1 /* 2 * Copyright (C) 2010 Bruno Randolf <br1@einfach.org> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 #ifndef ANI_H 17 #define ANI_H 18 19 #include "../ath.h" 20 21 enum ath5k_phy_error_code; 22 23 /* these thresholds are relative to the ATH5K_ANI_LISTEN_PERIOD */ 24 #define ATH5K_ANI_LISTEN_PERIOD 100 25 #define ATH5K_ANI_OFDM_TRIG_HIGH 500 26 #define ATH5K_ANI_OFDM_TRIG_LOW 200 27 #define ATH5K_ANI_CCK_TRIG_HIGH 200 28 #define ATH5K_ANI_CCK_TRIG_LOW 100 29 30 /* average beacon RSSI thresholds */ 31 #define ATH5K_ANI_RSSI_THR_HIGH 40 32 #define ATH5K_ANI_RSSI_THR_LOW 7 33 34 /* maximum available levels */ 35 #define ATH5K_ANI_MAX_FIRSTEP_LVL 2 36 #define ATH5K_ANI_MAX_NOISE_IMM_LVL 1 37 38 39 /** 40 * enum ath5k_ani_mode - mode for ANI / noise sensitivity 41 * 42 * @ATH5K_ANI_MODE_OFF: Turn ANI off. This can be useful to just stop the ANI 43 * algorithm after it has been on auto mode. 44 * ATH5K_ANI_MODE_MANUAL_LOW: Manually set all immunity parameters to low, 45 * maximizing sensitivity. ANI will not run. 46 * ATH5K_ANI_MODE_MANUAL_HIGH: Manually set all immunity parameters to high, 47 * minimizing sensitivity. ANI will not run. 48 * ATH5K_ANI_MODE_AUTO: Automatically control immunity parameters based on the 49 * amount of OFDM and CCK frame errors (default). 50 */ 51 enum ath5k_ani_mode { 52 ATH5K_ANI_MODE_OFF = 0, 53 ATH5K_ANI_MODE_MANUAL_LOW = 1, 54 ATH5K_ANI_MODE_MANUAL_HIGH = 2, 55 ATH5K_ANI_MODE_AUTO = 3 56 }; 57 58 59 /** 60 * struct ath5k_ani_state - ANI state and associated counters 61 * 62 * @max_spur_level: the maximum spur level is chip dependent 63 */ 64 struct ath5k_ani_state { 65 enum ath5k_ani_mode ani_mode; 66 67 /* state */ 68 int noise_imm_level; 69 int spur_level; 70 int firstep_level; 71 bool ofdm_weak_sig; 72 bool cck_weak_sig; 73 74 int max_spur_level; 75 76 /* used by the algorithm */ 77 unsigned int listen_time; 78 unsigned int ofdm_errors; 79 unsigned int cck_errors; 80 81 /* debug/statistics only: numbers from last ANI calibration */ 82 struct ath_cycle_counters last_cc; 83 unsigned int last_listen; 84 unsigned int last_ofdm_errors; 85 unsigned int last_cck_errors; 86 unsigned int sum_ofdm_errors; 87 unsigned int sum_cck_errors; 88 }; 89 90 void ath5k_ani_init(struct ath5k_hw *ah, enum ath5k_ani_mode mode); 91 void ath5k_ani_mib_intr(struct ath5k_hw *ah); 92 void ath5k_ani_calibration(struct ath5k_hw *ah); 93 void ath5k_ani_phy_error_report(struct ath5k_hw *ah, 94 enum ath5k_phy_error_code phyerr); 95 96 /* for manual control */ 97 void ath5k_ani_set_noise_immunity_level(struct ath5k_hw *ah, int level); 98 void ath5k_ani_set_spur_immunity_level(struct ath5k_hw *ah, int level); 99 void ath5k_ani_set_firstep_level(struct ath5k_hw *ah, int level); 100 void ath5k_ani_set_ofdm_weak_signal_detection(struct ath5k_hw *ah, bool on); 101 void ath5k_ani_set_cck_weak_signal_detection(struct ath5k_hw *ah, bool on); 102 103 void ath5k_ani_print_counters(struct ath5k_hw *ah); 104 105 #endif /* ANI_H */ 106