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;
1574         const struct firmware *ucode_raw;
1575         const char *name = priv->cfg->fw_name;
1576         u8 *src;
1577         size_t len;
1578         u32 inst_size, data_size, init_size, init_data_size, boot_size;
1579
1580         /* Ask kernel firmware_class module to get the boot firmware off disk.
1581          * request_firmware() is synchronous, file is in memory on return. */
1582         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1583         if (ret < 0) {
1584                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1585                                         name, ret);
1586                 goto error;
1587         }
1588
1589         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1590                        name, ucode_raw->size);
1591
1592         /* Make sure that we got at least our header! */
1593         if (ucode_raw->size < sizeof(*ucode)) {
1594                 IWL_ERROR("File size way too small!\n");
1595                 ret = -EINVAL;
1596                 goto err_release;
1597         }
1598
1599         /* Data from ucode file:  header followed by uCode images */
1600         ucode = (void *)ucode_raw->data;
1601
1602         priv->ucode_ver = le32_to_cpu(ucode->ver);
1603         inst_size = le32_to_cpu(ucode->inst_size);
1604         data_size = le32_to_cpu(ucode->data_size);
1605         init_size = le32_to_cpu(ucode->init_size);
1606         init_data_size = le32_to_cpu(ucode->init_data_size);
1607         boot_size = le32_to_cpu(ucode->boot_size);
1608
1609         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1610                        priv->ucode_ver);
1611         IWL_DEBUG_INFO("f/w package hdr ucode version = %u.%u.%u.%u\n",
1612                        IWL_UCODE_MAJOR(priv->ucode_ver),
1613                        IWL_UCODE_MINOR(priv->ucode_ver),
1614                        IWL_UCODE_API(priv->ucode_ver),
1615                        IWL_UCODE_SERIAL(priv->ucode_ver));
1616         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1617                        inst_size);
1618         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1619                        data_size);
1620         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1621                        init_size);
1622         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1623                        init_data_size);
1624         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1625                        boot_size);
1626
1627         /* Verify size of file vs. image size info in file's header */
1628         if (ucode_raw->size < sizeof(*ucode) +
1629                 inst_size + data_size + init_size +
1630                 init_data_size + boot_size) {
1631
1632                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1633                                (int)ucode_raw->size);
1634                 ret = -EINVAL;
1635                 goto err_release;
1636         }
1637
1638         /* Verify that uCode images will fit in card's SRAM */
1639         if (inst_size > priv->hw_params.max_inst_size) {
1640                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1641                                inst_size);
1642                 ret = -EINVAL;
1643                 goto err_release;
1644         }
1645
1646         if (data_size > priv->hw_params.max_data_size) {
1647                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1648                                 data_size);
1649                 ret = -EINVAL;
1650                 goto err_release;
1651         }
1652         if (init_size > priv->hw_params.max_inst_size) {
1653                 IWL_DEBUG_INFO
1654                     ("uCode init instr len %d too large to fit in\n",
1655                       init_size);
1656                 ret = -EINVAL;
1657                 goto err_release;
1658         }
1659         if (init_data_size > priv->hw_params.max_data_size) {
1660                 IWL_DEBUG_INFO
1661                     ("uCode init data len %d too large to fit in\n",
1662                       init_data_size);
1663                 ret = -EINVAL;
1664                 goto err_release;
1665         }
1666         if (boot_size > priv->hw_params.max_bsm_size) {
1667                 IWL_DEBUG_INFO
1668                     ("uCode boot instr len %d too large to fit in\n",
1669                       boot_size);
1670                 ret = -EINVAL;
1671                 goto err_release;
1672         }
1673
1674         /* Allocate ucode buffers for card's bus-master loading ... */
1675
1676         /* Runtime instructions and 2 copies of data:
1677          * 1) unmodified from disk
1678          * 2) backup cache for save/restore during power-downs */
1679         priv->ucode_code.len = inst_size;
1680         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1681
1682         priv->ucode_data.len = data_size;
1683         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1684
1685         priv->ucode_data_backup.len = data_size;
1686         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1687
1688         /* Initialization instructions and data */
1689         if (init_size && init_data_size) {
1690                 priv->ucode_init.len = init_size;
1691                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1692
1693                 priv->ucode_init_data.len = init_data_size;
1694                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1695
1696                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1697                         goto err_pci_alloc;
1698         }
1699
1700         /* Bootstrap (instructions only, no data) */
1701         if (boot_size) {
1702                 priv->ucode_boot.len = boot_size;
1703                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1704
1705                 if (!priv->ucode_boot.v_addr)
1706                         goto err_pci_alloc;
1707         }
1708
1709         /* Copy images into buffers for card's bus-master reads ... */
1710
1711         /* Runtime instructions (first block of data in file) */
1712         src = &ucode->data[0];
1713         len = priv->ucode_code.len;
1714         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1715         memcpy(priv->ucode_code.v_addr, src, len);
1716         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1717                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1718
1719         /* Runtime data (2nd block)
1720          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1721         src = &ucode->data[inst_size];
1722         len = priv->ucode_data.len;
1723         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1724         memcpy(priv->ucode_data.v_addr, src, len);
1725         memcpy(priv->ucode_data_backup.v_addr, src, len);
1726
1727         /* Initialization instructions (3rd block) */
1728         if (init_size) {
1729                 src = &ucode->data[inst_size + data_size];
1730                 len = priv->ucode_init.len;
1731                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1732                                 len);
1733                 memcpy(priv->ucode_init.v_addr, src, len);
1734         }
1735
1736         /* Initialization data (4th block) */
1737         if (init_data_size) {
1738                 src = &ucode->data[inst_size + data_size + init_size];
1739                 len = priv->ucode_init_data.len;
1740                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1741                                len);
1742                 memcpy(priv->ucode_init_data.v_addr, src, len);
1743         }
1744
1745         /* Bootstrap instructions (5th block) */
1746         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1747         len = priv->ucode_boot.len;
1748         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1749         memcpy(priv->ucode_boot.v_addr, src, len);
1750
1751         /* We have our copies now, allow OS release its copies */
1752         release_firmware(ucode_raw);
1753         return 0;
1754
1755  err_pci_alloc:
1756         IWL_ERROR("failed to allocate pci memory\n");
1757         ret = -ENOMEM;
1758         iwl_dealloc_ucode_pci(priv);
1759
1760  err_release:
1761         release_firmware(ucode_raw);
1762
1763  error:
1764         return ret;
1765 }
1766
1767 /* temporary */
1768 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1769                                  struct sk_buff *skb);
1770
1771 /**
1772  * iwl_alive_start - called after REPLY_ALIVE notification received
1773  *                   from protocol/runtime uCode (initialization uCode's
1774  *                   Alive gets handled by iwl_init_alive_start()).
1775  */
1776 static void iwl_alive_start(struct iwl_priv *priv)
1777 {
1778         int ret = 0;
1779
1780         IWL_DEBUG_INFO("Runtime Alive received.\n");
1781
1782         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1783                 /* We had an error bringing up the hardware, so take it
1784                  * all the way back down so we can try again */
1785                 IWL_DEBUG_INFO("Alive failed.\n");
1786                 goto restart;
1787         }
1788
1789         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1790          * This is a paranoid check, because we would not have gotten the
1791          * "runtime" alive if code weren't properly loaded.  */
1792         if (iwl_verify_ucode(priv)) {
1793                 /* Runtime instruction load was bad;
1794                  * take it all the way back down so we can try again */
1795                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1796                 goto restart;
1797         }
1798
1799         iwl_clear_stations_table(priv);
1800         ret = priv->cfg->ops->lib->alive_notify(priv);
1801         if (ret) {
1802                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1803                             ret);
1804                 goto restart;
1805         }
1806
1807         /* After the ALIVE response, we can send host commands to the uCode */
1808         set_bit(STATUS_ALIVE, &priv->status);
1809
1810         if (iwl_is_rfkill(priv))
1811                 return;
1812
1813         ieee80211_wake_queues(priv->hw);
1814
1815         priv->active_rate = priv->rates_mask;
1816         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1817
1818         if (iwl_is_associated(priv)) {
1819                 struct iwl_rxon_cmd *active_rxon =
1820                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1821
1822                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1823                        sizeof(priv->staging_rxon));
1824                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1825         } else {
1826                 /* Initialize our rx_config data */
1827                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1828                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1829         }
1830
1831         /* Configure Bluetooth device coexistence support */
1832         iwl_send_bt_config(priv);
1833
1834         iwl_reset_run_time_calib(priv);
1835
1836         /* Configure the adapter for unassociated operation */
1837         iwl_commit_rxon(priv);
1838
1839         /* At this point, the NIC is initialized and operational */
1840         iwl_rf_kill_ct_config(priv);
1841
1842         iwl_leds_register(priv);
1843
1844         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1845         set_bit(STATUS_READY, &priv->status);
1846         wake_up_interruptible(&priv->wait_command_queue);
1847
1848         if (priv->error_recovering)
1849                 iwl_error_recovery(priv);
1850
1851         iwl_power_update_mode(priv, 1);
1852
1853         /* reassociate for ADHOC mode */
1854         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1855                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1856                                                                 priv->vif);
1857                 if (beacon)
1858                         iwl_mac_beacon_update(priv->hw, beacon);
1859         }
1860
1861
1862         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1863                 iwl_set_mode(priv, priv->iw_mode);
1864
1865         return;
1866
1867  restart:
1868         queue_work(priv->workqueue, &priv->restart);
1869 }
1870
1871 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1872
1873 static void __iwl_down(struct iwl_priv *priv)
1874 {
1875         unsigned long flags;
1876         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1877
1878         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1879
1880         if (!exit_pending)
1881                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1882
1883         iwl_leds_unregister(priv);
1884
1885         iwl_clear_stations_table(priv);
1886
1887         /* Unblock any waiting calls */
1888         wake_up_interruptible_all(&priv->wait_command_queue);
1889
1890         /* Wipe out the EXIT_PENDING status bit if we are not actually
1891          * exiting the module */
1892         if (!exit_pending)
1893                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1894
1895         /* stop and reset the on-board processor */
1896         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1897
1898         /* tell the device to stop sending interrupts */
1899         spin_lock_irqsave(&priv->lock, flags);
1900         iwl_disable_interrupts(priv);
1901         spin_unlock_irqrestore(&priv->lock, flags);
1902         iwl_synchronize_irq(priv);
1903
1904         if (priv->mac80211_registered)
1905                 ieee80211_stop_queues(priv->hw);
1906
1907         /* If we have not previously called iwl_init() then
1908          * clear all bits but the RF Kill and SUSPEND bits and return */
1909         if (!iwl_is_init(priv)) {
1910                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1911                                         STATUS_RF_KILL_HW |
1912                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1913                                         STATUS_RF_KILL_SW |
1914                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1915                                         STATUS_GEO_CONFIGURED |
1916                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1917                                         STATUS_IN_SUSPEND |
1918                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1919                                         STATUS_EXIT_PENDING;
1920                 goto exit;
1921         }
1922
1923         /* ...otherwise clear out all the status bits but the RF Kill and
1924          * SUSPEND bits and continue taking the NIC down. */
1925         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1926                                 STATUS_RF_KILL_HW |
1927                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1928                                 STATUS_RF_KILL_SW |
1929                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1930                                 STATUS_GEO_CONFIGURED |
1931                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1932                                 STATUS_IN_SUSPEND |
1933                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1934                                 STATUS_FW_ERROR |
1935                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1936                                 STATUS_EXIT_PENDING;
1937
1938         spin_lock_irqsave(&priv->lock, flags);
1939         iwl_clear_bit(priv, CSR_GP_CNTRL,
1940                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1941         spin_unlock_irqrestore(&priv->lock, flags);
1942
1943         iwl_txq_ctx_stop(priv);
1944         iwl_rxq_stop(priv);
1945
1946         spin_lock_irqsave(&priv->lock, flags);
1947         if (!iwl_grab_nic_access(priv)) {
1948                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1949                                          APMG_CLK_VAL_DMA_CLK_RQT);
1950                 iwl_release_nic_access(priv);
1951         }
1952         spin_unlock_irqrestore(&priv->lock, flags);
1953
1954         udelay(5);
1955
1956         /* FIXME: apm_ops.suspend(priv) */
1957         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1958                 priv->cfg->ops->lib->apm_ops.stop(priv);
1959         else
1960                 priv->cfg->ops->lib->apm_ops.reset(priv);
1961  exit:
1962         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1963
1964         if (priv->ibss_beacon)
1965                 dev_kfree_skb(priv->ibss_beacon);
1966         priv->ibss_beacon = NULL;
1967
1968         /* clear out any free frames */
1969         iwl_clear_free_frames(priv);
1970 }
1971
1972 static void iwl_down(struct iwl_priv *priv)
1973 {
1974         mutex_lock(&priv->mutex);
1975         __iwl_down(priv);
1976         mutex_unlock(&priv->mutex);
1977
1978         iwl_cancel_deferred_work(priv);
1979 }
1980
1981 #define MAX_HW_RESTARTS 5
1982
1983 static int __iwl_up(struct iwl_priv *priv)
1984 {
1985         int i;
1986         int ret;
1987
1988         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1989                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
1990                 return -EIO;
1991         }
1992
1993         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
1994                 IWL_ERROR("ucode not available for device bringup\n");
1995                 return -EIO;
1996         }
1997
1998         /* If platform's RF_KILL switch is NOT set to KILL */
1999         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2000                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2001         else
2002                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2003
2004         if (iwl_is_rfkill(priv)) {
2005                 iwl_enable_interrupts(priv);
2006                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2007                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2008                 return 0;
2009         }
2010
2011         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2012
2013         ret = iwl_hw_nic_init(priv);
2014         if (ret) {
2015                 IWL_ERROR("Unable to init nic\n");
2016                 return ret;
2017         }
2018
2019         /* make sure rfkill handshake bits are cleared */
2020         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2021         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2022                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2023
2024         /* clear (again), then enable host interrupts */
2025         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2026         iwl_enable_interrupts(priv);
2027
2028         /* really make sure rfkill handshake bits are cleared */
2029         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2030         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2031
2032         /* Copy original ucode data image from disk into backup cache.
2033          * This will be used to initialize the on-board processor's
2034          * data SRAM for a clean start when the runtime program first loads. */
2035         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2036                priv->ucode_data.len);
2037
2038         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2039
2040                 iwl_clear_stations_table(priv);
2041
2042                 /* load bootstrap state machine,
2043                  * load bootstrap program into processor's memory,
2044                  * prepare to load the "initialize" uCode */
2045                 ret = priv->cfg->ops->lib->load_ucode(priv);
2046
2047                 if (ret) {
2048                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2049                         continue;
2050                 }
2051
2052                 /* Clear out the uCode error bit if it is set */
2053                 clear_bit(STATUS_FW_ERROR, &priv->status);
2054
2055                 /* start card; "initialize" will load runtime ucode */
2056                 iwl_nic_start(priv);
2057
2058                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2059
2060                 return 0;
2061         }
2062
2063         set_bit(STATUS_EXIT_PENDING, &priv->status);
2064         __iwl_down(priv);
2065         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067         /* tried to restart and config the device for as long as our
2068          * patience could withstand */
2069         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2070         return -EIO;
2071 }
2072
2073
2074 /*****************************************************************************
2075  *
2076  * Workqueue callbacks
2077  *
2078  *****************************************************************************/
2079
2080 static void iwl_bg_init_alive_start(struct work_struct *data)
2081 {
2082         struct iwl_priv *priv =
2083             container_of(data, struct iwl_priv, init_alive_start.work);
2084
2085         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2086                 return;
2087
2088         mutex_lock(&priv->mutex);
2089         priv->cfg->ops->lib->init_alive_start(priv);
2090         mutex_unlock(&priv->mutex);
2091 }
2092
2093 static void iwl_bg_alive_start(struct work_struct *data)
2094 {
2095         struct iwl_priv *priv =
2096             container_of(data, struct iwl_priv, alive_start.work);
2097
2098         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2099                 return;
2100
2101         mutex_lock(&priv->mutex);
2102         iwl_alive_start(priv);
2103         mutex_unlock(&priv->mutex);
2104 }
2105
2106 static void iwl_bg_rf_kill(struct work_struct *work)
2107 {
2108         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2109
2110         wake_up_interruptible(&priv->wait_command_queue);
2111
2112         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2113                 return;
2114
2115         mutex_lock(&priv->mutex);
2116
2117         if (!iwl_is_rfkill(priv)) {
2118                 IWL_DEBUG(IWL_DL_RF_KILL,
2119                           "HW and/or SW RF Kill no longer active, restarting "
2120                           "device\n");
2121                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2122                         queue_work(priv->workqueue, &priv->restart);
2123         } else {
2124                 /* make sure mac80211 stop sending Tx frame */
2125                 if (priv->mac80211_registered)
2126                         ieee80211_stop_queues(priv->hw);
2127
2128                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2129                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2130                                           "disabled by SW switch\n");
2131                 else
2132                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2133                                     "Kill switch must be turned off for "
2134                                     "wireless networking to work.\n");
2135         }
2136         mutex_unlock(&priv->mutex);
2137         iwl_rfkill_set_hw_state(priv);
2138 }
2139
2140 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2141 {
2142         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2143                         run_time_calib_work);
2144
2145         mutex_lock(&priv->mutex);
2146
2147         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2148             test_bit(STATUS_SCANNING, &priv->status)) {
2149                 mutex_unlock(&priv->mutex);
2150                 return;
2151         }
2152
2153         if (priv->start_calib) {
2154                 iwl_chain_noise_calibration(priv, &priv->statistics);
2155
2156                 iwl_sensitivity_calibration(priv, &priv->statistics);
2157         }
2158
2159         mutex_unlock(&priv->mutex);
2160         return;
2161 }
2162
2163 static void iwl_bg_up(struct work_struct *data)
2164 {
2165         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2166
2167         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2168                 return;
2169
2170         mutex_lock(&priv->mutex);
2171         __iwl_up(priv);
2172         mutex_unlock(&priv->mutex);
2173         iwl_rfkill_set_hw_state(priv);
2174 }
2175
2176 static void iwl_bg_restart(struct work_struct *data)
2177 {
2178         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2179
2180         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2181                 return;
2182
2183         iwl_down(priv);
2184         queue_work(priv->workqueue, &priv->up);
2185 }
2186
2187 static void iwl_bg_rx_replenish(struct work_struct *data)
2188 {
2189         struct iwl_priv *priv =
2190             container_of(data, struct iwl_priv, rx_replenish);
2191
2192         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2193                 return;
2194
2195         mutex_lock(&priv->mutex);
2196         iwl_rx_replenish(priv);
2197         mutex_unlock(&priv->mutex);
2198 }
2199
2200 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2201
2202 static void iwl_post_associate(struct iwl_priv *priv)
2203 {
2204         struct ieee80211_conf *conf = NULL;
2205         int ret = 0;
2206         unsigned long flags;
2207
2208         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2209                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2210                 return;
2211         }
2212
2213         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2214                         priv->assoc_id, priv->active_rxon.bssid_addr);
2215
2216
2217         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2218                 return;
2219
2220
2221         if (!priv->vif || !priv->is_open)
2222                 return;
2223
2224         iwl_power_cancel_timeout(priv);
2225         iwl_scan_cancel_timeout(priv, 200);
2226
2227         conf = ieee80211_get_hw_conf(priv->hw);
2228
2229         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2230         iwl_commit_rxon(priv);
2231
2232         iwl_setup_rxon_timing(priv);
2233         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2234                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2235         if (ret)
2236                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2237                             "Attempting to continue.\n");
2238
2239         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2240
2241         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2242
2243         iwl_set_rxon_chain(priv);
2244         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2245
2246         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2247                         priv->assoc_id, priv->beacon_int);
2248
2249         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2250                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2251         else
2252                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2253
2254         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2255                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2256                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2257                 else
2258                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2259
2260                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2261                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2262
2263         }
2264
2265         iwl_commit_rxon(priv);
2266
2267         switch (priv->iw_mode) {
2268         case NL80211_IFTYPE_STATION:
2269                 break;
2270
2271         case NL80211_IFTYPE_ADHOC:
2272
2273                 /* assume default assoc id */
2274                 priv->assoc_id = 1;
2275
2276                 iwl_rxon_add_station(priv, priv->bssid, 0);
2277                 iwl_send_beacon_cmd(priv);
2278
2279                 break;
2280
2281         default:
2282                 IWL_ERROR("%s Should not be called in %d mode\n",
2283                           __func__, priv->iw_mode);
2284                 break;
2285         }
2286
2287         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2288                 priv->assoc_station_added = 1;
2289
2290         spin_lock_irqsave(&priv->lock, flags);
2291         iwl_activate_qos(priv, 0);
2292         spin_unlock_irqrestore(&priv->lock, flags);
2293
2294         /* the chain noise calibration will enabled PM upon completion
2295          * If chain noise has already been run, then we need to enable
2296          * power management here */
2297         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2298                 iwl_power_enable_management(priv);
2299
2300         /* Enable Rx differential gain and sensitivity calibrations */
2301         iwl_chain_noise_reset(priv);
2302         priv->start_calib = 1;
2303
2304 }
2305
2306 /*****************************************************************************
2307  *
2308  * mac80211 entry point functions
2309  *
2310  *****************************************************************************/
2311
2312 #define UCODE_READY_TIMEOUT     (4 * HZ)
2313
2314 static int iwl_mac_start(struct ieee80211_hw *hw)
2315 {
2316         struct iwl_priv *priv = hw->priv;
2317         int ret;
2318         u16 pci_cmd;
2319
2320         IWL_DEBUG_MAC80211("enter\n");
2321
2322         if (pci_enable_device(priv->pci_dev)) {
2323                 IWL_ERROR("Fail to pci_enable_device\n");
2324                 return -ENODEV;
2325         }
2326         pci_restore_state(priv->pci_dev);
2327         pci_enable_msi(priv->pci_dev);
2328
2329         /* enable interrupts if needed: hw bug w/a */
2330         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2331         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2332                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2333                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2334         }
2335
2336         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2337                           DRV_NAME, priv);
2338         if (ret) {
2339                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2340                 goto out_disable_msi;
2341         }
2342
2343         /* we should be verifying the device is ready to be opened */
2344         mutex_lock(&priv->mutex);
2345
2346         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2347         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2348          * ucode filename and max sizes are card-specific. */
2349
2350         if (!priv->ucode_code.len) {
2351                 ret = iwl_read_ucode(priv);
2352                 if (ret) {
2353                         IWL_ERROR("Could not read microcode: %d\n", ret);
2354                         mutex_unlock(&priv->mutex);
2355                         goto out_release_irq;
2356                 }
2357         }
2358
2359         ret = __iwl_up(priv);
2360
2361         mutex_unlock(&priv->mutex);
2362
2363         iwl_rfkill_set_hw_state(priv);
2364
2365         if (ret)
2366                 goto out_release_irq;
2367
2368         if (iwl_is_rfkill(priv))
2369                 goto out;
2370
2371         IWL_DEBUG_INFO("Start UP work done.\n");
2372
2373         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2374                 return 0;
2375
2376         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2377          * mac80211 will not be run successfully. */
2378         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2379                         test_bit(STATUS_READY, &priv->status),
2380                         UCODE_READY_TIMEOUT);
2381         if (!ret) {
2382                 if (!test_bit(STATUS_READY, &priv->status)) {
2383                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2384                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2385                         ret = -ETIMEDOUT;
2386                         goto out_release_irq;
2387                 }
2388         }
2389
2390 out:
2391         priv->is_open = 1;
2392         IWL_DEBUG_MAC80211("leave\n");
2393         return 0;
2394
2395 out_release_irq:
2396         free_irq(priv->pci_dev->irq, priv);
2397 out_disable_msi:
2398         pci_disable_msi(priv->pci_dev);
2399         pci_disable_device(priv->pci_dev);
2400         priv->is_open = 0;
2401         IWL_DEBUG_MAC80211("leave - failed\n");
2402         return ret;
2403 }
2404
2405 static void iwl_mac_stop(struct ieee80211_hw *hw)
2406 {
2407         struct iwl_priv *priv = hw->priv;
2408
2409         IWL_DEBUG_MAC80211("enter\n");
2410
2411         if (!priv->is_open) {
2412                 IWL_DEBUG_MAC80211("leave - skip\n");
2413                 return;
2414         }
2415
2416         priv->is_open = 0;
2417
2418         if (iwl_is_ready_rf(priv)) {
2419                 /* stop mac, cancel any scan request and clear
2420                  * RXON_FILTER_ASSOC_MSK BIT
2421                  */
2422                 mutex_lock(&priv->mutex);
2423                 iwl_scan_cancel_timeout(priv, 100);
2424                 mutex_unlock(&priv->mutex);
2425         }
2426
2427         iwl_down(priv);
2428
2429         flush_workqueue(priv->workqueue);
2430         free_irq(priv->pci_dev->irq, priv);
2431         pci_disable_msi(priv->pci_dev);
2432         pci_save_state(priv->pci_dev);
2433         pci_disable_device(priv->pci_dev);
2434
2435         IWL_DEBUG_MAC80211("leave\n");
2436 }
2437
2438 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2439 {
2440         struct iwl_priv *priv = hw->priv;
2441
2442         IWL_DEBUG_MACDUMP("enter\n");
2443
2444         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2445                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2446
2447         if (iwl_tx_skb(priv, skb))
2448                 dev_kfree_skb_any(skb);
2449
2450         IWL_DEBUG_MACDUMP("leave\n");
2451         return 0;
2452 }
2453
2454 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2455                                  struct ieee80211_if_init_conf *conf)
2456 {
2457         struct iwl_priv *priv = hw->priv;
2458         unsigned long flags;
2459
2460         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2461
2462         if (priv->vif) {
2463                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2464                 return -EOPNOTSUPP;
2465         }
2466
2467         spin_lock_irqsave(&priv->lock, flags);
2468         priv->vif = conf->vif;
2469         priv->iw_mode = conf->type;
2470
2471         spin_unlock_irqrestore(&priv->lock, flags);
2472
2473         mutex_lock(&priv->mutex);
2474
2475         if (conf->mac_addr) {
2476                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2477                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2478         }
2479
2480         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2481                 /* we are not ready, will run again when ready */
2482                 set_bit(STATUS_MODE_PENDING, &priv->status);
2483
2484         mutex_unlock(&priv->mutex);
2485
2486         IWL_DEBUG_MAC80211("leave\n");
2487         return 0;
2488 }
2489
2490 /**
2491  * iwl_mac_config - mac80211 config callback
2492  *
2493  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2494  * be set inappropriately and the driver currently sets the hardware up to
2495  * use it whenever needed.
2496  */
2497 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2498 {
2499         struct iwl_priv *priv = hw->priv;
2500         const struct iwl_channel_info *ch_info;
2501         struct ieee80211_conf *conf = &hw->conf;
2502         unsigned long flags;
2503         int ret = 0;
2504         u16 channel;
2505
2506         mutex_lock(&priv->mutex);
2507         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2508
2509         priv->current_ht_config.is_ht = conf->ht.enabled;
2510
2511         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2512                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2513                 goto out;
2514         }
2515
2516         if (!conf->radio_enabled)
2517                 iwl_radio_kill_sw_disable_radio(priv);
2518
2519         if (!iwl_is_ready(priv)) {
2520                 IWL_DEBUG_MAC80211("leave - not ready\n");
2521                 ret = -EIO;
2522                 goto out;
2523         }
2524
2525         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2526                      test_bit(STATUS_SCANNING, &priv->status))) {
2527                 IWL_DEBUG_MAC80211("leave - scanning\n");
2528                 mutex_unlock(&priv->mutex);
2529                 return 0;
2530         }
2531
2532         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2533         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2534         if (!is_channel_valid(ch_info)) {
2535                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2536                 ret = -EINVAL;
2537                 goto out;
2538         }
2539
2540         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2541             !is_channel_ibss(ch_info)) {
2542                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2543                         conf->channel->hw_value, conf->channel->band);
2544                 ret = -EINVAL;
2545                 goto out;
2546         }
2547
2548         spin_lock_irqsave(&priv->lock, flags);
2549
2550
2551         /* if we are switching from ht to 2.4 clear flags
2552          * from any ht related info since 2.4 does not
2553          * support ht */
2554         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2555 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2556             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2557 #endif
2558         )
2559                 priv->staging_rxon.flags = 0;
2560
2561         iwl_set_rxon_channel(priv, conf->channel);
2562
2563         iwl_set_flags_for_band(priv, conf->channel->band);
2564
2565         /* The list of supported rates and rate mask can be different
2566          * for each band; since the band may have changed, reset
2567          * the rate mask to what mac80211 lists */
2568         iwl_set_rate(priv);
2569
2570         spin_unlock_irqrestore(&priv->lock, flags);
2571
2572 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2573         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2574                 iwl_hw_channel_switch(priv, conf->channel);
2575                 goto out;
2576         }
2577 #endif
2578
2579         if (!conf->radio_enabled) {
2580                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2581                 goto out;
2582         }
2583
2584         if (iwl_is_rfkill(priv)) {
2585                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2586                 ret = -EIO;
2587                 goto out;
2588         }
2589
2590         if (conf->flags & IEEE80211_CONF_PS)
2591                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2592         else
2593                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2594         if (ret)
2595                 IWL_DEBUG_MAC80211("Error setting power level\n");
2596
2597         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2598                            priv->tx_power_user_lmt, conf->power_level);
2599
2600         iwl_set_tx_power(priv, conf->power_level, false);
2601
2602         iwl_set_rate(priv);
2603
2604         if (memcmp(&priv->active_rxon,
2605                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2606                 iwl_commit_rxon(priv);
2607         else
2608                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2609
2610         IWL_DEBUG_MAC80211("leave\n");
2611
2612 out:
2613         mutex_unlock(&priv->mutex);
2614         return ret;
2615 }
2616
2617 static void iwl_config_ap(struct iwl_priv *priv)
2618 {
2619         int ret = 0;
2620         unsigned long flags;
2621
2622         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2623                 return;
2624
2625         /* The following should be done only at AP bring up */
2626         if (!iwl_is_associated(priv)) {
2627
2628                 /* RXON - unassoc (to set timing command) */
2629                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2630                 iwl_commit_rxon(priv);
2631
2632                 /* RXON Timing */
2633                 iwl_setup_rxon_timing(priv);
2634                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2635                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2636                 if (ret)
2637                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2638                                         "Attempting to continue.\n");
2639
2640                 iwl_set_rxon_chain(priv);
2641
2642                 /* FIXME: what should be the assoc_id for AP? */
2643                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2644                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2645                         priv->staging_rxon.flags |=
2646                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2647                 else
2648                         priv->staging_rxon.flags &=
2649                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2650
2651                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2652                         if (priv->assoc_capability &
2653                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2654                                 priv->staging_rxon.flags |=
2655                                         RXON_FLG_SHORT_SLOT_MSK;
2656                         else
2657                                 priv->staging_rxon.flags &=
2658                                         ~RXON_FLG_SHORT_SLOT_MSK;
2659
2660                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2661                                 priv->staging_rxon.flags &=
2662                                         ~RXON_FLG_SHORT_SLOT_MSK;
2663                 }
2664                 /* restore RXON assoc */
2665                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2666                 iwl_commit_rxon(priv);
2667                 spin_lock_irqsave(&priv->lock, flags);
2668                 iwl_activate_qos(priv, 1);
2669                 spin_unlock_irqrestore(&priv->lock, flags);
2670                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2671         }
2672         iwl_send_beacon_cmd(priv);
2673
2674         /* FIXME - we need to add code here to detect a totally new
2675          * configuration, reset the AP, unassoc, rxon timing, assoc,
2676          * clear sta table, add BCAST sta... */
2677 }
2678
2679
2680 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2681                                         struct ieee80211_vif *vif,
2682                                     struct ieee80211_if_conf *conf)
2683 {
2684         struct iwl_priv *priv = hw->priv;
2685         int rc;
2686
2687         if (conf == NULL)
2688                 return -EIO;
2689
2690         if (priv->vif != vif) {
2691                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2692                 return 0;
2693         }
2694
2695         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2696             conf->changed & IEEE80211_IFCC_BEACON) {
2697                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2698                 if (!beacon)
2699                         return -ENOMEM;
2700                 mutex_lock(&priv->mutex);
2701                 rc = iwl_mac_beacon_update(hw, beacon);
2702                 mutex_unlock(&priv->mutex);
2703                 if (rc)
2704                         return rc;
2705         }
2706
2707         if (!iwl_is_alive(priv))
2708                 return -EAGAIN;
2709
2710         mutex_lock(&priv->mutex);
2711
2712         if (conf->bssid)
2713                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2714
2715 /*
2716  * very dubious code was here; the probe filtering flag is never set:
2717  *
2718         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2719             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2720  */
2721
2722         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2723                 if (!conf->bssid) {
2724                         conf->bssid = priv->mac_addr;
2725                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2726                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2727                                            conf->bssid);
2728                 }
2729                 if (priv->ibss_beacon)
2730                         dev_kfree_skb(priv->ibss_beacon);
2731
2732                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2733         }
2734
2735         if (iwl_is_rfkill(priv))
2736                 goto done;
2737
2738         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2739             !is_multicast_ether_addr(conf->bssid)) {
2740                 /* If there is currently a HW scan going on in the background
2741                  * then we need to cancel it else the RXON below will fail. */
2742                 if (iwl_scan_cancel_timeout(priv, 100)) {
2743                         IWL_WARNING("Aborted scan still in progress "
2744                                     "after 100ms\n");
2745                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2746                         mutex_unlock(&priv->mutex);
2747                         return -EAGAIN;
2748                 }
2749                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2750
2751                 /* TODO: Audit driver for usage of these members and see
2752                  * if mac80211 deprecates them (priv->bssid looks like it
2753                  * shouldn't be there, but I haven't scanned the IBSS code
2754                  * to verify) - jpk */
2755                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2756
2757                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2758                         iwl_config_ap(priv);
2759                 else {
2760                         rc = iwl_commit_rxon(priv);
2761                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2762                                 iwl_rxon_add_station(
2763                                         priv, priv->active_rxon.bssid_addr, 1);
2764                 }
2765
2766         } else {
2767                 iwl_scan_cancel_timeout(priv, 100);
2768                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2769                 iwl_commit_rxon(priv);
2770         }
2771
2772  done:
2773         IWL_DEBUG_MAC80211("leave\n");
2774         mutex_unlock(&priv->mutex);
2775
2776         return 0;
2777 }
2778
2779 static void iwl_configure_filter(struct ieee80211_hw *hw,
2780                                  unsigned int changed_flags,
2781                                  unsigned int *total_flags,
2782                                  int mc_count, struct dev_addr_list *mc_list)
2783 {
2784         struct iwl_priv *priv = hw->priv;
2785         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2786
2787         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2788                         changed_flags, *total_flags);
2789
2790         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2791                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2792                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2793                 else
2794                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2795         }
2796         if (changed_flags & FIF_ALLMULTI) {
2797                 if (*total_flags & FIF_ALLMULTI)
2798                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2799                 else
2800                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2801         }
2802         if (changed_flags & FIF_CONTROL) {
2803                 if (*total_flags & FIF_CONTROL)
2804                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2805                 else
2806                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2807         }
2808         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2809                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2810                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2811                 else
2812                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2813         }
2814
2815         /* We avoid iwl_commit_rxon here to commit the new filter flags
2816          * since mac80211 will call ieee80211_hw_config immediately.
2817          * (mc_list is not supported at this time). Otherwise, we need to
2818          * queue a background iwl_commit_rxon work.
2819          */
2820
2821         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2822                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2823 }
2824
2825 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2826                                      struct ieee80211_if_init_conf *conf)
2827 {
2828         struct iwl_priv *priv = hw->priv;
2829
2830         IWL_DEBUG_MAC80211("enter\n");
2831
2832         mutex_lock(&priv->mutex);
2833
2834         if (iwl_is_ready_rf(priv)) {
2835                 iwl_scan_cancel_timeout(priv, 100);
2836                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2837                 iwl_commit_rxon(priv);
2838         }
2839         if (priv->vif == conf->vif) {
2840                 priv->vif = NULL;
2841                 memset(priv->bssid, 0, ETH_ALEN);
2842         }
2843         mutex_unlock(&priv->mutex);
2844
2845         IWL_DEBUG_MAC80211("leave\n");
2846
2847 }
2848
2849 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2850 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2851                                      struct ieee80211_vif *vif,
2852                                      struct ieee80211_bss_conf *bss_conf,
2853                                      u32 changes)
2854 {
2855         struct iwl_priv *priv = hw->priv;
2856
2857         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2858
2859         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2860                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2861                                    bss_conf->use_short_preamble);
2862                 if (bss_conf->use_short_preamble)
2863                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2864                 else
2865                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2866         }
2867
2868         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2869                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2870                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2871                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2872                 else
2873                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2874         }
2875
2876         if (changes & BSS_CHANGED_HT) {
2877                 iwl_ht_conf(priv, bss_conf);
2878                 iwl_set_rxon_chain(priv);
2879         }
2880
2881         if (changes & BSS_CHANGED_ASSOC) {
2882                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2883                 /* This should never happen as this function should
2884                  * never be called from interrupt context. */
2885                 if (WARN_ON_ONCE(in_interrupt()))
2886                         return;
2887                 if (bss_conf->assoc) {
2888                         priv->assoc_id = bss_conf->aid;
2889                         priv->beacon_int = bss_conf->beacon_int;
2890                         priv->power_data.dtim_period = bss_conf->dtim_period;
2891                         priv->timestamp = bss_conf->timestamp;
2892                         priv->assoc_capability = bss_conf->assoc_capability;
2893
2894                         /* we have just associated, don't start scan too early
2895                          * leave time for EAPOL exchange to complete
2896                          */
2897                         priv->next_scan_jiffies = jiffies +
2898                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2899                         mutex_lock(&priv->mutex);
2900                         iwl_post_associate(priv);
2901                         mutex_unlock(&priv->mutex);
2902                 } else {
2903                         priv->assoc_id = 0;
2904                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2905                 }
2906         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2907                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2908                         iwl_send_rxon_assoc(priv);
2909         }
2910
2911 }
2912
2913 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2914 {
2915         unsigned long flags;
2916         struct iwl_priv *priv = hw->priv;
2917         int ret;
2918
2919         IWL_DEBUG_MAC80211("enter\n");
2920
2921         mutex_lock(&priv->mutex);
2922         spin_lock_irqsave(&priv->lock, flags);
2923
2924         if (!iwl_is_ready_rf(priv)) {
2925                 ret = -EIO;
2926                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2927                 goto out_unlock;
2928         }
2929
2930         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
2931                 ret = -EIO;
2932                 IWL_ERROR("ERROR: APs don't scan\n");
2933                 goto out_unlock;
2934         }
2935
2936         /* We don't schedule scan within next_scan_jiffies period.
2937          * Avoid scanning during possible EAPOL exchange, return
2938          * success immediately.
2939          */
2940         if (priv->next_scan_jiffies &&
2941             time_after(priv->next_scan_jiffies, jiffies)) {
2942                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2943                 queue_work(priv->workqueue, &priv->scan_completed);
2944                 ret = 0;
2945                 goto out_unlock;
2946         }
2947
2948         /* if we just finished scan ask for delay */
2949         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2950             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2951                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2952                 queue_work(priv->workqueue, &priv->scan_completed);
2953                 ret = 0;
2954                 goto out_unlock;
2955         }
2956
2957         if (ssid_len) {
2958                 priv->one_direct_scan = 1;
2959                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2960                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2961         } else {
2962                 priv->one_direct_scan = 0;
2963         }
2964
2965         ret = iwl_scan_initiate(priv);
2966
2967         IWL_DEBUG_MAC80211("leave\n");
2968
2969 out_unlock:
2970         spin_unlock_irqrestore(&priv->lock, flags);
2971         mutex_unlock(&priv->mutex);
2972
2973         return ret;
2974 }
2975
2976 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2977                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2978                         u32 iv32, u16 *phase1key)
2979 {
2980
2981         struct iwl_priv *priv = hw->priv;
2982         IWL_DEBUG_MAC80211("enter\n");
2983
2984         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
2985
2986         IWL_DEBUG_MAC80211("leave\n");
2987 }
2988
2989 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2990                            const u8 *local_addr, const u8 *addr,
2991                            struct ieee80211_key_conf *key)
2992 {
2993         struct iwl_priv *priv = hw->priv;
2994         int ret = 0;
2995         u8 sta_id = IWL_INVALID_STATION;
2996         u8 is_default_wep_key = 0;
2997
2998         IWL_DEBUG_MAC80211("enter\n");
2999
3000         if (priv->hw_params.sw_crypto) {
3001                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3002                 return -EOPNOTSUPP;
3003         }
3004
3005         if (is_zero_ether_addr(addr))
3006                 /* only support pairwise keys */
3007                 return -EOPNOTSUPP;
3008
3009         sta_id = iwl_find_station(priv, addr);
3010         if (sta_id == IWL_INVALID_STATION) {
3011                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3012                                    addr);
3013                 return -EINVAL;
3014
3015         }
3016
3017         mutex_lock(&priv->mutex);
3018         iwl_scan_cancel_timeout(priv, 100);
3019         mutex_unlock(&priv->mutex);
3020
3021         /* If we are getting WEP group key and we didn't receive any key mapping
3022          * so far, we are in legacy wep mode (group key only), otherwise we are
3023          * in 1X mode.
3024          * In legacy wep mode, we use another host command to the uCode */
3025         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3026                 priv->iw_mode != NL80211_IFTYPE_AP) {
3027                 if (cmd == SET_KEY)
3028                         is_default_wep_key = !priv->key_mapping_key;
3029                 else
3030                         is_default_wep_key =
3031                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3032         }
3033
3034         switch (cmd) {
3035         case SET_KEY:
3036                 if (is_default_wep_key)
3037                         ret = iwl_set_default_wep_key(priv, key);
3038                 else
3039                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3040
3041                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3042                 break;
3043         case DISABLE_KEY:
3044                 if (is_default_wep_key)
3045                         ret = iwl_remove_default_wep_key(priv, key);
3046                 else
3047                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3048
3049                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3050                 break;
3051         default:
3052                 ret = -EINVAL;
3053         }
3054
3055         IWL_DEBUG_MAC80211("leave\n");
3056
3057         return ret;
3058 }
3059
3060 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3061                            const struct ieee80211_tx_queue_params *params)
3062 {
3063         struct iwl_priv *priv = hw->priv;
3064         unsigned long flags;
3065         int q;
3066
3067         IWL_DEBUG_MAC80211("enter\n");
3068
3069         if (!iwl_is_ready_rf(priv)) {
3070                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3071                 return -EIO;
3072         }
3073
3074         if (queue >= AC_NUM) {
3075                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3076                 return 0;
3077         }
3078
3079         if (!priv->qos_data.qos_enable) {
3080                 priv->qos_data.qos_active = 0;
3081                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3082                 return 0;
3083         }
3084         q = AC_NUM - 1 - queue;
3085
3086         spin_lock_irqsave(&priv->lock, flags);
3087
3088         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3089         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3090         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3091         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3092                         cpu_to_le16((params->txop * 32));
3093
3094         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3095         priv->qos_data.qos_active = 1;
3096
3097         if (priv->iw_mode == NL80211_IFTYPE_AP)
3098                 iwl_activate_qos(priv, 1);
3099         else if (priv->assoc_id && iwl_is_associated(priv))
3100                 iwl_activate_qos(priv, 0);
3101
3102         spin_unlock_irqrestore(&priv->lock, flags);
3103
3104         IWL_DEBUG_MAC80211("leave\n");
3105         return 0;
3106 }
3107
3108 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3109                              enum ieee80211_ampdu_mlme_action action,
3110                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3111 {
3112         struct iwl_priv *priv = hw->priv;
3113
3114         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3115                      sta->addr, tid);
3116
3117         if (!(priv->cfg->sku & IWL_SKU_N))
3118                 return -EACCES;
3119
3120         switch (action) {
3121         case IEEE80211_AMPDU_RX_START:
3122                 IWL_DEBUG_HT("start Rx\n");
3123                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3124         case IEEE80211_AMPDU_RX_STOP:
3125                 IWL_DEBUG_HT("stop Rx\n");
3126                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3127         case IEEE80211_AMPDU_TX_START:
3128                 IWL_DEBUG_HT("start Tx\n");
3129                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3130         case IEEE80211_AMPDU_TX_STOP:
3131                 IWL_DEBUG_HT("stop Tx\n");
3132                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3133         default:
3134                 IWL_DEBUG_HT("unknown\n");
3135                 return -EINVAL;
3136                 break;
3137         }
3138         return 0;
3139 }
3140
3141 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3142                                 struct ieee80211_tx_queue_stats *stats)
3143 {
3144         struct iwl_priv *priv = hw->priv;
3145         int i, avail;
3146         struct iwl_tx_queue *txq;
3147         struct iwl_queue *q;
3148         unsigned long flags;
3149
3150         IWL_DEBUG_MAC80211("enter\n");
3151
3152         if (!iwl_is_ready_rf(priv)) {
3153                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3154                 return -EIO;
3155         }
3156
3157         spin_lock_irqsave(&priv->lock, flags);
3158
3159         for (i = 0; i < AC_NUM; i++) {
3160                 txq = &priv->txq[i];
3161                 q = &txq->q;
3162                 avail = iwl_queue_space(q);
3163
3164                 stats[i].len = q->n_window - avail;
3165                 stats[i].limit = q->n_window - q->high_mark;
3166                 stats[i].count = q->n_window;
3167
3168         }
3169         spin_unlock_irqrestore(&priv->lock, flags);
3170
3171         IWL_DEBUG_MAC80211("leave\n");
3172
3173         return 0;
3174 }
3175
3176 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3177                              struct ieee80211_low_level_stats *stats)
3178 {
3179         struct iwl_priv *priv = hw->priv;
3180
3181         priv = hw->priv;
3182         IWL_DEBUG_MAC80211("enter\n");
3183         IWL_DEBUG_MAC80211("leave\n");
3184
3185         return 0;
3186 }
3187
3188 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3189 {
3190         struct iwl_priv *priv = hw->priv;
3191         unsigned long flags;
3192
3193         mutex_lock(&priv->mutex);
3194         IWL_DEBUG_MAC80211("enter\n");
3195
3196         spin_lock_irqsave(&priv->lock, flags);
3197         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3198         spin_unlock_irqrestore(&priv->lock, flags);
3199
3200         iwl_reset_qos(priv);
3201
3202         spin_lock_irqsave(&priv->lock, flags);
3203         priv->assoc_id = 0;
3204         priv->assoc_capability = 0;
3205         priv->assoc_station_added = 0;
3206
3207         /* new association get rid of ibss beacon skb */
3208         if (priv->ibss_beacon)
3209                 dev_kfree_skb(priv->ibss_beacon);
3210
3211         priv->ibss_beacon = NULL;
3212
3213         priv->beacon_int = priv->hw->conf.beacon_int;
3214         priv->timestamp = 0;
3215         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3216                 priv->beacon_int = 0;
3217
3218         spin_unlock_irqrestore(&priv->lock, flags);
3219
3220         if (!iwl_is_ready_rf(priv)) {
3221                 IWL_DEBUG_MAC80211("leave - not ready\n");
3222                 mutex_unlock(&priv->mutex);
3223                 return;
3224         }
3225
3226         /* we are restarting association process
3227          * clear RXON_FILTER_ASSOC_MSK bit
3228          */
3229         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3230                 iwl_scan_cancel_timeout(priv, 100);
3231                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3232                 iwl_commit_rxon(priv);
3233         }
3234
3235         iwl_power_update_mode(priv, 0);
3236
3237         /* Per mac80211.h: This is only used in IBSS mode... */
3238         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3239
3240                 /* switch to CAM during association period.
3241                  * the ucode will block any association/authentication
3242                  * frome during assiciation period if it can not hear
3243                  * the AP because of PM. the timer enable PM back is
3244                  * association do not complete
3245                  */
3246                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3247                                                      IEEE80211_CHAN_RADAR))
3248                                 iwl_power_disable_management(priv, 3000);
3249
3250                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3251                 mutex_unlock(&priv->mutex);
3252                 return;
3253         }
3254
3255         iwl_set_rate(priv);
3256
3257         mutex_unlock(&priv->mutex);
3258
3259         IWL_DEBUG_MAC80211("leave\n");
3260 }
3261
3262 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3263 {
3264         struct iwl_priv *priv = hw->priv;
3265         unsigned long flags;
3266         __le64 timestamp;
3267
3268         IWL_DEBUG_MAC80211("enter\n");
3269
3270         if (!iwl_is_ready_rf(priv)) {
3271                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3272                 return -EIO;
3273         }
3274
3275         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3276                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3277                 return -EIO;
3278         }
3279
3280         spin_lock_irqsave(&priv->lock, flags);
3281
3282         if (priv->ibss_beacon)
3283                 dev_kfree_skb(priv->ibss_beacon);
3284
3285         priv->ibss_beacon = skb;
3286
3287         priv->assoc_id = 0;
3288         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3289         priv->timestamp = le64_to_cpu(timestamp);
3290
3291         IWL_DEBUG_MAC80211("leave\n");
3292         spin_unlock_irqrestore(&priv->lock, flags);
3293
3294         iwl_reset_qos(priv);
3295
3296         iwl_post_associate(priv);
3297
3298
3299         return 0;
3300 }
3301
3302 /*****************************************************************************
3303  *
3304  * sysfs attributes
3305  *
3306  *****************************************************************************/
3307
3308 #ifdef CONFIG_IWLWIFI_DEBUG
3309
3310 /*
3311  * The following adds a new attribute to the sysfs representation
3312  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3313  * used for controlling the debug level.
3314  *
3315  * See the level definitions in iwl for details.
3316  */
3317
3318 static ssize_t show_debug_level(struct device *d,
3319                                 struct device_attribute *attr, char *buf)
3320 {
3321         struct iwl_priv *priv = d->driver_data;
3322
3323         return sprintf(buf, "0x%08X\n", priv->debug_level);
3324 }
3325 static ssize_t store_debug_level(struct device *d,
3326                                 struct device_attribute *attr,
3327                                  const char *buf, size_t count)
3328 {
3329         struct iwl_priv *priv = d->driver_data;
3330         unsigned long val;
3331         int ret;
3332
3333         ret = strict_strtoul(buf, 0, &val);
3334         if (ret)
3335                 printk(KERN_INFO DRV_NAME
3336                        ": %s is not in hex or decimal form.\n", buf);
3337         else
3338                 priv->debug_level = val;
3339
3340         return strnlen(buf, count);
3341 }
3342
3343 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3344                         show_debug_level, store_debug_level);
3345
3346
3347 #endif /* CONFIG_IWLWIFI_DEBUG */
3348
3349
3350 static ssize_t show_version(struct device *d,
3351                                 struct device_attribute *attr, char *buf)
3352 {
3353         struct iwl_priv *priv = d->driver_data;
3354         struct iwl_alive_resp *palive = &priv->card_alive;
3355         ssize_t pos = 0;
3356         u16 eeprom_ver;
3357
3358         if (palive->is_valid)
3359                 pos += sprintf(buf + pos,
3360                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3361                                 "fw type: 0x%01X 0x%01X\n",
3362                                 palive->ucode_major, palive->ucode_minor,
3363                                 palive->sw_rev[0], palive->sw_rev[1],
3364                                 palive->ver_type, palive->ver_subtype);
3365         else
3366                 pos += sprintf(buf + pos, "fw not loaded\n");
3367
3368         if (priv->eeprom) {
3369                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3370                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3371                                  eeprom_ver);
3372         } else {
3373                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3374         }
3375
3376         return pos;
3377 }
3378
3379 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3380
3381 static ssize_t show_temperature(struct device *d,
3382                                 struct device_attribute *attr, char *buf)
3383 {
3384         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3385
3386         if (!iwl_is_alive(priv))
3387                 return -EAGAIN;
3388
3389         return sprintf(buf, "%d\n", priv->temperature);
3390 }
3391
3392 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3393
3394 static ssize_t show_tx_power(struct device *d,
3395                              struct device_attribute *attr, char *buf)
3396 {
3397         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3398         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3399 }
3400
3401 static ssize_t store_tx_power(struct device *d,
3402                               struct device_attribute *attr,
3403                               const char *buf, size_t count)
3404 {
3405         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3406         unsigned long val;
3407         int ret;
3408
3409         ret = strict_strtoul(buf, 10, &val);
3410         if (ret)
3411                 printk(KERN_INFO DRV_NAME
3412                        ": %s is not in decimal form.\n", buf);
3413         else
3414                 iwl_set_tx_power(priv, val, false);
3415
3416         return count;
3417 }
3418
3419 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3420
3421 static ssize_t show_flags(struct device *d,
3422                           struct device_attribute *attr, char *buf)
3423 {
3424         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3425
3426         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3427 }
3428
3429 static ssize_t store_flags(struct device *d,
3430                            struct device_attribute *attr,
3431                            const char *buf, size_t count)
3432 {
3433         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3434         unsigned long val;
3435         u32 flags;
3436         int ret = strict_strtoul(buf, 0, &val);
3437         if (ret)
3438                 return ret;
3439         flags = (u32)val;
3440
3441         mutex_lock(&priv->mutex);
3442         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3443                 /* Cancel any currently running scans... */
3444                 if (iwl_scan_cancel_timeout(priv, 100))
3445                         IWL_WARNING("Could not cancel scan.\n");
3446                 else {
3447                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3448                         priv->staging_rxon.flags = cpu_to_le32(flags);
3449                         iwl_commit_rxon(priv);
3450                 }
3451         }
3452         mutex_unlock(&priv->mutex);
3453
3454         return count;
3455 }
3456
3457 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3458
3459 static ssize_t show_filter_flags(struct device *d,
3460                                  struct device_attribute *attr, char *buf)
3461 {
3462         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3463
3464         return sprintf(buf, "0x%04X\n",
3465                 le32_to_cpu(priv->active_rxon.filter_flags));
3466 }
3467
3468 static ssize_t store_filter_flags(struct device *d,
3469                                   struct device_attribute *attr,
3470                                   const char *buf, size_t count)
3471 {
3472         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3473         unsigned long val;
3474         u32 filter_flags;
3475         int ret = strict_strtoul(buf, 0, &val);
3476         if (ret)
3477                 return ret;
3478         filter_flags = (u32)val;
3479
3480         mutex_lock(&priv->mutex);
3481         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3482                 /* Cancel any currently running scans... */
3483                 if (iwl_scan_cancel_timeout(priv, 100))
3484                         IWL_WARNING("Could not cancel scan.\n");
3485                 else {
3486                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3487                                        "0x%04X\n", filter_flags);
3488                         priv->staging_rxon.filter_flags =
3489                                 cpu_to_le32(filter_flags);
3490                         iwl_commit_rxon(priv);
3491                 }
3492         }
3493         mutex_unlock(&priv->mutex);
3494
3495         return count;
3496 }
3497
3498 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3499                    store_filter_flags);
3500
3501 static ssize_t store_retry_rate(struct device *d,
3502                                 struct device_attribute *attr,
3503                                 const char *buf, size_t count)
3504 {
3505         struct iwl_priv *priv = dev_get_drvdata(d);
3506         long val;
3507         int ret  = strict_strtol(buf, 10, &val);
3508         if (!ret)
3509                 return ret;
3510
3511         priv->retry_rate = (val > 0) ? val : 1;
3512
3513         return count;
3514 }
3515
3516 static ssize_t show_retry_rate(struct device *d,
3517                                struct device_attribute *attr, char *buf)
3518 {
3519         struct iwl_priv *priv = dev_get_drvdata(d);
3520         return sprintf(buf, "%d", priv->retry_rate);
3521 }
3522
3523 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3524                    store_retry_rate);
3525
3526 static ssize_t store_power_level(struct device *d,
3527                                  struct device_attribute *attr,
3528                                  const char *buf, size_t count)
3529 {
3530         struct iwl_priv *priv = dev_get_drvdata(d);
3531         int ret;
3532         unsigned long mode;
3533
3534
3535         mutex_lock(&priv->mutex);
3536
3537         if (!iwl_is_ready(priv)) {
3538                 ret = -EAGAIN;
3539                 goto out;
3540         }
3541
3542         ret = strict_strtoul(buf, 10, &mode);
3543         if (ret)
3544                 goto out;
3545
3546         ret = iwl_power_set_user_mode(priv, mode);
3547         if (ret) {
3548                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3549                 goto out;
3550         }
3551         ret = count;
3552
3553  out:
3554         mutex_unlock(&priv->mutex);
3555         return ret;
3556 }
3557
3558 static ssize_t show_power_level(struct device *d,
3559                                 struct device_attribute *attr, char *buf)
3560 {
3561         struct iwl_priv *priv = dev_get_drvdata(d);
3562         int mode = priv->power_data.user_power_setting;
3563         int system = priv->power_data.system_power_setting;
3564         int level = priv->power_data.power_mode;
3565         char *p = buf;
3566
3567         switch (system) {
3568         case IWL_POWER_SYS_AUTO:
3569                 p += sprintf(p, "SYSTEM:auto");
3570                 break;
3571         case IWL_POWER_SYS_AC:
3572                 p += sprintf(p, "SYSTEM:ac");
3573                 break;
3574         case IWL_POWER_SYS_BATTERY:
3575                 p += sprintf(p, "SYSTEM:battery");
3576                 break;
3577         }
3578
3579         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3580                         "fixed" : "auto");
3581         p += sprintf(p, "\tINDEX:%d", level);
3582         p += sprintf(p, "\n");
3583         return p - buf + 1;
3584 }
3585
3586 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3587                    store_power_level);
3588
3589
3590 static ssize_t show_statistics(struct device *d,
3591                                struct device_attribute *attr, char *buf)
3592 {
3593         struct iwl_priv *priv = dev_get_drvdata(d);
3594         u32 size = sizeof(struct iwl_notif_statistics);
3595         u32 len = 0, ofs = 0;
3596         u8 *data = (u8 *)&priv->statistics;
3597         int rc = 0;
3598
3599         if (!iwl_is_alive(priv))
3600                 return -EAGAIN;
3601
3602         mutex_lock(&priv->mutex);
3603         rc = iwl_send_statistics_request(priv, 0);
3604         mutex_unlock(&priv->mutex);
3605
3606         if (rc) {
3607                 len = sprintf(buf,
3608                               "Error sending statistics request: 0x%08X\n", rc);
3609                 return len;
3610         }
3611
3612         while (size && (PAGE_SIZE - len)) {
3613                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3614                                    PAGE_SIZE - len, 1);
3615                 len = strlen(buf);
3616                 if (PAGE_SIZE - len)
3617                         buf[len++] = '\n';
3618
3619                 ofs += 16;
3620                 size -= min(size, 16U);
3621         }
3622
3623         return len;
3624 }
3625
3626 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3627
3628 static ssize_t show_status(struct device *d,
3629                            struct device_attribute *attr, char *buf)
3630 {
3631         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3632         if (!iwl_is_alive(priv))
3633                 return -EAGAIN;
3634         return sprintf(buf, "0x%08x\n", (int)priv->status);
3635 }
3636
3637 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3638
3639 /*****************************************************************************
3640  *
3641  * driver setup and teardown
3642  *
3643  *****************************************************************************/
3644
3645 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3646 {
3647         priv->workqueue = create_workqueue(DRV_NAME);
3648
3649         init_waitqueue_head(&priv->wait_command_queue);
3650
3651         INIT_WORK(&priv->up, iwl_bg_up);
3652         INIT_WORK(&priv->restart, iwl_bg_restart);
3653         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3654         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3655         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3656         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3657         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3658         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3659
3660         iwl_setup_scan_deferred_work(priv);
3661         iwl_setup_power_deferred_work(priv);
3662
3663         if (priv->cfg->ops->lib->setup_deferred_work)
3664                 priv->cfg->ops->lib->setup_deferred_work(priv);
3665
3666         init_timer(&priv->statistics_periodic);
3667         priv->statistics_periodic.data = (unsigned long)priv;
3668         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3669
3670         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3671                      iwl_irq_tasklet, (unsigned long)priv);
3672 }
3673
3674 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3675 {
3676         if (priv->cfg->ops->lib->cancel_deferred_work)
3677                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3678
3679         cancel_delayed_work_sync(&priv->init_alive_start);
3680         cancel_delayed_work(&priv->scan_check);
3681         cancel_delayed_work_sync(&priv->set_power_save);
3682         cancel_delayed_work(&priv->alive_start);
3683         cancel_work_sync(&priv->beacon_update);
3684         del_timer_sync(&priv->statistics_periodic);
3685 }
3686
3687 static struct attribute *iwl_sysfs_entries[] = {
3688         &dev_attr_flags.attr,
3689         &dev_attr_filter_flags.attr,
3690         &dev_attr_power_level.attr,
3691         &dev_attr_retry_rate.attr,
3692         &dev_attr_statistics.attr,
3693         &dev_attr_status.attr,
3694         &dev_attr_temperature.attr,
3695         &dev_attr_tx_power.attr,
3696 #ifdef CONFIG_IWLWIFI_DEBUG
3697         &dev_attr_debug_level.attr,
3698 #endif
3699         &dev_attr_version.attr,
3700
3701         NULL
3702 };
3703
3704 static struct attribute_group iwl_attribute_group = {
3705         .name = NULL,           /* put in device directory */
3706         .attrs = iwl_sysfs_entries,
3707 };
3708
3709 static struct ieee80211_ops iwl_hw_ops = {
3710         .tx = iwl_mac_tx,
3711         .start = iwl_mac_start,
3712         .stop = iwl_mac_stop,
3713         .add_interface = iwl_mac_add_interface,
3714         .remove_interface = iwl_mac_remove_interface,
3715         .config = iwl_mac_config,
3716         .config_interface = iwl_mac_config_interface,
3717         .configure_filter = iwl_configure_filter,
3718         .set_key = iwl_mac_set_key,
3719         .update_tkip_key = iwl_mac_update_tkip_key,
3720         .get_stats = iwl_mac_get_stats,
3721         .get_tx_stats = iwl_mac_get_tx_stats,
3722         .conf_tx = iwl_mac_conf_tx,
3723         .reset_tsf = iwl_mac_reset_tsf,
3724         .bss_info_changed = iwl_bss_info_changed,
3725         .ampdu_action = iwl_mac_ampdu_action,
3726         .hw_scan = iwl_mac_hw_scan
3727 };
3728
3729 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3730 {
3731         int err = 0;
3732         struct iwl_priv *priv;
3733         struct ieee80211_hw *hw;
3734         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3735         unsigned long flags;
3736
3737         /************************
3738          * 1. Allocating HW data
3739          ************************/
3740
3741         /* Disabling hardware scan means that mac80211 will perform scans
3742          * "the hard way", rather than using device's scan. */
3743         if (cfg->mod_params->disable_hw_scan) {
3744                 if (cfg->mod_params->debug & IWL_DL_INFO)
3745                         dev_printk(KERN_DEBUG, &(pdev->dev),
3746                                    "Disabling hw_scan\n");
3747                 iwl_hw_ops.hw_scan = NULL;
3748         }
3749
3750         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3751         if (!hw) {
3752                 err = -ENOMEM;
3753                 goto out;
3754         }
3755         priv = hw->priv;
3756         /* At this point both hw and priv are allocated. */
3757
3758         SET_IEEE80211_DEV(hw, &pdev->dev);
3759
3760         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3761         priv->cfg = cfg;
3762         priv->pci_dev = pdev;
3763
3764 #ifdef CONFIG_IWLWIFI_DEBUG
3765         priv->debug_level = priv->cfg->mod_params->debug;
3766         atomic_set(&priv->restrict_refcnt, 0);
3767 #endif
3768
3769         /**************************
3770          * 2. Initializing PCI bus
3771          **************************/
3772         if (pci_enable_device(pdev)) {
3773                 err = -ENODEV;
3774                 goto out_ieee80211_free_hw;
3775         }
3776
3777         pci_set_master(pdev);
3778
3779         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3780         if (!err)
3781                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3782         if (err) {
3783                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3784                 if (!err)
3785                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3786                 /* both attempts failed: */
3787                 if (err) {
3788                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3789                                 DRV_NAME);
3790                         goto out_pci_disable_device;
3791                 }
3792         }
3793
3794         err = pci_request_regions(pdev, DRV_NAME);
3795         if (err)
3796                 goto out_pci_disable_device;
3797
3798         pci_set_drvdata(pdev, priv);
3799
3800
3801         /***********************
3802          * 3. Read REV register
3803          ***********************/
3804         priv->hw_base = pci_iomap(pdev, 0, 0);
3805         if (!priv->hw_base) {
3806                 err = -ENODEV;
3807                 goto out_pci_release_regions;
3808         }
3809
3810         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3811                 (unsigned long long) pci_resource_len(pdev, 0));
3812         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3813
3814         iwl_hw_detect(priv);
3815         printk(KERN_INFO DRV_NAME
3816                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3817                 priv->cfg->name, priv->hw_rev);
3818
3819         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3820          * PCI Tx retries from interfering with C3 CPU state */
3821         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3822
3823         /* amp init */
3824         err = priv->cfg->ops->lib->apm_ops.init(priv);
3825         if (err < 0) {
3826                 IWL_DEBUG_INFO("Failed to init APMG\n");
3827                 goto out_iounmap;
3828         }
3829         /*****************
3830          * 4. Read EEPROM
3831          *****************/
3832         /* Read the EEPROM */
3833         err = iwl_eeprom_init(priv);
3834         if (err) {
3835                 IWL_ERROR("Unable to init EEPROM\n");
3836                 goto out_iounmap;
3837         }
3838         err = iwl_eeprom_check_version(priv);
3839         if (err)
3840                 goto out_iounmap;
3841
3842         /* extract MAC Address */
3843         iwl_eeprom_get_mac(priv, priv->mac_addr);
3844         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3845         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3846
3847         /************************
3848          * 5. Setup HW constants
3849          ************************/
3850         if (iwl_set_hw_params(priv)) {
3851                 IWL_ERROR("failed to set hw parameters\n");
3852                 goto out_free_eeprom;
3853         }
3854
3855         /*******************
3856          * 6. Setup priv
3857          *******************/
3858
3859         err = iwl_init_drv(priv);
3860         if (err)
3861                 goto out_free_eeprom;
3862         /* At this point both hw and priv are initialized. */
3863
3864         /**********************************
3865          * 7. Initialize module parameters
3866          **********************************/
3867
3868         /* Disable radio (SW RF KILL) via parameter when loading driver */
3869         if (priv->cfg->mod_params->disable) {
3870                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3871                 IWL_DEBUG_INFO("Radio disabled.\n");
3872         }
3873
3874         /********************
3875          * 8. Setup services
3876          ********************/
3877         spin_lock_irqsave(&priv->lock, flags);
3878         iwl_disable_interrupts(priv);
3879         spin_unlock_irqrestore(&priv->lock, flags);
3880
3881         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3882         if (err) {
3883                 IWL_ERROR("failed to create sysfs device attributes\n");
3884                 goto out_uninit_drv;
3885         }
3886
3887
3888         iwl_setup_deferred_work(priv);
3889         iwl_setup_rx_handlers(priv);
3890
3891         /********************
3892          * 9. Conclude
3893          ********************/
3894         pci_save_state(pdev);
3895         pci_disable_device(pdev);
3896
3897         /**********************************
3898          * 10. Setup and register mac80211
3899          **********************************/
3900
3901         err = iwl_setup_mac(priv);
3902         if (err)
3903                 goto out_remove_sysfs;
3904
3905         err = iwl_dbgfs_register(priv, DRV_NAME);
3906         if (err)
3907                 IWL_ERROR("failed to create debugfs files\n");
3908
3909         err = iwl_rfkill_init(priv);
3910         if (err)
3911                 IWL_ERROR("Unable to initialize RFKILL system. "
3912                                   "Ignoring error: %d\n", err);
3913         iwl_power_initialize(priv);
3914         return 0;
3915
3916  out_remove_sysfs:
3917         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3918  out_uninit_drv:
3919         iwl_uninit_drv(priv);
3920  out_free_eeprom:
3921         iwl_eeprom_free(priv);
3922  out_iounmap:
3923         pci_iounmap(pdev, priv->hw_base);
3924  out_pci_release_regions:
3925         pci_release_regions(pdev);
3926         pci_set_drvdata(pdev, NULL);
3927  out_pci_disable_device:
3928         pci_disable_device(pdev);
3929  out_ieee80211_free_hw:
3930         ieee80211_free_hw(priv->hw);
3931  out:
3932         return err;
3933 }
3934
3935 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3936 {
3937         struct iwl_priv *priv = pci_get_drvdata(pdev);
3938         unsigned long flags;
3939
3940         if (!priv)
3941                 return;
3942
3943         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3944
3945         iwl_dbgfs_unregister(priv);
3946         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3947
3948         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3949          * to be called and iwl_down since we are removing the device
3950          * we need to set STATUS_EXIT_PENDING bit.
3951          */
3952         set_bit(STATUS_EXIT_PENDING, &priv->status);
3953         if (priv->mac80211_registered) {
3954                 ieee80211_unregister_hw(priv->hw);
3955                 priv->mac80211_registered = 0;
3956         } else {
3957                 iwl_down(priv);
3958         }
3959
3960         /* make sure we flush any pending irq or
3961          * tasklet for the driver
3962          */
3963         spin_lock_irqsave(&priv->lock, flags);
3964         iwl_disable_interrupts(priv);
3965         spin_unlock_irqrestore(&priv->lock, flags);
3966
3967         iwl_synchronize_irq(priv);
3968
3969         iwl_rfkill_unregister(priv);
3970         iwl_dealloc_ucode_pci(priv);
3971
3972         if (priv->rxq.bd)
3973                 iwl_rx_queue_free(priv, &priv->rxq);
3974         iwl_hw_txq_ctx_free(priv);
3975
3976         iwl_clear_stations_table(priv);
3977         iwl_eeprom_free(priv);
3978
3979
3980         /*netif_stop_queue(dev); */
3981         flush_workqueue(priv->workqueue);
3982
3983         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3984          * priv->workqueue... so we can't take down the workqueue
3985          * until now... */
3986         destroy_workqueue(priv->workqueue);
3987         priv->workqueue = NULL;
3988
3989         pci_iounmap(pdev, priv->hw_base);
3990         pci_release_regions(pdev);
3991         pci_disable_device(pdev);
3992         pci_set_drvdata(pdev, NULL);
3993
3994         iwl_uninit_drv(priv);
3995
3996         if (priv->ibss_beacon)
3997                 dev_kfree_skb(priv->ibss_beacon);
3998
3999         ieee80211_free_hw(priv->hw);
4000 }
4001
4002 #ifdef CONFIG_PM
4003
4004 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4005 {
4006         struct iwl_priv *priv = pci_get_drvdata(pdev);
4007
4008         if (priv->is_open) {
4009                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4010                 iwl_mac_stop(priv->hw);
4011                 priv->is_open = 1;
4012         }
4013
4014         pci_set_power_state(pdev, PCI_D3hot);
4015
4016         return 0;
4017 }
4018
4019 static int iwl_pci_resume(struct pci_dev *pdev)
4020 {
4021         struct iwl_priv *priv = pci_get_drvdata(pdev);
4022
4023         pci_set_power_state(pdev, PCI_D0);
4024
4025         if (priv->is_open)
4026                 iwl_mac_start(priv->hw);
4027
4028         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4029         return 0;
4030 }
4031
4032 #endif /* CONFIG_PM */
4033
4034 /*****************************************************************************
4035  *
4036  * driver and module entry point
4037  *
4038  *****************************************************************************/
4039
4040 /* Hardware specific file defines the PCI IDs table for that hardware module */
4041 static struct pci_device_id iwl_hw_card_ids[] = {
4042 #ifdef CONFIG_IWL4965
4043         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4044         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4045 #endif /* CONFIG_IWL4965 */
4046 #ifdef CONFIG_IWL5000
4047         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4048         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4049         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4050         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4051         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4052         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4053         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4054         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4055         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4056         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4057 /* 5350 WiFi/WiMax */
4058         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4059         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4060         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4061 /* 5150 Wifi/WiMax */
4062         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4063         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4064 #endif /* CONFIG_IWL5000 */
4065
4066         {0}
4067 };
4068 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4069
4070 static struct pci_driver iwl_driver = {
4071         .name = DRV_NAME,
4072         .id_table = iwl_hw_card_ids,
4073         .probe = iwl_pci_probe,
4074         .remove = __devexit_p(iwl_pci_remove),
4075 #ifdef CONFIG_PM
4076         .suspend = iwl_pci_suspend,
4077         .resume = iwl_pci_resume,
4078 #endif
4079 };
4080
4081 static int __init iwl_init(void)
4082 {
4083
4084         int ret;
4085         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4086         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4087
4088         ret = iwlagn_rate_control_register();
4089         if (ret) {
4090                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4091                 return ret;
4092         }
4093
4094         ret = pci_register_driver(&iwl_driver);
4095         if (ret) {
4096                 IWL_ERROR("Unable to initialize PCI module\n");
4097                 goto error_register;
4098         }
4099
4100         return ret;
4101
4102 error_register:
4103         iwlagn_rate_control_unregister();
4104         return ret;
4105 }
4106
4107 static void __exit iwl_exit(void)
4108 {
4109         pci_unregister_driver(&iwl_driver);
4110         iwlagn_rate_control_unregister();
4111 }
4112
4113 module_exit(iwl_exit);
4114 module_init(iwl_init);