IMiniportWavePciStream::MappingAvailable method (portcls.h)

The MappingAvailable method indicates that a new mapping is available.

Syntax

void MappingAvailable();

Return value

None

Remarks

The port driver calls the MappingAvailable method to notify the miniport driver that a new mapping has become available, but it does so only when the miniport driver's previous request for mapping through IPortWavePciStream::GetMapping has been refused.

The port driver (Portcls.sys) can call the MappingAvailable method at any level equal to or below DISPATCH_LEVEL, depending on the circumstances under which the call is made. As a result, the MappingAvailable method must be in a non-paged code segment and can only touch non-paged code.

See the discussion of allocator framing in WavePci Latency.

Requirements

See also

IMiniportWavePciStream

IPortWavePciStream::GetMapping