540  * Optional pinning of buffers is handled at dma-buf attach and detach time in
568  * drm_gem_map_attach - dma_buf attach implementation for GEM
569  * @dma_buf: buffer to attach device to
570  * @attach: buffer attachment data
573  * used as the &dma_buf_ops.attach callback. Must be used together with
579 		       struct dma_buf_attachment *attach)  in drm_gem_map_attach()  argument
593  * @attach: attachment to be detached
600 			struct dma_buf_attachment *attach)  in drm_gem_map_detach()  argument
610  * @attach: attachment whose scatterlist is to be returned
620 struct sg_table *drm_gem_map_dma_buf(struct dma_buf_attachment *attach,  in drm_gem_map_dma_buf()  argument
623 	struct drm_gem_object *obj = attach->dmabuf->priv;  in drm_gem_map_dma_buf()
637 	ret = dma_map_sgtable(attach->dev, sgt, dir,  in drm_gem_map_dma_buf()
651  * @attach: attachment to unmap buffer from
657 void drm_gem_unmap_dma_buf(struct dma_buf_attachment *attach,  in drm_gem_unmap_dma_buf()  argument
664 	dma_unmap_sgtable(attach->dev, sgt, dir, DMA_ATTR_SKIP_CPU_SYNC);  in drm_gem_unmap_dma_buf()
783 	.attach = drm_gem_map_attach,
893  * @attach_dev: struct device to dma_buf attach
907 	struct dma_buf_attachment *attach;  in drm_gem_prime_import_dev()  local
927 	attach = dma_buf_attach(dma_buf, attach_dev);  in drm_gem_prime_import_dev()
928 	if (IS_ERR(attach))  in drm_gem_prime_import_dev()
929 		return ERR_CAST(attach);  in drm_gem_prime_import_dev()
933 	sgt = dma_buf_map_attachment_unlocked(attach, DMA_BIDIRECTIONAL);  in drm_gem_prime_import_dev()
939 	obj = dev->driver->gem_prime_import_sg_table(dev, attach, sgt);  in drm_gem_prime_import_dev()
945 	obj->import_attach = attach;  in drm_gem_prime_import_dev()
951 	dma_buf_unmap_attachment_unlocked(attach, sgt, DMA_BIDIRECTIONAL);  in drm_gem_prime_import_dev()
953 	dma_buf_detach(dma_buf, attach);  in drm_gem_prime_import_dev()
1043 	struct dma_buf_attachment *attach;  in drm_prime_gem_destroy()  local
1046 	attach = obj->import_attach;  in drm_prime_gem_destroy()
1048 		dma_buf_unmap_attachment_unlocked(attach, sg, DMA_BIDIRECTIONAL);  in drm_prime_gem_destroy()
1049 	dma_buf = attach->dmabuf;  in drm_prime_gem_destroy()
1050 	dma_buf_detach(attach->dmabuf, attach);  in drm_prime_gem_destroy()