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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 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/dma-mapping.h>
  34 #include <linux/delay.h>
  35 #include <linux/sched.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/firmware.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/if_arp.h>
  41
  42 #include <net/mac80211.h>
  43
  44 #include <asm/div64.h>
  45
  46 #include "iwl-eeprom.h"
  47 #include "iwl-dev.h"
  48 #include "iwl-core.h"
  49 #include "iwl-io.h"
  50 #include "iwl-helpers.h"
  51 #include "iwl-sta.h"
  52 #include "iwl-agn-calib.h"
  53 #include "iwl-agn.h"
  54 #include "iwl-shared.h"
  55 #include "iwl-bus.h"
  56 #include "iwl-trans.h"
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  */
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #define DRV_VERSION     IWLWIFI_VERSION VD
  76
  77
  78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  79 MODULE_VERSION(DRV_VERSION);
  80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  81 MODULE_LICENSE("GPL");
  82
  83 void iwl_update_chain_flags(struct iwl_priv *priv)
  84 {
  85         struct iwl_rxon_context *ctx;
  86
  87         for_each_context(priv, ctx) {
  88                 iwlagn_set_rxon_chain(priv, ctx);
  89                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  90                         iwlagn_commit_rxon(priv, ctx);
  91         }
  92 }
  93
  94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  96                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  97                                u8 *beacon, u32 frame_size)
  98 {
  99         u16 tim_idx;
 100         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 101
 102         /*
 103          * The index is relative to frame start but we start looking at the
 104          * variable-length part of the beacon.
 105          */
 106         tim_idx = mgmt->u.beacon.variable - beacon;
 107
 108         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 109         while ((tim_idx < (frame_size - 2)) &&
 110                         (beacon[tim_idx] != WLAN_EID_TIM))
 111                 tim_idx += beacon[tim_idx+1] + 2;
 112
 113         /* If TIM field was found, set variables */
 114         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 115                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 116                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 117         } else
 118                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 119 }
 120
 121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 122 {
 123         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 124         struct iwl_host_cmd cmd = {
 125                 .id = REPLY_TX_BEACON,
 126                 .flags = CMD_SYNC,
 127         };
 128         struct ieee80211_tx_info *info;
 129         u32 frame_size;
 130         u32 rate_flags;
 131         u32 rate;
 132
 133         /*
 134          * We have to set up the TX command, the TX Beacon command, and the
 135          * beacon contents.
 136          */
 137
 138         lockdep_assert_held(&priv->shrd->mutex);
 139
 140         if (!priv->beacon_ctx) {
 141                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 142                 return 0;
 143         }
 144
 145         if (WARN_ON(!priv->beacon_skb))
 146                 return -EINVAL;
 147
 148         /* Allocate beacon command */
 149         if (!priv->beacon_cmd)
 150                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 151         tx_beacon_cmd = priv->beacon_cmd;
 152         if (!tx_beacon_cmd)
 153                 return -ENOMEM;
 154
 155         frame_size = priv->beacon_skb->len;
 156
 157         /* Set up TX command fields */
 158         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 159         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 160         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 161         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 162                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 163
 164         /* Set up TX beacon command fields */
 165         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 166                            frame_size);
 167
 168         /* Set up packet rate and flags */
 169         info = IEEE80211_SKB_CB(priv->beacon_skb);
 170
 171         /*
 172          * Let's set up the rate at least somewhat correctly;
 173          * it will currently not actually be used by the uCode,
 174          * it uses the broadcast station's rate instead.
 175          */
 176         if (info->control.rates[0].idx < 0 ||
 177             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 178                 rate = 0;
 179         else
 180                 rate = info->control.rates[0].idx;
 181
 182         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 183                                               hw_params(priv).valid_tx_ant);
 184         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 185
 186         /* In mac80211, rates for 5 GHz start at 0 */
 187         if (info->band == IEEE80211_BAND_5GHZ)
 188                 rate += IWL_FIRST_OFDM_RATE;
 189         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 190                 rate_flags |= RATE_MCS_CCK_MSK;
 191
 192         tx_beacon_cmd->tx.rate_n_flags =
 193                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 194
 195         /* Submit command */
 196         cmd.len[0] = sizeof(*tx_beacon_cmd);
 197         cmd.data[0] = tx_beacon_cmd;
 198         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 199         cmd.len[1] = frame_size;
 200         cmd.data[1] = priv->beacon_skb->data;
 201         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 202
 203         return iwl_trans_send_cmd(trans(priv), &cmd);
 204 }
 205
 206 static void iwl_bg_beacon_update(struct work_struct *work)
 207 {
 208         struct iwl_priv *priv =
 209                 container_of(work, struct iwl_priv, beacon_update);
 210         struct sk_buff *beacon;
 211
 212         mutex_lock(&priv->shrd->mutex);
 213         if (!priv->beacon_ctx) {
 214                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 215                 goto out;
 216         }
 217
 218         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 219                 /*
 220                  * The ucode will send beacon notifications even in
 221                  * IBSS mode, but we don't want to process them. But
 222                  * we need to defer the type check to here due to
 223                  * requiring locking around the beacon_ctx access.
 224                  */
 225                 goto out;
 226         }
 227
 228         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 229         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 230         if (!beacon) {
 231                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 232                 goto out;
 233         }
 234
 235         /* new beacon skb is allocated every time; dispose previous.*/
 236         dev_kfree_skb(priv->beacon_skb);
 237
 238         priv->beacon_skb = beacon;
 239
 240         iwlagn_send_beacon_cmd(priv);
 241  out:
 242         mutex_unlock(&priv->shrd->mutex);
 243 }
 244
 245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 246 {
 247         struct iwl_priv *priv =
 248                 container_of(work, struct iwl_priv, bt_runtime_config);
 249
 250         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 251                 return;
 252
 253         /* dont send host command if rf-kill is on */
 254         if (!iwl_is_ready_rf(priv->shrd))
 255                 return;
 256         iwlagn_send_advance_bt_config(priv);
 257 }
 258
 259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 260 {
 261         struct iwl_priv *priv =
 262                 container_of(work, struct iwl_priv, bt_full_concurrency);
 263         struct iwl_rxon_context *ctx;
 264
 265         mutex_lock(&priv->shrd->mutex);
 266
 267         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 268                 goto out;
 269
 270         /* dont send host command if rf-kill is on */
 271         if (!iwl_is_ready_rf(priv->shrd))
 272                 goto out;
 273
 274         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 275                        priv->bt_full_concurrent ?
 276                        "full concurrency" : "3-wire");
 277
 278         /*
 279          * LQ & RXON updated cmds must be sent before BT Config cmd
 280          * to avoid 3-wire collisions
 281          */
 282         for_each_context(priv, ctx) {
 283                 iwlagn_set_rxon_chain(priv, ctx);
 284                 iwlagn_commit_rxon(priv, ctx);
 285         }
 286
 287         iwlagn_send_advance_bt_config(priv);
 288 out:
 289         mutex_unlock(&priv->shrd->mutex);
 290 }
 291
 292 /**
 293  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 294  *
 295  * This callback is provided in order to send a statistics request.
 296  *
 297  * This timer function is continually reset to execute within
 298  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 299  * was received.  We need to ensure we receive the statistics in order
 300  * to update the temperature used for calibrating the TXPOWER.
 301  */
 302 static void iwl_bg_statistics_periodic(unsigned long data)
 303 {
 304         struct iwl_priv *priv = (struct iwl_priv *)data;
 305
 306         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 307                 return;
 308
 309         /* dont send host command if rf-kill is on */
 310         if (!iwl_is_ready_rf(priv->shrd))
 311                 return;
 312
 313         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 314 }
 315
 316
 317 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 318                                         u32 start_idx, u32 num_events,
 319                                         u32 mode)
 320 {
 321         u32 i;
 322         u32 ptr;        /* SRAM byte address of log data */
 323         u32 ev, time, data; /* event log data */
 324         unsigned long reg_flags;
 325
 326         if (mode == 0)
 327                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 328         else
 329                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 330
 331         /* Make sure device is powered up for SRAM reads */
 332         spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
 333         if (iwl_grab_nic_access(bus(priv))) {
 334                 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 335                 return;
 336         }
 337
 338         /* Set starting address; reads will auto-increment */
 339         iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
 340         rmb();
 341
 342         /*
 343          * "time" is actually "data" for mode 0 (no timestamp).
 344          * place event id # at far right for easier visual parsing.
 345          */
 346         for (i = 0; i < num_events; i++) {
 347                 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 348                 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 349                 if (mode == 0) {
 350                         trace_iwlwifi_dev_ucode_cont_event(priv,
 351                                                         0, time, ev);
 352                 } else {
 353                         data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 354                         trace_iwlwifi_dev_ucode_cont_event(priv,
 355                                                 time, data, ev);
 356                 }
 357         }
 358         /* Allow device to power down */
 359         iwl_release_nic_access(bus(priv));
 360         spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 361 }
 362
 363 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 364 {
 365         u32 capacity;   /* event log capacity in # entries */
 366         u32 base;       /* SRAM byte address of event log header */
 367         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 368         u32 num_wraps;  /* # times uCode wrapped to top of log */
 369         u32 next_entry; /* index of next entry to be written by uCode */
 370
 371         base = priv->device_pointers.error_event_table;
 372         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 373                 capacity = iwl_read_targ_mem(bus(priv), base);
 374                 num_wraps = iwl_read_targ_mem(bus(priv),
 375                                                 base + (2 * sizeof(u32)));
 376                 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
 377                 next_entry = iwl_read_targ_mem(bus(priv),
 378                                                 base + (3 * sizeof(u32)));
 379         } else
 380                 return;
 381
 382         if (num_wraps == priv->event_log.num_wraps) {
 383                 iwl_print_cont_event_trace(priv,
 384                                        base, priv->event_log.next_entry,
 385                                        next_entry - priv->event_log.next_entry,
 386                                        mode);
 387                 priv->event_log.non_wraps_count++;
 388         } else {
 389                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 390                         priv->event_log.wraps_more_count++;
 391                 else
 392                         priv->event_log.wraps_once_count++;
 393                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 394                                 num_wraps - priv->event_log.num_wraps,
 395                                 next_entry, priv->event_log.next_entry);
 396                 if (next_entry < priv->event_log.next_entry) {
 397                         iwl_print_cont_event_trace(priv, base,
 398                                priv->event_log.next_entry,
 399                                capacity - priv->event_log.next_entry,
 400                                mode);
 401
 402                         iwl_print_cont_event_trace(priv, base, 0,
 403                                 next_entry, mode);
 404                 } else {
 405                         iwl_print_cont_event_trace(priv, base,
 406                                next_entry, capacity - next_entry,
 407                                mode);
 408
 409                         iwl_print_cont_event_trace(priv, base, 0,
 410                                 next_entry, mode);
 411                 }
 412         }
 413         priv->event_log.num_wraps = num_wraps;
 414         priv->event_log.next_entry = next_entry;
 415 }
 416
 417 /**
 418  * iwl_bg_ucode_trace - Timer callback to log ucode event
 419  *
 420  * The timer is continually set to execute every
 421  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 422  * this function is to perform continuous uCode event logging operation
 423  * if enabled
 424  */
 425 static void iwl_bg_ucode_trace(unsigned long data)
 426 {
 427         struct iwl_priv *priv = (struct iwl_priv *)data;
 428
 429         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 430                 return;
 431
 432         if (priv->event_log.ucode_trace) {
 433                 iwl_continuous_event_trace(priv);
 434                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 435                 mod_timer(&priv->ucode_trace,
 436                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 437         }
 438 }
 439
 440 static void iwl_bg_tx_flush(struct work_struct *work)
 441 {
 442         struct iwl_priv *priv =
 443                 container_of(work, struct iwl_priv, tx_flush);
 444
 445         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 446                 return;
 447
 448         /* do nothing if rf-kill is on */
 449         if (!iwl_is_ready_rf(priv->shrd))
 450                 return;
 451
 452         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 453         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 454 }
 455
 456 /*****************************************************************************
 457  *
 458  * sysfs attributes
 459  *
 460  *****************************************************************************/
 461
 462 #ifdef CONFIG_IWLWIFI_DEBUG
 463
 464 /*
 465  * The following adds a new attribute to the sysfs representation
 466  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 467  * used for controlling the debug level.
 468  *
 469  * See the level definitions in iwl for details.
 470  *
 471  * The debug_level being managed using sysfs below is a per device debug
 472  * level that is used instead of the global debug level if it (the per
 473  * device debug level) is set.
 474  */
 475 static ssize_t show_debug_level(struct device *d,
 476                                 struct device_attribute *attr, char *buf)
 477 {
 478         struct iwl_shared *shrd = dev_get_drvdata(d);
 479         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd));
 480 }
 481 static ssize_t store_debug_level(struct device *d,
 482                                 struct device_attribute *attr,
 483                                  const char *buf, size_t count)
 484 {
 485         struct iwl_shared *shrd = dev_get_drvdata(d);
 486         struct iwl_priv *priv = shrd->priv;
 487         unsigned long val;
 488         int ret;
 489
 490         ret = strict_strtoul(buf, 0, &val);
 491         if (ret)
 492                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
 493         else {
 494                 shrd->dbg_level_dev = val;
 495                 if (iwl_alloc_traffic_mem(priv))
 496                         IWL_ERR(shrd->priv,
 497                                 "Not enough memory to generate traffic log\n");
 498         }
 499         return strnlen(buf, count);
 500 }
 501
 502 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
 503                         show_debug_level, store_debug_level);
 504
 505
 506 #endif /* CONFIG_IWLWIFI_DEBUG */
 507
 508
 509 static ssize_t show_temperature(struct device *d,
 510                                 struct device_attribute *attr, char *buf)
 511 {
 512         struct iwl_shared *shrd = dev_get_drvdata(d);
 513         struct iwl_priv *priv = shrd->priv;
 514
 515         if (!iwl_is_alive(priv->shrd))
 516                 return -EAGAIN;
 517
 518         return sprintf(buf, "%d\n", priv->temperature);
 519 }
 520
 521 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
 522
 523 static ssize_t show_tx_power(struct device *d,
 524                              struct device_attribute *attr, char *buf)
 525 {
 526         struct iwl_priv *priv = dev_get_drvdata(d);
 527
 528         if (!iwl_is_ready_rf(priv->shrd))
 529                 return sprintf(buf, "off\n");
 530         else
 531                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
 532 }
 533
 534 static ssize_t store_tx_power(struct device *d,
 535                               struct device_attribute *attr,
 536                               const char *buf, size_t count)
 537 {
 538         struct iwl_priv *priv = dev_get_drvdata(d);
 539         unsigned long val;
 540         int ret;
 541
 542         ret = strict_strtoul(buf, 10, &val);
 543         if (ret)
 544                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
 545         else {
 546                 ret = iwl_set_tx_power(priv, val, false);
 547                 if (ret)
 548                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
 549                                 ret);
 550                 else
 551                         ret = count;
 552         }
 553         return ret;
 554 }
 555
 556 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
 557
 558 static struct attribute *iwl_sysfs_entries[] = {
 559         &dev_attr_temperature.attr,
 560         &dev_attr_tx_power.attr,
 561 #ifdef CONFIG_IWLWIFI_DEBUG
 562         &dev_attr_debug_level.attr,
 563 #endif
 564         NULL
 565 };
 566
 567 static struct attribute_group iwl_attribute_group = {
 568         .name = NULL,           /* put in device directory */
 569         .attrs = iwl_sysfs_entries,
 570 };
 571
 572 /******************************************************************************
 573  *
 574  * uCode download functions
 575  *
 576  ******************************************************************************/
 577
 578 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
 579 {
 580         if (desc->v_addr)
 581                 dma_free_coherent(priv->bus->dev, desc->len,
 582                                   desc->v_addr, desc->p_addr);
 583         desc->v_addr = NULL;
 584         desc->len = 0;
 585 }
 586
 587 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
 588 {
 589         iwl_free_fw_desc(priv, &img->code);
 590         iwl_free_fw_desc(priv, &img->data);
 591 }
 592
 593 static void iwl_dealloc_ucode(struct iwl_priv *priv)
 594 {
 595         iwl_free_fw_img(priv, &priv->ucode_rt);
 596         iwl_free_fw_img(priv, &priv->ucode_init);
 597         iwl_free_fw_img(priv, &priv->ucode_wowlan);
 598 }
 599
 600 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
 601                              const void *data, size_t len)
 602 {
 603         if (!len) {
 604                 desc->v_addr = NULL;
 605                 return -EINVAL;
 606         }
 607
 608         desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
 609                                           &desc->p_addr, GFP_KERNEL);
 610         if (!desc->v_addr)
 611                 return -ENOMEM;
 612
 613         desc->len = len;
 614         memcpy(desc->v_addr, data, len);
 615         return 0;
 616 }
 617
 618 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 619 {
 620         int i;
 621
 622         /*
 623          * The default context is always valid,
 624          * the PAN context depends on uCode.
 625          */
 626         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 627         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 628                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 629
 630         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 631                 priv->contexts[i].ctxid = i;
 632
 633         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 634         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 635         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 636         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 637         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 638         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 639         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 640         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 641         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 642                 BIT(NL80211_IFTYPE_ADHOC);
 643         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 644                 BIT(NL80211_IFTYPE_STATION);
 645         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 646         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 647         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 648         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 649
 650         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 651         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 652                 REPLY_WIPAN_RXON_TIMING;
 653         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 654                 REPLY_WIPAN_RXON_ASSOC;
 655         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 656         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 657         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 658         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 659         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 660         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 661                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 662
 663         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 664                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 665                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 666                         BIT(NL80211_IFTYPE_P2P_GO);
 667
 668         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 669         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 670         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 671
 672         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 673 }
 674
 675
 676 struct iwlagn_ucode_capabilities {
 677         u32 max_probe_length;
 678         u32 standard_phy_calibration_size;
 679         u32 flags;
 680 };
 681
 682 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 683 static int iwl_mac_setup_register(struct iwl_priv *priv,
 684                                   struct iwlagn_ucode_capabilities *capa);
 685
 686 #define UCODE_EXPERIMENTAL_INDEX        100
 687 #define UCODE_EXPERIMENTAL_TAG          "exp"
 688
 689 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 690 {
 691         const char *name_pre = priv->cfg->fw_name_pre;
 692         char tag[8];
 693
 694         if (first) {
 695 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 696                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 697                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 698         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 699 #endif
 700                 priv->fw_index = priv->cfg->ucode_api_max;
 701                 sprintf(tag, "%d", priv->fw_index);
 702         } else {
 703                 priv->fw_index--;
 704                 sprintf(tag, "%d", priv->fw_index);
 705         }
 706
 707         if (priv->fw_index < priv->cfg->ucode_api_min) {
 708                 IWL_ERR(priv, "no suitable firmware found!\n");
 709                 return -ENOENT;
 710         }
 711
 712         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 713
 714         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 715                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 716                                 ? "EXPERIMENTAL " : "",
 717                        priv->firmware_name);
 718
 719         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 720                                        priv->bus->dev,
 721                                        GFP_KERNEL, priv, iwl_ucode_callback);
 722 }
 723
 724 struct iwlagn_firmware_pieces {
 725         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 726         size_t inst_size, data_size, init_size, init_data_size,
 727                wowlan_inst_size, wowlan_data_size;
 728
 729         u32 build;
 730
 731         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 732         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 733 };
 734
 735 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 736                                        const struct firmware *ucode_raw,
 737                                        struct iwlagn_firmware_pieces *pieces)
 738 {
 739         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 740         u32 api_ver, hdr_size;
 741         const u8 *src;
 742
 743         priv->ucode_ver = le32_to_cpu(ucode->ver);
 744         api_ver = IWL_UCODE_API(priv->ucode_ver);
 745
 746         switch (api_ver) {
 747         default:
 748                 hdr_size = 28;
 749                 if (ucode_raw->size < hdr_size) {
 750                         IWL_ERR(priv, "File size too small!\n");
 751                         return -EINVAL;
 752                 }
 753                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 754                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 755                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 756                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 757                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 758                 src = ucode->u.v2.data;
 759                 break;
 760         case 0:
 761         case 1:
 762         case 2:
 763                 hdr_size = 24;
 764                 if (ucode_raw->size < hdr_size) {
 765                         IWL_ERR(priv, "File size too small!\n");
 766                         return -EINVAL;
 767                 }
 768                 pieces->build = 0;
 769                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 770                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 771                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 772                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 773                 src = ucode->u.v1.data;
 774                 break;
 775         }
 776
 777         /* Verify size of file vs. image size info in file's header */
 778         if (ucode_raw->size != hdr_size + pieces->inst_size +
 779                                 pieces->data_size + pieces->init_size +
 780                                 pieces->init_data_size) {
 781
 782                 IWL_ERR(priv,
 783                         "uCode file size %d does not match expected size\n",
 784                         (int)ucode_raw->size);
 785                 return -EINVAL;
 786         }
 787
 788         pieces->inst = src;
 789         src += pieces->inst_size;
 790         pieces->data = src;
 791         src += pieces->data_size;
 792         pieces->init = src;
 793         src += pieces->init_size;
 794         pieces->init_data = src;
 795         src += pieces->init_data_size;
 796
 797         return 0;
 798 }
 799
 800 static int iwlagn_load_firmware(struct iwl_priv *priv,
 801                                 const struct firmware *ucode_raw,
 802                                 struct iwlagn_firmware_pieces *pieces,
 803                                 struct iwlagn_ucode_capabilities *capa)
 804 {
 805         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 806         struct iwl_ucode_tlv *tlv;
 807         size_t len = ucode_raw->size;
 808         const u8 *data;
 809         int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
 810         int tmp;
 811         u64 alternatives;
 812         u32 tlv_len;
 813         enum iwl_ucode_tlv_type tlv_type;
 814         const u8 *tlv_data;
 815
 816         if (len < sizeof(*ucode)) {
 817                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 818                 return -EINVAL;
 819         }
 820
 821         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 822                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 823                         le32_to_cpu(ucode->magic));
 824                 return -EINVAL;
 825         }
 826
 827         /*
 828          * Check which alternatives are present, and "downgrade"
 829          * when the chosen alternative is not present, warning
 830          * the user when that happens. Some files may not have
 831          * any alternatives, so don't warn in that case.
 832          */
 833         alternatives = le64_to_cpu(ucode->alternatives);
 834         tmp = wanted_alternative;
 835         if (wanted_alternative > 63)
 836                 wanted_alternative = 63;
 837         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 838                 wanted_alternative--;
 839         if (wanted_alternative && wanted_alternative != tmp)
 840                 IWL_WARN(priv,
 841                          "uCode alternative %d not available, choosing %d\n",
 842                          tmp, wanted_alternative);
 843
 844         priv->ucode_ver = le32_to_cpu(ucode->ver);
 845         pieces->build = le32_to_cpu(ucode->build);
 846         data = ucode->data;
 847
 848         len -= sizeof(*ucode);
 849
 850         while (len >= sizeof(*tlv)) {
 851                 u16 tlv_alt;
 852
 853                 len -= sizeof(*tlv);
 854                 tlv = (void *)data;
 855
 856                 tlv_len = le32_to_cpu(tlv->length);
 857                 tlv_type = le16_to_cpu(tlv->type);
 858                 tlv_alt = le16_to_cpu(tlv->alternative);
 859                 tlv_data = tlv->data;
 860
 861                 if (len < tlv_len) {
 862                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 863                                 len, tlv_len);
 864                         return -EINVAL;
 865                 }
 866                 len -= ALIGN(tlv_len, 4);
 867                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 868
 869                 /*
 870                  * Alternative 0 is always valid.
 871                  *
 872                  * Skip alternative TLVs that are not selected.
 873                  */
 874                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 875                         continue;
 876
 877                 switch (tlv_type) {
 878                 case IWL_UCODE_TLV_INST:
 879                         pieces->inst = tlv_data;
 880                         pieces->inst_size = tlv_len;
 881                         break;
 882                 case IWL_UCODE_TLV_DATA:
 883                         pieces->data = tlv_data;
 884                         pieces->data_size = tlv_len;
 885                         break;
 886                 case IWL_UCODE_TLV_INIT:
 887                         pieces->init = tlv_data;
 888                         pieces->init_size = tlv_len;
 889                         break;
 890                 case IWL_UCODE_TLV_INIT_DATA:
 891                         pieces->init_data = tlv_data;
 892                         pieces->init_data_size = tlv_len;
 893                         break;
 894                 case IWL_UCODE_TLV_BOOT:
 895                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 896                         break;
 897                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 898                         if (tlv_len != sizeof(u32))
 899                                 goto invalid_tlv_len;
 900                         capa->max_probe_length =
 901                                         le32_to_cpup((__le32 *)tlv_data);
 902                         break;
 903                 case IWL_UCODE_TLV_PAN:
 904                         if (tlv_len)
 905                                 goto invalid_tlv_len;
 906                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 907                         break;
 908                 case IWL_UCODE_TLV_FLAGS:
 909                         /* must be at least one u32 */
 910                         if (tlv_len < sizeof(u32))
 911                                 goto invalid_tlv_len;
 912                         /* and a proper number of u32s */
 913                         if (tlv_len % sizeof(u32))
 914                                 goto invalid_tlv_len;
 915                         /*
 916                          * This driver only reads the first u32 as
 917                          * right now no more features are defined,
 918                          * if that changes then either the driver
 919                          * will not work with the new firmware, or
 920                          * it'll not take advantage of new features.
 921                          */
 922                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 923                         break;
 924                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 925                         if (tlv_len != sizeof(u32))
 926                                 goto invalid_tlv_len;
 927                         pieces->init_evtlog_ptr =
 928                                         le32_to_cpup((__le32 *)tlv_data);
 929                         break;
 930                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 931                         if (tlv_len != sizeof(u32))
 932                                 goto invalid_tlv_len;
 933                         pieces->init_evtlog_size =
 934                                         le32_to_cpup((__le32 *)tlv_data);
 935                         break;
 936                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 937                         if (tlv_len != sizeof(u32))
 938                                 goto invalid_tlv_len;
 939                         pieces->init_errlog_ptr =
 940                                         le32_to_cpup((__le32 *)tlv_data);
 941                         break;
 942                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 943                         if (tlv_len != sizeof(u32))
 944                                 goto invalid_tlv_len;
 945                         pieces->inst_evtlog_ptr =
 946                                         le32_to_cpup((__le32 *)tlv_data);
 947                         break;
 948                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 949                         if (tlv_len != sizeof(u32))
 950                                 goto invalid_tlv_len;
 951                         pieces->inst_evtlog_size =
 952                                         le32_to_cpup((__le32 *)tlv_data);
 953                         break;
 954                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 955                         if (tlv_len != sizeof(u32))
 956                                 goto invalid_tlv_len;
 957                         pieces->inst_errlog_ptr =
 958                                         le32_to_cpup((__le32 *)tlv_data);
 959                         break;
 960                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 961                         if (tlv_len)
 962                                 goto invalid_tlv_len;
 963                         priv->enhance_sensitivity_table = true;
 964                         break;
 965                 case IWL_UCODE_TLV_WOWLAN_INST:
 966                         pieces->wowlan_inst = tlv_data;
 967                         pieces->wowlan_inst_size = tlv_len;
 968                         break;
 969                 case IWL_UCODE_TLV_WOWLAN_DATA:
 970                         pieces->wowlan_data = tlv_data;
 971                         pieces->wowlan_data_size = tlv_len;
 972                         break;
 973                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 974                         if (tlv_len != sizeof(u32))
 975                                 goto invalid_tlv_len;
 976                         capa->standard_phy_calibration_size =
 977                                         le32_to_cpup((__le32 *)tlv_data);
 978                         break;
 979                 default:
 980                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
 981                         break;
 982                 }
 983         }
 984
 985         if (len) {
 986                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
 987                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
 988                 return -EINVAL;
 989         }
 990
 991         return 0;
 992
 993  invalid_tlv_len:
 994         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 995         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
 996
 997         return -EINVAL;
 998 }
 999
1000 /**
1001  * iwl_ucode_callback - callback when firmware was loaded
1002  *
1003  * If loaded successfully, copies the firmware into buffers
1004  * for the card to fetch (via DMA).
1005  */
1006 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1007 {
1008         struct iwl_priv *priv = context;
1009         struct iwl_ucode_header *ucode;
1010         int err;
1011         struct iwlagn_firmware_pieces pieces;
1012         const unsigned int api_max = priv->cfg->ucode_api_max;
1013         unsigned int api_ok = priv->cfg->ucode_api_ok;
1014         const unsigned int api_min = priv->cfg->ucode_api_min;
1015         u32 api_ver;
1016         char buildstr[25];
1017         u32 build;
1018         struct iwlagn_ucode_capabilities ucode_capa = {
1019                 .max_probe_length = 200,
1020                 .standard_phy_calibration_size =
1021                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1022         };
1023
1024         if (!api_ok)
1025                 api_ok = api_max;
1026
1027         memset(&pieces, 0, sizeof(pieces));
1028
1029         if (!ucode_raw) {
1030                 if (priv->fw_index <= api_ok)
1031                         IWL_ERR(priv,
1032                                 "request for firmware file '%s' failed.\n",
1033                                 priv->firmware_name);
1034                 goto try_again;
1035         }
1036
1037         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1038                        priv->firmware_name, ucode_raw->size);
1039
1040         /* Make sure that we got at least the API version number */
1041         if (ucode_raw->size < 4) {
1042                 IWL_ERR(priv, "File size way too small!\n");
1043                 goto try_again;
1044         }
1045
1046         /* Data from ucode file:  header followed by uCode images */
1047         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1048
1049         if (ucode->ver)
1050                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1051         else
1052                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1053                                            &ucode_capa);
1054
1055         if (err)
1056                 goto try_again;
1057
1058         api_ver = IWL_UCODE_API(priv->ucode_ver);
1059         build = pieces.build;
1060
1061         /*
1062          * api_ver should match the api version forming part of the
1063          * firmware filename ... but we don't check for that and only rely
1064          * on the API version read from firmware header from here on forward
1065          */
1066         /* no api version check required for experimental uCode */
1067         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1068                 if (api_ver < api_min || api_ver > api_max) {
1069                         IWL_ERR(priv,
1070                                 "Driver unable to support your firmware API. "
1071                                 "Driver supports v%u, firmware is v%u.\n",
1072                                 api_max, api_ver);
1073                         goto try_again;
1074                 }
1075
1076                 if (api_ver < api_ok) {
1077                         if (api_ok != api_max)
1078                                 IWL_ERR(priv, "Firmware has old API version, "
1079                                         "expected v%u through v%u, got v%u.\n",
1080                                         api_ok, api_max, api_ver);
1081                         else
1082                                 IWL_ERR(priv, "Firmware has old API version, "
1083                                         "expected v%u, got v%u.\n",
1084                                         api_max, api_ver);
1085                         IWL_ERR(priv, "New firmware can be obtained from "
1086                                       "http://www.intellinuxwireless.org/.\n");
1087                 }
1088         }
1089
1090         if (build)
1091                 sprintf(buildstr, " build %u%s", build,
1092                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1093                                 ? " (EXP)" : "");
1094         else
1095                 buildstr[0] = '\0';
1096
1097         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1098                  IWL_UCODE_MAJOR(priv->ucode_ver),
1099                  IWL_UCODE_MINOR(priv->ucode_ver),
1100                  IWL_UCODE_API(priv->ucode_ver),
1101                  IWL_UCODE_SERIAL(priv->ucode_ver),
1102                  buildstr);
1103
1104         snprintf(priv->hw->wiphy->fw_version,
1105                  sizeof(priv->hw->wiphy->fw_version),
1106                  "%u.%u.%u.%u%s",
1107                  IWL_UCODE_MAJOR(priv->ucode_ver),
1108                  IWL_UCODE_MINOR(priv->ucode_ver),
1109                  IWL_UCODE_API(priv->ucode_ver),
1110                  IWL_UCODE_SERIAL(priv->ucode_ver),
1111                  buildstr);
1112
1113         /*
1114          * For any of the failures below (before allocating pci memory)
1115          * we will try to load a version with a smaller API -- maybe the
1116          * user just got a corrupted version of the latest API.
1117          */
1118
1119         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1120                        priv->ucode_ver);
1121         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1122                        pieces.inst_size);
1123         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1124                        pieces.data_size);
1125         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1126                        pieces.init_size);
1127         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1128                        pieces.init_data_size);
1129
1130         /* Verify that uCode images will fit in card's SRAM */
1131         if (pieces.inst_size > hw_params(priv).max_inst_size) {
1132                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1133                         pieces.inst_size);
1134                 goto try_again;
1135         }
1136
1137         if (pieces.data_size > hw_params(priv).max_data_size) {
1138                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1139                         pieces.data_size);
1140                 goto try_again;
1141         }
1142
1143         if (pieces.init_size > hw_params(priv).max_inst_size) {
1144                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1145                         pieces.init_size);
1146                 goto try_again;
1147         }
1148
1149         if (pieces.init_data_size > hw_params(priv).max_data_size) {
1150                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1151                         pieces.init_data_size);
1152                 goto try_again;
1153         }
1154
1155         /* Allocate ucode buffers for card's bus-master loading ... */
1156
1157         /* Runtime instructions and 2 copies of data:
1158          * 1) unmodified from disk
1159          * 2) backup cache for save/restore during power-downs */
1160         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1161                               pieces.inst, pieces.inst_size))
1162                 goto err_pci_alloc;
1163         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1164                               pieces.data, pieces.data_size))
1165                 goto err_pci_alloc;
1166
1167         /* Initialization instructions and data */
1168         if (pieces.init_size && pieces.init_data_size) {
1169                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1170                                       pieces.init, pieces.init_size))
1171                         goto err_pci_alloc;
1172                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1173                                       pieces.init_data, pieces.init_data_size))
1174                         goto err_pci_alloc;
1175         }
1176
1177         /* WoWLAN instructions and data */
1178         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1179                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1180                                       pieces.wowlan_inst,
1181                                       pieces.wowlan_inst_size))
1182                         goto err_pci_alloc;
1183                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1184                                       pieces.wowlan_data,
1185                                       pieces.wowlan_data_size))
1186                         goto err_pci_alloc;
1187         }
1188
1189         /* Now that we can no longer fail, copy information */
1190
1191         /*
1192          * The (size - 16) / 12 formula is based on the information recorded
1193          * for each event, which is of mode 1 (including timestamp) for all
1194          * new microcodes that include this information.
1195          */
1196         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1197         if (pieces.init_evtlog_size)
1198                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1199         else
1200                 priv->init_evtlog_size =
1201                         priv->cfg->base_params->max_event_log_size;
1202         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1203         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1204         if (pieces.inst_evtlog_size)
1205                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1206         else
1207                 priv->inst_evtlog_size =
1208                         priv->cfg->base_params->max_event_log_size;
1209         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1210
1211         priv->new_scan_threshold_behaviour =
1212                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1213
1214         if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1215                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1216
1217         /*
1218          * if not PAN, then don't support P2P -- might be a uCode
1219          * packaging bug or due to the eeprom check above
1220          */
1221         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1222                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1223
1224         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1225                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1226                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1227         } else {
1228                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1229                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1230         }
1231
1232         /*
1233          * figure out the offset of chain noise reset and gain commands
1234          * base on the size of standard phy calibration commands table size
1235          */
1236         if (ucode_capa.standard_phy_calibration_size >
1237             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1238                 ucode_capa.standard_phy_calibration_size =
1239                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1240
1241         priv->phy_calib_chain_noise_reset_cmd =
1242                 ucode_capa.standard_phy_calibration_size;
1243         priv->phy_calib_chain_noise_gain_cmd =
1244                 ucode_capa.standard_phy_calibration_size + 1;
1245
1246         /* initialize all valid contexts */
1247         iwl_init_context(priv, ucode_capa.flags);
1248
1249         /**************************************************
1250          * This is still part of probe() in a sense...
1251          *
1252          * 9. Setup and register with mac80211 and debugfs
1253          **************************************************/
1254         err = iwl_mac_setup_register(priv, &ucode_capa);
1255         if (err)
1256                 goto out_unbind;
1257
1258         err = iwl_dbgfs_register(priv, DRV_NAME);
1259         if (err)
1260                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1261
1262         err = sysfs_create_group(&(priv->bus->dev->kobj),
1263                                         &iwl_attribute_group);
1264         if (err) {
1265                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1266                 goto out_unbind;
1267         }
1268
1269         /* We have our copies now, allow OS release its copies */
1270         release_firmware(ucode_raw);
1271         complete(&priv->firmware_loading_complete);
1272         return;
1273
1274  try_again:
1275         /* try next, if any */
1276         if (iwl_request_firmware(priv, false))
1277                 goto out_unbind;
1278         release_firmware(ucode_raw);
1279         return;
1280
1281  err_pci_alloc:
1282         IWL_ERR(priv, "failed to allocate pci memory\n");
1283         iwl_dealloc_ucode(priv);
1284  out_unbind:
1285         complete(&priv->firmware_loading_complete);
1286         device_release_driver(priv->bus->dev);
1287         release_firmware(ucode_raw);
1288 }
1289
1290 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1291 {
1292         struct iwl_ct_kill_config cmd;
1293         struct iwl_ct_kill_throttling_config adv_cmd;
1294         unsigned long flags;
1295         int ret = 0;
1296
1297         spin_lock_irqsave(&priv->shrd->lock, flags);
1298         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1299                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1300         spin_unlock_irqrestore(&priv->shrd->lock, flags);
1301         priv->thermal_throttle.ct_kill_toggle = false;
1302
1303         if (priv->cfg->base_params->support_ct_kill_exit) {
1304                 adv_cmd.critical_temperature_enter =
1305                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1306                 adv_cmd.critical_temperature_exit =
1307                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1308
1309                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1310                                        REPLY_CT_KILL_CONFIG_CMD,
1311                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1312                 if (ret)
1313                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1314                 else
1315                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1316                                 "succeeded, critical temperature enter is %d,"
1317                                 "exit is %d\n",
1318                                 hw_params(priv).ct_kill_threshold,
1319                                 hw_params(priv).ct_kill_exit_threshold);
1320         } else {
1321                 cmd.critical_temperature_R =
1322                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1323
1324                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1325                                        REPLY_CT_KILL_CONFIG_CMD,
1326                                        CMD_SYNC, sizeof(cmd), &cmd);
1327                 if (ret)
1328                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1329                 else
1330                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1331                                 "succeeded, "
1332                                 "critical temperature is %d\n",
1333                                 hw_params(priv).ct_kill_threshold);
1334         }
1335 }
1336
1337 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1338 {
1339         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1340         struct iwl_host_cmd cmd = {
1341                 .id = CALIBRATION_CFG_CMD,
1342                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1343                 .data = { &calib_cfg_cmd, },
1344         };
1345
1346         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1347         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1348         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1349
1350         return iwl_trans_send_cmd(trans(priv), &cmd);
1351 }
1352
1353
1354 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1355 {
1356         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1357           .valid = cpu_to_le32(valid_tx_ant),
1358         };
1359
1360         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1361                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1362                 return iwl_trans_send_cmd_pdu(trans(priv),
1363                                         TX_ANT_CONFIGURATION_CMD,
1364                                         CMD_SYNC,
1365                                         sizeof(struct iwl_tx_ant_config_cmd),
1366                                         &tx_ant_cmd);
1367         } else {
1368                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1369                 return -EOPNOTSUPP;
1370         }
1371 }
1372
1373 /**
1374  * iwl_alive_start - called after REPLY_ALIVE notification received
1375  *                   from protocol/runtime uCode (initialization uCode's
1376  *                   Alive gets handled by iwl_init_alive_start()).
1377  */
1378 int iwl_alive_start(struct iwl_priv *priv)
1379 {
1380         int ret = 0;
1381         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1382
1383         /*TODO: this should go to the transport layer */
1384         iwl_reset_ict(trans(priv));
1385
1386         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1387
1388         /* After the ALIVE response, we can send host commands to the uCode */
1389         set_bit(STATUS_ALIVE, &priv->shrd->status);
1390
1391         /* Enable watchdog to monitor the driver tx queues */
1392         iwl_setup_watchdog(priv);
1393
1394         if (iwl_is_rfkill(priv->shrd))
1395                 return -ERFKILL;
1396
1397         /* download priority table before any calibration request */
1398         if (priv->cfg->bt_params &&
1399             priv->cfg->bt_params->advanced_bt_coexist) {
1400                 /* Configure Bluetooth device coexistence support */
1401                 if (priv->cfg->bt_params->bt_sco_disable)
1402                         priv->bt_enable_pspoll = false;
1403                 else
1404                         priv->bt_enable_pspoll = true;
1405
1406                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1407                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1408                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1409                 iwlagn_send_advance_bt_config(priv);
1410                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1411                 priv->cur_rssi_ctx = NULL;
1412
1413                 iwlagn_send_prio_tbl(priv);
1414
1415                 /* FIXME: w/a to force change uCode BT state machine */
1416                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1417                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1418                 if (ret)
1419                         return ret;
1420                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1421                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1422                 if (ret)
1423                         return ret;
1424         } else {
1425                 /*
1426                  * default is 2-wire BT coexexistence support
1427                  */
1428                 iwl_send_bt_config(priv);
1429         }
1430
1431         if (hw_params(priv).calib_rt_cfg)
1432                 iwlagn_send_calib_cfg_rt(priv,
1433                                          hw_params(priv).calib_rt_cfg);
1434
1435         ieee80211_wake_queues(priv->hw);
1436
1437         priv->active_rate = IWL_RATES_MASK;
1438
1439         /* Configure Tx antenna selection based on H/W config */
1440         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1441
1442         if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1443                 struct iwl_rxon_cmd *active_rxon =
1444                                 (struct iwl_rxon_cmd *)&ctx->active;
1445                 /* apply any changes in staging */
1446                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1447                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1448         } else {
1449                 struct iwl_rxon_context *tmp;
1450                 /* Initialize our rx_config data */
1451                 for_each_context(priv, tmp)
1452                         iwl_connection_init_rx_config(priv, tmp);
1453
1454                 iwlagn_set_rxon_chain(priv, ctx);
1455         }
1456
1457         if (!priv->shrd->wowlan) {
1458                 /* WoWLAN ucode will not reply in the same way, skip it */
1459                 iwl_reset_run_time_calib(priv);
1460         }
1461
1462         set_bit(STATUS_READY, &priv->shrd->status);
1463
1464         /* Configure the adapter for unassociated operation */
1465         ret = iwlagn_commit_rxon(priv, ctx);
1466         if (ret)
1467                 return ret;
1468
1469         /* At this point, the NIC is initialized and operational */
1470         iwl_rf_kill_ct_config(priv);
1471
1472         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1473
1474         return iwl_power_update_mode(priv, true);
1475 }
1476
1477 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1478
1479 static void __iwl_down(struct iwl_priv *priv)
1480 {
1481         int exit_pending;
1482
1483         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1484
1485         iwl_scan_cancel_timeout(priv, 200);
1486
1487         /*
1488          * If active, scanning won't cancel it, so say it expired.
1489          * No race since we hold the mutex here and a new one
1490          * can't come in at this time.
1491          */
1492         ieee80211_remain_on_channel_expired(priv->hw);
1493
1494         exit_pending =
1495                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1496
1497         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1498          * to prevent rearm timer */
1499         del_timer_sync(&priv->watchdog);
1500
1501         iwl_clear_ucode_stations(priv, NULL);
1502         iwl_dealloc_bcast_stations(priv);
1503         iwl_clear_driver_stations(priv);
1504
1505         /* reset BT coex data */
1506         priv->bt_status = 0;
1507         priv->cur_rssi_ctx = NULL;
1508         priv->bt_is_sco = 0;
1509         if (priv->cfg->bt_params)
1510                 priv->bt_traffic_load =
1511                          priv->cfg->bt_params->bt_init_traffic_load;
1512         else
1513                 priv->bt_traffic_load = 0;
1514         priv->bt_full_concurrent = false;
1515         priv->bt_ci_compliance = 0;
1516
1517         /* Wipe out the EXIT_PENDING status bit if we are not actually
1518          * exiting the module */
1519         if (!exit_pending)
1520                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1521
1522         if (priv->mac80211_registered)
1523                 ieee80211_stop_queues(priv->hw);
1524
1525         /* Clear out all status bits but a few that are stable across reset */
1526         priv->shrd->status &=
1527                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1528                                 STATUS_RF_KILL_HW |
1529                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1530                                 STATUS_GEO_CONFIGURED |
1531                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1532                                 STATUS_FW_ERROR |
1533                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1534                                 STATUS_EXIT_PENDING;
1535
1536         iwl_trans_stop_device(trans(priv));
1537
1538         dev_kfree_skb(priv->beacon_skb);
1539         priv->beacon_skb = NULL;
1540 }
1541
1542 static void iwl_down(struct iwl_priv *priv)
1543 {
1544         mutex_lock(&priv->shrd->mutex);
1545         __iwl_down(priv);
1546         mutex_unlock(&priv->shrd->mutex);
1547
1548         iwl_cancel_deferred_work(priv);
1549 }
1550
1551 #define MAX_HW_RESTARTS 5
1552
1553 static int __iwl_up(struct iwl_priv *priv)
1554 {
1555         struct iwl_rxon_context *ctx;
1556         int ret;
1557
1558         lockdep_assert_held(&priv->shrd->mutex);
1559
1560         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1561                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1562                 return -EIO;
1563         }
1564
1565         for_each_context(priv, ctx) {
1566                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1567                 if (ret) {
1568                         iwl_dealloc_bcast_stations(priv);
1569                         return ret;
1570                 }
1571         }
1572
1573         ret = iwlagn_run_init_ucode(priv);
1574         if (ret) {
1575                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1576                 goto error;
1577         }
1578
1579         ret = iwlagn_load_ucode_wait_alive(priv,
1580                                            &priv->ucode_rt,
1581                                            IWL_UCODE_REGULAR);
1582         if (ret) {
1583                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1584                 goto error;
1585         }
1586
1587         ret = iwl_alive_start(priv);
1588         if (ret)
1589                 goto error;
1590         return 0;
1591
1592  error:
1593         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1594         __iwl_down(priv);
1595         clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1596
1597         IWL_ERR(priv, "Unable to initialize device.\n");
1598         return ret;
1599 }
1600
1601
1602 /*****************************************************************************
1603  *
1604  * Workqueue callbacks
1605  *
1606  *****************************************************************************/
1607
1608 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1609 {
1610         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1611                         run_time_calib_work);
1612
1613         mutex_lock(&priv->shrd->mutex);
1614
1615         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1616             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1617                 mutex_unlock(&priv->shrd->mutex);
1618                 return;
1619         }
1620
1621         if (priv->start_calib) {
1622                 iwl_chain_noise_calibration(priv);
1623                 iwl_sensitivity_calibration(priv);
1624         }
1625
1626         mutex_unlock(&priv->shrd->mutex);
1627 }
1628
1629 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1630 {
1631         struct iwl_rxon_context *ctx;
1632         bool bt_full_concurrent;
1633         u8 bt_ci_compliance;
1634         u8 bt_load;
1635         u8 bt_status;
1636         bool bt_is_sco;
1637
1638         lockdep_assert_held(&priv->shrd->mutex);
1639
1640         for_each_context(priv, ctx)
1641                 ctx->vif = NULL;
1642         priv->is_open = 0;
1643
1644         /*
1645          * __iwl_down() will clear the BT status variables,
1646          * which is correct, but when we restart we really
1647          * want to keep them so restore them afterwards.
1648          *
1649          * The restart process will later pick them up and
1650          * re-configure the hw when we reconfigure the BT
1651          * command.
1652          */
1653         bt_full_concurrent = priv->bt_full_concurrent;
1654         bt_ci_compliance = priv->bt_ci_compliance;
1655         bt_load = priv->bt_traffic_load;
1656         bt_status = priv->bt_status;
1657         bt_is_sco = priv->bt_is_sco;
1658
1659         __iwl_down(priv);
1660
1661         priv->bt_full_concurrent = bt_full_concurrent;
1662         priv->bt_ci_compliance = bt_ci_compliance;
1663         priv->bt_traffic_load = bt_load;
1664         priv->bt_status = bt_status;
1665         priv->bt_is_sco = bt_is_sco;
1666 }
1667
1668 static void iwl_bg_restart(struct work_struct *data)
1669 {
1670         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1671
1672         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1673                 return;
1674
1675         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1676                 mutex_lock(&priv->shrd->mutex);
1677                 iwlagn_prepare_restart(priv);
1678                 mutex_unlock(&priv->shrd->mutex);
1679                 iwl_cancel_deferred_work(priv);
1680                 ieee80211_restart_hw(priv->hw);
1681         } else {
1682                 WARN_ON(1);
1683         }
1684 }
1685
1686 /*****************************************************************************
1687  *
1688  * mac80211 entry point functions
1689  *
1690  *****************************************************************************/
1691
1692 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1693         {
1694                 .max = 1,
1695                 .types = BIT(NL80211_IFTYPE_STATION),
1696         },
1697         {
1698                 .max = 1,
1699                 .types = BIT(NL80211_IFTYPE_AP),
1700         },
1701 };
1702
1703 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1704         {
1705                 .max = 2,
1706                 .types = BIT(NL80211_IFTYPE_STATION),
1707         },
1708 };
1709
1710 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1711         {
1712                 .max = 1,
1713                 .types = BIT(NL80211_IFTYPE_STATION),
1714         },
1715         {
1716                 .max = 1,
1717                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1718                          BIT(NL80211_IFTYPE_AP),
1719         },
1720 };
1721
1722 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1723         {
1724                 .max = 2,
1725                 .types = BIT(NL80211_IFTYPE_STATION),
1726         },
1727         {
1728                 .max = 1,
1729                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1730         },
1731 };
1732
1733 static const struct ieee80211_iface_combination
1734 iwlagn_iface_combinations_dualmode[] = {
1735         { .num_different_channels = 1,
1736           .max_interfaces = 2,
1737           .beacon_int_infra_match = true,
1738           .limits = iwlagn_sta_ap_limits,
1739           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1740         },
1741         { .num_different_channels = 1,
1742           .max_interfaces = 2,
1743           .limits = iwlagn_2sta_limits,
1744           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1745         },
1746 };
1747
1748 static const struct ieee80211_iface_combination
1749 iwlagn_iface_combinations_p2p[] = {
1750         { .num_different_channels = 1,
1751           .max_interfaces = 2,
1752           .beacon_int_infra_match = true,
1753           .limits = iwlagn_p2p_sta_go_limits,
1754           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1755         },
1756         { .num_different_channels = 1,
1757           .max_interfaces = 2,
1758           .limits = iwlagn_p2p_2sta_limits,
1759           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1760         },
1761 };
1762
1763 /*
1764  * Not a mac80211 entry point function, but it fits in with all the
1765  * other mac80211 functions grouped here.
1766  */
1767 static int iwl_mac_setup_register(struct iwl_priv *priv,
1768                                   struct iwlagn_ucode_capabilities *capa)
1769 {
1770         int ret;
1771         struct ieee80211_hw *hw = priv->hw;
1772         struct iwl_rxon_context *ctx;
1773
1774         hw->rate_control_algorithm = "iwl-agn-rs";
1775
1776         /* Tell mac80211 our characteristics */
1777         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1778                     IEEE80211_HW_AMPDU_AGGREGATION |
1779                     IEEE80211_HW_NEED_DTIM_PERIOD |
1780                     IEEE80211_HW_SPECTRUM_MGMT |
1781                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1782
1783         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1784
1785         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1786                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1787
1788         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1789                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1790                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1791
1792         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1793                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1794
1795         hw->sta_data_size = sizeof(struct iwl_station_priv);
1796         hw->vif_data_size = sizeof(struct iwl_vif_priv);
1797
1798         for_each_context(priv, ctx) {
1799                 hw->wiphy->interface_modes |= ctx->interface_modes;
1800                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1801         }
1802
1803         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1804
1805         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1806                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1807                 hw->wiphy->n_iface_combinations =
1808                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1809         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1810                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1811                 hw->wiphy->n_iface_combinations =
1812                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1813         }
1814
1815         hw->wiphy->max_remain_on_channel_duration = 1000;
1816
1817         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1818                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
1819                             WIPHY_FLAG_IBSS_RSN;
1820
1821         if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
1822                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1823                                           WIPHY_WOWLAN_DISCONNECT |
1824                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1825                                           WIPHY_WOWLAN_RFKILL_RELEASE;
1826                 if (!iwlagn_mod_params.sw_crypto)
1827                         hw->wiphy->wowlan.flags |=
1828                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1829                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1830
1831                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1832                 hw->wiphy->wowlan.pattern_min_len =
1833                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1834                 hw->wiphy->wowlan.pattern_max_len =
1835                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1836         }
1837
1838         if (iwlagn_mod_params.power_save)
1839                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1840         else
1841                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1842
1843         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1844         /* we create the 802.11 header and a zero-length SSID element */
1845         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1846
1847         /* Default value; 4 EDCA QOS priorities */
1848         hw->queues = 4;
1849
1850         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1851
1852         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1853                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1854                         &priv->bands[IEEE80211_BAND_2GHZ];
1855         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1856                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1857                         &priv->bands[IEEE80211_BAND_5GHZ];
1858
1859         iwl_leds_init(priv);
1860
1861         ret = ieee80211_register_hw(priv->hw);
1862         if (ret) {
1863                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1864                 return ret;
1865         }
1866         priv->mac80211_registered = 1;
1867
1868         return 0;
1869 }
1870
1871
1872 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1873 {
1874         struct iwl_priv *priv = hw->priv;
1875         int ret;
1876
1877         IWL_DEBUG_MAC80211(priv, "enter\n");
1878
1879         /* we should be verifying the device is ready to be opened */
1880         mutex_lock(&priv->shrd->mutex);
1881         ret = __iwl_up(priv);
1882         mutex_unlock(&priv->shrd->mutex);
1883         if (ret)
1884                 return ret;
1885
1886         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1887
1888         /* Now we should be done, and the READY bit should be set. */
1889         if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1890                 ret = -EIO;
1891
1892         iwlagn_led_enable(priv);
1893
1894         priv->is_open = 1;
1895         IWL_DEBUG_MAC80211(priv, "leave\n");
1896         return 0;
1897 }
1898
1899 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1900 {
1901         struct iwl_priv *priv = hw->priv;
1902
1903         IWL_DEBUG_MAC80211(priv, "enter\n");
1904
1905         if (!priv->is_open)
1906                 return;
1907
1908         priv->is_open = 0;
1909
1910         iwl_down(priv);
1911
1912         flush_workqueue(priv->shrd->workqueue);
1913
1914         /* User space software may expect getting rfkill changes
1915          * even if interface is down */
1916         iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1917         iwl_enable_rfkill_int(priv);
1918
1919         IWL_DEBUG_MAC80211(priv, "leave\n");
1920 }
1921
1922 #ifdef CONFIG_PM
1923 static int iwlagn_send_patterns(struct iwl_priv *priv,
1924                                 struct cfg80211_wowlan *wowlan)
1925 {
1926         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1927         struct iwl_host_cmd cmd = {
1928                 .id = REPLY_WOWLAN_PATTERNS,
1929                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1930                 .flags = CMD_SYNC,
1931         };
1932         int i, err;
1933
1934         if (!wowlan->n_patterns)
1935                 return 0;
1936
1937         cmd.len[0] = sizeof(*pattern_cmd) +
1938                         wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1939
1940         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1941         if (!pattern_cmd)
1942                 return -ENOMEM;
1943
1944         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1945
1946         for (i = 0; i < wowlan->n_patterns; i++) {
1947                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1948
1949                 memcpy(&pattern_cmd->patterns[i].mask,
1950                         wowlan->patterns[i].mask, mask_len);
1951                 memcpy(&pattern_cmd->patterns[i].pattern,
1952                         wowlan->patterns[i].pattern,
1953                         wowlan->patterns[i].pattern_len);
1954                 pattern_cmd->patterns[i].mask_size = mask_len;
1955                 pattern_cmd->patterns[i].pattern_size =
1956                         wowlan->patterns[i].pattern_len;
1957         }
1958
1959         cmd.data[0] = pattern_cmd;
1960         err = iwl_trans_send_cmd(trans(priv), &cmd);
1961         kfree(pattern_cmd);
1962         return err;
1963 }
1964 #endif
1965
1966 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1967                                       struct ieee80211_vif *vif,
1968                                       struct cfg80211_gtk_rekey_data *data)
1969 {
1970         struct iwl_priv *priv = hw->priv;
1971
1972         if (iwlagn_mod_params.sw_crypto)
1973                 return;
1974
1975         mutex_lock(&priv->shrd->mutex);
1976
1977         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
1978                 goto out;
1979
1980         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
1981         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
1982         priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
1983         priv->have_rekey_data = true;
1984
1985  out:
1986         mutex_unlock(&priv->shrd->mutex);
1987 }
1988
1989 struct wowlan_key_data {
1990         struct iwl_rxon_context *ctx;
1991         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
1992         struct iwlagn_wowlan_tkip_params_cmd *tkip;
1993         const u8 *bssid;
1994         bool error, use_rsc_tsc, use_tkip;
1995 };
1996
1997 #ifdef CONFIG_PM
1998 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
1999 {
2000         int i;
2001
2002         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2003                 out[i] = cpu_to_le16(p1k[i]);
2004 }
2005
2006 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2007                                        struct ieee80211_vif *vif,
2008                                        struct ieee80211_sta *sta,
2009                                        struct ieee80211_key_conf *key,
2010                                        void *_data)
2011 {
2012         struct iwl_priv *priv = hw->priv;
2013         struct wowlan_key_data *data = _data;
2014         struct iwl_rxon_context *ctx = data->ctx;
2015         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2016         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2017         struct iwlagn_p1k_cache *rx_p1ks;
2018         u8 *rx_mic_key;
2019         struct ieee80211_key_seq seq;
2020         u32 cur_rx_iv32 = 0;
2021         u16 p1k[IWLAGN_P1K_SIZE];
2022         int ret, i;
2023
2024         mutex_lock(&priv->shrd->mutex);
2025
2026         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2027              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2028              !sta && !ctx->key_mapping_keys)
2029                 ret = iwl_set_default_wep_key(priv, ctx, key);
2030         else
2031                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2032
2033         if (ret) {
2034                 IWL_ERR(priv, "Error setting key during suspend!\n");
2035                 data->error = true;
2036         }
2037
2038         switch (key->cipher) {
2039         case WLAN_CIPHER_SUITE_TKIP:
2040                 if (sta) {
2041                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2042                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2043
2044                         rx_p1ks = data->tkip->rx_uni;
2045
2046                         ieee80211_get_key_tx_seq(key, &seq);
2047                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2048                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2049
2050                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2051                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2052
2053                         memcpy(data->tkip->mic_keys.tx,
2054                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2055                                IWLAGN_MIC_KEY_SIZE);
2056
2057                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
2058                 } else {
2059                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2060                         rx_p1ks = data->tkip->rx_multi;
2061                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
2062                 }
2063
2064                 /*
2065                  * For non-QoS this relies on the fact that both the uCode and
2066                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
2067                  * for checking the IV in the frames.
2068                  */
2069                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2070                         ieee80211_get_key_rx_seq(key, i, &seq);
2071                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2072                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2073                         /* wrapping isn't allowed, AP must rekey */
2074                         if (seq.tkip.iv32 > cur_rx_iv32)
2075                                 cur_rx_iv32 = seq.tkip.iv32;
2076                 }
2077
2078                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2079                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2080                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2081                                           cur_rx_iv32 + 1, p1k);
2082                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2083
2084                 memcpy(rx_mic_key,
2085                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2086                        IWLAGN_MIC_KEY_SIZE);
2087
2088                 data->use_tkip = true;
2089                 data->use_rsc_tsc = true;
2090                 break;
2091         case WLAN_CIPHER_SUITE_CCMP:
2092                 if (sta) {
2093                         u8 *pn = seq.ccmp.pn;
2094
2095                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2096                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2097
2098                         ieee80211_get_key_tx_seq(key, &seq);
2099                         aes_tx_sc->pn = cpu_to_le64(
2100                                         (u64)pn[5] |
2101                                         ((u64)pn[4] << 8) |
2102                                         ((u64)pn[3] << 16) |
2103                                         ((u64)pn[2] << 24) |
2104                                         ((u64)pn[1] << 32) |
2105                                         ((u64)pn[0] << 40));
2106                 } else
2107                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2108
2109                 /*
2110                  * For non-QoS this relies on the fact that both the uCode and
2111                  * mac80211 use TID 0 for checking the IV in the frames.
2112                  */
2113                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2114                         u8 *pn = seq.ccmp.pn;
2115
2116                         ieee80211_get_key_rx_seq(key, i, &seq);
2117                         aes_sc->pn = cpu_to_le64(
2118                                         (u64)pn[5] |
2119                                         ((u64)pn[4] << 8) |
2120                                         ((u64)pn[3] << 16) |
2121                                         ((u64)pn[2] << 24) |
2122                                         ((u64)pn[1] << 32) |
2123                                         ((u64)pn[0] << 40));
2124                 }
2125                 data->use_rsc_tsc = true;
2126                 break;
2127         }
2128
2129         mutex_unlock(&priv->shrd->mutex);
2130 }
2131
2132 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2133                               struct cfg80211_wowlan *wowlan)
2134 {
2135         struct iwl_priv *priv = hw->priv;
2136         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2137         struct iwl_rxon_cmd rxon;
2138         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2139         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2140         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2141         struct wowlan_key_data key_data = {
2142                 .ctx = ctx,
2143                 .bssid = ctx->active.bssid_addr,
2144                 .use_rsc_tsc = false,
2145                 .tkip = &tkip_cmd,
2146                 .use_tkip = false,
2147         };
2148         int ret, i;
2149         u16 seq;
2150
2151         if (WARN_ON(!wowlan))
2152                 return -EINVAL;
2153
2154         mutex_lock(&priv->shrd->mutex);
2155
2156         /* Don't attempt WoWLAN when not associated, tear down instead. */
2157         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2158             !iwl_is_associated_ctx(ctx)) {
2159                 ret = 1;
2160                 goto out;
2161         }
2162
2163         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2164         if (!key_data.rsc_tsc) {
2165                 ret = -ENOMEM;
2166                 goto out;
2167         }
2168
2169         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2170
2171         /*
2172          * We know the last used seqno, and the uCode expects to know that
2173          * one, it will increment before TX.
2174          */
2175         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2176         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2177
2178         /*
2179          * For QoS counters, we store the one to use next, so subtract 0x10
2180          * since the uCode will add 0x10 before using the value.
2181          */
2182         for (i = 0; i < 8; i++) {
2183                 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2184                 seq -= 0x10;
2185                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2186         }
2187
2188         if (wowlan->disconnect)
2189                 wakeup_filter_cmd.enabled |=
2190                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2191                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2192         if (wowlan->magic_pkt)
2193                 wakeup_filter_cmd.enabled |=
2194                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2195         if (wowlan->gtk_rekey_failure)
2196                 wakeup_filter_cmd.enabled |=
2197                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2198         if (wowlan->eap_identity_req)
2199                 wakeup_filter_cmd.enabled |=
2200                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2201         if (wowlan->four_way_handshake)
2202                 wakeup_filter_cmd.enabled |=
2203                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2204         if (wowlan->rfkill_release)
2205                 wakeup_filter_cmd.enabled |=
2206                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2207         if (wowlan->n_patterns)
2208                 wakeup_filter_cmd.enabled |=
2209                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2210
2211         iwl_scan_cancel_timeout(priv, 200);
2212
2213         memcpy(&rxon, &ctx->active, sizeof(rxon));
2214
2215         iwl_trans_stop_device(trans(priv));
2216
2217         priv->shrd->wowlan = true;
2218
2219         ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2220                                            IWL_UCODE_WOWLAN);
2221         if (ret)
2222                 goto error;
2223
2224         /* now configure WoWLAN ucode */
2225         ret = iwl_alive_start(priv);
2226         if (ret)
2227                 goto error;
2228
2229         memcpy(&ctx->staging, &rxon, sizeof(rxon));
2230         ret = iwlagn_commit_rxon(priv, ctx);
2231         if (ret)
2232                 goto error;
2233
2234         ret = iwl_power_update_mode(priv, true);
2235         if (ret)
2236                 goto error;
2237
2238         if (!iwlagn_mod_params.sw_crypto) {
2239                 /* mark all keys clear */
2240                 priv->ucode_key_table = 0;
2241                 ctx->key_mapping_keys = 0;
2242
2243                 /*
2244                  * This needs to be unlocked due to lock ordering
2245                  * constraints. Since we're in the suspend path
2246                  * that isn't really a problem though.
2247                  */
2248                 mutex_unlock(&priv->shrd->mutex);
2249                 ieee80211_iter_keys(priv->hw, ctx->vif,
2250                                     iwlagn_wowlan_program_keys,
2251                                     &key_data);
2252                 mutex_lock(&priv->shrd->mutex);
2253                 if (key_data.error) {
2254                         ret = -EIO;
2255                         goto error;
2256                 }
2257
2258                 if (key_data.use_rsc_tsc) {
2259                         struct iwl_host_cmd rsc_tsc_cmd = {
2260                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2261                                 .flags = CMD_SYNC,
2262                                 .data[0] = key_data.rsc_tsc,
2263                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2264                                 .len[0] = sizeof(*key_data.rsc_tsc),
2265                         };
2266
2267                         ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2268                         if (ret)
2269                                 goto error;
2270                 }
2271
2272                 if (key_data.use_tkip) {
2273                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2274                                                  REPLY_WOWLAN_TKIP_PARAMS,
2275                                                  CMD_SYNC, sizeof(tkip_cmd),
2276                                                  &tkip_cmd);
2277                         if (ret)
2278                                 goto error;
2279                 }
2280
2281                 if (priv->have_rekey_data) {
2282                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2283                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2284                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2285                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2286                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2287                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
2288
2289                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2290                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
2291                                                  CMD_SYNC, sizeof(kek_kck_cmd),
2292                                                  &kek_kck_cmd);
2293                         if (ret)
2294                                 goto error;
2295                 }
2296         }
2297
2298         ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2299                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
2300                                  &wakeup_filter_cmd);
2301         if (ret)
2302                 goto error;
2303
2304         ret = iwlagn_send_patterns(priv, wowlan);
2305         if (ret)
2306                 goto error;
2307
2308         device_set_wakeup_enable(priv->bus->dev, true);
2309
2310         /* Now let the ucode operate on its own */
2311         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2312                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2313
2314         goto out;
2315
2316  error:
2317         priv->shrd->wowlan = false;
2318         iwlagn_prepare_restart(priv);
2319         ieee80211_restart_hw(priv->hw);
2320  out:
2321         mutex_unlock(&priv->shrd->mutex);
2322         kfree(key_data.rsc_tsc);
2323         return ret;
2324 }
2325
2326 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2327 {
2328         struct iwl_priv *priv = hw->priv;
2329         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2330         struct ieee80211_vif *vif;
2331         unsigned long flags;
2332         u32 base, status = 0xffffffff;
2333         int ret = -EIO;
2334
2335         mutex_lock(&priv->shrd->mutex);
2336
2337         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2338                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2339
2340         base = priv->device_pointers.error_event_table;
2341         if (iwlagn_hw_valid_rtc_data_addr(base)) {
2342                 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2343                 ret = iwl_grab_nic_access_silent(bus(priv));
2344                 if (ret == 0) {
2345                         iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2346                         status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2347                         iwl_release_nic_access(bus(priv));
2348                 }
2349                 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2350
2351 #ifdef CONFIG_IWLWIFI_DEBUGFS
2352                 if (ret == 0) {
2353                         if (!priv->wowlan_sram)
2354                                 priv->wowlan_sram =
2355                                         kzalloc(priv->ucode_wowlan.data.len,
2356                                                 GFP_KERNEL);
2357
2358                         if (priv->wowlan_sram)
2359                                 _iwl_read_targ_mem_words(
2360                                         bus(priv), 0x800000, priv->wowlan_sram,
2361                                         priv->ucode_wowlan.data.len / 4);
2362                 }
2363 #endif
2364         }
2365
2366         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2367         vif = ctx->vif;
2368
2369         priv->shrd->wowlan = false;
2370
2371         device_set_wakeup_enable(priv->bus->dev, false);
2372
2373         iwlagn_prepare_restart(priv);
2374
2375         memset((void *)&ctx->active, 0, sizeof(ctx->active));
2376         iwl_connection_init_rx_config(priv, ctx);
2377         iwlagn_set_rxon_chain(priv, ctx);
2378
2379         mutex_unlock(&priv->shrd->mutex);
2380
2381         ieee80211_resume_disconnect(vif);
2382
2383         return 1;
2384 }
2385 #endif
2386
2387 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2388 {
2389         struct iwl_priv *priv = hw->priv;
2390
2391         IWL_DEBUG_MACDUMP(priv, "enter\n");
2392
2393         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2394                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2395
2396         if (iwlagn_tx_skb(priv, skb))
2397                 dev_kfree_skb_any(skb);
2398
2399         IWL_DEBUG_MACDUMP(priv, "leave\n");
2400 }
2401
2402 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2403                                        struct ieee80211_vif *vif,
2404                                        struct ieee80211_key_conf *keyconf,
2405                                        struct ieee80211_sta *sta,
2406                                        u32 iv32, u16 *phase1key)
2407 {
2408         struct iwl_priv *priv = hw->priv;
2409
2410         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2411 }
2412
2413 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2414                               struct ieee80211_vif *vif,
2415                               struct ieee80211_sta *sta,
2416                               struct ieee80211_key_conf *key)
2417 {
2418         struct iwl_priv *priv = hw->priv;
2419         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2420         struct iwl_rxon_context *ctx = vif_priv->ctx;
2421         int ret;
2422         bool is_default_wep_key = false;
2423
2424         IWL_DEBUG_MAC80211(priv, "enter\n");
2425
2426         if (iwlagn_mod_params.sw_crypto) {
2427                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2428                 return -EOPNOTSUPP;
2429         }
2430
2431         /*
2432          * We could program these keys into the hardware as well, but we
2433          * don't expect much multicast traffic in IBSS and having keys
2434          * for more stations is probably more useful.
2435          *
2436          * Mark key TX-only and return 0.
2437          */
2438         if (vif->type == NL80211_IFTYPE_ADHOC &&
2439             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2440                 key->hw_key_idx = WEP_INVALID_OFFSET;
2441                 return 0;
2442         }
2443
2444         /* If they key was TX-only, accept deletion */
2445         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2446                 return 0;
2447
2448         mutex_lock(&priv->shrd->mutex);
2449         iwl_scan_cancel_timeout(priv, 100);
2450
2451         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2452
2453         /*
2454          * If we are getting WEP group key and we didn't receive any key mapping
2455          * so far, we are in legacy wep mode (group key only), otherwise we are
2456          * in 1X mode.
2457          * In legacy wep mode, we use another host command to the uCode.
2458          */
2459         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2460              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2461                 if (cmd == SET_KEY)
2462                         is_default_wep_key = !ctx->key_mapping_keys;
2463                 else
2464                         is_default_wep_key =
2465                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2466         }
2467
2468
2469         switch (cmd) {
2470         case SET_KEY:
2471                 if (is_default_wep_key) {
2472                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2473                         break;
2474                 }
2475                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2476                 if (ret) {
2477                         /*
2478                          * can't add key for RX, but we don't need it
2479                          * in the device for TX so still return 0
2480                          */
2481                         ret = 0;
2482                         key->hw_key_idx = WEP_INVALID_OFFSET;
2483                 }
2484
2485                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2486                 break;
2487         case DISABLE_KEY:
2488                 if (is_default_wep_key)
2489                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2490                 else
2491                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2492
2493                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2494                 break;
2495         default:
2496                 ret = -EINVAL;
2497         }
2498
2499         mutex_unlock(&priv->shrd->mutex);
2500         IWL_DEBUG_MAC80211(priv, "leave\n");
2501
2502         return ret;
2503 }
2504
2505 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2506                                    struct ieee80211_vif *vif,
2507                                    enum ieee80211_ampdu_mlme_action action,
2508                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2509                                    u8 buf_size)
2510 {
2511         struct iwl_priv *priv = hw->priv;
2512         int ret = -EINVAL;
2513         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2514         struct iwl_rxon_context *ctx =  iwl_rxon_ctx_from_vif(vif);
2515
2516         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2517                      sta->addr, tid);
2518
2519         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2520                 return -EACCES;
2521
2522         mutex_lock(&priv->shrd->mutex);
2523
2524         switch (action) {
2525         case IEEE80211_AMPDU_RX_START:
2526                 IWL_DEBUG_HT(priv, "start Rx\n");
2527                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2528                 break;
2529         case IEEE80211_AMPDU_RX_STOP:
2530                 IWL_DEBUG_HT(priv, "stop Rx\n");
2531                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2532                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2533                         ret = 0;
2534                 break;
2535         case IEEE80211_AMPDU_TX_START:
2536                 IWL_DEBUG_HT(priv, "start Tx\n");
2537                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2538                 if (ret == 0) {
2539                         priv->agg_tids_count++;
2540                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2541                                      priv->agg_tids_count);
2542                 }
2543                 break;
2544         case IEEE80211_AMPDU_TX_STOP:
2545                 IWL_DEBUG_HT(priv, "stop Tx\n");
2546                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2547                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2548                         priv->agg_tids_count--;
2549                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2550                                      priv->agg_tids_count);
2551                 }
2552                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2553                         ret = 0;
2554                 if (priv->cfg->ht_params &&
2555                     priv->cfg->ht_params->use_rts_for_aggregation) {
2556                         /*
2557                          * switch off RTS/CTS if it was previously enabled
2558                          */
2559                         sta_priv->lq_sta.lq.general_params.flags &=
2560                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2561                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2562                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2563                 }
2564                 break;
2565         case IEEE80211_AMPDU_TX_OPERATIONAL:
2566                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2567
2568                 iwl_trans_tx_agg_setup(trans(priv), ctx->ctxid, iwl_sta_id(sta),
2569                                 tid, buf_size);
2570
2571                 /*
2572                  * If the limit is 0, then it wasn't initialised yet,
2573                  * use the default. We can do that since we take the
2574                  * minimum below, and we don't want to go above our
2575                  * default due to hardware restrictions.
2576                  */
2577                 if (sta_priv->max_agg_bufsize == 0)
2578                         sta_priv->max_agg_bufsize =
2579                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2580
2581                 /*
2582                  * Even though in theory the peer could have different
2583                  * aggregation reorder buffer sizes for different sessions,
2584                  * our ucode doesn't allow for that and has a global limit
2585                  * for each station. Therefore, use the minimum of all the
2586                  * aggregation sessions and our default value.
2587                  */
2588                 sta_priv->max_agg_bufsize =
2589                         min(sta_priv->max_agg_bufsize, buf_size);
2590
2591                 if (priv->cfg->ht_params &&
2592                     priv->cfg->ht_params->use_rts_for_aggregation) {
2593                         /*
2594                          * switch to RTS/CTS if it is the prefer protection
2595                          * method for HT traffic
2596                          */
2597
2598                         sta_priv->lq_sta.lq.general_params.flags |=
2599                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2600                 }
2601
2602                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2603                         sta_priv->max_agg_bufsize;
2604
2605                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2606                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2607
2608                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2609                          sta->addr, tid);
2610                 ret = 0;
2611                 break;
2612         }
2613         mutex_unlock(&priv->shrd->mutex);
2614
2615         return ret;
2616 }
2617
2618 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2619                               struct ieee80211_vif *vif,
2620                               struct ieee80211_sta *sta)
2621 {
2622         struct iwl_priv *priv = hw->priv;
2623         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2624         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2625         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2626         int ret;
2627         u8 sta_id;
2628
2629         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2630                         sta->addr);
2631         mutex_lock(&priv->shrd->mutex);
2632         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2633                         sta->addr);
2634         sta_priv->common.sta_id = IWL_INVALID_STATION;
2635
2636         atomic_set(&sta_priv->pending_frames, 0);
2637         if (vif->type == NL80211_IFTYPE_AP)
2638                 sta_priv->client = true;
2639
2640         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2641                                      is_ap, sta, &sta_id);
2642         if (ret) {
2643                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2644                         sta->addr, ret);
2645                 /* Should we return success if return code is EEXIST ? */
2646                 mutex_unlock(&priv->shrd->mutex);
2647                 return ret;
2648         }
2649
2650         sta_priv->common.sta_id = sta_id;
2651
2652         /* Initialize rate scaling */
2653         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2654                        sta->addr);
2655         iwl_rs_rate_init(priv, sta, sta_id);
2656         mutex_unlock(&priv->shrd->mutex);
2657
2658         return 0;
2659 }
2660
2661 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2662                                 struct ieee80211_channel_switch *ch_switch)
2663 {
2664         struct iwl_priv *priv = hw->priv;
2665         const struct iwl_channel_info *ch_info;
2666         struct ieee80211_conf *conf = &hw->conf;
2667         struct ieee80211_channel *channel = ch_switch->channel;
2668         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2669         /*
2670          * MULTI-FIXME
2671          * When we add support for multiple interfaces, we need to
2672          * revisit this. The channel switch command in the device
2673          * only affects the BSS context, but what does that really
2674          * mean? And what if we get a CSA on the second interface?
2675          * This needs a lot of work.
2676          */
2677         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2678         u16 ch;
2679
2680         IWL_DEBUG_MAC80211(priv, "enter\n");
2681
2682         mutex_lock(&priv->shrd->mutex);
2683
2684         if (iwl_is_rfkill(priv->shrd))
2685                 goto out;
2686
2687         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2688             test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2689             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2690                 goto out;
2691
2692         if (!iwl_is_associated_ctx(ctx))
2693                 goto out;
2694
2695         if (!priv->cfg->lib->set_channel_switch)
2696                 goto out;
2697
2698         ch = channel->hw_value;
2699         if (le16_to_cpu(ctx->active.channel) == ch)
2700                 goto out;
2701
2702         ch_info = iwl_get_channel_info(priv, channel->band, ch);
2703         if (!is_channel_valid(ch_info)) {
2704                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2705                 goto out;
2706         }
2707
2708         spin_lock_irq(&priv->shrd->lock);
2709
2710         priv->current_ht_config.smps = conf->smps_mode;
2711
2712         /* Configure HT40 channels */
2713         ctx->ht.enabled = conf_is_ht(conf);
2714         if (ctx->ht.enabled) {
2715                 if (conf_is_ht40_minus(conf)) {
2716                         ctx->ht.extension_chan_offset =
2717                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2718                         ctx->ht.is_40mhz = true;
2719                 } else if (conf_is_ht40_plus(conf)) {
2720                         ctx->ht.extension_chan_offset =
2721                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2722                         ctx->ht.is_40mhz = true;
2723                 } else {
2724                         ctx->ht.extension_chan_offset =
2725                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2726                         ctx->ht.is_40mhz = false;
2727                 }
2728         } else
2729                 ctx->ht.is_40mhz = false;
2730
2731         if ((le16_to_cpu(ctx->staging.channel) != ch))
2732                 ctx->staging.flags = 0;
2733
2734         iwl_set_rxon_channel(priv, channel, ctx);
2735         iwl_set_rxon_ht(priv, ht_conf);
2736         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2737
2738         spin_unlock_irq(&priv->shrd->lock);
2739
2740         iwl_set_rate(priv);
2741         /*
2742          * at this point, staging_rxon has the
2743          * configuration for channel switch
2744          */
2745         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2746         priv->switch_channel = cpu_to_le16(ch);
2747         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2748                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2749                 priv->switch_channel = 0;
2750                 ieee80211_chswitch_done(ctx->vif, false);
2751         }
2752
2753 out:
2754         mutex_unlock(&priv->shrd->mutex);
2755         IWL_DEBUG_MAC80211(priv, "leave\n");
2756 }
2757
2758 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2759                                     unsigned int changed_flags,
2760                                     unsigned int *total_flags,
2761                                     u64 multicast)
2762 {
2763         struct iwl_priv *priv = hw->priv;
2764         __le32 filter_or = 0, filter_nand = 0;
2765         struct iwl_rxon_context *ctx;
2766
2767 #define CHK(test, flag) do { \
2768         if (*total_flags & (test))              \
2769                 filter_or |= (flag);            \
2770         else                                    \
2771                 filter_nand |= (flag);          \
2772         } while (0)
2773
2774         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2775                         changed_flags, *total_flags);
2776
2777         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2778         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2779         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2780         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2781
2782 #undef CHK
2783
2784         mutex_lock(&priv->shrd->mutex);
2785
2786         for_each_context(priv, ctx) {
2787                 ctx->staging.filter_flags &= ~filter_nand;
2788                 ctx->staging.filter_flags |= filter_or;
2789
2790                 /*
2791                  * Not committing directly because hardware can perform a scan,
2792                  * but we'll eventually commit the filter flags change anyway.
2793                  */
2794         }
2795
2796         mutex_unlock(&priv->shrd->mutex);
2797
2798         /*
2799          * Receiving all multicast frames is always enabled by the
2800          * default flags setup in iwl_connection_init_rx_config()
2801          * since we currently do not support programming multicast
2802          * filters into the device.
2803          */
2804         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2805                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2806 }
2807
2808 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2809 {
2810         struct iwl_priv *priv = hw->priv;
2811
2812         mutex_lock(&priv->shrd->mutex);
2813         IWL_DEBUG_MAC80211(priv, "enter\n");
2814
2815         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2816                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2817                 goto done;
2818         }
2819         if (iwl_is_rfkill(priv->shrd)) {
2820                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2821                 goto done;
2822         }
2823
2824         /*
2825          * mac80211 will not push any more frames for transmit
2826          * until the flush is completed
2827          */
2828         if (drop) {
2829                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2830                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2831                         IWL_ERR(priv, "flush request fail\n");
2832                         goto done;
2833                 }
2834         }
2835         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2836         iwlagn_wait_tx_queue_empty(priv);
2837 done:
2838         mutex_unlock(&priv->shrd->mutex);
2839         IWL_DEBUG_MAC80211(priv, "leave\n");
2840 }
2841
2842 void iwlagn_disable_roc(struct iwl_priv *priv)
2843 {
2844         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2845
2846         lockdep_assert_held(&priv->shrd->mutex);
2847
2848         if (!priv->hw_roc_setup)
2849                 return;
2850
2851         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2852         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2853
2854         priv->hw_roc_channel = NULL;
2855
2856         memset(ctx->staging.node_addr, 0, ETH_ALEN);
2857
2858         iwlagn_commit_rxon(priv, ctx);
2859
2860         ctx->is_active = false;
2861         priv->hw_roc_setup = false;
2862 }
2863
2864 static void iwlagn_disable_roc_work(struct work_struct *work)
2865 {
2866         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2867                                              hw_roc_disable_work.work);
2868
2869         mutex_lock(&priv->shrd->mutex);
2870         iwlagn_disable_roc(priv);
2871         mutex_unlock(&priv->shrd->mutex);
2872 }
2873
2874 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2875                                      struct ieee80211_channel *channel,
2876                                      enum nl80211_channel_type channel_type,
2877                                      int duration)
2878 {
2879         struct iwl_priv *priv = hw->priv;
2880         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2881         int err = 0;
2882
2883         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2884                 return -EOPNOTSUPP;
2885
2886         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2887                 return -EOPNOTSUPP;
2888
2889         mutex_lock(&priv->shrd->mutex);
2890
2891         /*
2892          * TODO: Remove this hack! Firmware needs to be updated
2893          * to allow longer off-channel periods in scanning for
2894          * this use case, based on a flag (and we'll need an API
2895          * flag in the firmware when it has that).
2896          */
2897         if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
2898                 duration = 80;
2899
2900         if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2901                 err = -EBUSY;
2902                 goto out;
2903         }
2904
2905         priv->hw_roc_channel = channel;
2906         priv->hw_roc_chantype = channel_type;
2907         priv->hw_roc_duration = duration;
2908         cancel_delayed_work(&priv->hw_roc_disable_work);
2909
2910         if (!ctx->is_active) {
2911                 ctx->is_active = true;
2912                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2913                 memcpy(ctx->staging.node_addr,
2914                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2915                        ETH_ALEN);
2916                 memcpy(ctx->staging.bssid_addr,
2917                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2918                        ETH_ALEN);
2919                 err = iwlagn_commit_rxon(priv, ctx);
2920                 if (err)
2921                         goto out;
2922                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2923                                              RXON_FILTER_PROMISC_MSK |
2924                                              RXON_FILTER_CTL2HOST_MSK;
2925
2926                 err = iwlagn_commit_rxon(priv, ctx);
2927                 if (err) {
2928                         iwlagn_disable_roc(priv);
2929                         goto out;
2930                 }
2931                 priv->hw_roc_setup = true;
2932         }
2933
2934         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2935         if (err)
2936                 iwlagn_disable_roc(priv);
2937
2938  out:
2939         mutex_unlock(&priv->shrd->mutex);
2940
2941         return err;
2942 }
2943
2944 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2945 {
2946         struct iwl_priv *priv = hw->priv;
2947
2948         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2949                 return -EOPNOTSUPP;
2950
2951         mutex_lock(&priv->shrd->mutex);
2952         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2953         iwlagn_disable_roc(priv);
2954         mutex_unlock(&priv->shrd->mutex);
2955
2956         return 0;
2957 }
2958
2959 /*****************************************************************************
2960  *
2961  * driver setup and teardown
2962  *
2963  *****************************************************************************/
2964
2965 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2966 {
2967         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2968
2969         init_waitqueue_head(&priv->wait_command_queue);
2970
2971         INIT_WORK(&priv->restart, iwl_bg_restart);
2972         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2973         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2974         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2975         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2976         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2977         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
2978                           iwlagn_disable_roc_work);
2979
2980         iwl_setup_scan_deferred_work(priv);
2981
2982         if (priv->cfg->lib->bt_setup_deferred_work)
2983                 priv->cfg->lib->bt_setup_deferred_work(priv);
2984
2985         init_timer(&priv->statistics_periodic);
2986         priv->statistics_periodic.data = (unsigned long)priv;
2987         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2988
2989         init_timer(&priv->ucode_trace);
2990         priv->ucode_trace.data = (unsigned long)priv;
2991         priv->ucode_trace.function = iwl_bg_ucode_trace;
2992
2993         init_timer(&priv->watchdog);
2994         priv->watchdog.data = (unsigned long)priv;
2995         priv->watchdog.function = iwl_bg_watchdog;
2996 }
2997
2998 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2999 {
3000         if (priv->cfg->lib->cancel_deferred_work)
3001                 priv->cfg->lib->cancel_deferred_work(priv);
3002
3003         cancel_work_sync(&priv->run_time_calib_work);
3004         cancel_work_sync(&priv->beacon_update);
3005
3006         iwl_cancel_scan_deferred_work(priv);
3007
3008         cancel_work_sync(&priv->bt_full_concurrency);
3009         cancel_work_sync(&priv->bt_runtime_config);
3010         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3011
3012         del_timer_sync(&priv->statistics_periodic);
3013         del_timer_sync(&priv->ucode_trace);
3014 }
3015
3016 static void iwl_init_hw_rates(struct iwl_priv *priv,
3017                               struct ieee80211_rate *rates)
3018 {
3019         int i;
3020
3021         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3022                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3023                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3024                 rates[i].hw_value_short = i;
3025                 rates[i].flags = 0;
3026                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3027                         /*
3028                          * If CCK != 1M then set short preamble rate flag.
3029                          */
3030                         rates[i].flags |=
3031                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3032                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3033                 }
3034         }
3035 }
3036
3037 static int iwl_init_drv(struct iwl_priv *priv)
3038 {
3039         int ret;
3040
3041         spin_lock_init(&priv->shrd->sta_lock);
3042
3043         mutex_init(&priv->shrd->mutex);
3044
3045         priv->ieee_channels = NULL;
3046         priv->ieee_rates = NULL;
3047         priv->band = IEEE80211_BAND_2GHZ;
3048
3049         priv->iw_mode = NL80211_IFTYPE_STATION;
3050         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3051         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3052         priv->agg_tids_count = 0;
3053
3054         /* initialize force reset */
3055         priv->force_reset[IWL_RF_RESET].reset_duration =
3056                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3057         priv->force_reset[IWL_FW_RESET].reset_duration =
3058                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3059
3060         priv->rx_statistics_jiffies = jiffies;
3061
3062         /* Choose which receivers/antennas to use */
3063         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3064
3065         iwl_init_scan_params(priv);
3066
3067         /* init bt coex */
3068         if (priv->cfg->bt_params &&
3069             priv->cfg->bt_params->advanced_bt_coexist) {
3070                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3071                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3072                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3073                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3074                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3075                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3076         }
3077
3078         ret = iwl_init_channel_map(priv);
3079         if (ret) {
3080                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3081                 goto err;
3082         }
3083
3084         ret = iwl_init_geos(priv);
3085         if (ret) {
3086                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3087                 goto err_free_channel_map;
3088         }
3089         iwl_init_hw_rates(priv, priv->ieee_rates);
3090
3091         return 0;
3092
3093 err_free_channel_map:
3094         iwl_free_channel_map(priv);
3095 err:
3096         return ret;
3097 }
3098
3099 static void iwl_uninit_drv(struct iwl_priv *priv)
3100 {
3101         iwl_calib_free_results(priv);
3102         iwl_free_geos(priv);
3103         iwl_free_channel_map(priv);
3104         if (priv->tx_cmd_pool)
3105                 kmem_cache_destroy(priv->tx_cmd_pool);
3106         kfree(priv->scan_cmd);
3107         kfree(priv->beacon_cmd);
3108 #ifdef CONFIG_IWLWIFI_DEBUGFS
3109         kfree(priv->wowlan_sram);
3110 #endif
3111 }
3112
3113 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3114                            enum ieee80211_rssi_event rssi_event)
3115 {
3116         struct iwl_priv *priv = hw->priv;
3117
3118         mutex_lock(&priv->shrd->mutex);
3119
3120         if (priv->cfg->bt_params &&
3121                         priv->cfg->bt_params->advanced_bt_coexist) {
3122                 if (rssi_event == RSSI_EVENT_LOW)
3123                         priv->bt_enable_pspoll = true;
3124                 else if (rssi_event == RSSI_EVENT_HIGH)
3125                         priv->bt_enable_pspoll = false;
3126
3127                 iwlagn_send_advance_bt_config(priv);
3128         } else {
3129                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3130                                 "ignoring RSSI callback\n");
3131         }
3132
3133         mutex_unlock(&priv->shrd->mutex);
3134 }
3135
3136 struct ieee80211_ops iwlagn_hw_ops = {
3137         .tx = iwlagn_mac_tx,
3138         .start = iwlagn_mac_start,
3139         .stop = iwlagn_mac_stop,
3140 #ifdef CONFIG_PM
3141         .suspend = iwlagn_mac_suspend,
3142         .resume = iwlagn_mac_resume,
3143 #endif
3144         .add_interface = iwl_mac_add_interface,
3145         .remove_interface = iwl_mac_remove_interface,
3146         .change_interface = iwl_mac_change_interface,
3147         .config = iwlagn_mac_config,
3148         .configure_filter = iwlagn_configure_filter,
3149         .set_key = iwlagn_mac_set_key,
3150         .update_tkip_key = iwlagn_mac_update_tkip_key,
3151         .set_rekey_data = iwlagn_mac_set_rekey_data,
3152         .conf_tx = iwl_mac_conf_tx,
3153         .bss_info_changed = iwlagn_bss_info_changed,
3154         .ampdu_action = iwlagn_mac_ampdu_action,
3155         .hw_scan = iwl_mac_hw_scan,
3156         .sta_notify = iwlagn_mac_sta_notify,
3157         .sta_add = iwlagn_mac_sta_add,
3158         .sta_remove = iwl_mac_sta_remove,
3159         .channel_switch = iwlagn_mac_channel_switch,
3160         .flush = iwlagn_mac_flush,
3161         .tx_last_beacon = iwl_mac_tx_last_beacon,
3162         .remain_on_channel = iwl_mac_remain_on_channel,
3163         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3164         .rssi_callback = iwl_mac_rssi_callback,
3165         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3166         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3167 };
3168
3169 static u32 iwl_hw_detect(struct iwl_priv *priv)
3170 {
3171         return iwl_read32(bus(priv), CSR_HW_REV);
3172 }
3173
3174 /* Size of one Rx buffer in host DRAM */
3175 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3176 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3177
3178 static int iwl_set_hw_params(struct iwl_priv *priv)
3179 {
3180         if (iwlagn_mod_params.amsdu_size_8K)
3181                 hw_params(priv).rx_page_order =
3182                         get_order(IWL_RX_BUF_SIZE_8K);
3183         else
3184                 hw_params(priv).rx_page_order =
3185                         get_order(IWL_RX_BUF_SIZE_4K);
3186
3187         if (iwlagn_mod_params.disable_11n)
3188                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3189
3190         hw_params(priv).num_ampdu_queues =
3191                 priv->cfg->base_params->num_of_ampdu_queues;
3192         hw_params(priv).shadow_reg_enable =
3193                 priv->cfg->base_params->shadow_reg_enable;
3194         hw_params(priv).sku =
3195                 priv->cfg->sku;
3196
3197         /* Device-specific setup */
3198         return priv->cfg->lib->set_hw_params(priv);
3199 }
3200
3201 /* This function both allocates and initializes hw and priv. */
3202 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3203 {
3204         struct iwl_priv *priv;
3205         /* mac80211 allocates memory for this device instance, including
3206          *   space for this driver's private structure */
3207         struct ieee80211_hw *hw;
3208
3209         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3210         if (hw == NULL) {
3211                 pr_err("%s: Can not allocate network device\n",
3212                        cfg->name);
3213                 goto out;
3214         }
3215
3216         priv = hw->priv;
3217         priv->hw = hw;
3218
3219 out:
3220         return hw;
3221 }
3222
3223 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3224                 struct iwl_cfg *cfg)
3225 {
3226         int err = 0;
3227         struct iwl_priv *priv;
3228         struct ieee80211_hw *hw;
3229         u16 num_mac;
3230         u32 hw_rev;
3231
3232         /************************
3233          * 1. Allocating HW data
3234          ************************/
3235         hw = iwl_alloc_all(cfg);
3236         if (!hw) {
3237                 err = -ENOMEM;
3238                 goto out;
3239         }
3240
3241         priv = hw->priv;
3242         priv->bus = bus;
3243         priv->shrd = &priv->_shrd;
3244         priv->shrd->bus = bus;
3245         priv->shrd->priv = priv;
3246         bus_set_drv_data(priv->bus, priv->shrd);
3247
3248         priv->shrd->trans = trans_ops->alloc(priv->shrd);
3249         if (priv->shrd->trans == NULL) {
3250                 err = -ENOMEM;
3251                 goto out_free_traffic_mem;
3252         }
3253
3254         /* At this point both hw and priv are allocated. */
3255
3256         SET_IEEE80211_DEV(hw, priv->bus->dev);
3257
3258         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3259         priv->cfg = cfg;
3260
3261         /* is antenna coupling more than 35dB ? */
3262         priv->bt_ant_couple_ok =
3263                 (iwlagn_mod_params.ant_coupling >
3264                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3265                         true : false;
3266
3267         /* enable/disable bt channel inhibition */
3268         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3269         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3270                        (priv->bt_ch_announce) ? "On" : "Off");
3271
3272         if (iwl_alloc_traffic_mem(priv))
3273                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3274
3275         /* these spin locks will be used in apm_ops.init and EEPROM access
3276          * we should init now
3277          */
3278         spin_lock_init(&bus(priv)->reg_lock);
3279         spin_lock_init(&priv->shrd->lock);
3280
3281         /*
3282          * stop and reset the on-board processor just in case it is in a
3283          * strange state ... like being left stranded by a primary kernel
3284          * and this is now the kdump kernel trying to start up
3285          */
3286         iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3287
3288         /***********************
3289          * 3. Read REV register
3290          ***********************/
3291         hw_rev = iwl_hw_detect(priv);
3292         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3293                 priv->cfg->name, hw_rev);
3294
3295         err = iwl_trans_request_irq(trans(priv));
3296         if (err)
3297                 goto out_free_trans;
3298
3299         if (iwl_trans_prepare_card_hw(trans(priv))) {
3300                 err = -EIO;
3301                 IWL_WARN(priv, "Failed, HW not ready\n");
3302                 goto out_free_trans;
3303         }
3304
3305         /*****************
3306          * 4. Read EEPROM
3307          *****************/
3308         /* Read the EEPROM */
3309         err = iwl_eeprom_init(priv, hw_rev);
3310         if (err) {
3311                 IWL_ERR(priv, "Unable to init EEPROM\n");
3312                 goto out_free_trans;
3313         }
3314         err = iwl_eeprom_check_version(priv);
3315         if (err)
3316                 goto out_free_eeprom;
3317
3318         err = iwl_eeprom_check_sku(priv);
3319         if (err)
3320                 goto out_free_eeprom;
3321
3322         /* extract MAC Address */
3323         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3324         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3325         priv->hw->wiphy->addresses = priv->addresses;
3326         priv->hw->wiphy->n_addresses = 1;
3327         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3328         if (num_mac > 1) {
3329                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3330                        ETH_ALEN);
3331                 priv->addresses[1].addr[5]++;
3332                 priv->hw->wiphy->n_addresses++;
3333         }
3334
3335         /************************
3336          * 5. Setup HW constants
3337          ************************/
3338         if (iwl_set_hw_params(priv)) {
3339                 err = -ENOENT;
3340                 IWL_ERR(priv, "failed to set hw parameters\n");
3341                 goto out_free_eeprom;
3342         }
3343
3344         /*******************
3345          * 6. Setup priv
3346          *******************/
3347
3348         err = iwl_init_drv(priv);
3349         if (err)
3350                 goto out_free_eeprom;
3351         /* At this point both hw and priv are initialized. */
3352
3353         /********************
3354          * 7. Setup services
3355          ********************/
3356         iwl_setup_deferred_work(priv);
3357         iwl_setup_rx_handlers(priv);
3358         iwl_testmode_init(priv);
3359
3360         /*********************************************
3361          * 8. Enable interrupts
3362          *********************************************/
3363
3364         iwl_enable_rfkill_int(priv);
3365
3366         /* If platform's RF_KILL switch is NOT set to KILL */
3367         if (iwl_read32(bus(priv),
3368                         CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3369                 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3370         else
3371                 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3372
3373         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3374                 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3375
3376         iwl_power_initialize(priv);
3377         iwl_tt_initialize(priv);
3378
3379         init_completion(&priv->firmware_loading_complete);
3380
3381         err = iwl_request_firmware(priv, true);
3382         if (err)
3383                 goto out_destroy_workqueue;
3384
3385         return 0;
3386
3387 out_destroy_workqueue:
3388         destroy_workqueue(priv->shrd->workqueue);
3389         priv->shrd->workqueue = NULL;
3390         iwl_uninit_drv(priv);
3391 out_free_eeprom:
3392         iwl_eeprom_free(priv);
3393 out_free_trans:
3394         iwl_trans_free(trans(priv));
3395 out_free_traffic_mem:
3396         iwl_free_traffic_mem(priv);
3397         ieee80211_free_hw(priv->hw);
3398 out:
3399         return err;
3400 }
3401
3402 void __devexit iwl_remove(struct iwl_priv * priv)
3403 {
3404         wait_for_completion(&priv->firmware_loading_complete);
3405
3406         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3407
3408         iwl_dbgfs_unregister(priv);
3409         sysfs_remove_group(&priv->bus->dev->kobj,
3410                            &iwl_attribute_group);
3411
3412         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3413          * to be called and iwl_down since we are removing the device
3414          * we need to set STATUS_EXIT_PENDING bit.
3415          */
3416         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3417
3418         iwl_testmode_cleanup(priv);
3419         iwl_leds_exit(priv);
3420
3421         if (priv->mac80211_registered) {
3422                 ieee80211_unregister_hw(priv->hw);
3423                 priv->mac80211_registered = 0;
3424         }
3425
3426         iwl_tt_exit(priv);
3427
3428         /*This will stop the queues, move the device to low power state */
3429         iwl_trans_stop_device(trans(priv));
3430
3431         iwl_dealloc_ucode(priv);
3432
3433         iwl_eeprom_free(priv);
3434
3435         /*netif_stop_queue(dev); */
3436         flush_workqueue(priv->shrd->workqueue);
3437
3438         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3439          * priv->shrd->workqueue... so we can't take down the workqueue
3440          * until now... */
3441         destroy_workqueue(priv->shrd->workqueue);
3442         priv->shrd->workqueue = NULL;
3443         iwl_free_traffic_mem(priv);
3444
3445         iwl_trans_free(trans(priv));
3446
3447         bus_set_drv_data(priv->bus, NULL);
3448
3449         iwl_uninit_drv(priv);
3450
3451         dev_kfree_skb(priv->beacon_skb);
3452
3453         ieee80211_free_hw(priv->hw);
3454 }
3455
3456
3457 /*****************************************************************************
3458  *
3459  * driver and module entry point
3460  *
3461  *****************************************************************************/
3462 static int __init iwl_init(void)
3463 {
3464
3465         int ret;
3466         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3467         pr_info(DRV_COPYRIGHT "\n");
3468
3469         ret = iwlagn_rate_control_register();
3470         if (ret) {
3471                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3472                 return ret;
3473         }
3474
3475         ret = iwl_pci_register_driver();
3476
3477         if (ret)
3478                 goto error_register;
3479         return ret;
3480
3481 error_register:
3482         iwlagn_rate_control_unregister();
3483         return ret;
3484 }
3485
3486 static void __exit iwl_exit(void)
3487 {
3488         iwl_pci_unregister_driver();
3489         iwlagn_rate_control_unregister();
3490 }
3491
3492 module_exit(iwl_exit);
3493 module_init(iwl_init);
3494
3495 #ifdef CONFIG_IWLWIFI_DEBUG
3496 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3497                    S_IRUGO | S_IWUSR);
3498 MODULE_PARM_DESC(debug, "debug output mask");
3499 #endif
3500
3501 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3502 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3503 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3504 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3505 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3506 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3507 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3508                    int, S_IRUGO);
3509 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3510 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3511 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3512
3513 module_param_named(ucode_alternative,
3514                    iwlagn_mod_params.wanted_ucode_alternative,
3515                    int, S_IRUGO);
3516 MODULE_PARM_DESC(ucode_alternative,
3517                  "specify ucode alternative to use from ucode file");
3518
3519 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3520                    int, S_IRUGO);
3521 MODULE_PARM_DESC(antenna_coupling,
3522                  "specify antenna coupling in dB (defualt: 0 dB)");
3523
3524 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3525                    bool, S_IRUGO);
3526 MODULE_PARM_DESC(bt_ch_inhibition,
3527                  "Enable BT channel inhibition (default: enable)");
3528
3529 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3530 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3531
3532 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3533 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3534
3535 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3536 MODULE_PARM_DESC(wd_disable,
3537                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3538
3539 /*
3540  * set bt_coex_active to true, uCode will do kill/defer
3541  * every time the priority line is asserted (BT is sending signals on the
3542  * priority line in the PCIx).
3543  * set bt_coex_active to false, uCode will ignore the BT activity and
3544  * perform the normal operation
3545  *
3546  * User might experience transmit issue on some platform due to WiFi/BT
3547  * co-exist problem. The possible behaviors are:
3548  *   Able to scan and finding all the available AP
3549  *   Not able to associate with any AP
3550  * On those platforms, WiFi communication can be restored by set
3551  * "bt_coex_active" module parameter to "false"
3552  *
3553  * default: bt_coex_active = true (BT_COEX_ENABLE)
3554  */
3555 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3556                 bool, S_IRUGO);
3557 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3558
3559 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3560 MODULE_PARM_DESC(led_mode, "0=system default, "
3561                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3562
3563 module_param_named(power_save, iwlagn_mod_params.power_save,
3564                 bool, S_IRUGO);
3565 MODULE_PARM_DESC(power_save,
3566                  "enable WiFi power management (default: disable)");
3567
3568 module_param_named(power_level, iwlagn_mod_params.power_level,
3569                 int, S_IRUGO);
3570 MODULE_PARM_DESC(power_level,
3571                  "default power save level (range from 1 - 5, default: 1)");
3572
3573 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3574                 bool, S_IRUGO);
3575 MODULE_PARM_DESC(auto_agg,
3576                  "enable agg w/o check traffic load (default: enable)");
3577
3578 /*
3579  * For now, keep using power level 1 instead of automatically
3580  * adjusting ...
3581  */
3582 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3583                 bool, S_IRUGO);
3584 MODULE_PARM_DESC(no_sleep_autoadjust,
3585                  "don't automatically adjust sleep level "
3586                  "according to maximum network latency (default: true)");