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                                           const u8 *dest, int left)
 375 {
 376         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 377             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 378              (priv->iw_mode != NL80211_IFTYPE_AP)))
 379                 return 0;
 380
 381         if (priv->ibss_beacon->len > left)
 382                 return 0;
 383
 384         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 385
 386         return priv->ibss_beacon->len;
 387 }
 388
 389 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 390 {
 391         int i;
 392         int rate_mask;
 393
 394         /* Set rate mask*/
 395         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 396                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 397         else
 398                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 399
 400         /* Find lowest valid rate */
 401         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 402                                         i = iwl_rates[i].next_ieee) {
 403                 if (rate_mask & (1 << i))
 404                         return iwl_rates[i].plcp;
 405         }
 406
 407         /* No valid rate was found. Assign the lowest one */
 408         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 409                 return IWL_RATE_1M_PLCP;
 410         else
 411                 return IWL_RATE_6M_PLCP;
 412 }
 413
 414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 415                                        struct iwl_frame *frame, u8 rate)
 416 {
 417         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 418         unsigned int frame_size;
 419
 420         tx_beacon_cmd = &frame->u.beacon;
 421         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 422
 423         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 424         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 425
 426         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 427                                 iwl_bcast_addr,
 428                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 429
 430         BUG_ON(frame_size > MAX_MPDU_SIZE);
 431         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 432
 433         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 434                 tx_beacon_cmd->tx.rate_n_flags =
 435                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 436         else
 437                 tx_beacon_cmd->tx.rate_n_flags =
 438                         iwl_hw_set_rate_n_flags(rate, 0);
 439
 440         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 441                                      TX_CMD_FLG_TSF_MSK |
 442                                      TX_CMD_FLG_STA_RATE_MSK;
 443
 444         return sizeof(*tx_beacon_cmd) + frame_size;
 445 }
 446 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 447 {
 448         struct iwl_frame *frame;
 449         unsigned int frame_size;
 450         int rc;
 451         u8 rate;
 452
 453         frame = iwl_get_free_frame(priv);
 454
 455         if (!frame) {
 456                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 457                           "command.\n");
 458                 return -ENOMEM;
 459         }
 460
 461         rate = iwl_rate_get_lowest_plcp(priv);
 462
 463         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 464
 465         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 466                               &frame->u.cmd[0]);
 467
 468         iwl_free_frame(priv, frame);
 469
 470         return rc;
 471 }
 472
 473 /******************************************************************************
 474  *
 475  * Misc. internal state and helper functions
 476  *
 477  ******************************************************************************/
 478
 479 static void iwl_ht_conf(struct iwl_priv *priv,
 480                             struct ieee80211_bss_conf *bss_conf)
 481 {
 482         struct ieee80211_sta_ht_cap *ht_conf;
 483         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 484         struct ieee80211_sta *sta;
 485
 486         IWL_DEBUG_MAC80211("enter: \n");
 487
 488         if (!iwl_conf->is_ht)
 489                 return;
 490
 491
 492         /*
 493          * It is totally wrong to base global information on something
 494          * that is valid only when associated, alas, this driver works
 495          * that way and I don't know how to fix it.
 496          */
 497
 498         rcu_read_lock();
 499         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 500         if (!sta) {
 501                 rcu_read_unlock();
 502                 return;
 503         }
 504         ht_conf = &sta->ht_cap;
 505
 506         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 507                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 508         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 509                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 510
 511         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 512         iwl_conf->max_amsdu_size =
 513                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 514
 515         iwl_conf->supported_chan_width =
 516                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 517
 518         /*
 519          * XXX: The HT configuration needs to be moved into iwl_mac_config()
 520          *      to be done there correctly.
 521          */
 522
 523         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 524         if (priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40MINUS)
 525                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 526         else if(priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40PLUS)
 527                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 528
 529         /* If no above or below channel supplied disable FAT channel */
 530         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 531             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 532                 iwl_conf->supported_chan_width = 0;
 533
 534         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 535
 536         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 537
 538         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
 539         iwl_conf->ht_protection =
 540                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 541         iwl_conf->non_GF_STA_present =
 542                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 543
 544         rcu_read_unlock();
 545
 546         IWL_DEBUG_MAC80211("leave\n");
 547 }
 548
 549 /*
 550  * QoS  support
 551 */
 552 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 553 {
 554         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 555                 return;
 556
 557         priv->qos_data.def_qos_parm.qos_flags = 0;
 558
 559         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 560             !priv->qos_data.qos_cap.q_AP.txop_request)
 561                 priv->qos_data.def_qos_parm.qos_flags |=
 562                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 563         if (priv->qos_data.qos_active)
 564                 priv->qos_data.def_qos_parm.qos_flags |=
 565                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 566
 567         if (priv->current_ht_config.is_ht)
 568                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 569
 570         if (force || iwl_is_associated(priv)) {
 571                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 572                                 priv->qos_data.qos_active,
 573                                 priv->qos_data.def_qos_parm.qos_flags);
 574
 575                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 576                                        sizeof(struct iwl_qosparam_cmd),
 577                                        &priv->qos_data.def_qos_parm, NULL);
 578         }
 579 }
 580
 581 #define MAX_UCODE_BEACON_INTERVAL       4096
 582
 583 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 584 {
 585         u16 new_val = 0;
 586         u16 beacon_factor = 0;
 587
 588         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 589                                         / MAX_UCODE_BEACON_INTERVAL;
 590         new_val = beacon_val / beacon_factor;
 591
 592         return new_val;
 593 }
 594
 595 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 596 {
 597         u64 tsf;
 598         s32 interval_tm, rem;
 599         unsigned long flags;
 600         struct ieee80211_conf *conf = NULL;
 601         u16 beacon_int = 0;
 602
 603         conf = ieee80211_get_hw_conf(priv->hw);
 604
 605         spin_lock_irqsave(&priv->lock, flags);
 606         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 607         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 608
 609         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 610                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 611                 priv->rxon_timing.atim_window = 0;
 612         } else {
 613                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 614
 615                 /* TODO: we need to get atim_window from upper stack
 616                  * for now we set to 0 */
 617                 priv->rxon_timing.atim_window = 0;
 618         }
 619
 620         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 621
 622         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 623         interval_tm = beacon_int * 1024;
 624         rem = do_div(tsf, interval_tm);
 625         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 626
 627         spin_unlock_irqrestore(&priv->lock, flags);
 628         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 629                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 630                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 631                         le16_to_cpu(priv->rxon_timing.atim_window));
 632 }
 633
 634 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 635                                    enum ieee80211_band band)
 636 {
 637         if (band == IEEE80211_BAND_5GHZ) {
 638                 priv->staging_rxon.flags &=
 639                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 640                       | RXON_FLG_CCK_MSK);
 641                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 642         } else {
 643                 /* Copied from iwl_post_associate() */
 644                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 645                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 646                 else
 647                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 648
 649                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 650                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 651
 652                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 653                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 654                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 655         }
 656 }
 657
 658 /*
 659  * initialize rxon structure with default values from eeprom
 660  */
 661 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 662 {
 663         const struct iwl_channel_info *ch_info;
 664
 665         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 666
 667         switch (mode) {
 668         case NL80211_IFTYPE_AP:
 669                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 670                 break;
 671
 672         case NL80211_IFTYPE_STATION:
 673                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 674                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 675                 break;
 676
 677         case NL80211_IFTYPE_ADHOC:
 678                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 679                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 680                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 681                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 682                 break;
 683
 684         case NL80211_IFTYPE_MONITOR:
 685                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 686                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 687                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 688                 break;
 689         default:
 690                 IWL_ERROR("Unsupported interface type %d\n", mode);
 691                 break;
 692         }
 693
 694 #if 0
 695         /* TODO:  Figure out when short_preamble would be set and cache from
 696          * that */
 697         if (!hw_to_local(priv->hw)->short_preamble)
 698                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 699         else
 700                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 701 #endif
 702
 703         ch_info = iwl_get_channel_info(priv, priv->band,
 704                                        le16_to_cpu(priv->active_rxon.channel));
 705
 706         if (!ch_info)
 707                 ch_info = &priv->channel_info[0];
 708
 709         /*
 710          * in some case A channels are all non IBSS
 711          * in this case force B/G channel
 712          */
 713         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 714             !(is_channel_ibss(ch_info)))
 715                 ch_info = &priv->channel_info[0];
 716
 717         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 718         priv->band = ch_info->band;
 719
 720         iwl_set_flags_for_band(priv, priv->band);
 721
 722         priv->staging_rxon.ofdm_basic_rates =
 723             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 724         priv->staging_rxon.cck_basic_rates =
 725             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 726
 727         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 728                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 729         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 730         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 731         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 732         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 733         iwl_set_rxon_chain(priv);
 734 }
 735
 736 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 737 {
 738         iwl_connection_init_rx_config(priv, mode);
 739         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 740
 741         iwl_clear_stations_table(priv);
 742
 743         /* dont commit rxon if rf-kill is on*/
 744         if (!iwl_is_ready_rf(priv))
 745                 return -EAGAIN;
 746
 747         cancel_delayed_work(&priv->scan_check);
 748         if (iwl_scan_cancel_timeout(priv, 100)) {
 749                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 750                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 751                 return -EAGAIN;
 752         }
 753
 754         iwl_commit_rxon(priv);
 755
 756         return 0;
 757 }
 758
 759 static void iwl_set_rate(struct iwl_priv *priv)
 760 {
 761         const struct ieee80211_supported_band *hw = NULL;
 762         struct ieee80211_rate *rate;
 763         int i;
 764
 765         hw = iwl_get_hw_mode(priv, priv->band);
 766         if (!hw) {
 767                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 768                 return;
 769         }
 770
 771         priv->active_rate = 0;
 772         priv->active_rate_basic = 0;
 773
 774         for (i = 0; i < hw->n_bitrates; i++) {
 775                 rate = &(hw->bitrates[i]);
 776                 if (rate->hw_value < IWL_RATE_COUNT)
 777                         priv->active_rate |= (1 << rate->hw_value);
 778         }
 779
 780         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 781                        priv->active_rate, priv->active_rate_basic);
 782
 783         /*
 784          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 785          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 786          * OFDM
 787          */
 788         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 789                 priv->staging_rxon.cck_basic_rates =
 790                     ((priv->active_rate_basic &
 791                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 792         else
 793                 priv->staging_rxon.cck_basic_rates =
 794                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 795
 796         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 797                 priv->staging_rxon.ofdm_basic_rates =
 798                     ((priv->active_rate_basic &
 799                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 800                       IWL_FIRST_OFDM_RATE) & 0xFF;
 801         else
 802                 priv->staging_rxon.ofdm_basic_rates =
 803                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 804 }
 805
 806
 807 /******************************************************************************
 808  *
 809  * Generic RX handler implementations
 810  *
 811  ******************************************************************************/
 812 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 813                                 struct iwl_rx_mem_buffer *rxb)
 814 {
 815         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 816         struct iwl_alive_resp *palive;
 817         struct delayed_work *pwork;
 818
 819         palive = &pkt->u.alive_frame;
 820
 821         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 822                        "0x%01X 0x%01X\n",
 823                        palive->is_valid, palive->ver_type,
 824                        palive->ver_subtype);
 825
 826         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 827                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 828                 memcpy(&priv->card_alive_init,
 829                        &pkt->u.alive_frame,
 830                        sizeof(struct iwl_init_alive_resp));
 831                 pwork = &priv->init_alive_start;
 832         } else {
 833                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 834                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 835                        sizeof(struct iwl_alive_resp));
 836                 pwork = &priv->alive_start;
 837         }
 838
 839         /* We delay the ALIVE response by 5ms to
 840          * give the HW RF Kill time to activate... */
 841         if (palive->is_valid == UCODE_VALID_OK)
 842                 queue_delayed_work(priv->workqueue, pwork,
 843                                    msecs_to_jiffies(5));
 844         else
 845                 IWL_WARNING("uCode did not respond OK.\n");
 846 }
 847
 848 static void iwl_rx_reply_error(struct iwl_priv *priv,
 849                                    struct iwl_rx_mem_buffer *rxb)
 850 {
 851         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 852
 853         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 854                 "seq 0x%04X ser 0x%08X\n",
 855                 le32_to_cpu(pkt->u.err_resp.error_type),
 856                 get_cmd_string(pkt->u.err_resp.cmd_id),
 857                 pkt->u.err_resp.cmd_id,
 858                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 859                 le32_to_cpu(pkt->u.err_resp.error_info));
 860 }
 861
 862 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 863
 864 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 865 {
 866         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 867         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 868         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
 869         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 870                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 871         rxon->channel = csa->channel;
 872         priv->staging_rxon.channel = csa->channel;
 873 }
 874
 875 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 876                                       struct iwl_rx_mem_buffer *rxb)
 877 {
 878 #ifdef CONFIG_IWLWIFI_DEBUG
 879         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 880         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
 881         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 882                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 883 #endif
 884 }
 885
 886 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 887                                              struct iwl_rx_mem_buffer *rxb)
 888 {
 889         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 890         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 891                         "notification for %s:\n",
 892                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 893         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 894 }
 895
 896 static void iwl_bg_beacon_update(struct work_struct *work)
 897 {
 898         struct iwl_priv *priv =
 899                 container_of(work, struct iwl_priv, beacon_update);
 900         struct sk_buff *beacon;
 901
 902         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 903         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 904
 905         if (!beacon) {
 906                 IWL_ERROR("update beacon failed\n");
 907                 return;
 908         }
 909
 910         mutex_lock(&priv->mutex);
 911         /* new beacon skb is allocated every time; dispose previous.*/
 912         if (priv->ibss_beacon)
 913                 dev_kfree_skb(priv->ibss_beacon);
 914
 915         priv->ibss_beacon = beacon;
 916         mutex_unlock(&priv->mutex);
 917
 918         iwl_send_beacon_cmd(priv);
 919 }
 920
 921 /**
 922  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 923  *
 924  * This callback is provided in order to send a statistics request.
 925  *
 926  * This timer function is continually reset to execute within
 927  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 928  * was received.  We need to ensure we receive the statistics in order
 929  * to update the temperature used for calibrating the TXPOWER.
 930  */
 931 static void iwl_bg_statistics_periodic(unsigned long data)
 932 {
 933         struct iwl_priv *priv = (struct iwl_priv *)data;
 934
 935         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 936                 return;
 937
 938         /* dont send host command if rf-kill is on */
 939         if (!iwl_is_ready_rf(priv))
 940                 return;
 941
 942         iwl_send_statistics_request(priv, CMD_ASYNC);
 943 }
 944
 945 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 946                                 struct iwl_rx_mem_buffer *rxb)
 947 {
 948 #ifdef CONFIG_IWLWIFI_DEBUG
 949         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 950         struct iwl4965_beacon_notif *beacon =
 951                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 952         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 953
 954         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 955                 "tsf %d %d rate %d\n",
 956                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 957                 beacon->beacon_notify_hdr.failure_frame,
 958                 le32_to_cpu(beacon->ibss_mgr_status),
 959                 le32_to_cpu(beacon->high_tsf),
 960                 le32_to_cpu(beacon->low_tsf), rate);
 961 #endif
 962
 963         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 964             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 965                 queue_work(priv->workqueue, &priv->beacon_update);
 966 }
 967
 968 /* Handle notification from uCode that card's power state is changing
 969  * due to software, hardware, or critical temperature RFKILL */
 970 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 971                                     struct iwl_rx_mem_buffer *rxb)
 972 {
 973         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 974         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 975         unsigned long status = priv->status;
 976
 977         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 978                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 979                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 980
 981         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 982                      RF_CARD_DISABLED)) {
 983
 984                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 985                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 986
 987                 if (!iwl_grab_nic_access(priv)) {
 988                         iwl_write_direct32(
 989                                 priv, HBUS_TARG_MBX_C,
 990                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 991
 992                         iwl_release_nic_access(priv);
 993                 }
 994
 995                 if (!(flags & RXON_CARD_DISABLED)) {
 996                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 997                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 998                         if (!iwl_grab_nic_access(priv)) {
 999                                 iwl_write_direct32(
1000                                         priv, HBUS_TARG_MBX_C,
1001                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1002
1003                                 iwl_release_nic_access(priv);
1004                         }
1005                 }
1006
1007                 if (flags & RF_CARD_DISABLED) {
1008                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1009                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1010                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1011                         if (!iwl_grab_nic_access(priv))
1012                                 iwl_release_nic_access(priv);
1013                 }
1014         }
1015
1016         if (flags & HW_CARD_DISABLED)
1017                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1018         else
1019                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1020
1021
1022         if (flags & SW_CARD_DISABLED)
1023                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1024         else
1025                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1026
1027         if (!(flags & RXON_CARD_DISABLED))
1028                 iwl_scan_cancel(priv);
1029
1030         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1031              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1032             (test_bit(STATUS_RF_KILL_SW, &status) !=
1033              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1034                 queue_work(priv->workqueue, &priv->rf_kill);
1035         else
1036                 wake_up_interruptible(&priv->wait_command_queue);
1037 }
1038
1039 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1040 {
1041         int ret;
1042         unsigned long flags;
1043
1044         spin_lock_irqsave(&priv->lock, flags);
1045         ret = iwl_grab_nic_access(priv);
1046         if (ret)
1047                 goto err;
1048
1049         if (src == IWL_PWR_SRC_VAUX) {
1050                 u32 val;
1051                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1052                                             &val);
1053
1054                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1055                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1056                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1057                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1058         } else {
1059                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1060                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1061                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1062         }
1063
1064         iwl_release_nic_access(priv);
1065 err:
1066         spin_unlock_irqrestore(&priv->lock, flags);
1067         return ret;
1068 }
1069
1070 /**
1071  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1072  *
1073  * Setup the RX handlers for each of the reply types sent from the uCode
1074  * to the host.
1075  *
1076  * This function chains into the hardware specific files for them to setup
1077  * any hardware specific handlers as well.
1078  */
1079 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1080 {
1081         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1082         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1083         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1084         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1085         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1086             iwl_rx_pm_debug_statistics_notif;
1087         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1088
1089         /*
1090          * The same handler is used for both the REPLY to a discrete
1091          * statistics request from the host as well as for the periodic
1092          * statistics notifications (after received beacons) from the uCode.
1093          */
1094         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1095         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1096
1097         iwl_setup_spectrum_handlers(priv);
1098         iwl_setup_rx_scan_handlers(priv);
1099
1100         /* status change handler */
1101         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1102
1103         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1104             iwl_rx_missed_beacon_notif;
1105         /* Rx handlers */
1106         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1107         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1108         /* block ack */
1109         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1110         /* Set up hardware specific Rx handlers */
1111         priv->cfg->ops->lib->rx_handler_setup(priv);
1112 }
1113
1114 /*
1115  * this should be called while priv->lock is locked
1116 */
1117 static void __iwl_rx_replenish(struct iwl_priv *priv)
1118 {
1119         iwl_rx_allocate(priv);
1120         iwl_rx_queue_restock(priv);
1121 }
1122
1123
1124 /**
1125  * iwl_rx_handle - Main entry function for receiving responses from uCode
1126  *
1127  * Uses the priv->rx_handlers callback function array to invoke
1128  * the appropriate handlers, including command responses,
1129  * frame-received notifications, and other notifications.
1130  */
1131 void iwl_rx_handle(struct iwl_priv *priv)
1132 {
1133         struct iwl_rx_mem_buffer *rxb;
1134         struct iwl_rx_packet *pkt;
1135         struct iwl_rx_queue *rxq = &priv->rxq;
1136         u32 r, i;
1137         int reclaim;
1138         unsigned long flags;
1139         u8 fill_rx = 0;
1140         u32 count = 8;
1141
1142         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1143          * buffer that the driver may process (last buffer filled by ucode). */
1144         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1145         i = rxq->read;
1146
1147         /* Rx interrupt, but nothing sent from uCode */
1148         if (i == r)
1149                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1150
1151         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1152                 fill_rx = 1;
1153
1154         while (i != r) {
1155                 rxb = rxq->queue[i];
1156
1157                 /* If an RXB doesn't have a Rx queue slot associated with it,
1158                  * then a bug has been introduced in the queue refilling
1159                  * routines -- catch it here */
1160                 BUG_ON(rxb == NULL);
1161
1162                 rxq->queue[i] = NULL;
1163
1164                 dma_sync_single_range_for_cpu(
1165                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1166                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1167                                 priv->hw_params.rx_buf_size,
1168                                 PCI_DMA_FROMDEVICE);
1169                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1170
1171                 /* Reclaim a command buffer only if this packet is a response
1172                  *   to a (driver-originated) command.
1173                  * If the packet (e.g. Rx frame) originated from uCode,
1174                  *   there is no command buffer to reclaim.
1175                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1176                  *   but apparently a few don't get set; catch them here. */
1177                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1178                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1179                         (pkt->hdr.cmd != REPLY_RX) &&
1180                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1181                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1182                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1183                         (pkt->hdr.cmd != REPLY_TX);
1184
1185                 /* Based on type of command response or notification,
1186                  *   handle those that need handling via function in
1187                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1188                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1189                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1190                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1191                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1192                 } else {
1193                         /* No handling needed */
1194                         IWL_DEBUG(IWL_DL_RX,
1195                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1196                                 r, i, get_cmd_string(pkt->hdr.cmd),
1197                                 pkt->hdr.cmd);
1198                 }
1199
1200                 if (reclaim) {
1201                         /* Invoke any callbacks, transfer the skb to caller, and
1202                          * fire off the (possibly) blocking iwl_send_cmd()
1203                          * as we reclaim the driver command queue */
1204                         if (rxb && rxb->skb)
1205                                 iwl_tx_cmd_complete(priv, rxb);
1206                         else
1207                                 IWL_WARNING("Claim null rxb?\n");
1208                 }
1209
1210                 /* For now we just don't re-use anything.  We can tweak this
1211                  * later to try and re-use notification packets and SKBs that
1212                  * fail to Rx correctly */
1213                 if (rxb->skb != NULL) {
1214                         priv->alloc_rxb_skb--;
1215                         dev_kfree_skb_any(rxb->skb);
1216                         rxb->skb = NULL;
1217                 }
1218
1219                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1220                                  priv->hw_params.rx_buf_size + 256,
1221                                  PCI_DMA_FROMDEVICE);
1222                 spin_lock_irqsave(&rxq->lock, flags);
1223                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1224                 spin_unlock_irqrestore(&rxq->lock, flags);
1225                 i = (i + 1) & RX_QUEUE_MASK;
1226                 /* If there are a lot of unused frames,
1227                  * restock the Rx queue so ucode wont assert. */
1228                 if (fill_rx) {
1229                         count++;
1230                         if (count >= 8) {
1231                                 priv->rxq.read = i;
1232                                 __iwl_rx_replenish(priv);
1233                                 count = 0;
1234                         }
1235                 }
1236         }
1237
1238         /* Backtrack one entry */
1239         priv->rxq.read = i;
1240         iwl_rx_queue_restock(priv);
1241 }
1242
1243 #ifdef CONFIG_IWLWIFI_DEBUG
1244 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1245 {
1246         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1247
1248         IWL_DEBUG_RADIO("RX CONFIG:\n");
1249         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1250         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1251         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1252         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1253                         le32_to_cpu(rxon->filter_flags));
1254         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1255         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1256                         rxon->ofdm_basic_rates);
1257         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1258         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1259         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1260         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1261 }
1262 #endif
1263
1264 /* call this function to flush any scheduled tasklet */
1265 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1266 {
1267         /* wait to make sure we flush pending tasklet*/
1268         synchronize_irq(priv->pci_dev->irq);
1269         tasklet_kill(&priv->irq_tasklet);
1270 }
1271
1272 /**
1273  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1274  */
1275 static void iwl_irq_handle_error(struct iwl_priv *priv)
1276 {
1277         /* Set the FW error flag -- cleared on iwl_down */
1278         set_bit(STATUS_FW_ERROR, &priv->status);
1279
1280         /* Cancel currently queued command. */
1281         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1282
1283 #ifdef CONFIG_IWLWIFI_DEBUG
1284         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1285                 iwl_dump_nic_error_log(priv);
1286                 iwl_dump_nic_event_log(priv);
1287                 iwl_print_rx_config_cmd(priv);
1288         }
1289 #endif
1290
1291         wake_up_interruptible(&priv->wait_command_queue);
1292
1293         /* Keep the restart process from trying to send host
1294          * commands by clearing the INIT status bit */
1295         clear_bit(STATUS_READY, &priv->status);
1296
1297         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1298                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1299                           "Restarting adapter due to uCode error.\n");
1300
1301                 if (iwl_is_associated(priv)) {
1302                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1303                                sizeof(priv->recovery_rxon));
1304                         priv->error_recovering = 1;
1305                 }
1306                 if (priv->cfg->mod_params->restart_fw)
1307                         queue_work(priv->workqueue, &priv->restart);
1308         }
1309 }
1310
1311 static void iwl_error_recovery(struct iwl_priv *priv)
1312 {
1313         unsigned long flags;
1314
1315         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1316                sizeof(priv->staging_rxon));
1317         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1318         iwl_commit_rxon(priv);
1319
1320         iwl_rxon_add_station(priv, priv->bssid, 1);
1321
1322         spin_lock_irqsave(&priv->lock, flags);
1323         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1324         priv->error_recovering = 0;
1325         spin_unlock_irqrestore(&priv->lock, flags);
1326 }
1327
1328 static void iwl_irq_tasklet(struct iwl_priv *priv)
1329 {
1330         u32 inta, handled = 0;
1331         u32 inta_fh;
1332         unsigned long flags;
1333 #ifdef CONFIG_IWLWIFI_DEBUG
1334         u32 inta_mask;
1335 #endif
1336
1337         spin_lock_irqsave(&priv->lock, flags);
1338
1339         /* Ack/clear/reset pending uCode interrupts.
1340          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1341          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1342         inta = iwl_read32(priv, CSR_INT);
1343         iwl_write32(priv, CSR_INT, inta);
1344
1345         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1346          * Any new interrupts that happen after this, either while we're
1347          * in this tasklet, or later, will show up in next ISR/tasklet. */
1348         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1349         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1350
1351 #ifdef CONFIG_IWLWIFI_DEBUG
1352         if (priv->debug_level & IWL_DL_ISR) {
1353                 /* just for debug */
1354                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1355                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1356                               inta, inta_mask, inta_fh);
1357         }
1358 #endif
1359
1360         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1361          * atomic, make sure that inta covers all the interrupts that
1362          * we've discovered, even if FH interrupt came in just after
1363          * reading CSR_INT. */
1364         if (inta_fh & CSR49_FH_INT_RX_MASK)
1365                 inta |= CSR_INT_BIT_FH_RX;
1366         if (inta_fh & CSR49_FH_INT_TX_MASK)
1367                 inta |= CSR_INT_BIT_FH_TX;
1368
1369         /* Now service all interrupt bits discovered above. */
1370         if (inta & CSR_INT_BIT_HW_ERR) {
1371                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1372
1373                 /* Tell the device to stop sending interrupts */
1374                 iwl_disable_interrupts(priv);
1375
1376                 iwl_irq_handle_error(priv);
1377
1378                 handled |= CSR_INT_BIT_HW_ERR;
1379
1380                 spin_unlock_irqrestore(&priv->lock, flags);
1381
1382                 return;
1383         }
1384
1385 #ifdef CONFIG_IWLWIFI_DEBUG
1386         if (priv->debug_level & (IWL_DL_ISR)) {
1387                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1388                 if (inta & CSR_INT_BIT_SCD)
1389                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1390                                       "the frame/frames.\n");
1391
1392                 /* Alive notification via Rx interrupt will do the real work */
1393                 if (inta & CSR_INT_BIT_ALIVE)
1394                         IWL_DEBUG_ISR("Alive interrupt\n");
1395         }
1396 #endif
1397         /* Safely ignore these bits for debug checks below */
1398         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1399
1400         /* HW RF KILL switch toggled */
1401         if (inta & CSR_INT_BIT_RF_KILL) {
1402                 int hw_rf_kill = 0;
1403                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1404                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1405                         hw_rf_kill = 1;
1406
1407                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1408                                 hw_rf_kill ? "disable radio" : "enable radio");
1409
1410                 /* driver only loads ucode once setting the interface up.
1411                  * the driver as well won't allow loading if RFKILL is set
1412                  * therefore no need to restart the driver from this handler
1413                  */
1414                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1415                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1416                         if (priv->is_open && !iwl_is_rfkill(priv))
1417                                 queue_work(priv->workqueue, &priv->up);
1418                 }
1419
1420                 handled |= CSR_INT_BIT_RF_KILL;
1421         }
1422
1423         /* Chip got too hot and stopped itself */
1424         if (inta & CSR_INT_BIT_CT_KILL) {
1425                 IWL_ERROR("Microcode CT kill error detected.\n");
1426                 handled |= CSR_INT_BIT_CT_KILL;
1427         }
1428
1429         /* Error detected by uCode */
1430         if (inta & CSR_INT_BIT_SW_ERR) {
1431                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1432                           inta);
1433                 iwl_irq_handle_error(priv);
1434                 handled |= CSR_INT_BIT_SW_ERR;
1435         }
1436
1437         /* uCode wakes up after power-down sleep */
1438         if (inta & CSR_INT_BIT_WAKEUP) {
1439                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1440                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1441                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1442                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1443                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1444                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1445                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1446                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1447
1448                 handled |= CSR_INT_BIT_WAKEUP;
1449         }
1450
1451         /* All uCode command responses, including Tx command responses,
1452          * Rx "responses" (frame-received notification), and other
1453          * notifications from uCode come through here*/
1454         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1455                 iwl_rx_handle(priv);
1456                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1457         }
1458
1459         if (inta & CSR_INT_BIT_FH_TX) {
1460                 IWL_DEBUG_ISR("Tx interrupt\n");
1461                 handled |= CSR_INT_BIT_FH_TX;
1462                 /* FH finished to write, send event */
1463                 priv->ucode_write_complete = 1;
1464                 wake_up_interruptible(&priv->wait_command_queue);
1465         }
1466
1467         if (inta & ~handled)
1468                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1469
1470         if (inta & ~CSR_INI_SET_MASK) {
1471                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1472                          inta & ~CSR_INI_SET_MASK);
1473                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1474         }
1475
1476         /* Re-enable all interrupts */
1477         /* only Re-enable if diabled by irq */
1478         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1479                 iwl_enable_interrupts(priv);
1480
1481 #ifdef CONFIG_IWLWIFI_DEBUG
1482         if (priv->debug_level & (IWL_DL_ISR)) {
1483                 inta = iwl_read32(priv, CSR_INT);
1484                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1485                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1486                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1487                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1488         }
1489 #endif
1490         spin_unlock_irqrestore(&priv->lock, flags);
1491 }
1492
1493 static irqreturn_t iwl_isr(int irq, void *data)
1494 {
1495         struct iwl_priv *priv = data;
1496         u32 inta, inta_mask;
1497         u32 inta_fh;
1498         if (!priv)
1499                 return IRQ_NONE;
1500
1501         spin_lock(&priv->lock);
1502
1503         /* Disable (but don't clear!) interrupts here to avoid
1504          *    back-to-back ISRs and sporadic interrupts from our NIC.
1505          * If we have something to service, the tasklet will re-enable ints.
1506          * If we *don't* have something, we'll re-enable before leaving here. */
1507         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1508         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1509
1510         /* Discover which interrupts are active/pending */
1511         inta = iwl_read32(priv, CSR_INT);
1512         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1513
1514         /* Ignore interrupt if there's nothing in NIC to service.
1515          * This may be due to IRQ shared with another device,
1516          * or due to sporadic interrupts thrown from our NIC. */
1517         if (!inta && !inta_fh) {
1518                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1519                 goto none;
1520         }
1521
1522         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1523                 /* Hardware disappeared. It might have already raised
1524                  * an interrupt */
1525                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1526                 goto unplugged;
1527         }
1528
1529         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1530                       inta, inta_mask, inta_fh);
1531
1532         inta &= ~CSR_INT_BIT_SCD;
1533
1534         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1535         if (likely(inta || inta_fh))
1536                 tasklet_schedule(&priv->irq_tasklet);
1537
1538  unplugged:
1539         spin_unlock(&priv->lock);
1540         return IRQ_HANDLED;
1541
1542  none:
1543         /* re-enable interrupts here since we don't have anything to service. */
1544         /* only Re-enable if diabled by irq */
1545         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1546                 iwl_enable_interrupts(priv);
1547         spin_unlock(&priv->lock);
1548         return IRQ_NONE;
1549 }
1550
1551 /******************************************************************************
1552  *
1553  * uCode download functions
1554  *
1555  ******************************************************************************/
1556
1557 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1558 {
1559         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1560         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1561         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1562         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1563         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1564         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1565 }
1566
1567 static void iwl_nic_start(struct iwl_priv *priv)
1568 {
1569         /* Remove all resets to allow NIC to operate */
1570         iwl_write32(priv, CSR_RESET, 0);
1571 }
1572
1573
1574 /**
1575  * iwl_read_ucode - Read uCode images from disk file.
1576  *
1577  * Copy into buffers for card to fetch via bus-mastering
1578  */
1579 static int iwl_read_ucode(struct iwl_priv *priv)
1580 {
1581         struct iwl_ucode *ucode;
1582         int ret = -EINVAL, index;
1583         const struct firmware *ucode_raw;
1584         const char *name_pre = priv->cfg->fw_name_pre;
1585         const unsigned int api_max = priv->cfg->ucode_api_max;
1586         const unsigned int api_min = priv->cfg->ucode_api_min;
1587         char buf[25];
1588         u8 *src;
1589         size_t len;
1590         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1591
1592         /* Ask kernel firmware_class module to get the boot firmware off disk.
1593          * request_firmware() is synchronous, file is in memory on return. */
1594         for (index = api_max; index >= api_min; index--) {
1595                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1596                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1597                 if (ret < 0) {
1598                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
1599                                   buf, ret);
1600                         if (ret == -ENOENT)
1601                                 continue;
1602                         else
1603                                 goto error;
1604                 } else {
1605                         if (index < api_max)
1606                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1607                                           buf, api_max);
1608                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1609                                        buf, ucode_raw->size);
1610                         break;
1611                 }
1612         }
1613
1614         if (ret < 0)
1615                 goto error;
1616
1617         /* Make sure that we got at least our header! */
1618         if (ucode_raw->size < sizeof(*ucode)) {
1619                 IWL_ERROR("File size way too small!\n");
1620                 ret = -EINVAL;
1621                 goto err_release;
1622         }
1623
1624         /* Data from ucode file:  header followed by uCode images */
1625         ucode = (void *)ucode_raw->data;
1626
1627         priv->ucode_ver = le32_to_cpu(ucode->ver);
1628         api_ver = IWL_UCODE_API(priv->ucode_ver);
1629         inst_size = le32_to_cpu(ucode->inst_size);
1630         data_size = le32_to_cpu(ucode->data_size);
1631         init_size = le32_to_cpu(ucode->init_size);
1632         init_data_size = le32_to_cpu(ucode->init_data_size);
1633         boot_size = le32_to_cpu(ucode->boot_size);
1634
1635         /* api_ver should match the api version forming part of the
1636          * firmware filename ... but we don't check for that and only rely
1637          * on the API version read from firware header from here on forward */
1638
1639         if (api_ver < api_min || api_ver > api_max) {
1640                 IWL_ERROR("Driver unable to support your firmware API. "
1641                           "Driver supports v%u, firmware is v%u.\n",
1642                           api_max, api_ver);
1643                 priv->ucode_ver = 0;
1644                 ret = -EINVAL;
1645                 goto err_release;
1646         }
1647         if (api_ver != api_max)
1648                 IWL_ERROR("Firmware has old API version. Expected v%u, "
1649                           "got v%u. New firmware can be obtained "
1650                           "from http://www.intellinuxwireless.org.\n",
1651                           api_max, api_ver);
1652
1653         printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
1654                        IWL_UCODE_MAJOR(priv->ucode_ver),
1655                        IWL_UCODE_MINOR(priv->ucode_ver),
1656                        IWL_UCODE_API(priv->ucode_ver),
1657                        IWL_UCODE_SERIAL(priv->ucode_ver));
1658
1659         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1660                        priv->ucode_ver);
1661         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1662                        inst_size);
1663         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1664                        data_size);
1665         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1666                        init_size);
1667         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1668                        init_data_size);
1669         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1670                        boot_size);
1671
1672         /* Verify size of file vs. image size info in file's header */
1673         if (ucode_raw->size < sizeof(*ucode) +
1674                 inst_size + data_size + init_size +
1675                 init_data_size + boot_size) {
1676
1677                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1678                                (int)ucode_raw->size);
1679                 ret = -EINVAL;
1680                 goto err_release;
1681         }
1682
1683         /* Verify that uCode images will fit in card's SRAM */
1684         if (inst_size > priv->hw_params.max_inst_size) {
1685                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1686                                inst_size);
1687                 ret = -EINVAL;
1688                 goto err_release;
1689         }
1690
1691         if (data_size > priv->hw_params.max_data_size) {
1692                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1693                                 data_size);
1694                 ret = -EINVAL;
1695                 goto err_release;
1696         }
1697         if (init_size > priv->hw_params.max_inst_size) {
1698                 IWL_DEBUG_INFO
1699                     ("uCode init instr len %d too large to fit in\n",
1700                       init_size);
1701                 ret = -EINVAL;
1702                 goto err_release;
1703         }
1704         if (init_data_size > priv->hw_params.max_data_size) {
1705                 IWL_DEBUG_INFO
1706                     ("uCode init data len %d too large to fit in\n",
1707                       init_data_size);
1708                 ret = -EINVAL;
1709                 goto err_release;
1710         }
1711         if (boot_size > priv->hw_params.max_bsm_size) {
1712                 IWL_DEBUG_INFO
1713                     ("uCode boot instr len %d too large to fit in\n",
1714                       boot_size);
1715                 ret = -EINVAL;
1716                 goto err_release;
1717         }
1718
1719         /* Allocate ucode buffers for card's bus-master loading ... */
1720
1721         /* Runtime instructions and 2 copies of data:
1722          * 1) unmodified from disk
1723          * 2) backup cache for save/restore during power-downs */
1724         priv->ucode_code.len = inst_size;
1725         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1726
1727         priv->ucode_data.len = data_size;
1728         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1729
1730         priv->ucode_data_backup.len = data_size;
1731         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1732
1733         /* Initialization instructions and data */
1734         if (init_size && init_data_size) {
1735                 priv->ucode_init.len = init_size;
1736                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1737
1738                 priv->ucode_init_data.len = init_data_size;
1739                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1740
1741                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1742                         goto err_pci_alloc;
1743         }
1744
1745         /* Bootstrap (instructions only, no data) */
1746         if (boot_size) {
1747                 priv->ucode_boot.len = boot_size;
1748                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1749
1750                 if (!priv->ucode_boot.v_addr)
1751                         goto err_pci_alloc;
1752         }
1753
1754         /* Copy images into buffers for card's bus-master reads ... */
1755
1756         /* Runtime instructions (first block of data in file) */
1757         src = &ucode->data[0];
1758         len = priv->ucode_code.len;
1759         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1760         memcpy(priv->ucode_code.v_addr, src, len);
1761         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1762                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1763
1764         /* Runtime data (2nd block)
1765          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1766         src = &ucode->data[inst_size];
1767         len = priv->ucode_data.len;
1768         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1769         memcpy(priv->ucode_data.v_addr, src, len);
1770         memcpy(priv->ucode_data_backup.v_addr, src, len);
1771
1772         /* Initialization instructions (3rd block) */
1773         if (init_size) {
1774                 src = &ucode->data[inst_size + data_size];
1775                 len = priv->ucode_init.len;
1776                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1777                                 len);
1778                 memcpy(priv->ucode_init.v_addr, src, len);
1779         }
1780
1781         /* Initialization data (4th block) */
1782         if (init_data_size) {
1783                 src = &ucode->data[inst_size + data_size + init_size];
1784                 len = priv->ucode_init_data.len;
1785                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1786                                len);
1787                 memcpy(priv->ucode_init_data.v_addr, src, len);
1788         }
1789
1790         /* Bootstrap instructions (5th block) */
1791         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1792         len = priv->ucode_boot.len;
1793         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1794         memcpy(priv->ucode_boot.v_addr, src, len);
1795
1796         /* We have our copies now, allow OS release its copies */
1797         release_firmware(ucode_raw);
1798         return 0;
1799
1800  err_pci_alloc:
1801         IWL_ERROR("failed to allocate pci memory\n");
1802         ret = -ENOMEM;
1803         iwl_dealloc_ucode_pci(priv);
1804
1805  err_release:
1806         release_firmware(ucode_raw);
1807
1808  error:
1809         return ret;
1810 }
1811
1812 /* temporary */
1813 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1814                                  struct sk_buff *skb);
1815
1816 /**
1817  * iwl_alive_start - called after REPLY_ALIVE notification received
1818  *                   from protocol/runtime uCode (initialization uCode's
1819  *                   Alive gets handled by iwl_init_alive_start()).
1820  */
1821 static void iwl_alive_start(struct iwl_priv *priv)
1822 {
1823         int ret = 0;
1824
1825         IWL_DEBUG_INFO("Runtime Alive received.\n");
1826
1827         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1828                 /* We had an error bringing up the hardware, so take it
1829                  * all the way back down so we can try again */
1830                 IWL_DEBUG_INFO("Alive failed.\n");
1831                 goto restart;
1832         }
1833
1834         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1835          * This is a paranoid check, because we would not have gotten the
1836          * "runtime" alive if code weren't properly loaded.  */
1837         if (iwl_verify_ucode(priv)) {
1838                 /* Runtime instruction load was bad;
1839                  * take it all the way back down so we can try again */
1840                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1841                 goto restart;
1842         }
1843
1844         iwl_clear_stations_table(priv);
1845         ret = priv->cfg->ops->lib->alive_notify(priv);
1846         if (ret) {
1847                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1848                             ret);
1849                 goto restart;
1850         }
1851
1852         /* After the ALIVE response, we can send host commands to the uCode */
1853         set_bit(STATUS_ALIVE, &priv->status);
1854
1855         if (iwl_is_rfkill(priv))
1856                 return;
1857
1858         ieee80211_wake_queues(priv->hw);
1859
1860         priv->active_rate = priv->rates_mask;
1861         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1862
1863         if (iwl_is_associated(priv)) {
1864                 struct iwl_rxon_cmd *active_rxon =
1865                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1866
1867                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1868                        sizeof(priv->staging_rxon));
1869                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1870         } else {
1871                 /* Initialize our rx_config data */
1872                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1873                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1874         }
1875
1876         /* Configure Bluetooth device coexistence support */
1877         iwl_send_bt_config(priv);
1878
1879         iwl_reset_run_time_calib(priv);
1880
1881         /* Configure the adapter for unassociated operation */
1882         iwl_commit_rxon(priv);
1883
1884         /* At this point, the NIC is initialized and operational */
1885         iwl_rf_kill_ct_config(priv);
1886
1887         iwl_leds_register(priv);
1888
1889         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1890         set_bit(STATUS_READY, &priv->status);
1891         wake_up_interruptible(&priv->wait_command_queue);
1892
1893         if (priv->error_recovering)
1894                 iwl_error_recovery(priv);
1895
1896         iwl_power_update_mode(priv, 1);
1897
1898         /* reassociate for ADHOC mode */
1899         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1900                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1901                                                                 priv->vif);
1902                 if (beacon)
1903                         iwl_mac_beacon_update(priv->hw, beacon);
1904         }
1905
1906
1907         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1908                 iwl_set_mode(priv, priv->iw_mode);
1909
1910         return;
1911
1912  restart:
1913         queue_work(priv->workqueue, &priv->restart);
1914 }
1915
1916 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1917
1918 static void __iwl_down(struct iwl_priv *priv)
1919 {
1920         unsigned long flags;
1921         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1922
1923         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1924
1925         if (!exit_pending)
1926                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1927
1928         iwl_leds_unregister(priv);
1929
1930         iwl_clear_stations_table(priv);
1931
1932         /* Unblock any waiting calls */
1933         wake_up_interruptible_all(&priv->wait_command_queue);
1934
1935         /* Wipe out the EXIT_PENDING status bit if we are not actually
1936          * exiting the module */
1937         if (!exit_pending)
1938                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1939
1940         /* stop and reset the on-board processor */
1941         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1942
1943         /* tell the device to stop sending interrupts */
1944         spin_lock_irqsave(&priv->lock, flags);
1945         iwl_disable_interrupts(priv);
1946         spin_unlock_irqrestore(&priv->lock, flags);
1947         iwl_synchronize_irq(priv);
1948
1949         if (priv->mac80211_registered)
1950                 ieee80211_stop_queues(priv->hw);
1951
1952         /* If we have not previously called iwl_init() then
1953          * clear all bits but the RF Kill and SUSPEND bits and return */
1954         if (!iwl_is_init(priv)) {
1955                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1956                                         STATUS_RF_KILL_HW |
1957                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1958                                         STATUS_RF_KILL_SW |
1959                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1960                                         STATUS_GEO_CONFIGURED |
1961                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1962                                         STATUS_IN_SUSPEND |
1963                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1964                                         STATUS_EXIT_PENDING;
1965                 goto exit;
1966         }
1967
1968         /* ...otherwise clear out all the status bits but the RF Kill and
1969          * SUSPEND bits and continue taking the NIC down. */
1970         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1971                                 STATUS_RF_KILL_HW |
1972                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1973                                 STATUS_RF_KILL_SW |
1974                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1975                                 STATUS_GEO_CONFIGURED |
1976                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1977                                 STATUS_IN_SUSPEND |
1978                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1979                                 STATUS_FW_ERROR |
1980                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1981                                 STATUS_EXIT_PENDING;
1982
1983         spin_lock_irqsave(&priv->lock, flags);
1984         iwl_clear_bit(priv, CSR_GP_CNTRL,
1985                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1986         spin_unlock_irqrestore(&priv->lock, flags);
1987
1988         iwl_txq_ctx_stop(priv);
1989         iwl_rxq_stop(priv);
1990
1991         spin_lock_irqsave(&priv->lock, flags);
1992         if (!iwl_grab_nic_access(priv)) {
1993                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1994                                          APMG_CLK_VAL_DMA_CLK_RQT);
1995                 iwl_release_nic_access(priv);
1996         }
1997         spin_unlock_irqrestore(&priv->lock, flags);
1998
1999         udelay(5);
2000
2001         /* FIXME: apm_ops.suspend(priv) */
2002         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2003                 priv->cfg->ops->lib->apm_ops.stop(priv);
2004         else
2005                 priv->cfg->ops->lib->apm_ops.reset(priv);
2006  exit:
2007         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2008
2009         if (priv->ibss_beacon)
2010                 dev_kfree_skb(priv->ibss_beacon);
2011         priv->ibss_beacon = NULL;
2012
2013         /* clear out any free frames */
2014         iwl_clear_free_frames(priv);
2015 }
2016
2017 static void iwl_down(struct iwl_priv *priv)
2018 {
2019         mutex_lock(&priv->mutex);
2020         __iwl_down(priv);
2021         mutex_unlock(&priv->mutex);
2022
2023         iwl_cancel_deferred_work(priv);
2024 }
2025
2026 #define MAX_HW_RESTARTS 5
2027
2028 static int __iwl_up(struct iwl_priv *priv)
2029 {
2030         int i;
2031         int ret;
2032
2033         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2034                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2035                 return -EIO;
2036         }
2037
2038         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2039                 IWL_ERROR("ucode not available for device bringup\n");
2040                 return -EIO;
2041         }
2042
2043         /* If platform's RF_KILL switch is NOT set to KILL */
2044         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2045                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2046         else
2047                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2048
2049         if (iwl_is_rfkill(priv)) {
2050                 iwl_enable_interrupts(priv);
2051                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2052                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2053                 return 0;
2054         }
2055
2056         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2057
2058         ret = iwl_hw_nic_init(priv);
2059         if (ret) {
2060                 IWL_ERROR("Unable to init nic\n");
2061                 return ret;
2062         }
2063
2064         /* make sure rfkill handshake bits are cleared */
2065         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2066         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2067                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2068
2069         /* clear (again), then enable host interrupts */
2070         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2071         iwl_enable_interrupts(priv);
2072
2073         /* really make sure rfkill handshake bits are cleared */
2074         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2075         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2076
2077         /* Copy original ucode data image from disk into backup cache.
2078          * This will be used to initialize the on-board processor's
2079          * data SRAM for a clean start when the runtime program first loads. */
2080         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2081                priv->ucode_data.len);
2082
2083         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2084
2085                 iwl_clear_stations_table(priv);
2086
2087                 /* load bootstrap state machine,
2088                  * load bootstrap program into processor's memory,
2089                  * prepare to load the "initialize" uCode */
2090                 ret = priv->cfg->ops->lib->load_ucode(priv);
2091
2092                 if (ret) {
2093                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2094                         continue;
2095                 }
2096
2097                 /* Clear out the uCode error bit if it is set */
2098                 clear_bit(STATUS_FW_ERROR, &priv->status);
2099
2100                 /* start card; "initialize" will load runtime ucode */
2101                 iwl_nic_start(priv);
2102
2103                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2104
2105                 return 0;
2106         }
2107
2108         set_bit(STATUS_EXIT_PENDING, &priv->status);
2109         __iwl_down(priv);
2110         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2111
2112         /* tried to restart and config the device for as long as our
2113          * patience could withstand */
2114         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2115         return -EIO;
2116 }
2117
2118
2119 /*****************************************************************************
2120  *
2121  * Workqueue callbacks
2122  *
2123  *****************************************************************************/
2124
2125 static void iwl_bg_init_alive_start(struct work_struct *data)
2126 {
2127         struct iwl_priv *priv =
2128             container_of(data, struct iwl_priv, init_alive_start.work);
2129
2130         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2131                 return;
2132
2133         mutex_lock(&priv->mutex);
2134         priv->cfg->ops->lib->init_alive_start(priv);
2135         mutex_unlock(&priv->mutex);
2136 }
2137
2138 static void iwl_bg_alive_start(struct work_struct *data)
2139 {
2140         struct iwl_priv *priv =
2141             container_of(data, struct iwl_priv, alive_start.work);
2142
2143         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2144                 return;
2145
2146         mutex_lock(&priv->mutex);
2147         iwl_alive_start(priv);
2148         mutex_unlock(&priv->mutex);
2149 }
2150
2151 static void iwl_bg_rf_kill(struct work_struct *work)
2152 {
2153         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2154
2155         wake_up_interruptible(&priv->wait_command_queue);
2156
2157         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2158                 return;
2159
2160         mutex_lock(&priv->mutex);
2161
2162         if (!iwl_is_rfkill(priv)) {
2163                 IWL_DEBUG(IWL_DL_RF_KILL,
2164                           "HW and/or SW RF Kill no longer active, restarting "
2165                           "device\n");
2166                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2167                         queue_work(priv->workqueue, &priv->restart);
2168         } else {
2169                 /* make sure mac80211 stop sending Tx frame */
2170                 if (priv->mac80211_registered)
2171                         ieee80211_stop_queues(priv->hw);
2172
2173                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2174                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2175                                           "disabled by SW switch\n");
2176                 else
2177                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2178                                     "Kill switch must be turned off for "
2179                                     "wireless networking to work.\n");
2180         }
2181         mutex_unlock(&priv->mutex);
2182         iwl_rfkill_set_hw_state(priv);
2183 }
2184
2185 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2186 {
2187         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2188                         run_time_calib_work);
2189
2190         mutex_lock(&priv->mutex);
2191
2192         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2193             test_bit(STATUS_SCANNING, &priv->status)) {
2194                 mutex_unlock(&priv->mutex);
2195                 return;
2196         }
2197
2198         if (priv->start_calib) {
2199                 iwl_chain_noise_calibration(priv, &priv->statistics);
2200
2201                 iwl_sensitivity_calibration(priv, &priv->statistics);
2202         }
2203
2204         mutex_unlock(&priv->mutex);
2205         return;
2206 }
2207
2208 static void iwl_bg_up(struct work_struct *data)
2209 {
2210         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2211
2212         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2213                 return;
2214
2215         mutex_lock(&priv->mutex);
2216         __iwl_up(priv);
2217         mutex_unlock(&priv->mutex);
2218         iwl_rfkill_set_hw_state(priv);
2219 }
2220
2221 static void iwl_bg_restart(struct work_struct *data)
2222 {
2223         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2224
2225         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2226                 return;
2227
2228         iwl_down(priv);
2229         queue_work(priv->workqueue, &priv->up);
2230 }
2231
2232 static void iwl_bg_rx_replenish(struct work_struct *data)
2233 {
2234         struct iwl_priv *priv =
2235             container_of(data, struct iwl_priv, rx_replenish);
2236
2237         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2238                 return;
2239
2240         mutex_lock(&priv->mutex);
2241         iwl_rx_replenish(priv);
2242         mutex_unlock(&priv->mutex);
2243 }
2244
2245 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2246
2247 static void iwl_post_associate(struct iwl_priv *priv)
2248 {
2249         struct ieee80211_conf *conf = NULL;
2250         int ret = 0;
2251         unsigned long flags;
2252
2253         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2254                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2255                 return;
2256         }
2257
2258         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2259                         priv->assoc_id, priv->active_rxon.bssid_addr);
2260
2261
2262         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2263                 return;
2264
2265
2266         if (!priv->vif || !priv->is_open)
2267                 return;
2268
2269         iwl_power_cancel_timeout(priv);
2270         iwl_scan_cancel_timeout(priv, 200);
2271
2272         conf = ieee80211_get_hw_conf(priv->hw);
2273
2274         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2275         iwl_commit_rxon(priv);
2276
2277         iwl_setup_rxon_timing(priv);
2278         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2279                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2280         if (ret)
2281                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2282                             "Attempting to continue.\n");
2283
2284         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2285
2286         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2287
2288         iwl_set_rxon_chain(priv);
2289         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2290
2291         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2292                         priv->assoc_id, priv->beacon_int);
2293
2294         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2295                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2296         else
2297                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2298
2299         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2300                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2301                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2302                 else
2303                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2304
2305                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2306                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2307
2308         }
2309
2310         iwl_commit_rxon(priv);
2311
2312         switch (priv->iw_mode) {
2313         case NL80211_IFTYPE_STATION:
2314                 break;
2315
2316         case NL80211_IFTYPE_ADHOC:
2317
2318                 /* assume default assoc id */
2319                 priv->assoc_id = 1;
2320
2321                 iwl_rxon_add_station(priv, priv->bssid, 0);
2322                 iwl_send_beacon_cmd(priv);
2323
2324                 break;
2325
2326         default:
2327                 IWL_ERROR("%s Should not be called in %d mode\n",
2328                           __func__, priv->iw_mode);
2329                 break;
2330         }
2331
2332         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2333                 priv->assoc_station_added = 1;
2334
2335         spin_lock_irqsave(&priv->lock, flags);
2336         iwl_activate_qos(priv, 0);
2337         spin_unlock_irqrestore(&priv->lock, flags);
2338
2339         /* the chain noise calibration will enabled PM upon completion
2340          * If chain noise has already been run, then we need to enable
2341          * power management here */
2342         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2343                 iwl_power_enable_management(priv);
2344
2345         /* Enable Rx differential gain and sensitivity calibrations */
2346         iwl_chain_noise_reset(priv);
2347         priv->start_calib = 1;
2348
2349 }
2350
2351 /*****************************************************************************
2352  *
2353  * mac80211 entry point functions
2354  *
2355  *****************************************************************************/
2356
2357 #define UCODE_READY_TIMEOUT     (4 * HZ)
2358
2359 static int iwl_mac_start(struct ieee80211_hw *hw)
2360 {
2361         struct iwl_priv *priv = hw->priv;
2362         int ret;
2363         u16 pci_cmd;
2364
2365         IWL_DEBUG_MAC80211("enter\n");
2366
2367         if (pci_enable_device(priv->pci_dev)) {
2368                 IWL_ERROR("Fail to pci_enable_device\n");
2369                 return -ENODEV;
2370         }
2371         pci_restore_state(priv->pci_dev);
2372         pci_enable_msi(priv->pci_dev);
2373
2374         /* enable interrupts if needed: hw bug w/a */
2375         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2376         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2377                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2378                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2379         }
2380
2381         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2382                           DRV_NAME, priv);
2383         if (ret) {
2384                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2385                 goto out_disable_msi;
2386         }
2387
2388         /* we should be verifying the device is ready to be opened */
2389         mutex_lock(&priv->mutex);
2390
2391         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2392         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2393          * ucode filename and max sizes are card-specific. */
2394
2395         if (!priv->ucode_code.len) {
2396                 ret = iwl_read_ucode(priv);
2397                 if (ret) {
2398                         IWL_ERROR("Could not read microcode: %d\n", ret);
2399                         mutex_unlock(&priv->mutex);
2400                         goto out_release_irq;
2401                 }
2402         }
2403
2404         ret = __iwl_up(priv);
2405
2406         mutex_unlock(&priv->mutex);
2407
2408         iwl_rfkill_set_hw_state(priv);
2409
2410         if (ret)
2411                 goto out_release_irq;
2412
2413         if (iwl_is_rfkill(priv))
2414                 goto out;
2415
2416         IWL_DEBUG_INFO("Start UP work done.\n");
2417
2418         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2419                 return 0;
2420
2421         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2422          * mac80211 will not be run successfully. */
2423         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2424                         test_bit(STATUS_READY, &priv->status),
2425                         UCODE_READY_TIMEOUT);
2426         if (!ret) {
2427                 if (!test_bit(STATUS_READY, &priv->status)) {
2428                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2429                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2430                         ret = -ETIMEDOUT;
2431                         goto out_release_irq;
2432                 }
2433         }
2434
2435 out:
2436         priv->is_open = 1;
2437         IWL_DEBUG_MAC80211("leave\n");
2438         return 0;
2439
2440 out_release_irq:
2441         free_irq(priv->pci_dev->irq, priv);
2442 out_disable_msi:
2443         pci_disable_msi(priv->pci_dev);
2444         pci_disable_device(priv->pci_dev);
2445         priv->is_open = 0;
2446         IWL_DEBUG_MAC80211("leave - failed\n");
2447         return ret;
2448 }
2449
2450 static void iwl_mac_stop(struct ieee80211_hw *hw)
2451 {
2452         struct iwl_priv *priv = hw->priv;
2453
2454         IWL_DEBUG_MAC80211("enter\n");
2455
2456         if (!priv->is_open) {
2457                 IWL_DEBUG_MAC80211("leave - skip\n");
2458                 return;
2459         }
2460
2461         priv->is_open = 0;
2462
2463         if (iwl_is_ready_rf(priv)) {
2464                 /* stop mac, cancel any scan request and clear
2465                  * RXON_FILTER_ASSOC_MSK BIT
2466                  */
2467                 mutex_lock(&priv->mutex);
2468                 iwl_scan_cancel_timeout(priv, 100);
2469                 mutex_unlock(&priv->mutex);
2470         }
2471
2472         iwl_down(priv);
2473
2474         flush_workqueue(priv->workqueue);
2475         free_irq(priv->pci_dev->irq, priv);
2476         pci_disable_msi(priv->pci_dev);
2477         pci_save_state(priv->pci_dev);
2478         pci_disable_device(priv->pci_dev);
2479
2480         IWL_DEBUG_MAC80211("leave\n");
2481 }
2482
2483 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2484 {
2485         struct iwl_priv *priv = hw->priv;
2486
2487         IWL_DEBUG_MACDUMP("enter\n");
2488
2489         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2490                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2491
2492         if (iwl_tx_skb(priv, skb))
2493                 dev_kfree_skb_any(skb);
2494
2495         IWL_DEBUG_MACDUMP("leave\n");
2496         return 0;
2497 }
2498
2499 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2500                                  struct ieee80211_if_init_conf *conf)
2501 {
2502         struct iwl_priv *priv = hw->priv;
2503         unsigned long flags;
2504
2505         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2506
2507         if (priv->vif) {
2508                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2509                 return -EOPNOTSUPP;
2510         }
2511
2512         spin_lock_irqsave(&priv->lock, flags);
2513         priv->vif = conf->vif;
2514         priv->iw_mode = conf->type;
2515
2516         spin_unlock_irqrestore(&priv->lock, flags);
2517
2518         mutex_lock(&priv->mutex);
2519
2520         if (conf->mac_addr) {
2521                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2522                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2523         }
2524
2525         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2526                 /* we are not ready, will run again when ready */
2527                 set_bit(STATUS_MODE_PENDING, &priv->status);
2528
2529         mutex_unlock(&priv->mutex);
2530
2531         IWL_DEBUG_MAC80211("leave\n");
2532         return 0;
2533 }
2534
2535 /**
2536  * iwl_mac_config - mac80211 config callback
2537  *
2538  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2539  * be set inappropriately and the driver currently sets the hardware up to
2540  * use it whenever needed.
2541  */
2542 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2543 {
2544         struct iwl_priv *priv = hw->priv;
2545         const struct iwl_channel_info *ch_info;
2546         struct ieee80211_conf *conf = &hw->conf;
2547         unsigned long flags;
2548         int ret = 0;
2549         u16 channel;
2550
2551         mutex_lock(&priv->mutex);
2552         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2553
2554         priv->current_ht_config.is_ht = conf->ht.enabled;
2555
2556         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2557                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2558                 goto out;
2559         }
2560
2561         if (!conf->radio_enabled)
2562                 iwl_radio_kill_sw_disable_radio(priv);
2563
2564         if (!iwl_is_ready(priv)) {
2565                 IWL_DEBUG_MAC80211("leave - not ready\n");
2566                 ret = -EIO;
2567                 goto out;
2568         }
2569
2570         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2571                      test_bit(STATUS_SCANNING, &priv->status))) {
2572                 IWL_DEBUG_MAC80211("leave - scanning\n");
2573                 mutex_unlock(&priv->mutex);
2574                 return 0;
2575         }
2576
2577         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2578         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2579         if (!is_channel_valid(ch_info)) {
2580                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2581                 ret = -EINVAL;
2582                 goto out;
2583         }
2584
2585         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2586             !is_channel_ibss(ch_info)) {
2587                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2588                         conf->channel->hw_value, conf->channel->band);
2589                 ret = -EINVAL;
2590                 goto out;
2591         }
2592
2593         spin_lock_irqsave(&priv->lock, flags);
2594
2595
2596         /* if we are switching from ht to 2.4 clear flags
2597          * from any ht related info since 2.4 does not
2598          * support ht */
2599         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2600 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2601             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2602 #endif
2603         )
2604                 priv->staging_rxon.flags = 0;
2605
2606         iwl_set_rxon_channel(priv, conf->channel);
2607
2608         iwl_set_flags_for_band(priv, conf->channel->band);
2609
2610         /* The list of supported rates and rate mask can be different
2611          * for each band; since the band may have changed, reset
2612          * the rate mask to what mac80211 lists */
2613         iwl_set_rate(priv);
2614
2615         spin_unlock_irqrestore(&priv->lock, flags);
2616
2617 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2618         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2619                 iwl_hw_channel_switch(priv, conf->channel);
2620                 goto out;
2621         }
2622 #endif
2623
2624         if (!conf->radio_enabled) {
2625                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2626                 goto out;
2627         }
2628
2629         if (iwl_is_rfkill(priv)) {
2630                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2631                 ret = -EIO;
2632                 goto out;
2633         }
2634
2635         if (conf->flags & IEEE80211_CONF_PS)
2636                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2637         else
2638                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2639         if (ret)
2640                 IWL_DEBUG_MAC80211("Error setting power level\n");
2641
2642         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2643                            priv->tx_power_user_lmt, conf->power_level);
2644
2645         iwl_set_tx_power(priv, conf->power_level, false);
2646
2647         iwl_set_rate(priv);
2648
2649         if (memcmp(&priv->active_rxon,
2650                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2651                 iwl_commit_rxon(priv);
2652         else
2653                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2654
2655         IWL_DEBUG_MAC80211("leave\n");
2656
2657 out:
2658         mutex_unlock(&priv->mutex);
2659         return ret;
2660 }
2661
2662 static void iwl_config_ap(struct iwl_priv *priv)
2663 {
2664         int ret = 0;
2665         unsigned long flags;
2666
2667         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2668                 return;
2669
2670         /* The following should be done only at AP bring up */
2671         if (!iwl_is_associated(priv)) {
2672
2673                 /* RXON - unassoc (to set timing command) */
2674                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2675                 iwl_commit_rxon(priv);
2676
2677                 /* RXON Timing */
2678                 iwl_setup_rxon_timing(priv);
2679                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2680                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2681                 if (ret)
2682                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2683                                         "Attempting to continue.\n");
2684
2685                 iwl_set_rxon_chain(priv);
2686
2687                 /* FIXME: what should be the assoc_id for AP? */
2688                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2689                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2690                         priv->staging_rxon.flags |=
2691                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2692                 else
2693                         priv->staging_rxon.flags &=
2694                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2695
2696                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2697                         if (priv->assoc_capability &
2698                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2699                                 priv->staging_rxon.flags |=
2700                                         RXON_FLG_SHORT_SLOT_MSK;
2701                         else
2702                                 priv->staging_rxon.flags &=
2703                                         ~RXON_FLG_SHORT_SLOT_MSK;
2704
2705                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2706                                 priv->staging_rxon.flags &=
2707                                         ~RXON_FLG_SHORT_SLOT_MSK;
2708                 }
2709                 /* restore RXON assoc */
2710                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2711                 iwl_commit_rxon(priv);
2712                 spin_lock_irqsave(&priv->lock, flags);
2713                 iwl_activate_qos(priv, 1);
2714                 spin_unlock_irqrestore(&priv->lock, flags);
2715                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2716         }
2717         iwl_send_beacon_cmd(priv);
2718
2719         /* FIXME - we need to add code here to detect a totally new
2720          * configuration, reset the AP, unassoc, rxon timing, assoc,
2721          * clear sta table, add BCAST sta... */
2722 }
2723
2724
2725 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2726                                         struct ieee80211_vif *vif,
2727                                     struct ieee80211_if_conf *conf)
2728 {
2729         struct iwl_priv *priv = hw->priv;
2730         int rc;
2731
2732         if (conf == NULL)
2733                 return -EIO;
2734
2735         if (priv->vif != vif) {
2736                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2737                 return 0;
2738         }
2739
2740         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2741             conf->changed & IEEE80211_IFCC_BEACON) {
2742                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2743                 if (!beacon)
2744                         return -ENOMEM;
2745                 mutex_lock(&priv->mutex);
2746                 rc = iwl_mac_beacon_update(hw, beacon);
2747                 mutex_unlock(&priv->mutex);
2748                 if (rc)
2749                         return rc;
2750         }
2751
2752         if (!iwl_is_alive(priv))
2753                 return -EAGAIN;
2754
2755         mutex_lock(&priv->mutex);
2756
2757         if (conf->bssid)
2758                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2759
2760 /*
2761  * very dubious code was here; the probe filtering flag is never set:
2762  *
2763         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2764             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2765  */
2766
2767         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2768                 if (!conf->bssid) {
2769                         conf->bssid = priv->mac_addr;
2770                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2771                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2772                                            conf->bssid);
2773                 }
2774                 if (priv->ibss_beacon)
2775                         dev_kfree_skb(priv->ibss_beacon);
2776
2777                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2778         }
2779
2780         if (iwl_is_rfkill(priv))
2781                 goto done;
2782
2783         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2784             !is_multicast_ether_addr(conf->bssid)) {
2785                 /* If there is currently a HW scan going on in the background
2786                  * then we need to cancel it else the RXON below will fail. */
2787                 if (iwl_scan_cancel_timeout(priv, 100)) {
2788                         IWL_WARNING("Aborted scan still in progress "
2789                                     "after 100ms\n");
2790                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2791                         mutex_unlock(&priv->mutex);
2792                         return -EAGAIN;
2793                 }
2794                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2795
2796                 /* TODO: Audit driver for usage of these members and see
2797                  * if mac80211 deprecates them (priv->bssid looks like it
2798                  * shouldn't be there, but I haven't scanned the IBSS code
2799                  * to verify) - jpk */
2800                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2801
2802                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2803                         iwl_config_ap(priv);
2804                 else {
2805                         rc = iwl_commit_rxon(priv);
2806                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2807                                 iwl_rxon_add_station(
2808                                         priv, priv->active_rxon.bssid_addr, 1);
2809                 }
2810
2811         } else {
2812                 iwl_scan_cancel_timeout(priv, 100);
2813                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2814                 iwl_commit_rxon(priv);
2815         }
2816
2817  done:
2818         IWL_DEBUG_MAC80211("leave\n");
2819         mutex_unlock(&priv->mutex);
2820
2821         return 0;
2822 }
2823
2824 static void iwl_configure_filter(struct ieee80211_hw *hw,
2825                                  unsigned int changed_flags,
2826                                  unsigned int *total_flags,
2827                                  int mc_count, struct dev_addr_list *mc_list)
2828 {
2829         struct iwl_priv *priv = hw->priv;
2830         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2831
2832         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2833                         changed_flags, *total_flags);
2834
2835         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2836                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2837                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2838                 else
2839                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2840         }
2841         if (changed_flags & FIF_ALLMULTI) {
2842                 if (*total_flags & FIF_ALLMULTI)
2843                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2844                 else
2845                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2846         }
2847         if (changed_flags & FIF_CONTROL) {
2848                 if (*total_flags & FIF_CONTROL)
2849                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2850                 else
2851                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2852         }
2853         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2854                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2855                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2856                 else
2857                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2858         }
2859
2860         /* We avoid iwl_commit_rxon here to commit the new filter flags
2861          * since mac80211 will call ieee80211_hw_config immediately.
2862          * (mc_list is not supported at this time). Otherwise, we need to
2863          * queue a background iwl_commit_rxon work.
2864          */
2865
2866         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2867                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2868 }
2869
2870 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2871                                      struct ieee80211_if_init_conf *conf)
2872 {
2873         struct iwl_priv *priv = hw->priv;
2874
2875         IWL_DEBUG_MAC80211("enter\n");
2876
2877         mutex_lock(&priv->mutex);
2878
2879         if (iwl_is_ready_rf(priv)) {
2880                 iwl_scan_cancel_timeout(priv, 100);
2881                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2882                 iwl_commit_rxon(priv);
2883         }
2884         if (priv->vif == conf->vif) {
2885                 priv->vif = NULL;
2886                 memset(priv->bssid, 0, ETH_ALEN);
2887         }
2888         mutex_unlock(&priv->mutex);
2889
2890         IWL_DEBUG_MAC80211("leave\n");
2891
2892 }
2893
2894 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2895 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2896                                      struct ieee80211_vif *vif,
2897                                      struct ieee80211_bss_conf *bss_conf,
2898                                      u32 changes)
2899 {
2900         struct iwl_priv *priv = hw->priv;
2901
2902         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2903
2904         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2905                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2906                                    bss_conf->use_short_preamble);
2907                 if (bss_conf->use_short_preamble)
2908                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2909                 else
2910                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2911         }
2912
2913         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2914                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2915                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2916                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2917                 else
2918                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2919         }
2920
2921         if (changes & BSS_CHANGED_HT) {
2922                 iwl_ht_conf(priv, bss_conf);
2923                 iwl_set_rxon_chain(priv);
2924         }
2925
2926         if (changes & BSS_CHANGED_ASSOC) {
2927                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2928                 /* This should never happen as this function should
2929                  * never be called from interrupt context. */
2930                 if (WARN_ON_ONCE(in_interrupt()))
2931                         return;
2932                 if (bss_conf->assoc) {
2933                         priv->assoc_id = bss_conf->aid;
2934                         priv->beacon_int = bss_conf->beacon_int;
2935                         priv->power_data.dtim_period = bss_conf->dtim_period;
2936                         priv->timestamp = bss_conf->timestamp;
2937                         priv->assoc_capability = bss_conf->assoc_capability;
2938
2939                         /* we have just associated, don't start scan too early
2940                          * leave time for EAPOL exchange to complete
2941                          */
2942                         priv->next_scan_jiffies = jiffies +
2943                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2944                         mutex_lock(&priv->mutex);
2945                         iwl_post_associate(priv);
2946                         mutex_unlock(&priv->mutex);
2947                 } else {
2948                         priv->assoc_id = 0;
2949                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2950                 }
2951         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2952                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2953                         iwl_send_rxon_assoc(priv);
2954         }
2955
2956 }
2957
2958 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2959 {
2960         unsigned long flags;
2961         struct iwl_priv *priv = hw->priv;
2962         int ret;
2963
2964         IWL_DEBUG_MAC80211("enter\n");
2965
2966         mutex_lock(&priv->mutex);
2967         spin_lock_irqsave(&priv->lock, flags);
2968
2969         if (!iwl_is_ready_rf(priv)) {
2970                 ret = -EIO;
2971                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2972                 goto out_unlock;
2973         }
2974
2975         /* We don't schedule scan within next_scan_jiffies period.
2976          * Avoid scanning during possible EAPOL exchange, return
2977          * success immediately.
2978          */
2979         if (priv->next_scan_jiffies &&
2980             time_after(priv->next_scan_jiffies, jiffies)) {
2981                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2982                 queue_work(priv->workqueue, &priv->scan_completed);
2983                 ret = 0;
2984                 goto out_unlock;
2985         }
2986
2987         /* if we just finished scan ask for delay */
2988         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2989             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2990                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2991                 queue_work(priv->workqueue, &priv->scan_completed);
2992                 ret = 0;
2993                 goto out_unlock;
2994         }
2995
2996         if (ssid_len) {
2997                 priv->one_direct_scan = 1;
2998                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2999                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3000         } else {
3001                 priv->one_direct_scan = 0;
3002         }
3003
3004         ret = iwl_scan_initiate(priv);
3005
3006         IWL_DEBUG_MAC80211("leave\n");
3007
3008 out_unlock:
3009         spin_unlock_irqrestore(&priv->lock, flags);
3010         mutex_unlock(&priv->mutex);
3011
3012         return ret;
3013 }
3014
3015 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3016                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3017                         u32 iv32, u16 *phase1key)
3018 {
3019
3020         struct iwl_priv *priv = hw->priv;
3021         IWL_DEBUG_MAC80211("enter\n");
3022
3023         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3024
3025         IWL_DEBUG_MAC80211("leave\n");
3026 }
3027
3028 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3029                            const u8 *local_addr, const u8 *addr,
3030                            struct ieee80211_key_conf *key)
3031 {
3032         struct iwl_priv *priv = hw->priv;
3033         int ret = 0;
3034         u8 sta_id = IWL_INVALID_STATION;
3035         u8 is_default_wep_key = 0;
3036
3037         IWL_DEBUG_MAC80211("enter\n");
3038
3039         if (priv->hw_params.sw_crypto) {
3040                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3041                 return -EOPNOTSUPP;
3042         }
3043
3044         if (is_zero_ether_addr(addr))
3045                 /* only support pairwise keys */
3046                 return -EOPNOTSUPP;
3047
3048         sta_id = iwl_find_station(priv, addr);
3049         if (sta_id == IWL_INVALID_STATION) {
3050                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3051                                    addr);
3052                 return -EINVAL;
3053
3054         }
3055
3056         mutex_lock(&priv->mutex);
3057         iwl_scan_cancel_timeout(priv, 100);
3058         mutex_unlock(&priv->mutex);
3059
3060         /* If we are getting WEP group key and we didn't receive any key mapping
3061          * so far, we are in legacy wep mode (group key only), otherwise we are
3062          * in 1X mode.
3063          * In legacy wep mode, we use another host command to the uCode */
3064         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3065                 priv->iw_mode != NL80211_IFTYPE_AP) {
3066                 if (cmd == SET_KEY)
3067                         is_default_wep_key = !priv->key_mapping_key;
3068                 else
3069                         is_default_wep_key =
3070                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3071         }
3072
3073         switch (cmd) {
3074         case SET_KEY:
3075                 if (is_default_wep_key)
3076                         ret = iwl_set_default_wep_key(priv, key);
3077                 else
3078                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3079
3080                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3081                 break;
3082         case DISABLE_KEY:
3083                 if (is_default_wep_key)
3084                         ret = iwl_remove_default_wep_key(priv, key);
3085                 else
3086                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3087
3088                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3089                 break;
3090         default:
3091                 ret = -EINVAL;
3092         }
3093
3094         IWL_DEBUG_MAC80211("leave\n");
3095
3096         return ret;
3097 }
3098
3099 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3100                            const struct ieee80211_tx_queue_params *params)
3101 {
3102         struct iwl_priv *priv = hw->priv;
3103         unsigned long flags;
3104         int q;
3105
3106         IWL_DEBUG_MAC80211("enter\n");
3107
3108         if (!iwl_is_ready_rf(priv)) {
3109                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3110                 return -EIO;
3111         }
3112
3113         if (queue >= AC_NUM) {
3114                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3115                 return 0;
3116         }
3117
3118         q = AC_NUM - 1 - queue;
3119
3120         spin_lock_irqsave(&priv->lock, flags);
3121
3122         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3123         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3124         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3125         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3126                         cpu_to_le16((params->txop * 32));
3127
3128         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3129         priv->qos_data.qos_active = 1;
3130
3131         if (priv->iw_mode == NL80211_IFTYPE_AP)
3132                 iwl_activate_qos(priv, 1);
3133         else if (priv->assoc_id && iwl_is_associated(priv))
3134                 iwl_activate_qos(priv, 0);
3135
3136         spin_unlock_irqrestore(&priv->lock, flags);
3137
3138         IWL_DEBUG_MAC80211("leave\n");
3139         return 0;
3140 }
3141
3142 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3143                              enum ieee80211_ampdu_mlme_action action,
3144                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3145 {
3146         struct iwl_priv *priv = hw->priv;
3147
3148         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3149                      sta->addr, tid);
3150
3151         if (!(priv->cfg->sku & IWL_SKU_N))
3152                 return -EACCES;
3153
3154         switch (action) {
3155         case IEEE80211_AMPDU_RX_START:
3156                 IWL_DEBUG_HT("start Rx\n");
3157                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3158         case IEEE80211_AMPDU_RX_STOP:
3159                 IWL_DEBUG_HT("stop Rx\n");
3160                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3161         case IEEE80211_AMPDU_TX_START:
3162                 IWL_DEBUG_HT("start Tx\n");
3163                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3164         case IEEE80211_AMPDU_TX_STOP:
3165                 IWL_DEBUG_HT("stop Tx\n");
3166                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3167         default:
3168                 IWL_DEBUG_HT("unknown\n");
3169                 return -EINVAL;
3170                 break;
3171         }
3172         return 0;
3173 }
3174
3175 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3176                                 struct ieee80211_tx_queue_stats *stats)
3177 {
3178         struct iwl_priv *priv = hw->priv;
3179         int i, avail;
3180         struct iwl_tx_queue *txq;
3181         struct iwl_queue *q;
3182         unsigned long flags;
3183
3184         IWL_DEBUG_MAC80211("enter\n");
3185
3186         if (!iwl_is_ready_rf(priv)) {
3187                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3188                 return -EIO;
3189         }
3190
3191         spin_lock_irqsave(&priv->lock, flags);
3192
3193         for (i = 0; i < AC_NUM; i++) {
3194                 txq = &priv->txq[i];
3195                 q = &txq->q;
3196                 avail = iwl_queue_space(q);
3197
3198                 stats[i].len = q->n_window - avail;
3199                 stats[i].limit = q->n_window - q->high_mark;
3200                 stats[i].count = q->n_window;
3201
3202         }
3203         spin_unlock_irqrestore(&priv->lock, flags);
3204
3205         IWL_DEBUG_MAC80211("leave\n");
3206
3207         return 0;
3208 }
3209
3210 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3211                              struct ieee80211_low_level_stats *stats)
3212 {
3213         struct iwl_priv *priv = hw->priv;
3214
3215         priv = hw->priv;
3216         IWL_DEBUG_MAC80211("enter\n");
3217         IWL_DEBUG_MAC80211("leave\n");
3218
3219         return 0;
3220 }
3221
3222 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3223 {
3224         struct iwl_priv *priv = hw->priv;
3225         unsigned long flags;
3226
3227         mutex_lock(&priv->mutex);
3228         IWL_DEBUG_MAC80211("enter\n");
3229
3230         spin_lock_irqsave(&priv->lock, flags);
3231         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3232         spin_unlock_irqrestore(&priv->lock, flags);
3233
3234         iwl_reset_qos(priv);
3235
3236         spin_lock_irqsave(&priv->lock, flags);
3237         priv->assoc_id = 0;
3238         priv->assoc_capability = 0;
3239         priv->assoc_station_added = 0;
3240
3241         /* new association get rid of ibss beacon skb */
3242         if (priv->ibss_beacon)
3243                 dev_kfree_skb(priv->ibss_beacon);
3244
3245         priv->ibss_beacon = NULL;
3246
3247         priv->beacon_int = priv->hw->conf.beacon_int;
3248         priv->timestamp = 0;
3249         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3250                 priv->beacon_int = 0;
3251
3252         spin_unlock_irqrestore(&priv->lock, flags);
3253
3254         if (!iwl_is_ready_rf(priv)) {
3255                 IWL_DEBUG_MAC80211("leave - not ready\n");
3256                 mutex_unlock(&priv->mutex);
3257                 return;
3258         }
3259
3260         /* we are restarting association process
3261          * clear RXON_FILTER_ASSOC_MSK bit
3262          */
3263         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3264                 iwl_scan_cancel_timeout(priv, 100);
3265                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3266                 iwl_commit_rxon(priv);
3267         }
3268
3269         iwl_power_update_mode(priv, 0);
3270
3271         /* Per mac80211.h: This is only used in IBSS mode... */
3272         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3273
3274                 /* switch to CAM during association period.
3275                  * the ucode will block any association/authentication
3276                  * frome during assiciation period if it can not hear
3277                  * the AP because of PM. the timer enable PM back is
3278                  * association do not complete
3279                  */
3280                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3281                                                      IEEE80211_CHAN_RADAR))
3282                                 iwl_power_disable_management(priv, 3000);
3283
3284                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3285                 mutex_unlock(&priv->mutex);
3286                 return;
3287         }
3288
3289         iwl_set_rate(priv);
3290
3291         mutex_unlock(&priv->mutex);
3292
3293         IWL_DEBUG_MAC80211("leave\n");
3294 }
3295
3296 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3297 {
3298         struct iwl_priv *priv = hw->priv;
3299         unsigned long flags;
3300         __le64 timestamp;
3301
3302         IWL_DEBUG_MAC80211("enter\n");
3303
3304         if (!iwl_is_ready_rf(priv)) {
3305                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3306                 return -EIO;
3307         }
3308
3309         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3310                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3311                 return -EIO;
3312         }
3313
3314         spin_lock_irqsave(&priv->lock, flags);
3315
3316         if (priv->ibss_beacon)
3317                 dev_kfree_skb(priv->ibss_beacon);
3318
3319         priv->ibss_beacon = skb;
3320
3321         priv->assoc_id = 0;
3322         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3323         priv->timestamp = le64_to_cpu(timestamp);
3324
3325         IWL_DEBUG_MAC80211("leave\n");
3326         spin_unlock_irqrestore(&priv->lock, flags);
3327
3328         iwl_reset_qos(priv);
3329
3330         iwl_post_associate(priv);
3331
3332
3333         return 0;
3334 }
3335
3336 /*****************************************************************************
3337  *
3338  * sysfs attributes
3339  *
3340  *****************************************************************************/
3341
3342 #ifdef CONFIG_IWLWIFI_DEBUG
3343
3344 /*
3345  * The following adds a new attribute to the sysfs representation
3346  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3347  * used for controlling the debug level.
3348  *
3349  * See the level definitions in iwl for details.
3350  */
3351
3352 static ssize_t show_debug_level(struct device *d,
3353                                 struct device_attribute *attr, char *buf)
3354 {
3355         struct iwl_priv *priv = d->driver_data;
3356
3357         return sprintf(buf, "0x%08X\n", priv->debug_level);
3358 }
3359 static ssize_t store_debug_level(struct device *d,
3360                                 struct device_attribute *attr,
3361                                  const char *buf, size_t count)
3362 {
3363         struct iwl_priv *priv = d->driver_data;
3364         unsigned long val;
3365         int ret;
3366
3367         ret = strict_strtoul(buf, 0, &val);
3368         if (ret)
3369                 printk(KERN_INFO DRV_NAME
3370                        ": %s is not in hex or decimal form.\n", buf);
3371         else
3372                 priv->debug_level = val;
3373
3374         return strnlen(buf, count);
3375 }
3376
3377 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3378                         show_debug_level, store_debug_level);
3379
3380
3381 #endif /* CONFIG_IWLWIFI_DEBUG */
3382
3383
3384 static ssize_t show_version(struct device *d,
3385                                 struct device_attribute *attr, char *buf)
3386 {
3387         struct iwl_priv *priv = d->driver_data;
3388         struct iwl_alive_resp *palive = &priv->card_alive;
3389         ssize_t pos = 0;
3390         u16 eeprom_ver;
3391
3392         if (palive->is_valid)
3393                 pos += sprintf(buf + pos,
3394                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3395                                 "fw type: 0x%01X 0x%01X\n",
3396                                 palive->ucode_major, palive->ucode_minor,
3397                                 palive->sw_rev[0], palive->sw_rev[1],
3398                                 palive->ver_type, palive->ver_subtype);
3399         else
3400                 pos += sprintf(buf + pos, "fw not loaded\n");
3401
3402         if (priv->eeprom) {
3403                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3404                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3405                                  eeprom_ver);
3406         } else {
3407                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3408         }
3409
3410         return pos;
3411 }
3412
3413 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3414
3415 static ssize_t show_temperature(struct device *d,
3416                                 struct device_attribute *attr, char *buf)
3417 {
3418         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3419
3420         if (!iwl_is_alive(priv))
3421                 return -EAGAIN;
3422
3423         return sprintf(buf, "%d\n", priv->temperature);
3424 }
3425
3426 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3427
3428 static ssize_t show_tx_power(struct device *d,
3429                              struct device_attribute *attr, char *buf)
3430 {
3431         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3432         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3433 }
3434
3435 static ssize_t store_tx_power(struct device *d,
3436                               struct device_attribute *attr,
3437                               const char *buf, size_t count)
3438 {
3439         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3440         unsigned long val;
3441         int ret;
3442
3443         ret = strict_strtoul(buf, 10, &val);
3444         if (ret)
3445                 printk(KERN_INFO DRV_NAME
3446                        ": %s is not in decimal form.\n", buf);
3447         else
3448                 iwl_set_tx_power(priv, val, false);
3449
3450         return count;
3451 }
3452
3453 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3454
3455 static ssize_t show_flags(struct device *d,
3456                           struct device_attribute *attr, char *buf)
3457 {
3458         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3459
3460         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3461 }
3462
3463 static ssize_t store_flags(struct device *d,
3464                            struct device_attribute *attr,
3465                            const char *buf, size_t count)
3466 {
3467         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3468         unsigned long val;
3469         u32 flags;
3470         int ret = strict_strtoul(buf, 0, &val);
3471         if (ret)
3472                 return ret;
3473         flags = (u32)val;
3474
3475         mutex_lock(&priv->mutex);
3476         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3477                 /* Cancel any currently running scans... */
3478                 if (iwl_scan_cancel_timeout(priv, 100))
3479                         IWL_WARNING("Could not cancel scan.\n");
3480                 else {
3481                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3482                         priv->staging_rxon.flags = cpu_to_le32(flags);
3483                         iwl_commit_rxon(priv);
3484                 }
3485         }
3486         mutex_unlock(&priv->mutex);
3487
3488         return count;
3489 }
3490
3491 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3492
3493 static ssize_t show_filter_flags(struct device *d,
3494                                  struct device_attribute *attr, char *buf)
3495 {
3496         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3497
3498         return sprintf(buf, "0x%04X\n",
3499                 le32_to_cpu(priv->active_rxon.filter_flags));
3500 }
3501
3502 static ssize_t store_filter_flags(struct device *d,
3503                                   struct device_attribute *attr,
3504                                   const char *buf, size_t count)
3505 {
3506         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3507         unsigned long val;
3508         u32 filter_flags;
3509         int ret = strict_strtoul(buf, 0, &val);
3510         if (ret)
3511                 return ret;
3512         filter_flags = (u32)val;
3513
3514         mutex_lock(&priv->mutex);
3515         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3516                 /* Cancel any currently running scans... */
3517                 if (iwl_scan_cancel_timeout(priv, 100))
3518                         IWL_WARNING("Could not cancel scan.\n");
3519                 else {
3520                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3521                                        "0x%04X\n", filter_flags);
3522                         priv->staging_rxon.filter_flags =
3523                                 cpu_to_le32(filter_flags);
3524                         iwl_commit_rxon(priv);
3525                 }
3526         }
3527         mutex_unlock(&priv->mutex);
3528
3529         return count;
3530 }
3531
3532 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3533                    store_filter_flags);
3534
3535 static ssize_t store_retry_rate(struct device *d,
3536                                 struct device_attribute *attr,
3537                                 const char *buf, size_t count)
3538 {
3539         struct iwl_priv *priv = dev_get_drvdata(d);
3540         long val;
3541         int ret  = strict_strtol(buf, 10, &val);
3542         if (!ret)
3543                 return ret;
3544
3545         priv->retry_rate = (val > 0) ? val : 1;
3546
3547         return count;
3548 }
3549
3550 static ssize_t show_retry_rate(struct device *d,
3551                                struct device_attribute *attr, char *buf)
3552 {
3553         struct iwl_priv *priv = dev_get_drvdata(d);
3554         return sprintf(buf, "%d", priv->retry_rate);
3555 }
3556
3557 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3558                    store_retry_rate);
3559
3560 static ssize_t store_power_level(struct device *d,
3561                                  struct device_attribute *attr,
3562                                  const char *buf, size_t count)
3563 {
3564         struct iwl_priv *priv = dev_get_drvdata(d);
3565         int ret;
3566         unsigned long mode;
3567
3568
3569         mutex_lock(&priv->mutex);
3570
3571         if (!iwl_is_ready(priv)) {
3572                 ret = -EAGAIN;
3573                 goto out;
3574         }
3575
3576         ret = strict_strtoul(buf, 10, &mode);
3577         if (ret)
3578                 goto out;
3579
3580         ret = iwl_power_set_user_mode(priv, mode);
3581         if (ret) {
3582                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3583                 goto out;
3584         }
3585         ret = count;
3586
3587  out:
3588         mutex_unlock(&priv->mutex);
3589         return ret;
3590 }
3591
3592 static ssize_t show_power_level(struct device *d,
3593                                 struct device_attribute *attr, char *buf)
3594 {
3595         struct iwl_priv *priv = dev_get_drvdata(d);
3596         int mode = priv->power_data.user_power_setting;
3597         int system = priv->power_data.system_power_setting;
3598         int level = priv->power_data.power_mode;
3599         char *p = buf;
3600
3601         switch (system) {
3602         case IWL_POWER_SYS_AUTO:
3603                 p += sprintf(p, "SYSTEM:auto");
3604                 break;
3605         case IWL_POWER_SYS_AC:
3606                 p += sprintf(p, "SYSTEM:ac");
3607                 break;
3608         case IWL_POWER_SYS_BATTERY:
3609                 p += sprintf(p, "SYSTEM:battery");
3610                 break;
3611         }
3612
3613         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3614                         "fixed" : "auto");
3615         p += sprintf(p, "\tINDEX:%d", level);
3616         p += sprintf(p, "\n");
3617         return p - buf + 1;
3618 }
3619
3620 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3621                    store_power_level);
3622
3623
3624 static ssize_t show_statistics(struct device *d,
3625                                struct device_attribute *attr, char *buf)
3626 {
3627         struct iwl_priv *priv = dev_get_drvdata(d);
3628         u32 size = sizeof(struct iwl_notif_statistics);
3629         u32 len = 0, ofs = 0;
3630         u8 *data = (u8 *)&priv->statistics;
3631         int rc = 0;
3632
3633         if (!iwl_is_alive(priv))
3634                 return -EAGAIN;
3635
3636         mutex_lock(&priv->mutex);
3637         rc = iwl_send_statistics_request(priv, 0);
3638         mutex_unlock(&priv->mutex);
3639
3640         if (rc) {
3641                 len = sprintf(buf,
3642                               "Error sending statistics request: 0x%08X\n", rc);
3643                 return len;
3644         }
3645
3646         while (size && (PAGE_SIZE - len)) {
3647                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3648                                    PAGE_SIZE - len, 1);
3649                 len = strlen(buf);
3650                 if (PAGE_SIZE - len)
3651                         buf[len++] = '\n';
3652
3653                 ofs += 16;
3654                 size -= min(size, 16U);
3655         }
3656
3657         return len;
3658 }
3659
3660 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3661
3662 static ssize_t show_status(struct device *d,
3663                            struct device_attribute *attr, char *buf)
3664 {
3665         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3666         if (!iwl_is_alive(priv))
3667                 return -EAGAIN;
3668         return sprintf(buf, "0x%08x\n", (int)priv->status);
3669 }
3670
3671 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3672
3673 /*****************************************************************************
3674  *
3675  * driver setup and teardown
3676  *
3677  *****************************************************************************/
3678
3679 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3680 {
3681         priv->workqueue = create_workqueue(DRV_NAME);
3682
3683         init_waitqueue_head(&priv->wait_command_queue);
3684
3685         INIT_WORK(&priv->up, iwl_bg_up);
3686         INIT_WORK(&priv->restart, iwl_bg_restart);
3687         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3688         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3689         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3690         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3691         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3692         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3693
3694         iwl_setup_scan_deferred_work(priv);
3695         iwl_setup_power_deferred_work(priv);
3696
3697         if (priv->cfg->ops->lib->setup_deferred_work)
3698                 priv->cfg->ops->lib->setup_deferred_work(priv);
3699
3700         init_timer(&priv->statistics_periodic);
3701         priv->statistics_periodic.data = (unsigned long)priv;
3702         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3703
3704         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3705                      iwl_irq_tasklet, (unsigned long)priv);
3706 }
3707
3708 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3709 {
3710         if (priv->cfg->ops->lib->cancel_deferred_work)
3711                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3712
3713         cancel_delayed_work_sync(&priv->init_alive_start);
3714         cancel_delayed_work(&priv->scan_check);
3715         cancel_delayed_work_sync(&priv->set_power_save);
3716         cancel_delayed_work(&priv->alive_start);
3717         cancel_work_sync(&priv->beacon_update);
3718         del_timer_sync(&priv->statistics_periodic);
3719 }
3720
3721 static struct attribute *iwl_sysfs_entries[] = {
3722         &dev_attr_flags.attr,
3723         &dev_attr_filter_flags.attr,
3724         &dev_attr_power_level.attr,
3725         &dev_attr_retry_rate.attr,
3726         &dev_attr_statistics.attr,
3727         &dev_attr_status.attr,
3728         &dev_attr_temperature.attr,
3729         &dev_attr_tx_power.attr,
3730 #ifdef CONFIG_IWLWIFI_DEBUG
3731         &dev_attr_debug_level.attr,
3732 #endif
3733         &dev_attr_version.attr,
3734
3735         NULL
3736 };
3737
3738 static struct attribute_group iwl_attribute_group = {
3739         .name = NULL,           /* put in device directory */
3740         .attrs = iwl_sysfs_entries,
3741 };
3742
3743 static struct ieee80211_ops iwl_hw_ops = {
3744         .tx = iwl_mac_tx,
3745         .start = iwl_mac_start,
3746         .stop = iwl_mac_stop,
3747         .add_interface = iwl_mac_add_interface,
3748         .remove_interface = iwl_mac_remove_interface,
3749         .config = iwl_mac_config,
3750         .config_interface = iwl_mac_config_interface,
3751         .configure_filter = iwl_configure_filter,
3752         .set_key = iwl_mac_set_key,
3753         .update_tkip_key = iwl_mac_update_tkip_key,
3754         .get_stats = iwl_mac_get_stats,
3755         .get_tx_stats = iwl_mac_get_tx_stats,
3756         .conf_tx = iwl_mac_conf_tx,
3757         .reset_tsf = iwl_mac_reset_tsf,
3758         .bss_info_changed = iwl_bss_info_changed,
3759         .ampdu_action = iwl_mac_ampdu_action,
3760         .hw_scan = iwl_mac_hw_scan
3761 };
3762
3763 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3764 {
3765         int err = 0;
3766         struct iwl_priv *priv;
3767         struct ieee80211_hw *hw;
3768         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3769         unsigned long flags;
3770
3771         /************************
3772          * 1. Allocating HW data
3773          ************************/
3774
3775         /* Disabling hardware scan means that mac80211 will perform scans
3776          * "the hard way", rather than using device's scan. */
3777         if (cfg->mod_params->disable_hw_scan) {
3778                 if (cfg->mod_params->debug & IWL_DL_INFO)
3779                         dev_printk(KERN_DEBUG, &(pdev->dev),
3780                                    "Disabling hw_scan\n");
3781                 iwl_hw_ops.hw_scan = NULL;
3782         }
3783
3784         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3785         if (!hw) {
3786                 err = -ENOMEM;
3787                 goto out;
3788         }
3789         priv = hw->priv;
3790         /* At this point both hw and priv are allocated. */
3791
3792         SET_IEEE80211_DEV(hw, &pdev->dev);
3793
3794         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3795         priv->cfg = cfg;
3796         priv->pci_dev = pdev;
3797
3798 #ifdef CONFIG_IWLWIFI_DEBUG
3799         priv->debug_level = priv->cfg->mod_params->debug;
3800         atomic_set(&priv->restrict_refcnt, 0);
3801 #endif
3802
3803         /**************************
3804          * 2. Initializing PCI bus
3805          **************************/
3806         if (pci_enable_device(pdev)) {
3807                 err = -ENODEV;
3808                 goto out_ieee80211_free_hw;
3809         }
3810
3811         pci_set_master(pdev);
3812
3813         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3814         if (!err)
3815                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3816         if (err) {
3817                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3818                 if (!err)
3819                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3820                 /* both attempts failed: */
3821                 if (err) {
3822                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3823                                 DRV_NAME);
3824                         goto out_pci_disable_device;
3825                 }
3826         }
3827
3828         err = pci_request_regions(pdev, DRV_NAME);
3829         if (err)
3830                 goto out_pci_disable_device;
3831
3832         pci_set_drvdata(pdev, priv);
3833
3834
3835         /***********************
3836          * 3. Read REV register
3837          ***********************/
3838         priv->hw_base = pci_iomap(pdev, 0, 0);
3839         if (!priv->hw_base) {
3840                 err = -ENODEV;
3841                 goto out_pci_release_regions;
3842         }
3843
3844         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3845                 (unsigned long long) pci_resource_len(pdev, 0));
3846         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3847
3848         iwl_hw_detect(priv);
3849         printk(KERN_INFO DRV_NAME
3850                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3851                 priv->cfg->name, priv->hw_rev);
3852
3853         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3854          * PCI Tx retries from interfering with C3 CPU state */
3855         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3856
3857         /* amp init */
3858         err = priv->cfg->ops->lib->apm_ops.init(priv);
3859         if (err < 0) {
3860                 IWL_DEBUG_INFO("Failed to init APMG\n");
3861                 goto out_iounmap;
3862         }
3863         /*****************
3864          * 4. Read EEPROM
3865          *****************/
3866         /* Read the EEPROM */
3867         err = iwl_eeprom_init(priv);
3868         if (err) {
3869                 IWL_ERROR("Unable to init EEPROM\n");
3870                 goto out_iounmap;
3871         }
3872         err = iwl_eeprom_check_version(priv);
3873         if (err)
3874                 goto out_iounmap;
3875
3876         /* extract MAC Address */
3877         iwl_eeprom_get_mac(priv, priv->mac_addr);
3878         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3879         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3880
3881         /************************
3882          * 5. Setup HW constants
3883          ************************/
3884         if (iwl_set_hw_params(priv)) {
3885                 IWL_ERROR("failed to set hw parameters\n");
3886                 goto out_free_eeprom;
3887         }
3888
3889         /*******************
3890          * 6. Setup priv
3891          *******************/
3892
3893         err = iwl_init_drv(priv);
3894         if (err)
3895                 goto out_free_eeprom;
3896         /* At this point both hw and priv are initialized. */
3897
3898         /**********************************
3899          * 7. Initialize module parameters
3900          **********************************/
3901
3902         /* Disable radio (SW RF KILL) via parameter when loading driver */
3903         if (priv->cfg->mod_params->disable) {
3904                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3905                 IWL_DEBUG_INFO("Radio disabled.\n");
3906         }
3907
3908         /********************
3909          * 8. Setup services
3910          ********************/
3911         spin_lock_irqsave(&priv->lock, flags);
3912         iwl_disable_interrupts(priv);
3913         spin_unlock_irqrestore(&priv->lock, flags);
3914
3915         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3916         if (err) {
3917                 IWL_ERROR("failed to create sysfs device attributes\n");
3918                 goto out_uninit_drv;
3919         }
3920
3921
3922         iwl_setup_deferred_work(priv);
3923         iwl_setup_rx_handlers(priv);
3924
3925         /********************
3926          * 9. Conclude
3927          ********************/
3928         pci_save_state(pdev);
3929         pci_disable_device(pdev);
3930
3931         /**********************************
3932          * 10. Setup and register mac80211
3933          **********************************/
3934
3935         err = iwl_setup_mac(priv);
3936         if (err)
3937                 goto out_remove_sysfs;
3938
3939         err = iwl_dbgfs_register(priv, DRV_NAME);
3940         if (err)
3941                 IWL_ERROR("failed to create debugfs files\n");
3942
3943         err = iwl_rfkill_init(priv);
3944         if (err)
3945                 IWL_ERROR("Unable to initialize RFKILL system. "
3946                                   "Ignoring error: %d\n", err);
3947         iwl_power_initialize(priv);
3948         return 0;
3949
3950  out_remove_sysfs:
3951         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3952  out_uninit_drv:
3953         iwl_uninit_drv(priv);
3954  out_free_eeprom:
3955         iwl_eeprom_free(priv);
3956  out_iounmap:
3957         pci_iounmap(pdev, priv->hw_base);
3958  out_pci_release_regions:
3959         pci_release_regions(pdev);
3960         pci_set_drvdata(pdev, NULL);
3961  out_pci_disable_device:
3962         pci_disable_device(pdev);
3963  out_ieee80211_free_hw:
3964         ieee80211_free_hw(priv->hw);
3965  out:
3966         return err;
3967 }
3968
3969 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3970 {
3971         struct iwl_priv *priv = pci_get_drvdata(pdev);
3972         unsigned long flags;
3973
3974         if (!priv)
3975                 return;
3976
3977         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3978
3979         iwl_dbgfs_unregister(priv);
3980         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3981
3982         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3983          * to be called and iwl_down since we are removing the device
3984          * we need to set STATUS_EXIT_PENDING bit.
3985          */
3986         set_bit(STATUS_EXIT_PENDING, &priv->status);
3987         if (priv->mac80211_registered) {
3988                 ieee80211_unregister_hw(priv->hw);
3989                 priv->mac80211_registered = 0;
3990         } else {
3991                 iwl_down(priv);
3992         }
3993
3994         /* make sure we flush any pending irq or
3995          * tasklet for the driver
3996          */
3997         spin_lock_irqsave(&priv->lock, flags);
3998         iwl_disable_interrupts(priv);
3999         spin_unlock_irqrestore(&priv->lock, flags);
4000
4001         iwl_synchronize_irq(priv);
4002
4003         iwl_rfkill_unregister(priv);
4004         iwl_dealloc_ucode_pci(priv);
4005
4006         if (priv->rxq.bd)
4007                 iwl_rx_queue_free(priv, &priv->rxq);
4008         iwl_hw_txq_ctx_free(priv);
4009
4010         iwl_clear_stations_table(priv);
4011         iwl_eeprom_free(priv);
4012
4013
4014         /*netif_stop_queue(dev); */
4015         flush_workqueue(priv->workqueue);
4016
4017         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4018          * priv->workqueue... so we can't take down the workqueue
4019          * until now... */
4020         destroy_workqueue(priv->workqueue);
4021         priv->workqueue = NULL;
4022
4023         pci_iounmap(pdev, priv->hw_base);
4024         pci_release_regions(pdev);
4025         pci_disable_device(pdev);
4026         pci_set_drvdata(pdev, NULL);
4027
4028         iwl_uninit_drv(priv);
4029
4030         if (priv->ibss_beacon)
4031                 dev_kfree_skb(priv->ibss_beacon);
4032
4033         ieee80211_free_hw(priv->hw);
4034 }
4035
4036 #ifdef CONFIG_PM
4037
4038 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4039 {
4040         struct iwl_priv *priv = pci_get_drvdata(pdev);
4041
4042         if (priv->is_open) {
4043                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4044                 iwl_mac_stop(priv->hw);
4045                 priv->is_open = 1;
4046         }
4047
4048         pci_set_power_state(pdev, PCI_D3hot);
4049
4050         return 0;
4051 }
4052
4053 static int iwl_pci_resume(struct pci_dev *pdev)
4054 {
4055         struct iwl_priv *priv = pci_get_drvdata(pdev);
4056
4057         pci_set_power_state(pdev, PCI_D0);
4058
4059         if (priv->is_open)
4060                 iwl_mac_start(priv->hw);
4061
4062         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4063         return 0;
4064 }
4065
4066 #endif /* CONFIG_PM */
4067
4068 /*****************************************************************************
4069  *
4070  * driver and module entry point
4071  *
4072  *****************************************************************************/
4073
4074 /* Hardware specific file defines the PCI IDs table for that hardware module */
4075 static struct pci_device_id iwl_hw_card_ids[] = {
4076 #ifdef CONFIG_IWL4965
4077         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4078         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4079 #endif /* CONFIG_IWL4965 */
4080 #ifdef CONFIG_IWL5000
4081         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4082         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4083         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4084         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4085         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4086         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4087         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4088         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4089         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4090         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4091 /* 5350 WiFi/WiMax */
4092         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4093         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4094         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4095 /* 5150 Wifi/WiMax */
4096         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4097         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4098 #endif /* CONFIG_IWL5000 */
4099
4100         {0}
4101 };
4102 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4103
4104 static struct pci_driver iwl_driver = {
4105         .name = DRV_NAME,
4106         .id_table = iwl_hw_card_ids,
4107         .probe = iwl_pci_probe,
4108         .remove = __devexit_p(iwl_pci_remove),
4109 #ifdef CONFIG_PM
4110         .suspend = iwl_pci_suspend,
4111         .resume = iwl_pci_resume,
4112 #endif
4113 };
4114
4115 static int __init iwl_init(void)
4116 {
4117
4118         int ret;
4119         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4120         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4121
4122         ret = iwlagn_rate_control_register();
4123         if (ret) {
4124                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4125                 return ret;
4126         }
4127
4128         ret = pci_register_driver(&iwl_driver);
4129         if (ret) {
4130                 IWL_ERROR("Unable to initialize PCI module\n");
4131                 goto error_register;
4132         }
4133
4134         return ret;
4135
4136 error_register:
4137         iwlagn_rate_control_unregister();
4138         return ret;
4139 }
4140
4141 static void __exit iwl_exit(void)
4142 {
4143         pci_unregister_driver(&iwl_driver);
4144         iwlagn_rate_control_unregister();
4145 }
4146
4147 module_exit(iwl_exit);
4148 module_init(iwl_init);