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Part 1 of Thermal Throttling Management - Thermal Throttling feature is used to put NIC into low power state when driver detect the Radio temperature reach pre-defined threshold Two Thermal Throttling Management Methods; this patch introduce the Legacy Thermal Management: IWL_TI_0: normal temperature, system power state IWL_TI_1: high temperature detect, low power state IWL_TI_2: higher temperature detected, lower power state IWL_TI_CT_KILL: critical temperature detected, lowest power state Once get into CT_KILL state, uCode go into sleep, driver will stop all the active queues, then move to IWL_TI_CT_KILL state; also set up 5 seconds timer to toggle CSR flag, uCode wake up upon CSR flag change, then measure the temperature. If temperature is above CT_KILL exit threshold, uCode go backto sleep; if temperature is below CT_KILL exit threshold, uCode send Card State Notification response with appropriate CT_KILL status flag, and uCode remain awake, Driver receive Card State Notification Response and update the card temperature to the CT_KILL exit threshold. Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: Reinette Chatre <reinette.chatre@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
111 lines
3.7 KiB
C
111 lines
3.7 KiB
C
/******************************************************************************
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*
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* Copyright(c) 2007 - 2009 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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#ifndef __iwl_power_setting_h__
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#define __iwl_power_setting_h__
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#include <net/mac80211.h>
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#include "iwl-commands.h"
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struct iwl_priv;
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#define IWL_TT_INCREASE_MARGIN 5
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/* Thermal Throttling State Machine states */
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enum iwl_tt_state {
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IWL_TI_0, /* normal temperature, system power state */
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IWL_TI_1, /* high temperature detect, low power state */
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IWL_TI_2, /* higher temperature detected, lower power state */
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IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
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IWL_TI_STATE_MAX
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};
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/**
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* struct iwl_tt_mgnt - Thermal Throttling Management structure
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* @state: current Thermal Throttling state
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* @tt_power_mode: Thermal Throttling power mode index
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* being used to set power level when
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* when thermal throttling state != IWL_TI_0
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* the tt_power_mode should set to different
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* power mode based on the current tt state
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* @sys_power_mode: previous system power mode
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* before transition into TT state
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* @tt_previous_temperature: last measured temperature
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*/
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struct iwl_tt_mgmt {
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enum iwl_tt_state state;
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u8 tt_power_mode;
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u8 sys_power_mode;
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#ifdef CONFIG_IWLWIFI_DEBUG
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s32 tt_previous_temp;
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#endif
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};
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enum {
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IWL_POWER_MODE_CAM, /* Continuously Aware Mode, always on */
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IWL_POWER_INDEX_1,
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IWL_POWER_INDEX_2,
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IWL_POWER_INDEX_3,
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IWL_POWER_INDEX_4,
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IWL_POWER_INDEX_5,
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IWL_POWER_NUM
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};
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/* Power management (not Tx power) structures */
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struct iwl_power_vec_entry {
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struct iwl_powertable_cmd cmd;
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u8 no_dtim;
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};
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struct iwl_power_mgr {
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struct iwl_power_vec_entry pwr_range_0[IWL_POWER_NUM];
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struct iwl_power_vec_entry pwr_range_1[IWL_POWER_NUM];
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struct iwl_power_vec_entry pwr_range_2[IWL_POWER_NUM];
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u32 dtim_period;
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/* final power level that used to calculate final power command */
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u8 power_mode;
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u8 user_power_setting; /* set by user through sysfs */
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u8 power_disabled; /* set by mac80211's CONF_PS */
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struct iwl_tt_mgmt tt; /* Thermal Throttling Management */
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bool ct_kill_toggle; /* use to toggle the CSR bit when
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* checking uCode temperature
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*/
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struct timer_list ct_kill_exit_tm;
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};
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int iwl_power_update_mode(struct iwl_priv *priv, bool force);
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int iwl_power_set_user_mode(struct iwl_priv *priv, u16 mode);
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void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
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void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
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void iwl_tt_handler(struct iwl_priv *priv);
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void iwl_tt_initialize(struct iwl_priv *priv);
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void iwl_tt_exit(struct iwl_priv *priv);
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void iwl_power_initialize(struct iwl_priv *priv);
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#endif /* __iwl_power_setting_h__ */
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