diff options
| author | Niklas Söderlund <[email protected]> | 2016-08-10 13:22:14 +0200 |
|---|---|---|
| committer | Vinod Koul <[email protected]> | 2016-09-26 22:16:41 +0530 |
| commit | ba409b31b3d37b52dda4eefcde04f5837c7ee4aa (patch) | |
| tree | d6cd2c4d47c83fc786a170c809def0f3596efbab | |
| parent | 29b4817d4018df78086157ea3a55c1d9424a7cfc (diff) | |
dma-mapping: add {map,unmap}_resource to dma_map_ops
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 <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Signed-off-by: Vinod Koul <[email protected]>
| -rw-r--r-- | include/linux/dma-mapping.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 66533e18276c..673b7be85f7a 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -95,6 +95,12 @@ struct dma_map_ops { struct scatterlist *sg, int nents, enum dma_data_direction dir, unsigned long attrs); + dma_addr_t (*map_resource)(struct device *dev, phys_addr_t phys_addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs); + void (*unmap_resource)(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction dir, + unsigned long attrs); void (*sync_single_for_cpu)(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction dir); |