1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/etherdevice.h> 5 #include <linux/firmware.h> 6 #include "mt7921.h" 7 #include "../mt76_connac2_mac.h" 8 #include "mcu.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 const struct ieee80211_iface_limit if_limits_chanctx[] = { 32 { 33 .max = 2, 34 .types = BIT(NL80211_IFTYPE_STATION) | 35 BIT(NL80211_IFTYPE_P2P_CLIENT) 36 }, 37 { 38 .max = 1, 39 .types = BIT(NL80211_IFTYPE_AP) | 40 BIT(NL80211_IFTYPE_P2P_GO) 41 } 42 }; 43 44 static const struct ieee80211_iface_combination if_comb_chanctx[] = { 45 { 46 .limits = if_limits_chanctx, 47 .n_limits = ARRAY_SIZE(if_limits_chanctx), 48 .max_interfaces = 2, 49 .num_different_channels = 2, 50 .beacon_int_infra_match = false, 51 } 52 }; 53 54 static void 55 mt7921_regd_notifier(struct wiphy *wiphy, 56 struct regulatory_request *request) 57 { 58 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 59 struct mt7921_dev *dev = mt7921_hw_dev(hw); 60 61 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 62 dev->mt76.region = request->dfs_region; 63 dev->country_ie_env = request->country_ie_env; 64 65 mt7921_mutex_acquire(dev); 66 mt7921_mcu_set_clc(dev, request->alpha2, request->country_ie_env); 67 mt76_connac_mcu_set_channel_domain(hw->priv); 68 mt7921_set_tx_sar_pwr(hw, NULL); 69 mt7921_mutex_release(dev); 70 } 71 72 static int 73 mt7921_init_wiphy(struct ieee80211_hw *hw) 74 { 75 struct mt7921_phy *phy = mt7921_hw_phy(hw); 76 struct mt7921_dev *dev = phy->dev; 77 struct wiphy *wiphy = hw->wiphy; 78 79 hw->queues = 4; 80 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE; 81 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE; 82 hw->netdev_features = NETIF_F_RXCSUM; 83 84 hw->radiotap_timestamp.units_pos = 85 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US; 86 87 phy->slottime = 9; 88 89 hw->sta_data_size = sizeof(struct mt7921_sta); 90 hw->vif_data_size = sizeof(struct mt7921_vif); 91 92 if (dev->fw_features & MT7921_FW_CAP_CNM) { 93 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 94 wiphy->iface_combinations = if_comb_chanctx; 95 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_chanctx); 96 } else { 97 wiphy->flags &= ~WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 98 wiphy->iface_combinations = if_comb; 99 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); 100 } 101 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP | 102 WIPHY_FLAG_4ADDR_STATION); 103 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 104 BIT(NL80211_IFTYPE_AP) | 105 BIT(NL80211_IFTYPE_P2P_CLIENT) | 106 BIT(NL80211_IFTYPE_P2P_GO); 107 wiphy->max_remain_on_channel_duration = 5000; 108 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN; 109 wiphy->max_scan_ssids = 4; 110 wiphy->max_sched_scan_plan_interval = 111 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL; 112 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN; 113 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID; 114 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH; 115 wiphy->max_sched_scan_reqs = 1; 116 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 117 wiphy->reg_notifier = mt7921_regd_notifier; 118 119 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 120 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 121 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL); 122 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY); 123 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HT); 124 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT); 125 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE); 126 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT); 127 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 128 129 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 130 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 131 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD); 132 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD); 133 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 134 ieee80211_hw_set(hw, SUPPORTS_PS); 135 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 136 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 137 ieee80211_hw_set(hw, CONNECTION_MONITOR); 138 139 if (dev->pm.enable) 140 ieee80211_hw_set(hw, CONNECTION_MONITOR); 141 142 hw->max_tx_fragments = 4; 143 144 return 0; 145 } 146 147 static void 148 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band) 149 { 150 u32 mask, set; 151 152 mt76_rmw_field(dev, MT_TMAC_CTCR0(band), 153 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f); 154 mt76_set(dev, MT_TMAC_CTCR0(band), 155 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN | 156 MT_TMAC_CTCR0_INS_DDLMT_EN); 157 158 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 159 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 160 161 /* enable MIB tx-rx time reporting */ 162 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN); 163 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN); 164 165 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536); 166 /* disable rx rate report by default due to hw issues */ 167 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN); 168 169 /* filter out non-resp frames and get instantaneous signal reporting */ 170 mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM; 171 set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) | 172 FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3); 173 mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set); 174 } 175 176 static u8 177 mt7921_get_offload_capability(struct device *dev, const char *fw_wm) 178 { 179 const struct mt76_connac2_fw_trailer *hdr; 180 struct mt7921_realease_info *rel_info; 181 const struct firmware *fw; 182 int ret, i, offset = 0; 183 const u8 *data, *end; 184 u8 offload_caps = 0; 185 186 ret = request_firmware(&fw, fw_wm, dev); 187 if (ret) 188 return ret; 189 190 if (!fw || !fw->data || fw->size < sizeof(*hdr)) { 191 dev_err(dev, "Invalid firmware\n"); 192 goto out; 193 } 194 195 data = fw->data; 196 hdr = (const void *)(fw->data + fw->size - sizeof(*hdr)); 197 198 for (i = 0; i < hdr->n_region; i++) { 199 const struct mt76_connac2_fw_region *region; 200 201 region = (const void *)((const u8 *)hdr - 202 (hdr->n_region - i) * sizeof(*region)); 203 offset += le32_to_cpu(region->len); 204 } 205 206 data += offset + 16; 207 rel_info = (struct mt7921_realease_info *)data; 208 data += sizeof(*rel_info); 209 end = data + le16_to_cpu(rel_info->len); 210 211 while (data < end) { 212 rel_info = (struct mt7921_realease_info *)data; 213 data += sizeof(*rel_info); 214 215 if (rel_info->tag == MT7921_FW_TAG_FEATURE) { 216 struct mt7921_fw_features *features; 217 218 features = (struct mt7921_fw_features *)data; 219 offload_caps = features->data; 220 break; 221 } 222 223 data += le16_to_cpu(rel_info->len) + rel_info->pad_len; 224 } 225 226 out: 227 release_firmware(fw); 228 229 return offload_caps; 230 } 231 232 struct ieee80211_ops * 233 mt7921_get_mac80211_ops(struct device *dev, void *drv_data, u8 *fw_features) 234 { 235 struct ieee80211_ops *ops; 236 237 ops = devm_kmemdup(dev, &mt7921_ops, sizeof(mt7921_ops), GFP_KERNEL); 238 if (!ops) 239 return NULL; 240 241 *fw_features = mt7921_get_offload_capability(dev, drv_data); 242 if (!(*fw_features & MT7921_FW_CAP_CNM)) { 243 ops->remain_on_channel = NULL; 244 ops->cancel_remain_on_channel = NULL; 245 ops->add_chanctx = NULL; 246 ops->remove_chanctx = NULL; 247 ops->change_chanctx = NULL; 248 ops->assign_vif_chanctx = NULL; 249 ops->unassign_vif_chanctx = NULL; 250 ops->mgd_prepare_tx = NULL; 251 ops->mgd_complete_tx = NULL; 252 } 253 return ops; 254 } 255 EXPORT_SYMBOL_GPL(mt7921_get_mac80211_ops); 256 257 int mt7921_mac_init(struct mt7921_dev *dev) 258 { 259 int i; 260 261 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 262 /* enable hardware de-agg */ 263 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 264 /* enable hardware rx header translation */ 265 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 266 267 for (i = 0; i < MT7921_WTBL_SIZE; i++) 268 mt7921_mac_wtbl_update(dev, i, 269 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 270 for (i = 0; i < 2; i++) 271 mt7921_mac_init_band(dev, i); 272 273 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 274 } 275 EXPORT_SYMBOL_GPL(mt7921_mac_init); 276 277 static int __mt7921_init_hardware(struct mt7921_dev *dev) 278 { 279 int ret; 280 281 /* force firmware operation mode into normal state, 282 * which should be set before firmware download stage. 283 */ 284 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 285 ret = mt7921_mcu_init(dev); 286 if (ret) 287 goto out; 288 289 mt76_eeprom_override(&dev->mphy); 290 291 ret = mt7921_mcu_set_eeprom(dev); 292 if (ret) 293 goto out; 294 295 ret = mt7921_mac_init(dev); 296 out: 297 return ret; 298 } 299 300 static int mt7921_init_hardware(struct mt7921_dev *dev) 301 { 302 int ret, i; 303 304 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 305 306 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) { 307 ret = __mt7921_init_hardware(dev); 308 if (!ret) 309 break; 310 311 mt7921_init_reset(dev); 312 } 313 314 if (i == MT7921_MCU_INIT_RETRY_COUNT) { 315 dev_err(dev->mt76.dev, "hardware init failed\n"); 316 return ret; 317 } 318 319 return 0; 320 } 321 322 static int mt7921_init_wcid(struct mt7921_dev *dev) 323 { 324 int idx; 325 326 /* Beacon and mgmt frames should occupy wcid 0 */ 327 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1); 328 if (idx) 329 return -ENOSPC; 330 331 dev->mt76.global_wcid.idx = idx; 332 dev->mt76.global_wcid.hw_key_idx = -1; 333 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET; 334 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid); 335 336 return 0; 337 } 338 339 static void mt7921_init_work(struct work_struct *work) 340 { 341 struct mt7921_dev *dev = container_of(work, struct mt7921_dev, 342 init_work); 343 int ret; 344 345 ret = mt7921_init_hardware(dev); 346 if (ret) 347 return; 348 349 mt76_set_stream_caps(&dev->mphy, true); 350 mt7921_set_stream_he_caps(&dev->phy); 351 352 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 353 ARRAY_SIZE(mt76_rates)); 354 if (ret) { 355 dev_err(dev->mt76.dev, "register device failed\n"); 356 return; 357 } 358 359 ret = mt7921_init_debugfs(dev); 360 if (ret) { 361 dev_err(dev->mt76.dev, "register debugfs failed\n"); 362 return; 363 } 364 365 /* we support chip reset now */ 366 dev->hw_init_done = true; 367 368 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 369 } 370 371 int mt7921_register_device(struct mt7921_dev *dev) 372 { 373 struct ieee80211_hw *hw = mt76_hw(dev); 374 int ret; 375 376 dev->phy.dev = dev; 377 dev->phy.mt76 = &dev->mt76.phy; 378 dev->mt76.phy.priv = &dev->phy; 379 dev->mt76.tx_worker.fn = mt7921_tx_worker; 380 381 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work); 382 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work); 383 spin_lock_init(&dev->pm.wake.lock); 384 mutex_init(&dev->pm.mutex); 385 init_waitqueue_head(&dev->pm.wait); 386 if (mt76_is_sdio(&dev->mt76)) 387 init_waitqueue_head(&dev->mt76.sdio.wait); 388 spin_lock_init(&dev->pm.txq_lock); 389 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work); 390 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 391 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 392 #if IS_ENABLED(CONFIG_IPV6) 393 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 394 skb_queue_head_init(&dev->ipv6_ns_list); 395 #endif 396 skb_queue_head_init(&dev->phy.scan_event_list); 397 skb_queue_head_init(&dev->coredump.msg_list); 398 INIT_LIST_HEAD(&dev->sta_poll_list); 399 spin_lock_init(&dev->sta_poll_lock); 400 401 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 402 INIT_WORK(&dev->init_work, mt7921_init_work); 403 404 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work); 405 timer_setup(&dev->phy.roc_timer, mt7921_roc_timer, 0); 406 init_waitqueue_head(&dev->phy.roc_wait); 407 408 dev->pm.idle_timeout = MT7921_PM_TIMEOUT; 409 dev->pm.stats.last_wake_event = jiffies; 410 dev->pm.stats.last_doze_event = jiffies; 411 if (!mt76_is_usb(&dev->mt76)) { 412 dev->pm.enable_user = true; 413 dev->pm.enable = true; 414 dev->pm.ds_enable_user = true; 415 dev->pm.ds_enable = true; 416 } 417 418 if (!mt76_is_mmio(&dev->mt76)) 419 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 420 421 mt7921_init_acpi_sar(dev); 422 423 ret = mt7921_init_wcid(dev); 424 if (ret) 425 return ret; 426 427 ret = mt7921_init_wiphy(hw); 428 if (ret) 429 return ret; 430 431 dev->mphy.sband_2g.sband.ht_cap.cap |= 432 IEEE80211_HT_CAP_LDPC_CODING | 433 IEEE80211_HT_CAP_MAX_AMSDU; 434 dev->mphy.sband_5g.sband.ht_cap.cap |= 435 IEEE80211_HT_CAP_LDPC_CODING | 436 IEEE80211_HT_CAP_MAX_AMSDU; 437 dev->mphy.sband_5g.sband.vht_cap.cap |= 438 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | 439 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 440 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 441 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 442 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 443 if (is_mt7922(&dev->mt76)) 444 dev->mphy.sband_5g.sband.vht_cap.cap |= 445 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 446 IEEE80211_VHT_CAP_SHORT_GI_160; 447 448 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 449 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 450 451 queue_work(system_wq, &dev->init_work); 452 453 return 0; 454 } 455 EXPORT_SYMBOL_GPL(mt7921_register_device); 456