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 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/delay.h>
  34 #include <linux/sched.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/if_arp.h>
  39
  40 #include <net/mac80211.h>
  41
  42 #include <asm/div64.h>
  43
  44 #include "iwl-eeprom.h"
  45 #include "iwl-dev.h"
  46 #include "iwl-core.h"
  47 #include "iwl-io.h"
  48 #include "iwl-agn-calib.h"
  49 #include "iwl-agn.h"
  50 #include "iwl-shared.h"
  51 #include "iwl-trans.h"
  52 #include "iwl-op-mode.h"
  53
  54 /******************************************************************************
  55  *
  56  * module boiler plate
  57  *
  58  ******************************************************************************/
  59
  60 /*
  61  * module name, copyright, version, etc.
  62  */
  63 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  64
  65 #ifdef CONFIG_IWLWIFI_DEBUG
  66 #define VD "d"
  67 #else
  68 #define VD
  69 #endif
  70
  71 #define DRV_VERSION     IWLWIFI_VERSION VD
  72
  73
  74 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  75 MODULE_VERSION(DRV_VERSION);
  76 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  77 MODULE_LICENSE("GPL");
  78 MODULE_ALIAS("iwlagn");
  79
  80 void iwl_update_chain_flags(struct iwl_priv *priv)
  81 {
  82         struct iwl_rxon_context *ctx;
  83
  84         for_each_context(priv, ctx) {
  85                 iwlagn_set_rxon_chain(priv, ctx);
  86                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  87                         iwlagn_commit_rxon(priv, ctx);
  88         }
  89 }
  90
  91 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  92 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  93                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  94                                u8 *beacon, u32 frame_size)
  95 {
  96         u16 tim_idx;
  97         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
  98
  99         /*
 100          * The index is relative to frame start but we start looking at the
 101          * variable-length part of the beacon.
 102          */
 103         tim_idx = mgmt->u.beacon.variable - beacon;
 104
 105         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 106         while ((tim_idx < (frame_size - 2)) &&
 107                         (beacon[tim_idx] != WLAN_EID_TIM))
 108                 tim_idx += beacon[tim_idx+1] + 2;
 109
 110         /* If TIM field was found, set variables */
 111         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 112                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 113                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 114         } else
 115                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 116 }
 117
 118 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 119 {
 120         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 121         struct iwl_host_cmd cmd = {
 122                 .id = REPLY_TX_BEACON,
 123                 .flags = CMD_SYNC,
 124         };
 125         struct ieee80211_tx_info *info;
 126         u32 frame_size;
 127         u32 rate_flags;
 128         u32 rate;
 129
 130         /*
 131          * We have to set up the TX command, the TX Beacon command, and the
 132          * beacon contents.
 133          */
 134
 135         lockdep_assert_held(&priv->mutex);
 136
 137         if (!priv->beacon_ctx) {
 138                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 139                 return 0;
 140         }
 141
 142         if (WARN_ON(!priv->beacon_skb))
 143                 return -EINVAL;
 144
 145         /* Allocate beacon command */
 146         if (!priv->beacon_cmd)
 147                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 148         tx_beacon_cmd = priv->beacon_cmd;
 149         if (!tx_beacon_cmd)
 150                 return -ENOMEM;
 151
 152         frame_size = priv->beacon_skb->len;
 153
 154         /* Set up TX command fields */
 155         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 156         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 157         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 158         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 159                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 160
 161         /* Set up TX beacon command fields */
 162         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 163                            frame_size);
 164
 165         /* Set up packet rate and flags */
 166         info = IEEE80211_SKB_CB(priv->beacon_skb);
 167
 168         /*
 169          * Let's set up the rate at least somewhat correctly;
 170          * it will currently not actually be used by the uCode,
 171          * it uses the broadcast station's rate instead.
 172          */
 173         if (info->control.rates[0].idx < 0 ||
 174             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 175                 rate = 0;
 176         else
 177                 rate = info->control.rates[0].idx;
 178
 179         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 180                                               hw_params(priv).valid_tx_ant);
 181         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 182
 183         /* In mac80211, rates for 5 GHz start at 0 */
 184         if (info->band == IEEE80211_BAND_5GHZ)
 185                 rate += IWL_FIRST_OFDM_RATE;
 186         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 187                 rate_flags |= RATE_MCS_CCK_MSK;
 188
 189         tx_beacon_cmd->tx.rate_n_flags =
 190                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 191
 192         /* Submit command */
 193         cmd.len[0] = sizeof(*tx_beacon_cmd);
 194         cmd.data[0] = tx_beacon_cmd;
 195         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 196         cmd.len[1] = frame_size;
 197         cmd.data[1] = priv->beacon_skb->data;
 198         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 199
 200         return iwl_dvm_send_cmd(priv, &cmd);
 201 }
 202
 203 static void iwl_bg_beacon_update(struct work_struct *work)
 204 {
 205         struct iwl_priv *priv =
 206                 container_of(work, struct iwl_priv, beacon_update);
 207         struct sk_buff *beacon;
 208
 209         mutex_lock(&priv->mutex);
 210         if (!priv->beacon_ctx) {
 211                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 212                 goto out;
 213         }
 214
 215         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 216                 /*
 217                  * The ucode will send beacon notifications even in
 218                  * IBSS mode, but we don't want to process them. But
 219                  * we need to defer the type check to here due to
 220                  * requiring locking around the beacon_ctx access.
 221                  */
 222                 goto out;
 223         }
 224
 225         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 226         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 227         if (!beacon) {
 228                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 229                 goto out;
 230         }
 231
 232         /* new beacon skb is allocated every time; dispose previous.*/
 233         dev_kfree_skb(priv->beacon_skb);
 234
 235         priv->beacon_skb = beacon;
 236
 237         iwlagn_send_beacon_cmd(priv);
 238  out:
 239         mutex_unlock(&priv->mutex);
 240 }
 241
 242 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 243 {
 244         struct iwl_priv *priv =
 245                 container_of(work, struct iwl_priv, bt_runtime_config);
 246
 247         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 248                 return;
 249
 250         /* dont send host command if rf-kill is on */
 251         if (!iwl_is_ready_rf(priv))
 252                 return;
 253         iwlagn_send_advance_bt_config(priv);
 254 }
 255
 256 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 257 {
 258         struct iwl_priv *priv =
 259                 container_of(work, struct iwl_priv, bt_full_concurrency);
 260         struct iwl_rxon_context *ctx;
 261
 262         mutex_lock(&priv->mutex);
 263
 264         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 265                 goto out;
 266
 267         /* dont send host command if rf-kill is on */
 268         if (!iwl_is_ready_rf(priv))
 269                 goto out;
 270
 271         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 272                        priv->bt_full_concurrent ?
 273                        "full concurrency" : "3-wire");
 274
 275         /*
 276          * LQ & RXON updated cmds must be sent before BT Config cmd
 277          * to avoid 3-wire collisions
 278          */
 279         for_each_context(priv, ctx) {
 280                 iwlagn_set_rxon_chain(priv, ctx);
 281                 iwlagn_commit_rxon(priv, ctx);
 282         }
 283
 284         iwlagn_send_advance_bt_config(priv);
 285 out:
 286         mutex_unlock(&priv->mutex);
 287 }
 288
 289 /**
 290  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 291  *
 292  * This callback is provided in order to send a statistics request.
 293  *
 294  * This timer function is continually reset to execute within
 295  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 296  * was received.  We need to ensure we receive the statistics in order
 297  * to update the temperature used for calibrating the TXPOWER.
 298  */
 299 static void iwl_bg_statistics_periodic(unsigned long data)
 300 {
 301         struct iwl_priv *priv = (struct iwl_priv *)data;
 302
 303         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 304                 return;
 305
 306         /* dont send host command if rf-kill is on */
 307         if (!iwl_is_ready_rf(priv))
 308                 return;
 309
 310         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 311 }
 312
 313
 314 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 315                                         u32 start_idx, u32 num_events,
 316                                         u32 capacity, u32 mode)
 317 {
 318         u32 i;
 319         u32 ptr;        /* SRAM byte address of log data */
 320         u32 ev, time, data; /* event log data */
 321         unsigned long reg_flags;
 322
 323         if (mode == 0)
 324                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 325         else
 326                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 327
 328         /* Make sure device is powered up for SRAM reads */
 329         spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
 330         if (unlikely(!iwl_grab_nic_access(trans(priv)))) {
 331                 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 332                 return;
 333         }
 334
 335         /* Set starting address; reads will auto-increment */
 336         iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
 337
 338         /*
 339          * Refuse to read more than would have fit into the log from
 340          * the current start_idx. This used to happen due to the race
 341          * described below, but now WARN because the code below should
 342          * prevent it from happening here.
 343          */
 344         if (WARN_ON(num_events > capacity - start_idx))
 345                 num_events = capacity - start_idx;
 346
 347         /*
 348          * "time" is actually "data" for mode 0 (no timestamp).
 349          * place event id # at far right for easier visual parsing.
 350          */
 351         for (i = 0; i < num_events; i++) {
 352                 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 353                 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 354                 if (mode == 0) {
 355                         trace_iwlwifi_dev_ucode_cont_event(
 356                                         trans(priv)->dev, 0, time, ev);
 357                 } else {
 358                         data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 359                         trace_iwlwifi_dev_ucode_cont_event(
 360                                         trans(priv)->dev, time, data, ev);
 361                 }
 362         }
 363         /* Allow device to power down */
 364         iwl_release_nic_access(trans(priv));
 365         spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 366 }
 367
 368 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 369 {
 370         u32 capacity;   /* event log capacity in # entries */
 371         struct {
 372                 u32 capacity;
 373                 u32 mode;
 374                 u32 wrap_counter;
 375                 u32 write_counter;
 376         } __packed read;
 377         u32 base;       /* SRAM byte address of event log header */
 378         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 379         u32 num_wraps;  /* # times uCode wrapped to top of log */
 380         u32 next_entry; /* index of next entry to be written by uCode */
 381
 382         base = priv->device_pointers.log_event_table;
 383         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 384                 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
 385
 386                 capacity = read.capacity;
 387                 mode = read.mode;
 388                 num_wraps = read.wrap_counter;
 389                 next_entry = read.write_counter;
 390         } else
 391                 return;
 392
 393         /*
 394          * Unfortunately, the uCode doesn't use temporary variables.
 395          * Therefore, it can happen that we read next_entry == capacity,
 396          * which really means next_entry == 0.
 397          */
 398         if (unlikely(next_entry == capacity))
 399                 next_entry = 0;
 400         /*
 401          * Additionally, the uCode increases the write pointer before
 402          * the wraps counter, so if the write pointer is smaller than
 403          * the old write pointer (wrap occurred) but we read that no
 404          * wrap occurred, we actually read between the next_entry and
 405          * num_wraps update (this does happen in practice!!) -- take
 406          * that into account by increasing num_wraps.
 407          */
 408         if (unlikely(next_entry < priv->event_log.next_entry &&
 409                      num_wraps == priv->event_log.num_wraps))
 410                 num_wraps++;
 411
 412         if (num_wraps == priv->event_log.num_wraps) {
 413                 iwl_print_cont_event_trace(
 414                         priv, base, priv->event_log.next_entry,
 415                         next_entry - priv->event_log.next_entry,
 416                         capacity, mode);
 417
 418                 priv->event_log.non_wraps_count++;
 419         } else {
 420                 if (num_wraps - priv->event_log.num_wraps > 1)
 421                         priv->event_log.wraps_more_count++;
 422                 else
 423                         priv->event_log.wraps_once_count++;
 424
 425                 trace_iwlwifi_dev_ucode_wrap_event(trans(priv)->dev,
 426                                 num_wraps - priv->event_log.num_wraps,
 427                                 next_entry, priv->event_log.next_entry);
 428
 429                 if (next_entry < priv->event_log.next_entry) {
 430                         iwl_print_cont_event_trace(
 431                                 priv, base, priv->event_log.next_entry,
 432                                 capacity - priv->event_log.next_entry,
 433                                 capacity, mode);
 434
 435                         iwl_print_cont_event_trace(
 436                                 priv, base, 0, next_entry, capacity, mode);
 437                 } else {
 438                         iwl_print_cont_event_trace(
 439                                 priv, base, next_entry,
 440                                 capacity - next_entry,
 441                                 capacity, mode);
 442
 443                         iwl_print_cont_event_trace(
 444                                 priv, base, 0, next_entry, capacity, mode);
 445                 }
 446         }
 447
 448         priv->event_log.num_wraps = num_wraps;
 449         priv->event_log.next_entry = next_entry;
 450 }
 451
 452 /**
 453  * iwl_bg_ucode_trace - Timer callback to log ucode event
 454  *
 455  * The timer is continually set to execute every
 456  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 457  * this function is to perform continuous uCode event logging operation
 458  * if enabled
 459  */
 460 static void iwl_bg_ucode_trace(unsigned long data)
 461 {
 462         struct iwl_priv *priv = (struct iwl_priv *)data;
 463
 464         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 465                 return;
 466
 467         if (priv->event_log.ucode_trace) {
 468                 iwl_continuous_event_trace(priv);
 469                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 470                 mod_timer(&priv->ucode_trace,
 471                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 472         }
 473 }
 474
 475 static void iwl_bg_tx_flush(struct work_struct *work)
 476 {
 477         struct iwl_priv *priv =
 478                 container_of(work, struct iwl_priv, tx_flush);
 479
 480         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 481                 return;
 482
 483         /* do nothing if rf-kill is on */
 484         if (!iwl_is_ready_rf(priv))
 485                 return;
 486
 487         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 488         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 489 }
 490
 491 /*
 492  * queue/FIFO/AC mapping definitions
 493  */
 494
 495 #define IWL_TX_FIFO_BK          0       /* shared */
 496 #define IWL_TX_FIFO_BE          1
 497 #define IWL_TX_FIFO_VI          2       /* shared */
 498 #define IWL_TX_FIFO_VO          3
 499 #define IWL_TX_FIFO_BK_IPAN     IWL_TX_FIFO_BK
 500 #define IWL_TX_FIFO_BE_IPAN     4
 501 #define IWL_TX_FIFO_VI_IPAN     IWL_TX_FIFO_VI
 502 #define IWL_TX_FIFO_VO_IPAN     5
 503 /* re-uses the VO FIFO, uCode will properly flush/schedule */
 504 #define IWL_TX_FIFO_AUX         5
 505 #define IWL_TX_FIFO_UNUSED      -1
 506
 507 #define IWLAGN_CMD_FIFO_NUM     7
 508
 509 /*
 510  * This queue number is required for proper operation
 511  * because the ucode will stop/start the scheduler as
 512  * required.
 513  */
 514 #define IWL_IPAN_MCAST_QUEUE    8
 515
 516 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
 517         IWL_TX_FIFO_VO,
 518         IWL_TX_FIFO_VI,
 519         IWL_TX_FIFO_BE,
 520         IWL_TX_FIFO_BK,
 521         IWLAGN_CMD_FIFO_NUM,
 522 };
 523
 524 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
 525         IWL_TX_FIFO_VO,
 526         IWL_TX_FIFO_VI,
 527         IWL_TX_FIFO_BE,
 528         IWL_TX_FIFO_BK,
 529         IWL_TX_FIFO_BK_IPAN,
 530         IWL_TX_FIFO_BE_IPAN,
 531         IWL_TX_FIFO_VI_IPAN,
 532         IWL_TX_FIFO_VO_IPAN,
 533         IWL_TX_FIFO_BE_IPAN,
 534         IWLAGN_CMD_FIFO_NUM,
 535         IWL_TX_FIFO_AUX,
 536 };
 537
 538 static const u8 iwlagn_bss_ac_to_fifo[] = {
 539         IWL_TX_FIFO_VO,
 540         IWL_TX_FIFO_VI,
 541         IWL_TX_FIFO_BE,
 542         IWL_TX_FIFO_BK,
 543 };
 544
 545 static const u8 iwlagn_bss_ac_to_queue[] = {
 546         0, 1, 2, 3,
 547 };
 548
 549 static const u8 iwlagn_pan_ac_to_fifo[] = {
 550         IWL_TX_FIFO_VO_IPAN,
 551         IWL_TX_FIFO_VI_IPAN,
 552         IWL_TX_FIFO_BE_IPAN,
 553         IWL_TX_FIFO_BK_IPAN,
 554 };
 555
 556 static const u8 iwlagn_pan_ac_to_queue[] = {
 557         7, 6, 5, 4,
 558 };
 559
 560 static const u8 iwlagn_bss_queue_to_ac[] = {
 561         IEEE80211_AC_VO,
 562         IEEE80211_AC_VI,
 563         IEEE80211_AC_BE,
 564         IEEE80211_AC_BK,
 565 };
 566
 567 static const u8 iwlagn_pan_queue_to_ac[] = {
 568         IEEE80211_AC_VO,
 569         IEEE80211_AC_VI,
 570         IEEE80211_AC_BE,
 571         IEEE80211_AC_BK,
 572         IEEE80211_AC_BK,
 573         IEEE80211_AC_BE,
 574         IEEE80211_AC_VI,
 575         IEEE80211_AC_VO,
 576 };
 577
 578 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 579 {
 580         int i;
 581
 582         /*
 583          * The default context is always valid,
 584          * the PAN context depends on uCode.
 585          */
 586         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 587         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 588                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 589
 590         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 591                 priv->contexts[i].ctxid = i;
 592
 593         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 594         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 595         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 596         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 597         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 598         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 599         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 600         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 601         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 602         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 603                 BIT(NL80211_IFTYPE_ADHOC);
 604         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 605                 BIT(NL80211_IFTYPE_STATION);
 606         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 607         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 608         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 609         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 610         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 611                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 612         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 613                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 614
 615         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 616         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 617                 REPLY_WIPAN_RXON_TIMING;
 618         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 619                 REPLY_WIPAN_RXON_ASSOC;
 620         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 621         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 622         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 623         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 624         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 625         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 626                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 627
 628         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 629                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 630                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 631                         BIT(NL80211_IFTYPE_P2P_GO);
 632
 633         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 634         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 635         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 636         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 637                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 638         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 639                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 640         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 641
 642         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 643 }
 644
 645 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 646 {
 647         struct iwl_ct_kill_config cmd;
 648         struct iwl_ct_kill_throttling_config adv_cmd;
 649         int ret = 0;
 650
 651         iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
 652                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 653
 654         priv->thermal_throttle.ct_kill_toggle = false;
 655
 656         if (cfg(priv)->base_params->support_ct_kill_exit) {
 657                 adv_cmd.critical_temperature_enter =
 658                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
 659                 adv_cmd.critical_temperature_exit =
 660                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
 661
 662                 ret = iwl_dvm_send_cmd_pdu(priv,
 663                                        REPLY_CT_KILL_CONFIG_CMD,
 664                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 665                 if (ret)
 666                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 667                 else
 668                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 669                                 "succeeded, critical temperature enter is %d,"
 670                                 "exit is %d\n",
 671                                 hw_params(priv).ct_kill_threshold,
 672                                 hw_params(priv).ct_kill_exit_threshold);
 673         } else {
 674                 cmd.critical_temperature_R =
 675                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
 676
 677                 ret = iwl_dvm_send_cmd_pdu(priv,
 678                                        REPLY_CT_KILL_CONFIG_CMD,
 679                                        CMD_SYNC, sizeof(cmd), &cmd);
 680                 if (ret)
 681                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 682                 else
 683                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 684                                 "succeeded, "
 685                                 "critical temperature is %d\n",
 686                                 hw_params(priv).ct_kill_threshold);
 687         }
 688 }
 689
 690 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 691 {
 692         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 693         struct iwl_host_cmd cmd = {
 694                 .id = CALIBRATION_CFG_CMD,
 695                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 696                 .data = { &calib_cfg_cmd, },
 697         };
 698
 699         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 700         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 701         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 702
 703         return iwl_dvm_send_cmd(priv, &cmd);
 704 }
 705
 706
 707 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 708 {
 709         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 710           .valid = cpu_to_le32(valid_tx_ant),
 711         };
 712
 713         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 714                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 715                 return iwl_dvm_send_cmd_pdu(priv,
 716                                         TX_ANT_CONFIGURATION_CMD,
 717                                         CMD_SYNC,
 718                                         sizeof(struct iwl_tx_ant_config_cmd),
 719                                         &tx_ant_cmd);
 720         } else {
 721                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 722                 return -EOPNOTSUPP;
 723         }
 724 }
 725
 726 /**
 727  * iwl_alive_start - called after REPLY_ALIVE notification received
 728  *                   from protocol/runtime uCode (initialization uCode's
 729  *                   Alive gets handled by iwl_init_alive_start()).
 730  */
 731 int iwl_alive_start(struct iwl_priv *priv)
 732 {
 733         int ret = 0;
 734         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 735
 736         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 737
 738         /* After the ALIVE response, we can send host commands to the uCode */
 739         set_bit(STATUS_ALIVE, &priv->status);
 740
 741         /* Enable watchdog to monitor the driver tx queues */
 742         iwl_setup_watchdog(priv);
 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, hw_params(priv).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         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
 888          * to prevent rearm timer */
 889         del_timer_sync(&priv->watchdog);
 890
 891         iwl_clear_ucode_stations(priv, NULL);
 892         iwl_dealloc_bcast_stations(priv);
 893         iwl_clear_driver_stations(priv);
 894
 895         /* reset BT coex data */
 896         priv->bt_status = 0;
 897         priv->cur_rssi_ctx = NULL;
 898         priv->bt_is_sco = 0;
 899         if (cfg(priv)->bt_params)
 900                 priv->bt_traffic_load =
 901                          cfg(priv)->bt_params->bt_init_traffic_load;
 902         else
 903                 priv->bt_traffic_load = 0;
 904         priv->bt_full_concurrent = false;
 905         priv->bt_ci_compliance = 0;
 906
 907         /* Wipe out the EXIT_PENDING status bit if we are not actually
 908          * exiting the module */
 909         if (!exit_pending)
 910                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 911
 912         if (priv->mac80211_registered)
 913                 ieee80211_stop_queues(priv->hw);
 914
 915         priv->ucode_loaded = false;
 916         iwl_trans_stop_device(trans(priv));
 917
 918         /* Clear out all status bits but a few that are stable across reset */
 919         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 920                                 STATUS_RF_KILL_HW |
 921                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
 922                                 STATUS_GEO_CONFIGURED |
 923                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 924                                 STATUS_EXIT_PENDING;
 925         priv->shrd->status &=
 926                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
 927                                 STATUS_FW_ERROR;
 928
 929         dev_kfree_skb(priv->beacon_skb);
 930         priv->beacon_skb = NULL;
 931 }
 932
 933 /*****************************************************************************
 934  *
 935  * Workqueue callbacks
 936  *
 937  *****************************************************************************/
 938
 939 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 940 {
 941         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 942                         run_time_calib_work);
 943
 944         mutex_lock(&priv->mutex);
 945
 946         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 947             test_bit(STATUS_SCANNING, &priv->status)) {
 948                 mutex_unlock(&priv->mutex);
 949                 return;
 950         }
 951
 952         if (priv->start_calib) {
 953                 iwl_chain_noise_calibration(priv);
 954                 iwl_sensitivity_calibration(priv);
 955         }
 956
 957         mutex_unlock(&priv->mutex);
 958 }
 959
 960 void iwlagn_prepare_restart(struct iwl_priv *priv)
 961 {
 962         struct iwl_rxon_context *ctx;
 963         bool bt_full_concurrent;
 964         u8 bt_ci_compliance;
 965         u8 bt_load;
 966         u8 bt_status;
 967         bool bt_is_sco;
 968         int i;
 969
 970         lockdep_assert_held(&priv->mutex);
 971
 972         for_each_context(priv, ctx)
 973                 ctx->vif = NULL;
 974         priv->is_open = 0;
 975
 976         /*
 977          * __iwl_down() will clear the BT status variables,
 978          * which is correct, but when we restart we really
 979          * want to keep them so restore them afterwards.
 980          *
 981          * The restart process will later pick them up and
 982          * re-configure the hw when we reconfigure the BT
 983          * command.
 984          */
 985         bt_full_concurrent = priv->bt_full_concurrent;
 986         bt_ci_compliance = priv->bt_ci_compliance;
 987         bt_load = priv->bt_traffic_load;
 988         bt_status = priv->bt_status;
 989         bt_is_sco = priv->bt_is_sco;
 990
 991         iwl_down(priv);
 992
 993         priv->bt_full_concurrent = bt_full_concurrent;
 994         priv->bt_ci_compliance = bt_ci_compliance;
 995         priv->bt_traffic_load = bt_load;
 996         priv->bt_status = bt_status;
 997         priv->bt_is_sco = bt_is_sco;
 998
 999         /* reset all queues */
1000         for (i = 0; i < IEEE80211_NUM_ACS; i++)
1001                 atomic_set(&priv->ac_stop_count[i], 0);
1002
1003         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1004                 priv->queue_to_ac[i] = IWL_INVALID_AC;
1005
1006         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1007 }
1008
1009 static void iwl_bg_restart(struct work_struct *data)
1010 {
1011         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1012
1013         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1014                 return;
1015
1016         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1017                 mutex_lock(&priv->mutex);
1018                 iwlagn_prepare_restart(priv);
1019                 mutex_unlock(&priv->mutex);
1020                 iwl_cancel_deferred_work(priv);
1021                 ieee80211_restart_hw(priv->hw);
1022         } else {
1023                 WARN_ON(1);
1024         }
1025 }
1026
1027
1028
1029
1030 void iwlagn_disable_roc(struct iwl_priv *priv)
1031 {
1032         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1033
1034         lockdep_assert_held(&priv->mutex);
1035
1036         if (!priv->hw_roc_setup)
1037                 return;
1038
1039         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1040         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1041
1042         priv->hw_roc_channel = NULL;
1043
1044         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1045
1046         iwlagn_commit_rxon(priv, ctx);
1047
1048         ctx->is_active = false;
1049         priv->hw_roc_setup = false;
1050 }
1051
1052 static void iwlagn_disable_roc_work(struct work_struct *work)
1053 {
1054         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1055                                              hw_roc_disable_work.work);
1056
1057         mutex_lock(&priv->mutex);
1058         iwlagn_disable_roc(priv);
1059         mutex_unlock(&priv->mutex);
1060 }
1061
1062 /*****************************************************************************
1063  *
1064  * driver setup and teardown
1065  *
1066  *****************************************************************************/
1067
1068 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1069 {
1070         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1071
1072         INIT_WORK(&priv->restart, iwl_bg_restart);
1073         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1074         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1075         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1076         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1077         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1078         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1079                           iwlagn_disable_roc_work);
1080
1081         iwl_setup_scan_deferred_work(priv);
1082
1083         if (cfg(priv)->bt_params)
1084                 iwlagn_bt_setup_deferred_work(priv);
1085
1086         init_timer(&priv->statistics_periodic);
1087         priv->statistics_periodic.data = (unsigned long)priv;
1088         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1089
1090         init_timer(&priv->ucode_trace);
1091         priv->ucode_trace.data = (unsigned long)priv;
1092         priv->ucode_trace.function = iwl_bg_ucode_trace;
1093
1094         init_timer(&priv->watchdog);
1095         priv->watchdog.data = (unsigned long)priv;
1096         priv->watchdog.function = iwl_bg_watchdog;
1097 }
1098
1099 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1100 {
1101         if (cfg(priv)->bt_params)
1102                 iwlagn_bt_cancel_deferred_work(priv);
1103
1104         cancel_work_sync(&priv->run_time_calib_work);
1105         cancel_work_sync(&priv->beacon_update);
1106
1107         iwl_cancel_scan_deferred_work(priv);
1108
1109         cancel_work_sync(&priv->bt_full_concurrency);
1110         cancel_work_sync(&priv->bt_runtime_config);
1111         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1112
1113         del_timer_sync(&priv->statistics_periodic);
1114         del_timer_sync(&priv->ucode_trace);
1115 }
1116
1117 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1118 {
1119         int i;
1120
1121         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1122                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1123                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1124                 rates[i].hw_value_short = i;
1125                 rates[i].flags = 0;
1126                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1127                         /*
1128                          * If CCK != 1M then set short preamble rate flag.
1129                          */
1130                         rates[i].flags |=
1131                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1132                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1133                 }
1134         }
1135 }
1136
1137 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1138 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1139 static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1140                               struct ieee80211_sta_ht_cap *ht_info,
1141                               enum ieee80211_band band)
1142 {
1143         u16 max_bit_rate = 0;
1144         u8 rx_chains_num = hw_params(priv).rx_chains_num;
1145         u8 tx_chains_num = hw_params(priv).tx_chains_num;
1146
1147         ht_info->cap = 0;
1148         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1149
1150         ht_info->ht_supported = true;
1151
1152         if (cfg(priv)->ht_params &&
1153             cfg(priv)->ht_params->ht_greenfield_support)
1154                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1155         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1156         max_bit_rate = MAX_BIT_RATE_20_MHZ;
1157         if (hw_params(priv).ht40_channel & BIT(band)) {
1158                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1159                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1160                 ht_info->mcs.rx_mask[4] = 0x01;
1161                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1162         }
1163
1164         if (iwlagn_mod_params.amsdu_size_8K)
1165                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1166
1167         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1168         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1169
1170         ht_info->mcs.rx_mask[0] = 0xFF;
1171         if (rx_chains_num >= 2)
1172                 ht_info->mcs.rx_mask[1] = 0xFF;
1173         if (rx_chains_num >= 3)
1174                 ht_info->mcs.rx_mask[2] = 0xFF;
1175
1176         /* Highest supported Rx data rate */
1177         max_bit_rate *= rx_chains_num;
1178         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1179         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1180
1181         /* Tx MCS capabilities */
1182         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1183         if (tx_chains_num != rx_chains_num) {
1184                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1185                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1186                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1187         }
1188 }
1189
1190 /**
1191  * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1192  */
1193 static int iwl_init_geos(struct iwl_priv *priv)
1194 {
1195         struct iwl_channel_info *ch;
1196         struct ieee80211_supported_band *sband;
1197         struct ieee80211_channel *channels;
1198         struct ieee80211_channel *geo_ch;
1199         struct ieee80211_rate *rates;
1200         int i = 0;
1201         s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1202
1203         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1204             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1205                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1206                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1207                 return 0;
1208         }
1209
1210         channels = kcalloc(priv->channel_count,
1211                            sizeof(struct ieee80211_channel), GFP_KERNEL);
1212         if (!channels)
1213                 return -ENOMEM;
1214
1215         rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1216                         GFP_KERNEL);
1217         if (!rates) {
1218                 kfree(channels);
1219                 return -ENOMEM;
1220         }
1221
1222         /* 5.2GHz channels start after the 2.4GHz channels */
1223         sband = &priv->bands[IEEE80211_BAND_5GHZ];
1224         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1225         /* just OFDM */
1226         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1227         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1228
1229         if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)
1230                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1231                                          IEEE80211_BAND_5GHZ);
1232
1233         sband = &priv->bands[IEEE80211_BAND_2GHZ];
1234         sband->channels = channels;
1235         /* OFDM & CCK */
1236         sband->bitrates = rates;
1237         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1238
1239         if (hw_params(priv).sku & EEPROM_SKU_CAP_11N_ENABLE)
1240                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1241                                          IEEE80211_BAND_2GHZ);
1242
1243         priv->ieee_channels = channels;
1244         priv->ieee_rates = rates;
1245
1246         for (i = 0;  i < priv->channel_count; i++) {
1247                 ch = &priv->channel_info[i];
1248
1249                 /* FIXME: might be removed if scan is OK */
1250                 if (!is_channel_valid(ch))
1251                         continue;
1252
1253                 sband =  &priv->bands[ch->band];
1254
1255                 geo_ch = &sband->channels[sband->n_channels++];
1256
1257                 geo_ch->center_freq =
1258                         ieee80211_channel_to_frequency(ch->channel, ch->band);
1259                 geo_ch->max_power = ch->max_power_avg;
1260                 geo_ch->max_antenna_gain = 0xff;
1261                 geo_ch->hw_value = ch->channel;
1262
1263                 if (is_channel_valid(ch)) {
1264                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1265                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1266
1267                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1268                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1269
1270                         if (ch->flags & EEPROM_CHANNEL_RADAR)
1271                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1272
1273                         geo_ch->flags |= ch->ht40_extension_channel;
1274
1275                         if (ch->max_power_avg > max_tx_power)
1276                                 max_tx_power = ch->max_power_avg;
1277                 } else {
1278                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1279                 }
1280
1281                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1282                                 ch->channel, geo_ch->center_freq,
1283                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
1284                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1285                                 "restricted" : "valid",
1286                                  geo_ch->flags);
1287         }
1288
1289         priv->tx_power_device_lmt = max_tx_power;
1290         priv->tx_power_user_lmt = max_tx_power;
1291         priv->tx_power_next = max_tx_power;
1292
1293         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
1294              hw_params(priv).sku & EEPROM_SKU_CAP_BAND_52GHZ) {
1295                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1296                         "Please send your %s to maintainer.\n",
1297                         trans(priv)->hw_id_str);
1298                 hw_params(priv).sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
1299         }
1300
1301         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1302                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1303                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1304
1305         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1306
1307         return 0;
1308 }
1309
1310 /*
1311  * iwl_free_geos - undo allocations in iwl_init_geos
1312  */
1313 static void iwl_free_geos(struct iwl_priv *priv)
1314 {
1315         kfree(priv->ieee_channels);
1316         kfree(priv->ieee_rates);
1317         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1318 }
1319
1320 static int iwl_init_drv(struct iwl_priv *priv)
1321 {
1322         int ret;
1323
1324         spin_lock_init(&priv->sta_lock);
1325
1326         mutex_init(&priv->mutex);
1327
1328         INIT_LIST_HEAD(&priv->calib_results);
1329
1330         priv->ieee_channels = NULL;
1331         priv->ieee_rates = NULL;
1332         priv->band = IEEE80211_BAND_2GHZ;
1333
1334         priv->plcp_delta_threshold =
1335                 cfg(priv)->base_params->plcp_delta_threshold;
1336
1337         priv->iw_mode = NL80211_IFTYPE_STATION;
1338         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1339         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1340         priv->agg_tids_count = 0;
1341
1342         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1343
1344         /* initialize force reset */
1345         priv->force_reset[IWL_RF_RESET].reset_duration =
1346                 IWL_DELAY_NEXT_FORCE_RF_RESET;
1347         priv->force_reset[IWL_FW_RESET].reset_duration =
1348                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1349
1350         priv->rx_statistics_jiffies = jiffies;
1351
1352         /* Choose which receivers/antennas to use */
1353         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1354
1355         iwl_init_scan_params(priv);
1356
1357         /* init bt coex */
1358         if (cfg(priv)->bt_params &&
1359             cfg(priv)->bt_params->advanced_bt_coexist) {
1360                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1361                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1362                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1363                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1364                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1365                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1366         }
1367
1368         ret = iwl_init_channel_map(priv);
1369         if (ret) {
1370                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1371                 goto err;
1372         }
1373
1374         ret = iwl_init_geos(priv);
1375         if (ret) {
1376                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1377                 goto err_free_channel_map;
1378         }
1379         iwl_init_hw_rates(priv->ieee_rates);
1380
1381         return 0;
1382
1383 err_free_channel_map:
1384         iwl_free_channel_map(priv);
1385 err:
1386         return ret;
1387 }
1388
1389 static void iwl_uninit_drv(struct iwl_priv *priv)
1390 {
1391         iwl_free_geos(priv);
1392         iwl_free_channel_map(priv);
1393         kfree(priv->scan_cmd);
1394         kfree(priv->beacon_cmd);
1395         kfree(rcu_dereference_raw(priv->noa_data));
1396         iwl_calib_free_results(priv);
1397 #ifdef CONFIG_IWLWIFI_DEBUGFS
1398         kfree(priv->wowlan_sram);
1399 #endif
1400 }
1401
1402 /* Size of one Rx buffer in host DRAM */
1403 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1404 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1405
1406 static void iwl_set_hw_params(struct iwl_priv *priv)
1407 {
1408         if (cfg(priv)->ht_params)
1409                 hw_params(priv).use_rts_for_aggregation =
1410                         cfg(priv)->ht_params->use_rts_for_aggregation;
1411
1412         if (iwlagn_mod_params.amsdu_size_8K)
1413                 hw_params(priv).rx_page_order =
1414                         get_order(IWL_RX_BUF_SIZE_8K);
1415         else
1416                 hw_params(priv).rx_page_order =
1417                         get_order(IWL_RX_BUF_SIZE_4K);
1418
1419         if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1420                 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1421
1422         hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1423
1424         /* Device-specific setup */
1425         cfg(priv)->lib->set_hw_params(priv);
1426 }
1427
1428
1429
1430 static void iwl_debug_config(struct iwl_priv *priv)
1431 {
1432         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1433 #ifdef CONFIG_IWLWIFI_DEBUG
1434                 "enabled\n");
1435 #else
1436                 "disabled\n");
1437 #endif
1438         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1439 #ifdef CONFIG_IWLWIFI_DEBUGFS
1440                 "enabled\n");
1441 #else
1442                 "disabled\n");
1443 #endif
1444         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1445 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1446                 "enabled\n");
1447 #else
1448                 "disabled\n");
1449 #endif
1450
1451         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1452 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1453                 "enabled\n");
1454 #else
1455                 "disabled\n");
1456 #endif
1457         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1458 #ifdef CONFIG_IWLWIFI_P2P
1459                 "enabled\n");
1460 #else
1461                 "disabled\n");
1462 #endif
1463 }
1464
1465 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1466                                                  const struct iwl_fw *fw)
1467 {
1468         struct iwl_priv *priv;
1469         struct ieee80211_hw *hw;
1470         struct iwl_op_mode *op_mode;
1471         u16 num_mac;
1472         u32 ucode_flags;
1473         struct iwl_trans_config trans_cfg;
1474         static const u8 no_reclaim_cmds[] = {
1475                 REPLY_RX_PHY_CMD,
1476                 REPLY_RX,
1477                 REPLY_RX_MPDU_CMD,
1478                 REPLY_COMPRESSED_BA,
1479                 STATISTICS_NOTIFICATION,
1480                 REPLY_TX,
1481         };
1482         const u8 *q_to_ac;
1483         int n_q_to_ac;
1484         int i;
1485
1486         /************************
1487          * 1. Allocating HW data
1488          ************************/
1489         hw = iwl_alloc_all();
1490         if (!hw) {
1491                 pr_err("%s: Cannot allocate network device\n",
1492                                 cfg(trans)->name);
1493                 goto out;
1494         }
1495
1496         op_mode = hw->priv;
1497         op_mode->ops = &iwl_dvm_ops;
1498         priv = IWL_OP_MODE_GET_DVM(op_mode);
1499         priv->shrd = trans->shrd;
1500         priv->fw = fw;
1501         /* TODO: remove fw from shared data later */
1502         priv->shrd->fw = fw;
1503
1504         /*
1505          * Populate the state variables that the transport layer needs
1506          * to know about.
1507          */
1508         trans_cfg.op_mode = op_mode;
1509         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1510         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1511
1512         ucode_flags = fw->ucode_capa.flags;
1513
1514 #ifndef CONFIG_IWLWIFI_P2P
1515         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1516 #endif
1517
1518         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1519                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1520                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1521                 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1522                 trans_cfg.n_queue_to_fifo =
1523                         ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1524                 q_to_ac = iwlagn_pan_queue_to_ac;
1525                 n_q_to_ac = ARRAY_SIZE(iwlagn_pan_queue_to_ac);
1526         } else {
1527                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1528                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1529                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1530                 trans_cfg.n_queue_to_fifo =
1531                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1532                 q_to_ac = iwlagn_bss_queue_to_ac;
1533                 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1534         }
1535
1536         /* Configure transport layer */
1537         iwl_trans_configure(trans(priv), &trans_cfg);
1538
1539         /* At this point both hw and priv are allocated. */
1540
1541         SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1542
1543         /* show what debugging capabilities we have */
1544         iwl_debug_config(priv);
1545
1546         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1547
1548         /* is antenna coupling more than 35dB ? */
1549         priv->bt_ant_couple_ok =
1550                 (iwlagn_mod_params.ant_coupling >
1551                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1552                         true : false;
1553
1554         /* enable/disable bt channel inhibition */
1555         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1556         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1557                        (priv->bt_ch_announce) ? "On" : "Off");
1558
1559         if (iwl_alloc_traffic_mem(priv))
1560                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1561
1562         /* these spin locks will be used in apm_ops.init and EEPROM access
1563          * we should init now
1564          */
1565         spin_lock_init(&trans(priv)->reg_lock);
1566         spin_lock_init(&priv->statistics.lock);
1567
1568         /***********************
1569          * 2. Read REV register
1570          ***********************/
1571         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1572                 cfg(priv)->name, trans(priv)->hw_rev);
1573
1574         if (iwl_trans_start_hw(trans(priv)))
1575                 goto out_free_traffic_mem;
1576
1577         /*****************
1578          * 3. Read EEPROM
1579          *****************/
1580         /* Read the EEPROM */
1581         if (iwl_eeprom_init(trans(priv), trans(priv)->hw_rev)) {
1582                 IWL_ERR(priv, "Unable to init EEPROM\n");
1583                 goto out_free_traffic_mem;
1584         }
1585         /* Reset chip to save power until we load uCode during "up". */
1586         iwl_trans_stop_hw(trans(priv));
1587
1588         if (iwl_eeprom_check_version(priv))
1589                 goto out_free_eeprom;
1590
1591         if (iwl_eeprom_init_hw_params(priv))
1592                 goto out_free_eeprom;
1593
1594         /* extract MAC Address */
1595         iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1596         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1597         priv->hw->wiphy->addresses = priv->addresses;
1598         priv->hw->wiphy->n_addresses = 1;
1599         num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1600         if (num_mac > 1) {
1601                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1602                        ETH_ALEN);
1603                 priv->addresses[1].addr[5]++;
1604                 priv->hw->wiphy->n_addresses++;
1605         }
1606
1607         /************************
1608          * 4. Setup HW constants
1609          ************************/
1610         iwl_set_hw_params(priv);
1611
1612         if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1613                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1614                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1615                 /*
1616                  * if not PAN, then don't support P2P -- might be a uCode
1617                  * packaging bug or due to the eeprom check above
1618                  */
1619                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1620                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1621                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1622                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1623                 trans_cfg.n_queue_to_fifo =
1624                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1625                 q_to_ac = iwlagn_bss_queue_to_ac;
1626                 n_q_to_ac = ARRAY_SIZE(iwlagn_bss_queue_to_ac);
1627
1628                 /* Configure transport layer again*/
1629                 iwl_trans_configure(trans(priv), &trans_cfg);
1630         }
1631
1632         /*******************
1633          * 5. Setup priv
1634          *******************/
1635         for (i = 0; i < IEEE80211_NUM_ACS; i++)
1636                 atomic_set(&priv->ac_stop_count[i], 0);
1637
1638         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1639                 if (i < n_q_to_ac)
1640                         priv->queue_to_ac[i] = q_to_ac[i];
1641                 else
1642                         priv->queue_to_ac[i] = IWL_INVALID_AC;
1643         }
1644
1645         WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1646                                                 IWLAGN_CMD_FIFO_NUM);
1647
1648         if (iwl_init_drv(priv))
1649                 goto out_free_eeprom;
1650
1651         /* At this point both hw and priv are initialized. */
1652
1653         /********************
1654          * 6. Setup services
1655          ********************/
1656         iwl_setup_deferred_work(priv);
1657         iwl_setup_rx_handlers(priv);
1658         iwl_testmode_init(priv);
1659
1660         iwl_power_initialize(priv);
1661         iwl_tt_initialize(priv);
1662
1663         snprintf(priv->hw->wiphy->fw_version,
1664                  sizeof(priv->hw->wiphy->fw_version),
1665                  "%s", fw->fw_version);
1666
1667         priv->new_scan_threshold_behaviour =
1668                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1669
1670         priv->phy_calib_chain_noise_reset_cmd =
1671                 fw->ucode_capa.standard_phy_calibration_size;
1672         priv->phy_calib_chain_noise_gain_cmd =
1673                 fw->ucode_capa.standard_phy_calibration_size + 1;
1674
1675         /* initialize all valid contexts */
1676         iwl_init_context(priv, ucode_flags);
1677
1678         /**************************************************
1679          * This is still part of probe() in a sense...
1680          *
1681          * 7. Setup and register with mac80211 and debugfs
1682          **************************************************/
1683         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1684                 goto out_destroy_workqueue;
1685
1686         if (iwl_dbgfs_register(priv, DRV_NAME))
1687                 IWL_ERR(priv,
1688                         "failed to create debugfs files. Ignoring error\n");
1689
1690         return op_mode;
1691
1692 out_destroy_workqueue:
1693         destroy_workqueue(priv->workqueue);
1694         priv->workqueue = NULL;
1695         iwl_uninit_drv(priv);
1696 out_free_eeprom:
1697         iwl_eeprom_free(priv->shrd);
1698 out_free_traffic_mem:
1699         iwl_free_traffic_mem(priv);
1700         ieee80211_free_hw(priv->hw);
1701 out:
1702         op_mode = NULL;
1703         return op_mode;
1704 }
1705
1706 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1707 {
1708         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1709
1710         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1711
1712         iwl_dbgfs_unregister(priv);
1713
1714         iwl_testmode_cleanup(priv);
1715         iwlagn_mac_unregister(priv);
1716
1717         iwl_tt_exit(priv);
1718
1719         /*This will stop the queues, move the device to low power state */
1720         priv->ucode_loaded = false;
1721         iwl_trans_stop_device(trans(priv));
1722
1723         iwl_eeprom_free(priv->shrd);
1724
1725         /*netif_stop_queue(dev); */
1726         flush_workqueue(priv->workqueue);
1727
1728         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1729          * priv->workqueue... so we can't take down the workqueue
1730          * until now... */
1731         destroy_workqueue(priv->workqueue);
1732         priv->workqueue = NULL;
1733         iwl_free_traffic_mem(priv);
1734
1735         iwl_uninit_drv(priv);
1736
1737         dev_kfree_skb(priv->beacon_skb);
1738
1739         ieee80211_free_hw(priv->hw);
1740 }
1741
1742 static const char * const desc_lookup_text[] = {
1743         "OK",
1744         "FAIL",
1745         "BAD_PARAM",
1746         "BAD_CHECKSUM",
1747         "NMI_INTERRUPT_WDG",
1748         "SYSASSERT",
1749         "FATAL_ERROR",
1750         "BAD_COMMAND",
1751         "HW_ERROR_TUNE_LOCK",
1752         "HW_ERROR_TEMPERATURE",
1753         "ILLEGAL_CHAN_FREQ",
1754         "VCC_NOT_STABLE",
1755         "FH_ERROR",
1756         "NMI_INTERRUPT_HOST",
1757         "NMI_INTERRUPT_ACTION_PT",
1758         "NMI_INTERRUPT_UNKNOWN",
1759         "UCODE_VERSION_MISMATCH",
1760         "HW_ERROR_ABS_LOCK",
1761         "HW_ERROR_CAL_LOCK_FAIL",
1762         "NMI_INTERRUPT_INST_ACTION_PT",
1763         "NMI_INTERRUPT_DATA_ACTION_PT",
1764         "NMI_TRM_HW_ER",
1765         "NMI_INTERRUPT_TRM",
1766         "NMI_INTERRUPT_BREAK_POINT",
1767         "DEBUG_0",
1768         "DEBUG_1",
1769         "DEBUG_2",
1770         "DEBUG_3",
1771 };
1772
1773 static struct { char *name; u8 num; } advanced_lookup[] = {
1774         { "NMI_INTERRUPT_WDG", 0x34 },
1775         { "SYSASSERT", 0x35 },
1776         { "UCODE_VERSION_MISMATCH", 0x37 },
1777         { "BAD_COMMAND", 0x38 },
1778         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1779         { "FATAL_ERROR", 0x3D },
1780         { "NMI_TRM_HW_ERR", 0x46 },
1781         { "NMI_INTERRUPT_TRM", 0x4C },
1782         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1783         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1784         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1785         { "NMI_INTERRUPT_HOST", 0x66 },
1786         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1787         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1788         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1789         { "ADVANCED_SYSASSERT", 0 },
1790 };
1791
1792 static const char *desc_lookup(u32 num)
1793 {
1794         int i;
1795         int max = ARRAY_SIZE(desc_lookup_text);
1796
1797         if (num < max)
1798                 return desc_lookup_text[num];
1799
1800         max = ARRAY_SIZE(advanced_lookup) - 1;
1801         for (i = 0; i < max; i++) {
1802                 if (advanced_lookup[i].num == num)
1803                         break;
1804         }
1805         return advanced_lookup[i].name;
1806 }
1807
1808 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1809 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1810
1811 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1812 {
1813         struct iwl_trans *trans = trans(priv);
1814         u32 base;
1815         struct iwl_error_event_table table;
1816
1817         base = priv->device_pointers.error_event_table;
1818         if (priv->cur_ucode == IWL_UCODE_INIT) {
1819                 if (!base)
1820                         base = priv->shrd->fw->init_errlog_ptr;
1821         } else {
1822                 if (!base)
1823                         base = priv->shrd->fw->inst_errlog_ptr;
1824         }
1825
1826         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1827                 IWL_ERR(priv,
1828                         "Not valid error log pointer 0x%08X for %s uCode\n",
1829                         base,
1830                         (priv->cur_ucode == IWL_UCODE_INIT)
1831                                         ? "Init" : "RT");
1832                 return;
1833         }
1834
1835         /*TODO: Update dbgfs with ISR error stats obtained below */
1836         iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1837
1838         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1839                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1840                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1841                         priv->shrd->status, table.valid);
1842         }
1843
1844         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1845                                       table.data1, table.data2, table.line,
1846                                       table.blink1, table.blink2, table.ilink1,
1847                                       table.ilink2, table.bcon_time, table.gp1,
1848                                       table.gp2, table.gp3, table.ucode_ver,
1849                                       table.hw_ver, table.brd_ver);
1850         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1851                 desc_lookup(table.error_id));
1852         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1853         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1854         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1855         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1856         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1857         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1858         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1859         IWL_ERR(priv, "0x%08X | line\n", table.line);
1860         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1861         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1862         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1863         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1864         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1865         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1866         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1867         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1868         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1869         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1870         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1871         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1872         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1873         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1874         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1875         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1876         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1877         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1878         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1879         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1880         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1881         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1882         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1883         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1884 }
1885
1886 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1887
1888 /**
1889  * iwl_print_event_log - Dump error event log to syslog
1890  *
1891  */
1892 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1893                                u32 num_events, u32 mode,
1894                                int pos, char **buf, size_t bufsz)
1895 {
1896         u32 i;
1897         u32 base;       /* SRAM byte address of event log header */
1898         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1899         u32 ptr;        /* SRAM byte address of log data */
1900         u32 ev, time, data; /* event log data */
1901         unsigned long reg_flags;
1902
1903         struct iwl_trans *trans = trans(priv);
1904
1905         if (num_events == 0)
1906                 return pos;
1907
1908         base = priv->device_pointers.log_event_table;
1909         if (priv->cur_ucode == IWL_UCODE_INIT) {
1910                 if (!base)
1911                         base = priv->shrd->fw->init_evtlog_ptr;
1912         } else {
1913                 if (!base)
1914                         base = priv->shrd->fw->inst_evtlog_ptr;
1915         }
1916
1917         if (mode == 0)
1918                 event_size = 2 * sizeof(u32);
1919         else
1920                 event_size = 3 * sizeof(u32);
1921
1922         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1923
1924         /* Make sure device is powered up for SRAM reads */
1925         spin_lock_irqsave(&trans->reg_lock, reg_flags);
1926         if (unlikely(!iwl_grab_nic_access(trans)))
1927                 goto out_unlock;
1928
1929         /* Set starting address; reads will auto-increment */
1930         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1931
1932         /* "time" is actually "data" for mode 0 (no timestamp).
1933         * place event id # at far right for easier visual parsing. */
1934         for (i = 0; i < num_events; i++) {
1935                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1936                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1937                 if (mode == 0) {
1938                         /* data, ev */
1939                         if (bufsz) {
1940                                 pos += scnprintf(*buf + pos, bufsz - pos,
1941                                                 "EVT_LOG:0x%08x:%04u\n",
1942                                                 time, ev);
1943                         } else {
1944                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1945                                         time, ev);
1946                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1947                                         time, ev);
1948                         }
1949                 } else {
1950                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1951                         if (bufsz) {
1952                                 pos += scnprintf(*buf + pos, bufsz - pos,
1953                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1954                                                  time, data, ev);
1955                         } else {
1956                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1957                                         time, data, ev);
1958                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1959                                         data, ev);
1960                         }
1961                 }
1962         }
1963
1964         /* Allow device to power down */
1965         iwl_release_nic_access(trans);
1966 out_unlock:
1967         spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1968         return pos;
1969 }
1970
1971 /**
1972  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1973  */
1974 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1975                                     u32 num_wraps, u32 next_entry,
1976                                     u32 size, u32 mode,
1977                                     int pos, char **buf, size_t bufsz)
1978 {
1979         /*
1980          * display the newest DEFAULT_LOG_ENTRIES entries
1981          * i.e the entries just before the next ont that uCode would fill.
1982          */
1983         if (num_wraps) {
1984                 if (next_entry < size) {
1985                         pos = iwl_print_event_log(priv,
1986                                                 capacity - (size - next_entry),
1987                                                 size - next_entry, mode,
1988                                                 pos, buf, bufsz);
1989                         pos = iwl_print_event_log(priv, 0,
1990                                                   next_entry, mode,
1991                                                   pos, buf, bufsz);
1992                 } else
1993                         pos = iwl_print_event_log(priv, next_entry - size,
1994                                                   size, mode, pos, buf, bufsz);
1995         } else {
1996                 if (next_entry < size) {
1997                         pos = iwl_print_event_log(priv, 0, next_entry,
1998                                                   mode, pos, buf, bufsz);
1999                 } else {
2000                         pos = iwl_print_event_log(priv, next_entry - size,
2001                                                   size, mode, pos, buf, bufsz);
2002                 }
2003         }
2004         return pos;
2005 }
2006
2007 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2008
2009 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2010                             char **buf, bool display)
2011 {
2012         u32 base;       /* SRAM byte address of event log header */
2013         u32 capacity;   /* event log capacity in # entries */
2014         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2015         u32 num_wraps;  /* # times uCode wrapped to top of log */
2016         u32 next_entry; /* index of next entry to be written by uCode */
2017         u32 size;       /* # entries that we'll print */
2018         u32 logsize;
2019         int pos = 0;
2020         size_t bufsz = 0;
2021         struct iwl_trans *trans = trans(priv);
2022
2023         base = priv->device_pointers.log_event_table;
2024         if (priv->cur_ucode == IWL_UCODE_INIT) {
2025                 logsize = priv->shrd->fw->init_evtlog_size;
2026                 if (!base)
2027                         base = priv->shrd->fw->init_evtlog_ptr;
2028         } else {
2029                 logsize = priv->shrd->fw->inst_evtlog_size;
2030                 if (!base)
2031                         base = priv->shrd->fw->inst_evtlog_ptr;
2032         }
2033
2034         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2035                 IWL_ERR(priv,
2036                         "Invalid event log pointer 0x%08X for %s uCode\n",
2037                         base,
2038                         (priv->cur_ucode == IWL_UCODE_INIT)
2039                                         ? "Init" : "RT");
2040                 return -EINVAL;
2041         }
2042
2043         /* event log header */
2044         capacity = iwl_read_targ_mem(trans, base);
2045         mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2046         num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2047         next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2048
2049         if (capacity > logsize) {
2050                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2051                         "entries\n", capacity, logsize);
2052                 capacity = logsize;
2053         }
2054
2055         if (next_entry > logsize) {
2056                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2057                         next_entry, logsize);
2058                 next_entry = logsize;
2059         }
2060
2061         size = num_wraps ? capacity : next_entry;
2062
2063         /* bail out if nothing in log */
2064         if (size == 0) {
2065                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2066                 return pos;
2067         }
2068
2069 #ifdef CONFIG_IWLWIFI_DEBUG
2070         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2071                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2072                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2073 #else
2074         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2075                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2076 #endif
2077         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2078                 size);
2079
2080 #ifdef CONFIG_IWLWIFI_DEBUG
2081         if (display) {
2082                 if (full_log)
2083                         bufsz = capacity * 48;
2084                 else
2085                         bufsz = size * 48;
2086                 *buf = kmalloc(bufsz, GFP_KERNEL);
2087                 if (!*buf)
2088                         return -ENOMEM;
2089         }
2090         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2091                 /*
2092                  * if uCode has wrapped back to top of log,
2093                  * start at the oldest entry,
2094                  * i.e the next one that uCode would fill.
2095                  */
2096                 if (num_wraps)
2097                         pos = iwl_print_event_log(priv, next_entry,
2098                                                 capacity - next_entry, mode,
2099                                                 pos, buf, bufsz);
2100                 /* (then/else) start at top of log */
2101                 pos = iwl_print_event_log(priv, 0,
2102                                           next_entry, mode, pos, buf, bufsz);
2103         } else
2104                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2105                                                 next_entry, size, mode,
2106                                                 pos, buf, bufsz);
2107 #else
2108         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2109                                         next_entry, size, mode,
2110                                         pos, buf, bufsz);
2111 #endif
2112         return pos;
2113 }
2114
2115 static void iwl_nic_error(struct iwl_op_mode *op_mode)
2116 {
2117         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2118
2119         IWL_ERR(priv, "Loaded firmware version: %s\n",
2120                 priv->shrd->fw->fw_version);
2121
2122         iwl_dump_nic_error_log(priv);
2123         iwl_dump_nic_event_log(priv, false, NULL, false);
2124
2125         iwlagn_fw_error(priv, false);
2126 }
2127
2128 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2129 {
2130         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2131
2132         if (!iwl_check_for_ct_kill(priv)) {
2133                 IWL_ERR(priv, "Restarting adapter queue is full\n");
2134                 iwlagn_fw_error(priv, false);
2135         }
2136 }
2137
2138 static void iwl_nic_config(struct iwl_op_mode *op_mode)
2139 {
2140         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2141
2142         cfg(priv)->lib->nic_config(priv);
2143 }
2144
2145 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2146 {
2147         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2148         int ac = priv->queue_to_ac[queue];
2149
2150         if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2151                 return;
2152
2153         if (atomic_inc_return(&priv->ac_stop_count[ac]) > 1) {
2154                 IWL_DEBUG_TX_QUEUES(priv,
2155                         "queue %d (AC %d) already stopped\n",
2156                         queue, ac);
2157                 return;
2158         }
2159
2160         set_bit(ac, &priv->transport_queue_stop);
2161         ieee80211_stop_queue(priv->hw, ac);
2162 }
2163
2164 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2165 {
2166         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2167         int ac = priv->queue_to_ac[queue];
2168
2169         if (WARN_ON_ONCE(ac == IWL_INVALID_AC))
2170                 return;
2171
2172         if (atomic_dec_return(&priv->ac_stop_count[ac]) > 0) {
2173                 IWL_DEBUG_TX_QUEUES(priv,
2174                         "queue %d (AC %d) already awake\n",
2175                         queue, ac);
2176                 return;
2177         }
2178
2179         clear_bit(ac, &priv->transport_queue_stop);
2180
2181         if (!priv->passive_no_rx)
2182                 ieee80211_wake_queue(priv->hw, ac);
2183 }
2184
2185 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2186 {
2187         int ac;
2188
2189         if (!priv->passive_no_rx)
2190                 return;
2191
2192         for (ac = IEEE80211_AC_VO; ac < IEEE80211_NUM_ACS; ac++) {
2193                 if (!test_bit(ac, &priv->transport_queue_stop)) {
2194                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d");
2195                         ieee80211_wake_queue(priv->hw, ac);
2196                 } else {
2197                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d");
2198                 }
2199         }
2200
2201         priv->passive_no_rx = false;
2202 }
2203
2204 const struct iwl_op_mode_ops iwl_dvm_ops = {
2205         .start = iwl_op_mode_dvm_start,
2206         .stop = iwl_op_mode_dvm_stop,
2207         .rx = iwl_rx_dispatch,
2208         .queue_full = iwl_stop_sw_queue,
2209         .queue_not_full = iwl_wake_sw_queue,
2210         .hw_rf_kill = iwl_set_hw_rfkill_state,
2211         .free_skb = iwl_free_skb,
2212         .nic_error = iwl_nic_error,
2213         .cmd_queue_full = iwl_cmd_queue_full,
2214         .nic_config = iwl_nic_config,
2215 };
2216
2217 /*****************************************************************************
2218  *
2219  * driver and module entry point
2220  *
2221  *****************************************************************************/
2222
2223 struct kmem_cache *iwl_tx_cmd_pool;
2224
2225 static int __init iwl_init(void)
2226 {
2227
2228         int ret;
2229         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2230         pr_info(DRV_COPYRIGHT "\n");
2231
2232         iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2233                                             sizeof(struct iwl_device_cmd),
2234                                             sizeof(void *), 0, NULL);
2235         if (!iwl_tx_cmd_pool)
2236                 return -ENOMEM;
2237
2238         ret = iwlagn_rate_control_register();
2239         if (ret) {
2240                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2241                 goto error_rc_register;
2242         }
2243
2244         ret = iwl_pci_register_driver();
2245         if (ret)
2246                 goto error_pci_register;
2247         return ret;
2248
2249 error_pci_register:
2250         iwlagn_rate_control_unregister();
2251 error_rc_register:
2252         kmem_cache_destroy(iwl_tx_cmd_pool);
2253         return ret;
2254 }
2255
2256 static void __exit iwl_exit(void)
2257 {
2258         iwl_pci_unregister_driver();
2259         iwlagn_rate_control_unregister();
2260         kmem_cache_destroy(iwl_tx_cmd_pool);
2261 }
2262
2263 module_exit(iwl_exit);
2264 module_init(iwl_init);
2265
2266 #ifdef CONFIG_IWLWIFI_DEBUG
2267 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
2268                    S_IRUGO | S_IWUSR);
2269 MODULE_PARM_DESC(debug, "debug output mask");
2270 #endif
2271
2272 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
2273 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2274 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
2275 MODULE_PARM_DESC(11n_disable,
2276         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
2277 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2278                    int, S_IRUGO);
2279 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2280 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2281 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2282
2283 module_param_named(ucode_alternative,
2284                    iwlagn_mod_params.wanted_ucode_alternative,
2285                    int, S_IRUGO);
2286 MODULE_PARM_DESC(ucode_alternative,
2287                  "specify ucode alternative to use from ucode file");
2288
2289 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2290                    int, S_IRUGO);
2291 MODULE_PARM_DESC(antenna_coupling,
2292                  "specify antenna coupling in dB (defualt: 0 dB)");
2293
2294 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2295                    bool, S_IRUGO);
2296 MODULE_PARM_DESC(bt_ch_inhibition,
2297                  "Enable BT channel inhibition (default: enable)");
2298
2299 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2300 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2301
2302 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2303 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2304
2305 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2306 MODULE_PARM_DESC(wd_disable,
2307                 "Disable stuck queue watchdog timer 0=system default, "
2308                 "1=disable, 2=enable (default: 0)");
2309
2310 /*
2311  * set bt_coex_active to true, uCode will do kill/defer
2312  * every time the priority line is asserted (BT is sending signals on the
2313  * priority line in the PCIx).
2314  * set bt_coex_active to false, uCode will ignore the BT activity and
2315  * perform the normal operation
2316  *
2317  * User might experience transmit issue on some platform due to WiFi/BT
2318  * co-exist problem. The possible behaviors are:
2319  *   Able to scan and finding all the available AP
2320  *   Not able to associate with any AP
2321  * On those platforms, WiFi communication can be restored by set
2322  * "bt_coex_active" module parameter to "false"
2323  *
2324  * default: bt_coex_active = true (BT_COEX_ENABLE)
2325  */
2326 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2327                 bool, S_IRUGO);
2328 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2329
2330 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2331 MODULE_PARM_DESC(led_mode, "0=system default, "
2332                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
2333
2334 module_param_named(power_save, iwlagn_mod_params.power_save,
2335                 bool, S_IRUGO);
2336 MODULE_PARM_DESC(power_save,
2337                  "enable WiFi power management (default: disable)");
2338
2339 module_param_named(power_level, iwlagn_mod_params.power_level,
2340                 int, S_IRUGO);
2341 MODULE_PARM_DESC(power_level,
2342                  "default power save level (range from 1 - 5, default: 1)");
2343
2344 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2345                 bool, S_IRUGO);
2346 MODULE_PARM_DESC(auto_agg,
2347                  "enable agg w/o check traffic load (default: enable)");
2348
2349 /*
2350  * For now, keep using power level 1 instead of automatically
2351  * adjusting ...
2352  */
2353 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2354                 bool, S_IRUGO);
2355 MODULE_PARM_DESC(no_sleep_autoadjust,
2356                  "don't automatically adjust sleep level "
2357                  "according to maximum network latency (default: true)");