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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/dma-mapping.h>
  34 #include <linux/delay.h>
  35 #include <linux/sched.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/firmware.h>
  39 #include <linux/etherdevice.h>
  40 #include <linux/if_arp.h>
  41
  42 #include <net/mac80211.h>
  43
  44 #include <asm/div64.h>
  45
  46 #include "iwl-eeprom.h"
  47 #include "iwl-dev.h"
  48 #include "iwl-core.h"
  49 #include "iwl-io.h"
  50 #include "iwl-helpers.h"
  51 #include "iwl-sta.h"
  52 #include "iwl-agn-calib.h"
  53 #include "iwl-agn.h"
  54 #include "iwl-shared.h"
  55 #include "iwl-bus.h"
  56 #include "iwl-trans.h"
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  66  */
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #define DRV_VERSION     IWLWIFI_VERSION VD
  76
  77
  78 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  79 MODULE_VERSION(DRV_VERSION);
  80 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  81 MODULE_LICENSE("GPL");
  82
  83 void iwl_update_chain_flags(struct iwl_priv *priv)
  84 {
  85         struct iwl_rxon_context *ctx;
  86
  87         for_each_context(priv, ctx) {
  88                 iwlagn_set_rxon_chain(priv, ctx);
  89                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  90                         iwlagn_commit_rxon(priv, ctx);
  91         }
  92 }
  93
  94 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  95 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  96                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  97                                u8 *beacon, u32 frame_size)
  98 {
  99         u16 tim_idx;
 100         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 101
 102         /*
 103          * The index is relative to frame start but we start looking at the
 104          * variable-length part of the beacon.
 105          */
 106         tim_idx = mgmt->u.beacon.variable - beacon;
 107
 108         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 109         while ((tim_idx < (frame_size - 2)) &&
 110                         (beacon[tim_idx] != WLAN_EID_TIM))
 111                 tim_idx += beacon[tim_idx+1] + 2;
 112
 113         /* If TIM field was found, set variables */
 114         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 115                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 116                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 117         } else
 118                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 119 }
 120
 121 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 122 {
 123         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 124         struct iwl_host_cmd cmd = {
 125                 .id = REPLY_TX_BEACON,
 126                 .flags = CMD_SYNC,
 127         };
 128         struct ieee80211_tx_info *info;
 129         u32 frame_size;
 130         u32 rate_flags;
 131         u32 rate;
 132
 133         /*
 134          * We have to set up the TX command, the TX Beacon command, and the
 135          * beacon contents.
 136          */
 137
 138         lockdep_assert_held(&priv->shrd->mutex);
 139
 140         if (!priv->beacon_ctx) {
 141                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 142                 return 0;
 143         }
 144
 145         if (WARN_ON(!priv->beacon_skb))
 146                 return -EINVAL;
 147
 148         /* Allocate beacon command */
 149         if (!priv->beacon_cmd)
 150                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 151         tx_beacon_cmd = priv->beacon_cmd;
 152         if (!tx_beacon_cmd)
 153                 return -ENOMEM;
 154
 155         frame_size = priv->beacon_skb->len;
 156
 157         /* Set up TX command fields */
 158         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 159         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 160         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 161         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 162                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 163
 164         /* Set up TX beacon command fields */
 165         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 166                            frame_size);
 167
 168         /* Set up packet rate and flags */
 169         info = IEEE80211_SKB_CB(priv->beacon_skb);
 170
 171         /*
 172          * Let's set up the rate at least somewhat correctly;
 173          * it will currently not actually be used by the uCode,
 174          * it uses the broadcast station's rate instead.
 175          */
 176         if (info->control.rates[0].idx < 0 ||
 177             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 178                 rate = 0;
 179         else
 180                 rate = info->control.rates[0].idx;
 181
 182         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 183                                               hw_params(priv).valid_tx_ant);
 184         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 185
 186         /* In mac80211, rates for 5 GHz start at 0 */
 187         if (info->band == IEEE80211_BAND_5GHZ)
 188                 rate += IWL_FIRST_OFDM_RATE;
 189         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 190                 rate_flags |= RATE_MCS_CCK_MSK;
 191
 192         tx_beacon_cmd->tx.rate_n_flags =
 193                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 194
 195         /* Submit command */
 196         cmd.len[0] = sizeof(*tx_beacon_cmd);
 197         cmd.data[0] = tx_beacon_cmd;
 198         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 199         cmd.len[1] = frame_size;
 200         cmd.data[1] = priv->beacon_skb->data;
 201         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 202
 203         return iwl_trans_send_cmd(trans(priv), &cmd);
 204 }
 205
 206 static void iwl_bg_beacon_update(struct work_struct *work)
 207 {
 208         struct iwl_priv *priv =
 209                 container_of(work, struct iwl_priv, beacon_update);
 210         struct sk_buff *beacon;
 211
 212         mutex_lock(&priv->shrd->mutex);
 213         if (!priv->beacon_ctx) {
 214                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 215                 goto out;
 216         }
 217
 218         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 219                 /*
 220                  * The ucode will send beacon notifications even in
 221                  * IBSS mode, but we don't want to process them. But
 222                  * we need to defer the type check to here due to
 223                  * requiring locking around the beacon_ctx access.
 224                  */
 225                 goto out;
 226         }
 227
 228         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 229         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 230         if (!beacon) {
 231                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 232                 goto out;
 233         }
 234
 235         /* new beacon skb is allocated every time; dispose previous.*/
 236         dev_kfree_skb(priv->beacon_skb);
 237
 238         priv->beacon_skb = beacon;
 239
 240         iwlagn_send_beacon_cmd(priv);
 241  out:
 242         mutex_unlock(&priv->shrd->mutex);
 243 }
 244
 245 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 246 {
 247         struct iwl_priv *priv =
 248                 container_of(work, struct iwl_priv, bt_runtime_config);
 249
 250         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 251                 return;
 252
 253         /* dont send host command if rf-kill is on */
 254         if (!iwl_is_ready_rf(priv->shrd))
 255                 return;
 256         iwlagn_send_advance_bt_config(priv);
 257 }
 258
 259 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 260 {
 261         struct iwl_priv *priv =
 262                 container_of(work, struct iwl_priv, bt_full_concurrency);
 263         struct iwl_rxon_context *ctx;
 264
 265         mutex_lock(&priv->shrd->mutex);
 266
 267         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 268                 goto out;
 269
 270         /* dont send host command if rf-kill is on */
 271         if (!iwl_is_ready_rf(priv->shrd))
 272                 goto out;
 273
 274         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 275                        priv->bt_full_concurrent ?
 276                        "full concurrency" : "3-wire");
 277
 278         /*
 279          * LQ & RXON updated cmds must be sent before BT Config cmd
 280          * to avoid 3-wire collisions
 281          */
 282         for_each_context(priv, ctx) {
 283                 iwlagn_set_rxon_chain(priv, ctx);
 284                 iwlagn_commit_rxon(priv, ctx);
 285         }
 286
 287         iwlagn_send_advance_bt_config(priv);
 288 out:
 289         mutex_unlock(&priv->shrd->mutex);
 290 }
 291
 292 /**
 293  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 294  *
 295  * This callback is provided in order to send a statistics request.
 296  *
 297  * This timer function is continually reset to execute within
 298  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 299  * was received.  We need to ensure we receive the statistics in order
 300  * to update the temperature used for calibrating the TXPOWER.
 301  */
 302 static void iwl_bg_statistics_periodic(unsigned long data)
 303 {
 304         struct iwl_priv *priv = (struct iwl_priv *)data;
 305
 306         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 307                 return;
 308
 309         /* dont send host command if rf-kill is on */
 310         if (!iwl_is_ready_rf(priv->shrd))
 311                 return;
 312
 313         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 314 }
 315
 316
 317 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 318                                         u32 start_idx, u32 num_events,
 319                                         u32 mode)
 320 {
 321         u32 i;
 322         u32 ptr;        /* SRAM byte address of log data */
 323         u32 ev, time, data; /* event log data */
 324         unsigned long reg_flags;
 325
 326         if (mode == 0)
 327                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 328         else
 329                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 330
 331         /* Make sure device is powered up for SRAM reads */
 332         spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
 333         if (iwl_grab_nic_access(bus(priv))) {
 334                 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 335                 return;
 336         }
 337
 338         /* Set starting address; reads will auto-increment */
 339         iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
 340         rmb();
 341
 342         /*
 343          * "time" is actually "data" for mode 0 (no timestamp).
 344          * place event id # at far right for easier visual parsing.
 345          */
 346         for (i = 0; i < num_events; i++) {
 347                 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 348                 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 349                 if (mode == 0) {
 350                         trace_iwlwifi_dev_ucode_cont_event(priv,
 351                                                         0, time, ev);
 352                 } else {
 353                         data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 354                         trace_iwlwifi_dev_ucode_cont_event(priv,
 355                                                 time, data, ev);
 356                 }
 357         }
 358         /* Allow device to power down */
 359         iwl_release_nic_access(bus(priv));
 360         spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 361 }
 362
 363 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 364 {
 365         u32 capacity;   /* event log capacity in # entries */
 366         u32 base;       /* SRAM byte address of event log header */
 367         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 368         u32 num_wraps;  /* # times uCode wrapped to top of log */
 369         u32 next_entry; /* index of next entry to be written by uCode */
 370
 371         base = priv->device_pointers.error_event_table;
 372         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 373                 capacity = iwl_read_targ_mem(bus(priv), base);
 374                 num_wraps = iwl_read_targ_mem(bus(priv),
 375                                                 base + (2 * sizeof(u32)));
 376                 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
 377                 next_entry = iwl_read_targ_mem(bus(priv),
 378                                                 base + (3 * sizeof(u32)));
 379         } else
 380                 return;
 381
 382         if (num_wraps == priv->event_log.num_wraps) {
 383                 iwl_print_cont_event_trace(priv,
 384                                        base, priv->event_log.next_entry,
 385                                        next_entry - priv->event_log.next_entry,
 386                                        mode);
 387                 priv->event_log.non_wraps_count++;
 388         } else {
 389                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 390                         priv->event_log.wraps_more_count++;
 391                 else
 392                         priv->event_log.wraps_once_count++;
 393                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 394                                 num_wraps - priv->event_log.num_wraps,
 395                                 next_entry, priv->event_log.next_entry);
 396                 if (next_entry < priv->event_log.next_entry) {
 397                         iwl_print_cont_event_trace(priv, base,
 398                                priv->event_log.next_entry,
 399                                capacity - priv->event_log.next_entry,
 400                                mode);
 401
 402                         iwl_print_cont_event_trace(priv, base, 0,
 403                                 next_entry, mode);
 404                 } else {
 405                         iwl_print_cont_event_trace(priv, base,
 406                                next_entry, capacity - next_entry,
 407                                mode);
 408
 409                         iwl_print_cont_event_trace(priv, base, 0,
 410                                 next_entry, mode);
 411                 }
 412         }
 413         priv->event_log.num_wraps = num_wraps;
 414         priv->event_log.next_entry = next_entry;
 415 }
 416
 417 /**
 418  * iwl_bg_ucode_trace - Timer callback to log ucode event
 419  *
 420  * The timer is continually set to execute every
 421  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 422  * this function is to perform continuous uCode event logging operation
 423  * if enabled
 424  */
 425 static void iwl_bg_ucode_trace(unsigned long data)
 426 {
 427         struct iwl_priv *priv = (struct iwl_priv *)data;
 428
 429         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 430                 return;
 431
 432         if (priv->event_log.ucode_trace) {
 433                 iwl_continuous_event_trace(priv);
 434                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 435                 mod_timer(&priv->ucode_trace,
 436                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 437         }
 438 }
 439
 440 static void iwl_bg_tx_flush(struct work_struct *work)
 441 {
 442         struct iwl_priv *priv =
 443                 container_of(work, struct iwl_priv, tx_flush);
 444
 445         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 446                 return;
 447
 448         /* do nothing if rf-kill is on */
 449         if (!iwl_is_ready_rf(priv->shrd))
 450                 return;
 451
 452         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 453         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 454 }
 455
 456 /*****************************************************************************
 457  *
 458  * sysfs attributes
 459  *
 460  *****************************************************************************/
 461
 462 #ifdef CONFIG_IWLWIFI_DEBUG
 463
 464 /*
 465  * The following adds a new attribute to the sysfs representation
 466  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 467  * used for controlling the debug level.
 468  *
 469  * See the level definitions in iwl for details.
 470  *
 471  * The debug_level being managed using sysfs below is a per device debug
 472  * level that is used instead of the global debug level if it (the per
 473  * device debug level) is set.
 474  */
 475 static ssize_t show_debug_level(struct device *d,
 476                                 struct device_attribute *attr, char *buf)
 477 {
 478         struct iwl_shared *shrd = dev_get_drvdata(d);
 479         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd));
 480 }
 481 static ssize_t store_debug_level(struct device *d,
 482                                 struct device_attribute *attr,
 483                                  const char *buf, size_t count)
 484 {
 485         struct iwl_shared *shrd = dev_get_drvdata(d);
 486         struct iwl_priv *priv = shrd->priv;
 487         unsigned long val;
 488         int ret;
 489
 490         ret = strict_strtoul(buf, 0, &val);
 491         if (ret)
 492                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
 493         else {
 494                 shrd->dbg_level_dev = val;
 495                 if (iwl_alloc_traffic_mem(priv))
 496                         IWL_ERR(shrd->priv,
 497                                 "Not enough memory to generate traffic log\n");
 498         }
 499         return strnlen(buf, count);
 500 }
 501
 502 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
 503                         show_debug_level, store_debug_level);
 504
 505
 506 #endif /* CONFIG_IWLWIFI_DEBUG */
 507
 508
 509 static ssize_t show_temperature(struct device *d,
 510                                 struct device_attribute *attr, char *buf)
 511 {
 512         struct iwl_shared *shrd = dev_get_drvdata(d);
 513         struct iwl_priv *priv = shrd->priv;
 514
 515         if (!iwl_is_alive(priv->shrd))
 516                 return -EAGAIN;
 517
 518         return sprintf(buf, "%d\n", priv->temperature);
 519 }
 520
 521 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
 522
 523 static ssize_t show_tx_power(struct device *d,
 524                              struct device_attribute *attr, char *buf)
 525 {
 526         struct iwl_priv *priv = dev_get_drvdata(d);
 527
 528         if (!iwl_is_ready_rf(priv->shrd))
 529                 return sprintf(buf, "off\n");
 530         else
 531                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
 532 }
 533
 534 static ssize_t store_tx_power(struct device *d,
 535                               struct device_attribute *attr,
 536                               const char *buf, size_t count)
 537 {
 538         struct iwl_priv *priv = dev_get_drvdata(d);
 539         unsigned long val;
 540         int ret;
 541
 542         ret = strict_strtoul(buf, 10, &val);
 543         if (ret)
 544                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
 545         else {
 546                 ret = iwl_set_tx_power(priv, val, false);
 547                 if (ret)
 548                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
 549                                 ret);
 550                 else
 551                         ret = count;
 552         }
 553         return ret;
 554 }
 555
 556 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
 557
 558 static struct attribute *iwl_sysfs_entries[] = {
 559         &dev_attr_temperature.attr,
 560         &dev_attr_tx_power.attr,
 561 #ifdef CONFIG_IWLWIFI_DEBUG
 562         &dev_attr_debug_level.attr,
 563 #endif
 564         NULL
 565 };
 566
 567 static struct attribute_group iwl_attribute_group = {
 568         .name = NULL,           /* put in device directory */
 569         .attrs = iwl_sysfs_entries,
 570 };
 571
 572 /******************************************************************************
 573  *
 574  * uCode download functions
 575  *
 576  ******************************************************************************/
 577
 578 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
 579 {
 580         if (desc->v_addr)
 581                 dma_free_coherent(priv->bus->dev, desc->len,
 582                                   desc->v_addr, desc->p_addr);
 583         desc->v_addr = NULL;
 584         desc->len = 0;
 585 }
 586
 587 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
 588 {
 589         iwl_free_fw_desc(priv, &img->code);
 590         iwl_free_fw_desc(priv, &img->data);
 591 }
 592
 593 static void iwl_dealloc_ucode(struct iwl_priv *priv)
 594 {
 595         iwl_free_fw_img(priv, &priv->ucode_rt);
 596         iwl_free_fw_img(priv, &priv->ucode_init);
 597         iwl_free_fw_img(priv, &priv->ucode_wowlan);
 598 }
 599
 600 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
 601                              const void *data, size_t len)
 602 {
 603         if (!len) {
 604                 desc->v_addr = NULL;
 605                 return -EINVAL;
 606         }
 607
 608         desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
 609                                           &desc->p_addr, GFP_KERNEL);
 610         if (!desc->v_addr)
 611                 return -ENOMEM;
 612
 613         desc->len = len;
 614         memcpy(desc->v_addr, data, len);
 615         return 0;
 616 }
 617
 618 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 619 {
 620         static const u8 iwlagn_bss_ac_to_fifo[] = {
 621                 IWL_TX_FIFO_VO,
 622                 IWL_TX_FIFO_VI,
 623                 IWL_TX_FIFO_BE,
 624                 IWL_TX_FIFO_BK,
 625         };
 626         static const u8 iwlagn_bss_ac_to_queue[] = {
 627                 0, 1, 2, 3,
 628         };
 629         static const u8 iwlagn_pan_ac_to_fifo[] = {
 630                 IWL_TX_FIFO_VO_IPAN,
 631                 IWL_TX_FIFO_VI_IPAN,
 632                 IWL_TX_FIFO_BE_IPAN,
 633                 IWL_TX_FIFO_BK_IPAN,
 634         };
 635         static const u8 iwlagn_pan_ac_to_queue[] = {
 636                 7, 6, 5, 4,
 637         };
 638         int i;
 639
 640         /*
 641          * The default context is always valid,
 642          * the PAN context depends on uCode.
 643          */
 644         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 645         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 646                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 647
 648         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 649                 priv->contexts[i].ctxid = i;
 650
 651         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 652         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 653         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 654         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 655         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 656         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 657         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 658         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 659         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
 660         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
 661         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 662                 BIT(NL80211_IFTYPE_ADHOC);
 663         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 664                 BIT(NL80211_IFTYPE_STATION);
 665         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 666         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 667         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 668         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 669
 670         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 671         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 672                 REPLY_WIPAN_RXON_TIMING;
 673         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 674                 REPLY_WIPAN_RXON_ASSOC;
 675         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 676         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 677         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 678         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 679         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 680         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
 681         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
 682         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 683         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 684                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 685
 686         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 687                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 688                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 689                         BIT(NL80211_IFTYPE_P2P_GO);
 690
 691         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 692         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 693         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 694
 695         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 696 }
 697
 698
 699 struct iwlagn_ucode_capabilities {
 700         u32 max_probe_length;
 701         u32 standard_phy_calibration_size;
 702         u32 flags;
 703 };
 704
 705 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 706 static int iwl_mac_setup_register(struct iwl_priv *priv,
 707                                   struct iwlagn_ucode_capabilities *capa);
 708
 709 #define UCODE_EXPERIMENTAL_INDEX        100
 710 #define UCODE_EXPERIMENTAL_TAG          "exp"
 711
 712 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 713 {
 714         const char *name_pre = priv->cfg->fw_name_pre;
 715         char tag[8];
 716
 717         if (first) {
 718 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 719                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 720                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 721         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 722 #endif
 723                 priv->fw_index = priv->cfg->ucode_api_max;
 724                 sprintf(tag, "%d", priv->fw_index);
 725         } else {
 726                 priv->fw_index--;
 727                 sprintf(tag, "%d", priv->fw_index);
 728         }
 729
 730         if (priv->fw_index < priv->cfg->ucode_api_min) {
 731                 IWL_ERR(priv, "no suitable firmware found!\n");
 732                 return -ENOENT;
 733         }
 734
 735         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 736
 737         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 738                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 739                                 ? "EXPERIMENTAL " : "",
 740                        priv->firmware_name);
 741
 742         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 743                                        priv->bus->dev,
 744                                        GFP_KERNEL, priv, iwl_ucode_callback);
 745 }
 746
 747 struct iwlagn_firmware_pieces {
 748         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 749         size_t inst_size, data_size, init_size, init_data_size,
 750                wowlan_inst_size, wowlan_data_size;
 751
 752         u32 build;
 753
 754         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 755         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 756 };
 757
 758 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 759                                        const struct firmware *ucode_raw,
 760                                        struct iwlagn_firmware_pieces *pieces)
 761 {
 762         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 763         u32 api_ver, hdr_size;
 764         const u8 *src;
 765
 766         priv->ucode_ver = le32_to_cpu(ucode->ver);
 767         api_ver = IWL_UCODE_API(priv->ucode_ver);
 768
 769         switch (api_ver) {
 770         default:
 771                 hdr_size = 28;
 772                 if (ucode_raw->size < hdr_size) {
 773                         IWL_ERR(priv, "File size too small!\n");
 774                         return -EINVAL;
 775                 }
 776                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 777                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 778                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 779                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 780                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 781                 src = ucode->u.v2.data;
 782                 break;
 783         case 0:
 784         case 1:
 785         case 2:
 786                 hdr_size = 24;
 787                 if (ucode_raw->size < hdr_size) {
 788                         IWL_ERR(priv, "File size too small!\n");
 789                         return -EINVAL;
 790                 }
 791                 pieces->build = 0;
 792                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 793                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 794                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 795                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 796                 src = ucode->u.v1.data;
 797                 break;
 798         }
 799
 800         /* Verify size of file vs. image size info in file's header */
 801         if (ucode_raw->size != hdr_size + pieces->inst_size +
 802                                 pieces->data_size + pieces->init_size +
 803                                 pieces->init_data_size) {
 804
 805                 IWL_ERR(priv,
 806                         "uCode file size %d does not match expected size\n",
 807                         (int)ucode_raw->size);
 808                 return -EINVAL;
 809         }
 810
 811         pieces->inst = src;
 812         src += pieces->inst_size;
 813         pieces->data = src;
 814         src += pieces->data_size;
 815         pieces->init = src;
 816         src += pieces->init_size;
 817         pieces->init_data = src;
 818         src += pieces->init_data_size;
 819
 820         return 0;
 821 }
 822
 823 static int iwlagn_load_firmware(struct iwl_priv *priv,
 824                                 const struct firmware *ucode_raw,
 825                                 struct iwlagn_firmware_pieces *pieces,
 826                                 struct iwlagn_ucode_capabilities *capa)
 827 {
 828         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 829         struct iwl_ucode_tlv *tlv;
 830         size_t len = ucode_raw->size;
 831         const u8 *data;
 832         int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
 833         int tmp;
 834         u64 alternatives;
 835         u32 tlv_len;
 836         enum iwl_ucode_tlv_type tlv_type;
 837         const u8 *tlv_data;
 838
 839         if (len < sizeof(*ucode)) {
 840                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 841                 return -EINVAL;
 842         }
 843
 844         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 845                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 846                         le32_to_cpu(ucode->magic));
 847                 return -EINVAL;
 848         }
 849
 850         /*
 851          * Check which alternatives are present, and "downgrade"
 852          * when the chosen alternative is not present, warning
 853          * the user when that happens. Some files may not have
 854          * any alternatives, so don't warn in that case.
 855          */
 856         alternatives = le64_to_cpu(ucode->alternatives);
 857         tmp = wanted_alternative;
 858         if (wanted_alternative > 63)
 859                 wanted_alternative = 63;
 860         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 861                 wanted_alternative--;
 862         if (wanted_alternative && wanted_alternative != tmp)
 863                 IWL_WARN(priv,
 864                          "uCode alternative %d not available, choosing %d\n",
 865                          tmp, wanted_alternative);
 866
 867         priv->ucode_ver = le32_to_cpu(ucode->ver);
 868         pieces->build = le32_to_cpu(ucode->build);
 869         data = ucode->data;
 870
 871         len -= sizeof(*ucode);
 872
 873         while (len >= sizeof(*tlv)) {
 874                 u16 tlv_alt;
 875
 876                 len -= sizeof(*tlv);
 877                 tlv = (void *)data;
 878
 879                 tlv_len = le32_to_cpu(tlv->length);
 880                 tlv_type = le16_to_cpu(tlv->type);
 881                 tlv_alt = le16_to_cpu(tlv->alternative);
 882                 tlv_data = tlv->data;
 883
 884                 if (len < tlv_len) {
 885                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 886                                 len, tlv_len);
 887                         return -EINVAL;
 888                 }
 889                 len -= ALIGN(tlv_len, 4);
 890                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 891
 892                 /*
 893                  * Alternative 0 is always valid.
 894                  *
 895                  * Skip alternative TLVs that are not selected.
 896                  */
 897                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 898                         continue;
 899
 900                 switch (tlv_type) {
 901                 case IWL_UCODE_TLV_INST:
 902                         pieces->inst = tlv_data;
 903                         pieces->inst_size = tlv_len;
 904                         break;
 905                 case IWL_UCODE_TLV_DATA:
 906                         pieces->data = tlv_data;
 907                         pieces->data_size = tlv_len;
 908                         break;
 909                 case IWL_UCODE_TLV_INIT:
 910                         pieces->init = tlv_data;
 911                         pieces->init_size = tlv_len;
 912                         break;
 913                 case IWL_UCODE_TLV_INIT_DATA:
 914                         pieces->init_data = tlv_data;
 915                         pieces->init_data_size = tlv_len;
 916                         break;
 917                 case IWL_UCODE_TLV_BOOT:
 918                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 919                         break;
 920                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 921                         if (tlv_len != sizeof(u32))
 922                                 goto invalid_tlv_len;
 923                         capa->max_probe_length =
 924                                         le32_to_cpup((__le32 *)tlv_data);
 925                         break;
 926                 case IWL_UCODE_TLV_PAN:
 927                         if (tlv_len)
 928                                 goto invalid_tlv_len;
 929                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 930                         break;
 931                 case IWL_UCODE_TLV_FLAGS:
 932                         /* must be at least one u32 */
 933                         if (tlv_len < sizeof(u32))
 934                                 goto invalid_tlv_len;
 935                         /* and a proper number of u32s */
 936                         if (tlv_len % sizeof(u32))
 937                                 goto invalid_tlv_len;
 938                         /*
 939                          * This driver only reads the first u32 as
 940                          * right now no more features are defined,
 941                          * if that changes then either the driver
 942                          * will not work with the new firmware, or
 943                          * it'll not take advantage of new features.
 944                          */
 945                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 946                         break;
 947                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 948                         if (tlv_len != sizeof(u32))
 949                                 goto invalid_tlv_len;
 950                         pieces->init_evtlog_ptr =
 951                                         le32_to_cpup((__le32 *)tlv_data);
 952                         break;
 953                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 954                         if (tlv_len != sizeof(u32))
 955                                 goto invalid_tlv_len;
 956                         pieces->init_evtlog_size =
 957                                         le32_to_cpup((__le32 *)tlv_data);
 958                         break;
 959                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 960                         if (tlv_len != sizeof(u32))
 961                                 goto invalid_tlv_len;
 962                         pieces->init_errlog_ptr =
 963                                         le32_to_cpup((__le32 *)tlv_data);
 964                         break;
 965                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 966                         if (tlv_len != sizeof(u32))
 967                                 goto invalid_tlv_len;
 968                         pieces->inst_evtlog_ptr =
 969                                         le32_to_cpup((__le32 *)tlv_data);
 970                         break;
 971                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 972                         if (tlv_len != sizeof(u32))
 973                                 goto invalid_tlv_len;
 974                         pieces->inst_evtlog_size =
 975                                         le32_to_cpup((__le32 *)tlv_data);
 976                         break;
 977                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 978                         if (tlv_len != sizeof(u32))
 979                                 goto invalid_tlv_len;
 980                         pieces->inst_errlog_ptr =
 981                                         le32_to_cpup((__le32 *)tlv_data);
 982                         break;
 983                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 984                         if (tlv_len)
 985                                 goto invalid_tlv_len;
 986                         priv->enhance_sensitivity_table = true;
 987                         break;
 988                 case IWL_UCODE_TLV_WOWLAN_INST:
 989                         pieces->wowlan_inst = tlv_data;
 990                         pieces->wowlan_inst_size = tlv_len;
 991                         break;
 992                 case IWL_UCODE_TLV_WOWLAN_DATA:
 993                         pieces->wowlan_data = tlv_data;
 994                         pieces->wowlan_data_size = tlv_len;
 995                         break;
 996                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 997                         if (tlv_len != sizeof(u32))
 998                                 goto invalid_tlv_len;
 999                         capa->standard_phy_calibration_size =
1000                                         le32_to_cpup((__le32 *)tlv_data);
1001                         break;
1002                 default:
1003                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1004                         break;
1005                 }
1006         }
1007
1008         if (len) {
1009                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1010                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1011                 return -EINVAL;
1012         }
1013
1014         return 0;
1015
1016  invalid_tlv_len:
1017         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1018         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1019
1020         return -EINVAL;
1021 }
1022
1023 /**
1024  * iwl_ucode_callback - callback when firmware was loaded
1025  *
1026  * If loaded successfully, copies the firmware into buffers
1027  * for the card to fetch (via DMA).
1028  */
1029 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1030 {
1031         struct iwl_priv *priv = context;
1032         struct iwl_ucode_header *ucode;
1033         int err;
1034         struct iwlagn_firmware_pieces pieces;
1035         const unsigned int api_max = priv->cfg->ucode_api_max;
1036         unsigned int api_ok = priv->cfg->ucode_api_ok;
1037         const unsigned int api_min = priv->cfg->ucode_api_min;
1038         u32 api_ver;
1039         char buildstr[25];
1040         u32 build;
1041         struct iwlagn_ucode_capabilities ucode_capa = {
1042                 .max_probe_length = 200,
1043                 .standard_phy_calibration_size =
1044                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1045         };
1046
1047         if (!api_ok)
1048                 api_ok = api_max;
1049
1050         memset(&pieces, 0, sizeof(pieces));
1051
1052         if (!ucode_raw) {
1053                 if (priv->fw_index <= api_ok)
1054                         IWL_ERR(priv,
1055                                 "request for firmware file '%s' failed.\n",
1056                                 priv->firmware_name);
1057                 goto try_again;
1058         }
1059
1060         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1061                        priv->firmware_name, ucode_raw->size);
1062
1063         /* Make sure that we got at least the API version number */
1064         if (ucode_raw->size < 4) {
1065                 IWL_ERR(priv, "File size way too small!\n");
1066                 goto try_again;
1067         }
1068
1069         /* Data from ucode file:  header followed by uCode images */
1070         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1071
1072         if (ucode->ver)
1073                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1074         else
1075                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1076                                            &ucode_capa);
1077
1078         if (err)
1079                 goto try_again;
1080
1081         api_ver = IWL_UCODE_API(priv->ucode_ver);
1082         build = pieces.build;
1083
1084         /*
1085          * api_ver should match the api version forming part of the
1086          * firmware filename ... but we don't check for that and only rely
1087          * on the API version read from firmware header from here on forward
1088          */
1089         /* no api version check required for experimental uCode */
1090         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1091                 if (api_ver < api_min || api_ver > api_max) {
1092                         IWL_ERR(priv,
1093                                 "Driver unable to support your firmware API. "
1094                                 "Driver supports v%u, firmware is v%u.\n",
1095                                 api_max, api_ver);
1096                         goto try_again;
1097                 }
1098
1099                 if (api_ver < api_ok) {
1100                         if (api_ok != api_max)
1101                                 IWL_ERR(priv, "Firmware has old API version, "
1102                                         "expected v%u through v%u, got v%u.\n",
1103                                         api_ok, api_max, api_ver);
1104                         else
1105                                 IWL_ERR(priv, "Firmware has old API version, "
1106                                         "expected v%u, got v%u.\n",
1107                                         api_max, api_ver);
1108                         IWL_ERR(priv, "New firmware can be obtained from "
1109                                       "http://www.intellinuxwireless.org/.\n");
1110                 }
1111         }
1112
1113         if (build)
1114                 sprintf(buildstr, " build %u%s", build,
1115                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1116                                 ? " (EXP)" : "");
1117         else
1118                 buildstr[0] = '\0';
1119
1120         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1121                  IWL_UCODE_MAJOR(priv->ucode_ver),
1122                  IWL_UCODE_MINOR(priv->ucode_ver),
1123                  IWL_UCODE_API(priv->ucode_ver),
1124                  IWL_UCODE_SERIAL(priv->ucode_ver),
1125                  buildstr);
1126
1127         snprintf(priv->hw->wiphy->fw_version,
1128                  sizeof(priv->hw->wiphy->fw_version),
1129                  "%u.%u.%u.%u%s",
1130                  IWL_UCODE_MAJOR(priv->ucode_ver),
1131                  IWL_UCODE_MINOR(priv->ucode_ver),
1132                  IWL_UCODE_API(priv->ucode_ver),
1133                  IWL_UCODE_SERIAL(priv->ucode_ver),
1134                  buildstr);
1135
1136         /*
1137          * For any of the failures below (before allocating pci memory)
1138          * we will try to load a version with a smaller API -- maybe the
1139          * user just got a corrupted version of the latest API.
1140          */
1141
1142         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1143                        priv->ucode_ver);
1144         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1145                        pieces.inst_size);
1146         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1147                        pieces.data_size);
1148         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1149                        pieces.init_size);
1150         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1151                        pieces.init_data_size);
1152
1153         /* Verify that uCode images will fit in card's SRAM */
1154         if (pieces.inst_size > hw_params(priv).max_inst_size) {
1155                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1156                         pieces.inst_size);
1157                 goto try_again;
1158         }
1159
1160         if (pieces.data_size > hw_params(priv).max_data_size) {
1161                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1162                         pieces.data_size);
1163                 goto try_again;
1164         }
1165
1166         if (pieces.init_size > hw_params(priv).max_inst_size) {
1167                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1168                         pieces.init_size);
1169                 goto try_again;
1170         }
1171
1172         if (pieces.init_data_size > hw_params(priv).max_data_size) {
1173                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1174                         pieces.init_data_size);
1175                 goto try_again;
1176         }
1177
1178         /* Allocate ucode buffers for card's bus-master loading ... */
1179
1180         /* Runtime instructions and 2 copies of data:
1181          * 1) unmodified from disk
1182          * 2) backup cache for save/restore during power-downs */
1183         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1184                               pieces.inst, pieces.inst_size))
1185                 goto err_pci_alloc;
1186         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1187                               pieces.data, pieces.data_size))
1188                 goto err_pci_alloc;
1189
1190         /* Initialization instructions and data */
1191         if (pieces.init_size && pieces.init_data_size) {
1192                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1193                                       pieces.init, pieces.init_size))
1194                         goto err_pci_alloc;
1195                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1196                                       pieces.init_data, pieces.init_data_size))
1197                         goto err_pci_alloc;
1198         }
1199
1200         /* WoWLAN instructions and data */
1201         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1202                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1203                                       pieces.wowlan_inst,
1204                                       pieces.wowlan_inst_size))
1205                         goto err_pci_alloc;
1206                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1207                                       pieces.wowlan_data,
1208                                       pieces.wowlan_data_size))
1209                         goto err_pci_alloc;
1210         }
1211
1212         /* Now that we can no longer fail, copy information */
1213
1214         /*
1215          * The (size - 16) / 12 formula is based on the information recorded
1216          * for each event, which is of mode 1 (including timestamp) for all
1217          * new microcodes that include this information.
1218          */
1219         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1220         if (pieces.init_evtlog_size)
1221                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1222         else
1223                 priv->init_evtlog_size =
1224                         priv->cfg->base_params->max_event_log_size;
1225         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1226         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1227         if (pieces.inst_evtlog_size)
1228                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1229         else
1230                 priv->inst_evtlog_size =
1231                         priv->cfg->base_params->max_event_log_size;
1232         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1233
1234         priv->new_scan_threshold_behaviour =
1235                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1236
1237         if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1238                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1239
1240         /*
1241          * if not PAN, then don't support P2P -- might be a uCode
1242          * packaging bug or due to the eeprom check above
1243          */
1244         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1245                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1246
1247         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1248                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1249                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1250         } else {
1251                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1252                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1253         }
1254
1255         /*
1256          * figure out the offset of chain noise reset and gain commands
1257          * base on the size of standard phy calibration commands table size
1258          */
1259         if (ucode_capa.standard_phy_calibration_size >
1260             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1261                 ucode_capa.standard_phy_calibration_size =
1262                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1263
1264         priv->phy_calib_chain_noise_reset_cmd =
1265                 ucode_capa.standard_phy_calibration_size;
1266         priv->phy_calib_chain_noise_gain_cmd =
1267                 ucode_capa.standard_phy_calibration_size + 1;
1268
1269         /* initialize all valid contexts */
1270         iwl_init_context(priv, ucode_capa.flags);
1271
1272         /**************************************************
1273          * This is still part of probe() in a sense...
1274          *
1275          * 9. Setup and register with mac80211 and debugfs
1276          **************************************************/
1277         err = iwl_mac_setup_register(priv, &ucode_capa);
1278         if (err)
1279                 goto out_unbind;
1280
1281         err = iwl_dbgfs_register(priv, DRV_NAME);
1282         if (err)
1283                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1284
1285         err = sysfs_create_group(&(priv->bus->dev->kobj),
1286                                         &iwl_attribute_group);
1287         if (err) {
1288                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1289                 goto out_unbind;
1290         }
1291
1292         /* We have our copies now, allow OS release its copies */
1293         release_firmware(ucode_raw);
1294         complete(&priv->firmware_loading_complete);
1295         return;
1296
1297  try_again:
1298         /* try next, if any */
1299         if (iwl_request_firmware(priv, false))
1300                 goto out_unbind;
1301         release_firmware(ucode_raw);
1302         return;
1303
1304  err_pci_alloc:
1305         IWL_ERR(priv, "failed to allocate pci memory\n");
1306         iwl_dealloc_ucode(priv);
1307  out_unbind:
1308         complete(&priv->firmware_loading_complete);
1309         device_release_driver(priv->bus->dev);
1310         release_firmware(ucode_raw);
1311 }
1312
1313 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1314 {
1315         struct iwl_ct_kill_config cmd;
1316         struct iwl_ct_kill_throttling_config adv_cmd;
1317         unsigned long flags;
1318         int ret = 0;
1319
1320         spin_lock_irqsave(&priv->shrd->lock, flags);
1321         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1322                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1323         spin_unlock_irqrestore(&priv->shrd->lock, flags);
1324         priv->thermal_throttle.ct_kill_toggle = false;
1325
1326         if (priv->cfg->base_params->support_ct_kill_exit) {
1327                 adv_cmd.critical_temperature_enter =
1328                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1329                 adv_cmd.critical_temperature_exit =
1330                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1331
1332                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1333                                        REPLY_CT_KILL_CONFIG_CMD,
1334                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1335                 if (ret)
1336                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1337                 else
1338                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1339                                 "succeeded, critical temperature enter is %d,"
1340                                 "exit is %d\n",
1341                                 hw_params(priv).ct_kill_threshold,
1342                                 hw_params(priv).ct_kill_exit_threshold);
1343         } else {
1344                 cmd.critical_temperature_R =
1345                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1346
1347                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1348                                        REPLY_CT_KILL_CONFIG_CMD,
1349                                        CMD_SYNC, sizeof(cmd), &cmd);
1350                 if (ret)
1351                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1352                 else
1353                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1354                                 "succeeded, "
1355                                 "critical temperature is %d\n",
1356                                 hw_params(priv).ct_kill_threshold);
1357         }
1358 }
1359
1360 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1361 {
1362         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1363         struct iwl_host_cmd cmd = {
1364                 .id = CALIBRATION_CFG_CMD,
1365                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1366                 .data = { &calib_cfg_cmd, },
1367         };
1368
1369         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1370         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1371         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1372
1373         return iwl_trans_send_cmd(trans(priv), &cmd);
1374 }
1375
1376
1377 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1378 {
1379         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1380           .valid = cpu_to_le32(valid_tx_ant),
1381         };
1382
1383         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1384                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1385                 return iwl_trans_send_cmd_pdu(trans(priv),
1386                                         TX_ANT_CONFIGURATION_CMD,
1387                                         CMD_SYNC,
1388                                         sizeof(struct iwl_tx_ant_config_cmd),
1389                                         &tx_ant_cmd);
1390         } else {
1391                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1392                 return -EOPNOTSUPP;
1393         }
1394 }
1395
1396 /**
1397  * iwl_alive_start - called after REPLY_ALIVE notification received
1398  *                   from protocol/runtime uCode (initialization uCode's
1399  *                   Alive gets handled by iwl_init_alive_start()).
1400  */
1401 int iwl_alive_start(struct iwl_priv *priv)
1402 {
1403         int ret = 0;
1404         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1405
1406         /*TODO: this should go to the transport layer */
1407         iwl_reset_ict(trans(priv));
1408
1409         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1410
1411         /* After the ALIVE response, we can send host commands to the uCode */
1412         set_bit(STATUS_ALIVE, &priv->shrd->status);
1413
1414         /* Enable watchdog to monitor the driver tx queues */
1415         iwl_setup_watchdog(priv);
1416
1417         if (iwl_is_rfkill(priv->shrd))
1418                 return -ERFKILL;
1419
1420         /* download priority table before any calibration request */
1421         if (priv->cfg->bt_params &&
1422             priv->cfg->bt_params->advanced_bt_coexist) {
1423                 /* Configure Bluetooth device coexistence support */
1424                 if (priv->cfg->bt_params->bt_sco_disable)
1425                         priv->bt_enable_pspoll = false;
1426                 else
1427                         priv->bt_enable_pspoll = true;
1428
1429                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1430                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1431                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1432                 iwlagn_send_advance_bt_config(priv);
1433                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1434                 priv->cur_rssi_ctx = NULL;
1435
1436                 iwlagn_send_prio_tbl(priv);
1437
1438                 /* FIXME: w/a to force change uCode BT state machine */
1439                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1440                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1441                 if (ret)
1442                         return ret;
1443                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1444                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1445                 if (ret)
1446                         return ret;
1447         } else {
1448                 /*
1449                  * default is 2-wire BT coexexistence support
1450                  */
1451                 iwl_send_bt_config(priv);
1452         }
1453
1454         if (hw_params(priv).calib_rt_cfg)
1455                 iwlagn_send_calib_cfg_rt(priv,
1456                                          hw_params(priv).calib_rt_cfg);
1457
1458         ieee80211_wake_queues(priv->hw);
1459
1460         priv->active_rate = IWL_RATES_MASK;
1461
1462         /* Configure Tx antenna selection based on H/W config */
1463         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1464
1465         if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1466                 struct iwl_rxon_cmd *active_rxon =
1467                                 (struct iwl_rxon_cmd *)&ctx->active;
1468                 /* apply any changes in staging */
1469                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1470                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1471         } else {
1472                 struct iwl_rxon_context *tmp;
1473                 /* Initialize our rx_config data */
1474                 for_each_context(priv, tmp)
1475                         iwl_connection_init_rx_config(priv, tmp);
1476
1477                 iwlagn_set_rxon_chain(priv, ctx);
1478         }
1479
1480         if (!priv->shrd->wowlan) {
1481                 /* WoWLAN ucode will not reply in the same way, skip it */
1482                 iwl_reset_run_time_calib(priv);
1483         }
1484
1485         set_bit(STATUS_READY, &priv->shrd->status);
1486
1487         /* Configure the adapter for unassociated operation */
1488         ret = iwlagn_commit_rxon(priv, ctx);
1489         if (ret)
1490                 return ret;
1491
1492         /* At this point, the NIC is initialized and operational */
1493         iwl_rf_kill_ct_config(priv);
1494
1495         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1496
1497         return iwl_power_update_mode(priv, true);
1498 }
1499
1500 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1501
1502 static void __iwl_down(struct iwl_priv *priv)
1503 {
1504         int exit_pending;
1505
1506         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1507
1508         iwl_scan_cancel_timeout(priv, 200);
1509
1510         /*
1511          * If active, scanning won't cancel it, so say it expired.
1512          * No race since we hold the mutex here and a new one
1513          * can't come in at this time.
1514          */
1515         ieee80211_remain_on_channel_expired(priv->hw);
1516
1517         exit_pending =
1518                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1519
1520         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1521          * to prevent rearm timer */
1522         del_timer_sync(&priv->watchdog);
1523
1524         iwl_clear_ucode_stations(priv, NULL);
1525         iwl_dealloc_bcast_stations(priv);
1526         iwl_clear_driver_stations(priv);
1527
1528         /* reset BT coex data */
1529         priv->bt_status = 0;
1530         priv->cur_rssi_ctx = NULL;
1531         priv->bt_is_sco = 0;
1532         if (priv->cfg->bt_params)
1533                 priv->bt_traffic_load =
1534                          priv->cfg->bt_params->bt_init_traffic_load;
1535         else
1536                 priv->bt_traffic_load = 0;
1537         priv->bt_full_concurrent = false;
1538         priv->bt_ci_compliance = 0;
1539
1540         /* Wipe out the EXIT_PENDING status bit if we are not actually
1541          * exiting the module */
1542         if (!exit_pending)
1543                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1544
1545         if (priv->mac80211_registered)
1546                 ieee80211_stop_queues(priv->hw);
1547
1548         /* Clear out all status bits but a few that are stable across reset */
1549         priv->shrd->status &=
1550                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1551                                 STATUS_RF_KILL_HW |
1552                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1553                                 STATUS_GEO_CONFIGURED |
1554                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1555                                 STATUS_FW_ERROR |
1556                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1557                                 STATUS_EXIT_PENDING;
1558
1559         iwl_trans_stop_device(trans(priv));
1560
1561         dev_kfree_skb(priv->beacon_skb);
1562         priv->beacon_skb = NULL;
1563 }
1564
1565 static void iwl_down(struct iwl_priv *priv)
1566 {
1567         mutex_lock(&priv->shrd->mutex);
1568         __iwl_down(priv);
1569         mutex_unlock(&priv->shrd->mutex);
1570
1571         iwl_cancel_deferred_work(priv);
1572 }
1573
1574 #define MAX_HW_RESTARTS 5
1575
1576 static int __iwl_up(struct iwl_priv *priv)
1577 {
1578         struct iwl_rxon_context *ctx;
1579         int ret;
1580
1581         lockdep_assert_held(&priv->shrd->mutex);
1582
1583         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1584                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1585                 return -EIO;
1586         }
1587
1588         for_each_context(priv, ctx) {
1589                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1590                 if (ret) {
1591                         iwl_dealloc_bcast_stations(priv);
1592                         return ret;
1593                 }
1594         }
1595
1596         ret = iwlagn_run_init_ucode(priv);
1597         if (ret) {
1598                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1599                 goto error;
1600         }
1601
1602         ret = iwlagn_load_ucode_wait_alive(priv,
1603                                            &priv->ucode_rt,
1604                                            IWL_UCODE_REGULAR);
1605         if (ret) {
1606                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1607                 goto error;
1608         }
1609
1610         ret = iwl_alive_start(priv);
1611         if (ret)
1612                 goto error;
1613         return 0;
1614
1615  error:
1616         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1617         __iwl_down(priv);
1618         clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1619
1620         IWL_ERR(priv, "Unable to initialize device.\n");
1621         return ret;
1622 }
1623
1624
1625 /*****************************************************************************
1626  *
1627  * Workqueue callbacks
1628  *
1629  *****************************************************************************/
1630
1631 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1632 {
1633         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1634                         run_time_calib_work);
1635
1636         mutex_lock(&priv->shrd->mutex);
1637
1638         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1639             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1640                 mutex_unlock(&priv->shrd->mutex);
1641                 return;
1642         }
1643
1644         if (priv->start_calib) {
1645                 iwl_chain_noise_calibration(priv);
1646                 iwl_sensitivity_calibration(priv);
1647         }
1648
1649         mutex_unlock(&priv->shrd->mutex);
1650 }
1651
1652 static void iwlagn_prepare_restart(struct iwl_priv *priv)
1653 {
1654         struct iwl_rxon_context *ctx;
1655         bool bt_full_concurrent;
1656         u8 bt_ci_compliance;
1657         u8 bt_load;
1658         u8 bt_status;
1659         bool bt_is_sco;
1660
1661         lockdep_assert_held(&priv->shrd->mutex);
1662
1663         for_each_context(priv, ctx)
1664                 ctx->vif = NULL;
1665         priv->is_open = 0;
1666
1667         /*
1668          * __iwl_down() will clear the BT status variables,
1669          * which is correct, but when we restart we really
1670          * want to keep them so restore them afterwards.
1671          *
1672          * The restart process will later pick them up and
1673          * re-configure the hw when we reconfigure the BT
1674          * command.
1675          */
1676         bt_full_concurrent = priv->bt_full_concurrent;
1677         bt_ci_compliance = priv->bt_ci_compliance;
1678         bt_load = priv->bt_traffic_load;
1679         bt_status = priv->bt_status;
1680         bt_is_sco = priv->bt_is_sco;
1681
1682         __iwl_down(priv);
1683
1684         priv->bt_full_concurrent = bt_full_concurrent;
1685         priv->bt_ci_compliance = bt_ci_compliance;
1686         priv->bt_traffic_load = bt_load;
1687         priv->bt_status = bt_status;
1688         priv->bt_is_sco = bt_is_sco;
1689 }
1690
1691 static void iwl_bg_restart(struct work_struct *data)
1692 {
1693         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1694
1695         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1696                 return;
1697
1698         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1699                 mutex_lock(&priv->shrd->mutex);
1700                 iwlagn_prepare_restart(priv);
1701                 mutex_unlock(&priv->shrd->mutex);
1702                 iwl_cancel_deferred_work(priv);
1703                 ieee80211_restart_hw(priv->hw);
1704         } else {
1705                 WARN_ON(1);
1706         }
1707 }
1708
1709 /*****************************************************************************
1710  *
1711  * mac80211 entry point functions
1712  *
1713  *****************************************************************************/
1714
1715 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
1716         {
1717                 .max = 1,
1718                 .types = BIT(NL80211_IFTYPE_STATION),
1719         },
1720         {
1721                 .max = 1,
1722                 .types = BIT(NL80211_IFTYPE_AP),
1723         },
1724 };
1725
1726 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
1727         {
1728                 .max = 2,
1729                 .types = BIT(NL80211_IFTYPE_STATION),
1730         },
1731 };
1732
1733 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
1734         {
1735                 .max = 1,
1736                 .types = BIT(NL80211_IFTYPE_STATION),
1737         },
1738         {
1739                 .max = 1,
1740                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
1741                          BIT(NL80211_IFTYPE_AP),
1742         },
1743 };
1744
1745 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
1746         {
1747                 .max = 2,
1748                 .types = BIT(NL80211_IFTYPE_STATION),
1749         },
1750         {
1751                 .max = 1,
1752                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
1753         },
1754 };
1755
1756 static const struct ieee80211_iface_combination
1757 iwlagn_iface_combinations_dualmode[] = {
1758         { .num_different_channels = 1,
1759           .max_interfaces = 2,
1760           .beacon_int_infra_match = true,
1761           .limits = iwlagn_sta_ap_limits,
1762           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
1763         },
1764         { .num_different_channels = 1,
1765           .max_interfaces = 2,
1766           .limits = iwlagn_2sta_limits,
1767           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
1768         },
1769 };
1770
1771 static const struct ieee80211_iface_combination
1772 iwlagn_iface_combinations_p2p[] = {
1773         { .num_different_channels = 1,
1774           .max_interfaces = 2,
1775           .beacon_int_infra_match = true,
1776           .limits = iwlagn_p2p_sta_go_limits,
1777           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
1778         },
1779         { .num_different_channels = 1,
1780           .max_interfaces = 2,
1781           .limits = iwlagn_p2p_2sta_limits,
1782           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
1783         },
1784 };
1785
1786 /*
1787  * Not a mac80211 entry point function, but it fits in with all the
1788  * other mac80211 functions grouped here.
1789  */
1790 static int iwl_mac_setup_register(struct iwl_priv *priv,
1791                                   struct iwlagn_ucode_capabilities *capa)
1792 {
1793         int ret;
1794         struct ieee80211_hw *hw = priv->hw;
1795         struct iwl_rxon_context *ctx;
1796
1797         hw->rate_control_algorithm = "iwl-agn-rs";
1798
1799         /* Tell mac80211 our characteristics */
1800         hw->flags = IEEE80211_HW_SIGNAL_DBM |
1801                     IEEE80211_HW_AMPDU_AGGREGATION |
1802                     IEEE80211_HW_NEED_DTIM_PERIOD |
1803                     IEEE80211_HW_SPECTRUM_MGMT |
1804                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
1805
1806         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
1807
1808         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
1809                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
1810
1811         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
1812                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
1813                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
1814
1815         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
1816                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
1817
1818         hw->sta_data_size = sizeof(struct iwl_station_priv);
1819         hw->vif_data_size = sizeof(struct iwl_vif_priv);
1820
1821         for_each_context(priv, ctx) {
1822                 hw->wiphy->interface_modes |= ctx->interface_modes;
1823                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
1824         }
1825
1826         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
1827
1828         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
1829                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
1830                 hw->wiphy->n_iface_combinations =
1831                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
1832         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
1833                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
1834                 hw->wiphy->n_iface_combinations =
1835                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
1836         }
1837
1838         hw->wiphy->max_remain_on_channel_duration = 1000;
1839
1840         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
1841                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
1842                             WIPHY_FLAG_IBSS_RSN;
1843
1844         if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
1845                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
1846                                           WIPHY_WOWLAN_DISCONNECT |
1847                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
1848                                           WIPHY_WOWLAN_RFKILL_RELEASE;
1849                 if (!iwlagn_mod_params.sw_crypto)
1850                         hw->wiphy->wowlan.flags |=
1851                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
1852                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
1853
1854                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
1855                 hw->wiphy->wowlan.pattern_min_len =
1856                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
1857                 hw->wiphy->wowlan.pattern_max_len =
1858                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
1859         }
1860
1861         if (iwlagn_mod_params.power_save)
1862                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
1863         else
1864                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
1865
1866         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
1867         /* we create the 802.11 header and a zero-length SSID element */
1868         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
1869
1870         /* Default value; 4 EDCA QOS priorities */
1871         hw->queues = 4;
1872
1873         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
1874
1875         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
1876                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
1877                         &priv->bands[IEEE80211_BAND_2GHZ];
1878         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
1879                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
1880                         &priv->bands[IEEE80211_BAND_5GHZ];
1881
1882         iwl_leds_init(priv);
1883
1884         ret = ieee80211_register_hw(priv->hw);
1885         if (ret) {
1886                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
1887                 return ret;
1888         }
1889         priv->mac80211_registered = 1;
1890
1891         return 0;
1892 }
1893
1894
1895 static int iwlagn_mac_start(struct ieee80211_hw *hw)
1896 {
1897         struct iwl_priv *priv = hw->priv;
1898         int ret;
1899
1900         IWL_DEBUG_MAC80211(priv, "enter\n");
1901
1902         /* we should be verifying the device is ready to be opened */
1903         mutex_lock(&priv->shrd->mutex);
1904         ret = __iwl_up(priv);
1905         mutex_unlock(&priv->shrd->mutex);
1906         if (ret)
1907                 return ret;
1908
1909         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
1910
1911         /* Now we should be done, and the READY bit should be set. */
1912         if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
1913                 ret = -EIO;
1914
1915         iwlagn_led_enable(priv);
1916
1917         priv->is_open = 1;
1918         IWL_DEBUG_MAC80211(priv, "leave\n");
1919         return 0;
1920 }
1921
1922 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
1923 {
1924         struct iwl_priv *priv = hw->priv;
1925
1926         IWL_DEBUG_MAC80211(priv, "enter\n");
1927
1928         if (!priv->is_open)
1929                 return;
1930
1931         priv->is_open = 0;
1932
1933         iwl_down(priv);
1934
1935         flush_workqueue(priv->shrd->workqueue);
1936
1937         /* User space software may expect getting rfkill changes
1938          * even if interface is down */
1939         iwl_write32(bus(priv), CSR_INT, 0xFFFFFFFF);
1940         iwl_enable_rfkill_int(priv);
1941
1942         IWL_DEBUG_MAC80211(priv, "leave\n");
1943 }
1944
1945 #ifdef CONFIG_PM
1946 static int iwlagn_send_patterns(struct iwl_priv *priv,
1947                                 struct cfg80211_wowlan *wowlan)
1948 {
1949         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
1950         struct iwl_host_cmd cmd = {
1951                 .id = REPLY_WOWLAN_PATTERNS,
1952                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1953                 .flags = CMD_SYNC,
1954         };
1955         int i, err;
1956
1957         if (!wowlan->n_patterns)
1958                 return 0;
1959
1960         cmd.len[0] = sizeof(*pattern_cmd) +
1961                         wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
1962
1963         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
1964         if (!pattern_cmd)
1965                 return -ENOMEM;
1966
1967         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
1968
1969         for (i = 0; i < wowlan->n_patterns; i++) {
1970                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
1971
1972                 memcpy(&pattern_cmd->patterns[i].mask,
1973                         wowlan->patterns[i].mask, mask_len);
1974                 memcpy(&pattern_cmd->patterns[i].pattern,
1975                         wowlan->patterns[i].pattern,
1976                         wowlan->patterns[i].pattern_len);
1977                 pattern_cmd->patterns[i].mask_size = mask_len;
1978                 pattern_cmd->patterns[i].pattern_size =
1979                         wowlan->patterns[i].pattern_len;
1980         }
1981
1982         cmd.data[0] = pattern_cmd;
1983         err = iwl_trans_send_cmd(trans(priv), &cmd);
1984         kfree(pattern_cmd);
1985         return err;
1986 }
1987 #endif
1988
1989 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
1990                                       struct ieee80211_vif *vif,
1991                                       struct cfg80211_gtk_rekey_data *data)
1992 {
1993         struct iwl_priv *priv = hw->priv;
1994
1995         if (iwlagn_mod_params.sw_crypto)
1996                 return;
1997
1998         mutex_lock(&priv->shrd->mutex);
1999
2000         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2001                 goto out;
2002
2003         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2004         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2005         priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2006         priv->have_rekey_data = true;
2007
2008  out:
2009         mutex_unlock(&priv->shrd->mutex);
2010 }
2011
2012 struct wowlan_key_data {
2013         struct iwl_rxon_context *ctx;
2014         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2015         struct iwlagn_wowlan_tkip_params_cmd *tkip;
2016         const u8 *bssid;
2017         bool error, use_rsc_tsc, use_tkip;
2018 };
2019
2020 #ifdef CONFIG_PM
2021 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2022 {
2023         int i;
2024
2025         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2026                 out[i] = cpu_to_le16(p1k[i]);
2027 }
2028
2029 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2030                                        struct ieee80211_vif *vif,
2031                                        struct ieee80211_sta *sta,
2032                                        struct ieee80211_key_conf *key,
2033                                        void *_data)
2034 {
2035         struct iwl_priv *priv = hw->priv;
2036         struct wowlan_key_data *data = _data;
2037         struct iwl_rxon_context *ctx = data->ctx;
2038         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2039         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2040         struct iwlagn_p1k_cache *rx_p1ks;
2041         u8 *rx_mic_key;
2042         struct ieee80211_key_seq seq;
2043         u32 cur_rx_iv32 = 0;
2044         u16 p1k[IWLAGN_P1K_SIZE];
2045         int ret, i;
2046
2047         mutex_lock(&priv->shrd->mutex);
2048
2049         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2050              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2051              !sta && !ctx->key_mapping_keys)
2052                 ret = iwl_set_default_wep_key(priv, ctx, key);
2053         else
2054                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2055
2056         if (ret) {
2057                 IWL_ERR(priv, "Error setting key during suspend!\n");
2058                 data->error = true;
2059         }
2060
2061         switch (key->cipher) {
2062         case WLAN_CIPHER_SUITE_TKIP:
2063                 if (sta) {
2064                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2065                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2066
2067                         rx_p1ks = data->tkip->rx_uni;
2068
2069                         ieee80211_get_key_tx_seq(key, &seq);
2070                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2071                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2072
2073                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2074                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2075
2076                         memcpy(data->tkip->mic_keys.tx,
2077                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2078                                IWLAGN_MIC_KEY_SIZE);
2079
2080                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
2081                 } else {
2082                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2083                         rx_p1ks = data->tkip->rx_multi;
2084                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
2085                 }
2086
2087                 /*
2088                  * For non-QoS this relies on the fact that both the uCode and
2089                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
2090                  * for checking the IV in the frames.
2091                  */
2092                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2093                         ieee80211_get_key_rx_seq(key, i, &seq);
2094                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2095                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2096                         /* wrapping isn't allowed, AP must rekey */
2097                         if (seq.tkip.iv32 > cur_rx_iv32)
2098                                 cur_rx_iv32 = seq.tkip.iv32;
2099                 }
2100
2101                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2102                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2103                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2104                                           cur_rx_iv32 + 1, p1k);
2105                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2106
2107                 memcpy(rx_mic_key,
2108                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2109                        IWLAGN_MIC_KEY_SIZE);
2110
2111                 data->use_tkip = true;
2112                 data->use_rsc_tsc = true;
2113                 break;
2114         case WLAN_CIPHER_SUITE_CCMP:
2115                 if (sta) {
2116                         u8 *pn = seq.ccmp.pn;
2117
2118                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2119                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2120
2121                         ieee80211_get_key_tx_seq(key, &seq);
2122                         aes_tx_sc->pn = cpu_to_le64(
2123                                         (u64)pn[5] |
2124                                         ((u64)pn[4] << 8) |
2125                                         ((u64)pn[3] << 16) |
2126                                         ((u64)pn[2] << 24) |
2127                                         ((u64)pn[1] << 32) |
2128                                         ((u64)pn[0] << 40));
2129                 } else
2130                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2131
2132                 /*
2133                  * For non-QoS this relies on the fact that both the uCode and
2134                  * mac80211 use TID 0 for checking the IV in the frames.
2135                  */
2136                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2137                         u8 *pn = seq.ccmp.pn;
2138
2139                         ieee80211_get_key_rx_seq(key, i, &seq);
2140                         aes_sc->pn = cpu_to_le64(
2141                                         (u64)pn[5] |
2142                                         ((u64)pn[4] << 8) |
2143                                         ((u64)pn[3] << 16) |
2144                                         ((u64)pn[2] << 24) |
2145                                         ((u64)pn[1] << 32) |
2146                                         ((u64)pn[0] << 40));
2147                 }
2148                 data->use_rsc_tsc = true;
2149                 break;
2150         }
2151
2152         mutex_unlock(&priv->shrd->mutex);
2153 }
2154
2155 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2156                               struct cfg80211_wowlan *wowlan)
2157 {
2158         struct iwl_priv *priv = hw->priv;
2159         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2160         struct iwl_rxon_cmd rxon;
2161         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2162         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2163         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2164         struct wowlan_key_data key_data = {
2165                 .ctx = ctx,
2166                 .bssid = ctx->active.bssid_addr,
2167                 .use_rsc_tsc = false,
2168                 .tkip = &tkip_cmd,
2169                 .use_tkip = false,
2170         };
2171         int ret, i;
2172         u16 seq;
2173
2174         if (WARN_ON(!wowlan))
2175                 return -EINVAL;
2176
2177         mutex_lock(&priv->shrd->mutex);
2178
2179         /* Don't attempt WoWLAN when not associated, tear down instead. */
2180         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2181             !iwl_is_associated_ctx(ctx)) {
2182                 ret = 1;
2183                 goto out;
2184         }
2185
2186         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2187         if (!key_data.rsc_tsc) {
2188                 ret = -ENOMEM;
2189                 goto out;
2190         }
2191
2192         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2193
2194         /*
2195          * We know the last used seqno, and the uCode expects to know that
2196          * one, it will increment before TX.
2197          */
2198         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2199         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2200
2201         /*
2202          * For QoS counters, we store the one to use next, so subtract 0x10
2203          * since the uCode will add 0x10 before using the value.
2204          */
2205         for (i = 0; i < 8; i++) {
2206                 seq = priv->shrd->tid_data[IWL_AP_ID][i].seq_number;
2207                 seq -= 0x10;
2208                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2209         }
2210
2211         if (wowlan->disconnect)
2212                 wakeup_filter_cmd.enabled |=
2213                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2214                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2215         if (wowlan->magic_pkt)
2216                 wakeup_filter_cmd.enabled |=
2217                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2218         if (wowlan->gtk_rekey_failure)
2219                 wakeup_filter_cmd.enabled |=
2220                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2221         if (wowlan->eap_identity_req)
2222                 wakeup_filter_cmd.enabled |=
2223                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2224         if (wowlan->four_way_handshake)
2225                 wakeup_filter_cmd.enabled |=
2226                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2227         if (wowlan->rfkill_release)
2228                 wakeup_filter_cmd.enabled |=
2229                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2230         if (wowlan->n_patterns)
2231                 wakeup_filter_cmd.enabled |=
2232                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2233
2234         iwl_scan_cancel_timeout(priv, 200);
2235
2236         memcpy(&rxon, &ctx->active, sizeof(rxon));
2237
2238         iwl_trans_stop_device(trans(priv));
2239
2240         priv->shrd->wowlan = true;
2241
2242         ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2243                                            IWL_UCODE_WOWLAN);
2244         if (ret)
2245                 goto error;
2246
2247         /* now configure WoWLAN ucode */
2248         ret = iwl_alive_start(priv);
2249         if (ret)
2250                 goto error;
2251
2252         memcpy(&ctx->staging, &rxon, sizeof(rxon));
2253         ret = iwlagn_commit_rxon(priv, ctx);
2254         if (ret)
2255                 goto error;
2256
2257         ret = iwl_power_update_mode(priv, true);
2258         if (ret)
2259                 goto error;
2260
2261         if (!iwlagn_mod_params.sw_crypto) {
2262                 /* mark all keys clear */
2263                 priv->ucode_key_table = 0;
2264                 ctx->key_mapping_keys = 0;
2265
2266                 /*
2267                  * This needs to be unlocked due to lock ordering
2268                  * constraints. Since we're in the suspend path
2269                  * that isn't really a problem though.
2270                  */
2271                 mutex_unlock(&priv->shrd->mutex);
2272                 ieee80211_iter_keys(priv->hw, ctx->vif,
2273                                     iwlagn_wowlan_program_keys,
2274                                     &key_data);
2275                 mutex_lock(&priv->shrd->mutex);
2276                 if (key_data.error) {
2277                         ret = -EIO;
2278                         goto error;
2279                 }
2280
2281                 if (key_data.use_rsc_tsc) {
2282                         struct iwl_host_cmd rsc_tsc_cmd = {
2283                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2284                                 .flags = CMD_SYNC,
2285                                 .data[0] = key_data.rsc_tsc,
2286                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2287                                 .len[0] = sizeof(*key_data.rsc_tsc),
2288                         };
2289
2290                         ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2291                         if (ret)
2292                                 goto error;
2293                 }
2294
2295                 if (key_data.use_tkip) {
2296                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2297                                                  REPLY_WOWLAN_TKIP_PARAMS,
2298                                                  CMD_SYNC, sizeof(tkip_cmd),
2299                                                  &tkip_cmd);
2300                         if (ret)
2301                                 goto error;
2302                 }
2303
2304                 if (priv->have_rekey_data) {
2305                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2306                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2307                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2308                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2309                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2310                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
2311
2312                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2313                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
2314                                                  CMD_SYNC, sizeof(kek_kck_cmd),
2315                                                  &kek_kck_cmd);
2316                         if (ret)
2317                                 goto error;
2318                 }
2319         }
2320
2321         ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2322                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
2323                                  &wakeup_filter_cmd);
2324         if (ret)
2325                 goto error;
2326
2327         ret = iwlagn_send_patterns(priv, wowlan);
2328         if (ret)
2329                 goto error;
2330
2331         device_set_wakeup_enable(priv->bus->dev, true);
2332
2333         /* Now let the ucode operate on its own */
2334         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_SET,
2335                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2336
2337         goto out;
2338
2339  error:
2340         priv->shrd->wowlan = false;
2341         iwlagn_prepare_restart(priv);
2342         ieee80211_restart_hw(priv->hw);
2343  out:
2344         mutex_unlock(&priv->shrd->mutex);
2345         kfree(key_data.rsc_tsc);
2346         return ret;
2347 }
2348
2349 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2350 {
2351         struct iwl_priv *priv = hw->priv;
2352         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2353         struct ieee80211_vif *vif;
2354         unsigned long flags;
2355         u32 base, status = 0xffffffff;
2356         int ret = -EIO;
2357
2358         mutex_lock(&priv->shrd->mutex);
2359
2360         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
2361                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2362
2363         base = priv->device_pointers.error_event_table;
2364         if (iwlagn_hw_valid_rtc_data_addr(base)) {
2365                 spin_lock_irqsave(&bus(priv)->reg_lock, flags);
2366                 ret = iwl_grab_nic_access_silent(bus(priv));
2367                 if (ret == 0) {
2368                         iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, base);
2369                         status = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
2370                         iwl_release_nic_access(bus(priv));
2371                 }
2372                 spin_unlock_irqrestore(&bus(priv)->reg_lock, flags);
2373
2374 #ifdef CONFIG_IWLWIFI_DEBUGFS
2375                 if (ret == 0) {
2376                         if (!priv->wowlan_sram)
2377                                 priv->wowlan_sram =
2378                                         kzalloc(priv->ucode_wowlan.data.len,
2379                                                 GFP_KERNEL);
2380
2381                         if (priv->wowlan_sram)
2382                                 _iwl_read_targ_mem_words(
2383                                         bus(priv), 0x800000, priv->wowlan_sram,
2384                                         priv->ucode_wowlan.data.len / 4);
2385                 }
2386 #endif
2387         }
2388
2389         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2390         vif = ctx->vif;
2391
2392         priv->shrd->wowlan = false;
2393
2394         device_set_wakeup_enable(priv->bus->dev, false);
2395
2396         iwlagn_prepare_restart(priv);
2397
2398         memset((void *)&ctx->active, 0, sizeof(ctx->active));
2399         iwl_connection_init_rx_config(priv, ctx);
2400         iwlagn_set_rxon_chain(priv, ctx);
2401
2402         mutex_unlock(&priv->shrd->mutex);
2403
2404         ieee80211_resume_disconnect(vif);
2405
2406         return 1;
2407 }
2408 #endif
2409
2410 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2411 {
2412         struct iwl_priv *priv = hw->priv;
2413
2414         IWL_DEBUG_MACDUMP(priv, "enter\n");
2415
2416         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2417                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2418
2419         if (iwlagn_tx_skb(priv, skb))
2420                 dev_kfree_skb_any(skb);
2421
2422         IWL_DEBUG_MACDUMP(priv, "leave\n");
2423 }
2424
2425 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2426                                        struct ieee80211_vif *vif,
2427                                        struct ieee80211_key_conf *keyconf,
2428                                        struct ieee80211_sta *sta,
2429                                        u32 iv32, u16 *phase1key)
2430 {
2431         struct iwl_priv *priv = hw->priv;
2432
2433         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2434 }
2435
2436 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2437                               struct ieee80211_vif *vif,
2438                               struct ieee80211_sta *sta,
2439                               struct ieee80211_key_conf *key)
2440 {
2441         struct iwl_priv *priv = hw->priv;
2442         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2443         struct iwl_rxon_context *ctx = vif_priv->ctx;
2444         int ret;
2445         bool is_default_wep_key = false;
2446
2447         IWL_DEBUG_MAC80211(priv, "enter\n");
2448
2449         if (iwlagn_mod_params.sw_crypto) {
2450                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2451                 return -EOPNOTSUPP;
2452         }
2453
2454         /*
2455          * We could program these keys into the hardware as well, but we
2456          * don't expect much multicast traffic in IBSS and having keys
2457          * for more stations is probably more useful.
2458          *
2459          * Mark key TX-only and return 0.
2460          */
2461         if (vif->type == NL80211_IFTYPE_ADHOC &&
2462             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2463                 key->hw_key_idx = WEP_INVALID_OFFSET;
2464                 return 0;
2465         }
2466
2467         /* If they key was TX-only, accept deletion */
2468         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2469                 return 0;
2470
2471         mutex_lock(&priv->shrd->mutex);
2472         iwl_scan_cancel_timeout(priv, 100);
2473
2474         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2475
2476         /*
2477          * If we are getting WEP group key and we didn't receive any key mapping
2478          * so far, we are in legacy wep mode (group key only), otherwise we are
2479          * in 1X mode.
2480          * In legacy wep mode, we use another host command to the uCode.
2481          */
2482         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2483              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2484                 if (cmd == SET_KEY)
2485                         is_default_wep_key = !ctx->key_mapping_keys;
2486                 else
2487                         is_default_wep_key =
2488                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2489         }
2490
2491
2492         switch (cmd) {
2493         case SET_KEY:
2494                 if (is_default_wep_key) {
2495                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2496                         break;
2497                 }
2498                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2499                 if (ret) {
2500                         /*
2501                          * can't add key for RX, but we don't need it
2502                          * in the device for TX so still return 0
2503                          */
2504                         ret = 0;
2505                         key->hw_key_idx = WEP_INVALID_OFFSET;
2506                 }
2507
2508                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2509                 break;
2510         case DISABLE_KEY:
2511                 if (is_default_wep_key)
2512                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2513                 else
2514                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2515
2516                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2517                 break;
2518         default:
2519                 ret = -EINVAL;
2520         }
2521
2522         mutex_unlock(&priv->shrd->mutex);
2523         IWL_DEBUG_MAC80211(priv, "leave\n");
2524
2525         return ret;
2526 }
2527
2528 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2529                                    struct ieee80211_vif *vif,
2530                                    enum ieee80211_ampdu_mlme_action action,
2531                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2532                                    u8 buf_size)
2533 {
2534         struct iwl_priv *priv = hw->priv;
2535         int ret = -EINVAL;
2536         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2537
2538         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2539                      sta->addr, tid);
2540
2541         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2542                 return -EACCES;
2543
2544         mutex_lock(&priv->shrd->mutex);
2545
2546         switch (action) {
2547         case IEEE80211_AMPDU_RX_START:
2548                 IWL_DEBUG_HT(priv, "start Rx\n");
2549                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2550                 break;
2551         case IEEE80211_AMPDU_RX_STOP:
2552                 IWL_DEBUG_HT(priv, "stop Rx\n");
2553                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2554                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2555                         ret = 0;
2556                 break;
2557         case IEEE80211_AMPDU_TX_START:
2558                 IWL_DEBUG_HT(priv, "start Tx\n");
2559                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2560                 if (ret == 0) {
2561                         priv->agg_tids_count++;
2562                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2563                                      priv->agg_tids_count);
2564                 }
2565                 break;
2566         case IEEE80211_AMPDU_TX_STOP:
2567                 IWL_DEBUG_HT(priv, "stop Tx\n");
2568                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2569                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2570                         priv->agg_tids_count--;
2571                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2572                                      priv->agg_tids_count);
2573                 }
2574                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2575                         ret = 0;
2576                 if (priv->cfg->ht_params &&
2577                     priv->cfg->ht_params->use_rts_for_aggregation) {
2578                         /*
2579                          * switch off RTS/CTS if it was previously enabled
2580                          */
2581                         sta_priv->lq_sta.lq.general_params.flags &=
2582                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2583                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2584                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2585                 }
2586                 break;
2587         case IEEE80211_AMPDU_TX_OPERATIONAL:
2588                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2589
2590                 iwl_trans_txq_agg_setup(trans(priv), iwl_sta_id(sta), tid,
2591                                 buf_size);
2592
2593                 /*
2594                  * If the limit is 0, then it wasn't initialised yet,
2595                  * use the default. We can do that since we take the
2596                  * minimum below, and we don't want to go above our
2597                  * default due to hardware restrictions.
2598                  */
2599                 if (sta_priv->max_agg_bufsize == 0)
2600                         sta_priv->max_agg_bufsize =
2601                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2602
2603                 /*
2604                  * Even though in theory the peer could have different
2605                  * aggregation reorder buffer sizes for different sessions,
2606                  * our ucode doesn't allow for that and has a global limit
2607                  * for each station. Therefore, use the minimum of all the
2608                  * aggregation sessions and our default value.
2609                  */
2610                 sta_priv->max_agg_bufsize =
2611                         min(sta_priv->max_agg_bufsize, buf_size);
2612
2613                 if (priv->cfg->ht_params &&
2614                     priv->cfg->ht_params->use_rts_for_aggregation) {
2615                         /*
2616                          * switch to RTS/CTS if it is the prefer protection
2617                          * method for HT traffic
2618                          */
2619
2620                         sta_priv->lq_sta.lq.general_params.flags |=
2621                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2622                 }
2623
2624                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2625                         sta_priv->max_agg_bufsize;
2626
2627                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2628                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2629
2630                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2631                          sta->addr, tid);
2632                 ret = 0;
2633                 break;
2634         }
2635         mutex_unlock(&priv->shrd->mutex);
2636
2637         return ret;
2638 }
2639
2640 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2641                               struct ieee80211_vif *vif,
2642                               struct ieee80211_sta *sta)
2643 {
2644         struct iwl_priv *priv = hw->priv;
2645         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2646         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2647         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2648         int ret;
2649         u8 sta_id;
2650
2651         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2652                         sta->addr);
2653         mutex_lock(&priv->shrd->mutex);
2654         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2655                         sta->addr);
2656         sta_priv->common.sta_id = IWL_INVALID_STATION;
2657
2658         atomic_set(&sta_priv->pending_frames, 0);
2659         if (vif->type == NL80211_IFTYPE_AP)
2660                 sta_priv->client = true;
2661
2662         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2663                                      is_ap, sta, &sta_id);
2664         if (ret) {
2665                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2666                         sta->addr, ret);
2667                 /* Should we return success if return code is EEXIST ? */
2668                 mutex_unlock(&priv->shrd->mutex);
2669                 return ret;
2670         }
2671
2672         sta_priv->common.sta_id = sta_id;
2673
2674         /* Initialize rate scaling */
2675         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2676                        sta->addr);
2677         iwl_rs_rate_init(priv, sta, sta_id);
2678         mutex_unlock(&priv->shrd->mutex);
2679
2680         return 0;
2681 }
2682
2683 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2684                                 struct ieee80211_channel_switch *ch_switch)
2685 {
2686         struct iwl_priv *priv = hw->priv;
2687         const struct iwl_channel_info *ch_info;
2688         struct ieee80211_conf *conf = &hw->conf;
2689         struct ieee80211_channel *channel = ch_switch->channel;
2690         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2691         /*
2692          * MULTI-FIXME
2693          * When we add support for multiple interfaces, we need to
2694          * revisit this. The channel switch command in the device
2695          * only affects the BSS context, but what does that really
2696          * mean? And what if we get a CSA on the second interface?
2697          * This needs a lot of work.
2698          */
2699         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2700         u16 ch;
2701
2702         IWL_DEBUG_MAC80211(priv, "enter\n");
2703
2704         mutex_lock(&priv->shrd->mutex);
2705
2706         if (iwl_is_rfkill(priv->shrd))
2707                 goto out;
2708
2709         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
2710             test_bit(STATUS_SCANNING, &priv->shrd->status) ||
2711             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
2712                 goto out;
2713
2714         if (!iwl_is_associated_ctx(ctx))
2715                 goto out;
2716
2717         if (!priv->cfg->lib->set_channel_switch)
2718                 goto out;
2719
2720         ch = channel->hw_value;
2721         if (le16_to_cpu(ctx->active.channel) == ch)
2722                 goto out;
2723
2724         ch_info = iwl_get_channel_info(priv, channel->band, ch);
2725         if (!is_channel_valid(ch_info)) {
2726                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2727                 goto out;
2728         }
2729
2730         spin_lock_irq(&priv->shrd->lock);
2731
2732         priv->current_ht_config.smps = conf->smps_mode;
2733
2734         /* Configure HT40 channels */
2735         ctx->ht.enabled = conf_is_ht(conf);
2736         if (ctx->ht.enabled) {
2737                 if (conf_is_ht40_minus(conf)) {
2738                         ctx->ht.extension_chan_offset =
2739                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2740                         ctx->ht.is_40mhz = true;
2741                 } else if (conf_is_ht40_plus(conf)) {
2742                         ctx->ht.extension_chan_offset =
2743                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2744                         ctx->ht.is_40mhz = true;
2745                 } else {
2746                         ctx->ht.extension_chan_offset =
2747                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2748                         ctx->ht.is_40mhz = false;
2749                 }
2750         } else
2751                 ctx->ht.is_40mhz = false;
2752
2753         if ((le16_to_cpu(ctx->staging.channel) != ch))
2754                 ctx->staging.flags = 0;
2755
2756         iwl_set_rxon_channel(priv, channel, ctx);
2757         iwl_set_rxon_ht(priv, ht_conf);
2758         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2759
2760         spin_unlock_irq(&priv->shrd->lock);
2761
2762         iwl_set_rate(priv);
2763         /*
2764          * at this point, staging_rxon has the
2765          * configuration for channel switch
2766          */
2767         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2768         priv->switch_channel = cpu_to_le16(ch);
2769         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2770                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
2771                 priv->switch_channel = 0;
2772                 ieee80211_chswitch_done(ctx->vif, false);
2773         }
2774
2775 out:
2776         mutex_unlock(&priv->shrd->mutex);
2777         IWL_DEBUG_MAC80211(priv, "leave\n");
2778 }
2779
2780 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2781                                     unsigned int changed_flags,
2782                                     unsigned int *total_flags,
2783                                     u64 multicast)
2784 {
2785         struct iwl_priv *priv = hw->priv;
2786         __le32 filter_or = 0, filter_nand = 0;
2787         struct iwl_rxon_context *ctx;
2788
2789 #define CHK(test, flag) do { \
2790         if (*total_flags & (test))              \
2791                 filter_or |= (flag);            \
2792         else                                    \
2793                 filter_nand |= (flag);          \
2794         } while (0)
2795
2796         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
2797                         changed_flags, *total_flags);
2798
2799         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
2800         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
2801         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
2802         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
2803
2804 #undef CHK
2805
2806         mutex_lock(&priv->shrd->mutex);
2807
2808         for_each_context(priv, ctx) {
2809                 ctx->staging.filter_flags &= ~filter_nand;
2810                 ctx->staging.filter_flags |= filter_or;
2811
2812                 /*
2813                  * Not committing directly because hardware can perform a scan,
2814                  * but we'll eventually commit the filter flags change anyway.
2815                  */
2816         }
2817
2818         mutex_unlock(&priv->shrd->mutex);
2819
2820         /*
2821          * Receiving all multicast frames is always enabled by the
2822          * default flags setup in iwl_connection_init_rx_config()
2823          * since we currently do not support programming multicast
2824          * filters into the device.
2825          */
2826         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2827                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2828 }
2829
2830 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
2831 {
2832         struct iwl_priv *priv = hw->priv;
2833
2834         mutex_lock(&priv->shrd->mutex);
2835         IWL_DEBUG_MAC80211(priv, "enter\n");
2836
2837         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
2838                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
2839                 goto done;
2840         }
2841         if (iwl_is_rfkill(priv->shrd)) {
2842                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
2843                 goto done;
2844         }
2845
2846         /*
2847          * mac80211 will not push any more frames for transmit
2848          * until the flush is completed
2849          */
2850         if (drop) {
2851                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
2852                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
2853                         IWL_ERR(priv, "flush request fail\n");
2854                         goto done;
2855                 }
2856         }
2857         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
2858         iwlagn_wait_tx_queue_empty(priv);
2859 done:
2860         mutex_unlock(&priv->shrd->mutex);
2861         IWL_DEBUG_MAC80211(priv, "leave\n");
2862 }
2863
2864 void iwlagn_disable_roc(struct iwl_priv *priv)
2865 {
2866         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2867
2868         lockdep_assert_held(&priv->shrd->mutex);
2869
2870         if (!priv->hw_roc_setup)
2871                 return;
2872
2873         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2874         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2875
2876         priv->hw_roc_channel = NULL;
2877
2878         memset(ctx->staging.node_addr, 0, ETH_ALEN);
2879
2880         iwlagn_commit_rxon(priv, ctx);
2881
2882         ctx->is_active = false;
2883         priv->hw_roc_setup = false;
2884 }
2885
2886 static void iwlagn_disable_roc_work(struct work_struct *work)
2887 {
2888         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2889                                              hw_roc_disable_work.work);
2890
2891         mutex_lock(&priv->shrd->mutex);
2892         iwlagn_disable_roc(priv);
2893         mutex_unlock(&priv->shrd->mutex);
2894 }
2895
2896 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
2897                                      struct ieee80211_channel *channel,
2898                                      enum nl80211_channel_type channel_type,
2899                                      int duration)
2900 {
2901         struct iwl_priv *priv = hw->priv;
2902         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
2903         int err = 0;
2904
2905         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2906                 return -EOPNOTSUPP;
2907
2908         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
2909                 return -EOPNOTSUPP;
2910
2911         mutex_lock(&priv->shrd->mutex);
2912
2913         /*
2914          * TODO: Remove this hack! Firmware needs to be updated
2915          * to allow longer off-channel periods in scanning for
2916          * this use case, based on a flag (and we'll need an API
2917          * flag in the firmware when it has that).
2918          */
2919         if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
2920                 duration = 80;
2921
2922         if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
2923                 err = -EBUSY;
2924                 goto out;
2925         }
2926
2927         priv->hw_roc_channel = channel;
2928         priv->hw_roc_chantype = channel_type;
2929         priv->hw_roc_duration = duration;
2930         cancel_delayed_work(&priv->hw_roc_disable_work);
2931
2932         if (!ctx->is_active) {
2933                 ctx->is_active = true;
2934                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
2935                 memcpy(ctx->staging.node_addr,
2936                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2937                        ETH_ALEN);
2938                 memcpy(ctx->staging.bssid_addr,
2939                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
2940                        ETH_ALEN);
2941                 err = iwlagn_commit_rxon(priv, ctx);
2942                 if (err)
2943                         goto out;
2944                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
2945                                              RXON_FILTER_PROMISC_MSK |
2946                                              RXON_FILTER_CTL2HOST_MSK;
2947
2948                 err = iwlagn_commit_rxon(priv, ctx);
2949                 if (err) {
2950                         iwlagn_disable_roc(priv);
2951                         goto out;
2952                 }
2953                 priv->hw_roc_setup = true;
2954         }
2955
2956         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
2957         if (err)
2958                 iwlagn_disable_roc(priv);
2959
2960  out:
2961         mutex_unlock(&priv->shrd->mutex);
2962
2963         return err;
2964 }
2965
2966 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
2967 {
2968         struct iwl_priv *priv = hw->priv;
2969
2970         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
2971                 return -EOPNOTSUPP;
2972
2973         mutex_lock(&priv->shrd->mutex);
2974         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
2975         iwlagn_disable_roc(priv);
2976         mutex_unlock(&priv->shrd->mutex);
2977
2978         return 0;
2979 }
2980
2981 /*****************************************************************************
2982  *
2983  * driver setup and teardown
2984  *
2985  *****************************************************************************/
2986
2987 static void iwl_setup_deferred_work(struct iwl_priv *priv)
2988 {
2989         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
2990
2991         init_waitqueue_head(&priv->wait_command_queue);
2992
2993         INIT_WORK(&priv->restart, iwl_bg_restart);
2994         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
2995         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
2996         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
2997         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
2998         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
2999         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
3000                           iwlagn_disable_roc_work);
3001
3002         iwl_setup_scan_deferred_work(priv);
3003
3004         if (priv->cfg->lib->bt_setup_deferred_work)
3005                 priv->cfg->lib->bt_setup_deferred_work(priv);
3006
3007         init_timer(&priv->statistics_periodic);
3008         priv->statistics_periodic.data = (unsigned long)priv;
3009         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3010
3011         init_timer(&priv->ucode_trace);
3012         priv->ucode_trace.data = (unsigned long)priv;
3013         priv->ucode_trace.function = iwl_bg_ucode_trace;
3014
3015         init_timer(&priv->watchdog);
3016         priv->watchdog.data = (unsigned long)priv;
3017         priv->watchdog.function = iwl_bg_watchdog;
3018 }
3019
3020 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3021 {
3022         if (priv->cfg->lib->cancel_deferred_work)
3023                 priv->cfg->lib->cancel_deferred_work(priv);
3024
3025         cancel_work_sync(&priv->run_time_calib_work);
3026         cancel_work_sync(&priv->beacon_update);
3027
3028         iwl_cancel_scan_deferred_work(priv);
3029
3030         cancel_work_sync(&priv->bt_full_concurrency);
3031         cancel_work_sync(&priv->bt_runtime_config);
3032         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3033
3034         del_timer_sync(&priv->statistics_periodic);
3035         del_timer_sync(&priv->ucode_trace);
3036 }
3037
3038 static void iwl_init_hw_rates(struct iwl_priv *priv,
3039                               struct ieee80211_rate *rates)
3040 {
3041         int i;
3042
3043         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3044                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3045                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3046                 rates[i].hw_value_short = i;
3047                 rates[i].flags = 0;
3048                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3049                         /*
3050                          * If CCK != 1M then set short preamble rate flag.
3051                          */
3052                         rates[i].flags |=
3053                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3054                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3055                 }
3056         }
3057 }
3058
3059 static int iwl_init_drv(struct iwl_priv *priv)
3060 {
3061         int ret;
3062
3063         spin_lock_init(&priv->shrd->sta_lock);
3064
3065         mutex_init(&priv->shrd->mutex);
3066
3067         priv->ieee_channels = NULL;
3068         priv->ieee_rates = NULL;
3069         priv->band = IEEE80211_BAND_2GHZ;
3070
3071         priv->iw_mode = NL80211_IFTYPE_STATION;
3072         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3073         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3074         priv->agg_tids_count = 0;
3075
3076         /* initialize force reset */
3077         priv->force_reset[IWL_RF_RESET].reset_duration =
3078                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3079         priv->force_reset[IWL_FW_RESET].reset_duration =
3080                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3081
3082         priv->rx_statistics_jiffies = jiffies;
3083
3084         /* Choose which receivers/antennas to use */
3085         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3086
3087         iwl_init_scan_params(priv);
3088
3089         /* init bt coex */
3090         if (priv->cfg->bt_params &&
3091             priv->cfg->bt_params->advanced_bt_coexist) {
3092                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3093                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3094                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3095                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3096                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3097                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3098         }
3099
3100         ret = iwl_init_channel_map(priv);
3101         if (ret) {
3102                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3103                 goto err;
3104         }
3105
3106         ret = iwl_init_geos(priv);
3107         if (ret) {
3108                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3109                 goto err_free_channel_map;
3110         }
3111         iwl_init_hw_rates(priv, priv->ieee_rates);
3112
3113         return 0;
3114
3115 err_free_channel_map:
3116         iwl_free_channel_map(priv);
3117 err:
3118         return ret;
3119 }
3120
3121 static void iwl_uninit_drv(struct iwl_priv *priv)
3122 {
3123         iwl_calib_free_results(priv);
3124         iwl_free_geos(priv);
3125         iwl_free_channel_map(priv);
3126         kfree(priv->scan_cmd);
3127         kfree(priv->beacon_cmd);
3128 #ifdef CONFIG_IWLWIFI_DEBUGFS
3129         kfree(priv->wowlan_sram);
3130 #endif
3131 }
3132
3133 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3134                            enum ieee80211_rssi_event rssi_event)
3135 {
3136         struct iwl_priv *priv = hw->priv;
3137
3138         mutex_lock(&priv->shrd->mutex);
3139
3140         if (priv->cfg->bt_params &&
3141                         priv->cfg->bt_params->advanced_bt_coexist) {
3142                 if (rssi_event == RSSI_EVENT_LOW)
3143                         priv->bt_enable_pspoll = true;
3144                 else if (rssi_event == RSSI_EVENT_HIGH)
3145                         priv->bt_enable_pspoll = false;
3146
3147                 iwlagn_send_advance_bt_config(priv);
3148         } else {
3149                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3150                                 "ignoring RSSI callback\n");
3151         }
3152
3153         mutex_unlock(&priv->shrd->mutex);
3154 }
3155
3156 struct ieee80211_ops iwlagn_hw_ops = {
3157         .tx = iwlagn_mac_tx,
3158         .start = iwlagn_mac_start,
3159         .stop = iwlagn_mac_stop,
3160 #ifdef CONFIG_PM
3161         .suspend = iwlagn_mac_suspend,
3162         .resume = iwlagn_mac_resume,
3163 #endif
3164         .add_interface = iwl_mac_add_interface,
3165         .remove_interface = iwl_mac_remove_interface,
3166         .change_interface = iwl_mac_change_interface,
3167         .config = iwlagn_mac_config,
3168         .configure_filter = iwlagn_configure_filter,
3169         .set_key = iwlagn_mac_set_key,
3170         .update_tkip_key = iwlagn_mac_update_tkip_key,
3171         .set_rekey_data = iwlagn_mac_set_rekey_data,
3172         .conf_tx = iwl_mac_conf_tx,
3173         .bss_info_changed = iwlagn_bss_info_changed,
3174         .ampdu_action = iwlagn_mac_ampdu_action,
3175         .hw_scan = iwl_mac_hw_scan,
3176         .sta_notify = iwlagn_mac_sta_notify,
3177         .sta_add = iwlagn_mac_sta_add,
3178         .sta_remove = iwl_mac_sta_remove,
3179         .channel_switch = iwlagn_mac_channel_switch,
3180         .flush = iwlagn_mac_flush,
3181         .tx_last_beacon = iwl_mac_tx_last_beacon,
3182         .remain_on_channel = iwl_mac_remain_on_channel,
3183         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3184         .rssi_callback = iwl_mac_rssi_callback,
3185         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3186         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3187 };
3188
3189 static u32 iwl_hw_detect(struct iwl_priv *priv)
3190 {
3191         return iwl_read32(bus(priv), CSR_HW_REV);
3192 }
3193
3194 /* Size of one Rx buffer in host DRAM */
3195 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
3196 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
3197
3198 static int iwl_set_hw_params(struct iwl_priv *priv)
3199 {
3200         if (iwlagn_mod_params.amsdu_size_8K)
3201                 hw_params(priv).rx_page_order =
3202                         get_order(IWL_RX_BUF_SIZE_8K);
3203         else
3204                 hw_params(priv).rx_page_order =
3205                         get_order(IWL_RX_BUF_SIZE_4K);
3206
3207         if (iwlagn_mod_params.disable_11n)
3208                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3209
3210         hw_params(priv).num_ampdu_queues =
3211                 priv->cfg->base_params->num_of_ampdu_queues;
3212         hw_params(priv).shadow_reg_enable =
3213                 priv->cfg->base_params->shadow_reg_enable;
3214         hw_params(priv).sku =
3215                 priv->cfg->sku;
3216
3217         /* Device-specific setup */
3218         return priv->cfg->lib->set_hw_params(priv);
3219 }
3220
3221 /* This function both allocates and initializes hw and priv. */
3222 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3223 {
3224         struct iwl_priv *priv;
3225         /* mac80211 allocates memory for this device instance, including
3226          *   space for this driver's private structure */
3227         struct ieee80211_hw *hw;
3228
3229         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3230         if (hw == NULL) {
3231                 pr_err("%s: Can not allocate network device\n",
3232                        cfg->name);
3233                 goto out;
3234         }
3235
3236         priv = hw->priv;
3237         priv->hw = hw;
3238
3239 out:
3240         return hw;
3241 }
3242
3243 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3244                 struct iwl_cfg *cfg)
3245 {
3246         int err = 0;
3247         struct iwl_priv *priv;
3248         struct ieee80211_hw *hw;
3249         u16 num_mac;
3250         u32 hw_rev;
3251
3252         /************************
3253          * 1. Allocating HW data
3254          ************************/
3255         hw = iwl_alloc_all(cfg);
3256         if (!hw) {
3257                 err = -ENOMEM;
3258                 goto out;
3259         }
3260
3261         priv = hw->priv;
3262         priv->bus = bus;
3263         priv->shrd = &priv->_shrd;
3264         priv->shrd->bus = bus;
3265         priv->shrd->priv = priv;
3266         bus_set_drv_data(priv->bus, priv->shrd);
3267
3268         priv->shrd->trans = trans_ops->alloc(priv->shrd);
3269         if (priv->shrd->trans == NULL) {
3270                 err = -ENOMEM;
3271                 goto out_free_traffic_mem;
3272         }
3273
3274         /* At this point both hw and priv are allocated. */
3275
3276         SET_IEEE80211_DEV(hw, priv->bus->dev);
3277
3278         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3279         priv->cfg = cfg;
3280
3281         /* is antenna coupling more than 35dB ? */
3282         priv->bt_ant_couple_ok =
3283                 (iwlagn_mod_params.ant_coupling >
3284                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3285                         true : false;
3286
3287         /* enable/disable bt channel inhibition */
3288         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3289         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3290                        (priv->bt_ch_announce) ? "On" : "Off");
3291
3292         if (iwl_alloc_traffic_mem(priv))
3293                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3294
3295         /* these spin locks will be used in apm_ops.init and EEPROM access
3296          * we should init now
3297          */
3298         spin_lock_init(&bus(priv)->reg_lock);
3299         spin_lock_init(&priv->shrd->lock);
3300
3301         /*
3302          * stop and reset the on-board processor just in case it is in a
3303          * strange state ... like being left stranded by a primary kernel
3304          * and this is now the kdump kernel trying to start up
3305          */
3306         iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3307
3308         /***********************
3309          * 3. Read REV register
3310          ***********************/
3311         hw_rev = iwl_hw_detect(priv);
3312         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3313                 priv->cfg->name, hw_rev);
3314
3315         err = iwl_trans_request_irq(trans(priv));
3316         if (err)
3317                 goto out_free_trans;
3318
3319         if (iwl_trans_prepare_card_hw(trans(priv))) {
3320                 err = -EIO;
3321                 IWL_WARN(priv, "Failed, HW not ready\n");
3322                 goto out_free_trans;
3323         }
3324
3325         /*****************
3326          * 4. Read EEPROM
3327          *****************/
3328         /* Read the EEPROM */
3329         err = iwl_eeprom_init(priv, hw_rev);
3330         if (err) {
3331                 IWL_ERR(priv, "Unable to init EEPROM\n");
3332                 goto out_free_trans;
3333         }
3334         err = iwl_eeprom_check_version(priv);
3335         if (err)
3336                 goto out_free_eeprom;
3337
3338         err = iwl_eeprom_check_sku(priv);
3339         if (err)
3340                 goto out_free_eeprom;
3341
3342         /* extract MAC Address */
3343         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3344         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3345         priv->hw->wiphy->addresses = priv->addresses;
3346         priv->hw->wiphy->n_addresses = 1;
3347         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3348         if (num_mac > 1) {
3349                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3350                        ETH_ALEN);
3351                 priv->addresses[1].addr[5]++;
3352                 priv->hw->wiphy->n_addresses++;
3353         }
3354
3355         /************************
3356          * 5. Setup HW constants
3357          ************************/
3358         if (iwl_set_hw_params(priv)) {
3359                 err = -ENOENT;
3360                 IWL_ERR(priv, "failed to set hw parameters\n");
3361                 goto out_free_eeprom;
3362         }
3363
3364         /*******************
3365          * 6. Setup priv
3366          *******************/
3367
3368         err = iwl_init_drv(priv);
3369         if (err)
3370                 goto out_free_eeprom;
3371         /* At this point both hw and priv are initialized. */
3372
3373         /********************
3374          * 7. Setup services
3375          ********************/
3376         iwl_setup_deferred_work(priv);
3377         iwl_setup_rx_handlers(priv);
3378         iwl_testmode_init(priv);
3379
3380         /*********************************************
3381          * 8. Enable interrupts
3382          *********************************************/
3383
3384         iwl_enable_rfkill_int(priv);
3385
3386         /* If platform's RF_KILL switch is NOT set to KILL */
3387         if (iwl_read32(bus(priv),
3388                         CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3389                 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3390         else
3391                 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3392
3393         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3394                 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3395
3396         iwl_power_initialize(priv);
3397         iwl_tt_initialize(priv);
3398
3399         init_completion(&priv->firmware_loading_complete);
3400
3401         err = iwl_request_firmware(priv, true);
3402         if (err)
3403                 goto out_destroy_workqueue;
3404
3405         return 0;
3406
3407 out_destroy_workqueue:
3408         destroy_workqueue(priv->shrd->workqueue);
3409         priv->shrd->workqueue = NULL;
3410         iwl_uninit_drv(priv);
3411 out_free_eeprom:
3412         iwl_eeprom_free(priv);
3413 out_free_trans:
3414         iwl_trans_free(trans(priv));
3415 out_free_traffic_mem:
3416         iwl_free_traffic_mem(priv);
3417         ieee80211_free_hw(priv->hw);
3418 out:
3419         return err;
3420 }
3421
3422 void __devexit iwl_remove(struct iwl_priv * priv)
3423 {
3424         wait_for_completion(&priv->firmware_loading_complete);
3425
3426         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3427
3428         iwl_dbgfs_unregister(priv);
3429         sysfs_remove_group(&priv->bus->dev->kobj,
3430                            &iwl_attribute_group);
3431
3432         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3433          * to be called and iwl_down since we are removing the device
3434          * we need to set STATUS_EXIT_PENDING bit.
3435          */
3436         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3437
3438         iwl_testmode_cleanup(priv);
3439         iwl_leds_exit(priv);
3440
3441         if (priv->mac80211_registered) {
3442                 ieee80211_unregister_hw(priv->hw);
3443                 priv->mac80211_registered = 0;
3444         }
3445
3446         iwl_tt_exit(priv);
3447
3448         /*This will stop the queues, move the device to low power state */
3449         iwl_trans_stop_device(trans(priv));
3450
3451         iwl_dealloc_ucode(priv);
3452
3453         iwl_eeprom_free(priv);
3454
3455         /*netif_stop_queue(dev); */
3456         flush_workqueue(priv->shrd->workqueue);
3457
3458         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3459          * priv->shrd->workqueue... so we can't take down the workqueue
3460          * until now... */
3461         destroy_workqueue(priv->shrd->workqueue);
3462         priv->shrd->workqueue = NULL;
3463         iwl_free_traffic_mem(priv);
3464
3465         iwl_trans_free(trans(priv));
3466
3467         bus_set_drv_data(priv->bus, NULL);
3468
3469         iwl_uninit_drv(priv);
3470
3471         dev_kfree_skb(priv->beacon_skb);
3472
3473         ieee80211_free_hw(priv->hw);
3474 }
3475
3476
3477 /*****************************************************************************
3478  *
3479  * driver and module entry point
3480  *
3481  *****************************************************************************/
3482 static int __init iwl_init(void)
3483 {
3484
3485         int ret;
3486         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3487         pr_info(DRV_COPYRIGHT "\n");
3488
3489         ret = iwlagn_rate_control_register();
3490         if (ret) {
3491                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3492                 return ret;
3493         }
3494
3495         ret = iwl_pci_register_driver();
3496
3497         if (ret)
3498                 goto error_register;
3499         return ret;
3500
3501 error_register:
3502         iwlagn_rate_control_unregister();
3503         return ret;
3504 }
3505
3506 static void __exit iwl_exit(void)
3507 {
3508         iwl_pci_unregister_driver();
3509         iwlagn_rate_control_unregister();
3510 }
3511
3512 module_exit(iwl_exit);
3513 module_init(iwl_init);
3514
3515 #ifdef CONFIG_IWLWIFI_DEBUG
3516 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3517                    S_IRUGO | S_IWUSR);
3518 MODULE_PARM_DESC(debug, "debug output mask");
3519 #endif
3520
3521 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3522 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3523 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3524 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3525 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3526 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3527 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3528                    int, S_IRUGO);
3529 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3530 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3531 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3532
3533 module_param_named(ucode_alternative,
3534                    iwlagn_mod_params.wanted_ucode_alternative,
3535                    int, S_IRUGO);
3536 MODULE_PARM_DESC(ucode_alternative,
3537                  "specify ucode alternative to use from ucode file");
3538
3539 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3540                    int, S_IRUGO);
3541 MODULE_PARM_DESC(antenna_coupling,
3542                  "specify antenna coupling in dB (defualt: 0 dB)");
3543
3544 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3545                    bool, S_IRUGO);
3546 MODULE_PARM_DESC(bt_ch_inhibition,
3547                  "Enable BT channel inhibition (default: enable)");
3548
3549 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3550 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3551
3552 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3553 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3554
3555 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3556 MODULE_PARM_DESC(wd_disable,
3557                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3558
3559 /*
3560  * set bt_coex_active to true, uCode will do kill/defer
3561  * every time the priority line is asserted (BT is sending signals on the
3562  * priority line in the PCIx).
3563  * set bt_coex_active to false, uCode will ignore the BT activity and
3564  * perform the normal operation
3565  *
3566  * User might experience transmit issue on some platform due to WiFi/BT
3567  * co-exist problem. The possible behaviors are:
3568  *   Able to scan and finding all the available AP
3569  *   Not able to associate with any AP
3570  * On those platforms, WiFi communication can be restored by set
3571  * "bt_coex_active" module parameter to "false"
3572  *
3573  * default: bt_coex_active = true (BT_COEX_ENABLE)
3574  */
3575 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3576                 bool, S_IRUGO);
3577 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3578
3579 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3580 MODULE_PARM_DESC(led_mode, "0=system default, "
3581                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3582
3583 module_param_named(power_save, iwlagn_mod_params.power_save,
3584                 bool, S_IRUGO);
3585 MODULE_PARM_DESC(power_save,
3586                  "enable WiFi power management (default: disable)");
3587
3588 module_param_named(power_level, iwlagn_mod_params.power_level,
3589                 int, S_IRUGO);
3590 MODULE_PARM_DESC(power_level,
3591                  "default power save level (range from 1 - 5, default: 1)");
3592
3593 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
3594                 bool, S_IRUGO);
3595 MODULE_PARM_DESC(auto_agg,
3596                  "enable agg w/o check traffic load (default: enable)");
3597
3598 /*
3599  * For now, keep using power level 1 instead of automatically
3600  * adjusting ...
3601  */
3602 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3603                 bool, S_IRUGO);
3604 MODULE_PARM_DESC(no_sleep_autoadjust,
3605                  "don't automatically adjust sleep level "
3606                  "according to maximum network latency (default: true)");