drm/amdgpu: Add mem sync flag for IB allocated by SA

[ Upstream commit 5c88e3b86a88f14efa0a3ddd28641c6ff49fb9c4 ]

The buffer of SA bo will be used by many cases. So it's better
to invalidate the cache of indirect buffer allocated by SA before
commit the IB.

Signed-off-by: Jinzhou Su <Jinzhou.Su@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 024d0a563a652be59bc054b9572e55af2e7c76c1..f41764cee6906d21e53c5d08deb9f45369a0e45c 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -77,6 +77,8 @@ int amdgpu_ib_get(struct amdgpu_device *adev, struct amdgpu_vm *vm,
                }
 
                ib->ptr = amdgpu_sa_bo_cpu_addr(ib->sa_bo);
+               /* flush the cache before commit the IB */
+               ib->flags = AMDGPU_IB_FLAG_EMIT_MEM_SYNC;
 
                if (!vm)
                        ib->gpu_addr = amdgpu_sa_bo_gpu_addr(ib->sa_bo);