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/*++
Copyright (c) Microsoft Corporation. All rights reserved.
Module Name:
device.c
Abstract:
This file contains the device entry points and callbacks.
Environment:
Windows User-Mode Driver Framework
--*/
#include "precomp.h"
#include "Trace.h"
#include "Defaults.h"
#include "Device.h"
#include "FixSession.h"
#include "FixHandler.h"
#include "Queue.h"
#include "Device.tmh"
CDevice::CDevice(
_In_ WDFDEVICE Device
) :
_Device(Device),
_Queue(nullptr)
{
}
CDevice::~CDevice()
{
if (_Queue != nullptr)
{
_Queue = nullptr;
}
}
CQueue*
CDevice::GetQueue()
{
return _Queue;
}
NTSTATUS
CDevice::OnDeviceAdd(
_In_ WDFDRIVER /*Driver*/,
_Inout_ PWDFDEVICE_INIT DeviceInit
)
{
NTSTATUS status = STATUS_SUCCESS;
WDF_PNPPOWER_EVENT_CALLBACKS powerCallbacks;
WDF_PNPPOWER_EVENT_CALLBACKS_INIT(&powerCallbacks);
powerCallbacks.EvtDeviceD0Entry = CDevice::OnD0Entry;
powerCallbacks.EvtDeviceD0Exit = CDevice::OnD0Exit;
WdfDeviceInitSetPnpPowerEventCallbacks(DeviceInit, &powerCallbacks);
WDF_OBJECT_ATTRIBUTES deviceAttributes;
WDF_OBJECT_ATTRIBUTES_INIT_CONTEXT_TYPE(&deviceAttributes,
CDevice);
deviceAttributes.EvtCleanupCallback = CDevice::OnCleanup;
deviceAttributes.SynchronizationScope = WdfSynchronizationScopeNone;
deviceAttributes.ExecutionLevel = WdfExecutionLevelPassive;
WDFDEVICE device;
status = WdfDeviceCreate(&DeviceInit, &deviceAttributes, &device);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DEVICE, "WdfDeviceCreate failed with Status %!STATUS!", status);
goto Exit;
}
// Construct device object on the preallocated buffer using placement 'new'
CDevice* pDevice = new (GetDeviceObject(device)) CDevice(device);
status = pDevice->Initialize();
Exit:
return status;
}
NTSTATUS
CDevice::Initialize()
{
NTSTATUS status = STATUS_SUCCESS;
status = CQueue::AddQueueToDevice(_Device, &_Queue);
// Register GNSS Device interface. Note that this sample is not publishing a symbolic link.
status = WdfDeviceCreateDeviceInterface(_Device,
(LPGUID)&GUID_DEVINTERFACE_GNSS,
nullptr);
if (!NT_SUCCESS(status))
{
TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_DEVICE, "WdfDeviceCreateDeviceInterface failed with %!STATUS!", status);
goto Exit;
}
Exit:
return status;
}
void
CDevice::OnCleanup(
_In_ WDFOBJECT Object
)
{
CDevice *pDevice = GetDeviceObject(Object);
// Device object constructed using placement 'new' so explicitly invoke destructor
pDevice->~CDevice();
}
NTSTATUS
CDevice::OnD0Entry(
_In_ WDFDEVICE /*Device*/,
_In_ WDF_POWER_DEVICE_STATE /*PreviousState*/
)
{
NTSTATUS status;
//
// FIX ME:
// Add further functionality.
// Refer to power consideration from MSDN document: https://docs.microsoft.com/en-us/windows-hardware/drivers/gnss/gnss-driver-requirements
//
status = STATUS_SUCCESS;
return status;
}
NTSTATUS
CDevice::OnD0Exit(
_In_ WDFDEVICE /*Device*/,
_In_ WDF_POWER_DEVICE_STATE /*TargetState*/
)
{
NTSTATUS status;
//
// FIX ME:
// Add further functionality.
// Refer to power consideration from MSDN document: https://docs.microsoft.com/en-us/windows-hardware/drivers/gnss/gnss-driver-requirements
//
status = STATUS_SUCCESS;
return status;
}
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