Displaying 3 results from an estimated 3 matches for "cc63a25bd088".
2018 Apr 25
0
[PATCH v2 3/5] ARM: dma-mapping: Implement arch_iommu_detach_device()
...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_iommu_mapping *m...
2018 Apr 25
0
[PATCH v2 5/5] ARM: Unconditionally enable ARM_DMA_USE_IOMMU
...#endif
@@ -31,10 +29,6 @@ struct pdev_archdata {
#endif
};
-#ifdef CONFIG_ARM_DMA_USE_IOMMU
#define to_dma_iommu_mapping(dev) ((dev)->archdata.mapping)
-#else
-#define to_dma_iommu_mapping(dev) NULL
-#endif
#endif
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index cc63a25bd088..f6c28ed5651a 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1174,8 +1174,6 @@ static int __init dma_debug_do_init(void)
}
core_initcall(dma_debug_do_init);
-#ifdef CONFIG_ARM_DMA_USE_IOMMU
-
static int __dma_info_to_prot(enum dma_data_direction dir, unsigned long a...
2018 Apr 25
11
[PATCH v2 1/5] drm/nouveau: tegra: Detach from ARM DMA/IOMMU mapping
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