iwlwifi: Probe Flow - Extracting hw and priv init

1. Extracting hw and priv initialization from probe function.
2. Moving some initialization functions to core module.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 178 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c
index 244318af53fc..0e9c3b3d98ce 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.c
+++ b/drivers/net/wireless/iwlwifi/iwl-core.c
@@ -71,3 +71,181 @@ out:
 }
 EXPORT_SYMBOL(iwl_alloc_all);
 
+/**
+ * iwlcore_clear_stations_table - Clear the driver's station table
+ *
+ * NOTE:  This does not clear or otherwise alter the device's station table.
+ */
+void iwlcore_clear_stations_table(struct iwl_priv *priv)
+{
+	unsigned long flags;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+
+	priv->num_stations = 0;
+	memset(priv->stations, 0, sizeof(priv->stations));
+
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+}
+EXPORT_SYMBOL(iwlcore_clear_stations_table);
+
+void iwlcore_reset_qos(struct iwl_priv *priv)
+{
+	u16 cw_min = 15;
+	u16 cw_max = 1023;
+	u8 aifs = 2;
+	u8 is_legacy = 0;
+	unsigned long flags;
+	int i;
+
+	spin_lock_irqsave(&priv->lock, flags);
+	priv->qos_data.qos_active = 0;
+
+	if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS) {
+		if (priv->qos_data.qos_enable)
+			priv->qos_data.qos_active = 1;
+		if (!(priv->active_rate & 0xfff0)) {
+			cw_min = 31;
+			is_legacy = 1;
+		}
+	} else if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
+		if (priv->qos_data.qos_enable)
+			priv->qos_data.qos_active = 1;
+	} else if (!(priv->staging_rxon.flags & RXON_FLG_SHORT_SLOT_MSK)) {
+		cw_min = 31;
+		is_legacy = 1;
+	}
+
+	if (priv->qos_data.qos_active)
+		aifs = 3;
+
+	priv->qos_data.def_qos_parm.ac[0].cw_min = cpu_to_le16(cw_min);
+	priv->qos_data.def_qos_parm.ac[0].cw_max = cpu_to_le16(cw_max);
+	priv->qos_data.def_qos_parm.ac[0].aifsn = aifs;
+	priv->qos_data.def_qos_parm.ac[0].edca_txop = 0;
+	priv->qos_data.def_qos_parm.ac[0].reserved1 = 0;
+
+	if (priv->qos_data.qos_active) {
+		i = 1;
+		priv->qos_data.def_qos_parm.ac[i].cw_min = cpu_to_le16(cw_min);
+		priv->qos_data.def_qos_parm.ac[i].cw_max = cpu_to_le16(cw_max);
+		priv->qos_data.def_qos_parm.ac[i].aifsn = 7;
+		priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
+		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+
+		i = 2;
+		priv->qos_data.def_qos_parm.ac[i].cw_min =
+			cpu_to_le16((cw_min + 1) / 2 - 1);
+		priv->qos_data.def_qos_parm.ac[i].cw_max =
+			cpu_to_le16(cw_max);
+		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
+		if (is_legacy)
+			priv->qos_data.def_qos_parm.ac[i].edca_txop =
+				cpu_to_le16(6016);
+		else
+			priv->qos_data.def_qos_parm.ac[i].edca_txop =
+				cpu_to_le16(3008);
+		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+
+		i = 3;
+		priv->qos_data.def_qos_parm.ac[i].cw_min =
+			cpu_to_le16((cw_min + 1) / 4 - 1);
+		priv->qos_data.def_qos_parm.ac[i].cw_max =
+			cpu_to_le16((cw_max + 1) / 2 - 1);
+		priv->qos_data.def_qos_parm.ac[i].aifsn = 2;
+		priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+		if (is_legacy)
+			priv->qos_data.def_qos_parm.ac[i].edca_txop =
+				cpu_to_le16(3264);
+		else
+			priv->qos_data.def_qos_parm.ac[i].edca_txop =
+				cpu_to_le16(1504);
+	} else {
+		for (i = 1; i < 4; i++) {
+			priv->qos_data.def_qos_parm.ac[i].cw_min =
+				cpu_to_le16(cw_min);
+			priv->qos_data.def_qos_parm.ac[i].cw_max =
+				cpu_to_le16(cw_max);
+			priv->qos_data.def_qos_parm.ac[i].aifsn = aifs;
+			priv->qos_data.def_qos_parm.ac[i].edca_txop = 0;
+			priv->qos_data.def_qos_parm.ac[i].reserved1 = 0;
+		}
+	}
+	IWL_DEBUG_QOS("set QoS to default \n");
+
+	spin_unlock_irqrestore(&priv->lock, flags);
+}
+EXPORT_SYMBOL(iwlcore_reset_qos);
+
+/**
+ * iwlcore_set_rxon_channel - Set the phymode and channel values in staging RXON
+ * @phymode: MODE_IEEE80211A sets to 5.2GHz; all else set to 2.4GHz
+ * @channel: Any channel valid for the requested phymode
+
+ * In addition to setting the staging RXON, priv->phymode is also set.
+ *
+ * NOTE:  Does not commit to the hardware; it sets appropriate bit fields
+ * in the staging RXON flag structure based on the phymode
+ */
+int iwlcore_set_rxon_channel(struct iwl_priv *priv,
+				enum ieee80211_band band,
+				u16 channel)
+{
+	if (!iwl4965_get_channel_info(priv, band, channel)) {
+		IWL_DEBUG_INFO("Could not set channel to %d [%d]\n",
+			       channel, band);
+		return -EINVAL;
+	}
+
+	if ((le16_to_cpu(priv->staging_rxon.channel) == channel) &&
+	    (priv->band == band))
+		return 0;
+
+	priv->staging_rxon.channel = cpu_to_le16(channel);
+	if (band == IEEE80211_BAND_5GHZ)
+		priv->staging_rxon.flags &= ~RXON_FLG_BAND_24G_MSK;
+	else
+		priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
+
+	priv->band = band;
+
+	IWL_DEBUG_INFO("Staging channel set to %d [%d]\n", channel, band);
+
+	return 0;
+}
+EXPORT_SYMBOL(iwlcore_set_rxon_channel);
+
+static void iwlcore_init_hw(struct iwl_priv *priv)
+{
+	struct ieee80211_hw *hw = priv->hw;
+	hw->rate_control_algorithm = "iwl-4965-rs";
+
+	/* Tell mac80211 and its clients (e.g. Wireless Extensions)
+	 *	 the range of signal quality values that we'll provide.
+	 * Negative values for level/noise indicate that we'll provide dBm.
+	 * For WE, at least, non-0 values here *enable* display of values
+	 *	 in app (iwconfig). */
+	hw->max_rssi = -20; /* signal level, negative indicates dBm */
+	hw->max_noise = -20;	/* noise level, negative indicates dBm */
+	hw->max_signal = 100;	/* link quality indication (%) */
+
+	/* Tell mac80211 our Tx characteristics */
+	hw->flags = IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE;
+
+	/* Default value; 4 EDCA QOS priorities */
+	hw->queues = 4;
+#ifdef CONFIG_IWL4965_HT
+	/* Enhanced value; more queues, to support 11n aggregation */
+	hw->queues = 16;
+#endif /* CONFIG_IWL4965_HT */
+}
+
+int iwl_setup(struct iwl_priv *priv)
+{
+	int ret = 0;
+	iwlcore_init_hw(priv);
+	ret = priv->cfg->ops->lib->init_drv(priv);
+	return ret;
+}
+EXPORT_SYMBOL(iwl_setup);
+