--- /dev/null
+/*
+ Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
+ <http://rt2x00.serialmonkey.com>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ Module: rt2x00lib
+ Abstract: rt2x00 generic configuration routines.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "rt2x00.h"
+#include "rt2x00lib.h"
+
+void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
+ struct rt2x00_intf *intf,
+ enum nl80211_iftype type,
+ const u8 *mac, const u8 *bssid)
+{
+ struct rt2x00intf_conf conf;
+ unsigned int flags = 0;
+
+ conf.type = type;
+
+ switch (type) {
+ case NL80211_IFTYPE_ADHOC:
+ conf.sync = TSF_SYNC_ADHOC;
+ break;
+ case NL80211_IFTYPE_AP:
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_WDS:
+ conf.sync = TSF_SYNC_AP_NONE;
+ break;
+ case NL80211_IFTYPE_STATION:
+ conf.sync = TSF_SYNC_INFRA;
+ break;
+ default:
+ conf.sync = TSF_SYNC_NONE;
+ break;
+ }
+
+ /*
+ * Note that when NULL is passed as address we will send
+ * 00:00:00:00:00 to the device to clear the address.
+ * This will prevent the device being confused when it wants
+ * to ACK frames or considers itself associated.
+ */
+ memset(conf.mac, 0, sizeof(conf.mac));
+ if (mac)
+ memcpy(conf.mac, mac, ETH_ALEN);
+
+ memset(conf.bssid, 0, sizeof(conf.bssid));
+ if (bssid)
+ memcpy(conf.bssid, bssid, ETH_ALEN);
+
+ flags |= CONFIG_UPDATE_TYPE;
+ if (mac || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
+ flags |= CONFIG_UPDATE_MAC;
+ if (bssid || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
+ flags |= CONFIG_UPDATE_BSSID;
+
+ rt2x00dev->ops->lib->config_intf(rt2x00dev, intf, &conf, flags);
+}
+
+void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
+ struct rt2x00_intf *intf,
+ struct ieee80211_bss_conf *bss_conf,
+ u32 changed)
+{
+ struct rt2x00lib_erp erp;
+
+ memset(&erp, 0, sizeof(erp));
+
+ erp.short_preamble = bss_conf->use_short_preamble;
+ erp.cts_protection = bss_conf->use_cts_prot;
+
+ erp.slot_time = bss_conf->use_short_slot ? SHORT_SLOT_TIME : SLOT_TIME;
+ erp.sifs = SIFS;
+ erp.pifs = bss_conf->use_short_slot ? SHORT_PIFS : PIFS;
+ erp.difs = bss_conf->use_short_slot ? SHORT_DIFS : DIFS;
+ erp.eifs = bss_conf->use_short_slot ? SHORT_EIFS : EIFS;
+
+ erp.basic_rates = bss_conf->basic_rates;
+ erp.beacon_int = bss_conf->beacon_int;
+
+ /* Update the AID, this is needed for dynamic PS support */
+ rt2x00dev->aid = bss_conf->assoc ? bss_conf->aid : 0;
+ rt2x00dev->last_beacon = bss_conf->sync_tsf;
+
+ /* Update global beacon interval time, this is needed for PS support */
+ rt2x00dev->beacon_int = bss_conf->beacon_int;
+
+ if (changed & BSS_CHANGED_HT)
+ erp.ht_opmode = bss_conf->ht_operation_mode;
+
+ rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp, changed);
+}
+
+void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
+ struct antenna_setup config)
+{
+ struct link_ant *ant = &rt2x00dev->link.ant;
+ struct antenna_setup *def = &rt2x00dev->default_ant;
+ struct antenna_setup *active = &rt2x00dev->link.ant.active;
+
+ /*
+ * When the caller tries to send the SW diversity,
+ * we must update the ANTENNA_RX_DIVERSITY flag to
+ * enable the antenna diversity in the link tuner.
+ *
+ * Secondly, we must guarentee we never send the
+ * software antenna diversity command to the driver.
+ */
+ if (!(ant->flags & ANTENNA_RX_DIVERSITY)) {
+ if (config.rx == ANTENNA_SW_DIVERSITY) {
+ ant->flags |= ANTENNA_RX_DIVERSITY;
+
+ if (def->rx == ANTENNA_SW_DIVERSITY)
+ config.rx = ANTENNA_B;
+ else
+ config.rx = def->rx;
+ }
+ } else if (config.rx == ANTENNA_SW_DIVERSITY)
+ config.rx = active->rx;
+
+ if (!(ant->flags & ANTENNA_TX_DIVERSITY)) {
+ if (config.tx == ANTENNA_SW_DIVERSITY) {
+ ant->flags |= ANTENNA_TX_DIVERSITY;
+
+ if (def->tx == ANTENNA_SW_DIVERSITY)
+ config.tx = ANTENNA_B;
+ else
+ config.tx = def->tx;
+ }
+ } else if (config.tx == ANTENNA_SW_DIVERSITY)
+ config.tx = active->tx;
+
+ /*
+ * Antenna setup changes require the RX to be disabled,
+ * else the changes will be ignored by the device.
+ */
+ if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+ rt2x00queue_stop_queue(rt2x00dev->rx);
+
+ /*
+ * Write new antenna setup to device and reset the link tuner.
+ * The latter is required since we need to recalibrate the
+ * noise-sensitivity ratio for the new setup.
+ */
+ rt2x00dev->ops->lib->config_ant(rt2x00dev, &config);
+
+ rt2x00link_reset_tuner(rt2x00dev, true);
+
+ memcpy(active, &config, sizeof(config));
+
+ if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
+ rt2x00queue_start_queue(rt2x00dev->rx);
+}
+
+static u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_conf *conf)
+{
+ struct hw_mode_spec *spec = &rt2x00dev->spec;
+ int center_channel;
+ u16 i;
+
+ /*
+ * Initialize center channel to current channel.
+ */
+ center_channel = spec->channels[conf->chandef.chan->hw_value].channel;
+
+ /*
+ * Adjust center channel to HT40+ and HT40- operation.
+ */
+ if (conf_is_ht40_plus(conf))
+ center_channel += 2;
+ else if (conf_is_ht40_minus(conf))
+ center_channel -= (center_channel == 14) ? 1 : 2;
+
+ for (i = 0; i < spec->num_channels; i++)
+ if (spec->channels[i].channel == center_channel)
+ return i;
+
+ WARN_ON(1);
+ return conf->chandef.chan->hw_value;
+}
+
+void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_conf *conf,
+ unsigned int ieee80211_flags)
+{
+ struct rt2x00lib_conf libconf;
+ u16 hw_value;
+ u16 autowake_timeout;
+ u16 beacon_int;
+ u16 beacon_diff;
+
+ memset(&libconf, 0, sizeof(libconf));
+
+ libconf.conf = conf;
+
+ if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) {
+ if (!conf_is_ht(conf))
+ set_bit(CONFIG_HT_DISABLED, &rt2x00dev->flags);
+ else
+ clear_bit(CONFIG_HT_DISABLED, &rt2x00dev->flags);
+
+ if (conf_is_ht40(conf)) {
+ set_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
+ hw_value = rt2x00ht_center_channel(rt2x00dev, conf);
+ } else {
+ clear_bit(CONFIG_CHANNEL_HT40, &rt2x00dev->flags);
+ hw_value = conf->chandef.chan->hw_value;
+ }
+
+ memcpy(&libconf.rf,
+ &rt2x00dev->spec.channels[hw_value],
+ sizeof(libconf.rf));
+
+ memcpy(&libconf.channel,
+ &rt2x00dev->spec.channels_info[hw_value],
+ sizeof(libconf.channel));
+
+ /* Used for VCO periodic calibration */
+ rt2x00dev->rf_channel = libconf.rf.channel;
+ }
+
+ if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_PS_AUTOWAKE) &&
+ (ieee80211_flags & IEEE80211_CONF_CHANGE_PS))
+ cancel_delayed_work_sync(&rt2x00dev->autowakeup_work);
+
+ /*
+ * Start configuration.
+ */
+ rt2x00dev->ops->lib->config(rt2x00dev, &libconf, ieee80211_flags);
+
+ /*
+ * Some configuration changes affect the link quality
+ * which means we need to reset the link tuner.
+ */
+ if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL)
+ rt2x00link_reset_tuner(rt2x00dev, false);
+
+ if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
+ rt2x00_has_cap_flag(rt2x00dev, REQUIRE_PS_AUTOWAKE) &&
+ (ieee80211_flags & IEEE80211_CONF_CHANGE_PS) &&
+ (conf->flags & IEEE80211_CONF_PS)) {
+ beacon_diff = (long)jiffies - (long)rt2x00dev->last_beacon;
+ beacon_int = msecs_to_jiffies(rt2x00dev->beacon_int);
+
+ if (beacon_diff > beacon_int)
+ beacon_diff = 0;
+
+ autowake_timeout = (conf->max_sleep_period * beacon_int) - beacon_diff;
+ queue_delayed_work(rt2x00dev->workqueue,
+ &rt2x00dev->autowakeup_work,
+ autowake_timeout - 15);
+ }
+
+ if (conf->flags & IEEE80211_CONF_PS)
+ set_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
+ else
+ clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
+
+ rt2x00dev->curr_band = conf->chandef.chan->band;
+ rt2x00dev->curr_freq = conf->chandef.chan->center_freq;
+ rt2x00dev->tx_power = conf->power_level;
+ rt2x00dev->short_retry = conf->short_frame_max_tx_count;
+ rt2x00dev->long_retry = conf->long_frame_max_tx_count;
+}
Code Review / kvmfornfv.git / blobdiff