1 /* 2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include "mt76x2.h" 18 19 static int 20 mt76x2_start(struct ieee80211_hw *hw) 21 { 22 struct mt76x02_dev *dev = hw->priv; 23 int ret; 24 25 ret = mt76x2_mac_start(dev); 26 if (ret) 27 return ret; 28 29 ret = mt76x2_phy_start(dev); 30 if (ret) 31 return ret; 32 33 ieee80211_queue_delayed_work(mt76_hw(dev), &dev->mt76.mac_work, 34 MT_MAC_WORK_INTERVAL); 35 ieee80211_queue_delayed_work(mt76_hw(dev), &dev->wdt_work, 36 MT_WATCHDOG_TIME); 37 38 set_bit(MT76_STATE_RUNNING, &dev->mt76.state); 39 return 0; 40 } 41 42 static void 43 mt76x2_stop(struct ieee80211_hw *hw) 44 { 45 struct mt76x02_dev *dev = hw->priv; 46 47 clear_bit(MT76_STATE_RUNNING, &dev->mt76.state); 48 mt76x2_stop_hardware(dev); 49 } 50 51 static int 52 mt76x2_set_channel(struct mt76x02_dev *dev, struct cfg80211_chan_def *chandef) 53 { 54 int ret; 55 56 cancel_delayed_work_sync(&dev->cal_work); 57 tasklet_disable(&dev->mt76.pre_tbtt_tasklet); 58 tasklet_disable(&dev->dfs_pd.dfs_tasklet); 59 60 mutex_lock(&dev->mt76.mutex); 61 set_bit(MT76_RESET, &dev->mt76.state); 62 63 mt76_set_channel(&dev->mt76); 64 65 mt76x2_mac_stop(dev, true); 66 ret = mt76x2_phy_set_channel(dev, chandef); 67 68 /* channel cycle counters read-and-clear */ 69 mt76_rr(dev, MT_CH_IDLE); 70 mt76_rr(dev, MT_CH_BUSY); 71 72 mt76x02_dfs_init_params(dev); 73 74 mt76x2_mac_resume(dev); 75 76 clear_bit(MT76_RESET, &dev->mt76.state); 77 mutex_unlock(&dev->mt76.mutex); 78 79 tasklet_enable(&dev->dfs_pd.dfs_tasklet); 80 tasklet_enable(&dev->mt76.pre_tbtt_tasklet); 81 82 mt76_txq_schedule_all(&dev->mt76); 83 84 return ret; 85 } 86 87 static int 88 mt76x2_config(struct ieee80211_hw *hw, u32 changed) 89 { 90 struct mt76x02_dev *dev = hw->priv; 91 int ret = 0; 92 93 mutex_lock(&dev->mt76.mutex); 94 95 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 96 if (!(hw->conf.flags & IEEE80211_CONF_MONITOR)) 97 dev->mt76.rxfilter |= MT_RX_FILTR_CFG_PROMISC; 98 else 99 dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_PROMISC; 100 101 mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter); 102 } 103 104 if (changed & IEEE80211_CONF_CHANGE_POWER) { 105 dev->mt76.txpower_conf = hw->conf.power_level * 2; 106 107 /* convert to per-chain power for 2x2 devices */ 108 dev->mt76.txpower_conf -= 6; 109 110 if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) { 111 mt76x2_phy_set_txpower(dev); 112 mt76x02_tx_set_txpwr_auto(dev, dev->mt76.txpower_conf); 113 } 114 } 115 116 mutex_unlock(&dev->mt76.mutex); 117 118 if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { 119 ieee80211_stop_queues(hw); 120 ret = mt76x2_set_channel(dev, &hw->conf.chandef); 121 ieee80211_wake_queues(hw); 122 } 123 124 return ret; 125 } 126 127 static void 128 mt76x2_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 129 u32 queues, bool drop) 130 { 131 } 132 133 static int mt76x2_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, 134 u32 rx_ant) 135 { 136 struct mt76x02_dev *dev = hw->priv; 137 138 if (!tx_ant || tx_ant > 3 || tx_ant != rx_ant) 139 return -EINVAL; 140 141 mutex_lock(&dev->mt76.mutex); 142 143 dev->mt76.chainmask = (tx_ant == 3) ? 0x202 : 0x101; 144 dev->mt76.antenna_mask = tx_ant; 145 146 mt76_set_stream_caps(&dev->mt76, true); 147 mt76x2_phy_set_antenna(dev); 148 149 mutex_unlock(&dev->mt76.mutex); 150 151 return 0; 152 } 153 154 static int mt76x2_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, 155 u32 *rx_ant) 156 { 157 struct mt76x02_dev *dev = hw->priv; 158 159 mutex_lock(&dev->mt76.mutex); 160 *tx_ant = dev->mt76.antenna_mask; 161 *rx_ant = dev->mt76.antenna_mask; 162 mutex_unlock(&dev->mt76.mutex); 163 164 return 0; 165 } 166 167 const struct ieee80211_ops mt76x2_ops = { 168 .tx = mt76x02_tx, 169 .start = mt76x2_start, 170 .stop = mt76x2_stop, 171 .add_interface = mt76x02_add_interface, 172 .remove_interface = mt76x02_remove_interface, 173 .config = mt76x2_config, 174 .configure_filter = mt76x02_configure_filter, 175 .bss_info_changed = mt76x02_bss_info_changed, 176 .sta_state = mt76_sta_state, 177 .set_key = mt76x02_set_key, 178 .conf_tx = mt76x02_conf_tx, 179 .sw_scan_start = mt76x02_sw_scan, 180 .sw_scan_complete = mt76x02_sw_scan_complete, 181 .flush = mt76x2_flush, 182 .ampdu_action = mt76x02_ampdu_action, 183 .get_txpower = mt76_get_txpower, 184 .wake_tx_queue = mt76_wake_tx_queue, 185 .sta_rate_tbl_update = mt76x02_sta_rate_tbl_update, 186 .release_buffered_frames = mt76_release_buffered_frames, 187 .set_coverage_class = mt76x02_set_coverage_class, 188 .get_survey = mt76_get_survey, 189 .set_tim = mt76_set_tim, 190 .set_antenna = mt76x2_set_antenna, 191 .get_antenna = mt76x2_get_antenna, 192 .set_rts_threshold = mt76x02_set_rts_threshold, 193 }; 194 195