git.oblomov.eu Git - linux-2.6/blob - 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_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 112  * @priv: staging_rxon is compared to active_rxon
 113  *
 114  * If the RXON structure is changing enough to require a new tune,
 115  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 116  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 117  */
 118 static int iwl_full_rxon_required(struct iwl_priv *priv)
 119 {
 120
 121         /* These items are only settable from the full RXON command */
 122         if (!(iwl_is_associated(priv)) ||
 123             compare_ether_addr(priv->staging_rxon.bssid_addr,
 124                                priv->active_rxon.bssid_addr) ||
 125             compare_ether_addr(priv->staging_rxon.node_addr,
 126                                priv->active_rxon.node_addr) ||
 127             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 128                                priv->active_rxon.wlap_bssid_addr) ||
 129             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 130             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 131             (priv->staging_rxon.air_propagation !=
 132              priv->active_rxon.air_propagation) ||
 133             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 134              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 135             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 136              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 137             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 138                 return 1;
 139
 140         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 141          * be updated with the RXON_ASSOC command -- however only some
 142          * flag transitions are allowed using RXON_ASSOC */
 143
 144         /* Check if we are not switching bands */
 145         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 146             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 147                 return 1;
 148
 149         /* Check if we are switching association toggle */
 150         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 151                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 152                 return 1;
 153
 154         return 0;
 155 }
 156
 157 /**
 158  * iwl_commit_rxon - commit staging_rxon to hardware
 159  *
 160  * The RXON command in staging_rxon is committed to the hardware and
 161  * the active_rxon structure is updated with the new data.  This
 162  * function correctly transitions out of the RXON_ASSOC_MSK state if
 163  * a HW tune is required based on the RXON structure changes.
 164  */
 165 static int iwl_commit_rxon(struct iwl_priv *priv)
 166 {
 167         /* cast away the const for active_rxon in this function */
 168         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 169         int ret;
 170         bool new_assoc =
 171                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 172
 173         if (!iwl_is_alive(priv))
 174                 return -EBUSY;
 175
 176         /* always get timestamp with Rx frame */
 177         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 178         /* allow CTS-to-self if possible. this is relevant only for
 179          * 5000, but will not damage 4965 */
 180         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 181
 182         ret = iwl_agn_check_rxon_cmd(&priv->staging_rxon);
 183         if (ret) {
 184                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 185                 return -EINVAL;
 186         }
 187
 188         /* If we don't need to send a full RXON, we can use
 189          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 190          * and other flags for the current radio configuration. */
 191         if (!iwl_full_rxon_required(priv)) {
 192                 ret = iwl_send_rxon_assoc(priv);
 193                 if (ret) {
 194                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 195                         return ret;
 196                 }
 197
 198                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 199                 return 0;
 200         }
 201
 202         /* station table will be cleared */
 203         priv->assoc_station_added = 0;
 204
 205         /* If we are currently associated and the new config requires
 206          * an RXON_ASSOC and the new config wants the associated mask enabled,
 207          * we must clear the associated from the active configuration
 208          * before we apply the new config */
 209         if (iwl_is_associated(priv) && new_assoc) {
 210                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 211                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 212
 213                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 214                                       sizeof(struct iwl_rxon_cmd),
 215                                       &priv->active_rxon);
 216
 217                 /* If the mask clearing failed then we set
 218                  * active_rxon back to what it was previously */
 219                 if (ret) {
 220                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 221                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 222                         return ret;
 223                 }
 224         }
 225
 226         IWL_DEBUG_INFO("Sending RXON\n"
 227                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 228                        "* channel = %d\n"
 229                        "* bssid = %pM\n",
 230                        (new_assoc ? "" : "out"),
 231                        le16_to_cpu(priv->staging_rxon.channel),
 232                        priv->staging_rxon.bssid_addr);
 233
 234         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 235
 236         /* Apply the new configuration
 237          * RXON unassoc clears the station table in uCode, send it before
 238          * we add the bcast station. If assoc bit is set, we will send RXON
 239          * after having added the bcast and bssid station.
 240          */
 241         if (!new_assoc) {
 242                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 243                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 244                 if (ret) {
 245                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 246                         return ret;
 247                 }
 248                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 249         }
 250
 251         iwl_clear_stations_table(priv);
 252
 253         if (!priv->error_recovering)
 254                 priv->start_calib = 0;
 255
 256         /* Add the broadcast address so we can send broadcast frames */
 257         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 258                                                 IWL_INVALID_STATION) {
 259                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 260                 return -EIO;
 261         }
 262
 263         /* If we have set the ASSOC_MSK and we are in BSS mode then
 264          * add the IWL_AP_ID to the station rate table */
 265         if (new_assoc) {
 266                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 267                         ret = iwl_rxon_add_station(priv,
 268                                            priv->active_rxon.bssid_addr, 1);
 269                         if (ret == IWL_INVALID_STATION) {
 270                                 IWL_ERROR("Error adding AP address for TX.\n");
 271                                 return -EIO;
 272                         }
 273                         priv->assoc_station_added = 1;
 274                         if (priv->default_wep_key &&
 275                             iwl_send_static_wepkey_cmd(priv, 0))
 276                                 IWL_ERROR("Could not send WEP static key.\n");
 277                 }
 278
 279                 /* Apply the new configuration
 280                  * RXON assoc doesn't clear the station table in uCode,
 281                  */
 282                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 283                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 284                 if (ret) {
 285                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 286                         return ret;
 287                 }
 288                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 289         }
 290
 291         iwl_init_sensitivity(priv);
 292
 293         /* If we issue a new RXON command which required a tune then we must
 294          * send a new TXPOWER command or we won't be able to Tx any frames */
 295         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 296         if (ret) {
 297                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 298                 return ret;
 299         }
 300
 301         return 0;
 302 }
 303
 304 void iwl_update_chain_flags(struct iwl_priv *priv)
 305 {
 306
 307         iwl_set_rxon_chain(priv);
 308         iwl_commit_rxon(priv);
 309 }
 310
 311 static int iwl_send_bt_config(struct iwl_priv *priv)
 312 {
 313         struct iwl4965_bt_cmd bt_cmd = {
 314                 .flags = 3,
 315                 .lead_time = 0xAA,
 316                 .max_kill = 1,
 317                 .kill_ack_mask = 0,
 318                 .kill_cts_mask = 0,
 319         };
 320
 321         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 322                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 323 }
 324
 325 static void iwl_clear_free_frames(struct iwl_priv *priv)
 326 {
 327         struct list_head *element;
 328
 329         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 330                        priv->frames_count);
 331
 332         while (!list_empty(&priv->free_frames)) {
 333                 element = priv->free_frames.next;
 334                 list_del(element);
 335                 kfree(list_entry(element, struct iwl_frame, list));
 336                 priv->frames_count--;
 337         }
 338
 339         if (priv->frames_count) {
 340                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 341                             priv->frames_count);
 342                 priv->frames_count = 0;
 343         }
 344 }
 345
 346 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 347 {
 348         struct iwl_frame *frame;
 349         struct list_head *element;
 350         if (list_empty(&priv->free_frames)) {
 351                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 352                 if (!frame) {
 353                         IWL_ERROR("Could not allocate frame!\n");
 354                         return NULL;
 355                 }
 356
 357                 priv->frames_count++;
 358                 return frame;
 359         }
 360
 361         element = priv->free_frames.next;
 362         list_del(element);
 363         return list_entry(element, struct iwl_frame, list);
 364 }
 365
 366 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 367 {
 368         memset(frame, 0, sizeof(*frame));
 369         list_add(&frame->list, &priv->free_frames);
 370 }
 371
 372 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 373                                           struct ieee80211_hdr *hdr,
 374                                           const u8 *dest, int left)
 375 {
 376         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 377             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 378              (priv->iw_mode != NL80211_IFTYPE_AP)))
 379                 return 0;
 380
 381         if (priv->ibss_beacon->len > left)
 382                 return 0;
 383
 384         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 385
 386         return priv->ibss_beacon->len;
 387 }
 388
 389 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 390 {
 391         int i;
 392         int rate_mask;
 393
 394         /* Set rate mask*/
 395         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 396                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 397         else
 398                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 399
 400         /* Find lowest valid rate */
 401         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 402                                         i = iwl_rates[i].next_ieee) {
 403                 if (rate_mask & (1 << i))
 404                         return iwl_rates[i].plcp;
 405         }
 406
 407         /* No valid rate was found. Assign the lowest one */
 408         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 409                 return IWL_RATE_1M_PLCP;
 410         else
 411                 return IWL_RATE_6M_PLCP;
 412 }
 413
 414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 415                                        struct iwl_frame *frame, u8 rate)
 416 {
 417         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 418         unsigned int frame_size;
 419
 420         tx_beacon_cmd = &frame->u.beacon;
 421         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 422
 423         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 424         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 425
 426         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 427                                 iwl_bcast_addr,
 428                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 429
 430         BUG_ON(frame_size > MAX_MPDU_SIZE);
 431         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 432
 433         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 434                 tx_beacon_cmd->tx.rate_n_flags =
 435                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 436         else
 437                 tx_beacon_cmd->tx.rate_n_flags =
 438                         iwl_hw_set_rate_n_flags(rate, 0);
 439
 440         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 441                                      TX_CMD_FLG_TSF_MSK |
 442                                      TX_CMD_FLG_STA_RATE_MSK;
 443
 444         return sizeof(*tx_beacon_cmd) + frame_size;
 445 }
 446 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 447 {
 448         struct iwl_frame *frame;
 449         unsigned int frame_size;
 450         int rc;
 451         u8 rate;
 452
 453         frame = iwl_get_free_frame(priv);
 454
 455         if (!frame) {
 456                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 457                           "command.\n");
 458                 return -ENOMEM;
 459         }
 460
 461         rate = iwl_rate_get_lowest_plcp(priv);
 462
 463         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 464
 465         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 466                               &frame->u.cmd[0]);
 467
 468         iwl_free_frame(priv, frame);
 469
 470         return rc;
 471 }
 472
 473 /******************************************************************************
 474  *
 475  * Misc. internal state and helper functions
 476  *
 477  ******************************************************************************/
 478
 479 static void iwl_ht_conf(struct iwl_priv *priv,
 480                             struct ieee80211_bss_conf *bss_conf)
 481 {
 482         struct ieee80211_sta_ht_cap *ht_conf;
 483         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 484         struct ieee80211_sta *sta;
 485
 486         IWL_DEBUG_MAC80211("enter: \n");
 487
 488         if (!iwl_conf->is_ht)
 489                 return;
 490
 491
 492         /*
 493          * It is totally wrong to base global information on something
 494          * that is valid only when associated, alas, this driver works
 495          * that way and I don't know how to fix it.
 496          */
 497
 498         rcu_read_lock();
 499         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 500         if (!sta) {
 501                 rcu_read_unlock();
 502                 return;
 503         }
 504         ht_conf = &sta->ht_cap;
 505
 506         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 507                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 508         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 509                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 510
 511         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 512         iwl_conf->max_amsdu_size =
 513                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 514
 515         iwl_conf->supported_chan_width =
 516                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 517
 518         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
 519         /* If no above or below channel supplied disable FAT channel */
 520         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 521             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 522                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 523                 iwl_conf->supported_chan_width = 0;
 524         }
 525
 526         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 527
 528         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 529
 530         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
 531         iwl_conf->ht_protection =
 532                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 533         iwl_conf->non_GF_STA_present =
 534                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 535
 536         rcu_read_unlock();
 537
 538         IWL_DEBUG_MAC80211("leave\n");
 539 }
 540
 541 /*
 542  * QoS  support
 543 */
 544 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 545 {
 546         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 547                 return;
 548
 549         if (!priv->qos_data.qos_enable)
 550                 return;
 551
 552         priv->qos_data.def_qos_parm.qos_flags = 0;
 553
 554         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 555             !priv->qos_data.qos_cap.q_AP.txop_request)
 556                 priv->qos_data.def_qos_parm.qos_flags |=
 557                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 558         if (priv->qos_data.qos_active)
 559                 priv->qos_data.def_qos_parm.qos_flags |=
 560                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 561
 562         if (priv->current_ht_config.is_ht)
 563                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 564
 565         if (force || iwl_is_associated(priv)) {
 566                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 567                                 priv->qos_data.qos_active,
 568                                 priv->qos_data.def_qos_parm.qos_flags);
 569
 570                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 571                                        sizeof(struct iwl_qosparam_cmd),
 572                                        &priv->qos_data.def_qos_parm, NULL);
 573         }
 574 }
 575
 576 #define MAX_UCODE_BEACON_INTERVAL       4096
 577
 578 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 579 {
 580         u16 new_val = 0;
 581         u16 beacon_factor = 0;
 582
 583         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 584                                         / MAX_UCODE_BEACON_INTERVAL;
 585         new_val = beacon_val / beacon_factor;
 586
 587         return new_val;
 588 }
 589
 590 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 591 {
 592         u64 tsf;
 593         s32 interval_tm, rem;
 594         unsigned long flags;
 595         struct ieee80211_conf *conf = NULL;
 596         u16 beacon_int = 0;
 597
 598         conf = ieee80211_get_hw_conf(priv->hw);
 599
 600         spin_lock_irqsave(&priv->lock, flags);
 601         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 602         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 603
 604         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 605                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 606                 priv->rxon_timing.atim_window = 0;
 607         } else {
 608                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 609
 610                 /* TODO: we need to get atim_window from upper stack
 611                  * for now we set to 0 */
 612                 priv->rxon_timing.atim_window = 0;
 613         }
 614
 615         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 616
 617         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 618         interval_tm = beacon_int * 1024;
 619         rem = do_div(tsf, interval_tm);
 620         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 621
 622         spin_unlock_irqrestore(&priv->lock, flags);
 623         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 624                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 625                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 626                         le16_to_cpu(priv->rxon_timing.atim_window));
 627 }
 628
 629 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 630                                    enum ieee80211_band band)
 631 {
 632         if (band == IEEE80211_BAND_5GHZ) {
 633                 priv->staging_rxon.flags &=
 634                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 635                       | RXON_FLG_CCK_MSK);
 636                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 637         } else {
 638                 /* Copied from iwl_post_associate() */
 639                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 640                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 641                 else
 642                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 643
 644                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 645                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 646
 647                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 648                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 649                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 650         }
 651 }
 652
 653 /*
 654  * initialize rxon structure with default values from eeprom
 655  */
 656 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 657 {
 658         const struct iwl_channel_info *ch_info;
 659
 660         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 661
 662         switch (mode) {
 663         case NL80211_IFTYPE_AP:
 664                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 665                 break;
 666
 667         case NL80211_IFTYPE_STATION:
 668                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 669                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 670                 break;
 671
 672         case NL80211_IFTYPE_ADHOC:
 673                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 674                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 675                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 676                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 677                 break;
 678
 679         case NL80211_IFTYPE_MONITOR:
 680                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 681                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 682                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 683                 break;
 684         default:
 685                 IWL_ERROR("Unsupported interface type %d\n", mode);
 686                 break;
 687         }
 688
 689 #if 0
 690         /* TODO:  Figure out when short_preamble would be set and cache from
 691          * that */
 692         if (!hw_to_local(priv->hw)->short_preamble)
 693                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 694         else
 695                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 696 #endif
 697
 698         ch_info = iwl_get_channel_info(priv, priv->band,
 699                                        le16_to_cpu(priv->active_rxon.channel));
 700
 701         if (!ch_info)
 702                 ch_info = &priv->channel_info[0];
 703
 704         /*
 705          * in some case A channels are all non IBSS
 706          * in this case force B/G channel
 707          */
 708         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 709             !(is_channel_ibss(ch_info)))
 710                 ch_info = &priv->channel_info[0];
 711
 712         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 713         priv->band = ch_info->band;
 714
 715         iwl_set_flags_for_band(priv, priv->band);
 716
 717         priv->staging_rxon.ofdm_basic_rates =
 718             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 719         priv->staging_rxon.cck_basic_rates =
 720             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 721
 722         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 723                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 724         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 725         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 726         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 727         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 728         iwl_set_rxon_chain(priv);
 729 }
 730
 731 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 732 {
 733         iwl_connection_init_rx_config(priv, mode);
 734         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 735
 736         iwl_clear_stations_table(priv);
 737
 738         /* dont commit rxon if rf-kill is on*/
 739         if (!iwl_is_ready_rf(priv))
 740                 return -EAGAIN;
 741
 742         cancel_delayed_work(&priv->scan_check);
 743         if (iwl_scan_cancel_timeout(priv, 100)) {
 744                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 745                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 746                 return -EAGAIN;
 747         }
 748
 749         iwl_commit_rxon(priv);
 750
 751         return 0;
 752 }
 753
 754 static void iwl_set_rate(struct iwl_priv *priv)
 755 {
 756         const struct ieee80211_supported_band *hw = NULL;
 757         struct ieee80211_rate *rate;
 758         int i;
 759
 760         hw = iwl_get_hw_mode(priv, priv->band);
 761         if (!hw) {
 762                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 763                 return;
 764         }
 765
 766         priv->active_rate = 0;
 767         priv->active_rate_basic = 0;
 768
 769         for (i = 0; i < hw->n_bitrates; i++) {
 770                 rate = &(hw->bitrates[i]);
 771                 if (rate->hw_value < IWL_RATE_COUNT)
 772                         priv->active_rate |= (1 << rate->hw_value);
 773         }
 774
 775         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 776                        priv->active_rate, priv->active_rate_basic);
 777
 778         /*
 779          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 780          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 781          * OFDM
 782          */
 783         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 784                 priv->staging_rxon.cck_basic_rates =
 785                     ((priv->active_rate_basic &
 786                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 787         else
 788                 priv->staging_rxon.cck_basic_rates =
 789                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 790
 791         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 792                 priv->staging_rxon.ofdm_basic_rates =
 793                     ((priv->active_rate_basic &
 794                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 795                       IWL_FIRST_OFDM_RATE) & 0xFF;
 796         else
 797                 priv->staging_rxon.ofdm_basic_rates =
 798                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 799 }
 800
 801
 802 /******************************************************************************
 803  *
 804  * Generic RX handler implementations
 805  *
 806  ******************************************************************************/
 807 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 808                                 struct iwl_rx_mem_buffer *rxb)
 809 {
 810         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 811         struct iwl_alive_resp *palive;
 812         struct delayed_work *pwork;
 813
 814         palive = &pkt->u.alive_frame;
 815
 816         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 817                        "0x%01X 0x%01X\n",
 818                        palive->is_valid, palive->ver_type,
 819                        palive->ver_subtype);
 820
 821         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 822                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 823                 memcpy(&priv->card_alive_init,
 824                        &pkt->u.alive_frame,
 825                        sizeof(struct iwl_init_alive_resp));
 826                 pwork = &priv->init_alive_start;
 827         } else {
 828                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 829                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 830                        sizeof(struct iwl_alive_resp));
 831                 pwork = &priv->alive_start;
 832         }
 833
 834         /* We delay the ALIVE response by 5ms to
 835          * give the HW RF Kill time to activate... */
 836         if (palive->is_valid == UCODE_VALID_OK)
 837                 queue_delayed_work(priv->workqueue, pwork,
 838                                    msecs_to_jiffies(5));
 839         else
 840                 IWL_WARNING("uCode did not respond OK.\n");
 841 }
 842
 843 static void iwl_rx_reply_error(struct iwl_priv *priv,
 844                                    struct iwl_rx_mem_buffer *rxb)
 845 {
 846         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 847
 848         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 849                 "seq 0x%04X ser 0x%08X\n",
 850                 le32_to_cpu(pkt->u.err_resp.error_type),
 851                 get_cmd_string(pkt->u.err_resp.cmd_id),
 852                 pkt->u.err_resp.cmd_id,
 853                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 854                 le32_to_cpu(pkt->u.err_resp.error_info));
 855 }
 856
 857 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 858
 859 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 860 {
 861         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 862         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 863         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
 864         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 865                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 866         rxon->channel = csa->channel;
 867         priv->staging_rxon.channel = csa->channel;
 868 }
 869
 870 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 871                                       struct iwl_rx_mem_buffer *rxb)
 872 {
 873 #ifdef CONFIG_IWLWIFI_DEBUG
 874         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 875         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
 876         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 877                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 878 #endif
 879 }
 880
 881 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 882                                              struct iwl_rx_mem_buffer *rxb)
 883 {
 884         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 885         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 886                         "notification for %s:\n",
 887                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 888         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 889 }
 890
 891 static void iwl_bg_beacon_update(struct work_struct *work)
 892 {
 893         struct iwl_priv *priv =
 894                 container_of(work, struct iwl_priv, beacon_update);
 895         struct sk_buff *beacon;
 896
 897         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 898         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 899
 900         if (!beacon) {
 901                 IWL_ERROR("update beacon failed\n");
 902                 return;
 903         }
 904
 905         mutex_lock(&priv->mutex);
 906         /* new beacon skb is allocated every time; dispose previous.*/
 907         if (priv->ibss_beacon)
 908                 dev_kfree_skb(priv->ibss_beacon);
 909
 910         priv->ibss_beacon = beacon;
 911         mutex_unlock(&priv->mutex);
 912
 913         iwl_send_beacon_cmd(priv);
 914 }
 915
 916 /**
 917  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 918  *
 919  * This callback is provided in order to send a statistics request.
 920  *
 921  * This timer function is continually reset to execute within
 922  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 923  * was received.  We need to ensure we receive the statistics in order
 924  * to update the temperature used for calibrating the TXPOWER.
 925  */
 926 static void iwl_bg_statistics_periodic(unsigned long data)
 927 {
 928         struct iwl_priv *priv = (struct iwl_priv *)data;
 929
 930         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 931                 return;
 932
 933         /* dont send host command if rf-kill is on */
 934         if (!iwl_is_ready_rf(priv))
 935                 return;
 936
 937         iwl_send_statistics_request(priv, CMD_ASYNC);
 938 }
 939
 940 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 941                                 struct iwl_rx_mem_buffer *rxb)
 942 {
 943 #ifdef CONFIG_IWLWIFI_DEBUG
 944         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 945         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
 946         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 947
 948         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 949                 "tsf %d %d rate %d\n",
 950                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 951                 beacon->beacon_notify_hdr.failure_frame,
 952                 le32_to_cpu(beacon->ibss_mgr_status),
 953                 le32_to_cpu(beacon->high_tsf),
 954                 le32_to_cpu(beacon->low_tsf), rate);
 955 #endif
 956
 957         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 958             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 959                 queue_work(priv->workqueue, &priv->beacon_update);
 960 }
 961
 962 /* Handle notification from uCode that card's power state is changing
 963  * due to software, hardware, or critical temperature RFKILL */
 964 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 965                                     struct iwl_rx_mem_buffer *rxb)
 966 {
 967         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 968         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 969         unsigned long status = priv->status;
 970
 971         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 972                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 973                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 974
 975         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 976                      RF_CARD_DISABLED)) {
 977
 978                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 979                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 980
 981                 if (!iwl_grab_nic_access(priv)) {
 982                         iwl_write_direct32(
 983                                 priv, HBUS_TARG_MBX_C,
 984                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 985
 986                         iwl_release_nic_access(priv);
 987                 }
 988
 989                 if (!(flags & RXON_CARD_DISABLED)) {
 990                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 991                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 992                         if (!iwl_grab_nic_access(priv)) {
 993                                 iwl_write_direct32(
 994                                         priv, HBUS_TARG_MBX_C,
 995                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 996
 997                                 iwl_release_nic_access(priv);
 998                         }
 999                 }
1000
1001                 if (flags & RF_CARD_DISABLED) {
1002                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1003                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1004                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1005                         if (!iwl_grab_nic_access(priv))
1006                                 iwl_release_nic_access(priv);
1007                 }
1008         }
1009
1010         if (flags & HW_CARD_DISABLED)
1011                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1012         else
1013                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1014
1015
1016         if (flags & SW_CARD_DISABLED)
1017                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1018         else
1019                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1020
1021         if (!(flags & RXON_CARD_DISABLED))
1022                 iwl_scan_cancel(priv);
1023
1024         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1025              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1026             (test_bit(STATUS_RF_KILL_SW, &status) !=
1027              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1028                 queue_work(priv->workqueue, &priv->rf_kill);
1029         else
1030                 wake_up_interruptible(&priv->wait_command_queue);
1031 }
1032
1033 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1034 {
1035         int ret;
1036         unsigned long flags;
1037
1038         spin_lock_irqsave(&priv->lock, flags);
1039         ret = iwl_grab_nic_access(priv);
1040         if (ret)
1041                 goto err;
1042
1043         if (src == IWL_PWR_SRC_VAUX) {
1044                 u32 val;
1045                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1046                                             &val);
1047
1048                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1049                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1050                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1051                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1052         } else {
1053                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1054                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1055                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1056         }
1057
1058         iwl_release_nic_access(priv);
1059 err:
1060         spin_unlock_irqrestore(&priv->lock, flags);
1061         return ret;
1062 }
1063
1064 /**
1065  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1066  *
1067  * Setup the RX handlers for each of the reply types sent from the uCode
1068  * to the host.
1069  *
1070  * This function chains into the hardware specific files for them to setup
1071  * any hardware specific handlers as well.
1072  */
1073 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1074 {
1075         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1076         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1077         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1078         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1079         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1080             iwl_rx_pm_debug_statistics_notif;
1081         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1082
1083         /*
1084          * The same handler is used for both the REPLY to a discrete
1085          * statistics request from the host as well as for the periodic
1086          * statistics notifications (after received beacons) from the uCode.
1087          */
1088         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1089         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1090
1091         iwl_setup_spectrum_handlers(priv);
1092         iwl_setup_rx_scan_handlers(priv);
1093
1094         /* status change handler */
1095         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1096
1097         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1098             iwl_rx_missed_beacon_notif;
1099         /* Rx handlers */
1100         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1101         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1102         /* block ack */
1103         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1104         /* Set up hardware specific Rx handlers */
1105         priv->cfg->ops->lib->rx_handler_setup(priv);
1106 }
1107
1108 /*
1109  * this should be called while priv->lock is locked
1110 */
1111 static void __iwl_rx_replenish(struct iwl_priv *priv)
1112 {
1113         iwl_rx_allocate(priv);
1114         iwl_rx_queue_restock(priv);
1115 }
1116
1117
1118 /**
1119  * iwl_rx_handle - Main entry function for receiving responses from uCode
1120  *
1121  * Uses the priv->rx_handlers callback function array to invoke
1122  * the appropriate handlers, including command responses,
1123  * frame-received notifications, and other notifications.
1124  */
1125 void iwl_rx_handle(struct iwl_priv *priv)
1126 {
1127         struct iwl_rx_mem_buffer *rxb;
1128         struct iwl_rx_packet *pkt;
1129         struct iwl_rx_queue *rxq = &priv->rxq;
1130         u32 r, i;
1131         int reclaim;
1132         unsigned long flags;
1133         u8 fill_rx = 0;
1134         u32 count = 8;
1135
1136         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1137          * buffer that the driver may process (last buffer filled by ucode). */
1138         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1139         i = rxq->read;
1140
1141         /* Rx interrupt, but nothing sent from uCode */
1142         if (i == r)
1143                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1144
1145         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1146                 fill_rx = 1;
1147
1148         while (i != r) {
1149                 rxb = rxq->queue[i];
1150
1151                 /* If an RXB doesn't have a Rx queue slot associated with it,
1152                  * then a bug has been introduced in the queue refilling
1153                  * routines -- catch it here */
1154                 BUG_ON(rxb == NULL);
1155
1156                 rxq->queue[i] = NULL;
1157
1158                 dma_sync_single_range_for_cpu(
1159                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1160                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1161                                 priv->hw_params.rx_buf_size,
1162                                 PCI_DMA_FROMDEVICE);
1163                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1164
1165                 /* Reclaim a command buffer only if this packet is a response
1166                  *   to a (driver-originated) command.
1167                  * If the packet (e.g. Rx frame) originated from uCode,
1168                  *   there is no command buffer to reclaim.
1169                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1170                  *   but apparently a few don't get set; catch them here. */
1171                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1172                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1173                         (pkt->hdr.cmd != REPLY_RX) &&
1174                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1175                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1176                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1177                         (pkt->hdr.cmd != REPLY_TX);
1178
1179                 /* Based on type of command response or notification,
1180                  *   handle those that need handling via function in
1181                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1182                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1183                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1184                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1185                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1186                 } else {
1187                         /* No handling needed */
1188                         IWL_DEBUG(IWL_DL_RX,
1189                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1190                                 r, i, get_cmd_string(pkt->hdr.cmd),
1191                                 pkt->hdr.cmd);
1192                 }
1193
1194                 if (reclaim) {
1195                         /* Invoke any callbacks, transfer the skb to caller, and
1196                          * fire off the (possibly) blocking iwl_send_cmd()
1197                          * as we reclaim the driver command queue */
1198                         if (rxb && rxb->skb)
1199                                 iwl_tx_cmd_complete(priv, rxb);
1200                         else
1201                                 IWL_WARNING("Claim null rxb?\n");
1202                 }
1203
1204                 /* For now we just don't re-use anything.  We can tweak this
1205                  * later to try and re-use notification packets and SKBs that
1206                  * fail to Rx correctly */
1207                 if (rxb->skb != NULL) {
1208                         priv->alloc_rxb_skb--;
1209                         dev_kfree_skb_any(rxb->skb);
1210                         rxb->skb = NULL;
1211                 }
1212
1213                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1214                                  priv->hw_params.rx_buf_size + 256,
1215                                  PCI_DMA_FROMDEVICE);
1216                 spin_lock_irqsave(&rxq->lock, flags);
1217                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1218                 spin_unlock_irqrestore(&rxq->lock, flags);
1219                 i = (i + 1) & RX_QUEUE_MASK;
1220                 /* If there are a lot of unused frames,
1221                  * restock the Rx queue so ucode wont assert. */
1222                 if (fill_rx) {
1223                         count++;
1224                         if (count >= 8) {
1225                                 priv->rxq.read = i;
1226                                 __iwl_rx_replenish(priv);
1227                                 count = 0;
1228                         }
1229                 }
1230         }
1231
1232         /* Backtrack one entry */
1233         priv->rxq.read = i;
1234         iwl_rx_queue_restock(priv);
1235 }
1236
1237 #ifdef CONFIG_IWLWIFI_DEBUG
1238 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1239 {
1240         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1241
1242         IWL_DEBUG_RADIO("RX CONFIG:\n");
1243         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1244         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1245         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1246         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1247                         le32_to_cpu(rxon->filter_flags));
1248         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1249         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1250                         rxon->ofdm_basic_rates);
1251         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1252         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1253         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1254         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1255 }
1256 #endif
1257
1258 /* call this function to flush any scheduled tasklet */
1259 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1260 {
1261         /* wait to make sure we flush pending tasklet*/
1262         synchronize_irq(priv->pci_dev->irq);
1263         tasklet_kill(&priv->irq_tasklet);
1264 }
1265
1266 /**
1267  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1268  */
1269 static void iwl_irq_handle_error(struct iwl_priv *priv)
1270 {
1271         /* Set the FW error flag -- cleared on iwl_down */
1272         set_bit(STATUS_FW_ERROR, &priv->status);
1273
1274         /* Cancel currently queued command. */
1275         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1276
1277 #ifdef CONFIG_IWLWIFI_DEBUG
1278         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1279                 iwl_dump_nic_error_log(priv);
1280                 iwl_dump_nic_event_log(priv);
1281                 iwl_print_rx_config_cmd(priv);
1282         }
1283 #endif
1284
1285         wake_up_interruptible(&priv->wait_command_queue);
1286
1287         /* Keep the restart process from trying to send host
1288          * commands by clearing the INIT status bit */
1289         clear_bit(STATUS_READY, &priv->status);
1290
1291         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1292                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1293                           "Restarting adapter due to uCode error.\n");
1294
1295                 if (iwl_is_associated(priv)) {
1296                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1297                                sizeof(priv->recovery_rxon));
1298                         priv->error_recovering = 1;
1299                 }
1300                 if (priv->cfg->mod_params->restart_fw)
1301                         queue_work(priv->workqueue, &priv->restart);
1302         }
1303 }
1304
1305 static void iwl_error_recovery(struct iwl_priv *priv)
1306 {
1307         unsigned long flags;
1308
1309         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1310                sizeof(priv->staging_rxon));
1311         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1312         iwl_commit_rxon(priv);
1313
1314         iwl_rxon_add_station(priv, priv->bssid, 1);
1315
1316         spin_lock_irqsave(&priv->lock, flags);
1317         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1318         priv->error_recovering = 0;
1319         spin_unlock_irqrestore(&priv->lock, flags);
1320 }
1321
1322 static void iwl_irq_tasklet(struct iwl_priv *priv)
1323 {
1324         u32 inta, handled = 0;
1325         u32 inta_fh;
1326         unsigned long flags;
1327 #ifdef CONFIG_IWLWIFI_DEBUG
1328         u32 inta_mask;
1329 #endif
1330
1331         spin_lock_irqsave(&priv->lock, flags);
1332
1333         /* Ack/clear/reset pending uCode interrupts.
1334          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1335          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1336         inta = iwl_read32(priv, CSR_INT);
1337         iwl_write32(priv, CSR_INT, inta);
1338
1339         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1340          * Any new interrupts that happen after this, either while we're
1341          * in this tasklet, or later, will show up in next ISR/tasklet. */
1342         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1343         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1344
1345 #ifdef CONFIG_IWLWIFI_DEBUG
1346         if (priv->debug_level & IWL_DL_ISR) {
1347                 /* just for debug */
1348                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1349                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1350                               inta, inta_mask, inta_fh);
1351         }
1352 #endif
1353
1354         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1355          * atomic, make sure that inta covers all the interrupts that
1356          * we've discovered, even if FH interrupt came in just after
1357          * reading CSR_INT. */
1358         if (inta_fh & CSR49_FH_INT_RX_MASK)
1359                 inta |= CSR_INT_BIT_FH_RX;
1360         if (inta_fh & CSR49_FH_INT_TX_MASK)
1361                 inta |= CSR_INT_BIT_FH_TX;
1362
1363         /* Now service all interrupt bits discovered above. */
1364         if (inta & CSR_INT_BIT_HW_ERR) {
1365                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1366
1367                 /* Tell the device to stop sending interrupts */
1368                 iwl_disable_interrupts(priv);
1369
1370                 iwl_irq_handle_error(priv);
1371
1372                 handled |= CSR_INT_BIT_HW_ERR;
1373
1374                 spin_unlock_irqrestore(&priv->lock, flags);
1375
1376                 return;
1377         }
1378
1379 #ifdef CONFIG_IWLWIFI_DEBUG
1380         if (priv->debug_level & (IWL_DL_ISR)) {
1381                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1382                 if (inta & CSR_INT_BIT_SCD)
1383                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1384                                       "the frame/frames.\n");
1385
1386                 /* Alive notification via Rx interrupt will do the real work */
1387                 if (inta & CSR_INT_BIT_ALIVE)
1388                         IWL_DEBUG_ISR("Alive interrupt\n");
1389         }
1390 #endif
1391         /* Safely ignore these bits for debug checks below */
1392         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1393
1394         /* HW RF KILL switch toggled */
1395         if (inta & CSR_INT_BIT_RF_KILL) {
1396                 int hw_rf_kill = 0;
1397                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1398                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1399                         hw_rf_kill = 1;
1400
1401                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1402                                 hw_rf_kill ? "disable radio" : "enable radio");
1403
1404                 /* driver only loads ucode once setting the interface up.
1405                  * the driver as well won't allow loading if RFKILL is set
1406                  * therefore no need to restart the driver from this handler
1407                  */
1408                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1409                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1410
1411                 handled |= CSR_INT_BIT_RF_KILL;
1412         }
1413
1414         /* Chip got too hot and stopped itself */
1415         if (inta & CSR_INT_BIT_CT_KILL) {
1416                 IWL_ERROR("Microcode CT kill error detected.\n");
1417                 handled |= CSR_INT_BIT_CT_KILL;
1418         }
1419
1420         /* Error detected by uCode */
1421         if (inta & CSR_INT_BIT_SW_ERR) {
1422                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1423                           inta);
1424                 iwl_irq_handle_error(priv);
1425                 handled |= CSR_INT_BIT_SW_ERR;
1426         }
1427
1428         /* uCode wakes up after power-down sleep */
1429         if (inta & CSR_INT_BIT_WAKEUP) {
1430                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1431                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1432                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1433                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1434                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1435                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1436                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1437                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1438
1439                 handled |= CSR_INT_BIT_WAKEUP;
1440         }
1441
1442         /* All uCode command responses, including Tx command responses,
1443          * Rx "responses" (frame-received notification), and other
1444          * notifications from uCode come through here*/
1445         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1446                 iwl_rx_handle(priv);
1447                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1448         }
1449
1450         if (inta & CSR_INT_BIT_FH_TX) {
1451                 IWL_DEBUG_ISR("Tx interrupt\n");
1452                 handled |= CSR_INT_BIT_FH_TX;
1453                 /* FH finished to write, send event */
1454                 priv->ucode_write_complete = 1;
1455                 wake_up_interruptible(&priv->wait_command_queue);
1456         }
1457
1458         if (inta & ~handled)
1459                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1460
1461         if (inta & ~CSR_INI_SET_MASK) {
1462                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1463                          inta & ~CSR_INI_SET_MASK);
1464                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1465         }
1466
1467         /* Re-enable all interrupts */
1468         /* only Re-enable if diabled by irq */
1469         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1470                 iwl_enable_interrupts(priv);
1471
1472 #ifdef CONFIG_IWLWIFI_DEBUG
1473         if (priv->debug_level & (IWL_DL_ISR)) {
1474                 inta = iwl_read32(priv, CSR_INT);
1475                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1476                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1477                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1478                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1479         }
1480 #endif
1481         spin_unlock_irqrestore(&priv->lock, flags);
1482 }
1483
1484 static irqreturn_t iwl_isr(int irq, void *data)
1485 {
1486         struct iwl_priv *priv = data;
1487         u32 inta, inta_mask;
1488         u32 inta_fh;
1489         if (!priv)
1490                 return IRQ_NONE;
1491
1492         spin_lock(&priv->lock);
1493
1494         /* Disable (but don't clear!) interrupts here to avoid
1495          *    back-to-back ISRs and sporadic interrupts from our NIC.
1496          * If we have something to service, the tasklet will re-enable ints.
1497          * If we *don't* have something, we'll re-enable before leaving here. */
1498         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1499         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1500
1501         /* Discover which interrupts are active/pending */
1502         inta = iwl_read32(priv, CSR_INT);
1503         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1504
1505         /* Ignore interrupt if there's nothing in NIC to service.
1506          * This may be due to IRQ shared with another device,
1507          * or due to sporadic interrupts thrown from our NIC. */
1508         if (!inta && !inta_fh) {
1509                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1510                 goto none;
1511         }
1512
1513         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1514                 /* Hardware disappeared. It might have already raised
1515                  * an interrupt */
1516                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1517                 goto unplugged;
1518         }
1519
1520         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1521                       inta, inta_mask, inta_fh);
1522
1523         inta &= ~CSR_INT_BIT_SCD;
1524
1525         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1526         if (likely(inta || inta_fh))
1527                 tasklet_schedule(&priv->irq_tasklet);
1528
1529  unplugged:
1530         spin_unlock(&priv->lock);
1531         return IRQ_HANDLED;
1532
1533  none:
1534         /* re-enable interrupts here since we don't have anything to service. */
1535         /* only Re-enable if diabled by irq */
1536         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1537                 iwl_enable_interrupts(priv);
1538         spin_unlock(&priv->lock);
1539         return IRQ_NONE;
1540 }
1541
1542 /******************************************************************************
1543  *
1544  * uCode download functions
1545  *
1546  ******************************************************************************/
1547
1548 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1549 {
1550         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1551         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1552         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1553         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1554         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1555         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1556 }
1557
1558 static void iwl_nic_start(struct iwl_priv *priv)
1559 {
1560         /* Remove all resets to allow NIC to operate */
1561         iwl_write32(priv, CSR_RESET, 0);
1562 }
1563
1564
1565 /**
1566  * iwl_read_ucode - Read uCode images from disk file.
1567  *
1568  * Copy into buffers for card to fetch via bus-mastering
1569  */
1570 static int iwl_read_ucode(struct iwl_priv *priv)
1571 {
1572         struct iwl_ucode *ucode;
1573         int ret = -EINVAL, index;
1574         const struct firmware *ucode_raw;
1575         const char *name_pre = priv->cfg->fw_name_pre;
1576         const unsigned int api_max = priv->cfg->ucode_api_max;
1577         const unsigned int api_min = priv->cfg->ucode_api_min;
1578         char buf[25];
1579         u8 *src;
1580         size_t len;
1581         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1582
1583         /* Ask kernel firmware_class module to get the boot firmware off disk.
1584          * request_firmware() is synchronous, file is in memory on return. */
1585         for (index = api_max; index >= api_min; index--) {
1586                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1587                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1588                 if (ret < 0) {
1589                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
1590                                   buf, ret);
1591                         if (ret == -ENOENT)
1592                                 continue;
1593                         else
1594                                 goto error;
1595                 } else {
1596                         if (index < api_max)
1597                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1598                                           buf, api_max);
1599                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1600                                        buf, ucode_raw->size);
1601                         break;
1602                 }
1603         }
1604
1605         if (ret < 0)
1606                 goto error;
1607
1608         /* Make sure that we got at least our header! */
1609         if (ucode_raw->size < sizeof(*ucode)) {
1610                 IWL_ERROR("File size way too small!\n");
1611                 ret = -EINVAL;
1612                 goto err_release;
1613         }
1614
1615         /* Data from ucode file:  header followed by uCode images */
1616         ucode = (void *)ucode_raw->data;
1617
1618         priv->ucode_ver = le32_to_cpu(ucode->ver);
1619         api_ver = IWL_UCODE_API(priv->ucode_ver);
1620         inst_size = le32_to_cpu(ucode->inst_size);
1621         data_size = le32_to_cpu(ucode->data_size);
1622         init_size = le32_to_cpu(ucode->init_size);
1623         init_data_size = le32_to_cpu(ucode->init_data_size);
1624         boot_size = le32_to_cpu(ucode->boot_size);
1625
1626         /* api_ver should match the api version forming part of the
1627          * firmware filename ... but we don't check for that and only rely
1628          * on the API version read from firware header from here on forward */
1629
1630         if (api_ver < api_min || api_ver > api_max) {
1631                 IWL_ERROR("Driver unable to support your firmware API. "
1632                           "Driver supports v%u, firmware is v%u.\n",
1633                           api_max, api_ver);
1634                 priv->ucode_ver = 0;
1635                 ret = -EINVAL;
1636                 goto err_release;
1637         }
1638         if (api_ver != api_max)
1639                 IWL_ERROR("Firmware has old API version. Expected v%u, "
1640                           "got v%u. New firmware can be obtained "
1641                           "from http://www.intellinuxwireless.org.\n",
1642                           api_max, api_ver);
1643
1644         printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
1645                        IWL_UCODE_MAJOR(priv->ucode_ver),
1646                        IWL_UCODE_MINOR(priv->ucode_ver),
1647                        IWL_UCODE_API(priv->ucode_ver),
1648                        IWL_UCODE_SERIAL(priv->ucode_ver));
1649
1650         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1651                        priv->ucode_ver);
1652         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1653                        inst_size);
1654         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1655                        data_size);
1656         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1657                        init_size);
1658         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1659                        init_data_size);
1660         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1661                        boot_size);
1662
1663         /* Verify size of file vs. image size info in file's header */
1664         if (ucode_raw->size < sizeof(*ucode) +
1665                 inst_size + data_size + init_size +
1666                 init_data_size + boot_size) {
1667
1668                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1669                                (int)ucode_raw->size);
1670                 ret = -EINVAL;
1671                 goto err_release;
1672         }
1673
1674         /* Verify that uCode images will fit in card's SRAM */
1675         if (inst_size > priv->hw_params.max_inst_size) {
1676                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1677                                inst_size);
1678                 ret = -EINVAL;
1679                 goto err_release;
1680         }
1681
1682         if (data_size > priv->hw_params.max_data_size) {
1683                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1684                                 data_size);
1685                 ret = -EINVAL;
1686                 goto err_release;
1687         }
1688         if (init_size > priv->hw_params.max_inst_size) {
1689                 IWL_DEBUG_INFO
1690                     ("uCode init instr len %d too large to fit in\n",
1691                       init_size);
1692                 ret = -EINVAL;
1693                 goto err_release;
1694         }
1695         if (init_data_size > priv->hw_params.max_data_size) {
1696                 IWL_DEBUG_INFO
1697                     ("uCode init data len %d too large to fit in\n",
1698                       init_data_size);
1699                 ret = -EINVAL;
1700                 goto err_release;
1701         }
1702         if (boot_size > priv->hw_params.max_bsm_size) {
1703                 IWL_DEBUG_INFO
1704                     ("uCode boot instr len %d too large to fit in\n",
1705                       boot_size);
1706                 ret = -EINVAL;
1707                 goto err_release;
1708         }
1709
1710         /* Allocate ucode buffers for card's bus-master loading ... */
1711
1712         /* Runtime instructions and 2 copies of data:
1713          * 1) unmodified from disk
1714          * 2) backup cache for save/restore during power-downs */
1715         priv->ucode_code.len = inst_size;
1716         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1717
1718         priv->ucode_data.len = data_size;
1719         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1720
1721         priv->ucode_data_backup.len = data_size;
1722         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1723
1724         /* Initialization instructions and data */
1725         if (init_size && init_data_size) {
1726                 priv->ucode_init.len = init_size;
1727                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1728
1729                 priv->ucode_init_data.len = init_data_size;
1730                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1731
1732                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1733                         goto err_pci_alloc;
1734         }
1735
1736         /* Bootstrap (instructions only, no data) */
1737         if (boot_size) {
1738                 priv->ucode_boot.len = boot_size;
1739                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1740
1741                 if (!priv->ucode_boot.v_addr)
1742                         goto err_pci_alloc;
1743         }
1744
1745         /* Copy images into buffers for card's bus-master reads ... */
1746
1747         /* Runtime instructions (first block of data in file) */
1748         src = &ucode->data[0];
1749         len = priv->ucode_code.len;
1750         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1751         memcpy(priv->ucode_code.v_addr, src, len);
1752         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1753                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1754
1755         /* Runtime data (2nd block)
1756          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1757         src = &ucode->data[inst_size];
1758         len = priv->ucode_data.len;
1759         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1760         memcpy(priv->ucode_data.v_addr, src, len);
1761         memcpy(priv->ucode_data_backup.v_addr, src, len);
1762
1763         /* Initialization instructions (3rd block) */
1764         if (init_size) {
1765                 src = &ucode->data[inst_size + data_size];
1766                 len = priv->ucode_init.len;
1767                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1768                                 len);
1769                 memcpy(priv->ucode_init.v_addr, src, len);
1770         }
1771
1772         /* Initialization data (4th block) */
1773         if (init_data_size) {
1774                 src = &ucode->data[inst_size + data_size + init_size];
1775                 len = priv->ucode_init_data.len;
1776                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1777                                len);
1778                 memcpy(priv->ucode_init_data.v_addr, src, len);
1779         }
1780
1781         /* Bootstrap instructions (5th block) */
1782         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1783         len = priv->ucode_boot.len;
1784         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1785         memcpy(priv->ucode_boot.v_addr, src, len);
1786
1787         /* We have our copies now, allow OS release its copies */
1788         release_firmware(ucode_raw);
1789         return 0;
1790
1791  err_pci_alloc:
1792         IWL_ERROR("failed to allocate pci memory\n");
1793         ret = -ENOMEM;
1794         iwl_dealloc_ucode_pci(priv);
1795
1796  err_release:
1797         release_firmware(ucode_raw);
1798
1799  error:
1800         return ret;
1801 }
1802
1803 /* temporary */
1804 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1805                                  struct sk_buff *skb);
1806
1807 /**
1808  * iwl_alive_start - called after REPLY_ALIVE notification received
1809  *                   from protocol/runtime uCode (initialization uCode's
1810  *                   Alive gets handled by iwl_init_alive_start()).
1811  */
1812 static void iwl_alive_start(struct iwl_priv *priv)
1813 {
1814         int ret = 0;
1815
1816         IWL_DEBUG_INFO("Runtime Alive received.\n");
1817
1818         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1819                 /* We had an error bringing up the hardware, so take it
1820                  * all the way back down so we can try again */
1821                 IWL_DEBUG_INFO("Alive failed.\n");
1822                 goto restart;
1823         }
1824
1825         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1826          * This is a paranoid check, because we would not have gotten the
1827          * "runtime" alive if code weren't properly loaded.  */
1828         if (iwl_verify_ucode(priv)) {
1829                 /* Runtime instruction load was bad;
1830                  * take it all the way back down so we can try again */
1831                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1832                 goto restart;
1833         }
1834
1835         iwl_clear_stations_table(priv);
1836         ret = priv->cfg->ops->lib->alive_notify(priv);
1837         if (ret) {
1838                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1839                             ret);
1840                 goto restart;
1841         }
1842
1843         /* After the ALIVE response, we can send host commands to the uCode */
1844         set_bit(STATUS_ALIVE, &priv->status);
1845
1846         if (iwl_is_rfkill(priv))
1847                 return;
1848
1849         ieee80211_wake_queues(priv->hw);
1850
1851         priv->active_rate = priv->rates_mask;
1852         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1853
1854         if (iwl_is_associated(priv)) {
1855                 struct iwl_rxon_cmd *active_rxon =
1856                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1857
1858                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1859                        sizeof(priv->staging_rxon));
1860                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1861         } else {
1862                 /* Initialize our rx_config data */
1863                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1864                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1865         }
1866
1867         /* Configure Bluetooth device coexistence support */
1868         iwl_send_bt_config(priv);
1869
1870         iwl_reset_run_time_calib(priv);
1871
1872         /* Configure the adapter for unassociated operation */
1873         iwl_commit_rxon(priv);
1874
1875         /* At this point, the NIC is initialized and operational */
1876         iwl_rf_kill_ct_config(priv);
1877
1878         iwl_leds_register(priv);
1879
1880         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1881         set_bit(STATUS_READY, &priv->status);
1882         wake_up_interruptible(&priv->wait_command_queue);
1883
1884         if (priv->error_recovering)
1885                 iwl_error_recovery(priv);
1886
1887         iwl_power_update_mode(priv, 1);
1888
1889         /* reassociate for ADHOC mode */
1890         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1891                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1892                                                                 priv->vif);
1893                 if (beacon)
1894                         iwl_mac_beacon_update(priv->hw, beacon);
1895         }
1896
1897
1898         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1899                 iwl_set_mode(priv, priv->iw_mode);
1900
1901         return;
1902
1903  restart:
1904         queue_work(priv->workqueue, &priv->restart);
1905 }
1906
1907 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1908
1909 static void __iwl_down(struct iwl_priv *priv)
1910 {
1911         unsigned long flags;
1912         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1913
1914         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1915
1916         if (!exit_pending)
1917                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1918
1919         iwl_leds_unregister(priv);
1920
1921         iwl_clear_stations_table(priv);
1922
1923         /* Unblock any waiting calls */
1924         wake_up_interruptible_all(&priv->wait_command_queue);
1925
1926         /* Wipe out the EXIT_PENDING status bit if we are not actually
1927          * exiting the module */
1928         if (!exit_pending)
1929                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1930
1931         /* stop and reset the on-board processor */
1932         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1933
1934         /* tell the device to stop sending interrupts */
1935         spin_lock_irqsave(&priv->lock, flags);
1936         iwl_disable_interrupts(priv);
1937         spin_unlock_irqrestore(&priv->lock, flags);
1938         iwl_synchronize_irq(priv);
1939
1940         if (priv->mac80211_registered)
1941                 ieee80211_stop_queues(priv->hw);
1942
1943         /* If we have not previously called iwl_init() then
1944          * clear all bits but the RF Kill and SUSPEND bits and return */
1945         if (!iwl_is_init(priv)) {
1946                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1947                                         STATUS_RF_KILL_HW |
1948                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1949                                         STATUS_RF_KILL_SW |
1950                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1951                                         STATUS_GEO_CONFIGURED |
1952                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1953                                         STATUS_IN_SUSPEND |
1954                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1955                                         STATUS_EXIT_PENDING;
1956                 goto exit;
1957         }
1958
1959         /* ...otherwise clear out all the status bits but the RF Kill and
1960          * SUSPEND bits and continue taking the NIC down. */
1961         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1962                                 STATUS_RF_KILL_HW |
1963                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1964                                 STATUS_RF_KILL_SW |
1965                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1966                                 STATUS_GEO_CONFIGURED |
1967                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1968                                 STATUS_IN_SUSPEND |
1969                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1970                                 STATUS_FW_ERROR |
1971                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1972                                 STATUS_EXIT_PENDING;
1973
1974         spin_lock_irqsave(&priv->lock, flags);
1975         iwl_clear_bit(priv, CSR_GP_CNTRL,
1976                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1977         spin_unlock_irqrestore(&priv->lock, flags);
1978
1979         iwl_txq_ctx_stop(priv);
1980         iwl_rxq_stop(priv);
1981
1982         spin_lock_irqsave(&priv->lock, flags);
1983         if (!iwl_grab_nic_access(priv)) {
1984                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1985                                          APMG_CLK_VAL_DMA_CLK_RQT);
1986                 iwl_release_nic_access(priv);
1987         }
1988         spin_unlock_irqrestore(&priv->lock, flags);
1989
1990         udelay(5);
1991
1992         /* FIXME: apm_ops.suspend(priv) */
1993         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1994                 priv->cfg->ops->lib->apm_ops.stop(priv);
1995         else
1996                 priv->cfg->ops->lib->apm_ops.reset(priv);
1997  exit:
1998         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1999
2000         if (priv->ibss_beacon)
2001                 dev_kfree_skb(priv->ibss_beacon);
2002         priv->ibss_beacon = NULL;
2003
2004         /* clear out any free frames */
2005         iwl_clear_free_frames(priv);
2006 }
2007
2008 static void iwl_down(struct iwl_priv *priv)
2009 {
2010         mutex_lock(&priv->mutex);
2011         __iwl_down(priv);
2012         mutex_unlock(&priv->mutex);
2013
2014         iwl_cancel_deferred_work(priv);
2015 }
2016
2017 #define MAX_HW_RESTARTS 5
2018
2019 static int __iwl_up(struct iwl_priv *priv)
2020 {
2021         int i;
2022         int ret;
2023
2024         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2025                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2026                 return -EIO;
2027         }
2028
2029         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2030                 IWL_ERROR("ucode not available for device bringup\n");
2031                 return -EIO;
2032         }
2033
2034         /* If platform's RF_KILL switch is NOT set to KILL */
2035         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2036                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2037         else
2038                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2039
2040         if (iwl_is_rfkill(priv)) {
2041                 iwl_enable_interrupts(priv);
2042                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2043                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2044                 return 0;
2045         }
2046
2047         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2048
2049         ret = iwl_hw_nic_init(priv);
2050         if (ret) {
2051                 IWL_ERROR("Unable to init nic\n");
2052                 return ret;
2053         }
2054
2055         /* make sure rfkill handshake bits are cleared */
2056         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2057         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2058                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2059
2060         /* clear (again), then enable host interrupts */
2061         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2062         iwl_enable_interrupts(priv);
2063
2064         /* really make sure rfkill handshake bits are cleared */
2065         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2066         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2067
2068         /* Copy original ucode data image from disk into backup cache.
2069          * This will be used to initialize the on-board processor's
2070          * data SRAM for a clean start when the runtime program first loads. */
2071         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2072                priv->ucode_data.len);
2073
2074         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2075
2076                 iwl_clear_stations_table(priv);
2077
2078                 /* load bootstrap state machine,
2079                  * load bootstrap program into processor's memory,
2080                  * prepare to load the "initialize" uCode */
2081                 ret = priv->cfg->ops->lib->load_ucode(priv);
2082
2083                 if (ret) {
2084                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2085                         continue;
2086                 }
2087
2088                 /* Clear out the uCode error bit if it is set */
2089                 clear_bit(STATUS_FW_ERROR, &priv->status);
2090
2091                 /* start card; "initialize" will load runtime ucode */
2092                 iwl_nic_start(priv);
2093
2094                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2095
2096                 return 0;
2097         }
2098
2099         set_bit(STATUS_EXIT_PENDING, &priv->status);
2100         __iwl_down(priv);
2101         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2102
2103         /* tried to restart and config the device for as long as our
2104          * patience could withstand */
2105         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2106         return -EIO;
2107 }
2108
2109
2110 /*****************************************************************************
2111  *
2112  * Workqueue callbacks
2113  *
2114  *****************************************************************************/
2115
2116 static void iwl_bg_init_alive_start(struct work_struct *data)
2117 {
2118         struct iwl_priv *priv =
2119             container_of(data, struct iwl_priv, init_alive_start.work);
2120
2121         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2122                 return;
2123
2124         mutex_lock(&priv->mutex);
2125         priv->cfg->ops->lib->init_alive_start(priv);
2126         mutex_unlock(&priv->mutex);
2127 }
2128
2129 static void iwl_bg_alive_start(struct work_struct *data)
2130 {
2131         struct iwl_priv *priv =
2132             container_of(data, struct iwl_priv, alive_start.work);
2133
2134         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2135                 return;
2136
2137         mutex_lock(&priv->mutex);
2138         iwl_alive_start(priv);
2139         mutex_unlock(&priv->mutex);
2140 }
2141
2142 static void iwl_bg_rf_kill(struct work_struct *work)
2143 {
2144         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2145
2146         wake_up_interruptible(&priv->wait_command_queue);
2147
2148         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2149                 return;
2150
2151         mutex_lock(&priv->mutex);
2152
2153         if (!iwl_is_rfkill(priv)) {
2154                 IWL_DEBUG(IWL_DL_RF_KILL,
2155                           "HW and/or SW RF Kill no longer active, restarting "
2156                           "device\n");
2157                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2158                         queue_work(priv->workqueue, &priv->restart);
2159         } else {
2160                 /* make sure mac80211 stop sending Tx frame */
2161                 if (priv->mac80211_registered)
2162                         ieee80211_stop_queues(priv->hw);
2163
2164                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2165                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2166                                           "disabled by SW switch\n");
2167                 else
2168                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2169                                     "Kill switch must be turned off for "
2170                                     "wireless networking to work.\n");
2171         }
2172         mutex_unlock(&priv->mutex);
2173         iwl_rfkill_set_hw_state(priv);
2174 }
2175
2176 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2177 {
2178         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2179                         run_time_calib_work);
2180
2181         mutex_lock(&priv->mutex);
2182
2183         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2184             test_bit(STATUS_SCANNING, &priv->status)) {
2185                 mutex_unlock(&priv->mutex);
2186                 return;
2187         }
2188
2189         if (priv->start_calib) {
2190                 iwl_chain_noise_calibration(priv, &priv->statistics);
2191
2192                 iwl_sensitivity_calibration(priv, &priv->statistics);
2193         }
2194
2195         mutex_unlock(&priv->mutex);
2196         return;
2197 }
2198
2199 static void iwl_bg_up(struct work_struct *data)
2200 {
2201         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2202
2203         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2204                 return;
2205
2206         mutex_lock(&priv->mutex);
2207         __iwl_up(priv);
2208         mutex_unlock(&priv->mutex);
2209         iwl_rfkill_set_hw_state(priv);
2210 }
2211
2212 static void iwl_bg_restart(struct work_struct *data)
2213 {
2214         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2215
2216         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2217                 return;
2218
2219         iwl_down(priv);
2220         queue_work(priv->workqueue, &priv->up);
2221 }
2222
2223 static void iwl_bg_rx_replenish(struct work_struct *data)
2224 {
2225         struct iwl_priv *priv =
2226             container_of(data, struct iwl_priv, rx_replenish);
2227
2228         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2229                 return;
2230
2231         mutex_lock(&priv->mutex);
2232         iwl_rx_replenish(priv);
2233         mutex_unlock(&priv->mutex);
2234 }
2235
2236 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2237
2238 static void iwl_post_associate(struct iwl_priv *priv)
2239 {
2240         struct ieee80211_conf *conf = NULL;
2241         int ret = 0;
2242         unsigned long flags;
2243
2244         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2245                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2246                 return;
2247         }
2248
2249         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2250                         priv->assoc_id, priv->active_rxon.bssid_addr);
2251
2252
2253         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2254                 return;
2255
2256
2257         if (!priv->vif || !priv->is_open)
2258                 return;
2259
2260         iwl_power_cancel_timeout(priv);
2261         iwl_scan_cancel_timeout(priv, 200);
2262
2263         conf = ieee80211_get_hw_conf(priv->hw);
2264
2265         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2266         iwl_commit_rxon(priv);
2267
2268         iwl_setup_rxon_timing(priv);
2269         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2270                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2271         if (ret)
2272                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2273                             "Attempting to continue.\n");
2274
2275         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2276
2277         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2278
2279         iwl_set_rxon_chain(priv);
2280         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2281
2282         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2283                         priv->assoc_id, priv->beacon_int);
2284
2285         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2286                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2287         else
2288                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2289
2290         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2291                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2292                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2293                 else
2294                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2295
2296                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2297                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2298
2299         }
2300
2301         iwl_commit_rxon(priv);
2302
2303         switch (priv->iw_mode) {
2304         case NL80211_IFTYPE_STATION:
2305                 break;
2306
2307         case NL80211_IFTYPE_ADHOC:
2308
2309                 /* assume default assoc id */
2310                 priv->assoc_id = 1;
2311
2312                 iwl_rxon_add_station(priv, priv->bssid, 0);
2313                 iwl_send_beacon_cmd(priv);
2314
2315                 break;
2316
2317         default:
2318                 IWL_ERROR("%s Should not be called in %d mode\n",
2319                           __func__, priv->iw_mode);
2320                 break;
2321         }
2322
2323         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2324                 priv->assoc_station_added = 1;
2325
2326         spin_lock_irqsave(&priv->lock, flags);
2327         iwl_activate_qos(priv, 0);
2328         spin_unlock_irqrestore(&priv->lock, flags);
2329
2330         /* the chain noise calibration will enabled PM upon completion
2331          * If chain noise has already been run, then we need to enable
2332          * power management here */
2333         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2334                 iwl_power_enable_management(priv);
2335
2336         /* Enable Rx differential gain and sensitivity calibrations */
2337         iwl_chain_noise_reset(priv);
2338         priv->start_calib = 1;
2339
2340 }
2341
2342 /*****************************************************************************
2343  *
2344  * mac80211 entry point functions
2345  *
2346  *****************************************************************************/
2347
2348 #define UCODE_READY_TIMEOUT     (4 * HZ)
2349
2350 static int iwl_mac_start(struct ieee80211_hw *hw)
2351 {
2352         struct iwl_priv *priv = hw->priv;
2353         int ret;
2354         u16 pci_cmd;
2355
2356         IWL_DEBUG_MAC80211("enter\n");
2357
2358         if (pci_enable_device(priv->pci_dev)) {
2359                 IWL_ERROR("Fail to pci_enable_device\n");
2360                 return -ENODEV;
2361         }
2362         pci_restore_state(priv->pci_dev);
2363         pci_enable_msi(priv->pci_dev);
2364
2365         /* enable interrupts if needed: hw bug w/a */
2366         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2367         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2368                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2369                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2370         }
2371
2372         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2373                           DRV_NAME, priv);
2374         if (ret) {
2375                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2376                 goto out_disable_msi;
2377         }
2378
2379         /* we should be verifying the device is ready to be opened */
2380         mutex_lock(&priv->mutex);
2381
2382         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2383         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2384          * ucode filename and max sizes are card-specific. */
2385
2386         if (!priv->ucode_code.len) {
2387                 ret = iwl_read_ucode(priv);
2388                 if (ret) {
2389                         IWL_ERROR("Could not read microcode: %d\n", ret);
2390                         mutex_unlock(&priv->mutex);
2391                         goto out_release_irq;
2392                 }
2393         }
2394
2395         ret = __iwl_up(priv);
2396
2397         mutex_unlock(&priv->mutex);
2398
2399         iwl_rfkill_set_hw_state(priv);
2400
2401         if (ret)
2402                 goto out_release_irq;
2403
2404         if (iwl_is_rfkill(priv))
2405                 goto out;
2406
2407         IWL_DEBUG_INFO("Start UP work done.\n");
2408
2409         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2410                 return 0;
2411
2412         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2413          * mac80211 will not be run successfully. */
2414         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2415                         test_bit(STATUS_READY, &priv->status),
2416                         UCODE_READY_TIMEOUT);
2417         if (!ret) {
2418                 if (!test_bit(STATUS_READY, &priv->status)) {
2419                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2420                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2421                         ret = -ETIMEDOUT;
2422                         goto out_release_irq;
2423                 }
2424         }
2425
2426 out:
2427         priv->is_open = 1;
2428         IWL_DEBUG_MAC80211("leave\n");
2429         return 0;
2430
2431 out_release_irq:
2432         free_irq(priv->pci_dev->irq, priv);
2433 out_disable_msi:
2434         pci_disable_msi(priv->pci_dev);
2435         pci_disable_device(priv->pci_dev);
2436         priv->is_open = 0;
2437         IWL_DEBUG_MAC80211("leave - failed\n");
2438         return ret;
2439 }
2440
2441 static void iwl_mac_stop(struct ieee80211_hw *hw)
2442 {
2443         struct iwl_priv *priv = hw->priv;
2444
2445         IWL_DEBUG_MAC80211("enter\n");
2446
2447         if (!priv->is_open) {
2448                 IWL_DEBUG_MAC80211("leave - skip\n");
2449                 return;
2450         }
2451
2452         priv->is_open = 0;
2453
2454         if (iwl_is_ready_rf(priv)) {
2455                 /* stop mac, cancel any scan request and clear
2456                  * RXON_FILTER_ASSOC_MSK BIT
2457                  */
2458                 mutex_lock(&priv->mutex);
2459                 iwl_scan_cancel_timeout(priv, 100);
2460                 mutex_unlock(&priv->mutex);
2461         }
2462
2463         iwl_down(priv);
2464
2465         flush_workqueue(priv->workqueue);
2466         free_irq(priv->pci_dev->irq, priv);
2467         pci_disable_msi(priv->pci_dev);
2468         pci_save_state(priv->pci_dev);
2469         pci_disable_device(priv->pci_dev);
2470
2471         IWL_DEBUG_MAC80211("leave\n");
2472 }
2473
2474 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2475 {
2476         struct iwl_priv *priv = hw->priv;
2477
2478         IWL_DEBUG_MACDUMP("enter\n");
2479
2480         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2481                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2482
2483         if (iwl_tx_skb(priv, skb))
2484                 dev_kfree_skb_any(skb);
2485
2486         IWL_DEBUG_MACDUMP("leave\n");
2487         return 0;
2488 }
2489
2490 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2491                                  struct ieee80211_if_init_conf *conf)
2492 {
2493         struct iwl_priv *priv = hw->priv;
2494         unsigned long flags;
2495
2496         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2497
2498         if (priv->vif) {
2499                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2500                 return -EOPNOTSUPP;
2501         }
2502
2503         spin_lock_irqsave(&priv->lock, flags);
2504         priv->vif = conf->vif;
2505         priv->iw_mode = conf->type;
2506
2507         spin_unlock_irqrestore(&priv->lock, flags);
2508
2509         mutex_lock(&priv->mutex);
2510
2511         if (conf->mac_addr) {
2512                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2513                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2514         }
2515
2516         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2517                 /* we are not ready, will run again when ready */
2518                 set_bit(STATUS_MODE_PENDING, &priv->status);
2519
2520         mutex_unlock(&priv->mutex);
2521
2522         IWL_DEBUG_MAC80211("leave\n");
2523         return 0;
2524 }
2525
2526 /**
2527  * iwl_mac_config - mac80211 config callback
2528  *
2529  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2530  * be set inappropriately and the driver currently sets the hardware up to
2531  * use it whenever needed.
2532  */
2533 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2534 {
2535         struct iwl_priv *priv = hw->priv;
2536         const struct iwl_channel_info *ch_info;
2537         struct ieee80211_conf *conf = &hw->conf;
2538         unsigned long flags;
2539         int ret = 0;
2540         u16 channel;
2541
2542         mutex_lock(&priv->mutex);
2543         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2544
2545         priv->current_ht_config.is_ht = conf->ht.enabled;
2546
2547         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2548                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2549                 goto out;
2550         }
2551
2552         if (!conf->radio_enabled)
2553                 iwl_radio_kill_sw_disable_radio(priv);
2554
2555         if (!iwl_is_ready(priv)) {
2556                 IWL_DEBUG_MAC80211("leave - not ready\n");
2557                 ret = -EIO;
2558                 goto out;
2559         }
2560
2561         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2562                      test_bit(STATUS_SCANNING, &priv->status))) {
2563                 IWL_DEBUG_MAC80211("leave - scanning\n");
2564                 mutex_unlock(&priv->mutex);
2565                 return 0;
2566         }
2567
2568         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2569         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2570         if (!is_channel_valid(ch_info)) {
2571                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2572                 ret = -EINVAL;
2573                 goto out;
2574         }
2575
2576         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2577             !is_channel_ibss(ch_info)) {
2578                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2579                         conf->channel->hw_value, conf->channel->band);
2580                 ret = -EINVAL;
2581                 goto out;
2582         }
2583
2584         spin_lock_irqsave(&priv->lock, flags);
2585
2586
2587         /* if we are switching from ht to 2.4 clear flags
2588          * from any ht related info since 2.4 does not
2589          * support ht */
2590         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2591 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2592             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2593 #endif
2594         )
2595                 priv->staging_rxon.flags = 0;
2596
2597         iwl_set_rxon_channel(priv, conf->channel);
2598
2599         iwl_set_flags_for_band(priv, conf->channel->band);
2600
2601         /* The list of supported rates and rate mask can be different
2602          * for each band; since the band may have changed, reset
2603          * the rate mask to what mac80211 lists */
2604         iwl_set_rate(priv);
2605
2606         spin_unlock_irqrestore(&priv->lock, flags);
2607
2608 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2609         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2610                 iwl_hw_channel_switch(priv, conf->channel);
2611                 goto out;
2612         }
2613 #endif
2614
2615         if (!conf->radio_enabled) {
2616                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2617                 goto out;
2618         }
2619
2620         if (iwl_is_rfkill(priv)) {
2621                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2622                 ret = -EIO;
2623                 goto out;
2624         }
2625
2626         if (conf->flags & IEEE80211_CONF_PS)
2627                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2628         else
2629                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2630         if (ret)
2631                 IWL_DEBUG_MAC80211("Error setting power level\n");
2632
2633         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2634                            priv->tx_power_user_lmt, conf->power_level);
2635
2636         iwl_set_tx_power(priv, conf->power_level, false);
2637
2638         iwl_set_rate(priv);
2639
2640         if (memcmp(&priv->active_rxon,
2641                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2642                 iwl_commit_rxon(priv);
2643         else
2644                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2645
2646         IWL_DEBUG_MAC80211("leave\n");
2647
2648 out:
2649         mutex_unlock(&priv->mutex);
2650         return ret;
2651 }
2652
2653 static void iwl_config_ap(struct iwl_priv *priv)
2654 {
2655         int ret = 0;
2656         unsigned long flags;
2657
2658         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2659                 return;
2660
2661         /* The following should be done only at AP bring up */
2662         if (!iwl_is_associated(priv)) {
2663
2664                 /* RXON - unassoc (to set timing command) */
2665                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2666                 iwl_commit_rxon(priv);
2667
2668                 /* RXON Timing */
2669                 iwl_setup_rxon_timing(priv);
2670                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2671                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2672                 if (ret)
2673                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2674                                         "Attempting to continue.\n");
2675
2676                 iwl_set_rxon_chain(priv);
2677
2678                 /* FIXME: what should be the assoc_id for AP? */
2679                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2680                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2681                         priv->staging_rxon.flags |=
2682                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2683                 else
2684                         priv->staging_rxon.flags &=
2685                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2686
2687                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2688                         if (priv->assoc_capability &
2689                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2690                                 priv->staging_rxon.flags |=
2691                                         RXON_FLG_SHORT_SLOT_MSK;
2692                         else
2693                                 priv->staging_rxon.flags &=
2694                                         ~RXON_FLG_SHORT_SLOT_MSK;
2695
2696                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2697                                 priv->staging_rxon.flags &=
2698                                         ~RXON_FLG_SHORT_SLOT_MSK;
2699                 }
2700                 /* restore RXON assoc */
2701                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2702                 iwl_commit_rxon(priv);
2703                 spin_lock_irqsave(&priv->lock, flags);
2704                 iwl_activate_qos(priv, 1);
2705                 spin_unlock_irqrestore(&priv->lock, flags);
2706                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2707         }
2708         iwl_send_beacon_cmd(priv);
2709
2710         /* FIXME - we need to add code here to detect a totally new
2711          * configuration, reset the AP, unassoc, rxon timing, assoc,
2712          * clear sta table, add BCAST sta... */
2713 }
2714
2715
2716 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2717                                         struct ieee80211_vif *vif,
2718                                     struct ieee80211_if_conf *conf)
2719 {
2720         struct iwl_priv *priv = hw->priv;
2721         int rc;
2722
2723         if (conf == NULL)
2724                 return -EIO;
2725
2726         if (priv->vif != vif) {
2727                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2728                 return 0;
2729         }
2730
2731         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2732             conf->changed & IEEE80211_IFCC_BEACON) {
2733                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2734                 if (!beacon)
2735                         return -ENOMEM;
2736                 mutex_lock(&priv->mutex);
2737                 rc = iwl_mac_beacon_update(hw, beacon);
2738                 mutex_unlock(&priv->mutex);
2739                 if (rc)
2740                         return rc;
2741         }
2742
2743         if (!iwl_is_alive(priv))
2744                 return -EAGAIN;
2745
2746         mutex_lock(&priv->mutex);
2747
2748         if (conf->bssid)
2749                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2750
2751 /*
2752  * very dubious code was here; the probe filtering flag is never set:
2753  *
2754         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2755             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2756  */
2757
2758         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2759                 if (!conf->bssid) {
2760                         conf->bssid = priv->mac_addr;
2761                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2762                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2763                                            conf->bssid);
2764                 }
2765                 if (priv->ibss_beacon)
2766                         dev_kfree_skb(priv->ibss_beacon);
2767
2768                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2769         }
2770
2771         if (iwl_is_rfkill(priv))
2772                 goto done;
2773
2774         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2775             !is_multicast_ether_addr(conf->bssid)) {
2776                 /* If there is currently a HW scan going on in the background
2777                  * then we need to cancel it else the RXON below will fail. */
2778                 if (iwl_scan_cancel_timeout(priv, 100)) {
2779                         IWL_WARNING("Aborted scan still in progress "
2780                                     "after 100ms\n");
2781                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2782                         mutex_unlock(&priv->mutex);
2783                         return -EAGAIN;
2784                 }
2785                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2786
2787                 /* TODO: Audit driver for usage of these members and see
2788                  * if mac80211 deprecates them (priv->bssid looks like it
2789                  * shouldn't be there, but I haven't scanned the IBSS code
2790                  * to verify) - jpk */
2791                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2792
2793                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2794                         iwl_config_ap(priv);
2795                 else {
2796                         rc = iwl_commit_rxon(priv);
2797                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2798                                 iwl_rxon_add_station(
2799                                         priv, priv->active_rxon.bssid_addr, 1);
2800                 }
2801
2802         } else {
2803                 iwl_scan_cancel_timeout(priv, 100);
2804                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2805                 iwl_commit_rxon(priv);
2806         }
2807
2808  done:
2809         IWL_DEBUG_MAC80211("leave\n");
2810         mutex_unlock(&priv->mutex);
2811
2812         return 0;
2813 }
2814
2815 static void iwl_configure_filter(struct ieee80211_hw *hw,
2816                                  unsigned int changed_flags,
2817                                  unsigned int *total_flags,
2818                                  int mc_count, struct dev_addr_list *mc_list)
2819 {
2820         struct iwl_priv *priv = hw->priv;
2821         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2822
2823         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2824                         changed_flags, *total_flags);
2825
2826         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2827                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2828                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2829                 else
2830                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2831         }
2832         if (changed_flags & FIF_ALLMULTI) {
2833                 if (*total_flags & FIF_ALLMULTI)
2834                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2835                 else
2836                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2837         }
2838         if (changed_flags & FIF_CONTROL) {
2839                 if (*total_flags & FIF_CONTROL)
2840                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2841                 else
2842                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2843         }
2844         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2845                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2846                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2847                 else
2848                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2849         }
2850
2851         /* We avoid iwl_commit_rxon here to commit the new filter flags
2852          * since mac80211 will call ieee80211_hw_config immediately.
2853          * (mc_list is not supported at this time). Otherwise, we need to
2854          * queue a background iwl_commit_rxon work.
2855          */
2856
2857         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2858                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2859 }
2860
2861 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2862                                      struct ieee80211_if_init_conf *conf)
2863 {
2864         struct iwl_priv *priv = hw->priv;
2865
2866         IWL_DEBUG_MAC80211("enter\n");
2867
2868         mutex_lock(&priv->mutex);
2869
2870         if (iwl_is_ready_rf(priv)) {
2871                 iwl_scan_cancel_timeout(priv, 100);
2872                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2873                 iwl_commit_rxon(priv);
2874         }
2875         if (priv->vif == conf->vif) {
2876                 priv->vif = NULL;
2877                 memset(priv->bssid, 0, ETH_ALEN);
2878         }
2879         mutex_unlock(&priv->mutex);
2880
2881         IWL_DEBUG_MAC80211("leave\n");
2882
2883 }
2884
2885 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2886 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2887                                      struct ieee80211_vif *vif,
2888                                      struct ieee80211_bss_conf *bss_conf,
2889                                      u32 changes)
2890 {
2891         struct iwl_priv *priv = hw->priv;
2892
2893         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2894
2895         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2896                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2897                                    bss_conf->use_short_preamble);
2898                 if (bss_conf->use_short_preamble)
2899                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2900                 else
2901                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2902         }
2903
2904         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2905                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2906                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2907                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2908                 else
2909                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2910         }
2911
2912         if (changes & BSS_CHANGED_HT) {
2913                 iwl_ht_conf(priv, bss_conf);
2914                 iwl_set_rxon_chain(priv);
2915         }
2916
2917         if (changes & BSS_CHANGED_ASSOC) {
2918                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2919                 /* This should never happen as this function should
2920                  * never be called from interrupt context. */
2921                 if (WARN_ON_ONCE(in_interrupt()))
2922                         return;
2923                 if (bss_conf->assoc) {
2924                         priv->assoc_id = bss_conf->aid;
2925                         priv->beacon_int = bss_conf->beacon_int;
2926                         priv->power_data.dtim_period = bss_conf->dtim_period;
2927                         priv->timestamp = bss_conf->timestamp;
2928                         priv->assoc_capability = bss_conf->assoc_capability;
2929
2930                         /* we have just associated, don't start scan too early
2931                          * leave time for EAPOL exchange to complete
2932                          */
2933                         priv->next_scan_jiffies = jiffies +
2934                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2935                         mutex_lock(&priv->mutex);
2936                         iwl_post_associate(priv);
2937                         mutex_unlock(&priv->mutex);
2938                 } else {
2939                         priv->assoc_id = 0;
2940                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2941                 }
2942         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2943                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2944                         iwl_send_rxon_assoc(priv);
2945         }
2946
2947 }
2948
2949 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2950 {
2951         unsigned long flags;
2952         struct iwl_priv *priv = hw->priv;
2953         int ret;
2954
2955         IWL_DEBUG_MAC80211("enter\n");
2956
2957         mutex_lock(&priv->mutex);
2958         spin_lock_irqsave(&priv->lock, flags);
2959
2960         if (!iwl_is_ready_rf(priv)) {
2961                 ret = -EIO;
2962                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2963                 goto out_unlock;
2964         }
2965
2966         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
2967                 ret = -EIO;
2968                 IWL_ERROR("ERROR: APs don't scan\n");
2969                 goto out_unlock;
2970         }
2971
2972         /* We don't schedule scan within next_scan_jiffies period.
2973          * Avoid scanning during possible EAPOL exchange, return
2974          * success immediately.
2975          */
2976         if (priv->next_scan_jiffies &&
2977             time_after(priv->next_scan_jiffies, jiffies)) {
2978                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2979                 queue_work(priv->workqueue, &priv->scan_completed);
2980                 ret = 0;
2981                 goto out_unlock;
2982         }
2983
2984         /* if we just finished scan ask for delay */
2985         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2986             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2987                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2988                 queue_work(priv->workqueue, &priv->scan_completed);
2989                 ret = 0;
2990                 goto out_unlock;
2991         }
2992
2993         if (ssid_len) {
2994                 priv->one_direct_scan = 1;
2995                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2996                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2997         } else {
2998                 priv->one_direct_scan = 0;
2999         }
3000
3001         ret = iwl_scan_initiate(priv);
3002
3003         IWL_DEBUG_MAC80211("leave\n");
3004
3005 out_unlock:
3006         spin_unlock_irqrestore(&priv->lock, flags);
3007         mutex_unlock(&priv->mutex);
3008
3009         return ret;
3010 }
3011
3012 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3013                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3014                         u32 iv32, u16 *phase1key)
3015 {
3016
3017         struct iwl_priv *priv = hw->priv;
3018         IWL_DEBUG_MAC80211("enter\n");
3019
3020         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3021
3022         IWL_DEBUG_MAC80211("leave\n");
3023 }
3024
3025 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3026                            const u8 *local_addr, const u8 *addr,
3027                            struct ieee80211_key_conf *key)
3028 {
3029         struct iwl_priv *priv = hw->priv;
3030         int ret = 0;
3031         u8 sta_id = IWL_INVALID_STATION;
3032         u8 is_default_wep_key = 0;
3033
3034         IWL_DEBUG_MAC80211("enter\n");
3035
3036         if (priv->hw_params.sw_crypto) {
3037                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3038                 return -EOPNOTSUPP;
3039         }
3040
3041         if (is_zero_ether_addr(addr))
3042                 /* only support pairwise keys */
3043                 return -EOPNOTSUPP;
3044
3045         sta_id = iwl_find_station(priv, addr);
3046         if (sta_id == IWL_INVALID_STATION) {
3047                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3048                                    addr);
3049                 return -EINVAL;
3050
3051         }
3052
3053         mutex_lock(&priv->mutex);
3054         iwl_scan_cancel_timeout(priv, 100);
3055         mutex_unlock(&priv->mutex);
3056
3057         /* If we are getting WEP group key and we didn't receive any key mapping
3058          * so far, we are in legacy wep mode (group key only), otherwise we are
3059          * in 1X mode.
3060          * In legacy wep mode, we use another host command to the uCode */
3061         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3062                 priv->iw_mode != NL80211_IFTYPE_AP) {
3063                 if (cmd == SET_KEY)
3064                         is_default_wep_key = !priv->key_mapping_key;
3065                 else
3066                         is_default_wep_key =
3067                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3068         }
3069
3070         switch (cmd) {
3071         case SET_KEY:
3072                 if (is_default_wep_key)
3073                         ret = iwl_set_default_wep_key(priv, key);
3074                 else
3075                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3076
3077                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3078                 break;
3079         case DISABLE_KEY:
3080                 if (is_default_wep_key)
3081                         ret = iwl_remove_default_wep_key(priv, key);
3082                 else
3083                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3084
3085                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3086                 break;
3087         default:
3088                 ret = -EINVAL;
3089         }
3090
3091         IWL_DEBUG_MAC80211("leave\n");
3092
3093         return ret;
3094 }
3095
3096 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3097                            const struct ieee80211_tx_queue_params *params)
3098 {
3099         struct iwl_priv *priv = hw->priv;
3100         unsigned long flags;
3101         int q;
3102
3103         IWL_DEBUG_MAC80211("enter\n");
3104
3105         if (!iwl_is_ready_rf(priv)) {
3106                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3107                 return -EIO;
3108         }
3109
3110         if (queue >= AC_NUM) {
3111                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3112                 return 0;
3113         }
3114
3115         if (!priv->qos_data.qos_enable) {
3116                 priv->qos_data.qos_active = 0;
3117                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3118                 return 0;
3119         }
3120         q = AC_NUM - 1 - queue;
3121
3122         spin_lock_irqsave(&priv->lock, flags);
3123
3124         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3125         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3126         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3127         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3128                         cpu_to_le16((params->txop * 32));
3129
3130         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3131         priv->qos_data.qos_active = 1;
3132
3133         if (priv->iw_mode == NL80211_IFTYPE_AP)
3134                 iwl_activate_qos(priv, 1);
3135         else if (priv->assoc_id && iwl_is_associated(priv))
3136                 iwl_activate_qos(priv, 0);
3137
3138         spin_unlock_irqrestore(&priv->lock, flags);
3139
3140         IWL_DEBUG_MAC80211("leave\n");
3141         return 0;
3142 }
3143
3144 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3145                              enum ieee80211_ampdu_mlme_action action,
3146                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3147 {
3148         struct iwl_priv *priv = hw->priv;
3149
3150         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3151                      sta->addr, tid);
3152
3153         if (!(priv->cfg->sku & IWL_SKU_N))
3154                 return -EACCES;
3155
3156         switch (action) {
3157         case IEEE80211_AMPDU_RX_START:
3158                 IWL_DEBUG_HT("start Rx\n");
3159                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3160         case IEEE80211_AMPDU_RX_STOP:
3161                 IWL_DEBUG_HT("stop Rx\n");
3162                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3163         case IEEE80211_AMPDU_TX_START:
3164                 IWL_DEBUG_HT("start Tx\n");
3165                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3166         case IEEE80211_AMPDU_TX_STOP:
3167                 IWL_DEBUG_HT("stop Tx\n");
3168                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3169         default:
3170                 IWL_DEBUG_HT("unknown\n");
3171                 return -EINVAL;
3172                 break;
3173         }
3174         return 0;
3175 }
3176
3177 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3178                                 struct ieee80211_tx_queue_stats *stats)
3179 {
3180         struct iwl_priv *priv = hw->priv;
3181         int i, avail;
3182         struct iwl_tx_queue *txq;
3183         struct iwl_queue *q;
3184         unsigned long flags;
3185
3186         IWL_DEBUG_MAC80211("enter\n");
3187
3188         if (!iwl_is_ready_rf(priv)) {
3189                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3190                 return -EIO;
3191         }
3192
3193         spin_lock_irqsave(&priv->lock, flags);
3194
3195         for (i = 0; i < AC_NUM; i++) {
3196                 txq = &priv->txq[i];
3197                 q = &txq->q;
3198                 avail = iwl_queue_space(q);
3199
3200                 stats[i].len = q->n_window - avail;
3201                 stats[i].limit = q->n_window - q->high_mark;
3202                 stats[i].count = q->n_window;
3203
3204         }
3205         spin_unlock_irqrestore(&priv->lock, flags);
3206
3207         IWL_DEBUG_MAC80211("leave\n");
3208
3209         return 0;
3210 }
3211
3212 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3213                              struct ieee80211_low_level_stats *stats)
3214 {
3215         struct iwl_priv *priv = hw->priv;
3216
3217         priv = hw->priv;
3218         IWL_DEBUG_MAC80211("enter\n");
3219         IWL_DEBUG_MAC80211("leave\n");
3220
3221         return 0;
3222 }
3223
3224 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3225 {
3226         struct iwl_priv *priv = hw->priv;
3227         unsigned long flags;
3228
3229         mutex_lock(&priv->mutex);
3230         IWL_DEBUG_MAC80211("enter\n");
3231
3232         spin_lock_irqsave(&priv->lock, flags);
3233         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3234         spin_unlock_irqrestore(&priv->lock, flags);
3235
3236         iwl_reset_qos(priv);
3237
3238         spin_lock_irqsave(&priv->lock, flags);
3239         priv->assoc_id = 0;
3240         priv->assoc_capability = 0;
3241         priv->assoc_station_added = 0;
3242
3243         /* new association get rid of ibss beacon skb */
3244         if (priv->ibss_beacon)
3245                 dev_kfree_skb(priv->ibss_beacon);
3246
3247         priv->ibss_beacon = NULL;
3248
3249         priv->beacon_int = priv->hw->conf.beacon_int;
3250         priv->timestamp = 0;
3251         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3252                 priv->beacon_int = 0;
3253
3254         spin_unlock_irqrestore(&priv->lock, flags);
3255
3256         if (!iwl_is_ready_rf(priv)) {
3257                 IWL_DEBUG_MAC80211("leave - not ready\n");
3258                 mutex_unlock(&priv->mutex);
3259                 return;
3260         }
3261
3262         /* we are restarting association process
3263          * clear RXON_FILTER_ASSOC_MSK bit
3264          */
3265         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3266                 iwl_scan_cancel_timeout(priv, 100);
3267                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3268                 iwl_commit_rxon(priv);
3269         }
3270
3271         iwl_power_update_mode(priv, 0);
3272
3273         /* Per mac80211.h: This is only used in IBSS mode... */
3274         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3275
3276                 /* switch to CAM during association period.
3277                  * the ucode will block any association/authentication
3278                  * frome during assiciation period if it can not hear
3279                  * the AP because of PM. the timer enable PM back is
3280                  * association do not complete
3281                  */
3282                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3283                                                      IEEE80211_CHAN_RADAR))
3284                                 iwl_power_disable_management(priv, 3000);
3285
3286                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3287                 mutex_unlock(&priv->mutex);
3288                 return;
3289         }
3290
3291         iwl_set_rate(priv);
3292
3293         mutex_unlock(&priv->mutex);
3294
3295         IWL_DEBUG_MAC80211("leave\n");
3296 }
3297
3298 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3299 {
3300         struct iwl_priv *priv = hw->priv;
3301         unsigned long flags;
3302         __le64 timestamp;
3303
3304         IWL_DEBUG_MAC80211("enter\n");
3305
3306         if (!iwl_is_ready_rf(priv)) {
3307                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3308                 return -EIO;
3309         }
3310
3311         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3312                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3313                 return -EIO;
3314         }
3315
3316         spin_lock_irqsave(&priv->lock, flags);
3317
3318         if (priv->ibss_beacon)
3319                 dev_kfree_skb(priv->ibss_beacon);
3320
3321         priv->ibss_beacon = skb;
3322
3323         priv->assoc_id = 0;
3324         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3325         priv->timestamp = le64_to_cpu(timestamp);
3326
3327         IWL_DEBUG_MAC80211("leave\n");
3328         spin_unlock_irqrestore(&priv->lock, flags);
3329
3330         iwl_reset_qos(priv);
3331
3332         iwl_post_associate(priv);
3333
3334
3335         return 0;
3336 }
3337
3338 /*****************************************************************************
3339  *
3340  * sysfs attributes
3341  *
3342  *****************************************************************************/
3343
3344 #ifdef CONFIG_IWLWIFI_DEBUG
3345
3346 /*
3347  * The following adds a new attribute to the sysfs representation
3348  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3349  * used for controlling the debug level.
3350  *
3351  * See the level definitions in iwl for details.
3352  */
3353
3354 static ssize_t show_debug_level(struct device *d,
3355                                 struct device_attribute *attr, char *buf)
3356 {
3357         struct iwl_priv *priv = d->driver_data;
3358
3359         return sprintf(buf, "0x%08X\n", priv->debug_level);
3360 }
3361 static ssize_t store_debug_level(struct device *d,
3362                                 struct device_attribute *attr,
3363                                  const char *buf, size_t count)
3364 {
3365         struct iwl_priv *priv = d->driver_data;
3366         unsigned long val;
3367         int ret;
3368
3369         ret = strict_strtoul(buf, 0, &val);
3370         if (ret)
3371                 printk(KERN_INFO DRV_NAME
3372                        ": %s is not in hex or decimal form.\n", buf);
3373         else
3374                 priv->debug_level = val;
3375
3376         return strnlen(buf, count);
3377 }
3378
3379 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3380                         show_debug_level, store_debug_level);
3381
3382
3383 #endif /* CONFIG_IWLWIFI_DEBUG */
3384
3385
3386 static ssize_t show_version(struct device *d,
3387                                 struct device_attribute *attr, char *buf)
3388 {
3389         struct iwl_priv *priv = d->driver_data;
3390         struct iwl_alive_resp *palive = &priv->card_alive;
3391         ssize_t pos = 0;
3392         u16 eeprom_ver;
3393
3394         if (palive->is_valid)
3395                 pos += sprintf(buf + pos,
3396                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3397                                 "fw type: 0x%01X 0x%01X\n",
3398                                 palive->ucode_major, palive->ucode_minor,
3399                                 palive->sw_rev[0], palive->sw_rev[1],
3400                                 palive->ver_type, palive->ver_subtype);
3401         else
3402                 pos += sprintf(buf + pos, "fw not loaded\n");
3403
3404         if (priv->eeprom) {
3405                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3406                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3407                                  eeprom_ver);
3408         } else {
3409                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3410         }
3411
3412         return pos;
3413 }
3414
3415 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3416
3417 static ssize_t show_temperature(struct device *d,
3418                                 struct device_attribute *attr, char *buf)
3419 {
3420         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3421
3422         if (!iwl_is_alive(priv))
3423                 return -EAGAIN;
3424
3425         return sprintf(buf, "%d\n", priv->temperature);
3426 }
3427
3428 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3429
3430 static ssize_t show_tx_power(struct device *d,
3431                              struct device_attribute *attr, char *buf)
3432 {
3433         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3434         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3435 }
3436
3437 static ssize_t store_tx_power(struct device *d,
3438                               struct device_attribute *attr,
3439                               const char *buf, size_t count)
3440 {
3441         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3442         unsigned long val;
3443         int ret;
3444
3445         ret = strict_strtoul(buf, 10, &val);
3446         if (ret)
3447                 printk(KERN_INFO DRV_NAME
3448                        ": %s is not in decimal form.\n", buf);
3449         else
3450                 iwl_set_tx_power(priv, val, false);
3451
3452         return count;
3453 }
3454
3455 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3456
3457 static ssize_t show_flags(struct device *d,
3458                           struct device_attribute *attr, char *buf)
3459 {
3460         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3461
3462         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3463 }
3464
3465 static ssize_t store_flags(struct device *d,
3466                            struct device_attribute *attr,
3467                            const char *buf, size_t count)
3468 {
3469         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3470         unsigned long val;
3471         u32 flags;
3472         int ret = strict_strtoul(buf, 0, &val);
3473         if (ret)
3474                 return ret;
3475         flags = (u32)val;
3476
3477         mutex_lock(&priv->mutex);
3478         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3479                 /* Cancel any currently running scans... */
3480                 if (iwl_scan_cancel_timeout(priv, 100))
3481                         IWL_WARNING("Could not cancel scan.\n");
3482                 else {
3483                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3484                         priv->staging_rxon.flags = cpu_to_le32(flags);
3485                         iwl_commit_rxon(priv);
3486                 }
3487         }
3488         mutex_unlock(&priv->mutex);
3489
3490         return count;
3491 }
3492
3493 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3494
3495 static ssize_t show_filter_flags(struct device *d,
3496                                  struct device_attribute *attr, char *buf)
3497 {
3498         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3499
3500         return sprintf(buf, "0x%04X\n",
3501                 le32_to_cpu(priv->active_rxon.filter_flags));
3502 }
3503
3504 static ssize_t store_filter_flags(struct device *d,
3505                                   struct device_attribute *attr,
3506                                   const char *buf, size_t count)
3507 {
3508         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3509         unsigned long val;
3510         u32 filter_flags;
3511         int ret = strict_strtoul(buf, 0, &val);
3512         if (ret)
3513                 return ret;
3514         filter_flags = (u32)val;
3515
3516         mutex_lock(&priv->mutex);
3517         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3518                 /* Cancel any currently running scans... */
3519                 if (iwl_scan_cancel_timeout(priv, 100))
3520                         IWL_WARNING("Could not cancel scan.\n");
3521                 else {
3522                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3523                                        "0x%04X\n", filter_flags);
3524                         priv->staging_rxon.filter_flags =
3525                                 cpu_to_le32(filter_flags);
3526                         iwl_commit_rxon(priv);
3527                 }
3528         }
3529         mutex_unlock(&priv->mutex);
3530
3531         return count;
3532 }
3533
3534 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3535                    store_filter_flags);
3536
3537 static ssize_t store_retry_rate(struct device *d,
3538                                 struct device_attribute *attr,
3539                                 const char *buf, size_t count)
3540 {
3541         struct iwl_priv *priv = dev_get_drvdata(d);
3542         long val;
3543         int ret  = strict_strtol(buf, 10, &val);
3544         if (!ret)
3545                 return ret;
3546
3547         priv->retry_rate = (val > 0) ? val : 1;
3548
3549         return count;
3550 }
3551
3552 static ssize_t show_retry_rate(struct device *d,
3553                                struct device_attribute *attr, char *buf)
3554 {
3555         struct iwl_priv *priv = dev_get_drvdata(d);
3556         return sprintf(buf, "%d", priv->retry_rate);
3557 }
3558
3559 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3560                    store_retry_rate);
3561
3562 static ssize_t store_power_level(struct device *d,
3563                                  struct device_attribute *attr,
3564                                  const char *buf, size_t count)
3565 {
3566         struct iwl_priv *priv = dev_get_drvdata(d);
3567         int ret;
3568         unsigned long mode;
3569
3570
3571         mutex_lock(&priv->mutex);
3572
3573         if (!iwl_is_ready(priv)) {
3574                 ret = -EAGAIN;
3575                 goto out;
3576         }
3577
3578         ret = strict_strtoul(buf, 10, &mode);
3579         if (ret)
3580                 goto out;
3581
3582         ret = iwl_power_set_user_mode(priv, mode);
3583         if (ret) {
3584                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3585                 goto out;
3586         }
3587         ret = count;
3588
3589  out:
3590         mutex_unlock(&priv->mutex);
3591         return ret;
3592 }
3593
3594 static ssize_t show_power_level(struct device *d,
3595                                 struct device_attribute *attr, char *buf)
3596 {
3597         struct iwl_priv *priv = dev_get_drvdata(d);
3598         int mode = priv->power_data.user_power_setting;
3599         int system = priv->power_data.system_power_setting;
3600         int level = priv->power_data.power_mode;
3601         char *p = buf;
3602
3603         switch (system) {
3604         case IWL_POWER_SYS_AUTO:
3605                 p += sprintf(p, "SYSTEM:auto");
3606                 break;
3607         case IWL_POWER_SYS_AC:
3608                 p += sprintf(p, "SYSTEM:ac");
3609                 break;
3610         case IWL_POWER_SYS_BATTERY:
3611                 p += sprintf(p, "SYSTEM:battery");
3612                 break;
3613         }
3614
3615         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3616                         "fixed" : "auto");
3617         p += sprintf(p, "\tINDEX:%d", level);
3618         p += sprintf(p, "\n");
3619         return p - buf + 1;
3620 }
3621
3622 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3623                    store_power_level);
3624
3625
3626 static ssize_t show_statistics(struct device *d,
3627                                struct device_attribute *attr, char *buf)
3628 {
3629         struct iwl_priv *priv = dev_get_drvdata(d);
3630         u32 size = sizeof(struct iwl_notif_statistics);
3631         u32 len = 0, ofs = 0;
3632         u8 *data = (u8 *)&priv->statistics;
3633         int rc = 0;
3634
3635         if (!iwl_is_alive(priv))
3636                 return -EAGAIN;
3637
3638         mutex_lock(&priv->mutex);
3639         rc = iwl_send_statistics_request(priv, 0);
3640         mutex_unlock(&priv->mutex);
3641
3642         if (rc) {
3643                 len = sprintf(buf,
3644                               "Error sending statistics request: 0x%08X\n", rc);
3645                 return len;
3646         }
3647
3648         while (size && (PAGE_SIZE - len)) {
3649                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3650                                    PAGE_SIZE - len, 1);
3651                 len = strlen(buf);
3652                 if (PAGE_SIZE - len)
3653                         buf[len++] = '\n';
3654
3655                 ofs += 16;
3656                 size -= min(size, 16U);
3657         }
3658
3659         return len;
3660 }
3661
3662 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3663
3664 static ssize_t show_status(struct device *d,
3665                            struct device_attribute *attr, char *buf)
3666 {
3667         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3668         if (!iwl_is_alive(priv))
3669                 return -EAGAIN;
3670         return sprintf(buf, "0x%08x\n", (int)priv->status);
3671 }
3672
3673 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3674
3675 /*****************************************************************************
3676  *
3677  * driver setup and teardown
3678  *
3679  *****************************************************************************/
3680
3681 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3682 {
3683         priv->workqueue = create_workqueue(DRV_NAME);
3684
3685         init_waitqueue_head(&priv->wait_command_queue);
3686
3687         INIT_WORK(&priv->up, iwl_bg_up);
3688         INIT_WORK(&priv->restart, iwl_bg_restart);
3689         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3690         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3691         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3692         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3693         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3694         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3695
3696         iwl_setup_scan_deferred_work(priv);
3697         iwl_setup_power_deferred_work(priv);
3698
3699         if (priv->cfg->ops->lib->setup_deferred_work)
3700                 priv->cfg->ops->lib->setup_deferred_work(priv);
3701
3702         init_timer(&priv->statistics_periodic);
3703         priv->statistics_periodic.data = (unsigned long)priv;
3704         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3705
3706         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3707                      iwl_irq_tasklet, (unsigned long)priv);
3708 }
3709
3710 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3711 {
3712         if (priv->cfg->ops->lib->cancel_deferred_work)
3713                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3714
3715         cancel_delayed_work_sync(&priv->init_alive_start);
3716         cancel_delayed_work(&priv->scan_check);
3717         cancel_delayed_work_sync(&priv->set_power_save);
3718         cancel_delayed_work(&priv->alive_start);
3719         cancel_work_sync(&priv->beacon_update);
3720         del_timer_sync(&priv->statistics_periodic);
3721 }
3722
3723 static struct attribute *iwl_sysfs_entries[] = {
3724         &dev_attr_flags.attr,
3725         &dev_attr_filter_flags.attr,
3726         &dev_attr_power_level.attr,
3727         &dev_attr_retry_rate.attr,
3728         &dev_attr_statistics.attr,
3729         &dev_attr_status.attr,
3730         &dev_attr_temperature.attr,
3731         &dev_attr_tx_power.attr,
3732 #ifdef CONFIG_IWLWIFI_DEBUG
3733         &dev_attr_debug_level.attr,
3734 #endif
3735         &dev_attr_version.attr,
3736
3737         NULL
3738 };
3739
3740 static struct attribute_group iwl_attribute_group = {
3741         .name = NULL,           /* put in device directory */
3742         .attrs = iwl_sysfs_entries,
3743 };
3744
3745 static struct ieee80211_ops iwl_hw_ops = {
3746         .tx = iwl_mac_tx,
3747         .start = iwl_mac_start,
3748         .stop = iwl_mac_stop,
3749         .add_interface = iwl_mac_add_interface,
3750         .remove_interface = iwl_mac_remove_interface,
3751         .config = iwl_mac_config,
3752         .config_interface = iwl_mac_config_interface,
3753         .configure_filter = iwl_configure_filter,
3754         .set_key = iwl_mac_set_key,
3755         .update_tkip_key = iwl_mac_update_tkip_key,
3756         .get_stats = iwl_mac_get_stats,
3757         .get_tx_stats = iwl_mac_get_tx_stats,
3758         .conf_tx = iwl_mac_conf_tx,
3759         .reset_tsf = iwl_mac_reset_tsf,
3760         .bss_info_changed = iwl_bss_info_changed,
3761         .ampdu_action = iwl_mac_ampdu_action,
3762         .hw_scan = iwl_mac_hw_scan
3763 };
3764
3765 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3766 {
3767         int err = 0;
3768         struct iwl_priv *priv;
3769         struct ieee80211_hw *hw;
3770         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3771         unsigned long flags;
3772
3773         /************************
3774          * 1. Allocating HW data
3775          ************************/
3776
3777         /* Disabling hardware scan means that mac80211 will perform scans
3778          * "the hard way", rather than using device's scan. */
3779         if (cfg->mod_params->disable_hw_scan) {
3780                 if (cfg->mod_params->debug & IWL_DL_INFO)
3781                         dev_printk(KERN_DEBUG, &(pdev->dev),
3782                                    "Disabling hw_scan\n");
3783                 iwl_hw_ops.hw_scan = NULL;
3784         }
3785
3786         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3787         if (!hw) {
3788                 err = -ENOMEM;
3789                 goto out;
3790         }
3791         priv = hw->priv;
3792         /* At this point both hw and priv are allocated. */
3793
3794         SET_IEEE80211_DEV(hw, &pdev->dev);
3795
3796         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3797         priv->cfg = cfg;
3798         priv->pci_dev = pdev;
3799
3800 #ifdef CONFIG_IWLWIFI_DEBUG
3801         priv->debug_level = priv->cfg->mod_params->debug;
3802         atomic_set(&priv->restrict_refcnt, 0);
3803 #endif
3804
3805         /**************************
3806          * 2. Initializing PCI bus
3807          **************************/
3808         if (pci_enable_device(pdev)) {
3809                 err = -ENODEV;
3810                 goto out_ieee80211_free_hw;
3811         }
3812
3813         pci_set_master(pdev);
3814
3815         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3816         if (!err)
3817                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3818         if (err) {
3819                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3820                 if (!err)
3821                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3822                 /* both attempts failed: */
3823                 if (err) {
3824                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3825                                 DRV_NAME);
3826                         goto out_pci_disable_device;
3827                 }
3828         }
3829
3830         err = pci_request_regions(pdev, DRV_NAME);
3831         if (err)
3832                 goto out_pci_disable_device;
3833
3834         pci_set_drvdata(pdev, priv);
3835
3836
3837         /***********************
3838          * 3. Read REV register
3839          ***********************/
3840         priv->hw_base = pci_iomap(pdev, 0, 0);
3841         if (!priv->hw_base) {
3842                 err = -ENODEV;
3843                 goto out_pci_release_regions;
3844         }
3845
3846         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3847                 (unsigned long long) pci_resource_len(pdev, 0));
3848         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3849
3850         iwl_hw_detect(priv);
3851         printk(KERN_INFO DRV_NAME
3852                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3853                 priv->cfg->name, priv->hw_rev);
3854
3855         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3856          * PCI Tx retries from interfering with C3 CPU state */
3857         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3858
3859         /* amp init */
3860         err = priv->cfg->ops->lib->apm_ops.init(priv);
3861         if (err < 0) {
3862                 IWL_DEBUG_INFO("Failed to init APMG\n");
3863                 goto out_iounmap;
3864         }
3865         /*****************
3866          * 4. Read EEPROM
3867          *****************/
3868         /* Read the EEPROM */
3869         err = iwl_eeprom_init(priv);
3870         if (err) {
3871                 IWL_ERROR("Unable to init EEPROM\n");
3872                 goto out_iounmap;
3873         }
3874         err = iwl_eeprom_check_version(priv);
3875         if (err)
3876                 goto out_iounmap;
3877
3878         /* extract MAC Address */
3879         iwl_eeprom_get_mac(priv, priv->mac_addr);
3880         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3881         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3882
3883         /************************
3884          * 5. Setup HW constants
3885          ************************/
3886         if (iwl_set_hw_params(priv)) {
3887                 IWL_ERROR("failed to set hw parameters\n");
3888                 goto out_free_eeprom;
3889         }
3890
3891         /*******************
3892          * 6. Setup priv
3893          *******************/
3894
3895         err = iwl_init_drv(priv);
3896         if (err)
3897                 goto out_free_eeprom;
3898         /* At this point both hw and priv are initialized. */
3899
3900         /**********************************
3901          * 7. Initialize module parameters
3902          **********************************/
3903
3904         /* Disable radio (SW RF KILL) via parameter when loading driver */
3905         if (priv->cfg->mod_params->disable) {
3906                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3907                 IWL_DEBUG_INFO("Radio disabled.\n");
3908         }
3909
3910         /********************
3911          * 8. Setup services
3912          ********************/
3913         spin_lock_irqsave(&priv->lock, flags);
3914         iwl_disable_interrupts(priv);
3915         spin_unlock_irqrestore(&priv->lock, flags);
3916
3917         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3918         if (err) {
3919                 IWL_ERROR("failed to create sysfs device attributes\n");
3920                 goto out_uninit_drv;
3921         }
3922
3923
3924         iwl_setup_deferred_work(priv);
3925         iwl_setup_rx_handlers(priv);
3926
3927         /********************
3928          * 9. Conclude
3929          ********************/
3930         pci_save_state(pdev);
3931         pci_disable_device(pdev);
3932
3933         /**********************************
3934          * 10. Setup and register mac80211
3935          **********************************/
3936
3937         err = iwl_setup_mac(priv);
3938         if (err)
3939                 goto out_remove_sysfs;
3940
3941         err = iwl_dbgfs_register(priv, DRV_NAME);
3942         if (err)
3943                 IWL_ERROR("failed to create debugfs files\n");
3944
3945         err = iwl_rfkill_init(priv);
3946         if (err)
3947                 IWL_ERROR("Unable to initialize RFKILL system. "
3948                                   "Ignoring error: %d\n", err);
3949         iwl_power_initialize(priv);
3950         return 0;
3951
3952  out_remove_sysfs:
3953         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3954  out_uninit_drv:
3955         iwl_uninit_drv(priv);
3956  out_free_eeprom:
3957         iwl_eeprom_free(priv);
3958  out_iounmap:
3959         pci_iounmap(pdev, priv->hw_base);
3960  out_pci_release_regions:
3961         pci_release_regions(pdev);
3962         pci_set_drvdata(pdev, NULL);
3963  out_pci_disable_device:
3964         pci_disable_device(pdev);
3965  out_ieee80211_free_hw:
3966         ieee80211_free_hw(priv->hw);
3967  out:
3968         return err;
3969 }
3970
3971 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3972 {
3973         struct iwl_priv *priv = pci_get_drvdata(pdev);
3974         unsigned long flags;
3975
3976         if (!priv)
3977                 return;
3978
3979         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3980
3981         iwl_dbgfs_unregister(priv);
3982         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3983
3984         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3985          * to be called and iwl_down since we are removing the device
3986          * we need to set STATUS_EXIT_PENDING bit.
3987          */
3988         set_bit(STATUS_EXIT_PENDING, &priv->status);
3989         if (priv->mac80211_registered) {
3990                 ieee80211_unregister_hw(priv->hw);
3991                 priv->mac80211_registered = 0;
3992         } else {
3993                 iwl_down(priv);
3994         }
3995
3996         /* make sure we flush any pending irq or
3997          * tasklet for the driver
3998          */
3999         spin_lock_irqsave(&priv->lock, flags);
4000         iwl_disable_interrupts(priv);
4001         spin_unlock_irqrestore(&priv->lock, flags);
4002
4003         iwl_synchronize_irq(priv);
4004
4005         iwl_rfkill_unregister(priv);
4006         iwl_dealloc_ucode_pci(priv);
4007
4008         if (priv->rxq.bd)
4009                 iwl_rx_queue_free(priv, &priv->rxq);
4010         iwl_hw_txq_ctx_free(priv);
4011
4012         iwl_clear_stations_table(priv);
4013         iwl_eeprom_free(priv);
4014
4015
4016         /*netif_stop_queue(dev); */
4017         flush_workqueue(priv->workqueue);
4018
4019         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4020          * priv->workqueue... so we can't take down the workqueue
4021          * until now... */
4022         destroy_workqueue(priv->workqueue);
4023         priv->workqueue = NULL;
4024
4025         pci_iounmap(pdev, priv->hw_base);
4026         pci_release_regions(pdev);
4027         pci_disable_device(pdev);
4028         pci_set_drvdata(pdev, NULL);
4029
4030         iwl_uninit_drv(priv);
4031
4032         if (priv->ibss_beacon)
4033                 dev_kfree_skb(priv->ibss_beacon);
4034
4035         ieee80211_free_hw(priv->hw);
4036 }
4037
4038 #ifdef CONFIG_PM
4039
4040 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4041 {
4042         struct iwl_priv *priv = pci_get_drvdata(pdev);
4043
4044         if (priv->is_open) {
4045                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4046                 iwl_mac_stop(priv->hw);
4047                 priv->is_open = 1;
4048         }
4049
4050         pci_set_power_state(pdev, PCI_D3hot);
4051
4052         return 0;
4053 }
4054
4055 static int iwl_pci_resume(struct pci_dev *pdev)
4056 {
4057         struct iwl_priv *priv = pci_get_drvdata(pdev);
4058
4059         pci_set_power_state(pdev, PCI_D0);
4060
4061         if (priv->is_open)
4062                 iwl_mac_start(priv->hw);
4063
4064         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4065         return 0;
4066 }
4067
4068 #endif /* CONFIG_PM */
4069
4070 /*****************************************************************************
4071  *
4072  * driver and module entry point
4073  *
4074  *****************************************************************************/
4075
4076 /* Hardware specific file defines the PCI IDs table for that hardware module */
4077 static struct pci_device_id iwl_hw_card_ids[] = {
4078 #ifdef CONFIG_IWL4965
4079         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4080         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4081 #endif /* CONFIG_IWL4965 */
4082 #ifdef CONFIG_IWL5000
4083         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4084         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4085         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4086         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4087         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4088         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4089         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4090         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4091         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4092         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4093 /* 5350 WiFi/WiMax */
4094         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4095         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4096         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4097 /* 5150 Wifi/WiMax */
4098         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4099         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4100 #endif /* CONFIG_IWL5000 */
4101
4102         {0}
4103 };
4104 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4105
4106 static struct pci_driver iwl_driver = {
4107         .name = DRV_NAME,
4108         .id_table = iwl_hw_card_ids,
4109         .probe = iwl_pci_probe,
4110         .remove = __devexit_p(iwl_pci_remove),
4111 #ifdef CONFIG_PM
4112         .suspend = iwl_pci_suspend,
4113         .resume = iwl_pci_resume,
4114 #endif
4115 };
4116
4117 static int __init iwl_init(void)
4118 {
4119
4120         int ret;
4121         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4122         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4123
4124         ret = iwlagn_rate_control_register();
4125         if (ret) {
4126                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4127                 return ret;
4128         }
4129
4130         ret = pci_register_driver(&iwl_driver);
4131         if (ret) {
4132                 IWL_ERROR("Unable to initialize PCI module\n");
4133                 goto error_register;
4134         }
4135
4136         return ret;
4137
4138 error_register:
4139         iwlagn_rate_control_unregister();
4140         return ret;
4141 }
4142
4143 static void __exit iwl_exit(void)
4144 {
4145         pci_unregister_driver(&iwl_driver);
4146         iwlagn_rate_control_unregister();
4147 }
4148
4149 module_exit(iwl_exit);
4150 module_init(iwl_init);