diff options
Diffstat (limited to 'arch/arm64/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm64/mm/dma-mapping.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 61bc36ddbb1e..02d0236a3873 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -953,6 +953,19 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, } } +void arch_teardown_dma_ops(struct device *dev) +{ + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); + + if (domain) { + iommu_detach_device(domain, dev); + if (domain->type & __IOMMU_DOMAIN_FAKE_DEFAULT) + iommu_domain_free(domain); + } + + dev->archdata.dma_ops = NULL; +} + #else static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, @@ -961,3 +974,12 @@ static void __iommu_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, #endif /* CONFIG_IOMMU_DMA */ +void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, + struct iommu_ops *iommu, bool coherent) +{ + if (!acpi_disabled && !dev->archdata.dma_ops) + dev->archdata.dma_ops = dma_ops; + + dev->archdata.dma_coherent = coherent; + __iommu_setup_dma_ops(dev, dma_base, size, iommu); +} |