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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/delay.h>
  34 #include <linux/sched.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/etherdevice.h>
  38 #include <linux/if_arp.h>
  39
  40 #include <net/mac80211.h>
  41
  42 #include <asm/div64.h>
  43
  44 #include "iwl-ucode.h"
  45 #include "iwl-eeprom.h"
  46 #include "iwl-wifi.h"
  47 #include "iwl-dev.h"
  48 #include "iwl-core.h"
  49 #include "iwl-io.h"
  50 #include "iwl-agn-calib.h"
  51 #include "iwl-agn.h"
  52 #include "iwl-shared.h"
  53 #include "iwl-trans.h"
  54 #include "iwl-op-mode.h"
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  */
  65 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  66
  67 #ifdef CONFIG_IWLWIFI_DEBUG
  68 #define VD "d"
  69 #else
  70 #define VD
  71 #endif
  72
  73 #define DRV_VERSION     IWLWIFI_VERSION VD
  74
  75
  76 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  77 MODULE_VERSION(DRV_VERSION);
  78 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  79 MODULE_LICENSE("GPL");
  80 MODULE_ALIAS("iwlagn");
  81
  82 void iwl_update_chain_flags(struct iwl_priv *priv)
  83 {
  84         struct iwl_rxon_context *ctx;
  85
  86         for_each_context(priv, ctx) {
  87                 iwlagn_set_rxon_chain(priv, ctx);
  88                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  89                         iwlagn_commit_rxon(priv, ctx);
  90         }
  91 }
  92
  93 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  94 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  95                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  96                                u8 *beacon, u32 frame_size)
  97 {
  98         u16 tim_idx;
  99         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 100
 101         /*
 102          * The index is relative to frame start but we start looking at the
 103          * variable-length part of the beacon.
 104          */
 105         tim_idx = mgmt->u.beacon.variable - beacon;
 106
 107         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 108         while ((tim_idx < (frame_size - 2)) &&
 109                         (beacon[tim_idx] != WLAN_EID_TIM))
 110                 tim_idx += beacon[tim_idx+1] + 2;
 111
 112         /* If TIM field was found, set variables */
 113         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 114                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 115                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 116         } else
 117                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 118 }
 119
 120 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 121 {
 122         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 123         struct iwl_host_cmd cmd = {
 124                 .id = REPLY_TX_BEACON,
 125                 .flags = CMD_SYNC,
 126         };
 127         struct ieee80211_tx_info *info;
 128         u32 frame_size;
 129         u32 rate_flags;
 130         u32 rate;
 131
 132         /*
 133          * We have to set up the TX command, the TX Beacon command, and the
 134          * beacon contents.
 135          */
 136
 137         lockdep_assert_held(&priv->shrd->mutex);
 138
 139         if (!priv->beacon_ctx) {
 140                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 141                 return 0;
 142         }
 143
 144         if (WARN_ON(!priv->beacon_skb))
 145                 return -EINVAL;
 146
 147         /* Allocate beacon command */
 148         if (!priv->beacon_cmd)
 149                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 150         tx_beacon_cmd = priv->beacon_cmd;
 151         if (!tx_beacon_cmd)
 152                 return -ENOMEM;
 153
 154         frame_size = priv->beacon_skb->len;
 155
 156         /* Set up TX command fields */
 157         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 158         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 159         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 160         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 161                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 162
 163         /* Set up TX beacon command fields */
 164         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 165                            frame_size);
 166
 167         /* Set up packet rate and flags */
 168         info = IEEE80211_SKB_CB(priv->beacon_skb);
 169
 170         /*
 171          * Let's set up the rate at least somewhat correctly;
 172          * it will currently not actually be used by the uCode,
 173          * it uses the broadcast station's rate instead.
 174          */
 175         if (info->control.rates[0].idx < 0 ||
 176             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 177                 rate = 0;
 178         else
 179                 rate = info->control.rates[0].idx;
 180
 181         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 182                                               hw_params(priv).valid_tx_ant);
 183         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 184
 185         /* In mac80211, rates for 5 GHz start at 0 */
 186         if (info->band == IEEE80211_BAND_5GHZ)
 187                 rate += IWL_FIRST_OFDM_RATE;
 188         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 189                 rate_flags |= RATE_MCS_CCK_MSK;
 190
 191         tx_beacon_cmd->tx.rate_n_flags =
 192                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 193
 194         /* Submit command */
 195         cmd.len[0] = sizeof(*tx_beacon_cmd);
 196         cmd.data[0] = tx_beacon_cmd;
 197         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 198         cmd.len[1] = frame_size;
 199         cmd.data[1] = priv->beacon_skb->data;
 200         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 201
 202         return iwl_trans_send_cmd(trans(priv), &cmd);
 203 }
 204
 205 static void iwl_bg_beacon_update(struct work_struct *work)
 206 {
 207         struct iwl_priv *priv =
 208                 container_of(work, struct iwl_priv, beacon_update);
 209         struct sk_buff *beacon;
 210
 211         mutex_lock(&priv->shrd->mutex);
 212         if (!priv->beacon_ctx) {
 213                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 214                 goto out;
 215         }
 216
 217         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 218                 /*
 219                  * The ucode will send beacon notifications even in
 220                  * IBSS mode, but we don't want to process them. But
 221                  * we need to defer the type check to here due to
 222                  * requiring locking around the beacon_ctx access.
 223                  */
 224                 goto out;
 225         }
 226
 227         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 228         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 229         if (!beacon) {
 230                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 231                 goto out;
 232         }
 233
 234         /* new beacon skb is allocated every time; dispose previous.*/
 235         dev_kfree_skb(priv->beacon_skb);
 236
 237         priv->beacon_skb = beacon;
 238
 239         iwlagn_send_beacon_cmd(priv);
 240  out:
 241         mutex_unlock(&priv->shrd->mutex);
 242 }
 243
 244 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 245 {
 246         struct iwl_priv *priv =
 247                 container_of(work, struct iwl_priv, bt_runtime_config);
 248
 249         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 250                 return;
 251
 252         /* dont send host command if rf-kill is on */
 253         if (!iwl_is_ready_rf(priv->shrd))
 254                 return;
 255         iwlagn_send_advance_bt_config(priv);
 256 }
 257
 258 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 259 {
 260         struct iwl_priv *priv =
 261                 container_of(work, struct iwl_priv, bt_full_concurrency);
 262         struct iwl_rxon_context *ctx;
 263
 264         mutex_lock(&priv->shrd->mutex);
 265
 266         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 267                 goto out;
 268
 269         /* dont send host command if rf-kill is on */
 270         if (!iwl_is_ready_rf(priv->shrd))
 271                 goto out;
 272
 273         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 274                        priv->bt_full_concurrent ?
 275                        "full concurrency" : "3-wire");
 276
 277         /*
 278          * LQ & RXON updated cmds must be sent before BT Config cmd
 279          * to avoid 3-wire collisions
 280          */
 281         for_each_context(priv, ctx) {
 282                 iwlagn_set_rxon_chain(priv, ctx);
 283                 iwlagn_commit_rxon(priv, ctx);
 284         }
 285
 286         iwlagn_send_advance_bt_config(priv);
 287 out:
 288         mutex_unlock(&priv->shrd->mutex);
 289 }
 290
 291 /**
 292  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 293  *
 294  * This callback is provided in order to send a statistics request.
 295  *
 296  * This timer function is continually reset to execute within
 297  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 298  * was received.  We need to ensure we receive the statistics in order
 299  * to update the temperature used for calibrating the TXPOWER.
 300  */
 301 static void iwl_bg_statistics_periodic(unsigned long data)
 302 {
 303         struct iwl_priv *priv = (struct iwl_priv *)data;
 304
 305         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 306                 return;
 307
 308         /* dont send host command if rf-kill is on */
 309         if (!iwl_is_ready_rf(priv->shrd))
 310                 return;
 311
 312         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 313 }
 314
 315
 316 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 317                                         u32 start_idx, u32 num_events,
 318                                         u32 capacity, u32 mode)
 319 {
 320         u32 i;
 321         u32 ptr;        /* SRAM byte address of log data */
 322         u32 ev, time, data; /* event log data */
 323         unsigned long reg_flags;
 324
 325         if (mode == 0)
 326                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 327         else
 328                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 329
 330         /* Make sure device is powered up for SRAM reads */
 331         spin_lock_irqsave(&trans(priv)->reg_lock, reg_flags);
 332         if (iwl_grab_nic_access(trans(priv))) {
 333                 spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 334                 return;
 335         }
 336
 337         /* Set starting address; reads will auto-increment */
 338         iwl_write32(trans(priv), HBUS_TARG_MEM_RADDR, ptr);
 339         rmb();
 340
 341         /*
 342          * Refuse to read more than would have fit into the log from
 343          * the current start_idx. This used to happen due to the race
 344          * described below, but now WARN because the code below should
 345          * prevent it from happening here.
 346          */
 347         if (WARN_ON(num_events > capacity - start_idx))
 348                 num_events = capacity - start_idx;
 349
 350         /*
 351          * "time" is actually "data" for mode 0 (no timestamp).
 352          * place event id # at far right for easier visual parsing.
 353          */
 354         for (i = 0; i < num_events; i++) {
 355                 ev = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 356                 time = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 357                 if (mode == 0) {
 358                         trace_iwlwifi_dev_ucode_cont_event(priv, 0, time, ev);
 359                 } else {
 360                         data = iwl_read32(trans(priv), HBUS_TARG_MEM_RDAT);
 361                         trace_iwlwifi_dev_ucode_cont_event(priv, time,
 362                                                            data, ev);
 363                 }
 364         }
 365         /* Allow device to power down */
 366         iwl_release_nic_access(trans(priv));
 367         spin_unlock_irqrestore(&trans(priv)->reg_lock, reg_flags);
 368 }
 369
 370 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 371 {
 372         u32 capacity;   /* event log capacity in # entries */
 373         struct {
 374                 u32 capacity;
 375                 u32 mode;
 376                 u32 wrap_counter;
 377                 u32 write_counter;
 378         } __packed read;
 379         u32 base;       /* SRAM byte address of event log header */
 380         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 381         u32 num_wraps;  /* # times uCode wrapped to top of log */
 382         u32 next_entry; /* index of next entry to be written by uCode */
 383
 384         base = priv->shrd->device_pointers.log_event_table;
 385         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 386                 iwl_read_targ_mem_words(trans(priv), base, &read, sizeof(read));
 387
 388                 capacity = read.capacity;
 389                 mode = read.mode;
 390                 num_wraps = read.wrap_counter;
 391                 next_entry = read.write_counter;
 392         } else
 393                 return;
 394
 395         /*
 396          * Unfortunately, the uCode doesn't use temporary variables.
 397          * Therefore, it can happen that we read next_entry == capacity,
 398          * which really means next_entry == 0.
 399          */
 400         if (unlikely(next_entry == capacity))
 401                 next_entry = 0;
 402         /*
 403          * Additionally, the uCode increases the write pointer before
 404          * the wraps counter, so if the write pointer is smaller than
 405          * the old write pointer (wrap occurred) but we read that no
 406          * wrap occurred, we actually read between the next_entry and
 407          * num_wraps update (this does happen in practice!!) -- take
 408          * that into account by increasing num_wraps.
 409          */
 410         if (unlikely(next_entry < priv->event_log.next_entry &&
 411                      num_wraps == priv->event_log.num_wraps))
 412                 num_wraps++;
 413
 414         if (num_wraps == priv->event_log.num_wraps) {
 415                 iwl_print_cont_event_trace(
 416                         priv, base, priv->event_log.next_entry,
 417                         next_entry - priv->event_log.next_entry,
 418                         capacity, mode);
 419
 420                 priv->event_log.non_wraps_count++;
 421         } else {
 422                 if (num_wraps - priv->event_log.num_wraps > 1)
 423                         priv->event_log.wraps_more_count++;
 424                 else
 425                         priv->event_log.wraps_once_count++;
 426
 427                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 428                                 num_wraps - priv->event_log.num_wraps,
 429                                 next_entry, priv->event_log.next_entry);
 430
 431                 if (next_entry < priv->event_log.next_entry) {
 432                         iwl_print_cont_event_trace(
 433                                 priv, base, priv->event_log.next_entry,
 434                                 capacity - priv->event_log.next_entry,
 435                                 capacity, mode);
 436
 437                         iwl_print_cont_event_trace(
 438                                 priv, base, 0, next_entry, capacity, mode);
 439                 } else {
 440                         iwl_print_cont_event_trace(
 441                                 priv, base, next_entry,
 442                                 capacity - next_entry,
 443                                 capacity, mode);
 444
 445                         iwl_print_cont_event_trace(
 446                                 priv, base, 0, next_entry, capacity, mode);
 447                 }
 448         }
 449
 450         priv->event_log.num_wraps = num_wraps;
 451         priv->event_log.next_entry = next_entry;
 452 }
 453
 454 /**
 455  * iwl_bg_ucode_trace - Timer callback to log ucode event
 456  *
 457  * The timer is continually set to execute every
 458  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 459  * this function is to perform continuous uCode event logging operation
 460  * if enabled
 461  */
 462 static void iwl_bg_ucode_trace(unsigned long data)
 463 {
 464         struct iwl_priv *priv = (struct iwl_priv *)data;
 465
 466         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 467                 return;
 468
 469         if (priv->event_log.ucode_trace) {
 470                 iwl_continuous_event_trace(priv);
 471                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 472                 mod_timer(&priv->ucode_trace,
 473                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 474         }
 475 }
 476
 477 static void iwl_bg_tx_flush(struct work_struct *work)
 478 {
 479         struct iwl_priv *priv =
 480                 container_of(work, struct iwl_priv, tx_flush);
 481
 482         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 483                 return;
 484
 485         /* do nothing if rf-kill is on */
 486         if (!iwl_is_ready_rf(priv->shrd))
 487                 return;
 488
 489         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 490         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 491 }
 492
 493 void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 494 {
 495         int i;
 496
 497         /*
 498          * The default context is always valid,
 499          * the PAN context depends on uCode.
 500          */
 501         priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 502         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 503                 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 504
 505         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 506                 priv->contexts[i].ctxid = i;
 507
 508         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 509         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 510         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 511         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 512         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 513         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 514         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 515         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 516         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 517         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 518                 BIT(NL80211_IFTYPE_ADHOC);
 519         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 520                 BIT(NL80211_IFTYPE_STATION);
 521         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 522         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 523         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 524         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 525
 526         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 527         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 528                 REPLY_WIPAN_RXON_TIMING;
 529         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 530                 REPLY_WIPAN_RXON_ASSOC;
 531         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 532         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 533         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 534         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 535         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 536         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 537                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 538
 539         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 540                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 541                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 542                         BIT(NL80211_IFTYPE_P2P_GO);
 543
 544         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 545         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 546         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 547
 548         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 549 }
 550
 551 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 552 {
 553         struct iwl_ct_kill_config cmd;
 554         struct iwl_ct_kill_throttling_config adv_cmd;
 555         int ret = 0;
 556
 557         iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
 558                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 559
 560         priv->thermal_throttle.ct_kill_toggle = false;
 561
 562         if (cfg(priv)->base_params->support_ct_kill_exit) {
 563                 adv_cmd.critical_temperature_enter =
 564                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
 565                 adv_cmd.critical_temperature_exit =
 566                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
 567
 568                 ret = iwl_trans_send_cmd_pdu(trans(priv),
 569                                        REPLY_CT_KILL_CONFIG_CMD,
 570                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 571                 if (ret)
 572                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 573                 else
 574                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 575                                 "succeeded, critical temperature enter is %d,"
 576                                 "exit is %d\n",
 577                                 hw_params(priv).ct_kill_threshold,
 578                                 hw_params(priv).ct_kill_exit_threshold);
 579         } else {
 580                 cmd.critical_temperature_R =
 581                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
 582
 583                 ret = iwl_trans_send_cmd_pdu(trans(priv),
 584                                        REPLY_CT_KILL_CONFIG_CMD,
 585                                        CMD_SYNC, sizeof(cmd), &cmd);
 586                 if (ret)
 587                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 588                 else
 589                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 590                                 "succeeded, "
 591                                 "critical temperature is %d\n",
 592                                 hw_params(priv).ct_kill_threshold);
 593         }
 594 }
 595
 596 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 597 {
 598         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 599         struct iwl_host_cmd cmd = {
 600                 .id = CALIBRATION_CFG_CMD,
 601                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 602                 .data = { &calib_cfg_cmd, },
 603         };
 604
 605         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 606         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 607         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 608
 609         return iwl_trans_send_cmd(trans(priv), &cmd);
 610 }
 611
 612
 613 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 614 {
 615         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 616           .valid = cpu_to_le32(valid_tx_ant),
 617         };
 618
 619         if (IWL_UCODE_API(nic(priv)->fw.ucode_ver) > 1) {
 620                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 621                 return iwl_trans_send_cmd_pdu(trans(priv),
 622                                         TX_ANT_CONFIGURATION_CMD,
 623                                         CMD_SYNC,
 624                                         sizeof(struct iwl_tx_ant_config_cmd),
 625                                         &tx_ant_cmd);
 626         } else {
 627                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 628                 return -EOPNOTSUPP;
 629         }
 630 }
 631
 632 /**
 633  * iwl_alive_start - called after REPLY_ALIVE notification received
 634  *                   from protocol/runtime uCode (initialization uCode's
 635  *                   Alive gets handled by iwl_init_alive_start()).
 636  */
 637 int iwl_alive_start(struct iwl_priv *priv)
 638 {
 639         int ret = 0;
 640         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 641
 642         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 643
 644         /* After the ALIVE response, we can send host commands to the uCode */
 645         set_bit(STATUS_ALIVE, &priv->shrd->status);
 646
 647         /* Enable watchdog to monitor the driver tx queues */
 648         iwl_setup_watchdog(priv);
 649
 650         if (iwl_is_rfkill(priv->shrd))
 651                 return -ERFKILL;
 652
 653         if (priv->event_log.ucode_trace) {
 654                 /* start collecting data now */
 655                 mod_timer(&priv->ucode_trace, jiffies);
 656         }
 657
 658         /* download priority table before any calibration request */
 659         if (cfg(priv)->bt_params &&
 660             cfg(priv)->bt_params->advanced_bt_coexist) {
 661                 /* Configure Bluetooth device coexistence support */
 662                 if (cfg(priv)->bt_params->bt_sco_disable)
 663                         priv->bt_enable_pspoll = false;
 664                 else
 665                         priv->bt_enable_pspoll = true;
 666
 667                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 668                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 669                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 670                 iwlagn_send_advance_bt_config(priv);
 671                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 672                 priv->cur_rssi_ctx = NULL;
 673
 674                 iwl_send_prio_tbl(trans(priv));
 675
 676                 /* FIXME: w/a to force change uCode BT state machine */
 677                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
 678                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 679                 if (ret)
 680                         return ret;
 681                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
 682                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 683                 if (ret)
 684                         return ret;
 685         } else {
 686                 /*
 687                  * default is 2-wire BT coexexistence support
 688                  */
 689                 iwl_send_bt_config(priv);
 690         }
 691
 692         /*
 693          * Perform runtime calibrations, including DC calibration.
 694          */
 695         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 696
 697         ieee80211_wake_queues(priv->hw);
 698
 699         priv->active_rate = IWL_RATES_MASK;
 700
 701         /* Configure Tx antenna selection based on H/W config */
 702         iwlagn_send_tx_ant_config(priv, hw_params(priv).valid_tx_ant);
 703
 704         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 705                 struct iwl_rxon_cmd *active_rxon =
 706                                 (struct iwl_rxon_cmd *)&ctx->active;
 707                 /* apply any changes in staging */
 708                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 709                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 710         } else {
 711                 struct iwl_rxon_context *tmp;
 712                 /* Initialize our rx_config data */
 713                 for_each_context(priv, tmp)
 714                         iwl_connection_init_rx_config(priv, tmp);
 715
 716                 iwlagn_set_rxon_chain(priv, ctx);
 717         }
 718
 719         if (!priv->wowlan) {
 720                 /* WoWLAN ucode will not reply in the same way, skip it */
 721                 iwl_reset_run_time_calib(priv);
 722         }
 723
 724         set_bit(STATUS_READY, &priv->shrd->status);
 725
 726         /* Configure the adapter for unassociated operation */
 727         ret = iwlagn_commit_rxon(priv, ctx);
 728         if (ret)
 729                 return ret;
 730
 731         /* At this point, the NIC is initialized and operational */
 732         iwl_rf_kill_ct_config(priv);
 733
 734         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 735
 736         return iwl_power_update_mode(priv, true);
 737 }
 738
 739 /**
 740  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 741  * @priv: iwl priv struct
 742  *
 743  * This is called during iwl_down() to make sure that in the case
 744  * we're coming there from a hardware restart mac80211 will be
 745  * able to reconfigure stations -- if we're getting there in the
 746  * normal down flow then the stations will already be cleared.
 747  */
 748 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 749 {
 750         struct iwl_rxon_context *ctx;
 751
 752         spin_lock_bh(&priv->sta_lock);
 753         memset(priv->stations, 0, sizeof(priv->stations));
 754         priv->num_stations = 0;
 755
 756         priv->ucode_key_table = 0;
 757
 758         for_each_context(priv, ctx) {
 759                 /*
 760                  * Remove all key information that is not stored as part
 761                  * of station information since mac80211 may not have had
 762                  * a chance to remove all the keys. When device is
 763                  * reconfigured by mac80211 after an error all keys will
 764                  * be reconfigured.
 765                  */
 766                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 767                 ctx->key_mapping_keys = 0;
 768         }
 769
 770         spin_unlock_bh(&priv->sta_lock);
 771 }
 772
 773 void iwl_down(struct iwl_priv *priv)
 774 {
 775         int exit_pending;
 776
 777         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 778
 779         lockdep_assert_held(&priv->shrd->mutex);
 780
 781         iwl_scan_cancel_timeout(priv, 200);
 782
 783         /*
 784          * If active, scanning won't cancel it, so say it expired.
 785          * No race since we hold the mutex here and a new one
 786          * can't come in at this time.
 787          */
 788         ieee80211_remain_on_channel_expired(priv->hw);
 789
 790         exit_pending =
 791                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
 792
 793         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
 794          * to prevent rearm timer */
 795         del_timer_sync(&priv->watchdog);
 796
 797         iwl_clear_ucode_stations(priv, NULL);
 798         iwl_dealloc_bcast_stations(priv);
 799         iwl_clear_driver_stations(priv);
 800
 801         /* reset BT coex data */
 802         priv->bt_status = 0;
 803         priv->cur_rssi_ctx = NULL;
 804         priv->bt_is_sco = 0;
 805         if (cfg(priv)->bt_params)
 806                 priv->bt_traffic_load =
 807                          cfg(priv)->bt_params->bt_init_traffic_load;
 808         else
 809                 priv->bt_traffic_load = 0;
 810         priv->bt_full_concurrent = false;
 811         priv->bt_ci_compliance = 0;
 812
 813         /* Wipe out the EXIT_PENDING status bit if we are not actually
 814          * exiting the module */
 815         if (!exit_pending)
 816                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
 817
 818         if (priv->mac80211_registered)
 819                 ieee80211_stop_queues(priv->hw);
 820
 821         iwl_trans_stop_device(trans(priv));
 822
 823         /* Clear out all status bits but a few that are stable across reset */
 824         priv->shrd->status &=
 825                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
 826                                 STATUS_RF_KILL_HW |
 827                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
 828                                 STATUS_GEO_CONFIGURED |
 829                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
 830                                 STATUS_FW_ERROR |
 831                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
 832                                 STATUS_EXIT_PENDING;
 833
 834         dev_kfree_skb(priv->beacon_skb);
 835         priv->beacon_skb = NULL;
 836 }
 837
 838 /*****************************************************************************
 839  *
 840  * Workqueue callbacks
 841  *
 842  *****************************************************************************/
 843
 844 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 845 {
 846         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 847                         run_time_calib_work);
 848
 849         mutex_lock(&priv->shrd->mutex);
 850
 851         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
 852             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
 853                 mutex_unlock(&priv->shrd->mutex);
 854                 return;
 855         }
 856
 857         if (priv->start_calib) {
 858                 iwl_chain_noise_calibration(priv);
 859                 iwl_sensitivity_calibration(priv);
 860         }
 861
 862         mutex_unlock(&priv->shrd->mutex);
 863 }
 864
 865 void iwlagn_prepare_restart(struct iwl_priv *priv)
 866 {
 867         struct iwl_rxon_context *ctx;
 868         bool bt_full_concurrent;
 869         u8 bt_ci_compliance;
 870         u8 bt_load;
 871         u8 bt_status;
 872         bool bt_is_sco;
 873
 874         lockdep_assert_held(&priv->shrd->mutex);
 875
 876         for_each_context(priv, ctx)
 877                 ctx->vif = NULL;
 878         priv->is_open = 0;
 879
 880         /*
 881          * __iwl_down() will clear the BT status variables,
 882          * which is correct, but when we restart we really
 883          * want to keep them so restore them afterwards.
 884          *
 885          * The restart process will later pick them up and
 886          * re-configure the hw when we reconfigure the BT
 887          * command.
 888          */
 889         bt_full_concurrent = priv->bt_full_concurrent;
 890         bt_ci_compliance = priv->bt_ci_compliance;
 891         bt_load = priv->bt_traffic_load;
 892         bt_status = priv->bt_status;
 893         bt_is_sco = priv->bt_is_sco;
 894
 895         iwl_down(priv);
 896
 897         priv->bt_full_concurrent = bt_full_concurrent;
 898         priv->bt_ci_compliance = bt_ci_compliance;
 899         priv->bt_traffic_load = bt_load;
 900         priv->bt_status = bt_status;
 901         priv->bt_is_sco = bt_is_sco;
 902 }
 903
 904 static void iwl_bg_restart(struct work_struct *data)
 905 {
 906         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
 907
 908         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 909                 return;
 910
 911         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
 912                 mutex_lock(&priv->shrd->mutex);
 913                 iwlagn_prepare_restart(priv);
 914                 mutex_unlock(&priv->shrd->mutex);
 915                 iwl_cancel_deferred_work(priv);
 916                 ieee80211_restart_hw(priv->hw);
 917         } else {
 918                 WARN_ON(1);
 919         }
 920 }
 921
 922
 923
 924
 925 void iwlagn_disable_roc(struct iwl_priv *priv)
 926 {
 927         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
 928
 929         lockdep_assert_held(&priv->shrd->mutex);
 930
 931         if (!priv->hw_roc_setup)
 932                 return;
 933
 934         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
 935         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 936
 937         priv->hw_roc_channel = NULL;
 938
 939         memset(ctx->staging.node_addr, 0, ETH_ALEN);
 940
 941         iwlagn_commit_rxon(priv, ctx);
 942
 943         ctx->is_active = false;
 944         priv->hw_roc_setup = false;
 945 }
 946
 947 static void iwlagn_disable_roc_work(struct work_struct *work)
 948 {
 949         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 950                                              hw_roc_disable_work.work);
 951
 952         mutex_lock(&priv->shrd->mutex);
 953         iwlagn_disable_roc(priv);
 954         mutex_unlock(&priv->shrd->mutex);
 955 }
 956
 957 /*****************************************************************************
 958  *
 959  * driver setup and teardown
 960  *
 961  *****************************************************************************/
 962
 963 static void iwl_setup_deferred_work(struct iwl_priv *priv)
 964 {
 965         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
 966
 967         init_waitqueue_head(&priv->shrd->wait_command_queue);
 968
 969         INIT_WORK(&priv->restart, iwl_bg_restart);
 970         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
 971         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
 972         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
 973         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
 974         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
 975         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
 976                           iwlagn_disable_roc_work);
 977
 978         iwl_setup_scan_deferred_work(priv);
 979
 980         if (cfg(priv)->lib->bt_setup_deferred_work)
 981                 cfg(priv)->lib->bt_setup_deferred_work(priv);
 982
 983         init_timer(&priv->statistics_periodic);
 984         priv->statistics_periodic.data = (unsigned long)priv;
 985         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
 986
 987         init_timer(&priv->ucode_trace);
 988         priv->ucode_trace.data = (unsigned long)priv;
 989         priv->ucode_trace.function = iwl_bg_ucode_trace;
 990
 991         init_timer(&priv->watchdog);
 992         priv->watchdog.data = (unsigned long)priv;
 993         priv->watchdog.function = iwl_bg_watchdog;
 994 }
 995
 996 void iwl_cancel_deferred_work(struct iwl_priv *priv)
 997 {
 998         if (cfg(priv)->lib->cancel_deferred_work)
 999                 cfg(priv)->lib->cancel_deferred_work(priv);
1000
1001         cancel_work_sync(&priv->run_time_calib_work);
1002         cancel_work_sync(&priv->beacon_update);
1003
1004         iwl_cancel_scan_deferred_work(priv);
1005
1006         cancel_work_sync(&priv->bt_full_concurrency);
1007         cancel_work_sync(&priv->bt_runtime_config);
1008         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1009
1010         del_timer_sync(&priv->statistics_periodic);
1011         del_timer_sync(&priv->ucode_trace);
1012 }
1013
1014 static void iwl_init_hw_rates(struct iwl_priv *priv,
1015                               struct ieee80211_rate *rates)
1016 {
1017         int i;
1018
1019         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1020                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1021                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1022                 rates[i].hw_value_short = i;
1023                 rates[i].flags = 0;
1024                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1025                         /*
1026                          * If CCK != 1M then set short preamble rate flag.
1027                          */
1028                         rates[i].flags |=
1029                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1030                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1031                 }
1032         }
1033 }
1034
1035 static int iwl_init_drv(struct iwl_priv *priv)
1036 {
1037         int ret;
1038
1039         spin_lock_init(&priv->sta_lock);
1040
1041         mutex_init(&priv->shrd->mutex);
1042
1043         INIT_LIST_HEAD(&trans(priv)->calib_results);
1044
1045         priv->ieee_channels = NULL;
1046         priv->ieee_rates = NULL;
1047         priv->band = IEEE80211_BAND_2GHZ;
1048
1049         priv->iw_mode = NL80211_IFTYPE_STATION;
1050         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1051         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1052         priv->agg_tids_count = 0;
1053
1054         /* initialize force reset */
1055         priv->force_reset[IWL_RF_RESET].reset_duration =
1056                 IWL_DELAY_NEXT_FORCE_RF_RESET;
1057         priv->force_reset[IWL_FW_RESET].reset_duration =
1058                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1059
1060         priv->rx_statistics_jiffies = jiffies;
1061
1062         /* Choose which receivers/antennas to use */
1063         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1064
1065         iwl_init_scan_params(priv);
1066
1067         /* init bt coex */
1068         if (cfg(priv)->bt_params &&
1069             cfg(priv)->bt_params->advanced_bt_coexist) {
1070                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1071                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1072                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1073                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1074                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1075                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1076         }
1077
1078         ret = iwl_init_channel_map(priv);
1079         if (ret) {
1080                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1081                 goto err;
1082         }
1083
1084         ret = iwl_init_geos(priv);
1085         if (ret) {
1086                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1087                 goto err_free_channel_map;
1088         }
1089         iwl_init_hw_rates(priv, priv->ieee_rates);
1090
1091         return 0;
1092
1093 err_free_channel_map:
1094         iwl_free_channel_map(priv);
1095 err:
1096         return ret;
1097 }
1098
1099 static void iwl_uninit_drv(struct iwl_priv *priv)
1100 {
1101         iwl_free_geos(priv);
1102         iwl_free_channel_map(priv);
1103         if (priv->tx_cmd_pool)
1104                 kmem_cache_destroy(priv->tx_cmd_pool);
1105         kfree(priv->scan_cmd);
1106         kfree(priv->beacon_cmd);
1107         kfree(rcu_dereference_raw(priv->noa_data));
1108 #ifdef CONFIG_IWLWIFI_DEBUGFS
1109         kfree(priv->wowlan_sram);
1110 #endif
1111 }
1112
1113 /* Size of one Rx buffer in host DRAM */
1114 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1115 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1116
1117 static void iwl_set_hw_params(struct iwl_priv *priv)
1118 {
1119         if (iwlagn_mod_params.amsdu_size_8K)
1120                 hw_params(priv).rx_page_order =
1121                         get_order(IWL_RX_BUF_SIZE_8K);
1122         else
1123                 hw_params(priv).rx_page_order =
1124                         get_order(IWL_RX_BUF_SIZE_4K);
1125
1126         if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1127                 hw_params(priv).sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1128
1129         hw_params(priv).num_ampdu_queues =
1130                 cfg(priv)->base_params->num_of_ampdu_queues;
1131         hw_params(priv).shadow_reg_enable =
1132                 cfg(priv)->base_params->shadow_reg_enable;
1133         hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1134
1135         /* Device-specific setup */
1136         cfg(priv)->lib->set_hw_params(priv);
1137 }
1138
1139
1140
1141 static void iwl_debug_config(struct iwl_priv *priv)
1142 {
1143         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1144 #ifdef CONFIG_IWLWIFI_DEBUG
1145                 "enabled\n");
1146 #else
1147                 "disabled\n");
1148 #endif
1149         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1150 #ifdef CONFIG_IWLWIFI_DEBUGFS
1151                 "enabled\n");
1152 #else
1153                 "disabled\n");
1154 #endif
1155         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1156 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1157                 "enabled\n");
1158 #else
1159                 "disabled\n");
1160 #endif
1161
1162         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1163 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1164                 "enabled\n");
1165 #else
1166                 "disabled\n");
1167 #endif
1168         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1169 #ifdef CONFIG_IWLWIFI_P2P
1170                 "enabled\n");
1171 #else
1172                 "disabled\n");
1173 #endif
1174 }
1175
1176 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans)
1177 {
1178         struct iwl_fw *fw = &nic(trans)->fw;
1179         int err = 0;
1180         struct iwl_priv *priv;
1181         struct ieee80211_hw *hw;
1182         struct iwl_op_mode *op_mode;
1183         u16 num_mac;
1184         u32 ucode_flags;
1185
1186         /************************
1187          * 1. Allocating HW data
1188          ************************/
1189         hw = iwl_alloc_all();
1190         if (!hw) {
1191                 pr_err("%s: Cannot allocate network device\n",
1192                                 cfg(trans)->name);
1193                 err = -ENOMEM;
1194                 goto out;
1195         }
1196
1197         op_mode = hw->priv;
1198         op_mode->ops = &iwl_dvm_ops;
1199         priv = IWL_OP_MODE_GET_DVM(op_mode);
1200         priv->shrd = trans->shrd;
1201         priv->shrd->priv = priv;
1202
1203         iwl_trans_configure(trans(priv), op_mode);
1204
1205         /* At this point both hw and priv are allocated. */
1206
1207         SET_IEEE80211_DEV(priv->hw, trans(priv)->dev);
1208
1209         /* show what debugging capabilities we have */
1210         iwl_debug_config(priv);
1211
1212         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1213
1214         /* is antenna coupling more than 35dB ? */
1215         priv->bt_ant_couple_ok =
1216                 (iwlagn_mod_params.ant_coupling >
1217                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1218                         true : false;
1219
1220         /* enable/disable bt channel inhibition */
1221         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1222         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1223                        (priv->bt_ch_announce) ? "On" : "Off");
1224
1225         if (iwl_alloc_traffic_mem(priv))
1226                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1227
1228         /* these spin locks will be used in apm_ops.init and EEPROM access
1229          * we should init now
1230          */
1231         spin_lock_init(&trans(priv)->reg_lock);
1232         spin_lock_init(&priv->statistics.lock);
1233
1234         /***********************
1235          * 3. Read REV register
1236          ***********************/
1237         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1238                 cfg(priv)->name, trans(priv)->hw_rev);
1239
1240         err = iwl_trans_start_hw(trans(priv));
1241         if (err)
1242                 goto out_free_traffic_mem;
1243
1244         /*****************
1245          * 4. Read EEPROM
1246          *****************/
1247         /* Read the EEPROM */
1248         err = iwl_eeprom_init(trans(priv), trans(priv)->hw_rev);
1249         /* Reset chip to save power until we load uCode during "up". */
1250         iwl_trans_stop_hw(trans(priv));
1251         if (err) {
1252                 IWL_ERR(priv, "Unable to init EEPROM\n");
1253                 goto out_free_traffic_mem;
1254         }
1255         err = iwl_eeprom_check_version(priv);
1256         if (err)
1257                 goto out_free_eeprom;
1258
1259         err = iwl_eeprom_init_hw_params(priv);
1260         if (err)
1261                 goto out_free_eeprom;
1262
1263         /* extract MAC Address */
1264         iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1265         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1266         priv->hw->wiphy->addresses = priv->addresses;
1267         priv->hw->wiphy->n_addresses = 1;
1268         num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1269         if (num_mac > 1) {
1270                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1271                        ETH_ALEN);
1272                 priv->addresses[1].addr[5]++;
1273                 priv->hw->wiphy->n_addresses++;
1274         }
1275
1276         /************************
1277          * 5. Setup HW constants
1278          ************************/
1279         iwl_set_hw_params(priv);
1280
1281         ucode_flags = fw->ucode_capa.flags;
1282
1283 #ifndef CONFIG_IWLWIFI_P2P
1284         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1285 #endif
1286         if (!(hw_params(priv).sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1287                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1288
1289         /*
1290          * if not PAN, then don't support P2P -- might be a uCode
1291          * packaging bug or due to the eeprom check above
1292          */
1293         if (!(ucode_flags & IWL_UCODE_TLV_FLAGS_PAN))
1294                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1295
1296
1297         /*******************
1298          * 6. Setup priv
1299          *******************/
1300
1301         err = iwl_init_drv(priv);
1302         if (err)
1303                 goto out_free_eeprom;
1304         /* At this point both hw and priv are initialized. */
1305
1306         /********************
1307          * 7. Setup services
1308          ********************/
1309         iwl_setup_deferred_work(priv);
1310         iwl_setup_rx_handlers(priv);
1311         iwl_testmode_init(priv);
1312
1313         iwl_power_initialize(priv);
1314         iwl_tt_initialize(priv);
1315
1316         snprintf(priv->hw->wiphy->fw_version,
1317                  sizeof(priv->hw->wiphy->fw_version),
1318                  "%s", fw->fw_version);
1319
1320         priv->new_scan_threshold_behaviour =
1321                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1322
1323         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1324                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1325                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1326         } else {
1327                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1328                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1329         }
1330
1331         priv->phy_calib_chain_noise_reset_cmd =
1332                 fw->ucode_capa.standard_phy_calibration_size;
1333         priv->phy_calib_chain_noise_gain_cmd =
1334                 fw->ucode_capa.standard_phy_calibration_size + 1;
1335
1336         /* initialize all valid contexts */
1337         iwl_init_context(priv, ucode_flags);
1338
1339         /**************************************************
1340          * This is still part of probe() in a sense...
1341          *
1342          * 9. Setup and register with mac80211 and debugfs
1343          **************************************************/
1344         err = iwlagn_mac_setup_register(priv, &fw->ucode_capa);
1345         if (err)
1346                 goto out_destroy_workqueue;
1347
1348         err = iwl_dbgfs_register(priv, DRV_NAME);
1349         if (err)
1350                 IWL_ERR(priv,
1351                         "failed to create debugfs files. Ignoring error: %d\n",
1352                         err);
1353
1354         return op_mode;
1355
1356 out_destroy_workqueue:
1357         destroy_workqueue(priv->workqueue);
1358         priv->workqueue = NULL;
1359         iwl_uninit_drv(priv);
1360 out_free_eeprom:
1361         iwl_eeprom_free(priv->shrd);
1362 out_free_traffic_mem:
1363         iwl_free_traffic_mem(priv);
1364         ieee80211_free_hw(priv->hw);
1365 out:
1366         op_mode = NULL;
1367         return op_mode;
1368 }
1369
1370 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1371 {
1372         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1373
1374         wait_for_completion(&nic(priv)->request_firmware_complete);
1375
1376         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1377
1378         iwl_dbgfs_unregister(priv);
1379
1380         iwl_testmode_cleanup(priv);
1381         iwlagn_mac_unregister(priv);
1382
1383         iwl_tt_exit(priv);
1384
1385         /*This will stop the queues, move the device to low power state */
1386         iwl_trans_stop_device(trans(priv));
1387
1388         iwl_eeprom_free(priv->shrd);
1389
1390         /*netif_stop_queue(dev); */
1391         flush_workqueue(priv->workqueue);
1392
1393         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1394          * priv->workqueue... so we can't take down the workqueue
1395          * until now... */
1396         destroy_workqueue(priv->workqueue);
1397         priv->workqueue = NULL;
1398         iwl_free_traffic_mem(priv);
1399
1400         iwl_uninit_drv(priv);
1401
1402         dev_kfree_skb(priv->beacon_skb);
1403
1404         ieee80211_free_hw(priv->hw);
1405 }
1406
1407 const struct iwl_op_mode_ops iwl_dvm_ops = {
1408         .start = iwl_op_mode_dvm_start,
1409         .stop = iwl_op_mode_dvm_stop,
1410         .rx = iwl_rx_dispatch,
1411         .queue_full = iwl_stop_sw_queue,
1412         .queue_not_full = iwl_wake_sw_queue,
1413         .hw_rf_kill = iwl_set_hw_rfkill_state,
1414         .free_skb = iwl_free_skb,
1415         .nic_error = iwl_nic_error,
1416 };
1417
1418 /*****************************************************************************
1419  *
1420  * driver and module entry point
1421  *
1422  *****************************************************************************/
1423 static int __init iwl_init(void)
1424 {
1425
1426         int ret;
1427         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1428         pr_info(DRV_COPYRIGHT "\n");
1429
1430         ret = iwlagn_rate_control_register();
1431         if (ret) {
1432                 pr_err("Unable to register rate control algorithm: %d\n", ret);
1433                 return ret;
1434         }
1435
1436         ret = iwl_pci_register_driver();
1437
1438         if (ret)
1439                 goto error_register;
1440         return ret;
1441
1442 error_register:
1443         iwlagn_rate_control_unregister();
1444         return ret;
1445 }
1446
1447 static void __exit iwl_exit(void)
1448 {
1449         iwl_pci_unregister_driver();
1450         iwlagn_rate_control_unregister();
1451 }
1452
1453 module_exit(iwl_exit);
1454 module_init(iwl_init);
1455
1456 #ifdef CONFIG_IWLWIFI_DEBUG
1457 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1458                    S_IRUGO | S_IWUSR);
1459 MODULE_PARM_DESC(debug, "debug output mask");
1460 #endif
1461
1462 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1463 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1464 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1465 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1466 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1467 MODULE_PARM_DESC(11n_disable,
1468         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1469 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1470                    int, S_IRUGO);
1471 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
1472 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
1473 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
1474
1475 module_param_named(ucode_alternative,
1476                    iwlagn_mod_params.wanted_ucode_alternative,
1477                    int, S_IRUGO);
1478 MODULE_PARM_DESC(ucode_alternative,
1479                  "specify ucode alternative to use from ucode file");
1480
1481 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
1482                    int, S_IRUGO);
1483 MODULE_PARM_DESC(antenna_coupling,
1484                  "specify antenna coupling in dB (defualt: 0 dB)");
1485
1486 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
1487                    bool, S_IRUGO);
1488 MODULE_PARM_DESC(bt_ch_inhibition,
1489                  "Enable BT channel inhibition (default: enable)");
1490
1491 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
1492 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
1493
1494 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
1495 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
1496
1497 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
1498 MODULE_PARM_DESC(wd_disable,
1499                 "Disable stuck queue watchdog timer 0=system default, "
1500                 "1=disable, 2=enable (default: 0)");
1501
1502 /*
1503  * set bt_coex_active to true, uCode will do kill/defer
1504  * every time the priority line is asserted (BT is sending signals on the
1505  * priority line in the PCIx).
1506  * set bt_coex_active to false, uCode will ignore the BT activity and
1507  * perform the normal operation
1508  *
1509  * User might experience transmit issue on some platform due to WiFi/BT
1510  * co-exist problem. The possible behaviors are:
1511  *   Able to scan and finding all the available AP
1512  *   Not able to associate with any AP
1513  * On those platforms, WiFi communication can be restored by set
1514  * "bt_coex_active" module parameter to "false"
1515  *
1516  * default: bt_coex_active = true (BT_COEX_ENABLE)
1517  */
1518 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
1519                 bool, S_IRUGO);
1520 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
1521
1522 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
1523 MODULE_PARM_DESC(led_mode, "0=system default, "
1524                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
1525
1526 module_param_named(power_save, iwlagn_mod_params.power_save,
1527                 bool, S_IRUGO);
1528 MODULE_PARM_DESC(power_save,
1529                  "enable WiFi power management (default: disable)");
1530
1531 module_param_named(power_level, iwlagn_mod_params.power_level,
1532                 int, S_IRUGO);
1533 MODULE_PARM_DESC(power_level,
1534                  "default power save level (range from 1 - 5, default: 1)");
1535
1536 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
1537                 bool, S_IRUGO);
1538 MODULE_PARM_DESC(auto_agg,
1539                  "enable agg w/o check traffic load (default: enable)");
1540
1541 /*
1542  * For now, keep using power level 1 instead of automatically
1543  * adjusting ...
1544  */
1545 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
1546                 bool, S_IRUGO);
1547 MODULE_PARM_DESC(no_sleep_autoadjust,
1548                  "don't automatically adjust sleep level "
1549                  "according to maximum network latency (default: true)");