+
+ virtual IOByteCount getFIFODepth(IODirection direction = kIODirectionNone);
+ virtual IOReturn setFIFODepth(IOByteCount depth);
+ virtual IOByteCount validFIFODepth(IOByteCount depth, IODirection direction);
+
+ virtual IOReturn setFrameSize(UInt8 byteCount);
+
+ virtual IOReturn setDMAConfig(UInt32 dmaIndex);
+ virtual bool validDMAConfig(UInt32 dmaIndex);