[PATCH v3 2/8] dma-mapping: add {map, unmap}_resource to dma_map_ops
From: laurent.pinchart@ideasonboard.com (Laurent Pinchart)
Date: 2016-02-11 00:03:19
Also in:
linux-arch, linux-iommu, linux-renesas-soc, lkml
Hi Niklas, Thank you for the patch. On Wednesday 10 February 2016 01:57:52 Niklas S?derlund wrote:
Add methods to handle mapping of device resources from a physical address. This is needed for example to map be able to map MMIO FIFO registers to a IOMMU. Signed-off-by: Niklas S?derlund <niklas.soderlund+renesas@ragnatech.se>
Apart from the typo in the commit message that Sergei already pointed out, Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
quoted hunk ↗ jump to hunk
--- 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 75857cd..e3aba4e 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);
-- Regards, Laurent Pinchart