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         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         if (!iwl_trans_grab_nic_access(priv->trans, false, &reg_flags))
 357                 return;
 358
 359         /* Set starting address; reads will auto-increment */
 360         iwl_write32(priv->trans, HBUS_TARG_MEM_RADDR, ptr);
 361
 362         /*
 363          * Refuse to read more than would have fit into the log from
 364          * the current start_idx. This used to happen due to the race
 365          * described below, but now WARN because the code below should
 366          * prevent it from happening here.
 367          */
 368         if (WARN_ON(num_events > capacity - start_idx))
 369                 num_events = capacity - start_idx;
 370
 371         /*
 372          * "time" is actually "data" for mode 0 (no timestamp).
 373          * place event id # at far right for easier visual parsing.
 374          */
 375         for (i = 0; i < num_events; i++) {
 376                 ev = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 377                 time = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 378                 if (mode == 0) {
 379                         trace_iwlwifi_dev_ucode_cont_event(
 380                                         priv->trans->dev, 0, time, ev);
 381                 } else {
 382                         data = iwl_read32(priv->trans, HBUS_TARG_MEM_RDAT);
 383                         trace_iwlwifi_dev_ucode_cont_event(
 384                                         priv->trans->dev, time, data, ev);
 385                 }
 386         }
 387         /* Allow device to power down */
 388         iwl_trans_release_nic_access(priv->trans, &reg_flags);
 389 }
 390
 391 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 392 {
 393         u32 capacity;   /* event log capacity in # entries */
 394         struct {
 395                 u32 capacity;
 396                 u32 mode;
 397                 u32 wrap_counter;
 398                 u32 write_counter;
 399         } __packed read;
 400         u32 base;       /* SRAM byte address of event log header */
 401         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 402         u32 num_wraps;  /* # times uCode wrapped to top of log */
 403         u32 next_entry; /* index of next entry to be written by uCode */
 404
 405         base = priv->device_pointers.log_event_table;
 406         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 407                 iwl_trans_read_mem_bytes(priv->trans, base,
 408                                          &read, sizeof(read));
 409                 capacity = read.capacity;
 410                 mode = read.mode;
 411                 num_wraps = read.wrap_counter;
 412                 next_entry = read.write_counter;
 413         } else
 414                 return;
 415
 416         /*
 417          * Unfortunately, the uCode doesn't use temporary variables.
 418          * Therefore, it can happen that we read next_entry == capacity,
 419          * which really means next_entry == 0.
 420          */
 421         if (unlikely(next_entry == capacity))
 422                 next_entry = 0;
 423         /*
 424          * Additionally, the uCode increases the write pointer before
 425          * the wraps counter, so if the write pointer is smaller than
 426          * the old write pointer (wrap occurred) but we read that no
 427          * wrap occurred, we actually read between the next_entry and
 428          * num_wraps update (this does happen in practice!!) -- take
 429          * that into account by increasing num_wraps.
 430          */
 431         if (unlikely(next_entry < priv->event_log.next_entry &&
 432                      num_wraps == priv->event_log.num_wraps))
 433                 num_wraps++;
 434
 435         if (num_wraps == priv->event_log.num_wraps) {
 436                 iwl_print_cont_event_trace(
 437                         priv, base, priv->event_log.next_entry,
 438                         next_entry - priv->event_log.next_entry,
 439                         capacity, mode);
 440
 441                 priv->event_log.non_wraps_count++;
 442         } else {
 443                 if (num_wraps - priv->event_log.num_wraps > 1)
 444                         priv->event_log.wraps_more_count++;
 445                 else
 446                         priv->event_log.wraps_once_count++;
 447
 448                 trace_iwlwifi_dev_ucode_wrap_event(priv->trans->dev,
 449                                 num_wraps - priv->event_log.num_wraps,
 450                                 next_entry, priv->event_log.next_entry);
 451
 452                 if (next_entry < priv->event_log.next_entry) {
 453                         iwl_print_cont_event_trace(
 454                                 priv, base, priv->event_log.next_entry,
 455                                 capacity - priv->event_log.next_entry,
 456                                 capacity, mode);
 457
 458                         iwl_print_cont_event_trace(
 459                                 priv, base, 0, next_entry, capacity, mode);
 460                 } else {
 461                         iwl_print_cont_event_trace(
 462                                 priv, base, next_entry,
 463                                 capacity - next_entry,
 464                                 capacity, mode);
 465
 466                         iwl_print_cont_event_trace(
 467                                 priv, base, 0, next_entry, capacity, mode);
 468                 }
 469         }
 470
 471         priv->event_log.num_wraps = num_wraps;
 472         priv->event_log.next_entry = next_entry;
 473 }
 474
 475 /**
 476  * iwl_bg_ucode_trace - Timer callback to log ucode event
 477  *
 478  * The timer is continually set to execute every
 479  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 480  * this function is to perform continuous uCode event logging operation
 481  * if enabled
 482  */
 483 static void iwl_bg_ucode_trace(unsigned long data)
 484 {
 485         struct iwl_priv *priv = (struct iwl_priv *)data;
 486
 487         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 488                 return;
 489
 490         if (priv->event_log.ucode_trace) {
 491                 iwl_continuous_event_trace(priv);
 492                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 493                 mod_timer(&priv->ucode_trace,
 494                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 495         }
 496 }
 497
 498 static void iwl_bg_tx_flush(struct work_struct *work)
 499 {
 500         struct iwl_priv *priv =
 501                 container_of(work, struct iwl_priv, tx_flush);
 502
 503         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 504                 return;
 505
 506         /* do nothing if rf-kill is on */
 507         if (!iwl_is_ready_rf(priv))
 508                 return;
 509
 510         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 511         iwlagn_dev_txfifo_flush(priv);
 512 }
 513
 514 /*
 515  * queue/FIFO/AC mapping definitions
 516  */
 517
 518 static const u8 iwlagn_bss_ac_to_fifo[] = {
 519         IWL_TX_FIFO_VO,
 520         IWL_TX_FIFO_VI,
 521         IWL_TX_FIFO_BE,
 522         IWL_TX_FIFO_BK,
 523 };
 524
 525 static const u8 iwlagn_bss_ac_to_queue[] = {
 526         0, 1, 2, 3,
 527 };
 528
 529 static const u8 iwlagn_pan_ac_to_fifo[] = {
 530         IWL_TX_FIFO_VO_IPAN,
 531         IWL_TX_FIFO_VI_IPAN,
 532         IWL_TX_FIFO_BE_IPAN,
 533         IWL_TX_FIFO_BK_IPAN,
 534 };
 535
 536 static const u8 iwlagn_pan_ac_to_queue[] = {
 537         7, 6, 5, 4,
 538 };
 539
 540 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 541 {
 542         int i;
 543
 544         /*
 545          * The default context is always valid,
 546          * the PAN context depends on uCode.
 547          */
 548         priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 549         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 550                 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 551
 552         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 553                 priv->contexts[i].ctxid = i;
 554
 555         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 556         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 557         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 558         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 559         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 560         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 561         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 562         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 563         priv->contexts[IWL_RXON_CTX_BSS].bcast_sta_id = IWLAGN_BROADCAST_ID;
 564         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 565                 BIT(NL80211_IFTYPE_ADHOC) | BIT(NL80211_IFTYPE_MONITOR);
 566         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 567                 BIT(NL80211_IFTYPE_STATION);
 568         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 569         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 570         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 571         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 572         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue,
 573                iwlagn_bss_ac_to_queue, sizeof(iwlagn_bss_ac_to_queue));
 574         memcpy(priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo,
 575                iwlagn_bss_ac_to_fifo, sizeof(iwlagn_bss_ac_to_fifo));
 576
 577         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 578         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 579                 REPLY_WIPAN_RXON_TIMING;
 580         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 581                 REPLY_WIPAN_RXON_ASSOC;
 582         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 583         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 584         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 585         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 586         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 587         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 588                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 589
 590         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 591                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 592                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 593                         BIT(NL80211_IFTYPE_P2P_GO);
 594
 595         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 596         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 597         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 598         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue,
 599                iwlagn_pan_ac_to_queue, sizeof(iwlagn_pan_ac_to_queue));
 600         memcpy(priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo,
 601                iwlagn_pan_ac_to_fifo, sizeof(iwlagn_pan_ac_to_fifo));
 602         priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
 603
 604         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 605 }
 606
 607 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
 608 {
 609         struct iwl_ct_kill_config cmd;
 610         struct iwl_ct_kill_throttling_config adv_cmd;
 611         int ret = 0;
 612
 613         iwl_write32(priv->trans, CSR_UCODE_DRV_GP1_CLR,
 614                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
 615
 616         priv->thermal_throttle.ct_kill_toggle = false;
 617
 618         if (priv->cfg->base_params->support_ct_kill_exit) {
 619                 adv_cmd.critical_temperature_enter =
 620                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 621                 adv_cmd.critical_temperature_exit =
 622                         cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
 623
 624                 ret = iwl_dvm_send_cmd_pdu(priv,
 625                                        REPLY_CT_KILL_CONFIG_CMD,
 626                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
 627                 if (ret)
 628                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 629                 else
 630                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 631                                 "succeeded, critical temperature enter is %d,"
 632                                 "exit is %d\n",
 633                                 priv->hw_params.ct_kill_threshold,
 634                                 priv->hw_params.ct_kill_exit_threshold);
 635         } else {
 636                 cmd.critical_temperature_R =
 637                         cpu_to_le32(priv->hw_params.ct_kill_threshold);
 638
 639                 ret = iwl_dvm_send_cmd_pdu(priv,
 640                                        REPLY_CT_KILL_CONFIG_CMD,
 641                                        CMD_SYNC, sizeof(cmd), &cmd);
 642                 if (ret)
 643                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
 644                 else
 645                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
 646                                 "succeeded, "
 647                                 "critical temperature is %d\n",
 648                                 priv->hw_params.ct_kill_threshold);
 649         }
 650 }
 651
 652 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
 653 {
 654         struct iwl_calib_cfg_cmd calib_cfg_cmd;
 655         struct iwl_host_cmd cmd = {
 656                 .id = CALIBRATION_CFG_CMD,
 657                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
 658                 .data = { &calib_cfg_cmd, },
 659         };
 660
 661         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
 662         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
 663         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
 664
 665         return iwl_dvm_send_cmd(priv, &cmd);
 666 }
 667
 668
 669 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
 670 {
 671         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
 672           .valid = cpu_to_le32(valid_tx_ant),
 673         };
 674
 675         if (IWL_UCODE_API(priv->fw->ucode_ver) > 1) {
 676                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
 677                 return iwl_dvm_send_cmd_pdu(priv,
 678                                         TX_ANT_CONFIGURATION_CMD,
 679                                         CMD_SYNC,
 680                                         sizeof(struct iwl_tx_ant_config_cmd),
 681                                         &tx_ant_cmd);
 682         } else {
 683                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
 684                 return -EOPNOTSUPP;
 685         }
 686 }
 687
 688 static void iwl_send_bt_config(struct iwl_priv *priv)
 689 {
 690         struct iwl_bt_cmd bt_cmd = {
 691                 .lead_time = BT_LEAD_TIME_DEF,
 692                 .max_kill = BT_MAX_KILL_DEF,
 693                 .kill_ack_mask = 0,
 694                 .kill_cts_mask = 0,
 695         };
 696
 697         if (!iwlwifi_mod_params.bt_coex_active)
 698                 bt_cmd.flags = BT_COEX_DISABLE;
 699         else
 700                 bt_cmd.flags = BT_COEX_ENABLE;
 701
 702         priv->bt_enable_flag = bt_cmd.flags;
 703         IWL_DEBUG_INFO(priv, "BT coex %s\n",
 704                 (bt_cmd.flags == BT_COEX_DISABLE) ? "disable" : "active");
 705
 706         if (iwl_dvm_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 707                              CMD_SYNC, sizeof(struct iwl_bt_cmd), &bt_cmd))
 708                 IWL_ERR(priv, "failed to send BT Coex Config\n");
 709 }
 710
 711 /**
 712  * iwl_alive_start - called after REPLY_ALIVE notification received
 713  *                   from protocol/runtime uCode (initialization uCode's
 714  *                   Alive gets handled by iwl_init_alive_start()).
 715  */
 716 int iwl_alive_start(struct iwl_priv *priv)
 717 {
 718         int ret = 0;
 719         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
 720
 721         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
 722
 723         /* After the ALIVE response, we can send host commands to the uCode */
 724         set_bit(STATUS_ALIVE, &priv->status);
 725
 726         if (iwl_is_rfkill(priv))
 727                 return -ERFKILL;
 728
 729         if (priv->event_log.ucode_trace) {
 730                 /* start collecting data now */
 731                 mod_timer(&priv->ucode_trace, jiffies);
 732         }
 733
 734         /* download priority table before any calibration request */
 735         if (priv->cfg->bt_params &&
 736             priv->cfg->bt_params->advanced_bt_coexist) {
 737                 /* Configure Bluetooth device coexistence support */
 738                 if (priv->cfg->bt_params->bt_sco_disable)
 739                         priv->bt_enable_pspoll = false;
 740                 else
 741                         priv->bt_enable_pspoll = true;
 742
 743                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
 744                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
 745                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
 746                 iwlagn_send_advance_bt_config(priv);
 747                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
 748                 priv->cur_rssi_ctx = NULL;
 749
 750                 iwl_send_prio_tbl(priv);
 751
 752                 /* FIXME: w/a to force change uCode BT state machine */
 753                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
 754                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 755                 if (ret)
 756                         return ret;
 757                 ret = iwl_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
 758                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
 759                 if (ret)
 760                         return ret;
 761         } else if (priv->cfg->bt_params) {
 762                 /*
 763                  * default is 2-wire BT coexexistence support
 764                  */
 765                 iwl_send_bt_config(priv);
 766         }
 767
 768         /*
 769          * Perform runtime calibrations, including DC calibration.
 770          */
 771         iwlagn_send_calib_cfg_rt(priv, IWL_CALIB_CFG_DC_IDX);
 772
 773         ieee80211_wake_queues(priv->hw);
 774
 775         /* Configure Tx antenna selection based on H/W config */
 776         iwlagn_send_tx_ant_config(priv, priv->nvm_data->valid_tx_ant);
 777
 778         if (iwl_is_associated_ctx(ctx) && !priv->wowlan) {
 779                 struct iwl_rxon_cmd *active_rxon =
 780                                 (struct iwl_rxon_cmd *)&ctx->active;
 781                 /* apply any changes in staging */
 782                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
 783                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 784         } else {
 785                 struct iwl_rxon_context *tmp;
 786                 /* Initialize our rx_config data */
 787                 for_each_context(priv, tmp)
 788                         iwl_connection_init_rx_config(priv, tmp);
 789
 790                 iwlagn_set_rxon_chain(priv, ctx);
 791         }
 792
 793         if (!priv->wowlan) {
 794                 /* WoWLAN ucode will not reply in the same way, skip it */
 795                 iwl_reset_run_time_calib(priv);
 796         }
 797
 798         set_bit(STATUS_READY, &priv->status);
 799
 800         /* Configure the adapter for unassociated operation */
 801         ret = iwlagn_commit_rxon(priv, ctx);
 802         if (ret)
 803                 return ret;
 804
 805         /* At this point, the NIC is initialized and operational */
 806         iwl_rf_kill_ct_config(priv);
 807
 808         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
 809
 810         return iwl_power_update_mode(priv, true);
 811 }
 812
 813 /**
 814  * iwl_clear_driver_stations - clear knowledge of all stations from driver
 815  * @priv: iwl priv struct
 816  *
 817  * This is called during iwl_down() to make sure that in the case
 818  * we're coming there from a hardware restart mac80211 will be
 819  * able to reconfigure stations -- if we're getting there in the
 820  * normal down flow then the stations will already be cleared.
 821  */
 822 static void iwl_clear_driver_stations(struct iwl_priv *priv)
 823 {
 824         struct iwl_rxon_context *ctx;
 825
 826         spin_lock_bh(&priv->sta_lock);
 827         memset(priv->stations, 0, sizeof(priv->stations));
 828         priv->num_stations = 0;
 829
 830         priv->ucode_key_table = 0;
 831
 832         for_each_context(priv, ctx) {
 833                 /*
 834                  * Remove all key information that is not stored as part
 835                  * of station information since mac80211 may not have had
 836                  * a chance to remove all the keys. When device is
 837                  * reconfigured by mac80211 after an error all keys will
 838                  * be reconfigured.
 839                  */
 840                 memset(ctx->wep_keys, 0, sizeof(ctx->wep_keys));
 841                 ctx->key_mapping_keys = 0;
 842         }
 843
 844         spin_unlock_bh(&priv->sta_lock);
 845 }
 846
 847 void iwl_down(struct iwl_priv *priv)
 848 {
 849         int exit_pending;
 850
 851         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
 852
 853         lockdep_assert_held(&priv->mutex);
 854
 855         iwl_scan_cancel_timeout(priv, 200);
 856
 857         /*
 858          * If active, scanning won't cancel it, so say it expired.
 859          * No race since we hold the mutex here and a new one
 860          * can't come in at this time.
 861          */
 862         if (priv->ucode_loaded && priv->cur_ucode != IWL_UCODE_INIT)
 863                 ieee80211_remain_on_channel_expired(priv->hw);
 864
 865         exit_pending =
 866                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
 867
 868         iwl_clear_ucode_stations(priv, NULL);
 869         iwl_dealloc_bcast_stations(priv);
 870         iwl_clear_driver_stations(priv);
 871
 872         /* reset BT coex data */
 873         priv->bt_status = 0;
 874         priv->cur_rssi_ctx = NULL;
 875         priv->bt_is_sco = 0;
 876         if (priv->cfg->bt_params)
 877                 priv->bt_traffic_load =
 878                          priv->cfg->bt_params->bt_init_traffic_load;
 879         else
 880                 priv->bt_traffic_load = 0;
 881         priv->bt_full_concurrent = false;
 882         priv->bt_ci_compliance = 0;
 883
 884         /* Wipe out the EXIT_PENDING status bit if we are not actually
 885          * exiting the module */
 886         if (!exit_pending)
 887                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
 888
 889         if (priv->mac80211_registered)
 890                 ieee80211_stop_queues(priv->hw);
 891
 892         priv->ucode_loaded = false;
 893         iwl_trans_stop_device(priv->trans);
 894
 895         /* Set num_aux_in_flight must be done after the transport is stopped */
 896         atomic_set(&priv->num_aux_in_flight, 0);
 897
 898         /* Clear out all status bits but a few that are stable across reset */
 899         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
 900                                 STATUS_RF_KILL_HW |
 901                         test_bit(STATUS_FW_ERROR, &priv->status) <<
 902                                 STATUS_FW_ERROR |
 903                         test_bit(STATUS_EXIT_PENDING, &priv->status) <<
 904                                 STATUS_EXIT_PENDING;
 905
 906         dev_kfree_skb(priv->beacon_skb);
 907         priv->beacon_skb = NULL;
 908 }
 909
 910 /*****************************************************************************
 911  *
 912  * Workqueue callbacks
 913  *
 914  *****************************************************************************/
 915
 916 static void iwl_bg_run_time_calib_work(struct work_struct *work)
 917 {
 918         struct iwl_priv *priv = container_of(work, struct iwl_priv,
 919                         run_time_calib_work);
 920
 921         mutex_lock(&priv->mutex);
 922
 923         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
 924             test_bit(STATUS_SCANNING, &priv->status)) {
 925                 mutex_unlock(&priv->mutex);
 926                 return;
 927         }
 928
 929         if (priv->start_calib) {
 930                 iwl_chain_noise_calibration(priv);
 931                 iwl_sensitivity_calibration(priv);
 932         }
 933
 934         mutex_unlock(&priv->mutex);
 935 }
 936
 937 void iwlagn_prepare_restart(struct iwl_priv *priv)
 938 {
 939         bool bt_full_concurrent;
 940         u8 bt_ci_compliance;
 941         u8 bt_load;
 942         u8 bt_status;
 943         bool bt_is_sco;
 944         int i;
 945
 946         lockdep_assert_held(&priv->mutex);
 947
 948         priv->is_open = 0;
 949
 950         /*
 951          * __iwl_down() will clear the BT status variables,
 952          * which is correct, but when we restart we really
 953          * want to keep them so restore them afterwards.
 954          *
 955          * The restart process will later pick them up and
 956          * re-configure the hw when we reconfigure the BT
 957          * command.
 958          */
 959         bt_full_concurrent = priv->bt_full_concurrent;
 960         bt_ci_compliance = priv->bt_ci_compliance;
 961         bt_load = priv->bt_traffic_load;
 962         bt_status = priv->bt_status;
 963         bt_is_sco = priv->bt_is_sco;
 964
 965         iwl_down(priv);
 966
 967         priv->bt_full_concurrent = bt_full_concurrent;
 968         priv->bt_ci_compliance = bt_ci_compliance;
 969         priv->bt_traffic_load = bt_load;
 970         priv->bt_status = bt_status;
 971         priv->bt_is_sco = bt_is_sco;
 972
 973         /* reset aggregation queues */
 974         for (i = IWLAGN_FIRST_AMPDU_QUEUE; i < IWL_MAX_HW_QUEUES; i++)
 975                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
 976         /* and stop counts */
 977         for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
 978                 atomic_set(&priv->queue_stop_count[i], 0);
 979
 980         memset(priv->agg_q_alloc, 0, sizeof(priv->agg_q_alloc));
 981 }
 982
 983 static void iwl_bg_restart(struct work_struct *data)
 984 {
 985         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
 986
 987         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 988                 return;
 989
 990         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
 991                 mutex_lock(&priv->mutex);
 992                 iwlagn_prepare_restart(priv);
 993                 mutex_unlock(&priv->mutex);
 994                 iwl_cancel_deferred_work(priv);
 995                 if (priv->mac80211_registered)
 996                         ieee80211_restart_hw(priv->hw);
 997                 else
 998                         IWL_ERR(priv,
 999                                 "Cannot request restart before registrating with mac80211");
1000         } else {
1001                 WARN_ON(1);
1002         }
1003 }
1004
1005
1006
1007
1008 void iwlagn_disable_roc(struct iwl_priv *priv)
1009 {
1010         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1011
1012         lockdep_assert_held(&priv->mutex);
1013
1014         if (!priv->hw_roc_setup)
1015                 return;
1016
1017         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1018         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1019
1020         priv->hw_roc_channel = NULL;
1021
1022         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1023
1024         iwlagn_commit_rxon(priv, ctx);
1025
1026         ctx->is_active = false;
1027         priv->hw_roc_setup = false;
1028 }
1029
1030 static void iwlagn_disable_roc_work(struct work_struct *work)
1031 {
1032         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1033                                              hw_roc_disable_work.work);
1034
1035         mutex_lock(&priv->mutex);
1036         iwlagn_disable_roc(priv);
1037         mutex_unlock(&priv->mutex);
1038 }
1039
1040 /*****************************************************************************
1041  *
1042  * driver setup and teardown
1043  *
1044  *****************************************************************************/
1045
1046 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1047 {
1048         priv->workqueue = create_singlethread_workqueue(DRV_NAME);
1049
1050         INIT_WORK(&priv->restart, iwl_bg_restart);
1051         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1052         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1053         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1054         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1055         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1056         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1057                           iwlagn_disable_roc_work);
1058
1059         iwl_setup_scan_deferred_work(priv);
1060
1061         if (priv->cfg->bt_params)
1062                 iwlagn_bt_setup_deferred_work(priv);
1063
1064         init_timer(&priv->statistics_periodic);
1065         priv->statistics_periodic.data = (unsigned long)priv;
1066         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1067
1068         init_timer(&priv->ucode_trace);
1069         priv->ucode_trace.data = (unsigned long)priv;
1070         priv->ucode_trace.function = iwl_bg_ucode_trace;
1071 }
1072
1073 void iwl_cancel_deferred_work(struct iwl_priv *priv)
1074 {
1075         if (priv->cfg->bt_params)
1076                 iwlagn_bt_cancel_deferred_work(priv);
1077
1078         cancel_work_sync(&priv->run_time_calib_work);
1079         cancel_work_sync(&priv->beacon_update);
1080
1081         iwl_cancel_scan_deferred_work(priv);
1082
1083         cancel_work_sync(&priv->bt_full_concurrency);
1084         cancel_work_sync(&priv->bt_runtime_config);
1085         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1086
1087         del_timer_sync(&priv->statistics_periodic);
1088         del_timer_sync(&priv->ucode_trace);
1089 }
1090
1091 static int iwl_init_drv(struct iwl_priv *priv)
1092 {
1093         spin_lock_init(&priv->sta_lock);
1094
1095         mutex_init(&priv->mutex);
1096
1097         INIT_LIST_HEAD(&priv->calib_results);
1098
1099         priv->band = IEEE80211_BAND_2GHZ;
1100
1101         priv->plcp_delta_threshold =
1102                 priv->cfg->base_params->plcp_delta_threshold;
1103
1104         priv->iw_mode = NL80211_IFTYPE_STATION;
1105         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1106         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1107         priv->agg_tids_count = 0;
1108
1109         priv->ucode_owner = IWL_OWNERSHIP_DRIVER;
1110
1111         priv->rx_statistics_jiffies = jiffies;
1112
1113         /* Choose which receivers/antennas to use */
1114         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1115
1116         iwl_init_scan_params(priv);
1117
1118         /* init bt coex */
1119         if (priv->cfg->bt_params &&
1120             priv->cfg->bt_params->advanced_bt_coexist) {
1121                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1122                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1123                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1124                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1125                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1126                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1127         }
1128
1129         return 0;
1130 }
1131
1132 static void iwl_uninit_drv(struct iwl_priv *priv)
1133 {
1134         kfree(priv->scan_cmd);
1135         kfree(priv->beacon_cmd);
1136         kfree(rcu_dereference_raw(priv->noa_data));
1137         iwl_calib_free_results(priv);
1138 #ifdef CONFIG_IWLWIFI_DEBUGFS
1139         kfree(priv->wowlan_sram);
1140 #endif
1141 }
1142
1143 static void iwl_set_hw_params(struct iwl_priv *priv)
1144 {
1145         if (priv->cfg->ht_params)
1146                 priv->hw_params.use_rts_for_aggregation =
1147                         priv->cfg->ht_params->use_rts_for_aggregation;
1148
1149         /* Device-specific setup */
1150         priv->lib->set_hw_params(priv);
1151 }
1152
1153
1154
1155 /* show what optional capabilities we have */
1156 static void iwl_option_config(struct iwl_priv *priv)
1157 {
1158 #ifdef CONFIG_IWLWIFI_DEBUG
1159         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG enabled\n");
1160 #else
1161         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUG disabled\n");
1162 #endif
1163
1164 #ifdef CONFIG_IWLWIFI_DEBUGFS
1165         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS enabled\n");
1166 #else
1167         IWL_INFO(priv, "CONFIG_IWLWIFI_DEBUGFS disabled\n");
1168 #endif
1169
1170 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1171         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING enabled\n");
1172 #else
1173         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TRACING disabled\n");
1174 #endif
1175
1176 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1177         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE enabled\n");
1178 #else
1179         IWL_INFO(priv, "CONFIG_IWLWIFI_DEVICE_TESTMODE disabled\n");
1180 #endif
1181
1182 #ifdef CONFIG_IWLWIFI_P2P
1183         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P enabled\n");
1184 #else
1185         IWL_INFO(priv, "CONFIG_IWLWIFI_P2P disabled\n");
1186 #endif
1187 }
1188
1189 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
1190 {
1191         struct iwl_nvm_data *data = priv->nvm_data;
1192         char *debug_msg;
1193
1194         if (data->sku_cap_11n_enable &&
1195             !priv->cfg->ht_params) {
1196                 IWL_ERR(priv, "Invalid 11n configuration\n");
1197                 return -EINVAL;
1198         }
1199
1200         if (!data->sku_cap_11n_enable && !data->sku_cap_band_24GHz_enable &&
1201             !data->sku_cap_band_52GHz_enable) {
1202                 IWL_ERR(priv, "Invalid device sku\n");
1203                 return -EINVAL;
1204         }
1205
1206         debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
1207         IWL_DEBUG_INFO(priv, debug_msg,
1208                        data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
1209                        data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
1210                        data->sku_cap_11n_enable ? "" : "NOT", "enabled");
1211
1212         priv->hw_params.tx_chains_num =
1213                 num_of_ant(data->valid_tx_ant);
1214         if (priv->cfg->rx_with_siso_diversity)
1215                 priv->hw_params.rx_chains_num = 1;
1216         else
1217                 priv->hw_params.rx_chains_num =
1218                         num_of_ant(data->valid_rx_ant);
1219
1220         IWL_DEBUG_INFO(priv, "Valid Tx ant: 0x%X, Valid Rx ant: 0x%X\n",
1221                        data->valid_tx_ant,
1222                        data->valid_rx_ant);
1223
1224         return 0;
1225 }
1226
1227 static struct iwl_op_mode *iwl_op_mode_dvm_start(struct iwl_trans *trans,
1228                                                  const struct iwl_cfg *cfg,
1229                                                  const struct iwl_fw *fw,
1230                                                  struct dentry *dbgfs_dir)
1231 {
1232         struct iwl_priv *priv;
1233         struct ieee80211_hw *hw;
1234         struct iwl_op_mode *op_mode;
1235         u16 num_mac;
1236         u32 ucode_flags;
1237         struct iwl_trans_config trans_cfg = {};
1238         static const u8 no_reclaim_cmds[] = {
1239                 REPLY_RX_PHY_CMD,
1240                 REPLY_RX_MPDU_CMD,
1241                 REPLY_COMPRESSED_BA,
1242                 STATISTICS_NOTIFICATION,
1243                 REPLY_TX,
1244         };
1245         int i;
1246
1247         /************************
1248          * 1. Allocating HW data
1249          ************************/
1250         hw = iwl_alloc_all();
1251         if (!hw) {
1252                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1253                 goto out;
1254         }
1255
1256         op_mode = hw->priv;
1257         op_mode->ops = &iwl_dvm_ops;
1258         priv = IWL_OP_MODE_GET_DVM(op_mode);
1259         priv->trans = trans;
1260         priv->dev = trans->dev;
1261         priv->cfg = cfg;
1262         priv->fw = fw;
1263
1264         switch (priv->cfg->device_family) {
1265         case IWL_DEVICE_FAMILY_1000:
1266         case IWL_DEVICE_FAMILY_100:
1267                 priv->lib = &iwl1000_lib;
1268                 break;
1269         case IWL_DEVICE_FAMILY_2000:
1270         case IWL_DEVICE_FAMILY_105:
1271                 priv->lib = &iwl2000_lib;
1272                 break;
1273         case IWL_DEVICE_FAMILY_2030:
1274         case IWL_DEVICE_FAMILY_135:
1275                 priv->lib = &iwl2030_lib;
1276                 break;
1277         case IWL_DEVICE_FAMILY_5000:
1278                 priv->lib = &iwl5000_lib;
1279                 break;
1280         case IWL_DEVICE_FAMILY_5150:
1281                 priv->lib = &iwl5150_lib;
1282                 break;
1283         case IWL_DEVICE_FAMILY_6000:
1284         case IWL_DEVICE_FAMILY_6005:
1285         case IWL_DEVICE_FAMILY_6000i:
1286         case IWL_DEVICE_FAMILY_6050:
1287         case IWL_DEVICE_FAMILY_6150:
1288                 priv->lib = &iwl6000_lib;
1289                 break;
1290         case IWL_DEVICE_FAMILY_6030:
1291                 priv->lib = &iwl6030_lib;
1292                 break;
1293         default:
1294                 break;
1295         }
1296
1297         if (WARN_ON(!priv->lib))
1298                 goto out_free_hw;
1299
1300         /*
1301          * Populate the state variables that the transport layer needs
1302          * to know about.
1303          */
1304         trans_cfg.op_mode = op_mode;
1305         trans_cfg.no_reclaim_cmds = no_reclaim_cmds;
1306         trans_cfg.n_no_reclaim_cmds = ARRAY_SIZE(no_reclaim_cmds);
1307         trans_cfg.rx_buf_size_8k = iwlwifi_mod_params.amsdu_size_8K;
1308         if (!iwlwifi_mod_params.wd_disable)
1309                 trans_cfg.queue_watchdog_timeout =
1310                         priv->cfg->base_params->wd_timeout;
1311         else
1312                 trans_cfg.queue_watchdog_timeout = IWL_WATCHDOG_DISABLED;
1313         trans_cfg.command_names = iwl_dvm_cmd_strings;
1314         trans_cfg.cmd_fifo = IWLAGN_CMD_FIFO_NUM;
1315
1316         WARN_ON(sizeof(priv->transport_queue_stop) * BITS_PER_BYTE <
1317                 priv->cfg->base_params->num_of_queues);
1318
1319         ucode_flags = fw->ucode_capa.flags;
1320
1321 #ifndef CONFIG_IWLWIFI_P2P
1322         ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1323 #endif
1324
1325         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN) {
1326                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1327                 trans_cfg.cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1328         } else {
1329                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1330                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1331         }
1332
1333         /* Configure transport layer */
1334         iwl_trans_configure(priv->trans, &trans_cfg);
1335
1336         trans->rx_mpdu_cmd = REPLY_RX_MPDU_CMD;
1337         trans->rx_mpdu_cmd_hdr_size = sizeof(struct iwl_rx_mpdu_res_start);
1338
1339         /* At this point both hw and priv are allocated. */
1340
1341         SET_IEEE80211_DEV(priv->hw, priv->trans->dev);
1342
1343         iwl_option_config(priv);
1344
1345         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1346
1347         /* is antenna coupling more than 35dB ? */
1348         priv->bt_ant_couple_ok =
1349                 (iwlwifi_mod_params.ant_coupling >
1350                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1351                         true : false;
1352
1353         /* enable/disable bt channel inhibition */
1354         priv->bt_ch_announce = iwlwifi_mod_params.bt_ch_announce;
1355         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1356                        (priv->bt_ch_announce) ? "On" : "Off");
1357
1358         /* these spin locks will be used in apm_ops.init and EEPROM access
1359          * we should init now
1360          */
1361         spin_lock_init(&priv->statistics.lock);
1362
1363         /***********************
1364          * 2. Read REV register
1365          ***********************/
1366         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1367                 priv->cfg->name, priv->trans->hw_rev);
1368
1369         if (iwl_trans_start_hw(priv->trans))
1370                 goto out_free_hw;
1371
1372         /* Read the EEPROM */
1373         if (iwl_read_eeprom(priv->trans, &priv->eeprom_blob,
1374                             &priv->eeprom_blob_size)) {
1375                 IWL_ERR(priv, "Unable to init EEPROM\n");
1376                 goto out_free_hw;
1377         }
1378
1379         /* Reset chip to save power until we load uCode during "up". */
1380         iwl_trans_stop_hw(priv->trans, false);
1381
1382         priv->nvm_data = iwl_parse_eeprom_data(priv->trans->dev, priv->cfg,
1383                                                   priv->eeprom_blob,
1384                                                   priv->eeprom_blob_size);
1385         if (!priv->nvm_data)
1386                 goto out_free_eeprom_blob;
1387
1388         if (iwl_nvm_check_version(priv->nvm_data, priv->trans))
1389                 goto out_free_eeprom;
1390
1391         if (iwl_eeprom_init_hw_params(priv))
1392                 goto out_free_eeprom;
1393
1394         /* extract MAC Address */
1395         memcpy(priv->addresses[0].addr, priv->nvm_data->hw_addr, ETH_ALEN);
1396         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1397         priv->hw->wiphy->addresses = priv->addresses;
1398         priv->hw->wiphy->n_addresses = 1;
1399         num_mac = priv->nvm_data->n_hw_addrs;
1400         if (num_mac > 1) {
1401                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1402                        ETH_ALEN);
1403                 priv->addresses[1].addr[5]++;
1404                 priv->hw->wiphy->n_addresses++;
1405         }
1406
1407         /************************
1408          * 4. Setup HW constants
1409          ************************/
1410         iwl_set_hw_params(priv);
1411
1412         if (!(priv->nvm_data->sku_cap_ipan_enable)) {
1413                 IWL_DEBUG_INFO(priv, "Your EEPROM disabled PAN");
1414                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1415                 /*
1416                  * if not PAN, then don't support P2P -- might be a uCode
1417                  * packaging bug or due to the eeprom check above
1418                  */
1419                 ucode_flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1420                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1421                 trans_cfg.cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1422
1423                 /* Configure transport layer again*/
1424                 iwl_trans_configure(priv->trans, &trans_cfg);
1425         }
1426
1427         /*******************
1428          * 5. Setup priv
1429          *******************/
1430         for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
1431                 priv->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
1432                 if (i < IWLAGN_FIRST_AMPDU_QUEUE &&
1433                     i != IWL_DEFAULT_CMD_QUEUE_NUM &&
1434                     i != IWL_IPAN_CMD_QUEUE_NUM)
1435                         priv->queue_to_mac80211[i] = i;
1436                 atomic_set(&priv->queue_stop_count[i], 0);
1437         }
1438
1439         if (iwl_init_drv(priv))
1440                 goto out_free_eeprom;
1441
1442         /* At this point both hw and priv are initialized. */
1443
1444         /********************
1445          * 6. Setup services
1446          ********************/
1447         iwl_setup_deferred_work(priv);
1448         iwl_setup_rx_handlers(priv);
1449         iwl_testmode_init(priv);
1450
1451         iwl_power_initialize(priv);
1452         iwl_tt_initialize(priv);
1453
1454         snprintf(priv->hw->wiphy->fw_version,
1455                  sizeof(priv->hw->wiphy->fw_version),
1456                  "%s", fw->fw_version);
1457
1458         priv->new_scan_threshold_behaviour =
1459                 !!(ucode_flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1460
1461         priv->phy_calib_chain_noise_reset_cmd =
1462                 fw->ucode_capa.standard_phy_calibration_size;
1463         priv->phy_calib_chain_noise_gain_cmd =
1464                 fw->ucode_capa.standard_phy_calibration_size + 1;
1465
1466         /* initialize all valid contexts */
1467         iwl_init_context(priv, ucode_flags);
1468
1469         /**************************************************
1470          * This is still part of probe() in a sense...
1471          *
1472          * 7. Setup and register with mac80211 and debugfs
1473          **************************************************/
1474         if (iwlagn_mac_setup_register(priv, &fw->ucode_capa))
1475                 goto out_destroy_workqueue;
1476
1477         if (iwl_dbgfs_register(priv, dbgfs_dir))
1478                 goto out_mac80211_unregister;
1479
1480         return op_mode;
1481
1482 out_mac80211_unregister:
1483         iwlagn_mac_unregister(priv);
1484 out_destroy_workqueue:
1485         iwl_tt_exit(priv);
1486         iwl_testmode_free(priv);
1487         iwl_cancel_deferred_work(priv);
1488         destroy_workqueue(priv->workqueue);
1489         priv->workqueue = NULL;
1490         iwl_uninit_drv(priv);
1491 out_free_eeprom_blob:
1492         kfree(priv->eeprom_blob);
1493 out_free_eeprom:
1494         iwl_free_nvm_data(priv->nvm_data);
1495 out_free_hw:
1496         ieee80211_free_hw(priv->hw);
1497 out:
1498         op_mode = NULL;
1499         return op_mode;
1500 }
1501
1502 static void iwl_op_mode_dvm_stop(struct iwl_op_mode *op_mode)
1503 {
1504         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1505
1506         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1507
1508         iwl_testmode_free(priv);
1509         iwlagn_mac_unregister(priv);
1510
1511         iwl_tt_exit(priv);
1512
1513         kfree(priv->eeprom_blob);
1514         iwl_free_nvm_data(priv->nvm_data);
1515
1516         /*netif_stop_queue(dev); */
1517         flush_workqueue(priv->workqueue);
1518
1519         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1520          * priv->workqueue... so we can't take down the workqueue
1521          * until now... */
1522         destroy_workqueue(priv->workqueue);
1523         priv->workqueue = NULL;
1524
1525         iwl_uninit_drv(priv);
1526
1527         dev_kfree_skb(priv->beacon_skb);
1528
1529         iwl_trans_stop_hw(priv->trans, true);
1530         ieee80211_free_hw(priv->hw);
1531 }
1532
1533 static const char * const desc_lookup_text[] = {
1534         "OK",
1535         "FAIL",
1536         "BAD_PARAM",
1537         "BAD_CHECKSUM",
1538         "NMI_INTERRUPT_WDG",
1539         "SYSASSERT",
1540         "FATAL_ERROR",
1541         "BAD_COMMAND",
1542         "HW_ERROR_TUNE_LOCK",
1543         "HW_ERROR_TEMPERATURE",
1544         "ILLEGAL_CHAN_FREQ",
1545         "VCC_NOT_STABLE",
1546         "FH_ERROR",
1547         "NMI_INTERRUPT_HOST",
1548         "NMI_INTERRUPT_ACTION_PT",
1549         "NMI_INTERRUPT_UNKNOWN",
1550         "UCODE_VERSION_MISMATCH",
1551         "HW_ERROR_ABS_LOCK",
1552         "HW_ERROR_CAL_LOCK_FAIL",
1553         "NMI_INTERRUPT_INST_ACTION_PT",
1554         "NMI_INTERRUPT_DATA_ACTION_PT",
1555         "NMI_TRM_HW_ER",
1556         "NMI_INTERRUPT_TRM",
1557         "NMI_INTERRUPT_BREAK_POINT",
1558         "DEBUG_0",
1559         "DEBUG_1",
1560         "DEBUG_2",
1561         "DEBUG_3",
1562 };
1563
1564 static struct { char *name; u8 num; } advanced_lookup[] = {
1565         { "NMI_INTERRUPT_WDG", 0x34 },
1566         { "SYSASSERT", 0x35 },
1567         { "UCODE_VERSION_MISMATCH", 0x37 },
1568         { "BAD_COMMAND", 0x38 },
1569         { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1570         { "FATAL_ERROR", 0x3D },
1571         { "NMI_TRM_HW_ERR", 0x46 },
1572         { "NMI_INTERRUPT_TRM", 0x4C },
1573         { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1574         { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1575         { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1576         { "NMI_INTERRUPT_HOST", 0x66 },
1577         { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1578         { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1579         { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1580         { "ADVANCED_SYSASSERT", 0 },
1581 };
1582
1583 static const char *desc_lookup(u32 num)
1584 {
1585         int i;
1586         int max = ARRAY_SIZE(desc_lookup_text);
1587
1588         if (num < max)
1589                 return desc_lookup_text[num];
1590
1591         max = ARRAY_SIZE(advanced_lookup) - 1;
1592         for (i = 0; i < max; i++) {
1593                 if (advanced_lookup[i].num == num)
1594                         break;
1595         }
1596         return advanced_lookup[i].name;
1597 }
1598
1599 #define ERROR_START_OFFSET  (1 * sizeof(u32))
1600 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
1601
1602 static void iwl_dump_nic_error_log(struct iwl_priv *priv)
1603 {
1604         struct iwl_trans *trans = priv->trans;
1605         u32 base;
1606         struct iwl_error_event_table table;
1607
1608         base = priv->device_pointers.error_event_table;
1609         if (priv->cur_ucode == IWL_UCODE_INIT) {
1610                 if (!base)
1611                         base = priv->fw->init_errlog_ptr;
1612         } else {
1613                 if (!base)
1614                         base = priv->fw->inst_errlog_ptr;
1615         }
1616
1617         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1618                 IWL_ERR(priv,
1619                         "Not valid error log pointer 0x%08X for %s uCode\n",
1620                         base,
1621                         (priv->cur_ucode == IWL_UCODE_INIT)
1622                                         ? "Init" : "RT");
1623                 return;
1624         }
1625
1626         /*TODO: Update dbgfs with ISR error stats obtained below */
1627         iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
1628
1629         if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1630                 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
1631                 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
1632                         priv->status, table.valid);
1633         }
1634
1635         trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
1636                                       table.data1, table.data2, table.line,
1637                                       table.blink1, table.blink2, table.ilink1,
1638                                       table.ilink2, table.bcon_time, table.gp1,
1639                                       table.gp2, table.gp3, table.ucode_ver,
1640                                       table.hw_ver, table.brd_ver);
1641         IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1642                 desc_lookup(table.error_id));
1643         IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1644         IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1645         IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1646         IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1647         IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1648         IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1649         IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1650         IWL_ERR(priv, "0x%08X | line\n", table.line);
1651         IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1652         IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1653         IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1654         IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1655         IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1656         IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1657         IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1658         IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1659         IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1660         IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1661         IWL_ERR(priv, "0x%08X | isr0\n", table.isr0);
1662         IWL_ERR(priv, "0x%08X | isr1\n", table.isr1);
1663         IWL_ERR(priv, "0x%08X | isr2\n", table.isr2);
1664         IWL_ERR(priv, "0x%08X | isr3\n", table.isr3);
1665         IWL_ERR(priv, "0x%08X | isr4\n", table.isr4);
1666         IWL_ERR(priv, "0x%08X | isr_pref\n", table.isr_pref);
1667         IWL_ERR(priv, "0x%08X | wait_event\n", table.wait_event);
1668         IWL_ERR(priv, "0x%08X | l2p_control\n", table.l2p_control);
1669         IWL_ERR(priv, "0x%08X | l2p_duration\n", table.l2p_duration);
1670         IWL_ERR(priv, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
1671         IWL_ERR(priv, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
1672         IWL_ERR(priv, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
1673         IWL_ERR(priv, "0x%08X | timestamp\n", table.u_timestamp);
1674         IWL_ERR(priv, "0x%08X | flow_handler\n", table.flow_handler);
1675 }
1676
1677 #define EVENT_START_OFFSET  (4 * sizeof(u32))
1678
1679 /**
1680  * iwl_print_event_log - Dump error event log to syslog
1681  *
1682  */
1683 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1684                                u32 num_events, u32 mode,
1685                                int pos, char **buf, size_t bufsz)
1686 {
1687         u32 i;
1688         u32 base;       /* SRAM byte address of event log header */
1689         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1690         u32 ptr;        /* SRAM byte address of log data */
1691         u32 ev, time, data; /* event log data */
1692         unsigned long reg_flags;
1693
1694         struct iwl_trans *trans = priv->trans;
1695
1696         if (num_events == 0)
1697                 return pos;
1698
1699         base = priv->device_pointers.log_event_table;
1700         if (priv->cur_ucode == IWL_UCODE_INIT) {
1701                 if (!base)
1702                         base = priv->fw->init_evtlog_ptr;
1703         } else {
1704                 if (!base)
1705                         base = priv->fw->inst_evtlog_ptr;
1706         }
1707
1708         if (mode == 0)
1709                 event_size = 2 * sizeof(u32);
1710         else
1711                 event_size = 3 * sizeof(u32);
1712
1713         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1714
1715         /* Make sure device is powered up for SRAM reads */
1716         if (!iwl_trans_grab_nic_access(trans, false, &reg_flags))
1717                 return pos;
1718
1719         /* Set starting address; reads will auto-increment */
1720         iwl_write32(trans, HBUS_TARG_MEM_RADDR, ptr);
1721
1722         /* "time" is actually "data" for mode 0 (no timestamp).
1723         * place event id # at far right for easier visual parsing. */
1724         for (i = 0; i < num_events; i++) {
1725                 ev = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1726                 time = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1727                 if (mode == 0) {
1728                         /* data, ev */
1729                         if (bufsz) {
1730                                 pos += scnprintf(*buf + pos, bufsz - pos,
1731                                                 "EVT_LOG:0x%08x:%04u\n",
1732                                                 time, ev);
1733                         } else {
1734                                 trace_iwlwifi_dev_ucode_event(trans->dev, 0,
1735                                         time, ev);
1736                                 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1737                                         time, ev);
1738                         }
1739                 } else {
1740                         data = iwl_read32(trans, HBUS_TARG_MEM_RDAT);
1741                         if (bufsz) {
1742                                 pos += scnprintf(*buf + pos, bufsz - pos,
1743                                                 "EVT_LOGT:%010u:0x%08x:%04u\n",
1744                                                  time, data, ev);
1745                         } else {
1746                                 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1747                                         time, data, ev);
1748                                 trace_iwlwifi_dev_ucode_event(trans->dev, time,
1749                                         data, ev);
1750                         }
1751                 }
1752         }
1753
1754         /* Allow device to power down */
1755         iwl_trans_release_nic_access(trans, &reg_flags);
1756         return pos;
1757 }
1758
1759 /**
1760  * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1761  */
1762 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1763                                     u32 num_wraps, u32 next_entry,
1764                                     u32 size, u32 mode,
1765                                     int pos, char **buf, size_t bufsz)
1766 {
1767         /*
1768          * display the newest DEFAULT_LOG_ENTRIES entries
1769          * i.e the entries just before the next ont that uCode would fill.
1770          */
1771         if (num_wraps) {
1772                 if (next_entry < size) {
1773                         pos = iwl_print_event_log(priv,
1774                                                 capacity - (size - next_entry),
1775                                                 size - next_entry, mode,
1776                                                 pos, buf, bufsz);
1777                         pos = iwl_print_event_log(priv, 0,
1778                                                   next_entry, mode,
1779                                                   pos, buf, bufsz);
1780                 } else
1781                         pos = iwl_print_event_log(priv, next_entry - size,
1782                                                   size, mode, pos, buf, bufsz);
1783         } else {
1784                 if (next_entry < size) {
1785                         pos = iwl_print_event_log(priv, 0, next_entry,
1786                                                   mode, pos, buf, bufsz);
1787                 } else {
1788                         pos = iwl_print_event_log(priv, next_entry - size,
1789                                                   size, mode, pos, buf, bufsz);
1790                 }
1791         }
1792         return pos;
1793 }
1794
1795 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1796
1797 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1798                             char **buf)
1799 {
1800         u32 base;       /* SRAM byte address of event log header */
1801         u32 capacity;   /* event log capacity in # entries */
1802         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
1803         u32 num_wraps;  /* # times uCode wrapped to top of log */
1804         u32 next_entry; /* index of next entry to be written by uCode */
1805         u32 size;       /* # entries that we'll print */
1806         u32 logsize;
1807         int pos = 0;
1808         size_t bufsz = 0;
1809         struct iwl_trans *trans = priv->trans;
1810
1811         base = priv->device_pointers.log_event_table;
1812         if (priv->cur_ucode == IWL_UCODE_INIT) {
1813                 logsize = priv->fw->init_evtlog_size;
1814                 if (!base)
1815                         base = priv->fw->init_evtlog_ptr;
1816         } else {
1817                 logsize = priv->fw->inst_evtlog_size;
1818                 if (!base)
1819                         base = priv->fw->inst_evtlog_ptr;
1820         }
1821
1822         if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1823                 IWL_ERR(priv,
1824                         "Invalid event log pointer 0x%08X for %s uCode\n",
1825                         base,
1826                         (priv->cur_ucode == IWL_UCODE_INIT)
1827                                         ? "Init" : "RT");
1828                 return -EINVAL;
1829         }
1830
1831         /* event log header */
1832         capacity = iwl_trans_read_mem32(trans, base);
1833         mode = iwl_trans_read_mem32(trans, base + (1 * sizeof(u32)));
1834         num_wraps = iwl_trans_read_mem32(trans, base + (2 * sizeof(u32)));
1835         next_entry = iwl_trans_read_mem32(trans, base + (3 * sizeof(u32)));
1836
1837         if (capacity > logsize) {
1838                 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d "
1839                         "entries\n", capacity, logsize);
1840                 capacity = logsize;
1841         }
1842
1843         if (next_entry > logsize) {
1844                 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1845                         next_entry, logsize);
1846                 next_entry = logsize;
1847         }
1848
1849         size = num_wraps ? capacity : next_entry;
1850
1851         /* bail out if nothing in log */
1852         if (size == 0) {
1853                 IWL_ERR(trans, "Start IWL Event Log Dump: nothing in log\n");
1854                 return pos;
1855         }
1856
1857 #ifdef CONFIG_IWLWIFI_DEBUG
1858         if (!(iwl_have_debug_level(IWL_DL_FW_ERRORS)) && !full_log)
1859                 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1860                         ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1861 #else
1862         size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1863                 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1864 #endif
1865         IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1866                 size);
1867
1868 #ifdef CONFIG_IWLWIFI_DEBUG
1869         if (buf) {
1870                 if (full_log)
1871                         bufsz = capacity * 48;
1872                 else
1873                         bufsz = size * 48;
1874                 *buf = kmalloc(bufsz, GFP_KERNEL);
1875                 if (!*buf)
1876                         return -ENOMEM;
1877         }
1878         if (iwl_have_debug_level(IWL_DL_FW_ERRORS) || full_log) {
1879                 /*
1880                  * if uCode has wrapped back to top of log,
1881                  * start at the oldest entry,
1882                  * i.e the next one that uCode would fill.
1883                  */
1884                 if (num_wraps)
1885                         pos = iwl_print_event_log(priv, next_entry,
1886                                                 capacity - next_entry, mode,
1887                                                 pos, buf, bufsz);
1888                 /* (then/else) start at top of log */
1889                 pos = iwl_print_event_log(priv, 0,
1890                                           next_entry, mode, pos, buf, bufsz);
1891         } else
1892                 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1893                                                 next_entry, size, mode,
1894                                                 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 #endif
1900         return pos;
1901 }
1902
1903 static void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand)
1904 {
1905         unsigned int reload_msec;
1906         unsigned long reload_jiffies;
1907
1908 #ifdef CONFIG_IWLWIFI_DEBUG
1909         if (iwl_have_debug_level(IWL_DL_FW_ERRORS))
1910                 iwl_print_rx_config_cmd(priv, IWL_RXON_CTX_BSS);
1911 #endif
1912
1913         /* uCode is no longer loaded. */
1914         priv->ucode_loaded = false;
1915
1916         /* Set the FW error flag -- cleared on iwl_down */
1917         set_bit(STATUS_FW_ERROR, &priv->status);
1918
1919         iwl_abort_notification_waits(&priv->notif_wait);
1920
1921         /* Keep the restart process from trying to send host
1922          * commands by clearing the ready bit */
1923         clear_bit(STATUS_READY, &priv->status);
1924
1925         if (!ondemand) {
1926                 /*
1927                  * If firmware keep reloading, then it indicate something
1928                  * serious wrong and firmware having problem to recover
1929                  * from it. Instead of keep trying which will fill the syslog
1930                  * and hang the system, let's just stop it
1931                  */
1932                 reload_jiffies = jiffies;
1933                 reload_msec = jiffies_to_msecs((long) reload_jiffies -
1934                                         (long) priv->reload_jiffies);
1935                 priv->reload_jiffies = reload_jiffies;
1936                 if (reload_msec <= IWL_MIN_RELOAD_DURATION) {
1937                         priv->reload_count++;
1938                         if (priv->reload_count >= IWL_MAX_CONTINUE_RELOAD_CNT) {
1939                                 IWL_ERR(priv, "BUG_ON, Stop restarting\n");
1940                                 return;
1941                         }
1942                 } else
1943                         priv->reload_count = 0;
1944         }
1945
1946         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1947                 if (iwlwifi_mod_params.restart_fw) {
1948                         IWL_DEBUG_FW_ERRORS(priv,
1949                                   "Restarting adapter due to uCode error.\n");
1950                         queue_work(priv->workqueue, &priv->restart);
1951                 } else
1952                         IWL_DEBUG_FW_ERRORS(priv,
1953                                   "Detected FW error, but not restarting\n");
1954         }
1955 }
1956
1957 static void iwl_nic_error(struct iwl_op_mode *op_mode)
1958 {
1959         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1960
1961         IWL_ERR(priv, "Loaded firmware version: %s\n",
1962                 priv->fw->fw_version);
1963
1964         iwl_dump_nic_error_log(priv);
1965         iwl_dump_nic_event_log(priv, false, NULL);
1966
1967         iwlagn_fw_error(priv, false);
1968 }
1969
1970 static void iwl_cmd_queue_full(struct iwl_op_mode *op_mode)
1971 {
1972         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1973
1974         if (!iwl_check_for_ct_kill(priv)) {
1975                 IWL_ERR(priv, "Restarting adapter queue is full\n");
1976                 iwlagn_fw_error(priv, false);
1977         }
1978 }
1979
1980 #define EEPROM_RF_CONFIG_TYPE_MAX      0x3
1981
1982 static void iwl_nic_config(struct iwl_op_mode *op_mode)
1983 {
1984         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
1985
1986         /* SKU Control */
1987         iwl_trans_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 (priv->nvm_data->radio_cfg_type <= EEPROM_RF_CONFIG_TYPE_MAX) {
1997                 u32 reg_val =
1998                         priv->nvm_data->radio_cfg_type <<
1999                                 CSR_HW_IF_CONFIG_REG_POS_PHY_TYPE |
2000                         priv->nvm_data->radio_cfg_step <<
2001                                 CSR_HW_IF_CONFIG_REG_POS_PHY_STEP |
2002                         priv->nvm_data->radio_cfg_dash <<
2003                                 CSR_HW_IF_CONFIG_REG_POS_PHY_DASH;
2004
2005                 iwl_trans_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,
2009                                         reg_val);
2010
2011                 IWL_INFO(priv, "Radio type=0x%x-0x%x-0x%x\n",
2012                          priv->nvm_data->radio_cfg_type,
2013                          priv->nvm_data->radio_cfg_step,
2014                          priv->nvm_data->radio_cfg_dash);
2015         } else {
2016                 WARN_ON(1);
2017         }
2018
2019         /* set CSR_HW_CONFIG_REG for uCode use */
2020         iwl_set_bit(priv->trans, CSR_HW_IF_CONFIG_REG,
2021                     CSR_HW_IF_CONFIG_REG_BIT_RADIO_SI |
2022                     CSR_HW_IF_CONFIG_REG_BIT_MAC_SI);
2023
2024         /* W/A : NIC is stuck in a reset state after Early PCIe power off
2025          * (PCIe power is lost before PERST# is asserted),
2026          * causing ME FW to lose ownership and not being able to obtain it back.
2027          */
2028         iwl_set_bits_mask_prph(priv->trans, APMG_PS_CTRL_REG,
2029                                APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS,
2030                                ~APMG_PS_CTRL_EARLY_PWR_OFF_RESET_DIS);
2031
2032         if (priv->lib->nic_config)
2033                 priv->lib->nic_config(priv);
2034 }
2035
2036 static void iwl_wimax_active(struct iwl_op_mode *op_mode)
2037 {
2038         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2039
2040         clear_bit(STATUS_READY, &priv->status);
2041         IWL_ERR(priv, "RF is used by WiMAX\n");
2042 }
2043
2044 static void iwl_stop_sw_queue(struct iwl_op_mode *op_mode, int queue)
2045 {
2046         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2047         int mq = priv->queue_to_mac80211[queue];
2048
2049         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2050                 return;
2051
2052         if (atomic_inc_return(&priv->queue_stop_count[mq]) > 1) {
2053                 IWL_DEBUG_TX_QUEUES(priv,
2054                         "queue %d (mac80211 %d) already stopped\n",
2055                         queue, mq);
2056                 return;
2057         }
2058
2059         set_bit(mq, &priv->transport_queue_stop);
2060         ieee80211_stop_queue(priv->hw, mq);
2061 }
2062
2063 static void iwl_wake_sw_queue(struct iwl_op_mode *op_mode, int queue)
2064 {
2065         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2066         int mq = priv->queue_to_mac80211[queue];
2067
2068         if (WARN_ON_ONCE(mq == IWL_INVALID_MAC80211_QUEUE))
2069                 return;
2070
2071         if (atomic_dec_return(&priv->queue_stop_count[mq]) > 0) {
2072                 IWL_DEBUG_TX_QUEUES(priv,
2073                         "queue %d (mac80211 %d) already awake\n",
2074                         queue, mq);
2075                 return;
2076         }
2077
2078         clear_bit(mq, &priv->transport_queue_stop);
2079
2080         if (!priv->passive_no_rx)
2081                 ieee80211_wake_queue(priv->hw, mq);
2082 }
2083
2084 void iwlagn_lift_passive_no_rx(struct iwl_priv *priv)
2085 {
2086         int mq;
2087
2088         if (!priv->passive_no_rx)
2089                 return;
2090
2091         for (mq = 0; mq < IWLAGN_FIRST_AMPDU_QUEUE; mq++) {
2092                 if (!test_bit(mq, &priv->transport_queue_stop)) {
2093                         IWL_DEBUG_TX_QUEUES(priv, "Wake queue %d", mq);
2094                         ieee80211_wake_queue(priv->hw, mq);
2095                 } else {
2096                         IWL_DEBUG_TX_QUEUES(priv, "Don't wake queue %d", mq);
2097                 }
2098         }
2099
2100         priv->passive_no_rx = false;
2101 }
2102
2103 static void iwl_free_skb(struct iwl_op_mode *op_mode, struct sk_buff *skb)
2104 {
2105         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2106         struct ieee80211_tx_info *info;
2107
2108         info = IEEE80211_SKB_CB(skb);
2109         iwl_trans_free_tx_cmd(priv->trans, info->driver_data[1]);
2110         ieee80211_free_txskb(priv->hw, skb);
2111 }
2112
2113 static void iwl_set_hw_rfkill_state(struct iwl_op_mode *op_mode, bool state)
2114 {
2115         struct iwl_priv *priv = IWL_OP_MODE_GET_DVM(op_mode);
2116
2117         if (state)
2118                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2119         else
2120                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2121
2122         wiphy_rfkill_set_hw_state(priv->hw->wiphy, state);
2123 }
2124
2125 static const struct iwl_op_mode_ops iwl_dvm_ops = {
2126         .start = iwl_op_mode_dvm_start,
2127         .stop = iwl_op_mode_dvm_stop,
2128         .rx = iwl_rx_dispatch,
2129         .queue_full = iwl_stop_sw_queue,
2130         .queue_not_full = iwl_wake_sw_queue,
2131         .hw_rf_kill = iwl_set_hw_rfkill_state,
2132         .free_skb = iwl_free_skb,
2133         .nic_error = iwl_nic_error,
2134         .cmd_queue_full = iwl_cmd_queue_full,
2135         .nic_config = iwl_nic_config,
2136         .wimax_active = iwl_wimax_active,
2137 };
2138
2139 /*****************************************************************************
2140  *
2141  * driver and module entry point
2142  *
2143  *****************************************************************************/
2144 static int __init iwl_init(void)
2145 {
2146
2147         int ret;
2148
2149         ret = iwlagn_rate_control_register();
2150         if (ret) {
2151                 pr_err("Unable to register rate control algorithm: %d\n", ret);
2152                 return ret;
2153         }
2154
2155         ret = iwl_opmode_register("iwldvm", &iwl_dvm_ops);
2156         if (ret) {
2157                 pr_err("Unable to register op_mode: %d\n", ret);
2158                 iwlagn_rate_control_unregister();
2159         }
2160
2161         return ret;
2162 }
2163 module_init(iwl_init);
2164
2165 static void __exit iwl_exit(void)
2166 {
2167         iwl_opmode_deregister("iwldvm");
2168         iwlagn_rate_control_unregister();
2169 }
2170 module_exit(iwl_exit);