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
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Header | portcls.h (include Portcls.h) |
| IRQL | <= DISPATCH_LEVEL (see Remarks section) |