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/*
* Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
* Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "mt76x0.h"
#include "mac.h"
#include "../mt76x02_util.h"
#include <linux/etherdevice.h>
static int mt76x0_start(struct ieee80211_hw *hw)
{
struct mt76x0_dev *dev = hw->priv;
int ret;
mutex_lock(&dev->mt76.mutex);
ret = mt76x0_mac_start(dev);
if (ret)
goto out;
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->mac_work,
MT_CALIBRATE_INTERVAL);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
MT_CALIBRATE_INTERVAL);
out:
mutex_unlock(&dev->mt76.mutex);
return ret;
}
static void mt76x0_stop(struct ieee80211_hw *hw)
{
struct mt76x0_dev *dev = hw->priv;
mutex_lock(&dev->mt76.mutex);
cancel_delayed_work_sync(&dev->cal_work);
cancel_delayed_work_sync(&dev->mac_work);
mt76x0_mac_stop(dev);
mutex_unlock(&dev->mt76.mutex);
}
static int mt76x0_add_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mt76x0_dev *dev = hw->priv;
unsigned int idx = 0;
mt76x02_vif_init(&dev->mt76, vif, idx);
return 0;
}
static void mt76x0_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mt76x0_dev *dev = hw->priv;
mt76_txq_remove(&dev->mt76, vif->txq);
}
static int mt76x0_config(struct ieee80211_hw *hw, u32 changed)
{
struct mt76x0_dev *dev = hw->priv;
int ret = 0;
mutex_lock(&dev->mt76.mutex);
if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
ieee80211_stop_queues(hw);
ret = mt76x0_phy_set_channel(dev, &hw->conf.chandef);
ieee80211_wake_queues(hw);
}
mutex_unlock(&dev->mt76.mutex);
return ret;
}
static void
mt76x0_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info, u32 changed)
{
struct mt76x0_dev *dev = hw->priv;
mutex_lock(&dev->mt76.mutex);
if (changed & BSS_CHANGED_ASSOC)
mt76x0_phy_con_cal_onoff(dev, info);
if (changed & BSS_CHANGED_BSSID) {
mt76x0_addr_wr(dev, MT_MAC_BSSID_DW0, info->bssid);
/* Note: this is a hack because beacon_int is not changed
* on leave nor is any more appropriate event generated.
* rt2x00 doesn't seem to be bothered though.
*/
if (is_zero_ether_addr(info->bssid))
mt76x0_mac_config_tsf(dev, false, 0);
}
if (changed & BSS_CHANGED_BASIC_RATES) {
mt76_wr(dev, MT_LEGACY_BASIC_RATE, info->basic_rates);
mt76_wr(dev, MT_VHT_HT_FBK_CFG0, 0x65432100);
mt76_wr(dev, MT_VHT_HT_FBK_CFG1, 0xedcba980);
mt76_wr(dev, MT_LG_FBK_CFG0, 0xedcba988);
mt76_wr(dev, MT_LG_FBK_CFG1, 0x00002100);
}
if (changed & BSS_CHANGED_BEACON_INT)
mt76x0_mac_config_tsf(dev, true, info->beacon_int);
if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
mt76x0_mac_set_protection(dev, info->use_cts_prot,
info->ht_operation_mode);
if (changed & BSS_CHANGED_ERP_PREAMBLE)
mt76x0_mac_set_short_preamble(dev, info->use_short_preamble);
if (changed & BSS_CHANGED_ERP_SLOT) {
int slottime = info->use_short_slot ? 9 : 20;
mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
}
if (changed & BSS_CHANGED_ASSOC)
mt76x0_phy_recalibrate_after_assoc(dev);
mutex_unlock(&dev->mt76.mutex);
}
static void
mt76x0_sw_scan(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
const u8 *mac_addr)
{
struct mt76x0_dev *dev = hw->priv;
cancel_delayed_work_sync(&dev->cal_work);
mt76x0_agc_save(dev);
set_bit(MT76_SCANNING, &dev->mt76.state);
}
static void
mt76x0_sw_scan_complete(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mt76x0_dev *dev = hw->priv;
mt76x0_agc_restore(dev);
clear_bit(MT76_SCANNING, &dev->mt76.state);
ieee80211_queue_delayed_work(dev->mt76.hw, &dev->cal_work,
MT_CALIBRATE_INTERVAL);
}
static int mt76x0_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
struct mt76x0_dev *dev = hw->priv;
mt76_rmw_field(dev, MT_TX_RTS_CFG, MT_TX_RTS_CFG_THRESH, value);
return 0;
}
static void
mt76_sta_rate_tbl_update(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mt76x0_dev *dev = hw->priv;
struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv;
struct ieee80211_sta_rates *rates;
struct ieee80211_tx_rate rate = {};
rcu_read_lock();
rates = rcu_dereference(sta->rates);
if (!rates)
goto out;
rate.idx = rates->rate[0].idx;
rate.flags = rates->rate[0].flags;
mt76x0_mac_wcid_set_rate(dev, &msta->wcid, &rate);
out:
rcu_read_unlock();
}
const struct ieee80211_ops mt76x0_ops = {
.tx = mt76x0_tx,
.start = mt76x0_start,
.stop = mt76x0_stop,
.add_interface = mt76x0_add_interface,
.remove_interface = mt76x0_remove_interface,
.config = mt76x0_config,
.configure_filter = mt76x02_configure_filter,
.bss_info_changed = mt76x0_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 = mt76x0_sw_scan,
.sw_scan_complete = mt76x0_sw_scan_complete,
.ampdu_action = mt76x02_ampdu_action,
.sta_rate_tbl_update = mt76_sta_rate_tbl_update,
.set_rts_threshold = mt76x0_set_rts_threshold,
};
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