iokit/Kernel/IODMACommand.cpp

331     if (target->fNumAddressBits && (target->fNumAddressBits < 64) && (state->fLocalMapperPageAlloc || !target->fMapper))
719 	state->fLocalMapperPageAlloc = 0;
747 		state->fLocalMapperPageAlloc = ptoa_64(fMapper->iovmAllocDMACommand(this, state->fLocalMapperPageCount));
748 		if (!state->fLocalMapperPageAlloc)
770 		    state->fLocalMapperPageAlloc = mapArgs.fAlloc;
803     	if (state->fLocalMapperPageAlloc)
807 		fMapper->iovmFreeDMACommand(this, atop_64(state->fLocalMapperPageAlloc), state->fLocalMapperPageCount);
811 		fMapper->iovmFree(atop_64(state->fLocalMapperPageAlloc), state->fLocalMapperPageCount);
813 	    state->fLocalMapperPageAlloc = 0;
1042 	    if (internalState->fMapContig && internalState->fLocalMapperPageAlloc)
1044 		state->fIOVMAddr = internalState->fLocalMapperPageAlloc + offset;
1221 	&& (target->reserved->fLocalMapperPageAlloc || !target->fMapper))