diff options
| author | Tom Murphy <murphyt7@tcd.ie> | 2020-11-24 11:20:52 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-11-25 15:03:48 +0300 |
| commit | 230309d08b871e439f8618db3610f2cc9b5f7c72 (patch) | |
| tree | f3306c2917e7854c44bc7b5c34aad84a487b3448 /include/linux/dma-iommu.h | |
| parent | 2a2b8eaa5b25668a6f717f94b55f4e3aaf87629d (diff) | |
| download | linux-230309d08b871e439f8618db3610f2cc9b5f7c72.tar.xz | |
iommu: Add iommu_dma_free_cpu_cached_iovas()
Add a iommu_dma_free_cpu_cached_iovas function to allow drivers which
use the dma-iommu ops to free cached cpu iovas.
Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Tested-by: Logan Gunthorpe <logang@deltatee.com>
Link: https://lore.kernel.org/r/20201124082057.2614359-3-baolu.lu@linux.intel.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'include/linux/dma-iommu.h')
| -rw-r--r-- | include/linux/dma-iommu.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h index 2112f21f73d8..706b68d1359b 100644 --- a/include/linux/dma-iommu.h +++ b/include/linux/dma-iommu.h @@ -37,6 +37,9 @@ void iommu_dma_compose_msi_msg(struct msi_desc *desc, void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list); +void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain); + #else /* CONFIG_IOMMU_DMA */ struct iommu_domain; @@ -78,5 +81,10 @@ static inline void iommu_dma_get_resv_regions(struct device *dev, struct list_he { } +static inline void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain) +{ +} + #endif /* CONFIG_IOMMU_DMA */ #endif /* __DMA_IOMMU_H */ |