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, 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, 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, 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, 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, CONFIG,
 516                         "Added a station entry for: %pM (idx: %d)\n",
 517                         sta->addr, tsta.sta_index);
 518         } else {
 519                 ath_dbg(common, 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, CONFIG,
 560                         "Removed a station entry for: %pM (idx: %d)\n",
 561                         sta->addr, sta_idx);
 562         } else {
 563                 ath_dbg(common, 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, 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, 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, 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, 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, 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, ANI, "shortcal @%lu\n", jiffies);
 797                         common->ani.shortcal_timer = timestamp;
 798                         common->ani.resetcal_timer = timestamp;
 799                 }
 800         } else {
 801                 if ((timestamp - common->ani.resetcal_timer) >=
 802                     ATH_RESTART_CALINTERVAL) {
 803                         common->ani.caldone = ath9k_hw_reset_calvalid(ah);
 804                         if (common->ani.caldone)
 805                                 common->ani.resetcal_timer = timestamp;
 806                 }
 807         }
 808
 809         /* Verify whether we must check ANI */
 810         if (ah->config.enable_ani &&
 811             (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                                                    ah->rxchainmask, longcal);
 830
 831                 ath9k_htc_ps_restore(priv);
 832         }
 833
 834 set_timer:
 835         /*
 836         * Set timer interval based on previous results.
 837         * The interval must be the shortest necessary to satisfy ANI,
 838         * short calibration and long calibration.
 839         */
 840         cal_interval = ATH_LONG_CALINTERVAL;
 841         if (ah->config.enable_ani)
 842                 cal_interval = min(cal_interval, (u32)ATH_ANI_POLLINTERVAL);
 843         if (!common->ani.caldone)
 844                 cal_interval = min(cal_interval, (u32)short_cal_interval);
 845
 846         ieee80211_queue_delayed_work(common->hw, &priv->ani_work,
 847                                      msecs_to_jiffies(cal_interval));
 848 }
 849
 850 /**********************/
 851 /* mac80211 Callbacks */
 852 /**********************/
 853
 854 static void ath9k_htc_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
 855 {
 856         struct ieee80211_hdr *hdr;
 857         struct ath9k_htc_priv *priv = hw->priv;
 858         struct ath_common *common = ath9k_hw_common(priv->ah);
 859         int padpos, padsize, ret, slot;
 860
 861         hdr = (struct ieee80211_hdr *) skb->data;
 862
 863         /* Add the padding after the header if this is not already done */
 864         padpos = ath9k_cmn_padpos(hdr->frame_control);
 865         padsize = padpos & 3;
 866         if (padsize && skb->len > padpos) {
 867                 if (skb_headroom(skb) < padsize) {
 868                         ath_dbg(common, XMIT, "No room for padding\n");
 869                         goto fail_tx;
 870                 }
 871                 skb_push(skb, padsize);
 872                 memmove(skb->data, skb->data + padsize, padpos);
 873         }
 874
 875         slot = ath9k_htc_tx_get_slot(priv);
 876         if (slot < 0) {
 877                 ath_dbg(common, XMIT, "No free TX slot\n");
 878                 goto fail_tx;
 879         }
 880
 881         ret = ath9k_htc_tx_start(priv, skb, slot, false);
 882         if (ret != 0) {
 883                 ath_dbg(common, XMIT, "Tx failed\n");
 884                 goto clear_slot;
 885         }
 886
 887         ath9k_htc_check_stop_queues(priv);
 888
 889         return;
 890
 891 clear_slot:
 892         ath9k_htc_tx_clear_slot(priv, slot);
 893 fail_tx:
 894         dev_kfree_skb_any(skb);
 895 }
 896
 897 static int ath9k_htc_start(struct ieee80211_hw *hw)
 898 {
 899         struct ath9k_htc_priv *priv = hw->priv;
 900         struct ath_hw *ah = priv->ah;
 901         struct ath_common *common = ath9k_hw_common(ah);
 902         struct ieee80211_channel *curchan = hw->conf.channel;
 903         struct ath9k_channel *init_channel;
 904         int ret = 0;
 905         enum htc_phymode mode;
 906         __be16 htc_mode;
 907         u8 cmd_rsp;
 908
 909         mutex_lock(&priv->mutex);
 910
 911         ath_dbg(common, CONFIG,
 912                 "Starting driver with initial channel: %d MHz\n",
 913                 curchan->center_freq);
 914
 915         /* Ensure that HW is awake before flushing RX */
 916         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
 917         WMI_CMD(WMI_FLUSH_RECV_CMDID);
 918
 919         /* setup initial channel */
 920         init_channel = ath9k_cmn_get_curchannel(hw, ah);
 921
 922         ath9k_hw_htc_resetinit(ah);
 923         ret = ath9k_hw_reset(ah, init_channel, ah->caldata, false);
 924         if (ret) {
 925                 ath_err(common,
 926                         "Unable to reset hardware; reset status %d (freq %u MHz)\n",
 927                         ret, curchan->center_freq);
 928                 mutex_unlock(&priv->mutex);
 929                 return ret;
 930         }
 931
 932         ath9k_cmn_update_txpow(ah, priv->curtxpow, priv->txpowlimit,
 933                                &priv->curtxpow);
 934
 935         mode = ath9k_htc_get_curmode(priv, init_channel);
 936         htc_mode = cpu_to_be16(mode);
 937         WMI_CMD_BUF(WMI_SET_MODE_CMDID, &htc_mode);
 938         WMI_CMD(WMI_ATH_INIT_CMDID);
 939         WMI_CMD(WMI_START_RECV_CMDID);
 940
 941         ath9k_host_rx_init(priv);
 942
 943         ret = ath9k_htc_update_cap_target(priv, 0);
 944         if (ret)
 945                 ath_dbg(common, CONFIG,
 946                         "Failed to update capability in target\n");
 947
 948         priv->op_flags &= ~OP_INVALID;
 949         htc_start(priv->htc);
 950
 951         spin_lock_bh(&priv->tx.tx_lock);
 952         priv->tx.flags &= ~ATH9K_HTC_OP_TX_QUEUES_STOP;
 953         spin_unlock_bh(&priv->tx.tx_lock);
 954
 955         ieee80211_wake_queues(hw);
 956
 957         mod_timer(&priv->tx.cleanup_timer,
 958                   jiffies + msecs_to_jiffies(ATH9K_HTC_TX_CLEANUP_INTERVAL));
 959
 960         if (ath9k_hw_get_btcoex_scheme(ah) == ATH_BTCOEX_CFG_3WIRE) {
 961                 ath9k_hw_btcoex_set_weight(ah, AR_BT_COEX_WGHT,
 962                                            AR_STOMP_LOW_WLAN_WGHT);
 963                 ath9k_hw_btcoex_enable(ah);
 964                 ath_htc_resume_btcoex_work(priv);
 965         }
 966         mutex_unlock(&priv->mutex);
 967
 968         return ret;
 969 }
 970
 971 static void ath9k_htc_stop(struct ieee80211_hw *hw)
 972 {
 973         struct ath9k_htc_priv *priv = hw->priv;
 974         struct ath_hw *ah = priv->ah;
 975         struct ath_common *common = ath9k_hw_common(ah);
 976         int ret __attribute__ ((unused));
 977         u8 cmd_rsp;
 978
 979         mutex_lock(&priv->mutex);
 980
 981         if (priv->op_flags & OP_INVALID) {
 982                 ath_dbg(common, ANY, "Device not present\n");
 983                 mutex_unlock(&priv->mutex);
 984                 return;
 985         }
 986
 987         ath9k_htc_ps_wakeup(priv);
 988
 989         WMI_CMD(WMI_DISABLE_INTR_CMDID);
 990         WMI_CMD(WMI_DRAIN_TXQ_ALL_CMDID);
 991         WMI_CMD(WMI_STOP_RECV_CMDID);
 992
 993         tasklet_kill(&priv->rx_tasklet);
 994
 995         del_timer_sync(&priv->tx.cleanup_timer);
 996         ath9k_htc_tx_drain(priv);
 997         ath9k_wmi_event_drain(priv);
 998
 999         mutex_unlock(&priv->mutex);
1000
1001         /* Cancel all the running timers/work .. */
1002         cancel_work_sync(&priv->fatal_work);
1003         cancel_work_sync(&priv->ps_work);
1004
1005 #ifdef CONFIG_MAC80211_LEDS
1006         cancel_work_sync(&priv->led_work);
1007 #endif
1008         ath9k_htc_stop_ani(priv);
1009
1010         mutex_lock(&priv->mutex);
1011
1012         if (ah->btcoex_hw.enabled &&
1013             ath9k_hw_get_btcoex_scheme(ah) != ATH_BTCOEX_CFG_NONE) {
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, 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, CONFIG, "Attach a VIF of type: %d at idx: %d\n",
1124                 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, 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, CONFIG, "not-idle: enabling radio\n");
1206                         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1207                         ath9k_htc_radio_enable(hw);
1208                 }
1209         }
1210
1211         /*
1212          * Monitor interface should be added before
1213          * IEEE80211_CONF_CHANGE_CHANNEL is handled.
1214          */
1215         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
1216                 if ((conf->flags & IEEE80211_CONF_MONITOR) &&
1217                     !priv->ah->is_monitoring)
1218                         ath9k_htc_add_monitor_interface(priv);
1219                 else if (priv->ah->is_monitoring)
1220                         ath9k_htc_remove_monitor_interface(priv);
1221         }
1222
1223         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1224                 struct ieee80211_channel *curchan = hw->conf.channel;
1225                 int pos = curchan->hw_value;
1226
1227                 ath_dbg(common, CONFIG, "Set channel: %d MHz\n",
1228                         curchan->center_freq);
1229
1230                 ath9k_cmn_update_ichannel(&priv->ah->channels[pos],
1231                                           hw->conf.channel,
1232                                           hw->conf.channel_type);
1233
1234                 if (ath9k_htc_set_channel(priv, hw, &priv->ah->channels[pos]) < 0) {
1235                         ath_err(common, "Unable to set channel\n");
1236                         mutex_unlock(&priv->mutex);
1237                         return -EINVAL;
1238                 }
1239
1240         }
1241
1242         if (changed & IEEE80211_CONF_CHANGE_PS) {
1243                 if (conf->flags & IEEE80211_CONF_PS) {
1244                         ath9k_htc_setpower(priv, ATH9K_PM_NETWORK_SLEEP);
1245                         priv->ps_enabled = true;
1246                 } else {
1247                         priv->ps_enabled = false;
1248                         cancel_work_sync(&priv->ps_work);
1249                         ath9k_htc_setpower(priv, ATH9K_PM_AWAKE);
1250                 }
1251         }
1252
1253         if (changed & IEEE80211_CONF_CHANGE_POWER) {
1254                 priv->txpowlimit = 2 * conf->power_level;
1255                 ath9k_cmn_update_txpow(priv->ah, priv->curtxpow,
1256                                        priv->txpowlimit, &priv->curtxpow);
1257         }
1258
1259         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1260                 mutex_lock(&priv->htc_pm_lock);
1261                 if (!priv->ps_idle) {
1262                         mutex_unlock(&priv->htc_pm_lock);
1263                         goto out;
1264                 }
1265                 mutex_unlock(&priv->htc_pm_lock);
1266
1267                 ath_dbg(common, CONFIG, "idle: disabling radio\n");
1268                 ath9k_htc_radio_disable(hw);
1269         }
1270
1271 out:
1272         mutex_unlock(&priv->mutex);
1273         return 0;
1274 }
1275
1276 #define SUPPORTED_FILTERS                       \
1277         (FIF_PROMISC_IN_BSS |                   \
1278         FIF_ALLMULTI |                          \
1279         FIF_CONTROL |                           \
1280         FIF_PSPOLL |                            \
1281         FIF_OTHER_BSS |                         \
1282         FIF_BCN_PRBRESP_PROMISC |               \
1283         FIF_PROBE_REQ |                         \
1284         FIF_FCSFAIL)
1285
1286 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1287                                        unsigned int changed_flags,
1288                                        unsigned int *total_flags,
1289                                        u64 multicast)
1290 {
1291         struct ath9k_htc_priv *priv = hw->priv;
1292         u32 rfilt;
1293
1294         mutex_lock(&priv->mutex);
1295         changed_flags &= SUPPORTED_FILTERS;
1296         *total_flags &= SUPPORTED_FILTERS;
1297
1298         if (priv->op_flags & OP_INVALID) {
1299                 ath_dbg(ath9k_hw_common(priv->ah), ANY,
1300                         "Unable to configure filter on invalid state\n");
1301                 mutex_unlock(&priv->mutex);
1302                 return;
1303         }
1304         ath9k_htc_ps_wakeup(priv);
1305
1306         priv->rxfilter = *total_flags;
1307         rfilt = ath9k_htc_calcrxfilter(priv);
1308         ath9k_hw_setrxfilter(priv->ah, rfilt);
1309
1310         ath_dbg(ath9k_hw_common(priv->ah), CONFIG, "Set HW RX filter: 0x%x\n",
1311                 rfilt);
1312
1313         ath9k_htc_ps_restore(priv);
1314         mutex_unlock(&priv->mutex);
1315 }
1316
1317 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1318                              struct ieee80211_vif *vif,
1319                              struct ieee80211_sta *sta)
1320 {
1321         struct ath9k_htc_priv *priv = hw->priv;
1322         int ret;
1323
1324         mutex_lock(&priv->mutex);
1325         ath9k_htc_ps_wakeup(priv);
1326         ret = ath9k_htc_add_station(priv, vif, sta);
1327         if (!ret)
1328                 ath9k_htc_init_rate(priv, sta);
1329         ath9k_htc_ps_restore(priv);
1330         mutex_unlock(&priv->mutex);
1331
1332         return ret;
1333 }
1334
1335 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1336                                 struct ieee80211_vif *vif,
1337                                 struct ieee80211_sta *sta)
1338 {
1339         struct ath9k_htc_priv *priv = hw->priv;
1340         struct ath9k_htc_sta *ista;
1341         int ret;
1342
1343         mutex_lock(&priv->mutex);
1344         ath9k_htc_ps_wakeup(priv);
1345         ista = (struct ath9k_htc_sta *) sta->drv_priv;
1346         htc_sta_drain(priv->htc, ista->index);
1347         ret = ath9k_htc_remove_station(priv, vif, sta);
1348         ath9k_htc_ps_restore(priv);
1349         mutex_unlock(&priv->mutex);
1350
1351         return ret;
1352 }
1353
1354 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw,
1355                              struct ieee80211_vif *vif, u16 queue,
1356                              const struct ieee80211_tx_queue_params *params)
1357 {
1358         struct ath9k_htc_priv *priv = hw->priv;
1359         struct ath_common *common = ath9k_hw_common(priv->ah);
1360         struct ath9k_tx_queue_info qi;
1361         int ret = 0, qnum;
1362
1363         if (queue >= WME_NUM_AC)
1364                 return 0;
1365
1366         mutex_lock(&priv->mutex);
1367         ath9k_htc_ps_wakeup(priv);
1368
1369         memset(&qi, 0, sizeof(struct ath9k_tx_queue_info));
1370
1371         qi.tqi_aifs = params->aifs;
1372         qi.tqi_cwmin = params->cw_min;
1373         qi.tqi_cwmax = params->cw_max;
1374         qi.tqi_burstTime = params->txop;
1375
1376         qnum = get_hw_qnum(queue, priv->hwq_map);
1377
1378         ath_dbg(common, CONFIG,
1379                 "Configure tx [queue/hwq] [%d/%d],  aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n",
1380                 queue, qnum, params->aifs, params->cw_min,
1381                 params->cw_max, params->txop);
1382
1383         ret = ath_htc_txq_update(priv, qnum, &qi);
1384         if (ret) {
1385                 ath_err(common, "TXQ Update failed\n");
1386                 goto out;
1387         }
1388
1389         if ((priv->ah->opmode == NL80211_IFTYPE_ADHOC) &&
1390             (qnum == priv->hwq_map[WME_AC_BE]))
1391                     ath9k_htc_beaconq_config(priv);
1392 out:
1393         ath9k_htc_ps_restore(priv);
1394         mutex_unlock(&priv->mutex);
1395
1396         return ret;
1397 }
1398
1399 static int ath9k_htc_set_key(struct ieee80211_hw *hw,
1400                              enum set_key_cmd cmd,
1401                              struct ieee80211_vif *vif,
1402                              struct ieee80211_sta *sta,
1403                              struct ieee80211_key_conf *key)
1404 {
1405         struct ath9k_htc_priv *priv = hw->priv;
1406         struct ath_common *common = ath9k_hw_common(priv->ah);
1407         int ret = 0;
1408
1409         if (htc_modparam_nohwcrypt)
1410                 return -ENOSPC;
1411
1412         if ((vif->type == NL80211_IFTYPE_ADHOC ||
1413              vif->type == NL80211_IFTYPE_MESH_POINT) &&
1414             (key->cipher == WLAN_CIPHER_SUITE_TKIP ||
1415              key->cipher == WLAN_CIPHER_SUITE_CCMP) &&
1416             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
1417                 /*
1418                  * For now, disable hw crypto for the RSN IBSS group keys. This
1419                  * could be optimized in the future to use a modified key cache
1420                  * design to support per-STA RX GTK, but until that gets
1421                  * implemented, use of software crypto for group addressed
1422                  * frames is a acceptable to allow RSN IBSS to be used.
1423                  */
1424                 return -EOPNOTSUPP;
1425         }
1426
1427         mutex_lock(&priv->mutex);
1428         ath_dbg(common, CONFIG, "Set HW Key\n");
1429         ath9k_htc_ps_wakeup(priv);
1430
1431         switch (cmd) {
1432         case SET_KEY:
1433                 ret = ath_key_config(common, vif, sta, key);
1434                 if (ret >= 0) {
1435                         key->hw_key_idx = ret;
1436                         /* push IV and Michael MIC generation to stack */
1437                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1438                         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1439                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1440                         if (priv->ah->sw_mgmt_crypto &&
1441                             key->cipher == WLAN_CIPHER_SUITE_CCMP)
1442                                 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1443                         ret = 0;
1444                 }
1445                 break;
1446         case DISABLE_KEY:
1447                 ath_key_delete(common, key);
1448                 break;
1449         default:
1450                 ret = -EINVAL;
1451         }
1452
1453         ath9k_htc_ps_restore(priv);
1454         mutex_unlock(&priv->mutex);
1455
1456         return ret;
1457 }
1458
1459 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1460 {
1461         struct ath_common *common = ath9k_hw_common(priv->ah);
1462
1463         ath9k_hw_write_associd(priv->ah);
1464         ath_dbg(common, CONFIG, "BSSID: %pM aid: 0x%x\n",
1465                 common->curbssid, common->curaid);
1466 }
1467
1468 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1469 {
1470         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
1471         struct ath_common *common = ath9k_hw_common(priv->ah);
1472         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1473
1474         if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) {
1475                 common->curaid = bss_conf->aid;
1476                 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1477         }
1478 }
1479
1480 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1481 {
1482         if (priv->num_sta_assoc_vif == 1) {
1483                 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1484                                                            ath9k_htc_bss_iter, priv);
1485                 ath9k_htc_set_bssid(priv);
1486         }
1487 }
1488
1489 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1490                                        struct ieee80211_vif *vif,
1491                                        struct ieee80211_bss_conf *bss_conf,
1492                                        u32 changed)
1493 {
1494         struct ath9k_htc_priv *priv = hw->priv;
1495         struct ath_hw *ah = priv->ah;
1496         struct ath_common *common = ath9k_hw_common(ah);
1497
1498         mutex_lock(&priv->mutex);
1499         ath9k_htc_ps_wakeup(priv);
1500
1501         if (changed & BSS_CHANGED_ASSOC) {
1502                 ath_dbg(common, CONFIG, "BSS Changed ASSOC %d\n",
1503                         bss_conf->assoc);
1504
1505                 bss_conf->assoc ?
1506                         priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1507
1508                 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1509                         if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
1510                                 ath9k_htc_start_ani(priv);
1511                         else if (priv->num_sta_assoc_vif == 0)
1512                                 ath9k_htc_stop_ani(priv);
1513                 }
1514         }
1515
1516         if (changed & BSS_CHANGED_BSSID) {
1517                 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1518                         common->curaid = bss_conf->aid;
1519                         memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1520                         ath9k_htc_set_bssid(priv);
1521                 } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1522                         ath9k_htc_choose_set_bssid(priv);
1523                 }
1524         }
1525
1526         if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1527                 ath_dbg(common, CONFIG, "Beacon enabled for BSS: %pM\n",
1528                         bss_conf->bssid);
1529                 ath9k_htc_set_tsfadjust(priv, vif);
1530                 priv->op_flags |= OP_ENABLE_BEACON;
1531                 ath9k_htc_beacon_config(priv, vif);
1532         }
1533
1534         if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1535                 /*
1536                  * Disable SWBA interrupt only if there are no
1537                  * AP/IBSS interfaces.
1538                  */
1539                 if ((priv->num_ap_vif <= 1) || priv->num_ibss_vif) {
1540                         ath_dbg(common, CONFIG,
1541                                 "Beacon disabled for BSS: %pM\n",
1542                                 bss_conf->bssid);
1543                         priv->op_flags &= ~OP_ENABLE_BEACON;
1544                         ath9k_htc_beacon_config(priv, vif);
1545                 }
1546         }
1547
1548         if (changed & BSS_CHANGED_BEACON_INT) {
1549                 /*
1550                  * Reset the HW TSF for the first AP interface.
1551                  */
1552                 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1553                     (priv->nvifs == 1) &&
1554                     (priv->num_ap_vif == 1) &&
1555                     (vif->type == NL80211_IFTYPE_AP)) {
1556                         priv->op_flags |= OP_TSF_RESET;
1557                 }
1558                 ath_dbg(common, CONFIG,
1559                         "Beacon interval changed for BSS: %pM\n",
1560                         bss_conf->bssid);
1561                 ath9k_htc_beacon_config(priv, vif);
1562         }
1563
1564         if (changed & BSS_CHANGED_ERP_SLOT) {
1565                 if (bss_conf->use_short_slot)
1566                         ah->slottime = 9;
1567                 else
1568                         ah->slottime = 20;
1569
1570                 ath9k_hw_init_global_settings(ah);
1571         }
1572
1573         if (changed & BSS_CHANGED_HT)
1574                 ath9k_htc_update_rate(priv, vif, bss_conf);
1575
1576         ath9k_htc_ps_restore(priv);
1577         mutex_unlock(&priv->mutex);
1578 }
1579
1580 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw,
1581                              struct ieee80211_vif *vif)
1582 {
1583         struct ath9k_htc_priv *priv = hw->priv;
1584         u64 tsf;
1585
1586         mutex_lock(&priv->mutex);
1587         ath9k_htc_ps_wakeup(priv);
1588         tsf = ath9k_hw_gettsf64(priv->ah);
1589         ath9k_htc_ps_restore(priv);
1590         mutex_unlock(&priv->mutex);
1591
1592         return tsf;
1593 }
1594
1595 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw,
1596                               struct ieee80211_vif *vif, u64 tsf)
1597 {
1598         struct ath9k_htc_priv *priv = hw->priv;
1599
1600         mutex_lock(&priv->mutex);
1601         ath9k_htc_ps_wakeup(priv);
1602         ath9k_hw_settsf64(priv->ah, tsf);
1603         ath9k_htc_ps_restore(priv);
1604         mutex_unlock(&priv->mutex);
1605 }
1606
1607 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw,
1608                                 struct ieee80211_vif *vif)
1609 {
1610         struct ath9k_htc_priv *priv = hw->priv;
1611
1612         mutex_lock(&priv->mutex);
1613         ath9k_htc_ps_wakeup(priv);
1614         ath9k_hw_reset_tsf(priv->ah);
1615         ath9k_htc_ps_restore(priv);
1616         mutex_unlock(&priv->mutex);
1617 }
1618
1619 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1620                                   struct ieee80211_vif *vif,
1621                                   enum ieee80211_ampdu_mlme_action action,
1622                                   struct ieee80211_sta *sta,
1623                                   u16 tid, u16 *ssn, u8 buf_size)
1624 {
1625         struct ath9k_htc_priv *priv = hw->priv;
1626         struct ath9k_htc_sta *ista;
1627         int ret = 0;
1628
1629         mutex_lock(&priv->mutex);
1630         ath9k_htc_ps_wakeup(priv);
1631
1632         switch (action) {
1633         case IEEE80211_AMPDU_RX_START:
1634                 break;
1635         case IEEE80211_AMPDU_RX_STOP:
1636                 break;
1637         case IEEE80211_AMPDU_TX_START:
1638                 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1639                 if (!ret)
1640                         ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1641                 break;
1642         case IEEE80211_AMPDU_TX_STOP:
1643                 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1644                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1645                 break;
1646         case IEEE80211_AMPDU_TX_OPERATIONAL:
1647                 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1648                 spin_lock_bh(&priv->tx.tx_lock);
1649                 ista->tid_state[tid] = AGGR_OPERATIONAL;
1650                 spin_unlock_bh(&priv->tx.tx_lock);
1651                 break;
1652         default:
1653                 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1654         }
1655
1656         ath9k_htc_ps_restore(priv);
1657         mutex_unlock(&priv->mutex);
1658
1659         return ret;
1660 }
1661
1662 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
1663 {
1664         struct ath9k_htc_priv *priv = hw->priv;
1665
1666         mutex_lock(&priv->mutex);
1667         spin_lock_bh(&priv->beacon_lock);
1668         priv->op_flags |= OP_SCANNING;
1669         spin_unlock_bh(&priv->beacon_lock);
1670         cancel_work_sync(&priv->ps_work);
1671         ath9k_htc_stop_ani(priv);
1672         mutex_unlock(&priv->mutex);
1673 }
1674
1675 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
1676 {
1677         struct ath9k_htc_priv *priv = hw->priv;
1678
1679         mutex_lock(&priv->mutex);
1680         spin_lock_bh(&priv->beacon_lock);
1681         priv->op_flags &= ~OP_SCANNING;
1682         spin_unlock_bh(&priv->beacon_lock);
1683         ath9k_htc_ps_wakeup(priv);
1684         ath9k_htc_vif_reconfig(priv);
1685         ath9k_htc_ps_restore(priv);
1686         mutex_unlock(&priv->mutex);
1687 }
1688
1689 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1690 {
1691         return 0;
1692 }
1693
1694 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1695                                          u8 coverage_class)
1696 {
1697         struct ath9k_htc_priv *priv = hw->priv;
1698
1699         mutex_lock(&priv->mutex);
1700         ath9k_htc_ps_wakeup(priv);
1701         priv->ah->coverage_class = coverage_class;
1702         ath9k_hw_init_global_settings(priv->ah);
1703         ath9k_htc_ps_restore(priv);
1704         mutex_unlock(&priv->mutex);
1705 }
1706
1707 /*
1708  * Currently, this is used only for selecting the minimum rate
1709  * for management frames, rate selection for data frames remain
1710  * unaffected.
1711  */
1712 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1713                                       struct ieee80211_vif *vif,
1714                                       const struct cfg80211_bitrate_mask *mask)
1715 {
1716         struct ath9k_htc_priv *priv = hw->priv;
1717         struct ath_common *common = ath9k_hw_common(priv->ah);
1718         struct ath9k_htc_target_rate_mask tmask;
1719         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1720         int ret = 0;
1721         u8 cmd_rsp;
1722
1723         memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1724
1725         tmask.vif_index = avp->index;
1726         tmask.band = IEEE80211_BAND_2GHZ;
1727         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_2GHZ].legacy);
1728
1729         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1730         if (ret) {
1731                 ath_err(common,
1732                         "Unable to set 2G rate mask for "
1733                         "interface at idx: %d\n", avp->index);
1734                 goto out;
1735         }
1736
1737         tmask.band = IEEE80211_BAND_5GHZ;
1738         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_5GHZ].legacy);
1739
1740         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1741         if (ret) {
1742                 ath_err(common,
1743                         "Unable to set 5G rate mask for "
1744                         "interface at idx: %d\n", avp->index);
1745                 goto out;
1746         }
1747
1748         ath_dbg(common, CONFIG, "Set bitrate masks: 0x%x, 0x%x\n",
1749                 mask->control[IEEE80211_BAND_2GHZ].legacy,
1750                 mask->control[IEEE80211_BAND_5GHZ].legacy);
1751 out:
1752         return ret;
1753 }
1754
1755
1756 static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
1757                                struct ieee80211_low_level_stats *stats)
1758 {
1759         struct ath9k_htc_priv *priv = hw->priv;
1760         struct ath_hw *ah = priv->ah;
1761         struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1762
1763         stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1764         stats->dot11RTSFailureCount = mib_stats->rts_bad;
1765         stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1766         stats->dot11RTSSuccessCount = mib_stats->rts_good;
1767
1768         return 0;
1769 }
1770
1771 struct ieee80211_ops ath9k_htc_ops = {
1772         .tx                 = ath9k_htc_tx,
1773         .start              = ath9k_htc_start,
1774         .stop               = ath9k_htc_stop,
1775         .add_interface      = ath9k_htc_add_interface,
1776         .remove_interface   = ath9k_htc_remove_interface,
1777         .config             = ath9k_htc_config,
1778         .configure_filter   = ath9k_htc_configure_filter,
1779         .sta_add            = ath9k_htc_sta_add,
1780         .sta_remove         = ath9k_htc_sta_remove,
1781         .conf_tx            = ath9k_htc_conf_tx,
1782         .bss_info_changed   = ath9k_htc_bss_info_changed,
1783         .set_key            = ath9k_htc_set_key,
1784         .get_tsf            = ath9k_htc_get_tsf,
1785         .set_tsf            = ath9k_htc_set_tsf,
1786         .reset_tsf          = ath9k_htc_reset_tsf,
1787         .ampdu_action       = ath9k_htc_ampdu_action,
1788         .sw_scan_start      = ath9k_htc_sw_scan_start,
1789         .sw_scan_complete   = ath9k_htc_sw_scan_complete,
1790         .set_rts_threshold  = ath9k_htc_set_rts_threshold,
1791         .rfkill_poll        = ath9k_htc_rfkill_poll_state,
1792         .set_coverage_class = ath9k_htc_set_coverage_class,
1793         .set_bitrate_mask   = ath9k_htc_set_bitrate_mask,
1794         .get_stats          = ath9k_htc_get_stats,
1795 };