120 lines
4.1 KiB
C
120 lines
4.1 KiB
C
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/*
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* Copyright (C) 2010 Bruno Randolf <br1@einfach.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef ANI_H
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#define ANI_H
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#include "../ath.h"
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enum ath5k_phy_error_code;
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/* these thresholds are relative to the ATH5K_ANI_LISTEN_PERIOD */
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#define ATH5K_ANI_LISTEN_PERIOD 100
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#define ATH5K_ANI_OFDM_TRIG_HIGH 500
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#define ATH5K_ANI_OFDM_TRIG_LOW 200
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#define ATH5K_ANI_CCK_TRIG_HIGH 200
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#define ATH5K_ANI_CCK_TRIG_LOW 100
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/* average beacon RSSI thresholds */
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#define ATH5K_ANI_RSSI_THR_HIGH 40
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#define ATH5K_ANI_RSSI_THR_LOW 7
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/* maximum available levels */
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#define ATH5K_ANI_MAX_FIRSTEP_LVL 2
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#define ATH5K_ANI_MAX_NOISE_IMM_LVL 1
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/**
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* enum ath5k_ani_mode - mode for ANI / noise sensitivity
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*
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* @ATH5K_ANI_MODE_OFF: Turn ANI off. This can be useful to just stop the ANI
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* algorithm after it has been on auto mode.
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* @ATH5K_ANI_MODE_MANUAL_LOW: Manually set all immunity parameters to low,
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* maximizing sensitivity. ANI will not run.
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* @ATH5K_ANI_MODE_MANUAL_HIGH: Manually set all immunity parameters to high,
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* minimizing sensitivity. ANI will not run.
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* @ATH5K_ANI_MODE_AUTO: Automatically control immunity parameters based on the
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* amount of OFDM and CCK frame errors (default).
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*/
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enum ath5k_ani_mode {
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ATH5K_ANI_MODE_OFF = 0,
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ATH5K_ANI_MODE_MANUAL_LOW = 1,
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ATH5K_ANI_MODE_MANUAL_HIGH = 2,
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ATH5K_ANI_MODE_AUTO = 3
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};
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/**
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* struct ath5k_ani_state - ANI state and associated counters
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* @ani_mode: One of enum ath5k_ani_mode
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* @noise_imm_level: Noise immunity level
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* @spur_level: Spur immunity level
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* @firstep_level: FIRstep level
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* @ofdm_weak_sig: OFDM weak signal detection state (on/off)
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* @cck_weak_sig: CCK weak signal detection state (on/off)
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* @max_spur_level: Max spur immunity level (chip specific)
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* @listen_time: Listen time
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* @ofdm_errors: OFDM timing error count
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* @cck_errors: CCK timing error count
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* @last_cc: The &struct ath_cycle_counters (for stats)
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* @last_listen: Listen time from previous run (for stats)
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* @last_ofdm_errors: OFDM timing error count from previous run (for tats)
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* @last_cck_errors: CCK timing error count from previous run (for stats)
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* @sum_ofdm_errors: Sum of OFDM timing errors (for stats)
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* @sum_cck_errors: Sum of all CCK timing errors (for stats)
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*/
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struct ath5k_ani_state {
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enum ath5k_ani_mode ani_mode;
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/* state */
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int noise_imm_level;
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int spur_level;
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int firstep_level;
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bool ofdm_weak_sig;
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bool cck_weak_sig;
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int max_spur_level;
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/* used by the algorithm */
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unsigned int listen_time;
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unsigned int ofdm_errors;
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unsigned int cck_errors;
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/* debug/statistics only: numbers from last ANI calibration */
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struct ath_cycle_counters last_cc;
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unsigned int last_listen;
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unsigned int last_ofdm_errors;
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unsigned int last_cck_errors;
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unsigned int sum_ofdm_errors;
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unsigned int sum_cck_errors;
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};
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void ath5k_ani_init(struct ath5k_hw *ah, enum ath5k_ani_mode mode);
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void ath5k_ani_mib_intr(struct ath5k_hw *ah);
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void ath5k_ani_calibration(struct ath5k_hw *ah);
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void ath5k_ani_phy_error_report(struct ath5k_hw *ah,
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enum ath5k_phy_error_code phyerr);
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/* for manual control */
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void ath5k_ani_set_noise_immunity_level(struct ath5k_hw *ah, int level);
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void ath5k_ani_set_spur_immunity_level(struct ath5k_hw *ah, int level);
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void ath5k_ani_set_firstep_level(struct ath5k_hw *ah, int level);
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void ath5k_ani_set_ofdm_weak_signal_detection(struct ath5k_hw *ah, bool on);
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void ath5k_ani_set_cck_weak_signal_detection(struct ath5k_hw *ah, bool on);
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void ath5k_ani_print_counters(struct ath5k_hw *ah);
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#endif /* ANI_H */
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