From mboxrd@z Thu Jan 1 00:00:00 1970 From: niklas.soderlund+renesas@ragnatech.se (=?UTF-8?q?Niklas=20S=C3=B6derlund?=) Date: Tue, 7 Jun 2016 09:54:08 +0200 Subject: [PATCHv8 1/6] dma-mapping: add {map,unmap}_resource to dma_map_ops In-Reply-To: <1465286053-27258-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> References: <1465286053-27258-1-git-send-email-niklas.soderlund+renesas@ragnatech.se> Message-ID: <1465286053-27258-2-git-send-email-niklas.soderlund+renesas@ragnatech.se> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Add methods to handle mapping of device resources from a physical address. This is needed for example to be able to map MMIO FIFO registers to a IOMMU. Signed-off-by: Niklas S?derlund Reviewed-by: Laurent Pinchart --- include/linux/dma-mapping.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index c980a92..a11ff9d 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -49,6 +49,12 @@ struct dma_map_ops { struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs); + dma_addr_t (*map_resource)(struct device *dev, phys_addr_t phys_addr, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs); + void (*unmap_resource)(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs); void (*sync_single_for_cpu)(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir); -- 2.8.2