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Diffstat (limited to 'gpio/samples/simdeviceumdf/device.cpp')
-rw-r--r--gpio/samples/simdeviceumdf/device.cpp1106
1 files changed, 0 insertions, 1106 deletions
diff --git a/gpio/samples/simdeviceumdf/device.cpp b/gpio/samples/simdeviceumdf/device.cpp
deleted file mode 100644
index 0ced0bd1..00000000
--- a/gpio/samples/simdeviceumdf/device.cpp
+++ /dev/null
@@ -1,1106 +0,0 @@
-/*++
-
-Copyright (c) 1990-2010 Microsoft Corporation
-
-Module Name:
-
- Device.cpp
-
-Abstract:
-
- This is a simple UMDF device driver that consumes GPIO pins for I/O and interrupt.
-
-
-Environment:
-
- UMDF
-
---*/
-
-//
-// Inlcude the below set of headers to get the CM_RESOURCE_ definitions
-//
-
-
-#include "internal.h"
-
-DEFINE_GUID (GUID_DEVINTERFACE_ECHO,
- 0xcdc35b6e, 0xbe4, 0x4936, 0xbf, 0x5f, 0x55, 0x37, 0x38, 0xa, 0x7c, 0x1a);
-// {CDC35B6E-0BE4-4936-BF5F-5537380A7C1A}
-
-
-HRESULT
-CSimdevice::CreateInstance(
- _In_ IWDFDriver *FxDriver,
- _In_ IWDFDeviceInitialize * FxDeviceInit,
- _Out_ PCSimdevice *Device
- )
-/*++
-
- Routine Description:
-
- This method creates and initializs an instance of the driver's
- device callback object.
-
- Arguments:
-
- FxDeviceInit - the settings for the device.
-
- Device - a location to store the referenced pointer to the device object.
-
- Return Value:
-
- Status
-
---*/
-{
- PCSimdevice device;
- HRESULT hr;
-
- //
- // Allocate a new instance of the device class.
- //
-
- device = new CSimdevice();
-
- if (NULL == device) {
- return E_OUTOFMEMORY;
- }
-
- //
- // Initialize the instance.
- //
-
- hr = device->Initialize(FxDriver, FxDeviceInit);
-
- if (SUCCEEDED(hr)) {
- *Device = device;
- }
- else {
- device->Release();
- }
-
- return hr;
-}
-
-HRESULT
-CSimdevice::Initialize(
- _In_ IWDFDriver * FxDriver,
- _In_ IWDFDeviceInitialize * FxDeviceInit
- )
-
-/*++
-
- Routine Description:
-
- This method initializes the device callback object and creates the
- partner device object.
-
- The method should perform any device-specific configuration that:
- * could fail (these can't be done in the constructor)
- * must be done before the partner object is created -or-
- * can be done after the partner object is created and which aren't
- influenced by any device-level parameters the parent (the driver
- in this case) might set.
-
- Arguments:
-
- FxDeviceInit - the settings for this device.
-
- Return Value:
-
- status.
-
---*/
-{
- IWDFDevice *fxDevice;
- IWDFDeviceInitialize2 *fxDeviceInit2;
- HRESULT hr;
-
- //
- // Configure things like the locking model before we go to create our
- // partner device.
- //
-
- //
- // Set no locking unless you need an automatic callbacks synchronization
- //
-
- FxDeviceInit->SetLockingConstraint(None);
-
- //
- // Create a new FX device object and assign the new callback object to
- // handle any device level events that occur.
- //
-
- //
- // Set retrieval mode to direct I/O. This needs to be done before the call
- // to CreateDevice.
- //
-
- FxDeviceInit->QueryInterface(IID_PPV_ARGS(&fxDeviceInit2));
-
- if (fxDeviceInit2 == NULL) {
- hr = E_FAIL;
- return hr;
- }
-
- fxDeviceInit2->SetIoTypePreference(WdfDeviceIoBufferRetrievalDeferred,
- WdfDeviceIoDirect,
- WdfDeviceIoDirect);
-
- SAFE_RELEASE(fxDeviceInit2);
-
- //
- // QueryIUnknown references the IUnknown interface that it returns
- // (which is the same as referencing the device). We pass that to
- // CreateDevice, which takes its own reference if everything works.
- //
-
- {
- IUnknown *unknown = this->QueryIUnknown();
-
- hr = FxDriver->CreateDevice(FxDeviceInit, unknown, &fxDevice);
-
- unknown->Release();
- }
-
- //
- // If that succeeded then set our FxDevice member variable.
- //
-
- if (SUCCEEDED(hr)) {
- m_FxDevice = fxDevice;
-
- //
- // Drop the reference we got from CreateDevice. Since this object
- // is partnered with the framework object they have the same
- // lifespan - there is no need for an additional reference.
- //
-
- fxDevice->Release();
- }
-
- return hr;
-}
-
-HRESULT
-CSimdevice::Configure(
- VOID
- )
-/*++
-
- Routine Description:
-
- This method is called after the device callback object has been initialized
- and returned to the driver. It would setup the device's queues and their
- corresponding callback objects.
-
- Arguments:
-
- FxDevice - the framework device object for which we're handling events.
-
- Return Value:
-
- status
-
---*/
-{
- PCSimdeviceQueue defaultQueue;
-
- HRESULT hr;
-
- hr = CSimdeviceQueue::CreateInstance(m_FxDevice, &defaultQueue);
-
- if (FAILED(hr)) {
- return hr;
- }
-
- hr = defaultQueue->Configure();
-
- if (SUCCEEDED(hr)) {
- //
- // In case of success store defaultQueue in our member
- // The reference is transferred to m_DefaultQueue
- //
-
- m_Queue = defaultQueue;
- }
- else {
- //
- // In case of failure release the reference
- //
-
- defaultQueue->Release();
- }
-
- if (SUCCEEDED(hr)) {
- hr = m_FxDevice->CreateDeviceInterface(&GUID_DEVINTERFACE_ECHO,
- NULL);
- }
-
- return hr;
-}
-
-HRESULT
-CSimdevice::QueryInterface(
- _In_ REFIID InterfaceId,
- _Out_ PVOID *Object
- )
-/*++
-
- Routine Description:
-
- This method is called to get a pointer to one of the object's callback
- interfaces.
-
- Since the sample driver doesn't support any of the device events, this
- method simply calls the base class's BaseQueryInterface.
-
- If the sample is extended to include device event interfaces then this
- method must be changed to check the IID and return pointers to them as
- appropriate.
-
- Arguments:
-
- InterfaceId - the interface being requested
-
- Object - a location to store the interface pointer if successful
-
- Return Value:
-
- S_OK or E_NOINTERFACE
-
---*/
-{
- HRESULT hr;
-
- if (IsEqualIID(InterfaceId, __uuidof(IPnpCallbackSelfManagedIo))) {
- *Object = QueryIPnpCallbackSelfManagedIo();
- hr = S_OK;
- } else if (IsEqualIID(InterfaceId, __uuidof(IPnpCallbackHardware2))) {
- *Object = QueryIPnpCallbackHardware2();
- hr = S_OK;
- } else if (IsEqualIID(InterfaceId, __uuidof(IPnpCallback))) {
- *Object = QueryIPnpCallback();
- hr = S_OK;
- } else {
- hr = CUnknown::QueryInterface(InterfaceId, Object);
- }
-
- return hr;
-}
-
-HRESULT
-CSimdevice::OnSelfManagedIoInit(
- _In_ IWDFDevice * pWdfDevice
- )
-/*++
-
- Routine Description:
-
- This method is called to allow driver to initialize any resources
- that driver might need to process I/O.
-
- Echo driver needs a thread to process completions. We initialize
- this thread here
-
- Arguments:
-
- pWdfDevice - framework device object for which to initialze resources
-
- Return Value:
-
- S_OK in case of success
- HRESULT correponding to error returned by CreateThread, in case of failure
-
---*/
-{
- HRESULT hr = S_OK;
-
- UNREFERENCED_PARAMETER(pWdfDevice);
-
-
- m_ThreadHandle = CreateThread( NULL, // Default Security Attrib.
- 0, // Initial Stack Size,
- CSimdeviceQueue::CompletionThread, // Thread Func
- (LPVOID)m_Queue, // Arg to Thread Func is Queue
- 0, // Creation Flags
- NULL ); // Don't need the Thread Id.
-
- if (m_ThreadHandle == NULL) {
- hr = HRESULT_FROM_WIN32(GetLastError());
- }
-
- return hr;
-}
-
-void
-CSimdevice::OnSelfManagedIoCleanup(
- _In_ IWDFDevice * pWdfDevice
- )
-/*++
-
- Routine Description:
-
- This method is called to allow driver to cleanup any resources
- that driver allocated to process I/O.
-
- It is critical that, in this routine driver wait for all of the
- threads which it created to exit. Otherwise those threads could
- continue to execute when framework unloads the driver which
- would lead to a crash.
-
- Echo driver created a thread to handle completions. We wait for
- that thread to exit in this routine
-
- Arguments:
-
- pWdfDevice - framework device object for which to cleanup resources
-
- Return Value:
-
- None
-
---*/
-{
- //
- // Kill the thread and
- // wait for the thread to die.
- //
-
- UNREFERENCED_PARAMETER(pWdfDevice);
-
- if (m_ThreadHandle) {
-
- //
- // Ask queue to set terminate flag which will make
- // the thread exit
- //
-
- m_Queue->SetExitThread();
-
- //
- // Wait for the thread to exit
- //
-
- WaitForSingleObject(m_ThreadHandle, INFINITE);
-
- //
- // Close the thread handle
- //
-
- CloseHandle(m_ThreadHandle);
- m_ThreadHandle = NULL;
- }
-
- //
- // Release the reference we took on the queue callback object
- // to keep it alive until the thread exits
- //
-
- SAFE_RELEASE(m_Queue);
-}
-
-
-HRESULT
-CSimdevice::OnPrepareHardware(
- _In_ IWDFDevice3 * pWdfDevice,
- _In_ IWDFCmResourceList * pWdfResourcesRaw,
- _In_ IWDFCmResourceList * pWdfResourcesTranslated
- )
-/*++
-
-Routine Description:
-
- This routine is called by WUDF to initialize hardware resources (e.g. interrupts,
- IO resources)
-
-Arguments:
-
- pWdfDevice - pointer to an IWDFDevice object for the device
-
- pWdfResourcesRaw - Supplies a pointer to a collection of framework resource
- objects. This collection identifies the raw (bus-relative) hardware
- resources that have been assigned to the device.
-
- pWdfResourcesTranslated - Supplies a pointer to a collection of framework
- resource objects. This collection identifies the translated
- (system-physical) hardware resources that have been assigned to the
- device. The resources appear from the CPU's point of view.
-
-Return Value:
-
- HRESULT
-
---*/
-{
-
- ULONG i;
- HRESULT hr = S_OK;
- ULONG ConnectionCount = 0;
- BOOLEAN fInterruptFound = FALSE;
- PCM_PARTIAL_RESOURCE_DESCRIPTOR DescriptorTranslated;
- PCM_PARTIAL_RESOURCE_DESCRIPTOR DescriptorRaw;
-
- //
- // Parse the resource list and save the resource information.
- //
-
- for (i=0; i < pWdfResourcesTranslated->GetCount(); i++) {
-
- DescriptorTranslated = (PCM_PARTIAL_RESOURCE_DESCRIPTOR)pWdfResourcesTranslated->GetDescriptor(i);
- DescriptorRaw = (PCM_PARTIAL_RESOURCE_DESCRIPTOR)pWdfResourcesRaw->GetDescriptor(i);
-
- if(DescriptorTranslated == NULL) {
- return E_FAIL;
- }
-
- switch (DescriptorTranslated->Type) {
-
- //
- // One or more GPIO IO resources are expected. In this implementation of the sample
- // driver, however, only the first IO resource will be used (see OnD0Entry).
- //
-
- case CmResourceTypeConnection:
-
- //
- // Check against expected connection type for a GPIO IO descriptor
- //
-
- if ((DescriptorTranslated->u.Connection.Class ==
- CM_RESOURCE_CONNECTION_CLASS_GPIO) &&
- (DescriptorTranslated->u.Connection.Type ==
- CM_RESOURCE_CONNECTION_TYPE_GPIO_IO)) {
-
- if (ConnectionCount >= MAX_CONNECTIONS) {
- break;
- }
-
- //
- // Store GPIO IO resource connection ID in the device extension
- //
-
- this->GetDeviceExtension()->ConnectionId[ConnectionCount].LowPart =
- DescriptorTranslated->u.Connection.IdLowPart;
-
- this->GetDeviceExtension()->ConnectionId[ConnectionCount].HighPart =
- DescriptorTranslated->u.Connection.IdHighPart;
- }
-
- break;
-
- case CmResourceTypeInterrupt:
-
- //
- // Connect the first interrupt resource we find
- //
-
- if (fInterruptFound == FALSE) {
- hr = this->SimdeviceConnectInterrupt(
- pWdfDevice,
- DescriptorRaw,
- DescriptorTranslated);
-
- if (SUCCEEDED(hr)) {
- fInterruptFound = TRUE;
- }
- }
- default:
-
- //
- // Ignore all other descriptors
- //
-
- break;
- }
- }
-
- return hr;
-
-}
-
-HRESULT
-CSimdevice::OnReleaseHardware(
- _In_ IWDFDevice3 * pWdfDevice,
- _In_ IWDFCmResourceList * pWdfResourcesTranslated
- )
-/*++
-
-
-Routine Description:
-
- This method is called by WUDF to uninitialize the hardware.
-
-Parameters:
-
- pWdfDevice - pointer to an IWDFDevice object for the device
-
- pWdfResourcesTranslated - pointer to the translated resource list
-
-Return Values:
- status
-
---*/
-{
- UNREFERENCED_PARAMETER(pWdfDevice);
- UNREFERENCED_PARAMETER(pWdfResourcesTranslated);
-
- return S_OK;
-}
-
-HRESULT
-CSimdevice::OnD0Entry(
- _In_ IWDFDevice* pWdfDevice,
- _In_ WDF_POWER_DEVICE_STATE previousState
- )
-
-/*++
-
-Routine Description:
-
-This method is called after a new device enters the system
-
-Parameters:
-
- pWdfDevice - pointer to a device object
-
- previousState - previous WDF power state
-
-Return Values:
- status
-
---*/
-{
-
- PDEVICE_EXTENSION DevExt;
- HRESULT hr = S_OK;
- BYTE Data;
- NTSTATUS Status;
- NTSTATUS Status1;
- WCHAR ReadStringBuffer[100];
- WCHAR WriteStringBuffer[100];
-
- UNREFERENCED_PARAMETER(pWdfDevice);
- UNREFERENCED_PARAMETER(previousState);
-
- DevExt = GetDeviceExtension();
-
- Status = StringCbPrintfW(&ReadStringBuffer[0],
- sizeof(ReadStringBuffer),
- L"\\\\.\\RESOURCE_HUB\\%0*I64x",
- (size_t)(sizeof(LARGE_INTEGER) * 2),
- DevExt->ConnectionId[0].QuadPart);
-
- Status = StringCbPrintfW(&WriteStringBuffer[0],
- sizeof(WriteStringBuffer),
- L"\\\\.\\RESOURCE_HUB\\%0*I64x",
- (size_t)(sizeof(LARGE_INTEGER) * 2),
- DevExt->ConnectionId[0].QuadPart);
-
- //
- // Connect the first GPIO IO descriptor we find (in OnPrepareHardware) for read and write operations
- //
-
- Data = 0xDB;
- Status = STATUS_SUCCESS;
- Status1 = TestReadWrite(pWdfDevice, &WriteStringBuffer[0], FALSE, &Data, sizeof(Data), NULL);
- if (!NT_SUCCESS(Status1)) {
- Status = Status1;
- }
-
- Data = 0;
- Status1 = TestReadWrite(pWdfDevice, &ReadStringBuffer[0], TRUE, &Data, sizeof(Data), NULL);
- if (!NT_SUCCESS(Status1)) {
- Status = Status1;
- }
-
- return hr;
-}
-
-HRESULT
-CSimdevice::OnD0Exit(
- _In_ IWDFDevice* pWdfDevice,
- _In_ WDF_POWER_DEVICE_STATE TargetState
- )
-
-/*++
-
-Routine Description:
-
-This method is called when a device exit D0
-
-Parameters:
-
- pWdfDevice pointer to a device object
-
- TargetState - target D-state
-
-Return Values:
- status
-
---*/
-
-{
-
- UNREFERENCED_PARAMETER(pWdfDevice);
- UNREFERENCED_PARAMETER(TargetState);
-
- return S_OK;
-}
-
-HRESULT
-CSimdevice::TestReadWrite(
- _In_ IWDFDevice* pWdfDevice,
- _In_ PWSTR RequestString,
- _In_ BOOLEAN ReadOperation,
- _Inout_updates_bytes_(Size) UCHAR *Data,
- _In_ ULONG Size,
- _Inout_opt_ IWDFRemoteTarget *IoTargetOut
- )
-
-/*++
-
-Routine Description:
-
- This is a utility routine to test read or write on a set of GPIO pins.
-
-Arguments:
-
- pWdfDevice - Supplies a pointer to the framework device object.
-
- RequestString - Supplies a pointer to the unicode string to be opened.
-
- ReadOperation - Supplies a boolean that identifies whether read (TRUE) or
- write (FALSE) should be performed.
-
- Data - Supplies a pointer containing the buffer that should be read from
- or written to.
-
- Size - Supplies the size of the data buffer in bytes.
-
- IoTargetOut - Supplies a pointer that receives the IOTARGET created by
- UMDF.
-
-Return Value:
-
- HRESULT
-
---*/
-
-{
-
- IWDFMemory *pOutputMemory = NULL;
- IWDFMemory *pInputMemory = NULL;
- IRequestCallbackRequestCompletion *pICallback = NULL;
- IWDFIoRequest *pIoRequest = NULL;
- IWDFRemoteTarget *pRemoteTarget = NULL;
- UMDF_IO_TARGET_OPEN_PARAMS OpenParams;
- DWORD DesiredAccess;
- HRESULT hr = S_OK;
- IWDFRequestCompletionParams * FxComplParams = NULL;
- IWDFDriver *pWdfDriver = NULL;
-
- UNREFERENCED_PARAMETER(IoTargetOut);
-
- if (ReadOperation != FALSE) {
- DesiredAccess = FILE_GENERIC_READ;
-
- } else {
- DesiredAccess = FILE_GENERIC_WRITE;
- }
-
- //
- // QueryIUnknown references the IUnknown interface that it returns
- // (which is the same as referencing the CMyRemoteTarget). We pass that
- // to the various Create* calls, which take their own reference if
- // everything works.
- //
-
- IUnknown * unknown = this->QueryIUnknown();
-
-
- IWDFDevice2 *pWdfDevice2 = NULL;
- hr = pWdfDevice->QueryInterface(IID_PPV_ARGS(&pWdfDevice2));
-
- // Create the IoTarget
-
- if (SUCCEEDED(hr)) {
- hr = pWdfDevice2->CreateRemoteTarget(
- unknown,
- NULL,
- &pRemoteTarget);
- }
-
- //
- // Determine whether the request is a read or write
- //
-
- OpenParams.dwCreationDisposition = OPEN_EXISTING;
- OpenParams.dwFlagsAndAttributes = FILE_FLAG_OVERLAPPED;
- OpenParams.dwShareMode = FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE;
-
-
- if (SUCCEEDED(hr)) {
- hr = pRemoteTarget->OpenFileByName(RequestString,
- DesiredAccess,
- &OpenParams);
- }
-
- //
- //Create a new IO request
- //
-
- if (SUCCEEDED(hr)) {
- hr = pWdfDevice->CreateRequest(NULL, pWdfDevice, &pIoRequest);
- }
-
- if (SUCCEEDED(hr)) {
- hr = this->QueryInterface(__uuidof(IRequestCallbackRequestCompletion), (PVOID*)&pICallback);
-
- //
- //Set completion callback
- //
-
- if (SUCCEEDED(hr)){
- pIoRequest->SetCompletionCallback(pICallback, NULL);
- }
-
- pWdfDevice->GetDriver(&pWdfDriver);
-
- hr = pWdfDriver->CreatePreallocatedWdfMemory(Data,
- Size,
- NULL, // no object event callback
- pIoRequest, // request object as parent
- &pInputMemory);
-
- hr = pWdfDriver->CreatePreallocatedWdfMemory(Data,
- Size,
- NULL, // no object event callback
- pIoRequest, // request object as parent
- &pOutputMemory);
-
- //
- //Format IO request
- //
-
- if (ReadOperation != FALSE){
- if (SUCCEEDED(hr)) {
- hr = pRemoteTarget->FormatRequestForIoctl(pIoRequest,
- IOCTL_GPIO_READ_PINS,
- NULL,
- NULL,
- NULL,
- pOutputMemory,
- NULL);
- }
- }
- else {
- if (SUCCEEDED(hr)) {
- hr = pRemoteTarget->FormatRequestForIoctl(pIoRequest,
- IOCTL_GPIO_WRITE_PINS,
- NULL,
- pInputMemory,
- NULL,
- pOutputMemory,
- NULL);
- }
- }
-
- //
- //Send down the request
- //
- if (SUCCEEDED(hr)) {
- hr = pIoRequest->Send(pRemoteTarget,
- WDF_REQUEST_SEND_OPTION_SYNCHRONOUS,
- 0); //No timeout
- }
-
- if (SUCCEEDED(hr)) {
-
- //
- //Get IWDFRequestCompletionParams interface and then get completion status.
- //
-
- pIoRequest->GetCompletionParams(&FxComplParams);
- hr = FxComplParams->GetCompletionStatus();
- }
-
- if(FAILED(hr)) {
- pIoRequest->DeleteWdfObject();
- pIoRequest = NULL;
- }
- }
-
- //
- // Clean-up
- //
-
- if (pWdfDevice2 != NULL) {
- SAFE_RELEASE(pWdfDevice2);
- }
-
- if (pWdfDriver != NULL) {
- SAFE_RELEASE(pWdfDriver);
- }
-
- if (pRemoteTarget != NULL) {
- pRemoteTarget->Close();
- }
-
- return hr;
-}
-
-
-void
-CSimdevice::OnSurpriseRemoval(
- _In_ IWDFDevice* pWdfDevice
- )
-
-/*++
-
-Routine Description:
-
-This method is called when a device is surprise removed
-
-Parameters:
-
- pWdfDevice pointer to a device object
-
-Return Values:
- None
-
---*/
-
-{
- UNREFERENCED_PARAMETER(pWdfDevice);
-}
-
-
-HRESULT
-CSimdevice::OnQueryRemove(
- _In_ IWDFDevice* pWdfDevice
- )
-/*++
-
-Routine Description:
-
-This method is called when a device processes the query remove IRP
-
-Parameters:
-
- pWdfDevice pointer to a device object
-
-Return Values:
- HRESULT
-
---*/
-
-
-{
- UNREFERENCED_PARAMETER(pWdfDevice);
- return S_OK;
-}
-
-HRESULT
-CSimdevice::OnQueryStop(
- _In_ IWDFDevice* pWdfDevice
- )
-/*++
-
-Routine Description:
-
-This method is called when a device processes the query stop IRP
-
-Parameters:
-
- pWdfDevice pointer to a device object
-
-Return Values:
- HRESULT
-
---*/
-{
- UNREFERENCED_PARAMETER(pWdfDevice);
- return S_OK;
-}
-
-HRESULT
-CSimdevice::SimdeviceConnectInterrupt(
- _In_ IWDFDevice* pWdfDevice,
- _In_opt_ PCM_PARTIAL_RESOURCE_DESCRIPTOR RawResource,
- _In_opt_ PCM_PARTIAL_RESOURCE_DESCRIPTOR TranslatedResource
- )
-
-/*++
-
-Routine Description:
-
- This is a utility routine to create an interrupt descriptor from the interrupt resource
- acquired from OnPrepareHardware and connect the device ISR routine.
-Arguments:
-
- pWdfDevice - Supplies a pointer to the framework device object.
-
- pWdfResourcesRaw - Supplies a pointer to a collection of framework resource
- objects. This collection identifies the raw (bus-relative) hardware
- resources that have been assigned to the device.
-
- pWdfResourcesTranslated - Supplies a pointer to a collection of framework
- resource objects. This collection identifies the translated
- (system-physical) hardware resources that have been assigned to the
- device. The resources appear from the CPU's point of view.
-
-Return Value:
-
- None.
-
---*/
-
-{
-
- IWDFDevice3 * pIWDFDevice3 = NULL;
- IWDFInterrupt * spInterrupt = NULL;
- HRESULT hr = S_OK;
-
- if (pWdfDevice == NULL) {
- hr = E_INVALIDARG;
- }
-
- if (SUCCEEDED(hr)) {
- hr = pWdfDevice->QueryInterface(IID_PPV_ARGS(&pIWDFDevice3));
- }
-
- if (SUCCEEDED(hr)) {
-
- //
- // Create interrupt
- //
-
- WUDF_INTERRUPT_CONFIG config;
- WUDF_INTERRUPT_CONFIG_INIT(
- &config,
- &CSimdevice::OnInterruptIsr,
- &CSimdevice::OnInterruptWorkItem);
-
- config.InterruptRaw = RawResource;
- config.InterruptTranslated = TranslatedResource;
-
- hr = pIWDFDevice3->CreateInterrupt(&config, &spInterrupt);
- }
-
- //
- // Associate the device context with the interrupt
- //
-
- if (SUCCEEDED(hr)) {
- hr = spInterrupt->AssignContext(NULL, (void*)this);
- }
-
- return hr;
-}
-
-BOOLEAN
-CSimdevice::OnInterruptIsr(
- _In_ IWDFInterrupt* pInterrupt,
- _In_ ULONG MessageID,
- _In_ ULONG Reserved
- )
-
-/* ++
-
-Routine Description:
-
- This method is called when an interrupt occurs. It determines if the
- driver owns the interrupt and queues a work item to defer processing
- of the data.
-
- Arguments:
-
- pInterrupt - pointer to the interrupt object
- MessageID - interrupt message ID
- Reserved -
-
-Return Values:
- TRUE if interrupt recognized, else FALSE.
-
--- */
-
-{
-
- UNREFERENCED_PARAMETER(MessageID);
- UNREFERENCED_PARAMETER(Reserved);
-
- IWDFDevice* pWdfDevice = NULL;
- CSimdevice* pMyDevice = NULL;
- HRESULT hr;
-
- hr = pInterrupt->RetrieveContext((void**)&pMyDevice);
-
- if (FAILED(hr)) {
- pWdfDevice = pInterrupt->GetDevice();
- pWdfDevice->SetPnpState(WdfPnpStateFailed, WdfTrue);
- pWdfDevice->CommitPnpState();
- }
-
- //
- // The sample driver always returns TRUE (e.g. claiming the interrupt)
- // from its ISR. In reality, the driver needs to do whatever necessary to
- // quiesce the interrupt before claiming the interrupt.
- // If additional work needs to be done at , schedule a work item (as we do here).
- //
-
- pInterrupt->QueueWorkItemForIsr();
-
- return TRUE;
-}
-
-VOID
-CSimdevice::OnInterruptWorkItem(
- _In_ IWDFInterrupt* pInterrupt,
- _In_ IWDFObject* AssociatedObject
- )
-
-/* ++
-
-Routine Description:
-
- This method is called on behalf of an interrupt to defer processing.
- It retrieves latest data and posts it.
-
-Arguments:
- pInterrupt - pointer to the interrupt object
- AssociatedObject - pointer to the associated object
-
-Return Values:
- None.
-
---*/
-{
-
- UNREFERENCED_PARAMETER(AssociatedObject);
-
- IWDFDevice* pWdfDevice = NULL;
- CSimdevice* pMyDevice;
- HRESULT hr;
-
- hr = pInterrupt->RetrieveContext((void**)&pMyDevice);
-
- if (FAILED(hr)) {
- pWdfDevice = pInterrupt->GetDevice();
- pWdfDevice->SetPnpState(WdfPnpStateFailed, WdfTrue);
- pWdfDevice->CommitPnpState();
- }
-
-
- //
- // The sample driver does nothing in the work item routine. The real driver
- // can add code here to accomplish all that is required to complete the serving
- // of the interrupt
- //
-
- return;
-}
-
-
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-16 23:45:25 +0000