drivers/net/wireless/ath/ath9k/htc_drv_main.c

   1 /*
   2  * Copyright (c) 2010-2011 Atheros Communications Inc.
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #include "htc.h"
  18
  19 /*************/
  20 /* Utilities */
  21 /*************/
  22
  23 /* HACK Alert: Use 11NG for 2.4, use 11NA for 5 */
  24 static enum htc_phymode ath9k_htc_get_curmode(struct ath9k_htc_priv *priv,
  25                                               struct ath9k_channel *ichan)
  26 {
  27         enum htc_phymode mode;
  28
  29         mode = -EINVAL;
  30
  31         switch (ichan->chanmode) {
  32         case CHANNEL_G:
  33         case CHANNEL_G_HT20:
  34         case CHANNEL_G_HT40PLUS:
  35         case CHANNEL_G_HT40MINUS:
  36                 mode = HTC_MODE_11NG;
  37                 break;
  38         case CHANNEL_A:
  39         case CHANNEL_A_HT20:
  40         case CHANNEL_A_HT40PLUS:
  41         case CHANNEL_A_HT40MINUS:
  42                 mode = HTC_MODE_11NA;
  43                 break;
  44         default:
  45                 break;
  46         }
  47
  48         WARN_ON(mode < 0);
  49
  50         return mode;
  51 }
  52
  53 bool ath9k_htc_setpower(struct ath9k_htc_priv *priv,
  54                         enum ath9k_power_mode mode)
  55 {
  56         bool ret;
  57
  58         mutex_lock(&priv->htc_pm_lock);
  59         ret = ath9k_hw_setpower(priv->ah, mode);
  60         mutex_unlock(&priv->htc_pm_lock);
  61
  62         return ret;
  63 }
  64
  65 void ath9k_htc_ps_wakeup(struct ath9k_htc_priv *priv)
  66 {
  67         mutex_lock(&priv->htc_pm_lock);
  68         if (++priv->ps_usecount != 1)
  69                 goto unlock;
  70         ath9k_hw_setpower(priv->ah, ATH9K_PM_AWAKE);
  71
  72 unlock:
  73         mutex_unlock(&priv->htc_pm_lock);
  74 }
  75
  76 void ath9k_htc_ps_restore(struct ath9k_htc_priv *priv)
  77 {
  78         mutex_lock(&priv->htc_pm_lock);
  79         if (--priv->ps_usecount != 0)
  80                 goto unlock;
  81
  82         if (priv->ps_idle)
  83                 ath9k_hw_setpower(priv->ah, ATH9K_PM_FULL_SLEEP);
  84         else if (priv->ps_enabled)
  85                 ath9k_hw_setpower(priv->ah, ATH9K_PM_NETWORK_SLEEP);
  86
  87 unlock:
  88         mutex_unlock(&priv->htc_pm_lock);
  89 }
  90
  91 void ath9k_ps_work(struct work_struct *work)
  92 {
  93         struct ath9k_htc_priv *priv =
  94                 container_of(work, struct ath9k_htc_priv,
  95                              ps_work);
  96         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
  97
  98         /* The chip wakes up after receiving the first beacon
  99            while network sleep is enabled. For the driver to
 100            be in sync with the hw, set the chip to awake and
 101            only then set it to sleep.
 102          */
 103         ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
 104 }
 105
 106 static void ath9k_htc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 107 {
 108         struct ath9k_htc_priv *priv = data;
 109         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 110
 111         if ((vif->type == NL80211_IFTYPE_AP) && bss_conf->enable_beacon)
 112                 priv->reconfig_beacon = true;
 113
 114         if (bss_conf->assoc) {
 115                 priv->rearm_ani = true;
 116                 priv->reconfig_beacon = true;
 117         }
 118 }
 119
 120 static void ath9k_htc_vif_reconfig(struct ath9k_htc_priv *priv)
 121 {
 122         priv->rearm_ani = false;
 123         priv->reconfig_beacon = false;
 124
 125         ieee80211_iterate_active_interfaces_atomic(priv->hw,
 126                                                    ath9k_htc_vif_iter, priv);
 127         if (priv->rearm_ani)
 128                 ath9k_htc_start_ani(priv);
 129
 130         if (priv->reconfig_beacon) {
 131                 ath9k_htc_ps_wakeup(priv);
 132                 ath9k_htc_beacon_reconfig(priv);
 133                 ath9k_htc_ps_restore(priv);
 134         }
 135 }
 136
 137 static void ath9k_htc_bssid_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
 138 {
 139         struct ath9k_vif_iter_data *iter_data = data;
 140         int i;
 141
 142         for (i = 0; i < ETH_ALEN; i++)
 143                 iter_data->mask[i] &= ~(iter_data->hw_macaddr[i] ^ mac[i]);
 144 }
 145
 146 static void ath9k_htc_set_bssid_mask(struct ath9k_htc_priv *priv,
 147                                      struct ieee80211_vif *vif)
 148 {
 149         struct ath_common *common = ath9k_hw_common(priv->ah);
 150         struct ath9k_vif_iter_data iter_data;
 151
 152         /*
 153          * Use the hardware MAC address as reference, the hardware uses it
 154          * together with the BSSID mask when matching addresses.
 155          */
 156         iter_data.hw_macaddr = common->macaddr;
 157         memset(&iter_data.mask, 0xff, ETH_ALEN);
 158
 159         if (vif)
 160                 ath9k_htc_bssid_iter(&iter_data, vif->addr, vif);
 161
 162         /* Get list of all active MAC addresses */
 163         ieee80211_iterate_active_interfaces_atomic(priv->hw, ath9k_htc_bssid_iter,
 164                                                    &iter_data);
 165
 166         memcpy(common->bssidmask, iter_data.mask, ETH_ALEN);
 167         ath_hw_setbssidmask(common);
 168 }
 169
 170 static void ath9k_htc_set_opmode(struct ath9k_htc_priv *priv)
 171 {
 172         if (priv->num_ibss_vif)
 173                 priv->ah->opmode = NL80211_IFTYPE_ADHOC;
 174         else if (priv->num_ap_vif)
 175                 priv->ah->opmode = NL80211_IFTYPE_AP;
 176         else
 177                 priv->ah->opmode = NL80211_IFTYPE_STATION;
 178
 179         ath9k_hw_setopmode(priv->ah);
 180 }
 181
 182 void ath9k_htc_reset(struct ath9k_htc_priv *priv)
 183 {
 184         struct ath_hw *ah = priv->ah;
 185         struct ath_common *common = ath9k_hw_common(ah);
 186         struct ieee80211_channel *channel = priv->hw->conf.channel;
 187         struct ath9k_hw_cal_data *caldata = NULL;
 188         enum htc_phymode mode;
 189         __be16 htc_mode;
 190         u8 cmd_rsp;
 191         int ret;
 192
 193         mutex_lock(&priv->mutex);
 194         ath9k_htc_ps_wakeup(priv);
 195
 196         ath9k_htc_stop_ani(priv);
 197         ieee80211_stop_queues(priv->hw);
 198
 199         del_timer_sync(&priv->tx.cleanup_timer);
 200         ath9k_htc_tx_drain(priv);
 201
 202         WMI_CMD(WMI_DISABLE_INTR_CMDID);
 203         WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
 204         WMI_CMD(WMI_STOP_RECV_CMDID);
 205
 206         ath9k_wmi_event_drain(priv);
 207
 208         caldata = &priv->caldata;
 209         ret = ath9k_hw_reset(ah, ah->curchan, caldata, false);
 210         if (ret) {
 211                 ath_err(common,
 212                         "Unable to reset device (%u Mhz) reset status %d\n",
 213                         channel->center_freq, ret);
 214         }
 215
 216         ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
 217                                &priv->curtxpow);
 218
 219         WMI_CMD(WMI_START_RECV_CMDID);
 220         ath9k_host_rx_init(priv);
 221
 222         mode = ath9k_htc_get_curmode(priv, ah->curchan);
 223         htc_mode = cpu_to_be16(mode);
 224         WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
 225
 226         WMI_CMD(WMI_ENABLE_INTR_CMDID);
 227         htc_start(priv->htc);
 228         ath9k_htc_vif_reconfig(priv);
 229         ieee80211_wake_queues(priv->hw);
 230
 231         mod_timer(&priv->tx.cleanup_timer,
 232                   jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
 233
 234         ath9k_htc_ps_restore(priv);
 235         mutex_unlock(&priv->mutex);
 236 }
 237
 238 static int ath9k_htc_set_channel(struct ath9k_htc_priv *priv,
 239                                  struct ieee80211_hw *hw,
 240                                  struct ath9k_channel *hchan)
 241 {
 242         struct ath_hw *ah = priv->ah;
 243         struct ath_common *common = ath9k_hw_common(ah);
 244         struct ieee80211_conf *conf = &common->hw->conf;
 245         bool fastcc;
 246         struct ieee80211_channel *channel = hw->conf.channel;
 247         struct ath9k_hw_cal_data *caldata = NULL;
 248         enum htc_phymode mode;
 249         __be16 htc_mode;
 250         u8 cmd_rsp;
 251         int ret;
 252
 253         if (priv->op_flags & OP_INVALID)
 254                 return -EIO;
 255
 256         fastcc = !!(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL);
 257
 258         ath9k_htc_ps_wakeup(priv);
 259
 260         del_timer_sync(&priv->tx.cleanup_timer);
 261         ath9k_htc_tx_drain(priv);
 262
 263         WMI_CMD(WMI_DISABLE_INTR_CMDID);
 264         WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
 265         WMI_CMD(WMI_STOP_RECV_CMDID);
 266
 267         ath9k_wmi_event_drain(priv);
 268
 269         ath_dbg(common, ATH_DBG_CONFIG,
 270                 "(%u MHz) -> (%u MHz), HT: %d, HT40: %d fastcc: %d\n",
 271                 priv->ah->curchan->channel,
 272                 channel->center_freq, conf_is_ht(conf), conf_is_ht40(conf),
 273                 fastcc);
 274
 275         if (!fastcc)
 276                 caldata = &priv->caldata;
 277
 278         ret = ath9k_hw_reset(ah, hchan, caldata, fastcc);
 279         if (ret) {
 280                 ath_err(common,
 281                         "Unable to reset channel (%u Mhz) reset status %d\n",
 282                         channel->center_freq, ret);
 283                 goto err;
 284         }
 285
 286         ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
 287                                &priv->curtxpow);
 288
 289         WMI_CMD(WMI_START_RECV_CMDID);
 290         if (ret)
 291                 goto err;
 292
 293         ath9k_host_rx_init(priv);
 294
 295         mode = ath9k_htc_get_curmode(priv, hchan);
 296         htc_mode = cpu_to_be16(mode);
 297         WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
 298         if (ret)
 299                 goto err;
 300
 301         WMI_CMD(WMI_ENABLE_INTR_CMDID);
 302         if (ret)
 303                 goto err;
 304
 305         htc_start(priv->htc);
 306
 307         if (!(priv->op_flags & OP_SCANNING) &&
 308             !(hw->conf.flags & IEEE80211_CONF_OFFCHANNEL))
 309                 ath9k_htc_vif_reconfig(priv);
 310
 311         mod_timer(&priv->tx.cleanup_timer,
 312                   jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
 313
 314 err:
 315         ath9k_htc_ps_restore(priv);
 316         return ret;
 317 }
 318
 319 /*
 320  * Monitor mode handling is a tad complicated because the firmware requires
 321  * an interface to be created exclusively, while mac80211 doesn't associate
 322  * an interface with the mode.
 323  *
 324  * So, for now, only one monitor interface can be configured.
 325  */
 326 static void __ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
 327 {
 328         struct ath_common *common = ath9k_hw_common(priv->ah);
 329         struct ath9k_htc_target_vif hvif;
 330         int ret = 0;
 331         u8 cmd_rsp;
 332
 333         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
 334         memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
 335         hvif.index = priv->mon_vif_idx;
 336         WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
 337         if (ret) {
 338                 ath_err(common, "Unable to remove monitor interface at idx: %d\n",
 339                         priv->mon_vif_idx);
 340         }
 341
 342         priv->nvifs--;
 343         priv->vif_slot &= ~(1 << priv->mon_vif_idx);
 344 }
 345
 346 static int ath9k_htc_add_monitor_interface(struct ath9k_htc_priv *priv)
 347 {
 348         struct ath_common *common = ath9k_hw_common(priv->ah);
 349         struct ath9k_htc_target_vif hvif;
 350         struct ath9k_htc_target_sta tsta;
 351         int ret = 0, sta_idx;
 352         u8 cmd_rsp;
 353
 354         if ((priv->nvifs >= ATH9K_HTC_MAX_VIF) ||
 355             (priv->nstations >= ATH9K_HTC_MAX_STA)) {
 356                 ret = -ENOBUFS;
 357                 goto err_vif;
 358         }
 359
 360         sta_idx = ffz(priv->sta_slot);
 361         if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA)) {
 362                 ret = -ENOBUFS;
 363                 goto err_vif;
 364         }
 365
 366         /*
 367          * Add an interface.
 368          */
 369         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
 370         memcpy(&hvif.myaddr, common->macaddr, ETH_ALEN);
 371
 372         hvif.opmode = HTC_M_MONITOR;
 373         hvif.index = ffz(priv->vif_slot);
 374
 375         WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
 376         if (ret)
 377                 goto err_vif;
 378
 379         /*
 380          * Assign the monitor interface index as a special case here.
 381          * This is needed when the interface is brought down.
 382          */
 383         priv->mon_vif_idx = hvif.index;
 384         priv->vif_slot |= (1 << hvif.index);
 385
 386         /*
 387          * Set the hardware mode to monitor only if there are no
 388          * other interfaces.
 389          */
 390         if (!priv->nvifs)
 391                 priv->ah->opmode = NL80211_IFTYPE_MONITOR;
 392
 393         priv->nvifs++;
 394
 395         /*
 396          * Associate a station with the interface for packet injection.
 397          */
 398         memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
 399
 400         memcpy(&tsta.macaddr, common->macaddr, ETH_ALEN);
 401
 402         tsta.is_vif_sta = 1;
 403         tsta.sta_index = sta_idx;
 404         tsta.vif_index = hvif.index;
 405         tsta.maxampdu = cpu_to_be16(0xffff);
 406
 407         WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
 408         if (ret) {
 409                 ath_err(common, "Unable to add station entry for monitor mode\n");
 410                 goto err_sta;
 411         }
 412
 413         priv->sta_slot |= (1 << sta_idx);
 414         priv->nstations++;
 415         priv->vif_sta_pos[priv->mon_vif_idx] = sta_idx;
 416         priv->ah->is_monitoring = true;
 417
 418         ath_dbg(common, ATH_DBG_CONFIG,
 419                 "Attached a monitor interface at idx: %d, sta idx: %d\n",
 420                 priv->mon_vif_idx, sta_idx);
 421
 422         return 0;
 423
 424 err_sta:
 425         /*
 426          * Remove the interface from the target.
 427          */
 428         __ath9k_htc_remove_monitor_interface(priv);
 429 err_vif:
 430         ath_dbg(common, ATH_DBG_FATAL, "Unable to attach a monitor interface\n");
 431
 432         return ret;
 433 }
 434
 435 static int ath9k_htc_remove_monitor_interface(struct ath9k_htc_priv *priv)
 436 {
 437         struct ath_common *common = ath9k_hw_common(priv->ah);
 438         int ret = 0;
 439         u8 cmd_rsp, sta_idx;
 440
 441         __ath9k_htc_remove_monitor_interface(priv);
 442
 443         sta_idx = priv->vif_sta_pos[priv->mon_vif_idx];
 444
 445         WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
 446         if (ret) {
 447                 ath_err(common, "Unable to remove station entry for monitor mode\n");
 448                 return ret;
 449         }
 450
 451         priv->sta_slot &= ~(1 << sta_idx);
 452         priv->nstations--;
 453         priv->ah->is_monitoring = false;
 454
 455         ath_dbg(common, ATH_DBG_CONFIG,
 456                 "Removed a monitor interface at idx: %d, sta idx: %d\n",
 457                 priv->mon_vif_idx, sta_idx);
 458
 459         return 0;
 460 }
 461
 462 static int ath9k_htc_add_station(struct ath9k_htc_priv *priv,
 463                                  struct ieee80211_vif *vif,
 464                                  struct ieee80211_sta *sta)
 465 {
 466         struct ath_common *common = ath9k_hw_common(priv->ah);
 467         struct ath9k_htc_target_sta tsta;
 468         struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
 469         struct ath9k_htc_sta *ista;
 470         int ret, sta_idx;
 471         u8 cmd_rsp;
 472         u16 maxampdu;
 473
 474         if (priv->nstations >= ATH9K_HTC_MAX_STA)
 475                 return -ENOBUFS;
 476
 477         sta_idx = ffz(priv->sta_slot);
 478         if ((sta_idx < 0) || (sta_idx > ATH9K_HTC_MAX_STA))
 479                 return -ENOBUFS;
 480
 481         memset(&tsta, 0, sizeof(struct ath9k_htc_target_sta));
 482
 483         if (sta) {
 484                 ista = (struct ath9k_htc_sta *) sta->drv_priv;
 485                 memcpy(&tsta.macaddr, sta->addr, ETH_ALEN);
 486                 memcpy(&tsta.bssid, common->curbssid, ETH_ALEN);
 487                 tsta.is_vif_sta = 0;
 488                 ista->index = sta_idx;
 489         } else {
 490                 memcpy(&tsta.macaddr, vif->addr, ETH_ALEN);
 491                 tsta.is_vif_sta = 1;
 492         }
 493
 494         tsta.sta_index = sta_idx;
 495         tsta.vif_index = avp->index;
 496
 497         if (!sta) {
 498                 tsta.maxampdu = cpu_to_be16(0xffff);
 499         } else {
 500                 maxampdu = 1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
 501                                  sta->ht_cap.ampdu_factor);
 502                 tsta.maxampdu = cpu_to_be16(maxampdu);
 503         }
 504
 505         WMI_CMD_BUF(WMI_NODE_CREATE_CMDID, &tsta);
 506         if (ret) {
 507                 if (sta)
 508                         ath_err(common,
 509                                 "Unable to add station entry for: %pM\n",
 510                                 sta->addr);
 511                 return ret;
 512         }
 513
 514         if (sta) {
 515                 ath_dbg(common, ATH_DBG_CONFIG,
 516                         "Added a station entry for: %pM (idx: %d)\n",
 517                         sta->addr, tsta.sta_index);
 518         } else {
 519                 ath_dbg(common, ATH_DBG_CONFIG,
 520                         "Added a station entry for VIF %d (idx: %d)\n",
 521                         avp->index, tsta.sta_index);
 522         }
 523
 524         priv->sta_slot |= (1 << sta_idx);
 525         priv->nstations++;
 526         if (!sta)
 527                 priv->vif_sta_pos[avp->index] = sta_idx;
 528
 529         return 0;
 530 }
 531
 532 static int ath9k_htc_remove_station(struct ath9k_htc_priv *priv,
 533                                     struct ieee80211_vif *vif,
 534                                     struct ieee80211_sta *sta)
 535 {
 536         struct ath_common *common = ath9k_hw_common(priv->ah);
 537         struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *) vif->drv_priv;
 538         struct ath9k_htc_sta *ista;
 539         int ret;
 540         u8 cmd_rsp, sta_idx;
 541
 542         if (sta) {
 543                 ista = (struct ath9k_htc_sta *) sta->drv_priv;
 544                 sta_idx = ista->index;
 545         } else {
 546                 sta_idx = priv->vif_sta_pos[avp->index];
 547         }
 548
 549         WMI_CMD_BUF(WMI_NODE_REMOVE_CMDID, &sta_idx);
 550         if (ret) {
 551                 if (sta)
 552                         ath_err(common,
 553                                 "Unable to remove station entry for: %pM\n",
 554                                 sta->addr);
 555                 return ret;
 556         }
 557
 558         if (sta) {
 559                 ath_dbg(common, ATH_DBG_CONFIG,
 560                         "Removed a station entry for: %pM (idx: %d)\n",
 561                         sta->addr, sta_idx);
 562         } else {
 563                 ath_dbg(common, ATH_DBG_CONFIG,
 564                         "Removed a station entry for VIF %d (idx: %d)\n",
 565                         avp->index, sta_idx);
 566         }
 567
 568         priv->sta_slot &= ~(1 << sta_idx);
 569         priv->nstations--;
 570
 571         return 0;
 572 }
 573
 574 int ath9k_htc_update_cap_target(struct ath9k_htc_priv *priv,
 575                                 u8 enable_coex)
 576 {
 577         struct ath9k_htc_cap_target tcap;
 578         int ret;
 579         u8 cmd_rsp;
 580
 581         memset(&tcap, 0, sizeof(struct ath9k_htc_cap_target));
 582
 583         tcap.ampdu_limit = cpu_to_be32(0xffff);
 584         tcap.ampdu_subframes = 0xff;
 585         tcap.enable_coex = enable_coex;
 586         tcap.tx_chainmask = priv->ah->caps.tx_chainmask;
 587
 588         WMI_CMD_BUF(WMI_TARGET_IC_UPDATE_CMDID, &tcap);
 589
 590         return ret;
 591 }
 592
 593 static void ath9k_htc_setup_rate(struct ath9k_htc_priv *priv,
 594                                  struct ieee80211_sta *sta,
 595                                  struct ath9k_htc_target_rate *trate)
 596 {
 597         struct ath9k_htc_sta *ista = (struct ath9k_htc_sta *) sta->drv_priv;
 598         struct ieee80211_supported_band *sband;
 599         u32 caps = 0;
 600         int i, j;
 601
 602         sband = priv->hw->wiphy->bands[priv->hw->conf.channel->band];
 603
 604         for (i = 0, j = 0; i < sband->n_bitrates; i++) {
 605                 if (sta->supp_rates[sband->band] & BIT(i)) {
 606                         trate->rates.legacy_rates.rs_rates[j]
 607                                 = (sband->bitrates[i].bitrate * 2) / 10;
 608                         j++;
 609                 }
 610         }
 611         trate->rates.legacy_rates.rs_nrates = j;
 612
 613         if (sta->ht_cap.ht_supported) {
 614                 for (i = 0, j = 0; i < 77; i++) {
 615                         if (sta->ht_cap.mcs.rx_mask[i/8] & (1<<(i%8)))
 616                                 trate->rates.ht_rates.rs_rates[j++] = i;
 617                         if (j == ATH_HTC_RATE_MAX)
 618                                 break;
 619                 }
 620                 trate->rates.ht_rates.rs_nrates = j;
 621
 622                 caps = WLAN_RC_HT_FLAG;
 623                 if (sta->ht_cap.mcs.rx_mask[1])
 624                         caps |= WLAN_RC_DS_FLAG;
 625                 if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
 626                      (conf_is_ht40(&priv->hw->conf)))
 627                         caps |= WLAN_RC_40_FLAG;
 628                 if (conf_is_ht40(&priv->hw->conf) &&
 629                     (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40))
 630                         caps |= WLAN_RC_SGI_FLAG;
 631                 else if (conf_is_ht20(&priv->hw->conf) &&
 632                          (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20))
 633                         caps |= WLAN_RC_SGI_FLAG;
 634         }
 635
 636         trate->sta_index = ista->index;
 637         trate->isnew = 1;
 638         trate->capflags = cpu_to_be32(caps);
 639 }
 640
 641 static int ath9k_htc_send_rate_cmd(struct ath9k_htc_priv *priv,
 642                                     struct ath9k_htc_target_rate *trate)
 643 {
 644         struct ath_common *common = ath9k_hw_common(priv->ah);
 645         int ret;
 646         u8 cmd_rsp;
 647
 648         WMI_CMD_BUF(WMI_RC_RATE_UPDATE_CMDID, trate);
 649         if (ret) {
 650                 ath_err(common,
 651                         "Unable to initialize Rate information on target\n");
 652         }
 653
 654         return ret;
 655 }
 656
 657 static void ath9k_htc_init_rate(struct ath9k_htc_priv *priv,
 658                                 struct ieee80211_sta *sta)
 659 {
 660         struct ath_common *common = ath9k_hw_common(priv->ah);
 661         struct ath9k_htc_target_rate trate;
 662         int ret;
 663
 664         memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
 665         ath9k_htc_setup_rate(priv, sta, &trate);
 666         ret = ath9k_htc_send_rate_cmd(priv, &trate);
 667         if (!ret)
 668                 ath_dbg(common, ATH_DBG_CONFIG,
 669                         "Updated target sta: %pM, rate caps: 0x%X\n",
 670                         sta->addr, be32_to_cpu(trate.capflags));
 671 }
 672
 673 static void ath9k_htc_update_rate(struct ath9k_htc_priv *priv,
 674                                   struct ieee80211_vif *vif,
 675                                   struct ieee80211_bss_conf *bss_conf)
 676 {
 677         struct ath_common *common = ath9k_hw_common(priv->ah);
 678         struct ath9k_htc_target_rate trate;
 679         struct ieee80211_sta *sta;
 680         int ret;
 681
 682         memset(&trate, 0, sizeof(struct ath9k_htc_target_rate));
 683
 684         rcu_read_lock();
 685         sta = ieee80211_find_sta(vif, bss_conf->bssid);
 686         if (!sta) {
 687                 rcu_read_unlock();
 688                 return;
 689         }
 690         ath9k_htc_setup_rate(priv, sta, &trate);
 691         rcu_read_unlock();
 692
 693         ret = ath9k_htc_send_rate_cmd(priv, &trate);
 694         if (!ret)
 695                 ath_dbg(common, ATH_DBG_CONFIG,
 696                         "Updated target sta: %pM, rate caps: 0x%X\n",
 697                         bss_conf->bssid, be32_to_cpu(trate.capflags));
 698 }
 699
 700 static int ath9k_htc_tx_aggr_oper(struct ath9k_htc_priv *priv,
 701                                   struct ieee80211_vif *vif,
 702                                   struct ieee80211_sta *sta,
 703                                   enum ieee80211_ampdu_mlme_action action,
 704                                   u16 tid)
 705 {
 706         struct ath_common *common = ath9k_hw_common(priv->ah);
 707         struct ath9k_htc_target_aggr aggr;
 708         struct ath9k_htc_sta *ista;
 709         int ret = 0;
 710         u8 cmd_rsp;
 711
 712         if (tid >= ATH9K_HTC_MAX_TID)
 713                 return -EINVAL;
 714
 715         memset(&aggr, 0, sizeof(struct ath9k_htc_target_aggr));
 716         ista = (struct ath9k_htc_sta *) sta->drv_priv;
 717
 718         aggr.sta_index = ista->index;
 719         aggr.tidno = tid & 0xf;
 720         aggr.aggr_enable = (action == IEEE80211_AMPDU_TX_START) ? true : false;
 721
 722         WMI_CMD_BUF(WMI_TX_AGGR_ENABLE_CMDID, &aggr);
 723         if (ret)
 724                 ath_dbg(common, ATH_DBG_CONFIG,
 725                         "Unable to %s TX aggregation for (%pM, %d)\n",
 726                         (aggr.aggr_enable) ? "start" : "stop", sta->addr, tid);
 727         else
 728                 ath_dbg(common, ATH_DBG_CONFIG,
 729                         "%s TX aggregation for (%pM, %d)\n",
 730                         (aggr.aggr_enable) ? "Starting" : "Stopping",
 731                         sta->addr, tid);
 732
 733         spin_lock_bh(&priv->tx.tx_lock);
 734         ista->tid_state[tid] = (aggr.aggr_enable && !ret) ? AGGR_START : AGGR_STOP;
 735         spin_unlock_bh(&priv->tx.tx_lock);
 736
 737         return ret;
 738 }
 739
 740 /*******/
 741 /* ANI */
 742 /*******/
 743
 744 void ath9k_htc_start_ani(struct ath9k_htc_priv *priv)
 745 {
 746         struct ath_common *common = ath9k_hw_common(priv->ah);
 747         unsigned long timestamp = jiffies_to_msecs(jiffies);
 748
 749         common->ani.longcal_timer = timestamp;
 750         common->ani.shortcal_timer = timestamp;
 751         common->ani.checkani_timer = timestamp;
 752
 753         priv->op_flags |= OP_ANI_RUNNING;
 754
 755         ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
 756                                      msecs_to_jiffies(ATH_ANI_POLLINTERVAL));
 757 }
 758
 759 void ath9k_htc_stop_ani(struct ath9k_htc_priv *priv)
 760 {
 761         cancel_delayed_work_sync(&priv->ani_work);
 762         priv->op_flags &= ~OP_ANI_RUNNING;
 763 }
 764
 765 void ath9k_htc_ani_work(struct work_struct *work)
 766 {
 767         struct ath9k_htc_priv *priv =
 768                 container_of(work, struct ath9k_htc_priv, ani_work.work);
 769         struct ath_hw *ah = priv->ah;
 770         struct ath_common *common = ath9k_hw_common(ah);
 771         bool longcal = false;
 772         bool shortcal = false;
 773         bool aniflag = false;
 774         unsigned int timestamp = jiffies_to_msecs(jiffies);
 775         u32 cal_interval, short_cal_interval;
 776
 777         short_cal_interval = (ah->opmode == NL80211_IFTYPE_AP) ?
 778                 ATH_AP_SHORT_CALINTERVAL : ATH_STA_SHORT_CALINTERVAL;
 779
 780         /* Only calibrate if awake */
 781         if (ah->power_mode != ATH9K_PM_AWAKE)
 782                 goto set_timer;
 783
 784         /* Long calibration runs independently of short calibration. */
 785         if ((timestamp - common->ani.longcal_timer) >= ATH_LONG_CALINTERVAL) {
 786                 longcal = true;
 787                 ath_dbg(common, ATH_DBG_ANI, "longcal @%lu\n", jiffies);
 788                 common->ani.longcal_timer = timestamp;
 789         }
 790
 791         /* Short calibration applies only while caldone is false */
 792         if (!common->ani.caldone) {
 793                 if ((timestamp - common->ani.shortcal_timer) >=
 794                     short_cal_interval) {
 795                         shortcal = true;
 796                         ath_dbg(common, ATH_DBG_ANI,
 797                                 "shortcal @%lu\n", jiffies);
 798                         common->ani.shortcal_timer = timestamp;
 799                         common->ani.resetcal_timer = timestamp;
 800                 }
 801         } else {
 802                 if ((timestamp - common->ani.resetcal_timer) >=
 803                     ATH_RESTART_CALINTERVAL) {
 804                         common->ani.caldone = ath9k_hw_reset_calvalid(ah);
 805                         if (common->ani.caldone)
 806                                 common->ani.resetcal_timer = timestamp;
 807                 }
 808         }
 809
 810         /* Verify whether we must check ANI */
 811         if ((timestamp - common->ani.checkani_timer) >= ATH_ANI_POLLINTERVAL) {
 812                 aniflag = true;
 813                 common->ani.checkani_timer = timestamp;
 814         }
 815
 816         /* Skip all processing if there's nothing to do. */
 817         if (longcal || shortcal || aniflag) {
 818
 819                 ath9k_htc_ps_wakeup(priv);
 820
 821                 /* Call ANI routine if necessary */
 822                 if (aniflag)
 823                         ath9k_hw_ani_monitor(ah, ah->curchan);
 824
 825                 /* Perform calibration if necessary */
 826                 if (longcal || shortcal)
 827                         common->ani.caldone =
 828                                 ath9k_hw_calibrate(ah, ah->curchan,
 829                                                    common->rx_chainmask,
 830                                                    longcal);
 831
 832                 ath9k_htc_ps_restore(priv);
 833         }
 834
 835 set_timer:
 836         /*
 837         * Set timer interval based on previous results.
 838         * The interval must be the shortest necessary to satisfy ANI,
 839         * short calibration and long calibration.
 840         */
 841         cal_interval = ATH_LONG_CALINTERVAL;
 842         if (priv->ah->config.enable_ani)
 843                 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
 844         if (!common->ani.caldone)
 845                 cal_interval = min(cal_interval, (u32)short_cal_interval);
 846
 847         ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
 848                                      msecs_to_jiffies(cal_interval));
 849 }
 850
 851 /**********************/
 852 /* mac80211 Callbacks */
 853 /**********************/
 854
 855 static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 856 {
 857         struct ieee80211_hdr *hdr;
 858         struct ath9k_htc_priv *priv = hw->priv;
 859         struct ath_common *common = ath9k_hw_common(priv->ah);
 860         int padpos, padsize, ret, slot;
 861
 862         hdr = (struct ieee80211_hdr *) skb->data;
 863
 864         /* Add the padding after the header if this is not already done */
 865         padpos = ath9k_cmn_padpos(hdr->frame_control);
 866         padsize = padpos & 3;
 867         if (padsize && skb->len > padpos) {
 868                 if (skb_headroom(skb) < padsize) {
 869                         ath_dbg(common, ATH_DBG_XMIT, "No room for padding\n");
 870                         goto fail_tx;
 871                 }
 872                 skb_push(skb, padsize);
 873                 memmove(skb->data, skb->data + padsize, padpos);
 874         }
 875
 876         slot = ath9k_htc_tx_get_slot(priv);
 877         if (slot < 0) {
 878                 ath_dbg(common, ATH_DBG_XMIT, "No free TX slot\n");
 879                 goto fail_tx;
 880         }
 881
 882         ret = ath9k_htc_tx_start(priv, skb, slot, false);
 883         if (ret != 0) {
 884                 ath_dbg(common, ATH_DBG_XMIT, "Tx failed\n");
 885                 goto clear_slot;
 886         }
 887
 888         ath9k_htc_check_stop_queues(priv);
 889
 890         return;
 891
 892 clear_slot:
 893         ath9k_htc_tx_clear_slot(priv, slot);
 894 fail_tx:
 895         dev_kfree_skb_any(skb);
 896 }
 897
 898 static int ath9k_htc_start(struct ieee80211_hw *hw)
 899 {
 900         struct ath9k_htc_priv *priv = hw->priv;
 901         struct ath_hw *ah = priv->ah;
 902         struct ath_common *common = ath9k_hw_common(ah);
 903         struct ieee80211_channel *curchan = hw->conf.channel;
 904         struct ath9k_channel *init_channel;
 905         int ret = 0;
 906         enum htc_phymode mode;
 907         __be16 htc_mode;
 908         u8 cmd_rsp;
 909
 910         mutex_lock(&priv->mutex);
 911
 912         ath_dbg(common, ATH_DBG_CONFIG,
 913                 "Starting driver with initial channel: %d MHz\n",
 914                 curchan->center_freq);
 915
 916         /* Ensure that HW is awake before flushing RX */
 917         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
 918         WMI_CMD(WMI_FLUSH_RECV_CMDID);
 919
 920         /* setup initial channel */
 921         init_channel = ath9k_cmn_get_curchannel(hw, ah);
 922
 923         ath9k_hw_htc_resetinit(ah);
 924         ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 925         if (ret) {
 926                 ath_err(common,
 927                         "Unable to reset hardware; reset status %d (freq %u MHz)\n",
 928                         ret, curchan->center_freq);
 929                 mutex_unlock(&priv->mutex);
 930                 return ret;
 931         }
 932
 933         ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
 934                                &priv->curtxpow);
 935
 936         mode = ath9k_htc_get_curmode(priv, init_channel);
 937         htc_mode = cpu_to_be16(mode);
 938         WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
 939         WMI_CMD(WMI_ATH_INIT_CMDID);
 940         WMI_CMD(WMI_START_RECV_CMDID);
 941
 942         ath9k_host_rx_init(priv);
 943
 944         ret = ath9k_htc_update_cap_target(priv, 0);
 945         if (ret)
 946                 ath_dbg(common, ATH_DBG_CONFIG,
 947                         "Failed to update capability in target\n");
 948
 949         priv->op_flags &= ~OP_INVALID;
 950         htc_start(priv->htc);
 951
 952         spin_lock_bh(&priv->tx.tx_lock);
 953         priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
 954         spin_unlock_bh(&priv->tx.tx_lock);
 955
 956         ieee80211_wake_queues(hw);
 957
 958         mod_timer(&priv->tx.cleanup_timer,
 959                   jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
 960
 961         if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE) {
 962                 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 963                                            AR_STOMP_LOW_WLAN_WGHT);
 964                 ath9k_hw_btcoex_enable(ah);
 965                 ath_htc_resume_btcoex_work(priv);
 966         }
 967         mutex_unlock(&priv->mutex);
 968
 969         return ret;
 970 }
 971
 972 static void ath9k_htc_stop(struct ieee80211_hw *hw)
 973 {
 974         struct ath9k_htc_priv *priv = hw->priv;
 975         struct ath_hw *ah = priv->ah;
 976         struct ath_common *common = ath9k_hw_common(ah);
 977         int ret __attribute__ ((unused));
 978         u8 cmd_rsp;
 979
 980         mutex_lock(&priv->mutex);
 981
 982         if (priv->op_flags & OP_INVALID) {
 983                 ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
 984                 mutex_unlock(&priv->mutex);
 985                 return;
 986         }
 987
 988         ath9k_htc_ps_wakeup(priv);
 989
 990         WMI_CMD(WMI_DISABLE_INTR_CMDID);
 991         WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
 992         WMI_CMD(WMI_STOP_RECV_CMDID);
 993
 994         tasklet_kill(&priv->rx_tasklet);
 995
 996         del_timer_sync(&priv->tx.cleanup_timer);
 997         ath9k_htc_tx_drain(priv);
 998         ath9k_wmi_event_drain(priv);
 999
1000         mutex_unlock(&priv->mutex);
1001
1002         /* Cancel all the running timers/work .. */
1003         cancel_work_sync(&priv->fatal_work);
1004         cancel_work_sync(&priv->ps_work);
1005
1006 #ifdef CONFIG_MAC80211_LEDS
1007         cancel_work_sync(&priv->led_work);
1008 #endif
1009         ath9k_htc_stop_ani(priv);
1010
1011         mutex_lock(&priv->mutex);
1012
1013         if (ah->btcoex_hw.enabled) {
1014                 ath9k_hw_btcoex_disable(ah);
1015                 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1016                         ath_htc_cancel_btcoex_work(priv);
1017         }
1018
1019         /* Remove a monitor interface if it's present. */
1020         if (priv->ah->is_monitoring)
1021                 ath9k_htc_remove_monitor_interface(priv);
1022
1023         ath9k_hw_phy_disable(ah);
1024         ath9k_hw_disable(ah);
1025         ath9k_htc_ps_restore(priv);
1026         ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
1027
1028         priv->op_flags |= OP_INVALID;
1029
1030         ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1031         mutex_unlock(&priv->mutex);
1032 }
1033
1034 static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
1035                                    struct ieee80211_vif *vif)
1036 {
1037         struct ath9k_htc_priv *priv = hw->priv;
1038         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1039         struct ath_common *common = ath9k_hw_common(priv->ah);
1040         struct ath9k_htc_target_vif hvif;
1041         int ret = 0;
1042         u8 cmd_rsp;
1043
1044         mutex_lock(&priv->mutex);
1045
1046         if (priv->nvifs >= ATH9K_HTC_MAX_VIF) {
1047                 mutex_unlock(&priv->mutex);
1048                 return -ENOBUFS;
1049         }
1050
1051         if (priv->num_ibss_vif ||
1052             (priv->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
1053                 ath_err(common, "IBSS coexistence with other modes is not allowed\n");
1054                 mutex_unlock(&priv->mutex);
1055                 return -ENOBUFS;
1056         }
1057
1058         if (((vif->type == NL80211_IFTYPE_AP) ||
1059              (vif->type == NL80211_IFTYPE_ADHOC)) &&
1060             ((priv->num_ap_vif + priv->num_ibss_vif) >= ATH9K_HTC_MAX_BCN_VIF)) {
1061                 ath_err(common, "Max. number of beaconing interfaces reached\n");
1062                 mutex_unlock(&priv->mutex);
1063                 return -ENOBUFS;
1064         }
1065
1066         ath9k_htc_ps_wakeup(priv);
1067         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1068         memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1069
1070         switch (vif->type) {
1071         case NL80211_IFTYPE_STATION:
1072                 hvif.opmode = HTC_M_STA;
1073                 break;
1074         case NL80211_IFTYPE_ADHOC:
1075                 hvif.opmode = HTC_M_IBSS;
1076                 break;
1077         case NL80211_IFTYPE_AP:
1078                 hvif.opmode = HTC_M_HOSTAP;
1079                 break;
1080         default:
1081                 ath_err(common,
1082                         "Interface type %d not yet supported\n", vif->type);
1083                 ret = -EOPNOTSUPP;
1084                 goto out;
1085         }
1086
1087         /* Index starts from zero on the target */
1088         avp->index = hvif.index = ffz(priv->vif_slot);
1089         hvif.rtsthreshold = cpu_to_be16(2304);
1090         WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
1091         if (ret)
1092                 goto out;
1093
1094         /*
1095          * We need a node in target to tx mgmt frames
1096          * before association.
1097          */
1098         ret = ath9k_htc_add_station(priv, vif, NULL);
1099         if (ret) {
1100                 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1101                 goto out;
1102         }
1103
1104         ath9k_htc_set_bssid_mask(priv, vif);
1105
1106         priv->vif_slot |= (1 << avp->index);
1107         priv->nvifs++;
1108
1109         INC_VIF(priv, vif->type);
1110
1111         if ((vif->type == NL80211_IFTYPE_AP) ||
1112             (vif->type == NL80211_IFTYPE_ADHOC))
1113                 ath9k_htc_assign_bslot(priv, vif);
1114
1115         ath9k_htc_set_opmode(priv);
1116
1117         if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1118             !(priv->op_flags & OP_ANI_RUNNING)) {
1119                 ath9k_hw_set_tsfadjust(priv->ah, 1);
1120                 ath9k_htc_start_ani(priv);
1121         }
1122
1123         ath_dbg(common, ATH_DBG_CONFIG,
1124                 "Attach a VIF of type: %d at idx: %d\n", vif->type, avp->index);
1125
1126 out:
1127         ath9k_htc_ps_restore(priv);
1128         mutex_unlock(&priv->mutex);
1129
1130         return ret;
1131 }
1132
1133 static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
1134                                        struct ieee80211_vif *vif)
1135 {
1136         struct ath9k_htc_priv *priv = hw->priv;
1137         struct ath_common *common = ath9k_hw_common(priv->ah);
1138         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1139         struct ath9k_htc_target_vif hvif;
1140         int ret = 0;
1141         u8 cmd_rsp;
1142
1143         mutex_lock(&priv->mutex);
1144         ath9k_htc_ps_wakeup(priv);
1145
1146         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1147         memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1148         hvif.index = avp->index;
1149         WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1150         if (ret) {
1151                 ath_err(common, "Unable to remove interface at idx: %d\n",
1152                         avp->index);
1153         }
1154         priv->nvifs--;
1155         priv->vif_slot &= ~(1 << avp->index);
1156
1157         ath9k_htc_remove_station(priv, vif, NULL);
1158
1159         DEC_VIF(priv, vif->type);
1160
1161         if ((vif->type == NL80211_IFTYPE_AP) ||
1162             (vif->type == NL80211_IFTYPE_ADHOC))
1163                 ath9k_htc_remove_bslot(priv, vif);
1164
1165         ath9k_htc_set_opmode(priv);
1166
1167         ath9k_htc_set_bssid_mask(priv, vif);
1168
1169         /*
1170          * Stop ANI only if there are no associated station interfaces.
1171          */
1172         if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) {
1173                 priv->rearm_ani = false;
1174                 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1175                                                    ath9k_htc_vif_iter, priv);
1176                 if (!priv->rearm_ani)
1177                         ath9k_htc_stop_ani(priv);
1178         }
1179
1180         ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface at idx: %d\n", avp->index);
1181
1182         ath9k_htc_ps_restore(priv);
1183         mutex_unlock(&priv->mutex);
1184 }
1185
1186 static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
1187 {
1188         struct ath9k_htc_priv *priv = hw->priv;
1189         struct ath_common *common = ath9k_hw_common(priv->ah);
1190         struct ieee80211_conf *conf = &hw->conf;
1191
1192         mutex_lock(&priv->mutex);
1193
1194         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1195                 bool enable_radio = false;
1196                 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1197
1198                 mutex_lock(&priv->htc_pm_lock);
1199                 if (!idle && priv->ps_idle)
1200                         enable_radio = true;
1201                 priv->ps_idle = idle;
1202                 mutex_unlock(&priv->htc_pm_lock);
1203
1204                 if (enable_radio) {
1205                         ath_dbg(common, ATH_DBG_CONFIG,
1206                                 "not-idle: enabling radio\n");
1207                         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1208                         ath9k_htc_radio_enable(hw);
1209                 }
1210         }
1211
1212         /*
1213          * Monitor interface should be added before
1214          * IEEE80211_CONF_CHANGE_CHANNEL is handled.
1215          */
1216         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1217                 if ((conf->flags & IEEE80211_CONF_MONITOR) &&
1218                     !priv->ah->is_monitoring)
1219                         ath9k_htc_add_monitor_interface(priv);
1220                 else if (priv->ah->is_monitoring)
1221                         ath9k_htc_remove_monitor_interface(priv);
1222         }
1223
1224         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1225                 struct ieee80211_channel *curchan = hw->conf.channel;
1226                 int pos = curchan->hw_value;
1227
1228                 ath_dbg(common, ATH_DBG_CONFIG, "Set channel: %d MHz\n",
1229                         curchan->center_freq);
1230
1231                 ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
1232                                           hw->conf.channel,
1233                                           hw->conf.channel_type);
1234
1235                 if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
1236                         ath_err(common, "Unable to set channel\n");
1237                         mutex_unlock(&priv->mutex);
1238                         return -EINVAL;
1239                 }
1240
1241         }
1242
1243         if (changed & IEEE80211_CONF_CHANGE_PS) {
1244                 if (conf->flags & IEEE80211_CONF_PS) {
1245                         ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
1246                         priv->ps_enabled = true;
1247                 } else {
1248                         priv->ps_enabled = false;
1249                         cancel_work_sync(&priv->ps_work);
1250                         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1251                 }
1252         }
1253
1254         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1255                 priv->txpowlimit = 2 * conf->power_level;
1256                 ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
1257                                        priv->txpowlimit, &priv->curtxpow);
1258         }
1259
1260         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1261                 mutex_lock(&priv->htc_pm_lock);
1262                 if (!priv->ps_idle) {
1263                         mutex_unlock(&priv->htc_pm_lock);
1264                         goto out;
1265                 }
1266                 mutex_unlock(&priv->htc_pm_lock);
1267
1268                 ath_dbg(common, ATH_DBG_CONFIG,
1269                         "idle: disabling radio\n");
1270                 ath9k_htc_radio_disable(hw);
1271         }
1272
1273 out:
1274         mutex_unlock(&priv->mutex);
1275         return 0;
1276 }
1277
1278 #define SUPPORTED_FILTERS                       \
1279         (FIF_PROMISC_IN_BSS |                   \
1280         FIF_ALLMULTI |                          \
1281         FIF_CONTROL |                           \
1282         FIF_PSPOLL |                            \
1283         FIF_OTHER_BSS |                         \
1284         FIF_BCN_PRBRESP_PROMISC |               \
1285         FIF_PROBE_REQ |                         \
1286         FIF_FCSFAIL)
1287
1288 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1289                                        unsigned int changed_flags,
1290                                        unsigned int *total_flags,
1291                                        u64 multicast)
1292 {
1293         struct ath9k_htc_priv *priv = hw->priv;
1294         u32 rfilt;
1295
1296         mutex_lock(&priv->mutex);
1297         ath9k_htc_ps_wakeup(priv);
1298
1299         changed_flags &= SUPPORTED_FILTERS;
1300         *total_flags &= SUPPORTED_FILTERS;
1301
1302         priv->rxfilter = *total_flags;
1303         rfilt = ath9k_htc_calcrxfilter(priv);
1304         ath9k_hw_setrxfilter(priv->ah, rfilt);
1305
1306         ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
1307                 "Set HW RX filter: 0x%x\n", rfilt);
1308
1309         ath9k_htc_ps_restore(priv);
1310         mutex_unlock(&priv->mutex);
1311 }
1312
1313 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1314                              struct ieee80211_vif *vif,
1315                              struct ieee80211_sta *sta)
1316 {
1317         struct ath9k_htc_priv *priv = hw->priv;
1318         int ret;
1319
1320         mutex_lock(&priv->mutex);
1321         ath9k_htc_ps_wakeup(priv);
1322         ret = ath9k_htc_add_station(priv, vif, sta);
1323         if (!ret)
1324                 ath9k_htc_init_rate(priv, sta);
1325         ath9k_htc_ps_restore(priv);
1326         mutex_unlock(&priv->mutex);
1327
1328         return ret;
1329 }
1330
1331 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1332                                 struct ieee80211_vif *vif,
1333                                 struct ieee80211_sta *sta)
1334 {
1335         struct ath9k_htc_priv *priv = hw->priv;
1336         struct ath9k_htc_sta *ista;
1337         int ret;
1338
1339         mutex_lock(&priv->mutex);
1340         ath9k_htc_ps_wakeup(priv);
1341         ista = (struct ath9k_htc_sta *) sta->drv_priv;
1342         htc_sta_drain(priv->htc, ista->index);
1343         ret = ath9k_htc_remove_station(priv, vif, sta);
1344         ath9k_htc_ps_restore(priv);
1345         mutex_unlock(&priv->mutex);
1346
1347         return ret;
1348 }
1349
1350 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, u16 queue,
1351                              const struct ieee80211_tx_queue_params *params)
1352 {
1353         struct ath9k_htc_priv *priv = hw->priv;
1354         struct ath_common *common = ath9k_hw_common(priv->ah);
1355         struct ath9k_tx_queue_info qi;
1356         int ret = 0, qnum;
1357
1358         if (queue >= WME_NUM_AC)
1359                 return 0;
1360
1361         mutex_lock(&priv->mutex);
1362         ath9k_htc_ps_wakeup(priv);
1363
1364         memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1365
1366         qi.tqi_aifs = params->aifs;
1367         qi.tqi_cwmin = params->cw_min;
1368         qi.tqi_cwmax = params->cw_max;
1369         qi.tqi_burstTime = params->txop;
1370
1371         qnum = get_hw_qnum(queue, priv->hwq_map);
1372
1373         ath_dbg(common, ATH_DBG_CONFIG,
1374                 "Configure tx [queue/hwq] [%d/%d],  aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1375                 queue, qnum, params->aifs, params->cw_min,
1376                 params->cw_max, params->txop);
1377
1378         ret = ath_htc_txq_update(priv, qnum, &qi);
1379         if (ret) {
1380                 ath_err(common, "TXQ Update failed\n");
1381                 goto out;
1382         }
1383
1384         if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1385             (qnum == priv->hwq_map[WME_AC_BE]))
1386                     ath9k_htc_beaconq_config(priv);
1387 out:
1388         ath9k_htc_ps_restore(priv);
1389         mutex_unlock(&priv->mutex);
1390
1391         return ret;
1392 }
1393
1394 static int ath9k_htc_set_key(struct ieee80211_hw *hw,
1395                              enum set_key_cmd cmd,
1396                              struct ieee80211_vif *vif,
1397                              struct ieee80211_sta *sta,
1398                              struct ieee80211_key_conf *key)
1399 {
1400         struct ath9k_htc_priv *priv = hw->priv;
1401         struct ath_common *common = ath9k_hw_common(priv->ah);
1402         int ret = 0;
1403
1404         if (htc_modparam_nohwcrypt)
1405                 return -ENOSPC;
1406
1407         mutex_lock(&priv->mutex);
1408         ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1409         ath9k_htc_ps_wakeup(priv);
1410
1411         switch (cmd) {
1412         case SET_KEY:
1413                 ret = ath_key_config(common, vif, sta, key);
1414                 if (ret >= 0) {
1415                         key->hw_key_idx = ret;
1416                         /* push IV and Michael MIC generation to stack */
1417                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1418                         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1419                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1420                         if (priv->ah->sw_mgmt_crypto &&
1421                             key->cipher == WLAN_CIPHER_SUITE_CCMP)
1422                                 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1423                         ret = 0;
1424                 }
1425                 break;
1426         case DISABLE_KEY:
1427                 ath_key_delete(common, key);
1428                 break;
1429         default:
1430                 ret = -EINVAL;
1431         }
1432
1433         ath9k_htc_ps_restore(priv);
1434         mutex_unlock(&priv->mutex);
1435
1436         return ret;
1437 }
1438
1439 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1440 {
1441         struct ath_common *common = ath9k_hw_common(priv->ah);
1442
1443         ath9k_hw_write_associd(priv->ah);
1444         ath_dbg(common, ATH_DBG_CONFIG,
1445                 "BSSID: %pM aid: 0x%x\n",
1446                 common->curbssid, common->curaid);
1447 }
1448
1449 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1450 {
1451         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
1452         struct ath_common *common = ath9k_hw_common(priv->ah);
1453         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1454
1455         if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) {
1456                 common->curaid = bss_conf->aid;
1457                 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1458         }
1459 }
1460
1461 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1462 {
1463         if (priv->num_sta_assoc_vif == 1) {
1464                 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1465                                                            ath9k_htc_bss_iter, priv);
1466                 ath9k_htc_set_bssid(priv);
1467         }
1468 }
1469
1470 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1471                                        struct ieee80211_vif *vif,
1472                                        struct ieee80211_bss_conf *bss_conf,
1473                                        u32 changed)
1474 {
1475         struct ath9k_htc_priv *priv = hw->priv;
1476         struct ath_hw *ah = priv->ah;
1477         struct ath_common *common = ath9k_hw_common(ah);
1478
1479         mutex_lock(&priv->mutex);
1480         ath9k_htc_ps_wakeup(priv);
1481
1482         if (changed & BSS_CHANGED_ASSOC) {
1483                 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1484                         bss_conf->assoc);
1485
1486                 bss_conf->assoc ?
1487                         priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1488
1489                 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1490                         if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
1491                                 ath9k_htc_start_ani(priv);
1492                         else if (priv->num_sta_assoc_vif == 0)
1493                                 ath9k_htc_stop_ani(priv);
1494                 }
1495         }
1496
1497         if (changed & BSS_CHANGED_BSSID) {
1498                 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1499                         common->curaid = bss_conf->aid;
1500                         memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1501                         ath9k_htc_set_bssid(priv);
1502                 } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1503                         ath9k_htc_choose_set_bssid(priv);
1504                 }
1505         }
1506
1507         if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1508                 ath_dbg(common, ATH_DBG_CONFIG,
1509                         "Beacon enabled for BSS: %pM\n", bss_conf->bssid);
1510                 ath9k_htc_set_tsfadjust(priv, vif);
1511                 priv->op_flags |= OP_ENABLE_BEACON;
1512                 ath9k_htc_beacon_config(priv, vif);
1513         }
1514
1515         if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1516                 /*
1517                  * Disable SWBA interrupt only if there are no
1518                  * AP/IBSS interfaces.
1519                  */
1520                 if ((priv->num_ap_vif <= 1) || priv->num_ibss_vif) {
1521                         ath_dbg(common, ATH_DBG_CONFIG,
1522                                 "Beacon disabled for BSS: %pM\n",
1523                                 bss_conf->bssid);
1524                         priv->op_flags &= ~OP_ENABLE_BEACON;
1525                         ath9k_htc_beacon_config(priv, vif);
1526                 }
1527         }
1528
1529         if (changed & BSS_CHANGED_BEACON_INT) {
1530                 /*
1531                  * Reset the HW TSF for the first AP interface.
1532                  */
1533                 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1534                     (priv->nvifs == 1) &&
1535                     (priv->num_ap_vif == 1) &&
1536                     (vif->type == NL80211_IFTYPE_AP)) {
1537                         priv->op_flags |= OP_TSF_RESET;
1538                 }
1539                 ath_dbg(common, ATH_DBG_CONFIG,
1540                         "Beacon interval changed for BSS: %pM\n",
1541                         bss_conf->bssid);
1542                 ath9k_htc_beacon_config(priv, vif);
1543         }
1544
1545         if (changed & BSS_CHANGED_ERP_SLOT) {
1546                 if (bss_conf->use_short_slot)
1547                         ah->slottime = 9;
1548                 else
1549                         ah->slottime = 20;
1550
1551                 ath9k_hw_init_global_settings(ah);
1552         }
1553
1554         if (changed & BSS_CHANGED_HT)
1555                 ath9k_htc_update_rate(priv, vif, bss_conf);
1556
1557         ath9k_htc_ps_restore(priv);
1558         mutex_unlock(&priv->mutex);
1559 }
1560
1561 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw)
1562 {
1563         struct ath9k_htc_priv *priv = hw->priv;
1564         u64 tsf;
1565
1566         mutex_lock(&priv->mutex);
1567         ath9k_htc_ps_wakeup(priv);
1568         tsf = ath9k_hw_gettsf64(priv->ah);
1569         ath9k_htc_ps_restore(priv);
1570         mutex_unlock(&priv->mutex);
1571
1572         return tsf;
1573 }
1574
1575 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1576 {
1577         struct ath9k_htc_priv *priv = hw->priv;
1578
1579         mutex_lock(&priv->mutex);
1580         ath9k_htc_ps_wakeup(priv);
1581         ath9k_hw_settsf64(priv->ah, tsf);
1582         ath9k_htc_ps_restore(priv);
1583         mutex_unlock(&priv->mutex);
1584 }
1585
1586 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
1587 {
1588         struct ath9k_htc_priv *priv = hw->priv;
1589
1590         mutex_lock(&priv->mutex);
1591         ath9k_htc_ps_wakeup(priv);
1592         ath9k_hw_reset_tsf(priv->ah);
1593         ath9k_htc_ps_restore(priv);
1594         mutex_unlock(&priv->mutex);
1595 }
1596
1597 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1598                                   struct ieee80211_vif *vif,
1599                                   enum ieee80211_ampdu_mlme_action action,
1600                                   struct ieee80211_sta *sta,
1601                                   u16 tid, u16 *ssn, u8 buf_size)
1602 {
1603         struct ath9k_htc_priv *priv = hw->priv;
1604         struct ath9k_htc_sta *ista;
1605         int ret = 0;
1606
1607         mutex_lock(&priv->mutex);
1608         ath9k_htc_ps_wakeup(priv);
1609
1610         switch (action) {
1611         case IEEE80211_AMPDU_RX_START:
1612                 break;
1613         case IEEE80211_AMPDU_RX_STOP:
1614                 break;
1615         case IEEE80211_AMPDU_TX_START:
1616                 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1617                 if (!ret)
1618                         ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1619                 break;
1620         case IEEE80211_AMPDU_TX_STOP:
1621                 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1622                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1623                 break;
1624         case IEEE80211_AMPDU_TX_OPERATIONAL:
1625                 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1626                 spin_lock_bh(&priv->tx.tx_lock);
1627                 ista->tid_state[tid] = AGGR_OPERATIONAL;
1628                 spin_unlock_bh(&priv->tx.tx_lock);
1629                 break;
1630         default:
1631                 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1632         }
1633
1634         ath9k_htc_ps_restore(priv);
1635         mutex_unlock(&priv->mutex);
1636
1637         return ret;
1638 }
1639
1640 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
1641 {
1642         struct ath9k_htc_priv *priv = hw->priv;
1643
1644         mutex_lock(&priv->mutex);
1645         spin_lock_bh(&priv->beacon_lock);
1646         priv->op_flags |= OP_SCANNING;
1647         spin_unlock_bh(&priv->beacon_lock);
1648         cancel_work_sync(&priv->ps_work);
1649         ath9k_htc_stop_ani(priv);
1650         mutex_unlock(&priv->mutex);
1651 }
1652
1653 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
1654 {
1655         struct ath9k_htc_priv *priv = hw->priv;
1656
1657         mutex_lock(&priv->mutex);
1658         spin_lock_bh(&priv->beacon_lock);
1659         priv->op_flags &= ~OP_SCANNING;
1660         spin_unlock_bh(&priv->beacon_lock);
1661         ath9k_htc_ps_wakeup(priv);
1662         ath9k_htc_vif_reconfig(priv);
1663         ath9k_htc_ps_restore(priv);
1664         mutex_unlock(&priv->mutex);
1665 }
1666
1667 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1668 {
1669         return 0;
1670 }
1671
1672 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1673                                          u8 coverage_class)
1674 {
1675         struct ath9k_htc_priv *priv = hw->priv;
1676
1677         mutex_lock(&priv->mutex);
1678         ath9k_htc_ps_wakeup(priv);
1679         priv->ah->coverage_class = coverage_class;
1680         ath9k_hw_init_global_settings(priv->ah);
1681         ath9k_htc_ps_restore(priv);
1682         mutex_unlock(&priv->mutex);
1683 }
1684
1685 /*
1686  * Currently, this is used only for selecting the minimum rate
1687  * for management frames, rate selection for data frames remain
1688  * unaffected.
1689  */
1690 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1691                                       struct ieee80211_vif *vif,
1692                                       const struct cfg80211_bitrate_mask *mask)
1693 {
1694         struct ath9k_htc_priv *priv = hw->priv;
1695         struct ath_common *common = ath9k_hw_common(priv->ah);
1696         struct ath9k_htc_target_rate_mask tmask;
1697         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1698         int ret = 0;
1699         u8 cmd_rsp;
1700
1701         memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1702
1703         tmask.vif_index = avp->index;
1704         tmask.band = IEEE80211_BAND_2GHZ;
1705         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_2GHZ].legacy);
1706
1707         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1708         if (ret) {
1709                 ath_err(common,
1710                         "Unable to set 2G rate mask for "
1711                         "interface at idx: %d\n", avp->index);
1712                 goto out;
1713         }
1714
1715         tmask.band = IEEE80211_BAND_5GHZ;
1716         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_5GHZ].legacy);
1717
1718         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1719         if (ret) {
1720                 ath_err(common,
1721                         "Unable to set 5G rate mask for "
1722                         "interface at idx: %d\n", avp->index);
1723                 goto out;
1724         }
1725
1726         ath_dbg(common, ATH_DBG_CONFIG,
1727                 "Set bitrate masks: 0x%x, 0x%x\n",
1728                 mask->control[IEEE80211_BAND_2GHZ].legacy,
1729                 mask->control[IEEE80211_BAND_5GHZ].legacy);
1730 out:
1731         return ret;
1732 }
1733
1734 struct ieee80211_ops ath9k_htc_ops = {
1735         .tx                 = ath9k_htc_tx,
1736         .start              = ath9k_htc_start,
1737         .stop               = ath9k_htc_stop,
1738         .add_interface      = ath9k_htc_add_interface,
1739         .remove_interface   = ath9k_htc_remove_interface,
1740         .config             = ath9k_htc_config,
1741         .configure_filter   = ath9k_htc_configure_filter,
1742         .sta_add            = ath9k_htc_sta_add,
1743         .sta_remove         = ath9k_htc_sta_remove,
1744         .conf_tx            = ath9k_htc_conf_tx,
1745         .bss_info_changed   = ath9k_htc_bss_info_changed,
1746         .set_key            = ath9k_htc_set_key,
1747         .get_tsf            = ath9k_htc_get_tsf,
1748         .set_tsf            = ath9k_htc_set_tsf,
1749         .reset_tsf          = ath9k_htc_reset_tsf,
1750         .ampdu_action       = ath9k_htc_ampdu_action,
1751         .sw_scan_start      = ath9k_htc_sw_scan_start,
1752         .sw_scan_complete   = ath9k_htc_sw_scan_complete,
1753         .set_rts_threshold  = ath9k_htc_set_rts_threshold,
1754         .rfkill_poll        = ath9k_htc_rfkill_poll_state,
1755         .set_coverage_class = ath9k_htc_set_coverage_class,
1756         .set_bitrate_mask   = ath9k_htc_set_bitrate_mask,
1757 };