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-bus.h"
  55 #include "iwl-trans.h"
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  */
  66 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  67
  68 #ifdef CONFIG_IWLWIFI_DEBUG
  69 #define VD "d"
  70 #else
  71 #define VD
  72 #endif
  73
  74 #define DRV_VERSION     IWLWIFI_VERSION VD
  75
  76
  77 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  78 MODULE_VERSION(DRV_VERSION);
  79 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  80 MODULE_LICENSE("GPL");
  81
  82 static int iwlagn_ant_coupling;
  83 static bool iwlagn_bt_ch_announce = 1;
  84
  85 void iwl_update_chain_flags(struct iwl_priv *priv)
  86 {
  87         struct iwl_rxon_context *ctx;
  88
  89         for_each_context(priv, ctx) {
  90                 iwlagn_set_rxon_chain(priv, ctx);
  91                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  92                         iwlagn_commit_rxon(priv, ctx);
  93         }
  94 }
  95
  96 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  97 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  98                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  99                                u8 *beacon, u32 frame_size)
 100 {
 101         u16 tim_idx;
 102         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 103
 104         /*
 105          * The index is relative to frame start but we start looking at the
 106          * variable-length part of the beacon.
 107          */
 108         tim_idx = mgmt->u.beacon.variable - beacon;
 109
 110         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 111         while ((tim_idx < (frame_size - 2)) &&
 112                         (beacon[tim_idx] != WLAN_EID_TIM))
 113                 tim_idx += beacon[tim_idx+1] + 2;
 114
 115         /* If TIM field was found, set variables */
 116         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 117                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 118                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 119         } else
 120                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 121 }
 122
 123 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 124 {
 125         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 126         struct iwl_host_cmd cmd = {
 127                 .id = REPLY_TX_BEACON,
 128                 .flags = CMD_SYNC,
 129         };
 130         struct ieee80211_tx_info *info;
 131         u32 frame_size;
 132         u32 rate_flags;
 133         u32 rate;
 134
 135         /*
 136          * We have to set up the TX command, the TX Beacon command, and the
 137          * beacon contents.
 138          */
 139
 140         lockdep_assert_held(&priv->mutex);
 141
 142         if (!priv->beacon_ctx) {
 143                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 144                 return 0;
 145         }
 146
 147         if (WARN_ON(!priv->beacon_skb))
 148                 return -EINVAL;
 149
 150         /* Allocate beacon command */
 151         if (!priv->beacon_cmd)
 152                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 153         tx_beacon_cmd = priv->beacon_cmd;
 154         if (!tx_beacon_cmd)
 155                 return -ENOMEM;
 156
 157         frame_size = priv->beacon_skb->len;
 158
 159         /* Set up TX command fields */
 160         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 161         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 162         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 163         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 164                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 165
 166         /* Set up TX beacon command fields */
 167         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 168                            frame_size);
 169
 170         /* Set up packet rate and flags */
 171         info = IEEE80211_SKB_CB(priv->beacon_skb);
 172
 173         /*
 174          * Let's set up the rate at least somewhat correctly;
 175          * it will currently not actually be used by the uCode,
 176          * it uses the broadcast station's rate instead.
 177          */
 178         if (info->control.rates[0].idx < 0 ||
 179             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 180                 rate = 0;
 181         else
 182                 rate = info->control.rates[0].idx;
 183
 184         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 185                                               priv->hw_params.valid_tx_ant);
 186         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 187
 188         /* In mac80211, rates for 5 GHz start at 0 */
 189         if (info->band == IEEE80211_BAND_5GHZ)
 190                 rate += IWL_FIRST_OFDM_RATE;
 191         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 192                 rate_flags |= RATE_MCS_CCK_MSK;
 193
 194         tx_beacon_cmd->tx.rate_n_flags =
 195                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 196
 197         /* Submit command */
 198         cmd.len[0] = sizeof(*tx_beacon_cmd);
 199         cmd.data[0] = tx_beacon_cmd;
 200         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 201         cmd.len[1] = frame_size;
 202         cmd.data[1] = priv->beacon_skb->data;
 203         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 204
 205         return trans_send_cmd(&priv->trans, &cmd);
 206 }
 207
 208 static void iwl_bg_beacon_update(struct work_struct *work)
 209 {
 210         struct iwl_priv *priv =
 211                 container_of(work, struct iwl_priv, beacon_update);
 212         struct sk_buff *beacon;
 213
 214         mutex_lock(&priv->mutex);
 215         if (!priv->beacon_ctx) {
 216                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 217                 goto out;
 218         }
 219
 220         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 221                 /*
 222                  * The ucode will send beacon notifications even in
 223                  * IBSS mode, but we don't want to process them. But
 224                  * we need to defer the type check to here due to
 225                  * requiring locking around the beacon_ctx access.
 226                  */
 227                 goto out;
 228         }
 229
 230         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 231         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 232         if (!beacon) {
 233                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 234                 goto out;
 235         }
 236
 237         /* new beacon skb is allocated every time; dispose previous.*/
 238         dev_kfree_skb(priv->beacon_skb);
 239
 240         priv->beacon_skb = beacon;
 241
 242         iwlagn_send_beacon_cmd(priv);
 243  out:
 244         mutex_unlock(&priv->mutex);
 245 }
 246
 247 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 248 {
 249         struct iwl_priv *priv =
 250                 container_of(work, struct iwl_priv, bt_runtime_config);
 251
 252         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 253                 return;
 254
 255         /* dont send host command if rf-kill is on */
 256         if (!iwl_is_ready_rf(priv))
 257                 return;
 258         iwlagn_send_advance_bt_config(priv);
 259 }
 260
 261 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 262 {
 263         struct iwl_priv *priv =
 264                 container_of(work, struct iwl_priv, bt_full_concurrency);
 265         struct iwl_rxon_context *ctx;
 266
 267         mutex_lock(&priv->mutex);
 268
 269         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 270                 goto out;
 271
 272         /* dont send host command if rf-kill is on */
 273         if (!iwl_is_ready_rf(priv))
 274                 goto out;
 275
 276         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 277                        priv->bt_full_concurrent ?
 278                        "full concurrency" : "3-wire");
 279
 280         /*
 281          * LQ & RXON updated cmds must be sent before BT Config cmd
 282          * to avoid 3-wire collisions
 283          */
 284         for_each_context(priv, ctx) {
 285                 iwlagn_set_rxon_chain(priv, ctx);
 286                 iwlagn_commit_rxon(priv, ctx);
 287         }
 288
 289         iwlagn_send_advance_bt_config(priv);
 290 out:
 291         mutex_unlock(&priv->mutex);
 292 }
 293
 294 /**
 295  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 296  *
 297  * This callback is provided in order to send a statistics request.
 298  *
 299  * This timer function is continually reset to execute within
 300  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 301  * was received.  We need to ensure we receive the statistics in order
 302  * to update the temperature used for calibrating the TXPOWER.
 303  */
 304 static void iwl_bg_statistics_periodic(unsigned long data)
 305 {
 306         struct iwl_priv *priv = (struct iwl_priv *)data;
 307
 308         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 309                 return;
 310
 311         /* dont send host command if rf-kill is on */
 312         if (!iwl_is_ready_rf(priv))
 313                 return;
 314
 315         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 316 }
 317
 318
 319 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 320                                         u32 start_idx, u32 num_events,
 321                                         u32 mode)
 322 {
 323         u32 i;
 324         u32 ptr;        /* SRAM byte address of log data */
 325         u32 ev, time, data; /* event log data */
 326         unsigned long reg_flags;
 327
 328         if (mode == 0)
 329                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 330         else
 331                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 332
 333         /* Make sure device is powered up for SRAM reads */
 334         spin_lock_irqsave(&priv->reg_lock, reg_flags);
 335         if (iwl_grab_nic_access(priv)) {
 336                 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 337                 return;
 338         }
 339
 340         /* Set starting address; reads will auto-increment */
 341         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
 342         rmb();
 343
 344         /*
 345          * "time" is actually "data" for mode 0 (no timestamp).
 346          * place event id # at far right for easier visual parsing.
 347          */
 348         for (i = 0; i < num_events; i++) {
 349                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 350                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 351                 if (mode == 0) {
 352                         trace_iwlwifi_dev_ucode_cont_event(priv,
 353                                                         0, time, ev);
 354                 } else {
 355                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
 356                         trace_iwlwifi_dev_ucode_cont_event(priv,
 357                                                 time, data, ev);
 358                 }
 359         }
 360         /* Allow device to power down */
 361         iwl_release_nic_access(priv);
 362         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
 363 }
 364
 365 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 366 {
 367         u32 capacity;   /* event log capacity in # entries */
 368         u32 base;       /* SRAM byte address of event log header */
 369         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 370         u32 num_wraps;  /* # times uCode wrapped to top of log */
 371         u32 next_entry; /* index of next entry to be written by uCode */
 372
 373         base = priv->device_pointers.error_event_table;
 374         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 375                 capacity = iwl_read_targ_mem(priv, base);
 376                 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
 377                 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
 378                 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
 379         } else
 380                 return;
 381
 382         if (num_wraps == priv->event_log.num_wraps) {
 383                 iwl_print_cont_event_trace(priv,
 384                                        base, priv->event_log.next_entry,
 385                                        next_entry - priv->event_log.next_entry,
 386                                        mode);
 387                 priv->event_log.non_wraps_count++;
 388         } else {
 389                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 390                         priv->event_log.wraps_more_count++;
 391                 else
 392                         priv->event_log.wraps_once_count++;
 393                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 394                                 num_wraps - priv->event_log.num_wraps,
 395                                 next_entry, priv->event_log.next_entry);
 396                 if (next_entry < priv->event_log.next_entry) {
 397                         iwl_print_cont_event_trace(priv, base,
 398                                priv->event_log.next_entry,
 399                                capacity - priv->event_log.next_entry,
 400                                mode);
 401
 402                         iwl_print_cont_event_trace(priv, base, 0,
 403                                 next_entry, mode);
 404                 } else {
 405                         iwl_print_cont_event_trace(priv, base,
 406                                next_entry, capacity - next_entry,
 407                                mode);
 408
 409                         iwl_print_cont_event_trace(priv, base, 0,
 410                                 next_entry, mode);
 411                 }
 412         }
 413         priv->event_log.num_wraps = num_wraps;
 414         priv->event_log.next_entry = next_entry;
 415 }
 416
 417 /**
 418  * iwl_bg_ucode_trace - Timer callback to log ucode event
 419  *
 420  * The timer is continually set to execute every
 421  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 422  * this function is to perform continuous uCode event logging operation
 423  * if enabled
 424  */
 425 static void iwl_bg_ucode_trace(unsigned long data)
 426 {
 427         struct iwl_priv *priv = (struct iwl_priv *)data;
 428
 429         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 430                 return;
 431
 432         if (priv->event_log.ucode_trace) {
 433                 iwl_continuous_event_trace(priv);
 434                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 435                 mod_timer(&priv->ucode_trace,
 436                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 437         }
 438 }
 439
 440 static void iwl_bg_tx_flush(struct work_struct *work)
 441 {
 442         struct iwl_priv *priv =
 443                 container_of(work, struct iwl_priv, tx_flush);
 444
 445         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 446                 return;
 447
 448         /* do nothing if rf-kill is on */
 449         if (!iwl_is_ready_rf(priv))
 450                 return;
 451
 452         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 453         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 454 }
 455
 456 /*****************************************************************************
 457  *
 458  * sysfs attributes
 459  *
 460  *****************************************************************************/
 461
 462 #ifdef CONFIG_IWLWIFI_DEBUG
 463
 464 /*
 465  * The following adds a new attribute to the sysfs representation
 466  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
 467  * used for controlling the debug level.
 468  *
 469  * See the level definitions in iwl for details.
 470  *
 471  * The debug_level being managed using sysfs below is a per device debug
 472  * level that is used instead of the global debug level if it (the per
 473  * device debug level) is set.
 474  */
 475 static ssize_t show_debug_level(struct device *d,
 476                                 struct device_attribute *attr, char *buf)
 477 {
 478         struct iwl_priv *priv = dev_get_drvdata(d);
 479         return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
 480 }
 481 static ssize_t store_debug_level(struct device *d,
 482                                 struct device_attribute *attr,
 483                                  const char *buf, size_t count)
 484 {
 485         struct iwl_priv *priv = dev_get_drvdata(d);
 486         unsigned long val;
 487         int ret;
 488
 489         ret = strict_strtoul(buf, 0, &val);
 490         if (ret)
 491                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
 492         else {
 493                 priv->debug_level = val;
 494                 if (iwl_alloc_traffic_mem(priv))
 495                         IWL_ERR(priv,
 496                                 "Not enough memory to generate traffic log\n");
 497         }
 498         return strnlen(buf, count);
 499 }
 500
 501 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
 502                         show_debug_level, store_debug_level);
 503
 504
 505 #endif /* CONFIG_IWLWIFI_DEBUG */
 506
 507
 508 static ssize_t show_temperature(struct device *d,
 509                                 struct device_attribute *attr, char *buf)
 510 {
 511         struct iwl_priv *priv = dev_get_drvdata(d);
 512
 513         if (!iwl_is_alive(priv))
 514                 return -EAGAIN;
 515
 516         return sprintf(buf, "%d\n", priv->temperature);
 517 }
 518
 519 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
 520
 521 static ssize_t show_tx_power(struct device *d,
 522                              struct device_attribute *attr, char *buf)
 523 {
 524         struct iwl_priv *priv = dev_get_drvdata(d);
 525
 526         if (!iwl_is_ready_rf(priv))
 527                 return sprintf(buf, "off\n");
 528         else
 529                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
 530 }
 531
 532 static ssize_t store_tx_power(struct device *d,
 533                               struct device_attribute *attr,
 534                               const char *buf, size_t count)
 535 {
 536         struct iwl_priv *priv = dev_get_drvdata(d);
 537         unsigned long val;
 538         int ret;
 539
 540         ret = strict_strtoul(buf, 10, &val);
 541         if (ret)
 542                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
 543         else {
 544                 ret = iwl_set_tx_power(priv, val, false);
 545                 if (ret)
 546                         IWL_ERR(priv, "failed setting tx power (0x%d).\n",
 547                                 ret);
 548                 else
 549                         ret = count;
 550         }
 551         return ret;
 552 }
 553
 554 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
 555
 556 static struct attribute *iwl_sysfs_entries[] = {
 557         &dev_attr_temperature.attr,
 558         &dev_attr_tx_power.attr,
 559 #ifdef CONFIG_IWLWIFI_DEBUG
 560         &dev_attr_debug_level.attr,
 561 #endif
 562         NULL
 563 };
 564
 565 static struct attribute_group iwl_attribute_group = {
 566         .name = NULL,           /* put in device directory */
 567         .attrs = iwl_sysfs_entries,
 568 };
 569
 570 /******************************************************************************
 571  *
 572  * uCode download functions
 573  *
 574  ******************************************************************************/
 575
 576 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
 577 {
 578         if (desc->v_addr)
 579                 dma_free_coherent(priv->bus->dev, desc->len,
 580                                   desc->v_addr, desc->p_addr);
 581         desc->v_addr = NULL;
 582         desc->len = 0;
 583 }
 584
 585 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
 586 {
 587         iwl_free_fw_desc(priv, &img->code);
 588         iwl_free_fw_desc(priv, &img->data);
 589 }
 590
 591 static void iwl_dealloc_ucode(struct iwl_priv *priv)
 592 {
 593         iwl_free_fw_img(priv, &priv->ucode_rt);
 594         iwl_free_fw_img(priv, &priv->ucode_init);
 595         iwl_free_fw_img(priv, &priv->ucode_wowlan);
 596 }
 597
 598 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
 599                              const void *data, size_t len)
 600 {
 601         if (!len) {
 602                 desc->v_addr = NULL;
 603                 return -EINVAL;
 604         }
 605
 606         desc->v_addr = dma_alloc_coherent(priv->bus->dev, len,
 607                                           &desc->p_addr, GFP_KERNEL);
 608         if (!desc->v_addr)
 609                 return -ENOMEM;
 610
 611         desc->len = len;
 612         memcpy(desc->v_addr, data, len);
 613         return 0;
 614 }
 615
 616 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 617 {
 618         static const u8 iwlagn_bss_ac_to_fifo[] = {
 619                 IWL_TX_FIFO_VO,
 620                 IWL_TX_FIFO_VI,
 621                 IWL_TX_FIFO_BE,
 622                 IWL_TX_FIFO_BK,
 623         };
 624         static const u8 iwlagn_bss_ac_to_queue[] = {
 625                 0, 1, 2, 3,
 626         };
 627         static const u8 iwlagn_pan_ac_to_fifo[] = {
 628                 IWL_TX_FIFO_VO_IPAN,
 629                 IWL_TX_FIFO_VI_IPAN,
 630                 IWL_TX_FIFO_BE_IPAN,
 631                 IWL_TX_FIFO_BK_IPAN,
 632         };
 633         static const u8 iwlagn_pan_ac_to_queue[] = {
 634                 7, 6, 5, 4,
 635         };
 636         int i;
 637
 638         /*
 639          * The default context is always valid,
 640          * the PAN context depends on uCode.
 641          */
 642         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 643         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 644                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 645
 646         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 647                 priv->contexts[i].ctxid = i;
 648
 649         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 650         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 651         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 652         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 653         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 654         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 655         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 656         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 657         priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
 658         priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
 659         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 660                 BIT(NL80211_IFTYPE_ADHOC);
 661         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 662                 BIT(NL80211_IFTYPE_STATION);
 663         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 664         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 665         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 666         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 667
 668         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 669         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 670                 REPLY_WIPAN_RXON_TIMING;
 671         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 672                 REPLY_WIPAN_RXON_ASSOC;
 673         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 674         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 675         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 676         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 677         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 678         priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
 679         priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
 680         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 681         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 682                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 683
 684         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 685                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 686                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 687                         BIT(NL80211_IFTYPE_P2P_GO);
 688
 689         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 690         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 691         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 692
 693         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 694 }
 695
 696
 697 struct iwlagn_ucode_capabilities {
 698         u32 max_probe_length;
 699         u32 standard_phy_calibration_size;
 700         u32 flags;
 701 };
 702
 703 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 704 static int iwl_mac_setup_register(struct iwl_priv *priv,
 705                                   struct iwlagn_ucode_capabilities *capa);
 706
 707 #define UCODE_EXPERIMENTAL_INDEX        100
 708 #define UCODE_EXPERIMENTAL_TAG          "exp"
 709
 710 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 711 {
 712         const char *name_pre = priv->cfg->fw_name_pre;
 713         char tag[8];
 714
 715         if (first) {
 716 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 717                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 718                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 719         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 720 #endif
 721                 priv->fw_index = priv->cfg->ucode_api_max;
 722                 sprintf(tag, "%d", priv->fw_index);
 723         } else {
 724                 priv->fw_index--;
 725                 sprintf(tag, "%d", priv->fw_index);
 726         }
 727
 728         if (priv->fw_index < priv->cfg->ucode_api_min) {
 729                 IWL_ERR(priv, "no suitable firmware found!\n");
 730                 return -ENOENT;
 731         }
 732
 733         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 734
 735         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 736                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 737                                 ? "EXPERIMENTAL " : "",
 738                        priv->firmware_name);
 739
 740         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 741                                        priv->bus->dev,
 742                                        GFP_KERNEL, priv, iwl_ucode_callback);
 743 }
 744
 745 struct iwlagn_firmware_pieces {
 746         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 747         size_t inst_size, data_size, init_size, init_data_size,
 748                wowlan_inst_size, wowlan_data_size;
 749
 750         u32 build;
 751
 752         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 753         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 754 };
 755
 756 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 757                                        const struct firmware *ucode_raw,
 758                                        struct iwlagn_firmware_pieces *pieces)
 759 {
 760         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 761         u32 api_ver, hdr_size;
 762         const u8 *src;
 763
 764         priv->ucode_ver = le32_to_cpu(ucode->ver);
 765         api_ver = IWL_UCODE_API(priv->ucode_ver);
 766
 767         switch (api_ver) {
 768         default:
 769                 hdr_size = 28;
 770                 if (ucode_raw->size < hdr_size) {
 771                         IWL_ERR(priv, "File size too small!\n");
 772                         return -EINVAL;
 773                 }
 774                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 775                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 776                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 777                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 778                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 779                 src = ucode->u.v2.data;
 780                 break;
 781         case 0:
 782         case 1:
 783         case 2:
 784                 hdr_size = 24;
 785                 if (ucode_raw->size < hdr_size) {
 786                         IWL_ERR(priv, "File size too small!\n");
 787                         return -EINVAL;
 788                 }
 789                 pieces->build = 0;
 790                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 791                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 792                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 793                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 794                 src = ucode->u.v1.data;
 795                 break;
 796         }
 797
 798         /* Verify size of file vs. image size info in file's header */
 799         if (ucode_raw->size != hdr_size + pieces->inst_size +
 800                                 pieces->data_size + pieces->init_size +
 801                                 pieces->init_data_size) {
 802
 803                 IWL_ERR(priv,
 804                         "uCode file size %d does not match expected size\n",
 805                         (int)ucode_raw->size);
 806                 return -EINVAL;
 807         }
 808
 809         pieces->inst = src;
 810         src += pieces->inst_size;
 811         pieces->data = src;
 812         src += pieces->data_size;
 813         pieces->init = src;
 814         src += pieces->init_size;
 815         pieces->init_data = src;
 816         src += pieces->init_data_size;
 817
 818         return 0;
 819 }
 820
 821 static int iwlagn_wanted_ucode_alternative = 1;
 822
 823 static int iwlagn_load_firmware(struct iwl_priv *priv,
 824                                 const struct firmware *ucode_raw,
 825                                 struct iwlagn_firmware_pieces *pieces,
 826                                 struct iwlagn_ucode_capabilities *capa)
 827 {
 828         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 829         struct iwl_ucode_tlv *tlv;
 830         size_t len = ucode_raw->size;
 831         const u8 *data;
 832         int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
 833         u64 alternatives;
 834         u32 tlv_len;
 835         enum iwl_ucode_tlv_type tlv_type;
 836         const u8 *tlv_data;
 837
 838         if (len < sizeof(*ucode)) {
 839                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 840                 return -EINVAL;
 841         }
 842
 843         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 844                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 845                         le32_to_cpu(ucode->magic));
 846                 return -EINVAL;
 847         }
 848
 849         /*
 850          * Check which alternatives are present, and "downgrade"
 851          * when the chosen alternative is not present, warning
 852          * the user when that happens. Some files may not have
 853          * any alternatives, so don't warn in that case.
 854          */
 855         alternatives = le64_to_cpu(ucode->alternatives);
 856         tmp = wanted_alternative;
 857         if (wanted_alternative > 63)
 858                 wanted_alternative = 63;
 859         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 860                 wanted_alternative--;
 861         if (wanted_alternative && wanted_alternative != tmp)
 862                 IWL_WARN(priv,
 863                          "uCode alternative %d not available, choosing %d\n",
 864                          tmp, wanted_alternative);
 865
 866         priv->ucode_ver = le32_to_cpu(ucode->ver);
 867         pieces->build = le32_to_cpu(ucode->build);
 868         data = ucode->data;
 869
 870         len -= sizeof(*ucode);
 871
 872         while (len >= sizeof(*tlv)) {
 873                 u16 tlv_alt;
 874
 875                 len -= sizeof(*tlv);
 876                 tlv = (void *)data;
 877
 878                 tlv_len = le32_to_cpu(tlv->length);
 879                 tlv_type = le16_to_cpu(tlv->type);
 880                 tlv_alt = le16_to_cpu(tlv->alternative);
 881                 tlv_data = tlv->data;
 882
 883                 if (len < tlv_len) {
 884                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 885                                 len, tlv_len);
 886                         return -EINVAL;
 887                 }
 888                 len -= ALIGN(tlv_len, 4);
 889                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 890
 891                 /*
 892                  * Alternative 0 is always valid.
 893                  *
 894                  * Skip alternative TLVs that are not selected.
 895                  */
 896                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 897                         continue;
 898
 899                 switch (tlv_type) {
 900                 case IWL_UCODE_TLV_INST:
 901                         pieces->inst = tlv_data;
 902                         pieces->inst_size = tlv_len;
 903                         break;
 904                 case IWL_UCODE_TLV_DATA:
 905                         pieces->data = tlv_data;
 906                         pieces->data_size = tlv_len;
 907                         break;
 908                 case IWL_UCODE_TLV_INIT:
 909                         pieces->init = tlv_data;
 910                         pieces->init_size = tlv_len;
 911                         break;
 912                 case IWL_UCODE_TLV_INIT_DATA:
 913                         pieces->init_data = tlv_data;
 914                         pieces->init_data_size = tlv_len;
 915                         break;
 916                 case IWL_UCODE_TLV_BOOT:
 917                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 918                         break;
 919                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 920                         if (tlv_len != sizeof(u32))
 921                                 goto invalid_tlv_len;
 922                         capa->max_probe_length =
 923                                         le32_to_cpup((__le32 *)tlv_data);
 924                         break;
 925                 case IWL_UCODE_TLV_PAN:
 926                         if (tlv_len)
 927                                 goto invalid_tlv_len;
 928                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 929                         break;
 930                 case IWL_UCODE_TLV_FLAGS:
 931                         /* must be at least one u32 */
 932                         if (tlv_len < sizeof(u32))
 933                                 goto invalid_tlv_len;
 934                         /* and a proper number of u32s */
 935                         if (tlv_len % sizeof(u32))
 936                                 goto invalid_tlv_len;
 937                         /*
 938                          * This driver only reads the first u32 as
 939                          * right now no more features are defined,
 940                          * if that changes then either the driver
 941                          * will not work with the new firmware, or
 942                          * it'll not take advantage of new features.
 943                          */
 944                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 945                         break;
 946                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 947                         if (tlv_len != sizeof(u32))
 948                                 goto invalid_tlv_len;
 949                         pieces->init_evtlog_ptr =
 950                                         le32_to_cpup((__le32 *)tlv_data);
 951                         break;
 952                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 953                         if (tlv_len != sizeof(u32))
 954                                 goto invalid_tlv_len;
 955                         pieces->init_evtlog_size =
 956                                         le32_to_cpup((__le32 *)tlv_data);
 957                         break;
 958                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 959                         if (tlv_len != sizeof(u32))
 960                                 goto invalid_tlv_len;
 961                         pieces->init_errlog_ptr =
 962                                         le32_to_cpup((__le32 *)tlv_data);
 963                         break;
 964                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 965                         if (tlv_len != sizeof(u32))
 966                                 goto invalid_tlv_len;
 967                         pieces->inst_evtlog_ptr =
 968                                         le32_to_cpup((__le32 *)tlv_data);
 969                         break;
 970                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 971                         if (tlv_len != sizeof(u32))
 972                                 goto invalid_tlv_len;
 973                         pieces->inst_evtlog_size =
 974                                         le32_to_cpup((__le32 *)tlv_data);
 975                         break;
 976                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 977                         if (tlv_len != sizeof(u32))
 978                                 goto invalid_tlv_len;
 979                         pieces->inst_errlog_ptr =
 980                                         le32_to_cpup((__le32 *)tlv_data);
 981                         break;
 982                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 983                         if (tlv_len)
 984                                 goto invalid_tlv_len;
 985                         priv->enhance_sensitivity_table = true;
 986                         break;
 987                 case IWL_UCODE_TLV_WOWLAN_INST:
 988                         pieces->wowlan_inst = tlv_data;
 989                         pieces->wowlan_inst_size = tlv_len;
 990                         break;
 991                 case IWL_UCODE_TLV_WOWLAN_DATA:
 992                         pieces->wowlan_data = tlv_data;
 993                         pieces->wowlan_data_size = tlv_len;
 994                         break;
 995                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 996                         if (tlv_len != sizeof(u32))
 997                                 goto invalid_tlv_len;
 998                         capa->standard_phy_calibration_size =
 999                                         le32_to_cpup((__le32 *)tlv_data);
1000                         break;
1001                 default:
1002                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1003                         break;
1004                 }
1005         }
1006
1007         if (len) {
1008                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1009                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1010                 return -EINVAL;
1011         }
1012
1013         return 0;
1014
1015  invalid_tlv_len:
1016         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1017         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1018
1019         return -EINVAL;
1020 }
1021
1022 /**
1023  * iwl_ucode_callback - callback when firmware was loaded
1024  *
1025  * If loaded successfully, copies the firmware into buffers
1026  * for the card to fetch (via DMA).
1027  */
1028 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1029 {
1030         struct iwl_priv *priv = context;
1031         struct iwl_ucode_header *ucode;
1032         int err;
1033         struct iwlagn_firmware_pieces pieces;
1034         const unsigned int api_max = priv->cfg->ucode_api_max;
1035         unsigned int api_ok = priv->cfg->ucode_api_ok;
1036         const unsigned int api_min = priv->cfg->ucode_api_min;
1037         u32 api_ver;
1038         char buildstr[25];
1039         u32 build;
1040         struct iwlagn_ucode_capabilities ucode_capa = {
1041                 .max_probe_length = 200,
1042                 .standard_phy_calibration_size =
1043                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1044         };
1045
1046         if (!api_ok)
1047                 api_ok = api_max;
1048
1049         memset(&pieces, 0, sizeof(pieces));
1050
1051         if (!ucode_raw) {
1052                 if (priv->fw_index <= api_ok)
1053                         IWL_ERR(priv,
1054                                 "request for firmware file '%s' failed.\n",
1055                                 priv->firmware_name);
1056                 goto try_again;
1057         }
1058
1059         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1060                        priv->firmware_name, ucode_raw->size);
1061
1062         /* Make sure that we got at least the API version number */
1063         if (ucode_raw->size < 4) {
1064                 IWL_ERR(priv, "File size way too small!\n");
1065                 goto try_again;
1066         }
1067
1068         /* Data from ucode file:  header followed by uCode images */
1069         ucode = (struct iwl_ucode_header *)ucode_raw->data;
1070
1071         if (ucode->ver)
1072                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1073         else
1074                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1075                                            &ucode_capa);
1076
1077         if (err)
1078                 goto try_again;
1079
1080         api_ver = IWL_UCODE_API(priv->ucode_ver);
1081         build = pieces.build;
1082
1083         /*
1084          * api_ver should match the api version forming part of the
1085          * firmware filename ... but we don't check for that and only rely
1086          * on the API version read from firmware header from here on forward
1087          */
1088         /* no api version check required for experimental uCode */
1089         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1090                 if (api_ver < api_min || api_ver > api_max) {
1091                         IWL_ERR(priv,
1092                                 "Driver unable to support your firmware API. "
1093                                 "Driver supports v%u, firmware is v%u.\n",
1094                                 api_max, api_ver);
1095                         goto try_again;
1096                 }
1097
1098                 if (api_ver < api_ok) {
1099                         if (api_ok != api_max)
1100                                 IWL_ERR(priv, "Firmware has old API version, "
1101                                         "expected v%u through v%u, got v%u.\n",
1102                                         api_ok, api_max, api_ver);
1103                         else
1104                                 IWL_ERR(priv, "Firmware has old API version, "
1105                                         "expected v%u, got v%u.\n",
1106                                         api_max, api_ver);
1107                         IWL_ERR(priv, "New firmware can be obtained from "
1108                                       "http://www.intellinuxwireless.org/.\n");
1109                 }
1110         }
1111
1112         if (build)
1113                 sprintf(buildstr, " build %u%s", build,
1114                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1115                                 ? " (EXP)" : "");
1116         else
1117                 buildstr[0] = '\0';
1118
1119         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1120                  IWL_UCODE_MAJOR(priv->ucode_ver),
1121                  IWL_UCODE_MINOR(priv->ucode_ver),
1122                  IWL_UCODE_API(priv->ucode_ver),
1123                  IWL_UCODE_SERIAL(priv->ucode_ver),
1124                  buildstr);
1125
1126         snprintf(priv->hw->wiphy->fw_version,
1127                  sizeof(priv->hw->wiphy->fw_version),
1128                  "%u.%u.%u.%u%s",
1129                  IWL_UCODE_MAJOR(priv->ucode_ver),
1130                  IWL_UCODE_MINOR(priv->ucode_ver),
1131                  IWL_UCODE_API(priv->ucode_ver),
1132                  IWL_UCODE_SERIAL(priv->ucode_ver),
1133                  buildstr);
1134
1135         /*
1136          * For any of the failures below (before allocating pci memory)
1137          * we will try to load a version with a smaller API -- maybe the
1138          * user just got a corrupted version of the latest API.
1139          */
1140
1141         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1142                        priv->ucode_ver);
1143         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1144                        pieces.inst_size);
1145         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1146                        pieces.data_size);
1147         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1148                        pieces.init_size);
1149         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1150                        pieces.init_data_size);
1151
1152         /* Verify that uCode images will fit in card's SRAM */
1153         if (pieces.inst_size > priv->hw_params.max_inst_size) {
1154                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1155                         pieces.inst_size);
1156                 goto try_again;
1157         }
1158
1159         if (pieces.data_size > priv->hw_params.max_data_size) {
1160                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1161                         pieces.data_size);
1162                 goto try_again;
1163         }
1164
1165         if (pieces.init_size > priv->hw_params.max_inst_size) {
1166                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1167                         pieces.init_size);
1168                 goto try_again;
1169         }
1170
1171         if (pieces.init_data_size > priv->hw_params.max_data_size) {
1172                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1173                         pieces.init_data_size);
1174                 goto try_again;
1175         }
1176
1177         /* Allocate ucode buffers for card's bus-master loading ... */
1178
1179         /* Runtime instructions and 2 copies of data:
1180          * 1) unmodified from disk
1181          * 2) backup cache for save/restore during power-downs */
1182         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1183                               pieces.inst, pieces.inst_size))
1184                 goto err_pci_alloc;
1185         if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1186                               pieces.data, pieces.data_size))
1187                 goto err_pci_alloc;
1188
1189         /* Initialization instructions and data */
1190         if (pieces.init_size && pieces.init_data_size) {
1191                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1192                                       pieces.init, pieces.init_size))
1193                         goto err_pci_alloc;
1194                 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1195                                       pieces.init_data, pieces.init_data_size))
1196                         goto err_pci_alloc;
1197         }
1198
1199         /* WoWLAN instructions and data */
1200         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1201                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.code,
1202                                       pieces.wowlan_inst,
1203                                       pieces.wowlan_inst_size))
1204                         goto err_pci_alloc;
1205                 if (iwl_alloc_fw_desc(priv, &priv->ucode_wowlan.data,
1206                                       pieces.wowlan_data,
1207                                       pieces.wowlan_data_size))
1208                         goto err_pci_alloc;
1209         }
1210
1211         /* Now that we can no longer fail, copy information */
1212
1213         /*
1214          * The (size - 16) / 12 formula is based on the information recorded
1215          * for each event, which is of mode 1 (including timestamp) for all
1216          * new microcodes that include this information.
1217          */
1218         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1219         if (pieces.init_evtlog_size)
1220                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1221         else
1222                 priv->init_evtlog_size =
1223                         priv->cfg->base_params->max_event_log_size;
1224         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1225         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1226         if (pieces.inst_evtlog_size)
1227                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1228         else
1229                 priv->inst_evtlog_size =
1230                         priv->cfg->base_params->max_event_log_size;
1231         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1232
1233         priv->new_scan_threshold_behaviour =
1234                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1235
1236         if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1237                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1238
1239         /*
1240          * if not PAN, then don't support P2P -- might be a uCode
1241          * packaging bug or due to the eeprom check above
1242          */
1243         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1244                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1245
1246         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1247                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1248                 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1249         } else {
1250                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1251                 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1252         }
1253
1254         /*
1255          * figure out the offset of chain noise reset and gain commands
1256          * base on the size of standard phy calibration commands table size
1257          */
1258         if (ucode_capa.standard_phy_calibration_size >
1259             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1260                 ucode_capa.standard_phy_calibration_size =
1261                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1262
1263         priv->phy_calib_chain_noise_reset_cmd =
1264                 ucode_capa.standard_phy_calibration_size;
1265         priv->phy_calib_chain_noise_gain_cmd =
1266                 ucode_capa.standard_phy_calibration_size + 1;
1267
1268         /* initialize all valid contexts */
1269         iwl_init_context(priv, ucode_capa.flags);
1270
1271         /**************************************************
1272          * This is still part of probe() in a sense...
1273          *
1274          * 9. Setup and register with mac80211 and debugfs
1275          **************************************************/
1276         err = iwl_mac_setup_register(priv, &ucode_capa);
1277         if (err)
1278                 goto out_unbind;
1279
1280         err = iwl_dbgfs_register(priv, DRV_NAME);
1281         if (err)
1282                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1283
1284         err = sysfs_create_group(&(priv->bus->dev->kobj),
1285                                         &iwl_attribute_group);
1286         if (err) {
1287                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1288                 goto out_unbind;
1289         }
1290
1291         /* We have our copies now, allow OS release its copies */
1292         release_firmware(ucode_raw);
1293         complete(&priv->firmware_loading_complete);
1294         return;
1295
1296  try_again:
1297         /* try next, if any */
1298         if (iwl_request_firmware(priv, false))
1299                 goto out_unbind;
1300         release_firmware(ucode_raw);
1301         return;
1302
1303  err_pci_alloc:
1304         IWL_ERR(priv, "failed to allocate pci memory\n");
1305         iwl_dealloc_ucode(priv);
1306  out_unbind:
1307         complete(&priv->firmware_loading_complete);
1308         device_release_driver(priv->bus->dev);
1309         release_firmware(ucode_raw);
1310 }
1311
1312 static const char * const desc_lookup_text[] = {
1313         "OK",
1314         "FAIL",
1315         "BAD_PARAM",
1316         "BAD_CHECKSUM",
1317         "NMI_INTERRUPT_WDG",
1318         "SYSASSERT",
1319         "FATAL_ERROR",
1320         "BAD_COMMAND",
1321         "HW_ERROR_TUNE_LOCK",
1322         "HW_ERROR_TEMPERATURE",
1323         "ILLEGAL_CHAN_FREQ",
1324         "VCC_NOT_STABLE",
1325         "FH_ERROR",
1326         "NMI_INTERRUPT_HOST",
1327         "NMI_INTERRUPT_ACTION_PT",
1328         "NMI_INTERRUPT_UNKNOWN",
1329         "UCODE_VERSION_MISMATCH",
1330         "HW_ERROR_ABS_LOCK",
1331         "HW_ERROR_CAL_LOCK_FAIL",
1332         "NMI_INTERRUPT_INST_ACTION_PT",
1333         "NMI_INTERRUPT_DATA_ACTION_PT",
1334         "NMI_TRM_HW_ER",
1335         "NMI_INTERRUPT_TRM",
1336         "NMI_INTERRUPT_BREAK_POINT",
1337         "DEBUG_0",
1338         "DEBUG_1",
1339         "DEBUG_2",
1340         "DEBUG_3",
1341 };
1342
1343 static struct { char *name; u8 num; } advanced_lookup[] = {
1344         { "NMI_INTERRUPT_WDG", 0x34 },
1345         { "SYSASSERT", 0x35 },
1346         { "UCODE_VERSION_MISMATCH", 0x37 },
1347         { "BAD_COMMAND", 0x38 },
1348         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1349         { "FATAL_ERROR", 0x3D },
1350         { "NMI_TRM_HW_ERR", 0x46 },
1351         { "NMI_INTERRUPT_TRM", 0x4C },
1352         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1353         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1354         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1355         { "NMI_INTERRUPT_HOST", 0x66 },
1356         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1357         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1358         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1359         { "ADVANCED_SYSASSERT", 0 },
1360 };
1361
1362 static const char *desc_lookup(u32 num)
1363 {
1364         int i;
1365         int max = ARRAY_SIZE(desc_lookup_text);
1366
1367         if (num < max)
1368                 return desc_lookup_text[num];
1369
1370         max = ARRAY_SIZE(advanced_lookup) - 1;
1371         for (i = 0; i < max; i++) {
1372                 if (advanced_lookup[i].num == num)
1373                         break;
1374         }
1375         return advanced_lookup[i].name;
1376 }
1377
1378 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1379 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1380
1381 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1382 {
1383         u32 base;
1384         struct iwl_error_event_table table;
1385
1386         base = priv->device_pointers.error_event_table;
1387         if (priv->ucode_type == IWL_UCODE_INIT) {
1388                 if (!base)
1389                         base = priv->init_errlog_ptr;
1390         } else {
1391                 if (!base)
1392                         base = priv->inst_errlog_ptr;
1393         }
1394
1395         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1396                 IWL_ERR(priv,
1397                         "Not valid error log pointer 0x%08X for %s uCode\n",
1398                         base,
1399                         (priv->ucode_type == IWL_UCODE_INIT)
1400                                         ? "Init" : "RT");
1401                 return;
1402         }
1403
1404         iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1405
1406         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1407                 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1408                 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1409                         priv->status, table.valid);
1410         }
1411
1412         priv->isr_stats.err_code = table.error_id;
1413
1414         trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1415                                       table.data1, table.data2, table.line,
1416                                       table.blink1, table.blink2, table.ilink1,
1417                                       table.ilink2, table.bcon_time, table.gp1,
1418                                       table.gp2, table.gp3, table.ucode_ver,
1419                                       table.hw_ver, table.brd_ver);
1420         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1421                 desc_lookup(table.error_id));
1422         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1423         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1424         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1425         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1426         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1427         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1428         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1429         IWL_ERR(priv, "0x%08X | line\n", table.line);
1430         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1431         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1432         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1433         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1434         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1435         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1436         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1437         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1438         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1439         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1440 }
1441
1442 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1443
1444 /**
1445  * iwl_print_event_log - Dump error event log to syslog
1446  *
1447  */
1448 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1449                                u32 num_events, u32 mode,
1450                                int pos, char **buf, size_t bufsz)
1451 {
1452         u32 i;
1453         u32 base;       /* SRAM byte address of event log header */
1454         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1455         u32 ptr;        /* SRAM byte address of log data */
1456         u32 ev, time, data; /* event log data */
1457         unsigned long reg_flags;
1458
1459         if (num_events == 0)
1460                 return pos;
1461
1462         base = priv->device_pointers.log_event_table;
1463         if (priv->ucode_type == IWL_UCODE_INIT) {
1464                 if (!base)
1465                         base = priv->init_evtlog_ptr;
1466         } else {
1467                 if (!base)
1468                         base = priv->inst_evtlog_ptr;
1469         }
1470
1471         if (mode == 0)
1472                 event_size = 2 * sizeof(u32);
1473         else
1474                 event_size = 3 * sizeof(u32);
1475
1476         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1477
1478         /* Make sure device is powered up for SRAM reads */
1479         spin_lock_irqsave(&priv->reg_lock, reg_flags);
1480         iwl_grab_nic_access(priv);
1481
1482         /* Set starting address; reads will auto-increment */
1483         iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1484         rmb();
1485
1486         /* "time" is actually "data" for mode 0 (no timestamp).
1487         * place event id # at far right for easier visual parsing. */
1488         for (i = 0; i < num_events; i++) {
1489                 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1490                 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1491                 if (mode == 0) {
1492                         /* data, ev */
1493                         if (bufsz) {
1494                                 pos += scnprintf(*buf + pos, bufsz - pos,
1495                                                 "EVT_LOG:0x%08x:%04u\n",
1496                                                 time, ev);
1497                         } else {
1498                                 trace_iwlwifi_dev_ucode_event(priv, 0,
1499                                         time, ev);
1500                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1501                                         time, ev);
1502                         }
1503                 } else {
1504                         data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1505                         if (bufsz) {
1506                                 pos += scnprintf(*buf + pos, bufsz - pos,
1507                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1508                                                  time, data, ev);
1509                         } else {
1510                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1511                                         time, data, ev);
1512                                 trace_iwlwifi_dev_ucode_event(priv, time,
1513                                         data, ev);
1514                         }
1515                 }
1516         }
1517
1518         /* Allow device to power down */
1519         iwl_release_nic_access(priv);
1520         spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1521         return pos;
1522 }
1523
1524 /**
1525  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1526  */
1527 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1528                                     u32 num_wraps, u32 next_entry,
1529                                     u32 size, u32 mode,
1530                                     int pos, char **buf, size_t bufsz)
1531 {
1532         /*
1533          * display the newest DEFAULT_LOG_ENTRIES entries
1534          * i.e the entries just before the next ont that uCode would fill.
1535          */
1536         if (num_wraps) {
1537                 if (next_entry < size) {
1538                         pos = iwl_print_event_log(priv,
1539                                                 capacity - (size - next_entry),
1540                                                 size - next_entry, mode,
1541                                                 pos, buf, bufsz);
1542                         pos = iwl_print_event_log(priv, 0,
1543                                                   next_entry, mode,
1544                                                   pos, buf, bufsz);
1545                 } else
1546                         pos = iwl_print_event_log(priv, next_entry - size,
1547                                                   size, mode, pos, buf, bufsz);
1548         } else {
1549                 if (next_entry < size) {
1550                         pos = iwl_print_event_log(priv, 0, next_entry,
1551                                                   mode, pos, buf, bufsz);
1552                 } else {
1553                         pos = iwl_print_event_log(priv, next_entry - size,
1554                                                   size, mode, pos, buf, bufsz);
1555                 }
1556         }
1557         return pos;
1558 }
1559
1560 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1561
1562 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1563                             char **buf, bool display)
1564 {
1565         u32 base;       /* SRAM byte address of event log header */
1566         u32 capacity;   /* event log capacity in # entries */
1567         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1568         u32 num_wraps;  /* # times uCode wrapped to top of log */
1569         u32 next_entry; /* index of next entry to be written by uCode */
1570         u32 size;       /* # entries that we'll print */
1571         u32 logsize;
1572         int pos = 0;
1573         size_t bufsz = 0;
1574
1575         base = priv->device_pointers.log_event_table;
1576         if (priv->ucode_type == IWL_UCODE_INIT) {
1577                 logsize = priv->init_evtlog_size;
1578                 if (!base)
1579                         base = priv->init_evtlog_ptr;
1580         } else {
1581                 logsize = priv->inst_evtlog_size;
1582                 if (!base)
1583                         base = priv->inst_evtlog_ptr;
1584         }
1585
1586         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1587                 IWL_ERR(priv,
1588                         "Invalid event log pointer 0x%08X for %s uCode\n",
1589                         base,
1590                         (priv->ucode_type == IWL_UCODE_INIT)
1591                                         ? "Init" : "RT");
1592                 return -EINVAL;
1593         }
1594
1595         /* event log header */
1596         capacity = iwl_read_targ_mem(priv, base);
1597         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1598         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1599         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1600
1601         if (capacity > logsize) {
1602                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1603                         capacity, logsize);
1604                 capacity = logsize;
1605         }
1606
1607         if (next_entry > logsize) {
1608                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1609                         next_entry, logsize);
1610                 next_entry = logsize;
1611         }
1612
1613         size = num_wraps ? capacity : next_entry;
1614
1615         /* bail out if nothing in log */
1616         if (size == 0) {
1617                 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1618                 return pos;
1619         }
1620
1621         /* enable/disable bt channel inhibition */
1622         priv->bt_ch_announce = iwlagn_bt_ch_announce;
1623
1624 #ifdef CONFIG_IWLWIFI_DEBUG
1625         if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1626                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1627                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1628 #else
1629         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1630                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1631 #endif
1632         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1633                 size);
1634
1635 #ifdef CONFIG_IWLWIFI_DEBUG
1636         if (display) {
1637                 if (full_log)
1638                         bufsz = capacity * 48;
1639                 else
1640                         bufsz = size * 48;
1641                 *buf = kmalloc(bufsz, GFP_KERNEL);
1642                 if (!*buf)
1643                         return -ENOMEM;
1644         }
1645         if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1646                 /*
1647                  * if uCode has wrapped back to top of log,
1648                  * start at the oldest entry,
1649                  * i.e the next one that uCode would fill.
1650                  */
1651                 if (num_wraps)
1652                         pos = iwl_print_event_log(priv, next_entry,
1653                                                 capacity - next_entry, mode,
1654                                                 pos, buf, bufsz);
1655                 /* (then/else) start at top of log */
1656                 pos = iwl_print_event_log(priv, 0,
1657                                           next_entry, mode, pos, buf, bufsz);
1658         } else
1659                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1660                                                 next_entry, size, mode,
1661                                                 pos, buf, bufsz);
1662 #else
1663         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1664                                         next_entry, size, mode,
1665                                         pos, buf, bufsz);
1666 #endif
1667         return pos;
1668 }
1669
1670 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1671 {
1672         struct iwl_ct_kill_config cmd;
1673         struct iwl_ct_kill_throttling_config adv_cmd;
1674         unsigned long flags;
1675         int ret = 0;
1676
1677         spin_lock_irqsave(&priv->lock, flags);
1678         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1679                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1680         spin_unlock_irqrestore(&priv->lock, flags);
1681         priv->thermal_throttle.ct_kill_toggle = false;
1682
1683         if (priv->cfg->base_params->support_ct_kill_exit) {
1684                 adv_cmd.critical_temperature_enter =
1685                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1686                 adv_cmd.critical_temperature_exit =
1687                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1688
1689                 ret = trans_send_cmd_pdu(&priv->trans,
1690                                        REPLY_CT_KILL_CONFIG_CMD,
1691                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1692                 if (ret)
1693                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1694                 else
1695                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1696                                         "succeeded, "
1697                                         "critical temperature enter is %d,"
1698                                         "exit is %d\n",
1699                                        priv->hw_params.ct_kill_threshold,
1700                                        priv->hw_params.ct_kill_exit_threshold);
1701         } else {
1702                 cmd.critical_temperature_R =
1703                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
1704
1705                 ret = trans_send_cmd_pdu(&priv->trans,
1706                                        REPLY_CT_KILL_CONFIG_CMD,
1707                                        CMD_SYNC, sizeof(cmd), &cmd);
1708                 if (ret)
1709                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1710                 else
1711                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1712                                         "succeeded, "
1713                                         "critical temperature is %d\n",
1714                                         priv->hw_params.ct_kill_threshold);
1715         }
1716 }
1717
1718 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1719 {
1720         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1721         struct iwl_host_cmd cmd = {
1722                 .id = CALIBRATION_CFG_CMD,
1723                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1724                 .data = { &calib_cfg_cmd, },
1725         };
1726
1727         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1728         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1729         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1730
1731         return trans_send_cmd(&priv->trans, &cmd);
1732 }
1733
1734
1735 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1736 {
1737         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1738           .valid = cpu_to_le32(valid_tx_ant),
1739         };
1740
1741         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1742                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1743                 return trans_send_cmd_pdu(&priv->trans,
1744                                         TX_ANT_CONFIGURATION_CMD,
1745                                         CMD_SYNC,
1746                                         sizeof(struct iwl_tx_ant_config_cmd),
1747                                         &tx_ant_cmd);
1748         } else {
1749                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1750                 return -EOPNOTSUPP;
1751         }
1752 }
1753
1754 /**
1755  * iwl_alive_start - called after REPLY_ALIVE notification received
1756  *                   from protocol/runtime uCode (initialization uCode's
1757  *                   Alive gets handled by iwl_init_alive_start()).
1758  */
1759 int iwl_alive_start(struct iwl_priv *priv)
1760 {
1761         int ret = 0;
1762         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1763
1764         /*TODO: this should go to the transport layer */
1765         iwl_reset_ict(priv);
1766
1767         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1768
1769         /* After the ALIVE response, we can send host commands to the uCode */
1770         set_bit(STATUS_ALIVE, &priv->status);
1771
1772         /* Enable watchdog to monitor the driver tx queues */
1773         iwl_setup_watchdog(priv);
1774
1775         if (iwl_is_rfkill(priv))
1776                 return -ERFKILL;
1777
1778         /* download priority table before any calibration request */
1779         if (priv->cfg->bt_params &&
1780             priv->cfg->bt_params->advanced_bt_coexist) {
1781                 /* Configure Bluetooth device coexistence support */
1782                 if (priv->cfg->bt_params->bt_sco_disable)
1783                         priv->bt_enable_pspoll = false;
1784                 else
1785                         priv->bt_enable_pspoll = true;
1786
1787                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1788                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1789                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1790                 iwlagn_send_advance_bt_config(priv);
1791                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1792                 priv->cur_rssi_ctx = NULL;
1793
1794                 iwlagn_send_prio_tbl(priv);
1795
1796                 /* FIXME: w/a to force change uCode BT state machine */
1797                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
1798                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1799                 if (ret)
1800                         return ret;
1801                 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
1802                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1803                 if (ret)
1804                         return ret;
1805         } else {
1806                 /*
1807                  * default is 2-wire BT coexexistence support
1808                  */
1809                 iwl_send_bt_config(priv);
1810         }
1811
1812         if (priv->hw_params.calib_rt_cfg)
1813                 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
1814
1815         ieee80211_wake_queues(priv->hw);
1816
1817         priv->active_rate = IWL_RATES_MASK;
1818
1819         /* Configure Tx antenna selection based on H/W config */
1820         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1821
1822         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
1823                 struct iwl_rxon_cmd *active_rxon =
1824                                 (struct iwl_rxon_cmd *)&ctx->active;
1825                 /* apply any changes in staging */
1826                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1827                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1828         } else {
1829                 struct iwl_rxon_context *tmp;
1830                 /* Initialize our rx_config data */
1831                 for_each_context(priv, tmp)
1832                         iwl_connection_init_rx_config(priv, tmp);
1833
1834                 iwlagn_set_rxon_chain(priv, ctx);
1835         }
1836
1837         if (!priv->wowlan) {
1838                 /* WoWLAN ucode will not reply in the same way, skip it */
1839                 iwl_reset_run_time_calib(priv);
1840         }
1841
1842         set_bit(STATUS_READY, &priv->status);
1843
1844         /* Configure the adapter for unassociated operation */
1845         ret = iwlagn_commit_rxon(priv, ctx);
1846         if (ret)
1847                 return ret;
1848
1849         /* At this point, the NIC is initialized and operational */
1850         iwl_rf_kill_ct_config(priv);
1851
1852         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1853
1854         return iwl_power_update_mode(priv, true);
1855 }
1856
1857 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1858
1859 static void __iwl_down(struct iwl_priv *priv)
1860 {
1861         int exit_pending;
1862
1863         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1864
1865         iwl_scan_cancel_timeout(priv, 200);
1866
1867         /*
1868          * If active, scanning won't cancel it, so say it expired.
1869          * No race since we hold the mutex here and a new one
1870          * can't come in at this time.
1871          */
1872         ieee80211_remain_on_channel_expired(priv->hw);
1873
1874         exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
1875
1876         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1877          * to prevent rearm timer */
1878         del_timer_sync(&priv->watchdog);
1879
1880         iwl_clear_ucode_stations(priv, NULL);
1881         iwl_dealloc_bcast_stations(priv);
1882         iwl_clear_driver_stations(priv);
1883
1884         /* reset BT coex data */
1885         priv->bt_status = 0;
1886         priv->cur_rssi_ctx = NULL;
1887         priv->bt_is_sco = 0;
1888         if (priv->cfg->bt_params)
1889                 priv->bt_traffic_load =
1890                          priv->cfg->bt_params->bt_init_traffic_load;
1891         else
1892                 priv->bt_traffic_load = 0;
1893         priv->bt_full_concurrent = false;
1894         priv->bt_ci_compliance = 0;
1895
1896         /* Wipe out the EXIT_PENDING status bit if we are not actually
1897          * exiting the module */
1898         if (!exit_pending)
1899                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1900
1901         if (priv->mac80211_registered)
1902                 ieee80211_stop_queues(priv->hw);
1903
1904         /* Clear out all status bits but a few that are stable across reset */
1905         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1906                                 STATUS_RF_KILL_HW |
1907                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1908                                 STATUS_GEO_CONFIGURED |
1909                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1910                                 STATUS_FW_ERROR |
1911                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1912                                 STATUS_EXIT_PENDING;
1913
1914         trans_stop_device(&priv->trans);
1915
1916         dev_kfree_skb(priv->beacon_skb);
1917         priv->beacon_skb = NULL;
1918 }
1919
1920 static void iwl_down(struct iwl_priv *priv)
1921 {
1922         mutex_lock(&priv->mutex);
1923         __iwl_down(priv);
1924         mutex_unlock(&priv->mutex);
1925
1926         iwl_cancel_deferred_work(priv);
1927 }
1928
1929 #define MAX_HW_RESTARTS 5
1930
1931 static int __iwl_up(struct iwl_priv *priv)
1932 {
1933         struct iwl_rxon_context *ctx;
1934         int ret;
1935
1936         lockdep_assert_held(&priv->mutex);
1937
1938         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1939                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
1940                 return -EIO;
1941         }
1942
1943         for_each_context(priv, ctx) {
1944                 ret = iwlagn_alloc_bcast_station(priv, ctx);
1945                 if (ret) {
1946                         iwl_dealloc_bcast_stations(priv);
1947                         return ret;
1948                 }
1949         }
1950
1951         ret = iwlagn_run_init_ucode(priv);
1952         if (ret) {
1953                 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
1954                 goto error;
1955         }
1956
1957         ret = iwlagn_load_ucode_wait_alive(priv,
1958                                            &priv->ucode_rt,
1959                                            IWL_UCODE_REGULAR);
1960         if (ret) {
1961                 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
1962                 goto error;
1963         }
1964
1965         ret = iwl_alive_start(priv);
1966         if (ret)
1967                 goto error;
1968         return 0;
1969
1970  error:
1971         set_bit(STATUS_EXIT_PENDING, &priv->status);
1972         __iwl_down(priv);
1973         clear_bit(STATUS_EXIT_PENDING, &priv->status);
1974
1975         IWL_ERR(priv, "Unable to initialize device.\n");
1976         return ret;
1977 }
1978
1979
1980 /*****************************************************************************
1981  *
1982  * Workqueue callbacks
1983  *
1984  *****************************************************************************/
1985
1986 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1987 {
1988         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1989                         run_time_calib_work);
1990
1991         mutex_lock(&priv->mutex);
1992
1993         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
1994             test_bit(STATUS_SCANNING, &priv->status)) {
1995                 mutex_unlock(&priv->mutex);
1996                 return;
1997         }
1998
1999         if (priv->start_calib) {
2000                 iwl_chain_noise_calibration(priv);
2001                 iwl_sensitivity_calibration(priv);
2002         }
2003
2004         mutex_unlock(&priv->mutex);
2005 }
2006
2007 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2008 {
2009         struct iwl_rxon_context *ctx;
2010         bool bt_full_concurrent;
2011         u8 bt_ci_compliance;
2012         u8 bt_load;
2013         u8 bt_status;
2014         bool bt_is_sco;
2015
2016         lockdep_assert_held(&priv->mutex);
2017
2018         for_each_context(priv, ctx)
2019                 ctx->vif = NULL;
2020         priv->is_open = 0;
2021
2022         /*
2023          * __iwl_down() will clear the BT status variables,
2024          * which is correct, but when we restart we really
2025          * want to keep them so restore them afterwards.
2026          *
2027          * The restart process will later pick them up and
2028          * re-configure the hw when we reconfigure the BT
2029          * command.
2030          */
2031         bt_full_concurrent = priv->bt_full_concurrent;
2032         bt_ci_compliance = priv->bt_ci_compliance;
2033         bt_load = priv->bt_traffic_load;
2034         bt_status = priv->bt_status;
2035         bt_is_sco = priv->bt_is_sco;
2036
2037         __iwl_down(priv);
2038
2039         priv->bt_full_concurrent = bt_full_concurrent;
2040         priv->bt_ci_compliance = bt_ci_compliance;
2041         priv->bt_traffic_load = bt_load;
2042         priv->bt_status = bt_status;
2043         priv->bt_is_sco = bt_is_sco;
2044 }
2045
2046 static void iwl_bg_restart(struct work_struct *data)
2047 {
2048         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2049
2050         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2051                 return;
2052
2053         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2054                 mutex_lock(&priv->mutex);
2055                 iwlagn_prepare_restart(priv);
2056                 mutex_unlock(&priv->mutex);
2057                 iwl_cancel_deferred_work(priv);
2058                 ieee80211_restart_hw(priv->hw);
2059         } else {
2060                 WARN_ON(1);
2061         }
2062 }
2063
2064 /*****************************************************************************
2065  *
2066  * mac80211 entry point functions
2067  *
2068  *****************************************************************************/
2069
2070 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2071         {
2072                 .max = 1,
2073                 .types = BIT(NL80211_IFTYPE_STATION),
2074         },
2075         {
2076                 .max = 1,
2077                 .types = BIT(NL80211_IFTYPE_AP),
2078         },
2079 };
2080
2081 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2082         {
2083                 .max = 2,
2084                 .types = BIT(NL80211_IFTYPE_STATION),
2085         },
2086 };
2087
2088 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2089         {
2090                 .max = 1,
2091                 .types = BIT(NL80211_IFTYPE_STATION),
2092         },
2093         {
2094                 .max = 1,
2095                 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2096                          BIT(NL80211_IFTYPE_AP),
2097         },
2098 };
2099
2100 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2101         {
2102                 .max = 2,
2103                 .types = BIT(NL80211_IFTYPE_STATION),
2104         },
2105         {
2106                 .max = 1,
2107                 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2108         },
2109 };
2110
2111 static const struct ieee80211_iface_combination
2112 iwlagn_iface_combinations_dualmode[] = {
2113         { .num_different_channels = 1,
2114           .max_interfaces = 2,
2115           .beacon_int_infra_match = true,
2116           .limits = iwlagn_sta_ap_limits,
2117           .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2118         },
2119         { .num_different_channels = 1,
2120           .max_interfaces = 2,
2121           .limits = iwlagn_2sta_limits,
2122           .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2123         },
2124 };
2125
2126 static const struct ieee80211_iface_combination
2127 iwlagn_iface_combinations_p2p[] = {
2128         { .num_different_channels = 1,
2129           .max_interfaces = 2,
2130           .beacon_int_infra_match = true,
2131           .limits = iwlagn_p2p_sta_go_limits,
2132           .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2133         },
2134         { .num_different_channels = 1,
2135           .max_interfaces = 2,
2136           .limits = iwlagn_p2p_2sta_limits,
2137           .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2138         },
2139 };
2140
2141 /*
2142  * Not a mac80211 entry point function, but it fits in with all the
2143  * other mac80211 functions grouped here.
2144  */
2145 static int iwl_mac_setup_register(struct iwl_priv *priv,
2146                                   struct iwlagn_ucode_capabilities *capa)
2147 {
2148         int ret;
2149         struct ieee80211_hw *hw = priv->hw;
2150         struct iwl_rxon_context *ctx;
2151
2152         hw->rate_control_algorithm = "iwl-agn-rs";
2153
2154         /* Tell mac80211 our characteristics */
2155         hw->flags = IEEE80211_HW_SIGNAL_DBM |
2156                     IEEE80211_HW_AMPDU_AGGREGATION |
2157                     IEEE80211_HW_NEED_DTIM_PERIOD |
2158                     IEEE80211_HW_SPECTRUM_MGMT |
2159                     IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2160
2161         hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2162
2163         hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2164                      IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2165
2166         if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2167                 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2168                              IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2169
2170         if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2171                 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2172
2173         hw->sta_data_size = sizeof(struct iwl_station_priv);
2174         hw->vif_data_size = sizeof(struct iwl_vif_priv);
2175
2176         for_each_context(priv, ctx) {
2177                 hw->wiphy->interface_modes |= ctx->interface_modes;
2178                 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2179         }
2180
2181         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2182
2183         if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2184                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2185                 hw->wiphy->n_iface_combinations =
2186                         ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2187         } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2188                 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2189                 hw->wiphy->n_iface_combinations =
2190                         ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2191         }
2192
2193         hw->wiphy->max_remain_on_channel_duration = 1000;
2194
2195         hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2196                             WIPHY_FLAG_DISABLE_BEACON_HINTS |
2197                             WIPHY_FLAG_IBSS_RSN;
2198
2199         if (priv->ucode_wowlan.code.len && device_can_wakeup(priv->bus->dev)) {
2200                 hw->wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
2201                                           WIPHY_WOWLAN_DISCONNECT |
2202                                           WIPHY_WOWLAN_EAP_IDENTITY_REQ |
2203                                           WIPHY_WOWLAN_RFKILL_RELEASE;
2204                 if (!iwlagn_mod_params.sw_crypto)
2205                         hw->wiphy->wowlan.flags |=
2206                                 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
2207                                 WIPHY_WOWLAN_GTK_REKEY_FAILURE;
2208
2209                 hw->wiphy->wowlan.n_patterns = IWLAGN_WOWLAN_MAX_PATTERNS;
2210                 hw->wiphy->wowlan.pattern_min_len =
2211                                         IWLAGN_WOWLAN_MIN_PATTERN_LEN;
2212                 hw->wiphy->wowlan.pattern_max_len =
2213                                         IWLAGN_WOWLAN_MAX_PATTERN_LEN;
2214         }
2215
2216         if (iwlagn_mod_params.power_save)
2217                 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2218         else
2219                 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2220
2221         hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2222         /* we create the 802.11 header and a zero-length SSID element */
2223         hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2224
2225         /* Default value; 4 EDCA QOS priorities */
2226         hw->queues = 4;
2227
2228         hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2229
2230         if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2231                 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2232                         &priv->bands[IEEE80211_BAND_2GHZ];
2233         if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2234                 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2235                         &priv->bands[IEEE80211_BAND_5GHZ];
2236
2237         iwl_leds_init(priv);
2238
2239         ret = ieee80211_register_hw(priv->hw);
2240         if (ret) {
2241                 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2242                 return ret;
2243         }
2244         priv->mac80211_registered = 1;
2245
2246         return 0;
2247 }
2248
2249
2250 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2251 {
2252         struct iwl_priv *priv = hw->priv;
2253         int ret;
2254
2255         IWL_DEBUG_MAC80211(priv, "enter\n");
2256
2257         /* we should be verifying the device is ready to be opened */
2258         mutex_lock(&priv->mutex);
2259         ret = __iwl_up(priv);
2260         mutex_unlock(&priv->mutex);
2261         if (ret)
2262                 return ret;
2263
2264         IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2265
2266         /* Now we should be done, and the READY bit should be set. */
2267         if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2268                 ret = -EIO;
2269
2270         iwlagn_led_enable(priv);
2271
2272         priv->is_open = 1;
2273         IWL_DEBUG_MAC80211(priv, "leave\n");
2274         return 0;
2275 }
2276
2277 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2278 {
2279         struct iwl_priv *priv = hw->priv;
2280
2281         IWL_DEBUG_MAC80211(priv, "enter\n");
2282
2283         if (!priv->is_open)
2284                 return;
2285
2286         priv->is_open = 0;
2287
2288         iwl_down(priv);
2289
2290         flush_workqueue(priv->workqueue);
2291
2292         /* User space software may expect getting rfkill changes
2293          * even if interface is down */
2294         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2295         iwl_enable_rfkill_int(priv);
2296
2297         IWL_DEBUG_MAC80211(priv, "leave\n");
2298 }
2299
2300 #ifdef CONFIG_PM
2301 static int iwlagn_send_patterns(struct iwl_priv *priv,
2302                                 struct cfg80211_wowlan *wowlan)
2303 {
2304         struct iwlagn_wowlan_patterns_cmd *pattern_cmd;
2305         struct iwl_host_cmd cmd = {
2306                 .id = REPLY_WOWLAN_PATTERNS,
2307                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2308                 .flags = CMD_SYNC,
2309         };
2310         int i, err;
2311
2312         if (!wowlan->n_patterns)
2313                 return 0;
2314
2315         cmd.len[0] = sizeof(*pattern_cmd) +
2316                         wowlan->n_patterns * sizeof(struct iwlagn_wowlan_pattern);
2317
2318         pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
2319         if (!pattern_cmd)
2320                 return -ENOMEM;
2321
2322         pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
2323
2324         for (i = 0; i < wowlan->n_patterns; i++) {
2325                 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
2326
2327                 memcpy(&pattern_cmd->patterns[i].mask,
2328                         wowlan->patterns[i].mask, mask_len);
2329                 memcpy(&pattern_cmd->patterns[i].pattern,
2330                         wowlan->patterns[i].pattern,
2331                         wowlan->patterns[i].pattern_len);
2332                 pattern_cmd->patterns[i].mask_size = mask_len;
2333                 pattern_cmd->patterns[i].pattern_size =
2334                         wowlan->patterns[i].pattern_len;
2335         }
2336
2337         cmd.data[0] = pattern_cmd;
2338         err = trans_send_cmd(&priv->trans, &cmd);
2339         kfree(pattern_cmd);
2340         return err;
2341 }
2342 #endif
2343
2344 static void iwlagn_mac_set_rekey_data(struct ieee80211_hw *hw,
2345                                       struct ieee80211_vif *vif,
2346                                       struct cfg80211_gtk_rekey_data *data)
2347 {
2348         struct iwl_priv *priv = hw->priv;
2349
2350         if (iwlagn_mod_params.sw_crypto)
2351                 return;
2352
2353         mutex_lock(&priv->mutex);
2354
2355         if (priv->contexts[IWL_RXON_CTX_BSS].vif != vif)
2356                 goto out;
2357
2358         memcpy(priv->kek, data->kek, NL80211_KEK_LEN);
2359         memcpy(priv->kck, data->kck, NL80211_KCK_LEN);
2360         priv->replay_ctr = cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
2361         priv->have_rekey_data = true;
2362
2363  out:
2364         mutex_unlock(&priv->mutex);
2365 }
2366
2367 struct wowlan_key_data {
2368         struct iwl_rxon_context *ctx;
2369         struct iwlagn_wowlan_rsc_tsc_params_cmd *rsc_tsc;
2370         struct iwlagn_wowlan_tkip_params_cmd *tkip;
2371         const u8 *bssid;
2372         bool error, use_rsc_tsc, use_tkip;
2373 };
2374
2375 #ifdef CONFIG_PM
2376 static void iwlagn_convert_p1k(u16 *p1k, __le16 *out)
2377 {
2378         int i;
2379
2380         for (i = 0; i < IWLAGN_P1K_SIZE; i++)
2381                 out[i] = cpu_to_le16(p1k[i]);
2382 }
2383
2384 static void iwlagn_wowlan_program_keys(struct ieee80211_hw *hw,
2385                                        struct ieee80211_vif *vif,
2386                                        struct ieee80211_sta *sta,
2387                                        struct ieee80211_key_conf *key,
2388                                        void *_data)
2389 {
2390         struct iwl_priv *priv = hw->priv;
2391         struct wowlan_key_data *data = _data;
2392         struct iwl_rxon_context *ctx = data->ctx;
2393         struct aes_sc *aes_sc, *aes_tx_sc = NULL;
2394         struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
2395         struct iwlagn_p1k_cache *rx_p1ks;
2396         u8 *rx_mic_key;
2397         struct ieee80211_key_seq seq;
2398         u32 cur_rx_iv32 = 0;
2399         u16 p1k[IWLAGN_P1K_SIZE];
2400         int ret, i;
2401
2402         mutex_lock(&priv->mutex);
2403
2404         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2405              key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2406              !sta && !ctx->key_mapping_keys)
2407                 ret = iwl_set_default_wep_key(priv, ctx, key);
2408         else
2409                 ret = iwl_set_dynamic_key(priv, ctx, key, sta);
2410
2411         if (ret) {
2412                 IWL_ERR(priv, "Error setting key during suspend!\n");
2413                 data->error = true;
2414         }
2415
2416         switch (key->cipher) {
2417         case WLAN_CIPHER_SUITE_TKIP:
2418                 if (sta) {
2419                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
2420                         tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
2421
2422                         rx_p1ks = data->tkip->rx_uni;
2423
2424                         ieee80211_get_key_tx_seq(key, &seq);
2425                         tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
2426                         tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
2427
2428                         ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
2429                         iwlagn_convert_p1k(p1k, data->tkip->tx.p1k);
2430
2431                         memcpy(data->tkip->mic_keys.tx,
2432                                &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
2433                                IWLAGN_MIC_KEY_SIZE);
2434
2435                         rx_mic_key = data->tkip->mic_keys.rx_unicast;
2436                 } else {
2437                         tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
2438                         rx_p1ks = data->tkip->rx_multi;
2439                         rx_mic_key = data->tkip->mic_keys.rx_mcast;
2440                 }
2441
2442                 /*
2443                  * For non-QoS this relies on the fact that both the uCode and
2444                  * mac80211 use TID 0 (as they need to to avoid replay attacks)
2445                  * for checking the IV in the frames.
2446                  */
2447                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2448                         ieee80211_get_key_rx_seq(key, i, &seq);
2449                         tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
2450                         tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
2451                         /* wrapping isn't allowed, AP must rekey */
2452                         if (seq.tkip.iv32 > cur_rx_iv32)
2453                                 cur_rx_iv32 = seq.tkip.iv32;
2454                 }
2455
2456                 ieee80211_get_tkip_rx_p1k(key, data->bssid, cur_rx_iv32, p1k);
2457                 iwlagn_convert_p1k(p1k, rx_p1ks[0].p1k);
2458                 ieee80211_get_tkip_rx_p1k(key, data->bssid,
2459                                           cur_rx_iv32 + 1, p1k);
2460                 iwlagn_convert_p1k(p1k, rx_p1ks[1].p1k);
2461
2462                 memcpy(rx_mic_key,
2463                        &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
2464                        IWLAGN_MIC_KEY_SIZE);
2465
2466                 data->use_tkip = true;
2467                 data->use_rsc_tsc = true;
2468                 break;
2469         case WLAN_CIPHER_SUITE_CCMP:
2470                 if (sta) {
2471                         u8 *pn = seq.ccmp.pn;
2472
2473                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
2474                         aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
2475
2476                         ieee80211_get_key_tx_seq(key, &seq);
2477                         aes_tx_sc->pn = cpu_to_le64(
2478                                         (u64)pn[5] |
2479                                         ((u64)pn[4] << 8) |
2480                                         ((u64)pn[3] << 16) |
2481                                         ((u64)pn[2] << 24) |
2482                                         ((u64)pn[1] << 32) |
2483                                         ((u64)pn[0] << 40));
2484                 } else
2485                         aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
2486
2487                 /*
2488                  * For non-QoS this relies on the fact that both the uCode and
2489                  * mac80211 use TID 0 for checking the IV in the frames.
2490                  */
2491                 for (i = 0; i < IWLAGN_NUM_RSC; i++) {
2492                         u8 *pn = seq.ccmp.pn;
2493
2494                         ieee80211_get_key_rx_seq(key, i, &seq);
2495                         aes_sc->pn = cpu_to_le64(
2496                                         (u64)pn[5] |
2497                                         ((u64)pn[4] << 8) |
2498                                         ((u64)pn[3] << 16) |
2499                                         ((u64)pn[2] << 24) |
2500                                         ((u64)pn[1] << 32) |
2501                                         ((u64)pn[0] << 40));
2502                 }
2503                 data->use_rsc_tsc = true;
2504                 break;
2505         }
2506
2507         mutex_unlock(&priv->mutex);
2508 }
2509
2510 static int iwlagn_mac_suspend(struct ieee80211_hw *hw,
2511                               struct cfg80211_wowlan *wowlan)
2512 {
2513         struct iwl_priv *priv = hw->priv;
2514         struct iwlagn_wowlan_wakeup_filter_cmd wakeup_filter_cmd;
2515         struct iwl_rxon_cmd rxon;
2516         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2517         struct iwlagn_wowlan_kek_kck_material_cmd kek_kck_cmd;
2518         struct iwlagn_wowlan_tkip_params_cmd tkip_cmd = {};
2519         struct wowlan_key_data key_data = {
2520                 .ctx = ctx,
2521                 .bssid = ctx->active.bssid_addr,
2522                 .use_rsc_tsc = false,
2523                 .tkip = &tkip_cmd,
2524                 .use_tkip = false,
2525         };
2526         int ret, i;
2527         u16 seq;
2528
2529         if (WARN_ON(!wowlan))
2530                 return -EINVAL;
2531
2532         mutex_lock(&priv->mutex);
2533
2534         /* Don't attempt WoWLAN when not associated, tear down instead. */
2535         if (!ctx->vif || ctx->vif->type != NL80211_IFTYPE_STATION ||
2536             !iwl_is_associated_ctx(ctx)) {
2537                 ret = 1;
2538                 goto out;
2539         }
2540
2541         key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
2542         if (!key_data.rsc_tsc) {
2543                 ret = -ENOMEM;
2544                 goto out;
2545         }
2546
2547         memset(&wakeup_filter_cmd, 0, sizeof(wakeup_filter_cmd));
2548
2549         /*
2550          * We know the last used seqno, and the uCode expects to know that
2551          * one, it will increment before TX.
2552          */
2553         seq = le16_to_cpu(priv->last_seq_ctl) & IEEE80211_SCTL_SEQ;
2554         wakeup_filter_cmd.non_qos_seq = cpu_to_le16(seq);
2555
2556         /*
2557          * For QoS counters, we store the one to use next, so subtract 0x10
2558          * since the uCode will add 0x10 before using the value.
2559          */
2560         for (i = 0; i < 8; i++) {
2561                 seq = priv->stations[IWL_AP_ID].tid[i].seq_number;
2562                 seq -= 0x10;
2563                 wakeup_filter_cmd.qos_seq[i] = cpu_to_le16(seq);
2564         }
2565
2566         if (wowlan->disconnect)
2567                 wakeup_filter_cmd.enabled |=
2568                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_BEACON_MISS |
2569                                     IWLAGN_WOWLAN_WAKEUP_LINK_CHANGE);
2570         if (wowlan->magic_pkt)
2571                 wakeup_filter_cmd.enabled |=
2572                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_MAGIC_PACKET);
2573         if (wowlan->gtk_rekey_failure)
2574                 wakeup_filter_cmd.enabled |=
2575                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
2576         if (wowlan->eap_identity_req)
2577                 wakeup_filter_cmd.enabled |=
2578                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_EAP_IDENT_REQ);
2579         if (wowlan->four_way_handshake)
2580                 wakeup_filter_cmd.enabled |=
2581                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
2582         if (wowlan->rfkill_release)
2583                 wakeup_filter_cmd.enabled |=
2584                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_RFKILL);
2585         if (wowlan->n_patterns)
2586                 wakeup_filter_cmd.enabled |=
2587                         cpu_to_le32(IWLAGN_WOWLAN_WAKEUP_PATTERN_MATCH);
2588
2589         iwl_scan_cancel_timeout(priv, 200);
2590
2591         memcpy(&rxon, &ctx->active, sizeof(rxon));
2592
2593         trans_stop_device(&priv->trans);
2594
2595         priv->wowlan = true;
2596
2597         ret = iwlagn_load_ucode_wait_alive(priv, &priv->ucode_wowlan,
2598                                            IWL_UCODE_WOWLAN);
2599         if (ret)
2600                 goto error;
2601
2602         /* now configure WoWLAN ucode */
2603         ret = iwl_alive_start(priv);
2604         if (ret)
2605                 goto error;
2606
2607         memcpy(&ctx->staging, &rxon, sizeof(rxon));
2608         ret = iwlagn_commit_rxon(priv, ctx);
2609         if (ret)
2610                 goto error;
2611
2612         ret = iwl_power_update_mode(priv, true);
2613         if (ret)
2614                 goto error;
2615
2616         if (!iwlagn_mod_params.sw_crypto) {
2617                 /* mark all keys clear */
2618                 priv->ucode_key_table = 0;
2619                 ctx->key_mapping_keys = 0;
2620
2621                 /*
2622                  * This needs to be unlocked due to lock ordering
2623                  * constraints. Since we're in the suspend path
2624                  * that isn't really a problem though.
2625                  */
2626                 mutex_unlock(&priv->mutex);
2627                 ieee80211_iter_keys(priv->hw, ctx->vif,
2628                                     iwlagn_wowlan_program_keys,
2629                                     &key_data);
2630                 mutex_lock(&priv->mutex);
2631                 if (key_data.error) {
2632                         ret = -EIO;
2633                         goto error;
2634                 }
2635
2636                 if (key_data.use_rsc_tsc) {
2637                         struct iwl_host_cmd rsc_tsc_cmd = {
2638                                 .id = REPLY_WOWLAN_TSC_RSC_PARAMS,
2639                                 .flags = CMD_SYNC,
2640                                 .data[0] = key_data.rsc_tsc,
2641                                 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
2642                                 .len[0] = sizeof(*key_data.rsc_tsc),
2643                         };
2644
2645                         ret = trans_send_cmd(&priv->trans, &rsc_tsc_cmd);
2646                         if (ret)
2647                                 goto error;
2648                 }
2649
2650                 if (key_data.use_tkip) {
2651                         ret = trans_send_cmd_pdu(&priv->trans,
2652                                                  REPLY_WOWLAN_TKIP_PARAMS,
2653                                                  CMD_SYNC, sizeof(tkip_cmd),
2654                                                  &tkip_cmd);
2655                         if (ret)
2656                                 goto error;
2657                 }
2658
2659                 if (priv->have_rekey_data) {
2660                         memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
2661                         memcpy(kek_kck_cmd.kck, priv->kck, NL80211_KCK_LEN);
2662                         kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
2663                         memcpy(kek_kck_cmd.kek, priv->kek, NL80211_KEK_LEN);
2664                         kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
2665                         kek_kck_cmd.replay_ctr = priv->replay_ctr;
2666
2667                         ret = trans_send_cmd_pdu(&priv->trans,
2668                                                  REPLY_WOWLAN_KEK_KCK_MATERIAL,
2669                                                  CMD_SYNC, sizeof(kek_kck_cmd),
2670                                                  &kek_kck_cmd);
2671                         if (ret)
2672                                 goto error;
2673                 }
2674         }
2675
2676         ret = trans_send_cmd_pdu(&priv->trans, REPLY_WOWLAN_WAKEUP_FILTER,
2677                                  CMD_SYNC, sizeof(wakeup_filter_cmd),
2678                                  &wakeup_filter_cmd);
2679         if (ret)
2680                 goto error;
2681
2682         ret = iwlagn_send_patterns(priv, wowlan);
2683         if (ret)
2684                 goto error;
2685
2686         device_set_wakeup_enable(priv->bus->dev, true);
2687
2688         /* Now let the ucode operate on its own */
2689         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2690                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2691
2692         goto out;
2693
2694  error:
2695         priv->wowlan = false;
2696         iwlagn_prepare_restart(priv);
2697         ieee80211_restart_hw(priv->hw);
2698  out:
2699         mutex_unlock(&priv->mutex);
2700         kfree(key_data.rsc_tsc);
2701         return ret;
2702 }
2703
2704 static int iwlagn_mac_resume(struct ieee80211_hw *hw)
2705 {
2706         struct iwl_priv *priv = hw->priv;
2707         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2708         struct ieee80211_vif *vif;
2709         unsigned long flags;
2710         u32 base, status = 0xffffffff;
2711         int ret = -EIO;
2712
2713         mutex_lock(&priv->mutex);
2714
2715         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2716                           CSR_UCODE_DRV_GP1_BIT_D3_CFG_COMPLETE);
2717
2718         base = priv->device_pointers.error_event_table;
2719         if (iwlagn_hw_valid_rtc_data_addr(base)) {
2720                 spin_lock_irqsave(&priv->reg_lock, flags);
2721                 ret = iwl_grab_nic_access_silent(priv);
2722                 if (ret == 0) {
2723                         iwl_write32(priv, HBUS_TARG_MEM_RADDR, base);
2724                         status = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
2725                         iwl_release_nic_access(priv);
2726                 }
2727                 spin_unlock_irqrestore(&priv->reg_lock, flags);
2728
2729 #ifdef CONFIG_IWLWIFI_DEBUGFS
2730                 if (ret == 0) {
2731                         if (!priv->wowlan_sram)
2732                                 priv->wowlan_sram =
2733                                         kzalloc(priv->ucode_wowlan.data.len,
2734                                                 GFP_KERNEL);
2735
2736                         if (priv->wowlan_sram)
2737                                 _iwl_read_targ_mem_words(
2738                                         priv, 0x800000, priv->wowlan_sram,
2739                                         priv->ucode_wowlan.data.len / 4);
2740                 }
2741 #endif
2742         }
2743
2744         /* we'll clear ctx->vif during iwlagn_prepare_restart() */
2745         vif = ctx->vif;
2746
2747         priv->wowlan = false;
2748
2749         device_set_wakeup_enable(priv->bus->dev, false);
2750
2751         iwlagn_prepare_restart(priv);
2752
2753         memset((void *)&ctx->active, 0, sizeof(ctx->active));
2754         iwl_connection_init_rx_config(priv, ctx);
2755         iwlagn_set_rxon_chain(priv, ctx);
2756
2757         mutex_unlock(&priv->mutex);
2758
2759         ieee80211_resume_disconnect(vif);
2760
2761         return 1;
2762 }
2763 #endif
2764
2765 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2766 {
2767         struct iwl_priv *priv = hw->priv;
2768
2769         IWL_DEBUG_MACDUMP(priv, "enter\n");
2770
2771         IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2772                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2773
2774         if (iwlagn_tx_skb(priv, skb))
2775                 dev_kfree_skb_any(skb);
2776
2777         IWL_DEBUG_MACDUMP(priv, "leave\n");
2778 }
2779
2780 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2781                                        struct ieee80211_vif *vif,
2782                                        struct ieee80211_key_conf *keyconf,
2783                                        struct ieee80211_sta *sta,
2784                                        u32 iv32, u16 *phase1key)
2785 {
2786         struct iwl_priv *priv = hw->priv;
2787
2788         iwl_update_tkip_key(priv, vif, keyconf, sta, iv32, phase1key);
2789 }
2790
2791 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2792                               struct ieee80211_vif *vif,
2793                               struct ieee80211_sta *sta,
2794                               struct ieee80211_key_conf *key)
2795 {
2796         struct iwl_priv *priv = hw->priv;
2797         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2798         struct iwl_rxon_context *ctx = vif_priv->ctx;
2799         int ret;
2800         bool is_default_wep_key = false;
2801
2802         IWL_DEBUG_MAC80211(priv, "enter\n");
2803
2804         if (iwlagn_mod_params.sw_crypto) {
2805                 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2806                 return -EOPNOTSUPP;
2807         }
2808
2809         /*
2810          * We could program these keys into the hardware as well, but we
2811          * don't expect much multicast traffic in IBSS and having keys
2812          * for more stations is probably more useful.
2813          *
2814          * Mark key TX-only and return 0.
2815          */
2816         if (vif->type == NL80211_IFTYPE_ADHOC &&
2817             !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {
2818                 key->hw_key_idx = WEP_INVALID_OFFSET;
2819                 return 0;
2820         }
2821
2822         /* If they key was TX-only, accept deletion */
2823         if (cmd == DISABLE_KEY && key->hw_key_idx == WEP_INVALID_OFFSET)
2824                 return 0;
2825
2826         mutex_lock(&priv->mutex);
2827         iwl_scan_cancel_timeout(priv, 100);
2828
2829         BUILD_BUG_ON(WEP_INVALID_OFFSET == IWLAGN_HW_KEY_DEFAULT);
2830
2831         /*
2832          * If we are getting WEP group key and we didn't receive any key mapping
2833          * so far, we are in legacy wep mode (group key only), otherwise we are
2834          * in 1X mode.
2835          * In legacy wep mode, we use another host command to the uCode.
2836          */
2837         if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2838              key->cipher == WLAN_CIPHER_SUITE_WEP104) && !sta) {
2839                 if (cmd == SET_KEY)
2840                         is_default_wep_key = !ctx->key_mapping_keys;
2841                 else
2842                         is_default_wep_key =
2843                                 key->hw_key_idx == IWLAGN_HW_KEY_DEFAULT;
2844         }
2845
2846
2847         switch (cmd) {
2848         case SET_KEY:
2849                 if (is_default_wep_key) {
2850                         ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2851                         break;
2852                 }
2853                 ret = iwl_set_dynamic_key(priv, vif_priv->ctx, key, sta);
2854                 if (ret) {
2855                         /*
2856                          * can't add key for RX, but we don't need it
2857                          * in the device for TX so still return 0
2858                          */
2859                         ret = 0;
2860                         key->hw_key_idx = WEP_INVALID_OFFSET;
2861                 }
2862
2863                 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2864                 break;
2865         case DISABLE_KEY:
2866                 if (is_default_wep_key)
2867                         ret = iwl_remove_default_wep_key(priv, ctx, key);
2868                 else
2869                         ret = iwl_remove_dynamic_key(priv, ctx, key, sta);
2870
2871                 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2872                 break;
2873         default:
2874                 ret = -EINVAL;
2875         }
2876
2877         mutex_unlock(&priv->mutex);
2878         IWL_DEBUG_MAC80211(priv, "leave\n");
2879
2880         return ret;
2881 }
2882
2883 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2884                                    struct ieee80211_vif *vif,
2885                                    enum ieee80211_ampdu_mlme_action action,
2886                                    struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2887                                    u8 buf_size)
2888 {
2889         struct iwl_priv *priv = hw->priv;
2890         int ret = -EINVAL;
2891         struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2892
2893         IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2894                      sta->addr, tid);
2895
2896         if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2897                 return -EACCES;
2898
2899         mutex_lock(&priv->mutex);
2900
2901         switch (action) {
2902         case IEEE80211_AMPDU_RX_START:
2903                 IWL_DEBUG_HT(priv, "start Rx\n");
2904                 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2905                 break;
2906         case IEEE80211_AMPDU_RX_STOP:
2907                 IWL_DEBUG_HT(priv, "stop Rx\n");
2908                 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2909                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2910                         ret = 0;
2911                 break;
2912         case IEEE80211_AMPDU_TX_START:
2913                 IWL_DEBUG_HT(priv, "start Tx\n");
2914                 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2915                 if (ret == 0) {
2916                         priv->agg_tids_count++;
2917                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2918                                      priv->agg_tids_count);
2919                 }
2920                 break;
2921         case IEEE80211_AMPDU_TX_STOP:
2922                 IWL_DEBUG_HT(priv, "stop Tx\n");
2923                 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2924                 if ((ret == 0) && (priv->agg_tids_count > 0)) {
2925                         priv->agg_tids_count--;
2926                         IWL_DEBUG_HT(priv, "priv->agg_tids_count = %u\n",
2927                                      priv->agg_tids_count);
2928                 }
2929                 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2930                         ret = 0;
2931                 if (priv->cfg->ht_params &&
2932                     priv->cfg->ht_params->use_rts_for_aggregation) {
2933                         /*
2934                          * switch off RTS/CTS if it was previously enabled
2935                          */
2936                         sta_priv->lq_sta.lq.general_params.flags &=
2937                                 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2938                         iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2939                                         &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2940                 }
2941                 break;
2942         case IEEE80211_AMPDU_TX_OPERATIONAL:
2943                 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2944
2945                 trans_txq_agg_setup(&priv->trans, iwl_sta_id(sta), tid,
2946                                 buf_size);
2947
2948                 /*
2949                  * If the limit is 0, then it wasn't initialised yet,
2950                  * use the default. We can do that since we take the
2951                  * minimum below, and we don't want to go above our
2952                  * default due to hardware restrictions.
2953                  */
2954                 if (sta_priv->max_agg_bufsize == 0)
2955                         sta_priv->max_agg_bufsize =
2956                                 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2957
2958                 /*
2959                  * Even though in theory the peer could have different
2960                  * aggregation reorder buffer sizes for different sessions,
2961                  * our ucode doesn't allow for that and has a global limit
2962                  * for each station. Therefore, use the minimum of all the
2963                  * aggregation sessions and our default value.
2964                  */
2965                 sta_priv->max_agg_bufsize =
2966                         min(sta_priv->max_agg_bufsize, buf_size);
2967
2968                 if (priv->cfg->ht_params &&
2969                     priv->cfg->ht_params->use_rts_for_aggregation) {
2970                         /*
2971                          * switch to RTS/CTS if it is the prefer protection
2972                          * method for HT traffic
2973                          */
2974
2975                         sta_priv->lq_sta.lq.general_params.flags |=
2976                                 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2977                 }
2978
2979                 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2980                         sta_priv->max_agg_bufsize;
2981
2982                 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2983                                 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2984
2985                 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2986                          sta->addr, tid);
2987                 ret = 0;
2988                 break;
2989         }
2990         mutex_unlock(&priv->mutex);
2991
2992         return ret;
2993 }
2994
2995 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2996                               struct ieee80211_vif *vif,
2997                               struct ieee80211_sta *sta)
2998 {
2999         struct iwl_priv *priv = hw->priv;
3000         struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
3001         struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
3002         bool is_ap = vif->type == NL80211_IFTYPE_STATION;
3003         int ret;
3004         u8 sta_id;
3005
3006         IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
3007                         sta->addr);
3008         mutex_lock(&priv->mutex);
3009         IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
3010                         sta->addr);
3011         sta_priv->common.sta_id = IWL_INVALID_STATION;
3012
3013         atomic_set(&sta_priv->pending_frames, 0);
3014         if (vif->type == NL80211_IFTYPE_AP)
3015                 sta_priv->client = true;
3016
3017         ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
3018                                      is_ap, sta, &sta_id);
3019         if (ret) {
3020                 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
3021                         sta->addr, ret);
3022                 /* Should we return success if return code is EEXIST ? */
3023                 mutex_unlock(&priv->mutex);
3024                 return ret;
3025         }
3026
3027         sta_priv->common.sta_id = sta_id;
3028
3029         /* Initialize rate scaling */
3030         IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
3031                        sta->addr);
3032         iwl_rs_rate_init(priv, sta, sta_id);
3033         mutex_unlock(&priv->mutex);
3034
3035         return 0;
3036 }
3037
3038 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
3039                                 struct ieee80211_channel_switch *ch_switch)
3040 {
3041         struct iwl_priv *priv = hw->priv;
3042         const struct iwl_channel_info *ch_info;
3043         struct ieee80211_conf *conf = &hw->conf;
3044         struct ieee80211_channel *channel = ch_switch->channel;
3045         struct iwl_ht_config *ht_conf = &priv->current_ht_config;
3046         /*
3047          * MULTI-FIXME
3048          * When we add support for multiple interfaces, we need to
3049          * revisit this. The channel switch command in the device
3050          * only affects the BSS context, but what does that really
3051          * mean? And what if we get a CSA on the second interface?
3052          * This needs a lot of work.
3053          */
3054         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
3055         u16 ch;
3056
3057         IWL_DEBUG_MAC80211(priv, "enter\n");
3058
3059         mutex_lock(&priv->mutex);
3060
3061         if (iwl_is_rfkill(priv))
3062                 goto out;
3063
3064         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
3065             test_bit(STATUS_SCANNING, &priv->status) ||
3066             test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
3067                 goto out;
3068
3069         if (!iwl_is_associated_ctx(ctx))
3070                 goto out;
3071
3072         if (!priv->cfg->lib->set_channel_switch)
3073                 goto out;
3074
3075         ch = channel->hw_value;
3076         if (le16_to_cpu(ctx->active.channel) == ch)
3077                 goto out;
3078
3079         ch_info = iwl_get_channel_info(priv, channel->band, ch);
3080         if (!is_channel_valid(ch_info)) {
3081                 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
3082                 goto out;
3083         }
3084
3085         spin_lock_irq(&priv->lock);
3086
3087         priv->current_ht_config.smps = conf->smps_mode;
3088
3089         /* Configure HT40 channels */
3090         ctx->ht.enabled = conf_is_ht(conf);
3091         if (ctx->ht.enabled) {
3092                 if (conf_is_ht40_minus(conf)) {
3093                         ctx->ht.extension_chan_offset =
3094                                 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
3095                         ctx->ht.is_40mhz = true;
3096                 } else if (conf_is_ht40_plus(conf)) {
3097                         ctx->ht.extension_chan_offset =
3098                                 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
3099                         ctx->ht.is_40mhz = true;
3100                 } else {
3101                         ctx->ht.extension_chan_offset =
3102                                 IEEE80211_HT_PARAM_CHA_SEC_NONE;
3103                         ctx->ht.is_40mhz = false;
3104                 }
3105         } else
3106                 ctx->ht.is_40mhz = false;
3107
3108         if ((le16_to_cpu(ctx->staging.channel) != ch))
3109                 ctx->staging.flags = 0;
3110
3111         iwl_set_rxon_channel(priv, channel, ctx);
3112         iwl_set_rxon_ht(priv, ht_conf);
3113         iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
3114
3115         spin_unlock_irq(&priv->lock);
3116
3117         iwl_set_rate(priv);
3118         /*
3119          * at this point, staging_rxon has the
3120          * configuration for channel switch
3121          */
3122         set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3123         priv->switch_channel = cpu_to_le16(ch);
3124         if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
3125                 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
3126                 priv->switch_channel = 0;
3127                 ieee80211_chswitch_done(ctx->vif, false);
3128         }
3129
3130 out:
3131         mutex_unlock(&priv->mutex);
3132         IWL_DEBUG_MAC80211(priv, "leave\n");
3133 }
3134
3135 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3136                                     unsigned int changed_flags,
3137                                     unsigned int *total_flags,
3138                                     u64 multicast)
3139 {
3140         struct iwl_priv *priv = hw->priv;
3141         __le32 filter_or = 0, filter_nand = 0;
3142         struct iwl_rxon_context *ctx;
3143
3144 #define CHK(test, flag) do { \
3145         if (*total_flags & (test))              \
3146                 filter_or |= (flag);            \
3147         else                                    \
3148                 filter_nand |= (flag);          \
3149         } while (0)
3150
3151         IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3152                         changed_flags, *total_flags);
3153
3154         CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3155         /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3156         CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3157         CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3158
3159 #undef CHK
3160
3161         mutex_lock(&priv->mutex);
3162
3163         for_each_context(priv, ctx) {
3164                 ctx->staging.filter_flags &= ~filter_nand;
3165                 ctx->staging.filter_flags |= filter_or;
3166
3167                 /*
3168                  * Not committing directly because hardware can perform a scan,
3169                  * but we'll eventually commit the filter flags change anyway.
3170                  */
3171         }
3172
3173         mutex_unlock(&priv->mutex);
3174
3175         /*
3176          * Receiving all multicast frames is always enabled by the
3177          * default flags setup in iwl_connection_init_rx_config()
3178          * since we currently do not support programming multicast
3179          * filters into the device.
3180          */
3181         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3182                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3183 }
3184
3185 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3186 {
3187         struct iwl_priv *priv = hw->priv;
3188
3189         mutex_lock(&priv->mutex);
3190         IWL_DEBUG_MAC80211(priv, "enter\n");
3191
3192         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3193                 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3194                 goto done;
3195         }
3196         if (iwl_is_rfkill(priv)) {
3197                 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3198                 goto done;
3199         }
3200
3201         /*
3202          * mac80211 will not push any more frames for transmit
3203          * until the flush is completed
3204          */
3205         if (drop) {
3206                 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3207                 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3208                         IWL_ERR(priv, "flush request fail\n");
3209                         goto done;
3210                 }
3211         }
3212         IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3213         iwlagn_wait_tx_queue_empty(priv);
3214 done:
3215         mutex_unlock(&priv->mutex);
3216         IWL_DEBUG_MAC80211(priv, "leave\n");
3217 }
3218
3219 void iwlagn_disable_roc(struct iwl_priv *priv)
3220 {
3221         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3222
3223         lockdep_assert_held(&priv->mutex);
3224
3225         if (!priv->hw_roc_setup)
3226                 return;
3227
3228         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3229         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3230
3231         priv->hw_roc_channel = NULL;
3232
3233         memset(ctx->staging.node_addr, 0, ETH_ALEN);
3234
3235         iwlagn_commit_rxon(priv, ctx);
3236
3237         ctx->is_active = false;
3238         priv->hw_roc_setup = false;
3239 }
3240
3241 static void iwlagn_disable_roc_work(struct work_struct *work)
3242 {
3243         struct iwl_priv *priv = container_of(work, struct iwl_priv,
3244                                              hw_roc_disable_work.work);
3245
3246         mutex_lock(&priv->mutex);
3247         iwlagn_disable_roc(priv);
3248         mutex_unlock(&priv->mutex);
3249 }
3250
3251 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3252                                      struct ieee80211_channel *channel,
3253                                      enum nl80211_channel_type channel_type,
3254                                      int duration)
3255 {
3256         struct iwl_priv *priv = hw->priv;
3257         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3258         int err = 0;
3259
3260         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3261                 return -EOPNOTSUPP;
3262
3263         if (!(ctx->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)))
3264                 return -EOPNOTSUPP;
3265
3266         mutex_lock(&priv->mutex);
3267
3268         /*
3269          * TODO: Remove this hack! Firmware needs to be updated
3270          * to allow longer off-channel periods in scanning for
3271          * this use case, based on a flag (and we'll need an API
3272          * flag in the firmware when it has that).
3273          */
3274         if (iwl_is_associated(priv, IWL_RXON_CTX_BSS) && duration > 80)
3275                 duration = 80;
3276
3277         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3278                 err = -EBUSY;
3279                 goto out;
3280         }
3281
3282         priv->hw_roc_channel = channel;
3283         priv->hw_roc_chantype = channel_type;
3284         priv->hw_roc_duration = duration;
3285         cancel_delayed_work(&priv->hw_roc_disable_work);
3286
3287         if (!ctx->is_active) {
3288                 ctx->is_active = true;
3289                 ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
3290                 memcpy(ctx->staging.node_addr,
3291                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3292                        ETH_ALEN);
3293                 memcpy(ctx->staging.bssid_addr,
3294                        priv->contexts[IWL_RXON_CTX_BSS].staging.node_addr,
3295                        ETH_ALEN);
3296                 err = iwlagn_commit_rxon(priv, ctx);
3297                 if (err)
3298                         goto out;
3299                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK |
3300                                              RXON_FILTER_PROMISC_MSK |
3301                                              RXON_FILTER_CTL2HOST_MSK;
3302
3303                 err = iwlagn_commit_rxon(priv, ctx);
3304                 if (err) {
3305                         iwlagn_disable_roc(priv);
3306                         goto out;
3307                 }
3308                 priv->hw_roc_setup = true;
3309         }
3310
3311         err = iwl_scan_initiate(priv, ctx->vif, IWL_SCAN_ROC, channel->band);
3312         if (err)
3313                 iwlagn_disable_roc(priv);
3314
3315  out:
3316         mutex_unlock(&priv->mutex);
3317
3318         return err;
3319 }
3320
3321 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3322 {
3323         struct iwl_priv *priv = hw->priv;
3324
3325         if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3326                 return -EOPNOTSUPP;
3327
3328         mutex_lock(&priv->mutex);
3329         iwl_scan_cancel_timeout(priv, priv->hw_roc_duration);
3330         iwlagn_disable_roc(priv);
3331         mutex_unlock(&priv->mutex);
3332
3333         return 0;
3334 }
3335
3336 /*****************************************************************************
3337  *
3338  * driver setup and teardown
3339  *
3340  *****************************************************************************/
3341
3342 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3343 {
3344         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3345
3346         init_waitqueue_head(&priv->wait_command_queue);
3347
3348         INIT_WORK(&priv->restart, iwl_bg_restart);
3349         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3350         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3351         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3352         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3353         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3354         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
3355                           iwlagn_disable_roc_work);
3356
3357         iwl_setup_scan_deferred_work(priv);
3358
3359         if (priv->cfg->lib->bt_setup_deferred_work)
3360                 priv->cfg->lib->bt_setup_deferred_work(priv);
3361
3362         init_timer(&priv->statistics_periodic);
3363         priv->statistics_periodic.data = (unsigned long)priv;
3364         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3365
3366         init_timer(&priv->ucode_trace);
3367         priv->ucode_trace.data = (unsigned long)priv;
3368         priv->ucode_trace.function = iwl_bg_ucode_trace;
3369
3370         init_timer(&priv->watchdog);
3371         priv->watchdog.data = (unsigned long)priv;
3372         priv->watchdog.function = iwl_bg_watchdog;
3373 }
3374
3375 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3376 {
3377         if (priv->cfg->lib->cancel_deferred_work)
3378                 priv->cfg->lib->cancel_deferred_work(priv);
3379
3380         cancel_work_sync(&priv->run_time_calib_work);
3381         cancel_work_sync(&priv->beacon_update);
3382
3383         iwl_cancel_scan_deferred_work(priv);
3384
3385         cancel_work_sync(&priv->bt_full_concurrency);
3386         cancel_work_sync(&priv->bt_runtime_config);
3387         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
3388
3389         del_timer_sync(&priv->statistics_periodic);
3390         del_timer_sync(&priv->ucode_trace);
3391 }
3392
3393 static void iwl_init_hw_rates(struct iwl_priv *priv,
3394                               struct ieee80211_rate *rates)
3395 {
3396         int i;
3397
3398         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3399                 rates[i].bitrate = iwl_rates[i].ieee * 5;
3400                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3401                 rates[i].hw_value_short = i;
3402                 rates[i].flags = 0;
3403                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3404                         /*
3405                          * If CCK != 1M then set short preamble rate flag.
3406                          */
3407                         rates[i].flags |=
3408                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3409                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
3410                 }
3411         }
3412 }
3413
3414 static int iwl_init_drv(struct iwl_priv *priv)
3415 {
3416         int ret;
3417
3418         spin_lock_init(&priv->sta_lock);
3419         spin_lock_init(&priv->hcmd_lock);
3420
3421         mutex_init(&priv->mutex);
3422
3423         priv->ieee_channels = NULL;
3424         priv->ieee_rates = NULL;
3425         priv->band = IEEE80211_BAND_2GHZ;
3426
3427         priv->iw_mode = NL80211_IFTYPE_STATION;
3428         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3429         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3430         priv->agg_tids_count = 0;
3431
3432         /* initialize force reset */
3433         priv->force_reset[IWL_RF_RESET].reset_duration =
3434                 IWL_DELAY_NEXT_FORCE_RF_RESET;
3435         priv->force_reset[IWL_FW_RESET].reset_duration =
3436                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3437
3438         priv->rx_statistics_jiffies = jiffies;
3439
3440         /* Choose which receivers/antennas to use */
3441         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3442
3443         iwl_init_scan_params(priv);
3444
3445         /* init bt coex */
3446         if (priv->cfg->bt_params &&
3447             priv->cfg->bt_params->advanced_bt_coexist) {
3448                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3449                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3450                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3451                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3452                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3453                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3454         }
3455
3456         ret = iwl_init_channel_map(priv);
3457         if (ret) {
3458                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3459                 goto err;
3460         }
3461
3462         ret = iwl_init_geos(priv);
3463         if (ret) {
3464                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3465                 goto err_free_channel_map;
3466         }
3467         iwl_init_hw_rates(priv, priv->ieee_rates);
3468
3469         return 0;
3470
3471 err_free_channel_map:
3472         iwl_free_channel_map(priv);
3473 err:
3474         return ret;
3475 }
3476
3477 static void iwl_uninit_drv(struct iwl_priv *priv)
3478 {
3479         iwl_calib_free_results(priv);
3480         iwl_free_geos(priv);
3481         iwl_free_channel_map(priv);
3482         kfree(priv->scan_cmd);
3483         kfree(priv->beacon_cmd);
3484 #ifdef CONFIG_IWLWIFI_DEBUGFS
3485         kfree(priv->wowlan_sram);
3486 #endif
3487 }
3488
3489 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3490                            enum ieee80211_rssi_event rssi_event)
3491 {
3492         struct iwl_priv *priv = hw->priv;
3493
3494         mutex_lock(&priv->mutex);
3495
3496         if (priv->cfg->bt_params &&
3497                         priv->cfg->bt_params->advanced_bt_coexist) {
3498                 if (rssi_event == RSSI_EVENT_LOW)
3499                         priv->bt_enable_pspoll = true;
3500                 else if (rssi_event == RSSI_EVENT_HIGH)
3501                         priv->bt_enable_pspoll = false;
3502
3503                 iwlagn_send_advance_bt_config(priv);
3504         } else {
3505                 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3506                                 "ignoring RSSI callback\n");
3507         }
3508
3509         mutex_unlock(&priv->mutex);
3510 }
3511
3512 struct ieee80211_ops iwlagn_hw_ops = {
3513         .tx = iwlagn_mac_tx,
3514         .start = iwlagn_mac_start,
3515         .stop = iwlagn_mac_stop,
3516 #ifdef CONFIG_PM
3517         .suspend = iwlagn_mac_suspend,
3518         .resume = iwlagn_mac_resume,
3519 #endif
3520         .add_interface = iwl_mac_add_interface,
3521         .remove_interface = iwl_mac_remove_interface,
3522         .change_interface = iwl_mac_change_interface,
3523         .config = iwlagn_mac_config,
3524         .configure_filter = iwlagn_configure_filter,
3525         .set_key = iwlagn_mac_set_key,
3526         .update_tkip_key = iwlagn_mac_update_tkip_key,
3527         .set_rekey_data = iwlagn_mac_set_rekey_data,
3528         .conf_tx = iwl_mac_conf_tx,
3529         .bss_info_changed = iwlagn_bss_info_changed,
3530         .ampdu_action = iwlagn_mac_ampdu_action,
3531         .hw_scan = iwl_mac_hw_scan,
3532         .sta_notify = iwlagn_mac_sta_notify,
3533         .sta_add = iwlagn_mac_sta_add,
3534         .sta_remove = iwl_mac_sta_remove,
3535         .channel_switch = iwlagn_mac_channel_switch,
3536         .flush = iwlagn_mac_flush,
3537         .tx_last_beacon = iwl_mac_tx_last_beacon,
3538         .remain_on_channel = iwl_mac_remain_on_channel,
3539         .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3540         .rssi_callback = iwl_mac_rssi_callback,
3541         CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3542         CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3543 };
3544
3545 static u32 iwl_hw_detect(struct iwl_priv *priv)
3546 {
3547         return iwl_read32(priv, CSR_HW_REV);
3548 }
3549
3550 static int iwl_set_hw_params(struct iwl_priv *priv)
3551 {
3552         priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3553         priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3554         if (iwlagn_mod_params.amsdu_size_8K)
3555                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3556         else
3557                 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3558
3559         priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3560
3561         if (iwlagn_mod_params.disable_11n)
3562                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3563
3564         /* Device-specific setup */
3565         return priv->cfg->lib->set_hw_params(priv);
3566 }
3567
3568 /* This function both allocates and initializes hw and priv. */
3569 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3570 {
3571         struct iwl_priv *priv;
3572         /* mac80211 allocates memory for this device instance, including
3573          *   space for this driver's private structure */
3574         struct ieee80211_hw *hw;
3575
3576         hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3577         if (hw == NULL) {
3578                 pr_err("%s: Can not allocate network device\n",
3579                        cfg->name);
3580                 goto out;
3581         }
3582
3583         priv = hw->priv;
3584         priv->hw = hw;
3585
3586 out:
3587         return hw;
3588 }
3589
3590 int iwl_probe(struct iwl_bus *bus, struct iwl_cfg *cfg)
3591 {
3592         int err = 0;
3593         struct iwl_priv *priv;
3594         struct ieee80211_hw *hw;
3595         u16 num_mac;
3596         u32 hw_rev;
3597
3598         /************************
3599          * 1. Allocating HW data
3600          ************************/
3601         hw = iwl_alloc_all(cfg);
3602         if (!hw) {
3603                 err = -ENOMEM;
3604                 goto out;
3605         }
3606
3607         priv = hw->priv;
3608         priv->bus = bus;
3609         bus_set_drv_data(priv->bus, priv);
3610
3611         /* At this point both hw and priv are allocated. */
3612
3613         SET_IEEE80211_DEV(hw, priv->bus->dev);
3614
3615         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3616         priv->cfg = cfg;
3617         priv->inta_mask = CSR_INI_SET_MASK;
3618
3619         /* is antenna coupling more than 35dB ? */
3620         priv->bt_ant_couple_ok =
3621                 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3622                 true : false;
3623
3624         /* enable/disable bt channel inhibition */
3625         priv->bt_ch_announce = iwlagn_bt_ch_announce;
3626         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3627                        (priv->bt_ch_announce) ? "On" : "Off");
3628
3629         if (iwl_alloc_traffic_mem(priv))
3630                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3631
3632         /* these spin locks will be used in apm_ops.init and EEPROM access
3633          * we should init now
3634          */
3635         spin_lock_init(&priv->reg_lock);
3636         spin_lock_init(&priv->lock);
3637
3638         /*
3639          * stop and reset the on-board processor just in case it is in a
3640          * strange state ... like being left stranded by a primary kernel
3641          * and this is now the kdump kernel trying to start up
3642          */
3643         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3644
3645         /***********************
3646          * 3. Read REV register
3647          ***********************/
3648         hw_rev = iwl_hw_detect(priv);
3649         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3650                 priv->cfg->name, hw_rev);
3651
3652         err = iwl_trans_register(&priv->trans, priv);
3653         if (err)
3654                 goto out_free_traffic_mem;
3655
3656         if (trans_prepare_card_hw(&priv->trans)) {
3657                 err = -EIO;
3658                 IWL_WARN(priv, "Failed, HW not ready\n");
3659                 goto out_free_trans;
3660         }
3661
3662         /*****************
3663          * 4. Read EEPROM
3664          *****************/
3665         /* Read the EEPROM */
3666         err = iwl_eeprom_init(priv, hw_rev);
3667         if (err) {
3668                 IWL_ERR(priv, "Unable to init EEPROM\n");
3669                 goto out_free_trans;
3670         }
3671         err = iwl_eeprom_check_version(priv);
3672         if (err)
3673                 goto out_free_eeprom;
3674
3675         err = iwl_eeprom_check_sku(priv);
3676         if (err)
3677                 goto out_free_eeprom;
3678
3679         /* extract MAC Address */
3680         iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3681         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3682         priv->hw->wiphy->addresses = priv->addresses;
3683         priv->hw->wiphy->n_addresses = 1;
3684         num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3685         if (num_mac > 1) {
3686                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3687                        ETH_ALEN);
3688                 priv->addresses[1].addr[5]++;
3689                 priv->hw->wiphy->n_addresses++;
3690         }
3691
3692         /************************
3693          * 5. Setup HW constants
3694          ************************/
3695         if (iwl_set_hw_params(priv)) {
3696                 err = -ENOENT;
3697                 IWL_ERR(priv, "failed to set hw parameters\n");
3698                 goto out_free_eeprom;
3699         }
3700
3701         /*******************
3702          * 6. Setup priv
3703          *******************/
3704
3705         err = iwl_init_drv(priv);
3706         if (err)
3707                 goto out_free_eeprom;
3708         /* At this point both hw and priv are initialized. */
3709
3710         /********************
3711          * 7. Setup services
3712          ********************/
3713         iwl_setup_deferred_work(priv);
3714         iwl_setup_rx_handlers(priv);
3715         iwl_testmode_init(priv);
3716
3717         /*********************************************
3718          * 8. Enable interrupts
3719          *********************************************/
3720
3721         iwl_enable_rfkill_int(priv);
3722
3723         /* If platform's RF_KILL switch is NOT set to KILL */
3724         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3725                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3726         else
3727                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3728
3729         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3730                 test_bit(STATUS_RF_KILL_HW, &priv->status));
3731
3732         iwl_power_initialize(priv);
3733         iwl_tt_initialize(priv);
3734
3735         init_completion(&priv->firmware_loading_complete);
3736
3737         err = iwl_request_firmware(priv, true);
3738         if (err)
3739                 goto out_destroy_workqueue;
3740
3741         return 0;
3742
3743 out_destroy_workqueue:
3744         destroy_workqueue(priv->workqueue);
3745         priv->workqueue = NULL;
3746         iwl_uninit_drv(priv);
3747 out_free_eeprom:
3748         iwl_eeprom_free(priv);
3749 out_free_trans:
3750         trans_free(&priv->trans);
3751 out_free_traffic_mem:
3752         iwl_free_traffic_mem(priv);
3753         ieee80211_free_hw(priv->hw);
3754 out:
3755         return err;
3756 }
3757
3758 void __devexit iwl_remove(struct iwl_priv * priv)
3759 {
3760         unsigned long flags;
3761
3762         wait_for_completion(&priv->firmware_loading_complete);
3763
3764         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3765
3766         iwl_dbgfs_unregister(priv);
3767         sysfs_remove_group(&priv->bus->dev->kobj,
3768                            &iwl_attribute_group);
3769
3770         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3771          * to be called and iwl_down since we are removing the device
3772          * we need to set STATUS_EXIT_PENDING bit.
3773          */
3774         set_bit(STATUS_EXIT_PENDING, &priv->status);
3775
3776         iwl_testmode_cleanup(priv);
3777         iwl_leds_exit(priv);
3778
3779         if (priv->mac80211_registered) {
3780                 ieee80211_unregister_hw(priv->hw);
3781                 priv->mac80211_registered = 0;
3782         }
3783
3784         /* Reset to low power before unloading driver. */
3785         iwl_apm_stop(priv);
3786
3787         iwl_tt_exit(priv);
3788
3789         /* make sure we flush any pending irq or
3790          * tasklet for the driver
3791          */
3792         spin_lock_irqsave(&priv->lock, flags);
3793         iwl_disable_interrupts(priv);
3794         spin_unlock_irqrestore(&priv->lock, flags);
3795
3796         trans_sync_irq(&priv->trans);
3797
3798         iwl_dealloc_ucode(priv);
3799
3800         trans_rx_free(&priv->trans);
3801         trans_tx_free(&priv->trans);
3802
3803         iwl_eeprom_free(priv);
3804
3805         /*netif_stop_queue(dev); */
3806         flush_workqueue(priv->workqueue);
3807
3808         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3809          * priv->workqueue... so we can't take down the workqueue
3810          * until now... */
3811         destroy_workqueue(priv->workqueue);
3812         priv->workqueue = NULL;
3813         iwl_free_traffic_mem(priv);
3814
3815         trans_free(&priv->trans);
3816
3817         bus_set_drv_data(priv->bus, NULL);
3818
3819         iwl_uninit_drv(priv);
3820
3821         dev_kfree_skb(priv->beacon_skb);
3822
3823         ieee80211_free_hw(priv->hw);
3824 }
3825
3826
3827 /*****************************************************************************
3828  *
3829  * driver and module entry point
3830  *
3831  *****************************************************************************/
3832 static int __init iwl_init(void)
3833 {
3834
3835         int ret;
3836         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3837         pr_info(DRV_COPYRIGHT "\n");
3838
3839         ret = iwlagn_rate_control_register();
3840         if (ret) {
3841                 pr_err("Unable to register rate control algorithm: %d\n", ret);
3842                 return ret;
3843         }
3844
3845         ret = iwl_pci_register_driver();
3846
3847         if (ret)
3848                 goto error_register;
3849         return ret;
3850
3851 error_register:
3852         iwlagn_rate_control_unregister();
3853         return ret;
3854 }
3855
3856 static void __exit iwl_exit(void)
3857 {
3858         iwl_pci_unregister_driver();
3859         iwlagn_rate_control_unregister();
3860 }
3861
3862 module_exit(iwl_exit);
3863 module_init(iwl_init);
3864
3865 #ifdef CONFIG_IWLWIFI_DEBUG
3866 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3867 MODULE_PARM_DESC(debug, "debug output mask");
3868 #endif
3869
3870 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3871 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3872 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3873 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3874 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3875 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3876 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3877                    int, S_IRUGO);
3878 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3879 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3880 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3881
3882 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3883                    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_ant_coupling, int, S_IRUGO);
3888 MODULE_PARM_DESC(antenna_coupling,
3889                  "specify antenna coupling in dB (defualt: 0 dB)");
3890
3891 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3892 MODULE_PARM_DESC(bt_ch_inhibition,
3893                  "Disable BT channel inhibition (default: enable)");
3894
3895 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3896 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3897
3898 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3899 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3900
3901 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3902 MODULE_PARM_DESC(wd_disable,
3903                 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3904
3905 /*
3906  * set bt_coex_active to true, uCode will do kill/defer
3907  * every time the priority line is asserted (BT is sending signals on the
3908  * priority line in the PCIx).
3909  * set bt_coex_active to false, uCode will ignore the BT activity and
3910  * perform the normal operation
3911  *
3912  * User might experience transmit issue on some platform due to WiFi/BT
3913  * co-exist problem. The possible behaviors are:
3914  *   Able to scan and finding all the available AP
3915  *   Not able to associate with any AP
3916  * On those platforms, WiFi communication can be restored by set
3917  * "bt_coex_active" module parameter to "false"
3918  *
3919  * default: bt_coex_active = true (BT_COEX_ENABLE)
3920  */
3921 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3922                 bool, S_IRUGO);
3923 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3924
3925 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3926 MODULE_PARM_DESC(led_mode, "0=system default, "
3927                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3928
3929 module_param_named(power_save, iwlagn_mod_params.power_save,
3930                 bool, S_IRUGO);
3931 MODULE_PARM_DESC(power_save,
3932                  "enable WiFi power management (default: disable)");
3933
3934 module_param_named(power_level, iwlagn_mod_params.power_level,
3935                 int, S_IRUGO);
3936 MODULE_PARM_DESC(power_level,
3937                  "default power save level (range from 1 - 5, default: 1)");
3938
3939 /*
3940  * For now, keep using power level 1 instead of automatically
3941  * adjusting ...
3942  */
3943 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3944                 bool, S_IRUGO);
3945 MODULE_PARM_DESC(no_sleep_autoadjust,
3946                  "don't automatically adjust sleep level "
3947                  "according to maximum network latency (default: true)");