SYNOPSIS

struct drm_gem_object * drm_gem_cma_prime_import_sg_table(struct drm_device * dev, struct dma_buf_attachment * attach, struct sg_table * sgt);

ARGUMENTS

dev

device to import into

attach

DMA-BUF attachment

sgt

scatter/gather table of pinned pages

DESCRIPTION

This function imports a scatter/gather table exported via DMA-BUF by another driver. Imported buffers must be physically contiguous in memory (i.e. the scatter/gather table must contain a single entry). Drivers that use the CMA helpers should set this as their DRM driver's ->gem_prime_import_sg_table callback.

RETURNS

A pointer to a newly created GEM object or an ERR_PTR-encoded negative error code on failure.

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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