1 // SPDX-License-Identifier: ISC 2 /* Copyright (C) 2020 MediaTek Inc. */ 3 4 #include <linux/etherdevice.h> 5 #include <linux/hwmon.h> 6 #include <linux/hwmon-sysfs.h> 7 #include <linux/thermal.h> 8 #include <linux/firmware.h> 9 #include "mt7921.h" 10 #include "../mt76_connac2_mac.h" 11 #include "mcu.h" 12 13 static const struct ieee80211_iface_limit if_limits[] = { 14 { 15 .max = MT7921_MAX_INTERFACES, 16 .types = BIT(NL80211_IFTYPE_STATION) 17 }, 18 { 19 .max = 1, 20 .types = BIT(NL80211_IFTYPE_AP) 21 } 22 }; 23 24 static const struct ieee80211_iface_combination if_comb[] = { 25 { 26 .limits = if_limits, 27 .n_limits = ARRAY_SIZE(if_limits), 28 .max_interfaces = MT7921_MAX_INTERFACES, 29 .num_different_channels = 1, 30 .beacon_int_infra_match = true, 31 }, 32 }; 33 34 static const struct ieee80211_iface_limit if_limits_chanctx[] = { 35 { 36 .max = 2, 37 .types = BIT(NL80211_IFTYPE_STATION) | 38 BIT(NL80211_IFTYPE_P2P_CLIENT) 39 }, 40 { 41 .max = 1, 42 .types = BIT(NL80211_IFTYPE_AP) | 43 BIT(NL80211_IFTYPE_P2P_GO) 44 } 45 }; 46 47 static const struct ieee80211_iface_combination if_comb_chanctx[] = { 48 { 49 .limits = if_limits_chanctx, 50 .n_limits = ARRAY_SIZE(if_limits_chanctx), 51 .max_interfaces = 2, 52 .num_different_channels = 2, 53 .beacon_int_infra_match = false, 54 } 55 }; 56 57 static ssize_t mt7921_thermal_temp_show(struct device *dev, 58 struct device_attribute *attr, 59 char *buf) 60 { 61 switch (to_sensor_dev_attr(attr)->index) { 62 case 0: { 63 struct mt792x_phy *phy = dev_get_drvdata(dev); 64 struct mt7921_dev *mdev = phy->dev; 65 int temperature; 66 67 mt7921_mutex_acquire(mdev); 68 temperature = mt7921_mcu_get_temperature(phy); 69 mt7921_mutex_release(mdev); 70 71 if (temperature < 0) 72 return temperature; 73 /* display in millidegree Celsius */ 74 return sprintf(buf, "%u\n", temperature * 1000); 75 } 76 default: 77 return -EINVAL; 78 } 79 } 80 static SENSOR_DEVICE_ATTR_RO(temp1_input, mt7921_thermal_temp, 0); 81 82 static struct attribute *mt7921_hwmon_attrs[] = { 83 &sensor_dev_attr_temp1_input.dev_attr.attr, 84 NULL, 85 }; 86 ATTRIBUTE_GROUPS(mt7921_hwmon); 87 88 static int mt7921_thermal_init(struct mt792x_phy *phy) 89 { 90 struct wiphy *wiphy = phy->mt76->hw->wiphy; 91 struct device *hwmon; 92 const char *name; 93 94 if (!IS_REACHABLE(CONFIG_HWMON)) 95 return 0; 96 97 name = devm_kasprintf(&wiphy->dev, GFP_KERNEL, "mt7921_%s", 98 wiphy_name(wiphy)); 99 100 hwmon = devm_hwmon_device_register_with_groups(&wiphy->dev, name, phy, 101 mt7921_hwmon_groups); 102 if (IS_ERR(hwmon)) 103 return PTR_ERR(hwmon); 104 105 return 0; 106 } 107 108 static void 109 mt7921_regd_notifier(struct wiphy *wiphy, 110 struct regulatory_request *request) 111 { 112 struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); 113 struct mt7921_dev *dev = mt7921_hw_dev(hw); 114 115 memcpy(dev->mt76.alpha2, request->alpha2, sizeof(dev->mt76.alpha2)); 116 dev->mt76.region = request->dfs_region; 117 dev->country_ie_env = request->country_ie_env; 118 119 mt7921_mutex_acquire(dev); 120 mt7921_mcu_set_clc(dev, request->alpha2, request->country_ie_env); 121 mt76_connac_mcu_set_channel_domain(hw->priv); 122 mt7921_set_tx_sar_pwr(hw, NULL); 123 mt7921_mutex_release(dev); 124 } 125 126 static int 127 mt7921_init_wiphy(struct ieee80211_hw *hw) 128 { 129 struct mt792x_phy *phy = mt7921_hw_phy(hw); 130 struct mt7921_dev *dev = phy->dev; 131 struct wiphy *wiphy = hw->wiphy; 132 133 hw->queues = 4; 134 hw->max_rx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE; 135 hw->max_tx_aggregation_subframes = IEEE80211_MAX_AMPDU_BUF_HE; 136 hw->netdev_features = NETIF_F_RXCSUM; 137 138 hw->radiotap_timestamp.units_pos = 139 IEEE80211_RADIOTAP_TIMESTAMP_UNIT_US; 140 141 phy->slottime = 9; 142 143 hw->sta_data_size = sizeof(struct mt792x_sta); 144 hw->vif_data_size = sizeof(struct mt792x_vif); 145 146 if (dev->fw_features & MT7921_FW_CAP_CNM) { 147 wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 148 wiphy->iface_combinations = if_comb_chanctx; 149 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb_chanctx); 150 } else { 151 wiphy->flags &= ~WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; 152 wiphy->iface_combinations = if_comb; 153 wiphy->n_iface_combinations = ARRAY_SIZE(if_comb); 154 } 155 wiphy->flags &= ~(WIPHY_FLAG_IBSS_RSN | WIPHY_FLAG_4ADDR_AP | 156 WIPHY_FLAG_4ADDR_STATION); 157 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) | 158 BIT(NL80211_IFTYPE_AP) | 159 BIT(NL80211_IFTYPE_P2P_CLIENT) | 160 BIT(NL80211_IFTYPE_P2P_GO); 161 wiphy->max_remain_on_channel_duration = 5000; 162 wiphy->max_scan_ie_len = MT76_CONNAC_SCAN_IE_LEN; 163 wiphy->max_scan_ssids = 4; 164 wiphy->max_sched_scan_plan_interval = 165 MT76_CONNAC_MAX_TIME_SCHED_SCAN_INTERVAL; 166 wiphy->max_sched_scan_ie_len = IEEE80211_MAX_DATA_LEN; 167 wiphy->max_sched_scan_ssids = MT76_CONNAC_MAX_SCHED_SCAN_SSID; 168 wiphy->max_match_sets = MT76_CONNAC_MAX_SCAN_MATCH; 169 wiphy->max_sched_scan_reqs = 1; 170 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH | 171 WIPHY_FLAG_SPLIT_SCAN_6GHZ; 172 wiphy->reg_notifier = mt7921_regd_notifier; 173 174 wiphy->features |= NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR | 175 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 176 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_SET_SCAN_DWELL); 177 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_LEGACY); 178 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HT); 179 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_VHT); 180 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_BEACON_RATE_HE); 181 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT); 182 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0); 183 184 ieee80211_hw_set(hw, SINGLE_SCAN_ON_ALL_BANDS); 185 ieee80211_hw_set(hw, HAS_RATE_CONTROL); 186 ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD); 187 ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD); 188 ieee80211_hw_set(hw, WANT_MONITOR_VIF); 189 ieee80211_hw_set(hw, SUPPORTS_PS); 190 ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS); 191 ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW); 192 ieee80211_hw_set(hw, CONNECTION_MONITOR); 193 194 if (dev->pm.enable) 195 ieee80211_hw_set(hw, CONNECTION_MONITOR); 196 197 hw->max_tx_fragments = 4; 198 199 return 0; 200 } 201 202 static void 203 mt7921_mac_init_band(struct mt7921_dev *dev, u8 band) 204 { 205 u32 mask, set; 206 207 mt76_rmw_field(dev, MT_TMAC_CTCR0(band), 208 MT_TMAC_CTCR0_INS_DDLMT_REFTIME, 0x3f); 209 mt76_set(dev, MT_TMAC_CTCR0(band), 210 MT_TMAC_CTCR0_INS_DDLMT_VHT_SMPDU_EN | 211 MT_TMAC_CTCR0_INS_DDLMT_EN); 212 213 mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 214 mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN); 215 216 /* enable MIB tx-rx time reporting */ 217 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN); 218 mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN); 219 220 mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536); 221 /* disable rx rate report by default due to hw issues */ 222 mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN); 223 224 /* filter out non-resp frames and get instantaneous signal reporting */ 225 mask = MT_WTBLOFF_TOP_RSCR_RCPI_MODE | MT_WTBLOFF_TOP_RSCR_RCPI_PARAM; 226 set = FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_MODE, 0) | 227 FIELD_PREP(MT_WTBLOFF_TOP_RSCR_RCPI_PARAM, 0x3); 228 mt76_rmw(dev, MT_WTBLOFF_TOP_RSCR(band), mask, set); 229 } 230 231 static u8 232 mt7921_get_offload_capability(struct device *dev, const char *fw_wm) 233 { 234 const struct mt76_connac2_fw_trailer *hdr; 235 struct mt7921_realease_info *rel_info; 236 const struct firmware *fw; 237 int ret, i, offset = 0; 238 const u8 *data, *end; 239 u8 offload_caps = 0; 240 241 ret = request_firmware(&fw, fw_wm, dev); 242 if (ret) 243 return ret; 244 245 if (!fw || !fw->data || fw->size < sizeof(*hdr)) { 246 dev_err(dev, "Invalid firmware\n"); 247 goto out; 248 } 249 250 data = fw->data; 251 hdr = (const void *)(fw->data + fw->size - sizeof(*hdr)); 252 253 for (i = 0; i < hdr->n_region; i++) { 254 const struct mt76_connac2_fw_region *region; 255 256 region = (const void *)((const u8 *)hdr - 257 (hdr->n_region - i) * sizeof(*region)); 258 offset += le32_to_cpu(region->len); 259 } 260 261 data += offset + 16; 262 rel_info = (struct mt7921_realease_info *)data; 263 data += sizeof(*rel_info); 264 end = data + le16_to_cpu(rel_info->len); 265 266 while (data < end) { 267 rel_info = (struct mt7921_realease_info *)data; 268 data += sizeof(*rel_info); 269 270 if (rel_info->tag == MT7921_FW_TAG_FEATURE) { 271 struct mt7921_fw_features *features; 272 273 features = (struct mt7921_fw_features *)data; 274 offload_caps = features->data; 275 break; 276 } 277 278 data += le16_to_cpu(rel_info->len) + rel_info->pad_len; 279 } 280 281 out: 282 release_firmware(fw); 283 284 return offload_caps; 285 } 286 287 struct ieee80211_ops * 288 mt7921_get_mac80211_ops(struct device *dev, void *drv_data, u8 *fw_features) 289 { 290 struct ieee80211_ops *ops; 291 292 ops = devm_kmemdup(dev, &mt7921_ops, sizeof(mt7921_ops), GFP_KERNEL); 293 if (!ops) 294 return NULL; 295 296 *fw_features = mt7921_get_offload_capability(dev, drv_data); 297 if (!(*fw_features & MT7921_FW_CAP_CNM)) { 298 ops->remain_on_channel = NULL; 299 ops->cancel_remain_on_channel = NULL; 300 ops->add_chanctx = NULL; 301 ops->remove_chanctx = NULL; 302 ops->change_chanctx = NULL; 303 ops->assign_vif_chanctx = NULL; 304 ops->unassign_vif_chanctx = NULL; 305 ops->mgd_prepare_tx = NULL; 306 ops->mgd_complete_tx = NULL; 307 } 308 return ops; 309 } 310 EXPORT_SYMBOL_GPL(mt7921_get_mac80211_ops); 311 312 int mt7921_mac_init(struct mt7921_dev *dev) 313 { 314 int i; 315 316 mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536); 317 /* enable hardware de-agg */ 318 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN); 319 /* enable hardware rx header translation */ 320 mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_RX_HDR_TRANS_EN); 321 322 for (i = 0; i < MT7921_WTBL_SIZE; i++) 323 mt7921_mac_wtbl_update(dev, i, 324 MT_WTBL_UPDATE_ADM_COUNT_CLEAR); 325 for (i = 0; i < 2; i++) 326 mt7921_mac_init_band(dev, i); 327 328 return mt76_connac_mcu_set_rts_thresh(&dev->mt76, 0x92b, 0); 329 } 330 EXPORT_SYMBOL_GPL(mt7921_mac_init); 331 332 static int __mt7921_init_hardware(struct mt7921_dev *dev) 333 { 334 int ret; 335 336 /* force firmware operation mode into normal state, 337 * which should be set before firmware download stage. 338 */ 339 mt76_wr(dev, MT_SWDEF_MODE, MT_SWDEF_NORMAL_MODE); 340 ret = mt7921_mcu_init(dev); 341 if (ret) 342 goto out; 343 344 mt76_eeprom_override(&dev->mphy); 345 346 ret = mt7921_mcu_set_eeprom(dev); 347 if (ret) 348 goto out; 349 350 ret = mt7921_mac_init(dev); 351 out: 352 return ret; 353 } 354 355 static int mt7921_init_hardware(struct mt7921_dev *dev) 356 { 357 int ret, i; 358 359 set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); 360 361 for (i = 0; i < MT7921_MCU_INIT_RETRY_COUNT; i++) { 362 ret = __mt7921_init_hardware(dev); 363 if (!ret) 364 break; 365 366 mt7921_init_reset(dev); 367 } 368 369 if (i == MT7921_MCU_INIT_RETRY_COUNT) { 370 dev_err(dev->mt76.dev, "hardware init failed\n"); 371 return ret; 372 } 373 374 return 0; 375 } 376 377 static int mt7921_init_wcid(struct mt7921_dev *dev) 378 { 379 int idx; 380 381 /* Beacon and mgmt frames should occupy wcid 0 */ 382 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7921_WTBL_STA - 1); 383 if (idx) 384 return -ENOSPC; 385 386 dev->mt76.global_wcid.idx = idx; 387 dev->mt76.global_wcid.hw_key_idx = -1; 388 dev->mt76.global_wcid.tx_info |= MT_WCID_TX_INFO_SET; 389 rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid); 390 391 return 0; 392 } 393 394 static void mt7921_init_work(struct work_struct *work) 395 { 396 struct mt7921_dev *dev = container_of(work, struct mt7921_dev, 397 init_work); 398 int ret; 399 400 ret = mt7921_init_hardware(dev); 401 if (ret) 402 return; 403 404 mt76_set_stream_caps(&dev->mphy, true); 405 mt7921_set_stream_he_caps(&dev->phy); 406 407 ret = mt76_register_device(&dev->mt76, true, mt76_rates, 408 ARRAY_SIZE(mt76_rates)); 409 if (ret) { 410 dev_err(dev->mt76.dev, "register device failed\n"); 411 return; 412 } 413 414 ret = mt7921_init_debugfs(dev); 415 if (ret) { 416 dev_err(dev->mt76.dev, "register debugfs failed\n"); 417 return; 418 } 419 420 ret = mt7921_thermal_init(&dev->phy); 421 if (ret) { 422 dev_err(dev->mt76.dev, "thermal init failed\n"); 423 return; 424 } 425 426 /* we support chip reset now */ 427 dev->hw_init_done = true; 428 429 mt76_connac_mcu_set_deep_sleep(&dev->mt76, dev->pm.ds_enable); 430 } 431 432 int mt7921_register_device(struct mt7921_dev *dev) 433 { 434 struct ieee80211_hw *hw = mt76_hw(dev); 435 int ret; 436 437 dev->phy.dev = dev; 438 dev->phy.mt76 = &dev->mt76.phy; 439 dev->mt76.phy.priv = &dev->phy; 440 dev->mt76.tx_worker.fn = mt7921_tx_worker; 441 442 INIT_DELAYED_WORK(&dev->pm.ps_work, mt7921_pm_power_save_work); 443 INIT_WORK(&dev->pm.wake_work, mt7921_pm_wake_work); 444 spin_lock_init(&dev->pm.wake.lock); 445 mutex_init(&dev->pm.mutex); 446 init_waitqueue_head(&dev->pm.wait); 447 if (mt76_is_sdio(&dev->mt76)) 448 init_waitqueue_head(&dev->mt76.sdio.wait); 449 spin_lock_init(&dev->pm.txq_lock); 450 INIT_DELAYED_WORK(&dev->mphy.mac_work, mt7921_mac_work); 451 INIT_DELAYED_WORK(&dev->phy.scan_work, mt7921_scan_work); 452 INIT_DELAYED_WORK(&dev->coredump.work, mt7921_coredump_work); 453 #if IS_ENABLED(CONFIG_IPV6) 454 INIT_WORK(&dev->ipv6_ns_work, mt7921_set_ipv6_ns_work); 455 skb_queue_head_init(&dev->ipv6_ns_list); 456 #endif 457 skb_queue_head_init(&dev->phy.scan_event_list); 458 skb_queue_head_init(&dev->coredump.msg_list); 459 460 INIT_WORK(&dev->reset_work, mt7921_mac_reset_work); 461 INIT_WORK(&dev->init_work, mt7921_init_work); 462 463 INIT_WORK(&dev->phy.roc_work, mt7921_roc_work); 464 timer_setup(&dev->phy.roc_timer, mt7921_roc_timer, 0); 465 init_waitqueue_head(&dev->phy.roc_wait); 466 467 dev->pm.idle_timeout = MT7921_PM_TIMEOUT; 468 dev->pm.stats.last_wake_event = jiffies; 469 dev->pm.stats.last_doze_event = jiffies; 470 if (!mt76_is_usb(&dev->mt76)) { 471 dev->pm.enable_user = true; 472 dev->pm.enable = true; 473 dev->pm.ds_enable_user = true; 474 dev->pm.ds_enable = true; 475 } 476 477 if (!mt76_is_mmio(&dev->mt76)) 478 hw->extra_tx_headroom += MT_SDIO_TXD_SIZE + MT_SDIO_HDR_SIZE; 479 480 mt7921_init_acpi_sar(dev); 481 482 ret = mt7921_init_wcid(dev); 483 if (ret) 484 return ret; 485 486 ret = mt7921_init_wiphy(hw); 487 if (ret) 488 return ret; 489 490 dev->mphy.sband_2g.sband.ht_cap.cap |= 491 IEEE80211_HT_CAP_LDPC_CODING | 492 IEEE80211_HT_CAP_MAX_AMSDU; 493 dev->mphy.sband_5g.sband.ht_cap.cap |= 494 IEEE80211_HT_CAP_LDPC_CODING | 495 IEEE80211_HT_CAP_MAX_AMSDU; 496 dev->mphy.sband_5g.sband.vht_cap.cap |= 497 IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 | 498 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK | 499 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE | 500 IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE | 501 (3 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT); 502 if (is_mt7922(&dev->mt76)) 503 dev->mphy.sband_5g.sband.vht_cap.cap |= 504 IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ | 505 IEEE80211_VHT_CAP_SHORT_GI_160; 506 507 dev->mphy.hw->wiphy->available_antennas_rx = dev->mphy.chainmask; 508 dev->mphy.hw->wiphy->available_antennas_tx = dev->mphy.chainmask; 509 510 queue_work(system_wq, &dev->init_work); 511 512 return 0; 513 } 514 EXPORT_SYMBOL_GPL(mt7921_register_device); 515