/**
* drm_gem_unmap_dma_buf - unmap_dma_buf implementation for GEM
+ * @attach: attachment to unmap buffer from
+ * @sgt: scatterlist info of the buffer to unmap
+ * @dir: direction of DMA transfer
*
* Not implemented. The unmap is done at drm_gem_map_detach(). This can be
* used as the &dma_buf_ops.unmap_dma_buf callback.
/**
* drm_gem_dmabuf_kmap_atomic - map_atomic implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.map_atomic callback.
*/
/**
* drm_gem_dmabuf_kunmap_atomic - unmap_atomic implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.unmap_atomic callback.
*/
/**
* drm_gem_dmabuf_kmap - map implementation for GEM
+ * @dma_buf: buffer to be mapped
+ * @page_num: page number within the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.map callback.
*/
/**
* drm_gem_dmabuf_kunmap - unmap implementation for GEM
+ * @dma_buf: buffer to be unmapped
+ * @page_num: page number within the buffer
+ * @addr: virtual address of the buffer
*
* Not implemented. This can be used as the &dma_buf_ops.unmap callback.
*/