SYNOPSIS

int drm_gem_mmap(struct file * filp, struct vm_area_struct * vma);

ARGUMENTS

filp

DRM file pointer

vma

VMA for the area to be mapped

DESCRIPTION

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.

AUTHORS

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

Lukas Wunner <[email protected]>

vga_switcheroo documentation

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