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/firmware.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/if_arp.h>
  40
  41 #include <net/mac80211.h>
  42
  43 #include <asm/div64.h>
  44
  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-bus.h"
  54 #include "iwl-trans.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 static 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_ucode_callback(const struct firmware *ucode_raw, void *context);
 552
 553 #define UCODE_EXPERIMENTAL_INDEX        100
 554 #define UCODE_EXPERIMENTAL_TAG          "exp"
 555
 556 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 557 {
 558         const char *name_pre = cfg(priv)->fw_name_pre;
 559         char tag[8];
 560
 561         if (first) {
 562 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 563                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 564                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 565         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 566 #endif
 567                 priv->fw_index = cfg(priv)->ucode_api_max;
 568                 sprintf(tag, "%d", priv->fw_index);
 569         } else {
 570                 priv->fw_index--;
 571                 sprintf(tag, "%d", priv->fw_index);
 572         }
 573
 574         if (priv->fw_index < cfg(priv)->ucode_api_min) {
 575                 IWL_ERR(priv, "no suitable firmware found!\n");
 576                 return -ENOENT;
 577         }
 578
 579         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 580
 581         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 582                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 583                                 ? "EXPERIMENTAL " : "",
 584                        priv->firmware_name);
 585
 586         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 587                                        trans(priv)->dev,
 588                                        GFP_KERNEL, priv, iwl_ucode_callback);
 589 }
 590
 591 struct iwlagn_firmware_pieces {
 592         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 593         size_t inst_size, data_size, init_size, init_data_size,
 594                wowlan_inst_size, wowlan_data_size;
 595
 596         u32 build;
 597
 598         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 599         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 600 };
 601
 602 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 603                                        const struct firmware *ucode_raw,
 604                                        struct iwlagn_firmware_pieces *pieces)
 605 {
 606         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 607         u32 api_ver, hdr_size;
 608         const u8 *src;
 609
 610         priv->ucode_ver = le32_to_cpu(ucode->ver);
 611         api_ver = IWL_UCODE_API(priv->ucode_ver);
 612
 613         switch (api_ver) {
 614         default:
 615                 hdr_size = 28;
 616                 if (ucode_raw->size < hdr_size) {
 617                         IWL_ERR(priv, "File size too small!\n");
 618                         return -EINVAL;
 619                 }
 620                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 621                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 622                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 623                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 624                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 625                 src = ucode->u.v2.data;
 626                 break;
 627         case 0:
 628         case 1:
 629         case 2:
 630                 hdr_size = 24;
 631                 if (ucode_raw->size < hdr_size) {
 632                         IWL_ERR(priv, "File size too small!\n");
 633                         return -EINVAL;
 634                 }
 635                 pieces->build = 0;
 636                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 637                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 638                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 639                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 640                 src = ucode->u.v1.data;
 641                 break;
 642         }
 643
 644         /* Verify size of file vs. image size info in file's header */
 645         if (ucode_raw->size != hdr_size + pieces->inst_size +
 646                                 pieces->data_size + pieces->init_size +
 647                                 pieces->init_data_size) {
 648
 649                 IWL_ERR(priv,
 650                         "uCode file size %d does not match expected size\n",
 651                         (int)ucode_raw->size);
 652                 return -EINVAL;
 653         }
 654
 655         pieces->inst = src;
 656         src += pieces->inst_size;
 657         pieces->data = src;
 658         src += pieces->data_size;
 659         pieces->init = src;
 660         src += pieces->init_size;
 661         pieces->init_data = src;
 662         src += pieces->init_data_size;
 663
 664         return 0;
 665 }
 666
 667 static int iwlagn_load_firmware(struct iwl_priv *priv,
 668                                 const struct firmware *ucode_raw,
 669                                 struct iwlagn_firmware_pieces *pieces,
 670                                 struct iwlagn_ucode_capabilities *capa)
 671 {
 672         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 673         struct iwl_ucode_tlv *tlv;
 674         size_t len = ucode_raw->size;
 675         const u8 *data;
 676         int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
 677         int tmp;
 678         u64 alternatives;
 679         u32 tlv_len;
 680         enum iwl_ucode_tlv_type tlv_type;
 681         const u8 *tlv_data;
 682
 683         if (len < sizeof(*ucode)) {
 684                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 685                 return -EINVAL;
 686         }
 687
 688         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 689                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 690                         le32_to_cpu(ucode->magic));
 691                 return -EINVAL;
 692         }
 693
 694         /*
 695          * Check which alternatives are present, and "downgrade"
 696          * when the chosen alternative is not present, warning
 697          * the user when that happens. Some files may not have
 698          * any alternatives, so don't warn in that case.
 699          */
 700         alternatives = le64_to_cpu(ucode->alternatives);
 701         tmp = wanted_alternative;
 702         if (wanted_alternative > 63)
 703                 wanted_alternative = 63;
 704         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 705                 wanted_alternative--;
 706         if (wanted_alternative && wanted_alternative != tmp)
 707                 IWL_WARN(priv,
 708                          "uCode alternative %d not available, choosing %d\n",
 709                          tmp, wanted_alternative);
 710
 711         priv->ucode_ver = le32_to_cpu(ucode->ver);
 712         pieces->build = le32_to_cpu(ucode->build);
 713         data = ucode->data;
 714
 715         len -= sizeof(*ucode);
 716
 717         while (len >= sizeof(*tlv)) {
 718                 u16 tlv_alt;
 719
 720                 len -= sizeof(*tlv);
 721                 tlv = (void *)data;
 722
 723                 tlv_len = le32_to_cpu(tlv->length);
 724                 tlv_type = le16_to_cpu(tlv->type);
 725                 tlv_alt = le16_to_cpu(tlv->alternative);
 726                 tlv_data = tlv->data;
 727
 728                 if (len < tlv_len) {
 729                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 730                                 len, tlv_len);
 731                         return -EINVAL;
 732                 }
 733                 len -= ALIGN(tlv_len, 4);
 734                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 735
 736                 /*
 737                  * Alternative 0 is always valid.
 738                  *
 739                  * Skip alternative TLVs that are not selected.
 740                  */
 741                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 742                         continue;
 743
 744                 switch (tlv_type) {
 745                 case IWL_UCODE_TLV_INST:
 746                         pieces->inst = tlv_data;
 747                         pieces->inst_size = tlv_len;
 748                         break;
 749                 case IWL_UCODE_TLV_DATA:
 750                         pieces->data = tlv_data;
 751                         pieces->data_size = tlv_len;
 752                         break;
 753                 case IWL_UCODE_TLV_INIT:
 754                         pieces->init = tlv_data;
 755                         pieces->init_size = tlv_len;
 756                         break;
 757                 case IWL_UCODE_TLV_INIT_DATA:
 758                         pieces->init_data = tlv_data;
 759                         pieces->init_data_size = tlv_len;
 760                         break;
 761                 case IWL_UCODE_TLV_BOOT:
 762                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 763                         break;
 764                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 765                         if (tlv_len != sizeof(u32))
 766                                 goto invalid_tlv_len;
 767                         capa->max_probe_length =
 768                                         le32_to_cpup((__le32 *)tlv_data);
 769                         break;
 770                 case IWL_UCODE_TLV_PAN:
 771                         if (tlv_len)
 772                                 goto invalid_tlv_len;
 773                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 774                         break;
 775                 case IWL_UCODE_TLV_FLAGS:
 776                         /* must be at least one u32 */
 777                         if (tlv_len < sizeof(u32))
 778                                 goto invalid_tlv_len;
 779                         /* and a proper number of u32s */
 780                         if (tlv_len % sizeof(u32))
 781                                 goto invalid_tlv_len;
 782                         /*
 783                          * This driver only reads the first u32 as
 784                          * right now no more features are defined,
 785                          * if that changes then either the driver
 786                          * will not work with the new firmware, or
 787                          * it'll not take advantage of new features.
 788                          */
 789                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 790                         break;
 791                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 792                         if (tlv_len != sizeof(u32))
 793                                 goto invalid_tlv_len;
 794                         pieces->init_evtlog_ptr =
 795                                         le32_to_cpup((__le32 *)tlv_data);
 796                         break;
 797                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 798                         if (tlv_len != sizeof(u32))
 799                                 goto invalid_tlv_len;
 800                         pieces->init_evtlog_size =
 801                                         le32_to_cpup((__le32 *)tlv_data);
 802                         break;
 803                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 804                         if (tlv_len != sizeof(u32))
 805                                 goto invalid_tlv_len;
 806                         pieces->init_errlog_ptr =
 807                                         le32_to_cpup((__le32 *)tlv_data);
 808                         break;
 809                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 810                         if (tlv_len != sizeof(u32))
 811                                 goto invalid_tlv_len;
 812                         pieces->inst_evtlog_ptr =
 813                                         le32_to_cpup((__le32 *)tlv_data);
 814                         break;
 815                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 816                         if (tlv_len != sizeof(u32))
 817                                 goto invalid_tlv_len;
 818                         pieces->inst_evtlog_size =
 819                                         le32_to_cpup((__le32 *)tlv_data);
 820                         break;
 821                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 822                         if (tlv_len != sizeof(u32))
 823                                 goto invalid_tlv_len;
 824                         pieces->inst_errlog_ptr =
 825                                         le32_to_cpup((__le32 *)tlv_data);
 826                         break;
 827                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 828                         if (tlv_len)
 829                                 goto invalid_tlv_len;
 830                         priv->enhance_sensitivity_table = true;
 831                         break;
 832                 case IWL_UCODE_TLV_WOWLAN_INST:
 833                         pieces->wowlan_inst = tlv_data;
 834                         pieces->wowlan_inst_size = tlv_len;
 835                         break;
 836                 case IWL_UCODE_TLV_WOWLAN_DATA:
 837                         pieces->wowlan_data = tlv_data;
 838                         pieces->wowlan_data_size = tlv_len;
 839                         break;
 840                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 841                         if (tlv_len != sizeof(u32))
 842                                 goto invalid_tlv_len;
 843                         capa->standard_phy_calibration_size =
 844                                         le32_to_cpup((__le32 *)tlv_data);
 845                         break;
 846                 default:
 847                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
 848                         break;
 849                 }
 850         }
 851
 852         if (len) {
 853                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
 854                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
 855                 return -EINVAL;
 856         }
 857
 858         return 0;
 859
 860  invalid_tlv_len:
 861         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 862         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
 863
 864         return -EINVAL;
 865 }
 866
 867 /**
 868  * iwl_ucode_callback - callback when firmware was loaded
 869  *
 870  * If loaded successfully, copies the firmware into buffers
 871  * for the card to fetch (via DMA).
 872  */
 873 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 874 {
 875         struct iwl_priv *priv = context;
 876         struct iwl_ucode_header *ucode;
 877         int err;
 878         struct iwlagn_firmware_pieces pieces;
 879         const unsigned int api_max = cfg(priv)->ucode_api_max;
 880         unsigned int api_ok = cfg(priv)->ucode_api_ok;
 881         const unsigned int api_min = cfg(priv)->ucode_api_min;
 882         u32 api_ver;
 883         char buildstr[25];
 884         u32 build;
 885         struct iwlagn_ucode_capabilities ucode_capa = {
 886                 .max_probe_length = 200,
 887                 .standard_phy_calibration_size =
 888                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
 889         };
 890
 891         if (!api_ok)
 892                 api_ok = api_max;
 893
 894         memset(&pieces, 0, sizeof(pieces));
 895
 896         if (!ucode_raw) {
 897                 if (priv->fw_index <= api_ok)
 898                         IWL_ERR(priv,
 899                                 "request for firmware file '%s' failed.\n",
 900                                 priv->firmware_name);
 901                 goto try_again;
 902         }
 903
 904         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
 905                        priv->firmware_name, ucode_raw->size);
 906
 907         /* Make sure that we got at least the API version number */
 908         if (ucode_raw->size < 4) {
 909                 IWL_ERR(priv, "File size way too small!\n");
 910                 goto try_again;
 911         }
 912
 913         /* Data from ucode file:  header followed by uCode images */
 914         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 915
 916         if (ucode->ver)
 917                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
 918         else
 919                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
 920                                            &ucode_capa);
 921
 922         if (err)
 923                 goto try_again;
 924
 925         api_ver = IWL_UCODE_API(priv->ucode_ver);
 926         build = pieces.build;
 927
 928         /*
 929          * api_ver should match the api version forming part of the
 930          * firmware filename ... but we don't check for that and only rely
 931          * on the API version read from firmware header from here on forward
 932          */
 933         /* no api version check required for experimental uCode */
 934         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 935                 if (api_ver < api_min || api_ver > api_max) {
 936                         IWL_ERR(priv,
 937                                 "Driver unable to support your firmware API. "
 938                                 "Driver supports v%u, firmware is v%u.\n",
 939                                 api_max, api_ver);
 940                         goto try_again;
 941                 }
 942
 943                 if (api_ver < api_ok) {
 944                         if (api_ok != api_max)
 945                                 IWL_ERR(priv, "Firmware has old API version, "
 946                                         "expected v%u through v%u, got v%u.\n",
 947                                         api_ok, api_max, api_ver);
 948                         else
 949                                 IWL_ERR(priv, "Firmware has old API version, "
 950                                         "expected v%u, got v%u.\n",
 951                                         api_max, api_ver);
 952                         IWL_ERR(priv, "New firmware can be obtained from "
 953                                       "http://www.intellinuxwireless.org/.\n");
 954                 }
 955         }
 956
 957         if (build)
 958                 sprintf(buildstr, " build %u%s", build,
 959                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 960                                 ? " (EXP)" : "");
 961         else
 962                 buildstr[0] = '\0';
 963
 964         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
 965                  IWL_UCODE_MAJOR(priv->ucode_ver),
 966                  IWL_UCODE_MINOR(priv->ucode_ver),
 967                  IWL_UCODE_API(priv->ucode_ver),
 968                  IWL_UCODE_SERIAL(priv->ucode_ver),
 969                  buildstr);
 970
 971         snprintf(priv->hw->wiphy->fw_version,
 972                  sizeof(priv->hw->wiphy->fw_version),
 973                  "%u.%u.%u.%u%s",
 974                  IWL_UCODE_MAJOR(priv->ucode_ver),
 975                  IWL_UCODE_MINOR(priv->ucode_ver),
 976                  IWL_UCODE_API(priv->ucode_ver),
 977                  IWL_UCODE_SERIAL(priv->ucode_ver),
 978                  buildstr);
 979
 980         /*
 981          * For any of the failures below (before allocating pci memory)
 982          * we will try to load a version with a smaller API -- maybe the
 983          * user just got a corrupted version of the latest API.
 984          */
 985
 986         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
 987                        priv->ucode_ver);
 988         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
 989                        pieces.inst_size);
 990         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
 991                        pieces.data_size);
 992         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
 993                        pieces.init_size);
 994         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
 995                        pieces.init_data_size);
 996
 997         /* Verify that uCode images will fit in card's SRAM */
 998         if (pieces.inst_size > hw_params(priv).max_inst_size) {
 999                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1000                         pieces.inst_size);
1001                 goto try_again;
1002         }
1003
1004         if (pieces.data_size > hw_params(priv).max_data_size) {
1005                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1006                         pieces.data_size);
1007                 goto try_again;
1008         }
1009
1010         if (pieces.init_size > hw_params(priv).max_inst_size) {
1011                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1012                         pieces.init_size);
1013                 goto try_again;
1014         }
1015
1016         if (pieces.init_data_size > hw_params(priv).max_data_size) {
1017                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1018                         pieces.init_data_size);
1019                 goto try_again;
1020         }
1021
1022         /* Allocate ucode buffers for card's bus-master loading ... */
1023
1024         /* Runtime instructions and 2 copies of data:
1025          * 1) unmodified from disk
1026          * 2) backup cache for save/restore during power-downs */
1027         if (iwl_alloc_fw_desc(trans(priv), &trans(priv)->ucode_rt.code,
1028                               pieces.inst, pieces.inst_size))
1029                 goto err_pci_alloc;
1030         if (iwl_alloc_fw_desc(trans(priv), &trans(priv)->ucode_rt.data,
1031                               pieces.data, pieces.data_size))
1032                 goto err_pci_alloc;
1033
1034         /* Initialization instructions and data */
1035         if (pieces.init_size && pieces.init_data_size) {
1036                 if (iwl_alloc_fw_desc(trans(priv),
1037                                       &trans(priv)->ucode_init.code,
1038                                       pieces.init, pieces.init_size))
1039                         goto err_pci_alloc;
1040                 if (iwl_alloc_fw_desc(trans(priv),
1041                                       &trans(priv)->ucode_init.data,
1042                                       pieces.init_data, pieces.init_data_size))
1043                         goto err_pci_alloc;
1044         }
1045
1046         /* WoWLAN instructions and data */
1047         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1048                 if (iwl_alloc_fw_desc(trans(priv),
1049                                       &trans(priv)->ucode_wowlan.code,
1050                                       pieces.wowlan_inst,
1051                                       pieces.wowlan_inst_size))
1052                         goto err_pci_alloc;
1053                 if (iwl_alloc_fw_desc(trans(priv),
1054                                       &trans(priv)->ucode_wowlan.data,
1055                                       pieces.wowlan_data,
1056                                       pieces.wowlan_data_size))
1057                         goto err_pci_alloc;
1058         }
1059
1060         /* Now that we can no longer fail, copy information */
1061
1062         /*
1063          * The (size - 16) / 12 formula is based on the information recorded
1064          * for each event, which is of mode 1 (including timestamp) for all
1065          * new microcodes that include this information.
1066          */
1067         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1068         if (pieces.init_evtlog_size)
1069                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1070         else
1071                 priv->init_evtlog_size =
1072                         cfg(priv)->base_params->max_event_log_size;
1073         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1074         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1075         if (pieces.inst_evtlog_size)
1076                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1077         else
1078                 priv->inst_evtlog_size =
1079                         cfg(priv)->base_params->max_event_log_size;
1080         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1081 #ifndef CONFIG_IWLWIFI_P2P
1082         ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1083 #endif
1084
1085         priv->new_scan_threshold_behaviour =
1086                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1087
1088         if (!(cfg(priv)->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1089                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1090
1091         /*
1092          * if not PAN, then don't support P2P -- might be a uCode
1093          * packaging bug or due to the eeprom check above
1094          */
1095         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1096                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1097
1098         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1099                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1100                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1101         } else {
1102                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1103                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1104         }
1105         /*
1106          * figure out the offset of chain noise reset and gain commands
1107          * base on the size of standard phy calibration commands table size
1108          */
1109         if (ucode_capa.standard_phy_calibration_size >
1110             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1111                 ucode_capa.standard_phy_calibration_size =
1112                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1113
1114         priv->phy_calib_chain_noise_reset_cmd =
1115                 ucode_capa.standard_phy_calibration_size;
1116         priv->phy_calib_chain_noise_gain_cmd =
1117                 ucode_capa.standard_phy_calibration_size + 1;
1118
1119         /* initialize all valid contexts */
1120         iwl_init_context(priv, ucode_capa.flags);
1121
1122         /**************************************************
1123          * This is still part of probe() in a sense...
1124          *
1125          * 9. Setup and register with mac80211 and debugfs
1126          **************************************************/
1127         err = iwlagn_mac_setup_register(priv, &ucode_capa);
1128         if (err)
1129                 goto out_unbind;
1130
1131         err = iwl_dbgfs_register(priv, DRV_NAME);
1132         if (err)
1133                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1134
1135         /* We have our copies now, allow OS release its copies */
1136         release_firmware(ucode_raw);
1137         complete(&priv->firmware_loading_complete);
1138         return;
1139
1140  try_again:
1141         /* try next, if any */
1142         if (iwl_request_firmware(priv, false))
1143                 goto out_unbind;
1144         release_firmware(ucode_raw);
1145         return;
1146
1147  err_pci_alloc:
1148         IWL_ERR(priv, "failed to allocate pci memory\n");
1149         iwl_dealloc_ucode(trans(priv));
1150  out_unbind:
1151         complete(&priv->firmware_loading_complete);
1152         device_release_driver(trans(priv)->dev);
1153         release_firmware(ucode_raw);
1154 }
1155
1156 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1157 {
1158         struct iwl_ct_kill_config cmd;
1159         struct iwl_ct_kill_throttling_config adv_cmd;
1160         unsigned long flags;
1161         int ret = 0;
1162
1163         spin_lock_irqsave(&priv->shrd->lock, flags);
1164         iwl_write32(trans(priv), CSR_UCODE_DRV_GP1_CLR,
1165                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1166         spin_unlock_irqrestore(&priv->shrd->lock, flags);
1167         priv->thermal_throttle.ct_kill_toggle = false;
1168
1169         if (cfg(priv)->base_params->support_ct_kill_exit) {
1170                 adv_cmd.critical_temperature_enter =
1171                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1172                 adv_cmd.critical_temperature_exit =
1173                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1174
1175                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1176                                        REPLY_CT_KILL_CONFIG_CMD,
1177                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1178                 if (ret)
1179                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1180                 else
1181                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1182                                 "succeeded, critical temperature enter is %d,"
1183                                 "exit is %d\n",
1184                                 hw_params(priv).ct_kill_threshold,
1185                                 hw_params(priv).ct_kill_exit_threshold);
1186         } else {
1187                 cmd.critical_temperature_R =
1188                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1189
1190                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1191                                        REPLY_CT_KILL_CONFIG_CMD,
1192                                        CMD_SYNC, sizeof(cmd), &cmd);
1193                 if (ret)
1194                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1195                 else
1196                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1197                                 "succeeded, "
1198                                 "critical temperature is %d\n",
1199                                 hw_params(priv).ct_kill_threshold);
1200         }
1201 }
1202
1203 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1204 {
1205         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1206         struct iwl_host_cmd cmd = {
1207                 .id = CALIBRATION_CFG_CMD,
1208                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1209                 .data = { &calib_cfg_cmd, },
1210         };
1211
1212         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1213         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1214         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1215
1216         return iwl_trans_send_cmd(trans(priv), &cmd);
1217 }
1218
1219
1220 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1221 {
1222         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1223           .valid = cpu_to_le32(valid_tx_ant),
1224         };
1225
1226         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1227                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1228                 return iwl_trans_send_cmd_pdu(trans(priv),
1229                                         TX_ANT_CONFIGURATION_CMD,
1230                                         CMD_SYNC,
1231                                         sizeof(struct iwl_tx_ant_config_cmd),
1232                                         &tx_ant_cmd);
1233         } else {
1234                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1235                 return -EOPNOTSUPP;
1236         }
1237 }
1238
1239 /**
1240  * iwl_alive_start - called after REPLY_ALIVE notification received
1241  *                   from protocol/runtime uCode (initialization uCode's
1242  *                   Alive gets handled by iwl_init_alive_start()).
1243  */
1244 int iwl_alive_start(struct iwl_priv *priv)
1245 {
1246         int ret = 0;
1247         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1248
1249         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1250
1251         /* After the ALIVE response, we can send host commands to the uCode */
1252         set_bit(STATUS_ALIVE, &priv->shrd->status);
1253
1254         /* Enable watchdog to monitor the driver tx queues */
1255         iwl_setup_watchdog(priv);
1256
1257         if (iwl_is_rfkill(priv->shrd))
1258                 return -ERFKILL;
1259
1260         if (priv->event_log.ucode_trace) {
1261                 /* start collecting data now */
1262                 mod_timer(&priv->ucode_trace, jiffies);
1263         }
1264
1265         /* download priority table before any calibration request */
1266         if (cfg(priv)->bt_params &&
1267             cfg(priv)->bt_params->advanced_bt_coexist) {
1268                 /* Configure Bluetooth device coexistence support */
1269                 if (cfg(priv)->bt_params->bt_sco_disable)
1270                         priv->bt_enable_pspoll = false;
1271                 else
1272                         priv->bt_enable_pspoll = true;
1273
1274                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1275                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1276                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1277                 iwlagn_send_advance_bt_config(priv);
1278                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1279                 priv->cur_rssi_ctx = NULL;
1280
1281                 iwl_send_prio_tbl(trans(priv));
1282
1283                 /* FIXME: w/a to force change uCode BT state machine */
1284                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
1285                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1286                 if (ret)
1287                         return ret;
1288                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
1289                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1290                 if (ret)
1291                         return ret;
1292         } else {
1293                 /*
1294                  * default is 2-wire BT coexexistence support
1295                  */
1296                 iwl_send_bt_config(priv);
1297         }
1298
1299         /*
1300          * Perform runtime calibrations, including DC calibration.
1301          */
1302         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
1303
1304         ieee80211_wake_queues(priv->hw);
1305
1306         priv->active_rate = IWL_RATES_MASK;
1307
1308         /* Configure Tx antenna selection based on H/W config */
1309         iwlagn_send_tx_ant_config(priv, cfg(priv)->valid_tx_ant);
1310
1311         if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1312                 struct iwl_rxon_cmd *active_rxon =
1313                                 (struct iwl_rxon_cmd *)&ctx->active;
1314                 /* apply any changes in staging */
1315                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1316                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1317         } else {
1318                 struct iwl_rxon_context *tmp;
1319                 /* Initialize our rx_config data */
1320                 for_each_context(priv, tmp)
1321                         iwl_connection_init_rx_config(priv, tmp);
1322
1323                 iwlagn_set_rxon_chain(priv, ctx);
1324         }
1325
1326         if (!priv->shrd->wowlan) {
1327                 /* WoWLAN ucode will not reply in the same way, skip it */
1328                 iwl_reset_run_time_calib(priv);
1329         }
1330
1331         set_bit(STATUS_READY, &priv->shrd->status);
1332
1333         /* Configure the adapter for unassociated operation */
1334         ret = iwlagn_commit_rxon(priv, ctx);
1335         if (ret)
1336                 return ret;
1337
1338         /* At this point, the NIC is initialized and operational */
1339         iwl_rf_kill_ct_config(priv);
1340
1341         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1342
1343         return iwl_power_update_mode(priv, true);
1344 }
1345
1346 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1347
1348 void __iwl_down(struct iwl_priv *priv)
1349 {
1350         int exit_pending;
1351
1352         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1353
1354         iwl_scan_cancel_timeout(priv, 200);
1355
1356         /*
1357          * If active, scanning won't cancel it, so say it expired.
1358          * No race since we hold the mutex here and a new one
1359          * can't come in at this time.
1360          */
1361         ieee80211_remain_on_channel_expired(priv->hw);
1362
1363         exit_pending =
1364                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1365
1366         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1367          * to prevent rearm timer */
1368         del_timer_sync(&priv->watchdog);
1369
1370         iwl_clear_ucode_stations(priv, NULL);
1371         iwl_dealloc_bcast_stations(priv);
1372         iwl_clear_driver_stations(priv);
1373
1374         /* reset BT coex data */
1375         priv->bt_status = 0;
1376         priv->cur_rssi_ctx = NULL;
1377         priv->bt_is_sco = 0;
1378         if (cfg(priv)->bt_params)
1379                 priv->bt_traffic_load =
1380                          cfg(priv)->bt_params->bt_init_traffic_load;
1381         else
1382                 priv->bt_traffic_load = 0;
1383         priv->bt_full_concurrent = false;
1384         priv->bt_ci_compliance = 0;
1385
1386         /* Wipe out the EXIT_PENDING status bit if we are not actually
1387          * exiting the module */
1388         if (!exit_pending)
1389                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1390
1391         if (priv->mac80211_registered)
1392                 ieee80211_stop_queues(priv->hw);
1393
1394         iwl_trans_stop_device(trans(priv));
1395
1396         /* Clear out all status bits but a few that are stable across reset */
1397         priv->shrd->status &=
1398                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1399                                 STATUS_RF_KILL_HW |
1400                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1401                                 STATUS_GEO_CONFIGURED |
1402                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1403                                 STATUS_FW_ERROR |
1404                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1405                                 STATUS_EXIT_PENDING;
1406
1407         dev_kfree_skb(priv->beacon_skb);
1408         priv->beacon_skb = NULL;
1409 }
1410
1411 void iwl_down(struct iwl_priv *priv)
1412 {
1413         mutex_lock(&priv->shrd->mutex);
1414         __iwl_down(priv);
1415         mutex_unlock(&priv->shrd->mutex);
1416
1417         iwl_cancel_deferred_work(priv);
1418 }
1419
1420 /*****************************************************************************
1421  *
1422  * Workqueue callbacks
1423  *
1424  *****************************************************************************/
1425
1426 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1427 {
1428         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1429                         run_time_calib_work);
1430
1431         mutex_lock(&priv->shrd->mutex);
1432
1433         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1434             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1435                 mutex_unlock(&priv->shrd->mutex);
1436                 return;
1437         }
1438
1439         if (priv->start_calib) {
1440                 iwl_chain_noise_calibration(priv);
1441                 iwl_sensitivity_calibration(priv);
1442         }
1443
1444         mutex_unlock(&priv->shrd->mutex);
1445 }
1446
1447 void iwlagn_prepare_restart(struct iwl_priv *priv)
1448 {
1449         struct iwl_rxon_context *ctx;
1450         bool bt_full_concurrent;
1451         u8 bt_ci_compliance;
1452         u8 bt_load;
1453         u8 bt_status;
1454         bool bt_is_sco;
1455
1456         lockdep_assert_held(&priv->shrd->mutex);
1457
1458         for_each_context(priv, ctx)
1459                 ctx->vif = NULL;
1460         priv->is_open = 0;
1461
1462         /*
1463          * __iwl_down() will clear the BT status variables,
1464          * which is correct, but when we restart we really
1465          * want to keep them so restore them afterwards.
1466          *
1467          * The restart process will later pick them up and
1468          * re-configure the hw when we reconfigure the BT
1469          * command.
1470          */
1471         bt_full_concurrent = priv->bt_full_concurrent;
1472         bt_ci_compliance = priv->bt_ci_compliance;
1473         bt_load = priv->bt_traffic_load;
1474         bt_status = priv->bt_status;
1475         bt_is_sco = priv->bt_is_sco;
1476
1477         __iwl_down(priv);
1478
1479         priv->bt_full_concurrent = bt_full_concurrent;
1480         priv->bt_ci_compliance = bt_ci_compliance;
1481         priv->bt_traffic_load = bt_load;
1482         priv->bt_status = bt_status;
1483         priv->bt_is_sco = bt_is_sco;
1484 }
1485
1486 static void iwl_bg_restart(struct work_struct *data)
1487 {
1488         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1489
1490         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1491                 return;
1492
1493         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1494                 mutex_lock(&priv->shrd->mutex);
1495                 iwlagn_prepare_restart(priv);
1496                 mutex_unlock(&priv->shrd->mutex);
1497                 iwl_cancel_deferred_work(priv);
1498                 ieee80211_restart_hw(priv->hw);
1499         } else {
1500                 WARN_ON(1);
1501         }
1502 }
1503
1504
1505
1506
1507 void iwlagn_disable_roc(struct iwl_priv *priv)
1508 {
1509         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1510
1511         lockdep_assert_held(&priv->shrd->mutex);
1512
1513         if (!priv->hw_roc_setup)
1514                 return;
1515
1516         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1517         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1518
1519         priv->hw_roc_channel = NULL;
1520
1521         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1522
1523         iwlagn_commit_rxon(priv, ctx);
1524
1525         ctx->is_active = false;
1526         priv->hw_roc_setup = false;
1527 }
1528
1529 static void iwlagn_disable_roc_work(struct work_struct *work)
1530 {
1531         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1532                                              hw_roc_disable_work.work);
1533
1534         mutex_lock(&priv->shrd->mutex);
1535         iwlagn_disable_roc(priv);
1536         mutex_unlock(&priv->shrd->mutex);
1537 }
1538
1539 /*****************************************************************************
1540  *
1541  * driver setup and teardown
1542  *
1543  *****************************************************************************/
1544
1545 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1546 {
1547         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
1548
1549         init_waitqueue_head(&priv->shrd->wait_command_queue);
1550
1551         INIT_WORK(&priv->restart, iwl_bg_restart);
1552         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1553         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1554         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1555         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1556         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1557         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1558                           iwlagn_disable_roc_work);
1559
1560         iwl_setup_scan_deferred_work(priv);
1561
1562         if (cfg(priv)->lib->bt_setup_deferred_work)
1563                 cfg(priv)->lib->bt_setup_deferred_work(priv);
1564
1565         init_timer(&priv->statistics_periodic);
1566         priv->statistics_periodic.data = (unsigned long)priv;
1567         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1568
1569         init_timer(&priv->ucode_trace);
1570         priv->ucode_trace.data = (unsigned long)priv;
1571         priv->ucode_trace.function = iwl_bg_ucode_trace;
1572
1573         init_timer(&priv->watchdog);
1574         priv->watchdog.data = (unsigned long)priv;
1575         priv->watchdog.function = iwl_bg_watchdog;
1576 }
1577
1578 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
1579 {
1580         if (cfg(priv)->lib->cancel_deferred_work)
1581                 cfg(priv)->lib->cancel_deferred_work(priv);
1582
1583         cancel_work_sync(&priv->run_time_calib_work);
1584         cancel_work_sync(&priv->beacon_update);
1585
1586         iwl_cancel_scan_deferred_work(priv);
1587
1588         cancel_work_sync(&priv->bt_full_concurrency);
1589         cancel_work_sync(&priv->bt_runtime_config);
1590         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1591
1592         del_timer_sync(&priv->statistics_periodic);
1593         del_timer_sync(&priv->ucode_trace);
1594 }
1595
1596 static void iwl_init_hw_rates(struct iwl_priv *priv,
1597                               struct ieee80211_rate *rates)
1598 {
1599         int i;
1600
1601         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1602                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1603                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1604                 rates[i].hw_value_short = i;
1605                 rates[i].flags = 0;
1606                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1607                         /*
1608                          * If CCK != 1M then set short preamble rate flag.
1609                          */
1610                         rates[i].flags |=
1611                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1612                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1613                 }
1614         }
1615 }
1616
1617 static int iwl_init_drv(struct iwl_priv *priv)
1618 {
1619         int ret;
1620
1621         spin_lock_init(&priv->shrd->sta_lock);
1622
1623         mutex_init(&priv->shrd->mutex);
1624
1625         INIT_LIST_HEAD(&trans(priv)->calib_results);
1626
1627         priv->ieee_channels = NULL;
1628         priv->ieee_rates = NULL;
1629         priv->band = IEEE80211_BAND_2GHZ;
1630
1631         priv->iw_mode = NL80211_IFTYPE_STATION;
1632         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1633         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1634         priv->agg_tids_count = 0;
1635
1636         /* initialize force reset */
1637         priv->force_reset[IWL_RF_RESET].reset_duration =
1638                 IWL_DELAY_NEXT_FORCE_RF_RESET;
1639         priv->force_reset[IWL_FW_RESET].reset_duration =
1640                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1641
1642         priv->rx_statistics_jiffies = jiffies;
1643
1644         /* Choose which receivers/antennas to use */
1645         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1646
1647         iwl_init_scan_params(priv);
1648
1649         /* init bt coex */
1650         if (cfg(priv)->bt_params &&
1651             cfg(priv)->bt_params->advanced_bt_coexist) {
1652                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1653                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1654                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1655                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1656                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1657                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1658         }
1659
1660         ret = iwl_init_channel_map(priv);
1661         if (ret) {
1662                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1663                 goto err;
1664         }
1665
1666         ret = iwl_init_geos(priv);
1667         if (ret) {
1668                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1669                 goto err_free_channel_map;
1670         }
1671         iwl_init_hw_rates(priv, priv->ieee_rates);
1672
1673         return 0;
1674
1675 err_free_channel_map:
1676         iwl_free_channel_map(priv);
1677 err:
1678         return ret;
1679 }
1680
1681 static void iwl_uninit_drv(struct iwl_priv *priv)
1682 {
1683         iwl_free_geos(priv);
1684         iwl_free_channel_map(priv);
1685         if (priv->tx_cmd_pool)
1686                 kmem_cache_destroy(priv->tx_cmd_pool);
1687         kfree(priv->scan_cmd);
1688         kfree(priv->beacon_cmd);
1689         kfree(rcu_dereference_raw(priv->noa_data));
1690 #ifdef CONFIG_IWLWIFI_DEBUGFS
1691         kfree(priv->wowlan_sram);
1692 #endif
1693 }
1694
1695 /* Size of one Rx buffer in host DRAM */
1696 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1697 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1698
1699 static int iwl_set_hw_params(struct iwl_priv *priv)
1700 {
1701         if (iwlagn_mod_params.amsdu_size_8K)
1702                 hw_params(priv).rx_page_order =
1703                         get_order(IWL_RX_BUF_SIZE_8K);
1704         else
1705                 hw_params(priv).rx_page_order =
1706                         get_order(IWL_RX_BUF_SIZE_4K);
1707
1708         if (iwlagn_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
1709                 cfg(priv)->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1710
1711         hw_params(priv).num_ampdu_queues =
1712                 cfg(priv)->base_params->num_of_ampdu_queues;
1713         hw_params(priv).shadow_reg_enable =
1714                 cfg(priv)->base_params->shadow_reg_enable;
1715         hw_params(priv).sku = cfg(priv)->sku;
1716         hw_params(priv).wd_timeout = cfg(priv)->base_params->wd_timeout;
1717
1718         /* Device-specific setup */
1719         return cfg(priv)->lib->set_hw_params(priv);
1720 }
1721
1722
1723
1724 static void iwl_debug_config(struct iwl_priv *priv)
1725 {
1726         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1727 #ifdef CONFIG_IWLWIFI_DEBUG
1728                 "enabled\n");
1729 #else
1730                 "disabled\n");
1731 #endif
1732         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1733 #ifdef CONFIG_IWLWIFI_DEBUGFS
1734                 "enabled\n");
1735 #else
1736                 "disabled\n");
1737 #endif
1738         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1739 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1740                 "enabled\n");
1741 #else
1742                 "disabled\n");
1743 #endif
1744
1745         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1746 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1747                 "enabled\n");
1748 #else
1749                 "disabled\n");
1750 #endif
1751         dev_printk(KERN_INFO, trans(priv)->dev, "CONFIG_IWLWIFI_P2P "
1752 #ifdef CONFIG_IWLWIFI_P2P
1753                 "enabled\n");
1754 #else
1755                 "disabled\n");
1756 #endif
1757 }
1758
1759 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
1760                 struct iwl_cfg *cfg)
1761 {
1762         int err = 0;
1763         struct iwl_priv *priv;
1764         struct ieee80211_hw *hw;
1765         u16 num_mac;
1766
1767         /************************
1768          * 1. Allocating HW data
1769          ************************/
1770         hw = iwl_alloc_all();
1771         if (!hw) {
1772                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1773                 err = -ENOMEM;
1774                 goto out;
1775         }
1776
1777         priv = hw->priv;
1778         priv->shrd = bus->shrd;
1779         priv->shrd->priv = priv;
1780
1781         /* At this point both hw and priv are allocated. */
1782
1783         SET_IEEE80211_DEV(hw, trans(priv)->dev);
1784
1785         /* show what debugging capabilities we have */
1786         iwl_debug_config(priv);
1787
1788         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1789         cfg(priv) = cfg;
1790
1791         /* is antenna coupling more than 35dB ? */
1792         priv->bt_ant_couple_ok =
1793                 (iwlagn_mod_params.ant_coupling >
1794                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1795                         true : false;
1796
1797         /* enable/disable bt channel inhibition */
1798         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1799         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1800                        (priv->bt_ch_announce) ? "On" : "Off");
1801
1802         if (iwl_alloc_traffic_mem(priv))
1803                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1804
1805         /* these spin locks will be used in apm_ops.init and EEPROM access
1806          * we should init now
1807          */
1808         spin_lock_init(&trans(priv)->reg_lock);
1809         spin_lock_init(&priv->shrd->lock);
1810
1811         /***********************
1812          * 3. Read REV register
1813          ***********************/
1814         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1815                 cfg(priv)->name, trans(priv)->hw_rev);
1816
1817         err = iwl_trans_start_hw(trans(priv));
1818         if (err)
1819                 goto out_free_traffic_mem;
1820
1821         /*****************
1822          * 4. Read EEPROM
1823          *****************/
1824         /* Read the EEPROM */
1825         err = iwl_eeprom_init(priv, trans(priv)->hw_rev);
1826         /* Reset chip to save power until we load uCode during "up". */
1827         iwl_trans_stop_hw(trans(priv));
1828         if (err) {
1829                 IWL_ERR(priv, "Unable to init EEPROM\n");
1830                 goto out_free_traffic_mem;
1831         }
1832         err = iwl_eeprom_check_version(priv);
1833         if (err)
1834                 goto out_free_eeprom;
1835
1836         err = iwl_eeprom_check_sku(priv);
1837         if (err)
1838                 goto out_free_eeprom;
1839
1840         /* extract MAC Address */
1841         iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1842         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1843         priv->hw->wiphy->addresses = priv->addresses;
1844         priv->hw->wiphy->n_addresses = 1;
1845         num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1846         if (num_mac > 1) {
1847                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1848                        ETH_ALEN);
1849                 priv->addresses[1].addr[5]++;
1850                 priv->hw->wiphy->n_addresses++;
1851         }
1852
1853         /************************
1854          * 5. Setup HW constants
1855          ************************/
1856         if (iwl_set_hw_params(priv)) {
1857                 err = -ENOENT;
1858                 IWL_ERR(priv, "failed to set hw parameters\n");
1859                 goto out_free_eeprom;
1860         }
1861
1862         /*******************
1863          * 6. Setup priv
1864          *******************/
1865
1866         err = iwl_init_drv(priv);
1867         if (err)
1868                 goto out_free_eeprom;
1869         /* At this point both hw and priv are initialized. */
1870
1871         /********************
1872          * 7. Setup services
1873          ********************/
1874         iwl_setup_deferred_work(priv);
1875         iwl_setup_rx_handlers(priv);
1876         iwl_testmode_init(priv);
1877
1878         iwl_power_initialize(priv);
1879         iwl_tt_initialize(priv);
1880
1881         init_completion(&priv->firmware_loading_complete);
1882
1883         err = iwl_request_firmware(priv, true);
1884         if (err)
1885                 goto out_destroy_workqueue;
1886
1887         return 0;
1888
1889 out_destroy_workqueue:
1890         destroy_workqueue(priv->shrd->workqueue);
1891         priv->shrd->workqueue = NULL;
1892         iwl_uninit_drv(priv);
1893 out_free_eeprom:
1894         iwl_eeprom_free(priv->shrd);
1895 out_free_traffic_mem:
1896         iwl_free_traffic_mem(priv);
1897         ieee80211_free_hw(priv->hw);
1898 out:
1899         return err;
1900 }
1901
1902 void __devexit iwl_remove(struct iwl_priv * priv)
1903 {
1904         wait_for_completion(&priv->firmware_loading_complete);
1905
1906         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1907
1908         iwl_dbgfs_unregister(priv);
1909
1910         /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1911          * to be called and iwl_down since we are removing the device
1912          * we need to set STATUS_EXIT_PENDING bit.
1913          */
1914         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1915
1916         iwl_testmode_cleanup(priv);
1917         iwlagn_mac_unregister(priv);
1918
1919         iwl_tt_exit(priv);
1920
1921         /*This will stop the queues, move the device to low power state */
1922         iwl_trans_stop_device(trans(priv));
1923
1924         iwl_dealloc_ucode(trans(priv));
1925
1926         iwl_eeprom_free(priv->shrd);
1927
1928         /*netif_stop_queue(dev); */
1929         flush_workqueue(priv->shrd->workqueue);
1930
1931         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1932          * priv->shrd->workqueue... so we can't take down the workqueue
1933          * until now... */
1934         destroy_workqueue(priv->shrd->workqueue);
1935         priv->shrd->workqueue = NULL;
1936         iwl_free_traffic_mem(priv);
1937
1938         iwl_uninit_drv(priv);
1939
1940         dev_kfree_skb(priv->beacon_skb);
1941
1942         ieee80211_free_hw(priv->hw);
1943 }
1944
1945
1946 /*****************************************************************************
1947  *
1948  * driver and module entry point
1949  *
1950  *****************************************************************************/
1951 static int __init iwl_init(void)
1952 {
1953
1954         int ret;
1955         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1956         pr_info(DRV_COPYRIGHT "\n");
1957
1958         ret = iwlagn_rate_control_register();
1959         if (ret) {
1960                 pr_err("Unable to register rate control algorithm: %d\n", ret);
1961                 return ret;
1962         }
1963
1964         ret = iwl_pci_register_driver();
1965
1966         if (ret)
1967                 goto error_register;
1968         return ret;
1969
1970 error_register:
1971         iwlagn_rate_control_unregister();
1972         return ret;
1973 }
1974
1975 static void __exit iwl_exit(void)
1976 {
1977         iwl_pci_unregister_driver();
1978         iwlagn_rate_control_unregister();
1979 }
1980
1981 module_exit(iwl_exit);
1982 module_init(iwl_init);
1983
1984 #ifdef CONFIG_IWLWIFI_DEBUG
1985 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1986                    S_IRUGO | S_IWUSR);
1987 MODULE_PARM_DESC(debug, "debug output mask");
1988 #endif
1989
1990 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1991 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
1992 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
1993 MODULE_PARM_DESC(queues_num, "number of hw queues.");
1994 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, uint, S_IRUGO);
1995 MODULE_PARM_DESC(11n_disable,
1996         "disable 11n functionality, bitmap: 1: full, 2: agg TX, 4: agg RX");
1997 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
1998                    int, S_IRUGO);
1999 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2000 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2001 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2002
2003 module_param_named(ucode_alternative,
2004                    iwlagn_mod_params.wanted_ucode_alternative,
2005                    int, S_IRUGO);
2006 MODULE_PARM_DESC(ucode_alternative,
2007                  "specify ucode alternative to use from ucode file");
2008
2009 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2010                    int, S_IRUGO);
2011 MODULE_PARM_DESC(antenna_coupling,
2012                  "specify antenna coupling in dB (defualt: 0 dB)");
2013
2014 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2015                    bool, S_IRUGO);
2016 MODULE_PARM_DESC(bt_ch_inhibition,
2017                  "Enable BT channel inhibition (default: enable)");
2018
2019 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2020 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2021
2022 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2023 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2024
2025 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2026 MODULE_PARM_DESC(wd_disable,
2027                 "Disable stuck queue watchdog timer 0=system default, "
2028                 "1=disable, 2=enable (default: 0)");
2029
2030 /*
2031  * set bt_coex_active to true, uCode will do kill/defer
2032  * every time the priority line is asserted (BT is sending signals on the
2033  * priority line in the PCIx).
2034  * set bt_coex_active to false, uCode will ignore the BT activity and
2035  * perform the normal operation
2036  *
2037  * User might experience transmit issue on some platform due to WiFi/BT
2038  * co-exist problem. The possible behaviors are:
2039  *   Able to scan and finding all the available AP
2040  *   Not able to associate with any AP
2041  * On those platforms, WiFi communication can be restored by set
2042  * "bt_coex_active" module parameter to "false"
2043  *
2044  * default: bt_coex_active = true (BT_COEX_ENABLE)
2045  */
2046 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2047                 bool, S_IRUGO);
2048 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2049
2050 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2051 MODULE_PARM_DESC(led_mode, "0=system default, "
2052                 "1=On(RF On)/Off(RF Off), 2=blinking, 3=Off (default: 0)");
2053
2054 module_param_named(power_save, iwlagn_mod_params.power_save,
2055                 bool, S_IRUGO);
2056 MODULE_PARM_DESC(power_save,
2057                  "enable WiFi power management (default: disable)");
2058
2059 module_param_named(power_level, iwlagn_mod_params.power_level,
2060                 int, S_IRUGO);
2061 MODULE_PARM_DESC(power_level,
2062                  "default power save level (range from 1 - 5, default: 1)");
2063
2064 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2065                 bool, S_IRUGO);
2066 MODULE_PARM_DESC(auto_agg,
2067                  "enable agg w/o check traffic load (default: enable)");
2068
2069 /*
2070  * For now, keep using power level 1 instead of automatically
2071  * adjusting ...
2072  */
2073 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2074                 bool, S_IRUGO);
2075 MODULE_PARM_DESC(no_sleep_autoadjust,
2076                  "don't automatically adjust sleep level "
2077                  "according to maximum network latency (default: true)");