drivers/net/wireless/mediatek/mt76/mt7615/main.c - hafnium/third_party/linux - Git at Google

 // SPDX-License-Identifier: ISC
 /* Copyright (C) 2019 MediaTek Inc.
  *
  * Author: Roy Luo <royluo@google.com>
  *         Ryder Lee <ryder.lee@mediatek.com>
  *         Felix Fietkau <nbd@nbd.name>
  */

 #include <linux/etherdevice.h>
 #include <linux/platform_device.h>
 #include <linux/pci.h>
 #include <linux/module.h>
 #include "mt7615.h"

 static int mt7615_start(struct ieee80211_hw *hw)
 {
 	struct mt7615_dev *dev = hw->priv;

 	dev->mt76.survey_time = ktime_get_boottime();
 	set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
 				     MT7615_WATCHDOG_TIME);

 	return 0;
 }

 static void mt7615_stop(struct ieee80211_hw *hw)
 {
 	struct mt7615_dev *dev = hw->priv;

 	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
 	cancel_delayed_work_sync(&dev->mt76.mac_work);
 }

 static int get_omac_idx(enum nl80211_iftype type, u32 mask)
 {
 	int i;

 	switch (type) {
 	case NL80211_IFTYPE_AP:
 	case NL80211_IFTYPE_MESH_POINT:
 		/* ap use hw bssid 0 and ext bssid */
 		if (~mask & BIT(HW_BSSID_0))
 			return HW_BSSID_0;

 		for (i = EXT_BSSID_1; i < EXT_BSSID_END; i++)
 			if (~mask & BIT(i))
 				return i;

 		break;
 	case NL80211_IFTYPE_STATION:
 		/* sta use hw bssid other than 0 */
 		for (i = HW_BSSID_1; i < HW_BSSID_MAX; i++)
 			if (~mask & BIT(i))
 				return i;

 		break;
 	default:
 		WARN_ON(1);
 		break;
 	};

 	return -1;
 }

 static int mt7615_add_interface(struct ieee80211_hw *hw,
 				struct ieee80211_vif *vif)
 {
 	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
 	struct mt7615_dev *dev = hw->priv;
 	struct mt76_txq *mtxq;
 	int idx, ret = 0;

 	mutex_lock(&dev->mt76.mutex);

 	mvif->idx = ffs(~dev->vif_mask) - 1;
 	if (mvif->idx >= MT7615_MAX_INTERFACES) {
 		ret = -ENOSPC;
 		goto out;
 	}

 	idx = get_omac_idx(vif->type, dev->omac_mask);
 	if (idx < 0) {
 		ret = -ENOSPC;
 		goto out;
 	}
 	mvif->omac_idx = idx;

 	/* TODO: DBDC support. Use band 0 for now */
 	mvif->band_idx = 0;
 	mvif->wmm_idx = mvif->idx % MT7615_MAX_WMM_SETS;

 	ret = mt7615_mcu_set_dev_info(dev, vif, 1);
 	if (ret)
 		goto out;

 	dev->vif_mask |= BIT(mvif->idx);
 	dev->omac_mask |= BIT(mvif->omac_idx);
 	idx = MT7615_WTBL_RESERVED - mvif->idx;
 	mvif->sta.wcid.idx = idx;
 	mvif->sta.wcid.hw_key_idx = -1;

 	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
 	mtxq = (struct mt76_txq *)vif->txq->drv_priv;
 	mtxq->wcid = &mvif->sta.wcid;
 	mt76_txq_init(&dev->mt76, vif->txq);

 out:
 	mutex_unlock(&dev->mt76.mutex);

 	return ret;
 }

 static void mt7615_remove_interface(struct ieee80211_hw *hw,
 				    struct ieee80211_vif *vif)
 {
 	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
 	struct mt7615_dev *dev = hw->priv;
 	int idx = mvif->sta.wcid.idx;

 	/* TODO: disable beacon for the bss */

 	mt7615_mcu_set_dev_info(dev, vif, 0);

 	rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
 	mt76_txq_remove(&dev->mt76, vif->txq);

 	mutex_lock(&dev->mt76.mutex);
 	dev->vif_mask &= ~BIT(mvif->idx);
 	dev->omac_mask &= ~BIT(mvif->omac_idx);
 	mutex_unlock(&dev->mt76.mutex);
 }

 static int mt7615_set_channel(struct mt7615_dev *dev)
 {
 	int ret;

 	cancel_delayed_work_sync(&dev->mt76.mac_work);

 	mutex_lock(&dev->mt76.mutex);
 	set_bit(MT76_RESET, &dev->mt76.state);

 	mt7615_dfs_check_channel(dev);

 	mt76_set_channel(&dev->mt76);

 	ret = mt7615_mcu_set_channel(dev);
 	if (ret)
 		goto out;

 	ret = mt7615_dfs_init_radar_detector(dev);
 	mt7615_mac_cca_stats_reset(dev);
 	dev->mt76.survey_time = ktime_get_boottime();
 	/* TODO: add DBDC support */
 	mt76_rr(dev, MT_MIB_SDR16(0));

 out:
 	clear_bit(MT76_RESET, &dev->mt76.state);
 	mutex_unlock(&dev->mt76.mutex);

 	mt76_txq_schedule_all(&dev->mt76);
 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
 				     MT7615_WATCHDOG_TIME);
 	return ret;
 }

 static int mt7615_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 mt7615_dev *dev = hw->priv;
 	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
 	struct mt7615_sta *msta = sta ? (struct mt7615_sta *)sta->drv_priv :
 				  &mvif->sta;
 	struct mt76_wcid *wcid = &msta->wcid;
 	int idx = key->keyidx;

 	/* The hardware does not support per-STA RX GTK, fallback
 	 * to software mode for these.
 	 */
 	if ((vif->type == NL80211_IFTYPE_ADHOC ||
 	     vif->type == NL80211_IFTYPE_MESH_POINT) &&
 	    (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
 	     key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
 	    !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 		return -EOPNOTSUPP;

 	/* fall back to sw encryption for unsupported ciphers */
 	switch (key->cipher) {
 	case WLAN_CIPHER_SUITE_AES_CMAC:
 		key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIE;
 		break;
 	case WLAN_CIPHER_SUITE_WEP40:
 	case WLAN_CIPHER_SUITE_WEP104:
 	case WLAN_CIPHER_SUITE_TKIP:
 	case WLAN_CIPHER_SUITE_CCMP:
 	case WLAN_CIPHER_SUITE_CCMP_256:
 	case WLAN_CIPHER_SUITE_GCMP:
 	case WLAN_CIPHER_SUITE_GCMP_256:
 	case WLAN_CIPHER_SUITE_SMS4:
 		break;
 	default:
 		return -EOPNOTSUPP;
 	}

 	if (cmd == SET_KEY) {
 		key->hw_key_idx = wcid->idx;
 		wcid->hw_key_idx = idx;
 	} else if (idx == wcid->hw_key_idx) {
 		wcid->hw_key_idx = -1;
 	}
 	mt76_wcid_key_setup(&dev->mt76, wcid,
 			    cmd == SET_KEY ? key : NULL);

 	return mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
 }

 static int mt7615_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mt7615_dev *dev = hw->priv;
 	int ret = 0;

 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 		ieee80211_stop_queues(hw);
 		ret = mt7615_set_channel(dev);
 		ieee80211_wake_queues(hw);
 	}

 	mutex_lock(&dev->mt76.mutex);

 	if (changed & IEEE80211_CONF_CHANGE_POWER)
 		ret = mt7615_mcu_set_tx_power(dev);

 	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 		if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
 			dev->mt76.rxfilter |= MT_WF_RFCR_DROP_OTHER_UC;
 		else
 			dev->mt76.rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;

 		mt76_wr(dev, MT_WF_RFCR, dev->mt76.rxfilter);
 	}

 	mutex_unlock(&dev->mt76.mutex);

 	return ret;
 }

 static int
 mt7615_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, u16 queue,
 	       const struct ieee80211_tx_queue_params *params)
 {
 	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
 	struct mt7615_dev *dev = hw->priv;

 	queue += mvif->wmm_idx * MT7615_MAX_WMM_SETS;

 	return mt7615_mcu_set_wmm(dev, queue, params);
 }

 static void mt7615_configure_filter(struct ieee80211_hw *hw,
 				    unsigned int changed_flags,
 				    unsigned int *total_flags,
 				    u64 multicast)
 {
 	struct mt7615_dev *dev = hw->priv;
 	u32 flags = 0;

 #define MT76_FILTER(_flag, _hw) do { \
 		flags |= *total_flags & FIF_##_flag;			\
 		dev->mt76.rxfilter &= ~(_hw);				\
 		dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw);	\
 	} while (0)

 	dev->mt76.rxfilter &= ~(MT_WF_RFCR_DROP_OTHER_BSS |
 				MT_WF_RFCR_DROP_OTHER_BEACON |
 				MT_WF_RFCR_DROP_FRAME_REPORT |
 				MT_WF_RFCR_DROP_PROBEREQ |
 				MT_WF_RFCR_DROP_MCAST_FILTERED |
 				MT_WF_RFCR_DROP_MCAST |
 				MT_WF_RFCR_DROP_BCAST |
 				MT_WF_RFCR_DROP_DUPLICATE |
 				MT_WF_RFCR_DROP_A2_BSSID |
 				MT_WF_RFCR_DROP_UNWANTED_CTL |
 				MT_WF_RFCR_DROP_STBC_MULTI);

 	MT76_FILTER(OTHER_BSS, MT_WF_RFCR_DROP_OTHER_TIM |
 			       MT_WF_RFCR_DROP_A3_MAC |
 			       MT_WF_RFCR_DROP_A3_BSSID);

 	MT76_FILTER(FCSFAIL, MT_WF_RFCR_DROP_FCSFAIL);

 	MT76_FILTER(CONTROL, MT_WF_RFCR_DROP_CTS |
 			     MT_WF_RFCR_DROP_RTS |
 			     MT_WF_RFCR_DROP_CTL_RSV |
 			     MT_WF_RFCR_DROP_NDPA);

 	*total_flags = flags;
 	mt76_wr(dev, MT_WF_RFCR, dev->mt76.rxfilter);
 }

 static void mt7615_bss_info_changed(struct ieee80211_hw *hw,
 				    struct ieee80211_vif *vif,
 				    struct ieee80211_bss_conf *info,
 				    u32 changed)
 {
 	struct mt7615_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);

 	if (changed & BSS_CHANGED_ASSOC)
 		mt7615_mcu_set_bss_info(dev, vif, info->assoc);

 	/* TODO: update beacon content
 	 * BSS_CHANGED_BEACON
 	 */

 	if (changed & BSS_CHANGED_BEACON_ENABLED) {
 		mt7615_mcu_set_bss_info(dev, vif, info->enable_beacon);
 		mt7615_mcu_wtbl_bmc(dev, vif, info->enable_beacon);
 		mt7615_mcu_set_sta_rec_bmc(dev, vif, info->enable_beacon);
 		mt7615_mcu_set_bcn(dev, vif, info->enable_beacon);
 	}

 	mutex_unlock(&dev->mt76.mutex);
 }

 static void
 mt7615_channel_switch_beacon(struct ieee80211_hw *hw,
 			     struct ieee80211_vif *vif,
 			     struct cfg80211_chan_def *chandef)
 {
 	struct mt7615_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);
 	mt7615_mcu_set_bcn(dev, vif, true);
 	mutex_unlock(&dev->mt76.mutex);
 }

 int mt7615_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 		   struct ieee80211_sta *sta)
 {
 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
 	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
 	struct mt7615_vif *mvif = (struct mt7615_vif *)vif->drv_priv;
 	int idx;

 	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1);
 	if (idx < 0)
 		return -ENOSPC;

 	msta->vif = mvif;
 	msta->wcid.sta = 1;
 	msta->wcid.idx = idx;

 	mt7615_mcu_add_wtbl(dev, vif, sta);
 	mt7615_mcu_set_sta_rec(dev, vif, sta, 1);

 	return 0;
 }

 void mt7615_sta_assoc(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 		      struct ieee80211_sta *sta)
 {
 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);

 	if (sta->ht_cap.ht_supported)
 		mt7615_mcu_set_ht_cap(dev, vif, sta);
 }

 void mt7615_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 		       struct ieee80211_sta *sta)
 {
 	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);

 	mt7615_mcu_set_sta_rec(dev, vif, sta, 0);
 	mt7615_mcu_del_wtbl(dev, sta);
 }

 static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
 				       struct ieee80211_vif *vif,
 				       struct ieee80211_sta *sta)
 {
 	struct mt7615_dev *dev = hw->priv;
 	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
 	struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
 	int i;

 	spin_lock_bh(&dev->mt76.lock);
 	for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
 		msta->rates[i].idx = sta_rates->rate[i].idx;
 		msta->rates[i].count = sta_rates->rate[i].count;
 		msta->rates[i].flags = sta_rates->rate[i].flags;

 		if (msta->rates[i].idx < 0 || !msta->rates[i].count)
 			break;
 	}
 	msta->n_rates = i;
 	mt7615_mac_set_rates(dev, msta, NULL, msta->rates);
 	msta->rate_probe = false;
 	spin_unlock_bh(&dev->mt76.lock);
 }

 static void mt7615_tx(struct ieee80211_hw *hw,
 		      struct ieee80211_tx_control *control,
 		      struct sk_buff *skb)
 {
 	struct mt7615_dev *dev = hw->priv;
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
 	struct ieee80211_vif *vif = info->control.vif;
 	struct mt76_wcid *wcid = &dev->mt76.global_wcid;

 	if (control->sta) {
 		struct mt7615_sta *sta;

 		sta = (struct mt7615_sta *)control->sta->drv_priv;
 		wcid = &sta->wcid;
 	}

 	if (vif && !control->sta) {
 		struct mt7615_vif *mvif;

 		mvif = (struct mt7615_vif *)vif->drv_priv;
 		wcid = &mvif->sta.wcid;
 	}

 	mt76_tx(&dev->mt76, control->sta, wcid, skb);
 }

 static int mt7615_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
 {
 	struct mt7615_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);
 	mt7615_mcu_set_rts_thresh(dev, val);
 	mutex_unlock(&dev->mt76.mutex);

 	return 0;
 }

 static int
 mt7615_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		    struct ieee80211_ampdu_params *params)
 {
 	enum ieee80211_ampdu_mlme_action action = params->action;
 	struct mt7615_dev *dev = hw->priv;
 	struct ieee80211_sta *sta = params->sta;
 	struct ieee80211_txq *txq = sta->txq[params->tid];
 	struct mt7615_sta *msta = (struct mt7615_sta *)sta->drv_priv;
 	u16 tid = params->tid;
 	u16 ssn = params->ssn;
 	struct mt76_txq *mtxq;

 	if (!txq)
 		return -EINVAL;

 	mtxq = (struct mt76_txq *)txq->drv_priv;

 	switch (action) {
 	case IEEE80211_AMPDU_RX_START:
 		mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, ssn,
 				   params->buf_size);
 		mt7615_mcu_set_rx_ba(dev, params, 1);
 		break;
 	case IEEE80211_AMPDU_RX_STOP:
 		mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
 		mt7615_mcu_set_rx_ba(dev, params, 0);
 		break;
 	case IEEE80211_AMPDU_TX_OPERATIONAL:
 		mtxq->aggr = true;
 		mtxq->send_bar = false;
 		mt7615_mcu_set_tx_ba(dev, params, 1);
 		break;
 	case IEEE80211_AMPDU_TX_STOP_FLUSH:
 	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 		mtxq->aggr = false;
 		mt7615_mcu_set_tx_ba(dev, params, 0);
 		break;
 	case IEEE80211_AMPDU_TX_START:
 		mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
 		ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 		break;
 	case IEEE80211_AMPDU_TX_STOP_CONT:
 		mtxq->aggr = false;
 		mt7615_mcu_set_tx_ba(dev, params, 0);
 		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 		break;
 	}

 	return 0;
 }

 const struct ieee80211_ops mt7615_ops = {
 	.tx = mt7615_tx,
 	.start = mt7615_start,
 	.stop = mt7615_stop,
 	.add_interface = mt7615_add_interface,
 	.remove_interface = mt7615_remove_interface,
 	.config = mt7615_config,
 	.conf_tx = mt7615_conf_tx,
 	.configure_filter = mt7615_configure_filter,
 	.bss_info_changed = mt7615_bss_info_changed,
 	.sta_state = mt76_sta_state,
 	.set_key = mt7615_set_key,
 	.ampdu_action = mt7615_ampdu_action,
 	.set_rts_threshold = mt7615_set_rts_threshold,
 	.wake_tx_queue = mt76_wake_tx_queue,
 	.sta_rate_tbl_update = mt7615_sta_rate_tbl_update,
 	.sw_scan_start = mt76_sw_scan,
 	.sw_scan_complete = mt76_sw_scan_complete,
 	.release_buffered_frames = mt76_release_buffered_frames,
 	.get_txpower = mt76_get_txpower,
 	.channel_switch_beacon = mt7615_channel_switch_beacon,
 	.get_survey = mt76_get_survey,
 };
	// SPDX-License-Identifier: ISC
	/* Copyright (C) 2019 MediaTek Inc.
	*
	* Author: Roy Luo <royluo@google.com>
	* Ryder Lee <ryder.lee@mediatek.com>
	* Felix Fietkau <nbd@nbd.name>
	*/

	#include <linux/etherdevice.h>
	#include <linux/platform_device.h>
	#include <linux/pci.h>
	#include <linux/module.h>
	#include "mt7615.h"

	static int mt7615_start(struct ieee80211_hw *hw)
	{
	struct mt7615_dev *dev = hw->priv;

	dev->mt76.survey_time = ktime_get_boottime();
	set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
	MT7615_WATCHDOG_TIME);

	return 0;
	}

	static void mt7615_stop(struct ieee80211_hw *hw)
	{
	struct mt7615_dev *dev = hw->priv;

	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
	cancel_delayed_work_sync(&dev->mt76.mac_work);
	}

	static int get_omac_idx(enum nl80211_iftype type, u32 mask)
	{
	int i;

	switch (type) {
	case NL80211_IFTYPE_AP:
	case NL80211_IFTYPE_MESH_POINT:
	/* ap use hw bssid 0 and ext bssid */
	if (~mask & BIT(HW_BSSID_0))
	return HW_BSSID_0;

	for (i = EXT_BSSID_1; i < EXT_BSSID_END; i++)
	if (~mask & BIT(i))
	return i;

	break;
	case NL80211_IFTYPE_STATION:
	/* sta use hw bssid other than 0 */
	for (i = HW_BSSID_1; i < HW_BSSID_MAX; i++)
	if (~mask & BIT(i))
	return i;

	break;
	default:
	WARN_ON(1);
	break;
	};

	return -1;
	}

	static int mt7615_add_interface(struct ieee80211_hw *hw,
	struct ieee80211_vif *vif)
	{
	struct mt7615_vif mvif = (struct mt7615_vif )vif->drv_priv;
	struct mt7615_dev *dev = hw->priv;
	struct mt76_txq *mtxq;
	int idx, ret = 0;

	mutex_lock(&dev->mt76.mutex);

	mvif->idx = ffs(~dev->vif_mask) - 1;
	if (mvif->idx >= MT7615_MAX_INTERFACES) {
	ret = -ENOSPC;
	goto out;
	}

	idx = get_omac_idx(vif->type, dev->omac_mask);
	if (idx < 0) {
	ret = -ENOSPC;
	goto out;
	}
	mvif->omac_idx = idx;

	/* TODO: DBDC support. Use band 0 for now */
	mvif->band_idx = 0;
	mvif->wmm_idx = mvif->idx % MT7615_MAX_WMM_SETS;

	ret = mt7615_mcu_set_dev_info(dev, vif, 1);
	if (ret)
	goto out;

	dev->vif_mask \|= BIT(mvif->idx);
	dev->omac_mask \|= BIT(mvif->omac_idx);
	idx = MT7615_WTBL_RESERVED - mvif->idx;
	mvif->sta.wcid.idx = idx;
	mvif->sta.wcid.hw_key_idx = -1;

	rcu_assign_pointer(dev->mt76.wcid[idx], &mvif->sta.wcid);
	mtxq = (struct mt76_txq *)vif->txq->drv_priv;
	mtxq->wcid = &mvif->sta.wcid;
	mt76_txq_init(&dev->mt76, vif->txq);

	out:
	mutex_unlock(&dev->mt76.mutex);

	return ret;
	}

	static void mt7615_remove_interface(struct ieee80211_hw *hw,
	struct ieee80211_vif *vif)
	{
	struct mt7615_vif mvif = (struct mt7615_vif )vif->drv_priv;
	struct mt7615_dev *dev = hw->priv;
	int idx = mvif->sta.wcid.idx;

	/* TODO: disable beacon for the bss */

	mt7615_mcu_set_dev_info(dev, vif, 0);

	rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
	mt76_txq_remove(&dev->mt76, vif->txq);

	mutex_lock(&dev->mt76.mutex);
	dev->vif_mask &= ~BIT(mvif->idx);
	dev->omac_mask &= ~BIT(mvif->omac_idx);
	mutex_unlock(&dev->mt76.mutex);
	}

	static int mt7615_set_channel(struct mt7615_dev *dev)
	{
	int ret;

	cancel_delayed_work_sync(&dev->mt76.mac_work);

	mutex_lock(&dev->mt76.mutex);
	set_bit(MT76_RESET, &dev->mt76.state);

	mt7615_dfs_check_channel(dev);

	mt76_set_channel(&dev->mt76);

	ret = mt7615_mcu_set_channel(dev);
	if (ret)
	goto out;

	ret = mt7615_dfs_init_radar_detector(dev);
	mt7615_mac_cca_stats_reset(dev);
	dev->mt76.survey_time = ktime_get_boottime();
	/* TODO: add DBDC support */
	mt76_rr(dev, MT_MIB_SDR16(0));

	out:
	clear_bit(MT76_RESET, &dev->mt76.state);
	mutex_unlock(&dev->mt76.mutex);

	mt76_txq_schedule_all(&dev->mt76);
	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work,
	MT7615_WATCHDOG_TIME);
	return ret;
	}

	static int mt7615_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 mt7615_dev *dev = hw->priv;
	struct mt7615_vif mvif = (struct mt7615_vif )vif->drv_priv;
	struct mt7615_sta msta = sta ? (struct mt7615_sta )sta->drv_priv :
	&mvif->sta;
	struct mt76_wcid *wcid = &msta->wcid;
	int idx = key->keyidx;

	/* The hardware does not support per-STA RX GTK, fallback
	* to software mode for these.
	*/
	if ((vif->type == NL80211_IFTYPE_ADHOC \|\|
	vif->type == NL80211_IFTYPE_MESH_POINT) &&
	(key->cipher == WLAN_CIPHER_SUITE_TKIP \|\|
	key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
	!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
	return -EOPNOTSUPP;

	/* fall back to sw encryption for unsupported ciphers */
	switch (key->cipher) {
	case WLAN_CIPHER_SUITE_AES_CMAC:
	key->flags \|= IEEE80211_KEY_FLAG_GENERATE_MMIE;
	break;
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
	case WLAN_CIPHER_SUITE_TKIP:
	case WLAN_CIPHER_SUITE_CCMP:
	case WLAN_CIPHER_SUITE_CCMP_256:
	case WLAN_CIPHER_SUITE_GCMP:
	case WLAN_CIPHER_SUITE_GCMP_256:
	case WLAN_CIPHER_SUITE_SMS4:
	break;
	default:
	return -EOPNOTSUPP;
	}

	if (cmd == SET_KEY) {
	key->hw_key_idx = wcid->idx;
	wcid->hw_key_idx = idx;
	} else if (idx == wcid->hw_key_idx) {
	wcid->hw_key_idx = -1;
	}
	mt76_wcid_key_setup(&dev->mt76, wcid,
	cmd == SET_KEY ? key : NULL);

	return mt7615_mac_wtbl_set_key(dev, wcid, key, cmd);
	}

	static int mt7615_config(struct ieee80211_hw *hw, u32 changed)
	{
	struct mt7615_dev *dev = hw->priv;
	int ret = 0;

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
	ieee80211_stop_queues(hw);
	ret = mt7615_set_channel(dev);
	ieee80211_wake_queues(hw);
	}

	mutex_lock(&dev->mt76.mutex);

	if (changed & IEEE80211_CONF_CHANGE_POWER)
	ret = mt7615_mcu_set_tx_power(dev);

	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
	if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
	dev->mt76.rxfilter \|= MT_WF_RFCR_DROP_OTHER_UC;
	else
	dev->mt76.rxfilter &= ~MT_WF_RFCR_DROP_OTHER_UC;

	mt76_wr(dev, MT_WF_RFCR, dev->mt76.rxfilter);
	}

	mutex_unlock(&dev->mt76.mutex);

	return ret;
	}

	static int
	mt7615_conf_tx(struct ieee80211_hw hw, struct ieee80211_vif vif, u16 queue,
	const struct ieee80211_tx_queue_params *params)
	{
	struct mt7615_vif mvif = (struct mt7615_vif )vif->drv_priv;
	struct mt7615_dev *dev = hw->priv;

	queue += mvif->wmm_idx * MT7615_MAX_WMM_SETS;

	return mt7615_mcu_set_wmm(dev, queue, params);
	}

	static void mt7615_configure_filter(struct ieee80211_hw *hw,
	unsigned int changed_flags,
	unsigned int *total_flags,
	u64 multicast)
	{
	struct mt7615_dev *dev = hw->priv;
	u32 flags = 0;

	#define MT76_FILTER(_flag, _hw) do { \
	flags \|= *total_flags & FIF_##_flag; \
	dev->mt76.rxfilter &= ~(_hw); \
	dev->mt76.rxfilter \|= !(flags & FIF_##_flag) * (_hw); \
	} while (0)

	dev->mt76.rxfilter &= ~(MT_WF_RFCR_DROP_OTHER_BSS \|
	MT_WF_RFCR_DROP_OTHER_BEACON \|
	MT_WF_RFCR_DROP_FRAME_REPORT \|
	MT_WF_RFCR_DROP_PROBEREQ \|
	MT_WF_RFCR_DROP_MCAST_FILTERED \|
	MT_WF_RFCR_DROP_MCAST \|
	MT_WF_RFCR_DROP_BCAST \|
	MT_WF_RFCR_DROP_DUPLICATE \|
	MT_WF_RFCR_DROP_A2_BSSID \|
	MT_WF_RFCR_DROP_UNWANTED_CTL \|
	MT_WF_RFCR_DROP_STBC_MULTI);

	MT76_FILTER(OTHER_BSS, MT_WF_RFCR_DROP_OTHER_TIM \|
	MT_WF_RFCR_DROP_A3_MAC \|
	MT_WF_RFCR_DROP_A3_BSSID);

	MT76_FILTER(FCSFAIL, MT_WF_RFCR_DROP_FCSFAIL);

	MT76_FILTER(CONTROL, MT_WF_RFCR_DROP_CTS \|
	MT_WF_RFCR_DROP_RTS \|
	MT_WF_RFCR_DROP_CTL_RSV \|
	MT_WF_RFCR_DROP_NDPA);

	*total_flags = flags;
	mt76_wr(dev, MT_WF_RFCR, dev->mt76.rxfilter);
	}

	static void mt7615_bss_info_changed(struct ieee80211_hw *hw,
	struct ieee80211_vif *vif,
	struct ieee80211_bss_conf *info,
	u32 changed)
	{
	struct mt7615_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);

	if (changed & BSS_CHANGED_ASSOC)
	mt7615_mcu_set_bss_info(dev, vif, info->assoc);

	/* TODO: update beacon content
	* BSS_CHANGED_BEACON
	*/

	if (changed & BSS_CHANGED_BEACON_ENABLED) {
	mt7615_mcu_set_bss_info(dev, vif, info->enable_beacon);
	mt7615_mcu_wtbl_bmc(dev, vif, info->enable_beacon);
	mt7615_mcu_set_sta_rec_bmc(dev, vif, info->enable_beacon);
	mt7615_mcu_set_bcn(dev, vif, info->enable_beacon);
	}

	mutex_unlock(&dev->mt76.mutex);
	}

	static void
	mt7615_channel_switch_beacon(struct ieee80211_hw *hw,
	struct ieee80211_vif *vif,
	struct cfg80211_chan_def *chandef)
	{
	struct mt7615_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);
	mt7615_mcu_set_bcn(dev, vif, true);
	mutex_unlock(&dev->mt76.mutex);
	}

	int mt7615_sta_add(struct mt76_dev mdev, struct ieee80211_vif vif,
	struct ieee80211_sta *sta)
	{
	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
	struct mt7615_sta msta = (struct mt7615_sta )sta->drv_priv;
	struct mt7615_vif mvif = (struct mt7615_vif )vif->drv_priv;
	int idx;

	idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1);
	if (idx < 0)
	return -ENOSPC;

	msta->vif = mvif;
	msta->wcid.sta = 1;
	msta->wcid.idx = idx;

	mt7615_mcu_add_wtbl(dev, vif, sta);
	mt7615_mcu_set_sta_rec(dev, vif, sta, 1);

	return 0;
	}

	void mt7615_sta_assoc(struct mt76_dev mdev, struct ieee80211_vif vif,
	struct ieee80211_sta *sta)
	{
	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);

	if (sta->ht_cap.ht_supported)
	mt7615_mcu_set_ht_cap(dev, vif, sta);
	}

	void mt7615_sta_remove(struct mt76_dev mdev, struct ieee80211_vif vif,
	struct ieee80211_sta *sta)
	{
	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);

	mt7615_mcu_set_sta_rec(dev, vif, sta, 0);
	mt7615_mcu_del_wtbl(dev, sta);
	}

	static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
	struct ieee80211_vif *vif,
	struct ieee80211_sta *sta)
	{
	struct mt7615_dev *dev = hw->priv;
	struct mt7615_sta msta = (struct mt7615_sta )sta->drv_priv;
	struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
	int i;

	spin_lock_bh(&dev->mt76.lock);
	for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
	msta->rates[i].idx = sta_rates->rate[i].idx;
	msta->rates[i].count = sta_rates->rate[i].count;
	msta->rates[i].flags = sta_rates->rate[i].flags;

	if (msta->rates[i].idx < 0 \|\| !msta->rates[i].count)
	break;
	}
	msta->n_rates = i;
	mt7615_mac_set_rates(dev, msta, NULL, msta->rates);
	msta->rate_probe = false;
	spin_unlock_bh(&dev->mt76.lock);
	}

	static void mt7615_tx(struct ieee80211_hw *hw,
	struct ieee80211_tx_control *control,
	struct sk_buff *skb)
	{
	struct mt7615_dev *dev = hw->priv;
	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
	struct ieee80211_vif *vif = info->control.vif;
	struct mt76_wcid *wcid = &dev->mt76.global_wcid;

	if (control->sta) {
	struct mt7615_sta *sta;

	sta = (struct mt7615_sta *)control->sta->drv_priv;
	wcid = &sta->wcid;
	}

	if (vif && !control->sta) {
	struct mt7615_vif *mvif;

	mvif = (struct mt7615_vif *)vif->drv_priv;
	wcid = &mvif->sta.wcid;
	}

	mt76_tx(&dev->mt76, control->sta, wcid, skb);
	}

	static int mt7615_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
	{
	struct mt7615_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);
	mt7615_mcu_set_rts_thresh(dev, val);
	mutex_unlock(&dev->mt76.mutex);

	return 0;
	}

	static int
	mt7615_ampdu_action(struct ieee80211_hw hw, struct ieee80211_vif vif,
	struct ieee80211_ampdu_params *params)
	{
	enum ieee80211_ampdu_mlme_action action = params->action;
	struct mt7615_dev *dev = hw->priv;
	struct ieee80211_sta *sta = params->sta;
	struct ieee80211_txq *txq = sta->txq[params->tid];
	struct mt7615_sta msta = (struct mt7615_sta )sta->drv_priv;
	u16 tid = params->tid;
	u16 ssn = params->ssn;
	struct mt76_txq *mtxq;

	if (!txq)
	return -EINVAL;

	mtxq = (struct mt76_txq *)txq->drv_priv;

	switch (action) {
	case IEEE80211_AMPDU_RX_START:
	mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, ssn,
	params->buf_size);
	mt7615_mcu_set_rx_ba(dev, params, 1);
	break;
	case IEEE80211_AMPDU_RX_STOP:
	mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
	mt7615_mcu_set_rx_ba(dev, params, 0);
	break;
	case IEEE80211_AMPDU_TX_OPERATIONAL:
	mtxq->aggr = true;
	mtxq->send_bar = false;
	mt7615_mcu_set_tx_ba(dev, params, 1);
	break;
	case IEEE80211_AMPDU_TX_STOP_FLUSH:
	case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
	mtxq->aggr = false;
	mt7615_mcu_set_tx_ba(dev, params, 0);
	break;
	case IEEE80211_AMPDU_TX_START:
	mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
	ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
	break;
	case IEEE80211_AMPDU_TX_STOP_CONT:
	mtxq->aggr = false;
	mt7615_mcu_set_tx_ba(dev, params, 0);
	ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
	break;
	}

	return 0;
	}

	const struct ieee80211_ops mt7615_ops = {
	.tx = mt7615_tx,
	.start = mt7615_start,
	.stop = mt7615_stop,
	.add_interface = mt7615_add_interface,
	.remove_interface = mt7615_remove_interface,
	.config = mt7615_config,
	.conf_tx = mt7615_conf_tx,
	.configure_filter = mt7615_configure_filter,
	.bss_info_changed = mt7615_bss_info_changed,
	.sta_state = mt76_sta_state,
	.set_key = mt7615_set_key,
	.ampdu_action = mt7615_ampdu_action,
	.set_rts_threshold = mt7615_set_rts_threshold,
	.wake_tx_queue = mt76_wake_tx_queue,
	.sta_rate_tbl_update = mt7615_sta_rate_tbl_update,
	.sw_scan_start = mt76_sw_scan,
	.sw_scan_complete = mt76_sw_scan_complete,
	.release_buffered_frames = mt76_release_buffered_frames,
	.get_txpower = mt76_get_txpower,
	.channel_switch_beacon = mt7615_channel_switch_beacon,
	.get_survey = mt76_get_survey,
	};