2 * Copyright (C) 2010 Bruno Randolf <br1@einfach.org>
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.
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.
21 enum ath5k_phy_error_code;
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
30 /* average beacon RSSI thresholds */
31 #define ATH5K_ANI_RSSI_THR_HIGH 40
32 #define ATH5K_ANI_RSSI_THR_LOW 7
34 /* maximum available levels */
35 #define ATH5K_ANI_MAX_FIRSTEP_LVL 2
36 #define ATH5K_ANI_MAX_NOISE_IMM_LVL 1
40 * enum ath5k_ani_mode - mode for ANI / noise sensitivity
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).
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
60 * struct ath5k_ani_state - ANI state and associated counters
62 * @max_spur_level: the maximum spur level is chip dependent
64 struct ath5k_ani_state {
65 enum ath5k_ani_mode ani_mode;
76 /* used by the algorithm */
77 unsigned int listen_time;
78 unsigned int ofdm_errors;
79 unsigned int cck_errors;
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;
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);
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);
103 void ath5k_ani_print_counters(struct ath5k_hw *ah);