diff options
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-core.c')
-rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 209 |
1 files changed, 122 insertions, 87 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 484d5c1a7312..dc7fd87bed98 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -607,8 +607,7 @@ EXPORT_SYMBOL(iwlcore_free_geos); static bool is_single_rx_stream(struct iwl_priv *priv) { return !priv->current_ht_config.is_ht || - ((priv->current_ht_config.mcs.rx_mask[1] == 0) && - (priv->current_ht_config.mcs.rx_mask[2] == 0)); + priv->current_ht_config.single_chain_sufficient; } static u8 iwl_is_channel_extension(struct iwl_priv *priv, @@ -634,10 +633,9 @@ static u8 iwl_is_channel_extension(struct iwl_priv *priv, u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv, struct ieee80211_sta_ht_cap *sta_ht_inf) { - struct iwl_ht_info *iwl_ht_conf = &priv->current_ht_config; + struct iwl_ht_config *ht_conf = &priv->current_ht_config; - if ((!iwl_ht_conf->is_ht) || - (iwl_ht_conf->supported_chan_width != IWL_CHANNEL_WIDTH_40MHZ)) + if (!ht_conf->is_ht || !ht_conf->is_40mhz) return 0; /* We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 @@ -653,7 +651,7 @@ u8 iwl_is_ht40_tx_allowed(struct iwl_priv *priv, #endif return iwl_is_channel_extension(priv, priv->band, le16_to_cpu(priv->staging_rxon.channel), - iwl_ht_conf->extension_chan_offset); + ht_conf->extension_chan_offset); } EXPORT_SYMBOL(iwl_is_ht40_tx_allowed); @@ -877,11 +875,11 @@ u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv) } EXPORT_SYMBOL(iwl_rate_get_lowest_plcp); -void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) +void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) { struct iwl_rxon_cmd *rxon = &priv->staging_rxon; - if (!ht_info->is_ht) { + if (!ht_conf->is_ht) { rxon->flags &= ~(RXON_FLG_CHANNEL_MODE_MSK | RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK | RXON_FLG_HT40_PROT_MSK | @@ -892,7 +890,7 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) /* FIXME: if the definition of ht_protection changed, the "translation" * will be needed for rxon->flags */ - rxon->flags |= cpu_to_le32(ht_info->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS); + rxon->flags |= cpu_to_le32(ht_conf->ht_protection << RXON_FLG_HT_OPERATING_MODE_POS); /* Set up channel bandwidth: * 20 MHz only, 20/40 mixed or pure 40 if ht40 ok */ @@ -901,10 +899,10 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); if (iwl_is_ht40_tx_allowed(priv, NULL)) { /* pure ht40 */ - if (ht_info->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { + if (ht_conf->ht_protection == IEEE80211_HT_OP_MODE_PROTECTION_20MHZ) { rxon->flags |= RXON_FLG_CHANNEL_MODE_PURE_40; /* Note: control channel is opposite of extension channel */ - switch (ht_info->extension_chan_offset) { + switch (ht_conf->extension_chan_offset) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: rxon->flags &= ~RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK; break; @@ -914,7 +912,7 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) } } else { /* Note: control channel is opposite of extension channel */ - switch (ht_info->extension_chan_offset) { + switch (ht_conf->extension_chan_offset) { case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: rxon->flags &= ~(RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK); rxon->flags |= RXON_FLG_CHANNEL_MODE_MIXED; @@ -937,14 +935,10 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_info *ht_info) if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); - IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X " - "rxon flags 0x%X operation mode :0x%X " + IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " "extension channel offset 0x%x\n", - ht_info->mcs.rx_mask[0], - ht_info->mcs.rx_mask[1], - ht_info->mcs.rx_mask[2], - le32_to_cpu(rxon->flags), ht_info->ht_protection, - ht_info->extension_chan_offset); + le32_to_cpu(rxon->flags), ht_conf->ht_protection, + ht_conf->extension_chan_offset); return; } EXPORT_SYMBOL(iwl_set_rxon_ht); @@ -954,47 +948,37 @@ EXPORT_SYMBOL(iwl_set_rxon_ht); #define IWL_NUM_IDLE_CHAINS_DUAL 2 #define IWL_NUM_IDLE_CHAINS_SINGLE 1 -/* Determine how many receiver/antenna chains to use. - * More provides better reception via diversity. Fewer saves power. +/* + * Determine how many receiver/antenna chains to use. + * + * More provides better reception via diversity. Fewer saves power + * at the expense of throughput, but only when not in powersave to + * start with. + * * MIMO (dual stream) requires at least 2, but works better with 3. * This does not determine *which* chains to use, just how many. */ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) { - bool is_single = is_single_rx_stream(priv); - bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); - /* # of Rx chains to use when expecting MIMO. */ - if (is_single || (!is_cam && (priv->current_ht_config.sm_ps == - WLAN_HT_CAP_SM_PS_STATIC))) + if (is_single_rx_stream(priv)) return IWL_NUM_RX_CHAINS_SINGLE; else return IWL_NUM_RX_CHAINS_MULTIPLE; } +/* + * When we are in power saving, there's no difference between + * using multiple chains or just a single chain, but due to the + * lack of SM PS we lose a lot of throughput if we use just a + * single chain. + * + * Therefore, use the active count here (which will use multiple + * chains unless connected to a legacy AP). + */ static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) { - int idle_cnt; - bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); - /* # Rx chains when idling and maybe trying to save power */ - switch (priv->current_ht_config.sm_ps) { - case WLAN_HT_CAP_SM_PS_STATIC: - case WLAN_HT_CAP_SM_PS_DYNAMIC: - idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL : - IWL_NUM_IDLE_CHAINS_SINGLE; - break; - case WLAN_HT_CAP_SM_PS_DISABLED: - idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE; - break; - case WLAN_HT_CAP_SM_PS_INVALID: - default: - IWL_ERR(priv, "invalid mimo ps mode %d\n", - priv->current_ht_config.sm_ps); - WARN_ON(1); - idle_cnt = -1; - break; - } - return idle_cnt; + return active_cnt; } /* up to 4 chains */ @@ -1004,7 +988,7 @@ static u8 iwl_count_chain_bitmap(u32 chain_bitmap) res = (chain_bitmap & BIT(0)) >> 0; res += (chain_bitmap & BIT(1)) >> 1; res += (chain_bitmap & BIT(2)) >> 2; - res += (chain_bitmap & BIT(4)) >> 4; + res += (chain_bitmap & BIT(3)) >> 3; return res; } @@ -1345,6 +1329,42 @@ void iwl_irq_handle_error(struct iwl_priv *priv) } EXPORT_SYMBOL(iwl_irq_handle_error); +int iwl_apm_stop_master(struct iwl_priv *priv) +{ + unsigned long flags; + + spin_lock_irqsave(&priv->lock, flags); + + /* set stop master bit */ + iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_STOP_MASTER); + + iwl_poll_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_MASTER_DISABLED, + CSR_RESET_REG_FLAG_MASTER_DISABLED, 100); + + spin_unlock_irqrestore(&priv->lock, flags); + IWL_DEBUG_INFO(priv, "stop master\n"); + + return 0; +} +EXPORT_SYMBOL(iwl_apm_stop_master); + +void iwl_apm_stop(struct iwl_priv *priv) +{ + unsigned long flags; + + iwl_apm_stop_master(priv); + + spin_lock_irqsave(&priv->lock, flags); + + iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); + + udelay(10); + /* clear "init complete" move adapter D0A* --> D0U state */ + iwl_clear_bit(priv, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); + spin_unlock_irqrestore(&priv->lock, flags); +} +EXPORT_SYMBOL(iwl_apm_stop); + void iwl_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags, unsigned int *total_flags, @@ -1494,8 +1514,6 @@ int iwl_init_drv(struct iwl_priv *priv) priv->iw_mode = NL80211_IFTYPE_STATION; - priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED; - /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); @@ -2227,42 +2245,58 @@ int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, EXPORT_SYMBOL(iwl_mac_conf_tx); static void iwl_ht_conf(struct iwl_priv *priv, - struct ieee80211_bss_conf *bss_conf) + struct ieee80211_bss_conf *bss_conf) { - struct ieee80211_sta_ht_cap *ht_conf; - struct iwl_ht_info *iwl_conf = &priv->current_ht_config; + struct iwl_ht_config *ht_conf = &priv->current_ht_config; struct ieee80211_sta *sta; IWL_DEBUG_MAC80211(priv, "enter: \n"); - if (!iwl_conf->is_ht) + if (!ht_conf->is_ht) return; + ht_conf->ht_protection = + bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; + ht_conf->non_GF_STA_present = + !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); - /* - * It is totally wrong to base global information on something - * that is valid only when associated, alas, this driver works - * that way and I don't know how to fix it. - */ + ht_conf->single_chain_sufficient = false; - rcu_read_lock(); - sta = ieee80211_find_sta(priv->hw, priv->bssid); - if (!sta) { + switch (priv->iw_mode) { + case NL80211_IFTYPE_STATION: + rcu_read_lock(); + sta = ieee80211_find_sta(priv->hw, priv->bssid); + if (sta) { + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int maxstreams; + + maxstreams = (ht_cap->mcs.tx_params & + IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) + >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; + maxstreams += 1; + + if ((ht_cap->mcs.rx_mask[1] == 0) && + (ht_cap->mcs.rx_mask[2] == 0)) + ht_conf->single_chain_sufficient = true; + if (maxstreams <= 1) + ht_conf->single_chain_sufficient = true; + } else { + /* + * If at all, this can only happen through a race + * when the AP disconnects us while we're still + * setting up the connection, in that case mac80211 + * will soon tell us about that. + */ + ht_conf->single_chain_sufficient = true; + } rcu_read_unlock(); - return; + break; + case NL80211_IFTYPE_ADHOC: + ht_conf->single_chain_sufficient = true; + break; + default: + break; } - ht_conf = &sta->ht_cap; - - iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2); - - memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16); - - iwl_conf->ht_protection = - bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; - iwl_conf->non_GF_STA_present = - !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); - - rcu_read_unlock(); IWL_DEBUG_MAC80211(priv, "leave\n"); } @@ -2386,6 +2420,8 @@ void iwl_bss_info_changed(struct ieee80211_hw *hw, priv->timestamp = bss_conf->timestamp; priv->assoc_capability = bss_conf->assoc_capability; + iwl_led_associate(priv); + /* * We have just associated, don't start scan too early * leave time for EAPOL exchange to complete. @@ -2396,9 +2432,10 @@ void iwl_bss_info_changed(struct ieee80211_hw *hw, IWL_DELAY_NEXT_SCAN_AFTER_ASSOC; if (!iwl_is_rfkill(priv)) priv->cfg->ops->lib->post_associate(priv); - } else + } else { priv->assoc_id = 0; - + iwl_led_disassociate(priv); + } } if (changes && iwl_is_associated(priv) && priv->assoc_id) { @@ -2569,7 +2606,7 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) struct iwl_priv *priv = hw->priv; const struct iwl_channel_info *ch_info; struct ieee80211_conf *conf = &hw->conf; - struct iwl_ht_info *ht_conf = &priv->current_ht_config; + struct iwl_ht_config *ht_conf = &priv->current_ht_config; unsigned long flags = 0; int ret = 0; u16 ch; @@ -2619,21 +2656,18 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) if (conf_is_ht40_minus(conf)) { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW; - ht_conf->supported_chan_width = - IWL_CHANNEL_WIDTH_40MHZ; + ht_conf->is_40mhz = true; } else if (conf_is_ht40_plus(conf)) { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE; - ht_conf->supported_chan_width = - IWL_CHANNEL_WIDTH_40MHZ; + ht_conf->is_40mhz = true; } else { ht_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE; - ht_conf->supported_chan_width = - IWL_CHANNEL_WIDTH_20MHZ; + ht_conf->is_40mhz = false; } } else - ht_conf->supported_chan_width = IWL_CHANNEL_WIDTH_20MHZ; + ht_conf->is_40mhz = false; /* Default to no protection. Protection mode will later be set * from BSS config in iwl_ht_conf */ ht_conf->ht_protection = IEEE80211_HT_OP_MODE_PROTECTION_NONE; @@ -2655,7 +2689,8 @@ int iwl_mac_config(struct ieee80211_hw *hw, u32 changed) iwl_set_rate(priv); } - if (changed & IEEE80211_CONF_CHANGE_PS) { + if (changed & (IEEE80211_CONF_CHANGE_PS | + IEEE80211_CONF_CHANGE_IDLE)) { ret = iwl_power_update_mode(priv, false); if (ret) IWL_DEBUG_MAC80211(priv, "Error setting sleep level\n"); @@ -2739,7 +2774,7 @@ void iwl_mac_reset_tsf(struct ieee80211_hw *hw) IWL_DEBUG_MAC80211(priv, "enter\n"); spin_lock_irqsave(&priv->lock, flags); - memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info)); + memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_config)); spin_unlock_irqrestore(&priv->lock, flags); iwl_reset_qos(priv); |