drivers/net/wireless/ath/ath10k/mac.c

   1 /*
   2  * Copyright (c) 2005-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2013 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #include "mac.h"
  19
  20 #include <net/mac80211.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include "hif.h"
  24 #include "core.h"
  25 #include "debug.h"
  26 #include "wmi.h"
  27 #include "htt.h"
  28 #include "txrx.h"
  29 #include "testmode.h"
  30
  31 /**********/
  32 /* Crypto */
  33 /**********/
  34
  35 static int ath10k_send_key(struct ath10k_vif *arvif,
  36                            struct ieee80211_key_conf *key,
  37                            enum set_key_cmd cmd,
  38                            const u8 *macaddr)
  39 {
  40         struct ath10k *ar = arvif->ar;
  41         struct wmi_vdev_install_key_arg arg = {
  42                 .vdev_id = arvif->vdev_id,
  43                 .key_idx = key->keyidx,
  44                 .key_len = key->keylen,
  45                 .key_data = key->key,
  46                 .macaddr = macaddr,
  47         };
  48
  49         lockdep_assert_held(&arvif->ar->conf_mutex);
  50
  51         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
  52                 arg.key_flags = WMI_KEY_PAIRWISE;
  53         else
  54                 arg.key_flags = WMI_KEY_GROUP;
  55
  56         switch (key->cipher) {
  57         case WLAN_CIPHER_SUITE_CCMP:
  58                 arg.key_cipher = WMI_CIPHER_AES_CCM;
  59                 if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
  60                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV_MGMT;
  61                 else
  62                         key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX;
  63                 break;
  64         case WLAN_CIPHER_SUITE_TKIP:
  65                 arg.key_cipher = WMI_CIPHER_TKIP;
  66                 arg.key_txmic_len = 8;
  67                 arg.key_rxmic_len = 8;
  68                 break;
  69         case WLAN_CIPHER_SUITE_WEP40:
  70         case WLAN_CIPHER_SUITE_WEP104:
  71                 arg.key_cipher = WMI_CIPHER_WEP;
  72                 /* AP/IBSS mode requires self-key to be groupwise
  73                  * Otherwise pairwise key must be set */
  74                 if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN))
  75                         arg.key_flags = WMI_KEY_PAIRWISE;
  76                 break;
  77         default:
  78                 ath10k_warn(ar, "cipher %d is not supported\n", key->cipher);
  79                 return -EOPNOTSUPP;
  80         }
  81
  82         if (cmd == DISABLE_KEY) {
  83                 arg.key_cipher = WMI_CIPHER_NONE;
  84                 arg.key_data = NULL;
  85         }
  86
  87         return ath10k_wmi_vdev_install_key(arvif->ar, &arg);
  88 }
  89
  90 static int ath10k_install_key(struct ath10k_vif *arvif,
  91                               struct ieee80211_key_conf *key,
  92                               enum set_key_cmd cmd,
  93                               const u8 *macaddr)
  94 {
  95         struct ath10k *ar = arvif->ar;
  96         int ret;
  97
  98         lockdep_assert_held(&ar->conf_mutex);
  99
 100         reinit_completion(&ar->install_key_done);
 101
 102         ret = ath10k_send_key(arvif, key, cmd, macaddr);
 103         if (ret)
 104                 return ret;
 105
 106         ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ);
 107         if (ret == 0)
 108                 return -ETIMEDOUT;
 109
 110         return 0;
 111 }
 112
 113 static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif,
 114                                         const u8 *addr)
 115 {
 116         struct ath10k *ar = arvif->ar;
 117         struct ath10k_peer *peer;
 118         int ret;
 119         int i;
 120
 121         lockdep_assert_held(&ar->conf_mutex);
 122
 123         spin_lock_bh(&ar->data_lock);
 124         peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
 125         spin_unlock_bh(&ar->data_lock);
 126
 127         if (!peer)
 128                 return -ENOENT;
 129
 130         for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) {
 131                 if (arvif->wep_keys[i] == NULL)
 132                         continue;
 133
 134                 ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY,
 135                                          addr);
 136                 if (ret)
 137                         return ret;
 138
 139                 spin_lock_bh(&ar->data_lock);
 140                 peer->keys[i] = arvif->wep_keys[i];
 141                 spin_unlock_bh(&ar->data_lock);
 142         }
 143
 144         return 0;
 145 }
 146
 147 static int ath10k_clear_peer_keys(struct ath10k_vif *arvif,
 148                                   const u8 *addr)
 149 {
 150         struct ath10k *ar = arvif->ar;
 151         struct ath10k_peer *peer;
 152         int first_errno = 0;
 153         int ret;
 154         int i;
 155
 156         lockdep_assert_held(&ar->conf_mutex);
 157
 158         spin_lock_bh(&ar->data_lock);
 159         peer = ath10k_peer_find(ar, arvif->vdev_id, addr);
 160         spin_unlock_bh(&ar->data_lock);
 161
 162         if (!peer)
 163                 return -ENOENT;
 164
 165         for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
 166                 if (peer->keys[i] == NULL)
 167                         continue;
 168
 169                 ret = ath10k_install_key(arvif, peer->keys[i],
 170                                          DISABLE_KEY, addr);
 171                 if (ret && first_errno == 0)
 172                         first_errno = ret;
 173
 174                 if (ret)
 175                         ath10k_warn(ar, "failed to remove peer wep key %d: %d\n",
 176                                     i, ret);
 177
 178                 spin_lock_bh(&ar->data_lock);
 179                 peer->keys[i] = NULL;
 180                 spin_unlock_bh(&ar->data_lock);
 181         }
 182
 183         return first_errno;
 184 }
 185
 186 bool ath10k_mac_is_peer_wep_key_set(struct ath10k *ar, const u8 *addr,
 187                                     u8 keyidx)
 188 {
 189         struct ath10k_peer *peer;
 190         int i;
 191
 192         lockdep_assert_held(&ar->data_lock);
 193
 194         /* We don't know which vdev this peer belongs to,
 195          * since WMI doesn't give us that information.
 196          *
 197          * FIXME: multi-bss needs to be handled.
 198          */
 199         peer = ath10k_peer_find(ar, 0, addr);
 200         if (!peer)
 201                 return false;
 202
 203         for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
 204                 if (peer->keys[i] && peer->keys[i]->keyidx == keyidx)
 205                         return true;
 206         }
 207
 208         return false;
 209 }
 210
 211 static int ath10k_clear_vdev_key(struct ath10k_vif *arvif,
 212                                  struct ieee80211_key_conf *key)
 213 {
 214         struct ath10k *ar = arvif->ar;
 215         struct ath10k_peer *peer;
 216         u8 addr[ETH_ALEN];
 217         int first_errno = 0;
 218         int ret;
 219         int i;
 220
 221         lockdep_assert_held(&ar->conf_mutex);
 222
 223         for (;;) {
 224                 /* since ath10k_install_key we can't hold data_lock all the
 225                  * time, so we try to remove the keys incrementally */
 226                 spin_lock_bh(&ar->data_lock);
 227                 i = 0;
 228                 list_for_each_entry(peer, &ar->peers, list) {
 229                         for (i = 0; i < ARRAY_SIZE(peer->keys); i++) {
 230                                 if (peer->keys[i] == key) {
 231                                         ether_addr_copy(addr, peer->addr);
 232                                         peer->keys[i] = NULL;
 233                                         break;
 234                                 }
 235                         }
 236
 237                         if (i < ARRAY_SIZE(peer->keys))
 238                                 break;
 239                 }
 240                 spin_unlock_bh(&ar->data_lock);
 241
 242                 if (i == ARRAY_SIZE(peer->keys))
 243                         break;
 244
 245                 ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr);
 246                 if (ret && first_errno == 0)
 247                         first_errno = ret;
 248
 249                 if (ret)
 250                         ath10k_warn(ar, "failed to remove key for %pM: %d\n",
 251                                     addr, ret);
 252         }
 253
 254         return first_errno;
 255 }
 256
 257 /*********************/
 258 /* General utilities */
 259 /*********************/
 260
 261 static inline enum wmi_phy_mode
 262 chan_to_phymode(const struct cfg80211_chan_def *chandef)
 263 {
 264         enum wmi_phy_mode phymode = MODE_UNKNOWN;
 265
 266         switch (chandef->chan->band) {
 267         case IEEE80211_BAND_2GHZ:
 268                 switch (chandef->width) {
 269                 case NL80211_CHAN_WIDTH_20_NOHT:
 270                         phymode = MODE_11G;
 271                         break;
 272                 case NL80211_CHAN_WIDTH_20:
 273                         phymode = MODE_11NG_HT20;
 274                         break;
 275                 case NL80211_CHAN_WIDTH_40:
 276                         phymode = MODE_11NG_HT40;
 277                         break;
 278                 case NL80211_CHAN_WIDTH_5:
 279                 case NL80211_CHAN_WIDTH_10:
 280                 case NL80211_CHAN_WIDTH_80:
 281                 case NL80211_CHAN_WIDTH_80P80:
 282                 case NL80211_CHAN_WIDTH_160:
 283                         phymode = MODE_UNKNOWN;
 284                         break;
 285                 }
 286                 break;
 287         case IEEE80211_BAND_5GHZ:
 288                 switch (chandef->width) {
 289                 case NL80211_CHAN_WIDTH_20_NOHT:
 290                         phymode = MODE_11A;
 291                         break;
 292                 case NL80211_CHAN_WIDTH_20:
 293                         phymode = MODE_11NA_HT20;
 294                         break;
 295                 case NL80211_CHAN_WIDTH_40:
 296                         phymode = MODE_11NA_HT40;
 297                         break;
 298                 case NL80211_CHAN_WIDTH_80:
 299                         phymode = MODE_11AC_VHT80;
 300                         break;
 301                 case NL80211_CHAN_WIDTH_5:
 302                 case NL80211_CHAN_WIDTH_10:
 303                 case NL80211_CHAN_WIDTH_80P80:
 304                 case NL80211_CHAN_WIDTH_160:
 305                         phymode = MODE_UNKNOWN;
 306                         break;
 307                 }
 308                 break;
 309         default:
 310                 break;
 311         }
 312
 313         WARN_ON(phymode == MODE_UNKNOWN);
 314         return phymode;
 315 }
 316
 317 static u8 ath10k_parse_mpdudensity(u8 mpdudensity)
 318 {
 319 /*
 320  * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
 321  *   0 for no restriction
 322  *   1 for 1/4 us
 323  *   2 for 1/2 us
 324  *   3 for 1 us
 325  *   4 for 2 us
 326  *   5 for 4 us
 327  *   6 for 8 us
 328  *   7 for 16 us
 329  */
 330         switch (mpdudensity) {
 331         case 0:
 332                 return 0;
 333         case 1:
 334         case 2:
 335         case 3:
 336         /* Our lower layer calculations limit our precision to
 337            1 microsecond */
 338                 return 1;
 339         case 4:
 340                 return 2;
 341         case 5:
 342                 return 4;
 343         case 6:
 344                 return 8;
 345         case 7:
 346                 return 16;
 347         default:
 348                 return 0;
 349         }
 350 }
 351
 352 static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr)
 353 {
 354         int ret;
 355
 356         lockdep_assert_held(&ar->conf_mutex);
 357
 358         if (ar->num_peers >= ar->max_num_peers)
 359                 return -ENOBUFS;
 360
 361         ret = ath10k_wmi_peer_create(ar, vdev_id, addr);
 362         if (ret) {
 363                 ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
 364                             addr, vdev_id, ret);
 365                 return ret;
 366         }
 367
 368         ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
 369         if (ret) {
 370                 ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
 371                             addr, vdev_id, ret);
 372                 return ret;
 373         }
 374
 375         ar->num_peers++;
 376
 377         return 0;
 378 }
 379
 380 static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
 381 {
 382         struct ath10k *ar = arvif->ar;
 383         u32 param;
 384         int ret;
 385
 386         param = ar->wmi.pdev_param->sta_kickout_th;
 387         ret = ath10k_wmi_pdev_set_param(ar, param,
 388                                         ATH10K_KICKOUT_THRESHOLD);
 389         if (ret) {
 390                 ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
 391                             arvif->vdev_id, ret);
 392                 return ret;
 393         }
 394
 395         param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
 396         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 397                                         ATH10K_KEEPALIVE_MIN_IDLE);
 398         if (ret) {
 399                 ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
 400                             arvif->vdev_id, ret);
 401                 return ret;
 402         }
 403
 404         param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
 405         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 406                                         ATH10K_KEEPALIVE_MAX_IDLE);
 407         if (ret) {
 408                 ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
 409                             arvif->vdev_id, ret);
 410                 return ret;
 411         }
 412
 413         param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
 414         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 415                                         ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
 416         if (ret) {
 417                 ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
 418                             arvif->vdev_id, ret);
 419                 return ret;
 420         }
 421
 422         return 0;
 423 }
 424
 425 static int ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
 426 {
 427         struct ath10k *ar = arvif->ar;
 428         u32 vdev_param;
 429
 430         vdev_param = ar->wmi.vdev_param->rts_threshold;
 431         return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
 432 }
 433
 434 static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
 435 {
 436         struct ath10k *ar = arvif->ar;
 437         u32 vdev_param;
 438
 439         if (value != 0xFFFFFFFF)
 440                 value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
 441                                 ATH10K_FRAGMT_THRESHOLD_MIN,
 442                                 ATH10K_FRAGMT_THRESHOLD_MAX);
 443
 444         vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
 445         return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
 446 }
 447
 448 static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
 449 {
 450         int ret;
 451
 452         lockdep_assert_held(&ar->conf_mutex);
 453
 454         ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
 455         if (ret)
 456                 return ret;
 457
 458         ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
 459         if (ret)
 460                 return ret;
 461
 462         ar->num_peers--;
 463
 464         return 0;
 465 }
 466
 467 static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
 468 {
 469         struct ath10k_peer *peer, *tmp;
 470
 471         lockdep_assert_held(&ar->conf_mutex);
 472
 473         spin_lock_bh(&ar->data_lock);
 474         list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
 475                 if (peer->vdev_id != vdev_id)
 476                         continue;
 477
 478                 ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
 479                             peer->addr, vdev_id);
 480
 481                 list_del(&peer->list);
 482                 kfree(peer);
 483                 ar->num_peers--;
 484         }
 485         spin_unlock_bh(&ar->data_lock);
 486 }
 487
 488 static void ath10k_peer_cleanup_all(struct ath10k *ar)
 489 {
 490         struct ath10k_peer *peer, *tmp;
 491
 492         lockdep_assert_held(&ar->conf_mutex);
 493
 494         spin_lock_bh(&ar->data_lock);
 495         list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
 496                 list_del(&peer->list);
 497                 kfree(peer);
 498         }
 499         spin_unlock_bh(&ar->data_lock);
 500
 501         ar->num_peers = 0;
 502         ar->num_stations = 0;
 503 }
 504
 505 /************************/
 506 /* Interface management */
 507 /************************/
 508
 509 void ath10k_mac_vif_beacon_free(struct ath10k_vif *arvif)
 510 {
 511         struct ath10k *ar = arvif->ar;
 512
 513         lockdep_assert_held(&ar->data_lock);
 514
 515         if (!arvif->beacon)
 516                 return;
 517
 518         if (!arvif->beacon_buf)
 519                 dma_unmap_single(ar->dev, ATH10K_SKB_CB(arvif->beacon)->paddr,
 520                                  arvif->beacon->len, DMA_TO_DEVICE);
 521
 522         dev_kfree_skb_any(arvif->beacon);
 523
 524         arvif->beacon = NULL;
 525         arvif->beacon_sent = false;
 526 }
 527
 528 static void ath10k_mac_vif_beacon_cleanup(struct ath10k_vif *arvif)
 529 {
 530         struct ath10k *ar = arvif->ar;
 531
 532         lockdep_assert_held(&ar->data_lock);
 533
 534         ath10k_mac_vif_beacon_free(arvif);
 535
 536         if (arvif->beacon_buf) {
 537                 dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
 538                                   arvif->beacon_buf, arvif->beacon_paddr);
 539                 arvif->beacon_buf = NULL;
 540         }
 541 }
 542
 543 static inline int ath10k_vdev_setup_sync(struct ath10k *ar)
 544 {
 545         int ret;
 546
 547         lockdep_assert_held(&ar->conf_mutex);
 548
 549         if (test_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags))
 550                 return -ESHUTDOWN;
 551
 552         ret = wait_for_completion_timeout(&ar->vdev_setup_done,
 553                                           ATH10K_VDEV_SETUP_TIMEOUT_HZ);
 554         if (ret == 0)
 555                 return -ETIMEDOUT;
 556
 557         return 0;
 558 }
 559
 560 static int ath10k_monitor_vdev_start(struct ath10k *ar, int vdev_id)
 561 {
 562         struct cfg80211_chan_def *chandef = &ar->chandef;
 563         struct ieee80211_channel *channel = chandef->chan;
 564         struct wmi_vdev_start_request_arg arg = {};
 565         int ret = 0;
 566
 567         lockdep_assert_held(&ar->conf_mutex);
 568
 569         arg.vdev_id = vdev_id;
 570         arg.channel.freq = channel->center_freq;
 571         arg.channel.band_center_freq1 = chandef->center_freq1;
 572
 573         /* TODO setup this dynamically, what in case we
 574            don't have any vifs? */
 575         arg.channel.mode = chan_to_phymode(chandef);
 576         arg.channel.chan_radar =
 577                         !!(channel->flags & IEEE80211_CHAN_RADAR);
 578
 579         arg.channel.min_power = 0;
 580         arg.channel.max_power = channel->max_power * 2;
 581         arg.channel.max_reg_power = channel->max_reg_power * 2;
 582         arg.channel.max_antenna_gain = channel->max_antenna_gain * 2;
 583
 584         reinit_completion(&ar->vdev_setup_done);
 585
 586         ret = ath10k_wmi_vdev_start(ar, &arg);
 587         if (ret) {
 588                 ath10k_warn(ar, "failed to request monitor vdev %i start: %d\n",
 589                             vdev_id, ret);
 590                 return ret;
 591         }
 592
 593         ret = ath10k_vdev_setup_sync(ar);
 594         if (ret) {
 595                 ath10k_warn(ar, "failed to synchronize setup for monitor vdev %i: %d\n",
 596                             vdev_id, ret);
 597                 return ret;
 598         }
 599
 600         ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr);
 601         if (ret) {
 602                 ath10k_warn(ar, "failed to put up monitor vdev %i: %d\n",
 603                             vdev_id, ret);
 604                 goto vdev_stop;
 605         }
 606
 607         ar->monitor_vdev_id = vdev_id;
 608
 609         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i started\n",
 610                    ar->monitor_vdev_id);
 611         return 0;
 612
 613 vdev_stop:
 614         ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
 615         if (ret)
 616                 ath10k_warn(ar, "failed to stop monitor vdev %i after start failure: %d\n",
 617                             ar->monitor_vdev_id, ret);
 618
 619         return ret;
 620 }
 621
 622 static int ath10k_monitor_vdev_stop(struct ath10k *ar)
 623 {
 624         int ret = 0;
 625
 626         lockdep_assert_held(&ar->conf_mutex);
 627
 628         ret = ath10k_wmi_vdev_down(ar, ar->monitor_vdev_id);
 629         if (ret)
 630                 ath10k_warn(ar, "failed to put down monitor vdev %i: %d\n",
 631                             ar->monitor_vdev_id, ret);
 632
 633         reinit_completion(&ar->vdev_setup_done);
 634
 635         ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id);
 636         if (ret)
 637                 ath10k_warn(ar, "failed to to request monitor vdev %i stop: %d\n",
 638                             ar->monitor_vdev_id, ret);
 639
 640         ret = ath10k_vdev_setup_sync(ar);
 641         if (ret)
 642                 ath10k_warn(ar, "failed to synchronise monitor vdev %i: %d\n",
 643                             ar->monitor_vdev_id, ret);
 644
 645         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %i stopped\n",
 646                    ar->monitor_vdev_id);
 647         return ret;
 648 }
 649
 650 static int ath10k_monitor_vdev_create(struct ath10k *ar)
 651 {
 652         int bit, ret = 0;
 653
 654         lockdep_assert_held(&ar->conf_mutex);
 655
 656         if (ar->free_vdev_map == 0) {
 657                 ath10k_warn(ar, "failed to find free vdev id for monitor vdev\n");
 658                 return -ENOMEM;
 659         }
 660
 661         bit = __ffs64(ar->free_vdev_map);
 662
 663         ar->monitor_vdev_id = bit;
 664
 665         ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id,
 666                                      WMI_VDEV_TYPE_MONITOR,
 667                                      0, ar->mac_addr);
 668         if (ret) {
 669                 ath10k_warn(ar, "failed to request monitor vdev %i creation: %d\n",
 670                             ar->monitor_vdev_id, ret);
 671                 return ret;
 672         }
 673
 674         ar->free_vdev_map &= ~(1LL << ar->monitor_vdev_id);
 675         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d created\n",
 676                    ar->monitor_vdev_id);
 677
 678         return 0;
 679 }
 680
 681 static int ath10k_monitor_vdev_delete(struct ath10k *ar)
 682 {
 683         int ret = 0;
 684
 685         lockdep_assert_held(&ar->conf_mutex);
 686
 687         ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id);
 688         if (ret) {
 689                 ath10k_warn(ar, "failed to request wmi monitor vdev %i removal: %d\n",
 690                             ar->monitor_vdev_id, ret);
 691                 return ret;
 692         }
 693
 694         ar->free_vdev_map |= 1LL << ar->monitor_vdev_id;
 695
 696         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor vdev %d deleted\n",
 697                    ar->monitor_vdev_id);
 698         return ret;
 699 }
 700
 701 static int ath10k_monitor_start(struct ath10k *ar)
 702 {
 703         int ret;
 704
 705         lockdep_assert_held(&ar->conf_mutex);
 706
 707         ret = ath10k_monitor_vdev_create(ar);
 708         if (ret) {
 709                 ath10k_warn(ar, "failed to create monitor vdev: %d\n", ret);
 710                 return ret;
 711         }
 712
 713         ret = ath10k_monitor_vdev_start(ar, ar->monitor_vdev_id);
 714         if (ret) {
 715                 ath10k_warn(ar, "failed to start monitor vdev: %d\n", ret);
 716                 ath10k_monitor_vdev_delete(ar);
 717                 return ret;
 718         }
 719
 720         ar->monitor_started = true;
 721         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor started\n");
 722
 723         return 0;
 724 }
 725
 726 static int ath10k_monitor_stop(struct ath10k *ar)
 727 {
 728         int ret;
 729
 730         lockdep_assert_held(&ar->conf_mutex);
 731
 732         ret = ath10k_monitor_vdev_stop(ar);
 733         if (ret) {
 734                 ath10k_warn(ar, "failed to stop monitor vdev: %d\n", ret);
 735                 return ret;
 736         }
 737
 738         ret = ath10k_monitor_vdev_delete(ar);
 739         if (ret) {
 740                 ath10k_warn(ar, "failed to delete monitor vdev: %d\n", ret);
 741                 return ret;
 742         }
 743
 744         ar->monitor_started = false;
 745         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac monitor stopped\n");
 746
 747         return 0;
 748 }
 749
 750 static int ath10k_monitor_recalc(struct ath10k *ar)
 751 {
 752         bool should_start;
 753
 754         lockdep_assert_held(&ar->conf_mutex);
 755
 756         should_start = ar->monitor ||
 757                        ar->filter_flags & FIF_PROMISC_IN_BSS ||
 758                        test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
 759
 760         ath10k_dbg(ar, ATH10K_DBG_MAC,
 761                    "mac monitor recalc started? %d should? %d\n",
 762                    ar->monitor_started, should_start);
 763
 764         if (should_start == ar->monitor_started)
 765                 return 0;
 766
 767         if (should_start)
 768                 return ath10k_monitor_start(ar);
 769
 770         return ath10k_monitor_stop(ar);
 771 }
 772
 773 static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
 774 {
 775         struct ath10k *ar = arvif->ar;
 776         u32 vdev_param, rts_cts = 0;
 777
 778         lockdep_assert_held(&ar->conf_mutex);
 779
 780         vdev_param = ar->wmi.vdev_param->enable_rtscts;
 781
 782         if (arvif->use_cts_prot || arvif->num_legacy_stations > 0)
 783                 rts_cts |= SM(WMI_RTSCTS_ENABLED, WMI_RTSCTS_SET);
 784
 785         if (arvif->num_legacy_stations > 0)
 786                 rts_cts |= SM(WMI_RTSCTS_ACROSS_SW_RETRIES,
 787                               WMI_RTSCTS_PROFILE);
 788
 789         return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
 790                                          rts_cts);
 791 }
 792
 793 static int ath10k_start_cac(struct ath10k *ar)
 794 {
 795         int ret;
 796
 797         lockdep_assert_held(&ar->conf_mutex);
 798
 799         set_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
 800
 801         ret = ath10k_monitor_recalc(ar);
 802         if (ret) {
 803                 ath10k_warn(ar, "failed to start monitor (cac): %d\n", ret);
 804                 clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
 805                 return ret;
 806         }
 807
 808         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac start monitor vdev %d\n",
 809                    ar->monitor_vdev_id);
 810
 811         return 0;
 812 }
 813
 814 static int ath10k_stop_cac(struct ath10k *ar)
 815 {
 816         lockdep_assert_held(&ar->conf_mutex);
 817
 818         /* CAC is not running - do nothing */
 819         if (!test_bit(ATH10K_CAC_RUNNING, &ar->dev_flags))
 820                 return 0;
 821
 822         clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
 823         ath10k_monitor_stop(ar);
 824
 825         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac cac finished\n");
 826
 827         return 0;
 828 }
 829
 830 static void ath10k_recalc_radar_detection(struct ath10k *ar)
 831 {
 832         int ret;
 833
 834         lockdep_assert_held(&ar->conf_mutex);
 835
 836         ath10k_stop_cac(ar);
 837
 838         if (!ar->radar_enabled)
 839                 return;
 840
 841         if (ar->num_started_vdevs > 0)
 842                 return;
 843
 844         ret = ath10k_start_cac(ar);
 845         if (ret) {
 846                 /*
 847                  * Not possible to start CAC on current channel so starting
 848                  * radiation is not allowed, make this channel DFS_UNAVAILABLE
 849                  * by indicating that radar was detected.
 850                  */
 851                 ath10k_warn(ar, "failed to start CAC: %d\n", ret);
 852                 ieee80211_radar_detected(ar->hw);
 853         }
 854 }
 855
 856 static int ath10k_vdev_start_restart(struct ath10k_vif *arvif, bool restart)
 857 {
 858         struct ath10k *ar = arvif->ar;
 859         struct cfg80211_chan_def *chandef = &ar->chandef;
 860         struct wmi_vdev_start_request_arg arg = {};
 861         int ret = 0;
 862
 863         lockdep_assert_held(&ar->conf_mutex);
 864
 865         reinit_completion(&ar->vdev_setup_done);
 866
 867         arg.vdev_id = arvif->vdev_id;
 868         arg.dtim_period = arvif->dtim_period;
 869         arg.bcn_intval = arvif->beacon_interval;
 870
 871         arg.channel.freq = chandef->chan->center_freq;
 872         arg.channel.band_center_freq1 = chandef->center_freq1;
 873         arg.channel.mode = chan_to_phymode(chandef);
 874
 875         arg.channel.min_power = 0;
 876         arg.channel.max_power = chandef->chan->max_power * 2;
 877         arg.channel.max_reg_power = chandef->chan->max_reg_power * 2;
 878         arg.channel.max_antenna_gain = chandef->chan->max_antenna_gain * 2;
 879
 880         if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
 881                 arg.ssid = arvif->u.ap.ssid;
 882                 arg.ssid_len = arvif->u.ap.ssid_len;
 883                 arg.hidden_ssid = arvif->u.ap.hidden_ssid;
 884
 885                 /* For now allow DFS for AP mode */
 886                 arg.channel.chan_radar =
 887                         !!(chandef->chan->flags & IEEE80211_CHAN_RADAR);
 888         } else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
 889                 arg.ssid = arvif->vif->bss_conf.ssid;
 890                 arg.ssid_len = arvif->vif->bss_conf.ssid_len;
 891         }
 892
 893         ath10k_dbg(ar, ATH10K_DBG_MAC,
 894                    "mac vdev %d start center_freq %d phymode %s\n",
 895                    arg.vdev_id, arg.channel.freq,
 896                    ath10k_wmi_phymode_str(arg.channel.mode));
 897
 898         if (restart)
 899                 ret = ath10k_wmi_vdev_restart(ar, &arg);
 900         else
 901                 ret = ath10k_wmi_vdev_start(ar, &arg);
 902
 903         if (ret) {
 904                 ath10k_warn(ar, "failed to start WMI vdev %i: %d\n",
 905                             arg.vdev_id, ret);
 906                 return ret;
 907         }
 908
 909         ret = ath10k_vdev_setup_sync(ar);
 910         if (ret) {
 911                 ath10k_warn(ar, "failed to synchronise setup for vdev %i: %d\n",
 912                             arg.vdev_id, ret);
 913                 return ret;
 914         }
 915
 916         ar->num_started_vdevs++;
 917         ath10k_recalc_radar_detection(ar);
 918
 919         return ret;
 920 }
 921
 922 static int ath10k_vdev_start(struct ath10k_vif *arvif)
 923 {
 924         return ath10k_vdev_start_restart(arvif, false);
 925 }
 926
 927 static int ath10k_vdev_restart(struct ath10k_vif *arvif)
 928 {
 929         return ath10k_vdev_start_restart(arvif, true);
 930 }
 931
 932 static int ath10k_vdev_stop(struct ath10k_vif *arvif)
 933 {
 934         struct ath10k *ar = arvif->ar;
 935         int ret;
 936
 937         lockdep_assert_held(&ar->conf_mutex);
 938
 939         reinit_completion(&ar->vdev_setup_done);
 940
 941         ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id);
 942         if (ret) {
 943                 ath10k_warn(ar, "failed to stop WMI vdev %i: %d\n",
 944                             arvif->vdev_id, ret);
 945                 return ret;
 946         }
 947
 948         ret = ath10k_vdev_setup_sync(ar);
 949         if (ret) {
 950                 ath10k_warn(ar, "failed to syncronise setup for vdev %i: %d\n",
 951                             arvif->vdev_id, ret);
 952                 return ret;
 953         }
 954
 955         WARN_ON(ar->num_started_vdevs == 0);
 956
 957         if (ar->num_started_vdevs != 0) {
 958                 ar->num_started_vdevs--;
 959                 ath10k_recalc_radar_detection(ar);
 960         }
 961
 962         return ret;
 963 }
 964
 965 static void ath10k_control_beaconing(struct ath10k_vif *arvif,
 966                                      struct ieee80211_bss_conf *info)
 967 {
 968         struct ath10k *ar = arvif->ar;
 969         int ret = 0;
 970
 971         lockdep_assert_held(&arvif->ar->conf_mutex);
 972
 973         if (!info->enable_beacon) {
 974                 ath10k_vdev_stop(arvif);
 975
 976                 arvif->is_started = false;
 977                 arvif->is_up = false;
 978
 979                 spin_lock_bh(&arvif->ar->data_lock);
 980                 ath10k_mac_vif_beacon_free(arvif);
 981                 spin_unlock_bh(&arvif->ar->data_lock);
 982
 983                 return;
 984         }
 985
 986         arvif->tx_seq_no = 0x1000;
 987
 988         ret = ath10k_vdev_start(arvif);
 989         if (ret)
 990                 return;
 991
 992         arvif->aid = 0;
 993         ether_addr_copy(arvif->bssid, info->bssid);
 994
 995         ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
 996                                  arvif->bssid);
 997         if (ret) {
 998                 ath10k_warn(ar, "failed to bring up vdev %d: %i\n",
 999                             arvif->vdev_id, ret);
1000                 ath10k_vdev_stop(arvif);
1001                 return;
1002         }
1003
1004         arvif->is_started = true;
1005         arvif->is_up = true;
1006
1007         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id);
1008 }
1009
1010 static void ath10k_control_ibss(struct ath10k_vif *arvif,
1011                                 struct ieee80211_bss_conf *info,
1012                                 const u8 self_peer[ETH_ALEN])
1013 {
1014         struct ath10k *ar = arvif->ar;
1015         u32 vdev_param;
1016         int ret = 0;
1017
1018         lockdep_assert_held(&arvif->ar->conf_mutex);
1019
1020         if (!info->ibss_joined) {
1021                 ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer);
1022                 if (ret)
1023                         ath10k_warn(ar, "failed to delete IBSS self peer %pM for vdev %d: %d\n",
1024                                     self_peer, arvif->vdev_id, ret);
1025
1026                 if (is_zero_ether_addr(arvif->bssid))
1027                         return;
1028
1029                 memset(arvif->bssid, 0, ETH_ALEN);
1030
1031                 return;
1032         }
1033
1034         ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer);
1035         if (ret) {
1036                 ath10k_warn(ar, "failed to create IBSS self peer %pM for vdev %d: %d\n",
1037                             self_peer, arvif->vdev_id, ret);
1038                 return;
1039         }
1040
1041         vdev_param = arvif->ar->wmi.vdev_param->atim_window;
1042         ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, vdev_param,
1043                                         ATH10K_DEFAULT_ATIM);
1044         if (ret)
1045                 ath10k_warn(ar, "failed to set IBSS ATIM for vdev %d: %d\n",
1046                             arvif->vdev_id, ret);
1047 }
1048
1049 /*
1050  * Review this when mac80211 gains per-interface powersave support.
1051  */
1052 static int ath10k_mac_vif_setup_ps(struct ath10k_vif *arvif)
1053 {
1054         struct ath10k *ar = arvif->ar;
1055         struct ieee80211_conf *conf = &ar->hw->conf;
1056         enum wmi_sta_powersave_param param;
1057         enum wmi_sta_ps_mode psmode;
1058         int ret;
1059
1060         lockdep_assert_held(&arvif->ar->conf_mutex);
1061
1062         if (arvif->vif->type != NL80211_IFTYPE_STATION)
1063                 return 0;
1064
1065         if (conf->flags & IEEE80211_CONF_PS) {
1066                 psmode = WMI_STA_PS_MODE_ENABLED;
1067                 param = WMI_STA_PS_PARAM_INACTIVITY_TIME;
1068
1069                 ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, param,
1070                                                   conf->dynamic_ps_timeout);
1071                 if (ret) {
1072                         ath10k_warn(ar, "failed to set inactivity time for vdev %d: %i\n",
1073                                     arvif->vdev_id, ret);
1074                         return ret;
1075                 }
1076         } else {
1077                 psmode = WMI_STA_PS_MODE_DISABLED;
1078         }
1079
1080         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d psmode %s\n",
1081                    arvif->vdev_id, psmode ? "enable" : "disable");
1082
1083         ret = ath10k_wmi_set_psmode(ar, arvif->vdev_id, psmode);
1084         if (ret) {
1085                 ath10k_warn(ar, "failed to set PS Mode %d for vdev %d: %d\n",
1086                             psmode, arvif->vdev_id, ret);
1087                 return ret;
1088         }
1089
1090         return 0;
1091 }
1092
1093 /**********************/
1094 /* Station management */
1095 /**********************/
1096
1097 static u32 ath10k_peer_assoc_h_listen_intval(struct ath10k *ar,
1098                                              struct ieee80211_vif *vif)
1099 {
1100         /* Some firmware revisions have unstable STA powersave when listen
1101          * interval is set too high (e.g. 5). The symptoms are firmware doesn't
1102          * generate NullFunc frames properly even if buffered frames have been
1103          * indicated in Beacon TIM. Firmware would seldom wake up to pull
1104          * buffered frames. Often pinging the device from AP would simply fail.
1105          *
1106          * As a workaround set it to 1.
1107          */
1108         if (vif->type == NL80211_IFTYPE_STATION)
1109                 return 1;
1110
1111         return ar->hw->conf.listen_interval;
1112 }
1113
1114 static void ath10k_peer_assoc_h_basic(struct ath10k *ar,
1115                                       struct ieee80211_vif *vif,
1116                                       struct ieee80211_sta *sta,
1117                                       struct wmi_peer_assoc_complete_arg *arg)
1118 {
1119         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1120
1121         lockdep_assert_held(&ar->conf_mutex);
1122
1123         ether_addr_copy(arg->addr, sta->addr);
1124         arg->vdev_id = arvif->vdev_id;
1125         arg->peer_aid = sta->aid;
1126         arg->peer_flags |= WMI_PEER_AUTH;
1127         arg->peer_listen_intval = ath10k_peer_assoc_h_listen_intval(ar, vif);
1128         arg->peer_num_spatial_streams = 1;
1129         arg->peer_caps = vif->bss_conf.assoc_capability;
1130 }
1131
1132 static void ath10k_peer_assoc_h_crypto(struct ath10k *ar,
1133                                        struct ieee80211_vif *vif,
1134                                        struct wmi_peer_assoc_complete_arg *arg)
1135 {
1136         struct ieee80211_bss_conf *info = &vif->bss_conf;
1137         struct cfg80211_bss *bss;
1138         const u8 *rsnie = NULL;
1139         const u8 *wpaie = NULL;
1140
1141         lockdep_assert_held(&ar->conf_mutex);
1142
1143         bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan,
1144                                info->bssid, NULL, 0, 0, 0);
1145         if (bss) {
1146                 const struct cfg80211_bss_ies *ies;
1147
1148                 rcu_read_lock();
1149                 rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN);
1150
1151                 ies = rcu_dereference(bss->ies);
1152
1153                 wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
1154                                                 WLAN_OUI_TYPE_MICROSOFT_WPA,
1155                                                 ies->data,
1156                                                 ies->len);
1157                 rcu_read_unlock();
1158                 cfg80211_put_bss(ar->hw->wiphy, bss);
1159         }
1160
1161         /* FIXME: base on RSN IE/WPA IE is a correct idea? */
1162         if (rsnie || wpaie) {
1163                 ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__);
1164                 arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY;
1165         }
1166
1167         if (wpaie) {
1168                 ath10k_dbg(ar, ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__);
1169                 arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY;
1170         }
1171 }
1172
1173 static void ath10k_peer_assoc_h_rates(struct ath10k *ar,
1174                                       struct ieee80211_sta *sta,
1175                                       struct wmi_peer_assoc_complete_arg *arg)
1176 {
1177         struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates;
1178         const struct ieee80211_supported_band *sband;
1179         const struct ieee80211_rate *rates;
1180         u32 ratemask;
1181         int i;
1182
1183         lockdep_assert_held(&ar->conf_mutex);
1184
1185         sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band];
1186         ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band];
1187         rates = sband->bitrates;
1188
1189         rateset->num_rates = 0;
1190
1191         for (i = 0; i < 32; i++, ratemask >>= 1, rates++) {
1192                 if (!(ratemask & 1))
1193                         continue;
1194
1195                 rateset->rates[rateset->num_rates] = rates->hw_value;
1196                 rateset->num_rates++;
1197         }
1198 }
1199
1200 static void ath10k_peer_assoc_h_ht(struct ath10k *ar,
1201                                    struct ieee80211_sta *sta,
1202                                    struct wmi_peer_assoc_complete_arg *arg)
1203 {
1204         const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
1205         int i, n;
1206         u32 stbc;
1207
1208         lockdep_assert_held(&ar->conf_mutex);
1209
1210         if (!ht_cap->ht_supported)
1211                 return;
1212
1213         arg->peer_flags |= WMI_PEER_HT;
1214         arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR +
1215                                     ht_cap->ampdu_factor)) - 1;
1216
1217         arg->peer_mpdu_density =
1218                 ath10k_parse_mpdudensity(ht_cap->ampdu_density);
1219
1220         arg->peer_ht_caps = ht_cap->cap;
1221         arg->peer_rate_caps |= WMI_RC_HT_FLAG;
1222
1223         if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING)
1224                 arg->peer_flags |= WMI_PEER_LDPC;
1225
1226         if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) {
1227                 arg->peer_flags |= WMI_PEER_40MHZ;
1228                 arg->peer_rate_caps |= WMI_RC_CW40_FLAG;
1229         }
1230
1231         if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
1232                 arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
1233
1234         if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
1235                 arg->peer_rate_caps |= WMI_RC_SGI_FLAG;
1236
1237         if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) {
1238                 arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG;
1239                 arg->peer_flags |= WMI_PEER_STBC;
1240         }
1241
1242         if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) {
1243                 stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC;
1244                 stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT;
1245                 stbc = stbc << WMI_RC_RX_STBC_FLAG_S;
1246                 arg->peer_rate_caps |= stbc;
1247                 arg->peer_flags |= WMI_PEER_STBC;
1248         }
1249
1250         if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2])
1251                 arg->peer_rate_caps |= WMI_RC_TS_FLAG;
1252         else if (ht_cap->mcs.rx_mask[1])
1253                 arg->peer_rate_caps |= WMI_RC_DS_FLAG;
1254
1255         for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++)
1256                 if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8))
1257                         arg->peer_ht_rates.rates[n++] = i;
1258
1259         /*
1260          * This is a workaround for HT-enabled STAs which break the spec
1261          * and have no HT capabilities RX mask (no HT RX MCS map).
1262          *
1263          * As per spec, in section 20.3.5 Modulation and coding scheme (MCS),
1264          * MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs.
1265          *
1266          * Firmware asserts if such situation occurs.
1267          */
1268         if (n == 0) {
1269                 arg->peer_ht_rates.num_rates = 8;
1270                 for (i = 0; i < arg->peer_ht_rates.num_rates; i++)
1271                         arg->peer_ht_rates.rates[i] = i;
1272         } else {
1273                 arg->peer_ht_rates.num_rates = n;
1274                 arg->peer_num_spatial_streams = sta->rx_nss;
1275         }
1276
1277         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n",
1278                    arg->addr,
1279                    arg->peer_ht_rates.num_rates,
1280                    arg->peer_num_spatial_streams);
1281 }
1282
1283 static int ath10k_peer_assoc_qos_ap(struct ath10k *ar,
1284                                     struct ath10k_vif *arvif,
1285                                     struct ieee80211_sta *sta)
1286 {
1287         u32 uapsd = 0;
1288         u32 max_sp = 0;
1289         int ret = 0;
1290
1291         lockdep_assert_held(&ar->conf_mutex);
1292
1293         if (sta->wme && sta->uapsd_queues) {
1294                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n",
1295                            sta->uapsd_queues, sta->max_sp);
1296
1297                 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
1298                         uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN |
1299                                  WMI_AP_PS_UAPSD_AC3_TRIGGER_EN;
1300                 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
1301                         uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN |
1302                                  WMI_AP_PS_UAPSD_AC2_TRIGGER_EN;
1303                 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
1304                         uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN |
1305                                  WMI_AP_PS_UAPSD_AC1_TRIGGER_EN;
1306                 if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
1307                         uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN |
1308                                  WMI_AP_PS_UAPSD_AC0_TRIGGER_EN;
1309
1310                 if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP)
1311                         max_sp = sta->max_sp;
1312
1313                 ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
1314                                                  sta->addr,
1315                                                  WMI_AP_PS_PEER_PARAM_UAPSD,
1316                                                  uapsd);
1317                 if (ret) {
1318                         ath10k_warn(ar, "failed to set ap ps peer param uapsd for vdev %i: %d\n",
1319                                     arvif->vdev_id, ret);
1320                         return ret;
1321                 }
1322
1323                 ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id,
1324                                                  sta->addr,
1325                                                  WMI_AP_PS_PEER_PARAM_MAX_SP,
1326                                                  max_sp);
1327                 if (ret) {
1328                         ath10k_warn(ar, "failed to set ap ps peer param max sp for vdev %i: %d\n",
1329                                     arvif->vdev_id, ret);
1330                         return ret;
1331                 }
1332
1333                 /* TODO setup this based on STA listen interval and
1334                    beacon interval. Currently we don't know
1335                    sta->listen_interval - mac80211 patch required.
1336                    Currently use 10 seconds */
1337                 ret = ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, sta->addr,
1338                                                  WMI_AP_PS_PEER_PARAM_AGEOUT_TIME,
1339                                                  10);
1340                 if (ret) {
1341                         ath10k_warn(ar, "failed to set ap ps peer param ageout time for vdev %i: %d\n",
1342                                     arvif->vdev_id, ret);
1343                         return ret;
1344                 }
1345         }
1346
1347         return 0;
1348 }
1349
1350 static void ath10k_peer_assoc_h_vht(struct ath10k *ar,
1351                                     struct ieee80211_sta *sta,
1352                                     struct wmi_peer_assoc_complete_arg *arg)
1353 {
1354         const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
1355         u8 ampdu_factor;
1356
1357         if (!vht_cap->vht_supported)
1358                 return;
1359
1360         arg->peer_flags |= WMI_PEER_VHT;
1361         arg->peer_vht_caps = vht_cap->cap;
1362
1363         ampdu_factor = (vht_cap->cap &
1364                         IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >>
1365                        IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
1366
1367         /* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to
1368          * zero in VHT IE. Using it would result in degraded throughput.
1369          * arg->peer_max_mpdu at this point contains HT max_mpdu so keep
1370          * it if VHT max_mpdu is smaller. */
1371         arg->peer_max_mpdu = max(arg->peer_max_mpdu,
1372                                  (1U << (IEEE80211_HT_MAX_AMPDU_FACTOR +
1373                                         ampdu_factor)) - 1);
1374
1375         if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
1376                 arg->peer_flags |= WMI_PEER_80MHZ;
1377
1378         arg->peer_vht_rates.rx_max_rate =
1379                 __le16_to_cpu(vht_cap->vht_mcs.rx_highest);
1380         arg->peer_vht_rates.rx_mcs_set =
1381                 __le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map);
1382         arg->peer_vht_rates.tx_max_rate =
1383                 __le16_to_cpu(vht_cap->vht_mcs.tx_highest);
1384         arg->peer_vht_rates.tx_mcs_set =
1385                 __le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map);
1386
1387         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n",
1388                    sta->addr, arg->peer_max_mpdu, arg->peer_flags);
1389 }
1390
1391 static void ath10k_peer_assoc_h_qos(struct ath10k *ar,
1392                                     struct ieee80211_vif *vif,
1393                                     struct ieee80211_sta *sta,
1394                                     struct wmi_peer_assoc_complete_arg *arg)
1395 {
1396         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1397
1398         switch (arvif->vdev_type) {
1399         case WMI_VDEV_TYPE_AP:
1400                 if (sta->wme)
1401                         arg->peer_flags |= WMI_PEER_QOS;
1402
1403                 if (sta->wme && sta->uapsd_queues) {
1404                         arg->peer_flags |= WMI_PEER_APSD;
1405                         arg->peer_rate_caps |= WMI_RC_UAPSD_FLAG;
1406                 }
1407                 break;
1408         case WMI_VDEV_TYPE_STA:
1409                 if (vif->bss_conf.qos)
1410                         arg->peer_flags |= WMI_PEER_QOS;
1411                 break;
1412         default:
1413                 break;
1414         }
1415 }
1416
1417 static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
1418                                         struct ieee80211_vif *vif,
1419                                         struct ieee80211_sta *sta,
1420                                         struct wmi_peer_assoc_complete_arg *arg)
1421 {
1422         enum wmi_phy_mode phymode = MODE_UNKNOWN;
1423
1424         switch (ar->hw->conf.chandef.chan->band) {
1425         case IEEE80211_BAND_2GHZ:
1426                 if (sta->ht_cap.ht_supported) {
1427                         if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
1428                                 phymode = MODE_11NG_HT40;
1429                         else
1430                                 phymode = MODE_11NG_HT20;
1431                 } else {
1432                         phymode = MODE_11G;
1433                 }
1434
1435                 break;
1436         case IEEE80211_BAND_5GHZ:
1437                 /*
1438                  * Check VHT first.
1439                  */
1440                 if (sta->vht_cap.vht_supported) {
1441                         if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
1442                                 phymode = MODE_11AC_VHT80;
1443                         else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
1444                                 phymode = MODE_11AC_VHT40;
1445                         else if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
1446                                 phymode = MODE_11AC_VHT20;
1447                 } else if (sta->ht_cap.ht_supported) {
1448                         if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
1449                                 phymode = MODE_11NA_HT40;
1450                         else
1451                                 phymode = MODE_11NA_HT20;
1452                 } else {
1453                         phymode = MODE_11A;
1454                 }
1455
1456                 break;
1457         default:
1458                 break;
1459         }
1460
1461         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac peer %pM phymode %s\n",
1462                    sta->addr, ath10k_wmi_phymode_str(phymode));
1463
1464         arg->peer_phymode = phymode;
1465         WARN_ON(phymode == MODE_UNKNOWN);
1466 }
1467
1468 static int ath10k_peer_assoc_prepare(struct ath10k *ar,
1469                                      struct ieee80211_vif *vif,
1470                                      struct ieee80211_sta *sta,
1471                                      struct wmi_peer_assoc_complete_arg *arg)
1472 {
1473         lockdep_assert_held(&ar->conf_mutex);
1474
1475         memset(arg, 0, sizeof(*arg));
1476
1477         ath10k_peer_assoc_h_basic(ar, vif, sta, arg);
1478         ath10k_peer_assoc_h_crypto(ar, vif, arg);
1479         ath10k_peer_assoc_h_rates(ar, sta, arg);
1480         ath10k_peer_assoc_h_ht(ar, sta, arg);
1481         ath10k_peer_assoc_h_vht(ar, sta, arg);
1482         ath10k_peer_assoc_h_qos(ar, vif, sta, arg);
1483         ath10k_peer_assoc_h_phymode(ar, vif, sta, arg);
1484
1485         return 0;
1486 }
1487
1488 static const u32 ath10k_smps_map[] = {
1489         [WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC,
1490         [WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC,
1491         [WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE,
1492         [WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE,
1493 };
1494
1495 static int ath10k_setup_peer_smps(struct ath10k *ar, struct ath10k_vif *arvif,
1496                                   const u8 *addr,
1497                                   const struct ieee80211_sta_ht_cap *ht_cap)
1498 {
1499         int smps;
1500
1501         if (!ht_cap->ht_supported)
1502                 return 0;
1503
1504         smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS;
1505         smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT;
1506
1507         if (smps >= ARRAY_SIZE(ath10k_smps_map))
1508                 return -EINVAL;
1509
1510         return ath10k_wmi_peer_set_param(ar, arvif->vdev_id, addr,
1511                                          WMI_PEER_SMPS_STATE,
1512                                          ath10k_smps_map[smps]);
1513 }
1514
1515 /* can be called only in mac80211 callbacks due to `key_count` usage */
1516 static void ath10k_bss_assoc(struct ieee80211_hw *hw,
1517                              struct ieee80211_vif *vif,
1518                              struct ieee80211_bss_conf *bss_conf)
1519 {
1520         struct ath10k *ar = hw->priv;
1521         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1522         struct ieee80211_sta_ht_cap ht_cap;
1523         struct wmi_peer_assoc_complete_arg peer_arg;
1524         struct ieee80211_sta *ap_sta;
1525         int ret;
1526
1527         lockdep_assert_held(&ar->conf_mutex);
1528
1529         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i assoc bssid %pM aid %d\n",
1530                    arvif->vdev_id, arvif->bssid, arvif->aid);
1531
1532         rcu_read_lock();
1533
1534         ap_sta = ieee80211_find_sta(vif, bss_conf->bssid);
1535         if (!ap_sta) {
1536                 ath10k_warn(ar, "failed to find station entry for bss %pM vdev %i\n",
1537                             bss_conf->bssid, arvif->vdev_id);
1538                 rcu_read_unlock();
1539                 return;
1540         }
1541
1542         /* ap_sta must be accessed only within rcu section which must be left
1543          * before calling ath10k_setup_peer_smps() which might sleep. */
1544         ht_cap = ap_sta->ht_cap;
1545
1546         ret = ath10k_peer_assoc_prepare(ar, vif, ap_sta, &peer_arg);
1547         if (ret) {
1548                 ath10k_warn(ar, "failed to prepare peer assoc for %pM vdev %i: %d\n",
1549                             bss_conf->bssid, arvif->vdev_id, ret);
1550                 rcu_read_unlock();
1551                 return;
1552         }
1553
1554         rcu_read_unlock();
1555
1556         ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1557         if (ret) {
1558                 ath10k_warn(ar, "failed to run peer assoc for %pM vdev %i: %d\n",
1559                             bss_conf->bssid, arvif->vdev_id, ret);
1560                 return;
1561         }
1562
1563         ret = ath10k_setup_peer_smps(ar, arvif, bss_conf->bssid, &ht_cap);
1564         if (ret) {
1565                 ath10k_warn(ar, "failed to setup peer SMPS for vdev %i: %d\n",
1566                             arvif->vdev_id, ret);
1567                 return;
1568         }
1569
1570         ath10k_dbg(ar, ATH10K_DBG_MAC,
1571                    "mac vdev %d up (associated) bssid %pM aid %d\n",
1572                    arvif->vdev_id, bss_conf->bssid, bss_conf->aid);
1573
1574         WARN_ON(arvif->is_up);
1575
1576         arvif->aid = bss_conf->aid;
1577         ether_addr_copy(arvif->bssid, bss_conf->bssid);
1578
1579         ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, arvif->aid, arvif->bssid);
1580         if (ret) {
1581                 ath10k_warn(ar, "failed to set vdev %d up: %d\n",
1582                             arvif->vdev_id, ret);
1583                 return;
1584         }
1585
1586         arvif->is_up = true;
1587 }
1588
1589 static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
1590                                 struct ieee80211_vif *vif)
1591 {
1592         struct ath10k *ar = hw->priv;
1593         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1594         int ret;
1595
1596         lockdep_assert_held(&ar->conf_mutex);
1597
1598         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i disassoc bssid %pM\n",
1599                    arvif->vdev_id, arvif->bssid);
1600
1601         ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
1602         if (ret)
1603                 ath10k_warn(ar, "faield to down vdev %i: %d\n",
1604                             arvif->vdev_id, ret);
1605
1606         arvif->def_wep_key_idx = 0;
1607         arvif->is_up = false;
1608 }
1609
1610 static int ath10k_station_assoc(struct ath10k *ar,
1611                                 struct ieee80211_vif *vif,
1612                                 struct ieee80211_sta *sta,
1613                                 bool reassoc)
1614 {
1615         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1616         struct wmi_peer_assoc_complete_arg peer_arg;
1617         int ret = 0;
1618
1619         lockdep_assert_held(&ar->conf_mutex);
1620
1621         ret = ath10k_peer_assoc_prepare(ar, vif, sta, &peer_arg);
1622         if (ret) {
1623                 ath10k_warn(ar, "failed to prepare WMI peer assoc for %pM vdev %i: %i\n",
1624                             sta->addr, arvif->vdev_id, ret);
1625                 return ret;
1626         }
1627
1628         peer_arg.peer_reassoc = reassoc;
1629         ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
1630         if (ret) {
1631                 ath10k_warn(ar, "failed to run peer assoc for STA %pM vdev %i: %d\n",
1632                             sta->addr, arvif->vdev_id, ret);
1633                 return ret;
1634         }
1635
1636         /* Re-assoc is run only to update supported rates for given station. It
1637          * doesn't make much sense to reconfigure the peer completely.
1638          */
1639         if (!reassoc) {
1640                 ret = ath10k_setup_peer_smps(ar, arvif, sta->addr,
1641                                              &sta->ht_cap);
1642                 if (ret) {
1643                         ath10k_warn(ar, "failed to setup peer SMPS for vdev %d: %d\n",
1644                                     arvif->vdev_id, ret);
1645                         return ret;
1646                 }
1647
1648                 ret = ath10k_peer_assoc_qos_ap(ar, arvif, sta);
1649                 if (ret) {
1650                         ath10k_warn(ar, "failed to set qos params for STA %pM for vdev %i: %d\n",
1651                                     sta->addr, arvif->vdev_id, ret);
1652                         return ret;
1653                 }
1654
1655                 if (!sta->wme) {
1656                         arvif->num_legacy_stations++;
1657                         ret  = ath10k_recalc_rtscts_prot(arvif);
1658                         if (ret) {
1659                                 ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
1660                                             arvif->vdev_id, ret);
1661                                 return ret;
1662                         }
1663                 }
1664
1665                 ret = ath10k_install_peer_wep_keys(arvif, sta->addr);
1666                 if (ret) {
1667                         ath10k_warn(ar, "failed to install peer wep keys for vdev %i: %d\n",
1668                                     arvif->vdev_id, ret);
1669                         return ret;
1670                 }
1671         }
1672
1673         return ret;
1674 }
1675
1676 static int ath10k_station_disassoc(struct ath10k *ar,
1677                                    struct ieee80211_vif *vif,
1678                                    struct ieee80211_sta *sta)
1679 {
1680         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1681         int ret = 0;
1682
1683         lockdep_assert_held(&ar->conf_mutex);
1684
1685         if (!sta->wme) {
1686                 arvif->num_legacy_stations--;
1687                 ret = ath10k_recalc_rtscts_prot(arvif);
1688                 if (ret) {
1689                         ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
1690                                     arvif->vdev_id, ret);
1691                         return ret;
1692                 }
1693         }
1694
1695         ret = ath10k_clear_peer_keys(arvif, sta->addr);
1696         if (ret) {
1697                 ath10k_warn(ar, "failed to clear all peer wep keys for vdev %i: %d\n",
1698                             arvif->vdev_id, ret);
1699                 return ret;
1700         }
1701
1702         return ret;
1703 }
1704
1705 /**************/
1706 /* Regulatory */
1707 /**************/
1708
1709 static int ath10k_update_channel_list(struct ath10k *ar)
1710 {
1711         struct ieee80211_hw *hw = ar->hw;
1712         struct ieee80211_supported_band **bands;
1713         enum ieee80211_band band;
1714         struct ieee80211_channel *channel;
1715         struct wmi_scan_chan_list_arg arg = {0};
1716         struct wmi_channel_arg *ch;
1717         bool passive;
1718         int len;
1719         int ret;
1720         int i;
1721
1722         lockdep_assert_held(&ar->conf_mutex);
1723
1724         bands = hw->wiphy->bands;
1725         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1726                 if (!bands[band])
1727                         continue;
1728
1729                 for (i = 0; i < bands[band]->n_channels; i++) {
1730                         if (bands[band]->channels[i].flags &
1731                             IEEE80211_CHAN_DISABLED)
1732                                 continue;
1733
1734                         arg.n_channels++;
1735                 }
1736         }
1737
1738         len = sizeof(struct wmi_channel_arg) * arg.n_channels;
1739         arg.channels = kzalloc(len, GFP_KERNEL);
1740         if (!arg.channels)
1741                 return -ENOMEM;
1742
1743         ch = arg.channels;
1744         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
1745                 if (!bands[band])
1746                         continue;
1747
1748                 for (i = 0; i < bands[band]->n_channels; i++) {
1749                         channel = &bands[band]->channels[i];
1750
1751                         if (channel->flags & IEEE80211_CHAN_DISABLED)
1752                                 continue;
1753
1754                         ch->allow_ht   = true;
1755
1756                         /* FIXME: when should we really allow VHT? */
1757                         ch->allow_vht = true;
1758
1759                         ch->allow_ibss =
1760                                 !(channel->flags & IEEE80211_CHAN_NO_IR);
1761
1762                         ch->ht40plus =
1763                                 !(channel->flags & IEEE80211_CHAN_NO_HT40PLUS);
1764
1765                         ch->chan_radar =
1766                                 !!(channel->flags & IEEE80211_CHAN_RADAR);
1767
1768                         passive = channel->flags & IEEE80211_CHAN_NO_IR;
1769                         ch->passive = passive;
1770
1771                         ch->freq = channel->center_freq;
1772                         ch->band_center_freq1 = channel->center_freq;
1773                         ch->min_power = 0;
1774                         ch->max_power = channel->max_power * 2;
1775                         ch->max_reg_power = channel->max_reg_power * 2;
1776                         ch->max_antenna_gain = channel->max_antenna_gain * 2;
1777                         ch->reg_class_id = 0; /* FIXME */
1778
1779                         /* FIXME: why use only legacy modes, why not any
1780                          * HT/VHT modes? Would that even make any
1781                          * difference? */
1782                         if (channel->band == IEEE80211_BAND_2GHZ)
1783                                 ch->mode = MODE_11G;
1784                         else
1785                                 ch->mode = MODE_11A;
1786
1787                         if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN))
1788                                 continue;
1789
1790                         ath10k_dbg(ar, ATH10K_DBG_WMI,
1791                                    "mac channel [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n",
1792                                     ch - arg.channels, arg.n_channels,
1793                                    ch->freq, ch->max_power, ch->max_reg_power,
1794                                    ch->max_antenna_gain, ch->mode);
1795
1796                         ch++;
1797                 }
1798         }
1799
1800         ret = ath10k_wmi_scan_chan_list(ar, &arg);
1801         kfree(arg.channels);
1802
1803         return ret;
1804 }
1805
1806 static enum wmi_dfs_region
1807 ath10k_mac_get_dfs_region(enum nl80211_dfs_regions dfs_region)
1808 {
1809         switch (dfs_region) {
1810         case NL80211_DFS_UNSET:
1811                 return WMI_UNINIT_DFS_DOMAIN;
1812         case NL80211_DFS_FCC:
1813                 return WMI_FCC_DFS_DOMAIN;
1814         case NL80211_DFS_ETSI:
1815                 return WMI_ETSI_DFS_DOMAIN;
1816         case NL80211_DFS_JP:
1817                 return WMI_MKK4_DFS_DOMAIN;
1818         }
1819         return WMI_UNINIT_DFS_DOMAIN;
1820 }
1821
1822 static void ath10k_regd_update(struct ath10k *ar)
1823 {
1824         struct reg_dmn_pair_mapping *regpair;
1825         int ret;
1826         enum wmi_dfs_region wmi_dfs_reg;
1827         enum nl80211_dfs_regions nl_dfs_reg;
1828
1829         lockdep_assert_held(&ar->conf_mutex);
1830
1831         ret = ath10k_update_channel_list(ar);
1832         if (ret)
1833                 ath10k_warn(ar, "failed to update channel list: %d\n", ret);
1834
1835         regpair = ar->ath_common.regulatory.regpair;
1836
1837         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
1838                 nl_dfs_reg = ar->dfs_detector->region;
1839                 wmi_dfs_reg = ath10k_mac_get_dfs_region(nl_dfs_reg);
1840         } else {
1841                 wmi_dfs_reg = WMI_UNINIT_DFS_DOMAIN;
1842         }
1843
1844         /* Target allows setting up per-band regdomain but ath_common provides
1845          * a combined one only */
1846         ret = ath10k_wmi_pdev_set_regdomain(ar,
1847                                             regpair->reg_domain,
1848                                             regpair->reg_domain, /* 2ghz */
1849                                             regpair->reg_domain, /* 5ghz */
1850                                             regpair->reg_2ghz_ctl,
1851                                             regpair->reg_5ghz_ctl,
1852                                             wmi_dfs_reg);
1853         if (ret)
1854                 ath10k_warn(ar, "failed to set pdev regdomain: %d\n", ret);
1855 }
1856
1857 static void ath10k_reg_notifier(struct wiphy *wiphy,
1858                                 struct regulatory_request *request)
1859 {
1860         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
1861         struct ath10k *ar = hw->priv;
1862         bool result;
1863
1864         ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory);
1865
1866         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector) {
1867                 ath10k_dbg(ar, ATH10K_DBG_REGULATORY, "dfs region 0x%x\n",
1868                            request->dfs_region);
1869                 result = ar->dfs_detector->set_dfs_domain(ar->dfs_detector,
1870                                                           request->dfs_region);
1871                 if (!result)
1872                         ath10k_warn(ar, "DFS region 0x%X not supported, will trigger radar for every pulse\n",
1873                                     request->dfs_region);
1874         }
1875
1876         mutex_lock(&ar->conf_mutex);
1877         if (ar->state == ATH10K_STATE_ON)
1878                 ath10k_regd_update(ar);
1879         mutex_unlock(&ar->conf_mutex);
1880 }
1881
1882 /***************/
1883 /* TX handlers */
1884 /***************/
1885
1886 static u8 ath10k_tx_h_get_tid(struct ieee80211_hdr *hdr)
1887 {
1888         if (ieee80211_is_mgmt(hdr->frame_control))
1889                 return HTT_DATA_TX_EXT_TID_MGMT;
1890
1891         if (!ieee80211_is_data_qos(hdr->frame_control))
1892                 return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
1893
1894         if (!is_unicast_ether_addr(ieee80211_get_DA(hdr)))
1895                 return HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
1896
1897         return ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
1898 }
1899
1900 static u8 ath10k_tx_h_get_vdev_id(struct ath10k *ar, struct ieee80211_vif *vif)
1901 {
1902         if (vif)
1903                 return ath10k_vif_to_arvif(vif)->vdev_id;
1904
1905         if (ar->monitor_started)
1906                 return ar->monitor_vdev_id;
1907
1908         ath10k_warn(ar, "failed to resolve vdev id\n");
1909         return 0;
1910 }
1911
1912 /* HTT Tx uses Native Wifi tx mode which expects 802.11 frames without QoS
1913  * Control in the header.
1914  */
1915 static void ath10k_tx_h_nwifi(struct ieee80211_hw *hw, struct sk_buff *skb)
1916 {
1917         struct ieee80211_hdr *hdr = (void *)skb->data;
1918         struct ath10k_skb_cb *cb = ATH10K_SKB_CB(skb);
1919         u8 *qos_ctl;
1920
1921         if (!ieee80211_is_data_qos(hdr->frame_control))
1922                 return;
1923
1924         qos_ctl = ieee80211_get_qos_ctl(hdr);
1925         memmove(skb->data + IEEE80211_QOS_CTL_LEN,
1926                 skb->data, (void *)qos_ctl - (void *)skb->data);
1927         skb_pull(skb, IEEE80211_QOS_CTL_LEN);
1928
1929         /* Fw/Hw generates a corrupted QoS Control Field for QoS NullFunc
1930          * frames. Powersave is handled by the fw/hw so QoS NyllFunc frames are
1931          * used only for CQM purposes (e.g. hostapd station keepalive ping) so
1932          * it is safe to downgrade to NullFunc.
1933          */
1934         if (ieee80211_is_qos_nullfunc(hdr->frame_control)) {
1935                 hdr->frame_control &= ~__cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1936                 cb->htt.tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST;
1937         }
1938 }
1939
1940 static void ath10k_tx_wep_key_work(struct work_struct *work)
1941 {
1942         struct ath10k_vif *arvif = container_of(work, struct ath10k_vif,
1943                                                 wep_key_work);
1944         struct ath10k *ar = arvif->ar;
1945         int ret, keyidx = arvif->def_wep_key_newidx;
1946
1947         mutex_lock(&arvif->ar->conf_mutex);
1948
1949         if (arvif->ar->state != ATH10K_STATE_ON)
1950                 goto unlock;
1951
1952         if (arvif->def_wep_key_idx == keyidx)
1953                 goto unlock;
1954
1955         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d set keyidx %d\n",
1956                    arvif->vdev_id, keyidx);
1957
1958         ret = ath10k_wmi_vdev_set_param(arvif->ar,
1959                                         arvif->vdev_id,
1960                                         arvif->ar->wmi.vdev_param->def_keyid,
1961                                         keyidx);
1962         if (ret) {
1963                 ath10k_warn(ar, "failed to update wep key index for vdev %d: %d\n",
1964                             arvif->vdev_id,
1965                             ret);
1966                 goto unlock;
1967         }
1968
1969         arvif->def_wep_key_idx = keyidx;
1970
1971 unlock:
1972         mutex_unlock(&arvif->ar->conf_mutex);
1973 }
1974
1975 static void ath10k_tx_h_update_wep_key(struct ieee80211_vif *vif,
1976                                        struct ieee80211_key_conf *key,
1977                                        struct sk_buff *skb)
1978 {
1979         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
1980         struct ath10k *ar = arvif->ar;
1981         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1982
1983         if (!ieee80211_has_protected(hdr->frame_control))
1984                 return;
1985
1986         if (!key)
1987                 return;
1988
1989         if (key->cipher != WLAN_CIPHER_SUITE_WEP40 &&
1990             key->cipher != WLAN_CIPHER_SUITE_WEP104)
1991                 return;
1992
1993         if (key->keyidx == arvif->def_wep_key_idx)
1994                 return;
1995
1996         /* FIXME: Most likely a few frames will be TXed with an old key. Simply
1997          * queueing frames until key index is updated is not an option because
1998          * sk_buff may need more processing to be done, e.g. offchannel */
1999         arvif->def_wep_key_newidx = key->keyidx;
2000         ieee80211_queue_work(ar->hw, &arvif->wep_key_work);
2001 }
2002
2003 static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar,
2004                                        struct ieee80211_vif *vif,
2005                                        struct sk_buff *skb)
2006 {
2007         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2008         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2009
2010         /* This is case only for P2P_GO */
2011         if (arvif->vdev_type != WMI_VDEV_TYPE_AP ||
2012             arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO)
2013                 return;
2014
2015         if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) {
2016                 spin_lock_bh(&ar->data_lock);
2017                 if (arvif->u.ap.noa_data)
2018                         if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len,
2019                                               GFP_ATOMIC))
2020                                 memcpy(skb_put(skb, arvif->u.ap.noa_len),
2021                                        arvif->u.ap.noa_data,
2022                                        arvif->u.ap.noa_len);
2023                 spin_unlock_bh(&ar->data_lock);
2024         }
2025 }
2026
2027 static bool ath10k_mac_need_offchan_tx_work(struct ath10k *ar)
2028 {
2029         /* FIXME: Not really sure since when the behaviour changed. At some
2030          * point new firmware stopped requiring creation of peer entries for
2031          * offchannel tx (and actually creating them causes issues with wmi-htc
2032          * tx credit replenishment and reliability). Assuming it's at least 3.4
2033          * because that's when the `freq` was introduced to TX_FRM HTT command.
2034          */
2035         return !(ar->htt.target_version_major >= 3 &&
2036                  ar->htt.target_version_minor >= 4);
2037 }
2038
2039 static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb)
2040 {
2041         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2042         int ret = 0;
2043
2044         if (ar->htt.target_version_major >= 3) {
2045                 /* Since HTT 3.0 there is no separate mgmt tx command */
2046                 ret = ath10k_htt_tx(&ar->htt, skb);
2047                 goto exit;
2048         }
2049
2050         if (ieee80211_is_mgmt(hdr->frame_control)) {
2051                 if (test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
2052                              ar->fw_features)) {
2053                         if (skb_queue_len(&ar->wmi_mgmt_tx_queue) >=
2054                             ATH10K_MAX_NUM_MGMT_PENDING) {
2055                                 ath10k_warn(ar, "reached WMI management transmit queue limit\n");
2056                                 ret = -EBUSY;
2057                                 goto exit;
2058                         }
2059
2060                         skb_queue_tail(&ar->wmi_mgmt_tx_queue, skb);
2061                         ieee80211_queue_work(ar->hw, &ar->wmi_mgmt_tx_work);
2062                 } else {
2063                         ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2064                 }
2065         } else if (!test_bit(ATH10K_FW_FEATURE_HAS_WMI_MGMT_TX,
2066                              ar->fw_features) &&
2067                    ieee80211_is_nullfunc(hdr->frame_control)) {
2068                 /* FW does not report tx status properly for NullFunc frames
2069                  * unless they are sent through mgmt tx path. mac80211 sends
2070                  * those frames when it detects link/beacon loss and depends
2071                  * on the tx status to be correct. */
2072                 ret = ath10k_htt_mgmt_tx(&ar->htt, skb);
2073         } else {
2074                 ret = ath10k_htt_tx(&ar->htt, skb);
2075         }
2076
2077 exit:
2078         if (ret) {
2079                 ath10k_warn(ar, "failed to transmit packet, dropping: %d\n",
2080                             ret);
2081                 ieee80211_free_txskb(ar->hw, skb);
2082         }
2083 }
2084
2085 void ath10k_offchan_tx_purge(struct ath10k *ar)
2086 {
2087         struct sk_buff *skb;
2088
2089         for (;;) {
2090                 skb = skb_dequeue(&ar->offchan_tx_queue);
2091                 if (!skb)
2092                         break;
2093
2094                 ieee80211_free_txskb(ar->hw, skb);
2095         }
2096 }
2097
2098 void ath10k_offchan_tx_work(struct work_struct *work)
2099 {
2100         struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work);
2101         struct ath10k_peer *peer;
2102         struct ieee80211_hdr *hdr;
2103         struct sk_buff *skb;
2104         const u8 *peer_addr;
2105         int vdev_id;
2106         int ret;
2107
2108         /* FW requirement: We must create a peer before FW will send out
2109          * an offchannel frame. Otherwise the frame will be stuck and
2110          * never transmitted. We delete the peer upon tx completion.
2111          * It is unlikely that a peer for offchannel tx will already be
2112          * present. However it may be in some rare cases so account for that.
2113          * Otherwise we might remove a legitimate peer and break stuff. */
2114
2115         for (;;) {
2116                 skb = skb_dequeue(&ar->offchan_tx_queue);
2117                 if (!skb)
2118                         break;
2119
2120                 mutex_lock(&ar->conf_mutex);
2121
2122                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac offchannel skb %p\n",
2123                            skb);
2124
2125                 hdr = (struct ieee80211_hdr *)skb->data;
2126                 peer_addr = ieee80211_get_DA(hdr);
2127                 vdev_id = ATH10K_SKB_CB(skb)->vdev_id;
2128
2129                 spin_lock_bh(&ar->data_lock);
2130                 peer = ath10k_peer_find(ar, vdev_id, peer_addr);
2131                 spin_unlock_bh(&ar->data_lock);
2132
2133                 if (peer)
2134                         /* FIXME: should this use ath10k_warn()? */
2135                         ath10k_dbg(ar, ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n",
2136                                    peer_addr, vdev_id);
2137
2138                 if (!peer) {
2139                         ret = ath10k_peer_create(ar, vdev_id, peer_addr);
2140                         if (ret)
2141                                 ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
2142                                             peer_addr, vdev_id, ret);
2143                 }
2144
2145                 spin_lock_bh(&ar->data_lock);
2146                 reinit_completion(&ar->offchan_tx_completed);
2147                 ar->offchan_tx_skb = skb;
2148                 spin_unlock_bh(&ar->data_lock);
2149
2150                 ath10k_tx_htt(ar, skb);
2151
2152                 ret = wait_for_completion_timeout(&ar->offchan_tx_completed,
2153                                                   3 * HZ);
2154                 if (ret <= 0)
2155                         ath10k_warn(ar, "timed out waiting for offchannel skb %p\n",
2156                                     skb);
2157
2158                 if (!peer) {
2159                         ret = ath10k_peer_delete(ar, vdev_id, peer_addr);
2160                         if (ret)
2161                                 ath10k_warn(ar, "failed to delete peer %pM on vdev %d: %d\n",
2162                                             peer_addr, vdev_id, ret);
2163                 }
2164
2165                 mutex_unlock(&ar->conf_mutex);
2166         }
2167 }
2168
2169 void ath10k_mgmt_over_wmi_tx_purge(struct ath10k *ar)
2170 {
2171         struct sk_buff *skb;
2172
2173         for (;;) {
2174                 skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
2175                 if (!skb)
2176                         break;
2177
2178                 ieee80211_free_txskb(ar->hw, skb);
2179         }
2180 }
2181
2182 void ath10k_mgmt_over_wmi_tx_work(struct work_struct *work)
2183 {
2184         struct ath10k *ar = container_of(work, struct ath10k, wmi_mgmt_tx_work);
2185         struct sk_buff *skb;
2186         int ret;
2187
2188         for (;;) {
2189                 skb = skb_dequeue(&ar->wmi_mgmt_tx_queue);
2190                 if (!skb)
2191                         break;
2192
2193                 ret = ath10k_wmi_mgmt_tx(ar, skb);
2194                 if (ret) {
2195                         ath10k_warn(ar, "failed to transmit management frame via WMI: %d\n",
2196                                     ret);
2197                         ieee80211_free_txskb(ar->hw, skb);
2198                 }
2199         }
2200 }
2201
2202 /************/
2203 /* Scanning */
2204 /************/
2205
2206 void __ath10k_scan_finish(struct ath10k *ar)
2207 {
2208         lockdep_assert_held(&ar->data_lock);
2209
2210         switch (ar->scan.state) {
2211         case ATH10K_SCAN_IDLE:
2212                 break;
2213         case ATH10K_SCAN_RUNNING:
2214                 if (ar->scan.is_roc)
2215                         ieee80211_remain_on_channel_expired(ar->hw);
2216         case ATH10K_SCAN_ABORTING:
2217                 if (!ar->scan.is_roc)
2218                         ieee80211_scan_completed(ar->hw,
2219                                                  (ar->scan.state ==
2220                                                   ATH10K_SCAN_ABORTING));
2221                 /* fall through */
2222         case ATH10K_SCAN_STARTING:
2223                 ar->scan.state = ATH10K_SCAN_IDLE;
2224                 ar->scan_channel = NULL;
2225                 ath10k_offchan_tx_purge(ar);
2226                 cancel_delayed_work(&ar->scan.timeout);
2227                 complete_all(&ar->scan.completed);
2228                 break;
2229         }
2230 }
2231
2232 void ath10k_scan_finish(struct ath10k *ar)
2233 {
2234         spin_lock_bh(&ar->data_lock);
2235         __ath10k_scan_finish(ar);
2236         spin_unlock_bh(&ar->data_lock);
2237 }
2238
2239 static int ath10k_scan_stop(struct ath10k *ar)
2240 {
2241         struct wmi_stop_scan_arg arg = {
2242                 .req_id = 1, /* FIXME */
2243                 .req_type = WMI_SCAN_STOP_ONE,
2244                 .u.scan_id = ATH10K_SCAN_ID,
2245         };
2246         int ret;
2247
2248         lockdep_assert_held(&ar->conf_mutex);
2249
2250         ret = ath10k_wmi_stop_scan(ar, &arg);
2251         if (ret) {
2252                 ath10k_warn(ar, "failed to stop wmi scan: %d\n", ret);
2253                 goto out;
2254         }
2255
2256         ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ);
2257         if (ret == 0) {
2258                 ath10k_warn(ar, "failed to receive scan abortion completion: timed out\n");
2259                 ret = -ETIMEDOUT;
2260         } else if (ret > 0) {
2261                 ret = 0;
2262         }
2263
2264 out:
2265         /* Scan state should be updated upon scan completion but in case
2266          * firmware fails to deliver the event (for whatever reason) it is
2267          * desired to clean up scan state anyway. Firmware may have just
2268          * dropped the scan completion event delivery due to transport pipe
2269          * being overflown with data and/or it can recover on its own before
2270          * next scan request is submitted.
2271          */
2272         spin_lock_bh(&ar->data_lock);
2273         if (ar->scan.state != ATH10K_SCAN_IDLE)
2274                 __ath10k_scan_finish(ar);
2275         spin_unlock_bh(&ar->data_lock);
2276
2277         return ret;
2278 }
2279
2280 static void ath10k_scan_abort(struct ath10k *ar)
2281 {
2282         int ret;
2283
2284         lockdep_assert_held(&ar->conf_mutex);
2285
2286         spin_lock_bh(&ar->data_lock);
2287
2288         switch (ar->scan.state) {
2289         case ATH10K_SCAN_IDLE:
2290                 /* This can happen if timeout worker kicked in and called
2291                  * abortion while scan completion was being processed.
2292                  */
2293                 break;
2294         case ATH10K_SCAN_STARTING:
2295         case ATH10K_SCAN_ABORTING:
2296                 ath10k_warn(ar, "refusing scan abortion due to invalid scan state: %s (%d)\n",
2297                             ath10k_scan_state_str(ar->scan.state),
2298                             ar->scan.state);
2299                 break;
2300         case ATH10K_SCAN_RUNNING:
2301                 ar->scan.state = ATH10K_SCAN_ABORTING;
2302                 spin_unlock_bh(&ar->data_lock);
2303
2304                 ret = ath10k_scan_stop(ar);
2305                 if (ret)
2306                         ath10k_warn(ar, "failed to abort scan: %d\n", ret);
2307
2308                 spin_lock_bh(&ar->data_lock);
2309                 break;
2310         }
2311
2312         spin_unlock_bh(&ar->data_lock);
2313 }
2314
2315 void ath10k_scan_timeout_work(struct work_struct *work)
2316 {
2317         struct ath10k *ar = container_of(work, struct ath10k,
2318                                          scan.timeout.work);
2319
2320         mutex_lock(&ar->conf_mutex);
2321         ath10k_scan_abort(ar);
2322         mutex_unlock(&ar->conf_mutex);
2323 }
2324
2325 static int ath10k_start_scan(struct ath10k *ar,
2326                              const struct wmi_start_scan_arg *arg)
2327 {
2328         int ret;
2329
2330         lockdep_assert_held(&ar->conf_mutex);
2331
2332         ret = ath10k_wmi_start_scan(ar, arg);
2333         if (ret)
2334                 return ret;
2335
2336         ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ);
2337         if (ret == 0) {
2338                 ret = ath10k_scan_stop(ar);
2339                 if (ret)
2340                         ath10k_warn(ar, "failed to stop scan: %d\n", ret);
2341
2342                 return -ETIMEDOUT;
2343         }
2344
2345         /* Add a 200ms margin to account for event/command processing */
2346         ieee80211_queue_delayed_work(ar->hw, &ar->scan.timeout,
2347                                      msecs_to_jiffies(arg->max_scan_time+200));
2348         return 0;
2349 }
2350
2351 /**********************/
2352 /* mac80211 callbacks */
2353 /**********************/
2354
2355 static void ath10k_tx(struct ieee80211_hw *hw,
2356                       struct ieee80211_tx_control *control,
2357                       struct sk_buff *skb)
2358 {
2359         struct ath10k *ar = hw->priv;
2360         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
2361         struct ieee80211_vif *vif = info->control.vif;
2362         struct ieee80211_key_conf *key = info->control.hw_key;
2363         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
2364
2365         /* We should disable CCK RATE due to P2P */
2366         if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE)
2367                 ath10k_dbg(ar, ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n");
2368
2369         ATH10K_SKB_CB(skb)->htt.is_offchan = false;
2370         ATH10K_SKB_CB(skb)->htt.tid = ath10k_tx_h_get_tid(hdr);
2371         ATH10K_SKB_CB(skb)->vdev_id = ath10k_tx_h_get_vdev_id(ar, vif);
2372
2373         /* it makes no sense to process injected frames like that */
2374         if (vif && vif->type != NL80211_IFTYPE_MONITOR) {
2375                 ath10k_tx_h_nwifi(hw, skb);
2376                 ath10k_tx_h_update_wep_key(vif, key, skb);
2377                 ath10k_tx_h_add_p2p_noa_ie(ar, vif, skb);
2378                 ath10k_tx_h_seq_no(vif, skb);
2379         }
2380
2381         if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) {
2382                 spin_lock_bh(&ar->data_lock);
2383                 ATH10K_SKB_CB(skb)->htt.freq = ar->scan.roc_freq;
2384                 ATH10K_SKB_CB(skb)->vdev_id = ar->scan.vdev_id;
2385                 spin_unlock_bh(&ar->data_lock);
2386
2387                 if (ath10k_mac_need_offchan_tx_work(ar)) {
2388                         ATH10K_SKB_CB(skb)->htt.freq = 0;
2389                         ATH10K_SKB_CB(skb)->htt.is_offchan = true;
2390
2391                         ath10k_dbg(ar, ATH10K_DBG_MAC, "queued offchannel skb %p\n",
2392                                    skb);
2393
2394                         skb_queue_tail(&ar->offchan_tx_queue, skb);
2395                         ieee80211_queue_work(hw, &ar->offchan_tx_work);
2396                         return;
2397                 }
2398         }
2399
2400         ath10k_tx_htt(ar, skb);
2401 }
2402
2403 /* Must not be called with conf_mutex held as workers can use that also. */
2404 void ath10k_drain_tx(struct ath10k *ar)
2405 {
2406         /* make sure rcu-protected mac80211 tx path itself is drained */
2407         synchronize_net();
2408
2409         ath10k_offchan_tx_purge(ar);
2410         ath10k_mgmt_over_wmi_tx_purge(ar);
2411
2412         cancel_work_sync(&ar->offchan_tx_work);
2413         cancel_work_sync(&ar->wmi_mgmt_tx_work);
2414 }
2415
2416 void ath10k_halt(struct ath10k *ar)
2417 {
2418         struct ath10k_vif *arvif;
2419
2420         lockdep_assert_held(&ar->conf_mutex);
2421
2422         clear_bit(ATH10K_CAC_RUNNING, &ar->dev_flags);
2423         ar->filter_flags = 0;
2424         ar->monitor = false;
2425
2426         if (ar->monitor_started)
2427                 ath10k_monitor_stop(ar);
2428
2429         ar->monitor_started = false;
2430
2431         ath10k_scan_finish(ar);
2432         ath10k_peer_cleanup_all(ar);
2433         ath10k_core_stop(ar);
2434         ath10k_hif_power_down(ar);
2435
2436         spin_lock_bh(&ar->data_lock);
2437         list_for_each_entry(arvif, &ar->arvifs, list)
2438                 ath10k_mac_vif_beacon_cleanup(arvif);
2439         spin_unlock_bh(&ar->data_lock);
2440 }
2441
2442 static int ath10k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant)
2443 {
2444         struct ath10k *ar = hw->priv;
2445
2446         mutex_lock(&ar->conf_mutex);
2447
2448         if (ar->cfg_tx_chainmask) {
2449                 *tx_ant = ar->cfg_tx_chainmask;
2450                 *rx_ant = ar->cfg_rx_chainmask;
2451         } else {
2452                 *tx_ant = ar->supp_tx_chainmask;
2453                 *rx_ant = ar->supp_rx_chainmask;
2454         }
2455
2456         mutex_unlock(&ar->conf_mutex);
2457
2458         return 0;
2459 }
2460
2461 static void ath10k_check_chain_mask(struct ath10k *ar, u32 cm, const char *dbg)
2462 {
2463         /* It is not clear that allowing gaps in chainmask
2464          * is helpful.  Probably it will not do what user
2465          * is hoping for, so warn in that case.
2466          */
2467         if (cm == 15 || cm == 7 || cm == 3 || cm == 1 || cm == 0)
2468                 return;
2469
2470         ath10k_warn(ar, "mac %s antenna chainmask may be invalid: 0x%x.  Suggested values: 15, 7, 3, 1 or 0.\n",
2471                     dbg, cm);
2472 }
2473
2474 static int __ath10k_set_antenna(struct ath10k *ar, u32 tx_ant, u32 rx_ant)
2475 {
2476         int ret;
2477
2478         lockdep_assert_held(&ar->conf_mutex);
2479
2480         ath10k_check_chain_mask(ar, tx_ant, "tx");
2481         ath10k_check_chain_mask(ar, rx_ant, "rx");
2482
2483         ar->cfg_tx_chainmask = tx_ant;
2484         ar->cfg_rx_chainmask = rx_ant;
2485
2486         if ((ar->state != ATH10K_STATE_ON) &&
2487             (ar->state != ATH10K_STATE_RESTARTED))
2488                 return 0;
2489
2490         ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->tx_chain_mask,
2491                                         tx_ant);
2492         if (ret) {
2493                 ath10k_warn(ar, "failed to set tx-chainmask: %d, req 0x%x\n",
2494                             ret, tx_ant);
2495                 return ret;
2496         }
2497
2498         ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->rx_chain_mask,
2499                                         rx_ant);
2500         if (ret) {
2501                 ath10k_warn(ar, "failed to set rx-chainmask: %d, req 0x%x\n",
2502                             ret, rx_ant);
2503                 return ret;
2504         }
2505
2506         return 0;
2507 }
2508
2509 static int ath10k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
2510 {
2511         struct ath10k *ar = hw->priv;
2512         int ret;
2513
2514         mutex_lock(&ar->conf_mutex);
2515         ret = __ath10k_set_antenna(ar, tx_ant, rx_ant);
2516         mutex_unlock(&ar->conf_mutex);
2517         return ret;
2518 }
2519
2520 static int ath10k_start(struct ieee80211_hw *hw)
2521 {
2522         struct ath10k *ar = hw->priv;
2523         int ret = 0;
2524
2525         /*
2526          * This makes sense only when restarting hw. It is harmless to call
2527          * uncoditionally. This is necessary to make sure no HTT/WMI tx
2528          * commands will be submitted while restarting.
2529          */
2530         ath10k_drain_tx(ar);
2531
2532         mutex_lock(&ar->conf_mutex);
2533
2534         switch (ar->state) {
2535         case ATH10K_STATE_OFF:
2536                 ar->state = ATH10K_STATE_ON;
2537                 break;
2538         case ATH10K_STATE_RESTARTING:
2539                 ath10k_halt(ar);
2540                 ar->state = ATH10K_STATE_RESTARTED;
2541                 break;
2542         case ATH10K_STATE_ON:
2543         case ATH10K_STATE_RESTARTED:
2544         case ATH10K_STATE_WEDGED:
2545                 WARN_ON(1);
2546                 ret = -EINVAL;
2547                 goto err;
2548         case ATH10K_STATE_UTF:
2549                 ret = -EBUSY;
2550                 goto err;
2551         }
2552
2553         ret = ath10k_hif_power_up(ar);
2554         if (ret) {
2555                 ath10k_err(ar, "Could not init hif: %d\n", ret);
2556                 goto err_off;
2557         }
2558
2559         ret = ath10k_core_start(ar, ATH10K_FIRMWARE_MODE_NORMAL);
2560         if (ret) {
2561                 ath10k_err(ar, "Could not init core: %d\n", ret);
2562                 goto err_power_down;
2563         }
2564
2565         ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->pmf_qos, 1);
2566         if (ret) {
2567                 ath10k_warn(ar, "failed to enable PMF QOS: %d\n", ret);
2568                 goto err_core_stop;
2569         }
2570
2571         ret = ath10k_wmi_pdev_set_param(ar, ar->wmi.pdev_param->dynamic_bw, 1);
2572         if (ret) {
2573                 ath10k_warn(ar, "failed to enable dynamic BW: %d\n", ret);
2574                 goto err_core_stop;
2575         }
2576
2577         if (ar->cfg_tx_chainmask)
2578                 __ath10k_set_antenna(ar, ar->cfg_tx_chainmask,
2579                                      ar->cfg_rx_chainmask);
2580
2581         /*
2582          * By default FW set ARP frames ac to voice (6). In that case ARP
2583          * exchange is not working properly for UAPSD enabled AP. ARP requests
2584          * which arrives with access category 0 are processed by network stack
2585          * and send back with access category 0, but FW changes access category
2586          * to 6. Set ARP frames access category to best effort (0) solves
2587          * this problem.
2588          */
2589
2590         ret = ath10k_wmi_pdev_set_param(ar,
2591                                         ar->wmi.pdev_param->arp_ac_override, 0);
2592         if (ret) {
2593                 ath10k_warn(ar, "failed to set arp ac override parameter: %d\n",
2594                             ret);
2595                 goto err_core_stop;
2596         }
2597
2598         ar->num_started_vdevs = 0;
2599         ath10k_regd_update(ar);
2600
2601         ath10k_spectral_start(ar);
2602
2603         mutex_unlock(&ar->conf_mutex);
2604         return 0;
2605
2606 err_core_stop:
2607         ath10k_core_stop(ar);
2608
2609 err_power_down:
2610         ath10k_hif_power_down(ar);
2611
2612 err_off:
2613         ar->state = ATH10K_STATE_OFF;
2614
2615 err:
2616         mutex_unlock(&ar->conf_mutex);
2617         return ret;
2618 }
2619
2620 static void ath10k_stop(struct ieee80211_hw *hw)
2621 {
2622         struct ath10k *ar = hw->priv;
2623
2624         ath10k_drain_tx(ar);
2625
2626         mutex_lock(&ar->conf_mutex);
2627         if (ar->state != ATH10K_STATE_OFF) {
2628                 ath10k_halt(ar);
2629                 ar->state = ATH10K_STATE_OFF;
2630         }
2631         mutex_unlock(&ar->conf_mutex);
2632
2633         cancel_delayed_work_sync(&ar->scan.timeout);
2634         cancel_work_sync(&ar->restart_work);
2635 }
2636
2637 static int ath10k_config_ps(struct ath10k *ar)
2638 {
2639         struct ath10k_vif *arvif;
2640         int ret = 0;
2641
2642         lockdep_assert_held(&ar->conf_mutex);
2643
2644         list_for_each_entry(arvif, &ar->arvifs, list) {
2645                 ret = ath10k_mac_vif_setup_ps(arvif);
2646                 if (ret) {
2647                         ath10k_warn(ar, "failed to setup powersave: %d\n", ret);
2648                         break;
2649                 }
2650         }
2651
2652         return ret;
2653 }
2654
2655 static const char *chandef_get_width(enum nl80211_chan_width width)
2656 {
2657         switch (width) {
2658         case NL80211_CHAN_WIDTH_20_NOHT:
2659                 return "20 (noht)";
2660         case NL80211_CHAN_WIDTH_20:
2661                 return "20";
2662         case NL80211_CHAN_WIDTH_40:
2663                 return "40";
2664         case NL80211_CHAN_WIDTH_80:
2665                 return "80";
2666         case NL80211_CHAN_WIDTH_80P80:
2667                 return "80+80";
2668         case NL80211_CHAN_WIDTH_160:
2669                 return "160";
2670         case NL80211_CHAN_WIDTH_5:
2671                 return "5";
2672         case NL80211_CHAN_WIDTH_10:
2673                 return "10";
2674         }
2675         return "?";
2676 }
2677
2678 static void ath10k_config_chan(struct ath10k *ar)
2679 {
2680         struct ath10k_vif *arvif;
2681         int ret;
2682
2683         lockdep_assert_held(&ar->conf_mutex);
2684
2685         ath10k_dbg(ar, ATH10K_DBG_MAC,
2686                    "mac config channel to %dMHz (cf1 %dMHz cf2 %dMHz width %s)\n",
2687                    ar->chandef.chan->center_freq,
2688                    ar->chandef.center_freq1,
2689                    ar->chandef.center_freq2,
2690                    chandef_get_width(ar->chandef.width));
2691
2692         /* First stop monitor interface. Some FW versions crash if there's a
2693          * lone monitor interface. */
2694         if (ar->monitor_started)
2695                 ath10k_monitor_stop(ar);
2696
2697         list_for_each_entry(arvif, &ar->arvifs, list) {
2698                 if (!arvif->is_started)
2699                         continue;
2700
2701                 if (!arvif->is_up)
2702                         continue;
2703
2704                 if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
2705                         continue;
2706
2707                 ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id);
2708                 if (ret) {
2709                         ath10k_warn(ar, "failed to down vdev %d: %d\n",
2710                                     arvif->vdev_id, ret);
2711                         continue;
2712                 }
2713         }
2714
2715         /* all vdevs are downed now - attempt to restart and re-up them */
2716
2717         list_for_each_entry(arvif, &ar->arvifs, list) {
2718                 if (!arvif->is_started)
2719                         continue;
2720
2721                 if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR)
2722                         continue;
2723
2724                 ret = ath10k_vdev_restart(arvif);
2725                 if (ret) {
2726                         ath10k_warn(ar, "failed to restart vdev %d: %d\n",
2727                                     arvif->vdev_id, ret);
2728                         continue;
2729                 }
2730
2731                 if (!arvif->is_up)
2732                         continue;
2733
2734                 ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid,
2735                                          arvif->bssid);
2736                 if (ret) {
2737                         ath10k_warn(ar, "failed to bring vdev up %d: %d\n",
2738                                     arvif->vdev_id, ret);
2739                         continue;
2740                 }
2741         }
2742
2743         ath10k_monitor_recalc(ar);
2744 }
2745
2746 static int ath10k_mac_txpower_setup(struct ath10k *ar, int txpower)
2747 {
2748         int ret;
2749         u32 param;
2750
2751         lockdep_assert_held(&ar->conf_mutex);
2752
2753         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac txpower %d\n", txpower);
2754
2755         param = ar->wmi.pdev_param->txpower_limit2g;
2756         ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
2757         if (ret) {
2758                 ath10k_warn(ar, "failed to set 2g txpower %d: %d\n",
2759                             txpower, ret);
2760                 return ret;
2761         }
2762
2763         param = ar->wmi.pdev_param->txpower_limit5g;
2764         ret = ath10k_wmi_pdev_set_param(ar, param, txpower * 2);
2765         if (ret) {
2766                 ath10k_warn(ar, "failed to set 5g txpower %d: %d\n",
2767                             txpower, ret);
2768                 return ret;
2769         }
2770
2771         return 0;
2772 }
2773
2774 static int ath10k_mac_txpower_recalc(struct ath10k *ar)
2775 {
2776         struct ath10k_vif *arvif;
2777         int ret, txpower = -1;
2778
2779         lockdep_assert_held(&ar->conf_mutex);
2780
2781         list_for_each_entry(arvif, &ar->arvifs, list) {
2782                 WARN_ON(arvif->txpower < 0);
2783
2784                 if (txpower == -1)
2785                         txpower = arvif->txpower;
2786                 else
2787                         txpower = min(txpower, arvif->txpower);
2788         }
2789
2790         if (WARN_ON(txpower == -1))
2791                 return -EINVAL;
2792
2793         ret = ath10k_mac_txpower_setup(ar, txpower);
2794         if (ret) {
2795                 ath10k_warn(ar, "failed to setup tx power %d: %d\n",
2796                             txpower, ret);
2797                 return ret;
2798         }
2799
2800         return 0;
2801 }
2802
2803 static int ath10k_config(struct ieee80211_hw *hw, u32 changed)
2804 {
2805         struct ath10k *ar = hw->priv;
2806         struct ieee80211_conf *conf = &hw->conf;
2807         int ret = 0;
2808
2809         mutex_lock(&ar->conf_mutex);
2810
2811         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
2812                 ath10k_dbg(ar, ATH10K_DBG_MAC,
2813                            "mac config channel %dMHz flags 0x%x radar %d\n",
2814                            conf->chandef.chan->center_freq,
2815                            conf->chandef.chan->flags,
2816                            conf->radar_enabled);
2817
2818                 spin_lock_bh(&ar->data_lock);
2819                 ar->rx_channel = conf->chandef.chan;
2820                 spin_unlock_bh(&ar->data_lock);
2821
2822                 ar->radar_enabled = conf->radar_enabled;
2823                 ath10k_recalc_radar_detection(ar);
2824
2825                 if (!cfg80211_chandef_identical(&ar->chandef, &conf->chandef)) {
2826                         ar->chandef = conf->chandef;
2827                         ath10k_config_chan(ar);
2828                 }
2829         }
2830
2831         if (changed & IEEE80211_CONF_CHANGE_PS)
2832                 ath10k_config_ps(ar);
2833
2834         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
2835                 ar->monitor = conf->flags & IEEE80211_CONF_MONITOR;
2836                 ret = ath10k_monitor_recalc(ar);
2837                 if (ret)
2838                         ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
2839         }
2840
2841         mutex_unlock(&ar->conf_mutex);
2842         return ret;
2843 }
2844
2845 static u32 get_nss_from_chainmask(u16 chain_mask)
2846 {
2847         if ((chain_mask & 0x15) == 0x15)
2848                 return 4;
2849         else if ((chain_mask & 0x7) == 0x7)
2850                 return 3;
2851         else if ((chain_mask & 0x3) == 0x3)
2852                 return 2;
2853         return 1;
2854 }
2855
2856 /*
2857  * TODO:
2858  * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE,
2859  * because we will send mgmt frames without CCK. This requirement
2860  * for P2P_FIND/GO_NEG should be handled by checking CCK flag
2861  * in the TX packet.
2862  */
2863 static int ath10k_add_interface(struct ieee80211_hw *hw,
2864                                 struct ieee80211_vif *vif)
2865 {
2866         struct ath10k *ar = hw->priv;
2867         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
2868         enum wmi_sta_powersave_param param;
2869         int ret = 0;
2870         u32 value;
2871         int bit;
2872         u32 vdev_param;
2873
2874         mutex_lock(&ar->conf_mutex);
2875
2876         memset(arvif, 0, sizeof(*arvif));
2877
2878         arvif->ar = ar;
2879         arvif->vif = vif;
2880
2881         INIT_WORK(&arvif->wep_key_work, ath10k_tx_wep_key_work);
2882         INIT_LIST_HEAD(&arvif->list);
2883
2884         if (ar->free_vdev_map == 0) {
2885                 ath10k_warn(ar, "Free vdev map is empty, no more interfaces allowed.\n");
2886                 ret = -EBUSY;
2887                 goto err;
2888         }
2889         bit = __ffs64(ar->free_vdev_map);
2890
2891         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac create vdev %i map %llx\n",
2892                    bit, ar->free_vdev_map);
2893
2894         arvif->vdev_id = bit;
2895         arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE;
2896
2897         if (ar->p2p)
2898                 arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE;
2899
2900         switch (vif->type) {
2901         case NL80211_IFTYPE_UNSPECIFIED:
2902         case NL80211_IFTYPE_STATION:
2903                 arvif->vdev_type = WMI_VDEV_TYPE_STA;
2904                 if (vif->p2p)
2905                         arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT;
2906                 break;
2907         case NL80211_IFTYPE_ADHOC:
2908                 arvif->vdev_type = WMI_VDEV_TYPE_IBSS;
2909                 break;
2910         case NL80211_IFTYPE_AP:
2911                 arvif->vdev_type = WMI_VDEV_TYPE_AP;
2912
2913                 if (vif->p2p)
2914                         arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO;
2915                 break;
2916         case NL80211_IFTYPE_MONITOR:
2917                 arvif->vdev_type = WMI_VDEV_TYPE_MONITOR;
2918                 break;
2919         default:
2920                 WARN_ON(1);
2921                 break;
2922         }
2923
2924         /* Some firmware revisions don't wait for beacon tx completion before
2925          * sending another SWBA event. This could lead to hardware using old
2926          * (freed) beacon data in some cases, e.g. tx credit starvation
2927          * combined with missed TBTT. This is very very rare.
2928          *
2929          * On non-IOMMU-enabled hosts this could be a possible security issue
2930          * because hw could beacon some random data on the air.  On
2931          * IOMMU-enabled hosts DMAR faults would occur in most cases and target
2932          * device would crash.
2933          *
2934          * Since there are no beacon tx completions (implicit nor explicit)
2935          * propagated to host the only workaround for this is to allocate a
2936          * DMA-coherent buffer for a lifetime of a vif and use it for all
2937          * beacon tx commands. Worst case for this approach is some beacons may
2938          * become corrupted, e.g. have garbled IEs or out-of-date TIM bitmap.
2939          */
2940         if (vif->type == NL80211_IFTYPE_ADHOC ||
2941             vif->type == NL80211_IFTYPE_AP) {
2942                 arvif->beacon_buf = dma_zalloc_coherent(ar->dev,
2943                                                         IEEE80211_MAX_FRAME_LEN,
2944                                                         &arvif->beacon_paddr,
2945                                                         GFP_ATOMIC);
2946                 if (!arvif->beacon_buf) {
2947                         ret = -ENOMEM;
2948                         ath10k_warn(ar, "failed to allocate beacon buffer: %d\n",
2949                                     ret);
2950                         goto err;
2951                 }
2952         }
2953
2954         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev create %d (add interface) type %d subtype %d bcnmode %s\n",
2955                    arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype,
2956                    arvif->beacon_buf ? "single-buf" : "per-skb");
2957
2958         ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type,
2959                                      arvif->vdev_subtype, vif->addr);
2960         if (ret) {
2961                 ath10k_warn(ar, "failed to create WMI vdev %i: %d\n",
2962                             arvif->vdev_id, ret);
2963                 goto err;
2964         }
2965
2966         ar->free_vdev_map &= ~(1LL << arvif->vdev_id);
2967         list_add(&arvif->list, &ar->arvifs);
2968
2969         vdev_param = ar->wmi.vdev_param->def_keyid;
2970         ret = ath10k_wmi_vdev_set_param(ar, 0, vdev_param,
2971                                         arvif->def_wep_key_idx);
2972         if (ret) {
2973                 ath10k_warn(ar, "failed to set vdev %i default key id: %d\n",
2974                             arvif->vdev_id, ret);
2975                 goto err_vdev_delete;
2976         }
2977
2978         vdev_param = ar->wmi.vdev_param->tx_encap_type;
2979         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2980                                         ATH10K_HW_TXRX_NATIVE_WIFI);
2981         /* 10.X firmware does not support this VDEV parameter. Do not warn */
2982         if (ret && ret != -EOPNOTSUPP) {
2983                 ath10k_warn(ar, "failed to set vdev %i TX encapsulation: %d\n",
2984                             arvif->vdev_id, ret);
2985                 goto err_vdev_delete;
2986         }
2987
2988         if (ar->cfg_tx_chainmask) {
2989                 u16 nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
2990
2991                 vdev_param = ar->wmi.vdev_param->nss;
2992                 ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
2993                                                 nss);
2994                 if (ret) {
2995                         ath10k_warn(ar, "failed to set vdev %i chainmask 0x%x, nss %i: %d\n",
2996                                     arvif->vdev_id, ar->cfg_tx_chainmask, nss,
2997                                     ret);
2998                         goto err_vdev_delete;
2999                 }
3000         }
3001
3002         if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3003                 ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr);
3004                 if (ret) {
3005                         ath10k_warn(ar, "failed to create vdev %i peer for AP: %d\n",
3006                                     arvif->vdev_id, ret);
3007                         goto err_vdev_delete;
3008                 }
3009
3010                 ret = ath10k_mac_set_kickout(arvif);
3011                 if (ret) {
3012                         ath10k_warn(ar, "failed to set vdev %i kickout parameters: %d\n",
3013                                     arvif->vdev_id, ret);
3014                         goto err_peer_delete;
3015                 }
3016         }
3017
3018         if (arvif->vdev_type == WMI_VDEV_TYPE_STA) {
3019                 param = WMI_STA_PS_PARAM_RX_WAKE_POLICY;
3020                 value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
3021                 ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3022                                                   param, value);
3023                 if (ret) {
3024                         ath10k_warn(ar, "failed to set vdev %i RX wake policy: %d\n",
3025                                     arvif->vdev_id, ret);
3026                         goto err_peer_delete;
3027                 }
3028
3029                 param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD;
3030                 value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS;
3031                 ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3032                                                   param, value);
3033                 if (ret) {
3034                         ath10k_warn(ar, "failed to set vdev %i TX wake thresh: %d\n",
3035                                     arvif->vdev_id, ret);
3036                         goto err_peer_delete;
3037                 }
3038
3039                 param = WMI_STA_PS_PARAM_PSPOLL_COUNT;
3040                 value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX;
3041                 ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3042                                                   param, value);
3043                 if (ret) {
3044                         ath10k_warn(ar, "failed to set vdev %i PSPOLL count: %d\n",
3045                                     arvif->vdev_id, ret);
3046                         goto err_peer_delete;
3047                 }
3048         }
3049
3050         ret = ath10k_mac_set_rts(arvif, ar->hw->wiphy->rts_threshold);
3051         if (ret) {
3052                 ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3053                             arvif->vdev_id, ret);
3054                 goto err_peer_delete;
3055         }
3056
3057         ret = ath10k_mac_set_frag(arvif, ar->hw->wiphy->frag_threshold);
3058         if (ret) {
3059                 ath10k_warn(ar, "failed to set frag threshold for vdev %d: %d\n",
3060                             arvif->vdev_id, ret);
3061                 goto err_peer_delete;
3062         }
3063
3064         arvif->txpower = vif->bss_conf.txpower;
3065         ret = ath10k_mac_txpower_recalc(ar);
3066         if (ret) {
3067                 ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
3068                 goto err_peer_delete;
3069         }
3070
3071         mutex_unlock(&ar->conf_mutex);
3072         return 0;
3073
3074 err_peer_delete:
3075         if (arvif->vdev_type == WMI_VDEV_TYPE_AP)
3076                 ath10k_wmi_peer_delete(ar, arvif->vdev_id, vif->addr);
3077
3078 err_vdev_delete:
3079         ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
3080         ar->free_vdev_map |= 1LL << arvif->vdev_id;
3081         list_del(&arvif->list);
3082
3083 err:
3084         if (arvif->beacon_buf) {
3085                 dma_free_coherent(ar->dev, IEEE80211_MAX_FRAME_LEN,
3086                                   arvif->beacon_buf, arvif->beacon_paddr);
3087                 arvif->beacon_buf = NULL;
3088         }
3089
3090         mutex_unlock(&ar->conf_mutex);
3091
3092         return ret;
3093 }
3094
3095 static void ath10k_remove_interface(struct ieee80211_hw *hw,
3096                                     struct ieee80211_vif *vif)
3097 {
3098         struct ath10k *ar = hw->priv;
3099         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3100         int ret;
3101
3102         cancel_work_sync(&arvif->wep_key_work);
3103
3104         mutex_lock(&ar->conf_mutex);
3105
3106         spin_lock_bh(&ar->data_lock);
3107         ath10k_mac_vif_beacon_cleanup(arvif);
3108         spin_unlock_bh(&ar->data_lock);
3109
3110         ret = ath10k_spectral_vif_stop(arvif);
3111         if (ret)
3112                 ath10k_warn(ar, "failed to stop spectral for vdev %i: %d\n",
3113                             arvif->vdev_id, ret);
3114
3115         ar->free_vdev_map |= 1LL << arvif->vdev_id;
3116         list_del(&arvif->list);
3117
3118         if (arvif->vdev_type == WMI_VDEV_TYPE_AP) {
3119                 ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr);
3120                 if (ret)
3121                         ath10k_warn(ar, "failed to remove peer for AP vdev %i: %d\n",
3122                                     arvif->vdev_id, ret);
3123
3124                 kfree(arvif->u.ap.noa_data);
3125         }
3126
3127         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %i delete (remove interface)\n",
3128                    arvif->vdev_id);
3129
3130         ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id);
3131         if (ret)
3132                 ath10k_warn(ar, "failed to delete WMI vdev %i: %d\n",
3133                             arvif->vdev_id, ret);
3134
3135         ath10k_peer_cleanup(ar, arvif->vdev_id);
3136
3137         mutex_unlock(&ar->conf_mutex);
3138 }
3139
3140 /*
3141  * FIXME: Has to be verified.
3142  */
3143 #define SUPPORTED_FILTERS                       \
3144         (FIF_PROMISC_IN_BSS |                   \
3145         FIF_ALLMULTI |                          \
3146         FIF_CONTROL |                           \
3147         FIF_PSPOLL |                            \
3148         FIF_OTHER_BSS |                         \
3149         FIF_BCN_PRBRESP_PROMISC |               \
3150         FIF_PROBE_REQ |                         \
3151         FIF_FCSFAIL)
3152
3153 static void ath10k_configure_filter(struct ieee80211_hw *hw,
3154                                     unsigned int changed_flags,
3155                                     unsigned int *total_flags,
3156                                     u64 multicast)
3157 {
3158         struct ath10k *ar = hw->priv;
3159         int ret;
3160
3161         mutex_lock(&ar->conf_mutex);
3162
3163         changed_flags &= SUPPORTED_FILTERS;
3164         *total_flags &= SUPPORTED_FILTERS;
3165         ar->filter_flags = *total_flags;
3166
3167         ret = ath10k_monitor_recalc(ar);
3168         if (ret)
3169                 ath10k_warn(ar, "failed to recalc montior: %d\n", ret);
3170
3171         mutex_unlock(&ar->conf_mutex);
3172 }
3173
3174 static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
3175                                     struct ieee80211_vif *vif,
3176                                     struct ieee80211_bss_conf *info,
3177                                     u32 changed)
3178 {
3179         struct ath10k *ar = hw->priv;
3180         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3181         int ret = 0;
3182         u32 vdev_param, pdev_param, slottime, preamble;
3183
3184         mutex_lock(&ar->conf_mutex);
3185
3186         if (changed & BSS_CHANGED_IBSS)
3187                 ath10k_control_ibss(arvif, info, vif->addr);
3188
3189         if (changed & BSS_CHANGED_BEACON_INT) {
3190                 arvif->beacon_interval = info->beacon_int;
3191                 vdev_param = ar->wmi.vdev_param->beacon_interval;
3192                 ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3193                                                 arvif->beacon_interval);
3194                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3195                            "mac vdev %d beacon_interval %d\n",
3196                            arvif->vdev_id, arvif->beacon_interval);
3197
3198                 if (ret)
3199                         ath10k_warn(ar, "failed to set beacon interval for vdev %d: %i\n",
3200                                     arvif->vdev_id, ret);
3201         }
3202
3203         if (changed & BSS_CHANGED_BEACON) {
3204                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3205                            "vdev %d set beacon tx mode to staggered\n",
3206                            arvif->vdev_id);
3207
3208                 pdev_param = ar->wmi.pdev_param->beacon_tx_mode;
3209                 ret = ath10k_wmi_pdev_set_param(ar, pdev_param,
3210                                                 WMI_BEACON_STAGGERED_MODE);
3211                 if (ret)
3212                         ath10k_warn(ar, "failed to set beacon mode for vdev %d: %i\n",
3213                                     arvif->vdev_id, ret);
3214         }
3215
3216         if (changed & BSS_CHANGED_BEACON_INFO) {
3217                 arvif->dtim_period = info->dtim_period;
3218
3219                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3220                            "mac vdev %d dtim_period %d\n",
3221                            arvif->vdev_id, arvif->dtim_period);
3222
3223                 vdev_param = ar->wmi.vdev_param->dtim_period;
3224                 ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3225                                                 arvif->dtim_period);
3226                 if (ret)
3227                         ath10k_warn(ar, "failed to set dtim period for vdev %d: %i\n",
3228                                     arvif->vdev_id, ret);
3229         }
3230
3231         if (changed & BSS_CHANGED_SSID &&
3232             vif->type == NL80211_IFTYPE_AP) {
3233                 arvif->u.ap.ssid_len = info->ssid_len;
3234                 if (info->ssid_len)
3235                         memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len);
3236                 arvif->u.ap.hidden_ssid = info->hidden_ssid;
3237         }
3238
3239         if (changed & BSS_CHANGED_BSSID && !is_zero_ether_addr(info->bssid))
3240                 ether_addr_copy(arvif->bssid, info->bssid);
3241
3242         if (changed & BSS_CHANGED_BEACON_ENABLED)
3243                 ath10k_control_beaconing(arvif, info);
3244
3245         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3246                 arvif->use_cts_prot = info->use_cts_prot;
3247                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
3248                            arvif->vdev_id, info->use_cts_prot);
3249
3250                 ret = ath10k_recalc_rtscts_prot(arvif);
3251                 if (ret)
3252                         ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
3253                                     arvif->vdev_id, ret);
3254         }
3255
3256         if (changed & BSS_CHANGED_ERP_SLOT) {
3257                 if (info->use_short_slot)
3258                         slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */
3259
3260                 else
3261                         slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */
3262
3263                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d slot_time %d\n",
3264                            arvif->vdev_id, slottime);
3265
3266                 vdev_param = ar->wmi.vdev_param->slot_time;
3267                 ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3268                                                 slottime);
3269                 if (ret)
3270                         ath10k_warn(ar, "failed to set erp slot for vdev %d: %i\n",
3271                                     arvif->vdev_id, ret);
3272         }
3273
3274         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3275                 if (info->use_short_preamble)
3276                         preamble = WMI_VDEV_PREAMBLE_SHORT;
3277                 else
3278                         preamble = WMI_VDEV_PREAMBLE_LONG;
3279
3280                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3281                            "mac vdev %d preamble %dn",
3282                            arvif->vdev_id, preamble);
3283
3284                 vdev_param = ar->wmi.vdev_param->preamble;
3285                 ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3286                                                 preamble);
3287                 if (ret)
3288                         ath10k_warn(ar, "failed to set preamble for vdev %d: %i\n",
3289                                     arvif->vdev_id, ret);
3290         }
3291
3292         if (changed & BSS_CHANGED_ASSOC) {
3293                 if (info->assoc) {
3294                         /* Workaround: Make sure monitor vdev is not running
3295                          * when associating to prevent some firmware revisions
3296                          * (e.g. 10.1 and 10.2) from crashing.
3297                          */
3298                         if (ar->monitor_started)
3299                                 ath10k_monitor_stop(ar);
3300                         ath10k_bss_assoc(hw, vif, info);
3301                         ath10k_monitor_recalc(ar);
3302                 } else {
3303                         ath10k_bss_disassoc(hw, vif);
3304                 }
3305         }
3306
3307         if (changed & BSS_CHANGED_TXPOWER) {
3308                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev_id %i txpower %d\n",
3309                            arvif->vdev_id, info->txpower);
3310
3311                 arvif->txpower = info->txpower;
3312                 ret = ath10k_mac_txpower_recalc(ar);
3313                 if (ret)
3314                         ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
3315         }
3316
3317         mutex_unlock(&ar->conf_mutex);
3318 }
3319
3320 static int ath10k_hw_scan(struct ieee80211_hw *hw,
3321                           struct ieee80211_vif *vif,
3322                           struct ieee80211_scan_request *hw_req)
3323 {
3324         struct ath10k *ar = hw->priv;
3325         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3326         struct cfg80211_scan_request *req = &hw_req->req;
3327         struct wmi_start_scan_arg arg;
3328         int ret = 0;
3329         int i;
3330
3331         mutex_lock(&ar->conf_mutex);
3332
3333         spin_lock_bh(&ar->data_lock);
3334         switch (ar->scan.state) {
3335         case ATH10K_SCAN_IDLE:
3336                 reinit_completion(&ar->scan.started);
3337                 reinit_completion(&ar->scan.completed);
3338                 ar->scan.state = ATH10K_SCAN_STARTING;
3339                 ar->scan.is_roc = false;
3340                 ar->scan.vdev_id = arvif->vdev_id;
3341                 ret = 0;
3342                 break;
3343         case ATH10K_SCAN_STARTING:
3344         case ATH10K_SCAN_RUNNING:
3345         case ATH10K_SCAN_ABORTING:
3346                 ret = -EBUSY;
3347                 break;
3348         }
3349         spin_unlock_bh(&ar->data_lock);
3350
3351         if (ret)
3352                 goto exit;
3353
3354         memset(&arg, 0, sizeof(arg));
3355         ath10k_wmi_start_scan_init(ar, &arg);
3356         arg.vdev_id = arvif->vdev_id;
3357         arg.scan_id = ATH10K_SCAN_ID;
3358
3359         if (!req->no_cck)
3360                 arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES;
3361
3362         if (req->ie_len) {
3363                 arg.ie_len = req->ie_len;
3364                 memcpy(arg.ie, req->ie, arg.ie_len);
3365         }
3366
3367         if (req->n_ssids) {
3368                 arg.n_ssids = req->n_ssids;
3369                 for (i = 0; i < arg.n_ssids; i++) {
3370                         arg.ssids[i].len  = req->ssids[i].ssid_len;
3371                         arg.ssids[i].ssid = req->ssids[i].ssid;
3372                 }
3373         } else {
3374                 arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3375         }
3376
3377         if (req->n_channels) {
3378                 arg.n_channels = req->n_channels;
3379                 for (i = 0; i < arg.n_channels; i++)
3380                         arg.channels[i] = req->channels[i]->center_freq;
3381         }
3382
3383         ret = ath10k_start_scan(ar, &arg);
3384         if (ret) {
3385                 ath10k_warn(ar, "failed to start hw scan: %d\n", ret);
3386                 spin_lock_bh(&ar->data_lock);
3387                 ar->scan.state = ATH10K_SCAN_IDLE;
3388                 spin_unlock_bh(&ar->data_lock);
3389         }
3390
3391 exit:
3392         mutex_unlock(&ar->conf_mutex);
3393         return ret;
3394 }
3395
3396 static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw,
3397                                   struct ieee80211_vif *vif)
3398 {
3399         struct ath10k *ar = hw->priv;
3400
3401         mutex_lock(&ar->conf_mutex);
3402         ath10k_scan_abort(ar);
3403         mutex_unlock(&ar->conf_mutex);
3404
3405         cancel_delayed_work_sync(&ar->scan.timeout);
3406 }
3407
3408 static void ath10k_set_key_h_def_keyidx(struct ath10k *ar,
3409                                         struct ath10k_vif *arvif,
3410                                         enum set_key_cmd cmd,
3411                                         struct ieee80211_key_conf *key)
3412 {
3413         u32 vdev_param = arvif->ar->wmi.vdev_param->def_keyid;
3414         int ret;
3415
3416         /* 10.1 firmware branch requires default key index to be set to group
3417          * key index after installing it. Otherwise FW/HW Txes corrupted
3418          * frames with multi-vif APs. This is not required for main firmware
3419          * branch (e.g. 636).
3420          *
3421          * FIXME: This has been tested only in AP. It remains unknown if this
3422          * is required for multi-vif STA interfaces on 10.1 */
3423
3424         if (arvif->vdev_type != WMI_VDEV_TYPE_AP)
3425                 return;
3426
3427         if (key->cipher == WLAN_CIPHER_SUITE_WEP40)
3428                 return;
3429
3430         if (key->cipher == WLAN_CIPHER_SUITE_WEP104)
3431                 return;
3432
3433         if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
3434                 return;
3435
3436         if (cmd != SET_KEY)
3437                 return;
3438
3439         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
3440                                         key->keyidx);
3441         if (ret)
3442                 ath10k_warn(ar, "failed to set vdev %i group key as default key: %d\n",
3443                             arvif->vdev_id, ret);
3444 }
3445
3446 static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3447                           struct ieee80211_vif *vif, struct ieee80211_sta *sta,
3448                           struct ieee80211_key_conf *key)
3449 {
3450         struct ath10k *ar = hw->priv;
3451         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3452         struct ath10k_peer *peer;
3453         const u8 *peer_addr;
3454         bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
3455                       key->cipher == WLAN_CIPHER_SUITE_WEP104;
3456         int ret = 0;
3457
3458         if (key->keyidx > WMI_MAX_KEY_INDEX)
3459                 return -ENOSPC;
3460
3461         mutex_lock(&ar->conf_mutex);
3462
3463         if (sta)
3464                 peer_addr = sta->addr;
3465         else if (arvif->vdev_type == WMI_VDEV_TYPE_STA)
3466                 peer_addr = vif->bss_conf.bssid;
3467         else
3468                 peer_addr = vif->addr;
3469
3470         key->hw_key_idx = key->keyidx;
3471
3472         /* the peer should not disappear in mid-way (unless FW goes awry) since
3473          * we already hold conf_mutex. we just make sure its there now. */
3474         spin_lock_bh(&ar->data_lock);
3475         peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
3476         spin_unlock_bh(&ar->data_lock);
3477
3478         if (!peer) {
3479                 if (cmd == SET_KEY) {
3480                         ath10k_warn(ar, "failed to install key for non-existent peer %pM\n",
3481                                     peer_addr);
3482                         ret = -EOPNOTSUPP;
3483                         goto exit;
3484                 } else {
3485                         /* if the peer doesn't exist there is no key to disable
3486                          * anymore */
3487                         goto exit;
3488                 }
3489         }
3490
3491         if (is_wep) {
3492                 if (cmd == SET_KEY)
3493                         arvif->wep_keys[key->keyidx] = key;
3494                 else
3495                         arvif->wep_keys[key->keyidx] = NULL;
3496
3497                 if (cmd == DISABLE_KEY)
3498                         ath10k_clear_vdev_key(arvif, key);
3499         }
3500
3501         ret = ath10k_install_key(arvif, key, cmd, peer_addr);
3502         if (ret) {
3503                 ath10k_warn(ar, "failed to install key for vdev %i peer %pM: %d\n",
3504                             arvif->vdev_id, peer_addr, ret);
3505                 goto exit;
3506         }
3507
3508         ath10k_set_key_h_def_keyidx(ar, arvif, cmd, key);
3509
3510         spin_lock_bh(&ar->data_lock);
3511         peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr);
3512         if (peer && cmd == SET_KEY)
3513                 peer->keys[key->keyidx] = key;
3514         else if (peer && cmd == DISABLE_KEY)
3515                 peer->keys[key->keyidx] = NULL;
3516         else if (peer == NULL)
3517                 /* impossible unless FW goes crazy */
3518                 ath10k_warn(ar, "Peer %pM disappeared!\n", peer_addr);
3519         spin_unlock_bh(&ar->data_lock);
3520
3521 exit:
3522         mutex_unlock(&ar->conf_mutex);
3523         return ret;
3524 }
3525
3526 static void ath10k_sta_rc_update_wk(struct work_struct *wk)
3527 {
3528         struct ath10k *ar;
3529         struct ath10k_vif *arvif;
3530         struct ath10k_sta *arsta;
3531         struct ieee80211_sta *sta;
3532         u32 changed, bw, nss, smps;
3533         int err;
3534
3535         arsta = container_of(wk, struct ath10k_sta, update_wk);
3536         sta = container_of((void *)arsta, struct ieee80211_sta, drv_priv);
3537         arvif = arsta->arvif;
3538         ar = arvif->ar;
3539
3540         spin_lock_bh(&ar->data_lock);
3541
3542         changed = arsta->changed;
3543         arsta->changed = 0;
3544
3545         bw = arsta->bw;
3546         nss = arsta->nss;
3547         smps = arsta->smps;
3548
3549         spin_unlock_bh(&ar->data_lock);
3550
3551         mutex_lock(&ar->conf_mutex);
3552
3553         if (changed & IEEE80211_RC_BW_CHANGED) {
3554                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM peer bw %d\n",
3555                            sta->addr, bw);
3556
3557                 err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
3558                                                 WMI_PEER_CHAN_WIDTH, bw);
3559                 if (err)
3560                         ath10k_warn(ar, "failed to update STA %pM peer bw %d: %d\n",
3561                                     sta->addr, bw, err);
3562         }
3563
3564         if (changed & IEEE80211_RC_NSS_CHANGED) {
3565                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM nss %d\n",
3566                            sta->addr, nss);
3567
3568                 err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
3569                                                 WMI_PEER_NSS, nss);
3570                 if (err)
3571                         ath10k_warn(ar, "failed to update STA %pM nss %d: %d\n",
3572                                     sta->addr, nss, err);
3573         }
3574
3575         if (changed & IEEE80211_RC_SMPS_CHANGED) {
3576                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM smps %d\n",
3577                            sta->addr, smps);
3578
3579                 err = ath10k_wmi_peer_set_param(ar, arvif->vdev_id, sta->addr,
3580                                                 WMI_PEER_SMPS_STATE, smps);
3581                 if (err)
3582                         ath10k_warn(ar, "failed to update STA %pM smps %d: %d\n",
3583                                     sta->addr, smps, err);
3584         }
3585
3586         if (changed & IEEE80211_RC_SUPP_RATES_CHANGED) {
3587                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac update sta %pM supp rates\n",
3588                            sta->addr);
3589
3590                 err = ath10k_station_assoc(ar, arvif->vif, sta, true);
3591                 if (err)
3592                         ath10k_warn(ar, "failed to reassociate station: %pM\n",
3593                                     sta->addr);
3594         }
3595
3596         mutex_unlock(&ar->conf_mutex);
3597 }
3598
3599 static int ath10k_mac_inc_num_stations(struct ath10k_vif *arvif)
3600 {
3601         struct ath10k *ar = arvif->ar;
3602
3603         lockdep_assert_held(&ar->conf_mutex);
3604
3605         if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
3606             arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
3607                 return 0;
3608
3609         if (ar->num_stations >= ar->max_num_stations)
3610                 return -ENOBUFS;
3611
3612         ar->num_stations++;
3613
3614         return 0;
3615 }
3616
3617 static void ath10k_mac_dec_num_stations(struct ath10k_vif *arvif)
3618 {
3619         struct ath10k *ar = arvif->ar;
3620
3621         lockdep_assert_held(&ar->conf_mutex);
3622
3623         if (arvif->vdev_type != WMI_VDEV_TYPE_AP &&
3624             arvif->vdev_type != WMI_VDEV_TYPE_IBSS)
3625                 return;
3626
3627         ar->num_stations--;
3628 }
3629
3630 static int ath10k_sta_state(struct ieee80211_hw *hw,
3631                             struct ieee80211_vif *vif,
3632                             struct ieee80211_sta *sta,
3633                             enum ieee80211_sta_state old_state,
3634                             enum ieee80211_sta_state new_state)
3635 {
3636         struct ath10k *ar = hw->priv;
3637         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3638         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3639         int ret = 0;
3640
3641         if (old_state == IEEE80211_STA_NOTEXIST &&
3642             new_state == IEEE80211_STA_NONE) {
3643                 memset(arsta, 0, sizeof(*arsta));
3644                 arsta->arvif = arvif;
3645                 INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
3646         }
3647
3648         /* cancel must be done outside the mutex to avoid deadlock */
3649         if ((old_state == IEEE80211_STA_NONE &&
3650              new_state == IEEE80211_STA_NOTEXIST))
3651                 cancel_work_sync(&arsta->update_wk);
3652
3653         mutex_lock(&ar->conf_mutex);
3654
3655         if (old_state == IEEE80211_STA_NOTEXIST &&
3656             new_state == IEEE80211_STA_NONE) {
3657                 /*
3658                  * New station addition.
3659                  */
3660                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3661                            "mac vdev %d peer create %pM (new sta) sta %d / %d peer %d / %d\n",
3662                            arvif->vdev_id, sta->addr,
3663                            ar->num_stations + 1, ar->max_num_stations,
3664                            ar->num_peers + 1, ar->max_num_peers);
3665
3666                 ret = ath10k_mac_inc_num_stations(arvif);
3667                 if (ret) {
3668                         ath10k_warn(ar, "refusing to associate station: too many connected already (%d)\n",
3669                                     ar->max_num_stations);
3670                         goto exit;
3671                 }
3672
3673                 ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
3674                 if (ret) {
3675                         ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
3676                                     sta->addr, arvif->vdev_id, ret);
3677                         ath10k_mac_dec_num_stations(arvif);
3678                         goto exit;
3679                 }
3680
3681                 if (vif->type == NL80211_IFTYPE_STATION) {
3682                         WARN_ON(arvif->is_started);
3683
3684                         ret = ath10k_vdev_start(arvif);
3685                         if (ret) {
3686                                 ath10k_warn(ar, "failed to start vdev %i: %d\n",
3687                                             arvif->vdev_id, ret);
3688                                 WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
3689                                                            sta->addr));
3690                                 ath10k_mac_dec_num_stations(arvif);
3691                                 goto exit;
3692                         }
3693
3694                         arvif->is_started = true;
3695                 }
3696         } else if ((old_state == IEEE80211_STA_NONE &&
3697                     new_state == IEEE80211_STA_NOTEXIST)) {
3698                 /*
3699                  * Existing station deletion.
3700                  */
3701                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3702                            "mac vdev %d peer delete %pM (sta gone)\n",
3703                            arvif->vdev_id, sta->addr);
3704
3705                 if (vif->type == NL80211_IFTYPE_STATION) {
3706                         WARN_ON(!arvif->is_started);
3707
3708                         ret = ath10k_vdev_stop(arvif);
3709                         if (ret)
3710                                 ath10k_warn(ar, "failed to stop vdev %i: %d\n",
3711                                             arvif->vdev_id, ret);
3712
3713                         arvif->is_started = false;
3714                 }
3715
3716                 ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
3717                 if (ret)
3718                         ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
3719                                     sta->addr, arvif->vdev_id, ret);
3720
3721                 ath10k_mac_dec_num_stations(arvif);
3722         } else if (old_state == IEEE80211_STA_AUTH &&
3723                    new_state == IEEE80211_STA_ASSOC &&
3724                    (vif->type == NL80211_IFTYPE_AP ||
3725                     vif->type == NL80211_IFTYPE_ADHOC)) {
3726                 /*
3727                  * New association.
3728                  */
3729                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
3730                            sta->addr);
3731
3732                 ret = ath10k_station_assoc(ar, vif, sta, false);
3733                 if (ret)
3734                         ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
3735                                     sta->addr, arvif->vdev_id, ret);
3736         } else if (old_state == IEEE80211_STA_ASSOC &&
3737                    new_state == IEEE80211_STA_AUTH &&
3738                    (vif->type == NL80211_IFTYPE_AP ||
3739                     vif->type == NL80211_IFTYPE_ADHOC)) {
3740                 /*
3741                  * Disassociation.
3742                  */
3743                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
3744                            sta->addr);
3745
3746                 ret = ath10k_station_disassoc(ar, vif, sta);
3747                 if (ret)
3748                         ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
3749                                     sta->addr, arvif->vdev_id, ret);
3750         }
3751 exit:
3752         mutex_unlock(&ar->conf_mutex);
3753         return ret;
3754 }
3755
3756 static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
3757                                 u16 ac, bool enable)
3758 {
3759         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3760         u32 value = 0;
3761         int ret = 0;
3762
3763         lockdep_assert_held(&ar->conf_mutex);
3764
3765         if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
3766                 return 0;
3767
3768         switch (ac) {
3769         case IEEE80211_AC_VO:
3770                 value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
3771                         WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
3772                 break;
3773         case IEEE80211_AC_VI:
3774                 value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
3775                         WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
3776                 break;
3777         case IEEE80211_AC_BE:
3778                 value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
3779                         WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
3780                 break;
3781         case IEEE80211_AC_BK:
3782                 value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
3783                         WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
3784                 break;
3785         }
3786
3787         if (enable)
3788                 arvif->u.sta.uapsd |= value;
3789         else
3790                 arvif->u.sta.uapsd &= ~value;
3791
3792         ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3793                                           WMI_STA_PS_PARAM_UAPSD,
3794                                           arvif->u.sta.uapsd);
3795         if (ret) {
3796                 ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
3797                 goto exit;
3798         }
3799
3800         if (arvif->u.sta.uapsd)
3801                 value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
3802         else
3803                 value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
3804
3805         ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3806                                           WMI_STA_PS_PARAM_RX_WAKE_POLICY,
3807                                           value);
3808         if (ret)
3809                 ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
3810
3811 exit:
3812         return ret;
3813 }
3814
3815 static int ath10k_conf_tx(struct ieee80211_hw *hw,
3816                           struct ieee80211_vif *vif, u16 ac,
3817                           const struct ieee80211_tx_queue_params *params)
3818 {
3819         struct ath10k *ar = hw->priv;
3820         struct wmi_wmm_params_arg *p = NULL;
3821         int ret;
3822
3823         mutex_lock(&ar->conf_mutex);
3824
3825         switch (ac) {
3826         case IEEE80211_AC_VO:
3827                 p = &ar->wmm_params.ac_vo;
3828                 break;
3829         case IEEE80211_AC_VI:
3830                 p = &ar->wmm_params.ac_vi;
3831                 break;
3832         case IEEE80211_AC_BE:
3833                 p = &ar->wmm_params.ac_be;
3834                 break;
3835         case IEEE80211_AC_BK:
3836                 p = &ar->wmm_params.ac_bk;
3837                 break;
3838         }
3839
3840         if (WARN_ON(!p)) {
3841                 ret = -EINVAL;
3842                 goto exit;
3843         }
3844
3845         p->cwmin = params->cw_min;
3846         p->cwmax = params->cw_max;
3847         p->aifs = params->aifs;
3848
3849         /*
3850          * The channel time duration programmed in the HW is in absolute
3851          * microseconds, while mac80211 gives the txop in units of
3852          * 32 microseconds.
3853          */
3854         p->txop = params->txop * 32;
3855
3856         /* FIXME: FW accepts wmm params per hw, not per vif */
3857         ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
3858         if (ret) {
3859                 ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
3860                 goto exit;
3861         }
3862
3863         ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
3864         if (ret)
3865                 ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
3866
3867 exit:
3868         mutex_unlock(&ar->conf_mutex);
3869         return ret;
3870 }
3871
3872 #define ATH10K_ROC_TIMEOUT_HZ (2*HZ)
3873
3874 static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
3875                                     struct ieee80211_vif *vif,
3876                                     struct ieee80211_channel *chan,
3877                                     int duration,
3878                                     enum ieee80211_roc_type type)
3879 {
3880         struct ath10k *ar = hw->priv;
3881         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3882         struct wmi_start_scan_arg arg;
3883         int ret = 0;
3884
3885         mutex_lock(&ar->conf_mutex);
3886
3887         spin_lock_bh(&ar->data_lock);
3888         switch (ar->scan.state) {
3889         case ATH10K_SCAN_IDLE:
3890                 reinit_completion(&ar->scan.started);
3891                 reinit_completion(&ar->scan.completed);
3892                 reinit_completion(&ar->scan.on_channel);
3893                 ar->scan.state = ATH10K_SCAN_STARTING;
3894                 ar->scan.is_roc = true;
3895                 ar->scan.vdev_id = arvif->vdev_id;
3896                 ar->scan.roc_freq = chan->center_freq;
3897                 ret = 0;
3898                 break;
3899         case ATH10K_SCAN_STARTING:
3900         case ATH10K_SCAN_RUNNING:
3901         case ATH10K_SCAN_ABORTING:
3902                 ret = -EBUSY;
3903                 break;
3904         }
3905         spin_unlock_bh(&ar->data_lock);
3906
3907         if (ret)
3908                 goto exit;
3909
3910         duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);
3911
3912         memset(&arg, 0, sizeof(arg));
3913         ath10k_wmi_start_scan_init(ar, &arg);
3914         arg.vdev_id = arvif->vdev_id;
3915         arg.scan_id = ATH10K_SCAN_ID;
3916         arg.n_channels = 1;
3917         arg.channels[0] = chan->center_freq;
3918         arg.dwell_time_active = duration;
3919         arg.dwell_time_passive = duration;
3920         arg.max_scan_time = 2 * duration;
3921         arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3922         arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
3923
3924         ret = ath10k_start_scan(ar, &arg);
3925         if (ret) {
3926                 ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
3927                 spin_lock_bh(&ar->data_lock);
3928                 ar->scan.state = ATH10K_SCAN_IDLE;
3929                 spin_unlock_bh(&ar->data_lock);
3930                 goto exit;
3931         }
3932
3933         ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
3934         if (ret == 0) {
3935                 ath10k_warn(ar, "failed to switch to channel for roc scan\n");
3936
3937                 ret = ath10k_scan_stop(ar);
3938                 if (ret)
3939                         ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3940
3941                 ret = -ETIMEDOUT;
3942                 goto exit;
3943         }
3944
3945         ret = 0;
3946 exit:
3947         mutex_unlock(&ar->conf_mutex);
3948         return ret;
3949 }
3950
3951 static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
3952 {
3953         struct ath10k *ar = hw->priv;
3954
3955         mutex_lock(&ar->conf_mutex);
3956         ath10k_scan_abort(ar);
3957         mutex_unlock(&ar->conf_mutex);
3958
3959         cancel_delayed_work_sync(&ar->scan.timeout);
3960
3961         return 0;
3962 }
3963
3964 /*
3965  * Both RTS and Fragmentation threshold are interface-specific
3966  * in ath10k, but device-specific in mac80211.
3967  */
3968
3969 static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3970 {
3971         struct ath10k *ar = hw->priv;
3972         struct ath10k_vif *arvif;
3973         int ret = 0;
3974
3975         mutex_lock(&ar->conf_mutex);
3976         list_for_each_entry(arvif, &ar->arvifs, list) {
3977                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
3978                            arvif->vdev_id, value);
3979
3980                 ret = ath10k_mac_set_rts(arvif, value);
3981                 if (ret) {
3982                         ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3983                                     arvif->vdev_id, ret);
3984                         break;
3985                 }
3986         }
3987         mutex_unlock(&ar->conf_mutex);
3988
3989         return ret;
3990 }
3991
3992 static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3993 {
3994         struct ath10k *ar = hw->priv;
3995         struct ath10k_vif *arvif;
3996         int ret = 0;
3997
3998         mutex_lock(&ar->conf_mutex);
3999         list_for_each_entry(arvif, &ar->arvifs, list) {
4000                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d fragmentation threshold %d\n",
4001                            arvif->vdev_id, value);
4002
4003                 ret = ath10k_mac_set_frag(arvif, value);
4004                 if (ret) {
4005                         ath10k_warn(ar, "failed to set fragmentation threshold for vdev %d: %d\n",
4006                                     arvif->vdev_id, ret);
4007                         break;
4008                 }
4009         }
4010         mutex_unlock(&ar->conf_mutex);
4011
4012         return ret;
4013 }
4014
4015 static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
4016                          u32 queues, bool drop)
4017 {
4018         struct ath10k *ar = hw->priv;
4019         bool skip;
4020         int ret;
4021
4022         /* mac80211 doesn't care if we really xmit queued frames or not
4023          * we'll collect those frames either way if we stop/delete vdevs */
4024         if (drop)
4025                 return;
4026
4027         mutex_lock(&ar->conf_mutex);
4028
4029         if (ar->state == ATH10K_STATE_WEDGED)
4030                 goto skip;
4031
4032         ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
4033                         bool empty;
4034
4035                         spin_lock_bh(&ar->htt.tx_lock);
4036                         empty = (ar->htt.num_pending_tx == 0);
4037                         spin_unlock_bh(&ar->htt.tx_lock);
4038
4039                         skip = (ar->state == ATH10K_STATE_WEDGED) ||
4040                                test_bit(ATH10K_FLAG_CRASH_FLUSH,
4041                                         &ar->dev_flags);
4042
4043                         (empty || skip);
4044                 }), ATH10K_FLUSH_TIMEOUT_HZ);
4045
4046         if (ret <= 0 || skip)
4047                 ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
4048                             skip, ar->state, ret);
4049
4050 skip:
4051         mutex_unlock(&ar->conf_mutex);
4052 }
4053
4054 /* TODO: Implement this function properly
4055  * For now it is needed to reply to Probe Requests in IBSS mode.
4056  * Propably we need this information from FW.
4057  */
4058 static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
4059 {
4060         return 1;
4061 }
4062
4063 #ifdef CONFIG_PM
4064 static int ath10k_suspend(struct ieee80211_hw *hw,
4065                           struct cfg80211_wowlan *wowlan)
4066 {
4067         struct ath10k *ar = hw->priv;
4068         int ret;
4069
4070         mutex_lock(&ar->conf_mutex);
4071
4072         ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
4073         if (ret) {
4074                 if (ret == -ETIMEDOUT)
4075                         goto resume;
4076                 ret = 1;
4077                 goto exit;
4078         }
4079
4080         ret = ath10k_hif_suspend(ar);
4081         if (ret) {
4082                 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
4083                 goto resume;
4084         }
4085
4086         ret = 0;
4087         goto exit;
4088 resume:
4089         ret = ath10k_wmi_pdev_resume_target(ar);
4090         if (ret)
4091                 ath10k_warn(ar, "failed to resume target: %d\n", ret);
4092
4093         ret = 1;
4094 exit:
4095         mutex_unlock(&ar->conf_mutex);
4096         return ret;
4097 }
4098
4099 static int ath10k_resume(struct ieee80211_hw *hw)
4100 {
4101         struct ath10k *ar = hw->priv;
4102         int ret;
4103
4104         mutex_lock(&ar->conf_mutex);
4105
4106         ret = ath10k_hif_resume(ar);
4107         if (ret) {
4108                 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
4109                 ret = 1;
4110                 goto exit;
4111         }
4112
4113         ret = ath10k_wmi_pdev_resume_target(ar);
4114         if (ret) {
4115                 ath10k_warn(ar, "failed to resume target: %d\n", ret);
4116                 ret = 1;
4117                 goto exit;
4118         }
4119
4120         ret = 0;
4121 exit:
4122         mutex_unlock(&ar->conf_mutex);
4123         return ret;
4124 }
4125 #endif
4126
4127 static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
4128                                      enum ieee80211_reconfig_type reconfig_type)
4129 {
4130         struct ath10k *ar = hw->priv;
4131
4132         if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
4133                 return;
4134
4135         mutex_lock(&ar->conf_mutex);
4136
4137         /* If device failed to restart it will be in a different state, e.g.
4138          * ATH10K_STATE_WEDGED */
4139         if (ar->state == ATH10K_STATE_RESTARTED) {
4140                 ath10k_info(ar, "device successfully recovered\n");
4141                 ar->state = ATH10K_STATE_ON;
4142                 ieee80211_wake_queues(ar->hw);
4143         }
4144
4145         mutex_unlock(&ar->conf_mutex);
4146 }
4147
4148 static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
4149                              struct survey_info *survey)
4150 {
4151         struct ath10k *ar = hw->priv;
4152         struct ieee80211_supported_band *sband;
4153         struct survey_info *ar_survey = &ar->survey[idx];
4154         int ret = 0;
4155
4156         mutex_lock(&ar->conf_mutex);
4157
4158         sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
4159         if (sband && idx >= sband->n_channels) {
4160                 idx -= sband->n_channels;
4161                 sband = NULL;
4162         }
4163
4164         if (!sband)
4165                 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
4166
4167         if (!sband || idx >= sband->n_channels) {
4168                 ret = -ENOENT;
4169                 goto exit;
4170         }
4171
4172         spin_lock_bh(&ar->data_lock);
4173         memcpy(survey, ar_survey, sizeof(*survey));
4174         spin_unlock_bh(&ar->data_lock);
4175
4176         survey->channel = &sband->channels[idx];
4177
4178         if (ar->rx_channel == survey->channel)
4179                 survey->filled |= SURVEY_INFO_IN_USE;
4180
4181 exit:
4182         mutex_unlock(&ar->conf_mutex);
4183         return ret;
4184 }
4185
4186 /* Helper table for legacy fixed_rate/bitrate_mask */
4187 static const u8 cck_ofdm_rate[] = {
4188         /* CCK */
4189         3, /* 1Mbps */
4190         2, /* 2Mbps */
4191         1, /* 5.5Mbps */
4192         0, /* 11Mbps */
4193         /* OFDM */
4194         3, /* 6Mbps */
4195         7, /* 9Mbps */
4196         2, /* 12Mbps */
4197         6, /* 18Mbps */
4198         1, /* 24Mbps */
4199         5, /* 36Mbps */
4200         0, /* 48Mbps */
4201         4, /* 54Mbps */
4202 };
4203
4204 /* Check if only one bit set */
4205 static int ath10k_check_single_mask(u32 mask)
4206 {
4207         int bit;
4208
4209         bit = ffs(mask);
4210         if (!bit)
4211                 return 0;
4212
4213         mask &= ~BIT(bit - 1);
4214         if (mask)
4215                 return 2;
4216
4217         return 1;
4218 }
4219
4220 static bool
4221 ath10k_default_bitrate_mask(struct ath10k *ar,
4222                             enum ieee80211_band band,
4223                             const struct cfg80211_bitrate_mask *mask)
4224 {
4225         u32 legacy = 0x00ff;
4226         u8 ht = 0xff, i;
4227         u16 vht = 0x3ff;
4228         u16 nrf = ar->num_rf_chains;
4229
4230         if (ar->cfg_tx_chainmask)
4231                 nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4232
4233         switch (band) {
4234         case IEEE80211_BAND_2GHZ:
4235                 legacy = 0x00fff;
4236                 vht = 0;
4237                 break;
4238         case IEEE80211_BAND_5GHZ:
4239                 break;
4240         default:
4241                 return false;
4242         }
4243
4244         if (mask->control[band].legacy != legacy)
4245                 return false;
4246
4247         for (i = 0; i < nrf; i++)
4248                 if (mask->control[band].ht_mcs[i] != ht)
4249                         return false;
4250
4251         for (i = 0; i < nrf; i++)
4252                 if (mask->control[band].vht_mcs[i] != vht)
4253                         return false;
4254
4255         return true;
4256 }
4257
4258 static bool
4259 ath10k_bitrate_mask_nss(const struct cfg80211_bitrate_mask *mask,
4260                         enum ieee80211_band band,
4261                         u8 *fixed_nss)
4262 {
4263         int ht_nss = 0, vht_nss = 0, i;
4264
4265         /* check legacy */
4266         if (ath10k_check_single_mask(mask->control[band].legacy))
4267                 return false;
4268
4269         /* check HT */
4270         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4271                 if (mask->control[band].ht_mcs[i] == 0xff)
4272                         continue;
4273                 else if (mask->control[band].ht_mcs[i] == 0x00)
4274                         break;
4275
4276                 return false;
4277         }
4278
4279         ht_nss = i;
4280
4281         /* check VHT */
4282         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4283                 if (mask->control[band].vht_mcs[i] == 0x03ff)
4284                         continue;
4285                 else if (mask->control[band].vht_mcs[i] == 0x0000)
4286                         break;
4287
4288                 return false;
4289         }
4290
4291         vht_nss = i;
4292
4293         if (ht_nss > 0 && vht_nss > 0)
4294                 return false;
4295
4296         if (ht_nss)
4297                 *fixed_nss = ht_nss;
4298         else if (vht_nss)
4299                 *fixed_nss = vht_nss;
4300         else
4301                 return false;
4302
4303         return true;
4304 }
4305
4306 static bool
4307 ath10k_bitrate_mask_correct(const struct cfg80211_bitrate_mask *mask,
4308                             enum ieee80211_band band,
4309                             enum wmi_rate_preamble *preamble)
4310 {
4311         int legacy = 0, ht = 0, vht = 0, i;
4312
4313         *preamble = WMI_RATE_PREAMBLE_OFDM;
4314
4315         /* check legacy */
4316         legacy = ath10k_check_single_mask(mask->control[band].legacy);
4317         if (legacy > 1)
4318                 return false;
4319
4320         /* check HT */
4321         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4322                 ht += ath10k_check_single_mask(mask->control[band].ht_mcs[i]);
4323         if (ht > 1)
4324                 return false;
4325
4326         /* check VHT */
4327         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4328                 vht += ath10k_check_single_mask(mask->control[band].vht_mcs[i]);
4329         if (vht > 1)
4330                 return false;
4331
4332         /* Currently we support only one fixed_rate */
4333         if ((legacy + ht + vht) != 1)
4334                 return false;
4335
4336         if (ht)
4337                 *preamble = WMI_RATE_PREAMBLE_HT;
4338         else if (vht)
4339                 *preamble = WMI_RATE_PREAMBLE_VHT;
4340
4341         return true;
4342 }
4343
4344 static bool
4345 ath10k_bitrate_mask_rate(struct ath10k *ar,
4346                          const struct cfg80211_bitrate_mask *mask,
4347                          enum ieee80211_band band,
4348                          u8 *fixed_rate,
4349                          u8 *fixed_nss)
4350 {
4351         u8 rate = 0, pream = 0, nss = 0, i;
4352         enum wmi_rate_preamble preamble;
4353
4354         /* Check if single rate correct */
4355         if (!ath10k_bitrate_mask_correct(mask, band, &preamble))
4356                 return false;
4357
4358         pream = preamble;
4359
4360         switch (preamble) {
4361         case WMI_RATE_PREAMBLE_CCK:
4362         case WMI_RATE_PREAMBLE_OFDM:
4363                 i = ffs(mask->control[band].legacy) - 1;
4364
4365                 if (band == IEEE80211_BAND_2GHZ && i < 4)
4366                         pream = WMI_RATE_PREAMBLE_CCK;
4367
4368                 if (band == IEEE80211_BAND_5GHZ)
4369                         i += 4;
4370
4371                 if (i >= ARRAY_SIZE(cck_ofdm_rate))
4372                         return false;
4373
4374                 rate = cck_ofdm_rate[i];
4375                 break;
4376         case WMI_RATE_PREAMBLE_HT:
4377                 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4378                         if (mask->control[band].ht_mcs[i])
4379                                 break;
4380
4381                 if (i == IEEE80211_HT_MCS_MASK_LEN)
4382                         return false;
4383
4384                 rate = ffs(mask->control[band].ht_mcs[i]) - 1;
4385                 nss = i;
4386                 break;
4387         case WMI_RATE_PREAMBLE_VHT:
4388                 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4389                         if (mask->control[band].vht_mcs[i])
4390                                 break;
4391
4392                 if (i == NL80211_VHT_NSS_MAX)
4393                         return false;
4394
4395                 rate = ffs(mask->control[band].vht_mcs[i]) - 1;
4396                 nss = i;
4397                 break;
4398         }
4399
4400         *fixed_nss = nss + 1;
4401         nss <<= 4;
4402         pream <<= 6;
4403
4404         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
4405                    pream, nss, rate);
4406
4407         *fixed_rate = pream | nss | rate;
4408
4409         return true;
4410 }
4411
4412 static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
4413                                       const struct cfg80211_bitrate_mask *mask,
4414                                       enum ieee80211_band band,
4415                                       u8 *fixed_rate,
4416                                       u8 *fixed_nss)
4417 {
4418         /* First check full NSS mask, if we can simply limit NSS */
4419         if (ath10k_bitrate_mask_nss(mask, band, fixed_nss))
4420                 return true;
4421
4422         /* Next Check single rate is set */
4423         return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
4424 }
4425
4426 static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
4427                                        u8 fixed_rate,
4428                                        u8 fixed_nss,
4429                                        u8 force_sgi)
4430 {
4431         struct ath10k *ar = arvif->ar;
4432         u32 vdev_param;
4433         int ret = 0;
4434
4435         mutex_lock(&ar->conf_mutex);
4436
4437         if (arvif->fixed_rate == fixed_rate &&
4438             arvif->fixed_nss == fixed_nss &&
4439             arvif->force_sgi == force_sgi)
4440                 goto exit;
4441
4442         if (fixed_rate == WMI_FIXED_RATE_NONE)
4443                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
4444
4445         if (force_sgi)
4446                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
4447
4448         vdev_param = ar->wmi.vdev_param->fixed_rate;
4449         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
4450                                         vdev_param, fixed_rate);
4451         if (ret) {
4452                 ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
4453                             fixed_rate, ret);
4454                 ret = -EINVAL;
4455                 goto exit;
4456         }
4457
4458         arvif->fixed_rate = fixed_rate;
4459
4460         vdev_param = ar->wmi.vdev_param->nss;
4461         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
4462                                         vdev_param, fixed_nss);
4463
4464         if (ret) {
4465                 ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
4466                             fixed_nss, ret);
4467                 ret = -EINVAL;
4468                 goto exit;
4469         }
4470
4471         arvif->fixed_nss = fixed_nss;
4472
4473         vdev_param = ar->wmi.vdev_param->sgi;
4474         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4475                                         force_sgi);
4476
4477         if (ret) {
4478                 ath10k_warn(ar, "failed to set sgi param %d: %d\n",
4479                             force_sgi, ret);
4480                 ret = -EINVAL;
4481                 goto exit;
4482         }
4483
4484         arvif->force_sgi = force_sgi;
4485
4486 exit:
4487         mutex_unlock(&ar->conf_mutex);
4488         return ret;
4489 }
4490
4491 static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
4492                                    struct ieee80211_vif *vif,
4493                                    const struct cfg80211_bitrate_mask *mask)
4494 {
4495         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4496         struct ath10k *ar = arvif->ar;
4497         enum ieee80211_band band = ar->hw->conf.chandef.chan->band;
4498         u8 fixed_rate = WMI_FIXED_RATE_NONE;
4499         u8 fixed_nss = ar->num_rf_chains;
4500         u8 force_sgi;
4501
4502         if (ar->cfg_tx_chainmask)
4503                 fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4504
4505         force_sgi = mask->control[band].gi;
4506         if (force_sgi == NL80211_TXRATE_FORCE_LGI)
4507                 return -EINVAL;
4508
4509         if (!ath10k_default_bitrate_mask(ar, band, mask)) {
4510                 if (!ath10k_get_fixed_rate_nss(ar, mask, band,
4511                                                &fixed_rate,
4512                                                &fixed_nss))
4513                         return -EINVAL;
4514         }
4515
4516         if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4517                 ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
4518                 return -EINVAL;
4519         }
4520
4521         return ath10k_set_fixed_rate_param(arvif, fixed_rate,
4522                                            fixed_nss, force_sgi);
4523 }
4524
4525 static void ath10k_sta_rc_update(struct ieee80211_hw *hw,
4526                                  struct ieee80211_vif *vif,
4527                                  struct ieee80211_sta *sta,
4528                                  u32 changed)
4529 {
4530         struct ath10k *ar = hw->priv;
4531         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4532         u32 bw, smps;
4533
4534         spin_lock_bh(&ar->data_lock);
4535
4536         ath10k_dbg(ar, ATH10K_DBG_MAC,
4537                    "mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n",
4538                    sta->addr, changed, sta->bandwidth, sta->rx_nss,
4539                    sta->smps_mode);
4540
4541         if (changed & IEEE80211_RC_BW_CHANGED) {
4542                 bw = WMI_PEER_CHWIDTH_20MHZ;
4543
4544                 switch (sta->bandwidth) {
4545                 case IEEE80211_STA_RX_BW_20:
4546                         bw = WMI_PEER_CHWIDTH_20MHZ;
4547                         break;
4548                 case IEEE80211_STA_RX_BW_40:
4549                         bw = WMI_PEER_CHWIDTH_40MHZ;
4550                         break;
4551                 case IEEE80211_STA_RX_BW_80:
4552                         bw = WMI_PEER_CHWIDTH_80MHZ;
4553                         break;
4554                 case IEEE80211_STA_RX_BW_160:
4555                         ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
4556                                     sta->bandwidth, sta->addr);
4557                         bw = WMI_PEER_CHWIDTH_20MHZ;
4558                         break;
4559                 }
4560
4561                 arsta->bw = bw;
4562         }
4563
4564         if (changed & IEEE80211_RC_NSS_CHANGED)
4565                 arsta->nss = sta->rx_nss;
4566
4567         if (changed & IEEE80211_RC_SMPS_CHANGED) {
4568                 smps = WMI_PEER_SMPS_PS_NONE;
4569
4570                 switch (sta->smps_mode) {
4571                 case IEEE80211_SMPS_AUTOMATIC:
4572                 case IEEE80211_SMPS_OFF:
4573                         smps = WMI_PEER_SMPS_PS_NONE;
4574                         break;
4575                 case IEEE80211_SMPS_STATIC:
4576                         smps = WMI_PEER_SMPS_STATIC;
4577                         break;
4578                 case IEEE80211_SMPS_DYNAMIC:
4579                         smps = WMI_PEER_SMPS_DYNAMIC;
4580                         break;
4581                 case IEEE80211_SMPS_NUM_MODES:
4582                         ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
4583                                     sta->smps_mode, sta->addr);
4584                         smps = WMI_PEER_SMPS_PS_NONE;
4585                         break;
4586                 }
4587
4588                 arsta->smps = smps;
4589         }
4590
4591         arsta->changed |= changed;
4592
4593         spin_unlock_bh(&ar->data_lock);
4594
4595         ieee80211_queue_work(hw, &arsta->update_wk);
4596 }
4597
4598 static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
4599 {
4600         /*
4601          * FIXME: Return 0 for time being. Need to figure out whether FW
4602          * has the API to fetch 64-bit local TSF
4603          */
4604
4605         return 0;
4606 }
4607
4608 static int ath10k_ampdu_action(struct ieee80211_hw *hw,
4609                                struct ieee80211_vif *vif,
4610                                enum ieee80211_ampdu_mlme_action action,
4611                                struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4612                                u8 buf_size)
4613 {
4614         struct ath10k *ar = hw->priv;
4615         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4616
4617         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
4618                    arvif->vdev_id, sta->addr, tid, action);
4619
4620         switch (action) {
4621         case IEEE80211_AMPDU_RX_START:
4622         case IEEE80211_AMPDU_RX_STOP:
4623                 /* HTT AddBa/DelBa events trigger mac80211 Rx BA session
4624                  * creation/removal. Do we need to verify this?
4625                  */
4626                 return 0;
4627         case IEEE80211_AMPDU_TX_START:
4628         case IEEE80211_AMPDU_TX_STOP_CONT:
4629         case IEEE80211_AMPDU_TX_STOP_FLUSH:
4630         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
4631         case IEEE80211_AMPDU_TX_OPERATIONAL:
4632                 /* Firmware offloads Tx aggregation entirely so deny mac80211
4633                  * Tx aggregation requests.
4634                  */
4635                 return -EOPNOTSUPP;
4636         }
4637
4638         return -EINVAL;
4639 }
4640
4641 static const struct ieee80211_ops ath10k_ops = {
4642         .tx                             = ath10k_tx,
4643         .start                          = ath10k_start,
4644         .stop                           = ath10k_stop,
4645         .config                         = ath10k_config,
4646         .add_interface                  = ath10k_add_interface,
4647         .remove_interface               = ath10k_remove_interface,
4648         .configure_filter               = ath10k_configure_filter,
4649         .bss_info_changed               = ath10k_bss_info_changed,
4650         .hw_scan                        = ath10k_hw_scan,
4651         .cancel_hw_scan                 = ath10k_cancel_hw_scan,
4652         .set_key                        = ath10k_set_key,
4653         .sta_state                      = ath10k_sta_state,
4654         .conf_tx                        = ath10k_conf_tx,
4655         .remain_on_channel              = ath10k_remain_on_channel,
4656         .cancel_remain_on_channel       = ath10k_cancel_remain_on_channel,
4657         .set_rts_threshold              = ath10k_set_rts_threshold,
4658         .set_frag_threshold             = ath10k_set_frag_threshold,
4659         .flush                          = ath10k_flush,
4660         .tx_last_beacon                 = ath10k_tx_last_beacon,
4661         .set_antenna                    = ath10k_set_antenna,
4662         .get_antenna                    = ath10k_get_antenna,
4663         .reconfig_complete              = ath10k_reconfig_complete,
4664         .get_survey                     = ath10k_get_survey,
4665         .set_bitrate_mask               = ath10k_set_bitrate_mask,
4666         .sta_rc_update                  = ath10k_sta_rc_update,
4667         .get_tsf                        = ath10k_get_tsf,
4668         .ampdu_action                   = ath10k_ampdu_action,
4669         .get_et_sset_count              = ath10k_debug_get_et_sset_count,
4670         .get_et_stats                   = ath10k_debug_get_et_stats,
4671         .get_et_strings                 = ath10k_debug_get_et_strings,
4672
4673         CFG80211_TESTMODE_CMD(ath10k_tm_cmd)
4674
4675 #ifdef CONFIG_PM
4676         .suspend                        = ath10k_suspend,
4677         .resume                         = ath10k_resume,
4678 #endif
4679 };
4680
4681 #define RATETAB_ENT(_rate, _rateid, _flags) { \
4682         .bitrate                = (_rate), \
4683         .flags                  = (_flags), \
4684         .hw_value               = (_rateid), \
4685 }
4686
4687 #define CHAN2G(_channel, _freq, _flags) { \
4688         .band                   = IEEE80211_BAND_2GHZ, \
4689         .hw_value               = (_channel), \
4690         .center_freq            = (_freq), \
4691         .flags                  = (_flags), \
4692         .max_antenna_gain       = 0, \
4693         .max_power              = 30, \
4694 }
4695
4696 #define CHAN5G(_channel, _freq, _flags) { \
4697         .band                   = IEEE80211_BAND_5GHZ, \
4698         .hw_value               = (_channel), \
4699         .center_freq            = (_freq), \
4700         .flags                  = (_flags), \
4701         .max_antenna_gain       = 0, \
4702         .max_power              = 30, \
4703 }
4704
4705 static const struct ieee80211_channel ath10k_2ghz_channels[] = {
4706         CHAN2G(1, 2412, 0),
4707         CHAN2G(2, 2417, 0),
4708         CHAN2G(3, 2422, 0),
4709         CHAN2G(4, 2427, 0),
4710         CHAN2G(5, 2432, 0),
4711         CHAN2G(6, 2437, 0),
4712         CHAN2G(7, 2442, 0),
4713         CHAN2G(8, 2447, 0),
4714         CHAN2G(9, 2452, 0),
4715         CHAN2G(10, 2457, 0),
4716         CHAN2G(11, 2462, 0),
4717         CHAN2G(12, 2467, 0),
4718         CHAN2G(13, 2472, 0),
4719         CHAN2G(14, 2484, 0),
4720 };
4721
4722 static const struct ieee80211_channel ath10k_5ghz_channels[] = {
4723         CHAN5G(36, 5180, 0),
4724         CHAN5G(40, 5200, 0),
4725         CHAN5G(44, 5220, 0),
4726         CHAN5G(48, 5240, 0),
4727         CHAN5G(52, 5260, 0),
4728         CHAN5G(56, 5280, 0),
4729         CHAN5G(60, 5300, 0),
4730         CHAN5G(64, 5320, 0),
4731         CHAN5G(100, 5500, 0),
4732         CHAN5G(104, 5520, 0),
4733         CHAN5G(108, 5540, 0),
4734         CHAN5G(112, 5560, 0),
4735         CHAN5G(116, 5580, 0),
4736         CHAN5G(120, 5600, 0),
4737         CHAN5G(124, 5620, 0),
4738         CHAN5G(128, 5640, 0),
4739         CHAN5G(132, 5660, 0),
4740         CHAN5G(136, 5680, 0),
4741         CHAN5G(140, 5700, 0),
4742         CHAN5G(149, 5745, 0),
4743         CHAN5G(153, 5765, 0),
4744         CHAN5G(157, 5785, 0),
4745         CHAN5G(161, 5805, 0),
4746         CHAN5G(165, 5825, 0),
4747 };
4748
4749 static struct ieee80211_rate ath10k_rates[] = {
4750         /* CCK */
4751         RATETAB_ENT(10,  0x82, 0),
4752         RATETAB_ENT(20,  0x84, 0),
4753         RATETAB_ENT(55,  0x8b, 0),
4754         RATETAB_ENT(110, 0x96, 0),
4755         /* OFDM */
4756         RATETAB_ENT(60,  0x0c, 0),
4757         RATETAB_ENT(90,  0x12, 0),
4758         RATETAB_ENT(120, 0x18, 0),
4759         RATETAB_ENT(180, 0x24, 0),
4760         RATETAB_ENT(240, 0x30, 0),
4761         RATETAB_ENT(360, 0x48, 0),
4762         RATETAB_ENT(480, 0x60, 0),
4763         RATETAB_ENT(540, 0x6c, 0),
4764 };
4765
4766 #define ath10k_a_rates (ath10k_rates + 4)
4767 #define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4)
4768 #define ath10k_g_rates (ath10k_rates + 0)
4769 #define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))
4770
4771 struct ath10k *ath10k_mac_create(size_t priv_size)
4772 {
4773         struct ieee80211_hw *hw;
4774         struct ath10k *ar;
4775
4776         hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
4777         if (!hw)
4778                 return NULL;
4779
4780         ar = hw->priv;
4781         ar->hw = hw;
4782
4783         return ar;
4784 }
4785
4786 void ath10k_mac_destroy(struct ath10k *ar)
4787 {
4788         ieee80211_free_hw(ar->hw);
4789 }
4790
4791 static const struct ieee80211_iface_limit ath10k_if_limits[] = {
4792         {
4793         .max    = 8,
4794         .types  = BIT(NL80211_IFTYPE_STATION)
4795                 | BIT(NL80211_IFTYPE_P2P_CLIENT)
4796         },
4797         {
4798         .max    = 3,
4799         .types  = BIT(NL80211_IFTYPE_P2P_GO)
4800         },
4801         {
4802         .max    = 7,
4803         .types  = BIT(NL80211_IFTYPE_AP)
4804         },
4805 };
4806
4807 static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4808         {
4809         .max    = 8,
4810         .types  = BIT(NL80211_IFTYPE_AP)
4811         },
4812 };
4813
4814 static const struct ieee80211_iface_combination ath10k_if_comb[] = {
4815         {
4816                 .limits = ath10k_if_limits,
4817                 .n_limits = ARRAY_SIZE(ath10k_if_limits),
4818                 .max_interfaces = 8,
4819                 .num_different_channels = 1,
4820                 .beacon_int_infra_match = true,
4821         },
4822 };
4823
4824 static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4825         {
4826                 .limits = ath10k_10x_if_limits,
4827                 .n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4828                 .max_interfaces = 8,
4829                 .num_different_channels = 1,
4830                 .beacon_int_infra_match = true,
4831 #ifdef CONFIG_ATH10K_DFS_CERTIFIED
4832                 .radar_detect_widths =  BIT(NL80211_CHAN_WIDTH_20_NOHT) |
4833                                         BIT(NL80211_CHAN_WIDTH_20) |
4834                                         BIT(NL80211_CHAN_WIDTH_40) |
4835                                         BIT(NL80211_CHAN_WIDTH_80),
4836 #endif
4837         },
4838 };
4839
4840 static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
4841 {
4842         struct ieee80211_sta_vht_cap vht_cap = {0};
4843         u16 mcs_map;
4844         int i;
4845
4846         vht_cap.vht_supported = 1;
4847         vht_cap.cap = ar->vht_cap_info;
4848
4849         mcs_map = 0;
4850         for (i = 0; i < 8; i++) {
4851                 if (i < ar->num_rf_chains)
4852                         mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
4853                 else
4854                         mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
4855         }
4856
4857         vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
4858         vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
4859
4860         return vht_cap;
4861 }
4862
4863 static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
4864 {
4865         int i;
4866         struct ieee80211_sta_ht_cap ht_cap = {0};
4867
4868         if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
4869                 return ht_cap;
4870
4871         ht_cap.ht_supported = 1;
4872         ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
4873         ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
4874         ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
4875         ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
4876         ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;
4877
4878         if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
4879                 ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
4880
4881         if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
4882                 ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
4883
4884         if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
4885                 u32 smps;
4886
4887                 smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
4888                 smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;
4889
4890                 ht_cap.cap |= smps;
4891         }
4892
4893         if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
4894                 ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
4895
4896         if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
4897                 u32 stbc;
4898
4899                 stbc   = ar->ht_cap_info;
4900                 stbc  &= WMI_HT_CAP_RX_STBC;
4901                 stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
4902                 stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
4903                 stbc  &= IEEE80211_HT_CAP_RX_STBC;
4904
4905                 ht_cap.cap |= stbc;
4906         }
4907
4908         if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
4909                 ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;
4910
4911         if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
4912                 ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;
4913
4914         /* max AMSDU is implicitly taken from vht_cap_info */
4915         if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
4916                 ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
4917
4918         for (i = 0; i < ar->num_rf_chains; i++)
4919                 ht_cap.mcs.rx_mask[i] = 0xFF;
4920
4921         ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
4922
4923         return ht_cap;
4924 }
4925
4926 static void ath10k_get_arvif_iter(void *data, u8 *mac,
4927                                   struct ieee80211_vif *vif)
4928 {
4929         struct ath10k_vif_iter *arvif_iter = data;
4930         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4931
4932         if (arvif->vdev_id == arvif_iter->vdev_id)
4933                 arvif_iter->arvif = arvif;
4934 }
4935
4936 struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
4937 {
4938         struct ath10k_vif_iter arvif_iter;
4939         u32 flags;
4940
4941         memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
4942         arvif_iter.vdev_id = vdev_id;
4943
4944         flags = IEEE80211_IFACE_ITER_RESUME_ALL;
4945         ieee80211_iterate_active_interfaces_atomic(ar->hw,
4946                                                    flags,
4947                                                    ath10k_get_arvif_iter,
4948                                                    &arvif_iter);
4949         if (!arvif_iter.arvif) {
4950                 ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
4951                 return NULL;
4952         }
4953
4954         return arvif_iter.arvif;
4955 }
4956
4957 int ath10k_mac_register(struct ath10k *ar)
4958 {
4959         struct ieee80211_supported_band *band;
4960         struct ieee80211_sta_vht_cap vht_cap;
4961         struct ieee80211_sta_ht_cap ht_cap;
4962         void *channels;
4963         int ret;
4964
4965         SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);
4966
4967         SET_IEEE80211_DEV(ar->hw, ar->dev);
4968
4969         ht_cap = ath10k_get_ht_cap(ar);
4970         vht_cap = ath10k_create_vht_cap(ar);
4971
4972         if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
4973                 channels = kmemdup(ath10k_2ghz_channels,
4974                                    sizeof(ath10k_2ghz_channels),
4975                                    GFP_KERNEL);
4976                 if (!channels) {
4977                         ret = -ENOMEM;
4978                         goto err_free;
4979                 }
4980
4981                 band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
4982                 band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
4983                 band->channels = channels;
4984                 band->n_bitrates = ath10k_g_rates_size;
4985                 band->bitrates = ath10k_g_rates;
4986                 band->ht_cap = ht_cap;
4987
4988                 /* vht is not supported in 2.4 GHz */
4989
4990                 ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
4991         }
4992
4993         if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
4994                 channels = kmemdup(ath10k_5ghz_channels,
4995                                    sizeof(ath10k_5ghz_channels),
4996                                    GFP_KERNEL);
4997                 if (!channels) {
4998                         ret = -ENOMEM;
4999                         goto err_free;
5000                 }
5001
5002                 band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
5003                 band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
5004                 band->channels = channels;
5005                 band->n_bitrates = ath10k_a_rates_size;
5006                 band->bitrates = ath10k_a_rates;
5007                 band->ht_cap = ht_cap;
5008                 band->vht_cap = vht_cap;
5009                 ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
5010         }
5011
5012         ar->hw->wiphy->interface_modes =
5013                 BIT(NL80211_IFTYPE_STATION) |
5014                 BIT(NL80211_IFTYPE_AP);
5015
5016         ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
5017         ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;
5018
5019         if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
5020                 ar->hw->wiphy->interface_modes |=
5021                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
5022                         BIT(NL80211_IFTYPE_P2P_GO);
5023
5024         ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
5025                         IEEE80211_HW_SUPPORTS_PS |
5026                         IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
5027                         IEEE80211_HW_SUPPORTS_UAPSD |
5028                         IEEE80211_HW_MFP_CAPABLE |
5029                         IEEE80211_HW_REPORTS_TX_ACK_STATUS |
5030                         IEEE80211_HW_HAS_RATE_CONTROL |
5031                         IEEE80211_HW_AP_LINK_PS |
5032                         IEEE80211_HW_SPECTRUM_MGMT;
5033
5034         ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
5035
5036         if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
5037                 ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
5038
5039         if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
5040                 ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
5041                 ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
5042         }
5043
5044         ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
5045         ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;
5046
5047         ar->hw->vif_data_size = sizeof(struct ath10k_vif);
5048         ar->hw->sta_data_size = sizeof(struct ath10k_sta);
5049
5050         ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;
5051
5052         ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
5053         ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
5054         ar->hw->wiphy->max_remain_on_channel_duration = 5000;
5055
5056         ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
5057         ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
5058
5059         /*
5060          * on LL hardware queues are managed entirely by the FW
5061          * so we only advertise to mac we can do the queues thing
5062          */
5063         ar->hw->queues = 4;
5064
5065         if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
5066                 ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
5067                 ar->hw->wiphy->n_iface_combinations =
5068                         ARRAY_SIZE(ath10k_10x_if_comb);
5069         } else {
5070                 ar->hw->wiphy->iface_combinations = ath10k_if_comb;
5071                 ar->hw->wiphy->n_iface_combinations =
5072                         ARRAY_SIZE(ath10k_if_comb);
5073
5074                 ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
5075         }
5076
5077         ar->hw->netdev_features = NETIF_F_HW_CSUM;
5078
5079         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
5080                 /* Init ath dfs pattern detector */
5081                 ar->ath_common.debug_mask = ATH_DBG_DFS;
5082                 ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
5083                                                              NL80211_DFS_UNSET);
5084
5085                 if (!ar->dfs_detector)
5086                         ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
5087         }
5088
5089         ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
5090                             ath10k_reg_notifier);
5091         if (ret) {
5092                 ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
5093                 goto err_free;
5094         }
5095
5096         ret = ieee80211_register_hw(ar->hw);
5097         if (ret) {
5098                 ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
5099                 goto err_free;
5100         }
5101
5102         if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
5103                 ret = regulatory_hint(ar->hw->wiphy,
5104                                       ar->ath_common.regulatory.alpha2);
5105                 if (ret)
5106                         goto err_unregister;
5107         }
5108
5109         return 0;
5110
5111 err_unregister:
5112         ieee80211_unregister_hw(ar->hw);
5113 err_free:
5114         kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
5115         kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
5116
5117         return ret;
5118 }
5119
5120 void ath10k_mac_unregister(struct ath10k *ar)
5121 {
5122         ieee80211_unregister_hw(ar->hw);
5123
5124         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
5125                 ar->dfs_detector->exit(ar->dfs_detector);
5126
5127         kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
5128         kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
5129
5130         SET_IEEE80211_DEV(ar->hw, NULL);
5131 }