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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 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  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.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.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 211                 return 1;
 212
 213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 214          * be updated with the RXON_ASSOC command -- however only some
 215          * flag transitions are allowed using RXON_ASSOC */
 216
 217         /* Check if we are not switching bands */
 218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 220                 return 1;
 221
 222         /* Check if we are switching association toggle */
 223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 225                 return 1;
 226
 227         return 0;
 228 }
 229
 230 /**
 231  * iwl_commit_rxon - commit staging_rxon to hardware
 232  *
 233  * The RXON command in staging_rxon is committed to the hardware and
 234  * the active_rxon structure is updated with the new data.  This
 235  * function correctly transitions out of the RXON_ASSOC_MSK state if
 236  * a HW tune is required based on the RXON structure changes.
 237  */
 238 static int iwl_commit_rxon(struct iwl_priv *priv)
 239 {
 240         /* cast away the const for active_rxon in this function */
 241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 242         int ret;
 243         bool new_assoc =
 244                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 245
 246         if (!iwl_is_alive(priv))
 247                 return -EBUSY;
 248
 249         /* always get timestamp with Rx frame */
 250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 251         /* allow CTS-to-self if possible. this is relevant only for
 252          * 5000, but will not damage 4965 */
 253         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 254
 255         ret = iwl_check_rxon_cmd(&priv->staging_rxon);
 256         if (ret) {
 257                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 258                 return -EINVAL;
 259         }
 260
 261         /* If we don't need to send a full RXON, we can use
 262          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 263          * and other flags for the current radio configuration. */
 264         if (!iwl_full_rxon_required(priv)) {
 265                 ret = iwl_send_rxon_assoc(priv);
 266                 if (ret) {
 267                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 268                         return ret;
 269                 }
 270
 271                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 272                 return 0;
 273         }
 274
 275         /* station table will be cleared */
 276         priv->assoc_station_added = 0;
 277
 278         /* If we are currently associated and the new config requires
 279          * an RXON_ASSOC and the new config wants the associated mask enabled,
 280          * we must clear the associated from the active configuration
 281          * before we apply the new config */
 282         if (iwl_is_associated(priv) && new_assoc) {
 283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 285
 286                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 287                                       sizeof(struct iwl_rxon_cmd),
 288                                       &priv->active_rxon);
 289
 290                 /* If the mask clearing failed then we set
 291                  * active_rxon back to what it was previously */
 292                 if (ret) {
 293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 294                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 295                         return ret;
 296                 }
 297         }
 298
 299         IWL_DEBUG_INFO("Sending RXON\n"
 300                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 301                        "* channel = %d\n"
 302                        "* bssid = %pM\n",
 303                        (new_assoc ? "" : "out"),
 304                        le16_to_cpu(priv->staging_rxon.channel),
 305                        priv->staging_rxon.bssid_addr);
 306
 307         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 308
 309         /* Apply the new configuration
 310          * RXON unassoc clears the station table in uCode, send it before
 311          * we add the bcast station. If assoc bit is set, we will send RXON
 312          * after having added the bcast and bssid station.
 313          */
 314         if (!new_assoc) {
 315                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 316                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 317                 if (ret) {
 318                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 319                         return ret;
 320                 }
 321                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 322         }
 323
 324         iwl_clear_stations_table(priv);
 325
 326         if (!priv->error_recovering)
 327                 priv->start_calib = 0;
 328
 329         /* Add the broadcast address so we can send broadcast frames */
 330         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 331                                                 IWL_INVALID_STATION) {
 332                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 333                 return -EIO;
 334         }
 335
 336         /* If we have set the ASSOC_MSK and we are in BSS mode then
 337          * add the IWL_AP_ID to the station rate table */
 338         if (new_assoc) {
 339                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 340                         ret = iwl_rxon_add_station(priv,
 341                                            priv->active_rxon.bssid_addr, 1);
 342                         if (ret == IWL_INVALID_STATION) {
 343                                 IWL_ERROR("Error adding AP address for TX.\n");
 344                                 return -EIO;
 345                         }
 346                         priv->assoc_station_added = 1;
 347                         if (priv->default_wep_key &&
 348                             iwl_send_static_wepkey_cmd(priv, 0))
 349                                 IWL_ERROR("Could not send WEP static key.\n");
 350                 }
 351
 352                 /* Apply the new configuration
 353                  * RXON assoc doesn't clear the station table in uCode,
 354                  */
 355                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 356                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 357                 if (ret) {
 358                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 359                         return ret;
 360                 }
 361                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 362         }
 363
 364         iwl_init_sensitivity(priv);
 365
 366         /* If we issue a new RXON command which required a tune then we must
 367          * send a new TXPOWER command or we won't be able to Tx any frames */
 368         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 369         if (ret) {
 370                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 371                 return ret;
 372         }
 373
 374         return 0;
 375 }
 376
 377 void iwl_update_chain_flags(struct iwl_priv *priv)
 378 {
 379
 380         iwl_set_rxon_chain(priv);
 381         iwl_commit_rxon(priv);
 382 }
 383
 384 static int iwl_send_bt_config(struct iwl_priv *priv)
 385 {
 386         struct iwl4965_bt_cmd bt_cmd = {
 387                 .flags = 3,
 388                 .lead_time = 0xAA,
 389                 .max_kill = 1,
 390                 .kill_ack_mask = 0,
 391                 .kill_cts_mask = 0,
 392         };
 393
 394         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 395                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 396 }
 397
 398 static void iwl_clear_free_frames(struct iwl_priv *priv)
 399 {
 400         struct list_head *element;
 401
 402         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 403                        priv->frames_count);
 404
 405         while (!list_empty(&priv->free_frames)) {
 406                 element = priv->free_frames.next;
 407                 list_del(element);
 408                 kfree(list_entry(element, struct iwl_frame, list));
 409                 priv->frames_count--;
 410         }
 411
 412         if (priv->frames_count) {
 413                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 414                             priv->frames_count);
 415                 priv->frames_count = 0;
 416         }
 417 }
 418
 419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 420 {
 421         struct iwl_frame *frame;
 422         struct list_head *element;
 423         if (list_empty(&priv->free_frames)) {
 424                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 425                 if (!frame) {
 426                         IWL_ERROR("Could not allocate frame!\n");
 427                         return NULL;
 428                 }
 429
 430                 priv->frames_count++;
 431                 return frame;
 432         }
 433
 434         element = priv->free_frames.next;
 435         list_del(element);
 436         return list_entry(element, struct iwl_frame, list);
 437 }
 438
 439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 440 {
 441         memset(frame, 0, sizeof(*frame));
 442         list_add(&frame->list, &priv->free_frames);
 443 }
 444
 445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 446                                           struct ieee80211_hdr *hdr,
 447                                           const u8 *dest, int left)
 448 {
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 451              (priv->iw_mode != NL80211_IFTYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 470         else
 471                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 488                                        struct iwl_frame *frame, u8 rate)
 489 {
 490         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 491         unsigned int frame_size;
 492
 493         tx_beacon_cmd = &frame->u.beacon;
 494         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 495
 496         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 497         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 498
 499         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 500                                 iwl_bcast_addr,
 501                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 502
 503         BUG_ON(frame_size > MAX_MPDU_SIZE);
 504         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 505
 506         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 507                 tx_beacon_cmd->tx.rate_n_flags =
 508                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 509         else
 510                 tx_beacon_cmd->tx.rate_n_flags =
 511                         iwl_hw_set_rate_n_flags(rate, 0);
 512
 513         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 514                                      TX_CMD_FLG_TSF_MSK |
 515                                      TX_CMD_FLG_STA_RATE_MSK;
 516
 517         return sizeof(*tx_beacon_cmd) + frame_size;
 518 }
 519 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 520 {
 521         struct iwl_frame *frame;
 522         unsigned int frame_size;
 523         int rc;
 524         u8 rate;
 525
 526         frame = iwl_get_free_frame(priv);
 527
 528         if (!frame) {
 529                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 530                           "command.\n");
 531                 return -ENOMEM;
 532         }
 533
 534         rate = iwl_rate_get_lowest_plcp(priv);
 535
 536         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 537
 538         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 539                               &frame->u.cmd[0]);
 540
 541         iwl_free_frame(priv, frame);
 542
 543         return rc;
 544 }
 545
 546 /******************************************************************************
 547  *
 548  * Misc. internal state and helper functions
 549  *
 550  ******************************************************************************/
 551
 552 static void iwl_ht_conf(struct iwl_priv *priv,
 553                             struct ieee80211_bss_conf *bss_conf)
 554 {
 555         struct ieee80211_sta_ht_cap *ht_conf;
 556         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 557         struct ieee80211_sta *sta;
 558
 559         IWL_DEBUG_MAC80211("enter: \n");
 560
 561         if (!iwl_conf->is_ht)
 562                 return;
 563
 564
 565         /*
 566          * It is totally wrong to base global information on something
 567          * that is valid only when associated, alas, this driver works
 568          * that way and I don't know how to fix it.
 569          */
 570
 571         rcu_read_lock();
 572         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 573         if (!sta) {
 574                 rcu_read_unlock();
 575                 return;
 576         }
 577         ht_conf = &sta->ht_cap;
 578
 579         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 580                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 581         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 582                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 583
 584         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 585         iwl_conf->max_amsdu_size =
 586                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 587
 588         iwl_conf->supported_chan_width =
 589                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 590
 591         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
 592         /* If no above or below channel supplied disable FAT channel */
 593         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 594             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 595                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 596                 iwl_conf->supported_chan_width = 0;
 597         }
 598
 599         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 600
 601         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 602
 603         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
 604         iwl_conf->ht_protection =
 605                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 606         iwl_conf->non_GF_STA_present =
 607                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 608
 609         rcu_read_unlock();
 610
 611         IWL_DEBUG_MAC80211("leave\n");
 612 }
 613
 614 /*
 615  * QoS  support
 616 */
 617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 618 {
 619         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 620                 return;
 621
 622         if (!priv->qos_data.qos_enable)
 623                 return;
 624
 625         priv->qos_data.def_qos_parm.qos_flags = 0;
 626
 627         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 628             !priv->qos_data.qos_cap.q_AP.txop_request)
 629                 priv->qos_data.def_qos_parm.qos_flags |=
 630                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 631         if (priv->qos_data.qos_active)
 632                 priv->qos_data.def_qos_parm.qos_flags |=
 633                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 634
 635         if (priv->current_ht_config.is_ht)
 636                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 637
 638         if (force || iwl_is_associated(priv)) {
 639                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 640                                 priv->qos_data.qos_active,
 641                                 priv->qos_data.def_qos_parm.qos_flags);
 642
 643                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 644                                        sizeof(struct iwl_qosparam_cmd),
 645                                        &priv->qos_data.def_qos_parm, NULL);
 646         }
 647 }
 648
 649 #define MAX_UCODE_BEACON_INTERVAL       4096
 650
 651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 652 {
 653         u16 new_val = 0;
 654         u16 beacon_factor = 0;
 655
 656         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 657                                         / MAX_UCODE_BEACON_INTERVAL;
 658         new_val = beacon_val / beacon_factor;
 659
 660         return new_val;
 661 }
 662
 663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 664 {
 665         u64 tsf;
 666         s32 interval_tm, rem;
 667         unsigned long flags;
 668         struct ieee80211_conf *conf = NULL;
 669         u16 beacon_int = 0;
 670
 671         conf = ieee80211_get_hw_conf(priv->hw);
 672
 673         spin_lock_irqsave(&priv->lock, flags);
 674         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 675         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 676
 677         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 678                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 679                 priv->rxon_timing.atim_window = 0;
 680         } else {
 681                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 682
 683                 /* TODO: we need to get atim_window from upper stack
 684                  * for now we set to 0 */
 685                 priv->rxon_timing.atim_window = 0;
 686         }
 687
 688         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 689
 690         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 691         interval_tm = beacon_int * 1024;
 692         rem = do_div(tsf, interval_tm);
 693         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 694
 695         spin_unlock_irqrestore(&priv->lock, flags);
 696         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 697                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 698                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 699                         le16_to_cpu(priv->rxon_timing.atim_window));
 700 }
 701
 702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 703                                    enum ieee80211_band band)
 704 {
 705         if (band == IEEE80211_BAND_5GHZ) {
 706                 priv->staging_rxon.flags &=
 707                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 708                       | RXON_FLG_CCK_MSK);
 709                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 710         } else {
 711                 /* Copied from iwl_post_associate() */
 712                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 713                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 714                 else
 715                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 716
 717                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 718                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 719
 720                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 721                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 722                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 723         }
 724 }
 725
 726 /*
 727  * initialize rxon structure with default values from eeprom
 728  */
 729 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 730 {
 731         const struct iwl_channel_info *ch_info;
 732
 733         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 734
 735         switch (mode) {
 736         case NL80211_IFTYPE_AP:
 737                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 738                 break;
 739
 740         case NL80211_IFTYPE_STATION:
 741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 742                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 743                 break;
 744
 745         case NL80211_IFTYPE_ADHOC:
 746                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 747                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 748                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 749                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case NL80211_IFTYPE_MONITOR:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 754                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 755                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 756                 break;
 757         default:
 758                 IWL_ERROR("Unsupported interface type %d\n", mode);
 759                 break;
 760         }
 761
 762 #if 0
 763         /* TODO:  Figure out when short_preamble would be set and cache from
 764          * that */
 765         if (!hw_to_local(priv->hw)->short_preamble)
 766                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 767         else
 768                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 769 #endif
 770
 771         ch_info = iwl_get_channel_info(priv, priv->band,
 772                                        le16_to_cpu(priv->active_rxon.channel));
 773
 774         if (!ch_info)
 775                 ch_info = &priv->channel_info[0];
 776
 777         /*
 778          * in some case A channels are all non IBSS
 779          * in this case force B/G channel
 780          */
 781         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 782             !(is_channel_ibss(ch_info)))
 783                 ch_info = &priv->channel_info[0];
 784
 785         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 786         priv->band = ch_info->band;
 787
 788         iwl_set_flags_for_band(priv, priv->band);
 789
 790         priv->staging_rxon.ofdm_basic_rates =
 791             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 792         priv->staging_rxon.cck_basic_rates =
 793             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 796                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 798         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 799         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 800         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 801         iwl_set_rxon_chain(priv);
 802 }
 803
 804 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 805 {
 806         iwl_connection_init_rx_config(priv, mode);
 807         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 808
 809         iwl_clear_stations_table(priv);
 810
 811         /* dont commit rxon if rf-kill is on*/
 812         if (!iwl_is_ready_rf(priv))
 813                 return -EAGAIN;
 814
 815         cancel_delayed_work(&priv->scan_check);
 816         if (iwl_scan_cancel_timeout(priv, 100)) {
 817                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 818                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 819                 return -EAGAIN;
 820         }
 821
 822         iwl_commit_rxon(priv);
 823
 824         return 0;
 825 }
 826
 827 static void iwl_set_rate(struct iwl_priv *priv)
 828 {
 829         const struct ieee80211_supported_band *hw = NULL;
 830         struct ieee80211_rate *rate;
 831         int i;
 832
 833         hw = iwl_get_hw_mode(priv, priv->band);
 834         if (!hw) {
 835                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 836                 return;
 837         }
 838
 839         priv->active_rate = 0;
 840         priv->active_rate_basic = 0;
 841
 842         for (i = 0; i < hw->n_bitrates; i++) {
 843                 rate = &(hw->bitrates[i]);
 844                 if (rate->hw_value < IWL_RATE_COUNT)
 845                         priv->active_rate |= (1 << rate->hw_value);
 846         }
 847
 848         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 849                        priv->active_rate, priv->active_rate_basic);
 850
 851         /*
 852          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 853          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 854          * OFDM
 855          */
 856         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 857                 priv->staging_rxon.cck_basic_rates =
 858                     ((priv->active_rate_basic &
 859                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 860         else
 861                 priv->staging_rxon.cck_basic_rates =
 862                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 863
 864         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 865                 priv->staging_rxon.ofdm_basic_rates =
 866                     ((priv->active_rate_basic &
 867                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 868                       IWL_FIRST_OFDM_RATE) & 0xFF;
 869         else
 870                 priv->staging_rxon.ofdm_basic_rates =
 871                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 872 }
 873
 874
 875 /******************************************************************************
 876  *
 877  * Generic RX handler implementations
 878  *
 879  ******************************************************************************/
 880 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 881                                 struct iwl_rx_mem_buffer *rxb)
 882 {
 883         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 884         struct iwl_alive_resp *palive;
 885         struct delayed_work *pwork;
 886
 887         palive = &pkt->u.alive_frame;
 888
 889         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 890                        "0x%01X 0x%01X\n",
 891                        palive->is_valid, palive->ver_type,
 892                        palive->ver_subtype);
 893
 894         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 895                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 896                 memcpy(&priv->card_alive_init,
 897                        &pkt->u.alive_frame,
 898                        sizeof(struct iwl_init_alive_resp));
 899                 pwork = &priv->init_alive_start;
 900         } else {
 901                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 902                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 903                        sizeof(struct iwl_alive_resp));
 904                 pwork = &priv->alive_start;
 905         }
 906
 907         /* We delay the ALIVE response by 5ms to
 908          * give the HW RF Kill time to activate... */
 909         if (palive->is_valid == UCODE_VALID_OK)
 910                 queue_delayed_work(priv->workqueue, pwork,
 911                                    msecs_to_jiffies(5));
 912         else
 913                 IWL_WARNING("uCode did not respond OK.\n");
 914 }
 915
 916 static void iwl_rx_reply_error(struct iwl_priv *priv,
 917                                    struct iwl_rx_mem_buffer *rxb)
 918 {
 919         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 920
 921         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 922                 "seq 0x%04X ser 0x%08X\n",
 923                 le32_to_cpu(pkt->u.err_resp.error_type),
 924                 get_cmd_string(pkt->u.err_resp.cmd_id),
 925                 pkt->u.err_resp.cmd_id,
 926                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 927                 le32_to_cpu(pkt->u.err_resp.error_info));
 928 }
 929
 930 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 931
 932 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 933 {
 934         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 935         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 936         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
 937         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 938                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 939         rxon->channel = csa->channel;
 940         priv->staging_rxon.channel = csa->channel;
 941 }
 942
 943 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 944                                       struct iwl_rx_mem_buffer *rxb)
 945 {
 946 #ifdef CONFIG_IWLWIFI_DEBUG
 947         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 948         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
 949         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 950                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 951 #endif
 952 }
 953
 954 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 955                                              struct iwl_rx_mem_buffer *rxb)
 956 {
 957         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 958         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 959                         "notification for %s:\n",
 960                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 961         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 962 }
 963
 964 static void iwl_bg_beacon_update(struct work_struct *work)
 965 {
 966         struct iwl_priv *priv =
 967                 container_of(work, struct iwl_priv, beacon_update);
 968         struct sk_buff *beacon;
 969
 970         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 971         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 972
 973         if (!beacon) {
 974                 IWL_ERROR("update beacon failed\n");
 975                 return;
 976         }
 977
 978         mutex_lock(&priv->mutex);
 979         /* new beacon skb is allocated every time; dispose previous.*/
 980         if (priv->ibss_beacon)
 981                 dev_kfree_skb(priv->ibss_beacon);
 982
 983         priv->ibss_beacon = beacon;
 984         mutex_unlock(&priv->mutex);
 985
 986         iwl_send_beacon_cmd(priv);
 987 }
 988
 989 /**
 990  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 991  *
 992  * This callback is provided in order to send a statistics request.
 993  *
 994  * This timer function is continually reset to execute within
 995  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 996  * was received.  We need to ensure we receive the statistics in order
 997  * to update the temperature used for calibrating the TXPOWER.
 998  */
 999 static void iwl_bg_statistics_periodic(unsigned long data)
1000 {
1001         struct iwl_priv *priv = (struct iwl_priv *)data;
1002
1003         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1004                 return;
1005
1006         /* dont send host command if rf-kill is on */
1007         if (!iwl_is_ready_rf(priv))
1008                 return;
1009
1010         iwl_send_statistics_request(priv, CMD_ASYNC);
1011 }
1012
1013 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
1014                                 struct iwl_rx_mem_buffer *rxb)
1015 {
1016 #ifdef CONFIG_IWLWIFI_DEBUG
1017         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1019         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1020
1021         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1022                 "tsf %d %d rate %d\n",
1023                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1024                 beacon->beacon_notify_hdr.failure_frame,
1025                 le32_to_cpu(beacon->ibss_mgr_status),
1026                 le32_to_cpu(beacon->high_tsf),
1027                 le32_to_cpu(beacon->low_tsf), rate);
1028 #endif
1029
1030         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1031             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1032                 queue_work(priv->workqueue, &priv->beacon_update);
1033 }
1034
1035 /* Handle notification from uCode that card's power state is changing
1036  * due to software, hardware, or critical temperature RFKILL */
1037 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
1038                                     struct iwl_rx_mem_buffer *rxb)
1039 {
1040         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1041         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1042         unsigned long status = priv->status;
1043
1044         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1045                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1046                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1047
1048         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1049                      RF_CARD_DISABLED)) {
1050
1051                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1052                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1053
1054                 if (!iwl_grab_nic_access(priv)) {
1055                         iwl_write_direct32(
1056                                 priv, HBUS_TARG_MBX_C,
1057                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1058
1059                         iwl_release_nic_access(priv);
1060                 }
1061
1062                 if (!(flags & RXON_CARD_DISABLED)) {
1063                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1064                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1065                         if (!iwl_grab_nic_access(priv)) {
1066                                 iwl_write_direct32(
1067                                         priv, HBUS_TARG_MBX_C,
1068                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1069
1070                                 iwl_release_nic_access(priv);
1071                         }
1072                 }
1073
1074                 if (flags & RF_CARD_DISABLED) {
1075                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1076                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1077                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1078                         if (!iwl_grab_nic_access(priv))
1079                                 iwl_release_nic_access(priv);
1080                 }
1081         }
1082
1083         if (flags & HW_CARD_DISABLED)
1084                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1085         else
1086                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1087
1088
1089         if (flags & SW_CARD_DISABLED)
1090                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1091         else
1092                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1093
1094         if (!(flags & RXON_CARD_DISABLED))
1095                 iwl_scan_cancel(priv);
1096
1097         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1098              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1099             (test_bit(STATUS_RF_KILL_SW, &status) !=
1100              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1101                 queue_work(priv->workqueue, &priv->rf_kill);
1102         else
1103                 wake_up_interruptible(&priv->wait_command_queue);
1104 }
1105
1106 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1107 {
1108         int ret;
1109         unsigned long flags;
1110
1111         spin_lock_irqsave(&priv->lock, flags);
1112         ret = iwl_grab_nic_access(priv);
1113         if (ret)
1114                 goto err;
1115
1116         if (src == IWL_PWR_SRC_VAUX) {
1117                 u32 val;
1118                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1119                                             &val);
1120
1121                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1122                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1123                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1124                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1125         } else {
1126                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1127                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1128                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1129         }
1130
1131         iwl_release_nic_access(priv);
1132 err:
1133         spin_unlock_irqrestore(&priv->lock, flags);
1134         return ret;
1135 }
1136
1137 /**
1138  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1139  *
1140  * Setup the RX handlers for each of the reply types sent from the uCode
1141  * to the host.
1142  *
1143  * This function chains into the hardware specific files for them to setup
1144  * any hardware specific handlers as well.
1145  */
1146 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1147 {
1148         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1149         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1150         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1151         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1152         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1153             iwl_rx_pm_debug_statistics_notif;
1154         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1155
1156         /*
1157          * The same handler is used for both the REPLY to a discrete
1158          * statistics request from the host as well as for the periodic
1159          * statistics notifications (after received beacons) from the uCode.
1160          */
1161         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1162         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1163
1164         iwl_setup_spectrum_handlers(priv);
1165         iwl_setup_rx_scan_handlers(priv);
1166
1167         /* status change handler */
1168         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1169
1170         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1171             iwl_rx_missed_beacon_notif;
1172         /* Rx handlers */
1173         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1174         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1175         /* block ack */
1176         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1177         /* Set up hardware specific Rx handlers */
1178         priv->cfg->ops->lib->rx_handler_setup(priv);
1179 }
1180
1181 /*
1182  * this should be called while priv->lock is locked
1183 */
1184 static void __iwl_rx_replenish(struct iwl_priv *priv)
1185 {
1186         iwl_rx_allocate(priv);
1187         iwl_rx_queue_restock(priv);
1188 }
1189
1190
1191 /**
1192  * iwl_rx_handle - Main entry function for receiving responses from uCode
1193  *
1194  * Uses the priv->rx_handlers callback function array to invoke
1195  * the appropriate handlers, including command responses,
1196  * frame-received notifications, and other notifications.
1197  */
1198 void iwl_rx_handle(struct iwl_priv *priv)
1199 {
1200         struct iwl_rx_mem_buffer *rxb;
1201         struct iwl_rx_packet *pkt;
1202         struct iwl_rx_queue *rxq = &priv->rxq;
1203         u32 r, i;
1204         int reclaim;
1205         unsigned long flags;
1206         u8 fill_rx = 0;
1207         u32 count = 8;
1208
1209         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1210          * buffer that the driver may process (last buffer filled by ucode). */
1211         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1212         i = rxq->read;
1213
1214         /* Rx interrupt, but nothing sent from uCode */
1215         if (i == r)
1216                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1217
1218         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1219                 fill_rx = 1;
1220
1221         while (i != r) {
1222                 rxb = rxq->queue[i];
1223
1224                 /* If an RXB doesn't have a Rx queue slot associated with it,
1225                  * then a bug has been introduced in the queue refilling
1226                  * routines -- catch it here */
1227                 BUG_ON(rxb == NULL);
1228
1229                 rxq->queue[i] = NULL;
1230
1231                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->aligned_dma_addr,
1232                                             priv->hw_params.rx_buf_size,
1233                                             PCI_DMA_FROMDEVICE);
1234                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1235
1236                 /* Reclaim a command buffer only if this packet is a response
1237                  *   to a (driver-originated) command.
1238                  * If the packet (e.g. Rx frame) originated from uCode,
1239                  *   there is no command buffer to reclaim.
1240                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1241                  *   but apparently a few don't get set; catch them here. */
1242                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1243                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1244                         (pkt->hdr.cmd != REPLY_RX) &&
1245                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1246                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1247                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1248                         (pkt->hdr.cmd != REPLY_TX);
1249
1250                 /* Based on type of command response or notification,
1251                  *   handle those that need handling via function in
1252                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1253                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1254                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1255                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1256                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1257                 } else {
1258                         /* No handling needed */
1259                         IWL_DEBUG(IWL_DL_RX,
1260                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1261                                 r, i, get_cmd_string(pkt->hdr.cmd),
1262                                 pkt->hdr.cmd);
1263                 }
1264
1265                 if (reclaim) {
1266                         /* Invoke any callbacks, transfer the skb to caller, and
1267                          * fire off the (possibly) blocking iwl_send_cmd()
1268                          * as we reclaim the driver command queue */
1269                         if (rxb && rxb->skb)
1270                                 iwl_tx_cmd_complete(priv, rxb);
1271                         else
1272                                 IWL_WARNING("Claim null rxb?\n");
1273                 }
1274
1275                 /* For now we just don't re-use anything.  We can tweak this
1276                  * later to try and re-use notification packets and SKBs that
1277                  * fail to Rx correctly */
1278                 if (rxb->skb != NULL) {
1279                         priv->alloc_rxb_skb--;
1280                         dev_kfree_skb_any(rxb->skb);
1281                         rxb->skb = NULL;
1282                 }
1283
1284                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1285                                  priv->hw_params.rx_buf_size + 256,
1286                                  PCI_DMA_FROMDEVICE);
1287                 spin_lock_irqsave(&rxq->lock, flags);
1288                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1289                 spin_unlock_irqrestore(&rxq->lock, flags);
1290                 i = (i + 1) & RX_QUEUE_MASK;
1291                 /* If there are a lot of unused frames,
1292                  * restock the Rx queue so ucode wont assert. */
1293                 if (fill_rx) {
1294                         count++;
1295                         if (count >= 8) {
1296                                 priv->rxq.read = i;
1297                                 __iwl_rx_replenish(priv);
1298                                 count = 0;
1299                         }
1300                 }
1301         }
1302
1303         /* Backtrack one entry */
1304         priv->rxq.read = i;
1305         iwl_rx_queue_restock(priv);
1306 }
1307
1308 #ifdef CONFIG_IWLWIFI_DEBUG
1309 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1310 {
1311         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1312
1313         IWL_DEBUG_RADIO("RX CONFIG:\n");
1314         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1315         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1316         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1317         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1318                         le32_to_cpu(rxon->filter_flags));
1319         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1320         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1321                         rxon->ofdm_basic_rates);
1322         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1323         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1324         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1325         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1326 }
1327 #endif
1328
1329 static void iwl_enable_interrupts(struct iwl_priv *priv)
1330 {
1331         IWL_DEBUG_ISR("Enabling interrupts\n");
1332         set_bit(STATUS_INT_ENABLED, &priv->status);
1333         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1334 }
1335
1336 /* call this function to flush any scheduled tasklet */
1337 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1338 {
1339         /* wait to make sure we flush pending tasklet*/
1340         synchronize_irq(priv->pci_dev->irq);
1341         tasklet_kill(&priv->irq_tasklet);
1342 }
1343
1344 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1345 {
1346         clear_bit(STATUS_INT_ENABLED, &priv->status);
1347
1348         /* disable interrupts from uCode/NIC to host */
1349         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1350
1351         /* acknowledge/clear/reset any interrupts still pending
1352          * from uCode or flow handler (Rx/Tx DMA) */
1353         iwl_write32(priv, CSR_INT, 0xffffffff);
1354         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1355         IWL_DEBUG_ISR("Disabled interrupts\n");
1356 }
1357
1358
1359 /**
1360  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1361  */
1362 static void iwl_irq_handle_error(struct iwl_priv *priv)
1363 {
1364         /* Set the FW error flag -- cleared on iwl_down */
1365         set_bit(STATUS_FW_ERROR, &priv->status);
1366
1367         /* Cancel currently queued command. */
1368         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1369
1370 #ifdef CONFIG_IWLWIFI_DEBUG
1371         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1372                 iwl_dump_nic_error_log(priv);
1373                 iwl_dump_nic_event_log(priv);
1374                 iwl_print_rx_config_cmd(priv);
1375         }
1376 #endif
1377
1378         wake_up_interruptible(&priv->wait_command_queue);
1379
1380         /* Keep the restart process from trying to send host
1381          * commands by clearing the INIT status bit */
1382         clear_bit(STATUS_READY, &priv->status);
1383
1384         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1385                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1386                           "Restarting adapter due to uCode error.\n");
1387
1388                 if (iwl_is_associated(priv)) {
1389                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1390                                sizeof(priv->recovery_rxon));
1391                         priv->error_recovering = 1;
1392                 }
1393                 if (priv->cfg->mod_params->restart_fw)
1394                         queue_work(priv->workqueue, &priv->restart);
1395         }
1396 }
1397
1398 static void iwl_error_recovery(struct iwl_priv *priv)
1399 {
1400         unsigned long flags;
1401
1402         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1403                sizeof(priv->staging_rxon));
1404         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1405         iwl_commit_rxon(priv);
1406
1407         iwl_rxon_add_station(priv, priv->bssid, 1);
1408
1409         spin_lock_irqsave(&priv->lock, flags);
1410         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1411         priv->error_recovering = 0;
1412         spin_unlock_irqrestore(&priv->lock, flags);
1413 }
1414
1415 static void iwl_irq_tasklet(struct iwl_priv *priv)
1416 {
1417         u32 inta, handled = 0;
1418         u32 inta_fh;
1419         unsigned long flags;
1420 #ifdef CONFIG_IWLWIFI_DEBUG
1421         u32 inta_mask;
1422 #endif
1423
1424         spin_lock_irqsave(&priv->lock, flags);
1425
1426         /* Ack/clear/reset pending uCode interrupts.
1427          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1428          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1429         inta = iwl_read32(priv, CSR_INT);
1430         iwl_write32(priv, CSR_INT, inta);
1431
1432         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1433          * Any new interrupts that happen after this, either while we're
1434          * in this tasklet, or later, will show up in next ISR/tasklet. */
1435         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1436         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1437
1438 #ifdef CONFIG_IWLWIFI_DEBUG
1439         if (priv->debug_level & IWL_DL_ISR) {
1440                 /* just for debug */
1441                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1442                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1443                               inta, inta_mask, inta_fh);
1444         }
1445 #endif
1446
1447         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1448          * atomic, make sure that inta covers all the interrupts that
1449          * we've discovered, even if FH interrupt came in just after
1450          * reading CSR_INT. */
1451         if (inta_fh & CSR49_FH_INT_RX_MASK)
1452                 inta |= CSR_INT_BIT_FH_RX;
1453         if (inta_fh & CSR49_FH_INT_TX_MASK)
1454                 inta |= CSR_INT_BIT_FH_TX;
1455
1456         /* Now service all interrupt bits discovered above. */
1457         if (inta & CSR_INT_BIT_HW_ERR) {
1458                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1459
1460                 /* Tell the device to stop sending interrupts */
1461                 iwl_disable_interrupts(priv);
1462
1463                 iwl_irq_handle_error(priv);
1464
1465                 handled |= CSR_INT_BIT_HW_ERR;
1466
1467                 spin_unlock_irqrestore(&priv->lock, flags);
1468
1469                 return;
1470         }
1471
1472 #ifdef CONFIG_IWLWIFI_DEBUG
1473         if (priv->debug_level & (IWL_DL_ISR)) {
1474                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1475                 if (inta & CSR_INT_BIT_SCD)
1476                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1477                                       "the frame/frames.\n");
1478
1479                 /* Alive notification via Rx interrupt will do the real work */
1480                 if (inta & CSR_INT_BIT_ALIVE)
1481                         IWL_DEBUG_ISR("Alive interrupt\n");
1482         }
1483 #endif
1484         /* Safely ignore these bits for debug checks below */
1485         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1486
1487         /* HW RF KILL switch toggled */
1488         if (inta & CSR_INT_BIT_RF_KILL) {
1489                 int hw_rf_kill = 0;
1490                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1491                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1492                         hw_rf_kill = 1;
1493
1494                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1495                                 hw_rf_kill ? "disable radio" : "enable radio");
1496
1497                 /* driver only loads ucode once setting the interface up.
1498                  * the driver as well won't allow loading if RFKILL is set
1499                  * therefore no need to restart the driver from this handler
1500                  */
1501                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1502                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1503
1504                 handled |= CSR_INT_BIT_RF_KILL;
1505         }
1506
1507         /* Chip got too hot and stopped itself */
1508         if (inta & CSR_INT_BIT_CT_KILL) {
1509                 IWL_ERROR("Microcode CT kill error detected.\n");
1510                 handled |= CSR_INT_BIT_CT_KILL;
1511         }
1512
1513         /* Error detected by uCode */
1514         if (inta & CSR_INT_BIT_SW_ERR) {
1515                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1516                           inta);
1517                 iwl_irq_handle_error(priv);
1518                 handled |= CSR_INT_BIT_SW_ERR;
1519         }
1520
1521         /* uCode wakes up after power-down sleep */
1522         if (inta & CSR_INT_BIT_WAKEUP) {
1523                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1524                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1525                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1526                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1527                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1528                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1529                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1530                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1531
1532                 handled |= CSR_INT_BIT_WAKEUP;
1533         }
1534
1535         /* All uCode command responses, including Tx command responses,
1536          * Rx "responses" (frame-received notification), and other
1537          * notifications from uCode come through here*/
1538         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1539                 iwl_rx_handle(priv);
1540                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1541         }
1542
1543         if (inta & CSR_INT_BIT_FH_TX) {
1544                 IWL_DEBUG_ISR("Tx interrupt\n");
1545                 handled |= CSR_INT_BIT_FH_TX;
1546                 /* FH finished to write, send event */
1547                 priv->ucode_write_complete = 1;
1548                 wake_up_interruptible(&priv->wait_command_queue);
1549         }
1550
1551         if (inta & ~handled)
1552                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1553
1554         if (inta & ~CSR_INI_SET_MASK) {
1555                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1556                          inta & ~CSR_INI_SET_MASK);
1557                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1558         }
1559
1560         /* Re-enable all interrupts */
1561         /* only Re-enable if diabled by irq */
1562         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1563                 iwl_enable_interrupts(priv);
1564
1565 #ifdef CONFIG_IWLWIFI_DEBUG
1566         if (priv->debug_level & (IWL_DL_ISR)) {
1567                 inta = iwl_read32(priv, CSR_INT);
1568                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1569                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1570                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1571                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1572         }
1573 #endif
1574         spin_unlock_irqrestore(&priv->lock, flags);
1575 }
1576
1577 static irqreturn_t iwl_isr(int irq, void *data)
1578 {
1579         struct iwl_priv *priv = data;
1580         u32 inta, inta_mask;
1581         u32 inta_fh;
1582         if (!priv)
1583                 return IRQ_NONE;
1584
1585         spin_lock(&priv->lock);
1586
1587         /* Disable (but don't clear!) interrupts here to avoid
1588          *    back-to-back ISRs and sporadic interrupts from our NIC.
1589          * If we have something to service, the tasklet will re-enable ints.
1590          * If we *don't* have something, we'll re-enable before leaving here. */
1591         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1592         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1593
1594         /* Discover which interrupts are active/pending */
1595         inta = iwl_read32(priv, CSR_INT);
1596         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1597
1598         /* Ignore interrupt if there's nothing in NIC to service.
1599          * This may be due to IRQ shared with another device,
1600          * or due to sporadic interrupts thrown from our NIC. */
1601         if (!inta && !inta_fh) {
1602                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1603                 goto none;
1604         }
1605
1606         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1607                 /* Hardware disappeared. It might have already raised
1608                  * an interrupt */
1609                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1610                 goto unplugged;
1611         }
1612
1613         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1614                       inta, inta_mask, inta_fh);
1615
1616         inta &= ~CSR_INT_BIT_SCD;
1617
1618         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1619         if (likely(inta || inta_fh))
1620                 tasklet_schedule(&priv->irq_tasklet);
1621
1622  unplugged:
1623         spin_unlock(&priv->lock);
1624         return IRQ_HANDLED;
1625
1626  none:
1627         /* re-enable interrupts here since we don't have anything to service. */
1628         /* only Re-enable if diabled by irq */
1629         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1630                 iwl_enable_interrupts(priv);
1631         spin_unlock(&priv->lock);
1632         return IRQ_NONE;
1633 }
1634
1635 /******************************************************************************
1636  *
1637  * uCode download functions
1638  *
1639  ******************************************************************************/
1640
1641 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1642 {
1643         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1644         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1645         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1646         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1647         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1648         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1649 }
1650
1651 static void iwl_nic_start(struct iwl_priv *priv)
1652 {
1653         /* Remove all resets to allow NIC to operate */
1654         iwl_write32(priv, CSR_RESET, 0);
1655 }
1656
1657
1658 /**
1659  * iwl_read_ucode - Read uCode images from disk file.
1660  *
1661  * Copy into buffers for card to fetch via bus-mastering
1662  */
1663 static int iwl_read_ucode(struct iwl_priv *priv)
1664 {
1665         struct iwl_ucode *ucode;
1666         int ret;
1667         const struct firmware *ucode_raw;
1668         const char *name = priv->cfg->fw_name;
1669         u8 *src;
1670         size_t len;
1671         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1672
1673         /* Ask kernel firmware_class module to get the boot firmware off disk.
1674          * request_firmware() is synchronous, file is in memory on return. */
1675         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1676         if (ret < 0) {
1677                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1678                                         name, ret);
1679                 goto error;
1680         }
1681
1682         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1683                        name, ucode_raw->size);
1684
1685         /* Make sure that we got at least our header! */
1686         if (ucode_raw->size < sizeof(*ucode)) {
1687                 IWL_ERROR("File size way too small!\n");
1688                 ret = -EINVAL;
1689                 goto err_release;
1690         }
1691
1692         /* Data from ucode file:  header followed by uCode images */
1693         ucode = (void *)ucode_raw->data;
1694
1695         ver = le32_to_cpu(ucode->ver);
1696         inst_size = le32_to_cpu(ucode->inst_size);
1697         data_size = le32_to_cpu(ucode->data_size);
1698         init_size = le32_to_cpu(ucode->init_size);
1699         init_data_size = le32_to_cpu(ucode->init_data_size);
1700         boot_size = le32_to_cpu(ucode->boot_size);
1701
1702         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1703         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1704                        inst_size);
1705         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1706                        data_size);
1707         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1708                        init_size);
1709         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1710                        init_data_size);
1711         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1712                        boot_size);
1713
1714         /* Verify size of file vs. image size info in file's header */
1715         if (ucode_raw->size < sizeof(*ucode) +
1716                 inst_size + data_size + init_size +
1717                 init_data_size + boot_size) {
1718
1719                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1720                                (int)ucode_raw->size);
1721                 ret = -EINVAL;
1722                 goto err_release;
1723         }
1724
1725         /* Verify that uCode images will fit in card's SRAM */
1726         if (inst_size > priv->hw_params.max_inst_size) {
1727                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1728                                inst_size);
1729                 ret = -EINVAL;
1730                 goto err_release;
1731         }
1732
1733         if (data_size > priv->hw_params.max_data_size) {
1734                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1735                                 data_size);
1736                 ret = -EINVAL;
1737                 goto err_release;
1738         }
1739         if (init_size > priv->hw_params.max_inst_size) {
1740                 IWL_DEBUG_INFO
1741                     ("uCode init instr len %d too large to fit in\n",
1742                       init_size);
1743                 ret = -EINVAL;
1744                 goto err_release;
1745         }
1746         if (init_data_size > priv->hw_params.max_data_size) {
1747                 IWL_DEBUG_INFO
1748                     ("uCode init data len %d too large to fit in\n",
1749                       init_data_size);
1750                 ret = -EINVAL;
1751                 goto err_release;
1752         }
1753         if (boot_size > priv->hw_params.max_bsm_size) {
1754                 IWL_DEBUG_INFO
1755                     ("uCode boot instr len %d too large to fit in\n",
1756                       boot_size);
1757                 ret = -EINVAL;
1758                 goto err_release;
1759         }
1760
1761         /* Allocate ucode buffers for card's bus-master loading ... */
1762
1763         /* Runtime instructions and 2 copies of data:
1764          * 1) unmodified from disk
1765          * 2) backup cache for save/restore during power-downs */
1766         priv->ucode_code.len = inst_size;
1767         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1768
1769         priv->ucode_data.len = data_size;
1770         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1771
1772         priv->ucode_data_backup.len = data_size;
1773         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1774
1775         /* Initialization instructions and data */
1776         if (init_size && init_data_size) {
1777                 priv->ucode_init.len = init_size;
1778                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1779
1780                 priv->ucode_init_data.len = init_data_size;
1781                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1782
1783                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1784                         goto err_pci_alloc;
1785         }
1786
1787         /* Bootstrap (instructions only, no data) */
1788         if (boot_size) {
1789                 priv->ucode_boot.len = boot_size;
1790                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1791
1792                 if (!priv->ucode_boot.v_addr)
1793                         goto err_pci_alloc;
1794         }
1795
1796         /* Copy images into buffers for card's bus-master reads ... */
1797
1798         /* Runtime instructions (first block of data in file) */
1799         src = &ucode->data[0];
1800         len = priv->ucode_code.len;
1801         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1802         memcpy(priv->ucode_code.v_addr, src, len);
1803         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1804                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1805
1806         /* Runtime data (2nd block)
1807          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1808         src = &ucode->data[inst_size];
1809         len = priv->ucode_data.len;
1810         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1811         memcpy(priv->ucode_data.v_addr, src, len);
1812         memcpy(priv->ucode_data_backup.v_addr, src, len);
1813
1814         /* Initialization instructions (3rd block) */
1815         if (init_size) {
1816                 src = &ucode->data[inst_size + data_size];
1817                 len = priv->ucode_init.len;
1818                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1819                                 len);
1820                 memcpy(priv->ucode_init.v_addr, src, len);
1821         }
1822
1823         /* Initialization data (4th block) */
1824         if (init_data_size) {
1825                 src = &ucode->data[inst_size + data_size + init_size];
1826                 len = priv->ucode_init_data.len;
1827                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1828                                len);
1829                 memcpy(priv->ucode_init_data.v_addr, src, len);
1830         }
1831
1832         /* Bootstrap instructions (5th block) */
1833         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1834         len = priv->ucode_boot.len;
1835         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1836         memcpy(priv->ucode_boot.v_addr, src, len);
1837
1838         /* We have our copies now, allow OS release its copies */
1839         release_firmware(ucode_raw);
1840         return 0;
1841
1842  err_pci_alloc:
1843         IWL_ERROR("failed to allocate pci memory\n");
1844         ret = -ENOMEM;
1845         iwl_dealloc_ucode_pci(priv);
1846
1847  err_release:
1848         release_firmware(ucode_raw);
1849
1850  error:
1851         return ret;
1852 }
1853
1854 /* temporary */
1855 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1856                                  struct sk_buff *skb);
1857
1858 /**
1859  * iwl_alive_start - called after REPLY_ALIVE notification received
1860  *                   from protocol/runtime uCode (initialization uCode's
1861  *                   Alive gets handled by iwl_init_alive_start()).
1862  */
1863 static void iwl_alive_start(struct iwl_priv *priv)
1864 {
1865         int ret = 0;
1866
1867         IWL_DEBUG_INFO("Runtime Alive received.\n");
1868
1869         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1870                 /* We had an error bringing up the hardware, so take it
1871                  * all the way back down so we can try again */
1872                 IWL_DEBUG_INFO("Alive failed.\n");
1873                 goto restart;
1874         }
1875
1876         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1877          * This is a paranoid check, because we would not have gotten the
1878          * "runtime" alive if code weren't properly loaded.  */
1879         if (iwl_verify_ucode(priv)) {
1880                 /* Runtime instruction load was bad;
1881                  * take it all the way back down so we can try again */
1882                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1883                 goto restart;
1884         }
1885
1886         iwl_clear_stations_table(priv);
1887         ret = priv->cfg->ops->lib->alive_notify(priv);
1888         if (ret) {
1889                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1890                             ret);
1891                 goto restart;
1892         }
1893
1894         /* After the ALIVE response, we can send host commands to the uCode */
1895         set_bit(STATUS_ALIVE, &priv->status);
1896
1897         if (iwl_is_rfkill(priv))
1898                 return;
1899
1900         ieee80211_wake_queues(priv->hw);
1901
1902         priv->active_rate = priv->rates_mask;
1903         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1904
1905         if (iwl_is_associated(priv)) {
1906                 struct iwl_rxon_cmd *active_rxon =
1907                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1908
1909                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1910                        sizeof(priv->staging_rxon));
1911                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1912         } else {
1913                 /* Initialize our rx_config data */
1914                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1915                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1916         }
1917
1918         /* Configure Bluetooth device coexistence support */
1919         iwl_send_bt_config(priv);
1920
1921         iwl_reset_run_time_calib(priv);
1922
1923         /* Configure the adapter for unassociated operation */
1924         iwl_commit_rxon(priv);
1925
1926         /* At this point, the NIC is initialized and operational */
1927         iwl_rf_kill_ct_config(priv);
1928
1929         iwl_leds_register(priv);
1930
1931         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1932         set_bit(STATUS_READY, &priv->status);
1933         wake_up_interruptible(&priv->wait_command_queue);
1934
1935         if (priv->error_recovering)
1936                 iwl_error_recovery(priv);
1937
1938         iwl_power_update_mode(priv, 1);
1939
1940         /* reassociate for ADHOC mode */
1941         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1942                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1943                                                                 priv->vif);
1944                 if (beacon)
1945                         iwl_mac_beacon_update(priv->hw, beacon);
1946         }
1947
1948
1949         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1950                 iwl_set_mode(priv, priv->iw_mode);
1951
1952         return;
1953
1954  restart:
1955         queue_work(priv->workqueue, &priv->restart);
1956 }
1957
1958 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1959
1960 static void __iwl_down(struct iwl_priv *priv)
1961 {
1962         unsigned long flags;
1963         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1964
1965         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1966
1967         if (!exit_pending)
1968                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1969
1970         iwl_leds_unregister(priv);
1971
1972         iwl_clear_stations_table(priv);
1973
1974         /* Unblock any waiting calls */
1975         wake_up_interruptible_all(&priv->wait_command_queue);
1976
1977         /* Wipe out the EXIT_PENDING status bit if we are not actually
1978          * exiting the module */
1979         if (!exit_pending)
1980                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1981
1982         /* stop and reset the on-board processor */
1983         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1984
1985         /* tell the device to stop sending interrupts */
1986         spin_lock_irqsave(&priv->lock, flags);
1987         iwl_disable_interrupts(priv);
1988         spin_unlock_irqrestore(&priv->lock, flags);
1989         iwl_synchronize_irq(priv);
1990
1991         if (priv->mac80211_registered)
1992                 ieee80211_stop_queues(priv->hw);
1993
1994         /* If we have not previously called iwl_init() then
1995          * clear all bits but the RF Kill and SUSPEND bits and return */
1996         if (!iwl_is_init(priv)) {
1997                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1998                                         STATUS_RF_KILL_HW |
1999                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2000                                         STATUS_RF_KILL_SW |
2001                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2002                                         STATUS_GEO_CONFIGURED |
2003                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2004                                         STATUS_IN_SUSPEND |
2005                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2006                                         STATUS_EXIT_PENDING;
2007                 goto exit;
2008         }
2009
2010         /* ...otherwise clear out all the status bits but the RF Kill and
2011          * SUSPEND bits and continue taking the NIC down. */
2012         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2013                                 STATUS_RF_KILL_HW |
2014                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2015                                 STATUS_RF_KILL_SW |
2016                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2017                                 STATUS_GEO_CONFIGURED |
2018                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2019                                 STATUS_IN_SUSPEND |
2020                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2021                                 STATUS_FW_ERROR |
2022                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2023                                 STATUS_EXIT_PENDING;
2024
2025         spin_lock_irqsave(&priv->lock, flags);
2026         iwl_clear_bit(priv, CSR_GP_CNTRL,
2027                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2028         spin_unlock_irqrestore(&priv->lock, flags);
2029
2030         iwl_txq_ctx_stop(priv);
2031         iwl_rxq_stop(priv);
2032
2033         spin_lock_irqsave(&priv->lock, flags);
2034         if (!iwl_grab_nic_access(priv)) {
2035                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2036                                          APMG_CLK_VAL_DMA_CLK_RQT);
2037                 iwl_release_nic_access(priv);
2038         }
2039         spin_unlock_irqrestore(&priv->lock, flags);
2040
2041         udelay(5);
2042
2043         /* FIXME: apm_ops.suspend(priv) */
2044         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2045                 priv->cfg->ops->lib->apm_ops.stop(priv);
2046         else
2047                 priv->cfg->ops->lib->apm_ops.reset(priv);
2048  exit:
2049         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2050
2051         if (priv->ibss_beacon)
2052                 dev_kfree_skb(priv->ibss_beacon);
2053         priv->ibss_beacon = NULL;
2054
2055         /* clear out any free frames */
2056         iwl_clear_free_frames(priv);
2057 }
2058
2059 static void iwl_down(struct iwl_priv *priv)
2060 {
2061         mutex_lock(&priv->mutex);
2062         __iwl_down(priv);
2063         mutex_unlock(&priv->mutex);
2064
2065         iwl_cancel_deferred_work(priv);
2066 }
2067
2068 #define MAX_HW_RESTARTS 5
2069
2070 static int __iwl_up(struct iwl_priv *priv)
2071 {
2072         int i;
2073         int ret;
2074
2075         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2076                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2077                 return -EIO;
2078         }
2079
2080         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2081                 IWL_ERROR("ucode not available for device bringup\n");
2082                 return -EIO;
2083         }
2084
2085         /* If platform's RF_KILL switch is NOT set to KILL */
2086         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2087                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2088         else
2089                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2090
2091         if (iwl_is_rfkill(priv)) {
2092                 iwl_enable_interrupts(priv);
2093                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2094                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2095                 return 0;
2096         }
2097
2098         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2099
2100         ret = iwl_hw_nic_init(priv);
2101         if (ret) {
2102                 IWL_ERROR("Unable to init nic\n");
2103                 return ret;
2104         }
2105
2106         /* make sure rfkill handshake bits are cleared */
2107         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2108         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2109                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2110
2111         /* clear (again), then enable host interrupts */
2112         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2113         iwl_enable_interrupts(priv);
2114
2115         /* really make sure rfkill handshake bits are cleared */
2116         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2117         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2118
2119         /* Copy original ucode data image from disk into backup cache.
2120          * This will be used to initialize the on-board processor's
2121          * data SRAM for a clean start when the runtime program first loads. */
2122         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2123                priv->ucode_data.len);
2124
2125         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2126
2127                 iwl_clear_stations_table(priv);
2128
2129                 /* load bootstrap state machine,
2130                  * load bootstrap program into processor's memory,
2131                  * prepare to load the "initialize" uCode */
2132                 ret = priv->cfg->ops->lib->load_ucode(priv);
2133
2134                 if (ret) {
2135                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2136                         continue;
2137                 }
2138
2139                 /* Clear out the uCode error bit if it is set */
2140                 clear_bit(STATUS_FW_ERROR, &priv->status);
2141
2142                 /* start card; "initialize" will load runtime ucode */
2143                 iwl_nic_start(priv);
2144
2145                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2146
2147                 return 0;
2148         }
2149
2150         set_bit(STATUS_EXIT_PENDING, &priv->status);
2151         __iwl_down(priv);
2152         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2153
2154         /* tried to restart and config the device for as long as our
2155          * patience could withstand */
2156         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2157         return -EIO;
2158 }
2159
2160
2161 /*****************************************************************************
2162  *
2163  * Workqueue callbacks
2164  *
2165  *****************************************************************************/
2166
2167 static void iwl_bg_init_alive_start(struct work_struct *data)
2168 {
2169         struct iwl_priv *priv =
2170             container_of(data, struct iwl_priv, init_alive_start.work);
2171
2172         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2173                 return;
2174
2175         mutex_lock(&priv->mutex);
2176         priv->cfg->ops->lib->init_alive_start(priv);
2177         mutex_unlock(&priv->mutex);
2178 }
2179
2180 static void iwl_bg_alive_start(struct work_struct *data)
2181 {
2182         struct iwl_priv *priv =
2183             container_of(data, struct iwl_priv, alive_start.work);
2184
2185         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2186                 return;
2187
2188         mutex_lock(&priv->mutex);
2189         iwl_alive_start(priv);
2190         mutex_unlock(&priv->mutex);
2191 }
2192
2193 static void iwl_bg_rf_kill(struct work_struct *work)
2194 {
2195         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2196
2197         wake_up_interruptible(&priv->wait_command_queue);
2198
2199         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2200                 return;
2201
2202         mutex_lock(&priv->mutex);
2203
2204         if (!iwl_is_rfkill(priv)) {
2205                 IWL_DEBUG(IWL_DL_RF_KILL,
2206                           "HW and/or SW RF Kill no longer active, restarting "
2207                           "device\n");
2208                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2209                         queue_work(priv->workqueue, &priv->restart);
2210         } else {
2211                 /* make sure mac80211 stop sending Tx frame */
2212                 if (priv->mac80211_registered)
2213                         ieee80211_stop_queues(priv->hw);
2214
2215                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2216                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2217                                           "disabled by SW switch\n");
2218                 else
2219                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2220                                     "Kill switch must be turned off for "
2221                                     "wireless networking to work.\n");
2222         }
2223         mutex_unlock(&priv->mutex);
2224         iwl_rfkill_set_hw_state(priv);
2225 }
2226
2227 static void iwl_bg_set_monitor(struct work_struct *work)
2228 {
2229         struct iwl_priv *priv = container_of(work,
2230                                 struct iwl_priv, set_monitor);
2231         int ret;
2232
2233         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2234
2235         mutex_lock(&priv->mutex);
2236
2237         ret = iwl_set_mode(priv, NL80211_IFTYPE_MONITOR);
2238         if (ret) {
2239                 if (ret == -EAGAIN)
2240                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2241                 else
2242                         IWL_ERROR("iwl_set_mode() failed ret = %d\n", ret);
2243         }
2244
2245         mutex_unlock(&priv->mutex);
2246 }
2247
2248 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2249 {
2250         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2251                         run_time_calib_work);
2252
2253         mutex_lock(&priv->mutex);
2254
2255         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2256             test_bit(STATUS_SCANNING, &priv->status)) {
2257                 mutex_unlock(&priv->mutex);
2258                 return;
2259         }
2260
2261         if (priv->start_calib) {
2262                 iwl_chain_noise_calibration(priv, &priv->statistics);
2263
2264                 iwl_sensitivity_calibration(priv, &priv->statistics);
2265         }
2266
2267         mutex_unlock(&priv->mutex);
2268         return;
2269 }
2270
2271 static void iwl_bg_up(struct work_struct *data)
2272 {
2273         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2274
2275         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2276                 return;
2277
2278         mutex_lock(&priv->mutex);
2279         __iwl_up(priv);
2280         mutex_unlock(&priv->mutex);
2281         iwl_rfkill_set_hw_state(priv);
2282 }
2283
2284 static void iwl_bg_restart(struct work_struct *data)
2285 {
2286         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2287
2288         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2289                 return;
2290
2291         iwl_down(priv);
2292         queue_work(priv->workqueue, &priv->up);
2293 }
2294
2295 static void iwl_bg_rx_replenish(struct work_struct *data)
2296 {
2297         struct iwl_priv *priv =
2298             container_of(data, struct iwl_priv, rx_replenish);
2299
2300         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2301                 return;
2302
2303         mutex_lock(&priv->mutex);
2304         iwl_rx_replenish(priv);
2305         mutex_unlock(&priv->mutex);
2306 }
2307
2308 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2309
2310 static void iwl_post_associate(struct iwl_priv *priv)
2311 {
2312         struct ieee80211_conf *conf = NULL;
2313         int ret = 0;
2314         unsigned long flags;
2315
2316         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2317                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2318                 return;
2319         }
2320
2321         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2322                         priv->assoc_id, priv->active_rxon.bssid_addr);
2323
2324
2325         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2326                 return;
2327
2328
2329         if (!priv->vif || !priv->is_open)
2330                 return;
2331
2332         iwl_power_cancel_timeout(priv);
2333         iwl_scan_cancel_timeout(priv, 200);
2334
2335         conf = ieee80211_get_hw_conf(priv->hw);
2336
2337         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2338         iwl_commit_rxon(priv);
2339
2340         iwl_setup_rxon_timing(priv);
2341         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2342                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2343         if (ret)
2344                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2345                             "Attempting to continue.\n");
2346
2347         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2348
2349         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2350
2351         iwl_set_rxon_chain(priv);
2352         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2353
2354         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2355                         priv->assoc_id, priv->beacon_int);
2356
2357         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2358                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2359         else
2360                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2361
2362         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2363                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2364                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2365                 else
2366                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2367
2368                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2369                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2370
2371         }
2372
2373         iwl_commit_rxon(priv);
2374
2375         switch (priv->iw_mode) {
2376         case NL80211_IFTYPE_STATION:
2377                 break;
2378
2379         case NL80211_IFTYPE_ADHOC:
2380
2381                 /* assume default assoc id */
2382                 priv->assoc_id = 1;
2383
2384                 iwl_rxon_add_station(priv, priv->bssid, 0);
2385                 iwl_send_beacon_cmd(priv);
2386
2387                 break;
2388
2389         default:
2390                 IWL_ERROR("%s Should not be called in %d mode\n",
2391                           __func__, priv->iw_mode);
2392                 break;
2393         }
2394
2395         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2396                 priv->assoc_station_added = 1;
2397
2398         spin_lock_irqsave(&priv->lock, flags);
2399         iwl_activate_qos(priv, 0);
2400         spin_unlock_irqrestore(&priv->lock, flags);
2401
2402         /* the chain noise calibration will enabled PM upon completion
2403          * If chain noise has already been run, then we need to enable
2404          * power management here */
2405         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2406                 iwl_power_enable_management(priv);
2407
2408         /* Enable Rx differential gain and sensitivity calibrations */
2409         iwl_chain_noise_reset(priv);
2410         priv->start_calib = 1;
2411
2412 }
2413
2414 /*****************************************************************************
2415  *
2416  * mac80211 entry point functions
2417  *
2418  *****************************************************************************/
2419
2420 #define UCODE_READY_TIMEOUT     (4 * HZ)
2421
2422 static int iwl_mac_start(struct ieee80211_hw *hw)
2423 {
2424         struct iwl_priv *priv = hw->priv;
2425         int ret;
2426         u16 pci_cmd;
2427
2428         IWL_DEBUG_MAC80211("enter\n");
2429
2430         if (pci_enable_device(priv->pci_dev)) {
2431                 IWL_ERROR("Fail to pci_enable_device\n");
2432                 return -ENODEV;
2433         }
2434         pci_restore_state(priv->pci_dev);
2435         pci_enable_msi(priv->pci_dev);
2436
2437         /* enable interrupts if needed: hw bug w/a */
2438         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2439         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2440                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2441                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2442         }
2443
2444         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2445                           DRV_NAME, priv);
2446         if (ret) {
2447                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2448                 goto out_disable_msi;
2449         }
2450
2451         /* we should be verifying the device is ready to be opened */
2452         mutex_lock(&priv->mutex);
2453
2454         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2455         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2456          * ucode filename and max sizes are card-specific. */
2457
2458         if (!priv->ucode_code.len) {
2459                 ret = iwl_read_ucode(priv);
2460                 if (ret) {
2461                         IWL_ERROR("Could not read microcode: %d\n", ret);
2462                         mutex_unlock(&priv->mutex);
2463                         goto out_release_irq;
2464                 }
2465         }
2466
2467         ret = __iwl_up(priv);
2468
2469         mutex_unlock(&priv->mutex);
2470
2471         iwl_rfkill_set_hw_state(priv);
2472
2473         if (ret)
2474                 goto out_release_irq;
2475
2476         if (iwl_is_rfkill(priv))
2477                 goto out;
2478
2479         IWL_DEBUG_INFO("Start UP work done.\n");
2480
2481         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2482                 return 0;
2483
2484         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2485          * mac80211 will not be run successfully. */
2486         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2487                         test_bit(STATUS_READY, &priv->status),
2488                         UCODE_READY_TIMEOUT);
2489         if (!ret) {
2490                 if (!test_bit(STATUS_READY, &priv->status)) {
2491                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2492                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2493                         ret = -ETIMEDOUT;
2494                         goto out_release_irq;
2495                 }
2496         }
2497
2498 out:
2499         priv->is_open = 1;
2500         IWL_DEBUG_MAC80211("leave\n");
2501         return 0;
2502
2503 out_release_irq:
2504         free_irq(priv->pci_dev->irq, priv);
2505 out_disable_msi:
2506         pci_disable_msi(priv->pci_dev);
2507         pci_disable_device(priv->pci_dev);
2508         priv->is_open = 0;
2509         IWL_DEBUG_MAC80211("leave - failed\n");
2510         return ret;
2511 }
2512
2513 static void iwl_mac_stop(struct ieee80211_hw *hw)
2514 {
2515         struct iwl_priv *priv = hw->priv;
2516
2517         IWL_DEBUG_MAC80211("enter\n");
2518
2519         if (!priv->is_open) {
2520                 IWL_DEBUG_MAC80211("leave - skip\n");
2521                 return;
2522         }
2523
2524         priv->is_open = 0;
2525
2526         if (iwl_is_ready_rf(priv)) {
2527                 /* stop mac, cancel any scan request and clear
2528                  * RXON_FILTER_ASSOC_MSK BIT
2529                  */
2530                 mutex_lock(&priv->mutex);
2531                 iwl_scan_cancel_timeout(priv, 100);
2532                 mutex_unlock(&priv->mutex);
2533         }
2534
2535         iwl_down(priv);
2536
2537         flush_workqueue(priv->workqueue);
2538         free_irq(priv->pci_dev->irq, priv);
2539         pci_disable_msi(priv->pci_dev);
2540         pci_save_state(priv->pci_dev);
2541         pci_disable_device(priv->pci_dev);
2542
2543         IWL_DEBUG_MAC80211("leave\n");
2544 }
2545
2546 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2547 {
2548         struct iwl_priv *priv = hw->priv;
2549
2550         IWL_DEBUG_MACDUMP("enter\n");
2551
2552         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2553                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2554
2555         if (iwl_tx_skb(priv, skb))
2556                 dev_kfree_skb_any(skb);
2557
2558         IWL_DEBUG_MACDUMP("leave\n");
2559         return 0;
2560 }
2561
2562 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2563                                  struct ieee80211_if_init_conf *conf)
2564 {
2565         struct iwl_priv *priv = hw->priv;
2566         unsigned long flags;
2567
2568         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2569
2570         if (priv->vif) {
2571                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2572                 return -EOPNOTSUPP;
2573         }
2574
2575         spin_lock_irqsave(&priv->lock, flags);
2576         priv->vif = conf->vif;
2577         priv->iw_mode = conf->type;
2578
2579         spin_unlock_irqrestore(&priv->lock, flags);
2580
2581         mutex_lock(&priv->mutex);
2582
2583         if (conf->mac_addr) {
2584                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2585                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2586         }
2587
2588         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2589                 /* we are not ready, will run again when ready */
2590                 set_bit(STATUS_MODE_PENDING, &priv->status);
2591
2592         mutex_unlock(&priv->mutex);
2593
2594         IWL_DEBUG_MAC80211("leave\n");
2595         return 0;
2596 }
2597
2598 /**
2599  * iwl_mac_config - mac80211 config callback
2600  *
2601  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2602  * be set inappropriately and the driver currently sets the hardware up to
2603  * use it whenever needed.
2604  */
2605 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2606 {
2607         struct iwl_priv *priv = hw->priv;
2608         const struct iwl_channel_info *ch_info;
2609         struct ieee80211_conf *conf = &hw->conf;
2610         unsigned long flags;
2611         int ret = 0;
2612         u16 channel;
2613
2614         mutex_lock(&priv->mutex);
2615         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2616
2617         priv->current_ht_config.is_ht = conf->ht.enabled;
2618
2619         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2620                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2621                 goto out;
2622         }
2623
2624         if (!conf->radio_enabled)
2625                 iwl_radio_kill_sw_disable_radio(priv);
2626
2627         if (!iwl_is_ready(priv)) {
2628                 IWL_DEBUG_MAC80211("leave - not ready\n");
2629                 ret = -EIO;
2630                 goto out;
2631         }
2632
2633         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2634                      test_bit(STATUS_SCANNING, &priv->status))) {
2635                 IWL_DEBUG_MAC80211("leave - scanning\n");
2636                 mutex_unlock(&priv->mutex);
2637                 return 0;
2638         }
2639
2640         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2641         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2642         if (!is_channel_valid(ch_info)) {
2643                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2644                 ret = -EINVAL;
2645                 goto out;
2646         }
2647
2648         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2649             !is_channel_ibss(ch_info)) {
2650                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2651                         conf->channel->hw_value, conf->channel->band);
2652                 ret = -EINVAL;
2653                 goto out;
2654         }
2655
2656         spin_lock_irqsave(&priv->lock, flags);
2657
2658
2659         /* if we are switching from ht to 2.4 clear flags
2660          * from any ht related info since 2.4 does not
2661          * support ht */
2662         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2663 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2664             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2665 #endif
2666         )
2667                 priv->staging_rxon.flags = 0;
2668
2669         iwl_set_rxon_channel(priv, conf->channel);
2670
2671         iwl_set_flags_for_band(priv, conf->channel->band);
2672
2673         /* The list of supported rates and rate mask can be different
2674          * for each band; since the band may have changed, reset
2675          * the rate mask to what mac80211 lists */
2676         iwl_set_rate(priv);
2677
2678         spin_unlock_irqrestore(&priv->lock, flags);
2679
2680 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2681         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2682                 iwl_hw_channel_switch(priv, conf->channel);
2683                 goto out;
2684         }
2685 #endif
2686
2687         if (!conf->radio_enabled) {
2688                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2689                 goto out;
2690         }
2691
2692         if (iwl_is_rfkill(priv)) {
2693                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2694                 ret = -EIO;
2695                 goto out;
2696         }
2697
2698         if (conf->flags & IEEE80211_CONF_PS)
2699                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2700         else
2701                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2702         if (ret)
2703                 IWL_DEBUG_MAC80211("Error setting power level\n");
2704
2705         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2706                            priv->tx_power_user_lmt, conf->power_level);
2707
2708         iwl_set_tx_power(priv, conf->power_level, false);
2709
2710         iwl_set_rate(priv);
2711
2712         if (memcmp(&priv->active_rxon,
2713                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2714                 iwl_commit_rxon(priv);
2715         else
2716                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2717
2718         IWL_DEBUG_MAC80211("leave\n");
2719
2720 out:
2721         mutex_unlock(&priv->mutex);
2722         return ret;
2723 }
2724
2725 static void iwl_config_ap(struct iwl_priv *priv)
2726 {
2727         int ret = 0;
2728         unsigned long flags;
2729
2730         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2731                 return;
2732
2733         /* The following should be done only at AP bring up */
2734         if (!iwl_is_associated(priv)) {
2735
2736                 /* RXON - unassoc (to set timing command) */
2737                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2738                 iwl_commit_rxon(priv);
2739
2740                 /* RXON Timing */
2741                 iwl_setup_rxon_timing(priv);
2742                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2743                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2744                 if (ret)
2745                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2746                                         "Attempting to continue.\n");
2747
2748                 iwl_set_rxon_chain(priv);
2749
2750                 /* FIXME: what should be the assoc_id for AP? */
2751                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2752                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2753                         priv->staging_rxon.flags |=
2754                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2755                 else
2756                         priv->staging_rxon.flags &=
2757                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2758
2759                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2760                         if (priv->assoc_capability &
2761                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2762                                 priv->staging_rxon.flags |=
2763                                         RXON_FLG_SHORT_SLOT_MSK;
2764                         else
2765                                 priv->staging_rxon.flags &=
2766                                         ~RXON_FLG_SHORT_SLOT_MSK;
2767
2768                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2769                                 priv->staging_rxon.flags &=
2770                                         ~RXON_FLG_SHORT_SLOT_MSK;
2771                 }
2772                 /* restore RXON assoc */
2773                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2774                 iwl_commit_rxon(priv);
2775                 spin_lock_irqsave(&priv->lock, flags);
2776                 iwl_activate_qos(priv, 1);
2777                 spin_unlock_irqrestore(&priv->lock, flags);
2778                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2779         }
2780         iwl_send_beacon_cmd(priv);
2781
2782         /* FIXME - we need to add code here to detect a totally new
2783          * configuration, reset the AP, unassoc, rxon timing, assoc,
2784          * clear sta table, add BCAST sta... */
2785 }
2786
2787
2788 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2789                                         struct ieee80211_vif *vif,
2790                                     struct ieee80211_if_conf *conf)
2791 {
2792         struct iwl_priv *priv = hw->priv;
2793         int rc;
2794
2795         if (conf == NULL)
2796                 return -EIO;
2797
2798         if (priv->vif != vif) {
2799                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2800                 return 0;
2801         }
2802
2803         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2804             conf->changed & IEEE80211_IFCC_BEACON) {
2805                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2806                 if (!beacon)
2807                         return -ENOMEM;
2808                 mutex_lock(&priv->mutex);
2809                 rc = iwl_mac_beacon_update(hw, beacon);
2810                 mutex_unlock(&priv->mutex);
2811                 if (rc)
2812                         return rc;
2813         }
2814
2815         if (!iwl_is_alive(priv))
2816                 return -EAGAIN;
2817
2818         mutex_lock(&priv->mutex);
2819
2820         if (conf->bssid)
2821                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2822
2823 /*
2824  * very dubious code was here; the probe filtering flag is never set:
2825  *
2826         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2827             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2828  */
2829
2830         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2831                 if (!conf->bssid) {
2832                         conf->bssid = priv->mac_addr;
2833                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2834                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2835                                            conf->bssid);
2836                 }
2837                 if (priv->ibss_beacon)
2838                         dev_kfree_skb(priv->ibss_beacon);
2839
2840                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2841         }
2842
2843         if (iwl_is_rfkill(priv))
2844                 goto done;
2845
2846         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2847             !is_multicast_ether_addr(conf->bssid)) {
2848                 /* If there is currently a HW scan going on in the background
2849                  * then we need to cancel it else the RXON below will fail. */
2850                 if (iwl_scan_cancel_timeout(priv, 100)) {
2851                         IWL_WARNING("Aborted scan still in progress "
2852                                     "after 100ms\n");
2853                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2854                         mutex_unlock(&priv->mutex);
2855                         return -EAGAIN;
2856                 }
2857                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2858
2859                 /* TODO: Audit driver for usage of these members and see
2860                  * if mac80211 deprecates them (priv->bssid looks like it
2861                  * shouldn't be there, but I haven't scanned the IBSS code
2862                  * to verify) - jpk */
2863                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2864
2865                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2866                         iwl_config_ap(priv);
2867                 else {
2868                         rc = iwl_commit_rxon(priv);
2869                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2870                                 iwl_rxon_add_station(
2871                                         priv, priv->active_rxon.bssid_addr, 1);
2872                 }
2873
2874         } else {
2875                 iwl_scan_cancel_timeout(priv, 100);
2876                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2877                 iwl_commit_rxon(priv);
2878         }
2879
2880  done:
2881         IWL_DEBUG_MAC80211("leave\n");
2882         mutex_unlock(&priv->mutex);
2883
2884         return 0;
2885 }
2886
2887 static void iwl_configure_filter(struct ieee80211_hw *hw,
2888                                  unsigned int changed_flags,
2889                                  unsigned int *total_flags,
2890                                  int mc_count, struct dev_addr_list *mc_list)
2891 {
2892         struct iwl_priv *priv = hw->priv;
2893
2894         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
2895                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
2896                                    NL80211_IFTYPE_MONITOR,
2897                                    changed_flags, *total_flags);
2898                 /* queue work 'cuz mac80211 is holding a lock which
2899                  * prevents us from issuing (synchronous) f/w cmds */
2900                 queue_work(priv->workqueue, &priv->set_monitor);
2901         }
2902         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
2903                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2904 }
2905
2906 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2907                                      struct ieee80211_if_init_conf *conf)
2908 {
2909         struct iwl_priv *priv = hw->priv;
2910
2911         IWL_DEBUG_MAC80211("enter\n");
2912
2913         mutex_lock(&priv->mutex);
2914
2915         if (iwl_is_ready_rf(priv)) {
2916                 iwl_scan_cancel_timeout(priv, 100);
2917                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2918                 iwl_commit_rxon(priv);
2919         }
2920         if (priv->vif == conf->vif) {
2921                 priv->vif = NULL;
2922                 memset(priv->bssid, 0, ETH_ALEN);
2923         }
2924         mutex_unlock(&priv->mutex);
2925
2926         IWL_DEBUG_MAC80211("leave\n");
2927
2928 }
2929
2930 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2931 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2932                                      struct ieee80211_vif *vif,
2933                                      struct ieee80211_bss_conf *bss_conf,
2934                                      u32 changes)
2935 {
2936         struct iwl_priv *priv = hw->priv;
2937
2938         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2939
2940         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2941                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2942                                    bss_conf->use_short_preamble);
2943                 if (bss_conf->use_short_preamble)
2944                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2945                 else
2946                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2947         }
2948
2949         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2950                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2951                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2952                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2953                 else
2954                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2955         }
2956
2957         if (changes & BSS_CHANGED_HT) {
2958                 iwl_ht_conf(priv, bss_conf);
2959                 iwl_set_rxon_chain(priv);
2960         }
2961
2962         if (changes & BSS_CHANGED_ASSOC) {
2963                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2964                 /* This should never happen as this function should
2965                  * never be called from interrupt context. */
2966                 if (WARN_ON_ONCE(in_interrupt()))
2967                         return;
2968                 if (bss_conf->assoc) {
2969                         priv->assoc_id = bss_conf->aid;
2970                         priv->beacon_int = bss_conf->beacon_int;
2971                         priv->power_data.dtim_period = bss_conf->dtim_period;
2972                         priv->timestamp = bss_conf->timestamp;
2973                         priv->assoc_capability = bss_conf->assoc_capability;
2974
2975                         /* we have just associated, don't start scan too early
2976                          * leave time for EAPOL exchange to complete
2977                          */
2978                         priv->next_scan_jiffies = jiffies +
2979                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2980                         mutex_lock(&priv->mutex);
2981                         iwl_post_associate(priv);
2982                         mutex_unlock(&priv->mutex);
2983                 } else {
2984                         priv->assoc_id = 0;
2985                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2986                 }
2987         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2988                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2989                         iwl_send_rxon_assoc(priv);
2990         }
2991
2992 }
2993
2994 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2995 {
2996         unsigned long flags;
2997         struct iwl_priv *priv = hw->priv;
2998         int ret;
2999
3000         IWL_DEBUG_MAC80211("enter\n");
3001
3002         mutex_lock(&priv->mutex);
3003         spin_lock_irqsave(&priv->lock, flags);
3004
3005         if (!iwl_is_ready_rf(priv)) {
3006                 ret = -EIO;
3007                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3008                 goto out_unlock;
3009         }
3010
3011         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3012                 ret = -EIO;
3013                 IWL_ERROR("ERROR: APs don't scan\n");
3014                 goto out_unlock;
3015         }
3016
3017         /* We don't schedule scan within next_scan_jiffies period.
3018          * Avoid scanning during possible EAPOL exchange, return
3019          * success immediately.
3020          */
3021         if (priv->next_scan_jiffies &&
3022             time_after(priv->next_scan_jiffies, jiffies)) {
3023                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3024                 queue_work(priv->workqueue, &priv->scan_completed);
3025                 ret = 0;
3026                 goto out_unlock;
3027         }
3028
3029         /* if we just finished scan ask for delay */
3030         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3031             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3032                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3033                 queue_work(priv->workqueue, &priv->scan_completed);
3034                 ret = 0;
3035                 goto out_unlock;
3036         }
3037
3038         if (ssid_len) {
3039                 priv->one_direct_scan = 1;
3040                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3041                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3042         } else {
3043                 priv->one_direct_scan = 0;
3044         }
3045
3046         ret = iwl_scan_initiate(priv);
3047
3048         IWL_DEBUG_MAC80211("leave\n");
3049
3050 out_unlock:
3051         spin_unlock_irqrestore(&priv->lock, flags);
3052         mutex_unlock(&priv->mutex);
3053
3054         return ret;
3055 }
3056
3057 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3058                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3059                         u32 iv32, u16 *phase1key)
3060 {
3061
3062         struct iwl_priv *priv = hw->priv;
3063         IWL_DEBUG_MAC80211("enter\n");
3064
3065         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3066
3067         IWL_DEBUG_MAC80211("leave\n");
3068 }
3069
3070 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3071                            const u8 *local_addr, const u8 *addr,
3072                            struct ieee80211_key_conf *key)
3073 {
3074         struct iwl_priv *priv = hw->priv;
3075         int ret = 0;
3076         u8 sta_id = IWL_INVALID_STATION;
3077         u8 is_default_wep_key = 0;
3078
3079         IWL_DEBUG_MAC80211("enter\n");
3080
3081         if (priv->hw_params.sw_crypto) {
3082                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3083                 return -EOPNOTSUPP;
3084         }
3085
3086         if (is_zero_ether_addr(addr))
3087                 /* only support pairwise keys */
3088                 return -EOPNOTSUPP;
3089
3090         sta_id = iwl_find_station(priv, addr);
3091         if (sta_id == IWL_INVALID_STATION) {
3092                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3093                                    addr);
3094                 return -EINVAL;
3095
3096         }
3097
3098         mutex_lock(&priv->mutex);
3099         iwl_scan_cancel_timeout(priv, 100);
3100         mutex_unlock(&priv->mutex);
3101
3102         /* If we are getting WEP group key and we didn't receive any key mapping
3103          * so far, we are in legacy wep mode (group key only), otherwise we are
3104          * in 1X mode.
3105          * In legacy wep mode, we use another host command to the uCode */
3106         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3107                 priv->iw_mode != NL80211_IFTYPE_AP) {
3108                 if (cmd == SET_KEY)
3109                         is_default_wep_key = !priv->key_mapping_key;
3110                 else
3111                         is_default_wep_key =
3112                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3113         }
3114
3115         switch (cmd) {
3116         case SET_KEY:
3117                 if (is_default_wep_key)
3118                         ret = iwl_set_default_wep_key(priv, key);
3119                 else
3120                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3121
3122                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3123                 break;
3124         case DISABLE_KEY:
3125                 if (is_default_wep_key)
3126                         ret = iwl_remove_default_wep_key(priv, key);
3127                 else
3128                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3129
3130                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3131                 break;
3132         default:
3133                 ret = -EINVAL;
3134         }
3135
3136         IWL_DEBUG_MAC80211("leave\n");
3137
3138         return ret;
3139 }
3140
3141 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3142                            const struct ieee80211_tx_queue_params *params)
3143 {
3144         struct iwl_priv *priv = hw->priv;
3145         unsigned long flags;
3146         int q;
3147
3148         IWL_DEBUG_MAC80211("enter\n");
3149
3150         if (!iwl_is_ready_rf(priv)) {
3151                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3152                 return -EIO;
3153         }
3154
3155         if (queue >= AC_NUM) {
3156                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3157                 return 0;
3158         }
3159
3160         if (!priv->qos_data.qos_enable) {
3161                 priv->qos_data.qos_active = 0;
3162                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3163                 return 0;
3164         }
3165         q = AC_NUM - 1 - queue;
3166
3167         spin_lock_irqsave(&priv->lock, flags);
3168
3169         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3170         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3171         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3172         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3173                         cpu_to_le16((params->txop * 32));
3174
3175         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3176         priv->qos_data.qos_active = 1;
3177
3178         if (priv->iw_mode == NL80211_IFTYPE_AP)
3179                 iwl_activate_qos(priv, 1);
3180         else if (priv->assoc_id && iwl_is_associated(priv))
3181                 iwl_activate_qos(priv, 0);
3182
3183         spin_unlock_irqrestore(&priv->lock, flags);
3184
3185         IWL_DEBUG_MAC80211("leave\n");
3186         return 0;
3187 }
3188
3189 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3190                              enum ieee80211_ampdu_mlme_action action,
3191                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3192 {
3193         struct iwl_priv *priv = hw->priv;
3194
3195         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3196                      sta->addr, tid);
3197
3198         if (!(priv->cfg->sku & IWL_SKU_N))
3199                 return -EACCES;
3200
3201         switch (action) {
3202         case IEEE80211_AMPDU_RX_START:
3203                 IWL_DEBUG_HT("start Rx\n");
3204                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3205         case IEEE80211_AMPDU_RX_STOP:
3206                 IWL_DEBUG_HT("stop Rx\n");
3207                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3208         case IEEE80211_AMPDU_TX_START:
3209                 IWL_DEBUG_HT("start Tx\n");
3210                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3211         case IEEE80211_AMPDU_TX_STOP:
3212                 IWL_DEBUG_HT("stop Tx\n");
3213                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3214         default:
3215                 IWL_DEBUG_HT("unknown\n");
3216                 return -EINVAL;
3217                 break;
3218         }
3219         return 0;
3220 }
3221
3222 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3223                                 struct ieee80211_tx_queue_stats *stats)
3224 {
3225         struct iwl_priv *priv = hw->priv;
3226         int i, avail;
3227         struct iwl_tx_queue *txq;
3228         struct iwl_queue *q;
3229         unsigned long flags;
3230
3231         IWL_DEBUG_MAC80211("enter\n");
3232
3233         if (!iwl_is_ready_rf(priv)) {
3234                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3235                 return -EIO;
3236         }
3237
3238         spin_lock_irqsave(&priv->lock, flags);
3239
3240         for (i = 0; i < AC_NUM; i++) {
3241                 txq = &priv->txq[i];
3242                 q = &txq->q;
3243                 avail = iwl_queue_space(q);
3244
3245                 stats[i].len = q->n_window - avail;
3246                 stats[i].limit = q->n_window - q->high_mark;
3247                 stats[i].count = q->n_window;
3248
3249         }
3250         spin_unlock_irqrestore(&priv->lock, flags);
3251
3252         IWL_DEBUG_MAC80211("leave\n");
3253
3254         return 0;
3255 }
3256
3257 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3258                              struct ieee80211_low_level_stats *stats)
3259 {
3260         struct iwl_priv *priv = hw->priv;
3261
3262         priv = hw->priv;
3263         IWL_DEBUG_MAC80211("enter\n");
3264         IWL_DEBUG_MAC80211("leave\n");
3265
3266         return 0;
3267 }
3268
3269 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3270 {
3271         struct iwl_priv *priv = hw->priv;
3272         unsigned long flags;
3273
3274         mutex_lock(&priv->mutex);
3275         IWL_DEBUG_MAC80211("enter\n");
3276
3277         spin_lock_irqsave(&priv->lock, flags);
3278         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3279         spin_unlock_irqrestore(&priv->lock, flags);
3280
3281         iwl_reset_qos(priv);
3282
3283         spin_lock_irqsave(&priv->lock, flags);
3284         priv->assoc_id = 0;
3285         priv->assoc_capability = 0;
3286         priv->assoc_station_added = 0;
3287
3288         /* new association get rid of ibss beacon skb */
3289         if (priv->ibss_beacon)
3290                 dev_kfree_skb(priv->ibss_beacon);
3291
3292         priv->ibss_beacon = NULL;
3293
3294         priv->beacon_int = priv->hw->conf.beacon_int;
3295         priv->timestamp = 0;
3296         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3297                 priv->beacon_int = 0;
3298
3299         spin_unlock_irqrestore(&priv->lock, flags);
3300
3301         if (!iwl_is_ready_rf(priv)) {
3302                 IWL_DEBUG_MAC80211("leave - not ready\n");
3303                 mutex_unlock(&priv->mutex);
3304                 return;
3305         }
3306
3307         /* we are restarting association process
3308          * clear RXON_FILTER_ASSOC_MSK bit
3309          */
3310         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3311                 iwl_scan_cancel_timeout(priv, 100);
3312                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3313                 iwl_commit_rxon(priv);
3314         }
3315
3316         iwl_power_update_mode(priv, 0);
3317
3318         /* Per mac80211.h: This is only used in IBSS mode... */
3319         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3320
3321                 /* switch to CAM during association period.
3322                  * the ucode will block any association/authentication
3323                  * frome during assiciation period if it can not hear
3324                  * the AP because of PM. the timer enable PM back is
3325                  * association do not complete
3326                  */
3327                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3328                                                      IEEE80211_CHAN_RADAR))
3329                                 iwl_power_disable_management(priv, 3000);
3330
3331                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3332                 mutex_unlock(&priv->mutex);
3333                 return;
3334         }
3335
3336         iwl_set_rate(priv);
3337
3338         mutex_unlock(&priv->mutex);
3339
3340         IWL_DEBUG_MAC80211("leave\n");
3341 }
3342
3343 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3344 {
3345         struct iwl_priv *priv = hw->priv;
3346         unsigned long flags;
3347         __le64 timestamp;
3348
3349         IWL_DEBUG_MAC80211("enter\n");
3350
3351         if (!iwl_is_ready_rf(priv)) {
3352                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3353                 return -EIO;
3354         }
3355
3356         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3357                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3358                 return -EIO;
3359         }
3360
3361         spin_lock_irqsave(&priv->lock, flags);
3362
3363         if (priv->ibss_beacon)
3364                 dev_kfree_skb(priv->ibss_beacon);
3365
3366         priv->ibss_beacon = skb;
3367
3368         priv->assoc_id = 0;
3369         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3370         priv->timestamp = le64_to_cpu(timestamp);
3371
3372         IWL_DEBUG_MAC80211("leave\n");
3373         spin_unlock_irqrestore(&priv->lock, flags);
3374
3375         iwl_reset_qos(priv);
3376
3377         iwl_post_associate(priv);
3378
3379
3380         return 0;
3381 }
3382
3383 /*****************************************************************************
3384  *
3385  * sysfs attributes
3386  *
3387  *****************************************************************************/
3388
3389 #ifdef CONFIG_IWLWIFI_DEBUG
3390
3391 /*
3392  * The following adds a new attribute to the sysfs representation
3393  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3394  * used for controlling the debug level.
3395  *
3396  * See the level definitions in iwl for details.
3397  */
3398
3399 static ssize_t show_debug_level(struct device *d,
3400                                 struct device_attribute *attr, char *buf)
3401 {
3402         struct iwl_priv *priv = d->driver_data;
3403
3404         return sprintf(buf, "0x%08X\n", priv->debug_level);
3405 }
3406 static ssize_t store_debug_level(struct device *d,
3407                                 struct device_attribute *attr,
3408                                  const char *buf, size_t count)
3409 {
3410         struct iwl_priv *priv = d->driver_data;
3411         unsigned long val;
3412         int ret;
3413
3414         ret = strict_strtoul(buf, 0, &val);
3415         if (ret)
3416                 printk(KERN_INFO DRV_NAME
3417                        ": %s is not in hex or decimal form.\n", buf);
3418         else
3419                 priv->debug_level = val;
3420
3421         return strnlen(buf, count);
3422 }
3423
3424 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3425                         show_debug_level, store_debug_level);
3426
3427
3428 #endif /* CONFIG_IWLWIFI_DEBUG */
3429
3430
3431 static ssize_t show_version(struct device *d,
3432                                 struct device_attribute *attr, char *buf)
3433 {
3434         struct iwl_priv *priv = d->driver_data;
3435         struct iwl_alive_resp *palive = &priv->card_alive;
3436         ssize_t pos = 0;
3437         u16 eeprom_ver;
3438
3439         if (palive->is_valid)
3440                 pos += sprintf(buf + pos,
3441                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3442                                 "fw type: 0x%01X 0x%01X\n",
3443                                 palive->ucode_major, palive->ucode_minor,
3444                                 palive->sw_rev[0], palive->sw_rev[1],
3445                                 palive->ver_type, palive->ver_subtype);
3446         else
3447                 pos += sprintf(buf + pos, "fw not loaded\n");
3448
3449         if (priv->eeprom) {
3450                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3451                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3452                                  eeprom_ver);
3453         } else {
3454                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3455         }
3456
3457         return pos;
3458 }
3459
3460 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3461
3462 static ssize_t show_temperature(struct device *d,
3463                                 struct device_attribute *attr, char *buf)
3464 {
3465         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3466
3467         if (!iwl_is_alive(priv))
3468                 return -EAGAIN;
3469
3470         return sprintf(buf, "%d\n", priv->temperature);
3471 }
3472
3473 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3474
3475 static ssize_t show_tx_power(struct device *d,
3476                              struct device_attribute *attr, char *buf)
3477 {
3478         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3479         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3480 }
3481
3482 static ssize_t store_tx_power(struct device *d,
3483                               struct device_attribute *attr,
3484                               const char *buf, size_t count)
3485 {
3486         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3487         unsigned long val;
3488         int ret;
3489
3490         ret = strict_strtoul(buf, 10, &val);
3491         if (ret)
3492                 printk(KERN_INFO DRV_NAME
3493                        ": %s is not in decimal form.\n", buf);
3494         else
3495                 iwl_set_tx_power(priv, val, false);
3496
3497         return count;
3498 }
3499
3500 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3501
3502 static ssize_t show_flags(struct device *d,
3503                           struct device_attribute *attr, char *buf)
3504 {
3505         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3506
3507         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3508 }
3509
3510 static ssize_t store_flags(struct device *d,
3511                            struct device_attribute *attr,
3512                            const char *buf, size_t count)
3513 {
3514         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3515         unsigned long val;
3516         u32 flags;
3517         int ret = strict_strtoul(buf, 0, &val);
3518         if (ret)
3519                 return ret;
3520         flags = (u32)val;
3521
3522         mutex_lock(&priv->mutex);
3523         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3524                 /* Cancel any currently running scans... */
3525                 if (iwl_scan_cancel_timeout(priv, 100))
3526                         IWL_WARNING("Could not cancel scan.\n");
3527                 else {
3528                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3529                         priv->staging_rxon.flags = cpu_to_le32(flags);
3530                         iwl_commit_rxon(priv);
3531                 }
3532         }
3533         mutex_unlock(&priv->mutex);
3534
3535         return count;
3536 }
3537
3538 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3539
3540 static ssize_t show_filter_flags(struct device *d,
3541                                  struct device_attribute *attr, char *buf)
3542 {
3543         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3544
3545         return sprintf(buf, "0x%04X\n",
3546                 le32_to_cpu(priv->active_rxon.filter_flags));
3547 }
3548
3549 static ssize_t store_filter_flags(struct device *d,
3550                                   struct device_attribute *attr,
3551                                   const char *buf, size_t count)
3552 {
3553         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3554         unsigned long val;
3555         u32 filter_flags;
3556         int ret = strict_strtoul(buf, 0, &val);
3557         if (ret)
3558                 return ret;
3559         filter_flags = (u32)val;
3560
3561         mutex_lock(&priv->mutex);
3562         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3563                 /* Cancel any currently running scans... */
3564                 if (iwl_scan_cancel_timeout(priv, 100))
3565                         IWL_WARNING("Could not cancel scan.\n");
3566                 else {
3567                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3568                                        "0x%04X\n", filter_flags);
3569                         priv->staging_rxon.filter_flags =
3570                                 cpu_to_le32(filter_flags);
3571                         iwl_commit_rxon(priv);
3572                 }
3573         }
3574         mutex_unlock(&priv->mutex);
3575
3576         return count;
3577 }
3578
3579 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3580                    store_filter_flags);
3581
3582 static ssize_t store_retry_rate(struct device *d,
3583                                 struct device_attribute *attr,
3584                                 const char *buf, size_t count)
3585 {
3586         struct iwl_priv *priv = dev_get_drvdata(d);
3587         long val;
3588         int ret  = strict_strtol(buf, 10, &val);
3589         if (!ret)
3590                 return ret;
3591
3592         priv->retry_rate = (val > 0) ? val : 1;
3593
3594         return count;
3595 }
3596
3597 static ssize_t show_retry_rate(struct device *d,
3598                                struct device_attribute *attr, char *buf)
3599 {
3600         struct iwl_priv *priv = dev_get_drvdata(d);
3601         return sprintf(buf, "%d", priv->retry_rate);
3602 }
3603
3604 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3605                    store_retry_rate);
3606
3607 static ssize_t store_power_level(struct device *d,
3608                                  struct device_attribute *attr,
3609                                  const char *buf, size_t count)
3610 {
3611         struct iwl_priv *priv = dev_get_drvdata(d);
3612         int ret;
3613         unsigned long mode;
3614
3615
3616         mutex_lock(&priv->mutex);
3617
3618         if (!iwl_is_ready(priv)) {
3619                 ret = -EAGAIN;
3620                 goto out;
3621         }
3622
3623         ret = strict_strtoul(buf, 10, &mode);
3624         if (ret)
3625                 goto out;
3626
3627         ret = iwl_power_set_user_mode(priv, mode);
3628         if (ret) {
3629                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3630                 goto out;
3631         }
3632         ret = count;
3633
3634  out:
3635         mutex_unlock(&priv->mutex);
3636         return ret;
3637 }
3638
3639 static ssize_t show_power_level(struct device *d,
3640                                 struct device_attribute *attr, char *buf)
3641 {
3642         struct iwl_priv *priv = dev_get_drvdata(d);
3643         int mode = priv->power_data.user_power_setting;
3644         int system = priv->power_data.system_power_setting;
3645         int level = priv->power_data.power_mode;
3646         char *p = buf;
3647
3648         switch (system) {
3649         case IWL_POWER_SYS_AUTO:
3650                 p += sprintf(p, "SYSTEM:auto");
3651                 break;
3652         case IWL_POWER_SYS_AC:
3653                 p += sprintf(p, "SYSTEM:ac");
3654                 break;
3655         case IWL_POWER_SYS_BATTERY:
3656                 p += sprintf(p, "SYSTEM:battery");
3657                 break;
3658         }
3659
3660         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3661                         "fixed" : "auto");
3662         p += sprintf(p, "\tINDEX:%d", level);
3663         p += sprintf(p, "\n");
3664         return p - buf + 1;
3665 }
3666
3667 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3668                    store_power_level);
3669
3670 static ssize_t show_channels(struct device *d,
3671                              struct device_attribute *attr, char *buf)
3672 {
3673
3674         struct iwl_priv *priv = dev_get_drvdata(d);
3675         struct ieee80211_channel *channels = NULL;
3676         const struct ieee80211_supported_band *supp_band = NULL;
3677         int len = 0, i;
3678         int count = 0;
3679
3680         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3681                 return -EAGAIN;
3682
3683         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3684         channels = supp_band->channels;
3685         count = supp_band->n_channels;
3686
3687         len += sprintf(&buf[len],
3688                         "Displaying %d channels in 2.4GHz band "
3689                         "(802.11bg):\n", count);
3690
3691         for (i = 0; i < count; i++)
3692                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3693                                 ieee80211_frequency_to_channel(
3694                                 channels[i].center_freq),
3695                                 channels[i].max_power,
3696                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3697                                 " (IEEE 802.11h required)" : "",
3698                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3699                                 || (channels[i].flags &
3700                                 IEEE80211_CHAN_RADAR)) ? "" :
3701                                 ", IBSS",
3702                                 channels[i].flags &
3703                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3704                                 "passive only" : "active/passive");
3705
3706         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3707         channels = supp_band->channels;
3708         count = supp_band->n_channels;
3709
3710         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3711                         "(802.11a):\n", count);
3712
3713         for (i = 0; i < count; i++)
3714                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3715                                 ieee80211_frequency_to_channel(
3716                                 channels[i].center_freq),
3717                                 channels[i].max_power,
3718                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3719                                 " (IEEE 802.11h required)" : "",
3720                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3721                                 || (channels[i].flags &
3722                                 IEEE80211_CHAN_RADAR)) ? "" :
3723                                 ", IBSS",
3724                                 channels[i].flags &
3725                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3726                                 "passive only" : "active/passive");
3727
3728         return len;
3729 }
3730
3731 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3732
3733 static ssize_t show_statistics(struct device *d,
3734                                struct device_attribute *attr, char *buf)
3735 {
3736         struct iwl_priv *priv = dev_get_drvdata(d);
3737         u32 size = sizeof(struct iwl_notif_statistics);
3738         u32 len = 0, ofs = 0;
3739         u8 *data = (u8 *)&priv->statistics;
3740         int rc = 0;
3741
3742         if (!iwl_is_alive(priv))
3743                 return -EAGAIN;
3744
3745         mutex_lock(&priv->mutex);
3746         rc = iwl_send_statistics_request(priv, 0);
3747         mutex_unlock(&priv->mutex);
3748
3749         if (rc) {
3750                 len = sprintf(buf,
3751                               "Error sending statistics request: 0x%08X\n", rc);
3752                 return len;
3753         }
3754
3755         while (size && (PAGE_SIZE - len)) {
3756                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3757                                    PAGE_SIZE - len, 1);
3758                 len = strlen(buf);
3759                 if (PAGE_SIZE - len)
3760                         buf[len++] = '\n';
3761
3762                 ofs += 16;
3763                 size -= min(size, 16U);
3764         }
3765
3766         return len;
3767 }
3768
3769 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3770
3771 static ssize_t show_status(struct device *d,
3772                            struct device_attribute *attr, char *buf)
3773 {
3774         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3775         if (!iwl_is_alive(priv))
3776                 return -EAGAIN;
3777         return sprintf(buf, "0x%08x\n", (int)priv->status);
3778 }
3779
3780 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3781
3782 /*****************************************************************************
3783  *
3784  * driver setup and teardown
3785  *
3786  *****************************************************************************/
3787
3788 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3789 {
3790         priv->workqueue = create_workqueue(DRV_NAME);
3791
3792         init_waitqueue_head(&priv->wait_command_queue);
3793
3794         INIT_WORK(&priv->up, iwl_bg_up);
3795         INIT_WORK(&priv->restart, iwl_bg_restart);
3796         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3797         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3798         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3799         INIT_WORK(&priv->set_monitor, iwl_bg_set_monitor);
3800         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3801         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3802         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3803
3804         iwl_setup_scan_deferred_work(priv);
3805         iwl_setup_power_deferred_work(priv);
3806
3807         if (priv->cfg->ops->lib->setup_deferred_work)
3808                 priv->cfg->ops->lib->setup_deferred_work(priv);
3809
3810         init_timer(&priv->statistics_periodic);
3811         priv->statistics_periodic.data = (unsigned long)priv;
3812         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3813
3814         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3815                      iwl_irq_tasklet, (unsigned long)priv);
3816 }
3817
3818 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3819 {
3820         if (priv->cfg->ops->lib->cancel_deferred_work)
3821                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3822
3823         cancel_delayed_work_sync(&priv->init_alive_start);
3824         cancel_delayed_work(&priv->scan_check);
3825         cancel_delayed_work_sync(&priv->set_power_save);
3826         cancel_delayed_work(&priv->alive_start);
3827         cancel_work_sync(&priv->beacon_update);
3828         del_timer_sync(&priv->statistics_periodic);
3829 }
3830
3831 static struct attribute *iwl_sysfs_entries[] = {
3832         &dev_attr_channels.attr,
3833         &dev_attr_flags.attr,
3834         &dev_attr_filter_flags.attr,
3835         &dev_attr_power_level.attr,
3836         &dev_attr_retry_rate.attr,
3837         &dev_attr_statistics.attr,
3838         &dev_attr_status.attr,
3839         &dev_attr_temperature.attr,
3840         &dev_attr_tx_power.attr,
3841 #ifdef CONFIG_IWLWIFI_DEBUG
3842         &dev_attr_debug_level.attr,
3843 #endif
3844         &dev_attr_version.attr,
3845
3846         NULL
3847 };
3848
3849 static struct attribute_group iwl_attribute_group = {
3850         .name = NULL,           /* put in device directory */
3851         .attrs = iwl_sysfs_entries,
3852 };
3853
3854 static struct ieee80211_ops iwl_hw_ops = {
3855         .tx = iwl_mac_tx,
3856         .start = iwl_mac_start,
3857         .stop = iwl_mac_stop,
3858         .add_interface = iwl_mac_add_interface,
3859         .remove_interface = iwl_mac_remove_interface,
3860         .config = iwl_mac_config,
3861         .config_interface = iwl_mac_config_interface,
3862         .configure_filter = iwl_configure_filter,
3863         .set_key = iwl_mac_set_key,
3864         .update_tkip_key = iwl_mac_update_tkip_key,
3865         .get_stats = iwl_mac_get_stats,
3866         .get_tx_stats = iwl_mac_get_tx_stats,
3867         .conf_tx = iwl_mac_conf_tx,
3868         .reset_tsf = iwl_mac_reset_tsf,
3869         .bss_info_changed = iwl_bss_info_changed,
3870         .ampdu_action = iwl_mac_ampdu_action,
3871         .hw_scan = iwl_mac_hw_scan
3872 };
3873
3874 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3875 {
3876         int err = 0;
3877         struct iwl_priv *priv;
3878         struct ieee80211_hw *hw;
3879         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3880         unsigned long flags;
3881
3882         /************************
3883          * 1. Allocating HW data
3884          ************************/
3885
3886         /* Disabling hardware scan means that mac80211 will perform scans
3887          * "the hard way", rather than using device's scan. */
3888         if (cfg->mod_params->disable_hw_scan) {
3889                 if (cfg->mod_params->debug & IWL_DL_INFO)
3890                         dev_printk(KERN_DEBUG, &(pdev->dev),
3891                                    "Disabling hw_scan\n");
3892                 iwl_hw_ops.hw_scan = NULL;
3893         }
3894
3895         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3896         if (!hw) {
3897                 err = -ENOMEM;
3898                 goto out;
3899         }
3900         priv = hw->priv;
3901         /* At this point both hw and priv are allocated. */
3902
3903         SET_IEEE80211_DEV(hw, &pdev->dev);
3904
3905         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3906         priv->cfg = cfg;
3907         priv->pci_dev = pdev;
3908
3909 #ifdef CONFIG_IWLWIFI_DEBUG
3910         priv->debug_level = priv->cfg->mod_params->debug;
3911         atomic_set(&priv->restrict_refcnt, 0);
3912 #endif
3913
3914         /**************************
3915          * 2. Initializing PCI bus
3916          **************************/
3917         if (pci_enable_device(pdev)) {
3918                 err = -ENODEV;
3919                 goto out_ieee80211_free_hw;
3920         }
3921
3922         pci_set_master(pdev);
3923
3924         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3925         if (!err)
3926                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3927         if (err) {
3928                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3929                 if (!err)
3930                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3931                 /* both attempts failed: */
3932                 if (err) {
3933                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3934                                 DRV_NAME);
3935                         goto out_pci_disable_device;
3936                 }
3937         }
3938
3939         err = pci_request_regions(pdev, DRV_NAME);
3940         if (err)
3941                 goto out_pci_disable_device;
3942
3943         pci_set_drvdata(pdev, priv);
3944
3945
3946         /***********************
3947          * 3. Read REV register
3948          ***********************/
3949         priv->hw_base = pci_iomap(pdev, 0, 0);
3950         if (!priv->hw_base) {
3951                 err = -ENODEV;
3952                 goto out_pci_release_regions;
3953         }
3954
3955         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3956                 (unsigned long long) pci_resource_len(pdev, 0));
3957         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3958
3959         iwl_hw_detect(priv);
3960         printk(KERN_INFO DRV_NAME
3961                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3962                 priv->cfg->name, priv->hw_rev);
3963
3964         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3965          * PCI Tx retries from interfering with C3 CPU state */
3966         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3967
3968         /* amp init */
3969         err = priv->cfg->ops->lib->apm_ops.init(priv);
3970         if (err < 0) {
3971                 IWL_DEBUG_INFO("Failed to init APMG\n");
3972                 goto out_iounmap;
3973         }
3974         /*****************
3975          * 4. Read EEPROM
3976          *****************/
3977         /* Read the EEPROM */
3978         err = iwl_eeprom_init(priv);
3979         if (err) {
3980                 IWL_ERROR("Unable to init EEPROM\n");
3981                 goto out_iounmap;
3982         }
3983         err = iwl_eeprom_check_version(priv);
3984         if (err)
3985                 goto out_iounmap;
3986
3987         /* extract MAC Address */
3988         iwl_eeprom_get_mac(priv, priv->mac_addr);
3989         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3990         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3991
3992         /************************
3993          * 5. Setup HW constants
3994          ************************/
3995         if (iwl_set_hw_params(priv)) {
3996                 IWL_ERROR("failed to set hw parameters\n");
3997                 goto out_free_eeprom;
3998         }
3999
4000         /*******************
4001          * 6. Setup priv
4002          *******************/
4003
4004         err = iwl_init_drv(priv);
4005         if (err)
4006                 goto out_free_eeprom;
4007         /* At this point both hw and priv are initialized. */
4008
4009         /**********************************
4010          * 7. Initialize module parameters
4011          **********************************/
4012
4013         /* Disable radio (SW RF KILL) via parameter when loading driver */
4014         if (priv->cfg->mod_params->disable) {
4015                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4016                 IWL_DEBUG_INFO("Radio disabled.\n");
4017         }
4018
4019         /********************
4020          * 8. Setup services
4021          ********************/
4022         spin_lock_irqsave(&priv->lock, flags);
4023         iwl_disable_interrupts(priv);
4024         spin_unlock_irqrestore(&priv->lock, flags);
4025
4026         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
4027         if (err) {
4028                 IWL_ERROR("failed to create sysfs device attributes\n");
4029                 goto out_uninit_drv;
4030         }
4031
4032
4033         iwl_setup_deferred_work(priv);
4034         iwl_setup_rx_handlers(priv);
4035
4036         /********************
4037          * 9. Conclude
4038          ********************/
4039         pci_save_state(pdev);
4040         pci_disable_device(pdev);
4041
4042         /**********************************
4043          * 10. Setup and register mac80211
4044          **********************************/
4045
4046         err = iwl_setup_mac(priv);
4047         if (err)
4048                 goto out_remove_sysfs;
4049
4050         err = iwl_dbgfs_register(priv, DRV_NAME);
4051         if (err)
4052                 IWL_ERROR("failed to create debugfs files\n");
4053
4054         err = iwl_rfkill_init(priv);
4055         if (err)
4056                 IWL_ERROR("Unable to initialize RFKILL system. "
4057                                   "Ignoring error: %d\n", err);
4058         iwl_power_initialize(priv);
4059         return 0;
4060
4061  out_remove_sysfs:
4062         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4063  out_uninit_drv:
4064         iwl_uninit_drv(priv);
4065  out_free_eeprom:
4066         iwl_eeprom_free(priv);
4067  out_iounmap:
4068         pci_iounmap(pdev, priv->hw_base);
4069  out_pci_release_regions:
4070         pci_release_regions(pdev);
4071         pci_set_drvdata(pdev, NULL);
4072  out_pci_disable_device:
4073         pci_disable_device(pdev);
4074  out_ieee80211_free_hw:
4075         ieee80211_free_hw(priv->hw);
4076  out:
4077         return err;
4078 }
4079
4080 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4081 {
4082         struct iwl_priv *priv = pci_get_drvdata(pdev);
4083         unsigned long flags;
4084
4085         if (!priv)
4086                 return;
4087
4088         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4089
4090         iwl_dbgfs_unregister(priv);
4091         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4092
4093         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4094          * to be called and iwl_down since we are removing the device
4095          * we need to set STATUS_EXIT_PENDING bit.
4096          */
4097         set_bit(STATUS_EXIT_PENDING, &priv->status);
4098         if (priv->mac80211_registered) {
4099                 ieee80211_unregister_hw(priv->hw);
4100                 priv->mac80211_registered = 0;
4101         } else {
4102                 iwl_down(priv);
4103         }
4104
4105         /* make sure we flush any pending irq or
4106          * tasklet for the driver
4107          */
4108         spin_lock_irqsave(&priv->lock, flags);
4109         iwl_disable_interrupts(priv);
4110         spin_unlock_irqrestore(&priv->lock, flags);
4111
4112         iwl_synchronize_irq(priv);
4113
4114         iwl_rfkill_unregister(priv);
4115         iwl_dealloc_ucode_pci(priv);
4116
4117         if (priv->rxq.bd)
4118                 iwl_rx_queue_free(priv, &priv->rxq);
4119         iwl_hw_txq_ctx_free(priv);
4120
4121         iwl_clear_stations_table(priv);
4122         iwl_eeprom_free(priv);
4123
4124
4125         /*netif_stop_queue(dev); */
4126         flush_workqueue(priv->workqueue);
4127
4128         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4129          * priv->workqueue... so we can't take down the workqueue
4130          * until now... */
4131         destroy_workqueue(priv->workqueue);
4132         priv->workqueue = NULL;
4133
4134         pci_iounmap(pdev, priv->hw_base);
4135         pci_release_regions(pdev);
4136         pci_disable_device(pdev);
4137         pci_set_drvdata(pdev, NULL);
4138
4139         iwl_uninit_drv(priv);
4140
4141         if (priv->ibss_beacon)
4142                 dev_kfree_skb(priv->ibss_beacon);
4143
4144         ieee80211_free_hw(priv->hw);
4145 }
4146
4147 #ifdef CONFIG_PM
4148
4149 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4150 {
4151         struct iwl_priv *priv = pci_get_drvdata(pdev);
4152
4153         if (priv->is_open) {
4154                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4155                 iwl_mac_stop(priv->hw);
4156                 priv->is_open = 1;
4157         }
4158
4159         pci_set_power_state(pdev, PCI_D3hot);
4160
4161         return 0;
4162 }
4163
4164 static int iwl_pci_resume(struct pci_dev *pdev)
4165 {
4166         struct iwl_priv *priv = pci_get_drvdata(pdev);
4167
4168         pci_set_power_state(pdev, PCI_D0);
4169
4170         if (priv->is_open)
4171                 iwl_mac_start(priv->hw);
4172
4173         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4174         return 0;
4175 }
4176
4177 #endif /* CONFIG_PM */
4178
4179 /*****************************************************************************
4180  *
4181  * driver and module entry point
4182  *
4183  *****************************************************************************/
4184
4185 /* Hardware specific file defines the PCI IDs table for that hardware module */
4186 static struct pci_device_id iwl_hw_card_ids[] = {
4187 #ifdef CONFIG_IWL4965
4188         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4189         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4190 #endif /* CONFIG_IWL4965 */
4191 #ifdef CONFIG_IWL5000
4192         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4193         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4194         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4195         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4196         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4197         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4198         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4199         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4200         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4201         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4202 /* 5350 WiFi/WiMax */
4203         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4204         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4205         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4206 #endif /* CONFIG_IWL5000 */
4207         {0}
4208 };
4209 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4210
4211 static struct pci_driver iwl_driver = {
4212         .name = DRV_NAME,
4213         .id_table = iwl_hw_card_ids,
4214         .probe = iwl_pci_probe,
4215         .remove = __devexit_p(iwl_pci_remove),
4216 #ifdef CONFIG_PM
4217         .suspend = iwl_pci_suspend,
4218         .resume = iwl_pci_resume,
4219 #endif
4220 };
4221
4222 static int __init iwl_init(void)
4223 {
4224
4225         int ret;
4226         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4227         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4228
4229         ret = iwlagn_rate_control_register();
4230         if (ret) {
4231                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4232                 return ret;
4233         }
4234
4235         ret = pci_register_driver(&iwl_driver);
4236         if (ret) {
4237                 IWL_ERROR("Unable to initialize PCI module\n");
4238                 goto error_register;
4239         }
4240
4241         return ret;
4242
4243 error_register:
4244         iwlagn_rate_control_unregister();
4245         return ret;
4246 }
4247
4248 static void __exit iwl_exit(void)
4249 {
4250         pci_unregister_driver(&iwl_driver);
4251         iwlagn_rate_control_unregister();
4252 }
4253
4254 module_exit(iwl_exit);
4255 module_init(iwl_init);