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authorRon Rindjunsky <ron.rindjunsky@intel.com>2008-05-15 13:53:56 +0800
committerJohn W. Linville <linville@tuxdriver.com>2008-05-21 21:47:52 -0400
commit39130df32adf8272373c03c8c2499cd2a1b4c5cf (patch)
treed0d93259ac7884c3a1e0695e2449ef7a7f05efc0 /drivers/net
parentedcdf8b21ac920e06b4180246123fe43b022e020 (diff)
iwlwifi: filling Tx MCS set
This patch fills the needed data about HW capabilities in matters of possible HT Tx MCS. Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-core.c33
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,