299 lines
11 KiB
C
299 lines
11 KiB
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* AMD Platform Management Framework Driver
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*
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* Copyright (c) 2022, Advanced Micro Devices, Inc.
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* All Rights Reserved.
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*
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* Author: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
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*/
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#include <linux/acpi.h>
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#include <linux/workqueue.h>
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#include "pmf.h"
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static struct auto_mode_mode_config config_store;
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static const char *state_as_str(unsigned int state);
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static void amd_pmf_set_automode(struct amd_pmf_dev *dev, int idx,
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struct auto_mode_mode_config *table)
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{
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struct power_table_control *pwr_ctrl = &config_store.mode_set[idx].power_control;
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amd_pmf_send_cmd(dev, SET_SPL, false, pwr_ctrl->spl, NULL);
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amd_pmf_send_cmd(dev, SET_FPPT, false, pwr_ctrl->fppt, NULL);
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amd_pmf_send_cmd(dev, SET_SPPT, false, pwr_ctrl->sppt, NULL);
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amd_pmf_send_cmd(dev, SET_SPPT_APU_ONLY, false, pwr_ctrl->sppt_apu_only, NULL);
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amd_pmf_send_cmd(dev, SET_STT_MIN_LIMIT, false, pwr_ctrl->stt_min, NULL);
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amd_pmf_send_cmd(dev, SET_STT_LIMIT_APU, false,
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pwr_ctrl->stt_skin_temp[STT_TEMP_APU], NULL);
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amd_pmf_send_cmd(dev, SET_STT_LIMIT_HS2, false,
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pwr_ctrl->stt_skin_temp[STT_TEMP_HS2], NULL);
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if (is_apmf_func_supported(dev, APMF_FUNC_SET_FAN_IDX))
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apmf_update_fan_idx(dev, config_store.mode_set[idx].fan_control.manual,
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config_store.mode_set[idx].fan_control.fan_id);
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}
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static int amd_pmf_get_moving_avg(struct amd_pmf_dev *pdev, int socket_power)
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{
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int i, total = 0;
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if (pdev->socket_power_history_idx == -1) {
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for (i = 0; i < AVG_SAMPLE_SIZE; i++)
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pdev->socket_power_history[i] = socket_power;
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}
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pdev->socket_power_history_idx = (pdev->socket_power_history_idx + 1) % AVG_SAMPLE_SIZE;
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pdev->socket_power_history[pdev->socket_power_history_idx] = socket_power;
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for (i = 0; i < AVG_SAMPLE_SIZE; i++)
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total += pdev->socket_power_history[i];
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return total / AVG_SAMPLE_SIZE;
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}
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void amd_pmf_trans_automode(struct amd_pmf_dev *dev, int socket_power, ktime_t time_elapsed_ms)
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{
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int avg_power = 0;
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bool update = false;
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int i, j;
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/* Get the average moving average computed by auto mode algorithm */
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avg_power = amd_pmf_get_moving_avg(dev, socket_power);
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for (i = 0; i < AUTO_TRANSITION_MAX; i++) {
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if ((config_store.transition[i].shifting_up && avg_power >=
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config_store.transition[i].power_threshold) ||
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(!config_store.transition[i].shifting_up && avg_power <=
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config_store.transition[i].power_threshold)) {
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if (config_store.transition[i].timer <
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config_store.transition[i].time_constant)
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config_store.transition[i].timer += time_elapsed_ms;
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} else {
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config_store.transition[i].timer = 0;
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}
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if (config_store.transition[i].timer >=
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config_store.transition[i].time_constant &&
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!config_store.transition[i].applied) {
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config_store.transition[i].applied = true;
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update = true;
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} else if (config_store.transition[i].timer <=
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config_store.transition[i].time_constant &&
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config_store.transition[i].applied) {
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config_store.transition[i].applied = false;
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update = true;
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}
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}
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dev_dbg(dev->dev, "[AUTO_MODE] avg power: %u mW mode: %s\n", avg_power,
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state_as_str(config_store.current_mode));
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if (update) {
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for (j = 0; j < AUTO_TRANSITION_MAX; j++) {
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/* Apply the mode with highest priority indentified */
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if (config_store.transition[j].applied) {
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if (config_store.current_mode !=
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config_store.transition[j].target_mode) {
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config_store.current_mode =
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config_store.transition[j].target_mode;
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dev_dbg(dev->dev, "[AUTO_MODE] moving to mode:%s\n",
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state_as_str(config_store.current_mode));
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amd_pmf_set_automode(dev, config_store.current_mode, NULL);
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}
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break;
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}
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}
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}
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}
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void amd_pmf_update_2_cql(struct amd_pmf_dev *dev, bool is_cql_event)
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{
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int mode = config_store.current_mode;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode =
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is_cql_event ? AUTO_PERFORMANCE_ON_LAP : AUTO_PERFORMANCE;
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if ((mode == AUTO_PERFORMANCE || mode == AUTO_PERFORMANCE_ON_LAP) &&
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mode != config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode) {
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mode = config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode;
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amd_pmf_set_automode(dev, mode, NULL);
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}
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dev_dbg(dev->dev, "updated CQL thermals\n");
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}
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static void amd_pmf_get_power_threshold(void)
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{
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config_store.transition[AUTO_TRANSITION_TO_QUIET].power_threshold =
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config_store.mode_set[AUTO_BALANCE].power_floor -
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config_store.transition[AUTO_TRANSITION_TO_QUIET].power_delta;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].power_threshold =
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config_store.mode_set[AUTO_BALANCE].power_floor -
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].power_delta;
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].power_threshold =
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config_store.mode_set[AUTO_QUIET].power_floor -
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].power_delta;
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].power_threshold =
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config_store.mode_set[AUTO_PERFORMANCE].power_floor -
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].power_delta;
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}
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static const char *state_as_str(unsigned int state)
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{
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switch (state) {
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case AUTO_QUIET:
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return "QUIET";
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case AUTO_BALANCE:
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return "BALANCED";
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case AUTO_PERFORMANCE_ON_LAP:
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return "ON_LAP";
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case AUTO_PERFORMANCE:
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return "PERFORMANCE";
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default:
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return "Unknown Auto Mode State";
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}
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}
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static void amd_pmf_load_defaults_auto_mode(struct amd_pmf_dev *dev)
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{
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struct apmf_auto_mode output;
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struct power_table_control *pwr_ctrl;
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int i;
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apmf_get_auto_mode_def(dev, &output);
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/* time constant */
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config_store.transition[AUTO_TRANSITION_TO_QUIET].time_constant =
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output.balanced_to_quiet;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].time_constant =
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output.balanced_to_perf;
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].time_constant =
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output.quiet_to_balanced;
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].time_constant =
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output.perf_to_balanced;
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/* power floor */
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config_store.mode_set[AUTO_QUIET].power_floor = output.pfloor_quiet;
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config_store.mode_set[AUTO_BALANCE].power_floor = output.pfloor_balanced;
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config_store.mode_set[AUTO_PERFORMANCE].power_floor = output.pfloor_perf;
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config_store.mode_set[AUTO_PERFORMANCE_ON_LAP].power_floor = output.pfloor_perf;
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/* Power delta for mode change */
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config_store.transition[AUTO_TRANSITION_TO_QUIET].power_delta =
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output.pd_balanced_to_quiet;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].power_delta =
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output.pd_balanced_to_perf;
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].power_delta =
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output.pd_quiet_to_balanced;
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].power_delta =
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output.pd_perf_to_balanced;
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/* Power threshold */
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amd_pmf_get_power_threshold();
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/* skin temperature limits */
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pwr_ctrl = &config_store.mode_set[AUTO_QUIET].power_control;
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pwr_ctrl->spl = output.spl_quiet;
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pwr_ctrl->sppt = output.sppt_quiet;
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pwr_ctrl->fppt = output.fppt_quiet;
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pwr_ctrl->sppt_apu_only = output.sppt_apu_only_quiet;
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pwr_ctrl->stt_min = output.stt_min_limit_quiet;
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pwr_ctrl->stt_skin_temp[STT_TEMP_APU] = output.stt_apu_quiet;
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pwr_ctrl->stt_skin_temp[STT_TEMP_HS2] = output.stt_hs2_quiet;
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pwr_ctrl = &config_store.mode_set[AUTO_BALANCE].power_control;
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pwr_ctrl->spl = output.spl_balanced;
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pwr_ctrl->sppt = output.sppt_balanced;
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pwr_ctrl->fppt = output.fppt_balanced;
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pwr_ctrl->sppt_apu_only = output.sppt_apu_only_balanced;
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pwr_ctrl->stt_min = output.stt_min_limit_balanced;
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pwr_ctrl->stt_skin_temp[STT_TEMP_APU] = output.stt_apu_balanced;
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pwr_ctrl->stt_skin_temp[STT_TEMP_HS2] = output.stt_hs2_balanced;
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pwr_ctrl = &config_store.mode_set[AUTO_PERFORMANCE].power_control;
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pwr_ctrl->spl = output.spl_perf;
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pwr_ctrl->sppt = output.sppt_perf;
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pwr_ctrl->fppt = output.fppt_perf;
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pwr_ctrl->sppt_apu_only = output.sppt_apu_only_perf;
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pwr_ctrl->stt_min = output.stt_min_limit_perf;
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pwr_ctrl->stt_skin_temp[STT_TEMP_APU] = output.stt_apu_perf;
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pwr_ctrl->stt_skin_temp[STT_TEMP_HS2] = output.stt_hs2_perf;
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pwr_ctrl = &config_store.mode_set[AUTO_PERFORMANCE_ON_LAP].power_control;
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pwr_ctrl->spl = output.spl_perf_on_lap;
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pwr_ctrl->sppt = output.sppt_perf_on_lap;
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pwr_ctrl->fppt = output.fppt_perf_on_lap;
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pwr_ctrl->sppt_apu_only = output.sppt_apu_only_perf_on_lap;
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pwr_ctrl->stt_min = output.stt_min_limit_perf_on_lap;
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pwr_ctrl->stt_skin_temp[STT_TEMP_APU] = output.stt_apu_perf_on_lap;
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pwr_ctrl->stt_skin_temp[STT_TEMP_HS2] = output.stt_hs2_perf_on_lap;
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/* Fan ID */
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config_store.mode_set[AUTO_QUIET].fan_control.fan_id = output.fan_id_quiet;
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config_store.mode_set[AUTO_BALANCE].fan_control.fan_id = output.fan_id_balanced;
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config_store.mode_set[AUTO_PERFORMANCE].fan_control.fan_id = output.fan_id_perf;
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config_store.mode_set[AUTO_PERFORMANCE_ON_LAP].fan_control.fan_id =
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output.fan_id_perf;
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config_store.transition[AUTO_TRANSITION_TO_QUIET].target_mode = AUTO_QUIET;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].target_mode =
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AUTO_PERFORMANCE;
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].target_mode =
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AUTO_BALANCE;
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].target_mode =
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AUTO_BALANCE;
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config_store.transition[AUTO_TRANSITION_TO_QUIET].shifting_up = false;
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config_store.transition[AUTO_TRANSITION_TO_PERFORMANCE].shifting_up = true;
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config_store.transition[AUTO_TRANSITION_FROM_QUIET_TO_BALANCE].shifting_up = true;
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config_store.transition[AUTO_TRANSITION_FROM_PERFORMANCE_TO_BALANCE].shifting_up =
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false;
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for (i = 0 ; i < AUTO_MODE_MAX ; i++) {
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if (config_store.mode_set[i].fan_control.fan_id == FAN_INDEX_AUTO)
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config_store.mode_set[i].fan_control.manual = false;
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else
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config_store.mode_set[i].fan_control.manual = true;
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}
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/* set to initial default values */
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config_store.current_mode = AUTO_BALANCE;
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dev->socket_power_history_idx = -1;
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}
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int amd_pmf_reset_amt(struct amd_pmf_dev *dev)
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{
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/*
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* OEM BIOS implementation guide says that if the auto mode is enabled
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* the platform_profile registration shall be done by the OEM driver.
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* There could be cases where both static slider and auto mode BIOS
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* functions are enabled, in that case enable static slider updates
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* only if it advertised as supported.
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*/
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if (is_apmf_func_supported(dev, APMF_FUNC_STATIC_SLIDER_GRANULAR)) {
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dev_dbg(dev->dev, "resetting AMT thermals\n");
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amd_pmf_set_sps_power_limits(dev);
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}
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return 0;
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}
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void amd_pmf_handle_amt(struct amd_pmf_dev *dev)
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{
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amd_pmf_set_automode(dev, config_store.current_mode, NULL);
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}
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void amd_pmf_deinit_auto_mode(struct amd_pmf_dev *dev)
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{
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cancel_delayed_work_sync(&dev->work_buffer);
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}
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void amd_pmf_init_auto_mode(struct amd_pmf_dev *dev)
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{
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amd_pmf_load_defaults_auto_mode(dev);
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amd_pmf_init_metrics_table(dev);
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}
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