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 " " DRV_AUTHOR);
  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 iwl_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 iwl_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                                           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                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 428
 429         BUG_ON(frame_size > MAX_MPDU_SIZE);
 430         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 431
 432         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 433                 tx_beacon_cmd->tx.rate_n_flags =
 434                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 435         else
 436                 tx_beacon_cmd->tx.rate_n_flags =
 437                         iwl_hw_set_rate_n_flags(rate, 0);
 438
 439         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 440                                      TX_CMD_FLG_TSF_MSK |
 441                                      TX_CMD_FLG_STA_RATE_MSK;
 442
 443         return sizeof(*tx_beacon_cmd) + frame_size;
 444 }
 445 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 446 {
 447         struct iwl_frame *frame;
 448         unsigned int frame_size;
 449         int rc;
 450         u8 rate;
 451
 452         frame = iwl_get_free_frame(priv);
 453
 454         if (!frame) {
 455                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 456                           "command.\n");
 457                 return -ENOMEM;
 458         }
 459
 460         rate = iwl_rate_get_lowest_plcp(priv);
 461
 462         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 463
 464         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 465                               &frame->u.cmd[0]);
 466
 467         iwl_free_frame(priv, frame);
 468
 469         return rc;
 470 }
 471
 472 /******************************************************************************
 473  *
 474  * Misc. internal state and helper functions
 475  *
 476  ******************************************************************************/
 477
 478 static void iwl_ht_conf(struct iwl_priv *priv,
 479                             struct ieee80211_bss_conf *bss_conf)
 480 {
 481         struct ieee80211_sta_ht_cap *ht_conf;
 482         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 483         struct ieee80211_sta *sta;
 484
 485         IWL_DEBUG_MAC80211("enter: \n");
 486
 487         if (!iwl_conf->is_ht)
 488                 return;
 489
 490
 491         /*
 492          * It is totally wrong to base global information on something
 493          * that is valid only when associated, alas, this driver works
 494          * that way and I don't know how to fix it.
 495          */
 496
 497         rcu_read_lock();
 498         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 499         if (!sta) {
 500                 rcu_read_unlock();
 501                 return;
 502         }
 503         ht_conf = &sta->ht_cap;
 504
 505         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 506                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 507         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 508                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 509
 510         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 511         iwl_conf->max_amsdu_size =
 512                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 513
 514         iwl_conf->supported_chan_width =
 515                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 516
 517         /*
 518          * XXX: The HT configuration needs to be moved into iwl_mac_config()
 519          *      to be done there correctly.
 520          */
 521
 522         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 523         if (priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40MINUS)
 524                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 525         else if(priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40PLUS)
 526                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 527
 528         /* If no above or below channel supplied disable FAT channel */
 529         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 530             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 531                 iwl_conf->supported_chan_width = 0;
 532
 533         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 534
 535         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 536
 537         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
 538         iwl_conf->ht_protection =
 539                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 540         iwl_conf->non_GF_STA_present =
 541                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 542
 543         rcu_read_unlock();
 544
 545         IWL_DEBUG_MAC80211("leave\n");
 546 }
 547
 548 /*
 549  * QoS  support
 550 */
 551 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 552 {
 553         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 554                 return;
 555
 556         priv->qos_data.def_qos_parm.qos_flags = 0;
 557
 558         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 559             !priv->qos_data.qos_cap.q_AP.txop_request)
 560                 priv->qos_data.def_qos_parm.qos_flags |=
 561                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 562         if (priv->qos_data.qos_active)
 563                 priv->qos_data.def_qos_parm.qos_flags |=
 564                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 565
 566         if (priv->current_ht_config.is_ht)
 567                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 568
 569         if (force || iwl_is_associated(priv)) {
 570                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 571                                 priv->qos_data.qos_active,
 572                                 priv->qos_data.def_qos_parm.qos_flags);
 573
 574                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 575                                        sizeof(struct iwl_qosparam_cmd),
 576                                        &priv->qos_data.def_qos_parm, NULL);
 577         }
 578 }
 579
 580 #define MAX_UCODE_BEACON_INTERVAL       4096
 581
 582 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 583 {
 584         u16 new_val = 0;
 585         u16 beacon_factor = 0;
 586
 587         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 588                                         / MAX_UCODE_BEACON_INTERVAL;
 589         new_val = beacon_val / beacon_factor;
 590
 591         return new_val;
 592 }
 593
 594 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 595 {
 596         u64 tsf;
 597         s32 interval_tm, rem;
 598         unsigned long flags;
 599         struct ieee80211_conf *conf = NULL;
 600         u16 beacon_int = 0;
 601
 602         conf = ieee80211_get_hw_conf(priv->hw);
 603
 604         spin_lock_irqsave(&priv->lock, flags);
 605         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 606         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 607
 608         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 609                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 610                 priv->rxon_timing.atim_window = 0;
 611         } else {
 612                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 613
 614                 /* TODO: we need to get atim_window from upper stack
 615                  * for now we set to 0 */
 616                 priv->rxon_timing.atim_window = 0;
 617         }
 618
 619         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 620
 621         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 622         interval_tm = beacon_int * 1024;
 623         rem = do_div(tsf, interval_tm);
 624         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 625
 626         spin_unlock_irqrestore(&priv->lock, flags);
 627         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 628                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 629                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 630                         le16_to_cpu(priv->rxon_timing.atim_window));
 631 }
 632
 633 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 634                                    enum ieee80211_band band)
 635 {
 636         if (band == IEEE80211_BAND_5GHZ) {
 637                 priv->staging_rxon.flags &=
 638                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 639                       | RXON_FLG_CCK_MSK);
 640                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 641         } else {
 642                 /* Copied from iwl_post_associate() */
 643                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 644                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 645                 else
 646                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 647
 648                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 649                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 650
 651                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 652                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 653                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 654         }
 655 }
 656
 657 /*
 658  * initialize rxon structure with default values from eeprom
 659  */
 660 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 661 {
 662         const struct iwl_channel_info *ch_info;
 663
 664         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 665
 666         switch (mode) {
 667         case NL80211_IFTYPE_AP:
 668                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 669                 break;
 670
 671         case NL80211_IFTYPE_STATION:
 672                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 673                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 674                 break;
 675
 676         case NL80211_IFTYPE_ADHOC:
 677                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 678                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 679                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 680                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 681                 break;
 682
 683         case NL80211_IFTYPE_MONITOR:
 684                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 685                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 686                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 687                 break;
 688         default:
 689                 IWL_ERROR("Unsupported interface type %d\n", mode);
 690                 break;
 691         }
 692
 693 #if 0
 694         /* TODO:  Figure out when short_preamble would be set and cache from
 695          * that */
 696         if (!hw_to_local(priv->hw)->short_preamble)
 697                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 698         else
 699                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 700 #endif
 701
 702         ch_info = iwl_get_channel_info(priv, priv->band,
 703                                        le16_to_cpu(priv->active_rxon.channel));
 704
 705         if (!ch_info)
 706                 ch_info = &priv->channel_info[0];
 707
 708         /*
 709          * in some case A channels are all non IBSS
 710          * in this case force B/G channel
 711          */
 712         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 713             !(is_channel_ibss(ch_info)))
 714                 ch_info = &priv->channel_info[0];
 715
 716         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 717         priv->band = ch_info->band;
 718
 719         iwl_set_flags_for_band(priv, priv->band);
 720
 721         priv->staging_rxon.ofdm_basic_rates =
 722             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 723         priv->staging_rxon.cck_basic_rates =
 724             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 725
 726         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 727                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 728         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 729         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 730         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 731         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 732         iwl_set_rxon_chain(priv);
 733 }
 734
 735 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 736 {
 737         iwl_connection_init_rx_config(priv, mode);
 738         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 739
 740         iwl_clear_stations_table(priv);
 741
 742         /* dont commit rxon if rf-kill is on*/
 743         if (!iwl_is_ready_rf(priv))
 744                 return -EAGAIN;
 745
 746         cancel_delayed_work(&priv->scan_check);
 747         if (iwl_scan_cancel_timeout(priv, 100)) {
 748                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 749                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 750                 return -EAGAIN;
 751         }
 752
 753         iwl_commit_rxon(priv);
 754
 755         return 0;
 756 }
 757
 758 static void iwl_set_rate(struct iwl_priv *priv)
 759 {
 760         const struct ieee80211_supported_band *hw = NULL;
 761         struct ieee80211_rate *rate;
 762         int i;
 763
 764         hw = iwl_get_hw_mode(priv, priv->band);
 765         if (!hw) {
 766                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 767                 return;
 768         }
 769
 770         priv->active_rate = 0;
 771         priv->active_rate_basic = 0;
 772
 773         for (i = 0; i < hw->n_bitrates; i++) {
 774                 rate = &(hw->bitrates[i]);
 775                 if (rate->hw_value < IWL_RATE_COUNT)
 776                         priv->active_rate |= (1 << rate->hw_value);
 777         }
 778
 779         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 780                        priv->active_rate, priv->active_rate_basic);
 781
 782         /*
 783          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 784          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 785          * OFDM
 786          */
 787         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 788                 priv->staging_rxon.cck_basic_rates =
 789                     ((priv->active_rate_basic &
 790                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 791         else
 792                 priv->staging_rxon.cck_basic_rates =
 793                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 796                 priv->staging_rxon.ofdm_basic_rates =
 797                     ((priv->active_rate_basic &
 798                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 799                       IWL_FIRST_OFDM_RATE) & 0xFF;
 800         else
 801                 priv->staging_rxon.ofdm_basic_rates =
 802                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 803 }
 804
 805
 806 /******************************************************************************
 807  *
 808  * Generic RX handler implementations
 809  *
 810  ******************************************************************************/
 811 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 812                                 struct iwl_rx_mem_buffer *rxb)
 813 {
 814         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 815         struct iwl_alive_resp *palive;
 816         struct delayed_work *pwork;
 817
 818         palive = &pkt->u.alive_frame;
 819
 820         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 821                        "0x%01X 0x%01X\n",
 822                        palive->is_valid, palive->ver_type,
 823                        palive->ver_subtype);
 824
 825         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 826                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 827                 memcpy(&priv->card_alive_init,
 828                        &pkt->u.alive_frame,
 829                        sizeof(struct iwl_init_alive_resp));
 830                 pwork = &priv->init_alive_start;
 831         } else {
 832                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 833                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 834                        sizeof(struct iwl_alive_resp));
 835                 pwork = &priv->alive_start;
 836         }
 837
 838         /* We delay the ALIVE response by 5ms to
 839          * give the HW RF Kill time to activate... */
 840         if (palive->is_valid == UCODE_VALID_OK)
 841                 queue_delayed_work(priv->workqueue, pwork,
 842                                    msecs_to_jiffies(5));
 843         else
 844                 IWL_WARNING("uCode did not respond OK.\n");
 845 }
 846
 847 static void iwl_rx_reply_error(struct iwl_priv *priv,
 848                                    struct iwl_rx_mem_buffer *rxb)
 849 {
 850         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 851
 852         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 853                 "seq 0x%04X ser 0x%08X\n",
 854                 le32_to_cpu(pkt->u.err_resp.error_type),
 855                 get_cmd_string(pkt->u.err_resp.cmd_id),
 856                 pkt->u.err_resp.cmd_id,
 857                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 858                 le32_to_cpu(pkt->u.err_resp.error_info));
 859 }
 860
 861 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 862
 863 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 864 {
 865         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 866         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 867         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
 868         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 869                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 870         rxon->channel = csa->channel;
 871         priv->staging_rxon.channel = csa->channel;
 872 }
 873
 874 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 875                                       struct iwl_rx_mem_buffer *rxb)
 876 {
 877 #ifdef CONFIG_IWLWIFI_DEBUG
 878         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 879         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
 880         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 881                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 882 #endif
 883 }
 884
 885 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 886                                              struct iwl_rx_mem_buffer *rxb)
 887 {
 888         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 889         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 890                         "notification for %s:\n",
 891                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 892         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 893 }
 894
 895 static void iwl_bg_beacon_update(struct work_struct *work)
 896 {
 897         struct iwl_priv *priv =
 898                 container_of(work, struct iwl_priv, beacon_update);
 899         struct sk_buff *beacon;
 900
 901         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 902         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 903
 904         if (!beacon) {
 905                 IWL_ERROR("update beacon failed\n");
 906                 return;
 907         }
 908
 909         mutex_lock(&priv->mutex);
 910         /* new beacon skb is allocated every time; dispose previous.*/
 911         if (priv->ibss_beacon)
 912                 dev_kfree_skb(priv->ibss_beacon);
 913
 914         priv->ibss_beacon = beacon;
 915         mutex_unlock(&priv->mutex);
 916
 917         iwl_send_beacon_cmd(priv);
 918 }
 919
 920 /**
 921  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 922  *
 923  * This callback is provided in order to send a statistics request.
 924  *
 925  * This timer function is continually reset to execute within
 926  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 927  * was received.  We need to ensure we receive the statistics in order
 928  * to update the temperature used for calibrating the TXPOWER.
 929  */
 930 static void iwl_bg_statistics_periodic(unsigned long data)
 931 {
 932         struct iwl_priv *priv = (struct iwl_priv *)data;
 933
 934         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 935                 return;
 936
 937         /* dont send host command if rf-kill is on */
 938         if (!iwl_is_ready_rf(priv))
 939                 return;
 940
 941         iwl_send_statistics_request(priv, CMD_ASYNC);
 942 }
 943
 944 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 945                                 struct iwl_rx_mem_buffer *rxb)
 946 {
 947 #ifdef CONFIG_IWLWIFI_DEBUG
 948         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 949         struct iwl4965_beacon_notif *beacon =
 950                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 951         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 952
 953         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 954                 "tsf %d %d rate %d\n",
 955                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 956                 beacon->beacon_notify_hdr.failure_frame,
 957                 le32_to_cpu(beacon->ibss_mgr_status),
 958                 le32_to_cpu(beacon->high_tsf),
 959                 le32_to_cpu(beacon->low_tsf), rate);
 960 #endif
 961
 962         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 963             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 964                 queue_work(priv->workqueue, &priv->beacon_update);
 965 }
 966
 967 /* Handle notification from uCode that card's power state is changing
 968  * due to software, hardware, or critical temperature RFKILL */
 969 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 970                                     struct iwl_rx_mem_buffer *rxb)
 971 {
 972         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 973         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 974         unsigned long status = priv->status;
 975
 976         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 977                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 978                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 979
 980         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 981                      RF_CARD_DISABLED)) {
 982
 983                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 984                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 985
 986                 if (!iwl_grab_nic_access(priv)) {
 987                         iwl_write_direct32(
 988                                 priv, HBUS_TARG_MBX_C,
 989                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 990
 991                         iwl_release_nic_access(priv);
 992                 }
 993
 994                 if (!(flags & RXON_CARD_DISABLED)) {
 995                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 996                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 997                         if (!iwl_grab_nic_access(priv)) {
 998                                 iwl_write_direct32(
 999                                         priv, HBUS_TARG_MBX_C,
1000                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1001
1002                                 iwl_release_nic_access(priv);
1003                         }
1004                 }
1005
1006                 if (flags & RF_CARD_DISABLED) {
1007                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1008                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1009                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1010                         if (!iwl_grab_nic_access(priv))
1011                                 iwl_release_nic_access(priv);
1012                 }
1013         }
1014
1015         if (flags & HW_CARD_DISABLED)
1016                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1017         else
1018                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1019
1020
1021         if (flags & SW_CARD_DISABLED)
1022                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1023         else
1024                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1025
1026         if (!(flags & RXON_CARD_DISABLED))
1027                 iwl_scan_cancel(priv);
1028
1029         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1030              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1031             (test_bit(STATUS_RF_KILL_SW, &status) !=
1032              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1033                 queue_work(priv->workqueue, &priv->rf_kill);
1034         else
1035                 wake_up_interruptible(&priv->wait_command_queue);
1036 }
1037
1038 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1039 {
1040         int ret;
1041         unsigned long flags;
1042
1043         spin_lock_irqsave(&priv->lock, flags);
1044         ret = iwl_grab_nic_access(priv);
1045         if (ret)
1046                 goto err;
1047
1048         if (src == IWL_PWR_SRC_VAUX) {
1049                 u32 val;
1050                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1051                                             &val);
1052
1053                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1054                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1055                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1056                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1057         } else {
1058                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1059                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1060                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1061         }
1062
1063         iwl_release_nic_access(priv);
1064 err:
1065         spin_unlock_irqrestore(&priv->lock, flags);
1066         return ret;
1067 }
1068
1069 /**
1070  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1071  *
1072  * Setup the RX handlers for each of the reply types sent from the uCode
1073  * to the host.
1074  *
1075  * This function chains into the hardware specific files for them to setup
1076  * any hardware specific handlers as well.
1077  */
1078 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1079 {
1080         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1081         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1082         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1083         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1084         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1085             iwl_rx_pm_debug_statistics_notif;
1086         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1087
1088         /*
1089          * The same handler is used for both the REPLY to a discrete
1090          * statistics request from the host as well as for the periodic
1091          * statistics notifications (after received beacons) from the uCode.
1092          */
1093         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1094         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1095
1096         iwl_setup_spectrum_handlers(priv);
1097         iwl_setup_rx_scan_handlers(priv);
1098
1099         /* status change handler */
1100         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1101
1102         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1103             iwl_rx_missed_beacon_notif;
1104         /* Rx handlers */
1105         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1106         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1107         /* block ack */
1108         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1109         /* Set up hardware specific Rx handlers */
1110         priv->cfg->ops->lib->rx_handler_setup(priv);
1111 }
1112
1113 /**
1114  * iwl_rx_handle - Main entry function for receiving responses from uCode
1115  *
1116  * Uses the priv->rx_handlers callback function array to invoke
1117  * the appropriate handlers, including command responses,
1118  * frame-received notifications, and other notifications.
1119  */
1120 void iwl_rx_handle(struct iwl_priv *priv)
1121 {
1122         struct iwl_rx_mem_buffer *rxb;
1123         struct iwl_rx_packet *pkt;
1124         struct iwl_rx_queue *rxq = &priv->rxq;
1125         u32 r, i;
1126         int reclaim;
1127         unsigned long flags;
1128         u8 fill_rx = 0;
1129         u32 count = 8;
1130
1131         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1132          * buffer that the driver may process (last buffer filled by ucode). */
1133         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1134         i = rxq->read;
1135
1136         /* Rx interrupt, but nothing sent from uCode */
1137         if (i == r)
1138                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1139
1140         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1141                 fill_rx = 1;
1142
1143         while (i != r) {
1144                 rxb = rxq->queue[i];
1145
1146                 /* If an RXB doesn't have a Rx queue slot associated with it,
1147                  * then a bug has been introduced in the queue refilling
1148                  * routines -- catch it here */
1149                 BUG_ON(rxb == NULL);
1150
1151                 rxq->queue[i] = NULL;
1152
1153                 dma_sync_single_range_for_cpu(
1154                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1155                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1156                                 priv->hw_params.rx_buf_size,
1157                                 PCI_DMA_FROMDEVICE);
1158                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1159
1160                 /* Reclaim a command buffer only if this packet is a response
1161                  *   to a (driver-originated) command.
1162                  * If the packet (e.g. Rx frame) originated from uCode,
1163                  *   there is no command buffer to reclaim.
1164                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1165                  *   but apparently a few don't get set; catch them here. */
1166                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1167                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1168                         (pkt->hdr.cmd != REPLY_RX) &&
1169                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1170                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1171                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1172                         (pkt->hdr.cmd != REPLY_TX);
1173
1174                 /* Based on type of command response or notification,
1175                  *   handle those that need handling via function in
1176                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1177                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1178                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1179                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1180                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1181                 } else {
1182                         /* No handling needed */
1183                         IWL_DEBUG(IWL_DL_RX,
1184                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1185                                 r, i, get_cmd_string(pkt->hdr.cmd),
1186                                 pkt->hdr.cmd);
1187                 }
1188
1189                 if (reclaim) {
1190                         /* Invoke any callbacks, transfer the skb to caller, and
1191                          * fire off the (possibly) blocking iwl_send_cmd()
1192                          * as we reclaim the driver command queue */
1193                         if (rxb && rxb->skb)
1194                                 iwl_tx_cmd_complete(priv, rxb);
1195                         else
1196                                 IWL_WARNING("Claim null rxb?\n");
1197                 }
1198
1199                 /* For now we just don't re-use anything.  We can tweak this
1200                  * later to try and re-use notification packets and SKBs that
1201                  * fail to Rx correctly */
1202                 if (rxb->skb != NULL) {
1203                         priv->alloc_rxb_skb--;
1204                         dev_kfree_skb_any(rxb->skb);
1205                         rxb->skb = NULL;
1206                 }
1207
1208                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1209                                  priv->hw_params.rx_buf_size + 256,
1210                                  PCI_DMA_FROMDEVICE);
1211                 spin_lock_irqsave(&rxq->lock, flags);
1212                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1213                 spin_unlock_irqrestore(&rxq->lock, flags);
1214                 i = (i + 1) & RX_QUEUE_MASK;
1215                 /* If there are a lot of unused frames,
1216                  * restock the Rx queue so ucode wont assert. */
1217                 if (fill_rx) {
1218                         count++;
1219                         if (count >= 8) {
1220                                 priv->rxq.read = i;
1221                                 iwl_rx_queue_restock(priv);
1222                                 count = 0;
1223                         }
1224                 }
1225         }
1226
1227         /* Backtrack one entry */
1228         priv->rxq.read = i;
1229         iwl_rx_queue_restock(priv);
1230 }
1231
1232 #ifdef CONFIG_IWLWIFI_DEBUG
1233 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1234 {
1235         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1236
1237         IWL_DEBUG_RADIO("RX CONFIG:\n");
1238         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1239         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1240         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1241         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1242                         le32_to_cpu(rxon->filter_flags));
1243         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1244         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1245                         rxon->ofdm_basic_rates);
1246         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1247         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1248         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1249         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1250 }
1251 #endif
1252
1253 /* call this function to flush any scheduled tasklet */
1254 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1255 {
1256         /* wait to make sure we flush pending tasklet*/
1257         synchronize_irq(priv->pci_dev->irq);
1258         tasklet_kill(&priv->irq_tasklet);
1259 }
1260
1261 /**
1262  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1263  */
1264 static void iwl_irq_handle_error(struct iwl_priv *priv)
1265 {
1266         /* Set the FW error flag -- cleared on iwl_down */
1267         set_bit(STATUS_FW_ERROR, &priv->status);
1268
1269         /* Cancel currently queued command. */
1270         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1271
1272 #ifdef CONFIG_IWLWIFI_DEBUG
1273         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1274                 iwl_dump_nic_error_log(priv);
1275                 iwl_dump_nic_event_log(priv);
1276                 iwl_print_rx_config_cmd(priv);
1277         }
1278 #endif
1279
1280         wake_up_interruptible(&priv->wait_command_queue);
1281
1282         /* Keep the restart process from trying to send host
1283          * commands by clearing the INIT status bit */
1284         clear_bit(STATUS_READY, &priv->status);
1285
1286         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1287                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1288                           "Restarting adapter due to uCode error.\n");
1289
1290                 if (iwl_is_associated(priv)) {
1291                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1292                                sizeof(priv->recovery_rxon));
1293                         priv->error_recovering = 1;
1294                 }
1295                 if (priv->cfg->mod_params->restart_fw)
1296                         queue_work(priv->workqueue, &priv->restart);
1297         }
1298 }
1299
1300 static void iwl_error_recovery(struct iwl_priv *priv)
1301 {
1302         unsigned long flags;
1303
1304         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1305                sizeof(priv->staging_rxon));
1306         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1307         iwl_commit_rxon(priv);
1308
1309         iwl_rxon_add_station(priv, priv->bssid, 1);
1310
1311         spin_lock_irqsave(&priv->lock, flags);
1312         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1313         priv->error_recovering = 0;
1314         spin_unlock_irqrestore(&priv->lock, flags);
1315 }
1316
1317 static void iwl_irq_tasklet(struct iwl_priv *priv)
1318 {
1319         u32 inta, handled = 0;
1320         u32 inta_fh;
1321         unsigned long flags;
1322 #ifdef CONFIG_IWLWIFI_DEBUG
1323         u32 inta_mask;
1324 #endif
1325
1326         spin_lock_irqsave(&priv->lock, flags);
1327
1328         /* Ack/clear/reset pending uCode interrupts.
1329          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1330          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1331         inta = iwl_read32(priv, CSR_INT);
1332         iwl_write32(priv, CSR_INT, inta);
1333
1334         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1335          * Any new interrupts that happen after this, either while we're
1336          * in this tasklet, or later, will show up in next ISR/tasklet. */
1337         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1338         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1339
1340 #ifdef CONFIG_IWLWIFI_DEBUG
1341         if (priv->debug_level & IWL_DL_ISR) {
1342                 /* just for debug */
1343                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1344                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1345                               inta, inta_mask, inta_fh);
1346         }
1347 #endif
1348
1349         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1350          * atomic, make sure that inta covers all the interrupts that
1351          * we've discovered, even if FH interrupt came in just after
1352          * reading CSR_INT. */
1353         if (inta_fh & CSR49_FH_INT_RX_MASK)
1354                 inta |= CSR_INT_BIT_FH_RX;
1355         if (inta_fh & CSR49_FH_INT_TX_MASK)
1356                 inta |= CSR_INT_BIT_FH_TX;
1357
1358         /* Now service all interrupt bits discovered above. */
1359         if (inta & CSR_INT_BIT_HW_ERR) {
1360                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1361
1362                 /* Tell the device to stop sending interrupts */
1363                 iwl_disable_interrupts(priv);
1364
1365                 iwl_irq_handle_error(priv);
1366
1367                 handled |= CSR_INT_BIT_HW_ERR;
1368
1369                 spin_unlock_irqrestore(&priv->lock, flags);
1370
1371                 return;
1372         }
1373
1374 #ifdef CONFIG_IWLWIFI_DEBUG
1375         if (priv->debug_level & (IWL_DL_ISR)) {
1376                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1377                 if (inta & CSR_INT_BIT_SCD)
1378                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1379                                       "the frame/frames.\n");
1380
1381                 /* Alive notification via Rx interrupt will do the real work */
1382                 if (inta & CSR_INT_BIT_ALIVE)
1383                         IWL_DEBUG_ISR("Alive interrupt\n");
1384         }
1385 #endif
1386         /* Safely ignore these bits for debug checks below */
1387         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1388
1389         /* HW RF KILL switch toggled */
1390         if (inta & CSR_INT_BIT_RF_KILL) {
1391                 int hw_rf_kill = 0;
1392                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1393                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1394                         hw_rf_kill = 1;
1395
1396                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1397                                 hw_rf_kill ? "disable radio" : "enable radio");
1398
1399                 /* driver only loads ucode once setting the interface up.
1400                  * the driver as well won't allow loading if RFKILL is set
1401                  * therefore no need to restart the driver from this handler
1402                  */
1403                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1404                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1405                         if (priv->is_open && !iwl_is_rfkill(priv))
1406                                 queue_work(priv->workqueue, &priv->up);
1407                 }
1408
1409                 handled |= CSR_INT_BIT_RF_KILL;
1410         }
1411
1412         /* Chip got too hot and stopped itself */
1413         if (inta & CSR_INT_BIT_CT_KILL) {
1414                 IWL_ERROR("Microcode CT kill error detected.\n");
1415                 handled |= CSR_INT_BIT_CT_KILL;
1416         }
1417
1418         /* Error detected by uCode */
1419         if (inta & CSR_INT_BIT_SW_ERR) {
1420                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1421                           inta);
1422                 iwl_irq_handle_error(priv);
1423                 handled |= CSR_INT_BIT_SW_ERR;
1424         }
1425
1426         /* uCode wakes up after power-down sleep */
1427         if (inta & CSR_INT_BIT_WAKEUP) {
1428                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1429                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1430                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1431                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1432                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1433                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1434                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1435                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1436
1437                 handled |= CSR_INT_BIT_WAKEUP;
1438         }
1439
1440         /* All uCode command responses, including Tx command responses,
1441          * Rx "responses" (frame-received notification), and other
1442          * notifications from uCode come through here*/
1443         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1444                 iwl_rx_handle(priv);
1445                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1446         }
1447
1448         if (inta & CSR_INT_BIT_FH_TX) {
1449                 IWL_DEBUG_ISR("Tx interrupt\n");
1450                 handled |= CSR_INT_BIT_FH_TX;
1451                 /* FH finished to write, send event */
1452                 priv->ucode_write_complete = 1;
1453                 wake_up_interruptible(&priv->wait_command_queue);
1454         }
1455
1456         if (inta & ~handled)
1457                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1458
1459         if (inta & ~CSR_INI_SET_MASK) {
1460                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1461                          inta & ~CSR_INI_SET_MASK);
1462                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1463         }
1464
1465         /* Re-enable all interrupts */
1466         /* only Re-enable if diabled by irq */
1467         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1468                 iwl_enable_interrupts(priv);
1469
1470 #ifdef CONFIG_IWLWIFI_DEBUG
1471         if (priv->debug_level & (IWL_DL_ISR)) {
1472                 inta = iwl_read32(priv, CSR_INT);
1473                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1474                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1475                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1476                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1477         }
1478 #endif
1479         spin_unlock_irqrestore(&priv->lock, flags);
1480 }
1481
1482 static irqreturn_t iwl_isr(int irq, void *data)
1483 {
1484         struct iwl_priv *priv = data;
1485         u32 inta, inta_mask;
1486         u32 inta_fh;
1487         if (!priv)
1488                 return IRQ_NONE;
1489
1490         spin_lock(&priv->lock);
1491
1492         /* Disable (but don't clear!) interrupts here to avoid
1493          *    back-to-back ISRs and sporadic interrupts from our NIC.
1494          * If we have something to service, the tasklet will re-enable ints.
1495          * If we *don't* have something, we'll re-enable before leaving here. */
1496         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1497         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1498
1499         /* Discover which interrupts are active/pending */
1500         inta = iwl_read32(priv, CSR_INT);
1501         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1502
1503         /* Ignore interrupt if there's nothing in NIC to service.
1504          * This may be due to IRQ shared with another device,
1505          * or due to sporadic interrupts thrown from our NIC. */
1506         if (!inta && !inta_fh) {
1507                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1508                 goto none;
1509         }
1510
1511         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1512                 /* Hardware disappeared. It might have already raised
1513                  * an interrupt */
1514                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1515                 goto unplugged;
1516         }
1517
1518         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1519                       inta, inta_mask, inta_fh);
1520
1521         inta &= ~CSR_INT_BIT_SCD;
1522
1523         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1524         if (likely(inta || inta_fh))
1525                 tasklet_schedule(&priv->irq_tasklet);
1526
1527  unplugged:
1528         spin_unlock(&priv->lock);
1529         return IRQ_HANDLED;
1530
1531  none:
1532         /* re-enable interrupts here since we don't have anything to service. */
1533         /* only Re-enable if diabled by irq */
1534         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1535                 iwl_enable_interrupts(priv);
1536         spin_unlock(&priv->lock);
1537         return IRQ_NONE;
1538 }
1539
1540 /******************************************************************************
1541  *
1542  * uCode download functions
1543  *
1544  ******************************************************************************/
1545
1546 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1547 {
1548         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1549         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1550         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1551         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1552         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1553         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1554 }
1555
1556 static void iwl_nic_start(struct iwl_priv *priv)
1557 {
1558         /* Remove all resets to allow NIC to operate */
1559         iwl_write32(priv, CSR_RESET, 0);
1560 }
1561
1562
1563 /**
1564  * iwl_read_ucode - Read uCode images from disk file.
1565  *
1566  * Copy into buffers for card to fetch via bus-mastering
1567  */
1568 static int iwl_read_ucode(struct iwl_priv *priv)
1569 {
1570         struct iwl_ucode *ucode;
1571         int ret = -EINVAL, index;
1572         const struct firmware *ucode_raw;
1573         const char *name_pre = priv->cfg->fw_name_pre;
1574         const unsigned int api_max = priv->cfg->ucode_api_max;
1575         const unsigned int api_min = priv->cfg->ucode_api_min;
1576         char buf[25];
1577         u8 *src;
1578         size_t len;
1579         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1580
1581         /* Ask kernel firmware_class module to get the boot firmware off disk.
1582          * request_firmware() is synchronous, file is in memory on return. */
1583         for (index = api_max; index >= api_min; index--) {
1584                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1585                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1586                 if (ret < 0) {
1587                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
1588                                   buf, ret);
1589                         if (ret == -ENOENT)
1590                                 continue;
1591                         else
1592                                 goto error;
1593                 } else {
1594                         if (index < api_max)
1595                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1596                                           buf, api_max);
1597                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1598                                        buf, ucode_raw->size);
1599                         break;
1600                 }
1601         }
1602
1603         if (ret < 0)
1604                 goto error;
1605
1606         /* Make sure that we got at least our header! */
1607         if (ucode_raw->size < sizeof(*ucode)) {
1608                 IWL_ERROR("File size way too small!\n");
1609                 ret = -EINVAL;
1610                 goto err_release;
1611         }
1612
1613         /* Data from ucode file:  header followed by uCode images */
1614         ucode = (void *)ucode_raw->data;
1615
1616         priv->ucode_ver = le32_to_cpu(ucode->ver);
1617         api_ver = IWL_UCODE_API(priv->ucode_ver);
1618         inst_size = le32_to_cpu(ucode->inst_size);
1619         data_size = le32_to_cpu(ucode->data_size);
1620         init_size = le32_to_cpu(ucode->init_size);
1621         init_data_size = le32_to_cpu(ucode->init_data_size);
1622         boot_size = le32_to_cpu(ucode->boot_size);
1623
1624         /* api_ver should match the api version forming part of the
1625          * firmware filename ... but we don't check for that and only rely
1626          * on the API version read from firware header from here on forward */
1627
1628         if (api_ver < api_min || api_ver > api_max) {
1629                 IWL_ERROR("Driver unable to support your firmware API. "
1630                           "Driver supports v%u, firmware is v%u.\n",
1631                           api_max, api_ver);
1632                 priv->ucode_ver = 0;
1633                 ret = -EINVAL;
1634                 goto err_release;
1635         }
1636         if (api_ver != api_max)
1637                 IWL_ERROR("Firmware has old API version. Expected v%u, "
1638                           "got v%u. New firmware can be obtained "
1639                           "from http://www.intellinuxwireless.org.\n",
1640                           api_max, api_ver);
1641
1642         printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
1643                        IWL_UCODE_MAJOR(priv->ucode_ver),
1644                        IWL_UCODE_MINOR(priv->ucode_ver),
1645                        IWL_UCODE_API(priv->ucode_ver),
1646                        IWL_UCODE_SERIAL(priv->ucode_ver));
1647
1648         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1649                        priv->ucode_ver);
1650         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1651                        inst_size);
1652         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1653                        data_size);
1654         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1655                        init_size);
1656         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1657                        init_data_size);
1658         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1659                        boot_size);
1660
1661         /* Verify size of file vs. image size info in file's header */
1662         if (ucode_raw->size < sizeof(*ucode) +
1663                 inst_size + data_size + init_size +
1664                 init_data_size + boot_size) {
1665
1666                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1667                                (int)ucode_raw->size);
1668                 ret = -EINVAL;
1669                 goto err_release;
1670         }
1671
1672         /* Verify that uCode images will fit in card's SRAM */
1673         if (inst_size > priv->hw_params.max_inst_size) {
1674                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1675                                inst_size);
1676                 ret = -EINVAL;
1677                 goto err_release;
1678         }
1679
1680         if (data_size > priv->hw_params.max_data_size) {
1681                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1682                                 data_size);
1683                 ret = -EINVAL;
1684                 goto err_release;
1685         }
1686         if (init_size > priv->hw_params.max_inst_size) {
1687                 IWL_DEBUG_INFO
1688                     ("uCode init instr len %d too large to fit in\n",
1689                       init_size);
1690                 ret = -EINVAL;
1691                 goto err_release;
1692         }
1693         if (init_data_size > priv->hw_params.max_data_size) {
1694                 IWL_DEBUG_INFO
1695                     ("uCode init data len %d too large to fit in\n",
1696                       init_data_size);
1697                 ret = -EINVAL;
1698                 goto err_release;
1699         }
1700         if (boot_size > priv->hw_params.max_bsm_size) {
1701                 IWL_DEBUG_INFO
1702                     ("uCode boot instr len %d too large to fit in\n",
1703                       boot_size);
1704                 ret = -EINVAL;
1705                 goto err_release;
1706         }
1707
1708         /* Allocate ucode buffers for card's bus-master loading ... */
1709
1710         /* Runtime instructions and 2 copies of data:
1711          * 1) unmodified from disk
1712          * 2) backup cache for save/restore during power-downs */
1713         priv->ucode_code.len = inst_size;
1714         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1715
1716         priv->ucode_data.len = data_size;
1717         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1718
1719         priv->ucode_data_backup.len = data_size;
1720         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1721
1722         /* Initialization instructions and data */
1723         if (init_size && init_data_size) {
1724                 priv->ucode_init.len = init_size;
1725                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1726
1727                 priv->ucode_init_data.len = init_data_size;
1728                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1729
1730                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1731                         goto err_pci_alloc;
1732         }
1733
1734         /* Bootstrap (instructions only, no data) */
1735         if (boot_size) {
1736                 priv->ucode_boot.len = boot_size;
1737                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1738
1739                 if (!priv->ucode_boot.v_addr)
1740                         goto err_pci_alloc;
1741         }
1742
1743         /* Copy images into buffers for card's bus-master reads ... */
1744
1745         /* Runtime instructions (first block of data in file) */
1746         src = &ucode->data[0];
1747         len = priv->ucode_code.len;
1748         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1749         memcpy(priv->ucode_code.v_addr, src, len);
1750         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1751                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1752
1753         /* Runtime data (2nd block)
1754          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1755         src = &ucode->data[inst_size];
1756         len = priv->ucode_data.len;
1757         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1758         memcpy(priv->ucode_data.v_addr, src, len);
1759         memcpy(priv->ucode_data_backup.v_addr, src, len);
1760
1761         /* Initialization instructions (3rd block) */
1762         if (init_size) {
1763                 src = &ucode->data[inst_size + data_size];
1764                 len = priv->ucode_init.len;
1765                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1766                                 len);
1767                 memcpy(priv->ucode_init.v_addr, src, len);
1768         }
1769
1770         /* Initialization data (4th block) */
1771         if (init_data_size) {
1772                 src = &ucode->data[inst_size + data_size + init_size];
1773                 len = priv->ucode_init_data.len;
1774                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1775                                len);
1776                 memcpy(priv->ucode_init_data.v_addr, src, len);
1777         }
1778
1779         /* Bootstrap instructions (5th block) */
1780         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1781         len = priv->ucode_boot.len;
1782         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1783         memcpy(priv->ucode_boot.v_addr, src, len);
1784
1785         /* We have our copies now, allow OS release its copies */
1786         release_firmware(ucode_raw);
1787         return 0;
1788
1789  err_pci_alloc:
1790         IWL_ERROR("failed to allocate pci memory\n");
1791         ret = -ENOMEM;
1792         iwl_dealloc_ucode_pci(priv);
1793
1794  err_release:
1795         release_firmware(ucode_raw);
1796
1797  error:
1798         return ret;
1799 }
1800
1801 /* temporary */
1802 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1803                                  struct sk_buff *skb);
1804
1805 /**
1806  * iwl_alive_start - called after REPLY_ALIVE notification received
1807  *                   from protocol/runtime uCode (initialization uCode's
1808  *                   Alive gets handled by iwl_init_alive_start()).
1809  */
1810 static void iwl_alive_start(struct iwl_priv *priv)
1811 {
1812         int ret = 0;
1813
1814         IWL_DEBUG_INFO("Runtime Alive received.\n");
1815
1816         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1817                 /* We had an error bringing up the hardware, so take it
1818                  * all the way back down so we can try again */
1819                 IWL_DEBUG_INFO("Alive failed.\n");
1820                 goto restart;
1821         }
1822
1823         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1824          * This is a paranoid check, because we would not have gotten the
1825          * "runtime" alive if code weren't properly loaded.  */
1826         if (iwl_verify_ucode(priv)) {
1827                 /* Runtime instruction load was bad;
1828                  * take it all the way back down so we can try again */
1829                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1830                 goto restart;
1831         }
1832
1833         iwl_clear_stations_table(priv);
1834         ret = priv->cfg->ops->lib->alive_notify(priv);
1835         if (ret) {
1836                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1837                             ret);
1838                 goto restart;
1839         }
1840
1841         /* After the ALIVE response, we can send host commands to the uCode */
1842         set_bit(STATUS_ALIVE, &priv->status);
1843
1844         if (iwl_is_rfkill(priv))
1845                 return;
1846
1847         ieee80211_wake_queues(priv->hw);
1848
1849         priv->active_rate = priv->rates_mask;
1850         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1851
1852         if (iwl_is_associated(priv)) {
1853                 struct iwl_rxon_cmd *active_rxon =
1854                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1855
1856                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1857                        sizeof(priv->staging_rxon));
1858                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1859         } else {
1860                 /* Initialize our rx_config data */
1861                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1862                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1863         }
1864
1865         /* Configure Bluetooth device coexistence support */
1866         iwl_send_bt_config(priv);
1867
1868         iwl_reset_run_time_calib(priv);
1869
1870         /* Configure the adapter for unassociated operation */
1871         iwl_commit_rxon(priv);
1872
1873         /* At this point, the NIC is initialized and operational */
1874         iwl_rf_kill_ct_config(priv);
1875
1876         iwl_leds_register(priv);
1877
1878         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1879         set_bit(STATUS_READY, &priv->status);
1880         wake_up_interruptible(&priv->wait_command_queue);
1881
1882         if (priv->error_recovering)
1883                 iwl_error_recovery(priv);
1884
1885         iwl_power_update_mode(priv, 1);
1886
1887         /* reassociate for ADHOC mode */
1888         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1889                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1890                                                                 priv->vif);
1891                 if (beacon)
1892                         iwl_mac_beacon_update(priv->hw, beacon);
1893         }
1894
1895
1896         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1897                 iwl_set_mode(priv, priv->iw_mode);
1898
1899         return;
1900
1901  restart:
1902         queue_work(priv->workqueue, &priv->restart);
1903 }
1904
1905 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1906
1907 static void __iwl_down(struct iwl_priv *priv)
1908 {
1909         unsigned long flags;
1910         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1911
1912         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1913
1914         if (!exit_pending)
1915                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1916
1917         iwl_leds_unregister(priv);
1918
1919         iwl_clear_stations_table(priv);
1920
1921         /* Unblock any waiting calls */
1922         wake_up_interruptible_all(&priv->wait_command_queue);
1923
1924         /* Wipe out the EXIT_PENDING status bit if we are not actually
1925          * exiting the module */
1926         if (!exit_pending)
1927                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1928
1929         /* stop and reset the on-board processor */
1930         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1931
1932         /* tell the device to stop sending interrupts */
1933         spin_lock_irqsave(&priv->lock, flags);
1934         iwl_disable_interrupts(priv);
1935         spin_unlock_irqrestore(&priv->lock, flags);
1936         iwl_synchronize_irq(priv);
1937
1938         if (priv->mac80211_registered)
1939                 ieee80211_stop_queues(priv->hw);
1940
1941         /* If we have not previously called iwl_init() then
1942          * clear all bits but the RF Kill and SUSPEND bits and return */
1943         if (!iwl_is_init(priv)) {
1944                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1945                                         STATUS_RF_KILL_HW |
1946                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1947                                         STATUS_RF_KILL_SW |
1948                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1949                                         STATUS_GEO_CONFIGURED |
1950                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1951                                         STATUS_IN_SUSPEND |
1952                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1953                                         STATUS_EXIT_PENDING;
1954                 goto exit;
1955         }
1956
1957         /* ...otherwise clear out all the status bits but the RF Kill and
1958          * SUSPEND bits and continue taking the NIC down. */
1959         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1960                                 STATUS_RF_KILL_HW |
1961                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1962                                 STATUS_RF_KILL_SW |
1963                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1964                                 STATUS_GEO_CONFIGURED |
1965                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1966                                 STATUS_IN_SUSPEND |
1967                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1968                                 STATUS_FW_ERROR |
1969                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1970                                 STATUS_EXIT_PENDING;
1971
1972         spin_lock_irqsave(&priv->lock, flags);
1973         iwl_clear_bit(priv, CSR_GP_CNTRL,
1974                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1975         spin_unlock_irqrestore(&priv->lock, flags);
1976
1977         iwl_txq_ctx_stop(priv);
1978         iwl_rxq_stop(priv);
1979
1980         spin_lock_irqsave(&priv->lock, flags);
1981         if (!iwl_grab_nic_access(priv)) {
1982                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1983                                          APMG_CLK_VAL_DMA_CLK_RQT);
1984                 iwl_release_nic_access(priv);
1985         }
1986         spin_unlock_irqrestore(&priv->lock, flags);
1987
1988         udelay(5);
1989
1990         /* FIXME: apm_ops.suspend(priv) */
1991         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1992                 priv->cfg->ops->lib->apm_ops.stop(priv);
1993         else
1994                 priv->cfg->ops->lib->apm_ops.reset(priv);
1995  exit:
1996         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1997
1998         if (priv->ibss_beacon)
1999                 dev_kfree_skb(priv->ibss_beacon);
2000         priv->ibss_beacon = NULL;
2001
2002         /* clear out any free frames */
2003         iwl_clear_free_frames(priv);
2004 }
2005
2006 static void iwl_down(struct iwl_priv *priv)
2007 {
2008         mutex_lock(&priv->mutex);
2009         __iwl_down(priv);
2010         mutex_unlock(&priv->mutex);
2011
2012         iwl_cancel_deferred_work(priv);
2013 }
2014
2015 #define MAX_HW_RESTARTS 5
2016
2017 static int __iwl_up(struct iwl_priv *priv)
2018 {
2019         int i;
2020         int ret;
2021
2022         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2023                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2024                 return -EIO;
2025         }
2026
2027         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2028                 IWL_ERROR("ucode not available for device bringup\n");
2029                 return -EIO;
2030         }
2031
2032         /* If platform's RF_KILL switch is NOT set to KILL */
2033         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2034                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2035         else
2036                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2037
2038         if (iwl_is_rfkill(priv)) {
2039                 iwl_enable_interrupts(priv);
2040                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2041                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2042                 return 0;
2043         }
2044
2045         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2046
2047         ret = iwl_hw_nic_init(priv);
2048         if (ret) {
2049                 IWL_ERROR("Unable to init nic\n");
2050                 return ret;
2051         }
2052
2053         /* make sure rfkill handshake bits are cleared */
2054         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2055         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2056                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2057
2058         /* clear (again), then enable host interrupts */
2059         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2060         iwl_enable_interrupts(priv);
2061
2062         /* really make sure rfkill handshake bits are cleared */
2063         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2064         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2065
2066         /* Copy original ucode data image from disk into backup cache.
2067          * This will be used to initialize the on-board processor's
2068          * data SRAM for a clean start when the runtime program first loads. */
2069         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2070                priv->ucode_data.len);
2071
2072         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2073
2074                 iwl_clear_stations_table(priv);
2075
2076                 /* load bootstrap state machine,
2077                  * load bootstrap program into processor's memory,
2078                  * prepare to load the "initialize" uCode */
2079                 ret = priv->cfg->ops->lib->load_ucode(priv);
2080
2081                 if (ret) {
2082                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2083                         continue;
2084                 }
2085
2086                 /* Clear out the uCode error bit if it is set */
2087                 clear_bit(STATUS_FW_ERROR, &priv->status);
2088
2089                 /* start card; "initialize" will load runtime ucode */
2090                 iwl_nic_start(priv);
2091
2092                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2093
2094                 return 0;
2095         }
2096
2097         set_bit(STATUS_EXIT_PENDING, &priv->status);
2098         __iwl_down(priv);
2099         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2100
2101         /* tried to restart and config the device for as long as our
2102          * patience could withstand */
2103         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2104         return -EIO;
2105 }
2106
2107
2108 /*****************************************************************************
2109  *
2110  * Workqueue callbacks
2111  *
2112  *****************************************************************************/
2113
2114 static void iwl_bg_init_alive_start(struct work_struct *data)
2115 {
2116         struct iwl_priv *priv =
2117             container_of(data, struct iwl_priv, init_alive_start.work);
2118
2119         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2120                 return;
2121
2122         mutex_lock(&priv->mutex);
2123         priv->cfg->ops->lib->init_alive_start(priv);
2124         mutex_unlock(&priv->mutex);
2125 }
2126
2127 static void iwl_bg_alive_start(struct work_struct *data)
2128 {
2129         struct iwl_priv *priv =
2130             container_of(data, struct iwl_priv, alive_start.work);
2131
2132         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2133                 return;
2134
2135         mutex_lock(&priv->mutex);
2136         iwl_alive_start(priv);
2137         mutex_unlock(&priv->mutex);
2138 }
2139
2140 static void iwl_bg_rf_kill(struct work_struct *work)
2141 {
2142         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2143
2144         wake_up_interruptible(&priv->wait_command_queue);
2145
2146         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2147                 return;
2148
2149         mutex_lock(&priv->mutex);
2150
2151         if (!iwl_is_rfkill(priv)) {
2152                 IWL_DEBUG(IWL_DL_RF_KILL,
2153                           "HW and/or SW RF Kill no longer active, restarting "
2154                           "device\n");
2155                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2156                         queue_work(priv->workqueue, &priv->restart);
2157         } else {
2158                 /* make sure mac80211 stop sending Tx frame */
2159                 if (priv->mac80211_registered)
2160                         ieee80211_stop_queues(priv->hw);
2161
2162                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2163                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2164                                           "disabled by SW switch\n");
2165                 else
2166                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2167                                     "Kill switch must be turned off for "
2168                                     "wireless networking to work.\n");
2169         }
2170         mutex_unlock(&priv->mutex);
2171         iwl_rfkill_set_hw_state(priv);
2172 }
2173
2174 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2175 {
2176         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2177                         run_time_calib_work);
2178
2179         mutex_lock(&priv->mutex);
2180
2181         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2182             test_bit(STATUS_SCANNING, &priv->status)) {
2183                 mutex_unlock(&priv->mutex);
2184                 return;
2185         }
2186
2187         if (priv->start_calib) {
2188                 iwl_chain_noise_calibration(priv, &priv->statistics);
2189
2190                 iwl_sensitivity_calibration(priv, &priv->statistics);
2191         }
2192
2193         mutex_unlock(&priv->mutex);
2194         return;
2195 }
2196
2197 static void iwl_bg_up(struct work_struct *data)
2198 {
2199         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2200
2201         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2202                 return;
2203
2204         mutex_lock(&priv->mutex);
2205         __iwl_up(priv);
2206         mutex_unlock(&priv->mutex);
2207         iwl_rfkill_set_hw_state(priv);
2208 }
2209
2210 static void iwl_bg_restart(struct work_struct *data)
2211 {
2212         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2213
2214         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2215                 return;
2216
2217         iwl_down(priv);
2218         queue_work(priv->workqueue, &priv->up);
2219 }
2220
2221 static void iwl_bg_rx_replenish(struct work_struct *data)
2222 {
2223         struct iwl_priv *priv =
2224             container_of(data, struct iwl_priv, rx_replenish);
2225
2226         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2227                 return;
2228
2229         mutex_lock(&priv->mutex);
2230         iwl_rx_replenish(priv);
2231         mutex_unlock(&priv->mutex);
2232 }
2233
2234 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2235
2236 static void iwl_post_associate(struct iwl_priv *priv)
2237 {
2238         struct ieee80211_conf *conf = NULL;
2239         int ret = 0;
2240         unsigned long flags;
2241
2242         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2243                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2244                 return;
2245         }
2246
2247         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2248                         priv->assoc_id, priv->active_rxon.bssid_addr);
2249
2250
2251         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2252                 return;
2253
2254
2255         if (!priv->vif || !priv->is_open)
2256                 return;
2257
2258         iwl_power_cancel_timeout(priv);
2259         iwl_scan_cancel_timeout(priv, 200);
2260
2261         conf = ieee80211_get_hw_conf(priv->hw);
2262
2263         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2264         iwl_commit_rxon(priv);
2265
2266         iwl_setup_rxon_timing(priv);
2267         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2268                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2269         if (ret)
2270                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2271                             "Attempting to continue.\n");
2272
2273         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2274
2275         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2276
2277         iwl_set_rxon_chain(priv);
2278         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2279
2280         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2281                         priv->assoc_id, priv->beacon_int);
2282
2283         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2284                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2285         else
2286                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2287
2288         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2289                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2290                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2291                 else
2292                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2293
2294                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2295                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2296
2297         }
2298
2299         iwl_commit_rxon(priv);
2300
2301         switch (priv->iw_mode) {
2302         case NL80211_IFTYPE_STATION:
2303                 break;
2304
2305         case NL80211_IFTYPE_ADHOC:
2306
2307                 /* assume default assoc id */
2308                 priv->assoc_id = 1;
2309
2310                 iwl_rxon_add_station(priv, priv->bssid, 0);
2311                 iwl_send_beacon_cmd(priv);
2312
2313                 break;
2314
2315         default:
2316                 IWL_ERROR("%s Should not be called in %d mode\n",
2317                           __func__, priv->iw_mode);
2318                 break;
2319         }
2320
2321         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2322                 priv->assoc_station_added = 1;
2323
2324         spin_lock_irqsave(&priv->lock, flags);
2325         iwl_activate_qos(priv, 0);
2326         spin_unlock_irqrestore(&priv->lock, flags);
2327
2328         /* the chain noise calibration will enabled PM upon completion
2329          * If chain noise has already been run, then we need to enable
2330          * power management here */
2331         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2332                 iwl_power_enable_management(priv);
2333
2334         /* Enable Rx differential gain and sensitivity calibrations */
2335         iwl_chain_noise_reset(priv);
2336         priv->start_calib = 1;
2337
2338 }
2339
2340 /*****************************************************************************
2341  *
2342  * mac80211 entry point functions
2343  *
2344  *****************************************************************************/
2345
2346 #define UCODE_READY_TIMEOUT     (4 * HZ)
2347
2348 static int iwl_mac_start(struct ieee80211_hw *hw)
2349 {
2350         struct iwl_priv *priv = hw->priv;
2351         int ret;
2352         u16 pci_cmd;
2353
2354         IWL_DEBUG_MAC80211("enter\n");
2355
2356         if (pci_enable_device(priv->pci_dev)) {
2357                 IWL_ERROR("Fail to pci_enable_device\n");
2358                 return -ENODEV;
2359         }
2360         pci_restore_state(priv->pci_dev);
2361         pci_enable_msi(priv->pci_dev);
2362
2363         /* enable interrupts if needed: hw bug w/a */
2364         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2365         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2366                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2367                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2368         }
2369
2370         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2371                           DRV_NAME, priv);
2372         if (ret) {
2373                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2374                 goto out_disable_msi;
2375         }
2376
2377         /* we should be verifying the device is ready to be opened */
2378         mutex_lock(&priv->mutex);
2379
2380         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2381         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2382          * ucode filename and max sizes are card-specific. */
2383
2384         if (!priv->ucode_code.len) {
2385                 ret = iwl_read_ucode(priv);
2386                 if (ret) {
2387                         IWL_ERROR("Could not read microcode: %d\n", ret);
2388                         mutex_unlock(&priv->mutex);
2389                         goto out_release_irq;
2390                 }
2391         }
2392
2393         ret = __iwl_up(priv);
2394
2395         mutex_unlock(&priv->mutex);
2396
2397         iwl_rfkill_set_hw_state(priv);
2398
2399         if (ret)
2400                 goto out_release_irq;
2401
2402         if (iwl_is_rfkill(priv))
2403                 goto out;
2404
2405         IWL_DEBUG_INFO("Start UP work done.\n");
2406
2407         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2408                 return 0;
2409
2410         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2411          * mac80211 will not be run successfully. */
2412         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2413                         test_bit(STATUS_READY, &priv->status),
2414                         UCODE_READY_TIMEOUT);
2415         if (!ret) {
2416                 if (!test_bit(STATUS_READY, &priv->status)) {
2417                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2418                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2419                         ret = -ETIMEDOUT;
2420                         goto out_release_irq;
2421                 }
2422         }
2423
2424 out:
2425         priv->is_open = 1;
2426         IWL_DEBUG_MAC80211("leave\n");
2427         return 0;
2428
2429 out_release_irq:
2430         free_irq(priv->pci_dev->irq, priv);
2431 out_disable_msi:
2432         pci_disable_msi(priv->pci_dev);
2433         pci_disable_device(priv->pci_dev);
2434         priv->is_open = 0;
2435         IWL_DEBUG_MAC80211("leave - failed\n");
2436         return ret;
2437 }
2438
2439 static void iwl_mac_stop(struct ieee80211_hw *hw)
2440 {
2441         struct iwl_priv *priv = hw->priv;
2442
2443         IWL_DEBUG_MAC80211("enter\n");
2444
2445         if (!priv->is_open) {
2446                 IWL_DEBUG_MAC80211("leave - skip\n");
2447                 return;
2448         }
2449
2450         priv->is_open = 0;
2451
2452         if (iwl_is_ready_rf(priv)) {
2453                 /* stop mac, cancel any scan request and clear
2454                  * RXON_FILTER_ASSOC_MSK BIT
2455                  */
2456                 mutex_lock(&priv->mutex);
2457                 iwl_scan_cancel_timeout(priv, 100);
2458                 mutex_unlock(&priv->mutex);
2459         }
2460
2461         iwl_down(priv);
2462
2463         flush_workqueue(priv->workqueue);
2464         free_irq(priv->pci_dev->irq, priv);
2465         pci_disable_msi(priv->pci_dev);
2466         pci_save_state(priv->pci_dev);
2467         pci_disable_device(priv->pci_dev);
2468
2469         IWL_DEBUG_MAC80211("leave\n");
2470 }
2471
2472 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2473 {
2474         struct iwl_priv *priv = hw->priv;
2475
2476         IWL_DEBUG_MACDUMP("enter\n");
2477
2478         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2479                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2480
2481         if (iwl_tx_skb(priv, skb))
2482                 dev_kfree_skb_any(skb);
2483
2484         IWL_DEBUG_MACDUMP("leave\n");
2485         return NETDEV_TX_OK;
2486 }
2487
2488 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2489                                  struct ieee80211_if_init_conf *conf)
2490 {
2491         struct iwl_priv *priv = hw->priv;
2492         unsigned long flags;
2493
2494         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2495
2496         if (priv->vif) {
2497                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2498                 return -EOPNOTSUPP;
2499         }
2500
2501         spin_lock_irqsave(&priv->lock, flags);
2502         priv->vif = conf->vif;
2503         priv->iw_mode = conf->type;
2504
2505         spin_unlock_irqrestore(&priv->lock, flags);
2506
2507         mutex_lock(&priv->mutex);
2508
2509         if (conf->mac_addr) {
2510                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2511                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2512         }
2513
2514         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2515                 /* we are not ready, will run again when ready */
2516                 set_bit(STATUS_MODE_PENDING, &priv->status);
2517
2518         mutex_unlock(&priv->mutex);
2519
2520         IWL_DEBUG_MAC80211("leave\n");
2521         return 0;
2522 }
2523
2524 /**
2525  * iwl_mac_config - mac80211 config callback
2526  *
2527  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2528  * be set inappropriately and the driver currently sets the hardware up to
2529  * use it whenever needed.
2530  */
2531 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2532 {
2533         struct iwl_priv *priv = hw->priv;
2534         const struct iwl_channel_info *ch_info;
2535         struct ieee80211_conf *conf = &hw->conf;
2536         unsigned long flags;
2537         int ret = 0;
2538         u16 channel;
2539
2540         mutex_lock(&priv->mutex);
2541         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2542
2543         priv->current_ht_config.is_ht = conf->ht.enabled;
2544
2545         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2546                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2547                 goto out;
2548         }
2549
2550         if (!conf->radio_enabled)
2551                 iwl_radio_kill_sw_disable_radio(priv);
2552
2553         if (!iwl_is_ready(priv)) {
2554                 IWL_DEBUG_MAC80211("leave - not ready\n");
2555                 ret = -EIO;
2556                 goto out;
2557         }
2558
2559         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2560                      test_bit(STATUS_SCANNING, &priv->status))) {
2561                 IWL_DEBUG_MAC80211("leave - scanning\n");
2562                 mutex_unlock(&priv->mutex);
2563                 return 0;
2564         }
2565
2566         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2567         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2568         if (!is_channel_valid(ch_info)) {
2569                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2570                 ret = -EINVAL;
2571                 goto out;
2572         }
2573
2574         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2575             !is_channel_ibss(ch_info)) {
2576                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2577                         conf->channel->hw_value, conf->channel->band);
2578                 ret = -EINVAL;
2579                 goto out;
2580         }
2581
2582         spin_lock_irqsave(&priv->lock, flags);
2583
2584
2585         /* if we are switching from ht to 2.4 clear flags
2586          * from any ht related info since 2.4 does not
2587          * support ht */
2588         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2589 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2590             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2591 #endif
2592         )
2593                 priv->staging_rxon.flags = 0;
2594
2595         iwl_set_rxon_channel(priv, conf->channel);
2596
2597         iwl_set_flags_for_band(priv, conf->channel->band);
2598
2599         /* The list of supported rates and rate mask can be different
2600          * for each band; since the band may have changed, reset
2601          * the rate mask to what mac80211 lists */
2602         iwl_set_rate(priv);
2603
2604         spin_unlock_irqrestore(&priv->lock, flags);
2605
2606 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2607         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2608                 iwl_hw_channel_switch(priv, conf->channel);
2609                 goto out;
2610         }
2611 #endif
2612
2613         if (!conf->radio_enabled) {
2614                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2615                 goto out;
2616         }
2617
2618         if (iwl_is_rfkill(priv)) {
2619                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2620                 ret = -EIO;
2621                 goto out;
2622         }
2623
2624         if (conf->flags & IEEE80211_CONF_PS)
2625                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2626         else
2627                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2628         if (ret)
2629                 IWL_DEBUG_MAC80211("Error setting power level\n");
2630
2631         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2632                            priv->tx_power_user_lmt, conf->power_level);
2633
2634         iwl_set_tx_power(priv, conf->power_level, false);
2635
2636         iwl_set_rate(priv);
2637
2638         if (memcmp(&priv->active_rxon,
2639                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2640                 iwl_commit_rxon(priv);
2641         else
2642                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2643
2644         IWL_DEBUG_MAC80211("leave\n");
2645
2646 out:
2647         mutex_unlock(&priv->mutex);
2648         return ret;
2649 }
2650
2651 static void iwl_config_ap(struct iwl_priv *priv)
2652 {
2653         int ret = 0;
2654         unsigned long flags;
2655
2656         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2657                 return;
2658
2659         /* The following should be done only at AP bring up */
2660         if (!iwl_is_associated(priv)) {
2661
2662                 /* RXON - unassoc (to set timing command) */
2663                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2664                 iwl_commit_rxon(priv);
2665
2666                 /* RXON Timing */
2667                 iwl_setup_rxon_timing(priv);
2668                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2669                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2670                 if (ret)
2671                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2672                                         "Attempting to continue.\n");
2673
2674                 iwl_set_rxon_chain(priv);
2675
2676                 /* FIXME: what should be the assoc_id for AP? */
2677                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2678                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2679                         priv->staging_rxon.flags |=
2680                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2681                 else
2682                         priv->staging_rxon.flags &=
2683                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2684
2685                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2686                         if (priv->assoc_capability &
2687                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2688                                 priv->staging_rxon.flags |=
2689                                         RXON_FLG_SHORT_SLOT_MSK;
2690                         else
2691                                 priv->staging_rxon.flags &=
2692                                         ~RXON_FLG_SHORT_SLOT_MSK;
2693
2694                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2695                                 priv->staging_rxon.flags &=
2696                                         ~RXON_FLG_SHORT_SLOT_MSK;
2697                 }
2698                 /* restore RXON assoc */
2699                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2700                 iwl_commit_rxon(priv);
2701                 spin_lock_irqsave(&priv->lock, flags);
2702                 iwl_activate_qos(priv, 1);
2703                 spin_unlock_irqrestore(&priv->lock, flags);
2704                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2705         }
2706         iwl_send_beacon_cmd(priv);
2707
2708         /* FIXME - we need to add code here to detect a totally new
2709          * configuration, reset the AP, unassoc, rxon timing, assoc,
2710          * clear sta table, add BCAST sta... */
2711 }
2712
2713
2714 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2715                                         struct ieee80211_vif *vif,
2716                                     struct ieee80211_if_conf *conf)
2717 {
2718         struct iwl_priv *priv = hw->priv;
2719         int rc;
2720
2721         if (conf == NULL)
2722                 return -EIO;
2723
2724         if (priv->vif != vif) {
2725                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2726                 return 0;
2727         }
2728
2729         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2730             conf->changed & IEEE80211_IFCC_BEACON) {
2731                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2732                 if (!beacon)
2733                         return -ENOMEM;
2734                 mutex_lock(&priv->mutex);
2735                 rc = iwl_mac_beacon_update(hw, beacon);
2736                 mutex_unlock(&priv->mutex);
2737                 if (rc)
2738                         return rc;
2739         }
2740
2741         if (!iwl_is_alive(priv))
2742                 return -EAGAIN;
2743
2744         mutex_lock(&priv->mutex);
2745
2746         if (conf->bssid)
2747                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2748
2749 /*
2750  * very dubious code was here; the probe filtering flag is never set:
2751  *
2752         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2753             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2754  */
2755
2756         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2757                 if (!conf->bssid) {
2758                         conf->bssid = priv->mac_addr;
2759                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2760                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2761                                            conf->bssid);
2762                 }
2763                 if (priv->ibss_beacon)
2764                         dev_kfree_skb(priv->ibss_beacon);
2765
2766                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2767         }
2768
2769         if (iwl_is_rfkill(priv))
2770                 goto done;
2771
2772         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2773             !is_multicast_ether_addr(conf->bssid)) {
2774                 /* If there is currently a HW scan going on in the background
2775                  * then we need to cancel it else the RXON below will fail. */
2776                 if (iwl_scan_cancel_timeout(priv, 100)) {
2777                         IWL_WARNING("Aborted scan still in progress "
2778                                     "after 100ms\n");
2779                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2780                         mutex_unlock(&priv->mutex);
2781                         return -EAGAIN;
2782                 }
2783                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2784
2785                 /* TODO: Audit driver for usage of these members and see
2786                  * if mac80211 deprecates them (priv->bssid looks like it
2787                  * shouldn't be there, but I haven't scanned the IBSS code
2788                  * to verify) - jpk */
2789                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2790
2791                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2792                         iwl_config_ap(priv);
2793                 else {
2794                         rc = iwl_commit_rxon(priv);
2795                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2796                                 iwl_rxon_add_station(
2797                                         priv, priv->active_rxon.bssid_addr, 1);
2798                 }
2799
2800         } else {
2801                 iwl_scan_cancel_timeout(priv, 100);
2802                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2803                 iwl_commit_rxon(priv);
2804         }
2805
2806  done:
2807         IWL_DEBUG_MAC80211("leave\n");
2808         mutex_unlock(&priv->mutex);
2809
2810         return 0;
2811 }
2812
2813 static void iwl_configure_filter(struct ieee80211_hw *hw,
2814                                  unsigned int changed_flags,
2815                                  unsigned int *total_flags,
2816                                  int mc_count, struct dev_addr_list *mc_list)
2817 {
2818         struct iwl_priv *priv = hw->priv;
2819         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2820
2821         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2822                         changed_flags, *total_flags);
2823
2824         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2825                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2826                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2827                 else
2828                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2829         }
2830         if (changed_flags & FIF_ALLMULTI) {
2831                 if (*total_flags & FIF_ALLMULTI)
2832                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2833                 else
2834                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2835         }
2836         if (changed_flags & FIF_CONTROL) {
2837                 if (*total_flags & FIF_CONTROL)
2838                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2839                 else
2840                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2841         }
2842         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2843                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2844                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2845                 else
2846                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2847         }
2848
2849         /* We avoid iwl_commit_rxon here to commit the new filter flags
2850          * since mac80211 will call ieee80211_hw_config immediately.
2851          * (mc_list is not supported at this time). Otherwise, we need to
2852          * queue a background iwl_commit_rxon work.
2853          */
2854
2855         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2856                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2857 }
2858
2859 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2860                                      struct ieee80211_if_init_conf *conf)
2861 {
2862         struct iwl_priv *priv = hw->priv;
2863
2864         IWL_DEBUG_MAC80211("enter\n");
2865
2866         mutex_lock(&priv->mutex);
2867
2868         if (iwl_is_ready_rf(priv)) {
2869                 iwl_scan_cancel_timeout(priv, 100);
2870                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2871                 iwl_commit_rxon(priv);
2872         }
2873         if (priv->vif == conf->vif) {
2874                 priv->vif = NULL;
2875                 memset(priv->bssid, 0, ETH_ALEN);
2876         }
2877         mutex_unlock(&priv->mutex);
2878
2879         IWL_DEBUG_MAC80211("leave\n");
2880
2881 }
2882
2883 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2884 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2885                                      struct ieee80211_vif *vif,
2886                                      struct ieee80211_bss_conf *bss_conf,
2887                                      u32 changes)
2888 {
2889         struct iwl_priv *priv = hw->priv;
2890
2891         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2892
2893         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2894                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2895                                    bss_conf->use_short_preamble);
2896                 if (bss_conf->use_short_preamble)
2897                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2898                 else
2899                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2900         }
2901
2902         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2903                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2904                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2905                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2906                 else
2907                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2908         }
2909
2910         if (changes & BSS_CHANGED_HT) {
2911                 iwl_ht_conf(priv, bss_conf);
2912                 iwl_set_rxon_chain(priv);
2913         }
2914
2915         if (changes & BSS_CHANGED_ASSOC) {
2916                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2917                 /* This should never happen as this function should
2918                  * never be called from interrupt context. */
2919                 if (WARN_ON_ONCE(in_interrupt()))
2920                         return;
2921                 if (bss_conf->assoc) {
2922                         priv->assoc_id = bss_conf->aid;
2923                         priv->beacon_int = bss_conf->beacon_int;
2924                         priv->power_data.dtim_period = bss_conf->dtim_period;
2925                         priv->timestamp = bss_conf->timestamp;
2926                         priv->assoc_capability = bss_conf->assoc_capability;
2927
2928                         /* we have just associated, don't start scan too early
2929                          * leave time for EAPOL exchange to complete
2930                          */
2931                         priv->next_scan_jiffies = jiffies +
2932                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2933                         mutex_lock(&priv->mutex);
2934                         iwl_post_associate(priv);
2935                         mutex_unlock(&priv->mutex);
2936                 } else {
2937                         priv->assoc_id = 0;
2938                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2939                 }
2940         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2941                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2942                         iwl_send_rxon_assoc(priv);
2943         }
2944
2945 }
2946
2947 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2948 {
2949         unsigned long flags;
2950         struct iwl_priv *priv = hw->priv;
2951         int ret;
2952
2953         IWL_DEBUG_MAC80211("enter\n");
2954
2955         mutex_lock(&priv->mutex);
2956         spin_lock_irqsave(&priv->lock, flags);
2957
2958         if (!iwl_is_ready_rf(priv)) {
2959                 ret = -EIO;
2960                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2961                 goto out_unlock;
2962         }
2963
2964         /* We don't schedule scan within next_scan_jiffies period.
2965          * Avoid scanning during possible EAPOL exchange, return
2966          * success immediately.
2967          */
2968         if (priv->next_scan_jiffies &&
2969             time_after(priv->next_scan_jiffies, jiffies)) {
2970                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2971                 queue_work(priv->workqueue, &priv->scan_completed);
2972                 ret = 0;
2973                 goto out_unlock;
2974         }
2975
2976         /* if we just finished scan ask for delay */
2977         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2978             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2979                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2980                 queue_work(priv->workqueue, &priv->scan_completed);
2981                 ret = 0;
2982                 goto out_unlock;
2983         }
2984
2985         if (ssid_len) {
2986                 priv->one_direct_scan = 1;
2987                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2988                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2989         } else {
2990                 priv->one_direct_scan = 0;
2991         }
2992
2993         ret = iwl_scan_initiate(priv);
2994
2995         IWL_DEBUG_MAC80211("leave\n");
2996
2997 out_unlock:
2998         spin_unlock_irqrestore(&priv->lock, flags);
2999         mutex_unlock(&priv->mutex);
3000
3001         return ret;
3002 }
3003
3004 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3005                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3006                         u32 iv32, u16 *phase1key)
3007 {
3008
3009         struct iwl_priv *priv = hw->priv;
3010         IWL_DEBUG_MAC80211("enter\n");
3011
3012         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3013
3014         IWL_DEBUG_MAC80211("leave\n");
3015 }
3016
3017 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3018                            const u8 *local_addr, const u8 *addr,
3019                            struct ieee80211_key_conf *key)
3020 {
3021         struct iwl_priv *priv = hw->priv;
3022         int ret = 0;
3023         u8 sta_id = IWL_INVALID_STATION;
3024         u8 is_default_wep_key = 0;
3025
3026         IWL_DEBUG_MAC80211("enter\n");
3027
3028         if (priv->hw_params.sw_crypto) {
3029                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3030                 return -EOPNOTSUPP;
3031         }
3032
3033         if (is_zero_ether_addr(addr))
3034                 /* only support pairwise keys */
3035                 return -EOPNOTSUPP;
3036
3037         sta_id = iwl_find_station(priv, addr);
3038         if (sta_id == IWL_INVALID_STATION) {
3039                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3040                                    addr);
3041                 return -EINVAL;
3042
3043         }
3044
3045         mutex_lock(&priv->mutex);
3046         iwl_scan_cancel_timeout(priv, 100);
3047         mutex_unlock(&priv->mutex);
3048
3049         /* If we are getting WEP group key and we didn't receive any key mapping
3050          * so far, we are in legacy wep mode (group key only), otherwise we are
3051          * in 1X mode.
3052          * In legacy wep mode, we use another host command to the uCode */
3053         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3054                 priv->iw_mode != NL80211_IFTYPE_AP) {
3055                 if (cmd == SET_KEY)
3056                         is_default_wep_key = !priv->key_mapping_key;
3057                 else
3058                         is_default_wep_key =
3059                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3060         }
3061
3062         switch (cmd) {
3063         case SET_KEY:
3064                 if (is_default_wep_key)
3065                         ret = iwl_set_default_wep_key(priv, key);
3066                 else
3067                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3068
3069                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3070                 break;
3071         case DISABLE_KEY:
3072                 if (is_default_wep_key)
3073                         ret = iwl_remove_default_wep_key(priv, key);
3074                 else
3075                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3076
3077                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3078                 break;
3079         default:
3080                 ret = -EINVAL;
3081         }
3082
3083         IWL_DEBUG_MAC80211("leave\n");
3084
3085         return ret;
3086 }
3087
3088 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3089                            const struct ieee80211_tx_queue_params *params)
3090 {
3091         struct iwl_priv *priv = hw->priv;
3092         unsigned long flags;
3093         int q;
3094
3095         IWL_DEBUG_MAC80211("enter\n");
3096
3097         if (!iwl_is_ready_rf(priv)) {
3098                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3099                 return -EIO;
3100         }
3101
3102         if (queue >= AC_NUM) {
3103                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3104                 return 0;
3105         }
3106
3107         q = AC_NUM - 1 - queue;
3108
3109         spin_lock_irqsave(&priv->lock, flags);
3110
3111         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3112         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3113         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3114         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3115                         cpu_to_le16((params->txop * 32));
3116
3117         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3118         priv->qos_data.qos_active = 1;
3119
3120         if (priv->iw_mode == NL80211_IFTYPE_AP)
3121                 iwl_activate_qos(priv, 1);
3122         else if (priv->assoc_id && iwl_is_associated(priv))
3123                 iwl_activate_qos(priv, 0);
3124
3125         spin_unlock_irqrestore(&priv->lock, flags);
3126
3127         IWL_DEBUG_MAC80211("leave\n");
3128         return 0;
3129 }
3130
3131 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3132                              enum ieee80211_ampdu_mlme_action action,
3133                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3134 {
3135         struct iwl_priv *priv = hw->priv;
3136
3137         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3138                      sta->addr, tid);
3139
3140         if (!(priv->cfg->sku & IWL_SKU_N))
3141                 return -EACCES;
3142
3143         switch (action) {
3144         case IEEE80211_AMPDU_RX_START:
3145                 IWL_DEBUG_HT("start Rx\n");
3146                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3147         case IEEE80211_AMPDU_RX_STOP:
3148                 IWL_DEBUG_HT("stop Rx\n");
3149                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3150         case IEEE80211_AMPDU_TX_START:
3151                 IWL_DEBUG_HT("start Tx\n");
3152                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3153         case IEEE80211_AMPDU_TX_STOP:
3154                 IWL_DEBUG_HT("stop Tx\n");
3155                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3156         default:
3157                 IWL_DEBUG_HT("unknown\n");
3158                 return -EINVAL;
3159                 break;
3160         }
3161         return 0;
3162 }
3163
3164 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3165                                 struct ieee80211_tx_queue_stats *stats)
3166 {
3167         struct iwl_priv *priv = hw->priv;
3168         int i, avail;
3169         struct iwl_tx_queue *txq;
3170         struct iwl_queue *q;
3171         unsigned long flags;
3172
3173         IWL_DEBUG_MAC80211("enter\n");
3174
3175         if (!iwl_is_ready_rf(priv)) {
3176                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3177                 return -EIO;
3178         }
3179
3180         spin_lock_irqsave(&priv->lock, flags);
3181
3182         for (i = 0; i < AC_NUM; i++) {
3183                 txq = &priv->txq[i];
3184                 q = &txq->q;
3185                 avail = iwl_queue_space(q);
3186
3187                 stats[i].len = q->n_window - avail;
3188                 stats[i].limit = q->n_window - q->high_mark;
3189                 stats[i].count = q->n_window;
3190
3191         }
3192         spin_unlock_irqrestore(&priv->lock, flags);
3193
3194         IWL_DEBUG_MAC80211("leave\n");
3195
3196         return 0;
3197 }
3198
3199 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3200                              struct ieee80211_low_level_stats *stats)
3201 {
3202         struct iwl_priv *priv = hw->priv;
3203
3204         priv = hw->priv;
3205         IWL_DEBUG_MAC80211("enter\n");
3206         IWL_DEBUG_MAC80211("leave\n");
3207
3208         return 0;
3209 }
3210
3211 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3212 {
3213         struct iwl_priv *priv = hw->priv;
3214         unsigned long flags;
3215
3216         mutex_lock(&priv->mutex);
3217         IWL_DEBUG_MAC80211("enter\n");
3218
3219         spin_lock_irqsave(&priv->lock, flags);
3220         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3221         spin_unlock_irqrestore(&priv->lock, flags);
3222
3223         iwl_reset_qos(priv);
3224
3225         spin_lock_irqsave(&priv->lock, flags);
3226         priv->assoc_id = 0;
3227         priv->assoc_capability = 0;
3228         priv->assoc_station_added = 0;
3229
3230         /* new association get rid of ibss beacon skb */
3231         if (priv->ibss_beacon)
3232                 dev_kfree_skb(priv->ibss_beacon);
3233
3234         priv->ibss_beacon = NULL;
3235
3236         priv->beacon_int = priv->hw->conf.beacon_int;
3237         priv->timestamp = 0;
3238         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3239                 priv->beacon_int = 0;
3240
3241         spin_unlock_irqrestore(&priv->lock, flags);
3242
3243         if (!iwl_is_ready_rf(priv)) {
3244                 IWL_DEBUG_MAC80211("leave - not ready\n");
3245                 mutex_unlock(&priv->mutex);
3246                 return;
3247         }
3248
3249         /* we are restarting association process
3250          * clear RXON_FILTER_ASSOC_MSK bit
3251          */
3252         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3253                 iwl_scan_cancel_timeout(priv, 100);
3254                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3255                 iwl_commit_rxon(priv);
3256         }
3257
3258         iwl_power_update_mode(priv, 0);
3259
3260         /* Per mac80211.h: This is only used in IBSS mode... */
3261         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3262
3263                 /* switch to CAM during association period.
3264                  * the ucode will block any association/authentication
3265                  * frome during assiciation period if it can not hear
3266                  * the AP because of PM. the timer enable PM back is
3267                  * association do not complete
3268                  */
3269                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3270                                                      IEEE80211_CHAN_RADAR))
3271                                 iwl_power_disable_management(priv, 3000);
3272
3273                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3274                 mutex_unlock(&priv->mutex);
3275                 return;
3276         }
3277
3278         iwl_set_rate(priv);
3279
3280         mutex_unlock(&priv->mutex);
3281
3282         IWL_DEBUG_MAC80211("leave\n");
3283 }
3284
3285 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3286 {
3287         struct iwl_priv *priv = hw->priv;
3288         unsigned long flags;
3289         __le64 timestamp;
3290
3291         IWL_DEBUG_MAC80211("enter\n");
3292
3293         if (!iwl_is_ready_rf(priv)) {
3294                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3295                 return -EIO;
3296         }
3297
3298         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3299                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3300                 return -EIO;
3301         }
3302
3303         spin_lock_irqsave(&priv->lock, flags);
3304
3305         if (priv->ibss_beacon)
3306                 dev_kfree_skb(priv->ibss_beacon);
3307
3308         priv->ibss_beacon = skb;
3309
3310         priv->assoc_id = 0;
3311         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3312         priv->timestamp = le64_to_cpu(timestamp);
3313
3314         IWL_DEBUG_MAC80211("leave\n");
3315         spin_unlock_irqrestore(&priv->lock, flags);
3316
3317         iwl_reset_qos(priv);
3318
3319         iwl_post_associate(priv);
3320
3321
3322         return 0;
3323 }
3324
3325 /*****************************************************************************
3326  *
3327  * sysfs attributes
3328  *
3329  *****************************************************************************/
3330
3331 #ifdef CONFIG_IWLWIFI_DEBUG
3332
3333 /*
3334  * The following adds a new attribute to the sysfs representation
3335  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3336  * used for controlling the debug level.
3337  *
3338  * See the level definitions in iwl for details.
3339  */
3340
3341 static ssize_t show_debug_level(struct device *d,
3342                                 struct device_attribute *attr, char *buf)
3343 {
3344         struct iwl_priv *priv = d->driver_data;
3345
3346         return sprintf(buf, "0x%08X\n", priv->debug_level);
3347 }
3348 static ssize_t store_debug_level(struct device *d,
3349                                 struct device_attribute *attr,
3350                                  const char *buf, size_t count)
3351 {
3352         struct iwl_priv *priv = d->driver_data;
3353         unsigned long val;
3354         int ret;
3355
3356         ret = strict_strtoul(buf, 0, &val);
3357         if (ret)
3358                 printk(KERN_INFO DRV_NAME
3359                        ": %s is not in hex or decimal form.\n", buf);
3360         else
3361                 priv->debug_level = val;
3362
3363         return strnlen(buf, count);
3364 }
3365
3366 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3367                         show_debug_level, store_debug_level);
3368
3369
3370 #endif /* CONFIG_IWLWIFI_DEBUG */
3371
3372
3373 static ssize_t show_version(struct device *d,
3374                                 struct device_attribute *attr, char *buf)
3375 {
3376         struct iwl_priv *priv = d->driver_data;
3377         struct iwl_alive_resp *palive = &priv->card_alive;
3378         ssize_t pos = 0;
3379         u16 eeprom_ver;
3380
3381         if (palive->is_valid)
3382                 pos += sprintf(buf + pos,
3383                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3384                                 "fw type: 0x%01X 0x%01X\n",
3385                                 palive->ucode_major, palive->ucode_minor,
3386                                 palive->sw_rev[0], palive->sw_rev[1],
3387                                 palive->ver_type, palive->ver_subtype);
3388         else
3389                 pos += sprintf(buf + pos, "fw not loaded\n");
3390
3391         if (priv->eeprom) {
3392                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3393                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3394                                  eeprom_ver);
3395         } else {
3396                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3397         }
3398
3399         return pos;
3400 }
3401
3402 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3403
3404 static ssize_t show_temperature(struct device *d,
3405                                 struct device_attribute *attr, char *buf)
3406 {
3407         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3408
3409         if (!iwl_is_alive(priv))
3410                 return -EAGAIN;
3411
3412         return sprintf(buf, "%d\n", priv->temperature);
3413 }
3414
3415 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3416
3417 static ssize_t show_tx_power(struct device *d,
3418                              struct device_attribute *attr, char *buf)
3419 {
3420         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3421
3422         if (!iwl_is_ready_rf(priv))
3423                 return sprintf(buf, "off\n");
3424         else
3425                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3426 }
3427
3428 static ssize_t store_tx_power(struct device *d,
3429                               struct device_attribute *attr,
3430                               const char *buf, size_t count)
3431 {
3432         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3433         unsigned long val;
3434         int ret;
3435
3436         ret = strict_strtoul(buf, 10, &val);
3437         if (ret)
3438                 printk(KERN_INFO DRV_NAME
3439                        ": %s is not in decimal form.\n", buf);
3440         else
3441                 iwl_set_tx_power(priv, val, false);
3442
3443         return count;
3444 }
3445
3446 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3447
3448 static ssize_t show_flags(struct device *d,
3449                           struct device_attribute *attr, char *buf)
3450 {
3451         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3452
3453         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3454 }
3455
3456 static ssize_t store_flags(struct device *d,
3457                            struct device_attribute *attr,
3458                            const char *buf, size_t count)
3459 {
3460         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3461         unsigned long val;
3462         u32 flags;
3463         int ret = strict_strtoul(buf, 0, &val);
3464         if (ret)
3465                 return ret;
3466         flags = (u32)val;
3467
3468         mutex_lock(&priv->mutex);
3469         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3470                 /* Cancel any currently running scans... */
3471                 if (iwl_scan_cancel_timeout(priv, 100))
3472                         IWL_WARNING("Could not cancel scan.\n");
3473                 else {
3474                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3475                         priv->staging_rxon.flags = cpu_to_le32(flags);
3476                         iwl_commit_rxon(priv);
3477                 }
3478         }
3479         mutex_unlock(&priv->mutex);
3480
3481         return count;
3482 }
3483
3484 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3485
3486 static ssize_t show_filter_flags(struct device *d,
3487                                  struct device_attribute *attr, char *buf)
3488 {
3489         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3490
3491         return sprintf(buf, "0x%04X\n",
3492                 le32_to_cpu(priv->active_rxon.filter_flags));
3493 }
3494
3495 static ssize_t store_filter_flags(struct device *d,
3496                                   struct device_attribute *attr,
3497                                   const char *buf, size_t count)
3498 {
3499         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3500         unsigned long val;
3501         u32 filter_flags;
3502         int ret = strict_strtoul(buf, 0, &val);
3503         if (ret)
3504                 return ret;
3505         filter_flags = (u32)val;
3506
3507         mutex_lock(&priv->mutex);
3508         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3509                 /* Cancel any currently running scans... */
3510                 if (iwl_scan_cancel_timeout(priv, 100))
3511                         IWL_WARNING("Could not cancel scan.\n");
3512                 else {
3513                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3514                                        "0x%04X\n", filter_flags);
3515                         priv->staging_rxon.filter_flags =
3516                                 cpu_to_le32(filter_flags);
3517                         iwl_commit_rxon(priv);
3518                 }
3519         }
3520         mutex_unlock(&priv->mutex);
3521
3522         return count;
3523 }
3524
3525 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3526                    store_filter_flags);
3527
3528 static ssize_t store_retry_rate(struct device *d,
3529                                 struct device_attribute *attr,
3530                                 const char *buf, size_t count)
3531 {
3532         struct iwl_priv *priv = dev_get_drvdata(d);
3533         long val;
3534         int ret  = strict_strtol(buf, 10, &val);
3535         if (!ret)
3536                 return ret;
3537
3538         priv->retry_rate = (val > 0) ? val : 1;
3539
3540         return count;
3541 }
3542
3543 static ssize_t show_retry_rate(struct device *d,
3544                                struct device_attribute *attr, char *buf)
3545 {
3546         struct iwl_priv *priv = dev_get_drvdata(d);
3547         return sprintf(buf, "%d", priv->retry_rate);
3548 }
3549
3550 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3551                    store_retry_rate);
3552
3553 static ssize_t store_power_level(struct device *d,
3554                                  struct device_attribute *attr,
3555                                  const char *buf, size_t count)
3556 {
3557         struct iwl_priv *priv = dev_get_drvdata(d);
3558         int ret;
3559         unsigned long mode;
3560
3561
3562         mutex_lock(&priv->mutex);
3563
3564         if (!iwl_is_ready(priv)) {
3565                 ret = -EAGAIN;
3566                 goto out;
3567         }
3568
3569         ret = strict_strtoul(buf, 10, &mode);
3570         if (ret)
3571                 goto out;
3572
3573         ret = iwl_power_set_user_mode(priv, mode);
3574         if (ret) {
3575                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3576                 goto out;
3577         }
3578         ret = count;
3579
3580  out:
3581         mutex_unlock(&priv->mutex);
3582         return ret;
3583 }
3584
3585 static ssize_t show_power_level(struct device *d,
3586                                 struct device_attribute *attr, char *buf)
3587 {
3588         struct iwl_priv *priv = dev_get_drvdata(d);
3589         int mode = priv->power_data.user_power_setting;
3590         int system = priv->power_data.system_power_setting;
3591         int level = priv->power_data.power_mode;
3592         char *p = buf;
3593
3594         switch (system) {
3595         case IWL_POWER_SYS_AUTO:
3596                 p += sprintf(p, "SYSTEM:auto");
3597                 break;
3598         case IWL_POWER_SYS_AC:
3599                 p += sprintf(p, "SYSTEM:ac");
3600                 break;
3601         case IWL_POWER_SYS_BATTERY:
3602                 p += sprintf(p, "SYSTEM:battery");
3603                 break;
3604         }
3605
3606         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3607                         "fixed" : "auto");
3608         p += sprintf(p, "\tINDEX:%d", level);
3609         p += sprintf(p, "\n");
3610         return p - buf + 1;
3611 }
3612
3613 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3614                    store_power_level);
3615
3616
3617 static ssize_t show_statistics(struct device *d,
3618                                struct device_attribute *attr, char *buf)
3619 {
3620         struct iwl_priv *priv = dev_get_drvdata(d);
3621         u32 size = sizeof(struct iwl_notif_statistics);
3622         u32 len = 0, ofs = 0;
3623         u8 *data = (u8 *)&priv->statistics;
3624         int rc = 0;
3625
3626         if (!iwl_is_alive(priv))
3627                 return -EAGAIN;
3628
3629         mutex_lock(&priv->mutex);
3630         rc = iwl_send_statistics_request(priv, 0);
3631         mutex_unlock(&priv->mutex);
3632
3633         if (rc) {
3634                 len = sprintf(buf,
3635                               "Error sending statistics request: 0x%08X\n", rc);
3636                 return len;
3637         }
3638
3639         while (size && (PAGE_SIZE - len)) {
3640                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3641                                    PAGE_SIZE - len, 1);
3642                 len = strlen(buf);
3643                 if (PAGE_SIZE - len)
3644                         buf[len++] = '\n';
3645
3646                 ofs += 16;
3647                 size -= min(size, 16U);
3648         }
3649
3650         return len;
3651 }
3652
3653 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3654
3655 static ssize_t show_status(struct device *d,
3656                            struct device_attribute *attr, char *buf)
3657 {
3658         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3659         if (!iwl_is_alive(priv))
3660                 return -EAGAIN;
3661         return sprintf(buf, "0x%08x\n", (int)priv->status);
3662 }
3663
3664 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3665
3666 /*****************************************************************************
3667  *
3668  * driver setup and teardown
3669  *
3670  *****************************************************************************/
3671
3672 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3673 {
3674         priv->workqueue = create_workqueue(DRV_NAME);
3675
3676         init_waitqueue_head(&priv->wait_command_queue);
3677
3678         INIT_WORK(&priv->up, iwl_bg_up);
3679         INIT_WORK(&priv->restart, iwl_bg_restart);
3680         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3681         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3682         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3683         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3684         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3685         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3686
3687         iwl_setup_scan_deferred_work(priv);
3688         iwl_setup_power_deferred_work(priv);
3689
3690         if (priv->cfg->ops->lib->setup_deferred_work)
3691                 priv->cfg->ops->lib->setup_deferred_work(priv);
3692
3693         init_timer(&priv->statistics_periodic);
3694         priv->statistics_periodic.data = (unsigned long)priv;
3695         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3696
3697         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3698                      iwl_irq_tasklet, (unsigned long)priv);
3699 }
3700
3701 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3702 {
3703         if (priv->cfg->ops->lib->cancel_deferred_work)
3704                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3705
3706         cancel_delayed_work_sync(&priv->init_alive_start);
3707         cancel_delayed_work(&priv->scan_check);
3708         cancel_delayed_work_sync(&priv->set_power_save);
3709         cancel_delayed_work(&priv->alive_start);
3710         cancel_work_sync(&priv->beacon_update);
3711         del_timer_sync(&priv->statistics_periodic);
3712 }
3713
3714 static struct attribute *iwl_sysfs_entries[] = {
3715         &dev_attr_flags.attr,
3716         &dev_attr_filter_flags.attr,
3717         &dev_attr_power_level.attr,
3718         &dev_attr_retry_rate.attr,
3719         &dev_attr_statistics.attr,
3720         &dev_attr_status.attr,
3721         &dev_attr_temperature.attr,
3722         &dev_attr_tx_power.attr,
3723 #ifdef CONFIG_IWLWIFI_DEBUG
3724         &dev_attr_debug_level.attr,
3725 #endif
3726         &dev_attr_version.attr,
3727
3728         NULL
3729 };
3730
3731 static struct attribute_group iwl_attribute_group = {
3732         .name = NULL,           /* put in device directory */
3733         .attrs = iwl_sysfs_entries,
3734 };
3735
3736 static struct ieee80211_ops iwl_hw_ops = {
3737         .tx = iwl_mac_tx,
3738         .start = iwl_mac_start,
3739         .stop = iwl_mac_stop,
3740         .add_interface = iwl_mac_add_interface,
3741         .remove_interface = iwl_mac_remove_interface,
3742         .config = iwl_mac_config,
3743         .config_interface = iwl_mac_config_interface,
3744         .configure_filter = iwl_configure_filter,
3745         .set_key = iwl_mac_set_key,
3746         .update_tkip_key = iwl_mac_update_tkip_key,
3747         .get_stats = iwl_mac_get_stats,
3748         .get_tx_stats = iwl_mac_get_tx_stats,
3749         .conf_tx = iwl_mac_conf_tx,
3750         .reset_tsf = iwl_mac_reset_tsf,
3751         .bss_info_changed = iwl_bss_info_changed,
3752         .ampdu_action = iwl_mac_ampdu_action,
3753         .hw_scan = iwl_mac_hw_scan
3754 };
3755
3756 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3757 {
3758         int err = 0;
3759         struct iwl_priv *priv;
3760         struct ieee80211_hw *hw;
3761         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3762         unsigned long flags;
3763
3764         /************************
3765          * 1. Allocating HW data
3766          ************************/
3767
3768         /* Disabling hardware scan means that mac80211 will perform scans
3769          * "the hard way", rather than using device's scan. */
3770         if (cfg->mod_params->disable_hw_scan) {
3771                 if (cfg->mod_params->debug & IWL_DL_INFO)
3772                         dev_printk(KERN_DEBUG, &(pdev->dev),
3773                                    "Disabling hw_scan\n");
3774                 iwl_hw_ops.hw_scan = NULL;
3775         }
3776
3777         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3778         if (!hw) {
3779                 err = -ENOMEM;
3780                 goto out;
3781         }
3782         priv = hw->priv;
3783         /* At this point both hw and priv are allocated. */
3784
3785         SET_IEEE80211_DEV(hw, &pdev->dev);
3786
3787         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3788         priv->cfg = cfg;
3789         priv->pci_dev = pdev;
3790
3791 #ifdef CONFIG_IWLWIFI_DEBUG
3792         priv->debug_level = priv->cfg->mod_params->debug;
3793         atomic_set(&priv->restrict_refcnt, 0);
3794 #endif
3795
3796         /**************************
3797          * 2. Initializing PCI bus
3798          **************************/
3799         if (pci_enable_device(pdev)) {
3800                 err = -ENODEV;
3801                 goto out_ieee80211_free_hw;
3802         }
3803
3804         pci_set_master(pdev);
3805
3806         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3807         if (!err)
3808                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3809         if (err) {
3810                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3811                 if (!err)
3812                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3813                 /* both attempts failed: */
3814                 if (err) {
3815                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3816                                 DRV_NAME);
3817                         goto out_pci_disable_device;
3818                 }
3819         }
3820
3821         err = pci_request_regions(pdev, DRV_NAME);
3822         if (err)
3823                 goto out_pci_disable_device;
3824
3825         pci_set_drvdata(pdev, priv);
3826
3827
3828         /***********************
3829          * 3. Read REV register
3830          ***********************/
3831         priv->hw_base = pci_iomap(pdev, 0, 0);
3832         if (!priv->hw_base) {
3833                 err = -ENODEV;
3834                 goto out_pci_release_regions;
3835         }
3836
3837         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3838                 (unsigned long long) pci_resource_len(pdev, 0));
3839         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3840
3841         iwl_hw_detect(priv);
3842         printk(KERN_INFO DRV_NAME
3843                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3844                 priv->cfg->name, priv->hw_rev);
3845
3846         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3847          * PCI Tx retries from interfering with C3 CPU state */
3848         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3849
3850         /* amp init */
3851         err = priv->cfg->ops->lib->apm_ops.init(priv);
3852         if (err < 0) {
3853                 IWL_DEBUG_INFO("Failed to init APMG\n");
3854                 goto out_iounmap;
3855         }
3856         /*****************
3857          * 4. Read EEPROM
3858          *****************/
3859         /* Read the EEPROM */
3860         err = iwl_eeprom_init(priv);
3861         if (err) {
3862                 IWL_ERROR("Unable to init EEPROM\n");
3863                 goto out_iounmap;
3864         }
3865         err = iwl_eeprom_check_version(priv);
3866         if (err)
3867                 goto out_iounmap;
3868
3869         /* extract MAC Address */
3870         iwl_eeprom_get_mac(priv, priv->mac_addr);
3871         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3872         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3873
3874         /************************
3875          * 5. Setup HW constants
3876          ************************/
3877         if (iwl_set_hw_params(priv)) {
3878                 IWL_ERROR("failed to set hw parameters\n");
3879                 goto out_free_eeprom;
3880         }
3881
3882         /*******************
3883          * 6. Setup priv
3884          *******************/
3885
3886         err = iwl_init_drv(priv);
3887         if (err)
3888                 goto out_free_eeprom;
3889         /* At this point both hw and priv are initialized. */
3890
3891         /**********************************
3892          * 7. Initialize module parameters
3893          **********************************/
3894
3895         /* Disable radio (SW RF KILL) via parameter when loading driver */
3896         if (priv->cfg->mod_params->disable) {
3897                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3898                 IWL_DEBUG_INFO("Radio disabled.\n");
3899         }
3900
3901         /********************
3902          * 8. Setup services
3903          ********************/
3904         spin_lock_irqsave(&priv->lock, flags);
3905         iwl_disable_interrupts(priv);
3906         spin_unlock_irqrestore(&priv->lock, flags);
3907
3908         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3909         if (err) {
3910                 IWL_ERROR("failed to create sysfs device attributes\n");
3911                 goto out_uninit_drv;
3912         }
3913
3914
3915         iwl_setup_deferred_work(priv);
3916         iwl_setup_rx_handlers(priv);
3917
3918         /********************
3919          * 9. Conclude
3920          ********************/
3921         pci_save_state(pdev);
3922         pci_disable_device(pdev);
3923
3924         /**********************************
3925          * 10. Setup and register mac80211
3926          **********************************/
3927
3928         err = iwl_setup_mac(priv);
3929         if (err)
3930                 goto out_remove_sysfs;
3931
3932         err = iwl_dbgfs_register(priv, DRV_NAME);
3933         if (err)
3934                 IWL_ERROR("failed to create debugfs files\n");
3935
3936         err = iwl_rfkill_init(priv);
3937         if (err)
3938                 IWL_ERROR("Unable to initialize RFKILL system. "
3939                                   "Ignoring error: %d\n", err);
3940         iwl_power_initialize(priv);
3941         return 0;
3942
3943  out_remove_sysfs:
3944         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3945  out_uninit_drv:
3946         iwl_uninit_drv(priv);
3947  out_free_eeprom:
3948         iwl_eeprom_free(priv);
3949  out_iounmap:
3950         pci_iounmap(pdev, priv->hw_base);
3951  out_pci_release_regions:
3952         pci_release_regions(pdev);
3953         pci_set_drvdata(pdev, NULL);
3954  out_pci_disable_device:
3955         pci_disable_device(pdev);
3956  out_ieee80211_free_hw:
3957         ieee80211_free_hw(priv->hw);
3958  out:
3959         return err;
3960 }
3961
3962 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3963 {
3964         struct iwl_priv *priv = pci_get_drvdata(pdev);
3965         unsigned long flags;
3966
3967         if (!priv)
3968                 return;
3969
3970         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3971
3972         iwl_dbgfs_unregister(priv);
3973         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3974
3975         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3976          * to be called and iwl_down since we are removing the device
3977          * we need to set STATUS_EXIT_PENDING bit.
3978          */
3979         set_bit(STATUS_EXIT_PENDING, &priv->status);
3980         if (priv->mac80211_registered) {
3981                 ieee80211_unregister_hw(priv->hw);
3982                 priv->mac80211_registered = 0;
3983         } else {
3984                 iwl_down(priv);
3985         }
3986
3987         /* make sure we flush any pending irq or
3988          * tasklet for the driver
3989          */
3990         spin_lock_irqsave(&priv->lock, flags);
3991         iwl_disable_interrupts(priv);
3992         spin_unlock_irqrestore(&priv->lock, flags);
3993
3994         iwl_synchronize_irq(priv);
3995
3996         iwl_rfkill_unregister(priv);
3997         iwl_dealloc_ucode_pci(priv);
3998
3999         if (priv->rxq.bd)
4000                 iwl_rx_queue_free(priv, &priv->rxq);
4001         iwl_hw_txq_ctx_free(priv);
4002
4003         iwl_clear_stations_table(priv);
4004         iwl_eeprom_free(priv);
4005
4006
4007         /*netif_stop_queue(dev); */
4008         flush_workqueue(priv->workqueue);
4009
4010         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4011          * priv->workqueue... so we can't take down the workqueue
4012          * until now... */
4013         destroy_workqueue(priv->workqueue);
4014         priv->workqueue = NULL;
4015
4016         pci_iounmap(pdev, priv->hw_base);
4017         pci_release_regions(pdev);
4018         pci_disable_device(pdev);
4019         pci_set_drvdata(pdev, NULL);
4020
4021         iwl_uninit_drv(priv);
4022
4023         if (priv->ibss_beacon)
4024                 dev_kfree_skb(priv->ibss_beacon);
4025
4026         ieee80211_free_hw(priv->hw);
4027 }
4028
4029 #ifdef CONFIG_PM
4030
4031 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4032 {
4033         struct iwl_priv *priv = pci_get_drvdata(pdev);
4034
4035         if (priv->is_open) {
4036                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4037                 iwl_mac_stop(priv->hw);
4038                 priv->is_open = 1;
4039         }
4040
4041         pci_set_power_state(pdev, PCI_D3hot);
4042
4043         return 0;
4044 }
4045
4046 static int iwl_pci_resume(struct pci_dev *pdev)
4047 {
4048         struct iwl_priv *priv = pci_get_drvdata(pdev);
4049
4050         pci_set_power_state(pdev, PCI_D0);
4051
4052         if (priv->is_open)
4053                 iwl_mac_start(priv->hw);
4054
4055         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4056         return 0;
4057 }
4058
4059 #endif /* CONFIG_PM */
4060
4061 /*****************************************************************************
4062  *
4063  * driver and module entry point
4064  *
4065  *****************************************************************************/
4066
4067 /* Hardware specific file defines the PCI IDs table for that hardware module */
4068 static struct pci_device_id iwl_hw_card_ids[] = {
4069 #ifdef CONFIG_IWL4965
4070         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4071         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4072 #endif /* CONFIG_IWL4965 */
4073 #ifdef CONFIG_IWL5000
4074         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4075         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4076         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4077         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4078         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4079         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4080         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4081         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4082         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4083         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4084 /* 5350 WiFi/WiMax */
4085         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4086         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4087         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4088 /* 5150 Wifi/WiMax */
4089         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4090         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4091 #endif /* CONFIG_IWL5000 */
4092
4093         {0}
4094 };
4095 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4096
4097 static struct pci_driver iwl_driver = {
4098         .name = DRV_NAME,
4099         .id_table = iwl_hw_card_ids,
4100         .probe = iwl_pci_probe,
4101         .remove = __devexit_p(iwl_pci_remove),
4102 #ifdef CONFIG_PM
4103         .suspend = iwl_pci_suspend,
4104         .resume = iwl_pci_resume,
4105 #endif
4106 };
4107
4108 static int __init iwl_init(void)
4109 {
4110
4111         int ret;
4112         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4113         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4114
4115         ret = iwlagn_rate_control_register();
4116         if (ret) {
4117                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4118                 return ret;
4119         }
4120
4121         ret = pci_register_driver(&iwl_driver);
4122         if (ret) {
4123                 IWL_ERROR("Unable to initialize PCI module\n");
4124                 goto error_register;
4125         }
4126
4127         return ret;
4128
4129 error_register:
4130         iwlagn_rate_control_unregister();
4131         return ret;
4132 }
4133
4134 static void __exit iwl_exit(void)
4135 {
4136         pci_unregister_driver(&iwl_driver);
4137         iwlagn_rate_control_unregister();
4138 }
4139
4140 module_exit(iwl_exit);
4141 module_init(iwl_init);