Displaying 3 results from an estimated 3 matches for "acpi_dma_deconfigure".
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acpi_dma_configure
2018 Apr 25
0
[PATCH v2 2/5] dma-mapping: Introduce dma_iommu_detach_device() API
...files changed, 10 insertions(+)
diff --git a/drivers/base/dma-mapping.c b/drivers/base/dma-mapping.c
index d82566d6e237..18ddf32b10c9 100644
--- a/drivers/base/dma-mapping.c
+++ b/drivers/base/dma-mapping.c
@@ -366,3 +366,11 @@ void dma_deconfigure(struct device *dev)
of_dma_deconfigure(dev);
acpi_dma_deconfigure(dev);
}
+
+void dma_iommu_detach_device(struct device *dev)
+{
+#ifdef arch_iommu_detach_device
+ arch_iommu_detach_device(dev);
+#endif
+}
+EXPORT_SYMBOL(dma_iommu_detach_device);
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index f8ab1c0f589e..732191a2c64e 100644
--- a/...
2018 Apr 25
5
[PATCH 1/4] 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
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