COPYRIGHT:       See COPYING in the top level directory
 * PROJECT:         ReactOS Serial enumerator driver
 * FILE:            drivers/bus/serenum/serenum.c
 * PURPOSE:         Serial enumerator driver entry point
 *
 * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.org)
 */

#define INITGUID
#include "serenum.h"

static DRIVER_DISPATCH SerenumPnp;
static DRIVER_DISPATCH IrpStub;
static DRIVER_UNLOAD DriverUnload;
DRIVER_INITIALIZE DriverEntry;

static NTSTATUS NTAPI
SerenumPnp(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp)
{
    if (((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
        return SerenumFdoPnp(DeviceObject, Irp);
    else
        return SerenumPdoPnp(DeviceObject, Irp);
}

static VOID NTAPI
DriverUnload(IN PDRIVER_OBJECT DriverObject)
{
    // nothing to do here yet
}

static NTSTATUS NTAPI
IrpStub(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp)
{
    if (((PCOMMON_DEVICE_EXTENSION)DeviceObject->DeviceExtension)->IsFDO)
    {
        /* Forward IRPs to lower device */
        return ForwardIrpToLowerDeviceAndForget(DeviceObject, Irp);
    }
    else
    {
        /* Forward IRPs to attached FDO */
        return ForwardIrpToAttachedFdoAndForget(DeviceObject, Irp);
    }
}

/*
 * Standard DriverEntry method.
 */
NTSTATUS NTAPI
DriverEntry(
    IN PDRIVER_OBJECT DriverObject,
    IN PUNICODE_STRING RegPath)
{
    ULONG i;

    DriverObject->DriverUnload = DriverUnload;
    DriverObject->DriverExtension->AddDevice = SerenumAddDevice;

    for (i = 0; i <= IRP_MJ_MAXIMUM_FUNCTION; i++)
        DriverObject->MajorFunction[i] = IrpStub;

    //DriverObject->MajorFunction[IRP_MJ_QUERY_INFORMATION] = SerialQueryInformation;
    DriverObject->MajorFunction[IRP_MJ_PNP] = SerenumPnp;
    //DriverObject->MajorFunction[IRP_MJ_POWER] = SerialPower;

    return STATUS_SUCCESS;
}