drm/amdgpu: Enable light SBR for SMU on passthrough and XGMI configuration

SMU introduce the new interface to enable light Secondary Bus Reset mode, driver
enable it on passthrough + XGMI configuration

Signed-off-by: shaoyunl <shaoyun.liu@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index a7cd238654ebd26e8a0f83bb9a1e90e8188c222e..056314ac361c2601969fb40e2c13b2209b254102 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3615,6 +3615,10 @@ fence_driver_init:
        if (amdgpu_device_cache_pci_state(adev->pdev))
                pci_restore_state(pdev);
 
+       /* Enable lightSBR on SMU in passthrough + xgmi configuration */
+       if (amdgpu_passthrough(adev) && adev->gmc.xgmi.num_physical_nodes > 1)
+               smu_set_light_sbr(&adev->smu, true);
+
        if (adev->gmc.xgmi.pending_reset)
                queue_delayed_work(system_wq, &mgpu_info.delayed_reset_work,
                                   msecs_to_jiffies(AMDGPU_RESUME_MS));