From 876945dbf6497c7539ef958fee7ade970fbbe17a Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Thu, 1 Oct 2015 20:14:00 +0100 Subject: arm64: Hook up IOMMU dma_ops With iommu_dma_ops in place, hook them up to the configuration code, so IOMMU-fronted devices will get them automatically. Acked-by: Catalin Marinas Signed-off-by: Robin Murphy Signed-off-by: Joerg Roedel --- arch/arm64/mm/dma-mapping.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'arch/arm64/mm') diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 322404193044..6320361d8d4c 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -960,6 +960,19 @@ 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, @@ -968,3 +981,12 @@ 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); +} -- cgit v1.2.3