Commit 39130df3 authored by Ron Rindjunsky's avatar Ron Rindjunsky Committed by John W. Linville

iwlwifi: filling Tx MCS set

This patch fills the needed data about HW capabilities in matters of
possible HT Tx MCS.
Signed-off-by: default avatarRon Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent edcdf8b2
......@@ -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,
......
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