/*
 * PROJECT:     ReactOS Universal Serial Bus Human Interface Device Driver
 * LICENSE:     GPL - See COPYING in the top level directory
 * FILE:        drivers/hid/hidclass/hidclass.c
 * PURPOSE:     HID Class Driver
 * PROGRAMMERS:
 *              Michael Martin (michael.martin@reactos.org)
 *              Johannes Anderwald (johannes.anderwald@reactos.org)
 */

#include "precomp.h"

static LPWSTR ClientIdentificationAddress = L"HIDCLASS";

ULONG
NTAPI
DllInitialize(ULONG Unknown)
{
    return 0;
}

ULONG
NTAPI
DllUnload()
{
    return 0;
}

NTSTATUS
NTAPI
HidClassAddDevice(
    IN PDRIVER_OBJECT DriverObject,
    IN PDEVICE_OBJECT PhysicalDeviceObject)
{
    UNIMPLEMENTED
    ASSERT(FALSE);
    return STATUS_NOT_IMPLEMENTED;
}

NTSTATUS
NTAPI
HidClassDriverUnload(
    IN PDRIVER_OBJECT DriverObject)
{
    UNIMPLEMENTED
    ASSERT(FALSE);
    return STATUS_NOT_IMPLEMENTED;
}

NTSTATUS
NTAPI
HidClassDispatch(
    IN PDEVICE_OBJECT DeviceObject,
    IN PIRP Irp)
{
    UNIMPLEMENTED
    ASSERT(FALSE);
    return STATUS_NOT_IMPLEMENTED;
}

NTSTATUS
NTAPI
HidRegisterMinidriver(
    IN PHID_MINIDRIVER_REGISTRATION MinidriverRegistration)
{
    NTSTATUS Status;
    PHIDCLASS_DRIVER_EXTENSION DriverExtension;

    /* check if the version matches */
    if (MinidriverRegistration->Revision > HID_REVISION)
    {
        /* revision mismatch */
        ASSERT(FALSE);
        return STATUS_REVISION_MISMATCH;
    }

    /* now allocate the driver object extension */
    Status = IoAllocateDriverObjectExtension(MinidriverRegistration->DriverObject, (PVOID)ClientIdentificationAddress, sizeof(HIDCLASS_DRIVER_EXTENSION), (PVOID*)&DriverExtension);
    if (!NT_SUCCESS(Status))
    {
        /* failed to allocate driver extension */
        ASSERT(FALSE);
        return Status;
    }

    /* zero driver extension */
    RtlZeroMemory(DriverExtension, sizeof(HIDCLASS_DRIVER_EXTENSION));

    /* init driver extension */
    DriverExtension->DriverObject = MinidriverRegistration->DriverObject;
    DriverExtension->DeviceExtensionSize = MinidriverRegistration->DeviceExtensionSize;
    DriverExtension->DevicesArePolled = MinidriverRegistration->DevicesArePolled;
    DriverExtension->AddDevice = MinidriverRegistration->DriverObject->DriverExtension->AddDevice;
    DriverExtension->DriverUnload = MinidriverRegistration->DriverObject->DriverUnload;

    /* copy driver dispatch routines */
    RtlCopyMemory(DriverExtension->MajorFunction, MinidriverRegistration->DriverObject->MajorFunction, sizeof(PDRIVER_DISPATCH) * IRP_MJ_MAXIMUM_FUNCTION);

    /* initialize lock */
    KeInitializeSpinLock(&DriverExtension->Lock);

    /* now replace dispatch routines */
    DriverExtension->DriverObject->DriverExtension->AddDevice = HidClassAddDevice;
    DriverExtension->DriverObject->DriverUnload = HidClassDriverUnload;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_CREATE] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_CLOSE] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_READ] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_WRITE] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_INTERNAL_DEVICE_CONTROL] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_POWER] = HidClassDispatch;
    DriverExtension->DriverObject->MajorFunction[IRP_MJ_PNP] = HidClassDispatch;

    /* done */
    return STATUS_SUCCESS;
}