drm/amd/amdgpu: add power profile support for CI

Signed-off-by: Eric Huang <[e-mail]>
Acked-by: Rex Zhu <[e-mail]>
Acked-by: Alex Deucher <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/amdgpu/ci_dpm.c

···
 	return ret;
 }
 
+static void ci_save_default_power_profile(struct amdgpu_device *adev)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	struct SMU7_Discrete_GraphicsLevel *levels =
+				pi->smc_state_table.GraphicsLevel;
+	uint32_t min_level = 0;
+
+	pi->default_gfx_power_profile.activity_threshold =
+			be16_to_cpu(levels[0].ActivityLevel);
+	pi->default_gfx_power_profile.up_hyst = levels[0].UpH;
+	pi->default_gfx_power_profile.down_hyst = levels[0].DownH;
+	pi->default_gfx_power_profile.type = AMD_PP_GFX_PROFILE;
+
+	pi->default_compute_power_profile = pi->default_gfx_power_profile;
+	pi->default_compute_power_profile.type = AMD_PP_COMPUTE_PROFILE;
+
+	/* Optimize compute power profile: Use only highest
+	 * 2 power levels (if more than 2 are available), Hysteresis:
+	 * 0ms up, 5ms down
+	 */
+	if (pi->smc_state_table.GraphicsDpmLevelCount > 2)
+		min_level = pi->smc_state_table.GraphicsDpmLevelCount - 2;
+	else if (pi->smc_state_table.GraphicsDpmLevelCount == 2)
+		min_level = 1;
+	pi->default_compute_power_profile.min_sclk =
+			be32_to_cpu(levels[min_level].SclkFrequency);
+
+	pi->default_compute_power_profile.up_hyst = 0;
+	pi->default_compute_power_profile.down_hyst = 5;
+
+	pi->gfx_power_profile = pi->default_gfx_power_profile;
+	pi->compute_power_profile = pi->default_compute_power_profile;
+}
+
 static int ci_init_smc_table(struct amdgpu_device *adev)
 {
 	struct ci_power_info *pi = ci_get_pi(adev);
···
 				   pi->sram_end);
 	if (ret)
 		return ret;
+
+	ci_save_default_power_profile(adev);
 
 	return 0;
 }
···
 	return 0;
 }
 
+static int ci_dpm_get_power_profile_state(struct amdgpu_device *adev,
+		struct amd_pp_profile *query)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+
+	if (!pi || !query)
+		return -EINVAL;
+
+	if (query->type == AMD_PP_GFX_PROFILE)
+		memcpy(query, &pi->gfx_power_profile,
+				sizeof(struct amd_pp_profile));
+	else if (query->type == AMD_PP_COMPUTE_PROFILE)
+		memcpy(query, &pi->compute_power_profile,
+				sizeof(struct amd_pp_profile));
+	else
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ci_populate_requested_graphic_levels(struct amdgpu_device *adev,
+		struct amd_pp_profile *request)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	struct ci_dpm_table *dpm_table = &(pi->dpm_table);
+	struct SMU7_Discrete_GraphicsLevel *levels =
+			pi->smc_state_table.GraphicsLevel;
+	uint32_t array = pi->dpm_table_start +
+			offsetof(SMU7_Discrete_DpmTable, GraphicsLevel);
+	uint32_t array_size = sizeof(struct SMU7_Discrete_GraphicsLevel) *
+			SMU7_MAX_LEVELS_GRAPHICS;
+	uint32_t i;
+
+	for (i = 0; i < dpm_table->sclk_table.count; i++) {
+		levels[i].ActivityLevel =
+				cpu_to_be16(request->activity_threshold);
+		levels[i].EnabledForActivity = 1;
+		levels[i].UpH = request->up_hyst;
+		levels[i].DownH = request->down_hyst;
+	}
+
+	return amdgpu_ci_copy_bytes_to_smc(adev, array, (uint8_t *)levels,
+				array_size, pi->sram_end);
+}
+
+static void ci_find_min_clock_masks(struct amdgpu_device *adev,
+		uint32_t *sclk_mask, uint32_t *mclk_mask,
+		uint32_t min_sclk, uint32_t min_mclk)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	struct ci_dpm_table *dpm_table = &(pi->dpm_table);
+	uint32_t i;
+
+	for (i = 0; i < dpm_table->sclk_table.count; i++) {
+		if (dpm_table->sclk_table.dpm_levels[i].enabled &&
+			dpm_table->sclk_table.dpm_levels[i].value >= min_sclk)
+			*sclk_mask |= 1 << i;
+	}
+
+	for (i = 0; i < dpm_table->mclk_table.count; i++) {
+		if (dpm_table->mclk_table.dpm_levels[i].enabled &&
+			dpm_table->mclk_table.dpm_levels[i].value >= min_mclk)
+			*mclk_mask |= 1 << i;
+	}
+}
+
+static int ci_set_power_profile_state(struct amdgpu_device *adev,
+		struct amd_pp_profile *request)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	int tmp_result, result = 0;
+	uint32_t sclk_mask = 0, mclk_mask = 0;
+
+	tmp_result = ci_freeze_sclk_mclk_dpm(adev);
+	if (tmp_result) {
+		DRM_ERROR("Failed to freeze SCLK MCLK DPM!");
+		result = tmp_result;
+	}
+
+	tmp_result = ci_populate_requested_graphic_levels(adev,
+			request);
+	if (tmp_result) {
+		DRM_ERROR("Failed to populate requested graphic levels!");
+		result = tmp_result;
+	}
+
+	tmp_result = ci_unfreeze_sclk_mclk_dpm(adev);
+	if (tmp_result) {
+		DRM_ERROR("Failed to unfreeze SCLK MCLK DPM!");
+		result = tmp_result;
+	}
+
+	ci_find_min_clock_masks(adev, &sclk_mask, &mclk_mask,
+			request->min_sclk, request->min_mclk);
+
+	if (sclk_mask) {
+		if (!pi->sclk_dpm_key_disabled)
+			amdgpu_ci_send_msg_to_smc_with_parameter(
+				adev,
+				PPSMC_MSG_SCLKDPM_SetEnabledMask,
+				pi->dpm_level_enable_mask.
+				sclk_dpm_enable_mask &
+				sclk_mask);
+	}
+
+	if (mclk_mask) {
+		if (!pi->mclk_dpm_key_disabled)
+			amdgpu_ci_send_msg_to_smc_with_parameter(
+				adev,
+				PPSMC_MSG_MCLKDPM_SetEnabledMask,
+				pi->dpm_level_enable_mask.
+				mclk_dpm_enable_mask &
+				mclk_mask);
+	}
+
+
+	return result;
+}
+
+static int ci_dpm_set_power_profile_state(struct amdgpu_device *adev,
+		struct amd_pp_profile *request)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	int ret = -1;
+
+	if (!pi || !request)
+		return -EINVAL;
+
+	if (adev->pm.dpm.forced_level !=
+			AMD_DPM_FORCED_LEVEL_AUTO)
+		return -EINVAL;
+
+	if (request->min_sclk ||
+		request->min_mclk ||
+		request->activity_threshold ||
+		request->up_hyst ||
+		request->down_hyst) {
+		if (request->type == AMD_PP_GFX_PROFILE)
+			memcpy(&pi->gfx_power_profile, request,
+					sizeof(struct amd_pp_profile));
+		else if (request->type == AMD_PP_COMPUTE_PROFILE)
+			memcpy(&pi->compute_power_profile, request,
+					sizeof(struct amd_pp_profile));
+		else
+			return -EINVAL;
+
+		if (request->type == pi->current_power_profile)
+			ret = ci_set_power_profile_state(
+					adev,
+					request);
+	} else {
+		/* set power profile if it exists */
+		switch (request->type) {
+		case AMD_PP_GFX_PROFILE:
+			ret = ci_set_power_profile_state(
+				adev,
+				&pi->gfx_power_profile);
+			break;
+		case AMD_PP_COMPUTE_PROFILE:
+			ret = ci_set_power_profile_state(
+				adev,
+				&pi->compute_power_profile);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (!ret)
+		pi->current_power_profile = request->type;
+
+	return 0;
+}
+
+static int ci_dpm_reset_power_profile_state(struct amdgpu_device *adev,
+		struct amd_pp_profile *request)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+
+	if (!pi || !request)
+		return -EINVAL;
+
+	if (request->type == AMD_PP_GFX_PROFILE) {
+		pi->gfx_power_profile = pi->default_gfx_power_profile;
+		return ci_dpm_set_power_profile_state(adev,
+					  &pi->gfx_power_profile);
+	} else if (request->type == AMD_PP_COMPUTE_PROFILE) {
+		pi->compute_power_profile =
+			pi->default_compute_power_profile;
+		return ci_dpm_set_power_profile_state(adev,
+					  &pi->compute_power_profile);
+	} else
+		return -EINVAL;
+}
+
+static int ci_dpm_switch_power_profile(struct amdgpu_device *adev,
+		enum amd_pp_profile_type type)
+{
+	struct ci_power_info *pi = ci_get_pi(adev);
+	struct amd_pp_profile request = {0};
+
+	if (!pi)
+		return -EINVAL;
+
+	if (pi->current_power_profile != type) {
+		request.type = type;
+		return ci_dpm_set_power_profile_state(adev, &request);
+	}
+
+	return 0;
+}
+
 const struct amd_ip_funcs ci_dpm_ip_funcs = {
 	.name = "ci_dpm",
 	.early_init = ci_dpm_early_init,
···
 	.set_mclk_od = ci_dpm_set_mclk_od,
 	.check_state_equal = ci_check_state_equal,
 	.get_vce_clock_state = amdgpu_get_vce_clock_state,
+	.get_power_profile_state = ci_dpm_get_power_profile_state,
+	.set_power_profile_state = ci_dpm_set_power_profile_state,
+	.reset_power_profile_state = ci_dpm_reset_power_profile_state,
+	.switch_power_profile = ci_dpm_switch_power_profile,
 };
 
 static void ci_dpm_set_dpm_funcs(struct amdgpu_device *adev)

drivers/gpu/drm/amd/amdgpu/ci_dpm.h

···
 	bool fan_is_controlled_by_smc;
 	u32 t_min;
 	u32 fan_ctrl_default_mode;
+
+	/* power profile */
+	struct amd_pp_profile gfx_power_profile;
+	struct amd_pp_profile compute_power_profile;
+	struct amd_pp_profile default_gfx_power_profile;
+	struct amd_pp_profile default_compute_power_profile;
+	enum amd_pp_profile_type current_power_profile;
 };
 
 #define CISLANDS_VOLTAGE_CONTROL_NONE                   0x0