htc_drv_main.c 47.5 KB
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/*
 * Copyright (c) 2010 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include "htc.h"

#ifdef CONFIG_ATH9K_HTC_DEBUGFS
static struct dentry *ath9k_debugfs_root;
#endif

/*************/
/* Utilities */
/*************/

static void ath_update_txpow(struct ath9k_htc_priv *priv)
{
	struct ath_hw *ah = priv->ah;
	u32 txpow;

	if (priv->curtxpow != priv->txpowlimit) {
		ath9k_hw_set_txpowerlimit(ah, priv->txpowlimit);
		/* read back in case value is clamped */
		ath9k_hw_getcapability(ah, ATH9K_CAP_TXPOW, 1, &txpow);
		priv->curtxpow = txpow;
	}
}

/* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
					      struct ath9k_channel *ichan)
{
	enum htc_phymode mode;

	mode = HTC_MODE_AUTO;

	switch (ichan->chanmode) {
	case CHANNEL_G:
	case CHANNEL_G_HT20:
	case CHANNEL_G_HT40PLUS:
	case CHANNEL_G_HT40MINUS:
		mode = HTC_MODE_11NG;
		break;
	case CHANNEL_A:
	case CHANNEL_A_HT20:
	case CHANNEL_A_HT40PLUS:
	case CHANNEL_A_HT40MINUS:
		mode = HTC_MODE_11NA;
		break;
	default:
		break;
	}

	return mode;
}

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static bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
			       enum ath9k_power_mode mode)
{
	bool ret;

	mutex_lock(&priv->htc_pm_lock);
	ret = ath9k_hw_setpower(priv->ah, mode);
	mutex_unlock(&priv->htc_pm_lock);

	return ret;
}

void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
{
	mutex_lock(&priv->htc_pm_lock);
	if (++priv->ps_usecount != 1)
		goto unlock;
	ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);

unlock:
	mutex_unlock(&priv->htc_pm_lock);
}

void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
{
	mutex_lock(&priv->htc_pm_lock);
	if (--priv->ps_usecount != 0)
		goto unlock;

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	if (priv->ps_idle)
		ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
	else if (priv->ps_enabled)
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		ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
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unlock:
	mutex_unlock(&priv->htc_pm_lock);
}

void ath9k_ps_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv =
		container_of(work, struct ath9k_htc_priv,
			     ps_work);
	ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);

	/* The chip wakes up after receiving the first beacon
	   while network sleep is enabled. For the driver to
	   be in sync with the hw, set the chip to awake and
	   only then set it to sleep.
	 */
	ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
}

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static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
				 struct ieee80211_hw *hw,
				 struct ath9k_channel *hchan)
{
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ieee80211_conf *conf = &common->hw->conf;
	bool fastcc = true;
	struct ieee80211_channel *channel = hw->conf.channel;
	enum htc_phymode mode;
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	__be16 htc_mode;
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	u8 cmd_rsp;
	int ret;

	if (priv->op_flags & OP_INVALID)
		return -EIO;

	if (priv->op_flags & OP_FULL_RESET)
		fastcc = false;

	/* Fiddle around with fastcc later on, for now just use full reset */
	fastcc = false;
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	ath9k_htc_ps_wakeup(priv);
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	htc_stop(priv->htc);
	WMI_CMD(WMI_DISABLE_INTR_CMDID);
	WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
	WMI_CMD(WMI_STOP_RECV_CMDID);

	ath_print(common, ATH_DBG_CONFIG,
		  "(%u MHz) -> (%u MHz), HT: %d, HT40: %d\n",
		  priv->ah->curchan->channel,
		  channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf));

	ret = ath9k_hw_reset(ah, hchan, fastcc);
	if (ret) {
		ath_print(common, ATH_DBG_FATAL,
			  "Unable to reset channel (%u Mhz) "
			  "reset status %d\n", channel->center_freq, ret);
		goto err;
	}

	ath_update_txpow(priv);

	WMI_CMD(WMI_START_RECV_CMDID);
	if (ret)
		goto err;

	ath9k_host_rx_init(priv);

	mode = ath9k_htc_get_curmode(priv, hchan);
	htc_mode = cpu_to_be16(mode);
	WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
	if (ret)
		goto err;

	WMI_CMD(WMI_ENABLE_INTR_CMDID);
	if (ret)
		goto err;

	htc_start(priv->htc);

	priv->op_flags &= ~OP_FULL_RESET;
err:
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	ath9k_htc_ps_restore(priv);
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	return ret;
}

static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_vif hvif;
	int ret = 0;
	u8 cmd_rsp;

	if (priv->nvifs > 0)
		return -ENOBUFS;

	memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
	memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);

	hvif.opmode = cpu_to_be32(HTC_M_MONITOR);
	priv->ah->opmode = NL80211_IFTYPE_MONITOR;
	hvif.index = priv->nvifs;

	WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
	if (ret)
		return ret;

	priv->nvifs++;
	return 0;
}

static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_vif hvif;
	int ret = 0;
	u8 cmd_rsp;

	memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
	memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
	hvif.index = 0; /* Should do for now */
	WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
	priv->nvifs--;

	return ret;
}

static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
				 struct ieee80211_vif *vif,
				 struct ieee80211_sta *sta)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_sta tsta;
	struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
	struct ath9k_htc_sta *ista;
	int ret;
	u8 cmd_rsp;

	if (priv->nstations >= ATH9K_HTC_MAX_STA)
		return -ENOBUFS;

	memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));

	if (sta) {
		ista = (struct ath9k_htc_sta *) sta->drv_priv;
		memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
		memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
		tsta.associd = common->curaid;
		tsta.is_vif_sta = 0;
		tsta.valid = true;
		ista->index = priv->nstations;
	} else {
		memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
		tsta.is_vif_sta = 1;
	}

	tsta.sta_index = priv->nstations;
	tsta.vif_index = avp->index;
	tsta.maxampdu = 0xffff;
	if (sta && sta->ht_cap.ht_supported)
		tsta.flags = cpu_to_be16(ATH_HTC_STA_HT);

	WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
	if (ret) {
		if (sta)
			ath_print(common, ATH_DBG_FATAL,
			  "Unable to add station entry for: %pM\n", sta->addr);
		return ret;
	}

	if (sta)
		ath_print(common, ATH_DBG_CONFIG,
			  "Added a station entry for: %pM (idx: %d)\n",
			  sta->addr, tsta.sta_index);

	priv->nstations++;
	return 0;
}

static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv,
				    struct ieee80211_vif *vif,
				    struct ieee80211_sta *sta)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_sta *ista;
	int ret;
	u8 cmd_rsp, sta_idx;

	if (sta) {
		ista = (struct ath9k_htc_sta *) sta->drv_priv;
		sta_idx = ista->index;
	} else {
		sta_idx = 0;
	}

	WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
	if (ret) {
		if (sta)
			ath_print(common, ATH_DBG_FATAL,
			  "Unable to remove station entry for: %pM\n",
			  sta->addr);
		return ret;
	}

	if (sta)
		ath_print(common, ATH_DBG_CONFIG,
			  "Removed a station entry for: %pM (idx: %d)\n",
			  sta->addr, sta_idx);

	priv->nstations--;
	return 0;
}

static int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv)
{
	struct ath9k_htc_cap_target tcap;
	int ret;
	u8 cmd_rsp;

	memset(&tcap, 0, sizeof(struct ath9k_htc_cap_target));

	/* FIXME: Values are hardcoded */
	tcap.flags = 0x240c40;
	tcap.flags_ext = 0x80601000;
	tcap.ampdu_limit = 0xffff0000;
	tcap.ampdu_subframes = 20;
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	tcap.tx_chainmask_legacy = priv->ah->caps.tx_chainmask;
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	tcap.protmode = 1;
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	tcap.tx_chainmask = priv->ah->caps.tx_chainmask;
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	WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap);

	return ret;
}

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static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
				 struct ieee80211_sta *sta,
				 struct ath9k_htc_target_rate *trate)
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{
	struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
	struct ieee80211_supported_band *sband;
	u32 caps = 0;
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	int i, j;
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	sband = priv->hw->wiphy->bands[priv->hw->conf.channel->band];
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	for (i = 0, j = 0; i < sband->n_bitrates; i++) {
		if (sta->supp_rates[sband->band] & BIT(i)) {
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			trate->rates.legacy_rates.rs_rates[j]
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				= (sband->bitrates[i].bitrate * 2) / 10;
			j++;
		}
	}
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	trate->rates.legacy_rates.rs_nrates = j;
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	if (sta->ht_cap.ht_supported) {
		for (i = 0, j = 0; i < 77; i++) {
			if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8)))
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				trate->rates.ht_rates.rs_rates[j++] = i;
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			if (j == ATH_HTC_RATE_MAX)
				break;
		}
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		trate->rates.ht_rates.rs_nrates = j;
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		caps = WLAN_RC_HT_FLAG;
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		if (priv->ah->caps.tx_chainmask != 1 &&
		    ath9k_hw_getcapability(priv->ah, ATH9K_CAP_DS, 0, NULL)) {
			if (sta->ht_cap.mcs.rx_mask[1])
				caps |= WLAN_RC_DS_FLAG;
		}
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		if (sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40)
			caps |= WLAN_RC_40_FLAG;
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		if (conf_is_ht40(&priv->hw->conf) &&
		    (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
			caps |= WLAN_RC_SGI_FLAG;
		else if (conf_is_ht20(&priv->hw->conf) &&
			 (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20))
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			caps |= WLAN_RC_SGI_FLAG;
	}

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	trate->sta_index = ista->index;
	trate->isnew = 1;
	trate->capflags = cpu_to_be32(caps);
}

static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv,
				    struct ath9k_htc_target_rate *trate)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	int ret;
	u8 cmd_rsp;
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	WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate);
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	if (ret) {
		ath_print(common, ATH_DBG_FATAL,
			  "Unable to initialize Rate information on target\n");
	}

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	return ret;
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}

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static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
				struct ieee80211_sta *sta)
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{
	struct ath_common *common = ath9k_hw_common(priv->ah);
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	struct ath9k_htc_target_rate trate;
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	int ret;

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	memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
	ath9k_htc_setup_rate(priv, sta, &trate);
	ret = ath9k_htc_send_rate_cmd(priv, &trate);
	if (!ret)
		ath_print(common, ATH_DBG_CONFIG,
			  "Updated target sta: %pM, rate caps: 0x%X\n",
			  sta->addr, be32_to_cpu(trate.capflags));
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}

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static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
				  struct ieee80211_vif *vif,
				  struct ieee80211_bss_conf *bss_conf)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_rate trate;
	struct ieee80211_sta *sta;
	int ret;

	memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));

	rcu_read_lock();
	sta = ieee80211_find_sta(vif, bss_conf->bssid);
	if (!sta) {
		rcu_read_unlock();
		return;
	}
	ath9k_htc_setup_rate(priv, sta, &trate);
	rcu_read_unlock();

	ret = ath9k_htc_send_rate_cmd(priv, &trate);
	if (!ret)
		ath_print(common, ATH_DBG_CONFIG,
			  "Updated target sta: %pM, rate caps: 0x%X\n",
			  bss_conf->bssid, be32_to_cpu(trate.capflags));
}

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static int ath9k_htc_aggr_oper(struct ath9k_htc_priv *priv,
			       struct ieee80211_vif *vif,
			       u8 *sta_addr, u8 tid, bool oper)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_aggr aggr;
	struct ieee80211_sta *sta = NULL;
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	struct ath9k_htc_sta *ista;
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	int ret = 0;
	u8 cmd_rsp;

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	if (tid >= ATH9K_HTC_MAX_TID)
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		return -EINVAL;

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	memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));

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	rcu_read_lock();
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	/* Check if we are able to retrieve the station */
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	sta = ieee80211_find_sta(vif, sta_addr);
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	if (!sta) {
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		rcu_read_unlock();
		return -EINVAL;
	}

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	ista = (struct ath9k_htc_sta *) sta->drv_priv;
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	if (oper)
		ista->tid_state[tid] = AGGR_START;
	else
		ista->tid_state[tid] = AGGR_STOP;
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	aggr.sta_index = ista->index;
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	rcu_read_unlock();
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	aggr.tidno = tid;
	aggr.aggr_enable = oper;

	WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
	if (ret)
		ath_print(common, ATH_DBG_CONFIG,
			  "Unable to %s TX aggregation for (%pM, %d)\n",
			  (oper) ? "start" : "stop", sta->addr, tid);
	else
		ath_print(common, ATH_DBG_CONFIG,
			  "%s aggregation for (%pM, %d)\n",
			  (oper) ? "Starting" : "Stopping", sta->addr, tid);

	return ret;
}

void ath9k_htc_aggr_work(struct work_struct *work)
{
	int ret = 0;
	struct ath9k_htc_priv *priv =
		container_of(work, struct ath9k_htc_priv,
			     ath9k_aggr_work.work);
	struct ath9k_htc_aggr_work *wk = &priv->aggr_work;

	mutex_lock(&wk->mutex);

	switch (wk->action) {
	case IEEE80211_AMPDU_TX_START:
		ret = ath9k_htc_aggr_oper(priv, wk->vif, wk->sta_addr,
					  wk->tid, true);
		if (!ret)
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			ieee80211_start_tx_ba_cb_irqsafe(wk->vif, wk->sta_addr,
							 wk->tid);
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		break;
	case IEEE80211_AMPDU_TX_STOP:
		ath9k_htc_aggr_oper(priv, wk->vif, wk->sta_addr,
				    wk->tid, false);
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		ieee80211_stop_tx_ba_cb_irqsafe(wk->vif, wk->sta_addr, wk->tid);
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		break;
	default:
		ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
			  "Unknown AMPDU action\n");
	}

	mutex_unlock(&wk->mutex);
}

/*********/
/* DEBUG */
/*********/

#ifdef CONFIG_ATH9K_HTC_DEBUGFS

static int ath9k_debugfs_open(struct inode *inode, struct file *file)
{
	file->private_data = inode->i_private;
	return 0;
}

static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
				   size_t count, loff_t *ppos)
{
	struct ath9k_htc_priv *priv =
		(struct ath9k_htc_priv *) file->private_data;
	struct ath9k_htc_target_stats cmd_rsp;
	char buf[512];
	unsigned int len = 0;
	int ret = 0;

	memset(&cmd_rsp, 0, sizeof(cmd_rsp));

	WMI_CMD(WMI_TGT_STATS_CMDID);
	if (ret)
		return -EINVAL;


	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Short Retries",
			be32_to_cpu(cmd_rsp.tx_shortretry));
	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Long Retries",
			be32_to_cpu(cmd_rsp.tx_longretry));
	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Xretries",
			be32_to_cpu(cmd_rsp.tx_xretries));
	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Unaggr. Xretries",
			be32_to_cpu(cmd_rsp.ht_txunaggr_xretry));
	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Xretries (HT)",
			be32_to_cpu(cmd_rsp.ht_tx_xretries));
	len += snprintf(buf + len, sizeof(buf) - len,
			"%19s : %10u\n", "TX Rate", priv->debug.txrate);

	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static const struct file_operations fops_tgt_stats = {
	.read = read_file_tgt_stats,
	.open = ath9k_debugfs_open,
	.owner = THIS_MODULE
};

static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
			      size_t count, loff_t *ppos)
{
	struct ath9k_htc_priv *priv =
		(struct ath9k_htc_priv *) file->private_data;
	char buf[512];
	unsigned int len = 0;

	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "Buffers queued",
			priv->debug.tx_stats.buf_queued);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "Buffers completed",
			priv->debug.tx_stats.buf_completed);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs queued",
			priv->debug.tx_stats.skb_queued);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs completed",
			priv->debug.tx_stats.skb_completed);
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	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs dropped",
			priv->debug.tx_stats.skb_dropped);
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	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "BE queued",
			priv->debug.tx_stats.queue_stats[WME_AC_BE]);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "BK queued",
			priv->debug.tx_stats.queue_stats[WME_AC_BK]);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "VI queued",
			priv->debug.tx_stats.queue_stats[WME_AC_VI]);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "VO queued",
			priv->debug.tx_stats.queue_stats[WME_AC_VO]);

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	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static const struct file_operations fops_xmit = {
	.read = read_file_xmit,
	.open = ath9k_debugfs_open,
	.owner = THIS_MODULE
};

static ssize_t read_file_recv(struct file *file, char __user *user_buf,
			      size_t count, loff_t *ppos)
{
	struct ath9k_htc_priv *priv =
		(struct ath9k_htc_priv *) file->private_data;
	char buf[512];
	unsigned int len = 0;

	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs allocated",
			priv->debug.rx_stats.skb_allocated);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs completed",
			priv->debug.rx_stats.skb_completed);
	len += snprintf(buf + len, sizeof(buf) - len,
			"%20s : %10u\n", "SKBs Dropped",
			priv->debug.rx_stats.skb_dropped);

	return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}

static const struct file_operations fops_recv = {
	.read = read_file_recv,
	.open = ath9k_debugfs_open,
	.owner = THIS_MODULE
};

658
int ath9k_htc_init_debug(struct ath_hw *ah)
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{
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	if (!ath9k_debugfs_root)
		return -ENOENT;

	priv->debug.debugfs_phy = debugfs_create_dir(wiphy_name(priv->hw->wiphy),
						     ath9k_debugfs_root);
	if (!priv->debug.debugfs_phy)
		goto err;

	priv->debug.debugfs_tgt_stats = debugfs_create_file("tgt_stats", S_IRUSR,
						    priv->debug.debugfs_phy,
						    priv, &fops_tgt_stats);
	if (!priv->debug.debugfs_tgt_stats)
		goto err;


	priv->debug.debugfs_xmit = debugfs_create_file("xmit", S_IRUSR,
						       priv->debug.debugfs_phy,
						       priv, &fops_xmit);
	if (!priv->debug.debugfs_xmit)
		goto err;

	priv->debug.debugfs_recv = debugfs_create_file("recv", S_IRUSR,
						       priv->debug.debugfs_phy,
						       priv, &fops_recv);
	if (!priv->debug.debugfs_recv)
		goto err;

	return 0;

err:
693
	ath9k_htc_exit_debug(ah);
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	return -ENOMEM;
}

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void ath9k_htc_exit_debug(struct ath_hw *ah)
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{
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	debugfs_remove(priv->debug.debugfs_recv);
	debugfs_remove(priv->debug.debugfs_xmit);
	debugfs_remove(priv->debug.debugfs_tgt_stats);
	debugfs_remove(priv->debug.debugfs_phy);
}

708
int ath9k_htc_debug_create_root(void)
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{
	ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
	if (!ath9k_debugfs_root)
		return -ENOENT;

	return 0;
}

717
void ath9k_htc_debug_remove_root(void)
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{
	debugfs_remove(ath9k_debugfs_root);
	ath9k_debugfs_root = NULL;
}

#endif /* CONFIG_ATH9K_HTC_DEBUGFS */

/*******/
/* ANI */
/*******/

static void ath_start_ani(struct ath9k_htc_priv *priv)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	unsigned long timestamp = jiffies_to_msecs(jiffies);

	common->ani.longcal_timer = timestamp;
	common->ani.shortcal_timer = timestamp;
	common->ani.checkani_timer = timestamp;

	ieee80211_queue_delayed_work(common->hw, &priv->ath9k_ani_work,
				     msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
}

void ath9k_ani_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv =
		container_of(work, struct ath9k_htc_priv,
			     ath9k_ani_work.work);
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	bool longcal = false;
	bool shortcal = false;
	bool aniflag = false;
	unsigned int timestamp = jiffies_to_msecs(jiffies);
	u32 cal_interval, short_cal_interval;

	short_cal_interval = ATH_STA_SHORT_CALINTERVAL;

757 758 759 760
	/* Only calibrate if awake */
	if (ah->power_mode != ATH9K_PM_AWAKE)
		goto set_timer;

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	/* Long calibration runs independently of short calibration. */
	if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
		longcal = true;
		ath_print(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
		common->ani.longcal_timer = timestamp;
	}

	/* Short calibration applies only while caldone is false */
	if (!common->ani.caldone) {
		if ((timestamp - common->ani.shortcal_timer) >=
		    short_cal_interval) {
			shortcal = true;
			ath_print(common, ATH_DBG_ANI,
				  "shortcal @%lu\n", jiffies);
			common->ani.shortcal_timer = timestamp;
			common->ani.resetcal_timer = timestamp;
		}
	} else {
		if ((timestamp - common->ani.resetcal_timer) >=
		    ATH_RESTART_CALINTERVAL) {
			common->ani.caldone = ath9k_hw_reset_calvalid(ah);
			if (common->ani.caldone)
				common->ani.resetcal_timer = timestamp;
		}
	}

	/* Verify whether we must check ANI */
	if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
		aniflag = true;
		common->ani.checkani_timer = timestamp;
	}

	/* Skip all processing if there's nothing to do. */
	if (longcal || shortcal || aniflag) {
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		ath9k_htc_ps_wakeup(priv);

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		/* Call ANI routine if necessary */
		if (aniflag)
			ath9k_hw_ani_monitor(ah, ah->curchan);

		/* Perform calibration if necessary */
		if (longcal || shortcal) {
			common->ani.caldone =
				ath9k_hw_calibrate(ah, ah->curchan,
						   common->rx_chainmask,
						   longcal);

			if (longcal)
				common->ani.noise_floor =
					ath9k_hw_getchan_noise(ah, ah->curchan);

			ath_print(common, ATH_DBG_ANI,
				  " calibrate chan %u/%x nf: %d\n",
				  ah->curchan->channel,
				  ah->curchan->channelFlags,
				  common->ani.noise_floor);
		}
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		ath9k_htc_ps_restore(priv);
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	}

823
set_timer:
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	/*
	* Set timer interval based on previous results.
	* The interval must be the shortest necessary to satisfy ANI,
	* short calibration and long calibration.
	*/
	cal_interval = ATH_LONG_CALINTERVAL;
	if (priv->ah->config.enable_ani)
		cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
	if (!common->ani.caldone)
		cal_interval = min(cal_interval, (u32)short_cal_interval);

	ieee80211_queue_delayed_work(common->hw, &priv->ath9k_ani_work,
				     msecs_to_jiffies(cal_interval));
}

/*******/
/* LED */
/*******/

static void ath9k_led_blink_work(struct work_struct *work)
{
	struct ath9k_htc_priv *priv = container_of(work, struct ath9k_htc_priv,
						   ath9k_led_blink_work.work);

	if (!(priv->op_flags & OP_LED_ASSOCIATED))
		return;

	if ((priv->led_on_duration == ATH_LED_ON_DURATION_IDLE) ||
	    (priv->led_off_duration == ATH_LED_OFF_DURATION_IDLE))
		ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
	else
		ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
				  (priv->op_flags & OP_LED_ON) ? 1 : 0);

	ieee80211_queue_delayed_work(priv->hw,
				     &priv->ath9k_led_blink_work,
				     (priv->op_flags & OP_LED_ON) ?
				     msecs_to_jiffies(priv->led_off_duration) :
				     msecs_to_jiffies(priv->led_on_duration));

	priv->led_on_duration = priv->led_on_cnt ?
		max((ATH_LED_ON_DURATION_IDLE - priv->led_on_cnt), 25) :
		ATH_LED_ON_DURATION_IDLE;
	priv->led_off_duration = priv->led_off_cnt ?
		max((ATH_LED_OFF_DURATION_IDLE - priv->led_off_cnt), 10) :
		ATH_LED_OFF_DURATION_IDLE;
	priv->led_on_cnt = priv->led_off_cnt = 0;

	if (priv->op_flags & OP_LED_ON)
		priv->op_flags &= ~OP_LED_ON;
	else
		priv->op_flags |= OP_LED_ON;
}

static void ath9k_led_brightness_work(struct work_struct *work)
{
	struct ath_led *led = container_of(work, struct ath_led,
					   brightness_work.work);
	struct ath9k_htc_priv *priv = led->priv;

	switch (led->brightness) {
	case LED_OFF:
		if (led->led_type == ATH_LED_ASSOC ||
		    led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin,
					  (led->led_type == ATH_LED_RADIO));
			priv->op_flags &= ~OP_LED_ASSOCIATED;
			if (led->led_type == ATH_LED_RADIO)
				priv->op_flags &= ~OP_LED_ON;
		} else {
			priv->led_off_cnt++;
		}
		break;
	case LED_FULL:
		if (led->led_type == ATH_LED_ASSOC) {
			priv->op_flags |= OP_LED_ASSOCIATED;
			ieee80211_queue_delayed_work(priv->hw,
					     &priv->ath9k_led_blink_work, 0);
		} else if (led->led_type == ATH_LED_RADIO) {
			ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 0);
			priv->op_flags |= OP_LED_ON;
		} else {
			priv->led_on_cnt++;
		}
		break;
	default:
		break;
	}
}

static void ath9k_led_brightness(struct led_classdev *led_cdev,
				 enum led_brightness brightness)
{
	struct ath_led *led = container_of(led_cdev, struct ath_led, led_cdev);
	struct ath9k_htc_priv *priv = led->priv;

	led->brightness = brightness;
	if (!(priv->op_flags & OP_LED_DEINIT))
		ieee80211_queue_delayed_work(priv->hw,
					     &led->brightness_work, 0);
}

static void ath9k_led_stop_brightness(struct ath9k_htc_priv *priv)
{
	cancel_delayed_work_sync(&priv->radio_led.brightness_work);
	cancel_delayed_work_sync(&priv->assoc_led.brightness_work);
	cancel_delayed_work_sync(&priv->tx_led.brightness_work);
	cancel_delayed_work_sync(&priv->rx_led.brightness_work);
}

static int ath9k_register_led(struct ath9k_htc_priv *priv, struct ath_led *led,
			      char *trigger)
{
	int ret;

	led->priv = priv;
	led->led_cdev.name = led->name;
	led->led_cdev.default_trigger = trigger;
	led->led_cdev.brightness_set = ath9k_led_brightness;

	ret = led_classdev_register(wiphy_dev(priv->hw->wiphy), &led->led_cdev);
	if (ret)
		ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
			  "Failed to register led:%s", led->name);
	else
		led->registered = 1;

	INIT_DELAYED_WORK(&led->brightness_work, ath9k_led_brightness_work);

	return ret;
}

static void ath9k_unregister_led(struct ath_led *led)
{
	if (led->registered) {
		led_classdev_unregister(&led->led_cdev);
		led->registered = 0;
	}
}

void ath9k_deinit_leds(struct ath9k_htc_priv *priv)
{
	priv->op_flags |= OP_LED_DEINIT;
	ath9k_unregister_led(&priv->assoc_led);
	priv->op_flags &= ~OP_LED_ASSOCIATED;
	ath9k_unregister_led(&priv->tx_led);
	ath9k_unregister_led(&priv->rx_led);
	ath9k_unregister_led(&priv->radio_led);
}

void ath9k_init_leds(struct ath9k_htc_priv *priv)
{
	char *trigger;
	int ret;

	if (AR_SREV_9287(priv->ah))
		priv->ah->led_pin = ATH_LED_PIN_9287;
	else if (AR_SREV_9271(priv->ah))
		priv->ah->led_pin = ATH_LED_PIN_9271;
	else
		priv->ah->led_pin = ATH_LED_PIN_DEF;

	/* Configure gpio 1 for output */
	ath9k_hw_cfg_output(priv->ah, priv->ah->led_pin,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	/* LED off, active low */
	ath9k_hw_set_gpio(priv->ah, priv->ah->led_pin, 1);

	INIT_DELAYED_WORK(&priv->ath9k_led_blink_work, ath9k_led_blink_work);

	trigger = ieee80211_get_radio_led_name(priv->hw);
	snprintf(priv->radio_led.name, sizeof(priv->radio_led.name),
		"ath9k-%s::radio", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->radio_led, trigger);
	priv->radio_led.led_type = ATH_LED_RADIO;
	if (ret)
		goto fail;

	trigger = ieee80211_get_assoc_led_name(priv->hw);
	snprintf(priv->assoc_led.name, sizeof(priv->assoc_led.name),
		"ath9k-%s::assoc", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->assoc_led, trigger);
	priv->assoc_led.led_type = ATH_LED_ASSOC;
	if (ret)
		goto fail;

	trigger = ieee80211_get_tx_led_name(priv->hw);
	snprintf(priv->tx_led.name, sizeof(priv->tx_led.name),
		"ath9k-%s::tx", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->tx_led, trigger);
	priv->tx_led.led_type = ATH_LED_TX;
	if (ret)
		goto fail;

	trigger = ieee80211_get_rx_led_name(priv->hw);
	snprintf(priv->rx_led.name, sizeof(priv->rx_led.name),
		"ath9k-%s::rx", wiphy_name(priv->hw->wiphy));
	ret = ath9k_register_led(priv, &priv->rx_led, trigger);
	priv->rx_led.led_type = ATH_LED_RX;
	if (ret)
		goto fail;

	priv->op_flags &= ~OP_LED_DEINIT;

	return;

fail:
	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
	ath9k_deinit_leds(priv);
}

/*******************/
/*	Rfkill	   */
/*******************/

static bool ath_is_rfkill_set(struct ath9k_htc_priv *priv)
{
	return ath9k_hw_gpio_get(priv->ah, priv->ah->rfkill_gpio) ==
		priv->ah->rfkill_polarity;
}

static void ath9k_htc_rfkill_poll_state(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	bool blocked = !!ath_is_rfkill_set(priv);

	wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
}

void ath9k_start_rfkill_poll(struct ath9k_htc_priv *priv)
{
	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
		wiphy_rfkill_start_polling(priv->hw->wiphy);
}

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static void ath9k_htc_radio_enable(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int ret;
	u8 cmd_rsp;

	if (!ah->curchan)
		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);

	/* Reset the HW */
	ret = ath9k_hw_reset(ah, ah->curchan, false);
	if (ret) {
		ath_print(common, ATH_DBG_FATAL,
			  "Unable to reset hardware; reset status %d "
			  "(freq %u MHz)\n", ret, ah->curchan->channel);
	}

	ath_update_txpow(priv);

	/* Start RX */
	WMI_CMD(WMI_START_RECV_CMDID);
	ath9k_host_rx_init(priv);

	/* Start TX */
	htc_start(priv->htc);
	spin_lock_bh(&priv->tx_lock);
	priv->tx_queues_stop = false;
	spin_unlock_bh(&priv->tx_lock);
	ieee80211_wake_queues(hw);

	WMI_CMD(WMI_ENABLE_INTR_CMDID);

	/* Enable LED */
	ath9k_hw_cfg_output(ah, ah->led_pin,
			    AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
	ath9k_hw_set_gpio(ah, ah->led_pin, 0);
}

static void ath9k_htc_radio_disable(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int ret;
	u8 cmd_rsp;

	ath9k_htc_ps_wakeup(priv);

	/* Disable LED */
	ath9k_hw_set_gpio(ah, ah->led_pin, 1);
	ath9k_hw_cfg_gpio_input(ah, ah->led_pin);

	WMI_CMD(WMI_DISABLE_INTR_CMDID);

	/* Stop TX */
	ieee80211_stop_queues(hw);
	htc_stop(priv->htc);
	WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
	skb_queue_purge(&priv->tx_queue);

	/* Stop RX */
	WMI_CMD(WMI_STOP_RECV_CMDID);

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	/*
	 * The MIB counters have to be disabled here,
	 * since the target doesn't do it.
	 */
	ath9k_hw_disable_mib_counters(ah);

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	if (!ah->curchan)
		ah->curchan = ath9k_cmn_get_curchannel(hw, ah);

	/* Reset the HW */
	ret = ath9k_hw_reset(ah, ah->curchan, false);
	if (ret) {
		ath_print(common, ATH_DBG_FATAL,
			  "Unable to reset hardware; reset status %d "
			  "(freq %u MHz)\n", ret, ah->curchan->channel);
	}

	/* Disable the PHY */
	ath9k_hw_phy_disable(ah);

	ath9k_htc_ps_restore(priv);
	ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
}

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/**********************/
/* mac80211 Callbacks */
/**********************/

static int ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct ieee80211_hdr *hdr;
	struct ath9k_htc_priv *priv = hw->priv;
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	int padpos, padsize, ret;
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	hdr = (struct ieee80211_hdr *) skb->data;

	/* Add the padding after the header if this is not already done */
	padpos = ath9k_cmn_padpos(hdr->frame_control);
	padsize = padpos & 3;
	if (padsize && skb->len > padpos) {
		if (skb_headroom(skb) < padsize)
			return -1;
		skb_push(skb, padsize);
		memmove(skb->data, skb->data + padsize, padpos);
	}

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	ret = ath9k_htc_tx_start(priv, skb);
	if (ret != 0) {
		if (ret == -ENOMEM) {
			ath_print(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
				  "Stopping TX queues\n");
			ieee80211_stop_queues(hw);
			spin_lock_bh(&priv->tx_lock);
			priv->tx_queues_stop = true;
			spin_unlock_bh(&priv->tx_lock);
		} else {
			ath_print(ath9k_hw_common(priv->ah), ATH_DBG_XMIT,
				  "Tx failed");
		}
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		goto fail_tx;
	}

	return 0;

fail_tx:
	dev_kfree_skb_any(skb);
	return 0;
}

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static int ath9k_htc_start(struct ieee80211_hw *hw)
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1194 1195 1196 1197 1198 1199 1200 1201
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ieee80211_channel *curchan = hw->conf.channel;
	struct ath9k_channel *init_channel;
	int ret = 0;
	enum htc_phymode mode;
S
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	__be16 htc_mode;
S
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1203 1204
	u8 cmd_rsp;

S
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1205 1206
	mutex_lock(&priv->mutex);

S
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	ath_print(common, ATH_DBG_CONFIG,
		  "Starting driver with initial channel: %d MHz\n",
		  curchan->center_freq);

S
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	/* Ensure that HW is awake before flushing RX */
	ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
	WMI_CMD(WMI_FLUSH_RECV_CMDID);

S
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1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226
	/* setup initial channel */
	init_channel = ath9k_cmn_get_curchannel(hw, ah);

	/* Reset SERDES registers */
	ath9k_hw_configpcipowersave(ah, 0, 0);

	ath9k_hw_htc_resetinit(ah);
	ret = ath9k_hw_reset(ah, init_channel, false);
	if (ret) {
		ath_print(common, ATH_DBG_FATAL,
			  "Unable to reset hardware; reset status %d "
			  "(freq %u MHz)\n", ret, curchan->center_freq);
S
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1227
		mutex_unlock(&priv->mutex);
1228
		return ret;
S
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1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
	}

	ath_update_txpow(priv);

	mode = ath9k_htc_get_curmode(priv, init_channel);
	htc_mode = cpu_to_be16(mode);
	WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
	WMI_CMD(WMI_ATH_INIT_CMDID);
	WMI_CMD(WMI_START_RECV_CMDID);

	ath9k_host_rx_init(priv);

	priv->op_flags &= ~OP_INVALID;
	htc_start(priv->htc);

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1244 1245 1246 1247 1248 1249
	spin_lock_bh(&priv->tx_lock);
	priv->tx_queues_stop = false;
	spin_unlock_bh(&priv->tx_lock);

	ieee80211_wake_queues(hw);

S
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1250
	mutex_unlock(&priv->mutex);
1251

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	return ret;
}

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static void ath9k_htc_stop(struct ieee80211_hw *hw)
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{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);
	int ret = 0;
	u8 cmd_rsp;

S
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	mutex_lock(&priv->mutex);

S
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1265 1266
	if (priv->op_flags & OP_INVALID) {
		ath_print(common, ATH_DBG_ANY, "Device not present\n");
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1267
		mutex_unlock(&priv->mutex);
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		return;
	}

1271 1272 1273 1274 1275 1276 1277
	/* Cancel all the running timers/work .. */
	cancel_work_sync(&priv->ps_work);
	cancel_delayed_work_sync(&priv->ath9k_ani_work);
	cancel_delayed_work_sync(&priv->ath9k_aggr_work);
	cancel_delayed_work_sync(&priv->ath9k_led_blink_work);
	ath9k_led_stop_brightness(priv);

1278
	ath9k_htc_ps_wakeup(priv);
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	htc_stop(priv->htc);
	WMI_CMD(WMI_DISABLE_INTR_CMDID);
	WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
	WMI_CMD(WMI_STOP_RECV_CMDID);
	skb_queue_purge(&priv->tx_queue);

	/* Remove monitor interface here */
	if (ah->opmode == NL80211_IFTYPE_MONITOR) {
		if (ath9k_htc_remove_monitor_interface(priv))
			ath_print(common, ATH_DBG_FATAL,
				  "Unable to remove monitor interface\n");
		else
			ath_print(common, ATH_DBG_CONFIG,
				  "Monitor interface removed\n");
	}

1295 1296 1297 1298 1299 1300
	ath9k_hw_phy_disable(ah);
	ath9k_hw_disable(ah);
	ath9k_hw_configpcipowersave(ah, 1, 1);
	ath9k_htc_ps_restore(priv);
	ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);

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	priv->op_flags |= OP_INVALID;

	ath_print(common, ATH_DBG_CONFIG, "Driver halt\n");
1304 1305 1306
	mutex_unlock(&priv->mutex);
}

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static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
				   struct ieee80211_vif *vif)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_target_vif hvif;
	int ret = 0;
	u8 cmd_rsp;

	mutex_lock(&priv->mutex);

	/* Only one interface for now */
	if (priv->nvifs > 0) {
		ret = -ENOBUFS;
		goto out;
	}

1325
	ath9k_htc_ps_wakeup(priv);
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	memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
	memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);

	switch (vif->type) {
	case NL80211_IFTYPE_STATION:
		hvif.opmode = cpu_to_be32(HTC_M_STA);
		break;
	case NL80211_IFTYPE_ADHOC:
		hvif.opmode = cpu_to_be32(HTC_M_IBSS);
		break;
	default:
		ath_print(common, ATH_DBG_FATAL,
			"Interface type %d not yet supported\n", vif->type);
		ret = -EOPNOTSUPP;
		goto out;
	}

	ath_print(common, ATH_DBG_CONFIG,
		  "Attach a VIF of type: %d\n", vif->type);

	priv->ah->opmode = vif->type;

	/* Index starts from zero on the target */
	avp->index = hvif.index = priv->nvifs;
	hvif.rtsthreshold = cpu_to_be16(2304);
	WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
	if (ret)
		goto out;

	priv->nvifs++;

	/*
	 * We need a node in target to tx mgmt frames
	 * before association.
	 */
	ret = ath9k_htc_add_station(priv, vif, NULL);
	if (ret)
		goto out;

	ret = ath9k_htc_update_cap_target(priv);
	if (ret)
		ath_print(common, ATH_DBG_CONFIG, "Failed to update"
			  " capability in target \n");

	priv->vif = vif;
out:
1372
	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
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	return ret;
}

static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
	struct ath9k_htc_target_vif hvif;
	int ret = 0;
	u8 cmd_rsp;

	ath_print(common, ATH_DBG_CONFIG, "Detach Interface\n");

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
	memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
	hvif.index = avp->index;
	WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
	priv->nvifs--;

	ath9k_htc_remove_station(priv, vif, NULL);
	priv->vif = NULL;

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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
}

static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ieee80211_conf *conf = &hw->conf;

	mutex_lock(&priv->mutex);

1414 1415 1416 1417
	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
		bool enable_radio = false;
		bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);

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		mutex_lock(&priv->htc_pm_lock);
1419 1420 1421
		if (!idle && priv->ps_idle)
			enable_radio = true;
		priv->ps_idle = idle;
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		mutex_unlock(&priv->htc_pm_lock);
1423 1424 1425 1426

		if (enable_radio) {
			ath_print(common, ATH_DBG_CONFIG,
				  "not-idle: enabling radio\n");
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			ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
			ath9k_htc_radio_enable(hw);
1429 1430 1431
		}
	}

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	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
		struct ieee80211_channel *curchan = hw->conf.channel;
		int pos = curchan->hw_value;

		ath_print(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
			  curchan->center_freq);

		ath9k_cmn_update_ichannel(hw, &priv->ah->channels[pos]);

		if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
			ath_print(common, ATH_DBG_FATAL,
				  "Unable to set channel\n");
			mutex_unlock(&priv->mutex);
			return -EINVAL;
		}

	}
1449 1450 1451 1452 1453 1454 1455 1456 1457 1458
	if (changed & IEEE80211_CONF_CHANGE_PS) {
		if (conf->flags & IEEE80211_CONF_PS) {
			ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
			priv->ps_enabled = true;
		} else {
			priv->ps_enabled = false;
			cancel_work_sync(&priv->ps_work);
			ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
		}
	}
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	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
		if (conf->flags & IEEE80211_CONF_MONITOR) {
			if (ath9k_htc_add_monitor_interface(priv))
				ath_print(common, ATH_DBG_FATAL,
					  "Failed to set monitor mode\n");
			else
				ath_print(common, ATH_DBG_CONFIG,
					  "HW opmode set to Monitor mode\n");
		}
	}

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	if (changed & IEEE80211_CONF_CHANGE_IDLE) {
		mutex_lock(&priv->htc_pm_lock);
		if (!priv->ps_idle) {
			mutex_unlock(&priv->htc_pm_lock);
			goto out;
		}
		mutex_unlock(&priv->htc_pm_lock);

1479 1480
		ath_print(common, ATH_DBG_CONFIG,
			  "idle: disabling radio\n");
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1481
		ath9k_htc_radio_disable(hw);
1482 1483
	}

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out:
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1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
	mutex_unlock(&priv->mutex);
	return 0;
}

#define SUPPORTED_FILTERS			\
	(FIF_PROMISC_IN_BSS |			\
	FIF_ALLMULTI |				\
	FIF_CONTROL |				\
	FIF_PSPOLL |				\
	FIF_OTHER_BSS |				\
	FIF_BCN_PRBRESP_PROMISC |		\
	FIF_FCSFAIL)

static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
				       unsigned int changed_flags,
				       unsigned int *total_flags,
				       u64 multicast)
{
	struct ath9k_htc_priv *priv = hw->priv;
	u32 rfilt;

	mutex_lock(&priv->mutex);
1507
	ath9k_htc_ps_wakeup(priv);
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1508

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1509 1510 1511 1512
	changed_flags &= SUPPORTED_FILTERS;
	*total_flags &= SUPPORTED_FILTERS;

	priv->rxfilter = *total_flags;
1513
	rfilt = ath9k_htc_calcrxfilter(priv);
S
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1514 1515 1516 1517 1518
	ath9k_hw_setrxfilter(priv->ah, rfilt);

	ath_print(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
		  "Set HW RX filter: 0x%x\n", rfilt);

1519
	ath9k_htc_ps_restore(priv);
S
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1520 1521 1522
	mutex_unlock(&priv->mutex);
}

1523 1524 1525
static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
			     struct ieee80211_vif *vif,
			     struct ieee80211_sta *sta)
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{
	struct ath9k_htc_priv *priv = hw->priv;
	int ret;

1530
	mutex_lock(&priv->mutex);
S
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1531
	ath9k_htc_ps_wakeup(priv);
1532 1533 1534 1535 1536
	ret = ath9k_htc_add_station(priv, vif, sta);
	if (!ret)
		ath9k_htc_init_rate(priv, sta);
	ath9k_htc_ps_restore(priv);
	mutex_unlock(&priv->mutex);
1537

1538 1539 1540 1541 1542 1543 1544 1545 1546
	return ret;
}

static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
				struct ieee80211_vif *vif,
				struct ieee80211_sta *sta)
{
	struct ath9k_htc_priv *priv = hw->priv;
	int ret;
1547

1548 1549 1550
	mutex_lock(&priv->mutex);
	ath9k_htc_ps_wakeup(priv);
	ret = ath9k_htc_remove_station(priv, vif, sta);
S
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1551
	ath9k_htc_ps_restore(priv);
1552
	mutex_unlock(&priv->mutex);
1553 1554

	return ret;
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}

static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, u16 queue,
			     const struct ieee80211_tx_queue_params *params)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct ath9k_tx_queue_info qi;
	int ret = 0, qnum;

	if (queue >= WME_NUM_AC)
		return 0;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585

	memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));

	qi.tqi_aifs = params->aifs;
	qi.tqi_cwmin = params->cw_min;
	qi.tqi_cwmax = params->cw_max;
	qi.tqi_burstTime = params->txop;

	qnum = get_hw_qnum(queue, priv->hwq_map);

	ath_print(common, ATH_DBG_CONFIG,
		  "Configure tx [queue/hwq] [%d/%d],  "
		  "aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
		  queue, qnum, params->aifs, params->cw_min,
		  params->cw_max, params->txop);

1586
	ret = ath_htc_txq_update(priv, qnum, &qi);
S
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1587
	if (ret) {
S
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1588
		ath_print(common, ATH_DBG_FATAL, "TXQ Update failed\n");
S
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1589 1590
		goto out;
	}
S
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1591

S
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1592
	if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1593
	    (qnum == priv->hwq_map[WME_AC_BE]))
S
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1594 1595
		    ath9k_htc_beaconq_config(priv);
out:
S
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1596
	ath9k_htc_ps_restore(priv);
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1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611
	mutex_unlock(&priv->mutex);

	return ret;
}

static int ath9k_htc_set_key(struct ieee80211_hw *hw,
			     enum set_key_cmd cmd,
			     struct ieee80211_vif *vif,
			     struct ieee80211_sta *sta,
			     struct ieee80211_key_conf *key)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	int ret = 0;

1612
	if (htc_modparam_nohwcrypt)
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1613 1614 1615 1616
		return -ENOSPC;

	mutex_lock(&priv->mutex);
	ath_print(common, ATH_DBG_CONFIG, "Set HW Key\n");
1617
	ath9k_htc_ps_wakeup(priv);
S
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1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639

	switch (cmd) {
	case SET_KEY:
		ret = ath9k_cmn_key_config(common, vif, sta, key);
		if (ret >= 0) {
			key->hw_key_idx = ret;
			/* push IV and Michael MIC generation to stack */
			key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
			if (key->alg == ALG_TKIP)
				key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
			if (priv->ah->sw_mgmt_crypto && key->alg == ALG_CCMP)
				key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
			ret = 0;
		}
		break;
	case DISABLE_KEY:
		ath9k_cmn_key_delete(common, key);
		break;
	default:
		ret = -EINVAL;
	}

1640
	ath9k_htc_ps_restore(priv);
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1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655
	mutex_unlock(&priv->mutex);

	return ret;
}

static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
				       struct ieee80211_vif *vif,
				       struct ieee80211_bss_conf *bss_conf,
				       u32 changed)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(ah);

	mutex_lock(&priv->mutex);
1656
	ath9k_htc_ps_wakeup(priv);
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	if (changed & BSS_CHANGED_ASSOC) {
		common->curaid = bss_conf->assoc ?
				 bss_conf->aid : 0;
		ath_print(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
			bss_conf->assoc);

		if (bss_conf->assoc) {
			priv->op_flags |= OP_ASSOCIATED;
			ath_start_ani(priv);
		} else {
			priv->op_flags &= ~OP_ASSOCIATED;
			cancel_delayed_work_sync(&priv->ath9k_ani_work);
		}
	}

	if (changed & BSS_CHANGED_BSSID) {
		/* Set BSSID */
		memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
		ath9k_hw_write_associd(ah);

		ath_print(common, ATH_DBG_CONFIG,
			  "BSSID: %pM aid: 0x%x\n",
			  common->curbssid, common->curaid);
	}

	if ((changed & BSS_CHANGED_BEACON_INT) ||
	    (changed & BSS_CHANGED_BEACON) ||
	    ((changed & BSS_CHANGED_BEACON_ENABLED) &&
	    bss_conf->enable_beacon)) {
		priv->op_flags |= OP_ENABLE_BEACON;
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		ath9k_htc_beacon_config(priv, vif);
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	}

	if ((changed & BSS_CHANGED_BEACON_ENABLED) &&
	    !bss_conf->enable_beacon) {
		priv->op_flags &= ~OP_ENABLE_BEACON;
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		ath9k_htc_beacon_config(priv, vif);
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	}

	if (changed & BSS_CHANGED_ERP_PREAMBLE) {
		ath_print(common, ATH_DBG_CONFIG, "BSS Changed PREAMBLE %d\n",
			  bss_conf->use_short_preamble);
		if (bss_conf->use_short_preamble)
			priv->op_flags |= OP_PREAMBLE_SHORT;
		else
			priv->op_flags &= ~OP_PREAMBLE_SHORT;
	}

	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
		ath_print(common, ATH_DBG_CONFIG, "BSS Changed CTS PROT %d\n",
			  bss_conf->use_cts_prot);
		if (bss_conf->use_cts_prot &&
		    hw->conf.channel->band != IEEE80211_BAND_5GHZ)
			priv->op_flags |= OP_PROTECT_ENABLE;
		else
			priv->op_flags &= ~OP_PROTECT_ENABLE;
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
		if (bss_conf->use_short_slot)
			ah->slottime = 9;
		else
			ah->slottime = 20;

		ath9k_hw_init_global_settings(ah);
	}

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	if (changed & BSS_CHANGED_HT)
		ath9k_htc_update_rate(priv, vif, bss_conf);

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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
}

static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;
	u64 tsf;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	tsf = ath9k_hw_gettsf64(priv->ah);
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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);

	return tsf;
}

static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, u64 tsf)
{
	struct ath9k_htc_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	ath9k_hw_settsf64(priv->ah, tsf);
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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
}

static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	ath9k_hw_reset_tsf(priv->ah);
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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
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}

static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
				  struct ieee80211_vif *vif,
				  enum ieee80211_ampdu_mlme_action action,
				  struct ieee80211_sta *sta,
				  u16 tid, u16 *ssn)
{
	struct ath9k_htc_priv *priv = hw->priv;
	struct ath9k_htc_aggr_work *work = &priv->aggr_work;
	struct ath9k_htc_sta *ista;

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
		break;
	case IEEE80211_AMPDU_RX_STOP:
		break;
	case IEEE80211_AMPDU_TX_START:
	case IEEE80211_AMPDU_TX_STOP:
		if (!(priv->op_flags & OP_TXAGGR))
			return -ENOTSUPP;
		memcpy(work->sta_addr, sta->addr, ETH_ALEN);
		work->hw = hw;
		work->vif = vif;
		work->action = action;
		work->tid = tid;
		ieee80211_queue_delayed_work(hw, &priv->ath9k_aggr_work, 0);
		break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
		ista = (struct ath9k_htc_sta *) sta->drv_priv;
		ista->tid_state[tid] = AGGR_OPERATIONAL;
		break;
	default:
		ath_print(ath9k_hw_common(priv->ah), ATH_DBG_FATAL,
			  "Unknown AMPDU action\n");
	}

	return 0;
}

static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
	spin_lock_bh(&priv->beacon_lock);
	priv->op_flags |= OP_SCANNING;
	spin_unlock_bh(&priv->beacon_lock);
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	cancel_work_sync(&priv->ps_work);
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	cancel_delayed_work_sync(&priv->ath9k_ani_work);
	mutex_unlock(&priv->mutex);
}

static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
{
	struct ath9k_htc_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	spin_lock_bh(&priv->beacon_lock);
	priv->op_flags &= ~OP_SCANNING;
	spin_unlock_bh(&priv->beacon_lock);
	priv->op_flags |= OP_FULL_RESET;
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	if (priv->op_flags & OP_ASSOCIATED)
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		ath9k_htc_beacon_config(priv, priv->vif);
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	ath_start_ani(priv);
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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
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}

static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
	return 0;
}

static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
					 u8 coverage_class)
{
	struct ath9k_htc_priv *priv = hw->priv;

	mutex_lock(&priv->mutex);
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	ath9k_htc_ps_wakeup(priv);
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	priv->ah->coverage_class = coverage_class;
	ath9k_hw_init_global_settings(priv->ah);
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	ath9k_htc_ps_restore(priv);
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	mutex_unlock(&priv->mutex);
}

struct ieee80211_ops ath9k_htc_ops = {
	.tx                 = ath9k_htc_tx,
	.start              = ath9k_htc_start,
	.stop               = ath9k_htc_stop,
	.add_interface      = ath9k_htc_add_interface,
	.remove_interface   = ath9k_htc_remove_interface,
	.config             = ath9k_htc_config,
	.configure_filter   = ath9k_htc_configure_filter,
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	.sta_add            = ath9k_htc_sta_add,
	.sta_remove         = ath9k_htc_sta_remove,
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	.conf_tx            = ath9k_htc_conf_tx,
	.bss_info_changed   = ath9k_htc_bss_info_changed,
	.set_key            = ath9k_htc_set_key,
	.get_tsf            = ath9k_htc_get_tsf,
	.set_tsf            = ath9k_htc_set_tsf,
	.reset_tsf          = ath9k_htc_reset_tsf,
	.ampdu_action       = ath9k_htc_ampdu_action,
	.sw_scan_start      = ath9k_htc_sw_scan_start,
	.sw_scan_complete   = ath9k_htc_sw_scan_complete,
	.set_rts_threshold  = ath9k_htc_set_rts_threshold,
	.rfkill_poll        = ath9k_htc_rfkill_poll_state,
	.set_coverage_class = ath9k_htc_set_coverage_class,
};