git.oblomov.eu Git - 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                                           int left)
 375 {
 376         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 377             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 378              (priv->iw_mode != NL80211_IFTYPE_AP)))
 379                 return 0;
 380
 381         if (priv->ibss_beacon->len > left)
 382                 return 0;
 383
 384         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 385
 386         return priv->ibss_beacon->len;
 387 }
 388
 389 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 390 {
 391         int i;
 392         int rate_mask;
 393
 394         /* Set rate mask*/
 395         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 396                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 397         else
 398                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 399
 400         /* Find lowest valid rate */
 401         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 402                                         i = iwl_rates[i].next_ieee) {
 403                 if (rate_mask & (1 << i))
 404                         return iwl_rates[i].plcp;
 405         }
 406
 407         /* No valid rate was found. Assign the lowest one */
 408         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 409                 return IWL_RATE_1M_PLCP;
 410         else
 411                 return IWL_RATE_6M_PLCP;
 412 }
 413
 414 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 415                                        struct iwl_frame *frame, u8 rate)
 416 {
 417         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 418         unsigned int frame_size;
 419
 420         tx_beacon_cmd = &frame->u.beacon;
 421         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 422
 423         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 424         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 425
 426         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 427                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 428
 429         BUG_ON(frame_size > MAX_MPDU_SIZE);
 430         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 431
 432         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 433                 tx_beacon_cmd->tx.rate_n_flags =
 434                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 435         else
 436                 tx_beacon_cmd->tx.rate_n_flags =
 437                         iwl_hw_set_rate_n_flags(rate, 0);
 438
 439         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 440                                      TX_CMD_FLG_TSF_MSK |
 441                                      TX_CMD_FLG_STA_RATE_MSK;
 442
 443         return sizeof(*tx_beacon_cmd) + frame_size;
 444 }
 445 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 446 {
 447         struct iwl_frame *frame;
 448         unsigned int frame_size;
 449         int rc;
 450         u8 rate;
 451
 452         frame = iwl_get_free_frame(priv);
 453
 454         if (!frame) {
 455                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 456                           "command.\n");
 457                 return -ENOMEM;
 458         }
 459
 460         rate = iwl_rate_get_lowest_plcp(priv);
 461
 462         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 463
 464         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 465                               &frame->u.cmd[0]);
 466
 467         iwl_free_frame(priv, frame);
 468
 469         return rc;
 470 }
 471
 472 /******************************************************************************
 473  *
 474  * Misc. internal state and helper functions
 475  *
 476  ******************************************************************************/
 477
 478 static void iwl_ht_conf(struct iwl_priv *priv,
 479                             struct ieee80211_bss_conf *bss_conf)
 480 {
 481         struct ieee80211_sta_ht_cap *ht_conf;
 482         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 483         struct ieee80211_sta *sta;
 484
 485         IWL_DEBUG_MAC80211("enter: \n");
 486
 487         if (!iwl_conf->is_ht)
 488                 return;
 489
 490
 491         /*
 492          * It is totally wrong to base global information on something
 493          * that is valid only when associated, alas, this driver works
 494          * that way and I don't know how to fix it.
 495          */
 496
 497         rcu_read_lock();
 498         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 499         if (!sta) {
 500                 rcu_read_unlock();
 501                 return;
 502         }
 503         ht_conf = &sta->ht_cap;
 504
 505         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 506                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 507         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 508                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 509
 510         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 511         iwl_conf->max_amsdu_size =
 512                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 513
 514         iwl_conf->supported_chan_width =
 515                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 516
 517         /*
 518          * XXX: The HT configuration needs to be moved into iwl_mac_config()
 519          *      to be done there correctly.
 520          */
 521
 522         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 523         if (priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40MINUS)
 524                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 525         else if(priv->hw->conf.ht.channel_type == NL80211_CHAN_HT40PLUS)
 526                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 527
 528         /* If no above or below channel supplied disable FAT channel */
 529         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 530             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 531                 iwl_conf->supported_chan_width = 0;
 532
 533         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 534
 535         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 536
 537         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
 538         iwl_conf->ht_protection =
 539                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 540         iwl_conf->non_GF_STA_present =
 541                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 542
 543         rcu_read_unlock();
 544
 545         IWL_DEBUG_MAC80211("leave\n");
 546 }
 547
 548 /*
 549  * QoS  support
 550 */
 551 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 552 {
 553         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 554                 return;
 555
 556         priv->qos_data.def_qos_parm.qos_flags = 0;
 557
 558         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 559             !priv->qos_data.qos_cap.q_AP.txop_request)
 560                 priv->qos_data.def_qos_parm.qos_flags |=
 561                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 562         if (priv->qos_data.qos_active)
 563                 priv->qos_data.def_qos_parm.qos_flags |=
 564                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 565
 566         if (priv->current_ht_config.is_ht)
 567                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 568
 569         if (force || iwl_is_associated(priv)) {
 570                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 571                                 priv->qos_data.qos_active,
 572                                 priv->qos_data.def_qos_parm.qos_flags);
 573
 574                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 575                                        sizeof(struct iwl_qosparam_cmd),
 576                                        &priv->qos_data.def_qos_parm, NULL);
 577         }
 578 }
 579
 580 #define MAX_UCODE_BEACON_INTERVAL       4096
 581
 582 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 583 {
 584         u16 new_val = 0;
 585         u16 beacon_factor = 0;
 586
 587         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 588                                         / MAX_UCODE_BEACON_INTERVAL;
 589         new_val = beacon_val / beacon_factor;
 590
 591         return new_val;
 592 }
 593
 594 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 595 {
 596         u64 tsf;
 597         s32 interval_tm, rem;
 598         unsigned long flags;
 599         struct ieee80211_conf *conf = NULL;
 600         u16 beacon_int = 0;
 601
 602         conf = ieee80211_get_hw_conf(priv->hw);
 603
 604         spin_lock_irqsave(&priv->lock, flags);
 605         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 606         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 607
 608         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 609                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 610                 priv->rxon_timing.atim_window = 0;
 611         } else {
 612                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 613
 614                 /* TODO: we need to get atim_window from upper stack
 615                  * for now we set to 0 */
 616                 priv->rxon_timing.atim_window = 0;
 617         }
 618
 619         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 620
 621         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 622         interval_tm = beacon_int * 1024;
 623         rem = do_div(tsf, interval_tm);
 624         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 625
 626         spin_unlock_irqrestore(&priv->lock, flags);
 627         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 628                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 629                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 630                         le16_to_cpu(priv->rxon_timing.atim_window));
 631 }
 632
 633 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 634                                    enum ieee80211_band band)
 635 {
 636         if (band == IEEE80211_BAND_5GHZ) {
 637                 priv->staging_rxon.flags &=
 638                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 639                       | RXON_FLG_CCK_MSK);
 640                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 641         } else {
 642                 /* Copied from iwl_post_associate() */
 643                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 644                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 645                 else
 646                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 647
 648                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 649                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 650
 651                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 652                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 653                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 654         }
 655 }
 656
 657 /*
 658  * initialize rxon structure with default values from eeprom
 659  */
 660 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 661 {
 662         const struct iwl_channel_info *ch_info;
 663
 664         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 665
 666         switch (mode) {
 667         case NL80211_IFTYPE_AP:
 668                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 669                 break;
 670
 671         case NL80211_IFTYPE_STATION:
 672                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 673                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 674                 break;
 675
 676         case NL80211_IFTYPE_ADHOC:
 677                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 678                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 679                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 680                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 681                 break;
 682
 683         case NL80211_IFTYPE_MONITOR:
 684                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 685                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 686                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 687                 break;
 688         default:
 689                 IWL_ERROR("Unsupported interface type %d\n", mode);
 690                 break;
 691         }
 692
 693 #if 0
 694         /* TODO:  Figure out when short_preamble would be set and cache from
 695          * that */
 696         if (!hw_to_local(priv->hw)->short_preamble)
 697                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 698         else
 699                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 700 #endif
 701
 702         ch_info = iwl_get_channel_info(priv, priv->band,
 703                                        le16_to_cpu(priv->active_rxon.channel));
 704
 705         if (!ch_info)
 706                 ch_info = &priv->channel_info[0];
 707
 708         /*
 709          * in some case A channels are all non IBSS
 710          * in this case force B/G channel
 711          */
 712         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 713             !(is_channel_ibss(ch_info)))
 714                 ch_info = &priv->channel_info[0];
 715
 716         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 717         priv->band = ch_info->band;
 718
 719         iwl_set_flags_for_band(priv, priv->band);
 720
 721         priv->staging_rxon.ofdm_basic_rates =
 722             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 723         priv->staging_rxon.cck_basic_rates =
 724             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 725
 726         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 727                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 728         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 729         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 730         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 731         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 732         iwl_set_rxon_chain(priv);
 733 }
 734
 735 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 736 {
 737         iwl_connection_init_rx_config(priv, mode);
 738         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 739
 740         iwl_clear_stations_table(priv);
 741
 742         /* dont commit rxon if rf-kill is on*/
 743         if (!iwl_is_ready_rf(priv))
 744                 return -EAGAIN;
 745
 746         cancel_delayed_work(&priv->scan_check);
 747         if (iwl_scan_cancel_timeout(priv, 100)) {
 748                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 749                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 750                 return -EAGAIN;
 751         }
 752
 753         iwl_commit_rxon(priv);
 754
 755         return 0;
 756 }
 757
 758 static void iwl_set_rate(struct iwl_priv *priv)
 759 {
 760         const struct ieee80211_supported_band *hw = NULL;
 761         struct ieee80211_rate *rate;
 762         int i;
 763
 764         hw = iwl_get_hw_mode(priv, priv->band);
 765         if (!hw) {
 766                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 767                 return;
 768         }
 769
 770         priv->active_rate = 0;
 771         priv->active_rate_basic = 0;
 772
 773         for (i = 0; i < hw->n_bitrates; i++) {
 774                 rate = &(hw->bitrates[i]);
 775                 if (rate->hw_value < IWL_RATE_COUNT)
 776                         priv->active_rate |= (1 << rate->hw_value);
 777         }
 778
 779         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 780                        priv->active_rate, priv->active_rate_basic);
 781
 782         /*
 783          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 784          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 785          * OFDM
 786          */
 787         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 788                 priv->staging_rxon.cck_basic_rates =
 789                     ((priv->active_rate_basic &
 790                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 791         else
 792                 priv->staging_rxon.cck_basic_rates =
 793                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 796                 priv->staging_rxon.ofdm_basic_rates =
 797                     ((priv->active_rate_basic &
 798                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 799                       IWL_FIRST_OFDM_RATE) & 0xFF;
 800         else
 801                 priv->staging_rxon.ofdm_basic_rates =
 802                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 803 }
 804
 805
 806 /******************************************************************************
 807  *
 808  * Generic RX handler implementations
 809  *
 810  ******************************************************************************/
 811 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 812                                 struct iwl_rx_mem_buffer *rxb)
 813 {
 814         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 815         struct iwl_alive_resp *palive;
 816         struct delayed_work *pwork;
 817
 818         palive = &pkt->u.alive_frame;
 819
 820         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 821                        "0x%01X 0x%01X\n",
 822                        palive->is_valid, palive->ver_type,
 823                        palive->ver_subtype);
 824
 825         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 826                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 827                 memcpy(&priv->card_alive_init,
 828                        &pkt->u.alive_frame,
 829                        sizeof(struct iwl_init_alive_resp));
 830                 pwork = &priv->init_alive_start;
 831         } else {
 832                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 833                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 834                        sizeof(struct iwl_alive_resp));
 835                 pwork = &priv->alive_start;
 836         }
 837
 838         /* We delay the ALIVE response by 5ms to
 839          * give the HW RF Kill time to activate... */
 840         if (palive->is_valid == UCODE_VALID_OK)
 841                 queue_delayed_work(priv->workqueue, pwork,
 842                                    msecs_to_jiffies(5));
 843         else
 844                 IWL_WARNING("uCode did not respond OK.\n");
 845 }
 846
 847 static void iwl_rx_reply_error(struct iwl_priv *priv,
 848                                    struct iwl_rx_mem_buffer *rxb)
 849 {
 850         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 851
 852         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 853                 "seq 0x%04X ser 0x%08X\n",
 854                 le32_to_cpu(pkt->u.err_resp.error_type),
 855                 get_cmd_string(pkt->u.err_resp.cmd_id),
 856                 pkt->u.err_resp.cmd_id,
 857                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 858                 le32_to_cpu(pkt->u.err_resp.error_info));
 859 }
 860
 861 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 862
 863 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 864 {
 865         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 866         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 867         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
 868         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 869                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 870         rxon->channel = csa->channel;
 871         priv->staging_rxon.channel = csa->channel;
 872 }
 873
 874 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 875                                       struct iwl_rx_mem_buffer *rxb)
 876 {
 877 #ifdef CONFIG_IWLWIFI_DEBUG
 878         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 879         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
 880         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 881                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 882 #endif
 883 }
 884
 885 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 886                                              struct iwl_rx_mem_buffer *rxb)
 887 {
 888         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 889         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 890                         "notification for %s:\n",
 891                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 892         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 893 }
 894
 895 static void iwl_bg_beacon_update(struct work_struct *work)
 896 {
 897         struct iwl_priv *priv =
 898                 container_of(work, struct iwl_priv, beacon_update);
 899         struct sk_buff *beacon;
 900
 901         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 902         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 903
 904         if (!beacon) {
 905                 IWL_ERROR("update beacon failed\n");
 906                 return;
 907         }
 908
 909         mutex_lock(&priv->mutex);
 910         /* new beacon skb is allocated every time; dispose previous.*/
 911         if (priv->ibss_beacon)
 912                 dev_kfree_skb(priv->ibss_beacon);
 913
 914         priv->ibss_beacon = beacon;
 915         mutex_unlock(&priv->mutex);
 916
 917         iwl_send_beacon_cmd(priv);
 918 }
 919
 920 /**
 921  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 922  *
 923  * This callback is provided in order to send a statistics request.
 924  *
 925  * This timer function is continually reset to execute within
 926  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 927  * was received.  We need to ensure we receive the statistics in order
 928  * to update the temperature used for calibrating the TXPOWER.
 929  */
 930 static void iwl_bg_statistics_periodic(unsigned long data)
 931 {
 932         struct iwl_priv *priv = (struct iwl_priv *)data;
 933
 934         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 935                 return;
 936
 937         /* dont send host command if rf-kill is on */
 938         if (!iwl_is_ready_rf(priv))
 939                 return;
 940
 941         iwl_send_statistics_request(priv, CMD_ASYNC);
 942 }
 943
 944 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 945                                 struct iwl_rx_mem_buffer *rxb)
 946 {
 947 #ifdef CONFIG_IWLWIFI_DEBUG
 948         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 949         struct iwl4965_beacon_notif *beacon =
 950                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 951         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 952
 953         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 954                 "tsf %d %d rate %d\n",
 955                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 956                 beacon->beacon_notify_hdr.failure_frame,
 957                 le32_to_cpu(beacon->ibss_mgr_status),
 958                 le32_to_cpu(beacon->high_tsf),
 959                 le32_to_cpu(beacon->low_tsf), rate);
 960 #endif
 961
 962         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 963             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 964                 queue_work(priv->workqueue, &priv->beacon_update);
 965 }
 966
 967 /* Handle notification from uCode that card's power state is changing
 968  * due to software, hardware, or critical temperature RFKILL */
 969 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 970                                     struct iwl_rx_mem_buffer *rxb)
 971 {
 972         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 973         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 974         unsigned long status = priv->status;
 975
 976         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 977                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 978                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 979
 980         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 981                      RF_CARD_DISABLED)) {
 982
 983                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 984                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 985
 986                 if (!iwl_grab_nic_access(priv)) {
 987                         iwl_write_direct32(
 988                                 priv, HBUS_TARG_MBX_C,
 989                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 990
 991                         iwl_release_nic_access(priv);
 992                 }
 993
 994                 if (!(flags & RXON_CARD_DISABLED)) {
 995                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 996                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 997                         if (!iwl_grab_nic_access(priv)) {
 998                                 iwl_write_direct32(
 999                                         priv, HBUS_TARG_MBX_C,
1000                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1001
1002                                 iwl_release_nic_access(priv);
1003                         }
1004                 }
1005
1006                 if (flags & RF_CARD_DISABLED) {
1007                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1008                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1009                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1010                         if (!iwl_grab_nic_access(priv))
1011                                 iwl_release_nic_access(priv);
1012                 }
1013         }
1014
1015         if (flags & HW_CARD_DISABLED)
1016                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1017         else
1018                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1019
1020
1021         if (flags & SW_CARD_DISABLED)
1022                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1023         else
1024                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1025
1026         if (!(flags & RXON_CARD_DISABLED))
1027                 iwl_scan_cancel(priv);
1028
1029         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1030              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1031             (test_bit(STATUS_RF_KILL_SW, &status) !=
1032              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1033                 queue_work(priv->workqueue, &priv->rf_kill);
1034         else
1035                 wake_up_interruptible(&priv->wait_command_queue);
1036 }
1037
1038 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1039 {
1040         int ret;
1041         unsigned long flags;
1042
1043         spin_lock_irqsave(&priv->lock, flags);
1044         ret = iwl_grab_nic_access(priv);
1045         if (ret)
1046                 goto err;
1047
1048         if (src == IWL_PWR_SRC_VAUX) {
1049                 u32 val;
1050                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1051                                             &val);
1052
1053                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1054                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1055                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1056                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1057         } else {
1058                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1059                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1060                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1061         }
1062
1063         iwl_release_nic_access(priv);
1064 err:
1065         spin_unlock_irqrestore(&priv->lock, flags);
1066         return ret;
1067 }
1068
1069 /**
1070  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1071  *
1072  * Setup the RX handlers for each of the reply types sent from the uCode
1073  * to the host.
1074  *
1075  * This function chains into the hardware specific files for them to setup
1076  * any hardware specific handlers as well.
1077  */
1078 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1079 {
1080         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1081         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1082         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1083         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1084         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1085             iwl_rx_pm_debug_statistics_notif;
1086         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1087
1088         /*
1089          * The same handler is used for both the REPLY to a discrete
1090          * statistics request from the host as well as for the periodic
1091          * statistics notifications (after received beacons) from the uCode.
1092          */
1093         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1094         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1095
1096         iwl_setup_spectrum_handlers(priv);
1097         iwl_setup_rx_scan_handlers(priv);
1098
1099         /* status change handler */
1100         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1101
1102         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1103             iwl_rx_missed_beacon_notif;
1104         /* Rx handlers */
1105         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1106         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1107         /* block ack */
1108         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1109         /* Set up hardware specific Rx handlers */
1110         priv->cfg->ops->lib->rx_handler_setup(priv);
1111 }
1112
1113 /**
1114  * iwl_rx_handle - Main entry function for receiving responses from uCode
1115  *
1116  * Uses the priv->rx_handlers callback function array to invoke
1117  * the appropriate handlers, including command responses,
1118  * frame-received notifications, and other notifications.
1119  */
1120 void iwl_rx_handle(struct iwl_priv *priv)
1121 {
1122         struct iwl_rx_mem_buffer *rxb;
1123         struct iwl_rx_packet *pkt;
1124         struct iwl_rx_queue *rxq = &priv->rxq;
1125         u32 r, i;
1126         int reclaim;
1127         unsigned long flags;
1128         u8 fill_rx = 0;
1129         u32 count = 8;
1130
1131         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1132          * buffer that the driver may process (last buffer filled by ucode). */
1133         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1134         i = rxq->read;
1135
1136         /* Rx interrupt, but nothing sent from uCode */
1137         if (i == r)
1138                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1139
1140         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1141                 fill_rx = 1;
1142
1143         while (i != r) {
1144                 rxb = rxq->queue[i];
1145
1146                 /* If an RXB doesn't have a Rx queue slot associated with it,
1147                  * then a bug has been introduced in the queue refilling
1148                  * routines -- catch it here */
1149                 BUG_ON(rxb == NULL);
1150
1151                 rxq->queue[i] = NULL;
1152
1153                 dma_sync_single_range_for_cpu(
1154                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1155                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1156                                 priv->hw_params.rx_buf_size,
1157                                 PCI_DMA_FROMDEVICE);
1158                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1159
1160                 /* Reclaim a command buffer only if this packet is a response
1161                  *   to a (driver-originated) command.
1162                  * If the packet (e.g. Rx frame) originated from uCode,
1163                  *   there is no command buffer to reclaim.
1164                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1165                  *   but apparently a few don't get set; catch them here. */
1166                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1167                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1168                         (pkt->hdr.cmd != REPLY_RX) &&
1169                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1170                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1171                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1172                         (pkt->hdr.cmd != REPLY_TX);
1173
1174                 /* Based on type of command response or notification,
1175                  *   handle those that need handling via function in
1176                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1177                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1178                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1179                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1180                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1181                 } else {
1182                         /* No handling needed */
1183                         IWL_DEBUG(IWL_DL_RX,
1184                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1185                                 r, i, get_cmd_string(pkt->hdr.cmd),
1186                                 pkt->hdr.cmd);
1187                 }
1188
1189                 if (reclaim) {
1190                         /* Invoke any callbacks, transfer the skb to caller, and
1191                          * fire off the (possibly) blocking iwl_send_cmd()
1192                          * as we reclaim the driver command queue */
1193                         if (rxb && rxb->skb)
1194                                 iwl_tx_cmd_complete(priv, rxb);
1195                         else
1196                                 IWL_WARNING("Claim null rxb?\n");
1197                 }
1198
1199                 /* For now we just don't re-use anything.  We can tweak this
1200                  * later to try and re-use notification packets and SKBs that
1201                  * fail to Rx correctly */
1202                 if (rxb->skb != NULL) {
1203                         priv->alloc_rxb_skb--;
1204                         dev_kfree_skb_any(rxb->skb);
1205                         rxb->skb = NULL;
1206                 }
1207
1208                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1209                                  priv->hw_params.rx_buf_size + 256,
1210                                  PCI_DMA_FROMDEVICE);
1211                 spin_lock_irqsave(&rxq->lock, flags);
1212                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1213                 spin_unlock_irqrestore(&rxq->lock, flags);
1214                 i = (i + 1) & RX_QUEUE_MASK;
1215                 /* If there are a lot of unused frames,
1216                  * restock the Rx queue so ucode wont assert. */
1217                 if (fill_rx) {
1218                         count++;
1219                         if (count >= 8) {
1220                                 priv->rxq.read = i;
1221                                 iwl_rx_queue_restock(priv);
1222                                 count = 0;
1223                         }
1224                 }
1225         }
1226
1227         /* Backtrack one entry */
1228         priv->rxq.read = i;
1229         iwl_rx_queue_restock(priv);
1230 }
1231
1232 #ifdef CONFIG_IWLWIFI_DEBUG
1233 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1234 {
1235         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1236
1237         IWL_DEBUG_RADIO("RX CONFIG:\n");
1238         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1239         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1240         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1241         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1242                         le32_to_cpu(rxon->filter_flags));
1243         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1244         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1245                         rxon->ofdm_basic_rates);
1246         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1247         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1248         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1249         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1250 }
1251 #endif
1252
1253 /* call this function to flush any scheduled tasklet */
1254 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1255 {
1256         /* wait to make sure we flush pending tasklet*/
1257         synchronize_irq(priv->pci_dev->irq);
1258         tasklet_kill(&priv->irq_tasklet);
1259 }
1260
1261 /**
1262  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1263  */
1264 static void iwl_irq_handle_error(struct iwl_priv *priv)
1265 {
1266         /* Set the FW error flag -- cleared on iwl_down */
1267         set_bit(STATUS_FW_ERROR, &priv->status);
1268
1269         /* Cancel currently queued command. */
1270         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1271
1272 #ifdef CONFIG_IWLWIFI_DEBUG
1273         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1274                 iwl_dump_nic_error_log(priv);
1275                 iwl_dump_nic_event_log(priv);
1276                 iwl_print_rx_config_cmd(priv);
1277         }
1278 #endif
1279
1280         wake_up_interruptible(&priv->wait_command_queue);
1281
1282         /* Keep the restart process from trying to send host
1283          * commands by clearing the INIT status bit */
1284         clear_bit(STATUS_READY, &priv->status);
1285
1286         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1287                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1288                           "Restarting adapter due to uCode error.\n");
1289
1290                 if (iwl_is_associated(priv)) {
1291                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1292                                sizeof(priv->recovery_rxon));
1293                         priv->error_recovering = 1;
1294                 }
1295                 if (priv->cfg->mod_params->restart_fw)
1296                         queue_work(priv->workqueue, &priv->restart);
1297         }
1298 }
1299
1300 static void iwl_error_recovery(struct iwl_priv *priv)
1301 {
1302         unsigned long flags;
1303
1304         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1305                sizeof(priv->staging_rxon));
1306         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1307         iwl_commit_rxon(priv);
1308
1309         iwl_rxon_add_station(priv, priv->bssid, 1);
1310
1311         spin_lock_irqsave(&priv->lock, flags);
1312         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1313         priv->error_recovering = 0;
1314         spin_unlock_irqrestore(&priv->lock, flags);
1315 }
1316
1317 static void iwl_irq_tasklet(struct iwl_priv *priv)
1318 {
1319         u32 inta, handled = 0;
1320         u32 inta_fh;
1321         unsigned long flags;
1322 #ifdef CONFIG_IWLWIFI_DEBUG
1323         u32 inta_mask;
1324 #endif
1325
1326         spin_lock_irqsave(&priv->lock, flags);
1327
1328         /* Ack/clear/reset pending uCode interrupts.
1329          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1330          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1331         inta = iwl_read32(priv, CSR_INT);
1332         iwl_write32(priv, CSR_INT, inta);
1333
1334         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1335          * Any new interrupts that happen after this, either while we're
1336          * in this tasklet, or later, will show up in next ISR/tasklet. */
1337         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1338         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1339
1340 #ifdef CONFIG_IWLWIFI_DEBUG
1341         if (priv->debug_level & IWL_DL_ISR) {
1342                 /* just for debug */
1343                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1344                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1345                               inta, inta_mask, inta_fh);
1346         }
1347 #endif
1348
1349         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1350          * atomic, make sure that inta covers all the interrupts that
1351          * we've discovered, even if FH interrupt came in just after
1352          * reading CSR_INT. */
1353         if (inta_fh & CSR49_FH_INT_RX_MASK)
1354                 inta |= CSR_INT_BIT_FH_RX;
1355         if (inta_fh & CSR49_FH_INT_TX_MASK)
1356                 inta |= CSR_INT_BIT_FH_TX;
1357
1358         /* Now service all interrupt bits discovered above. */
1359         if (inta & CSR_INT_BIT_HW_ERR) {
1360                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1361
1362                 /* Tell the device to stop sending interrupts */
1363                 iwl_disable_interrupts(priv);
1364
1365                 iwl_irq_handle_error(priv);
1366
1367                 handled |= CSR_INT_BIT_HW_ERR;
1368
1369                 spin_unlock_irqrestore(&priv->lock, flags);
1370
1371                 return;
1372         }
1373
1374 #ifdef CONFIG_IWLWIFI_DEBUG
1375         if (priv->debug_level & (IWL_DL_ISR)) {
1376                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1377                 if (inta & CSR_INT_BIT_SCD)
1378                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1379                                       "the frame/frames.\n");
1380
1381                 /* Alive notification via Rx interrupt will do the real work */
1382                 if (inta & CSR_INT_BIT_ALIVE)
1383                         IWL_DEBUG_ISR("Alive interrupt\n");
1384         }
1385 #endif
1386         /* Safely ignore these bits for debug checks below */
1387         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1388
1389         /* HW RF KILL switch toggled */
1390         if (inta & CSR_INT_BIT_RF_KILL) {
1391                 int hw_rf_kill = 0;
1392                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1393                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1394                         hw_rf_kill = 1;
1395
1396                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1397                                 hw_rf_kill ? "disable radio" : "enable radio");
1398
1399                 /* driver only loads ucode once setting the interface up.
1400                  * the driver as well won't allow loading if RFKILL is set
1401                  * therefore no need to restart the driver from this handler
1402                  */
1403                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1404                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1405                         if (priv->is_open && !iwl_is_rfkill(priv))
1406                                 queue_work(priv->workqueue, &priv->up);
1407                 }
1408
1409                 handled |= CSR_INT_BIT_RF_KILL;
1410         }
1411
1412         /* Chip got too hot and stopped itself */
1413         if (inta & CSR_INT_BIT_CT_KILL) {
1414                 IWL_ERROR("Microcode CT kill error detected.\n");
1415                 handled |= CSR_INT_BIT_CT_KILL;
1416         }
1417
1418         /* Error detected by uCode */
1419         if (inta & CSR_INT_BIT_SW_ERR) {
1420                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1421                           inta);
1422                 iwl_irq_handle_error(priv);
1423                 handled |= CSR_INT_BIT_SW_ERR;
1424         }
1425
1426         /* uCode wakes up after power-down sleep */
1427         if (inta & CSR_INT_BIT_WAKEUP) {
1428                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1429                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1430                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1431                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1432                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1433                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1434                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1435                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1436
1437                 handled |= CSR_INT_BIT_WAKEUP;
1438         }
1439
1440         /* All uCode command responses, including Tx command responses,
1441          * Rx "responses" (frame-received notification), and other
1442          * notifications from uCode come through here*/
1443         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1444                 iwl_rx_handle(priv);
1445                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1446         }
1447
1448         if (inta & CSR_INT_BIT_FH_TX) {
1449                 IWL_DEBUG_ISR("Tx interrupt\n");
1450                 handled |= CSR_INT_BIT_FH_TX;
1451                 /* FH finished to write, send event */
1452                 priv->ucode_write_complete = 1;
1453                 wake_up_interruptible(&priv->wait_command_queue);
1454         }
1455
1456         if (inta & ~handled)
1457                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1458
1459         if (inta & ~CSR_INI_SET_MASK) {
1460                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1461                          inta & ~CSR_INI_SET_MASK);
1462                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1463         }
1464
1465         /* Re-enable all interrupts */
1466         /* only Re-enable if diabled by irq */
1467         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1468                 iwl_enable_interrupts(priv);
1469
1470 #ifdef CONFIG_IWLWIFI_DEBUG
1471         if (priv->debug_level & (IWL_DL_ISR)) {
1472                 inta = iwl_read32(priv, CSR_INT);
1473                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1474                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1475                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1476                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1477         }
1478 #endif
1479         spin_unlock_irqrestore(&priv->lock, flags);
1480 }
1481
1482 static irqreturn_t iwl_isr(int irq, void *data)
1483 {
1484         struct iwl_priv *priv = data;
1485         u32 inta, inta_mask;
1486         u32 inta_fh;
1487         if (!priv)
1488                 return IRQ_NONE;
1489
1490         spin_lock(&priv->lock);
1491
1492         /* Disable (but don't clear!) interrupts here to avoid
1493          *    back-to-back ISRs and sporadic interrupts from our NIC.
1494          * If we have something to service, the tasklet will re-enable ints.
1495          * If we *don't* have something, we'll re-enable before leaving here. */
1496         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1497         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1498
1499         /* Discover which interrupts are active/pending */
1500         inta = iwl_read32(priv, CSR_INT);
1501         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1502
1503         /* Ignore interrupt if there's nothing in NIC to service.
1504          * This may be due to IRQ shared with another device,
1505          * or due to sporadic interrupts thrown from our NIC. */
1506         if (!inta && !inta_fh) {
1507                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1508                 goto none;
1509         }
1510
1511         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1512                 /* Hardware disappeared. It might have already raised
1513                  * an interrupt */
1514                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%08x\n", inta);
1515                 goto unplugged;
1516         }
1517
1518         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1519                       inta, inta_mask, inta_fh);
1520
1521         inta &= ~CSR_INT_BIT_SCD;
1522
1523         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1524         if (likely(inta || inta_fh))
1525                 tasklet_schedule(&priv->irq_tasklet);
1526
1527  unplugged:
1528         spin_unlock(&priv->lock);
1529         return IRQ_HANDLED;
1530
1531  none:
1532         /* re-enable interrupts here since we don't have anything to service. */
1533         /* only Re-enable if diabled by irq */
1534         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1535                 iwl_enable_interrupts(priv);
1536         spin_unlock(&priv->lock);
1537         return IRQ_NONE;
1538 }
1539
1540 /******************************************************************************
1541  *
1542  * uCode download functions
1543  *
1544  ******************************************************************************/
1545
1546 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1547 {
1548         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1549         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1550         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1551         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1552         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1553         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1554 }
1555
1556 static void iwl_nic_start(struct iwl_priv *priv)
1557 {
1558         /* Remove all resets to allow NIC to operate */
1559         iwl_write32(priv, CSR_RESET, 0);
1560 }
1561
1562
1563 /**
1564  * iwl_read_ucode - Read uCode images from disk file.
1565  *
1566  * Copy into buffers for card to fetch via bus-mastering
1567  */
1568 static int iwl_read_ucode(struct iwl_priv *priv)
1569 {
1570         struct iwl_ucode *ucode;
1571         int ret = -EINVAL, index;
1572         const struct firmware *ucode_raw;
1573         const char *name_pre = priv->cfg->fw_name_pre;
1574         const unsigned int api_max = priv->cfg->ucode_api_max;
1575         const unsigned int api_min = priv->cfg->ucode_api_min;
1576         char buf[25];
1577         u8 *src;
1578         size_t len;
1579         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1580
1581         /* Ask kernel firmware_class module to get the boot firmware off disk.
1582          * request_firmware() is synchronous, file is in memory on return. */
1583         for (index = api_max; index >= api_min; index--) {
1584                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1585                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1586                 if (ret < 0) {
1587                         IWL_ERROR("%s firmware file req failed: Reason %d\n",
1588                                   buf, ret);
1589                         if (ret == -ENOENT)
1590                                 continue;
1591                         else
1592                                 goto error;
1593                 } else {
1594                         if (index < api_max)
1595                                 IWL_ERROR("Loaded firmware %s, which is deprecated. Please use API v%u instead.\n",
1596                                           buf, api_max);
1597                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1598                                        buf, ucode_raw->size);
1599                         break;
1600                 }
1601         }
1602
1603         if (ret < 0)
1604                 goto error;
1605
1606         /* Make sure that we got at least our header! */
1607         if (ucode_raw->size < sizeof(*ucode)) {
1608                 IWL_ERROR("File size way too small!\n");
1609                 ret = -EINVAL;
1610                 goto err_release;
1611         }
1612
1613         /* Data from ucode file:  header followed by uCode images */
1614         ucode = (void *)ucode_raw->data;
1615
1616         priv->ucode_ver = le32_to_cpu(ucode->ver);
1617         api_ver = IWL_UCODE_API(priv->ucode_ver);
1618         inst_size = le32_to_cpu(ucode->inst_size);
1619         data_size = le32_to_cpu(ucode->data_size);
1620         init_size = le32_to_cpu(ucode->init_size);
1621         init_data_size = le32_to_cpu(ucode->init_data_size);
1622         boot_size = le32_to_cpu(ucode->boot_size);
1623
1624         /* api_ver should match the api version forming part of the
1625          * firmware filename ... but we don't check for that and only rely
1626          * on the API version read from firware header from here on forward */
1627
1628         if (api_ver < api_min || api_ver > api_max) {
1629                 IWL_ERROR("Driver unable to support your firmware API. "
1630                           "Driver supports v%u, firmware is v%u.\n",
1631                           api_max, api_ver);
1632                 priv->ucode_ver = 0;
1633                 ret = -EINVAL;
1634                 goto err_release;
1635         }
1636         if (api_ver != api_max)
1637                 IWL_ERROR("Firmware has old API version. Expected v%u, "
1638                           "got v%u. New firmware can be obtained "
1639                           "from http://www.intellinuxwireless.org.\n",
1640                           api_max, api_ver);
1641
1642         printk(KERN_INFO DRV_NAME " loaded firmware version %u.%u.%u.%u\n",
1643                        IWL_UCODE_MAJOR(priv->ucode_ver),
1644                        IWL_UCODE_MINOR(priv->ucode_ver),
1645                        IWL_UCODE_API(priv->ucode_ver),
1646                        IWL_UCODE_SERIAL(priv->ucode_ver));
1647
1648         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1649                        priv->ucode_ver);
1650         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1651                        inst_size);
1652         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1653                        data_size);
1654         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1655                        init_size);
1656         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1657                        init_data_size);
1658         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1659                        boot_size);
1660
1661         /* Verify size of file vs. image size info in file's header */
1662         if (ucode_raw->size < sizeof(*ucode) +
1663                 inst_size + data_size + init_size +
1664                 init_data_size + boot_size) {
1665
1666                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1667                                (int)ucode_raw->size);
1668                 ret = -EINVAL;
1669                 goto err_release;
1670         }
1671
1672         /* Verify that uCode images will fit in card's SRAM */
1673         if (inst_size > priv->hw_params.max_inst_size) {
1674                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1675                                inst_size);
1676                 ret = -EINVAL;
1677                 goto err_release;
1678         }
1679
1680         if (data_size > priv->hw_params.max_data_size) {
1681                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1682                                 data_size);
1683                 ret = -EINVAL;
1684                 goto err_release;
1685         }
1686         if (init_size > priv->hw_params.max_inst_size) {
1687                 IWL_DEBUG_INFO
1688                     ("uCode init instr len %d too large to fit in\n",
1689                       init_size);
1690                 ret = -EINVAL;
1691                 goto err_release;
1692         }
1693         if (init_data_size > priv->hw_params.max_data_size) {
1694                 IWL_DEBUG_INFO
1695                     ("uCode init data len %d too large to fit in\n",
1696                       init_data_size);
1697                 ret = -EINVAL;
1698                 goto err_release;
1699         }
1700         if (boot_size > priv->hw_params.max_bsm_size) {
1701                 IWL_DEBUG_INFO
1702                     ("uCode boot instr len %d too large to fit in\n",
1703                       boot_size);
1704                 ret = -EINVAL;
1705                 goto err_release;
1706         }
1707
1708         /* Allocate ucode buffers for card's bus-master loading ... */
1709
1710         /* Runtime instructions and 2 copies of data:
1711          * 1) unmodified from disk
1712          * 2) backup cache for save/restore during power-downs */
1713         priv->ucode_code.len = inst_size;
1714         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1715
1716         priv->ucode_data.len = data_size;
1717         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1718
1719         priv->ucode_data_backup.len = data_size;
1720         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1721
1722         if (!priv->ucode_code.v_addr || !priv->ucode_data.v_addr ||
1723             !priv->ucode_data_backup.v_addr)
1724                 goto err_pci_alloc;
1725
1726         /* Initialization instructions and data */
1727         if (init_size && init_data_size) {
1728                 priv->ucode_init.len = init_size;
1729                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1730
1731                 priv->ucode_init_data.len = init_data_size;
1732                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1733
1734                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1735                         goto err_pci_alloc;
1736         }
1737
1738         /* Bootstrap (instructions only, no data) */
1739         if (boot_size) {
1740                 priv->ucode_boot.len = boot_size;
1741                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1742
1743                 if (!priv->ucode_boot.v_addr)
1744                         goto err_pci_alloc;
1745         }
1746
1747         /* Copy images into buffers for card's bus-master reads ... */
1748
1749         /* Runtime instructions (first block of data in file) */
1750         src = &ucode->data[0];
1751         len = priv->ucode_code.len;
1752         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1753         memcpy(priv->ucode_code.v_addr, src, len);
1754         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1755                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1756
1757         /* Runtime data (2nd block)
1758          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1759         src = &ucode->data[inst_size];
1760         len = priv->ucode_data.len;
1761         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1762         memcpy(priv->ucode_data.v_addr, src, len);
1763         memcpy(priv->ucode_data_backup.v_addr, src, len);
1764
1765         /* Initialization instructions (3rd block) */
1766         if (init_size) {
1767                 src = &ucode->data[inst_size + data_size];
1768                 len = priv->ucode_init.len;
1769                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1770                                 len);
1771                 memcpy(priv->ucode_init.v_addr, src, len);
1772         }
1773
1774         /* Initialization data (4th block) */
1775         if (init_data_size) {
1776                 src = &ucode->data[inst_size + data_size + init_size];
1777                 len = priv->ucode_init_data.len;
1778                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1779                                len);
1780                 memcpy(priv->ucode_init_data.v_addr, src, len);
1781         }
1782
1783         /* Bootstrap instructions (5th block) */
1784         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1785         len = priv->ucode_boot.len;
1786         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1787         memcpy(priv->ucode_boot.v_addr, src, len);
1788
1789         /* We have our copies now, allow OS release its copies */
1790         release_firmware(ucode_raw);
1791         return 0;
1792
1793  err_pci_alloc:
1794         IWL_ERROR("failed to allocate pci memory\n");
1795         ret = -ENOMEM;
1796         iwl_dealloc_ucode_pci(priv);
1797
1798  err_release:
1799         release_firmware(ucode_raw);
1800
1801  error:
1802         return ret;
1803 }
1804
1805 /* temporary */
1806 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1807                                  struct sk_buff *skb);
1808
1809 /**
1810  * iwl_alive_start - called after REPLY_ALIVE notification received
1811  *                   from protocol/runtime uCode (initialization uCode's
1812  *                   Alive gets handled by iwl_init_alive_start()).
1813  */
1814 static void iwl_alive_start(struct iwl_priv *priv)
1815 {
1816         int ret = 0;
1817
1818         IWL_DEBUG_INFO("Runtime Alive received.\n");
1819
1820         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1821                 /* We had an error bringing up the hardware, so take it
1822                  * all the way back down so we can try again */
1823                 IWL_DEBUG_INFO("Alive failed.\n");
1824                 goto restart;
1825         }
1826
1827         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1828          * This is a paranoid check, because we would not have gotten the
1829          * "runtime" alive if code weren't properly loaded.  */
1830         if (iwl_verify_ucode(priv)) {
1831                 /* Runtime instruction load was bad;
1832                  * take it all the way back down so we can try again */
1833                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1834                 goto restart;
1835         }
1836
1837         iwl_clear_stations_table(priv);
1838         ret = priv->cfg->ops->lib->alive_notify(priv);
1839         if (ret) {
1840                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1841                             ret);
1842                 goto restart;
1843         }
1844
1845         /* After the ALIVE response, we can send host commands to the uCode */
1846         set_bit(STATUS_ALIVE, &priv->status);
1847
1848         if (iwl_is_rfkill(priv))
1849                 return;
1850
1851         ieee80211_wake_queues(priv->hw);
1852
1853         priv->active_rate = priv->rates_mask;
1854         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1855
1856         if (iwl_is_associated(priv)) {
1857                 struct iwl_rxon_cmd *active_rxon =
1858                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1859
1860                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1861                        sizeof(priv->staging_rxon));
1862                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1863         } else {
1864                 /* Initialize our rx_config data */
1865                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1866                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1867         }
1868
1869         /* Configure Bluetooth device coexistence support */
1870         iwl_send_bt_config(priv);
1871
1872         iwl_reset_run_time_calib(priv);
1873
1874         /* Configure the adapter for unassociated operation */
1875         iwl_commit_rxon(priv);
1876
1877         /* At this point, the NIC is initialized and operational */
1878         iwl_rf_kill_ct_config(priv);
1879
1880         iwl_leds_register(priv);
1881
1882         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1883         set_bit(STATUS_READY, &priv->status);
1884         wake_up_interruptible(&priv->wait_command_queue);
1885
1886         if (priv->error_recovering)
1887                 iwl_error_recovery(priv);
1888
1889         iwl_power_update_mode(priv, 1);
1890
1891         /* reassociate for ADHOC mode */
1892         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1893                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1894                                                                 priv->vif);
1895                 if (beacon)
1896                         iwl_mac_beacon_update(priv->hw, beacon);
1897         }
1898
1899
1900         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1901                 iwl_set_mode(priv, priv->iw_mode);
1902
1903         return;
1904
1905  restart:
1906         queue_work(priv->workqueue, &priv->restart);
1907 }
1908
1909 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1910
1911 static void __iwl_down(struct iwl_priv *priv)
1912 {
1913         unsigned long flags;
1914         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1915
1916         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1917
1918         if (!exit_pending)
1919                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1920
1921         iwl_leds_unregister(priv);
1922
1923         iwl_clear_stations_table(priv);
1924
1925         /* Unblock any waiting calls */
1926         wake_up_interruptible_all(&priv->wait_command_queue);
1927
1928         /* Wipe out the EXIT_PENDING status bit if we are not actually
1929          * exiting the module */
1930         if (!exit_pending)
1931                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1932
1933         /* stop and reset the on-board processor */
1934         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1935
1936         /* tell the device to stop sending interrupts */
1937         spin_lock_irqsave(&priv->lock, flags);
1938         iwl_disable_interrupts(priv);
1939         spin_unlock_irqrestore(&priv->lock, flags);
1940         iwl_synchronize_irq(priv);
1941
1942         if (priv->mac80211_registered)
1943                 ieee80211_stop_queues(priv->hw);
1944
1945         /* If we have not previously called iwl_init() then
1946          * clear all bits but the RF Kill and SUSPEND bits and return */
1947         if (!iwl_is_init(priv)) {
1948                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1949                                         STATUS_RF_KILL_HW |
1950                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1951                                         STATUS_RF_KILL_SW |
1952                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1953                                         STATUS_GEO_CONFIGURED |
1954                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1955                                         STATUS_IN_SUSPEND |
1956                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1957                                         STATUS_EXIT_PENDING;
1958                 goto exit;
1959         }
1960
1961         /* ...otherwise clear out all the status bits but the RF Kill and
1962          * SUSPEND bits and continue taking the NIC down. */
1963         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1964                                 STATUS_RF_KILL_HW |
1965                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1966                                 STATUS_RF_KILL_SW |
1967                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1968                                 STATUS_GEO_CONFIGURED |
1969                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1970                                 STATUS_IN_SUSPEND |
1971                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1972                                 STATUS_FW_ERROR |
1973                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1974                                 STATUS_EXIT_PENDING;
1975
1976         spin_lock_irqsave(&priv->lock, flags);
1977         iwl_clear_bit(priv, CSR_GP_CNTRL,
1978                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1979         spin_unlock_irqrestore(&priv->lock, flags);
1980
1981         iwl_txq_ctx_stop(priv);
1982         iwl_rxq_stop(priv);
1983
1984         spin_lock_irqsave(&priv->lock, flags);
1985         if (!iwl_grab_nic_access(priv)) {
1986                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1987                                          APMG_CLK_VAL_DMA_CLK_RQT);
1988                 iwl_release_nic_access(priv);
1989         }
1990         spin_unlock_irqrestore(&priv->lock, flags);
1991
1992         udelay(5);
1993
1994         /* FIXME: apm_ops.suspend(priv) */
1995         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1996                 priv->cfg->ops->lib->apm_ops.stop(priv);
1997         else
1998                 priv->cfg->ops->lib->apm_ops.reset(priv);
1999  exit:
2000         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2001
2002         if (priv->ibss_beacon)
2003                 dev_kfree_skb(priv->ibss_beacon);
2004         priv->ibss_beacon = NULL;
2005
2006         /* clear out any free frames */
2007         iwl_clear_free_frames(priv);
2008 }
2009
2010 static void iwl_down(struct iwl_priv *priv)
2011 {
2012         mutex_lock(&priv->mutex);
2013         __iwl_down(priv);
2014         mutex_unlock(&priv->mutex);
2015
2016         iwl_cancel_deferred_work(priv);
2017 }
2018
2019 #define MAX_HW_RESTARTS 5
2020
2021 static int __iwl_up(struct iwl_priv *priv)
2022 {
2023         int i;
2024         int ret;
2025
2026         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2027                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2028                 return -EIO;
2029         }
2030
2031         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2032                 IWL_ERROR("ucode not available for device bringup\n");
2033                 return -EIO;
2034         }
2035
2036         /* If platform's RF_KILL switch is NOT set to KILL */
2037         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2038                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2039         else
2040                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2041
2042         if (iwl_is_rfkill(priv)) {
2043                 iwl_enable_interrupts(priv);
2044                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2045                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2046                 return 0;
2047         }
2048
2049         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2050
2051         ret = iwl_hw_nic_init(priv);
2052         if (ret) {
2053                 IWL_ERROR("Unable to init nic\n");
2054                 return ret;
2055         }
2056
2057         /* make sure rfkill handshake bits are cleared */
2058         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2059         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2060                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2061
2062         /* clear (again), then enable host interrupts */
2063         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2064         iwl_enable_interrupts(priv);
2065
2066         /* really make sure rfkill handshake bits are cleared */
2067         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2068         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2069
2070         /* Copy original ucode data image from disk into backup cache.
2071          * This will be used to initialize the on-board processor's
2072          * data SRAM for a clean start when the runtime program first loads. */
2073         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2074                priv->ucode_data.len);
2075
2076         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2077
2078                 iwl_clear_stations_table(priv);
2079
2080                 /* load bootstrap state machine,
2081                  * load bootstrap program into processor's memory,
2082                  * prepare to load the "initialize" uCode */
2083                 ret = priv->cfg->ops->lib->load_ucode(priv);
2084
2085                 if (ret) {
2086                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2087                         continue;
2088                 }
2089
2090                 /* Clear out the uCode error bit if it is set */
2091                 clear_bit(STATUS_FW_ERROR, &priv->status);
2092
2093                 /* start card; "initialize" will load runtime ucode */
2094                 iwl_nic_start(priv);
2095
2096                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2097
2098                 return 0;
2099         }
2100
2101         set_bit(STATUS_EXIT_PENDING, &priv->status);
2102         __iwl_down(priv);
2103         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2104
2105         /* tried to restart and config the device for as long as our
2106          * patience could withstand */
2107         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2108         return -EIO;
2109 }
2110
2111
2112 /*****************************************************************************
2113  *
2114  * Workqueue callbacks
2115  *
2116  *****************************************************************************/
2117
2118 static void iwl_bg_init_alive_start(struct work_struct *data)
2119 {
2120         struct iwl_priv *priv =
2121             container_of(data, struct iwl_priv, init_alive_start.work);
2122
2123         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2124                 return;
2125
2126         mutex_lock(&priv->mutex);
2127         priv->cfg->ops->lib->init_alive_start(priv);
2128         mutex_unlock(&priv->mutex);
2129 }
2130
2131 static void iwl_bg_alive_start(struct work_struct *data)
2132 {
2133         struct iwl_priv *priv =
2134             container_of(data, struct iwl_priv, alive_start.work);
2135
2136         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2137                 return;
2138
2139         mutex_lock(&priv->mutex);
2140         iwl_alive_start(priv);
2141         mutex_unlock(&priv->mutex);
2142 }
2143
2144 static void iwl_bg_rf_kill(struct work_struct *work)
2145 {
2146         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2147
2148         wake_up_interruptible(&priv->wait_command_queue);
2149
2150         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2151                 return;
2152
2153         mutex_lock(&priv->mutex);
2154
2155         if (!iwl_is_rfkill(priv)) {
2156                 IWL_DEBUG(IWL_DL_RF_KILL,
2157                           "HW and/or SW RF Kill no longer active, restarting "
2158                           "device\n");
2159                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2160                         queue_work(priv->workqueue, &priv->restart);
2161         } else {
2162                 /* make sure mac80211 stop sending Tx frame */
2163                 if (priv->mac80211_registered)
2164                         ieee80211_stop_queues(priv->hw);
2165
2166                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2167                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2168                                           "disabled by SW switch\n");
2169                 else
2170                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2171                                     "Kill switch must be turned off for "
2172                                     "wireless networking to work.\n");
2173         }
2174         mutex_unlock(&priv->mutex);
2175         iwl_rfkill_set_hw_state(priv);
2176 }
2177
2178 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2179 {
2180         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2181                         run_time_calib_work);
2182
2183         mutex_lock(&priv->mutex);
2184
2185         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2186             test_bit(STATUS_SCANNING, &priv->status)) {
2187                 mutex_unlock(&priv->mutex);
2188                 return;
2189         }
2190
2191         if (priv->start_calib) {
2192                 iwl_chain_noise_calibration(priv, &priv->statistics);
2193
2194                 iwl_sensitivity_calibration(priv, &priv->statistics);
2195         }
2196
2197         mutex_unlock(&priv->mutex);
2198         return;
2199 }
2200
2201 static void iwl_bg_up(struct work_struct *data)
2202 {
2203         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2204
2205         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2206                 return;
2207
2208         mutex_lock(&priv->mutex);
2209         __iwl_up(priv);
2210         mutex_unlock(&priv->mutex);
2211         iwl_rfkill_set_hw_state(priv);
2212 }
2213
2214 static void iwl_bg_restart(struct work_struct *data)
2215 {
2216         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2217
2218         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2219                 return;
2220
2221         iwl_down(priv);
2222         queue_work(priv->workqueue, &priv->up);
2223 }
2224
2225 static void iwl_bg_rx_replenish(struct work_struct *data)
2226 {
2227         struct iwl_priv *priv =
2228             container_of(data, struct iwl_priv, rx_replenish);
2229
2230         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2231                 return;
2232
2233         mutex_lock(&priv->mutex);
2234         iwl_rx_replenish(priv);
2235         mutex_unlock(&priv->mutex);
2236 }
2237
2238 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2239
2240 static void iwl_post_associate(struct iwl_priv *priv)
2241 {
2242         struct ieee80211_conf *conf = NULL;
2243         int ret = 0;
2244         unsigned long flags;
2245
2246         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2247                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2248                 return;
2249         }
2250
2251         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2252                         priv->assoc_id, priv->active_rxon.bssid_addr);
2253
2254
2255         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2256                 return;
2257
2258
2259         if (!priv->vif || !priv->is_open)
2260                 return;
2261
2262         iwl_power_cancel_timeout(priv);
2263         iwl_scan_cancel_timeout(priv, 200);
2264
2265         conf = ieee80211_get_hw_conf(priv->hw);
2266
2267         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2268         iwl_commit_rxon(priv);
2269
2270         iwl_setup_rxon_timing(priv);
2271         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2272                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2273         if (ret)
2274                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2275                             "Attempting to continue.\n");
2276
2277         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2278
2279         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2280
2281         iwl_set_rxon_chain(priv);
2282         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2283
2284         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2285                         priv->assoc_id, priv->beacon_int);
2286
2287         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2288                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2289         else
2290                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2291
2292         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2293                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2294                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2295                 else
2296                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2297
2298                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2299                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2300
2301         }
2302
2303         iwl_commit_rxon(priv);
2304
2305         switch (priv->iw_mode) {
2306         case NL80211_IFTYPE_STATION:
2307                 break;
2308
2309         case NL80211_IFTYPE_ADHOC:
2310
2311                 /* assume default assoc id */
2312                 priv->assoc_id = 1;
2313
2314                 iwl_rxon_add_station(priv, priv->bssid, 0);
2315                 iwl_send_beacon_cmd(priv);
2316
2317                 break;
2318
2319         default:
2320                 IWL_ERROR("%s Should not be called in %d mode\n",
2321                           __func__, priv->iw_mode);
2322                 break;
2323         }
2324
2325         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2326                 priv->assoc_station_added = 1;
2327
2328         spin_lock_irqsave(&priv->lock, flags);
2329         iwl_activate_qos(priv, 0);
2330         spin_unlock_irqrestore(&priv->lock, flags);
2331
2332         /* the chain noise calibration will enabled PM upon completion
2333          * If chain noise has already been run, then we need to enable
2334          * power management here */
2335         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2336                 iwl_power_enable_management(priv);
2337
2338         /* Enable Rx differential gain and sensitivity calibrations */
2339         iwl_chain_noise_reset(priv);
2340         priv->start_calib = 1;
2341
2342 }
2343
2344 /*****************************************************************************
2345  *
2346  * mac80211 entry point functions
2347  *
2348  *****************************************************************************/
2349
2350 #define UCODE_READY_TIMEOUT     (4 * HZ)
2351
2352 static int iwl_mac_start(struct ieee80211_hw *hw)
2353 {
2354         struct iwl_priv *priv = hw->priv;
2355         int ret;
2356         u16 pci_cmd;
2357
2358         IWL_DEBUG_MAC80211("enter\n");
2359
2360         if (pci_enable_device(priv->pci_dev)) {
2361                 IWL_ERROR("Fail to pci_enable_device\n");
2362                 return -ENODEV;
2363         }
2364         pci_restore_state(priv->pci_dev);
2365         pci_enable_msi(priv->pci_dev);
2366
2367         /* enable interrupts if needed: hw bug w/a */
2368         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2369         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2370                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2371                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2372         }
2373
2374         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2375                           DRV_NAME, priv);
2376         if (ret) {
2377                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2378                 goto out_disable_msi;
2379         }
2380
2381         /* we should be verifying the device is ready to be opened */
2382         mutex_lock(&priv->mutex);
2383
2384         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2385         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2386          * ucode filename and max sizes are card-specific. */
2387
2388         if (!priv->ucode_code.len) {
2389                 ret = iwl_read_ucode(priv);
2390                 if (ret) {
2391                         IWL_ERROR("Could not read microcode: %d\n", ret);
2392                         mutex_unlock(&priv->mutex);
2393                         goto out_release_irq;
2394                 }
2395         }
2396
2397         ret = __iwl_up(priv);
2398
2399         mutex_unlock(&priv->mutex);
2400
2401         iwl_rfkill_set_hw_state(priv);
2402
2403         if (ret)
2404                 goto out_release_irq;
2405
2406         if (iwl_is_rfkill(priv))
2407                 goto out;
2408
2409         IWL_DEBUG_INFO("Start UP work done.\n");
2410
2411         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2412                 return 0;
2413
2414         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2415          * mac80211 will not be run successfully. */
2416         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2417                         test_bit(STATUS_READY, &priv->status),
2418                         UCODE_READY_TIMEOUT);
2419         if (!ret) {
2420                 if (!test_bit(STATUS_READY, &priv->status)) {
2421                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2422                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2423                         ret = -ETIMEDOUT;
2424                         goto out_release_irq;
2425                 }
2426         }
2427
2428 out:
2429         priv->is_open = 1;
2430         IWL_DEBUG_MAC80211("leave\n");
2431         return 0;
2432
2433 out_release_irq:
2434         free_irq(priv->pci_dev->irq, priv);
2435 out_disable_msi:
2436         pci_disable_msi(priv->pci_dev);
2437         pci_disable_device(priv->pci_dev);
2438         priv->is_open = 0;
2439         IWL_DEBUG_MAC80211("leave - failed\n");
2440         return ret;
2441 }
2442
2443 static void iwl_mac_stop(struct ieee80211_hw *hw)
2444 {
2445         struct iwl_priv *priv = hw->priv;
2446
2447         IWL_DEBUG_MAC80211("enter\n");
2448
2449         if (!priv->is_open) {
2450                 IWL_DEBUG_MAC80211("leave - skip\n");
2451                 return;
2452         }
2453
2454         priv->is_open = 0;
2455
2456         if (iwl_is_ready_rf(priv)) {
2457                 /* stop mac, cancel any scan request and clear
2458                  * RXON_FILTER_ASSOC_MSK BIT
2459                  */
2460                 mutex_lock(&priv->mutex);
2461                 iwl_scan_cancel_timeout(priv, 100);
2462                 mutex_unlock(&priv->mutex);
2463         }
2464
2465         iwl_down(priv);
2466
2467         flush_workqueue(priv->workqueue);
2468         free_irq(priv->pci_dev->irq, priv);
2469         pci_disable_msi(priv->pci_dev);
2470         pci_save_state(priv->pci_dev);
2471         pci_disable_device(priv->pci_dev);
2472
2473         IWL_DEBUG_MAC80211("leave\n");
2474 }
2475
2476 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2477 {
2478         struct iwl_priv *priv = hw->priv;
2479
2480         IWL_DEBUG_MACDUMP("enter\n");
2481
2482         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2483                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2484
2485         if (iwl_tx_skb(priv, skb))
2486                 dev_kfree_skb_any(skb);
2487
2488         IWL_DEBUG_MACDUMP("leave\n");
2489         return NETDEV_TX_OK;
2490 }
2491
2492 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2493                                  struct ieee80211_if_init_conf *conf)
2494 {
2495         struct iwl_priv *priv = hw->priv;
2496         unsigned long flags;
2497
2498         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2499
2500         if (priv->vif) {
2501                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2502                 return -EOPNOTSUPP;
2503         }
2504
2505         spin_lock_irqsave(&priv->lock, flags);
2506         priv->vif = conf->vif;
2507         priv->iw_mode = conf->type;
2508
2509         spin_unlock_irqrestore(&priv->lock, flags);
2510
2511         mutex_lock(&priv->mutex);
2512
2513         if (conf->mac_addr) {
2514                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2515                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2516         }
2517
2518         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2519                 /* we are not ready, will run again when ready */
2520                 set_bit(STATUS_MODE_PENDING, &priv->status);
2521
2522         mutex_unlock(&priv->mutex);
2523
2524         IWL_DEBUG_MAC80211("leave\n");
2525         return 0;
2526 }
2527
2528 /**
2529  * iwl_mac_config - mac80211 config callback
2530  *
2531  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2532  * be set inappropriately and the driver currently sets the hardware up to
2533  * use it whenever needed.
2534  */
2535 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2536 {
2537         struct iwl_priv *priv = hw->priv;
2538         const struct iwl_channel_info *ch_info;
2539         struct ieee80211_conf *conf = &hw->conf;
2540         unsigned long flags;
2541         int ret = 0;
2542         u16 channel;
2543
2544         mutex_lock(&priv->mutex);
2545         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2546
2547         priv->current_ht_config.is_ht = conf->ht.enabled;
2548
2549         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2550                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2551                 goto out;
2552         }
2553
2554         if (!conf->radio_enabled)
2555                 iwl_radio_kill_sw_disable_radio(priv);
2556
2557         if (!iwl_is_ready(priv)) {
2558                 IWL_DEBUG_MAC80211("leave - not ready\n");
2559                 ret = -EIO;
2560                 goto out;
2561         }
2562
2563         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2564                      test_bit(STATUS_SCANNING, &priv->status))) {
2565                 IWL_DEBUG_MAC80211("leave - scanning\n");
2566                 mutex_unlock(&priv->mutex);
2567                 return 0;
2568         }
2569
2570         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2571         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2572         if (!is_channel_valid(ch_info)) {
2573                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2574                 ret = -EINVAL;
2575                 goto out;
2576         }
2577
2578         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2579             !is_channel_ibss(ch_info)) {
2580                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2581                         conf->channel->hw_value, conf->channel->band);
2582                 ret = -EINVAL;
2583                 goto out;
2584         }
2585
2586         spin_lock_irqsave(&priv->lock, flags);
2587
2588
2589         /* if we are switching from ht to 2.4 clear flags
2590          * from any ht related info since 2.4 does not
2591          * support ht */
2592         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2593 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2594             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2595 #endif
2596         )
2597                 priv->staging_rxon.flags = 0;
2598
2599         iwl_set_rxon_channel(priv, conf->channel);
2600
2601         iwl_set_flags_for_band(priv, conf->channel->band);
2602
2603         /* The list of supported rates and rate mask can be different
2604          * for each band; since the band may have changed, reset
2605          * the rate mask to what mac80211 lists */
2606         iwl_set_rate(priv);
2607
2608         spin_unlock_irqrestore(&priv->lock, flags);
2609
2610 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2611         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2612                 iwl_hw_channel_switch(priv, conf->channel);
2613                 goto out;
2614         }
2615 #endif
2616
2617         if (!conf->radio_enabled) {
2618                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2619                 goto out;
2620         }
2621
2622         if (iwl_is_rfkill(priv)) {
2623                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2624                 ret = -EIO;
2625                 goto out;
2626         }
2627
2628         if (conf->flags & IEEE80211_CONF_PS)
2629                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2630         else
2631                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2632         if (ret)
2633                 IWL_DEBUG_MAC80211("Error setting power level\n");
2634
2635         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2636                            priv->tx_power_user_lmt, conf->power_level);
2637
2638         iwl_set_tx_power(priv, conf->power_level, false);
2639
2640         iwl_set_rate(priv);
2641
2642         if (memcmp(&priv->active_rxon,
2643                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2644                 iwl_commit_rxon(priv);
2645         else
2646                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2647
2648         IWL_DEBUG_MAC80211("leave\n");
2649
2650 out:
2651         mutex_unlock(&priv->mutex);
2652         return ret;
2653 }
2654
2655 static void iwl_config_ap(struct iwl_priv *priv)
2656 {
2657         int ret = 0;
2658         unsigned long flags;
2659
2660         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2661                 return;
2662
2663         /* The following should be done only at AP bring up */
2664         if (!iwl_is_associated(priv)) {
2665
2666                 /* RXON - unassoc (to set timing command) */
2667                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2668                 iwl_commit_rxon(priv);
2669
2670                 /* RXON Timing */
2671                 iwl_setup_rxon_timing(priv);
2672                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2673                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2674                 if (ret)
2675                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2676                                         "Attempting to continue.\n");
2677
2678                 iwl_set_rxon_chain(priv);
2679
2680                 /* FIXME: what should be the assoc_id for AP? */
2681                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2682                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2683                         priv->staging_rxon.flags |=
2684                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2685                 else
2686                         priv->staging_rxon.flags &=
2687                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2688
2689                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2690                         if (priv->assoc_capability &
2691                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2692                                 priv->staging_rxon.flags |=
2693                                         RXON_FLG_SHORT_SLOT_MSK;
2694                         else
2695                                 priv->staging_rxon.flags &=
2696                                         ~RXON_FLG_SHORT_SLOT_MSK;
2697
2698                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2699                                 priv->staging_rxon.flags &=
2700                                         ~RXON_FLG_SHORT_SLOT_MSK;
2701                 }
2702                 /* restore RXON assoc */
2703                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2704                 iwl_commit_rxon(priv);
2705                 spin_lock_irqsave(&priv->lock, flags);
2706                 iwl_activate_qos(priv, 1);
2707                 spin_unlock_irqrestore(&priv->lock, flags);
2708                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2709         }
2710         iwl_send_beacon_cmd(priv);
2711
2712         /* FIXME - we need to add code here to detect a totally new
2713          * configuration, reset the AP, unassoc, rxon timing, assoc,
2714          * clear sta table, add BCAST sta... */
2715 }
2716
2717
2718 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2719                                         struct ieee80211_vif *vif,
2720                                     struct ieee80211_if_conf *conf)
2721 {
2722         struct iwl_priv *priv = hw->priv;
2723         int rc;
2724
2725         if (conf == NULL)
2726                 return -EIO;
2727
2728         if (priv->vif != vif) {
2729                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2730                 return 0;
2731         }
2732
2733         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2734             conf->changed & IEEE80211_IFCC_BEACON) {
2735                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2736                 if (!beacon)
2737                         return -ENOMEM;
2738                 mutex_lock(&priv->mutex);
2739                 rc = iwl_mac_beacon_update(hw, beacon);
2740                 mutex_unlock(&priv->mutex);
2741                 if (rc)
2742                         return rc;
2743         }
2744
2745         if (!iwl_is_alive(priv))
2746                 return -EAGAIN;
2747
2748         mutex_lock(&priv->mutex);
2749
2750         if (conf->bssid)
2751                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2752
2753 /*
2754  * very dubious code was here; the probe filtering flag is never set:
2755  *
2756         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2757             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2758  */
2759
2760         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2761                 if (!conf->bssid) {
2762                         conf->bssid = priv->mac_addr;
2763                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2764                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2765                                            conf->bssid);
2766                 }
2767                 if (priv->ibss_beacon)
2768                         dev_kfree_skb(priv->ibss_beacon);
2769
2770                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2771         }
2772
2773         if (iwl_is_rfkill(priv))
2774                 goto done;
2775
2776         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2777             !is_multicast_ether_addr(conf->bssid)) {
2778                 /* If there is currently a HW scan going on in the background
2779                  * then we need to cancel it else the RXON below will fail. */
2780                 if (iwl_scan_cancel_timeout(priv, 100)) {
2781                         IWL_WARNING("Aborted scan still in progress "
2782                                     "after 100ms\n");
2783                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2784                         mutex_unlock(&priv->mutex);
2785                         return -EAGAIN;
2786                 }
2787                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2788
2789                 /* TODO: Audit driver for usage of these members and see
2790                  * if mac80211 deprecates them (priv->bssid looks like it
2791                  * shouldn't be there, but I haven't scanned the IBSS code
2792                  * to verify) - jpk */
2793                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2794
2795                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2796                         iwl_config_ap(priv);
2797                 else {
2798                         rc = iwl_commit_rxon(priv);
2799                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2800                                 iwl_rxon_add_station(
2801                                         priv, priv->active_rxon.bssid_addr, 1);
2802                 }
2803
2804         } else {
2805                 iwl_scan_cancel_timeout(priv, 100);
2806                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2807                 iwl_commit_rxon(priv);
2808         }
2809
2810  done:
2811         IWL_DEBUG_MAC80211("leave\n");
2812         mutex_unlock(&priv->mutex);
2813
2814         return 0;
2815 }
2816
2817 static void iwl_configure_filter(struct ieee80211_hw *hw,
2818                                  unsigned int changed_flags,
2819                                  unsigned int *total_flags,
2820                                  int mc_count, struct dev_addr_list *mc_list)
2821 {
2822         struct iwl_priv *priv = hw->priv;
2823         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2824
2825         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2826                         changed_flags, *total_flags);
2827
2828         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2829                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2830                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2831                 else
2832                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2833         }
2834         if (changed_flags & FIF_ALLMULTI) {
2835                 if (*total_flags & FIF_ALLMULTI)
2836                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2837                 else
2838                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2839         }
2840         if (changed_flags & FIF_CONTROL) {
2841                 if (*total_flags & FIF_CONTROL)
2842                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2843                 else
2844                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2845         }
2846         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2847                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2848                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2849                 else
2850                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2851         }
2852
2853         /* We avoid iwl_commit_rxon here to commit the new filter flags
2854          * since mac80211 will call ieee80211_hw_config immediately.
2855          * (mc_list is not supported at this time). Otherwise, we need to
2856          * queue a background iwl_commit_rxon work.
2857          */
2858
2859         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2860                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2861 }
2862
2863 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2864                                      struct ieee80211_if_init_conf *conf)
2865 {
2866         struct iwl_priv *priv = hw->priv;
2867
2868         IWL_DEBUG_MAC80211("enter\n");
2869
2870         mutex_lock(&priv->mutex);
2871
2872         if (iwl_is_ready_rf(priv)) {
2873                 iwl_scan_cancel_timeout(priv, 100);
2874                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2875                 iwl_commit_rxon(priv);
2876         }
2877         if (priv->vif == conf->vif) {
2878                 priv->vif = NULL;
2879                 memset(priv->bssid, 0, ETH_ALEN);
2880         }
2881         mutex_unlock(&priv->mutex);
2882
2883         IWL_DEBUG_MAC80211("leave\n");
2884
2885 }
2886
2887 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2888 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2889                                      struct ieee80211_vif *vif,
2890                                      struct ieee80211_bss_conf *bss_conf,
2891                                      u32 changes)
2892 {
2893         struct iwl_priv *priv = hw->priv;
2894
2895         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2896
2897         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2898                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2899                                    bss_conf->use_short_preamble);
2900                 if (bss_conf->use_short_preamble)
2901                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2902                 else
2903                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2904         }
2905
2906         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2907                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2908                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2909                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2910                 else
2911                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2912         }
2913
2914         if (changes & BSS_CHANGED_HT) {
2915                 iwl_ht_conf(priv, bss_conf);
2916                 iwl_set_rxon_chain(priv);
2917         }
2918
2919         if (changes & BSS_CHANGED_ASSOC) {
2920                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2921                 /* This should never happen as this function should
2922                  * never be called from interrupt context. */
2923                 if (WARN_ON_ONCE(in_interrupt()))
2924                         return;
2925                 if (bss_conf->assoc) {
2926                         priv->assoc_id = bss_conf->aid;
2927                         priv->beacon_int = bss_conf->beacon_int;
2928                         priv->power_data.dtim_period = bss_conf->dtim_period;
2929                         priv->timestamp = bss_conf->timestamp;
2930                         priv->assoc_capability = bss_conf->assoc_capability;
2931
2932                         /* we have just associated, don't start scan too early
2933                          * leave time for EAPOL exchange to complete
2934                          */
2935                         priv->next_scan_jiffies = jiffies +
2936                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2937                         mutex_lock(&priv->mutex);
2938                         iwl_post_associate(priv);
2939                         mutex_unlock(&priv->mutex);
2940                 } else {
2941                         priv->assoc_id = 0;
2942                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2943                 }
2944         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2945                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2946                         iwl_send_rxon_assoc(priv);
2947         }
2948
2949 }
2950
2951 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2952 {
2953         unsigned long flags;
2954         struct iwl_priv *priv = hw->priv;
2955         int ret;
2956
2957         IWL_DEBUG_MAC80211("enter\n");
2958
2959         mutex_lock(&priv->mutex);
2960         spin_lock_irqsave(&priv->lock, flags);
2961
2962         if (!iwl_is_ready_rf(priv)) {
2963                 ret = -EIO;
2964                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2965                 goto out_unlock;
2966         }
2967
2968         /* We don't schedule scan within next_scan_jiffies period.
2969          * Avoid scanning during possible EAPOL exchange, return
2970          * success immediately.
2971          */
2972         if (priv->next_scan_jiffies &&
2973             time_after(priv->next_scan_jiffies, jiffies)) {
2974                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2975                 queue_work(priv->workqueue, &priv->scan_completed);
2976                 ret = 0;
2977                 goto out_unlock;
2978         }
2979
2980         /* if we just finished scan ask for delay */
2981         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2982             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2983                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2984                 queue_work(priv->workqueue, &priv->scan_completed);
2985                 ret = 0;
2986                 goto out_unlock;
2987         }
2988
2989         if (ssid_len) {
2990                 priv->one_direct_scan = 1;
2991                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2992                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2993         } else {
2994                 priv->one_direct_scan = 0;
2995         }
2996
2997         ret = iwl_scan_initiate(priv);
2998
2999         IWL_DEBUG_MAC80211("leave\n");
3000
3001 out_unlock:
3002         spin_unlock_irqrestore(&priv->lock, flags);
3003         mutex_unlock(&priv->mutex);
3004
3005         return ret;
3006 }
3007
3008 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3009                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3010                         u32 iv32, u16 *phase1key)
3011 {
3012
3013         struct iwl_priv *priv = hw->priv;
3014         IWL_DEBUG_MAC80211("enter\n");
3015
3016         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3017
3018         IWL_DEBUG_MAC80211("leave\n");
3019 }
3020
3021 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3022                            const u8 *local_addr, const u8 *addr,
3023                            struct ieee80211_key_conf *key)
3024 {
3025         struct iwl_priv *priv = hw->priv;
3026         int ret = 0;
3027         u8 sta_id = IWL_INVALID_STATION;
3028         u8 is_default_wep_key = 0;
3029
3030         IWL_DEBUG_MAC80211("enter\n");
3031
3032         if (priv->hw_params.sw_crypto) {
3033                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3034                 return -EOPNOTSUPP;
3035         }
3036
3037         if (is_zero_ether_addr(addr))
3038                 /* only support pairwise keys */
3039                 return -EOPNOTSUPP;
3040
3041         sta_id = iwl_find_station(priv, addr);
3042         if (sta_id == IWL_INVALID_STATION) {
3043                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3044                                    addr);
3045                 return -EINVAL;
3046
3047         }
3048
3049         mutex_lock(&priv->mutex);
3050         iwl_scan_cancel_timeout(priv, 100);
3051         mutex_unlock(&priv->mutex);
3052
3053         /* If we are getting WEP group key and we didn't receive any key mapping
3054          * so far, we are in legacy wep mode (group key only), otherwise we are
3055          * in 1X mode.
3056          * In legacy wep mode, we use another host command to the uCode */
3057         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3058                 priv->iw_mode != NL80211_IFTYPE_AP) {
3059                 if (cmd == SET_KEY)
3060                         is_default_wep_key = !priv->key_mapping_key;
3061                 else
3062                         is_default_wep_key =
3063                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3064         }
3065
3066         switch (cmd) {
3067         case SET_KEY:
3068                 if (is_default_wep_key)
3069                         ret = iwl_set_default_wep_key(priv, key);
3070                 else
3071                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3072
3073                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3074                 break;
3075         case DISABLE_KEY:
3076                 if (is_default_wep_key)
3077                         ret = iwl_remove_default_wep_key(priv, key);
3078                 else
3079                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3080
3081                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3082                 break;
3083         default:
3084                 ret = -EINVAL;
3085         }
3086
3087         IWL_DEBUG_MAC80211("leave\n");
3088
3089         return ret;
3090 }
3091
3092 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3093                            const struct ieee80211_tx_queue_params *params)
3094 {
3095         struct iwl_priv *priv = hw->priv;
3096         unsigned long flags;
3097         int q;
3098
3099         IWL_DEBUG_MAC80211("enter\n");
3100
3101         if (!iwl_is_ready_rf(priv)) {
3102                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3103                 return -EIO;
3104         }
3105
3106         if (queue >= AC_NUM) {
3107                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3108                 return 0;
3109         }
3110
3111         q = AC_NUM - 1 - queue;
3112
3113         spin_lock_irqsave(&priv->lock, flags);
3114
3115         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3116         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3117         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3118         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3119                         cpu_to_le16((params->txop * 32));
3120
3121         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3122         priv->qos_data.qos_active = 1;
3123
3124         if (priv->iw_mode == NL80211_IFTYPE_AP)
3125                 iwl_activate_qos(priv, 1);
3126         else if (priv->assoc_id && iwl_is_associated(priv))
3127                 iwl_activate_qos(priv, 0);
3128
3129         spin_unlock_irqrestore(&priv->lock, flags);
3130
3131         IWL_DEBUG_MAC80211("leave\n");
3132         return 0;
3133 }
3134
3135 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3136                              enum ieee80211_ampdu_mlme_action action,
3137                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3138 {
3139         struct iwl_priv *priv = hw->priv;
3140
3141         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3142                      sta->addr, tid);
3143
3144         if (!(priv->cfg->sku & IWL_SKU_N))
3145                 return -EACCES;
3146
3147         switch (action) {
3148         case IEEE80211_AMPDU_RX_START:
3149                 IWL_DEBUG_HT("start Rx\n");
3150                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3151         case IEEE80211_AMPDU_RX_STOP:
3152                 IWL_DEBUG_HT("stop Rx\n");
3153                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3154         case IEEE80211_AMPDU_TX_START:
3155                 IWL_DEBUG_HT("start Tx\n");
3156                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3157         case IEEE80211_AMPDU_TX_STOP:
3158                 IWL_DEBUG_HT("stop Tx\n");
3159                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3160         default:
3161                 IWL_DEBUG_HT("unknown\n");
3162                 return -EINVAL;
3163                 break;
3164         }
3165         return 0;
3166 }
3167
3168 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3169                                 struct ieee80211_tx_queue_stats *stats)
3170 {
3171         struct iwl_priv *priv = hw->priv;
3172         int i, avail;
3173         struct iwl_tx_queue *txq;
3174         struct iwl_queue *q;
3175         unsigned long flags;
3176
3177         IWL_DEBUG_MAC80211("enter\n");
3178
3179         if (!iwl_is_ready_rf(priv)) {
3180                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3181                 return -EIO;
3182         }
3183
3184         spin_lock_irqsave(&priv->lock, flags);
3185
3186         for (i = 0; i < AC_NUM; i++) {
3187                 txq = &priv->txq[i];
3188                 q = &txq->q;
3189                 avail = iwl_queue_space(q);
3190
3191                 stats[i].len = q->n_window - avail;
3192                 stats[i].limit = q->n_window - q->high_mark;
3193                 stats[i].count = q->n_window;
3194
3195         }
3196         spin_unlock_irqrestore(&priv->lock, flags);
3197
3198         IWL_DEBUG_MAC80211("leave\n");
3199
3200         return 0;
3201 }
3202
3203 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3204                              struct ieee80211_low_level_stats *stats)
3205 {
3206         struct iwl_priv *priv = hw->priv;
3207
3208         priv = hw->priv;
3209         IWL_DEBUG_MAC80211("enter\n");
3210         IWL_DEBUG_MAC80211("leave\n");
3211
3212         return 0;
3213 }
3214
3215 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3216 {
3217         struct iwl_priv *priv = hw->priv;
3218         unsigned long flags;
3219
3220         mutex_lock(&priv->mutex);
3221         IWL_DEBUG_MAC80211("enter\n");
3222
3223         spin_lock_irqsave(&priv->lock, flags);
3224         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3225         spin_unlock_irqrestore(&priv->lock, flags);
3226
3227         iwl_reset_qos(priv);
3228
3229         spin_lock_irqsave(&priv->lock, flags);
3230         priv->assoc_id = 0;
3231         priv->assoc_capability = 0;
3232         priv->assoc_station_added = 0;
3233
3234         /* new association get rid of ibss beacon skb */
3235         if (priv->ibss_beacon)
3236                 dev_kfree_skb(priv->ibss_beacon);
3237
3238         priv->ibss_beacon = NULL;
3239
3240         priv->beacon_int = priv->hw->conf.beacon_int;
3241         priv->timestamp = 0;
3242         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3243                 priv->beacon_int = 0;
3244
3245         spin_unlock_irqrestore(&priv->lock, flags);
3246
3247         if (!iwl_is_ready_rf(priv)) {
3248                 IWL_DEBUG_MAC80211("leave - not ready\n");
3249                 mutex_unlock(&priv->mutex);
3250                 return;
3251         }
3252
3253         /* we are restarting association process
3254          * clear RXON_FILTER_ASSOC_MSK bit
3255          */
3256         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3257                 iwl_scan_cancel_timeout(priv, 100);
3258                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3259                 iwl_commit_rxon(priv);
3260         }
3261
3262         iwl_power_update_mode(priv, 0);
3263
3264         /* Per mac80211.h: This is only used in IBSS mode... */
3265         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3266
3267                 /* switch to CAM during association period.
3268                  * the ucode will block any association/authentication
3269                  * frome during assiciation period if it can not hear
3270                  * the AP because of PM. the timer enable PM back is
3271                  * association do not complete
3272                  */
3273                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3274                                                      IEEE80211_CHAN_RADAR))
3275                                 iwl_power_disable_management(priv, 3000);
3276
3277                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3278                 mutex_unlock(&priv->mutex);
3279                 return;
3280         }
3281
3282         iwl_set_rate(priv);
3283
3284         mutex_unlock(&priv->mutex);
3285
3286         IWL_DEBUG_MAC80211("leave\n");
3287 }
3288
3289 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3290 {
3291         struct iwl_priv *priv = hw->priv;
3292         unsigned long flags;
3293         __le64 timestamp;
3294
3295         IWL_DEBUG_MAC80211("enter\n");
3296
3297         if (!iwl_is_ready_rf(priv)) {
3298                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3299                 return -EIO;
3300         }
3301
3302         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3303                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3304                 return -EIO;
3305         }
3306
3307         spin_lock_irqsave(&priv->lock, flags);
3308
3309         if (priv->ibss_beacon)
3310                 dev_kfree_skb(priv->ibss_beacon);
3311
3312         priv->ibss_beacon = skb;
3313
3314         priv->assoc_id = 0;
3315         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3316         priv->timestamp = le64_to_cpu(timestamp);
3317
3318         IWL_DEBUG_MAC80211("leave\n");
3319         spin_unlock_irqrestore(&priv->lock, flags);
3320
3321         iwl_reset_qos(priv);
3322
3323         iwl_post_associate(priv);
3324
3325
3326         return 0;
3327 }
3328
3329 /*****************************************************************************
3330  *
3331  * sysfs attributes
3332  *
3333  *****************************************************************************/
3334
3335 #ifdef CONFIG_IWLWIFI_DEBUG
3336
3337 /*
3338  * The following adds a new attribute to the sysfs representation
3339  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3340  * used for controlling the debug level.
3341  *
3342  * See the level definitions in iwl for details.
3343  */
3344
3345 static ssize_t show_debug_level(struct device *d,
3346                                 struct device_attribute *attr, char *buf)
3347 {
3348         struct iwl_priv *priv = d->driver_data;
3349
3350         return sprintf(buf, "0x%08X\n", priv->debug_level);
3351 }
3352 static ssize_t store_debug_level(struct device *d,
3353                                 struct device_attribute *attr,
3354                                  const char *buf, size_t count)
3355 {
3356         struct iwl_priv *priv = d->driver_data;
3357         unsigned long val;
3358         int ret;
3359
3360         ret = strict_strtoul(buf, 0, &val);
3361         if (ret)
3362                 printk(KERN_INFO DRV_NAME
3363                        ": %s is not in hex or decimal form.\n", buf);
3364         else
3365                 priv->debug_level = val;
3366
3367         return strnlen(buf, count);
3368 }
3369
3370 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3371                         show_debug_level, store_debug_level);
3372
3373
3374 #endif /* CONFIG_IWLWIFI_DEBUG */
3375
3376
3377 static ssize_t show_version(struct device *d,
3378                                 struct device_attribute *attr, char *buf)
3379 {
3380         struct iwl_priv *priv = d->driver_data;
3381         struct iwl_alive_resp *palive = &priv->card_alive;
3382         ssize_t pos = 0;
3383         u16 eeprom_ver;
3384
3385         if (palive->is_valid)
3386                 pos += sprintf(buf + pos,
3387                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3388                                 "fw type: 0x%01X 0x%01X\n",
3389                                 palive->ucode_major, palive->ucode_minor,
3390                                 palive->sw_rev[0], palive->sw_rev[1],
3391                                 palive->ver_type, palive->ver_subtype);
3392         else
3393                 pos += sprintf(buf + pos, "fw not loaded\n");
3394
3395         if (priv->eeprom) {
3396                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3397                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3398                                  eeprom_ver);
3399         } else {
3400                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3401         }
3402
3403         return pos;
3404 }
3405
3406 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3407
3408 static ssize_t show_temperature(struct device *d,
3409                                 struct device_attribute *attr, char *buf)
3410 {
3411         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3412
3413         if (!iwl_is_alive(priv))
3414                 return -EAGAIN;
3415
3416         return sprintf(buf, "%d\n", priv->temperature);
3417 }
3418
3419 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3420
3421 static ssize_t show_tx_power(struct device *d,
3422                              struct device_attribute *attr, char *buf)
3423 {
3424         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3425
3426         if (!iwl_is_ready_rf(priv))
3427                 return sprintf(buf, "off\n");
3428         else
3429                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3430 }
3431
3432 static ssize_t store_tx_power(struct device *d,
3433                               struct device_attribute *attr,
3434                               const char *buf, size_t count)
3435 {
3436         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3437         unsigned long val;
3438         int ret;
3439
3440         ret = strict_strtoul(buf, 10, &val);
3441         if (ret)
3442                 printk(KERN_INFO DRV_NAME
3443                        ": %s is not in decimal form.\n", buf);
3444         else
3445                 iwl_set_tx_power(priv, val, false);
3446
3447         return count;
3448 }
3449
3450 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3451
3452 static ssize_t show_flags(struct device *d,
3453                           struct device_attribute *attr, char *buf)
3454 {
3455         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3456
3457         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3458 }
3459
3460 static ssize_t store_flags(struct device *d,
3461                            struct device_attribute *attr,
3462                            const char *buf, size_t count)
3463 {
3464         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3465         unsigned long val;
3466         u32 flags;
3467         int ret = strict_strtoul(buf, 0, &val);
3468         if (ret)
3469                 return ret;
3470         flags = (u32)val;
3471
3472         mutex_lock(&priv->mutex);
3473         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3474                 /* Cancel any currently running scans... */
3475                 if (iwl_scan_cancel_timeout(priv, 100))
3476                         IWL_WARNING("Could not cancel scan.\n");
3477                 else {
3478                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3479                         priv->staging_rxon.flags = cpu_to_le32(flags);
3480                         iwl_commit_rxon(priv);
3481                 }
3482         }
3483         mutex_unlock(&priv->mutex);
3484
3485         return count;
3486 }
3487
3488 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3489
3490 static ssize_t show_filter_flags(struct device *d,
3491                                  struct device_attribute *attr, char *buf)
3492 {
3493         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3494
3495         return sprintf(buf, "0x%04X\n",
3496                 le32_to_cpu(priv->active_rxon.filter_flags));
3497 }
3498
3499 static ssize_t store_filter_flags(struct device *d,
3500                                   struct device_attribute *attr,
3501                                   const char *buf, size_t count)
3502 {
3503         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3504         unsigned long val;
3505         u32 filter_flags;
3506         int ret = strict_strtoul(buf, 0, &val);
3507         if (ret)
3508                 return ret;
3509         filter_flags = (u32)val;
3510
3511         mutex_lock(&priv->mutex);
3512         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3513                 /* Cancel any currently running scans... */
3514                 if (iwl_scan_cancel_timeout(priv, 100))
3515                         IWL_WARNING("Could not cancel scan.\n");
3516                 else {
3517                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3518                                        "0x%04X\n", filter_flags);
3519                         priv->staging_rxon.filter_flags =
3520                                 cpu_to_le32(filter_flags);
3521                         iwl_commit_rxon(priv);
3522                 }
3523         }
3524         mutex_unlock(&priv->mutex);
3525
3526         return count;
3527 }
3528
3529 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3530                    store_filter_flags);
3531
3532 static ssize_t store_retry_rate(struct device *d,
3533                                 struct device_attribute *attr,
3534                                 const char *buf, size_t count)
3535 {
3536         struct iwl_priv *priv = dev_get_drvdata(d);
3537         long val;
3538         int ret  = strict_strtol(buf, 10, &val);
3539         if (!ret)
3540                 return ret;
3541
3542         priv->retry_rate = (val > 0) ? val : 1;
3543
3544         return count;
3545 }
3546
3547 static ssize_t show_retry_rate(struct device *d,
3548                                struct device_attribute *attr, char *buf)
3549 {
3550         struct iwl_priv *priv = dev_get_drvdata(d);
3551         return sprintf(buf, "%d", priv->retry_rate);
3552 }
3553
3554 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3555                    store_retry_rate);
3556
3557 static ssize_t store_power_level(struct device *d,
3558                                  struct device_attribute *attr,
3559                                  const char *buf, size_t count)
3560 {
3561         struct iwl_priv *priv = dev_get_drvdata(d);
3562         int ret;
3563         unsigned long mode;
3564
3565
3566         mutex_lock(&priv->mutex);
3567
3568         if (!iwl_is_ready(priv)) {
3569                 ret = -EAGAIN;
3570                 goto out;
3571         }
3572
3573         ret = strict_strtoul(buf, 10, &mode);
3574         if (ret)
3575                 goto out;
3576
3577         ret = iwl_power_set_user_mode(priv, mode);
3578         if (ret) {
3579                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3580                 goto out;
3581         }
3582         ret = count;
3583
3584  out:
3585         mutex_unlock(&priv->mutex);
3586         return ret;
3587 }
3588
3589 static ssize_t show_power_level(struct device *d,
3590                                 struct device_attribute *attr, char *buf)
3591 {
3592         struct iwl_priv *priv = dev_get_drvdata(d);
3593         int mode = priv->power_data.user_power_setting;
3594         int system = priv->power_data.system_power_setting;
3595         int level = priv->power_data.power_mode;
3596         char *p = buf;
3597
3598         switch (system) {
3599         case IWL_POWER_SYS_AUTO:
3600                 p += sprintf(p, "SYSTEM:auto");
3601                 break;
3602         case IWL_POWER_SYS_AC:
3603                 p += sprintf(p, "SYSTEM:ac");
3604                 break;
3605         case IWL_POWER_SYS_BATTERY:
3606                 p += sprintf(p, "SYSTEM:battery");
3607                 break;
3608         }
3609
3610         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3611                         "fixed" : "auto");
3612         p += sprintf(p, "\tINDEX:%d", level);
3613         p += sprintf(p, "\n");
3614         return p - buf + 1;
3615 }
3616
3617 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3618                    store_power_level);
3619
3620
3621 static ssize_t show_statistics(struct device *d,
3622                                struct device_attribute *attr, char *buf)
3623 {
3624         struct iwl_priv *priv = dev_get_drvdata(d);
3625         u32 size = sizeof(struct iwl_notif_statistics);
3626         u32 len = 0, ofs = 0;
3627         u8 *data = (u8 *)&priv->statistics;
3628         int rc = 0;
3629
3630         if (!iwl_is_alive(priv))
3631                 return -EAGAIN;
3632
3633         mutex_lock(&priv->mutex);
3634         rc = iwl_send_statistics_request(priv, 0);
3635         mutex_unlock(&priv->mutex);
3636
3637         if (rc) {
3638                 len = sprintf(buf,
3639                               "Error sending statistics request: 0x%08X\n", rc);
3640                 return len;
3641         }
3642
3643         while (size && (PAGE_SIZE - len)) {
3644                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3645                                    PAGE_SIZE - len, 1);
3646                 len = strlen(buf);
3647                 if (PAGE_SIZE - len)
3648                         buf[len++] = '\n';
3649
3650                 ofs += 16;
3651                 size -= min(size, 16U);
3652         }
3653
3654         return len;
3655 }
3656
3657 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3658
3659 static ssize_t show_status(struct device *d,
3660                            struct device_attribute *attr, char *buf)
3661 {
3662         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3663         if (!iwl_is_alive(priv))
3664                 return -EAGAIN;
3665         return sprintf(buf, "0x%08x\n", (int)priv->status);
3666 }
3667
3668 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3669
3670 /*****************************************************************************
3671  *
3672  * driver setup and teardown
3673  *
3674  *****************************************************************************/
3675
3676 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3677 {
3678         priv->workqueue = create_workqueue(DRV_NAME);
3679
3680         init_waitqueue_head(&priv->wait_command_queue);
3681
3682         INIT_WORK(&priv->up, iwl_bg_up);
3683         INIT_WORK(&priv->restart, iwl_bg_restart);
3684         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3685         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3686         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3687         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3688         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3689         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3690
3691         iwl_setup_scan_deferred_work(priv);
3692         iwl_setup_power_deferred_work(priv);
3693
3694         if (priv->cfg->ops->lib->setup_deferred_work)
3695                 priv->cfg->ops->lib->setup_deferred_work(priv);
3696
3697         init_timer(&priv->statistics_periodic);
3698         priv->statistics_periodic.data = (unsigned long)priv;
3699         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3700
3701         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3702                      iwl_irq_tasklet, (unsigned long)priv);
3703 }
3704
3705 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3706 {
3707         if (priv->cfg->ops->lib->cancel_deferred_work)
3708                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3709
3710         cancel_delayed_work_sync(&priv->init_alive_start);
3711         cancel_delayed_work(&priv->scan_check);
3712         cancel_delayed_work_sync(&priv->set_power_save);
3713         cancel_delayed_work(&priv->alive_start);
3714         cancel_work_sync(&priv->beacon_update);
3715         del_timer_sync(&priv->statistics_periodic);
3716 }
3717
3718 static struct attribute *iwl_sysfs_entries[] = {
3719         &dev_attr_flags.attr,
3720         &dev_attr_filter_flags.attr,
3721         &dev_attr_power_level.attr,
3722         &dev_attr_retry_rate.attr,
3723         &dev_attr_statistics.attr,
3724         &dev_attr_status.attr,
3725         &dev_attr_temperature.attr,
3726         &dev_attr_tx_power.attr,
3727 #ifdef CONFIG_IWLWIFI_DEBUG
3728         &dev_attr_debug_level.attr,
3729 #endif
3730         &dev_attr_version.attr,
3731
3732         NULL
3733 };
3734
3735 static struct attribute_group iwl_attribute_group = {
3736         .name = NULL,           /* put in device directory */
3737         .attrs = iwl_sysfs_entries,
3738 };
3739
3740 static struct ieee80211_ops iwl_hw_ops = {
3741         .tx = iwl_mac_tx,
3742         .start = iwl_mac_start,
3743         .stop = iwl_mac_stop,
3744         .add_interface = iwl_mac_add_interface,
3745         .remove_interface = iwl_mac_remove_interface,
3746         .config = iwl_mac_config,
3747         .config_interface = iwl_mac_config_interface,
3748         .configure_filter = iwl_configure_filter,
3749         .set_key = iwl_mac_set_key,
3750         .update_tkip_key = iwl_mac_update_tkip_key,
3751         .get_stats = iwl_mac_get_stats,
3752         .get_tx_stats = iwl_mac_get_tx_stats,
3753         .conf_tx = iwl_mac_conf_tx,
3754         .reset_tsf = iwl_mac_reset_tsf,
3755         .bss_info_changed = iwl_bss_info_changed,
3756         .ampdu_action = iwl_mac_ampdu_action,
3757         .hw_scan = iwl_mac_hw_scan
3758 };
3759
3760 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3761 {
3762         int err = 0;
3763         struct iwl_priv *priv;
3764         struct ieee80211_hw *hw;
3765         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3766         unsigned long flags;
3767
3768         /************************
3769          * 1. Allocating HW data
3770          ************************/
3771
3772         /* Disabling hardware scan means that mac80211 will perform scans
3773          * "the hard way", rather than using device's scan. */
3774         if (cfg->mod_params->disable_hw_scan) {
3775                 if (cfg->mod_params->debug & IWL_DL_INFO)
3776                         dev_printk(KERN_DEBUG, &(pdev->dev),
3777                                    "Disabling hw_scan\n");
3778                 iwl_hw_ops.hw_scan = NULL;
3779         }
3780
3781         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3782         if (!hw) {
3783                 err = -ENOMEM;
3784                 goto out;
3785         }
3786         priv = hw->priv;
3787         /* At this point both hw and priv are allocated. */
3788
3789         SET_IEEE80211_DEV(hw, &pdev->dev);
3790
3791         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3792         priv->cfg = cfg;
3793         priv->pci_dev = pdev;
3794
3795 #ifdef CONFIG_IWLWIFI_DEBUG
3796         priv->debug_level = priv->cfg->mod_params->debug;
3797         atomic_set(&priv->restrict_refcnt, 0);
3798 #endif
3799
3800         /**************************
3801          * 2. Initializing PCI bus
3802          **************************/
3803         if (pci_enable_device(pdev)) {
3804                 err = -ENODEV;
3805                 goto out_ieee80211_free_hw;
3806         }
3807
3808         pci_set_master(pdev);
3809
3810         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3811         if (!err)
3812                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3813         if (err) {
3814                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3815                 if (!err)
3816                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3817                 /* both attempts failed: */
3818                 if (err) {
3819                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3820                                 DRV_NAME);
3821                         goto out_pci_disable_device;
3822                 }
3823         }
3824
3825         err = pci_request_regions(pdev, DRV_NAME);
3826         if (err)
3827                 goto out_pci_disable_device;
3828
3829         pci_set_drvdata(pdev, priv);
3830
3831
3832         /***********************
3833          * 3. Read REV register
3834          ***********************/
3835         priv->hw_base = pci_iomap(pdev, 0, 0);
3836         if (!priv->hw_base) {
3837                 err = -ENODEV;
3838                 goto out_pci_release_regions;
3839         }
3840
3841         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3842                 (unsigned long long) pci_resource_len(pdev, 0));
3843         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3844
3845         iwl_hw_detect(priv);
3846         printk(KERN_INFO DRV_NAME
3847                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3848                 priv->cfg->name, priv->hw_rev);
3849
3850         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3851          * PCI Tx retries from interfering with C3 CPU state */
3852         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3853
3854         /* amp init */
3855         err = priv->cfg->ops->lib->apm_ops.init(priv);
3856         if (err < 0) {
3857                 IWL_DEBUG_INFO("Failed to init APMG\n");
3858                 goto out_iounmap;
3859         }
3860         /*****************
3861          * 4. Read EEPROM
3862          *****************/
3863         /* Read the EEPROM */
3864         err = iwl_eeprom_init(priv);
3865         if (err) {
3866                 IWL_ERROR("Unable to init EEPROM\n");
3867                 goto out_iounmap;
3868         }
3869         err = iwl_eeprom_check_version(priv);
3870         if (err)
3871                 goto out_free_eeprom;
3872
3873         /* extract MAC Address */
3874         iwl_eeprom_get_mac(priv, priv->mac_addr);
3875         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3876         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3877
3878         /************************
3879          * 5. Setup HW constants
3880          ************************/
3881         if (iwl_set_hw_params(priv)) {
3882                 IWL_ERROR("failed to set hw parameters\n");
3883                 goto out_free_eeprom;
3884         }
3885
3886         /*******************
3887          * 6. Setup priv
3888          *******************/
3889
3890         err = iwl_init_drv(priv);
3891         if (err)
3892                 goto out_free_eeprom;
3893         /* At this point both hw and priv are initialized. */
3894
3895         /**********************************
3896          * 7. Initialize module parameters
3897          **********************************/
3898
3899         /* Disable radio (SW RF KILL) via parameter when loading driver */
3900         if (priv->cfg->mod_params->disable) {
3901                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3902                 IWL_DEBUG_INFO("Radio disabled.\n");
3903         }
3904
3905         /********************
3906          * 8. Setup services
3907          ********************/
3908         spin_lock_irqsave(&priv->lock, flags);
3909         iwl_disable_interrupts(priv);
3910         spin_unlock_irqrestore(&priv->lock, flags);
3911
3912         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3913         if (err) {
3914                 IWL_ERROR("failed to create sysfs device attributes\n");
3915                 goto out_uninit_drv;
3916         }
3917
3918
3919         iwl_setup_deferred_work(priv);
3920         iwl_setup_rx_handlers(priv);
3921
3922         /********************
3923          * 9. Conclude
3924          ********************/
3925         pci_save_state(pdev);
3926         pci_disable_device(pdev);
3927
3928         /**********************************
3929          * 10. Setup and register mac80211
3930          **********************************/
3931
3932         err = iwl_setup_mac(priv);
3933         if (err)
3934                 goto out_remove_sysfs;
3935
3936         err = iwl_dbgfs_register(priv, DRV_NAME);
3937         if (err)
3938                 IWL_ERROR("failed to create debugfs files\n");
3939
3940         err = iwl_rfkill_init(priv);
3941         if (err)
3942                 IWL_ERROR("Unable to initialize RFKILL system. "
3943                                   "Ignoring error: %d\n", err);
3944         iwl_power_initialize(priv);
3945         return 0;
3946
3947  out_remove_sysfs:
3948         destroy_workqueue(priv->workqueue);
3949         priv->workqueue = NULL;
3950         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3951  out_uninit_drv:
3952         iwl_uninit_drv(priv);
3953  out_free_eeprom:
3954         iwl_eeprom_free(priv);
3955  out_iounmap:
3956         pci_iounmap(pdev, priv->hw_base);
3957  out_pci_release_regions:
3958         pci_set_drvdata(pdev, NULL);
3959         pci_release_regions(pdev);
3960  out_pci_disable_device:
3961         pci_disable_device(pdev);
3962  out_ieee80211_free_hw:
3963         ieee80211_free_hw(priv->hw);
3964  out:
3965         return err;
3966 }
3967
3968 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3969 {
3970         struct iwl_priv *priv = pci_get_drvdata(pdev);
3971         unsigned long flags;
3972
3973         if (!priv)
3974                 return;
3975
3976         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3977
3978         iwl_dbgfs_unregister(priv);
3979         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3980
3981         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3982          * to be called and iwl_down since we are removing the device
3983          * we need to set STATUS_EXIT_PENDING bit.
3984          */
3985         set_bit(STATUS_EXIT_PENDING, &priv->status);
3986         if (priv->mac80211_registered) {
3987                 ieee80211_unregister_hw(priv->hw);
3988                 priv->mac80211_registered = 0;
3989         } else {
3990                 iwl_down(priv);
3991         }
3992
3993         /* make sure we flush any pending irq or
3994          * tasklet for the driver
3995          */
3996         spin_lock_irqsave(&priv->lock, flags);
3997         iwl_disable_interrupts(priv);
3998         spin_unlock_irqrestore(&priv->lock, flags);
3999
4000         iwl_synchronize_irq(priv);
4001
4002         iwl_rfkill_unregister(priv);
4003         iwl_dealloc_ucode_pci(priv);
4004
4005         if (priv->rxq.bd)
4006                 iwl_rx_queue_free(priv, &priv->rxq);
4007         iwl_hw_txq_ctx_free(priv);
4008
4009         iwl_clear_stations_table(priv);
4010         iwl_eeprom_free(priv);
4011
4012
4013         /*netif_stop_queue(dev); */
4014         flush_workqueue(priv->workqueue);
4015
4016         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4017          * priv->workqueue... so we can't take down the workqueue
4018          * until now... */
4019         destroy_workqueue(priv->workqueue);
4020         priv->workqueue = NULL;
4021
4022         pci_iounmap(pdev, priv->hw_base);
4023         pci_release_regions(pdev);
4024         pci_disable_device(pdev);
4025         pci_set_drvdata(pdev, NULL);
4026
4027         iwl_uninit_drv(priv);
4028
4029         if (priv->ibss_beacon)
4030                 dev_kfree_skb(priv->ibss_beacon);
4031
4032         ieee80211_free_hw(priv->hw);
4033 }
4034
4035 #ifdef CONFIG_PM
4036
4037 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4038 {
4039         struct iwl_priv *priv = pci_get_drvdata(pdev);
4040
4041         if (priv->is_open) {
4042                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4043                 iwl_mac_stop(priv->hw);
4044                 priv->is_open = 1;
4045         }
4046
4047         /* pci driver assumes state will be saved in this function.
4048          * pci state is saved and device disabled when interface is
4049          * stopped, so at this time pci device will always be disabled -
4050          * whether interface was started or not. saving pci state now will
4051          * cause saved state be that of a disabled device, which will cause
4052          * problems during resume in that we will end up with a disabled device.
4053          *
4054          * indicate that the current saved state (from when interface was
4055          * stopped) is valid. if interface was never up at time of suspend
4056          * then the saved state will still be valid as it was saved during
4057          * .probe. */
4058         pdev->state_saved = true;
4059
4060         pci_set_power_state(pdev, PCI_D3hot);
4061
4062         return 0;
4063 }
4064
4065 static int iwl_pci_resume(struct pci_dev *pdev)
4066 {
4067         struct iwl_priv *priv = pci_get_drvdata(pdev);
4068
4069         pci_set_power_state(pdev, PCI_D0);
4070
4071         if (priv->is_open)
4072                 iwl_mac_start(priv->hw);
4073
4074         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4075         return 0;
4076 }
4077
4078 #endif /* CONFIG_PM */
4079
4080 /*****************************************************************************
4081  *
4082  * driver and module entry point
4083  *
4084  *****************************************************************************/
4085
4086 /* Hardware specific file defines the PCI IDs table for that hardware module */
4087 static struct pci_device_id iwl_hw_card_ids[] = {
4088 #ifdef CONFIG_IWL4965
4089         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4090         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4091 #endif /* CONFIG_IWL4965 */
4092 #ifdef CONFIG_IWL5000
4093         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4094         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4095         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4096         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4097         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4098         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4099         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4100         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4101         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4102         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4103 /* 5350 WiFi/WiMax */
4104         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4105         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4106         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4107 /* 5150 Wifi/WiMax */
4108         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4109         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4110 #endif /* CONFIG_IWL5000 */
4111
4112         {0}
4113 };
4114 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4115
4116 static struct pci_driver iwl_driver = {
4117         .name = DRV_NAME,
4118         .id_table = iwl_hw_card_ids,
4119         .probe = iwl_pci_probe,
4120         .remove = __devexit_p(iwl_pci_remove),
4121 #ifdef CONFIG_PM
4122         .suspend = iwl_pci_suspend,
4123         .resume = iwl_pci_resume,
4124 #endif
4125 };
4126
4127 static int __init iwl_init(void)
4128 {
4129
4130         int ret;
4131         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4132         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4133
4134         ret = iwlagn_rate_control_register();
4135         if (ret) {
4136                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4137                 return ret;
4138         }
4139
4140         ret = pci_register_driver(&iwl_driver);
4141         if (ret) {
4142                 IWL_ERROR("Unable to initialize PCI module\n");
4143                 goto error_register;
4144         }
4145
4146         return ret;
4147
4148 error_register:
4149         iwlagn_rate_control_unregister();
4150         return ret;
4151 }
4152
4153 static void __exit iwl_exit(void)
4154 {
4155         pci_unregister_driver(&iwl_driver);
4156         iwlagn_rate_control_unregister();
4157 }
4158
4159 module_exit(iwl_exit);
4160 module_init(iwl_init);