hexagon: implement the sync_sg_for_device DMA operation (f406f222) · Commits · 戴 / test

arch/hexagon/kernel/dma.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -188,6 +188,18 @@ static void hexagon_sync_single_for_device(struct device *dev,
		dma_sync(dma_addr_to_virt(dma_handle), size, dir);
		}

		static void hexagon_sync_sg_for_device(struct device *dev,
		struct scatterlist *sgl, int nents, enum dma_data_direction dir)
		{
		struct scatterlist *sg;
		int i;

		for_each_sg(sgl, sg, nents, i)
		hexagon_sync_single_for_device(dev, sg_dma_address(sg),
		sg->length, dir);
		}


		static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr)
		{
		return dma_addr == HEXAGON_MAPPING_ERROR;
		@@ -199,6 +211,7 @@ const struct dma_map_ops hexagon_dma_ops = {
		.map_sg = hexagon_map_sg,
		.map_page = hexagon_map_page,
		.sync_single_for_device = hexagon_sync_single_for_device,
		.sync_sg_for_device = hexagon_sync_sg_for_device,
		.mapping_error = hexagon_mapping_error,
		};