/*
* Copyright (c) 2008-2011 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/* We use the hw_value as an index into our private channel structure */
#include <linux/export.h>
#include "common.h"
#define CHAN2G(_freq, _idx) { \
.band = NL80211_BAND_2GHZ, \
.center_freq = (_freq), \
.hw_value = (_idx), \
.max_power = 20 , \
}
#define CHAN5G(_freq, _idx) { \
.band = NL80211_BAND_5GHZ, \
.center_freq = (_freq), \
.hw_value = (_idx), \
.max_power = 20 , \
}
/* Some 2 GHz radios are actually tunable on 2312-2732
* on 5 MHz steps, we support the channels which we know
* we have calibration data for all cards though to make
* this static */
static const struct ieee80211_channel ath9k_2ghz_chantable[] = {
CHAN2G(2412 , 0 ), /* Channel 1 */
CHAN2G(2417 , 1 ), /* Channel 2 */
CHAN2G(2422 , 2 ), /* Channel 3 */
CHAN2G(2427 , 3 ), /* Channel 4 */
CHAN2G(2432 , 4 ), /* Channel 5 */
CHAN2G(2437 , 5 ), /* Channel 6 */
CHAN2G(2442 , 6 ), /* Channel 7 */
CHAN2G(2447 , 7 ), /* Channel 8 */
CHAN2G(2452 , 8 ), /* Channel 9 */
CHAN2G(2457 , 9 ), /* Channel 10 */
CHAN2G(2462 , 10 ), /* Channel 11 */
CHAN2G(2467 , 11 ), /* Channel 12 */
CHAN2G(2472 , 12 ), /* Channel 13 */
CHAN2G(2484 , 13 ), /* Channel 14 */
};
/* Some 5 GHz radios are actually tunable on XXXX-YYYY
* on 5 MHz steps, we support the channels which we know
* we have calibration data for all cards though to make
* this static */
static const struct ieee80211_channel ath9k_5ghz_chantable[] = {
/* _We_ call this UNII 1 */
CHAN5G(5180 , 14 ), /* Channel 36 */
CHAN5G(5200 , 15 ), /* Channel 40 */
CHAN5G(5220 , 16 ), /* Channel 44 */
CHAN5G(5240 , 17 ), /* Channel 48 */
/* _We_ call this UNII 2 */
CHAN5G(5260 , 18 ), /* Channel 52 */
CHAN5G(5280 , 19 ), /* Channel 56 */
CHAN5G(5300 , 20 ), /* Channel 60 */
CHAN5G(5320 , 21 ), /* Channel 64 */
/* _We_ call this "Middle band" */
CHAN5G(5500 , 22 ), /* Channel 100 */
CHAN5G(5520 , 23 ), /* Channel 104 */
CHAN5G(5540 , 24 ), /* Channel 108 */
CHAN5G(5560 , 25 ), /* Channel 112 */
CHAN5G(5580 , 26 ), /* Channel 116 */
CHAN5G(5600 , 27 ), /* Channel 120 */
CHAN5G(5620 , 28 ), /* Channel 124 */
CHAN5G(5640 , 29 ), /* Channel 128 */
CHAN5G(5660 , 30 ), /* Channel 132 */
CHAN5G(5680 , 31 ), /* Channel 136 */
CHAN5G(5700 , 32 ), /* Channel 140 */
/* _We_ call this UNII 3 */
CHAN5G(5745 , 33 ), /* Channel 149 */
CHAN5G(5765 , 34 ), /* Channel 153 */
CHAN5G(5785 , 35 ), /* Channel 157 */
CHAN5G(5805 , 36 ), /* Channel 161 */
CHAN5G(5825 , 37 ), /* Channel 165 */
};
/* Atheros hardware rate code addition for short preamble */
#define SHPCHECK(__hw_rate, __flags) \
((__flags & IEEE80211_RATE_SHORT_PREAMBLE) ? (__hw_rate | 0 x04 ) : 0 )
#define RATE(_bitrate, _hw_rate, _flags) { \
.bitrate = (_bitrate), \
.flags = (_flags), \
.hw_value = (_hw_rate), \
.hw_value_short = (SHPCHECK(_hw_rate, _flags)) \
}
static struct ieee80211_rate ath9k_legacy_rates[] = {
RATE(10 , 0 x1b, 0 ),
RATE(20 , 0 x1a, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(55 , 0 x19, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(110 , 0 x18, IEEE80211_RATE_SHORT_PREAMBLE),
RATE(60 , 0 x0b, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(90 , 0 x0f, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(120 , 0 x0a, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(180 , 0 x0e, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(240 , 0 x09, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(360 , 0 x0d, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(480 , 0 x08, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
RATE(540 , 0 x0c, (IEEE80211_RATE_SUPPORTS_5MHZ |
IEEE80211_RATE_SUPPORTS_10MHZ)),
};
int ath9k_cmn_init_channels_rates(struct ath_common *common)
{
struct ath_hw *ah = common->ah;
void *channels;
BUILD_BUG_ON(ARRAY_SIZE(ath9k_2ghz_chantable) +
ARRAY_SIZE(ath9k_5ghz_chantable) !=
ATH9K_NUM_CHANNELS);
if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ) {
channels = devm_kzalloc(ah->dev,
sizeof (ath9k_2ghz_chantable), GFP_KERNEL);
if (!channels)
return -ENOMEM;
memcpy(channels, ath9k_2ghz_chantable,
sizeof (ath9k_2ghz_chantable));
common->sbands[NL80211_BAND_2GHZ].channels = channels;
common->sbands[NL80211_BAND_2GHZ].band = NL80211_BAND_2GHZ;
common->sbands[NL80211_BAND_2GHZ].n_channels =
ARRAY_SIZE(ath9k_2ghz_chantable);
common->sbands[NL80211_BAND_2GHZ].bitrates = ath9k_legacy_rates;
common->sbands[NL80211_BAND_2GHZ].n_bitrates =
ARRAY_SIZE(ath9k_legacy_rates);
}
if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ) {
channels = devm_kzalloc(ah->dev,
sizeof (ath9k_5ghz_chantable), GFP_KERNEL);
if (!channels)
return -ENOMEM;
memcpy(channels, ath9k_5ghz_chantable,
sizeof (ath9k_5ghz_chantable));
common->sbands[NL80211_BAND_5GHZ].channels = channels;
common->sbands[NL80211_BAND_5GHZ].band = NL80211_BAND_5GHZ;
common->sbands[NL80211_BAND_5GHZ].n_channels =
ARRAY_SIZE(ath9k_5ghz_chantable);
common->sbands[NL80211_BAND_5GHZ].bitrates =
ath9k_legacy_rates + 4 ;
common->sbands[NL80211_BAND_5GHZ].n_bitrates =
ARRAY_SIZE(ath9k_legacy_rates) - 4 ;
}
return 0 ;
}
EXPORT_SYMBOL(ath9k_cmn_init_channels_rates);
void ath9k_cmn_setup_ht_cap(struct ath_hw *ah,
struct ieee80211_sta_ht_cap *ht_info)
{
struct ath_common *common = ath9k_hw_common(ah);
u8 tx_streams, rx_streams;
int i, max_streams;
ht_info->ht_supported = true ;
ht_info->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
IEEE80211_HT_CAP_SM_PS |
IEEE80211_HT_CAP_SGI_40 |
IEEE80211_HT_CAP_DSSSCCK40;
if (ah->caps.hw_caps & ATH9K_HW_CAP_LDPC)
ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
if (ah->caps.hw_caps & ATH9K_HW_CAP_SGI_20)
ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
if (AR_SREV_9271(ah) || AR_SREV_9330(ah) || AR_SREV_9485(ah) || AR_SREV_9565(ah))
max_streams = 1 ;
else if (AR_SREV_9462(ah))
max_streams = 2 ;
else if (AR_SREV_9300_20_OR_LATER(ah))
max_streams = 3 ;
else
max_streams = 2 ;
if (AR_SREV_9280_20_OR_LATER(ah)) {
if (max_streams >= 2 )
ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
}
/* set up supported mcs set */
memset(&ht_info->mcs, 0 , sizeof (ht_info->mcs));
tx_streams = ath9k_cmn_count_streams(ah->txchainmask, max_streams);
rx_streams = ath9k_cmn_count_streams(ah->rxchainmask, max_streams);
ath_dbg(common, CONFIG, "TX streams %d, RX streams: %d\n" ,
tx_streams, rx_streams);
if (tx_streams != rx_streams) {
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
ht_info->mcs.tx_params |= ((tx_streams - 1 ) <<
IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
}
for (i = 0 ; i < rx_streams; i++)
ht_info->mcs.rx_mask[i] = 0 xff;
ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
}
EXPORT_SYMBOL(ath9k_cmn_setup_ht_cap);
void ath9k_cmn_reload_chainmask(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
if (!(ah->caps.hw_caps & ATH9K_HW_CAP_HT))
return ;
if (ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
ath9k_cmn_setup_ht_cap(ah,
&common->sbands[NL80211_BAND_2GHZ].ht_cap);
if (ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
ath9k_cmn_setup_ht_cap(ah,
&common->sbands[NL80211_BAND_5GHZ].ht_cap);
}
EXPORT_SYMBOL(ath9k_cmn_reload_chainmask);
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(vorverarbeitet am 2026-06-07)
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