git.oblomov.eu Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl-agn.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * 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                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->aligned_dma_addr,
1232                                             priv->hw_params.rx_buf_size,
1233                                             PCI_DMA_FROMDEVICE);
1234                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1235
1236                 /* Reclaim a command buffer only if this packet is a response
1237                  *   to a (driver-originated) command.
1238                  * If the packet (e.g. Rx frame) originated from uCode,
1239                  *   there is no command buffer to reclaim.
1240                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1241                  *   but apparently a few don't get set; catch them here. */
1242                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1243                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1244                         (pkt->hdr.cmd != REPLY_RX) &&
1245                         (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
1246                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1247                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1248                         (pkt->hdr.cmd != REPLY_TX);
1249
1250                 /* Based on type of command response or notification,
1251                  *   handle those that need handling via function in
1252                  *   rx_handlers table.  See iwl_setup_rx_handlers() */
1253                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1254                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1255                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1256                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1257                 } else {
1258                         /* No handling needed */
1259                         IWL_DEBUG(IWL_DL_RX,
1260                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1261                                 r, i, get_cmd_string(pkt->hdr.cmd),
1262                                 pkt->hdr.cmd);
1263                 }
1264
1265                 if (reclaim) {
1266                         /* Invoke any callbacks, transfer the skb to caller, and
1267                          * fire off the (possibly) blocking iwl_send_cmd()
1268                          * as we reclaim the driver command queue */
1269                         if (rxb && rxb->skb)
1270                                 iwl_tx_cmd_complete(priv, rxb);
1271                         else
1272                                 IWL_WARNING("Claim null rxb?\n");
1273                 }
1274
1275                 /* For now we just don't re-use anything.  We can tweak this
1276                  * later to try and re-use notification packets and SKBs that
1277                  * fail to Rx correctly */
1278                 if (rxb->skb != NULL) {
1279                         priv->alloc_rxb_skb--;
1280                         dev_kfree_skb_any(rxb->skb);
1281                         rxb->skb = NULL;
1282                 }
1283
1284                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1285                                  priv->hw_params.rx_buf_size + 256,
1286                                  PCI_DMA_FROMDEVICE);
1287                 spin_lock_irqsave(&rxq->lock, flags);
1288                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1289                 spin_unlock_irqrestore(&rxq->lock, flags);
1290                 i = (i + 1) & RX_QUEUE_MASK;
1291                 /* If there are a lot of unused frames,
1292                  * restock the Rx queue so ucode wont assert. */
1293                 if (fill_rx) {
1294                         count++;
1295                         if (count >= 8) {
1296                                 priv->rxq.read = i;
1297                                 __iwl_rx_replenish(priv);
1298                                 count = 0;
1299                         }
1300                 }
1301         }
1302
1303         /* Backtrack one entry */
1304         priv->rxq.read = i;
1305         iwl_rx_queue_restock(priv);
1306 }
1307
1308 #ifdef CONFIG_IWLWIFI_DEBUG
1309 static void iwl_print_rx_config_cmd(struct iwl_priv *priv)
1310 {
1311         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1312
1313         IWL_DEBUG_RADIO("RX CONFIG:\n");
1314         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1315         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1316         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1317         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1318                         le32_to_cpu(rxon->filter_flags));
1319         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1320         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1321                         rxon->ofdm_basic_rates);
1322         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1323         IWL_DEBUG_RADIO("u8[6] node_addr: %pM\n", rxon->node_addr);
1324         IWL_DEBUG_RADIO("u8[6] bssid_addr: %pM\n", rxon->bssid_addr);
1325         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1326 }
1327 #endif
1328
1329 static void iwl_enable_interrupts(struct iwl_priv *priv)
1330 {
1331         IWL_DEBUG_ISR("Enabling interrupts\n");
1332         set_bit(STATUS_INT_ENABLED, &priv->status);
1333         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1334 }
1335
1336 /* call this function to flush any scheduled tasklet */
1337 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1338 {
1339         /* wait to make sure we flush pending tasklet*/
1340         synchronize_irq(priv->pci_dev->irq);
1341         tasklet_kill(&priv->irq_tasklet);
1342 }
1343
1344 static inline void iwl_disable_interrupts(struct iwl_priv *priv)
1345 {
1346         clear_bit(STATUS_INT_ENABLED, &priv->status);
1347
1348         /* disable interrupts from uCode/NIC to host */
1349         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1350
1351         /* acknowledge/clear/reset any interrupts still pending
1352          * from uCode or flow handler (Rx/Tx DMA) */
1353         iwl_write32(priv, CSR_INT, 0xffffffff);
1354         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1355         IWL_DEBUG_ISR("Disabled interrupts\n");
1356 }
1357
1358
1359 /**
1360  * iwl_irq_handle_error - called for HW or SW error interrupt from card
1361  */
1362 static void iwl_irq_handle_error(struct iwl_priv *priv)
1363 {
1364         /* Set the FW error flag -- cleared on iwl_down */
1365         set_bit(STATUS_FW_ERROR, &priv->status);
1366
1367         /* Cancel currently queued command. */
1368         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1369
1370 #ifdef CONFIG_IWLWIFI_DEBUG
1371         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1372                 iwl_dump_nic_error_log(priv);
1373                 iwl_dump_nic_event_log(priv);
1374                 iwl_print_rx_config_cmd(priv);
1375         }
1376 #endif
1377
1378         wake_up_interruptible(&priv->wait_command_queue);
1379
1380         /* Keep the restart process from trying to send host
1381          * commands by clearing the INIT status bit */
1382         clear_bit(STATUS_READY, &priv->status);
1383
1384         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1385                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1386                           "Restarting adapter due to uCode error.\n");
1387
1388                 if (iwl_is_associated(priv)) {
1389                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1390                                sizeof(priv->recovery_rxon));
1391                         priv->error_recovering = 1;
1392                 }
1393                 if (priv->cfg->mod_params->restart_fw)
1394                         queue_work(priv->workqueue, &priv->restart);
1395         }
1396 }
1397
1398 static void iwl_error_recovery(struct iwl_priv *priv)
1399 {
1400         unsigned long flags;
1401
1402         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1403                sizeof(priv->staging_rxon));
1404         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1405         iwl_commit_rxon(priv);
1406
1407         iwl_rxon_add_station(priv, priv->bssid, 1);
1408
1409         spin_lock_irqsave(&priv->lock, flags);
1410         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1411         priv->error_recovering = 0;
1412         spin_unlock_irqrestore(&priv->lock, flags);
1413 }
1414
1415 static void iwl_irq_tasklet(struct iwl_priv *priv)
1416 {
1417         u32 inta, handled = 0;
1418         u32 inta_fh;
1419         unsigned long flags;
1420 #ifdef CONFIG_IWLWIFI_DEBUG
1421         u32 inta_mask;
1422 #endif
1423
1424         spin_lock_irqsave(&priv->lock, flags);
1425
1426         /* Ack/clear/reset pending uCode interrupts.
1427          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1428          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1429         inta = iwl_read32(priv, CSR_INT);
1430         iwl_write32(priv, CSR_INT, inta);
1431
1432         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1433          * Any new interrupts that happen after this, either while we're
1434          * in this tasklet, or later, will show up in next ISR/tasklet. */
1435         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1436         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1437
1438 #ifdef CONFIG_IWLWIFI_DEBUG
1439         if (priv->debug_level & IWL_DL_ISR) {
1440                 /* just for debug */
1441                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1442                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1443                               inta, inta_mask, inta_fh);
1444         }
1445 #endif
1446
1447         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1448          * atomic, make sure that inta covers all the interrupts that
1449          * we've discovered, even if FH interrupt came in just after
1450          * reading CSR_INT. */
1451         if (inta_fh & CSR49_FH_INT_RX_MASK)
1452                 inta |= CSR_INT_BIT_FH_RX;
1453         if (inta_fh & CSR49_FH_INT_TX_MASK)
1454                 inta |= CSR_INT_BIT_FH_TX;
1455
1456         /* Now service all interrupt bits discovered above. */
1457         if (inta & CSR_INT_BIT_HW_ERR) {
1458                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1459
1460                 /* Tell the device to stop sending interrupts */
1461                 iwl_disable_interrupts(priv);
1462
1463                 iwl_irq_handle_error(priv);
1464
1465                 handled |= CSR_INT_BIT_HW_ERR;
1466
1467                 spin_unlock_irqrestore(&priv->lock, flags);
1468
1469                 return;
1470         }
1471
1472 #ifdef CONFIG_IWLWIFI_DEBUG
1473         if (priv->debug_level & (IWL_DL_ISR)) {
1474                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1475                 if (inta & CSR_INT_BIT_SCD)
1476                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1477                                       "the frame/frames.\n");
1478
1479                 /* Alive notification via Rx interrupt will do the real work */
1480                 if (inta & CSR_INT_BIT_ALIVE)
1481                         IWL_DEBUG_ISR("Alive interrupt\n");
1482         }
1483 #endif
1484         /* Safely ignore these bits for debug checks below */
1485         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1486
1487         /* HW RF KILL switch toggled */
1488         if (inta & CSR_INT_BIT_RF_KILL) {
1489                 int hw_rf_kill = 0;
1490                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1491                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1492                         hw_rf_kill = 1;
1493
1494                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1495                                 hw_rf_kill ? "disable radio" : "enable radio");
1496
1497                 /* driver only loads ucode once setting the interface up.
1498                  * the driver as well won't allow loading if RFKILL is set
1499                  * therefore no need to restart the driver from this handler
1500                  */
1501                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1502                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1503
1504                 handled |= CSR_INT_BIT_RF_KILL;
1505         }
1506
1507         /* Chip got too hot and stopped itself */
1508         if (inta & CSR_INT_BIT_CT_KILL) {
1509                 IWL_ERROR("Microcode CT kill error detected.\n");
1510                 handled |= CSR_INT_BIT_CT_KILL;
1511         }
1512
1513         /* Error detected by uCode */
1514         if (inta & CSR_INT_BIT_SW_ERR) {
1515                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1516                           inta);
1517                 iwl_irq_handle_error(priv);
1518                 handled |= CSR_INT_BIT_SW_ERR;
1519         }
1520
1521         /* uCode wakes up after power-down sleep */
1522         if (inta & CSR_INT_BIT_WAKEUP) {
1523                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1524                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1525                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1526                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1527                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1528                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1529                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1530                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1531
1532                 handled |= CSR_INT_BIT_WAKEUP;
1533         }
1534
1535         /* All uCode command responses, including Tx command responses,
1536          * Rx "responses" (frame-received notification), and other
1537          * notifications from uCode come through here*/
1538         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1539                 iwl_rx_handle(priv);
1540                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1541         }
1542
1543         if (inta & CSR_INT_BIT_FH_TX) {
1544                 IWL_DEBUG_ISR("Tx interrupt\n");
1545                 handled |= CSR_INT_BIT_FH_TX;
1546                 /* FH finished to write, send event */
1547                 priv->ucode_write_complete = 1;
1548                 wake_up_interruptible(&priv->wait_command_queue);
1549         }
1550
1551         if (inta & ~handled)
1552                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1553
1554         if (inta & ~CSR_INI_SET_MASK) {
1555                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1556                          inta & ~CSR_INI_SET_MASK);
1557                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1558         }
1559
1560         /* Re-enable all interrupts */
1561         /* only Re-enable if diabled by irq */
1562         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1563                 iwl_enable_interrupts(priv);
1564
1565 #ifdef CONFIG_IWLWIFI_DEBUG
1566         if (priv->debug_level & (IWL_DL_ISR)) {
1567                 inta = iwl_read32(priv, CSR_INT);
1568                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1569                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1570                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1571                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1572         }
1573 #endif
1574         spin_unlock_irqrestore(&priv->lock, flags);
1575 }
1576
1577 static irqreturn_t iwl_isr(int irq, void *data)
1578 {
1579         struct iwl_priv *priv = data;
1580         u32 inta, inta_mask;
1581         u32 inta_fh;
1582         if (!priv)
1583                 return IRQ_NONE;
1584
1585         spin_lock(&priv->lock);
1586
1587         /* Disable (but don't clear!) interrupts here to avoid
1588          *    back-to-back ISRs and sporadic interrupts from our NIC.
1589          * If we have something to service, the tasklet will re-enable ints.
1590          * If we *don't* have something, we'll re-enable before leaving here. */
1591         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1592         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1593
1594         /* Discover which interrupts are active/pending */
1595         inta = iwl_read32(priv, CSR_INT);
1596         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1597
1598         /* Ignore interrupt if there's nothing in NIC to service.
1599          * This may be due to IRQ shared with another device,
1600          * or due to sporadic interrupts thrown from our NIC. */
1601         if (!inta && !inta_fh) {
1602                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1603                 goto none;
1604         }
1605
1606         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1607                 /* Hardware disappeared. It might have already raised
1608                  * an interrupt */
1609                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1610                 goto unplugged;
1611         }
1612
1613         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1614                       inta, inta_mask, inta_fh);
1615
1616         inta &= ~CSR_INT_BIT_SCD;
1617
1618         /* iwl_irq_tasklet() will service interrupts and re-enable them */
1619         if (likely(inta || inta_fh))
1620                 tasklet_schedule(&priv->irq_tasklet);
1621
1622  unplugged:
1623         spin_unlock(&priv->lock);
1624         return IRQ_HANDLED;
1625
1626  none:
1627         /* re-enable interrupts here since we don't have anything to service. */
1628         /* only Re-enable if diabled by irq */
1629         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1630                 iwl_enable_interrupts(priv);
1631         spin_unlock(&priv->lock);
1632         return IRQ_NONE;
1633 }
1634
1635 /******************************************************************************
1636  *
1637  * uCode download functions
1638  *
1639  ******************************************************************************/
1640
1641 static void iwl_dealloc_ucode_pci(struct iwl_priv *priv)
1642 {
1643         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1644         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1645         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1646         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1647         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1648         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1649 }
1650
1651 static void iwl_nic_start(struct iwl_priv *priv)
1652 {
1653         /* Remove all resets to allow NIC to operate */
1654         iwl_write32(priv, CSR_RESET, 0);
1655 }
1656
1657
1658 /**
1659  * iwl_read_ucode - Read uCode images from disk file.
1660  *
1661  * Copy into buffers for card to fetch via bus-mastering
1662  */
1663 static int iwl_read_ucode(struct iwl_priv *priv)
1664 {
1665         struct iwl_ucode *ucode;
1666         int ret;
1667         const struct firmware *ucode_raw;
1668         const char *name = priv->cfg->fw_name;
1669         u8 *src;
1670         size_t len;
1671         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1672
1673         /* Ask kernel firmware_class module to get the boot firmware off disk.
1674          * request_firmware() is synchronous, file is in memory on return. */
1675         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1676         if (ret < 0) {
1677                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1678                                         name, ret);
1679                 goto error;
1680         }
1681
1682         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1683                        name, ucode_raw->size);
1684
1685         /* Make sure that we got at least our header! */
1686         if (ucode_raw->size < sizeof(*ucode)) {
1687                 IWL_ERROR("File size way too small!\n");
1688                 ret = -EINVAL;
1689                 goto err_release;
1690         }
1691
1692         /* Data from ucode file:  header followed by uCode images */
1693         ucode = (void *)ucode_raw->data;
1694
1695         ver = le32_to_cpu(ucode->ver);
1696         inst_size = le32_to_cpu(ucode->inst_size);
1697         data_size = le32_to_cpu(ucode->data_size);
1698         init_size = le32_to_cpu(ucode->init_size);
1699         init_data_size = le32_to_cpu(ucode->init_data_size);
1700         boot_size = le32_to_cpu(ucode->boot_size);
1701
1702         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1703         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1704                        inst_size);
1705         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1706                        data_size);
1707         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1708                        init_size);
1709         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1710                        init_data_size);
1711         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1712                        boot_size);
1713
1714         /* Verify size of file vs. image size info in file's header */
1715         if (ucode_raw->size < sizeof(*ucode) +
1716                 inst_size + data_size + init_size +
1717                 init_data_size + boot_size) {
1718
1719                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1720                                (int)ucode_raw->size);
1721                 ret = -EINVAL;
1722                 goto err_release;
1723         }
1724
1725         /* Verify that uCode images will fit in card's SRAM */
1726         if (inst_size > priv->hw_params.max_inst_size) {
1727                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1728                                inst_size);
1729                 ret = -EINVAL;
1730                 goto err_release;
1731         }
1732
1733         if (data_size > priv->hw_params.max_data_size) {
1734                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1735                                 data_size);
1736                 ret = -EINVAL;
1737                 goto err_release;
1738         }
1739         if (init_size > priv->hw_params.max_inst_size) {
1740                 IWL_DEBUG_INFO
1741                     ("uCode init instr len %d too large to fit in\n",
1742                       init_size);
1743                 ret = -EINVAL;
1744                 goto err_release;
1745         }
1746         if (init_data_size > priv->hw_params.max_data_size) {
1747                 IWL_DEBUG_INFO
1748                     ("uCode init data len %d too large to fit in\n",
1749                       init_data_size);
1750                 ret = -EINVAL;
1751                 goto err_release;
1752         }
1753         if (boot_size > priv->hw_params.max_bsm_size) {
1754                 IWL_DEBUG_INFO
1755                     ("uCode boot instr len %d too large to fit in\n",
1756                       boot_size);
1757                 ret = -EINVAL;
1758                 goto err_release;
1759         }
1760
1761         /* Allocate ucode buffers for card's bus-master loading ... */
1762
1763         /* Runtime instructions and 2 copies of data:
1764          * 1) unmodified from disk
1765          * 2) backup cache for save/restore during power-downs */
1766         priv->ucode_code.len = inst_size;
1767         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1768
1769         priv->ucode_data.len = data_size;
1770         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1771
1772         priv->ucode_data_backup.len = data_size;
1773         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1774
1775         /* Initialization instructions and data */
1776         if (init_size && init_data_size) {
1777                 priv->ucode_init.len = init_size;
1778                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1779
1780                 priv->ucode_init_data.len = init_data_size;
1781                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1782
1783                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1784                         goto err_pci_alloc;
1785         }
1786
1787         /* Bootstrap (instructions only, no data) */
1788         if (boot_size) {
1789                 priv->ucode_boot.len = boot_size;
1790                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1791
1792                 if (!priv->ucode_boot.v_addr)
1793                         goto err_pci_alloc;
1794         }
1795
1796         /* Copy images into buffers for card's bus-master reads ... */
1797
1798         /* Runtime instructions (first block of data in file) */
1799         src = &ucode->data[0];
1800         len = priv->ucode_code.len;
1801         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1802         memcpy(priv->ucode_code.v_addr, src, len);
1803         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1804                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1805
1806         /* Runtime data (2nd block)
1807          * NOTE:  Copy into backup buffer will be done in iwl_up()  */
1808         src = &ucode->data[inst_size];
1809         len = priv->ucode_data.len;
1810         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1811         memcpy(priv->ucode_data.v_addr, src, len);
1812         memcpy(priv->ucode_data_backup.v_addr, src, len);
1813
1814         /* Initialization instructions (3rd block) */
1815         if (init_size) {
1816                 src = &ucode->data[inst_size + data_size];
1817                 len = priv->ucode_init.len;
1818                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1819                                 len);
1820                 memcpy(priv->ucode_init.v_addr, src, len);
1821         }
1822
1823         /* Initialization data (4th block) */
1824         if (init_data_size) {
1825                 src = &ucode->data[inst_size + data_size + init_size];
1826                 len = priv->ucode_init_data.len;
1827                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1828                                len);
1829                 memcpy(priv->ucode_init_data.v_addr, src, len);
1830         }
1831
1832         /* Bootstrap instructions (5th block) */
1833         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1834         len = priv->ucode_boot.len;
1835         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1836         memcpy(priv->ucode_boot.v_addr, src, len);
1837
1838         /* We have our copies now, allow OS release its copies */
1839         release_firmware(ucode_raw);
1840         return 0;
1841
1842  err_pci_alloc:
1843         IWL_ERROR("failed to allocate pci memory\n");
1844         ret = -ENOMEM;
1845         iwl_dealloc_ucode_pci(priv);
1846
1847  err_release:
1848         release_firmware(ucode_raw);
1849
1850  error:
1851         return ret;
1852 }
1853
1854 /* temporary */
1855 static int iwl_mac_beacon_update(struct ieee80211_hw *hw,
1856                                  struct sk_buff *skb);
1857
1858 /**
1859  * iwl_alive_start - called after REPLY_ALIVE notification received
1860  *                   from protocol/runtime uCode (initialization uCode's
1861  *                   Alive gets handled by iwl_init_alive_start()).
1862  */
1863 static void iwl_alive_start(struct iwl_priv *priv)
1864 {
1865         int ret = 0;
1866
1867         IWL_DEBUG_INFO("Runtime Alive received.\n");
1868
1869         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1870                 /* We had an error bringing up the hardware, so take it
1871                  * all the way back down so we can try again */
1872                 IWL_DEBUG_INFO("Alive failed.\n");
1873                 goto restart;
1874         }
1875
1876         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1877          * This is a paranoid check, because we would not have gotten the
1878          * "runtime" alive if code weren't properly loaded.  */
1879         if (iwl_verify_ucode(priv)) {
1880                 /* Runtime instruction load was bad;
1881                  * take it all the way back down so we can try again */
1882                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1883                 goto restart;
1884         }
1885
1886         iwl_clear_stations_table(priv);
1887         ret = priv->cfg->ops->lib->alive_notify(priv);
1888         if (ret) {
1889                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1890                             ret);
1891                 goto restart;
1892         }
1893
1894         /* After the ALIVE response, we can send host commands to the uCode */
1895         set_bit(STATUS_ALIVE, &priv->status);
1896
1897         if (iwl_is_rfkill(priv))
1898                 return;
1899
1900         ieee80211_wake_queues(priv->hw);
1901
1902         priv->active_rate = priv->rates_mask;
1903         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
1904
1905         if (iwl_is_associated(priv)) {
1906                 struct iwl_rxon_cmd *active_rxon =
1907                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
1908
1909                 memcpy(&priv->staging_rxon, &priv->active_rxon,
1910                        sizeof(priv->staging_rxon));
1911                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1912         } else {
1913                 /* Initialize our rx_config data */
1914                 iwl_connection_init_rx_config(priv, priv->iw_mode);
1915                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1916         }
1917
1918         /* Configure Bluetooth device coexistence support */
1919         iwl_send_bt_config(priv);
1920
1921         iwl_reset_run_time_calib(priv);
1922
1923         /* Configure the adapter for unassociated operation */
1924         iwl_commit_rxon(priv);
1925
1926         /* At this point, the NIC is initialized and operational */
1927         iwl_rf_kill_ct_config(priv);
1928
1929         iwl_leds_register(priv);
1930
1931         IWL_DEBUG_INFO("ALIVE processing complete.\n");
1932         set_bit(STATUS_READY, &priv->status);
1933         wake_up_interruptible(&priv->wait_command_queue);
1934
1935         if (priv->error_recovering)
1936                 iwl_error_recovery(priv);
1937
1938         iwl_power_update_mode(priv, 1);
1939
1940         /* reassociate for ADHOC mode */
1941         if (priv->vif && (priv->iw_mode == NL80211_IFTYPE_ADHOC)) {
1942                 struct sk_buff *beacon = ieee80211_beacon_get(priv->hw,
1943                                                                 priv->vif);
1944                 if (beacon)
1945                         iwl_mac_beacon_update(priv->hw, beacon);
1946         }
1947
1948
1949         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
1950                 iwl_set_mode(priv, priv->iw_mode);
1951
1952         return;
1953
1954  restart:
1955         queue_work(priv->workqueue, &priv->restart);
1956 }
1957
1958 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
1959
1960 static void __iwl_down(struct iwl_priv *priv)
1961 {
1962         unsigned long flags;
1963         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
1964
1965         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
1966
1967         if (!exit_pending)
1968                 set_bit(STATUS_EXIT_PENDING, &priv->status);
1969
1970         iwl_leds_unregister(priv);
1971
1972         iwl_clear_stations_table(priv);
1973
1974         /* Unblock any waiting calls */
1975         wake_up_interruptible_all(&priv->wait_command_queue);
1976
1977         /* Wipe out the EXIT_PENDING status bit if we are not actually
1978          * exiting the module */
1979         if (!exit_pending)
1980                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
1981
1982         /* stop and reset the on-board processor */
1983         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
1984
1985         /* tell the device to stop sending interrupts */
1986         spin_lock_irqsave(&priv->lock, flags);
1987         iwl_disable_interrupts(priv);
1988         spin_unlock_irqrestore(&priv->lock, flags);
1989         iwl_synchronize_irq(priv);
1990
1991         if (priv->mac80211_registered)
1992                 ieee80211_stop_queues(priv->hw);
1993
1994         /* If we have not previously called iwl_init() then
1995          * clear all bits but the RF Kill and SUSPEND bits and return */
1996         if (!iwl_is_init(priv)) {
1997                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
1998                                         STATUS_RF_KILL_HW |
1999                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2000                                         STATUS_RF_KILL_SW |
2001                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2002                                         STATUS_GEO_CONFIGURED |
2003                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2004                                         STATUS_IN_SUSPEND |
2005                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2006                                         STATUS_EXIT_PENDING;
2007                 goto exit;
2008         }
2009
2010         /* ...otherwise clear out all the status bits but the RF Kill and
2011          * SUSPEND bits and continue taking the NIC down. */
2012         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2013                                 STATUS_RF_KILL_HW |
2014                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2015                                 STATUS_RF_KILL_SW |
2016                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2017                                 STATUS_GEO_CONFIGURED |
2018                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2019                                 STATUS_IN_SUSPEND |
2020                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2021                                 STATUS_FW_ERROR |
2022                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2023                                 STATUS_EXIT_PENDING;
2024
2025         spin_lock_irqsave(&priv->lock, flags);
2026         iwl_clear_bit(priv, CSR_GP_CNTRL,
2027                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2028         spin_unlock_irqrestore(&priv->lock, flags);
2029
2030         iwl_txq_ctx_stop(priv);
2031         iwl_rxq_stop(priv);
2032
2033         spin_lock_irqsave(&priv->lock, flags);
2034         if (!iwl_grab_nic_access(priv)) {
2035                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2036                                          APMG_CLK_VAL_DMA_CLK_RQT);
2037                 iwl_release_nic_access(priv);
2038         }
2039         spin_unlock_irqrestore(&priv->lock, flags);
2040
2041         udelay(5);
2042
2043         /* FIXME: apm_ops.suspend(priv) */
2044         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2045                 priv->cfg->ops->lib->apm_ops.stop(priv);
2046         else
2047                 priv->cfg->ops->lib->apm_ops.reset(priv);
2048  exit:
2049         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2050
2051         if (priv->ibss_beacon)
2052                 dev_kfree_skb(priv->ibss_beacon);
2053         priv->ibss_beacon = NULL;
2054
2055         /* clear out any free frames */
2056         iwl_clear_free_frames(priv);
2057 }
2058
2059 static void iwl_down(struct iwl_priv *priv)
2060 {
2061         mutex_lock(&priv->mutex);
2062         __iwl_down(priv);
2063         mutex_unlock(&priv->mutex);
2064
2065         iwl_cancel_deferred_work(priv);
2066 }
2067
2068 #define MAX_HW_RESTARTS 5
2069
2070 static int __iwl_up(struct iwl_priv *priv)
2071 {
2072         int i;
2073         int ret;
2074
2075         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2076                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2077                 return -EIO;
2078         }
2079
2080         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2081                 IWL_ERROR("ucode not available for device bringup\n");
2082                 return -EIO;
2083         }
2084
2085         /* If platform's RF_KILL switch is NOT set to KILL */
2086         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2087                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2088         else
2089                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2090
2091         if (iwl_is_rfkill(priv)) {
2092                 iwl_enable_interrupts(priv);
2093                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2094                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2095                 return 0;
2096         }
2097
2098         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2099
2100         ret = iwl_hw_nic_init(priv);
2101         if (ret) {
2102                 IWL_ERROR("Unable to init nic\n");
2103                 return ret;
2104         }
2105
2106         /* make sure rfkill handshake bits are cleared */
2107         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2108         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2109                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2110
2111         /* clear (again), then enable host interrupts */
2112         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2113         iwl_enable_interrupts(priv);
2114
2115         /* really make sure rfkill handshake bits are cleared */
2116         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2117         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2118
2119         /* Copy original ucode data image from disk into backup cache.
2120          * This will be used to initialize the on-board processor's
2121          * data SRAM for a clean start when the runtime program first loads. */
2122         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2123                priv->ucode_data.len);
2124
2125         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2126
2127                 iwl_clear_stations_table(priv);
2128
2129                 /* load bootstrap state machine,
2130                  * load bootstrap program into processor's memory,
2131                  * prepare to load the "initialize" uCode */
2132                 ret = priv->cfg->ops->lib->load_ucode(priv);
2133
2134                 if (ret) {
2135                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2136                         continue;
2137                 }
2138
2139                 /* Clear out the uCode error bit if it is set */
2140                 clear_bit(STATUS_FW_ERROR, &priv->status);
2141
2142                 /* start card; "initialize" will load runtime ucode */
2143                 iwl_nic_start(priv);
2144
2145                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2146
2147                 return 0;
2148         }
2149
2150         set_bit(STATUS_EXIT_PENDING, &priv->status);
2151         __iwl_down(priv);
2152         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2153
2154         /* tried to restart and config the device for as long as our
2155          * patience could withstand */
2156         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2157         return -EIO;
2158 }
2159
2160
2161 /*****************************************************************************
2162  *
2163  * Workqueue callbacks
2164  *
2165  *****************************************************************************/
2166
2167 static void iwl_bg_init_alive_start(struct work_struct *data)
2168 {
2169         struct iwl_priv *priv =
2170             container_of(data, struct iwl_priv, init_alive_start.work);
2171
2172         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2173                 return;
2174
2175         mutex_lock(&priv->mutex);
2176         priv->cfg->ops->lib->init_alive_start(priv);
2177         mutex_unlock(&priv->mutex);
2178 }
2179
2180 static void iwl_bg_alive_start(struct work_struct *data)
2181 {
2182         struct iwl_priv *priv =
2183             container_of(data, struct iwl_priv, alive_start.work);
2184
2185         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2186                 return;
2187
2188         mutex_lock(&priv->mutex);
2189         iwl_alive_start(priv);
2190         mutex_unlock(&priv->mutex);
2191 }
2192
2193 static void iwl_bg_rf_kill(struct work_struct *work)
2194 {
2195         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2196
2197         wake_up_interruptible(&priv->wait_command_queue);
2198
2199         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2200                 return;
2201
2202         mutex_lock(&priv->mutex);
2203
2204         if (!iwl_is_rfkill(priv)) {
2205                 IWL_DEBUG(IWL_DL_RF_KILL,
2206                           "HW and/or SW RF Kill no longer active, restarting "
2207                           "device\n");
2208                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2209                         queue_work(priv->workqueue, &priv->restart);
2210         } else {
2211                 /* make sure mac80211 stop sending Tx frame */
2212                 if (priv->mac80211_registered)
2213                         ieee80211_stop_queues(priv->hw);
2214
2215                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2216                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2217                                           "disabled by SW switch\n");
2218                 else
2219                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2220                                     "Kill switch must be turned off for "
2221                                     "wireless networking to work.\n");
2222         }
2223         mutex_unlock(&priv->mutex);
2224         iwl_rfkill_set_hw_state(priv);
2225 }
2226
2227 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2228 {
2229         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2230                         run_time_calib_work);
2231
2232         mutex_lock(&priv->mutex);
2233
2234         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2235             test_bit(STATUS_SCANNING, &priv->status)) {
2236                 mutex_unlock(&priv->mutex);
2237                 return;
2238         }
2239
2240         if (priv->start_calib) {
2241                 iwl_chain_noise_calibration(priv, &priv->statistics);
2242
2243                 iwl_sensitivity_calibration(priv, &priv->statistics);
2244         }
2245
2246         mutex_unlock(&priv->mutex);
2247         return;
2248 }
2249
2250 static void iwl_bg_up(struct work_struct *data)
2251 {
2252         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2253
2254         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2255                 return;
2256
2257         mutex_lock(&priv->mutex);
2258         __iwl_up(priv);
2259         mutex_unlock(&priv->mutex);
2260         iwl_rfkill_set_hw_state(priv);
2261 }
2262
2263 static void iwl_bg_restart(struct work_struct *data)
2264 {
2265         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2266
2267         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2268                 return;
2269
2270         iwl_down(priv);
2271         queue_work(priv->workqueue, &priv->up);
2272 }
2273
2274 static void iwl_bg_rx_replenish(struct work_struct *data)
2275 {
2276         struct iwl_priv *priv =
2277             container_of(data, struct iwl_priv, rx_replenish);
2278
2279         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2280                 return;
2281
2282         mutex_lock(&priv->mutex);
2283         iwl_rx_replenish(priv);
2284         mutex_unlock(&priv->mutex);
2285 }
2286
2287 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2288
2289 static void iwl_post_associate(struct iwl_priv *priv)
2290 {
2291         struct ieee80211_conf *conf = NULL;
2292         int ret = 0;
2293         unsigned long flags;
2294
2295         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2296                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2297                 return;
2298         }
2299
2300         IWL_DEBUG_ASSOC("Associated as %d to: %pM\n",
2301                         priv->assoc_id, priv->active_rxon.bssid_addr);
2302
2303
2304         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2305                 return;
2306
2307
2308         if (!priv->vif || !priv->is_open)
2309                 return;
2310
2311         iwl_power_cancel_timeout(priv);
2312         iwl_scan_cancel_timeout(priv, 200);
2313
2314         conf = ieee80211_get_hw_conf(priv->hw);
2315
2316         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2317         iwl_commit_rxon(priv);
2318
2319         iwl_setup_rxon_timing(priv);
2320         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2321                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2322         if (ret)
2323                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2324                             "Attempting to continue.\n");
2325
2326         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2327
2328         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2329
2330         iwl_set_rxon_chain(priv);
2331         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2332
2333         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2334                         priv->assoc_id, priv->beacon_int);
2335
2336         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2337                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2338         else
2339                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2340
2341         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2342                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2343                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2344                 else
2345                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2346
2347                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2348                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2349
2350         }
2351
2352         iwl_commit_rxon(priv);
2353
2354         switch (priv->iw_mode) {
2355         case NL80211_IFTYPE_STATION:
2356                 break;
2357
2358         case NL80211_IFTYPE_ADHOC:
2359
2360                 /* assume default assoc id */
2361                 priv->assoc_id = 1;
2362
2363                 iwl_rxon_add_station(priv, priv->bssid, 0);
2364                 iwl_send_beacon_cmd(priv);
2365
2366                 break;
2367
2368         default:
2369                 IWL_ERROR("%s Should not be called in %d mode\n",
2370                           __func__, priv->iw_mode);
2371                 break;
2372         }
2373
2374         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2375                 priv->assoc_station_added = 1;
2376
2377         spin_lock_irqsave(&priv->lock, flags);
2378         iwl_activate_qos(priv, 0);
2379         spin_unlock_irqrestore(&priv->lock, flags);
2380
2381         /* the chain noise calibration will enabled PM upon completion
2382          * If chain noise has already been run, then we need to enable
2383          * power management here */
2384         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2385                 iwl_power_enable_management(priv);
2386
2387         /* Enable Rx differential gain and sensitivity calibrations */
2388         iwl_chain_noise_reset(priv);
2389         priv->start_calib = 1;
2390
2391 }
2392
2393 /*****************************************************************************
2394  *
2395  * mac80211 entry point functions
2396  *
2397  *****************************************************************************/
2398
2399 #define UCODE_READY_TIMEOUT     (4 * HZ)
2400
2401 static int iwl_mac_start(struct ieee80211_hw *hw)
2402 {
2403         struct iwl_priv *priv = hw->priv;
2404         int ret;
2405         u16 pci_cmd;
2406
2407         IWL_DEBUG_MAC80211("enter\n");
2408
2409         if (pci_enable_device(priv->pci_dev)) {
2410                 IWL_ERROR("Fail to pci_enable_device\n");
2411                 return -ENODEV;
2412         }
2413         pci_restore_state(priv->pci_dev);
2414         pci_enable_msi(priv->pci_dev);
2415
2416         /* enable interrupts if needed: hw bug w/a */
2417         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2418         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2419                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2420                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2421         }
2422
2423         ret = request_irq(priv->pci_dev->irq, iwl_isr, IRQF_SHARED,
2424                           DRV_NAME, priv);
2425         if (ret) {
2426                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2427                 goto out_disable_msi;
2428         }
2429
2430         /* we should be verifying the device is ready to be opened */
2431         mutex_lock(&priv->mutex);
2432
2433         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2434         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2435          * ucode filename and max sizes are card-specific. */
2436
2437         if (!priv->ucode_code.len) {
2438                 ret = iwl_read_ucode(priv);
2439                 if (ret) {
2440                         IWL_ERROR("Could not read microcode: %d\n", ret);
2441                         mutex_unlock(&priv->mutex);
2442                         goto out_release_irq;
2443                 }
2444         }
2445
2446         ret = __iwl_up(priv);
2447
2448         mutex_unlock(&priv->mutex);
2449
2450         iwl_rfkill_set_hw_state(priv);
2451
2452         if (ret)
2453                 goto out_release_irq;
2454
2455         if (iwl_is_rfkill(priv))
2456                 goto out;
2457
2458         IWL_DEBUG_INFO("Start UP work done.\n");
2459
2460         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2461                 return 0;
2462
2463         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2464          * mac80211 will not be run successfully. */
2465         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2466                         test_bit(STATUS_READY, &priv->status),
2467                         UCODE_READY_TIMEOUT);
2468         if (!ret) {
2469                 if (!test_bit(STATUS_READY, &priv->status)) {
2470                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2471                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2472                         ret = -ETIMEDOUT;
2473                         goto out_release_irq;
2474                 }
2475         }
2476
2477 out:
2478         priv->is_open = 1;
2479         IWL_DEBUG_MAC80211("leave\n");
2480         return 0;
2481
2482 out_release_irq:
2483         free_irq(priv->pci_dev->irq, priv);
2484 out_disable_msi:
2485         pci_disable_msi(priv->pci_dev);
2486         pci_disable_device(priv->pci_dev);
2487         priv->is_open = 0;
2488         IWL_DEBUG_MAC80211("leave - failed\n");
2489         return ret;
2490 }
2491
2492 static void iwl_mac_stop(struct ieee80211_hw *hw)
2493 {
2494         struct iwl_priv *priv = hw->priv;
2495
2496         IWL_DEBUG_MAC80211("enter\n");
2497
2498         if (!priv->is_open) {
2499                 IWL_DEBUG_MAC80211("leave - skip\n");
2500                 return;
2501         }
2502
2503         priv->is_open = 0;
2504
2505         if (iwl_is_ready_rf(priv)) {
2506                 /* stop mac, cancel any scan request and clear
2507                  * RXON_FILTER_ASSOC_MSK BIT
2508                  */
2509                 mutex_lock(&priv->mutex);
2510                 iwl_scan_cancel_timeout(priv, 100);
2511                 mutex_unlock(&priv->mutex);
2512         }
2513
2514         iwl_down(priv);
2515
2516         flush_workqueue(priv->workqueue);
2517         free_irq(priv->pci_dev->irq, priv);
2518         pci_disable_msi(priv->pci_dev);
2519         pci_save_state(priv->pci_dev);
2520         pci_disable_device(priv->pci_dev);
2521
2522         IWL_DEBUG_MAC80211("leave\n");
2523 }
2524
2525 static int iwl_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2526 {
2527         struct iwl_priv *priv = hw->priv;
2528
2529         IWL_DEBUG_MACDUMP("enter\n");
2530
2531         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2532                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2533
2534         if (iwl_tx_skb(priv, skb))
2535                 dev_kfree_skb_any(skb);
2536
2537         IWL_DEBUG_MACDUMP("leave\n");
2538         return 0;
2539 }
2540
2541 static int iwl_mac_add_interface(struct ieee80211_hw *hw,
2542                                  struct ieee80211_if_init_conf *conf)
2543 {
2544         struct iwl_priv *priv = hw->priv;
2545         unsigned long flags;
2546
2547         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2548
2549         if (priv->vif) {
2550                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2551                 return -EOPNOTSUPP;
2552         }
2553
2554         spin_lock_irqsave(&priv->lock, flags);
2555         priv->vif = conf->vif;
2556         priv->iw_mode = conf->type;
2557
2558         spin_unlock_irqrestore(&priv->lock, flags);
2559
2560         mutex_lock(&priv->mutex);
2561
2562         if (conf->mac_addr) {
2563                 IWL_DEBUG_MAC80211("Set %pM\n", conf->mac_addr);
2564                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2565         }
2566
2567         if (iwl_set_mode(priv, conf->type) == -EAGAIN)
2568                 /* we are not ready, will run again when ready */
2569                 set_bit(STATUS_MODE_PENDING, &priv->status);
2570
2571         mutex_unlock(&priv->mutex);
2572
2573         IWL_DEBUG_MAC80211("leave\n");
2574         return 0;
2575 }
2576
2577 /**
2578  * iwl_mac_config - mac80211 config callback
2579  *
2580  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2581  * be set inappropriately and the driver currently sets the hardware up to
2582  * use it whenever needed.
2583  */
2584 static int iwl_mac_config(struct ieee80211_hw *hw, u32 changed)
2585 {
2586         struct iwl_priv *priv = hw->priv;
2587         const struct iwl_channel_info *ch_info;
2588         struct ieee80211_conf *conf = &hw->conf;
2589         unsigned long flags;
2590         int ret = 0;
2591         u16 channel;
2592
2593         mutex_lock(&priv->mutex);
2594         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2595
2596         priv->current_ht_config.is_ht = conf->ht.enabled;
2597
2598         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2599                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2600                 goto out;
2601         }
2602
2603         if (!conf->radio_enabled)
2604                 iwl_radio_kill_sw_disable_radio(priv);
2605
2606         if (!iwl_is_ready(priv)) {
2607                 IWL_DEBUG_MAC80211("leave - not ready\n");
2608                 ret = -EIO;
2609                 goto out;
2610         }
2611
2612         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2613                      test_bit(STATUS_SCANNING, &priv->status))) {
2614                 IWL_DEBUG_MAC80211("leave - scanning\n");
2615                 mutex_unlock(&priv->mutex);
2616                 return 0;
2617         }
2618
2619         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2620         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2621         if (!is_channel_valid(ch_info)) {
2622                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2623                 ret = -EINVAL;
2624                 goto out;
2625         }
2626
2627         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2628             !is_channel_ibss(ch_info)) {
2629                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2630                         conf->channel->hw_value, conf->channel->band);
2631                 ret = -EINVAL;
2632                 goto out;
2633         }
2634
2635         spin_lock_irqsave(&priv->lock, flags);
2636
2637
2638         /* if we are switching from ht to 2.4 clear flags
2639          * from any ht related info since 2.4 does not
2640          * support ht */
2641         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2642 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2643             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2644 #endif
2645         )
2646                 priv->staging_rxon.flags = 0;
2647
2648         iwl_set_rxon_channel(priv, conf->channel);
2649
2650         iwl_set_flags_for_band(priv, conf->channel->band);
2651
2652         /* The list of supported rates and rate mask can be different
2653          * for each band; since the band may have changed, reset
2654          * the rate mask to what mac80211 lists */
2655         iwl_set_rate(priv);
2656
2657         spin_unlock_irqrestore(&priv->lock, flags);
2658
2659 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2660         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2661                 iwl_hw_channel_switch(priv, conf->channel);
2662                 goto out;
2663         }
2664 #endif
2665
2666         if (!conf->radio_enabled) {
2667                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2668                 goto out;
2669         }
2670
2671         if (iwl_is_rfkill(priv)) {
2672                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2673                 ret = -EIO;
2674                 goto out;
2675         }
2676
2677         if (conf->flags & IEEE80211_CONF_PS)
2678                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2679         else
2680                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2681         if (ret)
2682                 IWL_DEBUG_MAC80211("Error setting power level\n");
2683
2684         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2685                            priv->tx_power_user_lmt, conf->power_level);
2686
2687         iwl_set_tx_power(priv, conf->power_level, false);
2688
2689         iwl_set_rate(priv);
2690
2691         if (memcmp(&priv->active_rxon,
2692                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2693                 iwl_commit_rxon(priv);
2694         else
2695                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2696
2697         IWL_DEBUG_MAC80211("leave\n");
2698
2699 out:
2700         mutex_unlock(&priv->mutex);
2701         return ret;
2702 }
2703
2704 static void iwl_config_ap(struct iwl_priv *priv)
2705 {
2706         int ret = 0;
2707         unsigned long flags;
2708
2709         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2710                 return;
2711
2712         /* The following should be done only at AP bring up */
2713         if (!iwl_is_associated(priv)) {
2714
2715                 /* RXON - unassoc (to set timing command) */
2716                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2717                 iwl_commit_rxon(priv);
2718
2719                 /* RXON Timing */
2720                 iwl_setup_rxon_timing(priv);
2721                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2722                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2723                 if (ret)
2724                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2725                                         "Attempting to continue.\n");
2726
2727                 iwl_set_rxon_chain(priv);
2728
2729                 /* FIXME: what should be the assoc_id for AP? */
2730                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2731                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2732                         priv->staging_rxon.flags |=
2733                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2734                 else
2735                         priv->staging_rxon.flags &=
2736                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2737
2738                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2739                         if (priv->assoc_capability &
2740                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2741                                 priv->staging_rxon.flags |=
2742                                         RXON_FLG_SHORT_SLOT_MSK;
2743                         else
2744                                 priv->staging_rxon.flags &=
2745                                         ~RXON_FLG_SHORT_SLOT_MSK;
2746
2747                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2748                                 priv->staging_rxon.flags &=
2749                                         ~RXON_FLG_SHORT_SLOT_MSK;
2750                 }
2751                 /* restore RXON assoc */
2752                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2753                 iwl_commit_rxon(priv);
2754                 spin_lock_irqsave(&priv->lock, flags);
2755                 iwl_activate_qos(priv, 1);
2756                 spin_unlock_irqrestore(&priv->lock, flags);
2757                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2758         }
2759         iwl_send_beacon_cmd(priv);
2760
2761         /* FIXME - we need to add code here to detect a totally new
2762          * configuration, reset the AP, unassoc, rxon timing, assoc,
2763          * clear sta table, add BCAST sta... */
2764 }
2765
2766
2767 static int iwl_mac_config_interface(struct ieee80211_hw *hw,
2768                                         struct ieee80211_vif *vif,
2769                                     struct ieee80211_if_conf *conf)
2770 {
2771         struct iwl_priv *priv = hw->priv;
2772         int rc;
2773
2774         if (conf == NULL)
2775                 return -EIO;
2776
2777         if (priv->vif != vif) {
2778                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2779                 return 0;
2780         }
2781
2782         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2783             conf->changed & IEEE80211_IFCC_BEACON) {
2784                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2785                 if (!beacon)
2786                         return -ENOMEM;
2787                 mutex_lock(&priv->mutex);
2788                 rc = iwl_mac_beacon_update(hw, beacon);
2789                 mutex_unlock(&priv->mutex);
2790                 if (rc)
2791                         return rc;
2792         }
2793
2794         if (!iwl_is_alive(priv))
2795                 return -EAGAIN;
2796
2797         mutex_lock(&priv->mutex);
2798
2799         if (conf->bssid)
2800                 IWL_DEBUG_MAC80211("bssid: %pM\n", conf->bssid);
2801
2802 /*
2803  * very dubious code was here; the probe filtering flag is never set:
2804  *
2805         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2806             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2807  */
2808
2809         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2810                 if (!conf->bssid) {
2811                         conf->bssid = priv->mac_addr;
2812                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2813                         IWL_DEBUG_MAC80211("bssid was set to: %pM\n",
2814                                            conf->bssid);
2815                 }
2816                 if (priv->ibss_beacon)
2817                         dev_kfree_skb(priv->ibss_beacon);
2818
2819                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2820         }
2821
2822         if (iwl_is_rfkill(priv))
2823                 goto done;
2824
2825         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2826             !is_multicast_ether_addr(conf->bssid)) {
2827                 /* If there is currently a HW scan going on in the background
2828                  * then we need to cancel it else the RXON below will fail. */
2829                 if (iwl_scan_cancel_timeout(priv, 100)) {
2830                         IWL_WARNING("Aborted scan still in progress "
2831                                     "after 100ms\n");
2832                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2833                         mutex_unlock(&priv->mutex);
2834                         return -EAGAIN;
2835                 }
2836                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2837
2838                 /* TODO: Audit driver for usage of these members and see
2839                  * if mac80211 deprecates them (priv->bssid looks like it
2840                  * shouldn't be there, but I haven't scanned the IBSS code
2841                  * to verify) - jpk */
2842                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2843
2844                 if (priv->iw_mode == NL80211_IFTYPE_AP)
2845                         iwl_config_ap(priv);
2846                 else {
2847                         rc = iwl_commit_rxon(priv);
2848                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
2849                                 iwl_rxon_add_station(
2850                                         priv, priv->active_rxon.bssid_addr, 1);
2851                 }
2852
2853         } else {
2854                 iwl_scan_cancel_timeout(priv, 100);
2855                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2856                 iwl_commit_rxon(priv);
2857         }
2858
2859  done:
2860         IWL_DEBUG_MAC80211("leave\n");
2861         mutex_unlock(&priv->mutex);
2862
2863         return 0;
2864 }
2865
2866 static void iwl_configure_filter(struct ieee80211_hw *hw,
2867                                  unsigned int changed_flags,
2868                                  unsigned int *total_flags,
2869                                  int mc_count, struct dev_addr_list *mc_list)
2870 {
2871         struct iwl_priv *priv = hw->priv;
2872         __le32 *filter_flags = &priv->staging_rxon.filter_flags;
2873
2874         IWL_DEBUG_MAC80211("Enter: changed: 0x%x, total: 0x%x\n",
2875                         changed_flags, *total_flags);
2876
2877         if (changed_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS)) {
2878                 if (*total_flags & (FIF_OTHER_BSS | FIF_PROMISC_IN_BSS))
2879                         *filter_flags |= RXON_FILTER_PROMISC_MSK;
2880                 else
2881                         *filter_flags &= ~RXON_FILTER_PROMISC_MSK;
2882         }
2883         if (changed_flags & FIF_ALLMULTI) {
2884                 if (*total_flags & FIF_ALLMULTI)
2885                         *filter_flags |= RXON_FILTER_ACCEPT_GRP_MSK;
2886                 else
2887                         *filter_flags &= ~RXON_FILTER_ACCEPT_GRP_MSK;
2888         }
2889         if (changed_flags & FIF_CONTROL) {
2890                 if (*total_flags & FIF_CONTROL)
2891                         *filter_flags |= RXON_FILTER_CTL2HOST_MSK;
2892                 else
2893                         *filter_flags &= ~RXON_FILTER_CTL2HOST_MSK;
2894         }
2895         if (changed_flags & FIF_BCN_PRBRESP_PROMISC) {
2896                 if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
2897                         *filter_flags |= RXON_FILTER_BCON_AWARE_MSK;
2898                 else
2899                         *filter_flags &= ~RXON_FILTER_BCON_AWARE_MSK;
2900         }
2901
2902         /* We avoid iwl_commit_rxon here to commit the new filter flags
2903          * since mac80211 will call ieee80211_hw_config immediately.
2904          * (mc_list is not supported at this time). Otherwise, we need to
2905          * queue a background iwl_commit_rxon work.
2906          */
2907
2908         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
2909                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
2910 }
2911
2912 static void iwl_mac_remove_interface(struct ieee80211_hw *hw,
2913                                      struct ieee80211_if_init_conf *conf)
2914 {
2915         struct iwl_priv *priv = hw->priv;
2916
2917         IWL_DEBUG_MAC80211("enter\n");
2918
2919         mutex_lock(&priv->mutex);
2920
2921         if (iwl_is_ready_rf(priv)) {
2922                 iwl_scan_cancel_timeout(priv, 100);
2923                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2924                 iwl_commit_rxon(priv);
2925         }
2926         if (priv->vif == conf->vif) {
2927                 priv->vif = NULL;
2928                 memset(priv->bssid, 0, ETH_ALEN);
2929         }
2930         mutex_unlock(&priv->mutex);
2931
2932         IWL_DEBUG_MAC80211("leave\n");
2933
2934 }
2935
2936 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
2937 static void iwl_bss_info_changed(struct ieee80211_hw *hw,
2938                                      struct ieee80211_vif *vif,
2939                                      struct ieee80211_bss_conf *bss_conf,
2940                                      u32 changes)
2941 {
2942         struct iwl_priv *priv = hw->priv;
2943
2944         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
2945
2946         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
2947                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
2948                                    bss_conf->use_short_preamble);
2949                 if (bss_conf->use_short_preamble)
2950                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2951                 else
2952                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2953         }
2954
2955         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
2956                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
2957                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
2958                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
2959                 else
2960                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
2961         }
2962
2963         if (changes & BSS_CHANGED_HT) {
2964                 iwl_ht_conf(priv, bss_conf);
2965                 iwl_set_rxon_chain(priv);
2966         }
2967
2968         if (changes & BSS_CHANGED_ASSOC) {
2969                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
2970                 /* This should never happen as this function should
2971                  * never be called from interrupt context. */
2972                 if (WARN_ON_ONCE(in_interrupt()))
2973                         return;
2974                 if (bss_conf->assoc) {
2975                         priv->assoc_id = bss_conf->aid;
2976                         priv->beacon_int = bss_conf->beacon_int;
2977                         priv->power_data.dtim_period = bss_conf->dtim_period;
2978                         priv->timestamp = bss_conf->timestamp;
2979                         priv->assoc_capability = bss_conf->assoc_capability;
2980
2981                         /* we have just associated, don't start scan too early
2982                          * leave time for EAPOL exchange to complete
2983                          */
2984                         priv->next_scan_jiffies = jiffies +
2985                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
2986                         mutex_lock(&priv->mutex);
2987                         iwl_post_associate(priv);
2988                         mutex_unlock(&priv->mutex);
2989                 } else {
2990                         priv->assoc_id = 0;
2991                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
2992                 }
2993         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
2994                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
2995                         iwl_send_rxon_assoc(priv);
2996         }
2997
2998 }
2999
3000 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3001 {
3002         unsigned long flags;
3003         struct iwl_priv *priv = hw->priv;
3004         int ret;
3005
3006         IWL_DEBUG_MAC80211("enter\n");
3007
3008         mutex_lock(&priv->mutex);
3009         spin_lock_irqsave(&priv->lock, flags);
3010
3011         if (!iwl_is_ready_rf(priv)) {
3012                 ret = -EIO;
3013                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3014                 goto out_unlock;
3015         }
3016
3017         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3018                 ret = -EIO;
3019                 IWL_ERROR("ERROR: APs don't scan\n");
3020                 goto out_unlock;
3021         }
3022
3023         /* We don't schedule scan within next_scan_jiffies period.
3024          * Avoid scanning during possible EAPOL exchange, return
3025          * success immediately.
3026          */
3027         if (priv->next_scan_jiffies &&
3028             time_after(priv->next_scan_jiffies, jiffies)) {
3029                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3030                 queue_work(priv->workqueue, &priv->scan_completed);
3031                 ret = 0;
3032                 goto out_unlock;
3033         }
3034
3035         /* if we just finished scan ask for delay */
3036         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3037             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3038                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3039                 queue_work(priv->workqueue, &priv->scan_completed);
3040                 ret = 0;
3041                 goto out_unlock;
3042         }
3043
3044         if (ssid_len) {
3045                 priv->one_direct_scan = 1;
3046                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3047                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3048         } else {
3049                 priv->one_direct_scan = 0;
3050         }
3051
3052         ret = iwl_scan_initiate(priv);
3053
3054         IWL_DEBUG_MAC80211("leave\n");
3055
3056 out_unlock:
3057         spin_unlock_irqrestore(&priv->lock, flags);
3058         mutex_unlock(&priv->mutex);
3059
3060         return ret;
3061 }
3062
3063 static void iwl_mac_update_tkip_key(struct ieee80211_hw *hw,
3064                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3065                         u32 iv32, u16 *phase1key)
3066 {
3067
3068         struct iwl_priv *priv = hw->priv;
3069         IWL_DEBUG_MAC80211("enter\n");
3070
3071         iwl_update_tkip_key(priv, keyconf, addr, iv32, phase1key);
3072
3073         IWL_DEBUG_MAC80211("leave\n");
3074 }
3075
3076 static int iwl_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3077                            const u8 *local_addr, const u8 *addr,
3078                            struct ieee80211_key_conf *key)
3079 {
3080         struct iwl_priv *priv = hw->priv;
3081         int ret = 0;
3082         u8 sta_id = IWL_INVALID_STATION;
3083         u8 is_default_wep_key = 0;
3084
3085         IWL_DEBUG_MAC80211("enter\n");
3086
3087         if (priv->hw_params.sw_crypto) {
3088                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3089                 return -EOPNOTSUPP;
3090         }
3091
3092         if (is_zero_ether_addr(addr))
3093                 /* only support pairwise keys */
3094                 return -EOPNOTSUPP;
3095
3096         sta_id = iwl_find_station(priv, addr);
3097         if (sta_id == IWL_INVALID_STATION) {
3098                 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
3099                                    addr);
3100                 return -EINVAL;
3101
3102         }
3103
3104         mutex_lock(&priv->mutex);
3105         iwl_scan_cancel_timeout(priv, 100);
3106         mutex_unlock(&priv->mutex);
3107
3108         /* If we are getting WEP group key and we didn't receive any key mapping
3109          * so far, we are in legacy wep mode (group key only), otherwise we are
3110          * in 1X mode.
3111          * In legacy wep mode, we use another host command to the uCode */
3112         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3113                 priv->iw_mode != NL80211_IFTYPE_AP) {
3114                 if (cmd == SET_KEY)
3115                         is_default_wep_key = !priv->key_mapping_key;
3116                 else
3117                         is_default_wep_key =
3118                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3119         }
3120
3121         switch (cmd) {
3122         case SET_KEY:
3123                 if (is_default_wep_key)
3124                         ret = iwl_set_default_wep_key(priv, key);
3125                 else
3126                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3127
3128                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3129                 break;
3130         case DISABLE_KEY:
3131                 if (is_default_wep_key)
3132                         ret = iwl_remove_default_wep_key(priv, key);
3133                 else
3134                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3135
3136                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3137                 break;
3138         default:
3139                 ret = -EINVAL;
3140         }
3141
3142         IWL_DEBUG_MAC80211("leave\n");
3143
3144         return ret;
3145 }
3146
3147 static int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3148                            const struct ieee80211_tx_queue_params *params)
3149 {
3150         struct iwl_priv *priv = hw->priv;
3151         unsigned long flags;
3152         int q;
3153
3154         IWL_DEBUG_MAC80211("enter\n");
3155
3156         if (!iwl_is_ready_rf(priv)) {
3157                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3158                 return -EIO;
3159         }
3160
3161         if (queue >= AC_NUM) {
3162                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3163                 return 0;
3164         }
3165
3166         if (!priv->qos_data.qos_enable) {
3167                 priv->qos_data.qos_active = 0;
3168                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3169                 return 0;
3170         }
3171         q = AC_NUM - 1 - queue;
3172
3173         spin_lock_irqsave(&priv->lock, flags);
3174
3175         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3176         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3177         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3178         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3179                         cpu_to_le16((params->txop * 32));
3180
3181         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3182         priv->qos_data.qos_active = 1;
3183
3184         if (priv->iw_mode == NL80211_IFTYPE_AP)
3185                 iwl_activate_qos(priv, 1);
3186         else if (priv->assoc_id && iwl_is_associated(priv))
3187                 iwl_activate_qos(priv, 0);
3188
3189         spin_unlock_irqrestore(&priv->lock, flags);
3190
3191         IWL_DEBUG_MAC80211("leave\n");
3192         return 0;
3193 }
3194
3195 static int iwl_mac_ampdu_action(struct ieee80211_hw *hw,
3196                              enum ieee80211_ampdu_mlme_action action,
3197                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3198 {
3199         struct iwl_priv *priv = hw->priv;
3200
3201         IWL_DEBUG_HT("A-MPDU action on addr %pM tid %d\n",
3202                      sta->addr, tid);
3203
3204         if (!(priv->cfg->sku & IWL_SKU_N))
3205                 return -EACCES;
3206
3207         switch (action) {
3208         case IEEE80211_AMPDU_RX_START:
3209                 IWL_DEBUG_HT("start Rx\n");
3210                 return iwl_sta_rx_agg_start(priv, sta->addr, tid, *ssn);
3211         case IEEE80211_AMPDU_RX_STOP:
3212                 IWL_DEBUG_HT("stop Rx\n");
3213                 return iwl_sta_rx_agg_stop(priv, sta->addr, tid);
3214         case IEEE80211_AMPDU_TX_START:
3215                 IWL_DEBUG_HT("start Tx\n");
3216                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3217         case IEEE80211_AMPDU_TX_STOP:
3218                 IWL_DEBUG_HT("stop Tx\n");
3219                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3220         default:
3221                 IWL_DEBUG_HT("unknown\n");
3222                 return -EINVAL;
3223                 break;
3224         }
3225         return 0;
3226 }
3227
3228 static int iwl_mac_get_tx_stats(struct ieee80211_hw *hw,
3229                                 struct ieee80211_tx_queue_stats *stats)
3230 {
3231         struct iwl_priv *priv = hw->priv;
3232         int i, avail;
3233         struct iwl_tx_queue *txq;
3234         struct iwl_queue *q;
3235         unsigned long flags;
3236
3237         IWL_DEBUG_MAC80211("enter\n");
3238
3239         if (!iwl_is_ready_rf(priv)) {
3240                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3241                 return -EIO;
3242         }
3243
3244         spin_lock_irqsave(&priv->lock, flags);
3245
3246         for (i = 0; i < AC_NUM; i++) {
3247                 txq = &priv->txq[i];
3248                 q = &txq->q;
3249                 avail = iwl_queue_space(q);
3250
3251                 stats[i].len = q->n_window - avail;
3252                 stats[i].limit = q->n_window - q->high_mark;
3253                 stats[i].count = q->n_window;
3254
3255         }
3256         spin_unlock_irqrestore(&priv->lock, flags);
3257
3258         IWL_DEBUG_MAC80211("leave\n");
3259
3260         return 0;
3261 }
3262
3263 static int iwl_mac_get_stats(struct ieee80211_hw *hw,
3264                              struct ieee80211_low_level_stats *stats)
3265 {
3266         struct iwl_priv *priv = hw->priv;
3267
3268         priv = hw->priv;
3269         IWL_DEBUG_MAC80211("enter\n");
3270         IWL_DEBUG_MAC80211("leave\n");
3271
3272         return 0;
3273 }
3274
3275 static void iwl_mac_reset_tsf(struct ieee80211_hw *hw)
3276 {
3277         struct iwl_priv *priv = hw->priv;
3278         unsigned long flags;
3279
3280         mutex_lock(&priv->mutex);
3281         IWL_DEBUG_MAC80211("enter\n");
3282
3283         spin_lock_irqsave(&priv->lock, flags);
3284         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3285         spin_unlock_irqrestore(&priv->lock, flags);
3286
3287         iwl_reset_qos(priv);
3288
3289         spin_lock_irqsave(&priv->lock, flags);
3290         priv->assoc_id = 0;
3291         priv->assoc_capability = 0;
3292         priv->assoc_station_added = 0;
3293
3294         /* new association get rid of ibss beacon skb */
3295         if (priv->ibss_beacon)
3296                 dev_kfree_skb(priv->ibss_beacon);
3297
3298         priv->ibss_beacon = NULL;
3299
3300         priv->beacon_int = priv->hw->conf.beacon_int;
3301         priv->timestamp = 0;
3302         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3303                 priv->beacon_int = 0;
3304
3305         spin_unlock_irqrestore(&priv->lock, flags);
3306
3307         if (!iwl_is_ready_rf(priv)) {
3308                 IWL_DEBUG_MAC80211("leave - not ready\n");
3309                 mutex_unlock(&priv->mutex);
3310                 return;
3311         }
3312
3313         /* we are restarting association process
3314          * clear RXON_FILTER_ASSOC_MSK bit
3315          */
3316         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3317                 iwl_scan_cancel_timeout(priv, 100);
3318                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3319                 iwl_commit_rxon(priv);
3320         }
3321
3322         iwl_power_update_mode(priv, 0);
3323
3324         /* Per mac80211.h: This is only used in IBSS mode... */
3325         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3326
3327                 /* switch to CAM during association period.
3328                  * the ucode will block any association/authentication
3329                  * frome during assiciation period if it can not hear
3330                  * the AP because of PM. the timer enable PM back is
3331                  * association do not complete
3332                  */
3333                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3334                                                      IEEE80211_CHAN_RADAR))
3335                                 iwl_power_disable_management(priv, 3000);
3336
3337                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3338                 mutex_unlock(&priv->mutex);
3339                 return;
3340         }
3341
3342         iwl_set_rate(priv);
3343
3344         mutex_unlock(&priv->mutex);
3345
3346         IWL_DEBUG_MAC80211("leave\n");
3347 }
3348
3349 static int iwl_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3350 {
3351         struct iwl_priv *priv = hw->priv;
3352         unsigned long flags;
3353         __le64 timestamp;
3354
3355         IWL_DEBUG_MAC80211("enter\n");
3356
3357         if (!iwl_is_ready_rf(priv)) {
3358                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3359                 return -EIO;
3360         }
3361
3362         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3363                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3364                 return -EIO;
3365         }
3366
3367         spin_lock_irqsave(&priv->lock, flags);
3368
3369         if (priv->ibss_beacon)
3370                 dev_kfree_skb(priv->ibss_beacon);
3371
3372         priv->ibss_beacon = skb;
3373
3374         priv->assoc_id = 0;
3375         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3376         priv->timestamp = le64_to_cpu(timestamp);
3377
3378         IWL_DEBUG_MAC80211("leave\n");
3379         spin_unlock_irqrestore(&priv->lock, flags);
3380
3381         iwl_reset_qos(priv);
3382
3383         iwl_post_associate(priv);
3384
3385
3386         return 0;
3387 }
3388
3389 /*****************************************************************************
3390  *
3391  * sysfs attributes
3392  *
3393  *****************************************************************************/
3394
3395 #ifdef CONFIG_IWLWIFI_DEBUG
3396
3397 /*
3398  * The following adds a new attribute to the sysfs representation
3399  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3400  * used for controlling the debug level.
3401  *
3402  * See the level definitions in iwl for details.
3403  */
3404
3405 static ssize_t show_debug_level(struct device *d,
3406                                 struct device_attribute *attr, char *buf)
3407 {
3408         struct iwl_priv *priv = d->driver_data;
3409
3410         return sprintf(buf, "0x%08X\n", priv->debug_level);
3411 }
3412 static ssize_t store_debug_level(struct device *d,
3413                                 struct device_attribute *attr,
3414                                  const char *buf, size_t count)
3415 {
3416         struct iwl_priv *priv = d->driver_data;
3417         unsigned long val;
3418         int ret;
3419
3420         ret = strict_strtoul(buf, 0, &val);
3421         if (ret)
3422                 printk(KERN_INFO DRV_NAME
3423                        ": %s is not in hex or decimal form.\n", buf);
3424         else
3425                 priv->debug_level = val;
3426
3427         return strnlen(buf, count);
3428 }
3429
3430 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3431                         show_debug_level, store_debug_level);
3432
3433
3434 #endif /* CONFIG_IWLWIFI_DEBUG */
3435
3436
3437 static ssize_t show_version(struct device *d,
3438                                 struct device_attribute *attr, char *buf)
3439 {
3440         struct iwl_priv *priv = d->driver_data;
3441         struct iwl_alive_resp *palive = &priv->card_alive;
3442         ssize_t pos = 0;
3443         u16 eeprom_ver;
3444
3445         if (palive->is_valid)
3446                 pos += sprintf(buf + pos,
3447                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3448                                 "fw type: 0x%01X 0x%01X\n",
3449                                 palive->ucode_major, palive->ucode_minor,
3450                                 palive->sw_rev[0], palive->sw_rev[1],
3451                                 palive->ver_type, palive->ver_subtype);
3452         else
3453                 pos += sprintf(buf + pos, "fw not loaded\n");
3454
3455         if (priv->eeprom) {
3456                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3457                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3458                                  eeprom_ver);
3459         } else {
3460                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3461         }
3462
3463         return pos;
3464 }
3465
3466 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3467
3468 static ssize_t show_temperature(struct device *d,
3469                                 struct device_attribute *attr, char *buf)
3470 {
3471         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3472
3473         if (!iwl_is_alive(priv))
3474                 return -EAGAIN;
3475
3476         return sprintf(buf, "%d\n", priv->temperature);
3477 }
3478
3479 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3480
3481 static ssize_t show_tx_power(struct device *d,
3482                              struct device_attribute *attr, char *buf)
3483 {
3484         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3485         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3486 }
3487
3488 static ssize_t store_tx_power(struct device *d,
3489                               struct device_attribute *attr,
3490                               const char *buf, size_t count)
3491 {
3492         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3493         unsigned long val;
3494         int ret;
3495
3496         ret = strict_strtoul(buf, 10, &val);
3497         if (ret)
3498                 printk(KERN_INFO DRV_NAME
3499                        ": %s is not in decimal form.\n", buf);
3500         else
3501                 iwl_set_tx_power(priv, val, false);
3502
3503         return count;
3504 }
3505
3506 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3507
3508 static ssize_t show_flags(struct device *d,
3509                           struct device_attribute *attr, char *buf)
3510 {
3511         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3512
3513         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3514 }
3515
3516 static ssize_t store_flags(struct device *d,
3517                            struct device_attribute *attr,
3518                            const char *buf, size_t count)
3519 {
3520         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3521         unsigned long val;
3522         u32 flags;
3523         int ret = strict_strtoul(buf, 0, &val);
3524         if (ret)
3525                 return ret;
3526         flags = (u32)val;
3527
3528         mutex_lock(&priv->mutex);
3529         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3530                 /* Cancel any currently running scans... */
3531                 if (iwl_scan_cancel_timeout(priv, 100))
3532                         IWL_WARNING("Could not cancel scan.\n");
3533                 else {
3534                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3535                         priv->staging_rxon.flags = cpu_to_le32(flags);
3536                         iwl_commit_rxon(priv);
3537                 }
3538         }
3539         mutex_unlock(&priv->mutex);
3540
3541         return count;
3542 }
3543
3544 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3545
3546 static ssize_t show_filter_flags(struct device *d,
3547                                  struct device_attribute *attr, char *buf)
3548 {
3549         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3550
3551         return sprintf(buf, "0x%04X\n",
3552                 le32_to_cpu(priv->active_rxon.filter_flags));
3553 }
3554
3555 static ssize_t store_filter_flags(struct device *d,
3556                                   struct device_attribute *attr,
3557                                   const char *buf, size_t count)
3558 {
3559         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3560         unsigned long val;
3561         u32 filter_flags;
3562         int ret = strict_strtoul(buf, 0, &val);
3563         if (ret)
3564                 return ret;
3565         filter_flags = (u32)val;
3566
3567         mutex_lock(&priv->mutex);
3568         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3569                 /* Cancel any currently running scans... */
3570                 if (iwl_scan_cancel_timeout(priv, 100))
3571                         IWL_WARNING("Could not cancel scan.\n");
3572                 else {
3573                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3574                                        "0x%04X\n", filter_flags);
3575                         priv->staging_rxon.filter_flags =
3576                                 cpu_to_le32(filter_flags);
3577                         iwl_commit_rxon(priv);
3578                 }
3579         }
3580         mutex_unlock(&priv->mutex);
3581
3582         return count;
3583 }
3584
3585 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3586                    store_filter_flags);
3587
3588 static ssize_t store_retry_rate(struct device *d,
3589                                 struct device_attribute *attr,
3590                                 const char *buf, size_t count)
3591 {
3592         struct iwl_priv *priv = dev_get_drvdata(d);
3593         long val;
3594         int ret  = strict_strtol(buf, 10, &val);
3595         if (!ret)
3596                 return ret;
3597
3598         priv->retry_rate = (val > 0) ? val : 1;
3599
3600         return count;
3601 }
3602
3603 static ssize_t show_retry_rate(struct device *d,
3604                                struct device_attribute *attr, char *buf)
3605 {
3606         struct iwl_priv *priv = dev_get_drvdata(d);
3607         return sprintf(buf, "%d", priv->retry_rate);
3608 }
3609
3610 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3611                    store_retry_rate);
3612
3613 static ssize_t store_power_level(struct device *d,
3614                                  struct device_attribute *attr,
3615                                  const char *buf, size_t count)
3616 {
3617         struct iwl_priv *priv = dev_get_drvdata(d);
3618         int ret;
3619         unsigned long mode;
3620
3621
3622         mutex_lock(&priv->mutex);
3623
3624         if (!iwl_is_ready(priv)) {
3625                 ret = -EAGAIN;
3626                 goto out;
3627         }
3628
3629         ret = strict_strtoul(buf, 10, &mode);
3630         if (ret)
3631                 goto out;
3632
3633         ret = iwl_power_set_user_mode(priv, mode);
3634         if (ret) {
3635                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3636                 goto out;
3637         }
3638         ret = count;
3639
3640  out:
3641         mutex_unlock(&priv->mutex);
3642         return ret;
3643 }
3644
3645 static ssize_t show_power_level(struct device *d,
3646                                 struct device_attribute *attr, char *buf)
3647 {
3648         struct iwl_priv *priv = dev_get_drvdata(d);
3649         int mode = priv->power_data.user_power_setting;
3650         int system = priv->power_data.system_power_setting;
3651         int level = priv->power_data.power_mode;
3652         char *p = buf;
3653
3654         switch (system) {
3655         case IWL_POWER_SYS_AUTO:
3656                 p += sprintf(p, "SYSTEM:auto");
3657                 break;
3658         case IWL_POWER_SYS_AC:
3659                 p += sprintf(p, "SYSTEM:ac");
3660                 break;
3661         case IWL_POWER_SYS_BATTERY:
3662                 p += sprintf(p, "SYSTEM:battery");
3663                 break;
3664         }
3665
3666         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO) ?
3667                         "fixed" : "auto");
3668         p += sprintf(p, "\tINDEX:%d", level);
3669         p += sprintf(p, "\n");
3670         return p - buf + 1;
3671 }
3672
3673 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3674                    store_power_level);
3675
3676 static ssize_t show_channels(struct device *d,
3677                              struct device_attribute *attr, char *buf)
3678 {
3679
3680         struct iwl_priv *priv = dev_get_drvdata(d);
3681         struct ieee80211_channel *channels = NULL;
3682         const struct ieee80211_supported_band *supp_band = NULL;
3683         int len = 0, i;
3684         int count = 0;
3685
3686         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3687                 return -EAGAIN;
3688
3689         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3690         channels = supp_band->channels;
3691         count = supp_band->n_channels;
3692
3693         len += sprintf(&buf[len],
3694                         "Displaying %d channels in 2.4GHz band "
3695                         "(802.11bg):\n", count);
3696
3697         for (i = 0; i < count; i++)
3698                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3699                                 ieee80211_frequency_to_channel(
3700                                 channels[i].center_freq),
3701                                 channels[i].max_power,
3702                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3703                                 " (IEEE 802.11h required)" : "",
3704                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3705                                 || (channels[i].flags &
3706                                 IEEE80211_CHAN_RADAR)) ? "" :
3707                                 ", IBSS",
3708                                 channels[i].flags &
3709                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3710                                 "passive only" : "active/passive");
3711
3712         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3713         channels = supp_band->channels;
3714         count = supp_band->n_channels;
3715
3716         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3717                         "(802.11a):\n", count);
3718
3719         for (i = 0; i < count; i++)
3720                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3721                                 ieee80211_frequency_to_channel(
3722                                 channels[i].center_freq),
3723                                 channels[i].max_power,
3724                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3725                                 " (IEEE 802.11h required)" : "",
3726                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3727                                 || (channels[i].flags &
3728                                 IEEE80211_CHAN_RADAR)) ? "" :
3729                                 ", IBSS",
3730                                 channels[i].flags &
3731                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3732                                 "passive only" : "active/passive");
3733
3734         return len;
3735 }
3736
3737 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3738
3739 static ssize_t show_statistics(struct device *d,
3740                                struct device_attribute *attr, char *buf)
3741 {
3742         struct iwl_priv *priv = dev_get_drvdata(d);
3743         u32 size = sizeof(struct iwl_notif_statistics);
3744         u32 len = 0, ofs = 0;
3745         u8 *data = (u8 *)&priv->statistics;
3746         int rc = 0;
3747
3748         if (!iwl_is_alive(priv))
3749                 return -EAGAIN;
3750
3751         mutex_lock(&priv->mutex);
3752         rc = iwl_send_statistics_request(priv, 0);
3753         mutex_unlock(&priv->mutex);
3754
3755         if (rc) {
3756                 len = sprintf(buf,
3757                               "Error sending statistics request: 0x%08X\n", rc);
3758                 return len;
3759         }
3760
3761         while (size && (PAGE_SIZE - len)) {
3762                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3763                                    PAGE_SIZE - len, 1);
3764                 len = strlen(buf);
3765                 if (PAGE_SIZE - len)
3766                         buf[len++] = '\n';
3767
3768                 ofs += 16;
3769                 size -= min(size, 16U);
3770         }
3771
3772         return len;
3773 }
3774
3775 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3776
3777 static ssize_t show_status(struct device *d,
3778                            struct device_attribute *attr, char *buf)
3779 {
3780         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3781         if (!iwl_is_alive(priv))
3782                 return -EAGAIN;
3783         return sprintf(buf, "0x%08x\n", (int)priv->status);
3784 }
3785
3786 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3787
3788 /*****************************************************************************
3789  *
3790  * driver setup and teardown
3791  *
3792  *****************************************************************************/
3793
3794 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3795 {
3796         priv->workqueue = create_workqueue(DRV_NAME);
3797
3798         init_waitqueue_head(&priv->wait_command_queue);
3799
3800         INIT_WORK(&priv->up, iwl_bg_up);
3801         INIT_WORK(&priv->restart, iwl_bg_restart);
3802         INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3803         INIT_WORK(&priv->rf_kill, iwl_bg_rf_kill);
3804         INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3805         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3806         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
3807         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
3808
3809         iwl_setup_scan_deferred_work(priv);
3810         iwl_setup_power_deferred_work(priv);
3811
3812         if (priv->cfg->ops->lib->setup_deferred_work)
3813                 priv->cfg->ops->lib->setup_deferred_work(priv);
3814
3815         init_timer(&priv->statistics_periodic);
3816         priv->statistics_periodic.data = (unsigned long)priv;
3817         priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3818
3819         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3820                      iwl_irq_tasklet, (unsigned long)priv);
3821 }
3822
3823 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3824 {
3825         if (priv->cfg->ops->lib->cancel_deferred_work)
3826                 priv->cfg->ops->lib->cancel_deferred_work(priv);
3827
3828         cancel_delayed_work_sync(&priv->init_alive_start);
3829         cancel_delayed_work(&priv->scan_check);
3830         cancel_delayed_work_sync(&priv->set_power_save);
3831         cancel_delayed_work(&priv->alive_start);
3832         cancel_work_sync(&priv->beacon_update);
3833         del_timer_sync(&priv->statistics_periodic);
3834 }
3835
3836 static struct attribute *iwl_sysfs_entries[] = {
3837         &dev_attr_channels.attr,
3838         &dev_attr_flags.attr,
3839         &dev_attr_filter_flags.attr,
3840         &dev_attr_power_level.attr,
3841         &dev_attr_retry_rate.attr,
3842         &dev_attr_statistics.attr,
3843         &dev_attr_status.attr,
3844         &dev_attr_temperature.attr,
3845         &dev_attr_tx_power.attr,
3846 #ifdef CONFIG_IWLWIFI_DEBUG
3847         &dev_attr_debug_level.attr,
3848 #endif
3849         &dev_attr_version.attr,
3850
3851         NULL
3852 };
3853
3854 static struct attribute_group iwl_attribute_group = {
3855         .name = NULL,           /* put in device directory */
3856         .attrs = iwl_sysfs_entries,
3857 };
3858
3859 static struct ieee80211_ops iwl_hw_ops = {
3860         .tx = iwl_mac_tx,
3861         .start = iwl_mac_start,
3862         .stop = iwl_mac_stop,
3863         .add_interface = iwl_mac_add_interface,
3864         .remove_interface = iwl_mac_remove_interface,
3865         .config = iwl_mac_config,
3866         .config_interface = iwl_mac_config_interface,
3867         .configure_filter = iwl_configure_filter,
3868         .set_key = iwl_mac_set_key,
3869         .update_tkip_key = iwl_mac_update_tkip_key,
3870         .get_stats = iwl_mac_get_stats,
3871         .get_tx_stats = iwl_mac_get_tx_stats,
3872         .conf_tx = iwl_mac_conf_tx,
3873         .reset_tsf = iwl_mac_reset_tsf,
3874         .bss_info_changed = iwl_bss_info_changed,
3875         .ampdu_action = iwl_mac_ampdu_action,
3876         .hw_scan = iwl_mac_hw_scan
3877 };
3878
3879 static int iwl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
3880 {
3881         int err = 0;
3882         struct iwl_priv *priv;
3883         struct ieee80211_hw *hw;
3884         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
3885         unsigned long flags;
3886
3887         /************************
3888          * 1. Allocating HW data
3889          ************************/
3890
3891         /* Disabling hardware scan means that mac80211 will perform scans
3892          * "the hard way", rather than using device's scan. */
3893         if (cfg->mod_params->disable_hw_scan) {
3894                 if (cfg->mod_params->debug & IWL_DL_INFO)
3895                         dev_printk(KERN_DEBUG, &(pdev->dev),
3896                                    "Disabling hw_scan\n");
3897                 iwl_hw_ops.hw_scan = NULL;
3898         }
3899
3900         hw = iwl_alloc_all(cfg, &iwl_hw_ops);
3901         if (!hw) {
3902                 err = -ENOMEM;
3903                 goto out;
3904         }
3905         priv = hw->priv;
3906         /* At this point both hw and priv are allocated. */
3907
3908         SET_IEEE80211_DEV(hw, &pdev->dev);
3909
3910         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
3911         priv->cfg = cfg;
3912         priv->pci_dev = pdev;
3913
3914 #ifdef CONFIG_IWLWIFI_DEBUG
3915         priv->debug_level = priv->cfg->mod_params->debug;
3916         atomic_set(&priv->restrict_refcnt, 0);
3917 #endif
3918
3919         /**************************
3920          * 2. Initializing PCI bus
3921          **************************/
3922         if (pci_enable_device(pdev)) {
3923                 err = -ENODEV;
3924                 goto out_ieee80211_free_hw;
3925         }
3926
3927         pci_set_master(pdev);
3928
3929         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
3930         if (!err)
3931                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
3932         if (err) {
3933                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
3934                 if (!err)
3935                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
3936                 /* both attempts failed: */
3937                 if (err) {
3938                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
3939                                 DRV_NAME);
3940                         goto out_pci_disable_device;
3941                 }
3942         }
3943
3944         err = pci_request_regions(pdev, DRV_NAME);
3945         if (err)
3946                 goto out_pci_disable_device;
3947
3948         pci_set_drvdata(pdev, priv);
3949
3950
3951         /***********************
3952          * 3. Read REV register
3953          ***********************/
3954         priv->hw_base = pci_iomap(pdev, 0, 0);
3955         if (!priv->hw_base) {
3956                 err = -ENODEV;
3957                 goto out_pci_release_regions;
3958         }
3959
3960         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
3961                 (unsigned long long) pci_resource_len(pdev, 0));
3962         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
3963
3964         iwl_hw_detect(priv);
3965         printk(KERN_INFO DRV_NAME
3966                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
3967                 priv->cfg->name, priv->hw_rev);
3968
3969         /* We disable the RETRY_TIMEOUT register (0x41) to keep
3970          * PCI Tx retries from interfering with C3 CPU state */
3971         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
3972
3973         /* amp init */
3974         err = priv->cfg->ops->lib->apm_ops.init(priv);
3975         if (err < 0) {
3976                 IWL_DEBUG_INFO("Failed to init APMG\n");
3977                 goto out_iounmap;
3978         }
3979         /*****************
3980          * 4. Read EEPROM
3981          *****************/
3982         /* Read the EEPROM */
3983         err = iwl_eeprom_init(priv);
3984         if (err) {
3985                 IWL_ERROR("Unable to init EEPROM\n");
3986                 goto out_iounmap;
3987         }
3988         err = iwl_eeprom_check_version(priv);
3989         if (err)
3990                 goto out_iounmap;
3991
3992         /* extract MAC Address */
3993         iwl_eeprom_get_mac(priv, priv->mac_addr);
3994         IWL_DEBUG_INFO("MAC address: %pM\n", priv->mac_addr);
3995         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
3996
3997         /************************
3998          * 5. Setup HW constants
3999          ************************/
4000         if (iwl_set_hw_params(priv)) {
4001                 IWL_ERROR("failed to set hw parameters\n");
4002                 goto out_free_eeprom;
4003         }
4004
4005         /*******************
4006          * 6. Setup priv
4007          *******************/
4008
4009         err = iwl_init_drv(priv);
4010         if (err)
4011                 goto out_free_eeprom;
4012         /* At this point both hw and priv are initialized. */
4013
4014         /**********************************
4015          * 7. Initialize module parameters
4016          **********************************/
4017
4018         /* Disable radio (SW RF KILL) via parameter when loading driver */
4019         if (priv->cfg->mod_params->disable) {
4020                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4021                 IWL_DEBUG_INFO("Radio disabled.\n");
4022         }
4023
4024         /********************
4025          * 8. Setup services
4026          ********************/
4027         spin_lock_irqsave(&priv->lock, flags);
4028         iwl_disable_interrupts(priv);
4029         spin_unlock_irqrestore(&priv->lock, flags);
4030
4031         err = sysfs_create_group(&pdev->dev.kobj, &iwl_attribute_group);
4032         if (err) {
4033                 IWL_ERROR("failed to create sysfs device attributes\n");
4034                 goto out_uninit_drv;
4035         }
4036
4037
4038         iwl_setup_deferred_work(priv);
4039         iwl_setup_rx_handlers(priv);
4040
4041         /********************
4042          * 9. Conclude
4043          ********************/
4044         pci_save_state(pdev);
4045         pci_disable_device(pdev);
4046
4047         /**********************************
4048          * 10. Setup and register mac80211
4049          **********************************/
4050
4051         err = iwl_setup_mac(priv);
4052         if (err)
4053                 goto out_remove_sysfs;
4054
4055         err = iwl_dbgfs_register(priv, DRV_NAME);
4056         if (err)
4057                 IWL_ERROR("failed to create debugfs files\n");
4058
4059         err = iwl_rfkill_init(priv);
4060         if (err)
4061                 IWL_ERROR("Unable to initialize RFKILL system. "
4062                                   "Ignoring error: %d\n", err);
4063         iwl_power_initialize(priv);
4064         return 0;
4065
4066  out_remove_sysfs:
4067         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4068  out_uninit_drv:
4069         iwl_uninit_drv(priv);
4070  out_free_eeprom:
4071         iwl_eeprom_free(priv);
4072  out_iounmap:
4073         pci_iounmap(pdev, priv->hw_base);
4074  out_pci_release_regions:
4075         pci_release_regions(pdev);
4076         pci_set_drvdata(pdev, NULL);
4077  out_pci_disable_device:
4078         pci_disable_device(pdev);
4079  out_ieee80211_free_hw:
4080         ieee80211_free_hw(priv->hw);
4081  out:
4082         return err;
4083 }
4084
4085 static void __devexit iwl_pci_remove(struct pci_dev *pdev)
4086 {
4087         struct iwl_priv *priv = pci_get_drvdata(pdev);
4088         unsigned long flags;
4089
4090         if (!priv)
4091                 return;
4092
4093         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4094
4095         iwl_dbgfs_unregister(priv);
4096         sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
4097
4098         /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
4099          * to be called and iwl_down since we are removing the device
4100          * we need to set STATUS_EXIT_PENDING bit.
4101          */
4102         set_bit(STATUS_EXIT_PENDING, &priv->status);
4103         if (priv->mac80211_registered) {
4104                 ieee80211_unregister_hw(priv->hw);
4105                 priv->mac80211_registered = 0;
4106         } else {
4107                 iwl_down(priv);
4108         }
4109
4110         /* make sure we flush any pending irq or
4111          * tasklet for the driver
4112          */
4113         spin_lock_irqsave(&priv->lock, flags);
4114         iwl_disable_interrupts(priv);
4115         spin_unlock_irqrestore(&priv->lock, flags);
4116
4117         iwl_synchronize_irq(priv);
4118
4119         iwl_rfkill_unregister(priv);
4120         iwl_dealloc_ucode_pci(priv);
4121
4122         if (priv->rxq.bd)
4123                 iwl_rx_queue_free(priv, &priv->rxq);
4124         iwl_hw_txq_ctx_free(priv);
4125
4126         iwl_clear_stations_table(priv);
4127         iwl_eeprom_free(priv);
4128
4129
4130         /*netif_stop_queue(dev); */
4131         flush_workqueue(priv->workqueue);
4132
4133         /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
4134          * priv->workqueue... so we can't take down the workqueue
4135          * until now... */
4136         destroy_workqueue(priv->workqueue);
4137         priv->workqueue = NULL;
4138
4139         pci_iounmap(pdev, priv->hw_base);
4140         pci_release_regions(pdev);
4141         pci_disable_device(pdev);
4142         pci_set_drvdata(pdev, NULL);
4143
4144         iwl_uninit_drv(priv);
4145
4146         if (priv->ibss_beacon)
4147                 dev_kfree_skb(priv->ibss_beacon);
4148
4149         ieee80211_free_hw(priv->hw);
4150 }
4151
4152 #ifdef CONFIG_PM
4153
4154 static int iwl_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4155 {
4156         struct iwl_priv *priv = pci_get_drvdata(pdev);
4157
4158         if (priv->is_open) {
4159                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4160                 iwl_mac_stop(priv->hw);
4161                 priv->is_open = 1;
4162         }
4163
4164         pci_set_power_state(pdev, PCI_D3hot);
4165
4166         return 0;
4167 }
4168
4169 static int iwl_pci_resume(struct pci_dev *pdev)
4170 {
4171         struct iwl_priv *priv = pci_get_drvdata(pdev);
4172
4173         pci_set_power_state(pdev, PCI_D0);
4174
4175         if (priv->is_open)
4176                 iwl_mac_start(priv->hw);
4177
4178         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4179         return 0;
4180 }
4181
4182 #endif /* CONFIG_PM */
4183
4184 /*****************************************************************************
4185  *
4186  * driver and module entry point
4187  *
4188  *****************************************************************************/
4189
4190 /* Hardware specific file defines the PCI IDs table for that hardware module */
4191 static struct pci_device_id iwl_hw_card_ids[] = {
4192 #ifdef CONFIG_IWL4965
4193         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4194         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4195 #endif /* CONFIG_IWL4965 */
4196 #ifdef CONFIG_IWL5000
4197         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4198         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4199         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4200         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4201         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4202         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4203         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4204         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4205         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4206         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4207 /* 5350 WiFi/WiMax */
4208         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4209         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4210         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4211 #endif /* CONFIG_IWL5000 */
4212         {0}
4213 };
4214 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4215
4216 static struct pci_driver iwl_driver = {
4217         .name = DRV_NAME,
4218         .id_table = iwl_hw_card_ids,
4219         .probe = iwl_pci_probe,
4220         .remove = __devexit_p(iwl_pci_remove),
4221 #ifdef CONFIG_PM
4222         .suspend = iwl_pci_suspend,
4223         .resume = iwl_pci_resume,
4224 #endif
4225 };
4226
4227 static int __init iwl_init(void)
4228 {
4229
4230         int ret;
4231         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4232         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4233
4234         ret = iwlagn_rate_control_register();
4235         if (ret) {
4236                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4237                 return ret;
4238         }
4239
4240         ret = pci_register_driver(&iwl_driver);
4241         if (ret) {
4242                 IWL_ERROR("Unable to initialize PCI module\n");
4243                 goto error_register;
4244         }
4245
4246         return ret;
4247
4248 error_register:
4249         iwlagn_rate_control_unregister();
4250         return ret;
4251 }
4252
4253 static void __exit iwl_exit(void)
4254 {
4255         pci_unregister_driver(&iwl_driver);
4256         iwlagn_rate_control_unregister();
4257 }
4258
4259 module_exit(iwl_exit);
4260 module_init(iwl_init);