drivers/dma-buf/dma-buf.c

445 	enum dma_data_direction direction;
460 			direction = DMA_FROM_DEVICE;
463 			direction = DMA_TO_DEVICE;
466 			direction = DMA_BIDIRECTIONAL;
473 			ret = dma_buf_end_cpu_access(dmabuf, direction);
475 			ret = dma_buf_begin_cpu_access(dmabuf, direction);
778 				       enum dma_data_direction direction)
783 	sg_table = attach->dmabuf->ops->map_dma_buf(attach, direction);
793 							   direction);
984 			    enum dma_data_direction direction)
989 	attach->dmabuf->ops->unmap_dma_buf(attach, sg_table, direction);
1082  * @direction:	[in]	direction of DMA transfer
1099 					enum dma_data_direction direction)
1116 		if (attach->dir != direction &&
1131 	sg_table = __map_dma_buf(attach, direction);
1141 		attach->dir = direction;
1170  * @direction:	[in]	direction of DMA transfer
1176 				enum dma_data_direction direction)
1186 	sg_table = dma_buf_map_attachment(attach, direction);
1199  * @direction:  [in]    direction of DMA transfer
1205 				enum dma_data_direction direction)
1217 	__unmap_dma_buf(attach, sg_table, direction);
1231  * @direction:	[in]	direction of DMA transfer
1237 				       enum dma_data_direction direction)
1245 	dma_buf_unmap_attachment(attach, sg_table, direction);
1356 				      enum dma_data_direction direction)
1358 	bool write = (direction == DMA_BIDIRECTIONAL ||
1359 		      direction == DMA_TO_DEVICE);
1376  * specified access direction.
1378  * @direction:	[in]	direction of access.
1392 			     enum dma_data_direction direction)
1402 		ret = dmabuf->ops->begin_cpu_access(dmabuf, direction);
1409 		ret = __dma_buf_begin_cpu_access(dmabuf, direction);
1419  * specified access direction.
1421  * @direction:	[in]	direction of access.
1428 			   enum dma_data_direction direction)
1437 		ret = dmabuf->ops->end_cpu_access(dmabuf, direction);