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190 lines
3.4 KiB
190 lines
3.4 KiB
/*++
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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device.cpp
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Abstract:
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Device driver core, initialization, etc.
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--*/
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#define KSDEBUG_INIT
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#include "casamp.h"
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#include "wdmdebug.h"
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#ifdef ALLOC_DATA_PRAGMA
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#pragma const_seg("PAGECONST")
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#endif // ALLOC_DATA_PRAGMA
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#ifdef ALLOC_PRAGMA
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#pragma code_seg("PAGE")
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#endif // ALLOC_PRAGMA
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extern "C"
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NTSTATUS
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DriverEntry(
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IN PDRIVER_OBJECT DriverObject,
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IN PUNICODE_STRING RegistryPathName
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)
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/*++
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Routine Description:
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Sets up the driver object.
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Arguments:
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DriverObject -
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Driver object for this instance.
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RegistryPathName -
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Contains the registry path which was used to load this instance.
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Return Values:
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Returns STATUS_SUCCESS if the driver was initialized.
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--*/
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{
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NTSTATUS Status = STATUS_SUCCESS;
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_DbgPrintF(DEBUGLVL_VERBOSE,("DriverEntry"));
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// DEBUG_BREAK;
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Status = KsInitializeDriver( DriverObject,
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RegistryPathName,
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&DeviceDescriptor);
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// DEBUG_BREAK;
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return Status;
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}
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STDMETHODIMP_(NTSTATUS)
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CDevice::
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Create(
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IN PKSDEVICE Device
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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CDevice * pDevice = NULL;
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// DEBUG_BREAK;
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_DbgPrintF(DEBUGLVL_VERBOSE,("CDevice::Create"));
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ASSERT(Device);
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// Allocate memory for the our device class.
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//
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pDevice = new(PagedPool,'IDsK') CDevice;
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if (pDevice)
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{
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Device->Context = pDevice;
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} else
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{
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Status = STATUS_INSUFFICIENT_RESOURCES;
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goto errExit;
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}
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// Point back to the KSDEVICE.
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//
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pDevice->m_pKSDevice = Device;
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errExit:
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return Status;
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}
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STDMETHODIMP_(NTSTATUS)
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CDevice::
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Start(
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IN PKSDEVICE pKSDevice,
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IN PIRP pIrp,
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IN PCM_RESOURCE_LIST pTranslatedResourceList OPTIONAL,
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IN PCM_RESOURCE_LIST pUntranslatedResourceList OPTIONAL
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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CDevice * pDevice;
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// DEBUG_BREAK;
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_DbgPrintF( DEBUGLVL_VERBOSE, ("CDevice::Start"));
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ASSERT( pKSDevice);
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// DEBUG_BREAK;
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pDevice = reinterpret_cast<CDevice *>(pKSDevice->Context);
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ASSERT(pDevice);
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// initialize private class variables in pDevice here
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/*
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// Initialize the tuner hardware.
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//
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Status = pDevice->Initialize();
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if (Status != STATUS_SUCCESS)
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{
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goto errExit;
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}
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*/
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// Create the the Tuner Filter Factory. This factory is used to
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// create instances of the tuner filter.
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//
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Status = BdaCreateFilterFactory( pKSDevice,
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&InitialTunerFilterDescriptor,
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&TunerBdaFilterTemplate
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);
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if (!NT_SUCCESS(Status))
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{
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goto errExit;
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}
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errExit:
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return Status;
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}
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NTSTATUS
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CDevice::
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AcquireResources(
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POUR_TUNER_RESOURCE pNewTunerResource,
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PULONG pulAquiredResourceID
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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//$Review - Add resource managment code here.
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//this is where a new frequency defined in pNewTunerResource
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//needs to be set as the frequency we are tuneing to
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//errExit:
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return Status;
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}
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NTSTATUS
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CDevice::
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ReleaseResources(
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ULONG ulAquiredResourceID
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)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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//$REVIEW - Put Resource management code here.
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return Status;
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}
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