SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

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