Commit d07f1c20 authored by Le Ma's avatar Le Ma Committed by Alex Deucher
Browse files

drm/amd/pm: add xgmi plpd mode selecting interface for smu v13.0.6 



Add the interface to change xgmi per-link power down policy.

v2: split from sysfs interface code and miscellaneous updates
v3: check against XGMI_PLPD_DEFAULT/XGMI_PLPD_OPTIMIZED and
    pass PPSMC param

Signed-off-by: default avatarLe Ma <le.ma@amd.com>
Reviewed-by: default avatarAsad Kamal <asad.kamal@amd.com>
Reviewed-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 10d9ee96

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

+24 −0
Original line number Diff line number Diff line
@@ -3157,6 +3157,30 @@ static int smu_get_prv_buffer_details(void *handle, void **addr, size_t *size) 
	return 0;

}



int smu_set_xgmi_plpd_mode(struct smu_context *smu,

			   enum pp_xgmi_plpd_mode mode)

{

	int ret = -EOPNOTSUPP;



	if (!smu->pm_enabled || !smu->adev->pm.dpm_enabled)

		return ret;



	/* PLPD policy is not supported if it's NONE */

	if (smu->plpd_mode == XGMI_PLPD_NONE)

		return ret;



	if (smu->plpd_mode == mode)

		return 0;



	if (smu->ppt_funcs && smu->ppt_funcs->select_xgmi_plpd_policy)

		ret = smu->ppt_funcs->select_xgmi_plpd_policy(smu, mode);



	if (!ret)

		smu->plpd_mode = mode;



	return ret;

}



static const struct amd_pm_funcs swsmu_pm_funcs = {

	/* export for sysfs */

	.set_fan_control_mode    = smu_set_fan_control_mode,

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

+9 −0
Original line number Diff line number Diff line
@@ -840,6 +840,12 @@ struct pptable_funcs { 
	 */

	int (*allow_xgmi_power_down)(struct smu_context *smu, bool en);



	/**

	 * @select_xgmi_plpd_policy: Select xgmi per-link power down policy.

	 */

	int (*select_xgmi_plpd_policy)(struct smu_context *smu,

				       enum pp_xgmi_plpd_mode mode);



	/**

	 * @update_pcie_parameters: Update and upload the system's PCIe

	 *                          capabilites to the SMU.
@@ -1487,6 +1493,9 @@ int smu_set_ac_dc(struct smu_context *smu); 


int smu_allow_xgmi_power_down(struct smu_context *smu, bool en);



int smu_set_xgmi_plpd_mode(struct smu_context *smu,

			   enum pp_xgmi_plpd_mode mode);



int smu_get_entrycount_gfxoff(struct smu_context *smu, u64 *value);



int smu_get_residency_gfxoff(struct smu_context *smu, u32 *value);

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

+2 −1
Original line number Diff line number Diff line
@@ -252,7 +252,8 @@ 
	__SMU_DUMMY_MAP(QueryValidMcaCount),	\

	__SMU_DUMMY_MAP(QueryValidMcaCeCount),	\

	__SMU_DUMMY_MAP(McaBankDumpDW),		\

	__SMU_DUMMY_MAP(McaBankCeDumpDW),

	__SMU_DUMMY_MAP(McaBankCeDumpDW),	\

	__SMU_DUMMY_MAP(SelectPLPDMode),



#undef __SMU_DUMMY_MAP

#define __SMU_DUMMY_MAP(type)	SMU_MSG_##type

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

+31 −0
Original line number Diff line number Diff line
@@ -170,6 +170,7 @@ static const struct cmn2asic_msg_mapping smu_v13_0_6_message_map[SMU_MSG_MAX_COU 
	MSG_MAP(QueryValidMcaCeCount,                PPSMC_MSG_QueryValidMcaCeCount,            0),

	MSG_MAP(McaBankDumpDW,                       PPSMC_MSG_McaBankDumpDW,                   0),

	MSG_MAP(McaBankCeDumpDW,                     PPSMC_MSG_McaBankCeDumpDW,                 0),

	MSG_MAP(SelectPLPDMode,                      PPSMC_MSG_SelectPLPDMode,                  0),

};



static const struct cmn2asic_mapping smu_v13_0_6_clk_map[SMU_CLK_COUNT] = {
@@ -2716,6 +2717,35 @@ static const struct amdgpu_mca_smu_funcs smu_v13_0_6_mca_smu_funcs = { 
	.mca_get_ras_mca_idx_array = mca_smu_get_ras_mca_idx_array,

};



static int smu_v13_0_6_select_xgmi_plpd_policy(struct smu_context *smu,

					       enum pp_xgmi_plpd_mode mode)

{

	struct amdgpu_device *adev = smu->adev;

	int ret, param;



	switch (mode) {

	case XGMI_PLPD_DEFAULT:

		param = PPSMC_PLPD_MODE_DEFAULT;

		break;

	case XGMI_PLPD_OPTIMIZED:

		param = PPSMC_PLPD_MODE_OPTIMIZED;

		break;

	default:

		return -EINVAL;

	}



	/* change xgmi per-link power down policy */

	ret = smu_cmn_send_smc_msg_with_param(

		smu, SMU_MSG_SelectPLPDMode, param, NULL);



	if (ret)

		dev_err(adev->dev,

			"select xgmi per-link power down policy %d failed\n",

			mode);



	return ret;

}



static const struct pptable_funcs smu_v13_0_6_ppt_funcs = {

	/* init dpm */

	.get_allowed_feature_mask = smu_v13_0_6_get_allowed_feature_mask,
@@ -2756,6 +2786,7 @@ static const struct pptable_funcs smu_v13_0_6_ppt_funcs = { 
	.od_edit_dpm_table = smu_v13_0_6_usr_edit_dpm_table,

	.set_df_cstate = smu_v13_0_6_set_df_cstate,

	.allow_xgmi_power_down = smu_v13_0_6_allow_xgmi_power_down,

	.select_xgmi_plpd_policy = smu_v13_0_6_select_xgmi_plpd_policy,

	.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,