/* cfg80211 support
 *
 * See copyright notice in main.c
 */
#include <linux/ieee80211.h>
#include <net/cfg80211.h>
#include "hw.h"
#include "main.h"
#include "orinoco.h"

#include "cfg.h"

/* Supported bitrates. Must agree with hw.c */
static struct ieee80211_rate orinoco_rates[] = {
	{ .bitrate = 10 },
	{ .bitrate = 20 },
	{ .bitrate = 55 },
	{ .bitrate = 110 },
};

static const void * const orinoco_wiphy_privid = &orinoco_wiphy_privid;

/* Called after orinoco_private is allocated. */
void orinoco_wiphy_init(struct wiphy *wiphy)
{
	struct orinoco_private *priv = wiphy_priv(wiphy);

	wiphy->privid = orinoco_wiphy_privid;

	set_wiphy_dev(wiphy, priv->dev);
}

/* Called after firmware is initialised */
int orinoco_wiphy_register(struct wiphy *wiphy)
{
	struct orinoco_private *priv = wiphy_priv(wiphy);
	int i, channels = 0;

	if (priv->firmware_type == FIRMWARE_TYPE_AGERE)
		wiphy->max_scan_ssids = 1;
	else
		wiphy->max_scan_ssids = 0;

	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);

	/* TODO: should we set if we only have demo ad-hoc?
	 *       (priv->has_port3)
	 */
	if (priv->has_ibss)
		wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);

	if (!priv->broken_monitor || force_monitor)
		wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);

	priv->band.bitrates = orinoco_rates;
	priv->band.n_bitrates = ARRAY_SIZE(orinoco_rates);

	/* Only support channels allowed by the card EEPROM */
	for (i = 0; i < NUM_CHANNELS; i++) {
		if (priv->channel_mask & (1 << i)) {
			priv->channels[i].center_freq =
				ieee80211_dsss_chan_to_freq(i+1);
			channels++;
		}
	}
	priv->band.channels = priv->channels;
	priv->band.n_channels = channels;

	wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
	wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;

	i = 0;
	if (priv->has_wep) {
		priv->cipher_suites[i] = WLAN_CIPHER_SUITE_WEP40;
		i++;

		if (priv->has_big_wep) {
			priv->cipher_suites[i] = WLAN_CIPHER_SUITE_WEP104;
			i++;
		}
	}
	if (priv->has_wpa) {
		priv->cipher_suites[i] = WLAN_CIPHER_SUITE_TKIP;
		i++;
	}
	wiphy->cipher_suites = priv->cipher_suites;
	wiphy->n_cipher_suites = i;

	wiphy->rts_threshold = priv->rts_thresh;
	if (!priv->has_mwo)
		wiphy->frag_threshold = priv->frag_thresh;

	return wiphy_register(wiphy);
}

static int orinoco_change_vif(struct wiphy *wiphy, struct net_device *dev,
			      enum nl80211_iftype type, u32 *flags,
			      struct vif_params *params)
{
	struct orinoco_private *priv = wiphy_priv(wiphy);
	int err = 0;
	unsigned long lock;

	if (orinoco_lock(priv, &lock) != 0)
		return -EBUSY;

	switch (type) {
	case NL80211_IFTYPE_ADHOC:
		if (!priv->has_ibss && !priv->has_port3)
			err = -EINVAL;
		break;

	case NL80211_IFTYPE_STATION:
		break;

	case NL80211_IFTYPE_MONITOR:
		if (priv->broken_monitor && !force_monitor) {
			printk(KERN_WARNING "%s: Monitor mode support is "
			       "buggy in this firmware, not enabling\n",
			       wiphy_name(wiphy));
			err = -EINVAL;
		}
		break;

	default:
		err = -EINVAL;
	}

	if (!err) {
		priv->iw_mode = type;
		set_port_type(priv);
		err = orinoco_commit(priv);
	}

	orinoco_unlock(priv, &lock);

	return err;
}

static int orinoco_scan(struct wiphy *wiphy, struct net_device *dev,
			struct cfg80211_scan_request *request)
{
	struct orinoco_private *priv = wiphy_priv(wiphy);
	int err;

	if (!request)
		return -EINVAL;

	if (priv->scan_request && priv->scan_request != request)
		return -EBUSY;

	priv->scan_request = request;

	err = orinoco_hw_trigger_scan(priv, request->ssids);

	return err;
}

static int orinoco_set_channel(struct wiphy *wiphy,
			struct ieee80211_channel *chan,
			enum nl80211_channel_type channel_type)
{
	struct orinoco_private *priv = wiphy_priv(wiphy);
	int err = 0;
	unsigned long flags;
	int channel;

	if (!chan)
		return -EINVAL;

	if (channel_type != NL80211_CHAN_NO_HT)
		return -EINVAL;

	if (chan->band != IEEE80211_BAND_2GHZ)
		return -EINVAL;

	channel = ieee80211_freq_to_dsss_chan(chan->center_freq);

	if ((channel < 1) || (channel > NUM_CHANNELS) ||
	     !(priv->channel_mask & (1 << (channel-1))))
		return -EINVAL;

	if (orinoco_lock(priv, &flags) != 0)
		return -EBUSY;

	priv->channel = channel;
	if (priv->iw_mode == NL80211_IFTYPE_MONITOR) {
		/* Fast channel change - no commit if successful */
		hermes_t *hw = &priv->hw;
		err = hermes_docmd_wait(hw, HERMES_CMD_TEST |
					    HERMES_TEST_SET_CHANNEL,
					channel, NULL);
	}
	orinoco_unlock(priv, &flags);

	return err;
}

const struct cfg80211_ops orinoco_cfg_ops = {
	.change_virtual_intf = orinoco_change_vif,
	.set_channel = orinoco_set_channel,
	.scan = orinoco_scan,
};