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Diffstat (limited to 'nfp/net/driver/device.cpp')
| -rw-r--r-- | nfp/net/driver/device.cpp | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/nfp/net/driver/device.cpp b/nfp/net/driver/device.cpp deleted file mode 100644 index 599d57b5..00000000 --- a/nfp/net/driver/device.cpp +++ /dev/null @@ -1,261 +0,0 @@ -/*++ - -Copyright (C) Microsoft Corporation, All Rights Reserved. - -Module Name: - - Device.cpp - -Abstract: - - This module contains the implementation of the UMDF sample - driver's device callback object. - -Environment: - - Windows User-Mode Driver Framework (WUDF) - ---*/ - -#include "internal.h" -#include "device.tmh" - -HRESULT -CMyDevice::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. - FxDriver - IWDF Driver for this device. - - Return Value: - - status. - ---*/ -{ - MethodEntry("..."); - - CComPtr<IWDFDevice> fxDevice; - HRESULT hr; - - // - // Configure things like the locking model before we go to create our - // partner device. - // - - // - // Set the locking model - // - - FxDeviceInit->SetLockingConstraint(None); - - // - // TODO: Any per-device initialization which must be done before - // creating the partner object. - // - - // - // Create a new FX device object and assign the new callback object to - // handle any device level events that occur. - // - - // - // 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. - // - - CComPtr<IUnknown> pUnk; - HRESULT hrQI = this->QueryInterface(__uuidof(IUnknown),(void**)&pUnk); - WUDF_SAMPLE_DRIVER_ASSERT(SUCCEEDED(hrQI)); - - hr = FxDriver->CreateDevice(FxDeviceInit, pUnk, &fxDevice); - - // - // If that succeeded then set our FxDevice member variable. - // - - if (SUCCEEDED(hr)) - { - m_FxDevice = fxDevice; - } - - MethodReturnHR(hr); -} - -HRESULT -CMyDevice::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 - ---*/ -{ - MethodEntry("void"); - - // - // Create a new instance of our Queue callback object - // - CComObject<CMyQueue> * defaultQueue = NULL; - HRESULT hr = CComObject<CMyQueue>::CreateInstance(&defaultQueue); - - if (SUCCEEDED(hr)) - { - defaultQueue->AddRef(); - hr = defaultQueue->Initialize(this); - } - - if (SUCCEEDED(hr)) - { - hr = defaultQueue->Configure(); - } - - // - // Create and Enable Device Interfaces for this device. - // - if (SUCCEEDED(hr)) - { - hr = m_FxDevice->CreateDeviceInterface(&GUID_DEVINTERFACE_NETNFP, - NULL); - } - - if (SUCCEEDED(hr)) - { - hr = m_FxDevice->AssignDeviceInterfaceState(&GUID_DEVINTERFACE_NETNFP, - NULL, - TRUE); - } - - if (SUCCEEDED(hr)) - { - hr = m_FxDevice->CreateDeviceInterface(&GUID_DEVINTERFACE_NFP, - NULL); - } - - if (SUCCEEDED(hr)) - { - hr = m_FxDevice->AssignDeviceInterfaceState(&GUID_DEVINTERFACE_NFP, - NULL, - TRUE); - } - - if (SUCCEEDED(hr)) - { - // - // Save a pointer to our queue, so we can lock it during file cleanup - // - m_MyQueue = defaultQueue; - } - - // - // Release the reference we took on the queue object. - // The framework took its own references on the object's callback interfaces - // when we called m_FxDevice->CreateIoQueue, and will manage the object's lifetime. - // - SAFE_RELEASE(defaultQueue); - - MethodReturnHR(hr); -} - -STDMETHODIMP_(void) -CMyDevice::OnCloseFile( - _In_ IWDFFile* pWdfFileObject - ) -{ - MethodEntry("..."); - - m_MyQueue->OnCloseFile(pWdfFileObject); - - MethodReturnVoid(); -} - -STDMETHODIMP_(void) -CMyDevice::OnCleanupFile( - _In_ IWDFFile* /*pWdfFileObject*/ - ) -/*++ - - Routine Description: - - This method is when app with open handle device terminates. - - Arguments: - - pWdfFileObject - the framework file object for which close is handled. - - Return Value: - - None - ---*/ -{ -} - -STDMETHODIMP_(void) -CMyDevice::OnCleanup( - _In_ IWDFObject* pWdfObject - ) -/*++ - - Routine Description: - - This device callback method is invoked by the framework when the WdfObject - is about to be released by the framework. - - Arguments: - - pWdfObject - the framework device object for which OnCleanup. - - Return Value: - - None - ---*/ -{ - MethodEntry("..."); - - WUDF_SAMPLE_DRIVER_ASSERT(pWdfObject == m_FxDevice); - - m_MyQueue = NULL; - - // - // CMyDevice has a reference to framework device object via m_Device. - // Framework device object has a reference to CMyDevice object via the callbacks. - // This leads to circular reference and both the objects can't be destroyed until this circular reference is broken. - // To break the circular reference we release the reference to the framework device object here in OnCleanup. - // - m_FxDevice = NULL; - - MethodReturnVoid(); -} |