drm/amd/pm: implement the processor clocks which read by metric

The core processor clocks will be stored in smu metric table, then we
add this runtime information into amdgpu_pm_info interface.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -103,6 +103,7 @@ enum pp_clock_type {
 
 enum amd_pp_sensors {
 	AMDGPU_PP_SENSOR_GFX_SCLK = 0,
+	AMDGPU_PP_SENSOR_CPU_CLK,
 	AMDGPU_PP_SENSOR_VDDNB,
 	AMDGPU_PP_SENSOR_VDDGFX,
 	AMDGPU_PP_SENSOR_UVD_VCLK,

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

@@ -36,6 +36,7 @@
 #include <linux/hwmon-sysfs.h>
 #include <linux/nospec.h>
 #include <linux/pm_runtime.h>
+#include <asm/processor.h>
 #include "hwmgr.h"
 
 static const struct cg_flag_name clocks[] = {
@@ -3622,6 +3623,27 @@ void amdgpu_pm_sysfs_fini(struct amdgpu_device *adev)
  */
 #if defined(CONFIG_DEBUG_FS)
 
+static void amdgpu_debugfs_prints_cpu_info(struct seq_file *m,
+					   struct amdgpu_device *adev) {
+	uint16_t *p_val;
+	uint32_t size;
+	int i;
+
+	if (is_support_cclk_dpm(adev)) {
+		p_val = kcalloc(boot_cpu_data.x86_max_cores, sizeof(uint16_t),
+				GFP_KERNEL);
+
+		if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_CPU_CLK,
+					    (void *)p_val, &size)) {
+			for (i = 0; i < boot_cpu_data.x86_max_cores; i++)
+				seq_printf(m, "\t%u MHz (CPU%d)\n",
+					   *(p_val + i), i);
+		}
+
+		kfree(p_val);
+	}
+}
+
 static int amdgpu_debugfs_pm_info_pp(struct seq_file *m, struct amdgpu_device *adev)
 {
 	uint32_t value;
@@ -3632,6 +3654,9 @@ static int amdgpu_debugfs_pm_info_pp(struct seq_file *m, struct amdgpu_device *a
 	/* GPU Clocks */
 	size = sizeof(value);
 	seq_printf(m, "GFX Clocks and Power:\n");
+
+	amdgpu_debugfs_prints_cpu_info(m, adev);
+
 	if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GFX_MCLK, (void *)&value, &size))
 		seq_printf(m, "\t%u MHz (MCLK)\n", value/100);
 	if (!amdgpu_dpm_read_sensor(adev, AMDGPU_PP_SENSOR_GFX_SCLK, (void *)&value, &size))

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

@@ -1125,6 +1125,7 @@ typedef enum {
 	METRICS_CURR_DCLK1,
 	METRICS_CURR_FCLK,
 	METRICS_CURR_DCEFCLK,
+	METRICS_AVERAGE_CPUCLK,
 	METRICS_AVERAGE_GFXCLK,
 	METRICS_AVERAGE_SOCCLK,
 	METRICS_AVERAGE_FCLK,
@@ -1253,6 +1254,7 @@ extern const struct amdgpu_ip_block_version smu_v11_0_ip_block;
 extern const struct amdgpu_ip_block_version smu_v12_0_ip_block;
 
 bool is_support_sw_smu(struct amdgpu_device *adev);
+bool is_support_cclk_dpm(struct amdgpu_device *adev);
 int smu_reset(struct smu_context *smu);
 int smu_sys_get_pp_table(struct smu_context *smu, void **table);
 int smu_sys_set_pp_table(struct smu_context *smu,  void *buf, size_t size);

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

@@ -288,6 +288,20 @@ bool is_support_sw_smu(struct amdgpu_device *adev)
 	return false;
 }
 
+bool is_support_cclk_dpm(struct amdgpu_device *adev)
+{
+	struct smu_context *smu = &adev->smu;
+
+	if (!is_support_sw_smu(adev))
+		return false;
+
+	if (!smu_feature_is_enabled(smu, SMU_FEATURE_CCLK_DPM_BIT))
+		return false;
+
+	return true;
+}
+
+
 int smu_sys_get_pp_table(struct smu_context *smu, void **table)
 {
 	struct smu_table_context *smu_table = &smu->smu_table;

drivers/gpu/drm/amd/pm/swsmu/smu11/vangogh_ppt.c

@@ -34,6 +34,7 @@
 #include "soc15_common.h"
 #include "asic_reg/gc/gc_10_3_0_offset.h"
 #include "asic_reg/gc/gc_10_3_0_sh_mask.h"
+#include <asm/processor.h>
 
 /*
  * DO NOT use these for err/warn/info/debug messages.
@@ -294,6 +295,10 @@ static int vangogh_get_smu_metrics_data(struct smu_context *smu,
 	case METRICS_VOLTAGE_VDDSOC:
 		*value = metrics->Voltage[1];
 		break;
+	case METRICS_AVERAGE_CPUCLK:
+		memcpy(value, &metrics->CoreFrequency[0],
+		       boot_cpu_data.x86_max_cores * sizeof(uint16_t));
+		break;
 	default:
 		*value = UINT_MAX;
 		break;
@@ -1254,6 +1259,12 @@ static int vangogh_read_sensor(struct smu_context *smu,
 						   (uint32_t *)data);
 		*size = 4;
 		break;
+	case AMDGPU_PP_SENSOR_CPU_CLK:
+		ret = vangogh_get_smu_metrics_data(smu,
+						   METRICS_AVERAGE_CPUCLK,
+						   (uint32_t *)data);
+		*size = boot_cpu_data.x86_max_cores * sizeof(uint16_t);
+		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;