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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/slab.h>
  36 #include <linux/delay.h>
  37 #include <linux/sched.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-io.h"
  50 #include "iwl-agn-calib.h"
  51 #include "iwl-agn.h"
  52 #include "iwl-trans.h"
  53 #include "iwl-op-mode.h"
  54 #include "iwl-drv.h"
  55 #include "iwl-modparams.h"
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  */
  66 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  67
  68 #ifdef CONFIG_IWLWIFI_DEBUG
  69 #define VD "d"
  70 #else
  71 #define VD
  72 #endif
  73
  74 #define DRV_VERSION     IWLWIFI_VERSION VD
  75
  76
  77 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  78 MODULE_VERSION(DRV_VERSION);
  79 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  80 MODULE_LICENSE("GPL");
  81 MODULE_ALIAS("iwlagn");
  82
  83 void iwl_update_chain_flags(struct iwl_priv *priv)
  84 {
  85         struct iwl_rxon_context *ctx;
  86
  87         for_each_context(priv, ctx) {
  88                 iwlagn_set_rxon_chain(priv, ctx);
  89                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  90                         iwlagn_commit_rxon(priv, ctx);
  91         }
  92 }
  93
  94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  96                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  97                                u8 *beacon, u32 frame_size)
  98 {
  99         u16 tim_idx;
 100         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 101
 102         /*
 103          * The index is relative to frame start but we start looking at the
 104          * variable-length part of the beacon.
 105          */
 106         tim_idx = mgmt->u.beacon.variable - beacon;
 107
 108         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 109         while ((tim_idx < (frame_size - 2)) &&
 110                         (beacon[tim_idx] != WLAN_EID_TIM))
 111                 tim_idx += beacon[tim_idx+1] + 2;
 112
 113         /* If TIM field was found, set variables */
 114         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 115                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 116                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 117         } else
 118                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 119 }
 120
 121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 122 {
 123         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 124         struct iwl_host_cmd cmd = {
 125                 .id = REPLY_TX_BEACON,
 126                 .flags = CMD_SYNC,
 127         };
 128         struct ieee80211_tx_info *info;
 129         u32 frame_size;
 130         u32 rate_flags;
 131         u32 rate;
 132
 133         /*
 134          * We have to set up the TX command, the TX Beacon command, and the
 135          * beacon contents.
 136          */
 137
 138         lockdep_assert_held(&priv->mutex);
 139
 140         if (!priv->beacon_ctx) {
 141                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 142                 return 0;
 143         }
 144
 145         if (WARN_ON(!priv->beacon_skb))
 146                 return -EINVAL;
 147
 148         /* Allocate beacon command */
 149         if (!priv->beacon_cmd)
 150                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 151         tx_beacon_cmd = priv->beacon_cmd;
 152         if (!tx_beacon_cmd)
 153                 return -ENOMEM;
 154
 155         frame_size = priv->beacon_skb->len;
 156
 157         /* Set up TX command fields */
 158         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 159         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 160         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 161         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 162                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 163
 164         /* Set up TX beacon command fields */
 165         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 166                            frame_size);
 167
 168         /* Set up packet rate and flags */
 169         info = IEEE80211_SKB_CB(priv->beacon_skb);
 170
 171         /*
 172          * Let's set up the rate at least somewhat correctly;
 173          * it will currently not actually be used by the uCode,
 174          * it uses the broadcast station's rate instead.
 175          */
 176         if (info->control.rates[0].idx < 0 ||
 177             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 178                 rate = 0;
 179         else
 180                 rate = info->control.rates[0].idx;
 181
 182         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 183                                               priv->hw_params.valid_tx_ant);
 184         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 185
 186         /* In mac80211, rates for 5 GHz start at 0 */
 187         if (info->band == IEEE80211_BAND_5GHZ)
 188                 rate += IWL_FIRST_OFDM_RATE;
 189         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 190                 rate_flags |= RATE_MCS_CCK_MSK;
 191
 192         tx_beacon_cmd->tx.rate_n_flags =
 193                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 194
 195         /* Submit command */
 196         cmd.len[0] = sizeof(*tx_beacon_cmd);
 197         cmd.data[0] = tx_beacon_cmd;
 198         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 199         cmd.len[1] = frame_size;
 200         cmd.data[1] = priv->beacon_skb->data;
 201         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 202
 203         return iwl_dvm_send_cmd(priv, &cmd);
 204 }
 205
 206 static void iwl_bg_beacon_update(struct work_struct *work)
 207 {
 208         struct iwl_priv *priv =
 209                 container_of(work, struct iwl_priv, beacon_update);
 210         struct sk_buff *beacon;
 211
 212         mutex_lock(&priv->mutex);
 213         if (!priv->beacon_ctx) {
 214                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 215                 goto out;
 216         }
 217
 218         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 219                 /*
 220                  * The ucode will send beacon notifications even in
 221                  * IBSS mode, but we don't want to process them. But
 222                  * we need to defer the type check to here due to
 223                  * requiring locking around the beacon_ctx access.
 224                  */
 225                 goto out;
 226         }
 227
 228         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 229         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 230         if (!beacon) {
 231                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 232                 goto out;
 233         }
 234
 235         /* new beacon skb is allocated every time; dispose previous.*/
 236         dev_kfree_skb(priv->beacon_skb);
 237
 238         priv->beacon_skb = beacon;
 239
 240         iwlagn_send_beacon_cmd(priv);
 241  out:
 242         mutex_unlock(&priv->mutex);
 243 }
 244
 245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 246 {
 247         struct iwl_priv *priv =
 248                 container_of(work, struct iwl_priv, bt_runtime_config);
 249
 250         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 251                 return;
 252
 253         /* dont send host command if rf-kill is on */
 254         if (!iwl_is_ready_rf(priv))
 255                 return;
 256         iwlagn_send_advance_bt_config(priv);
 257 }
 258
 259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 260 {
 261         struct iwl_priv *priv =
 262                 container_of(work, struct iwl_priv, bt_full_concurrency);
 263         struct iwl_rxon_context *ctx;
 264
 265         mutex_lock(&priv->mutex);
 266
 267         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 268                 goto out;
 269
 270         /* dont send host command if rf-kill is on */
 271         if (!iwl_is_ready_rf(priv))
 272                 goto out;
 273
 274         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 275                        priv->bt_full_concurrent ?
 276                        "full concurrency" : "3-wire");
 277
 278         /*
 279          * LQ & RXON updated cmds must be sent before BT Config cmd
 280          * to avoid 3-wire collisions
 281          */
 282         for_each_context(priv, ctx) {
 283                 iwlagn_set_rxon_chain(priv, ctx);
 284                 iwlagn_commit_rxon(priv, ctx);
 285         }
 286
 287         iwlagn_send_advance_bt_config(priv);
 288 out:
 289         mutex_unlock(&priv->mutex);
 290 }
 291
 292 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 293 {
 294         struct iwl_statistics_cmd statistics_cmd = {
 295                 .configuration_flags =
 296                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 297         };
 298
 299         if (flags & CMD_ASYNC)
 300                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 301                                         CMD_ASYNC,
 302                                         sizeof(struct iwl_statistics_cmd),
 303                                         &statistics_cmd);
 304         else
 305                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 306                                         CMD_SYNC,
 307                                         sizeof(struct iwl_statistics_cmd),
 308                                         &statistics_cmd);
 309 }
 310
 311 /**
 312  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 313  *
 314  * This callback is provided in order to send a statistics request.
 315  *
 316  * This timer function is continually reset to execute within
 317  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 318  * was received.  We need to ensure we receive the statistics in order
 319  * to update the temperature used for calibrating the TXPOWER.
 320  */
 321 static void iwl_bg_statistics_periodic(unsigned long data)
 322 {
 323         struct iwl_priv *priv = (struct iwl_priv *)data;
 324
 325         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 326                 return;
 327
 328         /* dont send host command if rf-kill is on */
 329         if (!iwl_is_ready_rf(priv))
 330                 return;
 331
 332         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 333 }
 334
 335
 336 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 337                                         u32 start_idx, u32 num_events,
 338                                         u32 capacity, u32 mode)
 339 {
 340         u32 i;
 341         u32 ptr;        /* SRAM byte address of log data */
 342         u32 ev, time, data; /* event log data */
 343         unsigned long reg_flags;
 344
 345         if (mode == 0)
 346                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 347         else
 348                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 349
 350         /* Make sure device is powered up for SRAM reads */
 351         spin_lock_irqsave(&priv->trans->reg_lock, reg_flags);
 352         if (unlikely(!iwl_grab_nic_access(priv->trans))) {
 353                 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
 354                 return;
 355         }
 356
 357         /* Set starting address; reads will auto-increment */
 358         iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 359
 360         /*
 361          * Refuse to read more than would have fit into the log from
 362          * the current start_idx. This used to happen due to the race
 363          * described below, but now WARN because the code below should
 364          * prevent it from happening here.
 365          */
 366         if (WARN_ON(num_events > capacity - start_idx))
 367                 num_events = capacity - start_idx;
 368
 369         /*
 370          * "time" is actually "data" for mode 0 (no timestamp).
 371          * place event id # at far right for easier visual parsing.
 372          */
 373         for (i = 0; i < num_events; i++) {
 374                 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 375                 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 376                 if (mode == 0) {
 377                         trace_iwlwifi_dev_ucode_cont_event(
 378                                         priv->trans->dev, 0, time, ev);
 379                 } else {
 380                         data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 381                         trace_iwlwifi_dev_ucode_cont_event(
 382                                         priv->trans->dev, time, data, ev);
 383                 }
 384         }
 385         /* Allow device to power down */
 386         iwl_release_nic_access(priv->trans);
 387         spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
 388 }
 389
 390 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 391 {
 392         u32 capacity;   /* event log capacity in # entries */
 393         struct {
 394                 u32 capacity;
 395                 u32 mode;
 396                 u32 wrap_counter;
 397                 u32 write_counter;
 398         } __packed read;
 399         u32 base;       /* SRAM byte address of event log header */
 400         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 401         u32 num_wraps;  /* # times uCode wrapped to top of log */
 402         u32 next_entry; /* index of next entry to be written by uCode */
 403
 404         base = priv->device_pointers.log_event_table;
 405         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 406                 iwl_read_targ_mem_words(priv->trans, base, &read, sizeof(read));
 407                 capacity = read.capacity;
 408                 mode = read.mode;
 409                 num_wraps = read.wrap_counter;
 410                 next_entry = read.write_counter;
 411         } else
 412                 return;
 413
 414         /*
 415          * Unfortunately, the uCode doesn't use temporary variables.
 416          * Therefore, it can happen that we read next_entry == capacity,
 417          * which really means next_entry == 0.
 418          */
 419         if (unlikely(next_entry == capacity))
 420                 next_entry = 0;
 421         /*
 422          * Additionally, the uCode increases the write pointer before
 423          * the wraps counter, so if the write pointer is smaller than
 424          * the old write pointer (wrap occurred) but we read that no
 425          * wrap occurred, we actually read between the next_entry and
 426          * num_wraps update (this does happen in practice!!) -- take
 427          * that into account by increasing num_wraps.
 428          */
 429         if (unlikely(next_entry < priv->event_log.next_entry &&
 430                      num_wraps == priv->event_log.num_wraps))
 431                 num_wraps++;
 432
 433         if (num_wraps == priv->event_log.num_wraps) {
 434                 iwl_print_cont_event_trace(
 435                         priv, base, priv->event_log.next_entry,
 436                         next_entry - priv->event_log.next_entry,
 437                         capacity, mode);
 438
 439                 priv->event_log.non_wraps_count++;
 440         } else {
 441                 if (num_wraps - priv->event_log.num_wraps > 1)
 442                         priv->event_log.wraps_more_count++;
 443                 else
 444                         priv->event_log.wraps_once_count++;
 445
 446                 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 447                                 num_wraps - priv->event_log.num_wraps,
 448                                 next_entry, priv->event_log.next_entry);
 449
 450                 if (next_entry < priv->event_log.next_entry) {
 451                         iwl_print_cont_event_trace(
 452                                 priv, base, priv->event_log.next_entry,
 453                                 capacity - priv->event_log.next_entry,
 454                                 capacity, mode);
 455
 456                         iwl_print_cont_event_trace(
 457                                 priv, base, 0, next_entry, capacity, mode);
 458                 } else {
 459                         iwl_print_cont_event_trace(
 460                                 priv, base, next_entry,
 461                                 capacity - next_entry,
 462                                 capacity, mode);
 463
 464                         iwl_print_cont_event_trace(
 465                                 priv, base, 0, next_entry, capacity, mode);
 466                 }
 467         }
 468
 469         priv->event_log.num_wraps = num_wraps;
 470         priv->event_log.next_entry = next_entry;
 471 }
 472
 473 /**
 474  * iwl_bg_ucode_trace - Timer callback to log ucode event
 475  *
 476  * The timer is continually set to execute every
 477  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 478  * this function is to perform continuous uCode event logging operation
 479  * if enabled
 480  */
 481 static void iwl_bg_ucode_trace(unsigned long data)
 482 {
 483         struct iwl_priv *priv = (struct iwl_priv *)data;
 484
 485         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 486                 return;
 487
 488         if (priv->event_log.ucode_trace) {
 489                 iwl_continuous_event_trace(priv);
 490                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 491                 mod_timer(&priv->ucode_trace,
 492                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 493         }
 494 }
 495
 496 static void iwl_bg_tx_flush(struct work_struct *work)
 497 {
 498         struct iwl_priv *priv =
 499                 container_of(work, struct iwl_priv, tx_flush);
 500
 501         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 502                 return;
 503
 504         /* do nothing if rf-kill is on */
 505         if (!iwl_is_ready_rf(priv))
 506                 return;
 507
 508         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 509         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 510 }
 511
 512 /*
 513  * queue/FIFO/AC mapping definitions
 514  */
 515
 516 #define IWL_TX_FIFO_BK          0       /* shared */
 517 #define IWL_TX_FIFO_BE          1
 518 #define IWL_TX_FIFO_VI          2       /* shared */
 519 #define IWL_TX_FIFO_VO          3
 520 #define IWL_TX_FIFO_BK_IPAN     IWL_TX_FIFO_BK
 521 #define IWL_TX_FIFO_BE_IPAN     4
 522 #define IWL_TX_FIFO_VI_IPAN     IWL_TX_FIFO_VI
 523 #define IWL_TX_FIFO_VO_IPAN     5
 524 /* re-uses the VO FIFO, uCode will properly flush/schedule */
 525 #define IWL_TX_FIFO_AUX         5
 526 #define IWL_TX_FIFO_UNUSED      -1
 527
 528 #define IWLAGN_CMD_FIFO_NUM     7
 529
 530 /*
 531  * This queue number is required for proper operation
 532  * because the ucode will stop/start the scheduler as
 533  * required.
 534  */
 535 #define IWL_IPAN_MCAST_QUEUE    8
 536
 537 static const u8 iwlagn_default_queue_to_tx_fifo[] = {
 538         IWL_TX_FIFO_VO,
 539         IWL_TX_FIFO_VI,
 540         IWL_TX_FIFO_BE,
 541         IWL_TX_FIFO_BK,
 542         IWLAGN_CMD_FIFO_NUM,
 543 };
 544
 545 static const u8 iwlagn_ipan_queue_to_tx_fifo[] = {
 546         IWL_TX_FIFO_VO,
 547         IWL_TX_FIFO_VI,
 548         IWL_TX_FIFO_BE,
 549         IWL_TX_FIFO_BK,
 550         IWL_TX_FIFO_BK_IPAN,
 551         IWL_TX_FIFO_BE_IPAN,
 552         IWL_TX_FIFO_VI_IPAN,
 553         IWL_TX_FIFO_VO_IPAN,
 554         IWL_TX_FIFO_BE_IPAN,
 555         IWLAGN_CMD_FIFO_NUM,
 556         IWL_TX_FIFO_AUX,
 557 };
 558
 559 static const u8 iwlagn_bss_ac_to_fifo[] = {
 560         IWL_TX_FIFO_VO,
 561         IWL_TX_FIFO_VI,
 562         IWL_TX_FIFO_BE,
 563         IWL_TX_FIFO_BK,
 564 };
 565
 566 static const u8 iwlagn_bss_ac_to_queue[] = {
 567         0, 1, 2, 3,
 568 };
 569
 570 static const u8 iwlagn_pan_ac_to_fifo[] = {
 571         IWL_TX_FIFO_VO_IPAN,
 572         IWL_TX_FIFO_VI_IPAN,
 573         IWL_TX_FIFO_BE_IPAN,
 574         IWL_TX_FIFO_BK_IPAN,
 575 };
 576
 577 static const u8 iwlagn_pan_ac_to_queue[] = {
 578         7, 6, 5, 4,
 579 };
 580
 581 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 582 {
 583         int i;
 584
 585         /*
 586          * The default context is always valid,
 587          * the PAN context depends on uCode.
 588          */
 589         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 590         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 591                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 592
 593         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 594                 priv->contexts[i].ctxid = i;
 595
 596         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 597         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 598         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 599         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 600         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 601         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 602         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 603         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 604         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 605         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 606                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 607         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 608                 BIT(NL80211_IFTYPE_STATION);
 609         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 610         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 611         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 612         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 613         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 614                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 615         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 616                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 617
 618         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 619         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 620                 REPLY_WIPAN_RXON_TIMING;
 621         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 622                 REPLY_WIPAN_RXON_ASSOC;
 623         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 624         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 625         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 626         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 627         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 628         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 629                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 630
 631         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 632                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 633                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 634                         BIT(NL80211_IFTYPE_P2P_GO);
 635
 636         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 637         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 638         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 639         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 640                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 641         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 642                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 643         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 644
 645         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 646 }
 647
 648 void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 649 {
 650         struct iwl_ct_kill_config cmd;
 651         struct iwl_ct_kill_throttling_config adv_cmd;
 652         int ret = 0;
 653
 654         iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 655                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 656
 657         priv->thermal_throttle.ct_kill_toggle = false;
 658
 659         if (priv->cfg->base_params->support_ct_kill_exit) {
 660                 adv_cmd.critical_temperature_enter =
 661                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 662                 adv_cmd.critical_temperature_exit =
 663                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 664
 665                 ret = iwl_dvm_send_cmd_pdu(priv,
 666                                        REPLY_CT_KILL_CONFIG_CMD,
 667                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 668                 if (ret)
 669                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 670                 else
 671                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 672                                 "succeeded, critical temperature enter is %d,"
 673                                 "exit is %d\n",
 674                                 priv->hw_params.ct_kill_threshold,
 675                                 priv->hw_params.ct_kill_exit_threshold);
 676         } else {
 677                 cmd.critical_temperature_R =
 678                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 679
 680                 ret = iwl_dvm_send_cmd_pdu(priv,
 681                                        REPLY_CT_KILL_CONFIG_CMD,
 682                                        CMD_SYNC, sizeof(cmd), &cmd);
 683                 if (ret)
 684                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 685                 else
 686                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 687                                 "succeeded, "
 688                                 "critical temperature is %d\n",
 689                                 priv->hw_params.ct_kill_threshold);
 690         }
 691 }
 692
 693 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 694 {
 695         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 696         struct iwl_host_cmd cmd = {
 697                 .id = CALIBRATION_CFG_CMD,
 698                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 699                 .data = { &calib_cfg_cmd, },
 700         };
 701
 702         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 703         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 704         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 705
 706         return iwl_dvm_send_cmd(priv, &cmd);
 707 }
 708
 709
 710 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 711 {
 712         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 713           .valid = cpu_to_le32(valid_tx_ant),
 714         };
 715
 716         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 717                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 718                 return iwl_dvm_send_cmd_pdu(priv,
 719                                         TX_ANT_CONFIGURATION_CMD,
 720                                         CMD_SYNC,
 721                                         sizeof(struct iwl_tx_ant_config_cmd),
 722                                         &tx_ant_cmd);
 723         } else {
 724                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 725                 return -EOPNOTSUPP;
 726         }
 727 }
 728
 729 void iwl_send_bt_config(struct iwl_priv *priv)
 730 {
 731         struct iwl_bt_cmd bt_cmd = {
 732                 .lead_time = BT_LEAD_TIME_DEF,
 733                 .max_kill = BT_MAX_KILL_DEF,
 734                 .kill_ack_mask = 0,
 735                 .kill_cts_mask = 0,
 736         };
 737
 738         if (!iwlwifi_mod_params.bt_coex_active)
 739                 bt_cmd.flags = BT_COEX_DISABLE;
 740         else
 741                 bt_cmd.flags = BT_COEX_ENABLE;
 742
 743         priv->bt_enable_flag = bt_cmd.flags;
 744         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 745                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 746
 747         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 748                              CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
 749                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 750 }
 751
 752 /**
 753  * iwl_alive_start - called after REPLY_ALIVE notification received
 754  *                   from protocol/runtime uCode (initialization uCode's
 755  *                   Alive gets handled by iwl_init_alive_start()).
 756  */
 757 int iwl_alive_start(struct iwl_priv *priv)
 758 {
 759         int ret = 0;
 760         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 761
 762         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 763
 764         /* After the ALIVE response, we can send host commands to the uCode */
 765         set_bit(STATUS_ALIVE, &priv->status);
 766
 767         if (iwl_is_rfkill(priv))
 768                 return -ERFKILL;
 769
 770         if (priv->event_log.ucode_trace) {
 771                 /* start collecting data now */
 772                 mod_timer(&priv->ucode_trace, jiffies);
 773         }
 774
 775         /* download priority table before any calibration request */
 776         if (priv->cfg->bt_params &&
 777             priv->cfg->bt_params->advanced_bt_coexist) {
 778                 /* Configure Bluetooth device coexistence support */
 779                 if (priv->cfg->bt_params->bt_sco_disable)
 780                         priv->bt_enable_pspoll = false;
 781                 else
 782                         priv->bt_enable_pspoll = true;
 783
 784                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 785                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 786                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 787                 iwlagn_send_advance_bt_config(priv);
 788                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 789                 priv->cur_rssi_ctx = NULL;
 790
 791                 iwl_send_prio_tbl(priv);
 792
 793                 /* FIXME: w/a to force change uCode BT state machine */
 794                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 795                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 796                 if (ret)
 797                         return ret;
 798                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 799                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 800                 if (ret)
 801                         return ret;
 802         } else {
 803                 /*
 804                  * default is 2-wire BT coexexistence support
 805                  */
 806                 iwl_send_bt_config(priv);
 807         }
 808
 809         /*
 810          * Perform runtime calibrations, including DC calibration.
 811          */
 812         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 813
 814         ieee80211_wake_queues(priv->hw);
 815
 816         /* Configure Tx antenna selection based on H/W config */
 817         iwlagn_send_tx_ant_config(priv, priv->hw_params.valid_tx_ant);
 818
 819         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 820                 struct iwl_rxon_cmd *active_rxon =
 821                                 (struct iwl_rxon_cmd *)&ctx->active;
 822                 /* apply any changes in staging */
 823                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 824                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 825         } else {
 826                 struct iwl_rxon_context *tmp;
 827                 /* Initialize our rx_config data */
 828                 for_each_context(priv, tmp)
 829                         iwl_connection_init_rx_config(priv, tmp);
 830
 831                 iwlagn_set_rxon_chain(priv, ctx);
 832         }
 833
 834         if (!priv->wowlan) {
 835                 /* WoWLAN ucode will not reply in the same way, skip it */
 836                 iwl_reset_run_time_calib(priv);
 837         }
 838
 839         set_bit(STATUS_READY, &priv->status);
 840
 841         /* Configure the adapter for unassociated operation */
 842         ret = iwlagn_commit_rxon(priv, ctx);
 843         if (ret)
 844                 return ret;
 845
 846         /* At this point, the NIC is initialized and operational */
 847         iwl_rf_kill_ct_config(priv);
 848
 849         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 850
 851         return iwl_power_update_mode(priv, true);
 852 }
 853
 854 /**
 855  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 856  * @priv: iwl priv struct
 857  *
 858  * This is called during iwl_down() to make sure that in the case
 859  * we're coming there from a hardware restart mac80211 will be
 860  * able to reconfigure stations -- if we're getting there in the
 861  * normal down flow then the stations will already be cleared.
 862  */
 863 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 864 {
 865         struct iwl_rxon_context *ctx;
 866
 867         spin_lock_bh(&priv->sta_lock);
 868         memset(priv->stations, 0, sizeof(priv->stations));
 869         priv->num_stations = 0;
 870
 871         priv->ucode_key_table = 0;
 872
 873         for_each_context(priv, ctx) {
 874                 /*
 875                  * Remove all key information that is not stored as part
 876                  * of station information since mac80211 may not have had
 877                  * a chance to remove all the keys. When device is
 878                  * reconfigured by mac80211 after an error all keys will
 879                  * be reconfigured.
 880                  */
 881                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 882                 ctx->key_mapping_keys = 0;
 883         }
 884
 885         spin_unlock_bh(&priv->sta_lock);
 886 }
 887
 888 void iwl_down(struct iwl_priv *priv)
 889 {
 890         int exit_pending;
 891
 892         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 893
 894         lockdep_assert_held(&priv->mutex);
 895
 896         iwl_scan_cancel_timeout(priv, 200);
 897
 898         /*
 899          * If active, scanning won't cancel it, so say it expired.
 900          * No race since we hold the mutex here and a new one
 901          * can't come in at this time.
 902          */
 903         ieee80211_remain_on_channel_expired(priv->hw);
 904
 905         exit_pending =
 906                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 907
 908         iwl_clear_ucode_stations(priv, NULL);
 909         iwl_dealloc_bcast_stations(priv);
 910         iwl_clear_driver_stations(priv);
 911
 912         /* reset BT coex data */
 913         priv->bt_status = 0;
 914         priv->cur_rssi_ctx = NULL;
 915         priv->bt_is_sco = 0;
 916         if (priv->cfg->bt_params)
 917                 priv->bt_traffic_load =
 918                          priv->cfg->bt_params->bt_init_traffic_load;
 919         else
 920                 priv->bt_traffic_load = 0;
 921         priv->bt_full_concurrent = false;
 922         priv->bt_ci_compliance = 0;
 923
 924         /* Wipe out the EXIT_PENDING status bit if we are not actually
 925          * exiting the module */
 926         if (!exit_pending)
 927                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 928
 929         if (priv->mac80211_registered)
 930                 ieee80211_stop_queues(priv->hw);
 931
 932         priv->ucode_loaded = false;
 933         iwl_trans_stop_device(priv->trans);
 934
 935         /* Clear out all status bits but a few that are stable across reset */
 936         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 937                                 STATUS_RF_KILL_HW |
 938                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
 939                                 STATUS_GEO_CONFIGURED |
 940                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 941                                 STATUS_FW_ERROR |
 942                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 943                                 STATUS_EXIT_PENDING;
 944
 945         dev_kfree_skb(priv->beacon_skb);
 946         priv->beacon_skb = NULL;
 947 }
 948
 949 /*****************************************************************************
 950  *
 951  * Workqueue callbacks
 952  *
 953  *****************************************************************************/
 954
 955 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 956 {
 957         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 958                         run_time_calib_work);
 959
 960         mutex_lock(&priv->mutex);
 961
 962         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 963             test_bit(STATUS_SCANNING, &priv->status)) {
 964                 mutex_unlock(&priv->mutex);
 965                 return;
 966         }
 967
 968         if (priv->start_calib) {
 969                 iwl_chain_noise_calibration(priv);
 970                 iwl_sensitivity_calibration(priv);
 971         }
 972
 973         mutex_unlock(&priv->mutex);
 974 }
 975
 976 void iwlagn_prepare_restart(struct iwl_priv *priv)
 977 {
 978         bool bt_full_concurrent;
 979         u8 bt_ci_compliance;
 980         u8 bt_load;
 981         u8 bt_status;
 982         bool bt_is_sco;
 983         int i;
 984
 985         lockdep_assert_held(&priv->mutex);
 986
 987         priv->is_open = 0;
 988
 989         /*
 990          * __iwl_down() will clear the BT status variables,
 991          * which is correct, but when we restart we really
 992          * want to keep them so restore them afterwards.
 993          *
 994          * The restart process will later pick them up and
 995          * re-configure the hw when we reconfigure the BT
 996          * command.
 997          */
 998         bt_full_concurrent = priv->bt_full_concurrent;
 999         bt_ci_compliance = priv->bt_ci_compliance;
1000         bt_load = priv->bt_traffic_load;
1001         bt_status = priv->bt_status;
1002         bt_is_sco = priv->bt_is_sco;
1003
1004         iwl_down(priv);
1005
1006         priv->bt_full_concurrent = bt_full_concurrent;
1007         priv->bt_ci_compliance = bt_ci_compliance;
1008         priv->bt_traffic_load = bt_load;
1009         priv->bt_status = bt_status;
1010         priv->bt_is_sco = bt_is_sco;
1011
1012         /* reset aggregation queues */
1013         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
1014                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1015         /* and stop counts */
1016         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1017                 atomic_set(&priv->queue_stop_count[i], 0);
1018
1019         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
1020 }
1021
1022 static void iwl_bg_restart(struct work_struct *data)
1023 {
1024         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1025
1026         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1027                 return;
1028
1029         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1030                 mutex_lock(&priv->mutex);
1031                 iwlagn_prepare_restart(priv);
1032                 mutex_unlock(&priv->mutex);
1033                 iwl_cancel_deferred_work(priv);
1034                 ieee80211_restart_hw(priv->hw);
1035         } else {
1036                 WARN_ON(1);
1037         }
1038 }
1039
1040
1041
1042
1043 void iwlagn_disable_roc(struct iwl_priv *priv)
1044 {
1045         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1046
1047         lockdep_assert_held(&priv->mutex);
1048
1049         if (!priv->hw_roc_setup)
1050                 return;
1051
1052         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1053         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1054
1055         priv->hw_roc_channel = NULL;
1056
1057         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1058
1059         iwlagn_commit_rxon(priv, ctx);
1060
1061         ctx->is_active = false;
1062         priv->hw_roc_setup = false;
1063 }
1064
1065 static void iwlagn_disable_roc_work(struct work_struct *work)
1066 {
1067         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1068                                              hw_roc_disable_work.work);
1069
1070         mutex_lock(&priv->mutex);
1071         iwlagn_disable_roc(priv);
1072         mutex_unlock(&priv->mutex);
1073 }
1074
1075 /*****************************************************************************
1076  *
1077  * driver setup and teardown
1078  *
1079  *****************************************************************************/
1080
1081 void iwl_setup_deferred_work(struct iwl_priv *priv)
1082 {
1083         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1084
1085         INIT_WORK(&priv->restart, iwl_bg_restart);
1086         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1087         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1088         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1089         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1090         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1091         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1092                           iwlagn_disable_roc_work);
1093
1094         iwl_setup_scan_deferred_work(priv);
1095
1096         if (priv->cfg->bt_params)
1097                 iwlagn_bt_setup_deferred_work(priv);
1098
1099         init_timer(&priv->statistics_periodic);
1100         priv->statistics_periodic.data = (unsigned long)priv;
1101         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1102
1103         init_timer(&priv->ucode_trace);
1104         priv->ucode_trace.data = (unsigned long)priv;
1105         priv->ucode_trace.function = iwl_bg_ucode_trace;
1106 }
1107
1108 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1109 {
1110         if (priv->cfg->bt_params)
1111                 iwlagn_bt_cancel_deferred_work(priv);
1112
1113         cancel_work_sync(&priv->run_time_calib_work);
1114         cancel_work_sync(&priv->beacon_update);
1115
1116         iwl_cancel_scan_deferred_work(priv);
1117
1118         cancel_work_sync(&priv->bt_full_concurrency);
1119         cancel_work_sync(&priv->bt_runtime_config);
1120         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1121
1122         del_timer_sync(&priv->statistics_periodic);
1123         del_timer_sync(&priv->ucode_trace);
1124 }
1125
1126 static void iwl_init_hw_rates(struct ieee80211_rate *rates)
1127 {
1128         int i;
1129
1130         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1131                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1132                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1133                 rates[i].hw_value_short = i;
1134                 rates[i].flags = 0;
1135                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1136                         /*
1137                          * If CCK != 1M then set short preamble rate flag.
1138                          */
1139                         rates[i].flags |=
1140                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1141                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1142                 }
1143         }
1144 }
1145
1146 #define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
1147 #define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
1148 static void iwl_init_ht_hw_capab(const struct iwl_priv *priv,
1149                               struct ieee80211_sta_ht_cap *ht_info,
1150                               enum ieee80211_band band)
1151 {
1152         u16 max_bit_rate = 0;
1153         u8 rx_chains_num = priv->hw_params.rx_chains_num;
1154         u8 tx_chains_num = priv->hw_params.tx_chains_num;
1155
1156         ht_info->cap = 0;
1157         memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));
1158
1159         ht_info->ht_supported = true;
1160
1161         if (priv->cfg->ht_params &&
1162             priv->cfg->ht_params->ht_greenfield_support)
1163                 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
1164         ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
1165         max_bit_rate = MAX_BIT_RATE_20_MHZ;
1166         if (priv->hw_params.ht40_channel & BIT(band)) {
1167                 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1168                 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
1169                 ht_info->mcs.rx_mask[4] = 0x01;
1170                 max_bit_rate = MAX_BIT_RATE_40_MHZ;
1171         }
1172
1173         if (iwlwifi_mod_params.amsdu_size_8K)
1174                 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
1175
1176         ht_info->ampdu_factor = CFG_HT_RX_AMPDU_FACTOR_DEF;
1177         ht_info->ampdu_density = CFG_HT_MPDU_DENSITY_DEF;
1178
1179         ht_info->mcs.rx_mask[0] = 0xFF;
1180         if (rx_chains_num >= 2)
1181                 ht_info->mcs.rx_mask[1] = 0xFF;
1182         if (rx_chains_num >= 3)
1183                 ht_info->mcs.rx_mask[2] = 0xFF;
1184
1185         /* Highest supported Rx data rate */
1186         max_bit_rate *= rx_chains_num;
1187         WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
1188         ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
1189
1190         /* Tx MCS capabilities */
1191         ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
1192         if (tx_chains_num != rx_chains_num) {
1193                 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
1194                 ht_info->mcs.tx_params |= ((tx_chains_num - 1) <<
1195                                 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
1196         }
1197 }
1198
1199 /**
1200  * iwl_init_geos - Initialize mac80211's geo/channel info based from eeprom
1201  */
1202 static int iwl_init_geos(struct iwl_priv *priv)
1203 {
1204         struct iwl_channel_info *ch;
1205         struct ieee80211_supported_band *sband;
1206         struct ieee80211_channel *channels;
1207         struct ieee80211_channel *geo_ch;
1208         struct ieee80211_rate *rates;
1209         int i = 0;
1210         s8 max_tx_power = IWLAGN_TX_POWER_TARGET_POWER_MIN;
1211
1212         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
1213             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
1214                 IWL_DEBUG_INFO(priv, "Geography modes already initialized.\n");
1215                 set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1216                 return 0;
1217         }
1218
1219         channels = kcalloc(priv->channel_count,
1220                            sizeof(struct ieee80211_channel), GFP_KERNEL);
1221         if (!channels)
1222                 return -ENOMEM;
1223
1224         rates = kcalloc(IWL_RATE_COUNT_LEGACY, sizeof(struct ieee80211_rate),
1225                         GFP_KERNEL);
1226         if (!rates) {
1227                 kfree(channels);
1228                 return -ENOMEM;
1229         }
1230
1231         /* 5.2GHz channels start after the 2.4GHz channels */
1232         sband = &priv->bands[IEEE80211_BAND_5GHZ];
1233         sband->channels = &channels[ARRAY_SIZE(iwl_eeprom_band_1)];
1234         /* just OFDM */
1235         sband->bitrates = &rates[IWL_FIRST_OFDM_RATE];
1236         sband->n_bitrates = IWL_RATE_COUNT_LEGACY - IWL_FIRST_OFDM_RATE;
1237
1238         if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1239                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1240                                          IEEE80211_BAND_5GHZ);
1241
1242         sband = &priv->bands[IEEE80211_BAND_2GHZ];
1243         sband->channels = channels;
1244         /* OFDM & CCK */
1245         sband->bitrates = rates;
1246         sband->n_bitrates = IWL_RATE_COUNT_LEGACY;
1247
1248         if (priv->hw_params.sku & EEPROM_SKU_CAP_11N_ENABLE)
1249                 iwl_init_ht_hw_capab(priv, &sband->ht_cap,
1250                                          IEEE80211_BAND_2GHZ);
1251
1252         priv->ieee_channels = channels;
1253         priv->ieee_rates = rates;
1254
1255         for (i = 0;  i < priv->channel_count; i++) {
1256                 ch = &priv->channel_info[i];
1257
1258                 /* FIXME: might be removed if scan is OK */
1259                 if (!is_channel_valid(ch))
1260                         continue;
1261
1262                 sband =  &priv->bands[ch->band];
1263
1264                 geo_ch = &sband->channels[sband->n_channels++];
1265
1266                 geo_ch->center_freq =
1267                         ieee80211_channel_to_frequency(ch->channel, ch->band);
1268                 geo_ch->max_power = ch->max_power_avg;
1269                 geo_ch->max_antenna_gain = 0xff;
1270                 geo_ch->hw_value = ch->channel;
1271
1272                 if (is_channel_valid(ch)) {
1273                         if (!(ch->flags & EEPROM_CHANNEL_IBSS))
1274                                 geo_ch->flags |= IEEE80211_CHAN_NO_IBSS;
1275
1276                         if (!(ch->flags & EEPROM_CHANNEL_ACTIVE))
1277                                 geo_ch->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
1278
1279                         if (ch->flags & EEPROM_CHANNEL_RADAR)
1280                                 geo_ch->flags |= IEEE80211_CHAN_RADAR;
1281
1282                         geo_ch->flags |= ch->ht40_extension_channel;
1283
1284                         if (ch->max_power_avg > max_tx_power)
1285                                 max_tx_power = ch->max_power_avg;
1286                 } else {
1287                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
1288                 }
1289
1290                 IWL_DEBUG_INFO(priv, "Channel %d Freq=%d[%sGHz] %s flag=0x%X\n",
1291                                 ch->channel, geo_ch->center_freq,
1292                                 is_channel_a_band(ch) ?  "5.2" : "2.4",
1293                                 geo_ch->flags & IEEE80211_CHAN_DISABLED ?
1294                                 "restricted" : "valid",
1295                                  geo_ch->flags);
1296         }
1297
1298         priv->tx_power_device_lmt = max_tx_power;
1299         priv->tx_power_user_lmt = max_tx_power;
1300         priv->tx_power_next = max_tx_power;
1301
1302         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
1303              priv->hw_params.sku & EEPROM_SKU_CAP_BAND_52GHZ) {
1304                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
1305                         "Please send your %s to maintainer.\n",
1306                         priv->trans->hw_id_str);
1307                 priv->hw_params.sku &= ~EEPROM_SKU_CAP_BAND_52GHZ;
1308         }
1309
1310         if (iwlwifi_mod_params.disable_5ghz)
1311                 priv->bands[IEEE80211_BAND_5GHZ].n_channels = 0;
1312
1313         IWL_INFO(priv, "Tunable channels: %d 802.11bg, %d 802.11a channels\n",
1314                    priv->bands[IEEE80211_BAND_2GHZ].n_channels,
1315                    priv->bands[IEEE80211_BAND_5GHZ].n_channels);
1316
1317         set_bit(STATUS_GEO_CONFIGURED, &priv->status);
1318
1319         return 0;
1320 }
1321
1322 /*
1323  * iwl_free_geos - undo allocations in iwl_init_geos
1324  */
1325 static void iwl_free_geos(struct iwl_priv *priv)
1326 {
1327         kfree(priv->ieee_channels);
1328         kfree(priv->ieee_rates);
1329         clear_bit(STATUS_GEO_CONFIGURED, &priv->status);
1330 }
1331
1332 int iwl_init_drv(struct iwl_priv *priv)
1333 {
1334         int ret;
1335
1336         spin_lock_init(&priv->sta_lock);
1337
1338         mutex_init(&priv->mutex);
1339
1340         INIT_LIST_HEAD(&priv->calib_results);
1341
1342         priv->ieee_channels = NULL;
1343         priv->ieee_rates = NULL;
1344         priv->band = IEEE80211_BAND_2GHZ;
1345
1346         priv->plcp_delta_threshold =
1347                 priv->cfg->base_params->plcp_delta_threshold;
1348
1349         priv->iw_mode = NL80211_IFTYPE_STATION;
1350         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1351         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1352         priv->agg_tids_count = 0;
1353
1354         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1355
1356         priv->rx_statistics_jiffies = jiffies;
1357
1358         /* Choose which receivers/antennas to use */
1359         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1360
1361         iwl_init_scan_params(priv);
1362
1363         /* init bt coex */
1364         if (priv->cfg->bt_params &&
1365             priv->cfg->bt_params->advanced_bt_coexist) {
1366                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1367                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1368                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1369                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1370                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1371                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1372         }
1373
1374         ret = iwl_init_channel_map(priv);
1375         if (ret) {
1376                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1377                 goto err;
1378         }
1379
1380         ret = iwl_init_geos(priv);
1381         if (ret) {
1382                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1383                 goto err_free_channel_map;
1384         }
1385         iwl_init_hw_rates(priv->ieee_rates);
1386
1387         return 0;
1388
1389 err_free_channel_map:
1390         iwl_free_channel_map(priv);
1391 err:
1392         return ret;
1393 }
1394
1395 void iwl_uninit_drv(struct iwl_priv *priv)
1396 {
1397         iwl_free_geos(priv);
1398         iwl_free_channel_map(priv);
1399         kfree(priv->scan_cmd);
1400         kfree(priv->beacon_cmd);
1401         kfree(rcu_dereference_raw(priv->noa_data));
1402         iwl_calib_free_results(priv);
1403 #ifdef CONFIG_IWLWIFI_DEBUGFS
1404         kfree(priv->wowlan_sram);
1405 #endif
1406 }
1407
1408 void iwl_set_hw_params(struct iwl_priv *priv)
1409 {
1410         if (priv->cfg->ht_params)
1411                 priv->hw_params.use_rts_for_aggregation =
1412                         priv->cfg->ht_params->use_rts_for_aggregation;
1413
1414         if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1415                 priv->hw_params.sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1416
1417         /* Device-specific setup */
1418         priv->lib->set_hw_params(priv);
1419 }
1420
1421
1422
1423 /* show what optional capabilities we have */
1424 void iwl_option_config(struct iwl_priv *priv)
1425 {
1426 #ifdef CONFIG_IWLWIFI_DEBUG
1427         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1428 #else
1429         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1430 #endif
1431
1432 #ifdef CONFIG_IWLWIFI_DEBUGFS
1433         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1434 #else
1435         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1436 #endif
1437
1438 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1439         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1440 #else
1441         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1442 #endif
1443
1444 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1445         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n");
1446 #else
1447         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n");
1448 #endif
1449
1450 #ifdef CONFIG_IWLWIFI_P2P
1451         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1452 #else
1453         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1454 #endif
1455 }
1456
1457 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1458                                                  const struct iwl_cfg *cfg,
1459                                                  const struct iwl_fw *fw)
1460 {
1461         struct iwl_priv *priv;
1462         struct ieee80211_hw *hw;
1463         struct iwl_op_mode *op_mode;
1464         u16 num_mac;
1465         u32 ucode_flags;
1466         struct iwl_trans_config trans_cfg;
1467         static const u8 no_reclaim_cmds[] = {
1468                 REPLY_RX_PHY_CMD,
1469                 REPLY_RX,
1470                 REPLY_RX_MPDU_CMD,
1471                 REPLY_COMPRESSED_BA,
1472                 STATISTICS_NOTIFICATION,
1473                 REPLY_TX,
1474         };
1475         int i;
1476
1477         /************************
1478          * 1. Allocating HW data
1479          ************************/
1480         hw = iwl_alloc_all();
1481         if (!hw) {
1482                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1483                 goto out;
1484         }
1485
1486         op_mode = hw->priv;
1487         op_mode->ops = &iwl_dvm_ops;
1488         priv = IWL_OP_MODE_GET_DVM(op_mode);
1489         priv->trans = trans;
1490         priv->dev = trans->dev;
1491         priv->cfg = cfg;
1492         priv->fw = fw;
1493
1494         switch (priv->cfg->device_family) {
1495         case IWL_DEVICE_FAMILY_1000:
1496         case IWL_DEVICE_FAMILY_100:
1497                 priv->lib = &iwl1000_lib;
1498                 break;
1499         case IWL_DEVICE_FAMILY_2000:
1500         case IWL_DEVICE_FAMILY_105:
1501                 priv->lib = &iwl2000_lib;
1502                 break;
1503         case IWL_DEVICE_FAMILY_2030:
1504         case IWL_DEVICE_FAMILY_135:
1505                 priv->lib = &iwl2030_lib;
1506                 break;
1507         case IWL_DEVICE_FAMILY_5000:
1508                 priv->lib = &iwl5000_lib;
1509                 break;
1510         case IWL_DEVICE_FAMILY_5150:
1511                 priv->lib = &iwl5150_lib;
1512                 break;
1513         case IWL_DEVICE_FAMILY_6000:
1514         case IWL_DEVICE_FAMILY_6005:
1515         case IWL_DEVICE_FAMILY_6000i:
1516         case IWL_DEVICE_FAMILY_6050:
1517         case IWL_DEVICE_FAMILY_6150:
1518                 priv->lib = &iwl6000_lib;
1519                 break;
1520         case IWL_DEVICE_FAMILY_6030:
1521                 priv->lib = &iwl6030_lib;
1522                 break;
1523         default:
1524                 break;
1525         }
1526
1527         if (WARN_ON(!priv->lib))
1528                 goto out_free_hw;
1529
1530         /*
1531          * Populate the state variables that the transport layer needs
1532          * to know about.
1533          */
1534         trans_cfg.op_mode = op_mode;
1535         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1536         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1537         trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1538         if (!iwlwifi_mod_params.wd_disable)
1539                 trans_cfg.queue_watchdog_timeout =
1540                         priv->cfg->base_params->wd_timeout;
1541         else
1542                 trans_cfg.queue_watchdog_timeout = IWL_WATCHHDOG_DISABLED;
1543         trans_cfg.command_names = iwl_dvm_cmd_strings;
1544
1545         ucode_flags = fw->ucode_capa.flags;
1546
1547 #ifndef CONFIG_IWLWIFI_P2P
1548         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1549 #endif
1550
1551         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1552                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1553                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1554                 trans_cfg.queue_to_fifo = iwlagn_ipan_queue_to_tx_fifo;
1555                 trans_cfg.n_queue_to_fifo =
1556                         ARRAY_SIZE(iwlagn_ipan_queue_to_tx_fifo);
1557         } else {
1558                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1559                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1560                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1561                 trans_cfg.n_queue_to_fifo =
1562                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1563         }
1564
1565         /* Configure transport layer */
1566         iwl_trans_configure(priv->trans, &trans_cfg);
1567
1568         /* At this point both hw and priv are allocated. */
1569
1570         SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1571
1572         iwl_option_config(priv);
1573
1574         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1575
1576         /* is antenna coupling more than 35dB ? */
1577         priv->bt_ant_couple_ok =
1578                 (iwlwifi_mod_params.ant_coupling >
1579                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1580                         true : false;
1581
1582         /* enable/disable bt channel inhibition */
1583         priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1584         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1585                        (priv->bt_ch_announce) ? "On" : "Off");
1586
1587         /* these spin locks will be used in apm_ops.init and EEPROM access
1588          * we should init now
1589          */
1590         spin_lock_init(&priv->statistics.lock);
1591
1592         /***********************
1593          * 2. Read REV register
1594          ***********************/
1595         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1596                 priv->cfg->name, priv->trans->hw_rev);
1597
1598         if (iwl_trans_start_hw(priv->trans))
1599                 goto out_free_hw;
1600
1601         /* Read the EEPROM */
1602         if (iwl_eeprom_init(priv, priv->trans->hw_rev)) {
1603                 IWL_ERR(priv, "Unable to init EEPROM\n");
1604                 goto out_free_hw;
1605         }
1606         /* Reset chip to save power until we load uCode during "up". */
1607         iwl_trans_stop_hw(priv->trans, false);
1608
1609         if (iwl_eeprom_check_version(priv))
1610                 goto out_free_eeprom;
1611
1612         if (iwl_eeprom_init_hw_params(priv))
1613                 goto out_free_eeprom;
1614
1615         /* extract MAC Address */
1616         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
1617         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1618         priv->hw->wiphy->addresses = priv->addresses;
1619         priv->hw->wiphy->n_addresses = 1;
1620         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
1621         if (num_mac > 1) {
1622                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1623                        ETH_ALEN);
1624                 priv->addresses[1].addr[5]++;
1625                 priv->hw->wiphy->n_addresses++;
1626         }
1627
1628         /************************
1629          * 4. Setup HW constants
1630          ************************/
1631         iwl_set_hw_params(priv);
1632
1633         if (!(priv->hw_params.sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1634                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1635                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1636                 /*
1637                  * if not PAN, then don't support P2P -- might be a uCode
1638                  * packaging bug or due to the eeprom check above
1639                  */
1640                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1641                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1642                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1643                 trans_cfg.queue_to_fifo = iwlagn_default_queue_to_tx_fifo;
1644                 trans_cfg.n_queue_to_fifo =
1645                         ARRAY_SIZE(iwlagn_default_queue_to_tx_fifo);
1646
1647                 /* Configure transport layer again*/
1648                 iwl_trans_configure(priv->trans, &trans_cfg);
1649         }
1650
1651         /*******************
1652          * 5. Setup priv
1653          *******************/
1654         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1655                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1656                 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1657                     i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1658                     i != IWL_IPAN_CMD_QUEUE_NUM)
1659                         priv->queue_to_mac80211[i] = i;
1660                 atomic_set(&priv->queue_stop_count[i], 0);
1661         }
1662
1663         WARN_ON(trans_cfg.queue_to_fifo[trans_cfg.cmd_queue] !=
1664                                                 IWLAGN_CMD_FIFO_NUM);
1665
1666         if (iwl_init_drv(priv))
1667                 goto out_free_eeprom;
1668
1669         /* At this point both hw and priv are initialized. */
1670
1671         /********************
1672          * 6. Setup services
1673          ********************/
1674         iwl_setup_deferred_work(priv);
1675         iwl_setup_rx_handlers(priv);
1676         iwl_testmode_init(priv);
1677
1678         iwl_power_initialize(priv);
1679         iwl_tt_initialize(priv);
1680
1681         snprintf(priv->hw->wiphy->fw_version,
1682                  sizeof(priv->hw->wiphy->fw_version),
1683                  "%s", fw->fw_version);
1684
1685         priv->new_scan_threshold_behaviour =
1686                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1687
1688         priv->phy_calib_chain_noise_reset_cmd =
1689                 fw->ucode_capa.standard_phy_calibration_size;
1690         priv->phy_calib_chain_noise_gain_cmd =
1691                 fw->ucode_capa.standard_phy_calibration_size + 1;
1692
1693         /* initialize all valid contexts */
1694         iwl_init_context(priv, ucode_flags);
1695
1696         /**************************************************
1697          * This is still part of probe() in a sense...
1698          *
1699          * 7. Setup and register with mac80211 and debugfs
1700          **************************************************/
1701         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1702                 goto out_destroy_workqueue;
1703
1704         if (iwl_dbgfs_register(priv, DRV_NAME))
1705                 IWL_ERR(priv,
1706                         "failed to create debugfs files. Ignoring error\n");
1707
1708         return op_mode;
1709
1710 out_destroy_workqueue:
1711         destroy_workqueue(priv->workqueue);
1712         priv->workqueue = NULL;
1713         iwl_uninit_drv(priv);
1714 out_free_eeprom:
1715         iwl_eeprom_free(priv);
1716 out_free_hw:
1717         ieee80211_free_hw(priv->hw);
1718 out:
1719         op_mode = NULL;
1720         return op_mode;
1721 }
1722
1723 void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1724 {
1725         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1726
1727         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1728
1729         iwl_dbgfs_unregister(priv);
1730
1731         iwl_testmode_cleanup(priv);
1732         iwlagn_mac_unregister(priv);
1733
1734         iwl_tt_exit(priv);
1735
1736         /*This will stop the queues, move the device to low power state */
1737         priv->ucode_loaded = false;
1738         iwl_trans_stop_device(priv->trans);
1739
1740         iwl_eeprom_free(priv);
1741
1742         /*netif_stop_queue(dev); */
1743         flush_workqueue(priv->workqueue);
1744
1745         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1746          * priv->workqueue... so we can't take down the workqueue
1747          * until now... */
1748         destroy_workqueue(priv->workqueue);
1749         priv->workqueue = NULL;
1750
1751         iwl_uninit_drv(priv);
1752
1753         dev_kfree_skb(priv->beacon_skb);
1754
1755         iwl_trans_stop_hw(priv->trans, true);
1756         ieee80211_free_hw(priv->hw);
1757 }
1758
1759 static const char * const desc_lookup_text[] = {
1760         "OK",
1761         "FAIL",
1762         "BAD_PARAM",
1763         "BAD_CHECKSUM",
1764         "NMI_INTERRUPT_WDG",
1765         "SYSASSERT",
1766         "FATAL_ERROR",
1767         "BAD_COMMAND",
1768         "HW_ERROR_TUNE_LOCK",
1769         "HW_ERROR_TEMPERATURE",
1770         "ILLEGAL_CHAN_FREQ",
1771         "VCC_NOT_STABLE",
1772         "FH_ERROR",
1773         "NMI_INTERRUPT_HOST",
1774         "NMI_INTERRUPT_ACTION_PT",
1775         "NMI_INTERRUPT_UNKNOWN",
1776         "UCODE_VERSION_MISMATCH",
1777         "HW_ERROR_ABS_LOCK",
1778         "HW_ERROR_CAL_LOCK_FAIL",
1779         "NMI_INTERRUPT_INST_ACTION_PT",
1780         "NMI_INTERRUPT_DATA_ACTION_PT",
1781         "NMI_TRM_HW_ER",
1782         "NMI_INTERRUPT_TRM",
1783         "NMI_INTERRUPT_BREAK_POINT",
1784         "DEBUG_0",
1785         "DEBUG_1",
1786         "DEBUG_2",
1787         "DEBUG_3",
1788 };
1789
1790 static struct { char *name; u8 num; } advanced_lookup[] = {
1791         { "NMI_INTERRUPT_WDG", 0x34 },
1792         { "SYSASSERT", 0x35 },
1793         { "UCODE_VERSION_MISMATCH", 0x37 },
1794         { "BAD_COMMAND", 0x38 },
1795         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1796         { "FATAL_ERROR", 0x3D },
1797         { "NMI_TRM_HW_ERR", 0x46 },
1798         { "NMI_INTERRUPT_TRM", 0x4C },
1799         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1800         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1801         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1802         { "NMI_INTERRUPT_HOST", 0x66 },
1803         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1804         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1805         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1806         { "ADVANCED_SYSASSERT", 0 },
1807 };
1808
1809 static const char *desc_lookup(u32 num)
1810 {
1811         int i;
1812         int max = ARRAY_SIZE(desc_lookup_text);
1813
1814         if (num < max)
1815                 return desc_lookup_text[num];
1816
1817         max = ARRAY_SIZE(advanced_lookup) - 1;
1818         for (i = 0; i < max; i++) {
1819                 if (advanced_lookup[i].num == num)
1820                         break;
1821         }
1822         return advanced_lookup[i].name;
1823 }
1824
1825 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1826 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1827
1828 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1829 {
1830         struct iwl_trans *trans = priv->trans;
1831         u32 base;
1832         struct iwl_error_event_table table;
1833
1834         base = priv->device_pointers.error_event_table;
1835         if (priv->cur_ucode == IWL_UCODE_INIT) {
1836                 if (!base)
1837                         base = priv->fw->init_errlog_ptr;
1838         } else {
1839                 if (!base)
1840                         base = priv->fw->inst_errlog_ptr;
1841         }
1842
1843         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1844                 IWL_ERR(priv,
1845                         "Not valid error log pointer 0x%08X for %s uCode\n",
1846                         base,
1847                         (priv->cur_ucode == IWL_UCODE_INIT)
1848                                         ? "Init" : "RT");
1849                 return;
1850         }
1851
1852         /*TODO: Update dbgfs with ISR error stats obtained below */
1853         iwl_read_targ_mem_words(trans, base, &table, sizeof(table));
1854
1855         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1856                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1857                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1858                         priv->status, table.valid);
1859         }
1860
1861         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1862                                       table.data1, table.data2, table.line,
1863                                       table.blink1, table.blink2, table.ilink1,
1864                                       table.ilink2, table.bcon_time, table.gp1,
1865                                       table.gp2, table.gp3, table.ucode_ver,
1866                                       table.hw_ver, table.brd_ver);
1867         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1868                 desc_lookup(table.error_id));
1869         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1870         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1871         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1872         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1873         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1874         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1875         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1876         IWL_ERR(priv, "0x%08X | line\n", table.line);
1877         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1878         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1879         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1880         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1881         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1882         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1883         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1884         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1885         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1886         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1887         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1888         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1889         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1890         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1891         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1892         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1893         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1894         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1895         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1896         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1897         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1898         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1899         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1900         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1901 }
1902
1903 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1904
1905 /**
1906  * iwl_print_event_log - Dump error event log to syslog
1907  *
1908  */
1909 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1910                                u32 num_events, u32 mode,
1911                                int pos, char **buf, size_t bufsz)
1912 {
1913         u32 i;
1914         u32 base;       /* SRAM byte address of event log header */
1915         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1916         u32 ptr;        /* SRAM byte address of log data */
1917         u32 ev, time, data; /* event log data */
1918         unsigned long reg_flags;
1919
1920         struct iwl_trans *trans = priv->trans;
1921
1922         if (num_events == 0)
1923                 return pos;
1924
1925         base = priv->device_pointers.log_event_table;
1926         if (priv->cur_ucode == IWL_UCODE_INIT) {
1927                 if (!base)
1928                         base = priv->fw->init_evtlog_ptr;
1929         } else {
1930                 if (!base)
1931                         base = priv->fw->inst_evtlog_ptr;
1932         }
1933
1934         if (mode == 0)
1935                 event_size = 2 * sizeof(u32);
1936         else
1937                 event_size = 3 * sizeof(u32);
1938
1939         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1940
1941         /* Make sure device is powered up for SRAM reads */
1942         spin_lock_irqsave(&trans->reg_lock, reg_flags);
1943         if (unlikely(!iwl_grab_nic_access(trans)))
1944                 goto out_unlock;
1945
1946         /* Set starting address; reads will auto-increment */
1947         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1948
1949         /* "time" is actually "data" for mode 0 (no timestamp).
1950         * place event id # at far right for easier visual parsing. */
1951         for (i = 0; i < num_events; i++) {
1952                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1953                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1954                 if (mode == 0) {
1955                         /* data, ev */
1956                         if (bufsz) {
1957                                 pos += scnprintf(*buf + pos, bufsz - pos,
1958                                                 "EVT_LOG:0x%08x:%04u\n",
1959                                                 time, ev);
1960                         } else {
1961                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1962                                         time, ev);
1963                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1964                                         time, ev);
1965                         }
1966                 } else {
1967                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1968                         if (bufsz) {
1969                                 pos += scnprintf(*buf + pos, bufsz - pos,
1970                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1971                                                  time, data, ev);
1972                         } else {
1973                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1974                                         time, data, ev);
1975                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1976                                         data, ev);
1977                         }
1978                 }
1979         }
1980
1981         /* Allow device to power down */
1982         iwl_release_nic_access(trans);
1983 out_unlock:
1984         spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1985         return pos;
1986 }
1987
1988 /**
1989  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1990  */
1991 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1992                                     u32 num_wraps, u32 next_entry,
1993                                     u32 size, u32 mode,
1994                                     int pos, char **buf, size_t bufsz)
1995 {
1996         /*
1997          * display the newest DEFAULT_LOG_ENTRIES entries
1998          * i.e the entries just before the next ont that uCode would fill.
1999          */
2000         if (num_wraps) {
2001                 if (next_entry < size) {
2002                         pos = iwl_print_event_log(priv,
2003                                                 capacity - (size - next_entry),
2004                                                 size - next_entry, mode,
2005                                                 pos, buf, bufsz);
2006                         pos = iwl_print_event_log(priv, 0,
2007                                                   next_entry, mode,
2008                                                   pos, buf, bufsz);
2009                 } else
2010                         pos = iwl_print_event_log(priv, next_entry - size,
2011                                                   size, mode, pos, buf, bufsz);
2012         } else {
2013                 if (next_entry < size) {
2014                         pos = iwl_print_event_log(priv, 0, next_entry,
2015                                                   mode, pos, buf, bufsz);
2016                 } else {
2017                         pos = iwl_print_event_log(priv, next_entry - size,
2018                                                   size, mode, pos, buf, bufsz);
2019                 }
2020         }
2021         return pos;
2022 }
2023
2024 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
2025
2026 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
2027                             char **buf, bool display)
2028 {
2029         u32 base;       /* SRAM byte address of event log header */
2030         u32 capacity;   /* event log capacity in # entries */
2031         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2032         u32 num_wraps;  /* # times uCode wrapped to top of log */
2033         u32 next_entry; /* index of next entry to be written by uCode */
2034         u32 size;       /* # entries that we'll print */
2035         u32 logsize;
2036         int pos = 0;
2037         size_t bufsz = 0;
2038         struct iwl_trans *trans = priv->trans;
2039
2040         base = priv->device_pointers.log_event_table;
2041         if (priv->cur_ucode == IWL_UCODE_INIT) {
2042                 logsize = priv->fw->init_evtlog_size;
2043                 if (!base)
2044                         base = priv->fw->init_evtlog_ptr;
2045         } else {
2046                 logsize = priv->fw->inst_evtlog_size;
2047                 if (!base)
2048                         base = priv->fw->inst_evtlog_ptr;
2049         }
2050
2051         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
2052                 IWL_ERR(priv,
2053                         "Invalid event log pointer 0x%08X for %s uCode\n",
2054                         base,
2055                         (priv->cur_ucode == IWL_UCODE_INIT)
2056                                         ? "Init" : "RT");
2057                 return -EINVAL;
2058         }
2059
2060         /* event log header */
2061         capacity = iwl_read_targ_mem(trans, base);
2062         mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
2063         num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
2064         next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
2065
2066         if (capacity > logsize) {
2067                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
2068                         "entries\n", capacity, logsize);
2069                 capacity = logsize;
2070         }
2071
2072         if (next_entry > logsize) {
2073                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
2074                         next_entry, logsize);
2075                 next_entry = logsize;
2076         }
2077
2078         size = num_wraps ? capacity : next_entry;
2079
2080         /* bail out if nothing in log */
2081         if (size == 0) {
2082                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
2083                 return pos;
2084         }
2085
2086 #ifdef CONFIG_IWLWIFI_DEBUG
2087         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
2088                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2089                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2090 #else
2091         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
2092                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
2093 #endif
2094         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
2095                 size);
2096
2097 #ifdef CONFIG_IWLWIFI_DEBUG
2098         if (display) {
2099                 if (full_log)
2100                         bufsz = capacity * 48;
2101                 else
2102                         bufsz = size * 48;
2103                 *buf = kmalloc(bufsz, GFP_KERNEL);
2104                 if (!*buf)
2105                         return -ENOMEM;
2106         }
2107         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
2108                 /*
2109                  * if uCode has wrapped back to top of log,
2110                  * start at the oldest entry,
2111                  * i.e the next one that uCode would fill.
2112                  */
2113                 if (num_wraps)
2114                         pos = iwl_print_event_log(priv, next_entry,
2115                                                 capacity - next_entry, mode,
2116                                                 pos, buf, bufsz);
2117                 /* (then/else) start at top of log */
2118                 pos = iwl_print_event_log(priv, 0,
2119                                           next_entry, mode, pos, buf, bufsz);
2120         } else
2121                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2122                                                 next_entry, size, mode,
2123                                                 pos, buf, bufsz);
2124 #else
2125         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
2126                                         next_entry, size, mode,
2127                                         pos, buf, bufsz);
2128 #endif
2129         return pos;
2130 }
2131
2132 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
2133 {
2134         unsigned int reload_msec;
2135         unsigned long reload_jiffies;
2136
2137 #ifdef CONFIG_IWLWIFI_DEBUG
2138         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
2139                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
2140 #endif
2141
2142         /* uCode is no longer loaded. */
2143         priv->ucode_loaded = false;
2144
2145         /* Set the FW error flag -- cleared on iwl_down */
2146         set_bit(STATUS_FW_ERROR, &priv->status);
2147
2148         iwl_abort_notification_waits(&priv->notif_wait);
2149
2150         /* Keep the restart process from trying to send host
2151          * commands by clearing the ready bit */
2152         clear_bit(STATUS_READY, &priv->status);
2153
2154         wake_up(&priv->trans->wait_command_queue);
2155
2156         if (!ondemand) {
2157                 /*
2158                  * If firmware keep reloading, then it indicate something
2159                  * serious wrong and firmware having problem to recover
2160                  * from it. Instead of keep trying which will fill the syslog
2161                  * and hang the system, let's just stop it
2162                  */
2163                 reload_jiffies = jiffies;
2164                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
2165                                         (long) priv->reload_jiffies);
2166                 priv->reload_jiffies = reload_jiffies;
2167                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
2168                         priv->reload_count++;
2169                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
2170                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
2171                                 return;
2172                         }
2173                 } else
2174                         priv->reload_count = 0;
2175         }
2176
2177         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2178                 if (iwlwifi_mod_params.restart_fw) {
2179                         IWL_DEBUG_FW_ERRORS(priv,
2180                                   "Restarting adapter due to uCode error.\n");
2181                         queue_work(priv->workqueue, &priv->restart);
2182                 } else
2183                         IWL_DEBUG_FW_ERRORS(priv,
2184                                   "Detected FW error, but not restarting\n");
2185         }
2186 }
2187
2188 void iwl_nic_error(struct iwl_op_mode *op_mode)
2189 {
2190         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2191
2192         IWL_ERR(priv, "Loaded firmware version: %s\n",
2193                 priv->fw->fw_version);
2194
2195         iwl_dump_nic_error_log(priv);
2196         iwl_dump_nic_event_log(priv, false, NULL, false);
2197
2198         iwlagn_fw_error(priv, false);
2199 }
2200
2201 void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
2202 {
2203         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2204
2205         if (!iwl_check_for_ct_kill(priv)) {
2206                 IWL_ERR(priv, "Restarting adapter queue is full\n");
2207                 iwlagn_fw_error(priv, false);
2208         }
2209 }
2210
2211 void iwl_nic_config(struct iwl_op_mode *op_mode)
2212 {
2213         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2214
2215         priv->lib->nic_config(priv);
2216 }
2217
2218 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2219 {
2220         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2221
2222         clear_bit(STATUS_READY, &priv->status);
2223         IWL_ERR(priv, "RF is used by WiMAX\n");
2224 }
2225
2226 void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2227 {
2228         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2229         int mq = priv->queue_to_mac80211[queue];
2230
2231         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2232                 return;
2233
2234         if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2235                 IWL_DEBUG_TX_QUEUES(priv,
2236                         "queue %d (mac80211 %d) already stopped\n",
2237                         queue, mq);
2238                 return;
2239         }
2240
2241         set_bit(mq, &priv->transport_queue_stop);
2242         ieee80211_stop_queue(priv->hw, mq);
2243 }
2244
2245 void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2246 {
2247         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2248         int mq = priv->queue_to_mac80211[queue];
2249
2250         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2251                 return;
2252
2253         if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2254                 IWL_DEBUG_TX_QUEUES(priv,
2255                         "queue %d (mac80211 %d) already awake\n",
2256                         queue, mq);
2257                 return;
2258         }
2259
2260         clear_bit(mq, &priv->transport_queue_stop);
2261
2262         if (!priv->passive_no_rx)
2263                 ieee80211_wake_queue(priv->hw, mq);
2264 }
2265
2266 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2267 {
2268         int mq;
2269
2270         if (!priv->passive_no_rx)
2271                 return;
2272
2273         for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2274                 if (!test_bit(mq, &priv->transport_queue_stop)) {
2275                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2276                         ieee80211_wake_queue(priv->hw, mq);
2277                 } else {
2278                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2279                 }
2280         }
2281
2282         priv->passive_no_rx = false;
2283 }
2284
2285 void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2286 {
2287         struct ieee80211_tx_info *info;
2288
2289         info = IEEE80211_SKB_CB(skb);
2290         kmem_cache_free(iwl_tx_cmd_pool, (info->driver_data[1]));
2291         dev_kfree_skb_any(skb);
2292 }
2293
2294 void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2295 {
2296         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2297
2298         if (state)
2299                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2300         else
2301                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2302
2303         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2304 }
2305
2306 const struct iwl_op_mode_ops iwl_dvm_ops = {
2307         .start = iwl_op_mode_dvm_start,
2308         .stop = iwl_op_mode_dvm_stop,
2309         .rx = iwl_rx_dispatch,
2310         .queue_full = iwl_stop_sw_queue,
2311         .queue_not_full = iwl_wake_sw_queue,
2312         .hw_rf_kill = iwl_set_hw_rfkill_state,
2313         .free_skb = iwl_free_skb,
2314         .nic_error = iwl_nic_error,
2315         .cmd_queue_full = iwl_cmd_queue_full,
2316         .nic_config = iwl_nic_config,
2317         .wimax_active = iwl_wimax_active,
2318 };
2319
2320 /*****************************************************************************
2321  *
2322  * driver and module entry point
2323  *
2324  *****************************************************************************/
2325
2326 struct kmem_cache *iwl_tx_cmd_pool;
2327
2328 static int __init iwl_init(void)
2329 {
2330
2331         int ret;
2332         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2333         pr_info(DRV_COPYRIGHT "\n");
2334
2335         iwl_tx_cmd_pool = kmem_cache_create("iwl_dev_cmd",
2336                                             sizeof(struct iwl_device_cmd),
2337                                             sizeof(void *), 0, NULL);
2338         if (!iwl_tx_cmd_pool)
2339                 return -ENOMEM;
2340
2341         ret = iwlagn_rate_control_register();
2342         if (ret) {
2343                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2344                 goto error_rc_register;
2345         }
2346
2347         ret = iwl_pci_register_driver();
2348         if (ret)
2349                 goto error_pci_register;
2350         return ret;
2351
2352 error_pci_register:
2353         iwlagn_rate_control_unregister();
2354 error_rc_register:
2355         kmem_cache_destroy(iwl_tx_cmd_pool);
2356         return ret;
2357 }
2358
2359 static void __exit iwl_exit(void)
2360 {
2361         iwl_pci_unregister_driver();
2362         iwlagn_rate_control_unregister();
2363         kmem_cache_destroy(iwl_tx_cmd_pool);
2364 }
2365
2366 module_exit(iwl_exit);
2367 module_init(iwl_init);