CDmaChannelInit Class Reference

Inheritance diagram for CDmaChannelInit:

Collaboration diagram for CDmaChannelInit:

Public Member Functions
PVOID	operator new (size_t Size, POOL_TYPE PoolType, ULONG Tag)
STDMETHODIMP	QueryInterface (REFIID InterfaceId, PVOID *Interface)
	CDmaChannelInit (IUnknown *OuterUnknown)
virtual	~CDmaChannelInit ()
Public Member Functions inherited from CUnknownImpl< IDmaChannelInit >
	STDMETHODIMP_ (ULONG) AddRef()
	STDMETHODIMP_ (ULONG) Release()

Public Attributes
	IMP_IDmaChannelInit

Protected Attributes
PDEVICE_OBJECT	m_pDeviceObject
PDMA_ADAPTER	m_pAdapter
BOOL	m_DmaStarted
ULONG	m_MapSize
PVOID	m_MapRegisterBase
ULONG	m_LastTransferCount
ULONG	m_MaximumBufferSize
ULONG	m_MaxMapRegisters
ULONG	m_AllocatedBufferSize
ULONG	m_BufferSize
PHYSICAL_ADDRESS	m_Address
PVOID	m_Buffer
PMDL	m_Mdl
BOOLEAN	m_WriteToDevice

Friends
IO_ALLOCATION_ACTION NTAPI	AdapterControl (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PVOID MapRegisterBase, IN PVOID Context)

Additional Inherited Members
Protected Member Functions inherited from CUnknownImpl< IDmaChannelInit >
	CUnknownImpl ()
virtual	~CUnknownImpl ()

Detailed Description

Definition at line 14 of file dma_slave.cpp.

Constructor & Destructor Documentation

CDmaChannelInit()

CDmaChannelInit::CDmaChannelInit ( IUnknown *  OuterUnknown )

inline

Definition at line 30 of file dma_slave.cpp.

                                             :
        m_pDeviceObject(nullptr),
        m_pAdapter(nullptr),
        m_DmaStarted(FALSE),
        m_MapSize(0),
        m_MapRegisterBase(nullptr),
        m_LastTransferCount(0),
        m_MaximumBufferSize(0),
        m_MaxMapRegisters(0),
        m_AllocatedBufferSize(0),
        m_BufferSize(0),
        m_Address({0}),
        m_Buffer(nullptr),
        m_Mdl(nullptr),
        m_WriteToDevice(FALSE)
    {
    }

~CDmaChannelInit()

virtual CDmaChannelInit::~CDmaChannelInit ( )

inlinevirtual

Definition at line 47 of file dma_slave.cpp.

{}

Member Function Documentation

operator new()

PVOID CDmaChannelInit::operator new ( size_t  Size, POOL_TYPE  PoolType, ULONG  Tag  )

inline

Definition at line 19 of file dma_slave.cpp.

    {
        return ExAllocatePoolWithTag(PoolType, Size, Tag);
    }

QueryInterface()

NTSTATUS NTAPI CDmaChannelInit::QueryInterface	(	REFIID	InterfaceId,
		PVOID *	Interface
	)

Definition at line 82 of file dma_slave.cpp.

{
    if (IsEqualGUIDAligned(refiid, IID_IUnknown) ||
        IsEqualGUIDAligned(refiid, IID_IDmaChannel))
        //IsEqualGUIDAligned(refiid, IID_IDmaChannelSlave)) // HACK
    {
        *Output = PVOID(PUNKNOWN(this));
        PUNKNOWN(*Output)->AddRef();
        return STATUS_SUCCESS;
    }
    DPRINT("No interface!!!\n");
    return STATUS_UNSUCCESSFUL;
}

Friends And Related Function Documentation

AdapterControl

IO_ALLOCATION_ACTION NTAPI AdapterControl ( IN PDEVICE_OBJECT  DeviceObject, IN PIRP  Irp, IN PVOID  MapRegisterBase, IN PVOID  Context  )

friend

Definition at line 290 of file dma_slave.cpp.

{
    ULONG Length;
    CDmaChannelInit * This = (CDmaChannelInit*)Context;
 
    Length = This->m_MapSize;
    This->m_MapRegisterBase = MapRegisterBase;
 
    This->m_pAdapter->DmaOperations->MapTransfer(This->m_pAdapter,
                                                This->m_Mdl,
                                                MapRegisterBase,
                                                (PVOID)((ULONG_PTR)This->m_Mdl->StartVa + This->m_Mdl->ByteOffset),
                                                &Length,
                                                This->m_WriteToDevice);
 
    if (Length == This->m_BufferSize)
    {
        This->m_DmaStarted = TRUE;
    }
 
   return KeepObject;
}

Member Data Documentation

IMP_IDmaChannelInit

CDmaChannelInit::IMP_IDmaChannelInit

Definition at line 29 of file dma_slave.cpp.

m_Address

PHYSICAL_ADDRESS CDmaChannelInit::m_Address

protected

Definition at line 66 of file dma_slave.cpp.

m_AllocatedBufferSize

ULONG CDmaChannelInit::m_AllocatedBufferSize

protected

Definition at line 63 of file dma_slave.cpp.

m_Buffer

PVOID CDmaChannelInit::m_Buffer

protected

Definition at line 67 of file dma_slave.cpp.

m_BufferSize

ULONG CDmaChannelInit::m_BufferSize

protected

Definition at line 64 of file dma_slave.cpp.

m_DmaStarted

BOOL CDmaChannelInit::m_DmaStarted

protected

Definition at line 54 of file dma_slave.cpp.

m_LastTransferCount

ULONG CDmaChannelInit::m_LastTransferCount

protected

Definition at line 59 of file dma_slave.cpp.

m_MapRegisterBase

PVOID CDmaChannelInit::m_MapRegisterBase

protected

Definition at line 57 of file dma_slave.cpp.

m_MapSize

ULONG CDmaChannelInit::m_MapSize

protected

Definition at line 56 of file dma_slave.cpp.

m_MaximumBufferSize

ULONG CDmaChannelInit::m_MaximumBufferSize

protected

Definition at line 61 of file dma_slave.cpp.

m_MaxMapRegisters

ULONG CDmaChannelInit::m_MaxMapRegisters

protected

Definition at line 62 of file dma_slave.cpp.

m_Mdl

PMDL CDmaChannelInit::m_Mdl

protected

Definition at line 68 of file dma_slave.cpp.

m_pAdapter

PDMA_ADAPTER CDmaChannelInit::m_pAdapter

protected

Definition at line 52 of file dma_slave.cpp.

m_pDeviceObject

PDEVICE_OBJECT CDmaChannelInit::m_pDeviceObject

protected

Definition at line 51 of file dma_slave.cpp.

m_WriteToDevice

BOOLEAN CDmaChannelInit::m_WriteToDevice

protected

Definition at line 69 of file dma_slave.cpp.

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The documentation for this class was generated from the following file:

• drivers/wdm/audio/backpln/portcls/dma_slave.cpp