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authorRobin Murphy <robin.murphy@arm.com>2016-11-14 15:16:26 +0300
committerJoerg Roedel <jroedel@suse.de>2016-11-14 18:58:36 +0300
commit51f8cc9e818a9e6df376db7aeb5822d43e58cfb3 (patch)
treee894f2534f0f8fc079d82cf410aba8d92d280e9c /include/linux/dma-iommu.h
parentbc33b0ca11e3df467777a4fa7639ba488c9d4911 (diff)
downloadlinux-51f8cc9e818a9e6df376db7aeb5822d43e58cfb3.tar.xz
iommu/dma: Implement dma_{map,unmap}_resource()
With the new dma_{map,unmap}_resource() functions added to the DMA API for the benefit of cases like slave DMA, add suitable implementations to the arsenal of our generic layer. Since cache maintenance should not be a concern, these can both be standalone callback implementations without the need for arch code wrappers. CC: Joerg Roedel <joro@8bytes.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/dma-iommu.h')
-rw-r--r--include/linux/dma-iommu.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h
index 32c589062bd9..7f7e9a7e3839 100644
--- a/include/linux/dma-iommu.h
+++ b/include/linux/dma-iommu.h
@@ -61,6 +61,10 @@ void iommu_dma_unmap_page(struct device *dev, dma_addr_t handle, size_t size,
enum dma_data_direction dir, unsigned long attrs);
void iommu_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction dir, unsigned long attrs);
+dma_addr_t iommu_dma_map_resource(struct device *dev, phys_addr_t phys,
+ size_t size, enum dma_data_direction dir, unsigned long attrs);
+void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir, unsigned long attrs);
int iommu_dma_supported(struct device *dev, u64 mask);
int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr);