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