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         ret = ath10k_wmi_peer_create(ar, vdev_id, addr);
 359         if (ret) {
 360                 ath10k_warn(ar, "failed to create wmi peer %pM on vdev %i: %i\n",
 361                             addr, vdev_id, ret);
 362                 return ret;
 363         }
 364
 365         ret = ath10k_wait_for_peer_created(ar, vdev_id, addr);
 366         if (ret) {
 367                 ath10k_warn(ar, "failed to wait for created wmi peer %pM on vdev %i: %i\n",
 368                             addr, vdev_id, ret);
 369                 return ret;
 370         }
 371
 372         ar->num_peers++;
 373
 374         return 0;
 375 }
 376
 377 static int ath10k_mac_set_kickout(struct ath10k_vif *arvif)
 378 {
 379         struct ath10k *ar = arvif->ar;
 380         u32 param;
 381         int ret;
 382
 383         param = ar->wmi.pdev_param->sta_kickout_th;
 384         ret = ath10k_wmi_pdev_set_param(ar, param,
 385                                         ATH10K_KICKOUT_THRESHOLD);
 386         if (ret) {
 387                 ath10k_warn(ar, "failed to set kickout threshold on vdev %i: %d\n",
 388                             arvif->vdev_id, ret);
 389                 return ret;
 390         }
 391
 392         param = ar->wmi.vdev_param->ap_keepalive_min_idle_inactive_time_secs;
 393         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 394                                         ATH10K_KEEPALIVE_MIN_IDLE);
 395         if (ret) {
 396                 ath10k_warn(ar, "failed to set keepalive minimum idle time on vdev %i: %d\n",
 397                             arvif->vdev_id, ret);
 398                 return ret;
 399         }
 400
 401         param = ar->wmi.vdev_param->ap_keepalive_max_idle_inactive_time_secs;
 402         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 403                                         ATH10K_KEEPALIVE_MAX_IDLE);
 404         if (ret) {
 405                 ath10k_warn(ar, "failed to set keepalive maximum idle time on vdev %i: %d\n",
 406                             arvif->vdev_id, ret);
 407                 return ret;
 408         }
 409
 410         param = ar->wmi.vdev_param->ap_keepalive_max_unresponsive_time_secs;
 411         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, param,
 412                                         ATH10K_KEEPALIVE_MAX_UNRESPONSIVE);
 413         if (ret) {
 414                 ath10k_warn(ar, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n",
 415                             arvif->vdev_id, ret);
 416                 return ret;
 417         }
 418
 419         return 0;
 420 }
 421
 422 static int  ath10k_mac_set_rts(struct ath10k_vif *arvif, u32 value)
 423 {
 424         struct ath10k *ar = arvif->ar;
 425         u32 vdev_param;
 426
 427         if (value != 0xFFFFFFFF)
 428                 value = min_t(u32, arvif->ar->hw->wiphy->rts_threshold,
 429                               ATH10K_RTS_MAX);
 430
 431         vdev_param = ar->wmi.vdev_param->rts_threshold;
 432         return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
 433 }
 434
 435 static int ath10k_mac_set_frag(struct ath10k_vif *arvif, u32 value)
 436 {
 437         struct ath10k *ar = arvif->ar;
 438         u32 vdev_param;
 439
 440         if (value != 0xFFFFFFFF)
 441                 value = clamp_t(u32, arvif->ar->hw->wiphy->frag_threshold,
 442                                 ATH10K_FRAGMT_THRESHOLD_MIN,
 443                                 ATH10K_FRAGMT_THRESHOLD_MAX);
 444
 445         vdev_param = ar->wmi.vdev_param->fragmentation_threshold;
 446         return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param, value);
 447 }
 448
 449 static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
 450 {
 451         int ret;
 452
 453         lockdep_assert_held(&ar->conf_mutex);
 454
 455         ret = ath10k_wmi_peer_delete(ar, vdev_id, addr);
 456         if (ret)
 457                 return ret;
 458
 459         ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr);
 460         if (ret)
 461                 return ret;
 462
 463         ar->num_peers--;
 464
 465         return 0;
 466 }
 467
 468 static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
 469 {
 470         struct ath10k_peer *peer, *tmp;
 471
 472         lockdep_assert_held(&ar->conf_mutex);
 473
 474         spin_lock_bh(&ar->data_lock);
 475         list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
 476                 if (peer->vdev_id != vdev_id)
 477                         continue;
 478
 479                 ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
 480                             peer->addr, vdev_id);
 481
 482                 list_del(&peer->list);
 483                 kfree(peer);
 484                 ar->num_peers--;
 485         }
 486         spin_unlock_bh(&ar->data_lock);
 487 }
 488
 489 static void ath10k_peer_cleanup_all(struct ath10k *ar)
 490 {
 491         struct ath10k_peer *peer, *tmp;
 492
 493         lockdep_assert_held(&ar->conf_mutex);
 494
 495         spin_lock_bh(&ar->data_lock);
 496         list_for_each_entry_safe(peer, tmp, &ar->peers, list) {
 497                 list_del(&peer->list);
 498                 kfree(peer);
 499         }
 500         spin_unlock_bh(&ar->data_lock);
 501
 502         ar->num_peers = 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_sta_state(struct ieee80211_hw *hw,
3600                             struct ieee80211_vif *vif,
3601                             struct ieee80211_sta *sta,
3602                             enum ieee80211_sta_state old_state,
3603                             enum ieee80211_sta_state new_state)
3604 {
3605         struct ath10k *ar = hw->priv;
3606         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3607         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
3608         int max_num_peers;
3609         int ret = 0;
3610
3611         if (old_state == IEEE80211_STA_NOTEXIST &&
3612             new_state == IEEE80211_STA_NONE) {
3613                 memset(arsta, 0, sizeof(*arsta));
3614                 arsta->arvif = arvif;
3615                 INIT_WORK(&arsta->update_wk, ath10k_sta_rc_update_wk);
3616         }
3617
3618         /* cancel must be done outside the mutex to avoid deadlock */
3619         if ((old_state == IEEE80211_STA_NONE &&
3620              new_state == IEEE80211_STA_NOTEXIST))
3621                 cancel_work_sync(&arsta->update_wk);
3622
3623         mutex_lock(&ar->conf_mutex);
3624
3625         if (old_state == IEEE80211_STA_NOTEXIST &&
3626             new_state == IEEE80211_STA_NONE) {
3627                 /*
3628                  * New station addition.
3629                  */
3630                 if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features))
3631                         max_num_peers = TARGET_10X_NUM_PEERS_MAX - 1;
3632                 else
3633                         max_num_peers = TARGET_NUM_PEERS;
3634
3635                 if (ar->num_peers >= max_num_peers) {
3636                         ath10k_warn(ar, "number of peers exceeded: peers number %d (max peers %d)\n",
3637                                     ar->num_peers, max_num_peers);
3638                         ret = -ENOBUFS;
3639                         goto exit;
3640                 }
3641
3642                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3643                            "mac vdev %d peer create %pM (new sta) num_peers %d\n",
3644                            arvif->vdev_id, sta->addr, ar->num_peers);
3645
3646                 ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr);
3647                 if (ret) {
3648                         ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
3649                                     sta->addr, arvif->vdev_id, ret);
3650                         goto exit;
3651                 }
3652
3653                 if (vif->type == NL80211_IFTYPE_STATION) {
3654                         WARN_ON(arvif->is_started);
3655
3656                         ret = ath10k_vdev_start(arvif);
3657                         if (ret) {
3658                                 ath10k_warn(ar, "failed to start vdev %i: %d\n",
3659                                             arvif->vdev_id, ret);
3660                                 WARN_ON(ath10k_peer_delete(ar, arvif->vdev_id,
3661                                                            sta->addr));
3662                                 goto exit;
3663                         }
3664
3665                         arvif->is_started = true;
3666                 }
3667         } else if ((old_state == IEEE80211_STA_NONE &&
3668                     new_state == IEEE80211_STA_NOTEXIST)) {
3669                 /*
3670                  * Existing station deletion.
3671                  */
3672                 ath10k_dbg(ar, ATH10K_DBG_MAC,
3673                            "mac vdev %d peer delete %pM (sta gone)\n",
3674                            arvif->vdev_id, sta->addr);
3675
3676                 if (vif->type == NL80211_IFTYPE_STATION) {
3677                         WARN_ON(!arvif->is_started);
3678
3679                         ret = ath10k_vdev_stop(arvif);
3680                         if (ret)
3681                                 ath10k_warn(ar, "failed to stop vdev %i: %d\n",
3682                                             arvif->vdev_id, ret);
3683
3684                         arvif->is_started = false;
3685                 }
3686
3687                 ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr);
3688                 if (ret)
3689                         ath10k_warn(ar, "failed to delete peer %pM for vdev %d: %i\n",
3690                                     sta->addr, arvif->vdev_id, ret);
3691
3692         } else if (old_state == IEEE80211_STA_AUTH &&
3693                    new_state == IEEE80211_STA_ASSOC &&
3694                    (vif->type == NL80211_IFTYPE_AP ||
3695                     vif->type == NL80211_IFTYPE_ADHOC)) {
3696                 /*
3697                  * New association.
3698                  */
3699                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM associated\n",
3700                            sta->addr);
3701
3702                 ret = ath10k_station_assoc(ar, vif, sta, false);
3703                 if (ret)
3704                         ath10k_warn(ar, "failed to associate station %pM for vdev %i: %i\n",
3705                                     sta->addr, arvif->vdev_id, ret);
3706         } else if (old_state == IEEE80211_STA_ASSOC &&
3707                    new_state == IEEE80211_STA_AUTH &&
3708                    (vif->type == NL80211_IFTYPE_AP ||
3709                     vif->type == NL80211_IFTYPE_ADHOC)) {
3710                 /*
3711                  * Disassociation.
3712                  */
3713                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac sta %pM disassociated\n",
3714                            sta->addr);
3715
3716                 ret = ath10k_station_disassoc(ar, vif, sta);
3717                 if (ret)
3718                         ath10k_warn(ar, "failed to disassociate station: %pM vdev %i: %i\n",
3719                                     sta->addr, arvif->vdev_id, ret);
3720         }
3721 exit:
3722         mutex_unlock(&ar->conf_mutex);
3723         return ret;
3724 }
3725
3726 static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif,
3727                                 u16 ac, bool enable)
3728 {
3729         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3730         u32 value = 0;
3731         int ret = 0;
3732
3733         lockdep_assert_held(&ar->conf_mutex);
3734
3735         if (arvif->vdev_type != WMI_VDEV_TYPE_STA)
3736                 return 0;
3737
3738         switch (ac) {
3739         case IEEE80211_AC_VO:
3740                 value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN |
3741                         WMI_STA_PS_UAPSD_AC3_TRIGGER_EN;
3742                 break;
3743         case IEEE80211_AC_VI:
3744                 value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN |
3745                         WMI_STA_PS_UAPSD_AC2_TRIGGER_EN;
3746                 break;
3747         case IEEE80211_AC_BE:
3748                 value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN |
3749                         WMI_STA_PS_UAPSD_AC1_TRIGGER_EN;
3750                 break;
3751         case IEEE80211_AC_BK:
3752                 value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN |
3753                         WMI_STA_PS_UAPSD_AC0_TRIGGER_EN;
3754                 break;
3755         }
3756
3757         if (enable)
3758                 arvif->u.sta.uapsd |= value;
3759         else
3760                 arvif->u.sta.uapsd &= ~value;
3761
3762         ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3763                                           WMI_STA_PS_PARAM_UAPSD,
3764                                           arvif->u.sta.uapsd);
3765         if (ret) {
3766                 ath10k_warn(ar, "failed to set uapsd params: %d\n", ret);
3767                 goto exit;
3768         }
3769
3770         if (arvif->u.sta.uapsd)
3771                 value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD;
3772         else
3773                 value = WMI_STA_PS_RX_WAKE_POLICY_WAKE;
3774
3775         ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id,
3776                                           WMI_STA_PS_PARAM_RX_WAKE_POLICY,
3777                                           value);
3778         if (ret)
3779                 ath10k_warn(ar, "failed to set rx wake param: %d\n", ret);
3780
3781 exit:
3782         return ret;
3783 }
3784
3785 static int ath10k_conf_tx(struct ieee80211_hw *hw,
3786                           struct ieee80211_vif *vif, u16 ac,
3787                           const struct ieee80211_tx_queue_params *params)
3788 {
3789         struct ath10k *ar = hw->priv;
3790         struct wmi_wmm_params_arg *p = NULL;
3791         int ret;
3792
3793         mutex_lock(&ar->conf_mutex);
3794
3795         switch (ac) {
3796         case IEEE80211_AC_VO:
3797                 p = &ar->wmm_params.ac_vo;
3798                 break;
3799         case IEEE80211_AC_VI:
3800                 p = &ar->wmm_params.ac_vi;
3801                 break;
3802         case IEEE80211_AC_BE:
3803                 p = &ar->wmm_params.ac_be;
3804                 break;
3805         case IEEE80211_AC_BK:
3806                 p = &ar->wmm_params.ac_bk;
3807                 break;
3808         }
3809
3810         if (WARN_ON(!p)) {
3811                 ret = -EINVAL;
3812                 goto exit;
3813         }
3814
3815         p->cwmin = params->cw_min;
3816         p->cwmax = params->cw_max;
3817         p->aifs = params->aifs;
3818
3819         /*
3820          * The channel time duration programmed in the HW is in absolute
3821          * microseconds, while mac80211 gives the txop in units of
3822          * 32 microseconds.
3823          */
3824         p->txop = params->txop * 32;
3825
3826         /* FIXME: FW accepts wmm params per hw, not per vif */
3827         ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params);
3828         if (ret) {
3829                 ath10k_warn(ar, "failed to set wmm params: %d\n", ret);
3830                 goto exit;
3831         }
3832
3833         ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd);
3834         if (ret)
3835                 ath10k_warn(ar, "failed to set sta uapsd: %d\n", ret);
3836
3837 exit:
3838         mutex_unlock(&ar->conf_mutex);
3839         return ret;
3840 }
3841
3842 #define ATH10K_ROC_TIMEOUT_HZ (2*HZ)
3843
3844 static int ath10k_remain_on_channel(struct ieee80211_hw *hw,
3845                                     struct ieee80211_vif *vif,
3846                                     struct ieee80211_channel *chan,
3847                                     int duration,
3848                                     enum ieee80211_roc_type type)
3849 {
3850         struct ath10k *ar = hw->priv;
3851         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
3852         struct wmi_start_scan_arg arg;
3853         int ret = 0;
3854
3855         mutex_lock(&ar->conf_mutex);
3856
3857         spin_lock_bh(&ar->data_lock);
3858         switch (ar->scan.state) {
3859         case ATH10K_SCAN_IDLE:
3860                 reinit_completion(&ar->scan.started);
3861                 reinit_completion(&ar->scan.completed);
3862                 reinit_completion(&ar->scan.on_channel);
3863                 ar->scan.state = ATH10K_SCAN_STARTING;
3864                 ar->scan.is_roc = true;
3865                 ar->scan.vdev_id = arvif->vdev_id;
3866                 ar->scan.roc_freq = chan->center_freq;
3867                 ret = 0;
3868                 break;
3869         case ATH10K_SCAN_STARTING:
3870         case ATH10K_SCAN_RUNNING:
3871         case ATH10K_SCAN_ABORTING:
3872                 ret = -EBUSY;
3873                 break;
3874         }
3875         spin_unlock_bh(&ar->data_lock);
3876
3877         if (ret)
3878                 goto exit;
3879
3880         duration = max(duration, WMI_SCAN_CHAN_MIN_TIME_MSEC);
3881
3882         memset(&arg, 0, sizeof(arg));
3883         ath10k_wmi_start_scan_init(ar, &arg);
3884         arg.vdev_id = arvif->vdev_id;
3885         arg.scan_id = ATH10K_SCAN_ID;
3886         arg.n_channels = 1;
3887         arg.channels[0] = chan->center_freq;
3888         arg.dwell_time_active = duration;
3889         arg.dwell_time_passive = duration;
3890         arg.max_scan_time = 2 * duration;
3891         arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE;
3892         arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ;
3893
3894         ret = ath10k_start_scan(ar, &arg);
3895         if (ret) {
3896                 ath10k_warn(ar, "failed to start roc scan: %d\n", ret);
3897                 spin_lock_bh(&ar->data_lock);
3898                 ar->scan.state = ATH10K_SCAN_IDLE;
3899                 spin_unlock_bh(&ar->data_lock);
3900                 goto exit;
3901         }
3902
3903         ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ);
3904         if (ret == 0) {
3905                 ath10k_warn(ar, "failed to switch to channel for roc scan\n");
3906
3907                 ret = ath10k_scan_stop(ar);
3908                 if (ret)
3909                         ath10k_warn(ar, "failed to stop scan: %d\n", ret);
3910
3911                 ret = -ETIMEDOUT;
3912                 goto exit;
3913         }
3914
3915         ret = 0;
3916 exit:
3917         mutex_unlock(&ar->conf_mutex);
3918         return ret;
3919 }
3920
3921 static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw)
3922 {
3923         struct ath10k *ar = hw->priv;
3924
3925         mutex_lock(&ar->conf_mutex);
3926         ath10k_scan_abort(ar);
3927         mutex_unlock(&ar->conf_mutex);
3928
3929         cancel_delayed_work_sync(&ar->scan.timeout);
3930
3931         return 0;
3932 }
3933
3934 /*
3935  * Both RTS and Fragmentation threshold are interface-specific
3936  * in ath10k, but device-specific in mac80211.
3937  */
3938
3939 static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3940 {
3941         struct ath10k *ar = hw->priv;
3942         struct ath10k_vif *arvif;
3943         int ret = 0;
3944
3945         mutex_lock(&ar->conf_mutex);
3946         list_for_each_entry(arvif, &ar->arvifs, list) {
3947                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d rts threshold %d\n",
3948                            arvif->vdev_id, value);
3949
3950                 ret = ath10k_mac_set_rts(arvif, value);
3951                 if (ret) {
3952                         ath10k_warn(ar, "failed to set rts threshold for vdev %d: %d\n",
3953                                     arvif->vdev_id, ret);
3954                         break;
3955                 }
3956         }
3957         mutex_unlock(&ar->conf_mutex);
3958
3959         return ret;
3960 }
3961
3962 static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3963 {
3964         struct ath10k *ar = hw->priv;
3965         struct ath10k_vif *arvif;
3966         int ret = 0;
3967
3968         mutex_lock(&ar->conf_mutex);
3969         list_for_each_entry(arvif, &ar->arvifs, list) {
3970                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d fragmentation threshold %d\n",
3971                            arvif->vdev_id, value);
3972
3973                 ret = ath10k_mac_set_frag(arvif, value);
3974                 if (ret) {
3975                         ath10k_warn(ar, "failed to set fragmentation threshold for vdev %d: %d\n",
3976                                     arvif->vdev_id, ret);
3977                         break;
3978                 }
3979         }
3980         mutex_unlock(&ar->conf_mutex);
3981
3982         return ret;
3983 }
3984
3985 static void ath10k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
3986                          u32 queues, bool drop)
3987 {
3988         struct ath10k *ar = hw->priv;
3989         bool skip;
3990         int ret;
3991
3992         /* mac80211 doesn't care if we really xmit queued frames or not
3993          * we'll collect those frames either way if we stop/delete vdevs */
3994         if (drop)
3995                 return;
3996
3997         mutex_lock(&ar->conf_mutex);
3998
3999         if (ar->state == ATH10K_STATE_WEDGED)
4000                 goto skip;
4001
4002         ret = wait_event_timeout(ar->htt.empty_tx_wq, ({
4003                         bool empty;
4004
4005                         spin_lock_bh(&ar->htt.tx_lock);
4006                         empty = (ar->htt.num_pending_tx == 0);
4007                         spin_unlock_bh(&ar->htt.tx_lock);
4008
4009                         skip = (ar->state == ATH10K_STATE_WEDGED) ||
4010                                test_bit(ATH10K_FLAG_CRASH_FLUSH,
4011                                         &ar->dev_flags);
4012
4013                         (empty || skip);
4014                 }), ATH10K_FLUSH_TIMEOUT_HZ);
4015
4016         if (ret <= 0 || skip)
4017                 ath10k_warn(ar, "failed to flush transmit queue (skip %i ar-state %i): %i\n",
4018                             skip, ar->state, ret);
4019
4020 skip:
4021         mutex_unlock(&ar->conf_mutex);
4022 }
4023
4024 /* TODO: Implement this function properly
4025  * For now it is needed to reply to Probe Requests in IBSS mode.
4026  * Propably we need this information from FW.
4027  */
4028 static int ath10k_tx_last_beacon(struct ieee80211_hw *hw)
4029 {
4030         return 1;
4031 }
4032
4033 #ifdef CONFIG_PM
4034 static int ath10k_suspend(struct ieee80211_hw *hw,
4035                           struct cfg80211_wowlan *wowlan)
4036 {
4037         struct ath10k *ar = hw->priv;
4038         int ret;
4039
4040         mutex_lock(&ar->conf_mutex);
4041
4042         ret = ath10k_wait_for_suspend(ar, WMI_PDEV_SUSPEND);
4043         if (ret) {
4044                 if (ret == -ETIMEDOUT)
4045                         goto resume;
4046                 ret = 1;
4047                 goto exit;
4048         }
4049
4050         ret = ath10k_hif_suspend(ar);
4051         if (ret) {
4052                 ath10k_warn(ar, "failed to suspend hif: %d\n", ret);
4053                 goto resume;
4054         }
4055
4056         ret = 0;
4057         goto exit;
4058 resume:
4059         ret = ath10k_wmi_pdev_resume_target(ar);
4060         if (ret)
4061                 ath10k_warn(ar, "failed to resume target: %d\n", ret);
4062
4063         ret = 1;
4064 exit:
4065         mutex_unlock(&ar->conf_mutex);
4066         return ret;
4067 }
4068
4069 static int ath10k_resume(struct ieee80211_hw *hw)
4070 {
4071         struct ath10k *ar = hw->priv;
4072         int ret;
4073
4074         mutex_lock(&ar->conf_mutex);
4075
4076         ret = ath10k_hif_resume(ar);
4077         if (ret) {
4078                 ath10k_warn(ar, "failed to resume hif: %d\n", ret);
4079                 ret = 1;
4080                 goto exit;
4081         }
4082
4083         ret = ath10k_wmi_pdev_resume_target(ar);
4084         if (ret) {
4085                 ath10k_warn(ar, "failed to resume target: %d\n", ret);
4086                 ret = 1;
4087                 goto exit;
4088         }
4089
4090         ret = 0;
4091 exit:
4092         mutex_unlock(&ar->conf_mutex);
4093         return ret;
4094 }
4095 #endif
4096
4097 static void ath10k_reconfig_complete(struct ieee80211_hw *hw,
4098                                      enum ieee80211_reconfig_type reconfig_type)
4099 {
4100         struct ath10k *ar = hw->priv;
4101
4102         if (reconfig_type != IEEE80211_RECONFIG_TYPE_RESTART)
4103                 return;
4104
4105         mutex_lock(&ar->conf_mutex);
4106
4107         /* If device failed to restart it will be in a different state, e.g.
4108          * ATH10K_STATE_WEDGED */
4109         if (ar->state == ATH10K_STATE_RESTARTED) {
4110                 ath10k_info(ar, "device successfully recovered\n");
4111                 ar->state = ATH10K_STATE_ON;
4112                 ieee80211_wake_queues(ar->hw);
4113         }
4114
4115         mutex_unlock(&ar->conf_mutex);
4116 }
4117
4118 static int ath10k_get_survey(struct ieee80211_hw *hw, int idx,
4119                              struct survey_info *survey)
4120 {
4121         struct ath10k *ar = hw->priv;
4122         struct ieee80211_supported_band *sband;
4123         struct survey_info *ar_survey = &ar->survey[idx];
4124         int ret = 0;
4125
4126         mutex_lock(&ar->conf_mutex);
4127
4128         sband = hw->wiphy->bands[IEEE80211_BAND_2GHZ];
4129         if (sband && idx >= sband->n_channels) {
4130                 idx -= sband->n_channels;
4131                 sband = NULL;
4132         }
4133
4134         if (!sband)
4135                 sband = hw->wiphy->bands[IEEE80211_BAND_5GHZ];
4136
4137         if (!sband || idx >= sband->n_channels) {
4138                 ret = -ENOENT;
4139                 goto exit;
4140         }
4141
4142         spin_lock_bh(&ar->data_lock);
4143         memcpy(survey, ar_survey, sizeof(*survey));
4144         spin_unlock_bh(&ar->data_lock);
4145
4146         survey->channel = &sband->channels[idx];
4147
4148         if (ar->rx_channel == survey->channel)
4149                 survey->filled |= SURVEY_INFO_IN_USE;
4150
4151 exit:
4152         mutex_unlock(&ar->conf_mutex);
4153         return ret;
4154 }
4155
4156 /* Helper table for legacy fixed_rate/bitrate_mask */
4157 static const u8 cck_ofdm_rate[] = {
4158         /* CCK */
4159         3, /* 1Mbps */
4160         2, /* 2Mbps */
4161         1, /* 5.5Mbps */
4162         0, /* 11Mbps */
4163         /* OFDM */
4164         3, /* 6Mbps */
4165         7, /* 9Mbps */
4166         2, /* 12Mbps */
4167         6, /* 18Mbps */
4168         1, /* 24Mbps */
4169         5, /* 36Mbps */
4170         0, /* 48Mbps */
4171         4, /* 54Mbps */
4172 };
4173
4174 /* Check if only one bit set */
4175 static int ath10k_check_single_mask(u32 mask)
4176 {
4177         int bit;
4178
4179         bit = ffs(mask);
4180         if (!bit)
4181                 return 0;
4182
4183         mask &= ~BIT(bit - 1);
4184         if (mask)
4185                 return 2;
4186
4187         return 1;
4188 }
4189
4190 static bool
4191 ath10k_default_bitrate_mask(struct ath10k *ar,
4192                             enum ieee80211_band band,
4193                             const struct cfg80211_bitrate_mask *mask)
4194 {
4195         u32 legacy = 0x00ff;
4196         u8 ht = 0xff, i;
4197         u16 vht = 0x3ff;
4198         u16 nrf = ar->num_rf_chains;
4199
4200         if (ar->cfg_tx_chainmask)
4201                 nrf = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4202
4203         switch (band) {
4204         case IEEE80211_BAND_2GHZ:
4205                 legacy = 0x00fff;
4206                 vht = 0;
4207                 break;
4208         case IEEE80211_BAND_5GHZ:
4209                 break;
4210         default:
4211                 return false;
4212         }
4213
4214         if (mask->control[band].legacy != legacy)
4215                 return false;
4216
4217         for (i = 0; i < nrf; i++)
4218                 if (mask->control[band].ht_mcs[i] != ht)
4219                         return false;
4220
4221         for (i = 0; i < nrf; i++)
4222                 if (mask->control[band].vht_mcs[i] != vht)
4223                         return false;
4224
4225         return true;
4226 }
4227
4228 static bool
4229 ath10k_bitrate_mask_nss(const struct cfg80211_bitrate_mask *mask,
4230                         enum ieee80211_band band,
4231                         u8 *fixed_nss)
4232 {
4233         int ht_nss = 0, vht_nss = 0, i;
4234
4235         /* check legacy */
4236         if (ath10k_check_single_mask(mask->control[band].legacy))
4237                 return false;
4238
4239         /* check HT */
4240         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4241                 if (mask->control[band].ht_mcs[i] == 0xff)
4242                         continue;
4243                 else if (mask->control[band].ht_mcs[i] == 0x00)
4244                         break;
4245
4246                 return false;
4247         }
4248
4249         ht_nss = i;
4250
4251         /* check VHT */
4252         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4253                 if (mask->control[band].vht_mcs[i] == 0x03ff)
4254                         continue;
4255                 else if (mask->control[band].vht_mcs[i] == 0x0000)
4256                         break;
4257
4258                 return false;
4259         }
4260
4261         vht_nss = i;
4262
4263         if (ht_nss > 0 && vht_nss > 0)
4264                 return false;
4265
4266         if (ht_nss)
4267                 *fixed_nss = ht_nss;
4268         else if (vht_nss)
4269                 *fixed_nss = vht_nss;
4270         else
4271                 return false;
4272
4273         return true;
4274 }
4275
4276 static bool
4277 ath10k_bitrate_mask_correct(const struct cfg80211_bitrate_mask *mask,
4278                             enum ieee80211_band band,
4279                             enum wmi_rate_preamble *preamble)
4280 {
4281         int legacy = 0, ht = 0, vht = 0, i;
4282
4283         *preamble = WMI_RATE_PREAMBLE_OFDM;
4284
4285         /* check legacy */
4286         legacy = ath10k_check_single_mask(mask->control[band].legacy);
4287         if (legacy > 1)
4288                 return false;
4289
4290         /* check HT */
4291         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4292                 ht += ath10k_check_single_mask(mask->control[band].ht_mcs[i]);
4293         if (ht > 1)
4294                 return false;
4295
4296         /* check VHT */
4297         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4298                 vht += ath10k_check_single_mask(mask->control[band].vht_mcs[i]);
4299         if (vht > 1)
4300                 return false;
4301
4302         /* Currently we support only one fixed_rate */
4303         if ((legacy + ht + vht) != 1)
4304                 return false;
4305
4306         if (ht)
4307                 *preamble = WMI_RATE_PREAMBLE_HT;
4308         else if (vht)
4309                 *preamble = WMI_RATE_PREAMBLE_VHT;
4310
4311         return true;
4312 }
4313
4314 static bool
4315 ath10k_bitrate_mask_rate(struct ath10k *ar,
4316                          const struct cfg80211_bitrate_mask *mask,
4317                          enum ieee80211_band band,
4318                          u8 *fixed_rate,
4319                          u8 *fixed_nss)
4320 {
4321         u8 rate = 0, pream = 0, nss = 0, i;
4322         enum wmi_rate_preamble preamble;
4323
4324         /* Check if single rate correct */
4325         if (!ath10k_bitrate_mask_correct(mask, band, &preamble))
4326                 return false;
4327
4328         pream = preamble;
4329
4330         switch (preamble) {
4331         case WMI_RATE_PREAMBLE_CCK:
4332         case WMI_RATE_PREAMBLE_OFDM:
4333                 i = ffs(mask->control[band].legacy) - 1;
4334
4335                 if (band == IEEE80211_BAND_2GHZ && i < 4)
4336                         pream = WMI_RATE_PREAMBLE_CCK;
4337
4338                 if (band == IEEE80211_BAND_5GHZ)
4339                         i += 4;
4340
4341                 if (i >= ARRAY_SIZE(cck_ofdm_rate))
4342                         return false;
4343
4344                 rate = cck_ofdm_rate[i];
4345                 break;
4346         case WMI_RATE_PREAMBLE_HT:
4347                 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4348                         if (mask->control[band].ht_mcs[i])
4349                                 break;
4350
4351                 if (i == IEEE80211_HT_MCS_MASK_LEN)
4352                         return false;
4353
4354                 rate = ffs(mask->control[band].ht_mcs[i]) - 1;
4355                 nss = i;
4356                 break;
4357         case WMI_RATE_PREAMBLE_VHT:
4358                 for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4359                         if (mask->control[band].vht_mcs[i])
4360                                 break;
4361
4362                 if (i == NL80211_VHT_NSS_MAX)
4363                         return false;
4364
4365                 rate = ffs(mask->control[band].vht_mcs[i]) - 1;
4366                 nss = i;
4367                 break;
4368         }
4369
4370         *fixed_nss = nss + 1;
4371         nss <<= 4;
4372         pream <<= 6;
4373
4374         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac fixed rate pream 0x%02x nss 0x%02x rate 0x%02x\n",
4375                    pream, nss, rate);
4376
4377         *fixed_rate = pream | nss | rate;
4378
4379         return true;
4380 }
4381
4382 static bool ath10k_get_fixed_rate_nss(struct ath10k *ar,
4383                                       const struct cfg80211_bitrate_mask *mask,
4384                                       enum ieee80211_band band,
4385                                       u8 *fixed_rate,
4386                                       u8 *fixed_nss)
4387 {
4388         /* First check full NSS mask, if we can simply limit NSS */
4389         if (ath10k_bitrate_mask_nss(mask, band, fixed_nss))
4390                 return true;
4391
4392         /* Next Check single rate is set */
4393         return ath10k_bitrate_mask_rate(ar, mask, band, fixed_rate, fixed_nss);
4394 }
4395
4396 static int ath10k_set_fixed_rate_param(struct ath10k_vif *arvif,
4397                                        u8 fixed_rate,
4398                                        u8 fixed_nss,
4399                                        u8 force_sgi)
4400 {
4401         struct ath10k *ar = arvif->ar;
4402         u32 vdev_param;
4403         int ret = 0;
4404
4405         mutex_lock(&ar->conf_mutex);
4406
4407         if (arvif->fixed_rate == fixed_rate &&
4408             arvif->fixed_nss == fixed_nss &&
4409             arvif->force_sgi == force_sgi)
4410                 goto exit;
4411
4412         if (fixed_rate == WMI_FIXED_RATE_NONE)
4413                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac disable fixed bitrate mask\n");
4414
4415         if (force_sgi)
4416                 ath10k_dbg(ar, ATH10K_DBG_MAC, "mac force sgi\n");
4417
4418         vdev_param = ar->wmi.vdev_param->fixed_rate;
4419         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
4420                                         vdev_param, fixed_rate);
4421         if (ret) {
4422                 ath10k_warn(ar, "failed to set fixed rate param 0x%02x: %d\n",
4423                             fixed_rate, ret);
4424                 ret = -EINVAL;
4425                 goto exit;
4426         }
4427
4428         arvif->fixed_rate = fixed_rate;
4429
4430         vdev_param = ar->wmi.vdev_param->nss;
4431         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id,
4432                                         vdev_param, fixed_nss);
4433
4434         if (ret) {
4435                 ath10k_warn(ar, "failed to set fixed nss param %d: %d\n",
4436                             fixed_nss, ret);
4437                 ret = -EINVAL;
4438                 goto exit;
4439         }
4440
4441         arvif->fixed_nss = fixed_nss;
4442
4443         vdev_param = ar->wmi.vdev_param->sgi;
4444         ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
4445                                         force_sgi);
4446
4447         if (ret) {
4448                 ath10k_warn(ar, "failed to set sgi param %d: %d\n",
4449                             force_sgi, ret);
4450                 ret = -EINVAL;
4451                 goto exit;
4452         }
4453
4454         arvif->force_sgi = force_sgi;
4455
4456 exit:
4457         mutex_unlock(&ar->conf_mutex);
4458         return ret;
4459 }
4460
4461 static int ath10k_set_bitrate_mask(struct ieee80211_hw *hw,
4462                                    struct ieee80211_vif *vif,
4463                                    const struct cfg80211_bitrate_mask *mask)
4464 {
4465         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4466         struct ath10k *ar = arvif->ar;
4467         enum ieee80211_band band = ar->hw->conf.chandef.chan->band;
4468         u8 fixed_rate = WMI_FIXED_RATE_NONE;
4469         u8 fixed_nss = ar->num_rf_chains;
4470         u8 force_sgi;
4471
4472         if (ar->cfg_tx_chainmask)
4473                 fixed_nss = get_nss_from_chainmask(ar->cfg_tx_chainmask);
4474
4475         force_sgi = mask->control[band].gi;
4476         if (force_sgi == NL80211_TXRATE_FORCE_LGI)
4477                 return -EINVAL;
4478
4479         if (!ath10k_default_bitrate_mask(ar, band, mask)) {
4480                 if (!ath10k_get_fixed_rate_nss(ar, mask, band,
4481                                                &fixed_rate,
4482                                                &fixed_nss))
4483                         return -EINVAL;
4484         }
4485
4486         if (fixed_rate == WMI_FIXED_RATE_NONE && force_sgi) {
4487                 ath10k_warn(ar, "failed to force SGI usage for default rate settings\n");
4488                 return -EINVAL;
4489         }
4490
4491         return ath10k_set_fixed_rate_param(arvif, fixed_rate,
4492                                            fixed_nss, force_sgi);
4493 }
4494
4495 static void ath10k_sta_rc_update(struct ieee80211_hw *hw,
4496                                  struct ieee80211_vif *vif,
4497                                  struct ieee80211_sta *sta,
4498                                  u32 changed)
4499 {
4500         struct ath10k *ar = hw->priv;
4501         struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
4502         u32 bw, smps;
4503
4504         spin_lock_bh(&ar->data_lock);
4505
4506         ath10k_dbg(ar, ATH10K_DBG_MAC,
4507                    "mac sta rc update for %pM changed %08x bw %d nss %d smps %d\n",
4508                    sta->addr, changed, sta->bandwidth, sta->rx_nss,
4509                    sta->smps_mode);
4510
4511         if (changed & IEEE80211_RC_BW_CHANGED) {
4512                 bw = WMI_PEER_CHWIDTH_20MHZ;
4513
4514                 switch (sta->bandwidth) {
4515                 case IEEE80211_STA_RX_BW_20:
4516                         bw = WMI_PEER_CHWIDTH_20MHZ;
4517                         break;
4518                 case IEEE80211_STA_RX_BW_40:
4519                         bw = WMI_PEER_CHWIDTH_40MHZ;
4520                         break;
4521                 case IEEE80211_STA_RX_BW_80:
4522                         bw = WMI_PEER_CHWIDTH_80MHZ;
4523                         break;
4524                 case IEEE80211_STA_RX_BW_160:
4525                         ath10k_warn(ar, "Invalid bandwith %d in rc update for %pM\n",
4526                                     sta->bandwidth, sta->addr);
4527                         bw = WMI_PEER_CHWIDTH_20MHZ;
4528                         break;
4529                 }
4530
4531                 arsta->bw = bw;
4532         }
4533
4534         if (changed & IEEE80211_RC_NSS_CHANGED)
4535                 arsta->nss = sta->rx_nss;
4536
4537         if (changed & IEEE80211_RC_SMPS_CHANGED) {
4538                 smps = WMI_PEER_SMPS_PS_NONE;
4539
4540                 switch (sta->smps_mode) {
4541                 case IEEE80211_SMPS_AUTOMATIC:
4542                 case IEEE80211_SMPS_OFF:
4543                         smps = WMI_PEER_SMPS_PS_NONE;
4544                         break;
4545                 case IEEE80211_SMPS_STATIC:
4546                         smps = WMI_PEER_SMPS_STATIC;
4547                         break;
4548                 case IEEE80211_SMPS_DYNAMIC:
4549                         smps = WMI_PEER_SMPS_DYNAMIC;
4550                         break;
4551                 case IEEE80211_SMPS_NUM_MODES:
4552                         ath10k_warn(ar, "Invalid smps %d in sta rc update for %pM\n",
4553                                     sta->smps_mode, sta->addr);
4554                         smps = WMI_PEER_SMPS_PS_NONE;
4555                         break;
4556                 }
4557
4558                 arsta->smps = smps;
4559         }
4560
4561         arsta->changed |= changed;
4562
4563         spin_unlock_bh(&ar->data_lock);
4564
4565         ieee80211_queue_work(hw, &arsta->update_wk);
4566 }
4567
4568 static u64 ath10k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
4569 {
4570         /*
4571          * FIXME: Return 0 for time being. Need to figure out whether FW
4572          * has the API to fetch 64-bit local TSF
4573          */
4574
4575         return 0;
4576 }
4577
4578 static int ath10k_ampdu_action(struct ieee80211_hw *hw,
4579                                struct ieee80211_vif *vif,
4580                                enum ieee80211_ampdu_mlme_action action,
4581                                struct ieee80211_sta *sta, u16 tid, u16 *ssn,
4582                                u8 buf_size)
4583 {
4584         struct ath10k *ar = hw->priv;
4585         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4586
4587         ath10k_dbg(ar, ATH10K_DBG_MAC, "mac ampdu vdev_id %i sta %pM tid %hu action %d\n",
4588                    arvif->vdev_id, sta->addr, tid, action);
4589
4590         switch (action) {
4591         case IEEE80211_AMPDU_RX_START:
4592         case IEEE80211_AMPDU_RX_STOP:
4593                 /* HTT AddBa/DelBa events trigger mac80211 Rx BA session
4594                  * creation/removal. Do we need to verify this?
4595                  */
4596                 return 0;
4597         case IEEE80211_AMPDU_TX_START:
4598         case IEEE80211_AMPDU_TX_STOP_CONT:
4599         case IEEE80211_AMPDU_TX_STOP_FLUSH:
4600         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
4601         case IEEE80211_AMPDU_TX_OPERATIONAL:
4602                 /* Firmware offloads Tx aggregation entirely so deny mac80211
4603                  * Tx aggregation requests.
4604                  */
4605                 return -EOPNOTSUPP;
4606         }
4607
4608         return -EINVAL;
4609 }
4610
4611 static const struct ieee80211_ops ath10k_ops = {
4612         .tx                             = ath10k_tx,
4613         .start                          = ath10k_start,
4614         .stop                           = ath10k_stop,
4615         .config                         = ath10k_config,
4616         .add_interface                  = ath10k_add_interface,
4617         .remove_interface               = ath10k_remove_interface,
4618         .configure_filter               = ath10k_configure_filter,
4619         .bss_info_changed               = ath10k_bss_info_changed,
4620         .hw_scan                        = ath10k_hw_scan,
4621         .cancel_hw_scan                 = ath10k_cancel_hw_scan,
4622         .set_key                        = ath10k_set_key,
4623         .sta_state                      = ath10k_sta_state,
4624         .conf_tx                        = ath10k_conf_tx,
4625         .remain_on_channel              = ath10k_remain_on_channel,
4626         .cancel_remain_on_channel       = ath10k_cancel_remain_on_channel,
4627         .set_rts_threshold              = ath10k_set_rts_threshold,
4628         .set_frag_threshold             = ath10k_set_frag_threshold,
4629         .flush                          = ath10k_flush,
4630         .tx_last_beacon                 = ath10k_tx_last_beacon,
4631         .set_antenna                    = ath10k_set_antenna,
4632         .get_antenna                    = ath10k_get_antenna,
4633         .reconfig_complete              = ath10k_reconfig_complete,
4634         .get_survey                     = ath10k_get_survey,
4635         .set_bitrate_mask               = ath10k_set_bitrate_mask,
4636         .sta_rc_update                  = ath10k_sta_rc_update,
4637         .get_tsf                        = ath10k_get_tsf,
4638         .ampdu_action                   = ath10k_ampdu_action,
4639         .get_et_sset_count              = ath10k_debug_get_et_sset_count,
4640         .get_et_stats                   = ath10k_debug_get_et_stats,
4641         .get_et_strings                 = ath10k_debug_get_et_strings,
4642
4643         CFG80211_TESTMODE_CMD(ath10k_tm_cmd)
4644
4645 #ifdef CONFIG_PM
4646         .suspend                        = ath10k_suspend,
4647         .resume                         = ath10k_resume,
4648 #endif
4649 };
4650
4651 #define RATETAB_ENT(_rate, _rateid, _flags) { \
4652         .bitrate                = (_rate), \
4653         .flags                  = (_flags), \
4654         .hw_value               = (_rateid), \
4655 }
4656
4657 #define CHAN2G(_channel, _freq, _flags) { \
4658         .band                   = IEEE80211_BAND_2GHZ, \
4659         .hw_value               = (_channel), \
4660         .center_freq            = (_freq), \
4661         .flags                  = (_flags), \
4662         .max_antenna_gain       = 0, \
4663         .max_power              = 30, \
4664 }
4665
4666 #define CHAN5G(_channel, _freq, _flags) { \
4667         .band                   = IEEE80211_BAND_5GHZ, \
4668         .hw_value               = (_channel), \
4669         .center_freq            = (_freq), \
4670         .flags                  = (_flags), \
4671         .max_antenna_gain       = 0, \
4672         .max_power              = 30, \
4673 }
4674
4675 static const struct ieee80211_channel ath10k_2ghz_channels[] = {
4676         CHAN2G(1, 2412, 0),
4677         CHAN2G(2, 2417, 0),
4678         CHAN2G(3, 2422, 0),
4679         CHAN2G(4, 2427, 0),
4680         CHAN2G(5, 2432, 0),
4681         CHAN2G(6, 2437, 0),
4682         CHAN2G(7, 2442, 0),
4683         CHAN2G(8, 2447, 0),
4684         CHAN2G(9, 2452, 0),
4685         CHAN2G(10, 2457, 0),
4686         CHAN2G(11, 2462, 0),
4687         CHAN2G(12, 2467, 0),
4688         CHAN2G(13, 2472, 0),
4689         CHAN2G(14, 2484, 0),
4690 };
4691
4692 static const struct ieee80211_channel ath10k_5ghz_channels[] = {
4693         CHAN5G(36, 5180, 0),
4694         CHAN5G(40, 5200, 0),
4695         CHAN5G(44, 5220, 0),
4696         CHAN5G(48, 5240, 0),
4697         CHAN5G(52, 5260, 0),
4698         CHAN5G(56, 5280, 0),
4699         CHAN5G(60, 5300, 0),
4700         CHAN5G(64, 5320, 0),
4701         CHAN5G(100, 5500, 0),
4702         CHAN5G(104, 5520, 0),
4703         CHAN5G(108, 5540, 0),
4704         CHAN5G(112, 5560, 0),
4705         CHAN5G(116, 5580, 0),
4706         CHAN5G(120, 5600, 0),
4707         CHAN5G(124, 5620, 0),
4708         CHAN5G(128, 5640, 0),
4709         CHAN5G(132, 5660, 0),
4710         CHAN5G(136, 5680, 0),
4711         CHAN5G(140, 5700, 0),
4712         CHAN5G(149, 5745, 0),
4713         CHAN5G(153, 5765, 0),
4714         CHAN5G(157, 5785, 0),
4715         CHAN5G(161, 5805, 0),
4716         CHAN5G(165, 5825, 0),
4717 };
4718
4719 static struct ieee80211_rate ath10k_rates[] = {
4720         /* CCK */
4721         RATETAB_ENT(10,  0x82, 0),
4722         RATETAB_ENT(20,  0x84, 0),
4723         RATETAB_ENT(55,  0x8b, 0),
4724         RATETAB_ENT(110, 0x96, 0),
4725         /* OFDM */
4726         RATETAB_ENT(60,  0x0c, 0),
4727         RATETAB_ENT(90,  0x12, 0),
4728         RATETAB_ENT(120, 0x18, 0),
4729         RATETAB_ENT(180, 0x24, 0),
4730         RATETAB_ENT(240, 0x30, 0),
4731         RATETAB_ENT(360, 0x48, 0),
4732         RATETAB_ENT(480, 0x60, 0),
4733         RATETAB_ENT(540, 0x6c, 0),
4734 };
4735
4736 #define ath10k_a_rates (ath10k_rates + 4)
4737 #define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4)
4738 #define ath10k_g_rates (ath10k_rates + 0)
4739 #define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates))
4740
4741 struct ath10k *ath10k_mac_create(size_t priv_size)
4742 {
4743         struct ieee80211_hw *hw;
4744         struct ath10k *ar;
4745
4746         hw = ieee80211_alloc_hw(sizeof(struct ath10k) + priv_size, &ath10k_ops);
4747         if (!hw)
4748                 return NULL;
4749
4750         ar = hw->priv;
4751         ar->hw = hw;
4752
4753         return ar;
4754 }
4755
4756 void ath10k_mac_destroy(struct ath10k *ar)
4757 {
4758         ieee80211_free_hw(ar->hw);
4759 }
4760
4761 static const struct ieee80211_iface_limit ath10k_if_limits[] = {
4762         {
4763         .max    = 8,
4764         .types  = BIT(NL80211_IFTYPE_STATION)
4765                 | BIT(NL80211_IFTYPE_P2P_CLIENT)
4766         },
4767         {
4768         .max    = 3,
4769         .types  = BIT(NL80211_IFTYPE_P2P_GO)
4770         },
4771         {
4772         .max    = 7,
4773         .types  = BIT(NL80211_IFTYPE_AP)
4774         },
4775 };
4776
4777 static const struct ieee80211_iface_limit ath10k_10x_if_limits[] = {
4778         {
4779         .max    = 8,
4780         .types  = BIT(NL80211_IFTYPE_AP)
4781         },
4782 };
4783
4784 static const struct ieee80211_iface_combination ath10k_if_comb[] = {
4785         {
4786                 .limits = ath10k_if_limits,
4787                 .n_limits = ARRAY_SIZE(ath10k_if_limits),
4788                 .max_interfaces = 8,
4789                 .num_different_channels = 1,
4790                 .beacon_int_infra_match = true,
4791         },
4792 };
4793
4794 static const struct ieee80211_iface_combination ath10k_10x_if_comb[] = {
4795         {
4796                 .limits = ath10k_10x_if_limits,
4797                 .n_limits = ARRAY_SIZE(ath10k_10x_if_limits),
4798                 .max_interfaces = 8,
4799                 .num_different_channels = 1,
4800                 .beacon_int_infra_match = true,
4801 #ifdef CONFIG_ATH10K_DFS_CERTIFIED
4802                 .radar_detect_widths =  BIT(NL80211_CHAN_WIDTH_20_NOHT) |
4803                                         BIT(NL80211_CHAN_WIDTH_20) |
4804                                         BIT(NL80211_CHAN_WIDTH_40) |
4805                                         BIT(NL80211_CHAN_WIDTH_80),
4806 #endif
4807         },
4808 };
4809
4810 static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar)
4811 {
4812         struct ieee80211_sta_vht_cap vht_cap = {0};
4813         u16 mcs_map;
4814         int i;
4815
4816         vht_cap.vht_supported = 1;
4817         vht_cap.cap = ar->vht_cap_info;
4818
4819         mcs_map = 0;
4820         for (i = 0; i < 8; i++) {
4821                 if (i < ar->num_rf_chains)
4822                         mcs_map |= IEEE80211_VHT_MCS_SUPPORT_0_9 << (i*2);
4823                 else
4824                         mcs_map |= IEEE80211_VHT_MCS_NOT_SUPPORTED << (i*2);
4825         }
4826
4827         vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
4828         vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
4829
4830         return vht_cap;
4831 }
4832
4833 static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar)
4834 {
4835         int i;
4836         struct ieee80211_sta_ht_cap ht_cap = {0};
4837
4838         if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED))
4839                 return ht_cap;
4840
4841         ht_cap.ht_supported = 1;
4842         ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
4843         ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8;
4844         ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
4845         ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40;
4846         ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT;
4847
4848         if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI)
4849                 ht_cap.cap |= IEEE80211_HT_CAP_SGI_20;
4850
4851         if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI)
4852                 ht_cap.cap |= IEEE80211_HT_CAP_SGI_40;
4853
4854         if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) {
4855                 u32 smps;
4856
4857                 smps   = WLAN_HT_CAP_SM_PS_DYNAMIC;
4858                 smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT;
4859
4860                 ht_cap.cap |= smps;
4861         }
4862
4863         if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC)
4864                 ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC;
4865
4866         if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) {
4867                 u32 stbc;
4868
4869                 stbc   = ar->ht_cap_info;
4870                 stbc  &= WMI_HT_CAP_RX_STBC;
4871                 stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT;
4872                 stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT;
4873                 stbc  &= IEEE80211_HT_CAP_RX_STBC;
4874
4875                 ht_cap.cap |= stbc;
4876         }
4877
4878         if (ar->ht_cap_info & WMI_HT_CAP_LDPC)
4879                 ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;
4880
4881         if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT)
4882                 ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT;
4883
4884         /* max AMSDU is implicitly taken from vht_cap_info */
4885         if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK)
4886                 ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU;
4887
4888         for (i = 0; i < ar->num_rf_chains; i++)
4889                 ht_cap.mcs.rx_mask[i] = 0xFF;
4890
4891         ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED;
4892
4893         return ht_cap;
4894 }
4895
4896 static void ath10k_get_arvif_iter(void *data, u8 *mac,
4897                                   struct ieee80211_vif *vif)
4898 {
4899         struct ath10k_vif_iter *arvif_iter = data;
4900         struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
4901
4902         if (arvif->vdev_id == arvif_iter->vdev_id)
4903                 arvif_iter->arvif = arvif;
4904 }
4905
4906 struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id)
4907 {
4908         struct ath10k_vif_iter arvif_iter;
4909         u32 flags;
4910
4911         memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter));
4912         arvif_iter.vdev_id = vdev_id;
4913
4914         flags = IEEE80211_IFACE_ITER_RESUME_ALL;
4915         ieee80211_iterate_active_interfaces_atomic(ar->hw,
4916                                                    flags,
4917                                                    ath10k_get_arvif_iter,
4918                                                    &arvif_iter);
4919         if (!arvif_iter.arvif) {
4920                 ath10k_warn(ar, "No VIF found for vdev %d\n", vdev_id);
4921                 return NULL;
4922         }
4923
4924         return arvif_iter.arvif;
4925 }
4926
4927 int ath10k_mac_register(struct ath10k *ar)
4928 {
4929         struct ieee80211_supported_band *band;
4930         struct ieee80211_sta_vht_cap vht_cap;
4931         struct ieee80211_sta_ht_cap ht_cap;
4932         void *channels;
4933         int ret;
4934
4935         SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr);
4936
4937         SET_IEEE80211_DEV(ar->hw, ar->dev);
4938
4939         ht_cap = ath10k_get_ht_cap(ar);
4940         vht_cap = ath10k_create_vht_cap(ar);
4941
4942         if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) {
4943                 channels = kmemdup(ath10k_2ghz_channels,
4944                                    sizeof(ath10k_2ghz_channels),
4945                                    GFP_KERNEL);
4946                 if (!channels) {
4947                         ret = -ENOMEM;
4948                         goto err_free;
4949                 }
4950
4951                 band = &ar->mac.sbands[IEEE80211_BAND_2GHZ];
4952                 band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels);
4953                 band->channels = channels;
4954                 band->n_bitrates = ath10k_g_rates_size;
4955                 band->bitrates = ath10k_g_rates;
4956                 band->ht_cap = ht_cap;
4957
4958                 /* vht is not supported in 2.4 GHz */
4959
4960                 ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band;
4961         }
4962
4963         if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) {
4964                 channels = kmemdup(ath10k_5ghz_channels,
4965                                    sizeof(ath10k_5ghz_channels),
4966                                    GFP_KERNEL);
4967                 if (!channels) {
4968                         ret = -ENOMEM;
4969                         goto err_free;
4970                 }
4971
4972                 band = &ar->mac.sbands[IEEE80211_BAND_5GHZ];
4973                 band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels);
4974                 band->channels = channels;
4975                 band->n_bitrates = ath10k_a_rates_size;
4976                 band->bitrates = ath10k_a_rates;
4977                 band->ht_cap = ht_cap;
4978                 band->vht_cap = vht_cap;
4979                 ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band;
4980         }
4981
4982         ar->hw->wiphy->interface_modes =
4983                 BIT(NL80211_IFTYPE_STATION) |
4984                 BIT(NL80211_IFTYPE_AP);
4985
4986         ar->hw->wiphy->available_antennas_rx = ar->supp_rx_chainmask;
4987         ar->hw->wiphy->available_antennas_tx = ar->supp_tx_chainmask;
4988
4989         if (!test_bit(ATH10K_FW_FEATURE_NO_P2P, ar->fw_features))
4990                 ar->hw->wiphy->interface_modes |=
4991                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
4992                         BIT(NL80211_IFTYPE_P2P_GO);
4993
4994         ar->hw->flags = IEEE80211_HW_SIGNAL_DBM |
4995                         IEEE80211_HW_SUPPORTS_PS |
4996                         IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
4997                         IEEE80211_HW_SUPPORTS_UAPSD |
4998                         IEEE80211_HW_MFP_CAPABLE |
4999                         IEEE80211_HW_REPORTS_TX_ACK_STATUS |
5000                         IEEE80211_HW_HAS_RATE_CONTROL |
5001                         IEEE80211_HW_AP_LINK_PS |
5002                         IEEE80211_HW_SPECTRUM_MGMT;
5003
5004         ar->hw->wiphy->features |= NL80211_FEATURE_STATIC_SMPS;
5005
5006         if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS)
5007                 ar->hw->wiphy->features |= NL80211_FEATURE_DYNAMIC_SMPS;
5008
5009         if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) {
5010                 ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION;
5011                 ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW;
5012         }
5013
5014         ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID;
5015         ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN;
5016
5017         ar->hw->vif_data_size = sizeof(struct ath10k_vif);
5018         ar->hw->sta_data_size = sizeof(struct ath10k_sta);
5019
5020         ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL;
5021
5022         ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL;
5023         ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
5024         ar->hw->wiphy->max_remain_on_channel_duration = 5000;
5025
5026         ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
5027         ar->hw->wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
5028
5029         /*
5030          * on LL hardware queues are managed entirely by the FW
5031          * so we only advertise to mac we can do the queues thing
5032          */
5033         ar->hw->queues = 4;
5034
5035         if (test_bit(ATH10K_FW_FEATURE_WMI_10X, ar->fw_features)) {
5036                 ar->hw->wiphy->iface_combinations = ath10k_10x_if_comb;
5037                 ar->hw->wiphy->n_iface_combinations =
5038                         ARRAY_SIZE(ath10k_10x_if_comb);
5039         } else {
5040                 ar->hw->wiphy->iface_combinations = ath10k_if_comb;
5041                 ar->hw->wiphy->n_iface_combinations =
5042                         ARRAY_SIZE(ath10k_if_comb);
5043
5044                 ar->hw->wiphy->interface_modes |= BIT(NL80211_IFTYPE_ADHOC);
5045         }
5046
5047         ar->hw->netdev_features = NETIF_F_HW_CSUM;
5048
5049         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
5050                 /* Init ath dfs pattern detector */
5051                 ar->ath_common.debug_mask = ATH_DBG_DFS;
5052                 ar->dfs_detector = dfs_pattern_detector_init(&ar->ath_common,
5053                                                              NL80211_DFS_UNSET);
5054
5055                 if (!ar->dfs_detector)
5056                         ath10k_warn(ar, "failed to initialise DFS pattern detector\n");
5057         }
5058
5059         ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy,
5060                             ath10k_reg_notifier);
5061         if (ret) {
5062                 ath10k_err(ar, "failed to initialise regulatory: %i\n", ret);
5063                 goto err_free;
5064         }
5065
5066         ret = ieee80211_register_hw(ar->hw);
5067         if (ret) {
5068                 ath10k_err(ar, "failed to register ieee80211: %d\n", ret);
5069                 goto err_free;
5070         }
5071
5072         if (!ath_is_world_regd(&ar->ath_common.regulatory)) {
5073                 ret = regulatory_hint(ar->hw->wiphy,
5074                                       ar->ath_common.regulatory.alpha2);
5075                 if (ret)
5076                         goto err_unregister;
5077         }
5078
5079         return 0;
5080
5081 err_unregister:
5082         ieee80211_unregister_hw(ar->hw);
5083 err_free:
5084         kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
5085         kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
5086
5087         return ret;
5088 }
5089
5090 void ath10k_mac_unregister(struct ath10k *ar)
5091 {
5092         ieee80211_unregister_hw(ar->hw);
5093
5094         if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED) && ar->dfs_detector)
5095                 ar->dfs_detector->exit(ar->dfs_detector);
5096
5097         kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels);
5098         kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels);
5099
5100         SET_IEEE80211_DEV(ar->hw, NULL);
5101 }