Commit 7794e998 authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amd/pm: Add xgmi plpd to aldebaran pm_policy 



On aldebaran, allow changing xgmi plpd policy through
'pm_policy/xgmi_plpd' sysfs interface.

Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: default avatarAsad Kamal <asad.kamal@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 20897c6e

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

+36 −0
Original line number Diff line number Diff line
@@ -266,9 +266,31 @@ static int aldebaran_tables_init(struct smu_context *smu) 
	return 0;

}



static int aldebaran_select_plpd_policy(struct smu_context *smu, int level)

{

	struct amdgpu_device *adev = smu->adev;



	/* The message only works on master die and NACK will be sent

	 * back for other dies, only send it on master die.

	 */

	if (adev->smuio.funcs->get_socket_id(adev) ||

	    adev->smuio.funcs->get_die_id(adev))

		return 0;



	if (level == XGMI_PLPD_DEFAULT)

		return smu_cmn_send_smc_msg_with_param(

			smu, SMU_MSG_GmiPwrDnControl, 0, NULL);

	else if (level == XGMI_PLPD_DISALLOW)

		return smu_cmn_send_smc_msg_with_param(

			smu, SMU_MSG_GmiPwrDnControl, 1, NULL);

	else

		return -EINVAL;

}



static int aldebaran_allocate_dpm_context(struct smu_context *smu)

{

	struct smu_dpm_context *smu_dpm = &smu->smu_dpm;

	struct smu_dpm_policy *policy;



	smu_dpm->dpm_context = kzalloc(sizeof(struct smu_13_0_dpm_context),

				       GFP_KERNEL);
@@ -276,6 +298,20 @@ static int aldebaran_allocate_dpm_context(struct smu_context *smu) 
		return -ENOMEM;

	smu_dpm->dpm_context_size = sizeof(struct smu_13_0_dpm_context);



	smu_dpm->dpm_policies =

		kzalloc(sizeof(struct smu_dpm_policy_ctxt), GFP_KERNEL);



	if (!smu_dpm->dpm_policies)

		return -ENOMEM;



	policy = &(smu_dpm->dpm_policies->policies[0]);

	policy->policy_type = PP_PM_POLICY_XGMI_PLPD;

	policy->level_mask = BIT(XGMI_PLPD_DISALLOW) | BIT(XGMI_PLPD_DEFAULT);

	policy->current_level = XGMI_PLPD_DEFAULT;

	policy->set_policy = aldebaran_select_plpd_policy;

	smu_cmn_generic_plpd_policy_desc(policy);

	smu_dpm->dpm_policies->policy_mask |= BIT(PP_PM_POLICY_XGMI_PLPD);



	return 0;

}