drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 112  * @priv: staging_rxon is compared to active_rxon
 113  *
 114  * If the RXON structure is changing enough to require a new tune,
 115  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 116  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 117  */
 118 static int iwl_full_rxon_required(struct iwl_priv *priv)
 119 {
 120
 121         /* These items are only settable from the full RXON command */
 122         if (!(iwl_is_associated(priv)) ||
 123             compare_ether_addr(priv->staging_rxon.bssid_addr,
 124                                priv->active_rxon.bssid_addr) ||
 125             compare_ether_addr(priv->staging_rxon.node_addr,
 126                                priv->active_rxon.node_addr) ||
 127             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 128                                priv->active_rxon.wlap_bssid_addr) ||
 129             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 130             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 131             (priv->staging_rxon.air_propagation !=
 132              priv->active_rxon.air_propagation) ||
 133             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 134              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 135             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 136              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 137             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 138                 return 1;
 139
 140         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 141          * be updated with the RXON_ASSOC command -- however only some
 142          * flag transitions are allowed using RXON_ASSOC */
 143
 144         /* Check if we are not switching bands */
 145         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 146             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 147                 return 1;
 148
 149         /* Check if we are switching association toggle */
 150         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 151                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 152                 return 1;
 153
 154         return 0;
 155 }
 156
 157 /**
 158  * iwl_commit_rxon - commit staging_rxon to hardware
 159  *
 160  * The RXON command in staging_rxon is committed to the hardware and
 161  * the active_rxon structure is updated with the new data.  This
 162  * function correctly transitions out of the RXON_ASSOC_MSK state if
 163  * a HW tune is required based on the RXON structure changes.
 164  */
 165 static int iwl_commit_rxon(struct iwl_priv *priv)
 166 {
 167         /* cast away the const for active_rxon in this function */
 168         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 169         int ret;
 170         bool new_assoc =
 171                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 172
 173         if (!iwl_is_alive(priv))
 174                 return -EBUSY;
 175
 176         /* always get timestamp with Rx frame */
 177         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 178         /* allow CTS-to-self if possible. this is relevant only for
 179          * 5000, but will not damage 4965 */
 180         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 181
 182         ret = iwl_agn_check_rxon_cmd(&priv->staging_rxon);
 183         if (ret) {
 184                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 185                 return -EINVAL;
 186         }
 187
 188         /* If we don't need to send a full RXON, we can use
 189          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 190          * and other flags for the current radio configuration. */
 191         if (!iwl_full_rxon_required(priv)) {
 192                 ret = iwl_send_rxon_assoc(priv);
 193                 if (ret) {
 194                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 195                         return ret;
 196                 }
 197
 198                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 199                 return 0;
 200         }
 201
 202         /* station table will be cleared */
 203         priv->assoc_station_added = 0;
 204
 205         /* If we are currently associated and the new config requires
 206          * an RXON_ASSOC and the new config wants the associated mask enabled,
 207          * we must clear the associated from the active configuration
 208          * before we apply the new config */
 209         if (iwl_is_associated(priv) && new_assoc) {
 210                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 211                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 212
 213                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 214                                       sizeof(struct iwl_rxon_cmd),
 215                                       &priv->active_rxon);
 216
 217                 /* If the mask clearing failed then we set
 218                  * active_rxon back to what it was previously */
 219                 if (ret) {
 220                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 221                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 222                         return ret;
 223                 }
 224         }
 225
 226         IWL_DEBUG_INFO("Sending RXON\n"
 227                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 228                        "* channel = %d\n"
 229                        "* bssid = %pM\n",
 230                        (new_assoc ? "" : "out"),
 231                        le16_to_cpu(priv->staging_rxon.channel),
 232                        priv->staging_rxon.bssid_addr);
 233
 234         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 235
 236         /* Apply the new configuration
 237          * RXON unassoc clears the station table in uCode, send it before
 238          * we add the bcast station. If assoc bit is set, we will send RXON
 239          * after having added the bcast and bssid station.
 240          */
 241         if (!new_assoc) {
 242                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 243                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 244                 if (ret) {
 245                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 246                         return ret;
 247                 }
 248                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 249         }
 250
 251         iwl_clear_stations_table(priv);
 252
 253         if (!priv->error_recovering)
 254                 priv->start_calib = 0;
 255
 256         /* Add the broadcast address so we can send broadcast frames */
 257         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 258                                                 IWL_INVALID_STATION) {
 259                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 260                 return -EIO;
 261         }
 262
 263         /* If we have set the ASSOC_MSK and we are in BSS mode then
 264          * add the IWL_AP_ID to the station rate table */
 265         if (new_assoc) {
 266                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 267                         ret = iwl_rxon_add_station(priv,
 268                                            priv->active_rxon.bssid_addr, 1);
 269                         if (ret == IWL_INVALID_STATION) {
 270                                 IWL_ERROR("Error adding AP address for TX.\n");
 271                                 return -EIO;
 272                         }
 273                         priv->assoc_station_added = 1;
 274                         if (priv->default_wep_key &&
 275                             iwl_send_static_wepkey_cmd(priv, 0))
 276                                 IWL_ERROR("Could not send WEP static key.\n");
 277                 }
 278
 279                 /* Apply the new configuration
 280                  * RXON assoc doesn't clear the station table in uCode,
 281                  */
 282                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 283                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 284                 if (ret) {
 285                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 286                         return ret;
 287                 }
 288                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 289         }
 290
 291         iwl_init_sensitivity(priv);
 292
 293         /* If we issue a new RXON command which required a tune then we must
 294          * send a new TXPOWER command or we won't be able to Tx any frames */
 295         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 296         if (ret) {
 297                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 298                 return ret;
 299         }
 300
 301         return 0;
 302 }
 303
 304 void iwl_update_chain_flags(struct iwl_priv *priv)
 305 {
 306
 307         iwl_set_rxon_chain(priv);
 308         iwl_commit_rxon(priv);
 309 }
 310
 311 static int iwl_send_bt_config(struct iwl_priv *priv)
 312 {
 313         struct iwl4965_bt_cmd bt_cmd = {
 314                 .flags = 3,
 315                 .lead_time = 0xAA,
 316                 .max_kill = 1,
 317                 .kill_ack_mask = 0,
 318                 .kill_cts_mask = 0,
 319         };
 320
 321         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 322                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 323 }
 324
 325 static void iwl_clear_free_frames(struct iwl_priv *priv)
 326 {
 327         struct list_head *element;
 328
 329         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 330                        priv->frames_count);
 331
 332         while (!list_empty(&priv->free_frames)) {
 333                 element = priv->free_frames.next;
 334                 list_del(element);
 335                 kfree(list_entry(element, struct iwl_frame, list));
 336                 priv->frames_count--;
 337         }
 338
 339         if (priv->frames_count) {
 340                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 341                             priv->frames_count);
 342                 priv->frames_count = 0;
 343         }
 344 }
 345
 346 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 347 {
 348         struct iwl_frame *frame;
 349         struct list_head *element;
 350         if (list_empty(&priv->free_frames)) {
 351                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 352                 if (!frame) {
 353                         IWL_ERROR("Could not allocate frame!\n");
 354                         return NULL;
 355                 }
 356
 357                 priv->frames_count++;
 358                 return frame;
 359         }
 360
 361         element = priv->free_frames.next;
 362         list_del(element);
 363         return list_entry(element, struct iwl_frame, list);
 364 }
 365
 366 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 367 {
 368         memset(frame, 0, sizeof(*frame));
 369         list_add(&frame->list, &priv->free_frames);
 370 }
 371
 372 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 373                                           struct ieee80211_hdr *hdr,
 374                                           const u8 *dest, int left)
 375 {
 376         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 377             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 378              (priv->iw_mode != NL80211_IFTYPE_AP)))
 379                 return 0;
 380
 381         if (priv->ibss_beacon->len > left)
 382                 return 0;
 383
 384         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 385
 386         return priv->ibss_beacon->len;
 387 }
 388
 389 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 390 {
 391         int i;
 392         int rate_mask;
 393
 394         /* Set rate mask*/
 395         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 396                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 397         else
 398                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 399
 400         /* Find lowest valid rate */
 401         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 402                                         i = iwl_rates[i].next_ieee) {
 403                 if (rate_mask & (1 << i))
 404                         return iwl_rates[i].plcp;
 405         }
 406
 407         /* No valid rate was found. Assign the lowest one */
 408         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 409                 return IWL_RATE_1M_PLCP;
 410         else
 411                 return IWL_RATE_6M_PLCP;
 412 }
 413
 414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 415                                        struct iwl_frame *frame, u8 rate)
 416 {
 417         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 418         unsigned int frame_size;
 419
 420         tx_beacon_cmd = &frame->u.beacon;
 421         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 422
 423         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 424         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 425
 426         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 427                                 iwl_bcast_addr,
 428                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 429
 430         BUG_ON(frame_size > MAX_MPDU_SIZE);
 431         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 432
 433         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 434                 tx_beacon_cmd->tx.rate_n_flags =
 435                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 436         else
 437                 tx_beacon_cmd->tx.rate_n_flags =
 438                         iwl_hw_set_rate_n_flags(rate, 0);
 439
 440         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 441                                      TX_CMD_FLG_TSF_MSK |
 442                                      TX_CMD_FLG_STA_RATE_MSK;
 443
 444         return sizeof(*tx_beacon_cmd) + frame_size;
 445 }
 446 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 447 {
 448         struct iwl_frame *frame;
 449         unsigned int frame_size;
 450         int rc;
 451         u8 rate;
 452
 453         frame = iwl_get_free_frame(priv);
 454
 455         if (!frame) {
 456                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 457                           "command.\n");
 458                 return -ENOMEM;
 459         }
 460
 461         rate = iwl_rate_get_lowest_plcp(priv);
 462
 463         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 464
 465         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 466                               &frame->u.cmd[0]);
 467
 468         iwl_free_frame(priv, frame);
 469
 470         return rc;
 471 }
 472
 473 /******************************************************************************
 474  *
 475  * Misc. internal state and helper functions
 476  *
 477  ******************************************************************************/
 478
 479 static void iwl_ht_conf(struct iwl_priv *priv,
 480                             struct ieee80211_bss_conf *bss_conf)
 481 {
 482         struct ieee80211_sta_ht_cap *ht_conf;
 483         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 484         struct ieee80211_sta *sta;
 485
 486         IWL_DEBUG_MAC80211("enter: \n");
 487
 488         if (!iwl_conf->is_ht)
 489                 return;
 490
 491
 492         /*
 493          * It is totally wrong to base global information on something
 494          * that is valid only when associated, alas, this driver works
 495          * that way and I don't know how to fix it.
 496          */
 497
 498         rcu_read_lock();
 499         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 500         if (!sta) {
 501                 rcu_read_unlock();
 502                 return;
 503         }
 504         ht_conf = &sta->ht_cap;
 505
 506         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 507                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 508         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 509                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 510
 511         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 512         iwl_conf->max_amsdu_size =
 513                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 514
 515         iwl_conf->supported_chan_width =
 516                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 517
 518         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
 519         /* If no above or below channel supplied disable FAT channel */
 520         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 521             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 522                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 523                 iwl_conf->supported_chan_width = 0;
 524         }
 525
 526         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 527
 528         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 529
 530         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
 531         iwl_conf->ht_protection =
 532                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 533         iwl_conf->non_GF_STA_present =
 534                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 535
 536         rcu_read_unlock();
 537
 538         IWL_DEBUG_MAC80211("leave\n");
 539 }
 540
 541 /*
 542  * QoS  support
 543 */
 544 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 545 {
 546         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 547                 return;
 548
 549         if (!priv->qos_data.qos_enable)
 550                 return;
 551
 552         priv->qos_data.def_qos_parm.qos_flags = 0;
 553
 554         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 555             !priv->qos_data.qos_cap.q_AP.txop_request)
 556                 priv->qos_data.def_qos_parm.qos_flags |=
 557                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 558         if (priv->qos_data.qos_active)
 559                 priv->qos_data.def_qos_parm.qos_flags |=
 560                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 561
 562         if (priv->current_ht_config.is_ht)
 563                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 564
 565         if (force || iwl_is_associated(priv)) {
 566                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 567                                 priv->qos_data.qos_active,
 568                                 priv->qos_data.def_qos_parm.qos_flags);
 569
 570                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 571                                        sizeof(struct iwl_qosparam_cmd),
 572                                        &priv->qos_data.def_qos_parm, NULL);
 573         }
 574 }
 575
 576 #define MAX_UCODE_BEACON_INTERVAL       4096
 577
 578 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 579 {
 580         u16 new_val = 0;
 581         u16 beacon_factor = 0;
 582
 583         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 584                                         / MAX_UCODE_BEACON_INTERVAL;
 585         new_val = beacon_val / beacon_factor;
 586
 587         return new_val;
 588 }
 589
 590 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 591 {
 592         u64 tsf;
 593         s32 interval_tm, rem;
 594         unsigned long flags;
 595         struct ieee80211_conf *conf = NULL;
 596         u16 beacon_int = 0;
 597
 598         conf = ieee80211_get_hw_conf(priv->hw);
 599
 600         spin_lock_irqsave(&priv->lock, flags);
 601         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 602         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 603
 604         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 605                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 606                 priv->rxon_timing.atim_window = 0;
 607         } else {
 608                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 609
 610                 /* TODO: we need to get atim_window from upper stack
 611                  * for now we set to 0 */
 612                 priv->rxon_timing.atim_window = 0;
 613         }
 614
 615         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 616
 617         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 618         interval_tm = beacon_int * 1024;
 619         rem = do_div(tsf, interval_tm);
 620         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 621
 622         spin_unlock_irqrestore(&priv->lock, flags);
 623         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 624                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 625                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 626                         le16_to_cpu(priv->rxon_timing.atim_window));
 627 }
 628
 629 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 630                                    enum ieee80211_band band)
 631 {
 632         if (band == IEEE80211_BAND_5GHZ) {
 633                 priv->staging_rxon.flags &=
 634                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 635                       | RXON_FLG_CCK_MSK);
 636                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 637         } else {
 638                 /* Copied from iwl_post_associate() */
 639                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 640                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 641                 else
 642                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 643
 644                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 645                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 646
 647                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 648                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 649                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 650         }
 651 }
 652
 653 /*
 654  * initialize rxon structure with default values from eeprom
 655  */
 656 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 657 {
 658         const struct iwl_channel_info *ch_info;
 659
 660         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 661
 662         switch (mode) {
 663         case NL80211_IFTYPE_AP:
 664                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 665                 break;
 666
 667         case NL80211_IFTYPE_STATION:
 668                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 669                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 670                 break;
 671
 672         case NL80211_IFTYPE_ADHOC:
 673                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 674                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 675                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 676                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 677                 break;
 678
 679         case NL80211_IFTYPE_MONITOR:
 680                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 681                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 682                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 683                 break;
 684         default:
 685                 IWL_ERROR("Unsupported interface type %d\n", mode);
 686                 break;
 687         }
 688
 689 #if 0
 690         /* TODO:  Figure out when short_preamble would be set and cache from
 691          * that */
 692         if (!hw_to_local(priv->hw)->short_preamble)
 693                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 694         else
 695                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 696 #endif
 697
 698         ch_info = iwl_get_channel_info(priv, priv->band,
 699                                        le16_to_cpu(priv->active_rxon.channel));
 700
 701         if (!ch_info)
 702                 ch_info = &priv->channel_info[0];
 703
 704         /*
 705          * in some case A channels are all non IBSS
 706          * in this case force B/G channel
 707          */
 708         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 709             !(is_channel_ibss(ch_info)))
 710                 ch_info = &priv->channel_info[0];
 711
 712         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 713         priv->band = ch_info->band;
 714
 715         iwl_set_flags_for_band(priv, priv->band);
 716
 717         priv->staging_rxon.ofdm_basic_rates =
 718             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 719         priv->staging_rxon.cck_basic_rates =
 720             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 721
 722         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 723                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 724         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 725         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 726         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 727         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 728         iwl_set_rxon_chain(priv);
 729 }
 730
 731 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 732 {
 733         iwl_connection_init_rx_config(priv, mode);
 734         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 735
 736         iwl_clear_stations_table(priv);
 737
 738         /* dont commit rxon if rf-kill is on*/
 739         if (!iwl_is_ready_rf(priv))
 740                 return -EAGAIN;
 741
 742         cancel_delayed_work(&priv->scan_check);
 743         if (iwl_scan_cancel_timeout(priv, 100)) {
 744                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 745                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 746                 return -EAGAIN;
 747         }
 748
 749         iwl_commit_rxon(priv);
 750
 751         return 0;
 752 }
 753
 754 static void iwl_set_rate(struct iwl_priv *priv)
 755 {
 756         const struct ieee80211_supported_band *hw = NULL;
 757         struct ieee80211_rate *rate;
 758         int i;
 759
 760         hw = iwl_get_hw_mode(priv, priv->band);
 761         if (!hw) {
 762                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 763                 return;
 764         }
 765
 766         priv->active_rate = 0;
 767         priv->active_rate_basic = 0;
 768
 769         for (i = 0; i < hw->n_bitrates; i++) {
 770                 rate = &(hw->bitrates[i]);
 771                 if (rate->hw_value < IWL_RATE_COUNT)
 772                         priv->active_rate |= (1 << rate->hw_value);
 773         }
 774
 775         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 776                        priv->active_rate, priv->active_rate_basic);
 777
 778         /*
 779          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 780          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 781          * OFDM
 782          */
 783         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 784                 priv->staging_rxon.cck_basic_rates =
 785                     ((priv->active_rate_basic &
 786                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 787         else
 788                 priv->staging_rxon.cck_basic_rates =
 789                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 790
 791         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 792                 priv->staging_rxon.ofdm_basic_rates =
 793                     ((priv->active_rate_basic &
 794                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 795                       IWL_FIRST_OFDM_RATE) & 0xFF;
 796         else
 797                 priv->staging_rxon.ofdm_basic_rates =
 798                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 799 }
 800
 801
 802 /******************************************************************************
 803  *
 804  * Generic RX handler implementations
 805  *
 806  ******************************************************************************/
 807 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 808                                 struct iwl_rx_mem_buffer *rxb)
 809 {
 810         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 811         struct iwl_alive_resp *palive;
 812         struct delayed_work *pwork;
 813
 814         palive = &pkt->u.alive_frame;
 815
 816         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 817                        "0x%01X 0x%01X\n",
 818                        palive->is_valid, palive->ver_type,
 819                        palive->ver_subtype);
 820
 821         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 822                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 823                 memcpy(&priv->card_alive_init,
 824                        &pkt->u.alive_frame,
 825                        sizeof(struct iwl_init_alive_resp));
 826                 pwork = &priv->init_alive_start;
 827         } else {
 828                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 829                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 830                        sizeof(struct iwl_alive_resp));
 831                 pwork = &priv->alive_start;
 832         }
 833
 834         /* We delay the ALIVE response by 5ms to
 835          * give the HW RF Kill time to activate... */
 836         if (palive->is_valid == UCODE_VALID_OK)
 837                 queue_delayed_work(priv->workqueue, pwork,
 838                                    msecs_to_jiffies(5));
 839         else
 840                 IWL_WARNING("uCode did not respond OK.\n");
 841 }
 842
 843 static void iwl_rx_reply_error(struct iwl_priv *priv,
 844                                    struct iwl_rx_mem_buffer *rxb)
 845 {
 846         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 847
 848         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 849                 "seq 0x%04X ser 0x%08X\n",
 850                 le32_to_cpu(pkt->u.err_resp.error_type),
 851                 get_cmd_string(pkt->u.err_resp.cmd_id),
 852                 pkt->u.err_resp.cmd_id,
 853                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 854                 le32_to_cpu(pkt->u.err_resp.error_info));
 855 }
 856
 857 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 858
 859 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 860 {
 861         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 862         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 863         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
 864         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 865                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 866         rxon->channel = csa->channel;
 867         priv->staging_rxon.channel = csa->channel;
 868 }
 869
 870 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 871                                       struct iwl_rx_mem_buffer *rxb)
 872 {
 873 #ifdef CONFIG_IWLWIFI_DEBUG
 874         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 875         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
 876         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 877                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 878 #endif
 879 }
 880
 881 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 882                                              struct iwl_rx_mem_buffer *rxb)
 883 {
 884         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 885         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 886                         "notification for %s:\n",
 887                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 888         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 889 }
 890
 891 static void iwl_bg_beacon_update(struct work_struct *work)
 892 {
 893         struct iwl_priv *priv =
 894                 container_of(work, struct iwl_priv, beacon_update);
 895         struct sk_buff *beacon;
 896
 897         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 898         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 899
 900         if (!beacon) {
 901                 IWL_ERROR("update beacon failed\n");
 902                 return;
 903         }
 904
 905         mutex_lock(&priv->mutex);
 906         /* new beacon skb is allocated every time; dispose previous.*/
 907         if (priv->ibss_beacon)
 908                 dev_kfree_skb(priv->ibss_beacon);
 909
 910         priv->ibss_beacon = beacon;
 911         mutex_unlock(&priv->mutex);
 912
 913         iwl_send_beacon_cmd(priv);
 914 }
 915
 916 /**
 917  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 918  *
 919  * This callback is provided in order to send a statistics request.
 920  *
 921  * This timer function is continually reset to execute within
 922  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 923  * was received.  We need to ensure we receive the statistics in order
 924  * to update the temperature used for calibrating the TXPOWER.
 925  */
 926 static void iwl_bg_statistics_periodic(unsigned long data)
 927 {
 928         struct iwl_priv *priv = (struct iwl_priv *)data;
 929
 930         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 931                 return;
 932
 933         /* dont send host command if rf-kill is on */
 934         if (!iwl_is_ready_rf(priv))
 935                 return;
 936
 937         iwl_send_statistics_request(priv, CMD_ASYNC);
 938 }
 939
 940 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 941                                 struct iwl_rx_mem_buffer *rxb)
 942 {
 943 #ifdef CONFIG_IWLWIFI_DEBUG
 944         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 945         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
 946         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 947
 948         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 949                 "tsf %d %d rate %d\n",
 950                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 951                 beacon->beacon_notify_hdr.failure_frame,
 952                 le32_to_cpu(beacon->ibss_mgr_status),
 953                 le32_to_cpu(beacon->high_tsf),
 954                 le32_to_cpu(beacon->low_tsf), rate);
 955 #endif
 956
 957         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 958             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 959                 queue_work(priv->workqueue, &priv->beacon_update);
 960 }
 961
 962 /* Handle notification from uCode that card's power state is changing
 963  * due to software, hardware, or critical temperature RFKILL */
 964 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 965                                     struct iwl_rx_mem_buffer *rxb)
 966 {
 967         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 968         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 969         unsigned long status = priv->status;
 970
 971         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 972                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 973                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 974
 975         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 976                      RF_CARD_DISABLED)) {
 977
 978                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 979                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 980
 981                 if (!iwl_grab_nic_access(priv)) {
 982                         iwl_write_direct32(
 983                                 priv, HBUS_TARG_MBX_C,
 984                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 985
 986                         iwl_release_nic_access(priv);
 987                 }
 988
 989                 if (!(flags & RXON_CARD_DISABLED)) {
 990                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 991                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 992                         if (!iwl_grab_nic_access(priv)) {
 993                                 iwl_write_direct32(
 994                                         priv, HBUS_TARG_MBX_C,
 995                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 996
 997                                 iwl_release_nic_access(priv);
 998                         }
 999                 }
1000
1001                 if (flags & RF_CARD_DISABLED) {
1002                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1003                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1004                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1005                         if (!iwl_grab_nic_access(priv))
1006                                 iwl_release_nic_access(priv);
1007                 }
1008         }
1009
1010         if (flags & HW_CARD_DISABLED)
1011                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1012         else
1013                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1014
1015
1016         if (flags & SW_CARD_DISABLED)
1017                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1018         else
1019                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1020
1021         if (!(flags & RXON_CARD_DISABLED))
1022                 iwl_scan_cancel(priv);
1023
1024         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1025              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1026             (test_bit(STATUS_RF_KILL_SW, &status) !=
1027              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1028                 queue_work(priv->workqueue, &priv->rf_kill);
1029         else
1030                 wake_up_interruptible(&priv->wait_command_queue);
1031 }
1032
1033 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1034 {
1035         int ret;
1036         unsigned long flags;
1037
1038         spin_lock_irqsave(&priv->lock, flags);
1039         ret = iwl_grab_nic_access(priv);
1040         if (ret)
1041                 goto err;
1042
1043         if (src == IWL_PWR_SRC_VAUX) {
1044                 u32 val;
1045                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1046                                             &val);
1047
1048                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1049                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1050                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1051                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1052         } else {
1053                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1054                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1055                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1056         }
1057
1058         iwl_release_nic_access(priv);
1059 err:
1060         spin_unlock_irqrestore(&priv->lock, flags);
1061         return ret;
1062 }
1063
1064 /**
1065  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1066  *
1067  * Setup the RX handlers for each of the reply types sent from the uCode
1068  * to the host.
1069  *
1070  * This function chains into the hardware specific files for them to setup
1071  * any hardware specific handlers as well.
1072  */
1073 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1074 {
1075         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1076         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1077         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1078         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1079         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1080             iwl_rx_pm_debug_statistics_notif;
1081         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1082
1083         /*
1084          * The same handler is used for both the REPLY to a discrete
1085          * statistics request from the host as well as for the periodic
1086          * statistics notifications (after received beacons) from the uCode.
1087          */
1088         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1089         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1090
1091         iwl_setup_spectrum_handlers(priv);
1092         iwl_setup_rx_scan_handlers(priv);
1093
1094         /* status change handler */
1095         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1096
1097         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1098             iwl_rx_missed_beacon_notif;
1099         /* Rx handlers */
1100         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1101         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1102         /* block ack */
1103         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1104         /* Set up hardware specific Rx handlers */
1105         priv->cfg->ops->lib->rx_handler_setup(priv);
1106 }
1107
1108 /*
1109  * this should be called while priv->lock is locked
1110 */
1111 static void __iwl_rx_replenish(struct iwl_priv *priv)
1112 {
1113         iwl_rx_allocate(priv);
1114         iwl_rx_queue_restock(priv);
1115 }
1116
1117
1118 /**
1119  * iwl_rx_handle - Main entry function for receiving responses from uCode
1120  *
1121  * Uses the priv->rx_handlers callback function array to invoke
1122  * the appropriate handlers, including command responses,
1123  * frame-received notifications, and other notifications.
1124  */
1125 void iwl_rx_handle(struct iwl_priv *priv)
1126 {
1127         struct iwl_rx_mem_buffer *rxb;
1128         struct iwl_rx_packet *pkt;
1129         struct iwl_rx_queue *rxq = &priv->rxq;
1130         u32 r, i;
1131         int reclaim;
1132         unsigned long flags;
1133         u8 fill_rx = 0;
1134         u32 count = 8;
1135
1136         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1137          * buffer that the driver may process (last buffer filled by ucode). */
1138         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1139         i = rxq->read;
1140
1141         /* Rx interrupt, but nothing sent from uCode */
1142         if (i == r)
1143                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1144
1145         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1146                 fill_rx = 1;
1147
1148         while (i != r) {
1149                 rxb = rxq->queue[i];
1150
1151                 /* If an RXB doesn't have a Rx queue slot associated with it,
1152                  * then a bug has been introduced in the queue refilling
1153                  * routines -- catch it here */
1154                 BUG_ON(rxb == NULL);
1155
1156                 rxq->queue[i] = NULL;
1157
1158                 dma_sync_single_range_for_cpu(
1159                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1160                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1161                                 priv->hw_params.rx_buf_size,
1162                                 PCI_DMA_FROMDEVICE);
1163                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1164
1165                 /* Reclaim a command buffer only if this packet is a response
1166                  *   to a (driver-originated) command.
1167                  * If the packet (e.g. Rx frame) originated from uCode,
1168                  *   there is no command buffer to reclaim.
1169                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1170                  *   but apparently a few don't get set; catch them here. */
1171                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1172                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1173                         (pkt->hdr.cmd != REPLY_RX) &&
1174                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1175                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1176                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1177                         (pkt->hdr.cmd != REPLY_TX);
1178
1179                 /* Based on type of command response or notification,
1180                  *   handle those that need handling via function in
1181                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1182                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1183                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1184                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1185                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1186                 } else {
1187                         /* No handling needed */
1188                         IWL_DEBUG(IWL_DL_RX,
1189                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1190                                 r, i, get_cmd_string(pkt->hdr.cmd),
1191                                 pkt->hdr.cmd);
1192                 }
1193
1194                 if (reclaim) {
1195                         /* Invoke any callbacks, transfer the skb to caller, and
1196                          * fire off the (possibly) blocking iwl_send_cmd()
1197                          * as we reclaim the driver command queue */
1198                         if (rxb && rxb->skb)
1199                                 iwl_tx_cmd_complete(priv, rxb);
1200                         else
1201                                 IWL_WARNING("Claim null rxb?\n");
1202                 }
1203
1204                 /* For now we just don't re-use anything.  We can tweak this
1205                  * later to try and re-use notification packets and SKBs that
1206                  * fail to Rx correctly */
1207                 if (rxb->skb != NULL) {
1208                         priv->alloc_rxb_skb--;
1209                         dev_kfree_skb_any(rxb->skb);
1210                         rxb->skb = NULL;
1211                 }
1212
1213                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1214                                  priv->hw_params.rx_buf_size + 256,
1215                                  PCI_DMA_FROMDEVICE);
1216                 spin_lock_irqsave(&rxq->lock, flags);
1217                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1218                 spin_unlock_irqrestore(&rxq->lock, flags);
1219                 i = (i + 1) & RX_QUEUE_MASK;
1220                 /* If there are a lot of unused frames,
1221                  * restock the Rx queue so ucode wont assert. */
1222                 if (fill_rx) {
1223                         count++;
1224                         if (count >= 8) {
1225                                 priv->rxq.read = i;
1226                                 __iwl_rx_replenish(priv);
1227                                 count = 0;
1228                         }
1229                 }
1230         }
1231
1232         /* Backtrack one entry */
1233         priv->rxq.read = i;
1234         iwl_rx_queue_restock(priv);
1235 }
1236
1237 #ifdef CONFIG_IWLWIFI_DEBUG
1238 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1239 {
1240         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1241
1242         IWL_DEBUG_RADIO("RX CONFIG:\n");
1243         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1244         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1245         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1246         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1247                         le32_to_cpu(rxon->filter_flags));
1248         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1249         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1250                         rxon->ofdm_basic_rates);
1251         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1252         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1253         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1254         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1255 }
1256 #endif
1257
1258 static void iwl_enable_interrupts(struct iwl_priv *priv)
1259 {
1260         IWL_DEBUG_ISR("Enabling interrupts\n");
1261         set_bit(STATUS_INT_ENABLED, &priv->status);
1262         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1263 }
1264
1265 /* call this function to flush any scheduled tasklet */
1266 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1267 {
1268         /* wait to make sure we flush pending tasklet*/
1269         synchronize_irq(priv->pci_dev->irq);
1270         tasklet_kill(&priv->irq_tasklet);
1271 }
1272
1273 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1274 {
1275         clear_bit(STATUS_INT_ENABLED, &priv->status);
1276
1277         /* disable interrupts from uCode/NIC to host */
1278         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1279
1280         /* acknowledge/clear/reset any interrupts still pending
1281          * from uCode or flow handler (Rx/Tx DMA) */
1282         iwl_write32(priv, CSR_INT, 0xffffffff);
1283         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1284         IWL_DEBUG_ISR("Disabled interrupts\n");
1285 }
1286
1287
1288 /**
1289  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1290  */
1291 static void iwl_irq_handle_error(struct iwl_priv *priv)
1292 {
1293         /* Set the FW error flag -- cleared on iwl_down */
1294         set_bit(STATUS_FW_ERROR, &priv->status);
1295
1296         /* Cancel currently queued command. */
1297         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1298
1299 #ifdef CONFIG_IWLWIFI_DEBUG
1300         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1301                 iwl_dump_nic_error_log(priv);
1302                 iwl_dump_nic_event_log(priv);
1303                 iwl_print_rx_config_cmd(priv);
1304         }
1305 #endif
1306
1307         wake_up_interruptible(&priv->wait_command_queue);
1308
1309         /* Keep the restart process from trying to send host
1310          * commands by clearing the INIT status bit */
1311         clear_bit(STATUS_READY, &priv->status);
1312
1313         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1314                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1315                           "Restarting adapter due to uCode error.\n");
1316
1317                 if (iwl_is_associated(priv)) {
1318                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1319                                sizeof(priv->recovery_rxon));
1320                         priv->error_recovering = 1;
1321                 }
1322                 if (priv->cfg->mod_params->restart_fw)
1323                         queue_work(priv->workqueue, &priv->restart);
1324         }
1325 }
1326
1327 static void iwl_error_recovery(struct iwl_priv *priv)
1328 {
1329         unsigned long flags;
1330
1331         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1332                sizeof(priv->staging_rxon));
1333         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1334         iwl_commit_rxon(priv);
1335
1336         iwl_rxon_add_station(priv, priv->bssid, 1);
1337
1338         spin_lock_irqsave(&priv->lock, flags);
1339         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1340         priv->error_recovering = 0;
1341         spin_unlock_irqrestore(&priv->lock, flags);
1342 }
1343
1344 static void iwl_irq_tasklet(struct iwl_priv *priv)
1345 {
1346         u32 inta, handled = 0;
1347         u32 inta_fh;
1348         unsigned long flags;
1349 #ifdef CONFIG_IWLWIFI_DEBUG
1350         u32 inta_mask;
1351 #endif
1352
1353         spin_lock_irqsave(&priv->lock, flags);
1354
1355         /* Ack/clear/reset pending uCode interrupts.
1356          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1357          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1358         inta = iwl_read32(priv, CSR_INT);
1359         iwl_write32(priv, CSR_INT, inta);
1360
1361         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1362          * Any new interrupts that happen after this, either while we're
1363          * in this tasklet, or later, will show up in next ISR/tasklet. */
1364         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1365         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1366
1367 #ifdef CONFIG_IWLWIFI_DEBUG
1368         if (priv->debug_level & IWL_DL_ISR) {
1369                 /* just for debug */
1370                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1371                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1372                               inta, inta_mask, inta_fh);
1373         }
1374 #endif
1375
1376         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1377          * atomic, make sure that inta covers all the interrupts that
1378          * we've discovered, even if FH interrupt came in just after
1379          * reading CSR_INT. */
1380         if (inta_fh & CSR49_FH_INT_RX_MASK)
1381                 inta |= CSR_INT_BIT_FH_RX;
1382         if (inta_fh & CSR49_FH_INT_TX_MASK)
1383                 inta |= CSR_INT_BIT_FH_TX;
1384
1385         /* Now service all interrupt bits discovered above. */
1386         if (inta & CSR_INT_BIT_HW_ERR) {
1387                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1388
1389                 /* Tell the device to stop sending interrupts */
1390                 iwl_disable_interrupts(priv);
1391
1392                 iwl_irq_handle_error(priv);
1393
1394                 handled |= CSR_INT_BIT_HW_ERR;
1395
1396                 spin_unlock_irqrestore(&priv->lock, flags);
1397
1398                 return;
1399         }
1400
1401 #ifdef CONFIG_IWLWIFI_DEBUG
1402         if (priv->debug_level & (IWL_DL_ISR)) {
1403                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1404                 if (inta & CSR_INT_BIT_SCD)
1405                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1406                                       "the frame/frames.\n");
1407
1408                 /* Alive notification via Rx interrupt will do the real work */
1409                 if (inta & CSR_INT_BIT_ALIVE)
1410                         IWL_DEBUG_ISR("Alive interrupt\n");
1411         }
1412 #endif
1413         /* Safely ignore these bits for debug checks below */
1414         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1415
1416         /* HW RF KILL switch toggled */
1417         if (inta & CSR_INT_BIT_RF_KILL) {
1418                 int hw_rf_kill = 0;
1419                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1420                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1421                         hw_rf_kill = 1;
1422
1423                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1424                                 hw_rf_kill ? "disable radio" : "enable radio");
1425
1426                 /* driver only loads ucode once setting the interface up.
1427                  * the driver as well won't allow loading if RFKILL is set
1428                  * therefore no need to restart the driver from this handler
1429                  */
1430                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1431                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1432
1433                 handled |= CSR_INT_BIT_RF_KILL;
1434         }
1435
1436         /* Chip got too hot and stopped itself */
1437         if (inta & CSR_INT_BIT_CT_KILL) {
1438                 IWL_ERROR("Microcode CT kill error detected.\n");
1439                 handled |= CSR_INT_BIT_CT_KILL;
1440         }
1441
1442         /* Error detected by uCode */
1443         if (inta & CSR_INT_BIT_SW_ERR) {
1444                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1445                           inta);
1446                 iwl_irq_handle_error(priv);
1447                 handled |= CSR_INT_BIT_SW_ERR;
1448         }
1449
1450         /* uCode wakes up after power-down sleep */
1451         if (inta & CSR_INT_BIT_WAKEUP) {
1452                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1453                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1454                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1455                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1456                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1457                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1458                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1459                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1460
1461                 handled |= CSR_INT_BIT_WAKEUP;
1462         }
1463
1464         /* All uCode command responses, including Tx command responses,
1465          * Rx "responses" (frame-received notification), and other
1466          * notifications from uCode come through here*/
1467         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1468                 iwl_rx_handle(priv);
1469                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1470         }
1471
1472         if (inta & CSR_INT_BIT_FH_TX) {
1473                 IWL_DEBUG_ISR("Tx interrupt\n");
1474                 handled |= CSR_INT_BIT_FH_TX;
1475                 /* FH finished to write, send event */
1476                 priv->ucode_write_complete = 1;
1477                 wake_up_interruptible(&priv->wait_command_queue);
1478         }
1479
1480         if (inta & ~handled)
1481                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1482
1483         if (inta & ~CSR_INI_SET_MASK) {
1484                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1485                          inta & ~CSR_INI_SET_MASK);
1486                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1487         }
1488
1489         /* Re-enable all interrupts */
1490         /* only Re-enable if diabled by irq */
1491         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1492                 iwl_enable_interrupts(priv);
1493
1494 #ifdef CONFIG_IWLWIFI_DEBUG
1495         if (priv->debug_level & (IWL_DL_ISR)) {
1496                 inta = iwl_read32(priv, CSR_INT);
1497                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1498                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1499                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1500                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1501         }
1502 #endif
1503         spin_unlock_irqrestore(&priv->lock, flags);
1504 }
1505
1506 static irqreturn_t iwl_isr(int irq, void *data)
1507 {
1508         struct iwl_priv *priv = data;
1509         u32 inta, inta_mask;
1510         u32 inta_fh;
1511         if (!priv)
1512                 return IRQ_NONE;
1513
1514         spin_lock(&priv->lock);
1515
1516         /* Disable (but don't clear!) interrupts here to avoid
1517          *    back-to-back ISRs and sporadic interrupts from our NIC.
1518          * If we have something to service, the tasklet will re-enable ints.
1519          * If we *don't* have something, we'll re-enable before leaving here. */
1520         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1521         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1522
1523         /* Discover which interrupts are active/pending */
1524         inta = iwl_read32(priv, CSR_INT);
1525         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1526
1527         /* Ignore interrupt if there's nothing in NIC to service.
1528          * This may be due to IRQ shared with another device,
1529          * or due to sporadic interrupts thrown from our NIC. */
1530         if (!inta && !inta_fh) {
1531                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1532                 goto none;
1533         }
1534
1535         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1536                 /* Hardware disappeared. It might have already raised
1537                  * an interrupt */
1538                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1539                 goto unplugged;
1540         }
1541
1542         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1543                       inta, inta_mask, inta_fh);
1544
1545         inta &= ~CSR_INT_BIT_SCD;
1546
1547         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1548         if (likely(inta || inta_fh))
1549                 tasklet_schedule(&priv->irq_tasklet);
1550
1551  unplugged:
1552         spin_unlock(&priv->lock);
1553         return IRQ_HANDLED;
1554
1555  none:
1556         /* re-enable interrupts here since we don't have anything to service. */
1557         /* only Re-enable if diabled by irq */
1558         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1559                 iwl_enable_interrupts(priv);
1560         spin_unlock(&priv->lock);
1561         return IRQ_NONE;
1562 }
1563
1564 /******************************************************************************
1565  *
1566  * uCode download functions
1567  *
1568  ******************************************************************************/
1569
1570 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1571 {
1572         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1573         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1574         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1575         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1576         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1577         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1578 }
1579
1580 static void iwl_nic_start(struct iwl_priv *priv)
1581 {
1582         /* Remove all resets to allow NIC to operate */
1583         iwl_write32(priv, CSR_RESET, 0);
1584 }
1585
1586
1587 /**
1588  * iwl_read_ucode - Read uCode images from disk file.
1589  *
1590  * Copy into buffers for card to fetch via bus-mastering
1591  */
1592 static int iwl_read_ucode(struct iwl_priv *priv)
1593 {
1594         struct iwl_ucode *ucode;
1595         int ret;
1596         const struct firmware *ucode_raw;
1597         const char *name = priv->cfg->fw_name;
1598         u8 *src;
1599         size_t len;
1600         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1601
1602         /* Ask kernel firmware_class module to get the boot firmware off disk.
1603          * request_firmware() is synchronous, file is in memory on return. */
1604         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1605         if (ret < 0) {
1606                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1607                                         name, ret);
1608                 goto error;
1609         }
1610
1611         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1612                        name, ucode_raw->size);
1613
1614         /* Make sure that we got at least our header! */
1615         if (ucode_raw->size < sizeof(*ucode)) {
1616                 IWL_ERROR("File size way too small!\n");
1617                 ret = -EINVAL;
1618                 goto err_release;
1619         }
1620
1621         /* Data from ucode file:  header followed by uCode images */
1622         ucode = (void *)ucode_raw->data;
1623
1624         ver = le32_to_cpu(ucode->ver);
1625         inst_size = le32_to_cpu(ucode->inst_size);
1626         data_size = le32_to_cpu(ucode->data_size);
1627         init_size = le32_to_cpu(ucode->init_size);
1628         init_data_size = le32_to_cpu(ucode->init_data_size);
1629         boot_size = le32_to_cpu(ucode->boot_size);
1630
1631         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1632         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1633                        inst_size);
1634         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1635                        data_size);
1636         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1637                        init_size);
1638         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1639                        init_data_size);
1640         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1641                        boot_size);
1642
1643         /* Verify size of file vs. image size info in file's header */
1644         if (ucode_raw->size < sizeof(*ucode) +
1645                 inst_size + data_size + init_size +
1646                 init_data_size + boot_size) {
1647
1648                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1649                                (int)ucode_raw->size);
1650                 ret = -EINVAL;
1651                 goto err_release;
1652         }
1653
1654         /* Verify that uCode images will fit in card's SRAM */
1655         if (inst_size > priv->hw_params.max_inst_size) {
1656                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1657                                inst_size);
1658                 ret = -EINVAL;
1659                 goto err_release;
1660         }
1661
1662         if (data_size > priv->hw_params.max_data_size) {
1663                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1664                                 data_size);
1665                 ret = -EINVAL;
1666                 goto err_release;
1667         }
1668         if (init_size > priv->hw_params.max_inst_size) {
1669                 IWL_DEBUG_INFO
1670                     ("uCode init instr len %d too large to fit in\n",
1671                       init_size);
1672                 ret = -EINVAL;
1673                 goto err_release;
1674         }
1675         if (init_data_size > priv->hw_params.max_data_size) {
1676                 IWL_DEBUG_INFO
1677                     ("uCode init data len %d too large to fit in\n",
1678                       init_data_size);
1679                 ret = -EINVAL;
1680                 goto err_release;
1681         }
1682         if (boot_size > priv->hw_params.max_bsm_size) {
1683                 IWL_DEBUG_INFO
1684                     ("uCode boot instr len %d too large to fit in\n",
1685                       boot_size);
1686                 ret = -EINVAL;
1687                 goto err_release;
1688         }
1689
1690         /* Allocate ucode buffers for card's bus-master loading ... */
1691
1692         /* Runtime instructions and 2 copies of data:
1693          * 1) unmodified from disk
1694          * 2) backup cache for save/restore during power-downs */
1695         priv->ucode_code.len = inst_size;
1696         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1697
1698         priv->ucode_data.len = data_size;
1699         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1700
1701         priv->ucode_data_backup.len = data_size;
1702         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1703
1704         /* Initialization instructions and data */
1705         if (init_size && init_data_size) {
1706                 priv->ucode_init.len = init_size;
1707                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1708
1709                 priv->ucode_init_data.len = init_data_size;
1710                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1711
1712                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1713                         goto err_pci_alloc;
1714         }
1715
1716         /* Bootstrap (instructions only, no data) */
1717         if (boot_size) {
1718                 priv->ucode_boot.len = boot_size;
1719                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1720
1721                 if (!priv->ucode_boot.v_addr)
1722                         goto err_pci_alloc;
1723         }
1724
1725         /* Copy images into buffers for card's bus-master reads ... */
1726
1727         /* Runtime instructions (first block of data in file) */
1728         src = &ucode->data[0];
1729         len = priv->ucode_code.len;
1730         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1731         memcpy(priv->ucode_code.v_addr, src, len);
1732         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1733                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1734
1735         /* Runtime data (2nd block)
1736          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1737         src = &ucode->data[inst_size];
1738         len = priv->ucode_data.len;
1739         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1740         memcpy(priv->ucode_data.v_addr, src, len);
1741         memcpy(priv->ucode_data_backup.v_addr, src, len);
1742
1743         /* Initialization instructions (3rd block) */
1744         if (init_size) {
1745                 src = &ucode->data[inst_size + data_size];
1746                 len = priv->ucode_init.len;
1747                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1748                                 len);
1749                 memcpy(priv->ucode_init.v_addr, src, len);
1750         }
1751
1752         /* Initialization data (4th block) */
1753         if (init_data_size) {
1754                 src = &ucode->data[inst_size + data_size + init_size];
1755                 len = priv->ucode_init_data.len;
1756                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1757                                len);
1758                 memcpy(priv->ucode_init_data.v_addr, src, len);
1759         }
1760
1761         /* Bootstrap instructions (5th block) */
1762         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1763         len = priv->ucode_boot.len;
1764         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1765         memcpy(priv->ucode_boot.v_addr, src, len);
1766
1767         /* We have our copies now, allow OS release its copies */
1768         release_firmware(ucode_raw);
1769         return 0;
1770
1771  err_pci_alloc:
1772         IWL_ERROR("failed to allocate pci memory\n");
1773         ret = -ENOMEM;
1774         iwl_dealloc_ucode_pci(priv);
1775
1776  err_release:
1777         release_firmware(ucode_raw);
1778
1779  error:
1780         return ret;
1781 }
1782
1783 /* temporary */
1784 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1785                                  struct sk_buff *skb);
1786
1787 /**
1788  * iwl_alive_start - called after REPLY_ALIVE notification received
1789  *                   from protocol/runtime uCode (initialization uCode's
1790  *                   Alive gets handled by iwl_init_alive_start()).
1791  */
1792 static void iwl_alive_start(struct iwl_priv *priv)
1793 {
1794         int ret = 0;
1795
1796         IWL_DEBUG_INFO("Runtime Alive received.\n");
1797
1798         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1799                 /* We had an error bringing up the hardware, so take it
1800                  * all the way back down so we can try again */
1801                 IWL_DEBUG_INFO("Alive failed.\n");
1802                 goto restart;
1803         }
1804
1805         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1806          * This is a paranoid check, because we would not have gotten the
1807          * "runtime" alive if code weren't properly loaded.  */
1808         if (iwl_verify_ucode(priv)) {
1809                 /* Runtime instruction load was bad;
1810                  * take it all the way back down so we can try again */
1811                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1812                 goto restart;
1813         }
1814
1815         iwl_clear_stations_table(priv);
1816         ret = priv->cfg->ops->lib->alive_notify(priv);
1817         if (ret) {
1818                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1819                             ret);
1820                 goto restart;
1821         }
1822
1823         /* After the ALIVE response, we can send host commands to the uCode */
1824         set_bit(STATUS_ALIVE, &priv->status);
1825
1826         if (iwl_is_rfkill(priv))
1827                 return;
1828
1829         ieee80211_wake_queues(priv->hw);
1830
1831         priv->active_rate = priv->rates_mask;
1832         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1833
1834         if (iwl_is_associated(priv)) {
1835                 struct iwl_rxon_cmd *active_rxon =
1836                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1837
1838                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1839                        sizeof(priv->staging_rxon));
1840                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1841         } else {
1842                 /* Initialize our rx_config data */
1843                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1844                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1845         }
1846
1847         /* Configure Bluetooth device coexistence support */
1848         iwl_send_bt_config(priv);
1849
1850         iwl_reset_run_time_calib(priv);
1851
1852         /* Configure the adapter for unassociated operation */
1853         iwl_commit_rxon(priv);
1854
1855         /* At this point, the NIC is initialized and operational */
1856         iwl_rf_kill_ct_config(priv);
1857
1858         iwl_leds_register(priv);
1859
1860         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1861         set_bit(STATUS_READY, &priv->status);
1862         wake_up_interruptible(&priv->wait_command_queue);
1863
1864         if (priv->error_recovering)
1865                 iwl_error_recovery(priv);
1866
1867         iwl_power_update_mode(priv, 1);
1868
1869         /* reassociate for ADHOC mode */
1870         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1871                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1872                                                                 priv->vif);
1873                 if (beacon)
1874                         iwl_mac_beacon_update(priv->hw, beacon);
1875         }
1876
1877
1878         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1879                 iwl_set_mode(priv, priv->iw_mode);
1880
1881         return;
1882
1883  restart:
1884         queue_work(priv->workqueue, &priv->restart);
1885 }
1886
1887 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1888
1889 static void __iwl_down(struct iwl_priv *priv)
1890 {
1891         unsigned long flags;
1892         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1893
1894         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1895
1896         if (!exit_pending)
1897                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1898
1899         iwl_leds_unregister(priv);
1900
1901         iwl_clear_stations_table(priv);
1902
1903         /* Unblock any waiting calls */
1904         wake_up_interruptible_all(&priv->wait_command_queue);
1905
1906         /* Wipe out the EXIT_PENDING status bit if we are not actually
1907          * exiting the module */
1908         if (!exit_pending)
1909                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1910
1911         /* stop and reset the on-board processor */
1912         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1913
1914         /* tell the device to stop sending interrupts */
1915         spin_lock_irqsave(&priv->lock, flags);
1916         iwl_disable_interrupts(priv);
1917         spin_unlock_irqrestore(&priv->lock, flags);
1918         iwl_synchronize_irq(priv);
1919
1920         if (priv->mac80211_registered)
1921                 ieee80211_stop_queues(priv->hw);
1922
1923         /* If we have not previously called iwl_init() then
1924          * clear all bits but the RF Kill and SUSPEND bits and return */
1925         if (!iwl_is_init(priv)) {
1926                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1927                                         STATUS_RF_KILL_HW |
1928                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1929                                         STATUS_RF_KILL_SW |
1930                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1931                                         STATUS_GEO_CONFIGURED |
1932                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1933                                         STATUS_IN_SUSPEND |
1934                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1935                                         STATUS_EXIT_PENDING;
1936                 goto exit;
1937         }
1938
1939         /* ...otherwise clear out all the status bits but the RF Kill and
1940          * SUSPEND bits and continue taking the NIC down. */
1941         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1942                                 STATUS_RF_KILL_HW |
1943                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1944                                 STATUS_RF_KILL_SW |
1945                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1946                                 STATUS_GEO_CONFIGURED |
1947                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1948                                 STATUS_IN_SUSPEND |
1949                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1950                                 STATUS_FW_ERROR |
1951                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1952                                 STATUS_EXIT_PENDING;
1953
1954         spin_lock_irqsave(&priv->lock, flags);
1955         iwl_clear_bit(priv, CSR_GP_CNTRL,
1956                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1957         spin_unlock_irqrestore(&priv->lock, flags);
1958
1959         iwl_txq_ctx_stop(priv);
1960         iwl_rxq_stop(priv);
1961
1962         spin_lock_irqsave(&priv->lock, flags);
1963         if (!iwl_grab_nic_access(priv)) {
1964                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1965                                          APMG_CLK_VAL_DMA_CLK_RQT);
1966                 iwl_release_nic_access(priv);
1967         }
1968         spin_unlock_irqrestore(&priv->lock, flags);
1969
1970         udelay(5);
1971
1972         /* FIXME: apm_ops.suspend(priv) */
1973         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1974                 priv->cfg->ops->lib->apm_ops.stop(priv);
1975         else
1976                 priv->cfg->ops->lib->apm_ops.reset(priv);
1977  exit:
1978         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
1979
1980         if (priv->ibss_beacon)
1981                 dev_kfree_skb(priv->ibss_beacon);
1982         priv->ibss_beacon = NULL;
1983
1984         /* clear out any free frames */
1985         iwl_clear_free_frames(priv);
1986 }
1987
1988 static void iwl_down(struct iwl_priv *priv)
1989 {
1990         mutex_lock(&priv->mutex);
1991         __iwl_down(priv);
1992         mutex_unlock(&priv->mutex);
1993
1994         iwl_cancel_deferred_work(priv);
1995 }
1996
1997 #define MAX_HW_RESTARTS 5
1998
1999 static int __iwl_up(struct iwl_priv *priv)
2000 {
2001         int i;
2002         int ret;
2003
2004         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2005                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2006                 return -EIO;
2007         }
2008
2009         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2010                 IWL_ERROR("ucode not available for device bringup\n");
2011                 return -EIO;
2012         }
2013
2014         /* If platform's RF_KILL switch is NOT set to KILL */
2015         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2016                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2017         else
2018                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2019
2020         if (iwl_is_rfkill(priv)) {
2021                 iwl_enable_interrupts(priv);
2022                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2023                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2024                 return 0;
2025         }
2026
2027         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2028
2029         ret = iwl_hw_nic_init(priv);
2030         if (ret) {
2031                 IWL_ERROR("Unable to init nic\n");
2032                 return ret;
2033         }
2034
2035         /* make sure rfkill handshake bits are cleared */
2036         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2037         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2038                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2039
2040         /* clear (again), then enable host interrupts */
2041         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2042         iwl_enable_interrupts(priv);
2043
2044         /* really make sure rfkill handshake bits are cleared */
2045         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2046         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2047
2048         /* Copy original ucode data image from disk into backup cache.
2049          * This will be used to initialize the on-board processor's
2050          * data SRAM for a clean start when the runtime program first loads. */
2051         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2052                priv->ucode_data.len);
2053
2054         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2055
2056                 iwl_clear_stations_table(priv);
2057
2058                 /* load bootstrap state machine,
2059                  * load bootstrap program into processor's memory,
2060                  * prepare to load the "initialize" uCode */
2061                 ret = priv->cfg->ops->lib->load_ucode(priv);
2062
2063                 if (ret) {
2064                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2065                         continue;
2066                 }
2067
2068                 /* Clear out the uCode error bit if it is set */
2069                 clear_bit(STATUS_FW_ERROR, &priv->status);
2070
2071                 /* start card; "initialize" will load runtime ucode */
2072                 iwl_nic_start(priv);
2073
2074                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2075
2076                 return 0;
2077         }
2078
2079         set_bit(STATUS_EXIT_PENDING, &priv->status);
2080         __iwl_down(priv);
2081         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2082
2083         /* tried to restart and config the device for as long as our
2084          * patience could withstand */
2085         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2086         return -EIO;
2087 }
2088
2089
2090 /*****************************************************************************
2091  *
2092  * Workqueue callbacks
2093  *
2094  *****************************************************************************/
2095
2096 static void iwl_bg_init_alive_start(struct work_struct *data)
2097 {
2098         struct iwl_priv *priv =
2099             container_of(data, struct iwl_priv, init_alive_start.work);
2100
2101         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2102                 return;
2103
2104         mutex_lock(&priv->mutex);
2105         priv->cfg->ops->lib->init_alive_start(priv);
2106         mutex_unlock(&priv->mutex);
2107 }
2108
2109 static void iwl_bg_alive_start(struct work_struct *data)
2110 {
2111         struct iwl_priv *priv =
2112             container_of(data, struct iwl_priv, alive_start.work);
2113
2114         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2115                 return;
2116
2117         mutex_lock(&priv->mutex);
2118         iwl_alive_start(priv);
2119         mutex_unlock(&priv->mutex);
2120 }
2121
2122 static void iwl_bg_rf_kill(struct work_struct *work)
2123 {
2124         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2125
2126         wake_up_interruptible(&priv->wait_command_queue);
2127
2128         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2129                 return;
2130
2131         mutex_lock(&priv->mutex);
2132
2133         if (!iwl_is_rfkill(priv)) {
2134                 IWL_DEBUG(IWL_DL_RF_KILL,
2135                           "HW and/or SW RF Kill no longer active, restarting "
2136                           "device\n");
2137                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2138                         queue_work(priv->workqueue, &priv->restart);
2139         } else {
2140                 /* make sure mac80211 stop sending Tx frame */
2141                 if (priv->mac80211_registered)
2142                         ieee80211_stop_queues(priv->hw);
2143
2144                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2145                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2146                                           "disabled by SW switch\n");
2147                 else
2148                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2149                                     "Kill switch must be turned off for "
2150                                     "wireless networking to work.\n");
2151         }
2152         mutex_unlock(&priv->mutex);
2153         iwl_rfkill_set_hw_state(priv);
2154 }
2155
2156 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2157 {
2158         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2159                         run_time_calib_work);
2160
2161         mutex_lock(&priv->mutex);
2162
2163         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2164             test_bit(STATUS_SCANNING, &priv->status)) {
2165                 mutex_unlock(&priv->mutex);
2166                 return;
2167         }
2168
2169         if (priv->start_calib) {
2170                 iwl_chain_noise_calibration(priv, &priv->statistics);
2171
2172                 iwl_sensitivity_calibration(priv, &priv->statistics);
2173         }
2174
2175         mutex_unlock(&priv->mutex);
2176         return;
2177 }
2178
2179 static void iwl_bg_up(struct work_struct *data)
2180 {
2181         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2182
2183         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2184                 return;
2185
2186         mutex_lock(&priv->mutex);
2187         __iwl_up(priv);
2188         mutex_unlock(&priv->mutex);
2189         iwl_rfkill_set_hw_state(priv);
2190 }
2191
2192 static void iwl_bg_restart(struct work_struct *data)
2193 {
2194         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2195
2196         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2197                 return;
2198
2199         iwl_down(priv);
2200         queue_work(priv->workqueue, &priv->up);
2201 }
2202
2203 static void iwl_bg_rx_replenish(struct work_struct *data)
2204 {
2205         struct iwl_priv *priv =
2206             container_of(data, struct iwl_priv, rx_replenish);
2207
2208         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2209                 return;
2210
2211         mutex_lock(&priv->mutex);
2212         iwl_rx_replenish(priv);
2213         mutex_unlock(&priv->mutex);
2214 }
2215
2216 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2217
2218 static void iwl_post_associate(struct iwl_priv *priv)
2219 {
2220         struct ieee80211_conf *conf = NULL;
2221         int ret = 0;
2222         unsigned long flags;
2223
2224         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2225                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2226                 return;
2227         }
2228
2229         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2230                         priv->assoc_id, priv->active_rxon.bssid_addr);
2231
2232
2233         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2234                 return;
2235
2236
2237         if (!priv->vif || !priv->is_open)
2238                 return;
2239
2240         iwl_power_cancel_timeout(priv);
2241         iwl_scan_cancel_timeout(priv, 200);
2242
2243         conf = ieee80211_get_hw_conf(priv->hw);
2244
2245         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2246         iwl_commit_rxon(priv);
2247
2248         iwl_setup_rxon_timing(priv);
2249         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2250                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2251         if (ret)
2252                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2253                             "Attempting to continue.\n");
2254
2255         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2256
2257         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2258
2259         iwl_set_rxon_chain(priv);
2260         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2261
2262         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2263                         priv->assoc_id, priv->beacon_int);
2264
2265         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2266                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2267         else
2268                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2269
2270         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2271                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2272                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2273                 else
2274                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2275
2276                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2277                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2278
2279         }
2280
2281         iwl_commit_rxon(priv);
2282
2283         switch (priv->iw_mode) {
2284         case NL80211_IFTYPE_STATION:
2285                 break;
2286
2287         case NL80211_IFTYPE_ADHOC:
2288
2289                 /* assume default assoc id */
2290                 priv->assoc_id = 1;
2291
2292                 iwl_rxon_add_station(priv, priv->bssid, 0);
2293                 iwl_send_beacon_cmd(priv);
2294
2295                 break;
2296
2297         default:
2298                 IWL_ERROR("%s Should not be called in %d mode\n",
2299                           __func__, priv->iw_mode);
2300                 break;
2301         }
2302
2303         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2304                 priv->assoc_station_added = 1;
2305
2306         spin_lock_irqsave(&priv->lock, flags);
2307         iwl_activate_qos(priv, 0);
2308         spin_unlock_irqrestore(&priv->lock, flags);
2309
2310         /* the chain noise calibration will enabled PM upon completion
2311          * If chain noise has already been run, then we need to enable
2312          * power management here */
2313         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2314                 iwl_power_enable_management(priv);
2315
2316         /* Enable Rx differential gain and sensitivity calibrations */
2317         iwl_chain_noise_reset(priv);
2318         priv->start_calib = 1;
2319
2320 }
2321
2322 /*****************************************************************************
2323  *
2324  * mac80211 entry point functions
2325  *
2326  *****************************************************************************/
2327
2328 #define UCODE_READY_TIMEOUT     (4 * HZ)
2329
2330 static int iwl_mac_start(struct ieee80211_hw *hw)
2331 {
2332         struct iwl_priv *priv = hw->priv;
2333         int ret;
2334         u16 pci_cmd;
2335
2336         IWL_DEBUG_MAC80211("enter\n");
2337
2338         if (pci_enable_device(priv->pci_dev)) {
2339                 IWL_ERROR("Fail to pci_enable_device\n");
2340                 return -ENODEV;
2341         }
2342         pci_restore_state(priv->pci_dev);
2343         pci_enable_msi(priv->pci_dev);
2344
2345         /* enable interrupts if needed: hw bug w/a */
2346         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2347         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2348                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2349                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2350         }
2351
2352         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2353                           DRV_NAME, priv);
2354         if (ret) {
2355                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2356                 goto out_disable_msi;
2357         }
2358
2359         /* we should be verifying the device is ready to be opened */
2360         mutex_lock(&priv->mutex);
2361
2362         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2363         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2364          * ucode filename and max sizes are card-specific. */
2365
2366         if (!priv->ucode_code.len) {
2367                 ret = iwl_read_ucode(priv);
2368                 if (ret) {
2369                         IWL_ERROR("Could not read microcode: %d\n", ret);
2370                         mutex_unlock(&priv->mutex);
2371                         goto out_release_irq;
2372                 }
2373         }
2374
2375         ret = __iwl_up(priv);
2376
2377         mutex_unlock(&priv->mutex);
2378
2379         iwl_rfkill_set_hw_state(priv);
2380
2381         if (ret)
2382                 goto out_release_irq;
2383
2384         if (iwl_is_rfkill(priv))
2385                 goto out;
2386
2387         IWL_DEBUG_INFO("Start UP work done.\n");
2388
2389         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2390                 return 0;
2391
2392         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2393          * mac80211 will not be run successfully. */
2394         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2395                         test_bit(STATUS_READY, &priv->status),
2396                         UCODE_READY_TIMEOUT);
2397         if (!ret) {
2398                 if (!test_bit(STATUS_READY, &priv->status)) {
2399                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2400                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2401                         ret = -ETIMEDOUT;
2402                         goto out_release_irq;
2403                 }
2404         }
2405
2406 out:
2407         priv->is_open = 1;
2408         IWL_DEBUG_MAC80211("leave\n");
2409         return 0;
2410
2411 out_release_irq:
2412         free_irq(priv->pci_dev->irq, priv);
2413 out_disable_msi:
2414         pci_disable_msi(priv->pci_dev);
2415         pci_disable_device(priv->pci_dev);
2416         priv->is_open = 0;
2417         IWL_DEBUG_MAC80211("leave - failed\n");
2418         return ret;
2419 }
2420
2421 static void iwl_mac_stop(struct ieee80211_hw *hw)
2422 {
2423         struct iwl_priv *priv = hw->priv;
2424
2425         IWL_DEBUG_MAC80211("enter\n");
2426
2427         if (!priv->is_open) {
2428                 IWL_DEBUG_MAC80211("leave - skip\n");
2429                 return;
2430         }
2431
2432         priv->is_open = 0;
2433
2434         if (iwl_is_ready_rf(priv)) {
2435                 /* stop mac, cancel any scan request and clear
2436                  * RXON_FILTER_ASSOC_MSK BIT
2437                  */
2438                 mutex_lock(&priv->mutex);
2439                 iwl_scan_cancel_timeout(priv, 100);
2440                 mutex_unlock(&priv->mutex);
2441         }
2442
2443         iwl_down(priv);
2444
2445         flush_workqueue(priv->workqueue);
2446         free_irq(priv->pci_dev->irq, priv);
2447         pci_disable_msi(priv->pci_dev);
2448         pci_save_state(priv->pci_dev);
2449         pci_disable_device(priv->pci_dev);
2450
2451         IWL_DEBUG_MAC80211("leave\n");
2452 }
2453
2454 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2455 {
2456         struct iwl_priv *priv = hw->priv;
2457
2458         IWL_DEBUG_MACDUMP("enter\n");
2459
2460         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2461                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2462
2463         if (iwl_tx_skb(priv, skb))
2464                 dev_kfree_skb_any(skb);
2465
2466         IWL_DEBUG_MACDUMP("leave\n");
2467         return 0;
2468 }
2469
2470 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2471                                  struct ieee80211_if_init_conf *conf)
2472 {
2473         struct iwl_priv *priv = hw->priv;
2474         unsigned long flags;
2475
2476         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2477
2478         if (priv->vif) {
2479                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2480                 return -EOPNOTSUPP;
2481         }
2482
2483         spin_lock_irqsave(&priv->lock, flags);
2484         priv->vif = conf->vif;
2485         priv->iw_mode = conf->type;
2486
2487         spin_unlock_irqrestore(&priv->lock, flags);
2488
2489         mutex_lock(&priv->mutex);
2490
2491         if (conf->mac_addr) {
2492                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2493                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2494         }
2495
2496         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2497                 /* we are not ready, will run again when ready */
2498                 set_bit(STATUS_MODE_PENDING, &priv->status);
2499
2500         mutex_unlock(&priv->mutex);
2501
2502         IWL_DEBUG_MAC80211("leave\n");
2503         return 0;
2504 }
2505
2506 /**
2507  * iwl_mac_config - mac80211 config callback
2508  *
2509  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2510  * be set inappropriately and the driver currently sets the hardware up to
2511  * use it whenever needed.
2512  */
2513 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2514 {
2515         struct iwl_priv *priv = hw->priv;
2516         const struct iwl_channel_info *ch_info;
2517         struct ieee80211_conf *conf = &hw->conf;
2518         unsigned long flags;
2519         int ret = 0;
2520         u16 channel;
2521
2522         mutex_lock(&priv->mutex);
2523         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2524
2525         priv->current_ht_config.is_ht = conf->ht.enabled;
2526
2527         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2528                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2529                 goto out;
2530         }
2531
2532         if (!conf->radio_enabled)
2533                 iwl_radio_kill_sw_disable_radio(priv);
2534
2535         if (!iwl_is_ready(priv)) {
2536                 IWL_DEBUG_MAC80211("leave - not ready\n");
2537                 ret = -EIO;
2538                 goto out;
2539         }
2540
2541         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2542                      test_bit(STATUS_SCANNING, &priv->status))) {
2543                 IWL_DEBUG_MAC80211("leave - scanning\n");
2544                 mutex_unlock(&priv->mutex);
2545                 return 0;
2546         }
2547
2548         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2549         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2550         if (!is_channel_valid(ch_info)) {
2551                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2552                 ret = -EINVAL;
2553                 goto out;
2554         }
2555
2556         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2557             !is_channel_ibss(ch_info)) {
2558                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2559                         conf->channel->hw_value, conf->channel->band);
2560                 ret = -EINVAL;
2561                 goto out;
2562         }
2563
2564         spin_lock_irqsave(&priv->lock, flags);
2565
2566
2567         /* if we are switching from ht to 2.4 clear flags
2568          * from any ht related info since 2.4 does not
2569          * support ht */
2570         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2571 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2572             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2573 #endif
2574         )
2575                 priv->staging_rxon.flags = 0;
2576
2577         iwl_set_rxon_channel(priv, conf->channel);
2578
2579         iwl_set_flags_for_band(priv, conf->channel->band);
2580
2581         /* The list of supported rates and rate mask can be different
2582          * for each band; since the band may have changed, reset
2583          * the rate mask to what mac80211 lists */
2584         iwl_set_rate(priv);
2585
2586         spin_unlock_irqrestore(&priv->lock, flags);
2587
2588 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2589         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2590                 iwl_hw_channel_switch(priv, conf->channel);
2591                 goto out;
2592         }
2593 #endif
2594
2595         if (!conf->radio_enabled) {
2596                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2597                 goto out;
2598         }
2599
2600         if (iwl_is_rfkill(priv)) {
2601                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2602                 ret = -EIO;
2603                 goto out;
2604         }
2605
2606         if (conf->flags & IEEE80211_CONF_PS)
2607                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2608         else
2609                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2610         if (ret)
2611                 IWL_DEBUG_MAC80211("Error setting power level\n");
2612
2613         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2614                            priv->tx_power_user_lmt, conf->power_level);
2615
2616         iwl_set_tx_power(priv, conf->power_level, false);
2617
2618         iwl_set_rate(priv);
2619
2620         if (memcmp(&priv->active_rxon,
2621                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2622                 iwl_commit_rxon(priv);
2623         else
2624                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2625
2626         IWL_DEBUG_MAC80211("leave\n");
2627
2628 out:
2629         mutex_unlock(&priv->mutex);
2630         return ret;
2631 }
2632
2633 static void iwl_config_ap(struct iwl_priv *priv)
2634 {
2635         int ret = 0;
2636         unsigned long flags;
2637
2638         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2639                 return;
2640
2641         /* The following should be done only at AP bring up */
2642         if (!iwl_is_associated(priv)) {
2643
2644                 /* RXON - unassoc (to set timing command) */
2645                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2646                 iwl_commit_rxon(priv);
2647
2648                 /* RXON Timing */
2649                 iwl_setup_rxon_timing(priv);
2650                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2651                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2652                 if (ret)
2653                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2654                                         "Attempting to continue.\n");
2655
2656                 iwl_set_rxon_chain(priv);
2657
2658                 /* FIXME: what should be the assoc_id for AP? */
2659                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2660                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2661                         priv->staging_rxon.flags |=
2662                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2663                 else
2664                         priv->staging_rxon.flags &=
2665                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2666
2667                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2668                         if (priv->assoc_capability &
2669                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2670                                 priv->staging_rxon.flags |=
2671                                         RXON_FLG_SHORT_SLOT_MSK;
2672                         else
2673                                 priv->staging_rxon.flags &=
2674                                         ~RXON_FLG_SHORT_SLOT_MSK;
2675
2676                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2677                                 priv->staging_rxon.flags &=
2678                                         ~RXON_FLG_SHORT_SLOT_MSK;
2679                 }
2680                 /* restore RXON assoc */
2681                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2682                 iwl_commit_rxon(priv);
2683                 spin_lock_irqsave(&priv->lock, flags);
2684                 iwl_activate_qos(priv, 1);
2685                 spin_unlock_irqrestore(&priv->lock, flags);
2686                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2687         }
2688         iwl_send_beacon_cmd(priv);
2689
2690         /* FIXME - we need to add code here to detect a totally new
2691          * configuration, reset the AP, unassoc, rxon timing, assoc,
2692          * clear sta table, add BCAST sta... */
2693 }
2694
2695
2696 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2697                                         struct ieee80211_vif *vif,
2698                                     struct ieee80211_if_conf *conf)
2699 {
2700         struct iwl_priv *priv = hw->priv;
2701         int rc;
2702
2703         if (conf == NULL)
2704                 return -EIO;
2705
2706         if (priv->vif != vif) {
2707                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2708                 return 0;
2709         }
2710
2711         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2712             conf->changed & IEEE80211_IFCC_BEACON) {
2713                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2714                 if (!beacon)
2715                         return -ENOMEM;
2716                 mutex_lock(&priv->mutex);
2717                 rc = iwl_mac_beacon_update(hw, beacon);
2718                 mutex_unlock(&priv->mutex);
2719                 if (rc)
2720                         return rc;
2721         }
2722
2723         if (!iwl_is_alive(priv))
2724                 return -EAGAIN;
2725
2726         mutex_lock(&priv->mutex);
2727
2728         if (conf->bssid)
2729                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2730
2731 /*
2732  * very dubious code was here; the probe filtering flag is never set:
2733  *
2734         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2735             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2736  */
2737
2738         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2739                 if (!conf->bssid) {
2740                         conf->bssid = priv->mac_addr;
2741                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2742                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2743                                            conf->bssid);
2744                 }
2745                 if (priv->ibss_beacon)
2746                         dev_kfree_skb(priv->ibss_beacon);
2747
2748                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2749         }
2750
2751         if (iwl_is_rfkill(priv))
2752                 goto done;
2753
2754         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2755             !is_multicast_ether_addr(conf->bssid)) {
2756                 /* If there is currently a HW scan going on in the background
2757                  * then we need to cancel it else the RXON below will fail. */
2758                 if (iwl_scan_cancel_timeout(priv, 100)) {
2759                         IWL_WARNING("Aborted scan still in progress "
2760                                     "after 100ms\n");
2761                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2762                         mutex_unlock(&priv->mutex);
2763                         return -EAGAIN;
2764                 }
2765                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2766
2767                 /* TODO: Audit driver for usage of these members and see
2768                  * if mac80211 deprecates them (priv->bssid looks like it
2769                  * shouldn't be there, but I haven't scanned the IBSS code
2770                  * to verify) - jpk */
2771                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2772
2773                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2774                         iwl_config_ap(priv);
2775                 else {
2776                         rc = iwl_commit_rxon(priv);
2777                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2778                                 iwl_rxon_add_station(
2779                                         priv, priv->active_rxon.bssid_addr, 1);
2780                 }
2781
2782         } else {
2783                 iwl_scan_cancel_timeout(priv, 100);
2784                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2785                 iwl_commit_rxon(priv);
2786         }
2787
2788  done:
2789         IWL_DEBUG_MAC80211("leave\n");
2790         mutex_unlock(&priv->mutex);
2791
2792         return 0;
2793 }
2794
2795 static void iwl_configure_filter(struct ieee80211_hw *hw,
2796                                  unsigned int changed_flags,
2797                                  unsigned int *total_flags,
2798                                  int mc_count, struct dev_addr_list *mc_list)
2799 {
2800         struct iwl_priv *priv = hw->priv;
2801         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2802
2803         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2804                         changed_flags, *total_flags);
2805
2806         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2807                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2808                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2809                 else
2810                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2811         }
2812         if (changed_flags & FIF_ALLMULTI) {
2813                 if (*total_flags & FIF_ALLMULTI)
2814                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2815                 else
2816                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2817         }
2818         if (changed_flags & FIF_CONTROL) {
2819                 if (*total_flags & FIF_CONTROL)
2820                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2821                 else
2822                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2823         }
2824         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2825                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2826                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2827                 else
2828                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2829         }
2830
2831         /* We avoid iwl_commit_rxon here to commit the new filter flags
2832          * since mac80211 will call ieee80211_hw_config immediately.
2833          * (mc_list is not supported at this time). Otherwise, we need to
2834          * queue a background iwl_commit_rxon work.
2835          */
2836
2837         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2838                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2839 }
2840
2841 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2842                                      struct ieee80211_if_init_conf *conf)
2843 {
2844         struct iwl_priv *priv = hw->priv;
2845
2846         IWL_DEBUG_MAC80211("enter\n");
2847
2848         mutex_lock(&priv->mutex);
2849
2850         if (iwl_is_ready_rf(priv)) {
2851                 iwl_scan_cancel_timeout(priv, 100);
2852                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2853                 iwl_commit_rxon(priv);
2854         }
2855         if (priv->vif == conf->vif) {
2856                 priv->vif = NULL;
2857                 memset(priv->bssid, 0, ETH_ALEN);
2858         }
2859         mutex_unlock(&priv->mutex);
2860
2861         IWL_DEBUG_MAC80211("leave\n");
2862
2863 }
2864
2865 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2866 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2867                                      struct ieee80211_vif *vif,
2868                                      struct ieee80211_bss_conf *bss_conf,
2869                                      u32 changes)
2870 {
2871         struct iwl_priv *priv = hw->priv;
2872
2873         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2874
2875         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2876                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2877                                    bss_conf->use_short_preamble);
2878                 if (bss_conf->use_short_preamble)
2879                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2880                 else
2881                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2882         }
2883
2884         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2885                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2886                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2887                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2888                 else
2889                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2890         }
2891
2892         if (changes & BSS_CHANGED_HT) {
2893                 iwl_ht_conf(priv, bss_conf);
2894                 iwl_set_rxon_chain(priv);
2895         }
2896
2897         if (changes & BSS_CHANGED_ASSOC) {
2898                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2899                 /* This should never happen as this function should
2900                  * never be called from interrupt context. */
2901                 if (WARN_ON_ONCE(in_interrupt()))
2902                         return;
2903                 if (bss_conf->assoc) {
2904                         priv->assoc_id = bss_conf->aid;
2905                         priv->beacon_int = bss_conf->beacon_int;
2906                         priv->power_data.dtim_period = bss_conf->dtim_period;
2907                         priv->timestamp = bss_conf->timestamp;
2908                         priv->assoc_capability = bss_conf->assoc_capability;
2909
2910                         /* we have just associated, don't start scan too early
2911                          * leave time for EAPOL exchange to complete
2912                          */
2913                         priv->next_scan_jiffies = jiffies +
2914                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2915                         mutex_lock(&priv->mutex);
2916                         iwl_post_associate(priv);
2917                         mutex_unlock(&priv->mutex);
2918                 } else {
2919                         priv->assoc_id = 0;
2920                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2921                 }
2922         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2923                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2924                         iwl_send_rxon_assoc(priv);
2925         }
2926
2927 }
2928
2929 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2930 {
2931         unsigned long flags;
2932         struct iwl_priv *priv = hw->priv;
2933         int ret;
2934
2935         IWL_DEBUG_MAC80211("enter\n");
2936
2937         mutex_lock(&priv->mutex);
2938         spin_lock_irqsave(&priv->lock, flags);
2939
2940         if (!iwl_is_ready_rf(priv)) {
2941                 ret = -EIO;
2942                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2943                 goto out_unlock;
2944         }
2945
2946         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
2947                 ret = -EIO;
2948                 IWL_ERROR("ERROR: APs don't scan\n");
2949                 goto out_unlock;
2950         }
2951
2952         /* We don't schedule scan within next_scan_jiffies period.
2953          * Avoid scanning during possible EAPOL exchange, return
2954          * success immediately.
2955          */
2956         if (priv->next_scan_jiffies &&
2957             time_after(priv->next_scan_jiffies, jiffies)) {
2958                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2959                 queue_work(priv->workqueue, &priv->scan_completed);
2960                 ret = 0;
2961                 goto out_unlock;
2962         }
2963
2964         /* if we just finished scan ask for delay */
2965         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2966             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2967                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2968                 queue_work(priv->workqueue, &priv->scan_completed);
2969                 ret = 0;
2970                 goto out_unlock;
2971         }
2972
2973         if (ssid_len) {
2974                 priv->one_direct_scan = 1;
2975                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2976                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2977         } else {
2978                 priv->one_direct_scan = 0;
2979         }
2980
2981         ret = iwl_scan_initiate(priv);
2982
2983         IWL_DEBUG_MAC80211("leave\n");
2984
2985 out_unlock:
2986         spin_unlock_irqrestore(&priv->lock, flags);
2987         mutex_unlock(&priv->mutex);
2988
2989         return ret;
2990 }
2991
2992 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
2993                         struct ieee80211_key_conf *keyconf, const u8 *addr,
2994                         u32 iv32, u16 *phase1key)
2995 {
2996
2997         struct iwl_priv *priv = hw->priv;
2998         IWL_DEBUG_MAC80211("enter\n");
2999
3000         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3001
3002         IWL_DEBUG_MAC80211("leave\n");
3003 }
3004
3005 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3006                            const u8 *local_addr, const u8 *addr,
3007                            struct ieee80211_key_conf *key)
3008 {
3009         struct iwl_priv *priv = hw->priv;
3010         int ret = 0;
3011         u8 sta_id = IWL_INVALID_STATION;
3012         u8 is_default_wep_key = 0;
3013
3014         IWL_DEBUG_MAC80211("enter\n");
3015
3016         if (priv->hw_params.sw_crypto) {
3017                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3018                 return -EOPNOTSUPP;
3019         }
3020
3021         if (is_zero_ether_addr(addr))
3022                 /* only support pairwise keys */
3023                 return -EOPNOTSUPP;
3024
3025         sta_id = iwl_find_station(priv, addr);
3026         if (sta_id == IWL_INVALID_STATION) {
3027                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3028                                    addr);
3029                 return -EINVAL;
3030
3031         }
3032
3033         mutex_lock(&priv->mutex);
3034         iwl_scan_cancel_timeout(priv, 100);
3035         mutex_unlock(&priv->mutex);
3036
3037         /* If we are getting WEP group key and we didn't receive any key mapping
3038          * so far, we are in legacy wep mode (group key only), otherwise we are
3039          * in 1X mode.
3040          * In legacy wep mode, we use another host command to the uCode */
3041         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3042                 priv->iw_mode != NL80211_IFTYPE_AP) {
3043                 if (cmd == SET_KEY)
3044                         is_default_wep_key = !priv->key_mapping_key;
3045                 else
3046                         is_default_wep_key =
3047                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3048         }
3049
3050         switch (cmd) {
3051         case SET_KEY:
3052                 if (is_default_wep_key)
3053                         ret = iwl_set_default_wep_key(priv, key);
3054                 else
3055                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3056
3057                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3058                 break;
3059         case DISABLE_KEY:
3060                 if (is_default_wep_key)
3061                         ret = iwl_remove_default_wep_key(priv, key);
3062                 else
3063                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3064
3065                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3066                 break;
3067         default:
3068                 ret = -EINVAL;
3069         }
3070
3071         IWL_DEBUG_MAC80211("leave\n");
3072
3073         return ret;
3074 }
3075
3076 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3077                            const struct ieee80211_tx_queue_params *params)
3078 {
3079         struct iwl_priv *priv = hw->priv;
3080         unsigned long flags;
3081         int q;
3082
3083         IWL_DEBUG_MAC80211("enter\n");
3084
3085         if (!iwl_is_ready_rf(priv)) {
3086                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3087                 return -EIO;
3088         }
3089
3090         if (queue >= AC_NUM) {
3091                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3092                 return 0;
3093         }
3094
3095         if (!priv->qos_data.qos_enable) {
3096                 priv->qos_data.qos_active = 0;
3097                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3098                 return 0;
3099         }
3100         q = AC_NUM - 1 - queue;
3101
3102         spin_lock_irqsave(&priv->lock, flags);
3103
3104         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3105         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3106         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3107         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3108                         cpu_to_le16((params->txop * 32));
3109
3110         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3111         priv->qos_data.qos_active = 1;
3112
3113         if (priv->iw_mode == NL80211_IFTYPE_AP)
3114                 iwl_activate_qos(priv, 1);
3115         else if (priv->assoc_id && iwl_is_associated(priv))
3116                 iwl_activate_qos(priv, 0);
3117
3118         spin_unlock_irqrestore(&priv->lock, flags);
3119
3120         IWL_DEBUG_MAC80211("leave\n");
3121         return 0;
3122 }
3123
3124 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3125                              enum ieee80211_ampdu_mlme_action action,
3126                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3127 {
3128         struct iwl_priv *priv = hw->priv;
3129
3130         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3131                      sta->addr, tid);
3132
3133         if (!(priv->cfg->sku & IWL_SKU_N))
3134                 return -EACCES;
3135
3136         switch (action) {
3137         case IEEE80211_AMPDU_RX_START:
3138                 IWL_DEBUG_HT("start Rx\n");
3139                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3140         case IEEE80211_AMPDU_RX_STOP:
3141                 IWL_DEBUG_HT("stop Rx\n");
3142                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3143         case IEEE80211_AMPDU_TX_START:
3144                 IWL_DEBUG_HT("start Tx\n");
3145                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3146         case IEEE80211_AMPDU_TX_STOP:
3147                 IWL_DEBUG_HT("stop Tx\n");
3148                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3149         default:
3150                 IWL_DEBUG_HT("unknown\n");
3151                 return -EINVAL;
3152                 break;
3153         }
3154         return 0;
3155 }
3156
3157 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3158                                 struct ieee80211_tx_queue_stats *stats)
3159 {
3160         struct iwl_priv *priv = hw->priv;
3161         int i, avail;
3162         struct iwl_tx_queue *txq;
3163         struct iwl_queue *q;
3164         unsigned long flags;
3165
3166         IWL_DEBUG_MAC80211("enter\n");
3167
3168         if (!iwl_is_ready_rf(priv)) {
3169                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3170                 return -EIO;
3171         }
3172
3173         spin_lock_irqsave(&priv->lock, flags);
3174
3175         for (i = 0; i < AC_NUM; i++) {
3176                 txq = &priv->txq[i];
3177                 q = &txq->q;
3178                 avail = iwl_queue_space(q);
3179
3180                 stats[i].len = q->n_window - avail;
3181                 stats[i].limit = q->n_window - q->high_mark;
3182                 stats[i].count = q->n_window;
3183
3184         }
3185         spin_unlock_irqrestore(&priv->lock, flags);
3186
3187         IWL_DEBUG_MAC80211("leave\n");
3188
3189         return 0;
3190 }
3191
3192 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3193                              struct ieee80211_low_level_stats *stats)
3194 {
3195         struct iwl_priv *priv = hw->priv;
3196
3197         priv = hw->priv;
3198         IWL_DEBUG_MAC80211("enter\n");
3199         IWL_DEBUG_MAC80211("leave\n");
3200
3201         return 0;
3202 }
3203
3204 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3205 {
3206         struct iwl_priv *priv = hw->priv;
3207         unsigned long flags;
3208
3209         mutex_lock(&priv->mutex);
3210         IWL_DEBUG_MAC80211("enter\n");
3211
3212         spin_lock_irqsave(&priv->lock, flags);
3213         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3214         spin_unlock_irqrestore(&priv->lock, flags);
3215
3216         iwl_reset_qos(priv);
3217
3218         spin_lock_irqsave(&priv->lock, flags);
3219         priv->assoc_id = 0;
3220         priv->assoc_capability = 0;
3221         priv->assoc_station_added = 0;
3222
3223         /* new association get rid of ibss beacon skb */
3224         if (priv->ibss_beacon)
3225                 dev_kfree_skb(priv->ibss_beacon);
3226
3227         priv->ibss_beacon = NULL;
3228
3229         priv->beacon_int = priv->hw->conf.beacon_int;
3230         priv->timestamp = 0;
3231         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3232                 priv->beacon_int = 0;
3233
3234         spin_unlock_irqrestore(&priv->lock, flags);
3235
3236         if (!iwl_is_ready_rf(priv)) {
3237                 IWL_DEBUG_MAC80211("leave - not ready\n");
3238                 mutex_unlock(&priv->mutex);
3239                 return;
3240         }
3241
3242         /* we are restarting association process
3243          * clear RXON_FILTER_ASSOC_MSK bit
3244          */
3245         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3246                 iwl_scan_cancel_timeout(priv, 100);
3247                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3248                 iwl_commit_rxon(priv);
3249         }
3250
3251         iwl_power_update_mode(priv, 0);
3252
3253         /* Per mac80211.h: This is only used in IBSS mode... */
3254         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3255
3256                 /* switch to CAM during association period.
3257                  * the ucode will block any association/authentication
3258                  * frome during assiciation period if it can not hear
3259                  * the AP because of PM. the timer enable PM back is
3260                  * association do not complete
3261                  */
3262                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3263                                                      IEEE80211_CHAN_RADAR))
3264                                 iwl_power_disable_management(priv, 3000);
3265
3266                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3267                 mutex_unlock(&priv->mutex);
3268                 return;
3269         }
3270
3271         iwl_set_rate(priv);
3272
3273         mutex_unlock(&priv->mutex);
3274
3275         IWL_DEBUG_MAC80211("leave\n");
3276 }
3277
3278 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3279 {
3280         struct iwl_priv *priv = hw->priv;
3281         unsigned long flags;
3282         __le64 timestamp;
3283
3284         IWL_DEBUG_MAC80211("enter\n");
3285
3286         if (!iwl_is_ready_rf(priv)) {
3287                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3288                 return -EIO;
3289         }
3290
3291         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3292                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3293                 return -EIO;
3294         }
3295
3296         spin_lock_irqsave(&priv->lock, flags);
3297
3298         if (priv->ibss_beacon)
3299                 dev_kfree_skb(priv->ibss_beacon);
3300
3301         priv->ibss_beacon = skb;
3302
3303         priv->assoc_id = 0;
3304         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3305         priv->timestamp = le64_to_cpu(timestamp);
3306
3307         IWL_DEBUG_MAC80211("leave\n");
3308         spin_unlock_irqrestore(&priv->lock, flags);
3309
3310         iwl_reset_qos(priv);
3311
3312         iwl_post_associate(priv);
3313
3314
3315         return 0;
3316 }
3317
3318 /*****************************************************************************
3319  *
3320  * sysfs attributes
3321  *
3322  *****************************************************************************/
3323
3324 #ifdef CONFIG_IWLWIFI_DEBUG
3325
3326 /*
3327  * The following adds a new attribute to the sysfs representation
3328  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3329  * used for controlling the debug level.
3330  *
3331  * See the level definitions in iwl for details.
3332  */
3333
3334 static ssize_t show_debug_level(struct device *d,
3335                                 struct device_attribute *attr, char *buf)
3336 {
3337         struct iwl_priv *priv = d->driver_data;
3338
3339         return sprintf(buf, "0x%08X\n", priv->debug_level);
3340 }
3341 static ssize_t store_debug_level(struct device *d,
3342                                 struct device_attribute *attr,
3343                                  const char *buf, size_t count)
3344 {
3345         struct iwl_priv *priv = d->driver_data;
3346         unsigned long val;
3347         int ret;
3348
3349         ret = strict_strtoul(buf, 0, &val);
3350         if (ret)
3351                 printk(KERN_INFO DRV_NAME
3352                        ": %s is not in hex or decimal form.\n", buf);
3353         else
3354                 priv->debug_level = val;
3355
3356         return strnlen(buf, count);
3357 }
3358
3359 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3360                         show_debug_level, store_debug_level);
3361
3362
3363 #endif /* CONFIG_IWLWIFI_DEBUG */
3364
3365
3366 static ssize_t show_version(struct device *d,
3367                                 struct device_attribute *attr, char *buf)
3368 {
3369         struct iwl_priv *priv = d->driver_data;
3370         struct iwl_alive_resp *palive = &priv->card_alive;
3371         ssize_t pos = 0;
3372         u16 eeprom_ver;
3373
3374         if (palive->is_valid)
3375                 pos += sprintf(buf + pos,
3376                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3377                                 "fw type: 0x%01X 0x%01X\n",
3378                                 palive->ucode_major, palive->ucode_minor,
3379                                 palive->sw_rev[0], palive->sw_rev[1],
3380                                 palive->ver_type, palive->ver_subtype);
3381         else
3382                 pos += sprintf(buf + pos, "fw not loaded\n");
3383
3384         if (priv->eeprom) {
3385                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3386                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3387                                  eeprom_ver);
3388         } else {
3389                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3390         }
3391
3392         return pos;
3393 }
3394
3395 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3396
3397 static ssize_t show_temperature(struct device *d,
3398                                 struct device_attribute *attr, char *buf)
3399 {
3400         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3401
3402         if (!iwl_is_alive(priv))
3403                 return -EAGAIN;
3404
3405         return sprintf(buf, "%d\n", priv->temperature);
3406 }
3407
3408 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3409
3410 static ssize_t show_tx_power(struct device *d,
3411                              struct device_attribute *attr, char *buf)
3412 {
3413         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3414         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3415 }
3416
3417 static ssize_t store_tx_power(struct device *d,
3418                               struct device_attribute *attr,
3419                               const char *buf, size_t count)
3420 {
3421         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3422         unsigned long val;
3423         int ret;
3424
3425         ret = strict_strtoul(buf, 10, &val);
3426         if (ret)
3427                 printk(KERN_INFO DRV_NAME
3428                        ": %s is not in decimal form.\n", buf);
3429         else
3430                 iwl_set_tx_power(priv, val, false);
3431
3432         return count;
3433 }
3434
3435 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3436
3437 static ssize_t show_flags(struct device *d,
3438                           struct device_attribute *attr, char *buf)
3439 {
3440         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3441
3442         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3443 }
3444
3445 static ssize_t store_flags(struct device *d,
3446                            struct device_attribute *attr,
3447                            const char *buf, size_t count)
3448 {
3449         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3450         unsigned long val;
3451         u32 flags;
3452         int ret = strict_strtoul(buf, 0, &val);
3453         if (ret)
3454                 return ret;
3455         flags = (u32)val;
3456
3457         mutex_lock(&priv->mutex);
3458         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3459                 /* Cancel any currently running scans... */
3460                 if (iwl_scan_cancel_timeout(priv, 100))
3461                         IWL_WARNING("Could not cancel scan.\n");
3462                 else {
3463                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3464                         priv->staging_rxon.flags = cpu_to_le32(flags);
3465                         iwl_commit_rxon(priv);
3466                 }
3467         }
3468         mutex_unlock(&priv->mutex);
3469
3470         return count;
3471 }
3472
3473 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3474
3475 static ssize_t show_filter_flags(struct device *d,
3476                                  struct device_attribute *attr, char *buf)
3477 {
3478         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3479
3480         return sprintf(buf, "0x%04X\n",
3481                 le32_to_cpu(priv->active_rxon.filter_flags));
3482 }
3483
3484 static ssize_t store_filter_flags(struct device *d,
3485                                   struct device_attribute *attr,
3486                                   const char *buf, size_t count)
3487 {
3488         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3489         unsigned long val;
3490         u32 filter_flags;
3491         int ret = strict_strtoul(buf, 0, &val);
3492         if (ret)
3493                 return ret;
3494         filter_flags = (u32)val;
3495
3496         mutex_lock(&priv->mutex);
3497         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3498                 /* Cancel any currently running scans... */
3499                 if (iwl_scan_cancel_timeout(priv, 100))
3500                         IWL_WARNING("Could not cancel scan.\n");
3501                 else {
3502                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3503                                        "0x%04X\n", filter_flags);
3504                         priv->staging_rxon.filter_flags =
3505                                 cpu_to_le32(filter_flags);
3506                         iwl_commit_rxon(priv);
3507                 }
3508         }
3509         mutex_unlock(&priv->mutex);
3510
3511         return count;
3512 }
3513
3514 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3515                    store_filter_flags);
3516
3517 static ssize_t store_retry_rate(struct device *d,
3518                                 struct device_attribute *attr,
3519                                 const char *buf, size_t count)
3520 {
3521         struct iwl_priv *priv = dev_get_drvdata(d);
3522         long val;
3523         int ret  = strict_strtol(buf, 10, &val);
3524         if (!ret)
3525                 return ret;
3526
3527         priv->retry_rate = (val > 0) ? val : 1;
3528
3529         return count;
3530 }
3531
3532 static ssize_t show_retry_rate(struct device *d,
3533                                struct device_attribute *attr, char *buf)
3534 {
3535         struct iwl_priv *priv = dev_get_drvdata(d);
3536         return sprintf(buf, "%d", priv->retry_rate);
3537 }
3538
3539 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3540                    store_retry_rate);
3541
3542 static ssize_t store_power_level(struct device *d,
3543                                  struct device_attribute *attr,
3544                                  const char *buf, size_t count)
3545 {
3546         struct iwl_priv *priv = dev_get_drvdata(d);
3547         int ret;
3548         unsigned long mode;
3549
3550
3551         mutex_lock(&priv->mutex);
3552
3553         if (!iwl_is_ready(priv)) {
3554                 ret = -EAGAIN;
3555                 goto out;
3556         }
3557
3558         ret = strict_strtoul(buf, 10, &mode);
3559         if (ret)
3560                 goto out;
3561
3562         ret = iwl_power_set_user_mode(priv, mode);
3563         if (ret) {
3564                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3565                 goto out;
3566         }
3567         ret = count;
3568
3569  out:
3570         mutex_unlock(&priv->mutex);
3571         return ret;
3572 }
3573
3574 static ssize_t show_power_level(struct device *d,
3575                                 struct device_attribute *attr, char *buf)
3576 {
3577         struct iwl_priv *priv = dev_get_drvdata(d);
3578         int mode = priv->power_data.user_power_setting;
3579         int system = priv->power_data.system_power_setting;
3580         int level = priv->power_data.power_mode;
3581         char *p = buf;
3582
3583         switch (system) {
3584         case IWL_POWER_SYS_AUTO:
3585                 p += sprintf(p, "SYSTEM:auto");
3586                 break;
3587         case IWL_POWER_SYS_AC:
3588                 p += sprintf(p, "SYSTEM:ac");
3589                 break;
3590         case IWL_POWER_SYS_BATTERY:
3591                 p += sprintf(p, "SYSTEM:battery");
3592                 break;
3593         }
3594
3595         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3596                         "fixed" : "auto");
3597         p += sprintf(p, "\tINDEX:%d", level);
3598         p += sprintf(p, "\n");
3599         return p - buf + 1;
3600 }
3601
3602 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3603                    store_power_level);
3604
3605 static ssize_t show_channels(struct device *d,
3606                              struct device_attribute *attr, char *buf)
3607 {
3608
3609         struct iwl_priv *priv = dev_get_drvdata(d);
3610         struct ieee80211_channel *channels = NULL;
3611         const struct ieee80211_supported_band *supp_band = NULL;
3612         int len = 0, i;
3613         int count = 0;
3614
3615         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3616                 return -EAGAIN;
3617
3618         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3619         channels = supp_band->channels;
3620         count = supp_band->n_channels;
3621
3622         len += sprintf(&buf[len],
3623                         "Displaying %d channels in 2.4GHz band "
3624                         "(802.11bg):\n", count);
3625
3626         for (i = 0; i < count; i++)
3627                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3628                                 ieee80211_frequency_to_channel(
3629                                 channels[i].center_freq),
3630                                 channels[i].max_power,
3631                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3632                                 " (IEEE 802.11h required)" : "",
3633                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3634                                 || (channels[i].flags &
3635                                 IEEE80211_CHAN_RADAR)) ? "" :
3636                                 ", IBSS",
3637                                 channels[i].flags &
3638                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3639                                 "passive only" : "active/passive");
3640
3641         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3642         channels = supp_band->channels;
3643         count = supp_band->n_channels;
3644
3645         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3646                         "(802.11a):\n", count);
3647
3648         for (i = 0; i < count; i++)
3649                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3650                                 ieee80211_frequency_to_channel(
3651                                 channels[i].center_freq),
3652                                 channels[i].max_power,
3653                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3654                                 " (IEEE 802.11h required)" : "",
3655                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3656                                 || (channels[i].flags &
3657                                 IEEE80211_CHAN_RADAR)) ? "" :
3658                                 ", IBSS",
3659                                 channels[i].flags &
3660                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3661                                 "passive only" : "active/passive");
3662
3663         return len;
3664 }
3665
3666 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3667
3668 static ssize_t show_statistics(struct device *d,
3669                                struct device_attribute *attr, char *buf)
3670 {
3671         struct iwl_priv *priv = dev_get_drvdata(d);
3672         u32 size = sizeof(struct iwl_notif_statistics);
3673         u32 len = 0, ofs = 0;
3674         u8 *data = (u8 *)&priv->statistics;
3675         int rc = 0;
3676
3677         if (!iwl_is_alive(priv))
3678                 return -EAGAIN;
3679
3680         mutex_lock(&priv->mutex);
3681         rc = iwl_send_statistics_request(priv, 0);
3682         mutex_unlock(&priv->mutex);
3683
3684         if (rc) {
3685                 len = sprintf(buf,
3686                               "Error sending statistics request: 0x%08X\n", rc);
3687                 return len;
3688         }
3689
3690         while (size && (PAGE_SIZE - len)) {
3691                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3692                                    PAGE_SIZE - len, 1);
3693                 len = strlen(buf);
3694                 if (PAGE_SIZE - len)
3695                         buf[len++] = '\n';
3696
3697                 ofs += 16;
3698                 size -= min(size, 16U);
3699         }
3700
3701         return len;
3702 }
3703
3704 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3705
3706 static ssize_t show_status(struct device *d,
3707                            struct device_attribute *attr, char *buf)
3708 {
3709         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3710         if (!iwl_is_alive(priv))
3711                 return -EAGAIN;
3712         return sprintf(buf, "0x%08x\n", (int)priv->status);
3713 }
3714
3715 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3716
3717 /*****************************************************************************
3718  *
3719  * driver setup and teardown
3720  *
3721  *****************************************************************************/
3722
3723 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3724 {
3725         priv->workqueue = create_workqueue(DRV_NAME);
3726
3727         init_waitqueue_head(&priv->wait_command_queue);
3728
3729         INIT_WORK(&priv->up, iwl_bg_up);
3730         INIT_WORK(&priv->restart, iwl_bg_restart);
3731         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3732         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3733         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3734         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3735         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3736         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3737
3738         iwl_setup_scan_deferred_work(priv);
3739         iwl_setup_power_deferred_work(priv);
3740
3741         if (priv->cfg->ops->lib->setup_deferred_work)
3742                 priv->cfg->ops->lib->setup_deferred_work(priv);
3743
3744         init_timer(&priv->statistics_periodic);
3745         priv->statistics_periodic.data = (unsigned long)priv;
3746         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3747
3748         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3749                      iwl_irq_tasklet, (unsigned long)priv);
3750 }
3751
3752 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3753 {
3754         if (priv->cfg->ops->lib->cancel_deferred_work)
3755                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3756
3757         cancel_delayed_work_sync(&priv->init_alive_start);
3758         cancel_delayed_work(&priv->scan_check);
3759         cancel_delayed_work_sync(&priv->set_power_save);
3760         cancel_delayed_work(&priv->alive_start);
3761         cancel_work_sync(&priv->beacon_update);
3762         del_timer_sync(&priv->statistics_periodic);
3763 }
3764
3765 static struct attribute *iwl_sysfs_entries[] = {
3766         &dev_attr_channels.attr,
3767         &dev_attr_flags.attr,
3768         &dev_attr_filter_flags.attr,
3769         &dev_attr_power_level.attr,
3770         &dev_attr_retry_rate.attr,
3771         &dev_attr_statistics.attr,
3772         &dev_attr_status.attr,
3773         &dev_attr_temperature.attr,
3774         &dev_attr_tx_power.attr,
3775 #ifdef CONFIG_IWLWIFI_DEBUG
3776         &dev_attr_debug_level.attr,
3777 #endif
3778         &dev_attr_version.attr,
3779
3780         NULL
3781 };
3782
3783 static struct attribute_group iwl_attribute_group = {
3784         .name = NULL,           /* put in device directory */
3785         .attrs = iwl_sysfs_entries,
3786 };
3787
3788 static struct ieee80211_ops iwl_hw_ops = {
3789         .tx = iwl_mac_tx,
3790         .start = iwl_mac_start,
3791         .stop = iwl_mac_stop,
3792         .add_interface = iwl_mac_add_interface,
3793         .remove_interface = iwl_mac_remove_interface,
3794         .config = iwl_mac_config,
3795         .config_interface = iwl_mac_config_interface,
3796         .configure_filter = iwl_configure_filter,
3797         .set_key = iwl_mac_set_key,
3798         .update_tkip_key = iwl_mac_update_tkip_key,
3799         .get_stats = iwl_mac_get_stats,
3800         .get_tx_stats = iwl_mac_get_tx_stats,
3801         .conf_tx = iwl_mac_conf_tx,
3802         .reset_tsf = iwl_mac_reset_tsf,
3803         .bss_info_changed = iwl_bss_info_changed,
3804         .ampdu_action = iwl_mac_ampdu_action,
3805         .hw_scan = iwl_mac_hw_scan
3806 };
3807
3808 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3809 {
3810         int err = 0;
3811         struct iwl_priv *priv;
3812         struct ieee80211_hw *hw;
3813         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3814         unsigned long flags;
3815
3816         /************************
3817          * 1. Allocating HW data
3818          ************************/
3819
3820         /* Disabling hardware scan means that mac80211 will perform scans
3821          * "the hard way", rather than using device's scan. */
3822         if (cfg->mod_params->disable_hw_scan) {
3823                 if (cfg->mod_params->debug & IWL_DL_INFO)
3824                         dev_printk(KERN_DEBUG, &(pdev->dev),
3825                                    "Disabling hw_scan\n");
3826                 iwl_hw_ops.hw_scan = NULL;
3827         }
3828
3829         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3830         if (!hw) {
3831                 err = -ENOMEM;
3832                 goto out;
3833         }
3834         priv = hw->priv;
3835         /* At this point both hw and priv are allocated. */
3836
3837         SET_IEEE80211_DEV(hw, &pdev->dev);
3838
3839         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3840         priv->cfg = cfg;
3841         priv->pci_dev = pdev;
3842
3843 #ifdef CONFIG_IWLWIFI_DEBUG
3844         priv->debug_level = priv->cfg->mod_params->debug;
3845         atomic_set(&priv->restrict_refcnt, 0);
3846 #endif
3847
3848         /**************************
3849          * 2. Initializing PCI bus
3850          **************************/
3851         if (pci_enable_device(pdev)) {
3852                 err = -ENODEV;
3853                 goto out_ieee80211_free_hw;
3854         }
3855
3856         pci_set_master(pdev);
3857
3858         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3859         if (!err)
3860                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3861         if (err) {
3862                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3863                 if (!err)
3864                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3865                 /* both attempts failed: */
3866                 if (err) {
3867                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3868                                 DRV_NAME);
3869                         goto out_pci_disable_device;
3870                 }
3871         }
3872
3873         err = pci_request_regions(pdev, DRV_NAME);
3874         if (err)
3875                 goto out_pci_disable_device;
3876
3877         pci_set_drvdata(pdev, priv);
3878
3879
3880         /***********************
3881          * 3. Read REV register
3882          ***********************/
3883         priv->hw_base = pci_iomap(pdev, 0, 0);
3884         if (!priv->hw_base) {
3885                 err = -ENODEV;
3886                 goto out_pci_release_regions;
3887         }
3888
3889         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3890                 (unsigned long long) pci_resource_len(pdev, 0));
3891         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3892
3893         iwl_hw_detect(priv);
3894         printk(KERN_INFO DRV_NAME
3895                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3896                 priv->cfg->name, priv->hw_rev);
3897
3898         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3899          * PCI Tx retries from interfering with C3 CPU state */
3900         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3901
3902         /* amp init */
3903         err = priv->cfg->ops->lib->apm_ops.init(priv);
3904         if (err < 0) {
3905                 IWL_DEBUG_INFO("Failed to init APMG\n");
3906                 goto out_iounmap;
3907         }
3908         /*****************
3909          * 4. Read EEPROM
3910          *****************/
3911         /* Read the EEPROM */
3912         err = iwl_eeprom_init(priv);
3913         if (err) {
3914                 IWL_ERROR("Unable to init EEPROM\n");
3915                 goto out_iounmap;
3916         }
3917         err = iwl_eeprom_check_version(priv);
3918         if (err)
3919                 goto out_iounmap;
3920
3921         /* extract MAC Address */
3922         iwl_eeprom_get_mac(priv, priv->mac_addr);
3923         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3924         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3925
3926         /************************
3927          * 5. Setup HW constants
3928          ************************/
3929         if (iwl_set_hw_params(priv)) {
3930                 IWL_ERROR("failed to set hw parameters\n");
3931                 goto out_free_eeprom;
3932         }
3933
3934         /*******************
3935          * 6. Setup priv
3936          *******************/
3937
3938         err = iwl_init_drv(priv);
3939         if (err)
3940                 goto out_free_eeprom;
3941         /* At this point both hw and priv are initialized. */
3942
3943         /**********************************
3944          * 7. Initialize module parameters
3945          **********************************/
3946
3947         /* Disable radio (SW RF KILL) via parameter when loading driver */
3948         if (priv->cfg->mod_params->disable) {
3949                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3950                 IWL_DEBUG_INFO("Radio disabled.\n");
3951         }
3952
3953         /********************
3954          * 8. Setup services
3955          ********************/
3956         spin_lock_irqsave(&priv->lock, flags);
3957         iwl_disable_interrupts(priv);
3958         spin_unlock_irqrestore(&priv->lock, flags);
3959
3960         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3961         if (err) {
3962                 IWL_ERROR("failed to create sysfs device attributes\n");
3963                 goto out_uninit_drv;
3964         }
3965
3966
3967         iwl_setup_deferred_work(priv);
3968         iwl_setup_rx_handlers(priv);
3969
3970         /********************
3971          * 9. Conclude
3972          ********************/
3973         pci_save_state(pdev);
3974         pci_disable_device(pdev);
3975
3976         /**********************************
3977          * 10. Setup and register mac80211
3978          **********************************/
3979
3980         err = iwl_setup_mac(priv);
3981         if (err)
3982                 goto out_remove_sysfs;
3983
3984         err = iwl_dbgfs_register(priv, DRV_NAME);
3985         if (err)
3986                 IWL_ERROR("failed to create debugfs files\n");
3987
3988         err = iwl_rfkill_init(priv);
3989         if (err)
3990                 IWL_ERROR("Unable to initialize RFKILL system. "
3991                                   "Ignoring error: %d\n", err);
3992         iwl_power_initialize(priv);
3993         return 0;
3994
3995  out_remove_sysfs:
3996         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3997  out_uninit_drv:
3998         iwl_uninit_drv(priv);
3999  out_free_eeprom:
4000         iwl_eeprom_free(priv);
4001  out_iounmap:
4002         pci_iounmap(pdev, priv->hw_base);
4003  out_pci_release_regions:
4004         pci_release_regions(pdev);
4005         pci_set_drvdata(pdev, NULL);
4006  out_pci_disable_device:
4007         pci_disable_device(pdev);
4008  out_ieee80211_free_hw:
4009         ieee80211_free_hw(priv->hw);
4010  out:
4011         return err;
4012 }
4013
4014 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4015 {
4016         struct iwl_priv *priv = pci_get_drvdata(pdev);
4017         unsigned long flags;
4018
4019         if (!priv)
4020                 return;
4021
4022         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4023
4024         iwl_dbgfs_unregister(priv);
4025         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4026
4027         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4028          * to be called and iwl_down since we are removing the device
4029          * we need to set STATUS_EXIT_PENDING bit.
4030          */
4031         set_bit(STATUS_EXIT_PENDING, &priv->status);
4032         if (priv->mac80211_registered) {
4033                 ieee80211_unregister_hw(priv->hw);
4034                 priv->mac80211_registered = 0;
4035         } else {
4036                 iwl_down(priv);
4037         }
4038
4039         /* make sure we flush any pending irq or
4040          * tasklet for the driver
4041          */
4042         spin_lock_irqsave(&priv->lock, flags);
4043         iwl_disable_interrupts(priv);
4044         spin_unlock_irqrestore(&priv->lock, flags);
4045
4046         iwl_synchronize_irq(priv);
4047
4048         iwl_rfkill_unregister(priv);
4049         iwl_dealloc_ucode_pci(priv);
4050
4051         if (priv->rxq.bd)
4052                 iwl_rx_queue_free(priv, &priv->rxq);
4053         iwl_hw_txq_ctx_free(priv);
4054
4055         iwl_clear_stations_table(priv);
4056         iwl_eeprom_free(priv);
4057
4058
4059         /*netif_stop_queue(dev); */
4060         flush_workqueue(priv->workqueue);
4061
4062         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4063          * priv->workqueue... so we can't take down the workqueue
4064          * until now... */
4065         destroy_workqueue(priv->workqueue);
4066         priv->workqueue = NULL;
4067
4068         pci_iounmap(pdev, priv->hw_base);
4069         pci_release_regions(pdev);
4070         pci_disable_device(pdev);
4071         pci_set_drvdata(pdev, NULL);
4072
4073         iwl_uninit_drv(priv);
4074
4075         if (priv->ibss_beacon)
4076                 dev_kfree_skb(priv->ibss_beacon);
4077
4078         ieee80211_free_hw(priv->hw);
4079 }
4080
4081 #ifdef CONFIG_PM
4082
4083 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4084 {
4085         struct iwl_priv *priv = pci_get_drvdata(pdev);
4086
4087         if (priv->is_open) {
4088                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4089                 iwl_mac_stop(priv->hw);
4090                 priv->is_open = 1;
4091         }
4092
4093         pci_set_power_state(pdev, PCI_D3hot);
4094
4095         return 0;
4096 }
4097
4098 static int iwl_pci_resume(struct pci_dev *pdev)
4099 {
4100         struct iwl_priv *priv = pci_get_drvdata(pdev);
4101
4102         pci_set_power_state(pdev, PCI_D0);
4103
4104         if (priv->is_open)
4105                 iwl_mac_start(priv->hw);
4106
4107         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4108         return 0;
4109 }
4110
4111 #endif /* CONFIG_PM */
4112
4113 /*****************************************************************************
4114  *
4115  * driver and module entry point
4116  *
4117  *****************************************************************************/
4118
4119 /* Hardware specific file defines the PCI IDs table for that hardware module */
4120 static struct pci_device_id iwl_hw_card_ids[] = {
4121 #ifdef CONFIG_IWL4965
4122         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4123         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4124 #endif /* CONFIG_IWL4965 */
4125 #ifdef CONFIG_IWL5000
4126         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4127         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4128         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4129         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4130         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4131         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4132         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4133         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4134         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4135         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4136 /* 5350 WiFi/WiMax */
4137         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4138         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4139         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4140 /* 5150 Wifi/WiMax */
4141         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4142         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4143 #endif /* CONFIG_IWL5000 */
4144
4145         {0}
4146 };
4147 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4148
4149 static struct pci_driver iwl_driver = {
4150         .name = DRV_NAME,
4151         .id_table = iwl_hw_card_ids,
4152         .probe = iwl_pci_probe,
4153         .remove = __devexit_p(iwl_pci_remove),
4154 #ifdef CONFIG_PM
4155         .suspend = iwl_pci_suspend,
4156         .resume = iwl_pci_resume,
4157 #endif
4158 };
4159
4160 static int __init iwl_init(void)
4161 {
4162
4163         int ret;
4164         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4165         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4166
4167         ret = iwlagn_rate_control_register();
4168         if (ret) {
4169                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4170                 return ret;
4171         }
4172
4173         ret = pci_register_driver(&iwl_driver);
4174         if (ret) {
4175                 IWL_ERROR("Unable to initialize PCI module\n");
4176                 goto error_register;
4177         }
4178
4179         return ret;
4180
4181 error_register:
4182         iwlagn_rate_control_unregister();
4183         return ret;
4184 }
4185
4186 static void __exit iwl_exit(void)
4187 {
4188         pci_unregister_driver(&iwl_driver);
4189         iwlagn_rate_control_unregister();
4190 }
4191
4192 module_exit(iwl_exit);
4193 module_init(iwl_init);