| /* |
| 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, write to the |
| Free Software Foundation, Inc., |
| 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| */ |
| |
| /* |
| 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 consideres 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) |
| { |
| 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 global beacon interval time, this is needed for PS support */ |
| rt2x00dev->beacon_int = bss_conf->beacon_int; |
| |
| rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp); |
| } |
| |
| static inline |
| enum antenna rt2x00lib_config_antenna_check(enum antenna current_ant, |
| enum antenna default_ant) |
| { |
| if (current_ant != ANTENNA_SW_DIVERSITY) |
| return current_ant; |
| return (default_ant != ANTENNA_SW_DIVERSITY) ? default_ant : ANTENNA_B; |
| } |
| |
| 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; |
| |
| /* |
| * Failsafe: Make sure we are not sending the |
| * ANTENNA_SW_DIVERSITY state to the driver. |
| * If that happens, fallback to hardware defaults, |
| * or our own default. |
| */ |
| if (!(ant->flags & ANTENNA_RX_DIVERSITY)) |
| config.rx = rt2x00lib_config_antenna_check(config.rx, def->rx); |
| else if(config.rx == ANTENNA_SW_DIVERSITY) |
| config.rx = active->rx; |
| |
| if (!(ant->flags & ANTENNA_TX_DIVERSITY)) |
| config.tx = rt2x00lib_config_antenna_check(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)) |
| rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK); |
| |
| /* |
| * 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)) |
| rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK); |
| } |
| |
| void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, |
| struct ieee80211_conf *conf, |
| unsigned int ieee80211_flags) |
| { |
| struct rt2x00lib_conf libconf; |
| u16 hw_value; |
| |
| memset(&libconf, 0, sizeof(libconf)); |
| |
| libconf.conf = conf; |
| |
| if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) { |
| 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->channel->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)); |
| } |
| |
| /* |
| * 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); |
| |
| rt2x00dev->curr_band = conf->channel->band; |
| rt2x00dev->curr_freq = conf->channel->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; |
| } |