1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/etherdevice.h> 5 #include "mt7921.h" 6 #include "mac.h" 7 #include "mcu.h" 8 #include "eeprom.h" 9 10 static const struct ieee80211_iface_limit if_limits[] = { 11 { 12 .max = MT7921_MAX_INTERFACES, 13 .types = BIT(NL80211_IFTYPE_STATION) 14 }, 15 { 16 .max = 1, 17 .types = BIT(NL80211_IFTYPE_AP) 18 } 19 }; 20 21 static const struct ieee80211_iface_combination if_comb[] = { 22 { 23 .limits = if_limits, 24 .n_limits = ARRAY_SIZE(if_limits), 25 .max_interfaces = MT7921_MAX_INTERFACES, 26 .num_different_channels = 1, 27 .beacon_int_infra_match = true, 28 } 29 }; 30 31 static void 32 mt7921_regd_notifier(struct wiphy *wiphy, 33 struct regulatory_request *request) 34 { 35 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 36 struct mt7921_dev *dev = mt7921_hw_dev(hw); 37 struct mt7921_phy *phy = mt7921_hw_phy(hw); 38 39 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 40 dev->mt76.region = request->dfs_region; 41 42 mt7921_mutex_acquire(dev); 43 mt76_connac_mcu_set_channel_domain(hw->priv); 44 mt76_connac_mcu_set_rate_txpower(phy->mt76); 45 mt7921_mutex_release(dev); 46 } 47 48 static int 49 mt7921_init_wiphy(struct ieee80211_hw *hw) 50 { 51 struct mt7921_phy *phy = mt7921_hw_phy(hw); 52 struct mt7921_dev *dev = phy->dev; 53 struct wiphy *wiphy = hw->wiphy; 54 55 hw->queues = 4; 56 hw->max_rx_aggregation_subframes = 64; 57 hw->max_tx_aggregation_subframes = 128; 58 hw->netdev_features = NETIF_F_RXCSUM; 59 60 hw->radiotap_timestamp.units_pos = 61 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US; 62 63 phy->slottime = 9; 64 65 hw->sta_data_size = sizeof(struct mt7921_sta); 66 hw->vif_data_size = sizeof(struct mt7921_vif); 67 68 wiphy->iface_combinations = if_comb; 69 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP | 70 WIPHY_FLAG_4ADDR_STATION); 71 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 72 BIT(NL80211_IFTYPE_AP); 73 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); 74 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN; 75 wiphy->max_scan_ssids = 4; 76 wiphy->max_sched_scan_plan_interval = 77 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL; 78 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN; 79 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID; 80 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH; 81 wiphy->max_sched_scan_reqs = 1; 82 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 83 wiphy->reg_notifier = mt7921_regd_notifier; 84 85 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 86 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 87 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL); 88 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY); 89 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HT); 90 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT); 91 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE); 92 93 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 94 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 95 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD); 96 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD); 97 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 98 ieee80211_hw_set(hw, SUPPORTS_PS); 99 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 100 101 if (dev->pm.enable) 102 ieee80211_hw_set(hw, CONNECTION_MONITOR); 103 104 hw->max_tx_fragments = 4; 105 106 return 0; 107 } 108 109 static void 110 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band) 111 { 112 mt76_rmw_field(dev, MT_TMAC_CTCR0(band), 113 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f); 114 mt76_set(dev, MT_TMAC_CTCR0(band), 115 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN | 116 MT_TMAC_CTCR0_INS_DDLMT_EN); 117 118 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 119 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 120 121 /* enable MIB tx-rx time reporting */ 122 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN); 123 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN); 124 125 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536); 126 /* disable rx rate report by default due to hw issues */ 127 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN); 128 } 129 130 int mt7921_mac_init(struct mt7921_dev *dev) 131 { 132 int i; 133 134 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 135 /* enable hardware de-agg */ 136 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 137 /* enable hardware rx header translation */ 138 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 139 140 for (i = 0; i < MT7921_WTBL_SIZE; i++) 141 mt7921_mac_wtbl_update(dev, i, 142 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 143 for (i = 0; i < 2; i++) 144 mt7921_mac_init_band(dev, i); 145 146 dev->mt76.rxfilter = mt76_rr(dev, MT_WF_RFCR(0)); 147 148 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 149 } 150 EXPORT_SYMBOL_GPL(mt7921_mac_init); 151 152 static int __mt7921_init_hardware(struct mt7921_dev *dev) 153 { 154 int ret; 155 156 /* force firmware operation mode into normal state, 157 * which should be set before firmware download stage. 158 */ 159 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 160 ret = mt7921_mcu_init(dev); 161 if (ret) 162 goto out; 163 164 mt76_eeprom_override(&dev->mphy); 165 166 ret = mt7921_mcu_set_eeprom(dev); 167 if (ret) 168 goto out; 169 170 ret = mt7921_mac_init(dev); 171 out: 172 return ret; 173 } 174 175 static int mt7921_init_hardware(struct mt7921_dev *dev) 176 { 177 int ret, i; 178 179 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 180 181 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) { 182 ret = __mt7921_init_hardware(dev); 183 if (!ret) 184 break; 185 186 mt7921_init_reset(dev); 187 } 188 189 if (i == MT7921_MCU_INIT_RETRY_COUNT) { 190 dev_err(dev->mt76.dev, "hardware init failed\n"); 191 return ret; 192 } 193 194 return 0; 195 } 196 197 static int mt7921_init_wcid(struct mt7921_dev *dev) 198 { 199 int idx; 200 201 /* Beacon and mgmt frames should occupy wcid 0 */ 202 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1); 203 if (idx) 204 return -ENOSPC; 205 206 dev->mt76.global_wcid.idx = idx; 207 dev->mt76.global_wcid.hw_key_idx = -1; 208 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET; 209 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid); 210 211 return 0; 212 } 213 214 static void mt7921_init_work(struct work_struct *work) 215 { 216 struct mt7921_dev *dev = container_of(work, struct mt7921_dev, 217 init_work); 218 int ret; 219 220 ret = mt7921_init_hardware(dev); 221 if (ret) 222 return; 223 224 mt76_set_stream_caps(&dev->mphy, true); 225 mt7921_set_stream_he_caps(&dev->phy); 226 227 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 228 ARRAY_SIZE(mt76_rates)); 229 if (ret) { 230 dev_err(dev->mt76.dev, "register device failed\n"); 231 return; 232 } 233 234 ret = mt7921_init_debugfs(dev); 235 if (ret) { 236 dev_err(dev->mt76.dev, "register debugfs failed\n"); 237 return; 238 } 239 240 /* we support chip reset now */ 241 dev->hw_init_done = true; 242 243 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 244 } 245 246 int mt7921_register_device(struct mt7921_dev *dev) 247 { 248 struct ieee80211_hw *hw = mt76_hw(dev); 249 int ret; 250 251 dev->phy.dev = dev; 252 dev->phy.mt76 = &dev->mt76.phy; 253 dev->mt76.phy.priv = &dev->phy; 254 dev->mt76.tx_worker.fn = mt7921_tx_worker; 255 256 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work); 257 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work); 258 spin_lock_init(&dev->pm.wake.lock); 259 mutex_init(&dev->pm.mutex); 260 init_waitqueue_head(&dev->pm.wait); 261 if (mt76_is_sdio(&dev->mt76)) 262 init_waitqueue_head(&dev->mt76.sdio.wait); 263 spin_lock_init(&dev->pm.txq_lock); 264 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work); 265 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 266 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 267 #if IS_ENABLED(CONFIG_IPV6) 268 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 269 skb_queue_head_init(&dev->ipv6_ns_list); 270 #endif 271 skb_queue_head_init(&dev->phy.scan_event_list); 272 skb_queue_head_init(&dev->coredump.msg_list); 273 INIT_LIST_HEAD(&dev->sta_poll_list); 274 spin_lock_init(&dev->sta_poll_lock); 275 276 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 277 INIT_WORK(&dev->init_work, mt7921_init_work); 278 279 dev->pm.idle_timeout = MT7921_PM_TIMEOUT; 280 dev->pm.stats.last_wake_event = jiffies; 281 dev->pm.stats.last_doze_event = jiffies; 282 if (!mt76_is_usb(&dev->mt76)) { 283 dev->pm.enable_user = true; 284 dev->pm.enable = true; 285 dev->pm.ds_enable_user = true; 286 dev->pm.ds_enable = true; 287 } 288 289 if (!mt76_is_mmio(&dev->mt76)) 290 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 291 292 ret = mt7921_init_wcid(dev); 293 if (ret) 294 return ret; 295 296 ret = mt7921_init_wiphy(hw); 297 if (ret) 298 return ret; 299 300 dev->mphy.sband_2g.sband.ht_cap.cap |= 301 IEEE80211_HT_CAP_LDPC_CODING | 302 IEEE80211_HT_CAP_MAX_AMSDU; 303 dev->mphy.sband_5g.sband.ht_cap.cap |= 304 IEEE80211_HT_CAP_LDPC_CODING | 305 IEEE80211_HT_CAP_MAX_AMSDU; 306 dev->mphy.sband_5g.sband.vht_cap.cap |= 307 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 | 308 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 309 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 310 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 311 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 312 if (is_mt7922(&dev->mt76)) 313 dev->mphy.sband_5g.sband.vht_cap.cap |= 314 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 315 IEEE80211_VHT_CAP_SHORT_GI_160; 316 317 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 318 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 319 320 queue_work(system_wq, &dev->init_work); 321 322 return 0; 323 } 324 EXPORT_SYMBOL_GPL(mt7921_register_device); 325