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