drivers/net/wireless/ti/wlcore/main.c

   1 /*
   2  * This file is part of wlcore
   3  *
   4  * Copyright (C) 2008-2010 Nokia Corporation
   5  * Copyright (C) 2011-2013 Texas Instruments Inc.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  19  * 02110-1301 USA
  20  *
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/firmware.h>
  25 #include <linux/etherdevice.h>
  26 #include <linux/vmalloc.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/irq.h>
  29
  30 #include "wlcore.h"
  31 #include "debug.h"
  32 #include "wl12xx_80211.h"
  33 #include "io.h"
  34 #include "tx.h"
  35 #include "ps.h"
  36 #include "init.h"
  37 #include "debugfs.h"
  38 #include "testmode.h"
  39 #include "vendor_cmd.h"
  40 #include "scan.h"
  41 #include "hw_ops.h"
  42 #include "sysfs.h"
  43
  44 #define WL1271_BOOT_RETRIES 3
  45
  46 static char *fwlog_param;
  47 static int fwlog_mem_blocks = -1;
  48 static int bug_on_recovery = -1;
  49 static int no_recovery     = -1;
  50
  51 static void __wl1271_op_remove_interface(struct wl1271 *wl,
  52                                          struct ieee80211_vif *vif,
  53                                          bool reset_tx_queues);
  54 static void wlcore_op_stop_locked(struct wl1271 *wl);
  55 static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif);
  56
  57 static int wl12xx_set_authorized(struct wl1271 *wl, struct wl12xx_vif *wlvif)
  58 {
  59         int ret;
  60
  61         if (WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS))
  62                 return -EINVAL;
  63
  64         if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
  65                 return 0;
  66
  67         if (test_and_set_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags))
  68                 return 0;
  69
  70         ret = wl12xx_cmd_set_peer_state(wl, wlvif, wlvif->sta.hlid);
  71         if (ret < 0)
  72                 return ret;
  73
  74         wl1271_info("Association completed.");
  75         return 0;
  76 }
  77
  78 static void wl1271_reg_notify(struct wiphy *wiphy,
  79                               struct regulatory_request *request)
  80 {
  81         struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
  82         struct wl1271 *wl = hw->priv;
  83
  84         /* copy the current dfs region */
  85         if (request)
  86                 wl->dfs_region = request->dfs_region;
  87
  88         wlcore_regdomain_config(wl);
  89 }
  90
  91 static int wl1271_set_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif,
  92                                    bool enable)
  93 {
  94         int ret = 0;
  95
  96         /* we should hold wl->mutex */
  97         ret = wl1271_acx_ps_rx_streaming(wl, wlvif, enable);
  98         if (ret < 0)
  99                 goto out;
 100
 101         if (enable)
 102                 set_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
 103         else
 104                 clear_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags);
 105 out:
 106         return ret;
 107 }
 108
 109 /*
 110  * this function is being called when the rx_streaming interval
 111  * has beed changed or rx_streaming should be disabled
 112  */
 113 int wl1271_recalc_rx_streaming(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 114 {
 115         int ret = 0;
 116         int period = wl->conf.rx_streaming.interval;
 117
 118         /* don't reconfigure if rx_streaming is disabled */
 119         if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
 120                 goto out;
 121
 122         /* reconfigure/disable according to new streaming_period */
 123         if (period &&
 124             test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
 125             (wl->conf.rx_streaming.always ||
 126              test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
 127                 ret = wl1271_set_rx_streaming(wl, wlvif, true);
 128         else {
 129                 ret = wl1271_set_rx_streaming(wl, wlvif, false);
 130                 /* don't cancel_work_sync since we might deadlock */
 131                 del_timer_sync(&wlvif->rx_streaming_timer);
 132         }
 133 out:
 134         return ret;
 135 }
 136
 137 static void wl1271_rx_streaming_enable_work(struct work_struct *work)
 138 {
 139         int ret;
 140         struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
 141                                                 rx_streaming_enable_work);
 142         struct wl1271 *wl = wlvif->wl;
 143
 144         mutex_lock(&wl->mutex);
 145
 146         if (test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags) ||
 147             !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) ||
 148             (!wl->conf.rx_streaming.always &&
 149              !test_bit(WL1271_FLAG_SOFT_GEMINI, &wl->flags)))
 150                 goto out;
 151
 152         if (!wl->conf.rx_streaming.interval)
 153                 goto out;
 154
 155         ret = wl1271_ps_elp_wakeup(wl);
 156         if (ret < 0)
 157                 goto out;
 158
 159         ret = wl1271_set_rx_streaming(wl, wlvif, true);
 160         if (ret < 0)
 161                 goto out_sleep;
 162
 163         /* stop it after some time of inactivity */
 164         mod_timer(&wlvif->rx_streaming_timer,
 165                   jiffies + msecs_to_jiffies(wl->conf.rx_streaming.duration));
 166
 167 out_sleep:
 168         wl1271_ps_elp_sleep(wl);
 169 out:
 170         mutex_unlock(&wl->mutex);
 171 }
 172
 173 static void wl1271_rx_streaming_disable_work(struct work_struct *work)
 174 {
 175         int ret;
 176         struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
 177                                                 rx_streaming_disable_work);
 178         struct wl1271 *wl = wlvif->wl;
 179
 180         mutex_lock(&wl->mutex);
 181
 182         if (!test_bit(WLVIF_FLAG_RX_STREAMING_STARTED, &wlvif->flags))
 183                 goto out;
 184
 185         ret = wl1271_ps_elp_wakeup(wl);
 186         if (ret < 0)
 187                 goto out;
 188
 189         ret = wl1271_set_rx_streaming(wl, wlvif, false);
 190         if (ret)
 191                 goto out_sleep;
 192
 193 out_sleep:
 194         wl1271_ps_elp_sleep(wl);
 195 out:
 196         mutex_unlock(&wl->mutex);
 197 }
 198
 199 static void wl1271_rx_streaming_timer(unsigned long data)
 200 {
 201         struct wl12xx_vif *wlvif = (struct wl12xx_vif *)data;
 202         struct wl1271 *wl = wlvif->wl;
 203         ieee80211_queue_work(wl->hw, &wlvif->rx_streaming_disable_work);
 204 }
 205
 206 /* wl->mutex must be taken */
 207 void wl12xx_rearm_tx_watchdog_locked(struct wl1271 *wl)
 208 {
 209         /* if the watchdog is not armed, don't do anything */
 210         if (wl->tx_allocated_blocks == 0)
 211                 return;
 212
 213         cancel_delayed_work(&wl->tx_watchdog_work);
 214         ieee80211_queue_delayed_work(wl->hw, &wl->tx_watchdog_work,
 215                 msecs_to_jiffies(wl->conf.tx.tx_watchdog_timeout));
 216 }
 217
 218 static void wlcore_rc_update_work(struct work_struct *work)
 219 {
 220         int ret;
 221         struct wl12xx_vif *wlvif = container_of(work, struct wl12xx_vif,
 222                                                 rc_update_work);
 223         struct wl1271 *wl = wlvif->wl;
 224         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 225
 226         mutex_lock(&wl->mutex);
 227
 228         if (unlikely(wl->state != WLCORE_STATE_ON))
 229                 goto out;
 230
 231         ret = wl1271_ps_elp_wakeup(wl);
 232         if (ret < 0)
 233                 goto out;
 234
 235         if (ieee80211_vif_is_mesh(vif)) {
 236                 ret = wl1271_acx_set_ht_capabilities(wl, &wlvif->rc_ht_cap,
 237                                                      true, wlvif->sta.hlid);
 238                 if (ret < 0)
 239                         goto out_sleep;
 240         } else {
 241                 wlcore_hw_sta_rc_update(wl, wlvif);
 242         }
 243
 244 out_sleep:
 245         wl1271_ps_elp_sleep(wl);
 246 out:
 247         mutex_unlock(&wl->mutex);
 248 }
 249
 250 static void wl12xx_tx_watchdog_work(struct work_struct *work)
 251 {
 252         struct delayed_work *dwork;
 253         struct wl1271 *wl;
 254
 255         dwork = to_delayed_work(work);
 256         wl = container_of(dwork, struct wl1271, tx_watchdog_work);
 257
 258         mutex_lock(&wl->mutex);
 259
 260         if (unlikely(wl->state != WLCORE_STATE_ON))
 261                 goto out;
 262
 263         /* Tx went out in the meantime - everything is ok */
 264         if (unlikely(wl->tx_allocated_blocks == 0))
 265                 goto out;
 266
 267         /*
 268          * if a ROC is in progress, we might not have any Tx for a long
 269          * time (e.g. pending Tx on the non-ROC channels)
 270          */
 271         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES) {
 272                 wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms due to ROC",
 273                              wl->conf.tx.tx_watchdog_timeout);
 274                 wl12xx_rearm_tx_watchdog_locked(wl);
 275                 goto out;
 276         }
 277
 278         /*
 279          * if a scan is in progress, we might not have any Tx for a long
 280          * time
 281          */
 282         if (wl->scan.state != WL1271_SCAN_STATE_IDLE) {
 283                 wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms due to scan",
 284                              wl->conf.tx.tx_watchdog_timeout);
 285                 wl12xx_rearm_tx_watchdog_locked(wl);
 286                 goto out;
 287         }
 288
 289         /*
 290         * AP might cache a frame for a long time for a sleeping station,
 291         * so rearm the timer if there's an AP interface with stations. If
 292         * Tx is genuinely stuck we will most hopefully discover it when all
 293         * stations are removed due to inactivity.
 294         */
 295         if (wl->active_sta_count) {
 296                 wl1271_debug(DEBUG_TX, "No Tx (in FW) for %d ms. AP has "
 297                              " %d stations",
 298                               wl->conf.tx.tx_watchdog_timeout,
 299                               wl->active_sta_count);
 300                 wl12xx_rearm_tx_watchdog_locked(wl);
 301                 goto out;
 302         }
 303
 304         wl1271_error("Tx stuck (in FW) for %d ms. Starting recovery",
 305                      wl->conf.tx.tx_watchdog_timeout);
 306         wl12xx_queue_recovery_work(wl);
 307
 308 out:
 309         mutex_unlock(&wl->mutex);
 310 }
 311
 312 static void wlcore_adjust_conf(struct wl1271 *wl)
 313 {
 314
 315         if (fwlog_param) {
 316                 if (!strcmp(fwlog_param, "continuous")) {
 317                         wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
 318                         wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_HOST;
 319                 } else if (!strcmp(fwlog_param, "dbgpins")) {
 320                         wl->conf.fwlog.mode = WL12XX_FWLOG_CONTINUOUS;
 321                         wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_DBG_PINS;
 322                 } else if (!strcmp(fwlog_param, "disable")) {
 323                         wl->conf.fwlog.mem_blocks = 0;
 324                         wl->conf.fwlog.output = WL12XX_FWLOG_OUTPUT_NONE;
 325                 } else {
 326                         wl1271_error("Unknown fwlog parameter %s", fwlog_param);
 327                 }
 328         }
 329
 330         if (bug_on_recovery != -1)
 331                 wl->conf.recovery.bug_on_recovery = (u8) bug_on_recovery;
 332
 333         if (no_recovery != -1)
 334                 wl->conf.recovery.no_recovery = (u8) no_recovery;
 335 }
 336
 337 static void wl12xx_irq_ps_regulate_link(struct wl1271 *wl,
 338                                         struct wl12xx_vif *wlvif,
 339                                         u8 hlid, u8 tx_pkts)
 340 {
 341         bool fw_ps;
 342
 343         fw_ps = test_bit(hlid, &wl->ap_fw_ps_map);
 344
 345         /*
 346          * Wake up from high level PS if the STA is asleep with too little
 347          * packets in FW or if the STA is awake.
 348          */
 349         if (!fw_ps || tx_pkts < WL1271_PS_STA_MAX_PACKETS)
 350                 wl12xx_ps_link_end(wl, wlvif, hlid);
 351
 352         /*
 353          * Start high-level PS if the STA is asleep with enough blocks in FW.
 354          * Make an exception if this is the only connected link. In this
 355          * case FW-memory congestion is less of a problem.
 356          * Note that a single connected STA means 2*ap_count + 1 active links,
 357          * since we must account for the global and broadcast AP links
 358          * for each AP. The "fw_ps" check assures us the other link is a STA
 359          * connected to the AP. Otherwise the FW would not set the PSM bit.
 360          */
 361         else if (wl->active_link_count > (wl->ap_count*2 + 1) && fw_ps &&
 362                  tx_pkts >= WL1271_PS_STA_MAX_PACKETS)
 363                 wl12xx_ps_link_start(wl, wlvif, hlid, true);
 364 }
 365
 366 static void wl12xx_irq_update_links_status(struct wl1271 *wl,
 367                                            struct wl12xx_vif *wlvif,
 368                                            struct wl_fw_status *status)
 369 {
 370         unsigned long cur_fw_ps_map;
 371         u8 hlid;
 372
 373         cur_fw_ps_map = status->link_ps_bitmap;
 374         if (wl->ap_fw_ps_map != cur_fw_ps_map) {
 375                 wl1271_debug(DEBUG_PSM,
 376                              "link ps prev 0x%lx cur 0x%lx changed 0x%lx",
 377                              wl->ap_fw_ps_map, cur_fw_ps_map,
 378                              wl->ap_fw_ps_map ^ cur_fw_ps_map);
 379
 380                 wl->ap_fw_ps_map = cur_fw_ps_map;
 381         }
 382
 383         for_each_set_bit(hlid, wlvif->ap.sta_hlid_map, wl->num_links)
 384                 wl12xx_irq_ps_regulate_link(wl, wlvif, hlid,
 385                                             wl->links[hlid].allocated_pkts);
 386 }
 387
 388 static int wlcore_fw_status(struct wl1271 *wl, struct wl_fw_status *status)
 389 {
 390         struct wl12xx_vif *wlvif;
 391         struct timespec ts;
 392         u32 old_tx_blk_count = wl->tx_blocks_available;
 393         int avail, freed_blocks;
 394         int i;
 395         int ret;
 396         struct wl1271_link *lnk;
 397
 398         ret = wlcore_raw_read_data(wl, REG_RAW_FW_STATUS_ADDR,
 399                                    wl->raw_fw_status,
 400                                    wl->fw_status_len, false);
 401         if (ret < 0)
 402                 return ret;
 403
 404         wlcore_hw_convert_fw_status(wl, wl->raw_fw_status, wl->fw_status);
 405
 406         wl1271_debug(DEBUG_IRQ, "intr: 0x%x (fw_rx_counter = %d, "
 407                      "drv_rx_counter = %d, tx_results_counter = %d)",
 408                      status->intr,
 409                      status->fw_rx_counter,
 410                      status->drv_rx_counter,
 411                      status->tx_results_counter);
 412
 413         for (i = 0; i < NUM_TX_QUEUES; i++) {
 414                 /* prevent wrap-around in freed-packets counter */
 415                 wl->tx_allocated_pkts[i] -=
 416                                 (status->counters.tx_released_pkts[i] -
 417                                 wl->tx_pkts_freed[i]) & 0xff;
 418
 419                 wl->tx_pkts_freed[i] = status->counters.tx_released_pkts[i];
 420         }
 421
 422
 423         for_each_set_bit(i, wl->links_map, wl->num_links) {
 424                 u8 diff;
 425                 lnk = &wl->links[i];
 426
 427                 /* prevent wrap-around in freed-packets counter */
 428                 diff = (status->counters.tx_lnk_free_pkts[i] -
 429                        lnk->prev_freed_pkts) & 0xff;
 430
 431                 if (diff == 0)
 432                         continue;
 433
 434                 lnk->allocated_pkts -= diff;
 435                 lnk->prev_freed_pkts = status->counters.tx_lnk_free_pkts[i];
 436
 437                 /* accumulate the prev_freed_pkts counter */
 438                 lnk->total_freed_pkts += diff;
 439         }
 440
 441         /* prevent wrap-around in total blocks counter */
 442         if (likely(wl->tx_blocks_freed <= status->total_released_blks))
 443                 freed_blocks = status->total_released_blks -
 444                                wl->tx_blocks_freed;
 445         else
 446                 freed_blocks = 0x100000000LL - wl->tx_blocks_freed +
 447                                status->total_released_blks;
 448
 449         wl->tx_blocks_freed = status->total_released_blks;
 450
 451         wl->tx_allocated_blocks -= freed_blocks;
 452
 453         /*
 454          * If the FW freed some blocks:
 455          * If we still have allocated blocks - re-arm the timer, Tx is
 456          * not stuck. Otherwise, cancel the timer (no Tx currently).
 457          */
 458         if (freed_blocks) {
 459                 if (wl->tx_allocated_blocks)
 460                         wl12xx_rearm_tx_watchdog_locked(wl);
 461                 else
 462                         cancel_delayed_work(&wl->tx_watchdog_work);
 463         }
 464
 465         avail = status->tx_total - wl->tx_allocated_blocks;
 466
 467         /*
 468          * The FW might change the total number of TX memblocks before
 469          * we get a notification about blocks being released. Thus, the
 470          * available blocks calculation might yield a temporary result
 471          * which is lower than the actual available blocks. Keeping in
 472          * mind that only blocks that were allocated can be moved from
 473          * TX to RX, tx_blocks_available should never decrease here.
 474          */
 475         wl->tx_blocks_available = max((int)wl->tx_blocks_available,
 476                                       avail);
 477
 478         /* if more blocks are available now, tx work can be scheduled */
 479         if (wl->tx_blocks_available > old_tx_blk_count)
 480                 clear_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags);
 481
 482         /* for AP update num of allocated TX blocks per link and ps status */
 483         wl12xx_for_each_wlvif_ap(wl, wlvif) {
 484                 wl12xx_irq_update_links_status(wl, wlvif, status);
 485         }
 486
 487         /* update the host-chipset time offset */
 488         getnstimeofday(&ts);
 489         wl->time_offset = (timespec_to_ns(&ts) >> 10) -
 490                 (s64)(status->fw_localtime);
 491
 492         wl->fw_fast_lnk_map = status->link_fast_bitmap;
 493
 494         return 0;
 495 }
 496
 497 static void wl1271_flush_deferred_work(struct wl1271 *wl)
 498 {
 499         struct sk_buff *skb;
 500
 501         /* Pass all received frames to the network stack */
 502         while ((skb = skb_dequeue(&wl->deferred_rx_queue)))
 503                 ieee80211_rx_ni(wl->hw, skb);
 504
 505         /* Return sent skbs to the network stack */
 506         while ((skb = skb_dequeue(&wl->deferred_tx_queue)))
 507                 ieee80211_tx_status_ni(wl->hw, skb);
 508 }
 509
 510 static void wl1271_netstack_work(struct work_struct *work)
 511 {
 512         struct wl1271 *wl =
 513                 container_of(work, struct wl1271, netstack_work);
 514
 515         do {
 516                 wl1271_flush_deferred_work(wl);
 517         } while (skb_queue_len(&wl->deferred_rx_queue));
 518 }
 519
 520 #define WL1271_IRQ_MAX_LOOPS 256
 521
 522 static int wlcore_irq_locked(struct wl1271 *wl)
 523 {
 524         int ret = 0;
 525         u32 intr;
 526         int loopcount = WL1271_IRQ_MAX_LOOPS;
 527         bool done = false;
 528         unsigned int defer_count;
 529         unsigned long flags;
 530
 531         /*
 532          * In case edge triggered interrupt must be used, we cannot iterate
 533          * more than once without introducing race conditions with the hardirq.
 534          */
 535         if (wl->irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING))
 536                 loopcount = 1;
 537
 538         wl1271_debug(DEBUG_IRQ, "IRQ work");
 539
 540         if (unlikely(wl->state != WLCORE_STATE_ON))
 541                 goto out;
 542
 543         ret = wl1271_ps_elp_wakeup(wl);
 544         if (ret < 0)
 545                 goto out;
 546
 547         while (!done && loopcount--) {
 548                 /*
 549                  * In order to avoid a race with the hardirq, clear the flag
 550                  * before acknowledging the chip. Since the mutex is held,
 551                  * wl1271_ps_elp_wakeup cannot be called concurrently.
 552                  */
 553                 clear_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
 554                 smp_mb__after_atomic();
 555
 556                 ret = wlcore_fw_status(wl, wl->fw_status);
 557                 if (ret < 0)
 558                         goto out;
 559
 560                 wlcore_hw_tx_immediate_compl(wl);
 561
 562                 intr = wl->fw_status->intr;
 563                 intr &= WLCORE_ALL_INTR_MASK;
 564                 if (!intr) {
 565                         done = true;
 566                         continue;
 567                 }
 568
 569                 if (unlikely(intr & WL1271_ACX_INTR_WATCHDOG)) {
 570                         wl1271_error("HW watchdog interrupt received! starting recovery.");
 571                         wl->watchdog_recovery = true;
 572                         ret = -EIO;
 573
 574                         /* restarting the chip. ignore any other interrupt. */
 575                         goto out;
 576                 }
 577
 578                 if (unlikely(intr & WL1271_ACX_SW_INTR_WATCHDOG)) {
 579                         wl1271_error("SW watchdog interrupt received! "
 580                                      "starting recovery.");
 581                         wl->watchdog_recovery = true;
 582                         ret = -EIO;
 583
 584                         /* restarting the chip. ignore any other interrupt. */
 585                         goto out;
 586                 }
 587
 588                 if (likely(intr & WL1271_ACX_INTR_DATA)) {
 589                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_DATA");
 590
 591                         ret = wlcore_rx(wl, wl->fw_status);
 592                         if (ret < 0)
 593                                 goto out;
 594
 595                         /* Check if any tx blocks were freed */
 596                         spin_lock_irqsave(&wl->wl_lock, flags);
 597                         if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
 598                             wl1271_tx_total_queue_count(wl) > 0) {
 599                                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 600                                 /*
 601                                  * In order to avoid starvation of the TX path,
 602                                  * call the work function directly.
 603                                  */
 604                                 ret = wlcore_tx_work_locked(wl);
 605                                 if (ret < 0)
 606                                         goto out;
 607                         } else {
 608                                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 609                         }
 610
 611                         /* check for tx results */
 612                         ret = wlcore_hw_tx_delayed_compl(wl);
 613                         if (ret < 0)
 614                                 goto out;
 615
 616                         /* Make sure the deferred queues don't get too long */
 617                         defer_count = skb_queue_len(&wl->deferred_tx_queue) +
 618                                       skb_queue_len(&wl->deferred_rx_queue);
 619                         if (defer_count > WL1271_DEFERRED_QUEUE_LIMIT)
 620                                 wl1271_flush_deferred_work(wl);
 621                 }
 622
 623                 if (intr & WL1271_ACX_INTR_EVENT_A) {
 624                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_A");
 625                         ret = wl1271_event_handle(wl, 0);
 626                         if (ret < 0)
 627                                 goto out;
 628                 }
 629
 630                 if (intr & WL1271_ACX_INTR_EVENT_B) {
 631                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_EVENT_B");
 632                         ret = wl1271_event_handle(wl, 1);
 633                         if (ret < 0)
 634                                 goto out;
 635                 }
 636
 637                 if (intr & WL1271_ACX_INTR_INIT_COMPLETE)
 638                         wl1271_debug(DEBUG_IRQ,
 639                                      "WL1271_ACX_INTR_INIT_COMPLETE");
 640
 641                 if (intr & WL1271_ACX_INTR_HW_AVAILABLE)
 642                         wl1271_debug(DEBUG_IRQ, "WL1271_ACX_INTR_HW_AVAILABLE");
 643         }
 644
 645         wl1271_ps_elp_sleep(wl);
 646
 647 out:
 648         return ret;
 649 }
 650
 651 static irqreturn_t wlcore_irq(int irq, void *cookie)
 652 {
 653         int ret;
 654         unsigned long flags;
 655         struct wl1271 *wl = cookie;
 656
 657         /* complete the ELP completion */
 658         spin_lock_irqsave(&wl->wl_lock, flags);
 659         set_bit(WL1271_FLAG_IRQ_RUNNING, &wl->flags);
 660         if (wl->elp_compl) {
 661                 complete(wl->elp_compl);
 662                 wl->elp_compl = NULL;
 663         }
 664
 665         if (test_bit(WL1271_FLAG_SUSPENDED, &wl->flags)) {
 666                 /* don't enqueue a work right now. mark it as pending */
 667                 set_bit(WL1271_FLAG_PENDING_WORK, &wl->flags);
 668                 wl1271_debug(DEBUG_IRQ, "should not enqueue work");
 669                 disable_irq_nosync(wl->irq);
 670                 pm_wakeup_event(wl->dev, 0);
 671                 spin_unlock_irqrestore(&wl->wl_lock, flags);
 672                 return IRQ_HANDLED;
 673         }
 674         spin_unlock_irqrestore(&wl->wl_lock, flags);
 675
 676         /* TX might be handled here, avoid redundant work */
 677         set_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
 678         cancel_work_sync(&wl->tx_work);
 679
 680         mutex_lock(&wl->mutex);
 681
 682         ret = wlcore_irq_locked(wl);
 683         if (ret)
 684                 wl12xx_queue_recovery_work(wl);
 685
 686         spin_lock_irqsave(&wl->wl_lock, flags);
 687         /* In case TX was not handled here, queue TX work */
 688         clear_bit(WL1271_FLAG_TX_PENDING, &wl->flags);
 689         if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
 690             wl1271_tx_total_queue_count(wl) > 0)
 691                 ieee80211_queue_work(wl->hw, &wl->tx_work);
 692         spin_unlock_irqrestore(&wl->wl_lock, flags);
 693
 694         mutex_unlock(&wl->mutex);
 695
 696         return IRQ_HANDLED;
 697 }
 698
 699 struct vif_counter_data {
 700         u8 counter;
 701
 702         struct ieee80211_vif *cur_vif;
 703         bool cur_vif_running;
 704 };
 705
 706 static void wl12xx_vif_count_iter(void *data, u8 *mac,
 707                                   struct ieee80211_vif *vif)
 708 {
 709         struct vif_counter_data *counter = data;
 710
 711         counter->counter++;
 712         if (counter->cur_vif == vif)
 713                 counter->cur_vif_running = true;
 714 }
 715
 716 /* caller must not hold wl->mutex, as it might deadlock */
 717 static void wl12xx_get_vif_count(struct ieee80211_hw *hw,
 718                                struct ieee80211_vif *cur_vif,
 719                                struct vif_counter_data *data)
 720 {
 721         memset(data, 0, sizeof(*data));
 722         data->cur_vif = cur_vif;
 723
 724         ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL,
 725                                             wl12xx_vif_count_iter, data);
 726 }
 727
 728 static int wl12xx_fetch_firmware(struct wl1271 *wl, bool plt)
 729 {
 730         const struct firmware *fw;
 731         const char *fw_name;
 732         enum wl12xx_fw_type fw_type;
 733         int ret;
 734
 735         if (plt) {
 736                 fw_type = WL12XX_FW_TYPE_PLT;
 737                 fw_name = wl->plt_fw_name;
 738         } else {
 739                 /*
 740                  * we can't call wl12xx_get_vif_count() here because
 741                  * wl->mutex is taken, so use the cached last_vif_count value
 742                  */
 743                 if (wl->last_vif_count > 1 && wl->mr_fw_name) {
 744                         fw_type = WL12XX_FW_TYPE_MULTI;
 745                         fw_name = wl->mr_fw_name;
 746                 } else {
 747                         fw_type = WL12XX_FW_TYPE_NORMAL;
 748                         fw_name = wl->sr_fw_name;
 749                 }
 750         }
 751
 752         if (wl->fw_type == fw_type)
 753                 return 0;
 754
 755         wl1271_debug(DEBUG_BOOT, "booting firmware %s", fw_name);
 756
 757         ret = request_firmware(&fw, fw_name, wl->dev);
 758
 759         if (ret < 0) {
 760                 wl1271_error("could not get firmware %s: %d", fw_name, ret);
 761                 return ret;
 762         }
 763
 764         if (fw->size % 4) {
 765                 wl1271_error("firmware size is not multiple of 32 bits: %zu",
 766                              fw->size);
 767                 ret = -EILSEQ;
 768                 goto out;
 769         }
 770
 771         vfree(wl->fw);
 772         wl->fw_type = WL12XX_FW_TYPE_NONE;
 773         wl->fw_len = fw->size;
 774         wl->fw = vmalloc(wl->fw_len);
 775
 776         if (!wl->fw) {
 777                 wl1271_error("could not allocate memory for the firmware");
 778                 ret = -ENOMEM;
 779                 goto out;
 780         }
 781
 782         memcpy(wl->fw, fw->data, wl->fw_len);
 783         ret = 0;
 784         wl->fw_type = fw_type;
 785 out:
 786         release_firmware(fw);
 787
 788         return ret;
 789 }
 790
 791 void wl12xx_queue_recovery_work(struct wl1271 *wl)
 792 {
 793         /* Avoid a recursive recovery */
 794         if (wl->state == WLCORE_STATE_ON) {
 795                 WARN_ON(!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY,
 796                                   &wl->flags));
 797
 798                 wl->state = WLCORE_STATE_RESTARTING;
 799                 set_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
 800                 wl1271_ps_elp_wakeup(wl);
 801                 wlcore_disable_interrupts_nosync(wl);
 802                 ieee80211_queue_work(wl->hw, &wl->recovery_work);
 803         }
 804 }
 805
 806 size_t wl12xx_copy_fwlog(struct wl1271 *wl, u8 *memblock, size_t maxlen)
 807 {
 808         size_t len;
 809
 810         /* Make sure we have enough room */
 811         len = min_t(size_t, maxlen, PAGE_SIZE - wl->fwlog_size);
 812
 813         /* Fill the FW log file, consumed by the sysfs fwlog entry */
 814         memcpy(wl->fwlog + wl->fwlog_size, memblock, len);
 815         wl->fwlog_size += len;
 816
 817         return len;
 818 }
 819
 820 static void wl12xx_read_fwlog_panic(struct wl1271 *wl)
 821 {
 822         u32 end_of_log = 0;
 823
 824         if (wl->quirks & WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED)
 825                 return;
 826
 827         wl1271_info("Reading FW panic log");
 828
 829         /*
 830          * Make sure the chip is awake and the logger isn't active.
 831          * Do not send a stop fwlog command if the fw is hanged or if
 832          * dbgpins are used (due to some fw bug).
 833          */
 834         if (wl1271_ps_elp_wakeup(wl))
 835                 return;
 836         if (!wl->watchdog_recovery &&
 837             wl->conf.fwlog.output != WL12XX_FWLOG_OUTPUT_DBG_PINS)
 838                 wl12xx_cmd_stop_fwlog(wl);
 839
 840         /* Traverse the memory blocks linked list */
 841         do {
 842                 end_of_log = wlcore_event_fw_logger(wl);
 843                 if (end_of_log == 0) {
 844                         msleep(100);
 845                         end_of_log = wlcore_event_fw_logger(wl);
 846                 }
 847         } while (end_of_log != 0);
 848 }
 849
 850 static void wlcore_save_freed_pkts(struct wl1271 *wl, struct wl12xx_vif *wlvif,
 851                                    u8 hlid, struct ieee80211_sta *sta)
 852 {
 853         struct wl1271_station *wl_sta;
 854         u32 sqn_recovery_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING;
 855
 856         wl_sta = (void *)sta->drv_priv;
 857         wl_sta->total_freed_pkts = wl->links[hlid].total_freed_pkts;
 858
 859         /*
 860          * increment the initial seq number on recovery to account for
 861          * transmitted packets that we haven't yet got in the FW status
 862          */
 863         if (wlvif->encryption_type == KEY_GEM)
 864                 sqn_recovery_padding = WL1271_TX_SQN_POST_RECOVERY_PADDING_GEM;
 865
 866         if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
 867                 wl_sta->total_freed_pkts += sqn_recovery_padding;
 868 }
 869
 870 static void wlcore_save_freed_pkts_addr(struct wl1271 *wl,
 871                                         struct wl12xx_vif *wlvif,
 872                                         u8 hlid, const u8 *addr)
 873 {
 874         struct ieee80211_sta *sta;
 875         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
 876
 877         if (WARN_ON(hlid == WL12XX_INVALID_LINK_ID ||
 878                     is_zero_ether_addr(addr)))
 879                 return;
 880
 881         rcu_read_lock();
 882         sta = ieee80211_find_sta(vif, addr);
 883         if (sta)
 884                 wlcore_save_freed_pkts(wl, wlvif, hlid, sta);
 885         rcu_read_unlock();
 886 }
 887
 888 static void wlcore_print_recovery(struct wl1271 *wl)
 889 {
 890         u32 pc = 0;
 891         u32 hint_sts = 0;
 892         int ret;
 893
 894         wl1271_info("Hardware recovery in progress. FW ver: %s",
 895                     wl->chip.fw_ver_str);
 896
 897         /* change partitions momentarily so we can read the FW pc */
 898         ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
 899         if (ret < 0)
 900                 return;
 901
 902         ret = wlcore_read_reg(wl, REG_PC_ON_RECOVERY, &pc);
 903         if (ret < 0)
 904                 return;
 905
 906         ret = wlcore_read_reg(wl, REG_INTERRUPT_NO_CLEAR, &hint_sts);
 907         if (ret < 0)
 908                 return;
 909
 910         wl1271_info("pc: 0x%x, hint_sts: 0x%08x count: %d",
 911                                 pc, hint_sts, ++wl->recovery_count);
 912
 913         wlcore_set_partition(wl, &wl->ptable[PART_WORK]);
 914 }
 915
 916
 917 static void wl1271_recovery_work(struct work_struct *work)
 918 {
 919         struct wl1271 *wl =
 920                 container_of(work, struct wl1271, recovery_work);
 921         struct wl12xx_vif *wlvif;
 922         struct ieee80211_vif *vif;
 923
 924         mutex_lock(&wl->mutex);
 925
 926         if (wl->state == WLCORE_STATE_OFF || wl->plt)
 927                 goto out_unlock;
 928
 929         if (!test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags)) {
 930                 if (wl->conf.fwlog.output == WL12XX_FWLOG_OUTPUT_HOST)
 931                         wl12xx_read_fwlog_panic(wl);
 932                 wlcore_print_recovery(wl);
 933         }
 934
 935         BUG_ON(wl->conf.recovery.bug_on_recovery &&
 936                !test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags));
 937
 938         if (wl->conf.recovery.no_recovery) {
 939                 wl1271_info("No recovery (chosen on module load). Fw will remain stuck.");
 940                 goto out_unlock;
 941         }
 942
 943         /* Prevent spurious TX during FW restart */
 944         wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
 945
 946         /* reboot the chipset */
 947         while (!list_empty(&wl->wlvif_list)) {
 948                 wlvif = list_first_entry(&wl->wlvif_list,
 949                                        struct wl12xx_vif, list);
 950                 vif = wl12xx_wlvif_to_vif(wlvif);
 951
 952                 if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
 953                     test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
 954                         wlcore_save_freed_pkts_addr(wl, wlvif, wlvif->sta.hlid,
 955                                                     vif->bss_conf.bssid);
 956                 }
 957
 958                 __wl1271_op_remove_interface(wl, vif, false);
 959         }
 960
 961         wlcore_op_stop_locked(wl);
 962
 963         ieee80211_restart_hw(wl->hw);
 964
 965         /*
 966          * Its safe to enable TX now - the queues are stopped after a request
 967          * to restart the HW.
 968          */
 969         wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_FW_RESTART);
 970
 971 out_unlock:
 972         wl->watchdog_recovery = false;
 973         clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags);
 974         mutex_unlock(&wl->mutex);
 975 }
 976
 977 static int wlcore_fw_wakeup(struct wl1271 *wl)
 978 {
 979         return wlcore_raw_write32(wl, HW_ACCESS_ELP_CTRL_REG, ELPCTRL_WAKE_UP);
 980 }
 981
 982 static int wl1271_setup(struct wl1271 *wl)
 983 {
 984         wl->raw_fw_status = kzalloc(wl->fw_status_len, GFP_KERNEL);
 985         if (!wl->raw_fw_status)
 986                 goto err;
 987
 988         wl->fw_status = kzalloc(sizeof(*wl->fw_status), GFP_KERNEL);
 989         if (!wl->fw_status)
 990                 goto err;
 991
 992         wl->tx_res_if = kzalloc(sizeof(*wl->tx_res_if), GFP_KERNEL);
 993         if (!wl->tx_res_if)
 994                 goto err;
 995
 996         return 0;
 997 err:
 998         kfree(wl->fw_status);
 999         kfree(wl->raw_fw_status);
1000         return -ENOMEM;
1001 }
1002
1003 static int wl12xx_set_power_on(struct wl1271 *wl)
1004 {
1005         int ret;
1006
1007         msleep(WL1271_PRE_POWER_ON_SLEEP);
1008         ret = wl1271_power_on(wl);
1009         if (ret < 0)
1010                 goto out;
1011         msleep(WL1271_POWER_ON_SLEEP);
1012         wl1271_io_reset(wl);
1013         wl1271_io_init(wl);
1014
1015         ret = wlcore_set_partition(wl, &wl->ptable[PART_BOOT]);
1016         if (ret < 0)
1017                 goto fail;
1018
1019         /* ELP module wake up */
1020         ret = wlcore_fw_wakeup(wl);
1021         if (ret < 0)
1022                 goto fail;
1023
1024 out:
1025         return ret;
1026
1027 fail:
1028         wl1271_power_off(wl);
1029         return ret;
1030 }
1031
1032 static int wl12xx_chip_wakeup(struct wl1271 *wl, bool plt)
1033 {
1034         int ret = 0;
1035
1036         ret = wl12xx_set_power_on(wl);
1037         if (ret < 0)
1038                 goto out;
1039
1040         /*
1041          * For wl127x based devices we could use the default block
1042          * size (512 bytes), but due to a bug in the sdio driver, we
1043          * need to set it explicitly after the chip is powered on.  To
1044          * simplify the code and since the performance impact is
1045          * negligible, we use the same block size for all different
1046          * chip types.
1047          *
1048          * Check if the bus supports blocksize alignment and, if it
1049          * doesn't, make sure we don't have the quirk.
1050          */
1051         if (!wl1271_set_block_size(wl))
1052                 wl->quirks &= ~WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN;
1053
1054         /* TODO: make sure the lower driver has set things up correctly */
1055
1056         ret = wl1271_setup(wl);
1057         if (ret < 0)
1058                 goto out;
1059
1060         ret = wl12xx_fetch_firmware(wl, plt);
1061         if (ret < 0)
1062                 goto out;
1063
1064 out:
1065         return ret;
1066 }
1067
1068 int wl1271_plt_start(struct wl1271 *wl, const enum plt_mode plt_mode)
1069 {
1070         int retries = WL1271_BOOT_RETRIES;
1071         struct wiphy *wiphy = wl->hw->wiphy;
1072
1073         static const char* const PLT_MODE[] = {
1074                 "PLT_OFF",
1075                 "PLT_ON",
1076                 "PLT_FEM_DETECT",
1077                 "PLT_CHIP_AWAKE"
1078         };
1079
1080         int ret;
1081
1082         mutex_lock(&wl->mutex);
1083
1084         wl1271_notice("power up");
1085
1086         if (wl->state != WLCORE_STATE_OFF) {
1087                 wl1271_error("cannot go into PLT state because not "
1088                              "in off state: %d", wl->state);
1089                 ret = -EBUSY;
1090                 goto out;
1091         }
1092
1093         /* Indicate to lower levels that we are now in PLT mode */
1094         wl->plt = true;
1095         wl->plt_mode = plt_mode;
1096
1097         while (retries) {
1098                 retries--;
1099                 ret = wl12xx_chip_wakeup(wl, true);
1100                 if (ret < 0)
1101                         goto power_off;
1102
1103                 if (plt_mode != PLT_CHIP_AWAKE) {
1104                         ret = wl->ops->plt_init(wl);
1105                         if (ret < 0)
1106                                 goto power_off;
1107                 }
1108
1109                 wl->state = WLCORE_STATE_ON;
1110                 wl1271_notice("firmware booted in PLT mode %s (%s)",
1111                               PLT_MODE[plt_mode],
1112                               wl->chip.fw_ver_str);
1113
1114                 /* update hw/fw version info in wiphy struct */
1115                 wiphy->hw_version = wl->chip.id;
1116                 strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
1117                         sizeof(wiphy->fw_version));
1118
1119                 goto out;
1120
1121 power_off:
1122                 wl1271_power_off(wl);
1123         }
1124
1125         wl->plt = false;
1126         wl->plt_mode = PLT_OFF;
1127
1128         wl1271_error("firmware boot in PLT mode failed despite %d retries",
1129                      WL1271_BOOT_RETRIES);
1130 out:
1131         mutex_unlock(&wl->mutex);
1132
1133         return ret;
1134 }
1135
1136 int wl1271_plt_stop(struct wl1271 *wl)
1137 {
1138         int ret = 0;
1139
1140         wl1271_notice("power down");
1141
1142         /*
1143          * Interrupts must be disabled before setting the state to OFF.
1144          * Otherwise, the interrupt handler might be called and exit without
1145          * reading the interrupt status.
1146          */
1147         wlcore_disable_interrupts(wl);
1148         mutex_lock(&wl->mutex);
1149         if (!wl->plt) {
1150                 mutex_unlock(&wl->mutex);
1151
1152                 /*
1153                  * This will not necessarily enable interrupts as interrupts
1154                  * may have been disabled when op_stop was called. It will,
1155                  * however, balance the above call to disable_interrupts().
1156                  */
1157                 wlcore_enable_interrupts(wl);
1158
1159                 wl1271_error("cannot power down because not in PLT "
1160                              "state: %d", wl->state);
1161                 ret = -EBUSY;
1162                 goto out;
1163         }
1164
1165         mutex_unlock(&wl->mutex);
1166
1167         wl1271_flush_deferred_work(wl);
1168         cancel_work_sync(&wl->netstack_work);
1169         cancel_work_sync(&wl->recovery_work);
1170         cancel_delayed_work_sync(&wl->elp_work);
1171         cancel_delayed_work_sync(&wl->tx_watchdog_work);
1172
1173         mutex_lock(&wl->mutex);
1174         wl1271_power_off(wl);
1175         wl->flags = 0;
1176         wl->sleep_auth = WL1271_PSM_ILLEGAL;
1177         wl->state = WLCORE_STATE_OFF;
1178         wl->plt = false;
1179         wl->plt_mode = PLT_OFF;
1180         wl->rx_counter = 0;
1181         mutex_unlock(&wl->mutex);
1182
1183 out:
1184         return ret;
1185 }
1186
1187 static void wl1271_op_tx(struct ieee80211_hw *hw,
1188                          struct ieee80211_tx_control *control,
1189                          struct sk_buff *skb)
1190 {
1191         struct wl1271 *wl = hw->priv;
1192         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1193         struct ieee80211_vif *vif = info->control.vif;
1194         struct wl12xx_vif *wlvif = NULL;
1195         unsigned long flags;
1196         int q, mapping;
1197         u8 hlid;
1198
1199         if (!vif) {
1200                 wl1271_debug(DEBUG_TX, "DROP skb with no vif");
1201                 ieee80211_free_txskb(hw, skb);
1202                 return;
1203         }
1204
1205         wlvif = wl12xx_vif_to_data(vif);
1206         mapping = skb_get_queue_mapping(skb);
1207         q = wl1271_tx_get_queue(mapping);
1208
1209         hlid = wl12xx_tx_get_hlid(wl, wlvif, skb, control->sta);
1210
1211         spin_lock_irqsave(&wl->wl_lock, flags);
1212
1213         /*
1214          * drop the packet if the link is invalid or the queue is stopped
1215          * for any reason but watermark. Watermark is a "soft"-stop so we
1216          * allow these packets through.
1217          */
1218         if (hlid == WL12XX_INVALID_LINK_ID ||
1219             (!test_bit(hlid, wlvif->links_map)) ||
1220              (wlcore_is_queue_stopped_locked(wl, wlvif, q) &&
1221               !wlcore_is_queue_stopped_by_reason_locked(wl, wlvif, q,
1222                         WLCORE_QUEUE_STOP_REASON_WATERMARK))) {
1223                 wl1271_debug(DEBUG_TX, "DROP skb hlid %d q %d", hlid, q);
1224                 ieee80211_free_txskb(hw, skb);
1225                 goto out;
1226         }
1227
1228         wl1271_debug(DEBUG_TX, "queue skb hlid %d q %d len %d",
1229                      hlid, q, skb->len);
1230         skb_queue_tail(&wl->links[hlid].tx_queue[q], skb);
1231
1232         wl->tx_queue_count[q]++;
1233         wlvif->tx_queue_count[q]++;
1234
1235         /*
1236          * The workqueue is slow to process the tx_queue and we need stop
1237          * the queue here, otherwise the queue will get too long.
1238          */
1239         if (wlvif->tx_queue_count[q] >= WL1271_TX_QUEUE_HIGH_WATERMARK &&
1240             !wlcore_is_queue_stopped_by_reason_locked(wl, wlvif, q,
1241                                         WLCORE_QUEUE_STOP_REASON_WATERMARK)) {
1242                 wl1271_debug(DEBUG_TX, "op_tx: stopping queues for q %d", q);
1243                 wlcore_stop_queue_locked(wl, wlvif, q,
1244                                          WLCORE_QUEUE_STOP_REASON_WATERMARK);
1245         }
1246
1247         /*
1248          * The chip specific setup must run before the first TX packet -
1249          * before that, the tx_work will not be initialized!
1250          */
1251
1252         if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags) &&
1253             !test_bit(WL1271_FLAG_TX_PENDING, &wl->flags))
1254                 ieee80211_queue_work(wl->hw, &wl->tx_work);
1255
1256 out:
1257         spin_unlock_irqrestore(&wl->wl_lock, flags);
1258 }
1259
1260 int wl1271_tx_dummy_packet(struct wl1271 *wl)
1261 {
1262         unsigned long flags;
1263         int q;
1264
1265         /* no need to queue a new dummy packet if one is already pending */
1266         if (test_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags))
1267                 return 0;
1268
1269         q = wl1271_tx_get_queue(skb_get_queue_mapping(wl->dummy_packet));
1270
1271         spin_lock_irqsave(&wl->wl_lock, flags);
1272         set_bit(WL1271_FLAG_DUMMY_PACKET_PENDING, &wl->flags);
1273         wl->tx_queue_count[q]++;
1274         spin_unlock_irqrestore(&wl->wl_lock, flags);
1275
1276         /* The FW is low on RX memory blocks, so send the dummy packet asap */
1277         if (!test_bit(WL1271_FLAG_FW_TX_BUSY, &wl->flags))
1278                 return wlcore_tx_work_locked(wl);
1279
1280         /*
1281          * If the FW TX is busy, TX work will be scheduled by the threaded
1282          * interrupt handler function
1283          */
1284         return 0;
1285 }
1286
1287 /*
1288  * The size of the dummy packet should be at least 1400 bytes. However, in
1289  * order to minimize the number of bus transactions, aligning it to 512 bytes
1290  * boundaries could be beneficial, performance wise
1291  */
1292 #define TOTAL_TX_DUMMY_PACKET_SIZE (ALIGN(1400, 512))
1293
1294 static struct sk_buff *wl12xx_alloc_dummy_packet(struct wl1271 *wl)
1295 {
1296         struct sk_buff *skb;
1297         struct ieee80211_hdr_3addr *hdr;
1298         unsigned int dummy_packet_size;
1299
1300         dummy_packet_size = TOTAL_TX_DUMMY_PACKET_SIZE -
1301                             sizeof(struct wl1271_tx_hw_descr) - sizeof(*hdr);
1302
1303         skb = dev_alloc_skb(TOTAL_TX_DUMMY_PACKET_SIZE);
1304         if (!skb) {
1305                 wl1271_warning("Failed to allocate a dummy packet skb");
1306                 return NULL;
1307         }
1308
1309         skb_reserve(skb, sizeof(struct wl1271_tx_hw_descr));
1310
1311         hdr = (struct ieee80211_hdr_3addr *) skb_put(skb, sizeof(*hdr));
1312         memset(hdr, 0, sizeof(*hdr));
1313         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
1314                                          IEEE80211_STYPE_NULLFUNC |
1315                                          IEEE80211_FCTL_TODS);
1316
1317         memset(skb_put(skb, dummy_packet_size), 0, dummy_packet_size);
1318
1319         /* Dummy packets require the TID to be management */
1320         skb->priority = WL1271_TID_MGMT;
1321
1322         /* Initialize all fields that might be used */
1323         skb_set_queue_mapping(skb, 0);
1324         memset(IEEE80211_SKB_CB(skb), 0, sizeof(struct ieee80211_tx_info));
1325
1326         return skb;
1327 }
1328
1329
1330 #ifdef CONFIG_PM
1331 static int
1332 wl1271_validate_wowlan_pattern(struct cfg80211_pkt_pattern *p)
1333 {
1334         int num_fields = 0, in_field = 0, fields_size = 0;
1335         int i, pattern_len = 0;
1336
1337         if (!p->mask) {
1338                 wl1271_warning("No mask in WoWLAN pattern");
1339                 return -EINVAL;
1340         }
1341
1342         /*
1343          * The pattern is broken up into segments of bytes at different offsets
1344          * that need to be checked by the FW filter. Each segment is called
1345          * a field in the FW API. We verify that the total number of fields
1346          * required for this pattern won't exceed FW limits (8)
1347          * as well as the total fields buffer won't exceed the FW limit.
1348          * Note that if there's a pattern which crosses Ethernet/IP header
1349          * boundary a new field is required.
1350          */
1351         for (i = 0; i < p->pattern_len; i++) {
1352                 if (test_bit(i, (unsigned long *)p->mask)) {
1353                         if (!in_field) {
1354                                 in_field = 1;
1355                                 pattern_len = 1;
1356                         } else {
1357                                 if (i == WL1271_RX_FILTER_ETH_HEADER_SIZE) {
1358                                         num_fields++;
1359                                         fields_size += pattern_len +
1360                                                 RX_FILTER_FIELD_OVERHEAD;
1361                                         pattern_len = 1;
1362                                 } else
1363                                         pattern_len++;
1364                         }
1365                 } else {
1366                         if (in_field) {
1367                                 in_field = 0;
1368                                 fields_size += pattern_len +
1369                                         RX_FILTER_FIELD_OVERHEAD;
1370                                 num_fields++;
1371                         }
1372                 }
1373         }
1374
1375         if (in_field) {
1376                 fields_size += pattern_len + RX_FILTER_FIELD_OVERHEAD;
1377                 num_fields++;
1378         }
1379
1380         if (num_fields > WL1271_RX_FILTER_MAX_FIELDS) {
1381                 wl1271_warning("RX Filter too complex. Too many segments");
1382                 return -EINVAL;
1383         }
1384
1385         if (fields_size > WL1271_RX_FILTER_MAX_FIELDS_SIZE) {
1386                 wl1271_warning("RX filter pattern is too big");
1387                 return -E2BIG;
1388         }
1389
1390         return 0;
1391 }
1392
1393 struct wl12xx_rx_filter *wl1271_rx_filter_alloc(void)
1394 {
1395         return kzalloc(sizeof(struct wl12xx_rx_filter), GFP_KERNEL);
1396 }
1397
1398 void wl1271_rx_filter_free(struct wl12xx_rx_filter *filter)
1399 {
1400         int i;
1401
1402         if (filter == NULL)
1403                 return;
1404
1405         for (i = 0; i < filter->num_fields; i++)
1406                 kfree(filter->fields[i].pattern);
1407
1408         kfree(filter);
1409 }
1410
1411 int wl1271_rx_filter_alloc_field(struct wl12xx_rx_filter *filter,
1412                                  u16 offset, u8 flags,
1413                                  const u8 *pattern, u8 len)
1414 {
1415         struct wl12xx_rx_filter_field *field;
1416
1417         if (filter->num_fields == WL1271_RX_FILTER_MAX_FIELDS) {
1418                 wl1271_warning("Max fields per RX filter. can't alloc another");
1419                 return -EINVAL;
1420         }
1421
1422         field = &filter->fields[filter->num_fields];
1423
1424         field->pattern = kzalloc(len, GFP_KERNEL);
1425         if (!field->pattern) {
1426                 wl1271_warning("Failed to allocate RX filter pattern");
1427                 return -ENOMEM;
1428         }
1429
1430         filter->num_fields++;
1431
1432         field->offset = cpu_to_le16(offset);
1433         field->flags = flags;
1434         field->len = len;
1435         memcpy(field->pattern, pattern, len);
1436
1437         return 0;
1438 }
1439
1440 int wl1271_rx_filter_get_fields_size(struct wl12xx_rx_filter *filter)
1441 {
1442         int i, fields_size = 0;
1443
1444         for (i = 0; i < filter->num_fields; i++)
1445                 fields_size += filter->fields[i].len +
1446                         sizeof(struct wl12xx_rx_filter_field) -
1447                         sizeof(u8 *);
1448
1449         return fields_size;
1450 }
1451
1452 void wl1271_rx_filter_flatten_fields(struct wl12xx_rx_filter *filter,
1453                                     u8 *buf)
1454 {
1455         int i;
1456         struct wl12xx_rx_filter_field *field;
1457
1458         for (i = 0; i < filter->num_fields; i++) {
1459                 field = (struct wl12xx_rx_filter_field *)buf;
1460
1461                 field->offset = filter->fields[i].offset;
1462                 field->flags = filter->fields[i].flags;
1463                 field->len = filter->fields[i].len;
1464
1465                 memcpy(&field->pattern, filter->fields[i].pattern, field->len);
1466                 buf += sizeof(struct wl12xx_rx_filter_field) -
1467                         sizeof(u8 *) + field->len;
1468         }
1469 }
1470
1471 /*
1472  * Allocates an RX filter returned through f
1473  * which needs to be freed using rx_filter_free()
1474  */
1475 static int
1476 wl1271_convert_wowlan_pattern_to_rx_filter(struct cfg80211_pkt_pattern *p,
1477                                            struct wl12xx_rx_filter **f)
1478 {
1479         int i, j, ret = 0;
1480         struct wl12xx_rx_filter *filter;
1481         u16 offset;
1482         u8 flags, len;
1483
1484         filter = wl1271_rx_filter_alloc();
1485         if (!filter) {
1486                 wl1271_warning("Failed to alloc rx filter");
1487                 ret = -ENOMEM;
1488                 goto err;
1489         }
1490
1491         i = 0;
1492         while (i < p->pattern_len) {
1493                 if (!test_bit(i, (unsigned long *)p->mask)) {
1494                         i++;
1495                         continue;
1496                 }
1497
1498                 for (j = i; j < p->pattern_len; j++) {
1499                         if (!test_bit(j, (unsigned long *)p->mask))
1500                                 break;
1501
1502                         if (i < WL1271_RX_FILTER_ETH_HEADER_SIZE &&
1503                             j >= WL1271_RX_FILTER_ETH_HEADER_SIZE)
1504                                 break;
1505                 }
1506
1507                 if (i < WL1271_RX_FILTER_ETH_HEADER_SIZE) {
1508                         offset = i;
1509                         flags = WL1271_RX_FILTER_FLAG_ETHERNET_HEADER;
1510                 } else {
1511                         offset = i - WL1271_RX_FILTER_ETH_HEADER_SIZE;
1512                         flags = WL1271_RX_FILTER_FLAG_IP_HEADER;
1513                 }
1514
1515                 len = j - i;
1516
1517                 ret = wl1271_rx_filter_alloc_field(filter,
1518                                                    offset,
1519                                                    flags,
1520                                                    &p->pattern[i], len);
1521                 if (ret)
1522                         goto err;
1523
1524                 i = j;
1525         }
1526
1527         filter->action = FILTER_SIGNAL;
1528
1529         *f = filter;
1530         return 0;
1531
1532 err:
1533         wl1271_rx_filter_free(filter);
1534         *f = NULL;
1535
1536         return ret;
1537 }
1538
1539 static int wl1271_configure_wowlan(struct wl1271 *wl,
1540                                    struct cfg80211_wowlan *wow)
1541 {
1542         int i, ret;
1543
1544         if (!wow || wow->any || !wow->n_patterns) {
1545                 ret = wl1271_acx_default_rx_filter_enable(wl, 0,
1546                                                           FILTER_SIGNAL);
1547                 if (ret)
1548                         goto out;
1549
1550                 ret = wl1271_rx_filter_clear_all(wl);
1551                 if (ret)
1552                         goto out;
1553
1554                 return 0;
1555         }
1556
1557         if (WARN_ON(wow->n_patterns > WL1271_MAX_RX_FILTERS))
1558                 return -EINVAL;
1559
1560         /* Validate all incoming patterns before clearing current FW state */
1561         for (i = 0; i < wow->n_patterns; i++) {
1562                 ret = wl1271_validate_wowlan_pattern(&wow->patterns[i]);
1563                 if (ret) {
1564                         wl1271_warning("Bad wowlan pattern %d", i);
1565                         return ret;
1566                 }
1567         }
1568
1569         ret = wl1271_acx_default_rx_filter_enable(wl, 0, FILTER_SIGNAL);
1570         if (ret)
1571                 goto out;
1572
1573         ret = wl1271_rx_filter_clear_all(wl);
1574         if (ret)
1575                 goto out;
1576
1577         /* Translate WoWLAN patterns into filters */
1578         for (i = 0; i < wow->n_patterns; i++) {
1579                 struct cfg80211_pkt_pattern *p;
1580                 struct wl12xx_rx_filter *filter = NULL;
1581
1582                 p = &wow->patterns[i];
1583
1584                 ret = wl1271_convert_wowlan_pattern_to_rx_filter(p, &filter);
1585                 if (ret) {
1586                         wl1271_warning("Failed to create an RX filter from "
1587                                        "wowlan pattern %d", i);
1588                         goto out;
1589                 }
1590
1591                 ret = wl1271_rx_filter_enable(wl, i, 1, filter);
1592
1593                 wl1271_rx_filter_free(filter);
1594                 if (ret)
1595                         goto out;
1596         }
1597
1598         ret = wl1271_acx_default_rx_filter_enable(wl, 1, FILTER_DROP);
1599
1600 out:
1601         return ret;
1602 }
1603
1604 static int wl1271_configure_suspend_sta(struct wl1271 *wl,
1605                                         struct wl12xx_vif *wlvif,
1606                                         struct cfg80211_wowlan *wow)
1607 {
1608         int ret = 0;
1609
1610         if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
1611                 goto out;
1612
1613         ret = wl1271_configure_wowlan(wl, wow);
1614         if (ret < 0)
1615                 goto out;
1616
1617         if ((wl->conf.conn.suspend_wake_up_event ==
1618              wl->conf.conn.wake_up_event) &&
1619             (wl->conf.conn.suspend_listen_interval ==
1620              wl->conf.conn.listen_interval))
1621                 goto out;
1622
1623         ret = wl1271_acx_wake_up_conditions(wl, wlvif,
1624                                     wl->conf.conn.suspend_wake_up_event,
1625                                     wl->conf.conn.suspend_listen_interval);
1626
1627         if (ret < 0)
1628                 wl1271_error("suspend: set wake up conditions failed: %d", ret);
1629 out:
1630         return ret;
1631
1632 }
1633
1634 static int wl1271_configure_suspend_ap(struct wl1271 *wl,
1635                                         struct wl12xx_vif *wlvif,
1636                                         struct cfg80211_wowlan *wow)
1637 {
1638         int ret = 0;
1639
1640         if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags))
1641                 goto out;
1642
1643         ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true);
1644         if (ret < 0)
1645                 goto out;
1646
1647         ret = wl1271_configure_wowlan(wl, wow);
1648         if (ret < 0)
1649                 goto out;
1650
1651 out:
1652         return ret;
1653
1654 }
1655
1656 static int wl1271_configure_suspend(struct wl1271 *wl,
1657                                     struct wl12xx_vif *wlvif,
1658                                     struct cfg80211_wowlan *wow)
1659 {
1660         if (wlvif->bss_type == BSS_TYPE_STA_BSS)
1661                 return wl1271_configure_suspend_sta(wl, wlvif, wow);
1662         if (wlvif->bss_type == BSS_TYPE_AP_BSS)
1663                 return wl1271_configure_suspend_ap(wl, wlvif, wow);
1664         return 0;
1665 }
1666
1667 static void wl1271_configure_resume(struct wl1271 *wl, struct wl12xx_vif *wlvif)
1668 {
1669         int ret = 0;
1670         bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
1671         bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
1672
1673         if ((!is_ap) && (!is_sta))
1674                 return;
1675
1676         if ((is_sta && !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) ||
1677             (is_ap && !test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)))
1678                 return;
1679
1680         wl1271_configure_wowlan(wl, NULL);
1681
1682         if (is_sta) {
1683                 if ((wl->conf.conn.suspend_wake_up_event ==
1684                      wl->conf.conn.wake_up_event) &&
1685                     (wl->conf.conn.suspend_listen_interval ==
1686                      wl->conf.conn.listen_interval))
1687                         return;
1688
1689                 ret = wl1271_acx_wake_up_conditions(wl, wlvif,
1690                                     wl->conf.conn.wake_up_event,
1691                                     wl->conf.conn.listen_interval);
1692
1693                 if (ret < 0)
1694                         wl1271_error("resume: wake up conditions failed: %d",
1695                                      ret);
1696
1697         } else if (is_ap) {
1698                 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
1699         }
1700 }
1701
1702 static int wl1271_op_suspend(struct ieee80211_hw *hw,
1703                             struct cfg80211_wowlan *wow)
1704 {
1705         struct wl1271 *wl = hw->priv;
1706         struct wl12xx_vif *wlvif;
1707         int ret;
1708
1709         wl1271_debug(DEBUG_MAC80211, "mac80211 suspend wow=%d", !!wow);
1710         WARN_ON(!wow);
1711
1712         /* we want to perform the recovery before suspending */
1713         if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
1714                 wl1271_warning("postponing suspend to perform recovery");
1715                 return -EBUSY;
1716         }
1717
1718         wl1271_tx_flush(wl);
1719
1720         mutex_lock(&wl->mutex);
1721
1722         ret = wl1271_ps_elp_wakeup(wl);
1723         if (ret < 0) {
1724                 mutex_unlock(&wl->mutex);
1725                 return ret;
1726         }
1727
1728         wl->wow_enabled = true;
1729         wl12xx_for_each_wlvif(wl, wlvif) {
1730                 if (wlcore_is_p2p_mgmt(wlvif))
1731                         continue;
1732
1733                 ret = wl1271_configure_suspend(wl, wlvif, wow);
1734                 if (ret < 0) {
1735                         mutex_unlock(&wl->mutex);
1736                         wl1271_warning("couldn't prepare device to suspend");
1737                         return ret;
1738                 }
1739         }
1740
1741         /* disable fast link flow control notifications from FW */
1742         ret = wlcore_hw_interrupt_notify(wl, false);
1743         if (ret < 0)
1744                 goto out_sleep;
1745
1746         /* if filtering is enabled, configure the FW to drop all RX BA frames */
1747         ret = wlcore_hw_rx_ba_filter(wl,
1748                                      !!wl->conf.conn.suspend_rx_ba_activity);
1749         if (ret < 0)
1750                 goto out_sleep;
1751
1752 out_sleep:
1753         wl1271_ps_elp_sleep(wl);
1754         mutex_unlock(&wl->mutex);
1755
1756         if (ret < 0) {
1757                 wl1271_warning("couldn't prepare device to suspend");
1758                 return ret;
1759         }
1760
1761         /* flush any remaining work */
1762         wl1271_debug(DEBUG_MAC80211, "flushing remaining works");
1763
1764         /*
1765          * disable and re-enable interrupts in order to flush
1766          * the threaded_irq
1767          */
1768         wlcore_disable_interrupts(wl);
1769
1770         /*
1771          * set suspended flag to avoid triggering a new threaded_irq
1772          * work. no need for spinlock as interrupts are disabled.
1773          */
1774         set_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1775
1776         wlcore_enable_interrupts(wl);
1777         flush_work(&wl->tx_work);
1778         flush_delayed_work(&wl->elp_work);
1779
1780         /*
1781          * Cancel the watchdog even if above tx_flush failed. We will detect
1782          * it on resume anyway.
1783          */
1784         cancel_delayed_work(&wl->tx_watchdog_work);
1785
1786         return 0;
1787 }
1788
1789 static int wl1271_op_resume(struct ieee80211_hw *hw)
1790 {
1791         struct wl1271 *wl = hw->priv;
1792         struct wl12xx_vif *wlvif;
1793         unsigned long flags;
1794         bool run_irq_work = false, pending_recovery;
1795         int ret;
1796
1797         wl1271_debug(DEBUG_MAC80211, "mac80211 resume wow=%d",
1798                      wl->wow_enabled);
1799         WARN_ON(!wl->wow_enabled);
1800
1801         /*
1802          * re-enable irq_work enqueuing, and call irq_work directly if
1803          * there is a pending work.
1804          */
1805         spin_lock_irqsave(&wl->wl_lock, flags);
1806         clear_bit(WL1271_FLAG_SUSPENDED, &wl->flags);
1807         if (test_and_clear_bit(WL1271_FLAG_PENDING_WORK, &wl->flags))
1808                 run_irq_work = true;
1809         spin_unlock_irqrestore(&wl->wl_lock, flags);
1810
1811         mutex_lock(&wl->mutex);
1812
1813         /* test the recovery flag before calling any SDIO functions */
1814         pending_recovery = test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS,
1815                                     &wl->flags);
1816
1817         if (run_irq_work) {
1818                 wl1271_debug(DEBUG_MAC80211,
1819                              "run postponed irq_work directly");
1820
1821                 /* don't talk to the HW if recovery is pending */
1822                 if (!pending_recovery) {
1823                         ret = wlcore_irq_locked(wl);
1824                         if (ret)
1825                                 wl12xx_queue_recovery_work(wl);
1826                 }
1827
1828                 wlcore_enable_interrupts(wl);
1829         }
1830
1831         if (pending_recovery) {
1832                 wl1271_warning("queuing forgotten recovery on resume");
1833                 ieee80211_queue_work(wl->hw, &wl->recovery_work);
1834                 goto out_sleep;
1835         }
1836
1837         ret = wl1271_ps_elp_wakeup(wl);
1838         if (ret < 0)
1839                 goto out;
1840
1841         wl12xx_for_each_wlvif(wl, wlvif) {
1842                 if (wlcore_is_p2p_mgmt(wlvif))
1843                         continue;
1844
1845                 wl1271_configure_resume(wl, wlvif);
1846         }
1847
1848         ret = wlcore_hw_interrupt_notify(wl, true);
1849         if (ret < 0)
1850                 goto out_sleep;
1851
1852         /* if filtering is enabled, configure the FW to drop all RX BA frames */
1853         ret = wlcore_hw_rx_ba_filter(wl, false);
1854         if (ret < 0)
1855                 goto out_sleep;
1856
1857 out_sleep:
1858         wl1271_ps_elp_sleep(wl);
1859
1860 out:
1861         wl->wow_enabled = false;
1862
1863         /*
1864          * Set a flag to re-init the watchdog on the first Tx after resume.
1865          * That way we avoid possible conditions where Tx-complete interrupts
1866          * fail to arrive and we perform a spurious recovery.
1867          */
1868         set_bit(WL1271_FLAG_REINIT_TX_WDOG, &wl->flags);
1869         mutex_unlock(&wl->mutex);
1870
1871         return 0;
1872 }
1873 #endif
1874
1875 static int wl1271_op_start(struct ieee80211_hw *hw)
1876 {
1877         wl1271_debug(DEBUG_MAC80211, "mac80211 start");
1878
1879         /*
1880          * We have to delay the booting of the hardware because
1881          * we need to know the local MAC address before downloading and
1882          * initializing the firmware. The MAC address cannot be changed
1883          * after boot, and without the proper MAC address, the firmware
1884          * will not function properly.
1885          *
1886          * The MAC address is first known when the corresponding interface
1887          * is added. That is where we will initialize the hardware.
1888          */
1889
1890         return 0;
1891 }
1892
1893 static void wlcore_op_stop_locked(struct wl1271 *wl)
1894 {
1895         int i;
1896
1897         if (wl->state == WLCORE_STATE_OFF) {
1898                 if (test_and_clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS,
1899                                         &wl->flags))
1900                         wlcore_enable_interrupts(wl);
1901
1902                 return;
1903         }
1904
1905         /*
1906          * this must be before the cancel_work calls below, so that the work
1907          * functions don't perform further work.
1908          */
1909         wl->state = WLCORE_STATE_OFF;
1910
1911         /*
1912          * Use the nosync variant to disable interrupts, so the mutex could be
1913          * held while doing so without deadlocking.
1914          */
1915         wlcore_disable_interrupts_nosync(wl);
1916
1917         mutex_unlock(&wl->mutex);
1918
1919         wlcore_synchronize_interrupts(wl);
1920         if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
1921                 cancel_work_sync(&wl->recovery_work);
1922         wl1271_flush_deferred_work(wl);
1923         cancel_delayed_work_sync(&wl->scan_complete_work);
1924         cancel_work_sync(&wl->netstack_work);
1925         cancel_work_sync(&wl->tx_work);
1926         cancel_delayed_work_sync(&wl->elp_work);
1927         cancel_delayed_work_sync(&wl->tx_watchdog_work);
1928
1929         /* let's notify MAC80211 about the remaining pending TX frames */
1930         mutex_lock(&wl->mutex);
1931         wl12xx_tx_reset(wl);
1932
1933         wl1271_power_off(wl);
1934         /*
1935          * In case a recovery was scheduled, interrupts were disabled to avoid
1936          * an interrupt storm. Now that the power is down, it is safe to
1937          * re-enable interrupts to balance the disable depth
1938          */
1939         if (test_and_clear_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags))
1940                 wlcore_enable_interrupts(wl);
1941
1942         wl->band = NL80211_BAND_2GHZ;
1943
1944         wl->rx_counter = 0;
1945         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
1946         wl->channel_type = NL80211_CHAN_NO_HT;
1947         wl->tx_blocks_available = 0;
1948         wl->tx_allocated_blocks = 0;
1949         wl->tx_results_count = 0;
1950         wl->tx_packets_count = 0;
1951         wl->time_offset = 0;
1952         wl->ap_fw_ps_map = 0;
1953         wl->ap_ps_map = 0;
1954         wl->sleep_auth = WL1271_PSM_ILLEGAL;
1955         memset(wl->roles_map, 0, sizeof(wl->roles_map));
1956         memset(wl->links_map, 0, sizeof(wl->links_map));
1957         memset(wl->roc_map, 0, sizeof(wl->roc_map));
1958         memset(wl->session_ids, 0, sizeof(wl->session_ids));
1959         memset(wl->rx_filter_enabled, 0, sizeof(wl->rx_filter_enabled));
1960         wl->active_sta_count = 0;
1961         wl->active_link_count = 0;
1962
1963         /* The system link is always allocated */
1964         wl->links[WL12XX_SYSTEM_HLID].allocated_pkts = 0;
1965         wl->links[WL12XX_SYSTEM_HLID].prev_freed_pkts = 0;
1966         __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
1967
1968         /*
1969          * this is performed after the cancel_work calls and the associated
1970          * mutex_lock, so that wl1271_op_add_interface does not accidentally
1971          * get executed before all these vars have been reset.
1972          */
1973         wl->flags = 0;
1974
1975         wl->tx_blocks_freed = 0;
1976
1977         for (i = 0; i < NUM_TX_QUEUES; i++) {
1978                 wl->tx_pkts_freed[i] = 0;
1979                 wl->tx_allocated_pkts[i] = 0;
1980         }
1981
1982         wl1271_debugfs_reset(wl);
1983
1984         kfree(wl->raw_fw_status);
1985         wl->raw_fw_status = NULL;
1986         kfree(wl->fw_status);
1987         wl->fw_status = NULL;
1988         kfree(wl->tx_res_if);
1989         wl->tx_res_if = NULL;
1990         kfree(wl->target_mem_map);
1991         wl->target_mem_map = NULL;
1992
1993         /*
1994          * FW channels must be re-calibrated after recovery,
1995          * save current Reg-Domain channel configuration and clear it.
1996          */
1997         memcpy(wl->reg_ch_conf_pending, wl->reg_ch_conf_last,
1998                sizeof(wl->reg_ch_conf_pending));
1999         memset(wl->reg_ch_conf_last, 0, sizeof(wl->reg_ch_conf_last));
2000 }
2001
2002 static void wlcore_op_stop(struct ieee80211_hw *hw)
2003 {
2004         struct wl1271 *wl = hw->priv;
2005
2006         wl1271_debug(DEBUG_MAC80211, "mac80211 stop");
2007
2008         mutex_lock(&wl->mutex);
2009
2010         wlcore_op_stop_locked(wl);
2011
2012         mutex_unlock(&wl->mutex);
2013 }
2014
2015 static void wlcore_channel_switch_work(struct work_struct *work)
2016 {
2017         struct delayed_work *dwork;
2018         struct wl1271 *wl;
2019         struct ieee80211_vif *vif;
2020         struct wl12xx_vif *wlvif;
2021         int ret;
2022
2023         dwork = to_delayed_work(work);
2024         wlvif = container_of(dwork, struct wl12xx_vif, channel_switch_work);
2025         wl = wlvif->wl;
2026
2027         wl1271_info("channel switch failed (role_id: %d).", wlvif->role_id);
2028
2029         mutex_lock(&wl->mutex);
2030
2031         if (unlikely(wl->state != WLCORE_STATE_ON))
2032                 goto out;
2033
2034         /* check the channel switch is still ongoing */
2035         if (!test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags))
2036                 goto out;
2037
2038         vif = wl12xx_wlvif_to_vif(wlvif);
2039         ieee80211_chswitch_done(vif, false);
2040
2041         ret = wl1271_ps_elp_wakeup(wl);
2042         if (ret < 0)
2043                 goto out;
2044
2045         wl12xx_cmd_stop_channel_switch(wl, wlvif);
2046
2047         wl1271_ps_elp_sleep(wl);
2048 out:
2049         mutex_unlock(&wl->mutex);
2050 }
2051
2052 static void wlcore_connection_loss_work(struct work_struct *work)
2053 {
2054         struct delayed_work *dwork;
2055         struct wl1271 *wl;
2056         struct ieee80211_vif *vif;
2057         struct wl12xx_vif *wlvif;
2058
2059         dwork = to_delayed_work(work);
2060         wlvif = container_of(dwork, struct wl12xx_vif, connection_loss_work);
2061         wl = wlvif->wl;
2062
2063         wl1271_info("Connection loss work (role_id: %d).", wlvif->role_id);
2064
2065         mutex_lock(&wl->mutex);
2066
2067         if (unlikely(wl->state != WLCORE_STATE_ON))
2068                 goto out;
2069
2070         /* Call mac80211 connection loss */
2071         if (!test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2072                 goto out;
2073
2074         vif = wl12xx_wlvif_to_vif(wlvif);
2075         ieee80211_connection_loss(vif);
2076 out:
2077         mutex_unlock(&wl->mutex);
2078 }
2079
2080 static void wlcore_pending_auth_complete_work(struct work_struct *work)
2081 {
2082         struct delayed_work *dwork;
2083         struct wl1271 *wl;
2084         struct wl12xx_vif *wlvif;
2085         unsigned long time_spare;
2086         int ret;
2087
2088         dwork = to_delayed_work(work);
2089         wlvif = container_of(dwork, struct wl12xx_vif,
2090                              pending_auth_complete_work);
2091         wl = wlvif->wl;
2092
2093         mutex_lock(&wl->mutex);
2094
2095         if (unlikely(wl->state != WLCORE_STATE_ON))
2096                 goto out;
2097
2098         /*
2099          * Make sure a second really passed since the last auth reply. Maybe
2100          * a second auth reply arrived while we were stuck on the mutex.
2101          * Check for a little less than the timeout to protect from scheduler
2102          * irregularities.
2103          */
2104         time_spare = jiffies +
2105                         msecs_to_jiffies(WLCORE_PEND_AUTH_ROC_TIMEOUT - 50);
2106         if (!time_after(time_spare, wlvif->pending_auth_reply_time))
2107                 goto out;
2108
2109         ret = wl1271_ps_elp_wakeup(wl);
2110         if (ret < 0)
2111                 goto out;
2112
2113         /* cancel the ROC if active */
2114         wlcore_update_inconn_sta(wl, wlvif, NULL, false);
2115
2116         wl1271_ps_elp_sleep(wl);
2117 out:
2118         mutex_unlock(&wl->mutex);
2119 }
2120
2121 static int wl12xx_allocate_rate_policy(struct wl1271 *wl, u8 *idx)
2122 {
2123         u8 policy = find_first_zero_bit(wl->rate_policies_map,
2124                                         WL12XX_MAX_RATE_POLICIES);
2125         if (policy >= WL12XX_MAX_RATE_POLICIES)
2126                 return -EBUSY;
2127
2128         __set_bit(policy, wl->rate_policies_map);
2129         *idx = policy;
2130         return 0;
2131 }
2132
2133 static void wl12xx_free_rate_policy(struct wl1271 *wl, u8 *idx)
2134 {
2135         if (WARN_ON(*idx >= WL12XX_MAX_RATE_POLICIES))
2136                 return;
2137
2138         __clear_bit(*idx, wl->rate_policies_map);
2139         *idx = WL12XX_MAX_RATE_POLICIES;
2140 }
2141
2142 static int wlcore_allocate_klv_template(struct wl1271 *wl, u8 *idx)
2143 {
2144         u8 policy = find_first_zero_bit(wl->klv_templates_map,
2145                                         WLCORE_MAX_KLV_TEMPLATES);
2146         if (policy >= WLCORE_MAX_KLV_TEMPLATES)
2147                 return -EBUSY;
2148
2149         __set_bit(policy, wl->klv_templates_map);
2150         *idx = policy;
2151         return 0;
2152 }
2153
2154 static void wlcore_free_klv_template(struct wl1271 *wl, u8 *idx)
2155 {
2156         if (WARN_ON(*idx >= WLCORE_MAX_KLV_TEMPLATES))
2157                 return;
2158
2159         __clear_bit(*idx, wl->klv_templates_map);
2160         *idx = WLCORE_MAX_KLV_TEMPLATES;
2161 }
2162
2163 static u8 wl12xx_get_role_type(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2164 {
2165         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
2166
2167         switch (wlvif->bss_type) {
2168         case BSS_TYPE_AP_BSS:
2169                 if (wlvif->p2p)
2170                         return WL1271_ROLE_P2P_GO;
2171                 else if (ieee80211_vif_is_mesh(vif))
2172                         return WL1271_ROLE_MESH_POINT;
2173                 else
2174                         return WL1271_ROLE_AP;
2175
2176         case BSS_TYPE_STA_BSS:
2177                 if (wlvif->p2p)
2178                         return WL1271_ROLE_P2P_CL;
2179                 else
2180                         return WL1271_ROLE_STA;
2181
2182         case BSS_TYPE_IBSS:
2183                 return WL1271_ROLE_IBSS;
2184
2185         default:
2186                 wl1271_error("invalid bss_type: %d", wlvif->bss_type);
2187         }
2188         return WL12XX_INVALID_ROLE_TYPE;
2189 }
2190
2191 static int wl12xx_init_vif_data(struct wl1271 *wl, struct ieee80211_vif *vif)
2192 {
2193         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2194         int i;
2195
2196         /* clear everything but the persistent data */
2197         memset(wlvif, 0, offsetof(struct wl12xx_vif, persistent));
2198
2199         switch (ieee80211_vif_type_p2p(vif)) {
2200         case NL80211_IFTYPE_P2P_CLIENT:
2201                 wlvif->p2p = 1;
2202                 /* fall-through */
2203         case NL80211_IFTYPE_STATION:
2204         case NL80211_IFTYPE_P2P_DEVICE:
2205                 wlvif->bss_type = BSS_TYPE_STA_BSS;
2206                 break;
2207         case NL80211_IFTYPE_ADHOC:
2208                 wlvif->bss_type = BSS_TYPE_IBSS;
2209                 break;
2210         case NL80211_IFTYPE_P2P_GO:
2211                 wlvif->p2p = 1;
2212                 /* fall-through */
2213         case NL80211_IFTYPE_AP:
2214         case NL80211_IFTYPE_MESH_POINT:
2215                 wlvif->bss_type = BSS_TYPE_AP_BSS;
2216                 break;
2217         default:
2218                 wlvif->bss_type = MAX_BSS_TYPE;
2219                 return -EOPNOTSUPP;
2220         }
2221
2222         wlvif->role_id = WL12XX_INVALID_ROLE_ID;
2223         wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
2224         wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
2225
2226         if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2227             wlvif->bss_type == BSS_TYPE_IBSS) {
2228                 /* init sta/ibss data */
2229                 wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
2230                 wl12xx_allocate_rate_policy(wl, &wlvif->sta.basic_rate_idx);
2231                 wl12xx_allocate_rate_policy(wl, &wlvif->sta.ap_rate_idx);
2232                 wl12xx_allocate_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
2233                 wlcore_allocate_klv_template(wl, &wlvif->sta.klv_template_id);
2234                 wlvif->basic_rate_set = CONF_TX_RATE_MASK_BASIC;
2235                 wlvif->basic_rate = CONF_TX_RATE_MASK_BASIC;
2236                 wlvif->rate_set = CONF_TX_RATE_MASK_BASIC;
2237         } else {
2238                 /* init ap data */
2239                 wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
2240                 wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
2241                 wl12xx_allocate_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
2242                 wl12xx_allocate_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
2243                 for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++)
2244                         wl12xx_allocate_rate_policy(wl,
2245                                                 &wlvif->ap.ucast_rate_idx[i]);
2246                 wlvif->basic_rate_set = CONF_TX_ENABLED_RATES;
2247                 /*
2248                  * TODO: check if basic_rate shouldn't be
2249                  * wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
2250                  * instead (the same thing for STA above).
2251                 */
2252                 wlvif->basic_rate = CONF_TX_ENABLED_RATES;
2253                 /* TODO: this seems to be used only for STA, check it */
2254                 wlvif->rate_set = CONF_TX_ENABLED_RATES;
2255         }
2256
2257         wlvif->bitrate_masks[NL80211_BAND_2GHZ] = wl->conf.tx.basic_rate;
2258         wlvif->bitrate_masks[NL80211_BAND_5GHZ] = wl->conf.tx.basic_rate_5;
2259         wlvif->beacon_int = WL1271_DEFAULT_BEACON_INT;
2260
2261         /*
2262          * mac80211 configures some values globally, while we treat them
2263          * per-interface. thus, on init, we have to copy them from wl
2264          */
2265         wlvif->band = wl->band;
2266         wlvif->channel = wl->channel;
2267         wlvif->power_level = wl->power_level;
2268         wlvif->channel_type = wl->channel_type;
2269
2270         INIT_WORK(&wlvif->rx_streaming_enable_work,
2271                   wl1271_rx_streaming_enable_work);
2272         INIT_WORK(&wlvif->rx_streaming_disable_work,
2273                   wl1271_rx_streaming_disable_work);
2274         INIT_WORK(&wlvif->rc_update_work, wlcore_rc_update_work);
2275         INIT_DELAYED_WORK(&wlvif->channel_switch_work,
2276                           wlcore_channel_switch_work);
2277         INIT_DELAYED_WORK(&wlvif->connection_loss_work,
2278                           wlcore_connection_loss_work);
2279         INIT_DELAYED_WORK(&wlvif->pending_auth_complete_work,
2280                           wlcore_pending_auth_complete_work);
2281         INIT_LIST_HEAD(&wlvif->list);
2282
2283         setup_timer(&wlvif->rx_streaming_timer, wl1271_rx_streaming_timer,
2284                     (unsigned long) wlvif);
2285         return 0;
2286 }
2287
2288 static int wl12xx_init_fw(struct wl1271 *wl)
2289 {
2290         int retries = WL1271_BOOT_RETRIES;
2291         bool booted = false;
2292         struct wiphy *wiphy = wl->hw->wiphy;
2293         int ret;
2294
2295         while (retries) {
2296                 retries--;
2297                 ret = wl12xx_chip_wakeup(wl, false);
2298                 if (ret < 0)
2299                         goto power_off;
2300
2301                 ret = wl->ops->boot(wl);
2302                 if (ret < 0)
2303                         goto power_off;
2304
2305                 ret = wl1271_hw_init(wl);
2306                 if (ret < 0)
2307                         goto irq_disable;
2308
2309                 booted = true;
2310                 break;
2311
2312 irq_disable:
2313                 mutex_unlock(&wl->mutex);
2314                 /* Unlocking the mutex in the middle of handling is
2315                    inherently unsafe. In this case we deem it safe to do,
2316                    because we need to let any possibly pending IRQ out of
2317                    the system (and while we are WLCORE_STATE_OFF the IRQ
2318                    work function will not do anything.) Also, any other
2319                    possible concurrent operations will fail due to the
2320                    current state, hence the wl1271 struct should be safe. */
2321                 wlcore_disable_interrupts(wl);
2322                 wl1271_flush_deferred_work(wl);
2323                 cancel_work_sync(&wl->netstack_work);
2324                 mutex_lock(&wl->mutex);
2325 power_off:
2326                 wl1271_power_off(wl);
2327         }
2328
2329         if (!booted) {
2330                 wl1271_error("firmware boot failed despite %d retries",
2331                              WL1271_BOOT_RETRIES);
2332                 goto out;
2333         }
2334
2335         wl1271_info("firmware booted (%s)", wl->chip.fw_ver_str);
2336
2337         /* update hw/fw version info in wiphy struct */
2338         wiphy->hw_version = wl->chip.id;
2339         strncpy(wiphy->fw_version, wl->chip.fw_ver_str,
2340                 sizeof(wiphy->fw_version));
2341
2342         /*
2343          * Now we know if 11a is supported (info from the NVS), so disable
2344          * 11a channels if not supported
2345          */
2346         if (!wl->enable_11a)
2347                 wiphy->bands[NL80211_BAND_5GHZ]->n_channels = 0;
2348
2349         wl1271_debug(DEBUG_MAC80211, "11a is %ssupported",
2350                      wl->enable_11a ? "" : "not ");
2351
2352         wl->state = WLCORE_STATE_ON;
2353 out:
2354         return ret;
2355 }
2356
2357 static bool wl12xx_dev_role_started(struct wl12xx_vif *wlvif)
2358 {
2359         return wlvif->dev_hlid != WL12XX_INVALID_LINK_ID;
2360 }
2361
2362 /*
2363  * Check whether a fw switch (i.e. moving from one loaded
2364  * fw to another) is needed. This function is also responsible
2365  * for updating wl->last_vif_count, so it must be called before
2366  * loading a non-plt fw (so the correct fw (single-role/multi-role)
2367  * will be used).
2368  */
2369 static bool wl12xx_need_fw_change(struct wl1271 *wl,
2370                                   struct vif_counter_data vif_counter_data,
2371                                   bool add)
2372 {
2373         enum wl12xx_fw_type current_fw = wl->fw_type;
2374         u8 vif_count = vif_counter_data.counter;
2375
2376         if (test_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags))
2377                 return false;
2378
2379         /* increase the vif count if this is a new vif */
2380         if (add && !vif_counter_data.cur_vif_running)
2381                 vif_count++;
2382
2383         wl->last_vif_count = vif_count;
2384
2385         /* no need for fw change if the device is OFF */
2386         if (wl->state == WLCORE_STATE_OFF)
2387                 return false;
2388
2389         /* no need for fw change if a single fw is used */
2390         if (!wl->mr_fw_name)
2391                 return false;
2392
2393         if (vif_count > 1 && current_fw == WL12XX_FW_TYPE_NORMAL)
2394                 return true;
2395         if (vif_count <= 1 && current_fw == WL12XX_FW_TYPE_MULTI)
2396                 return true;
2397
2398         return false;
2399 }
2400
2401 /*
2402  * Enter "forced psm". Make sure the sta is in psm against the ap,
2403  * to make the fw switch a bit more disconnection-persistent.
2404  */
2405 static void wl12xx_force_active_psm(struct wl1271 *wl)
2406 {
2407         struct wl12xx_vif *wlvif;
2408
2409         wl12xx_for_each_wlvif_sta(wl, wlvif) {
2410                 wl1271_ps_set_mode(wl, wlvif, STATION_POWER_SAVE_MODE);
2411         }
2412 }
2413
2414 struct wlcore_hw_queue_iter_data {
2415         unsigned long hw_queue_map[BITS_TO_LONGS(WLCORE_NUM_MAC_ADDRESSES)];
2416         /* current vif */
2417         struct ieee80211_vif *vif;
2418         /* is the current vif among those iterated */
2419         bool cur_running;
2420 };
2421
2422 static void wlcore_hw_queue_iter(void *data, u8 *mac,
2423                                  struct ieee80211_vif *vif)
2424 {
2425         struct wlcore_hw_queue_iter_data *iter_data = data;
2426
2427         if (vif->type == NL80211_IFTYPE_P2P_DEVICE ||
2428             WARN_ON_ONCE(vif->hw_queue[0] == IEEE80211_INVAL_HW_QUEUE))
2429                 return;
2430
2431         if (iter_data->cur_running || vif == iter_data->vif) {
2432                 iter_data->cur_running = true;
2433                 return;
2434         }
2435
2436         __set_bit(vif->hw_queue[0] / NUM_TX_QUEUES, iter_data->hw_queue_map);
2437 }
2438
2439 static int wlcore_allocate_hw_queue_base(struct wl1271 *wl,
2440                                          struct wl12xx_vif *wlvif)
2441 {
2442         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
2443         struct wlcore_hw_queue_iter_data iter_data = {};
2444         int i, q_base;
2445
2446         if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
2447                 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
2448                 return 0;
2449         }
2450
2451         iter_data.vif = vif;
2452
2453         /* mark all bits taken by active interfaces */
2454         ieee80211_iterate_active_interfaces_atomic(wl->hw,
2455                                         IEEE80211_IFACE_ITER_RESUME_ALL,
2456                                         wlcore_hw_queue_iter, &iter_data);
2457
2458         /* the current vif is already running in mac80211 (resume/recovery) */
2459         if (iter_data.cur_running) {
2460                 wlvif->hw_queue_base = vif->hw_queue[0];
2461                 wl1271_debug(DEBUG_MAC80211,
2462                              "using pre-allocated hw queue base %d",
2463                              wlvif->hw_queue_base);
2464
2465                 /* interface type might have changed type */
2466                 goto adjust_cab_queue;
2467         }
2468
2469         q_base = find_first_zero_bit(iter_data.hw_queue_map,
2470                                      WLCORE_NUM_MAC_ADDRESSES);
2471         if (q_base >= WLCORE_NUM_MAC_ADDRESSES)
2472                 return -EBUSY;
2473
2474         wlvif->hw_queue_base = q_base * NUM_TX_QUEUES;
2475         wl1271_debug(DEBUG_MAC80211, "allocating hw queue base: %d",
2476                      wlvif->hw_queue_base);
2477
2478         for (i = 0; i < NUM_TX_QUEUES; i++) {
2479                 wl->queue_stop_reasons[wlvif->hw_queue_base + i] = 0;
2480                 /* register hw queues in mac80211 */
2481                 vif->hw_queue[i] = wlvif->hw_queue_base + i;
2482         }
2483
2484 adjust_cab_queue:
2485         /* the last places are reserved for cab queues per interface */
2486         if (wlvif->bss_type == BSS_TYPE_AP_BSS)
2487                 vif->cab_queue = NUM_TX_QUEUES * WLCORE_NUM_MAC_ADDRESSES +
2488                                  wlvif->hw_queue_base / NUM_TX_QUEUES;
2489         else
2490                 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
2491
2492         return 0;
2493 }
2494
2495 static int wl1271_op_add_interface(struct ieee80211_hw *hw,
2496                                    struct ieee80211_vif *vif)
2497 {
2498         struct wl1271 *wl = hw->priv;
2499         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2500         struct vif_counter_data vif_count;
2501         int ret = 0;
2502         u8 role_type;
2503
2504         if (wl->plt) {
2505                 wl1271_error("Adding Interface not allowed while in PLT mode");
2506                 return -EBUSY;
2507         }
2508
2509         vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
2510                              IEEE80211_VIF_SUPPORTS_UAPSD |
2511                              IEEE80211_VIF_SUPPORTS_CQM_RSSI;
2512
2513         wl1271_debug(DEBUG_MAC80211, "mac80211 add interface type %d mac %pM",
2514                      ieee80211_vif_type_p2p(vif), vif->addr);
2515
2516         wl12xx_get_vif_count(hw, vif, &vif_count);
2517
2518         mutex_lock(&wl->mutex);
2519         ret = wl1271_ps_elp_wakeup(wl);
2520         if (ret < 0)
2521                 goto out_unlock;
2522
2523         /*
2524          * in some very corner case HW recovery scenarios its possible to
2525          * get here before __wl1271_op_remove_interface is complete, so
2526          * opt out if that is the case.
2527          */
2528         if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) ||
2529             test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)) {
2530                 ret = -EBUSY;
2531                 goto out;
2532         }
2533
2534
2535         ret = wl12xx_init_vif_data(wl, vif);
2536         if (ret < 0)
2537                 goto out;
2538
2539         wlvif->wl = wl;
2540         role_type = wl12xx_get_role_type(wl, wlvif);
2541         if (role_type == WL12XX_INVALID_ROLE_TYPE) {
2542                 ret = -EINVAL;
2543                 goto out;
2544         }
2545
2546         ret = wlcore_allocate_hw_queue_base(wl, wlvif);
2547         if (ret < 0)
2548                 goto out;
2549
2550         if (wl12xx_need_fw_change(wl, vif_count, true)) {
2551                 wl12xx_force_active_psm(wl);
2552                 set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
2553                 mutex_unlock(&wl->mutex);
2554                 wl1271_recovery_work(&wl->recovery_work);
2555                 return 0;
2556         }
2557
2558         /*
2559          * TODO: after the nvs issue will be solved, move this block
2560          * to start(), and make sure here the driver is ON.
2561          */
2562         if (wl->state == WLCORE_STATE_OFF) {
2563                 /*
2564                  * we still need this in order to configure the fw
2565                  * while uploading the nvs
2566                  */
2567                 memcpy(wl->addresses[0].addr, vif->addr, ETH_ALEN);
2568
2569                 ret = wl12xx_init_fw(wl);
2570                 if (ret < 0)
2571                         goto out;
2572         }
2573
2574         if (!wlcore_is_p2p_mgmt(wlvif)) {
2575                 ret = wl12xx_cmd_role_enable(wl, vif->addr,
2576                                              role_type, &wlvif->role_id);
2577                 if (ret < 0)
2578                         goto out;
2579
2580                 ret = wl1271_init_vif_specific(wl, vif);
2581                 if (ret < 0)
2582                         goto out;
2583
2584         } else {
2585                 ret = wl12xx_cmd_role_enable(wl, vif->addr, WL1271_ROLE_DEVICE,
2586                                              &wlvif->dev_role_id);
2587                 if (ret < 0)
2588                         goto out;
2589
2590                 /* needed mainly for configuring rate policies */
2591                 ret = wl1271_sta_hw_init(wl, wlvif);
2592                 if (ret < 0)
2593                         goto out;
2594         }
2595
2596         list_add(&wlvif->list, &wl->wlvif_list);
2597         set_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags);
2598
2599         if (wlvif->bss_type == BSS_TYPE_AP_BSS)
2600                 wl->ap_count++;
2601         else
2602                 wl->sta_count++;
2603 out:
2604         wl1271_ps_elp_sleep(wl);
2605 out_unlock:
2606         mutex_unlock(&wl->mutex);
2607
2608         return ret;
2609 }
2610
2611 static void __wl1271_op_remove_interface(struct wl1271 *wl,
2612                                          struct ieee80211_vif *vif,
2613                                          bool reset_tx_queues)
2614 {
2615         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2616         int i, ret;
2617         bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
2618
2619         wl1271_debug(DEBUG_MAC80211, "mac80211 remove interface");
2620
2621         if (!test_and_clear_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
2622                 return;
2623
2624         /* because of hardware recovery, we may get here twice */
2625         if (wl->state == WLCORE_STATE_OFF)
2626                 return;
2627
2628         wl1271_info("down");
2629
2630         if (wl->scan.state != WL1271_SCAN_STATE_IDLE &&
2631             wl->scan_wlvif == wlvif) {
2632                 struct cfg80211_scan_info info = {
2633                         .aborted = true,
2634                 };
2635
2636                 /*
2637                  * Rearm the tx watchdog just before idling scan. This
2638                  * prevents just-finished scans from triggering the watchdog
2639                  */
2640                 wl12xx_rearm_tx_watchdog_locked(wl);
2641
2642                 wl->scan.state = WL1271_SCAN_STATE_IDLE;
2643                 memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
2644                 wl->scan_wlvif = NULL;
2645                 wl->scan.req = NULL;
2646                 ieee80211_scan_completed(wl->hw, &info);
2647         }
2648
2649         if (wl->sched_vif == wlvif)
2650                 wl->sched_vif = NULL;
2651
2652         if (wl->roc_vif == vif) {
2653                 wl->roc_vif = NULL;
2654                 ieee80211_remain_on_channel_expired(wl->hw);
2655         }
2656
2657         if (!test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags)) {
2658                 /* disable active roles */
2659                 ret = wl1271_ps_elp_wakeup(wl);
2660                 if (ret < 0)
2661                         goto deinit;
2662
2663                 if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2664                     wlvif->bss_type == BSS_TYPE_IBSS) {
2665                         if (wl12xx_dev_role_started(wlvif))
2666                                 wl12xx_stop_dev(wl, wlvif);
2667                 }
2668
2669                 if (!wlcore_is_p2p_mgmt(wlvif)) {
2670                         ret = wl12xx_cmd_role_disable(wl, &wlvif->role_id);
2671                         if (ret < 0)
2672                                 goto deinit;
2673                 } else {
2674                         ret = wl12xx_cmd_role_disable(wl, &wlvif->dev_role_id);
2675                         if (ret < 0)
2676                                 goto deinit;
2677                 }
2678
2679                 wl1271_ps_elp_sleep(wl);
2680         }
2681 deinit:
2682         wl12xx_tx_reset_wlvif(wl, wlvif);
2683
2684         /* clear all hlids (except system_hlid) */
2685         wlvif->dev_hlid = WL12XX_INVALID_LINK_ID;
2686
2687         if (wlvif->bss_type == BSS_TYPE_STA_BSS ||
2688             wlvif->bss_type == BSS_TYPE_IBSS) {
2689                 wlvif->sta.hlid = WL12XX_INVALID_LINK_ID;
2690                 wl12xx_free_rate_policy(wl, &wlvif->sta.basic_rate_idx);
2691                 wl12xx_free_rate_policy(wl, &wlvif->sta.ap_rate_idx);
2692                 wl12xx_free_rate_policy(wl, &wlvif->sta.p2p_rate_idx);
2693                 wlcore_free_klv_template(wl, &wlvif->sta.klv_template_id);
2694         } else {
2695                 wlvif->ap.bcast_hlid = WL12XX_INVALID_LINK_ID;
2696                 wlvif->ap.global_hlid = WL12XX_INVALID_LINK_ID;
2697                 wl12xx_free_rate_policy(wl, &wlvif->ap.mgmt_rate_idx);
2698                 wl12xx_free_rate_policy(wl, &wlvif->ap.bcast_rate_idx);
2699                 for (i = 0; i < CONF_TX_MAX_AC_COUNT; i++)
2700                         wl12xx_free_rate_policy(wl,
2701                                                 &wlvif->ap.ucast_rate_idx[i]);
2702                 wl1271_free_ap_keys(wl, wlvif);
2703         }
2704
2705         dev_kfree_skb(wlvif->probereq);
2706         wlvif->probereq = NULL;
2707         if (wl->last_wlvif == wlvif)
2708                 wl->last_wlvif = NULL;
2709         list_del(&wlvif->list);
2710         memset(wlvif->ap.sta_hlid_map, 0, sizeof(wlvif->ap.sta_hlid_map));
2711         wlvif->role_id = WL12XX_INVALID_ROLE_ID;
2712         wlvif->dev_role_id = WL12XX_INVALID_ROLE_ID;
2713
2714         if (is_ap)
2715                 wl->ap_count--;
2716         else
2717                 wl->sta_count--;
2718
2719         /*
2720          * Last AP, have more stations. Configure sleep auth according to STA.
2721          * Don't do thin on unintended recovery.
2722          */
2723         if (test_bit(WL1271_FLAG_RECOVERY_IN_PROGRESS, &wl->flags) &&
2724             !test_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags))
2725                 goto unlock;
2726
2727         if (wl->ap_count == 0 && is_ap) {
2728                 /* mask ap events */
2729                 wl->event_mask &= ~wl->ap_event_mask;
2730                 wl1271_event_unmask(wl);
2731         }
2732
2733         if (wl->ap_count == 0 && is_ap && wl->sta_count) {
2734                 u8 sta_auth = wl->conf.conn.sta_sleep_auth;
2735                 /* Configure for power according to debugfs */
2736                 if (sta_auth != WL1271_PSM_ILLEGAL)
2737                         wl1271_acx_sleep_auth(wl, sta_auth);
2738                 /* Configure for ELP power saving */
2739                 else
2740                         wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);
2741         }
2742
2743 unlock:
2744         mutex_unlock(&wl->mutex);
2745
2746         del_timer_sync(&wlvif->rx_streaming_timer);
2747         cancel_work_sync(&wlvif->rx_streaming_enable_work);
2748         cancel_work_sync(&wlvif->rx_streaming_disable_work);
2749         cancel_work_sync(&wlvif->rc_update_work);
2750         cancel_delayed_work_sync(&wlvif->connection_loss_work);
2751         cancel_delayed_work_sync(&wlvif->channel_switch_work);
2752         cancel_delayed_work_sync(&wlvif->pending_auth_complete_work);
2753
2754         mutex_lock(&wl->mutex);
2755 }
2756
2757 static void wl1271_op_remove_interface(struct ieee80211_hw *hw,
2758                                        struct ieee80211_vif *vif)
2759 {
2760         struct wl1271 *wl = hw->priv;
2761         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
2762         struct wl12xx_vif *iter;
2763         struct vif_counter_data vif_count;
2764
2765         wl12xx_get_vif_count(hw, vif, &vif_count);
2766         mutex_lock(&wl->mutex);
2767
2768         if (wl->state == WLCORE_STATE_OFF ||
2769             !test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
2770                 goto out;
2771
2772         /*
2773          * wl->vif can be null here if someone shuts down the interface
2774          * just when hardware recovery has been started.
2775          */
2776         wl12xx_for_each_wlvif(wl, iter) {
2777                 if (iter != wlvif)
2778                         continue;
2779
2780                 __wl1271_op_remove_interface(wl, vif, true);
2781                 break;
2782         }
2783         WARN_ON(iter != wlvif);
2784         if (wl12xx_need_fw_change(wl, vif_count, false)) {
2785                 wl12xx_force_active_psm(wl);
2786                 set_bit(WL1271_FLAG_INTENDED_FW_RECOVERY, &wl->flags);
2787                 wl12xx_queue_recovery_work(wl);
2788         }
2789 out:
2790         mutex_unlock(&wl->mutex);
2791 }
2792
2793 static int wl12xx_op_change_interface(struct ieee80211_hw *hw,
2794                                       struct ieee80211_vif *vif,
2795                                       enum nl80211_iftype new_type, bool p2p)
2796 {
2797         struct wl1271 *wl = hw->priv;
2798         int ret;
2799
2800         set_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags);
2801         wl1271_op_remove_interface(hw, vif);
2802
2803         vif->type = new_type;
2804         vif->p2p = p2p;
2805         ret = wl1271_op_add_interface(hw, vif);
2806
2807         clear_bit(WL1271_FLAG_VIF_CHANGE_IN_PROGRESS, &wl->flags);
2808         return ret;
2809 }
2810
2811 static int wlcore_join(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2812 {
2813         int ret;
2814         bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
2815
2816         /*
2817          * One of the side effects of the JOIN command is that is clears
2818          * WPA/WPA2 keys from the chipset. Performing a JOIN while associated
2819          * to a WPA/WPA2 access point will therefore kill the data-path.
2820          * Currently the only valid scenario for JOIN during association
2821          * is on roaming, in which case we will also be given new keys.
2822          * Keep the below message for now, unless it starts bothering
2823          * users who really like to roam a lot :)
2824          */
2825         if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2826                 wl1271_info("JOIN while associated.");
2827
2828         /* clear encryption type */
2829         wlvif->encryption_type = KEY_NONE;
2830
2831         if (is_ibss)
2832                 ret = wl12xx_cmd_role_start_ibss(wl, wlvif);
2833         else {
2834                 if (wl->quirks & WLCORE_QUIRK_START_STA_FAILS) {
2835                         /*
2836                          * TODO: this is an ugly workaround for wl12xx fw
2837                          * bug - we are not able to tx/rx after the first
2838                          * start_sta, so make dummy start+stop calls,
2839                          * and then call start_sta again.
2840                          * this should be fixed in the fw.
2841                          */
2842                         wl12xx_cmd_role_start_sta(wl, wlvif);
2843                         wl12xx_cmd_role_stop_sta(wl, wlvif);
2844                 }
2845
2846                 ret = wl12xx_cmd_role_start_sta(wl, wlvif);
2847         }
2848
2849         return ret;
2850 }
2851
2852 static int wl1271_ssid_set(struct wl12xx_vif *wlvif, struct sk_buff *skb,
2853                             int offset)
2854 {
2855         u8 ssid_len;
2856         const u8 *ptr = cfg80211_find_ie(WLAN_EID_SSID, skb->data + offset,
2857                                          skb->len - offset);
2858
2859         if (!ptr) {
2860                 wl1271_error("No SSID in IEs!");
2861                 return -ENOENT;
2862         }
2863
2864         ssid_len = ptr[1];
2865         if (ssid_len > IEEE80211_MAX_SSID_LEN) {
2866                 wl1271_error("SSID is too long!");
2867                 return -EINVAL;
2868         }
2869
2870         wlvif->ssid_len = ssid_len;
2871         memcpy(wlvif->ssid, ptr+2, ssid_len);
2872         return 0;
2873 }
2874
2875 static int wlcore_set_ssid(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2876 {
2877         struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
2878         struct sk_buff *skb;
2879         int ieoffset;
2880
2881         /* we currently only support setting the ssid from the ap probe req */
2882         if (wlvif->bss_type != BSS_TYPE_STA_BSS)
2883                 return -EINVAL;
2884
2885         skb = ieee80211_ap_probereq_get(wl->hw, vif);
2886         if (!skb)
2887                 return -EINVAL;
2888
2889         ieoffset = offsetof(struct ieee80211_mgmt,
2890                             u.probe_req.variable);
2891         wl1271_ssid_set(wlvif, skb, ieoffset);
2892         dev_kfree_skb(skb);
2893
2894         return 0;
2895 }
2896
2897 static int wlcore_set_assoc(struct wl1271 *wl, struct wl12xx_vif *wlvif,
2898                             struct ieee80211_bss_conf *bss_conf,
2899                             u32 sta_rate_set)
2900 {
2901         int ieoffset;
2902         int ret;
2903
2904         wlvif->aid = bss_conf->aid;
2905         wlvif->channel_type = cfg80211_get_chandef_type(&bss_conf->chandef);
2906         wlvif->beacon_int = bss_conf->beacon_int;
2907         wlvif->wmm_enabled = bss_conf->qos;
2908
2909         set_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags);
2910
2911         /*
2912          * with wl1271, we don't need to update the
2913          * beacon_int and dtim_period, because the firmware
2914          * updates it by itself when the first beacon is
2915          * received after a join.
2916          */
2917         ret = wl1271_cmd_build_ps_poll(wl, wlvif, wlvif->aid);
2918         if (ret < 0)
2919                 return ret;
2920
2921         /*
2922          * Get a template for hardware connection maintenance
2923          */
2924         dev_kfree_skb(wlvif->probereq);
2925         wlvif->probereq = wl1271_cmd_build_ap_probe_req(wl,
2926                                                         wlvif,
2927                                                         NULL);
2928         ieoffset = offsetof(struct ieee80211_mgmt,
2929                             u.probe_req.variable);
2930         wl1271_ssid_set(wlvif, wlvif->probereq, ieoffset);
2931
2932         /* enable the connection monitoring feature */
2933         ret = wl1271_acx_conn_monit_params(wl, wlvif, true);
2934         if (ret < 0)
2935                 return ret;
2936
2937         /*
2938          * The join command disable the keep-alive mode, shut down its process,
2939          * and also clear the template config, so we need to reset it all after
2940          * the join. The acx_aid starts the keep-alive process, and the order
2941          * of the commands below is relevant.
2942          */
2943         ret = wl1271_acx_keep_alive_mode(wl, wlvif, true);
2944         if (ret < 0)
2945                 return ret;
2946
2947         ret = wl1271_acx_aid(wl, wlvif, wlvif->aid);
2948         if (ret < 0)
2949                 return ret;
2950
2951         ret = wl12xx_cmd_build_klv_null_data(wl, wlvif);
2952         if (ret < 0)
2953                 return ret;
2954
2955         ret = wl1271_acx_keep_alive_config(wl, wlvif,
2956                                            wlvif->sta.klv_template_id,
2957                                            ACX_KEEP_ALIVE_TPL_VALID);
2958         if (ret < 0)
2959                 return ret;
2960
2961         /*
2962          * The default fw psm configuration is AUTO, while mac80211 default
2963          * setting is off (ACTIVE), so sync the fw with the correct value.
2964          */
2965         ret = wl1271_ps_set_mode(wl, wlvif, STATION_ACTIVE_MODE);
2966         if (ret < 0)
2967                 return ret;
2968
2969         if (sta_rate_set) {
2970                 wlvif->rate_set =
2971                         wl1271_tx_enabled_rates_get(wl,
2972                                                     sta_rate_set,
2973                                                     wlvif->band);
2974                 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
2975                 if (ret < 0)
2976                         return ret;
2977         }
2978
2979         return ret;
2980 }
2981
2982 static int wlcore_unset_assoc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
2983 {
2984         int ret;
2985         bool sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
2986
2987         /* make sure we are connected (sta) joined */
2988         if (sta &&
2989             !test_and_clear_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
2990                 return false;
2991
2992         /* make sure we are joined (ibss) */
2993         if (!sta &&
2994             test_and_clear_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags))
2995                 return false;
2996
2997         if (sta) {
2998                 /* use defaults when not associated */
2999                 wlvif->aid = 0;
3000
3001                 /* free probe-request template */
3002                 dev_kfree_skb(wlvif->probereq);
3003                 wlvif->probereq = NULL;
3004
3005                 /* disable connection monitor features */
3006                 ret = wl1271_acx_conn_monit_params(wl, wlvif, false);
3007                 if (ret < 0)
3008                         return ret;
3009
3010                 /* Disable the keep-alive feature */
3011                 ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
3012                 if (ret < 0)
3013                         return ret;
3014
3015                 /* disable beacon filtering */
3016                 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
3017                 if (ret < 0)
3018                         return ret;
3019         }
3020
3021         if (test_and_clear_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags)) {
3022                 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
3023
3024                 wl12xx_cmd_stop_channel_switch(wl, wlvif);
3025                 ieee80211_chswitch_done(vif, false);
3026                 cancel_delayed_work(&wlvif->channel_switch_work);
3027         }
3028
3029         /* invalidate keep-alive template */
3030         wl1271_acx_keep_alive_config(wl, wlvif,
3031                                      wlvif->sta.klv_template_id,
3032                                      ACX_KEEP_ALIVE_TPL_INVALID);
3033
3034         return 0;
3035 }
3036
3037 static void wl1271_set_band_rate(struct wl1271 *wl, struct wl12xx_vif *wlvif)
3038 {
3039         wlvif->basic_rate_set = wlvif->bitrate_masks[wlvif->band];
3040         wlvif->rate_set = wlvif->basic_rate_set;
3041 }
3042
3043 static void wl1271_sta_handle_idle(struct wl1271 *wl, struct wl12xx_vif *wlvif,
3044                                    bool idle)
3045 {
3046         bool cur_idle = !test_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
3047
3048         if (idle == cur_idle)
3049                 return;
3050
3051         if (idle) {
3052                 clear_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
3053         } else {
3054                 /* The current firmware only supports sched_scan in idle */
3055                 if (wl->sched_vif == wlvif)
3056                         wl->ops->sched_scan_stop(wl, wlvif);
3057
3058                 set_bit(WLVIF_FLAG_ACTIVE, &wlvif->flags);
3059         }
3060 }
3061
3062 static int wl12xx_config_vif(struct wl1271 *wl, struct wl12xx_vif *wlvif,
3063                              struct ieee80211_conf *conf, u32 changed)
3064 {
3065         int ret;
3066
3067         if (wlcore_is_p2p_mgmt(wlvif))
3068                 return 0;
3069
3070         if (conf->power_level != wlvif->power_level) {
3071                 ret = wl1271_acx_tx_power(wl, wlvif, conf->power_level);
3072                 if (ret < 0)
3073                         return ret;
3074
3075                 wlvif->power_level = conf->power_level;
3076         }
3077
3078         return 0;
3079 }
3080
3081 static int wl1271_op_config(struct ieee80211_hw *hw, u32 changed)
3082 {
3083         struct wl1271 *wl = hw->priv;
3084         struct wl12xx_vif *wlvif;
3085         struct ieee80211_conf *conf = &hw->conf;
3086         int ret = 0;
3087
3088         wl1271_debug(DEBUG_MAC80211, "mac80211 config psm %s power %d %s"
3089                      " changed 0x%x",
3090                      conf->flags & IEEE80211_CONF_PS ? "on" : "off",
3091                      conf->power_level,
3092                      conf->flags & IEEE80211_CONF_IDLE ? "idle" : "in use",
3093                          changed);
3094
3095         mutex_lock(&wl->mutex);
3096
3097         if (changed & IEEE80211_CONF_CHANGE_POWER)
3098                 wl->power_level = conf->power_level;
3099
3100         if (unlikely(wl->state != WLCORE_STATE_ON))
3101                 goto out;
3102
3103         ret = wl1271_ps_elp_wakeup(wl);
3104         if (ret < 0)
3105                 goto out;
3106
3107         /* configure each interface */
3108         wl12xx_for_each_wlvif(wl, wlvif) {
3109                 ret = wl12xx_config_vif(wl, wlvif, conf, changed);
3110                 if (ret < 0)
3111                         goto out_sleep;
3112         }
3113
3114 out_sleep:
3115         wl1271_ps_elp_sleep(wl);
3116
3117 out:
3118         mutex_unlock(&wl->mutex);
3119
3120         return ret;
3121 }
3122
3123 struct wl1271_filter_params {
3124         bool enabled;
3125         int mc_list_length;
3126         u8 mc_list[ACX_MC_ADDRESS_GROUP_MAX][ETH_ALEN];
3127 };
3128
3129 static u64 wl1271_op_prepare_multicast(struct ieee80211_hw *hw,
3130                                        struct netdev_hw_addr_list *mc_list)
3131 {
3132         struct wl1271_filter_params *fp;
3133         struct netdev_hw_addr *ha;
3134
3135         fp = kzalloc(sizeof(*fp), GFP_ATOMIC);
3136         if (!fp) {
3137                 wl1271_error("Out of memory setting filters.");
3138                 return 0;
3139         }
3140
3141         /* update multicast filtering parameters */
3142         fp->mc_list_length = 0;
3143         if (netdev_hw_addr_list_count(mc_list) > ACX_MC_ADDRESS_GROUP_MAX) {
3144                 fp->enabled = false;
3145         } else {
3146                 fp->enabled = true;
3147                 netdev_hw_addr_list_for_each(ha, mc_list) {
3148                         memcpy(fp->mc_list[fp->mc_list_length],
3149                                         ha->addr, ETH_ALEN);
3150                         fp->mc_list_length++;
3151                 }
3152         }
3153
3154         return (u64)(unsigned long)fp;
3155 }
3156
3157 #define WL1271_SUPPORTED_FILTERS (FIF_ALLMULTI | \
3158                                   FIF_FCSFAIL | \
3159                                   FIF_BCN_PRBRESP_PROMISC | \
3160                                   FIF_CONTROL | \
3161                                   FIF_OTHER_BSS)
3162
3163 static void wl1271_op_configure_filter(struct ieee80211_hw *hw,
3164                                        unsigned int changed,
3165                                        unsigned int *total, u64 multicast)
3166 {
3167         struct wl1271_filter_params *fp = (void *)(unsigned long)multicast;
3168         struct wl1271 *wl = hw->priv;
3169         struct wl12xx_vif *wlvif;
3170
3171         int ret;
3172
3173         wl1271_debug(DEBUG_MAC80211, "mac80211 configure filter changed %x"
3174                      " total %x", changed, *total);
3175
3176         mutex_lock(&wl->mutex);
3177
3178         *total &= WL1271_SUPPORTED_FILTERS;
3179         changed &= WL1271_SUPPORTED_FILTERS;
3180
3181         if (unlikely(wl->state != WLCORE_STATE_ON))
3182                 goto out;
3183
3184         ret = wl1271_ps_elp_wakeup(wl);
3185         if (ret < 0)
3186                 goto out;
3187
3188         wl12xx_for_each_wlvif(wl, wlvif) {
3189                 if (wlcore_is_p2p_mgmt(wlvif))
3190                         continue;
3191
3192                 if (wlvif->bss_type != BSS_TYPE_AP_BSS) {
3193                         if (*total & FIF_ALLMULTI)
3194                                 ret = wl1271_acx_group_address_tbl(wl, wlvif,
3195                                                                    false,
3196                                                                    NULL, 0);
3197                         else if (fp)
3198                                 ret = wl1271_acx_group_address_tbl(wl, wlvif,
3199                                                         fp->enabled,
3200                                                         fp->mc_list,
3201                                                         fp->mc_list_length);
3202                         if (ret < 0)
3203                                 goto out_sleep;
3204                 }
3205         }
3206
3207         /*
3208          * the fw doesn't provide an api to configure the filters. instead,
3209          * the filters configuration is based on the active roles / ROC
3210          * state.
3211          */
3212
3213 out_sleep:
3214         wl1271_ps_elp_sleep(wl);
3215
3216 out:
3217         mutex_unlock(&wl->mutex);
3218         kfree(fp);
3219 }
3220
3221 static int wl1271_record_ap_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
3222                                 u8 id, u8 key_type, u8 key_size,
3223                                 const u8 *key, u8 hlid, u32 tx_seq_32,
3224                                 u16 tx_seq_16)
3225 {
3226         struct wl1271_ap_key *ap_key;
3227         int i;
3228
3229         wl1271_debug(DEBUG_CRYPT, "record ap key id %d", (int)id);
3230
3231         if (key_size > MAX_KEY_SIZE)
3232                 return -EINVAL;
3233
3234         /*
3235          * Find next free entry in ap_keys. Also check we are not replacing
3236          * an existing key.
3237          */
3238         for (i = 0; i < MAX_NUM_KEYS; i++) {
3239                 if (wlvif->ap.recorded_keys[i] == NULL)
3240                         break;
3241
3242                 if (wlvif->ap.recorded_keys[i]->id == id) {
3243                         wl1271_warning("trying to record key replacement");
3244                         return -EINVAL;
3245                 }
3246         }
3247
3248         if (i == MAX_NUM_KEYS)
3249                 return -EBUSY;
3250
3251         ap_key = kzalloc(sizeof(*ap_key), GFP_KERNEL);
3252         if (!ap_key)
3253                 return -ENOMEM;
3254
3255         ap_key->id = id;
3256         ap_key->key_type = key_type;
3257         ap_key->key_size = key_size;
3258         memcpy(ap_key->key, key, key_size);
3259         ap_key->hlid = hlid;
3260         ap_key->tx_seq_32 = tx_seq_32;
3261         ap_key->tx_seq_16 = tx_seq_16;
3262
3263         wlvif->ap.recorded_keys[i] = ap_key;
3264         return 0;
3265 }
3266
3267 static void wl1271_free_ap_keys(struct wl1271 *wl, struct wl12xx_vif *wlvif)
3268 {
3269         int i;
3270
3271         for (i = 0; i < MAX_NUM_KEYS; i++) {
3272                 kfree(wlvif->ap.recorded_keys[i]);
3273                 wlvif->ap.recorded_keys[i] = NULL;
3274         }
3275 }
3276
3277 static int wl1271_ap_init_hwenc(struct wl1271 *wl, struct wl12xx_vif *wlvif)
3278 {
3279         int i, ret = 0;
3280         struct wl1271_ap_key *key;
3281         bool wep_key_added = false;
3282
3283         for (i = 0; i < MAX_NUM_KEYS; i++) {
3284                 u8 hlid;
3285                 if (wlvif->ap.recorded_keys[i] == NULL)
3286                         break;
3287
3288                 key = wlvif->ap.recorded_keys[i];
3289                 hlid = key->hlid;
3290                 if (hlid == WL12XX_INVALID_LINK_ID)
3291                         hlid = wlvif->ap.bcast_hlid;
3292
3293                 ret = wl1271_cmd_set_ap_key(wl, wlvif, KEY_ADD_OR_REPLACE,
3294                                             key->id, key->key_type,
3295                                             key->key_size, key->key,
3296                                             hlid, key->tx_seq_32,
3297                                             key->tx_seq_16);
3298                 if (ret < 0)
3299                         goto out;
3300
3301                 if (key->key_type == KEY_WEP)
3302                         wep_key_added = true;
3303         }
3304
3305         if (wep_key_added) {
3306                 ret = wl12xx_cmd_set_default_wep_key(wl, wlvif->default_key,
3307                                                      wlvif->ap.bcast_hlid);
3308                 if (ret < 0)
3309                         goto out;
3310         }
3311
3312 out:
3313         wl1271_free_ap_keys(wl, wlvif);
3314         return ret;
3315 }
3316
3317 static int wl1271_set_key(struct wl1271 *wl, struct wl12xx_vif *wlvif,
3318                        u16 action, u8 id, u8 key_type,
3319                        u8 key_size, const u8 *key, u32 tx_seq_32,
3320                        u16 tx_seq_16, struct ieee80211_sta *sta)
3321 {
3322         int ret;
3323         bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
3324
3325         if (is_ap) {
3326                 struct wl1271_station *wl_sta;
3327                 u8 hlid;
3328
3329                 if (sta) {
3330                         wl_sta = (struct wl1271_station *)sta->drv_priv;
3331                         hlid = wl_sta->hlid;
3332                 } else {
3333                         hlid = wlvif->ap.bcast_hlid;
3334                 }
3335
3336                 if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
3337                         /*
3338                          * We do not support removing keys after AP shutdown.
3339                          * Pretend we do to make mac80211 happy.
3340                          */
3341                         if (action != KEY_ADD_OR_REPLACE)
3342                                 return 0;
3343
3344                         ret = wl1271_record_ap_key(wl, wlvif, id,
3345                                              key_type, key_size,
3346                                              key, hlid, tx_seq_32,
3347                                              tx_seq_16);
3348                 } else {
3349                         ret = wl1271_cmd_set_ap_key(wl, wlvif, action,
3350                                              id, key_type, key_size,
3351                                              key, hlid, tx_seq_32,
3352                                              tx_seq_16);
3353                 }
3354
3355                 if (ret < 0)
3356                         return ret;
3357         } else {
3358                 const u8 *addr;
3359                 static const u8 bcast_addr[ETH_ALEN] = {
3360                         0xff, 0xff, 0xff, 0xff, 0xff, 0xff
3361                 };
3362
3363                 addr = sta ? sta->addr : bcast_addr;
3364
3365                 if (is_zero_ether_addr(addr)) {
3366                         /* We dont support TX only encryption */
3367                         return -EOPNOTSUPP;
3368                 }
3369
3370                 /* The wl1271 does not allow to remove unicast keys - they
3371                    will be cleared automatically on next CMD_JOIN. Ignore the
3372                    request silently, as we dont want the mac80211 to emit
3373                    an error message. */
3374                 if (action == KEY_REMOVE && !is_broadcast_ether_addr(addr))
3375                         return 0;
3376
3377                 /* don't remove key if hlid was already deleted */
3378                 if (action == KEY_REMOVE &&
3379                     wlvif->sta.hlid == WL12XX_INVALID_LINK_ID)
3380                         return 0;
3381
3382                 ret = wl1271_cmd_set_sta_key(wl, wlvif, action,
3383                                              id, key_type, key_size,
3384                                              key, addr, tx_seq_32,
3385                                              tx_seq_16);
3386                 if (ret < 0)
3387                         return ret;
3388
3389         }
3390
3391         return 0;
3392 }
3393
3394 static int wlcore_op_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3395                              struct ieee80211_vif *vif,
3396                              struct ieee80211_sta *sta,
3397                              struct ieee80211_key_conf *key_conf)
3398 {
3399         struct wl1271 *wl = hw->priv;
3400         int ret;
3401         bool might_change_spare =
3402                 key_conf->cipher == WL1271_CIPHER_SUITE_GEM ||
3403                 key_conf->cipher == WLAN_CIPHER_SUITE_TKIP;
3404
3405         if (might_change_spare) {
3406                 /*
3407                  * stop the queues and flush to ensure the next packets are
3408                  * in sync with FW spare block accounting
3409                  */
3410                 wlcore_stop_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
3411                 wl1271_tx_flush(wl);
3412         }
3413
3414         mutex_lock(&wl->mutex);
3415
3416         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3417                 ret = -EAGAIN;
3418                 goto out_wake_queues;
3419         }
3420
3421         ret = wl1271_ps_elp_wakeup(wl);
3422         if (ret < 0)
3423                 goto out_wake_queues;
3424
3425         ret = wlcore_hw_set_key(wl, cmd, vif, sta, key_conf);
3426
3427         wl1271_ps_elp_sleep(wl);
3428
3429 out_wake_queues:
3430         if (might_change_spare)
3431                 wlcore_wake_queues(wl, WLCORE_QUEUE_STOP_REASON_SPARE_BLK);
3432
3433         mutex_unlock(&wl->mutex);
3434
3435         return ret;
3436 }
3437
3438 int wlcore_set_key(struct wl1271 *wl, enum set_key_cmd cmd,
3439                    struct ieee80211_vif *vif,
3440                    struct ieee80211_sta *sta,
3441                    struct ieee80211_key_conf *key_conf)
3442 {
3443         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3444         int ret;
3445         u32 tx_seq_32 = 0;
3446         u16 tx_seq_16 = 0;
3447         u8 key_type;
3448         u8 hlid;
3449
3450         wl1271_debug(DEBUG_MAC80211, "mac80211 set key");
3451
3452         wl1271_debug(DEBUG_CRYPT, "CMD: 0x%x sta: %p", cmd, sta);
3453         wl1271_debug(DEBUG_CRYPT, "Key: algo:0x%x, id:%d, len:%d flags 0x%x",
3454                      key_conf->cipher, key_conf->keyidx,
3455                      key_conf->keylen, key_conf->flags);
3456         wl1271_dump(DEBUG_CRYPT, "KEY: ", key_conf->key, key_conf->keylen);
3457
3458         if (wlvif->bss_type == BSS_TYPE_AP_BSS)
3459                 if (sta) {
3460                         struct wl1271_station *wl_sta = (void *)sta->drv_priv;
3461                         hlid = wl_sta->hlid;
3462                 } else {
3463                         hlid = wlvif->ap.bcast_hlid;
3464                 }
3465         else
3466                 hlid = wlvif->sta.hlid;
3467
3468         if (hlid != WL12XX_INVALID_LINK_ID) {
3469                 u64 tx_seq = wl->links[hlid].total_freed_pkts;
3470                 tx_seq_32 = WL1271_TX_SECURITY_HI32(tx_seq);
3471                 tx_seq_16 = WL1271_TX_SECURITY_LO16(tx_seq);
3472         }
3473
3474         switch (key_conf->cipher) {
3475         case WLAN_CIPHER_SUITE_WEP40:
3476         case WLAN_CIPHER_SUITE_WEP104:
3477                 key_type = KEY_WEP;
3478
3479                 key_conf->hw_key_idx = key_conf->keyidx;
3480                 break;
3481         case WLAN_CIPHER_SUITE_TKIP:
3482                 key_type = KEY_TKIP;
3483                 key_conf->hw_key_idx = key_conf->keyidx;
3484                 break;
3485         case WLAN_CIPHER_SUITE_CCMP:
3486                 key_type = KEY_AES;
3487                 key_conf->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
3488                 break;
3489         case WL1271_CIPHER_SUITE_GEM:
3490                 key_type = KEY_GEM;
3491                 break;
3492         default:
3493                 wl1271_error("Unknown key algo 0x%x", key_conf->cipher);
3494
3495                 return -EOPNOTSUPP;
3496         }
3497
3498         switch (cmd) {
3499         case SET_KEY:
3500                 ret = wl1271_set_key(wl, wlvif, KEY_ADD_OR_REPLACE,
3501                                  key_conf->keyidx, key_type,
3502                                  key_conf->keylen, key_conf->key,
3503                                  tx_seq_32, tx_seq_16, sta);
3504                 if (ret < 0) {
3505                         wl1271_error("Could not add or replace key");
3506                         return ret;
3507                 }
3508
3509                 /*
3510                  * reconfiguring arp response if the unicast (or common)
3511                  * encryption key type was changed
3512                  */
3513                 if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
3514                     (sta || key_type == KEY_WEP) &&
3515                     wlvif->encryption_type != key_type) {
3516                         wlvif->encryption_type = key_type;
3517                         ret = wl1271_cmd_build_arp_rsp(wl, wlvif);
3518                         if (ret < 0) {
3519                                 wl1271_warning("build arp rsp failed: %d", ret);
3520                                 return ret;
3521                         }
3522                 }
3523                 break;
3524
3525         case DISABLE_KEY:
3526                 ret = wl1271_set_key(wl, wlvif, KEY_REMOVE,
3527                                      key_conf->keyidx, key_type,
3528                                      key_conf->keylen, key_conf->key,
3529                                      0, 0, sta);
3530                 if (ret < 0) {
3531                         wl1271_error("Could not remove key");
3532                         return ret;
3533                 }
3534                 break;
3535
3536         default:
3537                 wl1271_error("Unsupported key cmd 0x%x", cmd);
3538                 return -EOPNOTSUPP;
3539         }
3540
3541         return ret;
3542 }
3543 EXPORT_SYMBOL_GPL(wlcore_set_key);
3544
3545 static void wl1271_op_set_default_key_idx(struct ieee80211_hw *hw,
3546                                           struct ieee80211_vif *vif,
3547                                           int key_idx)
3548 {
3549         struct wl1271 *wl = hw->priv;
3550         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3551         int ret;
3552
3553         wl1271_debug(DEBUG_MAC80211, "mac80211 set default key idx %d",
3554                      key_idx);
3555
3556         /* we don't handle unsetting of default key */
3557         if (key_idx == -1)
3558                 return;
3559
3560         mutex_lock(&wl->mutex);
3561
3562         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3563                 ret = -EAGAIN;
3564                 goto out_unlock;
3565         }
3566
3567         ret = wl1271_ps_elp_wakeup(wl);
3568         if (ret < 0)
3569                 goto out_unlock;
3570
3571         wlvif->default_key = key_idx;
3572
3573         /* the default WEP key needs to be configured at least once */
3574         if (wlvif->encryption_type == KEY_WEP) {
3575                 ret = wl12xx_cmd_set_default_wep_key(wl,
3576                                 key_idx,
3577                                 wlvif->sta.hlid);
3578                 if (ret < 0)
3579                         goto out_sleep;
3580         }
3581
3582 out_sleep:
3583         wl1271_ps_elp_sleep(wl);
3584
3585 out_unlock:
3586         mutex_unlock(&wl->mutex);
3587 }
3588
3589 void wlcore_regdomain_config(struct wl1271 *wl)
3590 {
3591         int ret;
3592
3593         if (!(wl->quirks & WLCORE_QUIRK_REGDOMAIN_CONF))
3594                 return;
3595
3596         mutex_lock(&wl->mutex);
3597
3598         if (unlikely(wl->state != WLCORE_STATE_ON))
3599                 goto out;
3600
3601         ret = wl1271_ps_elp_wakeup(wl);
3602         if (ret < 0)
3603                 goto out;
3604
3605         ret = wlcore_cmd_regdomain_config_locked(wl);
3606         if (ret < 0) {
3607                 wl12xx_queue_recovery_work(wl);
3608                 goto out;
3609         }
3610
3611         wl1271_ps_elp_sleep(wl);
3612 out:
3613         mutex_unlock(&wl->mutex);
3614 }
3615
3616 static int wl1271_op_hw_scan(struct ieee80211_hw *hw,
3617                              struct ieee80211_vif *vif,
3618                              struct ieee80211_scan_request *hw_req)
3619 {
3620         struct cfg80211_scan_request *req = &hw_req->req;
3621         struct wl1271 *wl = hw->priv;
3622         int ret;
3623         u8 *ssid = NULL;
3624         size_t len = 0;
3625
3626         wl1271_debug(DEBUG_MAC80211, "mac80211 hw scan");
3627
3628         if (req->n_ssids) {
3629                 ssid = req->ssids[0].ssid;
3630                 len = req->ssids[0].ssid_len;
3631         }
3632
3633         mutex_lock(&wl->mutex);
3634
3635         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3636                 /*
3637                  * We cannot return -EBUSY here because cfg80211 will expect
3638                  * a call to ieee80211_scan_completed if we do - in this case
3639                  * there won't be any call.
3640                  */
3641                 ret = -EAGAIN;
3642                 goto out;
3643         }
3644
3645         ret = wl1271_ps_elp_wakeup(wl);
3646         if (ret < 0)
3647                 goto out;
3648
3649         /* fail if there is any role in ROC */
3650         if (find_first_bit(wl->roc_map, WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES) {
3651                 /* don't allow scanning right now */
3652                 ret = -EBUSY;
3653                 goto out_sleep;
3654         }
3655
3656         ret = wlcore_scan(hw->priv, vif, ssid, len, req);
3657 out_sleep:
3658         wl1271_ps_elp_sleep(wl);
3659 out:
3660         mutex_unlock(&wl->mutex);
3661
3662         return ret;
3663 }
3664
3665 static void wl1271_op_cancel_hw_scan(struct ieee80211_hw *hw,
3666                                      struct ieee80211_vif *vif)
3667 {
3668         struct wl1271 *wl = hw->priv;
3669         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3670         struct cfg80211_scan_info info = {
3671                 .aborted = true,
3672         };
3673         int ret;
3674
3675         wl1271_debug(DEBUG_MAC80211, "mac80211 cancel hw scan");
3676
3677         mutex_lock(&wl->mutex);
3678
3679         if (unlikely(wl->state != WLCORE_STATE_ON))
3680                 goto out;
3681
3682         if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
3683                 goto out;
3684
3685         ret = wl1271_ps_elp_wakeup(wl);
3686         if (ret < 0)
3687                 goto out;
3688
3689         if (wl->scan.state != WL1271_SCAN_STATE_DONE) {
3690                 ret = wl->ops->scan_stop(wl, wlvif);
3691                 if (ret < 0)
3692                         goto out_sleep;
3693         }
3694
3695         /*
3696          * Rearm the tx watchdog just before idling scan. This
3697          * prevents just-finished scans from triggering the watchdog
3698          */
3699         wl12xx_rearm_tx_watchdog_locked(wl);
3700
3701         wl->scan.state = WL1271_SCAN_STATE_IDLE;
3702         memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
3703         wl->scan_wlvif = NULL;
3704         wl->scan.req = NULL;
3705         ieee80211_scan_completed(wl->hw, &info);
3706
3707 out_sleep:
3708         wl1271_ps_elp_sleep(wl);
3709 out:
3710         mutex_unlock(&wl->mutex);
3711
3712         cancel_delayed_work_sync(&wl->scan_complete_work);
3713 }
3714
3715 static int wl1271_op_sched_scan_start(struct ieee80211_hw *hw,
3716                                       struct ieee80211_vif *vif,
3717                                       struct cfg80211_sched_scan_request *req,
3718                                       struct ieee80211_scan_ies *ies)
3719 {
3720         struct wl1271 *wl = hw->priv;
3721         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3722         int ret;
3723
3724         wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_start");
3725
3726         mutex_lock(&wl->mutex);
3727
3728         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3729                 ret = -EAGAIN;
3730                 goto out;
3731         }
3732
3733         ret = wl1271_ps_elp_wakeup(wl);
3734         if (ret < 0)
3735                 goto out;
3736
3737         ret = wl->ops->sched_scan_start(wl, wlvif, req, ies);
3738         if (ret < 0)
3739                 goto out_sleep;
3740
3741         wl->sched_vif = wlvif;
3742
3743 out_sleep:
3744         wl1271_ps_elp_sleep(wl);
3745 out:
3746         mutex_unlock(&wl->mutex);
3747         return ret;
3748 }
3749
3750 static int wl1271_op_sched_scan_stop(struct ieee80211_hw *hw,
3751                                      struct ieee80211_vif *vif)
3752 {
3753         struct wl1271 *wl = hw->priv;
3754         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3755         int ret;
3756
3757         wl1271_debug(DEBUG_MAC80211, "wl1271_op_sched_scan_stop");
3758
3759         mutex_lock(&wl->mutex);
3760
3761         if (unlikely(wl->state != WLCORE_STATE_ON))
3762                 goto out;
3763
3764         ret = wl1271_ps_elp_wakeup(wl);
3765         if (ret < 0)
3766                 goto out;
3767
3768         wl->ops->sched_scan_stop(wl, wlvif);
3769
3770         wl1271_ps_elp_sleep(wl);
3771 out:
3772         mutex_unlock(&wl->mutex);
3773
3774         return 0;
3775 }
3776
3777 static int wl1271_op_set_frag_threshold(struct ieee80211_hw *hw, u32 value)
3778 {
3779         struct wl1271 *wl = hw->priv;
3780         int ret = 0;
3781
3782         mutex_lock(&wl->mutex);
3783
3784         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3785                 ret = -EAGAIN;
3786                 goto out;
3787         }
3788
3789         ret = wl1271_ps_elp_wakeup(wl);
3790         if (ret < 0)
3791                 goto out;
3792
3793         ret = wl1271_acx_frag_threshold(wl, value);
3794         if (ret < 0)
3795                 wl1271_warning("wl1271_op_set_frag_threshold failed: %d", ret);
3796
3797         wl1271_ps_elp_sleep(wl);
3798
3799 out:
3800         mutex_unlock(&wl->mutex);
3801
3802         return ret;
3803 }
3804
3805 static int wl1271_op_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
3806 {
3807         struct wl1271 *wl = hw->priv;
3808         struct wl12xx_vif *wlvif;
3809         int ret = 0;
3810
3811         mutex_lock(&wl->mutex);
3812
3813         if (unlikely(wl->state != WLCORE_STATE_ON)) {
3814                 ret = -EAGAIN;
3815                 goto out;
3816         }
3817
3818         ret = wl1271_ps_elp_wakeup(wl);
3819         if (ret < 0)
3820                 goto out;
3821
3822         wl12xx_for_each_wlvif(wl, wlvif) {
3823                 ret = wl1271_acx_rts_threshold(wl, wlvif, value);
3824                 if (ret < 0)
3825                         wl1271_warning("set rts threshold failed: %d", ret);
3826         }
3827         wl1271_ps_elp_sleep(wl);
3828
3829 out:
3830         mutex_unlock(&wl->mutex);
3831
3832         return ret;
3833 }
3834
3835 static void wl12xx_remove_ie(struct sk_buff *skb, u8 eid, int ieoffset)
3836 {
3837         int len;
3838         const u8 *next, *end = skb->data + skb->len;
3839         u8 *ie = (u8 *)cfg80211_find_ie(eid, skb->data + ieoffset,
3840                                         skb->len - ieoffset);
3841         if (!ie)
3842                 return;
3843         len = ie[1] + 2;
3844         next = ie + len;
3845         memmove(ie, next, end - next);
3846         skb_trim(skb, skb->len - len);
3847 }
3848
3849 static void wl12xx_remove_vendor_ie(struct sk_buff *skb,
3850                                             unsigned int oui, u8 oui_type,
3851                                             int ieoffset)
3852 {
3853         int len;
3854         const u8 *next, *end = skb->data + skb->len;
3855         u8 *ie = (u8 *)cfg80211_find_vendor_ie(oui, oui_type,
3856                                                skb->data + ieoffset,
3857                                                skb->len - ieoffset);
3858         if (!ie)
3859                 return;
3860         len = ie[1] + 2;
3861         next = ie + len;
3862         memmove(ie, next, end - next);
3863         skb_trim(skb, skb->len - len);
3864 }
3865
3866 static int wl1271_ap_set_probe_resp_tmpl(struct wl1271 *wl, u32 rates,
3867                                          struct ieee80211_vif *vif)
3868 {
3869         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3870         struct sk_buff *skb;
3871         int ret;
3872
3873         skb = ieee80211_proberesp_get(wl->hw, vif);
3874         if (!skb)
3875                 return -EOPNOTSUPP;
3876
3877         ret = wl1271_cmd_template_set(wl, wlvif->role_id,
3878                                       CMD_TEMPL_AP_PROBE_RESPONSE,
3879                                       skb->data,
3880                                       skb->len, 0,
3881                                       rates);
3882         dev_kfree_skb(skb);
3883
3884         if (ret < 0)
3885                 goto out;
3886
3887         wl1271_debug(DEBUG_AP, "probe response updated");
3888         set_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags);
3889
3890 out:
3891         return ret;
3892 }
3893
3894 static int wl1271_ap_set_probe_resp_tmpl_legacy(struct wl1271 *wl,
3895                                              struct ieee80211_vif *vif,
3896                                              u8 *probe_rsp_data,
3897                                              size_t probe_rsp_len,
3898                                              u32 rates)
3899 {
3900         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3901         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
3902         u8 probe_rsp_templ[WL1271_CMD_TEMPL_MAX_SIZE];
3903         int ssid_ie_offset, ie_offset, templ_len;
3904         const u8 *ptr;
3905
3906         /* no need to change probe response if the SSID is set correctly */
3907         if (wlvif->ssid_len > 0)
3908                 return wl1271_cmd_template_set(wl, wlvif->role_id,
3909                                                CMD_TEMPL_AP_PROBE_RESPONSE,
3910                                                probe_rsp_data,
3911                                                probe_rsp_len, 0,
3912                                                rates);
3913
3914         if (probe_rsp_len + bss_conf->ssid_len > WL1271_CMD_TEMPL_MAX_SIZE) {
3915                 wl1271_error("probe_rsp template too big");
3916                 return -EINVAL;
3917         }
3918
3919         /* start searching from IE offset */
3920         ie_offset = offsetof(struct ieee80211_mgmt, u.probe_resp.variable);
3921
3922         ptr = cfg80211_find_ie(WLAN_EID_SSID, probe_rsp_data + ie_offset,
3923                                probe_rsp_len - ie_offset);
3924         if (!ptr) {
3925                 wl1271_error("No SSID in beacon!");
3926                 return -EINVAL;
3927         }
3928
3929         ssid_ie_offset = ptr - probe_rsp_data;
3930         ptr += (ptr[1] + 2);
3931
3932         memcpy(probe_rsp_templ, probe_rsp_data, ssid_ie_offset);
3933
3934         /* insert SSID from bss_conf */
3935         probe_rsp_templ[ssid_ie_offset] = WLAN_EID_SSID;
3936         probe_rsp_templ[ssid_ie_offset + 1] = bss_conf->ssid_len;
3937         memcpy(probe_rsp_templ + ssid_ie_offset + 2,
3938                bss_conf->ssid, bss_conf->ssid_len);
3939         templ_len = ssid_ie_offset + 2 + bss_conf->ssid_len;
3940
3941         memcpy(probe_rsp_templ + ssid_ie_offset + 2 + bss_conf->ssid_len,
3942                ptr, probe_rsp_len - (ptr - probe_rsp_data));
3943         templ_len += probe_rsp_len - (ptr - probe_rsp_data);
3944
3945         return wl1271_cmd_template_set(wl, wlvif->role_id,
3946                                        CMD_TEMPL_AP_PROBE_RESPONSE,
3947                                        probe_rsp_templ,
3948                                        templ_len, 0,
3949                                        rates);
3950 }
3951
3952 static int wl1271_bss_erp_info_changed(struct wl1271 *wl,
3953                                        struct ieee80211_vif *vif,
3954                                        struct ieee80211_bss_conf *bss_conf,
3955                                        u32 changed)
3956 {
3957         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
3958         int ret = 0;
3959
3960         if (changed & BSS_CHANGED_ERP_SLOT) {
3961                 if (bss_conf->use_short_slot)
3962                         ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_SHORT);
3963                 else
3964                         ret = wl1271_acx_slot(wl, wlvif, SLOT_TIME_LONG);
3965                 if (ret < 0) {
3966                         wl1271_warning("Set slot time failed %d", ret);
3967                         goto out;
3968                 }
3969         }
3970
3971         if (changed & BSS_CHANGED_ERP_PREAMBLE) {
3972                 if (bss_conf->use_short_preamble)
3973                         wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_SHORT);
3974                 else
3975                         wl1271_acx_set_preamble(wl, wlvif, ACX_PREAMBLE_LONG);
3976         }
3977
3978         if (changed & BSS_CHANGED_ERP_CTS_PROT) {
3979                 if (bss_conf->use_cts_prot)
3980                         ret = wl1271_acx_cts_protect(wl, wlvif,
3981                                                      CTSPROTECT_ENABLE);
3982                 else
3983                         ret = wl1271_acx_cts_protect(wl, wlvif,
3984                                                      CTSPROTECT_DISABLE);
3985                 if (ret < 0) {
3986                         wl1271_warning("Set ctsprotect failed %d", ret);
3987                         goto out;
3988                 }
3989         }
3990
3991 out:
3992         return ret;
3993 }
3994
3995 static int wlcore_set_beacon_template(struct wl1271 *wl,
3996                                       struct ieee80211_vif *vif,
3997                                       bool is_ap)
3998 {
3999         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4000         struct ieee80211_hdr *hdr;
4001         u32 min_rate;
4002         int ret;
4003         int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
4004         struct sk_buff *beacon = ieee80211_beacon_get(wl->hw, vif);
4005         u16 tmpl_id;
4006
4007         if (!beacon) {
4008                 ret = -EINVAL;
4009                 goto out;
4010         }
4011
4012         wl1271_debug(DEBUG_MASTER, "beacon updated");
4013
4014         ret = wl1271_ssid_set(wlvif, beacon, ieoffset);
4015         if (ret < 0) {
4016                 dev_kfree_skb(beacon);
4017                 goto out;
4018         }
4019         min_rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
4020         tmpl_id = is_ap ? CMD_TEMPL_AP_BEACON :
4021                 CMD_TEMPL_BEACON;
4022         ret = wl1271_cmd_template_set(wl, wlvif->role_id, tmpl_id,
4023                                       beacon->data,
4024                                       beacon->len, 0,
4025                                       min_rate);
4026         if (ret < 0) {
4027                 dev_kfree_skb(beacon);
4028                 goto out;
4029         }
4030
4031         wlvif->wmm_enabled =
4032                 cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT,
4033                                         WLAN_OUI_TYPE_MICROSOFT_WMM,
4034                                         beacon->data + ieoffset,
4035                                         beacon->len - ieoffset);
4036
4037         /*
4038          * In case we already have a probe-resp beacon set explicitly
4039          * by usermode, don't use the beacon data.
4040          */
4041         if (test_bit(WLVIF_FLAG_AP_PROBE_RESP_SET, &wlvif->flags))
4042                 goto end_bcn;
4043
4044         /* remove TIM ie from probe response */
4045         wl12xx_remove_ie(beacon, WLAN_EID_TIM, ieoffset);
4046
4047         /*
4048          * remove p2p ie from probe response.
4049          * the fw reponds to probe requests that don't include
4050          * the p2p ie. probe requests with p2p ie will be passed,
4051          * and will be responded by the supplicant (the spec
4052          * forbids including the p2p ie when responding to probe
4053          * requests that didn't include it).
4054          */
4055         wl12xx_remove_vendor_ie(beacon, WLAN_OUI_WFA,
4056                                 WLAN_OUI_TYPE_WFA_P2P, ieoffset);
4057
4058         hdr = (struct ieee80211_hdr *) beacon->data;
4059         hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
4060                                          IEEE80211_STYPE_PROBE_RESP);
4061         if (is_ap)
4062                 ret = wl1271_ap_set_probe_resp_tmpl_legacy(wl, vif,
4063                                                            beacon->data,
4064                                                            beacon->len,
4065                                                            min_rate);
4066         else
4067                 ret = wl1271_cmd_template_set(wl, wlvif->role_id,
4068                                               CMD_TEMPL_PROBE_RESPONSE,
4069                                               beacon->data,
4070                                               beacon->len, 0,
4071                                               min_rate);
4072 end_bcn:
4073         dev_kfree_skb(beacon);
4074         if (ret < 0)
4075                 goto out;
4076
4077 out:
4078         return ret;
4079 }
4080
4081 static int wl1271_bss_beacon_info_changed(struct wl1271 *wl,
4082                                           struct ieee80211_vif *vif,
4083                                           struct ieee80211_bss_conf *bss_conf,
4084                                           u32 changed)
4085 {
4086         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4087         bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
4088         int ret = 0;
4089
4090         if (changed & BSS_CHANGED_BEACON_INT) {
4091                 wl1271_debug(DEBUG_MASTER, "beacon interval updated: %d",
4092                         bss_conf->beacon_int);
4093
4094                 wlvif->beacon_int = bss_conf->beacon_int;
4095         }
4096
4097         if ((changed & BSS_CHANGED_AP_PROBE_RESP) && is_ap) {
4098                 u32 rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
4099
4100                 wl1271_ap_set_probe_resp_tmpl(wl, rate, vif);
4101         }
4102
4103         if (changed & BSS_CHANGED_BEACON) {
4104                 ret = wlcore_set_beacon_template(wl, vif, is_ap);
4105                 if (ret < 0)
4106                         goto out;
4107
4108                 if (test_and_clear_bit(WLVIF_FLAG_BEACON_DISABLED,
4109                                        &wlvif->flags)) {
4110                         ret = wlcore_hw_dfs_master_restart(wl, wlvif);
4111                         if (ret < 0)
4112                                 goto out;
4113                 }
4114         }
4115 out:
4116         if (ret != 0)
4117                 wl1271_error("beacon info change failed: %d", ret);
4118         return ret;
4119 }
4120
4121 /* AP mode changes */
4122 static void wl1271_bss_info_changed_ap(struct wl1271 *wl,
4123                                        struct ieee80211_vif *vif,
4124                                        struct ieee80211_bss_conf *bss_conf,
4125                                        u32 changed)
4126 {
4127         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4128         int ret = 0;
4129
4130         if (changed & BSS_CHANGED_BASIC_RATES) {
4131                 u32 rates = bss_conf->basic_rates;
4132
4133                 wlvif->basic_rate_set = wl1271_tx_enabled_rates_get(wl, rates,
4134                                                                  wlvif->band);
4135                 wlvif->basic_rate = wl1271_tx_min_rate_get(wl,
4136                                                         wlvif->basic_rate_set);
4137
4138                 ret = wl1271_init_ap_rates(wl, wlvif);
4139                 if (ret < 0) {
4140                         wl1271_error("AP rate policy change failed %d", ret);
4141                         goto out;
4142                 }
4143
4144                 ret = wl1271_ap_init_templates(wl, vif);
4145                 if (ret < 0)
4146                         goto out;
4147
4148                 /* No need to set probe resp template for mesh */
4149                 if (!ieee80211_vif_is_mesh(vif)) {
4150                         ret = wl1271_ap_set_probe_resp_tmpl(wl,
4151                                                             wlvif->basic_rate,
4152                                                             vif);
4153                         if (ret < 0)
4154                                 goto out;
4155                 }
4156
4157                 ret = wlcore_set_beacon_template(wl, vif, true);
4158                 if (ret < 0)
4159                         goto out;
4160         }
4161
4162         ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf, changed);
4163         if (ret < 0)
4164                 goto out;
4165
4166         if (changed & BSS_CHANGED_BEACON_ENABLED) {
4167                 if (bss_conf->enable_beacon) {
4168                         if (!test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
4169                                 ret = wl12xx_cmd_role_start_ap(wl, wlvif);
4170                                 if (ret < 0)
4171                                         goto out;
4172
4173                                 ret = wl1271_ap_init_hwenc(wl, wlvif);
4174                                 if (ret < 0)
4175                                         goto out;
4176
4177                                 set_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
4178                                 wl1271_debug(DEBUG_AP, "started AP");
4179                         }
4180                 } else {
4181                         if (test_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags)) {
4182                                 /*
4183                                  * AP might be in ROC in case we have just
4184                                  * sent auth reply. handle it.
4185                                  */
4186                                 if (test_bit(wlvif->role_id, wl->roc_map))
4187                                         wl12xx_croc(wl, wlvif->role_id);
4188
4189                                 ret = wl12xx_cmd_role_stop_ap(wl, wlvif);
4190                                 if (ret < 0)
4191                                         goto out;
4192
4193                                 clear_bit(WLVIF_FLAG_AP_STARTED, &wlvif->flags);
4194                                 clear_bit(WLVIF_FLAG_AP_PROBE_RESP_SET,
4195                                           &wlvif->flags);
4196                                 wl1271_debug(DEBUG_AP, "stopped AP");
4197                         }
4198                 }
4199         }
4200
4201         ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
4202         if (ret < 0)
4203                 goto out;
4204
4205         /* Handle HT information change */
4206         if ((changed & BSS_CHANGED_HT) &&
4207             (bss_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT)) {
4208                 ret = wl1271_acx_set_ht_information(wl, wlvif,
4209                                         bss_conf->ht_operation_mode);
4210                 if (ret < 0) {
4211                         wl1271_warning("Set ht information failed %d", ret);
4212                         goto out;
4213                 }
4214         }
4215
4216 out:
4217         return;
4218 }
4219
4220 static int wlcore_set_bssid(struct wl1271 *wl, struct wl12xx_vif *wlvif,
4221                             struct ieee80211_bss_conf *bss_conf,
4222                             u32 sta_rate_set)
4223 {
4224         u32 rates;
4225         int ret;
4226
4227         wl1271_debug(DEBUG_MAC80211,
4228              "changed_bssid: %pM, aid: %d, bcn_int: %d, brates: 0x%x sta_rate_set: 0x%x",
4229              bss_conf->bssid, bss_conf->aid,
4230              bss_conf->beacon_int,
4231              bss_conf->basic_rates, sta_rate_set);
4232
4233         wlvif->beacon_int = bss_conf->beacon_int;
4234         rates = bss_conf->basic_rates;
4235         wlvif->basic_rate_set =
4236                 wl1271_tx_enabled_rates_get(wl, rates,
4237                                             wlvif->band);
4238         wlvif->basic_rate =
4239                 wl1271_tx_min_rate_get(wl,
4240                                        wlvif->basic_rate_set);
4241
4242         if (sta_rate_set)
4243                 wlvif->rate_set =
4244                         wl1271_tx_enabled_rates_get(wl,
4245                                                 sta_rate_set,
4246                                                 wlvif->band);
4247
4248         /* we only support sched_scan while not connected */
4249         if (wl->sched_vif == wlvif)
4250                 wl->ops->sched_scan_stop(wl, wlvif);
4251
4252         ret = wl1271_acx_sta_rate_policies(wl, wlvif);
4253         if (ret < 0)
4254                 return ret;
4255
4256         ret = wl12xx_cmd_build_null_data(wl, wlvif);
4257         if (ret < 0)
4258                 return ret;
4259
4260         ret = wl1271_build_qos_null_data(wl, wl12xx_wlvif_to_vif(wlvif));
4261         if (ret < 0)
4262                 return ret;
4263
4264         wlcore_set_ssid(wl, wlvif);
4265
4266         set_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
4267
4268         return 0;
4269 }
4270
4271 static int wlcore_clear_bssid(struct wl1271 *wl, struct wl12xx_vif *wlvif)
4272 {
4273         int ret;
4274
4275         /* revert back to minimum rates for the current band */
4276         wl1271_set_band_rate(wl, wlvif);
4277         wlvif->basic_rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
4278
4279         ret = wl1271_acx_sta_rate_policies(wl, wlvif);
4280         if (ret < 0)
4281                 return ret;
4282
4283         if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
4284             test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags)) {
4285                 ret = wl12xx_cmd_role_stop_sta(wl, wlvif);
4286                 if (ret < 0)
4287                         return ret;
4288         }
4289
4290         clear_bit(WLVIF_FLAG_IN_USE, &wlvif->flags);
4291         return 0;
4292 }
4293 /* STA/IBSS mode changes */
4294 static void wl1271_bss_info_changed_sta(struct wl1271 *wl,
4295                                         struct ieee80211_vif *vif,
4296                                         struct ieee80211_bss_conf *bss_conf,
4297                                         u32 changed)
4298 {
4299         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4300         bool do_join = false;
4301         bool is_ibss = (wlvif->bss_type == BSS_TYPE_IBSS);
4302         bool ibss_joined = false;
4303         u32 sta_rate_set = 0;
4304         int ret;
4305         struct ieee80211_sta *sta;
4306         bool sta_exists = false;
4307         struct ieee80211_sta_ht_cap sta_ht_cap;
4308
4309         if (is_ibss) {
4310                 ret = wl1271_bss_beacon_info_changed(wl, vif, bss_conf,
4311                                                      changed);
4312                 if (ret < 0)
4313                         goto out;
4314         }
4315
4316         if (changed & BSS_CHANGED_IBSS) {
4317                 if (bss_conf->ibss_joined) {
4318                         set_bit(WLVIF_FLAG_IBSS_JOINED, &wlvif->flags);
4319                         ibss_joined = true;
4320                 } else {
4321                         wlcore_unset_assoc(wl, wlvif);
4322                         wl12xx_cmd_role_stop_sta(wl, wlvif);
4323                 }
4324         }
4325
4326         if ((changed & BSS_CHANGED_BEACON_INT) && ibss_joined)
4327                 do_join = true;
4328
4329         /* Need to update the SSID (for filtering etc) */
4330         if ((changed & BSS_CHANGED_BEACON) && ibss_joined)
4331                 do_join = true;
4332
4333         if ((changed & BSS_CHANGED_BEACON_ENABLED) && ibss_joined) {
4334                 wl1271_debug(DEBUG_ADHOC, "ad-hoc beaconing: %s",
4335                              bss_conf->enable_beacon ? "enabled" : "disabled");
4336
4337                 do_join = true;
4338         }
4339
4340         if (changed & BSS_CHANGED_IDLE && !is_ibss)
4341                 wl1271_sta_handle_idle(wl, wlvif, bss_conf->idle);
4342
4343         if (changed & BSS_CHANGED_CQM) {
4344                 bool enable = false;
4345                 if (bss_conf->cqm_rssi_thold)
4346                         enable = true;
4347                 ret = wl1271_acx_rssi_snr_trigger(wl, wlvif, enable,
4348                                                   bss_conf->cqm_rssi_thold,
4349                                                   bss_conf->cqm_rssi_hyst);
4350                 if (ret < 0)
4351                         goto out;
4352                 wlvif->rssi_thold = bss_conf->cqm_rssi_thold;
4353         }
4354
4355         if (changed & (BSS_CHANGED_BSSID | BSS_CHANGED_HT |
4356                        BSS_CHANGED_ASSOC)) {
4357                 rcu_read_lock();
4358                 sta = ieee80211_find_sta(vif, bss_conf->bssid);
4359                 if (sta) {
4360                         u8 *rx_mask = sta->ht_cap.mcs.rx_mask;
4361
4362                         /* save the supp_rates of the ap */
4363                         sta_rate_set = sta->supp_rates[wlvif->band];
4364                         if (sta->ht_cap.ht_supported)
4365                                 sta_rate_set |=
4366                                         (rx_mask[0] << HW_HT_RATES_OFFSET) |
4367                                         (rx_mask[1] << HW_MIMO_RATES_OFFSET);
4368                         sta_ht_cap = sta->ht_cap;
4369                         sta_exists = true;
4370                 }
4371
4372                 rcu_read_unlock();
4373         }
4374
4375         if (changed & BSS_CHANGED_BSSID) {
4376                 if (!is_zero_ether_addr(bss_conf->bssid)) {
4377                         ret = wlcore_set_bssid(wl, wlvif, bss_conf,
4378                                                sta_rate_set);
4379                         if (ret < 0)
4380                                 goto out;
4381
4382                         /* Need to update the BSSID (for filtering etc) */
4383                         do_join = true;
4384                 } else {
4385                         ret = wlcore_clear_bssid(wl, wlvif);
4386                         if (ret < 0)
4387                                 goto out;
4388                 }
4389         }
4390
4391         if (changed & BSS_CHANGED_IBSS) {
4392                 wl1271_debug(DEBUG_ADHOC, "ibss_joined: %d",
4393                              bss_conf->ibss_joined);
4394
4395                 if (bss_conf->ibss_joined) {
4396                         u32 rates = bss_conf->basic_rates;
4397                         wlvif->basic_rate_set =
4398                                 wl1271_tx_enabled_rates_get(wl, rates,
4399                                                             wlvif->band);
4400                         wlvif->basic_rate =
4401                                 wl1271_tx_min_rate_get(wl,
4402                                                        wlvif->basic_rate_set);
4403
4404                         /* by default, use 11b + OFDM rates */
4405                         wlvif->rate_set = CONF_TX_IBSS_DEFAULT_RATES;
4406                         ret = wl1271_acx_sta_rate_policies(wl, wlvif);
4407                         if (ret < 0)
4408                                 goto out;
4409                 }
4410         }
4411
4412         if ((changed & BSS_CHANGED_BEACON_INFO) && bss_conf->dtim_period) {
4413                 /* enable beacon filtering */
4414                 ret = wl1271_acx_beacon_filter_opt(wl, wlvif, true);
4415                 if (ret < 0)
4416                         goto out;
4417         }
4418
4419         ret = wl1271_bss_erp_info_changed(wl, vif, bss_conf, changed);
4420         if (ret < 0)
4421                 goto out;
4422
4423         if (do_join) {
4424                 ret = wlcore_join(wl, wlvif);
4425                 if (ret < 0) {
4426                         wl1271_warning("cmd join failed %d", ret);
4427                         goto out;
4428                 }
4429         }
4430
4431         if (changed & BSS_CHANGED_ASSOC) {
4432                 if (bss_conf->assoc) {
4433                         ret = wlcore_set_assoc(wl, wlvif, bss_conf,
4434                                                sta_rate_set);
4435                         if (ret < 0)
4436                                 goto out;
4437
4438                         if (test_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags))
4439                                 wl12xx_set_authorized(wl, wlvif);
4440                 } else {
4441                         wlcore_unset_assoc(wl, wlvif);
4442                 }
4443         }
4444
4445         if (changed & BSS_CHANGED_PS) {
4446                 if ((bss_conf->ps) &&
4447                     test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags) &&
4448                     !test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) {
4449                         int ps_mode;
4450                         char *ps_mode_str;
4451
4452                         if (wl->conf.conn.forced_ps) {
4453                                 ps_mode = STATION_POWER_SAVE_MODE;
4454                                 ps_mode_str = "forced";
4455                         } else {
4456                                 ps_mode = STATION_AUTO_PS_MODE;
4457                                 ps_mode_str = "auto";
4458                         }
4459
4460                         wl1271_debug(DEBUG_PSM, "%s ps enabled", ps_mode_str);
4461
4462                         ret = wl1271_ps_set_mode(wl, wlvif, ps_mode);
4463                         if (ret < 0)
4464                                 wl1271_warning("enter %s ps failed %d",
4465                                                ps_mode_str, ret);
4466                 } else if (!bss_conf->ps &&
4467                            test_bit(WLVIF_FLAG_IN_PS, &wlvif->flags)) {
4468                         wl1271_debug(DEBUG_PSM, "auto ps disabled");
4469
4470                         ret = wl1271_ps_set_mode(wl, wlvif,
4471                                                  STATION_ACTIVE_MODE);
4472                         if (ret < 0)
4473                                 wl1271_warning("exit auto ps failed %d", ret);
4474                 }
4475         }
4476
4477         /* Handle new association with HT. Do this after join. */
4478         if (sta_exists) {
4479                 bool enabled =
4480                         bss_conf->chandef.width != NL80211_CHAN_WIDTH_20_NOHT;
4481
4482                 ret = wlcore_hw_set_peer_cap(wl,
4483                                              &sta_ht_cap,
4484                                              enabled,
4485                                              wlvif->rate_set,
4486                                              wlvif->sta.hlid);
4487                 if (ret < 0) {
4488                         wl1271_warning("Set ht cap failed %d", ret);
4489                         goto out;
4490
4491                 }
4492
4493                 if (enabled) {
4494                         ret = wl1271_acx_set_ht_information(wl, wlvif,
4495                                                 bss_conf->ht_operation_mode);
4496                         if (ret < 0) {
4497                                 wl1271_warning("Set ht information failed %d",
4498                                                ret);
4499                                 goto out;
4500                         }
4501                 }
4502         }
4503
4504         /* Handle arp filtering. Done after join. */
4505         if ((changed & BSS_CHANGED_ARP_FILTER) ||
4506             (!is_ibss && (changed & BSS_CHANGED_QOS))) {
4507                 __be32 addr = bss_conf->arp_addr_list[0];
4508                 wlvif->sta.qos = bss_conf->qos;
4509                 WARN_ON(wlvif->bss_type != BSS_TYPE_STA_BSS);
4510
4511                 if (bss_conf->arp_addr_cnt == 1 && bss_conf->assoc) {
4512                         wlvif->ip_addr = addr;
4513                         /*
4514                          * The template should have been configured only upon
4515                          * association. however, it seems that the correct ip
4516                          * isn't being set (when sending), so we have to
4517                          * reconfigure the template upon every ip change.
4518                          */
4519                         ret = wl1271_cmd_build_arp_rsp(wl, wlvif);
4520                         if (ret < 0) {
4521                                 wl1271_warning("build arp rsp failed: %d", ret);
4522                                 goto out;
4523                         }
4524
4525                         ret = wl1271_acx_arp_ip_filter(wl, wlvif,
4526                                 (ACX_ARP_FILTER_ARP_FILTERING |
4527                                  ACX_ARP_FILTER_AUTO_ARP),
4528                                 addr);
4529                 } else {
4530                         wlvif->ip_addr = 0;
4531                         ret = wl1271_acx_arp_ip_filter(wl, wlvif, 0, addr);
4532                 }
4533
4534                 if (ret < 0)
4535                         goto out;
4536         }
4537
4538 out:
4539         return;
4540 }
4541
4542 static void wl1271_op_bss_info_changed(struct ieee80211_hw *hw,
4543                                        struct ieee80211_vif *vif,
4544                                        struct ieee80211_bss_conf *bss_conf,
4545                                        u32 changed)
4546 {
4547         struct wl1271 *wl = hw->priv;
4548         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4549         bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
4550         int ret;
4551
4552         wl1271_debug(DEBUG_MAC80211, "mac80211 bss info role %d changed 0x%x",
4553                      wlvif->role_id, (int)changed);
4554
4555         /*
4556          * make sure to cancel pending disconnections if our association
4557          * state changed
4558          */
4559         if (!is_ap && (changed & BSS_CHANGED_ASSOC))
4560                 cancel_delayed_work_sync(&wlvif->connection_loss_work);
4561
4562         if (is_ap && (changed & BSS_CHANGED_BEACON_ENABLED) &&
4563             !bss_conf->enable_beacon)
4564                 wl1271_tx_flush(wl);
4565
4566         mutex_lock(&wl->mutex);
4567
4568         if (unlikely(wl->state != WLCORE_STATE_ON))
4569                 goto out;
4570
4571         if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
4572                 goto out;
4573
4574         ret = wl1271_ps_elp_wakeup(wl);
4575         if (ret < 0)
4576                 goto out;
4577
4578         if ((changed & BSS_CHANGED_TXPOWER) &&
4579             bss_conf->txpower != wlvif->power_level) {
4580
4581                 ret = wl1271_acx_tx_power(wl, wlvif, bss_conf->txpower);
4582                 if (ret < 0)
4583                         goto out;
4584
4585                 wlvif->power_level = bss_conf->txpower;
4586         }
4587
4588         if (is_ap)
4589                 wl1271_bss_info_changed_ap(wl, vif, bss_conf, changed);
4590         else
4591                 wl1271_bss_info_changed_sta(wl, vif, bss_conf, changed);
4592
4593         wl1271_ps_elp_sleep(wl);
4594
4595 out:
4596         mutex_unlock(&wl->mutex);
4597 }
4598
4599 static int wlcore_op_add_chanctx(struct ieee80211_hw *hw,
4600                                  struct ieee80211_chanctx_conf *ctx)
4601 {
4602         wl1271_debug(DEBUG_MAC80211, "mac80211 add chanctx %d (type %d)",
4603                      ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
4604                      cfg80211_get_chandef_type(&ctx->def));
4605         return 0;
4606 }
4607
4608 static void wlcore_op_remove_chanctx(struct ieee80211_hw *hw,
4609                                      struct ieee80211_chanctx_conf *ctx)
4610 {
4611         wl1271_debug(DEBUG_MAC80211, "mac80211 remove chanctx %d (type %d)",
4612                      ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
4613                      cfg80211_get_chandef_type(&ctx->def));
4614 }
4615
4616 static void wlcore_op_change_chanctx(struct ieee80211_hw *hw,
4617                                      struct ieee80211_chanctx_conf *ctx,
4618                                      u32 changed)
4619 {
4620         struct wl1271 *wl = hw->priv;
4621         struct wl12xx_vif *wlvif;
4622         int ret;
4623         int channel = ieee80211_frequency_to_channel(
4624                 ctx->def.chan->center_freq);
4625
4626         wl1271_debug(DEBUG_MAC80211,
4627                      "mac80211 change chanctx %d (type %d) changed 0x%x",
4628                      channel, cfg80211_get_chandef_type(&ctx->def), changed);
4629
4630         mutex_lock(&wl->mutex);
4631
4632         ret = wl1271_ps_elp_wakeup(wl);
4633         if (ret < 0)
4634                 goto out;
4635
4636         wl12xx_for_each_wlvif(wl, wlvif) {
4637                 struct ieee80211_vif *vif = wl12xx_wlvif_to_vif(wlvif);
4638
4639                 rcu_read_lock();
4640                 if (rcu_access_pointer(vif->chanctx_conf) != ctx) {
4641                         rcu_read_unlock();
4642                         continue;
4643                 }
4644                 rcu_read_unlock();
4645
4646                 /* start radar if needed */
4647                 if (changed & IEEE80211_CHANCTX_CHANGE_RADAR &&
4648                     wlvif->bss_type == BSS_TYPE_AP_BSS &&
4649                     ctx->radar_enabled && !wlvif->radar_enabled &&
4650                     ctx->def.chan->dfs_state == NL80211_DFS_USABLE) {
4651                         wl1271_debug(DEBUG_MAC80211, "Start radar detection");
4652                         wlcore_hw_set_cac(wl, wlvif, true);
4653                         wlvif->radar_enabled = true;
4654                 }
4655         }
4656
4657         wl1271_ps_elp_sleep(wl);
4658 out:
4659         mutex_unlock(&wl->mutex);
4660 }
4661
4662 static int wlcore_op_assign_vif_chanctx(struct ieee80211_hw *hw,
4663                                         struct ieee80211_vif *vif,
4664                                         struct ieee80211_chanctx_conf *ctx)
4665 {
4666         struct wl1271 *wl = hw->priv;
4667         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4668         int channel = ieee80211_frequency_to_channel(
4669                 ctx->def.chan->center_freq);
4670         int ret = -EINVAL;
4671
4672         wl1271_debug(DEBUG_MAC80211,
4673                      "mac80211 assign chanctx (role %d) %d (type %d) (radar %d dfs_state %d)",
4674                      wlvif->role_id, channel,
4675                      cfg80211_get_chandef_type(&ctx->def),
4676                      ctx->radar_enabled, ctx->def.chan->dfs_state);
4677
4678         mutex_lock(&wl->mutex);
4679
4680         if (unlikely(wl->state != WLCORE_STATE_ON))
4681                 goto out;
4682
4683         if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
4684                 goto out;
4685
4686         ret = wl1271_ps_elp_wakeup(wl);
4687         if (ret < 0)
4688                 goto out;
4689
4690         wlvif->band = ctx->def.chan->band;
4691         wlvif->channel = channel;
4692         wlvif->channel_type = cfg80211_get_chandef_type(&ctx->def);
4693
4694         /* update default rates according to the band */
4695         wl1271_set_band_rate(wl, wlvif);
4696
4697         if (ctx->radar_enabled &&
4698             ctx->def.chan->dfs_state == NL80211_DFS_USABLE) {
4699                 wl1271_debug(DEBUG_MAC80211, "Start radar detection");
4700                 wlcore_hw_set_cac(wl, wlvif, true);
4701                 wlvif->radar_enabled = true;
4702         }
4703
4704         wl1271_ps_elp_sleep(wl);
4705 out:
4706         mutex_unlock(&wl->mutex);
4707
4708         return 0;
4709 }
4710
4711 static void wlcore_op_unassign_vif_chanctx(struct ieee80211_hw *hw,
4712                                            struct ieee80211_vif *vif,
4713                                            struct ieee80211_chanctx_conf *ctx)
4714 {
4715         struct wl1271 *wl = hw->priv;
4716         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4717         int ret;
4718
4719         wl1271_debug(DEBUG_MAC80211,
4720                      "mac80211 unassign chanctx (role %d) %d (type %d)",
4721                      wlvif->role_id,
4722                      ieee80211_frequency_to_channel(ctx->def.chan->center_freq),
4723                      cfg80211_get_chandef_type(&ctx->def));
4724
4725         wl1271_tx_flush(wl);
4726
4727         mutex_lock(&wl->mutex);
4728
4729         if (unlikely(wl->state != WLCORE_STATE_ON))
4730                 goto out;
4731
4732         if (unlikely(!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags)))
4733                 goto out;
4734
4735         ret = wl1271_ps_elp_wakeup(wl);
4736         if (ret < 0)
4737                 goto out;
4738
4739         if (wlvif->radar_enabled) {
4740                 wl1271_debug(DEBUG_MAC80211, "Stop radar detection");
4741                 wlcore_hw_set_cac(wl, wlvif, false);
4742                 wlvif->radar_enabled = false;
4743         }
4744
4745         wl1271_ps_elp_sleep(wl);
4746 out:
4747         mutex_unlock(&wl->mutex);
4748 }
4749
4750 static int __wlcore_switch_vif_chan(struct wl1271 *wl,
4751                                     struct wl12xx_vif *wlvif,
4752                                     struct ieee80211_chanctx_conf *new_ctx)
4753 {
4754         int channel = ieee80211_frequency_to_channel(
4755                 new_ctx->def.chan->center_freq);
4756
4757         wl1271_debug(DEBUG_MAC80211,
4758                      "switch vif (role %d) %d -> %d chan_type: %d",
4759                      wlvif->role_id, wlvif->channel, channel,
4760                      cfg80211_get_chandef_type(&new_ctx->def));
4761
4762         if (WARN_ON_ONCE(wlvif->bss_type != BSS_TYPE_AP_BSS))
4763                 return 0;
4764
4765         WARN_ON(!test_bit(WLVIF_FLAG_BEACON_DISABLED, &wlvif->flags));
4766
4767         if (wlvif->radar_enabled) {
4768                 wl1271_debug(DEBUG_MAC80211, "Stop radar detection");
4769                 wlcore_hw_set_cac(wl, wlvif, false);
4770                 wlvif->radar_enabled = false;
4771         }
4772
4773         wlvif->band = new_ctx->def.chan->band;
4774         wlvif->channel = channel;
4775         wlvif->channel_type = cfg80211_get_chandef_type(&new_ctx->def);
4776
4777         /* start radar if needed */
4778         if (new_ctx->radar_enabled) {
4779                 wl1271_debug(DEBUG_MAC80211, "Start radar detection");
4780                 wlcore_hw_set_cac(wl, wlvif, true);
4781                 wlvif->radar_enabled = true;
4782         }
4783
4784         return 0;
4785 }
4786
4787 static int
4788 wlcore_op_switch_vif_chanctx(struct ieee80211_hw *hw,
4789                              struct ieee80211_vif_chanctx_switch *vifs,
4790                              int n_vifs,
4791                              enum ieee80211_chanctx_switch_mode mode)
4792 {
4793         struct wl1271 *wl = hw->priv;
4794         int i, ret;
4795
4796         wl1271_debug(DEBUG_MAC80211,
4797                      "mac80211 switch chanctx n_vifs %d mode %d",
4798                      n_vifs, mode);
4799
4800         mutex_lock(&wl->mutex);
4801
4802         ret = wl1271_ps_elp_wakeup(wl);
4803         if (ret < 0)
4804                 goto out;
4805
4806         for (i = 0; i < n_vifs; i++) {
4807                 struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vifs[i].vif);
4808
4809                 ret = __wlcore_switch_vif_chan(wl, wlvif, vifs[i].new_ctx);
4810                 if (ret)
4811                         goto out_sleep;
4812         }
4813 out_sleep:
4814         wl1271_ps_elp_sleep(wl);
4815 out:
4816         mutex_unlock(&wl->mutex);
4817
4818         return 0;
4819 }
4820
4821 static int wl1271_op_conf_tx(struct ieee80211_hw *hw,
4822                              struct ieee80211_vif *vif, u16 queue,
4823                              const struct ieee80211_tx_queue_params *params)
4824 {
4825         struct wl1271 *wl = hw->priv;
4826         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4827         u8 ps_scheme;
4828         int ret = 0;
4829
4830         if (wlcore_is_p2p_mgmt(wlvif))
4831                 return 0;
4832
4833         mutex_lock(&wl->mutex);
4834
4835         wl1271_debug(DEBUG_MAC80211, "mac80211 conf tx %d", queue);
4836
4837         if (params->uapsd)
4838                 ps_scheme = CONF_PS_SCHEME_UPSD_TRIGGER;
4839         else
4840                 ps_scheme = CONF_PS_SCHEME_LEGACY;
4841
4842         if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
4843                 goto out;
4844
4845         ret = wl1271_ps_elp_wakeup(wl);
4846         if (ret < 0)
4847                 goto out;
4848
4849         /*
4850          * the txop is confed in units of 32us by the mac80211,
4851          * we need us
4852          */
4853         ret = wl1271_acx_ac_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
4854                                 params->cw_min, params->cw_max,
4855                                 params->aifs, params->txop << 5);
4856         if (ret < 0)
4857                 goto out_sleep;
4858
4859         ret = wl1271_acx_tid_cfg(wl, wlvif, wl1271_tx_get_queue(queue),
4860                                  CONF_CHANNEL_TYPE_EDCF,
4861                                  wl1271_tx_get_queue(queue),
4862                                  ps_scheme, CONF_ACK_POLICY_LEGACY,
4863                                  0, 0);
4864
4865 out_sleep:
4866         wl1271_ps_elp_sleep(wl);
4867
4868 out:
4869         mutex_unlock(&wl->mutex);
4870
4871         return ret;
4872 }
4873
4874 static u64 wl1271_op_get_tsf(struct ieee80211_hw *hw,
4875                              struct ieee80211_vif *vif)
4876 {
4877
4878         struct wl1271 *wl = hw->priv;
4879         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
4880         u64 mactime = ULLONG_MAX;
4881         int ret;
4882
4883         wl1271_debug(DEBUG_MAC80211, "mac80211 get tsf");
4884
4885         mutex_lock(&wl->mutex);
4886
4887         if (unlikely(wl->state != WLCORE_STATE_ON))
4888                 goto out;
4889
4890         ret = wl1271_ps_elp_wakeup(wl);
4891         if (ret < 0)
4892                 goto out;
4893
4894         ret = wl12xx_acx_tsf_info(wl, wlvif, &mactime);
4895         if (ret < 0)
4896                 goto out_sleep;
4897
4898 out_sleep:
4899         wl1271_ps_elp_sleep(wl);
4900
4901 out:
4902         mutex_unlock(&wl->mutex);
4903         return mactime;
4904 }
4905
4906 static int wl1271_op_get_survey(struct ieee80211_hw *hw, int idx,
4907                                 struct survey_info *survey)
4908 {
4909         struct ieee80211_conf *conf = &hw->conf;
4910
4911         if (idx != 0)
4912                 return -ENOENT;
4913
4914         survey->channel = conf->chandef.chan;
4915         survey->filled = 0;
4916         return 0;
4917 }
4918
4919 static int wl1271_allocate_sta(struct wl1271 *wl,
4920                              struct wl12xx_vif *wlvif,
4921                              struct ieee80211_sta *sta)
4922 {
4923         struct wl1271_station *wl_sta;
4924         int ret;
4925
4926
4927         if (wl->active_sta_count >= wl->max_ap_stations) {
4928                 wl1271_warning("could not allocate HLID - too much stations");
4929                 return -EBUSY;
4930         }
4931
4932         wl_sta = (struct wl1271_station *)sta->drv_priv;
4933         ret = wl12xx_allocate_link(wl, wlvif, &wl_sta->hlid);
4934         if (ret < 0) {
4935                 wl1271_warning("could not allocate HLID - too many links");
4936                 return -EBUSY;
4937         }
4938
4939         /* use the previous security seq, if this is a recovery/resume */
4940         wl->links[wl_sta->hlid].total_freed_pkts = wl_sta->total_freed_pkts;
4941
4942         set_bit(wl_sta->hlid, wlvif->ap.sta_hlid_map);
4943         memcpy(wl->links[wl_sta->hlid].addr, sta->addr, ETH_ALEN);
4944         wl->active_sta_count++;
4945         return 0;
4946 }
4947
4948 void wl1271_free_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif, u8 hlid)
4949 {
4950         if (!test_bit(hlid, wlvif->ap.sta_hlid_map))
4951                 return;
4952
4953         clear_bit(hlid, wlvif->ap.sta_hlid_map);
4954         __clear_bit(hlid, &wl->ap_ps_map);
4955         __clear_bit(hlid, &wl->ap_fw_ps_map);
4956
4957         /*
4958          * save the last used PN in the private part of iee80211_sta,
4959          * in case of recovery/suspend
4960          */
4961         wlcore_save_freed_pkts_addr(wl, wlvif, hlid, wl->links[hlid].addr);
4962
4963         wl12xx_free_link(wl, wlvif, &hlid);
4964         wl->active_sta_count--;
4965
4966         /*
4967          * rearm the tx watchdog when the last STA is freed - give the FW a
4968          * chance to return STA-buffered packets before complaining.
4969          */
4970         if (wl->active_sta_count == 0)
4971                 wl12xx_rearm_tx_watchdog_locked(wl);
4972 }
4973
4974 static int wl12xx_sta_add(struct wl1271 *wl,
4975                           struct wl12xx_vif *wlvif,
4976                           struct ieee80211_sta *sta)
4977 {
4978         struct wl1271_station *wl_sta;
4979         int ret = 0;
4980         u8 hlid;
4981
4982         wl1271_debug(DEBUG_MAC80211, "mac80211 add sta %d", (int)sta->aid);
4983
4984         ret = wl1271_allocate_sta(wl, wlvif, sta);
4985         if (ret < 0)
4986                 return ret;
4987
4988         wl_sta = (struct wl1271_station *)sta->drv_priv;
4989         wl_sta->wl = wl;
4990         hlid = wl_sta->hlid;
4991
4992         ret = wl12xx_cmd_add_peer(wl, wlvif, sta, hlid);
4993         if (ret < 0)
4994                 wl1271_free_sta(wl, wlvif, hlid);
4995
4996         return ret;
4997 }
4998
4999 static int wl12xx_sta_remove(struct wl1271 *wl,
5000                              struct wl12xx_vif *wlvif,
5001                              struct ieee80211_sta *sta)
5002 {
5003         struct wl1271_station *wl_sta;
5004         int ret = 0, id;
5005
5006         wl1271_debug(DEBUG_MAC80211, "mac80211 remove sta %d", (int)sta->aid);
5007
5008         wl_sta = (struct wl1271_station *)sta->drv_priv;
5009         id = wl_sta->hlid;
5010         if (WARN_ON(!test_bit(id, wlvif->ap.sta_hlid_map)))
5011                 return -EINVAL;
5012
5013         ret = wl12xx_cmd_remove_peer(wl, wlvif, wl_sta->hlid);
5014         if (ret < 0)
5015                 return ret;
5016
5017         wl1271_free_sta(wl, wlvif, wl_sta->hlid);
5018         return ret;
5019 }
5020
5021 static void wlcore_roc_if_possible(struct wl1271 *wl,
5022                                    struct wl12xx_vif *wlvif)
5023 {
5024         if (find_first_bit(wl->roc_map,
5025                            WL12XX_MAX_ROLES) < WL12XX_MAX_ROLES)
5026                 return;
5027
5028         if (WARN_ON(wlvif->role_id == WL12XX_INVALID_ROLE_ID))
5029                 return;
5030
5031         wl12xx_roc(wl, wlvif, wlvif->role_id, wlvif->band, wlvif->channel);
5032 }
5033
5034 /*
5035  * when wl_sta is NULL, we treat this call as if coming from a
5036  * pending auth reply.
5037  * wl->mutex must be taken and the FW must be awake when the call
5038  * takes place.
5039  */
5040 void wlcore_update_inconn_sta(struct wl1271 *wl, struct wl12xx_vif *wlvif,
5041                               struct wl1271_station *wl_sta, bool in_conn)
5042 {
5043         if (in_conn) {
5044                 if (WARN_ON(wl_sta && wl_sta->in_connection))
5045                         return;
5046
5047                 if (!wlvif->ap_pending_auth_reply &&
5048                     !wlvif->inconn_count)
5049                         wlcore_roc_if_possible(wl, wlvif);
5050
5051                 if (wl_sta) {
5052                         wl_sta->in_connection = true;
5053                         wlvif->inconn_count++;
5054                 } else {
5055                         wlvif->ap_pending_auth_reply = true;
5056                 }
5057         } else {
5058                 if (wl_sta && !wl_sta->in_connection)
5059                         return;
5060
5061                 if (WARN_ON(!wl_sta && !wlvif->ap_pending_auth_reply))
5062                         return;
5063
5064                 if (WARN_ON(wl_sta && !wlvif->inconn_count))
5065                         return;
5066
5067                 if (wl_sta) {
5068                         wl_sta->in_connection = false;
5069                         wlvif->inconn_count--;
5070                 } else {
5071                         wlvif->ap_pending_auth_reply = false;
5072                 }
5073
5074                 if (!wlvif->inconn_count && !wlvif->ap_pending_auth_reply &&
5075                     test_bit(wlvif->role_id, wl->roc_map))
5076                         wl12xx_croc(wl, wlvif->role_id);
5077         }
5078 }
5079
5080 static int wl12xx_update_sta_state(struct wl1271 *wl,
5081                                    struct wl12xx_vif *wlvif,
5082                                    struct ieee80211_sta *sta,
5083                                    enum ieee80211_sta_state old_state,
5084                                    enum ieee80211_sta_state new_state)
5085 {
5086         struct wl1271_station *wl_sta;
5087         bool is_ap = wlvif->bss_type == BSS_TYPE_AP_BSS;
5088         bool is_sta = wlvif->bss_type == BSS_TYPE_STA_BSS;
5089         int ret;
5090
5091         wl_sta = (struct wl1271_station *)sta->drv_priv;
5092
5093         /* Add station (AP mode) */
5094         if (is_ap &&
5095             old_state == IEEE80211_STA_NOTEXIST &&
5096             new_state == IEEE80211_STA_NONE) {
5097                 ret = wl12xx_sta_add(wl, wlvif, sta);
5098                 if (ret)
5099                         return ret;
5100
5101                 wlcore_update_inconn_sta(wl, wlvif, wl_sta, true);
5102         }
5103
5104         /* Remove station (AP mode) */
5105         if (is_ap &&
5106             old_state == IEEE80211_STA_NONE &&
5107             new_state == IEEE80211_STA_NOTEXIST) {
5108                 /* must not fail */
5109                 wl12xx_sta_remove(wl, wlvif, sta);
5110
5111                 wlcore_update_inconn_sta(wl, wlvif, wl_sta, false);
5112         }
5113
5114         /* Authorize station (AP mode) */
5115         if (is_ap &&
5116             new_state == IEEE80211_STA_AUTHORIZED) {
5117                 ret = wl12xx_cmd_set_peer_state(wl, wlvif, wl_sta->hlid);
5118                 if (ret < 0)
5119                         return ret;
5120
5121                 /* reconfigure rates */
5122                 ret = wl12xx_cmd_add_peer(wl, wlvif, sta, wl_sta->hlid);
5123                 if (ret < 0)
5124                         return ret;
5125
5126                 ret = wl1271_acx_set_ht_capabilities(wl, &sta->ht_cap, true,
5127                                                      wl_sta->hlid);
5128                 if (ret)
5129                         return ret;
5130
5131                 wlcore_update_inconn_sta(wl, wlvif, wl_sta, false);
5132         }
5133
5134         /* Authorize station */
5135         if (is_sta &&
5136             new_state == IEEE80211_STA_AUTHORIZED) {
5137                 set_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
5138                 ret = wl12xx_set_authorized(wl, wlvif);
5139                 if (ret)
5140                         return ret;
5141         }
5142
5143         if (is_sta &&
5144             old_state == IEEE80211_STA_AUTHORIZED &&
5145             new_state == IEEE80211_STA_ASSOC) {
5146                 clear_bit(WLVIF_FLAG_STA_AUTHORIZED, &wlvif->flags);
5147                 clear_bit(WLVIF_FLAG_STA_STATE_SENT, &wlvif->flags);
5148         }
5149
5150         /* save seq number on disassoc (suspend) */
5151         if (is_sta &&
5152             old_state == IEEE80211_STA_ASSOC &&
5153             new_state == IEEE80211_STA_AUTH) {
5154                 wlcore_save_freed_pkts(wl, wlvif, wlvif->sta.hlid, sta);
5155                 wlvif->total_freed_pkts = 0;
5156         }
5157
5158         /* restore seq number on assoc (resume) */
5159         if (is_sta &&
5160             old_state == IEEE80211_STA_AUTH &&
5161             new_state == IEEE80211_STA_ASSOC) {
5162                 wlvif->total_freed_pkts = wl_sta->total_freed_pkts;
5163         }
5164
5165         /* clear ROCs on failure or authorization */
5166         if (is_sta &&
5167             (new_state == IEEE80211_STA_AUTHORIZED ||
5168              new_state == IEEE80211_STA_NOTEXIST)) {
5169                 if (test_bit(wlvif->role_id, wl->roc_map))
5170                         wl12xx_croc(wl, wlvif->role_id);
5171         }
5172
5173         if (is_sta &&
5174             old_state == IEEE80211_STA_NOTEXIST &&
5175             new_state == IEEE80211_STA_NONE) {
5176                 if (find_first_bit(wl->roc_map,
5177                                    WL12XX_MAX_ROLES) >= WL12XX_MAX_ROLES) {
5178                         WARN_ON(wlvif->role_id == WL12XX_INVALID_ROLE_ID);
5179                         wl12xx_roc(wl, wlvif, wlvif->role_id,
5180                                    wlvif->band, wlvif->channel);
5181                 }
5182         }
5183         return 0;
5184 }
5185
5186 static int wl12xx_op_sta_state(struct ieee80211_hw *hw,
5187                                struct ieee80211_vif *vif,
5188                                struct ieee80211_sta *sta,
5189                                enum ieee80211_sta_state old_state,
5190                                enum ieee80211_sta_state new_state)
5191 {
5192         struct wl1271 *wl = hw->priv;
5193         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5194         int ret;
5195
5196         wl1271_debug(DEBUG_MAC80211, "mac80211 sta %d state=%d->%d",
5197                      sta->aid, old_state, new_state);
5198
5199         mutex_lock(&wl->mutex);
5200
5201         if (unlikely(wl->state != WLCORE_STATE_ON)) {
5202                 ret = -EBUSY;
5203                 goto out;
5204         }
5205
5206         ret = wl1271_ps_elp_wakeup(wl);
5207         if (ret < 0)
5208                 goto out;
5209
5210         ret = wl12xx_update_sta_state(wl, wlvif, sta, old_state, new_state);
5211
5212         wl1271_ps_elp_sleep(wl);
5213 out:
5214         mutex_unlock(&wl->mutex);
5215         if (new_state < old_state)
5216                 return 0;
5217         return ret;
5218 }
5219
5220 static int wl1271_op_ampdu_action(struct ieee80211_hw *hw,
5221                                   struct ieee80211_vif *vif,
5222                                   struct ieee80211_ampdu_params *params)
5223 {
5224         struct wl1271 *wl = hw->priv;
5225         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5226         int ret;
5227         u8 hlid, *ba_bitmap;
5228         struct ieee80211_sta *sta = params->sta;
5229         enum ieee80211_ampdu_mlme_action action = params->action;
5230         u16 tid = params->tid;
5231         u16 *ssn = &params->ssn;
5232
5233         wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu action %d tid %d", action,
5234                      tid);
5235
5236         /* sanity check - the fields in FW are only 8bits wide */
5237         if (WARN_ON(tid > 0xFF))
5238                 return -ENOTSUPP;
5239
5240         mutex_lock(&wl->mutex);
5241
5242         if (unlikely(wl->state != WLCORE_STATE_ON)) {
5243                 ret = -EAGAIN;
5244                 goto out;
5245         }
5246
5247         if (wlvif->bss_type == BSS_TYPE_STA_BSS) {
5248                 hlid = wlvif->sta.hlid;
5249         } else if (wlvif->bss_type == BSS_TYPE_AP_BSS) {
5250                 struct wl1271_station *wl_sta;
5251
5252                 wl_sta = (struct wl1271_station *)sta->drv_priv;
5253                 hlid = wl_sta->hlid;
5254         } else {
5255                 ret = -EINVAL;
5256                 goto out;
5257         }
5258
5259         ba_bitmap = &wl->links[hlid].ba_bitmap;
5260
5261         ret = wl1271_ps_elp_wakeup(wl);
5262         if (ret < 0)
5263                 goto out;
5264
5265         wl1271_debug(DEBUG_MAC80211, "mac80211 ampdu: Rx tid %d action %d",
5266                      tid, action);
5267
5268         switch (action) {
5269         case IEEE80211_AMPDU_RX_START:
5270                 if (!wlvif->ba_support || !wlvif->ba_allowed) {
5271                         ret = -ENOTSUPP;
5272                         break;
5273                 }
5274
5275                 if (wl->ba_rx_session_count >= wl->ba_rx_session_count_max) {
5276                         ret = -EBUSY;
5277                         wl1271_error("exceeded max RX BA sessions");
5278                         break;
5279                 }
5280
5281                 if (*ba_bitmap & BIT(tid)) {
5282                         ret = -EINVAL;
5283                         wl1271_error("cannot enable RX BA session on active "
5284                                      "tid: %d", tid);
5285                         break;
5286                 }
5287
5288                 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, *ssn, true,
5289                                                          hlid);
5290                 if (!ret) {
5291                         *ba_bitmap |= BIT(tid);
5292                         wl->ba_rx_session_count++;
5293                 }
5294                 break;
5295
5296         case IEEE80211_AMPDU_RX_STOP:
5297                 if (!(*ba_bitmap & BIT(tid))) {
5298                         /*
5299                          * this happens on reconfig - so only output a debug
5300                          * message for now, and don't fail the function.
5301                          */
5302                         wl1271_debug(DEBUG_MAC80211,
5303                                      "no active RX BA session on tid: %d",
5304                                      tid);
5305                         ret = 0;
5306                         break;
5307                 }
5308
5309                 ret = wl12xx_acx_set_ba_receiver_session(wl, tid, 0, false,
5310                                                          hlid);
5311                 if (!ret) {
5312                         *ba_bitmap &= ~BIT(tid);
5313                         wl->ba_rx_session_count--;
5314                 }
5315                 break;
5316
5317         /*
5318          * The BA initiator session management in FW independently.
5319          * Falling break here on purpose for all TX APDU commands.
5320          */
5321         case IEEE80211_AMPDU_TX_START:
5322         case IEEE80211_AMPDU_TX_STOP_CONT:
5323         case IEEE80211_AMPDU_TX_STOP_FLUSH:
5324         case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
5325         case IEEE80211_AMPDU_TX_OPERATIONAL:
5326                 ret = -EINVAL;
5327                 break;
5328
5329         default:
5330                 wl1271_error("Incorrect ampdu action id=%x\n", action);
5331                 ret = -EINVAL;
5332         }
5333
5334         wl1271_ps_elp_sleep(wl);
5335
5336 out:
5337         mutex_unlock(&wl->mutex);
5338
5339         return ret;
5340 }
5341
5342 static int wl12xx_set_bitrate_mask(struct ieee80211_hw *hw,
5343                                    struct ieee80211_vif *vif,
5344                                    const struct cfg80211_bitrate_mask *mask)
5345 {
5346         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5347         struct wl1271 *wl = hw->priv;
5348         int i, ret = 0;
5349
5350         wl1271_debug(DEBUG_MAC80211, "mac80211 set_bitrate_mask 0x%x 0x%x",
5351                 mask->control[NL80211_BAND_2GHZ].legacy,
5352                 mask->control[NL80211_BAND_5GHZ].legacy);
5353
5354         mutex_lock(&wl->mutex);
5355
5356         for (i = 0; i < WLCORE_NUM_BANDS; i++)
5357                 wlvif->bitrate_masks[i] =
5358                         wl1271_tx_enabled_rates_get(wl,
5359                                                     mask->control[i].legacy,
5360                                                     i);
5361
5362         if (unlikely(wl->state != WLCORE_STATE_ON))
5363                 goto out;
5364
5365         if (wlvif->bss_type == BSS_TYPE_STA_BSS &&
5366             !test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
5367
5368                 ret = wl1271_ps_elp_wakeup(wl);
5369                 if (ret < 0)
5370                         goto out;
5371
5372                 wl1271_set_band_rate(wl, wlvif);
5373                 wlvif->basic_rate =
5374                         wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
5375                 ret = wl1271_acx_sta_rate_policies(wl, wlvif);
5376
5377                 wl1271_ps_elp_sleep(wl);
5378         }
5379 out:
5380         mutex_unlock(&wl->mutex);
5381
5382         return ret;
5383 }
5384
5385 static void wl12xx_op_channel_switch(struct ieee80211_hw *hw,
5386                                      struct ieee80211_vif *vif,
5387                                      struct ieee80211_channel_switch *ch_switch)
5388 {
5389         struct wl1271 *wl = hw->priv;
5390         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5391         int ret;
5392
5393         wl1271_debug(DEBUG_MAC80211, "mac80211 channel switch");
5394
5395         wl1271_tx_flush(wl);
5396
5397         mutex_lock(&wl->mutex);
5398
5399         if (unlikely(wl->state == WLCORE_STATE_OFF)) {
5400                 if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
5401                         ieee80211_chswitch_done(vif, false);
5402                 goto out;
5403         } else if (unlikely(wl->state != WLCORE_STATE_ON)) {
5404                 goto out;
5405         }
5406
5407         ret = wl1271_ps_elp_wakeup(wl);
5408         if (ret < 0)
5409                 goto out;
5410
5411         /* TODO: change mac80211 to pass vif as param */
5412
5413         if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
5414                 unsigned long delay_usec;
5415
5416                 ret = wl->ops->channel_switch(wl, wlvif, ch_switch);
5417                 if (ret)
5418                         goto out_sleep;
5419
5420                 set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
5421
5422                 /* indicate failure 5 seconds after channel switch time */
5423                 delay_usec = ieee80211_tu_to_usec(wlvif->beacon_int) *
5424                         ch_switch->count;
5425                 ieee80211_queue_delayed_work(hw, &wlvif->channel_switch_work,
5426                                              usecs_to_jiffies(delay_usec) +
5427                                              msecs_to_jiffies(5000));
5428         }
5429
5430 out_sleep:
5431         wl1271_ps_elp_sleep(wl);
5432
5433 out:
5434         mutex_unlock(&wl->mutex);
5435 }
5436
5437 static const void *wlcore_get_beacon_ie(struct wl1271 *wl,
5438                                         struct wl12xx_vif *wlvif,
5439                                         u8 eid)
5440 {
5441         int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
5442         struct sk_buff *beacon =
5443                 ieee80211_beacon_get(wl->hw, wl12xx_wlvif_to_vif(wlvif));
5444
5445         if (!beacon)
5446                 return NULL;
5447
5448         return cfg80211_find_ie(eid,
5449                                 beacon->data + ieoffset,
5450                                 beacon->len - ieoffset);
5451 }
5452
5453 static int wlcore_get_csa_count(struct wl1271 *wl, struct wl12xx_vif *wlvif,
5454                                 u8 *csa_count)
5455 {
5456         const u8 *ie;
5457         const struct ieee80211_channel_sw_ie *ie_csa;
5458
5459         ie = wlcore_get_beacon_ie(wl, wlvif, WLAN_EID_CHANNEL_SWITCH);
5460         if (!ie)
5461                 return -EINVAL;
5462
5463         ie_csa = (struct ieee80211_channel_sw_ie *)&ie[2];
5464         *csa_count = ie_csa->count;
5465
5466         return 0;
5467 }
5468
5469 static void wlcore_op_channel_switch_beacon(struct ieee80211_hw *hw,
5470                                             struct ieee80211_vif *vif,
5471                                             struct cfg80211_chan_def *chandef)
5472 {
5473         struct wl1271 *wl = hw->priv;
5474         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5475         struct ieee80211_channel_switch ch_switch = {
5476                 .block_tx = true,
5477                 .chandef = *chandef,
5478         };
5479         int ret;
5480
5481         wl1271_debug(DEBUG_MAC80211,
5482                      "mac80211 channel switch beacon (role %d)",
5483                      wlvif->role_id);
5484
5485         ret = wlcore_get_csa_count(wl, wlvif, &ch_switch.count);
5486         if (ret < 0) {
5487                 wl1271_error("error getting beacon (for CSA counter)");
5488                 return;
5489         }
5490
5491         mutex_lock(&wl->mutex);
5492
5493         if (unlikely(wl->state != WLCORE_STATE_ON)) {
5494                 ret = -EBUSY;
5495                 goto out;
5496         }
5497
5498         ret = wl1271_ps_elp_wakeup(wl);
5499         if (ret < 0)
5500                 goto out;
5501
5502         ret = wl->ops->channel_switch(wl, wlvif, &ch_switch);
5503         if (ret)
5504                 goto out_sleep;
5505
5506         set_bit(WLVIF_FLAG_CS_PROGRESS, &wlvif->flags);
5507
5508 out_sleep:
5509         wl1271_ps_elp_sleep(wl);
5510 out:
5511         mutex_unlock(&wl->mutex);
5512 }
5513
5514 static void wlcore_op_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
5515                             u32 queues, bool drop)
5516 {
5517         struct wl1271 *wl = hw->priv;
5518
5519         wl1271_tx_flush(wl);
5520 }
5521
5522 static int wlcore_op_remain_on_channel(struct ieee80211_hw *hw,
5523                                        struct ieee80211_vif *vif,
5524                                        struct ieee80211_channel *chan,
5525                                        int duration,
5526                                        enum ieee80211_roc_type type)
5527 {
5528         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5529         struct wl1271 *wl = hw->priv;
5530         int channel, active_roc, ret = 0;
5531
5532         channel = ieee80211_frequency_to_channel(chan->center_freq);
5533
5534         wl1271_debug(DEBUG_MAC80211, "mac80211 roc %d (%d)",
5535                      channel, wlvif->role_id);
5536
5537         mutex_lock(&wl->mutex);
5538
5539         if (unlikely(wl->state != WLCORE_STATE_ON))
5540                 goto out;
5541
5542         /* return EBUSY if we can't ROC right now */
5543         active_roc = find_first_bit(wl->roc_map, WL12XX_MAX_ROLES);
5544         if (wl->roc_vif || active_roc < WL12XX_MAX_ROLES) {
5545                 wl1271_warning("active roc on role %d", active_roc);
5546                 ret = -EBUSY;
5547                 goto out;
5548         }
5549
5550         ret = wl1271_ps_elp_wakeup(wl);
5551         if (ret < 0)
5552                 goto out;
5553
5554         ret = wl12xx_start_dev(wl, wlvif, chan->band, channel);
5555         if (ret < 0)
5556                 goto out_sleep;
5557
5558         wl->roc_vif = vif;
5559         ieee80211_queue_delayed_work(hw, &wl->roc_complete_work,
5560                                      msecs_to_jiffies(duration));
5561 out_sleep:
5562         wl1271_ps_elp_sleep(wl);
5563 out:
5564         mutex_unlock(&wl->mutex);
5565         return ret;
5566 }
5567
5568 static int __wlcore_roc_completed(struct wl1271 *wl)
5569 {
5570         struct wl12xx_vif *wlvif;
5571         int ret;
5572
5573         /* already completed */
5574         if (unlikely(!wl->roc_vif))
5575                 return 0;
5576
5577         wlvif = wl12xx_vif_to_data(wl->roc_vif);
5578
5579         if (!test_bit(WLVIF_FLAG_INITIALIZED, &wlvif->flags))
5580                 return -EBUSY;
5581
5582         ret = wl12xx_stop_dev(wl, wlvif);
5583         if (ret < 0)
5584                 return ret;
5585
5586         wl->roc_vif = NULL;
5587
5588         return 0;
5589 }
5590
5591 static int wlcore_roc_completed(struct wl1271 *wl)
5592 {
5593         int ret;
5594
5595         wl1271_debug(DEBUG_MAC80211, "roc complete");
5596
5597         mutex_lock(&wl->mutex);
5598
5599         if (unlikely(wl->state != WLCORE_STATE_ON)) {
5600                 ret = -EBUSY;
5601                 goto out;
5602         }
5603
5604         ret = wl1271_ps_elp_wakeup(wl);
5605         if (ret < 0)
5606                 goto out;
5607
5608         ret = __wlcore_roc_completed(wl);
5609
5610         wl1271_ps_elp_sleep(wl);
5611 out:
5612         mutex_unlock(&wl->mutex);
5613
5614         return ret;
5615 }
5616
5617 static void wlcore_roc_complete_work(struct work_struct *work)
5618 {
5619         struct delayed_work *dwork;
5620         struct wl1271 *wl;
5621         int ret;
5622
5623         dwork = to_delayed_work(work);
5624         wl = container_of(dwork, struct wl1271, roc_complete_work);
5625
5626         ret = wlcore_roc_completed(wl);
5627         if (!ret)
5628                 ieee80211_remain_on_channel_expired(wl->hw);
5629 }
5630
5631 static int wlcore_op_cancel_remain_on_channel(struct ieee80211_hw *hw)
5632 {
5633         struct wl1271 *wl = hw->priv;
5634
5635         wl1271_debug(DEBUG_MAC80211, "mac80211 croc");
5636
5637         /* TODO: per-vif */
5638         wl1271_tx_flush(wl);
5639
5640         /*
5641          * we can't just flush_work here, because it might deadlock
5642          * (as we might get called from the same workqueue)
5643          */
5644         cancel_delayed_work_sync(&wl->roc_complete_work);
5645         wlcore_roc_completed(wl);
5646
5647         return 0;
5648 }
5649
5650 static void wlcore_op_sta_rc_update(struct ieee80211_hw *hw,
5651                                     struct ieee80211_vif *vif,
5652                                     struct ieee80211_sta *sta,
5653                                     u32 changed)
5654 {
5655         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5656
5657         wl1271_debug(DEBUG_MAC80211, "mac80211 sta_rc_update");
5658
5659         if (!(changed & IEEE80211_RC_BW_CHANGED))
5660                 return;
5661
5662         /* this callback is atomic, so schedule a new work */
5663         wlvif->rc_update_bw = sta->bandwidth;
5664         memcpy(&wlvif->rc_ht_cap, &sta->ht_cap, sizeof(sta->ht_cap));
5665         ieee80211_queue_work(hw, &wlvif->rc_update_work);
5666 }
5667
5668 static void wlcore_op_sta_statistics(struct ieee80211_hw *hw,
5669                                      struct ieee80211_vif *vif,
5670                                      struct ieee80211_sta *sta,
5671                                      struct station_info *sinfo)
5672 {
5673         struct wl1271 *wl = hw->priv;
5674         struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
5675         s8 rssi_dbm;
5676         int ret;
5677
5678         wl1271_debug(DEBUG_MAC80211, "mac80211 get_rssi");
5679
5680         mutex_lock(&wl->mutex);
5681
5682         if (unlikely(wl->state != WLCORE_STATE_ON))
5683                 goto out;
5684
5685         ret = wl1271_ps_elp_wakeup(wl);
5686         if (ret < 0)
5687                 goto out_sleep;
5688
5689         ret = wlcore_acx_average_rssi(wl, wlvif, &rssi_dbm);
5690         if (ret < 0)
5691                 goto out_sleep;
5692
5693         sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
5694         sinfo->signal = rssi_dbm;
5695
5696 out_sleep:
5697         wl1271_ps_elp_sleep(wl);
5698
5699 out:
5700         mutex_unlock(&wl->mutex);
5701 }
5702
5703 static u32 wlcore_op_get_expected_throughput(struct ieee80211_hw *hw,
5704                                              struct ieee80211_sta *sta)
5705 {
5706         struct wl1271_station *wl_sta = (struct wl1271_station *)sta->drv_priv;
5707         struct wl1271 *wl = hw->priv;
5708         u8 hlid = wl_sta->hlid;
5709
5710         /* return in units of Kbps */
5711         return (wl->links[hlid].fw_rate_mbps * 1000);
5712 }
5713
5714 static bool wl1271_tx_frames_pending(struct ieee80211_hw *hw)
5715 {
5716         struct wl1271 *wl = hw->priv;
5717         bool ret = false;
5718
5719         mutex_lock(&wl->mutex);
5720
5721         if (unlikely(wl->state != WLCORE_STATE_ON))
5722                 goto out;
5723
5724         /* packets are considered pending if in the TX queue or the FW */
5725         ret = (wl1271_tx_total_queue_count(wl) > 0) || (wl->tx_frames_cnt > 0);
5726 out:
5727         mutex_unlock(&wl->mutex);
5728
5729         return ret;
5730 }
5731
5732 /* can't be const, mac80211 writes to this */
5733 static struct ieee80211_rate wl1271_rates[] = {
5734         { .bitrate = 10,
5735           .hw_value = CONF_HW_BIT_RATE_1MBPS,
5736           .hw_value_short = CONF_HW_BIT_RATE_1MBPS, },
5737         { .bitrate = 20,
5738           .hw_value = CONF_HW_BIT_RATE_2MBPS,
5739           .hw_value_short = CONF_HW_BIT_RATE_2MBPS,
5740           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
5741         { .bitrate = 55,
5742           .hw_value = CONF_HW_BIT_RATE_5_5MBPS,
5743           .hw_value_short = CONF_HW_BIT_RATE_5_5MBPS,
5744           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
5745         { .bitrate = 110,
5746           .hw_value = CONF_HW_BIT_RATE_11MBPS,
5747           .hw_value_short = CONF_HW_BIT_RATE_11MBPS,
5748           .flags = IEEE80211_RATE_SHORT_PREAMBLE },
5749         { .bitrate = 60,
5750           .hw_value = CONF_HW_BIT_RATE_6MBPS,
5751           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
5752         { .bitrate = 90,
5753           .hw_value = CONF_HW_BIT_RATE_9MBPS,
5754           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
5755         { .bitrate = 120,
5756           .hw_value = CONF_HW_BIT_RATE_12MBPS,
5757           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
5758         { .bitrate = 180,
5759           .hw_value = CONF_HW_BIT_RATE_18MBPS,
5760           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
5761         { .bitrate = 240,
5762           .hw_value = CONF_HW_BIT_RATE_24MBPS,
5763           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
5764         { .bitrate = 360,
5765          .hw_value = CONF_HW_BIT_RATE_36MBPS,
5766          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
5767         { .bitrate = 480,
5768           .hw_value = CONF_HW_BIT_RATE_48MBPS,
5769           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
5770         { .bitrate = 540,
5771           .hw_value = CONF_HW_BIT_RATE_54MBPS,
5772           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
5773 };
5774
5775 /* can't be const, mac80211 writes to this */
5776 static struct ieee80211_channel wl1271_channels[] = {
5777         { .hw_value = 1, .center_freq = 2412, .max_power = WLCORE_MAX_TXPWR },
5778         { .hw_value = 2, .center_freq = 2417, .max_power = WLCORE_MAX_TXPWR },
5779         { .hw_value = 3, .center_freq = 2422, .max_power = WLCORE_MAX_TXPWR },
5780         { .hw_value = 4, .center_freq = 2427, .max_power = WLCORE_MAX_TXPWR },
5781         { .hw_value = 5, .center_freq = 2432, .max_power = WLCORE_MAX_TXPWR },
5782         { .hw_value = 6, .center_freq = 2437, .max_power = WLCORE_MAX_TXPWR },
5783         { .hw_value = 7, .center_freq = 2442, .max_power = WLCORE_MAX_TXPWR },
5784         { .hw_value = 8, .center_freq = 2447, .max_power = WLCORE_MAX_TXPWR },
5785         { .hw_value = 9, .center_freq = 2452, .max_power = WLCORE_MAX_TXPWR },
5786         { .hw_value = 10, .center_freq = 2457, .max_power = WLCORE_MAX_TXPWR },
5787         { .hw_value = 11, .center_freq = 2462, .max_power = WLCORE_MAX_TXPWR },
5788         { .hw_value = 12, .center_freq = 2467, .max_power = WLCORE_MAX_TXPWR },
5789         { .hw_value = 13, .center_freq = 2472, .max_power = WLCORE_MAX_TXPWR },
5790         { .hw_value = 14, .center_freq = 2484, .max_power = WLCORE_MAX_TXPWR },
5791 };
5792
5793 /* can't be const, mac80211 writes to this */
5794 static struct ieee80211_supported_band wl1271_band_2ghz = {
5795         .channels = wl1271_channels,
5796         .n_channels = ARRAY_SIZE(wl1271_channels),
5797         .bitrates = wl1271_rates,
5798         .n_bitrates = ARRAY_SIZE(wl1271_rates),
5799 };
5800
5801 /* 5 GHz data rates for WL1273 */
5802 static struct ieee80211_rate wl1271_rates_5ghz[] = {
5803         { .bitrate = 60,
5804           .hw_value = CONF_HW_BIT_RATE_6MBPS,
5805           .hw_value_short = CONF_HW_BIT_RATE_6MBPS, },
5806         { .bitrate = 90,
5807           .hw_value = CONF_HW_BIT_RATE_9MBPS,
5808           .hw_value_short = CONF_HW_BIT_RATE_9MBPS, },
5809         { .bitrate = 120,
5810           .hw_value = CONF_HW_BIT_RATE_12MBPS,
5811           .hw_value_short = CONF_HW_BIT_RATE_12MBPS, },
5812         { .bitrate = 180,
5813           .hw_value = CONF_HW_BIT_RATE_18MBPS,
5814           .hw_value_short = CONF_HW_BIT_RATE_18MBPS, },
5815         { .bitrate = 240,
5816           .hw_value = CONF_HW_BIT_RATE_24MBPS,
5817           .hw_value_short = CONF_HW_BIT_RATE_24MBPS, },
5818         { .bitrate = 360,
5819          .hw_value = CONF_HW_BIT_RATE_36MBPS,
5820          .hw_value_short = CONF_HW_BIT_RATE_36MBPS, },
5821         { .bitrate = 480,
5822           .hw_value = CONF_HW_BIT_RATE_48MBPS,
5823           .hw_value_short = CONF_HW_BIT_RATE_48MBPS, },
5824         { .bitrate = 540,
5825           .hw_value = CONF_HW_BIT_RATE_54MBPS,
5826           .hw_value_short = CONF_HW_BIT_RATE_54MBPS, },
5827 };
5828
5829 /* 5 GHz band channels for WL1273 */
5830 static struct ieee80211_channel wl1271_channels_5ghz[] = {
5831         { .hw_value = 8, .center_freq = 5040, .max_power = WLCORE_MAX_TXPWR },
5832         { .hw_value = 12, .center_freq = 5060, .max_power = WLCORE_MAX_TXPWR },
5833         { .hw_value = 16, .center_freq = 5080, .max_power = WLCORE_MAX_TXPWR },
5834         { .hw_value = 34, .center_freq = 5170, .max_power = WLCORE_MAX_TXPWR },
5835         { .hw_value = 36, .center_freq = 5180, .max_power = WLCORE_MAX_TXPWR },
5836         { .hw_value = 38, .center_freq = 5190, .max_power = WLCORE_MAX_TXPWR },
5837         { .hw_value = 40, .center_freq = 5200, .max_power = WLCORE_MAX_TXPWR },
5838         { .hw_value = 42, .center_freq = 5210, .max_power = WLCORE_MAX_TXPWR },
5839         { .hw_value = 44, .center_freq = 5220, .max_power = WLCORE_MAX_TXPWR },
5840         { .hw_value = 46, .center_freq = 5230, .max_power = WLCORE_MAX_TXPWR },
5841         { .hw_value = 48, .center_freq = 5240, .max_power = WLCORE_MAX_TXPWR },
5842         { .hw_value = 52, .center_freq = 5260, .max_power = WLCORE_MAX_TXPWR },
5843         { .hw_value = 56, .center_freq = 5280, .max_power = WLCORE_MAX_TXPWR },
5844         { .hw_value = 60, .center_freq = 5300, .max_power = WLCORE_MAX_TXPWR },
5845         { .hw_value = 64, .center_freq = 5320, .max_power = WLCORE_MAX_TXPWR },
5846         { .hw_value = 100, .center_freq = 5500, .max_power = WLCORE_MAX_TXPWR },
5847         { .hw_value = 104, .center_freq = 5520, .max_power = WLCORE_MAX_TXPWR },
5848         { .hw_value = 108, .center_freq = 5540, .max_power = WLCORE_MAX_TXPWR },
5849         { .hw_value = 112, .center_freq = 5560, .max_power = WLCORE_MAX_TXPWR },
5850         { .hw_value = 116, .center_freq = 5580, .max_power = WLCORE_MAX_TXPWR },
5851         { .hw_value = 120, .center_freq = 5600, .max_power = WLCORE_MAX_TXPWR },
5852         { .hw_value = 124, .center_freq = 5620, .max_power = WLCORE_MAX_TXPWR },
5853         { .hw_value = 128, .center_freq = 5640, .max_power = WLCORE_MAX_TXPWR },
5854         { .hw_value = 132, .center_freq = 5660, .max_power = WLCORE_MAX_TXPWR },
5855         { .hw_value = 136, .center_freq = 5680, .max_power = WLCORE_MAX_TXPWR },
5856         { .hw_value = 140, .center_freq = 5700, .max_power = WLCORE_MAX_TXPWR },
5857         { .hw_value = 149, .center_freq = 5745, .max_power = WLCORE_MAX_TXPWR },
5858         { .hw_value = 153, .center_freq = 5765, .max_power = WLCORE_MAX_TXPWR },
5859         { .hw_value = 157, .center_freq = 5785, .max_power = WLCORE_MAX_TXPWR },
5860         { .hw_value = 161, .center_freq = 5805, .max_power = WLCORE_MAX_TXPWR },
5861         { .hw_value = 165, .center_freq = 5825, .max_power = WLCORE_MAX_TXPWR },
5862 };
5863
5864 static struct ieee80211_supported_band wl1271_band_5ghz = {
5865         .channels = wl1271_channels_5ghz,
5866         .n_channels = ARRAY_SIZE(wl1271_channels_5ghz),
5867         .bitrates = wl1271_rates_5ghz,
5868         .n_bitrates = ARRAY_SIZE(wl1271_rates_5ghz),
5869 };
5870
5871 static const struct ieee80211_ops wl1271_ops = {
5872         .start = wl1271_op_start,
5873         .stop = wlcore_op_stop,
5874         .add_interface = wl1271_op_add_interface,
5875         .remove_interface = wl1271_op_remove_interface,
5876         .change_interface = wl12xx_op_change_interface,
5877 #ifdef CONFIG_PM
5878         .suspend = wl1271_op_suspend,
5879         .resume = wl1271_op_resume,
5880 #endif
5881         .config = wl1271_op_config,
5882         .prepare_multicast = wl1271_op_prepare_multicast,
5883         .configure_filter = wl1271_op_configure_filter,
5884         .tx = wl1271_op_tx,
5885         .set_key = wlcore_op_set_key,
5886         .hw_scan = wl1271_op_hw_scan,
5887         .cancel_hw_scan = wl1271_op_cancel_hw_scan,
5888         .sched_scan_start = wl1271_op_sched_scan_start,
5889         .sched_scan_stop = wl1271_op_sched_scan_stop,
5890         .bss_info_changed = wl1271_op_bss_info_changed,
5891         .set_frag_threshold = wl1271_op_set_frag_threshold,
5892         .set_rts_threshold = wl1271_op_set_rts_threshold,
5893         .conf_tx = wl1271_op_conf_tx,
5894         .get_tsf = wl1271_op_get_tsf,
5895         .get_survey = wl1271_op_get_survey,
5896         .sta_state = wl12xx_op_sta_state,
5897         .ampdu_action = wl1271_op_ampdu_action,
5898         .tx_frames_pending = wl1271_tx_frames_pending,
5899         .set_bitrate_mask = wl12xx_set_bitrate_mask,
5900         .set_default_unicast_key = wl1271_op_set_default_key_idx,
5901         .channel_switch = wl12xx_op_channel_switch,
5902         .channel_switch_beacon = wlcore_op_channel_switch_beacon,
5903         .flush = wlcore_op_flush,
5904         .remain_on_channel = wlcore_op_remain_on_channel,
5905         .cancel_remain_on_channel = wlcore_op_cancel_remain_on_channel,
5906         .add_chanctx = wlcore_op_add_chanctx,
5907         .remove_chanctx = wlcore_op_remove_chanctx,
5908         .change_chanctx = wlcore_op_change_chanctx,
5909         .assign_vif_chanctx = wlcore_op_assign_vif_chanctx,
5910         .unassign_vif_chanctx = wlcore_op_unassign_vif_chanctx,
5911         .switch_vif_chanctx = wlcore_op_switch_vif_chanctx,
5912         .sta_rc_update = wlcore_op_sta_rc_update,
5913         .sta_statistics = wlcore_op_sta_statistics,
5914         .get_expected_throughput = wlcore_op_get_expected_throughput,
5915         CFG80211_TESTMODE_CMD(wl1271_tm_cmd)
5916 };
5917
5918
5919 u8 wlcore_rate_to_idx(struct wl1271 *wl, u8 rate, enum nl80211_band band)
5920 {
5921         u8 idx;
5922
5923         BUG_ON(band >= 2);
5924
5925         if (unlikely(rate >= wl->hw_tx_rate_tbl_size)) {
5926                 wl1271_error("Illegal RX rate from HW: %d", rate);
5927                 return 0;
5928         }
5929
5930         idx = wl->band_rate_to_idx[band][rate];
5931         if (unlikely(idx == CONF_HW_RXTX_RATE_UNSUPPORTED)) {
5932                 wl1271_error("Unsupported RX rate from HW: %d", rate);
5933                 return 0;
5934         }
5935
5936         return idx;
5937 }
5938
5939 static void wl12xx_derive_mac_addresses(struct wl1271 *wl, u32 oui, u32 nic)
5940 {
5941         int i;
5942
5943         wl1271_debug(DEBUG_PROBE, "base address: oui %06x nic %06x",
5944                      oui, nic);
5945
5946         if (nic + WLCORE_NUM_MAC_ADDRESSES - wl->num_mac_addr > 0xffffff)
5947                 wl1271_warning("NIC part of the MAC address wraps around!");
5948
5949         for (i = 0; i < wl->num_mac_addr; i++) {
5950                 wl->addresses[i].addr[0] = (u8)(oui >> 16);
5951                 wl->addresses[i].addr[1] = (u8)(oui >> 8);
5952                 wl->addresses[i].addr[2] = (u8) oui;
5953                 wl->addresses[i].addr[3] = (u8)(nic >> 16);
5954                 wl->addresses[i].addr[4] = (u8)(nic >> 8);
5955                 wl->addresses[i].addr[5] = (u8) nic;
5956                 nic++;
5957         }
5958
5959         /* we may be one address short at the most */
5960         WARN_ON(wl->num_mac_addr + 1 < WLCORE_NUM_MAC_ADDRESSES);
5961
5962         /*
5963          * turn on the LAA bit in the first address and use it as
5964          * the last address.
5965          */
5966         if (wl->num_mac_addr < WLCORE_NUM_MAC_ADDRESSES) {
5967                 int idx = WLCORE_NUM_MAC_ADDRESSES - 1;
5968                 memcpy(&wl->addresses[idx], &wl->addresses[0],
5969                        sizeof(wl->addresses[0]));
5970                 /* LAA bit */
5971                 wl->addresses[idx].addr[0] |= BIT(1);
5972         }
5973
5974         wl->hw->wiphy->n_addresses = WLCORE_NUM_MAC_ADDRESSES;
5975         wl->hw->wiphy->addresses = wl->addresses;
5976 }
5977
5978 static int wl12xx_get_hw_info(struct wl1271 *wl)
5979 {
5980         int ret;
5981
5982         ret = wlcore_read_reg(wl, REG_CHIP_ID_B, &wl->chip.id);
5983         if (ret < 0)
5984                 goto out;
5985
5986         wl->fuse_oui_addr = 0;
5987         wl->fuse_nic_addr = 0;
5988
5989         ret = wl->ops->get_pg_ver(wl, &wl->hw_pg_ver);
5990         if (ret < 0)
5991                 goto out;
5992
5993         if (wl->ops->get_mac)
5994                 ret = wl->ops->get_mac(wl);
5995
5996 out:
5997         return ret;
5998 }
5999
6000 static int wl1271_register_hw(struct wl1271 *wl)
6001 {
6002         int ret;
6003         u32 oui_addr = 0, nic_addr = 0;
6004
6005         if (wl->mac80211_registered)
6006                 return 0;
6007
6008         if (wl->nvs_len >= 12) {
6009                 /* NOTE: The wl->nvs->nvs element must be first, in
6010                  * order to simplify the casting, we assume it is at
6011                  * the beginning of the wl->nvs structure.
6012                  */
6013                 u8 *nvs_ptr = (u8 *)wl->nvs;
6014
6015                 oui_addr =
6016                         (nvs_ptr[11] << 16) + (nvs_ptr[10] << 8) + nvs_ptr[6];
6017                 nic_addr =
6018                         (nvs_ptr[5] << 16) + (nvs_ptr[4] << 8) + nvs_ptr[3];
6019         }
6020
6021         /* if the MAC address is zeroed in the NVS derive from fuse */
6022         if (oui_addr == 0 && nic_addr == 0) {
6023                 oui_addr = wl->fuse_oui_addr;
6024                 /* fuse has the BD_ADDR, the WLAN addresses are the next two */
6025                 nic_addr = wl->fuse_nic_addr + 1;
6026         }
6027
6028         wl12xx_derive_mac_addresses(wl, oui_addr, nic_addr);
6029
6030         ret = ieee80211_register_hw(wl->hw);
6031         if (ret < 0) {
6032                 wl1271_error("unable to register mac80211 hw: %d", ret);
6033                 goto out;
6034         }
6035
6036         wl->mac80211_registered = true;
6037
6038         wl1271_debugfs_init(wl);
6039
6040         wl1271_notice("loaded");
6041
6042 out:
6043         return ret;
6044 }
6045
6046 static void wl1271_unregister_hw(struct wl1271 *wl)
6047 {
6048         if (wl->plt)
6049                 wl1271_plt_stop(wl);
6050
6051         ieee80211_unregister_hw(wl->hw);
6052         wl->mac80211_registered = false;
6053
6054 }
6055
6056 static int wl1271_init_ieee80211(struct wl1271 *wl)
6057 {
6058         int i;
6059         static const u32 cipher_suites[] = {
6060                 WLAN_CIPHER_SUITE_WEP40,
6061                 WLAN_CIPHER_SUITE_WEP104,
6062                 WLAN_CIPHER_SUITE_TKIP,
6063                 WLAN_CIPHER_SUITE_CCMP,
6064                 WL1271_CIPHER_SUITE_GEM,
6065         };
6066
6067         /* The tx descriptor buffer */
6068         wl->hw->extra_tx_headroom = sizeof(struct wl1271_tx_hw_descr);
6069
6070         if (wl->quirks & WLCORE_QUIRK_TKIP_HEADER_SPACE)
6071                 wl->hw->extra_tx_headroom += WL1271_EXTRA_SPACE_TKIP;
6072
6073         /* unit us */
6074         /* FIXME: find a proper value */
6075         wl->hw->max_listen_interval = wl->conf.conn.max_listen_interval;
6076
6077         ieee80211_hw_set(wl->hw, SUPPORT_FAST_XMIT);
6078         ieee80211_hw_set(wl->hw, CHANCTX_STA_CSA);
6079         ieee80211_hw_set(wl->hw, QUEUE_CONTROL);
6080         ieee80211_hw_set(wl->hw, TX_AMPDU_SETUP_IN_HW);
6081         ieee80211_hw_set(wl->hw, AMPDU_AGGREGATION);
6082         ieee80211_hw_set(wl->hw, AP_LINK_PS);
6083         ieee80211_hw_set(wl->hw, SPECTRUM_MGMT);
6084         ieee80211_hw_set(wl->hw, REPORTS_TX_ACK_STATUS);
6085         ieee80211_hw_set(wl->hw, CONNECTION_MONITOR);
6086         ieee80211_hw_set(wl->hw, HAS_RATE_CONTROL);
6087         ieee80211_hw_set(wl->hw, SUPPORTS_DYNAMIC_PS);
6088         ieee80211_hw_set(wl->hw, SIGNAL_DBM);
6089         ieee80211_hw_set(wl->hw, SUPPORTS_PS);
6090
6091         wl->hw->wiphy->cipher_suites = cipher_suites;
6092         wl->hw->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
6093
6094         wl->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
6095                                          BIT(NL80211_IFTYPE_AP) |
6096                                          BIT(NL80211_IFTYPE_P2P_DEVICE) |
6097                                          BIT(NL80211_IFTYPE_P2P_CLIENT) |
6098 #ifdef CONFIG_MAC80211_MESH
6099                                          BIT(NL80211_IFTYPE_MESH_POINT) |
6100 #endif
6101                                          BIT(NL80211_IFTYPE_P2P_GO);
6102
6103         wl->hw->wiphy->max_scan_ssids = 1;
6104         wl->hw->wiphy->max_sched_scan_ssids = 16;
6105         wl->hw->wiphy->max_match_sets = 16;
6106         /*
6107          * Maximum length of elements in scanning probe request templates
6108          * should be the maximum length possible for a template, without
6109          * the IEEE80211 header of the template
6110          */
6111         wl->hw->wiphy->max_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
6112                         sizeof(struct ieee80211_header);
6113
6114         wl->hw->wiphy->max_sched_scan_ie_len = WL1271_CMD_TEMPL_MAX_SIZE -
6115                 sizeof(struct ieee80211_header);
6116
6117         wl->hw->wiphy->max_remain_on_channel_duration = 30000;
6118
6119         wl->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD |
6120                                 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
6121                                 WIPHY_FLAG_SUPPORTS_SCHED_SCAN |
6122                                 WIPHY_FLAG_HAS_CHANNEL_SWITCH;
6123
6124         /* make sure all our channels fit in the scanned_ch bitmask */
6125         BUILD_BUG_ON(ARRAY_SIZE(wl1271_channels) +
6126                      ARRAY_SIZE(wl1271_channels_5ghz) >
6127                      WL1271_MAX_CHANNELS);
6128         /*
6129         * clear channel flags from the previous usage
6130         * and restore max_power & max_antenna_gain values.
6131         */
6132         for (i = 0; i < ARRAY_SIZE(wl1271_channels); i++) {
6133                 wl1271_band_2ghz.channels[i].flags = 0;
6134                 wl1271_band_2ghz.channels[i].max_power = WLCORE_MAX_TXPWR;
6135                 wl1271_band_2ghz.channels[i].max_antenna_gain = 0;
6136         }
6137
6138         for (i = 0; i < ARRAY_SIZE(wl1271_channels_5ghz); i++) {
6139                 wl1271_band_5ghz.channels[i].flags = 0;
6140                 wl1271_band_5ghz.channels[i].max_power = WLCORE_MAX_TXPWR;
6141                 wl1271_band_5ghz.channels[i].max_antenna_gain = 0;
6142         }
6143
6144         /*
6145          * We keep local copies of the band structs because we need to
6146          * modify them on a per-device basis.
6147          */
6148         memcpy(&wl->bands[NL80211_BAND_2GHZ], &wl1271_band_2ghz,
6149                sizeof(wl1271_band_2ghz));
6150         memcpy(&wl->bands[NL80211_BAND_2GHZ].ht_cap,
6151                &wl->ht_cap[NL80211_BAND_2GHZ],
6152                sizeof(*wl->ht_cap));
6153         memcpy(&wl->bands[NL80211_BAND_5GHZ], &wl1271_band_5ghz,
6154                sizeof(wl1271_band_5ghz));
6155         memcpy(&wl->bands[NL80211_BAND_5GHZ].ht_cap,
6156                &wl->ht_cap[NL80211_BAND_5GHZ],
6157                sizeof(*wl->ht_cap));
6158
6159         wl->hw->wiphy->bands[NL80211_BAND_2GHZ] =
6160                 &wl->bands[NL80211_BAND_2GHZ];
6161         wl->hw->wiphy->bands[NL80211_BAND_5GHZ] =
6162                 &wl->bands[NL80211_BAND_5GHZ];
6163
6164         /*
6165          * allow 4 queues per mac address we support +
6166          * 1 cab queue per mac + one global offchannel Tx queue
6167          */
6168         wl->hw->queues = (NUM_TX_QUEUES + 1) * WLCORE_NUM_MAC_ADDRESSES + 1;
6169
6170         /* the last queue is the offchannel queue */
6171         wl->hw->offchannel_tx_hw_queue = wl->hw->queues - 1;
6172         wl->hw->max_rates = 1;
6173
6174         wl->hw->wiphy->reg_notifier = wl1271_reg_notify;
6175
6176         /* the FW answers probe-requests in AP-mode */
6177         wl->hw->wiphy->flags |= WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
6178         wl->hw->wiphy->probe_resp_offload =
6179                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
6180                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
6181                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
6182
6183         /* allowed interface combinations */
6184         wl->hw->wiphy->iface_combinations = wl->iface_combinations;
6185         wl->hw->wiphy->n_iface_combinations = wl->n_iface_combinations;
6186
6187         /* register vendor commands */
6188         wlcore_set_vendor_commands(wl->hw->wiphy);
6189
6190         SET_IEEE80211_DEV(wl->hw, wl->dev);
6191
6192         wl->hw->sta_data_size = sizeof(struct wl1271_station);
6193         wl->hw->vif_data_size = sizeof(struct wl12xx_vif);
6194
6195         wl->hw->max_rx_aggregation_subframes = wl->conf.ht.rx_ba_win_size;
6196
6197         return 0;
6198 }
6199
6200 struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size, u32 aggr_buf_size,
6201                                      u32 mbox_size)
6202 {
6203         struct ieee80211_hw *hw;
6204         struct wl1271 *wl;
6205         int i, j, ret;
6206         unsigned int order;
6207
6208         hw = ieee80211_alloc_hw(sizeof(*wl), &wl1271_ops);
6209         if (!hw) {
6210                 wl1271_error("could not alloc ieee80211_hw");
6211                 ret = -ENOMEM;
6212                 goto err_hw_alloc;
6213         }
6214
6215         wl = hw->priv;
6216         memset(wl, 0, sizeof(*wl));
6217
6218         wl->priv = kzalloc(priv_size, GFP_KERNEL);
6219         if (!wl->priv) {
6220                 wl1271_error("could not alloc wl priv");
6221                 ret = -ENOMEM;
6222                 goto err_priv_alloc;
6223         }
6224
6225         INIT_LIST_HEAD(&wl->wlvif_list);
6226
6227         wl->hw = hw;
6228
6229         /*
6230          * wl->num_links is not configured yet, so just use WLCORE_MAX_LINKS.
6231          * we don't allocate any additional resource here, so that's fine.
6232          */
6233         for (i = 0; i < NUM_TX_QUEUES; i++)
6234                 for (j = 0; j < WLCORE_MAX_LINKS; j++)
6235                         skb_queue_head_init(&wl->links[j].tx_queue[i]);
6236
6237         skb_queue_head_init(&wl->deferred_rx_queue);
6238         skb_queue_head_init(&wl->deferred_tx_queue);
6239
6240         INIT_DELAYED_WORK(&wl->elp_work, wl1271_elp_work);
6241         INIT_WORK(&wl->netstack_work, wl1271_netstack_work);
6242         INIT_WORK(&wl->tx_work, wl1271_tx_work);
6243         INIT_WORK(&wl->recovery_work, wl1271_recovery_work);
6244         INIT_DELAYED_WORK(&wl->scan_complete_work, wl1271_scan_complete_work);
6245         INIT_DELAYED_WORK(&wl->roc_complete_work, wlcore_roc_complete_work);
6246         INIT_DELAYED_WORK(&wl->tx_watchdog_work, wl12xx_tx_watchdog_work);
6247
6248         wl->freezable_wq = create_freezable_workqueue("wl12xx_wq");
6249         if (!wl->freezable_wq) {
6250                 ret = -ENOMEM;
6251                 goto err_hw;
6252         }
6253
6254         wl->channel = 0;
6255         wl->rx_counter = 0;
6256         wl->power_level = WL1271_DEFAULT_POWER_LEVEL;
6257         wl->band = NL80211_BAND_2GHZ;
6258         wl->channel_type = NL80211_CHAN_NO_HT;
6259         wl->flags = 0;
6260         wl->sg_enabled = true;
6261         wl->sleep_auth = WL1271_PSM_ILLEGAL;
6262         wl->recovery_count = 0;
6263         wl->hw_pg_ver = -1;
6264         wl->ap_ps_map = 0;
6265         wl->ap_fw_ps_map = 0;
6266         wl->quirks = 0;
6267         wl->system_hlid = WL12XX_SYSTEM_HLID;
6268         wl->active_sta_count = 0;
6269         wl->active_link_count = 0;
6270         wl->fwlog_size = 0;
6271
6272         /* The system link is always allocated */
6273         __set_bit(WL12XX_SYSTEM_HLID, wl->links_map);
6274
6275         memset(wl->tx_frames_map, 0, sizeof(wl->tx_frames_map));
6276         for (i = 0; i < wl->num_tx_desc; i++)
6277                 wl->tx_frames[i] = NULL;
6278
6279         spin_lock_init(&wl->wl_lock);
6280
6281         wl->state = WLCORE_STATE_OFF;
6282         wl->fw_type = WL12XX_FW_TYPE_NONE;
6283         mutex_init(&wl->mutex);
6284         mutex_init(&wl->flush_mutex);
6285         init_completion(&wl->nvs_loading_complete);
6286
6287         order = get_order(aggr_buf_size);
6288         wl->aggr_buf = (u8 *)__get_free_pages(GFP_KERNEL, order);
6289         if (!wl->aggr_buf) {
6290                 ret = -ENOMEM;
6291                 goto err_wq;
6292         }
6293         wl->aggr_buf_size = aggr_buf_size;
6294
6295         wl->dummy_packet = wl12xx_alloc_dummy_packet(wl);
6296         if (!wl->dummy_packet) {
6297                 ret = -ENOMEM;
6298                 goto err_aggr;
6299         }
6300
6301         /* Allocate one page for the FW log */
6302         wl->fwlog = (u8 *)get_zeroed_page(GFP_KERNEL);
6303         if (!wl->fwlog) {
6304                 ret = -ENOMEM;
6305                 goto err_dummy_packet;
6306         }
6307
6308         wl->mbox_size = mbox_size;
6309         wl->mbox = kmalloc(wl->mbox_size, GFP_KERNEL | GFP_DMA);
6310         if (!wl->mbox) {
6311                 ret = -ENOMEM;
6312                 goto err_fwlog;
6313         }
6314
6315         wl->buffer_32 = kmalloc(sizeof(*wl->buffer_32), GFP_KERNEL);
6316         if (!wl->buffer_32) {
6317                 ret = -ENOMEM;
6318                 goto err_mbox;
6319         }
6320
6321         return hw;
6322
6323 err_mbox:
6324         kfree(wl->mbox);
6325
6326 err_fwlog:
6327         free_page((unsigned long)wl->fwlog);
6328
6329 err_dummy_packet:
6330         dev_kfree_skb(wl->dummy_packet);
6331
6332 err_aggr:
6333         free_pages((unsigned long)wl->aggr_buf, order);
6334
6335 err_wq:
6336         destroy_workqueue(wl->freezable_wq);
6337
6338 err_hw:
6339         wl1271_debugfs_exit(wl);
6340         kfree(wl->priv);
6341
6342 err_priv_alloc:
6343         ieee80211_free_hw(hw);
6344
6345 err_hw_alloc:
6346
6347         return ERR_PTR(ret);
6348 }
6349 EXPORT_SYMBOL_GPL(wlcore_alloc_hw);
6350
6351 int wlcore_free_hw(struct wl1271 *wl)
6352 {
6353         /* Unblock any fwlog readers */
6354         mutex_lock(&wl->mutex);
6355         wl->fwlog_size = -1;
6356         mutex_unlock(&wl->mutex);
6357
6358         wlcore_sysfs_free(wl);
6359
6360         kfree(wl->buffer_32);
6361         kfree(wl->mbox);
6362         free_page((unsigned long)wl->fwlog);
6363         dev_kfree_skb(wl->dummy_packet);
6364         free_pages((unsigned long)wl->aggr_buf, get_order(wl->aggr_buf_size));
6365
6366         wl1271_debugfs_exit(wl);
6367
6368         vfree(wl->fw);
6369         wl->fw = NULL;
6370         wl->fw_type = WL12XX_FW_TYPE_NONE;
6371         kfree(wl->nvs);
6372         wl->nvs = NULL;
6373
6374         kfree(wl->raw_fw_status);
6375         kfree(wl->fw_status);
6376         kfree(wl->tx_res_if);
6377         destroy_workqueue(wl->freezable_wq);
6378
6379         kfree(wl->priv);
6380         ieee80211_free_hw(wl->hw);
6381
6382         return 0;
6383 }
6384 EXPORT_SYMBOL_GPL(wlcore_free_hw);
6385
6386 #ifdef CONFIG_PM
6387 static const struct wiphy_wowlan_support wlcore_wowlan_support = {
6388         .flags = WIPHY_WOWLAN_ANY,
6389         .n_patterns = WL1271_MAX_RX_FILTERS,
6390         .pattern_min_len = 1,
6391         .pattern_max_len = WL1271_RX_FILTER_MAX_PATTERN_SIZE,
6392 };
6393 #endif
6394
6395 static irqreturn_t wlcore_hardirq(int irq, void *cookie)
6396 {
6397         return IRQ_WAKE_THREAD;
6398 }
6399
6400 static void wlcore_nvs_cb(const struct firmware *fw, void *context)
6401 {
6402         struct wl1271 *wl = context;
6403         struct platform_device *pdev = wl->pdev;
6404         struct wlcore_platdev_data *pdev_data = dev_get_platdata(&pdev->dev);
6405         struct resource *res;
6406
6407         int ret;
6408         irq_handler_t hardirq_fn = NULL;
6409
6410         if (fw) {
6411                 wl->nvs = kmemdup(fw->data, fw->size, GFP_KERNEL);
6412                 if (!wl->nvs) {
6413                         wl1271_error("Could not allocate nvs data");
6414                         goto out;
6415                 }
6416                 wl->nvs_len = fw->size;
6417         } else {
6418                 wl1271_debug(DEBUG_BOOT, "Could not get nvs file %s",
6419                              WL12XX_NVS_NAME);
6420                 wl->nvs = NULL;
6421                 wl->nvs_len = 0;
6422         }
6423
6424         ret = wl->ops->setup(wl);
6425         if (ret < 0)
6426                 goto out_free_nvs;
6427
6428         BUG_ON(wl->num_tx_desc > WLCORE_MAX_TX_DESCRIPTORS);
6429
6430         /* adjust some runtime configuration parameters */
6431         wlcore_adjust_conf(wl);
6432
6433         res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
6434         if (!res) {
6435                 wl1271_error("Could not get IRQ resource");
6436                 goto out_free_nvs;
6437         }
6438
6439         wl->irq = res->start;
6440         wl->irq_flags = res->flags & IRQF_TRIGGER_MASK;
6441         wl->if_ops = pdev_data->if_ops;
6442
6443         if (wl->irq_flags & (IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING))
6444                 hardirq_fn = wlcore_hardirq;
6445         else
6446                 wl->irq_flags |= IRQF_ONESHOT;
6447
6448         ret = wl12xx_set_power_on(wl);
6449         if (ret < 0)
6450                 goto out_free_nvs;
6451
6452         ret = wl12xx_get_hw_info(wl);
6453         if (ret < 0) {
6454                 wl1271_error("couldn't get hw info");
6455                 wl1271_power_off(wl);
6456                 goto out_free_nvs;
6457         }
6458
6459         ret = request_threaded_irq(wl->irq, hardirq_fn, wlcore_irq,
6460                                    wl->irq_flags, pdev->name, wl);
6461         if (ret < 0) {
6462                 wl1271_error("interrupt configuration failed");
6463                 wl1271_power_off(wl);
6464                 goto out_free_nvs;
6465         }
6466
6467 #ifdef CONFIG_PM
6468         ret = enable_irq_wake(wl->irq);
6469         if (!ret) {
6470                 wl->irq_wake_enabled = true;
6471                 device_init_wakeup(wl->dev, 1);
6472                 if (pdev_data->pwr_in_suspend)
6473                         wl->hw->wiphy->wowlan = &wlcore_wowlan_support;
6474         }
6475 #endif
6476         disable_irq(wl->irq);
6477         wl1271_power_off(wl);
6478
6479         ret = wl->ops->identify_chip(wl);
6480         if (ret < 0)
6481                 goto out_irq;
6482
6483         ret = wl1271_init_ieee80211(wl);
6484         if (ret)
6485                 goto out_irq;
6486
6487         ret = wl1271_register_hw(wl);
6488         if (ret)
6489                 goto out_irq;
6490
6491         ret = wlcore_sysfs_init(wl);
6492         if (ret)
6493                 goto out_unreg;
6494
6495         wl->initialized = true;
6496         goto out;
6497
6498 out_unreg:
6499         wl1271_unregister_hw(wl);
6500
6501 out_irq:
6502         free_irq(wl->irq, wl);
6503
6504 out_free_nvs:
6505         kfree(wl->nvs);
6506
6507 out:
6508         release_firmware(fw);
6509         complete_all(&wl->nvs_loading_complete);
6510 }
6511
6512 int wlcore_probe(struct wl1271 *wl, struct platform_device *pdev)
6513 {
6514         int ret;
6515
6516         if (!wl->ops || !wl->ptable)
6517                 return -EINVAL;
6518
6519         wl->dev = &pdev->dev;
6520         wl->pdev = pdev;
6521         platform_set_drvdata(pdev, wl);
6522
6523         ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
6524                                       WL12XX_NVS_NAME, &pdev->dev, GFP_KERNEL,
6525                                       wl, wlcore_nvs_cb);
6526         if (ret < 0) {
6527                 wl1271_error("request_firmware_nowait failed: %d", ret);
6528                 complete_all(&wl->nvs_loading_complete);
6529         }
6530
6531         return ret;
6532 }
6533 EXPORT_SYMBOL_GPL(wlcore_probe);
6534
6535 int wlcore_remove(struct platform_device *pdev)
6536 {
6537         struct wl1271 *wl = platform_get_drvdata(pdev);
6538
6539         wait_for_completion(&wl->nvs_loading_complete);
6540         if (!wl->initialized)
6541                 return 0;
6542
6543         if (wl->irq_wake_enabled) {
6544                 device_init_wakeup(wl->dev, 0);
6545                 disable_irq_wake(wl->irq);
6546         }
6547         wl1271_unregister_hw(wl);
6548         free_irq(wl->irq, wl);
6549         wlcore_free_hw(wl);
6550
6551         return 0;
6552 }
6553 EXPORT_SYMBOL_GPL(wlcore_remove);
6554
6555 u32 wl12xx_debug_level = DEBUG_NONE;
6556 EXPORT_SYMBOL_GPL(wl12xx_debug_level);
6557 module_param_named(debug_level, wl12xx_debug_level, uint, S_IRUSR | S_IWUSR);
6558 MODULE_PARM_DESC(debug_level, "wl12xx debugging level");
6559
6560 module_param_named(fwlog, fwlog_param, charp, 0);
6561 MODULE_PARM_DESC(fwlog,
6562                  "FW logger options: continuous, dbgpins or disable");
6563
6564 module_param(fwlog_mem_blocks, int, S_IRUSR | S_IWUSR);
6565 MODULE_PARM_DESC(fwlog_mem_blocks, "fwlog mem_blocks");
6566
6567 module_param(bug_on_recovery, int, S_IRUSR | S_IWUSR);
6568 MODULE_PARM_DESC(bug_on_recovery, "BUG() on fw recovery");
6569
6570 module_param(no_recovery, int, S_IRUSR | S_IWUSR);
6571 MODULE_PARM_DESC(no_recovery, "Prevent HW recovery. FW will remain stuck.");
6572
6573 MODULE_LICENSE("GPL");
6574 MODULE_AUTHOR("Luciano Coelho <coelho@ti.com>");
6575 MODULE_AUTHOR("Juuso Oikarinen <juuso.oikarinen@nokia.com>");
6576 MODULE_FIRMWARE(WL12XX_NVS_NAME);