[PATCH 15/18] drm/nouveau/tegra: Clean up IOMMU workaround
From: Robin Murphy <robin.murphy@arm.com>
Date: 2020-08-20 15:11:22
Also in:
dri-devel, linux-arm-msm, linux-iommu, linux-media, linux-mediatek, linux-samsung-soc, linux-tegra, lkml
Subsystem:
drm driver for nvidia geforce/quadro gpus, drm drivers, drm drivers and misc gpu patches, the rest · Maintainers:
Lyude Paul, Danilo Krummrich, David Airlie, Simona Vetter, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann, Linus Torvalds
Now that arch/arm is wired up for default domains and iommu-dma, we no longer need to work around the arch-private mapping. Signed-off-by: Robin Murphy <robin.murphy@arm.com> --- drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c | 13 ------------- 1 file changed, 13 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
index d0d52c1d4aee..410ee1f83e0b 100644
--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c@@ -23,10 +23,6 @@ #ifdef CONFIG_NOUVEAU_PLATFORM_DRIVER #include "priv.h" -#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) -#include <asm/dma-iommu.h> -#endif - static int nvkm_device_tegra_power_up(struct nvkm_device_tegra *tdev) {
@@ -109,15 +105,6 @@ nvkm_device_tegra_probe_iommu(struct nvkm_device_tegra *tdev) unsigned long pgsize_bitmap; int ret; -#if IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU) - if (dev->archdata.mapping) { - struct dma_iommu_mapping *mapping = to_dma_iommu_mapping(dev); - - arm_iommu_detach_device(dev); - arm_iommu_release_mapping(mapping); - } -#endif - if (!tdev->func->iommu_bit) return;
--
2.28.0.dirty
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