kernel/drivers/net/wireless/iwlwifi/dvm/main.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2014 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
  30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  31
  32 #include <linux/kernel.h>
  33 #include <linux/module.h>
  34 #include <linux/init.h>
  35 #include <linux/slab.h>
  36 #include <linux/delay.h>
  37 #include <linux/sched.h>
  38 #include <linux/skbuff.h>
  39 #include <linux/netdevice.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom-read.h"
  48 #include "iwl-eeprom-parse.h"
  49 #include "iwl-io.h"
  50 #include "iwl-trans.h"
  51 #include "iwl-op-mode.h"
  52 #include "iwl-drv.h"
  53 #include "iwl-modparams.h"
  54 #include "iwl-prph.h"
  55
  56 #include "dev.h"
  57 #include "calib.h"
  58 #include "agn.h"
  59
  60
  61 /******************************************************************************
  62  *
  63  * module boiler plate
  64  *
  65  ******************************************************************************/
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  69 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  70 MODULE_LICENSE("GPL");
  71
  72 static const struct iwl_op_mode_ops iwl_dvm_ops;
  73
  74 void iwl_update_chain_flags(struct iwl_priv *priv)
  75 {
  76         struct iwl_rxon_context *ctx;
  77
  78         for_each_context(priv, ctx) {
  79                 iwlagn_set_rxon_chain(priv, ctx);
  80                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  81                         iwlagn_commit_rxon(priv, ctx);
  82         }
  83 }
  84
  85 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  86 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  87                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  88                                u8 *beacon, u32 frame_size)
  89 {
  90         u16 tim_idx;
  91         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
  92
  93         /*
  94          * The index is relative to frame start but we start looking at the
  95          * variable-length part of the beacon.
  96          */
  97         tim_idx = mgmt->u.beacon.variable - beacon;
  98
  99         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 100         while ((tim_idx < (frame_size - 2)) &&
 101                         (beacon[tim_idx] != WLAN_EID_TIM))
 102                 tim_idx += beacon[tim_idx+1] + 2;
 103
 104         /* If TIM field was found, set variables */
 105         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 106                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 107                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 108         } else
 109                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 110 }
 111
 112 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 113 {
 114         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 115         struct iwl_host_cmd cmd = {
 116                 .id = REPLY_TX_BEACON,
 117         };
 118         struct ieee80211_tx_info *info;
 119         u32 frame_size;
 120         u32 rate_flags;
 121         u32 rate;
 122
 123         /*
 124          * We have to set up the TX command, the TX Beacon command, and the
 125          * beacon contents.
 126          */
 127
 128         lockdep_assert_held(&priv->mutex);
 129
 130         if (!priv->beacon_ctx) {
 131                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 132                 return 0;
 133         }
 134
 135         if (WARN_ON(!priv->beacon_skb))
 136                 return -EINVAL;
 137
 138         /* Allocate beacon command */
 139         if (!priv->beacon_cmd)
 140                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 141         tx_beacon_cmd = priv->beacon_cmd;
 142         if (!tx_beacon_cmd)
 143                 return -ENOMEM;
 144
 145         frame_size = priv->beacon_skb->len;
 146
 147         /* Set up TX command fields */
 148         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 149         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 150         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 151         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 152                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 153
 154         /* Set up TX beacon command fields */
 155         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 156                            frame_size);
 157
 158         /* Set up packet rate and flags */
 159         info = IEEE80211_SKB_CB(priv->beacon_skb);
 160
 161         /*
 162          * Let's set up the rate at least somewhat correctly;
 163          * it will currently not actually be used by the uCode,
 164          * it uses the broadcast station's rate instead.
 165          */
 166         if (info->control.rates[0].idx < 0 ||
 167             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 168                 rate = 0;
 169         else
 170                 rate = info->control.rates[0].idx;
 171
 172         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 173                                               priv->nvm_data->valid_tx_ant);
 174         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 175
 176         /* In mac80211, rates for 5 GHz start at 0 */
 177         if (info->band == IEEE80211_BAND_5GHZ)
 178                 rate += IWL_FIRST_OFDM_RATE;
 179         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 180                 rate_flags |= RATE_MCS_CCK_MSK;
 181
 182         tx_beacon_cmd->tx.rate_n_flags =
 183                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 184
 185         /* Submit command */
 186         cmd.len[0] = sizeof(*tx_beacon_cmd);
 187         cmd.data[0] = tx_beacon_cmd;
 188         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 189         cmd.len[1] = frame_size;
 190         cmd.data[1] = priv->beacon_skb->data;
 191         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 192
 193         return iwl_dvm_send_cmd(priv, &cmd);
 194 }
 195
 196 static void iwl_bg_beacon_update(struct work_struct *work)
 197 {
 198         struct iwl_priv *priv =
 199                 container_of(work, struct iwl_priv, beacon_update);
 200         struct sk_buff *beacon;
 201
 202         mutex_lock(&priv->mutex);
 203         if (!priv->beacon_ctx) {
 204                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 205                 goto out;
 206         }
 207
 208         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 209                 /*
 210                  * The ucode will send beacon notifications even in
 211                  * IBSS mode, but we don't want to process them. But
 212                  * we need to defer the type check to here due to
 213                  * requiring locking around the beacon_ctx access.
 214                  */
 215                 goto out;
 216         }
 217
 218         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 219         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 220         if (!beacon) {
 221                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 222                 goto out;
 223         }
 224
 225         /* new beacon skb is allocated every time; dispose previous.*/
 226         dev_kfree_skb(priv->beacon_skb);
 227
 228         priv->beacon_skb = beacon;
 229
 230         iwlagn_send_beacon_cmd(priv);
 231  out:
 232         mutex_unlock(&priv->mutex);
 233 }
 234
 235 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 236 {
 237         struct iwl_priv *priv =
 238                 container_of(work, struct iwl_priv, bt_runtime_config);
 239
 240         mutex_lock(&priv->mutex);
 241         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 242                 goto out;
 243
 244         /* dont send host command if rf-kill is on */
 245         if (!iwl_is_ready_rf(priv))
 246                 goto out;
 247
 248         iwlagn_send_advance_bt_config(priv);
 249 out:
 250         mutex_unlock(&priv->mutex);
 251 }
 252
 253 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 254 {
 255         struct iwl_priv *priv =
 256                 container_of(work, struct iwl_priv, bt_full_concurrency);
 257         struct iwl_rxon_context *ctx;
 258
 259         mutex_lock(&priv->mutex);
 260
 261         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 262                 goto out;
 263
 264         /* dont send host command if rf-kill is on */
 265         if (!iwl_is_ready_rf(priv))
 266                 goto out;
 267
 268         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 269                        priv->bt_full_concurrent ?
 270                        "full concurrency" : "3-wire");
 271
 272         /*
 273          * LQ & RXON updated cmds must be sent before BT Config cmd
 274          * to avoid 3-wire collisions
 275          */
 276         for_each_context(priv, ctx) {
 277                 iwlagn_set_rxon_chain(priv, ctx);
 278                 iwlagn_commit_rxon(priv, ctx);
 279         }
 280
 281         iwlagn_send_advance_bt_config(priv);
 282 out:
 283         mutex_unlock(&priv->mutex);
 284 }
 285
 286 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 287 {
 288         struct iwl_statistics_cmd statistics_cmd = {
 289                 .configuration_flags =
 290                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 291         };
 292
 293         if (flags & CMD_ASYNC)
 294                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 295                                         CMD_ASYNC,
 296                                         sizeof(struct iwl_statistics_cmd),
 297                                         &statistics_cmd);
 298         else
 299                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD, 0,
 300                                         sizeof(struct iwl_statistics_cmd),
 301                                         &statistics_cmd);
 302 }
 303
 304 /**
 305  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 306  *
 307  * This callback is provided in order to send a statistics request.
 308  *
 309  * This timer function is continually reset to execute within
 310  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 311  * was received.  We need to ensure we receive the statistics in order
 312  * to update the temperature used for calibrating the TXPOWER.
 313  */
 314 static void iwl_bg_statistics_periodic(unsigned long data)
 315 {
 316         struct iwl_priv *priv = (struct iwl_priv *)data;
 317
 318         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 319                 return;
 320
 321         /* dont send host command if rf-kill is on */
 322         if (!iwl_is_ready_rf(priv))
 323                 return;
 324
 325         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 326 }
 327
 328
 329 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 330                                         u32 start_idx, u32 num_events,
 331                                         u32 capacity, u32 mode)
 332 {
 333         u32 i;
 334         u32 ptr;        /* SRAM byte address of log data */
 335         u32 ev, time, data; /* event log data */
 336         unsigned long reg_flags;
 337
 338         if (mode == 0)
 339                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 340         else
 341                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 342
 343         /* Make sure device is powered up for SRAM reads */
 344         if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
 345                 return;
 346
 347         /* Set starting address; reads will auto-increment */
 348         iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 349
 350         /*
 351          * Refuse to read more than would have fit into the log from
 352          * the current start_idx. This used to happen due to the race
 353          * described below, but now WARN because the code below should
 354          * prevent it from happening here.
 355          */
 356         if (WARN_ON(num_events > capacity - start_idx))
 357                 num_events = capacity - start_idx;
 358
 359         /*
 360          * "time" is actually "data" for mode 0 (no timestamp).
 361          * place event id # at far right for easier visual parsing.
 362          */
 363         for (i = 0; i < num_events; i++) {
 364                 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 365                 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 366                 if (mode == 0) {
 367                         trace_iwlwifi_dev_ucode_cont_event(
 368                                         priv->trans->dev, 0, time, ev);
 369                 } else {
 370                         data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 371                         trace_iwlwifi_dev_ucode_cont_event(
 372                                         priv->trans->dev, time, data, ev);
 373                 }
 374         }
 375         /* Allow device to power down */
 376         iwl_trans_release_nic_access(priv->trans, &reg_flags);
 377 }
 378
 379 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 380 {
 381         u32 capacity;   /* event log capacity in # entries */
 382         struct {
 383                 u32 capacity;
 384                 u32 mode;
 385                 u32 wrap_counter;
 386                 u32 write_counter;
 387         } __packed read;
 388         u32 base;       /* SRAM byte address of event log header */
 389         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 390         u32 num_wraps;  /* # times uCode wrapped to top of log */
 391         u32 next_entry; /* index of next entry to be written by uCode */
 392
 393         base = priv->device_pointers.log_event_table;
 394         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 395                 iwl_trans_read_mem_bytes(priv->trans, base,
 396                                          &read, sizeof(read));
 397                 capacity = read.capacity;
 398                 mode = read.mode;
 399                 num_wraps = read.wrap_counter;
 400                 next_entry = read.write_counter;
 401         } else
 402                 return;
 403
 404         /*
 405          * Unfortunately, the uCode doesn't use temporary variables.
 406          * Therefore, it can happen that we read next_entry == capacity,
 407          * which really means next_entry == 0.
 408          */
 409         if (unlikely(next_entry == capacity))
 410                 next_entry = 0;
 411         /*
 412          * Additionally, the uCode increases the write pointer before
 413          * the wraps counter, so if the write pointer is smaller than
 414          * the old write pointer (wrap occurred) but we read that no
 415          * wrap occurred, we actually read between the next_entry and
 416          * num_wraps update (this does happen in practice!!) -- take
 417          * that into account by increasing num_wraps.
 418          */
 419         if (unlikely(next_entry < priv->event_log.next_entry &&
 420                      num_wraps == priv->event_log.num_wraps))
 421                 num_wraps++;
 422
 423         if (num_wraps == priv->event_log.num_wraps) {
 424                 iwl_print_cont_event_trace(
 425                         priv, base, priv->event_log.next_entry,
 426                         next_entry - priv->event_log.next_entry,
 427                         capacity, mode);
 428
 429                 priv->event_log.non_wraps_count++;
 430         } else {
 431                 if (num_wraps - priv->event_log.num_wraps > 1)
 432                         priv->event_log.wraps_more_count++;
 433                 else
 434                         priv->event_log.wraps_once_count++;
 435
 436                 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 437                                 num_wraps - priv->event_log.num_wraps,
 438                                 next_entry, priv->event_log.next_entry);
 439
 440                 if (next_entry < priv->event_log.next_entry) {
 441                         iwl_print_cont_event_trace(
 442                                 priv, base, priv->event_log.next_entry,
 443                                 capacity - priv->event_log.next_entry,
 444                                 capacity, mode);
 445
 446                         iwl_print_cont_event_trace(
 447                                 priv, base, 0, next_entry, capacity, mode);
 448                 } else {
 449                         iwl_print_cont_event_trace(
 450                                 priv, base, next_entry,
 451                                 capacity - next_entry,
 452                                 capacity, mode);
 453
 454                         iwl_print_cont_event_trace(
 455                                 priv, base, 0, next_entry, capacity, mode);
 456                 }
 457         }
 458
 459         priv->event_log.num_wraps = num_wraps;
 460         priv->event_log.next_entry = next_entry;
 461 }
 462
 463 /**
 464  * iwl_bg_ucode_trace - Timer callback to log ucode event
 465  *
 466  * The timer is continually set to execute every
 467  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 468  * this function is to perform continuous uCode event logging operation
 469  * if enabled
 470  */
 471 static void iwl_bg_ucode_trace(unsigned long data)
 472 {
 473         struct iwl_priv *priv = (struct iwl_priv *)data;
 474
 475         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 476                 return;
 477
 478         if (priv->event_log.ucode_trace) {
 479                 iwl_continuous_event_trace(priv);
 480                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 481                 mod_timer(&priv->ucode_trace,
 482                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 483         }
 484 }
 485
 486 static void iwl_bg_tx_flush(struct work_struct *work)
 487 {
 488         struct iwl_priv *priv =
 489                 container_of(work, struct iwl_priv, tx_flush);
 490
 491         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 492                 return;
 493
 494         /* do nothing if rf-kill is on */
 495         if (!iwl_is_ready_rf(priv))
 496                 return;
 497
 498         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 499         iwlagn_dev_txfifo_flush(priv);
 500 }
 501
 502 /*
 503  * queue/FIFO/AC mapping definitions
 504  */
 505
 506 static const u8 iwlagn_bss_ac_to_fifo[] = {
 507         IWL_TX_FIFO_VO,
 508         IWL_TX_FIFO_VI,
 509         IWL_TX_FIFO_BE,
 510         IWL_TX_FIFO_BK,
 511 };
 512
 513 static const u8 iwlagn_bss_ac_to_queue[] = {
 514         0, 1, 2, 3,
 515 };
 516
 517 static const u8 iwlagn_pan_ac_to_fifo[] = {
 518         IWL_TX_FIFO_VO_IPAN,
 519         IWL_TX_FIFO_VI_IPAN,
 520         IWL_TX_FIFO_BE_IPAN,
 521         IWL_TX_FIFO_BK_IPAN,
 522 };
 523
 524 static const u8 iwlagn_pan_ac_to_queue[] = {
 525         7, 6, 5, 4,
 526 };
 527
 528 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 529 {
 530         int i;
 531
 532         /*
 533          * The default context is always valid,
 534          * the PAN context depends on uCode.
 535          */
 536         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 537         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 538                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 539
 540         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 541                 priv->contexts[i].ctxid = i;
 542
 543         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 544         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 545         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 546         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 547         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 548         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 549         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 550         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 551         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 552         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 553                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 554         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 555                 BIT(NL80211_IFTYPE_STATION);
 556         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 557         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 558         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 559         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 560         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 561                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 562         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 563                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 564
 565         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 566         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 567                 REPLY_WIPAN_RXON_TIMING;
 568         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 569                 REPLY_WIPAN_RXON_ASSOC;
 570         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 571         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 572         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 573         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 574         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 575         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 576                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 577
 578         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 579         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 580         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 581         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 582                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 583         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 584                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 585         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 586
 587         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 588 }
 589
 590 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 591 {
 592         struct iwl_ct_kill_config cmd;
 593         struct iwl_ct_kill_throttling_config adv_cmd;
 594         int ret = 0;
 595
 596         iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 597                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 598
 599         priv->thermal_throttle.ct_kill_toggle = false;
 600
 601         if (priv->lib->support_ct_kill_exit) {
 602                 adv_cmd.critical_temperature_enter =
 603                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 604                 adv_cmd.critical_temperature_exit =
 605                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 606
 607                 ret = iwl_dvm_send_cmd_pdu(priv,
 608                                        REPLY_CT_KILL_CONFIG_CMD,
 609                                        0, sizeof(adv_cmd), &adv_cmd);
 610                 if (ret)
 611                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 612                 else
 613                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 614                                 "succeeded, critical temperature enter is %d,"
 615                                 "exit is %d\n",
 616                                 priv->hw_params.ct_kill_threshold,
 617                                 priv->hw_params.ct_kill_exit_threshold);
 618         } else {
 619                 cmd.critical_temperature_R =
 620                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 621
 622                 ret = iwl_dvm_send_cmd_pdu(priv,
 623                                        REPLY_CT_KILL_CONFIG_CMD,
 624                                        0, sizeof(cmd), &cmd);
 625                 if (ret)
 626                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 627                 else
 628                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 629                                 "succeeded, "
 630                                 "critical temperature is %d\n",
 631                                 priv->hw_params.ct_kill_threshold);
 632         }
 633 }
 634
 635 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 636 {
 637         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 638         struct iwl_host_cmd cmd = {
 639                 .id = CALIBRATION_CFG_CMD,
 640                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 641                 .data = { &calib_cfg_cmd, },
 642         };
 643
 644         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 645         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 646         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 647
 648         return iwl_dvm_send_cmd(priv, &cmd);
 649 }
 650
 651
 652 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 653 {
 654         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 655           .valid = cpu_to_le32(valid_tx_ant),
 656         };
 657
 658         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 659                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 660                 return iwl_dvm_send_cmd_pdu(priv, TX_ANT_CONFIGURATION_CMD, 0,
 661                                         sizeof(struct iwl_tx_ant_config_cmd),
 662                                         &tx_ant_cmd);
 663         } else {
 664                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 665                 return -EOPNOTSUPP;
 666         }
 667 }
 668
 669 static void iwl_send_bt_config(struct iwl_priv *priv)
 670 {
 671         struct iwl_bt_cmd bt_cmd = {
 672                 .lead_time = BT_LEAD_TIME_DEF,
 673                 .max_kill = BT_MAX_KILL_DEF,
 674                 .kill_ack_mask = 0,
 675                 .kill_cts_mask = 0,
 676         };
 677
 678         if (!iwlwifi_mod_params.bt_coex_active)
 679                 bt_cmd.flags = BT_COEX_DISABLE;
 680         else
 681                 bt_cmd.flags = BT_COEX_ENABLE;
 682
 683         priv->bt_enable_flag = bt_cmd.flags;
 684         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 685                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 686
 687         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 688                              0, sizeof(struct iwl_bt_cmd), &bt_cmd))
 689                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 690 }
 691
 692 /**
 693  * iwl_alive_start - called after REPLY_ALIVE notification received
 694  *                   from protocol/runtime uCode (initialization uCode's
 695  *                   Alive gets handled by iwl_init_alive_start()).
 696  */
 697 int iwl_alive_start(struct iwl_priv *priv)
 698 {
 699         int ret = 0;
 700         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 701
 702         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 703
 704         /* After the ALIVE response, we can send host commands to the uCode */
 705         set_bit(STATUS_ALIVE, &priv->status);
 706
 707         if (iwl_is_rfkill(priv))
 708                 return -ERFKILL;
 709
 710         if (priv->event_log.ucode_trace) {
 711                 /* start collecting data now */
 712                 mod_timer(&priv->ucode_trace, jiffies);
 713         }
 714
 715         /* download priority table before any calibration request */
 716         if (priv->lib->bt_params &&
 717             priv->lib->bt_params->advanced_bt_coexist) {
 718                 /* Configure Bluetooth device coexistence support */
 719                 if (priv->lib->bt_params->bt_sco_disable)
 720                         priv->bt_enable_pspoll = false;
 721                 else
 722                         priv->bt_enable_pspoll = true;
 723
 724                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 725                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 726                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 727                 iwlagn_send_advance_bt_config(priv);
 728                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 729                 priv->cur_rssi_ctx = NULL;
 730
 731                 iwl_send_prio_tbl(priv);
 732
 733                 /* FIXME: w/a to force change uCode BT state machine */
 734                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 735                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 736                 if (ret)
 737                         return ret;
 738                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 739                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 740                 if (ret)
 741                         return ret;
 742         } else if (priv->lib->bt_params) {
 743                 /*
 744                  * default is 2-wire BT coexexistence support
 745                  */
 746                 iwl_send_bt_config(priv);
 747         }
 748
 749         /*
 750          * Perform runtime calibrations, including DC calibration.
 751          */
 752         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 753
 754         ieee80211_wake_queues(priv->hw);
 755
 756         /* Configure Tx antenna selection based on H/W config */
 757         iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
 758
 759         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 760                 struct iwl_rxon_cmd *active_rxon =
 761                                 (struct iwl_rxon_cmd *)&ctx->active;
 762                 /* apply any changes in staging */
 763                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 764                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 765         } else {
 766                 struct iwl_rxon_context *tmp;
 767                 /* Initialize our rx_config data */
 768                 for_each_context(priv, tmp)
 769                         iwl_connection_init_rx_config(priv, tmp);
 770
 771                 iwlagn_set_rxon_chain(priv, ctx);
 772         }
 773
 774         if (!priv->wowlan) {
 775                 /* WoWLAN ucode will not reply in the same way, skip it */
 776                 iwl_reset_run_time_calib(priv);
 777         }
 778
 779         set_bit(STATUS_READY, &priv->status);
 780
 781         /* Configure the adapter for unassociated operation */
 782         ret = iwlagn_commit_rxon(priv, ctx);
 783         if (ret)
 784                 return ret;
 785
 786         /* At this point, the NIC is initialized and operational */
 787         iwl_rf_kill_ct_config(priv);
 788
 789         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 790
 791         return iwl_power_update_mode(priv, true);
 792 }
 793
 794 /**
 795  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 796  * @priv: iwl priv struct
 797  *
 798  * This is called during iwl_down() to make sure that in the case
 799  * we're coming there from a hardware restart mac80211 will be
 800  * able to reconfigure stations -- if we're getting there in the
 801  * normal down flow then the stations will already be cleared.
 802  */
 803 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 804 {
 805         struct iwl_rxon_context *ctx;
 806
 807         spin_lock_bh(&priv->sta_lock);
 808         memset(priv->stations, 0, sizeof(priv->stations));
 809         priv->num_stations = 0;
 810
 811         priv->ucode_key_table = 0;
 812
 813         for_each_context(priv, ctx) {
 814                 /*
 815                  * Remove all key information that is not stored as part
 816                  * of station information since mac80211 may not have had
 817                  * a chance to remove all the keys. When device is
 818                  * reconfigured by mac80211 after an error all keys will
 819                  * be reconfigured.
 820                  */
 821                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 822                 ctx->key_mapping_keys = 0;
 823         }
 824
 825         spin_unlock_bh(&priv->sta_lock);
 826 }
 827
 828 void iwl_down(struct iwl_priv *priv)
 829 {
 830         int exit_pending;
 831
 832         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 833
 834         lockdep_assert_held(&priv->mutex);
 835
 836         iwl_scan_cancel_timeout(priv, 200);
 837
 838         exit_pending =
 839                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 840
 841         iwl_clear_ucode_stations(priv, NULL);
 842         iwl_dealloc_bcast_stations(priv);
 843         iwl_clear_driver_stations(priv);
 844
 845         /* reset BT coex data */
 846         priv->bt_status = 0;
 847         priv->cur_rssi_ctx = NULL;
 848         priv->bt_is_sco = 0;
 849         if (priv->lib->bt_params)
 850                 priv->bt_traffic_load =
 851                          priv->lib->bt_params->bt_init_traffic_load;
 852         else
 853                 priv->bt_traffic_load = 0;
 854         priv->bt_full_concurrent = false;
 855         priv->bt_ci_compliance = 0;
 856
 857         /* Wipe out the EXIT_PENDING status bit if we are not actually
 858          * exiting the module */
 859         if (!exit_pending)
 860                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 861
 862         if (priv->mac80211_registered)
 863                 ieee80211_stop_queues(priv->hw);
 864
 865         priv->ucode_loaded = false;
 866         iwl_trans_stop_device(priv->trans);
 867
 868         /* Set num_aux_in_flight must be done after the transport is stopped */
 869         atomic_set(&priv->num_aux_in_flight, 0);
 870
 871         /* Clear out all status bits but a few that are stable across reset */
 872         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 873                                 STATUS_RF_KILL_HW |
 874                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 875                                 STATUS_FW_ERROR |
 876                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 877                                 STATUS_EXIT_PENDING;
 878
 879         dev_kfree_skb(priv->beacon_skb);
 880         priv->beacon_skb = NULL;
 881 }
 882
 883 /*****************************************************************************
 884  *
 885  * Workqueue callbacks
 886  *
 887  *****************************************************************************/
 888
 889 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 890 {
 891         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 892                         run_time_calib_work);
 893
 894         mutex_lock(&priv->mutex);
 895
 896         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 897             test_bit(STATUS_SCANNING, &priv->status)) {
 898                 mutex_unlock(&priv->mutex);
 899                 return;
 900         }
 901
 902         if (priv->start_calib) {
 903                 iwl_chain_noise_calibration(priv);
 904                 iwl_sensitivity_calibration(priv);
 905         }
 906
 907         mutex_unlock(&priv->mutex);
 908 }
 909
 910 void iwlagn_prepare_restart(struct iwl_priv *priv)
 911 {
 912         bool bt_full_concurrent;
 913         u8 bt_ci_compliance;
 914         u8 bt_load;
 915         u8 bt_status;
 916         bool bt_is_sco;
 917         int i;
 918
 919         lockdep_assert_held(&priv->mutex);
 920
 921         priv->is_open = 0;
 922
 923         /*
 924          * __iwl_down() will clear the BT status variables,
 925          * which is correct, but when we restart we really
 926          * want to keep them so restore them afterwards.
 927          *
 928          * The restart process will later pick them up and
 929          * re-configure the hw when we reconfigure the BT
 930          * command.
 931          */
 932         bt_full_concurrent = priv->bt_full_concurrent;
 933         bt_ci_compliance = priv->bt_ci_compliance;
 934         bt_load = priv->bt_traffic_load;
 935         bt_status = priv->bt_status;
 936         bt_is_sco = priv->bt_is_sco;
 937
 938         iwl_down(priv);
 939
 940         priv->bt_full_concurrent = bt_full_concurrent;
 941         priv->bt_ci_compliance = bt_ci_compliance;
 942         priv->bt_traffic_load = bt_load;
 943         priv->bt_status = bt_status;
 944         priv->bt_is_sco = bt_is_sco;
 945
 946         /* reset aggregation queues */
 947         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
 948                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 949         /* and stop counts */
 950         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
 951                 atomic_set(&priv->queue_stop_count[i], 0);
 952
 953         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
 954 }
 955
 956 static void iwl_bg_restart(struct work_struct *data)
 957 {
 958         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
 959
 960         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 961                 return;
 962
 963         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
 964                 mutex_lock(&priv->mutex);
 965                 iwlagn_prepare_restart(priv);
 966                 mutex_unlock(&priv->mutex);
 967                 iwl_cancel_deferred_work(priv);
 968                 if (priv->mac80211_registered)
 969                         ieee80211_restart_hw(priv->hw);
 970                 else
 971                         IWL_ERR(priv,
 972                                 "Cannot request restart before registrating with mac80211\n");
 973         } else {
 974                 WARN_ON(1);
 975         }
 976 }
 977
 978 /*****************************************************************************
 979  *
 980  * driver setup and teardown
 981  *
 982  *****************************************************************************/
 983
 984 static void iwl_setup_deferred_work(struct iwl_priv *priv)
 985 {
 986         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
 987
 988         INIT_WORK(&priv->restart, iwl_bg_restart);
 989         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
 990         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
 991         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
 992         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
 993         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
 994
 995         iwl_setup_scan_deferred_work(priv);
 996
 997         if (priv->lib->bt_params)
 998                 iwlagn_bt_setup_deferred_work(priv);
 999
1000         setup_timer(&priv->statistics_periodic, iwl_bg_statistics_periodic,
1001                     (unsigned long)priv);
1002
1003         setup_timer(&priv->ucode_trace, iwl_bg_ucode_trace,
1004                     (unsigned long)priv);
1005 }
1006
1007 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1008 {
1009         if (priv->lib->bt_params)
1010                 iwlagn_bt_cancel_deferred_work(priv);
1011
1012         cancel_work_sync(&priv->run_time_calib_work);
1013         cancel_work_sync(&priv->beacon_update);
1014
1015         iwl_cancel_scan_deferred_work(priv);
1016
1017         cancel_work_sync(&priv->bt_full_concurrency);
1018         cancel_work_sync(&priv->bt_runtime_config);
1019
1020         del_timer_sync(&priv->statistics_periodic);
1021         del_timer_sync(&priv->ucode_trace);
1022 }
1023
1024 static int iwl_init_drv(struct iwl_priv *priv)
1025 {
1026         spin_lock_init(&priv->sta_lock);
1027
1028         mutex_init(&priv->mutex);
1029
1030         INIT_LIST_HEAD(&priv->calib_results);
1031
1032         priv->band = IEEE80211_BAND_2GHZ;
1033
1034         priv->plcp_delta_threshold = priv->lib->plcp_delta_threshold;
1035
1036         priv->iw_mode = NL80211_IFTYPE_STATION;
1037         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1038         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1039         priv->agg_tids_count = 0;
1040
1041         priv->rx_statistics_jiffies = jiffies;
1042
1043         /* Choose which receivers/antennas to use */
1044         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1045
1046         iwl_init_scan_params(priv);
1047
1048         /* init bt coex */
1049         if (priv->lib->bt_params &&
1050             priv->lib->bt_params->advanced_bt_coexist) {
1051                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1052                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1053                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1054                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1055                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1056                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1057         }
1058
1059         return 0;
1060 }
1061
1062 static void iwl_uninit_drv(struct iwl_priv *priv)
1063 {
1064         kfree(priv->scan_cmd);
1065         kfree(priv->beacon_cmd);
1066         kfree(rcu_dereference_raw(priv->noa_data));
1067         iwl_calib_free_results(priv);
1068 #ifdef CONFIG_IWLWIFI_DEBUGFS
1069         kfree(priv->wowlan_sram);
1070 #endif
1071 }
1072
1073 static void iwl_set_hw_params(struct iwl_priv *priv)
1074 {
1075         if (priv->cfg->ht_params)
1076                 priv->hw_params.use_rts_for_aggregation =
1077                         priv->cfg->ht_params->use_rts_for_aggregation;
1078
1079         /* Device-specific setup */
1080         priv->lib->set_hw_params(priv);
1081 }
1082
1083
1084
1085 /* show what optional capabilities we have */
1086 static void iwl_option_config(struct iwl_priv *priv)
1087 {
1088 #ifdef CONFIG_IWLWIFI_DEBUG
1089         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1090 #else
1091         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1092 #endif
1093
1094 #ifdef CONFIG_IWLWIFI_DEBUGFS
1095         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1096 #else
1097         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1098 #endif
1099
1100 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1101         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1102 #else
1103         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1104 #endif
1105 }
1106
1107 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1108 {
1109         struct iwl_nvm_data *data = priv->nvm_data;
1110
1111         if (data->sku_cap_11n_enable &&
1112             !priv->cfg->ht_params) {
1113                 IWL_ERR(priv, "Invalid 11n configuration\n");
1114                 return -EINVAL;
1115         }
1116
1117         if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1118             !data->sku_cap_band_52GHz_enable) {
1119                 IWL_ERR(priv, "Invalid device sku\n");
1120                 return -EINVAL;
1121         }
1122
1123         IWL_DEBUG_INFO(priv,
1124                        "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n",
1125                        data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1126                        data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1127                        data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1128
1129         priv->hw_params.tx_chains_num =
1130                 num_of_ant(data->valid_tx_ant);
1131         if (priv->cfg->rx_with_siso_diversity)
1132                 priv->hw_params.rx_chains_num = 1;
1133         else
1134                 priv->hw_params.rx_chains_num =
1135                         num_of_ant(data->valid_rx_ant);
1136
1137         IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1138                        data->valid_tx_ant,
1139                        data->valid_rx_ant);
1140
1141         return 0;
1142 }
1143
1144 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1145                                                  const struct iwl_cfg *cfg,
1146                                                  const struct iwl_fw *fw,
1147                                                  struct dentry *dbgfs_dir)
1148 {
1149         struct iwl_priv *priv;
1150         struct ieee80211_hw *hw;
1151         struct iwl_op_mode *op_mode;
1152         u16 num_mac;
1153         u32 ucode_flags;
1154         struct iwl_trans_config trans_cfg = {};
1155         static const u8 no_reclaim_cmds[] = {
1156                 REPLY_RX_PHY_CMD,
1157                 REPLY_RX_MPDU_CMD,
1158                 REPLY_COMPRESSED_BA,
1159                 STATISTICS_NOTIFICATION,
1160                 REPLY_TX,
1161         };
1162         int i;
1163
1164         /************************
1165          * 1. Allocating HW data
1166          ************************/
1167         hw = iwl_alloc_all();
1168         if (!hw) {
1169                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1170                 goto out;
1171         }
1172
1173         op_mode = hw->priv;
1174         op_mode->ops = &iwl_dvm_ops;
1175         priv = IWL_OP_MODE_GET_DVM(op_mode);
1176         priv->trans = trans;
1177         priv->dev = trans->dev;
1178         priv->cfg = cfg;
1179         priv->fw = fw;
1180
1181         switch (priv->cfg->device_family) {
1182         case IWL_DEVICE_FAMILY_1000:
1183         case IWL_DEVICE_FAMILY_100:
1184                 priv->lib = &iwl_dvm_1000_cfg;
1185                 break;
1186         case IWL_DEVICE_FAMILY_2000:
1187                 priv->lib = &iwl_dvm_2000_cfg;
1188                 break;
1189         case IWL_DEVICE_FAMILY_105:
1190                 priv->lib = &iwl_dvm_105_cfg;
1191                 break;
1192         case IWL_DEVICE_FAMILY_2030:
1193         case IWL_DEVICE_FAMILY_135:
1194                 priv->lib = &iwl_dvm_2030_cfg;
1195                 break;
1196         case IWL_DEVICE_FAMILY_5000:
1197                 priv->lib = &iwl_dvm_5000_cfg;
1198                 break;
1199         case IWL_DEVICE_FAMILY_5150:
1200                 priv->lib = &iwl_dvm_5150_cfg;
1201                 break;
1202         case IWL_DEVICE_FAMILY_6000:
1203         case IWL_DEVICE_FAMILY_6000i:
1204                 priv->lib = &iwl_dvm_6000_cfg;
1205                 break;
1206         case IWL_DEVICE_FAMILY_6005:
1207                 priv->lib = &iwl_dvm_6005_cfg;
1208                 break;
1209         case IWL_DEVICE_FAMILY_6050:
1210         case IWL_DEVICE_FAMILY_6150:
1211                 priv->lib = &iwl_dvm_6050_cfg;
1212                 break;
1213         case IWL_DEVICE_FAMILY_6030:
1214                 priv->lib = &iwl_dvm_6030_cfg;
1215                 break;
1216         default:
1217                 break;
1218         }
1219
1220         if (WARN_ON(!priv->lib))
1221                 goto out_free_hw;
1222
1223         /*
1224          * Populate the state variables that the transport layer needs
1225          * to know about.
1226          */
1227         trans_cfg.op_mode = op_mode;
1228         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1229         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1230         trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1231         trans_cfg.cmd_q_wdg_timeout = IWL_WATCHDOG_DISABLED;
1232
1233         trans_cfg.command_names = iwl_dvm_cmd_strings;
1234         trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1235
1236         WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1237                 priv->cfg->base_params->num_of_queues);
1238
1239         ucode_flags = fw->ucode_capa.flags;
1240
1241         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1242                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1243                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1244         } else {
1245                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1246                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1247         }
1248
1249         /* Configure transport layer */
1250         iwl_trans_configure(priv->trans, &trans_cfg);
1251
1252         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1253         trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1254
1255         /* At this point both hw and priv are allocated. */
1256
1257         SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1258
1259         iwl_option_config(priv);
1260
1261         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1262
1263         /* is antenna coupling more than 35dB ? */
1264         priv->bt_ant_couple_ok =
1265                 (iwlwifi_mod_params.ant_coupling >
1266                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1267                         true : false;
1268
1269         /* bt channel inhibition enabled*/
1270         priv->bt_ch_announce = true;
1271         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1272                        (priv->bt_ch_announce) ? "On" : "Off");
1273
1274         /* these spin locks will be used in apm_ops.init and EEPROM access
1275          * we should init now
1276          */
1277         spin_lock_init(&priv->statistics.lock);
1278
1279         /***********************
1280          * 2. Read REV register
1281          ***********************/
1282         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1283                 priv->cfg->name, priv->trans->hw_rev);
1284
1285         if (iwl_trans_start_hw(priv->trans))
1286                 goto out_free_hw;
1287
1288         /* Read the EEPROM */
1289         if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1290                             &priv->eeprom_blob_size)) {
1291                 IWL_ERR(priv, "Unable to init EEPROM\n");
1292                 goto out_free_hw;
1293         }
1294
1295         /* Reset chip to save power until we load uCode during "up". */
1296         iwl_trans_stop_device(priv->trans);
1297
1298         priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1299                                                   priv->eeprom_blob,
1300                                                   priv->eeprom_blob_size);
1301         if (!priv->nvm_data)
1302                 goto out_free_eeprom_blob;
1303
1304         if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1305                 goto out_free_eeprom;
1306
1307         if (iwl_eeprom_init_hw_params(priv))
1308                 goto out_free_eeprom;
1309
1310         /* extract MAC Address */
1311         memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1312         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1313         priv->hw->wiphy->addresses = priv->addresses;
1314         priv->hw->wiphy->n_addresses = 1;
1315         num_mac = priv->nvm_data->n_hw_addrs;
1316         if (num_mac > 1) {
1317                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1318                        ETH_ALEN);
1319                 priv->addresses[1].addr[5]++;
1320                 priv->hw->wiphy->n_addresses++;
1321         }
1322
1323         /************************
1324          * 4. Setup HW constants
1325          ************************/
1326         iwl_set_hw_params(priv);
1327
1328         if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1329                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN\n");
1330                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1331                 /*
1332                  * if not PAN, then don't support P2P -- might be a uCode
1333                  * packaging bug or due to the eeprom check above
1334                  */
1335                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1336                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1337
1338                 /* Configure transport layer again*/
1339                 iwl_trans_configure(priv->trans, &trans_cfg);
1340         }
1341
1342         /*******************
1343          * 5. Setup priv
1344          *******************/
1345         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1346                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1347                 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1348                     i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1349                     i != IWL_IPAN_CMD_QUEUE_NUM)
1350                         priv->queue_to_mac80211[i] = i;
1351                 atomic_set(&priv->queue_stop_count[i], 0);
1352         }
1353
1354         if (iwl_init_drv(priv))
1355                 goto out_free_eeprom;
1356
1357         /* At this point both hw and priv are initialized. */
1358
1359         /********************
1360          * 6. Setup services
1361          ********************/
1362         iwl_setup_deferred_work(priv);
1363         iwl_setup_rx_handlers(priv);
1364
1365         iwl_power_initialize(priv);
1366         iwl_tt_initialize(priv);
1367
1368         snprintf(priv->hw->wiphy->fw_version,
1369                  sizeof(priv->hw->wiphy->fw_version),
1370                  "%s", fw->fw_version);
1371
1372         priv->new_scan_threshold_behaviour =
1373                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1374
1375         priv->phy_calib_chain_noise_reset_cmd =
1376                 fw->ucode_capa.standard_phy_calibration_size;
1377         priv->phy_calib_chain_noise_gain_cmd =
1378                 fw->ucode_capa.standard_phy_calibration_size + 1;
1379
1380         /* initialize all valid contexts */
1381         iwl_init_context(priv, ucode_flags);
1382
1383         /**************************************************
1384          * This is still part of probe() in a sense...
1385          *
1386          * 7. Setup and register with mac80211 and debugfs
1387          **************************************************/
1388         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1389                 goto out_destroy_workqueue;
1390
1391         if (iwl_dbgfs_register(priv, dbgfs_dir))
1392                 goto out_mac80211_unregister;
1393
1394         return op_mode;
1395
1396 out_mac80211_unregister:
1397         iwlagn_mac_unregister(priv);
1398 out_destroy_workqueue:
1399         iwl_tt_exit(priv);
1400         iwl_cancel_deferred_work(priv);
1401         destroy_workqueue(priv->workqueue);
1402         priv->workqueue = NULL;
1403         iwl_uninit_drv(priv);
1404 out_free_eeprom_blob:
1405         kfree(priv->eeprom_blob);
1406 out_free_eeprom:
1407         iwl_free_nvm_data(priv->nvm_data);
1408 out_free_hw:
1409         ieee80211_free_hw(priv->hw);
1410 out:
1411         op_mode = NULL;
1412         return op_mode;
1413 }
1414
1415 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1416 {
1417         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1418
1419         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1420
1421         iwlagn_mac_unregister(priv);
1422
1423         iwl_tt_exit(priv);
1424
1425         kfree(priv->eeprom_blob);
1426         iwl_free_nvm_data(priv->nvm_data);
1427
1428         /*netif_stop_queue(dev); */
1429         flush_workqueue(priv->workqueue);
1430
1431         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1432          * priv->workqueue... so we can't take down the workqueue
1433          * until now... */
1434         destroy_workqueue(priv->workqueue);
1435         priv->workqueue = NULL;
1436
1437         iwl_uninit_drv(priv);
1438
1439         dev_kfree_skb(priv->beacon_skb);
1440
1441         iwl_trans_op_mode_leave(priv->trans);
1442         ieee80211_free_hw(priv->hw);
1443 }
1444
1445 static const char * const desc_lookup_text[] = {
1446         "OK",
1447         "FAIL",
1448         "BAD_PARAM",
1449         "BAD_CHECKSUM",
1450         "NMI_INTERRUPT_WDG",
1451         "SYSASSERT",
1452         "FATAL_ERROR",
1453         "BAD_COMMAND",
1454         "HW_ERROR_TUNE_LOCK",
1455         "HW_ERROR_TEMPERATURE",
1456         "ILLEGAL_CHAN_FREQ",
1457         "VCC_NOT_STABLE",
1458         "FH_ERROR",
1459         "NMI_INTERRUPT_HOST",
1460         "NMI_INTERRUPT_ACTION_PT",
1461         "NMI_INTERRUPT_UNKNOWN",
1462         "UCODE_VERSION_MISMATCH",
1463         "HW_ERROR_ABS_LOCK",
1464         "HW_ERROR_CAL_LOCK_FAIL",
1465         "NMI_INTERRUPT_INST_ACTION_PT",
1466         "NMI_INTERRUPT_DATA_ACTION_PT",
1467         "NMI_TRM_HW_ER",
1468         "NMI_INTERRUPT_TRM",
1469         "NMI_INTERRUPT_BREAK_POINT",
1470         "DEBUG_0",
1471         "DEBUG_1",
1472         "DEBUG_2",
1473         "DEBUG_3",
1474 };
1475
1476 static struct { char *name; u8 num; } advanced_lookup[] = {
1477         { "NMI_INTERRUPT_WDG", 0x34 },
1478         { "SYSASSERT", 0x35 },
1479         { "UCODE_VERSION_MISMATCH", 0x37 },
1480         { "BAD_COMMAND", 0x38 },
1481         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1482         { "FATAL_ERROR", 0x3D },
1483         { "NMI_TRM_HW_ERR", 0x46 },
1484         { "NMI_INTERRUPT_TRM", 0x4C },
1485         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1486         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1487         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1488         { "NMI_INTERRUPT_HOST", 0x66 },
1489         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1490         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1491         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1492         { "ADVANCED_SYSASSERT", 0 },
1493 };
1494
1495 static const char *desc_lookup(u32 num)
1496 {
1497         int i;
1498         int max = ARRAY_SIZE(desc_lookup_text);
1499
1500         if (num < max)
1501                 return desc_lookup_text[num];
1502
1503         max = ARRAY_SIZE(advanced_lookup) - 1;
1504         for (i = 0; i < max; i++) {
1505                 if (advanced_lookup[i].num == num)
1506                         break;
1507         }
1508         return advanced_lookup[i].name;
1509 }
1510
1511 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1512 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1513
1514 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1515 {
1516         struct iwl_trans *trans = priv->trans;
1517         u32 base;
1518         struct iwl_error_event_table table;
1519
1520         base = priv->device_pointers.error_event_table;
1521         if (priv->cur_ucode == IWL_UCODE_INIT) {
1522                 if (!base)
1523                         base = priv->fw->init_errlog_ptr;
1524         } else {
1525                 if (!base)
1526                         base = priv->fw->inst_errlog_ptr;
1527         }
1528
1529         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1530                 IWL_ERR(priv,
1531                         "Not valid error log pointer 0x%08X for %s uCode\n",
1532                         base,
1533                         (priv->cur_ucode == IWL_UCODE_INIT)
1534                                         ? "Init" : "RT");
1535                 return;
1536         }
1537
1538         /*TODO: Update dbgfs with ISR error stats obtained below */
1539         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1540
1541         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1542                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1543                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1544                         priv->status, table.valid);
1545         }
1546
1547         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1548                                       table.data1, table.data2, table.line,
1549                                       table.blink1, table.blink2, table.ilink1,
1550                                       table.ilink2, table.bcon_time, table.gp1,
1551                                       table.gp2, table.gp3, table.ucode_ver,
1552                                       table.hw_ver, 0, table.brd_ver);
1553         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1554                 desc_lookup(table.error_id));
1555         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1556         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1557         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1558         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1559         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1560         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1561         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1562         IWL_ERR(priv, "0x%08X | line\n", table.line);
1563         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1564         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1565         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1566         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1567         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1568         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1569         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1570         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1571         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1572         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1573         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1574         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1575         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1576         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1577         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1578         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1579         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1580         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1581         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1582         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1583         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1584         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1585         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1586         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1587 }
1588
1589 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1590
1591 /**
1592  * iwl_print_event_log - Dump error event log to syslog
1593  *
1594  */
1595 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1596                                u32 num_events, u32 mode,
1597                                int pos, char **buf, size_t bufsz)
1598 {
1599         u32 i;
1600         u32 base;       /* SRAM byte address of event log header */
1601         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1602         u32 ptr;        /* SRAM byte address of log data */
1603         u32 ev, time, data; /* event log data */
1604         unsigned long reg_flags;
1605
1606         struct iwl_trans *trans = priv->trans;
1607
1608         if (num_events == 0)
1609                 return pos;
1610
1611         base = priv->device_pointers.log_event_table;
1612         if (priv->cur_ucode == IWL_UCODE_INIT) {
1613                 if (!base)
1614                         base = priv->fw->init_evtlog_ptr;
1615         } else {
1616                 if (!base)
1617                         base = priv->fw->inst_evtlog_ptr;
1618         }
1619
1620         if (mode == 0)
1621                 event_size = 2 * sizeof(u32);
1622         else
1623                 event_size = 3 * sizeof(u32);
1624
1625         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1626
1627         /* Make sure device is powered up for SRAM reads */
1628         if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1629                 return pos;
1630
1631         /* Set starting address; reads will auto-increment */
1632         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1633
1634         /* "time" is actually "data" for mode 0 (no timestamp).
1635         * place event id # at far right for easier visual parsing. */
1636         for (i = 0; i < num_events; i++) {
1637                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1638                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1639                 if (mode == 0) {
1640                         /* data, ev */
1641                         if (bufsz) {
1642                                 pos += scnprintf(*buf + pos, bufsz - pos,
1643                                                 "EVT_LOG:0x%08x:%04u\n",
1644                                                 time, ev);
1645                         } else {
1646                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1647                                         time, ev);
1648                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1649                                         time, ev);
1650                         }
1651                 } else {
1652                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1653                         if (bufsz) {
1654                                 pos += scnprintf(*buf + pos, bufsz - pos,
1655                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1656                                                  time, data, ev);
1657                         } else {
1658                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1659                                         time, data, ev);
1660                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1661                                         data, ev);
1662                         }
1663                 }
1664         }
1665
1666         /* Allow device to power down */
1667         iwl_trans_release_nic_access(trans, &reg_flags);
1668         return pos;
1669 }
1670
1671 /**
1672  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1673  */
1674 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1675                                     u32 num_wraps, u32 next_entry,
1676                                     u32 size, u32 mode,
1677                                     int pos, char **buf, size_t bufsz)
1678 {
1679         /*
1680          * display the newest DEFAULT_LOG_ENTRIES entries
1681          * i.e the entries just before the next ont that uCode would fill.
1682          */
1683         if (num_wraps) {
1684                 if (next_entry < size) {
1685                         pos = iwl_print_event_log(priv,
1686                                                 capacity - (size - next_entry),
1687                                                 size - next_entry, mode,
1688                                                 pos, buf, bufsz);
1689                         pos = iwl_print_event_log(priv, 0,
1690                                                   next_entry, mode,
1691                                                   pos, buf, bufsz);
1692                 } else
1693                         pos = iwl_print_event_log(priv, next_entry - size,
1694                                                   size, mode, pos, buf, bufsz);
1695         } else {
1696                 if (next_entry < size) {
1697                         pos = iwl_print_event_log(priv, 0, next_entry,
1698                                                   mode, pos, buf, bufsz);
1699                 } else {
1700                         pos = iwl_print_event_log(priv, next_entry - size,
1701                                                   size, mode, pos, buf, bufsz);
1702                 }
1703         }
1704         return pos;
1705 }
1706
1707 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1708
1709 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1710                             char **buf)
1711 {
1712         u32 base;       /* SRAM byte address of event log header */
1713         u32 capacity;   /* event log capacity in # entries */
1714         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1715         u32 num_wraps;  /* # times uCode wrapped to top of log */
1716         u32 next_entry; /* index of next entry to be written by uCode */
1717         u32 size;       /* # entries that we'll print */
1718         u32 logsize;
1719         int pos = 0;
1720         size_t bufsz = 0;
1721         struct iwl_trans *trans = priv->trans;
1722
1723         base = priv->device_pointers.log_event_table;
1724         if (priv->cur_ucode == IWL_UCODE_INIT) {
1725                 logsize = priv->fw->init_evtlog_size;
1726                 if (!base)
1727                         base = priv->fw->init_evtlog_ptr;
1728         } else {
1729                 logsize = priv->fw->inst_evtlog_size;
1730                 if (!base)
1731                         base = priv->fw->inst_evtlog_ptr;
1732         }
1733
1734         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1735                 IWL_ERR(priv,
1736                         "Invalid event log pointer 0x%08X for %s uCode\n",
1737                         base,
1738                         (priv->cur_ucode == IWL_UCODE_INIT)
1739                                         ? "Init" : "RT");
1740                 return -EINVAL;
1741         }
1742
1743         /* event log header */
1744         capacity = iwl_trans_read_mem32(trans, base);
1745         mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1746         num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1747         next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1748
1749         if (capacity > logsize) {
1750                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1751                         "entries\n", capacity, logsize);
1752                 capacity = logsize;
1753         }
1754
1755         if (next_entry > logsize) {
1756                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1757                         next_entry, logsize);
1758                 next_entry = logsize;
1759         }
1760
1761         size = num_wraps ? capacity : next_entry;
1762
1763         /* bail out if nothing in log */
1764         if (size == 0) {
1765                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1766                 return pos;
1767         }
1768
1769         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1770                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1771                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1772         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1773                 size);
1774
1775 #ifdef CONFIG_IWLWIFI_DEBUG
1776         if (buf) {
1777                 if (full_log)
1778                         bufsz = capacity * 48;
1779                 else
1780                         bufsz = size * 48;
1781                 *buf = kmalloc(bufsz, GFP_KERNEL);
1782                 if (!*buf)
1783                         return -ENOMEM;
1784         }
1785         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1786                 /*
1787                  * if uCode has wrapped back to top of log,
1788                  * start at the oldest entry,
1789                  * i.e the next one that uCode would fill.
1790                  */
1791                 if (num_wraps)
1792                         pos = iwl_print_event_log(priv, next_entry,
1793                                                 capacity - next_entry, mode,
1794                                                 pos, buf, bufsz);
1795                 /* (then/else) start at top of log */
1796                 pos = iwl_print_event_log(priv, 0,
1797                                           next_entry, mode, pos, buf, bufsz);
1798         } else
1799                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1800                                                 next_entry, size, mode,
1801                                                 pos, buf, bufsz);
1802 #else
1803         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1804                                         next_entry, size, mode,
1805                                         pos, buf, bufsz);
1806 #endif
1807         return pos;
1808 }
1809
1810 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1811 {
1812         unsigned int reload_msec;
1813         unsigned long reload_jiffies;
1814
1815         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1816                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1817
1818         /* uCode is no longer loaded. */
1819         priv->ucode_loaded = false;
1820
1821         /* Set the FW error flag -- cleared on iwl_down */
1822         set_bit(STATUS_FW_ERROR, &priv->status);
1823
1824         iwl_abort_notification_waits(&priv->notif_wait);
1825
1826         /* Keep the restart process from trying to send host
1827          * commands by clearing the ready bit */
1828         clear_bit(STATUS_READY, &priv->status);
1829
1830         if (!ondemand) {
1831                 /*
1832                  * If firmware keep reloading, then it indicate something
1833                  * serious wrong and firmware having problem to recover
1834                  * from it. Instead of keep trying which will fill the syslog
1835                  * and hang the system, let's just stop it
1836                  */
1837                 reload_jiffies = jiffies;
1838                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1839                                         (long) priv->reload_jiffies);
1840                 priv->reload_jiffies = reload_jiffies;
1841                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1842                         priv->reload_count++;
1843                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1844                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1845                                 return;
1846                         }
1847                 } else
1848                         priv->reload_count = 0;
1849         }
1850
1851         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1852                 if (iwlwifi_mod_params.restart_fw) {
1853                         IWL_DEBUG_FW_ERRORS(priv,
1854                                   "Restarting adapter due to uCode error.\n");
1855                         queue_work(priv->workqueue, &priv->restart);
1856                 } else
1857                         IWL_DEBUG_FW_ERRORS(priv,
1858                                   "Detected FW error, but not restarting\n");
1859         }
1860 }
1861
1862 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1863 {
1864         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1865
1866         IWL_ERR(priv, "Loaded firmware version: %s\n",
1867                 priv->fw->fw_version);
1868
1869         iwl_dump_nic_error_log(priv);
1870         iwl_dump_nic_event_log(priv, false, NULL);
1871
1872         iwlagn_fw_error(priv, false);
1873 }
1874
1875 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1876 {
1877         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1878
1879         if (!iwl_check_for_ct_kill(priv)) {
1880                 IWL_ERR(priv, "Restarting adapter queue is full\n");
1881                 iwlagn_fw_error(priv, false);
1882         }
1883 }
1884
1885 #define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1886
1887 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1888 {
1889         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1890
1891         /* SKU Control */
1892         iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1893                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1894                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1895                                 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1896                                         CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1897                                 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1898                                         CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1899
1900         /* write radio config values to register */
1901         if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1902                 u32 reg_val =
1903                         priv->nvm_data->radio_cfg_type <<
1904                                 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
1905                         priv->nvm_data->radio_cfg_step <<
1906                                 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
1907                         priv->nvm_data->radio_cfg_dash <<
1908                                 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
1909
1910                 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1911                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
1912                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
1913                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
1914                                         reg_val);
1915
1916                 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
1917                          priv->nvm_data->radio_cfg_type,
1918                          priv->nvm_data->radio_cfg_step,
1919                          priv->nvm_data->radio_cfg_dash);
1920         } else {
1921                 WARN_ON(1);
1922         }
1923
1924         /* set CSR_HW_CONFIG_REG for uCode use */
1925         iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
1926                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
1927                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
1928
1929         /* W/A : NIC is stuck in a reset state after Early PCIe power off
1930          * (PCIe power is lost before PERST# is asserted),
1931          * causing ME FW to lose ownership and not being able to obtain it back.
1932          */
1933         iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
1934                                APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
1935                                ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
1936
1937         if (priv->lib->nic_config)
1938                 priv->lib->nic_config(priv);
1939 }
1940
1941 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
1942 {
1943         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1944
1945         clear_bit(STATUS_READY, &priv->status);
1946         IWL_ERR(priv, "RF is used by WiMAX\n");
1947 }
1948
1949 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
1950 {
1951         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1952         int mq = priv->queue_to_mac80211[queue];
1953
1954         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1955                 return;
1956
1957         if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
1958                 IWL_DEBUG_TX_QUEUES(priv,
1959                         "queue %d (mac80211 %d) already stopped\n",
1960                         queue, mq);
1961                 return;
1962         }
1963
1964         set_bit(mq, &priv->transport_queue_stop);
1965         ieee80211_stop_queue(priv->hw, mq);
1966 }
1967
1968 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
1969 {
1970         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1971         int mq = priv->queue_to_mac80211[queue];
1972
1973         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
1974                 return;
1975
1976         if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
1977                 IWL_DEBUG_TX_QUEUES(priv,
1978                         "queue %d (mac80211 %d) already awake\n",
1979                         queue, mq);
1980                 return;
1981         }
1982
1983         clear_bit(mq, &priv->transport_queue_stop);
1984
1985         if (!priv->passive_no_rx)
1986                 ieee80211_wake_queue(priv->hw, mq);
1987 }
1988
1989 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
1990 {
1991         int mq;
1992
1993         if (!priv->passive_no_rx)
1994                 return;
1995
1996         for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
1997                 if (!test_bit(mq, &priv->transport_queue_stop)) {
1998                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d\n", mq);
1999                         ieee80211_wake_queue(priv->hw, mq);
2000                 } else {
2001                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d\n", mq);
2002                 }
2003         }
2004
2005         priv->passive_no_rx = false;
2006 }
2007
2008 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2009 {
2010         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2011         struct ieee80211_tx_info *info;
2012
2013         info = IEEE80211_SKB_CB(skb);
2014         iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2015         ieee80211_free_txskb(priv->hw, skb);
2016 }
2017
2018 static bool iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2019 {
2020         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2021
2022         if (state)
2023                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2024         else
2025                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2026
2027         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2028
2029         return false;
2030 }
2031
2032 static void iwl_napi_add(struct iwl_op_mode *op_mode,
2033                          struct napi_struct *napi,
2034                          struct net_device *napi_dev,
2035                          int (*poll)(struct napi_struct *, int),
2036                          int weight)
2037 {
2038         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2039
2040         ieee80211_napi_add(priv->hw, napi, napi_dev, poll, weight);
2041 }
2042
2043 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2044         .start = iwl_op_mode_dvm_start,
2045         .stop = iwl_op_mode_dvm_stop,
2046         .rx = iwl_rx_dispatch,
2047         .queue_full = iwl_stop_sw_queue,
2048         .queue_not_full = iwl_wake_sw_queue,
2049         .hw_rf_kill = iwl_set_hw_rfkill_state,
2050         .free_skb = iwl_free_skb,
2051         .nic_error = iwl_nic_error,
2052         .cmd_queue_full = iwl_cmd_queue_full,
2053         .nic_config = iwl_nic_config,
2054         .wimax_active = iwl_wimax_active,
2055         .napi_add = iwl_napi_add,
2056 };
2057
2058 /*****************************************************************************
2059  *
2060  * driver and module entry point
2061  *
2062  *****************************************************************************/
2063 static int __init iwl_init(void)
2064 {
2065
2066         int ret;
2067
2068         ret = iwlagn_rate_control_register();
2069         if (ret) {
2070                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2071                 return ret;
2072         }
2073
2074         ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2075         if (ret) {
2076                 pr_err("Unable to register op_mode: %d\n", ret);
2077                 iwlagn_rate_control_unregister();
2078         }
2079
2080         return ret;
2081 }
2082 module_init(iwl_init);
2083
2084 static void __exit iwl_exit(void)
2085 {
2086         iwl_opmode_deregister("iwldvm");
2087         iwlagn_rate_control_unregister();
2088 }
2089 module_exit(iwl_exit);