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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2012 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 /*
  68  * module name, copyright, version, etc.
  69  */
  70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  71
  72 #ifdef CONFIG_IWLWIFI_DEBUG
  73 #define VD "d"
  74 #else
  75 #define VD
  76 #endif
  77
  78 #define DRV_VERSION     IWLWIFI_VERSION VD
  79
  80
  81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  82 MODULE_VERSION(DRV_VERSION);
  83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  84 MODULE_LICENSE("GPL");
  85
  86 static const struct iwl_op_mode_ops iwl_dvm_ops;
  87
  88 void iwl_update_chain_flags(struct iwl_priv *priv)
  89 {
  90         struct iwl_rxon_context *ctx;
  91
  92         for_each_context(priv, ctx) {
  93                 iwlagn_set_rxon_chain(priv, ctx);
  94                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  95                         iwlagn_commit_rxon(priv, ctx);
  96         }
  97 }
  98
  99 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
 100 static void iwl_set_beacon_tim(struct iwl_priv *priv,
 101                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
 102                                u8 *beacon, u32 frame_size)
 103 {
 104         u16 tim_idx;
 105         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
 106
 107         /*
 108          * The index is relative to frame start but we start looking at the
 109          * variable-length part of the beacon.
 110          */
 111         tim_idx = mgmt->u.beacon.variable - beacon;
 112
 113         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 114         while ((tim_idx < (frame_size - 2)) &&
 115                         (beacon[tim_idx] != WLAN_EID_TIM))
 116                 tim_idx += beacon[tim_idx+1] + 2;
 117
 118         /* If TIM field was found, set variables */
 119         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 120                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 121                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 122         } else
 123                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 124 }
 125
 126 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 127 {
 128         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 129         struct iwl_host_cmd cmd = {
 130                 .id = REPLY_TX_BEACON,
 131                 .flags = CMD_SYNC,
 132         };
 133         struct ieee80211_tx_info *info;
 134         u32 frame_size;
 135         u32 rate_flags;
 136         u32 rate;
 137
 138         /*
 139          * We have to set up the TX command, the TX Beacon command, and the
 140          * beacon contents.
 141          */
 142
 143         lockdep_assert_held(&priv->mutex);
 144
 145         if (!priv->beacon_ctx) {
 146                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 147                 return 0;
 148         }
 149
 150         if (WARN_ON(!priv->beacon_skb))
 151                 return -EINVAL;
 152
 153         /* Allocate beacon command */
 154         if (!priv->beacon_cmd)
 155                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 156         tx_beacon_cmd = priv->beacon_cmd;
 157         if (!tx_beacon_cmd)
 158                 return -ENOMEM;
 159
 160         frame_size = priv->beacon_skb->len;
 161
 162         /* Set up TX command fields */
 163         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 164         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 165         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 166         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 167                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 168
 169         /* Set up TX beacon command fields */
 170         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 171                            frame_size);
 172
 173         /* Set up packet rate and flags */
 174         info = IEEE80211_SKB_CB(priv->beacon_skb);
 175
 176         /*
 177          * Let's set up the rate at least somewhat correctly;
 178          * it will currently not actually be used by the uCode,
 179          * it uses the broadcast station's rate instead.
 180          */
 181         if (info->control.rates[0].idx < 0 ||
 182             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 183                 rate = 0;
 184         else
 185                 rate = info->control.rates[0].idx;
 186
 187         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 188                                               priv->eeprom_data->valid_tx_ant);
 189         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 190
 191         /* In mac80211, rates for 5 GHz start at 0 */
 192         if (info->band == IEEE80211_BAND_5GHZ)
 193                 rate += IWL_FIRST_OFDM_RATE;
 194         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 195                 rate_flags |= RATE_MCS_CCK_MSK;
 196
 197         tx_beacon_cmd->tx.rate_n_flags =
 198                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 199
 200         /* Submit command */
 201         cmd.len[0] = sizeof(*tx_beacon_cmd);
 202         cmd.data[0] = tx_beacon_cmd;
 203         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 204         cmd.len[1] = frame_size;
 205         cmd.data[1] = priv->beacon_skb->data;
 206         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 207
 208         return iwl_dvm_send_cmd(priv, &cmd);
 209 }
 210
 211 static void iwl_bg_beacon_update(struct work_struct *work)
 212 {
 213         struct iwl_priv *priv =
 214                 container_of(work, struct iwl_priv, beacon_update);
 215         struct sk_buff *beacon;
 216
 217         mutex_lock(&priv->mutex);
 218         if (!priv->beacon_ctx) {
 219                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 220                 goto out;
 221         }
 222
 223         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 224                 /*
 225                  * The ucode will send beacon notifications even in
 226                  * IBSS mode, but we don't want to process them. But
 227                  * we need to defer the type check to here due to
 228                  * requiring locking around the beacon_ctx access.
 229                  */
 230                 goto out;
 231         }
 232
 233         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 234         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 235         if (!beacon) {
 236                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 237                 goto out;
 238         }
 239
 240         /* new beacon skb is allocated every time; dispose previous.*/
 241         dev_kfree_skb(priv->beacon_skb);
 242
 243         priv->beacon_skb = beacon;
 244
 245         iwlagn_send_beacon_cmd(priv);
 246  out:
 247         mutex_unlock(&priv->mutex);
 248 }
 249
 250 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 251 {
 252         struct iwl_priv *priv =
 253                 container_of(work, struct iwl_priv, bt_runtime_config);
 254
 255         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 256                 return;
 257
 258         /* dont send host command if rf-kill is on */
 259         if (!iwl_is_ready_rf(priv))
 260                 return;
 261         iwlagn_send_advance_bt_config(priv);
 262 }
 263
 264 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 265 {
 266         struct iwl_priv *priv =
 267                 container_of(work, struct iwl_priv, bt_full_concurrency);
 268         struct iwl_rxon_context *ctx;
 269
 270         mutex_lock(&priv->mutex);
 271
 272         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 273                 goto out;
 274
 275         /* dont send host command if rf-kill is on */
 276         if (!iwl_is_ready_rf(priv))
 277                 goto out;
 278
 279         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 280                        priv->bt_full_concurrent ?
 281                        "full concurrency" : "3-wire");
 282
 283         /*
 284          * LQ & RXON updated cmds must be sent before BT Config cmd
 285          * to avoid 3-wire collisions
 286          */
 287         for_each_context(priv, ctx) {
 288                 iwlagn_set_rxon_chain(priv, ctx);
 289                 iwlagn_commit_rxon(priv, ctx);
 290         }
 291
 292         iwlagn_send_advance_bt_config(priv);
 293 out:
 294         mutex_unlock(&priv->mutex);
 295 }
 296
 297 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 298 {
 299         struct iwl_statistics_cmd statistics_cmd = {
 300                 .configuration_flags =
 301                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 302         };
 303
 304         if (flags & CMD_ASYNC)
 305                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 306                                         CMD_ASYNC,
 307                                         sizeof(struct iwl_statistics_cmd),
 308                                         &statistics_cmd);
 309         else
 310                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 311                                         CMD_SYNC,
 312                                         sizeof(struct iwl_statistics_cmd),
 313                                         &statistics_cmd);
 314 }
 315
 316 /**
 317  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 318  *
 319  * This callback is provided in order to send a statistics request.
 320  *
 321  * This timer function is continually reset to execute within
 322  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 323  * was received.  We need to ensure we receive the statistics in order
 324  * to update the temperature used for calibrating the TXPOWER.
 325  */
 326 static void iwl_bg_statistics_periodic(unsigned long data)
 327 {
 328         struct iwl_priv *priv = (struct iwl_priv *)data;
 329
 330         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 331                 return;
 332
 333         /* dont send host command if rf-kill is on */
 334         if (!iwl_is_ready_rf(priv))
 335                 return;
 336
 337         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 338 }
 339
 340
 341 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 342                                         u32 start_idx, u32 num_events,
 343                                         u32 capacity, u32 mode)
 344 {
 345         u32 i;
 346         u32 ptr;        /* SRAM byte address of log data */
 347         u32 ev, time, data; /* event log data */
 348         unsigned long reg_flags;
 349
 350         if (mode == 0)
 351                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 352         else
 353                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 354
 355         /* Make sure device is powered up for SRAM reads */
 356         spin_lock_irqsave(&priv->trans->reg_lock, reg_flags);
 357         if (unlikely(!iwl_grab_nic_access(priv->trans))) {
 358                 spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
 359                 return;
 360         }
 361
 362         /* Set starting address; reads will auto-increment */
 363         iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 364
 365         /*
 366          * Refuse to read more than would have fit into the log from
 367          * the current start_idx. This used to happen due to the race
 368          * described below, but now WARN because the code below should
 369          * prevent it from happening here.
 370          */
 371         if (WARN_ON(num_events > capacity - start_idx))
 372                 num_events = capacity - start_idx;
 373
 374         /*
 375          * "time" is actually "data" for mode 0 (no timestamp).
 376          * place event id # at far right for easier visual parsing.
 377          */
 378         for (i = 0; i < num_events; i++) {
 379                 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 380                 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 381                 if (mode == 0) {
 382                         trace_iwlwifi_dev_ucode_cont_event(
 383                                         priv->trans->dev, 0, time, ev);
 384                 } else {
 385                         data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 386                         trace_iwlwifi_dev_ucode_cont_event(
 387                                         priv->trans->dev, time, data, ev);
 388                 }
 389         }
 390         /* Allow device to power down */
 391         iwl_release_nic_access(priv->trans);
 392         spin_unlock_irqrestore(&priv->trans->reg_lock, reg_flags);
 393 }
 394
 395 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 396 {
 397         u32 capacity;   /* event log capacity in # entries */
 398         struct {
 399                 u32 capacity;
 400                 u32 mode;
 401                 u32 wrap_counter;
 402                 u32 write_counter;
 403         } __packed read;
 404         u32 base;       /* SRAM byte address of event log header */
 405         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 406         u32 num_wraps;  /* # times uCode wrapped to top of log */
 407         u32 next_entry; /* index of next entry to be written by uCode */
 408
 409         base = priv->device_pointers.log_event_table;
 410         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 411                 iwl_read_targ_mem_bytes(priv->trans, base, &read, sizeof(read));
 412                 capacity = read.capacity;
 413                 mode = read.mode;
 414                 num_wraps = read.wrap_counter;
 415                 next_entry = read.write_counter;
 416         } else
 417                 return;
 418
 419         /*
 420          * Unfortunately, the uCode doesn't use temporary variables.
 421          * Therefore, it can happen that we read next_entry == capacity,
 422          * which really means next_entry == 0.
 423          */
 424         if (unlikely(next_entry == capacity))
 425                 next_entry = 0;
 426         /*
 427          * Additionally, the uCode increases the write pointer before
 428          * the wraps counter, so if the write pointer is smaller than
 429          * the old write pointer (wrap occurred) but we read that no
 430          * wrap occurred, we actually read between the next_entry and
 431          * num_wraps update (this does happen in practice!!) -- take
 432          * that into account by increasing num_wraps.
 433          */
 434         if (unlikely(next_entry < priv->event_log.next_entry &&
 435                      num_wraps == priv->event_log.num_wraps))
 436                 num_wraps++;
 437
 438         if (num_wraps == priv->event_log.num_wraps) {
 439                 iwl_print_cont_event_trace(
 440                         priv, base, priv->event_log.next_entry,
 441                         next_entry - priv->event_log.next_entry,
 442                         capacity, mode);
 443
 444                 priv->event_log.non_wraps_count++;
 445         } else {
 446                 if (num_wraps - priv->event_log.num_wraps > 1)
 447                         priv->event_log.wraps_more_count++;
 448                 else
 449                         priv->event_log.wraps_once_count++;
 450
 451                 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 452                                 num_wraps - priv->event_log.num_wraps,
 453                                 next_entry, priv->event_log.next_entry);
 454
 455                 if (next_entry < priv->event_log.next_entry) {
 456                         iwl_print_cont_event_trace(
 457                                 priv, base, priv->event_log.next_entry,
 458                                 capacity - priv->event_log.next_entry,
 459                                 capacity, mode);
 460
 461                         iwl_print_cont_event_trace(
 462                                 priv, base, 0, next_entry, capacity, mode);
 463                 } else {
 464                         iwl_print_cont_event_trace(
 465                                 priv, base, next_entry,
 466                                 capacity - next_entry,
 467                                 capacity, mode);
 468
 469                         iwl_print_cont_event_trace(
 470                                 priv, base, 0, next_entry, capacity, mode);
 471                 }
 472         }
 473
 474         priv->event_log.num_wraps = num_wraps;
 475         priv->event_log.next_entry = next_entry;
 476 }
 477
 478 /**
 479  * iwl_bg_ucode_trace - Timer callback to log ucode event
 480  *
 481  * The timer is continually set to execute every
 482  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 483  * this function is to perform continuous uCode event logging operation
 484  * if enabled
 485  */
 486 static void iwl_bg_ucode_trace(unsigned long data)
 487 {
 488         struct iwl_priv *priv = (struct iwl_priv *)data;
 489
 490         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 491                 return;
 492
 493         if (priv->event_log.ucode_trace) {
 494                 iwl_continuous_event_trace(priv);
 495                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 496                 mod_timer(&priv->ucode_trace,
 497                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 498         }
 499 }
 500
 501 static void iwl_bg_tx_flush(struct work_struct *work)
 502 {
 503         struct iwl_priv *priv =
 504                 container_of(work, struct iwl_priv, tx_flush);
 505
 506         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 507                 return;
 508
 509         /* do nothing if rf-kill is on */
 510         if (!iwl_is_ready_rf(priv))
 511                 return;
 512
 513         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 514         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 515 }
 516
 517 /*
 518  * queue/FIFO/AC mapping definitions
 519  */
 520
 521 static const u8 iwlagn_bss_ac_to_fifo[] = {
 522         IWL_TX_FIFO_VO,
 523         IWL_TX_FIFO_VI,
 524         IWL_TX_FIFO_BE,
 525         IWL_TX_FIFO_BK,
 526 };
 527
 528 static const u8 iwlagn_bss_ac_to_queue[] = {
 529         0, 1, 2, 3,
 530 };
 531
 532 static const u8 iwlagn_pan_ac_to_fifo[] = {
 533         IWL_TX_FIFO_VO_IPAN,
 534         IWL_TX_FIFO_VI_IPAN,
 535         IWL_TX_FIFO_BE_IPAN,
 536         IWL_TX_FIFO_BK_IPAN,
 537 };
 538
 539 static const u8 iwlagn_pan_ac_to_queue[] = {
 540         7, 6, 5, 4,
 541 };
 542
 543 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 544 {
 545         int i;
 546
 547         /*
 548          * The default context is always valid,
 549          * the PAN context depends on uCode.
 550          */
 551         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 552         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 553                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 554
 555         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 556                 priv->contexts[i].ctxid = i;
 557
 558         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 559         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 560         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 561         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 562         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 563         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 564         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 565         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 566         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 567         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 568                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 569         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 570                 BIT(NL80211_IFTYPE_STATION);
 571         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 572         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 573         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 574         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 575         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 576                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 577         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 578                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 579
 580         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 581         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 582                 REPLY_WIPAN_RXON_TIMING;
 583         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 584                 REPLY_WIPAN_RXON_ASSOC;
 585         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 586         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 587         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 588         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 589         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 590         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 591                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 592
 593         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 594                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 595                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 596                         BIT(NL80211_IFTYPE_P2P_GO);
 597
 598         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 599         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 600         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 601         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 602                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 603         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 604                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 605         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 606
 607         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 608 }
 609
 610 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 611 {
 612         struct iwl_ct_kill_config cmd;
 613         struct iwl_ct_kill_throttling_config adv_cmd;
 614         int ret = 0;
 615
 616         iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 617                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 618
 619         priv->thermal_throttle.ct_kill_toggle = false;
 620
 621         if (priv->cfg->base_params->support_ct_kill_exit) {
 622                 adv_cmd.critical_temperature_enter =
 623                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 624                 adv_cmd.critical_temperature_exit =
 625                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 626
 627                 ret = iwl_dvm_send_cmd_pdu(priv,
 628                                        REPLY_CT_KILL_CONFIG_CMD,
 629                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 630                 if (ret)
 631                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 632                 else
 633                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 634                                 "succeeded, critical temperature enter is %d,"
 635                                 "exit is %d\n",
 636                                 priv->hw_params.ct_kill_threshold,
 637                                 priv->hw_params.ct_kill_exit_threshold);
 638         } else {
 639                 cmd.critical_temperature_R =
 640                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 641
 642                 ret = iwl_dvm_send_cmd_pdu(priv,
 643                                        REPLY_CT_KILL_CONFIG_CMD,
 644                                        CMD_SYNC, sizeof(cmd), &cmd);
 645                 if (ret)
 646                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 647                 else
 648                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 649                                 "succeeded, "
 650                                 "critical temperature is %d\n",
 651                                 priv->hw_params.ct_kill_threshold);
 652         }
 653 }
 654
 655 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 656 {
 657         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 658         struct iwl_host_cmd cmd = {
 659                 .id = CALIBRATION_CFG_CMD,
 660                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 661                 .data = { &calib_cfg_cmd, },
 662         };
 663
 664         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 665         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 666         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 667
 668         return iwl_dvm_send_cmd(priv, &cmd);
 669 }
 670
 671
 672 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 673 {
 674         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 675           .valid = cpu_to_le32(valid_tx_ant),
 676         };
 677
 678         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 679                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 680                 return iwl_dvm_send_cmd_pdu(priv,
 681                                         TX_ANT_CONFIGURATION_CMD,
 682                                         CMD_SYNC,
 683                                         sizeof(struct iwl_tx_ant_config_cmd),
 684                                         &tx_ant_cmd);
 685         } else {
 686                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 687                 return -EOPNOTSUPP;
 688         }
 689 }
 690
 691 static void iwl_send_bt_config(struct iwl_priv *priv)
 692 {
 693         struct iwl_bt_cmd bt_cmd = {
 694                 .lead_time = BT_LEAD_TIME_DEF,
 695                 .max_kill = BT_MAX_KILL_DEF,
 696                 .kill_ack_mask = 0,
 697                 .kill_cts_mask = 0,
 698         };
 699
 700         if (!iwlwifi_mod_params.bt_coex_active)
 701                 bt_cmd.flags = BT_COEX_DISABLE;
 702         else
 703                 bt_cmd.flags = BT_COEX_ENABLE;
 704
 705         priv->bt_enable_flag = bt_cmd.flags;
 706         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 707                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 708
 709         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 710                              CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
 711                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 712 }
 713
 714 /**
 715  * iwl_alive_start - called after REPLY_ALIVE notification received
 716  *                   from protocol/runtime uCode (initialization uCode's
 717  *                   Alive gets handled by iwl_init_alive_start()).
 718  */
 719 int iwl_alive_start(struct iwl_priv *priv)
 720 {
 721         int ret = 0;
 722         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 723
 724         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 725
 726         /* After the ALIVE response, we can send host commands to the uCode */
 727         set_bit(STATUS_ALIVE, &priv->status);
 728
 729         if (iwl_is_rfkill(priv))
 730                 return -ERFKILL;
 731
 732         if (priv->event_log.ucode_trace) {
 733                 /* start collecting data now */
 734                 mod_timer(&priv->ucode_trace, jiffies);
 735         }
 736
 737         /* download priority table before any calibration request */
 738         if (priv->cfg->bt_params &&
 739             priv->cfg->bt_params->advanced_bt_coexist) {
 740                 /* Configure Bluetooth device coexistence support */
 741                 if (priv->cfg->bt_params->bt_sco_disable)
 742                         priv->bt_enable_pspoll = false;
 743                 else
 744                         priv->bt_enable_pspoll = true;
 745
 746                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 747                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 748                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 749                 iwlagn_send_advance_bt_config(priv);
 750                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 751                 priv->cur_rssi_ctx = NULL;
 752
 753                 iwl_send_prio_tbl(priv);
 754
 755                 /* FIXME: w/a to force change uCode BT state machine */
 756                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 757                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 758                 if (ret)
 759                         return ret;
 760                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 761                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 762                 if (ret)
 763                         return ret;
 764         } else {
 765                 /*
 766                  * default is 2-wire BT coexexistence support
 767                  */
 768                 iwl_send_bt_config(priv);
 769         }
 770
 771         /*
 772          * Perform runtime calibrations, including DC calibration.
 773          */
 774         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 775
 776         ieee80211_wake_queues(priv->hw);
 777
 778         /* Configure Tx antenna selection based on H/W config */
 779         iwlagn_send_tx_ant_config(priv, priv->eeprom_data->valid_tx_ant);
 780
 781         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 782                 struct iwl_rxon_cmd *active_rxon =
 783                                 (struct iwl_rxon_cmd *)&ctx->active;
 784                 /* apply any changes in staging */
 785                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 786                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 787         } else {
 788                 struct iwl_rxon_context *tmp;
 789                 /* Initialize our rx_config data */
 790                 for_each_context(priv, tmp)
 791                         iwl_connection_init_rx_config(priv, tmp);
 792
 793                 iwlagn_set_rxon_chain(priv, ctx);
 794         }
 795
 796         if (!priv->wowlan) {
 797                 /* WoWLAN ucode will not reply in the same way, skip it */
 798                 iwl_reset_run_time_calib(priv);
 799         }
 800
 801         set_bit(STATUS_READY, &priv->status);
 802
 803         /* Configure the adapter for unassociated operation */
 804         ret = iwlagn_commit_rxon(priv, ctx);
 805         if (ret)
 806                 return ret;
 807
 808         /* At this point, the NIC is initialized and operational */
 809         iwl_rf_kill_ct_config(priv);
 810
 811         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 812
 813         return iwl_power_update_mode(priv, true);
 814 }
 815
 816 /**
 817  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 818  * @priv: iwl priv struct
 819  *
 820  * This is called during iwl_down() to make sure that in the case
 821  * we're coming there from a hardware restart mac80211 will be
 822  * able to reconfigure stations -- if we're getting there in the
 823  * normal down flow then the stations will already be cleared.
 824  */
 825 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 826 {
 827         struct iwl_rxon_context *ctx;
 828
 829         spin_lock_bh(&priv->sta_lock);
 830         memset(priv->stations, 0, sizeof(priv->stations));
 831         priv->num_stations = 0;
 832
 833         priv->ucode_key_table = 0;
 834
 835         for_each_context(priv, ctx) {
 836                 /*
 837                  * Remove all key information that is not stored as part
 838                  * of station information since mac80211 may not have had
 839                  * a chance to remove all the keys. When device is
 840                  * reconfigured by mac80211 after an error all keys will
 841                  * be reconfigured.
 842                  */
 843                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 844                 ctx->key_mapping_keys = 0;
 845         }
 846
 847         spin_unlock_bh(&priv->sta_lock);
 848 }
 849
 850 void iwl_down(struct iwl_priv *priv)
 851 {
 852         int exit_pending;
 853
 854         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 855
 856         lockdep_assert_held(&priv->mutex);
 857
 858         iwl_scan_cancel_timeout(priv, 200);
 859
 860         /*
 861          * If active, scanning won't cancel it, so say it expired.
 862          * No race since we hold the mutex here and a new one
 863          * can't come in at this time.
 864          */
 865         ieee80211_remain_on_channel_expired(priv->hw);
 866
 867         exit_pending =
 868                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 869
 870         iwl_clear_ucode_stations(priv, NULL);
 871         iwl_dealloc_bcast_stations(priv);
 872         iwl_clear_driver_stations(priv);
 873
 874         /* reset BT coex data */
 875         priv->bt_status = 0;
 876         priv->cur_rssi_ctx = NULL;
 877         priv->bt_is_sco = 0;
 878         if (priv->cfg->bt_params)
 879                 priv->bt_traffic_load =
 880                          priv->cfg->bt_params->bt_init_traffic_load;
 881         else
 882                 priv->bt_traffic_load = 0;
 883         priv->bt_full_concurrent = false;
 884         priv->bt_ci_compliance = 0;
 885
 886         /* Wipe out the EXIT_PENDING status bit if we are not actually
 887          * exiting the module */
 888         if (!exit_pending)
 889                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 890
 891         if (priv->mac80211_registered)
 892                 ieee80211_stop_queues(priv->hw);
 893
 894         priv->ucode_loaded = false;
 895         iwl_trans_stop_device(priv->trans);
 896
 897         /* Set num_aux_in_flight must be done after the transport is stopped */
 898         atomic_set(&priv->num_aux_in_flight, 0);
 899
 900         /* Clear out all status bits but a few that are stable across reset */
 901         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 902                                 STATUS_RF_KILL_HW |
 903                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 904                                 STATUS_FW_ERROR |
 905                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 906                                 STATUS_EXIT_PENDING;
 907
 908         dev_kfree_skb(priv->beacon_skb);
 909         priv->beacon_skb = NULL;
 910 }
 911
 912 /*****************************************************************************
 913  *
 914  * Workqueue callbacks
 915  *
 916  *****************************************************************************/
 917
 918 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 919 {
 920         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 921                         run_time_calib_work);
 922
 923         mutex_lock(&priv->mutex);
 924
 925         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 926             test_bit(STATUS_SCANNING, &priv->status)) {
 927                 mutex_unlock(&priv->mutex);
 928                 return;
 929         }
 930
 931         if (priv->start_calib) {
 932                 iwl_chain_noise_calibration(priv);
 933                 iwl_sensitivity_calibration(priv);
 934         }
 935
 936         mutex_unlock(&priv->mutex);
 937 }
 938
 939 void iwlagn_prepare_restart(struct iwl_priv *priv)
 940 {
 941         bool bt_full_concurrent;
 942         u8 bt_ci_compliance;
 943         u8 bt_load;
 944         u8 bt_status;
 945         bool bt_is_sco;
 946         int i;
 947
 948         lockdep_assert_held(&priv->mutex);
 949
 950         priv->is_open = 0;
 951
 952         /*
 953          * __iwl_down() will clear the BT status variables,
 954          * which is correct, but when we restart we really
 955          * want to keep them so restore them afterwards.
 956          *
 957          * The restart process will later pick them up and
 958          * re-configure the hw when we reconfigure the BT
 959          * command.
 960          */
 961         bt_full_concurrent = priv->bt_full_concurrent;
 962         bt_ci_compliance = priv->bt_ci_compliance;
 963         bt_load = priv->bt_traffic_load;
 964         bt_status = priv->bt_status;
 965         bt_is_sco = priv->bt_is_sco;
 966
 967         iwl_down(priv);
 968
 969         priv->bt_full_concurrent = bt_full_concurrent;
 970         priv->bt_ci_compliance = bt_ci_compliance;
 971         priv->bt_traffic_load = bt_load;
 972         priv->bt_status = bt_status;
 973         priv->bt_is_sco = bt_is_sco;
 974
 975         /* reset aggregation queues */
 976         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
 977                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 978         /* and stop counts */
 979         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
 980                 atomic_set(&priv->queue_stop_count[i], 0);
 981
 982         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
 983 }
 984
 985 static void iwl_bg_restart(struct work_struct *data)
 986 {
 987         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
 988
 989         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 990                 return;
 991
 992         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
 993                 mutex_lock(&priv->mutex);
 994                 iwlagn_prepare_restart(priv);
 995                 mutex_unlock(&priv->mutex);
 996                 iwl_cancel_deferred_work(priv);
 997                 ieee80211_restart_hw(priv->hw);
 998         } else {
 999                 WARN_ON(1);
1000         }
1001 }
1002
1003
1004
1005
1006 void iwlagn_disable_roc(struct iwl_priv *priv)
1007 {
1008         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1009
1010         lockdep_assert_held(&priv->mutex);
1011
1012         if (!priv->hw_roc_setup)
1013                 return;
1014
1015         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1016         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1017
1018         priv->hw_roc_channel = NULL;
1019
1020         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1021
1022         iwlagn_commit_rxon(priv, ctx);
1023
1024         ctx->is_active = false;
1025         priv->hw_roc_setup = false;
1026 }
1027
1028 static void iwlagn_disable_roc_work(struct work_struct *work)
1029 {
1030         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1031                                              hw_roc_disable_work.work);
1032
1033         mutex_lock(&priv->mutex);
1034         iwlagn_disable_roc(priv);
1035         mutex_unlock(&priv->mutex);
1036 }
1037
1038 /*****************************************************************************
1039  *
1040  * driver setup and teardown
1041  *
1042  *****************************************************************************/
1043
1044 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1045 {
1046         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1047
1048         INIT_WORK(&priv->restart, iwl_bg_restart);
1049         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1050         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1051         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1052         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1053         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1054         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1055                           iwlagn_disable_roc_work);
1056
1057         iwl_setup_scan_deferred_work(priv);
1058
1059         if (priv->cfg->bt_params)
1060                 iwlagn_bt_setup_deferred_work(priv);
1061
1062         init_timer(&priv->statistics_periodic);
1063         priv->statistics_periodic.data = (unsigned long)priv;
1064         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1065
1066         init_timer(&priv->ucode_trace);
1067         priv->ucode_trace.data = (unsigned long)priv;
1068         priv->ucode_trace.function = iwl_bg_ucode_trace;
1069 }
1070
1071 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1072 {
1073         if (priv->cfg->bt_params)
1074                 iwlagn_bt_cancel_deferred_work(priv);
1075
1076         cancel_work_sync(&priv->run_time_calib_work);
1077         cancel_work_sync(&priv->beacon_update);
1078
1079         iwl_cancel_scan_deferred_work(priv);
1080
1081         cancel_work_sync(&priv->bt_full_concurrency);
1082         cancel_work_sync(&priv->bt_runtime_config);
1083         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1084
1085         del_timer_sync(&priv->statistics_periodic);
1086         del_timer_sync(&priv->ucode_trace);
1087 }
1088
1089 static int iwl_init_drv(struct iwl_priv *priv)
1090 {
1091         spin_lock_init(&priv->sta_lock);
1092
1093         mutex_init(&priv->mutex);
1094
1095         INIT_LIST_HEAD(&priv->calib_results);
1096
1097         priv->band = IEEE80211_BAND_2GHZ;
1098
1099         priv->plcp_delta_threshold =
1100                 priv->cfg->base_params->plcp_delta_threshold;
1101
1102         priv->iw_mode = NL80211_IFTYPE_STATION;
1103         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1104         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1105         priv->agg_tids_count = 0;
1106
1107         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1108
1109         priv->rx_statistics_jiffies = jiffies;
1110
1111         /* Choose which receivers/antennas to use */
1112         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1113
1114         iwl_init_scan_params(priv);
1115
1116         /* init bt coex */
1117         if (priv->cfg->bt_params &&
1118             priv->cfg->bt_params->advanced_bt_coexist) {
1119                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1120                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1121                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1122                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1123                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1124                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1125         }
1126
1127         return 0;
1128 }
1129
1130 static void iwl_uninit_drv(struct iwl_priv *priv)
1131 {
1132         kfree(priv->scan_cmd);
1133         kfree(priv->beacon_cmd);
1134         kfree(rcu_dereference_raw(priv->noa_data));
1135         iwl_calib_free_results(priv);
1136 #ifdef CONFIG_IWLWIFI_DEBUGFS
1137         kfree(priv->wowlan_sram);
1138 #endif
1139 }
1140
1141 static void iwl_set_hw_params(struct iwl_priv *priv)
1142 {
1143         if (priv->cfg->ht_params)
1144                 priv->hw_params.use_rts_for_aggregation =
1145                         priv->cfg->ht_params->use_rts_for_aggregation;
1146
1147         /* Device-specific setup */
1148         priv->lib->set_hw_params(priv);
1149 }
1150
1151
1152
1153 /* show what optional capabilities we have */
1154 static void iwl_option_config(struct iwl_priv *priv)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1158 #else
1159         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1160 #endif
1161
1162 #ifdef CONFIG_IWLWIFI_DEBUGFS
1163         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1164 #else
1165         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1166 #endif
1167
1168 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1169         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1170 #else
1171         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1172 #endif
1173
1174 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1175         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n");
1176 #else
1177         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n");
1178 #endif
1179
1180 #ifdef CONFIG_IWLWIFI_P2P
1181         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1182 #else
1183         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1184 #endif
1185 }
1186
1187 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1188 {
1189         u16 radio_cfg;
1190
1191         priv->eeprom_data->sku = priv->eeprom_data->sku;
1192
1193         if (priv->eeprom_data->sku & EEPROM_SKU_CAP_11N_ENABLE &&
1194             !priv->cfg->ht_params) {
1195                 IWL_ERR(priv, "Invalid 11n configuration\n");
1196                 return -EINVAL;
1197         }
1198
1199         if (!priv->eeprom_data->sku) {
1200                 IWL_ERR(priv, "Invalid device sku\n");
1201                 return -EINVAL;
1202         }
1203
1204         IWL_INFO(priv, "Device SKU: 0x%X\n", priv->eeprom_data->sku);
1205
1206         radio_cfg = priv->eeprom_data->radio_cfg;
1207
1208         priv->hw_params.tx_chains_num =
1209                 num_of_ant(priv->eeprom_data->valid_tx_ant);
1210         if (priv->cfg->rx_with_siso_diversity)
1211                 priv->hw_params.rx_chains_num = 1;
1212         else
1213                 priv->hw_params.rx_chains_num =
1214                         num_of_ant(priv->eeprom_data->valid_rx_ant);
1215
1216         IWL_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1217                  priv->eeprom_data->valid_tx_ant,
1218                  priv->eeprom_data->valid_rx_ant);
1219
1220         return 0;
1221 }
1222
1223 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1224                                                  const struct iwl_cfg *cfg,
1225                                                  const struct iwl_fw *fw)
1226 {
1227         struct iwl_priv *priv;
1228         struct ieee80211_hw *hw;
1229         struct iwl_op_mode *op_mode;
1230         u16 num_mac;
1231         u32 ucode_flags;
1232         struct iwl_trans_config trans_cfg;
1233         static const u8 no_reclaim_cmds[] = {
1234                 REPLY_RX_PHY_CMD,
1235                 REPLY_RX_MPDU_CMD,
1236                 REPLY_COMPRESSED_BA,
1237                 STATISTICS_NOTIFICATION,
1238                 REPLY_TX,
1239         };
1240         int i;
1241
1242         /************************
1243          * 1. Allocating HW data
1244          ************************/
1245         hw = iwl_alloc_all();
1246         if (!hw) {
1247                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1248                 goto out;
1249         }
1250
1251         op_mode = hw->priv;
1252         op_mode->ops = &iwl_dvm_ops;
1253         priv = IWL_OP_MODE_GET_DVM(op_mode);
1254         priv->trans = trans;
1255         priv->dev = trans->dev;
1256         priv->cfg = cfg;
1257         priv->fw = fw;
1258
1259         switch (priv->cfg->device_family) {
1260         case IWL_DEVICE_FAMILY_1000:
1261         case IWL_DEVICE_FAMILY_100:
1262                 priv->lib = &iwl1000_lib;
1263                 break;
1264         case IWL_DEVICE_FAMILY_2000:
1265         case IWL_DEVICE_FAMILY_105:
1266                 priv->lib = &iwl2000_lib;
1267                 break;
1268         case IWL_DEVICE_FAMILY_2030:
1269         case IWL_DEVICE_FAMILY_135:
1270                 priv->lib = &iwl2030_lib;
1271                 break;
1272         case IWL_DEVICE_FAMILY_5000:
1273                 priv->lib = &iwl5000_lib;
1274                 break;
1275         case IWL_DEVICE_FAMILY_5150:
1276                 priv->lib = &iwl5150_lib;
1277                 break;
1278         case IWL_DEVICE_FAMILY_6000:
1279         case IWL_DEVICE_FAMILY_6005:
1280         case IWL_DEVICE_FAMILY_6000i:
1281         case IWL_DEVICE_FAMILY_6050:
1282         case IWL_DEVICE_FAMILY_6150:
1283                 priv->lib = &iwl6000_lib;
1284                 break;
1285         case IWL_DEVICE_FAMILY_6030:
1286                 priv->lib = &iwl6030_lib;
1287                 break;
1288         default:
1289                 break;
1290         }
1291
1292         if (WARN_ON(!priv->lib))
1293                 goto out_free_hw;
1294
1295         /*
1296          * Populate the state variables that the transport layer needs
1297          * to know about.
1298          */
1299         trans_cfg.op_mode = op_mode;
1300         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1301         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1302         trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1303         if (!iwlwifi_mod_params.wd_disable)
1304                 trans_cfg.queue_watchdog_timeout =
1305                         priv->cfg->base_params->wd_timeout;
1306         else
1307                 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1308         trans_cfg.command_names = iwl_dvm_cmd_strings;
1309         trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1310
1311         WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1312                 priv->cfg->base_params->num_of_queues);
1313
1314         ucode_flags = fw->ucode_capa.flags;
1315
1316 #ifndef CONFIG_IWLWIFI_P2P
1317         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1318 #endif
1319
1320         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1321                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1322                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1323         } else {
1324                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1325                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1326         }
1327
1328         /* Configure transport layer */
1329         iwl_trans_configure(priv->trans, &trans_cfg);
1330
1331         /* At this point both hw and priv are allocated. */
1332
1333         SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1334
1335         iwl_option_config(priv);
1336
1337         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1338
1339         /* is antenna coupling more than 35dB ? */
1340         priv->bt_ant_couple_ok =
1341                 (iwlwifi_mod_params.ant_coupling >
1342                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1343                         true : false;
1344
1345         /* enable/disable bt channel inhibition */
1346         priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1347         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1348                        (priv->bt_ch_announce) ? "On" : "Off");
1349
1350         /* these spin locks will be used in apm_ops.init and EEPROM access
1351          * we should init now
1352          */
1353         spin_lock_init(&priv->statistics.lock);
1354
1355         /***********************
1356          * 2. Read REV register
1357          ***********************/
1358         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1359                 priv->cfg->name, priv->trans->hw_rev);
1360
1361         if (iwl_trans_start_hw(priv->trans))
1362                 goto out_free_hw;
1363
1364         /* Read the EEPROM */
1365         if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1366                             &priv->eeprom_blob_size)) {
1367                 IWL_ERR(priv, "Unable to init EEPROM\n");
1368                 goto out_free_hw;
1369         }
1370
1371         /* Reset chip to save power until we load uCode during "up". */
1372         iwl_trans_stop_hw(priv->trans, false);
1373
1374         priv->eeprom_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1375                                                   priv->eeprom_blob,
1376                                                   priv->eeprom_blob_size);
1377         if (!priv->eeprom_data)
1378                 goto out_free_eeprom_blob;
1379
1380         if (iwl_eeprom_check_version(priv->eeprom_data, priv->trans))
1381                 goto out_free_eeprom;
1382
1383         if (iwl_eeprom_init_hw_params(priv))
1384                 goto out_free_eeprom;
1385
1386         /* extract MAC Address */
1387         memcpy(priv->addresses[0].addr, priv->eeprom_data->hw_addr, ETH_ALEN);
1388         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1389         priv->hw->wiphy->addresses = priv->addresses;
1390         priv->hw->wiphy->n_addresses = 1;
1391         num_mac = priv->eeprom_data->n_hw_addrs;
1392         if (num_mac > 1) {
1393                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1394                        ETH_ALEN);
1395                 priv->addresses[1].addr[5]++;
1396                 priv->hw->wiphy->n_addresses++;
1397         }
1398
1399         /************************
1400          * 4. Setup HW constants
1401          ************************/
1402         iwl_set_hw_params(priv);
1403
1404         if (!(priv->eeprom_data->sku & EEPROM_SKU_CAP_IPAN_ENABLE)) {
1405                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1406                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1407                 /*
1408                  * if not PAN, then don't support P2P -- might be a uCode
1409                  * packaging bug or due to the eeprom check above
1410                  */
1411                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1412                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1413                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1414
1415                 /* Configure transport layer again*/
1416                 iwl_trans_configure(priv->trans, &trans_cfg);
1417         }
1418
1419         /*******************
1420          * 5. Setup priv
1421          *******************/
1422         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1423                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1424                 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1425                     i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1426                     i != IWL_IPAN_CMD_QUEUE_NUM)
1427                         priv->queue_to_mac80211[i] = i;
1428                 atomic_set(&priv->queue_stop_count[i], 0);
1429         }
1430
1431         if (iwl_init_drv(priv))
1432                 goto out_free_eeprom;
1433
1434         /* At this point both hw and priv are initialized. */
1435
1436         /********************
1437          * 6. Setup services
1438          ********************/
1439         iwl_setup_deferred_work(priv);
1440         iwl_setup_rx_handlers(priv);
1441         iwl_testmode_init(priv);
1442
1443         iwl_power_initialize(priv);
1444         iwl_tt_initialize(priv);
1445
1446         snprintf(priv->hw->wiphy->fw_version,
1447                  sizeof(priv->hw->wiphy->fw_version),
1448                  "%s", fw->fw_version);
1449
1450         priv->new_scan_threshold_behaviour =
1451                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1452
1453         priv->phy_calib_chain_noise_reset_cmd =
1454                 fw->ucode_capa.standard_phy_calibration_size;
1455         priv->phy_calib_chain_noise_gain_cmd =
1456                 fw->ucode_capa.standard_phy_calibration_size + 1;
1457
1458         /* initialize all valid contexts */
1459         iwl_init_context(priv, ucode_flags);
1460
1461         /**************************************************
1462          * This is still part of probe() in a sense...
1463          *
1464          * 7. Setup and register with mac80211 and debugfs
1465          **************************************************/
1466         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1467                 goto out_destroy_workqueue;
1468
1469         if (iwl_dbgfs_register(priv, DRV_NAME))
1470                 IWL_ERR(priv,
1471                         "failed to create debugfs files. Ignoring error\n");
1472
1473         return op_mode;
1474
1475 out_destroy_workqueue:
1476         destroy_workqueue(priv->workqueue);
1477         priv->workqueue = NULL;
1478         iwl_uninit_drv(priv);
1479 out_free_eeprom_blob:
1480         kfree(priv->eeprom_blob);
1481 out_free_eeprom:
1482         iwl_free_eeprom_data(priv->eeprom_data);
1483 out_free_hw:
1484         ieee80211_free_hw(priv->hw);
1485 out:
1486         op_mode = NULL;
1487         return op_mode;
1488 }
1489
1490 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1491 {
1492         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1493
1494         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1495
1496         iwl_dbgfs_unregister(priv);
1497
1498         iwl_testmode_free(priv);
1499         iwlagn_mac_unregister(priv);
1500
1501         iwl_tt_exit(priv);
1502
1503         /*This will stop the queues, move the device to low power state */
1504         priv->ucode_loaded = false;
1505         iwl_trans_stop_device(priv->trans);
1506
1507         kfree(priv->eeprom_blob);
1508         iwl_free_eeprom_data(priv->eeprom_data);
1509
1510         /*netif_stop_queue(dev); */
1511         flush_workqueue(priv->workqueue);
1512
1513         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1514          * priv->workqueue... so we can't take down the workqueue
1515          * until now... */
1516         destroy_workqueue(priv->workqueue);
1517         priv->workqueue = NULL;
1518
1519         iwl_uninit_drv(priv);
1520
1521         dev_kfree_skb(priv->beacon_skb);
1522
1523         iwl_trans_stop_hw(priv->trans, true);
1524         ieee80211_free_hw(priv->hw);
1525 }
1526
1527 static const char * const desc_lookup_text[] = {
1528         "OK",
1529         "FAIL",
1530         "BAD_PARAM",
1531         "BAD_CHECKSUM",
1532         "NMI_INTERRUPT_WDG",
1533         "SYSASSERT",
1534         "FATAL_ERROR",
1535         "BAD_COMMAND",
1536         "HW_ERROR_TUNE_LOCK",
1537         "HW_ERROR_TEMPERATURE",
1538         "ILLEGAL_CHAN_FREQ",
1539         "VCC_NOT_STABLE",
1540         "FH_ERROR",
1541         "NMI_INTERRUPT_HOST",
1542         "NMI_INTERRUPT_ACTION_PT",
1543         "NMI_INTERRUPT_UNKNOWN",
1544         "UCODE_VERSION_MISMATCH",
1545         "HW_ERROR_ABS_LOCK",
1546         "HW_ERROR_CAL_LOCK_FAIL",
1547         "NMI_INTERRUPT_INST_ACTION_PT",
1548         "NMI_INTERRUPT_DATA_ACTION_PT",
1549         "NMI_TRM_HW_ER",
1550         "NMI_INTERRUPT_TRM",
1551         "NMI_INTERRUPT_BREAK_POINT",
1552         "DEBUG_0",
1553         "DEBUG_1",
1554         "DEBUG_2",
1555         "DEBUG_3",
1556 };
1557
1558 static struct { char *name; u8 num; } advanced_lookup[] = {
1559         { "NMI_INTERRUPT_WDG", 0x34 },
1560         { "SYSASSERT", 0x35 },
1561         { "UCODE_VERSION_MISMATCH", 0x37 },
1562         { "BAD_COMMAND", 0x38 },
1563         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1564         { "FATAL_ERROR", 0x3D },
1565         { "NMI_TRM_HW_ERR", 0x46 },
1566         { "NMI_INTERRUPT_TRM", 0x4C },
1567         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1568         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1569         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1570         { "NMI_INTERRUPT_HOST", 0x66 },
1571         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1572         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1573         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1574         { "ADVANCED_SYSASSERT", 0 },
1575 };
1576
1577 static const char *desc_lookup(u32 num)
1578 {
1579         int i;
1580         int max = ARRAY_SIZE(desc_lookup_text);
1581
1582         if (num < max)
1583                 return desc_lookup_text[num];
1584
1585         max = ARRAY_SIZE(advanced_lookup) - 1;
1586         for (i = 0; i < max; i++) {
1587                 if (advanced_lookup[i].num == num)
1588                         break;
1589         }
1590         return advanced_lookup[i].name;
1591 }
1592
1593 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1594 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1595
1596 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1597 {
1598         struct iwl_trans *trans = priv->trans;
1599         u32 base;
1600         struct iwl_error_event_table table;
1601
1602         base = priv->device_pointers.error_event_table;
1603         if (priv->cur_ucode == IWL_UCODE_INIT) {
1604                 if (!base)
1605                         base = priv->fw->init_errlog_ptr;
1606         } else {
1607                 if (!base)
1608                         base = priv->fw->inst_errlog_ptr;
1609         }
1610
1611         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1612                 IWL_ERR(priv,
1613                         "Not valid error log pointer 0x%08X for %s uCode\n",
1614                         base,
1615                         (priv->cur_ucode == IWL_UCODE_INIT)
1616                                         ? "Init" : "RT");
1617                 return;
1618         }
1619
1620         /*TODO: Update dbgfs with ISR error stats obtained below */
1621         iwl_read_targ_mem_bytes(trans, base, &table, sizeof(table));
1622
1623         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1624                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1625                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1626                         priv->status, table.valid);
1627         }
1628
1629         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1630                                       table.data1, table.data2, table.line,
1631                                       table.blink1, table.blink2, table.ilink1,
1632                                       table.ilink2, table.bcon_time, table.gp1,
1633                                       table.gp2, table.gp3, table.ucode_ver,
1634                                       table.hw_ver, table.brd_ver);
1635         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1636                 desc_lookup(table.error_id));
1637         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1638         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1639         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1640         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1641         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1642         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1643         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1644         IWL_ERR(priv, "0x%08X | line\n", table.line);
1645         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1646         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1647         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1648         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1649         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1650         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1651         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1652         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1653         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1654         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1655         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1656         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1657         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1658         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1659         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1660         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1661         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1662         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1663         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1664         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1665         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1666         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1667         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1668         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1669 }
1670
1671 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1672
1673 /**
1674  * iwl_print_event_log - Dump error event log to syslog
1675  *
1676  */
1677 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1678                                u32 num_events, u32 mode,
1679                                int pos, char **buf, size_t bufsz)
1680 {
1681         u32 i;
1682         u32 base;       /* SRAM byte address of event log header */
1683         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1684         u32 ptr;        /* SRAM byte address of log data */
1685         u32 ev, time, data; /* event log data */
1686         unsigned long reg_flags;
1687
1688         struct iwl_trans *trans = priv->trans;
1689
1690         if (num_events == 0)
1691                 return pos;
1692
1693         base = priv->device_pointers.log_event_table;
1694         if (priv->cur_ucode == IWL_UCODE_INIT) {
1695                 if (!base)
1696                         base = priv->fw->init_evtlog_ptr;
1697         } else {
1698                 if (!base)
1699                         base = priv->fw->inst_evtlog_ptr;
1700         }
1701
1702         if (mode == 0)
1703                 event_size = 2 * sizeof(u32);
1704         else
1705                 event_size = 3 * sizeof(u32);
1706
1707         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1708
1709         /* Make sure device is powered up for SRAM reads */
1710         spin_lock_irqsave(&trans->reg_lock, reg_flags);
1711         if (unlikely(!iwl_grab_nic_access(trans)))
1712                 goto out_unlock;
1713
1714         /* Set starting address; reads will auto-increment */
1715         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1716
1717         /* "time" is actually "data" for mode 0 (no timestamp).
1718         * place event id # at far right for easier visual parsing. */
1719         for (i = 0; i < num_events; i++) {
1720                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1721                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1722                 if (mode == 0) {
1723                         /* data, ev */
1724                         if (bufsz) {
1725                                 pos += scnprintf(*buf + pos, bufsz - pos,
1726                                                 "EVT_LOG:0x%08x:%04u\n",
1727                                                 time, ev);
1728                         } else {
1729                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1730                                         time, ev);
1731                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1732                                         time, ev);
1733                         }
1734                 } else {
1735                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1736                         if (bufsz) {
1737                                 pos += scnprintf(*buf + pos, bufsz - pos,
1738                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1739                                                  time, data, ev);
1740                         } else {
1741                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1742                                         time, data, ev);
1743                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1744                                         data, ev);
1745                         }
1746                 }
1747         }
1748
1749         /* Allow device to power down */
1750         iwl_release_nic_access(trans);
1751 out_unlock:
1752         spin_unlock_irqrestore(&trans->reg_lock, reg_flags);
1753         return pos;
1754 }
1755
1756 /**
1757  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1758  */
1759 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1760                                     u32 num_wraps, u32 next_entry,
1761                                     u32 size, u32 mode,
1762                                     int pos, char **buf, size_t bufsz)
1763 {
1764         /*
1765          * display the newest DEFAULT_LOG_ENTRIES entries
1766          * i.e the entries just before the next ont that uCode would fill.
1767          */
1768         if (num_wraps) {
1769                 if (next_entry < size) {
1770                         pos = iwl_print_event_log(priv,
1771                                                 capacity - (size - next_entry),
1772                                                 size - next_entry, mode,
1773                                                 pos, buf, bufsz);
1774                         pos = iwl_print_event_log(priv, 0,
1775                                                   next_entry, mode,
1776                                                   pos, buf, bufsz);
1777                 } else
1778                         pos = iwl_print_event_log(priv, next_entry - size,
1779                                                   size, mode, pos, buf, bufsz);
1780         } else {
1781                 if (next_entry < size) {
1782                         pos = iwl_print_event_log(priv, 0, next_entry,
1783                                                   mode, pos, buf, bufsz);
1784                 } else {
1785                         pos = iwl_print_event_log(priv, next_entry - size,
1786                                                   size, mode, pos, buf, bufsz);
1787                 }
1788         }
1789         return pos;
1790 }
1791
1792 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1793
1794 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1795                             char **buf, bool display)
1796 {
1797         u32 base;       /* SRAM byte address of event log header */
1798         u32 capacity;   /* event log capacity in # entries */
1799         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1800         u32 num_wraps;  /* # times uCode wrapped to top of log */
1801         u32 next_entry; /* index of next entry to be written by uCode */
1802         u32 size;       /* # entries that we'll print */
1803         u32 logsize;
1804         int pos = 0;
1805         size_t bufsz = 0;
1806         struct iwl_trans *trans = priv->trans;
1807
1808         base = priv->device_pointers.log_event_table;
1809         if (priv->cur_ucode == IWL_UCODE_INIT) {
1810                 logsize = priv->fw->init_evtlog_size;
1811                 if (!base)
1812                         base = priv->fw->init_evtlog_ptr;
1813         } else {
1814                 logsize = priv->fw->inst_evtlog_size;
1815                 if (!base)
1816                         base = priv->fw->inst_evtlog_ptr;
1817         }
1818
1819         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1820                 IWL_ERR(priv,
1821                         "Invalid event log pointer 0x%08X for %s uCode\n",
1822                         base,
1823                         (priv->cur_ucode == IWL_UCODE_INIT)
1824                                         ? "Init" : "RT");
1825                 return -EINVAL;
1826         }
1827
1828         /* event log header */
1829         capacity = iwl_read_targ_mem(trans, base);
1830         mode = iwl_read_targ_mem(trans, base + (1 * sizeof(u32)));
1831         num_wraps = iwl_read_targ_mem(trans, base + (2 * sizeof(u32)));
1832         next_entry = iwl_read_targ_mem(trans, base + (3 * sizeof(u32)));
1833
1834         if (capacity > logsize) {
1835                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1836                         "entries\n", capacity, logsize);
1837                 capacity = logsize;
1838         }
1839
1840         if (next_entry > logsize) {
1841                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1842                         next_entry, logsize);
1843                 next_entry = logsize;
1844         }
1845
1846         size = num_wraps ? capacity : next_entry;
1847
1848         /* bail out if nothing in log */
1849         if (size == 0) {
1850                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1851                 return pos;
1852         }
1853
1854 #ifdef CONFIG_IWLWIFI_DEBUG
1855         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1856                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1857                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1858 #else
1859         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1860                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1861 #endif
1862         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1863                 size);
1864
1865 #ifdef CONFIG_IWLWIFI_DEBUG
1866         if (display) {
1867                 if (full_log)
1868                         bufsz = capacity * 48;
1869                 else
1870                         bufsz = size * 48;
1871                 *buf = kmalloc(bufsz, GFP_KERNEL);
1872                 if (!*buf)
1873                         return -ENOMEM;
1874         }
1875         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1876                 /*
1877                  * if uCode has wrapped back to top of log,
1878                  * start at the oldest entry,
1879                  * i.e the next one that uCode would fill.
1880                  */
1881                 if (num_wraps)
1882                         pos = iwl_print_event_log(priv, next_entry,
1883                                                 capacity - next_entry, mode,
1884                                                 pos, buf, bufsz);
1885                 /* (then/else) start at top of log */
1886                 pos = iwl_print_event_log(priv, 0,
1887                                           next_entry, mode, pos, buf, bufsz);
1888         } else
1889                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1890                                                 next_entry, size, mode,
1891                                                 pos, buf, bufsz);
1892 #else
1893         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1894                                         next_entry, size, mode,
1895                                         pos, buf, bufsz);
1896 #endif
1897         return pos;
1898 }
1899
1900 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1901 {
1902         unsigned int reload_msec;
1903         unsigned long reload_jiffies;
1904
1905 #ifdef CONFIG_IWLWIFI_DEBUG
1906         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1907                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1908 #endif
1909
1910         /* uCode is no longer loaded. */
1911         priv->ucode_loaded = false;
1912
1913         /* Set the FW error flag -- cleared on iwl_down */
1914         set_bit(STATUS_FW_ERROR, &priv->status);
1915
1916         iwl_abort_notification_waits(&priv->notif_wait);
1917
1918         /* Keep the restart process from trying to send host
1919          * commands by clearing the ready bit */
1920         clear_bit(STATUS_READY, &priv->status);
1921
1922         wake_up(&priv->trans->wait_command_queue);
1923
1924         if (!ondemand) {
1925                 /*
1926                  * If firmware keep reloading, then it indicate something
1927                  * serious wrong and firmware having problem to recover
1928                  * from it. Instead of keep trying which will fill the syslog
1929                  * and hang the system, let's just stop it
1930                  */
1931                 reload_jiffies = jiffies;
1932                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1933                                         (long) priv->reload_jiffies);
1934                 priv->reload_jiffies = reload_jiffies;
1935                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1936                         priv->reload_count++;
1937                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1938                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1939                                 return;
1940                         }
1941                 } else
1942                         priv->reload_count = 0;
1943         }
1944
1945         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1946                 if (iwlwifi_mod_params.restart_fw) {
1947                         IWL_DEBUG_FW_ERRORS(priv,
1948                                   "Restarting adapter due to uCode error.\n");
1949                         queue_work(priv->workqueue, &priv->restart);
1950                 } else
1951                         IWL_DEBUG_FW_ERRORS(priv,
1952                                   "Detected FW error, but not restarting\n");
1953         }
1954 }
1955
1956 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1957 {
1958         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1959
1960         IWL_ERR(priv, "Loaded firmware version: %s\n",
1961                 priv->fw->fw_version);
1962
1963         iwl_dump_nic_error_log(priv);
1964         iwl_dump_nic_event_log(priv, false, NULL, false);
1965
1966         iwlagn_fw_error(priv, false);
1967 }
1968
1969 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1970 {
1971         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1972
1973         if (!iwl_check_for_ct_kill(priv)) {
1974                 IWL_ERR(priv, "Restarting adapter queue is full\n");
1975                 iwlagn_fw_error(priv, false);
1976         }
1977 }
1978
1979 #define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1980
1981 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1982 {
1983         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1984         u16 radio_cfg = priv->eeprom_data->radio_cfg;
1985
1986         /* SKU Control */
1987         iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1988                           CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1989                           CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1990                           (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1991                                 CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1992                           (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1993                                 CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1994
1995         /* write radio config values to register */
1996         if (EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <= EEPROM_RF_CONFIG_TYPE_MAX) {
1997                 u32 reg_val =
1998                         EEPROM_RF_CFG_TYPE_MSK(radio_cfg) <<
1999                                 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2000                         EEPROM_RF_CFG_STEP_MSK(radio_cfg) <<
2001                                 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2002                         EEPROM_RF_CFG_DASH_MSK(radio_cfg) <<
2003                                 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2004
2005                 iwl_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2006                                   CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2007                                   CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2008                                   CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH, reg_val);
2009
2010                 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2011                          EEPROM_RF_CFG_TYPE_MSK(radio_cfg),
2012                          EEPROM_RF_CFG_STEP_MSK(radio_cfg),
2013                          EEPROM_RF_CFG_DASH_MSK(radio_cfg));
2014         } else {
2015                 WARN_ON(1);
2016         }
2017
2018         /* set CSR_HW_CONFIG_REG for uCode use */
2019         iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2020                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2021                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2022
2023         /* W/A : NIC is stuck in a reset state after Early PCIe power off
2024          * (PCIe power is lost before PERST# is asserted),
2025          * causing ME FW to lose ownership and not being able to obtain it back.
2026          */
2027         iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2028                                APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2029                                ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2030
2031         if (priv->lib->nic_config)
2032                 priv->lib->nic_config(priv);
2033 }
2034
2035 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2036 {
2037         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2038
2039         clear_bit(STATUS_READY, &priv->status);
2040         IWL_ERR(priv, "RF is used by WiMAX\n");
2041 }
2042
2043 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2044 {
2045         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2046         int mq = priv->queue_to_mac80211[queue];
2047
2048         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2049                 return;
2050
2051         if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2052                 IWL_DEBUG_TX_QUEUES(priv,
2053                         "queue %d (mac80211 %d) already stopped\n",
2054                         queue, mq);
2055                 return;
2056         }
2057
2058         set_bit(mq, &priv->transport_queue_stop);
2059         ieee80211_stop_queue(priv->hw, mq);
2060 }
2061
2062 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2063 {
2064         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2065         int mq = priv->queue_to_mac80211[queue];
2066
2067         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2068                 return;
2069
2070         if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2071                 IWL_DEBUG_TX_QUEUES(priv,
2072                         "queue %d (mac80211 %d) already awake\n",
2073                         queue, mq);
2074                 return;
2075         }
2076
2077         clear_bit(mq, &priv->transport_queue_stop);
2078
2079         if (!priv->passive_no_rx)
2080                 ieee80211_wake_queue(priv->hw, mq);
2081 }
2082
2083 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2084 {
2085         int mq;
2086
2087         if (!priv->passive_no_rx)
2088                 return;
2089
2090         for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2091                 if (!test_bit(mq, &priv->transport_queue_stop)) {
2092                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2093                         ieee80211_wake_queue(priv->hw, mq);
2094                 } else {
2095                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2096                 }
2097         }
2098
2099         priv->passive_no_rx = false;
2100 }
2101
2102 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2103 {
2104         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2105         struct ieee80211_tx_info *info;
2106
2107         info = IEEE80211_SKB_CB(skb);
2108         iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2109         dev_kfree_skb_any(skb);
2110 }
2111
2112 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2113 {
2114         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2115
2116         if (state)
2117                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2118         else
2119                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2120
2121         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2122 }
2123
2124 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2125         .start = iwl_op_mode_dvm_start,
2126         .stop = iwl_op_mode_dvm_stop,
2127         .rx = iwl_rx_dispatch,
2128         .queue_full = iwl_stop_sw_queue,
2129         .queue_not_full = iwl_wake_sw_queue,
2130         .hw_rf_kill = iwl_set_hw_rfkill_state,
2131         .free_skb = iwl_free_skb,
2132         .nic_error = iwl_nic_error,
2133         .cmd_queue_full = iwl_cmd_queue_full,
2134         .nic_config = iwl_nic_config,
2135         .wimax_active = iwl_wimax_active,
2136 };
2137
2138 /*****************************************************************************
2139  *
2140  * driver and module entry point
2141  *
2142  *****************************************************************************/
2143 static int __init iwl_init(void)
2144 {
2145
2146         int ret;
2147         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
2148         pr_info(DRV_COPYRIGHT "\n");
2149
2150         ret = iwlagn_rate_control_register();
2151         if (ret) {
2152                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2153                 return ret;
2154         }
2155
2156         ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2157         if (ret) {
2158                 pr_err("Unable to register op_mode: %d\n", ret);
2159                 iwlagn_rate_control_unregister();
2160         }
2161
2162         return ret;
2163 }
2164 module_init(iwl_init);
2165
2166 static void __exit iwl_exit(void)
2167 {
2168         iwl_opmode_deregister("iwldvm");
2169         iwlagn_rate_control_unregister();
2170 }
2171 module_exit(iwl_exit);