SYNOPSIS

void * drm_gem_cma_prime_vmap(struct drm_gem_object * obj);

ARGUMENTS

obj

GEM object

DESCRIPTION

This function maps a buffer exported via DRM PRIME into the kernel's virtual address space. Since the CMA buffers are already mapped into the kernel virtual address space this simply returns the cached virtual address. Drivers using the CMA helpers should set this as their DRM driver's ->gem_prime_vmap callback.

RETURNS

The kernel virtual address of the CMA GEM object's backing store.

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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