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drm/amd/pm: disable cstate feature for gpu reset scenario

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Suggested by PMFW team and same as what did for gfxoff feature.
This can address some Mode1Reset failures observed on SMU13.0.0.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan
2022-09-29 10:50:44 +08:00
committed by Alex Deucher
parent ba2f09960e
commit 3059cd8c5f
3 changed files with 25 additions and 0 deletions
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8
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -2928,6 +2928,14 @@ static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
/*
* Per PMFW team's suggestion, driver needs to handle gfxoff
* and df cstate features disablement for gpu reset(e.g. Mode1Reset)
* scenario. Add the missing df cstate disablement here.
*/
if (amdgpu_dpm_set_df_cstate(adev, DF_CSTATE_DISALLOW))
dev_warn(adev->dev, "Failed to disallow df cstate");
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.valid)
continue;