[PATCH 1/1] drm/amdgpu: flush gpu tlb after a gart allocation

[Nirmoy Das]

Flush gpu tlb in amdgpu_ttm_alloc_gart(). Also
don't flush gpu tlb after recovering each BO.

Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c | 2 --
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c  | 5 ++++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
index 5562b5c90c03..68d41063e120 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gart.c
@@ -329,8 +329,6 @@ int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
 
 	mb();
 	amdgpu_asic_flush_hdp(adev, NULL);
-	for (i = 0; i < adev->num_vmhubs; i++)
-		amdgpu_gmc_flush_gpu_tlb(adev, 0, i, 0);
 	return 0;
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index c0aef327292a..e68b5dab84a4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -977,7 +977,7 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 	struct ttm_placement placement;
 	struct ttm_place placements;
 	uint64_t addr, flags;
-	int r;
+	int r, i;
 
 	if (bo->mem.start != AMDGPU_BO_INVALID_OFFSET)
 		return 0;
@@ -1014,6 +1014,9 @@ int amdgpu_ttm_alloc_gart(struct ttm_buffer_object *bo)
 			return r;
 		}
 
+		for (i = 0; i < adev->num_vmhubs; i++)
+			amdgpu_gmc_flush_gpu_tlb(adev, 0, i, 0);
+
 		ttm_resource_free(bo, &bo->mem);
 		bo->mem = tmp;
 	}
-- 
2.31.1