mirror of https://gitee.com/openkylin/linux.git
700 lines
22 KiB
C
700 lines
22 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2011 Intel Corporation. All rights reserved.
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*
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* Portions of this file are derived from the ipw3945 project, as well
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* as portions of the ieee80211 subsystem header files.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* 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, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* Intel Linux Wireless <ilw@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <net/mac80211.h>
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#include "iwl-eeprom.h"
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#include "iwl-dev.h"
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#include "iwl-core.h"
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#include "iwl-io.h"
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#include "iwl-commands.h"
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#include "iwl-debug.h"
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#include "iwl-agn-tt.h"
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/* default Thermal Throttling transaction table
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* Current state | Throttling Down | Throttling Up
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*=============================================================================
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* Condition Nxt State Condition Nxt State Condition Nxt State
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*-----------------------------------------------------------------------------
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* IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
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* IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
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* IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
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* IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
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*=============================================================================
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*/
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static const struct iwl_tt_trans tt_range_0[IWL_TI_STATE_MAX - 1] = {
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{IWL_TI_0, IWL_ABSOLUTE_ZERO, 104},
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{IWL_TI_1, 105, CT_KILL_THRESHOLD - 1},
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{IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
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};
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static const struct iwl_tt_trans tt_range_1[IWL_TI_STATE_MAX - 1] = {
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{IWL_TI_0, IWL_ABSOLUTE_ZERO, 95},
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{IWL_TI_2, 110, CT_KILL_THRESHOLD - 1},
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{IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
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};
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static const struct iwl_tt_trans tt_range_2[IWL_TI_STATE_MAX - 1] = {
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{IWL_TI_1, IWL_ABSOLUTE_ZERO, 100},
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{IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX},
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{IWL_TI_CT_KILL, CT_KILL_THRESHOLD, IWL_ABSOLUTE_MAX}
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};
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static const struct iwl_tt_trans tt_range_3[IWL_TI_STATE_MAX - 1] = {
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{IWL_TI_0, IWL_ABSOLUTE_ZERO, CT_KILL_EXIT_THRESHOLD},
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{IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX},
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{IWL_TI_CT_KILL, CT_KILL_EXIT_THRESHOLD + 1, IWL_ABSOLUTE_MAX}
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};
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/* Advance Thermal Throttling default restriction table */
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static const struct iwl_tt_restriction restriction_range[IWL_TI_STATE_MAX] = {
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{IWL_ANT_OK_MULTI, IWL_ANT_OK_MULTI, true },
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{IWL_ANT_OK_SINGLE, IWL_ANT_OK_MULTI, true },
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{IWL_ANT_OK_SINGLE, IWL_ANT_OK_SINGLE, false },
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{IWL_ANT_OK_NONE, IWL_ANT_OK_NONE, false }
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};
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bool iwl_tt_is_low_power_state(struct iwl_priv *priv)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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if (tt->state >= IWL_TI_1)
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return true;
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return false;
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}
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u8 iwl_tt_current_power_mode(struct iwl_priv *priv)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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return tt->tt_power_mode;
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}
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bool iwl_ht_enabled(struct iwl_priv *priv)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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struct iwl_tt_restriction *restriction;
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if (!priv->thermal_throttle.advanced_tt)
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return true;
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restriction = tt->restriction + tt->state;
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return restriction->is_ht;
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}
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static bool iwl_within_ct_kill_margin(struct iwl_priv *priv)
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{
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s32 temp = priv->temperature; /* degrees CELSIUS except specified */
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bool within_margin = false;
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if (priv->cfg->base_params->temperature_kelvin)
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temp = KELVIN_TO_CELSIUS(priv->temperature);
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if (!priv->thermal_throttle.advanced_tt)
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within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
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CT_KILL_THRESHOLD_LEGACY) ? true : false;
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else
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within_margin = ((temp + IWL_TT_CT_KILL_MARGIN) >=
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CT_KILL_THRESHOLD) ? true : false;
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return within_margin;
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}
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bool iwl_check_for_ct_kill(struct iwl_priv *priv)
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{
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bool is_ct_kill = false;
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if (iwl_within_ct_kill_margin(priv)) {
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iwl_tt_enter_ct_kill(priv);
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is_ct_kill = true;
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}
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return is_ct_kill;
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}
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enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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struct iwl_tt_restriction *restriction;
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if (!priv->thermal_throttle.advanced_tt)
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return IWL_ANT_OK_MULTI;
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restriction = tt->restriction + tt->state;
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return restriction->tx_stream;
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}
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enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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struct iwl_tt_restriction *restriction;
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if (!priv->thermal_throttle.advanced_tt)
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return IWL_ANT_OK_MULTI;
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restriction = tt->restriction + tt->state;
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return restriction->rx_stream;
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}
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#define CT_KILL_EXIT_DURATION (5) /* 5 seconds duration */
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#define CT_KILL_WAITING_DURATION (300) /* 300ms duration */
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/*
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* toggle the bit to wake up uCode and check the temperature
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* if the temperature is below CT, uCode will stay awake and send card
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* state notification with CT_KILL bit clear to inform Thermal Throttling
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* Management to change state. Otherwise, uCode will go back to sleep
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* without doing anything, driver should continue the 5 seconds timer
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* to wake up uCode for temperature check until temperature drop below CT
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*/
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static void iwl_tt_check_exit_ct_kill(unsigned long data)
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{
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struct iwl_priv *priv = (struct iwl_priv *)data;
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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unsigned long flags;
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if (test_bit(STATUS_EXIT_PENDING, &priv->status))
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return;
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if (tt->state == IWL_TI_CT_KILL) {
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if (priv->thermal_throttle.ct_kill_toggle) {
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iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
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CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
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priv->thermal_throttle.ct_kill_toggle = false;
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} else {
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iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
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CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
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priv->thermal_throttle.ct_kill_toggle = true;
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}
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iwl_read32(priv, CSR_UCODE_DRV_GP1);
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spin_lock_irqsave(&priv->reg_lock, flags);
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if (!iwl_grab_nic_access(priv))
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iwl_release_nic_access(priv);
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spin_unlock_irqrestore(&priv->reg_lock, flags);
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/* Reschedule the ct_kill timer to occur in
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* CT_KILL_EXIT_DURATION seconds to ensure we get a
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* thermal update */
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IWL_DEBUG_POWER(priv, "schedule ct_kill exit timer\n");
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mod_timer(&priv->thermal_throttle.ct_kill_exit_tm,
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jiffies + CT_KILL_EXIT_DURATION * HZ);
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}
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}
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static void iwl_perform_ct_kill_task(struct iwl_priv *priv,
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bool stop)
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{
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if (stop) {
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IWL_DEBUG_POWER(priv, "Stop all queues\n");
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if (priv->mac80211_registered)
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ieee80211_stop_queues(priv->hw);
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IWL_DEBUG_POWER(priv,
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"Schedule 5 seconds CT_KILL Timer\n");
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mod_timer(&priv->thermal_throttle.ct_kill_exit_tm,
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jiffies + CT_KILL_EXIT_DURATION * HZ);
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} else {
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IWL_DEBUG_POWER(priv, "Wake all queues\n");
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if (priv->mac80211_registered)
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ieee80211_wake_queues(priv->hw);
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}
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}
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static void iwl_tt_ready_for_ct_kill(unsigned long data)
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{
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struct iwl_priv *priv = (struct iwl_priv *)data;
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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if (test_bit(STATUS_EXIT_PENDING, &priv->status))
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return;
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/* temperature timer expired, ready to go into CT_KILL state */
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if (tt->state != IWL_TI_CT_KILL) {
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IWL_DEBUG_POWER(priv, "entering CT_KILL state when "
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"temperature timer expired\n");
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tt->state = IWL_TI_CT_KILL;
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set_bit(STATUS_CT_KILL, &priv->status);
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iwl_perform_ct_kill_task(priv, true);
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}
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}
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static void iwl_prepare_ct_kill_task(struct iwl_priv *priv)
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{
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IWL_DEBUG_POWER(priv, "Prepare to enter IWL_TI_CT_KILL\n");
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/* make request to retrieve statistics information */
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iwl_send_statistics_request(priv, CMD_SYNC, false);
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/* Reschedule the ct_kill wait timer */
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mod_timer(&priv->thermal_throttle.ct_kill_waiting_tm,
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jiffies + msecs_to_jiffies(CT_KILL_WAITING_DURATION));
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}
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#define IWL_MINIMAL_POWER_THRESHOLD (CT_KILL_THRESHOLD_LEGACY)
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#define IWL_REDUCED_PERFORMANCE_THRESHOLD_2 (100)
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#define IWL_REDUCED_PERFORMANCE_THRESHOLD_1 (90)
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/*
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* Legacy thermal throttling
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* 1) Avoid NIC destruction due to high temperatures
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* Chip will identify dangerously high temperatures that can
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* harm the device and will power down
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* 2) Avoid the NIC power down due to high temperature
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* Throttle early enough to lower the power consumption before
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* drastic steps are needed
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*/
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static void iwl_legacy_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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enum iwl_tt_state old_state;
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#ifdef CONFIG_IWLWIFI_DEBUG
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if ((tt->tt_previous_temp) &&
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(temp > tt->tt_previous_temp) &&
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((temp - tt->tt_previous_temp) >
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IWL_TT_INCREASE_MARGIN)) {
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IWL_DEBUG_POWER(priv,
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"Temperature increase %d degree Celsius\n",
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(temp - tt->tt_previous_temp));
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}
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#endif
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old_state = tt->state;
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/* in Celsius */
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if (temp >= IWL_MINIMAL_POWER_THRESHOLD)
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tt->state = IWL_TI_CT_KILL;
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else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_2)
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tt->state = IWL_TI_2;
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else if (temp >= IWL_REDUCED_PERFORMANCE_THRESHOLD_1)
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tt->state = IWL_TI_1;
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else
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tt->state = IWL_TI_0;
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#ifdef CONFIG_IWLWIFI_DEBUG
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tt->tt_previous_temp = temp;
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#endif
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/* stop ct_kill_waiting_tm timer */
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del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
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if (tt->state != old_state) {
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switch (tt->state) {
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case IWL_TI_0:
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/*
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* When the system is ready to go back to IWL_TI_0
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* we only have to call iwl_power_update_mode() to
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* do so.
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*/
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break;
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case IWL_TI_1:
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tt->tt_power_mode = IWL_POWER_INDEX_3;
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break;
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case IWL_TI_2:
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tt->tt_power_mode = IWL_POWER_INDEX_4;
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break;
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default:
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tt->tt_power_mode = IWL_POWER_INDEX_5;
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break;
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}
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mutex_lock(&priv->mutex);
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if (old_state == IWL_TI_CT_KILL)
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clear_bit(STATUS_CT_KILL, &priv->status);
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if (tt->state != IWL_TI_CT_KILL &&
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iwl_power_update_mode(priv, true)) {
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/* TT state not updated
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* try again during next temperature read
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*/
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if (old_state == IWL_TI_CT_KILL)
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set_bit(STATUS_CT_KILL, &priv->status);
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tt->state = old_state;
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IWL_ERR(priv, "Cannot update power mode, "
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"TT state not updated\n");
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} else {
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if (tt->state == IWL_TI_CT_KILL) {
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if (force) {
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set_bit(STATUS_CT_KILL, &priv->status);
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iwl_perform_ct_kill_task(priv, true);
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} else {
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iwl_prepare_ct_kill_task(priv);
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tt->state = old_state;
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}
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} else if (old_state == IWL_TI_CT_KILL &&
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tt->state != IWL_TI_CT_KILL)
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iwl_perform_ct_kill_task(priv, false);
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IWL_DEBUG_POWER(priv, "Temperature state changed %u\n",
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tt->state);
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IWL_DEBUG_POWER(priv, "Power Index change to %u\n",
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tt->tt_power_mode);
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}
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mutex_unlock(&priv->mutex);
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}
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}
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/*
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* Advance thermal throttling
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* 1) Avoid NIC destruction due to high temperatures
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* Chip will identify dangerously high temperatures that can
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* harm the device and will power down
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* 2) Avoid the NIC power down due to high temperature
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* Throttle early enough to lower the power consumption before
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* drastic steps are needed
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* Actions include relaxing the power down sleep thresholds and
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* decreasing the number of TX streams
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* 3) Avoid throughput performance impact as much as possible
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*
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*=============================================================================
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* Condition Nxt State Condition Nxt State Condition Nxt State
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*-----------------------------------------------------------------------------
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* IWL_TI_0 T >= 114 CT_KILL 114>T>=105 TI_1 N/A N/A
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* IWL_TI_1 T >= 114 CT_KILL 114>T>=110 TI_2 T<=95 TI_0
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* IWL_TI_2 T >= 114 CT_KILL T<=100 TI_1
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* IWL_CT_KILL N/A N/A N/A N/A T<=95 TI_0
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*=============================================================================
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*/
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static void iwl_advance_tt_handler(struct iwl_priv *priv, s32 temp, bool force)
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{
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struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
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int i;
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bool changed = false;
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enum iwl_tt_state old_state;
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struct iwl_tt_trans *transaction;
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old_state = tt->state;
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for (i = 0; i < IWL_TI_STATE_MAX - 1; i++) {
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/* based on the current TT state,
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* find the curresponding transaction table
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* each table has (IWL_TI_STATE_MAX - 1) entries
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* tt->transaction + ((old_state * (IWL_TI_STATE_MAX - 1))
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* will advance to the correct table.
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* then based on the current temperature
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* find the next state need to transaction to
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* go through all the possible (IWL_TI_STATE_MAX - 1) entries
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* in the current table to see if transaction is needed
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*/
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transaction = tt->transaction +
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((old_state * (IWL_TI_STATE_MAX - 1)) + i);
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if (temp >= transaction->tt_low &&
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temp <= transaction->tt_high) {
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#ifdef CONFIG_IWLWIFI_DEBUG
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if ((tt->tt_previous_temp) &&
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(temp > tt->tt_previous_temp) &&
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((temp - tt->tt_previous_temp) >
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IWL_TT_INCREASE_MARGIN)) {
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IWL_DEBUG_POWER(priv,
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"Temperature increase %d "
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"degree Celsius\n",
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(temp - tt->tt_previous_temp));
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}
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tt->tt_previous_temp = temp;
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#endif
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if (old_state !=
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transaction->next_state) {
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changed = true;
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tt->state =
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transaction->next_state;
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}
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break;
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}
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}
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/* stop ct_kill_waiting_tm timer */
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del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
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if (changed) {
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if (tt->state >= IWL_TI_1) {
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/* force PI = IWL_POWER_INDEX_5 in the case of TI > 0 */
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tt->tt_power_mode = IWL_POWER_INDEX_5;
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if (!iwl_ht_enabled(priv)) {
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struct iwl_rxon_context *ctx;
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for_each_context(priv, ctx) {
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struct iwl_rxon_cmd *rxon;
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rxon = &ctx->staging;
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/* disable HT */
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rxon->flags &= ~(
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RXON_FLG_CHANNEL_MODE_MSK |
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RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK |
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RXON_FLG_HT40_PROT_MSK |
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RXON_FLG_HT_PROT_MSK);
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}
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} else {
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/* check HT capability and set
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* according to the system HT capability
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* in case get disabled before */
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iwl_set_rxon_ht(priv, &priv->current_ht_config);
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}
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} else {
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/*
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* restore system power setting -- it will be
|
|
* recalculated automatically.
|
|
*/
|
|
|
|
/* check HT capability and set
|
|
* according to the system HT capability
|
|
* in case get disabled before */
|
|
iwl_set_rxon_ht(priv, &priv->current_ht_config);
|
|
}
|
|
mutex_lock(&priv->mutex);
|
|
if (old_state == IWL_TI_CT_KILL)
|
|
clear_bit(STATUS_CT_KILL, &priv->status);
|
|
if (tt->state != IWL_TI_CT_KILL &&
|
|
iwl_power_update_mode(priv, true)) {
|
|
/* TT state not updated
|
|
* try again during next temperature read
|
|
*/
|
|
IWL_ERR(priv, "Cannot update power mode, "
|
|
"TT state not updated\n");
|
|
if (old_state == IWL_TI_CT_KILL)
|
|
set_bit(STATUS_CT_KILL, &priv->status);
|
|
tt->state = old_state;
|
|
} else {
|
|
IWL_DEBUG_POWER(priv,
|
|
"Thermal Throttling to new state: %u\n",
|
|
tt->state);
|
|
if (old_state != IWL_TI_CT_KILL &&
|
|
tt->state == IWL_TI_CT_KILL) {
|
|
if (force) {
|
|
IWL_DEBUG_POWER(priv,
|
|
"Enter IWL_TI_CT_KILL\n");
|
|
set_bit(STATUS_CT_KILL, &priv->status);
|
|
iwl_perform_ct_kill_task(priv, true);
|
|
} else {
|
|
iwl_prepare_ct_kill_task(priv);
|
|
tt->state = old_state;
|
|
}
|
|
} else if (old_state == IWL_TI_CT_KILL &&
|
|
tt->state != IWL_TI_CT_KILL) {
|
|
IWL_DEBUG_POWER(priv, "Exit IWL_TI_CT_KILL\n");
|
|
iwl_perform_ct_kill_task(priv, false);
|
|
}
|
|
}
|
|
mutex_unlock(&priv->mutex);
|
|
}
|
|
}
|
|
|
|
/* Card State Notification indicated reach critical temperature
|
|
* if PSP not enable, no Thermal Throttling function will be performed
|
|
* just set the GP1 bit to acknowledge the event
|
|
* otherwise, go into IWL_TI_CT_KILL state
|
|
* since Card State Notification will not provide any temperature reading
|
|
* for Legacy mode
|
|
* so just pass the CT_KILL temperature to iwl_legacy_tt_handler()
|
|
* for advance mode
|
|
* pass CT_KILL_THRESHOLD+1 to make sure move into IWL_TI_CT_KILL state
|
|
*/
|
|
static void iwl_bg_ct_enter(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv, ct_enter);
|
|
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
if (!iwl_is_ready(priv))
|
|
return;
|
|
|
|
if (tt->state != IWL_TI_CT_KILL) {
|
|
IWL_ERR(priv, "Device reached critical temperature "
|
|
"- ucode going to sleep!\n");
|
|
if (!priv->thermal_throttle.advanced_tt)
|
|
iwl_legacy_tt_handler(priv,
|
|
IWL_MINIMAL_POWER_THRESHOLD,
|
|
true);
|
|
else
|
|
iwl_advance_tt_handler(priv,
|
|
CT_KILL_THRESHOLD + 1, true);
|
|
}
|
|
}
|
|
|
|
/* Card State Notification indicated out of critical temperature
|
|
* since Card State Notification will not provide any temperature reading
|
|
* so pass the IWL_REDUCED_PERFORMANCE_THRESHOLD_2 temperature
|
|
* to iwl_legacy_tt_handler() to get out of IWL_CT_KILL state
|
|
*/
|
|
static void iwl_bg_ct_exit(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv, ct_exit);
|
|
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
if (!iwl_is_ready(priv))
|
|
return;
|
|
|
|
/* stop ct_kill_exit_tm timer */
|
|
del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
|
|
|
|
if (tt->state == IWL_TI_CT_KILL) {
|
|
IWL_ERR(priv,
|
|
"Device temperature below critical"
|
|
"- ucode awake!\n");
|
|
/*
|
|
* exit from CT_KILL state
|
|
* reset the current temperature reading
|
|
*/
|
|
priv->temperature = 0;
|
|
if (!priv->thermal_throttle.advanced_tt)
|
|
iwl_legacy_tt_handler(priv,
|
|
IWL_REDUCED_PERFORMANCE_THRESHOLD_2,
|
|
true);
|
|
else
|
|
iwl_advance_tt_handler(priv, CT_KILL_EXIT_THRESHOLD,
|
|
true);
|
|
}
|
|
}
|
|
|
|
void iwl_tt_enter_ct_kill(struct iwl_priv *priv)
|
|
{
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
IWL_DEBUG_POWER(priv, "Queueing critical temperature enter.\n");
|
|
queue_work(priv->workqueue, &priv->ct_enter);
|
|
}
|
|
|
|
void iwl_tt_exit_ct_kill(struct iwl_priv *priv)
|
|
{
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
IWL_DEBUG_POWER(priv, "Queueing critical temperature exit.\n");
|
|
queue_work(priv->workqueue, &priv->ct_exit);
|
|
}
|
|
|
|
static void iwl_bg_tt_work(struct work_struct *work)
|
|
{
|
|
struct iwl_priv *priv = container_of(work, struct iwl_priv, tt_work);
|
|
s32 temp = priv->temperature; /* degrees CELSIUS except specified */
|
|
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
if (priv->cfg->base_params->temperature_kelvin)
|
|
temp = KELVIN_TO_CELSIUS(priv->temperature);
|
|
|
|
if (!priv->thermal_throttle.advanced_tt)
|
|
iwl_legacy_tt_handler(priv, temp, false);
|
|
else
|
|
iwl_advance_tt_handler(priv, temp, false);
|
|
}
|
|
|
|
void iwl_tt_handler(struct iwl_priv *priv)
|
|
{
|
|
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
|
|
return;
|
|
|
|
IWL_DEBUG_POWER(priv, "Queueing thermal throttling work.\n");
|
|
queue_work(priv->workqueue, &priv->tt_work);
|
|
}
|
|
|
|
/* Thermal throttling initialization
|
|
* For advance thermal throttling:
|
|
* Initialize Thermal Index and temperature threshold table
|
|
* Initialize thermal throttling restriction table
|
|
*/
|
|
void iwl_tt_initialize(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
|
|
int size = sizeof(struct iwl_tt_trans) * (IWL_TI_STATE_MAX - 1);
|
|
struct iwl_tt_trans *transaction;
|
|
|
|
IWL_DEBUG_POWER(priv, "Initialize Thermal Throttling\n");
|
|
|
|
memset(tt, 0, sizeof(struct iwl_tt_mgmt));
|
|
|
|
tt->state = IWL_TI_0;
|
|
init_timer(&priv->thermal_throttle.ct_kill_exit_tm);
|
|
priv->thermal_throttle.ct_kill_exit_tm.data = (unsigned long)priv;
|
|
priv->thermal_throttle.ct_kill_exit_tm.function =
|
|
iwl_tt_check_exit_ct_kill;
|
|
init_timer(&priv->thermal_throttle.ct_kill_waiting_tm);
|
|
priv->thermal_throttle.ct_kill_waiting_tm.data =
|
|
(unsigned long)priv;
|
|
priv->thermal_throttle.ct_kill_waiting_tm.function =
|
|
iwl_tt_ready_for_ct_kill;
|
|
/* setup deferred ct kill work */
|
|
INIT_WORK(&priv->tt_work, iwl_bg_tt_work);
|
|
INIT_WORK(&priv->ct_enter, iwl_bg_ct_enter);
|
|
INIT_WORK(&priv->ct_exit, iwl_bg_ct_exit);
|
|
|
|
if (priv->cfg->base_params->adv_thermal_throttle) {
|
|
IWL_DEBUG_POWER(priv, "Advanced Thermal Throttling\n");
|
|
tt->restriction = kzalloc(sizeof(struct iwl_tt_restriction) *
|
|
IWL_TI_STATE_MAX, GFP_KERNEL);
|
|
tt->transaction = kzalloc(sizeof(struct iwl_tt_trans) *
|
|
IWL_TI_STATE_MAX * (IWL_TI_STATE_MAX - 1),
|
|
GFP_KERNEL);
|
|
if (!tt->restriction || !tt->transaction) {
|
|
IWL_ERR(priv, "Fallback to Legacy Throttling\n");
|
|
priv->thermal_throttle.advanced_tt = false;
|
|
kfree(tt->restriction);
|
|
tt->restriction = NULL;
|
|
kfree(tt->transaction);
|
|
tt->transaction = NULL;
|
|
} else {
|
|
transaction = tt->transaction +
|
|
(IWL_TI_0 * (IWL_TI_STATE_MAX - 1));
|
|
memcpy(transaction, &tt_range_0[0], size);
|
|
transaction = tt->transaction +
|
|
(IWL_TI_1 * (IWL_TI_STATE_MAX - 1));
|
|
memcpy(transaction, &tt_range_1[0], size);
|
|
transaction = tt->transaction +
|
|
(IWL_TI_2 * (IWL_TI_STATE_MAX - 1));
|
|
memcpy(transaction, &tt_range_2[0], size);
|
|
transaction = tt->transaction +
|
|
(IWL_TI_CT_KILL * (IWL_TI_STATE_MAX - 1));
|
|
memcpy(transaction, &tt_range_3[0], size);
|
|
size = sizeof(struct iwl_tt_restriction) *
|
|
IWL_TI_STATE_MAX;
|
|
memcpy(tt->restriction,
|
|
&restriction_range[0], size);
|
|
priv->thermal_throttle.advanced_tt = true;
|
|
}
|
|
} else {
|
|
IWL_DEBUG_POWER(priv, "Legacy Thermal Throttling\n");
|
|
priv->thermal_throttle.advanced_tt = false;
|
|
}
|
|
}
|
|
|
|
/* cleanup thermal throttling management related memory and timer */
|
|
void iwl_tt_exit(struct iwl_priv *priv)
|
|
{
|
|
struct iwl_tt_mgmt *tt = &priv->thermal_throttle;
|
|
|
|
/* stop ct_kill_exit_tm timer if activated */
|
|
del_timer_sync(&priv->thermal_throttle.ct_kill_exit_tm);
|
|
/* stop ct_kill_waiting_tm timer if activated */
|
|
del_timer_sync(&priv->thermal_throttle.ct_kill_waiting_tm);
|
|
cancel_work_sync(&priv->tt_work);
|
|
cancel_work_sync(&priv->ct_enter);
|
|
cancel_work_sync(&priv->ct_exit);
|
|
|
|
if (priv->thermal_throttle.advanced_tt) {
|
|
/* free advance thermal throttling memory */
|
|
kfree(tt->restriction);
|
|
tt->restriction = NULL;
|
|
kfree(tt->transaction);
|
|
tt->transaction = NULL;
|
|
}
|
|
}
|