iokit/Kernel/IOMemoryDescriptor.cpp

191     IOMemoryDescriptorReserved * ref = (IOMemoryDescriptorReserved *) device_handle;
195     memDesc = ref->dp.memory;
213     IOMemoryDescriptorReserved * ref = (IOMemoryDescriptorReserved *) device_handle;
215     IODelete( ref, IOMemoryDescriptorReserved, 1 );
936             // memEntry holds a ref on the device pager which owns reserved
2894     IOMemoryDescriptorMapAllocRef * ref = (IOMemoryDescriptorMapAllocRef *)_ref;
2898         if( ref->sharedMem)
2901                             | ((ref->options & kIOMapReadOnly) ? 0 : VM_PROT_WRITE);
2904 	    if (kIOMapDefaultCache != (ref->options & kIOMapCacheMask))
2909             switch (ref->options & kIOMapCacheMask)
2940                                             memEntryCacheMode, NULL, ref->sharedMem );
2945                             &ref->mapped,
2946                             ref->size, 0 /* mask */,
2947                             (( ref->options & kIOMapAnywhere ) ? VM_FLAGS_ANYWHERE : VM_FLAGS_FIXED)
2949                             ref->sharedMem, ref->sourceOffset,
2956                 ref->mapped = 0;
2959             ref->map = map;
2963             err = mach_vm_allocate(map, &ref->mapped, ref->size,
2964                             ((ref->options & kIOMapAnywhere) ? VM_FLAGS_ANYWHERE : VM_FLAGS_FIXED)
2967                 ref->mapped = 0;
2970             ref->map = map;
2972             err = vm_inherit(map, ref->mapped, ref->size, VM_INHERIT_NONE);
2987     IOMemoryDescriptorMapAllocRef ref;
2989     ref.map          = *map;
2990     ref.sharedMem    = entry;
2991     ref.sourceOffset = trunc_page_64(offset);
2992     ref.options	     = options;
2993     ref.size         = length;
2997 	ref.mapped = 0;
2999 	ref.mapped = *address;
3001     if( ref.sharedMem && (ref.map == kernel_map) && pageable)
3002 	err = IOIteratePageableMaps( ref.size, &IOMemoryDescriptorMapAlloc, &ref );
3004 	err = IOMemoryDescriptorMapAlloc( ref.map, &ref );
3006     *address = ref.mapped;
3007     *map     = ref.map;
3019     IOMemoryDescriptorMapAllocRef ref;
3021     ref.map          = *map;
3022     ref.sharedMem    = NULL;
3023     ref.sourceOffset = trunc_page_64(offset);
3024     ref.options	     = options;
3025     ref.size         = length;
3029 	ref.mapped = 0;
3031 	ref.mapped = *address;
3033     if (ref.map == kernel_map)
3034 	err = IOIteratePageableMaps(ref.size, &IOMemoryDescriptorMapAlloc, &ref);
3036 	err = IOMemoryDescriptorMapAlloc(ref.map, &ref);
3038     *address = ref.mapped;
3039     *map     = ref.map;