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| 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 /drivers/iommu | |
| 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 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 9c827a4d2207..de521e22bafb 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -49,6 +49,15 @@ struct iommu_dma_cookie { struct iommu_domain *fq_domain; }; +void iommu_dma_free_cpu_cached_iovas(unsigned int cpu, + struct iommu_domain *domain) +{ + struct iommu_dma_cookie *cookie = domain->iova_cookie; + struct iova_domain *iovad = &cookie->iovad; + + free_cpu_cached_iovas(cpu, iovad); +} + static void iommu_dma_entry_dtor(unsigned long data) { struct page *freelist = (struct page *)data; |