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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2009 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 #define DRV_NAME        "iwlagn"
  48
  49 #include "iwl-eeprom.h"
  50 #include "iwl-dev.h"
  51 #include "iwl-core.h"
  52 #include "iwl-io.h"
  53 #include "iwl-helpers.h"
  54 #include "iwl-sta.h"
  55 #include "iwl-calib.h"
  56
  57
  58 /******************************************************************************
  59  *
  60  * module boiler plate
  61  *
  62  ******************************************************************************/
  63
  64 /*
  65  * module name, copyright, version, etc.
  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);
 183         if (ret) {
 184                 IWL_ERR(priv, "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_ERR(priv, "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_ERR(priv, "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_ERR(priv, "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_ERR(priv, "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_ERR(priv,
 271                                         "Error adding AP address for TX.\n");
 272                                 return -EIO;
 273                         }
 274                         priv->assoc_station_added = 1;
 275                         if (priv->default_wep_key &&
 276                             iwl_send_static_wepkey_cmd(priv, 0))
 277                                 IWL_ERR(priv,
 278                                         "Could not send WEP static key.\n");
 279                 }
 280
 281                 /* Apply the new configuration
 282                  * RXON assoc doesn't clear the station table in uCode,
 283                  */
 284                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 285                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 286                 if (ret) {
 287                         IWL_ERR(priv, "Error setting new RXON (%d)\n", ret);
 288                         return ret;
 289                 }
 290                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 291         }
 292
 293         iwl_init_sensitivity(priv);
 294
 295         /* If we issue a new RXON command which required a tune then we must
 296          * send a new TXPOWER command or we won't be able to Tx any frames */
 297         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 298         if (ret) {
 299                 IWL_ERR(priv, "Error sending TX power (%d)\n", ret);
 300                 return ret;
 301         }
 302
 303         return 0;
 304 }
 305
 306 void iwl_update_chain_flags(struct iwl_priv *priv)
 307 {
 308
 309         iwl_set_rxon_chain(priv);
 310         iwl_commit_rxon(priv);
 311 }
 312
 313 static int iwl_send_bt_config(struct iwl_priv *priv)
 314 {
 315         struct iwl_bt_cmd bt_cmd = {
 316                 .flags = 3,
 317                 .lead_time = 0xAA,
 318                 .max_kill = 1,
 319                 .kill_ack_mask = 0,
 320                 .kill_cts_mask = 0,
 321         };
 322
 323         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 324                                 sizeof(struct iwl_bt_cmd), &bt_cmd);
 325 }
 326
 327 static void iwl_clear_free_frames(struct iwl_priv *priv)
 328 {
 329         struct list_head *element;
 330
 331         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 332                        priv->frames_count);
 333
 334         while (!list_empty(&priv->free_frames)) {
 335                 element = priv->free_frames.next;
 336                 list_del(element);
 337                 kfree(list_entry(element, struct iwl_frame, list));
 338                 priv->frames_count--;
 339         }
 340
 341         if (priv->frames_count) {
 342                 IWL_WARN(priv, "%d frames still in use.  Did we lose one?\n",
 343                             priv->frames_count);
 344                 priv->frames_count = 0;
 345         }
 346 }
 347
 348 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 349 {
 350         struct iwl_frame *frame;
 351         struct list_head *element;
 352         if (list_empty(&priv->free_frames)) {
 353                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 354                 if (!frame) {
 355                         IWL_ERR(priv, "Could not allocate frame!\n");
 356                         return NULL;
 357                 }
 358
 359                 priv->frames_count++;
 360                 return frame;
 361         }
 362
 363         element = priv->free_frames.next;
 364         list_del(element);
 365         return list_entry(element, struct iwl_frame, list);
 366 }
 367
 368 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 369 {
 370         memset(frame, 0, sizeof(*frame));
 371         list_add(&frame->list, &priv->free_frames);
 372 }
 373
 374 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 375                                           struct ieee80211_hdr *hdr,
 376                                           int left)
 377 {
 378         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 379             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 380              (priv->iw_mode != NL80211_IFTYPE_AP)))
 381                 return 0;
 382
 383         if (priv->ibss_beacon->len > left)
 384                 return 0;
 385
 386         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 387
 388         return priv->ibss_beacon->len;
 389 }
 390
 391 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 392 {
 393         int i;
 394         int rate_mask;
 395
 396         /* Set rate mask*/
 397         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 398                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 399         else
 400                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 401
 402         /* Find lowest valid rate */
 403         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 404                                         i = iwl_rates[i].next_ieee) {
 405                 if (rate_mask & (1 << i))
 406                         return iwl_rates[i].plcp;
 407         }
 408
 409         /* No valid rate was found. Assign the lowest one */
 410         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 411                 return IWL_RATE_1M_PLCP;
 412         else
 413                 return IWL_RATE_6M_PLCP;
 414 }
 415
 416 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 417                                        struct iwl_frame *frame, u8 rate)
 418 {
 419         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 420         unsigned int frame_size;
 421
 422         tx_beacon_cmd = &frame->u.beacon;
 423         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 424
 425         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 426         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 427
 428         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 429                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 430
 431         BUG_ON(frame_size > MAX_MPDU_SIZE);
 432         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 433
 434         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 435                 tx_beacon_cmd->tx.rate_n_flags =
 436                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 437         else
 438                 tx_beacon_cmd->tx.rate_n_flags =
 439                         iwl_hw_set_rate_n_flags(rate, 0);
 440
 441         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 442                                      TX_CMD_FLG_TSF_MSK |
 443                                      TX_CMD_FLG_STA_RATE_MSK;
 444
 445         return sizeof(*tx_beacon_cmd) + frame_size;
 446 }
 447 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 448 {
 449         struct iwl_frame *frame;
 450         unsigned int frame_size;
 451         int rc;
 452         u8 rate;
 453
 454         frame = iwl_get_free_frame(priv);
 455
 456         if (!frame) {
 457                 IWL_ERR(priv, "Could not obtain free frame buffer for beacon "
 458                           "command.\n");
 459                 return -ENOMEM;
 460         }
 461
 462         rate = iwl_rate_get_lowest_plcp(priv);
 463
 464         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 465
 466         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 467                               &frame->u.cmd[0]);
 468
 469         iwl_free_frame(priv, frame);
 470
 471         return rc;
 472 }
 473
 474 /******************************************************************************
 475  *
 476  * Misc. internal state and helper functions
 477  *
 478  ******************************************************************************/
 479
 480 static void iwl_ht_conf(struct iwl_priv *priv,
 481                             struct ieee80211_bss_conf *bss_conf)
 482 {
 483         struct ieee80211_sta_ht_cap *ht_conf;
 484         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 485         struct ieee80211_sta *sta;
 486
 487         IWL_DEBUG_MAC80211("enter: \n");
 488
 489         if (!iwl_conf->is_ht)
 490                 return;
 491
 492
 493         /*
 494          * It is totally wrong to base global information on something
 495          * that is valid only when associated, alas, this driver works
 496          * that way and I don't know how to fix it.
 497          */
 498
 499         rcu_read_lock();
 500         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 501         if (!sta) {
 502                 rcu_read_unlock();
 503                 return;
 504         }
 505         ht_conf = &sta->ht_cap;
 506
 507         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 508                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 509         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 510                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 511
 512         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 513         iwl_conf->max_amsdu_size =
 514                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 515
 516         iwl_conf->supported_chan_width =
 517                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 518
 519         /*
 520          * XXX: The HT configuration needs to be moved into iwl_mac_config()
 521          *      to be done there correctly.
 522          */
 523
 524         iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 525         if (conf_is_ht40_minus(&priv->hw->conf))
 526                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_BELOW;
 527         else if (conf_is_ht40_plus(&priv->hw->conf))
 528                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
 529
 530         /* If no above or below channel supplied disable FAT channel */
 531         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 532             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW)
 533                 iwl_conf->supported_chan_width = 0;
 534
 535         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 536
 537         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 538
 539         iwl_conf->tx_chan_width = iwl_conf->supported_chan_width != 0;
 540         iwl_conf->ht_protection =
 541                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 542         iwl_conf->non_GF_STA_present =
 543                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 544
 545         rcu_read_unlock();
 546
 547         IWL_DEBUG_MAC80211("leave\n");
 548 }
 549
 550 /*
 551  * QoS  support
 552 */
 553 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 554 {
 555         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 556                 return;
 557
 558         priv->qos_data.def_qos_parm.qos_flags = 0;
 559
 560         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 561             !priv->qos_data.qos_cap.q_AP.txop_request)
 562                 priv->qos_data.def_qos_parm.qos_flags |=
 563                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 564         if (priv->qos_data.qos_active)
 565                 priv->qos_data.def_qos_parm.qos_flags |=
 566                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 567
 568         if (priv->current_ht_config.is_ht)
 569                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 570
 571         if (force || iwl_is_associated(priv)) {
 572                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 573                                 priv->qos_data.qos_active,
 574                                 priv->qos_data.def_qos_parm.qos_flags);
 575
 576                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 577                                        sizeof(struct iwl_qosparam_cmd),
 578                                        &priv->qos_data.def_qos_parm, NULL);
 579         }
 580 }
 581
 582 #define MAX_UCODE_BEACON_INTERVAL       4096
 583
 584 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 585 {
 586         u16 new_val = 0;
 587         u16 beacon_factor = 0;
 588
 589         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 590                                         / MAX_UCODE_BEACON_INTERVAL;
 591         new_val = beacon_val / beacon_factor;
 592
 593         return new_val;
 594 }
 595
 596 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 597 {
 598         u64 tsf;
 599         s32 interval_tm, rem;
 600         unsigned long flags;
 601         struct ieee80211_conf *conf = NULL;
 602         u16 beacon_int = 0;
 603
 604         conf = ieee80211_get_hw_conf(priv->hw);
 605
 606         spin_lock_irqsave(&priv->lock, flags);
 607         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 608         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 609
 610         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 611                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 612                 priv->rxon_timing.atim_window = 0;
 613         } else {
 614                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 615
 616                 /* TODO: we need to get atim_window from upper stack
 617                  * for now we set to 0 */
 618                 priv->rxon_timing.atim_window = 0;
 619         }
 620
 621         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 622
 623         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 624         interval_tm = beacon_int * 1024;
 625         rem = do_div(tsf, interval_tm);
 626         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 627
 628         spin_unlock_irqrestore(&priv->lock, flags);
 629         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 630                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 631                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 632                         le16_to_cpu(priv->rxon_timing.atim_window));
 633 }
 634
 635 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 636                                    enum ieee80211_band band)
 637 {
 638         if (band == IEEE80211_BAND_5GHZ) {
 639                 priv->staging_rxon.flags &=
 640                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 641                       | RXON_FLG_CCK_MSK);
 642                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 643         } else {
 644                 /* Copied from iwl_post_associate() */
 645                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 646                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 647                 else
 648                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 649
 650                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 651                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 652
 653                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 654                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 655                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 656         }
 657 }
 658
 659 /*
 660  * initialize rxon structure with default values from eeprom
 661  */
 662 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 663 {
 664         const struct iwl_channel_info *ch_info;
 665
 666         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 667
 668         switch (mode) {
 669         case NL80211_IFTYPE_AP:
 670                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 671                 break;
 672
 673         case NL80211_IFTYPE_STATION:
 674                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 675                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 676                 break;
 677
 678         case NL80211_IFTYPE_ADHOC:
 679                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 680                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 681                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 682                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 683                 break;
 684
 685         case NL80211_IFTYPE_MONITOR:
 686                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 687                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 688                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 689                 break;
 690         default:
 691                 IWL_ERR(priv, "Unsupported interface type %d\n", mode);
 692                 break;
 693         }
 694
 695 #if 0
 696         /* TODO:  Figure out when short_preamble would be set and cache from
 697          * that */
 698         if (!hw_to_local(priv->hw)->short_preamble)
 699                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 700         else
 701                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 702 #endif
 703
 704         ch_info = iwl_get_channel_info(priv, priv->band,
 705                                        le16_to_cpu(priv->active_rxon.channel));
 706
 707         if (!ch_info)
 708                 ch_info = &priv->channel_info[0];
 709
 710         /*
 711          * in some case A channels are all non IBSS
 712          * in this case force B/G channel
 713          */
 714         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 715             !(is_channel_ibss(ch_info)))
 716                 ch_info = &priv->channel_info[0];
 717
 718         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 719         priv->band = ch_info->band;
 720
 721         iwl_set_flags_for_band(priv, priv->band);
 722
 723         priv->staging_rxon.ofdm_basic_rates =
 724             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 725         priv->staging_rxon.cck_basic_rates =
 726             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 727
 728         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 729                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 730         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 731         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 732         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 733         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 734         iwl_set_rxon_chain(priv);
 735 }
 736
 737 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 738 {
 739         iwl_connection_init_rx_config(priv, mode);
 740         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 741
 742         iwl_clear_stations_table(priv);
 743
 744         /* dont commit rxon if rf-kill is on*/
 745         if (!iwl_is_ready_rf(priv))
 746                 return -EAGAIN;
 747
 748         cancel_delayed_work(&priv->scan_check);
 749         if (iwl_scan_cancel_timeout(priv, 100)) {
 750                 IWL_WARN(priv, "Aborted scan still in progress after 100ms\n");
 751                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 752                 return -EAGAIN;
 753         }
 754
 755         iwl_commit_rxon(priv);
 756
 757         return 0;
 758 }
 759
 760 static void iwl_set_rate(struct iwl_priv *priv)
 761 {
 762         const struct ieee80211_supported_band *hw = NULL;
 763         struct ieee80211_rate *rate;
 764         int i;
 765
 766         hw = iwl_get_hw_mode(priv, priv->band);
 767         if (!hw) {
 768                 IWL_ERR(priv, "Failed to set rate: unable to get hw mode\n");
 769                 return;
 770         }
 771
 772         priv->active_rate = 0;
 773         priv->active_rate_basic = 0;
 774
 775         for (i = 0; i < hw->n_bitrates; i++) {
 776                 rate = &(hw->bitrates[i]);
 777                 if (rate->hw_value < IWL_RATE_COUNT)
 778                         priv->active_rate |= (1 << rate->hw_value);
 779         }
 780
 781         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 782                        priv->active_rate, priv->active_rate_basic);
 783
 784         /*
 785          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 786          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 787          * OFDM
 788          */
 789         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 790                 priv->staging_rxon.cck_basic_rates =
 791                     ((priv->active_rate_basic &
 792                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 793         else
 794                 priv->staging_rxon.cck_basic_rates =
 795                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 796
 797         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 798                 priv->staging_rxon.ofdm_basic_rates =
 799                     ((priv->active_rate_basic &
 800                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 801                       IWL_FIRST_OFDM_RATE) & 0xFF;
 802         else
 803                 priv->staging_rxon.ofdm_basic_rates =
 804                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 805 }
 806
 807
 808 /******************************************************************************
 809  *
 810  * Generic RX handler implementations
 811  *
 812  ******************************************************************************/
 813 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 814                                 struct iwl_rx_mem_buffer *rxb)
 815 {
 816         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 817         struct iwl_alive_resp *palive;
 818         struct delayed_work *pwork;
 819
 820         palive = &pkt->u.alive_frame;
 821
 822         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 823                        "0x%01X 0x%01X\n",
 824                        palive->is_valid, palive->ver_type,
 825                        palive->ver_subtype);
 826
 827         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 828                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 829                 memcpy(&priv->card_alive_init,
 830                        &pkt->u.alive_frame,
 831                        sizeof(struct iwl_init_alive_resp));
 832                 pwork = &priv->init_alive_start;
 833         } else {
 834                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 835                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 836                        sizeof(struct iwl_alive_resp));
 837                 pwork = &priv->alive_start;
 838         }
 839
 840         /* We delay the ALIVE response by 5ms to
 841          * give the HW RF Kill time to activate... */
 842         if (palive->is_valid == UCODE_VALID_OK)
 843                 queue_delayed_work(priv->workqueue, pwork,
 844                                    msecs_to_jiffies(5));
 845         else
 846                 IWL_WARN(priv, "uCode did not respond OK.\n");
 847 }
 848
 849 static void iwl_rx_reply_error(struct iwl_priv *priv,
 850                                    struct iwl_rx_mem_buffer *rxb)
 851 {
 852         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 853
 854         IWL_ERR(priv, "Error Reply type 0x%08X cmd %s (0x%02X) "
 855                 "seq 0x%04X ser 0x%08X\n",
 856                 le32_to_cpu(pkt->u.err_resp.error_type),
 857                 get_cmd_string(pkt->u.err_resp.cmd_id),
 858                 pkt->u.err_resp.cmd_id,
 859                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 860                 le32_to_cpu(pkt->u.err_resp.error_info));
 861 }
 862
 863 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 864
 865 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 866 {
 867         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 868         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 869         struct iwl_csa_notification *csa = &(pkt->u.csa_notif);
 870         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 871                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 872         rxon->channel = csa->channel;
 873         priv->staging_rxon.channel = csa->channel;
 874 }
 875
 876 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 877                                       struct iwl_rx_mem_buffer *rxb)
 878 {
 879 #ifdef CONFIG_IWLWIFI_DEBUG
 880         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 881         struct iwl_sleep_notification *sleep = &(pkt->u.sleep_notif);
 882         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 883                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 884 #endif
 885 }
 886
 887 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 888                                              struct iwl_rx_mem_buffer *rxb)
 889 {
 890         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 891         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 892                         "notification for %s:\n",
 893                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 894         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 895 }
 896
 897 static void iwl_bg_beacon_update(struct work_struct *work)
 898 {
 899         struct iwl_priv *priv =
 900                 container_of(work, struct iwl_priv, beacon_update);
 901         struct sk_buff *beacon;
 902
 903         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 904         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 905
 906         if (!beacon) {
 907                 IWL_ERR(priv, "update beacon failed\n");
 908                 return;
 909         }
 910
 911         mutex_lock(&priv->mutex);
 912         /* new beacon skb is allocated every time; dispose previous.*/
 913         if (priv->ibss_beacon)
 914                 dev_kfree_skb(priv->ibss_beacon);
 915
 916         priv->ibss_beacon = beacon;
 917         mutex_unlock(&priv->mutex);
 918
 919         iwl_send_beacon_cmd(priv);
 920 }
 921
 922 /**
 923  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 924  *
 925  * This callback is provided in order to send a statistics request.
 926  *
 927  * This timer function is continually reset to execute within
 928  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 929  * was received.  We need to ensure we receive the statistics in order
 930  * to update the temperature used for calibrating the TXPOWER.
 931  */
 932 static void iwl_bg_statistics_periodic(unsigned long data)
 933 {
 934         struct iwl_priv *priv = (struct iwl_priv *)data;
 935
 936         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 937                 return;
 938
 939         /* dont send host command if rf-kill is on */
 940         if (!iwl_is_ready_rf(priv))
 941                 return;
 942
 943         iwl_send_statistics_request(priv, CMD_ASYNC);
 944 }
 945
 946 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
 947                                 struct iwl_rx_mem_buffer *rxb)
 948 {
 949 #ifdef CONFIG_IWLWIFI_DEBUG
 950         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 951         struct iwl4965_beacon_notif *beacon =
 952                 (struct iwl4965_beacon_notif *)pkt->u.raw;
 953         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
 954
 955         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
 956                 "tsf %d %d rate %d\n",
 957                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
 958                 beacon->beacon_notify_hdr.failure_frame,
 959                 le32_to_cpu(beacon->ibss_mgr_status),
 960                 le32_to_cpu(beacon->high_tsf),
 961                 le32_to_cpu(beacon->low_tsf), rate);
 962 #endif
 963
 964         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
 965             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
 966                 queue_work(priv->workqueue, &priv->beacon_update);
 967 }
 968
 969 /* Handle notification from uCode that card's power state is changing
 970  * due to software, hardware, or critical temperature RFKILL */
 971 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
 972                                     struct iwl_rx_mem_buffer *rxb)
 973 {
 974         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 975         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
 976         unsigned long status = priv->status;
 977
 978         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
 979                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
 980                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
 981
 982         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
 983                      RF_CARD_DISABLED)) {
 984
 985                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 986                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 987
 988                 if (!iwl_grab_nic_access(priv)) {
 989                         iwl_write_direct32(
 990                                 priv, HBUS_TARG_MBX_C,
 991                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
 992
 993                         iwl_release_nic_access(priv);
 994                 }
 995
 996                 if (!(flags & RXON_CARD_DISABLED)) {
 997                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
 998                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
 999                         if (!iwl_grab_nic_access(priv)) {
1000                                 iwl_write_direct32(
1001                                         priv, HBUS_TARG_MBX_C,
1002                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1003
1004                                 iwl_release_nic_access(priv);
1005                         }
1006                 }
1007
1008                 if (flags & RF_CARD_DISABLED) {
1009                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1010                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1011                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1012                         if (!iwl_grab_nic_access(priv))
1013                                 iwl_release_nic_access(priv);
1014                 }
1015         }
1016
1017         if (flags & HW_CARD_DISABLED)
1018                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1019         else
1020                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1021
1022
1023         if (flags & SW_CARD_DISABLED)
1024                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1025         else
1026                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1027
1028         if (!(flags & RXON_CARD_DISABLED))
1029                 iwl_scan_cancel(priv);
1030
1031         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1032              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1033             (test_bit(STATUS_RF_KILL_SW, &status) !=
1034              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1035                 queue_work(priv->workqueue, &priv->rf_kill);
1036         else
1037                 wake_up_interruptible(&priv->wait_command_queue);
1038 }
1039
1040 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1041 {
1042         int ret;
1043         unsigned long flags;
1044
1045         spin_lock_irqsave(&priv->lock, flags);
1046         ret = iwl_grab_nic_access(priv);
1047         if (ret)
1048                 goto err;
1049
1050         if (src == IWL_PWR_SRC_VAUX) {
1051                 u32 val;
1052                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1053                                             &val);
1054
1055                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1056                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1057                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1058                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1059         } else {
1060                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1061                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1062                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1063         }
1064
1065         iwl_release_nic_access(priv);
1066 err:
1067         spin_unlock_irqrestore(&priv->lock, flags);
1068         return ret;
1069 }
1070
1071 /**
1072  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1073  *
1074  * Setup the RX handlers for each of the reply types sent from the uCode
1075  * to the host.
1076  *
1077  * This function chains into the hardware specific files for them to setup
1078  * any hardware specific handlers as well.
1079  */
1080 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1081 {
1082         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1083         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1084         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1085         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1086         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1087             iwl_rx_pm_debug_statistics_notif;
1088         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1089
1090         /*
1091          * The same handler is used for both the REPLY to a discrete
1092          * statistics request from the host as well as for the periodic
1093          * statistics notifications (after received beacons) from the uCode.
1094          */
1095         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1096         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1097
1098         iwl_setup_spectrum_handlers(priv);
1099         iwl_setup_rx_scan_handlers(priv);
1100
1101         /* status change handler */
1102         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1103
1104         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1105             iwl_rx_missed_beacon_notif;
1106         /* Rx handlers */
1107         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1108         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1109         /* block ack */
1110         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1111         /* Set up hardware specific Rx handlers */
1112         priv->cfg->ops->lib->rx_handler_setup(priv);
1113 }
1114
1115 /**
1116  * iwl_rx_handle - Main entry function for receiving responses from uCode
1117  *
1118  * Uses the priv->rx_handlers callback function array to invoke
1119  * the appropriate handlers, including command responses,
1120  * frame-received notifications, and other notifications.
1121  */
1122 void iwl_rx_handle(struct iwl_priv *priv)
1123 {
1124         struct iwl_rx_mem_buffer *rxb;
1125         struct iwl_rx_packet *pkt;
1126         struct iwl_rx_queue *rxq = &priv->rxq;
1127         u32 r, i;
1128         int reclaim;
1129         unsigned long flags;
1130         u8 fill_rx = 0;
1131         u32 count = 8;
1132
1133         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1134          * buffer that the driver may process (last buffer filled by ucode). */
1135         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1136         i = rxq->read;
1137
1138         /* Rx interrupt, but nothing sent from uCode */
1139         if (i == r)
1140                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1141
1142         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1143                 fill_rx = 1;
1144
1145         while (i != r) {
1146                 rxb = rxq->queue[i];
1147
1148                 /* If an RXB doesn't have a Rx queue slot associated with it,
1149                  * then a bug has been introduced in the queue refilling
1150                  * routines -- catch it here */
1151                 BUG_ON(rxb == NULL);
1152
1153                 rxq->queue[i] = NULL;
1154
1155                 dma_sync_single_range_for_cpu(
1156                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1157                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1158                                 priv->hw_params.rx_buf_size,
1159                                 PCI_DMA_FROMDEVICE);
1160                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1161
1162                 /* Reclaim a command buffer only if this packet is a response
1163                  *   to a (driver-originated) command.
1164                  * If the packet (e.g. Rx frame) originated from uCode,
1165                  *   there is no command buffer to reclaim.
1166                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1167                  *   but apparently a few don't get set; catch them here. */
1168                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1169                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1170                         (pkt->hdr.cmd != REPLY_RX) &&
1171                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1172                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1173                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1174                         (pkt->hdr.cmd != REPLY_TX);
1175
1176                 /* Based on type of command response or notification,
1177                  *   handle those that need handling via function in
1178                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1179                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1180                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1181                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1182                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1183                 } else {
1184                         /* No handling needed */
1185                         IWL_DEBUG(IWL_DL_RX,
1186                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1187                                 r, i, get_cmd_string(pkt->hdr.cmd),
1188                                 pkt->hdr.cmd);
1189                 }
1190
1191                 if (reclaim) {
1192                         /* Invoke any callbacks, transfer the skb to caller, and
1193                          * fire off the (possibly) blocking iwl_send_cmd()
1194                          * as we reclaim the driver command queue */
1195                         if (rxb && rxb->skb)
1196                                 iwl_tx_cmd_complete(priv, rxb);
1197                         else
1198                                 IWL_WARN(priv, "Claim null rxb?\n");
1199                 }
1200
1201                 /* For now we just don't re-use anything.  We can tweak this
1202                  * later to try and re-use notification packets and SKBs that
1203                  * fail to Rx correctly */
1204                 if (rxb->skb != NULL) {
1205                         priv->alloc_rxb_skb--;
1206                         dev_kfree_skb_any(rxb->skb);
1207                         rxb->skb = NULL;
1208                 }
1209
1210                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1211                                  priv->hw_params.rx_buf_size + 256,
1212                                  PCI_DMA_FROMDEVICE);
1213                 spin_lock_irqsave(&rxq->lock, flags);
1214                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1215                 spin_unlock_irqrestore(&rxq->lock, flags);
1216                 i = (i + 1) & RX_QUEUE_MASK;
1217                 /* If there are a lot of unused frames,
1218                  * restock the Rx queue so ucode wont assert. */
1219                 if (fill_rx) {
1220                         count++;
1221                         if (count >= 8) {
1222                                 priv->rxq.read = i;
1223                                 iwl_rx_queue_restock(priv);
1224                                 count = 0;
1225                         }
1226                 }
1227         }
1228
1229         /* Backtrack one entry */
1230         priv->rxq.read = i;
1231         iwl_rx_queue_restock(priv);
1232 }
1233
1234 #ifdef CONFIG_IWLWIFI_DEBUG
1235 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1236 {
1237         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1238
1239         IWL_DEBUG_RADIO("RX CONFIG:\n");
1240         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1241         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1242         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1243         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1244                         le32_to_cpu(rxon->filter_flags));
1245         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1246         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1247                         rxon->ofdm_basic_rates);
1248         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1249         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1250         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1251         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1252 }
1253 #endif
1254
1255 /* call this function to flush any scheduled tasklet */
1256 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1257 {
1258         /* wait to make sure we flush pending tasklet*/
1259         synchronize_irq(priv->pci_dev->irq);
1260         tasklet_kill(&priv->irq_tasklet);
1261 }
1262
1263 /**
1264  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1265  */
1266 static void iwl_irq_handle_error(struct iwl_priv *priv)
1267 {
1268         /* Set the FW error flag -- cleared on iwl_down */
1269         set_bit(STATUS_FW_ERROR, &priv->status);
1270
1271         /* Cancel currently queued command. */
1272         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1273
1274 #ifdef CONFIG_IWLWIFI_DEBUG
1275         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1276                 iwl_dump_nic_error_log(priv);
1277                 iwl_dump_nic_event_log(priv);
1278                 iwl_print_rx_config_cmd(priv);
1279         }
1280 #endif
1281
1282         wake_up_interruptible(&priv->wait_command_queue);
1283
1284         /* Keep the restart process from trying to send host
1285          * commands by clearing the INIT status bit */
1286         clear_bit(STATUS_READY, &priv->status);
1287
1288         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1289                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1290                           "Restarting adapter due to uCode error.\n");
1291
1292                 if (iwl_is_associated(priv)) {
1293                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1294                                sizeof(priv->recovery_rxon));
1295                         priv->error_recovering = 1;
1296                 }
1297                 if (priv->cfg->mod_params->restart_fw)
1298                         queue_work(priv->workqueue, &priv->restart);
1299         }
1300 }
1301
1302 static void iwl_error_recovery(struct iwl_priv *priv)
1303 {
1304         unsigned long flags;
1305
1306         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1307                sizeof(priv->staging_rxon));
1308         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1309         iwl_commit_rxon(priv);
1310
1311         iwl_rxon_add_station(priv, priv->bssid, 1);
1312
1313         spin_lock_irqsave(&priv->lock, flags);
1314         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1315         priv->error_recovering = 0;
1316         spin_unlock_irqrestore(&priv->lock, flags);
1317 }
1318
1319 static void iwl_irq_tasklet(struct iwl_priv *priv)
1320 {
1321         u32 inta, handled = 0;
1322         u32 inta_fh;
1323         unsigned long flags;
1324 #ifdef CONFIG_IWLWIFI_DEBUG
1325         u32 inta_mask;
1326 #endif
1327
1328         spin_lock_irqsave(&priv->lock, flags);
1329
1330         /* Ack/clear/reset pending uCode interrupts.
1331          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1332          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1333         inta = iwl_read32(priv, CSR_INT);
1334         iwl_write32(priv, CSR_INT, inta);
1335
1336         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1337          * Any new interrupts that happen after this, either while we're
1338          * in this tasklet, or later, will show up in next ISR/tasklet. */
1339         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1340         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1341
1342 #ifdef CONFIG_IWLWIFI_DEBUG
1343         if (priv->debug_level & IWL_DL_ISR) {
1344                 /* just for debug */
1345                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1346                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1347                               inta, inta_mask, inta_fh);
1348         }
1349 #endif
1350
1351         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1352          * atomic, make sure that inta covers all the interrupts that
1353          * we've discovered, even if FH interrupt came in just after
1354          * reading CSR_INT. */
1355         if (inta_fh & CSR49_FH_INT_RX_MASK)
1356                 inta |= CSR_INT_BIT_FH_RX;
1357         if (inta_fh & CSR49_FH_INT_TX_MASK)
1358                 inta |= CSR_INT_BIT_FH_TX;
1359
1360         /* Now service all interrupt bits discovered above. */
1361         if (inta & CSR_INT_BIT_HW_ERR) {
1362                 IWL_ERR(priv, "Microcode HW error detected.  Restarting.\n");
1363
1364                 /* Tell the device to stop sending interrupts */
1365                 iwl_disable_interrupts(priv);
1366
1367                 iwl_irq_handle_error(priv);
1368
1369                 handled |= CSR_INT_BIT_HW_ERR;
1370
1371                 spin_unlock_irqrestore(&priv->lock, flags);
1372
1373                 return;
1374         }
1375
1376 #ifdef CONFIG_IWLWIFI_DEBUG
1377         if (priv->debug_level & (IWL_DL_ISR)) {
1378                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1379                 if (inta & CSR_INT_BIT_SCD)
1380                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1381                                       "the frame/frames.\n");
1382
1383                 /* Alive notification via Rx interrupt will do the real work */
1384                 if (inta & CSR_INT_BIT_ALIVE)
1385                         IWL_DEBUG_ISR("Alive interrupt\n");
1386         }
1387 #endif
1388         /* Safely ignore these bits for debug checks below */
1389         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1390
1391         /* HW RF KILL switch toggled */
1392         if (inta & CSR_INT_BIT_RF_KILL) {
1393                 int hw_rf_kill = 0;
1394                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1395                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1396                         hw_rf_kill = 1;
1397
1398                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1399                                 hw_rf_kill ? "disable radio" : "enable radio");
1400
1401                 /* driver only loads ucode once setting the interface up.
1402                  * the driver as well won't allow loading if RFKILL is set
1403                  * therefore no need to restart the driver from this handler
1404                  */
1405                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1406                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1407                         if (priv->is_open && !iwl_is_rfkill(priv))
1408                                 queue_work(priv->workqueue, &priv->up);
1409                 }
1410
1411                 handled |= CSR_INT_BIT_RF_KILL;
1412         }
1413
1414         /* Chip got too hot and stopped itself */
1415         if (inta & CSR_INT_BIT_CT_KILL) {
1416                 IWL_ERR(priv, "Microcode CT kill error detected.\n");
1417                 handled |= CSR_INT_BIT_CT_KILL;
1418         }
1419
1420         /* Error detected by uCode */
1421         if (inta & CSR_INT_BIT_SW_ERR) {
1422                 IWL_ERR(priv, "Microcode SW error detected. "
1423                         " Restarting 0x%X.\n", inta);
1424                 iwl_irq_handle_error(priv);
1425                 handled |= CSR_INT_BIT_SW_ERR;
1426         }
1427
1428         /* uCode wakes up after power-down sleep */
1429         if (inta & CSR_INT_BIT_WAKEUP) {
1430                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1431                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1432                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1433                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1434                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1435                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1436                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1437                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1438
1439                 handled |= CSR_INT_BIT_WAKEUP;
1440         }
1441
1442         /* All uCode command responses, including Tx command responses,
1443          * Rx "responses" (frame-received notification), and other
1444          * notifications from uCode come through here*/
1445         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1446                 iwl_rx_handle(priv);
1447                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1448         }
1449
1450         if (inta & CSR_INT_BIT_FH_TX) {
1451                 IWL_DEBUG_ISR("Tx interrupt\n");
1452                 handled |= CSR_INT_BIT_FH_TX;
1453                 /* FH finished to write, send event */
1454                 priv->ucode_write_complete = 1;
1455                 wake_up_interruptible(&priv->wait_command_queue);
1456         }
1457
1458         if (inta & ~handled)
1459                 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
1460
1461         if (inta & ~CSR_INI_SET_MASK) {
1462                 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
1463                          inta & ~CSR_INI_SET_MASK);
1464                 IWL_WARN(priv, "   with FH_INT = 0x%08x\n", inta_fh);
1465         }
1466
1467         /* Re-enable all interrupts */
1468         /* only Re-enable if diabled by irq */
1469         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1470                 iwl_enable_interrupts(priv);
1471
1472 #ifdef CONFIG_IWLWIFI_DEBUG
1473         if (priv->debug_level & (IWL_DL_ISR)) {
1474                 inta = iwl_read32(priv, CSR_INT);
1475                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1476                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1477                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1478                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1479         }
1480 #endif
1481         spin_unlock_irqrestore(&priv->lock, flags);
1482 }
1483
1484 static irqreturn_t iwl_isr(int irq, void *data)
1485 {
1486         struct iwl_priv *priv = data;
1487         u32 inta, inta_mask;
1488         u32 inta_fh;
1489         if (!priv)
1490                 return IRQ_NONE;
1491
1492         spin_lock(&priv->lock);
1493
1494         /* Disable (but don't clear!) interrupts here to avoid
1495          *    back-to-back ISRs and sporadic interrupts from our NIC.
1496          * If we have something to service, the tasklet will re-enable ints.
1497          * If we *don't* have something, we'll re-enable before leaving here. */
1498         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1499         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1500
1501         /* Discover which interrupts are active/pending */
1502         inta = iwl_read32(priv, CSR_INT);
1503         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1504
1505         /* Ignore interrupt if there's nothing in NIC to service.
1506          * This may be due to IRQ shared with another device,
1507          * or due to sporadic interrupts thrown from our NIC. */
1508         if (!inta && !inta_fh) {
1509                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1510                 goto none;
1511         }
1512
1513         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1514                 /* Hardware disappeared. It might have already raised
1515                  * an interrupt */
1516                 IWL_WARN(priv, "HARDWARE GONE?? INTA == 0x%08x\n", inta);
1517                 goto unplugged;
1518         }
1519
1520         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1521                       inta, inta_mask, inta_fh);
1522
1523         inta &= ~CSR_INT_BIT_SCD;
1524
1525         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1526         if (likely(inta || inta_fh))
1527                 tasklet_schedule(&priv->irq_tasklet);
1528
1529  unplugged:
1530         spin_unlock(&priv->lock);
1531         return IRQ_HANDLED;
1532
1533  none:
1534         /* re-enable interrupts here since we don't have anything to service. */
1535         /* only Re-enable if diabled by irq */
1536         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1537                 iwl_enable_interrupts(priv);
1538         spin_unlock(&priv->lock);
1539         return IRQ_NONE;
1540 }
1541
1542 /******************************************************************************
1543  *
1544  * uCode download functions
1545  *
1546  ******************************************************************************/
1547
1548 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1549 {
1550         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1551         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1552         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1553         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1554         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1555         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1556 }
1557
1558 static void iwl_nic_start(struct iwl_priv *priv)
1559 {
1560         /* Remove all resets to allow NIC to operate */
1561         iwl_write32(priv, CSR_RESET, 0);
1562 }
1563
1564
1565 /**
1566  * iwl_read_ucode - Read uCode images from disk file.
1567  *
1568  * Copy into buffers for card to fetch via bus-mastering
1569  */
1570 static int iwl_read_ucode(struct iwl_priv *priv)
1571 {
1572         struct iwl_ucode *ucode;
1573         int ret = -EINVAL, index;
1574         const struct firmware *ucode_raw;
1575         const char *name_pre = priv->cfg->fw_name_pre;
1576         const unsigned int api_max = priv->cfg->ucode_api_max;
1577         const unsigned int api_min = priv->cfg->ucode_api_min;
1578         char buf[25];
1579         u8 *src;
1580         size_t len;
1581         u32 api_ver, inst_size, data_size, init_size, init_data_size, boot_size;
1582
1583         /* Ask kernel firmware_class module to get the boot firmware off disk.
1584          * request_firmware() is synchronous, file is in memory on return. */
1585         for (index = api_max; index >= api_min; index--) {
1586                 sprintf(buf, "%s%d%s", name_pre, index, ".ucode");
1587                 ret = request_firmware(&ucode_raw, buf, &priv->pci_dev->dev);
1588                 if (ret < 0) {
1589                         IWL_ERR(priv, "%s firmware file req failed: %d\n",
1590                                   buf, ret);
1591                         if (ret == -ENOENT)
1592                                 continue;
1593                         else
1594                                 goto error;
1595                 } else {
1596                         if (index < api_max)
1597                                 IWL_ERR(priv, "Loaded firmware %s, "
1598                                         "which is deprecated. "
1599                                         "Please use API v%u instead.\n",
1600                                           buf, api_max);
1601
1602                         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1603                                        buf, ucode_raw->size);
1604                         break;
1605                 }
1606         }
1607
1608         if (ret < 0)
1609                 goto error;
1610
1611         /* Make sure that we got at least our header! */
1612         if (ucode_raw->size < sizeof(*ucode)) {
1613                 IWL_ERR(priv, "File size way too small!\n");
1614                 ret = -EINVAL;
1615                 goto err_release;
1616         }
1617
1618         /* Data from ucode file:  header followed by uCode images */
1619         ucode = (void *)ucode_raw->data;
1620
1621         priv->ucode_ver = le32_to_cpu(ucode->ver);
1622         api_ver = IWL_UCODE_API(priv->ucode_ver);
1623         inst_size = le32_to_cpu(ucode->inst_size);
1624         data_size = le32_to_cpu(ucode->data_size);
1625         init_size = le32_to_cpu(ucode->init_size);
1626         init_data_size = le32_to_cpu(ucode->init_data_size);
1627         boot_size = le32_to_cpu(ucode->boot_size);
1628
1629         /* api_ver should match the api version forming part of the
1630          * firmware filename ... but we don't check for that and only rely
1631          * on the API version read from firware header from here on forward */
1632
1633         if (api_ver < api_min || api_ver > api_max) {
1634                 IWL_ERR(priv, "Driver unable to support your firmware API. "
1635                           "Driver supports v%u, firmware is v%u.\n",
1636                           api_max, api_ver);
1637                 priv->ucode_ver = 0;
1638                 ret = -EINVAL;
1639                 goto err_release;
1640         }
1641         if (api_ver != api_max)
1642                 IWL_ERR(priv, "Firmware has old API version. Expected v%u, "
1643                           "got v%u. New firmware can be obtained "
1644                           "from http://www.intellinuxwireless.org.\n",
1645                           api_max, api_ver);
1646
1647         IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u\n",
1648                IWL_UCODE_MAJOR(priv->ucode_ver),
1649                IWL_UCODE_MINOR(priv->ucode_ver),
1650                IWL_UCODE_API(priv->ucode_ver),
1651                IWL_UCODE_SERIAL(priv->ucode_ver));
1652
1653         IWL_DEBUG_INFO("f/w package hdr ucode version raw = 0x%x\n",
1654                        priv->ucode_ver);
1655         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1656                        inst_size);
1657         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1658                        data_size);
1659         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1660                        init_size);
1661         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1662                        init_data_size);
1663         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1664                        boot_size);
1665
1666         /* Verify size of file vs. image size info in file's header */
1667         if (ucode_raw->size < sizeof(*ucode) +
1668                 inst_size + data_size + init_size +
1669                 init_data_size + boot_size) {
1670
1671                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1672                                (int)ucode_raw->size);
1673                 ret = -EINVAL;
1674                 goto err_release;
1675         }
1676
1677         /* Verify that uCode images will fit in card's SRAM */
1678         if (inst_size > priv->hw_params.max_inst_size) {
1679                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1680                                inst_size);
1681                 ret = -EINVAL;
1682                 goto err_release;
1683         }
1684
1685         if (data_size > priv->hw_params.max_data_size) {
1686                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1687                                 data_size);
1688                 ret = -EINVAL;
1689                 goto err_release;
1690         }
1691         if (init_size > priv->hw_params.max_inst_size) {
1692                 IWL_DEBUG_INFO
1693                     ("uCode init instr len %d too large to fit in\n",
1694                       init_size);
1695                 ret = -EINVAL;
1696                 goto err_release;
1697         }
1698         if (init_data_size > priv->hw_params.max_data_size) {
1699                 IWL_DEBUG_INFO
1700                     ("uCode init data len %d too large to fit in\n",
1701                       init_data_size);
1702                 ret = -EINVAL;
1703                 goto err_release;
1704         }
1705         if (boot_size > priv->hw_params.max_bsm_size) {
1706                 IWL_DEBUG_INFO
1707                     ("uCode boot instr len %d too large to fit in\n",
1708                       boot_size);
1709                 ret = -EINVAL;
1710                 goto err_release;
1711         }
1712
1713         /* Allocate ucode buffers for card's bus-master loading ... */
1714
1715         /* Runtime instructions and 2 copies of data:
1716          * 1) unmodified from disk
1717          * 2) backup cache for save/restore during power-downs */
1718         priv->ucode_code.len = inst_size;
1719         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1720
1721         priv->ucode_data.len = data_size;
1722         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1723
1724         priv->ucode_data_backup.len = data_size;
1725         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1726
1727         /* Initialization instructions and data */
1728         if (init_size && init_data_size) {
1729                 priv->ucode_init.len = init_size;
1730                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1731
1732                 priv->ucode_init_data.len = init_data_size;
1733                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1734
1735                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1736                         goto err_pci_alloc;
1737         }
1738
1739         /* Bootstrap (instructions only, no data) */
1740         if (boot_size) {
1741                 priv->ucode_boot.len = boot_size;
1742                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1743
1744                 if (!priv->ucode_boot.v_addr)
1745                         goto err_pci_alloc;
1746         }
1747
1748         /* Copy images into buffers for card's bus-master reads ... */
1749
1750         /* Runtime instructions (first block of data in file) */
1751         src = &ucode->data[0];
1752         len = priv->ucode_code.len;
1753         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1754         memcpy(priv->ucode_code.v_addr, src, len);
1755         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1756                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1757
1758         /* Runtime data (2nd block)
1759          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1760         src = &ucode->data[inst_size];
1761         len = priv->ucode_data.len;
1762         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1763         memcpy(priv->ucode_data.v_addr, src, len);
1764         memcpy(priv->ucode_data_backup.v_addr, src, len);
1765
1766         /* Initialization instructions (3rd block) */
1767         if (init_size) {
1768                 src = &ucode->data[inst_size + data_size];
1769                 len = priv->ucode_init.len;
1770                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1771                                 len);
1772                 memcpy(priv->ucode_init.v_addr, src, len);
1773         }
1774
1775         /* Initialization data (4th block) */
1776         if (init_data_size) {
1777                 src = &ucode->data[inst_size + data_size + init_size];
1778                 len = priv->ucode_init_data.len;
1779                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1780                                len);
1781                 memcpy(priv->ucode_init_data.v_addr, src, len);
1782         }
1783
1784         /* Bootstrap instructions (5th block) */
1785         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1786         len = priv->ucode_boot.len;
1787         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1788         memcpy(priv->ucode_boot.v_addr, src, len);
1789
1790         /* We have our copies now, allow OS release its copies */
1791         release_firmware(ucode_raw);
1792         return 0;
1793
1794  err_pci_alloc:
1795         IWL_ERR(priv, "failed to allocate pci memory\n");
1796         ret = -ENOMEM;
1797         iwl_dealloc_ucode_pci(priv);
1798
1799  err_release:
1800         release_firmware(ucode_raw);
1801
1802  error:
1803         return ret;
1804 }
1805
1806 /* temporary */
1807 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1808                                  struct sk_buff *skb);
1809
1810 /**
1811  * iwl_alive_start - called after REPLY_ALIVE notification received
1812  *                   from protocol/runtime uCode (initialization uCode's
1813  *                   Alive gets handled by iwl_init_alive_start()).
1814  */
1815 static void iwl_alive_start(struct iwl_priv *priv)
1816 {
1817         int ret = 0;
1818
1819         IWL_DEBUG_INFO("Runtime Alive received.\n");
1820
1821         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1822                 /* We had an error bringing up the hardware, so take it
1823                  * all the way back down so we can try again */
1824                 IWL_DEBUG_INFO("Alive failed.\n");
1825                 goto restart;
1826         }
1827
1828         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1829          * This is a paranoid check, because we would not have gotten the
1830          * "runtime" alive if code weren't properly loaded.  */
1831         if (iwl_verify_ucode(priv)) {
1832                 /* Runtime instruction load was bad;
1833                  * take it all the way back down so we can try again */
1834                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1835                 goto restart;
1836         }
1837
1838         iwl_clear_stations_table(priv);
1839         ret = priv->cfg->ops->lib->alive_notify(priv);
1840         if (ret) {
1841                 IWL_WARN(priv,
1842                         "Could not complete ALIVE transition [ntf]: %d\n", ret);
1843                 goto restart;
1844         }
1845
1846         /* After the ALIVE response, we can send host commands to the uCode */
1847         set_bit(STATUS_ALIVE, &priv->status);
1848
1849         if (iwl_is_rfkill(priv))
1850                 return;
1851
1852         ieee80211_wake_queues(priv->hw);
1853
1854         priv->active_rate = priv->rates_mask;
1855         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1856
1857         if (iwl_is_associated(priv)) {
1858                 struct iwl_rxon_cmd *active_rxon =
1859                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1860
1861                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1862                        sizeof(priv->staging_rxon));
1863                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1864         } else {
1865                 /* Initialize our rx_config data */
1866                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1867                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1868         }
1869
1870         /* Configure Bluetooth device coexistence support */
1871         iwl_send_bt_config(priv);
1872
1873         iwl_reset_run_time_calib(priv);
1874
1875         /* Configure the adapter for unassociated operation */
1876         iwl_commit_rxon(priv);
1877
1878         /* At this point, the NIC is initialized and operational */
1879         iwl_rf_kill_ct_config(priv);
1880
1881         iwl_leds_register(priv);
1882
1883         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1884         set_bit(STATUS_READY, &priv->status);
1885         wake_up_interruptible(&priv->wait_command_queue);
1886
1887         if (priv->error_recovering)
1888                 iwl_error_recovery(priv);
1889
1890         iwl_power_update_mode(priv, 1);
1891
1892         /* reassociate for ADHOC mode */
1893         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1894                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1895                                                                 priv->vif);
1896                 if (beacon)
1897                         iwl_mac_beacon_update(priv->hw, beacon);
1898         }
1899
1900
1901         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1902                 iwl_set_mode(priv, priv->iw_mode);
1903
1904         return;
1905
1906  restart:
1907         queue_work(priv->workqueue, &priv->restart);
1908 }
1909
1910 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1911
1912 static void __iwl_down(struct iwl_priv *priv)
1913 {
1914         unsigned long flags;
1915         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1916
1917         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1918
1919         if (!exit_pending)
1920                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1921
1922         iwl_leds_unregister(priv);
1923
1924         iwl_clear_stations_table(priv);
1925
1926         /* Unblock any waiting calls */
1927         wake_up_interruptible_all(&priv->wait_command_queue);
1928
1929         /* Wipe out the EXIT_PENDING status bit if we are not actually
1930          * exiting the module */
1931         if (!exit_pending)
1932                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1933
1934         /* stop and reset the on-board processor */
1935         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1936
1937         /* tell the device to stop sending interrupts */
1938         spin_lock_irqsave(&priv->lock, flags);
1939         iwl_disable_interrupts(priv);
1940         spin_unlock_irqrestore(&priv->lock, flags);
1941         iwl_synchronize_irq(priv);
1942
1943         if (priv->mac80211_registered)
1944                 ieee80211_stop_queues(priv->hw);
1945
1946         /* If we have not previously called iwl_init() then
1947          * clear all bits but the RF Kill and SUSPEND bits and return */
1948         if (!iwl_is_init(priv)) {
1949                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1950                                         STATUS_RF_KILL_HW |
1951                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1952                                         STATUS_RF_KILL_SW |
1953                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1954                                         STATUS_GEO_CONFIGURED |
1955                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1956                                         STATUS_IN_SUSPEND |
1957                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1958                                         STATUS_EXIT_PENDING;
1959                 goto exit;
1960         }
1961
1962         /* ...otherwise clear out all the status bits but the RF Kill and
1963          * SUSPEND bits and continue taking the NIC down. */
1964         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1965                                 STATUS_RF_KILL_HW |
1966                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
1967                                 STATUS_RF_KILL_SW |
1968                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
1969                                 STATUS_GEO_CONFIGURED |
1970                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
1971                                 STATUS_IN_SUSPEND |
1972                         test_bit(STATUS_FW_ERROR, &priv->status) <<
1973                                 STATUS_FW_ERROR |
1974                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
1975                                 STATUS_EXIT_PENDING;
1976
1977         spin_lock_irqsave(&priv->lock, flags);
1978         iwl_clear_bit(priv, CSR_GP_CNTRL,
1979                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
1980         spin_unlock_irqrestore(&priv->lock, flags);
1981
1982         iwl_txq_ctx_stop(priv);
1983         iwl_rxq_stop(priv);
1984
1985         spin_lock_irqsave(&priv->lock, flags);
1986         if (!iwl_grab_nic_access(priv)) {
1987                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
1988                                          APMG_CLK_VAL_DMA_CLK_RQT);
1989                 iwl_release_nic_access(priv);
1990         }
1991         spin_unlock_irqrestore(&priv->lock, flags);
1992
1993         udelay(5);
1994
1995         /* FIXME: apm_ops.suspend(priv) */
1996         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
1997                 priv->cfg->ops->lib->apm_ops.stop(priv);
1998         else
1999                 priv->cfg->ops->lib->apm_ops.reset(priv);
2000  exit:
2001         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2002
2003         if (priv->ibss_beacon)
2004                 dev_kfree_skb(priv->ibss_beacon);
2005         priv->ibss_beacon = NULL;
2006
2007         /* clear out any free frames */
2008         iwl_clear_free_frames(priv);
2009 }
2010
2011 static void iwl_down(struct iwl_priv *priv)
2012 {
2013         mutex_lock(&priv->mutex);
2014         __iwl_down(priv);
2015         mutex_unlock(&priv->mutex);
2016
2017         iwl_cancel_deferred_work(priv);
2018 }
2019
2020 #define MAX_HW_RESTARTS 5
2021
2022 static int __iwl_up(struct iwl_priv *priv)
2023 {
2024         int i;
2025         int ret;
2026
2027         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2028                 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2029                 return -EIO;
2030         }
2031
2032         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2033                 IWL_ERR(priv, "ucode not available for device bringup\n");
2034                 return -EIO;
2035         }
2036
2037         /* If platform's RF_KILL switch is NOT set to KILL */
2038         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2039                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2040         else
2041                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2042
2043         if (iwl_is_rfkill(priv)) {
2044                 iwl_enable_interrupts(priv);
2045                 IWL_WARN(priv, "Radio disabled by %s RF Kill switch\n",
2046                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2047                 return 0;
2048         }
2049
2050         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2051
2052         ret = iwl_hw_nic_init(priv);
2053         if (ret) {
2054                 IWL_ERR(priv, "Unable to init nic\n");
2055                 return ret;
2056         }
2057
2058         /* make sure rfkill handshake bits are cleared */
2059         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2060         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2061                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2062
2063         /* clear (again), then enable host interrupts */
2064         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2065         iwl_enable_interrupts(priv);
2066
2067         /* really make sure rfkill handshake bits are cleared */
2068         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2069         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2070
2071         /* Copy original ucode data image from disk into backup cache.
2072          * This will be used to initialize the on-board processor's
2073          * data SRAM for a clean start when the runtime program first loads. */
2074         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2075                priv->ucode_data.len);
2076
2077         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2078
2079                 iwl_clear_stations_table(priv);
2080
2081                 /* load bootstrap state machine,
2082                  * load bootstrap program into processor's memory,
2083                  * prepare to load the "initialize" uCode */
2084                 ret = priv->cfg->ops->lib->load_ucode(priv);
2085
2086                 if (ret) {
2087                         IWL_ERR(priv, "Unable to set up bootstrap uCode: %d\n",
2088                                 ret);
2089                         continue;
2090                 }
2091
2092                 /* Clear out the uCode error bit if it is set */
2093                 clear_bit(STATUS_FW_ERROR, &priv->status);
2094
2095                 /* start card; "initialize" will load runtime ucode */
2096                 iwl_nic_start(priv);
2097
2098                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2099
2100                 return 0;
2101         }
2102
2103         set_bit(STATUS_EXIT_PENDING, &priv->status);
2104         __iwl_down(priv);
2105         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2106
2107         /* tried to restart and config the device for as long as our
2108          * patience could withstand */
2109         IWL_ERR(priv, "Unable to initialize device after %d attempts.\n", i);
2110         return -EIO;
2111 }
2112
2113
2114 /*****************************************************************************
2115  *
2116  * Workqueue callbacks
2117  *
2118  *****************************************************************************/
2119
2120 static void iwl_bg_init_alive_start(struct work_struct *data)
2121 {
2122         struct iwl_priv *priv =
2123             container_of(data, struct iwl_priv, init_alive_start.work);
2124
2125         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2126                 return;
2127
2128         mutex_lock(&priv->mutex);
2129         priv->cfg->ops->lib->init_alive_start(priv);
2130         mutex_unlock(&priv->mutex);
2131 }
2132
2133 static void iwl_bg_alive_start(struct work_struct *data)
2134 {
2135         struct iwl_priv *priv =
2136             container_of(data, struct iwl_priv, alive_start.work);
2137
2138         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2139                 return;
2140
2141         mutex_lock(&priv->mutex);
2142         iwl_alive_start(priv);
2143         mutex_unlock(&priv->mutex);
2144 }
2145
2146 static void iwl_bg_rf_kill(struct work_struct *work)
2147 {
2148         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2149
2150         wake_up_interruptible(&priv->wait_command_queue);
2151
2152         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2153                 return;
2154
2155         mutex_lock(&priv->mutex);
2156
2157         if (!iwl_is_rfkill(priv)) {
2158                 IWL_DEBUG(IWL_DL_RF_KILL,
2159                           "HW and/or SW RF Kill no longer active, restarting "
2160                           "device\n");
2161                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2162                         queue_work(priv->workqueue, &priv->restart);
2163         } else {
2164                 /* make sure mac80211 stop sending Tx frame */
2165                 if (priv->mac80211_registered)
2166                         ieee80211_stop_queues(priv->hw);
2167
2168                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2169                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2170                                           "disabled by SW switch\n");
2171                 else
2172                         IWL_WARN(priv, "Radio Frequency Kill Switch is On:\n"
2173                                     "Kill switch must be turned off for "
2174                                     "wireless networking to work.\n");
2175         }
2176         mutex_unlock(&priv->mutex);
2177         iwl_rfkill_set_hw_state(priv);
2178 }
2179
2180 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2181 {
2182         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2183                         run_time_calib_work);
2184
2185         mutex_lock(&priv->mutex);
2186
2187         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2188             test_bit(STATUS_SCANNING, &priv->status)) {
2189                 mutex_unlock(&priv->mutex);
2190                 return;
2191         }
2192
2193         if (priv->start_calib) {
2194                 iwl_chain_noise_calibration(priv, &priv->statistics);
2195
2196                 iwl_sensitivity_calibration(priv, &priv->statistics);
2197         }
2198
2199         mutex_unlock(&priv->mutex);
2200         return;
2201 }
2202
2203 static void iwl_bg_up(struct work_struct *data)
2204 {
2205         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2206
2207         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2208                 return;
2209
2210         mutex_lock(&priv->mutex);
2211         __iwl_up(priv);
2212         mutex_unlock(&priv->mutex);
2213         iwl_rfkill_set_hw_state(priv);
2214 }
2215
2216 static void iwl_bg_restart(struct work_struct *data)
2217 {
2218         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2219
2220         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2221                 return;
2222
2223         iwl_down(priv);
2224         queue_work(priv->workqueue, &priv->up);
2225 }
2226
2227 static void iwl_bg_rx_replenish(struct work_struct *data)
2228 {
2229         struct iwl_priv *priv =
2230             container_of(data, struct iwl_priv, rx_replenish);
2231
2232         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2233                 return;
2234
2235         mutex_lock(&priv->mutex);
2236         iwl_rx_replenish(priv);
2237         mutex_unlock(&priv->mutex);
2238 }
2239
2240 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2241
2242 static void iwl_post_associate(struct iwl_priv *priv)
2243 {
2244         struct ieee80211_conf *conf = NULL;
2245         int ret = 0;
2246         unsigned long flags;
2247
2248         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2249                 IWL_ERR(priv, "%s Should not be called in AP mode\n", __func__);
2250                 return;
2251         }
2252
2253         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2254                         priv->assoc_id, priv->active_rxon.bssid_addr);
2255
2256
2257         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2258                 return;
2259
2260
2261         if (!priv->vif || !priv->is_open)
2262                 return;
2263
2264         iwl_power_cancel_timeout(priv);
2265         iwl_scan_cancel_timeout(priv, 200);
2266
2267         conf = ieee80211_get_hw_conf(priv->hw);
2268
2269         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2270         iwl_commit_rxon(priv);
2271
2272         iwl_setup_rxon_timing(priv);
2273         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2274                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2275         if (ret)
2276                 IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2277                             "Attempting to continue.\n");
2278
2279         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2280
2281         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2282
2283         iwl_set_rxon_chain(priv);
2284         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2285
2286         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2287                         priv->assoc_id, priv->beacon_int);
2288
2289         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2290                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2291         else
2292                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2293
2294         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2295                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2296                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2297                 else
2298                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2299
2300                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2301                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2302
2303         }
2304
2305         iwl_commit_rxon(priv);
2306
2307         switch (priv->iw_mode) {
2308         case NL80211_IFTYPE_STATION:
2309                 break;
2310
2311         case NL80211_IFTYPE_ADHOC:
2312
2313                 /* assume default assoc id */
2314                 priv->assoc_id = 1;
2315
2316                 iwl_rxon_add_station(priv, priv->bssid, 0);
2317                 iwl_send_beacon_cmd(priv);
2318
2319                 break;
2320
2321         default:
2322                 IWL_ERR(priv, "%s Should not be called in %d mode\n",
2323                           __func__, priv->iw_mode);
2324                 break;
2325         }
2326
2327         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2328                 priv->assoc_station_added = 1;
2329
2330         spin_lock_irqsave(&priv->lock, flags);
2331         iwl_activate_qos(priv, 0);
2332         spin_unlock_irqrestore(&priv->lock, flags);
2333
2334         /* the chain noise calibration will enabled PM upon completion
2335          * If chain noise has already been run, then we need to enable
2336          * power management here */
2337         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2338                 iwl_power_enable_management(priv);
2339
2340         /* Enable Rx differential gain and sensitivity calibrations */
2341         iwl_chain_noise_reset(priv);
2342         priv->start_calib = 1;
2343
2344 }
2345
2346 /*****************************************************************************
2347  *
2348  * mac80211 entry point functions
2349  *
2350  *****************************************************************************/
2351
2352 #define UCODE_READY_TIMEOUT     (4 * HZ)
2353
2354 static int iwl_mac_start(struct ieee80211_hw *hw)
2355 {
2356         struct iwl_priv *priv = hw->priv;
2357         int ret;
2358         u16 pci_cmd;
2359
2360         IWL_DEBUG_MAC80211("enter\n");
2361
2362         if (pci_enable_device(priv->pci_dev)) {
2363                 IWL_ERR(priv, "Fail to pci_enable_device\n");
2364                 return -ENODEV;
2365         }
2366         pci_restore_state(priv->pci_dev);
2367         pci_enable_msi(priv->pci_dev);
2368
2369         /* enable interrupts if needed: hw bug w/a */
2370         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2371         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2372                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2373                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2374         }
2375
2376         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2377                           DRV_NAME, priv);
2378         if (ret) {
2379                 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
2380                 goto out_disable_msi;
2381         }
2382
2383         /* we should be verifying the device is ready to be opened */
2384         mutex_lock(&priv->mutex);
2385
2386         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2387         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2388          * ucode filename and max sizes are card-specific. */
2389
2390         if (!priv->ucode_code.len) {
2391                 ret = iwl_read_ucode(priv);
2392                 if (ret) {
2393                         IWL_ERR(priv, "Could not read microcode: %d\n", ret);
2394                         mutex_unlock(&priv->mutex);
2395                         goto out_release_irq;
2396                 }
2397         }
2398
2399         ret = __iwl_up(priv);
2400
2401         mutex_unlock(&priv->mutex);
2402
2403         iwl_rfkill_set_hw_state(priv);
2404
2405         if (ret)
2406                 goto out_release_irq;
2407
2408         if (iwl_is_rfkill(priv))
2409                 goto out;
2410
2411         IWL_DEBUG_INFO("Start UP work done.\n");
2412
2413         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2414                 return 0;
2415
2416         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2417          * mac80211 will not be run successfully. */
2418         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2419                         test_bit(STATUS_READY, &priv->status),
2420                         UCODE_READY_TIMEOUT);
2421         if (!ret) {
2422                 if (!test_bit(STATUS_READY, &priv->status)) {
2423                         IWL_ERR(priv, "START_ALIVE timeout after %dms.\n",
2424                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2425                         ret = -ETIMEDOUT;
2426                         goto out_release_irq;
2427                 }
2428         }
2429
2430 out:
2431         priv->is_open = 1;
2432         IWL_DEBUG_MAC80211("leave\n");
2433         return 0;
2434
2435 out_release_irq:
2436         free_irq(priv->pci_dev->irq, priv);
2437 out_disable_msi:
2438         pci_disable_msi(priv->pci_dev);
2439         pci_disable_device(priv->pci_dev);
2440         priv->is_open = 0;
2441         IWL_DEBUG_MAC80211("leave - failed\n");
2442         return ret;
2443 }
2444
2445 static void iwl_mac_stop(struct ieee80211_hw *hw)
2446 {
2447         struct iwl_priv *priv = hw->priv;
2448
2449         IWL_DEBUG_MAC80211("enter\n");
2450
2451         if (!priv->is_open) {
2452                 IWL_DEBUG_MAC80211("leave - skip\n");
2453                 return;
2454         }
2455
2456         priv->is_open = 0;
2457
2458         if (iwl_is_ready_rf(priv)) {
2459                 /* stop mac, cancel any scan request and clear
2460                  * RXON_FILTER_ASSOC_MSK BIT
2461                  */
2462                 mutex_lock(&priv->mutex);
2463                 iwl_scan_cancel_timeout(priv, 100);
2464                 mutex_unlock(&priv->mutex);
2465         }
2466
2467         iwl_down(priv);
2468
2469         flush_workqueue(priv->workqueue);
2470         free_irq(priv->pci_dev->irq, priv);
2471         pci_disable_msi(priv->pci_dev);
2472         pci_save_state(priv->pci_dev);
2473         pci_disable_device(priv->pci_dev);
2474
2475         IWL_DEBUG_MAC80211("leave\n");
2476 }
2477
2478 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2479 {
2480         struct iwl_priv *priv = hw->priv;
2481
2482         IWL_DEBUG_MACDUMP("enter\n");
2483
2484         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2485                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2486
2487         if (iwl_tx_skb(priv, skb))
2488                 dev_kfree_skb_any(skb);
2489
2490         IWL_DEBUG_MACDUMP("leave\n");
2491         return NETDEV_TX_OK;
2492 }
2493
2494 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2495                                  struct ieee80211_if_init_conf *conf)
2496 {
2497         struct iwl_priv *priv = hw->priv;
2498         unsigned long flags;
2499
2500         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2501
2502         if (priv->vif) {
2503                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2504                 return -EOPNOTSUPP;
2505         }
2506
2507         spin_lock_irqsave(&priv->lock, flags);
2508         priv->vif = conf->vif;
2509         priv->iw_mode = conf->type;
2510
2511         spin_unlock_irqrestore(&priv->lock, flags);
2512
2513         mutex_lock(&priv->mutex);
2514
2515         if (conf->mac_addr) {
2516                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2517                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2518         }
2519
2520         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2521                 /* we are not ready, will run again when ready */
2522                 set_bit(STATUS_MODE_PENDING, &priv->status);
2523
2524         mutex_unlock(&priv->mutex);
2525
2526         IWL_DEBUG_MAC80211("leave\n");
2527         return 0;
2528 }
2529
2530 /**
2531  * iwl_mac_config - mac80211 config callback
2532  *
2533  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2534  * be set inappropriately and the driver currently sets the hardware up to
2535  * use it whenever needed.
2536  */
2537 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2538 {
2539         struct iwl_priv *priv = hw->priv;
2540         const struct iwl_channel_info *ch_info;
2541         struct ieee80211_conf *conf = &hw->conf;
2542         unsigned long flags;
2543         int ret = 0;
2544         u16 channel;
2545
2546         mutex_lock(&priv->mutex);
2547         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2548
2549         priv->current_ht_config.is_ht = conf_is_ht(conf);
2550
2551         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2552                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2553                 goto out;
2554         }
2555
2556         if (!conf->radio_enabled)
2557                 iwl_radio_kill_sw_disable_radio(priv);
2558
2559         if (!iwl_is_ready(priv)) {
2560                 IWL_DEBUG_MAC80211("leave - not ready\n");
2561                 ret = -EIO;
2562                 goto out;
2563         }
2564
2565         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2566                      test_bit(STATUS_SCANNING, &priv->status))) {
2567                 IWL_DEBUG_MAC80211("leave - scanning\n");
2568                 mutex_unlock(&priv->mutex);
2569                 return 0;
2570         }
2571
2572         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2573         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2574         if (!is_channel_valid(ch_info)) {
2575                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2576                 ret = -EINVAL;
2577                 goto out;
2578         }
2579
2580         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2581             !is_channel_ibss(ch_info)) {
2582                 IWL_ERR(priv, "channel %d in band %d not IBSS channel\n",
2583                         conf->channel->hw_value, conf->channel->band);
2584                 ret = -EINVAL;
2585                 goto out;
2586         }
2587
2588         spin_lock_irqsave(&priv->lock, flags);
2589
2590
2591         /* if we are switching from ht to 2.4 clear flags
2592          * from any ht related info since 2.4 does not
2593          * support ht */
2594         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2595 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2596             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2597 #endif
2598         )
2599                 priv->staging_rxon.flags = 0;
2600
2601         iwl_set_rxon_channel(priv, conf->channel);
2602
2603         iwl_set_flags_for_band(priv, conf->channel->band);
2604
2605         /* The list of supported rates and rate mask can be different
2606          * for each band; since the band may have changed, reset
2607          * the rate mask to what mac80211 lists */
2608         iwl_set_rate(priv);
2609
2610         spin_unlock_irqrestore(&priv->lock, flags);
2611
2612 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2613         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2614                 iwl_hw_channel_switch(priv, conf->channel);
2615                 goto out;
2616         }
2617 #endif
2618
2619         if (!conf->radio_enabled) {
2620                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2621                 goto out;
2622         }
2623
2624         if (iwl_is_rfkill(priv)) {
2625                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2626                 ret = -EIO;
2627                 goto out;
2628         }
2629
2630         if (conf->flags & IEEE80211_CONF_PS)
2631                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2632         else
2633                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2634         if (ret)
2635                 IWL_DEBUG_MAC80211("Error setting power level\n");
2636
2637         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2638                            priv->tx_power_user_lmt, conf->power_level);
2639
2640         iwl_set_tx_power(priv, conf->power_level, false);
2641
2642         iwl_set_rate(priv);
2643
2644         if (memcmp(&priv->active_rxon,
2645                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2646                 iwl_commit_rxon(priv);
2647         else
2648                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2649
2650         IWL_DEBUG_MAC80211("leave\n");
2651
2652 out:
2653         mutex_unlock(&priv->mutex);
2654         return ret;
2655 }
2656
2657 static void iwl_config_ap(struct iwl_priv *priv)
2658 {
2659         int ret = 0;
2660         unsigned long flags;
2661
2662         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2663                 return;
2664
2665         /* The following should be done only at AP bring up */
2666         if (!iwl_is_associated(priv)) {
2667
2668                 /* RXON - unassoc (to set timing command) */
2669                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2670                 iwl_commit_rxon(priv);
2671
2672                 /* RXON Timing */
2673                 iwl_setup_rxon_timing(priv);
2674                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2675                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2676                 if (ret)
2677                         IWL_WARN(priv, "REPLY_RXON_TIMING failed - "
2678                                         "Attempting to continue.\n");
2679
2680                 iwl_set_rxon_chain(priv);
2681
2682                 /* FIXME: what should be the assoc_id for AP? */
2683                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2684                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2685                         priv->staging_rxon.flags |=
2686                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2687                 else
2688                         priv->staging_rxon.flags &=
2689                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2690
2691                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2692                         if (priv->assoc_capability &
2693                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2694                                 priv->staging_rxon.flags |=
2695                                         RXON_FLG_SHORT_SLOT_MSK;
2696                         else
2697                                 priv->staging_rxon.flags &=
2698                                         ~RXON_FLG_SHORT_SLOT_MSK;
2699
2700                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2701                                 priv->staging_rxon.flags &=
2702                                         ~RXON_FLG_SHORT_SLOT_MSK;
2703                 }
2704                 /* restore RXON assoc */
2705                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2706                 iwl_commit_rxon(priv);
2707                 spin_lock_irqsave(&priv->lock, flags);
2708                 iwl_activate_qos(priv, 1);
2709                 spin_unlock_irqrestore(&priv->lock, flags);
2710                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2711         }
2712         iwl_send_beacon_cmd(priv);
2713
2714         /* FIXME - we need to add code here to detect a totally new
2715          * configuration, reset the AP, unassoc, rxon timing, assoc,
2716          * clear sta table, add BCAST sta... */
2717 }
2718
2719
2720 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2721                                         struct ieee80211_vif *vif,
2722                                     struct ieee80211_if_conf *conf)
2723 {
2724         struct iwl_priv *priv = hw->priv;
2725         int rc;
2726
2727         if (conf == NULL)
2728                 return -EIO;
2729
2730         if (priv->vif != vif) {
2731                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2732                 return 0;
2733         }
2734
2735         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2736             conf->changed & IEEE80211_IFCC_BEACON) {
2737                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2738                 if (!beacon)
2739                         return -ENOMEM;
2740                 mutex_lock(&priv->mutex);
2741                 rc = iwl_mac_beacon_update(hw, beacon);
2742                 mutex_unlock(&priv->mutex);
2743                 if (rc)
2744                         return rc;
2745         }
2746
2747         if (!iwl_is_alive(priv))
2748                 return -EAGAIN;
2749
2750         mutex_lock(&priv->mutex);
2751
2752         if (conf->bssid)
2753                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2754
2755 /*
2756  * very dubious code was here; the probe filtering flag is never set:
2757  *
2758         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2759             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2760  */
2761
2762         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2763                 if (!conf->bssid) {
2764                         conf->bssid = priv->mac_addr;
2765                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2766                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2767                                            conf->bssid);
2768                 }
2769                 if (priv->ibss_beacon)
2770                         dev_kfree_skb(priv->ibss_beacon);
2771
2772                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2773         }
2774
2775         if (iwl_is_rfkill(priv))
2776                 goto done;
2777
2778         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2779             !is_multicast_ether_addr(conf->bssid)) {
2780                 /* If there is currently a HW scan going on in the background
2781                  * then we need to cancel it else the RXON below will fail. */
2782                 if (iwl_scan_cancel_timeout(priv, 100)) {
2783                         IWL_WARN(priv, "Aborted scan still in progress "
2784                                     "after 100ms\n");
2785                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2786                         mutex_unlock(&priv->mutex);
2787                         return -EAGAIN;
2788                 }
2789                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2790
2791                 /* TODO: Audit driver for usage of these members and see
2792                  * if mac80211 deprecates them (priv->bssid looks like it
2793                  * shouldn't be there, but I haven't scanned the IBSS code
2794                  * to verify) - jpk */
2795                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2796
2797                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2798                         iwl_config_ap(priv);
2799                 else {
2800                         rc = iwl_commit_rxon(priv);
2801                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2802                                 iwl_rxon_add_station(
2803                                         priv, priv->active_rxon.bssid_addr, 1);
2804                 }
2805
2806         } else {
2807                 iwl_scan_cancel_timeout(priv, 100);
2808                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2809                 iwl_commit_rxon(priv);
2810         }
2811
2812  done:
2813         IWL_DEBUG_MAC80211("leave\n");
2814         mutex_unlock(&priv->mutex);
2815
2816         return 0;
2817 }
2818
2819 static void iwl_configure_filter(struct ieee80211_hw *hw,
2820                                  unsigned int changed_flags,
2821                                  unsigned int *total_flags,
2822                                  int mc_count, struct dev_addr_list *mc_list)
2823 {
2824         struct iwl_priv *priv = hw->priv;
2825         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2826
2827         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2828                         changed_flags, *total_flags);
2829
2830         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2831                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2832                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2833                 else
2834                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2835         }
2836         if (changed_flags & FIF_ALLMULTI) {
2837                 if (*total_flags & FIF_ALLMULTI)
2838                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2839                 else
2840                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2841         }
2842         if (changed_flags & FIF_CONTROL) {
2843                 if (*total_flags & FIF_CONTROL)
2844                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2845                 else
2846                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2847         }
2848         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2849                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2850                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2851                 else
2852                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2853         }
2854
2855         /* We avoid iwl_commit_rxon here to commit the new filter flags
2856          * since mac80211 will call ieee80211_hw_config immediately.
2857          * (mc_list is not supported at this time). Otherwise, we need to
2858          * queue a background iwl_commit_rxon work.
2859          */
2860
2861         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2862                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2863 }
2864
2865 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2866                                      struct ieee80211_if_init_conf *conf)
2867 {
2868         struct iwl_priv *priv = hw->priv;
2869
2870         IWL_DEBUG_MAC80211("enter\n");
2871
2872         mutex_lock(&priv->mutex);
2873
2874         if (iwl_is_ready_rf(priv)) {
2875                 iwl_scan_cancel_timeout(priv, 100);
2876                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2877                 iwl_commit_rxon(priv);
2878         }
2879         if (priv->vif == conf->vif) {
2880                 priv->vif = NULL;
2881                 memset(priv->bssid, 0, ETH_ALEN);
2882         }
2883         mutex_unlock(&priv->mutex);
2884
2885         IWL_DEBUG_MAC80211("leave\n");
2886
2887 }
2888
2889 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2890 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2891                                      struct ieee80211_vif *vif,
2892                                      struct ieee80211_bss_conf *bss_conf,
2893                                      u32 changes)
2894 {
2895         struct iwl_priv *priv = hw->priv;
2896
2897         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2898
2899         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2900                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2901                                    bss_conf->use_short_preamble);
2902                 if (bss_conf->use_short_preamble)
2903                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2904                 else
2905                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2906         }
2907
2908         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2909                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2910                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2911                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2912                 else
2913                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2914         }
2915
2916         if (changes & BSS_CHANGED_HT) {
2917                 iwl_ht_conf(priv, bss_conf);
2918                 iwl_set_rxon_chain(priv);
2919         }
2920
2921         if (changes & BSS_CHANGED_ASSOC) {
2922                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2923                 /* This should never happen as this function should
2924                  * never be called from interrupt context. */
2925                 if (WARN_ON_ONCE(in_interrupt()))
2926                         return;
2927                 if (bss_conf->assoc) {
2928                         priv->assoc_id = bss_conf->aid;
2929                         priv->beacon_int = bss_conf->beacon_int;
2930                         priv->power_data.dtim_period = bss_conf->dtim_period;
2931                         priv->timestamp = bss_conf->timestamp;
2932                         priv->assoc_capability = bss_conf->assoc_capability;
2933
2934                         /* we have just associated, don't start scan too early
2935                          * leave time for EAPOL exchange to complete
2936                          */
2937                         priv->next_scan_jiffies = jiffies +
2938                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2939                         mutex_lock(&priv->mutex);
2940                         iwl_post_associate(priv);
2941                         mutex_unlock(&priv->mutex);
2942                 } else {
2943                         priv->assoc_id = 0;
2944                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2945                 }
2946         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2947                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2948                         iwl_send_rxon_assoc(priv);
2949         }
2950
2951 }
2952
2953 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
2954 {
2955         unsigned long flags;
2956         struct iwl_priv *priv = hw->priv;
2957         int ret;
2958
2959         IWL_DEBUG_MAC80211("enter\n");
2960
2961         mutex_lock(&priv->mutex);
2962         spin_lock_irqsave(&priv->lock, flags);
2963
2964         if (!iwl_is_ready_rf(priv)) {
2965                 ret = -EIO;
2966                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
2967                 goto out_unlock;
2968         }
2969
2970         /* We don't schedule scan within next_scan_jiffies period.
2971          * Avoid scanning during possible EAPOL exchange, return
2972          * success immediately.
2973          */
2974         if (priv->next_scan_jiffies &&
2975             time_after(priv->next_scan_jiffies, jiffies)) {
2976                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
2977                 queue_work(priv->workqueue, &priv->scan_completed);
2978                 ret = 0;
2979                 goto out_unlock;
2980         }
2981
2982         /* if we just finished scan ask for delay */
2983         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
2984             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
2985                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
2986                 queue_work(priv->workqueue, &priv->scan_completed);
2987                 ret = 0;
2988                 goto out_unlock;
2989         }
2990
2991         if (ssid_len) {
2992                 priv->one_direct_scan = 1;
2993                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
2994                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
2995         } else {
2996                 priv->one_direct_scan = 0;
2997         }
2998
2999         ret = iwl_scan_initiate(priv);
3000
3001         IWL_DEBUG_MAC80211("leave\n");
3002
3003 out_unlock:
3004         spin_unlock_irqrestore(&priv->lock, flags);
3005         mutex_unlock(&priv->mutex);
3006
3007         return ret;
3008 }
3009
3010 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3011                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3012                         u32 iv32, u16 *phase1key)
3013 {
3014
3015         struct iwl_priv *priv = hw->priv;
3016         IWL_DEBUG_MAC80211("enter\n");
3017
3018         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3019
3020         IWL_DEBUG_MAC80211("leave\n");
3021 }
3022
3023 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3024                            struct ieee80211_vif *vif,
3025                            struct ieee80211_sta *sta,
3026                            struct ieee80211_key_conf *key)
3027 {
3028         struct iwl_priv *priv = hw->priv;
3029         int ret = 0;
3030         u8 sta_id = IWL_INVALID_STATION;
3031         u8 is_default_wep_key = 0;
3032         static const u8 bcast_addr[ETH_ALEN] =
3033                 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, };
3034         static const u8 *addr;
3035
3036         IWL_DEBUG_MAC80211("enter\n");
3037
3038         if (priv->hw_params.sw_crypto) {
3039                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3040                 return -EOPNOTSUPP;
3041         }
3042
3043         addr = sta ? sta->addr : bcast_addr;
3044
3045         sta_id = iwl_find_station(priv, addr);
3046         if (sta_id == IWL_INVALID_STATION) {
3047                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3048                                    addr);
3049                 return -EINVAL;
3050
3051         }
3052
3053         mutex_lock(&priv->mutex);
3054         iwl_scan_cancel_timeout(priv, 100);
3055         mutex_unlock(&priv->mutex);
3056
3057         /* If we are getting WEP group key and we didn't receive any key mapping
3058          * so far, we are in legacy wep mode (group key only), otherwise we are
3059          * in 1X mode.
3060          * In legacy wep mode, we use another host command to the uCode */
3061         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3062                 priv->iw_mode != NL80211_IFTYPE_AP) {
3063                 if (cmd == SET_KEY)
3064                         is_default_wep_key = !priv->key_mapping_key;
3065                 else
3066                         is_default_wep_key =
3067                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3068         }
3069
3070         switch (cmd) {
3071         case SET_KEY:
3072                 if (is_default_wep_key)
3073                         ret = iwl_set_default_wep_key(priv, key);
3074                 else
3075                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3076
3077                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3078                 break;
3079         case DISABLE_KEY:
3080                 if (is_default_wep_key)
3081                         ret = iwl_remove_default_wep_key(priv, key);
3082                 else
3083                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3084
3085                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3086                 break;
3087         default:
3088                 ret = -EINVAL;
3089         }
3090
3091         IWL_DEBUG_MAC80211("leave\n");
3092
3093         return ret;
3094 }
3095
3096 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3097                            const struct ieee80211_tx_queue_params *params)
3098 {
3099         struct iwl_priv *priv = hw->priv;
3100         unsigned long flags;
3101         int q;
3102
3103         IWL_DEBUG_MAC80211("enter\n");
3104
3105         if (!iwl_is_ready_rf(priv)) {
3106                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3107                 return -EIO;
3108         }
3109
3110         if (queue >= AC_NUM) {
3111                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3112                 return 0;
3113         }
3114
3115         q = AC_NUM - 1 - queue;
3116
3117         spin_lock_irqsave(&priv->lock, flags);
3118
3119         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3120         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3121         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3122         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3123                         cpu_to_le16((params->txop * 32));
3124
3125         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3126         priv->qos_data.qos_active = 1;
3127
3128         if (priv->iw_mode == NL80211_IFTYPE_AP)
3129                 iwl_activate_qos(priv, 1);
3130         else if (priv->assoc_id && iwl_is_associated(priv))
3131                 iwl_activate_qos(priv, 0);
3132
3133         spin_unlock_irqrestore(&priv->lock, flags);
3134
3135         IWL_DEBUG_MAC80211("leave\n");
3136         return 0;
3137 }
3138
3139 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3140                              enum ieee80211_ampdu_mlme_action action,
3141                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3142 {
3143         struct iwl_priv *priv = hw->priv;
3144
3145         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3146                      sta->addr, tid);
3147
3148         if (!(priv->cfg->sku & IWL_SKU_N))
3149                 return -EACCES;
3150
3151         switch (action) {
3152         case IEEE80211_AMPDU_RX_START:
3153                 IWL_DEBUG_HT("start Rx\n");
3154                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3155         case IEEE80211_AMPDU_RX_STOP:
3156                 IWL_DEBUG_HT("stop Rx\n");
3157                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3158         case IEEE80211_AMPDU_TX_START:
3159                 IWL_DEBUG_HT("start Tx\n");
3160                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3161         case IEEE80211_AMPDU_TX_STOP:
3162                 IWL_DEBUG_HT("stop Tx\n");
3163                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3164         default:
3165                 IWL_DEBUG_HT("unknown\n");
3166                 return -EINVAL;
3167                 break;
3168         }
3169         return 0;
3170 }
3171
3172 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3173                                 struct ieee80211_tx_queue_stats *stats)
3174 {
3175         struct iwl_priv *priv = hw->priv;
3176         int i, avail;
3177         struct iwl_tx_queue *txq;
3178         struct iwl_queue *q;
3179         unsigned long flags;
3180
3181         IWL_DEBUG_MAC80211("enter\n");
3182
3183         if (!iwl_is_ready_rf(priv)) {
3184                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3185                 return -EIO;
3186         }
3187
3188         spin_lock_irqsave(&priv->lock, flags);
3189
3190         for (i = 0; i < AC_NUM; i++) {
3191                 txq = &priv->txq[i];
3192                 q = &txq->q;
3193                 avail = iwl_queue_space(q);
3194
3195                 stats[i].len = q->n_window - avail;
3196                 stats[i].limit = q->n_window - q->high_mark;
3197                 stats[i].count = q->n_window;
3198
3199         }
3200         spin_unlock_irqrestore(&priv->lock, flags);
3201
3202         IWL_DEBUG_MAC80211("leave\n");
3203
3204         return 0;
3205 }
3206
3207 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3208                              struct ieee80211_low_level_stats *stats)
3209 {
3210         struct iwl_priv *priv = hw->priv;
3211
3212         priv = hw->priv;
3213         IWL_DEBUG_MAC80211("enter\n");
3214         IWL_DEBUG_MAC80211("leave\n");
3215
3216         return 0;
3217 }
3218
3219 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3220 {
3221         struct iwl_priv *priv = hw->priv;
3222         unsigned long flags;
3223
3224         mutex_lock(&priv->mutex);
3225         IWL_DEBUG_MAC80211("enter\n");
3226
3227         spin_lock_irqsave(&priv->lock, flags);
3228         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3229         spin_unlock_irqrestore(&priv->lock, flags);
3230
3231         iwl_reset_qos(priv);
3232
3233         spin_lock_irqsave(&priv->lock, flags);
3234         priv->assoc_id = 0;
3235         priv->assoc_capability = 0;
3236         priv->assoc_station_added = 0;
3237
3238         /* new association get rid of ibss beacon skb */
3239         if (priv->ibss_beacon)
3240                 dev_kfree_skb(priv->ibss_beacon);
3241
3242         priv->ibss_beacon = NULL;
3243
3244         priv->beacon_int = priv->hw->conf.beacon_int;
3245         priv->timestamp = 0;
3246         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3247                 priv->beacon_int = 0;
3248
3249         spin_unlock_irqrestore(&priv->lock, flags);
3250
3251         if (!iwl_is_ready_rf(priv)) {
3252                 IWL_DEBUG_MAC80211("leave - not ready\n");
3253                 mutex_unlock(&priv->mutex);
3254                 return;
3255         }
3256
3257         /* we are restarting association process
3258          * clear RXON_FILTER_ASSOC_MSK bit
3259          */
3260         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3261                 iwl_scan_cancel_timeout(priv, 100);
3262                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3263                 iwl_commit_rxon(priv);
3264         }
3265
3266         iwl_power_update_mode(priv, 0);
3267
3268         /* Per mac80211.h: This is only used in IBSS mode... */
3269         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3270
3271                 /* switch to CAM during association period.
3272                  * the ucode will block any association/authentication
3273                  * frome during assiciation period if it can not hear
3274                  * the AP because of PM. the timer enable PM back is
3275                  * association do not complete
3276                  */
3277                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3278                                                      IEEE80211_CHAN_RADAR))
3279                                 iwl_power_disable_management(priv, 3000);
3280
3281                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3282                 mutex_unlock(&priv->mutex);
3283                 return;
3284         }
3285
3286         iwl_set_rate(priv);
3287
3288         mutex_unlock(&priv->mutex);
3289
3290         IWL_DEBUG_MAC80211("leave\n");
3291 }
3292
3293 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3294 {
3295         struct iwl_priv *priv = hw->priv;
3296         unsigned long flags;
3297         __le64 timestamp;
3298
3299         IWL_DEBUG_MAC80211("enter\n");
3300
3301         if (!iwl_is_ready_rf(priv)) {
3302                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3303                 return -EIO;
3304         }
3305
3306         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3307                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3308                 return -EIO;
3309         }
3310
3311         spin_lock_irqsave(&priv->lock, flags);
3312
3313         if (priv->ibss_beacon)
3314                 dev_kfree_skb(priv->ibss_beacon);
3315
3316         priv->ibss_beacon = skb;
3317
3318         priv->assoc_id = 0;
3319         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3320         priv->timestamp = le64_to_cpu(timestamp);
3321
3322         IWL_DEBUG_MAC80211("leave\n");
3323         spin_unlock_irqrestore(&priv->lock, flags);
3324
3325         iwl_reset_qos(priv);
3326
3327         iwl_post_associate(priv);
3328
3329
3330         return 0;
3331 }
3332
3333 /*****************************************************************************
3334  *
3335  * sysfs attributes
3336  *
3337  *****************************************************************************/
3338
3339 #ifdef CONFIG_IWLWIFI_DEBUG
3340
3341 /*
3342  * The following adds a new attribute to the sysfs representation
3343  * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
3344  * used for controlling the debug level.
3345  *
3346  * See the level definitions in iwl for details.
3347  */
3348
3349 static ssize_t show_debug_level(struct device *d,
3350                                 struct device_attribute *attr, char *buf)
3351 {
3352         struct iwl_priv *priv = d->driver_data;
3353
3354         return sprintf(buf, "0x%08X\n", priv->debug_level);
3355 }
3356 static ssize_t store_debug_level(struct device *d,
3357                                 struct device_attribute *attr,
3358                                  const char *buf, size_t count)
3359 {
3360         struct iwl_priv *priv = d->driver_data;
3361         unsigned long val;
3362         int ret;
3363
3364         ret = strict_strtoul(buf, 0, &val);
3365         if (ret)
3366                 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
3367         else
3368                 priv->debug_level = val;
3369
3370         return strnlen(buf, count);
3371 }
3372
3373 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3374                         show_debug_level, store_debug_level);
3375
3376
3377 #endif /* CONFIG_IWLWIFI_DEBUG */
3378
3379
3380 static ssize_t show_version(struct device *d,
3381                                 struct device_attribute *attr, char *buf)
3382 {
3383         struct iwl_priv *priv = d->driver_data;
3384         struct iwl_alive_resp *palive = &priv->card_alive;
3385         ssize_t pos = 0;
3386         u16 eeprom_ver;
3387
3388         if (palive->is_valid)
3389                 pos += sprintf(buf + pos,
3390                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3391                                 "fw type: 0x%01X 0x%01X\n",
3392                                 palive->ucode_major, palive->ucode_minor,
3393                                 palive->sw_rev[0], palive->sw_rev[1],
3394                                 palive->ver_type, palive->ver_subtype);
3395         else
3396                 pos += sprintf(buf + pos, "fw not loaded\n");
3397
3398         if (priv->eeprom) {
3399                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3400                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3401                                  eeprom_ver);
3402         } else {
3403                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3404         }
3405
3406         return pos;
3407 }
3408
3409 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3410
3411 static ssize_t show_temperature(struct device *d,
3412                                 struct device_attribute *attr, char *buf)
3413 {
3414         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3415
3416         if (!iwl_is_alive(priv))
3417                 return -EAGAIN;
3418
3419         return sprintf(buf, "%d\n", priv->temperature);
3420 }
3421
3422 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3423
3424 static ssize_t show_tx_power(struct device *d,
3425                              struct device_attribute *attr, char *buf)
3426 {
3427         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3428
3429         if (!iwl_is_ready_rf(priv))
3430                 return sprintf(buf, "off\n");
3431         else
3432                 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3433 }
3434
3435 static ssize_t store_tx_power(struct device *d,
3436                               struct device_attribute *attr,
3437                               const char *buf, size_t count)
3438 {
3439         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3440         unsigned long val;
3441         int ret;
3442
3443         ret = strict_strtoul(buf, 10, &val);
3444         if (ret)
3445                 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
3446         else
3447                 iwl_set_tx_power(priv, val, false);
3448
3449         return count;
3450 }
3451
3452 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3453
3454 static ssize_t show_flags(struct device *d,
3455                           struct device_attribute *attr, char *buf)
3456 {
3457         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3458
3459         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3460 }
3461
3462 static ssize_t store_flags(struct device *d,
3463                            struct device_attribute *attr,
3464                            const char *buf, size_t count)
3465 {
3466         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3467         unsigned long val;
3468         u32 flags;
3469         int ret = strict_strtoul(buf, 0, &val);
3470         if (ret)
3471                 return ret;
3472         flags = (u32)val;
3473
3474         mutex_lock(&priv->mutex);
3475         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3476                 /* Cancel any currently running scans... */
3477                 if (iwl_scan_cancel_timeout(priv, 100))
3478                         IWL_WARN(priv, "Could not cancel scan.\n");
3479                 else {
3480                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3481                         priv->staging_rxon.flags = cpu_to_le32(flags);
3482                         iwl_commit_rxon(priv);
3483                 }
3484         }
3485         mutex_unlock(&priv->mutex);
3486
3487         return count;
3488 }
3489
3490 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3491
3492 static ssize_t show_filter_flags(struct device *d,
3493                                  struct device_attribute *attr, char *buf)
3494 {
3495         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3496
3497         return sprintf(buf, "0x%04X\n",
3498                 le32_to_cpu(priv->active_rxon.filter_flags));
3499 }
3500
3501 static ssize_t store_filter_flags(struct device *d,
3502                                   struct device_attribute *attr,
3503                                   const char *buf, size_t count)
3504 {
3505         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3506         unsigned long val;
3507         u32 filter_flags;
3508         int ret = strict_strtoul(buf, 0, &val);
3509         if (ret)
3510                 return ret;
3511         filter_flags = (u32)val;
3512
3513         mutex_lock(&priv->mutex);
3514         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3515                 /* Cancel any currently running scans... */
3516                 if (iwl_scan_cancel_timeout(priv, 100))
3517                         IWL_WARN(priv, "Could not cancel scan.\n");
3518                 else {
3519                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3520                                        "0x%04X\n", filter_flags);
3521                         priv->staging_rxon.filter_flags =
3522                                 cpu_to_le32(filter_flags);
3523                         iwl_commit_rxon(priv);
3524                 }
3525         }
3526         mutex_unlock(&priv->mutex);
3527
3528         return count;
3529 }
3530
3531 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3532                    store_filter_flags);
3533
3534 static ssize_t store_power_level(struct device *d,
3535                                  struct device_attribute *attr,
3536                                  const char *buf, size_t count)
3537 {
3538         struct iwl_priv *priv = dev_get_drvdata(d);
3539         int ret;
3540         unsigned long mode;
3541
3542
3543         mutex_lock(&priv->mutex);
3544
3545         if (!iwl_is_ready(priv)) {
3546                 ret = -EAGAIN;
3547                 goto out;
3548         }
3549
3550         ret = strict_strtoul(buf, 10, &mode);
3551         if (ret)
3552                 goto out;
3553
3554         ret = iwl_power_set_user_mode(priv, mode);
3555         if (ret) {
3556                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3557                 goto out;
3558         }
3559         ret = count;
3560
3561  out:
3562         mutex_unlock(&priv->mutex);
3563         return ret;
3564 }
3565
3566 static ssize_t show_power_level(struct device *d,
3567                                 struct device_attribute *attr, char *buf)
3568 {
3569         struct iwl_priv *priv = dev_get_drvdata(d);
3570         int mode = priv->power_data.user_power_setting;
3571         int system = priv->power_data.system_power_setting;
3572         int level = priv->power_data.power_mode;
3573         char *p = buf;
3574
3575         switch (system) {
3576         case IWL_POWER_SYS_AUTO:
3577                 p += sprintf(p, "SYSTEM:auto");
3578                 break;
3579         case IWL_POWER_SYS_AC:
3580                 p += sprintf(p, "SYSTEM:ac");
3581                 break;
3582         case IWL_POWER_SYS_BATTERY:
3583                 p += sprintf(p, "SYSTEM:battery");
3584                 break;
3585         }
3586
3587         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3588                         "fixed" : "auto");
3589         p += sprintf(p, "\tINDEX:%d", level);
3590         p += sprintf(p, "\n");
3591         return p - buf + 1;
3592 }
3593
3594 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3595                    store_power_level);
3596
3597
3598 static ssize_t show_statistics(struct device *d,
3599                                struct device_attribute *attr, char *buf)
3600 {
3601         struct iwl_priv *priv = dev_get_drvdata(d);
3602         u32 size = sizeof(struct iwl_notif_statistics);
3603         u32 len = 0, ofs = 0;
3604         u8 *data = (u8 *)&priv->statistics;
3605         int rc = 0;
3606
3607         if (!iwl_is_alive(priv))
3608                 return -EAGAIN;
3609
3610         mutex_lock(&priv->mutex);
3611         rc = iwl_send_statistics_request(priv, 0);
3612         mutex_unlock(&priv->mutex);
3613
3614         if (rc) {
3615                 len = sprintf(buf,
3616                               "Error sending statistics request: 0x%08X\n", rc);
3617                 return len;
3618         }
3619
3620         while (size && (PAGE_SIZE - len)) {
3621                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3622                                    PAGE_SIZE - len, 1);
3623                 len = strlen(buf);
3624                 if (PAGE_SIZE - len)
3625                         buf[len++] = '\n';
3626
3627                 ofs += 16;
3628                 size -= min(size, 16U);
3629         }
3630
3631         return len;
3632 }
3633
3634 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3635
3636
3637 /*****************************************************************************
3638  *
3639  * driver setup and teardown
3640  *
3641  *****************************************************************************/
3642
3643 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3644 {
3645         priv->workqueue = create_workqueue(DRV_NAME);
3646
3647         init_waitqueue_head(&priv->wait_command_queue);
3648
3649         INIT_WORK(&priv->up, iwl_bg_up);
3650         INIT_WORK(&priv->restart, iwl_bg_restart);
3651         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3652         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3653         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3654         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3655         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3656         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3657
3658         iwl_setup_scan_deferred_work(priv);
3659         iwl_setup_power_deferred_work(priv);
3660
3661         if (priv->cfg->ops->lib->setup_deferred_work)
3662                 priv->cfg->ops->lib->setup_deferred_work(priv);
3663
3664         init_timer(&priv->statistics_periodic);
3665         priv->statistics_periodic.data = (unsigned long)priv;
3666         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3667
3668         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3669                      iwl_irq_tasklet, (unsigned long)priv);
3670 }
3671
3672 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3673 {
3674         if (priv->cfg->ops->lib->cancel_deferred_work)
3675                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3676
3677         cancel_delayed_work_sync(&priv->init_alive_start);
3678         cancel_delayed_work(&priv->scan_check);
3679         cancel_delayed_work_sync(&priv->set_power_save);
3680         cancel_delayed_work(&priv->alive_start);
3681         cancel_work_sync(&priv->beacon_update);
3682         del_timer_sync(&priv->statistics_periodic);
3683 }
3684
3685 static struct attribute *iwl_sysfs_entries[] = {
3686         &dev_attr_flags.attr,
3687         &dev_attr_filter_flags.attr,
3688         &dev_attr_power_level.attr,
3689         &dev_attr_statistics.attr,
3690         &dev_attr_temperature.attr,
3691         &dev_attr_tx_power.attr,
3692 #ifdef CONFIG_IWLWIFI_DEBUG
3693         &dev_attr_debug_level.attr,
3694 #endif
3695         &dev_attr_version.attr,
3696
3697         NULL
3698 };
3699
3700 static struct attribute_group iwl_attribute_group = {
3701         .name = NULL,           /* put in device directory */
3702         .attrs = iwl_sysfs_entries,
3703 };
3704
3705 static struct ieee80211_ops iwl_hw_ops = {
3706         .tx = iwl_mac_tx,
3707         .start = iwl_mac_start,
3708         .stop = iwl_mac_stop,
3709         .add_interface = iwl_mac_add_interface,
3710         .remove_interface = iwl_mac_remove_interface,
3711         .config = iwl_mac_config,
3712         .config_interface = iwl_mac_config_interface,
3713         .configure_filter = iwl_configure_filter,
3714         .set_key = iwl_mac_set_key,
3715         .update_tkip_key = iwl_mac_update_tkip_key,
3716         .get_stats = iwl_mac_get_stats,
3717         .get_tx_stats = iwl_mac_get_tx_stats,
3718         .conf_tx = iwl_mac_conf_tx,
3719         .reset_tsf = iwl_mac_reset_tsf,
3720         .bss_info_changed = iwl_bss_info_changed,
3721         .ampdu_action = iwl_mac_ampdu_action,
3722         .hw_scan = iwl_mac_hw_scan
3723 };
3724
3725 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3726 {
3727         int err = 0;
3728         struct iwl_priv *priv;
3729         struct ieee80211_hw *hw;
3730         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3731         unsigned long flags;
3732
3733         /************************
3734          * 1. Allocating HW data
3735          ************************/
3736
3737         /* Disabling hardware scan means that mac80211 will perform scans
3738          * "the hard way", rather than using device's scan. */
3739         if (cfg->mod_params->disable_hw_scan) {
3740                 if (cfg->mod_params->debug & IWL_DL_INFO)
3741                         dev_printk(KERN_DEBUG, &(pdev->dev),
3742                                    "Disabling hw_scan\n");
3743                 iwl_hw_ops.hw_scan = NULL;
3744         }
3745
3746         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3747         if (!hw) {
3748                 err = -ENOMEM;
3749                 goto out;
3750         }
3751         priv = hw->priv;
3752         /* At this point both hw and priv are allocated. */
3753
3754         SET_IEEE80211_DEV(hw, &pdev->dev);
3755
3756         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3757         priv->cfg = cfg;
3758         priv->pci_dev = pdev;
3759
3760 #ifdef CONFIG_IWLWIFI_DEBUG
3761         priv->debug_level = priv->cfg->mod_params->debug;
3762         atomic_set(&priv->restrict_refcnt, 0);
3763 #endif
3764
3765         /**************************
3766          * 2. Initializing PCI bus
3767          **************************/
3768         if (pci_enable_device(pdev)) {
3769                 err = -ENODEV;
3770                 goto out_ieee80211_free_hw;
3771         }
3772
3773         pci_set_master(pdev);
3774
3775         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3776         if (!err)
3777                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3778         if (err) {
3779                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3780                 if (!err)
3781                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3782                 /* both attempts failed: */
3783                 if (err) {
3784                         IWL_WARN(priv, "No suitable DMA available.\n");
3785                         goto out_pci_disable_device;
3786                 }
3787         }
3788
3789         err = pci_request_regions(pdev, DRV_NAME);
3790         if (err)
3791                 goto out_pci_disable_device;
3792
3793         pci_set_drvdata(pdev, priv);
3794
3795
3796         /***********************
3797          * 3. Read REV register
3798          ***********************/
3799         priv->hw_base = pci_iomap(pdev, 0, 0);
3800         if (!priv->hw_base) {
3801                 err = -ENODEV;
3802                 goto out_pci_release_regions;
3803         }
3804
3805         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3806                 (unsigned long long) pci_resource_len(pdev, 0));
3807         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3808
3809         iwl_hw_detect(priv);
3810         IWL_INFO(priv, "Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3811                 priv->cfg->name, priv->hw_rev);
3812
3813         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3814          * PCI Tx retries from interfering with C3 CPU state */
3815         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3816
3817         /* amp init */
3818         err = priv->cfg->ops->lib->apm_ops.init(priv);
3819         if (err < 0) {
3820                 IWL_DEBUG_INFO("Failed to init APMG\n");
3821                 goto out_iounmap;
3822         }
3823         /*****************
3824          * 4. Read EEPROM
3825          *****************/
3826         /* Read the EEPROM */
3827         err = iwl_eeprom_init(priv);
3828         if (err) {
3829                 IWL_ERR(priv, "Unable to init EEPROM\n");
3830                 goto out_iounmap;
3831         }
3832         err = iwl_eeprom_check_version(priv);
3833         if (err)
3834                 goto out_iounmap;
3835
3836         /* extract MAC Address */
3837         iwl_eeprom_get_mac(priv, priv->mac_addr);
3838         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3839         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3840
3841         /************************
3842          * 5. Setup HW constants
3843          ************************/
3844         if (iwl_set_hw_params(priv)) {
3845                 IWL_ERR(priv, "failed to set hw parameters\n");
3846                 goto out_free_eeprom;
3847         }
3848
3849         /*******************
3850          * 6. Setup priv
3851          *******************/
3852
3853         err = iwl_init_drv(priv);
3854         if (err)
3855                 goto out_free_eeprom;
3856         /* At this point both hw and priv are initialized. */
3857
3858         /**********************************
3859          * 7. Initialize module parameters
3860          **********************************/
3861
3862         /* Disable radio (SW RF KILL) via parameter when loading driver */
3863         if (priv->cfg->mod_params->disable) {
3864                 set_bit(STATUS_RF_KILL_SW, &priv->status);
3865                 IWL_DEBUG_INFO("Radio disabled.\n");
3866         }
3867
3868         /********************
3869          * 8. Setup services
3870          ********************/
3871         spin_lock_irqsave(&priv->lock, flags);
3872         iwl_disable_interrupts(priv);
3873         spin_unlock_irqrestore(&priv->lock, flags);
3874
3875         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
3876         if (err) {
3877                 IWL_ERR(priv, "failed to create sysfs device attributes\n");
3878                 goto out_uninit_drv;
3879         }
3880
3881
3882         iwl_setup_deferred_work(priv);
3883         iwl_setup_rx_handlers(priv);
3884
3885         /********************
3886          * 9. Conclude
3887          ********************/
3888         pci_save_state(pdev);
3889         pci_disable_device(pdev);
3890
3891         /**********************************
3892          * 10. Setup and register mac80211
3893          **********************************/
3894
3895         err = iwl_setup_mac(priv);
3896         if (err)
3897                 goto out_remove_sysfs;
3898
3899         err = iwl_dbgfs_register(priv, DRV_NAME);
3900         if (err)
3901                 IWL_ERR(priv, "failed to create debugfs files\n");
3902
3903         err = iwl_rfkill_init(priv);
3904         if (err)
3905                 IWL_ERR(priv, "Unable to initialize RFKILL system. "
3906                                   "Ignoring error: %d\n", err);
3907         iwl_power_initialize(priv);
3908         return 0;
3909
3910  out_remove_sysfs:
3911         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3912  out_uninit_drv:
3913         iwl_uninit_drv(priv);
3914  out_free_eeprom:
3915         iwl_eeprom_free(priv);
3916  out_iounmap:
3917         pci_iounmap(pdev, priv->hw_base);
3918  out_pci_release_regions:
3919         pci_release_regions(pdev);
3920         pci_set_drvdata(pdev, NULL);
3921  out_pci_disable_device:
3922         pci_disable_device(pdev);
3923  out_ieee80211_free_hw:
3924         ieee80211_free_hw(priv->hw);
3925  out:
3926         return err;
3927 }
3928
3929 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
3930 {
3931         struct iwl_priv *priv = pci_get_drvdata(pdev);
3932         unsigned long flags;
3933
3934         if (!priv)
3935                 return;
3936
3937         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
3938
3939         iwl_dbgfs_unregister(priv);
3940         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
3941
3942         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3943          * to be called and iwl_down since we are removing the device
3944          * we need to set STATUS_EXIT_PENDING bit.
3945          */
3946         set_bit(STATUS_EXIT_PENDING, &priv->status);
3947         if (priv->mac80211_registered) {
3948                 ieee80211_unregister_hw(priv->hw);
3949                 priv->mac80211_registered = 0;
3950         } else {
3951                 iwl_down(priv);
3952         }
3953
3954         /* make sure we flush any pending irq or
3955          * tasklet for the driver
3956          */
3957         spin_lock_irqsave(&priv->lock, flags);
3958         iwl_disable_interrupts(priv);
3959         spin_unlock_irqrestore(&priv->lock, flags);
3960
3961         iwl_synchronize_irq(priv);
3962
3963         iwl_rfkill_unregister(priv);
3964         iwl_dealloc_ucode_pci(priv);
3965
3966         if (priv->rxq.bd)
3967                 iwl_rx_queue_free(priv, &priv->rxq);
3968         iwl_hw_txq_ctx_free(priv);
3969
3970         iwl_clear_stations_table(priv);
3971         iwl_eeprom_free(priv);
3972
3973
3974         /*netif_stop_queue(dev); */
3975         flush_workqueue(priv->workqueue);
3976
3977         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3978          * priv->workqueue... so we can't take down the workqueue
3979          * until now... */
3980         destroy_workqueue(priv->workqueue);
3981         priv->workqueue = NULL;
3982
3983         pci_iounmap(pdev, priv->hw_base);
3984         pci_release_regions(pdev);
3985         pci_disable_device(pdev);
3986         pci_set_drvdata(pdev, NULL);
3987
3988         iwl_uninit_drv(priv);
3989
3990         if (priv->ibss_beacon)
3991                 dev_kfree_skb(priv->ibss_beacon);
3992
3993         ieee80211_free_hw(priv->hw);
3994 }
3995
3996 #ifdef CONFIG_PM
3997
3998 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
3999 {
4000         struct iwl_priv *priv = pci_get_drvdata(pdev);
4001
4002         if (priv->is_open) {
4003                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4004                 iwl_mac_stop(priv->hw);
4005                 priv->is_open = 1;
4006         }
4007
4008         pci_set_power_state(pdev, PCI_D3hot);
4009
4010         return 0;
4011 }
4012
4013 static int iwl_pci_resume(struct pci_dev *pdev)
4014 {
4015         struct iwl_priv *priv = pci_get_drvdata(pdev);
4016
4017         pci_set_power_state(pdev, PCI_D0);
4018
4019         if (priv->is_open)
4020                 iwl_mac_start(priv->hw);
4021
4022         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4023         return 0;
4024 }
4025
4026 #endif /* CONFIG_PM */
4027
4028 /*****************************************************************************
4029  *
4030  * driver and module entry point
4031  *
4032  *****************************************************************************/
4033
4034 /* Hardware specific file defines the PCI IDs table for that hardware module */
4035 static struct pci_device_id iwl_hw_card_ids[] = {
4036 #ifdef CONFIG_IWL4965
4037         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4038         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4039 #endif /* CONFIG_IWL4965 */
4040 #ifdef CONFIG_IWL5000
4041         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4042         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4043         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4044         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4045         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4046         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4047         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4048         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4049         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4050         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4051 /* 5350 WiFi/WiMax */
4052         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4053         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4054         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4055 /* 5150 Wifi/WiMax */
4056         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4057         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4058 #endif /* CONFIG_IWL5000 */
4059
4060         {0}
4061 };
4062 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4063
4064 static struct pci_driver iwl_driver = {
4065         .name = DRV_NAME,
4066         .id_table = iwl_hw_card_ids,
4067         .probe = iwl_pci_probe,
4068         .remove = __devexit_p(iwl_pci_remove),
4069 #ifdef CONFIG_PM
4070         .suspend = iwl_pci_suspend,
4071         .resume = iwl_pci_resume,
4072 #endif
4073 };
4074
4075 static int __init iwl_init(void)
4076 {
4077
4078         int ret;
4079         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4080         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4081
4082         ret = iwlagn_rate_control_register();
4083         if (ret) {
4084                 printk(KERN_ERR DRV_NAME
4085                        "Unable to register rate control algorithm: %d\n", ret);
4086                 return ret;
4087         }
4088
4089         ret = pci_register_driver(&iwl_driver);
4090         if (ret) {
4091                 printk(KERN_ERR DRV_NAME "Unable to initialize PCI module\n");
4092                 goto error_register;
4093         }
4094
4095         return ret;
4096
4097 error_register:
4098         iwlagn_rate_control_unregister();
4099         return ret;
4100 }
4101
4102 static void __exit iwl_exit(void)
4103 {
4104         pci_unregister_driver(&iwl_driver);
4105         iwlagn_rate_control_unregister();
4106 }
4107
4108 module_exit(iwl_exit);
4109 module_init(iwl_init);