drm_gem_cma_prime_import_sg_table
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Name

drm_gem_cma_prime_import_sg_table — produce a CMA GEM object from another driver's scatter/gather table of pinned pages

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.

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