diff options
Diffstat (limited to 'drivers/net/wireless')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index d3cbad2bf87..a2f4f288375 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -317,24 +317,33 @@ void iwl_reset_qos(struct iwl_priv *priv) EXPORT_SYMBOL(iwl_reset_qos); #ifdef CONFIG_IWL4965_HT +#define MAX_BIT_RATE_40_MHZ 0x96; /* 150 Mbps */ +#define MAX_BIT_RATE_20_MHZ 0x48; /* 72 Mbps */ static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, struct ieee80211_ht_info *ht_info, enum ieee80211_band band) { + u16 max_bit_rate = 0; + u8 rx_chains_num = priv->hw_params.rx_chains_num; + u8 tx_chains_num = priv->hw_params.tx_chains_num; + ht_info->cap = 0; memset(ht_info->supp_mcs_set, 0, 16); ht_info->ht_supported = 1; + ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD; + ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20; + ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS & + (IWL_MIMO_PS_NONE << 2)); + + max_bit_rate = MAX_BIT_RATE_20_MHZ; if (priv->hw_params.fat_channel & BIT(band)) { ht_info->cap |= (u16)IEEE80211_HT_CAP_SUP_WIDTH; ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_40; ht_info->supp_mcs_set[4] = 0x01; + max_bit_rate = MAX_BIT_RATE_40_MHZ; } - ht_info->cap |= (u16)IEEE80211_HT_CAP_GRN_FLD; - ht_info->cap |= (u16)IEEE80211_HT_CAP_SGI_20; - ht_info->cap |= (u16)(IEEE80211_HT_CAP_MIMO_PS & - (IWL_MIMO_PS_NONE << 2)); if (priv->cfg->mod_params->amsdu_size_8K) ht_info->cap |= (u16)IEEE80211_HT_CAP_MAX_AMSDU; @@ -343,10 +352,22 @@ static void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF; ht_info->supp_mcs_set[0] = 0xFF; - if (priv->hw_params.tx_chains_num >= 2) + if (rx_chains_num >= 2) ht_info->supp_mcs_set[1] = 0xFF; - if (priv->hw_params.tx_chains_num >= 3) + if (rx_chains_num >= 3) ht_info->supp_mcs_set[2] = 0xFF; + + /* Highest supported Rx data rate */ + max_bit_rate *= rx_chains_num; + ht_info->supp_mcs_set[10] = (u8)(max_bit_rate & 0x00FF); + ht_info->supp_mcs_set[11] = (u8)((max_bit_rate & 0xFF00) >> 8); + + /* Tx MCS capabilities */ + ht_info->supp_mcs_set[12] = IEEE80211_HT_CAP_MCS_TX_DEFINED; + if (tx_chains_num != rx_chains_num) { + ht_info->supp_mcs_set[12] |= IEEE80211_HT_CAP_MCS_TX_RX_DIFF; + ht_info->supp_mcs_set[12] |= ((tx_chains_num - 1) << 2); + } } #else static inline void iwlcore_init_ht_hw_capab(const struct iwl_priv *priv, |