From a0c8827a8cfaf2a2c24cde3a5608046048153216 Mon Sep 17 00:00:00 2001
From: Yifan Zha <Yifan.Zha@amd.com>
Date: Tue, 23 Aug 2022 13:54:57 +0800
Subject: drm/amd: Skip smu_v13 register irq on SRIOV VF
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Git-commit: 72be7316587835e0c76dad472569453e902b562e
Patch-mainline: v6.1-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

[Why]
VF do not need to handle SMU IRQ state.
L1 Policy will block VF access THM_THERMAL_INT_CTRL and MP1_SMN_IH_SW_INT/CNTL.

[How]
Skip smu_v13 init register_irq_handler under SRIOV VF.
And add irq_src check in enable/disable thermal alert
to avoid thermal alert enable/disable fail.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
index 1675ceffb030..d9323293179a 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
@@ -1065,6 +1065,9 @@ int smu_v13_0_enable_thermal_alert(struct smu_context *smu)
 {
 	int ret = 0;
 
+	if (!smu->irq_source.num_types)
+		return 0;
+
 	ret = amdgpu_irq_get(smu->adev, &smu->irq_source, 0);
 	if (ret)
 		return ret;
@@ -1074,6 +1077,9 @@ int smu_v13_0_enable_thermal_alert(struct smu_context *smu)
 
 int smu_v13_0_disable_thermal_alert(struct smu_context *smu)
 {
+	if (!smu->irq_source.num_types)
+		return 0;
+
 	return amdgpu_irq_put(smu->adev, &smu->irq_source, 0);
 }
 
@@ -1445,6 +1451,9 @@ int smu_v13_0_register_irq_handler(struct smu_context *smu)
 	struct amdgpu_irq_src *irq_src = &smu->irq_source;
 	int ret = 0;
 
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
 	irq_src->num_types = 1;
 	irq_src->funcs = &smu_v13_0_irq_funcs;
 
-- 
2.38.1