drivers/net/wireless/st/cw1200/sta.c

   1 /*
   2  * Mac80211 STA API for ST-Ericsson CW1200 drivers
   3  *
   4  * Copyright (c) 2010, ST-Ericsson
   5  * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/vmalloc.h>
  13 #include <linux/sched.h>
  14 #include <linux/firmware.h>
  15 #include <linux/module.h>
  16 #include <linux/etherdevice.h>
  17
  18 #include "cw1200.h"
  19 #include "sta.h"
  20 #include "fwio.h"
  21 #include "bh.h"
  22 #include "debug.h"
  23
  24 #ifndef ERP_INFO_BYTE_OFFSET
  25 #define ERP_INFO_BYTE_OFFSET 2
  26 #endif
  27
  28 static void cw1200_do_join(struct cw1200_common *priv);
  29 static void cw1200_do_unjoin(struct cw1200_common *priv);
  30
  31 static int cw1200_upload_beacon(struct cw1200_common *priv);
  32 static int cw1200_upload_pspoll(struct cw1200_common *priv);
  33 static int cw1200_upload_null(struct cw1200_common *priv);
  34 static int cw1200_upload_qosnull(struct cw1200_common *priv);
  35 static int cw1200_start_ap(struct cw1200_common *priv);
  36 static int cw1200_update_beaconing(struct cw1200_common *priv);
  37 static int cw1200_enable_beaconing(struct cw1200_common *priv,
  38                                    bool enable);
  39 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
  40                                 struct ieee80211_vif *vif,
  41                                 enum sta_notify_cmd notify_cmd,
  42                                 int link_id);
  43 static int __cw1200_flush(struct cw1200_common *priv, bool drop);
  44
  45 static inline void __cw1200_free_event_queue(struct list_head *list)
  46 {
  47         struct cw1200_wsm_event *event, *tmp;
  48         list_for_each_entry_safe(event, tmp, list, link) {
  49                 list_del(&event->link);
  50                 kfree(event);
  51         }
  52 }
  53
  54 /* ******************************************************************** */
  55 /* STA API                                                              */
  56
  57 int cw1200_start(struct ieee80211_hw *dev)
  58 {
  59         struct cw1200_common *priv = dev->priv;
  60         int ret = 0;
  61
  62         cw1200_pm_stay_awake(&priv->pm_state, HZ);
  63
  64         mutex_lock(&priv->conf_mutex);
  65
  66         /* default EDCA */
  67         WSM_EDCA_SET(&priv->edca, 0, 0x0002, 0x0003, 0x0007, 47, 0xc8, false);
  68         WSM_EDCA_SET(&priv->edca, 1, 0x0002, 0x0007, 0x000f, 94, 0xc8, false);
  69         WSM_EDCA_SET(&priv->edca, 2, 0x0003, 0x000f, 0x03ff, 0, 0xc8, false);
  70         WSM_EDCA_SET(&priv->edca, 3, 0x0007, 0x000f, 0x03ff, 0, 0xc8, false);
  71         ret = wsm_set_edca_params(priv, &priv->edca);
  72         if (ret)
  73                 goto out;
  74
  75         ret = cw1200_set_uapsd_param(priv, &priv->edca);
  76         if (ret)
  77                 goto out;
  78
  79         priv->setbssparams_done = false;
  80
  81         memcpy(priv->mac_addr, dev->wiphy->perm_addr, ETH_ALEN);
  82         priv->mode = NL80211_IFTYPE_MONITOR;
  83         priv->wep_default_key_id = -1;
  84
  85         priv->cqm_beacon_loss_count = 10;
  86
  87         ret = cw1200_setup_mac(priv);
  88         if (ret)
  89                 goto out;
  90
  91 out:
  92         mutex_unlock(&priv->conf_mutex);
  93         return ret;
  94 }
  95
  96 void cw1200_stop(struct ieee80211_hw *dev)
  97 {
  98         struct cw1200_common *priv = dev->priv;
  99         LIST_HEAD(list);
 100         int i;
 101
 102         wsm_lock_tx(priv);
 103
 104         while (down_trylock(&priv->scan.lock)) {
 105                 /* Scan is in progress. Force it to stop. */
 106                 priv->scan.req = NULL;
 107                 schedule();
 108         }
 109         up(&priv->scan.lock);
 110
 111         cancel_delayed_work_sync(&priv->scan.probe_work);
 112         cancel_delayed_work_sync(&priv->scan.timeout);
 113         cancel_delayed_work_sync(&priv->clear_recent_scan_work);
 114         cancel_delayed_work_sync(&priv->join_timeout);
 115         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
 116         cancel_work_sync(&priv->unjoin_work);
 117         cancel_delayed_work_sync(&priv->link_id_gc_work);
 118         flush_workqueue(priv->workqueue);
 119         del_timer_sync(&priv->mcast_timeout);
 120         mutex_lock(&priv->conf_mutex);
 121         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
 122         priv->listening = false;
 123
 124         spin_lock(&priv->event_queue_lock);
 125         list_splice_init(&priv->event_queue, &list);
 126         spin_unlock(&priv->event_queue_lock);
 127         __cw1200_free_event_queue(&list);
 128
 129
 130         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 131         priv->join_pending = false;
 132
 133         for (i = 0; i < 4; i++)
 134                 cw1200_queue_clear(&priv->tx_queue[i]);
 135         mutex_unlock(&priv->conf_mutex);
 136         tx_policy_clean(priv);
 137
 138         /* HACK! */
 139         if (atomic_xchg(&priv->tx_lock, 1) != 1)
 140                 pr_debug("[STA] TX is force-unlocked due to stop request.\n");
 141
 142         wsm_unlock_tx(priv);
 143         atomic_xchg(&priv->tx_lock, 0); /* for recovery to work */
 144 }
 145
 146 static int cw1200_bssloss_mitigation = 1;
 147 module_param(cw1200_bssloss_mitigation, int, 0644);
 148 MODULE_PARM_DESC(cw1200_bssloss_mitigation, "BSS Loss mitigation. 0 == disabled, 1 == enabled (default)");
 149
 150
 151 void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
 152                              int init, int good, int bad)
 153 {
 154         int tx = 0;
 155
 156         priv->delayed_link_loss = 0;
 157         cancel_work_sync(&priv->bss_params_work);
 158
 159         pr_debug("[STA] CQM BSSLOSS_SM: state: %d init %d good %d bad: %d txlock: %d uj: %d\n",
 160                  priv->bss_loss_state,
 161                  init, good, bad,
 162                  atomic_read(&priv->tx_lock),
 163                  priv->delayed_unjoin);
 164
 165         /* If we have a pending unjoin */
 166         if (priv->delayed_unjoin)
 167                 return;
 168
 169         if (init) {
 170                 queue_delayed_work(priv->workqueue,
 171                                    &priv->bss_loss_work,
 172                                    HZ);
 173                 priv->bss_loss_state = 0;
 174
 175                 /* Skip the confimration procedure in P2P case */
 176                 if (!priv->vif->p2p && !atomic_read(&priv->tx_lock))
 177                         tx = 1;
 178         } else if (good) {
 179                 cancel_delayed_work_sync(&priv->bss_loss_work);
 180                 priv->bss_loss_state = 0;
 181                 queue_work(priv->workqueue, &priv->bss_params_work);
 182         } else if (bad) {
 183                 /* XXX Should we just keep going until we time out? */
 184                 if (priv->bss_loss_state < 3)
 185                         tx = 1;
 186         } else {
 187                 cancel_delayed_work_sync(&priv->bss_loss_work);
 188                 priv->bss_loss_state = 0;
 189         }
 190
 191         /* Bypass mitigation if it's disabled */
 192         if (!cw1200_bssloss_mitigation)
 193                 tx = 0;
 194
 195         /* Spit out a NULL packet to our AP if necessary */
 196         if (tx) {
 197                 struct sk_buff *skb;
 198
 199                 priv->bss_loss_state++;
 200
 201                 skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false);
 202                 WARN_ON(!skb);
 203                 if (skb)
 204                         cw1200_tx(priv->hw, NULL, skb);
 205         }
 206 }
 207
 208 int cw1200_add_interface(struct ieee80211_hw *dev,
 209                          struct ieee80211_vif *vif)
 210 {
 211         int ret;
 212         struct cw1200_common *priv = dev->priv;
 213         /* __le32 auto_calibration_mode = __cpu_to_le32(1); */
 214
 215         vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
 216                              IEEE80211_VIF_SUPPORTS_UAPSD |
 217                              IEEE80211_VIF_SUPPORTS_CQM_RSSI;
 218
 219         mutex_lock(&priv->conf_mutex);
 220
 221         if (priv->mode != NL80211_IFTYPE_MONITOR) {
 222                 mutex_unlock(&priv->conf_mutex);
 223                 return -EOPNOTSUPP;
 224         }
 225
 226         switch (vif->type) {
 227         case NL80211_IFTYPE_STATION:
 228         case NL80211_IFTYPE_ADHOC:
 229         case NL80211_IFTYPE_MESH_POINT:
 230         case NL80211_IFTYPE_AP:
 231                 priv->mode = vif->type;
 232                 break;
 233         default:
 234                 mutex_unlock(&priv->conf_mutex);
 235                 return -EOPNOTSUPP;
 236         }
 237
 238         priv->vif = vif;
 239         memcpy(priv->mac_addr, vif->addr, ETH_ALEN);
 240         ret = cw1200_setup_mac(priv);
 241         /* Enable auto-calibration */
 242         /* Exception in subsequent channel switch; disabled.
 243          *  wsm_write_mib(priv, WSM_MIB_ID_SET_AUTO_CALIBRATION_MODE,
 244          *      &auto_calibration_mode, sizeof(auto_calibration_mode));
 245         */
 246
 247         mutex_unlock(&priv->conf_mutex);
 248         return ret;
 249 }
 250
 251 void cw1200_remove_interface(struct ieee80211_hw *dev,
 252                              struct ieee80211_vif *vif)
 253 {
 254         struct cw1200_common *priv = dev->priv;
 255         struct wsm_reset reset = {
 256                 .reset_statistics = true,
 257         };
 258         int i;
 259
 260         mutex_lock(&priv->conf_mutex);
 261         switch (priv->join_status) {
 262         case CW1200_JOIN_STATUS_JOINING:
 263         case CW1200_JOIN_STATUS_PRE_STA:
 264         case CW1200_JOIN_STATUS_STA:
 265         case CW1200_JOIN_STATUS_IBSS:
 266                 wsm_lock_tx(priv);
 267                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
 268                         wsm_unlock_tx(priv);
 269                 break;
 270         case CW1200_JOIN_STATUS_AP:
 271                 for (i = 0; priv->link_id_map; ++i) {
 272                         if (priv->link_id_map & BIT(i)) {
 273                                 reset.link_id = i;
 274                                 wsm_reset(priv, &reset);
 275                                 priv->link_id_map &= ~BIT(i);
 276                         }
 277                 }
 278                 memset(priv->link_id_db, 0, sizeof(priv->link_id_db));
 279                 priv->sta_asleep_mask = 0;
 280                 priv->enable_beacon = false;
 281                 priv->tx_multicast = false;
 282                 priv->aid0_bit_set = false;
 283                 priv->buffered_multicasts = false;
 284                 priv->pspoll_mask = 0;
 285                 reset.link_id = 0;
 286                 wsm_reset(priv, &reset);
 287                 break;
 288         case CW1200_JOIN_STATUS_MONITOR:
 289                 cw1200_update_listening(priv, false);
 290                 break;
 291         default:
 292                 break;
 293         }
 294         priv->vif = NULL;
 295         priv->mode = NL80211_IFTYPE_MONITOR;
 296         eth_zero_addr(priv->mac_addr);
 297         memset(&priv->p2p_ps_modeinfo, 0, sizeof(priv->p2p_ps_modeinfo));
 298         cw1200_free_keys(priv);
 299         cw1200_setup_mac(priv);
 300         priv->listening = false;
 301         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 302         if (!__cw1200_flush(priv, true))
 303                 wsm_unlock_tx(priv);
 304
 305         mutex_unlock(&priv->conf_mutex);
 306 }
 307
 308 int cw1200_change_interface(struct ieee80211_hw *dev,
 309                             struct ieee80211_vif *vif,
 310                             enum nl80211_iftype new_type,
 311                             bool p2p)
 312 {
 313         int ret = 0;
 314         pr_debug("change_interface new: %d (%d), old: %d (%d)\n", new_type,
 315                  p2p, vif->type, vif->p2p);
 316
 317         if (new_type != vif->type || vif->p2p != p2p) {
 318                 cw1200_remove_interface(dev, vif);
 319                 vif->type = new_type;
 320                 vif->p2p = p2p;
 321                 ret = cw1200_add_interface(dev, vif);
 322         }
 323
 324         return ret;
 325 }
 326
 327 int cw1200_config(struct ieee80211_hw *dev, u32 changed)
 328 {
 329         int ret = 0;
 330         struct cw1200_common *priv = dev->priv;
 331         struct ieee80211_conf *conf = &dev->conf;
 332
 333         pr_debug("CONFIG CHANGED:  %08x\n", changed);
 334
 335         down(&priv->scan.lock);
 336         mutex_lock(&priv->conf_mutex);
 337         /* TODO: IEEE80211_CONF_CHANGE_QOS */
 338         /* TODO: IEEE80211_CONF_CHANGE_LISTEN_INTERVAL */
 339
 340         if (changed & IEEE80211_CONF_CHANGE_POWER) {
 341                 priv->output_power = conf->power_level;
 342                 pr_debug("[STA] TX power: %d\n", priv->output_power);
 343                 wsm_set_output_power(priv, priv->output_power * 10);
 344         }
 345
 346         if ((changed & IEEE80211_CONF_CHANGE_CHANNEL) &&
 347             (priv->channel != conf->chandef.chan)) {
 348                 struct ieee80211_channel *ch = conf->chandef.chan;
 349                 struct wsm_switch_channel channel = {
 350                         .channel_number = ch->hw_value,
 351                 };
 352                 pr_debug("[STA] Freq %d (wsm ch: %d).\n",
 353                          ch->center_freq, ch->hw_value);
 354
 355                 /* __cw1200_flush() implicitly locks tx, if successful */
 356                 if (!__cw1200_flush(priv, false)) {
 357                         if (!wsm_switch_channel(priv, &channel)) {
 358                                 ret = wait_event_timeout(priv->channel_switch_done,
 359                                                          !priv->channel_switch_in_progress,
 360                                                          3 * HZ);
 361                                 if (ret) {
 362                                         /* Already unlocks if successful */
 363                                         priv->channel = ch;
 364                                         ret = 0;
 365                                 } else {
 366                                         ret = -ETIMEDOUT;
 367                                 }
 368                         } else {
 369                                 /* Unlock if switch channel fails */
 370                                 wsm_unlock_tx(priv);
 371                         }
 372                 }
 373         }
 374
 375         if (changed & IEEE80211_CONF_CHANGE_PS) {
 376                 if (!(conf->flags & IEEE80211_CONF_PS))
 377                         priv->powersave_mode.mode = WSM_PSM_ACTIVE;
 378                 else if (conf->dynamic_ps_timeout <= 0)
 379                         priv->powersave_mode.mode = WSM_PSM_PS;
 380                 else
 381                         priv->powersave_mode.mode = WSM_PSM_FAST_PS;
 382
 383                 /* Firmware requires that value for this 1-byte field must
 384                  * be specified in units of 500us. Values above the 128ms
 385                  * threshold are not supported.
 386                  */
 387                 if (conf->dynamic_ps_timeout >= 0x80)
 388                         priv->powersave_mode.fast_psm_idle_period = 0xFF;
 389                 else
 390                         priv->powersave_mode.fast_psm_idle_period =
 391                                         conf->dynamic_ps_timeout << 1;
 392
 393                 if (priv->join_status == CW1200_JOIN_STATUS_STA &&
 394                     priv->bss_params.aid)
 395                         cw1200_set_pm(priv, &priv->powersave_mode);
 396         }
 397
 398         if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
 399                 /* TBD: It looks like it's transparent
 400                  * there's a monitor interface present -- use this
 401                  * to determine for example whether to calculate
 402                  * timestamps for packets or not, do not use instead
 403                  * of filter flags!
 404                  */
 405         }
 406
 407         if (changed & IEEE80211_CONF_CHANGE_IDLE) {
 408                 struct wsm_operational_mode mode = {
 409                         .power_mode = cw1200_power_mode,
 410                         .disable_more_flag_usage = true,
 411                 };
 412
 413                 wsm_lock_tx(priv);
 414                 /* Disable p2p-dev mode forced by TX request */
 415                 if ((priv->join_status == CW1200_JOIN_STATUS_MONITOR) &&
 416                     (conf->flags & IEEE80211_CONF_IDLE) &&
 417                     !priv->listening) {
 418                         cw1200_disable_listening(priv);
 419                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
 420                 }
 421                 wsm_set_operational_mode(priv, &mode);
 422                 wsm_unlock_tx(priv);
 423         }
 424
 425         if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
 426                 pr_debug("[STA] Retry limits: %d (long), %d (short).\n",
 427                          conf->long_frame_max_tx_count,
 428                          conf->short_frame_max_tx_count);
 429                 spin_lock_bh(&priv->tx_policy_cache.lock);
 430                 priv->long_frame_max_tx_count = conf->long_frame_max_tx_count;
 431                 priv->short_frame_max_tx_count =
 432                         (conf->short_frame_max_tx_count < 0x0F) ?
 433                         conf->short_frame_max_tx_count : 0x0F;
 434                 priv->hw->max_rate_tries = priv->short_frame_max_tx_count;
 435                 spin_unlock_bh(&priv->tx_policy_cache.lock);
 436         }
 437         mutex_unlock(&priv->conf_mutex);
 438         up(&priv->scan.lock);
 439         return ret;
 440 }
 441
 442 void cw1200_update_filtering(struct cw1200_common *priv)
 443 {
 444         int ret;
 445         bool bssid_filtering = !priv->rx_filter.bssid;
 446         bool is_p2p = priv->vif && priv->vif->p2p;
 447         bool is_sta = priv->vif && NL80211_IFTYPE_STATION == priv->vif->type;
 448
 449         static struct wsm_beacon_filter_control bf_ctrl;
 450         static struct wsm_mib_beacon_filter_table bf_tbl = {
 451                 .entry[0].ie_id = WLAN_EID_VENDOR_SPECIFIC,
 452                 .entry[0].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 453                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 454                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 455                 .entry[0].oui[0] = 0x50,
 456                 .entry[0].oui[1] = 0x6F,
 457                 .entry[0].oui[2] = 0x9A,
 458                 .entry[1].ie_id = WLAN_EID_HT_OPERATION,
 459                 .entry[1].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 460                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 461                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 462                 .entry[2].ie_id = WLAN_EID_ERP_INFO,
 463                 .entry[2].flags = WSM_BEACON_FILTER_IE_HAS_CHANGED |
 464                                         WSM_BEACON_FILTER_IE_NO_LONGER_PRESENT |
 465                                         WSM_BEACON_FILTER_IE_HAS_APPEARED,
 466         };
 467
 468         if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE)
 469                 return;
 470         else if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
 471                 bssid_filtering = false;
 472
 473         if (priv->disable_beacon_filter) {
 474                 bf_ctrl.enabled = 0;
 475                 bf_ctrl.bcn_count = 1;
 476                 bf_tbl.num = __cpu_to_le32(0);
 477         } else if (is_p2p || !is_sta) {
 478                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE |
 479                         WSM_BEACON_FILTER_AUTO_ERP;
 480                 bf_ctrl.bcn_count = 0;
 481                 bf_tbl.num = __cpu_to_le32(2);
 482         } else {
 483                 bf_ctrl.enabled = WSM_BEACON_FILTER_ENABLE;
 484                 bf_ctrl.bcn_count = 0;
 485                 bf_tbl.num = __cpu_to_le32(3);
 486         }
 487
 488         /* When acting as p2p client being connected to p2p GO, in order to
 489          * receive frames from a different p2p device, turn off bssid filter.
 490          *
 491          * WARNING: FW dependency!
 492          * This can only be used with FW WSM371 and its successors.
 493          * In that FW version even with bssid filter turned off,
 494          * device will block most of the unwanted frames.
 495          */
 496         if (is_p2p)
 497                 bssid_filtering = false;
 498
 499         ret = wsm_set_rx_filter(priv, &priv->rx_filter);
 500         if (!ret)
 501                 ret = wsm_set_beacon_filter_table(priv, &bf_tbl);
 502         if (!ret)
 503                 ret = wsm_beacon_filter_control(priv, &bf_ctrl);
 504         if (!ret)
 505                 ret = wsm_set_bssid_filtering(priv, bssid_filtering);
 506         if (!ret)
 507                 ret = wsm_set_multicast_filter(priv, &priv->multicast_filter);
 508         if (ret)
 509                 wiphy_err(priv->hw->wiphy,
 510                           "Update filtering failed: %d.\n", ret);
 511         return;
 512 }
 513
 514 void cw1200_update_filtering_work(struct work_struct *work)
 515 {
 516         struct cw1200_common *priv =
 517                 container_of(work, struct cw1200_common,
 518                              update_filtering_work);
 519
 520         cw1200_update_filtering(priv);
 521 }
 522
 523 void cw1200_set_beacon_wakeup_period_work(struct work_struct *work)
 524 {
 525         struct cw1200_common *priv =
 526                 container_of(work, struct cw1200_common,
 527                              set_beacon_wakeup_period_work);
 528
 529         wsm_set_beacon_wakeup_period(priv,
 530                                      priv->beacon_int * priv->join_dtim_period >
 531                                      MAX_BEACON_SKIP_TIME_MS ? 1 :
 532                                      priv->join_dtim_period, 0);
 533 }
 534
 535 u64 cw1200_prepare_multicast(struct ieee80211_hw *hw,
 536                              struct netdev_hw_addr_list *mc_list)
 537 {
 538         static u8 broadcast_ipv6[ETH_ALEN] = {
 539                 0x33, 0x33, 0x00, 0x00, 0x00, 0x01
 540         };
 541         static u8 broadcast_ipv4[ETH_ALEN] = {
 542                 0x01, 0x00, 0x5e, 0x00, 0x00, 0x01
 543         };
 544         struct cw1200_common *priv = hw->priv;
 545         struct netdev_hw_addr *ha;
 546         int count = 0;
 547
 548         /* Disable multicast filtering */
 549         priv->has_multicast_subscription = false;
 550         memset(&priv->multicast_filter, 0x00, sizeof(priv->multicast_filter));
 551
 552         if (netdev_hw_addr_list_count(mc_list) > WSM_MAX_GRP_ADDRTABLE_ENTRIES)
 553                 return 0;
 554
 555         /* Enable if requested */
 556         netdev_hw_addr_list_for_each(ha, mc_list) {
 557                 pr_debug("[STA] multicast: %pM\n", ha->addr);
 558                 memcpy(&priv->multicast_filter.macaddrs[count],
 559                        ha->addr, ETH_ALEN);
 560                 if (!ether_addr_equal(ha->addr, broadcast_ipv4) &&
 561                     !ether_addr_equal(ha->addr, broadcast_ipv6))
 562                         priv->has_multicast_subscription = true;
 563                 count++;
 564         }
 565
 566         if (count) {
 567                 priv->multicast_filter.enable = __cpu_to_le32(1);
 568                 priv->multicast_filter.num_addrs = __cpu_to_le32(count);
 569         }
 570
 571         return netdev_hw_addr_list_count(mc_list);
 572 }
 573
 574 void cw1200_configure_filter(struct ieee80211_hw *dev,
 575                              unsigned int changed_flags,
 576                              unsigned int *total_flags,
 577                              u64 multicast)
 578 {
 579         struct cw1200_common *priv = dev->priv;
 580         bool listening = !!(*total_flags &
 581                             (FIF_OTHER_BSS |
 582                              FIF_BCN_PRBRESP_PROMISC |
 583                              FIF_PROBE_REQ));
 584
 585         *total_flags &= FIF_OTHER_BSS |
 586                         FIF_FCSFAIL |
 587                         FIF_BCN_PRBRESP_PROMISC |
 588                         FIF_PROBE_REQ;
 589
 590         down(&priv->scan.lock);
 591         mutex_lock(&priv->conf_mutex);
 592
 593         priv->rx_filter.promiscuous = 0;
 594         priv->rx_filter.bssid = (*total_flags & (FIF_OTHER_BSS |
 595                         FIF_PROBE_REQ)) ? 1 : 0;
 596         priv->rx_filter.fcs = (*total_flags & FIF_FCSFAIL) ? 1 : 0;
 597         priv->disable_beacon_filter = !(*total_flags &
 598                                         (FIF_BCN_PRBRESP_PROMISC |
 599                                          FIF_PROBE_REQ));
 600         if (priv->listening != listening) {
 601                 priv->listening = listening;
 602                 wsm_lock_tx(priv);
 603                 cw1200_update_listening(priv, listening);
 604                 wsm_unlock_tx(priv);
 605         }
 606         cw1200_update_filtering(priv);
 607         mutex_unlock(&priv->conf_mutex);
 608         up(&priv->scan.lock);
 609 }
 610
 611 int cw1200_conf_tx(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 612                    u16 queue, const struct ieee80211_tx_queue_params *params)
 613 {
 614         struct cw1200_common *priv = dev->priv;
 615         int ret = 0;
 616         /* To prevent re-applying PM request OID again and again*/
 617         bool old_uapsd_flags;
 618
 619         mutex_lock(&priv->conf_mutex);
 620
 621         if (queue < dev->queues) {
 622                 old_uapsd_flags = le16_to_cpu(priv->uapsd_info.uapsd_flags);
 623
 624                 WSM_TX_QUEUE_SET(&priv->tx_queue_params, queue, 0, 0, 0);
 625                 ret = wsm_set_tx_queue_params(priv,
 626                                               &priv->tx_queue_params.params[queue], queue);
 627                 if (ret) {
 628                         ret = -EINVAL;
 629                         goto out;
 630                 }
 631
 632                 WSM_EDCA_SET(&priv->edca, queue, params->aifs,
 633                              params->cw_min, params->cw_max,
 634                              params->txop, 0xc8,
 635                              params->uapsd);
 636                 ret = wsm_set_edca_params(priv, &priv->edca);
 637                 if (ret) {
 638                         ret = -EINVAL;
 639                         goto out;
 640                 }
 641
 642                 if (priv->mode == NL80211_IFTYPE_STATION) {
 643                         ret = cw1200_set_uapsd_param(priv, &priv->edca);
 644                         if (!ret && priv->setbssparams_done &&
 645                             (priv->join_status == CW1200_JOIN_STATUS_STA) &&
 646                             (old_uapsd_flags != le16_to_cpu(priv->uapsd_info.uapsd_flags)))
 647                                 ret = cw1200_set_pm(priv, &priv->powersave_mode);
 648                 }
 649         } else {
 650                 ret = -EINVAL;
 651         }
 652
 653 out:
 654         mutex_unlock(&priv->conf_mutex);
 655         return ret;
 656 }
 657
 658 int cw1200_get_stats(struct ieee80211_hw *dev,
 659                      struct ieee80211_low_level_stats *stats)
 660 {
 661         struct cw1200_common *priv = dev->priv;
 662
 663         memcpy(stats, &priv->stats, sizeof(*stats));
 664         return 0;
 665 }
 666
 667 int cw1200_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
 668 {
 669         struct wsm_set_pm pm = *arg;
 670
 671         if (priv->uapsd_info.uapsd_flags != 0)
 672                 pm.mode &= ~WSM_PSM_FAST_PS_FLAG;
 673
 674         if (memcmp(&pm, &priv->firmware_ps_mode,
 675                    sizeof(struct wsm_set_pm))) {
 676                 priv->firmware_ps_mode = pm;
 677                 return wsm_set_pm(priv, &pm);
 678         } else {
 679                 return 0;
 680         }
 681 }
 682
 683 int cw1200_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
 684                    struct ieee80211_vif *vif, struct ieee80211_sta *sta,
 685                    struct ieee80211_key_conf *key)
 686 {
 687         int ret = -EOPNOTSUPP;
 688         struct cw1200_common *priv = dev->priv;
 689         struct ieee80211_key_seq seq;
 690
 691         mutex_lock(&priv->conf_mutex);
 692
 693         if (cmd == SET_KEY) {
 694                 u8 *peer_addr = NULL;
 695                 int pairwise = (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) ?
 696                         1 : 0;
 697                 int idx = cw1200_alloc_key(priv);
 698                 struct wsm_add_key *wsm_key = &priv->keys[idx];
 699
 700                 if (idx < 0) {
 701                         ret = -EINVAL;
 702                         goto finally;
 703                 }
 704
 705                 if (sta)
 706                         peer_addr = sta->addr;
 707
 708                 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE |
 709                               IEEE80211_KEY_FLAG_RESERVE_TAILROOM;
 710
 711                 switch (key->cipher) {
 712                 case WLAN_CIPHER_SUITE_WEP40:
 713                 case WLAN_CIPHER_SUITE_WEP104:
 714                         if (key->keylen > 16) {
 715                                 cw1200_free_key(priv, idx);
 716                                 ret = -EINVAL;
 717                                 goto finally;
 718                         }
 719
 720                         if (pairwise) {
 721                                 wsm_key->type = WSM_KEY_TYPE_WEP_PAIRWISE;
 722                                 memcpy(wsm_key->wep_pairwise.peer,
 723                                        peer_addr, ETH_ALEN);
 724                                 memcpy(wsm_key->wep_pairwise.keydata,
 725                                        &key->key[0], key->keylen);
 726                                 wsm_key->wep_pairwise.keylen = key->keylen;
 727                         } else {
 728                                 wsm_key->type = WSM_KEY_TYPE_WEP_DEFAULT;
 729                                 memcpy(wsm_key->wep_group.keydata,
 730                                        &key->key[0], key->keylen);
 731                                 wsm_key->wep_group.keylen = key->keylen;
 732                                 wsm_key->wep_group.keyid = key->keyidx;
 733                         }
 734                         break;
 735                 case WLAN_CIPHER_SUITE_TKIP:
 736                         ieee80211_get_key_rx_seq(key, 0, &seq);
 737                         if (pairwise) {
 738                                 wsm_key->type = WSM_KEY_TYPE_TKIP_PAIRWISE;
 739                                 memcpy(wsm_key->tkip_pairwise.peer,
 740                                        peer_addr, ETH_ALEN);
 741                                 memcpy(wsm_key->tkip_pairwise.keydata,
 742                                        &key->key[0], 16);
 743                                 memcpy(wsm_key->tkip_pairwise.tx_mic_key,
 744                                        &key->key[16], 8);
 745                                 memcpy(wsm_key->tkip_pairwise.rx_mic_key,
 746                                        &key->key[24], 8);
 747                         } else {
 748                                 size_t mic_offset =
 749                                         (priv->mode == NL80211_IFTYPE_AP) ?
 750                                         16 : 24;
 751                                 wsm_key->type = WSM_KEY_TYPE_TKIP_GROUP;
 752                                 memcpy(wsm_key->tkip_group.keydata,
 753                                        &key->key[0], 16);
 754                                 memcpy(wsm_key->tkip_group.rx_mic_key,
 755                                        &key->key[mic_offset], 8);
 756
 757                                 wsm_key->tkip_group.rx_seqnum[0] = seq.tkip.iv16 & 0xff;
 758                                 wsm_key->tkip_group.rx_seqnum[1] = (seq.tkip.iv16 >> 8) & 0xff;
 759                                 wsm_key->tkip_group.rx_seqnum[2] = seq.tkip.iv32 & 0xff;
 760                                 wsm_key->tkip_group.rx_seqnum[3] = (seq.tkip.iv32 >> 8) & 0xff;
 761                                 wsm_key->tkip_group.rx_seqnum[4] = (seq.tkip.iv32 >> 16) & 0xff;
 762                                 wsm_key->tkip_group.rx_seqnum[5] = (seq.tkip.iv32 >> 24) & 0xff;
 763                                 wsm_key->tkip_group.rx_seqnum[6] = 0;
 764                                 wsm_key->tkip_group.rx_seqnum[7] = 0;
 765
 766                                 wsm_key->tkip_group.keyid = key->keyidx;
 767                         }
 768                         break;
 769                 case WLAN_CIPHER_SUITE_CCMP:
 770                         ieee80211_get_key_rx_seq(key, 0, &seq);
 771                         if (pairwise) {
 772                                 wsm_key->type = WSM_KEY_TYPE_AES_PAIRWISE;
 773                                 memcpy(wsm_key->aes_pairwise.peer,
 774                                        peer_addr, ETH_ALEN);
 775                                 memcpy(wsm_key->aes_pairwise.keydata,
 776                                        &key->key[0], 16);
 777                         } else {
 778                                 wsm_key->type = WSM_KEY_TYPE_AES_GROUP;
 779                                 memcpy(wsm_key->aes_group.keydata,
 780                                        &key->key[0], 16);
 781
 782                                 wsm_key->aes_group.rx_seqnum[0] = seq.ccmp.pn[5];
 783                                 wsm_key->aes_group.rx_seqnum[1] = seq.ccmp.pn[4];
 784                                 wsm_key->aes_group.rx_seqnum[2] = seq.ccmp.pn[3];
 785                                 wsm_key->aes_group.rx_seqnum[3] = seq.ccmp.pn[2];
 786                                 wsm_key->aes_group.rx_seqnum[4] = seq.ccmp.pn[1];
 787                                 wsm_key->aes_group.rx_seqnum[5] = seq.ccmp.pn[0];
 788                                 wsm_key->aes_group.rx_seqnum[6] = 0;
 789                                 wsm_key->aes_group.rx_seqnum[7] = 0;
 790                                 wsm_key->aes_group.keyid = key->keyidx;
 791                         }
 792                         break;
 793                 case WLAN_CIPHER_SUITE_SMS4:
 794                         if (pairwise) {
 795                                 wsm_key->type = WSM_KEY_TYPE_WAPI_PAIRWISE;
 796                                 memcpy(wsm_key->wapi_pairwise.peer,
 797                                        peer_addr, ETH_ALEN);
 798                                 memcpy(wsm_key->wapi_pairwise.keydata,
 799                                        &key->key[0], 16);
 800                                 memcpy(wsm_key->wapi_pairwise.mic_key,
 801                                        &key->key[16], 16);
 802                                 wsm_key->wapi_pairwise.keyid = key->keyidx;
 803                         } else {
 804                                 wsm_key->type = WSM_KEY_TYPE_WAPI_GROUP;
 805                                 memcpy(wsm_key->wapi_group.keydata,
 806                                        &key->key[0],  16);
 807                                 memcpy(wsm_key->wapi_group.mic_key,
 808                                        &key->key[16], 16);
 809                                 wsm_key->wapi_group.keyid = key->keyidx;
 810                         }
 811                         break;
 812                 default:
 813                         pr_warn("Unhandled key type %d\n", key->cipher);
 814                         cw1200_free_key(priv, idx);
 815                         ret = -EOPNOTSUPP;
 816                         goto finally;
 817                 }
 818                 ret = wsm_add_key(priv, wsm_key);
 819                 if (!ret)
 820                         key->hw_key_idx = idx;
 821                 else
 822                         cw1200_free_key(priv, idx);
 823         } else if (cmd == DISABLE_KEY) {
 824                 struct wsm_remove_key wsm_key = {
 825                         .index = key->hw_key_idx,
 826                 };
 827
 828                 if (wsm_key.index > WSM_KEY_MAX_INDEX) {
 829                         ret = -EINVAL;
 830                         goto finally;
 831                 }
 832
 833                 cw1200_free_key(priv, wsm_key.index);
 834                 ret = wsm_remove_key(priv, &wsm_key);
 835         } else {
 836                 pr_warn("Unhandled key command %d\n", cmd);
 837         }
 838
 839 finally:
 840         mutex_unlock(&priv->conf_mutex);
 841         return ret;
 842 }
 843
 844 void cw1200_wep_key_work(struct work_struct *work)
 845 {
 846         struct cw1200_common *priv =
 847                 container_of(work, struct cw1200_common, wep_key_work);
 848         u8 queue_id = cw1200_queue_get_queue_id(priv->pending_frame_id);
 849         struct cw1200_queue *queue = &priv->tx_queue[queue_id];
 850         __le32 wep_default_key_id = __cpu_to_le32(
 851                 priv->wep_default_key_id);
 852
 853         pr_debug("[STA] Setting default WEP key: %d\n",
 854                  priv->wep_default_key_id);
 855         wsm_flush_tx(priv);
 856         wsm_write_mib(priv, WSM_MIB_ID_DOT11_WEP_DEFAULT_KEY_ID,
 857                       &wep_default_key_id, sizeof(wep_default_key_id));
 858         cw1200_queue_requeue(queue, priv->pending_frame_id);
 859         wsm_unlock_tx(priv);
 860 }
 861
 862 int cw1200_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
 863 {
 864         int ret = 0;
 865         __le32 val32;
 866         struct cw1200_common *priv = hw->priv;
 867
 868         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 869                 return 0;
 870
 871         if (value != (u32) -1)
 872                 val32 = __cpu_to_le32(value);
 873         else
 874                 val32 = 0; /* disabled */
 875
 876         if (priv->rts_threshold == value)
 877                 goto out;
 878
 879         pr_debug("[STA] Setting RTS threshold: %d\n",
 880                  priv->rts_threshold);
 881
 882         /* mutex_lock(&priv->conf_mutex); */
 883         ret = wsm_write_mib(priv, WSM_MIB_ID_DOT11_RTS_THRESHOLD,
 884                             &val32, sizeof(val32));
 885         if (!ret)
 886                 priv->rts_threshold = value;
 887         /* mutex_unlock(&priv->conf_mutex); */
 888
 889 out:
 890         return ret;
 891 }
 892
 893 /* If successful, LOCKS the TX queue! */
 894 static int __cw1200_flush(struct cw1200_common *priv, bool drop)
 895 {
 896         int i, ret;
 897
 898         for (;;) {
 899                 /* TODO: correct flush handling is required when dev_stop.
 900                  * Temporary workaround: 2s
 901                  */
 902                 if (drop) {
 903                         for (i = 0; i < 4; ++i)
 904                                 cw1200_queue_clear(&priv->tx_queue[i]);
 905                 } else {
 906                         ret = wait_event_timeout(
 907                                 priv->tx_queue_stats.wait_link_id_empty,
 908                                 cw1200_queue_stats_is_empty(
 909                                         &priv->tx_queue_stats, -1),
 910                                 2 * HZ);
 911                 }
 912
 913                 if (!drop && ret <= 0) {
 914                         ret = -ETIMEDOUT;
 915                         break;
 916                 } else {
 917                         ret = 0;
 918                 }
 919
 920                 wsm_lock_tx(priv);
 921                 if (!cw1200_queue_stats_is_empty(&priv->tx_queue_stats, -1)) {
 922                         /* Highly unlikely: WSM requeued frames. */
 923                         wsm_unlock_tx(priv);
 924                         continue;
 925                 }
 926                 break;
 927         }
 928         return ret;
 929 }
 930
 931 void cw1200_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 932                   u32 queues, bool drop)
 933 {
 934         struct cw1200_common *priv = hw->priv;
 935
 936         switch (priv->mode) {
 937         case NL80211_IFTYPE_MONITOR:
 938                 drop = true;
 939                 break;
 940         case NL80211_IFTYPE_AP:
 941                 if (!priv->enable_beacon)
 942                         drop = true;
 943                 break;
 944         }
 945
 946         if (!__cw1200_flush(priv, drop))
 947                 wsm_unlock_tx(priv);
 948
 949         return;
 950 }
 951
 952 /* ******************************************************************** */
 953 /* WSM callbacks                                                        */
 954
 955 void cw1200_free_event_queue(struct cw1200_common *priv)
 956 {
 957         LIST_HEAD(list);
 958
 959         spin_lock(&priv->event_queue_lock);
 960         list_splice_init(&priv->event_queue, &list);
 961         spin_unlock(&priv->event_queue_lock);
 962
 963         __cw1200_free_event_queue(&list);
 964 }
 965
 966 void cw1200_event_handler(struct work_struct *work)
 967 {
 968         struct cw1200_common *priv =
 969                 container_of(work, struct cw1200_common, event_handler);
 970         struct cw1200_wsm_event *event;
 971         LIST_HEAD(list);
 972
 973         spin_lock(&priv->event_queue_lock);
 974         list_splice_init(&priv->event_queue, &list);
 975         spin_unlock(&priv->event_queue_lock);
 976
 977         list_for_each_entry(event, &list, link) {
 978                 switch (event->evt.id) {
 979                 case WSM_EVENT_ERROR:
 980                         pr_err("Unhandled WSM Error from LMAC\n");
 981                         break;
 982                 case WSM_EVENT_BSS_LOST:
 983                         pr_debug("[CQM] BSS lost.\n");
 984                         cancel_work_sync(&priv->unjoin_work);
 985                         if (!down_trylock(&priv->scan.lock)) {
 986                                 cw1200_cqm_bssloss_sm(priv, 1, 0, 0);
 987                                 up(&priv->scan.lock);
 988                         } else {
 989                                 /* Scan is in progress. Delay reporting.
 990                                  * Scan complete will trigger bss_loss_work
 991                                  */
 992                                 priv->delayed_link_loss = 1;
 993                                 /* Also start a watchdog. */
 994                                 queue_delayed_work(priv->workqueue,
 995                                                    &priv->bss_loss_work, 5*HZ);
 996                         }
 997                         break;
 998                 case WSM_EVENT_BSS_REGAINED:
 999                         pr_debug("[CQM] BSS regained.\n");
1000                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1001                         cancel_work_sync(&priv->unjoin_work);
1002                         break;
1003                 case WSM_EVENT_RADAR_DETECTED:
1004                         wiphy_info(priv->hw->wiphy, "radar pulse detected\n");
1005                         break;
1006                 case WSM_EVENT_RCPI_RSSI:
1007                 {
1008                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
1009                          * RSSI = RCPI / 2 - 110
1010                          */
1011                         int rcpi_rssi = (int)(event->evt.data & 0xFF);
1012                         int cqm_evt;
1013                         if (priv->cqm_use_rssi)
1014                                 rcpi_rssi = (s8)rcpi_rssi;
1015                         else
1016                                 rcpi_rssi =  rcpi_rssi / 2 - 110;
1017
1018                         cqm_evt = (rcpi_rssi <= priv->cqm_rssi_thold) ?
1019                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW :
1020                                 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
1021                         pr_debug("[CQM] RSSI event: %d.\n", rcpi_rssi);
1022                         ieee80211_cqm_rssi_notify(priv->vif, cqm_evt, rcpi_rssi,
1023                                                   GFP_KERNEL);
1024                         break;
1025                 }
1026                 case WSM_EVENT_BT_INACTIVE:
1027                         pr_warn("Unhandled BT INACTIVE from LMAC\n");
1028                         break;
1029                 case WSM_EVENT_BT_ACTIVE:
1030                         pr_warn("Unhandled BT ACTIVE from LMAC\n");
1031                         break;
1032                 }
1033         }
1034         __cw1200_free_event_queue(&list);
1035 }
1036
1037 void cw1200_bss_loss_work(struct work_struct *work)
1038 {
1039         struct cw1200_common *priv =
1040                 container_of(work, struct cw1200_common, bss_loss_work.work);
1041
1042         pr_debug("[CQM] Reporting connection loss.\n");
1043         wsm_lock_tx(priv);
1044         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1045                 wsm_unlock_tx(priv);
1046 }
1047
1048 void cw1200_bss_params_work(struct work_struct *work)
1049 {
1050         struct cw1200_common *priv =
1051                 container_of(work, struct cw1200_common, bss_params_work);
1052         mutex_lock(&priv->conf_mutex);
1053
1054         priv->bss_params.reset_beacon_loss = 1;
1055         wsm_set_bss_params(priv, &priv->bss_params);
1056         priv->bss_params.reset_beacon_loss = 0;
1057
1058         mutex_unlock(&priv->conf_mutex);
1059 }
1060
1061 /* ******************************************************************** */
1062 /* Internal API                                                         */
1063
1064 /* This function is called to Parse the SDD file
1065  * to extract listen_interval and PTA related information
1066  * sdd is a TLV: u8 id, u8 len, u8 data[]
1067  */
1068 static int cw1200_parse_sdd_file(struct cw1200_common *priv)
1069 {
1070         const u8 *p = priv->sdd->data;
1071         int ret = 0;
1072
1073         while (p + 2 <= priv->sdd->data + priv->sdd->size) {
1074                 if (p + p[1] + 2 > priv->sdd->data + priv->sdd->size) {
1075                         pr_warn("Malformed sdd structure\n");
1076                         return -1;
1077                 }
1078                 switch (p[0]) {
1079                 case SDD_PTA_CFG_ELT_ID: {
1080                         u16 v;
1081                         if (p[1] < 4) {
1082                                 pr_warn("SDD_PTA_CFG_ELT_ID malformed\n");
1083                                 ret = -1;
1084                                 break;
1085                         }
1086                         v = le16_to_cpu(*((__le16 *)(p + 2)));
1087                         if (!v)  /* non-zero means this is enabled */
1088                                 break;
1089
1090                         v = le16_to_cpu(*((__le16 *)(p + 4)));
1091                         priv->conf_listen_interval = (v >> 7) & 0x1F;
1092                         pr_debug("PTA found; Listen Interval %d\n",
1093                                  priv->conf_listen_interval);
1094                         break;
1095                 }
1096                 case SDD_REFERENCE_FREQUENCY_ELT_ID: {
1097                         u16 clk = le16_to_cpu(*((__le16 *)(p + 2)));
1098                         if (clk != priv->hw_refclk)
1099                                 pr_warn("SDD file doesn't match configured refclk (%d vs %d)\n",
1100                                         clk, priv->hw_refclk);
1101                         break;
1102                 }
1103                 default:
1104                         break;
1105                 }
1106                 p += p[1] + 2;
1107         }
1108
1109         if (!priv->bt_present) {
1110                 pr_debug("PTA element NOT found.\n");
1111                 priv->conf_listen_interval = 0;
1112         }
1113         return ret;
1114 }
1115
1116 int cw1200_setup_mac(struct cw1200_common *priv)
1117 {
1118         int ret = 0;
1119
1120         /* NOTE: There is a bug in FW: it reports signal
1121          * as RSSI if RSSI subscription is enabled.
1122          * It's not enough to set WSM_RCPI_RSSI_USE_RSSI.
1123          *
1124          * NOTE2: RSSI based reports have been switched to RCPI, since
1125          * FW has a bug and RSSI reported values are not stable,
1126          * what can leads to signal level oscilations in user-end applications
1127          */
1128         struct wsm_rcpi_rssi_threshold threshold = {
1129                 .rssiRcpiMode = WSM_RCPI_RSSI_THRESHOLD_ENABLE |
1130                 WSM_RCPI_RSSI_DONT_USE_UPPER |
1131                 WSM_RCPI_RSSI_DONT_USE_LOWER,
1132                 .rollingAverageCount = 16,
1133         };
1134
1135         struct wsm_configuration cfg = {
1136                 .dot11StationId = &priv->mac_addr[0],
1137         };
1138
1139         /* Remember the decission here to make sure, we will handle
1140          * the RCPI/RSSI value correctly on WSM_EVENT_RCPI_RSS
1141          */
1142         if (threshold.rssiRcpiMode & WSM_RCPI_RSSI_USE_RSSI)
1143                 priv->cqm_use_rssi = true;
1144
1145         if (!priv->sdd) {
1146                 ret = request_firmware(&priv->sdd, priv->sdd_path, priv->pdev);
1147                 if (ret) {
1148                         pr_err("Can't load sdd file %s.\n", priv->sdd_path);
1149                         return ret;
1150                 }
1151                 cw1200_parse_sdd_file(priv);
1152         }
1153
1154         cfg.dpdData = priv->sdd->data;
1155         cfg.dpdData_size = priv->sdd->size;
1156         ret = wsm_configuration(priv, &cfg);
1157         if (ret)
1158                 return ret;
1159
1160         /* Configure RSSI/SCPI reporting as RSSI. */
1161         wsm_set_rcpi_rssi_threshold(priv, &threshold);
1162
1163         return 0;
1164 }
1165
1166 static void cw1200_join_complete(struct cw1200_common *priv)
1167 {
1168         pr_debug("[STA] Join complete (%d)\n", priv->join_complete_status);
1169
1170         priv->join_pending = false;
1171         if (priv->join_complete_status) {
1172                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1173                 cw1200_update_listening(priv, priv->listening);
1174                 cw1200_do_unjoin(priv);
1175                 ieee80211_connection_loss(priv->vif);
1176         } else {
1177                 if (priv->mode == NL80211_IFTYPE_ADHOC)
1178                         priv->join_status = CW1200_JOIN_STATUS_IBSS;
1179                 else
1180                         priv->join_status = CW1200_JOIN_STATUS_PRE_STA;
1181         }
1182         wsm_unlock_tx(priv); /* Clearing the lock held before do_join() */
1183 }
1184
1185 void cw1200_join_complete_work(struct work_struct *work)
1186 {
1187         struct cw1200_common *priv =
1188                 container_of(work, struct cw1200_common, join_complete_work);
1189         mutex_lock(&priv->conf_mutex);
1190         cw1200_join_complete(priv);
1191         mutex_unlock(&priv->conf_mutex);
1192 }
1193
1194 void cw1200_join_complete_cb(struct cw1200_common *priv,
1195                              struct wsm_join_complete *arg)
1196 {
1197         pr_debug("[STA] cw1200_join_complete_cb called, status=%d.\n",
1198                  arg->status);
1199
1200         if (cancel_delayed_work(&priv->join_timeout)) {
1201                 priv->join_complete_status = arg->status;
1202                 queue_work(priv->workqueue, &priv->join_complete_work);
1203         }
1204 }
1205
1206 /* MUST be called with tx_lock held!  It will be unlocked for us. */
1207 static void cw1200_do_join(struct cw1200_common *priv)
1208 {
1209         const u8 *bssid;
1210         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
1211         struct cfg80211_bss *bss = NULL;
1212         struct wsm_protected_mgmt_policy mgmt_policy;
1213         struct wsm_join join = {
1214                 .mode = conf->ibss_joined ?
1215                                 WSM_JOIN_MODE_IBSS : WSM_JOIN_MODE_BSS,
1216                 .preamble_type = WSM_JOIN_PREAMBLE_LONG,
1217                 .probe_for_join = 1,
1218                 .atim_window = 0,
1219                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
1220                                                           conf->basic_rates),
1221         };
1222         if (delayed_work_pending(&priv->join_timeout)) {
1223                 pr_warn("[STA] - Join request already pending, skipping..\n");
1224                 wsm_unlock_tx(priv);
1225                 return;
1226         }
1227
1228         if (priv->join_status)
1229                 cw1200_do_unjoin(priv);
1230
1231         bssid = priv->vif->bss_conf.bssid;
1232
1233         bss = cfg80211_get_bss(priv->hw->wiphy, priv->channel, bssid, NULL, 0,
1234                                IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
1235
1236         if (!bss && !conf->ibss_joined) {
1237                 wsm_unlock_tx(priv);
1238                 return;
1239         }
1240
1241         mutex_lock(&priv->conf_mutex);
1242
1243         /* Under the conf lock: check scan status and
1244          * bail out if it is in progress.
1245          */
1246         if (atomic_read(&priv->scan.in_progress)) {
1247                 wsm_unlock_tx(priv);
1248                 goto done_put;
1249         }
1250
1251         priv->join_pending = true;
1252
1253         /* Sanity check basic rates */
1254         if (!join.basic_rate_set)
1255                 join.basic_rate_set = 7;
1256
1257         /* Sanity check beacon interval */
1258         if (!priv->beacon_int)
1259                 priv->beacon_int = 1;
1260
1261         join.beacon_interval = priv->beacon_int;
1262
1263         /* BT Coex related changes */
1264         if (priv->bt_present) {
1265                 if (((priv->conf_listen_interval * 100) %
1266                      priv->beacon_int) == 0)
1267                         priv->listen_interval =
1268                                 ((priv->conf_listen_interval * 100) /
1269                                  priv->beacon_int);
1270                 else
1271                         priv->listen_interval =
1272                                 ((priv->conf_listen_interval * 100) /
1273                                  priv->beacon_int + 1);
1274         }
1275
1276         if (priv->hw->conf.ps_dtim_period)
1277                 priv->join_dtim_period = priv->hw->conf.ps_dtim_period;
1278         join.dtim_period = priv->join_dtim_period;
1279
1280         join.channel_number = priv->channel->hw_value;
1281         join.band = (priv->channel->band == NL80211_BAND_5GHZ) ?
1282                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1283
1284         memcpy(join.bssid, bssid, sizeof(join.bssid));
1285
1286         pr_debug("[STA] Join BSSID: %pM DTIM: %d, interval: %d\n",
1287                  join.bssid,
1288                  join.dtim_period, priv->beacon_int);
1289
1290         if (!conf->ibss_joined) {
1291                 const u8 *ssidie;
1292                 rcu_read_lock();
1293                 ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
1294                 if (ssidie) {
1295                         join.ssid_len = ssidie[1];
1296                         memcpy(join.ssid, &ssidie[2], join.ssid_len);
1297                 }
1298                 rcu_read_unlock();
1299         }
1300
1301         if (priv->vif->p2p) {
1302                 join.flags |= WSM_JOIN_FLAGS_P2P_GO;
1303                 join.basic_rate_set =
1304                         cw1200_rate_mask_to_wsm(priv, 0xFF0);
1305         }
1306
1307         /* Enable asynchronous join calls */
1308         if (!conf->ibss_joined) {
1309                 join.flags |= WSM_JOIN_FLAGS_FORCE;
1310                 join.flags |= WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND;
1311         }
1312
1313         wsm_flush_tx(priv);
1314
1315         /* Stay Awake for Join and Auth Timeouts and a bit more */
1316         cw1200_pm_stay_awake(&priv->pm_state,
1317                              CW1200_JOIN_TIMEOUT + CW1200_AUTH_TIMEOUT);
1318
1319         cw1200_update_listening(priv, false);
1320
1321         /* Turn on Block ACKs */
1322         wsm_set_block_ack_policy(priv, priv->ba_tx_tid_mask,
1323                                  priv->ba_rx_tid_mask);
1324
1325         /* Set up timeout */
1326         if (join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND) {
1327                 priv->join_status = CW1200_JOIN_STATUS_JOINING;
1328                 queue_delayed_work(priv->workqueue,
1329                                    &priv->join_timeout,
1330                                    CW1200_JOIN_TIMEOUT);
1331         }
1332
1333         /* 802.11w protected mgmt frames */
1334         mgmt_policy.protectedMgmtEnable = 0;
1335         mgmt_policy.unprotectedMgmtFramesAllowed = 1;
1336         mgmt_policy.encryptionForAuthFrame = 1;
1337         wsm_set_protected_mgmt_policy(priv, &mgmt_policy);
1338
1339         /* Perform actual join */
1340         if (wsm_join(priv, &join)) {
1341                 pr_err("[STA] cw1200_join_work: wsm_join failed!\n");
1342                 cancel_delayed_work_sync(&priv->join_timeout);
1343                 cw1200_update_listening(priv, priv->listening);
1344                 /* Tx lock still held, unjoin will clear it. */
1345                 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1346                         wsm_unlock_tx(priv);
1347         } else {
1348                 if (!(join.flags & WSM_JOIN_FLAGS_FORCE_WITH_COMPLETE_IND))
1349                         cw1200_join_complete(priv); /* Will clear tx_lock */
1350
1351                 /* Upload keys */
1352                 cw1200_upload_keys(priv);
1353
1354                 /* Due to beacon filtering it is possible that the
1355                  * AP's beacon is not known for the mac80211 stack.
1356                  * Disable filtering temporary to make sure the stack
1357                  * receives at least one
1358                  */
1359                 priv->disable_beacon_filter = true;
1360         }
1361         cw1200_update_filtering(priv);
1362
1363 done_put:
1364         mutex_unlock(&priv->conf_mutex);
1365         if (bss)
1366                 cfg80211_put_bss(priv->hw->wiphy, bss);
1367 }
1368
1369 void cw1200_join_timeout(struct work_struct *work)
1370 {
1371         struct cw1200_common *priv =
1372                 container_of(work, struct cw1200_common, join_timeout.work);
1373         pr_debug("[WSM] Join timed out.\n");
1374         wsm_lock_tx(priv);
1375         if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1376                 wsm_unlock_tx(priv);
1377 }
1378
1379 static void cw1200_do_unjoin(struct cw1200_common *priv)
1380 {
1381         struct wsm_reset reset = {
1382                 .reset_statistics = true,
1383         };
1384
1385         cancel_delayed_work_sync(&priv->join_timeout);
1386
1387         mutex_lock(&priv->conf_mutex);
1388         priv->join_pending = false;
1389
1390         if (atomic_read(&priv->scan.in_progress)) {
1391                 if (priv->delayed_unjoin)
1392                         wiphy_dbg(priv->hw->wiphy, "Delayed unjoin is already scheduled.\n");
1393                 else
1394                         priv->delayed_unjoin = true;
1395                 goto done;
1396         }
1397
1398         priv->delayed_link_loss = false;
1399
1400         if (!priv->join_status)
1401                 goto done;
1402
1403         if (priv->join_status == CW1200_JOIN_STATUS_AP)
1404                 goto done;
1405
1406         cancel_work_sync(&priv->update_filtering_work);
1407         cancel_work_sync(&priv->set_beacon_wakeup_period_work);
1408         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1409
1410         /* Unjoin is a reset. */
1411         wsm_flush_tx(priv);
1412         wsm_keep_alive_period(priv, 0);
1413         wsm_reset(priv, &reset);
1414         wsm_set_output_power(priv, priv->output_power * 10);
1415         priv->join_dtim_period = 0;
1416         cw1200_setup_mac(priv);
1417         cw1200_free_event_queue(priv);
1418         cancel_work_sync(&priv->event_handler);
1419         cw1200_update_listening(priv, priv->listening);
1420         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1421
1422         /* Disable Block ACKs */
1423         wsm_set_block_ack_policy(priv, 0, 0);
1424
1425         priv->disable_beacon_filter = false;
1426         cw1200_update_filtering(priv);
1427         memset(&priv->association_mode, 0,
1428                sizeof(priv->association_mode));
1429         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1430         priv->setbssparams_done = false;
1431         memset(&priv->firmware_ps_mode, 0,
1432                sizeof(priv->firmware_ps_mode));
1433
1434         pr_debug("[STA] Unjoin completed.\n");
1435
1436 done:
1437         mutex_unlock(&priv->conf_mutex);
1438 }
1439
1440 void cw1200_unjoin_work(struct work_struct *work)
1441 {
1442         struct cw1200_common *priv =
1443                 container_of(work, struct cw1200_common, unjoin_work);
1444
1445         cw1200_do_unjoin(priv);
1446
1447         /* Tell the stack we're dead */
1448         ieee80211_connection_loss(priv->vif);
1449
1450         wsm_unlock_tx(priv);
1451 }
1452
1453 int cw1200_enable_listening(struct cw1200_common *priv)
1454 {
1455         struct wsm_start start = {
1456                 .mode = WSM_START_MODE_P2P_DEV,
1457                 .band = WSM_PHY_BAND_2_4G,
1458                 .beacon_interval = 100,
1459                 .dtim_period = 1,
1460                 .probe_delay = 0,
1461                 .basic_rate_set = 0x0F,
1462         };
1463
1464         if (priv->channel) {
1465                 start.band = priv->channel->band == NL80211_BAND_5GHZ ?
1466                              WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G;
1467                 start.channel_number = priv->channel->hw_value;
1468         } else {
1469                 start.band = WSM_PHY_BAND_2_4G;
1470                 start.channel_number = 1;
1471         }
1472
1473         return wsm_start(priv, &start);
1474 }
1475
1476 int cw1200_disable_listening(struct cw1200_common *priv)
1477 {
1478         int ret;
1479         struct wsm_reset reset = {
1480                 .reset_statistics = true,
1481         };
1482         ret = wsm_reset(priv, &reset);
1483         return ret;
1484 }
1485
1486 void cw1200_update_listening(struct cw1200_common *priv, bool enabled)
1487 {
1488         if (enabled) {
1489                 if (priv->join_status == CW1200_JOIN_STATUS_PASSIVE) {
1490                         if (!cw1200_enable_listening(priv))
1491                                 priv->join_status = CW1200_JOIN_STATUS_MONITOR;
1492                         wsm_set_probe_responder(priv, true);
1493                 }
1494         } else {
1495                 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR) {
1496                         if (!cw1200_disable_listening(priv))
1497                                 priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
1498                         wsm_set_probe_responder(priv, false);
1499                 }
1500         }
1501 }
1502
1503 int cw1200_set_uapsd_param(struct cw1200_common *priv,
1504                            const struct wsm_edca_params *arg)
1505 {
1506         int ret;
1507         u16 uapsd_flags = 0;
1508
1509         /* Here's the mapping AC [queue, bit]
1510          *  VO [0,3], VI [1, 2], BE [2, 1], BK [3, 0]
1511          */
1512
1513         if (arg->uapsd_enable[0])
1514                 uapsd_flags |= 1 << 3;
1515
1516         if (arg->uapsd_enable[1])
1517                 uapsd_flags |= 1 << 2;
1518
1519         if (arg->uapsd_enable[2])
1520                 uapsd_flags |= 1 << 1;
1521
1522         if (arg->uapsd_enable[3])
1523                 uapsd_flags |= 1;
1524
1525         /* Currently pseudo U-APSD operation is not supported, so setting
1526          * MinAutoTriggerInterval, MaxAutoTriggerInterval and
1527          * AutoTriggerStep to 0
1528          */
1529
1530         priv->uapsd_info.uapsd_flags = cpu_to_le16(uapsd_flags);
1531         priv->uapsd_info.min_auto_trigger_interval = 0;
1532         priv->uapsd_info.max_auto_trigger_interval = 0;
1533         priv->uapsd_info.auto_trigger_step = 0;
1534
1535         ret = wsm_set_uapsd_info(priv, &priv->uapsd_info);
1536         return ret;
1537 }
1538
1539 /* ******************************************************************** */
1540 /* AP API                                                               */
1541
1542 int cw1200_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1543                    struct ieee80211_sta *sta)
1544 {
1545         struct cw1200_common *priv = hw->priv;
1546         struct cw1200_sta_priv *sta_priv =
1547                         (struct cw1200_sta_priv *)&sta->drv_priv;
1548         struct cw1200_link_entry *entry;
1549         struct sk_buff *skb;
1550
1551         if (priv->mode != NL80211_IFTYPE_AP)
1552                 return 0;
1553
1554         sta_priv->link_id = cw1200_find_link_id(priv, sta->addr);
1555         if (WARN_ON(!sta_priv->link_id)) {
1556                 wiphy_info(priv->hw->wiphy,
1557                            "[AP] No more link IDs available.\n");
1558                 return -ENOENT;
1559         }
1560
1561         entry = &priv->link_id_db[sta_priv->link_id - 1];
1562         spin_lock_bh(&priv->ps_state_lock);
1563         if ((sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) ==
1564                                         IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
1565                 priv->sta_asleep_mask |= BIT(sta_priv->link_id);
1566         entry->status = CW1200_LINK_HARD;
1567         while ((skb = skb_dequeue(&entry->rx_queue)))
1568                 ieee80211_rx_irqsafe(priv->hw, skb);
1569         spin_unlock_bh(&priv->ps_state_lock);
1570         return 0;
1571 }
1572
1573 int cw1200_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
1574                       struct ieee80211_sta *sta)
1575 {
1576         struct cw1200_common *priv = hw->priv;
1577         struct cw1200_sta_priv *sta_priv =
1578                         (struct cw1200_sta_priv *)&sta->drv_priv;
1579         struct cw1200_link_entry *entry;
1580
1581         if (priv->mode != NL80211_IFTYPE_AP || !sta_priv->link_id)
1582                 return 0;
1583
1584         entry = &priv->link_id_db[sta_priv->link_id - 1];
1585         spin_lock_bh(&priv->ps_state_lock);
1586         entry->status = CW1200_LINK_RESERVE;
1587         entry->timestamp = jiffies;
1588         wsm_lock_tx_async(priv);
1589         if (queue_work(priv->workqueue, &priv->link_id_work) <= 0)
1590                 wsm_unlock_tx(priv);
1591         spin_unlock_bh(&priv->ps_state_lock);
1592         flush_workqueue(priv->workqueue);
1593         return 0;
1594 }
1595
1596 static void __cw1200_sta_notify(struct ieee80211_hw *dev,
1597                                 struct ieee80211_vif *vif,
1598                                 enum sta_notify_cmd notify_cmd,
1599                                 int link_id)
1600 {
1601         struct cw1200_common *priv = dev->priv;
1602         u32 bit, prev;
1603
1604         /* Zero link id means "for all link IDs" */
1605         if (link_id)
1606                 bit = BIT(link_id);
1607         else if (WARN_ON_ONCE(notify_cmd != STA_NOTIFY_AWAKE))
1608                 bit = 0;
1609         else
1610                 bit = priv->link_id_map;
1611         prev = priv->sta_asleep_mask & bit;
1612
1613         switch (notify_cmd) {
1614         case STA_NOTIFY_SLEEP:
1615                 if (!prev) {
1616                         if (priv->buffered_multicasts &&
1617                             !priv->sta_asleep_mask)
1618                                 queue_work(priv->workqueue,
1619                                            &priv->multicast_start_work);
1620                         priv->sta_asleep_mask |= bit;
1621                 }
1622                 break;
1623         case STA_NOTIFY_AWAKE:
1624                 if (prev) {
1625                         priv->sta_asleep_mask &= ~bit;
1626                         priv->pspoll_mask &= ~bit;
1627                         if (priv->tx_multicast && link_id &&
1628                             !priv->sta_asleep_mask)
1629                                 queue_work(priv->workqueue,
1630                                            &priv->multicast_stop_work);
1631                         cw1200_bh_wakeup(priv);
1632                 }
1633                 break;
1634         }
1635 }
1636
1637 void cw1200_sta_notify(struct ieee80211_hw *dev,
1638                        struct ieee80211_vif *vif,
1639                        enum sta_notify_cmd notify_cmd,
1640                        struct ieee80211_sta *sta)
1641 {
1642         struct cw1200_common *priv = dev->priv;
1643         struct cw1200_sta_priv *sta_priv =
1644                 (struct cw1200_sta_priv *)&sta->drv_priv;
1645
1646         spin_lock_bh(&priv->ps_state_lock);
1647         __cw1200_sta_notify(dev, vif, notify_cmd, sta_priv->link_id);
1648         spin_unlock_bh(&priv->ps_state_lock);
1649 }
1650
1651 static void cw1200_ps_notify(struct cw1200_common *priv,
1652                       int link_id, bool ps)
1653 {
1654         if (link_id > CW1200_MAX_STA_IN_AP_MODE)
1655                 return;
1656
1657         pr_debug("%s for LinkId: %d. STAs asleep: %.8X\n",
1658                  ps ? "Stop" : "Start",
1659                  link_id, priv->sta_asleep_mask);
1660
1661         __cw1200_sta_notify(priv->hw, priv->vif,
1662                             ps ? STA_NOTIFY_SLEEP : STA_NOTIFY_AWAKE, link_id);
1663 }
1664
1665 static int cw1200_set_tim_impl(struct cw1200_common *priv, bool aid0_bit_set)
1666 {
1667         struct sk_buff *skb;
1668         struct wsm_update_ie update_ie = {
1669                 .what = WSM_UPDATE_IE_BEACON,
1670                 .count = 1,
1671         };
1672         u16 tim_offset, tim_length;
1673
1674         pr_debug("[AP] mcast: %s.\n", aid0_bit_set ? "ena" : "dis");
1675
1676         skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
1677                         &tim_offset, &tim_length);
1678         if (!skb) {
1679                 if (!__cw1200_flush(priv, true))
1680                         wsm_unlock_tx(priv);
1681                 return -ENOENT;
1682         }
1683
1684         if (tim_offset && tim_length >= 6) {
1685                 /* Ignore DTIM count from mac80211:
1686                  * firmware handles DTIM internally.
1687                  */
1688                 skb->data[tim_offset + 2] = 0;
1689
1690                 /* Set/reset aid0 bit */
1691                 if (aid0_bit_set)
1692                         skb->data[tim_offset + 4] |= 1;
1693                 else
1694                         skb->data[tim_offset + 4] &= ~1;
1695         }
1696
1697         update_ie.ies = &skb->data[tim_offset];
1698         update_ie.length = tim_length;
1699         wsm_update_ie(priv, &update_ie);
1700
1701         dev_kfree_skb(skb);
1702
1703         return 0;
1704 }
1705
1706 void cw1200_set_tim_work(struct work_struct *work)
1707 {
1708         struct cw1200_common *priv =
1709                 container_of(work, struct cw1200_common, set_tim_work);
1710         (void)cw1200_set_tim_impl(priv, priv->aid0_bit_set);
1711 }
1712
1713 int cw1200_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1714                    bool set)
1715 {
1716         struct cw1200_common *priv = dev->priv;
1717         queue_work(priv->workqueue, &priv->set_tim_work);
1718         return 0;
1719 }
1720
1721 void cw1200_set_cts_work(struct work_struct *work)
1722 {
1723         struct cw1200_common *priv =
1724                 container_of(work, struct cw1200_common, set_cts_work);
1725
1726         u8 erp_ie[3] = {WLAN_EID_ERP_INFO, 0x1, 0};
1727         struct wsm_update_ie update_ie = {
1728                 .what = WSM_UPDATE_IE_BEACON,
1729                 .count = 1,
1730                 .ies = erp_ie,
1731                 .length = 3,
1732         };
1733         u32 erp_info;
1734         __le32 use_cts_prot;
1735         mutex_lock(&priv->conf_mutex);
1736         erp_info = priv->erp_info;
1737         mutex_unlock(&priv->conf_mutex);
1738         use_cts_prot =
1739                 erp_info & WLAN_ERP_USE_PROTECTION ?
1740                 __cpu_to_le32(1) : 0;
1741
1742         erp_ie[ERP_INFO_BYTE_OFFSET] = erp_info;
1743
1744         pr_debug("[STA] ERP information 0x%x\n", erp_info);
1745
1746         wsm_write_mib(priv, WSM_MIB_ID_NON_ERP_PROTECTION,
1747                       &use_cts_prot, sizeof(use_cts_prot));
1748         wsm_update_ie(priv, &update_ie);
1749
1750         return;
1751 }
1752
1753 static int cw1200_set_btcoexinfo(struct cw1200_common *priv)
1754 {
1755         struct wsm_override_internal_txrate arg;
1756         int ret = 0;
1757
1758         if (priv->mode == NL80211_IFTYPE_STATION) {
1759                 /* Plumb PSPOLL and NULL template */
1760                 cw1200_upload_pspoll(priv);
1761                 cw1200_upload_null(priv);
1762                 cw1200_upload_qosnull(priv);
1763         } else {
1764                 return 0;
1765         }
1766
1767         memset(&arg, 0, sizeof(struct wsm_override_internal_txrate));
1768
1769         if (!priv->vif->p2p) {
1770                 /* STATION mode */
1771                 if (priv->bss_params.operational_rate_set & ~0xF) {
1772                         pr_debug("[STA] STA has ERP rates\n");
1773                         /* G or BG mode */
1774                         arg.internalTxRate = (__ffs(
1775                         priv->bss_params.operational_rate_set & ~0xF));
1776                 } else {
1777                         pr_debug("[STA] STA has non ERP rates\n");
1778                         /* B only mode */
1779                         arg.internalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1780                 }
1781                 arg.nonErpInternalTxRate = (__ffs(le32_to_cpu(priv->association_mode.basic_rate_set)));
1782         } else {
1783                 /* P2P mode */
1784                 arg.internalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1785                 arg.nonErpInternalTxRate = (__ffs(priv->bss_params.operational_rate_set & ~0xF));
1786         }
1787
1788         pr_debug("[STA] BTCOEX_INFO MODE %d, internalTxRate : %x, nonErpInternalTxRate: %x\n",
1789                  priv->mode,
1790                  arg.internalTxRate,
1791                  arg.nonErpInternalTxRate);
1792
1793         ret = wsm_write_mib(priv, WSM_MIB_ID_OVERRIDE_INTERNAL_TX_RATE,
1794                             &arg, sizeof(arg));
1795
1796         return ret;
1797 }
1798
1799 void cw1200_bss_info_changed(struct ieee80211_hw *dev,
1800                              struct ieee80211_vif *vif,
1801                              struct ieee80211_bss_conf *info,
1802                              u32 changed)
1803 {
1804         struct cw1200_common *priv = dev->priv;
1805         bool do_join = false;
1806
1807         mutex_lock(&priv->conf_mutex);
1808
1809         pr_debug("BSS CHANGED:  %08x\n", changed);
1810
1811         /* TODO: BSS_CHANGED_QOS */
1812         /* TODO: BSS_CHANGED_TXPOWER */
1813
1814         if (changed & BSS_CHANGED_ARP_FILTER) {
1815                 struct wsm_mib_arp_ipv4_filter filter = {0};
1816                 int i;
1817
1818                 pr_debug("[STA] BSS_CHANGED_ARP_FILTER cnt: %d\n",
1819                          info->arp_addr_cnt);
1820
1821                 /* Currently only one IP address is supported by firmware.
1822                  * In case of more IPs arp filtering will be disabled.
1823                  */
1824                 if (info->arp_addr_cnt > 0 &&
1825                     info->arp_addr_cnt <= WSM_MAX_ARP_IP_ADDRTABLE_ENTRIES) {
1826                         for (i = 0; i < info->arp_addr_cnt; i++) {
1827                                 filter.ipv4addrs[i] = info->arp_addr_list[i];
1828                                 pr_debug("[STA] addr[%d]: 0x%X\n",
1829                                          i, filter.ipv4addrs[i]);
1830                         }
1831                         filter.enable = __cpu_to_le32(1);
1832                 }
1833
1834                 pr_debug("[STA] arp ip filter enable: %d\n",
1835                          __le32_to_cpu(filter.enable));
1836
1837                 wsm_set_arp_ipv4_filter(priv, &filter);
1838         }
1839
1840         if (changed &
1841             (BSS_CHANGED_BEACON |
1842              BSS_CHANGED_AP_PROBE_RESP |
1843              BSS_CHANGED_BSSID |
1844              BSS_CHANGED_SSID |
1845              BSS_CHANGED_IBSS)) {
1846                 pr_debug("BSS_CHANGED_BEACON\n");
1847                 priv->beacon_int = info->beacon_int;
1848                 cw1200_update_beaconing(priv);
1849                 cw1200_upload_beacon(priv);
1850         }
1851
1852         if (changed & BSS_CHANGED_BEACON_ENABLED) {
1853                 pr_debug("BSS_CHANGED_BEACON_ENABLED (%d)\n", info->enable_beacon);
1854
1855                 if (priv->enable_beacon != info->enable_beacon) {
1856                         cw1200_enable_beaconing(priv, info->enable_beacon);
1857                         priv->enable_beacon = info->enable_beacon;
1858                 }
1859         }
1860
1861         if (changed & BSS_CHANGED_BEACON_INT) {
1862                 pr_debug("CHANGED_BEACON_INT\n");
1863                 if (info->ibss_joined)
1864                         do_join = true;
1865                 else if (priv->join_status == CW1200_JOIN_STATUS_AP)
1866                         cw1200_update_beaconing(priv);
1867         }
1868
1869         /* assoc/disassoc, or maybe AID changed */
1870         if (changed & BSS_CHANGED_ASSOC) {
1871                 wsm_lock_tx(priv);
1872                 priv->wep_default_key_id = -1;
1873                 wsm_unlock_tx(priv);
1874         }
1875
1876         if (changed & BSS_CHANGED_BSSID) {
1877                 pr_debug("BSS_CHANGED_BSSID\n");
1878                 do_join = true;
1879         }
1880
1881         if (changed &
1882             (BSS_CHANGED_ASSOC |
1883              BSS_CHANGED_BSSID |
1884              BSS_CHANGED_IBSS |
1885              BSS_CHANGED_BASIC_RATES |
1886              BSS_CHANGED_HT)) {
1887                 pr_debug("BSS_CHANGED_ASSOC\n");
1888                 if (info->assoc) {
1889                         if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA) {
1890                                 ieee80211_connection_loss(vif);
1891                                 mutex_unlock(&priv->conf_mutex);
1892                                 return;
1893                         } else if (priv->join_status == CW1200_JOIN_STATUS_PRE_STA) {
1894                                 priv->join_status = CW1200_JOIN_STATUS_STA;
1895                         }
1896                 } else {
1897                         do_join = true;
1898                 }
1899
1900                 if (info->assoc || info->ibss_joined) {
1901                         struct ieee80211_sta *sta = NULL;
1902                         __le32 htprot = 0;
1903
1904                         if (info->dtim_period)
1905                                 priv->join_dtim_period = info->dtim_period;
1906                         priv->beacon_int = info->beacon_int;
1907
1908                         rcu_read_lock();
1909
1910                         if (info->bssid && !info->ibss_joined)
1911                                 sta = ieee80211_find_sta(vif, info->bssid);
1912                         if (sta) {
1913                                 priv->ht_info.ht_cap = sta->ht_cap;
1914                                 priv->bss_params.operational_rate_set =
1915                                         cw1200_rate_mask_to_wsm(priv,
1916                                                                 sta->supp_rates[priv->channel->band]);
1917                                 priv->ht_info.channel_type = cfg80211_get_chandef_type(&dev->conf.chandef);
1918                                 priv->ht_info.operation_mode = info->ht_operation_mode;
1919                         } else {
1920                                 memset(&priv->ht_info, 0,
1921                                        sizeof(priv->ht_info));
1922                                 priv->bss_params.operational_rate_set = -1;
1923                         }
1924                         rcu_read_unlock();
1925
1926                         /* Non Greenfield stations present */
1927                         if (priv->ht_info.operation_mode &
1928                             IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT)
1929                                 htprot |= cpu_to_le32(WSM_NON_GREENFIELD_STA_PRESENT);
1930
1931                         /* Set HT protection method */
1932                         htprot |= cpu_to_le32((priv->ht_info.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION) << 2);
1933
1934                         /* TODO:
1935                          * STBC_param.dual_cts
1936                          *  STBC_param.LSIG_TXOP_FILL
1937                          */
1938
1939                         wsm_write_mib(priv, WSM_MIB_ID_SET_HT_PROTECTION,
1940                                       &htprot, sizeof(htprot));
1941
1942                         priv->association_mode.greenfield =
1943                                 cw1200_ht_greenfield(&priv->ht_info);
1944                         priv->association_mode.flags =
1945                                 WSM_ASSOCIATION_MODE_SNOOP_ASSOC_FRAMES |
1946                                 WSM_ASSOCIATION_MODE_USE_PREAMBLE_TYPE |
1947                                 WSM_ASSOCIATION_MODE_USE_HT_MODE |
1948                                 WSM_ASSOCIATION_MODE_USE_BASIC_RATE_SET |
1949                                 WSM_ASSOCIATION_MODE_USE_MPDU_START_SPACING;
1950                         priv->association_mode.preamble =
1951                                 info->use_short_preamble ?
1952                                 WSM_JOIN_PREAMBLE_SHORT :
1953                                 WSM_JOIN_PREAMBLE_LONG;
1954                         priv->association_mode.basic_rate_set = __cpu_to_le32(
1955                                 cw1200_rate_mask_to_wsm(priv,
1956                                                         info->basic_rates));
1957                         priv->association_mode.mpdu_start_spacing =
1958                                 cw1200_ht_ampdu_density(&priv->ht_info);
1959
1960                         cw1200_cqm_bssloss_sm(priv, 0, 0, 0);
1961                         cancel_work_sync(&priv->unjoin_work);
1962
1963                         priv->bss_params.beacon_lost_count = priv->cqm_beacon_loss_count;
1964                         priv->bss_params.aid = info->aid;
1965
1966                         if (priv->join_dtim_period < 1)
1967                                 priv->join_dtim_period = 1;
1968
1969                         pr_debug("[STA] DTIM %d, interval: %d\n",
1970                                  priv->join_dtim_period, priv->beacon_int);
1971                         pr_debug("[STA] Preamble: %d, Greenfield: %d, Aid: %d, Rates: 0x%.8X, Basic: 0x%.8X\n",
1972                                  priv->association_mode.preamble,
1973                                  priv->association_mode.greenfield,
1974                                  priv->bss_params.aid,
1975                                  priv->bss_params.operational_rate_set,
1976                                  priv->association_mode.basic_rate_set);
1977                         wsm_set_association_mode(priv, &priv->association_mode);
1978
1979                         if (!info->ibss_joined) {
1980                                 wsm_keep_alive_period(priv, 30 /* sec */);
1981                                 wsm_set_bss_params(priv, &priv->bss_params);
1982                                 priv->setbssparams_done = true;
1983                                 cw1200_set_beacon_wakeup_period_work(&priv->set_beacon_wakeup_period_work);
1984                                 cw1200_set_pm(priv, &priv->powersave_mode);
1985                         }
1986                         if (priv->vif->p2p) {
1987                                 pr_debug("[STA] Setting p2p powersave configuration.\n");
1988                                 wsm_set_p2p_ps_modeinfo(priv,
1989                                                         &priv->p2p_ps_modeinfo);
1990                         }
1991                         if (priv->bt_present)
1992                                 cw1200_set_btcoexinfo(priv);
1993                 } else {
1994                         memset(&priv->association_mode, 0,
1995                                sizeof(priv->association_mode));
1996                         memset(&priv->bss_params, 0, sizeof(priv->bss_params));
1997                 }
1998         }
1999
2000         /* ERP Protection */
2001         if (changed & (BSS_CHANGED_ASSOC |
2002                        BSS_CHANGED_ERP_CTS_PROT |
2003                        BSS_CHANGED_ERP_PREAMBLE)) {
2004                 u32 prev_erp_info = priv->erp_info;
2005                 if (info->use_cts_prot)
2006                         priv->erp_info |= WLAN_ERP_USE_PROTECTION;
2007                 else if (!(prev_erp_info & WLAN_ERP_NON_ERP_PRESENT))
2008                         priv->erp_info &= ~WLAN_ERP_USE_PROTECTION;
2009
2010                 if (info->use_short_preamble)
2011                         priv->erp_info |= WLAN_ERP_BARKER_PREAMBLE;
2012                 else
2013                         priv->erp_info &= ~WLAN_ERP_BARKER_PREAMBLE;
2014
2015                 pr_debug("[STA] ERP Protection: %x\n", priv->erp_info);
2016
2017                 if (prev_erp_info != priv->erp_info)
2018                         queue_work(priv->workqueue, &priv->set_cts_work);
2019         }
2020
2021         /* ERP Slottime */
2022         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_ERP_SLOT)) {
2023                 __le32 slot_time = info->use_short_slot ?
2024                         __cpu_to_le32(9) : __cpu_to_le32(20);
2025                 pr_debug("[STA] Slot time: %d us.\n",
2026                          __le32_to_cpu(slot_time));
2027                 wsm_write_mib(priv, WSM_MIB_ID_DOT11_SLOT_TIME,
2028                               &slot_time, sizeof(slot_time));
2029         }
2030
2031         if (changed & (BSS_CHANGED_ASSOC | BSS_CHANGED_CQM)) {
2032                 struct wsm_rcpi_rssi_threshold threshold = {
2033                         .rollingAverageCount = 8,
2034                 };
2035                 pr_debug("[CQM] RSSI threshold subscribe: %d +- %d\n",
2036                          info->cqm_rssi_thold, info->cqm_rssi_hyst);
2037                 priv->cqm_rssi_thold = info->cqm_rssi_thold;
2038                 priv->cqm_rssi_hyst = info->cqm_rssi_hyst;
2039
2040                 if (info->cqm_rssi_thold || info->cqm_rssi_hyst) {
2041                         /* RSSI subscription enabled */
2042                         /* TODO: It's not a correct way of setting threshold.
2043                          * Upper and lower must be set equal here and adjusted
2044                          * in callback. However current implementation is much
2045                          * more relaible and stable.
2046                          */
2047
2048                         /* RSSI: signed Q8.0, RCPI: unsigned Q7.1
2049                          * RSSI = RCPI / 2 - 110
2050                          */
2051                         if (priv->cqm_use_rssi) {
2052                                 threshold.upperThreshold =
2053                                         info->cqm_rssi_thold + info->cqm_rssi_hyst;
2054                                 threshold.lowerThreshold =
2055                                         info->cqm_rssi_thold;
2056                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2057                         } else {
2058                                 threshold.upperThreshold = (info->cqm_rssi_thold + info->cqm_rssi_hyst + 110) * 2;
2059                                 threshold.lowerThreshold = (info->cqm_rssi_thold + 110) * 2;
2060                         }
2061                         threshold.rssiRcpiMode |= WSM_RCPI_RSSI_THRESHOLD_ENABLE;
2062                 } else {
2063                         /* There is a bug in FW, see sta.c. We have to enable
2064                          * dummy subscription to get correct RSSI values.
2065                          */
2066                         threshold.rssiRcpiMode |=
2067                                 WSM_RCPI_RSSI_THRESHOLD_ENABLE |
2068                                 WSM_RCPI_RSSI_DONT_USE_UPPER |
2069                                 WSM_RCPI_RSSI_DONT_USE_LOWER;
2070                         if (priv->cqm_use_rssi)
2071                                 threshold.rssiRcpiMode |= WSM_RCPI_RSSI_USE_RSSI;
2072                 }
2073                 wsm_set_rcpi_rssi_threshold(priv, &threshold);
2074         }
2075         mutex_unlock(&priv->conf_mutex);
2076
2077         if (do_join) {
2078                 wsm_lock_tx(priv);
2079                 cw1200_do_join(priv); /* Will unlock it for us */
2080         }
2081 }
2082
2083 void cw1200_multicast_start_work(struct work_struct *work)
2084 {
2085         struct cw1200_common *priv =
2086                 container_of(work, struct cw1200_common, multicast_start_work);
2087         long tmo = priv->join_dtim_period *
2088                         (priv->beacon_int + 20) * HZ / 1024;
2089
2090         cancel_work_sync(&priv->multicast_stop_work);
2091
2092         if (!priv->aid0_bit_set) {
2093                 wsm_lock_tx(priv);
2094                 cw1200_set_tim_impl(priv, true);
2095                 priv->aid0_bit_set = true;
2096                 mod_timer(&priv->mcast_timeout, jiffies + tmo);
2097                 wsm_unlock_tx(priv);
2098         }
2099 }
2100
2101 void cw1200_multicast_stop_work(struct work_struct *work)
2102 {
2103         struct cw1200_common *priv =
2104                 container_of(work, struct cw1200_common, multicast_stop_work);
2105
2106         if (priv->aid0_bit_set) {
2107                 del_timer_sync(&priv->mcast_timeout);
2108                 wsm_lock_tx(priv);
2109                 priv->aid0_bit_set = false;
2110                 cw1200_set_tim_impl(priv, false);
2111                 wsm_unlock_tx(priv);
2112         }
2113 }
2114
2115 void cw1200_mcast_timeout(struct timer_list *t)
2116 {
2117         struct cw1200_common *priv = from_timer(priv, t, mcast_timeout);
2118
2119         wiphy_warn(priv->hw->wiphy,
2120                    "Multicast delivery timeout.\n");
2121         spin_lock_bh(&priv->ps_state_lock);
2122         priv->tx_multicast = priv->aid0_bit_set &&
2123                         priv->buffered_multicasts;
2124         if (priv->tx_multicast)
2125                 cw1200_bh_wakeup(priv);
2126         spin_unlock_bh(&priv->ps_state_lock);
2127 }
2128
2129 int cw1200_ampdu_action(struct ieee80211_hw *hw,
2130                         struct ieee80211_vif *vif,
2131                         struct ieee80211_ampdu_params *params)
2132 {
2133         /* Aggregation is implemented fully in firmware,
2134          * including block ack negotiation. Do not allow
2135          * mac80211 stack to do anything: it interferes with
2136          * the firmware.
2137          */
2138
2139         /* Note that we still need this function stubbed. */
2140         return -ENOTSUPP;
2141 }
2142
2143 /* ******************************************************************** */
2144 /* WSM callback                                                         */
2145 void cw1200_suspend_resume(struct cw1200_common *priv,
2146                           struct wsm_suspend_resume *arg)
2147 {
2148         pr_debug("[AP] %s: %s\n",
2149                  arg->stop ? "stop" : "start",
2150                  arg->multicast ? "broadcast" : "unicast");
2151
2152         if (arg->multicast) {
2153                 bool cancel_tmo = false;
2154                 spin_lock_bh(&priv->ps_state_lock);
2155                 if (arg->stop) {
2156                         priv->tx_multicast = false;
2157                 } else {
2158                         /* Firmware sends this indication every DTIM if there
2159                          * is a STA in powersave connected. There is no reason
2160                          * to suspend, following wakeup will consume much more
2161                          * power than it could be saved.
2162                          */
2163                         cw1200_pm_stay_awake(&priv->pm_state,
2164                                              priv->join_dtim_period *
2165                                              (priv->beacon_int + 20) * HZ / 1024);
2166                         priv->tx_multicast = (priv->aid0_bit_set &&
2167                                               priv->buffered_multicasts);
2168                         if (priv->tx_multicast) {
2169                                 cancel_tmo = true;
2170                                 cw1200_bh_wakeup(priv);
2171                         }
2172                 }
2173                 spin_unlock_bh(&priv->ps_state_lock);
2174                 if (cancel_tmo)
2175                         del_timer_sync(&priv->mcast_timeout);
2176         } else {
2177                 spin_lock_bh(&priv->ps_state_lock);
2178                 cw1200_ps_notify(priv, arg->link_id, arg->stop);
2179                 spin_unlock_bh(&priv->ps_state_lock);
2180                 if (!arg->stop)
2181                         cw1200_bh_wakeup(priv);
2182         }
2183         return;
2184 }
2185
2186 /* ******************************************************************** */
2187 /* AP privates                                                          */
2188
2189 static int cw1200_upload_beacon(struct cw1200_common *priv)
2190 {
2191         int ret = 0;
2192         struct ieee80211_mgmt *mgmt;
2193         struct wsm_template_frame frame = {
2194                 .frame_type = WSM_FRAME_TYPE_BEACON,
2195         };
2196
2197         u16 tim_offset;
2198         u16 tim_len;
2199
2200         if (priv->mode == NL80211_IFTYPE_STATION ||
2201             priv->mode == NL80211_IFTYPE_MONITOR ||
2202             priv->mode == NL80211_IFTYPE_UNSPECIFIED)
2203                 goto done;
2204
2205         if (priv->vif->p2p)
2206                 frame.rate = WSM_TRANSMIT_RATE_6;
2207
2208         frame.skb = ieee80211_beacon_get_tim(priv->hw, priv->vif,
2209                                              &tim_offset, &tim_len);
2210         if (!frame.skb)
2211                 return -ENOMEM;
2212
2213         ret = wsm_set_template_frame(priv, &frame);
2214
2215         if (ret)
2216                 goto done;
2217
2218         /* TODO: Distill probe resp; remove TIM
2219          * and any other beacon-specific IEs
2220          */
2221         mgmt = (void *)frame.skb->data;
2222         mgmt->frame_control =
2223                 __cpu_to_le16(IEEE80211_FTYPE_MGMT |
2224                               IEEE80211_STYPE_PROBE_RESP);
2225
2226         frame.frame_type = WSM_FRAME_TYPE_PROBE_RESPONSE;
2227         if (priv->vif->p2p) {
2228                 ret = wsm_set_probe_responder(priv, true);
2229         } else {
2230                 ret = wsm_set_template_frame(priv, &frame);
2231                 wsm_set_probe_responder(priv, false);
2232         }
2233
2234 done:
2235         dev_kfree_skb(frame.skb);
2236
2237         return ret;
2238 }
2239
2240 static int cw1200_upload_pspoll(struct cw1200_common *priv)
2241 {
2242         int ret = 0;
2243         struct wsm_template_frame frame = {
2244                 .frame_type = WSM_FRAME_TYPE_PS_POLL,
2245                 .rate = 0xFF,
2246         };
2247
2248
2249         frame.skb = ieee80211_pspoll_get(priv->hw, priv->vif);
2250         if (!frame.skb)
2251                 return -ENOMEM;
2252
2253         ret = wsm_set_template_frame(priv, &frame);
2254
2255         dev_kfree_skb(frame.skb);
2256
2257         return ret;
2258 }
2259
2260 static int cw1200_upload_null(struct cw1200_common *priv)
2261 {
2262         int ret = 0;
2263         struct wsm_template_frame frame = {
2264                 .frame_type = WSM_FRAME_TYPE_NULL,
2265                 .rate = 0xFF,
2266         };
2267
2268         frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false);
2269         if (!frame.skb)
2270                 return -ENOMEM;
2271
2272         ret = wsm_set_template_frame(priv, &frame);
2273
2274         dev_kfree_skb(frame.skb);
2275
2276         return ret;
2277 }
2278
2279 static int cw1200_upload_qosnull(struct cw1200_common *priv)
2280 {
2281         /* TODO:  This needs to be implemented
2282
2283         struct wsm_template_frame frame = {
2284                 .frame_type = WSM_FRAME_TYPE_QOS_NULL,
2285                 .rate = 0xFF,
2286         };
2287
2288         frame.skb = ieee80211_qosnullfunc_get(priv->hw, priv->vif);
2289         if (!frame.skb)
2290                 return -ENOMEM;
2291
2292         ret = wsm_set_template_frame(priv, &frame);
2293
2294         dev_kfree_skb(frame.skb);
2295
2296         */
2297         return 0;
2298 }
2299
2300 static int cw1200_enable_beaconing(struct cw1200_common *priv,
2301                                    bool enable)
2302 {
2303         struct wsm_beacon_transmit transmit = {
2304                 .enable_beaconing = enable,
2305         };
2306
2307         return wsm_beacon_transmit(priv, &transmit);
2308 }
2309
2310 static int cw1200_start_ap(struct cw1200_common *priv)
2311 {
2312         int ret;
2313         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2314         struct wsm_start start = {
2315                 .mode = priv->vif->p2p ?
2316                                 WSM_START_MODE_P2P_GO : WSM_START_MODE_AP,
2317                 .band = (priv->channel->band == NL80211_BAND_5GHZ) ?
2318                                 WSM_PHY_BAND_5G : WSM_PHY_BAND_2_4G,
2319                 .channel_number = priv->channel->hw_value,
2320                 .beacon_interval = conf->beacon_int,
2321                 .dtim_period = conf->dtim_period,
2322                 .preamble = conf->use_short_preamble ?
2323                                 WSM_JOIN_PREAMBLE_SHORT :
2324                                 WSM_JOIN_PREAMBLE_LONG,
2325                 .probe_delay = 100,
2326                 .basic_rate_set = cw1200_rate_mask_to_wsm(priv,
2327                                 conf->basic_rates),
2328         };
2329         struct wsm_operational_mode mode = {
2330                 .power_mode = cw1200_power_mode,
2331                 .disable_more_flag_usage = true,
2332         };
2333
2334         memset(start.ssid, 0, sizeof(start.ssid));
2335         if (!conf->hidden_ssid) {
2336                 start.ssid_len = conf->ssid_len;
2337                 memcpy(start.ssid, conf->ssid, start.ssid_len);
2338         }
2339
2340         priv->beacon_int = conf->beacon_int;
2341         priv->join_dtim_period = conf->dtim_period;
2342
2343         memset(&priv->link_id_db, 0, sizeof(priv->link_id_db));
2344
2345         pr_debug("[AP] ch: %d(%d), bcn: %d(%d), brt: 0x%.8X, ssid: %.*s.\n",
2346                  start.channel_number, start.band,
2347                  start.beacon_interval, start.dtim_period,
2348                  start.basic_rate_set,
2349                  start.ssid_len, start.ssid);
2350         ret = wsm_start(priv, &start);
2351         if (!ret)
2352                 ret = cw1200_upload_keys(priv);
2353         if (!ret && priv->vif->p2p) {
2354                 pr_debug("[AP] Setting p2p powersave configuration.\n");
2355                 wsm_set_p2p_ps_modeinfo(priv, &priv->p2p_ps_modeinfo);
2356         }
2357         if (!ret) {
2358                 wsm_set_block_ack_policy(priv, 0, 0);
2359                 priv->join_status = CW1200_JOIN_STATUS_AP;
2360                 cw1200_update_filtering(priv);
2361         }
2362         wsm_set_operational_mode(priv, &mode);
2363         return ret;
2364 }
2365
2366 static int cw1200_update_beaconing(struct cw1200_common *priv)
2367 {
2368         struct ieee80211_bss_conf *conf = &priv->vif->bss_conf;
2369         struct wsm_reset reset = {
2370                 .link_id = 0,
2371                 .reset_statistics = true,
2372         };
2373
2374         if (priv->mode == NL80211_IFTYPE_AP) {
2375                 /* TODO: check if changed channel, band */
2376                 if (priv->join_status != CW1200_JOIN_STATUS_AP ||
2377                     priv->beacon_int != conf->beacon_int) {
2378                         pr_debug("ap restarting\n");
2379                         wsm_lock_tx(priv);
2380                         if (priv->join_status != CW1200_JOIN_STATUS_PASSIVE)
2381                                 wsm_reset(priv, &reset);
2382                         priv->join_status = CW1200_JOIN_STATUS_PASSIVE;
2383                         cw1200_start_ap(priv);
2384                         wsm_unlock_tx(priv);
2385                 } else
2386                         pr_debug("ap started join_status: %d\n",
2387                                  priv->join_status);
2388         }
2389         return 0;
2390 }