path: root/drivers/net/wireless/bcm43xx/bcm43xx_wx.c

/*

  Broadcom BCM43xx wireless driver

  Copyright (c) 2005 Martin Langer <martin-langer@gmx.de>,
                     Stefano Brivio <st3@riseup.net>
                     Michael Buesch <mbuesch@freenet.de>
                     Danny van Dyk <kugelfang@gentoo.org>
                     Andreas Jaggi <andreas.jaggi@waterwave.ch>

  Some parts of the code in this file are derived from the ipw2200
  driver  Copyright(c) 2003 - 2004 Intel Corporation.

  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; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

#include <linux/wireless.h>
#include <net/iw_handler.h>
#include <net/ieee80211softmac.h>
#include <net/ieee80211softmac_wx.h>
#include <linux/capability.h>
#include <linux/delay.h>

#include "bcm43xx.h"
#include "bcm43xx_wx.h"
#include "bcm43xx_main.h"
#include "bcm43xx_radio.h"
#include "bcm43xx_phy.h"


/* The WIRELESS_EXT version, which is implemented by this driver. */
#define BCM43xx_WX_VERSION	18

#define MAX_WX_STRING		80

static int bcm43xx_wx_get_name(struct net_device *net_dev,
                               struct iw_request_info *info,
			       union iwreq_data *data,
			       char *extra)
{
	struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
	int i;
	struct bcm43xx_phyinfo *phy;
	char suffix[7] = { 0 };
	int have_a = 0, have_b = 0, have_g = 0;

	mutex_lock(&bcm->mutex);
	for (i = 0; i < bcm->nr_80211_available; i++) {
		phy = &(bcm->core_80211_ext[i].phy);
		switch (phy->type) {
		case BCM43xx_PHYTYPE_A:
			have_a = 1;
			break;
		case BCM43xx_PHYTYPE_G:
			have_g = 1;
		case BCM43xx_PHYTYPE_B:
			have_b = 1;
			break;
		default:
			assert(0);
		}
	}
	mutex_unlock(&bcm->mutex);

	i = 0;
	if (have_a) {
		suffix[i++] = 'a';
		suffix[i++] = '/';
	}
	if (have_b) {
		suffix[i++] = 'b';
		suffix[i++] = '/';
	}
	if (have_g) {
		suffix[i++] = 'g';
		suffix[i++] = '/';
	}
	if (i != 0) 
		suffix[i - 1] = '\0';

	snprintf(data->name, IFNAMSIZ, "IEEE 802.11%s", suffix);

	return 0;
}

static int bcm43xx_wx_set_channelfreq(struct net_device *net_dev,
				      struct iw_request_info *info,
				      union iwreq_data *data,
				      char *extra)
{
	struct bcm43xx_private *bcm = bcm43xx_priv(net_dev);
	unsigned long flags;
	u8 channel;
	s8 expon;
	int freq;
	int err = -EINVAL;

	mutex_lock(&bcm->mutex);
	spin_lock_irqsave(&bcm->irq_lock, flags);

	if ((data->freq.e == 0) &&
	    (data->freq.m >= 0) && (data->freq.m <= 1000)) {
		channel = data->freq.m;
		freq = bcm43xx_channel_to_freq(bcm, channel);
	} else {
		freq = data->freq.m;
		expon = 6 - data->freq.e;
		while (--expon >= 0)    /* scale down the frequency to MHz */
			freq /= 10;
		assert(freq > 1000);
		channel = bcm43xx_freq_to_channel(bcm, freq);
	}
	if (!ieee80211_is_valid_channel(bcm->ieee, channel))
		goto out_unlock;
	if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) {
		//ieee80211softmac_disassoc(softmac, $REASON);
		bcm43xx_mac_suspend(bcm);
		err = bcm43xx_radio_selectchannel(bcm, channel, 0);
		bcm43xx_mac_enable(bcm);
	} else {
		bcm43xx_current_radio(bcm)->initial_channel = channel;
		err = 0