2 Copyright (C) 2004 - 2009 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
,
35 const u8
*mac
, const u8
*bssid
)
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 case NL80211_IFTYPE_WDS
:
47 conf
.sync
= TSF_SYNC_BEACON
;
49 case NL80211_IFTYPE_STATION
:
50 conf
.sync
= TSF_SYNC_INFRA
;
53 conf
.sync
= TSF_SYNC_NONE
;
58 * Note that when NULL is passed as address we will send
59 * 00:00:00:00:00 to the device to clear the address.
60 * This will prevent the device being confused when it wants
61 * to ACK frames or consideres itself associated.
63 memset(&conf
.mac
, 0, sizeof(conf
.mac
));
65 memcpy(&conf
.mac
, mac
, ETH_ALEN
);
67 memset(&conf
.bssid
, 0, sizeof(conf
.bssid
));
69 memcpy(&conf
.bssid
, bssid
, ETH_ALEN
);
71 flags
|= CONFIG_UPDATE_TYPE
;
72 if (mac
|| (!rt2x00dev
->intf_ap_count
&& !rt2x00dev
->intf_sta_count
))
73 flags
|= CONFIG_UPDATE_MAC
;
74 if (bssid
|| (!rt2x00dev
->intf_ap_count
&& !rt2x00dev
->intf_sta_count
))
75 flags
|= CONFIG_UPDATE_BSSID
;
77 rt2x00dev
->ops
->lib
->config_intf(rt2x00dev
, intf
, &conf
, flags
);
80 void rt2x00lib_config_erp(struct rt2x00_dev
*rt2x00dev
,
81 struct rt2x00_intf
*intf
,
82 struct ieee80211_bss_conf
*bss_conf
)
84 struct rt2x00lib_erp erp
;
86 memset(&erp
, 0, sizeof(erp
));
88 erp
.short_preamble
= bss_conf
->use_short_preamble
;
89 erp
.cts_protection
= bss_conf
->use_cts_prot
;
91 erp
.slot_time
= bss_conf
->use_short_slot
? SHORT_SLOT_TIME
: SLOT_TIME
;
93 erp
.pifs
= bss_conf
->use_short_slot
? SHORT_PIFS
: PIFS
;
94 erp
.difs
= bss_conf
->use_short_slot
? SHORT_DIFS
: DIFS
;
95 erp
.eifs
= bss_conf
->use_short_slot
? SHORT_EIFS
: EIFS
;
97 erp
.ack_timeout
= PLCP
+ erp
.difs
+ GET_DURATION(ACK_SIZE
, 10);
98 erp
.ack_consume_time
= SIFS
+ PLCP
+ GET_DURATION(ACK_SIZE
, 10);
100 if (bss_conf
->use_short_preamble
) {
101 erp
.ack_timeout
+= SHORT_PREAMBLE
;
102 erp
.ack_consume_time
+= SHORT_PREAMBLE
;
104 erp
.ack_timeout
+= PREAMBLE
;
105 erp
.ack_consume_time
+= PREAMBLE
;
108 erp
.basic_rates
= bss_conf
->basic_rates
;
109 erp
.beacon_int
= bss_conf
->beacon_int
;
111 /* Update global beacon interval time, this is needed for PS support */
112 rt2x00dev
->beacon_int
= bss_conf
->beacon_int
;
114 rt2x00dev
->ops
->lib
->config_erp(rt2x00dev
, &erp
);
118 enum antenna
rt2x00lib_config_antenna_check(enum antenna current_ant
,
119 enum antenna default_ant
)
121 if (current_ant
!= ANTENNA_SW_DIVERSITY
)
123 return (default_ant
!= ANTENNA_SW_DIVERSITY
) ? default_ant
: ANTENNA_B
;
126 void rt2x00lib_config_antenna(struct rt2x00_dev
*rt2x00dev
,
127 struct antenna_setup
*ant
)
129 struct antenna_setup
*def
= &rt2x00dev
->default_ant
;
130 struct antenna_setup
*active
= &rt2x00dev
->link
.ant
.active
;
133 * Failsafe: Make sure we are not sending the
134 * ANTENNA_SW_DIVERSITY state to the driver.
135 * If that happes fallback to hardware default,
136 * or our own default.
137 * The calls to rt2x00lib_config_antenna_check()
138 * might have caused that we restore back to the already
139 * active setting. If that has happened we can quit.
141 ant
->rx
= rt2x00lib_config_antenna_check(ant
->rx
, def
->rx
);
142 ant
->tx
= rt2x00lib_config_antenna_check(ant
->tx
, def
->tx
);
144 if (ant
->rx
== active
->rx
&& ant
->tx
== active
->tx
)
148 * Antenna setup changes require the RX to be disabled,
149 * else the changes will be ignored by the device.
151 if (test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
152 rt2x00lib_toggle_rx(rt2x00dev
, STATE_RADIO_RX_OFF_LINK
);
155 * Write new antenna setup to device and reset the link tuner.
156 * The latter is required since we need to recalibrate the
157 * noise-sensitivity ratio for the new setup.
159 rt2x00dev
->ops
->lib
->config_ant(rt2x00dev
, ant
);
161 rt2x00link_reset_tuner(rt2x00dev
, true);
163 memcpy(active
, ant
, sizeof(*ant
));
165 if (test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
166 rt2x00lib_toggle_rx(rt2x00dev
, STATE_RADIO_RX_ON_LINK
);
169 void rt2x00lib_config(struct rt2x00_dev
*rt2x00dev
,
170 struct ieee80211_conf
*conf
,
171 unsigned int ieee80211_flags
)
173 struct rt2x00lib_conf libconf
;
175 memset(&libconf
, 0, sizeof(libconf
));
179 if (ieee80211_flags
& IEEE80211_CONF_CHANGE_CHANNEL
) {
180 if (conf_is_ht40(conf
))
181 __set_bit(CONFIG_CHANNEL_HT40
, &rt2x00dev
->flags
);
183 __clear_bit(CONFIG_CHANNEL_HT40
, &rt2x00dev
->flags
);
186 &rt2x00dev
->spec
.channels
[conf
->channel
->hw_value
],
189 memcpy(&libconf
.channel
,
190 &rt2x00dev
->spec
.channels_info
[conf
->channel
->hw_value
],
191 sizeof(libconf
.channel
));
195 * Start configuration.
197 rt2x00dev
->ops
->lib
->config(rt2x00dev
, &libconf
, ieee80211_flags
);
200 * Some configuration changes affect the link quality
201 * which means we need to reset the link tuner.
203 if (ieee80211_flags
& IEEE80211_CONF_CHANGE_CHANNEL
)
204 rt2x00link_reset_tuner(rt2x00dev
, false);
206 rt2x00dev
->curr_band
= conf
->channel
->band
;
207 rt2x00dev
->tx_power
= conf
->power_level
;
208 rt2x00dev
->short_retry
= conf
->short_frame_max_tx_count
;
209 rt2x00dev
->long_retry
= conf
->long_frame_max_tx_count
;
211 rt2x00dev
->rx_status
.band
= conf
->channel
->band
;
212 rt2x00dev
->rx_status
.freq
= conf
->channel
->center_freq
;