397 IODMACommand::setMemoryDescriptor(const IOMemoryDescriptor *mem, bool autoPrepare)  in setMemoryDescriptor()  argument
401 	if (mem == fMemory) {  in setMemoryDescriptor()
420 	if (mem) {  in setMemoryDescriptor()
422 		err = mem->dmaCommandOperation(kIOMDGetCharacteristics | (kMapped == MAPTYPE(fMappingOptions)),  in setMemoryDescriptor()
438 		fMemory.reset(const_cast<IOMemoryDescriptor *>(mem), OSRetain);  in setMemoryDescriptor()
441 			mem->dmaCommandOperation(kIOMDSetDMAActive, this, 0);  in setMemoryDescriptor()
483 	OSSharedPtr<IOMemoryDescriptor> mem;  in getIOMemoryDescriptor()  local
485 	mem = reserved->fCopyMD;  in getIOMemoryDescriptor()
486 	if (!mem) {  in getIOMemoryDescriptor()
487 		mem = fMemory;  in getIOMemoryDescriptor()
490 	return mem.get();  in getIOMemoryDescriptor()