1 /* 2 * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl> 3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> 4 * 5 * Permission to use, copy, modify, and/or distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include <linux/module.h> 19 #include "mt76x02.h" 20 21 #define CCK_RATE(_idx, _rate) { \ 22 .bitrate = _rate, \ 23 .flags = IEEE80211_RATE_SHORT_PREAMBLE, \ 24 .hw_value = (MT_PHY_TYPE_CCK << 8) | _idx, \ 25 .hw_value_short = (MT_PHY_TYPE_CCK << 8) | (8 + _idx), \ 26 } 27 28 #define OFDM_RATE(_idx, _rate) { \ 29 .bitrate = _rate, \ 30 .hw_value = (MT_PHY_TYPE_OFDM << 8) | _idx, \ 31 .hw_value_short = (MT_PHY_TYPE_OFDM << 8) | _idx, \ 32 } 33 34 struct ieee80211_rate mt76x02_rates[] = { 35 CCK_RATE(0, 10), 36 CCK_RATE(1, 20), 37 CCK_RATE(2, 55), 38 CCK_RATE(3, 110), 39 OFDM_RATE(0, 60), 40 OFDM_RATE(1, 90), 41 OFDM_RATE(2, 120), 42 OFDM_RATE(3, 180), 43 OFDM_RATE(4, 240), 44 OFDM_RATE(5, 360), 45 OFDM_RATE(6, 480), 46 OFDM_RATE(7, 540), 47 }; 48 EXPORT_SYMBOL_GPL(mt76x02_rates); 49 50 static const struct ieee80211_iface_limit mt76x02_if_limits[] = { 51 { 52 .max = 1, 53 .types = BIT(NL80211_IFTYPE_ADHOC) 54 }, { 55 .max = 8, 56 .types = BIT(NL80211_IFTYPE_STATION) | 57 #ifdef CONFIG_MAC80211_MESH 58 BIT(NL80211_IFTYPE_MESH_POINT) | 59 #endif 60 BIT(NL80211_IFTYPE_AP) 61 }, 62 }; 63 64 static const struct ieee80211_iface_combination mt76x02_if_comb[] = { 65 { 66 .limits = mt76x02_if_limits, 67 .n_limits = ARRAY_SIZE(mt76x02_if_limits), 68 .max_interfaces = 8, 69 .num_different_channels = 1, 70 .beacon_int_infra_match = true, 71 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) | 72 BIT(NL80211_CHAN_WIDTH_20) | 73 BIT(NL80211_CHAN_WIDTH_40) | 74 BIT(NL80211_CHAN_WIDTH_80), 75 } 76 }; 77 78 static void 79 mt76x02_led_set_config(struct mt76_dev *mdev, u8 delay_on, 80 u8 delay_off) 81 { 82 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, 83 mt76); 84 u32 val; 85 86 val = MT_LED_STATUS_DURATION(0xff) | 87 MT_LED_STATUS_OFF(delay_off) | 88 MT_LED_STATUS_ON(delay_on); 89 90 mt76_wr(dev, MT_LED_S0(mdev->led_pin), val); 91 mt76_wr(dev, MT_LED_S1(mdev->led_pin), val); 92 93 val = MT_LED_CTRL_REPLAY(mdev->led_pin) | 94 MT_LED_CTRL_KICK(mdev->led_pin); 95 if (mdev->led_al) 96 val |= MT_LED_CTRL_POLARITY(mdev->led_pin); 97 mt76_wr(dev, MT_LED_CTRL, val); 98 } 99 100 static int 101 mt76x02_led_set_blink(struct led_classdev *led_cdev, 102 unsigned long *delay_on, 103 unsigned long *delay_off) 104 { 105 struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev, 106 led_cdev); 107 u8 delta_on, delta_off; 108 109 delta_off = max_t(u8, *delay_off / 10, 1); 110 delta_on = max_t(u8, *delay_on / 10, 1); 111 112 mt76x02_led_set_config(mdev, delta_on, delta_off); 113 114 return 0; 115 } 116 117 static void 118 mt76x02_led_set_brightness(struct led_classdev *led_cdev, 119 enum led_brightness brightness) 120 { 121 struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev, 122 led_cdev); 123 124 if (!brightness) 125 mt76x02_led_set_config(mdev, 0, 0xff); 126 else 127 mt76x02_led_set_config(mdev, 0xff, 0); 128 } 129 130 void mt76x02_init_device(struct mt76x02_dev *dev) 131 { 132 struct ieee80211_hw *hw = mt76_hw(dev); 133 struct wiphy *wiphy = hw->wiphy; 134 135 INIT_DELAYED_WORK(&dev->mac_work, mt76x02_mac_work); 136 137 hw->queues = 4; 138 hw->max_rates = 1; 139 hw->max_report_rates = 7; 140 hw->max_rate_tries = 1; 141 hw->extra_tx_headroom = 2; 142 143 if (mt76_is_usb(dev)) { 144 hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) + 145 MT_DMA_HDR_LEN; 146 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); 147 } else { 148 INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work); 149 150 mt76x02_dfs_init_detector(dev); 151 152 wiphy->reg_notifier = mt76x02_regd_notifier; 153 wiphy->iface_combinations = mt76x02_if_comb; 154 wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb); 155 wiphy->interface_modes = 156 BIT(NL80211_IFTYPE_STATION) | 157 BIT(NL80211_IFTYPE_AP) | 158 #ifdef CONFIG_MAC80211_MESH 159 BIT(NL80211_IFTYPE_MESH_POINT) | 160 #endif 161 BIT(NL80211_IFTYPE_ADHOC); 162 163 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH; 164 165 wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS); 166 167 /* init led callbacks */ 168 if (IS_ENABLED(CONFIG_MT76_LEDS)) { 169 dev->mt76.led_cdev.brightness_set = 170 mt76x02_led_set_brightness; 171 dev->mt76.led_cdev.blink_set = mt76x02_led_set_blink; 172 } 173 } 174 175 hw->sta_data_size = sizeof(struct mt76x02_sta); 176 hw->vif_data_size = sizeof(struct mt76x02_vif); 177 178 ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES); 179 ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER); 180 181 dev->mt76.global_wcid.idx = 255; 182 dev->mt76.global_wcid.hw_key_idx = -1; 183 dev->slottime = 9; 184 185 if (is_mt76x2(dev)) { 186 dev->mt76.sband_2g.sband.ht_cap.cap |= 187 IEEE80211_HT_CAP_LDPC_CODING; 188 dev->mt76.sband_5g.sband.ht_cap.cap |= 189 IEEE80211_HT_CAP_LDPC_CODING; 190 dev->mt76.chainmask = 0x202; 191 dev->mt76.antenna_mask = 3; 192 } else { 193 dev->mt76.chainmask = 0x101; 194 dev->mt76.antenna_mask = 1; 195 } 196 } 197 EXPORT_SYMBOL_GPL(mt76x02_init_device); 198 199 void mt76x02_configure_filter(struct ieee80211_hw *hw, 200 unsigned int changed_flags, 201 unsigned int *total_flags, u64 multicast) 202 { 203 struct mt76x02_dev *dev = hw->priv; 204 u32 flags = 0; 205 206 #define MT76_FILTER(_flag, _hw) do { \ 207 flags |= *total_flags & FIF_##_flag; \ 208 dev->mt76.rxfilter &= ~(_hw); \ 209 dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw); \ 210 } while (0) 211 212 mutex_lock(&dev->mt76.mutex); 213 214 dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS; 215 216 MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR); 217 MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR); 218 MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK | 219 MT_RX_FILTR_CFG_CTS | 220 MT_RX_FILTR_CFG_CFEND | 221 MT_RX_FILTR_CFG_CFACK | 222 MT_RX_FILTR_CFG_BA | 223 MT_RX_FILTR_CFG_CTRL_RSV); 224 MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL); 225 226 *total_flags = flags; 227 mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter); 228 229 mutex_unlock(&dev->mt76.mutex); 230 } 231 EXPORT_SYMBOL_GPL(mt76x02_configure_filter); 232 233 int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif, 234 struct ieee80211_sta *sta) 235 { 236 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 237 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv; 238 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv; 239 int idx = 0; 240 241 idx = mt76_wcid_alloc(dev->mt76.wcid_mask, ARRAY_SIZE(dev->mt76.wcid)); 242 if (idx < 0) 243 return -ENOSPC; 244 245 msta->vif = mvif; 246 msta->wcid.sta = 1; 247 msta->wcid.idx = idx; 248 msta->wcid.hw_key_idx = -1; 249 mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr); 250 mt76x02_mac_wcid_set_drop(dev, idx, false); 251 252 if (vif->type == NL80211_IFTYPE_AP) 253 set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags); 254 255 return 0; 256 } 257 EXPORT_SYMBOL_GPL(mt76x02_sta_add); 258 259 void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif, 260 struct ieee80211_sta *sta) 261 { 262 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 263 struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv; 264 int idx = wcid->idx; 265 266 mt76x02_mac_wcid_set_drop(dev, idx, true); 267 mt76x02_mac_wcid_setup(dev, idx, 0, NULL); 268 } 269 EXPORT_SYMBOL_GPL(mt76x02_sta_remove); 270 271 void mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif, 272 unsigned int idx) 273 { 274 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv; 275 struct mt76_txq *mtxq; 276 277 mvif->idx = idx; 278 mvif->group_wcid.idx = MT_VIF_WCID(idx); 279 mvif->group_wcid.hw_key_idx = -1; 280 mtxq = (struct mt76_txq *) vif->txq->drv_priv; 281 mtxq->wcid = &mvif->group_wcid; 282 283 mt76_txq_init(&dev->mt76, vif->txq); 284 } 285 EXPORT_SYMBOL_GPL(mt76x02_vif_init); 286 287 int 288 mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 289 { 290 struct mt76x02_dev *dev = hw->priv; 291 unsigned int idx = 0; 292 293 if (vif->addr[0] & BIT(1)) 294 idx = 1 + (((dev->mt76.macaddr[0] ^ vif->addr[0]) >> 2) & 7); 295 296 /* 297 * Client mode typically only has one configurable BSSID register, 298 * which is used for bssidx=0. This is linked to the MAC address. 299 * Since mac80211 allows changing interface types, and we cannot 300 * force the use of the primary MAC address for a station mode 301 * interface, we need some other way of configuring a per-interface 302 * remote BSSID. 303 * The hardware provides an AP-Client feature, where bssidx 0-7 are 304 * used for AP mode and bssidx 8-15 for client mode. 305 * We shift the station interface bss index by 8 to force the 306 * hardware to recognize the BSSID. 307 * The resulting bssidx mismatch for unicast frames is ignored by hw. 308 */ 309 if (vif->type == NL80211_IFTYPE_STATION) 310 idx += 8; 311 312 mt76x02_vif_init(dev, vif, idx); 313 return 0; 314 } 315 EXPORT_SYMBOL_GPL(mt76x02_add_interface); 316 317 void mt76x02_remove_interface(struct ieee80211_hw *hw, 318 struct ieee80211_vif *vif) 319 { 320 struct mt76x02_dev *dev = hw->priv; 321 322 mt76_txq_remove(&dev->mt76, vif->txq); 323 } 324 EXPORT_SYMBOL_GPL(mt76x02_remove_interface); 325 326 int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 327 struct ieee80211_ampdu_params *params) 328 { 329 enum ieee80211_ampdu_mlme_action action = params->action; 330 struct ieee80211_sta *sta = params->sta; 331 struct mt76x02_dev *dev = hw->priv; 332 struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv; 333 struct ieee80211_txq *txq = sta->txq[params->tid]; 334 u16 tid = params->tid; 335 u16 *ssn = ¶ms->ssn; 336 struct mt76_txq *mtxq; 337 338 if (!txq) 339 return -EINVAL; 340 341 mtxq = (struct mt76_txq *)txq->drv_priv; 342 343 switch (action) { 344 case IEEE80211_AMPDU_RX_START: 345 mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid, 346 *ssn, params->buf_size); 347 mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid)); 348 break; 349 case IEEE80211_AMPDU_RX_STOP: 350 mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid); 351 mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, 352 BIT(16 + tid)); 353 break; 354 case IEEE80211_AMPDU_TX_OPERATIONAL: 355 mtxq->aggr = true; 356 mtxq->send_bar = false; 357 ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn); 358 break; 359 case IEEE80211_AMPDU_TX_STOP_FLUSH: 360 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 361 mtxq->aggr = false; 362 ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn); 363 break; 364 case IEEE80211_AMPDU_TX_START: 365 mtxq->agg_ssn = *ssn << 4; 366 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 367 break; 368 case IEEE80211_AMPDU_TX_STOP_CONT: 369 mtxq->aggr = false; 370 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 371 break; 372 } 373 374 return 0; 375 } 376 EXPORT_SYMBOL_GPL(mt76x02_ampdu_action); 377 378 int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 379 struct ieee80211_vif *vif, struct ieee80211_sta *sta, 380 struct ieee80211_key_conf *key) 381 { 382 struct mt76x02_dev *dev = hw->priv; 383 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv; 384 struct mt76x02_sta *msta; 385 struct mt76_wcid *wcid; 386 int idx = key->keyidx; 387 int ret; 388 389 /* fall back to sw encryption for unsupported ciphers */ 390 switch (key->cipher) { 391 case WLAN_CIPHER_SUITE_WEP40: 392 case WLAN_CIPHER_SUITE_WEP104: 393 case WLAN_CIPHER_SUITE_TKIP: 394 case WLAN_CIPHER_SUITE_CCMP: 395 break; 396 default: 397 return -EOPNOTSUPP; 398 } 399 400 /* 401 * The hardware does not support per-STA RX GTK, fall back 402 * to software mode for these. 403 */ 404 if ((vif->type == NL80211_IFTYPE_ADHOC || 405 vif->type == NL80211_IFTYPE_MESH_POINT) && 406 (key->cipher == WLAN_CIPHER_SUITE_TKIP || 407 key->cipher == WLAN_CIPHER_SUITE_CCMP) && 408 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) 409 return -EOPNOTSUPP; 410 411 msta = sta ? (struct mt76x02_sta *) sta->drv_priv : NULL; 412 wcid = msta ? &msta->wcid : &mvif->group_wcid; 413 414 if (cmd == SET_KEY) { 415 key->hw_key_idx = wcid->idx; 416 wcid->hw_key_idx = idx; 417 if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) { 418 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; 419 wcid->sw_iv = true; 420 } 421 } else { 422 if (idx == wcid->hw_key_idx) { 423 wcid->hw_key_idx = -1; 424 wcid->sw_iv = true; 425 } 426 427 key = NULL; 428 } 429 mt76_wcid_key_setup(&dev->mt76, wcid, key); 430 431 if (!msta) { 432 if (key || wcid->hw_key_idx == idx) { 433 ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key); 434 if (ret) 435 return ret; 436 } 437 438 return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key); 439 } 440 441 return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key); 442 } 443 EXPORT_SYMBOL_GPL(mt76x02_set_key); 444 445 int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 446 u16 queue, const struct ieee80211_tx_queue_params *params) 447 { 448 struct mt76x02_dev *dev = hw->priv; 449 u8 cw_min = 5, cw_max = 10, qid; 450 u32 val; 451 452 qid = dev->mt76.q_tx[queue].hw_idx; 453 454 if (params->cw_min) 455 cw_min = fls(params->cw_min); 456 if (params->cw_max) 457 cw_max = fls(params->cw_max); 458 459 val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) | 460 FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) | 461 FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) | 462 FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max); 463 mt76_wr(dev, MT_EDCA_CFG_AC(qid), val); 464 465 val = mt76_rr(dev, MT_WMM_TXOP(qid)); 466 val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid)); 467 val |= params->txop << MT_WMM_TXOP_SHIFT(qid); 468 mt76_wr(dev, MT_WMM_TXOP(qid), val); 469 470 val = mt76_rr(dev, MT_WMM_AIFSN); 471 val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid)); 472 val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid); 473 mt76_wr(dev, MT_WMM_AIFSN, val); 474 475 val = mt76_rr(dev, MT_WMM_CWMIN); 476 val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid)); 477 val |= cw_min << MT_WMM_CWMIN_SHIFT(qid); 478 mt76_wr(dev, MT_WMM_CWMIN, val); 479 480 val = mt76_rr(dev, MT_WMM_CWMAX); 481 val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid)); 482 val |= cw_max << MT_WMM_CWMAX_SHIFT(qid); 483 mt76_wr(dev, MT_WMM_CWMAX, val); 484 485 return 0; 486 } 487 EXPORT_SYMBOL_GPL(mt76x02_conf_tx); 488 489 void mt76x02_set_tx_ackto(struct mt76x02_dev *dev) 490 { 491 u8 ackto, sifs, slottime = dev->slottime; 492 493 /* As defined by IEEE 802.11-2007 17.3.8.6 */ 494 slottime += 3 * dev->coverage_class; 495 mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG, 496 MT_BKOFF_SLOT_CFG_SLOTTIME, slottime); 497 498 sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG, 499 MT_XIFS_TIME_CFG_OFDM_SIFS); 500 501 ackto = slottime + sifs; 502 mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG, 503 MT_TX_TIMEOUT_CFG_ACKTO, ackto); 504 } 505 EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto); 506 507 void mt76x02_set_coverage_class(struct ieee80211_hw *hw, 508 s16 coverage_class) 509 { 510 struct mt76x02_dev *dev = hw->priv; 511 512 mutex_lock(&dev->mt76.mutex); 513 dev->coverage_class = coverage_class; 514 mt76x02_set_tx_ackto(dev); 515 mutex_unlock(&dev->mt76.mutex); 516 } 517 EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class); 518 519 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val) 520 { 521 struct mt76x02_dev *dev = hw->priv; 522 523 if (val != ~0 && val > 0xffff) 524 return -EINVAL; 525 526 mutex_lock(&dev->mt76.mutex); 527 mt76x02_mac_set_rts_thresh(dev, val); 528 mutex_unlock(&dev->mt76.mutex); 529 530 return 0; 531 } 532 EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold); 533 534 void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw, 535 struct ieee80211_vif *vif, 536 struct ieee80211_sta *sta) 537 { 538 struct mt76x02_dev *dev = hw->priv; 539 struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv; 540 struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates); 541 struct ieee80211_tx_rate rate = {}; 542 543 if (!rates) 544 return; 545 546 rate.idx = rates->rate[0].idx; 547 rate.flags = rates->rate[0].flags; 548 mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate); 549 msta->wcid.max_txpwr_adj = mt76x02_tx_get_max_txpwr_adj(dev, &rate); 550 } 551 EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update); 552 553 int mt76x02_insert_hdr_pad(struct sk_buff *skb) 554 { 555 int len = ieee80211_get_hdrlen_from_skb(skb); 556 557 if (len % 4 == 0) 558 return 0; 559 560 skb_push(skb, 2); 561 memmove(skb->data, skb->data + 2, len); 562 563 skb->data[len] = 0; 564 skb->data[len + 1] = 0; 565 return 2; 566 } 567 EXPORT_SYMBOL_GPL(mt76x02_insert_hdr_pad); 568 569 void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len) 570 { 571 int hdrlen; 572 573 if (!len) 574 return; 575 576 hdrlen = ieee80211_get_hdrlen_from_skb(skb); 577 memmove(skb->data + len, skb->data, hdrlen); 578 skb_pull(skb, len); 579 } 580 EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad); 581 582 void mt76x02_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 583 const u8 *mac) 584 { 585 struct mt76x02_dev *dev = hw->priv; 586 587 if (mt76_is_mmio(dev)) 588 tasklet_disable(&dev->pre_tbtt_tasklet); 589 set_bit(MT76_SCANNING, &dev->mt76.state); 590 } 591 EXPORT_SYMBOL_GPL(mt76x02_sw_scan); 592 593 void mt76x02_sw_scan_complete(struct ieee80211_hw *hw, 594 struct ieee80211_vif *vif) 595 { 596 struct mt76x02_dev *dev = hw->priv; 597 598 clear_bit(MT76_SCANNING, &dev->mt76.state); 599 if (mt76_is_mmio(dev)) 600 tasklet_enable(&dev->pre_tbtt_tasklet); 601 602 if (dev->cal.gain_init_done) { 603 /* Restore AGC gain and resume calibration after scanning. */ 604 dev->cal.low_gain = -1; 605 ieee80211_queue_delayed_work(hw, &dev->cal_work, 0); 606 } 607 } 608 EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete); 609 610 void mt76x02_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta, 611 bool ps) 612 { 613 struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76); 614 struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv; 615 int idx = msta->wcid.idx; 616 617 mt76_stop_tx_queues(&dev->mt76, sta, true); 618 mt76x02_mac_wcid_set_drop(dev, idx, ps); 619 } 620 EXPORT_SYMBOL_GPL(mt76x02_sta_ps); 621 622 const u16 mt76x02_beacon_offsets[16] = { 623 /* 1024 byte per beacon */ 624 0xc000, 625 0xc400, 626 0xc800, 627 0xcc00, 628 0xd000, 629 0xd400, 630 0xd800, 631 0xdc00, 632 /* BSS idx 8-15 not used for beacons */ 633 0xc000, 634 0xc000, 635 0xc000, 636 0xc000, 637 0xc000, 638 0xc000, 639 0xc000, 640 0xc000, 641 }; 642 643 static void mt76x02_set_beacon_offsets(struct mt76x02_dev *dev) 644 { 645 u16 val, base = MT_BEACON_BASE; 646 u32 regs[4] = {}; 647 int i; 648 649 for (i = 0; i < 16; i++) { 650 val = mt76x02_beacon_offsets[i] - base; 651 regs[i / 4] |= (val / 64) << (8 * (i % 4)); 652 } 653 654 for (i = 0; i < 4; i++) 655 mt76_wr(dev, MT_BCN_OFFSET(i), regs[i]); 656 } 657 658 void mt76x02_init_beacon_config(struct mt76x02_dev *dev) 659 { 660 static const u8 null_addr[ETH_ALEN] = {}; 661 int i; 662 663 mt76_wr(dev, MT_MAC_BSSID_DW0, 664 get_unaligned_le32(dev->mt76.macaddr)); 665 mt76_wr(dev, MT_MAC_BSSID_DW1, 666 get_unaligned_le16(dev->mt76.macaddr + 4) | 667 FIELD_PREP(MT_MAC_BSSID_DW1_MBSS_MODE, 3) | /* 8 beacons */ 668 MT_MAC_BSSID_DW1_MBSS_LOCAL_BIT); 669 670 /* Fire a pre-TBTT interrupt 8 ms before TBTT */ 671 mt76_rmw_field(dev, MT_INT_TIMER_CFG, MT_INT_TIMER_CFG_PRE_TBTT, 672 8 << 4); 673 mt76_rmw_field(dev, MT_INT_TIMER_CFG, MT_INT_TIMER_CFG_GP_TIMER, 674 MT_DFS_GP_INTERVAL); 675 mt76_wr(dev, MT_INT_TIMER_EN, 0); 676 677 mt76_wr(dev, MT_BCN_BYPASS_MASK, 0xffff); 678 679 for (i = 0; i < 8; i++) { 680 mt76x02_mac_set_bssid(dev, i, null_addr); 681 mt76x02_mac_set_beacon(dev, i, NULL); 682 } 683 mt76x02_set_beacon_offsets(dev); 684 } 685 EXPORT_SYMBOL_GPL(mt76x02_init_beacon_config); 686 687 void mt76x02_bss_info_changed(struct ieee80211_hw *hw, 688 struct ieee80211_vif *vif, 689 struct ieee80211_bss_conf *info, 690 u32 changed) 691 { 692 struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv; 693 struct mt76x02_dev *dev = hw->priv; 694 695 mutex_lock(&dev->mt76.mutex); 696 697 if (changed & BSS_CHANGED_BSSID) 698 mt76x02_mac_set_bssid(dev, mvif->idx, info->bssid); 699 700 if (changed & BSS_CHANGED_BEACON_ENABLED) { 701 tasklet_disable(&dev->pre_tbtt_tasklet); 702 mt76x02_mac_set_beacon_enable(dev, mvif->idx, 703 info->enable_beacon); 704 tasklet_enable(&dev->pre_tbtt_tasklet); 705 } 706 707 if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT) 708 mt76x02_mac_set_tx_protection(dev, info->use_cts_prot, 709 info->ht_operation_mode); 710 711 if (changed & BSS_CHANGED_BEACON_INT) { 712 mt76_rmw_field(dev, MT_BEACON_TIME_CFG, 713 MT_BEACON_TIME_CFG_INTVAL, 714 info->beacon_int << 4); 715 dev->beacon_int = info->beacon_int; 716 dev->tbtt_count = 0; 717 } 718 719 if (changed & BSS_CHANGED_ERP_PREAMBLE) 720 mt76x02_mac_set_short_preamble(dev, info->use_short_preamble); 721 722 if (changed & BSS_CHANGED_ERP_SLOT) { 723 int slottime = info->use_short_slot ? 9 : 20; 724 725 dev->slottime = slottime; 726 mt76x02_set_tx_ackto(dev); 727 } 728 729 mutex_unlock(&dev->mt76.mutex); 730 } 731 EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed); 732 733 void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev) 734 { 735 struct ieee80211_hw *hw = mt76_hw(dev); 736 struct wiphy *wiphy = hw->wiphy; 737 int i; 738 739 for (i = 0; i < ARRAY_SIZE(dev->macaddr_list); i++) { 740 u8 *addr = dev->macaddr_list[i].addr; 741 742 memcpy(addr, dev->mt76.macaddr, ETH_ALEN); 743 744 if (!i) 745 continue; 746 747 addr[0] |= BIT(1); 748 addr[0] ^= ((i - 1) << 2); 749 } 750 wiphy->addresses = dev->macaddr_list; 751 wiphy->n_addresses = ARRAY_SIZE(dev->macaddr_list); 752 } 753 EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list); 754 755 MODULE_LICENSE("Dual BSD/GPL"); 756