drivers/net/wireless/mediatek/mt76/mt76x2/pci_main.c - pub/scm/linux/kernel/git/daveh/x86-mm - Git at Google

 /*
  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  *
  * 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 "mt76x2.h"

 static int
 mt76x2_start(struct ieee80211_hw *hw)
 {
 	struct mt76x02_dev *dev = hw->priv;
 	int ret;

 	mutex_lock(&dev->mt76.mutex);

 	ret = mt76x2_mac_start(dev);
 	if (ret)
 		goto out;

 	ret = mt76x2_phy_start(dev);
 	if (ret)
 		goto out;

 	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mac_work,
 				     MT_CALIBRATE_INTERVAL);

 	set_bit(MT76_STATE_RUNNING, &dev->mt76.state);

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

 static void
 mt76x2_stop(struct ieee80211_hw *hw)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);
 	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
 	mt76x2_stop_hardware(dev);
 	mutex_unlock(&dev->mt76.mutex);
 }

 static int
 mt76x2_set_channel(struct mt76x02_dev *dev, struct cfg80211_chan_def *chandef)
 {
 	int ret;

 	cancel_delayed_work_sync(&dev->cal_work);

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

 	mt76_set_channel(&dev->mt76);

 	tasklet_disable(&dev->pre_tbtt_tasklet);
 	tasklet_disable(&dev->dfs_pd.dfs_tasklet);

 	mt76x2_mac_stop(dev, true);
 	ret = mt76x2_phy_set_channel(dev, chandef);

 	/* channel cycle counters read-and-clear */
 	mt76_rr(dev, MT_CH_IDLE);
 	mt76_rr(dev, MT_CH_BUSY);

 	mt76x2_dfs_init_params(dev);

 	mt76x2_mac_resume(dev);
 	tasklet_enable(&dev->dfs_pd.dfs_tasklet);
 	tasklet_enable(&dev->pre_tbtt_tasklet);

 	clear_bit(MT76_RESET, &dev->mt76.state);

 	mt76_txq_schedule_all(&dev->mt76);

 	return ret;
 }

 static int
 mt76x2_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mt76x02_dev *dev = hw->priv;
 	int ret = 0;

 	mutex_lock(&dev->mt76.mutex);

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

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

 	if (changed & IEEE80211_CONF_CHANGE_POWER) {
 		dev->mt76.txpower_conf = hw->conf.power_level * 2;

 		/* convert to per-chain power for 2x2 devices */
 		dev->mt76.txpower_conf -= 6;

 		if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) {
 			mt76x2_phy_set_txpower(dev);
 			mt76x02_tx_set_txpwr_auto(dev, dev->mt76.txpower_conf);
 		}
 	}

 	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
 		ieee80211_stop_queues(hw);
 		ret = mt76x2_set_channel(dev, &hw->conf.chandef);
 		ieee80211_wake_queues(hw);
 	}

 	mutex_unlock(&dev->mt76.mutex);

 	return ret;
 }

 static void
 mt76x2_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			struct ieee80211_bss_conf *info, u32 changed)
 {
 	struct mt76x02_dev *dev = hw->priv;
 	struct mt76x02_vif *mvif = (struct mt76x02_vif *) vif->drv_priv;

 	mutex_lock(&dev->mt76.mutex);

 	if (changed & BSS_CHANGED_BSSID)
 		mt76x2_mac_set_bssid(dev, mvif->idx, info->bssid);

 	if (changed & BSS_CHANGED_BEACON_INT) {
 		mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
 			       MT_BEACON_TIME_CFG_INTVAL,
 			       info->beacon_int << 4);
 		dev->beacon_int = info->beacon_int;
 		dev->tbtt_count = 0;
 	}

 	if (changed & BSS_CHANGED_BEACON_ENABLED) {
 		tasklet_disable(&dev->pre_tbtt_tasklet);
 		mt76x2_mac_set_beacon_enable(dev, mvif->idx,
 					     info->enable_beacon);
 		tasklet_enable(&dev->pre_tbtt_tasklet);
 	}

 	if (changed & BSS_CHANGED_ERP_SLOT) {
 		int slottime = info->use_short_slot ? 9 : 20;

 		dev->slottime = slottime;
 		mt76x2_set_tx_ackto(dev);
 	}

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

 void
 mt76x2_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
 {
 	struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv;
 	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 	int idx = msta->wcid.idx;

 	mt76_stop_tx_queues(&dev->mt76, sta, true);
 	mt76x02_mac_wcid_set_drop(dev, idx, ps);
 }

 static void
 mt76x2_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	       const u8 *mac)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	tasklet_disable(&dev->pre_tbtt_tasklet);
 	set_bit(MT76_SCANNING, &dev->mt76.state);
 }

 static void
 mt76x2_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	clear_bit(MT76_SCANNING, &dev->mt76.state);
 	tasklet_enable(&dev->pre_tbtt_tasklet);
 }

 static void
 mt76x2_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	     u32 queues, bool drop)
 {
 }

 static int
 mt76x2_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int *dbm)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	*dbm = dev->mt76.txpower_cur / 2;

 	/* convert from per-chain power to combined output on 2x2 devices */
 	*dbm += 3;

 	return 0;
 }

 static void mt76x2_set_coverage_class(struct ieee80211_hw *hw,
 				      s16 coverage_class)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);
 	dev->coverage_class = coverage_class;
 	mt76x2_set_tx_ackto(dev);
 	mutex_unlock(&dev->mt76.mutex);
 }

 static int
 mt76x2_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
 {
 	return 0;
 }

 static int mt76x2_set_antenna(struct ieee80211_hw *hw, u32 tx_ant,
 			      u32 rx_ant)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	if (!tx_ant || tx_ant > 3 || tx_ant != rx_ant)
 		return -EINVAL;

 	mutex_lock(&dev->mt76.mutex);

 	dev->mt76.chainmask = (tx_ant == 3) ? 0x202 : 0x101;
 	dev->mt76.antenna_mask = tx_ant;

 	mt76_set_stream_caps(&dev->mt76, true);
 	mt76x2_phy_set_antenna(dev);

 	mutex_unlock(&dev->mt76.mutex);

 	return 0;
 }

 static int mt76x2_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant,
 			      u32 *rx_ant)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	mutex_lock(&dev->mt76.mutex);
 	*tx_ant = dev->mt76.antenna_mask;
 	*rx_ant = dev->mt76.antenna_mask;
 	mutex_unlock(&dev->mt76.mutex);

 	return 0;
 }

 static int
 mt76x2_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
 {
 	struct mt76x02_dev *dev = hw->priv;

 	if (val != ~0 && val > 0xffff)
 		return -EINVAL;

 	mutex_lock(&dev->mutex);
 	mt76x2_mac_set_tx_protection(dev, val);
 	mutex_unlock(&dev->mutex);

 	return 0;
 }

 const struct ieee80211_ops mt76x2_ops = {
 	.tx = mt76x02_tx,
 	.start = mt76x2_start,
 	.stop = mt76x2_stop,
 	.add_interface = mt76x02_add_interface,
 	.remove_interface = mt76x02_remove_interface,
 	.config = mt76x2_config,
 	.configure_filter = mt76x02_configure_filter,
 	.bss_info_changed = mt76x2_bss_info_changed,
 	.sta_add = mt76x02_sta_add,
 	.sta_remove = mt76x02_sta_remove,
 	.set_key = mt76x02_set_key,
 	.conf_tx = mt76x02_conf_tx,
 	.sw_scan_start = mt76x2_sw_scan,
 	.sw_scan_complete = mt76x2_sw_scan_complete,
 	.flush = mt76x2_flush,
 	.ampdu_action = mt76x02_ampdu_action,
 	.get_txpower = mt76x2_get_txpower,
 	.wake_tx_queue = mt76_wake_tx_queue,
 	.sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
 	.release_buffered_frames = mt76_release_buffered_frames,
 	.set_coverage_class = mt76x2_set_coverage_class,
 	.get_survey = mt76_get_survey,
 	.set_tim = mt76x2_set_tim,
 	.set_antenna = mt76x2_set_antenna,
 	.get_antenna = mt76x2_get_antenna,
 	.set_rts_threshold = mt76x2_set_rts_threshold,
 };
	/*
	* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
	*
	* 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 "mt76x2.h"

	static int
	mt76x2_start(struct ieee80211_hw *hw)
	{
	struct mt76x02_dev *dev = hw->priv;
	int ret;

	mutex_lock(&dev->mt76.mutex);

	ret = mt76x2_mac_start(dev);
	if (ret)
	goto out;

	ret = mt76x2_phy_start(dev);
	if (ret)
	goto out;

	ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mac_work,
	MT_CALIBRATE_INTERVAL);

	set_bit(MT76_STATE_RUNNING, &dev->mt76.state);

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

	static void
	mt76x2_stop(struct ieee80211_hw *hw)
	{
	struct mt76x02_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);
	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
	mt76x2_stop_hardware(dev);
	mutex_unlock(&dev->mt76.mutex);
	}

	static int
	mt76x2_set_channel(struct mt76x02_dev dev, struct cfg80211_chan_def chandef)
	{
	int ret;

	cancel_delayed_work_sync(&dev->cal_work);

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

	mt76_set_channel(&dev->mt76);

	tasklet_disable(&dev->pre_tbtt_tasklet);
	tasklet_disable(&dev->dfs_pd.dfs_tasklet);

	mt76x2_mac_stop(dev, true);
	ret = mt76x2_phy_set_channel(dev, chandef);

	/* channel cycle counters read-and-clear */
	mt76_rr(dev, MT_CH_IDLE);
	mt76_rr(dev, MT_CH_BUSY);

	mt76x2_dfs_init_params(dev);

	mt76x2_mac_resume(dev);
	tasklet_enable(&dev->dfs_pd.dfs_tasklet);
	tasklet_enable(&dev->pre_tbtt_tasklet);

	clear_bit(MT76_RESET, &dev->mt76.state);

	mt76_txq_schedule_all(&dev->mt76);

	return ret;
	}

	static int
	mt76x2_config(struct ieee80211_hw *hw, u32 changed)
	{
	struct mt76x02_dev *dev = hw->priv;
	int ret = 0;

	mutex_lock(&dev->mt76.mutex);

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

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

	if (changed & IEEE80211_CONF_CHANGE_POWER) {
	dev->mt76.txpower_conf = hw->conf.power_level * 2;

	/* convert to per-chain power for 2x2 devices */
	dev->mt76.txpower_conf -= 6;

	if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) {
	mt76x2_phy_set_txpower(dev);
	mt76x02_tx_set_txpwr_auto(dev, dev->mt76.txpower_conf);
	}
	}

	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
	ieee80211_stop_queues(hw);
	ret = mt76x2_set_channel(dev, &hw->conf.chandef);
	ieee80211_wake_queues(hw);
	}

	mutex_unlock(&dev->mt76.mutex);

	return ret;
	}

	static void
	mt76x2_bss_info_changed(struct ieee80211_hw hw, struct ieee80211_vif vif,
	struct ieee80211_bss_conf *info, u32 changed)
	{
	struct mt76x02_dev *dev = hw->priv;
	struct mt76x02_vif mvif = (struct mt76x02_vif ) vif->drv_priv;

	mutex_lock(&dev->mt76.mutex);

	if (changed & BSS_CHANGED_BSSID)
	mt76x2_mac_set_bssid(dev, mvif->idx, info->bssid);

	if (changed & BSS_CHANGED_BEACON_INT) {
	mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
	MT_BEACON_TIME_CFG_INTVAL,
	info->beacon_int << 4);
	dev->beacon_int = info->beacon_int;
	dev->tbtt_count = 0;
	}

	if (changed & BSS_CHANGED_BEACON_ENABLED) {
	tasklet_disable(&dev->pre_tbtt_tasklet);
	mt76x2_mac_set_beacon_enable(dev, mvif->idx,
	info->enable_beacon);
	tasklet_enable(&dev->pre_tbtt_tasklet);
	}

	if (changed & BSS_CHANGED_ERP_SLOT) {
	int slottime = info->use_short_slot ? 9 : 20;

	dev->slottime = slottime;
	mt76x2_set_tx_ackto(dev);
	}

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

	void
	mt76x2_sta_ps(struct mt76_dev mdev, struct ieee80211_sta sta, bool ps)
	{
	struct mt76x02_sta msta = (struct mt76x02_sta ) sta->drv_priv;
	struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
	int idx = msta->wcid.idx;

	mt76_stop_tx_queues(&dev->mt76, sta, true);
	mt76x02_mac_wcid_set_drop(dev, idx, ps);
	}

	static void
	mt76x2_sw_scan(struct ieee80211_hw hw, struct ieee80211_vif vif,
	const u8 *mac)
	{
	struct mt76x02_dev *dev = hw->priv;

	tasklet_disable(&dev->pre_tbtt_tasklet);
	set_bit(MT76_SCANNING, &dev->mt76.state);
	}

	static void
	mt76x2_sw_scan_complete(struct ieee80211_hw hw, struct ieee80211_vif vif)
	{
	struct mt76x02_dev *dev = hw->priv;

	clear_bit(MT76_SCANNING, &dev->mt76.state);
	tasklet_enable(&dev->pre_tbtt_tasklet);
	}

	static void
	mt76x2_flush(struct ieee80211_hw hw, struct ieee80211_vif vif,
	u32 queues, bool drop)
	{
	}

	static int
	mt76x2_get_txpower(struct ieee80211_hw hw, struct ieee80211_vif vif, int *dbm)
	{
	struct mt76x02_dev *dev = hw->priv;

	*dbm = dev->mt76.txpower_cur / 2;

	/* convert from per-chain power to combined output on 2x2 devices */
	*dbm += 3;

	return 0;
	}

	static void mt76x2_set_coverage_class(struct ieee80211_hw *hw,
	s16 coverage_class)
	{
	struct mt76x02_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);
	dev->coverage_class = coverage_class;
	mt76x2_set_tx_ackto(dev);
	mutex_unlock(&dev->mt76.mutex);
	}

	static int
	mt76x2_set_tim(struct ieee80211_hw hw, struct ieee80211_sta sta, bool set)
	{
	return 0;
	}

	static int mt76x2_set_antenna(struct ieee80211_hw *hw, u32 tx_ant,
	u32 rx_ant)
	{
	struct mt76x02_dev *dev = hw->priv;

	if (!tx_ant \|\| tx_ant > 3 \|\| tx_ant != rx_ant)
	return -EINVAL;

	mutex_lock(&dev->mt76.mutex);

	dev->mt76.chainmask = (tx_ant == 3) ? 0x202 : 0x101;
	dev->mt76.antenna_mask = tx_ant;

	mt76_set_stream_caps(&dev->mt76, true);
	mt76x2_phy_set_antenna(dev);

	mutex_unlock(&dev->mt76.mutex);

	return 0;
	}

	static int mt76x2_get_antenna(struct ieee80211_hw hw, u32 tx_ant,
	u32 *rx_ant)
	{
	struct mt76x02_dev *dev = hw->priv;

	mutex_lock(&dev->mt76.mutex);
	*tx_ant = dev->mt76.antenna_mask;
	*rx_ant = dev->mt76.antenna_mask;
	mutex_unlock(&dev->mt76.mutex);

	return 0;
	}

	static int
	mt76x2_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
	{
	struct mt76x02_dev *dev = hw->priv;

	if (val != ~0 && val > 0xffff)
	return -EINVAL;

	mutex_lock(&dev->mutex);
	mt76x2_mac_set_tx_protection(dev, val);
	mutex_unlock(&dev->mutex);

	return 0;
	}

	const struct ieee80211_ops mt76x2_ops = {
	.tx = mt76x02_tx,
	.start = mt76x2_start,
	.stop = mt76x2_stop,
	.add_interface = mt76x02_add_interface,
	.remove_interface = mt76x02_remove_interface,
	.config = mt76x2_config,
	.configure_filter = mt76x02_configure_filter,
	.bss_info_changed = mt76x2_bss_info_changed,
	.sta_add = mt76x02_sta_add,
	.sta_remove = mt76x02_sta_remove,
	.set_key = mt76x02_set_key,
	.conf_tx = mt76x02_conf_tx,
	.sw_scan_start = mt76x2_sw_scan,
	.sw_scan_complete = mt76x2_sw_scan_complete,
	.flush = mt76x2_flush,
	.ampdu_action = mt76x02_ampdu_action,
	.get_txpower = mt76x2_get_txpower,
	.wake_tx_queue = mt76_wake_tx_queue,
	.sta_rate_tbl_update = mt76x02_sta_rate_tbl_update,
	.release_buffered_frames = mt76_release_buffered_frames,
	.set_coverage_class = mt76x2_set_coverage_class,
	.get_survey = mt76_get_survey,
	.set_tim = mt76x2_set_tim,
	.set_antenna = mt76x2_set_antenna,
	.get_antenna = mt76x2_get_antenna,
	.set_rts_threshold = mt76x2_set_rts_threshold,
	};