diff options
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00config.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00config.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00config.c b/drivers/net/wireless/rt2x00/rt2x00config.c new file mode 100644 index 00000000000..12914cf7156 --- /dev/null +++ b/drivers/net/wireless/rt2x00/rt2x00config.c @@ -0,0 +1,205 @@ +/* + Copyright (C) 2004 - 2007 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. + */ + +/* + * 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) + 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) + 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(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; + 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.phymode != conf->phymode) + flags |= CONFIG_UPDATE_PHYMODE; + if (rt2x00dev->rx_status.channel != conf->channel) + flags |= CONFIG_UPDATE_CHANNEL; + if (rt2x00dev->tx_power != conf->power_level) + flags |= CONFIG_UPDATE_TXPOWER; + if (rt2x00dev->rx_status.antenna == conf->antenna_sel_rx) + 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) { + 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_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 + * which means we need to reset the link tuner. + */ + if (flags & (CONFIG_UPDATE_CHANNEL | CONFIG_UPDATE_ANTENNA)) + rt2x00lib_reset_link_tuner(rt2x00dev); + + 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; +} |