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