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1/*2 * Copyright (c) 2008-2011 Atheros Communications Inc.3 *4 * Permission to use, copy, modify, and/or distribute this software for any5 * purpose with or without fee is hereby granted, provided that the above6 * copyright notice and this permission notice appear in all copies.7 *8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF14 * 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 2312-273236 * on 5 MHz steps, we support the channels which we know37 * we have calibration data for all cards though to make38 * this static */39static 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-YYYY57 * on 5 MHz steps, we support the channels which we know58 * we have calibration data for all cards though to make59 * this static */60static 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 102static 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 125int 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(ah->dev,136 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(ah->dev,153 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}170EXPORT_SYMBOL(ath9k_cmn_init_channels_rates);171 172void 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 else201 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(ah->txchainmask, max_streams);212 rx_streams = ath9k_cmn_count_streams(ah->rxchainmask, 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}228EXPORT_SYMBOL(ath9k_cmn_setup_ht_cap);229 230void 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}244EXPORT_SYMBOL(ath9k_cmn_reload_chainmask);245