2 Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
3 <http://rt2x00.serialmonkey.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the
17 Free Software Foundation, Inc.,
18 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 Abstract: rt2x00 generic configuration routines.
26 #include <linux/kernel.h>
27 #include <linux/module.h>
30 #include "rt2x00lib.h"
32 void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev,
33 struct rt2x00_intf *intf,
34 enum nl80211_iftype type,
37 struct rt2x00intf_conf conf;
38 unsigned int flags = 0;
43 case NL80211_IFTYPE_ADHOC:
44 case NL80211_IFTYPE_AP:
45 case NL80211_IFTYPE_MESH_POINT:
46 conf.sync = TSF_SYNC_BEACON;
48 case NL80211_IFTYPE_STATION:
49 conf.sync = TSF_SYNC_INFRA;
52 conf.sync = TSF_SYNC_NONE;
57 * Note that when NULL is passed as address we will send
58 * 00:00:00:00:00 to the device to clear the address.
59 * This will prevent the device being confused when it wants
60 * to ACK frames or consideres itself associated.
62 memset(&conf.mac, 0, sizeof(conf.mac));
64 memcpy(&conf.mac, mac, ETH_ALEN);
66 memset(&conf.bssid, 0, sizeof(conf.bssid));
68 memcpy(&conf.bssid, bssid, ETH_ALEN);
70 flags |= CONFIG_UPDATE_TYPE;
71 if (mac || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
72 flags |= CONFIG_UPDATE_MAC;
73 if (bssid || (!rt2x00dev->intf_ap_count && !rt2x00dev->intf_sta_count))
74 flags |= CONFIG_UPDATE_BSSID;
76 rt2x00dev->ops->lib->config_intf(rt2x00dev, intf, &conf, flags);
79 void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev,
80 struct rt2x00_intf *intf,
81 struct ieee80211_bss_conf *bss_conf)
83 struct rt2x00lib_erp erp;
85 memset(&erp, 0, sizeof(erp));
87 erp.short_preamble = bss_conf->use_short_preamble;
88 erp.cts_protection = bss_conf->use_cts_prot;
90 erp.slot_time = bss_conf->use_short_slot ? SHORT_SLOT_TIME : SLOT_TIME;
92 erp.pifs = bss_conf->use_short_slot ? SHORT_PIFS : PIFS;
93 erp.difs = bss_conf->use_short_slot ? SHORT_DIFS : DIFS;
94 erp.eifs = bss_conf->use_short_slot ? SHORT_EIFS : EIFS;
96 erp.ack_timeout = PLCP + erp.difs + GET_DURATION(ACK_SIZE, 10);
97 erp.ack_consume_time = SIFS + PLCP + GET_DURATION(ACK_SIZE, 10);
99 if (bss_conf->use_short_preamble) {
100 erp.ack_timeout += SHORT_PREAMBLE;
101 erp.ack_consume_time += SHORT_PREAMBLE;
103 erp.ack_timeout += PREAMBLE;
104 erp.ack_consume_time += PREAMBLE;
107 erp.basic_rates = bss_conf->basic_rates;
109 rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp);
113 enum antenna rt2x00lib_config_antenna_check(enum antenna current_ant,
114 enum antenna default_ant)
116 if (current_ant != ANTENNA_SW_DIVERSITY)
118 return (default_ant != ANTENNA_SW_DIVERSITY) ? default_ant : ANTENNA_B;
121 void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
122 struct antenna_setup *ant)
124 struct antenna_setup *def = &rt2x00dev->default_ant;
125 struct antenna_setup *active = &rt2x00dev->link.ant.active;
128 * Failsafe: Make sure we are not sending the
129 * ANTENNA_SW_DIVERSITY state to the driver.
130 * If that happes fallback to hardware default,
131 * or our own default.
132 * The calls to rt2x00lib_config_antenna_check()
133 * might have caused that we restore back to the already
134 * active setting. If that has happened we can quit.
136 ant->rx = rt2x00lib_config_antenna_check(ant->rx, def->rx);
137 ant->tx = rt2x00lib_config_antenna_check(ant->tx, def->tx);
139 if (ant->rx == active->rx && ant->tx == active->tx)
143 * Antenna setup changes require the RX to be disabled,
144 * else the changes will be ignored by the device.
146 if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
147 rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
150 * Write new antenna setup to device and reset the link tuner.
151 * The latter is required since we need to recalibrate the
152 * noise-sensitivity ratio for the new setup.
154 rt2x00dev->ops->lib->config_ant(rt2x00dev, ant);
156 rt2x00link_reset_tuner(rt2x00dev, true);
158 memcpy(active, ant, sizeof(*ant));
160 if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags))
161 rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
164 void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
165 struct ieee80211_conf *conf,
166 unsigned int ieee80211_flags)
168 struct rt2x00lib_conf libconf;
170 memset(&libconf, 0, sizeof(libconf));
174 if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) {
176 &rt2x00dev->spec.channels[conf->channel->hw_value],
179 memcpy(&libconf.channel,
180 &rt2x00dev->spec.channels_info[conf->channel->hw_value],
181 sizeof(libconf.channel));
185 * Start configuration.
187 rt2x00dev->ops->lib->config(rt2x00dev, &libconf, ieee80211_flags);
190 * Some configuration changes affect the link quality
191 * which means we need to reset the link tuner.
193 if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL)
194 rt2x00link_reset_tuner(rt2x00dev, false);
196 rt2x00dev->curr_band = conf->channel->band;
197 rt2x00dev->tx_power = conf->power_level;
198 rt2x00dev->short_retry = conf->short_frame_max_tx_count;
199 rt2x00dev->long_retry = conf->long_frame_max_tx_count;
201 rt2x00dev->rx_status.band = conf->channel->band;
202 rt2x00dev->rx_status.freq = conf->channel->center_freq;