263 lines
7.4 KiB
C
263 lines
7.4 KiB
C
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/* Copyright (c) 2012, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _ARCH_ARM_MACH_MSM_MSM_DCVS_SCM_H
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#define _ARCH_ARM_MACH_MSM_MSM_DCVS_SCM_H
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enum msm_dcvs_core_type {
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MSM_DCVS_CORE_TYPE_CPU = 0,
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MSM_DCVS_CORE_TYPE_GPU = 1,
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};
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enum msm_dcvs_algo_param_type {
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MSM_DCVS_ALGO_DCVS_PARAM = 0,
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MSM_DCVS_ALGO_MPD_PARAM = 1,
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};
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enum msm_dcvs_scm_event {
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MSM_DCVS_SCM_IDLE_ENTER = 0, /* Core enters idle */
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MSM_DCVS_SCM_IDLE_EXIT = 1, /* Core exits idle */
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MSM_DCVS_SCM_QOS_TIMER_EXPIRED = 2, /* Core slack timer expired */
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MSM_DCVS_SCM_CLOCK_FREQ_UPDATE = 3, /* Core freq change complete */
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MSM_DCVS_SCM_CORE_ONLINE = 4, /* Core is online */
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MSM_DCVS_SCM_CORE_OFFLINE = 5, /* Core is offline */
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MSM_DCVS_SCM_CORE_UNAVAILABLE = 6, /* Core is offline + unavailable */
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MSM_DCVS_SCM_DCVS_ENABLE = 7, /* DCVS is enabled/disabled for core */
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MSM_DCVS_SCM_MPD_ENABLE = 8, /* Enable/disable MP Decision */
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MSM_DCVS_SCM_RUNQ_UPDATE = 9, /* Update running threads */
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MSM_DCVS_SCM_MPD_QOS_TIMER_EXPIRED = 10, /* MPDecision slack timer */
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};
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struct msm_dcvs_algo_param {
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uint32_t disable_pc_threshold;
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uint32_t em_win_size_min_us;
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uint32_t em_win_size_max_us;
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uint32_t em_max_util_pct;
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uint32_t group_id;
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uint32_t max_freq_chg_time_us;
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uint32_t slack_mode_dynamic;
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uint32_t slack_time_min_us;
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uint32_t slack_time_max_us;
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uint32_t slack_weight_thresh_pct;
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uint32_t ss_no_corr_below_freq;
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uint32_t ss_win_size_min_us;
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uint32_t ss_win_size_max_us;
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uint32_t ss_util_pct;
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};
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struct msm_dcvs_freq_entry {
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uint32_t freq;
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uint32_t voltage;
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uint32_t is_trans_level;
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uint32_t active_energy_offset;
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uint32_t leakage_energy_offset;
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};
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struct msm_dcvs_energy_curve_coeffs {
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int32_t active_coeff_a;
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int32_t active_coeff_b;
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int32_t active_coeff_c;
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int32_t leakage_coeff_a;
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int32_t leakage_coeff_b;
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int32_t leakage_coeff_c;
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int32_t leakage_coeff_d;
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};
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struct msm_dcvs_power_params {
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uint32_t current_temp;
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uint32_t num_freq; /* number of msm_dcvs_freq_entry passed */
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};
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struct msm_dcvs_core_param {
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uint32_t core_type;
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uint32_t core_bitmask_id;
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};
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struct msm_mpd_algo_param {
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uint32_t em_win_size_min_us;
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uint32_t em_win_size_max_us;
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uint32_t em_max_util_pct;
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uint32_t mp_em_rounding_point_min;
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uint32_t mp_em_rounding_point_max;
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uint32_t online_util_pct_min;
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uint32_t online_util_pct_max;
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uint32_t slack_time_min_us;
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uint32_t slack_time_max_us;
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};
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#ifdef CONFIG_MSM_DCVS
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/**
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* Initialize DCVS algorithm in TrustZone.
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* Must call before invoking any other DCVS call into TZ.
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*
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* @size: Size of buffer in bytes
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*
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* @return:
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* 0 on success.
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* -EEXIST: DCVS algorithm already initialized.
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* -EINVAL: Invalid args.
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*/
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extern int msm_dcvs_scm_init(size_t size);
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/**
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* Registers cores with the DCVS algo.
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*
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* @core_id: The core identifier that will be used for communication with DCVS
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* @param: The core parameters
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* @freq: Array of frequency and energy values
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*
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* @return:
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* 0 on success.
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* -ENOMEM: Insufficient memory.
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* -EINVAL: Invalid args.
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*/
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extern int msm_dcvs_scm_register_core(uint32_t core_id,
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struct msm_dcvs_core_param *param);
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/**
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* Set DCVS algorithm parameters
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*
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* @core_id: The algorithm parameters specific for the core
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* @param: The param data structure
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*
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* @return:
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* 0 on success.
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* -EINVAL: Invalid args.
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*/
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extern int msm_dcvs_scm_set_algo_params(uint32_t core_id,
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struct msm_dcvs_algo_param *param);
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/**
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* Set MPDecision algorithm parameters
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*
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* @param: The param data structure
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* 0 on success.
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* -EINVAL: Invalid args.
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*/
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extern int msm_mpd_scm_set_algo_params(struct msm_mpd_algo_param *param);
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/**
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* Set frequency and power characteristics for the core.
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*
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* @param core_id: The core identifier that will be used to interace with the
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* DCVS algo.
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* @param pwr_param: power params
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* @param freq_entry: frequency characteristics desired
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* @param coeffs: Coefficients that will describe the power curve
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*
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* @return int
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* 0 on success.
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* -EINVAL: Invalid args.
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*/
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extern int msm_dcvs_scm_set_power_params(uint32_t core_id,
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struct msm_dcvs_power_params *pwr_param,
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struct msm_dcvs_freq_entry *freq_entry,
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struct msm_dcvs_energy_curve_coeffs *coeffs);
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/**
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* Do an SCM call.
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*
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* @core_id: The core identifier.
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* @event_id: The event that occured.
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* Possible values:
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* MSM_DCVS_SCM_IDLE_ENTER
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* @param0: unused
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* @param1: unused
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* @ret0: unused
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* @ret1: unused
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* MSM_DCVS_SCM_IDLE_EXIT
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* @param0: Did the core iowait
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* @param1: unused
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* @ret0: New clock frequency for the core in KHz
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* @ret1: New QoS timer value for the core in usec
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* MSM_DCVS_SCM_QOS_TIMER_EXPIRED
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* @param0: unused
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* @param1: unused
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* @ret0: New clock frequency for the core in KHz
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* @ret1: unused
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* MSM_DCVS_SCM_CLOCK_FREQ_UPDATE
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* @param0: active clock frequency of the core in KHz
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* @param1: time taken in usec to switch to the frequency
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* @ret0: New QoS timer value for the core in usec
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* @ret1: unused
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* MSM_DCVS_SCM_CORE_ONLINE
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* @param0: active clock frequency of the core in KHz
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* @param1: time taken to online the core
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* @ret0: unused
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* @ret1: unused
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* MSM_DCVS_SCM_CORE_OFFLINE
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* @param0: time taken to offline the core
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* @param1: unused
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* @ret0: unused
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* @ret1: unused
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* MSM_DCVS_SCM_CORE_UNAVAILABLE
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* @param0: TODO:bitmask
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* @param1: unused
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* @ret0: Bitmask of cores to bring online/offline.
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* @ret1: Mp Decision slack time. Common to all cores.
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* MSM_DCVS_SCM_DCVS_ENABLE
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* @param0: 1 to enable; 0 to disable DCVS
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* @param1: unused
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* @ret0: New clock frequency for the core in KHz
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* @ret1: unused
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* MSM_DCVS_SCM_MPD_ENABLE
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* @param0: 1 to enable; 0 to disable MP Decision
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* @param1: unused
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* @ret0: unused
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* @ret1: unused
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* MSM_DCVS_SCM_RUNQ_UPDATE
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* @param0: run q value
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* @param1: unused
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* @ret0: Bitmask of cores online
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* @ret1: New QoS timer for MP Decision (usec)
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* MSM_DCVS_SCM_MPD_QOS_TIMER_EXPIRED
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* @param0: unused
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* @param1: unused
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* @ret0: Bitmask of cores online
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* @ret1: New QoS timer for MP Decision (usec)
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* @return:
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* 0 on success,
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* SCM return values
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*/
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extern int msm_dcvs_scm_event(uint32_t core_id,
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enum msm_dcvs_scm_event event_id,
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uint32_t param0, uint32_t param1,
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uint32_t *ret0, uint32_t *ret1);
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#else
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static inline int msm_dcvs_scm_init(uint32_t phy, size_t bytes)
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{ return -ENOSYS; }
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static inline int msm_dcvs_scm_register_core(uint32_t core_id,
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struct msm_dcvs_core_param *param,
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struct msm_dcvs_freq_entry *freq)
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{ return -ENOSYS; }
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static inline int msm_dcvs_scm_set_algo_params(uint32_t core_id,
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struct msm_dcvs_algo_param *param)
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{ return -ENOSYS; }
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static inline int msm_mpd_scm_set_algo_params(
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struct msm_mpd_algo_param *param)
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{ return -ENOSYS; }
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static inline int msm_dcvs_set_power_params(uint32_t core_id,
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struct msm_dcvs_power_params *pwr_param,
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struct msm_dcvs_freq_entry *freq_entry,
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struct msm_dcvs_energy_curve_coeffs *coeffs)
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{ return -ENOSYS; }
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static inline int msm_dcvs_scm_event(uint32_t core_id,
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enum msm_dcvs_scm_event event_id,
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uint32_t param0, uint32_t param1,
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uint32_t *ret0, uint32_t *ret1)
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{ return -ENOSYS; }
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#endif
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#endif
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