From e3d5ef97466f8dd7f7ad37db0fb4637cf1dae2cf Mon Sep 17 00:00:00 2001
From: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Date: Tue, 24 Aug 2021 16:15:48 -0400
Subject: drm/amdgpu: drm/amdgpu: Handle IOMMU enabled case
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Git-commit: 894c6890a23c2a91493c845d05d6ffbb148efa6d
Patch-mainline: v5.16-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
Handle all DMA IOMMU group related dependencies before the
group is removed and we try to access it after free.
v2:
Move the actul handling function to TTM
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 1fefa41fb354..f611b144b2c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3876,6 +3876,8 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev)
amdgpu_device_ip_fini_early(adev);
+ ttm_device_clear_dma_mappings(&adev->mman.bdev);
+
amdgpu_gart_dummy_page_fini(adev);
amdgpu_device_unmap_mmio(adev);
--
2.38.1