345 lines
8.5 KiB
C
345 lines
8.5 KiB
C
/*
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* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "mt76x2.h"
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static int
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mt76x2_start(struct ieee80211_hw *hw)
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{
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struct mt76x2_dev *dev = hw->priv;
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int ret;
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mutex_lock(&dev->mutex);
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ret = mt76x2_mac_start(dev);
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if (ret)
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goto out;
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ret = mt76x2_phy_start(dev);
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if (ret)
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goto out;
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ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mac_work,
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MT_CALIBRATE_INTERVAL);
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set_bit(MT76_STATE_RUNNING, &dev->mt76.state);
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out:
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mutex_unlock(&dev->mutex);
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return ret;
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}
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static void
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mt76x2_stop(struct ieee80211_hw *hw)
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{
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struct mt76x2_dev *dev = hw->priv;
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mutex_lock(&dev->mutex);
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clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
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mt76x2_stop_hardware(dev);
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mutex_unlock(&dev->mutex);
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}
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static int
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mt76x2_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
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{
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struct mt76x2_dev *dev = hw->priv;
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struct mt76x2_vif *mvif = (struct mt76x2_vif *) vif->drv_priv;
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unsigned int idx = 0;
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if (vif->addr[0] & BIT(1))
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idx = 1 + (((dev->mt76.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
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/*
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* Client mode typically only has one configurable BSSID register,
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* which is used for bssidx=0. This is linked to the MAC address.
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* Since mac80211 allows changing interface types, and we cannot
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* force the use of the primary MAC address for a station mode
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* interface, we need some other way of configuring a per-interface
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* remote BSSID.
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* The hardware provides an AP-Client feature, where bssidx 0-7 are
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* used for AP mode and bssidx 8-15 for client mode.
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* We shift the station interface bss index by 8 to force the
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* hardware to recognize the BSSID.
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* The resulting bssidx mismatch for unicast frames is ignored by hw.
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*/
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if (vif->type == NL80211_IFTYPE_STATION)
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idx += 8;
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mvif->idx = idx;
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mvif->group_wcid.idx = MT_VIF_WCID(idx);
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mvif->group_wcid.hw_key_idx = -1;
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mt76x2_txq_init(dev, vif->txq);
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return 0;
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}
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static int
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mt76x2_set_channel(struct mt76x2_dev *dev, struct cfg80211_chan_def *chandef)
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{
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int ret;
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cancel_delayed_work_sync(&dev->cal_work);
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set_bit(MT76_RESET, &dev->mt76.state);
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mt76_set_channel(&dev->mt76);
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tasklet_disable(&dev->pre_tbtt_tasklet);
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tasklet_disable(&dev->dfs_pd.dfs_tasklet);
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mt76x2_mac_stop(dev, true);
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ret = mt76x2_phy_set_channel(dev, chandef);
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/* channel cycle counters read-and-clear */
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mt76_rr(dev, MT_CH_IDLE);
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mt76_rr(dev, MT_CH_BUSY);
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mt76x2_dfs_init_params(dev);
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mt76x2_mac_resume(dev);
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tasklet_enable(&dev->dfs_pd.dfs_tasklet);
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tasklet_enable(&dev->pre_tbtt_tasklet);
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clear_bit(MT76_RESET, &dev->mt76.state);
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mt76_txq_schedule_all(&dev->mt76);
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return ret;
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}
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static int
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mt76x2_config(struct ieee80211_hw *hw, u32 changed)
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{
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struct mt76x2_dev *dev = hw->priv;
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int ret = 0;
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mutex_lock(&dev->mutex);
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if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
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if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
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dev->rxfilter |= MT_RX_FILTR_CFG_PROMISC;
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else
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dev->rxfilter &= ~MT_RX_FILTR_CFG_PROMISC;
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mt76_wr(dev, MT_RX_FILTR_CFG, dev->rxfilter);
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}
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if (changed & IEEE80211_CONF_CHANGE_POWER) {
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dev->txpower_conf = hw->conf.power_level * 2;
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/* convert to per-chain power for 2x2 devices */
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dev->txpower_conf -= 6;
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if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) {
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mt76x2_phy_set_txpower(dev);
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mt76x2_tx_set_txpwr_auto(dev, dev->txpower_conf);
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}
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}
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if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
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ieee80211_stop_queues(hw);
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ret = mt76x2_set_channel(dev, &hw->conf.chandef);
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ieee80211_wake_queues(hw);
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}
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mutex_unlock(&dev->mutex);
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return ret;
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}
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static void
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mt76x2_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
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struct ieee80211_bss_conf *info, u32 changed)
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{
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struct mt76x2_dev *dev = hw->priv;
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struct mt76x2_vif *mvif = (struct mt76x2_vif *) vif->drv_priv;
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mutex_lock(&dev->mutex);
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if (changed & BSS_CHANGED_BSSID)
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mt76x2_mac_set_bssid(dev, mvif->idx, info->bssid);
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if (changed & BSS_CHANGED_BEACON_INT) {
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mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
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MT_BEACON_TIME_CFG_INTVAL,
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info->beacon_int << 4);
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dev->beacon_int = info->beacon_int;
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dev->tbtt_count = 0;
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}
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if (changed & BSS_CHANGED_BEACON_ENABLED) {
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tasklet_disable(&dev->pre_tbtt_tasklet);
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mt76x2_mac_set_beacon_enable(dev, mvif->idx,
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info->enable_beacon);
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tasklet_enable(&dev->pre_tbtt_tasklet);
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}
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if (changed & BSS_CHANGED_ERP_SLOT) {
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int slottime = info->use_short_slot ? 9 : 20;
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dev->slottime = slottime;
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mt76x2_set_tx_ackto(dev);
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}
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mutex_unlock(&dev->mutex);
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}
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void
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mt76x2_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, bool ps)
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{
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struct mt76x2_sta *msta = (struct mt76x2_sta *) sta->drv_priv;
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struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
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int idx = msta->wcid.idx;
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mt76_stop_tx_queues(&dev->mt76, sta, true);
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mt76x2_mac_wcid_set_drop(dev, idx, ps);
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}
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static void
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mt76x2_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
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const u8 *mac)
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{
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struct mt76x2_dev *dev = hw->priv;
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tasklet_disable(&dev->pre_tbtt_tasklet);
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set_bit(MT76_SCANNING, &dev->mt76.state);
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}
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static void
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mt76x2_sw_scan_complete(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
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{
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struct mt76x2_dev *dev = hw->priv;
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clear_bit(MT76_SCANNING, &dev->mt76.state);
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tasklet_enable(&dev->pre_tbtt_tasklet);
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}
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static void
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mt76x2_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
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u32 queues, bool drop)
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{
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}
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static int
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mt76x2_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int *dbm)
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{
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struct mt76x2_dev *dev = hw->priv;
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*dbm = dev->txpower_cur / 2;
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/* convert from per-chain power to combined output on 2x2 devices */
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*dbm += 3;
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return 0;
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}
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static void mt76x2_set_coverage_class(struct ieee80211_hw *hw,
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s16 coverage_class)
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{
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struct mt76x2_dev *dev = hw->priv;
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mutex_lock(&dev->mutex);
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dev->coverage_class = coverage_class;
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mt76x2_set_tx_ackto(dev);
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mutex_unlock(&dev->mutex);
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}
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static int
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mt76x2_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
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{
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return 0;
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}
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static int mt76x2_set_antenna(struct ieee80211_hw *hw, u32 tx_ant,
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u32 rx_ant)
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{
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struct mt76x2_dev *dev = hw->priv;
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if (!tx_ant || tx_ant > 3 || tx_ant != rx_ant)
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return -EINVAL;
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mutex_lock(&dev->mutex);
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dev->chainmask = (tx_ant == 3) ? 0x202 : 0x101;
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dev->mt76.antenna_mask = tx_ant;
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mt76_set_stream_caps(&dev->mt76, true);
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mt76x2_phy_set_antenna(dev);
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mutex_unlock(&dev->mutex);
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return 0;
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}
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static int mt76x2_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant,
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u32 *rx_ant)
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{
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struct mt76x2_dev *dev = hw->priv;
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mutex_lock(&dev->mutex);
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*tx_ant = dev->mt76.antenna_mask;
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*rx_ant = dev->mt76.antenna_mask;
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mutex_unlock(&dev->mutex);
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return 0;
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}
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static int
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mt76x2_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
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{
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struct mt76x2_dev *dev = hw->priv;
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if (val != ~0 && val > 0xffff)
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return -EINVAL;
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mutex_lock(&dev->mutex);
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mt76x2_mac_set_tx_protection(dev, val);
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mutex_unlock(&dev->mutex);
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return 0;
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}
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const struct ieee80211_ops mt76x2_ops = {
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.tx = mt76x2_tx,
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.start = mt76x2_start,
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.stop = mt76x2_stop,
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.add_interface = mt76x2_add_interface,
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.remove_interface = mt76x2_remove_interface,
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.config = mt76x2_config,
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.configure_filter = mt76x2_configure_filter,
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.bss_info_changed = mt76x2_bss_info_changed,
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.sta_add = mt76x2_sta_add,
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.sta_remove = mt76x2_sta_remove,
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.set_key = mt76x2_set_key,
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.conf_tx = mt76x2_conf_tx,
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.sw_scan_start = mt76x2_sw_scan,
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.sw_scan_complete = mt76x2_sw_scan_complete,
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.flush = mt76x2_flush,
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.ampdu_action = mt76x2_ampdu_action,
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.get_txpower = mt76x2_get_txpower,
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.wake_tx_queue = mt76_wake_tx_queue,
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.sta_rate_tbl_update = mt76x2_sta_rate_tbl_update,
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.release_buffered_frames = mt76_release_buffered_frames,
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.set_coverage_class = mt76x2_set_coverage_class,
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.get_survey = mt76_get_survey,
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.set_tim = mt76x2_set_tim,
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.set_antenna = mt76x2_set_antenna,
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.get_antenna = mt76x2_get_antenna,
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.set_rts_threshold = mt76x2_set_rts_threshold,
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};
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