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