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 <le.ma@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 7580117..a050402 100644 (file)
--- 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