xref: /linux/drivers/net/wireless/ath/ath9k/ani.h (revision 6ed7ffddcf61f668114edb676417e5fb33773b59)
1 /*
2  * Copyright (c) 2008-2011 Atheros Communications Inc.
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 
17 #ifndef ANI_H
18 #define ANI_H
19 
20 #define HAL_PROCESS_ANI           0x00000001
21 
22 #define DO_ANI(ah) (((ah)->proc_phyerr & HAL_PROCESS_ANI) && ah->curchan)
23 
24 #define BEACON_RSSI(ahp) (ahp->stats.avgbrssi)
25 
26 /* units are errors per second */
27 #define ATH9K_ANI_OFDM_TRIG_HIGH          3500
28 #define ATH9K_ANI_OFDM_TRIG_HIGH_BELOW_INI 1000
29 
30 /* units are errors per second */
31 #define ATH9K_ANI_OFDM_TRIG_LOW           400
32 #define ATH9K_ANI_OFDM_TRIG_LOW_ABOVE_INI 900
33 
34 /* units are errors per second */
35 #define ATH9K_ANI_CCK_TRIG_HIGH           600
36 
37 /* units are errors per second */
38 #define ATH9K_ANI_CCK_TRIG_LOW            300
39 
40 #define ATH9K_ANI_NOISE_IMMUNE_LVL        4
41 #define ATH9K_ANI_USE_OFDM_WEAK_SIG       true
42 #define ATH9K_ANI_CCK_WEAK_SIG_THR        false
43 
44 #define ATH9K_ANI_SPUR_IMMUNE_LVL         3
45 
46 #define ATH9K_ANI_FIRSTEP_LVL             2
47 
48 #define ATH9K_ANI_RSSI_THR_HIGH           40
49 #define ATH9K_ANI_RSSI_THR_LOW            7
50 
51 #define ATH9K_ANI_PERIOD                  300
52 
53 /* in ms */
54 #define ATH9K_ANI_POLLINTERVAL            1000
55 
56 #define HAL_NOISE_IMMUNE_MAX              4
57 #define HAL_SPUR_IMMUNE_MAX               7
58 #define HAL_FIRST_STEP_MAX                2
59 
60 #define ATH9K_SIG_FIRSTEP_SETTING_MIN     0
61 #define ATH9K_SIG_FIRSTEP_SETTING_MAX     20
62 #define ATH9K_SIG_SPUR_IMM_SETTING_MIN    0
63 #define ATH9K_SIG_SPUR_IMM_SETTING_MAX    22
64 
65 /* values here are relative to the INI */
66 
67 enum ath9k_ani_cmd {
68 	ATH9K_ANI_PRESENT = 0x1,
69 	ATH9K_ANI_NOISE_IMMUNITY_LEVEL = 0x2,
70 	ATH9K_ANI_OFDM_WEAK_SIGNAL_DETECTION = 0x4,
71 	ATH9K_ANI_CCK_WEAK_SIGNAL_THR = 0x8,
72 	ATH9K_ANI_FIRSTEP_LEVEL = 0x10,
73 	ATH9K_ANI_SPUR_IMMUNITY_LEVEL = 0x20,
74 	ATH9K_ANI_MODE = 0x40,
75 	ATH9K_ANI_PHYERR_RESET = 0x80,
76 	ATH9K_ANI_MRC_CCK = 0x100,
77 	ATH9K_ANI_ALL = 0xfff
78 };
79 
80 struct ath9k_mib_stats {
81 	u32 ackrcv_bad;
82 	u32 rts_bad;
83 	u32 rts_good;
84 	u32 fcs_bad;
85 	u32 beacons;
86 };
87 
88 /* INI default values for ANI registers */
89 struct ath9k_ani_default {
90 	u16 m1ThreshLow;
91 	u16 m2ThreshLow;
92 	u16 m1Thresh;
93 	u16 m2Thresh;
94 	u16 m2CountThr;
95 	u16 m2CountThrLow;
96 	u16 m1ThreshLowExt;
97 	u16 m2ThreshLowExt;
98 	u16 m1ThreshExt;
99 	u16 m2ThreshExt;
100 	u16 firstep;
101 	u16 firstepLow;
102 	u16 cycpwrThr1;
103 	u16 cycpwrThr1Ext;
104 };
105 
106 struct ar5416AniState {
107 	u8 noiseImmunityLevel;
108 	u8 ofdmNoiseImmunityLevel;
109 	u8 cckNoiseImmunityLevel;
110 	bool ofdmsTurn;
111 	u8 mrcCCK;
112 	u8 spurImmunityLevel;
113 	u8 firstepLevel;
114 	u8 ofdmWeakSigDetect;
115 	u32 listenTime;
116 	u32 ofdmPhyErrCount;
117 	u32 cckPhyErrCount;
118 	struct ath9k_ani_default iniDef;
119 };
120 
121 struct ar5416Stats {
122 	u32 ast_ani_niup;
123 	u32 ast_ani_nidown;
124 	u32 ast_ani_spurup;
125 	u32 ast_ani_spurdown;
126 	u32 ast_ani_ofdmon;
127 	u32 ast_ani_ofdmoff;
128 	u32 ast_ani_cckhigh;
129 	u32 ast_ani_ccklow;
130 	u32 ast_ani_stepup;
131 	u32 ast_ani_stepdown;
132 	u32 ast_ani_ofdmerrs;
133 	u32 ast_ani_cckerrs;
134 	u32 ast_ani_reset;
135 	u32 ast_ani_lneg_or_lzero;
136 	u32 avgbrssi;
137 	struct ath9k_mib_stats ast_mibstats;
138 };
139 #define ah_mibStats stats.ast_mibstats
140 
141 void ath9k_enable_mib_counters(struct ath_hw *ah);
142 void ath9k_hw_disable_mib_counters(struct ath_hw *ah);
143 void ath9k_hw_ani_init(struct ath_hw *ah);
144 
145 #endif /* ANI_H */
146