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[PATCHv6 1/8] dma-mapping: add {map,unmap}_resource to dma_map_ops

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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 Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 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 0e4d3a6..8617fa1 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

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[PATCHv6 0/8] dmaengine: rcar-dmac: add iommu support for slave transfers Niklas Söderlund   <niklas.soderlund+renesas@ragnatech.se> - 2016-05-09 18:50 +0200
  [PATCHv6 4/8] arm: dma-mapping: add {map,unmap}_resource for iommu ops Niklas Söderlund   <niklas.soderlund+renesas@ragnatech.se> - 2016-05-09 18:50 +0200
  [PATCHv6 8/8] ARM: dts: r8a7791: add iommus to dmac0 and dmac1 Niklas Söderlund   <niklas.soderlund+renesas@ragnatech.se> - 2016-05-09 18:50 +0200
  [PATCHv6 1/8] dma-mapping: add {map,unmap}_resource to dma_map_ops Niklas Söderlund   <niklas.soderlund+renesas@ragnatech.se> - 2016-05-09 19:00 +0200

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