1 /******************************************************************************
3 * Copyright(c) 2007 - 2014 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * The full GNU General Public License is included in this distribution in the
18 * file called LICENSE.
20 * Contact Information:
21 * Intel Linux Wireless <linuxwifi@intel.com>
22 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
23 *****************************************************************************/
24 #ifndef __iwl_tt_setting_h__
25 #define __iwl_tt_setting_h__
29 #define IWL_ABSOLUTE_ZERO 0
30 #define IWL_ABSOLUTE_MAX 0xFFFFFFFF
31 #define IWL_TT_INCREASE_MARGIN 5
32 #define IWL_TT_CT_KILL_MARGIN 3
40 /* Thermal Throttling State Machine states */
42 IWL_TI_0, /* normal temperature, system power state */
43 IWL_TI_1, /* high temperature detect, low power state */
44 IWL_TI_2, /* higher temperature detected, lower power state */
45 IWL_TI_CT_KILL, /* critical temperature detected, lowest power state */
50 * struct iwl_tt_restriction - Thermal Throttling restriction table
51 * @tx_stream: number of tx stream allowed
52 * @is_ht: ht enable/disable
53 * @rx_stream: number of rx stream allowed
55 * This table is used by advance thermal throttling management
56 * based on the current thermal throttling state, and determines
57 * the number of tx/rx streams and the status of HT operation.
59 struct iwl_tt_restriction {
60 enum iwl_antenna_ok tx_stream;
61 enum iwl_antenna_ok rx_stream;
66 * struct iwl_tt_trans - Thermal Throttling transaction table
67 * @next_state: next thermal throttling mode
68 * @tt_low: low temperature threshold to change state
69 * @tt_high: high temperature threshold to change state
71 * This is used by the advanced thermal throttling algorithm
72 * to determine the next thermal state to go based on the
73 * current temperature.
76 enum iwl_tt_state next_state;
82 * struct iwl_tt_mgnt - Thermal Throttling Management structure
83 * @advanced_tt: advanced thermal throttle required
84 * @state: current Thermal Throttling state
85 * @tt_power_mode: Thermal Throttling power mode index
86 * being used to set power level when
87 * when thermal throttling state != IWL_TI_0
88 * the tt_power_mode should set to different
89 * power mode based on the current tt state
90 * @tt_previous_temperature: last measured temperature
91 * @iwl_tt_restriction: ptr to restriction tbl, used by advance
92 * thermal throttling to determine how many tx/rx streams
93 * should be used in tt state; and can HT be enabled or not
94 * @iwl_tt_trans: ptr to adv trans table, used by advance thermal throttling
96 * @ct_kill_toggle: used to toggle the CSR bit when checking uCode temperature
97 * @ct_kill_exit_tm: timer to exit thermal kill
100 enum iwl_tt_state state;
104 #ifdef CONFIG_IWLWIFI_DEBUG
105 s32 tt_previous_temp;
107 struct iwl_tt_restriction *restriction;
108 struct iwl_tt_trans *transaction;
109 struct timer_list ct_kill_exit_tm;
110 struct timer_list ct_kill_waiting_tm;
113 u8 iwl_tt_current_power_mode(struct iwl_priv *priv);
114 bool iwl_tt_is_low_power_state(struct iwl_priv *priv);
115 bool iwl_ht_enabled(struct iwl_priv *priv);
116 enum iwl_antenna_ok iwl_tx_ant_restriction(struct iwl_priv *priv);
117 enum iwl_antenna_ok iwl_rx_ant_restriction(struct iwl_priv *priv);
118 void iwl_tt_enter_ct_kill(struct iwl_priv *priv);
119 void iwl_tt_exit_ct_kill(struct iwl_priv *priv);
120 void iwl_tt_handler(struct iwl_priv *priv);
121 void iwl_tt_initialize(struct iwl_priv *priv);
122 void iwl_tt_exit(struct iwl_priv *priv);
124 #endif /* __iwl_tt_setting_h__ */