iokit/Kernel/IOMemoryDescriptor.cpp

2559     IOMemoryMap *  mapping = (IOMemoryMap *) *__address;
2560     mach_vm_size_t offset  = mapping->fOffset + __offset;
2561     mach_vm_size_t length  = mapping->fLength;
2578     // mapping source == dest? (could be much better)
2580      && (mapping->fAddressMap == get_task_map(_task)) && (options & kIOMapAnywhere)
2584 	mapping->fAddress = range0Addr;
2585 	mapping->fOptions |= kIOMapStatic;
2641 		address = trunc_page_64(mapping->fAddress);
2643 		if ((options & kIOMapAnywhere) || ((mapping->fAddress - address) == pageOffset))
2645 		    vm_map_t map = mapping->fAddressMap;
2699                             mach_vm_deallocate(mapping->fAddressMap, address, round_page_64(length + pageOffset));
2704 			mapping->fAddress = address + pageOffset;
2706 			mapping->fAddress = NULL;
2735 			    mapping->fOptions |= kIOMapInhibitCache;
2737 			    mapping->fOptions |= kIOMapWriteCombineCache;
2740 			mapping->fOptions |= kIOMapWriteThruCache;
2742 			mapping->fOptions |= kIOMapCopybackCache;
3055     IOMemoryMap *  mapping = (IOMemoryMap *) *__address;
3056     mach_vm_size_t offset  = mapping->fOffset + __offset;
3057     mach_vm_size_t length  = mapping->fLength;
3087 	    size = round_page(mapping->fLength + pageOffset);
3101 	    err = upl_transpose(redirUPL2, mapping->fRedirUPL);
3123 		_memEntry = mapping->fMemory->_memEntry;
3124 		mapping->fMemory->_memEntry = me;
3127 		err = handleFault( pager, mapping->fAddressMap, mapping->fAddress, offset, length, options );
3135 		address = trunc_page_64(mapping->fAddress);
3136 		if( (mapping->fAddress - address) != pageOffset)
3143             vm_map_t map = mapping->fAddressMap;
3152 		err = handleFault( pager, mapping->fAddressMap, address, offset, length, options );
3154 		    doUnmap( mapping->fAddressMap, (IOVirtualAddress) mapping, 0 );
3159 	    IOLog("mapping(%x) desc %p @ %qx, map %p, address %qx, offset %qx, length %qx\n",
3160 		  err, this, (uint64_t)sourceAddr, mapping, address, offset, length);
3164 		mapping->fAddress = address + pageOffset;
3166 		mapping->fAddress = NULL;
3334     IOMemoryMap *	mapping = 0;
3346 	    while( (mapping = (IOMemoryMap *) iter->getNextObject()))
3347 		mapping->redirect( safeTask, doRedirect );
3467 // always have 2 references on a mapping.  When either of these mappings
3716     IOMemoryMap * mapping;
3721     mapping = new IOMemoryMap;
3723     if( mapping
3724      && !mapping->init( intoTask, atAddress,
3726 	mapping->release();
3727 	mapping = 0;
3730     if (mapping)
3731 	result = makeMapping(this, intoTask, (IOVirtualAddress) mapping, options | kIOMap64Bit, 0, 0);
3835     IOMemoryMap *  mapping = (IOMemoryMap *) __address;
3836     mach_vm_size_t offset  = mapping->fOffset + __offset;
3837     mach_vm_size_t length  = mapping->fLength;
3839     mapping->fOffset = offset;
3847 	    result = mapping;
3848 	    addMapping(mapping);
3849 	    mapping->setMemoryDescriptor(this, 0);
3872 		mapping->fOffset = offset;
3877 	    // look for a compatible existing mapping
3883 		    if ((result = lookMapping->copyCompatible(mapping)))
3894 	        if (result != mapping)
3896                     mapping->release();
3897                     mapping = NULL;
3909 	kr = mapDesc->doMap( 0, (IOVirtualAddress *) &mapping, options, 0, 0 );
3912 	    result = mapping;
3918 	    mapping->release();
3919 	    mapping = NULL;
3933 	IOMemoryMap * mapping )
3935     if( mapping)
3940 	    _mappings->setObject( mapping );
3945 	IOMemoryMap * mapping )
3948         _mappings->removeObject( mapping);