drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  *  Intel Linux Wireless <ilw@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29 #include <linux/kernel.h>
  30 #include <linux/module.h>
  31 #include <linux/init.h>
  32 #include <linux/slab.h>
  33 #include <linux/delay.h>
  34 #include <linux/sched.h>
  35 #include <linux/skbuff.h>
  36 #include <linux/netdevice.h>
  37 #include <linux/firmware.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/if_arp.h>
  40
  41 #include <net/mac80211.h>
  42
  43 #include <asm/div64.h>
  44
  45 #include "iwl-eeprom.h"
  46 #include "iwl-dev.h"
  47 #include "iwl-core.h"
  48 #include "iwl-io.h"
  49 #include "iwl-agn-calib.h"
  50 #include "iwl-agn.h"
  51 #include "iwl-shared.h"
  52 #include "iwl-bus.h"
  53 #include "iwl-trans.h"
  54
  55 /******************************************************************************
  56  *
  57  * module boiler plate
  58  *
  59  ******************************************************************************/
  60
  61 /*
  62  * module name, copyright, version, etc.
  63  */
  64 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  65
  66 #ifdef CONFIG_IWLWIFI_DEBUG
  67 #define VD "d"
  68 #else
  69 #define VD
  70 #endif
  71
  72 #define DRV_VERSION     IWLWIFI_VERSION VD
  73
  74
  75 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  76 MODULE_VERSION(DRV_VERSION);
  77 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
  78 MODULE_LICENSE("GPL");
  79 MODULE_ALIAS("iwlagn");
  80
  81 void iwl_update_chain_flags(struct iwl_priv *priv)
  82 {
  83         struct iwl_rxon_context *ctx;
  84
  85         for_each_context(priv, ctx) {
  86                 iwlagn_set_rxon_chain(priv, ctx);
  87                 if (ctx->active.rx_chain != ctx->staging.rx_chain)
  88                         iwlagn_commit_rxon(priv, ctx);
  89         }
  90 }
  91
  92 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
  93 static void iwl_set_beacon_tim(struct iwl_priv *priv,
  94                                struct iwl_tx_beacon_cmd *tx_beacon_cmd,
  95                                u8 *beacon, u32 frame_size)
  96 {
  97         u16 tim_idx;
  98         struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
  99
 100         /*
 101          * The index is relative to frame start but we start looking at the
 102          * variable-length part of the beacon.
 103          */
 104         tim_idx = mgmt->u.beacon.variable - beacon;
 105
 106         /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
 107         while ((tim_idx < (frame_size - 2)) &&
 108                         (beacon[tim_idx] != WLAN_EID_TIM))
 109                 tim_idx += beacon[tim_idx+1] + 2;
 110
 111         /* If TIM field was found, set variables */
 112         if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
 113                 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
 114                 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
 115         } else
 116                 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
 117 }
 118
 119 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
 120 {
 121         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 122         struct iwl_host_cmd cmd = {
 123                 .id = REPLY_TX_BEACON,
 124                 .flags = CMD_SYNC,
 125         };
 126         struct ieee80211_tx_info *info;
 127         u32 frame_size;
 128         u32 rate_flags;
 129         u32 rate;
 130
 131         /*
 132          * We have to set up the TX command, the TX Beacon command, and the
 133          * beacon contents.
 134          */
 135
 136         lockdep_assert_held(&priv->shrd->mutex);
 137
 138         if (!priv->beacon_ctx) {
 139                 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
 140                 return 0;
 141         }
 142
 143         if (WARN_ON(!priv->beacon_skb))
 144                 return -EINVAL;
 145
 146         /* Allocate beacon command */
 147         if (!priv->beacon_cmd)
 148                 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
 149         tx_beacon_cmd = priv->beacon_cmd;
 150         if (!tx_beacon_cmd)
 151                 return -ENOMEM;
 152
 153         frame_size = priv->beacon_skb->len;
 154
 155         /* Set up TX command fields */
 156         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 157         tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
 158         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 159         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 160                 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
 161
 162         /* Set up TX beacon command fields */
 163         iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
 164                            frame_size);
 165
 166         /* Set up packet rate and flags */
 167         info = IEEE80211_SKB_CB(priv->beacon_skb);
 168
 169         /*
 170          * Let's set up the rate at least somewhat correctly;
 171          * it will currently not actually be used by the uCode,
 172          * it uses the broadcast station's rate instead.
 173          */
 174         if (info->control.rates[0].idx < 0 ||
 175             info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
 176                 rate = 0;
 177         else
 178                 rate = info->control.rates[0].idx;
 179
 180         priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
 181                                               hw_params(priv).valid_tx_ant);
 182         rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
 183
 184         /* In mac80211, rates for 5 GHz start at 0 */
 185         if (info->band == IEEE80211_BAND_5GHZ)
 186                 rate += IWL_FIRST_OFDM_RATE;
 187         else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
 188                 rate_flags |= RATE_MCS_CCK_MSK;
 189
 190         tx_beacon_cmd->tx.rate_n_flags =
 191                         iwl_hw_set_rate_n_flags(rate, rate_flags);
 192
 193         /* Submit command */
 194         cmd.len[0] = sizeof(*tx_beacon_cmd);
 195         cmd.data[0] = tx_beacon_cmd;
 196         cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
 197         cmd.len[1] = frame_size;
 198         cmd.data[1] = priv->beacon_skb->data;
 199         cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
 200
 201         return iwl_trans_send_cmd(trans(priv), &cmd);
 202 }
 203
 204 static void iwl_bg_beacon_update(struct work_struct *work)
 205 {
 206         struct iwl_priv *priv =
 207                 container_of(work, struct iwl_priv, beacon_update);
 208         struct sk_buff *beacon;
 209
 210         mutex_lock(&priv->shrd->mutex);
 211         if (!priv->beacon_ctx) {
 212                 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
 213                 goto out;
 214         }
 215
 216         if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
 217                 /*
 218                  * The ucode will send beacon notifications even in
 219                  * IBSS mode, but we don't want to process them. But
 220                  * we need to defer the type check to here due to
 221                  * requiring locking around the beacon_ctx access.
 222                  */
 223                 goto out;
 224         }
 225
 226         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 227         beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
 228         if (!beacon) {
 229                 IWL_ERR(priv, "update beacon failed -- keeping old\n");
 230                 goto out;
 231         }
 232
 233         /* new beacon skb is allocated every time; dispose previous.*/
 234         dev_kfree_skb(priv->beacon_skb);
 235
 236         priv->beacon_skb = beacon;
 237
 238         iwlagn_send_beacon_cmd(priv);
 239  out:
 240         mutex_unlock(&priv->shrd->mutex);
 241 }
 242
 243 static void iwl_bg_bt_runtime_config(struct work_struct *work)
 244 {
 245         struct iwl_priv *priv =
 246                 container_of(work, struct iwl_priv, bt_runtime_config);
 247
 248         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 249                 return;
 250
 251         /* dont send host command if rf-kill is on */
 252         if (!iwl_is_ready_rf(priv->shrd))
 253                 return;
 254         iwlagn_send_advance_bt_config(priv);
 255 }
 256
 257 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
 258 {
 259         struct iwl_priv *priv =
 260                 container_of(work, struct iwl_priv, bt_full_concurrency);
 261         struct iwl_rxon_context *ctx;
 262
 263         mutex_lock(&priv->shrd->mutex);
 264
 265         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 266                 goto out;
 267
 268         /* dont send host command if rf-kill is on */
 269         if (!iwl_is_ready_rf(priv->shrd))
 270                 goto out;
 271
 272         IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
 273                        priv->bt_full_concurrent ?
 274                        "full concurrency" : "3-wire");
 275
 276         /*
 277          * LQ & RXON updated cmds must be sent before BT Config cmd
 278          * to avoid 3-wire collisions
 279          */
 280         for_each_context(priv, ctx) {
 281                 iwlagn_set_rxon_chain(priv, ctx);
 282                 iwlagn_commit_rxon(priv, ctx);
 283         }
 284
 285         iwlagn_send_advance_bt_config(priv);
 286 out:
 287         mutex_unlock(&priv->shrd->mutex);
 288 }
 289
 290 /**
 291  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 292  *
 293  * This callback is provided in order to send a statistics request.
 294  *
 295  * This timer function is continually reset to execute within
 296  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 297  * was received.  We need to ensure we receive the statistics in order
 298  * to update the temperature used for calibrating the TXPOWER.
 299  */
 300 static void iwl_bg_statistics_periodic(unsigned long data)
 301 {
 302         struct iwl_priv *priv = (struct iwl_priv *)data;
 303
 304         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 305                 return;
 306
 307         /* dont send host command if rf-kill is on */
 308         if (!iwl_is_ready_rf(priv->shrd))
 309                 return;
 310
 311         iwl_send_statistics_request(priv, CMD_ASYNC, false);
 312 }
 313
 314
 315 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
 316                                         u32 start_idx, u32 num_events,
 317                                         u32 mode)
 318 {
 319         u32 i;
 320         u32 ptr;        /* SRAM byte address of log data */
 321         u32 ev, time, data; /* event log data */
 322         unsigned long reg_flags;
 323
 324         if (mode == 0)
 325                 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
 326         else
 327                 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
 328
 329         /* Make sure device is powered up for SRAM reads */
 330         spin_lock_irqsave(&bus(priv)->reg_lock, reg_flags);
 331         if (iwl_grab_nic_access(bus(priv))) {
 332                 spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 333                 return;
 334         }
 335
 336         /* Set starting address; reads will auto-increment */
 337         iwl_write32(bus(priv), HBUS_TARG_MEM_RADDR, ptr);
 338         rmb();
 339
 340         /*
 341          * "time" is actually "data" for mode 0 (no timestamp).
 342          * place event id # at far right for easier visual parsing.
 343          */
 344         for (i = 0; i < num_events; i++) {
 345                 ev = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 346                 time = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 347                 if (mode == 0) {
 348                         trace_iwlwifi_dev_ucode_cont_event(priv,
 349                                                         0, time, ev);
 350                 } else {
 351                         data = iwl_read32(bus(priv), HBUS_TARG_MEM_RDAT);
 352                         trace_iwlwifi_dev_ucode_cont_event(priv,
 353                                                 time, data, ev);
 354                 }
 355         }
 356         /* Allow device to power down */
 357         iwl_release_nic_access(bus(priv));
 358         spin_unlock_irqrestore(&bus(priv)->reg_lock, reg_flags);
 359 }
 360
 361 static void iwl_continuous_event_trace(struct iwl_priv *priv)
 362 {
 363         u32 capacity;   /* event log capacity in # entries */
 364         u32 base;       /* SRAM byte address of event log header */
 365         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
 366         u32 num_wraps;  /* # times uCode wrapped to top of log */
 367         u32 next_entry; /* index of next entry to be written by uCode */
 368
 369         base = priv->shrd->device_pointers.error_event_table;
 370         if (iwlagn_hw_valid_rtc_data_addr(base)) {
 371                 capacity = iwl_read_targ_mem(bus(priv), base);
 372                 num_wraps = iwl_read_targ_mem(bus(priv),
 373                                                 base + (2 * sizeof(u32)));
 374                 mode = iwl_read_targ_mem(bus(priv), base + (1 * sizeof(u32)));
 375                 next_entry = iwl_read_targ_mem(bus(priv),
 376                                                 base + (3 * sizeof(u32)));
 377         } else
 378                 return;
 379
 380         if (num_wraps == priv->event_log.num_wraps) {
 381                 iwl_print_cont_event_trace(priv,
 382                                        base, priv->event_log.next_entry,
 383                                        next_entry - priv->event_log.next_entry,
 384                                        mode);
 385                 priv->event_log.non_wraps_count++;
 386         } else {
 387                 if ((num_wraps - priv->event_log.num_wraps) > 1)
 388                         priv->event_log.wraps_more_count++;
 389                 else
 390                         priv->event_log.wraps_once_count++;
 391                 trace_iwlwifi_dev_ucode_wrap_event(priv,
 392                                 num_wraps - priv->event_log.num_wraps,
 393                                 next_entry, priv->event_log.next_entry);
 394                 if (next_entry < priv->event_log.next_entry) {
 395                         iwl_print_cont_event_trace(priv, base,
 396                                priv->event_log.next_entry,
 397                                capacity - priv->event_log.next_entry,
 398                                mode);
 399
 400                         iwl_print_cont_event_trace(priv, base, 0,
 401                                 next_entry, mode);
 402                 } else {
 403                         iwl_print_cont_event_trace(priv, base,
 404                                next_entry, capacity - next_entry,
 405                                mode);
 406
 407                         iwl_print_cont_event_trace(priv, base, 0,
 408                                 next_entry, mode);
 409                 }
 410         }
 411         priv->event_log.num_wraps = num_wraps;
 412         priv->event_log.next_entry = next_entry;
 413 }
 414
 415 /**
 416  * iwl_bg_ucode_trace - Timer callback to log ucode event
 417  *
 418  * The timer is continually set to execute every
 419  * UCODE_TRACE_PERIOD milliseconds after the last timer expired
 420  * this function is to perform continuous uCode event logging operation
 421  * if enabled
 422  */
 423 static void iwl_bg_ucode_trace(unsigned long data)
 424 {
 425         struct iwl_priv *priv = (struct iwl_priv *)data;
 426
 427         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 428                 return;
 429
 430         if (priv->event_log.ucode_trace) {
 431                 iwl_continuous_event_trace(priv);
 432                 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
 433                 mod_timer(&priv->ucode_trace,
 434                          jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
 435         }
 436 }
 437
 438 static void iwl_bg_tx_flush(struct work_struct *work)
 439 {
 440         struct iwl_priv *priv =
 441                 container_of(work, struct iwl_priv, tx_flush);
 442
 443         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
 444                 return;
 445
 446         /* do nothing if rf-kill is on */
 447         if (!iwl_is_ready_rf(priv->shrd))
 448                 return;
 449
 450         IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
 451         iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
 452 }
 453
 454 static void iwl_init_context(struct iwl_priv *priv, u32 ucode_flags)
 455 {
 456         int i;
 457
 458         /*
 459          * The default context is always valid,
 460          * the PAN context depends on uCode.
 461          */
 462         priv->shrd->valid_contexts = BIT(IWL_RXON_CTX_BSS);
 463         if (ucode_flags & IWL_UCODE_TLV_FLAGS_PAN)
 464                 priv->shrd->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
 465
 466         for (i = 0; i < NUM_IWL_RXON_CTX; i++)
 467                 priv->contexts[i].ctxid = i;
 468
 469         priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
 470         priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
 471         priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
 472         priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
 473         priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
 474         priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
 475         priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
 476         priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
 477         priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
 478                 BIT(NL80211_IFTYPE_ADHOC);
 479         priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
 480                 BIT(NL80211_IFTYPE_STATION);
 481         priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
 482         priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
 483         priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
 484         priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
 485
 486         priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
 487         priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
 488                 REPLY_WIPAN_RXON_TIMING;
 489         priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
 490                 REPLY_WIPAN_RXON_ASSOC;
 491         priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
 492         priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
 493         priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
 494         priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
 495         priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
 496         priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
 497                 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
 498
 499         if (ucode_flags & IWL_UCODE_TLV_FLAGS_P2P)
 500                 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
 501                         BIT(NL80211_IFTYPE_P2P_CLIENT) |
 502                         BIT(NL80211_IFTYPE_P2P_GO);
 503
 504         priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
 505         priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
 506         priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
 507
 508         BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
 509 }
 510
 511 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
 512
 513 #define UCODE_EXPERIMENTAL_INDEX        100
 514 #define UCODE_EXPERIMENTAL_TAG          "exp"
 515
 516 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
 517 {
 518         const char *name_pre = priv->cfg->fw_name_pre;
 519         char tag[8];
 520
 521         if (first) {
 522 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
 523                 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
 524                 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
 525         } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
 526 #endif
 527                 priv->fw_index = priv->cfg->ucode_api_max;
 528                 sprintf(tag, "%d", priv->fw_index);
 529         } else {
 530                 priv->fw_index--;
 531                 sprintf(tag, "%d", priv->fw_index);
 532         }
 533
 534         if (priv->fw_index < priv->cfg->ucode_api_min) {
 535                 IWL_ERR(priv, "no suitable firmware found!\n");
 536                 return -ENOENT;
 537         }
 538
 539         sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
 540
 541         IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
 542                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 543                                 ? "EXPERIMENTAL " : "",
 544                        priv->firmware_name);
 545
 546         return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
 547                                        bus(priv)->dev,
 548                                        GFP_KERNEL, priv, iwl_ucode_callback);
 549 }
 550
 551 struct iwlagn_firmware_pieces {
 552         const void *inst, *data, *init, *init_data, *wowlan_inst, *wowlan_data;
 553         size_t inst_size, data_size, init_size, init_data_size,
 554                wowlan_inst_size, wowlan_data_size;
 555
 556         u32 build;
 557
 558         u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
 559         u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
 560 };
 561
 562 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
 563                                        const struct firmware *ucode_raw,
 564                                        struct iwlagn_firmware_pieces *pieces)
 565 {
 566         struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
 567         u32 api_ver, hdr_size;
 568         const u8 *src;
 569
 570         priv->ucode_ver = le32_to_cpu(ucode->ver);
 571         api_ver = IWL_UCODE_API(priv->ucode_ver);
 572
 573         switch (api_ver) {
 574         default:
 575                 hdr_size = 28;
 576                 if (ucode_raw->size < hdr_size) {
 577                         IWL_ERR(priv, "File size too small!\n");
 578                         return -EINVAL;
 579                 }
 580                 pieces->build = le32_to_cpu(ucode->u.v2.build);
 581                 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
 582                 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
 583                 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
 584                 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
 585                 src = ucode->u.v2.data;
 586                 break;
 587         case 0:
 588         case 1:
 589         case 2:
 590                 hdr_size = 24;
 591                 if (ucode_raw->size < hdr_size) {
 592                         IWL_ERR(priv, "File size too small!\n");
 593                         return -EINVAL;
 594                 }
 595                 pieces->build = 0;
 596                 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
 597                 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
 598                 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
 599                 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
 600                 src = ucode->u.v1.data;
 601                 break;
 602         }
 603
 604         /* Verify size of file vs. image size info in file's header */
 605         if (ucode_raw->size != hdr_size + pieces->inst_size +
 606                                 pieces->data_size + pieces->init_size +
 607                                 pieces->init_data_size) {
 608
 609                 IWL_ERR(priv,
 610                         "uCode file size %d does not match expected size\n",
 611                         (int)ucode_raw->size);
 612                 return -EINVAL;
 613         }
 614
 615         pieces->inst = src;
 616         src += pieces->inst_size;
 617         pieces->data = src;
 618         src += pieces->data_size;
 619         pieces->init = src;
 620         src += pieces->init_size;
 621         pieces->init_data = src;
 622         src += pieces->init_data_size;
 623
 624         return 0;
 625 }
 626
 627 static int iwlagn_load_firmware(struct iwl_priv *priv,
 628                                 const struct firmware *ucode_raw,
 629                                 struct iwlagn_firmware_pieces *pieces,
 630                                 struct iwlagn_ucode_capabilities *capa)
 631 {
 632         struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
 633         struct iwl_ucode_tlv *tlv;
 634         size_t len = ucode_raw->size;
 635         const u8 *data;
 636         int wanted_alternative = iwlagn_mod_params.wanted_ucode_alternative;
 637         int tmp;
 638         u64 alternatives;
 639         u32 tlv_len;
 640         enum iwl_ucode_tlv_type tlv_type;
 641         const u8 *tlv_data;
 642
 643         if (len < sizeof(*ucode)) {
 644                 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
 645                 return -EINVAL;
 646         }
 647
 648         if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
 649                 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
 650                         le32_to_cpu(ucode->magic));
 651                 return -EINVAL;
 652         }
 653
 654         /*
 655          * Check which alternatives are present, and "downgrade"
 656          * when the chosen alternative is not present, warning
 657          * the user when that happens. Some files may not have
 658          * any alternatives, so don't warn in that case.
 659          */
 660         alternatives = le64_to_cpu(ucode->alternatives);
 661         tmp = wanted_alternative;
 662         if (wanted_alternative > 63)
 663                 wanted_alternative = 63;
 664         while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
 665                 wanted_alternative--;
 666         if (wanted_alternative && wanted_alternative != tmp)
 667                 IWL_WARN(priv,
 668                          "uCode alternative %d not available, choosing %d\n",
 669                          tmp, wanted_alternative);
 670
 671         priv->ucode_ver = le32_to_cpu(ucode->ver);
 672         pieces->build = le32_to_cpu(ucode->build);
 673         data = ucode->data;
 674
 675         len -= sizeof(*ucode);
 676
 677         while (len >= sizeof(*tlv)) {
 678                 u16 tlv_alt;
 679
 680                 len -= sizeof(*tlv);
 681                 tlv = (void *)data;
 682
 683                 tlv_len = le32_to_cpu(tlv->length);
 684                 tlv_type = le16_to_cpu(tlv->type);
 685                 tlv_alt = le16_to_cpu(tlv->alternative);
 686                 tlv_data = tlv->data;
 687
 688                 if (len < tlv_len) {
 689                         IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
 690                                 len, tlv_len);
 691                         return -EINVAL;
 692                 }
 693                 len -= ALIGN(tlv_len, 4);
 694                 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
 695
 696                 /*
 697                  * Alternative 0 is always valid.
 698                  *
 699                  * Skip alternative TLVs that are not selected.
 700                  */
 701                 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
 702                         continue;
 703
 704                 switch (tlv_type) {
 705                 case IWL_UCODE_TLV_INST:
 706                         pieces->inst = tlv_data;
 707                         pieces->inst_size = tlv_len;
 708                         break;
 709                 case IWL_UCODE_TLV_DATA:
 710                         pieces->data = tlv_data;
 711                         pieces->data_size = tlv_len;
 712                         break;
 713                 case IWL_UCODE_TLV_INIT:
 714                         pieces->init = tlv_data;
 715                         pieces->init_size = tlv_len;
 716                         break;
 717                 case IWL_UCODE_TLV_INIT_DATA:
 718                         pieces->init_data = tlv_data;
 719                         pieces->init_data_size = tlv_len;
 720                         break;
 721                 case IWL_UCODE_TLV_BOOT:
 722                         IWL_ERR(priv, "Found unexpected BOOT ucode\n");
 723                         break;
 724                 case IWL_UCODE_TLV_PROBE_MAX_LEN:
 725                         if (tlv_len != sizeof(u32))
 726                                 goto invalid_tlv_len;
 727                         capa->max_probe_length =
 728                                         le32_to_cpup((__le32 *)tlv_data);
 729                         break;
 730                 case IWL_UCODE_TLV_PAN:
 731                         if (tlv_len)
 732                                 goto invalid_tlv_len;
 733                         capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
 734                         break;
 735                 case IWL_UCODE_TLV_FLAGS:
 736                         /* must be at least one u32 */
 737                         if (tlv_len < sizeof(u32))
 738                                 goto invalid_tlv_len;
 739                         /* and a proper number of u32s */
 740                         if (tlv_len % sizeof(u32))
 741                                 goto invalid_tlv_len;
 742                         /*
 743                          * This driver only reads the first u32 as
 744                          * right now no more features are defined,
 745                          * if that changes then either the driver
 746                          * will not work with the new firmware, or
 747                          * it'll not take advantage of new features.
 748                          */
 749                         capa->flags = le32_to_cpup((__le32 *)tlv_data);
 750                         break;
 751                 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
 752                         if (tlv_len != sizeof(u32))
 753                                 goto invalid_tlv_len;
 754                         pieces->init_evtlog_ptr =
 755                                         le32_to_cpup((__le32 *)tlv_data);
 756                         break;
 757                 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
 758                         if (tlv_len != sizeof(u32))
 759                                 goto invalid_tlv_len;
 760                         pieces->init_evtlog_size =
 761                                         le32_to_cpup((__le32 *)tlv_data);
 762                         break;
 763                 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
 764                         if (tlv_len != sizeof(u32))
 765                                 goto invalid_tlv_len;
 766                         pieces->init_errlog_ptr =
 767                                         le32_to_cpup((__le32 *)tlv_data);
 768                         break;
 769                 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
 770                         if (tlv_len != sizeof(u32))
 771                                 goto invalid_tlv_len;
 772                         pieces->inst_evtlog_ptr =
 773                                         le32_to_cpup((__le32 *)tlv_data);
 774                         break;
 775                 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
 776                         if (tlv_len != sizeof(u32))
 777                                 goto invalid_tlv_len;
 778                         pieces->inst_evtlog_size =
 779                                         le32_to_cpup((__le32 *)tlv_data);
 780                         break;
 781                 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
 782                         if (tlv_len != sizeof(u32))
 783                                 goto invalid_tlv_len;
 784                         pieces->inst_errlog_ptr =
 785                                         le32_to_cpup((__le32 *)tlv_data);
 786                         break;
 787                 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
 788                         if (tlv_len)
 789                                 goto invalid_tlv_len;
 790                         priv->enhance_sensitivity_table = true;
 791                         break;
 792                 case IWL_UCODE_TLV_WOWLAN_INST:
 793                         pieces->wowlan_inst = tlv_data;
 794                         pieces->wowlan_inst_size = tlv_len;
 795                         break;
 796                 case IWL_UCODE_TLV_WOWLAN_DATA:
 797                         pieces->wowlan_data = tlv_data;
 798                         pieces->wowlan_data_size = tlv_len;
 799                         break;
 800                 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
 801                         if (tlv_len != sizeof(u32))
 802                                 goto invalid_tlv_len;
 803                         capa->standard_phy_calibration_size =
 804                                         le32_to_cpup((__le32 *)tlv_data);
 805                         break;
 806                 default:
 807                         IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
 808                         break;
 809                 }
 810         }
 811
 812         if (len) {
 813                 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
 814                 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
 815                 return -EINVAL;
 816         }
 817
 818         return 0;
 819
 820  invalid_tlv_len:
 821         IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
 822         iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
 823
 824         return -EINVAL;
 825 }
 826
 827 /**
 828  * iwl_ucode_callback - callback when firmware was loaded
 829  *
 830  * If loaded successfully, copies the firmware into buffers
 831  * for the card to fetch (via DMA).
 832  */
 833 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
 834 {
 835         struct iwl_priv *priv = context;
 836         struct iwl_ucode_header *ucode;
 837         int err;
 838         struct iwlagn_firmware_pieces pieces;
 839         const unsigned int api_max = priv->cfg->ucode_api_max;
 840         unsigned int api_ok = priv->cfg->ucode_api_ok;
 841         const unsigned int api_min = priv->cfg->ucode_api_min;
 842         u32 api_ver;
 843         char buildstr[25];
 844         u32 build;
 845         struct iwlagn_ucode_capabilities ucode_capa = {
 846                 .max_probe_length = 200,
 847                 .standard_phy_calibration_size =
 848                         IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
 849         };
 850
 851         if (!api_ok)
 852                 api_ok = api_max;
 853
 854         memset(&pieces, 0, sizeof(pieces));
 855
 856         if (!ucode_raw) {
 857                 if (priv->fw_index <= api_ok)
 858                         IWL_ERR(priv,
 859                                 "request for firmware file '%s' failed.\n",
 860                                 priv->firmware_name);
 861                 goto try_again;
 862         }
 863
 864         IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
 865                        priv->firmware_name, ucode_raw->size);
 866
 867         /* Make sure that we got at least the API version number */
 868         if (ucode_raw->size < 4) {
 869                 IWL_ERR(priv, "File size way too small!\n");
 870                 goto try_again;
 871         }
 872
 873         /* Data from ucode file:  header followed by uCode images */
 874         ucode = (struct iwl_ucode_header *)ucode_raw->data;
 875
 876         if (ucode->ver)
 877                 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
 878         else
 879                 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
 880                                            &ucode_capa);
 881
 882         if (err)
 883                 goto try_again;
 884
 885         api_ver = IWL_UCODE_API(priv->ucode_ver);
 886         build = pieces.build;
 887
 888         /*
 889          * api_ver should match the api version forming part of the
 890          * firmware filename ... but we don't check for that and only rely
 891          * on the API version read from firmware header from here on forward
 892          */
 893         /* no api version check required for experimental uCode */
 894         if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
 895                 if (api_ver < api_min || api_ver > api_max) {
 896                         IWL_ERR(priv,
 897                                 "Driver unable to support your firmware API. "
 898                                 "Driver supports v%u, firmware is v%u.\n",
 899                                 api_max, api_ver);
 900                         goto try_again;
 901                 }
 902
 903                 if (api_ver < api_ok) {
 904                         if (api_ok != api_max)
 905                                 IWL_ERR(priv, "Firmware has old API version, "
 906                                         "expected v%u through v%u, got v%u.\n",
 907                                         api_ok, api_max, api_ver);
 908                         else
 909                                 IWL_ERR(priv, "Firmware has old API version, "
 910                                         "expected v%u, got v%u.\n",
 911                                         api_max, api_ver);
 912                         IWL_ERR(priv, "New firmware can be obtained from "
 913                                       "http://www.intellinuxwireless.org/.\n");
 914                 }
 915         }
 916
 917         if (build)
 918                 sprintf(buildstr, " build %u%s", build,
 919                        (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
 920                                 ? " (EXP)" : "");
 921         else
 922                 buildstr[0] = '\0';
 923
 924         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
 925                  IWL_UCODE_MAJOR(priv->ucode_ver),
 926                  IWL_UCODE_MINOR(priv->ucode_ver),
 927                  IWL_UCODE_API(priv->ucode_ver),
 928                  IWL_UCODE_SERIAL(priv->ucode_ver),
 929                  buildstr);
 930
 931         snprintf(priv->hw->wiphy->fw_version,
 932                  sizeof(priv->hw->wiphy->fw_version),
 933                  "%u.%u.%u.%u%s",
 934                  IWL_UCODE_MAJOR(priv->ucode_ver),
 935                  IWL_UCODE_MINOR(priv->ucode_ver),
 936                  IWL_UCODE_API(priv->ucode_ver),
 937                  IWL_UCODE_SERIAL(priv->ucode_ver),
 938                  buildstr);
 939
 940         /*
 941          * For any of the failures below (before allocating pci memory)
 942          * we will try to load a version with a smaller API -- maybe the
 943          * user just got a corrupted version of the latest API.
 944          */
 945
 946         IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
 947                        priv->ucode_ver);
 948         IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
 949                        pieces.inst_size);
 950         IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
 951                        pieces.data_size);
 952         IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
 953                        pieces.init_size);
 954         IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
 955                        pieces.init_data_size);
 956
 957         /* Verify that uCode images will fit in card's SRAM */
 958         if (pieces.inst_size > hw_params(priv).max_inst_size) {
 959                 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
 960                         pieces.inst_size);
 961                 goto try_again;
 962         }
 963
 964         if (pieces.data_size > hw_params(priv).max_data_size) {
 965                 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
 966                         pieces.data_size);
 967                 goto try_again;
 968         }
 969
 970         if (pieces.init_size > hw_params(priv).max_inst_size) {
 971                 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
 972                         pieces.init_size);
 973                 goto try_again;
 974         }
 975
 976         if (pieces.init_data_size > hw_params(priv).max_data_size) {
 977                 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
 978                         pieces.init_data_size);
 979                 goto try_again;
 980         }
 981
 982         /* Allocate ucode buffers for card's bus-master loading ... */
 983
 984         /* Runtime instructions and 2 copies of data:
 985          * 1) unmodified from disk
 986          * 2) backup cache for save/restore during power-downs */
 987         if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.code,
 988                               pieces.inst, pieces.inst_size))
 989                 goto err_pci_alloc;
 990         if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_rt.data,
 991                               pieces.data, pieces.data_size))
 992                 goto err_pci_alloc;
 993
 994         /* Initialization instructions and data */
 995         if (pieces.init_size && pieces.init_data_size) {
 996                 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.code,
 997                                       pieces.init, pieces.init_size))
 998                         goto err_pci_alloc;
 999                 if (iwl_alloc_fw_desc(bus(priv), &trans(priv)->ucode_init.data,
1000                                       pieces.init_data, pieces.init_data_size))
1001                         goto err_pci_alloc;
1002         }
1003
1004         /* WoWLAN instructions and data */
1005         if (pieces.wowlan_inst_size && pieces.wowlan_data_size) {
1006                 if (iwl_alloc_fw_desc(bus(priv),
1007                                       &trans(priv)->ucode_wowlan.code,
1008                                       pieces.wowlan_inst,
1009                                       pieces.wowlan_inst_size))
1010                         goto err_pci_alloc;
1011                 if (iwl_alloc_fw_desc(bus(priv),
1012                                       &trans(priv)->ucode_wowlan.data,
1013                                       pieces.wowlan_data,
1014                                       pieces.wowlan_data_size))
1015                         goto err_pci_alloc;
1016         }
1017
1018         /* Now that we can no longer fail, copy information */
1019
1020         /*
1021          * The (size - 16) / 12 formula is based on the information recorded
1022          * for each event, which is of mode 1 (including timestamp) for all
1023          * new microcodes that include this information.
1024          */
1025         priv->init_evtlog_ptr = pieces.init_evtlog_ptr;
1026         if (pieces.init_evtlog_size)
1027                 priv->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1028         else
1029                 priv->init_evtlog_size =
1030                         priv->cfg->base_params->max_event_log_size;
1031         priv->init_errlog_ptr = pieces.init_errlog_ptr;
1032         priv->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1033         if (pieces.inst_evtlog_size)
1034                 priv->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1035         else
1036                 priv->inst_evtlog_size =
1037                         priv->cfg->base_params->max_event_log_size;
1038         priv->inst_errlog_ptr = pieces.inst_errlog_ptr;
1039 #ifndef CONFIG_IWLWIFI_P2P
1040         ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1041 #endif
1042
1043         priv->new_scan_threshold_behaviour =
1044                 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1045
1046         if (!(priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE))
1047                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_PAN;
1048
1049         /*
1050          * if not PAN, then don't support P2P -- might be a uCode
1051          * packaging bug or due to the eeprom check above
1052          */
1053         if (!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN))
1054                 ucode_capa.flags &= ~IWL_UCODE_TLV_FLAGS_P2P;
1055
1056         if (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN) {
1057                 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1058                 priv->shrd->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1059         } else {
1060                 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1061                 priv->shrd->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1062         }
1063         /*
1064          * figure out the offset of chain noise reset and gain commands
1065          * base on the size of standard phy calibration commands table size
1066          */
1067         if (ucode_capa.standard_phy_calibration_size >
1068             IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1069                 ucode_capa.standard_phy_calibration_size =
1070                         IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1071
1072         priv->phy_calib_chain_noise_reset_cmd =
1073                 ucode_capa.standard_phy_calibration_size;
1074         priv->phy_calib_chain_noise_gain_cmd =
1075                 ucode_capa.standard_phy_calibration_size + 1;
1076
1077         /* initialize all valid contexts */
1078         iwl_init_context(priv, ucode_capa.flags);
1079
1080         /**************************************************
1081          * This is still part of probe() in a sense...
1082          *
1083          * 9. Setup and register with mac80211 and debugfs
1084          **************************************************/
1085         err = iwlagn_mac_setup_register(priv, &ucode_capa);
1086         if (err)
1087                 goto out_unbind;
1088
1089         err = iwl_dbgfs_register(priv, DRV_NAME);
1090         if (err)
1091                 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1092
1093         /* We have our copies now, allow OS release its copies */
1094         release_firmware(ucode_raw);
1095         complete(&priv->firmware_loading_complete);
1096         return;
1097
1098  try_again:
1099         /* try next, if any */
1100         if (iwl_request_firmware(priv, false))
1101                 goto out_unbind;
1102         release_firmware(ucode_raw);
1103         return;
1104
1105  err_pci_alloc:
1106         IWL_ERR(priv, "failed to allocate pci memory\n");
1107         iwl_dealloc_ucode(trans(priv));
1108  out_unbind:
1109         complete(&priv->firmware_loading_complete);
1110         device_release_driver(bus(priv)->dev);
1111         release_firmware(ucode_raw);
1112 }
1113
1114 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1115 {
1116         struct iwl_ct_kill_config cmd;
1117         struct iwl_ct_kill_throttling_config adv_cmd;
1118         unsigned long flags;
1119         int ret = 0;
1120
1121         spin_lock_irqsave(&priv->shrd->lock, flags);
1122         iwl_write32(bus(priv), CSR_UCODE_DRV_GP1_CLR,
1123                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1124         spin_unlock_irqrestore(&priv->shrd->lock, flags);
1125         priv->thermal_throttle.ct_kill_toggle = false;
1126
1127         if (priv->cfg->base_params->support_ct_kill_exit) {
1128                 adv_cmd.critical_temperature_enter =
1129                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1130                 adv_cmd.critical_temperature_exit =
1131                         cpu_to_le32(hw_params(priv).ct_kill_exit_threshold);
1132
1133                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1134                                        REPLY_CT_KILL_CONFIG_CMD,
1135                                        CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1136                 if (ret)
1137                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1138                 else
1139                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1140                                 "succeeded, critical temperature enter is %d,"
1141                                 "exit is %d\n",
1142                                 hw_params(priv).ct_kill_threshold,
1143                                 hw_params(priv).ct_kill_exit_threshold);
1144         } else {
1145                 cmd.critical_temperature_R =
1146                         cpu_to_le32(hw_params(priv).ct_kill_threshold);
1147
1148                 ret = iwl_trans_send_cmd_pdu(trans(priv),
1149                                        REPLY_CT_KILL_CONFIG_CMD,
1150                                        CMD_SYNC, sizeof(cmd), &cmd);
1151                 if (ret)
1152                         IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1153                 else
1154                         IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1155                                 "succeeded, "
1156                                 "critical temperature is %d\n",
1157                                 hw_params(priv).ct_kill_threshold);
1158         }
1159 }
1160
1161 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1162 {
1163         struct iwl_calib_cfg_cmd calib_cfg_cmd;
1164         struct iwl_host_cmd cmd = {
1165                 .id = CALIBRATION_CFG_CMD,
1166                 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1167                 .data = { &calib_cfg_cmd, },
1168         };
1169
1170         memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1171         calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_RT_CFG_ALL;
1172         calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1173
1174         return iwl_trans_send_cmd(trans(priv), &cmd);
1175 }
1176
1177
1178 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1179 {
1180         struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1181           .valid = cpu_to_le32(valid_tx_ant),
1182         };
1183
1184         if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1185                 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1186                 return iwl_trans_send_cmd_pdu(trans(priv),
1187                                         TX_ANT_CONFIGURATION_CMD,
1188                                         CMD_SYNC,
1189                                         sizeof(struct iwl_tx_ant_config_cmd),
1190                                         &tx_ant_cmd);
1191         } else {
1192                 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1193                 return -EOPNOTSUPP;
1194         }
1195 }
1196
1197 /**
1198  * iwl_alive_start - called after REPLY_ALIVE notification received
1199  *                   from protocol/runtime uCode (initialization uCode's
1200  *                   Alive gets handled by iwl_init_alive_start()).
1201  */
1202 int iwl_alive_start(struct iwl_priv *priv)
1203 {
1204         int ret = 0;
1205         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1206
1207         /*TODO: this should go to the transport layer */
1208         iwl_reset_ict(trans(priv));
1209
1210         IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1211
1212         /* After the ALIVE response, we can send host commands to the uCode */
1213         set_bit(STATUS_ALIVE, &priv->shrd->status);
1214
1215         /* Enable watchdog to monitor the driver tx queues */
1216         iwl_setup_watchdog(priv);
1217
1218         if (iwl_is_rfkill(priv->shrd))
1219                 return -ERFKILL;
1220
1221         /* download priority table before any calibration request */
1222         if (priv->cfg->bt_params &&
1223             priv->cfg->bt_params->advanced_bt_coexist) {
1224                 /* Configure Bluetooth device coexistence support */
1225                 if (priv->cfg->bt_params->bt_sco_disable)
1226                         priv->bt_enable_pspoll = false;
1227                 else
1228                         priv->bt_enable_pspoll = true;
1229
1230                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1231                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1232                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1233                 iwlagn_send_advance_bt_config(priv);
1234                 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
1235                 priv->cur_rssi_ctx = NULL;
1236
1237                 iwl_send_prio_tbl(trans(priv));
1238
1239                 /* FIXME: w/a to force change uCode BT state machine */
1240                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_OPEN,
1241                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1242                 if (ret)
1243                         return ret;
1244                 ret = iwl_send_bt_env(trans(priv), IWL_BT_COEX_ENV_CLOSE,
1245                                          BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
1246                 if (ret)
1247                         return ret;
1248         } else {
1249                 /*
1250                  * default is 2-wire BT coexexistence support
1251                  */
1252                 iwl_send_bt_config(priv);
1253         }
1254
1255         if (hw_params(priv).calib_rt_cfg)
1256                 iwlagn_send_calib_cfg_rt(priv,
1257                                          hw_params(priv).calib_rt_cfg);
1258
1259         ieee80211_wake_queues(priv->hw);
1260
1261         priv->active_rate = IWL_RATES_MASK;
1262
1263         /* Configure Tx antenna selection based on H/W config */
1264         iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
1265
1266         if (iwl_is_associated_ctx(ctx) && !priv->shrd->wowlan) {
1267                 struct iwl_rxon_cmd *active_rxon =
1268                                 (struct iwl_rxon_cmd *)&ctx->active;
1269                 /* apply any changes in staging */
1270                 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
1271                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1272         } else {
1273                 struct iwl_rxon_context *tmp;
1274                 /* Initialize our rx_config data */
1275                 for_each_context(priv, tmp)
1276                         iwl_connection_init_rx_config(priv, tmp);
1277
1278                 iwlagn_set_rxon_chain(priv, ctx);
1279         }
1280
1281         if (!priv->shrd->wowlan) {
1282                 /* WoWLAN ucode will not reply in the same way, skip it */
1283                 iwl_reset_run_time_calib(priv);
1284         }
1285
1286         set_bit(STATUS_READY, &priv->shrd->status);
1287
1288         /* Configure the adapter for unassociated operation */
1289         ret = iwlagn_commit_rxon(priv, ctx);
1290         if (ret)
1291                 return ret;
1292
1293         /* At this point, the NIC is initialized and operational */
1294         iwl_rf_kill_ct_config(priv);
1295
1296         IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
1297
1298         return iwl_power_update_mode(priv, true);
1299 }
1300
1301 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1302
1303 void __iwl_down(struct iwl_priv *priv)
1304 {
1305         int exit_pending;
1306
1307         IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
1308
1309         iwl_scan_cancel_timeout(priv, 200);
1310
1311         /*
1312          * If active, scanning won't cancel it, so say it expired.
1313          * No race since we hold the mutex here and a new one
1314          * can't come in at this time.
1315          */
1316         ieee80211_remain_on_channel_expired(priv->hw);
1317
1318         exit_pending =
1319                 test_and_set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1320
1321         /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
1322          * to prevent rearm timer */
1323         del_timer_sync(&priv->watchdog);
1324
1325         iwl_clear_ucode_stations(priv, NULL);
1326         iwl_dealloc_bcast_stations(priv);
1327         iwl_clear_driver_stations(priv);
1328
1329         /* reset BT coex data */
1330         priv->bt_status = 0;
1331         priv->cur_rssi_ctx = NULL;
1332         priv->bt_is_sco = 0;
1333         if (priv->cfg->bt_params)
1334                 priv->bt_traffic_load =
1335                          priv->cfg->bt_params->bt_init_traffic_load;
1336         else
1337                 priv->bt_traffic_load = 0;
1338         priv->bt_full_concurrent = false;
1339         priv->bt_ci_compliance = 0;
1340
1341         /* Wipe out the EXIT_PENDING status bit if we are not actually
1342          * exiting the module */
1343         if (!exit_pending)
1344                 clear_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1345
1346         if (priv->mac80211_registered)
1347                 ieee80211_stop_queues(priv->hw);
1348
1349         iwl_trans_stop_device(trans(priv));
1350
1351         /* Clear out all status bits but a few that are stable across reset */
1352         priv->shrd->status &=
1353                         test_bit(STATUS_RF_KILL_HW, &priv->shrd->status) <<
1354                                 STATUS_RF_KILL_HW |
1355                         test_bit(STATUS_GEO_CONFIGURED, &priv->shrd->status) <<
1356                                 STATUS_GEO_CONFIGURED |
1357                         test_bit(STATUS_FW_ERROR, &priv->shrd->status) <<
1358                                 STATUS_FW_ERROR |
1359                         test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) <<
1360                                 STATUS_EXIT_PENDING;
1361
1362         dev_kfree_skb(priv->beacon_skb);
1363         priv->beacon_skb = NULL;
1364 }
1365
1366 void iwl_down(struct iwl_priv *priv)
1367 {
1368         mutex_lock(&priv->shrd->mutex);
1369         __iwl_down(priv);
1370         mutex_unlock(&priv->shrd->mutex);
1371
1372         iwl_cancel_deferred_work(priv);
1373 }
1374
1375 /*****************************************************************************
1376  *
1377  * Workqueue callbacks
1378  *
1379  *****************************************************************************/
1380
1381 static void iwl_bg_run_time_calib_work(struct work_struct *work)
1382 {
1383         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1384                         run_time_calib_work);
1385
1386         mutex_lock(&priv->shrd->mutex);
1387
1388         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status) ||
1389             test_bit(STATUS_SCANNING, &priv->shrd->status)) {
1390                 mutex_unlock(&priv->shrd->mutex);
1391                 return;
1392         }
1393
1394         if (priv->start_calib) {
1395                 iwl_chain_noise_calibration(priv);
1396                 iwl_sensitivity_calibration(priv);
1397         }
1398
1399         mutex_unlock(&priv->shrd->mutex);
1400 }
1401
1402 void iwlagn_prepare_restart(struct iwl_priv *priv)
1403 {
1404         struct iwl_rxon_context *ctx;
1405         bool bt_full_concurrent;
1406         u8 bt_ci_compliance;
1407         u8 bt_load;
1408         u8 bt_status;
1409         bool bt_is_sco;
1410
1411         lockdep_assert_held(&priv->shrd->mutex);
1412
1413         for_each_context(priv, ctx)
1414                 ctx->vif = NULL;
1415         priv->is_open = 0;
1416
1417         /*
1418          * __iwl_down() will clear the BT status variables,
1419          * which is correct, but when we restart we really
1420          * want to keep them so restore them afterwards.
1421          *
1422          * The restart process will later pick them up and
1423          * re-configure the hw when we reconfigure the BT
1424          * command.
1425          */
1426         bt_full_concurrent = priv->bt_full_concurrent;
1427         bt_ci_compliance = priv->bt_ci_compliance;
1428         bt_load = priv->bt_traffic_load;
1429         bt_status = priv->bt_status;
1430         bt_is_sco = priv->bt_is_sco;
1431
1432         __iwl_down(priv);
1433
1434         priv->bt_full_concurrent = bt_full_concurrent;
1435         priv->bt_ci_compliance = bt_ci_compliance;
1436         priv->bt_traffic_load = bt_load;
1437         priv->bt_status = bt_status;
1438         priv->bt_is_sco = bt_is_sco;
1439 }
1440
1441 static void iwl_bg_restart(struct work_struct *data)
1442 {
1443         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
1444
1445         if (test_bit(STATUS_EXIT_PENDING, &priv->shrd->status))
1446                 return;
1447
1448         if (test_and_clear_bit(STATUS_FW_ERROR, &priv->shrd->status)) {
1449                 mutex_lock(&priv->shrd->mutex);
1450                 iwlagn_prepare_restart(priv);
1451                 mutex_unlock(&priv->shrd->mutex);
1452                 iwl_cancel_deferred_work(priv);
1453                 ieee80211_restart_hw(priv->hw);
1454         } else {
1455                 WARN_ON(1);
1456         }
1457 }
1458
1459
1460
1461
1462 void iwlagn_disable_roc(struct iwl_priv *priv)
1463 {
1464         struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
1465
1466         lockdep_assert_held(&priv->shrd->mutex);
1467
1468         if (!priv->hw_roc_setup)
1469                 return;
1470
1471         ctx->staging.dev_type = RXON_DEV_TYPE_P2P;
1472         ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1473
1474         priv->hw_roc_channel = NULL;
1475
1476         memset(ctx->staging.node_addr, 0, ETH_ALEN);
1477
1478         iwlagn_commit_rxon(priv, ctx);
1479
1480         ctx->is_active = false;
1481         priv->hw_roc_setup = false;
1482 }
1483
1484 static void iwlagn_disable_roc_work(struct work_struct *work)
1485 {
1486         struct iwl_priv *priv = container_of(work, struct iwl_priv,
1487                                              hw_roc_disable_work.work);
1488
1489         mutex_lock(&priv->shrd->mutex);
1490         iwlagn_disable_roc(priv);
1491         mutex_unlock(&priv->shrd->mutex);
1492 }
1493
1494 /*****************************************************************************
1495  *
1496  * driver setup and teardown
1497  *
1498  *****************************************************************************/
1499
1500 static void iwl_setup_deferred_work(struct iwl_priv *priv)
1501 {
1502         priv->shrd->workqueue = create_singlethread_workqueue(DRV_NAME);
1503
1504         init_waitqueue_head(&priv->shrd->wait_command_queue);
1505
1506         INIT_WORK(&priv->restart, iwl_bg_restart);
1507         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
1508         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
1509         INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
1510         INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
1511         INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
1512         INIT_DELAYED_WORK(&priv->hw_roc_disable_work,
1513                           iwlagn_disable_roc_work);
1514
1515         iwl_setup_scan_deferred_work(priv);
1516
1517         if (priv->cfg->lib->bt_setup_deferred_work)
1518                 priv->cfg->lib->bt_setup_deferred_work(priv);
1519
1520         init_timer(&priv->statistics_periodic);
1521         priv->statistics_periodic.data = (unsigned long)priv;
1522         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
1523
1524         init_timer(&priv->ucode_trace);
1525         priv->ucode_trace.data = (unsigned long)priv;
1526         priv->ucode_trace.function = iwl_bg_ucode_trace;
1527
1528         init_timer(&priv->watchdog);
1529         priv->watchdog.data = (unsigned long)priv;
1530         priv->watchdog.function = iwl_bg_watchdog;
1531 }
1532
1533 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
1534 {
1535         if (priv->cfg->lib->cancel_deferred_work)
1536                 priv->cfg->lib->cancel_deferred_work(priv);
1537
1538         cancel_work_sync(&priv->run_time_calib_work);
1539         cancel_work_sync(&priv->beacon_update);
1540
1541         iwl_cancel_scan_deferred_work(priv);
1542
1543         cancel_work_sync(&priv->bt_full_concurrency);
1544         cancel_work_sync(&priv->bt_runtime_config);
1545         cancel_delayed_work_sync(&priv->hw_roc_disable_work);
1546
1547         del_timer_sync(&priv->statistics_periodic);
1548         del_timer_sync(&priv->ucode_trace);
1549 }
1550
1551 static void iwl_init_hw_rates(struct iwl_priv *priv,
1552                               struct ieee80211_rate *rates)
1553 {
1554         int i;
1555
1556         for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
1557                 rates[i].bitrate = iwl_rates[i].ieee * 5;
1558                 rates[i].hw_value = i; /* Rate scaling will work on indexes */
1559                 rates[i].hw_value_short = i;
1560                 rates[i].flags = 0;
1561                 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
1562                         /*
1563                          * If CCK != 1M then set short preamble rate flag.
1564                          */
1565                         rates[i].flags |=
1566                                 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
1567                                         0 : IEEE80211_RATE_SHORT_PREAMBLE;
1568                 }
1569         }
1570 }
1571
1572 static int iwl_init_drv(struct iwl_priv *priv)
1573 {
1574         int ret;
1575
1576         spin_lock_init(&priv->shrd->sta_lock);
1577
1578         mutex_init(&priv->shrd->mutex);
1579
1580         INIT_LIST_HEAD(&trans(priv)->calib_results);
1581
1582         priv->ieee_channels = NULL;
1583         priv->ieee_rates = NULL;
1584         priv->band = IEEE80211_BAND_2GHZ;
1585
1586         priv->iw_mode = NL80211_IFTYPE_STATION;
1587         priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
1588         priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
1589         priv->agg_tids_count = 0;
1590
1591         /* initialize force reset */
1592         priv->force_reset[IWL_RF_RESET].reset_duration =
1593                 IWL_DELAY_NEXT_FORCE_RF_RESET;
1594         priv->force_reset[IWL_FW_RESET].reset_duration =
1595                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
1596
1597         priv->rx_statistics_jiffies = jiffies;
1598
1599         /* Choose which receivers/antennas to use */
1600         iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
1601
1602         iwl_init_scan_params(priv);
1603
1604         /* init bt coex */
1605         if (priv->cfg->bt_params &&
1606             priv->cfg->bt_params->advanced_bt_coexist) {
1607                 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
1608                 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
1609                 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
1610                 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
1611                 priv->bt_duration = BT_DURATION_LIMIT_DEF;
1612                 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
1613         }
1614
1615         ret = iwl_init_channel_map(priv);
1616         if (ret) {
1617                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
1618                 goto err;
1619         }
1620
1621         ret = iwl_init_geos(priv);
1622         if (ret) {
1623                 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
1624                 goto err_free_channel_map;
1625         }
1626         iwl_init_hw_rates(priv, priv->ieee_rates);
1627
1628         return 0;
1629
1630 err_free_channel_map:
1631         iwl_free_channel_map(priv);
1632 err:
1633         return ret;
1634 }
1635
1636 static void iwl_uninit_drv(struct iwl_priv *priv)
1637 {
1638         iwl_free_geos(priv);
1639         iwl_free_channel_map(priv);
1640         if (priv->tx_cmd_pool)
1641                 kmem_cache_destroy(priv->tx_cmd_pool);
1642         kfree(priv->scan_cmd);
1643         kfree(priv->beacon_cmd);
1644         kfree(rcu_dereference_raw(priv->noa_data));
1645 #ifdef CONFIG_IWLWIFI_DEBUGFS
1646         kfree(priv->wowlan_sram);
1647 #endif
1648 }
1649
1650
1651
1652 static u32 iwl_hw_detect(struct iwl_priv *priv)
1653 {
1654         return iwl_read32(bus(priv), CSR_HW_REV);
1655 }
1656
1657 /* Size of one Rx buffer in host DRAM */
1658 #define IWL_RX_BUF_SIZE_4K (4 * 1024)
1659 #define IWL_RX_BUF_SIZE_8K (8 * 1024)
1660
1661 static int iwl_set_hw_params(struct iwl_priv *priv)
1662 {
1663         if (iwlagn_mod_params.amsdu_size_8K)
1664                 hw_params(priv).rx_page_order =
1665                         get_order(IWL_RX_BUF_SIZE_8K);
1666         else
1667                 hw_params(priv).rx_page_order =
1668                         get_order(IWL_RX_BUF_SIZE_4K);
1669
1670         if (iwlagn_mod_params.disable_11n)
1671                 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
1672
1673         hw_params(priv).num_ampdu_queues =
1674                 priv->cfg->base_params->num_of_ampdu_queues;
1675         hw_params(priv).shadow_reg_enable =
1676                 priv->cfg->base_params->shadow_reg_enable;
1677         hw_params(priv).sku = priv->cfg->sku;
1678         hw_params(priv).wd_timeout = priv->cfg->base_params->wd_timeout;
1679
1680         /* Device-specific setup */
1681         return priv->cfg->lib->set_hw_params(priv);
1682 }
1683
1684
1685
1686 static void iwl_debug_config(struct iwl_priv *priv)
1687 {
1688         dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUG "
1689 #ifdef CONFIG_IWLWIFI_DEBUG
1690                 "enabled\n");
1691 #else
1692                 "disabled\n");
1693 #endif
1694         dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEBUGFS "
1695 #ifdef CONFIG_IWLWIFI_DEBUGFS
1696                 "enabled\n");
1697 #else
1698                 "disabled\n");
1699 #endif
1700         dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TRACING "
1701 #ifdef CONFIG_IWLWIFI_DEVICE_TRACING
1702                 "enabled\n");
1703 #else
1704                 "disabled\n");
1705 #endif
1706
1707         dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_DEVICE_TESTMODE "
1708 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
1709                 "enabled\n");
1710 #else
1711                 "disabled\n");
1712 #endif
1713         dev_printk(KERN_INFO, bus(priv)->dev, "CONFIG_IWLWIFI_P2P "
1714 #ifdef CONFIG_IWLWIFI_P2P
1715                 "enabled\n");
1716 #else
1717                 "disabled\n");
1718 #endif
1719 }
1720
1721 int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
1722                 struct iwl_cfg *cfg)
1723 {
1724         int err = 0;
1725         struct iwl_priv *priv;
1726         struct ieee80211_hw *hw;
1727         u16 num_mac;
1728         u32 hw_rev;
1729
1730         /************************
1731          * 1. Allocating HW data
1732          ************************/
1733         hw = iwl_alloc_all();
1734         if (!hw) {
1735                 pr_err("%s: Cannot allocate network device\n", cfg->name);
1736                 err = -ENOMEM;
1737                 goto out;
1738         }
1739
1740         priv = hw->priv;
1741         priv->shrd = &priv->_shrd;
1742         bus->shrd = priv->shrd;
1743         priv->shrd->bus = bus;
1744         priv->shrd->priv = priv;
1745
1746         priv->shrd->trans = trans_ops->alloc(priv->shrd);
1747         if (priv->shrd->trans == NULL) {
1748                 err = -ENOMEM;
1749                 goto out_free_traffic_mem;
1750         }
1751
1752         /* At this point both hw and priv are allocated. */
1753
1754         SET_IEEE80211_DEV(hw, bus(priv)->dev);
1755
1756         /* what debugging capabilities we have */
1757         iwl_debug_config(priv);
1758
1759         IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
1760         priv->cfg = cfg;
1761
1762         /* is antenna coupling more than 35dB ? */
1763         priv->bt_ant_couple_ok =
1764                 (iwlagn_mod_params.ant_coupling >
1765                         IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
1766                         true : false;
1767
1768         /* enable/disable bt channel inhibition */
1769         priv->bt_ch_announce = iwlagn_mod_params.bt_ch_announce;
1770         IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
1771                        (priv->bt_ch_announce) ? "On" : "Off");
1772
1773         if (iwl_alloc_traffic_mem(priv))
1774                 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
1775
1776         /* these spin locks will be used in apm_ops.init and EEPROM access
1777          * we should init now
1778          */
1779         spin_lock_init(&bus(priv)->reg_lock);
1780         spin_lock_init(&priv->shrd->lock);
1781
1782         /*
1783          * stop and reset the on-board processor just in case it is in a
1784          * strange state ... like being left stranded by a primary kernel
1785          * and this is now the kdump kernel trying to start up
1786          */
1787         iwl_write32(bus(priv), CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1788
1789         /***********************
1790          * 3. Read REV register
1791          ***********************/
1792         hw_rev = iwl_hw_detect(priv);
1793         IWL_INFO(priv, "Detected %s, REV=0x%X\n",
1794                 priv->cfg->name, hw_rev);
1795
1796         err = iwl_trans_request_irq(trans(priv));
1797         if (err)
1798                 goto out_free_trans;
1799
1800         if (iwl_trans_prepare_card_hw(trans(priv))) {
1801                 err = -EIO;
1802                 IWL_WARN(priv, "Failed, HW not ready\n");
1803                 goto out_free_trans;
1804         }
1805
1806         /*****************
1807          * 4. Read EEPROM
1808          *****************/
1809         /* Read the EEPROM */
1810         err = iwl_eeprom_init(priv, hw_rev);
1811         if (err) {
1812                 IWL_ERR(priv, "Unable to init EEPROM\n");
1813                 goto out_free_trans;
1814         }
1815         err = iwl_eeprom_check_version(priv);
1816         if (err)
1817                 goto out_free_eeprom;
1818
1819         err = iwl_eeprom_check_sku(priv);
1820         if (err)
1821                 goto out_free_eeprom;
1822
1823         /* extract MAC Address */
1824         iwl_eeprom_get_mac(priv->shrd, priv->addresses[0].addr);
1825         IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
1826         priv->hw->wiphy->addresses = priv->addresses;
1827         priv->hw->wiphy->n_addresses = 1;
1828         num_mac = iwl_eeprom_query16(priv->shrd, EEPROM_NUM_MAC_ADDRESS);
1829         if (num_mac > 1) {
1830                 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
1831                        ETH_ALEN);
1832                 priv->addresses[1].addr[5]++;
1833                 priv->hw->wiphy->n_addresses++;
1834         }
1835
1836         /************************
1837          * 5. Setup HW constants
1838          ************************/
1839         if (iwl_set_hw_params(priv)) {
1840                 err = -ENOENT;
1841                 IWL_ERR(priv, "failed to set hw parameters\n");
1842                 goto out_free_eeprom;
1843         }
1844
1845         /*******************
1846          * 6. Setup priv
1847          *******************/
1848
1849         err = iwl_init_drv(priv);
1850         if (err)
1851                 goto out_free_eeprom;
1852         /* At this point both hw and priv are initialized. */
1853
1854         /********************
1855          * 7. Setup services
1856          ********************/
1857         iwl_setup_deferred_work(priv);
1858         iwl_setup_rx_handlers(priv);
1859         iwl_testmode_init(priv);
1860
1861         /*********************************************
1862          * 8. Enable interrupts
1863          *********************************************/
1864
1865         iwl_enable_rfkill_int(priv);
1866
1867         /* If platform's RF_KILL switch is NOT set to KILL */
1868         if (iwl_read32(bus(priv),
1869                         CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
1870                 clear_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1871         else
1872                 set_bit(STATUS_RF_KILL_HW, &priv->shrd->status);
1873
1874         wiphy_rfkill_set_hw_state(priv->hw->wiphy,
1875                 test_bit(STATUS_RF_KILL_HW, &priv->shrd->status));
1876
1877         iwl_power_initialize(priv);
1878         iwl_tt_initialize(priv);
1879
1880         init_completion(&priv->firmware_loading_complete);
1881
1882         err = iwl_request_firmware(priv, true);
1883         if (err)
1884                 goto out_destroy_workqueue;
1885
1886         return 0;
1887
1888 out_destroy_workqueue:
1889         destroy_workqueue(priv->shrd->workqueue);
1890         priv->shrd->workqueue = NULL;
1891         iwl_uninit_drv(priv);
1892 out_free_eeprom:
1893         iwl_eeprom_free(priv->shrd);
1894 out_free_trans:
1895         iwl_trans_free(trans(priv));
1896 out_free_traffic_mem:
1897         iwl_free_traffic_mem(priv);
1898         ieee80211_free_hw(priv->hw);
1899 out:
1900         return err;
1901 }
1902
1903 void __devexit iwl_remove(struct iwl_priv * priv)
1904 {
1905         wait_for_completion(&priv->firmware_loading_complete);
1906
1907         IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
1908
1909         iwl_dbgfs_unregister(priv);
1910
1911         /* ieee80211_unregister_hw call wil cause iwlagn_mac_stop to
1912          * to be called and iwl_down since we are removing the device
1913          * we need to set STATUS_EXIT_PENDING bit.
1914          */
1915         set_bit(STATUS_EXIT_PENDING, &priv->shrd->status);
1916
1917         iwl_testmode_cleanup(priv);
1918         iwl_leds_exit(priv);
1919
1920         if (priv->mac80211_registered) {
1921                 ieee80211_unregister_hw(priv->hw);
1922                 priv->mac80211_registered = 0;
1923         }
1924
1925         iwl_tt_exit(priv);
1926
1927         /*This will stop the queues, move the device to low power state */
1928         iwl_trans_stop_device(trans(priv));
1929
1930         iwl_dealloc_ucode(trans(priv));
1931
1932         iwl_eeprom_free(priv->shrd);
1933
1934         /*netif_stop_queue(dev); */
1935         flush_workqueue(priv->shrd->workqueue);
1936
1937         /* ieee80211_unregister_hw calls iwlagn_mac_stop, which flushes
1938          * priv->shrd->workqueue... so we can't take down the workqueue
1939          * until now... */
1940         destroy_workqueue(priv->shrd->workqueue);
1941         priv->shrd->workqueue = NULL;
1942         iwl_free_traffic_mem(priv);
1943
1944         iwl_trans_free(trans(priv));
1945
1946         iwl_uninit_drv(priv);
1947
1948         dev_kfree_skb(priv->beacon_skb);
1949
1950         ieee80211_free_hw(priv->hw);
1951 }
1952
1953
1954 /*****************************************************************************
1955  *
1956  * driver and module entry point
1957  *
1958  *****************************************************************************/
1959 static int __init iwl_init(void)
1960 {
1961
1962         int ret;
1963         pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
1964         pr_info(DRV_COPYRIGHT "\n");
1965
1966         ret = iwlagn_rate_control_register();
1967         if (ret) {
1968                 pr_err("Unable to register rate control algorithm: %d\n", ret);
1969                 return ret;
1970         }
1971
1972         ret = iwl_pci_register_driver();
1973
1974         if (ret)
1975                 goto error_register;
1976         return ret;
1977
1978 error_register:
1979         iwlagn_rate_control_unregister();
1980         return ret;
1981 }
1982
1983 static void __exit iwl_exit(void)
1984 {
1985         iwl_pci_unregister_driver();
1986         iwlagn_rate_control_unregister();
1987 }
1988
1989 module_exit(iwl_exit);
1990 module_init(iwl_init);
1991
1992 #ifdef CONFIG_IWLWIFI_DEBUG
1993 module_param_named(debug, iwlagn_mod_params.debug_level, uint,
1994                    S_IRUGO | S_IWUSR);
1995 MODULE_PARM_DESC(debug, "debug output mask");
1996 #endif
1997
1998 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
1999 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
2000 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
2001 MODULE_PARM_DESC(queues_num, "number of hw queues.");
2002 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
2003 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
2004 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
2005                    int, S_IRUGO);
2006 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
2007 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
2008 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
2009
2010 module_param_named(ucode_alternative,
2011                    iwlagn_mod_params.wanted_ucode_alternative,
2012                    int, S_IRUGO);
2013 MODULE_PARM_DESC(ucode_alternative,
2014                  "specify ucode alternative to use from ucode file");
2015
2016 module_param_named(antenna_coupling, iwlagn_mod_params.ant_coupling,
2017                    int, S_IRUGO);
2018 MODULE_PARM_DESC(antenna_coupling,
2019                  "specify antenna coupling in dB (defualt: 0 dB)");
2020
2021 module_param_named(bt_ch_inhibition, iwlagn_mod_params.bt_ch_announce,
2022                    bool, S_IRUGO);
2023 MODULE_PARM_DESC(bt_ch_inhibition,
2024                  "Enable BT channel inhibition (default: enable)");
2025
2026 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
2027 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
2028
2029 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
2030 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
2031
2032 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, int, S_IRUGO);
2033 MODULE_PARM_DESC(wd_disable,
2034                 "Disable stuck queue watchdog timer 0=system default, "
2035                 "1=disable, 2=enable (default: 0)");
2036
2037 /*
2038  * set bt_coex_active to true, uCode will do kill/defer
2039  * every time the priority line is asserted (BT is sending signals on the
2040  * priority line in the PCIx).
2041  * set bt_coex_active to false, uCode will ignore the BT activity and
2042  * perform the normal operation
2043  *
2044  * User might experience transmit issue on some platform due to WiFi/BT
2045  * co-exist problem. The possible behaviors are:
2046  *   Able to scan and finding all the available AP
2047  *   Not able to associate with any AP
2048  * On those platforms, WiFi communication can be restored by set
2049  * "bt_coex_active" module parameter to "false"
2050  *
2051  * default: bt_coex_active = true (BT_COEX_ENABLE)
2052  */
2053 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
2054                 bool, S_IRUGO);
2055 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
2056
2057 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
2058 MODULE_PARM_DESC(led_mode, "0=system default, "
2059                 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
2060
2061 module_param_named(power_save, iwlagn_mod_params.power_save,
2062                 bool, S_IRUGO);
2063 MODULE_PARM_DESC(power_save,
2064                  "enable WiFi power management (default: disable)");
2065
2066 module_param_named(power_level, iwlagn_mod_params.power_level,
2067                 int, S_IRUGO);
2068 MODULE_PARM_DESC(power_level,
2069                  "default power save level (range from 1 - 5, default: 1)");
2070
2071 module_param_named(auto_agg, iwlagn_mod_params.auto_agg,
2072                 bool, S_IRUGO);
2073 MODULE_PARM_DESC(auto_agg,
2074                  "enable agg w/o check traffic load (default: enable)");
2075
2076 /*
2077  * For now, keep using power level 1 instead of automatically
2078  * adjusting ...
2079  */
2080 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
2081                 bool, S_IRUGO);
2082 MODULE_PARM_DESC(no_sleep_autoadjust,
2083                  "don't automatically adjust sleep level "
2084                  "according to maximum network latency (default: true)");