iokit/Kernel/IOMemoryDescriptor.cpp

1005     addr64_t physAddr = 0;
1008         physAddr = getPhysicalSegment64( offset, length );
1012     return( (IOPhysicalAddress) physAddr ); // truncated but only page offset is used
3190     addr64_t		physAddr;
3207     physAddr = getPhysicalSegment( sourceOffset, &segLen, kIOMemoryMapperNone );
3208     assert( physAddr );
3209     pageOffset = physAddr - trunc_page_64( physAddr );
3213     physAddr -= pageOffset;
3224         if( physAddr != trunc_page_64( physAddr))
3232                 addressMap, address + pageOffset, physAddr + pageOffset,
3254 			    (ppnum_t)(atop_64(physAddr + page)), page_size);
3287     while (bytes && (physAddr = getPhysicalSegment( sourceOffset, &segLen, kIOMemoryMapperNone )));