iokit/Kernel/IODMACommand.cpp

473 	    state->fCopyPageCount = atop_64(round_page(state->fPreparedLength));
511 				    fMDSummary.fDirection, state->fPreparedLength, mask);
553 						    state->fPreparedLength);
557 						    state->fPreparedLength);
559 		    ret = (bytes == state->fPreparedLength) ? kIOReturnSuccess : kIOReturnUnderrun;
702 	  || (state->fPreparedLength != length))
708 	state->fPreparedLength = length;
746 			state->fPreparedLength + ((state->fPreparedOffset + fMDSummary.fPageAlign) & page_mask)));
764 		mapArgs.fLength = state->fPreparedLength;
823 	    poMD->performOperation(kIOMemoryIncoherentIOFlush, state->fPreparedOffset, state->fPreparedLength);
840 	*length = state->fPreparedLength;
950     if (offset >= state->fPreparedLength)
952     length = min(length, state->fPreparedLength - offset);
1006     UInt64 memLength = internalState->fPreparedOffset + internalState->fPreparedLength;