drm_gem_mmap — memory map routine for GEM objects
int drm_gem_mmap ( | struct file * filp, |
struct vm_area_struct * vma); |
If a driver supports GEM object mapping, mmap calls on the DRM file descriptor will end up here.
Look up the GEM object based on the offset passed in (vma->vm_pgoff will
contain the fake offset we created when the GTT map ioctl was called on
the object) and map it with a call to drm_gem_mmap_obj.
If the caller is not granted access to the buffer object, the mmap will fail with EACCES. Please see the vma manager for more information.