Commit | Line | Data |
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f078f209 LR |
1 | /* |
2 | * Copyright (c) 2004 Sam Leffler, Errno Consulting | |
3 | * Copyright (c) 2004 Video54 Technologies, Inc. | |
cee075a2 | 4 | * Copyright (c) 2008-2009 Atheros Communications Inc. |
f078f209 LR |
5 | * |
6 | * Permission to use, copy, modify, and/or distribute this software for any | |
7 | * purpose with or without fee is hereby granted, provided that the above | |
8 | * copyright notice and this permission notice appear in all copies. | |
9 | * | |
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
17 | */ | |
18 | ||
19 | #ifndef RC_H | |
20 | #define RC_H | |
21 | ||
db86f07e LR |
22 | #include "hw.h" |
23 | ||
f078f209 LR |
24 | struct ath_softc; |
25 | ||
46d14a58 S |
26 | #define ATH_RATE_MAX 30 |
27 | #define RATE_TABLE_SIZE 64 | |
28 | #define MAX_TX_RATE_PHY 48 | |
f078f209 | 29 | |
2c5a744d S |
30 | /* VALID_ALL - valid for 20/40/Legacy, |
31 | * VALID - Legacy only, | |
32 | * VALID_20 - HT 20 only, | |
33 | * VALID_40 - HT 40 only */ | |
34 | ||
46d14a58 S |
35 | #define INVALID 0x0 |
36 | #define VALID 0x1 | |
37 | #define VALID_20 0x2 | |
38 | #define VALID_40 0x4 | |
39 | #define VALID_2040 (VALID_20|VALID_40) | |
40 | #define VALID_ALL (VALID_2040|VALID) | |
f078f209 | 41 | |
394cf0a1 S |
42 | enum { |
43 | WLAN_RC_PHY_OFDM, | |
44 | WLAN_RC_PHY_CCK, | |
45 | WLAN_RC_PHY_HT_20_SS, | |
46 | WLAN_RC_PHY_HT_20_DS, | |
47 | WLAN_RC_PHY_HT_40_SS, | |
48 | WLAN_RC_PHY_HT_40_DS, | |
49 | WLAN_RC_PHY_HT_20_SS_HGI, | |
50 | WLAN_RC_PHY_HT_20_DS_HGI, | |
51 | WLAN_RC_PHY_HT_40_SS_HGI, | |
52 | WLAN_RC_PHY_HT_40_DS_HGI, | |
53 | WLAN_RC_PHY_MAX | |
54 | }; | |
55 | ||
5701ed84 S |
56 | #define WLAN_RC_PHY_DS(_phy) ((_phy == WLAN_RC_PHY_HT_20_DS) \ |
57 | || (_phy == WLAN_RC_PHY_HT_40_DS) \ | |
58 | || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ | |
59 | || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) | |
c755ad34 LR |
60 | #define WLAN_RC_PHY_20(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS) \ |
61 | || (_phy == WLAN_RC_PHY_HT_20_DS) \ | |
62 | || (_phy == WLAN_RC_PHY_HT_20_SS_HGI) \ | |
63 | || (_phy == WLAN_RC_PHY_HT_20_DS_HGI)) | |
5701ed84 S |
64 | #define WLAN_RC_PHY_40(_phy) ((_phy == WLAN_RC_PHY_HT_40_SS) \ |
65 | || (_phy == WLAN_RC_PHY_HT_40_DS) \ | |
66 | || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ | |
67 | || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) | |
f078f209 | 68 | #define WLAN_RC_PHY_SGI(_phy) ((_phy == WLAN_RC_PHY_HT_20_SS_HGI) \ |
5701ed84 S |
69 | || (_phy == WLAN_RC_PHY_HT_20_DS_HGI) \ |
70 | || (_phy == WLAN_RC_PHY_HT_40_SS_HGI) \ | |
71 | || (_phy == WLAN_RC_PHY_HT_40_DS_HGI)) | |
f078f209 LR |
72 | |
73 | #define WLAN_RC_PHY_HT(_phy) (_phy >= WLAN_RC_PHY_HT_20_SS) | |
74 | ||
f078f209 | 75 | #define WLAN_RC_CAP_MODE(capflag) (((capflag & WLAN_RC_HT_FLAG) ? \ |
46d14a58 | 76 | (capflag & WLAN_RC_40_FLAG) ? VALID_40 : VALID_20 : VALID)) |
f078f209 LR |
77 | |
78 | /* Return TRUE if flag supports HT20 && client supports HT20 or | |
79 | * return TRUE if flag supports HT40 && client supports HT40. | |
80 | * This is used becos some rates overlap between HT20/HT40. | |
81 | */ | |
46d14a58 S |
82 | #define WLAN_RC_PHY_HT_VALID(flag, capflag) \ |
83 | (((flag & VALID_20) && !(capflag & WLAN_RC_40_FLAG)) || \ | |
84 | ((flag & VALID_40) && (capflag & WLAN_RC_40_FLAG))) | |
f078f209 LR |
85 | |
86 | #define WLAN_RC_DS_FLAG (0x01) | |
87 | #define WLAN_RC_40_FLAG (0x02) | |
88 | #define WLAN_RC_SGI_FLAG (0x04) | |
89 | #define WLAN_RC_HT_FLAG (0x08) | |
90 | ||
5701ed84 S |
91 | /** |
92 | * struct ath_rate_table - Rate Control table | |
93 | * @valid: valid for use in rate control | |
94 | * @valid_single_stream: valid for use in rate control for | |
95 | * single stream operation | |
96 | * @phy: CCK/OFDM | |
97 | * @ratekbps: rate in Kbits per second | |
98 | * @user_ratekbps: user rate in Kbits per second | |
99 | * @ratecode: rate that goes into HW descriptors | |
100 | * @short_preamble: Mask for enabling short preamble in ratecode for CCK | |
101 | * @dot11rate: value that goes into supported | |
102 | * rates info element of MLME | |
103 | * @ctrl_rate: Index of next lower basic rate, used for duration computation | |
104 | * @max_4ms_framelen: maximum frame length(bytes) for tx duration | |
105 | * @probe_interval: interval for rate control to probe for other rates | |
106 | * @rssi_reduce_interval: interval for rate control to reduce rssi | |
46d14a58 | 107 | * @initial_ratemax: initial ratemax value |
5701ed84 | 108 | */ |
f078f209 LR |
109 | struct ath_rate_table { |
110 | int rate_cnt; | |
545750d3 | 111 | int mcs_start; |
f078f209 | 112 | struct { |
e21247cc ML |
113 | u8 valid; |
114 | u8 valid_single_stream; | |
5701ed84 S |
115 | u8 phy; |
116 | u32 ratekbps; | |
117 | u32 user_ratekbps; | |
118 | u8 ratecode; | |
5701ed84 S |
119 | u8 dot11rate; |
120 | u8 ctrl_rate; | |
5701ed84 S |
121 | u8 base_index; |
122 | u8 cw40index; | |
123 | u8 sgi_index; | |
124 | u8 ht_index; | |
f078f209 | 125 | } info[RATE_TABLE_SIZE]; |
5701ed84 | 126 | u32 probe_interval; |
5701ed84 | 127 | u8 initial_ratemax; |
f078f209 LR |
128 | }; |
129 | ||
256b7759 S |
130 | struct ath_rateset { |
131 | u8 rs_nrates; | |
132 | u8 rs_rates[ATH_RATE_MAX]; | |
133 | }; | |
134 | ||
5701ed84 | 135 | /** |
46d14a58 | 136 | * struct ath_rate_priv - Rate Control priv data |
5701ed84 | 137 | * @state: RC state |
5701ed84 | 138 | * @probe_rate: rate we are probing at |
5701ed84 S |
139 | * @probe_time: msec timestamp for last probe |
140 | * @hw_maxretry_pktcnt: num of packets since we got HW max retry error | |
141 | * @max_valid_rate: maximum number of valid rate | |
142 | * @per_down_time: msec timestamp for last PER down step | |
143 | * @valid_phy_ratecnt: valid rate count | |
144 | * @rate_max_phy: phy index for the max rate | |
922bac60 | 145 | * @per: PER for every valid rate in % |
5701ed84 | 146 | * @probe_interval: interval for ratectrl to probe for other rates |
256b7759 S |
147 | * @prev_data_rix: rate idx of last data frame |
148 | * @ht_cap: HT capabilities | |
256b7759 S |
149 | * @neg_rates: Negotatied rates |
150 | * @neg_ht_rates: Negotiated HT rates | |
5701ed84 | 151 | */ |
46d14a58 | 152 | struct ath_rate_priv { |
5701ed84 S |
153 | u8 rate_table_size; |
154 | u8 probe_rate; | |
5701ed84 S |
155 | u8 hw_maxretry_pktcnt; |
156 | u8 max_valid_rate; | |
46d14a58 | 157 | u8 valid_rate_index[RATE_TABLE_SIZE]; |
256b7759 | 158 | u8 ht_cap; |
5701ed84 | 159 | u8 valid_phy_ratecnt[WLAN_RC_PHY_MAX]; |
46d14a58 | 160 | u8 valid_phy_rateidx[WLAN_RC_PHY_MAX][RATE_TABLE_SIZE]; |
5701ed84 | 161 | u8 rate_max_phy; |
922bac60 | 162 | u8 per[RATE_TABLE_SIZE]; |
256b7759 S |
163 | u32 probe_time; |
164 | u32 per_down_time; | |
5701ed84 | 165 | u32 probe_interval; |
5701ed84 | 166 | u32 prev_data_rix; |
fe7f4a77 | 167 | u32 tx_triglevel_max; |
5701ed84 | 168 | struct ath_rateset neg_rates; |
5701ed84 | 169 | struct ath_rateset neg_ht_rates; |
5701ed84 | 170 | struct ath_rate_softc *asc; |
f078f209 LR |
171 | }; |
172 | ||
827e69bf FF |
173 | #define ATH_TX_INFO_FRAME_TYPE_INTERNAL (1 << 0) |
174 | #define ATH_TX_INFO_FRAME_TYPE_PAUSE (1 << 1) | |
827e69bf FF |
175 | #define ATH_TX_INFO_XRETRY (1 << 3) |
176 | #define ATH_TX_INFO_UNDERRUN (1 << 4) | |
177 | ||
f0ed85c6 | 178 | enum ath9k_internal_frame_type { |
c81494d5 PR |
179 | ATH9K_IFT_NOT_INTERNAL, |
180 | ATH9K_IFT_PAUSE, | |
181 | ATH9K_IFT_UNPAUSE | |
f0ed85c6 JM |
182 | }; |
183 | ||
f078f209 LR |
184 | int ath_rate_control_register(void); |
185 | void ath_rate_control_unregister(void); | |
186 | ||
187 | #endif /* RC_H */ |