linux/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
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   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
  23struct 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};
  37EXPORT_SYMBOL_GPL(mt76x02_rates);
  38
  39static 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
  53static 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
  67static 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
  81static 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
  91static void
  92mt76x02_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
 113static int
 114mt76x02_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
 130static void
 131mt76x02_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
 143void 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        if (mt76_is_usb(&dev->mt76)) {
 157                hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) +
 158                                         MT_DMA_HDR_LEN;
 159                wiphy->iface_combinations = mt76x02u_if_comb;
 160                wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02u_if_comb);
 161        } else {
 162                INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work);
 163
 164                mt76x02_dfs_init_detector(dev);
 165
 166                wiphy->reg_notifier = mt76x02_regd_notifier;
 167                wiphy->iface_combinations = mt76x02_if_comb;
 168                wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb);
 169                wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 170
 171                /* init led callbacks */
 172                if (IS_ENABLED(CONFIG_MT76_LEDS)) {
 173                        dev->mt76.led_cdev.brightness_set =
 174                                        mt76x02_led_set_brightness;
 175                        dev->mt76.led_cdev.blink_set = mt76x02_led_set_blink;
 176                }
 177        }
 178
 179        wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
 180
 181        hw->sta_data_size = sizeof(struct mt76x02_sta);
 182        hw->vif_data_size = sizeof(struct mt76x02_vif);
 183
 184        ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
 185
 186        dev->mt76.global_wcid.idx = 255;
 187        dev->mt76.global_wcid.hw_key_idx = -1;
 188        dev->slottime = 9;
 189
 190        if (is_mt76x2(dev)) {
 191                dev->mt76.sband_2g.sband.ht_cap.cap |=
 192                                IEEE80211_HT_CAP_LDPC_CODING;
 193                dev->mt76.sband_5g.sband.ht_cap.cap |=
 194                                IEEE80211_HT_CAP_LDPC_CODING;
 195                dev->mt76.chainmask = 0x202;
 196                dev->mt76.antenna_mask = 3;
 197        } else {
 198                dev->mt76.chainmask = 0x101;
 199                dev->mt76.antenna_mask = 1;
 200        }
 201}
 202EXPORT_SYMBOL_GPL(mt76x02_init_device);
 203
 204void mt76x02_configure_filter(struct ieee80211_hw *hw,
 205                              unsigned int changed_flags,
 206                              unsigned int *total_flags, u64 multicast)
 207{
 208        struct mt76x02_dev *dev = hw->priv;
 209        u32 flags = 0;
 210
 211#define MT76_FILTER(_flag, _hw) do { \
 212                flags |= *total_flags & FIF_##_flag;                    \
 213                dev->mt76.rxfilter &= ~(_hw);                           \
 214                dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw);   \
 215        } while (0)
 216
 217        mutex_lock(&dev->mt76.mutex);
 218
 219        dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
 220
 221        MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
 222        MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
 223        MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
 224                             MT_RX_FILTR_CFG_CTS |
 225                             MT_RX_FILTR_CFG_CFEND |
 226                             MT_RX_FILTR_CFG_CFACK |
 227                             MT_RX_FILTR_CFG_BA |
 228                             MT_RX_FILTR_CFG_CTRL_RSV);
 229        MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
 230
 231        *total_flags = flags;
 232        mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
 233
 234        mutex_unlock(&dev->mt76.mutex);
 235}
 236EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
 237
 238int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 239                    struct ieee80211_sta *sta)
 240{
 241        struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 242        struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 243        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 244        int idx = 0;
 245
 246        memset(msta, 0, sizeof(*msta));
 247
 248        idx = mt76_wcid_alloc(dev->mt76.wcid_mask, ARRAY_SIZE(dev->mt76.wcid));
 249        if (idx < 0)
 250                return -ENOSPC;
 251
 252        msta->vif = mvif;
 253        msta->wcid.sta = 1;
 254        msta->wcid.idx = idx;
 255        msta->wcid.hw_key_idx = -1;
 256        mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
 257        mt76x02_mac_wcid_set_drop(dev, idx, false);
 258        ewma_pktlen_init(&msta->pktlen);
 259
 260        if (vif->type == NL80211_IFTYPE_AP)
 261                set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
 262
 263        return 0;
 264}
 265EXPORT_SYMBOL_GPL(mt76x02_sta_add);
 266
 267void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 268                        struct ieee80211_sta *sta)
 269{
 270        struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 271        struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
 272        int idx = wcid->idx;
 273
 274        mt76x02_mac_wcid_set_drop(dev, idx, true);
 275        mt76x02_mac_wcid_setup(dev, idx, 0, NULL);
 276}
 277EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
 278
 279static void
 280mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
 281                 unsigned int idx)
 282{
 283        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 284        struct mt76_txq *mtxq;
 285
 286        memset(mvif, 0, sizeof(*mvif));
 287
 288        mvif->idx = idx;
 289        mvif->group_wcid.idx = MT_VIF_WCID(idx);
 290        mvif->group_wcid.hw_key_idx = -1;
 291        mtxq = (struct mt76_txq *)vif->txq->drv_priv;
 292        mtxq->wcid = &mvif->group_wcid;
 293
 294        mt76_txq_init(&dev->mt76, vif->txq);
 295}
 296
 297int
 298mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 299{
 300        struct mt76x02_dev *dev = hw->priv;
 301        unsigned int idx = 0;
 302
 303        /* Allow to change address in HW if we create first interface. */
 304        if (!dev->vif_mask &&
 305            (((vif->addr[0] ^ dev->mt76.macaddr[0]) & ~GENMASK(4, 1)) ||
 306             memcmp(vif->addr + 1, dev->mt76.macaddr + 1, ETH_ALEN - 1)))
 307                mt76x02_mac_setaddr(dev, vif->addr);
 308
 309        if (vif->addr[0] & BIT(1))
 310                idx = 1 + (((dev->mt76.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
 311
 312        /*
 313         * Client mode typically only has one configurable BSSID register,
 314         * which is used for bssidx=0. This is linked to the MAC address.
 315         * Since mac80211 allows changing interface types, and we cannot
 316         * force the use of the primary MAC address for a station mode
 317         * interface, we need some other way of configuring a per-interface
 318         * remote BSSID.
 319         * The hardware provides an AP-Client feature, where bssidx 0-7 are
 320         * used for AP mode and bssidx 8-15 for client mode.
 321         * We shift the station interface bss index by 8 to force the
 322         * hardware to recognize the BSSID.
 323         * The resulting bssidx mismatch for unicast frames is ignored by hw.
 324         */
 325        if (vif->type == NL80211_IFTYPE_STATION)
 326                idx += 8;
 327
 328        if (dev->vif_mask & BIT(idx))
 329                return -EBUSY;
 330
 331        dev->vif_mask |= BIT(idx);
 332
 333        mt76x02_vif_init(dev, vif, idx);
 334        return 0;
 335}
 336EXPORT_SYMBOL_GPL(mt76x02_add_interface);
 337
 338void mt76x02_remove_interface(struct ieee80211_hw *hw,
 339                              struct ieee80211_vif *vif)
 340{
 341        struct mt76x02_dev *dev = hw->priv;
 342        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 343
 344        mt76_txq_remove(&dev->mt76, vif->txq);
 345        dev->vif_mask &= ~BIT(mvif->idx);
 346}
 347EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
 348
 349int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 350                         struct ieee80211_ampdu_params *params)
 351{
 352        enum ieee80211_ampdu_mlme_action action = params->action;
 353        struct ieee80211_sta *sta = params->sta;
 354        struct mt76x02_dev *dev = hw->priv;
 355        struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 356        struct ieee80211_txq *txq = sta->txq[params->tid];
 357        u16 tid = params->tid;
 358        u16 ssn = params->ssn;
 359        struct mt76_txq *mtxq;
 360        int ret = 0;
 361
 362        if (!txq)
 363                return -EINVAL;
 364
 365        mtxq = (struct mt76_txq *)txq->drv_priv;
 366
 367        mutex_lock(&dev->mt76.mutex);
 368        switch (action) {
 369        case IEEE80211_AMPDU_RX_START:
 370                mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid,
 371                                   ssn, params->buf_size);
 372                mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
 373                break;
 374        case IEEE80211_AMPDU_RX_STOP:
 375                mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
 376                mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
 377                           BIT(16 + tid));
 378                break;
 379        case IEEE80211_AMPDU_TX_OPERATIONAL:
 380                mtxq->aggr = true;
 381                mtxq->send_bar = false;
 382                ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
 383                break;
 384        case IEEE80211_AMPDU_TX_STOP_FLUSH:
 385        case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 386                mtxq->aggr = false;
 387                break;
 388        case IEEE80211_AMPDU_TX_START:
 389                mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(ssn);
 390                ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;
 391                break;
 392        case IEEE80211_AMPDU_TX_STOP_CONT:
 393                mtxq->aggr = false;
 394                ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 395                break;
 396        }
 397        mutex_unlock(&dev->mt76.mutex);
 398
 399        return ret;
 400}
 401EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
 402
 403int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 404                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 405                    struct ieee80211_key_conf *key)
 406{
 407        struct mt76x02_dev *dev = hw->priv;
 408        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 409        struct mt76x02_sta *msta;
 410        struct mt76_wcid *wcid;
 411        int idx = key->keyidx;
 412        int ret;
 413
 414        /* fall back to sw encryption for unsupported ciphers */
 415        switch (key->cipher) {
 416        case WLAN_CIPHER_SUITE_WEP40:
 417        case WLAN_CIPHER_SUITE_WEP104:
 418        case WLAN_CIPHER_SUITE_TKIP:
 419        case WLAN_CIPHER_SUITE_CCMP:
 420                break;
 421        default:
 422                return -EOPNOTSUPP;
 423        }
 424
 425        /*
 426         * The hardware does not support per-STA RX GTK, fall back
 427         * to software mode for these.
 428         */
 429        if ((vif->type == NL80211_IFTYPE_ADHOC ||
 430             vif->type == NL80211_IFTYPE_MESH_POINT) &&
 431            (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
 432             key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
 433            !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 434                return -EOPNOTSUPP;
 435
 436        /*
 437         * In USB AP mode, broadcast/multicast frames are setup in beacon
 438         * data registers and sent via HW beacons engine, they require to
 439         * be already encrypted.
 440         */
 441        if (mt76_is_usb(&dev->mt76) &&
 442            vif->type == NL80211_IFTYPE_AP &&
 443            !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 444                return -EOPNOTSUPP;
 445
 446        msta = sta ? (struct mt76x02_sta *)sta->drv_priv : NULL;
 447        wcid = msta ? &msta->wcid : &mvif->group_wcid;
 448
 449        if (cmd == SET_KEY) {
 450                key->hw_key_idx = wcid->idx;
 451                wcid->hw_key_idx = idx;
 452                if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
 453                        key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
 454                        wcid->sw_iv = true;
 455                }
 456        } else {
 457                if (idx == wcid->hw_key_idx) {
 458                        wcid->hw_key_idx = -1;
 459                        wcid->sw_iv = false;
 460                }
 461
 462                key = NULL;
 463        }
 464        mt76_wcid_key_setup(&dev->mt76, wcid, key);
 465
 466        if (!msta) {
 467                if (key || wcid->hw_key_idx == idx) {
 468                        ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key);
 469                        if (ret)
 470                                return ret;
 471                }
 472
 473                return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key);
 474        }
 475
 476        return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key);
 477}
 478EXPORT_SYMBOL_GPL(mt76x02_set_key);
 479
 480int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 481                    u16 queue, const struct ieee80211_tx_queue_params *params)
 482{
 483        struct mt76x02_dev *dev = hw->priv;
 484        u8 cw_min = 5, cw_max = 10, qid;
 485        u32 val;
 486
 487        qid = dev->mt76.q_tx[queue].q->hw_idx;
 488
 489        if (params->cw_min)
 490                cw_min = fls(params->cw_min);
 491        if (params->cw_max)
 492                cw_max = fls(params->cw_max);
 493
 494        val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) |
 495              FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) |
 496              FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) |
 497              FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max);
 498        mt76_wr(dev, MT_EDCA_CFG_AC(qid), val);
 499
 500        val = mt76_rr(dev, MT_WMM_TXOP(qid));
 501        val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid));
 502        val |= params->txop << MT_WMM_TXOP_SHIFT(qid);
 503        mt76_wr(dev, MT_WMM_TXOP(qid), val);
 504
 505        val = mt76_rr(dev, MT_WMM_AIFSN);
 506        val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid));
 507        val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid);
 508        mt76_wr(dev, MT_WMM_AIFSN, val);
 509
 510        val = mt76_rr(dev, MT_WMM_CWMIN);
 511        val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
 512        val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
 513        mt76_wr(dev, MT_WMM_CWMIN, val);
 514
 515        val = mt76_rr(dev, MT_WMM_CWMAX);
 516        val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid));
 517        val |= cw_max << MT_WMM_CWMAX_SHIFT(qid);
 518        mt76_wr(dev, MT_WMM_CWMAX, val);
 519
 520        return 0;
 521}
 522EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
 523
 524void mt76x02_set_tx_ackto(struct mt76x02_dev *dev)
 525{
 526        u8 ackto, sifs, slottime = dev->slottime;
 527
 528        /* As defined by IEEE 802.11-2007 17.3.8.6 */
 529        slottime += 3 * dev->coverage_class;
 530        mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
 531                       MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
 532
 533        sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG,
 534                              MT_XIFS_TIME_CFG_OFDM_SIFS);
 535
 536        ackto = slottime + sifs;
 537        mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG,
 538                       MT_TX_TIMEOUT_CFG_ACKTO, ackto);
 539}
 540EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
 541
 542void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
 543                                s16 coverage_class)
 544{
 545        struct mt76x02_dev *dev = hw->priv;
 546
 547        mutex_lock(&dev->mt76.mutex);
 548        dev->coverage_class = coverage_class;
 549        mt76x02_set_tx_ackto(dev);
 550        mutex_unlock(&dev->mt76.mutex);
 551}
 552EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
 553
 554int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
 555{
 556        struct mt76x02_dev *dev = hw->priv;
 557
 558        if (val != ~0 && val > 0xffff)
 559                return -EINVAL;
 560
 561        mutex_lock(&dev->mt76.mutex);
 562        mt76x02_mac_set_rts_thresh(dev, val);
 563        mutex_unlock(&dev->mt76.mutex);
 564
 565        return 0;
 566}
 567EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
 568
 569void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
 570                                 struct ieee80211_vif *vif,
 571                                 struct ieee80211_sta *sta)
 572{
 573        struct mt76x02_dev *dev = hw->priv;
 574        struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 575        struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates);
 576        struct ieee80211_tx_rate rate = {};
 577
 578        if (!rates)
 579                return;
 580
 581        rate.idx = rates->rate[0].idx;
 582        rate.flags = rates->rate[0].flags;
 583        mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate);
 584}
 585EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
 586
 587void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len)
 588{
 589        int hdrlen;
 590
 591        if (!len)
 592                return;
 593
 594        hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 595        memmove(skb->data + len, skb->data, hdrlen);
 596        skb_pull(skb, len);
 597}
 598EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
 599
 600void mt76x02_sw_scan_complete(struct ieee80211_hw *hw,
 601                              struct ieee80211_vif *vif)
 602{
 603        struct mt76x02_dev *dev = hw->priv;
 604
 605        clear_bit(MT76_SCANNING, &dev->mt76.state);
 606        if (dev->cal.gain_init_done) {
 607                /* Restore AGC gain and resume calibration after scanning. */
 608                dev->cal.low_gain = -1;
 609                ieee80211_queue_delayed_work(hw, &dev->cal_work, 0);
 610        }
 611}
 612EXPORT_SYMBOL_GPL(mt76x02_sw_scan_complete);
 613
 614void mt76x02_sta_ps(struct mt76_dev *mdev, struct ieee80211_sta *sta,
 615                    bool ps)
 616{
 617        struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 618        struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 619        int idx = msta->wcid.idx;
 620
 621        mt76_stop_tx_queues(&dev->mt76, sta, true);
 622        if (mt76_is_mmio(mdev))
 623                mt76x02_mac_wcid_set_drop(dev, idx, ps);
 624}
 625EXPORT_SYMBOL_GPL(mt76x02_sta_ps);
 626
 627void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
 628                              struct ieee80211_vif *vif,
 629                              struct ieee80211_bss_conf *info,
 630                              u32 changed)
 631{
 632        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 633        struct mt76x02_dev *dev = hw->priv;
 634
 635        mutex_lock(&dev->mt76.mutex);
 636
 637        if (changed & BSS_CHANGED_BSSID)
 638                mt76x02_mac_set_bssid(dev, mvif->idx, info->bssid);
 639
 640        if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
 641                mt76x02_mac_set_tx_protection(dev, info->use_cts_prot,
 642                                              info->ht_operation_mode);
 643
 644        if (changed & BSS_CHANGED_BEACON_INT) {
 645                mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
 646                               MT_BEACON_TIME_CFG_INTVAL,
 647                               info->beacon_int << 4);
 648                dev->mt76.beacon_int = info->beacon_int;
 649        }
 650
 651        if (changed & BSS_CHANGED_BEACON_ENABLED)
 652                mt76x02_mac_set_beacon_enable(dev, vif, info->enable_beacon);
 653
 654        if (changed & BSS_CHANGED_ERP_PREAMBLE)
 655                mt76x02_mac_set_short_preamble(dev, info->use_short_preamble);
 656
 657        if (changed & BSS_CHANGED_ERP_SLOT) {
 658                int slottime = info->use_short_slot ? 9 : 20;
 659
 660                dev->slottime = slottime;
 661                mt76x02_set_tx_ackto(dev);
 662        }
 663
 664        mutex_unlock(&dev->mt76.mutex);
 665}
 666EXPORT_SYMBOL_GPL(mt76x02_bss_info_changed);
 667
 668void mt76x02_config_mac_addr_list(struct mt76x02_dev *dev)
 669{
 670        struct ieee80211_hw *hw = mt76_hw(dev);
 671        struct wiphy *wiphy = hw->wiphy;
 672        int i;
 673
 674        for (i = 0; i < ARRAY_SIZE(dev->macaddr_list); i++) {
 675                u8 *addr = dev->macaddr_list[i].addr;
 676
 677                memcpy(addr, dev->mt76.macaddr, ETH_ALEN);
 678
 679                if (!i)
 680                        continue;
 681
 682                addr[0] |= BIT(1);
 683                addr[0] ^= ((i - 1) << 2);
 684        }
 685        wiphy->addresses = dev->macaddr_list;
 686        wiphy->n_addresses = ARRAY_SIZE(dev->macaddr_list);
 687}
 688EXPORT_SYMBOL_GPL(mt76x02_config_mac_addr_list);
 689
 690MODULE_LICENSE("Dual BSD/GPL");
 691