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))
 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))
 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))
 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(&priv->reg_lock, reg_flags);
 333         if (iwl_grab_nic_access(priv)) {
 334                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 335                 return;
 336         }
 337
 338         /* Set starting address; reads will auto-increment */
 339         iwl_write32(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(priv, HBUS_TARG_MEM_RDAT);
 348                 time = iwl_read32(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(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(priv);
 360         spin_unlock_irqrestore(&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(priv, base);
 374                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 375                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 376                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 377         } else
 378                 return;
 379
 380         if (num_wraps == priv->event_log.num_wraps) {
 381                 iwl_print_cont_event_trace(priv,
 382                                        base, priv->event_log.next_entry,
 383                                        next_entry - priv->event_log.next_entry,
 384                                        mode);
 385                 priv->event_log.non_wraps_count++;
 386         } else {
 387                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 388                         priv->event_log.wraps_more_count++;
 389                 else
 390                         priv->event_log.wraps_once_count++;
 391                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 392                                 num_wraps - priv->event_log.num_wraps,
 393                                 next_entry, priv->event_log.next_entry);
 394                 if (next_entry < priv->event_log.next_entry) {
 395                         iwl_print_cont_event_trace(priv, base,
 396                                priv->event_log.next_entry,
 397                                capacity - priv->event_log.next_entry,
 398                                mode);
 399
 400                         iwl_print_cont_event_trace(priv, base, 0,
 401                                 next_entry, mode);
 402                 } else {
 403                         iwl_print_cont_event_trace(priv, base,
 404                                next_entry, capacity - next_entry,
 405                                mode);
 406
 407                         iwl_print_cont_event_trace(priv, base, 0,
 408                                 next_entry, mode);
 409                 }
 410         }
 411         priv->event_log.num_wraps = num_wraps;
 412         priv->event_log.next_entry = next_entry;
 413 }
 414
 415 /**
 416  * iwl_bg_ucode_trace - Timer callback to log ucode event
 417  *
 418  * The timer is continually set to execute every
 419  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 420  * this function is to perform continuous uCode event logging operation
 421  * if enabled
 422  */
 423 static void iwl_bg_ucode_trace(unsigned long data)
 424 {
 425         struct iwl_priv *priv = (struct iwl_priv *)data;
 426
 427         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 428                 return;
 429
 430         if (priv->event_log.ucode_trace) {
 431                 iwl_continuous_event_trace(priv);
 432                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 433                 mod_timer(&priv->ucode_trace,
 434                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 435         }
 436 }
 437
 438 static void iwl_bg_tx_flush(struct work_struct *work)
 439 {
 440         struct iwl_priv *priv =
 441                 container_of(work, struct iwl_priv, tx_flush);
 442
 443         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 444                 return;
 445
 446         /* do nothing if rf-kill is on */
 447         if (!iwl_is_ready_rf(priv))
 448                 return;
 449
 450         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 451         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 452 }
 453
 454 /*****************************************************************************
 455  *
 456  * sysfs attributes
 457  *
 458  *****************************************************************************/
 459
 460 #ifdef CONFIG_IWLWIFI_DEBUG
 461
 462 /*
 463  * The following adds a new attribute to the sysfs representation
 464  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 465  * used for controlling the debug level.
 466  *
 467  * See the level definitions in iwl for details.
 468  *
 469  * The debug_level being managed using sysfs below is a per device debug
 470  * level that is used instead of the global debug level if it (the per
 471  * device debug level) is set.
 472  */
 473 static ssize_t show_debug_level(struct device *d,
 474                                 struct device_attribute *attr, char *buf)
 475 {
 476         struct iwl_shared *shrd = dev_get_drvdata(d);
 477         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(shrd));
 478 }
 479 static ssize_t store_debug_level(struct device *d,
 480                                 struct device_attribute *attr,
 481                                  const char *buf, size_t count)
 482 {
 483         struct iwl_shared *shrd = dev_get_drvdata(d);
 484         struct iwl_priv *priv = shrd->priv;
 485         unsigned long val;
 486         int ret;
 487
 488         ret = strict_strtoul(buf, 0, &val);
 489         if (ret)
 490                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
 491         else {
 492                 shrd->dbg_level_dev = val;
 493                 if (iwl_alloc_traffic_mem(priv))
 494                         IWL_ERR(shrd->priv,
 495                                 "Not enough memory to generate traffic log\n");
 496         }
 497         return strnlen(buf, count);
 498 }
 499
 500 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
 501                         show_debug_level, store_debug_level);
 502
 503
 504 #endif /* CONFIG_IWLWIFI_DEBUG */
 505
 506
 507 static ssize_t show_temperature(struct device *d,
 508                                 struct device_attribute *attr, char *buf)
 509 {
 510         struct iwl_shared *shrd = dev_get_drvdata(d);
 511         struct iwl_priv *priv = shrd->priv;
 512
 513         if (!iwl_is_alive(priv))
 514                 return -EAGAIN;
 515
 516         return sprintf(buf, "%d\n", priv->temperature);
 517 }
 518
 519 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
 520
 521 static ssize_t show_tx_power(struct device *d,
 522                              struct device_attribute *attr, char *buf)
 523 {
 524         struct iwl_priv *priv = dev_get_drvdata(d);
 525
 526         if (!iwl_is_ready_rf(priv))
 527                 return sprintf(buf, "off\n");
 528         else
 529                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
 530 }
 531
 532 static ssize_t store_tx_power(struct device *d,
 533                               struct device_attribute *attr,
 534                               const char *buf, size_t count)
 535 {
 536         struct iwl_priv *priv = dev_get_drvdata(d);
 537         unsigned long val;
 538         int ret;
 539
 540         ret = strict_strtoul(buf, 10, &val);
 541         if (ret)
 542                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
 543         else {
 544                 ret = iwl_set_tx_power(priv, val, false);
 545                 if (ret)
 546                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
 547                                 ret);
 548                 else
 549                         ret = count;
 550         }
 551         return ret;
 552 }
 553
 554 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
 555
 556 static struct attribute *iwl_sysfs_entries[] = {
 557         &dev_attr_temperature.attr,
 558         &dev_attr_tx_power.attr,
 559 #ifdef CONFIG_IWLWIFI_DEBUG
 560         &dev_attr_debug_level.attr,
 561 #endif
 562         NULL
 563 };
 564
 565 static struct attribute_group iwl_attribute_group = {
 566         .name = NULL,           /* put in device directory */
 567         .attrs = iwl_sysfs_entries,
 568 };
 569
 570 /******************************************************************************
 571  *
 572  * uCode download functions
 573  *
 574  ******************************************************************************/
 575
 576 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
 577 {
 578         if (desc->v_addr)
 579                 dma_free_coherent(priv->bus->dev, desc->len,
 580                                   desc->v_addr, desc->p_addr);
 581         desc->v_addr = NULL;
 582         desc->len = 0;
 583 }
 584
 585 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
 586 {
 587         iwl_free_fw_desc(priv, &img->code);
 588         iwl_free_fw_desc(priv, &img->data);
 589 }
 590
 591 static void iwl_dealloc_ucode(struct iwl_priv *priv)
 592 {
 593         iwl_free_fw_img(priv, &priv->ucode_rt);
 594         iwl_free_fw_img(priv, &priv->ucode_init);
 595         iwl_free_fw_img(priv, &priv->ucode_wowlan);
 596 }
 597
 598 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
 599                              const void *data, size_t len)
 600 {
 601         if (!len) {
 602                 desc->v_addr = NULL;
 603                 return -EINVAL;
 604         }
 605
 606         desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
 607                                           &desc->p_addr, GFP_KERNEL);
 608         if (!desc->v_addr)
 609                 return -ENOMEM;
 610
 611         desc->len = len;
 612         memcpy(desc->v_addr, data, len);
 613         return 0;
 614 }
 615
 616 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 617 {
 618         static const u8 iwlagn_bss_ac_to_fifo[] = {
 619                 IWL_TX_FIFO_VO,
 620                 IWL_TX_FIFO_VI,
 621                 IWL_TX_FIFO_BE,
 622                 IWL_TX_FIFO_BK,
 623         };
 624         static const u8 iwlagn_bss_ac_to_queue[] = {
 625                 0, 1, 2, 3,
 626         };
 627         static const u8 iwlagn_pan_ac_to_fifo[] = {
 628                 IWL_TX_FIFO_VO_IPAN,
 629                 IWL_TX_FIFO_VI_IPAN,
 630                 IWL_TX_FIFO_BE_IPAN,
 631                 IWL_TX_FIFO_BK_IPAN,
 632         };
 633         static const u8 iwlagn_pan_ac_to_queue[] = {
 634                 7, 6, 5, 4,
 635         };
 636         int i;
 637
 638         /*
 639          * The default context is always valid,
 640          * the PAN context depends on uCode.
 641          */
 642         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 643         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 644                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 645
 646         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 647                 priv->contexts[i].ctxid = i;
 648
 649         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 650         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 651         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 652         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 653         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 654         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 655         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 656         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 657         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
 658         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
 659         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 660                 BIT(NL80211_IFTYPE_ADHOC);
 661         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 662                 BIT(NL80211_IFTYPE_STATION);
 663         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 664         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 665         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 666         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 667
 668         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 669         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 670                 REPLY_WIPAN_RXON_TIMING;
 671         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 672                 REPLY_WIPAN_RXON_ASSOC;
 673         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 674         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 675         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 676         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 677         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 678         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
 679         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
 680         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 681         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 682                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 683
 684         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 685                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 686                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 687                         BIT(NL80211_IFTYPE_P2P_GO);
 688
 689         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 690         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 691         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 692
 693         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 694 }
 695
 696
 697 struct iwlagn_ucode_capabilities {
 698         u32 max_probe_length;
 699         u32 standard_phy_calibration_size;
 700         u32 flags;
 701 };
 702
 703 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 704 static int iwl_mac_setup_register(struct iwl_priv *priv,
 705                                   struct iwlagn_ucode_capabilities *capa);
 706
 707 #define UCODE_EXPERIMENTAL_INDEX        100
 708 #define UCODE_EXPERIMENTAL_TAG          "exp"
 709
 710 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 711 {
 712         const char *name_pre = priv->cfg->fw_name_pre;
 713         char tag[8];
 714
 715         if (first) {
 716 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 717                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 718                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 719         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 720 #endif
 721                 priv->fw_index = priv->cfg->ucode_api_max;
 722                 sprintf(tag, "%d", priv->fw_index);
 723         } else {
 724                 priv->fw_index--;
 725                 sprintf(tag, "%d", priv->fw_index);
 726         }
 727
 728         if (priv->fw_index < priv->cfg->ucode_api_min) {
 729                 IWL_ERR(priv, "no suitable firmware found!\n");
 730                 return -ENOENT;
 731         }
 732
 733         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 734
 735         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 736                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 737                                 ? "EXPERIMENTAL " : "",
 738                        priv->firmware_name);
 739
 740         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 741                                        priv->bus->dev,
 742                                        GFP_KERNEL, priv, iwl_ucode_callback);
 743 }
 744
 745 struct iwlagn_firmware_pieces {
 746         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 747         size_t inst_size, data_size, init_size, init_data_size,
 748                wowlan_inst_size, wowlan_data_size;
 749
 750         u32 build;
 751
 752         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 753         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 754 };
 755
 756 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 757                                        const struct firmware *ucode_raw,
 758                                        struct iwlagn_firmware_pieces *pieces)
 759 {
 760         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 761         u32 api_ver, hdr_size;
 762         const u8 *src;
 763
 764         priv->ucode_ver = le32_to_cpu(ucode->ver);
 765         api_ver = IWL_UCODE_API(priv->ucode_ver);
 766
 767         switch (api_ver) {
 768         default:
 769                 hdr_size = 28;
 770                 if (ucode_raw->size < hdr_size) {
 771                         IWL_ERR(priv, "File size too small!\n");
 772                         return -EINVAL;
 773                 }
 774                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 775                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 776                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 777                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 778                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 779                 src = ucode->u.v2.data;
 780                 break;
 781         case 0:
 782         case 1:
 783         case 2:
 784                 hdr_size = 24;
 785                 if (ucode_raw->size < hdr_size) {
 786                         IWL_ERR(priv, "File size too small!\n");
 787                         return -EINVAL;
 788                 }
 789                 pieces->build = 0;
 790                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 791                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 792                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 793                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 794                 src = ucode->u.v1.data;
 795                 break;
 796         }
 797
 798         /* Verify size of file vs. image size info in file's header */
 799         if (ucode_raw->size != hdr_size + pieces->inst_size +
 800                                 pieces->data_size + pieces->init_size +
 801                                 pieces->init_data_size) {
 802
 803                 IWL_ERR(priv,
 804                         "uCode file size %d does not match expected size\n",
 805                         (int)ucode_raw->size);
 806                 return -EINVAL;
 807         }
 808
 809         pieces->inst = src;
 810         src += pieces->inst_size;
 811         pieces->data = src;
 812         src += pieces->data_size;
 813         pieces->init = src;
 814         src += pieces->init_size;
 815         pieces->init_data = src;
 816         src += pieces->init_data_size;
 817
 818         return 0;
 819 }
 820
 821 static int iwlagn_load_firmware(struct iwl_priv *priv,
 822                                 const struct firmware *ucode_raw,
 823                                 struct iwlagn_firmware_pieces *pieces,
 824                                 struct iwlagn_ucode_capabilities *capa)
 825 {
 826         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 827         struct iwl_ucode_tlv *tlv;
 828         size_t len = ucode_raw->size;
 829         const u8 *data;
 830         int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
 831         int tmp;
 832         u64 alternatives;
 833         u32 tlv_len;
 834         enum iwl_ucode_tlv_type tlv_type;
 835         const u8 *tlv_data;
 836
 837         if (len < sizeof(*ucode)) {
 838                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 839                 return -EINVAL;
 840         }
 841
 842         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 843                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 844                         le32_to_cpu(ucode->magic));
 845                 return -EINVAL;
 846         }
 847
 848         /*
 849          * Check which alternatives are present, and "downgrade"
 850          * when the chosen alternative is not present, warning
 851          * the user when that happens. Some files may not have
 852          * any alternatives, so don't warn in that case.
 853          */
 854         alternatives = le64_to_cpu(ucode->alternatives);
 855         tmp = wanted_alternative;
 856         if (wanted_alternative > 63)
 857                 wanted_alternative = 63;
 858         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 859                 wanted_alternative--;
 860         if (wanted_alternative && wanted_alternative != tmp)
 861                 IWL_WARN(priv,
 862                          "uCode alternative %d not available, choosing %d\n",
 863                          tmp, wanted_alternative);
 864
 865         priv->ucode_ver = le32_to_cpu(ucode->ver);
 866         pieces->build = le32_to_cpu(ucode->build);
 867         data = ucode->data;
 868
 869         len -= sizeof(*ucode);
 870
 871         while (len >= sizeof(*tlv)) {
 872                 u16 tlv_alt;
 873
 874                 len -= sizeof(*tlv);
 875                 tlv = (void *)data;
 876
 877                 tlv_len = le32_to_cpu(tlv->length);
 878                 tlv_type = le16_to_cpu(tlv->type);
 879                 tlv_alt = le16_to_cpu(tlv->alternative);
 880                 tlv_data = tlv->data;
 881
 882                 if (len < tlv_len) {
 883                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 884                                 len, tlv_len);
 885                         return -EINVAL;
 886                 }
 887                 len -= ALIGN(tlv_len, 4);
 888                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 889
 890                 /*
 891                  * Alternative 0 is always valid.
 892                  *
 893                  * Skip alternative TLVs that are not selected.
 894                  */
 895                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 896                         continue;
 897
 898                 switch (tlv_type) {
 899                 case IWL_UCODE_TLV_INST:
 900                         pieces->inst = tlv_data;
 901                         pieces->inst_size = tlv_len;
 902                         break;
 903                 case IWL_UCODE_TLV_DATA:
 904                         pieces->data = tlv_data;
 905                         pieces->data_size = tlv_len;
 906                         break;
 907                 case IWL_UCODE_TLV_INIT:
 908                         pieces->init = tlv_data;
 909                         pieces->init_size = tlv_len;
 910                         break;
 911                 case IWL_UCODE_TLV_INIT_DATA:
 912                         pieces->init_data = tlv_data;
 913                         pieces->init_data_size = tlv_len;
 914                         break;
 915                 case IWL_UCODE_TLV_BOOT:
 916                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 917                         break;
 918                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 919                         if (tlv_len != sizeof(u32))
 920                                 goto invalid_tlv_len;
 921                         capa->max_probe_length =
 922                                         le32_to_cpup((__le32 *)tlv_data);
 923                         break;
 924                 case IWL_UCODE_TLV_PAN:
 925                         if (tlv_len)
 926                                 goto invalid_tlv_len;
 927                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 928                         break;
 929                 case IWL_UCODE_TLV_FLAGS:
 930                         /* must be at least one u32 */
 931                         if (tlv_len < sizeof(u32))
 932                                 goto invalid_tlv_len;
 933                         /* and a proper number of u32s */
 934                         if (tlv_len % sizeof(u32))
 935                                 goto invalid_tlv_len;
 936                         /*
 937                          * This driver only reads the first u32 as
 938                          * right now no more features are defined,
 939                          * if that changes then either the driver
 940                          * will not work with the new firmware, or
 941                          * it'll not take advantage of new features.
 942                          */
 943                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 944                         break;
 945                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 946                         if (tlv_len != sizeof(u32))
 947                                 goto invalid_tlv_len;
 948                         pieces->init_evtlog_ptr =
 949                                         le32_to_cpup((__le32 *)tlv_data);
 950                         break;
 951                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 952                         if (tlv_len != sizeof(u32))
 953                                 goto invalid_tlv_len;
 954                         pieces->init_evtlog_size =
 955                                         le32_to_cpup((__le32 *)tlv_data);
 956                         break;
 957                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 958                         if (tlv_len != sizeof(u32))
 959                                 goto invalid_tlv_len;
 960                         pieces->init_errlog_ptr =
 961                                         le32_to_cpup((__le32 *)tlv_data);
 962                         break;
 963                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 964                         if (tlv_len != sizeof(u32))
 965                                 goto invalid_tlv_len;
 966                         pieces->inst_evtlog_ptr =
 967                                         le32_to_cpup((__le32 *)tlv_data);
 968                         break;
 969                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 970                         if (tlv_len != sizeof(u32))
 971                                 goto invalid_tlv_len;
 972                         pieces->inst_evtlog_size =
 973                                         le32_to_cpup((__le32 *)tlv_data);
 974                         break;
 975                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 976                         if (tlv_len != sizeof(u32))
 977                                 goto invalid_tlv_len;
 978                         pieces->inst_errlog_ptr =
 979                                         le32_to_cpup((__le32 *)tlv_data);
 980                         break;
 981                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 982                         if (tlv_len)
 983                                 goto invalid_tlv_len;
 984                         priv->enhance_sensitivity_table = true;
 985                         break;
 986                 case IWL_UCODE_TLV_WOWLAN_INST:
 987                         pieces->wowlan_inst = tlv_data;
 988                         pieces->wowlan_inst_size = tlv_len;
 989                         break;
 990                 case IWL_UCODE_TLV_WOWLAN_DATA:
 991                         pieces->wowlan_data = tlv_data;
 992                         pieces->wowlan_data_size = tlv_len;
 993                         break;
 994                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 995                         if (tlv_len != sizeof(u32))
 996                                 goto invalid_tlv_len;
 997                         capa->standard_phy_calibration_size =
 998                                         le32_to_cpup((__le32 *)tlv_data);
 999                         break;
1000                 default:
1001                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1002                         break;
1003                 }
1004         }
1005
1006         if (len) {
1007                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1008                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1009                 return -EINVAL;
1010         }
1011
1012         return 0;
1013
1014  invalid_tlv_len:
1015         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1016         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1017
1018         return -EINVAL;
1019 }
1020
1021 /**
1022  * iwl_ucode_callback - callback when firmware was loaded
1023  *
1024  * If loaded successfully, copies the firmware into buffers
1025  * for the card to fetch (via DMA).
1026  */
1027 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1028 {
1029         struct iwl_priv *priv = context;
1030         struct iwl_ucode_header *ucode;
1031         int err;
1032         struct iwlagn_firmware_pieces pieces;
1033         const unsigned int api_max = priv->cfg->ucode_api_max;
1034         unsigned int api_ok = priv->cfg->ucode_api_ok;
1035         const unsigned int api_min = priv->cfg->ucode_api_min;
1036         u32 api_ver;
1037         char buildstr[25];
1038         u32 build;
1039         struct iwlagn_ucode_capabilities ucode_capa = {
1040                 .max_probe_length = 200,
1041                 .standard_phy_calibration_size =
1042                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1043         };
1044
1045         if (!api_ok)
1046                 api_ok = api_max;
1047
1048         memset(&pieces, 0, sizeof(pieces));
1049
1050         if (!ucode_raw) {
1051                 if (priv->fw_index <= api_ok)
1052                         IWL_ERR(priv,
1053                                 "request for firmware file '%s' failed.\n",
1054                                 priv->firmware_name);
1055                 goto try_again;
1056         }
1057
1058         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1059                        priv->firmware_name, ucode_raw->size);
1060
1061         /* Make sure that we got at least the API version number */
1062         if (ucode_raw->size < 4) {
1063                 IWL_ERR(priv, "File size way too small!\n");
1064                 goto try_again;
1065         }
1066
1067         /* Data from ucode file:  header followed by uCode images */
1068         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1069
1070         if (ucode->ver)
1071                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1072         else
1073                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1074                                            &ucode_capa);
1075
1076         if (err)
1077                 goto try_again;
1078
1079         api_ver = IWL_UCODE_API(priv->ucode_ver);
1080         build = pieces.build;
1081
1082         /*
1083          * api_ver should match the api version forming part of the
1084          * firmware filename ... but we don't check for that and only rely
1085          * on the API version read from firmware header from here on forward
1086          */
1087         /* no api version check required for experimental uCode */
1088         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1089                 if (api_ver < api_min || api_ver > api_max) {
1090                         IWL_ERR(priv,
1091                                 "Driver unable to support your firmware API. "
1092                                 "Driver supports v%u, firmware is v%u.\n",
1093                                 api_max, api_ver);
1094                         goto try_again;
1095                 }
1096
1097                 if (api_ver < api_ok) {
1098                         if (api_ok != api_max)
1099                                 IWL_ERR(priv, "Firmware has old API version, "
1100                                         "expected v%u through v%u, got v%u.\n",
1101                                         api_ok, api_max, api_ver);
1102                         else
1103                                 IWL_ERR(priv, "Firmware has old API version, "
1104                                         "expected v%u, got v%u.\n",
1105                                         api_max, api_ver);
1106                         IWL_ERR(priv, "New firmware can be obtained from "
1107                                       "http://www.intellinuxwireless.org/.\n");
1108                 }
1109         }
1110
1111         if (build)
1112                 sprintf(buildstr, " build %u%s", build,
1113                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1114                                 ? " (EXP)" : "");
1115         else
1116                 buildstr[0] = '\0';
1117
1118         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1119                  IWL_UCODE_MAJOR(priv->ucode_ver),
1120                  IWL_UCODE_MINOR(priv->ucode_ver),
1121                  IWL_UCODE_API(priv->ucode_ver),
1122                  IWL_UCODE_SERIAL(priv->ucode_ver),
1123                  buildstr);
1124
1125         snprintf(priv->hw->wiphy->fw_version,
1126                  sizeof(priv->hw->wiphy->fw_version),
1127                  "%u.%u.%u.%u%s",
1128                  IWL_UCODE_MAJOR(priv->ucode_ver),
1129                  IWL_UCODE_MINOR(priv->ucode_ver),
1130                  IWL_UCODE_API(priv->ucode_ver),
1131                  IWL_UCODE_SERIAL(priv->ucode_ver),
1132                  buildstr);
1133
1134         /*
1135          * For any of the failures below (before allocating pci memory)
1136          * we will try to load a version with a smaller API -- maybe the
1137          * user just got a corrupted version of the latest API.
1138          */
1139
1140         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1141                        priv->ucode_ver);
1142         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1143                        pieces.inst_size);
1144         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1145                        pieces.data_size);
1146         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1147                        pieces.init_size);
1148         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1149                        pieces.init_data_size);
1150
1151         /* Verify that uCode images will fit in card's SRAM */
1152         if (pieces.inst_size > hw_params(priv).max_inst_size) {
1153                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1154                         pieces.inst_size);
1155                 goto try_again;
1156         }
1157
1158         if (pieces.data_size > hw_params(priv).max_data_size) {
1159                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1160                         pieces.data_size);
1161                 goto try_again;
1162         }
1163
1164         if (pieces.init_size > hw_params(priv).max_inst_size) {
1165                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1166                         pieces.init_size);
1167                 goto try_again;
1168         }
1169
1170         if (pieces.init_data_size > hw_params(priv).max_data_size) {
1171                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1172                         pieces.init_data_size);
1173                 goto try_again;
1174         }
1175
1176         /* Allocate ucode buffers for card's bus-master loading ... */
1177
1178         /* Runtime instructions and 2 copies of data:
1179          * 1) unmodified from disk
1180          * 2) backup cache for save/restore during power-downs */
1181         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1182                               pieces.inst, pieces.inst_size))
1183                 goto err_pci_alloc;
1184         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1185                               pieces.data, pieces.data_size))
1186                 goto err_pci_alloc;
1187
1188         /* Initialization instructions and data */
1189         if (pieces.init_size && pieces.init_data_size) {
1190                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1191                                       pieces.init, pieces.init_size))
1192                         goto err_pci_alloc;
1193                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1194                                       pieces.init_data, pieces.init_data_size))
1195                         goto err_pci_alloc;
1196         }
1197
1198         /* WoWLAN instructions and data */
1199         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1200                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1201                                       pieces.wowlan_inst,
1202                                       pieces.wowlan_inst_size))
1203                         goto err_pci_alloc;
1204                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1205                                       pieces.wowlan_data,
1206                                       pieces.wowlan_data_size))
1207                         goto err_pci_alloc;
1208         }
1209
1210         /* Now that we can no longer fail, copy information */
1211
1212         /*
1213          * The (size - 16) / 12 formula is based on the information recorded
1214          * for each event, which is of mode 1 (including timestamp) for all
1215          * new microcodes that include this information.
1216          */
1217         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1218         if (pieces.init_evtlog_size)
1219                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1220         else
1221                 priv->init_evtlog_size =
1222                         priv->cfg->base_params->max_event_log_size;
1223         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1224         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1225         if (pieces.inst_evtlog_size)
1226                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1227         else
1228                 priv->inst_evtlog_size =
1229                         priv->cfg->base_params->max_event_log_size;
1230         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1231
1232         priv->new_scan_threshold_behaviour =
1233                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1234
1235         if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1236                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1237
1238         /*
1239          * if not PAN, then don't support P2P -- might be a uCode
1240          * packaging bug or due to the eeprom check above
1241          */
1242         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1243                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1244
1245         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1246                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1247                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1248         } else {
1249                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1250                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1251         }
1252
1253         /*
1254          * figure out the offset of chain noise reset and gain commands
1255          * base on the size of standard phy calibration commands table size
1256          */
1257         if (ucode_capa.standard_phy_calibration_size >
1258             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1259                 ucode_capa.standard_phy_calibration_size =
1260                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1261
1262         priv->phy_calib_chain_noise_reset_cmd =
1263                 ucode_capa.standard_phy_calibration_size;
1264         priv->phy_calib_chain_noise_gain_cmd =
1265                 ucode_capa.standard_phy_calibration_size + 1;
1266
1267         /* initialize all valid contexts */
1268         iwl_init_context(priv, ucode_capa.flags);
1269
1270         /**************************************************
1271          * This is still part of probe() in a sense...
1272          *
1273          * 9. Setup and register with mac80211 and debugfs
1274          **************************************************/
1275         err = iwl_mac_setup_register(priv, &ucode_capa);
1276         if (err)
1277                 goto out_unbind;
1278
1279         err = iwl_dbgfs_register(priv, DRV_NAME);
1280         if (err)
1281                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1282
1283         err = sysfs_create_group(&(priv->bus->dev->kobj),
1284                                         &iwl_attribute_group);
1285         if (err) {
1286                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1287                 goto out_unbind;
1288         }
1289
1290         /* We have our copies now, allow OS release its copies */
1291         release_firmware(ucode_raw);
1292         complete(&priv->firmware_loading_complete);
1293         return;
1294
1295  try_again:
1296         /* try next, if any */
1297         if (iwl_request_firmware(priv, false))
1298                 goto out_unbind;
1299         release_firmware(ucode_raw);
1300         return;
1301
1302  err_pci_alloc:
1303         IWL_ERR(priv, "failed to allocate pci memory\n");
1304         iwl_dealloc_ucode(priv);
1305  out_unbind:
1306         complete(&priv->firmware_loading_complete);
1307         device_release_driver(priv->bus->dev);
1308         release_firmware(ucode_raw);
1309 }
1310
1311 static const char * const desc_lookup_text[] = {
1312         "OK",
1313         "FAIL",
1314         "BAD_PARAM",
1315         "BAD_CHECKSUM",
1316         "NMI_INTERRUPT_WDG",
1317         "SYSASSERT",
1318         "FATAL_ERROR",
1319         "BAD_COMMAND",
1320         "HW_ERROR_TUNE_LOCK",
1321         "HW_ERROR_TEMPERATURE",
1322         "ILLEGAL_CHAN_FREQ",
1323         "VCC_NOT_STABLE",
1324         "FH_ERROR",
1325         "NMI_INTERRUPT_HOST",
1326         "NMI_INTERRUPT_ACTION_PT",
1327         "NMI_INTERRUPT_UNKNOWN",
1328         "UCODE_VERSION_MISMATCH",
1329         "HW_ERROR_ABS_LOCK",
1330         "HW_ERROR_CAL_LOCK_FAIL",
1331         "NMI_INTERRUPT_INST_ACTION_PT",
1332         "NMI_INTERRUPT_DATA_ACTION_PT",
1333         "NMI_TRM_HW_ER",
1334         "NMI_INTERRUPT_TRM",
1335         "NMI_INTERRUPT_BREAK_POINT",
1336         "DEBUG_0",
1337         "DEBUG_1",
1338         "DEBUG_2",
1339         "DEBUG_3",
1340 };
1341
1342 static struct { char *name; u8 num; } advanced_lookup[] = {
1343         { "NMI_INTERRUPT_WDG", 0x34 },
1344         { "SYSASSERT", 0x35 },
1345         { "UCODE_VERSION_MISMATCH", 0x37 },
1346         { "BAD_COMMAND", 0x38 },
1347         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1348         { "FATAL_ERROR", 0x3D },
1349         { "NMI_TRM_HW_ERR", 0x46 },
1350         { "NMI_INTERRUPT_TRM", 0x4C },
1351         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1352         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1353         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1354         { "NMI_INTERRUPT_HOST", 0x66 },
1355         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1356         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1357         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1358         { "ADVANCED_SYSASSERT", 0 },
1359 };
1360
1361 static const char *desc_lookup(u32 num)
1362 {
1363         int i;
1364         int max = ARRAY_SIZE(desc_lookup_text);
1365
1366         if (num < max)
1367                 return desc_lookup_text[num];
1368
1369         max = ARRAY_SIZE(advanced_lookup) - 1;
1370         for (i = 0; i < max; i++) {
1371                 if (advanced_lookup[i].num == num)
1372                         break;
1373         }
1374         return advanced_lookup[i].name;
1375 }
1376
1377 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1378 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1379
1380 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1381 {
1382         u32 base;
1383         struct iwl_error_event_table table;
1384
1385         base = priv->device_pointers.error_event_table;
1386         if (priv->ucode_type == IWL_UCODE_INIT) {
1387                 if (!base)
1388                         base = priv->init_errlog_ptr;
1389         } else {
1390                 if (!base)
1391                         base = priv->inst_errlog_ptr;
1392         }
1393
1394         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1395                 IWL_ERR(priv,
1396                         "Not valid error log pointer 0x%08X for %s uCode\n",
1397                         base,
1398                         (priv->ucode_type == IWL_UCODE_INIT)
1399                                         ? "Init" : "RT");
1400                 return;
1401         }
1402
1403         iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1404
1405         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1406                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1407                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1408                         priv->shrd->status, table.valid);
1409         }
1410
1411         priv->isr_stats.err_code = table.error_id;
1412
1413         trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1414                                       table.data1, table.data2, table.line,
1415                                       table.blink1, table.blink2, table.ilink1,
1416                                       table.ilink2, table.bcon_time, table.gp1,
1417                                       table.gp2, table.gp3, table.ucode_ver,
1418                                       table.hw_ver, table.brd_ver);
1419         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1420                 desc_lookup(table.error_id));
1421         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1422         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1423         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1424         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1425         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1426         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1427         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1428         IWL_ERR(priv, "0x%08X | line\n", table.line);
1429         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1430         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1431         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1432         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1433         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1434         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1435         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1436         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1437         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1438         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1439 }
1440
1441 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1442
1443 /**
1444  * iwl_print_event_log - Dump error event log to syslog
1445  *
1446  */
1447 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1448                                u32 num_events, u32 mode,
1449                                int pos, char **buf, size_t bufsz)
1450 {
1451         u32 i;
1452         u32 base;       /* SRAM byte address of event log header */
1453         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1454         u32 ptr;        /* SRAM byte address of log data */
1455         u32 ev, time, data; /* event log data */
1456         unsigned long reg_flags;
1457
1458         if (num_events == 0)
1459                 return pos;
1460
1461         base = priv->device_pointers.log_event_table;
1462         if (priv->ucode_type == IWL_UCODE_INIT) {
1463                 if (!base)
1464                         base = priv->init_evtlog_ptr;
1465         } else {
1466                 if (!base)
1467                         base = priv->inst_evtlog_ptr;
1468         }
1469
1470         if (mode == 0)
1471                 event_size = 2 * sizeof(u32);
1472         else
1473                 event_size = 3 * sizeof(u32);
1474
1475         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1476
1477         /* Make sure device is powered up for SRAM reads */
1478         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1479         iwl_grab_nic_access(priv);
1480
1481         /* Set starting address; reads will auto-increment */
1482         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1483         rmb();
1484
1485         /* "time" is actually "data" for mode 0 (no timestamp).
1486         * place event id # at far right for easier visual parsing. */
1487         for (i = 0; i < num_events; i++) {
1488                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1489                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1490                 if (mode == 0) {
1491                         /* data, ev */
1492                         if (bufsz) {
1493                                 pos += scnprintf(*buf + pos, bufsz - pos,
1494                                                 "EVT_LOG:0x%08x:%04u\n",
1495                                                 time, ev);
1496                         } else {
1497                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1498                                         time, ev);
1499                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1500                                         time, ev);
1501                         }
1502                 } else {
1503                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1504                         if (bufsz) {
1505                                 pos += scnprintf(*buf + pos, bufsz - pos,
1506                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1507                                                  time, data, ev);
1508                         } else {
1509                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1510                                         time, data, ev);
1511                                 trace_iwlwifi_dev_ucode_event(priv, time,
1512                                         data, ev);
1513                         }
1514                 }
1515         }
1516
1517         /* Allow device to power down */
1518         iwl_release_nic_access(priv);
1519         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1520         return pos;
1521 }
1522
1523 /**
1524  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1525  */
1526 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1527                                     u32 num_wraps, u32 next_entry,
1528                                     u32 size, u32 mode,
1529                                     int pos, char **buf, size_t bufsz)
1530 {
1531         /*
1532          * display the newest DEFAULT_LOG_ENTRIES entries
1533          * i.e the entries just before the next ont that uCode would fill.
1534          */
1535         if (num_wraps) {
1536                 if (next_entry < size) {
1537                         pos = iwl_print_event_log(priv,
1538                                                 capacity - (size - next_entry),
1539                                                 size - next_entry, mode,
1540                                                 pos, buf, bufsz);
1541                         pos = iwl_print_event_log(priv, 0,
1542                                                   next_entry, mode,
1543                                                   pos, buf, bufsz);
1544                 } else
1545                         pos = iwl_print_event_log(priv, next_entry - size,
1546                                                   size, mode, pos, buf, bufsz);
1547         } else {
1548                 if (next_entry < size) {
1549                         pos = iwl_print_event_log(priv, 0, next_entry,
1550                                                   mode, pos, buf, bufsz);
1551                 } else {
1552                         pos = iwl_print_event_log(priv, next_entry - size,
1553                                                   size, mode, pos, buf, bufsz);
1554                 }
1555         }
1556         return pos;
1557 }
1558
1559 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1560
1561 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1562                             char **buf, bool display)
1563 {
1564         u32 base;       /* SRAM byte address of event log header */
1565         u32 capacity;   /* event log capacity in # entries */
1566         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1567         u32 num_wraps;  /* # times uCode wrapped to top of log */
1568         u32 next_entry; /* index of next entry to be written by uCode */
1569         u32 size;       /* # entries that we'll print */
1570         u32 logsize;
1571         int pos = 0;
1572         size_t bufsz = 0;
1573
1574         base = priv->device_pointers.log_event_table;
1575         if (priv->ucode_type == IWL_UCODE_INIT) {
1576                 logsize = priv->init_evtlog_size;
1577                 if (!base)
1578                         base = priv->init_evtlog_ptr;
1579         } else {
1580                 logsize = priv->inst_evtlog_size;
1581                 if (!base)
1582                         base = priv->inst_evtlog_ptr;
1583         }
1584
1585         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1586                 IWL_ERR(priv,
1587                         "Invalid event log pointer 0x%08X for %s uCode\n",
1588                         base,
1589                         (priv->ucode_type == IWL_UCODE_INIT)
1590                                         ? "Init" : "RT");
1591                 return -EINVAL;
1592         }
1593
1594         /* event log header */
1595         capacity = iwl_read_targ_mem(priv, base);
1596         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1597         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1598         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1599
1600         if (capacity > logsize) {
1601                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1602                         capacity, logsize);
1603                 capacity = logsize;
1604         }
1605
1606         if (next_entry > logsize) {
1607                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1608                         next_entry, logsize);
1609                 next_entry = logsize;
1610         }
1611
1612         size = num_wraps ? capacity : next_entry;
1613
1614         /* bail out if nothing in log */
1615         if (size == 0) {
1616                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1617                 return pos;
1618         }
1619
1620         /* enable/disable bt channel inhibition */
1621         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1622
1623 #ifdef CONFIG_IWLWIFI_DEBUG
1624         if (!(iwl_get_debug_level(priv->shrd) & IWL_DL_FW_ERRORS) && !full_log)
1625                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1626                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1627 #else
1628         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1629                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1630 #endif
1631         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1632                 size);
1633
1634 #ifdef CONFIG_IWLWIFI_DEBUG
1635         if (display) {
1636                 if (full_log)
1637                         bufsz = capacity * 48;
1638                 else
1639                         bufsz = size * 48;
1640                 *buf = kmalloc(bufsz, GFP_KERNEL);
1641                 if (!*buf)
1642                         return -ENOMEM;
1643         }
1644         if ((iwl_get_debug_level(priv->shrd) & IWL_DL_FW_ERRORS) || full_log) {
1645                 /*
1646                  * if uCode has wrapped back to top of log,
1647                  * start at the oldest entry,
1648                  * i.e the next one that uCode would fill.
1649                  */
1650                 if (num_wraps)
1651                         pos = iwl_print_event_log(priv, next_entry,
1652                                                 capacity - next_entry, mode,
1653                                                 pos, buf, bufsz);
1654                 /* (then/else) start at top of log */
1655                 pos = iwl_print_event_log(priv, 0,
1656                                           next_entry, mode, pos, buf, bufsz);
1657         } else
1658                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1659                                                 next_entry, size, mode,
1660                                                 pos, buf, bufsz);
1661 #else
1662         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1663                                         next_entry, size, mode,
1664                                         pos, buf, bufsz);
1665 #endif
1666         return pos;
1667 }
1668
1669 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1670 {
1671         struct iwl_ct_kill_config cmd;
1672         struct iwl_ct_kill_throttling_config adv_cmd;
1673         unsigned long flags;
1674         int ret = 0;
1675
1676         spin_lock_irqsave(&priv->shrd->lock, flags);
1677         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1678                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1679         spin_unlock_irqrestore(&priv->shrd->lock, flags);
1680         priv->thermal_throttle.ct_kill_toggle = false;
1681
1682         if (priv->cfg->base_params->support_ct_kill_exit) {
1683                 adv_cmd.critical_temperature_enter =
1684                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1685                 adv_cmd.critical_temperature_exit =
1686                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1687
1688                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1689                                        REPLY_CT_KILL_CONFIG_CMD,
1690                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1691                 if (ret)
1692                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1693                 else
1694                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1695                                 "succeeded, critical temperature enter is %d,"
1696                                 "exit is %d\n",
1697                                 hw_params(priv).ct_kill_threshold,
1698                                 hw_params(priv).ct_kill_exit_threshold);
1699         } else {
1700                 cmd.critical_temperature_R =
1701                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1702
1703                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1704                                        REPLY_CT_KILL_CONFIG_CMD,
1705                                        CMD_SYNC, sizeof(cmd), &cmd);
1706                 if (ret)
1707                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1708                 else
1709                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1710                                 "succeeded, "
1711                                 "critical temperature is %d\n",
1712                                 hw_params(priv).ct_kill_threshold);
1713         }
1714 }
1715
1716 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1717 {
1718         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1719         struct iwl_host_cmd cmd = {
1720                 .id = CALIBRATION_CFG_CMD,
1721                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1722                 .data = { &calib_cfg_cmd, },
1723         };
1724
1725         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1726         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1727         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1728
1729         return iwl_trans_send_cmd(trans(priv), &cmd);
1730 }
1731
1732
1733 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1734 {
1735         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1736           .valid = cpu_to_le32(valid_tx_ant),
1737         };
1738
1739         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1740                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1741                 return iwl_trans_send_cmd_pdu(trans(priv),
1742                                         TX_ANT_CONFIGURATION_CMD,
1743                                         CMD_SYNC,
1744                                         sizeof(struct iwl_tx_ant_config_cmd),
1745                                         &tx_ant_cmd);
1746         } else {
1747                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1748                 return -EOPNOTSUPP;
1749         }
1750 }
1751
1752 /**
1753  * iwl_alive_start - called after REPLY_ALIVE notification received
1754  *                   from protocol/runtime uCode (initialization uCode's
1755  *                   Alive gets handled by iwl_init_alive_start()).
1756  */
1757 int iwl_alive_start(struct iwl_priv *priv)
1758 {
1759         int ret = 0;
1760         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1761
1762         /*TODO: this should go to the transport layer */
1763         iwl_reset_ict(priv);
1764
1765         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1766
1767         /* After the ALIVE response, we can send host commands to the uCode */
1768         set_bit(STATUS_ALIVE, &priv->shrd->status);
1769
1770         /* Enable watchdog to monitor the driver tx queues */
1771         iwl_setup_watchdog(priv);
1772
1773         if (iwl_is_rfkill(priv))
1774                 return -ERFKILL;
1775
1776         /* download priority table before any calibration request */
1777         if (priv->cfg->bt_params &&
1778             priv->cfg->bt_params->advanced_bt_coexist) {
1779                 /* Configure Bluetooth device coexistence support */
1780                 if (priv->cfg->bt_params->bt_sco_disable)
1781                         priv->bt_enable_pspoll = false;
1782                 else
1783                         priv->bt_enable_pspoll = true;
1784
1785                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1786                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1787                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1788                 iwlagn_send_advance_bt_config(priv);
1789                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1790                 priv->cur_rssi_ctx = NULL;
1791
1792                 iwlagn_send_prio_tbl(priv);
1793
1794                 /* FIXME: w/a to force change uCode BT state machine */
1795                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1796                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1797                 if (ret)
1798                         return ret;
1799                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1800                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1801                 if (ret)
1802                         return ret;
1803         } else {
1804                 /*
1805                  * default is 2-wire BT coexexistence support
1806                  */
1807                 iwl_send_bt_config(priv);
1808         }
1809
1810         if (hw_params(priv).calib_rt_cfg)
1811                 iwlagn_send_calib_cfg_rt(priv,
1812                                          hw_params(priv).calib_rt_cfg);
1813
1814         ieee80211_wake_queues(priv->hw);
1815
1816         priv->active_rate = IWL_RATES_MASK;
1817
1818         /* Configure Tx antenna selection based on H/W config */
1819         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1820
1821         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
1822                 struct iwl_rxon_cmd *active_rxon =
1823                                 (struct iwl_rxon_cmd *)&ctx->active;
1824                 /* apply any changes in staging */
1825                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1826                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1827         } else {
1828                 struct iwl_rxon_context *tmp;
1829                 /* Initialize our rx_config data */
1830                 for_each_context(priv, tmp)
1831                         iwl_connection_init_rx_config(priv, tmp);
1832
1833                 iwlagn_set_rxon_chain(priv, ctx);
1834         }
1835
1836         if (!priv->wowlan) {
1837                 /* WoWLAN ucode will not reply in the same way, skip it */
1838                 iwl_reset_run_time_calib(priv);
1839         }
1840
1841         set_bit(STATUS_READY, &priv->shrd->status);
1842
1843         /* Configure the adapter for unassociated operation */
1844         ret = iwlagn_commit_rxon(priv, ctx);
1845         if (ret)
1846                 return ret;
1847
1848         /* At this point, the NIC is initialized and operational */
1849         iwl_rf_kill_ct_config(priv);
1850
1851         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1852
1853         return iwl_power_update_mode(priv, true);
1854 }
1855
1856 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1857
1858 static void __iwl_down(struct iwl_priv *priv)
1859 {
1860         int exit_pending;
1861
1862         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1863
1864         iwl_scan_cancel_timeout(priv, 200);
1865
1866         /*
1867          * If active, scanning won't cancel it, so say it expired.
1868          * No race since we hold the mutex here and a new one
1869          * can't come in at this time.
1870          */
1871         ieee80211_remain_on_channel_expired(priv->hw);
1872
1873         exit_pending =
1874                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1875
1876         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1877          * to prevent rearm timer */
1878         del_timer_sync(&priv->watchdog);
1879
1880         iwl_clear_ucode_stations(priv, NULL);
1881         iwl_dealloc_bcast_stations(priv);
1882         iwl_clear_driver_stations(priv);
1883
1884         /* reset BT coex data */
1885         priv->bt_status = 0;
1886         priv->cur_rssi_ctx = NULL;
1887         priv->bt_is_sco = 0;
1888         if (priv->cfg->bt_params)
1889                 priv->bt_traffic_load =
1890                          priv->cfg->bt_params->bt_init_traffic_load;
1891         else
1892                 priv->bt_traffic_load = 0;
1893         priv->bt_full_concurrent = false;
1894         priv->bt_ci_compliance = 0;
1895
1896         /* Wipe out the EXIT_PENDING status bit if we are not actually
1897          * exiting the module */
1898         if (!exit_pending)
1899                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1900
1901         if (priv->mac80211_registered)
1902                 ieee80211_stop_queues(priv->hw);
1903
1904         /* Clear out all status bits but a few that are stable across reset */
1905         priv->shrd->status &=
1906                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1907                                 STATUS_RF_KILL_HW |
1908                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1909                                 STATUS_GEO_CONFIGURED |
1910                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1911                                 STATUS_FW_ERROR |
1912                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1913                                 STATUS_EXIT_PENDING;
1914
1915         iwl_trans_stop_device(trans(priv));
1916
1917         dev_kfree_skb(priv->beacon_skb);
1918         priv->beacon_skb = NULL;
1919 }
1920
1921 static void iwl_down(struct iwl_priv *priv)
1922 {
1923         mutex_lock(&priv->shrd->mutex);
1924         __iwl_down(priv);
1925         mutex_unlock(&priv->shrd->mutex);
1926
1927         iwl_cancel_deferred_work(priv);
1928 }
1929
1930 #define MAX_HW_RESTARTS 5
1931
1932 static int __iwl_up(struct iwl_priv *priv)
1933 {
1934         struct iwl_rxon_context *ctx;
1935         int ret;
1936
1937         lockdep_assert_held(&priv->shrd->mutex);
1938
1939         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
1940                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1941                 return -EIO;
1942         }
1943
1944         for_each_context(priv, ctx) {
1945                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1946                 if (ret) {
1947                         iwl_dealloc_bcast_stations(priv);
1948                         return ret;
1949                 }
1950         }
1951
1952         ret = iwlagn_run_init_ucode(priv);
1953         if (ret) {
1954                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1955                 goto error;
1956         }
1957
1958         ret = iwlagn_load_ucode_wait_alive(priv,
1959                                            &priv->ucode_rt,
1960                                            IWL_UCODE_REGULAR);
1961         if (ret) {
1962                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1963                 goto error;
1964         }
1965
1966         ret = iwl_alive_start(priv);
1967         if (ret)
1968                 goto error;
1969         return 0;
1970
1971  error:
1972         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1973         __iwl_down(priv);
1974         clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1975
1976         IWL_ERR(priv, "Unable to initialize device.\n");
1977         return ret;
1978 }
1979
1980
1981 /*****************************************************************************
1982  *
1983  * Workqueue callbacks
1984  *
1985  *****************************************************************************/
1986
1987 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1988 {
1989         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1990                         run_time_calib_work);
1991
1992         mutex_lock(&priv->shrd->mutex);
1993
1994         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1995             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1996                 mutex_unlock(&priv->shrd->mutex);
1997                 return;
1998         }
1999
2000         if (priv->start_calib) {
2001                 iwl_chain_noise_calibration(priv);
2002                 iwl_sensitivity_calibration(priv);
2003         }
2004
2005         mutex_unlock(&priv->shrd->mutex);
2006 }
2007
2008 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2009 {
2010         struct iwl_rxon_context *ctx;
2011         bool bt_full_concurrent;
2012         u8 bt_ci_compliance;
2013         u8 bt_load;
2014         u8 bt_status;
2015         bool bt_is_sco;
2016
2017         lockdep_assert_held(&priv->shrd->mutex);
2018
2019         for_each_context(priv, ctx)
2020                 ctx->vif = NULL;
2021         priv->is_open = 0;
2022
2023         /*
2024          * __iwl_down() will clear the BT status variables,
2025          * which is correct, but when we restart we really
2026          * want to keep them so restore them afterwards.
2027          *
2028          * The restart process will later pick them up and
2029          * re-configure the hw when we reconfigure the BT
2030          * command.
2031          */
2032         bt_full_concurrent = priv->bt_full_concurrent;
2033         bt_ci_compliance = priv->bt_ci_compliance;
2034         bt_load = priv->bt_traffic_load;
2035         bt_status = priv->bt_status;
2036         bt_is_sco = priv->bt_is_sco;
2037
2038         __iwl_down(priv);
2039
2040         priv->bt_full_concurrent = bt_full_concurrent;
2041         priv->bt_ci_compliance = bt_ci_compliance;
2042         priv->bt_traffic_load = bt_load;
2043         priv->bt_status = bt_status;
2044         priv->bt_is_sco = bt_is_sco;
2045 }
2046
2047 static void iwl_bg_restart(struct work_struct *data)
2048 {
2049         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2050
2051         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2052                 return;
2053
2054         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
2055                 mutex_lock(&priv->shrd->mutex);
2056                 iwlagn_prepare_restart(priv);
2057                 mutex_unlock(&priv->shrd->mutex);
2058                 iwl_cancel_deferred_work(priv);
2059                 ieee80211_restart_hw(priv->hw);
2060         } else {
2061                 WARN_ON(1);
2062         }
2063 }
2064
2065 /*****************************************************************************
2066  *
2067  * mac80211 entry point functions
2068  *
2069  *****************************************************************************/
2070
2071 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2072         {
2073                 .max = 1,
2074                 .types = BIT(NL80211_IFTYPE_STATION),
2075         },
2076         {
2077                 .max = 1,
2078                 .types = BIT(NL80211_IFTYPE_AP),
2079         },
2080 };
2081
2082 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2083         {
2084                 .max = 2,
2085                 .types = BIT(NL80211_IFTYPE_STATION),
2086         },
2087 };
2088
2089 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2090         {
2091                 .max = 1,
2092                 .types = BIT(NL80211_IFTYPE_STATION),
2093         },
2094         {
2095                 .max = 1,
2096                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2097                          BIT(NL80211_IFTYPE_AP),
2098         },
2099 };
2100
2101 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2102         {
2103                 .max = 2,
2104                 .types = BIT(NL80211_IFTYPE_STATION),
2105         },
2106         {
2107                 .max = 1,
2108                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2109         },
2110 };
2111
2112 static const struct ieee80211_iface_combination
2113 iwlagn_iface_combinations_dualmode[] = {
2114         { .num_different_channels = 1,
2115           .max_interfaces = 2,
2116           .beacon_int_infra_match = true,
2117           .limits = iwlagn_sta_ap_limits,
2118           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2119         },
2120         { .num_different_channels = 1,
2121           .max_interfaces = 2,
2122           .limits = iwlagn_2sta_limits,
2123           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2124         },
2125 };
2126
2127 static const struct ieee80211_iface_combination
2128 iwlagn_iface_combinations_p2p[] = {
2129         { .num_different_channels = 1,
2130           .max_interfaces = 2,
2131           .beacon_int_infra_match = true,
2132           .limits = iwlagn_p2p_sta_go_limits,
2133           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2134         },
2135         { .num_different_channels = 1,
2136           .max_interfaces = 2,
2137           .limits = iwlagn_p2p_2sta_limits,
2138           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2139         },
2140 };
2141
2142 /*
2143  * Not a mac80211 entry point function, but it fits in with all the
2144  * other mac80211 functions grouped here.
2145  */
2146 static int iwl_mac_setup_register(struct iwl_priv *priv,
2147                                   struct iwlagn_ucode_capabilities *capa)
2148 {
2149         int ret;
2150         struct ieee80211_hw *hw = priv->hw;
2151         struct iwl_rxon_context *ctx;
2152
2153         hw->rate_control_algorithm = "iwl-agn-rs";
2154
2155         /* Tell mac80211 our characteristics */
2156         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2157                     IEEE80211_HW_AMPDU_AGGREGATION |
2158                     IEEE80211_HW_NEED_DTIM_PERIOD |
2159                     IEEE80211_HW_SPECTRUM_MGMT |
2160                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2161
2162         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2163
2164         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2165                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2166
2167         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2168                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2169                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2170
2171         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2172                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2173
2174         hw->sta_data_size = sizeof(struct iwl_station_priv);
2175         hw->vif_data_size = sizeof(struct iwl_vif_priv);
2176
2177         for_each_context(priv, ctx) {
2178                 hw->wiphy->interface_modes |= ctx->interface_modes;
2179                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2180         }
2181
2182         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2183
2184         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2185                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2186                 hw->wiphy->n_iface_combinations =
2187                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2188         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2189                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2190                 hw->wiphy->n_iface_combinations =
2191                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2192         }
2193
2194         hw->wiphy->max_remain_on_channel_duration = 1000;
2195
2196         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2197                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
2198                             WIPHY_FLAG_IBSS_RSN;
2199
2200         if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2201                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2202                                           WIPHY_WOWLAN_DISCONNECT |
2203                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2204                                           WIPHY_WOWLAN_RFKILL_RELEASE;
2205                 if (!iwlagn_mod_params.sw_crypto)
2206                         hw->wiphy->wowlan.flags |=
2207                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2208                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2209
2210                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2211                 hw->wiphy->wowlan.pattern_min_len =
2212                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2213                 hw->wiphy->wowlan.pattern_max_len =
2214                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2215         }
2216
2217         if (iwlagn_mod_params.power_save)
2218                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2219         else
2220                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2221
2222         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2223         /* we create the 802.11 header and a zero-length SSID element */
2224         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2225
2226         /* Default value; 4 EDCA QOS priorities */
2227         hw->queues = 4;
2228
2229         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2230
2231         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2232                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2233                         &priv->bands[IEEE80211_BAND_2GHZ];
2234         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2235                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2236                         &priv->bands[IEEE80211_BAND_5GHZ];
2237
2238         iwl_leds_init(priv);
2239
2240         ret = ieee80211_register_hw(priv->hw);
2241         if (ret) {
2242                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2243                 return ret;
2244         }
2245         priv->mac80211_registered = 1;
2246
2247         return 0;
2248 }
2249
2250
2251 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2252 {
2253         struct iwl_priv *priv = hw->priv;
2254         int ret;
2255
2256         IWL_DEBUG_MAC80211(priv, "enter\n");
2257
2258         /* we should be verifying the device is ready to be opened */
2259         mutex_lock(&priv->shrd->mutex);
2260         ret = __iwl_up(priv);
2261         mutex_unlock(&priv->shrd->mutex);
2262         if (ret)
2263                 return ret;
2264
2265         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2266
2267         /* Now we should be done, and the READY bit should be set. */
2268         if (WARN_ON(!test_bit(STATUS_READY, &priv->shrd->status)))
2269                 ret = -EIO;
2270
2271         iwlagn_led_enable(priv);
2272
2273         priv->is_open = 1;
2274         IWL_DEBUG_MAC80211(priv, "leave\n");
2275         return 0;
2276 }
2277
2278 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2279 {
2280         struct iwl_priv *priv = hw->priv;
2281
2282         IWL_DEBUG_MAC80211(priv, "enter\n");
2283
2284         if (!priv->is_open)
2285                 return;
2286
2287         priv->is_open = 0;
2288
2289         iwl_down(priv);
2290
2291         flush_workqueue(priv->shrd->workqueue);
2292
2293         /* User space software may expect getting rfkill changes
2294          * even if interface is down */
2295         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2296         iwl_enable_rfkill_int(priv);
2297
2298         IWL_DEBUG_MAC80211(priv, "leave\n");
2299 }
2300
2301 #ifdef CONFIG_PM
2302 static int iwlagn_send_patterns(struct iwl_priv *priv,
2303                                 struct cfg80211_wowlan *wowlan)
2304 {
2305         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2306         struct iwl_host_cmd cmd = {
2307                 .id = REPLY_WOWLAN_PATTERNS,
2308                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2309                 .flags = CMD_SYNC,
2310         };
2311         int i, err;
2312
2313         if (!wowlan->n_patterns)
2314                 return 0;
2315
2316         cmd.len[0] = sizeof(*pattern_cmd) +
2317                         wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2318
2319         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2320         if (!pattern_cmd)
2321                 return -ENOMEM;
2322
2323         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2324
2325         for (i = 0; i < wowlan->n_patterns; i++) {
2326                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2327
2328                 memcpy(&pattern_cmd->patterns[i].mask,
2329                         wowlan->patterns[i].mask, mask_len);
2330                 memcpy(&pattern_cmd->patterns[i].pattern,
2331                         wowlan->patterns[i].pattern,
2332                         wowlan->patterns[i].pattern_len);
2333                 pattern_cmd->patterns[i].mask_size = mask_len;
2334                 pattern_cmd->patterns[i].pattern_size =
2335                         wowlan->patterns[i].pattern_len;
2336         }
2337
2338         cmd.data[0] = pattern_cmd;
2339         err = iwl_trans_send_cmd(trans(priv), &cmd);
2340         kfree(pattern_cmd);
2341         return err;
2342 }
2343 #endif
2344
2345 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2346                                       struct ieee80211_vif *vif,
2347                                       struct cfg80211_gtk_rekey_data *data)
2348 {
2349         struct iwl_priv *priv = hw->priv;
2350
2351         if (iwlagn_mod_params.sw_crypto)
2352                 return;
2353
2354         mutex_lock(&priv->shrd->mutex);
2355
2356         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2357                 goto out;
2358
2359         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2360         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2361         priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2362         priv->have_rekey_data = true;
2363
2364  out:
2365         mutex_unlock(&priv->shrd->mutex);
2366 }
2367
2368 struct wowlan_key_data {
2369         struct iwl_rxon_context *ctx;
2370         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2371         struct iwlagn_wowlan_tkip_params_cmd *tkip;
2372         const u8 *bssid;
2373         bool error, use_rsc_tsc, use_tkip;
2374 };
2375
2376 #ifdef CONFIG_PM
2377 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2378 {
2379         int i;
2380
2381         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2382                 out[i] = cpu_to_le16(p1k[i]);
2383 }
2384
2385 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2386                                        struct ieee80211_vif *vif,
2387                                        struct ieee80211_sta *sta,
2388                                        struct ieee80211_key_conf *key,
2389                                        void *_data)
2390 {
2391         struct iwl_priv *priv = hw->priv;
2392         struct wowlan_key_data *data = _data;
2393         struct iwl_rxon_context *ctx = data->ctx;
2394         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2395         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2396         struct iwlagn_p1k_cache *rx_p1ks;
2397         u8 *rx_mic_key;
2398         struct ieee80211_key_seq seq;
2399         u32 cur_rx_iv32 = 0;
2400         u16 p1k[IWLAGN_P1K_SIZE];
2401         int ret, i;
2402
2403         mutex_lock(&priv->shrd->mutex);
2404
2405         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2406              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2407              !sta && !ctx->key_mapping_keys)
2408                 ret = iwl_set_default_wep_key(priv, ctx, key);
2409         else
2410                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2411
2412         if (ret) {
2413                 IWL_ERR(priv, "Error setting key during suspend!\n");
2414                 data->error = true;
2415         }
2416
2417         switch (key->cipher) {
2418         case WLAN_CIPHER_SUITE_TKIP:
2419                 if (sta) {
2420                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2421                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2422
2423                         rx_p1ks = data->tkip->rx_uni;
2424
2425                         ieee80211_get_key_tx_seq(key, &seq);
2426                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2427                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2428
2429                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2430                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2431
2432                         memcpy(data->tkip->mic_keys.tx,
2433                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2434                                IWLAGN_MIC_KEY_SIZE);
2435
2436                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
2437                 } else {
2438                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2439                         rx_p1ks = data->tkip->rx_multi;
2440                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
2441                 }
2442
2443                 /*
2444                  * For non-QoS this relies on the fact that both the uCode and
2445                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
2446                  * for checking the IV in the frames.
2447                  */
2448                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2449                         ieee80211_get_key_rx_seq(key, i, &seq);
2450                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2451                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2452                         /* wrapping isn't allowed, AP must rekey */
2453                         if (seq.tkip.iv32 > cur_rx_iv32)
2454                                 cur_rx_iv32 = seq.tkip.iv32;
2455                 }
2456
2457                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2458                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2459                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2460                                           cur_rx_iv32 + 1, p1k);
2461                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2462
2463                 memcpy(rx_mic_key,
2464                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2465                        IWLAGN_MIC_KEY_SIZE);
2466
2467                 data->use_tkip = true;
2468                 data->use_rsc_tsc = true;
2469                 break;
2470         case WLAN_CIPHER_SUITE_CCMP:
2471                 if (sta) {
2472                         u8 *pn = seq.ccmp.pn;
2473
2474                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2475                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2476
2477                         ieee80211_get_key_tx_seq(key, &seq);
2478                         aes_tx_sc->pn = cpu_to_le64(
2479                                         (u64)pn[5] |
2480                                         ((u64)pn[4] << 8) |
2481                                         ((u64)pn[3] << 16) |
2482                                         ((u64)pn[2] << 24) |
2483                                         ((u64)pn[1] << 32) |
2484                                         ((u64)pn[0] << 40));
2485                 } else
2486                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2487
2488                 /*
2489                  * For non-QoS this relies on the fact that both the uCode and
2490                  * mac80211 use TID 0 for checking the IV in the frames.
2491                  */
2492                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2493                         u8 *pn = seq.ccmp.pn;
2494
2495                         ieee80211_get_key_rx_seq(key, i, &seq);
2496                         aes_sc->pn = cpu_to_le64(
2497                                         (u64)pn[5] |
2498                                         ((u64)pn[4] << 8) |
2499                                         ((u64)pn[3] << 16) |
2500                                         ((u64)pn[2] << 24) |
2501                                         ((u64)pn[1] << 32) |
2502                                         ((u64)pn[0] << 40));
2503                 }
2504                 data->use_rsc_tsc = true;
2505                 break;
2506         }
2507
2508         mutex_unlock(&priv->shrd->mutex);
2509 }
2510
2511 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2512                               struct cfg80211_wowlan *wowlan)
2513 {
2514         struct iwl_priv *priv = hw->priv;
2515         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2516         struct iwl_rxon_cmd rxon;
2517         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2518         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2519         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2520         struct wowlan_key_data key_data = {
2521                 .ctx = ctx,
2522                 .bssid = ctx->active.bssid_addr,
2523                 .use_rsc_tsc = false,
2524                 .tkip = &tkip_cmd,
2525                 .use_tkip = false,
2526         };
2527         int ret, i;
2528         u16 seq;
2529
2530         if (WARN_ON(!wowlan))
2531                 return -EINVAL;
2532
2533         mutex_lock(&priv->shrd->mutex);
2534
2535         /* Don't attempt WoWLAN when not associated, tear down instead. */
2536         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2537             !iwl_is_associated_ctx(ctx)) {
2538                 ret = 1;
2539                 goto out;
2540         }
2541
2542         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2543         if (!key_data.rsc_tsc) {
2544                 ret = -ENOMEM;
2545                 goto out;
2546         }
2547
2548         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2549
2550         /*
2551          * We know the last used seqno, and the uCode expects to know that
2552          * one, it will increment before TX.
2553          */
2554         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2555         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2556
2557         /*
2558          * For QoS counters, we store the one to use next, so subtract 0x10
2559          * since the uCode will add 0x10 before using the value.
2560          */
2561         for (i = 0; i < 8; i++) {
2562                 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2563                 seq -= 0x10;
2564                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2565         }
2566
2567         if (wowlan->disconnect)
2568                 wakeup_filter_cmd.enabled |=
2569                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2570                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2571         if (wowlan->magic_pkt)
2572                 wakeup_filter_cmd.enabled |=
2573                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2574         if (wowlan->gtk_rekey_failure)
2575                 wakeup_filter_cmd.enabled |=
2576                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2577         if (wowlan->eap_identity_req)
2578                 wakeup_filter_cmd.enabled |=
2579                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2580         if (wowlan->four_way_handshake)
2581                 wakeup_filter_cmd.enabled |=
2582                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2583         if (wowlan->rfkill_release)
2584                 wakeup_filter_cmd.enabled |=
2585                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2586         if (wowlan->n_patterns)
2587                 wakeup_filter_cmd.enabled |=
2588                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2589
2590         iwl_scan_cancel_timeout(priv, 200);
2591
2592         memcpy(&rxon, &ctx->active, sizeof(rxon));
2593
2594         iwl_trans_stop_device(trans(priv));
2595
2596         priv->wowlan = true;
2597
2598         ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2599                                            IWL_UCODE_WOWLAN);
2600         if (ret)
2601                 goto error;
2602
2603         /* now configure WoWLAN ucode */
2604         ret = iwl_alive_start(priv);
2605         if (ret)
2606                 goto error;
2607
2608         memcpy(&ctx->staging, &rxon, sizeof(rxon));
2609         ret = iwlagn_commit_rxon(priv, ctx);
2610         if (ret)
2611                 goto error;
2612
2613         ret = iwl_power_update_mode(priv, true);
2614         if (ret)
2615                 goto error;
2616
2617         if (!iwlagn_mod_params.sw_crypto) {
2618                 /* mark all keys clear */
2619                 priv->ucode_key_table = 0;
2620                 ctx->key_mapping_keys = 0;
2621
2622                 /*
2623                  * This needs to be unlocked due to lock ordering
2624                  * constraints. Since we're in the suspend path
2625                  * that isn't really a problem though.
2626                  */
2627                 mutex_unlock(&priv->shrd->mutex);
2628                 ieee80211_iter_keys(priv->hw, ctx->vif,
2629                                     iwlagn_wowlan_program_keys,
2630                                     &key_data);
2631                 mutex_lock(&priv->shrd->mutex);
2632                 if (key_data.error) {
2633                         ret = -EIO;
2634                         goto error;
2635                 }
2636
2637                 if (key_data.use_rsc_tsc) {
2638                         struct iwl_host_cmd rsc_tsc_cmd = {
2639                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2640                                 .flags = CMD_SYNC,
2641                                 .data[0] = key_data.rsc_tsc,
2642                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2643                                 .len[0] = sizeof(*key_data.rsc_tsc),
2644                         };
2645
2646                         ret = iwl_trans_send_cmd(trans(priv), &rsc_tsc_cmd);
2647                         if (ret)
2648                                 goto error;
2649                 }
2650
2651                 if (key_data.use_tkip) {
2652                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2653                                                  REPLY_WOWLAN_TKIP_PARAMS,
2654                                                  CMD_SYNC, sizeof(tkip_cmd),
2655                                                  &tkip_cmd);
2656                         if (ret)
2657                                 goto error;
2658                 }
2659
2660                 if (priv->have_rekey_data) {
2661                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2662                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2663                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2664                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2665                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2666                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
2667
2668                         ret = iwl_trans_send_cmd_pdu(trans(priv),
2669                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
2670                                                  CMD_SYNC, sizeof(kek_kck_cmd),
2671                                                  &kek_kck_cmd);
2672                         if (ret)
2673                                 goto error;
2674                 }
2675         }
2676
2677         ret = iwl_trans_send_cmd_pdu(trans(priv), REPLY_WOWLAN_WAKEUP_FILTER,
2678                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
2679                                  &wakeup_filter_cmd);
2680         if (ret)
2681                 goto error;
2682
2683         ret = iwlagn_send_patterns(priv, wowlan);
2684         if (ret)
2685                 goto error;
2686
2687         device_set_wakeup_enable(priv->bus->dev, true);
2688
2689         /* Now let the ucode operate on its own */
2690         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2691                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2692
2693         goto out;
2694
2695  error:
2696         priv->wowlan = false;
2697         iwlagn_prepare_restart(priv);
2698         ieee80211_restart_hw(priv->hw);
2699  out:
2700         mutex_unlock(&priv->shrd->mutex);
2701         kfree(key_data.rsc_tsc);
2702         return ret;
2703 }
2704
2705 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2706 {
2707         struct iwl_priv *priv = hw->priv;
2708         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2709         struct ieee80211_vif *vif;
2710         unsigned long flags;
2711         u32 base, status = 0xffffffff;
2712         int ret = -EIO;
2713
2714         mutex_lock(&priv->shrd->mutex);
2715
2716         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2717                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2718
2719         base = priv->device_pointers.error_event_table;
2720         if (iwlagn_hw_valid_rtc_data_addr(base)) {
2721                 spin_lock_irqsave(&priv->reg_lock, flags);
2722                 ret = iwl_grab_nic_access_silent(priv);
2723                 if (ret == 0) {
2724                         iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2725                         status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2726                         iwl_release_nic_access(priv);
2727                 }
2728                 spin_unlock_irqrestore(&priv->reg_lock, flags);
2729
2730 #ifdef CONFIG_IWLWIFI_DEBUGFS
2731                 if (ret == 0) {
2732                         if (!priv->wowlan_sram)
2733                                 priv->wowlan_sram =
2734                                         kzalloc(priv->ucode_wowlan.data.len,
2735                                                 GFP_KERNEL);
2736
2737                         if (priv->wowlan_sram)
2738                                 _iwl_read_targ_mem_words(
2739                                         priv, 0x800000, priv->wowlan_sram,
2740                                         priv->ucode_wowlan.data.len / 4);
2741                 }
2742 #endif
2743         }
2744
2745         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2746         vif = ctx->vif;
2747
2748         priv->wowlan = false;
2749
2750         device_set_wakeup_enable(priv->bus->dev, false);
2751
2752         iwlagn_prepare_restart(priv);
2753
2754         memset((void *)&ctx->active, 0, sizeof(ctx->active));
2755         iwl_connection_init_rx_config(priv, ctx);
2756         iwlagn_set_rxon_chain(priv, ctx);
2757
2758         mutex_unlock(&priv->shrd->mutex);
2759
2760         ieee80211_resume_disconnect(vif);
2761
2762         return 1;
2763 }
2764 #endif
2765
2766 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2767 {
2768         struct iwl_priv *priv = hw->priv;
2769
2770         IWL_DEBUG_MACDUMP(priv, "enter\n");
2771
2772         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2773                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2774
2775         if (iwlagn_tx_skb(priv, skb))
2776                 dev_kfree_skb_any(skb);
2777
2778         IWL_DEBUG_MACDUMP(priv, "leave\n");
2779 }
2780
2781 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2782                                        struct ieee80211_vif *vif,
2783                                        struct ieee80211_key_conf *keyconf,
2784                                        struct ieee80211_sta *sta,
2785                                        u32 iv32, u16 *phase1key)
2786 {
2787         struct iwl_priv *priv = hw->priv;
2788
2789         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2790 }
2791
2792 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2793                               struct ieee80211_vif *vif,
2794                               struct ieee80211_sta *sta,
2795                               struct ieee80211_key_conf *key)
2796 {
2797         struct iwl_priv *priv = hw->priv;
2798         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2799         struct iwl_rxon_context *ctx = vif_priv->ctx;
2800         int ret;
2801         bool is_default_wep_key = false;
2802
2803         IWL_DEBUG_MAC80211(priv, "enter\n");
2804
2805         if (iwlagn_mod_params.sw_crypto) {
2806                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2807                 return -EOPNOTSUPP;
2808         }
2809
2810         /*
2811          * We could program these keys into the hardware as well, but we
2812          * don't expect much multicast traffic in IBSS and having keys
2813          * for more stations is probably more useful.
2814          *
2815          * Mark key TX-only and return 0.
2816          */
2817         if (vif->type == NL80211_IFTYPE_ADHOC &&
2818             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2819                 key->hw_key_idx = WEP_INVALID_OFFSET;
2820                 return 0;
2821         }
2822
2823         /* If they key was TX-only, accept deletion */
2824         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2825                 return 0;
2826
2827         mutex_lock(&priv->shrd->mutex);
2828         iwl_scan_cancel_timeout(priv, 100);
2829
2830         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2831
2832         /*
2833          * If we are getting WEP group key and we didn't receive any key mapping
2834          * so far, we are in legacy wep mode (group key only), otherwise we are
2835          * in 1X mode.
2836          * In legacy wep mode, we use another host command to the uCode.
2837          */
2838         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2839              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2840                 if (cmd == SET_KEY)
2841                         is_default_wep_key = !ctx->key_mapping_keys;
2842                 else
2843                         is_default_wep_key =
2844                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2845         }
2846
2847
2848         switch (cmd) {
2849         case SET_KEY:
2850                 if (is_default_wep_key) {
2851                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2852                         break;
2853                 }
2854                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2855                 if (ret) {
2856                         /*
2857                          * can't add key for RX, but we don't need it
2858                          * in the device for TX so still return 0
2859                          */
2860                         ret = 0;
2861                         key->hw_key_idx = WEP_INVALID_OFFSET;
2862                 }
2863
2864                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2865                 break;
2866         case DISABLE_KEY:
2867                 if (is_default_wep_key)
2868                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2869                 else
2870                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2871
2872                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2873                 break;
2874         default:
2875                 ret = -EINVAL;
2876         }
2877
2878         mutex_unlock(&priv->shrd->mutex);
2879         IWL_DEBUG_MAC80211(priv, "leave\n");
2880
2881         return ret;
2882 }
2883
2884 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2885                                    struct ieee80211_vif *vif,
2886                                    enum ieee80211_ampdu_mlme_action action,
2887                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2888                                    u8 buf_size)
2889 {
2890         struct iwl_priv *priv = hw->priv;
2891         int ret = -EINVAL;
2892         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2893
2894         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2895                      sta->addr, tid);
2896
2897         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2898                 return -EACCES;
2899
2900         mutex_lock(&priv->shrd->mutex);
2901
2902         switch (action) {
2903         case IEEE80211_AMPDU_RX_START:
2904                 IWL_DEBUG_HT(priv, "start Rx\n");
2905                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2906                 break;
2907         case IEEE80211_AMPDU_RX_STOP:
2908                 IWL_DEBUG_HT(priv, "stop Rx\n");
2909                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2910                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2911                         ret = 0;
2912                 break;
2913         case IEEE80211_AMPDU_TX_START:
2914                 IWL_DEBUG_HT(priv, "start Tx\n");
2915                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2916                 if (ret == 0) {
2917                         priv->agg_tids_count++;
2918                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2919                                      priv->agg_tids_count);
2920                 }
2921                 break;
2922         case IEEE80211_AMPDU_TX_STOP:
2923                 IWL_DEBUG_HT(priv, "stop Tx\n");
2924                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2925                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2926                         priv->agg_tids_count--;
2927                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2928                                      priv->agg_tids_count);
2929                 }
2930                 if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
2931                         ret = 0;
2932                 if (priv->cfg->ht_params &&
2933                     priv->cfg->ht_params->use_rts_for_aggregation) {
2934                         /*
2935                          * switch off RTS/CTS if it was previously enabled
2936                          */
2937                         sta_priv->lq_sta.lq.general_params.flags &=
2938                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2939                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2940                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2941                 }
2942                 break;
2943         case IEEE80211_AMPDU_TX_OPERATIONAL:
2944                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2945
2946                 iwl_trans_txq_agg_setup(trans(priv), iwl_sta_id(sta), tid,
2947                                 buf_size);
2948
2949                 /*
2950                  * If the limit is 0, then it wasn't initialised yet,
2951                  * use the default. We can do that since we take the
2952                  * minimum below, and we don't want to go above our
2953                  * default due to hardware restrictions.
2954                  */
2955                 if (sta_priv->max_agg_bufsize == 0)
2956                         sta_priv->max_agg_bufsize =
2957                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2958
2959                 /*
2960                  * Even though in theory the peer could have different
2961                  * aggregation reorder buffer sizes for different sessions,
2962                  * our ucode doesn't allow for that and has a global limit
2963                  * for each station. Therefore, use the minimum of all the
2964                  * aggregation sessions and our default value.
2965                  */
2966                 sta_priv->max_agg_bufsize =
2967                         min(sta_priv->max_agg_bufsize, buf_size);
2968
2969                 if (priv->cfg->ht_params &&
2970                     priv->cfg->ht_params->use_rts_for_aggregation) {
2971                         /*
2972                          * switch to RTS/CTS if it is the prefer protection
2973                          * method for HT traffic
2974                          */
2975
2976                         sta_priv->lq_sta.lq.general_params.flags |=
2977                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2978                 }
2979
2980                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2981                         sta_priv->max_agg_bufsize;
2982
2983                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2984                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2985
2986                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2987                          sta->addr, tid);
2988                 ret = 0;
2989                 break;
2990         }
2991         mutex_unlock(&priv->shrd->mutex);
2992
2993         return ret;
2994 }
2995
2996 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2997                               struct ieee80211_vif *vif,
2998                               struct ieee80211_sta *sta)
2999 {
3000         struct iwl_priv *priv = hw->priv;
3001         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3002         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3003         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3004         int ret;
3005         u8 sta_id;
3006
3007         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3008                         sta->addr);
3009         mutex_lock(&priv->shrd->mutex);
3010         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3011                         sta->addr);
3012         sta_priv->common.sta_id = IWL_INVALID_STATION;
3013
3014         atomic_set(&sta_priv->pending_frames, 0);
3015         if (vif->type == NL80211_IFTYPE_AP)
3016                 sta_priv->client = true;
3017
3018         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3019                                      is_ap, sta, &sta_id);
3020         if (ret) {
3021                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3022                         sta->addr, ret);
3023                 /* Should we return success if return code is EEXIST ? */
3024                 mutex_unlock(&priv->shrd->mutex);
3025                 return ret;
3026         }
3027
3028         sta_priv->common.sta_id = sta_id;
3029
3030         /* Initialize rate scaling */
3031         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3032                        sta->addr);
3033         iwl_rs_rate_init(priv, sta, sta_id);
3034         mutex_unlock(&priv->shrd->mutex);
3035
3036         return 0;
3037 }
3038
3039 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3040                                 struct ieee80211_channel_switch *ch_switch)
3041 {
3042         struct iwl_priv *priv = hw->priv;
3043         const struct iwl_channel_info *ch_info;
3044         struct ieee80211_conf *conf = &hw->conf;
3045         struct ieee80211_channel *channel = ch_switch->channel;
3046         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3047         /*
3048          * MULTI-FIXME
3049          * When we add support for multiple interfaces, we need to
3050          * revisit this. The channel switch command in the device
3051          * only affects the BSS context, but what does that really
3052          * mean? And what if we get a CSA on the second interface?
3053          * This needs a lot of work.
3054          */
3055         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3056         u16 ch;
3057
3058         IWL_DEBUG_MAC80211(priv, "enter\n");
3059
3060         mutex_lock(&priv->shrd->mutex);
3061
3062         if (iwl_is_rfkill(priv))
3063                 goto out;
3064
3065         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
3066             test_bit(STATUS_SCANNING, &priv->shrd->status) ||
3067             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status))
3068                 goto out;
3069
3070         if (!iwl_is_associated_ctx(ctx))
3071                 goto out;
3072
3073         if (!priv->cfg->lib->set_channel_switch)
3074                 goto out;
3075
3076         ch = channel->hw_value;
3077         if (le16_to_cpu(ctx->active.channel) == ch)
3078                 goto out;
3079
3080         ch_info = iwl_get_channel_info(priv, channel->band, ch);
3081         if (!is_channel_valid(ch_info)) {
3082                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3083                 goto out;
3084         }
3085
3086         spin_lock_irq(&priv->shrd->lock);
3087
3088         priv->current_ht_config.smps = conf->smps_mode;
3089
3090         /* Configure HT40 channels */
3091         ctx->ht.enabled = conf_is_ht(conf);
3092         if (ctx->ht.enabled) {
3093                 if (conf_is_ht40_minus(conf)) {
3094                         ctx->ht.extension_chan_offset =
3095                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3096                         ctx->ht.is_40mhz = true;
3097                 } else if (conf_is_ht40_plus(conf)) {
3098                         ctx->ht.extension_chan_offset =
3099                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3100                         ctx->ht.is_40mhz = true;
3101                 } else {
3102                         ctx->ht.extension_chan_offset =
3103                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3104                         ctx->ht.is_40mhz = false;
3105                 }
3106         } else
3107                 ctx->ht.is_40mhz = false;
3108
3109         if ((le16_to_cpu(ctx->staging.channel) != ch))
3110                 ctx->staging.flags = 0;
3111
3112         iwl_set_rxon_channel(priv, channel, ctx);
3113         iwl_set_rxon_ht(priv, ht_conf);
3114         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3115
3116         spin_unlock_irq(&priv->shrd->lock);
3117
3118         iwl_set_rate(priv);
3119         /*
3120          * at this point, staging_rxon has the
3121          * configuration for channel switch
3122          */
3123         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
3124         priv->switch_channel = cpu_to_le16(ch);
3125         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
3126                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->shrd->status);
3127                 priv->switch_channel = 0;
3128                 ieee80211_chswitch_done(ctx->vif, false);
3129         }
3130
3131 out:
3132         mutex_unlock(&priv->shrd->mutex);
3133         IWL_DEBUG_MAC80211(priv, "leave\n");
3134 }
3135
3136 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3137                                     unsigned int changed_flags,
3138                                     unsigned int *total_flags,
3139                                     u64 multicast)
3140 {
3141         struct iwl_priv *priv = hw->priv;
3142         __le32 filter_or = 0, filter_nand = 0;
3143         struct iwl_rxon_context *ctx;
3144
3145 #define CHK(test, flag) do { \
3146         if (*total_flags & (test))              \
3147                 filter_or |= (flag);            \
3148         else                                    \
3149                 filter_nand |= (flag);          \
3150         } while (0)
3151
3152         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3153                         changed_flags, *total_flags);
3154
3155         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3156         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3157         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3158         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3159
3160 #undef CHK
3161
3162         mutex_lock(&priv->shrd->mutex);
3163
3164         for_each_context(priv, ctx) {
3165                 ctx->staging.filter_flags &= ~filter_nand;
3166                 ctx->staging.filter_flags |= filter_or;
3167
3168                 /*
3169                  * Not committing directly because hardware can perform a scan,
3170                  * but we'll eventually commit the filter flags change anyway.
3171                  */
3172         }
3173
3174         mutex_unlock(&priv->shrd->mutex);
3175
3176         /*
3177          * Receiving all multicast frames is always enabled by the
3178          * default flags setup in iwl_connection_init_rx_config()
3179          * since we currently do not support programming multicast
3180          * filters into the device.
3181          */
3182         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3183                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3184 }
3185
3186 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3187 {
3188         struct iwl_priv *priv = hw->priv;
3189
3190         mutex_lock(&priv->shrd->mutex);
3191         IWL_DEBUG_MAC80211(priv, "enter\n");
3192
3193         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status)) {
3194                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3195                 goto done;
3196         }
3197         if (iwl_is_rfkill(priv)) {
3198                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3199                 goto done;
3200         }
3201
3202         /*
3203          * mac80211 will not push any more frames for transmit
3204          * until the flush is completed
3205          */
3206         if (drop) {
3207                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3208                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3209                         IWL_ERR(priv, "flush request fail\n");
3210                         goto done;
3211                 }
3212         }
3213         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3214         iwlagn_wait_tx_queue_empty(priv);
3215 done:
3216         mutex_unlock(&priv->shrd->mutex);
3217         IWL_DEBUG_MAC80211(priv, "leave\n");
3218 }
3219
3220 void iwlagn_disable_roc(struct iwl_priv *priv)
3221 {
3222         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3223
3224         lockdep_assert_held(&priv->shrd->mutex);
3225
3226         if (!priv->hw_roc_setup)
3227                 return;
3228
3229         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3230         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3231
3232         priv->hw_roc_channel = NULL;
3233
3234         memset(ctx->staging.node_addr, 0, ETH_ALEN);
3235
3236         iwlagn_commit_rxon(priv, ctx);
3237
3238         ctx->is_active = false;
3239         priv->hw_roc_setup = false;
3240 }
3241
3242 static void iwlagn_disable_roc_work(struct work_struct *work)
3243 {
3244         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3245                                              hw_roc_disable_work.work);
3246
3247         mutex_lock(&priv->shrd->mutex);
3248         iwlagn_disable_roc(priv);
3249         mutex_unlock(&priv->shrd->mutex);
3250 }
3251
3252 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3253                                      struct ieee80211_channel *channel,
3254                                      enum nl80211_channel_type channel_type,
3255                                      int duration)
3256 {
3257         struct iwl_priv *priv = hw->priv;
3258         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3259         int err = 0;
3260
3261         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3262                 return -EOPNOTSUPP;
3263
3264         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
3265                 return -EOPNOTSUPP;
3266
3267         mutex_lock(&priv->shrd->mutex);
3268
3269         /*
3270          * TODO: Remove this hack! Firmware needs to be updated
3271          * to allow longer off-channel periods in scanning for
3272          * this use case, based on a flag (and we'll need an API
3273          * flag in the firmware when it has that).
3274          */
3275         if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
3276                 duration = 80;
3277
3278         if (test_bit(STATUS_SCAN_HW, &priv->shrd->status)) {
3279                 err = -EBUSY;
3280                 goto out;
3281         }
3282
3283         priv->hw_roc_channel = channel;
3284         priv->hw_roc_chantype = channel_type;
3285         priv->hw_roc_duration = duration;
3286         cancel_delayed_work(&priv->hw_roc_disable_work);
3287
3288         if (!ctx->is_active) {
3289                 ctx->is_active = true;
3290                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3291                 memcpy(ctx->staging.node_addr,
3292                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3293                        ETH_ALEN);
3294                 memcpy(ctx->staging.bssid_addr,
3295                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3296                        ETH_ALEN);
3297                 err = iwlagn_commit_rxon(priv, ctx);
3298                 if (err)
3299                         goto out;
3300                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
3301                                              RXON_FILTER_PROMISC_MSK |
3302                                              RXON_FILTER_CTL2HOST_MSK;
3303
3304                 err = iwlagn_commit_rxon(priv, ctx);
3305                 if (err) {
3306                         iwlagn_disable_roc(priv);
3307                         goto out;
3308                 }
3309                 priv->hw_roc_setup = true;
3310         }
3311
3312         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
3313         if (err)
3314                 iwlagn_disable_roc(priv);
3315
3316  out:
3317         mutex_unlock(&priv->shrd->mutex);
3318
3319         return err;
3320 }
3321
3322 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3323 {
3324         struct iwl_priv *priv = hw->priv;
3325
3326         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3327                 return -EOPNOTSUPP;
3328
3329         mutex_lock(&priv->shrd->mutex);
3330         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
3331         iwlagn_disable_roc(priv);
3332         mutex_unlock(&priv->shrd->mutex);
3333
3334         return 0;
3335 }
3336
3337 /*****************************************************************************
3338  *
3339  * driver setup and teardown
3340  *
3341  *****************************************************************************/
3342
3343 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3344 {
3345         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
3346
3347         init_waitqueue_head(&priv->wait_command_queue);
3348
3349         INIT_WORK(&priv->restart, iwl_bg_restart);
3350         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3351         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3352         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3353         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3354         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3355         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
3356                           iwlagn_disable_roc_work);
3357
3358         iwl_setup_scan_deferred_work(priv);
3359
3360         if (priv->cfg->lib->bt_setup_deferred_work)
3361                 priv->cfg->lib->bt_setup_deferred_work(priv);
3362
3363         init_timer(&priv->statistics_periodic);
3364         priv->statistics_periodic.data = (unsigned long)priv;
3365         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3366
3367         init_timer(&priv->ucode_trace);
3368         priv->ucode_trace.data = (unsigned long)priv;
3369         priv->ucode_trace.function = iwl_bg_ucode_trace;
3370
3371         init_timer(&priv->watchdog);
3372         priv->watchdog.data = (unsigned long)priv;
3373         priv->watchdog.function = iwl_bg_watchdog;
3374 }
3375
3376 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3377 {
3378         if (priv->cfg->lib->cancel_deferred_work)
3379                 priv->cfg->lib->cancel_deferred_work(priv);
3380
3381         cancel_work_sync(&priv->run_time_calib_work);
3382         cancel_work_sync(&priv->beacon_update);
3383
3384         iwl_cancel_scan_deferred_work(priv);
3385
3386         cancel_work_sync(&priv->bt_full_concurrency);
3387         cancel_work_sync(&priv->bt_runtime_config);
3388         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3389
3390         del_timer_sync(&priv->statistics_periodic);
3391         del_timer_sync(&priv->ucode_trace);
3392 }
3393
3394 static void iwl_init_hw_rates(struct iwl_priv *priv,
3395                               struct ieee80211_rate *rates)
3396 {
3397         int i;
3398
3399         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3400                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3401                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3402                 rates[i].hw_value_short = i;
3403                 rates[i].flags = 0;
3404                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3405                         /*
3406                          * If CCK != 1M then set short preamble rate flag.
3407                          */
3408                         rates[i].flags |=
3409                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3410                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3411                 }
3412         }
3413 }
3414
3415 static int iwl_init_drv(struct iwl_priv *priv)
3416 {
3417         int ret;
3418
3419         spin_lock_init(&priv->shrd->sta_lock);
3420         spin_lock_init(&priv->hcmd_lock);
3421
3422         mutex_init(&priv->shrd->mutex);
3423
3424         priv->ieee_channels = NULL;
3425         priv->ieee_rates = NULL;
3426         priv->band = IEEE80211_BAND_2GHZ;
3427
3428         priv->iw_mode = NL80211_IFTYPE_STATION;
3429         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3430         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3431         priv->agg_tids_count = 0;
3432
3433         /* initialize force reset */
3434         priv->force_reset[IWL_RF_RESET].reset_duration =
3435                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3436         priv->force_reset[IWL_FW_RESET].reset_duration =
3437                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3438
3439         priv->rx_statistics_jiffies = jiffies;
3440
3441         /* Choose which receivers/antennas to use */
3442         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3443
3444         iwl_init_scan_params(priv);
3445
3446         /* init bt coex */
3447         if (priv->cfg->bt_params &&
3448             priv->cfg->bt_params->advanced_bt_coexist) {
3449                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3450                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3451                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3452                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3453                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3454                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3455         }
3456
3457         ret = iwl_init_channel_map(priv);
3458         if (ret) {
3459                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3460                 goto err;
3461         }
3462
3463         ret = iwl_init_geos(priv);
3464         if (ret) {
3465                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3466                 goto err_free_channel_map;
3467         }
3468         iwl_init_hw_rates(priv, priv->ieee_rates);
3469
3470         return 0;
3471
3472 err_free_channel_map:
3473         iwl_free_channel_map(priv);
3474 err:
3475         return ret;
3476 }
3477
3478 static void iwl_uninit_drv(struct iwl_priv *priv)
3479 {
3480         iwl_calib_free_results(priv);
3481         iwl_free_geos(priv);
3482         iwl_free_channel_map(priv);
3483         kfree(priv->scan_cmd);
3484         kfree(priv->beacon_cmd);
3485 #ifdef CONFIG_IWLWIFI_DEBUGFS
3486         kfree(priv->wowlan_sram);
3487 #endif
3488 }
3489
3490 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3491                            enum ieee80211_rssi_event rssi_event)
3492 {
3493         struct iwl_priv *priv = hw->priv;
3494
3495         mutex_lock(&priv->shrd->mutex);
3496
3497         if (priv->cfg->bt_params &&
3498                         priv->cfg->bt_params->advanced_bt_coexist) {
3499                 if (rssi_event == RSSI_EVENT_LOW)
3500                         priv->bt_enable_pspoll = true;
3501                 else if (rssi_event == RSSI_EVENT_HIGH)
3502                         priv->bt_enable_pspoll = false;
3503
3504                 iwlagn_send_advance_bt_config(priv);
3505         } else {
3506                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3507                                 "ignoring RSSI callback\n");
3508         }
3509
3510         mutex_unlock(&priv->shrd->mutex);
3511 }
3512
3513 struct ieee80211_ops iwlagn_hw_ops = {
3514         .tx = iwlagn_mac_tx,
3515         .start = iwlagn_mac_start,
3516         .stop = iwlagn_mac_stop,
3517 #ifdef CONFIG_PM
3518         .suspend = iwlagn_mac_suspend,
3519         .resume = iwlagn_mac_resume,
3520 #endif
3521         .add_interface = iwl_mac_add_interface,
3522         .remove_interface = iwl_mac_remove_interface,
3523         .change_interface = iwl_mac_change_interface,
3524         .config = iwlagn_mac_config,
3525         .configure_filter = iwlagn_configure_filter,
3526         .set_key = iwlagn_mac_set_key,
3527         .update_tkip_key = iwlagn_mac_update_tkip_key,
3528         .set_rekey_data = iwlagn_mac_set_rekey_data,
3529         .conf_tx = iwl_mac_conf_tx,
3530         .bss_info_changed = iwlagn_bss_info_changed,
3531         .ampdu_action = iwlagn_mac_ampdu_action,
3532         .hw_scan = iwl_mac_hw_scan,
3533         .sta_notify = iwlagn_mac_sta_notify,
3534         .sta_add = iwlagn_mac_sta_add,
3535         .sta_remove = iwl_mac_sta_remove,
3536         .channel_switch = iwlagn_mac_channel_switch,
3537         .flush = iwlagn_mac_flush,
3538         .tx_last_beacon = iwl_mac_tx_last_beacon,
3539         .remain_on_channel = iwl_mac_remain_on_channel,
3540         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3541         .rssi_callback = iwl_mac_rssi_callback,
3542         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3543         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3544 };
3545
3546 static u32 iwl_hw_detect(struct iwl_priv *priv)
3547 {
3548         return iwl_read32(priv, CSR_HW_REV);
3549 }
3550
3551 static int iwl_set_hw_params(struct iwl_priv *priv)
3552 {
3553         hw_params(priv).max_rxq_size = RX_QUEUE_SIZE;
3554         hw_params(priv).max_rxq_log = RX_QUEUE_SIZE_LOG;
3555         if (iwlagn_mod_params.amsdu_size_8K)
3556                 hw_params(priv).rx_page_order =
3557                         get_order(IWL_RX_BUF_SIZE_8K);
3558         else
3559                 hw_params(priv).rx_page_order =
3560                         get_order(IWL_RX_BUF_SIZE_4K);
3561
3562         hw_params(priv).max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3563
3564         if (iwlagn_mod_params.disable_11n)
3565                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3566
3567         /* Device-specific setup */
3568         return priv->cfg->lib->set_hw_params(priv);
3569 }
3570
3571 /* This function both allocates and initializes hw and priv. */
3572 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3573 {
3574         struct iwl_priv *priv;
3575         /* mac80211 allocates memory for this device instance, including
3576          *   space for this driver's private structure */
3577         struct ieee80211_hw *hw;
3578
3579         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3580         if (hw == NULL) {
3581                 pr_err("%s: Can not allocate network device\n",
3582                        cfg->name);
3583                 goto out;
3584         }
3585
3586         priv = hw->priv;
3587         priv->hw = hw;
3588
3589 out:
3590         return hw;
3591 }
3592
3593 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
3594                 struct iwl_cfg *cfg)
3595 {
3596         int err = 0;
3597         struct iwl_priv *priv;
3598         struct ieee80211_hw *hw;
3599         u16 num_mac;
3600         u32 hw_rev;
3601
3602         /************************
3603          * 1. Allocating HW data
3604          ************************/
3605         hw = iwl_alloc_all(cfg);
3606         if (!hw) {
3607                 err = -ENOMEM;
3608                 goto out;
3609         }
3610
3611         priv = hw->priv;
3612         priv->bus = bus;
3613         priv->shrd = &priv->_shrd;
3614         priv->shrd->bus = bus;
3615         priv->shrd->priv = priv;
3616         bus_set_drv_data(priv->bus, priv->shrd);
3617
3618         priv->shrd->trans = trans_ops->alloc(priv->shrd);
3619         if (priv->shrd->trans == NULL) {
3620                 err = -ENOMEM;
3621                 goto out_free_traffic_mem;
3622         }
3623
3624         /* At this point both hw and priv are allocated. */
3625
3626         SET_IEEE80211_DEV(hw, priv->bus->dev);
3627
3628         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3629         priv->cfg = cfg;
3630         priv->inta_mask = CSR_INI_SET_MASK;
3631
3632         /* is antenna coupling more than 35dB ? */
3633         priv->bt_ant_couple_ok =
3634                 (iwlagn_mod_params.ant_coupling >
3635                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3636                         true : false;
3637
3638         /* enable/disable bt channel inhibition */
3639         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3640         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3641                        (priv->bt_ch_announce) ? "On" : "Off");
3642
3643         if (iwl_alloc_traffic_mem(priv))
3644                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3645
3646         /* these spin locks will be used in apm_ops.init and EEPROM access
3647          * we should init now
3648          */
3649         spin_lock_init(&priv->reg_lock);
3650         spin_lock_init(&priv->shrd->lock);
3651
3652         /*
3653          * stop and reset the on-board processor just in case it is in a
3654          * strange state ... like being left stranded by a primary kernel
3655          * and this is now the kdump kernel trying to start up
3656          */
3657         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3658
3659         /***********************
3660          * 3. Read REV register
3661          ***********************/
3662         hw_rev = iwl_hw_detect(priv);
3663         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3664                 priv->cfg->name, hw_rev);
3665
3666         err = iwl_trans_request_irq(trans(priv));
3667         if (err)
3668                 goto out_free_trans;
3669
3670         if (iwl_trans_prepare_card_hw(trans(priv))) {
3671                 err = -EIO;
3672                 IWL_WARN(priv, "Failed, HW not ready\n");
3673                 goto out_free_trans;
3674         }
3675
3676         /*****************
3677          * 4. Read EEPROM
3678          *****************/
3679         /* Read the EEPROM */
3680         err = iwl_eeprom_init(priv, hw_rev);
3681         if (err) {
3682                 IWL_ERR(priv, "Unable to init EEPROM\n");
3683                 goto out_free_trans;
3684         }
3685         err = iwl_eeprom_check_version(priv);
3686         if (err)
3687                 goto out_free_eeprom;
3688
3689         err = iwl_eeprom_check_sku(priv);
3690         if (err)
3691                 goto out_free_eeprom;
3692
3693         /* extract MAC Address */
3694         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3695         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3696         priv->hw->wiphy->addresses = priv->addresses;
3697         priv->hw->wiphy->n_addresses = 1;
3698         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3699         if (num_mac > 1) {
3700                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3701                        ETH_ALEN);
3702                 priv->addresses[1].addr[5]++;
3703                 priv->hw->wiphy->n_addresses++;
3704         }
3705
3706         /************************
3707          * 5. Setup HW constants
3708          ************************/
3709         if (iwl_set_hw_params(priv)) {
3710                 err = -ENOENT;
3711                 IWL_ERR(priv, "failed to set hw parameters\n");
3712                 goto out_free_eeprom;
3713         }
3714
3715         /*******************
3716          * 6. Setup priv
3717          *******************/
3718
3719         err = iwl_init_drv(priv);
3720         if (err)
3721                 goto out_free_eeprom;
3722         /* At this point both hw and priv are initialized. */
3723
3724         /********************
3725          * 7. Setup services
3726          ********************/
3727         iwl_setup_deferred_work(priv);
3728         iwl_setup_rx_handlers(priv);
3729         iwl_testmode_init(priv);
3730
3731         /*********************************************
3732          * 8. Enable interrupts
3733          *********************************************/
3734
3735         iwl_enable_rfkill_int(priv);
3736
3737         /* If platform's RF_KILL switch is NOT set to KILL */
3738         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3739                 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3740         else
3741                 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
3742
3743         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3744                 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
3745
3746         iwl_power_initialize(priv);
3747         iwl_tt_initialize(priv);
3748
3749         init_completion(&priv->firmware_loading_complete);
3750
3751         err = iwl_request_firmware(priv, true);
3752         if (err)
3753                 goto out_destroy_workqueue;
3754
3755         return 0;
3756
3757 out_destroy_workqueue:
3758         destroy_workqueue(priv->shrd->workqueue);
3759         priv->shrd->workqueue = NULL;
3760         iwl_uninit_drv(priv);
3761 out_free_eeprom:
3762         iwl_eeprom_free(priv);
3763 out_free_trans:
3764         iwl_trans_free(trans(priv));
3765 out_free_traffic_mem:
3766         iwl_free_traffic_mem(priv);
3767         ieee80211_free_hw(priv->hw);
3768 out:
3769         return err;
3770 }
3771
3772 void __devexit iwl_remove(struct iwl_priv * priv)
3773 {
3774         unsigned long flags;
3775
3776         wait_for_completion(&priv->firmware_loading_complete);
3777
3778         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3779
3780         iwl_dbgfs_unregister(priv);
3781         sysfs_remove_group(&priv->bus->dev->kobj,
3782                            &iwl_attribute_group);
3783
3784         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3785          * to be called and iwl_down since we are removing the device
3786          * we need to set STATUS_EXIT_PENDING bit.
3787          */
3788         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
3789
3790         iwl_testmode_cleanup(priv);
3791         iwl_leds_exit(priv);
3792
3793         if (priv->mac80211_registered) {
3794                 ieee80211_unregister_hw(priv->hw);
3795                 priv->mac80211_registered = 0;
3796         }
3797
3798         /* Reset to low power before unloading driver. */
3799         iwl_apm_stop(priv);
3800
3801         iwl_tt_exit(priv);
3802
3803         /* make sure we flush any pending irq or
3804          * tasklet for the driver
3805          */
3806         spin_lock_irqsave(&priv->shrd->lock, flags);
3807         iwl_disable_interrupts(priv);
3808         spin_unlock_irqrestore(&priv->shrd->lock, flags);
3809
3810         iwl_trans_sync_irq(trans(priv));
3811
3812         iwl_dealloc_ucode(priv);
3813
3814         iwl_trans_rx_free(trans(priv));
3815         iwl_trans_tx_free(trans(priv));
3816
3817         iwl_eeprom_free(priv);
3818
3819         /*netif_stop_queue(dev); */
3820         flush_workqueue(priv->shrd->workqueue);
3821
3822         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3823          * priv->shrd->workqueue... so we can't take down the workqueue
3824          * until now... */
3825         destroy_workqueue(priv->shrd->workqueue);
3826         priv->shrd->workqueue = NULL;
3827         iwl_free_traffic_mem(priv);
3828
3829         iwl_trans_free(trans(priv));
3830
3831         bus_set_drv_data(priv->bus, NULL);
3832
3833         iwl_uninit_drv(priv);
3834
3835         dev_kfree_skb(priv->beacon_skb);
3836
3837         ieee80211_free_hw(priv->hw);
3838 }
3839
3840
3841 /*****************************************************************************
3842  *
3843  * driver and module entry point
3844  *
3845  *****************************************************************************/
3846 static int __init iwl_init(void)
3847 {
3848
3849         int ret;
3850         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3851         pr_info(DRV_COPYRIGHT "\n");
3852
3853         ret = iwlagn_rate_control_register();
3854         if (ret) {
3855                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3856                 return ret;
3857         }
3858
3859         ret = iwl_pci_register_driver();
3860
3861         if (ret)
3862                 goto error_register;
3863         return ret;
3864
3865 error_register:
3866         iwlagn_rate_control_unregister();
3867         return ret;
3868 }
3869
3870 static void __exit iwl_exit(void)
3871 {
3872         iwl_pci_unregister_driver();
3873         iwlagn_rate_control_unregister();
3874 }
3875
3876 module_exit(iwl_exit);
3877 module_init(iwl_init);
3878
3879 #ifdef CONFIG_IWLWIFI_DEBUG
3880 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3881                    S_IRUGO | S_IWUSR);
3882 MODULE_PARM_DESC(debug, "debug output mask");
3883 #endif
3884
3885 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3886 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3887 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3888 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3889 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3890 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3891 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3892                    int, S_IRUGO);
3893 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3894 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3895 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3896
3897 module_param_named(ucode_alternative,
3898                    iwlagn_mod_params.wanted_ucode_alternative,
3899                    int, S_IRUGO);
3900 MODULE_PARM_DESC(ucode_alternative,
3901                  "specify ucode alternative to use from ucode file");
3902
3903 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3904                    int, S_IRUGO);
3905 MODULE_PARM_DESC(antenna_coupling,
3906                  "specify antenna coupling in dB (defualt: 0 dB)");
3907
3908 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3909                    bool, S_IRUGO);
3910 MODULE_PARM_DESC(bt_ch_inhibition,
3911                  "Disable BT channel inhibition (default: enable)");
3912
3913 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3914 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3915
3916 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3917 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3918
3919 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3920 MODULE_PARM_DESC(wd_disable,
3921                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3922
3923 /*
3924  * set bt_coex_active to true, uCode will do kill/defer
3925  * every time the priority line is asserted (BT is sending signals on the
3926  * priority line in the PCIx).
3927  * set bt_coex_active to false, uCode will ignore the BT activity and
3928  * perform the normal operation
3929  *
3930  * User might experience transmit issue on some platform due to WiFi/BT
3931  * co-exist problem. The possible behaviors are:
3932  *   Able to scan and finding all the available AP
3933  *   Not able to associate with any AP
3934  * On those platforms, WiFi communication can be restored by set
3935  * "bt_coex_active" module parameter to "false"
3936  *
3937  * default: bt_coex_active = true (BT_COEX_ENABLE)
3938  */
3939 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3940                 bool, S_IRUGO);
3941 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3942
3943 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3944 MODULE_PARM_DESC(led_mode, "0=system default, "
3945                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3946
3947 module_param_named(power_save, iwlagn_mod_params.power_save,
3948                 bool, S_IRUGO);
3949 MODULE_PARM_DESC(power_save,
3950                  "enable WiFi power management (default: disable)");
3951
3952 module_param_named(power_level, iwlagn_mod_params.power_level,
3953                 int, S_IRUGO);
3954 MODULE_PARM_DESC(power_level,
3955                  "default power save level (range from 1 - 5, default: 1)");
3956
3957 /*
3958  * For now, keep using power level 1 instead of automatically
3959  * adjusting ...
3960  */
3961 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3962                 bool, S_IRUGO);
3963 MODULE_PARM_DESC(no_sleep_autoadjust,
3964                  "don't automatically adjust sleep level "
3965                  "according to maximum network latency (default: true)");