drm_gem_cma_dumb_map_offset
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Name

drm_gem_cma_dumb_map_offset — return the fake mmap offset for a CMA GEM object

Synopsis

int drm_gem_cma_dumb_map_offset (struct drm_file * file_priv,
 struct drm_device * drm,
 u32 handle,
 u64 * offset);
 

Arguments

file_priv

DRM file-private structure containing the GEM object

drm

DRM device

handle

GEM object handle

offset

return location for the fake mmap offset

Description

This function look up an object by its handle and returns the fake mmap offset associated with it. Drivers using the CMA helpers should set this as their DRM driver's ->dumb_map_offset callback.

Returns

0 on success or a negative error code on failure.

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