Find node in offset space
struct drm_vma_offset_node * drm_vma_offset_lookup(struct drm_vma_offset_manager * mgr, unsigned long start, unsigned long pages);
mgr
Manager object
start
Start address for object (page-based)
pages
Size of object (page-based)
Find a node given a start address and object size. This returns the _best_ match for the given node. That is, start may point somewhere into a valid region and the given node will be returned, as long as the node spans the whole requested area (given the size in number of pages as pages).
Returns NULL if no suitable node can be found. Otherwise, the best match is returned. It's the caller's responsibility to make sure the node doesn't get destroyed before the caller can access it.
Jesse Barnes <[email protected]>
Intel Corporation,
Initial version
Laurent Pinchart <[email protected]>
Ideas on board SPRL,
Driver internals
Daniel Vetter <[email protected]>
Intel Corporation,
Contributions all over the place