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95ea3627 | 1 | /* |
811aa9ca | 2 | Copyright (C) 2004 - 2008 rt2x00 SourceForge Project |
95ea3627 ID |
3 | <http://rt2x00.serialmonkey.com> |
4 | ||
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. | |
9 | ||
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. | |
14 | ||
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. | |
19 | */ | |
20 | ||
21 | /* | |
22 | Module: rt2x00lib | |
23 | Abstract: rt2x00 generic configuration routines. | |
24 | */ | |
25 | ||
95ea3627 ID |
26 | #include <linux/kernel.h> |
27 | #include <linux/module.h> | |
28 | ||
29 | #include "rt2x00.h" | |
30 | #include "rt2x00lib.h" | |
31 | ||
6bb40dd1 ID |
32 | void rt2x00lib_config_intf(struct rt2x00_dev *rt2x00dev, |
33 | struct rt2x00_intf *intf, | |
05c914fe | 34 | enum nl80211_iftype type, |
6bb40dd1 | 35 | u8 *mac, u8 *bssid) |
95ea3627 | 36 | { |
6bb40dd1 ID |
37 | struct rt2x00intf_conf conf; |
38 | unsigned int flags = 0; | |
95ea3627 | 39 | |
6bb40dd1 | 40 | conf.type = type; |
feb24691 ID |
41 | |
42 | switch (type) { | |
05c914fe JB |
43 | case NL80211_IFTYPE_ADHOC: |
44 | case NL80211_IFTYPE_AP: | |
a07dbea2 | 45 | case NL80211_IFTYPE_MESH_POINT: |
6bb40dd1 | 46 | conf.sync = TSF_SYNC_BEACON; |
feb24691 | 47 | break; |
05c914fe | 48 | case NL80211_IFTYPE_STATION: |
6bb40dd1 | 49 | conf.sync = TSF_SYNC_INFRA; |
feb24691 ID |
50 | break; |
51 | default: | |
6bb40dd1 | 52 | conf.sync = TSF_SYNC_NONE; |
feb24691 ID |
53 | break; |
54 | } | |
55 | ||
6bb40dd1 ID |
56 | /* |
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. | |
61 | */ | |
62 | memset(&conf.mac, 0, sizeof(conf.mac)); | |
63 | if (mac) | |
64 | memcpy(&conf.mac, mac, ETH_ALEN); | |
65 | ||
66 | memset(&conf.bssid, 0, sizeof(conf.bssid)); | |
67 | if (bssid) | |
68 | memcpy(&conf.bssid, bssid, ETH_ALEN); | |
69 | ||
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; | |
75 | ||
76 | rt2x00dev->ops->lib->config_intf(rt2x00dev, intf, &conf, flags); | |
77 | } | |
78 | ||
72810379 ID |
79 | void rt2x00lib_config_erp(struct rt2x00_dev *rt2x00dev, |
80 | struct rt2x00_intf *intf, | |
81 | struct ieee80211_bss_conf *bss_conf) | |
6bb40dd1 | 82 | { |
72810379 | 83 | struct rt2x00lib_erp erp; |
6bb40dd1 | 84 | |
72810379 ID |
85 | memset(&erp, 0, sizeof(erp)); |
86 | ||
87 | erp.short_preamble = bss_conf->use_short_preamble; | |
e360c4cb ID |
88 | erp.cts_protection = bss_conf->use_cts_prot; |
89 | ||
e4ea1c40 ID |
90 | erp.slot_time = bss_conf->use_short_slot ? SHORT_SLOT_TIME : SLOT_TIME; |
91 | erp.sifs = SIFS; | |
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; | |
6bb40dd1 | 95 | |
bad13639 ID |
96 | erp.ack_timeout = PLCP + erp.difs + GET_DURATION(ACK_SIZE, 10); |
97 | erp.ack_consume_time = SIFS + PLCP + GET_DURATION(ACK_SIZE, 10); | |
6bb40dd1 | 98 | |
72810379 ID |
99 | if (bss_conf->use_short_preamble) { |
100 | erp.ack_timeout += SHORT_PREAMBLE; | |
101 | erp.ack_consume_time += SHORT_PREAMBLE; | |
6bb40dd1 | 102 | } else { |
72810379 ID |
103 | erp.ack_timeout += PREAMBLE; |
104 | erp.ack_consume_time += PREAMBLE; | |
6bb40dd1 ID |
105 | } |
106 | ||
e4ea1c40 ID |
107 | erp.basic_rates = bss_conf->basic_rates; |
108 | ||
3a643d24 | 109 | rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp); |
95ea3627 ID |
110 | } |
111 | ||
0b927a07 ID |
112 | static inline |
113 | enum antenna rt2x00lib_config_antenna_check(enum antenna current_ant, | |
114 | enum antenna default_ant) | |
115 | { | |
116 | if (current_ant != ANTENNA_SW_DIVERSITY) | |
117 | return current_ant; | |
118 | return (default_ant != ANTENNA_SW_DIVERSITY) ? default_ant : ANTENNA_B; | |
119 | } | |
120 | ||
69f81a2c | 121 | void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev, |
6d64360a | 122 | struct antenna_setup *ant) |
69f81a2c | 123 | { |
0b927a07 ID |
124 | struct antenna_setup *def = &rt2x00dev->default_ant; |
125 | struct antenna_setup *active = &rt2x00dev->link.ant.active; | |
126 | ||
6d64360a ID |
127 | /* |
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. | |
0b927a07 ID |
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. | |
6d64360a | 135 | */ |
0b927a07 ID |
136 | ant->rx = rt2x00lib_config_antenna_check(ant->rx, def->rx); |
137 | ant->tx = rt2x00lib_config_antenna_check(ant->tx, def->tx); | |
69f81a2c | 138 | |
0b927a07 | 139 | if (ant->rx == active->rx && ant->tx == active->tx) |
05253c93 ID |
140 | return; |
141 | ||
e25c4bb9 ID |
142 | /* |
143 | * Antenna setup changes require the RX to be disabled, | |
144 | * else the changes will be ignored by the device. | |
145 | */ | |
0262ab0d | 146 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
61667d8d | 147 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK); |
e25c4bb9 | 148 | |
69f81a2c ID |
149 | /* |
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. | |
153 | */ | |
6d64360a | 154 | rt2x00dev->ops->lib->config_ant(rt2x00dev, ant); |
e4ea1c40 | 155 | |
84e3196f | 156 | rt2x00link_reset_tuner(rt2x00dev, true); |
69f81a2c | 157 | |
0b927a07 | 158 | memcpy(active, ant, sizeof(*ant)); |
e25c4bb9 | 159 | |
0262ab0d | 160 | if (test_bit(DEVICE_STATE_ENABLED_RADIO, &rt2x00dev->flags)) |
61667d8d | 161 | rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK); |
69f81a2c ID |
162 | } |
163 | ||
066cb637 | 164 | void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, |
e4ea1c40 ID |
165 | struct ieee80211_conf *conf, |
166 | unsigned int ieee80211_flags) | |
95ea3627 | 167 | { |
5c58ee51 | 168 | struct rt2x00lib_conf libconf; |
95ea3627 | 169 | |
5c58ee51 ID |
170 | memset(&libconf, 0, sizeof(libconf)); |
171 | ||
e4ea1c40 | 172 | libconf.conf = conf; |
5c58ee51 | 173 | |
e4ea1c40 | 174 | if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) { |
5c58ee51 | 175 | memcpy(&libconf.rf, |
8318d78a | 176 | &rt2x00dev->spec.channels[conf->channel->hw_value], |
5c58ee51 | 177 | sizeof(libconf.rf)); |
8c5e7a5f ID |
178 | |
179 | memcpy(&libconf.channel, | |
180 | &rt2x00dev->spec.channels_info[conf->channel->hw_value], | |
181 | sizeof(libconf.channel)); | |
5c58ee51 ID |
182 | } |
183 | ||
5c58ee51 ID |
184 | /* |
185 | * Start configuration. | |
186 | */ | |
e4ea1c40 | 187 | rt2x00dev->ops->lib->config(rt2x00dev, &libconf, ieee80211_flags); |
95ea3627 ID |
188 | |
189 | /* | |
190 | * Some configuration changes affect the link quality | |
191 | * which means we need to reset the link tuner. | |
192 | */ | |
e4ea1c40 | 193 | if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) |
84e3196f | 194 | rt2x00link_reset_tuner(rt2x00dev, false); |
95ea3627 | 195 | |
e4ea1c40 | 196 | rt2x00dev->curr_band = conf->channel->band; |
95ea3627 | 197 | rt2x00dev->tx_power = conf->power_level; |
42c82857 ID |
198 | rt2x00dev->short_retry = conf->short_frame_max_tx_count; |
199 | rt2x00dev->long_retry = conf->long_frame_max_tx_count; | |
16b1951f | 200 | |
e4ea1c40 ID |
201 | rt2x00dev->rx_status.band = conf->channel->band; |
202 | rt2x00dev->rx_status.freq = conf->channel->center_freq; | |
95ea3627 | 203 | } |