dma_slave.cpp File Reference

#include "private.hpp"
#include <debug.h>

Include dependency graph for dma_slave.cpp:

Go to the source code of this file.

Classes
class	CDmaChannelInit

Macros
#define	NDEBUG

Functions
IO_ALLOCATION_ACTION NTAPI	AdapterControl (IN PDEVICE_OBJECT DeviceObject, IN PIRP Irp, IN PVOID MapRegisterBase, IN PVOID Context)
NTSTATUS NTAPI	PcNewDmaChannel (OUT PDMACHANNEL *OutDmaChannel, IN PUNKNOWN OuterUnknown OPTIONAL, IN POOL_TYPE PoolType, IN PDEVICE_DESCRIPTION DeviceDescription, IN PDEVICE_OBJECT DeviceObject)

Variables
GUID	IID_IDmaChannelSlave

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 12 of file dma_slave.cpp.

Function Documentation

AdapterControl()

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

Definition at line 302 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;
}

PcNewDmaChannel()

NTSTATUS NTAPI PcNewDmaChannel	(	OUT PDMACHANNEL *	OutDmaChannel,
		IN PUNKNOWN OuterUnknown	OPTIONAL,
		IN POOL_TYPE	PoolType,
		IN PDEVICE_DESCRIPTION	DeviceDescription,
		IN PDEVICE_OBJECT	DeviceObject
	)

Definition at line 491 of file dma_slave.cpp.

{
    NTSTATUS Status;
    CDmaChannelInit * This;

    DPRINT("OutDmaChannel %p OuterUnknown %p PoolType %p DeviceDescription %p DeviceObject %p\n",
            OutDmaChannel, OuterUnknown, PoolType, DeviceDescription, DeviceObject);

    This = new(PoolType, TAG_PORTCLASS)CDmaChannelInit(OuterUnknown);
    if (!This)
        return STATUS_INSUFFICIENT_RESOURCES;

    Status = This->QueryInterface(IID_IDmaChannel, (PVOID*)OutDmaChannel);

    if (!NT_SUCCESS(Status))
    {
        delete This;
        return Status;
    }

    Status = This->Init(DeviceDescription, DeviceObject);

    if (!NT_SUCCESS(Status))
    {
        delete This;
        return Status;
    }

    return Status;
}

Variable Documentation

IID_IDmaChannelSlave

GUID IID_IDmaChannelSlave

Definition at line 17 of file port_wavecyclic.cpp.