Abstract: rt2x00 generic configuration routines.
*/
-/*
- * Set enviroment defines for rt2x00.h
- */
-#define DRV_NAME "rt2x00lib"
-
#include <linux/kernel.h>
#include <linux/module.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
+
+/*
+ * The MAC and BSSID addressess are simple array of bytes,
+ * these arrays are little endian, so when sending the addressess
+ * to the drivers, copy the it into a endian-signed variable.
+ *
+ * Note that all devices (except rt2500usb) have 32 bits
+ * register word sizes. This means that whatever variable we
+ * pass _must_ be a multiple of 32 bits. Otherwise the device
+ * might not accept what we are sending to it.
+ * This will also make it easier for the driver to write
+ * the data to the device.
+ *
+ * Also note that when NULL is passed as address the
+ * 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.
+ */
void rt2x00lib_config_mac_addr(struct rt2x00_dev *rt2x00dev, u8 *mac)
{
+ __le32 reg[2];
+
+ memset(®, 0, sizeof(reg));
if (mac)
- rt2x00dev->ops->lib->config_mac_addr(rt2x00dev, mac);
+ memcpy(®, mac, ETH_ALEN);
+
+ rt2x00dev->ops->lib->config_mac_addr(rt2x00dev, ®[0]);
}
void rt2x00lib_config_bssid(struct rt2x00_dev *rt2x00dev, u8 *bssid)
{
+ __le32 reg[2];
+
+ memset(®, 0, sizeof(reg));
if (bssid)
- rt2x00dev->ops->lib->config_bssid(rt2x00dev, bssid);
+ memcpy(®, bssid, ETH_ALEN);
+
+ rt2x00dev->ops->lib->config_bssid(rt2x00dev, ®[0]);
+}
+
+void rt2x00lib_config_type(struct rt2x00_dev *rt2x00dev, const int type)
+{
+ int tsf_sync;
+
+ switch (type) {
+ case IEEE80211_IF_TYPE_IBSS:
+ case IEEE80211_IF_TYPE_AP:
+ tsf_sync = TSF_SYNC_BEACON;
+ break;
+ case IEEE80211_IF_TYPE_STA:
+ tsf_sync = TSF_SYNC_INFRA;
+ break;
+ default:
+ tsf_sync = TSF_SYNC_NONE;
+ break;
+ }
+
+ rt2x00dev->ops->lib->config_type(rt2x00dev, type, tsf_sync);
}
-void rt2x00lib_config_type(struct rt2x00_dev *rt2x00dev, int type)
+void rt2x00lib_config_antenna(struct rt2x00_dev *rt2x00dev,
+ enum antenna rx, enum antenna tx)
{
- struct interface *intf = &rt2x00dev->interface;
+ struct rt2x00lib_conf libconf;
+
+ libconf.ant.rx = rx;
+ libconf.ant.tx = tx;
- if (!test_bit(INTERFACE_RESUME, &rt2x00dev->flags) &&
- (!!test_bit(INTERFACE_ENABLED, &rt2x00dev->flags) ==
- !!is_interface_present(intf)))
+ if (rx == rt2x00dev->link.ant.active.rx &&
+ tx == rt2x00dev->link.ant.active.tx)
return;
- rt2x00dev->ops->lib->config_type(rt2x00dev, type);
+ /*
+ * 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);
/*
- * Update the configuration flags.
+ * 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.
*/
- if (is_interface_present(intf))
- __set_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
- else
- __clear_bit(INTERFACE_ENABLED, &rt2x00dev->flags);
+ rt2x00dev->ops->lib->config(rt2x00dev, CONFIG_UPDATE_ANTENNA, &libconf);
+ 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);
}
-void rt2x00lib_config(struct rt2x00_dev *rt2x00dev, struct ieee80211_conf *conf)
+void rt2x00lib_config(struct rt2x00_dev *rt2x00dev,
+ struct ieee80211_conf *conf, const int force_config)
{
+ struct rt2x00lib_conf libconf;
+ struct ieee80211_hw_mode *mode;
+ struct ieee80211_rate *rate;
+ struct antenna_setup *default_ant = &rt2x00dev->default_ant;
+ struct antenna_setup *active_ant = &rt2x00dev->link.ant.active;
int flags = 0;
+ int short_slot_time;
/*
- * If we are in RESUME state we should
- * force all configuration options.
+ * In some situations we want to force all configurations
+ * to be reloaded (When resuming for instance).
*/
- if (test_bit(INTERFACE_RESUME, &rt2x00dev->flags)) {
+ if (force_config) {
flags = CONFIG_UPDATE_ALL;
goto config;
}
flags |= CONFIG_UPDATE_CHANNEL;
if (rt2x00dev->tx_power != conf->power_level)
flags |= CONFIG_UPDATE_TXPOWER;
- if (rt2x00dev->rx_status.antenna == conf->antenna_sel_rx)
+
+ /*
+ * 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;
/*
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:
- rt2x00dev->ops->lib->config(rt2x00dev, flags, conf);
+ memset(&libconf, 0, sizeof(libconf));
+
+ if (flags & CONFIG_UPDATE_PHYMODE) {
+ switch (conf->phymode) {
+ case MODE_IEEE80211A:
+ libconf.phymode = HWMODE_A;
+ break;
+ case MODE_IEEE80211B:
+ libconf.phymode = HWMODE_B;
+ break;
+ case MODE_IEEE80211G:
+ libconf.phymode = HWMODE_G;
+ break;
+ default:
+ ERROR(rt2x00dev,
+ "Attempt to configure unsupported mode (%d)"
+ "Defaulting to 802.11b", conf->phymode);
+ libconf.phymode = HWMODE_B;
+ }
+
+ mode = &rt2x00dev->hwmodes[libconf.phymode];
+ rate = &mode->rates[mode->num_rates - 1];
+
+ libconf.basic_rates =
+ DEVICE_GET_RATE_FIELD(rate->val, RATEMASK) & DEV_BASIC_RATEMASK;
+ }
+
+ if (flags & CONFIG_UPDATE_CHANNEL) {
+ memcpy(&libconf.rf,
+ &rt2x00dev->spec.channels[conf->channel_val],
+ 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, flags, &libconf);
/*
* Some configuration changes affect the link quality
if (flags & (CONFIG_UPDATE_CHANNEL | CONFIG_UPDATE_ANTENNA))
rt2x00lib_reset_link_tuner(rt2x00dev);
- rt2x00dev->rx_status.phymode = conf->phymode;
+ if (flags & CONFIG_UPDATE_PHYMODE) {
+ rt2x00dev->curr_hwmode = libconf.phymode;
+ rt2x00dev->rx_status.phymode = conf->phymode;
+ }
+
rt2x00dev->rx_status.freq = conf->freq;
rt2x00dev->rx_status.channel = conf->channel;
rt2x00dev->tx_power = conf->power_level;
- rt2x00dev->rx_status.antenna = conf->antenna_sel_rx;
+
+ if (flags & CONFIG_UPDATE_ANTENNA) {
+ rt2x00dev->link.ant.active.rx = libconf.ant.rx;
+ rt2x00dev->link.ant.active.tx = libconf.ant.tx;
+ }
}
projects / linux-2.6 / blobdiff