// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
|
<http://rt2x00.serialmonkey.com>
|
|
*/
|
|
/*
|
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 considers 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,
|
u32 changed)
|
{
|
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 the AID, this is needed for dynamic PS support */
|
rt2x00dev->aid = bss_conf->assoc ? bss_conf->aid : 0;
|
rt2x00dev->last_beacon = bss_conf->sync_tsf;
|
|
/* Update global beacon interval time, this is needed for PS support */
|
rt2x00dev->beacon_int = bss_conf->beacon_int;
|
|
if (changed & BSS_CHANGED_HT)
|
erp.ht_opmode = bss_conf->ht_operation_mode;
|
|
rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp, changed);
|
}
|
|
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;
|
|
/*
|
* When the caller tries to send the SW diversity,
|
* we must update the ANTENNA_RX_DIVERSITY flag to
|
* enable the antenna diversity in the link tuner.
|
*
|
* Secondly, we must guarentee we never send the
|
* software antenna diversity command to the driver.
|
*/
|
if (!(ant->flags & ANTENNA_RX_DIVERSITY)) {
|
if (config.rx == ANTENNA_SW_DIVERSITY) {
|
ant->flags |= ANTENNA_RX_DIVERSITY;
|
|
if (def->rx == ANTENNA_SW_DIVERSITY)
|
config.rx = ANTENNA_B;
|
else
|
config.rx = def->rx;
|
}
|
} else if (config.rx == ANTENNA_SW_DIVERSITY)
|
config.rx = active->rx;
|
|
if (!(ant->flags & ANTENNA_TX_DIVERSITY)) {
|
if (config.tx == ANTENNA_SW_DIVERSITY) {
|
ant->flags |= ANTENNA_TX_DIVERSITY;
|
|
if (def->tx == ANTENNA_SW_DIVERSITY)
|
config.tx = ANTENNA_B;
|
else
|
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))
|
rt2x00queue_stop_queue(rt2x00dev->rx);
|
|
/*
|
* 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))
|
rt2x00queue_start_queue(rt2x00dev->rx);
|
}
|
|
static u16 rt2x00ht_center_channel(struct rt2x00_dev *rt2x00dev,
|
struct ieee80211_conf *conf)
|
{
|
struct hw_mode_spec *spec = &rt2x00dev->spec;
|
int center_channel;
|
u16 i;
|
|
/*
|
* Initialize center channel to current channel.
|
*/
|
center_channel = spec->channels[conf->chandef.chan->hw_value].channel;
|
|
/*
|
* Adjust center channel to HT40+ and HT40- operation.
|
*/
|
if (conf_is_ht40_plus(conf))
|
center_channel += 2;
|
else if (conf_is_ht40_minus(conf))
|
center_channel -= (center_channel == 14) ? 1 : 2;
|
|
for (i = 0; i < spec->num_channels; i++)
|
if (spec->channels[i].channel == center_channel)
|
return i;
|
|
WARN_ON(1);
|
return conf->chandef.chan->hw_value;
|
}
|
|
void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
|
struct ieee80211_conf *conf,
|
unsigned int ieee80211_flags)
|
{
|
struct rt2x00lib_conf libconf;
|
u16 hw_value;
|
u16 autowake_timeout;
|
u16 beacon_int;
|
u16 beacon_diff;
|
|
memset(&libconf, 0, sizeof(libconf));
|
|
libconf.conf = conf;
|
|
if (ieee80211_flags & IEEE80211_CONF_CHANGE_CHANNEL) {
|
if (!conf_is_ht(conf))
|
set_bit(CONFIG_HT_DISABLED, &rt2x00dev->flags);
|
else
|
clear_bit(CONFIG_HT_DISABLED, &rt2x00dev->flags);
|
|
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->chandef.chan->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));
|
|
/* Used for VCO periodic calibration */
|
rt2x00dev->rf_channel = libconf.rf.channel;
|
}
|
|
if (rt2x00_has_cap_flag(rt2x00dev, REQUIRE_PS_AUTOWAKE) &&
|
(ieee80211_flags & IEEE80211_CONF_CHANGE_PS))
|
cancel_delayed_work_sync(&rt2x00dev->autowakeup_work);
|
|
/*
|
* Start configuration.
|
*/
|
rt2x00dev->ops->lib->config(rt2x00dev, &libconf, ieee80211_flags);
|
|
if (conf->flags & IEEE80211_CONF_PS)
|
set_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
|
else
|
clear_bit(CONFIG_POWERSAVING, &rt2x00dev->flags);
|
|
if (conf->flags & IEEE80211_CONF_MONITOR)
|
set_bit(CONFIG_MONITORING, &rt2x00dev->flags);
|
else
|
clear_bit(CONFIG_MONITORING, &rt2x00dev->flags);
|
|
rt2x00dev->curr_band = conf->chandef.chan->band;
|
rt2x00dev->curr_freq = conf->chandef.chan->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;
|
|
/*
|
* 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);
|
|
if (test_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags) &&
|
rt2x00_has_cap_flag(rt2x00dev, REQUIRE_PS_AUTOWAKE) &&
|
(ieee80211_flags & IEEE80211_CONF_CHANGE_PS) &&
|
(conf->flags & IEEE80211_CONF_PS)) {
|
beacon_diff = (long)jiffies - (long)rt2x00dev->last_beacon;
|
beacon_int = msecs_to_jiffies(rt2x00dev->beacon_int);
|
|
if (beacon_diff > beacon_int)
|
beacon_diff = 0;
|
|
autowake_timeout = (conf->ps_dtim_period * beacon_int) - beacon_diff;
|
queue_delayed_work(rt2x00dev->workqueue,
|
&rt2x00dev->autowakeup_work,
|
autowake_timeout - 15);
|
}
|
}
|
