drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/slab.h>
  36 #include <linux/delay.h>
  37 #include <linux/sched.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-agn-calib.h"
  52 #include "iwl-agn.h"
  53 #include "iwl-shared.h"
  54 #include "iwl-trans.h"
  55 #include "iwl-op-mode.h"
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  */
  66 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  67
  68 #ifdef CONFIG_IWLWIFI_DEBUG
  69 #define VD "d"
  70 #else
  71 #define VD
  72 #endif
  73
  74 #define DRV_VERSION     IWLWIFI_VERSION VD
  75
  76
  77 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  78 MODULE_VERSION(DRV_VERSION);
  79 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  80 MODULE_LICENSE("GPL");
  81 MODULE_ALIAS("iwlagn");
  82
  83 void iwl_update_chain_flags(struct iwl_priv *priv)
  84 {
  85         struct iwl_rxon_context *ctx;
  86
  87         for_each_context(priv, ctx) {
  88                 iwlagn_set_rxon_chain(priv, ctx);
  89                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  90                         iwlagn_commit_rxon(priv, ctx);
  91         }
  92 }
  93
  94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  96                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  97                                u8 *beacon, u32 frame_size)
  98 {
  99         u16 tim_idx;
 100         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 101
 102         /*
 103          * The index is relative to frame start but we start looking at the
 104          * variable-length part of the beacon.
 105          */
 106         tim_idx = mgmt->u.beacon.variable - beacon;
 107
 108         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 109         while ((tim_idx < (frame_size - 2)) &&
 110                         (beacon[tim_idx] != WLAN_EID_TIM))
 111                 tim_idx += beacon[tim_idx+1] + 2;
 112
 113         /* If TIM field was found, set variables */
 114         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 115                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 116                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 117         } else
 118                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 119 }
 120
 121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 122 {
 123         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 124         struct iwl_host_cmd cmd = {
 125                 .id = REPLY_TX_BEACON,
 126                 .flags = CMD_SYNC,
 127         };
 128         struct ieee80211_tx_info *info;
 129         u32 frame_size;
 130         u32 rate_flags;
 131         u32 rate;
 132
 133         /*
 134          * We have to set up the TX command, the TX Beacon command, and the
 135          * beacon contents.
 136          */
 137
 138         lockdep_assert_held(&priv->mutex);
 139
 140         if (!priv->beacon_ctx) {
 141                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 142                 return 0;
 143         }
 144
 145         if (WARN_ON(!priv->beacon_skb))
 146                 return -EINVAL;
 147
 148         /* Allocate beacon command */
 149         if (!priv->beacon_cmd)
 150                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 151         tx_beacon_cmd = priv->beacon_cmd;
 152         if (!tx_beacon_cmd)
 153                 return -ENOMEM;
 154
 155         frame_size = priv->beacon_skb->len;
 156
 157         /* Set up TX command fields */
 158         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 159         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 160         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 161         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 162                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 163
 164         /* Set up TX beacon command fields */
 165         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 166                            frame_size);
 167
 168         /* Set up packet rate and flags */
 169         info = IEEE80211_SKB_CB(priv->beacon_skb);
 170
 171         /*
 172          * Let's set up the rate at least somewhat correctly;
 173          * it will currently not actually be used by the uCode,
 174          * it uses the broadcast station's rate instead.
 175          */
 176         if (info->control.rates[0].idx < 0 ||
 177             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 178                 rate = 0;
 179         else
 180                 rate = info->control.rates[0].idx;
 181
 182         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 183                                               priv->hw_params.valid_tx_ant);
 184         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 185
 186         /* In mac80211, rates for 5 GHz start at 0 */
 187         if (info->band == IEEE80211_BAND_5GHZ)
 188                 rate += IWL_FIRST_OFDM_RATE;
 189         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 190                 rate_flags |= RATE_MCS_CCK_MSK;
 191
 192         tx_beacon_cmd->tx.rate_n_flags =
 193                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 194
 195         /* Submit command */
 196         cmd.len[0] = sizeof(*tx_beacon_cmd);
 197         cmd.data[0] = tx_beacon_cmd;
 198         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 199         cmd.len[1] = frame_size;
 200         cmd.data[1] = priv->beacon_skb->data;
 201         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 202
 203         return iwl_dvm_send_cmd(priv, &cmd);
 204 }
 205
 206 static void iwl_bg_beacon_update(struct work_struct *work)
 207 {
 208         struct iwl_priv *priv =
 209                 container_of(work, struct iwl_priv, beacon_update);
 210         struct sk_buff *beacon;
 211
 212         mutex_lock(&priv->mutex);
 213         if (!priv->beacon_ctx) {
 214                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 215                 goto out;
 216         }
 217
 218         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 219                 /*
 220                  * The ucode will send beacon notifications even in
 221                  * IBSS mode, but we don't want to process them. But
 222                  * we need to defer the type check to here due to
 223                  * requiring locking around the beacon_ctx access.
 224                  */
 225                 goto out;
 226         }
 227
 228         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 229         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 230         if (!beacon) {
 231                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 232                 goto out;
 233         }
 234
 235         /* new beacon skb is allocated every time; dispose previous.*/
 236         dev_kfree_skb(priv->beacon_skb);
 237
 238         priv->beacon_skb = beacon;
 239
 240         iwlagn_send_beacon_cmd(priv);
 241  out:
 242         mutex_unlock(&priv->mutex);
 243 }
 244
 245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 246 {
 247         struct iwl_priv *priv =
 248                 container_of(work, struct iwl_priv, bt_runtime_config);
 249
 250         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 251                 return;
 252
 253         /* dont send host command if rf-kill is on */
 254         if (!iwl_is_ready_rf(priv))
 255                 return;
 256         iwlagn_send_advance_bt_config(priv);
 257 }
 258
 259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 260 {
 261         struct iwl_priv *priv =
 262                 container_of(work, struct iwl_priv, bt_full_concurrency);
 263         struct iwl_rxon_context *ctx;
 264
 265         mutex_lock(&priv->mutex);
 266
 267         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 268                 goto out;
 269
 270         /* dont send host command if rf-kill is on */
 271         if (!iwl_is_ready_rf(priv))
 272                 goto out;
 273
 274         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 275                        priv->bt_full_concurrent ?
 276                        "full concurrency" : "3-wire");
 277
 278         /*
 279          * LQ & RXON updated cmds must be sent before BT Config cmd
 280          * to avoid 3-wire collisions
 281          */
 282         for_each_context(priv, ctx) {
 283                 iwlagn_set_rxon_chain(priv, ctx);
 284                 iwlagn_commit_rxon(priv, ctx);
 285         }
 286
 287         iwlagn_send_advance_bt_config(priv);
 288 out:
 289         mutex_unlock(&priv->mutex);
 290 }
 291
 292 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 293 {
 294         struct iwl_statistics_cmd statistics_cmd = {
 295                 .configuration_flags =
 296                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 297         };
 298
 299         if (flags & CMD_ASYNC)
 300                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 301                                         CMD_ASYNC,
 302                                         sizeof(struct iwl_statistics_cmd),
 303                                         &statistics_cmd);
 304         else
 305                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 306                                         CMD_SYNC,
 307                                         sizeof(struct iwl_statistics_cmd),
 308                                         &statistics_cmd);
 309 }
 310
 311 /**
 312  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 313  *
 314  * This callback is provided in order to send a statistics request.
 315  *
 316  * This timer function is continually reset to execute within
 317  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 318  * was received.  We need to ensure we receive the statistics in order
 319  * to update the temperature used for calibrating the TXPOWER.
 320  */
 321 static void iwl_bg_statistics_periodic(unsigned long data)
 322 {
 323         struct iwl_priv *priv = (struct iwl_priv *)data;
 324
 325         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 326                 return;
 327
 328         /* dont send host command if rf-kill is on */
 329         if (!iwl_is_ready_rf(priv))
 330                 return;
 331
 332         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 333 }
 334
 335
 336 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 337                                         u32 start_idx, u32 num_events,
 338                                         u32 capacity, u32 mode)
 339 {
 340         u32 i;
 341         u32 ptr;        /* SRAM byte address of log data */
 342         u32 ev, time, data; /* event log data */
 343         unsigned long reg_flags;
 344
 345         if (mode == 0)
 346                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 347         else
 348                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 349
 350         /* Make sure device is powered up for SRAM reads */
 351         spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
 352         if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
 353                 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 354                 return;
 355         }
 356
 357         /* Set starting address; reads will auto-increment */
 358         iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
 359
 360         /*
 361          * Refuse to read more than would have fit into the log from
 362          * the current start_idx. This used to happen due to the race
 363          * described below, but now WARN because the code below should
 364          * prevent it from happening here.
 365          */
 366         if (WARN_ON(num_events > capacity - start_idx))
 367                 num_events = capacity - start_idx;
 368
 369         /*
 370          * "time" is actually "data" for mode 0 (no timestamp).
 371          * place event id # at far right for easier visual parsing.
 372          */
 373         for (i = 0; i < num_events; i++) {
 374                 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 375                 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 376                 if (mode == 0) {
 377                         trace_iwlwifi_dev_ucode_cont_event(
 378                                         trans(priv)->dev, 0, time, ev);
 379                 } else {
 380                         data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 381                         trace_iwlwifi_dev_ucode_cont_event(
 382                                         trans(priv)->dev, time, data, ev);
 383                 }
 384         }
 385         /* Allow device to power down */
 386         iwl_release_nic_access(trans(priv));
 387         spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 388 }
 389
 390 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 391 {
 392         u32 capacity;   /* event log capacity in # entries */
 393         struct {
 394                 u32 capacity;
 395                 u32 mode;
 396                 u32 wrap_counter;
 397                 u32 write_counter;
 398         } __packed read;
 399         u32 base;       /* SRAM byte address of event log header */
 400         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 401         u32 num_wraps;  /* # times uCode wrapped to top of log */
 402         u32 next_entry; /* index of next entry to be written by uCode */
 403
 404         base = priv->device_pointers.log_event_table;
 405         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 406                 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
 407
 408                 capacity = read.capacity;
 409                 mode = read.mode;
 410                 num_wraps = read.wrap_counter;
 411                 next_entry = read.write_counter;
 412         } else
 413                 return;
 414
 415         /*
 416          * Unfortunately, the uCode doesn't use temporary variables.
 417          * Therefore, it can happen that we read next_entry == capacity,
 418          * which really means next_entry == 0.
 419          */
 420         if (unlikely(next_entry == capacity))
 421                 next_entry = 0;
 422         /*
 423          * Additionally, the uCode increases the write pointer before
 424          * the wraps counter, so if the write pointer is smaller than
 425          * the old write pointer (wrap occurred) but we read that no
 426          * wrap occurred, we actually read between the next_entry and
 427          * num_wraps update (this does happen in practice!!) -- take
 428          * that into account by increasing num_wraps.
 429          */
 430         if (unlikely(next_entry < priv->event_log.next_entry &&
 431                      num_wraps == priv->event_log.num_wraps))
 432                 num_wraps++;
 433
 434         if (num_wraps == priv->event_log.num_wraps) {
 435                 iwl_print_cont_event_trace(
 436                         priv, base, priv->event_log.next_entry,
 437                         next_entry - priv->event_log.next_entry,
 438                         capacity, mode);
 439
 440                 priv->event_log.non_wraps_count++;
 441         } else {
 442                 if (num_wraps - priv->event_log.num_wraps > 1)
 443                         priv->event_log.wraps_more_count++;
 444                 else
 445                         priv->event_log.wraps_once_count++;
 446
 447                 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
 448                                 num_wraps - priv->event_log.num_wraps,
 449                                 next_entry, priv->event_log.next_entry);
 450
 451                 if (next_entry < priv->event_log.next_entry) {
 452                         iwl_print_cont_event_trace(
 453                                 priv, base, priv->event_log.next_entry,
 454                                 capacity - priv->event_log.next_entry,
 455                                 capacity, mode);
 456
 457                         iwl_print_cont_event_trace(
 458                                 priv, base, 0, next_entry, capacity, mode);
 459                 } else {
 460                         iwl_print_cont_event_trace(
 461                                 priv, base, next_entry,
 462                                 capacity - next_entry,
 463                                 capacity, mode);
 464
 465                         iwl_print_cont_event_trace(
 466                                 priv, base, 0, next_entry, capacity, mode);
 467                 }
 468         }
 469
 470         priv->event_log.num_wraps = num_wraps;
 471         priv->event_log.next_entry = next_entry;
 472 }
 473
 474 /**
 475  * iwl_bg_ucode_trace - Timer callback to log ucode event
 476  *
 477  * The timer is continually set to execute every
 478  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 479  * this function is to perform continuous uCode event logging operation
 480  * if enabled
 481  */
 482 static void iwl_bg_ucode_trace(unsigned long data)
 483 {
 484         struct iwl_priv *priv = (struct iwl_priv *)data;
 485
 486         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 487                 return;
 488
 489         if (priv->event_log.ucode_trace) {
 490                 iwl_continuous_event_trace(priv);
 491                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 492                 mod_timer(&priv->ucode_trace,
 493                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 494         }
 495 }
 496
 497 static void iwl_bg_tx_flush(struct work_struct *work)
 498 {
 499         struct iwl_priv *priv =
 500                 container_of(work, struct iwl_priv, tx_flush);
 501
 502         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 503                 return;
 504
 505         /* do nothing if rf-kill is on */
 506         if (!iwl_is_ready_rf(priv))
 507                 return;
 508
 509         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 510         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 511 }
 512
 513 /*
 514  * queue/FIFO/AC mapping definitions
 515  */
 516
 517 #define IWL_TX_FIFO_BK          0       /* shared */
 518 #define IWL_TX_FIFO_BE          1
 519 #define IWL_TX_FIFO_VI          2       /* shared */
 520 #define IWL_TX_FIFO_VO          3
 521 #define IWL_TX_FIFO_BK_IPAN     IWL_TX_FIFO_BK
 522 #define IWL_TX_FIFO_BE_IPAN     4
 523 #define IWL_TX_FIFO_VI_IPAN     IWL_TX_FIFO_VI
 524 #define IWL_TX_FIFO_VO_IPAN     5
 525 /* re-uses the VO FIFO, uCode will properly flush/schedule */
 526 #define IWL_TX_FIFO_AUX         5
 527 #define IWL_TX_FIFO_UNUSED      -1
 528
 529 #define IWLAGN_CMD_FIFO_NUM     7
 530
 531 /*
 532  * This queue number is required for proper operation
 533  * because the ucode will stop/start the scheduler as
 534  * required.
 535  */
 536 #define IWL_IPAN_MCAST_QUEUE    8
 537
 538 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
 539         IWL_TX_FIFO_VO,
 540         IWL_TX_FIFO_VI,
 541         IWL_TX_FIFO_BE,
 542         IWL_TX_FIFO_BK,
 543         IWLAGN_CMD_FIFO_NUM,
 544 };
 545
 546 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
 547         IWL_TX_FIFO_VO,
 548         IWL_TX_FIFO_VI,
 549         IWL_TX_FIFO_BE,
 550         IWL_TX_FIFO_BK,
 551         IWL_TX_FIFO_BK_IPAN,
 552         IWL_TX_FIFO_BE_IPAN,
 553         IWL_TX_FIFO_VI_IPAN,
 554         IWL_TX_FIFO_VO_IPAN,
 555         IWL_TX_FIFO_BE_IPAN,
 556         IWLAGN_CMD_FIFO_NUM,
 557         IWL_TX_FIFO_AUX,
 558 };
 559
 560 static const u8 iwlagn_bss_ac_to_fifo[] = {
 561         IWL_TX_FIFO_VO,
 562         IWL_TX_FIFO_VI,
 563         IWL_TX_FIFO_BE,
 564         IWL_TX_FIFO_BK,
 565 };
 566
 567 static const u8 iwlagn_bss_ac_to_queue[] = {
 568         0, 1, 2, 3,
 569 };
 570
 571 static const u8 iwlagn_pan_ac_to_fifo[] = {
 572         IWL_TX_FIFO_VO_IPAN,
 573         IWL_TX_FIFO_VI_IPAN,
 574         IWL_TX_FIFO_BE_IPAN,
 575         IWL_TX_FIFO_BK_IPAN,
 576 };
 577
 578 static const u8 iwlagn_pan_ac_to_queue[] = {
 579         7, 6, 5, 4,
 580 };
 581
 582 static const u8 iwlagn_bss_queue_to_ac[] = {
 583         IEEE80211_AC_VO,
 584         IEEE80211_AC_VI,
 585         IEEE80211_AC_BE,
 586         IEEE80211_AC_BK,
 587 };
 588
 589 static const u8 iwlagn_pan_queue_to_ac[] = {
 590         IEEE80211_AC_VO,
 591         IEEE80211_AC_VI,
 592         IEEE80211_AC_BE,
 593         IEEE80211_AC_BK,
 594         IEEE80211_AC_BK,
 595         IEEE80211_AC_BE,
 596         IEEE80211_AC_VI,
 597         IEEE80211_AC_VO,
 598 };
 599
 600 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 601 {
 602         int i;
 603
 604         /*
 605          * The default context is always valid,
 606          * the PAN context depends on uCode.
 607          */
 608         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 609         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 610                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 611
 612         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 613                 priv->contexts[i].ctxid = i;
 614
 615         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 616         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 617         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 618         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 619         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 620         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 621         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 622         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 623         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 624         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 625                 BIT(NL80211_IFTYPE_ADHOC);
 626         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 627                 BIT(NL80211_IFTYPE_STATION);
 628         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 629         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 630         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 631         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 632         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 633                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 634         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 635                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 636
 637         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 638         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 639                 REPLY_WIPAN_RXON_TIMING;
 640         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 641                 REPLY_WIPAN_RXON_ASSOC;
 642         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 643         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 644         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 645         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 646         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 647         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 648                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 649
 650         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 651                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 652                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 653                         BIT(NL80211_IFTYPE_P2P_GO);
 654
 655         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 656         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 657         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 658         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 659                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 660         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 661                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 662         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 663
 664         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 665 }
 666
 667 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 668 {
 669         struct iwl_ct_kill_config cmd;
 670         struct iwl_ct_kill_throttling_config adv_cmd;
 671         int ret = 0;
 672
 673         iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
 674                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 675
 676         priv->thermal_throttle.ct_kill_toggle = false;
 677
 678         if (cfg(priv)->base_params->support_ct_kill_exit) {
 679                 adv_cmd.critical_temperature_enter =
 680                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 681                 adv_cmd.critical_temperature_exit =
 682                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 683
 684                 ret = iwl_dvm_send_cmd_pdu(priv,
 685                                        REPLY_CT_KILL_CONFIG_CMD,
 686                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 687                 if (ret)
 688                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 689                 else
 690                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 691                                 "succeeded, critical temperature enter is %d,"
 692                                 "exit is %d\n",
 693                                 priv->hw_params.ct_kill_threshold,
 694                                 priv->hw_params.ct_kill_exit_threshold);
 695         } else {
 696                 cmd.critical_temperature_R =
 697                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 698
 699                 ret = iwl_dvm_send_cmd_pdu(priv,
 700                                        REPLY_CT_KILL_CONFIG_CMD,
 701                                        CMD_SYNC, sizeof(cmd), &cmd);
 702                 if (ret)
 703                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 704                 else
 705                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 706                                 "succeeded, "
 707                                 "critical temperature is %d\n",
 708                                 priv->hw_params.ct_kill_threshold);
 709         }
 710 }
 711
 712 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 713 {
 714         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 715         struct iwl_host_cmd cmd = {
 716                 .id = CALIBRATION_CFG_CMD,
 717                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 718                 .data = { &calib_cfg_cmd, },
 719         };
 720
 721         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 722         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 723         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 724
 725         return iwl_dvm_send_cmd(priv, &cmd);
 726 }
 727
 728
 729 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 730 {
 731         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 732           .valid = cpu_to_le32(valid_tx_ant),
 733         };
 734
 735         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 736                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 737                 return iwl_dvm_send_cmd_pdu(priv,
 738                                         TX_ANT_CONFIGURATION_CMD,
 739                                         CMD_SYNC,
 740                                         sizeof(struct iwl_tx_ant_config_cmd),
 741                                         &tx_ant_cmd);
 742         } else {
 743                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 744                 return -EOPNOTSUPP;
 745         }
 746 }
 747
 748 static void iwl_send_bt_config(struct iwl_priv *priv)
 749 {
 750         struct iwl_bt_cmd bt_cmd = {
 751                 .lead_time = BT_LEAD_TIME_DEF,
 752                 .max_kill = BT_MAX_KILL_DEF,
 753                 .kill_ack_mask = 0,
 754                 .kill_cts_mask = 0,
 755         };
 756
 757         if (!iwlagn_mod_params.bt_coex_active)
 758                 bt_cmd.flags = BT_COEX_DISABLE;
 759         else
 760                 bt_cmd.flags = BT_COEX_ENABLE;
 761
 762         priv->bt_enable_flag = bt_cmd.flags;
 763         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 764                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 765
 766         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 767                              CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
 768                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 769 }
 770
 771 /**
 772  * iwl_alive_start - called after REPLY_ALIVE notification received
 773  *                   from protocol/runtime uCode (initialization uCode's
 774  *                   Alive gets handled by iwl_init_alive_start()).
 775  */
 776 int iwl_alive_start(struct iwl_priv *priv)
 777 {
 778         int ret = 0;
 779         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 780
 781         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 782
 783         /* After the ALIVE response, we can send host commands to the uCode */
 784         set_bit(STATUS_ALIVE, &priv->status);
 785
 786         if (iwl_is_rfkill(priv))
 787                 return -ERFKILL;
 788
 789         if (priv->event_log.ucode_trace) {
 790                 /* start collecting data now */
 791                 mod_timer(&priv->ucode_trace, jiffies);
 792         }
 793
 794         /* download priority table before any calibration request */
 795         if (cfg(priv)->bt_params &&
 796             cfg(priv)->bt_params->advanced_bt_coexist) {
 797                 /* Configure Bluetooth device coexistence support */
 798                 if (cfg(priv)->bt_params->bt_sco_disable)
 799                         priv->bt_enable_pspoll = false;
 800                 else
 801                         priv->bt_enable_pspoll = true;
 802
 803                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 804                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 805                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 806                 iwlagn_send_advance_bt_config(priv);
 807                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 808                 priv->cur_rssi_ctx = NULL;
 809
 810                 iwl_send_prio_tbl(priv);
 811
 812                 /* FIXME: w/a to force change uCode BT state machine */
 813                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 814                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 815                 if (ret)
 816                         return ret;
 817                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 818                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 819                 if (ret)
 820                         return ret;
 821         } else {
 822                 /*
 823                  * default is 2-wire BT coexexistence support
 824                  */
 825                 iwl_send_bt_config(priv);
 826         }
 827
 828         /*
 829          * Perform runtime calibrations, including DC calibration.
 830          */
 831         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 832
 833         ieee80211_wake_queues(priv->hw);
 834
 835         /* Configure Tx antenna selection based on H/W config */
 836         iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant);
 837
 838         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 839                 struct iwl_rxon_cmd *active_rxon =
 840                                 (struct iwl_rxon_cmd *)&ctx->active;
 841                 /* apply any changes in staging */
 842                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 843                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 844         } else {
 845                 struct iwl_rxon_context *tmp;
 846                 /* Initialize our rx_config data */
 847                 for_each_context(priv, tmp)
 848                         iwl_connection_init_rx_config(priv, tmp);
 849
 850                 iwlagn_set_rxon_chain(priv, ctx);
 851         }
 852
 853         if (!priv->wowlan) {
 854                 /* WoWLAN ucode will not reply in the same way, skip it */
 855                 iwl_reset_run_time_calib(priv);
 856         }
 857
 858         set_bit(STATUS_READY, &priv->status);
 859
 860         /* Configure the adapter for unassociated operation */
 861         ret = iwlagn_commit_rxon(priv, ctx);
 862         if (ret)
 863                 return ret;
 864
 865         /* At this point, the NIC is initialized and operational */
 866         iwl_rf_kill_ct_config(priv);
 867
 868         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 869
 870         return iwl_power_update_mode(priv, true);
 871 }
 872
 873 /**
 874  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 875  * @priv: iwl priv struct
 876  *
 877  * This is called during iwl_down() to make sure that in the case
 878  * we're coming there from a hardware restart mac80211 will be
 879  * able to reconfigure stations -- if we're getting there in the
 880  * normal down flow then the stations will already be cleared.
 881  */
 882 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 883 {
 884         struct iwl_rxon_context *ctx;
 885
 886         spin_lock_bh(&priv->sta_lock);
 887         memset(priv->stations, 0, sizeof(priv->stations));
 888         priv->num_stations = 0;
 889
 890         priv->ucode_key_table = 0;
 891
 892         for_each_context(priv, ctx) {
 893                 /*
 894                  * Remove all key information that is not stored as part
 895                  * of station information since mac80211 may not have had
 896                  * a chance to remove all the keys. When device is
 897                  * reconfigured by mac80211 after an error all keys will
 898                  * be reconfigured.
 899                  */
 900                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 901                 ctx->key_mapping_keys = 0;
 902         }
 903
 904         spin_unlock_bh(&priv->sta_lock);
 905 }
 906
 907 void iwl_down(struct iwl_priv *priv)
 908 {
 909         int exit_pending;
 910
 911         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 912
 913         lockdep_assert_held(&priv->mutex);
 914
 915         iwl_scan_cancel_timeout(priv, 200);
 916
 917         /*
 918          * If active, scanning won't cancel it, so say it expired.
 919          * No race since we hold the mutex here and a new one
 920          * can't come in at this time.
 921          */
 922         ieee80211_remain_on_channel_expired(priv->hw);
 923
 924         exit_pending =
 925                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 926
 927         iwl_clear_ucode_stations(priv, NULL);
 928         iwl_dealloc_bcast_stations(priv);
 929         iwl_clear_driver_stations(priv);
 930
 931         /* reset BT coex data */
 932         priv->bt_status = 0;
 933         priv->cur_rssi_ctx = NULL;
 934         priv->bt_is_sco = 0;
 935         if (cfg(priv)->bt_params)
 936                 priv->bt_traffic_load =
 937                          cfg(priv)->bt_params->bt_init_traffic_load;
 938         else
 939                 priv->bt_traffic_load = 0;
 940         priv->bt_full_concurrent = false;
 941         priv->bt_ci_compliance = 0;
 942
 943         /* Wipe out the EXIT_PENDING status bit if we are not actually
 944          * exiting the module */
 945         if (!exit_pending)
 946                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 947
 948         if (priv->mac80211_registered)
 949                 ieee80211_stop_queues(priv->hw);
 950
 951         priv->ucode_loaded = false;
 952         iwl_trans_stop_device(trans(priv));
 953
 954         /* Clear out all status bits but a few that are stable across reset */
 955         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 956                                 STATUS_RF_KILL_HW |
 957                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
 958                                 STATUS_GEO_CONFIGURED |
 959                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 960                                 STATUS_FW_ERROR |
 961                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 962                                 STATUS_EXIT_PENDING;
 963
 964         dev_kfree_skb(priv->beacon_skb);
 965         priv->beacon_skb = NULL;
 966 }
 967
 968 /*****************************************************************************
 969  *
 970  * Workqueue callbacks
 971  *
 972  *****************************************************************************/
 973
 974 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 975 {
 976         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 977                         run_time_calib_work);
 978
 979         mutex_lock(&priv->mutex);
 980
 981         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 982             test_bit(STATUS_SCANNING, &priv->status)) {
 983                 mutex_unlock(&priv->mutex);
 984                 return;
 985         }
 986
 987         if (priv->start_calib) {
 988                 iwl_chain_noise_calibration(priv);
 989                 iwl_sensitivity_calibration(priv);
 990         }
 991
 992         mutex_unlock(&priv->mutex);
 993 }
 994
 995 void iwlagn_prepare_restart(struct iwl_priv *priv)
 996 {
 997         struct iwl_rxon_context *ctx;
 998         bool bt_full_concurrent;
 999         u8 bt_ci_compliance;
1000         u8 bt_load;
1001         u8 bt_status;
1002         bool bt_is_sco;
1003         int i;
1004
1005         lockdep_assert_held(&priv->mutex);
1006
1007         for_each_context(priv, ctx)
1008                 ctx->vif = NULL;
1009         priv->is_open = 0;
1010
1011         /*
1012          * __iwl_down() will clear the BT status variables,
1013          * which is correct, but when we restart we really
1014          * want to keep them so restore them afterwards.
1015          *
1016          * The restart process will later pick them up and
1017          * re-configure the hw when we reconfigure the BT
1018          * command.
1019          */
1020         bt_full_concurrent = priv->bt_full_concurrent;
1021         bt_ci_compliance = priv->bt_ci_compliance;
1022         bt_load = priv->bt_traffic_load;
1023         bt_status = priv->bt_status;
1024         bt_is_sco = priv->bt_is_sco;
1025
1026         iwl_down(priv);
1027
1028         priv->bt_full_concurrent = bt_full_concurrent;
1029         priv->bt_ci_compliance = bt_ci_compliance;
1030         priv->bt_traffic_load = bt_load;
1031         priv->bt_status = bt_status;
1032         priv->bt_is_sco = bt_is_sco;
1033
1034         /* reset all queues */
1035         for (i = 0; i < IEEE80211_NUM_ACS; i++)
1036                 atomic_set(&priv->ac_stop_count[i], 0);
1037
1038         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1039                 priv->queue_to_ac[i] = IWL_INVALID_AC;
1040
1041         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1042 }
1043
1044 static void iwl_bg_restart(struct work_struct *data)
1045 {
1046         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1047
1048         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1049                 return;
1050
1051         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1052                 mutex_lock(&priv->mutex);
1053                 iwlagn_prepare_restart(priv);
1054                 mutex_unlock(&priv->mutex);
1055                 iwl_cancel_deferred_work(priv);
1056                 ieee80211_restart_hw(priv->hw);
1057         } else {
1058                 WARN_ON(1);
1059         }
1060 }
1061
1062
1063
1064
1065 void iwlagn_disable_roc(struct iwl_priv *priv)
1066 {
1067         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1068
1069         lockdep_assert_held(&priv->mutex);
1070
1071         if (!priv->hw_roc_setup)
1072                 return;
1073
1074         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1075         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1076
1077         priv->hw_roc_channel = NULL;
1078
1079         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1080
1081         iwlagn_commit_rxon(priv, ctx);
1082
1083         ctx->is_active = false;
1084         priv->hw_roc_setup = false;
1085 }
1086
1087 static void iwlagn_disable_roc_work(struct work_struct *work)
1088 {
1089         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1090                                              hw_roc_disable_work.work);
1091
1092         mutex_lock(&priv->mutex);
1093         iwlagn_disable_roc(priv);
1094         mutex_unlock(&priv->mutex);
1095 }
1096
1097 /*****************************************************************************
1098  *
1099  * driver setup and teardown
1100  *
1101  *****************************************************************************/
1102
1103 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1104 {
1105         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1106
1107         INIT_WORK(&priv->restart, iwl_bg_restart);
1108         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1109         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1110         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1111         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1112         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1113         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1114                           iwlagn_disable_roc_work);
1115
1116         iwl_setup_scan_deferred_work(priv);
1117
1118         if (cfg(priv)->bt_params)
1119                 iwlagn_bt_setup_deferred_work(priv);
1120
1121         init_timer(&priv->statistics_periodic);
1122         priv->statistics_periodic.data = (unsigned long)priv;
1123         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1124
1125         init_timer(&priv->ucode_trace);
1126         priv->ucode_trace.data = (unsigned long)priv;
1127         priv->ucode_trace.function = iwl_bg_ucode_trace;
1128 }
1129
1130 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1131 {
1132         if (cfg(priv)->bt_params)
1133                 iwlagn_bt_cancel_deferred_work(priv);
1134
1135         cancel_work_sync(&priv->run_time_calib_work);
1136         cancel_work_sync(&priv->beacon_update);
1137
1138         iwl_cancel_scan_deferred_work(priv);
1139
1140         cancel_work_sync(&priv->bt_full_concurrency);
1141         cancel_work_sync(&priv->bt_runtime_config);
1142         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1143
1144         del_timer_sync(&priv->statistics_periodic);
1145         del_timer_sync(&priv->ucode_trace);
1146 }
1147
1148 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1149 {
1150         int i;
1151
1152         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1153                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1154                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1155                 rates[i].hw_value_short = i;
1156                 rates[i].flags = 0;
1157                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1158                         /*
1159                          * If CCK != 1M then set short preamble rate flag.
1160                          */
1161                         rates[i].flags |=
1162                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1163                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1164                 }
1165         }
1166 }
1167
1168 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1169 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1170 static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1171                               struct ieee80211_sta_ht_cap *ht_info,
1172                               enum ieee80211_band band)
1173 {
1174         u16 max_bit_rate = 0;
1175         u8 rx_chains_num = priv->hw_params.rx_chains_num;
1176         u8 tx_chains_num = priv->hw_params.tx_chains_num;
1177
1178         ht_info->cap = 0;
1179         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1180
1181         ht_info->ht_supported = true;
1182
1183         if (cfg(priv)->ht_params &&
1184             cfg(priv)->ht_params->ht_greenfield_support)
1185                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1186         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1187         max_bit_rate = MAX_BIT_RATE_20_MHZ;
1188         if (priv->hw_params.ht40_channel & BIT(band)) {
1189                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1190                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1191                 ht_info->mcs.rx_mask[4] = 0x01;
1192                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1193         }
1194
1195         if (iwlagn_mod_params.amsdu_size_8K)
1196                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1197
1198         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1199         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1200
1201         ht_info->mcs.rx_mask[0] = 0xFF;
1202         if (rx_chains_num >= 2)
1203                 ht_info->mcs.rx_mask[1] = 0xFF;
1204         if (rx_chains_num >= 3)
1205                 ht_info->mcs.rx_mask[2] = 0xFF;
1206
1207         /* Highest supported Rx data rate */
1208         max_bit_rate *= rx_chains_num;
1209         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1210         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1211
1212         /* Tx MCS capabilities */
1213         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1214         if (tx_chains_num != rx_chains_num) {
1215                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1216                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1217                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1218         }
1219 }
1220
1221 /**
1222  * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1223  */
1224 static int iwl_init_geos(struct iwl_priv *priv)
1225 {
1226         struct iwl_channel_info *ch;
1227         struct ieee80211_supported_band *sband;
1228         struct ieee80211_channel *channels;
1229         struct ieee80211_channel *geo_ch;
1230         struct ieee80211_rate *rates;
1231         int i = 0;
1232         s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1233
1234         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1235             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1236                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1237                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1238                 return 0;
1239         }
1240
1241         channels = kcalloc(priv->channel_count,
1242                            sizeof(struct ieee80211_channel), GFP_KERNEL);
1243         if (!channels)
1244                 return -ENOMEM;
1245
1246         rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1247                         GFP_KERNEL);
1248         if (!rates) {
1249                 kfree(channels);
1250                 return -ENOMEM;
1251         }
1252
1253         /* 5.2GHz channels start after the 2.4GHz channels */
1254         sband = &priv->bands[IEEE80211_BAND_5GHZ];
1255         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1256         /* just OFDM */
1257         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1258         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1259
1260         if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1261                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1262                                          IEEE80211_BAND_5GHZ);
1263
1264         sband = &priv->bands[IEEE80211_BAND_2GHZ];
1265         sband->channels = channels;
1266         /* OFDM & CCK */
1267         sband->bitrates = rates;
1268         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1269
1270         if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1271                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1272                                          IEEE80211_BAND_2GHZ);
1273
1274         priv->ieee_channels = channels;
1275         priv->ieee_rates = rates;
1276
1277         for (i = 0;  i < priv->channel_count; i++) {
1278                 ch = &priv->channel_info[i];
1279
1280                 /* FIXME: might be removed if scan is OK */
1281                 if (!is_channel_valid(ch))
1282                         continue;
1283
1284                 sband =  &priv->bands[ch->band];
1285
1286                 geo_ch = &sband->channels[sband->n_channels++];
1287
1288                 geo_ch->center_freq =
1289                         ieee80211_channel_to_frequency(ch->channel, ch->band);
1290                 geo_ch->max_power = ch->max_power_avg;
1291                 geo_ch->max_antenna_gain = 0xff;
1292                 geo_ch->hw_value = ch->channel;
1293
1294                 if (is_channel_valid(ch)) {
1295                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1296                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1297
1298                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1299                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1300
1301                         if (ch->flags & EEPROM_CHANNEL_RADAR)
1302                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1303
1304                         geo_ch->flags |= ch->ht40_extension_channel;
1305
1306                         if (ch->max_power_avg > max_tx_power)
1307                                 max_tx_power = ch->max_power_avg;
1308                 } else {
1309                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1310                 }
1311
1312                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1313                                 ch->channel, geo_ch->center_freq,
1314                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
1315                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1316                                 "restricted" : "valid",
1317                                  geo_ch->flags);
1318         }
1319
1320         priv->tx_power_device_lmt = max_tx_power;
1321         priv->tx_power_user_lmt = max_tx_power;
1322         priv->tx_power_next = max_tx_power;
1323
1324         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
1325              priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) {
1326                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1327                         "Please send your %s to maintainer.\n",
1328                         trans(priv)->hw_id_str);
1329                 priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
1330         }
1331
1332         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1333                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1334                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1335
1336         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1337
1338         return 0;
1339 }
1340
1341 /*
1342  * iwl_free_geos - undo allocations in iwl_init_geos
1343  */
1344 static void iwl_free_geos(struct iwl_priv *priv)
1345 {
1346         kfree(priv->ieee_channels);
1347         kfree(priv->ieee_rates);
1348         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1349 }
1350
1351 static int iwl_init_drv(struct iwl_priv *priv)
1352 {
1353         int ret;
1354
1355         spin_lock_init(&priv->sta_lock);
1356
1357         mutex_init(&priv->mutex);
1358
1359         INIT_LIST_HEAD(&priv->calib_results);
1360
1361         priv->ieee_channels = NULL;
1362         priv->ieee_rates = NULL;
1363         priv->band = IEEE80211_BAND_2GHZ;
1364
1365         priv->plcp_delta_threshold =
1366                 cfg(priv)->base_params->plcp_delta_threshold;
1367
1368         priv->iw_mode = NL80211_IFTYPE_STATION;
1369         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1370         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1371         priv->agg_tids_count = 0;
1372
1373         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1374
1375         priv->rx_statistics_jiffies = jiffies;
1376
1377         /* Choose which receivers/antennas to use */
1378         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1379
1380         iwl_init_scan_params(priv);
1381
1382         /* init bt coex */
1383         if (cfg(priv)->bt_params &&
1384             cfg(priv)->bt_params->advanced_bt_coexist) {
1385                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1386                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1387                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1388                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1389                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1390                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1391         }
1392
1393         ret = iwl_init_channel_map(priv);
1394         if (ret) {
1395                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1396                 goto err;
1397         }
1398
1399         ret = iwl_init_geos(priv);
1400         if (ret) {
1401                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1402                 goto err_free_channel_map;
1403         }
1404         iwl_init_hw_rates(priv->ieee_rates);
1405
1406         return 0;
1407
1408 err_free_channel_map:
1409         iwl_free_channel_map(priv);
1410 err:
1411         return ret;
1412 }
1413
1414 static void iwl_uninit_drv(struct iwl_priv *priv)
1415 {
1416         iwl_free_geos(priv);
1417         iwl_free_channel_map(priv);
1418         kfree(priv->scan_cmd);
1419         kfree(priv->beacon_cmd);
1420         kfree(rcu_dereference_raw(priv->noa_data));
1421         iwl_calib_free_results(priv);
1422 #ifdef CONFIG_IWLWIFI_DEBUGFS
1423         kfree(priv->wowlan_sram);
1424 #endif
1425 }
1426
1427 static void iwl_set_hw_params(struct iwl_priv *priv)
1428 {
1429         if (cfg(priv)->ht_params)
1430                 priv->hw_params.use_rts_for_aggregation =
1431                         cfg(priv)->ht_params->use_rts_for_aggregation;
1432
1433         if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1434                 priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1435
1436         /* Device-specific setup */
1437         priv->lib->set_hw_params(priv);
1438 }
1439
1440
1441
1442 static void iwl_debug_config(struct iwl_priv *priv)
1443 {
1444         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1445 #ifdef CONFIG_IWLWIFI_DEBUG
1446                 "enabled\n");
1447 #else
1448                 "disabled\n");
1449 #endif
1450         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1451 #ifdef CONFIG_IWLWIFI_DEBUGFS
1452                 "enabled\n");
1453 #else
1454                 "disabled\n");
1455 #endif
1456         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1457 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1458                 "enabled\n");
1459 #else
1460                 "disabled\n");
1461 #endif
1462
1463         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1464 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1465                 "enabled\n");
1466 #else
1467                 "disabled\n");
1468 #endif
1469         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1470 #ifdef CONFIG_IWLWIFI_P2P
1471                 "enabled\n");
1472 #else
1473                 "disabled\n");
1474 #endif
1475 }
1476
1477 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1478                                                  const struct iwl_fw *fw)
1479 {
1480         struct iwl_priv *priv;
1481         struct ieee80211_hw *hw;
1482         struct iwl_op_mode *op_mode;
1483         u16 num_mac;
1484         u32 ucode_flags;
1485         struct iwl_trans_config trans_cfg;
1486         static const u8 no_reclaim_cmds[] = {
1487                 REPLY_RX_PHY_CMD,
1488                 REPLY_RX,
1489                 REPLY_RX_MPDU_CMD,
1490                 REPLY_COMPRESSED_BA,
1491                 STATISTICS_NOTIFICATION,
1492                 REPLY_TX,
1493         };
1494         const u8 *q_to_ac;
1495         int n_q_to_ac;
1496         int i;
1497
1498         /************************
1499          * 1. Allocating HW data
1500          ************************/
1501         hw = iwl_alloc_all();
1502         if (!hw) {
1503                 pr_err("%s: Cannot allocate network device\n",
1504                                 cfg(trans)->name);
1505                 goto out;
1506         }
1507
1508         op_mode = hw->priv;
1509         op_mode->ops = &iwl_dvm_ops;
1510         priv = IWL_OP_MODE_GET_DVM(op_mode);
1511         priv->shrd = trans->shrd;
1512         priv->fw = fw;
1513
1514         switch (cfg(priv)->device_family) {
1515         case IWL_DEVICE_FAMILY_1000:
1516         case IWL_DEVICE_FAMILY_100:
1517                 priv->lib = &iwl1000_lib;
1518                 break;
1519         case IWL_DEVICE_FAMILY_2000:
1520         case IWL_DEVICE_FAMILY_105:
1521                 priv->lib = &iwl2000_lib;
1522                 break;
1523         case IWL_DEVICE_FAMILY_2030:
1524         case IWL_DEVICE_FAMILY_135:
1525                 priv->lib = &iwl2030_lib;
1526                 break;
1527         case IWL_DEVICE_FAMILY_5000:
1528                 priv->lib = &iwl5000_lib;
1529                 break;
1530         case IWL_DEVICE_FAMILY_5150:
1531                 priv->lib = &iwl5150_lib;
1532                 break;
1533         case IWL_DEVICE_FAMILY_6000:
1534         case IWL_DEVICE_FAMILY_6005:
1535         case IWL_DEVICE_FAMILY_6000i:
1536         case IWL_DEVICE_FAMILY_6050:
1537         case IWL_DEVICE_FAMILY_6150:
1538                 priv->lib = &iwl6000_lib;
1539                 break;
1540         case IWL_DEVICE_FAMILY_6030:
1541                 priv->lib = &iwl6030_lib;
1542                 break;
1543         default:
1544                 break;
1545         }
1546
1547         if (WARN_ON(!priv->lib))
1548                 goto out_free_traffic_mem;
1549
1550         /*
1551          * Populate the state variables that the transport layer needs
1552          * to know about.
1553          */
1554         trans_cfg.op_mode = op_mode;
1555         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1556         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1557         trans_cfg.rx_buf_size_8k = iwlagn_mod_params.amsdu_size_8K;
1558         if (!iwlagn_mod_params.wd_disable)
1559                 trans_cfg.queue_watchdog_timeout =
1560                         cfg(priv)->base_params->wd_timeout;
1561         else
1562                 trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED;
1563
1564         ucode_flags = fw->ucode_capa.flags;
1565
1566 #ifndef CONFIG_IWLWIFI_P2P
1567         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1568 #endif
1569
1570         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1571                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1572                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1573                 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1574                 trans_cfg.n_queue_to_fifo =
1575                         ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1576                 q_to_ac = iwlagn_pan_queue_to_ac;
1577                 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
1578         } else {
1579                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1580                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1581                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1582                 trans_cfg.n_queue_to_fifo =
1583                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1584                 q_to_ac = iwlagn_bss_queue_to_ac;
1585                 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1586         }
1587
1588         /* Configure transport layer */
1589         iwl_trans_configure(trans(priv), &trans_cfg);
1590
1591         /* At this point both hw and priv are allocated. */
1592
1593         SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1594
1595         /* show what debugging capabilities we have */
1596         iwl_debug_config(priv);
1597
1598         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1599
1600         /* is antenna coupling more than 35dB ? */
1601         priv->bt_ant_couple_ok =
1602                 (iwlagn_mod_params.ant_coupling >
1603                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1604                         true : false;
1605
1606         /* enable/disable bt channel inhibition */
1607         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1608         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1609                        (priv->bt_ch_announce) ? "On" : "Off");
1610
1611         if (iwl_alloc_traffic_mem(priv))
1612                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1613
1614         /* these spin locks will be used in apm_ops.init and EEPROM access
1615          * we should init now
1616          */
1617         spin_lock_init(&trans(priv)->reg_lock);
1618         spin_lock_init(&priv->statistics.lock);
1619
1620         /***********************
1621          * 2. Read REV register
1622          ***********************/
1623         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1624                 cfg(priv)->name, trans(priv)->hw_rev);
1625
1626         if (iwl_trans_start_hw(trans(priv)))
1627                 goto out_free_traffic_mem;
1628
1629         /* Read the EEPROM */
1630         if (iwl_eeprom_init(priv, trans(priv)->hw_rev)) {
1631                 IWL_ERR(priv, "Unable to init EEPROM\n");
1632                 goto out_free_traffic_mem;
1633         }
1634         /* Reset chip to save power until we load uCode during "up". */
1635         iwl_trans_stop_hw(trans(priv));
1636
1637         if (iwl_eeprom_check_version(priv))
1638                 goto out_free_eeprom;
1639
1640         if (iwl_eeprom_init_hw_params(priv))
1641                 goto out_free_eeprom;
1642
1643         /* extract MAC Address */
1644         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
1645         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1646         priv->hw->wiphy->addresses = priv->addresses;
1647         priv->hw->wiphy->n_addresses = 1;
1648         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
1649         if (num_mac > 1) {
1650                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1651                        ETH_ALEN);
1652                 priv->addresses[1].addr[5]++;
1653                 priv->hw->wiphy->n_addresses++;
1654         }
1655
1656         /************************
1657          * 4. Setup HW constants
1658          ************************/
1659         iwl_set_hw_params(priv);
1660
1661         if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1662                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1663                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1664                 /*
1665                  * if not PAN, then don't support P2P -- might be a uCode
1666                  * packaging bug or due to the eeprom check above
1667                  */
1668                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1669                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1670                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1671                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1672                 trans_cfg.n_queue_to_fifo =
1673                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1674                 q_to_ac = iwlagn_bss_queue_to_ac;
1675                 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1676
1677                 /* Configure transport layer again*/
1678                 iwl_trans_configure(trans(priv), &trans_cfg);
1679         }
1680
1681         /*******************
1682          * 5. Setup priv
1683          *******************/
1684         for (i = 0; i < IEEE80211_NUM_ACS; i++)
1685                 atomic_set(&priv->ac_stop_count[i], 0);
1686
1687         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1688                 if (i < n_q_to_ac)
1689                         priv->queue_to_ac[i] = q_to_ac[i];
1690                 else
1691                         priv->queue_to_ac[i] = IWL_INVALID_AC;
1692         }
1693
1694         WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1695                                                 IWLAGN_CMD_FIFO_NUM);
1696
1697         if (iwl_init_drv(priv))
1698                 goto out_free_eeprom;
1699
1700         /* At this point both hw and priv are initialized. */
1701
1702         /********************
1703          * 6. Setup services
1704          ********************/
1705         iwl_setup_deferred_work(priv);
1706         iwl_setup_rx_handlers(priv);
1707         iwl_testmode_init(priv);
1708
1709         iwl_power_initialize(priv);
1710         iwl_tt_initialize(priv);
1711
1712         snprintf(priv->hw->wiphy->fw_version,
1713                  sizeof(priv->hw->wiphy->fw_version),
1714                  "%s", fw->fw_version);
1715
1716         priv->new_scan_threshold_behaviour =
1717                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1718
1719         priv->phy_calib_chain_noise_reset_cmd =
1720                 fw->ucode_capa.standard_phy_calibration_size;
1721         priv->phy_calib_chain_noise_gain_cmd =
1722                 fw->ucode_capa.standard_phy_calibration_size + 1;
1723
1724         /* initialize all valid contexts */
1725         iwl_init_context(priv, ucode_flags);
1726
1727         /**************************************************
1728          * This is still part of probe() in a sense...
1729          *
1730          * 7. Setup and register with mac80211 and debugfs
1731          **************************************************/
1732         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1733                 goto out_destroy_workqueue;
1734
1735         if (iwl_dbgfs_register(priv, DRV_NAME))
1736                 IWL_ERR(priv,
1737                         "failed to create debugfs files. Ignoring error\n");
1738
1739         return op_mode;
1740
1741 out_destroy_workqueue:
1742         destroy_workqueue(priv->workqueue);
1743         priv->workqueue = NULL;
1744         iwl_uninit_drv(priv);
1745 out_free_eeprom:
1746         iwl_eeprom_free(priv);
1747 out_free_traffic_mem:
1748         iwl_free_traffic_mem(priv);
1749         ieee80211_free_hw(priv->hw);
1750 out:
1751         op_mode = NULL;
1752         return op_mode;
1753 }
1754
1755 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1756 {
1757         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1758
1759         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1760
1761         iwl_dbgfs_unregister(priv);
1762
1763         iwl_testmode_cleanup(priv);
1764         iwlagn_mac_unregister(priv);
1765
1766         iwl_tt_exit(priv);
1767
1768         /*This will stop the queues, move the device to low power state */
1769         priv->ucode_loaded = false;
1770         iwl_trans_stop_device(trans(priv));
1771
1772         iwl_eeprom_free(priv);
1773
1774         /*netif_stop_queue(dev); */
1775         flush_workqueue(priv->workqueue);
1776
1777         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1778          * priv->workqueue... so we can't take down the workqueue
1779          * until now... */
1780         destroy_workqueue(priv->workqueue);
1781         priv->workqueue = NULL;
1782         iwl_free_traffic_mem(priv);
1783
1784         iwl_uninit_drv(priv);
1785
1786         dev_kfree_skb(priv->beacon_skb);
1787
1788         ieee80211_free_hw(priv->hw);
1789 }
1790
1791 static const char * const desc_lookup_text[] = {
1792         "OK",
1793         "FAIL",
1794         "BAD_PARAM",
1795         "BAD_CHECKSUM",
1796         "NMI_INTERRUPT_WDG",
1797         "SYSASSERT",
1798         "FATAL_ERROR",
1799         "BAD_COMMAND",
1800         "HW_ERROR_TUNE_LOCK",
1801         "HW_ERROR_TEMPERATURE",
1802         "ILLEGAL_CHAN_FREQ",
1803         "VCC_NOT_STABLE",
1804         "FH_ERROR",
1805         "NMI_INTERRUPT_HOST",
1806         "NMI_INTERRUPT_ACTION_PT",
1807         "NMI_INTERRUPT_UNKNOWN",
1808         "UCODE_VERSION_MISMATCH",
1809         "HW_ERROR_ABS_LOCK",
1810         "HW_ERROR_CAL_LOCK_FAIL",
1811         "NMI_INTERRUPT_INST_ACTION_PT",
1812         "NMI_INTERRUPT_DATA_ACTION_PT",
1813         "NMI_TRM_HW_ER",
1814         "NMI_INTERRUPT_TRM",
1815         "NMI_INTERRUPT_BREAK_POINT",
1816         "DEBUG_0",
1817         "DEBUG_1",
1818         "DEBUG_2",
1819         "DEBUG_3",
1820 };
1821
1822 static struct { char *name; u8 num; } advanced_lookup[] = {
1823         { "NMI_INTERRUPT_WDG", 0x34 },
1824         { "SYSASSERT", 0x35 },
1825         { "UCODE_VERSION_MISMATCH", 0x37 },
1826         { "BAD_COMMAND", 0x38 },
1827         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1828         { "FATAL_ERROR", 0x3D },
1829         { "NMI_TRM_HW_ERR", 0x46 },
1830         { "NMI_INTERRUPT_TRM", 0x4C },
1831         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1832         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1833         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1834         { "NMI_INTERRUPT_HOST", 0x66 },
1835         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1836         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1837         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1838         { "ADVANCED_SYSASSERT", 0 },
1839 };
1840
1841 static const char *desc_lookup(u32 num)
1842 {
1843         int i;
1844         int max = ARRAY_SIZE(desc_lookup_text);
1845
1846         if (num < max)
1847                 return desc_lookup_text[num];
1848
1849         max = ARRAY_SIZE(advanced_lookup) - 1;
1850         for (i = 0; i < max; i++) {
1851                 if (advanced_lookup[i].num == num)
1852                         break;
1853         }
1854         return advanced_lookup[i].name;
1855 }
1856
1857 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1858 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1859
1860 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1861 {
1862         struct iwl_trans *trans = trans(priv);
1863         u32 base;
1864         struct iwl_error_event_table table;
1865
1866         base = priv->device_pointers.error_event_table;
1867         if (priv->cur_ucode == IWL_UCODE_INIT) {
1868                 if (!base)
1869                         base = priv->fw->init_errlog_ptr;
1870         } else {
1871                 if (!base)
1872                         base = priv->fw->inst_errlog_ptr;
1873         }
1874
1875         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1876                 IWL_ERR(priv,
1877                         "Not valid error log pointer 0x%08X for %s uCode\n",
1878                         base,
1879                         (priv->cur_ucode == IWL_UCODE_INIT)
1880                                         ? "Init" : "RT");
1881                 return;
1882         }
1883
1884         /*TODO: Update dbgfs with ISR error stats obtained below */
1885         iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1886
1887         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1888                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1889                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1890                         priv->shrd->status, table.valid);
1891         }
1892
1893         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1894                                       table.data1, table.data2, table.line,
1895                                       table.blink1, table.blink2, table.ilink1,
1896                                       table.ilink2, table.bcon_time, table.gp1,
1897                                       table.gp2, table.gp3, table.ucode_ver,
1898                                       table.hw_ver, table.brd_ver);
1899         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1900                 desc_lookup(table.error_id));
1901         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1902         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1903         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1904         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1905         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1906         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1907         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1908         IWL_ERR(priv, "0x%08X | line\n", table.line);
1909         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1910         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1911         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1912         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1913         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1914         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1915         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1916         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1917         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1918         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1919         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1920         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1921         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1922         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1923         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1924         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1925         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1926         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1927         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1928         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1929         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1930         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1931         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1932         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1933 }
1934
1935 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1936
1937 /**
1938  * iwl_print_event_log - Dump error event log to syslog
1939  *
1940  */
1941 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1942                                u32 num_events, u32 mode,
1943                                int pos, char **buf, size_t bufsz)
1944 {
1945         u32 i;
1946         u32 base;       /* SRAM byte address of event log header */
1947         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1948         u32 ptr;        /* SRAM byte address of log data */
1949         u32 ev, time, data; /* event log data */
1950         unsigned long reg_flags;
1951
1952         struct iwl_trans *trans = trans(priv);
1953
1954         if (num_events == 0)
1955                 return pos;
1956
1957         base = priv->device_pointers.log_event_table;
1958         if (priv->cur_ucode == IWL_UCODE_INIT) {
1959                 if (!base)
1960                         base = priv->fw->init_evtlog_ptr;
1961         } else {
1962                 if (!base)
1963                         base = priv->fw->inst_evtlog_ptr;
1964         }
1965
1966         if (mode == 0)
1967                 event_size = 2 * sizeof(u32);
1968         else
1969                 event_size = 3 * sizeof(u32);
1970
1971         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1972
1973         /* Make sure device is powered up for SRAM reads */
1974         spin_lock_irqsave(&trans->reg_lock, reg_flags);
1975         if (unlikely(!iwl_grab_nic_access(trans)))
1976                 goto out_unlock;
1977
1978         /* Set starting address; reads will auto-increment */
1979         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1980
1981         /* "time" is actually "data" for mode 0 (no timestamp).
1982         * place event id # at far right for easier visual parsing. */
1983         for (i = 0; i < num_events; i++) {
1984                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1985                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1986                 if (mode == 0) {
1987                         /* data, ev */
1988                         if (bufsz) {
1989                                 pos += scnprintf(*buf + pos, bufsz - pos,
1990                                                 "EVT_LOG:0x%08x:%04u\n",
1991                                                 time, ev);
1992                         } else {
1993                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1994                                         time, ev);
1995                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1996                                         time, ev);
1997                         }
1998                 } else {
1999                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
2000                         if (bufsz) {
2001                                 pos += scnprintf(*buf + pos, bufsz - pos,
2002                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
2003                                                  time, data, ev);
2004                         } else {
2005                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
2006                                         time, data, ev);
2007                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
2008                                         data, ev);
2009                         }
2010                 }
2011         }
2012
2013         /* Allow device to power down */
2014         iwl_release_nic_access(trans);
2015 out_unlock:
2016         spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
2017         return pos;
2018 }
2019
2020 /**
2021  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
2022  */
2023 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
2024                                     u32 num_wraps, u32 next_entry,
2025                                     u32 size, u32 mode,
2026                                     int pos, char **buf, size_t bufsz)
2027 {
2028         /*
2029          * display the newest DEFAULT_LOG_ENTRIES entries
2030          * i.e the entries just before the next ont that uCode would fill.
2031          */
2032         if (num_wraps) {
2033                 if (next_entry < size) {
2034                         pos = iwl_print_event_log(priv,
2035                                                 capacity - (size - next_entry),
2036                                                 size - next_entry, mode,
2037                                                 pos, buf, bufsz);
2038                         pos = iwl_print_event_log(priv, 0,
2039                                                   next_entry, mode,
2040                                                   pos, buf, bufsz);
2041                 } else
2042                         pos = iwl_print_event_log(priv, next_entry - size,
2043                                                   size, mode, pos, buf, bufsz);
2044         } else {
2045                 if (next_entry < size) {
2046                         pos = iwl_print_event_log(priv, 0, next_entry,
2047                                                   mode, pos, buf, bufsz);
2048                 } else {
2049                         pos = iwl_print_event_log(priv, next_entry - size,
2050                                                   size, mode, pos, buf, bufsz);
2051                 }
2052         }
2053         return pos;
2054 }
2055
2056 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2057
2058 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2059                             char **buf, bool display)
2060 {
2061         u32 base;       /* SRAM byte address of event log header */
2062         u32 capacity;   /* event log capacity in # entries */
2063         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2064         u32 num_wraps;  /* # times uCode wrapped to top of log */
2065         u32 next_entry; /* index of next entry to be written by uCode */
2066         u32 size;       /* # entries that we'll print */
2067         u32 logsize;
2068         int pos = 0;
2069         size_t bufsz = 0;
2070         struct iwl_trans *trans = trans(priv);
2071
2072         base = priv->device_pointers.log_event_table;
2073         if (priv->cur_ucode == IWL_UCODE_INIT) {
2074                 logsize = priv->fw->init_evtlog_size;
2075                 if (!base)
2076                         base = priv->fw->init_evtlog_ptr;
2077         } else {
2078                 logsize = priv->fw->inst_evtlog_size;
2079                 if (!base)
2080                         base = priv->fw->inst_evtlog_ptr;
2081         }
2082
2083         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2084                 IWL_ERR(priv,
2085                         "Invalid event log pointer 0x%08X for %s uCode\n",
2086                         base,
2087                         (priv->cur_ucode == IWL_UCODE_INIT)
2088                                         ? "Init" : "RT");
2089                 return -EINVAL;
2090         }
2091
2092         /* event log header */
2093         capacity = iwl_read_targ_mem(trans, base);
2094         mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2095         num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2096         next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2097
2098         if (capacity > logsize) {
2099                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2100                         "entries\n", capacity, logsize);
2101                 capacity = logsize;
2102         }
2103
2104         if (next_entry > logsize) {
2105                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2106                         next_entry, logsize);
2107                 next_entry = logsize;
2108         }
2109
2110         size = num_wraps ? capacity : next_entry;
2111
2112         /* bail out if nothing in log */
2113         if (size == 0) {
2114                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2115                 return pos;
2116         }
2117
2118 #ifdef CONFIG_IWLWIFI_DEBUG
2119         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2120                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2121                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2122 #else
2123         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2124                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2125 #endif
2126         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2127                 size);
2128
2129 #ifdef CONFIG_IWLWIFI_DEBUG
2130         if (display) {
2131                 if (full_log)
2132                         bufsz = capacity * 48;
2133                 else
2134                         bufsz = size * 48;
2135                 *buf = kmalloc(bufsz, GFP_KERNEL);
2136                 if (!*buf)
2137                         return -ENOMEM;
2138         }
2139         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2140                 /*
2141                  * if uCode has wrapped back to top of log,
2142                  * start at the oldest entry,
2143                  * i.e the next one that uCode would fill.
2144                  */
2145                 if (num_wraps)
2146                         pos = iwl_print_event_log(priv, next_entry,
2147                                                 capacity - next_entry, mode,
2148                                                 pos, buf, bufsz);
2149                 /* (then/else) start at top of log */
2150                 pos = iwl_print_event_log(priv, 0,
2151                                           next_entry, mode, pos, buf, bufsz);
2152         } else
2153                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2154                                                 next_entry, size, mode,
2155                                                 pos, buf, bufsz);
2156 #else
2157         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2158                                         next_entry, size, mode,
2159                                         pos, buf, bufsz);
2160 #endif
2161         return pos;
2162 }
2163
2164 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
2165 {
2166         unsigned int reload_msec;
2167         unsigned long reload_jiffies;
2168
2169 #ifdef CONFIG_IWLWIFI_DEBUG
2170         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
2171                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
2172 #endif
2173
2174         /* uCode is no longer loaded. */
2175         priv->ucode_loaded = false;
2176
2177         /* Set the FW error flag -- cleared on iwl_down */
2178         set_bit(STATUS_FW_ERROR, &priv->status);
2179
2180         /* Cancel currently queued command. */
2181         clear_bit(STATUS_HCMD_ACTIVE, &priv->shrd->status);
2182
2183         iwl_abort_notification_waits(&priv->notif_wait);
2184
2185         /* Keep the restart process from trying to send host
2186          * commands by clearing the ready bit */
2187         clear_bit(STATUS_READY, &priv->status);
2188
2189         wake_up(&trans(priv)->wait_command_queue);
2190
2191         if (!ondemand) {
2192                 /*
2193                  * If firmware keep reloading, then it indicate something
2194                  * serious wrong and firmware having problem to recover
2195                  * from it. Instead of keep trying which will fill the syslog
2196                  * and hang the system, let's just stop it
2197                  */
2198                 reload_jiffies = jiffies;
2199                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
2200                                         (long) priv->reload_jiffies);
2201                 priv->reload_jiffies = reload_jiffies;
2202                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
2203                         priv->reload_count++;
2204                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
2205                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
2206                                 return;
2207                         }
2208                 } else
2209                         priv->reload_count = 0;
2210         }
2211
2212         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2213                 if (iwlagn_mod_params.restart_fw) {
2214                         IWL_DEBUG_FW_ERRORS(priv,
2215                                   "Restarting adapter due to uCode error.\n");
2216                         queue_work(priv->workqueue, &priv->restart);
2217                 } else
2218                         IWL_DEBUG_FW_ERRORS(priv,
2219                                   "Detected FW error, but not restarting\n");
2220         }
2221 }
2222
2223 static void iwl_nic_error(struct iwl_op_mode *op_mode)
2224 {
2225         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2226
2227         IWL_ERR(priv, "Loaded firmware version: %s\n",
2228                 priv->fw->fw_version);
2229
2230         iwl_dump_nic_error_log(priv);
2231         iwl_dump_nic_event_log(priv, false, NULL, false);
2232
2233         iwlagn_fw_error(priv, false);
2234 }
2235
2236 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2237 {
2238         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2239
2240         if (!iwl_check_for_ct_kill(priv)) {
2241                 IWL_ERR(priv, "Restarting adapter queue is full\n");
2242                 iwlagn_fw_error(priv, false);
2243         }
2244 }
2245
2246 static void iwl_nic_config(struct iwl_op_mode *op_mode)
2247 {
2248         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2249
2250         priv->lib->nic_config(priv);
2251 }
2252
2253 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2254 {
2255         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2256         int ac = priv->queue_to_ac[queue];
2257
2258         if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2259                 return;
2260
2261         if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
2262                 IWL_DEBUG_TX_QUEUES(priv,
2263                         "queue %d (AC %d) already stopped\n",
2264                         queue, ac);
2265                 return;
2266         }
2267
2268         set_bit(ac, &priv->transport_queue_stop);
2269         ieee80211_stop_queue(priv->hw, ac);
2270 }
2271
2272 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2273 {
2274         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2275         int ac = priv->queue_to_ac[queue];
2276
2277         if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2278                 return;
2279
2280         if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
2281                 IWL_DEBUG_TX_QUEUES(priv,
2282                         "queue %d (AC %d) already awake\n",
2283                         queue, ac);
2284                 return;
2285         }
2286
2287         clear_bit(ac, &priv->transport_queue_stop);
2288
2289         if (!priv->passive_no_rx)
2290                 ieee80211_wake_queue(priv->hw, ac);
2291 }
2292
2293 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2294 {
2295         int ac;
2296
2297         if (!priv->passive_no_rx)
2298                 return;
2299
2300         for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
2301                 if (!test_bit(ac, &priv->transport_queue_stop)) {
2302                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
2303                         ieee80211_wake_queue(priv->hw, ac);
2304                 } else {
2305                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2306                 }
2307         }
2308
2309         priv->passive_no_rx = false;
2310 }
2311
2312 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2313 {
2314         struct ieee80211_tx_info *info;
2315
2316         info = IEEE80211_SKB_CB(skb);
2317         kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
2318         dev_kfree_skb_any(skb);
2319 }
2320
2321 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2322 {
2323         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2324
2325         if (state)
2326                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2327         else
2328                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2329
2330         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2331 }
2332
2333 const struct iwl_op_mode_ops iwl_dvm_ops = {
2334         .start = iwl_op_mode_dvm_start,
2335         .stop = iwl_op_mode_dvm_stop,
2336         .rx = iwl_rx_dispatch,
2337         .queue_full = iwl_stop_sw_queue,
2338         .queue_not_full = iwl_wake_sw_queue,
2339         .hw_rf_kill = iwl_set_hw_rfkill_state,
2340         .free_skb = iwl_free_skb,
2341         .nic_error = iwl_nic_error,
2342         .cmd_queue_full = iwl_cmd_queue_full,
2343         .nic_config = iwl_nic_config,
2344 };
2345
2346 /*****************************************************************************
2347  *
2348  * driver and module entry point
2349  *
2350  *****************************************************************************/
2351
2352 struct kmem_cache *iwl_tx_cmd_pool;
2353
2354 static int __init iwl_init(void)
2355 {
2356
2357         int ret;
2358         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2359         pr_info(DRV_COPYRIGHT "\n");
2360
2361         iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2362                                             sizeof(struct iwl_device_cmd),
2363                                             sizeof(void *), 0, NULL);
2364         if (!iwl_tx_cmd_pool)
2365                 return -ENOMEM;
2366
2367         ret = iwlagn_rate_control_register();
2368         if (ret) {
2369                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2370                 goto error_rc_register;
2371         }
2372
2373         ret = iwl_pci_register_driver();
2374         if (ret)
2375                 goto error_pci_register;
2376         return ret;
2377
2378 error_pci_register:
2379         iwlagn_rate_control_unregister();
2380 error_rc_register:
2381         kmem_cache_destroy(iwl_tx_cmd_pool);
2382         return ret;
2383 }
2384
2385 static void __exit iwl_exit(void)
2386 {
2387         iwl_pci_unregister_driver();
2388         iwlagn_rate_control_unregister();
2389         kmem_cache_destroy(iwl_tx_cmd_pool);
2390 }
2391
2392 module_exit(iwl_exit);
2393 module_init(iwl_init);
2394
2395 #ifdef CONFIG_IWLWIFI_DEBUG
2396 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2397                    S_IRUGO | S_IWUSR);
2398 MODULE_PARM_DESC(debug, "debug output mask");
2399 #endif
2400
2401 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2402 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2403 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2404 MODULE_PARM_DESC(11n_disable,
2405         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
2406 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2407                    int, S_IRUGO);
2408 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2409 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2410 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2411
2412 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2413                    int, S_IRUGO);
2414 MODULE_PARM_DESC(antenna_coupling,
2415                  "specify antenna coupling in dB (defualt: 0 dB)");
2416
2417 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2418                    bool, S_IRUGO);
2419 MODULE_PARM_DESC(bt_ch_inhibition,
2420                  "Enable BT channel inhibition (default: enable)");
2421
2422 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2423 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2424
2425 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2426 MODULE_PARM_DESC(wd_disable,
2427                 "Disable stuck queue watchdog timer 0=system default, "
2428                 "1=disable, 2=enable (default: 0)");
2429
2430 /*
2431  * set bt_coex_active to true, uCode will do kill/defer
2432  * every time the priority line is asserted (BT is sending signals on the
2433  * priority line in the PCIx).
2434  * set bt_coex_active to false, uCode will ignore the BT activity and
2435  * perform the normal operation
2436  *
2437  * User might experience transmit issue on some platform due to WiFi/BT
2438  * co-exist problem. The possible behaviors are:
2439  *   Able to scan and finding all the available AP
2440  *   Not able to associate with any AP
2441  * On those platforms, WiFi communication can be restored by set
2442  * "bt_coex_active" module parameter to "false"
2443  *
2444  * default: bt_coex_active = true (BT_COEX_ENABLE)
2445  */
2446 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2447                 bool, S_IRUGO);
2448 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2449
2450 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2451 MODULE_PARM_DESC(led_mode, "0=system default, "
2452                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
2453
2454 module_param_named(power_save, iwlagn_mod_params.power_save,
2455                 bool, S_IRUGO);
2456 MODULE_PARM_DESC(power_save,
2457                  "enable WiFi power management (default: disable)");
2458
2459 module_param_named(power_level, iwlagn_mod_params.power_level,
2460                 int, S_IRUGO);
2461 MODULE_PARM_DESC(power_level,
2462                  "default power save level (range from 1 - 5, default: 1)");
2463
2464 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2465                 bool, S_IRUGO);
2466 MODULE_PARM_DESC(auto_agg,
2467                  "enable agg w/o check traffic load (default: enable)");