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->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 trans_send_cmd(&priv->trans, &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->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->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->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->mutex);
 266
 267         if (test_bit(STATUS_EXIT_PENDING, &priv->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->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->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->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->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->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->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->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 = trans_send_cmd_pdu(&priv->trans,
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 = trans_send_cmd_pdu(&priv->trans,
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 trans_send_cmd(&priv->trans, &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 trans_send_cmd_pdu(&priv->trans,
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->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->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 = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1874
1875         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1876          * to prevent rearm timer */
1877         del_timer_sync(&priv->watchdog);
1878
1879         iwl_clear_ucode_stations(priv, NULL);
1880         iwl_dealloc_bcast_stations(priv);
1881         iwl_clear_driver_stations(priv);
1882
1883         /* reset BT coex data */
1884         priv->bt_status = 0;
1885         priv->cur_rssi_ctx = NULL;
1886         priv->bt_is_sco = 0;
1887         if (priv->cfg->bt_params)
1888                 priv->bt_traffic_load =
1889                          priv->cfg->bt_params->bt_init_traffic_load;
1890         else
1891                 priv->bt_traffic_load = 0;
1892         priv->bt_full_concurrent = false;
1893         priv->bt_ci_compliance = 0;
1894
1895         /* Wipe out the EXIT_PENDING status bit if we are not actually
1896          * exiting the module */
1897         if (!exit_pending)
1898                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1899
1900         if (priv->mac80211_registered)
1901                 ieee80211_stop_queues(priv->hw);
1902
1903         /* Clear out all status bits but a few that are stable across reset */
1904         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1905                                 STATUS_RF_KILL_HW |
1906                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1907                                 STATUS_GEO_CONFIGURED |
1908                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1909                                 STATUS_FW_ERROR |
1910                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1911                                 STATUS_EXIT_PENDING;
1912
1913         trans_stop_device(&priv->trans);
1914
1915         dev_kfree_skb(priv->beacon_skb);
1916         priv->beacon_skb = NULL;
1917 }
1918
1919 static void iwl_down(struct iwl_priv *priv)
1920 {
1921         mutex_lock(&priv->mutex);
1922         __iwl_down(priv);
1923         mutex_unlock(&priv->mutex);
1924
1925         iwl_cancel_deferred_work(priv);
1926 }
1927
1928 #define MAX_HW_RESTARTS 5
1929
1930 static int __iwl_up(struct iwl_priv *priv)
1931 {
1932         struct iwl_rxon_context *ctx;
1933         int ret;
1934
1935         lockdep_assert_held(&priv->mutex);
1936
1937         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1938                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1939                 return -EIO;
1940         }
1941
1942         for_each_context(priv, ctx) {
1943                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1944                 if (ret) {
1945                         iwl_dealloc_bcast_stations(priv);
1946                         return ret;
1947                 }
1948         }
1949
1950         ret = iwlagn_run_init_ucode(priv);
1951         if (ret) {
1952                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1953                 goto error;
1954         }
1955
1956         ret = iwlagn_load_ucode_wait_alive(priv,
1957                                            &priv->ucode_rt,
1958                                            IWL_UCODE_REGULAR);
1959         if (ret) {
1960                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1961                 goto error;
1962         }
1963
1964         ret = iwl_alive_start(priv);
1965         if (ret)
1966                 goto error;
1967         return 0;
1968
1969  error:
1970         set_bit(STATUS_EXIT_PENDING, &priv->status);
1971         __iwl_down(priv);
1972         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1973
1974         IWL_ERR(priv, "Unable to initialize device.\n");
1975         return ret;
1976 }
1977
1978
1979 /*****************************************************************************
1980  *
1981  * Workqueue callbacks
1982  *
1983  *****************************************************************************/
1984
1985 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1986 {
1987         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1988                         run_time_calib_work);
1989
1990         mutex_lock(&priv->mutex);
1991
1992         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1993             test_bit(STATUS_SCANNING, &priv->status)) {
1994                 mutex_unlock(&priv->mutex);
1995                 return;
1996         }
1997
1998         if (priv->start_calib) {
1999                 iwl_chain_noise_calibration(priv);
2000                 iwl_sensitivity_calibration(priv);
2001         }
2002
2003         mutex_unlock(&priv->mutex);
2004 }
2005
2006 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2007 {
2008         struct iwl_rxon_context *ctx;
2009         bool bt_full_concurrent;
2010         u8 bt_ci_compliance;
2011         u8 bt_load;
2012         u8 bt_status;
2013         bool bt_is_sco;
2014
2015         lockdep_assert_held(&priv->mutex);
2016
2017         for_each_context(priv, ctx)
2018                 ctx->vif = NULL;
2019         priv->is_open = 0;
2020
2021         /*
2022          * __iwl_down() will clear the BT status variables,
2023          * which is correct, but when we restart we really
2024          * want to keep them so restore them afterwards.
2025          *
2026          * The restart process will later pick them up and
2027          * re-configure the hw when we reconfigure the BT
2028          * command.
2029          */
2030         bt_full_concurrent = priv->bt_full_concurrent;
2031         bt_ci_compliance = priv->bt_ci_compliance;
2032         bt_load = priv->bt_traffic_load;
2033         bt_status = priv->bt_status;
2034         bt_is_sco = priv->bt_is_sco;
2035
2036         __iwl_down(priv);
2037
2038         priv->bt_full_concurrent = bt_full_concurrent;
2039         priv->bt_ci_compliance = bt_ci_compliance;
2040         priv->bt_traffic_load = bt_load;
2041         priv->bt_status = bt_status;
2042         priv->bt_is_sco = bt_is_sco;
2043 }
2044
2045 static void iwl_bg_restart(struct work_struct *data)
2046 {
2047         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2048
2049         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2050                 return;
2051
2052         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2053                 mutex_lock(&priv->mutex);
2054                 iwlagn_prepare_restart(priv);
2055                 mutex_unlock(&priv->mutex);
2056                 iwl_cancel_deferred_work(priv);
2057                 ieee80211_restart_hw(priv->hw);
2058         } else {
2059                 WARN_ON(1);
2060         }
2061 }
2062
2063 /*****************************************************************************
2064  *
2065  * mac80211 entry point functions
2066  *
2067  *****************************************************************************/
2068
2069 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2070         {
2071                 .max = 1,
2072                 .types = BIT(NL80211_IFTYPE_STATION),
2073         },
2074         {
2075                 .max = 1,
2076                 .types = BIT(NL80211_IFTYPE_AP),
2077         },
2078 };
2079
2080 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2081         {
2082                 .max = 2,
2083                 .types = BIT(NL80211_IFTYPE_STATION),
2084         },
2085 };
2086
2087 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2088         {
2089                 .max = 1,
2090                 .types = BIT(NL80211_IFTYPE_STATION),
2091         },
2092         {
2093                 .max = 1,
2094                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2095                          BIT(NL80211_IFTYPE_AP),
2096         },
2097 };
2098
2099 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2100         {
2101                 .max = 2,
2102                 .types = BIT(NL80211_IFTYPE_STATION),
2103         },
2104         {
2105                 .max = 1,
2106                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2107         },
2108 };
2109
2110 static const struct ieee80211_iface_combination
2111 iwlagn_iface_combinations_dualmode[] = {
2112         { .num_different_channels = 1,
2113           .max_interfaces = 2,
2114           .beacon_int_infra_match = true,
2115           .limits = iwlagn_sta_ap_limits,
2116           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2117         },
2118         { .num_different_channels = 1,
2119           .max_interfaces = 2,
2120           .limits = iwlagn_2sta_limits,
2121           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2122         },
2123 };
2124
2125 static const struct ieee80211_iface_combination
2126 iwlagn_iface_combinations_p2p[] = {
2127         { .num_different_channels = 1,
2128           .max_interfaces = 2,
2129           .beacon_int_infra_match = true,
2130           .limits = iwlagn_p2p_sta_go_limits,
2131           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2132         },
2133         { .num_different_channels = 1,
2134           .max_interfaces = 2,
2135           .limits = iwlagn_p2p_2sta_limits,
2136           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2137         },
2138 };
2139
2140 /*
2141  * Not a mac80211 entry point function, but it fits in with all the
2142  * other mac80211 functions grouped here.
2143  */
2144 static int iwl_mac_setup_register(struct iwl_priv *priv,
2145                                   struct iwlagn_ucode_capabilities *capa)
2146 {
2147         int ret;
2148         struct ieee80211_hw *hw = priv->hw;
2149         struct iwl_rxon_context *ctx;
2150
2151         hw->rate_control_algorithm = "iwl-agn-rs";
2152
2153         /* Tell mac80211 our characteristics */
2154         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2155                     IEEE80211_HW_AMPDU_AGGREGATION |
2156                     IEEE80211_HW_NEED_DTIM_PERIOD |
2157                     IEEE80211_HW_SPECTRUM_MGMT |
2158                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2159
2160         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2161
2162         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2163                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2164
2165         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2166                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2167                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2168
2169         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2170                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2171
2172         hw->sta_data_size = sizeof(struct iwl_station_priv);
2173         hw->vif_data_size = sizeof(struct iwl_vif_priv);
2174
2175         for_each_context(priv, ctx) {
2176                 hw->wiphy->interface_modes |= ctx->interface_modes;
2177                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2178         }
2179
2180         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2181
2182         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2183                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2184                 hw->wiphy->n_iface_combinations =
2185                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2186         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2187                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2188                 hw->wiphy->n_iface_combinations =
2189                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2190         }
2191
2192         hw->wiphy->max_remain_on_channel_duration = 1000;
2193
2194         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2195                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
2196                             WIPHY_FLAG_IBSS_RSN;
2197
2198         if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2199                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2200                                           WIPHY_WOWLAN_DISCONNECT |
2201                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2202                                           WIPHY_WOWLAN_RFKILL_RELEASE;
2203                 if (!iwlagn_mod_params.sw_crypto)
2204                         hw->wiphy->wowlan.flags |=
2205                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2206                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2207
2208                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2209                 hw->wiphy->wowlan.pattern_min_len =
2210                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2211                 hw->wiphy->wowlan.pattern_max_len =
2212                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2213         }
2214
2215         if (iwlagn_mod_params.power_save)
2216                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2217         else
2218                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2219
2220         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2221         /* we create the 802.11 header and a zero-length SSID element */
2222         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2223
2224         /* Default value; 4 EDCA QOS priorities */
2225         hw->queues = 4;
2226
2227         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2228
2229         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2230                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2231                         &priv->bands[IEEE80211_BAND_2GHZ];
2232         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2233                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2234                         &priv->bands[IEEE80211_BAND_5GHZ];
2235
2236         iwl_leds_init(priv);
2237
2238         ret = ieee80211_register_hw(priv->hw);
2239         if (ret) {
2240                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2241                 return ret;
2242         }
2243         priv->mac80211_registered = 1;
2244
2245         return 0;
2246 }
2247
2248
2249 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2250 {
2251         struct iwl_priv *priv = hw->priv;
2252         int ret;
2253
2254         IWL_DEBUG_MAC80211(priv, "enter\n");
2255
2256         /* we should be verifying the device is ready to be opened */
2257         mutex_lock(&priv->mutex);
2258         ret = __iwl_up(priv);
2259         mutex_unlock(&priv->mutex);
2260         if (ret)
2261                 return ret;
2262
2263         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2264
2265         /* Now we should be done, and the READY bit should be set. */
2266         if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2267                 ret = -EIO;
2268
2269         iwlagn_led_enable(priv);
2270
2271         priv->is_open = 1;
2272         IWL_DEBUG_MAC80211(priv, "leave\n");
2273         return 0;
2274 }
2275
2276 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2277 {
2278         struct iwl_priv *priv = hw->priv;
2279
2280         IWL_DEBUG_MAC80211(priv, "enter\n");
2281
2282         if (!priv->is_open)
2283                 return;
2284
2285         priv->is_open = 0;
2286
2287         iwl_down(priv);
2288
2289         flush_workqueue(priv->shrd->workqueue);
2290
2291         /* User space software may expect getting rfkill changes
2292          * even if interface is down */
2293         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2294         iwl_enable_rfkill_int(priv);
2295
2296         IWL_DEBUG_MAC80211(priv, "leave\n");
2297 }
2298
2299 #ifdef CONFIG_PM
2300 static int iwlagn_send_patterns(struct iwl_priv *priv,
2301                                 struct cfg80211_wowlan *wowlan)
2302 {
2303         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2304         struct iwl_host_cmd cmd = {
2305                 .id = REPLY_WOWLAN_PATTERNS,
2306                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2307                 .flags = CMD_SYNC,
2308         };
2309         int i, err;
2310
2311         if (!wowlan->n_patterns)
2312                 return 0;
2313
2314         cmd.len[0] = sizeof(*pattern_cmd) +
2315                         wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2316
2317         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2318         if (!pattern_cmd)
2319                 return -ENOMEM;
2320
2321         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2322
2323         for (i = 0; i < wowlan->n_patterns; i++) {
2324                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2325
2326                 memcpy(&pattern_cmd->patterns[i].mask,
2327                         wowlan->patterns[i].mask, mask_len);
2328                 memcpy(&pattern_cmd->patterns[i].pattern,
2329                         wowlan->patterns[i].pattern,
2330                         wowlan->patterns[i].pattern_len);
2331                 pattern_cmd->patterns[i].mask_size = mask_len;
2332                 pattern_cmd->patterns[i].pattern_size =
2333                         wowlan->patterns[i].pattern_len;
2334         }
2335
2336         cmd.data[0] = pattern_cmd;
2337         err = trans_send_cmd(&priv->trans, &cmd);
2338         kfree(pattern_cmd);
2339         return err;
2340 }
2341 #endif
2342
2343 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2344                                       struct ieee80211_vif *vif,
2345                                       struct cfg80211_gtk_rekey_data *data)
2346 {
2347         struct iwl_priv *priv = hw->priv;
2348
2349         if (iwlagn_mod_params.sw_crypto)
2350                 return;
2351
2352         mutex_lock(&priv->mutex);
2353
2354         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2355                 goto out;
2356
2357         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2358         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2359         priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2360         priv->have_rekey_data = true;
2361
2362  out:
2363         mutex_unlock(&priv->mutex);
2364 }
2365
2366 struct wowlan_key_data {
2367         struct iwl_rxon_context *ctx;
2368         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2369         struct iwlagn_wowlan_tkip_params_cmd *tkip;
2370         const u8 *bssid;
2371         bool error, use_rsc_tsc, use_tkip;
2372 };
2373
2374 #ifdef CONFIG_PM
2375 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2376 {
2377         int i;
2378
2379         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2380                 out[i] = cpu_to_le16(p1k[i]);
2381 }
2382
2383 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2384                                        struct ieee80211_vif *vif,
2385                                        struct ieee80211_sta *sta,
2386                                        struct ieee80211_key_conf *key,
2387                                        void *_data)
2388 {
2389         struct iwl_priv *priv = hw->priv;
2390         struct wowlan_key_data *data = _data;
2391         struct iwl_rxon_context *ctx = data->ctx;
2392         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2393         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2394         struct iwlagn_p1k_cache *rx_p1ks;
2395         u8 *rx_mic_key;
2396         struct ieee80211_key_seq seq;
2397         u32 cur_rx_iv32 = 0;
2398         u16 p1k[IWLAGN_P1K_SIZE];
2399         int ret, i;
2400
2401         mutex_lock(&priv->mutex);
2402
2403         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2404              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2405              !sta && !ctx->key_mapping_keys)
2406                 ret = iwl_set_default_wep_key(priv, ctx, key);
2407         else
2408                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2409
2410         if (ret) {
2411                 IWL_ERR(priv, "Error setting key during suspend!\n");
2412                 data->error = true;
2413         }
2414
2415         switch (key->cipher) {
2416         case WLAN_CIPHER_SUITE_TKIP:
2417                 if (sta) {
2418                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2419                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2420
2421                         rx_p1ks = data->tkip->rx_uni;
2422
2423                         ieee80211_get_key_tx_seq(key, &seq);
2424                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2425                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2426
2427                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2428                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2429
2430                         memcpy(data->tkip->mic_keys.tx,
2431                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2432                                IWLAGN_MIC_KEY_SIZE);
2433
2434                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
2435                 } else {
2436                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2437                         rx_p1ks = data->tkip->rx_multi;
2438                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
2439                 }
2440
2441                 /*
2442                  * For non-QoS this relies on the fact that both the uCode and
2443                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
2444                  * for checking the IV in the frames.
2445                  */
2446                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2447                         ieee80211_get_key_rx_seq(key, i, &seq);
2448                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2449                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2450                         /* wrapping isn't allowed, AP must rekey */
2451                         if (seq.tkip.iv32 > cur_rx_iv32)
2452                                 cur_rx_iv32 = seq.tkip.iv32;
2453                 }
2454
2455                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2456                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2457                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2458                                           cur_rx_iv32 + 1, p1k);
2459                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2460
2461                 memcpy(rx_mic_key,
2462                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2463                        IWLAGN_MIC_KEY_SIZE);
2464
2465                 data->use_tkip = true;
2466                 data->use_rsc_tsc = true;
2467                 break;
2468         case WLAN_CIPHER_SUITE_CCMP:
2469                 if (sta) {
2470                         u8 *pn = seq.ccmp.pn;
2471
2472                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2473                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2474
2475                         ieee80211_get_key_tx_seq(key, &seq);
2476                         aes_tx_sc->pn = cpu_to_le64(
2477                                         (u64)pn[5] |
2478                                         ((u64)pn[4] << 8) |
2479                                         ((u64)pn[3] << 16) |
2480                                         ((u64)pn[2] << 24) |
2481                                         ((u64)pn[1] << 32) |
2482                                         ((u64)pn[0] << 40));
2483                 } else
2484                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2485
2486                 /*
2487                  * For non-QoS this relies on the fact that both the uCode and
2488                  * mac80211 use TID 0 for checking the IV in the frames.
2489                  */
2490                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2491                         u8 *pn = seq.ccmp.pn;
2492
2493                         ieee80211_get_key_rx_seq(key, i, &seq);
2494                         aes_sc->pn = cpu_to_le64(
2495                                         (u64)pn[5] |
2496                                         ((u64)pn[4] << 8) |
2497                                         ((u64)pn[3] << 16) |
2498                                         ((u64)pn[2] << 24) |
2499                                         ((u64)pn[1] << 32) |
2500                                         ((u64)pn[0] << 40));
2501                 }
2502                 data->use_rsc_tsc = true;
2503                 break;
2504         }
2505
2506         mutex_unlock(&priv->mutex);
2507 }
2508
2509 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2510                               struct cfg80211_wowlan *wowlan)
2511 {
2512         struct iwl_priv *priv = hw->priv;
2513         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2514         struct iwl_rxon_cmd rxon;
2515         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2516         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2517         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2518         struct wowlan_key_data key_data = {
2519                 .ctx = ctx,
2520                 .bssid = ctx->active.bssid_addr,
2521                 .use_rsc_tsc = false,
2522                 .tkip = &tkip_cmd,
2523                 .use_tkip = false,
2524         };
2525         int ret, i;
2526         u16 seq;
2527
2528         if (WARN_ON(!wowlan))
2529                 return -EINVAL;
2530
2531         mutex_lock(&priv->mutex);
2532
2533         /* Don't attempt WoWLAN when not associated, tear down instead. */
2534         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2535             !iwl_is_associated_ctx(ctx)) {
2536                 ret = 1;
2537                 goto out;
2538         }
2539
2540         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2541         if (!key_data.rsc_tsc) {
2542                 ret = -ENOMEM;
2543                 goto out;
2544         }
2545
2546         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2547
2548         /*
2549          * We know the last used seqno, and the uCode expects to know that
2550          * one, it will increment before TX.
2551          */
2552         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2553         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2554
2555         /*
2556          * For QoS counters, we store the one to use next, so subtract 0x10
2557          * since the uCode will add 0x10 before using the value.
2558          */
2559         for (i = 0; i < 8; i++) {
2560                 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2561                 seq -= 0x10;
2562                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2563         }
2564
2565         if (wowlan->disconnect)
2566                 wakeup_filter_cmd.enabled |=
2567                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2568                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2569         if (wowlan->magic_pkt)
2570                 wakeup_filter_cmd.enabled |=
2571                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2572         if (wowlan->gtk_rekey_failure)
2573                 wakeup_filter_cmd.enabled |=
2574                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2575         if (wowlan->eap_identity_req)
2576                 wakeup_filter_cmd.enabled |=
2577                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2578         if (wowlan->four_way_handshake)
2579                 wakeup_filter_cmd.enabled |=
2580                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2581         if (wowlan->rfkill_release)
2582                 wakeup_filter_cmd.enabled |=
2583                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2584         if (wowlan->n_patterns)
2585                 wakeup_filter_cmd.enabled |=
2586                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2587
2588         iwl_scan_cancel_timeout(priv, 200);
2589
2590         memcpy(&rxon, &ctx->active, sizeof(rxon));
2591
2592         trans_stop_device(&priv->trans);
2593
2594         priv->wowlan = true;
2595
2596         ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2597                                            IWL_UCODE_WOWLAN);
2598         if (ret)
2599                 goto error;
2600
2601         /* now configure WoWLAN ucode */
2602         ret = iwl_alive_start(priv);
2603         if (ret)
2604                 goto error;
2605
2606         memcpy(&ctx->staging, &rxon, sizeof(rxon));
2607         ret = iwlagn_commit_rxon(priv, ctx);
2608         if (ret)
2609                 goto error;
2610
2611         ret = iwl_power_update_mode(priv, true);
2612         if (ret)
2613                 goto error;
2614
2615         if (!iwlagn_mod_params.sw_crypto) {
2616                 /* mark all keys clear */
2617                 priv->ucode_key_table = 0;
2618                 ctx->key_mapping_keys = 0;
2619
2620                 /*
2621                  * This needs to be unlocked due to lock ordering
2622                  * constraints. Since we're in the suspend path
2623                  * that isn't really a problem though.
2624                  */
2625                 mutex_unlock(&priv->mutex);
2626                 ieee80211_iter_keys(priv->hw, ctx->vif,
2627                                     iwlagn_wowlan_program_keys,
2628                                     &key_data);
2629                 mutex_lock(&priv->mutex);
2630                 if (key_data.error) {
2631                         ret = -EIO;
2632                         goto error;
2633                 }
2634
2635                 if (key_data.use_rsc_tsc) {
2636                         struct iwl_host_cmd rsc_tsc_cmd = {
2637                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2638                                 .flags = CMD_SYNC,
2639                                 .data[0] = key_data.rsc_tsc,
2640                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2641                                 .len[0] = sizeof(*key_data.rsc_tsc),
2642                         };
2643
2644                         ret = trans_send_cmd(&priv->trans, &rsc_tsc_cmd);
2645                         if (ret)
2646                                 goto error;
2647                 }
2648
2649                 if (key_data.use_tkip) {
2650                         ret = trans_send_cmd_pdu(&priv->trans,
2651                                                  REPLY_WOWLAN_TKIP_PARAMS,
2652                                                  CMD_SYNC, sizeof(tkip_cmd),
2653                                                  &tkip_cmd);
2654                         if (ret)
2655                                 goto error;
2656                 }
2657
2658                 if (priv->have_rekey_data) {
2659                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2660                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2661                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2662                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2663                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2664                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
2665
2666                         ret = trans_send_cmd_pdu(&priv->trans,
2667                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
2668                                                  CMD_SYNC, sizeof(kek_kck_cmd),
2669                                                  &kek_kck_cmd);
2670                         if (ret)
2671                                 goto error;
2672                 }
2673         }
2674
2675         ret = trans_send_cmd_pdu(&priv->trans, REPLY_WOWLAN_WAKEUP_FILTER,
2676                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
2677                                  &wakeup_filter_cmd);
2678         if (ret)
2679                 goto error;
2680
2681         ret = iwlagn_send_patterns(priv, wowlan);
2682         if (ret)
2683                 goto error;
2684
2685         device_set_wakeup_enable(priv->bus->dev, true);
2686
2687         /* Now let the ucode operate on its own */
2688         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2689                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2690
2691         goto out;
2692
2693  error:
2694         priv->wowlan = false;
2695         iwlagn_prepare_restart(priv);
2696         ieee80211_restart_hw(priv->hw);
2697  out:
2698         mutex_unlock(&priv->mutex);
2699         kfree(key_data.rsc_tsc);
2700         return ret;
2701 }
2702
2703 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2704 {
2705         struct iwl_priv *priv = hw->priv;
2706         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2707         struct ieee80211_vif *vif;
2708         unsigned long flags;
2709         u32 base, status = 0xffffffff;
2710         int ret = -EIO;
2711
2712         mutex_lock(&priv->mutex);
2713
2714         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2715                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2716
2717         base = priv->device_pointers.error_event_table;
2718         if (iwlagn_hw_valid_rtc_data_addr(base)) {
2719                 spin_lock_irqsave(&priv->reg_lock, flags);
2720                 ret = iwl_grab_nic_access_silent(priv);
2721                 if (ret == 0) {
2722                         iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2723                         status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2724                         iwl_release_nic_access(priv);
2725                 }
2726                 spin_unlock_irqrestore(&priv->reg_lock, flags);
2727
2728 #ifdef CONFIG_IWLWIFI_DEBUGFS
2729                 if (ret == 0) {
2730                         if (!priv->wowlan_sram)
2731                                 priv->wowlan_sram =
2732                                         kzalloc(priv->ucode_wowlan.data.len,
2733                                                 GFP_KERNEL);
2734
2735                         if (priv->wowlan_sram)
2736                                 _iwl_read_targ_mem_words(
2737                                         priv, 0x800000, priv->wowlan_sram,
2738                                         priv->ucode_wowlan.data.len / 4);
2739                 }
2740 #endif
2741         }
2742
2743         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2744         vif = ctx->vif;
2745
2746         priv->wowlan = false;
2747
2748         device_set_wakeup_enable(priv->bus->dev, false);
2749
2750         iwlagn_prepare_restart(priv);
2751
2752         memset((void *)&ctx->active, 0, sizeof(ctx->active));
2753         iwl_connection_init_rx_config(priv, ctx);
2754         iwlagn_set_rxon_chain(priv, ctx);
2755
2756         mutex_unlock(&priv->mutex);
2757
2758         ieee80211_resume_disconnect(vif);
2759
2760         return 1;
2761 }
2762 #endif
2763
2764 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2765 {
2766         struct iwl_priv *priv = hw->priv;
2767
2768         IWL_DEBUG_MACDUMP(priv, "enter\n");
2769
2770         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2771                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2772
2773         if (iwlagn_tx_skb(priv, skb))
2774                 dev_kfree_skb_any(skb);
2775
2776         IWL_DEBUG_MACDUMP(priv, "leave\n");
2777 }
2778
2779 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2780                                        struct ieee80211_vif *vif,
2781                                        struct ieee80211_key_conf *keyconf,
2782                                        struct ieee80211_sta *sta,
2783                                        u32 iv32, u16 *phase1key)
2784 {
2785         struct iwl_priv *priv = hw->priv;
2786
2787         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2788 }
2789
2790 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2791                               struct ieee80211_vif *vif,
2792                               struct ieee80211_sta *sta,
2793                               struct ieee80211_key_conf *key)
2794 {
2795         struct iwl_priv *priv = hw->priv;
2796         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2797         struct iwl_rxon_context *ctx = vif_priv->ctx;
2798         int ret;
2799         bool is_default_wep_key = false;
2800
2801         IWL_DEBUG_MAC80211(priv, "enter\n");
2802
2803         if (iwlagn_mod_params.sw_crypto) {
2804                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2805                 return -EOPNOTSUPP;
2806         }
2807
2808         /*
2809          * We could program these keys into the hardware as well, but we
2810          * don't expect much multicast traffic in IBSS and having keys
2811          * for more stations is probably more useful.
2812          *
2813          * Mark key TX-only and return 0.
2814          */
2815         if (vif->type == NL80211_IFTYPE_ADHOC &&
2816             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2817                 key->hw_key_idx = WEP_INVALID_OFFSET;
2818                 return 0;
2819         }
2820
2821         /* If they key was TX-only, accept deletion */
2822         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2823                 return 0;
2824
2825         mutex_lock(&priv->mutex);
2826         iwl_scan_cancel_timeout(priv, 100);
2827
2828         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2829
2830         /*
2831          * If we are getting WEP group key and we didn't receive any key mapping
2832          * so far, we are in legacy wep mode (group key only), otherwise we are
2833          * in 1X mode.
2834          * In legacy wep mode, we use another host command to the uCode.
2835          */
2836         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2837              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2838                 if (cmd == SET_KEY)
2839                         is_default_wep_key = !ctx->key_mapping_keys;
2840                 else
2841                         is_default_wep_key =
2842                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2843         }
2844
2845
2846         switch (cmd) {
2847         case SET_KEY:
2848                 if (is_default_wep_key) {
2849                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2850                         break;
2851                 }
2852                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2853                 if (ret) {
2854                         /*
2855                          * can't add key for RX, but we don't need it
2856                          * in the device for TX so still return 0
2857                          */
2858                         ret = 0;
2859                         key->hw_key_idx = WEP_INVALID_OFFSET;
2860                 }
2861
2862                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2863                 break;
2864         case DISABLE_KEY:
2865                 if (is_default_wep_key)
2866                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2867                 else
2868                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2869
2870                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2871                 break;
2872         default:
2873                 ret = -EINVAL;
2874         }
2875
2876         mutex_unlock(&priv->mutex);
2877         IWL_DEBUG_MAC80211(priv, "leave\n");
2878
2879         return ret;
2880 }
2881
2882 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2883                                    struct ieee80211_vif *vif,
2884                                    enum ieee80211_ampdu_mlme_action action,
2885                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2886                                    u8 buf_size)
2887 {
2888         struct iwl_priv *priv = hw->priv;
2889         int ret = -EINVAL;
2890         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2891
2892         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2893                      sta->addr, tid);
2894
2895         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2896                 return -EACCES;
2897
2898         mutex_lock(&priv->mutex);
2899
2900         switch (action) {
2901         case IEEE80211_AMPDU_RX_START:
2902                 IWL_DEBUG_HT(priv, "start Rx\n");
2903                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2904                 break;
2905         case IEEE80211_AMPDU_RX_STOP:
2906                 IWL_DEBUG_HT(priv, "stop Rx\n");
2907                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2908                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2909                         ret = 0;
2910                 break;
2911         case IEEE80211_AMPDU_TX_START:
2912                 IWL_DEBUG_HT(priv, "start Tx\n");
2913                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2914                 if (ret == 0) {
2915                         priv->agg_tids_count++;
2916                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2917                                      priv->agg_tids_count);
2918                 }
2919                 break;
2920         case IEEE80211_AMPDU_TX_STOP:
2921                 IWL_DEBUG_HT(priv, "stop Tx\n");
2922                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2923                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2924                         priv->agg_tids_count--;
2925                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2926                                      priv->agg_tids_count);
2927                 }
2928                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2929                         ret = 0;
2930                 if (priv->cfg->ht_params &&
2931                     priv->cfg->ht_params->use_rts_for_aggregation) {
2932                         /*
2933                          * switch off RTS/CTS if it was previously enabled
2934                          */
2935                         sta_priv->lq_sta.lq.general_params.flags &=
2936                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2937                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2938                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2939                 }
2940                 break;
2941         case IEEE80211_AMPDU_TX_OPERATIONAL:
2942                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2943
2944                 trans_txq_agg_setup(&priv->trans, iwl_sta_id(sta), tid,
2945                                 buf_size);
2946
2947                 /*
2948                  * If the limit is 0, then it wasn't initialised yet,
2949                  * use the default. We can do that since we take the
2950                  * minimum below, and we don't want to go above our
2951                  * default due to hardware restrictions.
2952                  */
2953                 if (sta_priv->max_agg_bufsize == 0)
2954                         sta_priv->max_agg_bufsize =
2955                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2956
2957                 /*
2958                  * Even though in theory the peer could have different
2959                  * aggregation reorder buffer sizes for different sessions,
2960                  * our ucode doesn't allow for that and has a global limit
2961                  * for each station. Therefore, use the minimum of all the
2962                  * aggregation sessions and our default value.
2963                  */
2964                 sta_priv->max_agg_bufsize =
2965                         min(sta_priv->max_agg_bufsize, buf_size);
2966
2967                 if (priv->cfg->ht_params &&
2968                     priv->cfg->ht_params->use_rts_for_aggregation) {
2969                         /*
2970                          * switch to RTS/CTS if it is the prefer protection
2971                          * method for HT traffic
2972                          */
2973
2974                         sta_priv->lq_sta.lq.general_params.flags |=
2975                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2976                 }
2977
2978                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2979                         sta_priv->max_agg_bufsize;
2980
2981                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2982                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2983
2984                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2985                          sta->addr, tid);
2986                 ret = 0;
2987                 break;
2988         }
2989         mutex_unlock(&priv->mutex);
2990
2991         return ret;
2992 }
2993
2994 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2995                               struct ieee80211_vif *vif,
2996                               struct ieee80211_sta *sta)
2997 {
2998         struct iwl_priv *priv = hw->priv;
2999         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3000         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3001         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3002         int ret;
3003         u8 sta_id;
3004
3005         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3006                         sta->addr);
3007         mutex_lock(&priv->mutex);
3008         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3009                         sta->addr);
3010         sta_priv->common.sta_id = IWL_INVALID_STATION;
3011
3012         atomic_set(&sta_priv->pending_frames, 0);
3013         if (vif->type == NL80211_IFTYPE_AP)
3014                 sta_priv->client = true;
3015
3016         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3017                                      is_ap, sta, &sta_id);
3018         if (ret) {
3019                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3020                         sta->addr, ret);
3021                 /* Should we return success if return code is EEXIST ? */
3022                 mutex_unlock(&priv->mutex);
3023                 return ret;
3024         }
3025
3026         sta_priv->common.sta_id = sta_id;
3027
3028         /* Initialize rate scaling */
3029         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3030                        sta->addr);
3031         iwl_rs_rate_init(priv, sta, sta_id);
3032         mutex_unlock(&priv->mutex);
3033
3034         return 0;
3035 }
3036
3037 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3038                                 struct ieee80211_channel_switch *ch_switch)
3039 {
3040         struct iwl_priv *priv = hw->priv;
3041         const struct iwl_channel_info *ch_info;
3042         struct ieee80211_conf *conf = &hw->conf;
3043         struct ieee80211_channel *channel = ch_switch->channel;
3044         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3045         /*
3046          * MULTI-FIXME
3047          * When we add support for multiple interfaces, we need to
3048          * revisit this. The channel switch command in the device
3049          * only affects the BSS context, but what does that really
3050          * mean? And what if we get a CSA on the second interface?
3051          * This needs a lot of work.
3052          */
3053         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3054         u16 ch;
3055
3056         IWL_DEBUG_MAC80211(priv, "enter\n");
3057
3058         mutex_lock(&priv->mutex);
3059
3060         if (iwl_is_rfkill(priv))
3061                 goto out;
3062
3063         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3064             test_bit(STATUS_SCANNING, &priv->status) ||
3065             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
3066                 goto out;
3067
3068         if (!iwl_is_associated_ctx(ctx))
3069                 goto out;
3070
3071         if (!priv->cfg->lib->set_channel_switch)
3072                 goto out;
3073
3074         ch = channel->hw_value;
3075         if (le16_to_cpu(ctx->active.channel) == ch)
3076                 goto out;
3077
3078         ch_info = iwl_get_channel_info(priv, channel->band, ch);
3079         if (!is_channel_valid(ch_info)) {
3080                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3081                 goto out;
3082         }
3083
3084         spin_lock_irq(&priv->lock);
3085
3086         priv->current_ht_config.smps = conf->smps_mode;
3087
3088         /* Configure HT40 channels */
3089         ctx->ht.enabled = conf_is_ht(conf);
3090         if (ctx->ht.enabled) {
3091                 if (conf_is_ht40_minus(conf)) {
3092                         ctx->ht.extension_chan_offset =
3093                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3094                         ctx->ht.is_40mhz = true;
3095                 } else if (conf_is_ht40_plus(conf)) {
3096                         ctx->ht.extension_chan_offset =
3097                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3098                         ctx->ht.is_40mhz = true;
3099                 } else {
3100                         ctx->ht.extension_chan_offset =
3101                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3102                         ctx->ht.is_40mhz = false;
3103                 }
3104         } else
3105                 ctx->ht.is_40mhz = false;
3106
3107         if ((le16_to_cpu(ctx->staging.channel) != ch))
3108                 ctx->staging.flags = 0;
3109
3110         iwl_set_rxon_channel(priv, channel, ctx);
3111         iwl_set_rxon_ht(priv, ht_conf);
3112         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3113
3114         spin_unlock_irq(&priv->lock);
3115
3116         iwl_set_rate(priv);
3117         /*
3118          * at this point, staging_rxon has the
3119          * configuration for channel switch
3120          */
3121         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3122         priv->switch_channel = cpu_to_le16(ch);
3123         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
3124                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3125                 priv->switch_channel = 0;
3126                 ieee80211_chswitch_done(ctx->vif, false);
3127         }
3128
3129 out:
3130         mutex_unlock(&priv->mutex);
3131         IWL_DEBUG_MAC80211(priv, "leave\n");
3132 }
3133
3134 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3135                                     unsigned int changed_flags,
3136                                     unsigned int *total_flags,
3137                                     u64 multicast)
3138 {
3139         struct iwl_priv *priv = hw->priv;
3140         __le32 filter_or = 0, filter_nand = 0;
3141         struct iwl_rxon_context *ctx;
3142
3143 #define CHK(test, flag) do { \
3144         if (*total_flags & (test))              \
3145                 filter_or |= (flag);            \
3146         else                                    \
3147                 filter_nand |= (flag);          \
3148         } while (0)
3149
3150         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3151                         changed_flags, *total_flags);
3152
3153         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3154         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3155         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3156         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3157
3158 #undef CHK
3159
3160         mutex_lock(&priv->mutex);
3161
3162         for_each_context(priv, ctx) {
3163                 ctx->staging.filter_flags &= ~filter_nand;
3164                 ctx->staging.filter_flags |= filter_or;
3165
3166                 /*
3167                  * Not committing directly because hardware can perform a scan,
3168                  * but we'll eventually commit the filter flags change anyway.
3169                  */
3170         }
3171
3172         mutex_unlock(&priv->mutex);
3173
3174         /*
3175          * Receiving all multicast frames is always enabled by the
3176          * default flags setup in iwl_connection_init_rx_config()
3177          * since we currently do not support programming multicast
3178          * filters into the device.
3179          */
3180         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3181                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3182 }
3183
3184 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3185 {
3186         struct iwl_priv *priv = hw->priv;
3187
3188         mutex_lock(&priv->mutex);
3189         IWL_DEBUG_MAC80211(priv, "enter\n");
3190
3191         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3192                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3193                 goto done;
3194         }
3195         if (iwl_is_rfkill(priv)) {
3196                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3197                 goto done;
3198         }
3199
3200         /*
3201          * mac80211 will not push any more frames for transmit
3202          * until the flush is completed
3203          */
3204         if (drop) {
3205                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3206                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3207                         IWL_ERR(priv, "flush request fail\n");
3208                         goto done;
3209                 }
3210         }
3211         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3212         iwlagn_wait_tx_queue_empty(priv);
3213 done:
3214         mutex_unlock(&priv->mutex);
3215         IWL_DEBUG_MAC80211(priv, "leave\n");
3216 }
3217
3218 void iwlagn_disable_roc(struct iwl_priv *priv)
3219 {
3220         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3221
3222         lockdep_assert_held(&priv->mutex);
3223
3224         if (!priv->hw_roc_setup)
3225                 return;
3226
3227         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3228         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3229
3230         priv->hw_roc_channel = NULL;
3231
3232         memset(ctx->staging.node_addr, 0, ETH_ALEN);
3233
3234         iwlagn_commit_rxon(priv, ctx);
3235
3236         ctx->is_active = false;
3237         priv->hw_roc_setup = false;
3238 }
3239
3240 static void iwlagn_disable_roc_work(struct work_struct *work)
3241 {
3242         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3243                                              hw_roc_disable_work.work);
3244
3245         mutex_lock(&priv->mutex);
3246         iwlagn_disable_roc(priv);
3247         mutex_unlock(&priv->mutex);
3248 }
3249
3250 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3251                                      struct ieee80211_channel *channel,
3252                                      enum nl80211_channel_type channel_type,
3253                                      int duration)
3254 {
3255         struct iwl_priv *priv = hw->priv;
3256         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3257         int err = 0;
3258
3259         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3260                 return -EOPNOTSUPP;
3261
3262         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
3263                 return -EOPNOTSUPP;
3264
3265         mutex_lock(&priv->mutex);
3266
3267         /*
3268          * TODO: Remove this hack! Firmware needs to be updated
3269          * to allow longer off-channel periods in scanning for
3270          * this use case, based on a flag (and we'll need an API
3271          * flag in the firmware when it has that).
3272          */
3273         if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
3274                 duration = 80;
3275
3276         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3277                 err = -EBUSY;
3278                 goto out;
3279         }
3280
3281         priv->hw_roc_channel = channel;
3282         priv->hw_roc_chantype = channel_type;
3283         priv->hw_roc_duration = duration;
3284         cancel_delayed_work(&priv->hw_roc_disable_work);
3285
3286         if (!ctx->is_active) {
3287                 ctx->is_active = true;
3288                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3289                 memcpy(ctx->staging.node_addr,
3290                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3291                        ETH_ALEN);
3292                 memcpy(ctx->staging.bssid_addr,
3293                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3294                        ETH_ALEN);
3295                 err = iwlagn_commit_rxon(priv, ctx);
3296                 if (err)
3297                         goto out;
3298                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
3299                                              RXON_FILTER_PROMISC_MSK |
3300                                              RXON_FILTER_CTL2HOST_MSK;
3301
3302                 err = iwlagn_commit_rxon(priv, ctx);
3303                 if (err) {
3304                         iwlagn_disable_roc(priv);
3305                         goto out;
3306                 }
3307                 priv->hw_roc_setup = true;
3308         }
3309
3310         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
3311         if (err)
3312                 iwlagn_disable_roc(priv);
3313
3314  out:
3315         mutex_unlock(&priv->mutex);
3316
3317         return err;
3318 }
3319
3320 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3321 {
3322         struct iwl_priv *priv = hw->priv;
3323
3324         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3325                 return -EOPNOTSUPP;
3326
3327         mutex_lock(&priv->mutex);
3328         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
3329         iwlagn_disable_roc(priv);
3330         mutex_unlock(&priv->mutex);
3331
3332         return 0;
3333 }
3334
3335 /*****************************************************************************
3336  *
3337  * driver setup and teardown
3338  *
3339  *****************************************************************************/
3340
3341 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3342 {
3343         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
3344
3345         init_waitqueue_head(&priv->wait_command_queue);
3346
3347         INIT_WORK(&priv->restart, iwl_bg_restart);
3348         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3349         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3350         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3351         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3352         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3353         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
3354                           iwlagn_disable_roc_work);
3355
3356         iwl_setup_scan_deferred_work(priv);
3357
3358         if (priv->cfg->lib->bt_setup_deferred_work)
3359                 priv->cfg->lib->bt_setup_deferred_work(priv);
3360
3361         init_timer(&priv->statistics_periodic);
3362         priv->statistics_periodic.data = (unsigned long)priv;
3363         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3364
3365         init_timer(&priv->ucode_trace);
3366         priv->ucode_trace.data = (unsigned long)priv;
3367         priv->ucode_trace.function = iwl_bg_ucode_trace;
3368
3369         init_timer(&priv->watchdog);
3370         priv->watchdog.data = (unsigned long)priv;
3371         priv->watchdog.function = iwl_bg_watchdog;
3372 }
3373
3374 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3375 {
3376         if (priv->cfg->lib->cancel_deferred_work)
3377                 priv->cfg->lib->cancel_deferred_work(priv);
3378
3379         cancel_work_sync(&priv->run_time_calib_work);
3380         cancel_work_sync(&priv->beacon_update);
3381
3382         iwl_cancel_scan_deferred_work(priv);
3383
3384         cancel_work_sync(&priv->bt_full_concurrency);
3385         cancel_work_sync(&priv->bt_runtime_config);
3386         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3387
3388         del_timer_sync(&priv->statistics_periodic);
3389         del_timer_sync(&priv->ucode_trace);
3390 }
3391
3392 static void iwl_init_hw_rates(struct iwl_priv *priv,
3393                               struct ieee80211_rate *rates)
3394 {
3395         int i;
3396
3397         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3398                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3399                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3400                 rates[i].hw_value_short = i;
3401                 rates[i].flags = 0;
3402                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3403                         /*
3404                          * If CCK != 1M then set short preamble rate flag.
3405                          */
3406                         rates[i].flags |=
3407                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3408                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3409                 }
3410         }
3411 }
3412
3413 static int iwl_init_drv(struct iwl_priv *priv)
3414 {
3415         int ret;
3416
3417         spin_lock_init(&priv->sta_lock);
3418         spin_lock_init(&priv->hcmd_lock);
3419
3420         mutex_init(&priv->mutex);
3421
3422         priv->ieee_channels = NULL;
3423         priv->ieee_rates = NULL;
3424         priv->band = IEEE80211_BAND_2GHZ;
3425
3426         priv->iw_mode = NL80211_IFTYPE_STATION;
3427         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3428         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3429         priv->agg_tids_count = 0;
3430
3431         /* initialize force reset */
3432         priv->force_reset[IWL_RF_RESET].reset_duration =
3433                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3434         priv->force_reset[IWL_FW_RESET].reset_duration =
3435                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3436
3437         priv->rx_statistics_jiffies = jiffies;
3438
3439         /* Choose which receivers/antennas to use */
3440         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3441
3442         iwl_init_scan_params(priv);
3443
3444         /* init bt coex */
3445         if (priv->cfg->bt_params &&
3446             priv->cfg->bt_params->advanced_bt_coexist) {
3447                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3448                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3449                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3450                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3451                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3452                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3453         }
3454
3455         ret = iwl_init_channel_map(priv);
3456         if (ret) {
3457                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3458                 goto err;
3459         }
3460
3461         ret = iwl_init_geos(priv);
3462         if (ret) {
3463                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3464                 goto err_free_channel_map;
3465         }
3466         iwl_init_hw_rates(priv, priv->ieee_rates);
3467
3468         return 0;
3469
3470 err_free_channel_map:
3471         iwl_free_channel_map(priv);
3472 err:
3473         return ret;
3474 }
3475
3476 static void iwl_uninit_drv(struct iwl_priv *priv)
3477 {
3478         iwl_calib_free_results(priv);
3479         iwl_free_geos(priv);
3480         iwl_free_channel_map(priv);
3481         kfree(priv->scan_cmd);
3482         kfree(priv->beacon_cmd);
3483 #ifdef CONFIG_IWLWIFI_DEBUGFS
3484         kfree(priv->wowlan_sram);
3485 #endif
3486 }
3487
3488 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3489                            enum ieee80211_rssi_event rssi_event)
3490 {
3491         struct iwl_priv *priv = hw->priv;
3492
3493         mutex_lock(&priv->mutex);
3494
3495         if (priv->cfg->bt_params &&
3496                         priv->cfg->bt_params->advanced_bt_coexist) {
3497                 if (rssi_event == RSSI_EVENT_LOW)
3498                         priv->bt_enable_pspoll = true;
3499                 else if (rssi_event == RSSI_EVENT_HIGH)
3500                         priv->bt_enable_pspoll = false;
3501
3502                 iwlagn_send_advance_bt_config(priv);
3503         } else {
3504                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3505                                 "ignoring RSSI callback\n");
3506         }
3507
3508         mutex_unlock(&priv->mutex);
3509 }
3510
3511 struct ieee80211_ops iwlagn_hw_ops = {
3512         .tx = iwlagn_mac_tx,
3513         .start = iwlagn_mac_start,
3514         .stop = iwlagn_mac_stop,
3515 #ifdef CONFIG_PM
3516         .suspend = iwlagn_mac_suspend,
3517         .resume = iwlagn_mac_resume,
3518 #endif
3519         .add_interface = iwl_mac_add_interface,
3520         .remove_interface = iwl_mac_remove_interface,
3521         .change_interface = iwl_mac_change_interface,
3522         .config = iwlagn_mac_config,
3523         .configure_filter = iwlagn_configure_filter,
3524         .set_key = iwlagn_mac_set_key,
3525         .update_tkip_key = iwlagn_mac_update_tkip_key,
3526         .set_rekey_data = iwlagn_mac_set_rekey_data,
3527         .conf_tx = iwl_mac_conf_tx,
3528         .bss_info_changed = iwlagn_bss_info_changed,
3529         .ampdu_action = iwlagn_mac_ampdu_action,
3530         .hw_scan = iwl_mac_hw_scan,
3531         .sta_notify = iwlagn_mac_sta_notify,
3532         .sta_add = iwlagn_mac_sta_add,
3533         .sta_remove = iwl_mac_sta_remove,
3534         .channel_switch = iwlagn_mac_channel_switch,
3535         .flush = iwlagn_mac_flush,
3536         .tx_last_beacon = iwl_mac_tx_last_beacon,
3537         .remain_on_channel = iwl_mac_remain_on_channel,
3538         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3539         .rssi_callback = iwl_mac_rssi_callback,
3540         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3541         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3542 };
3543
3544 static u32 iwl_hw_detect(struct iwl_priv *priv)
3545 {
3546         return iwl_read32(priv, CSR_HW_REV);
3547 }
3548
3549 static int iwl_set_hw_params(struct iwl_priv *priv)
3550 {
3551         hw_params(priv).max_rxq_size = RX_QUEUE_SIZE;
3552         hw_params(priv).max_rxq_log = RX_QUEUE_SIZE_LOG;
3553         if (iwlagn_mod_params.amsdu_size_8K)
3554                 hw_params(priv).rx_page_order =
3555                         get_order(IWL_RX_BUF_SIZE_8K);
3556         else
3557                 hw_params(priv).rx_page_order =
3558                         get_order(IWL_RX_BUF_SIZE_4K);
3559
3560         hw_params(priv).max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3561
3562         if (iwlagn_mod_params.disable_11n)
3563                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3564
3565         /* Device-specific setup */
3566         return priv->cfg->lib->set_hw_params(priv);
3567 }
3568
3569 /* This function both allocates and initializes hw and priv. */
3570 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3571 {
3572         struct iwl_priv *priv;
3573         /* mac80211 allocates memory for this device instance, including
3574          *   space for this driver's private structure */
3575         struct ieee80211_hw *hw;
3576
3577         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3578         if (hw == NULL) {
3579                 pr_err("%s: Can not allocate network device\n",
3580                        cfg->name);
3581                 goto out;
3582         }
3583
3584         priv = hw->priv;
3585         priv->hw = hw;
3586
3587 out:
3588         return hw;
3589 }
3590
3591 int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
3592 {
3593         int err = 0;
3594         struct iwl_priv *priv;
3595         struct ieee80211_hw *hw;
3596         u16 num_mac;
3597         u32 hw_rev;
3598
3599         /************************
3600          * 1. Allocating HW data
3601          ************************/
3602         hw = iwl_alloc_all(cfg);
3603         if (!hw) {
3604                 err = -ENOMEM;
3605                 goto out;
3606         }
3607
3608         priv = hw->priv;
3609         priv->bus = bus;
3610         priv->shrd = &priv->_shrd;
3611         priv->shrd->bus = bus;
3612         priv->shrd->priv = priv;
3613         bus_set_drv_data(priv->bus, priv->shrd);
3614
3615         /* At this point both hw and priv are allocated. */
3616
3617         SET_IEEE80211_DEV(hw, priv->bus->dev);
3618
3619         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3620         priv->cfg = cfg;
3621         priv->inta_mask = CSR_INI_SET_MASK;
3622
3623         /* is antenna coupling more than 35dB ? */
3624         priv->bt_ant_couple_ok =
3625                 (iwlagn_mod_params.ant_coupling >
3626                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3627                         true : false;
3628
3629         /* enable/disable bt channel inhibition */
3630         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
3631         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3632                        (priv->bt_ch_announce) ? "On" : "Off");
3633
3634         if (iwl_alloc_traffic_mem(priv))
3635                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3636
3637         /* these spin locks will be used in apm_ops.init and EEPROM access
3638          * we should init now
3639          */
3640         spin_lock_init(&priv->reg_lock);
3641         spin_lock_init(&priv->lock);
3642
3643         /*
3644          * stop and reset the on-board processor just in case it is in a
3645          * strange state ... like being left stranded by a primary kernel
3646          * and this is now the kdump kernel trying to start up
3647          */
3648         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3649
3650         /***********************
3651          * 3. Read REV register
3652          ***********************/
3653         hw_rev = iwl_hw_detect(priv);
3654         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3655                 priv->cfg->name, hw_rev);
3656
3657         err = iwl_trans_register(&priv->trans, priv);
3658         if (err)
3659                 goto out_free_traffic_mem;
3660
3661         if (trans_prepare_card_hw(&priv->trans)) {
3662                 err = -EIO;
3663                 IWL_WARN(priv, "Failed, HW not ready\n");
3664                 goto out_free_trans;
3665         }
3666
3667         /*****************
3668          * 4. Read EEPROM
3669          *****************/
3670         /* Read the EEPROM */
3671         err = iwl_eeprom_init(priv, hw_rev);
3672         if (err) {
3673                 IWL_ERR(priv, "Unable to init EEPROM\n");
3674                 goto out_free_trans;
3675         }
3676         err = iwl_eeprom_check_version(priv);
3677         if (err)
3678                 goto out_free_eeprom;
3679
3680         err = iwl_eeprom_check_sku(priv);
3681         if (err)
3682                 goto out_free_eeprom;
3683
3684         /* extract MAC Address */
3685         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3686         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3687         priv->hw->wiphy->addresses = priv->addresses;
3688         priv->hw->wiphy->n_addresses = 1;
3689         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3690         if (num_mac > 1) {
3691                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3692                        ETH_ALEN);
3693                 priv->addresses[1].addr[5]++;
3694                 priv->hw->wiphy->n_addresses++;
3695         }
3696
3697         /************************
3698          * 5. Setup HW constants
3699          ************************/
3700         if (iwl_set_hw_params(priv)) {
3701                 err = -ENOENT;
3702                 IWL_ERR(priv, "failed to set hw parameters\n");
3703                 goto out_free_eeprom;
3704         }
3705
3706         /*******************
3707          * 6. Setup priv
3708          *******************/
3709
3710         err = iwl_init_drv(priv);
3711         if (err)
3712                 goto out_free_eeprom;
3713         /* At this point both hw and priv are initialized. */
3714
3715         /********************
3716          * 7. Setup services
3717          ********************/
3718         iwl_setup_deferred_work(priv);
3719         iwl_setup_rx_handlers(priv);
3720         iwl_testmode_init(priv);
3721
3722         /*********************************************
3723          * 8. Enable interrupts
3724          *********************************************/
3725
3726         iwl_enable_rfkill_int(priv);
3727
3728         /* If platform's RF_KILL switch is NOT set to KILL */
3729         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3730                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3731         else
3732                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3733
3734         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3735                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3736
3737         iwl_power_initialize(priv);
3738         iwl_tt_initialize(priv);
3739
3740         init_completion(&priv->firmware_loading_complete);
3741
3742         err = iwl_request_firmware(priv, true);
3743         if (err)
3744                 goto out_destroy_workqueue;
3745
3746         return 0;
3747
3748 out_destroy_workqueue:
3749         destroy_workqueue(priv->shrd->workqueue);
3750         priv->shrd->workqueue = NULL;
3751         iwl_uninit_drv(priv);
3752 out_free_eeprom:
3753         iwl_eeprom_free(priv);
3754 out_free_trans:
3755         trans_free(&priv->trans);
3756 out_free_traffic_mem:
3757         iwl_free_traffic_mem(priv);
3758         ieee80211_free_hw(priv->hw);
3759 out:
3760         return err;
3761 }
3762
3763 void __devexit iwl_remove(struct iwl_priv * priv)
3764 {
3765         unsigned long flags;
3766
3767         wait_for_completion(&priv->firmware_loading_complete);
3768
3769         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3770
3771         iwl_dbgfs_unregister(priv);
3772         sysfs_remove_group(&priv->bus->dev->kobj,
3773                            &iwl_attribute_group);
3774
3775         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3776          * to be called and iwl_down since we are removing the device
3777          * we need to set STATUS_EXIT_PENDING bit.
3778          */
3779         set_bit(STATUS_EXIT_PENDING, &priv->status);
3780
3781         iwl_testmode_cleanup(priv);
3782         iwl_leds_exit(priv);
3783
3784         if (priv->mac80211_registered) {
3785                 ieee80211_unregister_hw(priv->hw);
3786                 priv->mac80211_registered = 0;
3787         }
3788
3789         /* Reset to low power before unloading driver. */
3790         iwl_apm_stop(priv);
3791
3792         iwl_tt_exit(priv);
3793
3794         /* make sure we flush any pending irq or
3795          * tasklet for the driver
3796          */
3797         spin_lock_irqsave(&priv->lock, flags);
3798         iwl_disable_interrupts(priv);
3799         spin_unlock_irqrestore(&priv->lock, flags);
3800
3801         trans_sync_irq(&priv->trans);
3802
3803         iwl_dealloc_ucode(priv);
3804
3805         trans_rx_free(&priv->trans);
3806         trans_tx_free(&priv->trans);
3807
3808         iwl_eeprom_free(priv);
3809
3810         /*netif_stop_queue(dev); */
3811         flush_workqueue(priv->shrd->workqueue);
3812
3813         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3814          * priv->shrd->workqueue... so we can't take down the workqueue
3815          * until now... */
3816         destroy_workqueue(priv->shrd->workqueue);
3817         priv->shrd->workqueue = NULL;
3818         iwl_free_traffic_mem(priv);
3819
3820         trans_free(&priv->trans);
3821
3822         bus_set_drv_data(priv->bus, NULL);
3823
3824         iwl_uninit_drv(priv);
3825
3826         dev_kfree_skb(priv->beacon_skb);
3827
3828         ieee80211_free_hw(priv->hw);
3829 }
3830
3831
3832 /*****************************************************************************
3833  *
3834  * driver and module entry point
3835  *
3836  *****************************************************************************/
3837 static int __init iwl_init(void)
3838 {
3839
3840         int ret;
3841         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3842         pr_info(DRV_COPYRIGHT "\n");
3843
3844         ret = iwlagn_rate_control_register();
3845         if (ret) {
3846                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3847                 return ret;
3848         }
3849
3850         ret = iwl_pci_register_driver();
3851
3852         if (ret)
3853                 goto error_register;
3854         return ret;
3855
3856 error_register:
3857         iwlagn_rate_control_unregister();
3858         return ret;
3859 }
3860
3861 static void __exit iwl_exit(void)
3862 {
3863         iwl_pci_unregister_driver();
3864         iwlagn_rate_control_unregister();
3865 }
3866
3867 module_exit(iwl_exit);
3868 module_init(iwl_init);
3869
3870 #ifdef CONFIG_IWLWIFI_DEBUG
3871 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
3872                    S_IRUGO | S_IWUSR);
3873 MODULE_PARM_DESC(debug, "debug output mask");
3874 #endif
3875
3876 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3877 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3878 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3879 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3880 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3881 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3882 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3883                    int, S_IRUGO);
3884 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3885 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3886 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3887
3888 module_param_named(ucode_alternative,
3889                    iwlagn_mod_params.wanted_ucode_alternative,
3890                    int, S_IRUGO);
3891 MODULE_PARM_DESC(ucode_alternative,
3892                  "specify ucode alternative to use from ucode file");
3893
3894 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
3895                    int, S_IRUGO);
3896 MODULE_PARM_DESC(antenna_coupling,
3897                  "specify antenna coupling in dB (defualt: 0 dB)");
3898
3899 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
3900                    bool, S_IRUGO);
3901 MODULE_PARM_DESC(bt_ch_inhibition,
3902                  "Disable BT channel inhibition (default: enable)");
3903
3904 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3905 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3906
3907 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3908 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3909
3910 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3911 MODULE_PARM_DESC(wd_disable,
3912                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3913
3914 /*
3915  * set bt_coex_active to true, uCode will do kill/defer
3916  * every time the priority line is asserted (BT is sending signals on the
3917  * priority line in the PCIx).
3918  * set bt_coex_active to false, uCode will ignore the BT activity and
3919  * perform the normal operation
3920  *
3921  * User might experience transmit issue on some platform due to WiFi/BT
3922  * co-exist problem. The possible behaviors are:
3923  *   Able to scan and finding all the available AP
3924  *   Not able to associate with any AP
3925  * On those platforms, WiFi communication can be restored by set
3926  * "bt_coex_active" module parameter to "false"
3927  *
3928  * default: bt_coex_active = true (BT_COEX_ENABLE)
3929  */
3930 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3931                 bool, S_IRUGO);
3932 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3933
3934 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3935 MODULE_PARM_DESC(led_mode, "0=system default, "
3936                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3937
3938 module_param_named(power_save, iwlagn_mod_params.power_save,
3939                 bool, S_IRUGO);
3940 MODULE_PARM_DESC(power_save,
3941                  "enable WiFi power management (default: disable)");
3942
3943 module_param_named(power_level, iwlagn_mod_params.power_level,
3944                 int, S_IRUGO);
3945 MODULE_PARM_DESC(power_level,
3946                  "default power save level (range from 1 - 5, default: 1)");
3947
3948 /*
3949  * For now, keep using power level 1 instead of automatically
3950  * adjusting ...
3951  */
3952 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3953                 bool, S_IRUGO);
3954 MODULE_PARM_DESC(no_sleep_autoadjust,
3955                  "don't automatically adjust sleep level "
3956                  "according to maximum network latency (default: true)");