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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 211                 return 1;
 212
 213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 214          * be updated with the RXON_ASSOC command -- however only some
 215          * flag transitions are allowed using RXON_ASSOC */
 216
 217         /* Check if we are not switching bands */
 218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 220                 return 1;
 221
 222         /* Check if we are switching association toggle */
 223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 225                 return 1;
 226
 227         return 0;
 228 }
 229
 230 /**
 231  * iwl_commit_rxon - commit staging_rxon to hardware
 232  *
 233  * The RXON command in staging_rxon is committed to the hardware and
 234  * the active_rxon structure is updated with the new data.  This
 235  * function correctly transitions out of the RXON_ASSOC_MSK state if
 236  * a HW tune is required based on the RXON structure changes.
 237  */
 238 static int iwl_commit_rxon(struct iwl_priv *priv)
 239 {
 240         /* cast away the const for active_rxon in this function */
 241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 242         int ret;
 243         bool new_assoc =
 244                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 245
 246         if (!iwl_is_alive(priv))
 247                 return -EBUSY;
 248
 249         /* always get timestamp with Rx frame */
 250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 251         /* allow CTS-to-self if possible. this is relevant only for
 252          * 5000, but will not damage 4965 */
 253         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 254
 255         ret = iwl_check_rxon_cmd(&priv->staging_rxon);
 256         if (ret) {
 257                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 258                 return -EINVAL;
 259         }
 260
 261         /* If we don't need to send a full RXON, we can use
 262          * iwl_rxon_assoc_cmd which is used to reconfigure filter
 263          * and other flags for the current radio configuration. */
 264         if (!iwl_full_rxon_required(priv)) {
 265                 ret = iwl_send_rxon_assoc(priv);
 266                 if (ret) {
 267                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 268                         return ret;
 269                 }
 270
 271                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 272                 return 0;
 273         }
 274
 275         /* station table will be cleared */
 276         priv->assoc_station_added = 0;
 277
 278         /* If we are currently associated and the new config requires
 279          * an RXON_ASSOC and the new config wants the associated mask enabled,
 280          * we must clear the associated from the active configuration
 281          * before we apply the new config */
 282         if (iwl_is_associated(priv) && new_assoc) {
 283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 285
 286                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 287                                       sizeof(struct iwl_rxon_cmd),
 288                                       &priv->active_rxon);
 289
 290                 /* If the mask clearing failed then we set
 291                  * active_rxon back to what it was previously */
 292                 if (ret) {
 293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 294                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 295                         return ret;
 296                 }
 297         }
 298
 299         IWL_DEBUG_INFO("Sending RXON\n"
 300                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 301                        "* channel = %d\n"
 302                        "* bssid = %pM\n",
 303                        (new_assoc ? "" : "out"),
 304                        le16_to_cpu(priv->staging_rxon.channel),
 305                        priv->staging_rxon.bssid_addr);
 306
 307         iwl_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 308
 309         /* Apply the new configuration
 310          * RXON unassoc clears the station table in uCode, send it before
 311          * we add the bcast station. If assoc bit is set, we will send RXON
 312          * after having added the bcast and bssid station.
 313          */
 314         if (!new_assoc) {
 315                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 316                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 317                 if (ret) {
 318                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 319                         return ret;
 320                 }
 321                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 322         }
 323
 324         iwl_clear_stations_table(priv);
 325
 326         if (!priv->error_recovering)
 327                 priv->start_calib = 0;
 328
 329         /* Add the broadcast address so we can send broadcast frames */
 330         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 331                                                 IWL_INVALID_STATION) {
 332                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 333                 return -EIO;
 334         }
 335
 336         /* If we have set the ASSOC_MSK and we are in BSS mode then
 337          * add the IWL_AP_ID to the station rate table */
 338         if (new_assoc) {
 339                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 340                         ret = iwl_rxon_add_station(priv,
 341                                            priv->active_rxon.bssid_addr, 1);
 342                         if (ret == IWL_INVALID_STATION) {
 343                                 IWL_ERROR("Error adding AP address for TX.\n");
 344                                 return -EIO;
 345                         }
 346                         priv->assoc_station_added = 1;
 347                         if (priv->default_wep_key &&
 348                             iwl_send_static_wepkey_cmd(priv, 0))
 349                                 IWL_ERROR("Could not send WEP static key.\n");
 350                 }
 351
 352                 /* Apply the new configuration
 353                  * RXON assoc doesn't clear the station table in uCode,
 354                  */
 355                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 356                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 357                 if (ret) {
 358                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 359                         return ret;
 360                 }
 361                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 362         }
 363
 364         iwl_init_sensitivity(priv);
 365
 366         /* If we issue a new RXON command which required a tune then we must
 367          * send a new TXPOWER command or we won't be able to Tx any frames */
 368         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 369         if (ret) {
 370                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 371                 return ret;
 372         }
 373
 374         return 0;
 375 }
 376
 377 void iwl_update_chain_flags(struct iwl_priv *priv)
 378 {
 379
 380         iwl_set_rxon_chain(priv);
 381         iwl_commit_rxon(priv);
 382 }
 383
 384 static int iwl_send_bt_config(struct iwl_priv *priv)
 385 {
 386         struct iwl4965_bt_cmd bt_cmd = {
 387                 .flags = 3,
 388                 .lead_time = 0xAA,
 389                 .max_kill = 1,
 390                 .kill_ack_mask = 0,
 391                 .kill_cts_mask = 0,
 392         };
 393
 394         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 395                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 396 }
 397
 398 static void iwl_clear_free_frames(struct iwl_priv *priv)
 399 {
 400         struct list_head *element;
 401
 402         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 403                        priv->frames_count);
 404
 405         while (!list_empty(&priv->free_frames)) {
 406                 element = priv->free_frames.next;
 407                 list_del(element);
 408                 kfree(list_entry(element, struct iwl_frame, list));
 409                 priv->frames_count--;
 410         }
 411
 412         if (priv->frames_count) {
 413                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 414                             priv->frames_count);
 415                 priv->frames_count = 0;
 416         }
 417 }
 418
 419 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 420 {
 421         struct iwl_frame *frame;
 422         struct list_head *element;
 423         if (list_empty(&priv->free_frames)) {
 424                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 425                 if (!frame) {
 426                         IWL_ERROR("Could not allocate frame!\n");
 427                         return NULL;
 428                 }
 429
 430                 priv->frames_count++;
 431                 return frame;
 432         }
 433
 434         element = priv->free_frames.next;
 435         list_del(element);
 436         return list_entry(element, struct iwl_frame, list);
 437 }
 438
 439 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 440 {
 441         memset(frame, 0, sizeof(*frame));
 442         list_add(&frame->list, &priv->free_frames);
 443 }
 444
 445 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 446                                           struct ieee80211_hdr *hdr,
 447                                           const u8 *dest, int left)
 448 {
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 451              (priv->iw_mode != NL80211_IFTYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & IWL_CCK_RATES_MASK;
 470         else
 471                 rate_mask = priv->active_rate_basic & IWL_OFDM_RATES_MASK;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static unsigned int iwl_hw_get_beacon_cmd(struct iwl_priv *priv,
 488                                        struct iwl_frame *frame, u8 rate)
 489 {
 490         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 491         unsigned int frame_size;
 492
 493         tx_beacon_cmd = &frame->u.beacon;
 494         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 495
 496         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 497         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 498
 499         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 500                                 iwl_bcast_addr,
 501                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 502
 503         BUG_ON(frame_size > MAX_MPDU_SIZE);
 504         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 505
 506         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 507                 tx_beacon_cmd->tx.rate_n_flags =
 508                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 509         else
 510                 tx_beacon_cmd->tx.rate_n_flags =
 511                         iwl_hw_set_rate_n_flags(rate, 0);
 512
 513         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 514                                      TX_CMD_FLG_TSF_MSK |
 515                                      TX_CMD_FLG_STA_RATE_MSK;
 516
 517         return sizeof(*tx_beacon_cmd) + frame_size;
 518 }
 519 static int iwl_send_beacon_cmd(struct iwl_priv *priv)
 520 {
 521         struct iwl_frame *frame;
 522         unsigned int frame_size;
 523         int rc;
 524         u8 rate;
 525
 526         frame = iwl_get_free_frame(priv);
 527
 528         if (!frame) {
 529                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 530                           "command.\n");
 531                 return -ENOMEM;
 532         }
 533
 534         rate = iwl_rate_get_lowest_plcp(priv);
 535
 536         frame_size = iwl_hw_get_beacon_cmd(priv, frame, rate);
 537
 538         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 539                               &frame->u.cmd[0]);
 540
 541         iwl_free_frame(priv, frame);
 542
 543         return rc;
 544 }
 545
 546 /******************************************************************************
 547  *
 548  * Misc. internal state and helper functions
 549  *
 550  ******************************************************************************/
 551
 552 static void iwl_ht_conf(struct iwl_priv *priv,
 553                             struct ieee80211_bss_conf *bss_conf)
 554 {
 555         struct ieee80211_sta_ht_cap *ht_conf;
 556         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 557         struct ieee80211_sta *sta;
 558
 559         IWL_DEBUG_MAC80211("enter: \n");
 560
 561         if (!iwl_conf->is_ht)
 562                 return;
 563
 564
 565         /*
 566          * It is totally wrong to base global information on something
 567          * that is valid only when associated, alas, this driver works
 568          * that way and I don't know how to fix it.
 569          */
 570
 571         rcu_read_lock();
 572         sta = ieee80211_find_sta(priv->hw, priv->bssid);
 573         if (!sta) {
 574                 rcu_read_unlock();
 575                 return;
 576         }
 577         ht_conf = &sta->ht_cap;
 578
 579         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 580                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 581         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 582                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 583
 584         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 585         iwl_conf->max_amsdu_size =
 586                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 587
 588         iwl_conf->supported_chan_width =
 589                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
 590
 591         iwl_conf->extension_chan_offset = bss_conf->ht.secondary_channel_offset;
 592         /* If no above or below channel supplied disable FAT channel */
 593         if (iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_ABOVE &&
 594             iwl_conf->extension_chan_offset != IEEE80211_HT_PARAM_CHA_SEC_BELOW) {
 595                 iwl_conf->extension_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
 596                 iwl_conf->supported_chan_width = 0;
 597         }
 598
 599         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 600
 601         memcpy(&iwl_conf->mcs, &ht_conf->mcs, 16);
 602
 603         iwl_conf->tx_chan_width = bss_conf->ht.width_40_ok;
 604         iwl_conf->ht_protection =
 605                 bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_PROTECTION;
 606         iwl_conf->non_GF_STA_present =
 607                 !!(bss_conf->ht.operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
 608
 609         rcu_read_unlock();
 610
 611         IWL_DEBUG_MAC80211("leave\n");
 612 }
 613
 614 /*
 615  * QoS  support
 616 */
 617 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 618 {
 619         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 620                 return;
 621
 622         if (!priv->qos_data.qos_enable)
 623                 return;
 624
 625         priv->qos_data.def_qos_parm.qos_flags = 0;
 626
 627         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 628             !priv->qos_data.qos_cap.q_AP.txop_request)
 629                 priv->qos_data.def_qos_parm.qos_flags |=
 630                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 631         if (priv->qos_data.qos_active)
 632                 priv->qos_data.def_qos_parm.qos_flags |=
 633                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 634
 635         if (priv->current_ht_config.is_ht)
 636                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 637
 638         if (force || iwl_is_associated(priv)) {
 639                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 640                                 priv->qos_data.qos_active,
 641                                 priv->qos_data.def_qos_parm.qos_flags);
 642
 643                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 644                                        sizeof(struct iwl_qosparam_cmd),
 645                                        &priv->qos_data.def_qos_parm, NULL);
 646         }
 647 }
 648
 649 #define MAX_UCODE_BEACON_INTERVAL       4096
 650
 651 static u16 iwl_adjust_beacon_interval(u16 beacon_val)
 652 {
 653         u16 new_val = 0;
 654         u16 beacon_factor = 0;
 655
 656         beacon_factor = (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 657                                         / MAX_UCODE_BEACON_INTERVAL;
 658         new_val = beacon_val / beacon_factor;
 659
 660         return new_val;
 661 }
 662
 663 static void iwl_setup_rxon_timing(struct iwl_priv *priv)
 664 {
 665         u64 tsf;
 666         s32 interval_tm, rem;
 667         unsigned long flags;
 668         struct ieee80211_conf *conf = NULL;
 669         u16 beacon_int = 0;
 670
 671         conf = ieee80211_get_hw_conf(priv->hw);
 672
 673         spin_lock_irqsave(&priv->lock, flags);
 674         priv->rxon_timing.timestamp = cpu_to_le64(priv->timestamp);
 675         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 676
 677         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 678                 beacon_int = iwl_adjust_beacon_interval(priv->beacon_int);
 679                 priv->rxon_timing.atim_window = 0;
 680         } else {
 681                 beacon_int = iwl_adjust_beacon_interval(conf->beacon_int);
 682
 683                 /* TODO: we need to get atim_window from upper stack
 684                  * for now we set to 0 */
 685                 priv->rxon_timing.atim_window = 0;
 686         }
 687
 688         priv->rxon_timing.beacon_interval = cpu_to_le16(beacon_int);
 689
 690         tsf = priv->timestamp; /* tsf is modifed by do_div: copy it */
 691         interval_tm = beacon_int * 1024;
 692         rem = do_div(tsf, interval_tm);
 693         priv->rxon_timing.beacon_init_val = cpu_to_le32(interval_tm - rem);
 694
 695         spin_unlock_irqrestore(&priv->lock, flags);
 696         IWL_DEBUG_ASSOC("beacon interval %d beacon timer %d beacon tim %d\n",
 697                         le16_to_cpu(priv->rxon_timing.beacon_interval),
 698                         le32_to_cpu(priv->rxon_timing.beacon_init_val),
 699                         le16_to_cpu(priv->rxon_timing.atim_window));
 700 }
 701
 702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 703                                    enum ieee80211_band band)
 704 {
 705         if (band == IEEE80211_BAND_5GHZ) {
 706                 priv->staging_rxon.flags &=
 707                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 708                       | RXON_FLG_CCK_MSK);
 709                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 710         } else {
 711                 /* Copied from iwl_post_associate() */
 712                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 713                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 714                 else
 715                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 716
 717                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 718                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 719
 720                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 721                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 722                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 723         }
 724 }
 725
 726 /*
 727  * initialize rxon structure with default values from eeprom
 728  */
 729 static void iwl_connection_init_rx_config(struct iwl_priv *priv, int mode)
 730 {
 731         const struct iwl_channel_info *ch_info;
 732
 733         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 734
 735         switch (mode) {
 736         case NL80211_IFTYPE_AP:
 737                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 738                 break;
 739
 740         case NL80211_IFTYPE_STATION:
 741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 742                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 743                 break;
 744
 745         case NL80211_IFTYPE_ADHOC:
 746                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 747                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 748                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 749                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case NL80211_IFTYPE_MONITOR:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 754                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 755                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 756                 break;
 757         default:
 758                 IWL_ERROR("Unsupported interface type %d\n", mode);
 759                 break;
 760         }
 761
 762 #if 0
 763         /* TODO:  Figure out when short_preamble would be set and cache from
 764          * that */
 765         if (!hw_to_local(priv->hw)->short_preamble)
 766                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 767         else
 768                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 769 #endif
 770
 771         ch_info = iwl_get_channel_info(priv, priv->band,
 772                                        le16_to_cpu(priv->active_rxon.channel));
 773
 774         if (!ch_info)
 775                 ch_info = &priv->channel_info[0];
 776
 777         /*
 778          * in some case A channels are all non IBSS
 779          * in this case force B/G channel
 780          */
 781         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 782             !(is_channel_ibss(ch_info)))
 783                 ch_info = &priv->channel_info[0];
 784
 785         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 786         priv->band = ch_info->band;
 787
 788         iwl_set_flags_for_band(priv, priv->band);
 789
 790         priv->staging_rxon.ofdm_basic_rates =
 791             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 792         priv->staging_rxon.cck_basic_rates =
 793             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 796                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 798         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 799         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 800         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 801         iwl_set_rxon_chain(priv);
 802 }
 803
 804 static int iwl_set_mode(struct iwl_priv *priv, int mode)
 805 {
 806         iwl_connection_init_rx_config(priv, mode);
 807         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 808
 809         iwl_clear_stations_table(priv);
 810
 811         /* dont commit rxon if rf-kill is on*/
 812         if (!iwl_is_ready_rf(priv))
 813                 return -EAGAIN;
 814
 815         cancel_delayed_work(&priv->scan_check);
 816         if (iwl_scan_cancel_timeout(priv, 100)) {
 817                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 818                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 819                 return -EAGAIN;
 820         }
 821
 822         iwl_commit_rxon(priv);
 823
 824         return 0;
 825 }
 826
 827 static void iwl_set_rate(struct iwl_priv *priv)
 828 {
 829         const struct ieee80211_supported_band *hw = NULL;
 830         struct ieee80211_rate *rate;
 831         int i;
 832
 833         hw = iwl_get_hw_mode(priv, priv->band);
 834         if (!hw) {
 835                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 836                 return;
 837         }
 838
 839         priv->active_rate = 0;
 840         priv->active_rate_basic = 0;
 841
 842         for (i = 0; i < hw->n_bitrates; i++) {
 843                 rate = &(hw->bitrates[i]);
 844                 if (rate->hw_value < IWL_RATE_COUNT)
 845                         priv->active_rate |= (1 << rate->hw_value);
 846         }
 847
 848         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 849                        priv->active_rate, priv->active_rate_basic);
 850
 851         /*
 852          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 853          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 854          * OFDM
 855          */
 856         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 857                 priv->staging_rxon.cck_basic_rates =
 858                     ((priv->active_rate_basic &
 859                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 860         else
 861                 priv->staging_rxon.cck_basic_rates =
 862                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 863
 864         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 865                 priv->staging_rxon.ofdm_basic_rates =
 866                     ((priv->active_rate_basic &
 867                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 868                       IWL_FIRST_OFDM_RATE) & 0xFF;
 869         else
 870                 priv->staging_rxon.ofdm_basic_rates =
 871                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 872 }
 873
 874
 875 /******************************************************************************
 876  *
 877  * Generic RX handler implementations
 878  *
 879  ******************************************************************************/
 880 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 881                                 struct iwl_rx_mem_buffer *rxb)
 882 {
 883         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 884         struct iwl_alive_resp *palive;
 885         struct delayed_work *pwork;
 886
 887         palive = &pkt->u.alive_frame;
 888
 889         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
 890                        "0x%01X 0x%01X\n",
 891                        palive->is_valid, palive->ver_type,
 892                        palive->ver_subtype);
 893
 894         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
 895                 IWL_DEBUG_INFO("Initialization Alive received.\n");
 896                 memcpy(&priv->card_alive_init,
 897                        &pkt->u.alive_frame,
 898                        sizeof(struct iwl_init_alive_resp));
 899                 pwork = &priv->init_alive_start;
 900         } else {
 901                 IWL_DEBUG_INFO("Runtime Alive received.\n");
 902                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
 903                        sizeof(struct iwl_alive_resp));
 904                 pwork = &priv->alive_start;
 905         }
 906
 907         /* We delay the ALIVE response by 5ms to
 908          * give the HW RF Kill time to activate... */
 909         if (palive->is_valid == UCODE_VALID_OK)
 910                 queue_delayed_work(priv->workqueue, pwork,
 911                                    msecs_to_jiffies(5));
 912         else
 913                 IWL_WARNING("uCode did not respond OK.\n");
 914 }
 915
 916 static void iwl_rx_reply_error(struct iwl_priv *priv,
 917                                    struct iwl_rx_mem_buffer *rxb)
 918 {
 919         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 920
 921         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
 922                 "seq 0x%04X ser 0x%08X\n",
 923                 le32_to_cpu(pkt->u.err_resp.error_type),
 924                 get_cmd_string(pkt->u.err_resp.cmd_id),
 925                 pkt->u.err_resp.cmd_id,
 926                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
 927                 le32_to_cpu(pkt->u.err_resp.error_info));
 928 }
 929
 930 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 931
 932 static void iwl_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
 933 {
 934         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 935         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
 936         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
 937         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
 938                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
 939         rxon->channel = csa->channel;
 940         priv->staging_rxon.channel = csa->channel;
 941 }
 942
 943 static void iwl_rx_pm_sleep_notif(struct iwl_priv *priv,
 944                                       struct iwl_rx_mem_buffer *rxb)
 945 {
 946 #ifdef CONFIG_IWLWIFI_DEBUG
 947         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 948         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
 949         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
 950                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
 951 #endif
 952 }
 953
 954 static void iwl_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
 955                                              struct iwl_rx_mem_buffer *rxb)
 956 {
 957         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 958         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
 959                         "notification for %s:\n",
 960                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
 961         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
 962 }
 963
 964 static void iwl_bg_beacon_update(struct work_struct *work)
 965 {
 966         struct iwl_priv *priv =
 967                 container_of(work, struct iwl_priv, beacon_update);
 968         struct sk_buff *beacon;
 969
 970         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
 971         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
 972
 973         if (!beacon) {
 974                 IWL_ERROR("update beacon failed\n");
 975                 return;
 976         }
 977
 978         mutex_lock(&priv->mutex);
 979         /* new beacon skb is allocated every time; dispose previous.*/
 980         if (priv->ibss_beacon)
 981                 dev_kfree_skb(priv->ibss_beacon);
 982
 983         priv->ibss_beacon = beacon;
 984         mutex_unlock(&priv->mutex);
 985
 986         iwl_send_beacon_cmd(priv);
 987 }
 988
 989 /**
 990  * iwl_bg_statistics_periodic - Timer callback to queue statistics
 991  *
 992  * This callback is provided in order to send a statistics request.
 993  *
 994  * This timer function is continually reset to execute within
 995  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
 996  * was received.  We need to ensure we receive the statistics in order
 997  * to update the temperature used for calibrating the TXPOWER.
 998  */
 999 static void iwl_bg_statistics_periodic(unsigned long data)
1000 {
1001         struct iwl_priv *priv = (struct iwl_priv *)data;
1002
1003         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1004                 return;
1005
1006         /* dont send host command if rf-kill is on */
1007         if (!iwl_is_ready_rf(priv))
1008                 return;
1009
1010         iwl_send_statistics_request(priv, CMD_ASYNC);
1011 }
1012
1013 static void iwl_rx_beacon_notif(struct iwl_priv *priv,
1014                                 struct iwl_rx_mem_buffer *rxb)
1015 {
1016 #ifdef CONFIG_IWLWIFI_DEBUG
1017         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1018         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1019         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1020
1021         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1022                 "tsf %d %d rate %d\n",
1023                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1024                 beacon->beacon_notify_hdr.failure_frame,
1025                 le32_to_cpu(beacon->ibss_mgr_status),
1026                 le32_to_cpu(beacon->high_tsf),
1027                 le32_to_cpu(beacon->low_tsf), rate);
1028 #endif
1029
1030         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1031             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1032                 queue_work(priv->workqueue, &priv->beacon_update);
1033 }
1034
1035 /* Handle notification from uCode that card's power state is changing
1036  * due to software, hardware, or critical temperature RFKILL */
1037 static void iwl_rx_card_state_notif(struct iwl_priv *priv,
1038                                     struct iwl_rx_mem_buffer *rxb)
1039 {
1040         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1041         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1042         unsigned long status = priv->status;
1043
1044         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1045                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1046                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1047
1048         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1049                      RF_CARD_DISABLED)) {
1050
1051                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1052                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1053
1054                 if (!iwl_grab_nic_access(priv)) {
1055                         iwl_write_direct32(
1056                                 priv, HBUS_TARG_MBX_C,
1057                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1058
1059                         iwl_release_nic_access(priv);
1060                 }
1061
1062                 if (!(flags & RXON_CARD_DISABLED)) {
1063                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1064                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1065                         if (!iwl_grab_nic_access(priv)) {
1066                                 iwl_write_direct32(
1067                                         priv, HBUS_TARG_MBX_C,
1068                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1069
1070                                 iwl_release_nic_access(priv);
1071                         }
1072                 }
1073
1074                 if (flags & RF_CARD_DISABLED) {
1075                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1076                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1077                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1078                         if (!iwl_grab_nic_access(priv))
1079                                 iwl_release_nic_access(priv);
1080                 }
1081         }
1082
1083         if (flags & HW_CARD_DISABLED)
1084                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1085         else
1086                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1087
1088
1089         if (flags & SW_CARD_DISABLED)
1090                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1091         else
1092                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1093
1094         if (!(flags & RXON_CARD_DISABLED))
1095                 iwl_scan_cancel(priv);
1096
1097         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1098              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1099             (test_bit(STATUS_RF_KILL_SW, &status) !=
1100              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1101                 queue_work(priv->workqueue, &priv->rf_kill);
1102         else
1103                 wake_up_interruptible(&priv->wait_command_queue);
1104 }
1105
1106 int iwl_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1107 {
1108         int ret;
1109         unsigned long flags;
1110
1111         spin_lock_irqsave(&priv->lock, flags);
1112         ret = iwl_grab_nic_access(priv);
1113         if (ret)
1114                 goto err;
1115
1116         if (src == IWL_PWR_SRC_VAUX) {
1117                 u32 val;
1118                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1119                                             &val);
1120
1121                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1122                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1123                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1124                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1125         } else {
1126                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1127                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1128                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1129         }
1130
1131         iwl_release_nic_access(priv);
1132 err:
1133         spin_unlock_irqrestore(&priv->lock, flags);
1134         return ret;
1135 }
1136
1137 /**
1138  * iwl_setup_rx_handlers - Initialize Rx handler callbacks
1139  *
1140  * Setup the RX handlers for each of the reply types sent from the uCode
1141  * to the host.
1142  *
1143  * This function chains into the hardware specific files for them to setup
1144  * any hardware specific handlers as well.
1145  */
1146 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1147 {
1148         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1149         priv->rx_handlers[REPLY_ERROR] = iwl_rx_reply_error;
1150         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl_rx_csa;
1151         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl_rx_pm_sleep_notif;
1152         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1153             iwl_rx_pm_debug_statistics_notif;
1154         priv->rx_handlers[BEACON_NOTIFICATION] = iwl_rx_beacon_notif;
1155
1156         /*
1157          * The same handler is used for both the REPLY to a discrete
1158          * statistics request from the host as well as for the periodic
1159          * statistics notifications (after received beacons) from the uCode.
1160          */
1161         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1162         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1163
1164         iwl_setup_spectrum_handlers(priv);
1165         iwl_setup_rx_scan_handlers(priv);
1166
1167         /* status change handler */
1168         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl_rx_card_state_notif;
1169
1170         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1171             iwl_rx_missed_beacon_notif;
1172         /* Rx handlers */
1173         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1174         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1175         /* block ack */
1176         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1177         /* Set up hardware specific Rx handlers */
1178         priv->cfg->ops->lib->rx_handler_setup(priv);
1179 }
1180
1181 /*
1182  * this should be called while priv->lock is locked
1183 */
1184 static void __iwl_rx_replenish(struct iwl_priv *priv)
1185 {
1186         iwl_rx_allocate(priv);
1187         iwl_rx_queue_restock(priv);
1188 }
1189
1190
1191 /**
1192  * iwl_rx_handle - Main entry function for receiving responses from uCode
1193  *
1194  * Uses the priv->rx_handlers callback function array to invoke
1195  * the appropriate handlers, including command responses,
1196  * frame-received notifications, and other notifications.
1197  */
1198 void iwl_rx_handle(struct iwl_priv *priv)
1199 {
1200         struct iwl_rx_mem_buffer *rxb;
1201         struct iwl_rx_packet *pkt;
1202         struct iwl_rx_queue *rxq = &priv->rxq;
1203         u32 r, i;
1204         int reclaim;
1205         unsigned long flags;
1206         u8 fill_rx = 0;
1207         u32 count = 8;
1208
1209         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1210          * buffer that the driver may process (last buffer filled by ucode). */
1211         r = le16_to_cpu(rxq->rb_stts->closed_rb_num) &  0x0FFF;
1212         i = rxq->read;
1213
1214         /* Rx interrupt, but nothing sent from uCode */
1215         if (i == r)
1216                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1217
1218         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1219                 fill_rx = 1;
1220
1221         while (i != r) {
1222                 rxb = rxq->queue[i];
1223
1224                 /* If an RXB doesn't have a Rx queue slot associated with it,
1225                  * then a bug has been introduced in the queue refilling
1226                  * routines -- catch it here */
1227                 BUG_ON(rxb == NULL);
1228
1229                 rxq->queue[i] = NULL;
1230
1231                 dma_sync_single_range_for_cpu(
1232                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1233                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1234                                 priv->hw_params.rx_buf_size,
1235                                 PCI_DMA_FROMDEVICE);
1236                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1237
1238                 /* Reclaim a command buffer only if this packet is a response
1239                  *   to a (driver-originated) command.
1240                  * If the packet (e.g. Rx frame) originated from uCode,
1241                  *   there is no command buffer to reclaim.
1242                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1243                  *   but apparently a few don't get set; catch them here. */
1244                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1245                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1246                         (pkt->hdr.cmd != REPLY_RX) &&
1247                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1248                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1249                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1250                         (pkt->hdr.cmd != REPLY_TX);
1251
1252                 /* Based on type of command response or notification,
1253                  *   handle those that need handling via function in
1254                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1255                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1256                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1257                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1258                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1259                 } else {
1260                         /* No handling needed */
1261                         IWL_DEBUG(IWL_DL_RX,
1262                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1263                                 r, i, get_cmd_string(pkt->hdr.cmd),
1264                                 pkt->hdr.cmd);
1265                 }
1266
1267                 if (reclaim) {
1268                         /* Invoke any callbacks, transfer the skb to caller, and
1269                          * fire off the (possibly) blocking iwl_send_cmd()
1270                          * as we reclaim the driver command queue */
1271                         if (rxb && rxb->skb)
1272                                 iwl_tx_cmd_complete(priv, rxb);
1273                         else
1274                                 IWL_WARNING("Claim null rxb?\n");
1275                 }
1276
1277                 /* For now we just don't re-use anything.  We can tweak this
1278                  * later to try and re-use notification packets and SKBs that
1279                  * fail to Rx correctly */
1280                 if (rxb->skb != NULL) {
1281                         priv->alloc_rxb_skb--;
1282                         dev_kfree_skb_any(rxb->skb);
1283                         rxb->skb = NULL;
1284                 }
1285
1286                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1287                                  priv->hw_params.rx_buf_size + 256,
1288                                  PCI_DMA_FROMDEVICE);
1289                 spin_lock_irqsave(&rxq->lock, flags);
1290                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1291                 spin_unlock_irqrestore(&rxq->lock, flags);
1292                 i = (i + 1) & RX_QUEUE_MASK;
1293                 /* If there are a lot of unused frames,
1294                  * restock the Rx queue so ucode wont assert. */
1295                 if (fill_rx) {
1296                         count++;
1297                         if (count >= 8) {
1298                                 priv->rxq.read = i;
1299                                 __iwl_rx_replenish(priv);
1300                                 count = 0;
1301                         }
1302                 }
1303         }
1304
1305         /* Backtrack one entry */
1306         priv->rxq.read = i;
1307         iwl_rx_queue_restock(priv);
1308 }
1309
1310 #ifdef CONFIG_IWLWIFI_DEBUG
1311 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1312 {
1313         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1314
1315         IWL_DEBUG_RADIO("RX CONFIG:\n");
1316         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1317         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1318         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1319         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1320                         le32_to_cpu(rxon->filter_flags));
1321         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1322         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1323                         rxon->ofdm_basic_rates);
1324         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1325         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1326         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1327         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1328 }
1329 #endif
1330
1331 static void iwl_enable_interrupts(struct iwl_priv *priv)
1332 {
1333         IWL_DEBUG_ISR("Enabling interrupts\n");
1334         set_bit(STATUS_INT_ENABLED, &priv->status);
1335         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1336 }
1337
1338 /* call this function to flush any scheduled tasklet */
1339 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1340 {
1341         /* wait to make sure we flush pending tasklet*/
1342         synchronize_irq(priv->pci_dev->irq);
1343         tasklet_kill(&priv->irq_tasklet);
1344 }
1345
1346 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1347 {
1348         clear_bit(STATUS_INT_ENABLED, &priv->status);
1349
1350         /* disable interrupts from uCode/NIC to host */
1351         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1352
1353         /* acknowledge/clear/reset any interrupts still pending
1354          * from uCode or flow handler (Rx/Tx DMA) */
1355         iwl_write32(priv, CSR_INT, 0xffffffff);
1356         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1357         IWL_DEBUG_ISR("Disabled interrupts\n");
1358 }
1359
1360
1361 /**
1362  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1363  */
1364 static void iwl_irq_handle_error(struct iwl_priv *priv)
1365 {
1366         /* Set the FW error flag -- cleared on iwl_down */
1367         set_bit(STATUS_FW_ERROR, &priv->status);
1368
1369         /* Cancel currently queued command. */
1370         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1371
1372 #ifdef CONFIG_IWLWIFI_DEBUG
1373         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1374                 iwl_dump_nic_error_log(priv);
1375                 iwl_dump_nic_event_log(priv);
1376                 iwl_print_rx_config_cmd(priv);
1377         }
1378 #endif
1379
1380         wake_up_interruptible(&priv->wait_command_queue);
1381
1382         /* Keep the restart process from trying to send host
1383          * commands by clearing the INIT status bit */
1384         clear_bit(STATUS_READY, &priv->status);
1385
1386         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1387                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1388                           "Restarting adapter due to uCode error.\n");
1389
1390                 if (iwl_is_associated(priv)) {
1391                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1392                                sizeof(priv->recovery_rxon));
1393                         priv->error_recovering = 1;
1394                 }
1395                 if (priv->cfg->mod_params->restart_fw)
1396                         queue_work(priv->workqueue, &priv->restart);
1397         }
1398 }
1399
1400 static void iwl_error_recovery(struct iwl_priv *priv)
1401 {
1402         unsigned long flags;
1403
1404         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1405                sizeof(priv->staging_rxon));
1406         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1407         iwl_commit_rxon(priv);
1408
1409         iwl_rxon_add_station(priv, priv->bssid, 1);
1410
1411         spin_lock_irqsave(&priv->lock, flags);
1412         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1413         priv->error_recovering = 0;
1414         spin_unlock_irqrestore(&priv->lock, flags);
1415 }
1416
1417 static void iwl_irq_tasklet(struct iwl_priv *priv)
1418 {
1419         u32 inta, handled = 0;
1420         u32 inta_fh;
1421         unsigned long flags;
1422 #ifdef CONFIG_IWLWIFI_DEBUG
1423         u32 inta_mask;
1424 #endif
1425
1426         spin_lock_irqsave(&priv->lock, flags);
1427
1428         /* Ack/clear/reset pending uCode interrupts.
1429          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1430          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1431         inta = iwl_read32(priv, CSR_INT);
1432         iwl_write32(priv, CSR_INT, inta);
1433
1434         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1435          * Any new interrupts that happen after this, either while we're
1436          * in this tasklet, or later, will show up in next ISR/tasklet. */
1437         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1438         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1439
1440 #ifdef CONFIG_IWLWIFI_DEBUG
1441         if (priv->debug_level & IWL_DL_ISR) {
1442                 /* just for debug */
1443                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1444                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1445                               inta, inta_mask, inta_fh);
1446         }
1447 #endif
1448
1449         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1450          * atomic, make sure that inta covers all the interrupts that
1451          * we've discovered, even if FH interrupt came in just after
1452          * reading CSR_INT. */
1453         if (inta_fh & CSR49_FH_INT_RX_MASK)
1454                 inta |= CSR_INT_BIT_FH_RX;
1455         if (inta_fh & CSR49_FH_INT_TX_MASK)
1456                 inta |= CSR_INT_BIT_FH_TX;
1457
1458         /* Now service all interrupt bits discovered above. */
1459         if (inta & CSR_INT_BIT_HW_ERR) {
1460                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1461
1462                 /* Tell the device to stop sending interrupts */
1463                 iwl_disable_interrupts(priv);
1464
1465                 iwl_irq_handle_error(priv);
1466
1467                 handled |= CSR_INT_BIT_HW_ERR;
1468
1469                 spin_unlock_irqrestore(&priv->lock, flags);
1470
1471                 return;
1472         }
1473
1474 #ifdef CONFIG_IWLWIFI_DEBUG
1475         if (priv->debug_level & (IWL_DL_ISR)) {
1476                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1477                 if (inta & CSR_INT_BIT_SCD)
1478                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1479                                       "the frame/frames.\n");
1480
1481                 /* Alive notification via Rx interrupt will do the real work */
1482                 if (inta & CSR_INT_BIT_ALIVE)
1483                         IWL_DEBUG_ISR("Alive interrupt\n");
1484         }
1485 #endif
1486         /* Safely ignore these bits for debug checks below */
1487         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1488
1489         /* HW RF KILL switch toggled */
1490         if (inta & CSR_INT_BIT_RF_KILL) {
1491                 int hw_rf_kill = 0;
1492                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1493                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1494                         hw_rf_kill = 1;
1495
1496                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1497                                 hw_rf_kill ? "disable radio" : "enable radio");
1498
1499                 /* driver only loads ucode once setting the interface up.
1500                  * the driver as well won't allow loading if RFKILL is set
1501                  * therefore no need to restart the driver from this handler
1502                  */
1503                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1504                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1505
1506                 handled |= CSR_INT_BIT_RF_KILL;
1507         }
1508
1509         /* Chip got too hot and stopped itself */
1510         if (inta & CSR_INT_BIT_CT_KILL) {
1511                 IWL_ERROR("Microcode CT kill error detected.\n");
1512                 handled |= CSR_INT_BIT_CT_KILL;
1513         }
1514
1515         /* Error detected by uCode */
1516         if (inta & CSR_INT_BIT_SW_ERR) {
1517                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1518                           inta);
1519                 iwl_irq_handle_error(priv);
1520                 handled |= CSR_INT_BIT_SW_ERR;
1521         }
1522
1523         /* uCode wakes up after power-down sleep */
1524         if (inta & CSR_INT_BIT_WAKEUP) {
1525                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1526                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1527                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1528                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1529                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1530                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1531                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1532                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1533
1534                 handled |= CSR_INT_BIT_WAKEUP;
1535         }
1536
1537         /* All uCode command responses, including Tx command responses,
1538          * Rx "responses" (frame-received notification), and other
1539          * notifications from uCode come through here*/
1540         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1541                 iwl_rx_handle(priv);
1542                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1543         }
1544
1545         if (inta & CSR_INT_BIT_FH_TX) {
1546                 IWL_DEBUG_ISR("Tx interrupt\n");
1547                 handled |= CSR_INT_BIT_FH_TX;
1548                 /* FH finished to write, send event */
1549                 priv->ucode_write_complete = 1;
1550                 wake_up_interruptible(&priv->wait_command_queue);
1551         }
1552
1553         if (inta & ~handled)
1554                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1555
1556         if (inta & ~CSR_INI_SET_MASK) {
1557                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1558                          inta & ~CSR_INI_SET_MASK);
1559                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1560         }
1561
1562         /* Re-enable all interrupts */
1563         /* only Re-enable if diabled by irq */
1564         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1565                 iwl_enable_interrupts(priv);
1566
1567 #ifdef CONFIG_IWLWIFI_DEBUG
1568         if (priv->debug_level & (IWL_DL_ISR)) {
1569                 inta = iwl_read32(priv, CSR_INT);
1570                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1571                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1572                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1573                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1574         }
1575 #endif
1576         spin_unlock_irqrestore(&priv->lock, flags);
1577 }
1578
1579 static irqreturn_t iwl_isr(int irq, void *data)
1580 {
1581         struct iwl_priv *priv = data;
1582         u32 inta, inta_mask;
1583         u32 inta_fh;
1584         if (!priv)
1585                 return IRQ_NONE;
1586
1587         spin_lock(&priv->lock);
1588
1589         /* Disable (but don't clear!) interrupts here to avoid
1590          *    back-to-back ISRs and sporadic interrupts from our NIC.
1591          * If we have something to service, the tasklet will re-enable ints.
1592          * If we *don't* have something, we'll re-enable before leaving here. */
1593         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1594         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1595
1596         /* Discover which interrupts are active/pending */
1597         inta = iwl_read32(priv, CSR_INT);
1598         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1599
1600         /* Ignore interrupt if there's nothing in NIC to service.
1601          * This may be due to IRQ shared with another device,
1602          * or due to sporadic interrupts thrown from our NIC. */
1603         if (!inta && !inta_fh) {
1604                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1605                 goto none;
1606         }
1607
1608         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1609                 /* Hardware disappeared. It might have already raised
1610                  * an interrupt */
1611                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1612                 goto unplugged;
1613         }
1614
1615         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1616                       inta, inta_mask, inta_fh);
1617
1618         inta &= ~CSR_INT_BIT_SCD;
1619
1620         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1621         if (likely(inta || inta_fh))
1622                 tasklet_schedule(&priv->irq_tasklet);
1623
1624  unplugged:
1625         spin_unlock(&priv->lock);
1626         return IRQ_HANDLED;
1627
1628  none:
1629         /* re-enable interrupts here since we don't have anything to service. */
1630         /* only Re-enable if diabled by irq */
1631         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1632                 iwl_enable_interrupts(priv);
1633         spin_unlock(&priv->lock);
1634         return IRQ_NONE;
1635 }
1636
1637 /******************************************************************************
1638  *
1639  * uCode download functions
1640  *
1641  ******************************************************************************/
1642
1643 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1644 {
1645         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1646         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1647         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1648         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1649         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1650         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1651 }
1652
1653 static void iwl_nic_start(struct iwl_priv *priv)
1654 {
1655         /* Remove all resets to allow NIC to operate */
1656         iwl_write32(priv, CSR_RESET, 0);
1657 }
1658
1659
1660 /**
1661  * iwl_read_ucode - Read uCode images from disk file.
1662  *
1663  * Copy into buffers for card to fetch via bus-mastering
1664  */
1665 static int iwl_read_ucode(struct iwl_priv *priv)
1666 {
1667         struct iwl_ucode *ucode;
1668         int ret;
1669         const struct firmware *ucode_raw;
1670         const char *name = priv->cfg->fw_name;
1671         u8 *src;
1672         size_t len;
1673         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1674
1675         /* Ask kernel firmware_class module to get the boot firmware off disk.
1676          * request_firmware() is synchronous, file is in memory on return. */
1677         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1678         if (ret < 0) {
1679                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1680                                         name, ret);
1681                 goto error;
1682         }
1683
1684         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1685                        name, ucode_raw->size);
1686
1687         /* Make sure that we got at least our header! */
1688         if (ucode_raw->size < sizeof(*ucode)) {
1689                 IWL_ERROR("File size way too small!\n");
1690                 ret = -EINVAL;
1691                 goto err_release;
1692         }
1693
1694         /* Data from ucode file:  header followed by uCode images */
1695         ucode = (void *)ucode_raw->data;
1696
1697         ver = le32_to_cpu(ucode->ver);
1698         inst_size = le32_to_cpu(ucode->inst_size);
1699         data_size = le32_to_cpu(ucode->data_size);
1700         init_size = le32_to_cpu(ucode->init_size);
1701         init_data_size = le32_to_cpu(ucode->init_data_size);
1702         boot_size = le32_to_cpu(ucode->boot_size);
1703
1704         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1705         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1706                        inst_size);
1707         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1708                        data_size);
1709         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1710                        init_size);
1711         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1712                        init_data_size);
1713         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1714                        boot_size);
1715
1716         /* Verify size of file vs. image size info in file's header */
1717         if (ucode_raw->size < sizeof(*ucode) +
1718                 inst_size + data_size + init_size +
1719                 init_data_size + boot_size) {
1720
1721                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1722                                (int)ucode_raw->size);
1723                 ret = -EINVAL;
1724                 goto err_release;
1725         }
1726
1727         /* Verify that uCode images will fit in card's SRAM */
1728         if (inst_size > priv->hw_params.max_inst_size) {
1729                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1730                                inst_size);
1731                 ret = -EINVAL;
1732                 goto err_release;
1733         }
1734
1735         if (data_size > priv->hw_params.max_data_size) {
1736                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1737                                 data_size);
1738                 ret = -EINVAL;
1739                 goto err_release;
1740         }
1741         if (init_size > priv->hw_params.max_inst_size) {
1742                 IWL_DEBUG_INFO
1743                     ("uCode init instr len %d too large to fit in\n",
1744                       init_size);
1745                 ret = -EINVAL;
1746                 goto err_release;
1747         }
1748         if (init_data_size > priv->hw_params.max_data_size) {
1749                 IWL_DEBUG_INFO
1750                     ("uCode init data len %d too large to fit in\n",
1751                       init_data_size);
1752                 ret = -EINVAL;
1753                 goto err_release;
1754         }
1755         if (boot_size > priv->hw_params.max_bsm_size) {
1756                 IWL_DEBUG_INFO
1757                     ("uCode boot instr len %d too large to fit in\n",
1758                       boot_size);
1759                 ret = -EINVAL;
1760                 goto err_release;
1761         }
1762
1763         /* Allocate ucode buffers for card's bus-master loading ... */
1764
1765         /* Runtime instructions and 2 copies of data:
1766          * 1) unmodified from disk
1767          * 2) backup cache for save/restore during power-downs */
1768         priv->ucode_code.len = inst_size;
1769         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1770
1771         priv->ucode_data.len = data_size;
1772         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1773
1774         priv->ucode_data_backup.len = data_size;
1775         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1776
1777         /* Initialization instructions and data */
1778         if (init_size && init_data_size) {
1779                 priv->ucode_init.len = init_size;
1780                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1781
1782                 priv->ucode_init_data.len = init_data_size;
1783                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1784
1785                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1786                         goto err_pci_alloc;
1787         }
1788
1789         /* Bootstrap (instructions only, no data) */
1790         if (boot_size) {
1791                 priv->ucode_boot.len = boot_size;
1792                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1793
1794                 if (!priv->ucode_boot.v_addr)
1795                         goto err_pci_alloc;
1796         }
1797
1798         /* Copy images into buffers for card's bus-master reads ... */
1799
1800         /* Runtime instructions (first block of data in file) */
1801         src = &ucode->data[0];
1802         len = priv->ucode_code.len;
1803         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1804         memcpy(priv->ucode_code.v_addr, src, len);
1805         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1806                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1807
1808         /* Runtime data (2nd block)
1809          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1810         src = &ucode->data[inst_size];
1811         len = priv->ucode_data.len;
1812         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1813         memcpy(priv->ucode_data.v_addr, src, len);
1814         memcpy(priv->ucode_data_backup.v_addr, src, len);
1815
1816         /* Initialization instructions (3rd block) */
1817         if (init_size) {
1818                 src = &ucode->data[inst_size + data_size];
1819                 len = priv->ucode_init.len;
1820                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1821                                 len);
1822                 memcpy(priv->ucode_init.v_addr, src, len);
1823         }
1824
1825         /* Initialization data (4th block) */
1826         if (init_data_size) {
1827                 src = &ucode->data[inst_size + data_size + init_size];
1828                 len = priv->ucode_init_data.len;
1829                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1830                                len);
1831                 memcpy(priv->ucode_init_data.v_addr, src, len);
1832         }
1833
1834         /* Bootstrap instructions (5th block) */
1835         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1836         len = priv->ucode_boot.len;
1837         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1838         memcpy(priv->ucode_boot.v_addr, src, len);
1839
1840         /* We have our copies now, allow OS release its copies */
1841         release_firmware(ucode_raw);
1842         return 0;
1843
1844  err_pci_alloc:
1845         IWL_ERROR("failed to allocate pci memory\n");
1846         ret = -ENOMEM;
1847         iwl_dealloc_ucode_pci(priv);
1848
1849  err_release:
1850         release_firmware(ucode_raw);
1851
1852  error:
1853         return ret;
1854 }
1855
1856 /* temporary */
1857 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1858                                  struct sk_buff *skb);
1859
1860 /**
1861  * iwl_alive_start - called after REPLY_ALIVE notification received
1862  *                   from protocol/runtime uCode (initialization uCode's
1863  *                   Alive gets handled by iwl_init_alive_start()).
1864  */
1865 static void iwl_alive_start(struct iwl_priv *priv)
1866 {
1867         int ret = 0;
1868
1869         IWL_DEBUG_INFO("Runtime Alive received.\n");
1870
1871         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1872                 /* We had an error bringing up the hardware, so take it
1873                  * all the way back down so we can try again */
1874                 IWL_DEBUG_INFO("Alive failed.\n");
1875                 goto restart;
1876         }
1877
1878         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1879          * This is a paranoid check, because we would not have gotten the
1880          * "runtime" alive if code weren't properly loaded.  */
1881         if (iwl_verify_ucode(priv)) {
1882                 /* Runtime instruction load was bad;
1883                  * take it all the way back down so we can try again */
1884                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1885                 goto restart;
1886         }
1887
1888         iwl_clear_stations_table(priv);
1889         ret = priv->cfg->ops->lib->alive_notify(priv);
1890         if (ret) {
1891                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1892                             ret);
1893                 goto restart;
1894         }
1895
1896         /* After the ALIVE response, we can send host commands to the uCode */
1897         set_bit(STATUS_ALIVE, &priv->status);
1898
1899         if (iwl_is_rfkill(priv))
1900                 return;
1901
1902         ieee80211_wake_queues(priv->hw);
1903
1904         priv->active_rate = priv->rates_mask;
1905         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1906
1907         if (iwl_is_associated(priv)) {
1908                 struct iwl_rxon_cmd *active_rxon =
1909                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1910
1911                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1912                        sizeof(priv->staging_rxon));
1913                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1914         } else {
1915                 /* Initialize our rx_config data */
1916                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1917                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1918         }
1919
1920         /* Configure Bluetooth device coexistence support */
1921         iwl_send_bt_config(priv);
1922
1923         iwl_reset_run_time_calib(priv);
1924
1925         /* Configure the adapter for unassociated operation */
1926         iwl_commit_rxon(priv);
1927
1928         /* At this point, the NIC is initialized and operational */
1929         iwl_rf_kill_ct_config(priv);
1930
1931         iwl_leds_register(priv);
1932
1933         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1934         set_bit(STATUS_READY, &priv->status);
1935         wake_up_interruptible(&priv->wait_command_queue);
1936
1937         if (priv->error_recovering)
1938                 iwl_error_recovery(priv);
1939
1940         iwl_power_update_mode(priv, 1);
1941
1942         /* reassociate for ADHOC mode */
1943         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1944                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1945                                                                 priv->vif);
1946                 if (beacon)
1947                         iwl_mac_beacon_update(priv->hw, beacon);
1948         }
1949
1950
1951         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1952                 iwl_set_mode(priv, priv->iw_mode);
1953
1954         return;
1955
1956  restart:
1957         queue_work(priv->workqueue, &priv->restart);
1958 }
1959
1960 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1961
1962 static void __iwl_down(struct iwl_priv *priv)
1963 {
1964         unsigned long flags;
1965         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1966
1967         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1968
1969         if (!exit_pending)
1970                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1971
1972         iwl_leds_unregister(priv);
1973
1974         iwl_clear_stations_table(priv);
1975
1976         /* Unblock any waiting calls */
1977         wake_up_interruptible_all(&priv->wait_command_queue);
1978
1979         /* Wipe out the EXIT_PENDING status bit if we are not actually
1980          * exiting the module */
1981         if (!exit_pending)
1982                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1983
1984         /* stop and reset the on-board processor */
1985         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1986
1987         /* tell the device to stop sending interrupts */
1988         spin_lock_irqsave(&priv->lock, flags);
1989         iwl_disable_interrupts(priv);
1990         spin_unlock_irqrestore(&priv->lock, flags);
1991         iwl_synchronize_irq(priv);
1992
1993         if (priv->mac80211_registered)
1994                 ieee80211_stop_queues(priv->hw);
1995
1996         /* If we have not previously called iwl_init() then
1997          * clear all bits but the RF Kill and SUSPEND bits and return */
1998         if (!iwl_is_init(priv)) {
1999                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2000                                         STATUS_RF_KILL_HW |
2001                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2002                                         STATUS_RF_KILL_SW |
2003                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2004                                         STATUS_GEO_CONFIGURED |
2005                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2006                                         STATUS_IN_SUSPEND |
2007                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2008                                         STATUS_EXIT_PENDING;
2009                 goto exit;
2010         }
2011
2012         /* ...otherwise clear out all the status bits but the RF Kill and
2013          * SUSPEND bits and continue taking the NIC down. */
2014         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2015                                 STATUS_RF_KILL_HW |
2016                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2017                                 STATUS_RF_KILL_SW |
2018                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2019                                 STATUS_GEO_CONFIGURED |
2020                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2021                                 STATUS_IN_SUSPEND |
2022                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2023                                 STATUS_FW_ERROR |
2024                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2025                                 STATUS_EXIT_PENDING;
2026
2027         spin_lock_irqsave(&priv->lock, flags);
2028         iwl_clear_bit(priv, CSR_GP_CNTRL,
2029                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2030         spin_unlock_irqrestore(&priv->lock, flags);
2031
2032         iwl_txq_ctx_stop(priv);
2033         iwl_rxq_stop(priv);
2034
2035         spin_lock_irqsave(&priv->lock, flags);
2036         if (!iwl_grab_nic_access(priv)) {
2037                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2038                                          APMG_CLK_VAL_DMA_CLK_RQT);
2039                 iwl_release_nic_access(priv);
2040         }
2041         spin_unlock_irqrestore(&priv->lock, flags);
2042
2043         udelay(5);
2044
2045         /* FIXME: apm_ops.suspend(priv) */
2046         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2047                 priv->cfg->ops->lib->apm_ops.stop(priv);
2048         else
2049                 priv->cfg->ops->lib->apm_ops.reset(priv);
2050  exit:
2051         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2052
2053         if (priv->ibss_beacon)
2054                 dev_kfree_skb(priv->ibss_beacon);
2055         priv->ibss_beacon = NULL;
2056
2057         /* clear out any free frames */
2058         iwl_clear_free_frames(priv);
2059 }
2060
2061 static void iwl_down(struct iwl_priv *priv)
2062 {
2063         mutex_lock(&priv->mutex);
2064         __iwl_down(priv);
2065         mutex_unlock(&priv->mutex);
2066
2067         iwl_cancel_deferred_work(priv);
2068 }
2069
2070 #define MAX_HW_RESTARTS 5
2071
2072 static int __iwl_up(struct iwl_priv *priv)
2073 {
2074         int i;
2075         int ret;
2076
2077         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2078                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2079                 return -EIO;
2080         }
2081
2082         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2083                 IWL_ERROR("ucode not available for device bringup\n");
2084                 return -EIO;
2085         }
2086
2087         /* If platform's RF_KILL switch is NOT set to KILL */
2088         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2089                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2090         else
2091                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2092
2093         if (iwl_is_rfkill(priv)) {
2094                 iwl_enable_interrupts(priv);
2095                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2096                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2097                 return 0;
2098         }
2099
2100         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2101
2102         ret = iwl_hw_nic_init(priv);
2103         if (ret) {
2104                 IWL_ERROR("Unable to init nic\n");
2105                 return ret;
2106         }
2107
2108         /* make sure rfkill handshake bits are cleared */
2109         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2110         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2111                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2112
2113         /* clear (again), then enable host interrupts */
2114         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2115         iwl_enable_interrupts(priv);
2116
2117         /* really make sure rfkill handshake bits are cleared */
2118         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2119         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2120
2121         /* Copy original ucode data image from disk into backup cache.
2122          * This will be used to initialize the on-board processor's
2123          * data SRAM for a clean start when the runtime program first loads. */
2124         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2125                priv->ucode_data.len);
2126
2127         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2128
2129                 iwl_clear_stations_table(priv);
2130
2131                 /* load bootstrap state machine,
2132                  * load bootstrap program into processor's memory,
2133                  * prepare to load the "initialize" uCode */
2134                 ret = priv->cfg->ops->lib->load_ucode(priv);
2135
2136                 if (ret) {
2137                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2138                         continue;
2139                 }
2140
2141                 /* Clear out the uCode error bit if it is set */
2142                 clear_bit(STATUS_FW_ERROR, &priv->status);
2143
2144                 /* start card; "initialize" will load runtime ucode */
2145                 iwl_nic_start(priv);
2146
2147                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2148
2149                 return 0;
2150         }
2151
2152         set_bit(STATUS_EXIT_PENDING, &priv->status);
2153         __iwl_down(priv);
2154         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2155
2156         /* tried to restart and config the device for as long as our
2157          * patience could withstand */
2158         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2159         return -EIO;
2160 }
2161
2162
2163 /*****************************************************************************
2164  *
2165  * Workqueue callbacks
2166  *
2167  *****************************************************************************/
2168
2169 static void iwl_bg_init_alive_start(struct work_struct *data)
2170 {
2171         struct iwl_priv *priv =
2172             container_of(data, struct iwl_priv, init_alive_start.work);
2173
2174         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2175                 return;
2176
2177         mutex_lock(&priv->mutex);
2178         priv->cfg->ops->lib->init_alive_start(priv);
2179         mutex_unlock(&priv->mutex);
2180 }
2181
2182 static void iwl_bg_alive_start(struct work_struct *data)
2183 {
2184         struct iwl_priv *priv =
2185             container_of(data, struct iwl_priv, alive_start.work);
2186
2187         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2188                 return;
2189
2190         mutex_lock(&priv->mutex);
2191         iwl_alive_start(priv);
2192         mutex_unlock(&priv->mutex);
2193 }
2194
2195 static void iwl_bg_rf_kill(struct work_struct *work)
2196 {
2197         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2198
2199         wake_up_interruptible(&priv->wait_command_queue);
2200
2201         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2202                 return;
2203
2204         mutex_lock(&priv->mutex);
2205
2206         if (!iwl_is_rfkill(priv)) {
2207                 IWL_DEBUG(IWL_DL_RF_KILL,
2208                           "HW and/or SW RF Kill no longer active, restarting "
2209                           "device\n");
2210                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2211                         queue_work(priv->workqueue, &priv->restart);
2212         } else {
2213                 /* make sure mac80211 stop sending Tx frame */
2214                 if (priv->mac80211_registered)
2215                         ieee80211_stop_queues(priv->hw);
2216
2217                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2218                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2219                                           "disabled by SW switch\n");
2220                 else
2221                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2222                                     "Kill switch must be turned off for "
2223                                     "wireless networking to work.\n");
2224         }
2225         mutex_unlock(&priv->mutex);
2226         iwl_rfkill_set_hw_state(priv);
2227 }
2228
2229 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2230 {
2231         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2232                         run_time_calib_work);
2233
2234         mutex_lock(&priv->mutex);
2235
2236         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2237             test_bit(STATUS_SCANNING, &priv->status)) {
2238                 mutex_unlock(&priv->mutex);
2239                 return;
2240         }
2241
2242         if (priv->start_calib) {
2243                 iwl_chain_noise_calibration(priv, &priv->statistics);
2244
2245                 iwl_sensitivity_calibration(priv, &priv->statistics);
2246         }
2247
2248         mutex_unlock(&priv->mutex);
2249         return;
2250 }
2251
2252 static void iwl_bg_up(struct work_struct *data)
2253 {
2254         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2255
2256         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2257                 return;
2258
2259         mutex_lock(&priv->mutex);
2260         __iwl_up(priv);
2261         mutex_unlock(&priv->mutex);
2262         iwl_rfkill_set_hw_state(priv);
2263 }
2264
2265 static void iwl_bg_restart(struct work_struct *data)
2266 {
2267         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2268
2269         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2270                 return;
2271
2272         iwl_down(priv);
2273         queue_work(priv->workqueue, &priv->up);
2274 }
2275
2276 static void iwl_bg_rx_replenish(struct work_struct *data)
2277 {
2278         struct iwl_priv *priv =
2279             container_of(data, struct iwl_priv, rx_replenish);
2280
2281         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2282                 return;
2283
2284         mutex_lock(&priv->mutex);
2285         iwl_rx_replenish(priv);
2286         mutex_unlock(&priv->mutex);
2287 }
2288
2289 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2290
2291 static void iwl_post_associate(struct iwl_priv *priv)
2292 {
2293         struct ieee80211_conf *conf = NULL;
2294         int ret = 0;
2295         unsigned long flags;
2296
2297         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2298                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2299                 return;
2300         }
2301
2302         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2303                         priv->assoc_id, priv->active_rxon.bssid_addr);
2304
2305
2306         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2307                 return;
2308
2309
2310         if (!priv->vif || !priv->is_open)
2311                 return;
2312
2313         iwl_power_cancel_timeout(priv);
2314         iwl_scan_cancel_timeout(priv, 200);
2315
2316         conf = ieee80211_get_hw_conf(priv->hw);
2317
2318         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2319         iwl_commit_rxon(priv);
2320
2321         iwl_setup_rxon_timing(priv);
2322         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2323                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2324         if (ret)
2325                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2326                             "Attempting to continue.\n");
2327
2328         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2329
2330         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2331
2332         iwl_set_rxon_chain(priv);
2333         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2334
2335         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2336                         priv->assoc_id, priv->beacon_int);
2337
2338         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2339                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2340         else
2341                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2342
2343         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2344                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2345                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2346                 else
2347                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2348
2349                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2350                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2351
2352         }
2353
2354         iwl_commit_rxon(priv);
2355
2356         switch (priv->iw_mode) {
2357         case NL80211_IFTYPE_STATION:
2358                 break;
2359
2360         case NL80211_IFTYPE_ADHOC:
2361
2362                 /* assume default assoc id */
2363                 priv->assoc_id = 1;
2364
2365                 iwl_rxon_add_station(priv, priv->bssid, 0);
2366                 iwl_send_beacon_cmd(priv);
2367
2368                 break;
2369
2370         default:
2371                 IWL_ERROR("%s Should not be called in %d mode\n",
2372                           __func__, priv->iw_mode);
2373                 break;
2374         }
2375
2376         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2377                 priv->assoc_station_added = 1;
2378
2379         spin_lock_irqsave(&priv->lock, flags);
2380         iwl_activate_qos(priv, 0);
2381         spin_unlock_irqrestore(&priv->lock, flags);
2382
2383         /* the chain noise calibration will enabled PM upon completion
2384          * If chain noise has already been run, then we need to enable
2385          * power management here */
2386         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2387                 iwl_power_enable_management(priv);
2388
2389         /* Enable Rx differential gain and sensitivity calibrations */
2390         iwl_chain_noise_reset(priv);
2391         priv->start_calib = 1;
2392
2393 }
2394
2395 /*****************************************************************************
2396  *
2397  * mac80211 entry point functions
2398  *
2399  *****************************************************************************/
2400
2401 #define UCODE_READY_TIMEOUT     (4 * HZ)
2402
2403 static int iwl_mac_start(struct ieee80211_hw *hw)
2404 {
2405         struct iwl_priv *priv = hw->priv;
2406         int ret;
2407         u16 pci_cmd;
2408
2409         IWL_DEBUG_MAC80211("enter\n");
2410
2411         if (pci_enable_device(priv->pci_dev)) {
2412                 IWL_ERROR("Fail to pci_enable_device\n");
2413                 return -ENODEV;
2414         }
2415         pci_restore_state(priv->pci_dev);
2416         pci_enable_msi(priv->pci_dev);
2417
2418         /* enable interrupts if needed: hw bug w/a */
2419         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2420         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2421                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2422                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2423         }
2424
2425         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2426                           DRV_NAME, priv);
2427         if (ret) {
2428                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2429                 goto out_disable_msi;
2430         }
2431
2432         /* we should be verifying the device is ready to be opened */
2433         mutex_lock(&priv->mutex);
2434
2435         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2436         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2437          * ucode filename and max sizes are card-specific. */
2438
2439         if (!priv->ucode_code.len) {
2440                 ret = iwl_read_ucode(priv);
2441                 if (ret) {
2442                         IWL_ERROR("Could not read microcode: %d\n", ret);
2443                         mutex_unlock(&priv->mutex);
2444                         goto out_release_irq;
2445                 }
2446         }
2447
2448         ret = __iwl_up(priv);
2449
2450         mutex_unlock(&priv->mutex);
2451
2452         iwl_rfkill_set_hw_state(priv);
2453
2454         if (ret)
2455                 goto out_release_irq;
2456
2457         if (iwl_is_rfkill(priv))
2458                 goto out;
2459
2460         IWL_DEBUG_INFO("Start UP work done.\n");
2461
2462         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2463                 return 0;
2464
2465         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2466          * mac80211 will not be run successfully. */
2467         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2468                         test_bit(STATUS_READY, &priv->status),
2469                         UCODE_READY_TIMEOUT);
2470         if (!ret) {
2471                 if (!test_bit(STATUS_READY, &priv->status)) {
2472                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2473                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2474                         ret = -ETIMEDOUT;
2475                         goto out_release_irq;
2476                 }
2477         }
2478
2479 out:
2480         priv->is_open = 1;
2481         IWL_DEBUG_MAC80211("leave\n");
2482         return 0;
2483
2484 out_release_irq:
2485         free_irq(priv->pci_dev->irq, priv);
2486 out_disable_msi:
2487         pci_disable_msi(priv->pci_dev);
2488         pci_disable_device(priv->pci_dev);
2489         priv->is_open = 0;
2490         IWL_DEBUG_MAC80211("leave - failed\n");
2491         return ret;
2492 }
2493
2494 static void iwl_mac_stop(struct ieee80211_hw *hw)
2495 {
2496         struct iwl_priv *priv = hw->priv;
2497
2498         IWL_DEBUG_MAC80211("enter\n");
2499
2500         if (!priv->is_open) {
2501                 IWL_DEBUG_MAC80211("leave - skip\n");
2502                 return;
2503         }
2504
2505         priv->is_open = 0;
2506
2507         if (iwl_is_ready_rf(priv)) {
2508                 /* stop mac, cancel any scan request and clear
2509                  * RXON_FILTER_ASSOC_MSK BIT
2510                  */
2511                 mutex_lock(&priv->mutex);
2512                 iwl_scan_cancel_timeout(priv, 100);
2513                 mutex_unlock(&priv->mutex);
2514         }
2515
2516         iwl_down(priv);
2517
2518         flush_workqueue(priv->workqueue);
2519         free_irq(priv->pci_dev->irq, priv);
2520         pci_disable_msi(priv->pci_dev);
2521         pci_save_state(priv->pci_dev);
2522         pci_disable_device(priv->pci_dev);
2523
2524         IWL_DEBUG_MAC80211("leave\n");
2525 }
2526
2527 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2528 {
2529         struct iwl_priv *priv = hw->priv;
2530
2531         IWL_DEBUG_MACDUMP("enter\n");
2532
2533         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2534                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2535
2536         if (iwl_tx_skb(priv, skb))
2537                 dev_kfree_skb_any(skb);
2538
2539         IWL_DEBUG_MACDUMP("leave\n");
2540         return 0;
2541 }
2542
2543 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2544                                  struct ieee80211_if_init_conf *conf)
2545 {
2546         struct iwl_priv *priv = hw->priv;
2547         unsigned long flags;
2548
2549         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2550
2551         if (priv->vif) {
2552                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2553                 return -EOPNOTSUPP;
2554         }
2555
2556         spin_lock_irqsave(&priv->lock, flags);
2557         priv->vif = conf->vif;
2558         priv->iw_mode = conf->type;
2559
2560         spin_unlock_irqrestore(&priv->lock, flags);
2561
2562         mutex_lock(&priv->mutex);
2563
2564         if (conf->mac_addr) {
2565                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2566                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2567         }
2568
2569         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2570                 /* we are not ready, will run again when ready */
2571                 set_bit(STATUS_MODE_PENDING, &priv->status);
2572
2573         mutex_unlock(&priv->mutex);
2574
2575         IWL_DEBUG_MAC80211("leave\n");
2576         return 0;
2577 }
2578
2579 /**
2580  * iwl_mac_config - mac80211 config callback
2581  *
2582  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2583  * be set inappropriately and the driver currently sets the hardware up to
2584  * use it whenever needed.
2585  */
2586 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2587 {
2588         struct iwl_priv *priv = hw->priv;
2589         const struct iwl_channel_info *ch_info;
2590         struct ieee80211_conf *conf = &hw->conf;
2591         unsigned long flags;
2592         int ret = 0;
2593         u16 channel;
2594
2595         mutex_lock(&priv->mutex);
2596         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2597
2598         priv->current_ht_config.is_ht = conf->ht.enabled;
2599
2600         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2601                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2602                 goto out;
2603         }
2604
2605         if (!conf->radio_enabled)
2606                 iwl_radio_kill_sw_disable_radio(priv);
2607
2608         if (!iwl_is_ready(priv)) {
2609                 IWL_DEBUG_MAC80211("leave - not ready\n");
2610                 ret = -EIO;
2611                 goto out;
2612         }
2613
2614         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2615                      test_bit(STATUS_SCANNING, &priv->status))) {
2616                 IWL_DEBUG_MAC80211("leave - scanning\n");
2617                 mutex_unlock(&priv->mutex);
2618                 return 0;
2619         }
2620
2621         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2622         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2623         if (!is_channel_valid(ch_info)) {
2624                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2625                 ret = -EINVAL;
2626                 goto out;
2627         }
2628
2629         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2630             !is_channel_ibss(ch_info)) {
2631                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2632                         conf->channel->hw_value, conf->channel->band);
2633                 ret = -EINVAL;
2634                 goto out;
2635         }
2636
2637         spin_lock_irqsave(&priv->lock, flags);
2638
2639
2640         /* if we are switching from ht to 2.4 clear flags
2641          * from any ht related info since 2.4 does not
2642          * support ht */
2643         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2644 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2645             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2646 #endif
2647         )
2648                 priv->staging_rxon.flags = 0;
2649
2650         iwl_set_rxon_channel(priv, conf->channel);
2651
2652         iwl_set_flags_for_band(priv, conf->channel->band);
2653
2654         /* The list of supported rates and rate mask can be different
2655          * for each band; since the band may have changed, reset
2656          * the rate mask to what mac80211 lists */
2657         iwl_set_rate(priv);
2658
2659         spin_unlock_irqrestore(&priv->lock, flags);
2660
2661 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2662         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2663                 iwl_hw_channel_switch(priv, conf->channel);
2664                 goto out;
2665         }
2666 #endif
2667
2668         if (!conf->radio_enabled) {
2669                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2670                 goto out;
2671         }
2672
2673         if (iwl_is_rfkill(priv)) {
2674                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2675                 ret = -EIO;
2676                 goto out;
2677         }
2678
2679         if (conf->flags & IEEE80211_CONF_PS)
2680                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2681         else
2682                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2683         if (ret)
2684                 IWL_DEBUG_MAC80211("Error setting power level\n");
2685
2686         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2687                            priv->tx_power_user_lmt, conf->power_level);
2688
2689         iwl_set_tx_power(priv, conf->power_level, false);
2690
2691         iwl_set_rate(priv);
2692
2693         if (memcmp(&priv->active_rxon,
2694                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2695                 iwl_commit_rxon(priv);
2696         else
2697                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2698
2699         IWL_DEBUG_MAC80211("leave\n");
2700
2701 out:
2702         mutex_unlock(&priv->mutex);
2703         return ret;
2704 }
2705
2706 static void iwl_config_ap(struct iwl_priv *priv)
2707 {
2708         int ret = 0;
2709         unsigned long flags;
2710
2711         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2712                 return;
2713
2714         /* The following should be done only at AP bring up */
2715         if (!iwl_is_associated(priv)) {
2716
2717                 /* RXON - unassoc (to set timing command) */
2718                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2719                 iwl_commit_rxon(priv);
2720
2721                 /* RXON Timing */
2722                 iwl_setup_rxon_timing(priv);
2723                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2724                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2725                 if (ret)
2726                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2727                                         "Attempting to continue.\n");
2728
2729                 iwl_set_rxon_chain(priv);
2730
2731                 /* FIXME: what should be the assoc_id for AP? */
2732                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2733                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2734                         priv->staging_rxon.flags |=
2735                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2736                 else
2737                         priv->staging_rxon.flags &=
2738                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2739
2740                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2741                         if (priv->assoc_capability &
2742                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2743                                 priv->staging_rxon.flags |=
2744                                         RXON_FLG_SHORT_SLOT_MSK;
2745                         else
2746                                 priv->staging_rxon.flags &=
2747                                         ~RXON_FLG_SHORT_SLOT_MSK;
2748
2749                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2750                                 priv->staging_rxon.flags &=
2751                                         ~RXON_FLG_SHORT_SLOT_MSK;
2752                 }
2753                 /* restore RXON assoc */
2754                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2755                 iwl_commit_rxon(priv);
2756                 spin_lock_irqsave(&priv->lock, flags);
2757                 iwl_activate_qos(priv, 1);
2758                 spin_unlock_irqrestore(&priv->lock, flags);
2759                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2760         }
2761         iwl_send_beacon_cmd(priv);
2762
2763         /* FIXME - we need to add code here to detect a totally new
2764          * configuration, reset the AP, unassoc, rxon timing, assoc,
2765          * clear sta table, add BCAST sta... */
2766 }
2767
2768
2769 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2770                                         struct ieee80211_vif *vif,
2771                                     struct ieee80211_if_conf *conf)
2772 {
2773         struct iwl_priv *priv = hw->priv;
2774         int rc;
2775
2776         if (conf == NULL)
2777                 return -EIO;
2778
2779         if (priv->vif != vif) {
2780                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2781                 return 0;
2782         }
2783
2784         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2785             conf->changed & IEEE80211_IFCC_BEACON) {
2786                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2787                 if (!beacon)
2788                         return -ENOMEM;
2789                 mutex_lock(&priv->mutex);
2790                 rc = iwl_mac_beacon_update(hw, beacon);
2791                 mutex_unlock(&priv->mutex);
2792                 if (rc)
2793                         return rc;
2794         }
2795
2796         if (!iwl_is_alive(priv))
2797                 return -EAGAIN;
2798
2799         mutex_lock(&priv->mutex);
2800
2801         if (conf->bssid)
2802                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2803
2804 /*
2805  * very dubious code was here; the probe filtering flag is never set:
2806  *
2807         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2808             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2809  */
2810
2811         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2812                 if (!conf->bssid) {
2813                         conf->bssid = priv->mac_addr;
2814                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2815                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2816                                            conf->bssid);
2817                 }
2818                 if (priv->ibss_beacon)
2819                         dev_kfree_skb(priv->ibss_beacon);
2820
2821                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2822         }
2823
2824         if (iwl_is_rfkill(priv))
2825                 goto done;
2826
2827         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2828             !is_multicast_ether_addr(conf->bssid)) {
2829                 /* If there is currently a HW scan going on in the background
2830                  * then we need to cancel it else the RXON below will fail. */
2831                 if (iwl_scan_cancel_timeout(priv, 100)) {
2832                         IWL_WARNING("Aborted scan still in progress "
2833                                     "after 100ms\n");
2834                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2835                         mutex_unlock(&priv->mutex);
2836                         return -EAGAIN;
2837                 }
2838                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2839
2840                 /* TODO: Audit driver for usage of these members and see
2841                  * if mac80211 deprecates them (priv->bssid looks like it
2842                  * shouldn't be there, but I haven't scanned the IBSS code
2843                  * to verify) - jpk */
2844                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2845
2846                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2847                         iwl_config_ap(priv);
2848                 else {
2849                         rc = iwl_commit_rxon(priv);
2850                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2851                                 iwl_rxon_add_station(
2852                                         priv, priv->active_rxon.bssid_addr, 1);
2853                 }
2854
2855         } else {
2856                 iwl_scan_cancel_timeout(priv, 100);
2857                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2858                 iwl_commit_rxon(priv);
2859         }
2860
2861  done:
2862         IWL_DEBUG_MAC80211("leave\n");
2863         mutex_unlock(&priv->mutex);
2864
2865         return 0;
2866 }
2867
2868 static void iwl_configure_filter(struct ieee80211_hw *hw,
2869                                  unsigned int changed_flags,
2870                                  unsigned int *total_flags,
2871                                  int mc_count, struct dev_addr_list *mc_list)
2872 {
2873         struct iwl_priv *priv = hw->priv;
2874         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2875
2876         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2877                         changed_flags, *total_flags);
2878
2879         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2880                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2881                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2882                 else
2883                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2884         }
2885         if (changed_flags & FIF_ALLMULTI) {
2886                 if (*total_flags & FIF_ALLMULTI)
2887                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2888                 else
2889                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2890         }
2891         if (changed_flags & FIF_CONTROL) {
2892                 if (*total_flags & FIF_CONTROL)
2893                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2894                 else
2895                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2896         }
2897         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2898                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2899                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2900                 else
2901                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2902         }
2903
2904         /* We avoid iwl_commit_rxon here to commit the new filter flags
2905          * since mac80211 will call ieee80211_hw_config immediately.
2906          * (mc_list is not supported at this time). Otherwise, we need to
2907          * queue a background iwl_commit_rxon work.
2908          */
2909
2910         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2911                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2912 }
2913
2914 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2915                                      struct ieee80211_if_init_conf *conf)
2916 {
2917         struct iwl_priv *priv = hw->priv;
2918
2919         IWL_DEBUG_MAC80211("enter\n");
2920
2921         mutex_lock(&priv->mutex);
2922
2923         if (iwl_is_ready_rf(priv)) {
2924                 iwl_scan_cancel_timeout(priv, 100);
2925                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2926                 iwl_commit_rxon(priv);
2927         }
2928         if (priv->vif == conf->vif) {
2929                 priv->vif = NULL;
2930                 memset(priv->bssid, 0, ETH_ALEN);
2931         }
2932         mutex_unlock(&priv->mutex);
2933
2934         IWL_DEBUG_MAC80211("leave\n");
2935
2936 }
2937
2938 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2939 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2940                                      struct ieee80211_vif *vif,
2941                                      struct ieee80211_bss_conf *bss_conf,
2942                                      u32 changes)
2943 {
2944         struct iwl_priv *priv = hw->priv;
2945
2946         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2947
2948         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2949                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2950                                    bss_conf->use_short_preamble);
2951                 if (bss_conf->use_short_preamble)
2952                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2953                 else
2954                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2955         }
2956
2957         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2958                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2959                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2960                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2961                 else
2962                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2963         }
2964
2965         if (changes & BSS_CHANGED_HT) {
2966                 iwl_ht_conf(priv, bss_conf);
2967                 iwl_set_rxon_chain(priv);
2968         }
2969
2970         if (changes & BSS_CHANGED_ASSOC) {
2971                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2972                 /* This should never happen as this function should
2973                  * never be called from interrupt context. */
2974                 if (WARN_ON_ONCE(in_interrupt()))
2975                         return;
2976                 if (bss_conf->assoc) {
2977                         priv->assoc_id = bss_conf->aid;
2978                         priv->beacon_int = bss_conf->beacon_int;
2979                         priv->power_data.dtim_period = bss_conf->dtim_period;
2980                         priv->timestamp = bss_conf->timestamp;
2981                         priv->assoc_capability = bss_conf->assoc_capability;
2982
2983                         /* we have just associated, don't start scan too early
2984                          * leave time for EAPOL exchange to complete
2985                          */
2986                         priv->next_scan_jiffies = jiffies +
2987                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2988                         mutex_lock(&priv->mutex);
2989                         iwl_post_associate(priv);
2990                         mutex_unlock(&priv->mutex);
2991                 } else {
2992                         priv->assoc_id = 0;
2993                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2994                 }
2995         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2996                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2997                         iwl_send_rxon_assoc(priv);
2998         }
2999
3000 }
3001
3002 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3003 {
3004         unsigned long flags;
3005         struct iwl_priv *priv = hw->priv;
3006         int ret;
3007
3008         IWL_DEBUG_MAC80211("enter\n");
3009
3010         mutex_lock(&priv->mutex);
3011         spin_lock_irqsave(&priv->lock, flags);
3012
3013         if (!iwl_is_ready_rf(priv)) {
3014                 ret = -EIO;
3015                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3016                 goto out_unlock;
3017         }
3018
3019         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3020                 ret = -EIO;
3021                 IWL_ERROR("ERROR: APs don't scan\n");
3022                 goto out_unlock;
3023         }
3024
3025         /* We don't schedule scan within next_scan_jiffies period.
3026          * Avoid scanning during possible EAPOL exchange, return
3027          * success immediately.
3028          */
3029         if (priv->next_scan_jiffies &&
3030             time_after(priv->next_scan_jiffies, jiffies)) {
3031                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3032                 queue_work(priv->workqueue, &priv->scan_completed);
3033                 ret = 0;
3034                 goto out_unlock;
3035         }
3036
3037         /* if we just finished scan ask for delay */
3038         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3039             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3040                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3041                 queue_work(priv->workqueue, &priv->scan_completed);
3042                 ret = 0;
3043                 goto out_unlock;
3044         }
3045
3046         if (ssid_len) {
3047                 priv->one_direct_scan = 1;
3048                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3049                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3050         } else {
3051                 priv->one_direct_scan = 0;
3052         }
3053
3054         ret = iwl_scan_initiate(priv);
3055
3056         IWL_DEBUG_MAC80211("leave\n");
3057
3058 out_unlock:
3059         spin_unlock_irqrestore(&priv->lock, flags);
3060         mutex_unlock(&priv->mutex);
3061
3062         return ret;
3063 }
3064
3065 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3066                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3067                         u32 iv32, u16 *phase1key)
3068 {
3069
3070         struct iwl_priv *priv = hw->priv;
3071         IWL_DEBUG_MAC80211("enter\n");
3072
3073         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3074
3075         IWL_DEBUG_MAC80211("leave\n");
3076 }
3077
3078 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3079                            const u8 *local_addr, const u8 *addr,
3080                            struct ieee80211_key_conf *key)
3081 {
3082         struct iwl_priv *priv = hw->priv;
3083         int ret = 0;
3084         u8 sta_id = IWL_INVALID_STATION;
3085         u8 is_default_wep_key = 0;
3086
3087         IWL_DEBUG_MAC80211("enter\n");
3088
3089         if (priv->hw_params.sw_crypto) {
3090                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3091                 return -EOPNOTSUPP;
3092         }
3093
3094         if (is_zero_ether_addr(addr))
3095                 /* only support pairwise keys */
3096                 return -EOPNOTSUPP;
3097
3098         sta_id = iwl_find_station(priv, addr);
3099         if (sta_id == IWL_INVALID_STATION) {
3100                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3101                                    addr);
3102                 return -EINVAL;
3103
3104         }
3105
3106         mutex_lock(&priv->mutex);
3107         iwl_scan_cancel_timeout(priv, 100);
3108         mutex_unlock(&priv->mutex);
3109
3110         /* If we are getting WEP group key and we didn't receive any key mapping
3111          * so far, we are in legacy wep mode (group key only), otherwise we are
3112          * in 1X mode.
3113          * In legacy wep mode, we use another host command to the uCode */
3114         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3115                 priv->iw_mode != NL80211_IFTYPE_AP) {
3116                 if (cmd == SET_KEY)
3117                         is_default_wep_key = !priv->key_mapping_key;
3118                 else
3119                         is_default_wep_key =
3120                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3121         }
3122
3123         switch (cmd) {
3124         case SET_KEY:
3125                 if (is_default_wep_key)
3126                         ret = iwl_set_default_wep_key(priv, key);
3127                 else
3128                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3129
3130                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3131                 break;
3132         case DISABLE_KEY:
3133                 if (is_default_wep_key)
3134                         ret = iwl_remove_default_wep_key(priv, key);
3135                 else
3136                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3137
3138                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3139                 break;
3140         default:
3141                 ret = -EINVAL;
3142         }
3143
3144         IWL_DEBUG_MAC80211("leave\n");
3145
3146         return ret;
3147 }
3148
3149 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3150                            const struct ieee80211_tx_queue_params *params)
3151 {
3152         struct iwl_priv *priv = hw->priv;
3153         unsigned long flags;
3154         int q;
3155
3156         IWL_DEBUG_MAC80211("enter\n");
3157
3158         if (!iwl_is_ready_rf(priv)) {
3159                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3160                 return -EIO;
3161         }
3162
3163         if (queue >= AC_NUM) {
3164                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3165                 return 0;
3166         }
3167
3168         if (!priv->qos_data.qos_enable) {
3169                 priv->qos_data.qos_active = 0;
3170                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3171                 return 0;
3172         }
3173         q = AC_NUM - 1 - queue;
3174
3175         spin_lock_irqsave(&priv->lock, flags);
3176
3177         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3178         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3179         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3180         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3181                         cpu_to_le16((params->txop * 32));
3182
3183         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3184         priv->qos_data.qos_active = 1;
3185
3186         if (priv->iw_mode == NL80211_IFTYPE_AP)
3187                 iwl_activate_qos(priv, 1);
3188         else if (priv->assoc_id && iwl_is_associated(priv))
3189                 iwl_activate_qos(priv, 0);
3190
3191         spin_unlock_irqrestore(&priv->lock, flags);
3192
3193         IWL_DEBUG_MAC80211("leave\n");
3194         return 0;
3195 }
3196
3197 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3198                              enum ieee80211_ampdu_mlme_action action,
3199                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3200 {
3201         struct iwl_priv *priv = hw->priv;
3202
3203         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3204                      sta->addr, tid);
3205
3206         if (!(priv->cfg->sku & IWL_SKU_N))
3207                 return -EACCES;
3208
3209         switch (action) {
3210         case IEEE80211_AMPDU_RX_START:
3211                 IWL_DEBUG_HT("start Rx\n");
3212                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3213         case IEEE80211_AMPDU_RX_STOP:
3214                 IWL_DEBUG_HT("stop Rx\n");
3215                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3216         case IEEE80211_AMPDU_TX_START:
3217                 IWL_DEBUG_HT("start Tx\n");
3218                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3219         case IEEE80211_AMPDU_TX_STOP:
3220                 IWL_DEBUG_HT("stop Tx\n");
3221                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3222         default:
3223                 IWL_DEBUG_HT("unknown\n");
3224                 return -EINVAL;
3225                 break;
3226         }
3227         return 0;
3228 }
3229
3230 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3231                                 struct ieee80211_tx_queue_stats *stats)
3232 {
3233         struct iwl_priv *priv = hw->priv;
3234         int i, avail;
3235         struct iwl_tx_queue *txq;
3236         struct iwl_queue *q;
3237         unsigned long flags;
3238
3239         IWL_DEBUG_MAC80211("enter\n");
3240
3241         if (!iwl_is_ready_rf(priv)) {
3242                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3243                 return -EIO;
3244         }
3245
3246         spin_lock_irqsave(&priv->lock, flags);
3247
3248         for (i = 0; i < AC_NUM; i++) {
3249                 txq = &priv->txq[i];
3250                 q = &txq->q;
3251                 avail = iwl_queue_space(q);
3252
3253                 stats[i].len = q->n_window - avail;
3254                 stats[i].limit = q->n_window - q->high_mark;
3255                 stats[i].count = q->n_window;
3256
3257         }
3258         spin_unlock_irqrestore(&priv->lock, flags);
3259
3260         IWL_DEBUG_MAC80211("leave\n");
3261
3262         return 0;
3263 }
3264
3265 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3266                              struct ieee80211_low_level_stats *stats)
3267 {
3268         struct iwl_priv *priv = hw->priv;
3269
3270         priv = hw->priv;
3271         IWL_DEBUG_MAC80211("enter\n");
3272         IWL_DEBUG_MAC80211("leave\n");
3273
3274         return 0;
3275 }
3276
3277 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3278 {
3279         struct iwl_priv *priv = hw->priv;
3280         unsigned long flags;
3281
3282         mutex_lock(&priv->mutex);
3283         IWL_DEBUG_MAC80211("enter\n");
3284
3285         spin_lock_irqsave(&priv->lock, flags);
3286         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3287         spin_unlock_irqrestore(&priv->lock, flags);
3288
3289         iwl_reset_qos(priv);
3290
3291         spin_lock_irqsave(&priv->lock, flags);
3292         priv->assoc_id = 0;
3293         priv->assoc_capability = 0;
3294         priv->assoc_station_added = 0;
3295
3296         /* new association get rid of ibss beacon skb */
3297         if (priv->ibss_beacon)
3298                 dev_kfree_skb(priv->ibss_beacon);
3299
3300         priv->ibss_beacon = NULL;
3301
3302         priv->beacon_int = priv->hw->conf.beacon_int;
3303         priv->timestamp = 0;
3304         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3305                 priv->beacon_int = 0;
3306
3307         spin_unlock_irqrestore(&priv->lock, flags);
3308
3309         if (!iwl_is_ready_rf(priv)) {
3310                 IWL_DEBUG_MAC80211("leave - not ready\n");
3311                 mutex_unlock(&priv->mutex);
3312                 return;
3313         }
3314
3315         /* we are restarting association process
3316          * clear RXON_FILTER_ASSOC_MSK bit
3317          */
3318         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3319                 iwl_scan_cancel_timeout(priv, 100);
3320                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3321                 iwl_commit_rxon(priv);
3322         }
3323
3324         iwl_power_update_mode(priv, 0);
3325
3326         /* Per mac80211.h: This is only used in IBSS mode... */
3327         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3328
3329                 /* switch to CAM during association period.
3330                  * the ucode will block any association/authentication
3331                  * frome during assiciation period if it can not hear
3332                  * the AP because of PM. the timer enable PM back is
3333                  * association do not complete
3334                  */
3335                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3336                                                      IEEE80211_CHAN_RADAR))
3337                                 iwl_power_disable_management(priv, 3000);
3338
3339                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3340                 mutex_unlock(&priv->mutex);
3341                 return;
3342         }
3343
3344         iwl_set_rate(priv);
3345
3346         mutex_unlock(&priv->mutex);
3347
3348         IWL_DEBUG_MAC80211("leave\n");
3349 }
3350
3351 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3352 {
3353         struct iwl_priv *priv = hw->priv;
3354         unsigned long flags;
3355         __le64 timestamp;
3356
3357         IWL_DEBUG_MAC80211("enter\n");
3358
3359         if (!iwl_is_ready_rf(priv)) {
3360                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3361                 return -EIO;
3362         }
3363
3364         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3365                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3366                 return -EIO;
3367         }
3368
3369         spin_lock_irqsave(&priv->lock, flags);
3370
3371         if (priv->ibss_beacon)
3372                 dev_kfree_skb(priv->ibss_beacon);
3373
3374         priv->ibss_beacon = skb;
3375
3376         priv->assoc_id = 0;
3377         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3378         priv->timestamp = le64_to_cpu(timestamp);
3379
3380         IWL_DEBUG_MAC80211("leave\n");
3381         spin_unlock_irqrestore(&priv->lock, flags);
3382
3383         iwl_reset_qos(priv);
3384
3385         iwl_post_associate(priv);
3386
3387
3388         return 0;
3389 }
3390
3391 /*****************************************************************************
3392  *
3393  * sysfs attributes
3394  *
3395  *****************************************************************************/
3396
3397 #ifdef CONFIG_IWLWIFI_DEBUG
3398
3399 /*
3400  * The following adds a new attribute to the sysfs representation
3401  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3402  * used for controlling the debug level.
3403  *
3404  * See the level definitions in iwl for details.
3405  */
3406
3407 static ssize_t show_debug_level(struct device *d,
3408                                 struct device_attribute *attr, char *buf)
3409 {
3410         struct iwl_priv *priv = d->driver_data;
3411
3412         return sprintf(buf, "0x%08X\n", priv->debug_level);
3413 }
3414 static ssize_t store_debug_level(struct device *d,
3415                                 struct device_attribute *attr,
3416                                  const char *buf, size_t count)
3417 {
3418         struct iwl_priv *priv = d->driver_data;
3419         unsigned long val;
3420         int ret;
3421
3422         ret = strict_strtoul(buf, 0, &val);
3423         if (ret)
3424                 printk(KERN_INFO DRV_NAME
3425                        ": %s is not in hex or decimal form.\n", buf);
3426         else
3427                 priv->debug_level = val;
3428
3429         return strnlen(buf, count);
3430 }
3431
3432 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3433                         show_debug_level, store_debug_level);
3434
3435
3436 #endif /* CONFIG_IWLWIFI_DEBUG */
3437
3438
3439 static ssize_t show_version(struct device *d,
3440                                 struct device_attribute *attr, char *buf)
3441 {
3442         struct iwl_priv *priv = d->driver_data;
3443         struct iwl_alive_resp *palive = &priv->card_alive;
3444         ssize_t pos = 0;
3445         u16 eeprom_ver;
3446
3447         if (palive->is_valid)
3448                 pos += sprintf(buf + pos,
3449                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3450                                 "fw type: 0x%01X 0x%01X\n",
3451                                 palive->ucode_major, palive->ucode_minor,
3452                                 palive->sw_rev[0], palive->sw_rev[1],
3453                                 palive->ver_type, palive->ver_subtype);
3454         else
3455                 pos += sprintf(buf + pos, "fw not loaded\n");
3456
3457         if (priv->eeprom) {
3458                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3459                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3460                                  eeprom_ver);
3461         } else {
3462                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3463         }
3464
3465         return pos;
3466 }
3467
3468 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3469
3470 static ssize_t show_temperature(struct device *d,
3471                                 struct device_attribute *attr, char *buf)
3472 {
3473         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3474
3475         if (!iwl_is_alive(priv))
3476                 return -EAGAIN;
3477
3478         return sprintf(buf, "%d\n", priv->temperature);
3479 }
3480
3481 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3482
3483 static ssize_t show_tx_power(struct device *d,
3484                              struct device_attribute *attr, char *buf)
3485 {
3486         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3487         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3488 }
3489
3490 static ssize_t store_tx_power(struct device *d,
3491                               struct device_attribute *attr,
3492                               const char *buf, size_t count)
3493 {
3494         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3495         unsigned long val;
3496         int ret;
3497
3498         ret = strict_strtoul(buf, 10, &val);
3499         if (ret)
3500                 printk(KERN_INFO DRV_NAME
3501                        ": %s is not in decimal form.\n", buf);
3502         else
3503                 iwl_set_tx_power(priv, val, false);
3504
3505         return count;
3506 }
3507
3508 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3509
3510 static ssize_t show_flags(struct device *d,
3511                           struct device_attribute *attr, char *buf)
3512 {
3513         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3514
3515         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3516 }
3517
3518 static ssize_t store_flags(struct device *d,
3519                            struct device_attribute *attr,
3520                            const char *buf, size_t count)
3521 {
3522         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3523         unsigned long val;
3524         u32 flags;
3525         int ret = strict_strtoul(buf, 0, &val);
3526         if (ret)
3527                 return ret;
3528         flags = (u32)val;
3529
3530         mutex_lock(&priv->mutex);
3531         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3532                 /* Cancel any currently running scans... */
3533                 if (iwl_scan_cancel_timeout(priv, 100))
3534                         IWL_WARNING("Could not cancel scan.\n");
3535                 else {
3536                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3537                         priv->staging_rxon.flags = cpu_to_le32(flags);
3538                         iwl_commit_rxon(priv);
3539                 }
3540         }
3541         mutex_unlock(&priv->mutex);
3542
3543         return count;
3544 }
3545
3546 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3547
3548 static ssize_t show_filter_flags(struct device *d,
3549                                  struct device_attribute *attr, char *buf)
3550 {
3551         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3552
3553         return sprintf(buf, "0x%04X\n",
3554                 le32_to_cpu(priv->active_rxon.filter_flags));
3555 }
3556
3557 static ssize_t store_filter_flags(struct device *d,
3558                                   struct device_attribute *attr,
3559                                   const char *buf, size_t count)
3560 {
3561         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3562         unsigned long val;
3563         u32 filter_flags;
3564         int ret = strict_strtoul(buf, 0, &val);
3565         if (ret)
3566                 return ret;
3567         filter_flags = (u32)val;
3568
3569         mutex_lock(&priv->mutex);
3570         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3571                 /* Cancel any currently running scans... */
3572                 if (iwl_scan_cancel_timeout(priv, 100))
3573                         IWL_WARNING("Could not cancel scan.\n");
3574                 else {
3575                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3576                                        "0x%04X\n", filter_flags);
3577                         priv->staging_rxon.filter_flags =
3578                                 cpu_to_le32(filter_flags);
3579                         iwl_commit_rxon(priv);
3580                 }
3581         }
3582         mutex_unlock(&priv->mutex);
3583
3584         return count;
3585 }
3586
3587 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3588                    store_filter_flags);
3589
3590 static ssize_t store_retry_rate(struct device *d,
3591                                 struct device_attribute *attr,
3592                                 const char *buf, size_t count)
3593 {
3594         struct iwl_priv *priv = dev_get_drvdata(d);
3595         long val;
3596         int ret  = strict_strtol(buf, 10, &val);
3597         if (!ret)
3598                 return ret;
3599
3600         priv->retry_rate = (val > 0) ? val : 1;
3601
3602         return count;
3603 }
3604
3605 static ssize_t show_retry_rate(struct device *d,
3606                                struct device_attribute *attr, char *buf)
3607 {
3608         struct iwl_priv *priv = dev_get_drvdata(d);
3609         return sprintf(buf, "%d", priv->retry_rate);
3610 }
3611
3612 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3613                    store_retry_rate);
3614
3615 static ssize_t store_power_level(struct device *d,
3616                                  struct device_attribute *attr,
3617                                  const char *buf, size_t count)
3618 {
3619         struct iwl_priv *priv = dev_get_drvdata(d);
3620         int ret;
3621         unsigned long mode;
3622
3623
3624         mutex_lock(&priv->mutex);
3625
3626         if (!iwl_is_ready(priv)) {
3627                 ret = -EAGAIN;
3628                 goto out;
3629         }
3630
3631         ret = strict_strtoul(buf, 10, &mode);
3632         if (ret)
3633                 goto out;
3634
3635         ret = iwl_power_set_user_mode(priv, mode);
3636         if (ret) {
3637                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3638                 goto out;
3639         }
3640         ret = count;
3641
3642  out:
3643         mutex_unlock(&priv->mutex);
3644         return ret;
3645 }
3646
3647 static ssize_t show_power_level(struct device *d,
3648                                 struct device_attribute *attr, char *buf)
3649 {
3650         struct iwl_priv *priv = dev_get_drvdata(d);
3651         int mode = priv->power_data.user_power_setting;
3652         int system = priv->power_data.system_power_setting;
3653         int level = priv->power_data.power_mode;
3654         char *p = buf;
3655
3656         switch (system) {
3657         case IWL_POWER_SYS_AUTO:
3658                 p += sprintf(p, "SYSTEM:auto");
3659                 break;
3660         case IWL_POWER_SYS_AC:
3661                 p += sprintf(p, "SYSTEM:ac");
3662                 break;
3663         case IWL_POWER_SYS_BATTERY:
3664                 p += sprintf(p, "SYSTEM:battery");
3665                 break;
3666         }
3667
3668         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3669                         "fixed" : "auto");
3670         p += sprintf(p, "\tINDEX:%d", level);
3671         p += sprintf(p, "\n");
3672         return p - buf + 1;
3673 }
3674
3675 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3676                    store_power_level);
3677
3678 static ssize_t show_channels(struct device *d,
3679                              struct device_attribute *attr, char *buf)
3680 {
3681
3682         struct iwl_priv *priv = dev_get_drvdata(d);
3683         struct ieee80211_channel *channels = NULL;
3684         const struct ieee80211_supported_band *supp_band = NULL;
3685         int len = 0, i;
3686         int count = 0;
3687
3688         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3689                 return -EAGAIN;
3690
3691         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3692         channels = supp_band->channels;
3693         count = supp_band->n_channels;
3694
3695         len += sprintf(&buf[len],
3696                         "Displaying %d channels in 2.4GHz band "
3697                         "(802.11bg):\n", count);
3698
3699         for (i = 0; i < count; i++)
3700                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3701                                 ieee80211_frequency_to_channel(
3702                                 channels[i].center_freq),
3703                                 channels[i].max_power,
3704                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3705                                 " (IEEE 802.11h required)" : "",
3706                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3707                                 || (channels[i].flags &
3708                                 IEEE80211_CHAN_RADAR)) ? "" :
3709                                 ", IBSS",
3710                                 channels[i].flags &
3711                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3712                                 "passive only" : "active/passive");
3713
3714         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3715         channels = supp_band->channels;
3716         count = supp_band->n_channels;
3717
3718         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3719                         "(802.11a):\n", count);
3720
3721         for (i = 0; i < count; i++)
3722                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3723                                 ieee80211_frequency_to_channel(
3724                                 channels[i].center_freq),
3725                                 channels[i].max_power,
3726                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3727                                 " (IEEE 802.11h required)" : "",
3728                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3729                                 || (channels[i].flags &
3730                                 IEEE80211_CHAN_RADAR)) ? "" :
3731                                 ", IBSS",
3732                                 channels[i].flags &
3733                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3734                                 "passive only" : "active/passive");
3735
3736         return len;
3737 }
3738
3739 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3740
3741 static ssize_t show_statistics(struct device *d,
3742                                struct device_attribute *attr, char *buf)
3743 {
3744         struct iwl_priv *priv = dev_get_drvdata(d);
3745         u32 size = sizeof(struct iwl_notif_statistics);
3746         u32 len = 0, ofs = 0;
3747         u8 *data = (u8 *)&priv->statistics;
3748         int rc = 0;
3749
3750         if (!iwl_is_alive(priv))
3751                 return -EAGAIN;
3752
3753         mutex_lock(&priv->mutex);
3754         rc = iwl_send_statistics_request(priv, 0);
3755         mutex_unlock(&priv->mutex);
3756
3757         if (rc) {
3758                 len = sprintf(buf,
3759                               "Error sending statistics request: 0x%08X\n", rc);
3760                 return len;
3761         }
3762
3763         while (size && (PAGE_SIZE - len)) {
3764                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3765                                    PAGE_SIZE - len, 1);
3766                 len = strlen(buf);
3767                 if (PAGE_SIZE - len)
3768                         buf[len++] = '\n';
3769
3770                 ofs += 16;
3771                 size -= min(size, 16U);
3772         }
3773
3774         return len;
3775 }
3776
3777 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3778
3779 static ssize_t show_status(struct device *d,
3780                            struct device_attribute *attr, char *buf)
3781 {
3782         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3783         if (!iwl_is_alive(priv))
3784                 return -EAGAIN;
3785         return sprintf(buf, "0x%08x\n", (int)priv->status);
3786 }
3787
3788 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3789
3790 /*****************************************************************************
3791  *
3792  * driver setup and teardown
3793  *
3794  *****************************************************************************/
3795
3796 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3797 {
3798         priv->workqueue = create_workqueue(DRV_NAME);
3799
3800         init_waitqueue_head(&priv->wait_command_queue);
3801
3802         INIT_WORK(&priv->up, iwl_bg_up);
3803         INIT_WORK(&priv->restart, iwl_bg_restart);
3804         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3805         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3806         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3807         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3808         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3809         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3810
3811         iwl_setup_scan_deferred_work(priv);
3812         iwl_setup_power_deferred_work(priv);
3813
3814         if (priv->cfg->ops->lib->setup_deferred_work)
3815                 priv->cfg->ops->lib->setup_deferred_work(priv);
3816
3817         init_timer(&priv->statistics_periodic);
3818         priv->statistics_periodic.data = (unsigned long)priv;
3819         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3820
3821         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3822                      iwl_irq_tasklet, (unsigned long)priv);
3823 }
3824
3825 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3826 {
3827         if (priv->cfg->ops->lib->cancel_deferred_work)
3828                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3829
3830         cancel_delayed_work_sync(&priv->init_alive_start);
3831         cancel_delayed_work(&priv->scan_check);
3832         cancel_delayed_work_sync(&priv->set_power_save);
3833         cancel_delayed_work(&priv->alive_start);
3834         cancel_work_sync(&priv->beacon_update);
3835         del_timer_sync(&priv->statistics_periodic);
3836 }
3837
3838 static struct attribute *iwl_sysfs_entries[] = {
3839         &dev_attr_channels.attr,
3840         &dev_attr_flags.attr,
3841         &dev_attr_filter_flags.attr,
3842         &dev_attr_power_level.attr,
3843         &dev_attr_retry_rate.attr,
3844         &dev_attr_statistics.attr,
3845         &dev_attr_status.attr,
3846         &dev_attr_temperature.attr,
3847         &dev_attr_tx_power.attr,
3848 #ifdef CONFIG_IWLWIFI_DEBUG
3849         &dev_attr_debug_level.attr,
3850 #endif
3851         &dev_attr_version.attr,
3852
3853         NULL
3854 };
3855
3856 static struct attribute_group iwl_attribute_group = {
3857         .name = NULL,           /* put in device directory */
3858         .attrs = iwl_sysfs_entries,
3859 };
3860
3861 static struct ieee80211_ops iwl_hw_ops = {
3862         .tx = iwl_mac_tx,
3863         .start = iwl_mac_start,
3864         .stop = iwl_mac_stop,
3865         .add_interface = iwl_mac_add_interface,
3866         .remove_interface = iwl_mac_remove_interface,
3867         .config = iwl_mac_config,
3868         .config_interface = iwl_mac_config_interface,
3869         .configure_filter = iwl_configure_filter,
3870         .set_key = iwl_mac_set_key,
3871         .update_tkip_key = iwl_mac_update_tkip_key,
3872         .get_stats = iwl_mac_get_stats,
3873         .get_tx_stats = iwl_mac_get_tx_stats,
3874         .conf_tx = iwl_mac_conf_tx,
3875         .reset_tsf = iwl_mac_reset_tsf,
3876         .bss_info_changed = iwl_bss_info_changed,
3877         .ampdu_action = iwl_mac_ampdu_action,
3878         .hw_scan = iwl_mac_hw_scan
3879 };
3880
3881 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3882 {
3883         int err = 0;
3884         struct iwl_priv *priv;
3885         struct ieee80211_hw *hw;
3886         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3887         unsigned long flags;
3888
3889         /************************
3890          * 1. Allocating HW data
3891          ************************/
3892
3893         /* Disabling hardware scan means that mac80211 will perform scans
3894          * "the hard way", rather than using device's scan. */
3895         if (cfg->mod_params->disable_hw_scan) {
3896                 if (cfg->mod_params->debug & IWL_DL_INFO)
3897                         dev_printk(KERN_DEBUG, &(pdev->dev),
3898                                    "Disabling hw_scan\n");
3899                 iwl_hw_ops.hw_scan = NULL;
3900         }
3901
3902         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3903         if (!hw) {
3904                 err = -ENOMEM;
3905                 goto out;
3906         }
3907         priv = hw->priv;
3908         /* At this point both hw and priv are allocated. */
3909
3910         SET_IEEE80211_DEV(hw, &pdev->dev);
3911
3912         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3913         priv->cfg = cfg;
3914         priv->pci_dev = pdev;
3915
3916 #ifdef CONFIG_IWLWIFI_DEBUG
3917         priv->debug_level = priv->cfg->mod_params->debug;
3918         atomic_set(&priv->restrict_refcnt, 0);
3919 #endif
3920
3921         /**************************
3922          * 2. Initializing PCI bus
3923          **************************/
3924         if (pci_enable_device(pdev)) {
3925                 err = -ENODEV;
3926                 goto out_ieee80211_free_hw;
3927         }
3928
3929         pci_set_master(pdev);
3930
3931         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3932         if (!err)
3933                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3934         if (err) {
3935                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3936                 if (!err)
3937                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3938                 /* both attempts failed: */
3939                 if (err) {
3940                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3941                                 DRV_NAME);
3942                         goto out_pci_disable_device;
3943                 }
3944         }
3945
3946         err = pci_request_regions(pdev, DRV_NAME);
3947         if (err)
3948                 goto out_pci_disable_device;
3949
3950         pci_set_drvdata(pdev, priv);
3951
3952
3953         /***********************
3954          * 3. Read REV register
3955          ***********************/
3956         priv->hw_base = pci_iomap(pdev, 0, 0);
3957         if (!priv->hw_base) {
3958                 err = -ENODEV;
3959                 goto out_pci_release_regions;
3960         }
3961
3962         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3963                 (unsigned long long) pci_resource_len(pdev, 0));
3964         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3965
3966         iwl_hw_detect(priv);
3967         printk(KERN_INFO DRV_NAME
3968                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3969                 priv->cfg->name, priv->hw_rev);
3970
3971         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3972          * PCI Tx retries from interfering with C3 CPU state */
3973         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3974
3975         /* amp init */
3976         err = priv->cfg->ops->lib->apm_ops.init(priv);
3977         if (err < 0) {
3978                 IWL_DEBUG_INFO("Failed to init APMG\n");
3979                 goto out_iounmap;
3980         }
3981         /*****************
3982          * 4. Read EEPROM
3983          *****************/
3984         /* Read the EEPROM */
3985         err = iwl_eeprom_init(priv);
3986         if (err) {
3987                 IWL_ERROR("Unable to init EEPROM\n");
3988                 goto out_iounmap;
3989         }
3990         err = iwl_eeprom_check_version(priv);
3991         if (err)
3992                 goto out_iounmap;
3993
3994         /* extract MAC Address */
3995         iwl_eeprom_get_mac(priv, priv->mac_addr);
3996         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3997         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3998
3999         /************************
4000          * 5. Setup HW constants
4001          ************************/
4002         if (iwl_set_hw_params(priv)) {
4003                 IWL_ERROR("failed to set hw parameters\n");
4004                 goto out_free_eeprom;
4005         }
4006
4007         /*******************
4008          * 6. Setup priv
4009          *******************/
4010
4011         err = iwl_init_drv(priv);
4012         if (err)
4013                 goto out_free_eeprom;
4014         /* At this point both hw and priv are initialized. */
4015
4016         /**********************************
4017          * 7. Initialize module parameters
4018          **********************************/
4019
4020         /* Disable radio (SW RF KILL) via parameter when loading driver */
4021         if (priv->cfg->mod_params->disable) {
4022                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4023                 IWL_DEBUG_INFO("Radio disabled.\n");
4024         }
4025
4026         /********************
4027          * 8. Setup services
4028          ********************/
4029         spin_lock_irqsave(&priv->lock, flags);
4030         iwl_disable_interrupts(priv);
4031         spin_unlock_irqrestore(&priv->lock, flags);
4032
4033         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
4034         if (err) {
4035                 IWL_ERROR("failed to create sysfs device attributes\n");
4036                 goto out_uninit_drv;
4037         }
4038
4039
4040         iwl_setup_deferred_work(priv);
4041         iwl_setup_rx_handlers(priv);
4042
4043         /********************
4044          * 9. Conclude
4045          ********************/
4046         pci_save_state(pdev);
4047         pci_disable_device(pdev);
4048
4049         /**********************************
4050          * 10. Setup and register mac80211
4051          **********************************/
4052
4053         err = iwl_setup_mac(priv);
4054         if (err)
4055                 goto out_remove_sysfs;
4056
4057         err = iwl_dbgfs_register(priv, DRV_NAME);
4058         if (err)
4059                 IWL_ERROR("failed to create debugfs files\n");
4060
4061         err = iwl_rfkill_init(priv);
4062         if (err)
4063                 IWL_ERROR("Unable to initialize RFKILL system. "
4064                                   "Ignoring error: %d\n", err);
4065         iwl_power_initialize(priv);
4066         return 0;
4067
4068  out_remove_sysfs:
4069         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4070  out_uninit_drv:
4071         iwl_uninit_drv(priv);
4072  out_free_eeprom:
4073         iwl_eeprom_free(priv);
4074  out_iounmap:
4075         pci_iounmap(pdev, priv->hw_base);
4076  out_pci_release_regions:
4077         pci_release_regions(pdev);
4078         pci_set_drvdata(pdev, NULL);
4079  out_pci_disable_device:
4080         pci_disable_device(pdev);
4081  out_ieee80211_free_hw:
4082         ieee80211_free_hw(priv->hw);
4083  out:
4084         return err;
4085 }
4086
4087 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4088 {
4089         struct iwl_priv *priv = pci_get_drvdata(pdev);
4090         unsigned long flags;
4091
4092         if (!priv)
4093                 return;
4094
4095         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4096
4097         iwl_dbgfs_unregister(priv);
4098         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4099
4100         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4101          * to be called and iwl_down since we are removing the device
4102          * we need to set STATUS_EXIT_PENDING bit.
4103          */
4104         set_bit(STATUS_EXIT_PENDING, &priv->status);
4105         if (priv->mac80211_registered) {
4106                 ieee80211_unregister_hw(priv->hw);
4107                 priv->mac80211_registered = 0;
4108         } else {
4109                 iwl_down(priv);
4110         }
4111
4112         /* make sure we flush any pending irq or
4113          * tasklet for the driver
4114          */
4115         spin_lock_irqsave(&priv->lock, flags);
4116         iwl_disable_interrupts(priv);
4117         spin_unlock_irqrestore(&priv->lock, flags);
4118
4119         iwl_synchronize_irq(priv);
4120
4121         iwl_rfkill_unregister(priv);
4122         iwl_dealloc_ucode_pci(priv);
4123
4124         if (priv->rxq.bd)
4125                 iwl_rx_queue_free(priv, &priv->rxq);
4126         iwl_hw_txq_ctx_free(priv);
4127
4128         iwl_clear_stations_table(priv);
4129         iwl_eeprom_free(priv);
4130
4131
4132         /*netif_stop_queue(dev); */
4133         flush_workqueue(priv->workqueue);
4134
4135         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4136          * priv->workqueue... so we can't take down the workqueue
4137          * until now... */
4138         destroy_workqueue(priv->workqueue);
4139         priv->workqueue = NULL;
4140
4141         pci_iounmap(pdev, priv->hw_base);
4142         pci_release_regions(pdev);
4143         pci_disable_device(pdev);
4144         pci_set_drvdata(pdev, NULL);
4145
4146         iwl_uninit_drv(priv);
4147
4148         if (priv->ibss_beacon)
4149                 dev_kfree_skb(priv->ibss_beacon);
4150
4151         ieee80211_free_hw(priv->hw);
4152 }
4153
4154 #ifdef CONFIG_PM
4155
4156 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4157 {
4158         struct iwl_priv *priv = pci_get_drvdata(pdev);
4159
4160         if (priv->is_open) {
4161                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4162                 iwl_mac_stop(priv->hw);
4163                 priv->is_open = 1;
4164         }
4165
4166         pci_set_power_state(pdev, PCI_D3hot);
4167
4168         return 0;
4169 }
4170
4171 static int iwl_pci_resume(struct pci_dev *pdev)
4172 {
4173         struct iwl_priv *priv = pci_get_drvdata(pdev);
4174
4175         pci_set_power_state(pdev, PCI_D0);
4176
4177         if (priv->is_open)
4178                 iwl_mac_start(priv->hw);
4179
4180         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4181         return 0;
4182 }
4183
4184 #endif /* CONFIG_PM */
4185
4186 /*****************************************************************************
4187  *
4188  * driver and module entry point
4189  *
4190  *****************************************************************************/
4191
4192 /* Hardware specific file defines the PCI IDs table for that hardware module */
4193 static struct pci_device_id iwl_hw_card_ids[] = {
4194 #ifdef CONFIG_IWL4965
4195         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4196         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4197 #endif /* CONFIG_IWL4965 */
4198 #ifdef CONFIG_IWL5000
4199         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4200         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4201         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4202         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4203         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4204         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4205         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4206         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4207         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4208         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4209 /* 5350 WiFi/WiMax */
4210         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4211         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4212         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4213 /* 5150 Wifi/WiMax */
4214         {IWL_PCI_DEVICE(0x423C, PCI_ANY_ID, iwl5150_agn_cfg)},
4215         {IWL_PCI_DEVICE(0x423D, PCI_ANY_ID, iwl5150_agn_cfg)},
4216 #endif /* CONFIG_IWL5000 */
4217
4218         {0}
4219 };
4220 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4221
4222 static struct pci_driver iwl_driver = {
4223         .name = DRV_NAME,
4224         .id_table = iwl_hw_card_ids,
4225         .probe = iwl_pci_probe,
4226         .remove = __devexit_p(iwl_pci_remove),
4227 #ifdef CONFIG_PM
4228         .suspend = iwl_pci_suspend,
4229         .resume = iwl_pci_resume,
4230 #endif
4231 };
4232
4233 static int __init iwl_init(void)
4234 {
4235
4236         int ret;
4237         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4238         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4239
4240         ret = iwlagn_rate_control_register();
4241         if (ret) {
4242                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4243                 return ret;
4244         }
4245
4246         ret = pci_register_driver(&iwl_driver);
4247         if (ret) {
4248                 IWL_ERROR("Unable to initialize PCI module\n");
4249                 goto error_register;
4250         }
4251
4252         return ret;
4253
4254 error_register:
4255         iwlagn_rate_control_unregister();
4256         return ret;
4257 }
4258
4259 static void __exit iwl_exit(void)
4260 {
4261         pci_unregister_driver(&iwl_driver);
4262         iwlagn_rate_control_unregister();
4263 }
4264
4265 module_exit(iwl_exit);
4266 module_init(iwl_init);