| Message ID | 1455065878-11906-3-git-send-email-niklas.soderlund+renesas@ragnatech.se |
|---|---|
| State | New |
| Headers | show |
Hello. On 2/10/2016 3:57 AM, 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 ^^^ not needed > registers to a IOMMU. > > Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> [...] MBR, Sergei
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 <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> > --- > 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);
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);
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 <niklas.soderlund+renesas@ragnatech.se> --- include/linux/dma-mapping.h | 6 ++++++ 1 file changed, 6 insertions(+)