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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2013 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->nvm_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         mutex_lock(&priv->mutex);
 256         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 257                 goto out;
 258
 259         /* dont send host command if rf-kill is on */
 260         if (!iwl_is_ready_rf(priv))
 261                 goto out;
 262
 263         iwlagn_send_advance_bt_config(priv);
 264 out:
 265         mutex_unlock(&priv->mutex);
 266 }
 267
 268 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 269 {
 270         struct iwl_priv *priv =
 271                 container_of(work, struct iwl_priv, bt_full_concurrency);
 272         struct iwl_rxon_context *ctx;
 273
 274         mutex_lock(&priv->mutex);
 275
 276         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 277                 goto out;
 278
 279         /* dont send host command if rf-kill is on */
 280         if (!iwl_is_ready_rf(priv))
 281                 goto out;
 282
 283         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 284                        priv->bt_full_concurrent ?
 285                        "full concurrency" : "3-wire");
 286
 287         /*
 288          * LQ & RXON updated cmds must be sent before BT Config cmd
 289          * to avoid 3-wire collisions
 290          */
 291         for_each_context(priv, ctx) {
 292                 iwlagn_set_rxon_chain(priv, ctx);
 293                 iwlagn_commit_rxon(priv, ctx);
 294         }
 295
 296         iwlagn_send_advance_bt_config(priv);
 297 out:
 298         mutex_unlock(&priv->mutex);
 299 }
 300
 301 int iwl_send_statistics_request(struct iwl_priv *priv, u8 flags, bool clear)
 302 {
 303         struct iwl_statistics_cmd statistics_cmd = {
 304                 .configuration_flags =
 305                         clear ? IWL_STATS_CONF_CLEAR_STATS : 0,
 306         };
 307
 308         if (flags & CMD_ASYNC)
 309                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 310                                         CMD_ASYNC,
 311                                         sizeof(struct iwl_statistics_cmd),
 312                                         &statistics_cmd);
 313         else
 314                 return iwl_dvm_send_cmd_pdu(priv, REPLY_STATISTICS_CMD,
 315                                         CMD_SYNC,
 316                                         sizeof(struct iwl_statistics_cmd),
 317                                         &statistics_cmd);
 318 }
 319
 320 /**
 321  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 322  *
 323  * This callback is provided in order to send a statistics request.
 324  *
 325  * This timer function is continually reset to execute within
 326  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 327  * was received.  We need to ensure we receive the statistics in order
 328  * to update the temperature used for calibrating the TXPOWER.
 329  */
 330 static void iwl_bg_statistics_periodic(unsigned long data)
 331 {
 332         struct iwl_priv *priv = (struct iwl_priv *)data;
 333
 334         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 335                 return;
 336
 337         /* dont send host command if rf-kill is on */
 338         if (!iwl_is_ready_rf(priv))
 339                 return;
 340
 341         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 342 }
 343
 344
 345 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 346                                         u32 start_idx, u32 num_events,
 347                                         u32 capacity, u32 mode)
 348 {
 349         u32 i;
 350         u32 ptr;        /* SRAM byte address of log data */
 351         u32 ev, time, data; /* event log data */
 352         unsigned long reg_flags;
 353
 354         if (mode == 0)
 355                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 356         else
 357                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 358
 359         /* Make sure device is powered up for SRAM reads */
 360         if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
 361                 return;
 362
 363         /* Set starting address; reads will auto-increment */
 364         iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 365
 366         /*
 367          * Refuse to read more than would have fit into the log from
 368          * the current start_idx. This used to happen due to the race
 369          * described below, but now WARN because the code below should
 370          * prevent it from happening here.
 371          */
 372         if (WARN_ON(num_events > capacity - start_idx))
 373                 num_events = capacity - start_idx;
 374
 375         /*
 376          * "time" is actually "data" for mode 0 (no timestamp).
 377          * place event id # at far right for easier visual parsing.
 378          */
 379         for (i = 0; i < num_events; i++) {
 380                 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 381                 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 382                 if (mode == 0) {
 383                         trace_iwlwifi_dev_ucode_cont_event(
 384                                         priv->trans->dev, 0, time, ev);
 385                 } else {
 386                         data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 387                         trace_iwlwifi_dev_ucode_cont_event(
 388                                         priv->trans->dev, time, data, ev);
 389                 }
 390         }
 391         /* Allow device to power down */
 392         iwl_trans_release_nic_access(priv->trans, &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_trans_read_mem_bytes(priv->trans, base,
 412                                          &read, sizeof(read));
 413                 capacity = read.capacity;
 414                 mode = read.mode;
 415                 num_wraps = read.wrap_counter;
 416                 next_entry = read.write_counter;
 417         } else
 418                 return;
 419
 420         /*
 421          * Unfortunately, the uCode doesn't use temporary variables.
 422          * Therefore, it can happen that we read next_entry == capacity,
 423          * which really means next_entry == 0.
 424          */
 425         if (unlikely(next_entry == capacity))
 426                 next_entry = 0;
 427         /*
 428          * Additionally, the uCode increases the write pointer before
 429          * the wraps counter, so if the write pointer is smaller than
 430          * the old write pointer (wrap occurred) but we read that no
 431          * wrap occurred, we actually read between the next_entry and
 432          * num_wraps update (this does happen in practice!!) -- take
 433          * that into account by increasing num_wraps.
 434          */
 435         if (unlikely(next_entry < priv->event_log.next_entry &&
 436                      num_wraps == priv->event_log.num_wraps))
 437                 num_wraps++;
 438
 439         if (num_wraps == priv->event_log.num_wraps) {
 440                 iwl_print_cont_event_trace(
 441                         priv, base, priv->event_log.next_entry,
 442                         next_entry - priv->event_log.next_entry,
 443                         capacity, mode);
 444
 445                 priv->event_log.non_wraps_count++;
 446         } else {
 447                 if (num_wraps - priv->event_log.num_wraps > 1)
 448                         priv->event_log.wraps_more_count++;
 449                 else
 450                         priv->event_log.wraps_once_count++;
 451
 452                 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 453                                 num_wraps - priv->event_log.num_wraps,
 454                                 next_entry, priv->event_log.next_entry);
 455
 456                 if (next_entry < priv->event_log.next_entry) {
 457                         iwl_print_cont_event_trace(
 458                                 priv, base, priv->event_log.next_entry,
 459                                 capacity - priv->event_log.next_entry,
 460                                 capacity, mode);
 461
 462                         iwl_print_cont_event_trace(
 463                                 priv, base, 0, next_entry, capacity, mode);
 464                 } else {
 465                         iwl_print_cont_event_trace(
 466                                 priv, base, next_entry,
 467                                 capacity - next_entry,
 468                                 capacity, mode);
 469
 470                         iwl_print_cont_event_trace(
 471                                 priv, base, 0, next_entry, capacity, mode);
 472                 }
 473         }
 474
 475         priv->event_log.num_wraps = num_wraps;
 476         priv->event_log.next_entry = next_entry;
 477 }
 478
 479 /**
 480  * iwl_bg_ucode_trace - Timer callback to log ucode event
 481  *
 482  * The timer is continually set to execute every
 483  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 484  * this function is to perform continuous uCode event logging operation
 485  * if enabled
 486  */
 487 static void iwl_bg_ucode_trace(unsigned long data)
 488 {
 489         struct iwl_priv *priv = (struct iwl_priv *)data;
 490
 491         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 492                 return;
 493
 494         if (priv->event_log.ucode_trace) {
 495                 iwl_continuous_event_trace(priv);
 496                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 497                 mod_timer(&priv->ucode_trace,
 498                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 499         }
 500 }
 501
 502 static void iwl_bg_tx_flush(struct work_struct *work)
 503 {
 504         struct iwl_priv *priv =
 505                 container_of(work, struct iwl_priv, tx_flush);
 506
 507         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 508                 return;
 509
 510         /* do nothing if rf-kill is on */
 511         if (!iwl_is_ready_rf(priv))
 512                 return;
 513
 514         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 515         iwlagn_dev_txfifo_flush(priv);
 516 }
 517
 518 /*
 519  * queue/FIFO/AC mapping definitions
 520  */
 521
 522 static const u8 iwlagn_bss_ac_to_fifo[] = {
 523         IWL_TX_FIFO_VO,
 524         IWL_TX_FIFO_VI,
 525         IWL_TX_FIFO_BE,
 526         IWL_TX_FIFO_BK,
 527 };
 528
 529 static const u8 iwlagn_bss_ac_to_queue[] = {
 530         0, 1, 2, 3,
 531 };
 532
 533 static const u8 iwlagn_pan_ac_to_fifo[] = {
 534         IWL_TX_FIFO_VO_IPAN,
 535         IWL_TX_FIFO_VI_IPAN,
 536         IWL_TX_FIFO_BE_IPAN,
 537         IWL_TX_FIFO_BK_IPAN,
 538 };
 539
 540 static const u8 iwlagn_pan_ac_to_queue[] = {
 541         7, 6, 5, 4,
 542 };
 543
 544 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 545 {
 546         int i;
 547
 548         /*
 549          * The default context is always valid,
 550          * the PAN context depends on uCode.
 551          */
 552         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 553         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 554                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 555
 556         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 557                 priv->contexts[i].ctxid = i;
 558
 559         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 560         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 561         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 562         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 563         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 564         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 565         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 566         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 567         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 568         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 569                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 570         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 571                 BIT(NL80211_IFTYPE_STATION);
 572         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 573         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 574         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 575         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 576         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 577                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 578         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 579                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 580
 581         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 582         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 583                 REPLY_WIPAN_RXON_TIMING;
 584         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 585                 REPLY_WIPAN_RXON_ASSOC;
 586         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 587         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 588         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 589         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 590         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 591         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 592                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 593
 594         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 595                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 596                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 597                         BIT(NL80211_IFTYPE_P2P_GO);
 598
 599         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 600         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 601         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 602         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 603                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 604         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 605                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 606         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 607
 608         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 609 }
 610
 611 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 612 {
 613         struct iwl_ct_kill_config cmd;
 614         struct iwl_ct_kill_throttling_config adv_cmd;
 615         int ret = 0;
 616
 617         iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 618                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 619
 620         priv->thermal_throttle.ct_kill_toggle = false;
 621
 622         if (priv->cfg->base_params->support_ct_kill_exit) {
 623                 adv_cmd.critical_temperature_enter =
 624                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 625                 adv_cmd.critical_temperature_exit =
 626                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 627
 628                 ret = iwl_dvm_send_cmd_pdu(priv,
 629                                        REPLY_CT_KILL_CONFIG_CMD,
 630                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 631                 if (ret)
 632                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 633                 else
 634                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 635                                 "succeeded, critical temperature enter is %d,"
 636                                 "exit is %d\n",
 637                                 priv->hw_params.ct_kill_threshold,
 638                                 priv->hw_params.ct_kill_exit_threshold);
 639         } else {
 640                 cmd.critical_temperature_R =
 641                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 642
 643                 ret = iwl_dvm_send_cmd_pdu(priv,
 644                                        REPLY_CT_KILL_CONFIG_CMD,
 645                                        CMD_SYNC, sizeof(cmd), &cmd);
 646                 if (ret)
 647                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 648                 else
 649                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 650                                 "succeeded, "
 651                                 "critical temperature is %d\n",
 652                                 priv->hw_params.ct_kill_threshold);
 653         }
 654 }
 655
 656 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 657 {
 658         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 659         struct iwl_host_cmd cmd = {
 660                 .id = CALIBRATION_CFG_CMD,
 661                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 662                 .data = { &calib_cfg_cmd, },
 663         };
 664
 665         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 666         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 667         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 668
 669         return iwl_dvm_send_cmd(priv, &cmd);
 670 }
 671
 672
 673 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 674 {
 675         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 676           .valid = cpu_to_le32(valid_tx_ant),
 677         };
 678
 679         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 680                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 681                 return iwl_dvm_send_cmd_pdu(priv,
 682                                         TX_ANT_CONFIGURATION_CMD,
 683                                         CMD_SYNC,
 684                                         sizeof(struct iwl_tx_ant_config_cmd),
 685                                         &tx_ant_cmd);
 686         } else {
 687                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 688                 return -EOPNOTSUPP;
 689         }
 690 }
 691
 692 static void iwl_send_bt_config(struct iwl_priv *priv)
 693 {
 694         struct iwl_bt_cmd bt_cmd = {
 695                 .lead_time = BT_LEAD_TIME_DEF,
 696                 .max_kill = BT_MAX_KILL_DEF,
 697                 .kill_ack_mask = 0,
 698                 .kill_cts_mask = 0,
 699         };
 700
 701         if (!iwlwifi_mod_params.bt_coex_active)
 702                 bt_cmd.flags = BT_COEX_DISABLE;
 703         else
 704                 bt_cmd.flags = BT_COEX_ENABLE;
 705
 706         priv->bt_enable_flag = bt_cmd.flags;
 707         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 708                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 709
 710         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 711                              CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
 712                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 713 }
 714
 715 /**
 716  * iwl_alive_start - called after REPLY_ALIVE notification received
 717  *                   from protocol/runtime uCode (initialization uCode's
 718  *                   Alive gets handled by iwl_init_alive_start()).
 719  */
 720 int iwl_alive_start(struct iwl_priv *priv)
 721 {
 722         int ret = 0;
 723         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 724
 725         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 726
 727         /* After the ALIVE response, we can send host commands to the uCode */
 728         set_bit(STATUS_ALIVE, &priv->status);
 729
 730         if (iwl_is_rfkill(priv))
 731                 return -ERFKILL;
 732
 733         if (priv->event_log.ucode_trace) {
 734                 /* start collecting data now */
 735                 mod_timer(&priv->ucode_trace, jiffies);
 736         }
 737
 738         /* download priority table before any calibration request */
 739         if (priv->cfg->bt_params &&
 740             priv->cfg->bt_params->advanced_bt_coexist) {
 741                 /* Configure Bluetooth device coexistence support */
 742                 if (priv->cfg->bt_params->bt_sco_disable)
 743                         priv->bt_enable_pspoll = false;
 744                 else
 745                         priv->bt_enable_pspoll = true;
 746
 747                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 748                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 749                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 750                 iwlagn_send_advance_bt_config(priv);
 751                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 752                 priv->cur_rssi_ctx = NULL;
 753
 754                 iwl_send_prio_tbl(priv);
 755
 756                 /* FIXME: w/a to force change uCode BT state machine */
 757                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 758                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 759                 if (ret)
 760                         return ret;
 761                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 762                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 763                 if (ret)
 764                         return ret;
 765         } else if (priv->cfg->bt_params) {
 766                 /*
 767                  * default is 2-wire BT coexexistence support
 768                  */
 769                 iwl_send_bt_config(priv);
 770         }
 771
 772         /*
 773          * Perform runtime calibrations, including DC calibration.
 774          */
 775         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 776
 777         ieee80211_wake_queues(priv->hw);
 778
 779         /* Configure Tx antenna selection based on H/W config */
 780         iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
 781
 782         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 783                 struct iwl_rxon_cmd *active_rxon =
 784                                 (struct iwl_rxon_cmd *)&ctx->active;
 785                 /* apply any changes in staging */
 786                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 787                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 788         } else {
 789                 struct iwl_rxon_context *tmp;
 790                 /* Initialize our rx_config data */
 791                 for_each_context(priv, tmp)
 792                         iwl_connection_init_rx_config(priv, tmp);
 793
 794                 iwlagn_set_rxon_chain(priv, ctx);
 795         }
 796
 797         if (!priv->wowlan) {
 798                 /* WoWLAN ucode will not reply in the same way, skip it */
 799                 iwl_reset_run_time_calib(priv);
 800         }
 801
 802         set_bit(STATUS_READY, &priv->status);
 803
 804         /* Configure the adapter for unassociated operation */
 805         ret = iwlagn_commit_rxon(priv, ctx);
 806         if (ret)
 807                 return ret;
 808
 809         /* At this point, the NIC is initialized and operational */
 810         iwl_rf_kill_ct_config(priv);
 811
 812         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 813
 814         return iwl_power_update_mode(priv, true);
 815 }
 816
 817 /**
 818  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 819  * @priv: iwl priv struct
 820  *
 821  * This is called during iwl_down() to make sure that in the case
 822  * we're coming there from a hardware restart mac80211 will be
 823  * able to reconfigure stations -- if we're getting there in the
 824  * normal down flow then the stations will already be cleared.
 825  */
 826 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 827 {
 828         struct iwl_rxon_context *ctx;
 829
 830         spin_lock_bh(&priv->sta_lock);
 831         memset(priv->stations, 0, sizeof(priv->stations));
 832         priv->num_stations = 0;
 833
 834         priv->ucode_key_table = 0;
 835
 836         for_each_context(priv, ctx) {
 837                 /*
 838                  * Remove all key information that is not stored as part
 839                  * of station information since mac80211 may not have had
 840                  * a chance to remove all the keys. When device is
 841                  * reconfigured by mac80211 after an error all keys will
 842                  * be reconfigured.
 843                  */
 844                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 845                 ctx->key_mapping_keys = 0;
 846         }
 847
 848         spin_unlock_bh(&priv->sta_lock);
 849 }
 850
 851 void iwl_down(struct iwl_priv *priv)
 852 {
 853         int exit_pending;
 854
 855         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 856
 857         lockdep_assert_held(&priv->mutex);
 858
 859         iwl_scan_cancel_timeout(priv, 200);
 860
 861         /*
 862          * If active, scanning won't cancel it, so say it expired.
 863          * No race since we hold the mutex here and a new one
 864          * can't come in at this time.
 865          */
 866         if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT)
 867                 ieee80211_remain_on_channel_expired(priv->hw);
 868
 869         exit_pending =
 870                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 871
 872         iwl_clear_ucode_stations(priv, NULL);
 873         iwl_dealloc_bcast_stations(priv);
 874         iwl_clear_driver_stations(priv);
 875
 876         /* reset BT coex data */
 877         priv->bt_status = 0;
 878         priv->cur_rssi_ctx = NULL;
 879         priv->bt_is_sco = 0;
 880         if (priv->cfg->bt_params)
 881                 priv->bt_traffic_load =
 882                          priv->cfg->bt_params->bt_init_traffic_load;
 883         else
 884                 priv->bt_traffic_load = 0;
 885         priv->bt_full_concurrent = false;
 886         priv->bt_ci_compliance = 0;
 887
 888         /* Wipe out the EXIT_PENDING status bit if we are not actually
 889          * exiting the module */
 890         if (!exit_pending)
 891                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 892
 893         if (priv->mac80211_registered)
 894                 ieee80211_stop_queues(priv->hw);
 895
 896         priv->ucode_loaded = false;
 897         iwl_trans_stop_device(priv->trans);
 898
 899         /* Set num_aux_in_flight must be done after the transport is stopped */
 900         atomic_set(&priv->num_aux_in_flight, 0);
 901
 902         /* Clear out all status bits but a few that are stable across reset */
 903         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 904                                 STATUS_RF_KILL_HW |
 905                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 906                                 STATUS_FW_ERROR |
 907                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 908                                 STATUS_EXIT_PENDING;
 909
 910         dev_kfree_skb(priv->beacon_skb);
 911         priv->beacon_skb = NULL;
 912 }
 913
 914 /*****************************************************************************
 915  *
 916  * Workqueue callbacks
 917  *
 918  *****************************************************************************/
 919
 920 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 921 {
 922         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 923                         run_time_calib_work);
 924
 925         mutex_lock(&priv->mutex);
 926
 927         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 928             test_bit(STATUS_SCANNING, &priv->status)) {
 929                 mutex_unlock(&priv->mutex);
 930                 return;
 931         }
 932
 933         if (priv->start_calib) {
 934                 iwl_chain_noise_calibration(priv);
 935                 iwl_sensitivity_calibration(priv);
 936         }
 937
 938         mutex_unlock(&priv->mutex);
 939 }
 940
 941 void iwlagn_prepare_restart(struct iwl_priv *priv)
 942 {
 943         bool bt_full_concurrent;
 944         u8 bt_ci_compliance;
 945         u8 bt_load;
 946         u8 bt_status;
 947         bool bt_is_sco;
 948         int i;
 949
 950         lockdep_assert_held(&priv->mutex);
 951
 952         priv->is_open = 0;
 953
 954         /*
 955          * __iwl_down() will clear the BT status variables,
 956          * which is correct, but when we restart we really
 957          * want to keep them so restore them afterwards.
 958          *
 959          * The restart process will later pick them up and
 960          * re-configure the hw when we reconfigure the BT
 961          * command.
 962          */
 963         bt_full_concurrent = priv->bt_full_concurrent;
 964         bt_ci_compliance = priv->bt_ci_compliance;
 965         bt_load = priv->bt_traffic_load;
 966         bt_status = priv->bt_status;
 967         bt_is_sco = priv->bt_is_sco;
 968
 969         iwl_down(priv);
 970
 971         priv->bt_full_concurrent = bt_full_concurrent;
 972         priv->bt_ci_compliance = bt_ci_compliance;
 973         priv->bt_traffic_load = bt_load;
 974         priv->bt_status = bt_status;
 975         priv->bt_is_sco = bt_is_sco;
 976
 977         /* reset aggregation queues */
 978         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
 979                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 980         /* and stop counts */
 981         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
 982                 atomic_set(&priv->queue_stop_count[i], 0);
 983
 984         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
 985 }
 986
 987 static void iwl_bg_restart(struct work_struct *data)
 988 {
 989         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
 990
 991         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 992                 return;
 993
 994         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
 995                 mutex_lock(&priv->mutex);
 996                 iwlagn_prepare_restart(priv);
 997                 mutex_unlock(&priv->mutex);
 998                 iwl_cancel_deferred_work(priv);
 999                 if (priv->mac80211_registered)
1000                         ieee80211_restart_hw(priv->hw);
1001                 else
1002                         IWL_ERR(priv,
1003                                 "Cannot request restart before registrating with mac80211");
1004         } else {
1005                 WARN_ON(1);
1006         }
1007 }
1008
1009
1010
1011
1012 void iwlagn_disable_roc(struct iwl_priv *priv)
1013 {
1014         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1015
1016         lockdep_assert_held(&priv->mutex);
1017
1018         if (!priv->hw_roc_setup)
1019                 return;
1020
1021         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1022         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1023
1024         priv->hw_roc_channel = NULL;
1025
1026         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1027
1028         iwlagn_commit_rxon(priv, ctx);
1029
1030         ctx->is_active = false;
1031         priv->hw_roc_setup = false;
1032 }
1033
1034 static void iwlagn_disable_roc_work(struct work_struct *work)
1035 {
1036         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1037                                              hw_roc_disable_work.work);
1038
1039         mutex_lock(&priv->mutex);
1040         iwlagn_disable_roc(priv);
1041         mutex_unlock(&priv->mutex);
1042 }
1043
1044 /*****************************************************************************
1045  *
1046  * driver setup and teardown
1047  *
1048  *****************************************************************************/
1049
1050 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1051 {
1052         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1053
1054         INIT_WORK(&priv->restart, iwl_bg_restart);
1055         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1056         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1057         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1058         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1059         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1060         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1061                           iwlagn_disable_roc_work);
1062
1063         iwl_setup_scan_deferred_work(priv);
1064
1065         if (priv->cfg->bt_params)
1066                 iwlagn_bt_setup_deferred_work(priv);
1067
1068         init_timer(&priv->statistics_periodic);
1069         priv->statistics_periodic.data = (unsigned long)priv;
1070         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1071
1072         init_timer(&priv->ucode_trace);
1073         priv->ucode_trace.data = (unsigned long)priv;
1074         priv->ucode_trace.function = iwl_bg_ucode_trace;
1075 }
1076
1077 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1078 {
1079         if (priv->cfg->bt_params)
1080                 iwlagn_bt_cancel_deferred_work(priv);
1081
1082         cancel_work_sync(&priv->run_time_calib_work);
1083         cancel_work_sync(&priv->beacon_update);
1084
1085         iwl_cancel_scan_deferred_work(priv);
1086
1087         cancel_work_sync(&priv->bt_full_concurrency);
1088         cancel_work_sync(&priv->bt_runtime_config);
1089         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1090
1091         del_timer_sync(&priv->statistics_periodic);
1092         del_timer_sync(&priv->ucode_trace);
1093 }
1094
1095 static int iwl_init_drv(struct iwl_priv *priv)
1096 {
1097         spin_lock_init(&priv->sta_lock);
1098
1099         mutex_init(&priv->mutex);
1100
1101         INIT_LIST_HEAD(&priv->calib_results);
1102
1103         priv->band = IEEE80211_BAND_2GHZ;
1104
1105         priv->plcp_delta_threshold =
1106                 priv->cfg->base_params->plcp_delta_threshold;
1107
1108         priv->iw_mode = NL80211_IFTYPE_STATION;
1109         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1110         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1111         priv->agg_tids_count = 0;
1112
1113         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1114
1115         priv->rx_statistics_jiffies = jiffies;
1116
1117         /* Choose which receivers/antennas to use */
1118         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1119
1120         iwl_init_scan_params(priv);
1121
1122         /* init bt coex */
1123         if (priv->cfg->bt_params &&
1124             priv->cfg->bt_params->advanced_bt_coexist) {
1125                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1126                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1127                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1128                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1129                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1130                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1131         }
1132
1133         return 0;
1134 }
1135
1136 static void iwl_uninit_drv(struct iwl_priv *priv)
1137 {
1138         kfree(priv->scan_cmd);
1139         kfree(priv->beacon_cmd);
1140         kfree(rcu_dereference_raw(priv->noa_data));
1141         iwl_calib_free_results(priv);
1142 #ifdef CONFIG_IWLWIFI_DEBUGFS
1143         kfree(priv->wowlan_sram);
1144 #endif
1145 }
1146
1147 static void iwl_set_hw_params(struct iwl_priv *priv)
1148 {
1149         if (priv->cfg->ht_params)
1150                 priv->hw_params.use_rts_for_aggregation =
1151                         priv->cfg->ht_params->use_rts_for_aggregation;
1152
1153         /* Device-specific setup */
1154         priv->lib->set_hw_params(priv);
1155 }
1156
1157
1158
1159 /* show what optional capabilities we have */
1160 static void iwl_option_config(struct iwl_priv *priv)
1161 {
1162 #ifdef CONFIG_IWLWIFI_DEBUG
1163         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1164 #else
1165         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1166 #endif
1167
1168 #ifdef CONFIG_IWLWIFI_DEBUGFS
1169         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1170 #else
1171         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1172 #endif
1173
1174 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1175         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1176 #else
1177         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1178 #endif
1179
1180 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1181         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n");
1182 #else
1183         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n");
1184 #endif
1185
1186 #ifdef CONFIG_IWLWIFI_P2P
1187         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1188 #else
1189         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1190 #endif
1191 }
1192
1193 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1194 {
1195         struct iwl_nvm_data *data = priv->nvm_data;
1196         char *debug_msg;
1197
1198         if (data->sku_cap_11n_enable &&
1199             !priv->cfg->ht_params) {
1200                 IWL_ERR(priv, "Invalid 11n configuration\n");
1201                 return -EINVAL;
1202         }
1203
1204         if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1205             !data->sku_cap_band_52GHz_enable) {
1206                 IWL_ERR(priv, "Invalid device sku\n");
1207                 return -EINVAL;
1208         }
1209
1210         debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
1211         IWL_DEBUG_INFO(priv, debug_msg,
1212                        data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1213                        data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1214                        data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1215
1216         priv->hw_params.tx_chains_num =
1217                 num_of_ant(data->valid_tx_ant);
1218         if (priv->cfg->rx_with_siso_diversity)
1219                 priv->hw_params.rx_chains_num = 1;
1220         else
1221                 priv->hw_params.rx_chains_num =
1222                         num_of_ant(data->valid_rx_ant);
1223
1224         IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1225                        data->valid_tx_ant,
1226                        data->valid_rx_ant);
1227
1228         return 0;
1229 }
1230
1231 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1232                                                  const struct iwl_cfg *cfg,
1233                                                  const struct iwl_fw *fw,
1234                                                  struct dentry *dbgfs_dir)
1235 {
1236         struct iwl_priv *priv;
1237         struct ieee80211_hw *hw;
1238         struct iwl_op_mode *op_mode;
1239         u16 num_mac;
1240         u32 ucode_flags;
1241         struct iwl_trans_config trans_cfg = {};
1242         static const u8 no_reclaim_cmds[] = {
1243                 REPLY_RX_PHY_CMD,
1244                 REPLY_RX_MPDU_CMD,
1245                 REPLY_COMPRESSED_BA,
1246                 STATISTICS_NOTIFICATION,
1247                 REPLY_TX,
1248         };
1249         int i;
1250
1251         /************************
1252          * 1. Allocating HW data
1253          ************************/
1254         hw = iwl_alloc_all();
1255         if (!hw) {
1256                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1257                 goto out;
1258         }
1259
1260         op_mode = hw->priv;
1261         op_mode->ops = &iwl_dvm_ops;
1262         priv = IWL_OP_MODE_GET_DVM(op_mode);
1263         priv->trans = trans;
1264         priv->dev = trans->dev;
1265         priv->cfg = cfg;
1266         priv->fw = fw;
1267
1268         switch (priv->cfg->device_family) {
1269         case IWL_DEVICE_FAMILY_1000:
1270         case IWL_DEVICE_FAMILY_100:
1271                 priv->lib = &iwl1000_lib;
1272                 break;
1273         case IWL_DEVICE_FAMILY_2000:
1274         case IWL_DEVICE_FAMILY_105:
1275                 priv->lib = &iwl2000_lib;
1276                 break;
1277         case IWL_DEVICE_FAMILY_2030:
1278         case IWL_DEVICE_FAMILY_135:
1279                 priv->lib = &iwl2030_lib;
1280                 break;
1281         case IWL_DEVICE_FAMILY_5000:
1282                 priv->lib = &iwl5000_lib;
1283                 break;
1284         case IWL_DEVICE_FAMILY_5150:
1285                 priv->lib = &iwl5150_lib;
1286                 break;
1287         case IWL_DEVICE_FAMILY_6000:
1288         case IWL_DEVICE_FAMILY_6005:
1289         case IWL_DEVICE_FAMILY_6000i:
1290         case IWL_DEVICE_FAMILY_6050:
1291         case IWL_DEVICE_FAMILY_6150:
1292                 priv->lib = &iwl6000_lib;
1293                 break;
1294         case IWL_DEVICE_FAMILY_6030:
1295                 priv->lib = &iwl6030_lib;
1296                 break;
1297         default:
1298                 break;
1299         }
1300
1301         if (WARN_ON(!priv->lib))
1302                 goto out_free_hw;
1303
1304         /*
1305          * Populate the state variables that the transport layer needs
1306          * to know about.
1307          */
1308         trans_cfg.op_mode = op_mode;
1309         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1310         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1311         trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1312         if (!iwlwifi_mod_params.wd_disable)
1313                 trans_cfg.queue_watchdog_timeout =
1314                         priv->cfg->base_params->wd_timeout;
1315         else
1316                 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1317         trans_cfg.command_names = iwl_dvm_cmd_strings;
1318         trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1319
1320         WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1321                 priv->cfg->base_params->num_of_queues);
1322
1323         ucode_flags = fw->ucode_capa.flags;
1324
1325 #ifndef CONFIG_IWLWIFI_P2P
1326         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1327 #endif
1328
1329         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1330                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1331                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1332         } else {
1333                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1334                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1335         }
1336
1337         /* Configure transport layer */
1338         iwl_trans_configure(priv->trans, &trans_cfg);
1339
1340         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1341         trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1342
1343         /* At this point both hw and priv are allocated. */
1344
1345         SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1346
1347         iwl_option_config(priv);
1348
1349         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1350
1351         /* is antenna coupling more than 35dB ? */
1352         priv->bt_ant_couple_ok =
1353                 (iwlwifi_mod_params.ant_coupling >
1354                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1355                         true : false;
1356
1357         /* enable/disable bt channel inhibition */
1358         priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1359         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1360                        (priv->bt_ch_announce) ? "On" : "Off");
1361
1362         /* these spin locks will be used in apm_ops.init and EEPROM access
1363          * we should init now
1364          */
1365         spin_lock_init(&priv->statistics.lock);
1366
1367         /***********************
1368          * 2. Read REV register
1369          ***********************/
1370         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1371                 priv->cfg->name, priv->trans->hw_rev);
1372
1373         if (iwl_trans_start_hw(priv->trans))
1374                 goto out_free_hw;
1375
1376         /* Read the EEPROM */
1377         if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1378                             &priv->eeprom_blob_size)) {
1379                 IWL_ERR(priv, "Unable to init EEPROM\n");
1380                 goto out_free_hw;
1381         }
1382
1383         /* Reset chip to save power until we load uCode during "up". */
1384         iwl_trans_stop_hw(priv->trans, false);
1385
1386         priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1387                                                   priv->eeprom_blob,
1388                                                   priv->eeprom_blob_size);
1389         if (!priv->nvm_data)
1390                 goto out_free_eeprom_blob;
1391
1392         if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1393                 goto out_free_eeprom;
1394
1395         if (iwl_eeprom_init_hw_params(priv))
1396                 goto out_free_eeprom;
1397
1398         /* extract MAC Address */
1399         memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1400         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1401         priv->hw->wiphy->addresses = priv->addresses;
1402         priv->hw->wiphy->n_addresses = 1;
1403         num_mac = priv->nvm_data->n_hw_addrs;
1404         if (num_mac > 1) {
1405                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1406                        ETH_ALEN);
1407                 priv->addresses[1].addr[5]++;
1408                 priv->hw->wiphy->n_addresses++;
1409         }
1410
1411         /************************
1412          * 4. Setup HW constants
1413          ************************/
1414         iwl_set_hw_params(priv);
1415
1416         if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1417                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1418                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1419                 /*
1420                  * if not PAN, then don't support P2P -- might be a uCode
1421                  * packaging bug or due to the eeprom check above
1422                  */
1423                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1424                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1425                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1426
1427                 /* Configure transport layer again*/
1428                 iwl_trans_configure(priv->trans, &trans_cfg);
1429         }
1430
1431         /*******************
1432          * 5. Setup priv
1433          *******************/
1434         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1435                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1436                 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1437                     i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1438                     i != IWL_IPAN_CMD_QUEUE_NUM)
1439                         priv->queue_to_mac80211[i] = i;
1440                 atomic_set(&priv->queue_stop_count[i], 0);
1441         }
1442
1443         if (iwl_init_drv(priv))
1444                 goto out_free_eeprom;
1445
1446         /* At this point both hw and priv are initialized. */
1447
1448         /********************
1449          * 6. Setup services
1450          ********************/
1451         iwl_setup_deferred_work(priv);
1452         iwl_setup_rx_handlers(priv);
1453         iwl_testmode_init(priv);
1454
1455         iwl_power_initialize(priv);
1456         iwl_tt_initialize(priv);
1457
1458         snprintf(priv->hw->wiphy->fw_version,
1459                  sizeof(priv->hw->wiphy->fw_version),
1460                  "%s", fw->fw_version);
1461
1462         priv->new_scan_threshold_behaviour =
1463                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1464
1465         priv->phy_calib_chain_noise_reset_cmd =
1466                 fw->ucode_capa.standard_phy_calibration_size;
1467         priv->phy_calib_chain_noise_gain_cmd =
1468                 fw->ucode_capa.standard_phy_calibration_size + 1;
1469
1470         /* initialize all valid contexts */
1471         iwl_init_context(priv, ucode_flags);
1472
1473         /**************************************************
1474          * This is still part of probe() in a sense...
1475          *
1476          * 7. Setup and register with mac80211 and debugfs
1477          **************************************************/
1478         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1479                 goto out_destroy_workqueue;
1480
1481         if (iwl_dbgfs_register(priv, dbgfs_dir))
1482                 goto out_mac80211_unregister;
1483
1484         return op_mode;
1485
1486 out_mac80211_unregister:
1487         iwlagn_mac_unregister(priv);
1488 out_destroy_workqueue:
1489         iwl_tt_exit(priv);
1490         iwl_testmode_free(priv);
1491         iwl_cancel_deferred_work(priv);
1492         destroy_workqueue(priv->workqueue);
1493         priv->workqueue = NULL;
1494         iwl_uninit_drv(priv);
1495 out_free_eeprom_blob:
1496         kfree(priv->eeprom_blob);
1497 out_free_eeprom:
1498         iwl_free_nvm_data(priv->nvm_data);
1499 out_free_hw:
1500         ieee80211_free_hw(priv->hw);
1501 out:
1502         op_mode = NULL;
1503         return op_mode;
1504 }
1505
1506 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1507 {
1508         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1509
1510         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1511
1512         iwl_testmode_free(priv);
1513         iwlagn_mac_unregister(priv);
1514
1515         iwl_tt_exit(priv);
1516
1517         kfree(priv->eeprom_blob);
1518         iwl_free_nvm_data(priv->nvm_data);
1519
1520         /*netif_stop_queue(dev); */
1521         flush_workqueue(priv->workqueue);
1522
1523         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1524          * priv->workqueue... so we can't take down the workqueue
1525          * until now... */
1526         destroy_workqueue(priv->workqueue);
1527         priv->workqueue = NULL;
1528
1529         iwl_uninit_drv(priv);
1530
1531         dev_kfree_skb(priv->beacon_skb);
1532
1533         iwl_trans_stop_hw(priv->trans, true);
1534         ieee80211_free_hw(priv->hw);
1535 }
1536
1537 static const char * const desc_lookup_text[] = {
1538         "OK",
1539         "FAIL",
1540         "BAD_PARAM",
1541         "BAD_CHECKSUM",
1542         "NMI_INTERRUPT_WDG",
1543         "SYSASSERT",
1544         "FATAL_ERROR",
1545         "BAD_COMMAND",
1546         "HW_ERROR_TUNE_LOCK",
1547         "HW_ERROR_TEMPERATURE",
1548         "ILLEGAL_CHAN_FREQ",
1549         "VCC_NOT_STABLE",
1550         "FH_ERROR",
1551         "NMI_INTERRUPT_HOST",
1552         "NMI_INTERRUPT_ACTION_PT",
1553         "NMI_INTERRUPT_UNKNOWN",
1554         "UCODE_VERSION_MISMATCH",
1555         "HW_ERROR_ABS_LOCK",
1556         "HW_ERROR_CAL_LOCK_FAIL",
1557         "NMI_INTERRUPT_INST_ACTION_PT",
1558         "NMI_INTERRUPT_DATA_ACTION_PT",
1559         "NMI_TRM_HW_ER",
1560         "NMI_INTERRUPT_TRM",
1561         "NMI_INTERRUPT_BREAK_POINT",
1562         "DEBUG_0",
1563         "DEBUG_1",
1564         "DEBUG_2",
1565         "DEBUG_3",
1566 };
1567
1568 static struct { char *name; u8 num; } advanced_lookup[] = {
1569         { "NMI_INTERRUPT_WDG", 0x34 },
1570         { "SYSASSERT", 0x35 },
1571         { "UCODE_VERSION_MISMATCH", 0x37 },
1572         { "BAD_COMMAND", 0x38 },
1573         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1574         { "FATAL_ERROR", 0x3D },
1575         { "NMI_TRM_HW_ERR", 0x46 },
1576         { "NMI_INTERRUPT_TRM", 0x4C },
1577         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1578         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1579         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1580         { "NMI_INTERRUPT_HOST", 0x66 },
1581         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1582         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1583         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1584         { "ADVANCED_SYSASSERT", 0 },
1585 };
1586
1587 static const char *desc_lookup(u32 num)
1588 {
1589         int i;
1590         int max = ARRAY_SIZE(desc_lookup_text);
1591
1592         if (num < max)
1593                 return desc_lookup_text[num];
1594
1595         max = ARRAY_SIZE(advanced_lookup) - 1;
1596         for (i = 0; i < max; i++) {
1597                 if (advanced_lookup[i].num == num)
1598                         break;
1599         }
1600         return advanced_lookup[i].name;
1601 }
1602
1603 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1604 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1605
1606 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1607 {
1608         struct iwl_trans *trans = priv->trans;
1609         u32 base;
1610         struct iwl_error_event_table table;
1611
1612         base = priv->device_pointers.error_event_table;
1613         if (priv->cur_ucode == IWL_UCODE_INIT) {
1614                 if (!base)
1615                         base = priv->fw->init_errlog_ptr;
1616         } else {
1617                 if (!base)
1618                         base = priv->fw->inst_errlog_ptr;
1619         }
1620
1621         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1622                 IWL_ERR(priv,
1623                         "Not valid error log pointer 0x%08X for %s uCode\n",
1624                         base,
1625                         (priv->cur_ucode == IWL_UCODE_INIT)
1626                                         ? "Init" : "RT");
1627                 return;
1628         }
1629
1630         /*TODO: Update dbgfs with ISR error stats obtained below */
1631         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1632
1633         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1634                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1635                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1636                         priv->status, table.valid);
1637         }
1638
1639         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1640                                       table.data1, table.data2, table.line,
1641                                       table.blink1, table.blink2, table.ilink1,
1642                                       table.ilink2, table.bcon_time, table.gp1,
1643                                       table.gp2, table.gp3, table.ucode_ver,
1644                                       table.hw_ver, table.brd_ver);
1645         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1646                 desc_lookup(table.error_id));
1647         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1648         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1649         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1650         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1651         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1652         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1653         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1654         IWL_ERR(priv, "0x%08X | line\n", table.line);
1655         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1656         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1657         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1658         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1659         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1660         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1661         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1662         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1663         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1664         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1665         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1666         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1667         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1668         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1669         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1670         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1671         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1672         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1673         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1674         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1675         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1676         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1677         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1678         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1679 }
1680
1681 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1682
1683 /**
1684  * iwl_print_event_log - Dump error event log to syslog
1685  *
1686  */
1687 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1688                                u32 num_events, u32 mode,
1689                                int pos, char **buf, size_t bufsz)
1690 {
1691         u32 i;
1692         u32 base;       /* SRAM byte address of event log header */
1693         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1694         u32 ptr;        /* SRAM byte address of log data */
1695         u32 ev, time, data; /* event log data */
1696         unsigned long reg_flags;
1697
1698         struct iwl_trans *trans = priv->trans;
1699
1700         if (num_events == 0)
1701                 return pos;
1702
1703         base = priv->device_pointers.log_event_table;
1704         if (priv->cur_ucode == IWL_UCODE_INIT) {
1705                 if (!base)
1706                         base = priv->fw->init_evtlog_ptr;
1707         } else {
1708                 if (!base)
1709                         base = priv->fw->inst_evtlog_ptr;
1710         }
1711
1712         if (mode == 0)
1713                 event_size = 2 * sizeof(u32);
1714         else
1715                 event_size = 3 * sizeof(u32);
1716
1717         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1718
1719         /* Make sure device is powered up for SRAM reads */
1720         if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1721                 return pos;
1722
1723         /* Set starting address; reads will auto-increment */
1724         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1725
1726         /* "time" is actually "data" for mode 0 (no timestamp).
1727         * place event id # at far right for easier visual parsing. */
1728         for (i = 0; i < num_events; i++) {
1729                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1730                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1731                 if (mode == 0) {
1732                         /* data, ev */
1733                         if (bufsz) {
1734                                 pos += scnprintf(*buf + pos, bufsz - pos,
1735                                                 "EVT_LOG:0x%08x:%04u\n",
1736                                                 time, ev);
1737                         } else {
1738                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1739                                         time, ev);
1740                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1741                                         time, ev);
1742                         }
1743                 } else {
1744                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1745                         if (bufsz) {
1746                                 pos += scnprintf(*buf + pos, bufsz - pos,
1747                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1748                                                  time, data, ev);
1749                         } else {
1750                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1751                                         time, data, ev);
1752                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1753                                         data, ev);
1754                         }
1755                 }
1756         }
1757
1758         /* Allow device to power down */
1759         iwl_trans_release_nic_access(trans, &reg_flags);
1760         return pos;
1761 }
1762
1763 /**
1764  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1765  */
1766 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1767                                     u32 num_wraps, u32 next_entry,
1768                                     u32 size, u32 mode,
1769                                     int pos, char **buf, size_t bufsz)
1770 {
1771         /*
1772          * display the newest DEFAULT_LOG_ENTRIES entries
1773          * i.e the entries just before the next ont that uCode would fill.
1774          */
1775         if (num_wraps) {
1776                 if (next_entry < size) {
1777                         pos = iwl_print_event_log(priv,
1778                                                 capacity - (size - next_entry),
1779                                                 size - next_entry, mode,
1780                                                 pos, buf, bufsz);
1781                         pos = iwl_print_event_log(priv, 0,
1782                                                   next_entry, mode,
1783                                                   pos, buf, bufsz);
1784                 } else
1785                         pos = iwl_print_event_log(priv, next_entry - size,
1786                                                   size, mode, pos, buf, bufsz);
1787         } else {
1788                 if (next_entry < size) {
1789                         pos = iwl_print_event_log(priv, 0, next_entry,
1790                                                   mode, pos, buf, bufsz);
1791                 } else {
1792                         pos = iwl_print_event_log(priv, next_entry - size,
1793                                                   size, mode, pos, buf, bufsz);
1794                 }
1795         }
1796         return pos;
1797 }
1798
1799 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1800
1801 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1802                             char **buf)
1803 {
1804         u32 base;       /* SRAM byte address of event log header */
1805         u32 capacity;   /* event log capacity in # entries */
1806         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1807         u32 num_wraps;  /* # times uCode wrapped to top of log */
1808         u32 next_entry; /* index of next entry to be written by uCode */
1809         u32 size;       /* # entries that we'll print */
1810         u32 logsize;
1811         int pos = 0;
1812         size_t bufsz = 0;
1813         struct iwl_trans *trans = priv->trans;
1814
1815         base = priv->device_pointers.log_event_table;
1816         if (priv->cur_ucode == IWL_UCODE_INIT) {
1817                 logsize = priv->fw->init_evtlog_size;
1818                 if (!base)
1819                         base = priv->fw->init_evtlog_ptr;
1820         } else {
1821                 logsize = priv->fw->inst_evtlog_size;
1822                 if (!base)
1823                         base = priv->fw->inst_evtlog_ptr;
1824         }
1825
1826         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1827                 IWL_ERR(priv,
1828                         "Invalid event log pointer 0x%08X for %s uCode\n",
1829                         base,
1830                         (priv->cur_ucode == IWL_UCODE_INIT)
1831                                         ? "Init" : "RT");
1832                 return -EINVAL;
1833         }
1834
1835         /* event log header */
1836         capacity = iwl_trans_read_mem32(trans, base);
1837         mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1838         num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1839         next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1840
1841         if (capacity > logsize) {
1842                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1843                         "entries\n", capacity, logsize);
1844                 capacity = logsize;
1845         }
1846
1847         if (next_entry > logsize) {
1848                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1849                         next_entry, logsize);
1850                 next_entry = logsize;
1851         }
1852
1853         size = num_wraps ? capacity : next_entry;
1854
1855         /* bail out if nothing in log */
1856         if (size == 0) {
1857                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1858                 return pos;
1859         }
1860
1861 #ifdef CONFIG_IWLWIFI_DEBUG
1862         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1863                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1864                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1865 #else
1866         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1867                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1868 #endif
1869         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1870                 size);
1871
1872 #ifdef CONFIG_IWLWIFI_DEBUG
1873         if (buf) {
1874                 if (full_log)
1875                         bufsz = capacity * 48;
1876                 else
1877                         bufsz = size * 48;
1878                 *buf = kmalloc(bufsz, GFP_KERNEL);
1879                 if (!*buf)
1880                         return -ENOMEM;
1881         }
1882         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1883                 /*
1884                  * if uCode has wrapped back to top of log,
1885                  * start at the oldest entry,
1886                  * i.e the next one that uCode would fill.
1887                  */
1888                 if (num_wraps)
1889                         pos = iwl_print_event_log(priv, next_entry,
1890                                                 capacity - next_entry, mode,
1891                                                 pos, buf, bufsz);
1892                 /* (then/else) start at top of log */
1893                 pos = iwl_print_event_log(priv, 0,
1894                                           next_entry, mode, pos, buf, bufsz);
1895         } else
1896                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1897                                                 next_entry, size, mode,
1898                                                 pos, buf, bufsz);
1899 #else
1900         pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1901                                         next_entry, size, mode,
1902                                         pos, buf, bufsz);
1903 #endif
1904         return pos;
1905 }
1906
1907 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1908 {
1909         unsigned int reload_msec;
1910         unsigned long reload_jiffies;
1911
1912 #ifdef CONFIG_IWLWIFI_DEBUG
1913         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1914                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1915 #endif
1916
1917         /* uCode is no longer loaded. */
1918         priv->ucode_loaded = false;
1919
1920         /* Set the FW error flag -- cleared on iwl_down */
1921         set_bit(STATUS_FW_ERROR, &priv->status);
1922
1923         iwl_abort_notification_waits(&priv->notif_wait);
1924
1925         /* Keep the restart process from trying to send host
1926          * commands by clearing the ready bit */
1927         clear_bit(STATUS_READY, &priv->status);
1928
1929         if (!ondemand) {
1930                 /*
1931                  * If firmware keep reloading, then it indicate something
1932                  * serious wrong and firmware having problem to recover
1933                  * from it. Instead of keep trying which will fill the syslog
1934                  * and hang the system, let's just stop it
1935                  */
1936                 reload_jiffies = jiffies;
1937                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1938                                         (long) priv->reload_jiffies);
1939                 priv->reload_jiffies = reload_jiffies;
1940                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1941                         priv->reload_count++;
1942                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1943                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1944                                 return;
1945                         }
1946                 } else
1947                         priv->reload_count = 0;
1948         }
1949
1950         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1951                 if (iwlwifi_mod_params.restart_fw) {
1952                         IWL_DEBUG_FW_ERRORS(priv,
1953                                   "Restarting adapter due to uCode error.\n");
1954                         queue_work(priv->workqueue, &priv->restart);
1955                 } else
1956                         IWL_DEBUG_FW_ERRORS(priv,
1957                                   "Detected FW error, but not restarting\n");
1958         }
1959 }
1960
1961 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1962 {
1963         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1964
1965         IWL_ERR(priv, "Loaded firmware version: %s\n",
1966                 priv->fw->fw_version);
1967
1968         iwl_dump_nic_error_log(priv);
1969         iwl_dump_nic_event_log(priv, false, NULL);
1970
1971         iwlagn_fw_error(priv, false);
1972 }
1973
1974 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1975 {
1976         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1977
1978         if (!iwl_check_for_ct_kill(priv)) {
1979                 IWL_ERR(priv, "Restarting adapter queue is full\n");
1980                 iwlagn_fw_error(priv, false);
1981         }
1982 }
1983
1984 #define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1985
1986 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1987 {
1988         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1989
1990         /* SKU Control */
1991         iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
1992                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_DASH |
1993                                 CSR_HW_IF_CONFIG_REG_MSK_MAC_STEP,
1994                                 (CSR_HW_REV_STEP(priv->trans->hw_rev) <<
1995                                         CSR_HW_IF_CONFIG_REG_POS_MAC_STEP) |
1996                                 (CSR_HW_REV_DASH(priv->trans->hw_rev) <<
1997                                         CSR_HW_IF_CONFIG_REG_POS_MAC_DASH));
1998
1999         /* write radio config values to register */
2000         if (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
2001                 u32 reg_val =
2002                         priv->nvm_data->radio_cfg_type <<
2003                                 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2004                         priv->nvm_data->radio_cfg_step <<
2005                                 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2006                         priv->nvm_data->radio_cfg_dash <<
2007                                 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2008
2009                 iwl_trans_set_bits_mask(priv->trans, CSR_HW_IF_CONFIG_REG,
2010                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_TYPE |
2011                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_STEP |
2012                                         CSR_HW_IF_CONFIG_REG_MSK_PHY_DASH,
2013                                         reg_val);
2014
2015                 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2016                          priv->nvm_data->radio_cfg_type,
2017                          priv->nvm_data->radio_cfg_step,
2018                          priv->nvm_data->radio_cfg_dash);
2019         } else {
2020                 WARN_ON(1);
2021         }
2022
2023         /* set CSR_HW_CONFIG_REG for uCode use */
2024         iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2025                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2026                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2027
2028         /* W/A : NIC is stuck in a reset state after Early PCIe power off
2029          * (PCIe power is lost before PERST# is asserted),
2030          * causing ME FW to lose ownership and not being able to obtain it back.
2031          */
2032         iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2033                                APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2034                                ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2035
2036         if (priv->lib->nic_config)
2037                 priv->lib->nic_config(priv);
2038 }
2039
2040 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2041 {
2042         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2043
2044         clear_bit(STATUS_READY, &priv->status);
2045         IWL_ERR(priv, "RF is used by WiMAX\n");
2046 }
2047
2048 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2049 {
2050         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2051         int mq = priv->queue_to_mac80211[queue];
2052
2053         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2054                 return;
2055
2056         if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2057                 IWL_DEBUG_TX_QUEUES(priv,
2058                         "queue %d (mac80211 %d) already stopped\n",
2059                         queue, mq);
2060                 return;
2061         }
2062
2063         set_bit(mq, &priv->transport_queue_stop);
2064         ieee80211_stop_queue(priv->hw, mq);
2065 }
2066
2067 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2068 {
2069         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2070         int mq = priv->queue_to_mac80211[queue];
2071
2072         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2073                 return;
2074
2075         if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2076                 IWL_DEBUG_TX_QUEUES(priv,
2077                         "queue %d (mac80211 %d) already awake\n",
2078                         queue, mq);
2079                 return;
2080         }
2081
2082         clear_bit(mq, &priv->transport_queue_stop);
2083
2084         if (!priv->passive_no_rx)
2085                 ieee80211_wake_queue(priv->hw, mq);
2086 }
2087
2088 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2089 {
2090         int mq;
2091
2092         if (!priv->passive_no_rx)
2093                 return;
2094
2095         for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2096                 if (!test_bit(mq, &priv->transport_queue_stop)) {
2097                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2098                         ieee80211_wake_queue(priv->hw, mq);
2099                 } else {
2100                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2101                 }
2102         }
2103
2104         priv->passive_no_rx = false;
2105 }
2106
2107 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2108 {
2109         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2110         struct ieee80211_tx_info *info;
2111
2112         info = IEEE80211_SKB_CB(skb);
2113         iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2114         ieee80211_free_txskb(priv->hw, skb);
2115 }
2116
2117 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2118 {
2119         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2120
2121         if (state)
2122                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2123         else
2124                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2125
2126         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2127 }
2128
2129 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2130         .start = iwl_op_mode_dvm_start,
2131         .stop = iwl_op_mode_dvm_stop,
2132         .rx = iwl_rx_dispatch,
2133         .queue_full = iwl_stop_sw_queue,
2134         .queue_not_full = iwl_wake_sw_queue,
2135         .hw_rf_kill = iwl_set_hw_rfkill_state,
2136         .free_skb = iwl_free_skb,
2137         .nic_error = iwl_nic_error,
2138         .cmd_queue_full = iwl_cmd_queue_full,
2139         .nic_config = iwl_nic_config,
2140         .wimax_active = iwl_wimax_active,
2141 };
2142
2143 /*****************************************************************************
2144  *
2145  * driver and module entry point
2146  *
2147  *****************************************************************************/
2148 static int __init iwl_init(void)
2149 {
2150
2151         int ret;
2152
2153         ret = iwlagn_rate_control_register();
2154         if (ret) {
2155                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2156                 return ret;
2157         }
2158
2159         ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2160         if (ret) {
2161                 pr_err("Unable to register op_mode: %d\n", ret);
2162                 iwlagn_rate_control_unregister();
2163         }
2164
2165         return ret;
2166 }
2167 module_init(iwl_init);
2168
2169 static void __exit iwl_exit(void)
2170 {
2171         iwl_opmode_deregister("iwldvm");
2172         iwlagn_rate_control_unregister();
2173 }
2174 module_exit(iwl_exit);