NdisMoveFromMappedMemory (Windows Embedded CE 6.0)

1/6/2010

This function copies data from device memory that was mapped during initialization with the NdisMMapIoSpace function to a system-space buffer.

Syntax

VOID NdisMoveFromMappedMemory(
  PVOID Destination,
  PVOID Source,
  ULONG Length
);

Parameters

• Destination
  [out] Pointer to a system-space buffer into which this function copies data from mapped device memory. This buffer must be at least Length bytes in size.

• Source
  [in] Specifies the base virtual address within mapped device memory from which to copy the data. This address must fall at least Length bytes from the end of the mapped range.

• Length
  [in] Specifies the number of bytes to copy.

Return Value

None.

Remarks

An NIC driver calls this function to copy data from NIC memory into a buffer in the host, as, for example, when transferring received data into a protocol-supplied buffer or miniport-allocated staging buffer.

Both the Source and Destination pointers are virtual addresses. The virtual range specified by Source and Length must fall within a range of device memory that was mapped during initialization with the NdisMMapIoSpace function.

Requirements

See Also

Reference

NDIS Library Functions
NdisAllocateMemory
NdisMMapIoSpace
NdisMoveMappedMemory
NdisMoveToMappedMemory