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
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/slab.h>
  36 #include <linux/dma-mapping.h>
  37 #include <linux/delay.h>
  38 #include <linux/sched.h>
  39 #include <linux/skbuff.h>
  40 #include <linux/netdevice.h>
  41 #include <linux/wireless.h>
  42 #include <linux/firmware.h>
  43 #include <linux/etherdevice.h>
  44 #include <linux/if_arp.h>
  45
  46 #include <net/mac80211.h>
  47
  48 #include <asm/div64.h>
  49
  50 #include "iwl-eeprom.h"
  51 #include "iwl-dev.h"
  52 #include "iwl-core.h"
  53 #include "iwl-io.h"
  54 #include "iwl-helpers.h"
  55 #include "iwl-sta.h"
  56 #include "iwl-agn-calib.h"
  57 #include "iwl-agn.h"
  58 #include "iwl-pci.h"
  59 #include "iwl-trans.h"
  60
  61 /******************************************************************************
  62  *
  63  * module boiler plate
  64  *
  65  ******************************************************************************/
  66
  67 /*
  68  * module name, copyright, version, etc.
  69  */
  70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  71
  72 #ifdef CONFIG_IWLWIFI_DEBUG
  73 #define VD "d"
  74 #else
  75 #define VD
  76 #endif
  77
  78 #define DRV_VERSION     IWLWIFI_VERSION VD
  79
  80
  81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  82 MODULE_VERSION(DRV_VERSION);
  83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  84 MODULE_LICENSE("GPL");
  85
  86 static int iwlagn_ant_coupling;
  87 static bool iwlagn_bt_ch_announce = 1;
  88
  89 void iwl_update_chain_flags(struct iwl_priv *priv)
  90 {
  91         struct iwl_rxon_context *ctx;
  92
  93         for_each_context(priv, ctx) {
  94                 iwlagn_set_rxon_chain(priv, ctx);
  95                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  96                         iwlagn_commit_rxon(priv, ctx);
  97         }
  98 }
  99
 100 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 101 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 102                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 103                                u8 *beacon, u32 frame_size)
 104 {
 105         u16 tim_idx;
 106         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 107
 108         /*
 109          * The index is relative to frame start but we start looking at the
 110          * variable-length part of the beacon.
 111          */
 112         tim_idx = mgmt->u.beacon.variable - beacon;
 113
 114         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 115         while ((tim_idx < (frame_size - 2)) &&
 116                         (beacon[tim_idx] != WLAN_EID_TIM))
 117                 tim_idx += beacon[tim_idx+1] + 2;
 118
 119         /* If TIM field was found, set variables */
 120         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 121                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 122                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 123         } else
 124                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 125 }
 126
 127 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 128 {
 129         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 130         struct iwl_host_cmd cmd = {
 131                 .id = REPLY_TX_BEACON,
 132                 .flags = CMD_SYNC,
 133         };
 134         struct ieee80211_tx_info *info;
 135         u32 frame_size;
 136         u32 rate_flags;
 137         u32 rate;
 138
 139         /*
 140          * We have to set up the TX command, the TX Beacon command, and the
 141          * beacon contents.
 142          */
 143
 144         lockdep_assert_held(&priv->mutex);
 145
 146         if (!priv->beacon_ctx) {
 147                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 148                 return 0;
 149         }
 150
 151         if (WARN_ON(!priv->beacon_skb))
 152                 return -EINVAL;
 153
 154         /* Allocate beacon command */
 155         if (!priv->beacon_cmd)
 156                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 157         tx_beacon_cmd = priv->beacon_cmd;
 158         if (!tx_beacon_cmd)
 159                 return -ENOMEM;
 160
 161         frame_size = priv->beacon_skb->len;
 162
 163         /* Set up TX command fields */
 164         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 165         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 166         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 167         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 168                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 169
 170         /* Set up TX beacon command fields */
 171         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 172                            frame_size);
 173
 174         /* Set up packet rate and flags */
 175         info = IEEE80211_SKB_CB(priv->beacon_skb);
 176
 177         /*
 178          * Let's set up the rate at least somewhat correctly;
 179          * it will currently not actually be used by the uCode,
 180          * it uses the broadcast station's rate instead.
 181          */
 182         if (info->control.rates[0].idx < 0 ||
 183             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 184                 rate = 0;
 185         else
 186                 rate = info->control.rates[0].idx;
 187
 188         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 189                                               priv->hw_params.valid_tx_ant);
 190         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 191
 192         /* In mac80211, rates for 5 GHz start at 0 */
 193         if (info->band == IEEE80211_BAND_5GHZ)
 194                 rate += IWL_FIRST_OFDM_RATE;
 195         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 196                 rate_flags |= RATE_MCS_CCK_MSK;
 197
 198         tx_beacon_cmd->tx.rate_n_flags =
 199                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 200
 201         /* Submit command */
 202         cmd.len[0] = sizeof(*tx_beacon_cmd);
 203         cmd.data[0] = tx_beacon_cmd;
 204         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 205         cmd.len[1] = frame_size;
 206         cmd.data[1] = priv->beacon_skb->data;
 207         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 208
 209         return trans_send_cmd(priv, &cmd);
 210 }
 211
 212 static void iwl_bg_beacon_update(struct work_struct *work)
 213 {
 214         struct iwl_priv *priv =
 215                 container_of(work, struct iwl_priv, beacon_update);
 216         struct sk_buff *beacon;
 217
 218         mutex_lock(&priv->mutex);
 219         if (!priv->beacon_ctx) {
 220                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 221                 goto out;
 222         }
 223
 224         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 225                 /*
 226                  * The ucode will send beacon notifications even in
 227                  * IBSS mode, but we don't want to process them. But
 228                  * we need to defer the type check to here due to
 229                  * requiring locking around the beacon_ctx access.
 230                  */
 231                 goto out;
 232         }
 233
 234         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 235         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 236         if (!beacon) {
 237                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 238                 goto out;
 239         }
 240
 241         /* new beacon skb is allocated every time; dispose previous.*/
 242         dev_kfree_skb(priv->beacon_skb);
 243
 244         priv->beacon_skb = beacon;
 245
 246         iwlagn_send_beacon_cmd(priv);
 247  out:
 248         mutex_unlock(&priv->mutex);
 249 }
 250
 251 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 252 {
 253         struct iwl_priv *priv =
 254                 container_of(work, struct iwl_priv, bt_runtime_config);
 255
 256         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 257                 return;
 258
 259         /* dont send host command if rf-kill is on */
 260         if (!iwl_is_ready_rf(priv))
 261                 return;
 262         iwlagn_send_advance_bt_config(priv);
 263 }
 264
 265 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 266 {
 267         struct iwl_priv *priv =
 268                 container_of(work, struct iwl_priv, bt_full_concurrency);
 269         struct iwl_rxon_context *ctx;
 270
 271         mutex_lock(&priv->mutex);
 272
 273         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 274                 goto out;
 275
 276         /* dont send host command if rf-kill is on */
 277         if (!iwl_is_ready_rf(priv))
 278                 goto out;
 279
 280         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 281                        priv->bt_full_concurrent ?
 282                        "full concurrency" : "3-wire");
 283
 284         /*
 285          * LQ & RXON updated cmds must be sent before BT Config cmd
 286          * to avoid 3-wire collisions
 287          */
 288         for_each_context(priv, ctx) {
 289                 iwlagn_set_rxon_chain(priv, ctx);
 290                 iwlagn_commit_rxon(priv, ctx);
 291         }
 292
 293         iwlagn_send_advance_bt_config(priv);
 294 out:
 295         mutex_unlock(&priv->mutex);
 296 }
 297
 298 /**
 299  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 300  *
 301  * This callback is provided in order to send a statistics request.
 302  *
 303  * This timer function is continually reset to execute within
 304  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 305  * was received.  We need to ensure we receive the statistics in order
 306  * to update the temperature used for calibrating the TXPOWER.
 307  */
 308 static void iwl_bg_statistics_periodic(unsigned long data)
 309 {
 310         struct iwl_priv *priv = (struct iwl_priv *)data;
 311
 312         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 313                 return;
 314
 315         /* dont send host command if rf-kill is on */
 316         if (!iwl_is_ready_rf(priv))
 317                 return;
 318
 319         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 320 }
 321
 322
 323 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 324                                         u32 start_idx, u32 num_events,
 325                                         u32 mode)
 326 {
 327         u32 i;
 328         u32 ptr;        /* SRAM byte address of log data */
 329         u32 ev, time, data; /* event log data */
 330         unsigned long reg_flags;
 331
 332         if (mode == 0)
 333                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 334         else
 335                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 336
 337         /* Make sure device is powered up for SRAM reads */
 338         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 339         if (iwl_grab_nic_access(priv)) {
 340                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 341                 return;
 342         }
 343
 344         /* Set starting address; reads will auto-increment */
 345         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
 346         rmb();
 347
 348         /*
 349          * "time" is actually "data" for mode 0 (no timestamp).
 350          * place event id # at far right for easier visual parsing.
 351          */
 352         for (i = 0; i < num_events; i++) {
 353                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 354                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 355                 if (mode == 0) {
 356                         trace_iwlwifi_dev_ucode_cont_event(priv,
 357                                                         0, time, ev);
 358                 } else {
 359                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 360                         trace_iwlwifi_dev_ucode_cont_event(priv,
 361                                                 time, data, ev);
 362                 }
 363         }
 364         /* Allow device to power down */
 365         iwl_release_nic_access(priv);
 366         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 367 }
 368
 369 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 370 {
 371         u32 capacity;   /* event log capacity in # entries */
 372         u32 base;       /* SRAM byte address of event log header */
 373         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 374         u32 num_wraps;  /* # times uCode wrapped to top of log */
 375         u32 next_entry; /* index of next entry to be written by uCode */
 376
 377         base = priv->device_pointers.error_event_table;
 378         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 379                 capacity = iwl_read_targ_mem(priv, base);
 380                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 381                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 382                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 383         } else
 384                 return;
 385
 386         if (num_wraps == priv->event_log.num_wraps) {
 387                 iwl_print_cont_event_trace(priv,
 388                                        base, priv->event_log.next_entry,
 389                                        next_entry - priv->event_log.next_entry,
 390                                        mode);
 391                 priv->event_log.non_wraps_count++;
 392         } else {
 393                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 394                         priv->event_log.wraps_more_count++;
 395                 else
 396                         priv->event_log.wraps_once_count++;
 397                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 398                                 num_wraps - priv->event_log.num_wraps,
 399                                 next_entry, priv->event_log.next_entry);
 400                 if (next_entry < priv->event_log.next_entry) {
 401                         iwl_print_cont_event_trace(priv, base,
 402                                priv->event_log.next_entry,
 403                                capacity - priv->event_log.next_entry,
 404                                mode);
 405
 406                         iwl_print_cont_event_trace(priv, base, 0,
 407                                 next_entry, mode);
 408                 } else {
 409                         iwl_print_cont_event_trace(priv, base,
 410                                next_entry, capacity - next_entry,
 411                                mode);
 412
 413                         iwl_print_cont_event_trace(priv, base, 0,
 414                                 next_entry, mode);
 415                 }
 416         }
 417         priv->event_log.num_wraps = num_wraps;
 418         priv->event_log.next_entry = next_entry;
 419 }
 420
 421 /**
 422  * iwl_bg_ucode_trace - Timer callback to log ucode event
 423  *
 424  * The timer is continually set to execute every
 425  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 426  * this function is to perform continuous uCode event logging operation
 427  * if enabled
 428  */
 429 static void iwl_bg_ucode_trace(unsigned long data)
 430 {
 431         struct iwl_priv *priv = (struct iwl_priv *)data;
 432
 433         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 434                 return;
 435
 436         if (priv->event_log.ucode_trace) {
 437                 iwl_continuous_event_trace(priv);
 438                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 439                 mod_timer(&priv->ucode_trace,
 440                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 441         }
 442 }
 443
 444 static void iwl_bg_tx_flush(struct work_struct *work)
 445 {
 446         struct iwl_priv *priv =
 447                 container_of(work, struct iwl_priv, tx_flush);
 448
 449         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 450                 return;
 451
 452         /* do nothing if rf-kill is on */
 453         if (!iwl_is_ready_rf(priv))
 454                 return;
 455
 456         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 457         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 458 }
 459
 460 /*****************************************************************************
 461  *
 462  * sysfs attributes
 463  *
 464  *****************************************************************************/
 465
 466 #ifdef CONFIG_IWLWIFI_DEBUG
 467
 468 /*
 469  * The following adds a new attribute to the sysfs representation
 470  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 471  * used for controlling the debug level.
 472  *
 473  * See the level definitions in iwl for details.
 474  *
 475  * The debug_level being managed using sysfs below is a per device debug
 476  * level that is used instead of the global debug level if it (the per
 477  * device debug level) is set.
 478  */
 479 static ssize_t show_debug_level(struct device *d,
 480                                 struct device_attribute *attr, char *buf)
 481 {
 482         struct iwl_priv *priv = dev_get_drvdata(d);
 483         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
 484 }
 485 static ssize_t store_debug_level(struct device *d,
 486                                 struct device_attribute *attr,
 487                                  const char *buf, size_t count)
 488 {
 489         struct iwl_priv *priv = dev_get_drvdata(d);
 490         unsigned long val;
 491         int ret;
 492
 493         ret = strict_strtoul(buf, 0, &val);
 494         if (ret)
 495                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
 496         else {
 497                 priv->debug_level = val;
 498                 if (iwl_alloc_traffic_mem(priv))
 499                         IWL_ERR(priv,
 500                                 "Not enough memory to generate traffic log\n");
 501         }
 502         return strnlen(buf, count);
 503 }
 504
 505 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
 506                         show_debug_level, store_debug_level);
 507
 508
 509 #endif /* CONFIG_IWLWIFI_DEBUG */
 510
 511
 512 static ssize_t show_temperature(struct device *d,
 513                                 struct device_attribute *attr, char *buf)
 514 {
 515         struct iwl_priv *priv = dev_get_drvdata(d);
 516
 517         if (!iwl_is_alive(priv))
 518                 return -EAGAIN;
 519
 520         return sprintf(buf, "%d\n", priv->temperature);
 521 }
 522
 523 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
 524
 525 static ssize_t show_tx_power(struct device *d,
 526                              struct device_attribute *attr, char *buf)
 527 {
 528         struct iwl_priv *priv = dev_get_drvdata(d);
 529
 530         if (!iwl_is_ready_rf(priv))
 531                 return sprintf(buf, "off\n");
 532         else
 533                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
 534 }
 535
 536 static ssize_t store_tx_power(struct device *d,
 537                               struct device_attribute *attr,
 538                               const char *buf, size_t count)
 539 {
 540         struct iwl_priv *priv = dev_get_drvdata(d);
 541         unsigned long val;
 542         int ret;
 543
 544         ret = strict_strtoul(buf, 10, &val);
 545         if (ret)
 546                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
 547         else {
 548                 ret = iwl_set_tx_power(priv, val, false);
 549                 if (ret)
 550                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
 551                                 ret);
 552                 else
 553                         ret = count;
 554         }
 555         return ret;
 556 }
 557
 558 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
 559
 560 static struct attribute *iwl_sysfs_entries[] = {
 561         &dev_attr_temperature.attr,
 562         &dev_attr_tx_power.attr,
 563 #ifdef CONFIG_IWLWIFI_DEBUG
 564         &dev_attr_debug_level.attr,
 565 #endif
 566         NULL
 567 };
 568
 569 static struct attribute_group iwl_attribute_group = {
 570         .name = NULL,           /* put in device directory */
 571         .attrs = iwl_sysfs_entries,
 572 };
 573
 574 /******************************************************************************
 575  *
 576  * uCode download functions
 577  *
 578  ******************************************************************************/
 579
 580 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
 581 {
 582         if (desc->v_addr)
 583                 dma_free_coherent(priv->bus.dev, desc->len,
 584                                   desc->v_addr, desc->p_addr);
 585         desc->v_addr = NULL;
 586         desc->len = 0;
 587 }
 588
 589 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
 590 {
 591         iwl_free_fw_desc(priv, &img->code);
 592         iwl_free_fw_desc(priv, &img->data);
 593 }
 594
 595 static void iwl_dealloc_ucode(struct iwl_priv *priv)
 596 {
 597         iwl_free_fw_img(priv, &priv->ucode_rt);
 598         iwl_free_fw_img(priv, &priv->ucode_init);
 599 }
 600
 601 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
 602                              const void *data, size_t len)
 603 {
 604         if (!len) {
 605                 desc->v_addr = NULL;
 606                 return -EINVAL;
 607         }
 608
 609         desc->v_addr = dma_alloc_coherent(priv->bus.dev, len,
 610                                           &desc->p_addr, GFP_KERNEL);
 611         if (!desc->v_addr)
 612                 return -ENOMEM;
 613
 614         desc->len = len;
 615         memcpy(desc->v_addr, data, len);
 616         return 0;
 617 }
 618
 619 struct iwlagn_ucode_capabilities {
 620         u32 max_probe_length;
 621         u32 standard_phy_calibration_size;
 622         u32 flags;
 623 };
 624
 625 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 626 static int iwl_mac_setup_register(struct iwl_priv *priv,
 627                                   struct iwlagn_ucode_capabilities *capa);
 628
 629 #define UCODE_EXPERIMENTAL_INDEX        100
 630 #define UCODE_EXPERIMENTAL_TAG          "exp"
 631
 632 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 633 {
 634         const char *name_pre = priv->cfg->fw_name_pre;
 635         char tag[8];
 636
 637         if (first) {
 638 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 639                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 640                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 641         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 642 #endif
 643                 priv->fw_index = priv->cfg->ucode_api_max;
 644                 sprintf(tag, "%d", priv->fw_index);
 645         } else {
 646                 priv->fw_index--;
 647                 sprintf(tag, "%d", priv->fw_index);
 648         }
 649
 650         if (priv->fw_index < priv->cfg->ucode_api_min) {
 651                 IWL_ERR(priv, "no suitable firmware found!\n");
 652                 return -ENOENT;
 653         }
 654
 655         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 656
 657         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 658                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 659                                 ? "EXPERIMENTAL " : "",
 660                        priv->firmware_name);
 661
 662         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 663                                        priv->bus.dev,
 664                                        GFP_KERNEL, priv, iwl_ucode_callback);
 665 }
 666
 667 struct iwlagn_firmware_pieces {
 668         const void *inst, *data, *init, *init_data;
 669         size_t inst_size, data_size, init_size, init_data_size;
 670
 671         u32 build;
 672
 673         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 674         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 675 };
 676
 677 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 678                                        const struct firmware *ucode_raw,
 679                                        struct iwlagn_firmware_pieces *pieces)
 680 {
 681         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 682         u32 api_ver, hdr_size;
 683         const u8 *src;
 684
 685         priv->ucode_ver = le32_to_cpu(ucode->ver);
 686         api_ver = IWL_UCODE_API(priv->ucode_ver);
 687
 688         switch (api_ver) {
 689         default:
 690                 hdr_size = 28;
 691                 if (ucode_raw->size < hdr_size) {
 692                         IWL_ERR(priv, "File size too small!\n");
 693                         return -EINVAL;
 694                 }
 695                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 696                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 697                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 698                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 699                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 700                 src = ucode->u.v2.data;
 701                 break;
 702         case 0:
 703         case 1:
 704         case 2:
 705                 hdr_size = 24;
 706                 if (ucode_raw->size < hdr_size) {
 707                         IWL_ERR(priv, "File size too small!\n");
 708                         return -EINVAL;
 709                 }
 710                 pieces->build = 0;
 711                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 712                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 713                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 714                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 715                 src = ucode->u.v1.data;
 716                 break;
 717         }
 718
 719         /* Verify size of file vs. image size info in file's header */
 720         if (ucode_raw->size != hdr_size + pieces->inst_size +
 721                                 pieces->data_size + pieces->init_size +
 722                                 pieces->init_data_size) {
 723
 724                 IWL_ERR(priv,
 725                         "uCode file size %d does not match expected size\n",
 726                         (int)ucode_raw->size);
 727                 return -EINVAL;
 728         }
 729
 730         pieces->inst = src;
 731         src += pieces->inst_size;
 732         pieces->data = src;
 733         src += pieces->data_size;
 734         pieces->init = src;
 735         src += pieces->init_size;
 736         pieces->init_data = src;
 737         src += pieces->init_data_size;
 738
 739         return 0;
 740 }
 741
 742 static int iwlagn_wanted_ucode_alternative = 1;
 743
 744 static int iwlagn_load_firmware(struct iwl_priv *priv,
 745                                 const struct firmware *ucode_raw,
 746                                 struct iwlagn_firmware_pieces *pieces,
 747                                 struct iwlagn_ucode_capabilities *capa)
 748 {
 749         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 750         struct iwl_ucode_tlv *tlv;
 751         size_t len = ucode_raw->size;
 752         const u8 *data;
 753         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
 754         u64 alternatives;
 755         u32 tlv_len;
 756         enum iwl_ucode_tlv_type tlv_type;
 757         const u8 *tlv_data;
 758
 759         if (len < sizeof(*ucode)) {
 760                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 761                 return -EINVAL;
 762         }
 763
 764         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 765                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 766                         le32_to_cpu(ucode->magic));
 767                 return -EINVAL;
 768         }
 769
 770         /*
 771          * Check which alternatives are present, and "downgrade"
 772          * when the chosen alternative is not present, warning
 773          * the user when that happens. Some files may not have
 774          * any alternatives, so don't warn in that case.
 775          */
 776         alternatives = le64_to_cpu(ucode->alternatives);
 777         tmp = wanted_alternative;
 778         if (wanted_alternative > 63)
 779                 wanted_alternative = 63;
 780         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 781                 wanted_alternative--;
 782         if (wanted_alternative && wanted_alternative != tmp)
 783                 IWL_WARN(priv,
 784                          "uCode alternative %d not available, choosing %d\n",
 785                          tmp, wanted_alternative);
 786
 787         priv->ucode_ver = le32_to_cpu(ucode->ver);
 788         pieces->build = le32_to_cpu(ucode->build);
 789         data = ucode->data;
 790
 791         len -= sizeof(*ucode);
 792
 793         while (len >= sizeof(*tlv)) {
 794                 u16 tlv_alt;
 795
 796                 len -= sizeof(*tlv);
 797                 tlv = (void *)data;
 798
 799                 tlv_len = le32_to_cpu(tlv->length);
 800                 tlv_type = le16_to_cpu(tlv->type);
 801                 tlv_alt = le16_to_cpu(tlv->alternative);
 802                 tlv_data = tlv->data;
 803
 804                 if (len < tlv_len) {
 805                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 806                                 len, tlv_len);
 807                         return -EINVAL;
 808                 }
 809                 len -= ALIGN(tlv_len, 4);
 810                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 811
 812                 /*
 813                  * Alternative 0 is always valid.
 814                  *
 815                  * Skip alternative TLVs that are not selected.
 816                  */
 817                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 818                         continue;
 819
 820                 switch (tlv_type) {
 821                 case IWL_UCODE_TLV_INST:
 822                         pieces->inst = tlv_data;
 823                         pieces->inst_size = tlv_len;
 824                         break;
 825                 case IWL_UCODE_TLV_DATA:
 826                         pieces->data = tlv_data;
 827                         pieces->data_size = tlv_len;
 828                         break;
 829                 case IWL_UCODE_TLV_INIT:
 830                         pieces->init = tlv_data;
 831                         pieces->init_size = tlv_len;
 832                         break;
 833                 case IWL_UCODE_TLV_INIT_DATA:
 834                         pieces->init_data = tlv_data;
 835                         pieces->init_data_size = tlv_len;
 836                         break;
 837                 case IWL_UCODE_TLV_BOOT:
 838                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 839                         break;
 840                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 841                         if (tlv_len != sizeof(u32))
 842                                 goto invalid_tlv_len;
 843                         capa->max_probe_length =
 844                                         le32_to_cpup((__le32 *)tlv_data);
 845                         break;
 846                 case IWL_UCODE_TLV_PAN:
 847                         if (tlv_len)
 848                                 goto invalid_tlv_len;
 849                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 850                         break;
 851                 case IWL_UCODE_TLV_FLAGS:
 852                         /* must be at least one u32 */
 853                         if (tlv_len < sizeof(u32))
 854                                 goto invalid_tlv_len;
 855                         /* and a proper number of u32s */
 856                         if (tlv_len % sizeof(u32))
 857                                 goto invalid_tlv_len;
 858                         /*
 859                          * This driver only reads the first u32 as
 860                          * right now no more features are defined,
 861                          * if that changes then either the driver
 862                          * will not work with the new firmware, or
 863                          * it'll not take advantage of new features.
 864                          */
 865                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 866                         break;
 867                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 868                         if (tlv_len != sizeof(u32))
 869                                 goto invalid_tlv_len;
 870                         pieces->init_evtlog_ptr =
 871                                         le32_to_cpup((__le32 *)tlv_data);
 872                         break;
 873                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 874                         if (tlv_len != sizeof(u32))
 875                                 goto invalid_tlv_len;
 876                         pieces->init_evtlog_size =
 877                                         le32_to_cpup((__le32 *)tlv_data);
 878                         break;
 879                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 880                         if (tlv_len != sizeof(u32))
 881                                 goto invalid_tlv_len;
 882                         pieces->init_errlog_ptr =
 883                                         le32_to_cpup((__le32 *)tlv_data);
 884                         break;
 885                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 886                         if (tlv_len != sizeof(u32))
 887                                 goto invalid_tlv_len;
 888                         pieces->inst_evtlog_ptr =
 889                                         le32_to_cpup((__le32 *)tlv_data);
 890                         break;
 891                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 892                         if (tlv_len != sizeof(u32))
 893                                 goto invalid_tlv_len;
 894                         pieces->inst_evtlog_size =
 895                                         le32_to_cpup((__le32 *)tlv_data);
 896                         break;
 897                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 898                         if (tlv_len != sizeof(u32))
 899                                 goto invalid_tlv_len;
 900                         pieces->inst_errlog_ptr =
 901                                         le32_to_cpup((__le32 *)tlv_data);
 902                         break;
 903                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 904                         if (tlv_len)
 905                                 goto invalid_tlv_len;
 906                         priv->enhance_sensitivity_table = true;
 907                         break;
 908                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 909                         if (tlv_len != sizeof(u32))
 910                                 goto invalid_tlv_len;
 911                         capa->standard_phy_calibration_size =
 912                                         le32_to_cpup((__le32 *)tlv_data);
 913                         break;
 914                 default:
 915                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
 916                         break;
 917                 }
 918         }
 919
 920         if (len) {
 921                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
 922                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
 923                 return -EINVAL;
 924         }
 925
 926         return 0;
 927
 928  invalid_tlv_len:
 929         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 930         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
 931
 932         return -EINVAL;
 933 }
 934
 935 /**
 936  * iwl_ucode_callback - callback when firmware was loaded
 937  *
 938  * If loaded successfully, copies the firmware into buffers
 939  * for the card to fetch (via DMA).
 940  */
 941 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 942 {
 943         struct iwl_priv *priv = context;
 944         struct iwl_ucode_header *ucode;
 945         int err;
 946         struct iwlagn_firmware_pieces pieces;
 947         const unsigned int api_max = priv->cfg->ucode_api_max;
 948         const unsigned int api_min = priv->cfg->ucode_api_min;
 949         u32 api_ver;
 950         char buildstr[25];
 951         u32 build;
 952         struct iwlagn_ucode_capabilities ucode_capa = {
 953                 .max_probe_length = 200,
 954                 .standard_phy_calibration_size =
 955                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
 956         };
 957
 958         memset(&pieces, 0, sizeof(pieces));
 959
 960         if (!ucode_raw) {
 961                 if (priv->fw_index <= priv->cfg->ucode_api_max)
 962                         IWL_ERR(priv,
 963                                 "request for firmware file '%s' failed.\n",
 964                                 priv->firmware_name);
 965                 goto try_again;
 966         }
 967
 968         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
 969                        priv->firmware_name, ucode_raw->size);
 970
 971         /* Make sure that we got at least the API version number */
 972         if (ucode_raw->size < 4) {
 973                 IWL_ERR(priv, "File size way too small!\n");
 974                 goto try_again;
 975         }
 976
 977         /* Data from ucode file:  header followed by uCode images */
 978         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 979
 980         if (ucode->ver)
 981                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
 982         else
 983                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
 984                                            &ucode_capa);
 985
 986         if (err)
 987                 goto try_again;
 988
 989         api_ver = IWL_UCODE_API(priv->ucode_ver);
 990         build = pieces.build;
 991
 992         /*
 993          * api_ver should match the api version forming part of the
 994          * firmware filename ... but we don't check for that and only rely
 995          * on the API version read from firmware header from here on forward
 996          */
 997         /* no api version check required for experimental uCode */
 998         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 999                 if (api_ver < api_min || api_ver > api_max) {
1000                         IWL_ERR(priv,
1001                                 "Driver unable to support your firmware API. "
1002                                 "Driver supports v%u, firmware is v%u.\n",
1003                                 api_max, api_ver);
1004                         goto try_again;
1005                 }
1006
1007                 if (api_ver != api_max)
1008                         IWL_ERR(priv,
1009                                 "Firmware has old API version. Expected v%u, "
1010                                 "got v%u. New firmware can be obtained "
1011                                 "from http://www.intellinuxwireless.org.\n",
1012                                 api_max, api_ver);
1013         }
1014
1015         if (build)
1016                 sprintf(buildstr, " build %u%s", build,
1017                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1018                                 ? " (EXP)" : "");
1019         else
1020                 buildstr[0] = '\0';
1021
1022         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1023                  IWL_UCODE_MAJOR(priv->ucode_ver),
1024                  IWL_UCODE_MINOR(priv->ucode_ver),
1025                  IWL_UCODE_API(priv->ucode_ver),
1026                  IWL_UCODE_SERIAL(priv->ucode_ver),
1027                  buildstr);
1028
1029         snprintf(priv->hw->wiphy->fw_version,
1030                  sizeof(priv->hw->wiphy->fw_version),
1031                  "%u.%u.%u.%u%s",
1032                  IWL_UCODE_MAJOR(priv->ucode_ver),
1033                  IWL_UCODE_MINOR(priv->ucode_ver),
1034                  IWL_UCODE_API(priv->ucode_ver),
1035                  IWL_UCODE_SERIAL(priv->ucode_ver),
1036                  buildstr);
1037
1038         /*
1039          * For any of the failures below (before allocating pci memory)
1040          * we will try to load a version with a smaller API -- maybe the
1041          * user just got a corrupted version of the latest API.
1042          */
1043
1044         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1045                        priv->ucode_ver);
1046         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1047                        pieces.inst_size);
1048         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1049                        pieces.data_size);
1050         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1051                        pieces.init_size);
1052         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1053                        pieces.init_data_size);
1054
1055         /* Verify that uCode images will fit in card's SRAM */
1056         if (pieces.inst_size > priv->hw_params.max_inst_size) {
1057                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1058                         pieces.inst_size);
1059                 goto try_again;
1060         }
1061
1062         if (pieces.data_size > priv->hw_params.max_data_size) {
1063                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1064                         pieces.data_size);
1065                 goto try_again;
1066         }
1067
1068         if (pieces.init_size > priv->hw_params.max_inst_size) {
1069                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1070                         pieces.init_size);
1071                 goto try_again;
1072         }
1073
1074         if (pieces.init_data_size > priv->hw_params.max_data_size) {
1075                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1076                         pieces.init_data_size);
1077                 goto try_again;
1078         }
1079
1080         /* Allocate ucode buffers for card's bus-master loading ... */
1081
1082         /* Runtime instructions and 2 copies of data:
1083          * 1) unmodified from disk
1084          * 2) backup cache for save/restore during power-downs */
1085         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1086                               pieces.inst, pieces.inst_size))
1087                 goto err_pci_alloc;
1088         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1089                               pieces.data, pieces.data_size))
1090                 goto err_pci_alloc;
1091
1092         /* Initialization instructions and data */
1093         if (pieces.init_size && pieces.init_data_size) {
1094                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1095                                       pieces.init, pieces.init_size))
1096                         goto err_pci_alloc;
1097                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1098                                       pieces.init_data, pieces.init_data_size))
1099                         goto err_pci_alloc;
1100         }
1101
1102         /* Now that we can no longer fail, copy information */
1103
1104         /*
1105          * The (size - 16) / 12 formula is based on the information recorded
1106          * for each event, which is of mode 1 (including timestamp) for all
1107          * new microcodes that include this information.
1108          */
1109         priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
1110         if (pieces.init_evtlog_size)
1111                 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1112         else
1113                 priv->_agn.init_evtlog_size =
1114                         priv->cfg->base_params->max_event_log_size;
1115         priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
1116         priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1117         if (pieces.inst_evtlog_size)
1118                 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1119         else
1120                 priv->_agn.inst_evtlog_size =
1121                         priv->cfg->base_params->max_event_log_size;
1122         priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
1123
1124         priv->new_scan_threshold_behaviour =
1125                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1126
1127         if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1128             (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1129                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1130                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1131         } else
1132                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1133
1134         if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1135                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1136         else
1137                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1138
1139         /*
1140          * figure out the offset of chain noise reset and gain commands
1141          * base on the size of standard phy calibration commands table size
1142          */
1143         if (ucode_capa.standard_phy_calibration_size >
1144             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1145                 ucode_capa.standard_phy_calibration_size =
1146                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1147
1148         priv->_agn.phy_calib_chain_noise_reset_cmd =
1149                 ucode_capa.standard_phy_calibration_size;
1150         priv->_agn.phy_calib_chain_noise_gain_cmd =
1151                 ucode_capa.standard_phy_calibration_size + 1;
1152
1153         /**************************************************
1154          * This is still part of probe() in a sense...
1155          *
1156          * 9. Setup and register with mac80211 and debugfs
1157          **************************************************/
1158         err = iwl_mac_setup_register(priv, &ucode_capa);
1159         if (err)
1160                 goto out_unbind;
1161
1162         err = iwl_dbgfs_register(priv, DRV_NAME);
1163         if (err)
1164                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1165
1166         err = sysfs_create_group(&(priv->bus.dev->kobj),
1167                                         &iwl_attribute_group);
1168         if (err) {
1169                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1170                 goto out_unbind;
1171         }
1172
1173         /* We have our copies now, allow OS release its copies */
1174         release_firmware(ucode_raw);
1175         complete(&priv->_agn.firmware_loading_complete);
1176         return;
1177
1178  try_again:
1179         /* try next, if any */
1180         if (iwl_request_firmware(priv, false))
1181                 goto out_unbind;
1182         release_firmware(ucode_raw);
1183         return;
1184
1185  err_pci_alloc:
1186         IWL_ERR(priv, "failed to allocate pci memory\n");
1187         iwl_dealloc_ucode(priv);
1188  out_unbind:
1189         complete(&priv->_agn.firmware_loading_complete);
1190         device_release_driver(priv->bus.dev);
1191         release_firmware(ucode_raw);
1192 }
1193
1194 static const char * const desc_lookup_text[] = {
1195         "OK",
1196         "FAIL",
1197         "BAD_PARAM",
1198         "BAD_CHECKSUM",
1199         "NMI_INTERRUPT_WDG",
1200         "SYSASSERT",
1201         "FATAL_ERROR",
1202         "BAD_COMMAND",
1203         "HW_ERROR_TUNE_LOCK",
1204         "HW_ERROR_TEMPERATURE",
1205         "ILLEGAL_CHAN_FREQ",
1206         "VCC_NOT_STABLE",
1207         "FH_ERROR",
1208         "NMI_INTERRUPT_HOST",
1209         "NMI_INTERRUPT_ACTION_PT",
1210         "NMI_INTERRUPT_UNKNOWN",
1211         "UCODE_VERSION_MISMATCH",
1212         "HW_ERROR_ABS_LOCK",
1213         "HW_ERROR_CAL_LOCK_FAIL",
1214         "NMI_INTERRUPT_INST_ACTION_PT",
1215         "NMI_INTERRUPT_DATA_ACTION_PT",
1216         "NMI_TRM_HW_ER",
1217         "NMI_INTERRUPT_TRM",
1218         "NMI_INTERRUPT_BREAK_POINT",
1219         "DEBUG_0",
1220         "DEBUG_1",
1221         "DEBUG_2",
1222         "DEBUG_3",
1223 };
1224
1225 static struct { char *name; u8 num; } advanced_lookup[] = {
1226         { "NMI_INTERRUPT_WDG", 0x34 },
1227         { "SYSASSERT", 0x35 },
1228         { "UCODE_VERSION_MISMATCH", 0x37 },
1229         { "BAD_COMMAND", 0x38 },
1230         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1231         { "FATAL_ERROR", 0x3D },
1232         { "NMI_TRM_HW_ERR", 0x46 },
1233         { "NMI_INTERRUPT_TRM", 0x4C },
1234         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1235         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1236         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1237         { "NMI_INTERRUPT_HOST", 0x66 },
1238         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1239         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1240         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1241         { "ADVANCED_SYSASSERT", 0 },
1242 };
1243
1244 static const char *desc_lookup(u32 num)
1245 {
1246         int i;
1247         int max = ARRAY_SIZE(desc_lookup_text);
1248
1249         if (num < max)
1250                 return desc_lookup_text[num];
1251
1252         max = ARRAY_SIZE(advanced_lookup) - 1;
1253         for (i = 0; i < max; i++) {
1254                 if (advanced_lookup[i].num == num)
1255                         break;
1256         }
1257         return advanced_lookup[i].name;
1258 }
1259
1260 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1261 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1262
1263 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1264 {
1265         u32 base;
1266         struct iwl_error_event_table table;
1267
1268         base = priv->device_pointers.error_event_table;
1269         if (priv->ucode_type == IWL_UCODE_INIT) {
1270                 if (!base)
1271                         base = priv->_agn.init_errlog_ptr;
1272         } else {
1273                 if (!base)
1274                         base = priv->_agn.inst_errlog_ptr;
1275         }
1276
1277         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1278                 IWL_ERR(priv,
1279                         "Not valid error log pointer 0x%08X for %s uCode\n",
1280                         base,
1281                         (priv->ucode_type == IWL_UCODE_INIT)
1282                                         ? "Init" : "RT");
1283                 return;
1284         }
1285
1286         iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1287
1288         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1289                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1290                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1291                         priv->status, table.valid);
1292         }
1293
1294         priv->isr_stats.err_code = table.error_id;
1295
1296         trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1297                                       table.data1, table.data2, table.line,
1298                                       table.blink1, table.blink2, table.ilink1,
1299                                       table.ilink2, table.bcon_time, table.gp1,
1300                                       table.gp2, table.gp3, table.ucode_ver,
1301                                       table.hw_ver, table.brd_ver);
1302         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1303                 desc_lookup(table.error_id));
1304         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1305         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1306         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1307         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1308         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1309         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1310         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1311         IWL_ERR(priv, "0x%08X | line\n", table.line);
1312         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1313         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1314         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1315         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1316         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1317         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1318         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1319         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1320         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1321         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1322 }
1323
1324 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1325
1326 /**
1327  * iwl_print_event_log - Dump error event log to syslog
1328  *
1329  */
1330 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1331                                u32 num_events, u32 mode,
1332                                int pos, char **buf, size_t bufsz)
1333 {
1334         u32 i;
1335         u32 base;       /* SRAM byte address of event log header */
1336         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1337         u32 ptr;        /* SRAM byte address of log data */
1338         u32 ev, time, data; /* event log data */
1339         unsigned long reg_flags;
1340
1341         if (num_events == 0)
1342                 return pos;
1343
1344         base = priv->device_pointers.log_event_table;
1345         if (priv->ucode_type == IWL_UCODE_INIT) {
1346                 if (!base)
1347                         base = priv->_agn.init_evtlog_ptr;
1348         } else {
1349                 if (!base)
1350                         base = priv->_agn.inst_evtlog_ptr;
1351         }
1352
1353         if (mode == 0)
1354                 event_size = 2 * sizeof(u32);
1355         else
1356                 event_size = 3 * sizeof(u32);
1357
1358         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1359
1360         /* Make sure device is powered up for SRAM reads */
1361         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1362         iwl_grab_nic_access(priv);
1363
1364         /* Set starting address; reads will auto-increment */
1365         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1366         rmb();
1367
1368         /* "time" is actually "data" for mode 0 (no timestamp).
1369         * place event id # at far right for easier visual parsing. */
1370         for (i = 0; i < num_events; i++) {
1371                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1372                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1373                 if (mode == 0) {
1374                         /* data, ev */
1375                         if (bufsz) {
1376                                 pos += scnprintf(*buf + pos, bufsz - pos,
1377                                                 "EVT_LOG:0x%08x:%04u\n",
1378                                                 time, ev);
1379                         } else {
1380                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1381                                         time, ev);
1382                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1383                                         time, ev);
1384                         }
1385                 } else {
1386                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1387                         if (bufsz) {
1388                                 pos += scnprintf(*buf + pos, bufsz - pos,
1389                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1390                                                  time, data, ev);
1391                         } else {
1392                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1393                                         time, data, ev);
1394                                 trace_iwlwifi_dev_ucode_event(priv, time,
1395                                         data, ev);
1396                         }
1397                 }
1398         }
1399
1400         /* Allow device to power down */
1401         iwl_release_nic_access(priv);
1402         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1403         return pos;
1404 }
1405
1406 /**
1407  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1408  */
1409 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1410                                     u32 num_wraps, u32 next_entry,
1411                                     u32 size, u32 mode,
1412                                     int pos, char **buf, size_t bufsz)
1413 {
1414         /*
1415          * display the newest DEFAULT_LOG_ENTRIES entries
1416          * i.e the entries just before the next ont that uCode would fill.
1417          */
1418         if (num_wraps) {
1419                 if (next_entry < size) {
1420                         pos = iwl_print_event_log(priv,
1421                                                 capacity - (size - next_entry),
1422                                                 size - next_entry, mode,
1423                                                 pos, buf, bufsz);
1424                         pos = iwl_print_event_log(priv, 0,
1425                                                   next_entry, mode,
1426                                                   pos, buf, bufsz);
1427                 } else
1428                         pos = iwl_print_event_log(priv, next_entry - size,
1429                                                   size, mode, pos, buf, bufsz);
1430         } else {
1431                 if (next_entry < size) {
1432                         pos = iwl_print_event_log(priv, 0, next_entry,
1433                                                   mode, pos, buf, bufsz);
1434                 } else {
1435                         pos = iwl_print_event_log(priv, next_entry - size,
1436                                                   size, mode, pos, buf, bufsz);
1437                 }
1438         }
1439         return pos;
1440 }
1441
1442 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1443
1444 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1445                             char **buf, bool display)
1446 {
1447         u32 base;       /* SRAM byte address of event log header */
1448         u32 capacity;   /* event log capacity in # entries */
1449         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1450         u32 num_wraps;  /* # times uCode wrapped to top of log */
1451         u32 next_entry; /* index of next entry to be written by uCode */
1452         u32 size;       /* # entries that we'll print */
1453         u32 logsize;
1454         int pos = 0;
1455         size_t bufsz = 0;
1456
1457         base = priv->device_pointers.log_event_table;
1458         if (priv->ucode_type == IWL_UCODE_INIT) {
1459                 logsize = priv->_agn.init_evtlog_size;
1460                 if (!base)
1461                         base = priv->_agn.init_evtlog_ptr;
1462         } else {
1463                 logsize = priv->_agn.inst_evtlog_size;
1464                 if (!base)
1465                         base = priv->_agn.inst_evtlog_ptr;
1466         }
1467
1468         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1469                 IWL_ERR(priv,
1470                         "Invalid event log pointer 0x%08X for %s uCode\n",
1471                         base,
1472                         (priv->ucode_type == IWL_UCODE_INIT)
1473                                         ? "Init" : "RT");
1474                 return -EINVAL;
1475         }
1476
1477         /* event log header */
1478         capacity = iwl_read_targ_mem(priv, base);
1479         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1480         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1481         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1482
1483         if (capacity > logsize) {
1484                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1485                         capacity, logsize);
1486                 capacity = logsize;
1487         }
1488
1489         if (next_entry > logsize) {
1490                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1491                         next_entry, logsize);
1492                 next_entry = logsize;
1493         }
1494
1495         size = num_wraps ? capacity : next_entry;
1496
1497         /* bail out if nothing in log */
1498         if (size == 0) {
1499                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1500                 return pos;
1501         }
1502
1503         /* enable/disable bt channel inhibition */
1504         priv->bt_ch_announce = iwlagn_bt_ch_announce;
1505
1506 #ifdef CONFIG_IWLWIFI_DEBUG
1507         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1508                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1509                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1510 #else
1511         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1512                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1513 #endif
1514         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1515                 size);
1516
1517 #ifdef CONFIG_IWLWIFI_DEBUG
1518         if (display) {
1519                 if (full_log)
1520                         bufsz = capacity * 48;
1521                 else
1522                         bufsz = size * 48;
1523                 *buf = kmalloc(bufsz, GFP_KERNEL);
1524                 if (!*buf)
1525                         return -ENOMEM;
1526         }
1527         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1528                 /*
1529                  * if uCode has wrapped back to top of log,
1530                  * start at the oldest entry,
1531                  * i.e the next one that uCode would fill.
1532                  */
1533                 if (num_wraps)
1534                         pos = iwl_print_event_log(priv, next_entry,
1535                                                 capacity - next_entry, mode,
1536                                                 pos, buf, bufsz);
1537                 /* (then/else) start at top of log */
1538                 pos = iwl_print_event_log(priv, 0,
1539                                           next_entry, mode, pos, buf, bufsz);
1540         } else
1541                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1542                                                 next_entry, size, mode,
1543                                                 pos, buf, bufsz);
1544 #else
1545         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1546                                         next_entry, size, mode,
1547                                         pos, buf, bufsz);
1548 #endif
1549         return pos;
1550 }
1551
1552 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1553 {
1554         struct iwl_ct_kill_config cmd;
1555         struct iwl_ct_kill_throttling_config adv_cmd;
1556         unsigned long flags;
1557         int ret = 0;
1558
1559         spin_lock_irqsave(&priv->lock, flags);
1560         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1561                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1562         spin_unlock_irqrestore(&priv->lock, flags);
1563         priv->thermal_throttle.ct_kill_toggle = false;
1564
1565         if (priv->cfg->base_params->support_ct_kill_exit) {
1566                 adv_cmd.critical_temperature_enter =
1567                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1568                 adv_cmd.critical_temperature_exit =
1569                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1570
1571                 ret = trans_send_cmd_pdu(priv,
1572                                        REPLY_CT_KILL_CONFIG_CMD,
1573                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1574                 if (ret)
1575                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1576                 else
1577                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1578                                         "succeeded, "
1579                                         "critical temperature enter is %d,"
1580                                         "exit is %d\n",
1581                                        priv->hw_params.ct_kill_threshold,
1582                                        priv->hw_params.ct_kill_exit_threshold);
1583         } else {
1584                 cmd.critical_temperature_R =
1585                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1586
1587                 ret = trans_send_cmd_pdu(priv,
1588                                        REPLY_CT_KILL_CONFIG_CMD,
1589                                        CMD_SYNC, sizeof(cmd), &cmd);
1590                 if (ret)
1591                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1592                 else
1593                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1594                                         "succeeded, "
1595                                         "critical temperature is %d\n",
1596                                         priv->hw_params.ct_kill_threshold);
1597         }
1598 }
1599
1600 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1601 {
1602         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1603         struct iwl_host_cmd cmd = {
1604                 .id = CALIBRATION_CFG_CMD,
1605                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1606                 .data = { &calib_cfg_cmd, },
1607         };
1608
1609         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1610         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1611         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1612
1613         return trans_send_cmd(priv, &cmd);
1614 }
1615
1616
1617 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1618 {
1619         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1620           .valid = cpu_to_le32(valid_tx_ant),
1621         };
1622
1623         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1624                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1625                 return trans_send_cmd_pdu(priv,
1626                                         TX_ANT_CONFIGURATION_CMD,
1627                                         CMD_SYNC,
1628                                         sizeof(struct iwl_tx_ant_config_cmd),
1629                                         &tx_ant_cmd);
1630         } else {
1631                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1632                 return -EOPNOTSUPP;
1633         }
1634 }
1635
1636 /**
1637  * iwl_alive_start - called after REPLY_ALIVE notification received
1638  *                   from protocol/runtime uCode (initialization uCode's
1639  *                   Alive gets handled by iwl_init_alive_start()).
1640  */
1641 int iwl_alive_start(struct iwl_priv *priv)
1642 {
1643         int ret = 0;
1644         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1645
1646         /*TODO: this should go to the transport layer */
1647         iwl_reset_ict(priv);
1648
1649         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1650
1651         /* After the ALIVE response, we can send host commands to the uCode */
1652         set_bit(STATUS_ALIVE, &priv->status);
1653
1654         /* Enable watchdog to monitor the driver tx queues */
1655         iwl_setup_watchdog(priv);
1656
1657         if (iwl_is_rfkill(priv))
1658                 return -ERFKILL;
1659
1660         /* download priority table before any calibration request */
1661         if (priv->cfg->bt_params &&
1662             priv->cfg->bt_params->advanced_bt_coexist) {
1663                 /* Configure Bluetooth device coexistence support */
1664                 if (priv->cfg->bt_params->bt_sco_disable)
1665                         priv->bt_enable_pspoll = false;
1666                 else
1667                         priv->bt_enable_pspoll = true;
1668
1669                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1670                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1671                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1672                 iwlagn_send_advance_bt_config(priv);
1673                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1674                 priv->cur_rssi_ctx = NULL;
1675
1676                 iwlagn_send_prio_tbl(priv);
1677
1678                 /* FIXME: w/a to force change uCode BT state machine */
1679                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1680                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1681                 if (ret)
1682                         return ret;
1683                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1684                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1685                 if (ret)
1686                         return ret;
1687         } else {
1688                 /*
1689                  * default is 2-wire BT coexexistence support
1690                  */
1691                 iwl_send_bt_config(priv);
1692         }
1693
1694         if (priv->hw_params.calib_rt_cfg)
1695                 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
1696
1697         ieee80211_wake_queues(priv->hw);
1698
1699         priv->active_rate = IWL_RATES_MASK;
1700
1701         /* Configure Tx antenna selection based on H/W config */
1702         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1703
1704         if (iwl_is_associated_ctx(ctx)) {
1705                 struct iwl_rxon_cmd *active_rxon =
1706                                 (struct iwl_rxon_cmd *)&ctx->active;
1707                 /* apply any changes in staging */
1708                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1709                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1710         } else {
1711                 struct iwl_rxon_context *tmp;
1712                 /* Initialize our rx_config data */
1713                 for_each_context(priv, tmp)
1714                         iwl_connection_init_rx_config(priv, tmp);
1715
1716                 iwlagn_set_rxon_chain(priv, ctx);
1717         }
1718
1719         iwl_reset_run_time_calib(priv);
1720
1721         set_bit(STATUS_READY, &priv->status);
1722
1723         /* Configure the adapter for unassociated operation */
1724         ret = iwlagn_commit_rxon(priv, ctx);
1725         if (ret)
1726                 return ret;
1727
1728         /* At this point, the NIC is initialized and operational */
1729         iwl_rf_kill_ct_config(priv);
1730
1731         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1732
1733         return iwl_power_update_mode(priv, true);
1734 }
1735
1736 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1737
1738 static void __iwl_down(struct iwl_priv *priv)
1739 {
1740         int exit_pending;
1741
1742         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1743
1744         iwl_scan_cancel_timeout(priv, 200);
1745
1746         exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1747
1748         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1749          * to prevent rearm timer */
1750         del_timer_sync(&priv->watchdog);
1751
1752         iwl_clear_ucode_stations(priv, NULL);
1753         iwl_dealloc_bcast_stations(priv);
1754         iwl_clear_driver_stations(priv);
1755
1756         /* reset BT coex data */
1757         priv->bt_status = 0;
1758         priv->cur_rssi_ctx = NULL;
1759         priv->bt_is_sco = 0;
1760         if (priv->cfg->bt_params)
1761                 priv->bt_traffic_load =
1762                          priv->cfg->bt_params->bt_init_traffic_load;
1763         else
1764                 priv->bt_traffic_load = 0;
1765         priv->bt_full_concurrent = false;
1766         priv->bt_ci_compliance = 0;
1767
1768         /* Wipe out the EXIT_PENDING status bit if we are not actually
1769          * exiting the module */
1770         if (!exit_pending)
1771                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1772
1773         if (priv->mac80211_registered)
1774                 ieee80211_stop_queues(priv->hw);
1775
1776         /* Clear out all status bits but a few that are stable across reset */
1777         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1778                                 STATUS_RF_KILL_HW |
1779                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1780                                 STATUS_GEO_CONFIGURED |
1781                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1782                                 STATUS_FW_ERROR |
1783                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1784                                 STATUS_EXIT_PENDING;
1785
1786         trans_stop_device(priv);
1787
1788         dev_kfree_skb(priv->beacon_skb);
1789         priv->beacon_skb = NULL;
1790 }
1791
1792 static void iwl_down(struct iwl_priv *priv)
1793 {
1794         mutex_lock(&priv->mutex);
1795         __iwl_down(priv);
1796         mutex_unlock(&priv->mutex);
1797
1798         iwl_cancel_deferred_work(priv);
1799 }
1800
1801 #define HW_READY_TIMEOUT (50)
1802
1803 /* Note: returns poll_bit return value, which is >= 0 if success */
1804 static int iwl_set_hw_ready(struct iwl_priv *priv)
1805 {
1806         int ret;
1807
1808         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1809                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
1810
1811         /* See if we got it */
1812         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1813                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1814                                 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
1815                                 HW_READY_TIMEOUT);
1816
1817         IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : "");
1818         return ret;
1819 }
1820
1821 /* Note: returns standard 0/-ERROR code */
1822 int iwl_prepare_card_hw(struct iwl_priv *priv)
1823 {
1824         int ret;
1825
1826         IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
1827
1828         ret = iwl_set_hw_ready(priv);
1829         if (ret >= 0)
1830                 return 0;
1831
1832         /* If HW is not ready, prepare the conditions to check again */
1833         iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
1834                         CSR_HW_IF_CONFIG_REG_PREPARE);
1835
1836         ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
1837                         ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
1838                         CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
1839
1840         if (ret < 0)
1841                 return ret;
1842
1843         /* HW should be ready by now, check again. */
1844         ret = iwl_set_hw_ready(priv);
1845         if (ret >= 0)
1846                 return 0;
1847         return ret;
1848 }
1849
1850 #define MAX_HW_RESTARTS 5
1851
1852 static int __iwl_up(struct iwl_priv *priv)
1853 {
1854         struct iwl_rxon_context *ctx;
1855         int ret;
1856
1857         lockdep_assert_held(&priv->mutex);
1858
1859         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1860                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1861                 return -EIO;
1862         }
1863
1864         for_each_context(priv, ctx) {
1865                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1866                 if (ret) {
1867                         iwl_dealloc_bcast_stations(priv);
1868                         return ret;
1869                 }
1870         }
1871
1872         ret = iwlagn_run_init_ucode(priv);
1873         if (ret) {
1874                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1875                 goto error;
1876         }
1877
1878         ret = iwlagn_load_ucode_wait_alive(priv,
1879                                            &priv->ucode_rt,
1880                                            IWL_UCODE_REGULAR);
1881         if (ret) {
1882                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1883                 goto error;
1884         }
1885
1886         ret = iwl_alive_start(priv);
1887         if (ret)
1888                 goto error;
1889         return 0;
1890
1891  error:
1892         set_bit(STATUS_EXIT_PENDING, &priv->status);
1893         __iwl_down(priv);
1894         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1895
1896         IWL_ERR(priv, "Unable to initialize device.\n");
1897         return ret;
1898 }
1899
1900
1901 /*****************************************************************************
1902  *
1903  * Workqueue callbacks
1904  *
1905  *****************************************************************************/
1906
1907 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1908 {
1909         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1910                         run_time_calib_work);
1911
1912         mutex_lock(&priv->mutex);
1913
1914         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1915             test_bit(STATUS_SCANNING, &priv->status)) {
1916                 mutex_unlock(&priv->mutex);
1917                 return;
1918         }
1919
1920         if (priv->start_calib) {
1921                 iwl_chain_noise_calibration(priv);
1922                 iwl_sensitivity_calibration(priv);
1923         }
1924
1925         mutex_unlock(&priv->mutex);
1926 }
1927
1928 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1929 {
1930         struct iwl_rxon_context *ctx;
1931         bool bt_full_concurrent;
1932         u8 bt_ci_compliance;
1933         u8 bt_load;
1934         u8 bt_status;
1935         bool bt_is_sco;
1936
1937         lockdep_assert_held(&priv->mutex);
1938
1939         for_each_context(priv, ctx)
1940                 ctx->vif = NULL;
1941         priv->is_open = 0;
1942
1943         /*
1944          * __iwl_down() will clear the BT status variables,
1945          * which is correct, but when we restart we really
1946          * want to keep them so restore them afterwards.
1947          *
1948          * The restart process will later pick them up and
1949          * re-configure the hw when we reconfigure the BT
1950          * command.
1951          */
1952         bt_full_concurrent = priv->bt_full_concurrent;
1953         bt_ci_compliance = priv->bt_ci_compliance;
1954         bt_load = priv->bt_traffic_load;
1955         bt_status = priv->bt_status;
1956         bt_is_sco = priv->bt_is_sco;
1957
1958         __iwl_down(priv);
1959
1960         priv->bt_full_concurrent = bt_full_concurrent;
1961         priv->bt_ci_compliance = bt_ci_compliance;
1962         priv->bt_traffic_load = bt_load;
1963         priv->bt_status = bt_status;
1964         priv->bt_is_sco = bt_is_sco;
1965 }
1966
1967 static void iwl_bg_restart(struct work_struct *data)
1968 {
1969         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1970
1971         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1972                 return;
1973
1974         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
1975                 mutex_lock(&priv->mutex);
1976                 iwlagn_prepare_restart(priv);
1977                 mutex_unlock(&priv->mutex);
1978                 iwl_cancel_deferred_work(priv);
1979                 ieee80211_restart_hw(priv->hw);
1980         } else {
1981                 WARN_ON(1);
1982         }
1983 }
1984
1985 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
1986                                  struct ieee80211_channel *chan,
1987                                  enum nl80211_channel_type channel_type,
1988                                  unsigned int wait)
1989 {
1990         struct iwl_priv *priv = hw->priv;
1991         int ret;
1992
1993         /* Not supported if we don't have PAN */
1994         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
1995                 ret = -EOPNOTSUPP;
1996                 goto free;
1997         }
1998
1999         /* Not supported on pre-P2P firmware */
2000         if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2001                                         BIT(NL80211_IFTYPE_P2P_CLIENT))) {
2002                 ret = -EOPNOTSUPP;
2003                 goto free;
2004         }
2005
2006         mutex_lock(&priv->mutex);
2007
2008         if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
2009                 /*
2010                  * If the PAN context is free, use the normal
2011                  * way of doing remain-on-channel offload + TX.
2012                  */
2013                 ret = 1;
2014                 goto out;
2015         }
2016
2017         /* TODO: queue up if scanning? */
2018         if (test_bit(STATUS_SCANNING, &priv->status) ||
2019             priv->_agn.offchan_tx_skb) {
2020                 ret = -EBUSY;
2021                 goto out;
2022         }
2023
2024         /*
2025          * max_scan_ie_len doesn't include the blank SSID or the header,
2026          * so need to add that again here.
2027          */
2028         if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2029                 ret = -ENOBUFS;
2030                 goto out;
2031         }
2032
2033         priv->_agn.offchan_tx_skb = skb;
2034         priv->_agn.offchan_tx_timeout = wait;
2035         priv->_agn.offchan_tx_chan = chan;
2036
2037         ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2038                                 IWL_SCAN_OFFCH_TX, chan->band);
2039         if (ret)
2040                 priv->_agn.offchan_tx_skb = NULL;
2041  out:
2042         mutex_unlock(&priv->mutex);
2043  free:
2044         if (ret < 0)
2045                 kfree_skb(skb);
2046
2047         return ret;
2048 }
2049
2050 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2051 {
2052         struct iwl_priv *priv = hw->priv;
2053         int ret;
2054
2055         mutex_lock(&priv->mutex);
2056
2057         if (!priv->_agn.offchan_tx_skb) {
2058                 ret = -EINVAL;
2059                 goto unlock;
2060         }
2061
2062         priv->_agn.offchan_tx_skb = NULL;
2063
2064         ret = iwl_scan_cancel_timeout(priv, 200);
2065         if (ret)
2066                 ret = -EIO;
2067 unlock:
2068         mutex_unlock(&priv->mutex);
2069
2070         return ret;
2071 }
2072
2073 /*****************************************************************************
2074  *
2075  * mac80211 entry point functions
2076  *
2077  *****************************************************************************/
2078
2079 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2080         {
2081                 .max = 1,
2082                 .types = BIT(NL80211_IFTYPE_STATION),
2083         },
2084         {
2085                 .max = 1,
2086                 .types = BIT(NL80211_IFTYPE_AP),
2087         },
2088 };
2089
2090 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2091         {
2092                 .max = 2,
2093                 .types = BIT(NL80211_IFTYPE_STATION),
2094         },
2095 };
2096
2097 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2098         {
2099                 .max = 1,
2100                 .types = BIT(NL80211_IFTYPE_STATION),
2101         },
2102         {
2103                 .max = 1,
2104                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2105                          BIT(NL80211_IFTYPE_AP),
2106         },
2107 };
2108
2109 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2110         {
2111                 .max = 2,
2112                 .types = BIT(NL80211_IFTYPE_STATION),
2113         },
2114         {
2115                 .max = 1,
2116                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2117         },
2118 };
2119
2120 static const struct ieee80211_iface_combination
2121 iwlagn_iface_combinations_dualmode[] = {
2122         { .num_different_channels = 1,
2123           .max_interfaces = 2,
2124           .beacon_int_infra_match = true,
2125           .limits = iwlagn_sta_ap_limits,
2126           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2127         },
2128         { .num_different_channels = 1,
2129           .max_interfaces = 2,
2130           .limits = iwlagn_2sta_limits,
2131           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2132         },
2133 };
2134
2135 static const struct ieee80211_iface_combination
2136 iwlagn_iface_combinations_p2p[] = {
2137         { .num_different_channels = 1,
2138           .max_interfaces = 2,
2139           .beacon_int_infra_match = true,
2140           .limits = iwlagn_p2p_sta_go_limits,
2141           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2142         },
2143         { .num_different_channels = 1,
2144           .max_interfaces = 2,
2145           .limits = iwlagn_p2p_2sta_limits,
2146           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2147         },
2148 };
2149
2150 /*
2151  * Not a mac80211 entry point function, but it fits in with all the
2152  * other mac80211 functions grouped here.
2153  */
2154 static int iwl_mac_setup_register(struct iwl_priv *priv,
2155                                   struct iwlagn_ucode_capabilities *capa)
2156 {
2157         int ret;
2158         struct ieee80211_hw *hw = priv->hw;
2159         struct iwl_rxon_context *ctx;
2160
2161         hw->rate_control_algorithm = "iwl-agn-rs";
2162
2163         /* Tell mac80211 our characteristics */
2164         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2165                     IEEE80211_HW_AMPDU_AGGREGATION |
2166                     IEEE80211_HW_NEED_DTIM_PERIOD |
2167                     IEEE80211_HW_SPECTRUM_MGMT |
2168                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2169
2170         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2171
2172         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2173                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2174
2175         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2176                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2177                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2178
2179         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2180                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2181
2182         hw->sta_data_size = sizeof(struct iwl_station_priv);
2183         hw->vif_data_size = sizeof(struct iwl_vif_priv);
2184
2185         for_each_context(priv, ctx) {
2186                 hw->wiphy->interface_modes |= ctx->interface_modes;
2187                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2188         }
2189
2190         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2191
2192         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2193                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2194                 hw->wiphy->n_iface_combinations =
2195                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2196         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2197                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2198                 hw->wiphy->n_iface_combinations =
2199                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2200         }
2201
2202         hw->wiphy->max_remain_on_channel_duration = 1000;
2203
2204         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2205                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
2206                             WIPHY_FLAG_IBSS_RSN;
2207
2208         if (iwlagn_mod_params.power_save)
2209                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2210         else
2211                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2212
2213         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2214         /* we create the 802.11 header and a zero-length SSID element */
2215         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2216
2217         /* Default value; 4 EDCA QOS priorities */
2218         hw->queues = 4;
2219
2220         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2221
2222         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2223                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2224                         &priv->bands[IEEE80211_BAND_2GHZ];
2225         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2226                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2227                         &priv->bands[IEEE80211_BAND_5GHZ];
2228
2229         iwl_leds_init(priv);
2230
2231         ret = ieee80211_register_hw(priv->hw);
2232         if (ret) {
2233                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2234                 return ret;
2235         }
2236         priv->mac80211_registered = 1;
2237
2238         return 0;
2239 }
2240
2241
2242 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2243 {
2244         struct iwl_priv *priv = hw->priv;
2245         int ret;
2246
2247         IWL_DEBUG_MAC80211(priv, "enter\n");
2248
2249         /* we should be verifying the device is ready to be opened */
2250         mutex_lock(&priv->mutex);
2251         ret = __iwl_up(priv);
2252         mutex_unlock(&priv->mutex);
2253         if (ret)
2254                 return ret;
2255
2256         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2257
2258         /* Now we should be done, and the READY bit should be set. */
2259         if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2260                 ret = -EIO;
2261
2262         iwlagn_led_enable(priv);
2263
2264         priv->is_open = 1;
2265         IWL_DEBUG_MAC80211(priv, "leave\n");
2266         return 0;
2267 }
2268
2269 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2270 {
2271         struct iwl_priv *priv = hw->priv;
2272
2273         IWL_DEBUG_MAC80211(priv, "enter\n");
2274
2275         if (!priv->is_open)
2276                 return;
2277
2278         priv->is_open = 0;
2279
2280         iwl_down(priv);
2281
2282         flush_workqueue(priv->workqueue);
2283
2284         /* User space software may expect getting rfkill changes
2285          * even if interface is down */
2286         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2287         iwl_enable_rfkill_int(priv);
2288
2289         IWL_DEBUG_MAC80211(priv, "leave\n");
2290 }
2291
2292 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2293 {
2294         struct iwl_priv *priv = hw->priv;
2295
2296         IWL_DEBUG_MACDUMP(priv, "enter\n");
2297
2298         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2299                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2300
2301         if (iwlagn_tx_skb(priv, skb))
2302                 dev_kfree_skb_any(skb);
2303
2304         IWL_DEBUG_MACDUMP(priv, "leave\n");
2305 }
2306
2307 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2308                                        struct ieee80211_vif *vif,
2309                                        struct ieee80211_key_conf *keyconf,
2310                                        struct ieee80211_sta *sta,
2311                                        u32 iv32, u16 *phase1key)
2312 {
2313         struct iwl_priv *priv = hw->priv;
2314         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2315
2316         IWL_DEBUG_MAC80211(priv, "enter\n");
2317
2318         iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
2319                             iv32, phase1key);
2320
2321         IWL_DEBUG_MAC80211(priv, "leave\n");
2322 }
2323
2324 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2325                               struct ieee80211_vif *vif,
2326                               struct ieee80211_sta *sta,
2327                               struct ieee80211_key_conf *key)
2328 {
2329         struct iwl_priv *priv = hw->priv;
2330         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2331         struct iwl_rxon_context *ctx = vif_priv->ctx;
2332         int ret;
2333         u8 sta_id;
2334         bool is_default_wep_key = false;
2335
2336         IWL_DEBUG_MAC80211(priv, "enter\n");
2337
2338         if (iwlagn_mod_params.sw_crypto) {
2339                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2340                 return -EOPNOTSUPP;
2341         }
2342
2343         /*
2344          * To support IBSS RSN, don't program group keys in IBSS, the
2345          * hardware will then not attempt to decrypt the frames.
2346          */
2347         if (vif->type == NL80211_IFTYPE_ADHOC &&
2348             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2349                 return -EOPNOTSUPP;
2350
2351         sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
2352         if (sta_id == IWL_INVALID_STATION)
2353                 return -EINVAL;
2354
2355         mutex_lock(&priv->mutex);
2356         iwl_scan_cancel_timeout(priv, 100);
2357
2358         /*
2359          * If we are getting WEP group key and we didn't receive any key mapping
2360          * so far, we are in legacy wep mode (group key only), otherwise we are
2361          * in 1X mode.
2362          * In legacy wep mode, we use another host command to the uCode.
2363          */
2364         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2365              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2366             !sta) {
2367                 if (cmd == SET_KEY)
2368                         is_default_wep_key = !ctx->key_mapping_keys;
2369                 else
2370                         is_default_wep_key =
2371                                         (key->hw_key_idx == HW_KEY_DEFAULT);
2372         }
2373
2374         switch (cmd) {
2375         case SET_KEY:
2376                 if (is_default_wep_key)
2377                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2378                 else
2379                         ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
2380                                                   key, sta_id);
2381
2382                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2383                 break;
2384         case DISABLE_KEY:
2385                 if (is_default_wep_key)
2386                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2387                 else
2388                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
2389
2390                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2391                 break;
2392         default:
2393                 ret = -EINVAL;
2394         }
2395
2396         mutex_unlock(&priv->mutex);
2397         IWL_DEBUG_MAC80211(priv, "leave\n");
2398
2399         return ret;
2400 }
2401
2402 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2403                                    struct ieee80211_vif *vif,
2404                                    enum ieee80211_ampdu_mlme_action action,
2405                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2406                                    u8 buf_size)
2407 {
2408         struct iwl_priv *priv = hw->priv;
2409         int ret = -EINVAL;
2410         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2411
2412         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2413                      sta->addr, tid);
2414
2415         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2416                 return -EACCES;
2417
2418         mutex_lock(&priv->mutex);
2419
2420         switch (action) {
2421         case IEEE80211_AMPDU_RX_START:
2422                 IWL_DEBUG_HT(priv, "start Rx\n");
2423                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2424                 break;
2425         case IEEE80211_AMPDU_RX_STOP:
2426                 IWL_DEBUG_HT(priv, "stop Rx\n");
2427                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2428                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2429                         ret = 0;
2430                 break;
2431         case IEEE80211_AMPDU_TX_START:
2432                 IWL_DEBUG_HT(priv, "start Tx\n");
2433                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2434                 if (ret == 0) {
2435                         priv->_agn.agg_tids_count++;
2436                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2437                                      priv->_agn.agg_tids_count);
2438                 }
2439                 break;
2440         case IEEE80211_AMPDU_TX_STOP:
2441                 IWL_DEBUG_HT(priv, "stop Tx\n");
2442                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2443                 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2444                         priv->_agn.agg_tids_count--;
2445                         IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2446                                      priv->_agn.agg_tids_count);
2447                 }
2448                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2449                         ret = 0;
2450                 if (priv->cfg->ht_params &&
2451                     priv->cfg->ht_params->use_rts_for_aggregation) {
2452                         /*
2453                          * switch off RTS/CTS if it was previously enabled
2454                          */
2455                         sta_priv->lq_sta.lq.general_params.flags &=
2456                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2457                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2458                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2459                 }
2460                 break;
2461         case IEEE80211_AMPDU_TX_OPERATIONAL:
2462                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2463
2464                 trans_txq_agg_setup(priv, iwl_sta_id(sta), tid, buf_size);
2465
2466                 /*
2467                  * If the limit is 0, then it wasn't initialised yet,
2468                  * use the default. We can do that since we take the
2469                  * minimum below, and we don't want to go above our
2470                  * default due to hardware restrictions.
2471                  */
2472                 if (sta_priv->max_agg_bufsize == 0)
2473                         sta_priv->max_agg_bufsize =
2474                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2475
2476                 /*
2477                  * Even though in theory the peer could have different
2478                  * aggregation reorder buffer sizes for different sessions,
2479                  * our ucode doesn't allow for that and has a global limit
2480                  * for each station. Therefore, use the minimum of all the
2481                  * aggregation sessions and our default value.
2482                  */
2483                 sta_priv->max_agg_bufsize =
2484                         min(sta_priv->max_agg_bufsize, buf_size);
2485
2486                 if (priv->cfg->ht_params &&
2487                     priv->cfg->ht_params->use_rts_for_aggregation) {
2488                         /*
2489                          * switch to RTS/CTS if it is the prefer protection
2490                          * method for HT traffic
2491                          */
2492
2493                         sta_priv->lq_sta.lq.general_params.flags |=
2494                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2495                 }
2496
2497                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2498                         sta_priv->max_agg_bufsize;
2499
2500                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2501                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2502
2503                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2504                          sta->addr, tid);
2505                 ret = 0;
2506                 break;
2507         }
2508         mutex_unlock(&priv->mutex);
2509
2510         return ret;
2511 }
2512
2513 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2514                               struct ieee80211_vif *vif,
2515                               struct ieee80211_sta *sta)
2516 {
2517         struct iwl_priv *priv = hw->priv;
2518         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2519         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2520         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2521         int ret;
2522         u8 sta_id;
2523
2524         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2525                         sta->addr);
2526         mutex_lock(&priv->mutex);
2527         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2528                         sta->addr);
2529         sta_priv->common.sta_id = IWL_INVALID_STATION;
2530
2531         atomic_set(&sta_priv->pending_frames, 0);
2532         if (vif->type == NL80211_IFTYPE_AP)
2533                 sta_priv->client = true;
2534
2535         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2536                                      is_ap, sta, &sta_id);
2537         if (ret) {
2538                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2539                         sta->addr, ret);
2540                 /* Should we return success if return code is EEXIST ? */
2541                 mutex_unlock(&priv->mutex);
2542                 return ret;
2543         }
2544
2545         sta_priv->common.sta_id = sta_id;
2546
2547         /* Initialize rate scaling */
2548         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2549                        sta->addr);
2550         iwl_rs_rate_init(priv, sta, sta_id);
2551         mutex_unlock(&priv->mutex);
2552
2553         return 0;
2554 }
2555
2556 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2557                                 struct ieee80211_channel_switch *ch_switch)
2558 {
2559         struct iwl_priv *priv = hw->priv;
2560         const struct iwl_channel_info *ch_info;
2561         struct ieee80211_conf *conf = &hw->conf;
2562         struct ieee80211_channel *channel = ch_switch->channel;
2563         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2564         /*
2565          * MULTI-FIXME
2566          * When we add support for multiple interfaces, we need to
2567          * revisit this. The channel switch command in the device
2568          * only affects the BSS context, but what does that really
2569          * mean? And what if we get a CSA on the second interface?
2570          * This needs a lot of work.
2571          */
2572         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2573         u16 ch;
2574
2575         IWL_DEBUG_MAC80211(priv, "enter\n");
2576
2577         mutex_lock(&priv->mutex);
2578
2579         if (iwl_is_rfkill(priv))
2580                 goto out;
2581
2582         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2583             test_bit(STATUS_SCANNING, &priv->status) ||
2584             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
2585                 goto out;
2586
2587         if (!iwl_is_associated_ctx(ctx))
2588                 goto out;
2589
2590         if (!priv->cfg->lib->set_channel_switch)
2591                 goto out;
2592
2593         ch = channel->hw_value;
2594         if (le16_to_cpu(ctx->active.channel) == ch)
2595                 goto out;
2596
2597         ch_info = iwl_get_channel_info(priv, channel->band, ch);
2598         if (!is_channel_valid(ch_info)) {
2599                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2600                 goto out;
2601         }
2602
2603         spin_lock_irq(&priv->lock);
2604
2605         priv->current_ht_config.smps = conf->smps_mode;
2606
2607         /* Configure HT40 channels */
2608         ctx->ht.enabled = conf_is_ht(conf);
2609         if (ctx->ht.enabled) {
2610                 if (conf_is_ht40_minus(conf)) {
2611                         ctx->ht.extension_chan_offset =
2612                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2613                         ctx->ht.is_40mhz = true;
2614                 } else if (conf_is_ht40_plus(conf)) {
2615                         ctx->ht.extension_chan_offset =
2616                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2617                         ctx->ht.is_40mhz = true;
2618                 } else {
2619                         ctx->ht.extension_chan_offset =
2620                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2621                         ctx->ht.is_40mhz = false;
2622                 }
2623         } else
2624                 ctx->ht.is_40mhz = false;
2625
2626         if ((le16_to_cpu(ctx->staging.channel) != ch))
2627                 ctx->staging.flags = 0;
2628
2629         iwl_set_rxon_channel(priv, channel, ctx);
2630         iwl_set_rxon_ht(priv, ht_conf);
2631         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2632
2633         spin_unlock_irq(&priv->lock);
2634
2635         iwl_set_rate(priv);
2636         /*
2637          * at this point, staging_rxon has the
2638          * configuration for channel switch
2639          */
2640         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2641         priv->switch_channel = cpu_to_le16(ch);
2642         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2643                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2644                 priv->switch_channel = 0;
2645                 ieee80211_chswitch_done(ctx->vif, false);
2646         }
2647
2648 out:
2649         mutex_unlock(&priv->mutex);
2650         IWL_DEBUG_MAC80211(priv, "leave\n");
2651 }
2652
2653 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2654                                     unsigned int changed_flags,
2655                                     unsigned int *total_flags,
2656                                     u64 multicast)
2657 {
2658         struct iwl_priv *priv = hw->priv;
2659         __le32 filter_or = 0, filter_nand = 0;
2660         struct iwl_rxon_context *ctx;
2661
2662 #define CHK(test, flag) do { \
2663         if (*total_flags & (test))              \
2664                 filter_or |= (flag);            \
2665         else                                    \
2666                 filter_nand |= (flag);          \
2667         } while (0)
2668
2669         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2670                         changed_flags, *total_flags);
2671
2672         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2673         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2674         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2675         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2676
2677 #undef CHK
2678
2679         mutex_lock(&priv->mutex);
2680
2681         for_each_context(priv, ctx) {
2682                 ctx->staging.filter_flags &= ~filter_nand;
2683                 ctx->staging.filter_flags |= filter_or;
2684
2685                 /*
2686                  * Not committing directly because hardware can perform a scan,
2687                  * but we'll eventually commit the filter flags change anyway.
2688                  */
2689         }
2690
2691         mutex_unlock(&priv->mutex);
2692
2693         /*
2694          * Receiving all multicast frames is always enabled by the
2695          * default flags setup in iwl_connection_init_rx_config()
2696          * since we currently do not support programming multicast
2697          * filters into the device.
2698          */
2699         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2700                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2701 }
2702
2703 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2704 {
2705         struct iwl_priv *priv = hw->priv;
2706
2707         mutex_lock(&priv->mutex);
2708         IWL_DEBUG_MAC80211(priv, "enter\n");
2709
2710         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2711                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2712                 goto done;
2713         }
2714         if (iwl_is_rfkill(priv)) {
2715                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2716                 goto done;
2717         }
2718
2719         /*
2720          * mac80211 will not push any more frames for transmit
2721          * until the flush is completed
2722          */
2723         if (drop) {
2724                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2725                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2726                         IWL_ERR(priv, "flush request fail\n");
2727                         goto done;
2728                 }
2729         }
2730         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2731         iwlagn_wait_tx_queue_empty(priv);
2732 done:
2733         mutex_unlock(&priv->mutex);
2734         IWL_DEBUG_MAC80211(priv, "leave\n");
2735 }
2736
2737 static void iwlagn_disable_roc(struct iwl_priv *priv)
2738 {
2739         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2740         struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
2741
2742         lockdep_assert_held(&priv->mutex);
2743
2744         if (!ctx->is_active)
2745                 return;
2746
2747         ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
2748         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2749         iwl_set_rxon_channel(priv, chan, ctx);
2750         iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
2751
2752         priv->_agn.hw_roc_channel = NULL;
2753
2754         iwlagn_commit_rxon(priv, ctx);
2755
2756         ctx->is_active = false;
2757 }
2758
2759 static void iwlagn_bg_roc_done(struct work_struct *work)
2760 {
2761         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2762                                              _agn.hw_roc_work.work);
2763
2764         mutex_lock(&priv->mutex);
2765         ieee80211_remain_on_channel_expired(priv->hw);
2766         iwlagn_disable_roc(priv);
2767         mutex_unlock(&priv->mutex);
2768 }
2769
2770 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2771                                      struct ieee80211_channel *channel,
2772                                      enum nl80211_channel_type channel_type,
2773                                      int duration)
2774 {
2775         struct iwl_priv *priv = hw->priv;
2776         int err = 0;
2777
2778         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2779                 return -EOPNOTSUPP;
2780
2781         if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2782                                         BIT(NL80211_IFTYPE_P2P_CLIENT)))
2783                 return -EOPNOTSUPP;
2784
2785         mutex_lock(&priv->mutex);
2786
2787         if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
2788             test_bit(STATUS_SCAN_HW, &priv->status)) {
2789                 err = -EBUSY;
2790                 goto out;
2791         }
2792
2793         priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
2794         priv->_agn.hw_roc_channel = channel;
2795         priv->_agn.hw_roc_chantype = channel_type;
2796         priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
2797         iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
2798         queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work,
2799                            msecs_to_jiffies(duration + 20));
2800
2801         msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
2802         ieee80211_ready_on_channel(priv->hw);
2803
2804  out:
2805         mutex_unlock(&priv->mutex);
2806
2807         return err;
2808 }
2809
2810 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2811 {
2812         struct iwl_priv *priv = hw->priv;
2813
2814         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2815                 return -EOPNOTSUPP;
2816
2817         cancel_delayed_work_sync(&priv->_agn.hw_roc_work);
2818
2819         mutex_lock(&priv->mutex);
2820         iwlagn_disable_roc(priv);
2821         mutex_unlock(&priv->mutex);
2822
2823         return 0;
2824 }
2825
2826 /*****************************************************************************
2827  *
2828  * driver setup and teardown
2829  *
2830  *****************************************************************************/
2831
2832 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2833 {
2834         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
2835
2836         init_waitqueue_head(&priv->wait_command_queue);
2837
2838         INIT_WORK(&priv->restart, iwl_bg_restart);
2839         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2840         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2841         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2842         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2843         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2844         INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done);
2845
2846         iwl_setup_scan_deferred_work(priv);
2847
2848         if (priv->cfg->lib->bt_setup_deferred_work)
2849                 priv->cfg->lib->bt_setup_deferred_work(priv);
2850
2851         init_timer(&priv->statistics_periodic);
2852         priv->statistics_periodic.data = (unsigned long)priv;
2853         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
2854
2855         init_timer(&priv->ucode_trace);
2856         priv->ucode_trace.data = (unsigned long)priv;
2857         priv->ucode_trace.function = iwl_bg_ucode_trace;
2858
2859         init_timer(&priv->watchdog);
2860         priv->watchdog.data = (unsigned long)priv;
2861         priv->watchdog.function = iwl_bg_watchdog;
2862 }
2863
2864 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
2865 {
2866         if (priv->cfg->lib->cancel_deferred_work)
2867                 priv->cfg->lib->cancel_deferred_work(priv);
2868
2869         cancel_work_sync(&priv->run_time_calib_work);
2870         cancel_work_sync(&priv->beacon_update);
2871
2872         iwl_cancel_scan_deferred_work(priv);
2873
2874         cancel_work_sync(&priv->bt_full_concurrency);
2875         cancel_work_sync(&priv->bt_runtime_config);
2876
2877         del_timer_sync(&priv->statistics_periodic);
2878         del_timer_sync(&priv->ucode_trace);
2879 }
2880
2881 static void iwl_init_hw_rates(struct iwl_priv *priv,
2882                               struct ieee80211_rate *rates)
2883 {
2884         int i;
2885
2886         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
2887                 rates[i].bitrate = iwl_rates[i].ieee * 5;
2888                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
2889                 rates[i].hw_value_short = i;
2890                 rates[i].flags = 0;
2891                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
2892                         /*
2893                          * If CCK != 1M then set short preamble rate flag.
2894                          */
2895                         rates[i].flags |=
2896                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
2897                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
2898                 }
2899         }
2900 }
2901
2902 static int iwl_init_drv(struct iwl_priv *priv)
2903 {
2904         int ret;
2905
2906         spin_lock_init(&priv->sta_lock);
2907         spin_lock_init(&priv->hcmd_lock);
2908
2909         mutex_init(&priv->mutex);
2910
2911         priv->ieee_channels = NULL;
2912         priv->ieee_rates = NULL;
2913         priv->band = IEEE80211_BAND_2GHZ;
2914
2915         priv->iw_mode = NL80211_IFTYPE_STATION;
2916         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
2917         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
2918         priv->_agn.agg_tids_count = 0;
2919
2920         /* initialize force reset */
2921         priv->force_reset[IWL_RF_RESET].reset_duration =
2922                 IWL_DELAY_NEXT_FORCE_RF_RESET;
2923         priv->force_reset[IWL_FW_RESET].reset_duration =
2924                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
2925
2926         priv->rx_statistics_jiffies = jiffies;
2927
2928         /* Choose which receivers/antennas to use */
2929         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
2930
2931         iwl_init_scan_params(priv);
2932
2933         /* init bt coex */
2934         if (priv->cfg->bt_params &&
2935             priv->cfg->bt_params->advanced_bt_coexist) {
2936                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2937                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2938                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2939                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
2940                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
2941                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
2942         }
2943
2944         ret = iwl_init_channel_map(priv);
2945         if (ret) {
2946                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
2947                 goto err;
2948         }
2949
2950         ret = iwlcore_init_geos(priv);
2951         if (ret) {
2952                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
2953                 goto err_free_channel_map;
2954         }
2955         iwl_init_hw_rates(priv, priv->ieee_rates);
2956
2957         return 0;
2958
2959 err_free_channel_map:
2960         iwl_free_channel_map(priv);
2961 err:
2962         return ret;
2963 }
2964
2965 static void iwl_uninit_drv(struct iwl_priv *priv)
2966 {
2967         iwl_calib_free_results(priv);
2968         iwlcore_free_geos(priv);
2969         iwl_free_channel_map(priv);
2970         kfree(priv->scan_cmd);
2971         kfree(priv->beacon_cmd);
2972 }
2973
2974 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
2975                            enum ieee80211_rssi_event rssi_event)
2976 {
2977         struct iwl_priv *priv = hw->priv;
2978
2979         mutex_lock(&priv->mutex);
2980
2981         if (priv->cfg->bt_params &&
2982                         priv->cfg->bt_params->advanced_bt_coexist) {
2983                 if (rssi_event == RSSI_EVENT_LOW)
2984                         priv->bt_enable_pspoll = true;
2985                 else if (rssi_event == RSSI_EVENT_HIGH)
2986                         priv->bt_enable_pspoll = false;
2987
2988                 iwlagn_send_advance_bt_config(priv);
2989         } else {
2990                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
2991                                 "ignoring RSSI callback\n");
2992         }
2993
2994         mutex_unlock(&priv->mutex);
2995 }
2996
2997 struct ieee80211_ops iwlagn_hw_ops = {
2998         .tx = iwlagn_mac_tx,
2999         .start = iwlagn_mac_start,
3000         .stop = iwlagn_mac_stop,
3001         .add_interface = iwl_mac_add_interface,
3002         .remove_interface = iwl_mac_remove_interface,
3003         .change_interface = iwl_mac_change_interface,
3004         .config = iwlagn_mac_config,
3005         .configure_filter = iwlagn_configure_filter,
3006         .set_key = iwlagn_mac_set_key,
3007         .update_tkip_key = iwlagn_mac_update_tkip_key,
3008         .conf_tx = iwl_mac_conf_tx,
3009         .bss_info_changed = iwlagn_bss_info_changed,
3010         .ampdu_action = iwlagn_mac_ampdu_action,
3011         .hw_scan = iwl_mac_hw_scan,
3012         .sta_notify = iwlagn_mac_sta_notify,
3013         .sta_add = iwlagn_mac_sta_add,
3014         .sta_remove = iwl_mac_sta_remove,
3015         .channel_switch = iwlagn_mac_channel_switch,
3016         .flush = iwlagn_mac_flush,
3017         .tx_last_beacon = iwl_mac_tx_last_beacon,
3018         .remain_on_channel = iwl_mac_remain_on_channel,
3019         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3020         .offchannel_tx = iwl_mac_offchannel_tx,
3021         .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3022         .rssi_callback = iwl_mac_rssi_callback,
3023         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3024         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3025 };
3026
3027 static u32 iwl_hw_detect(struct iwl_priv *priv)
3028 {
3029         return iwl_read32(priv, CSR_HW_REV);
3030 }
3031
3032 static int iwl_set_hw_params(struct iwl_priv *priv)
3033 {
3034         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3035         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3036         if (iwlagn_mod_params.amsdu_size_8K)
3037                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3038         else
3039                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3040
3041         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3042
3043         if (iwlagn_mod_params.disable_11n)
3044                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3045
3046         /* Device-specific setup */
3047         return priv->cfg->lib->set_hw_params(priv);
3048 }
3049
3050 static const u8 iwlagn_bss_ac_to_fifo[] = {
3051         IWL_TX_FIFO_VO,
3052         IWL_TX_FIFO_VI,
3053         IWL_TX_FIFO_BE,
3054         IWL_TX_FIFO_BK,
3055 };
3056
3057 static const u8 iwlagn_bss_ac_to_queue[] = {
3058         0, 1, 2, 3,
3059 };
3060
3061 static const u8 iwlagn_pan_ac_to_fifo[] = {
3062         IWL_TX_FIFO_VO_IPAN,
3063         IWL_TX_FIFO_VI_IPAN,
3064         IWL_TX_FIFO_BE_IPAN,
3065         IWL_TX_FIFO_BK_IPAN,
3066 };
3067
3068 static const u8 iwlagn_pan_ac_to_queue[] = {
3069         7, 6, 5, 4,
3070 };
3071
3072 /* This function both allocates and initializes hw and priv. */
3073 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3074 {
3075         struct iwl_priv *priv;
3076         /* mac80211 allocates memory for this device instance, including
3077          *   space for this driver's private structure */
3078         struct ieee80211_hw *hw;
3079
3080         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3081         if (hw == NULL) {
3082                 pr_err("%s: Can not allocate network device\n",
3083                        cfg->name);
3084                 goto out;
3085         }
3086
3087         priv = hw->priv;
3088         priv->hw = hw;
3089
3090 out:
3091         return hw;
3092 }
3093
3094 static void iwl_init_context(struct iwl_priv *priv)
3095 {
3096         int i;
3097
3098         /*
3099          * The default context is always valid,
3100          * more may be discovered when firmware
3101          * is loaded.
3102          */
3103         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3104
3105         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3106                 priv->contexts[i].ctxid = i;
3107
3108         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3109         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3110         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3111         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3112         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3113         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3114         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3115         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3116         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3117         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3118         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3119                 BIT(NL80211_IFTYPE_ADHOC);
3120         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3121                 BIT(NL80211_IFTYPE_STATION);
3122         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3123         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3124         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3125         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3126
3127         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3128         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3129                 REPLY_WIPAN_RXON_TIMING;
3130         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3131                 REPLY_WIPAN_RXON_ASSOC;
3132         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3133         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3134         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3135         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3136         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3137         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3138         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3139         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3140         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3141                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3142 #ifdef CONFIG_IWL_P2P
3143         priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3144                 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3145 #endif
3146         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3147         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3148         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3149
3150         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3151 }
3152
3153 int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops,
3154                 struct iwl_cfg *cfg)
3155 {
3156         int err = 0;
3157         struct iwl_priv *priv;
3158         struct ieee80211_hw *hw;
3159         u16 num_mac;
3160         u32 hw_rev;
3161
3162         /************************
3163          * 1. Allocating HW data
3164          ************************/
3165         hw = iwl_alloc_all(cfg);
3166         if (!hw) {
3167                 err = -ENOMEM;
3168                 goto out;
3169         }
3170
3171         priv = hw->priv;
3172
3173         priv->bus.priv = priv;
3174         priv->bus.bus_specific = bus_specific;
3175         priv->bus.ops = bus_ops;
3176         priv->bus.irq = priv->bus.ops->get_irq(&priv->bus);
3177         priv->bus.ops->set_drv_data(&priv->bus, priv);
3178         priv->bus.dev = priv->bus.ops->get_dev(&priv->bus);
3179
3180         /* At this point both hw and priv are allocated. */
3181
3182         SET_IEEE80211_DEV(hw, priv->bus.dev);
3183
3184         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3185         priv->cfg = cfg;
3186         priv->inta_mask = CSR_INI_SET_MASK;
3187
3188         err = iwl_trans_register(priv);
3189         if (err)
3190                 goto out_free_priv;
3191
3192         /* is antenna coupling more than 35dB ? */
3193         priv->bt_ant_couple_ok =
3194                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3195                 true : false;
3196
3197         /* enable/disable bt channel inhibition */
3198         priv->bt_ch_announce = iwlagn_bt_ch_announce;
3199         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3200                        (priv->bt_ch_announce) ? "On" : "Off");
3201
3202         if (iwl_alloc_traffic_mem(priv))
3203                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3204
3205
3206         /* these spin locks will be used in apm_ops.init and EEPROM access
3207          * we should init now
3208          */
3209         spin_lock_init(&priv->reg_lock);
3210         spin_lock_init(&priv->lock);
3211
3212         /*
3213          * stop and reset the on-board processor just in case it is in a
3214          * strange state ... like being left stranded by a primary kernel
3215          * and this is now the kdump kernel trying to start up
3216          */
3217         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3218
3219         /***********************
3220          * 3. Read REV register
3221          ***********************/
3222         hw_rev = iwl_hw_detect(priv);
3223         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3224                 priv->cfg->name, hw_rev);
3225
3226         if (iwl_prepare_card_hw(priv)) {
3227                 err = -EIO;
3228                 IWL_WARN(priv, "Failed, HW not ready\n");
3229                 goto out_free_traffic_mem;
3230         }
3231
3232         /*****************
3233          * 4. Read EEPROM
3234          *****************/
3235         /* Read the EEPROM */
3236         err = iwl_eeprom_init(priv, hw_rev);
3237         if (err) {
3238                 IWL_ERR(priv, "Unable to init EEPROM\n");
3239                 goto out_free_traffic_mem;
3240         }
3241         err = iwl_eeprom_check_version(priv);
3242         if (err)
3243                 goto out_free_eeprom;
3244
3245         err = iwl_eeprom_check_sku(priv);
3246         if (err)
3247                 goto out_free_eeprom;
3248
3249         /* extract MAC Address */
3250         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3251         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3252         priv->hw->wiphy->addresses = priv->addresses;
3253         priv->hw->wiphy->n_addresses = 1;
3254         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3255         if (num_mac > 1) {
3256                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3257                        ETH_ALEN);
3258                 priv->addresses[1].addr[5]++;
3259                 priv->hw->wiphy->n_addresses++;
3260         }
3261
3262         /* initialize all valid contexts */
3263         iwl_init_context(priv);
3264
3265         /************************
3266          * 5. Setup HW constants
3267          ************************/
3268         if (iwl_set_hw_params(priv)) {
3269                 err = -ENOENT;
3270                 IWL_ERR(priv, "failed to set hw parameters\n");
3271                 goto out_free_eeprom;
3272         }
3273
3274         /*******************
3275          * 6. Setup priv
3276          *******************/
3277
3278         err = iwl_init_drv(priv);
3279         if (err)
3280                 goto out_free_eeprom;
3281         /* At this point both hw and priv are initialized. */
3282
3283         /********************
3284          * 7. Setup services
3285          ********************/
3286         iwl_setup_deferred_work(priv);
3287         iwl_setup_rx_handlers(priv);
3288         iwl_testmode_init(priv);
3289
3290         /*********************************************
3291          * 8. Enable interrupts
3292          *********************************************/
3293
3294         iwl_enable_rfkill_int(priv);
3295
3296         /* If platform's RF_KILL switch is NOT set to KILL */
3297         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3298                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3299         else
3300                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3301
3302         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3303                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3304
3305         iwl_power_initialize(priv);
3306         iwl_tt_initialize(priv);
3307
3308         init_completion(&priv->_agn.firmware_loading_complete);
3309
3310         err = iwl_request_firmware(priv, true);
3311         if (err)
3312                 goto out_destroy_workqueue;
3313
3314         return 0;
3315
3316 out_destroy_workqueue:
3317         destroy_workqueue(priv->workqueue);
3318         priv->workqueue = NULL;
3319         iwl_uninit_drv(priv);
3320 out_free_eeprom:
3321         iwl_eeprom_free(priv);
3322 out_free_traffic_mem:
3323         iwl_free_traffic_mem(priv);
3324         trans_free(priv);
3325 out_free_priv:
3326         ieee80211_free_hw(priv->hw);
3327 out:
3328         return err;
3329 }
3330
3331 void __devexit iwl_remove(struct iwl_priv * priv)
3332 {
3333         unsigned long flags;
3334
3335         wait_for_completion(&priv->_agn.firmware_loading_complete);
3336
3337         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3338
3339         iwl_dbgfs_unregister(priv);
3340         sysfs_remove_group(&priv->bus.dev->kobj,
3341                            &iwl_attribute_group);
3342
3343         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3344          * to be called and iwl_down since we are removing the device
3345          * we need to set STATUS_EXIT_PENDING bit.
3346          */
3347         set_bit(STATUS_EXIT_PENDING, &priv->status);
3348
3349         iwl_testmode_cleanup(priv);
3350         iwl_leds_exit(priv);
3351
3352         if (priv->mac80211_registered) {
3353                 ieee80211_unregister_hw(priv->hw);
3354                 priv->mac80211_registered = 0;
3355         }
3356
3357         /* Reset to low power before unloading driver. */
3358         iwl_apm_stop(priv);
3359
3360         iwl_tt_exit(priv);
3361
3362         /* make sure we flush any pending irq or
3363          * tasklet for the driver
3364          */
3365         spin_lock_irqsave(&priv->lock, flags);
3366         iwl_disable_interrupts(priv);
3367         spin_unlock_irqrestore(&priv->lock, flags);
3368
3369         trans_sync_irq(priv);
3370
3371         iwl_dealloc_ucode(priv);
3372
3373         trans_rx_free(priv);
3374         trans_tx_free(priv);
3375
3376         iwl_eeprom_free(priv);
3377
3378         /*netif_stop_queue(dev); */
3379         flush_workqueue(priv->workqueue);
3380
3381         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3382          * priv->workqueue... so we can't take down the workqueue
3383          * until now... */
3384         destroy_workqueue(priv->workqueue);
3385         priv->workqueue = NULL;
3386         iwl_free_traffic_mem(priv);
3387
3388         trans_free(priv);
3389
3390         priv->bus.ops->set_drv_data(&priv->bus, NULL);
3391
3392         iwl_uninit_drv(priv);
3393
3394         dev_kfree_skb(priv->beacon_skb);
3395
3396         ieee80211_free_hw(priv->hw);
3397 }
3398
3399
3400 /*****************************************************************************
3401  *
3402  * driver and module entry point
3403  *
3404  *****************************************************************************/
3405 static int __init iwl_init(void)
3406 {
3407
3408         int ret;
3409         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3410         pr_info(DRV_COPYRIGHT "\n");
3411
3412         ret = iwlagn_rate_control_register();
3413         if (ret) {
3414                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3415                 return ret;
3416         }
3417
3418         ret = iwl_pci_register_driver();
3419
3420         if (ret)
3421                 goto error_register;
3422         return ret;
3423
3424 error_register:
3425         iwlagn_rate_control_unregister();
3426         return ret;
3427 }
3428
3429 static void __exit iwl_exit(void)
3430 {
3431         iwl_pci_unregister_driver();
3432         iwlagn_rate_control_unregister();
3433 }
3434
3435 module_exit(iwl_exit);
3436 module_init(iwl_init);
3437
3438 #ifdef CONFIG_IWLWIFI_DEBUG
3439 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3440 MODULE_PARM_DESC(debug, "debug output mask");
3441 #endif
3442
3443 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3444 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3445 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3446 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3447 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3448 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3449 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3450                    int, S_IRUGO);
3451 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3452 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3453 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3454
3455 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3456                    S_IRUGO);
3457 MODULE_PARM_DESC(ucode_alternative,
3458                  "specify ucode alternative to use from ucode file");
3459
3460 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3461 MODULE_PARM_DESC(antenna_coupling,
3462                  "specify antenna coupling in dB (defualt: 0 dB)");
3463
3464 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3465 MODULE_PARM_DESC(bt_ch_inhibition,
3466                  "Disable BT channel inhibition (default: enable)");
3467
3468 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3469 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3470
3471 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3472 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3473
3474 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3475 MODULE_PARM_DESC(wd_disable,
3476                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3477
3478 /*
3479  * set bt_coex_active to true, uCode will do kill/defer
3480  * every time the priority line is asserted (BT is sending signals on the
3481  * priority line in the PCIx).
3482  * set bt_coex_active to false, uCode will ignore the BT activity and
3483  * perform the normal operation
3484  *
3485  * User might experience transmit issue on some platform due to WiFi/BT
3486  * co-exist problem. The possible behaviors are:
3487  *   Able to scan and finding all the available AP
3488  *   Not able to associate with any AP
3489  * On those platforms, WiFi communication can be restored by set
3490  * "bt_coex_active" module parameter to "false"
3491  *
3492  * default: bt_coex_active = true (BT_COEX_ENABLE)
3493  */
3494 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3495                 bool, S_IRUGO);
3496 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3497
3498 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3499 MODULE_PARM_DESC(led_mode, "0=system default, "
3500                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3501
3502 module_param_named(power_save, iwlagn_mod_params.power_save,
3503                 bool, S_IRUGO);
3504 MODULE_PARM_DESC(power_save,
3505                  "enable WiFi power management (default: disable)");
3506
3507 module_param_named(power_level, iwlagn_mod_params.power_level,
3508                 int, S_IRUGO);
3509 MODULE_PARM_DESC(power_level,
3510                  "default power save level (range from 1 - 5, default: 1)");
3511
3512 /*
3513  * For now, keep using power level 1 instead of automatically
3514  * adjusting ...
3515  */
3516 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3517                 bool, S_IRUGO);
3518 MODULE_PARM_DESC(no_sleep_autoadjust,
3519                  "don't automatically adjust sleep level "
3520                  "according to maximum network latency (default: true)");