search for: 8c398fedbbb6

...mmu.c @@ -242,6 +242,10 @@ void arch_teardown_dma_ops(struct device *dev) { } +void arch_iommu_detach_device(struct device *dev) +{ +} + #define PREALLOC_DMA_DEBUG_ENTRIES 4096 static int __init dma_debug_do_init(void) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 8c398fedbbb6..1957938d8c9c 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -2366,6 +2366,21 @@ static void arm_teardown_iommu_dma_ops(struct device *dev) arm_iommu_release_mapping(mapping); } +void arch_iommu_detach_device(struct device *dev) +{ + struct dma_iommu_mapping *mapping...

...mmu.c @@ -242,6 +242,10 @@ void arch_teardown_dma_ops(struct device *dev) { } +void arch_iommu_detach_device(struct device *dev) +{ +} + #define PREALLOC_DMA_DEBUG_ENTRIES 4096 static int __init dma_debug_do_init(void) diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 8c398fedbbb6..cc63a25bd088 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -2423,3 +2423,20 @@ void arch_teardown_dma_ops(struct device *dev) arm_teardown_iommu_dma_ops(dev); } + +void arch_iommu_detach_device(struct device *dev) +{ +#ifdef CONFIG_ARM_DMA_USE_IOMMU + struct dma_io...

From: Thierry Reding <treding at nvidia.com> Depending on the kernel configuration, early ARM architecture setup code may have attached the GPU to a DMA/IOMMU mapping that transparently uses the IOMMU to back the DMA API. Tegra requires special handling for IOMMU backed buffers (a special bit in the GPU's MMU page tables indicates the memory path to take: via the SMMU or directly to the

From: Thierry Reding <treding at nvidia.com> Depending on the kernel configuration, early ARM architecture setup code may have attached the GPU to a DMA/IOMMU mapping that transparently uses the IOMMU to back the DMA API. Tegra requires special handling for IOMMU backed buffers (a special bit in the GPU's MMU page tables indicates the memory path to take: via the SMMU or directly to the