root/drivers/net/wireless/mediatek/mt76/mt76x02_util.c

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DEFINITIONS

This source file includes following definitions.
  1. mt76x02_led_set_config
  2. mt76x02_led_set_blink
  3. mt76x02_led_set_brightness
  4. mt76x02_init_device
  5. mt76x02_configure_filter
  6. mt76x02_sta_add
  7. mt76x02_sta_remove
  8. mt76x02_vif_init
  9. mt76x02_add_interface
  10. mt76x02_remove_interface
  11. mt76x02_ampdu_action
  12. mt76x02_set_key
  13. mt76x02_conf_tx
  14. mt76x02_set_tx_ackto
  15. mt76x02_set_coverage_class
  16. mt76x02_set_rts_threshold
  17. mt76x02_sta_rate_tbl_update
  18. mt76x02_remove_hdr_pad
  19. mt76x02_sw_scan_complete
  20. mt76x02_sta_ps
  21. mt76x02_bss_info_changed
  22. mt76x02_config_mac_addr_list

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Copyright (C) 2018 Stanislaw Gruszka <stf_xl@wp.pl>
   4  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   5  */
   6 
   7 #include <linux/module.h>
   8 #include "mt76x02.h"
   9 
  10 #define CCK_RATE(_idx, _rate) {                                 \
  11         .bitrate = _rate,                                       \
  12         .flags = IEEE80211_RATE_SHORT_PREAMBLE,                 \
  13         .hw_value = (MT_PHY_TYPE_CCK << 8) | (_idx),            \
  14         .hw_value_short = (MT_PHY_TYPE_CCK << 8) | (8 + (_idx)),        \
  15 }
  16 
  17 #define OFDM_RATE(_idx, _rate) {                                \
  18         .bitrate = _rate,                                       \
  19         .hw_value = (MT_PHY_TYPE_OFDM << 8) | (_idx),           \
  20         .hw_value_short = (MT_PHY_TYPE_OFDM << 8) | (_idx),     \
  21 }
  22 
  23 struct ieee80211_rate mt76x02_rates[] = {
  24         CCK_RATE(0, 10),
  25         CCK_RATE(1, 20),
  26         CCK_RATE(2, 55),
  27         CCK_RATE(3, 110),
  28         OFDM_RATE(0, 60),
  29         OFDM_RATE(1, 90),
  30         OFDM_RATE(2, 120),
  31         OFDM_RATE(3, 180),
  32         OFDM_RATE(4, 240),
  33         OFDM_RATE(5, 360),
  34         OFDM_RATE(6, 480),
  35         OFDM_RATE(7, 540),
  36 };
  37 EXPORT_SYMBOL_GPL(mt76x02_rates);
  38 
  39 static const struct ieee80211_iface_limit mt76x02_if_limits[] = {
  40         {
  41                 .max = 1,
  42                 .types = BIT(NL80211_IFTYPE_ADHOC)
  43         }, {
  44                 .max = 8,
  45                 .types = BIT(NL80211_IFTYPE_STATION) |
  46 #ifdef CONFIG_MAC80211_MESH
  47                          BIT(NL80211_IFTYPE_MESH_POINT) |
  48 #endif
  49                          BIT(NL80211_IFTYPE_AP)
  50          },
  51 };
  52 
  53 static const struct ieee80211_iface_limit mt76x02u_if_limits[] = {
  54         {
  55                 .max = 1,
  56                 .types = BIT(NL80211_IFTYPE_ADHOC)
  57         }, {
  58                 .max = 2,
  59                 .types = BIT(NL80211_IFTYPE_STATION) |
  60 #ifdef CONFIG_MAC80211_MESH
  61                          BIT(NL80211_IFTYPE_MESH_POINT) |
  62 #endif
  63                          BIT(NL80211_IFTYPE_AP)
  64         },
  65 };
  66 
  67 static const struct ieee80211_iface_combination mt76x02_if_comb[] = {
  68         {
  69                 .limits = mt76x02_if_limits,
  70                 .n_limits = ARRAY_SIZE(mt76x02_if_limits),
  71                 .max_interfaces = 8,
  72                 .num_different_channels = 1,
  73                 .beacon_int_infra_match = true,
  74                 .radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
  75                                        BIT(NL80211_CHAN_WIDTH_20) |
  76                                        BIT(NL80211_CHAN_WIDTH_40) |
  77                                        BIT(NL80211_CHAN_WIDTH_80),
  78         }
  79 };
  80 
  81 static const struct ieee80211_iface_combination mt76x02u_if_comb[] = {
  82         {
  83                 .limits = mt76x02u_if_limits,
  84                 .n_limits = ARRAY_SIZE(mt76x02u_if_limits),
  85                 .max_interfaces = 2,
  86                 .num_different_channels = 1,
  87                 .beacon_int_infra_match = true,
  88         }
  89 };
  90 
  91 static void
  92 mt76x02_led_set_config(struct mt76_dev *mdev, u8 delay_on,
  93                        u8 delay_off)
  94 {
  95         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev,
  96                                                mt76);
  97         u32 val;
  98 
  99         val = MT_LED_STATUS_DURATION(0xff) |
 100               MT_LED_STATUS_OFF(delay_off) |
 101               MT_LED_STATUS_ON(delay_on);
 102 
 103         mt76_wr(dev, MT_LED_S0(mdev->led_pin), val);
 104         mt76_wr(dev, MT_LED_S1(mdev->led_pin), val);
 105 
 106         val = MT_LED_CTRL_REPLAY(mdev->led_pin) |
 107               MT_LED_CTRL_KICK(mdev->led_pin);
 108         if (mdev->led_al)
 109                 val |= MT_LED_CTRL_POLARITY(mdev->led_pin);
 110         mt76_wr(dev, MT_LED_CTRL, val);
 111 }
 112 
 113 static int
 114 mt76x02_led_set_blink(struct led_classdev *led_cdev,
 115                       unsigned long *delay_on,
 116                       unsigned long *delay_off)
 117 {
 118         struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev,
 119                                              led_cdev);
 120         u8 delta_on, delta_off;
 121 
 122         delta_off = max_t(u8, *delay_off / 10, 1);
 123         delta_on = max_t(u8, *delay_on / 10, 1);
 124 
 125         mt76x02_led_set_config(mdev, delta_on, delta_off);
 126 
 127         return 0;
 128 }
 129 
 130 static void
 131 mt76x02_led_set_brightness(struct led_classdev *led_cdev,
 132                            enum led_brightness brightness)
 133 {
 134         struct mt76_dev *mdev = container_of(led_cdev, struct mt76_dev,
 135                                              led_cdev);
 136 
 137         if (!brightness)
 138                 mt76x02_led_set_config(mdev, 0, 0xff);
 139         else
 140                 mt76x02_led_set_config(mdev, 0xff, 0);
 141 }
 142 
 143 void mt76x02_init_device(struct mt76x02_dev *dev)
 144 {
 145         struct ieee80211_hw *hw = mt76_hw(dev);
 146         struct wiphy *wiphy = hw->wiphy;
 147 
 148         INIT_DELAYED_WORK(&dev->mt76.mac_work, mt76x02_mac_work);
 149 
 150         hw->queues = 4;
 151         hw->max_rates = 1;
 152         hw->max_report_rates = 7;
 153         hw->max_rate_tries = 1;
 154         hw->extra_tx_headroom = 2;
 155 
 156         wiphy->interface_modes =
 157                 BIT(NL80211_IFTYPE_STATION) |
 158                 BIT(NL80211_IFTYPE_AP) |
 159 #ifdef CONFIG_MAC80211_MESH
 160                 BIT(NL80211_IFTYPE_MESH_POINT) |
 161 #endif
 162                 BIT(NL80211_IFTYPE_ADHOC);
 163 
 164         if (mt76_is_usb(dev)) {
 165                 hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) +
 166                                          MT_DMA_HDR_LEN;
 167                 wiphy->iface_combinations = mt76x02u_if_comb;
 168                 wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02u_if_comb);
 169         } else {
 170                 INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work);
 171 
 172                 mt76x02_dfs_init_detector(dev);
 173 
 174                 wiphy->reg_notifier = mt76x02_regd_notifier;
 175                 wiphy->iface_combinations = mt76x02_if_comb;
 176                 wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb);
 177                 wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 178 
 179                 /* init led callbacks */
 180                 if (IS_ENABLED(CONFIG_MT76_LEDS)) {
 181                         dev->mt76.led_cdev.brightness_set =
 182                                         mt76x02_led_set_brightness;
 183                         dev->mt76.led_cdev.blink_set = mt76x02_led_set_blink;
 184                 }
 185         }
 186 
 187         wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
 188 
 189         hw->sta_data_size = sizeof(struct mt76x02_sta);
 190         hw->vif_data_size = sizeof(struct mt76x02_vif);
 191 
 192         ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
 193         ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 194 
 195         dev->mt76.global_wcid.idx = 255;
 196         dev->mt76.global_wcid.hw_key_idx = -1;
 197         dev->slottime = 9;
 198 
 199         if (is_mt76x2(dev)) {
 200                 dev->mt76.sband_2g.sband.ht_cap.cap |=
 201                                 IEEE80211_HT_CAP_LDPC_CODING;
 202                 dev->mt76.sband_5g.sband.ht_cap.cap |=
 203                                 IEEE80211_HT_CAP_LDPC_CODING;
 204                 dev->mt76.chainmask = 0x202;
 205                 dev->mt76.antenna_mask = 3;
 206         } else {
 207                 dev->mt76.chainmask = 0x101;
 208                 dev->mt76.antenna_mask = 1;
 209         }
 210 }
 211 EXPORT_SYMBOL_GPL(mt76x02_init_device);
 212 
 213 void mt76x02_configure_filter(struct ieee80211_hw *hw,
 214                               unsigned int changed_flags,
 215                               unsigned int *total_flags, u64 multicast)
 216 {
 217         struct mt76x02_dev *dev = hw->priv;
 218         u32 flags = 0;
 219 
 220 #define MT76_FILTER(_flag, _hw) do { \
 221                 flags |= *total_flags & FIF_##_flag;                    \
 222                 dev->mt76.rxfilter &= ~(_hw);                           \
 223                 dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw);   \
 224         } while (0)
 225 
 226         mutex_lock(&dev->mt76.mutex);
 227 
 228         dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
 229 
 230         MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
 231         MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
 232         MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
 233                              MT_RX_FILTR_CFG_CTS |
 234                              MT_RX_FILTR_CFG_CFEND |
 235                              MT_RX_FILTR_CFG_CFACK |
 236                              MT_RX_FILTR_CFG_BA |
 237                              MT_RX_FILTR_CFG_CTRL_RSV);
 238         MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
 239 
 240         *total_flags = flags;
 241         mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
 242 
 243         mutex_unlock(&dev->mt76.mutex);
 244 }
 245 EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
 246 
 247 int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 248                     struct ieee80211_sta *sta)
 249 {
 250         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 251         struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 252         struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 253         int idx = 0;
 254 
 255         memset(msta, 0, sizeof(*msta));
 256 
 257         idx = mt76_wcid_alloc(dev->mt76.wcid_mask, ARRAY_SIZE(dev->mt76.wcid));
 258         if (idx < 0)
 259                 return -ENOSPC;
 260 
 261         msta->vif = mvif;
 262         msta->wcid.sta = 1;
 263         msta->wcid.idx = idx;
 264         msta->wcid.hw_key_idx = -1;
 265         mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
 266         mt76x02_mac_wcid_set_drop(dev, idx, false);
 267 
 268         if (vif->type == NL80211_IFTYPE_AP)
 269                 set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
 270 
 271         return 0;
 272 }
 273 EXPORT_SYMBOL_GPL(mt76x02_sta_add);
 274 
 275 void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 276                         struct ieee80211_sta *sta)
 277 {
 278         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 279         struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
 280         int idx = wcid->idx;
 281 
 282         mt76x02_mac_wcid_set_drop(dev, idx, true);
 283         mt76x02_mac_wcid_setup(dev, idx, 0, NULL);
 284 }
 285 EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
 286 
 287 static void
 288 mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
 289                  unsigned int idx)
 290 {
 291         struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 292         struct mt76_txq *mtxq;
 293 
 294         memset(mvif, 0, sizeof(*mvif));
 295 
 296         mvif->idx = idx;
 297         mvif->group_wcid.idx = MT_VIF_WCID(idx);
 298         mvif->group_wcid.hw_key_idx = -1;
 299         mtxq = (struct mt76_txq *)vif->txq->drv_priv;
 300         mtxq->wcid = &mvif->group_wcid;
 301 
 302         mt76_txq_init(&dev->mt76, vif->txq);
 303 }
 304 
 305 int
 306 mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 307 {
 308         struct mt76x02_dev *dev = hw->priv;
 309         unsigned int idx = 0;
 310 
 311         /* Allow to change address in HW if we create first interface. */
 312         if (!dev->vif_mask &&
 313             (((vif->addr[0] ^ dev->mt76.macaddr[0]) & ~GENMASK(4, 1)) ||
 314              memcmp(vif->addr + 1, dev->mt76.macaddr + 1, ETH_ALEN - 1)))
 315                 mt76x02_mac_setaddr(dev, vif->addr);
 316 
 317         if (vif->addr[0] & BIT(1))
 318                 idx = 1 + (((dev->mt76.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
 319 
 320         /*
 321          * Client mode typically only has one configurable BSSID register,
 322          * which is used for bssidx=0. This is linked to the MAC address.
 323          * Since mac80211 allows changing interface types, and we cannot
 324          * force the use of the primary MAC address for a station mode
 325          * interface, we need some other way of configuring a per-interface
 326          * remote BSSID.
 327          * The hardware provides an AP-Client feature, where bssidx 0-7 are
 328          * used for AP mode and bssidx 8-15 for client mode.
 329          * We shift the station interface bss index by 8 to force the
 330          * hardware to recognize the BSSID.
 331          * The resulting bssidx mismatch for unicast frames is ignored by hw.
 332          */
 333         if (vif->type == NL80211_IFTYPE_STATION)
 334                 idx += 8;
 335 
 336         if (dev->vif_mask & BIT(idx))
 337                 return -EBUSY;
 338 
 339         dev->vif_mask |= BIT(idx);
 340 
 341         mt76x02_vif_init(dev, vif, idx);
 342         return 0;
 343 }
 344 EXPORT_SYMBOL_GPL(mt76x02_add_interface);
 345 
 346 void mt76x02_remove_interface(struct ieee80211_hw *hw,
 347                               struct ieee80211_vif *vif)
 348 {
 349         struct mt76x02_dev *dev = hw->priv;
 350         struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 351 
 352         mt76_txq_remove(&dev->mt76, vif->txq);
 353         dev->vif_mask &= ~BIT(mvif->idx);
 354 }
 355 EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
 356 
 357 int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 358                          struct ieee80211_ampdu_params *params)
 359 {
 360         enum ieee80211_ampdu_mlme_action action = params->action;
 361         struct ieee80211_sta *sta = params->sta;
 362         struct mt76x02_dev *dev = hw->priv;
 363         struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 364         struct ieee80211_txq *txq = sta->txq[params->tid];
 365         u16 tid = params->tid;
 366         u16 ssn = params->ssn;
 367         struct mt76_txq *mtxq;
 368 
 369         if (!txq)
 370                 return -EINVAL;
 371 
 372         mtxq = (struct mt76_txq *)txq->drv_priv;
 373 
 374         switch (action) {
 375         case IEEE80211_AMPDU_RX_START:
 376                 mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid,
 377                                    ssn, params->buf_size);
 378                 mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
 379                 break;
 380         case IEEE80211_AMPDU_RX_STOP:
 381                 mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
 382                 mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
 383                            BIT(16 + tid));
 384                 break;
 385         case IEEE80211_AMPDU_TX_OPERATIONAL:
 386                 mtxq->aggr = true;
 387                 mtxq->send_bar = false;
 388                 ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
 389                 break;
 390         case IEEE80211_AMPDU_TX_STOP_FLUSH:
 391         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 392                 mtxq->aggr = false;
 393                 break;
 394         case IEEE80211_AMPDU_TX_START:
 395                 mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
 396                 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 397                 break;
 398         case IEEE80211_AMPDU_TX_STOP_CONT:
 399                 mtxq->aggr = false;
 400                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 401                 break;
 402         }
 403 
 404         return 0;
 405 }
 406 EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
 407 
 408 int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 409                     struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 410                     struct ieee80211_key_conf *key)
 411 {
 412         struct mt76x02_dev *dev = hw->priv;
 413         struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 414         struct mt76x02_sta *msta;
 415         struct mt76_wcid *wcid;
 416         int idx = key->keyidx;
 417         int ret;
 418 
 419         /* fall back to sw encryption for unsupported ciphers */
 420         switch (key->cipher) {
 421         case WLAN_CIPHER_SUITE_WEP40:
 422         case WLAN_CIPHER_SUITE_WEP104:
 423         case WLAN_CIPHER_SUITE_TKIP:
 424         case WLAN_CIPHER_SUITE_CCMP:
 425                 break;
 426         default:
 427                 return -EOPNOTSUPP;
 428         }
 429 
 430         /*
 431          * The hardware does not support per-STA RX GTK, fall back
 432          * to software mode for these.
 433          */
 434         if ((vif->type == NL80211_IFTYPE_ADHOC ||
 435              vif->type == NL80211_IFTYPE_MESH_POINT) &&
 436             (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
 437              key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
 438             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 439                 return -EOPNOTSUPP;
 440 
 441         /*
 442          * In USB AP mode, broadcast/multicast frames are setup in beacon
 443          * data registers and sent via HW beacons engine, they require to
 444          * be already encrypted.
 445          */
 446         if (mt76_is_usb(dev) &&
 447             vif->type == NL80211_IFTYPE_AP &&
 448             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 449                 return -EOPNOTSUPP;
 450 
 451         msta = sta ? (struct mt76x02_sta *)sta->drv_priv : NULL;
 452         wcid = msta ? &msta->wcid : &mvif->group_wcid;
 453 
 454         if (cmd == SET_KEY) {
 455                 key->hw_key_idx = wcid->idx;
 456                 wcid->hw_key_idx = idx;
 457                 if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
 458                         key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
 459                         wcid->sw_iv = true;
 460                 }
 461         } else {
 462                 if (idx == wcid->hw_key_idx) {
 463                         wcid->hw_key_idx = -1;
 464                         wcid->sw_iv = false;
 465                 }
 466 
 467                 key = NULL;
 468         }
 469         mt76_wcid_key_setup(&dev->mt76, wcid, key);
 470 
 471         if (!msta) {
 472                 if (key || wcid->hw_key_idx == idx) {
 473                         ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key);
 474                         if (ret)
 475                                 return ret;
 476                 }
 477 
 478                 return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key);
 479         }
 480 
 481         return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key);
 482 }
 483 EXPORT_SYMBOL_GPL(mt76x02_set_key);
 484 
 485 int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 486                     u16 queue, const struct ieee80211_tx_queue_params *params)
 487 {
 488         struct mt76x02_dev *dev = hw->priv;
 489         u8 cw_min = 5, cw_max = 10, qid;
 490         u32 val;
 491 
 492         qid = dev->mt76.q_tx[queue].q->hw_idx;
 493 
 494         if (params->cw_min)
 495                 cw_min = fls(params->cw_min);
 496         if (params->cw_max)
 497                 cw_max = fls(params->cw_max);
 498 
 499         val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) |
 500               FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) |
 501               FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) |
 502               FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max);
 503         mt76_wr(dev, MT_EDCA_CFG_AC(qid), val);
 504 
 505         val = mt76_rr(dev, MT_WMM_TXOP(qid));
 506         val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid));
 507         val |= params->txop << MT_WMM_TXOP_SHIFT(qid);
 508         mt76_wr(dev, MT_WMM_TXOP(qid), val);
 509 
 510         val = mt76_rr(dev, MT_WMM_AIFSN);
 511         val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid));
 512         val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid);
 513         mt76_wr(dev, MT_WMM_AIFSN, val);
 514 
 515         val = mt76_rr(dev, MT_WMM_CWMIN);
 516         val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
 517         val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
 518         mt76_wr(dev, MT_WMM_CWMIN, val);
 519 
 520         val = mt76_rr(dev, MT_WMM_CWMAX);
 521         val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid));
 522         val |= cw_max << MT_WMM_CWMAX_SHIFT(qid);
 523         mt76_wr(dev, MT_WMM_CWMAX, val);
 524 
 525         return 0;
 526 }
 527 EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
 528 
 529 void mt76x02_set_tx_ackto(struct mt76x02_dev *dev)
 530 {
 531         u8 ackto, sifs, slottime = dev->slottime;
 532 
 533         /* As defined by IEEE 802.11-2007 17.3.8.6 */
 534         slottime += 3 * dev->coverage_class;
 535         mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
 536                        MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
 537 
 538         sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG,
 539                               MT_XIFS_TIME_CFG_OFDM_SIFS);
 540 
 541         ackto = slottime + sifs;
 542         mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG,
 543                        MT_TX_TIMEOUT_CFG_ACKTO, ackto);
 544 }
 545 EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
 546 
 547 void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
 548                                 s16 coverage_class)
 549 {
 550         struct mt76x02_dev *dev = hw->priv;
 551 
 552         mutex_lock(&dev->mt76.mutex);
 553         dev->coverage_class = coverage_class;
 554         mt76x02_set_tx_ackto(dev);
 555         mutex_unlock(&dev->mt76.mutex);
 556 }
 557 EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
 558 
 559 int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
 560 {
 561         struct mt76x02_dev *dev = hw->priv;
 562 
 563         if (val != ~0 && val > 0xffff)
 564                 return -EINVAL;
 565 
 566         mutex_lock(&dev->mt76.mutex);
 567         mt76x02_mac_set_rts_thresh(dev, val);
 568         mutex_unlock(&dev->mt76.mutex);
 569 
 570         return 0;
 571 }
 572 EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
 573 
 574 void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
 575                                  struct ieee80211_vif *vif,
 576                                  struct ieee80211_sta *sta)
 577 {
 578         struct mt76x02_dev *dev = hw->priv;
 579         struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 580         struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates);
 581         struct ieee80211_tx_rate rate = {};
 582 
 583         if (!rates)
 584                 return;
 585 
 586         rate.idx = rates->rate[0].idx;
 587         rate.flags = rates->rate[0].flags;
 588         mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate);
 589 }
 590 EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
 591 
 592 void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len)
 593 {
 594         int hdrlen;
 595 
 596         if (!len)
 597                 return;
 598 
 599         hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 600         memmove(skb->data + len, skb->data, hdrlen);
 601         skb_pull(skb, len);
 602 }
 603 EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
 604 
 605 void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
 606                               struct ieee80211_vif *vif)
 607 {
 608         struct mt76x02_dev *dev = hw->priv;
 609 
 610         clear_bit(MT76_SCANNING, &dev->mt76.state);
 611         if (dev->cal.gain_init_done) {
 612                 /* Restore AGC gain and resume calibration after scanning. */
 613                 dev->cal.low_gain = -1;
 614                 ieee80211_queue_delayed_work(hw, &dev->cal_work, 0);
 615         }
 616 }
 617 EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
 618 
 619 void mt76x02_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta,
 620                     bool ps)
 621 {
 622         struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 623         struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 624         int idx = msta->wcid.idx;
 625 
 626         mt76_stop_tx_queues(&dev->mt76, sta, true);
 627         if (mt76_is_mmio(dev))
 628                 mt76x02_mac_wcid_set_drop(dev, idx, ps);
 629 }
 630 EXPORT_SYMBOL_GPL(mt76x02_sta_ps);
 631 
 632 void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
 633                               struct ieee80211_vif *vif,
 634                               struct ieee80211_bss_conf *info,
 635                               u32 changed)
 636 {
 637         struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 638         struct mt76x02_dev *dev = hw->priv;
 639 
 640         mutex_lock(&dev->mt76.mutex);
 641 
 642         if (changed & BSS_CHANGED_BSSID)
 643                 mt76x02_mac_set_bssid(dev, mvif->idx, info->bssid);
 644 
 645         if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
 646                 mt76x02_mac_set_tx_protection(dev, info->use_cts_prot,
 647                                               info->ht_operation_mode);
 648 
 649         if (changed & BSS_CHANGED_BEACON_INT) {
 650                 mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
 651                                MT_BEACON_TIME_CFG_INTVAL,
 652                                info->beacon_int << 4);
 653                 dev->mt76.beacon_int = info->beacon_int;
 654         }
 655 
 656         if (changed & BSS_CHANGED_BEACON_ENABLED)
 657                 mt76x02_mac_set_beacon_enable(dev, vif, info->enable_beacon);
 658 
 659         if (changed & BSS_CHANGED_ERP_PREAMBLE)
 660                 mt76x02_mac_set_short_preamble(dev, info->use_short_preamble);
 661 
 662         if (changed & BSS_CHANGED_ERP_SLOT) {
 663                 int slottime = info->use_short_slot ? 9 : 20;
 664 
 665                 dev->slottime = slottime;
 666                 mt76x02_set_tx_ackto(dev);
 667         }
 668 
 669         mutex_unlock(&dev->mt76.mutex);
 670 }
 671 EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed);
 672 
 673 void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev)
 674 {
 675         struct ieee80211_hw *hw = mt76_hw(dev);
 676         struct wiphy *wiphy = hw->wiphy;
 677         int i;
 678 
 679         for (i = 0; i < ARRAY_SIZE(dev->macaddr_list); i++) {
 680                 u8 *addr = dev->macaddr_list[i].addr;
 681 
 682                 memcpy(addr, dev->mt76.macaddr, ETH_ALEN);
 683 
 684                 if (!i)
 685                         continue;
 686 
 687                 addr[0] |= BIT(1);
 688                 addr[0] ^= ((i - 1) << 2);
 689         }
 690         wiphy->addresses = dev->macaddr_list;
 691         wiphy->n_addresses = ARRAY_SIZE(dev->macaddr_list);
 692 }
 693 EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list);
 694 
 695 MODULE_LICENSE("Dual BSD/GPL");

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