drivers/net/wireless/intel/iwlwifi/dvm/tt.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
   5  *
   6  * Portions of this file are derived from the ipw3945 project, as well
   7  * as portions of the ieee80211 subsystem header files.
   8  *
   9  * Contact Information:
  10  *  Intel Linux Wireless <linuxwifi@intel.com>
  11  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  12  *****************************************************************************/
  13 #ifndef __iwl_tt_setting_h__
  14 #define __iwl_tt_setting_h__
  15
  16 #include "commands.h"
  17
  18 #define IWL_ABSOLUTE_ZERO               0
  19 #define IWL_ABSOLUTE_MAX                0xFFFFFFFF
  20 #define IWL_TT_INCREASE_MARGIN  5
  21 #define IWL_TT_CT_KILL_MARGIN   3
  22
  23 enum iwl_antenna_ok {
  24         IWL_ANT_OK_NONE,
  25         IWL_ANT_OK_SINGLE,
  26         IWL_ANT_OK_MULTI,
  27 };
  28
  29 /* Thermal Throttling State Machine states */
  30 enum  iwl_tt_state {
  31         IWL_TI_0,       /* normal temperature, system power state */
  32         IWL_TI_1,       /* high temperature detect, low power state */
  33         IWL_TI_2,       /* higher temperature detected, lower power state */
  34         IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
  35         IWL_TI_STATE_MAX
  36 };
  37
  38 /**
  39  * struct iwl_tt_restriction - Thermal Throttling restriction table
  40  * @tx_stream: number of tx stream allowed
  41  * @is_ht: ht enable/disable
  42  * @rx_stream: number of rx stream allowed
  43  *
  44  * This table is used by advance thermal throttling management
  45  * based on the current thermal throttling state, and determines
  46  * the number of tx/rx streams and the status of HT operation.
  47  */
  48 struct iwl_tt_restriction {
  49         enum iwl_antenna_ok tx_stream;
  50         enum iwl_antenna_ok rx_stream;
  51         bool is_ht;
  52 };
  53
  54 /**
  55  * struct iwl_tt_trans - Thermal Throttling transaction table
  56  * @next_state:  next thermal throttling mode
  57  * @tt_low: low temperature threshold to change state
  58  * @tt_high: high temperature threshold to change state
  59  *
  60  * This is used by the advanced thermal throttling algorithm
  61  * to determine the next thermal state to go based on the
  62  * current temperature.
  63  */
  64 struct iwl_tt_trans {
  65         enum iwl_tt_state next_state;
  66         u32 tt_low;
  67         u32 tt_high;
  68 };
  69
  70 /**
  71  * struct iwl_tt_mgnt - Thermal Throttling Management structure
  72  * @advanced_tt:    advanced thermal throttle required
  73  * @state:          current Thermal Throttling state
  74  * @tt_power_mode:  Thermal Throttling power mode index
  75  *                  being used to set power level when
  76  *                  when thermal throttling state != IWL_TI_0
  77  *                  the tt_power_mode should set to different
  78  *                  power mode based on the current tt state
  79  * @tt_previous_temperature: last measured temperature
  80  * @iwl_tt_restriction: ptr to restriction tbl, used by advance
  81  *                  thermal throttling to determine how many tx/rx streams
  82  *                  should be used in tt state; and can HT be enabled or not
  83  * @iwl_tt_trans: ptr to adv trans table, used by advance thermal throttling
  84  *                  state transaction
  85  * @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
  86  * @ct_kill_exit_tm: timer to exit thermal kill
  87  */
  88 struct iwl_tt_mgmt {
  89         enum iwl_tt_state state;
  90         bool advanced_tt;
  91         u8 tt_power_mode;
  92         bool ct_kill_toggle;
  93 #ifdef CONFIG_IWLWIFI_DEBUG
  94         s32 tt_previous_temp;
  95 #endif
  96         struct iwl_tt_restriction *restriction;
  97         struct iwl_tt_trans *transaction;
  98         struct timer_list ct_kill_exit_tm;
  99         struct timer_list ct_kill_waiting_tm;
 100 };
 101
 102 u8 iwl_tt_current_power_mode(struct iwl_priv *priv);
 103 bool iwl_tt_is_low_power_state(struct iwl_priv *priv);
 104 bool iwl_ht_enabled(struct iwl_priv *priv);
 105 enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
 106 enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
 107 void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
 108 void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
 109 void iwl_tt_handler(struct iwl_priv *priv);
 110 void iwl_tt_initialize(struct iwl_priv *priv);
 111 void iwl_tt_exit(struct iwl_priv *priv);
 112
 113 #endif  /* __iwl_tt_setting_h__ */