drm/amd/pm: Add pm metrics support to SMU v13.0.6

Add support to fetch PM metrics sample from SMU v13.0.6
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c

@@ -120,6 +120,7 @@ struct mca_ras_info {
 #define P2S_TABLE_ID_A 0x50325341
 #define P2S_TABLE_ID_X 0x50325358
 
+// clang-format off
 static const struct cmn2asic_msg_mapping smu_v13_0_6_message_map[SMU_MSG_MAX_COUNT] = {
 	MSG_MAP(TestMessage,			     PPSMC_MSG_TestMessage,			0),
 	MSG_MAP(GetSmuVersion,			     PPSMC_MSG_GetSmuVersion,			1),
@@ -128,6 +129,7 @@ static const struct cmn2asic_msg_mapping smu_v13_0_6_message_map[SMU_MSG_MAX_COU
 	MSG_MAP(DisableAllSmuFeatures,		     PPSMC_MSG_DisableAllSmuFeatures,		0),
 	MSG_MAP(RequestI2cTransaction,		     PPSMC_MSG_RequestI2cTransaction,		0),
 	MSG_MAP(GetMetricsTable,		     PPSMC_MSG_GetMetricsTable,			1),
+	MSG_MAP(GetMetricsVersion,		     PPSMC_MSG_GetMetricsVersion,		1),
 	MSG_MAP(GetEnabledSmuFeaturesHigh,	     PPSMC_MSG_GetEnabledSmuFeaturesHigh,	1),
 	MSG_MAP(GetEnabledSmuFeaturesLow,	     PPSMC_MSG_GetEnabledSmuFeaturesLow,	1),
 	MSG_MAP(SetDriverDramAddrHigh,		     PPSMC_MSG_SetDriverDramAddrHigh,		1),
@@ -171,6 +173,7 @@ static const struct cmn2asic_msg_mapping smu_v13_0_6_message_map[SMU_MSG_MAX_COU
 	MSG_MAP(SelectPLPDMode,                      PPSMC_MSG_SelectPLPDMode,                  0),
 };
 
+// clang-format on
 static const struct cmn2asic_mapping smu_v13_0_6_clk_map[SMU_CLK_COUNT] = {
 	CLK_MAP(SOCCLK, PPCLK_SOCCLK),
 	CLK_MAP(FCLK, PPCLK_FCLK),
@@ -428,6 +431,41 @@ static int smu_v13_0_6_get_metrics_table(struct smu_context *smu,
 	return 0;
 }
 
+static ssize_t smu_v13_0_6_get_pm_metrics(struct smu_context *smu,
+					  void *metrics, size_t max_size)
+{
+	struct smu_table_context *smu_tbl_ctxt = &smu->smu_table;
+	uint32_t table_version = smu_tbl_ctxt->tables[SMU_TABLE_SMU_METRICS].version;
+	uint32_t table_size = smu_tbl_ctxt->tables[SMU_TABLE_SMU_METRICS].size;
+	struct amdgpu_pm_metrics *pm_metrics = metrics;
+	uint32_t pmfw_version;
+	int ret;
+
+	if (!pm_metrics || !max_size)
+		return -EINVAL;
+
+	if (max_size < (table_size + sizeof(pm_metrics->common_header)))
+		return -EOVERFLOW;
+
+	/* Don't use cached metrics data */
+	ret = smu_v13_0_6_get_metrics_table(smu, pm_metrics->data, true);
+	if (ret)
+		return ret;
+
+	smu_cmn_get_smc_version(smu, NULL, &pmfw_version);
+
+	memset(&pm_metrics->common_header, 0,
+	       sizeof(pm_metrics->common_header));
+	pm_metrics->common_header.mp1_ip_discovery_version =
+		IP_VERSION(13, 0, 6);
+	pm_metrics->common_header.pmfw_version = pmfw_version;
+	pm_metrics->common_header.pmmetrics_version = table_version;
+	pm_metrics->common_header.structure_size =
+		sizeof(pm_metrics->common_header) + table_size;
+
+	return pm_metrics->common_header.structure_size;
+}
+
 static int smu_v13_0_6_setup_driver_pptable(struct smu_context *smu)
 {
 	struct smu_table_context *smu_table = &smu->smu_table;
@@ -435,6 +473,7 @@ static int smu_v13_0_6_setup_driver_pptable(struct smu_context *smu)
 	struct PPTable_t *pptable =
 		(struct PPTable_t *)smu_table->driver_pptable;
 	int ret, i, retry = 100;
+	uint32_t table_version;
 
 	/* Store one-time values in driver PPTable */
 	if (!pptable->Init) {
@@ -453,6 +492,13 @@ static int smu_v13_0_6_setup_driver_pptable(struct smu_context *smu)
 		if (!retry)
 			return -ETIME;
 
+		ret = smu_cmn_send_smc_msg(smu, SMU_MSG_GetMetricsVersion,
+					   &table_version);
+		if (ret)
+			return ret;
+		smu_table->tables[SMU_TABLE_SMU_METRICS].version =
+			table_version;
+
 		pptable->MaxSocketPowerLimit =
 			SMUQ10_ROUND(metrics->MaxSocketPowerLimit);
 		pptable->MaxGfxclkFrequency =
@@ -2864,6 +2910,7 @@ static const struct pptable_funcs smu_v13_0_6_ppt_funcs = {
 	.log_thermal_throttling_event = smu_v13_0_6_log_thermal_throttling_event,
 	.get_pp_feature_mask = smu_cmn_get_pp_feature_mask,
 	.get_gpu_metrics = smu_v13_0_6_get_gpu_metrics,
+	.get_pm_metrics = smu_v13_0_6_get_pm_metrics,
 	.get_thermal_temperature_range = smu_v13_0_6_get_thermal_temperature_range,
 	.mode1_reset_is_support = smu_v13_0_6_is_mode1_reset_supported,
 	.mode2_reset_is_support = smu_v13_0_6_is_mode2_reset_supported,