1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /******************************************************************************
4 * Copyright(c) 2007 - 2014, 2023-2024 Intel Corporation. All rights reserved.
6 * Portions of this file are derived from the ipw3945 project, as well
7 * as portions of the ieee80211 subsystem header files.
8 *****************************************************************************/
9 #ifndef __iwl_tt_setting_h__
10 #define __iwl_tt_setting_h__
14 #define IWL_ABSOLUTE_ZERO 0
15 #define IWL_ABSOLUTE_MAX 0xFFFFFFFF
16 #define IWL_TT_INCREASE_MARGIN 5
17 #define IWL_TT_CT_KILL_MARGIN 3
25 /* Thermal Throttling State Machine states */
27 IWL_TI_0, /* normal temperature, system power state */
28 IWL_TI_1, /* high temperature detect, low power state */
29 IWL_TI_2, /* higher temperature detected, lower power state */
30 IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
35 * struct iwl_tt_restriction - Thermal Throttling restriction table
36 * @tx_stream: number of tx stream allowed
37 * @is_ht: ht enable/disable
38 * @rx_stream: number of rx stream allowed
40 * This table is used by advance thermal throttling management
41 * based on the current thermal throttling state, and determines
42 * the number of tx/rx streams and the status of HT operation.
44 struct iwl_tt_restriction {
45 enum iwl_antenna_ok tx_stream;
46 enum iwl_antenna_ok rx_stream;
51 * struct iwl_tt_trans - Thermal Throttling transaction table
52 * @next_state: next thermal throttling mode
53 * @tt_low: low temperature threshold to change state
54 * @tt_high: high temperature threshold to change state
56 * This is used by the advanced thermal throttling algorithm
57 * to determine the next thermal state to go based on the
58 * current temperature.
61 enum iwl_tt_state next_state;
67 * struct iwl_tt_mgmt - Thermal Throttling Management structure
68 * @advanced_tt: advanced thermal throttle required
69 * @state: current Thermal Throttling state
70 * @tt_power_mode: Thermal Throttling power mode index
71 * being used to set power level when
72 * when thermal throttling state != IWL_TI_0
73 * the tt_power_mode should set to different
74 * power mode based on the current tt state
75 * @tt_previous_temp: last measured temperature
76 * @restriction: ptr to restriction tbl, used by advance
77 * thermal throttling to determine how many tx/rx streams
78 * should be used in tt state; and can HT be enabled or not
79 * @transaction: ptr to adv trans table, used by advance thermal throttling
81 * @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
82 * @ct_kill_exit_tm: timer to exit thermal kill
83 * @ct_kill_waiting_tm: timer to enter thermal kill
86 enum iwl_tt_state state;
90 #ifdef CONFIG_IWLWIFI_DEBUG
93 struct iwl_tt_restriction *restriction;
94 struct iwl_tt_trans *transaction;
95 struct timer_list ct_kill_exit_tm;
96 struct timer_list ct_kill_waiting_tm;
99 u8 iwl_tt_current_power_mode(struct iwl_priv *priv);
100 bool iwl_tt_is_low_power_state(struct iwl_priv *priv);
101 bool iwl_ht_enabled(struct iwl_priv *priv);
102 enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
103 enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
104 void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
105 void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
106 void iwl_tt_handler(struct iwl_priv *priv);
107 void iwl_tt_initialize(struct iwl_priv *priv);
108 void iwl_tt_exit(struct iwl_priv *priv);
110 #endif /* __iwl_tt_setting_h__ */