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path: root/drivers/net/wireless/rt2x00/rt2x00config.c
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Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00config.c')
-rw-r--r--drivers/net/wireless/rt2x00/rt2x00config.c205
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(&reg, 0, sizeof(reg));
+ if (mac)
+ memcpy(&reg, mac, ETH_ALEN);
+
+ rt2x00dev->ops->lib->config_mac_addr(rt2x00dev, &reg[0]);
+}
+
+void rt2x00lib_config_bssid(struct rt2x00_dev *rt2x00dev, u8 *bssid)
+{
+ __le32 reg[2];
+
+ memset(&reg, 0, sizeof(reg));
+ if (bssid)
+ memcpy(&reg, bssid, ETH_ALEN);
+
+ rt2x00dev->ops->lib->config_bssid(rt2x00dev, &reg[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;
+}