drm/amd/powerplay: add power profile support for Fiji

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Acked-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c
index 0f7a77b7312e..62c41c4fc2e5 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/fiji_smc.c
@@ -1721,6 +1721,43 @@ static int fiji_init_arb_table_index(struct pp_smumgr *smumgr)
 			smu_data->smu7_data.arb_table_start,  tmp, SMC_RAM_END);
 }
 
+static int fiji_save_default_power_profile(struct pp_hwmgr *hwmgr)
+{
+	struct fiji_smumgr *data = (struct fiji_smumgr *)(hwmgr->smumgr->backend);
+	struct SMU73_Discrete_GraphicsLevel *levels =
+				data->smc_state_table.GraphicsLevel;
+	unsigned min_level = 1;
+
+	hwmgr->default_gfx_power_profile.activity_threshold =
+			be16_to_cpu(levels[0].ActivityLevel);
+	hwmgr->default_gfx_power_profile.up_hyst = levels[0].UpHyst;
+	hwmgr->default_gfx_power_profile.down_hyst = levels[0].DownHyst;
+	hwmgr->default_gfx_power_profile.type = AMD_PP_GFX_PROFILE;
+
+	hwmgr->default_compute_power_profile = hwmgr->default_gfx_power_profile;
+	hwmgr->default_compute_power_profile.type = AMD_PP_COMPUTE_PROFILE;
+
+	/* Workaround compute SDMA instability: disable lowest SCLK
+	 * DPM level. Optimize compute power profile: Use only highest
+	 * 2 power levels (if more than 2 are available), Hysteresis:
+	 * 0ms up, 5ms down
+	 */
+	if (data->smc_state_table.GraphicsDpmLevelCount > 2)
+		min_level = data->smc_state_table.GraphicsDpmLevelCount - 2;
+	else if (data->smc_state_table.GraphicsDpmLevelCount == 2)
+		min_level = 1;
+	else
+		min_level = 0;
+	hwmgr->default_compute_power_profile.min_sclk =
+			be32_to_cpu(levels[min_level].SclkFrequency);
+	hwmgr->default_compute_power_profile.up_hyst = 0;
+	hwmgr->default_compute_power_profile.down_hyst = 5;
+
+	hwmgr->gfx_power_profile = hwmgr->default_gfx_power_profile;
+	hwmgr->compute_power_profile = hwmgr->default_compute_power_profile;
+
+	return 0;
+}
 /**
 * Initializes the SMC table and uploads it
 *
@@ -1934,6 +1971,9 @@ int fiji_init_smc_table(struct pp_hwmgr *hwmgr)
 	result = fiji_populate_pm_fuses(hwmgr);
 	PP_ASSERT_WITH_CODE(0 == result,
 			"Failed to  populate PM fuses to SMC memory!", return result);
+
+	fiji_save_default_power_profile(hwmgr);
+
 	return 0;
 }
 
@@ -2378,3 +2418,28 @@ bool fiji_is_dpm_running(struct pp_hwmgr *hwmgr)
 			CGS_IND_REG__SMC, FEATURE_STATUS, VOLTAGE_CONTROLLER_ON))
 			? true : false;
 }
+
+int fiji_populate_requested_graphic_levels(struct pp_hwmgr *hwmgr,
+		struct amd_pp_profile *request)
+{
+	struct fiji_smumgr *smu_data = (struct fiji_smumgr *)
+			(hwmgr->smumgr->backend);
+	struct SMU73_Discrete_GraphicsLevel *levels =
+			smu_data->smc_state_table.GraphicsLevel;
+	uint32_t array = smu_data->smu7_data.dpm_table_start +
+			offsetof(SMU73_Discrete_DpmTable, GraphicsLevel);
+	uint32_t array_size = sizeof(struct SMU73_Discrete_GraphicsLevel) *
+			SMU73_MAX_LEVELS_GRAPHICS;
+	uint32_t i;
+
+	for (i = 0; i < smu_data->smc_state_table.GraphicsDpmLevelCount; i++) {
+		levels[i].ActivityLevel =
+				cpu_to_be16(request->activity_threshold);
+		levels[i].EnabledForActivity = 1;
+		levels[i].UpHyst = request->up_hyst;
+		levels[i].DownHyst = request->down_hyst;
+	}
+
+	return smu7_copy_bytes_to_smc(hwmgr->smumgr, array, (uint8_t *)levels,
+				array_size, SMC_RAM_END);
+}