2 Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
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 conf
.sync
= TSF_SYNC_ADHOC
;
46 case NL80211_IFTYPE_AP
:
47 case NL80211_IFTYPE_MESH_POINT
:
48 case NL80211_IFTYPE_WDS
:
49 conf
.sync
= TSF_SYNC_AP_NONE
;
51 case NL80211_IFTYPE_STATION
:
52 conf
.sync
= TSF_SYNC_INFRA
;
55 conf
.sync
= TSF_SYNC_NONE
;
60 * Note that when NULL is passed as address we will send
61 * 00:00:00:00:00 to the device to clear the address.
62 * This will prevent the device being confused when it wants
63 * to ACK frames or consideres itself associated.
65 memset(&conf
.mac
, 0, sizeof(conf
.mac
));
67 memcpy(&conf
.mac
, mac
, ETH_ALEN
);
69 memset(&conf
.bssid
, 0, sizeof(conf
.bssid
));
71 memcpy(&conf
.bssid
, bssid
, ETH_ALEN
);
73 flags
|= CONFIG_UPDATE_TYPE
;
74 if (mac
|| (!rt2x00dev
->intf_ap_count
&& !rt2x00dev
->intf_sta_count
))
75 flags
|= CONFIG_UPDATE_MAC
;
76 if (bssid
|| (!rt2x00dev
->intf_ap_count
&& !rt2x00dev
->intf_sta_count
))
77 flags
|= CONFIG_UPDATE_BSSID
;
79 rt2x00dev
->ops
->lib
->config_intf(rt2x00dev
, intf
, &conf
, flags
);
82 void rt2x00lib_config_erp(struct rt2x00_dev
*rt2x00dev
,
83 struct rt2x00_intf
*intf
,
84 struct ieee80211_bss_conf
*bss_conf
,
87 struct rt2x00lib_erp erp
;
89 memset(&erp
, 0, sizeof(erp
));
91 erp
.short_preamble
= bss_conf
->use_short_preamble
;
92 erp
.cts_protection
= bss_conf
->use_cts_prot
;
94 erp
.slot_time
= bss_conf
->use_short_slot
? SHORT_SLOT_TIME
: SLOT_TIME
;
96 erp
.pifs
= bss_conf
->use_short_slot
? SHORT_PIFS
: PIFS
;
97 erp
.difs
= bss_conf
->use_short_slot
? SHORT_DIFS
: DIFS
;
98 erp
.eifs
= bss_conf
->use_short_slot
? SHORT_EIFS
: EIFS
;
100 erp
.basic_rates
= bss_conf
->basic_rates
;
101 erp
.beacon_int
= bss_conf
->beacon_int
;
103 /* Update global beacon interval time, this is needed for PS support */
104 rt2x00dev
->beacon_int
= bss_conf
->beacon_int
;
106 if (changed
& BSS_CHANGED_HT
)
107 erp
.ht_opmode
= bss_conf
->ht_operation_mode
;
109 rt2x00dev
->ops
->lib
->config_erp(rt2x00dev
, &erp
, changed
);
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 config
)
124 struct link_ant
*ant
= &rt2x00dev
->link
.ant
;
125 struct antenna_setup
*def
= &rt2x00dev
->default_ant
;
126 struct antenna_setup
*active
= &rt2x00dev
->link
.ant
.active
;
129 * Failsafe: Make sure we are not sending the
130 * ANTENNA_SW_DIVERSITY state to the driver.
131 * If that happens, fallback to hardware defaults,
132 * or our own default.
134 if (!(ant
->flags
& ANTENNA_RX_DIVERSITY
))
135 config
.rx
= rt2x00lib_config_antenna_check(config
.rx
, def
->rx
);
136 else if (config
.rx
== ANTENNA_SW_DIVERSITY
)
137 config
.rx
= active
->rx
;
139 if (!(ant
->flags
& ANTENNA_TX_DIVERSITY
))
140 config
.tx
= rt2x00lib_config_antenna_check(config
.tx
, def
->tx
);
141 else if (config
.tx
== ANTENNA_SW_DIVERSITY
)
142 config
.tx
= active
->tx
;
145 * Antenna setup changes require the RX to be disabled,
146 * else the changes will be ignored by the device.
148 if (test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
149 rt2x00dev
->ops
->lib
->stop_queue(rt2x00dev
->rx
);
152 * Write new antenna setup to device and reset the link tuner.
153 * The latter is required since we need to recalibrate the
154 * noise-sensitivity ratio for the new setup.
156 rt2x00dev
->ops
->lib
->config_ant(rt2x00dev
, &config
);
158 rt2x00link_reset_tuner(rt2x00dev
, true);
160 memcpy(active
, &config
, sizeof(config
));
162 if (test_bit(DEVICE_STATE_ENABLED_RADIO
, &rt2x00dev
->flags
))
163 rt2x00dev
->ops
->lib
->start_queue(rt2x00dev
->rx
);
166 void rt2x00lib_config(struct rt2x00_dev
*rt2x00dev
,
167 struct ieee80211_conf
*conf
,
168 unsigned int ieee80211_flags
)
170 struct rt2x00lib_conf libconf
;
173 memset(&libconf
, 0, sizeof(libconf
));
177 if (ieee80211_flags
& IEEE80211_CONF_CHANGE_CHANNEL
) {
178 if (conf_is_ht40(conf
)) {
179 __set_bit(CONFIG_CHANNEL_HT40
, &rt2x00dev
->flags
);
180 hw_value
= rt2x00ht_center_channel(rt2x00dev
, conf
);
182 __clear_bit(CONFIG_CHANNEL_HT40
, &rt2x00dev
->flags
);
183 hw_value
= conf
->channel
->hw_value
;
187 &rt2x00dev
->spec
.channels
[hw_value
],
190 memcpy(&libconf
.channel
,
191 &rt2x00dev
->spec
.channels_info
[hw_value
],
192 sizeof(libconf
.channel
));
196 * Start configuration.
198 rt2x00dev
->ops
->lib
->config(rt2x00dev
, &libconf
, ieee80211_flags
);
201 * Some configuration changes affect the link quality
202 * which means we need to reset the link tuner.
204 if (ieee80211_flags
& IEEE80211_CONF_CHANGE_CHANNEL
)
205 rt2x00link_reset_tuner(rt2x00dev
, false);
207 rt2x00dev
->curr_band
= conf
->channel
->band
;
208 rt2x00dev
->curr_freq
= conf
->channel
->center_freq
;
209 rt2x00dev
->tx_power
= conf
->power_level
;
210 rt2x00dev
->short_retry
= conf
->short_frame_max_tx_count
;
211 rt2x00dev
->long_retry
= conf
->long_frame_max_tx_count
;