3a643d244f
rt73usb and rt2500usb used in_atomic to determine if a configuration step should be rescheduled or not. Since in_atomic() is not a valid method to determine if sleeping is allowed we should fix the way this is handled by adding a new flag to rt2x00. In addition mark LED class support for the drivers broken since that also uses the broken in_atomic() method but so far no solution exists to have LED triggers work only in scheduled context. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
301 lines
8.6 KiB
C
301 lines
8.6 KiB
C
/*
|
|
Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
|
|
<http://rt2x00.serialmonkey.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the
|
|
Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
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 ieee80211_if_types type,
|
|
u8 *mac, u8 *bssid)
|
|
{
|
|
struct rt2x00intf_conf conf;
|
|
unsigned int flags = 0;
|
|
|
|
conf.type = type;
|
|
|
|
switch (type) {
|
|
case IEEE80211_IF_TYPE_IBSS:
|
|
case IEEE80211_IF_TYPE_AP:
|
|
conf.sync = TSF_SYNC_BEACON;
|
|
break;
|
|
case IEEE80211_IF_TYPE_STA:
|
|
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 consideres 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)
|
|
{
|
|
struct rt2x00lib_erp erp;
|
|
|
|
memset(&erp, 0, sizeof(erp));
|
|
|
|
erp.short_preamble = bss_conf->use_short_preamble;
|
|
erp.ack_timeout = PLCP + get_duration(ACK_SIZE, 10);
|
|
erp.ack_consume_time = SIFS + PLCP + get_duration(ACK_SIZE, 10);
|
|
|
|
if (rt2x00dev->hw->conf.flags & IEEE80211_CONF_SHORT_SLOT_TIME)
|
|
erp.ack_timeout += SHORT_DIFS;
|
|
else
|
|
erp.ack_timeout += DIFS;
|
|
|
|
if (bss_conf->use_short_preamble) {
|
|
erp.ack_timeout += SHORT_PREAMBLE;
|
|
erp.ack_consume_time += SHORT_PREAMBLE;
|
|
} else {
|
|
erp.ack_timeout += PREAMBLE;
|
|
erp.ack_consume_time += PREAMBLE;
|
|
}
|
|
|
|
rt2x00dev->ops->lib->config_erp(rt2x00dev, &erp);
|
|
}
|
|
|
|
void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
|
|
enum antenna rx, enum antenna tx)
|
|
{
|
|
struct rt2x00lib_conf libconf;
|
|
|
|
libconf.ant.rx = rx;
|
|
libconf.ant.tx = tx;
|
|
|
|
if (rx == rt2x00dev->link.ant.active.rx &&
|
|
tx == rt2x00dev->link.ant.active.tx)
|
|
return;
|
|
|
|
/*
|
|
* Antenna setup changes require the RX to be disabled,
|
|
* else the changes will be ignored by the device.
|
|
*/
|
|
if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
|
|
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_OFF_LINK);
|
|
|
|
/*
|
|
* 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(rt2x00dev, &libconf, CONFIG_UPDATE_ANTENNA);
|
|
rt2x00lib_reset_link_tuner(rt2x00dev);
|
|
|
|
rt2x00dev->link.ant.active.rx = libconf.ant.rx;
|
|
rt2x00dev->link.ant.active.tx = libconf.ant.tx;
|
|
|
|
if (test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags))
|
|
rt2x00lib_toggle_rx(rt2x00dev, STATE_RADIO_RX_ON_LINK);
|
|
}
|
|
|
|
static u32 rt2x00lib_get_basic_rates(struct ieee80211_supported_band *band)
|
|
{
|
|
const struct rt2x00_rate *rate;
|
|
unsigned int i;
|
|
u32 mask = 0;
|
|
|
|
for (i = 0; i < band->n_bitrates; i++) {
|
|
rate = rt2x00_get_rate(band->bitrates[i].hw_value);
|
|
if (rate->flags & DEV_RATE_BASIC)
|
|
mask |= rate->ratemask;
|
|
}
|
|
|
|
return mask;
|
|
}
|
|
|
|
void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
|
|
struct ieee80211_conf *conf, const int force_config)
|
|
{
|
|
struct rt2x00lib_conf libconf;
|
|
struct ieee80211_supported_band *band;
|
|
struct antenna_setup *default_ant = &rt2x00dev->default_ant;
|
|
struct antenna_setup *active_ant = &rt2x00dev->link.ant.active;
|
|
int flags = 0;
|
|
int short_slot_time;
|
|
|
|
/*
|
|
* In some situations we want to force all configurations
|
|
* to be reloaded (When resuming for instance).
|
|
*/
|
|
if (force_config) {
|
|
flags = CONFIG_UPDATE_ALL;
|
|
goto config;
|
|
}
|
|
|
|
/*
|
|
* Check which configuration options have been
|
|
* updated and should be send to the device.
|
|
*/
|
|
if (rt2x00dev->rx_status.band != conf->channel->band)
|
|
flags |= CONFIG_UPDATE_PHYMODE;
|
|
if (rt2x00dev->rx_status.freq != conf->channel->center_freq)
|
|
flags |= CONFIG_UPDATE_CHANNEL;
|
|
if (rt2x00dev->tx_power != conf->power_level)
|
|
flags |= CONFIG_UPDATE_TXPOWER;
|
|
|
|
/*
|
|
* Determining changes in the antenna setups request several checks:
|
|
* antenna_sel_{r,t}x = 0
|
|
* -> Does active_{r,t}x match default_{r,t}x
|
|
* -> Is default_{r,t}x SW_DIVERSITY
|
|
* antenna_sel_{r,t}x = 1/2
|
|
* -> Does active_{r,t}x match antenna_sel_{r,t}x
|
|
* The reason for not updating the antenna while SW diversity
|
|
* should be used is simple: Software diversity means that
|
|
* we should switch between the antenna's based on the
|
|
* quality. This means that the current antenna is good enough
|
|
* to work with untill the link tuner decides that an antenna
|
|
* switch should be performed.
|
|
*/
|
|
if (!conf->antenna_sel_rx &&
|
|
default_ant->rx != ANTENNA_SW_DIVERSITY &&
|
|
default_ant->rx != active_ant->rx)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
else if (conf->antenna_sel_rx &&
|
|
conf->antenna_sel_rx != active_ant->rx)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
|
|
if (!conf->antenna_sel_tx &&
|
|
default_ant->tx != ANTENNA_SW_DIVERSITY &&
|
|
default_ant->tx != active_ant->tx)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
else if (conf->antenna_sel_tx &&
|
|
conf->antenna_sel_tx != active_ant->tx)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
|
|
flags |= CONFIG_UPDATE_ANTENNA;
|
|
|
|
/*
|
|
* The following configuration options are never
|
|
* stored anywhere and will always be updated.
|
|
*/
|
|
flags |= CONFIG_UPDATE_SLOT_TIME;
|
|
flags |= CONFIG_UPDATE_BEACON_INT;
|
|
|
|
/*
|
|
* We have determined what options should be updated,
|
|
* now precalculate device configuration values depending
|
|
* on what configuration options need to be updated.
|
|
*/
|
|
config:
|
|
memset(&libconf, 0, sizeof(libconf));
|
|
|
|
if (flags & CONFIG_UPDATE_PHYMODE) {
|
|
band = &rt2x00dev->bands[conf->channel->band];
|
|
|
|
libconf.band = conf->channel->band;
|
|
libconf.basic_rates = rt2x00lib_get_basic_rates(band);
|
|
}
|
|
|
|
if (flags & CONFIG_UPDATE_CHANNEL) {
|
|
memcpy(&libconf.rf,
|
|
&rt2x00dev->spec.channels[conf->channel->hw_value],
|
|
sizeof(libconf.rf));
|
|
}
|
|
|
|
if (flags & CONFIG_UPDATE_ANTENNA) {
|
|
if (conf->antenna_sel_rx)
|
|
libconf.ant.rx = conf->antenna_sel_rx;
|
|
else if (default_ant->rx != ANTENNA_SW_DIVERSITY)
|
|
libconf.ant.rx = default_ant->rx;
|
|
else if (active_ant->rx == ANTENNA_SW_DIVERSITY)
|
|
libconf.ant.rx = ANTENNA_B;
|
|
|
|
if (conf->antenna_sel_tx)
|
|
libconf.ant.tx = conf->antenna_sel_tx;
|
|
else if (default_ant->tx != ANTENNA_SW_DIVERSITY)
|
|
libconf.ant.tx = default_ant->tx;
|
|
else if (active_ant->tx == ANTENNA_SW_DIVERSITY)
|
|
libconf.ant.tx = ANTENNA_B;
|
|
}
|
|
|
|
if (flags & CONFIG_UPDATE_SLOT_TIME) {
|
|
short_slot_time = conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME;
|
|
|
|
libconf.slot_time =
|
|
short_slot_time ? SHORT_SLOT_TIME : SLOT_TIME;
|
|
libconf.sifs = SIFS;
|
|
libconf.pifs = short_slot_time ? SHORT_PIFS : PIFS;
|
|
libconf.difs = short_slot_time ? SHORT_DIFS : DIFS;
|
|
libconf.eifs = EIFS;
|
|
}
|
|
|
|
libconf.conf = conf;
|
|
|
|
/*
|
|
* Start configuration.
|
|
*/
|
|
rt2x00dev->ops->lib->config(rt2x00dev, &libconf, flags);
|
|
|
|
/*
|
|
* Some configuration changes affect the link quality
|
|
* which means we need to reset the link tuner.
|
|
*/
|
|
if (flags & (CONFIG_UPDATE_CHANNEL | CONFIG_UPDATE_ANTENNA))
|
|
rt2x00lib_reset_link_tuner(rt2x00dev);
|
|
|
|
if (flags & CONFIG_UPDATE_PHYMODE) {
|
|
rt2x00dev->curr_band = conf->channel->band;
|
|
rt2x00dev->rx_status.band = conf->channel->band;
|
|
}
|
|
|
|
rt2x00dev->rx_status.freq = conf->channel->center_freq;
|
|
rt2x00dev->tx_power = conf->power_level;
|
|
|
|
if (flags & CONFIG_UPDATE_ANTENNA) {
|
|
rt2x00dev->link.ant.active.rx = libconf.ant.rx;
|
|
rt2x00dev->link.ant.active.tx = libconf.ant.tx;
|
|
}
|
|
}
|