From 06a47c1144fbc6ccddbdfcb22cfe22987b01770a Mon Sep 17 00:00:00 2001
From: Guchun Chen <guchun.chen@amd.com>
Date: Thu, 14 Jul 2022 15:55:37 +0800
Subject: drm/amdgpu: skip SMU FW reloading in runpm BACO case
Git-commit: f746556aa9724d740c44861db0ac005ae50e1332
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
SMU is always alive, so it's fine to skip SMU FW reloading
when runpm resumed from BACO, this can avoid some race issues
when resuming SMU.
Suggested-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index e9411c28d88b..6540582ecbf8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -2348,6 +2348,13 @@ static int psp_load_smu_fw(struct psp_context *psp)
&adev->firmware.ucode[AMDGPU_UCODE_ID_SMC];
struct amdgpu_ras *ras = psp->ras_context.ras;
+ /*
+ * Skip SMU FW reloading in case of using BACO for runpm only,
+ * as SMU is always alive.
+ */
+ if (adev->in_runpm && (adev->pm.rpm_mode == AMDGPU_RUNPM_BACO))
+ return 0;
+
if (!ucode->fw || amdgpu_sriov_vf(psp->adev))
return 0;
--
2.38.1