DMA_MDD_CHANNEL_CONTEXT (Windows Embedded CE 6.0)

1/6/2010

This structure provides the callback functions and user information necessary to open a channel for Direct Memory Access (DMA).

Syntax

typedef struct _DMA_MDD_CHANNEL_CONTEXT {
    CE_DMA_ADAPTER m_DmaAdapterInfo;
  ULONG m_ulAddressSpace;
  PHYSICAL_ADDRESS m_phDeviceIoAddress;
  DWORD m_dwChannelIndex;
  LPTransferCompleteNotify m_lpTransferCompleteNotify;
}DMA_MDD_CHANNEL_CONTEXT, *PDMA_MDD_CHANNEL_CONTEXT;

Members

• m_DmaAdapterInfo
  CE_DMA_ADAPTER structure that contains information about the adapter.

• m_ulAddressSpace
  The IO or memory mapped IO that will be used for DMA.

• m_phDeviceIoAddress
  The IO or physical memory IO address for the device.

• m_dwChannelIndex
  The DMA channel index.

• m_lpTransferCompleteNotify
  Pointer to a LPTransferCompleteNotify function.

Requirements

See Also

Reference

Direct Memory Access Abstraction MDD Structures