drm/amd/pm: Add support to query partition metrics

Add interfaces to query compute partition related metrics data.

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

drivers/gpu/drm/amd/include/kgd_pp_interface.h

@@ -494,6 +494,7 @@ struct amd_pm_funcs {
 	int (*set_df_cstate)(void *handle, enum pp_df_cstate state);
 	int (*set_xgmi_pstate)(void *handle, uint32_t pstate);
 	ssize_t (*get_gpu_metrics)(void *handle, void **table);
+	ssize_t (*get_xcp_metrics)(void *handle, int xcp_id, void *table);
 	ssize_t (*get_pm_metrics)(void *handle, void *pmmetrics, size_t size);
 	int (*set_watermarks_for_clock_ranges)(void *handle,
 					       struct pp_smu_wm_range_sets *ranges);
@@ -1592,4 +1593,27 @@ struct amdgpu_pm_metrics {
 	uint8_t data[];
 };
 
+struct amdgpu_partition_metrics_v1_0 {
+	struct metrics_table_header common_header;
+	/* Current clocks (Mhz) */
+	uint16_t current_gfxclk[MAX_XCC];
+	uint16_t current_socclk[MAX_CLKS];
+	uint16_t current_vclk0[MAX_CLKS];
+	uint16_t current_dclk0[MAX_CLKS];
+	uint16_t current_uclk;
+	uint16_t padding;
+
+	/* Utilization Instantaneous (%) */
+	uint32_t gfx_busy_inst[MAX_XCC];
+	uint16_t jpeg_busy[NUM_JPEG_ENG_V1];
+	uint16_t vcn_busy[NUM_VCN];
+	/* Utilization Accumulated (%) */
+	uint64_t gfx_busy_acc[MAX_XCC];
+	/* Total App Clock Counter Accumulated */
+	uint64_t gfx_below_host_limit_ppt_acc[MAX_XCC];
+	uint64_t gfx_below_host_limit_thm_acc[MAX_XCC];
+	uint64_t gfx_low_utilization_acc[MAX_XCC];
+	uint64_t gfx_below_host_limit_total_acc[MAX_XCC];
+};
+
 #endif

drivers/gpu/drm/amd/pm/amdgpu_dpm.c

@@ -2019,3 +2019,35 @@ int amdgpu_dpm_get_dpm_clock_table(struct amdgpu_device *adev,
 
 	return ret;
 }
+
+/**
+ * amdgpu_dpm_get_xcp_metrics - Retrieve metrics for a specific compute
+ * partition
+ * @adev: Pointer to the device.
+ * @xcp_id: Identifier of the XCP for which metrics are to be retrieved.
+ * @table: Pointer to a buffer where the metrics will be stored. If NULL, the
+ * function returns the size of the metrics structure.
+ *
+ * This function retrieves metrics for a specific XCP, including details such as
+ * VCN/JPEG activity, clock frequencies, and other performance metrics. If the
+ * table parameter is NULL, the function returns the size of the metrics
+ * structure without populating it.
+ *
+ * Return: Size of the metrics structure on success, or a negative error code on failure.
+ */
+ssize_t amdgpu_dpm_get_xcp_metrics(struct amdgpu_device *adev, int xcp_id,
+				   void *table)
+{
+	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
+	int ret = 0;
+
+	if (!pp_funcs->get_xcp_metrics)
+		return 0;
+
+	mutex_lock(&adev->pm.mutex);
+	ret = pp_funcs->get_xcp_metrics(adev->powerplay.pp_handle, xcp_id,
+					table);
+	mutex_unlock(&adev->pm.mutex);
+
+	return ret;
+}

drivers/gpu/drm/amd/pm/inc/amdgpu_dpm.h

@@ -524,6 +524,8 @@ int amdgpu_dpm_get_power_profile_mode(struct amdgpu_device *adev,
 int amdgpu_dpm_set_power_profile_mode(struct amdgpu_device *adev,
 				      long *input, uint32_t size);
 int amdgpu_dpm_get_gpu_metrics(struct amdgpu_device *adev, void **table);
+ssize_t amdgpu_dpm_get_xcp_metrics(struct amdgpu_device *adev, int xcp_id,
+				   void *table);
 
 /**
  * @get_pm_metrics: Get one snapshot of power management metrics from PMFW. The

drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c

@@ -3758,6 +3758,19 @@ int smu_set_pm_policy(struct smu_context *smu, enum pp_pm_policy p_type,
 	return ret;
 }
 
+static ssize_t smu_sys_get_xcp_metrics(void *handle, int xcp_id, void *table)
+{
+	struct smu_context *smu = handle;
+
+	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)
+		return -EOPNOTSUPP;
+
+	if (!smu->adev->xcp_mgr || !smu->ppt_funcs->get_xcp_metrics)
+		return -EOPNOTSUPP;
+
+	return smu->ppt_funcs->get_xcp_metrics(smu, xcp_id, table);
+}
+
 static const struct amd_pm_funcs swsmu_pm_funcs = {
 	/* export for sysfs */
 	.set_fan_control_mode    = smu_set_fan_control_mode,
@@ -3816,6 +3829,7 @@ static const struct amd_pm_funcs swsmu_pm_funcs = {
 	.get_uclk_dpm_states              = smu_get_uclk_dpm_states,
 	.get_dpm_clock_table              = smu_get_dpm_clock_table,
 	.get_smu_prv_buf_details = smu_get_prv_buffer_details,
+	.get_xcp_metrics                  = smu_sys_get_xcp_metrics,
 };
 
 int smu_wait_for_event(struct smu_context *smu, enum smu_event_type event,

drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h

@@ -1466,6 +1466,12 @@ struct pptable_funcs {
 	 */
 	int (*set_wbrf_exclusion_ranges)(struct smu_context *smu,
 					struct freq_band_range *exclusion_ranges);
+	/**
+	 * @get_xcp_metrics: Get a copy of the partition metrics table from SMU.
+	 * Return: Size of table
+	 */
+	ssize_t (*get_xcp_metrics)(struct smu_context *smu, int xcp_id,
+				   void *table);
 };
 
 typedef enum {

drivers/gpu/drm/amd/pm/swsmu/smu_cmn.h

@@ -52,6 +52,18 @@
 		header->structure_size = sizeof(*(ptr));       \
 	} while (0)
 
+#define smu_cmn_init_partition_metrics(ptr, frev, crev)                     \
+	do {                                                                \
+		typecheck(struct amdgpu_partition_metrics_v##frev##_##crev, \
+			  typeof(*(ptr)));                                  \
+		struct metrics_table_header *header =                       \
+			(struct metrics_table_header *)(ptr);               \
+		memset(header, 0xFF, sizeof(*(ptr)));                       \
+		header->format_revision = frev;                             \
+		header->content_revision = crev;                            \
+		header->structure_size = sizeof(*(ptr));                    \
+	} while (0)
+
 extern const int link_speed[];
 
 /* Helper to Convert from PCIE Gen 1/2/3/4/5/6 to 0.1 GT/s speed units */