From: Lijo Lazar <lijo.lazar@amd.com>
Date: Fri, 13 Jun 2025 12:38:22 +0000 (+0530)
Subject: drm/amd/pm: Fetch SMUv13.0.12 xgmi max speed/width
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1bec2f270766f203b1c9786d6a023fd79704f70e;p=thirdparty%2Flinux.git

drm/amd/pm: Fetch SMUv13.0.12 xgmi max speed/width

On SMU v13.0.12 SOCs, fetch the max values of xgmi speed/width from
firmware.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Asad Kamal <asad.kamal@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_12_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_12_ppt.c
index 99663165363e2..b3adeb6e43a81 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_12_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_12_ppt.c
@@ -187,6 +187,31 @@ int smu_v13_0_12_get_max_metrics_size(void)
 	return max(sizeof(StaticMetricsTable_t), sizeof(MetricsTable_t));
 }
 
+static void smu_v13_0_12_init_xgmi_data(struct smu_context *smu,
+					StaticMetricsTable_t *static_metrics)
+{
+	struct smu_table_context *smu_table = &smu->smu_table;
+	uint16_t max_speed;
+	uint8_t max_width;
+	int ret;
+
+	if (smu_table->tables[SMU_TABLE_SMU_METRICS].version >= 0x13) {
+		max_width = (uint8_t)static_metrics->MaxXgmiWidth;
+		max_speed = (uint16_t)static_metrics->MaxXgmiBitrate;
+		ret = 0;
+	} else {
+		MetricsTable_t *metrics = (MetricsTable_t *)smu_table->metrics_table;
+
+		ret = smu_v13_0_6_get_metrics_table(smu, NULL, true);
+		if (!ret) {
+			max_width = (uint8_t)metrics->XgmiWidth;
+			max_speed = (uint16_t)metrics->XgmiBitrate;
+		}
+	}
+	if (!ret)
+		amgpu_xgmi_set_max_speed_width(smu->adev, max_speed, max_width);
+}
+
 int smu_v13_0_12_setup_driver_pptable(struct smu_context *smu)
 {
 	struct smu_13_0_dpm_context *dpm_context = smu->smu_dpm.dpm_context;
@@ -249,6 +274,7 @@ int smu_v13_0_12_setup_driver_pptable(struct smu_context *smu)
 			static_metrics->pldmVersion[0] != 0xFFFFFFFF)
 			smu->adev->firmware.pldm_version =
 				static_metrics->pldmVersion[0];
+		smu_v13_0_12_init_xgmi_data(smu, static_metrics);
 		pptable->Init = true;
 	}
 
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
index 1e0ba0cff9233..68624afe7d836 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -690,8 +690,8 @@ static int smu_v13_0_6_get_allowed_feature_mask(struct smu_context *smu,
 	return 0;
 }
 
-static int smu_v13_0_6_get_metrics_table(struct smu_context *smu,
-					 void *metrics_table, bool bypass_cache)
+int smu_v13_0_6_get_metrics_table(struct smu_context *smu, void *metrics_table,
+				  bool bypass_cache)
 {
 	struct smu_table_context *smu_table = &smu->smu_table;
 	uint32_t table_size = smu_table->tables[SMU_TABLE_SMU_METRICS].size;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
index d38d6d76b1e79..67b30674fd319 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.h
@@ -74,6 +74,8 @@ enum smu_v13_0_6_caps {
 extern void smu_v13_0_6_set_ppt_funcs(struct smu_context *smu);
 bool smu_v13_0_6_cap_supported(struct smu_context *smu, enum smu_v13_0_6_caps cap);
 int smu_v13_0_6_get_static_metrics_table(struct smu_context *smu);
+int smu_v13_0_6_get_metrics_table(struct smu_context *smu, void *metrics_table,
+				  bool bypass_cache);
 
 bool smu_v13_0_12_is_dpm_running(struct smu_context *smu);
 int smu_v13_0_12_get_max_metrics_size(void);