linux/drivers/net/wireless/mediatek/mt76/mt76x02_util.c
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   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
  34struct 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};
  48EXPORT_SYMBOL_GPL(mt76x02_rates);
  49
  50static 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
  64static 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
  78static void
  79mt76x02_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
 100static int
 101mt76x02_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
 117static void
 118mt76x02_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
 130void 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->mt76.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        wiphy->interface_modes =
 144                BIT(NL80211_IFTYPE_STATION) |
 145                BIT(NL80211_IFTYPE_AP) |
 146#ifdef CONFIG_MAC80211_MESH
 147                BIT(NL80211_IFTYPE_MESH_POINT) |
 148#endif
 149                BIT(NL80211_IFTYPE_ADHOC);
 150
 151        if (mt76_is_usb(dev)) {
 152                hw->extra_tx_headroom += sizeof(struct mt76x02_txwi) +
 153                                         MT_DMA_HDR_LEN;
 154        } else {
 155                INIT_DELAYED_WORK(&dev->wdt_work, mt76x02_wdt_work);
 156
 157                mt76x02_dfs_init_detector(dev);
 158
 159                wiphy->reg_notifier = mt76x02_regd_notifier;
 160                wiphy->iface_combinations = mt76x02_if_comb;
 161                wiphy->n_iface_combinations = ARRAY_SIZE(mt76x02_if_comb);
 162                wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
 163
 164                /* init led callbacks */
 165                if (IS_ENABLED(CONFIG_MT76_LEDS)) {
 166                        dev->mt76.led_cdev.brightness_set =
 167                                        mt76x02_led_set_brightness;
 168                        dev->mt76.led_cdev.blink_set = mt76x02_led_set_blink;
 169                }
 170        }
 171
 172        wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
 173
 174        hw->sta_data_size = sizeof(struct mt76x02_sta);
 175        hw->vif_data_size = sizeof(struct mt76x02_vif);
 176
 177        ieee80211_hw_set(hw, SUPPORTS_HT_CCK_RATES);
 178        ieee80211_hw_set(hw, SUPPORTS_REORDERING_BUFFER);
 179
 180        dev->mt76.global_wcid.idx = 255;
 181        dev->mt76.global_wcid.hw_key_idx = -1;
 182        dev->slottime = 9;
 183
 184        if (is_mt76x2(dev)) {
 185                dev->mt76.sband_2g.sband.ht_cap.cap |=
 186                                IEEE80211_HT_CAP_LDPC_CODING;
 187                dev->mt76.sband_5g.sband.ht_cap.cap |=
 188                                IEEE80211_HT_CAP_LDPC_CODING;
 189                dev->mt76.chainmask = 0x202;
 190                dev->mt76.antenna_mask = 3;
 191        } else {
 192                dev->mt76.chainmask = 0x101;
 193                dev->mt76.antenna_mask = 1;
 194        }
 195}
 196EXPORT_SYMBOL_GPL(mt76x02_init_device);
 197
 198void mt76x02_configure_filter(struct ieee80211_hw *hw,
 199                              unsigned int changed_flags,
 200                              unsigned int *total_flags, u64 multicast)
 201{
 202        struct mt76x02_dev *dev = hw->priv;
 203        u32 flags = 0;
 204
 205#define MT76_FILTER(_flag, _hw) do { \
 206                flags |= *total_flags & FIF_##_flag;                    \
 207                dev->mt76.rxfilter &= ~(_hw);                           \
 208                dev->mt76.rxfilter |= !(flags & FIF_##_flag) * (_hw);   \
 209        } while (0)
 210
 211        mutex_lock(&dev->mt76.mutex);
 212
 213        dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_OTHER_BSS;
 214
 215        MT76_FILTER(FCSFAIL, MT_RX_FILTR_CFG_CRC_ERR);
 216        MT76_FILTER(PLCPFAIL, MT_RX_FILTR_CFG_PHY_ERR);
 217        MT76_FILTER(CONTROL, MT_RX_FILTR_CFG_ACK |
 218                             MT_RX_FILTR_CFG_CTS |
 219                             MT_RX_FILTR_CFG_CFEND |
 220                             MT_RX_FILTR_CFG_CFACK |
 221                             MT_RX_FILTR_CFG_BA |
 222                             MT_RX_FILTR_CFG_CTRL_RSV);
 223        MT76_FILTER(PSPOLL, MT_RX_FILTR_CFG_PSPOLL);
 224
 225        *total_flags = flags;
 226        mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
 227
 228        mutex_unlock(&dev->mt76.mutex);
 229}
 230EXPORT_SYMBOL_GPL(mt76x02_configure_filter);
 231
 232int mt76x02_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 233                    struct ieee80211_sta *sta)
 234{
 235        struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 236        struct mt76x02_sta *msta = (struct mt76x02_sta *)sta->drv_priv;
 237        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 238        int idx = 0;
 239
 240        memset(msta, 0, sizeof(*msta));
 241
 242        idx = mt76_wcid_alloc(dev->mt76.wcid_mask, ARRAY_SIZE(dev->mt76.wcid));
 243        if (idx < 0)
 244                return -ENOSPC;
 245
 246        msta->vif = mvif;
 247        msta->wcid.sta = 1;
 248        msta->wcid.idx = idx;
 249        msta->wcid.hw_key_idx = -1;
 250        mt76x02_mac_wcid_setup(dev, idx, mvif->idx, sta->addr);
 251        mt76x02_mac_wcid_set_drop(dev, idx, false);
 252
 253        if (vif->type == NL80211_IFTYPE_AP)
 254                set_bit(MT_WCID_FLAG_CHECK_PS, &msta->wcid.flags);
 255
 256        return 0;
 257}
 258EXPORT_SYMBOL_GPL(mt76x02_sta_add);
 259
 260void mt76x02_sta_remove(struct mt76_dev *mdev, struct ieee80211_vif *vif,
 261                        struct ieee80211_sta *sta)
 262{
 263        struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);
 264        struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
 265        int idx = wcid->idx;
 266
 267        mt76x02_mac_wcid_set_drop(dev, idx, true);
 268        mt76x02_mac_wcid_setup(dev, idx, 0, NULL);
 269}
 270EXPORT_SYMBOL_GPL(mt76x02_sta_remove);
 271
 272static void
 273mt76x02_vif_init(struct mt76x02_dev *dev, struct ieee80211_vif *vif,
 274                 unsigned int idx)
 275{
 276        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 277        struct mt76_txq *mtxq;
 278
 279        memset(mvif, 0, sizeof(*mvif));
 280
 281        mvif->idx = idx;
 282        mvif->group_wcid.idx = MT_VIF_WCID(idx);
 283        mvif->group_wcid.hw_key_idx = -1;
 284        mtxq = (struct mt76_txq *) vif->txq->drv_priv;
 285        mtxq->wcid = &mvif->group_wcid;
 286
 287        mt76_txq_init(&dev->mt76, vif->txq);
 288}
 289
 290int
 291mt76x02_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
 292{
 293        struct mt76x02_dev *dev = hw->priv;
 294        unsigned int idx = 0;
 295
 296        /* Allow to change address in HW if we create first interface. */
 297        if (!dev->vif_mask &&
 298            (((vif->addr[0] ^ dev->mt76.macaddr[0]) & ~GENMASK(4, 1)) ||
 299             memcmp(vif->addr + 1, dev->mt76.macaddr + 1, ETH_ALEN - 1)))
 300                mt76x02_mac_setaddr(dev, vif->addr);
 301
 302        if (vif->addr[0] & BIT(1))
 303                idx = 1 + (((dev->mt76.macaddr[0] ^ vif->addr[0]) >> 2) & 7);
 304
 305        /*
 306         * Client mode typically only has one configurable BSSID register,
 307         * which is used for bssidx=0. This is linked to the MAC address.
 308         * Since mac80211 allows changing interface types, and we cannot
 309         * force the use of the primary MAC address for a station mode
 310         * interface, we need some other way of configuring a per-interface
 311         * remote BSSID.
 312         * The hardware provides an AP-Client feature, where bssidx 0-7 are
 313         * used for AP mode and bssidx 8-15 for client mode.
 314         * We shift the station interface bss index by 8 to force the
 315         * hardware to recognize the BSSID.
 316         * The resulting bssidx mismatch for unicast frames is ignored by hw.
 317         */
 318        if (vif->type == NL80211_IFTYPE_STATION)
 319                idx += 8;
 320
 321        if (dev->vif_mask & BIT(idx))
 322                return -EBUSY;
 323
 324        dev->vif_mask |= BIT(idx);
 325
 326        mt76x02_vif_init(dev, vif, idx);
 327        return 0;
 328}
 329EXPORT_SYMBOL_GPL(mt76x02_add_interface);
 330
 331void mt76x02_remove_interface(struct ieee80211_hw *hw,
 332                              struct ieee80211_vif *vif)
 333{
 334        struct mt76x02_dev *dev = hw->priv;
 335        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 336
 337        mt76_txq_remove(&dev->mt76, vif->txq);
 338        dev->vif_mask &= ~BIT(mvif->idx);
 339}
 340EXPORT_SYMBOL_GPL(mt76x02_remove_interface);
 341
 342int mt76x02_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 343                         struct ieee80211_ampdu_params *params)
 344{
 345        enum ieee80211_ampdu_mlme_action action = params->action;
 346        struct ieee80211_sta *sta = params->sta;
 347        struct mt76x02_dev *dev = hw->priv;
 348        struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv;
 349        struct ieee80211_txq *txq = sta->txq[params->tid];
 350        u16 tid = params->tid;
 351        u16 *ssn = &params->ssn;
 352        struct mt76_txq *mtxq;
 353
 354        if (!txq)
 355                return -EINVAL;
 356
 357        mtxq = (struct mt76_txq *)txq->drv_priv;
 358
 359        switch (action) {
 360        case IEEE80211_AMPDU_RX_START:
 361                mt76_rx_aggr_start(&dev->mt76, &msta->wcid, tid,
 362                                   *ssn, params->buf_size);
 363                mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));
 364                break;
 365        case IEEE80211_AMPDU_RX_STOP:
 366                mt76_rx_aggr_stop(&dev->mt76, &msta->wcid, tid);
 367                mt76_clear(dev, MT_WCID_ADDR(msta->wcid.idx) + 4,
 368                           BIT(16 + tid));
 369                break;
 370        case IEEE80211_AMPDU_TX_OPERATIONAL:
 371                mtxq->aggr = true;
 372                mtxq->send_bar = false;
 373                ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
 374                break;
 375        case IEEE80211_AMPDU_TX_STOP_FLUSH:
 376        case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
 377                mtxq->aggr = false;
 378                ieee80211_send_bar(vif, sta->addr, tid, mtxq->agg_ssn);
 379                break;
 380        case IEEE80211_AMPDU_TX_START:
 381                mtxq->agg_ssn = IEEE80211_SN_TO_SEQ(*ssn);
 382                ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 383                break;
 384        case IEEE80211_AMPDU_TX_STOP_CONT:
 385                mtxq->aggr = false;
 386                ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
 387                break;
 388        }
 389
 390        return 0;
 391}
 392EXPORT_SYMBOL_GPL(mt76x02_ampdu_action);
 393
 394int mt76x02_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 395                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 396                    struct ieee80211_key_conf *key)
 397{
 398        struct mt76x02_dev *dev = hw->priv;
 399        struct mt76x02_vif *mvif = (struct mt76x02_vif *)vif->drv_priv;
 400        struct mt76x02_sta *msta;
 401        struct mt76_wcid *wcid;
 402        int idx = key->keyidx;
 403        int ret;
 404
 405        /* fall back to sw encryption for unsupported ciphers */
 406        switch (key->cipher) {
 407        case WLAN_CIPHER_SUITE_WEP40:
 408        case WLAN_CIPHER_SUITE_WEP104:
 409        case WLAN_CIPHER_SUITE_TKIP:
 410        case WLAN_CIPHER_SUITE_CCMP:
 411                break;
 412        default:
 413                return -EOPNOTSUPP;
 414        }
 415
 416        /*
 417         * The hardware does not support per-STA RX GTK, fall back
 418         * to software mode for these.
 419         */
 420        if ((vif->type == NL80211_IFTYPE_ADHOC ||
 421             vif->type == NL80211_IFTYPE_MESH_POINT) &&
 422            (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
 423             key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
 424            !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 425                return -EOPNOTSUPP;
 426
 427        /*
 428         * In USB AP mode, broadcast/multicast frames are setup in beacon
 429         * data registers and sent via HW beacons engine, they require to
 430         * be already encrypted.
 431         */
 432        if (mt76_is_usb(dev) &&
 433            vif->type == NL80211_IFTYPE_AP &&
 434            !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
 435                return -EOPNOTSUPP;
 436
 437        msta = sta ? (struct mt76x02_sta *) sta->drv_priv : NULL;
 438        wcid = msta ? &msta->wcid : &mvif->group_wcid;
 439
 440        if (cmd == SET_KEY) {
 441                key->hw_key_idx = wcid->idx;
 442                wcid->hw_key_idx = idx;
 443                if (key->flags & IEEE80211_KEY_FLAG_RX_MGMT) {
 444                        key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
 445                        wcid->sw_iv = true;
 446                }
 447        } else {
 448                if (idx == wcid->hw_key_idx) {
 449                        wcid->hw_key_idx = -1;
 450                        wcid->sw_iv = false;
 451                }
 452
 453                key = NULL;
 454        }
 455        mt76_wcid_key_setup(&dev->mt76, wcid, key);
 456
 457        if (!msta) {
 458                if (key || wcid->hw_key_idx == idx) {
 459                        ret = mt76x02_mac_wcid_set_key(dev, wcid->idx, key);
 460                        if (ret)
 461                                return ret;
 462                }
 463
 464                return mt76x02_mac_shared_key_setup(dev, mvif->idx, idx, key);
 465        }
 466
 467        return mt76x02_mac_wcid_set_key(dev, msta->wcid.idx, key);
 468}
 469EXPORT_SYMBOL_GPL(mt76x02_set_key);
 470
 471int mt76x02_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 472                    u16 queue, const struct ieee80211_tx_queue_params *params)
 473{
 474        struct mt76x02_dev *dev = hw->priv;
 475        u8 cw_min = 5, cw_max = 10, qid;
 476        u32 val;
 477
 478        qid = dev->mt76.q_tx[queue].q->hw_idx;
 479
 480        if (params->cw_min)
 481                cw_min = fls(params->cw_min);
 482        if (params->cw_max)
 483                cw_max = fls(params->cw_max);
 484
 485        val = FIELD_PREP(MT_EDCA_CFG_TXOP, params->txop) |
 486              FIELD_PREP(MT_EDCA_CFG_AIFSN, params->aifs) |
 487              FIELD_PREP(MT_EDCA_CFG_CWMIN, cw_min) |
 488              FIELD_PREP(MT_EDCA_CFG_CWMAX, cw_max);
 489        mt76_wr(dev, MT_EDCA_CFG_AC(qid), val);
 490
 491        val = mt76_rr(dev, MT_WMM_TXOP(qid));
 492        val &= ~(MT_WMM_TXOP_MASK << MT_WMM_TXOP_SHIFT(qid));
 493        val |= params->txop << MT_WMM_TXOP_SHIFT(qid);
 494        mt76_wr(dev, MT_WMM_TXOP(qid), val);
 495
 496        val = mt76_rr(dev, MT_WMM_AIFSN);
 497        val &= ~(MT_WMM_AIFSN_MASK << MT_WMM_AIFSN_SHIFT(qid));
 498        val |= params->aifs << MT_WMM_AIFSN_SHIFT(qid);
 499        mt76_wr(dev, MT_WMM_AIFSN, val);
 500
 501        val = mt76_rr(dev, MT_WMM_CWMIN);
 502        val &= ~(MT_WMM_CWMIN_MASK << MT_WMM_CWMIN_SHIFT(qid));
 503        val |= cw_min << MT_WMM_CWMIN_SHIFT(qid);
 504        mt76_wr(dev, MT_WMM_CWMIN, val);
 505
 506        val = mt76_rr(dev, MT_WMM_CWMAX);
 507        val &= ~(MT_WMM_CWMAX_MASK << MT_WMM_CWMAX_SHIFT(qid));
 508        val |= cw_max << MT_WMM_CWMAX_SHIFT(qid);
 509        mt76_wr(dev, MT_WMM_CWMAX, val);
 510
 511        return 0;
 512}
 513EXPORT_SYMBOL_GPL(mt76x02_conf_tx);
 514
 515void mt76x02_set_tx_ackto(struct mt76x02_dev *dev)
 516{
 517        u8 ackto, sifs, slottime = dev->slottime;
 518
 519        /* As defined by IEEE 802.11-2007 17.3.8.6 */
 520        slottime += 3 * dev->coverage_class;
 521        mt76_rmw_field(dev, MT_BKOFF_SLOT_CFG,
 522                       MT_BKOFF_SLOT_CFG_SLOTTIME, slottime);
 523
 524        sifs = mt76_get_field(dev, MT_XIFS_TIME_CFG,
 525                              MT_XIFS_TIME_CFG_OFDM_SIFS);
 526
 527        ackto = slottime + sifs;
 528        mt76_rmw_field(dev, MT_TX_TIMEOUT_CFG,
 529                       MT_TX_TIMEOUT_CFG_ACKTO, ackto);
 530}
 531EXPORT_SYMBOL_GPL(mt76x02_set_tx_ackto);
 532
 533void mt76x02_set_coverage_class(struct ieee80211_hw *hw,
 534                                s16 coverage_class)
 535{
 536        struct mt76x02_dev *dev = hw->priv;
 537
 538        mutex_lock(&dev->mt76.mutex);
 539        dev->coverage_class = coverage_class;
 540        mt76x02_set_tx_ackto(dev);
 541        mutex_unlock(&dev->mt76.mutex);
 542}
 543EXPORT_SYMBOL_GPL(mt76x02_set_coverage_class);
 544
 545int mt76x02_set_rts_threshold(struct ieee80211_hw *hw, u32 val)
 546{
 547        struct mt76x02_dev *dev = hw->priv;
 548
 549        if (val != ~0 && val > 0xffff)
 550                return -EINVAL;
 551
 552        mutex_lock(&dev->mt76.mutex);
 553        mt76x02_mac_set_rts_thresh(dev, val);
 554        mutex_unlock(&dev->mt76.mutex);
 555
 556        return 0;
 557}
 558EXPORT_SYMBOL_GPL(mt76x02_set_rts_threshold);
 559
 560void mt76x02_sta_rate_tbl_update(struct ieee80211_hw *hw,
 561                                struct ieee80211_vif *vif,
 562                                struct ieee80211_sta *sta)
 563{
 564        struct mt76x02_dev *dev = hw->priv;
 565        struct mt76x02_sta *msta = (struct mt76x02_sta *) sta->drv_priv;
 566        struct ieee80211_sta_rates *rates = rcu_dereference(sta->rates);
 567        struct ieee80211_tx_rate rate = {};
 568
 569        if (!rates)
 570                return;
 571
 572        rate.idx = rates->rate[0].idx;
 573        rate.flags = rates->rate[0].flags;
 574        mt76x02_mac_wcid_set_rate(dev, &msta->wcid, &rate);
 575}
 576EXPORT_SYMBOL_GPL(mt76x02_sta_rate_tbl_update);
 577
 578void mt76x02_remove_hdr_pad(struct sk_buff *skb, int len)
 579{
 580        int hdrlen;
 581
 582        if (!len)
 583                return;
 584
 585        hdrlen = ieee80211_get_hdrlen_from_skb(skb);
 586        memmove(skb->data + len, skb->data, hdrlen);
 587        skb_pull(skb, len);
 588}
 589EXPORT_SYMBOL_GPL(mt76x02_remove_hdr_pad);
 590
 591void mt76x02_sw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 592                     const u8 *mac)
 593{
 594        struct mt76x02_dev *dev = hw->priv;
 595
 596        set_bit(MT76_SCANNING, &dev->mt76.state);
 597}
 598EXPORT_SYMBOL_GPL(mt76x02_sw_scan);
 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(dev))
 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