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                                                    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 (priv->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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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, ATH_DBG_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 (ah->btcoex_hw.scheme == 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, ATH_DBG_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_btcoex_disable(ah);
1014                 if (ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
1015                         ath_htc_cancel_btcoex_work(priv);
1016         }
1017
1018         /* Remove a monitor interface if it's present. */
1019         if (priv->ah->is_monitoring)
1020                 ath9k_htc_remove_monitor_interface(priv);
1021
1022         ath9k_hw_phy_disable(ah);
1023         ath9k_hw_disable(ah);
1024         ath9k_htc_ps_restore(priv);
1025         ath9k_htc_setpower(priv, ATH9K_PM_FULL_SLEEP);
1026
1027         priv->op_flags |= OP_INVALID;
1028
1029         ath_dbg(common, ATH_DBG_CONFIG, "Driver halt\n");
1030         mutex_unlock(&priv->mutex);
1031 }
1032
1033 static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
1034                                    struct ieee80211_vif *vif)
1035 {
1036         struct ath9k_htc_priv *priv = hw->priv;
1037         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1038         struct ath_common *common = ath9k_hw_common(priv->ah);
1039         struct ath9k_htc_target_vif hvif;
1040         int ret = 0;
1041         u8 cmd_rsp;
1042
1043         mutex_lock(&priv->mutex);
1044
1045         if (priv->nvifs >= ATH9K_HTC_MAX_VIF) {
1046                 mutex_unlock(&priv->mutex);
1047                 return -ENOBUFS;
1048         }
1049
1050         if (priv->num_ibss_vif ||
1051             (priv->nvifs && vif->type == NL80211_IFTYPE_ADHOC)) {
1052                 ath_err(common, "IBSS coexistence with other modes is not allowed\n");
1053                 mutex_unlock(&priv->mutex);
1054                 return -ENOBUFS;
1055         }
1056
1057         if (((vif->type == NL80211_IFTYPE_AP) ||
1058              (vif->type == NL80211_IFTYPE_ADHOC)) &&
1059             ((priv->num_ap_vif + priv->num_ibss_vif) >= ATH9K_HTC_MAX_BCN_VIF)) {
1060                 ath_err(common, "Max. number of beaconing interfaces reached\n");
1061                 mutex_unlock(&priv->mutex);
1062                 return -ENOBUFS;
1063         }
1064
1065         ath9k_htc_ps_wakeup(priv);
1066         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1067         memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1068
1069         switch (vif->type) {
1070         case NL80211_IFTYPE_STATION:
1071                 hvif.opmode = HTC_M_STA;
1072                 break;
1073         case NL80211_IFTYPE_ADHOC:
1074                 hvif.opmode = HTC_M_IBSS;
1075                 break;
1076         case NL80211_IFTYPE_AP:
1077                 hvif.opmode = HTC_M_HOSTAP;
1078                 break;
1079         default:
1080                 ath_err(common,
1081                         "Interface type %d not yet supported\n", vif->type);
1082                 ret = -EOPNOTSUPP;
1083                 goto out;
1084         }
1085
1086         /* Index starts from zero on the target */
1087         avp->index = hvif.index = ffz(priv->vif_slot);
1088         hvif.rtsthreshold = cpu_to_be16(2304);
1089         WMI_CMD_BUF(WMI_VAP_CREATE_CMDID, &hvif);
1090         if (ret)
1091                 goto out;
1092
1093         /*
1094          * We need a node in target to tx mgmt frames
1095          * before association.
1096          */
1097         ret = ath9k_htc_add_station(priv, vif, NULL);
1098         if (ret) {
1099                 WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1100                 goto out;
1101         }
1102
1103         ath9k_htc_set_bssid_mask(priv, vif);
1104
1105         priv->vif_slot |= (1 << avp->index);
1106         priv->nvifs++;
1107
1108         INC_VIF(priv, vif->type);
1109
1110         if ((vif->type == NL80211_IFTYPE_AP) ||
1111             (vif->type == NL80211_IFTYPE_ADHOC))
1112                 ath9k_htc_assign_bslot(priv, vif);
1113
1114         ath9k_htc_set_opmode(priv);
1115
1116         if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1117             !(priv->op_flags & OP_ANI_RUNNING)) {
1118                 ath9k_hw_set_tsfadjust(priv->ah, 1);
1119                 ath9k_htc_start_ani(priv);
1120         }
1121
1122         ath_dbg(common, ATH_DBG_CONFIG,
1123                 "Attach a VIF of type: %d at idx: %d\n", vif->type, avp->index);
1124
1125 out:
1126         ath9k_htc_ps_restore(priv);
1127         mutex_unlock(&priv->mutex);
1128
1129         return ret;
1130 }
1131
1132 static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
1133                                        struct ieee80211_vif *vif)
1134 {
1135         struct ath9k_htc_priv *priv = hw->priv;
1136         struct ath_common *common = ath9k_hw_common(priv->ah);
1137         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1138         struct ath9k_htc_target_vif hvif;
1139         int ret = 0;
1140         u8 cmd_rsp;
1141
1142         mutex_lock(&priv->mutex);
1143         ath9k_htc_ps_wakeup(priv);
1144
1145         memset(&hvif, 0, sizeof(struct ath9k_htc_target_vif));
1146         memcpy(&hvif.myaddr, vif->addr, ETH_ALEN);
1147         hvif.index = avp->index;
1148         WMI_CMD_BUF(WMI_VAP_REMOVE_CMDID, &hvif);
1149         if (ret) {
1150                 ath_err(common, "Unable to remove interface at idx: %d\n",
1151                         avp->index);
1152         }
1153         priv->nvifs--;
1154         priv->vif_slot &= ~(1 << avp->index);
1155
1156         ath9k_htc_remove_station(priv, vif, NULL);
1157
1158         DEC_VIF(priv, vif->type);
1159
1160         if ((vif->type == NL80211_IFTYPE_AP) ||
1161             (vif->type == NL80211_IFTYPE_ADHOC))
1162                 ath9k_htc_remove_bslot(priv, vif);
1163
1164         ath9k_htc_set_opmode(priv);
1165
1166         ath9k_htc_set_bssid_mask(priv, vif);
1167
1168         /*
1169          * Stop ANI only if there are no associated station interfaces.
1170          */
1171         if ((vif->type == NL80211_IFTYPE_AP) && (priv->num_ap_vif == 0)) {
1172                 priv->rearm_ani = false;
1173                 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1174                                                    ath9k_htc_vif_iter, priv);
1175                 if (!priv->rearm_ani)
1176                         ath9k_htc_stop_ani(priv);
1177         }
1178
1179         ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface at idx: %d\n", avp->index);
1180
1181         ath9k_htc_ps_restore(priv);
1182         mutex_unlock(&priv->mutex);
1183 }
1184
1185 static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed)
1186 {
1187         struct ath9k_htc_priv *priv = hw->priv;
1188         struct ath_common *common = ath9k_hw_common(priv->ah);
1189         struct ieee80211_conf *conf = &hw->conf;
1190
1191         mutex_lock(&priv->mutex);
1192
1193         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
1194                 bool enable_radio = false;
1195                 bool idle = !!(conf->flags & IEEE80211_CONF_IDLE);
1196
1197                 mutex_lock(&priv->htc_pm_lock);
1198                 if (!idle && priv->ps_idle)
1199                         enable_radio = true;
1200                 priv->ps_idle = idle;
1201                 mutex_unlock(&priv->htc_pm_lock);
1202
1203                 if (enable_radio) {
1204                         ath_dbg(common, ATH_DBG_CONFIG,
1205                                 "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, ATH_DBG_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, ATH_DBG_CONFIG,
1268                         "idle: disabling radio\n");
1269                 ath9k_htc_radio_disable(hw);
1270         }
1271
1272 out:
1273         mutex_unlock(&priv->mutex);
1274         return 0;
1275 }
1276
1277 #define SUPPORTED_FILTERS                       \
1278         (FIF_PROMISC_IN_BSS |                   \
1279         FIF_ALLMULTI |                          \
1280         FIF_CONTROL |                           \
1281         FIF_PSPOLL |                            \
1282         FIF_OTHER_BSS |                         \
1283         FIF_BCN_PRBRESP_PROMISC |               \
1284         FIF_PROBE_REQ |                         \
1285         FIF_FCSFAIL)
1286
1287 static void ath9k_htc_configure_filter(struct ieee80211_hw *hw,
1288                                        unsigned int changed_flags,
1289                                        unsigned int *total_flags,
1290                                        u64 multicast)
1291 {
1292         struct ath9k_htc_priv *priv = hw->priv;
1293         u32 rfilt;
1294
1295         mutex_lock(&priv->mutex);
1296         changed_flags &= SUPPORTED_FILTERS;
1297         *total_flags &= SUPPORTED_FILTERS;
1298
1299         if (priv->op_flags & OP_INVALID) {
1300                 ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_ANY,
1301                         "Unable to configure filter on invalid state\n");
1302                 mutex_unlock(&priv->mutex);
1303                 return;
1304         }
1305         ath9k_htc_ps_wakeup(priv);
1306
1307         priv->rxfilter = *total_flags;
1308         rfilt = ath9k_htc_calcrxfilter(priv);
1309         ath9k_hw_setrxfilter(priv->ah, rfilt);
1310
1311         ath_dbg(ath9k_hw_common(priv->ah), ATH_DBG_CONFIG,
1312                 "Set HW RX filter: 0x%x\n", rfilt);
1313
1314         ath9k_htc_ps_restore(priv);
1315         mutex_unlock(&priv->mutex);
1316 }
1317
1318 static int ath9k_htc_sta_add(struct ieee80211_hw *hw,
1319                              struct ieee80211_vif *vif,
1320                              struct ieee80211_sta *sta)
1321 {
1322         struct ath9k_htc_priv *priv = hw->priv;
1323         int ret;
1324
1325         mutex_lock(&priv->mutex);
1326         ath9k_htc_ps_wakeup(priv);
1327         ret = ath9k_htc_add_station(priv, vif, sta);
1328         if (!ret)
1329                 ath9k_htc_init_rate(priv, sta);
1330         ath9k_htc_ps_restore(priv);
1331         mutex_unlock(&priv->mutex);
1332
1333         return ret;
1334 }
1335
1336 static int ath9k_htc_sta_remove(struct ieee80211_hw *hw,
1337                                 struct ieee80211_vif *vif,
1338                                 struct ieee80211_sta *sta)
1339 {
1340         struct ath9k_htc_priv *priv = hw->priv;
1341         struct ath9k_htc_sta *ista;
1342         int ret;
1343
1344         mutex_lock(&priv->mutex);
1345         ath9k_htc_ps_wakeup(priv);
1346         ista = (struct ath9k_htc_sta *) sta->drv_priv;
1347         htc_sta_drain(priv->htc, ista->index);
1348         ret = ath9k_htc_remove_station(priv, vif, sta);
1349         ath9k_htc_ps_restore(priv);
1350         mutex_unlock(&priv->mutex);
1351
1352         return ret;
1353 }
1354
1355 static int ath9k_htc_conf_tx(struct ieee80211_hw *hw, 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, ATH_DBG_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         mutex_lock(&priv->mutex);
1413         ath_dbg(common, ATH_DBG_CONFIG, "Set HW Key\n");
1414         ath9k_htc_ps_wakeup(priv);
1415
1416         switch (cmd) {
1417         case SET_KEY:
1418                 ret = ath_key_config(common, vif, sta, key);
1419                 if (ret >= 0) {
1420                         key->hw_key_idx = ret;
1421                         /* push IV and Michael MIC generation to stack */
1422                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
1423                         if (key->cipher == WLAN_CIPHER_SUITE_TKIP)
1424                                 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
1425                         if (priv->ah->sw_mgmt_crypto &&
1426                             key->cipher == WLAN_CIPHER_SUITE_CCMP)
1427                                 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT;
1428                         ret = 0;
1429                 }
1430                 break;
1431         case DISABLE_KEY:
1432                 ath_key_delete(common, key);
1433                 break;
1434         default:
1435                 ret = -EINVAL;
1436         }
1437
1438         ath9k_htc_ps_restore(priv);
1439         mutex_unlock(&priv->mutex);
1440
1441         return ret;
1442 }
1443
1444 static void ath9k_htc_set_bssid(struct ath9k_htc_priv *priv)
1445 {
1446         struct ath_common *common = ath9k_hw_common(priv->ah);
1447
1448         ath9k_hw_write_associd(priv->ah);
1449         ath_dbg(common, ATH_DBG_CONFIG,
1450                 "BSSID: %pM aid: 0x%x\n",
1451                 common->curbssid, common->curaid);
1452 }
1453
1454 static void ath9k_htc_bss_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
1455 {
1456         struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
1457         struct ath_common *common = ath9k_hw_common(priv->ah);
1458         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
1459
1460         if ((vif->type == NL80211_IFTYPE_STATION) && bss_conf->assoc) {
1461                 common->curaid = bss_conf->aid;
1462                 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1463         }
1464 }
1465
1466 static void ath9k_htc_choose_set_bssid(struct ath9k_htc_priv *priv)
1467 {
1468         if (priv->num_sta_assoc_vif == 1) {
1469                 ieee80211_iterate_active_interfaces_atomic(priv->hw,
1470                                                            ath9k_htc_bss_iter, priv);
1471                 ath9k_htc_set_bssid(priv);
1472         }
1473 }
1474
1475 static void ath9k_htc_bss_info_changed(struct ieee80211_hw *hw,
1476                                        struct ieee80211_vif *vif,
1477                                        struct ieee80211_bss_conf *bss_conf,
1478                                        u32 changed)
1479 {
1480         struct ath9k_htc_priv *priv = hw->priv;
1481         struct ath_hw *ah = priv->ah;
1482         struct ath_common *common = ath9k_hw_common(ah);
1483
1484         mutex_lock(&priv->mutex);
1485         ath9k_htc_ps_wakeup(priv);
1486
1487         if (changed & BSS_CHANGED_ASSOC) {
1488                 ath_dbg(common, ATH_DBG_CONFIG, "BSS Changed ASSOC %d\n",
1489                         bss_conf->assoc);
1490
1491                 bss_conf->assoc ?
1492                         priv->num_sta_assoc_vif++ : priv->num_sta_assoc_vif--;
1493
1494                 if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1495                         if (bss_conf->assoc && (priv->num_sta_assoc_vif == 1))
1496                                 ath9k_htc_start_ani(priv);
1497                         else if (priv->num_sta_assoc_vif == 0)
1498                                 ath9k_htc_stop_ani(priv);
1499                 }
1500         }
1501
1502         if (changed & BSS_CHANGED_BSSID) {
1503                 if (priv->ah->opmode == NL80211_IFTYPE_ADHOC) {
1504                         common->curaid = bss_conf->aid;
1505                         memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN);
1506                         ath9k_htc_set_bssid(priv);
1507                 } else if (priv->ah->opmode == NL80211_IFTYPE_STATION) {
1508                         ath9k_htc_choose_set_bssid(priv);
1509                 }
1510         }
1511
1512         if ((changed & BSS_CHANGED_BEACON_ENABLED) && bss_conf->enable_beacon) {
1513                 ath_dbg(common, ATH_DBG_CONFIG,
1514                         "Beacon enabled for BSS: %pM\n", bss_conf->bssid);
1515                 ath9k_htc_set_tsfadjust(priv, vif);
1516                 priv->op_flags |= OP_ENABLE_BEACON;
1517                 ath9k_htc_beacon_config(priv, vif);
1518         }
1519
1520         if ((changed & BSS_CHANGED_BEACON_ENABLED) && !bss_conf->enable_beacon) {
1521                 /*
1522                  * Disable SWBA interrupt only if there are no
1523                  * AP/IBSS interfaces.
1524                  */
1525                 if ((priv->num_ap_vif <= 1) || priv->num_ibss_vif) {
1526                         ath_dbg(common, ATH_DBG_CONFIG,
1527                                 "Beacon disabled for BSS: %pM\n",
1528                                 bss_conf->bssid);
1529                         priv->op_flags &= ~OP_ENABLE_BEACON;
1530                         ath9k_htc_beacon_config(priv, vif);
1531                 }
1532         }
1533
1534         if (changed & BSS_CHANGED_BEACON_INT) {
1535                 /*
1536                  * Reset the HW TSF for the first AP interface.
1537                  */
1538                 if ((priv->ah->opmode == NL80211_IFTYPE_AP) &&
1539                     (priv->nvifs == 1) &&
1540                     (priv->num_ap_vif == 1) &&
1541                     (vif->type == NL80211_IFTYPE_AP)) {
1542                         priv->op_flags |= OP_TSF_RESET;
1543                 }
1544                 ath_dbg(common, ATH_DBG_CONFIG,
1545                         "Beacon interval changed for BSS: %pM\n",
1546                         bss_conf->bssid);
1547                 ath9k_htc_beacon_config(priv, vif);
1548         }
1549
1550         if (changed & BSS_CHANGED_ERP_SLOT) {
1551                 if (bss_conf->use_short_slot)
1552                         ah->slottime = 9;
1553                 else
1554                         ah->slottime = 20;
1555
1556                 ath9k_hw_init_global_settings(ah);
1557         }
1558
1559         if (changed & BSS_CHANGED_HT)
1560                 ath9k_htc_update_rate(priv, vif, bss_conf);
1561
1562         ath9k_htc_ps_restore(priv);
1563         mutex_unlock(&priv->mutex);
1564 }
1565
1566 static u64 ath9k_htc_get_tsf(struct ieee80211_hw *hw)
1567 {
1568         struct ath9k_htc_priv *priv = hw->priv;
1569         u64 tsf;
1570
1571         mutex_lock(&priv->mutex);
1572         ath9k_htc_ps_wakeup(priv);
1573         tsf = ath9k_hw_gettsf64(priv->ah);
1574         ath9k_htc_ps_restore(priv);
1575         mutex_unlock(&priv->mutex);
1576
1577         return tsf;
1578 }
1579
1580 static void ath9k_htc_set_tsf(struct ieee80211_hw *hw, u64 tsf)
1581 {
1582         struct ath9k_htc_priv *priv = hw->priv;
1583
1584         mutex_lock(&priv->mutex);
1585         ath9k_htc_ps_wakeup(priv);
1586         ath9k_hw_settsf64(priv->ah, tsf);
1587         ath9k_htc_ps_restore(priv);
1588         mutex_unlock(&priv->mutex);
1589 }
1590
1591 static void ath9k_htc_reset_tsf(struct ieee80211_hw *hw)
1592 {
1593         struct ath9k_htc_priv *priv = hw->priv;
1594
1595         mutex_lock(&priv->mutex);
1596         ath9k_htc_ps_wakeup(priv);
1597         ath9k_hw_reset_tsf(priv->ah);
1598         ath9k_htc_ps_restore(priv);
1599         mutex_unlock(&priv->mutex);
1600 }
1601
1602 static int ath9k_htc_ampdu_action(struct ieee80211_hw *hw,
1603                                   struct ieee80211_vif *vif,
1604                                   enum ieee80211_ampdu_mlme_action action,
1605                                   struct ieee80211_sta *sta,
1606                                   u16 tid, u16 *ssn, u8 buf_size)
1607 {
1608         struct ath9k_htc_priv *priv = hw->priv;
1609         struct ath9k_htc_sta *ista;
1610         int ret = 0;
1611
1612         mutex_lock(&priv->mutex);
1613         ath9k_htc_ps_wakeup(priv);
1614
1615         switch (action) {
1616         case IEEE80211_AMPDU_RX_START:
1617                 break;
1618         case IEEE80211_AMPDU_RX_STOP:
1619                 break;
1620         case IEEE80211_AMPDU_TX_START:
1621                 ret = ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1622                 if (!ret)
1623                         ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1624                 break;
1625         case IEEE80211_AMPDU_TX_STOP:
1626                 ath9k_htc_tx_aggr_oper(priv, vif, sta, action, tid);
1627                 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
1628                 break;
1629         case IEEE80211_AMPDU_TX_OPERATIONAL:
1630                 ista = (struct ath9k_htc_sta *) sta->drv_priv;
1631                 spin_lock_bh(&priv->tx.tx_lock);
1632                 ista->tid_state[tid] = AGGR_OPERATIONAL;
1633                 spin_unlock_bh(&priv->tx.tx_lock);
1634                 break;
1635         default:
1636                 ath_err(ath9k_hw_common(priv->ah), "Unknown AMPDU action\n");
1637         }
1638
1639         ath9k_htc_ps_restore(priv);
1640         mutex_unlock(&priv->mutex);
1641
1642         return ret;
1643 }
1644
1645 static void ath9k_htc_sw_scan_start(struct ieee80211_hw *hw)
1646 {
1647         struct ath9k_htc_priv *priv = hw->priv;
1648
1649         mutex_lock(&priv->mutex);
1650         spin_lock_bh(&priv->beacon_lock);
1651         priv->op_flags |= OP_SCANNING;
1652         spin_unlock_bh(&priv->beacon_lock);
1653         cancel_work_sync(&priv->ps_work);
1654         ath9k_htc_stop_ani(priv);
1655         mutex_unlock(&priv->mutex);
1656 }
1657
1658 static void ath9k_htc_sw_scan_complete(struct ieee80211_hw *hw)
1659 {
1660         struct ath9k_htc_priv *priv = hw->priv;
1661
1662         mutex_lock(&priv->mutex);
1663         spin_lock_bh(&priv->beacon_lock);
1664         priv->op_flags &= ~OP_SCANNING;
1665         spin_unlock_bh(&priv->beacon_lock);
1666         ath9k_htc_ps_wakeup(priv);
1667         ath9k_htc_vif_reconfig(priv);
1668         ath9k_htc_ps_restore(priv);
1669         mutex_unlock(&priv->mutex);
1670 }
1671
1672 static int ath9k_htc_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1673 {
1674         return 0;
1675 }
1676
1677 static void ath9k_htc_set_coverage_class(struct ieee80211_hw *hw,
1678                                          u8 coverage_class)
1679 {
1680         struct ath9k_htc_priv *priv = hw->priv;
1681
1682         mutex_lock(&priv->mutex);
1683         ath9k_htc_ps_wakeup(priv);
1684         priv->ah->coverage_class = coverage_class;
1685         ath9k_hw_init_global_settings(priv->ah);
1686         ath9k_htc_ps_restore(priv);
1687         mutex_unlock(&priv->mutex);
1688 }
1689
1690 /*
1691  * Currently, this is used only for selecting the minimum rate
1692  * for management frames, rate selection for data frames remain
1693  * unaffected.
1694  */
1695 static int ath9k_htc_set_bitrate_mask(struct ieee80211_hw *hw,
1696                                       struct ieee80211_vif *vif,
1697                                       const struct cfg80211_bitrate_mask *mask)
1698 {
1699         struct ath9k_htc_priv *priv = hw->priv;
1700         struct ath_common *common = ath9k_hw_common(priv->ah);
1701         struct ath9k_htc_target_rate_mask tmask;
1702         struct ath9k_htc_vif *avp = (void *)vif->drv_priv;
1703         int ret = 0;
1704         u8 cmd_rsp;
1705
1706         memset(&tmask, 0, sizeof(struct ath9k_htc_target_rate_mask));
1707
1708         tmask.vif_index = avp->index;
1709         tmask.band = IEEE80211_BAND_2GHZ;
1710         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_2GHZ].legacy);
1711
1712         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1713         if (ret) {
1714                 ath_err(common,
1715                         "Unable to set 2G rate mask for "
1716                         "interface at idx: %d\n", avp->index);
1717                 goto out;
1718         }
1719
1720         tmask.band = IEEE80211_BAND_5GHZ;
1721         tmask.mask = cpu_to_be32(mask->control[IEEE80211_BAND_5GHZ].legacy);
1722
1723         WMI_CMD_BUF(WMI_BITRATE_MASK_CMDID, &tmask);
1724         if (ret) {
1725                 ath_err(common,
1726                         "Unable to set 5G rate mask for "
1727                         "interface at idx: %d\n", avp->index);
1728                 goto out;
1729         }
1730
1731         ath_dbg(common, ATH_DBG_CONFIG,
1732                 "Set bitrate masks: 0x%x, 0x%x\n",
1733                 mask->control[IEEE80211_BAND_2GHZ].legacy,
1734                 mask->control[IEEE80211_BAND_5GHZ].legacy);
1735 out:
1736         return ret;
1737 }
1738
1739
1740 static int ath9k_htc_get_stats(struct ieee80211_hw *hw,
1741                                struct ieee80211_low_level_stats *stats)
1742 {
1743         struct ath9k_htc_priv *priv = hw->priv;
1744         struct ath_hw *ah = priv->ah;
1745         struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats;
1746
1747         stats->dot11ACKFailureCount = mib_stats->ackrcv_bad;
1748         stats->dot11RTSFailureCount = mib_stats->rts_bad;
1749         stats->dot11FCSErrorCount = mib_stats->fcs_bad;
1750         stats->dot11RTSSuccessCount = mib_stats->rts_good;
1751
1752         return 0;
1753 }
1754
1755 struct ieee80211_ops ath9k_htc_ops = {
1756         .tx                 = ath9k_htc_tx,
1757         .start              = ath9k_htc_start,
1758         .stop               = ath9k_htc_stop,
1759         .add_interface      = ath9k_htc_add_interface,
1760         .remove_interface   = ath9k_htc_remove_interface,
1761         .config             = ath9k_htc_config,
1762         .configure_filter   = ath9k_htc_configure_filter,
1763         .sta_add            = ath9k_htc_sta_add,
1764         .sta_remove         = ath9k_htc_sta_remove,
1765         .conf_tx            = ath9k_htc_conf_tx,
1766         .bss_info_changed   = ath9k_htc_bss_info_changed,
1767         .set_key            = ath9k_htc_set_key,
1768         .get_tsf            = ath9k_htc_get_tsf,
1769         .set_tsf            = ath9k_htc_set_tsf,
1770         .reset_tsf          = ath9k_htc_reset_tsf,
1771         .ampdu_action       = ath9k_htc_ampdu_action,
1772         .sw_scan_start      = ath9k_htc_sw_scan_start,
1773         .sw_scan_complete   = ath9k_htc_sw_scan_complete,
1774         .set_rts_threshold  = ath9k_htc_set_rts_threshold,
1775         .rfkill_poll        = ath9k_htc_rfkill_poll_state,
1776         .set_coverage_class = ath9k_htc_set_coverage_class,
1777         .set_bitrate_mask   = ath9k_htc_set_bitrate_mask,
1778         .get_stats          = ath9k_htc_get_stats,
1779 };