From f2d6657111ed5c065b1f934b548a279205c3d370 Mon Sep 17 00:00:00 2001 From: Le Ma Date: Tue, 11 Sep 2018 13:11:28 +0800 Subject: [PATCH] drm/amdgpu: skip pasid mapping for second mmhub on Arcturus There's no LUT register for second mmhub to convert pasid since it has no ATC. Signed-off-by: Le Ma Reviewed-by: Feifei Xu Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 75801178efa1..a05040249a50 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -492,6 +492,10 @@ static void gmc_v9_0_emit_pasid_mapping(struct amdgpu_ring *ring, unsigned vmid, struct amdgpu_device *adev = ring->adev; uint32_t reg; + /* Do nothing because there's no lut register for mmhub1. */ + if (ring->funcs->vmhub == AMDGPU_MMHUB_1) + return; + if (ring->funcs->vmhub == AMDGPU_GFXHUB_0) reg = SOC15_REG_OFFSET(OSSSYS, 0, mmIH_VMID_0_LUT) + vmid; else -- 2.30.2