Re: [PATCH v3 2/8] dma-mapping: add {map, unmap}_resource to dma_map_ops

[Laurent Pinchart]

Hi Niklas,

Thank you for the patch.

On Wednesday 10 February 2016 01:57:52 Niklas Söderlund 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 Söderlund 

Apart from the typo in the commit message that Sergei already pointed out,

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 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

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[PATCH v3 2/8] dma-mapping: add {map,unmap}_resource to dma_map_ops

[Niklas Söderlund]

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 Söderlund 
---
 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);
-- 
2.7.1

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