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/*
* 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"
#include "mt76x02_util.h"
static int
mt76x2_start(struct ieee80211_hw *hw)
{
struct mt76x2_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 mt76x2_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 mt76x2_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 mt76x2_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);
mt76x2_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 mt76x2_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 mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
int idx = msta->wcid.idx;
mt76_stop_tx_queues(&dev->mt76, sta, true);
mt76x02_mac_wcid_set_drop(&dev->mt76, idx, ps);
}
static void
mt76x2_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
const u8 *mac)
{
struct mt76x2_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 mt76x2_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 mt76x2_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 mt76x2_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 mt76x2_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 mt76x2_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 mt76x2_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 = mt76x2_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,
};
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