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 | /* We use the hw_value as an index into our private channel structure */ |
18 | |
19 | #include "common.h" |
20 | |
21 | #define CHAN2G(_freq, _idx) { \ |
22 | .band = NL80211_BAND_2GHZ, \ |
23 | .center_freq = (_freq), \ |
24 | .hw_value = (_idx), \ |
25 | .max_power = 20, \ |
26 | } |
27 | |
28 | #define CHAN5G(_freq, _idx) { \ |
29 | .band = NL80211_BAND_5GHZ, \ |
30 | .center_freq = (_freq), \ |
31 | .hw_value = (_idx), \ |
32 | .max_power = 20, \ |
33 | } |
34 | |
35 | /* Some 2 GHz radios are actually tunable on 2312-2732 |
36 | * on 5 MHz steps, we support the channels which we know |
37 | * we have calibration data for all cards though to make |
38 | * this static */ |
39 | static const struct ieee80211_channel ath9k_2ghz_chantable[] = { |
40 | CHAN2G(2412, 0), /* Channel 1 */ |
41 | CHAN2G(2417, 1), /* Channel 2 */ |
42 | CHAN2G(2422, 2), /* Channel 3 */ |
43 | CHAN2G(2427, 3), /* Channel 4 */ |
44 | CHAN2G(2432, 4), /* Channel 5 */ |
45 | CHAN2G(2437, 5), /* Channel 6 */ |
46 | CHAN2G(2442, 6), /* Channel 7 */ |
47 | CHAN2G(2447, 7), /* Channel 8 */ |
48 | CHAN2G(2452, 8), /* Channel 9 */ |
49 | CHAN2G(2457, 9), /* Channel 10 */ |
50 | CHAN2G(2462, 10), /* Channel 11 */ |
51 | CHAN2G(2467, 11), /* Channel 12 */ |
52 | CHAN2G(2472, 12), /* Channel 13 */ |
53 | CHAN2G(2484, 13), /* Channel 14 */ |
54 | }; |
55 | |
56 | /* Some 5 GHz radios are actually tunable on XXXX-YYYY |
57 | * on 5 MHz steps, we support the channels which we know |
58 | * we have calibration data for all cards though to make |
59 | * this static */ |
60 | static const struct ieee80211_channel ath9k_5ghz_chantable[] = { |
61 | /* _We_ call this UNII 1 */ |
62 | CHAN5G(5180, 14), /* Channel 36 */ |
63 | CHAN5G(5200, 15), /* Channel 40 */ |
64 | CHAN5G(5220, 16), /* Channel 44 */ |
65 | CHAN5G(5240, 17), /* Channel 48 */ |
66 | /* _We_ call this UNII 2 */ |
67 | CHAN5G(5260, 18), /* Channel 52 */ |
68 | CHAN5G(5280, 19), /* Channel 56 */ |
69 | CHAN5G(5300, 20), /* Channel 60 */ |
70 | CHAN5G(5320, 21), /* Channel 64 */ |
71 | /* _We_ call this "Middle band" */ |
72 | CHAN5G(5500, 22), /* Channel 100 */ |
73 | CHAN5G(5520, 23), /* Channel 104 */ |
74 | CHAN5G(5540, 24), /* Channel 108 */ |
75 | CHAN5G(5560, 25), /* Channel 112 */ |
76 | CHAN5G(5580, 26), /* Channel 116 */ |
77 | CHAN5G(5600, 27), /* Channel 120 */ |
78 | CHAN5G(5620, 28), /* Channel 124 */ |
79 | CHAN5G(5640, 29), /* Channel 128 */ |
80 | CHAN5G(5660, 30), /* Channel 132 */ |
81 | CHAN5G(5680, 31), /* Channel 136 */ |
82 | CHAN5G(5700, 32), /* Channel 140 */ |
83 | /* _We_ call this UNII 3 */ |
84 | CHAN5G(5745, 33), /* Channel 149 */ |
85 | CHAN5G(5765, 34), /* Channel 153 */ |
86 | CHAN5G(5785, 35), /* Channel 157 */ |
87 | CHAN5G(5805, 36), /* Channel 161 */ |
88 | CHAN5G(5825, 37), /* Channel 165 */ |
89 | }; |
90 | |
91 | /* Atheros hardware rate code addition for short preamble */ |
92 | #define SHPCHECK(__hw_rate, __flags) \ |
93 | ((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0x04 ) : 0) |
94 | |
95 | #define RATE(_bitrate, _hw_rate, _flags) { \ |
96 | .bitrate = (_bitrate), \ |
97 | .flags = (_flags), \ |
98 | .hw_value = (_hw_rate), \ |
99 | .hw_value_short = (SHPCHECK(_hw_rate, _flags)) \ |
100 | } |
101 | |
102 | static struct ieee80211_rate ath9k_legacy_rates[] = { |
103 | RATE(10, 0x1b, 0), |
104 | RATE(20, 0x1a, IEEE80211_RATE_SHORT_PREAMBLE), |
105 | RATE(55, 0x19, IEEE80211_RATE_SHORT_PREAMBLE), |
106 | RATE(110, 0x18, IEEE80211_RATE_SHORT_PREAMBLE), |
107 | RATE(60, 0x0b, (IEEE80211_RATE_SUPPORTS_5MHZ | |
108 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
109 | RATE(90, 0x0f, (IEEE80211_RATE_SUPPORTS_5MHZ | |
110 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
111 | RATE(120, 0x0a, (IEEE80211_RATE_SUPPORTS_5MHZ | |
112 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
113 | RATE(180, 0x0e, (IEEE80211_RATE_SUPPORTS_5MHZ | |
114 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
115 | RATE(240, 0x09, (IEEE80211_RATE_SUPPORTS_5MHZ | |
116 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
117 | RATE(360, 0x0d, (IEEE80211_RATE_SUPPORTS_5MHZ | |
118 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
119 | RATE(480, 0x08, (IEEE80211_RATE_SUPPORTS_5MHZ | |
120 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
121 | RATE(540, 0x0c, (IEEE80211_RATE_SUPPORTS_5MHZ | |
122 | IEEE80211_RATE_SUPPORTS_10MHZ)), |
123 | }; |
124 | |
125 | int ath9k_cmn_init_channels_rates(struct ath_common *common) |
126 | { |
127 | struct ath_hw *ah = common->ah; |
128 | void *channels; |
129 | |
130 | BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) + |
131 | ARRAY_SIZE(ath9k_5ghz_chantable) != |
132 | ATH9K_NUM_CHANNELS); |
133 | |
134 | if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) { |
135 | channels = devm_kzalloc(dev: ah->dev, |
136 | size: sizeof(ath9k_2ghz_chantable), GFP_KERNEL); |
137 | if (!channels) |
138 | return -ENOMEM; |
139 | |
140 | memcpy(channels, ath9k_2ghz_chantable, |
141 | sizeof(ath9k_2ghz_chantable)); |
142 | common->sbands[NL80211_BAND_2GHZ].channels = channels; |
143 | common->sbands[NL80211_BAND_2GHZ].band = NL80211_BAND_2GHZ; |
144 | common->sbands[NL80211_BAND_2GHZ].n_channels = |
145 | ARRAY_SIZE(ath9k_2ghz_chantable); |
146 | common->sbands[NL80211_BAND_2GHZ].bitrates = ath9k_legacy_rates; |
147 | common->sbands[NL80211_BAND_2GHZ].n_bitrates = |
148 | ARRAY_SIZE(ath9k_legacy_rates); |
149 | } |
150 | |
151 | if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) { |
152 | channels = devm_kzalloc(dev: ah->dev, |
153 | size: sizeof(ath9k_5ghz_chantable), GFP_KERNEL); |
154 | if (!channels) |
155 | return -ENOMEM; |
156 | |
157 | memcpy(channels, ath9k_5ghz_chantable, |
158 | sizeof(ath9k_5ghz_chantable)); |
159 | common->sbands[NL80211_BAND_5GHZ].channels = channels; |
160 | common->sbands[NL80211_BAND_5GHZ].band = NL80211_BAND_5GHZ; |
161 | common->sbands[NL80211_BAND_5GHZ].n_channels = |
162 | ARRAY_SIZE(ath9k_5ghz_chantable); |
163 | common->sbands[NL80211_BAND_5GHZ].bitrates = |
164 | ath9k_legacy_rates + 4; |
165 | common->sbands[NL80211_BAND_5GHZ].n_bitrates = |
166 | ARRAY_SIZE(ath9k_legacy_rates) - 4; |
167 | } |
168 | return 0; |
169 | } |
170 | EXPORT_SYMBOL(ath9k_cmn_init_channels_rates); |
171 | |
172 | void ath9k_cmn_setup_ht_cap(struct ath_hw *ah, |
173 | struct ieee80211_sta_ht_cap *ht_info) |
174 | { |
175 | struct ath_common *common = ath9k_hw_common(ah); |
176 | u8 tx_streams, rx_streams; |
177 | int i, max_streams; |
178 | |
179 | ht_info->ht_supported = true; |
180 | ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
181 | IEEE80211_HT_CAP_SM_PS | |
182 | IEEE80211_HT_CAP_SGI_40 | |
183 | IEEE80211_HT_CAP_DSSSCCK40; |
184 | |
185 | if (ah->caps.hw_caps & ATH9K_HW_CAP_LDPC) |
186 | ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING; |
187 | |
188 | if (ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20) |
189 | ht_info->cap |= IEEE80211_HT_CAP_SGI_20; |
190 | |
191 | ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; |
192 | ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; |
193 | |
194 | if (AR_SREV_9271(ah) || AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah)) |
195 | max_streams = 1; |
196 | else if (AR_SREV_9462(ah)) |
197 | max_streams = 2; |
198 | else if (AR_SREV_9300_20_OR_LATER(ah)) |
199 | max_streams = 3; |
200 | else |
201 | max_streams = 2; |
202 | |
203 | if (AR_SREV_9280_20_OR_LATER(ah)) { |
204 | if (max_streams >= 2) |
205 | ht_info->cap |= IEEE80211_HT_CAP_TX_STBC; |
206 | ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT); |
207 | } |
208 | |
209 | /* set up supported mcs set */ |
210 | memset(&ht_info->mcs, 0, sizeof(ht_info->mcs)); |
211 | tx_streams = ath9k_cmn_count_streams(chainmask: ah->txchainmask, max: max_streams); |
212 | rx_streams = ath9k_cmn_count_streams(chainmask: ah->rxchainmask, max: max_streams); |
213 | |
214 | ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n" , |
215 | tx_streams, rx_streams); |
216 | |
217 | if (tx_streams != rx_streams) { |
218 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF; |
219 | ht_info->mcs.tx_params |= ((tx_streams - 1) << |
220 | IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT); |
221 | } |
222 | |
223 | for (i = 0; i < rx_streams; i++) |
224 | ht_info->mcs.rx_mask[i] = 0xff; |
225 | |
226 | ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; |
227 | } |
228 | EXPORT_SYMBOL(ath9k_cmn_setup_ht_cap); |
229 | |
230 | void ath9k_cmn_reload_chainmask(struct ath_hw *ah) |
231 | { |
232 | struct ath_common *common = ath9k_hw_common(ah); |
233 | |
234 | if (!(ah->caps.hw_caps & ATH9K_HW_CAP_HT)) |
235 | return; |
236 | |
237 | if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) |
238 | ath9k_cmn_setup_ht_cap(ah, |
239 | &common->sbands[NL80211_BAND_2GHZ].ht_cap); |
240 | if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) |
241 | ath9k_cmn_setup_ht_cap(ah, |
242 | &common->sbands[NL80211_BAND_5GHZ].ht_cap); |
243 | } |
244 | EXPORT_SYMBOL(ath9k_cmn_reload_chainmask); |
245 | |