drivers/net/wireless/iwlwifi/iwl4965-base.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/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  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 iwl4965_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  * iwl4965_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 iwl4965_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 iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl4965_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 iwl4965_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.rx_chain != priv->active_rxon.rx_chain) ||
 211             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 212                 return 1;
 213
 214         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 215          * be updated with the RXON_ASSOC command -- however only some
 216          * flag transitions are allowed using RXON_ASSOC */
 217
 218         /* Check if we are not switching bands */
 219         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 220             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 221                 return 1;
 222
 223         /* Check if we are switching association toggle */
 224         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 225                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 226                 return 1;
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * iwl4965_commit_rxon - commit staging_rxon to hardware
 233  *
 234  * The RXON command in staging_rxon is committed to the hardware and
 235  * the active_rxon structure is updated with the new data.  This
 236  * function correctly transitions out of the RXON_ASSOC_MSK state if
 237  * a HW tune is required based on the RXON structure changes.
 238  */
 239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 240 {
 241         /* cast away the const for active_rxon in this function */
 242         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 243         DECLARE_MAC_BUF(mac);
 244         int ret;
 245         bool new_assoc =
 246                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 247
 248         if (!iwl_is_alive(priv))
 249                 return -EBUSY;
 250
 251         /* always get timestamp with Rx frame */
 252         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 253         /* allow CTS-to-self if possible. this is relevant only for
 254          * 5000, but will not damage 4965 */
 255         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 256
 257         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 258         if (ret) {
 259                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 260                 return -EINVAL;
 261         }
 262
 263         /* If we don't need to send a full RXON, we can use
 264          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 265          * and other flags for the current radio configuration. */
 266         if (!iwl4965_full_rxon_required(priv)) {
 267                 ret = iwl_send_rxon_assoc(priv);
 268                 if (ret) {
 269                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 270                         return ret;
 271                 }
 272
 273                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 274                 return 0;
 275         }
 276
 277         /* station table will be cleared */
 278         priv->assoc_station_added = 0;
 279
 280         /* If we are currently associated and the new config requires
 281          * an RXON_ASSOC and the new config wants the associated mask enabled,
 282          * we must clear the associated from the active configuration
 283          * before we apply the new config */
 284         if (iwl_is_associated(priv) && new_assoc) {
 285                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 286                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 287
 288                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 289                                       sizeof(struct iwl_rxon_cmd),
 290                                       &priv->active_rxon);
 291
 292                 /* If the mask clearing failed then we set
 293                  * active_rxon back to what it was previously */
 294                 if (ret) {
 295                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 296                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 297                         return ret;
 298                 }
 299         }
 300
 301         IWL_DEBUG_INFO("Sending RXON\n"
 302                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 303                        "* channel = %d\n"
 304                        "* bssid = %s\n",
 305                        (new_assoc ? "" : "out"),
 306                        le16_to_cpu(priv->staging_rxon.channel),
 307                        print_mac(mac, priv->staging_rxon.bssid_addr));
 308
 309         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 310
 311         /* Apply the new configuration
 312          * RXON unassoc clears the station table in uCode, send it before
 313          * we add the bcast station. If assoc bit is set, we will send RXON
 314          * after having added the bcast and bssid station.
 315          */
 316         if (!new_assoc) {
 317                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 318                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 319                 if (ret) {
 320                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 321                         return ret;
 322                 }
 323                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 324         }
 325
 326         iwl_clear_stations_table(priv);
 327
 328         if (!priv->error_recovering)
 329                 priv->start_calib = 0;
 330
 331         /* Add the broadcast address so we can send broadcast frames */
 332         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 333                                                 IWL_INVALID_STATION) {
 334                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 335                 return -EIO;
 336         }
 337
 338         /* If we have set the ASSOC_MSK and we are in BSS mode then
 339          * add the IWL_AP_ID to the station rate table */
 340         if (new_assoc) {
 341                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 342                         ret = iwl_rxon_add_station(priv,
 343                                            priv->active_rxon.bssid_addr, 1);
 344                         if (ret == IWL_INVALID_STATION) {
 345                                 IWL_ERROR("Error adding AP address for TX.\n");
 346                                 return -EIO;
 347                         }
 348                         priv->assoc_station_added = 1;
 349                         if (priv->default_wep_key &&
 350                             iwl_send_static_wepkey_cmd(priv, 0))
 351                                 IWL_ERROR("Could not send WEP static key.\n");
 352                 }
 353
 354                 /* Apply the new configuration
 355                  * RXON assoc doesn't clear the station table in uCode,
 356                  */
 357                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 358                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 359                 if (ret) {
 360                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 361                         return ret;
 362                 }
 363                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 364         }
 365
 366         iwl_init_sensitivity(priv);
 367
 368         /* If we issue a new RXON command which required a tune then we must
 369          * send a new TXPOWER command or we won't be able to Tx any frames */
 370         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 371         if (ret) {
 372                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 373                 return ret;
 374         }
 375
 376         return 0;
 377 }
 378
 379 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 380 {
 381
 382         iwl_set_rxon_chain(priv);
 383         iwl4965_commit_rxon(priv);
 384 }
 385
 386 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 387 {
 388         struct iwl4965_bt_cmd bt_cmd = {
 389                 .flags = 3,
 390                 .lead_time = 0xAA,
 391                 .max_kill = 1,
 392                 .kill_ack_mask = 0,
 393                 .kill_cts_mask = 0,
 394         };
 395
 396         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 397                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 398 }
 399
 400 static void iwl_clear_free_frames(struct iwl_priv *priv)
 401 {
 402         struct list_head *element;
 403
 404         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 405                        priv->frames_count);
 406
 407         while (!list_empty(&priv->free_frames)) {
 408                 element = priv->free_frames.next;
 409                 list_del(element);
 410                 kfree(list_entry(element, struct iwl_frame, list));
 411                 priv->frames_count--;
 412         }
 413
 414         if (priv->frames_count) {
 415                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 416                             priv->frames_count);
 417                 priv->frames_count = 0;
 418         }
 419 }
 420
 421 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 422 {
 423         struct iwl_frame *frame;
 424         struct list_head *element;
 425         if (list_empty(&priv->free_frames)) {
 426                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 427                 if (!frame) {
 428                         IWL_ERROR("Could not allocate frame!\n");
 429                         return NULL;
 430                 }
 431
 432                 priv->frames_count++;
 433                 return frame;
 434         }
 435
 436         element = priv->free_frames.next;
 437         list_del(element);
 438         return list_entry(element, struct iwl_frame, list);
 439 }
 440
 441 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 442 {
 443         memset(frame, 0, sizeof(*frame));
 444         list_add(&frame->list, &priv->free_frames);
 445 }
 446
 447 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 448                                 struct ieee80211_hdr *hdr,
 449                                 const u8 *dest, int left)
 450 {
 451
 452         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 453             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 454              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 455                 return 0;
 456
 457         if (priv->ibss_beacon->len > left)
 458                 return 0;
 459
 460         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 461
 462         return priv->ibss_beacon->len;
 463 }
 464
 465 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 466 {
 467         int i;
 468         int rate_mask;
 469
 470         /* Set rate mask*/
 471         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 472                 rate_mask = priv->active_rate_basic & 0xF;
 473         else
 474                 rate_mask = priv->active_rate_basic & 0xFF0;
 475
 476         /* Find lowest valid rate */
 477         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 478                                         i = iwl_rates[i].next_ieee) {
 479                 if (rate_mask & (1 << i))
 480                         return iwl_rates[i].plcp;
 481         }
 482
 483         /* No valid rate was found. Assign the lowest one */
 484         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 485                 return IWL_RATE_1M_PLCP;
 486         else
 487                 return IWL_RATE_6M_PLCP;
 488 }
 489
 490 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 491 {
 492         struct iwl_frame *frame;
 493         unsigned int frame_size;
 494         int rc;
 495         u8 rate;
 496
 497         frame = iwl_get_free_frame(priv);
 498
 499         if (!frame) {
 500                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 501                           "command.\n");
 502                 return -ENOMEM;
 503         }
 504
 505         rate = iwl4965_rate_get_lowest_plcp(priv);
 506
 507         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 508
 509         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 510                               &frame->u.cmd[0]);
 511
 512         iwl_free_frame(priv, frame);
 513
 514         return rc;
 515 }
 516
 517 /******************************************************************************
 518  *
 519  * Misc. internal state and helper functions
 520  *
 521  ******************************************************************************/
 522
 523 static void iwl4965_ht_conf(struct iwl_priv *priv,
 524                             struct ieee80211_bss_conf *bss_conf)
 525 {
 526         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 527         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 528         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 529
 530         IWL_DEBUG_MAC80211("enter: \n");
 531
 532         iwl_conf->is_ht = bss_conf->assoc_ht;
 533
 534         if (!iwl_conf->is_ht)
 535                 return;
 536
 537         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 538
 539         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 540                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 541         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 542                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 543
 544         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 545         iwl_conf->max_amsdu_size =
 546                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 547
 548         iwl_conf->supported_chan_width =
 549                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 550         iwl_conf->extension_chan_offset =
 551                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 552         /* If no above or below channel supplied disable FAT channel */
 553         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 554             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 555                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 556                 iwl_conf->supported_chan_width = 0;
 557         }
 558
 559         iwl_conf->tx_mimo_ps_mode =
 560                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 561         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 562
 563         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 564         iwl_conf->tx_chan_width =
 565                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 566         iwl_conf->ht_protection =
 567                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 568         iwl_conf->non_GF_STA_present =
 569                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 570
 571         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 572         IWL_DEBUG_MAC80211("leave\n");
 573 }
 574
 575 /*
 576  * QoS  support
 577 */
 578 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 579 {
 580         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 581                 return;
 582
 583         if (!priv->qos_data.qos_enable)
 584                 return;
 585
 586         priv->qos_data.def_qos_parm.qos_flags = 0;
 587
 588         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 589             !priv->qos_data.qos_cap.q_AP.txop_request)
 590                 priv->qos_data.def_qos_parm.qos_flags |=
 591                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 592         if (priv->qos_data.qos_active)
 593                 priv->qos_data.def_qos_parm.qos_flags |=
 594                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 595
 596         if (priv->current_ht_config.is_ht)
 597                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 598
 599         if (force || iwl_is_associated(priv)) {
 600                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 601                                 priv->qos_data.qos_active,
 602                                 priv->qos_data.def_qos_parm.qos_flags);
 603
 604                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 605                                        sizeof(struct iwl_qosparam_cmd),
 606                                        &priv->qos_data.def_qos_parm, NULL);
 607         }
 608 }
 609
 610 #define MAX_UCODE_BEACON_INTERVAL       4096
 611 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 612
 613 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 614 {
 615         u16 new_val = 0;
 616         u16 beacon_factor = 0;
 617
 618         beacon_factor =
 619             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 620                 / MAX_UCODE_BEACON_INTERVAL;
 621         new_val = beacon_val / beacon_factor;
 622
 623         return cpu_to_le16(new_val);
 624 }
 625
 626 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 627 {
 628         u64 interval_tm_unit;
 629         u64 tsf, result;
 630         unsigned long flags;
 631         struct ieee80211_conf *conf = NULL;
 632         u16 beacon_int = 0;
 633
 634         conf = ieee80211_get_hw_conf(priv->hw);
 635
 636         spin_lock_irqsave(&priv->lock, flags);
 637         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 638         priv->rxon_timing.timestamp.dw[0] =
 639                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 640
 641         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 642
 643         tsf = priv->timestamp;
 644
 645         beacon_int = priv->beacon_int;
 646         spin_unlock_irqrestore(&priv->lock, flags);
 647
 648         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 649                 if (beacon_int == 0) {
 650                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 651                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 652                 } else {
 653                         priv->rxon_timing.beacon_interval =
 654                                 cpu_to_le16(beacon_int);
 655                         priv->rxon_timing.beacon_interval =
 656                             iwl4965_adjust_beacon_interval(
 657                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 658                 }
 659
 660                 priv->rxon_timing.atim_window = 0;
 661         } else {
 662                 priv->rxon_timing.beacon_interval =
 663                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 664                 /* TODO: we need to get atim_window from upper stack
 665                  * for now we set to 0 */
 666                 priv->rxon_timing.atim_window = 0;
 667         }
 668
 669         interval_tm_unit =
 670                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 671         result = do_div(tsf, interval_tm_unit);
 672         priv->rxon_timing.beacon_init_val =
 673             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 674
 675         IWL_DEBUG_ASSOC
 676             ("beacon interval %d beacon timer %d beacon tim %d\n",
 677                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 678                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 679                 le16_to_cpu(priv->rxon_timing.atim_window));
 680 }
 681
 682 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 683                                    enum ieee80211_band band)
 684 {
 685         if (band == IEEE80211_BAND_5GHZ) {
 686                 priv->staging_rxon.flags &=
 687                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 688                       | RXON_FLG_CCK_MSK);
 689                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 690         } else {
 691                 /* Copied from iwl4965_post_associate() */
 692                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 693                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 694                 else
 695                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 696
 697                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 698                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 699
 700                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 701                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 702                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 703         }
 704 }
 705
 706 /*
 707  * initialize rxon structure with default values from eeprom
 708  */
 709 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 710 {
 711         const struct iwl_channel_info *ch_info;
 712
 713         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 714
 715         switch (priv->iw_mode) {
 716         case IEEE80211_IF_TYPE_AP:
 717                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 718                 break;
 719
 720         case IEEE80211_IF_TYPE_STA:
 721                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 722                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 723                 break;
 724
 725         case IEEE80211_IF_TYPE_IBSS:
 726                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 727                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 728                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 729                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 730                 break;
 731
 732         case IEEE80211_IF_TYPE_MNTR:
 733                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 734                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 735                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 736                 break;
 737         default:
 738                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 739                 break;
 740         }
 741
 742 #if 0
 743         /* TODO:  Figure out when short_preamble would be set and cache from
 744          * that */
 745         if (!hw_to_local(priv->hw)->short_preamble)
 746                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 747         else
 748                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 749 #endif
 750
 751         ch_info = iwl_get_channel_info(priv, priv->band,
 752                                        le16_to_cpu(priv->active_rxon.channel));
 753
 754         if (!ch_info)
 755                 ch_info = &priv->channel_info[0];
 756
 757         /*
 758          * in some case A channels are all non IBSS
 759          * in this case force B/G channel
 760          */
 761         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 762             !(is_channel_ibss(ch_info)))
 763                 ch_info = &priv->channel_info[0];
 764
 765         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 766         priv->band = ch_info->band;
 767
 768         iwl_set_flags_for_band(priv, priv->band);
 769
 770         priv->staging_rxon.ofdm_basic_rates =
 771             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 772         priv->staging_rxon.cck_basic_rates =
 773             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 774
 775         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 776                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 777         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 778         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 779         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 780         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 781         iwl_set_rxon_chain(priv);
 782 }
 783
 784 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 785 {
 786         priv->iw_mode = mode;
 787
 788         iwl4965_connection_init_rx_config(priv);
 789         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 790
 791         iwl_clear_stations_table(priv);
 792
 793         /* dont commit rxon if rf-kill is on*/
 794         if (!iwl_is_ready_rf(priv))
 795                 return -EAGAIN;
 796
 797         cancel_delayed_work(&priv->scan_check);
 798         if (iwl_scan_cancel_timeout(priv, 100)) {
 799                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 800                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 801                 return -EAGAIN;
 802         }
 803
 804         iwl4965_commit_rxon(priv);
 805
 806         return 0;
 807 }
 808
 809 static void iwl4965_set_rate(struct iwl_priv *priv)
 810 {
 811         const struct ieee80211_supported_band *hw = NULL;
 812         struct ieee80211_rate *rate;
 813         int i;
 814
 815         hw = iwl_get_hw_mode(priv, priv->band);
 816         if (!hw) {
 817                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 818                 return;
 819         }
 820
 821         priv->active_rate = 0;
 822         priv->active_rate_basic = 0;
 823
 824         for (i = 0; i < hw->n_bitrates; i++) {
 825                 rate = &(hw->bitrates[i]);
 826                 if (rate->hw_value < IWL_RATE_COUNT)
 827                         priv->active_rate |= (1 << rate->hw_value);
 828         }
 829
 830         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 831                        priv->active_rate, priv->active_rate_basic);
 832
 833         /*
 834          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 835          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 836          * OFDM
 837          */
 838         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 839                 priv->staging_rxon.cck_basic_rates =
 840                     ((priv->active_rate_basic &
 841                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 842         else
 843                 priv->staging_rxon.cck_basic_rates =
 844                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 845
 846         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 847                 priv->staging_rxon.ofdm_basic_rates =
 848                     ((priv->active_rate_basic &
 849                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 850                       IWL_FIRST_OFDM_RATE) & 0xFF;
 851         else
 852                 priv->staging_rxon.ofdm_basic_rates =
 853                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 854 }
 855
 856 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 857
 858 #include "iwl-spectrum.h"
 859
 860 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 861 #define BEACON_TIME_MASK_HIGH   0xFF000000
 862 #define TIME_UNIT               1024
 863
 864 /*
 865  * extended beacon time format
 866  * time in usec will be changed into a 32-bit value in 8:24 format
 867  * the high 1 byte is the beacon counts
 868  * the lower 3 bytes is the time in usec within one beacon interval
 869  */
 870
 871 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 872 {
 873         u32 quot;
 874         u32 rem;
 875         u32 interval = beacon_interval * 1024;
 876
 877         if (!interval || !usec)
 878                 return 0;
 879
 880         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 881         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 882
 883         return (quot << 24) + rem;
 884 }
 885
 886 /* base is usually what we get from ucode with each received frame,
 887  * the same as HW timer counter counting down
 888  */
 889
 890 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 891 {
 892         u32 base_low = base & BEACON_TIME_MASK_LOW;
 893         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 894         u32 interval = beacon_interval * TIME_UNIT;
 895         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 896             (addon & BEACON_TIME_MASK_HIGH);
 897
 898         if (base_low > addon_low)
 899                 res += base_low - addon_low;
 900         else if (base_low < addon_low) {
 901                 res += interval + base_low - addon_low;
 902                 res += (1 << 24);
 903         } else
 904                 res += (1 << 24);
 905
 906         return cpu_to_le32(res);
 907 }
 908
 909 static int iwl4965_get_measurement(struct iwl_priv *priv,
 910                                struct ieee80211_measurement_params *params,
 911                                u8 type)
 912 {
 913         struct iwl4965_spectrum_cmd spectrum;
 914         struct iwl_rx_packet *res;
 915         struct iwl_host_cmd cmd = {
 916                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 917                 .data = (void *)&spectrum,
 918                 .meta.flags = CMD_WANT_SKB,
 919         };
 920         u32 add_time = le64_to_cpu(params->start_time);
 921         int rc;
 922         int spectrum_resp_status;
 923         int duration = le16_to_cpu(params->duration);
 924
 925         if (iwl_is_associated(priv))
 926                 add_time =
 927                     iwl4965_usecs_to_beacons(
 928                         le64_to_cpu(params->start_time) - priv->last_tsf,
 929                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 930
 931         memset(&spectrum, 0, sizeof(spectrum));
 932
 933         spectrum.channel_count = cpu_to_le16(1);
 934         spectrum.flags =
 935             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 936         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 937         cmd.len = sizeof(spectrum);
 938         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 939
 940         if (iwl_is_associated(priv))
 941                 spectrum.start_time =
 942                     iwl4965_add_beacon_time(priv->last_beacon_time,
 943                                 add_time,
 944                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 945         else
 946                 spectrum.start_time = 0;
 947
 948         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 949         spectrum.channels[0].channel = params->channel;
 950         spectrum.channels[0].type = type;
 951         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 952                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 953                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 954
 955         rc = iwl_send_cmd_sync(priv, &cmd);
 956         if (rc)
 957                 return rc;
 958
 959         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 960         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 961                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 962                 rc = -EIO;
 963         }
 964
 965         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 966         switch (spectrum_resp_status) {
 967         case 0:         /* Command will be handled */
 968                 if (res->u.spectrum.id != 0xff) {
 969                         IWL_DEBUG_INFO
 970                             ("Replaced existing measurement: %d\n",
 971                              res->u.spectrum.id);
 972                         priv->measurement_status &= ~MEASUREMENT_READY;
 973                 }
 974                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 975                 rc = 0;
 976                 break;
 977
 978         case 1:         /* Command will not be handled */
 979                 rc = -EAGAIN;
 980                 break;
 981         }
 982
 983         dev_kfree_skb_any(cmd.meta.u.skb);
 984
 985         return rc;
 986 }
 987 #endif
 988
 989 /******************************************************************************
 990  *
 991  * Generic RX handler implementations
 992  *
 993  ******************************************************************************/
 994 static void iwl_rx_reply_alive(struct iwl_priv *priv,
 995                                 struct iwl_rx_mem_buffer *rxb)
 996 {
 997         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
 998         struct iwl_alive_resp *palive;
 999         struct delayed_work *pwork;
1000
1001         palive = &pkt->u.alive_frame;
1002
1003         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1004                        "0x%01X 0x%01X\n",
1005                        palive->is_valid, palive->ver_type,
1006                        palive->ver_subtype);
1007
1008         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1009                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1010                 memcpy(&priv->card_alive_init,
1011                        &pkt->u.alive_frame,
1012                        sizeof(struct iwl_init_alive_resp));
1013                 pwork = &priv->init_alive_start;
1014         } else {
1015                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1016                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1017                        sizeof(struct iwl_alive_resp));
1018                 pwork = &priv->alive_start;
1019         }
1020
1021         /* We delay the ALIVE response by 5ms to
1022          * give the HW RF Kill time to activate... */
1023         if (palive->is_valid == UCODE_VALID_OK)
1024                 queue_delayed_work(priv->workqueue, pwork,
1025                                    msecs_to_jiffies(5));
1026         else
1027                 IWL_WARNING("uCode did not respond OK.\n");
1028 }
1029
1030 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1031                                    struct iwl_rx_mem_buffer *rxb)
1032 {
1033         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1034
1035         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1036                 "seq 0x%04X ser 0x%08X\n",
1037                 le32_to_cpu(pkt->u.err_resp.error_type),
1038                 get_cmd_string(pkt->u.err_resp.cmd_id),
1039                 pkt->u.err_resp.cmd_id,
1040                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1041                 le32_to_cpu(pkt->u.err_resp.error_info));
1042 }
1043
1044 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1045
1046 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1047 {
1048         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1049         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1050         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1051         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1052                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1053         rxon->channel = csa->channel;
1054         priv->staging_rxon.channel = csa->channel;
1055 }
1056
1057 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1058                                           struct iwl_rx_mem_buffer *rxb)
1059 {
1060 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1061         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1062         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1063
1064         if (!report->state) {
1065                 IWL_DEBUG(IWL_DL_11H,
1066                         "Spectrum Measure Notification: Start\n");
1067                 return;
1068         }
1069
1070         memcpy(&priv->measure_report, report, sizeof(*report));
1071         priv->measurement_status |= MEASUREMENT_READY;
1072 #endif
1073 }
1074
1075 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1076                                       struct iwl_rx_mem_buffer *rxb)
1077 {
1078 #ifdef CONFIG_IWLWIFI_DEBUG
1079         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1080         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1081         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1082                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1083 #endif
1084 }
1085
1086 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1087                                              struct iwl_rx_mem_buffer *rxb)
1088 {
1089         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1090         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1091                         "notification for %s:\n",
1092                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1093         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1094 }
1095
1096 static void iwl4965_bg_beacon_update(struct work_struct *work)
1097 {
1098         struct iwl_priv *priv =
1099                 container_of(work, struct iwl_priv, beacon_update);
1100         struct sk_buff *beacon;
1101
1102         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1103         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1104
1105         if (!beacon) {
1106                 IWL_ERROR("update beacon failed\n");
1107                 return;
1108         }
1109
1110         mutex_lock(&priv->mutex);
1111         /* new beacon skb is allocated every time; dispose previous.*/
1112         if (priv->ibss_beacon)
1113                 dev_kfree_skb(priv->ibss_beacon);
1114
1115         priv->ibss_beacon = beacon;
1116         mutex_unlock(&priv->mutex);
1117
1118         iwl4965_send_beacon_cmd(priv);
1119 }
1120
1121 /**
1122  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1123  *
1124  * This callback is provided in order to send a statistics request.
1125  *
1126  * This timer function is continually reset to execute within
1127  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1128  * was received.  We need to ensure we receive the statistics in order
1129  * to update the temperature used for calibrating the TXPOWER.
1130  */
1131 static void iwl4965_bg_statistics_periodic(unsigned long data)
1132 {
1133         struct iwl_priv *priv = (struct iwl_priv *)data;
1134
1135         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1136                 return;
1137
1138         iwl_send_statistics_request(priv, CMD_ASYNC);
1139 }
1140
1141 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1142                                 struct iwl_rx_mem_buffer *rxb)
1143 {
1144 #ifdef CONFIG_IWLWIFI_DEBUG
1145         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1146         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1147         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1148
1149         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1150                 "tsf %d %d rate %d\n",
1151                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1152                 beacon->beacon_notify_hdr.failure_frame,
1153                 le32_to_cpu(beacon->ibss_mgr_status),
1154                 le32_to_cpu(beacon->high_tsf),
1155                 le32_to_cpu(beacon->low_tsf), rate);
1156 #endif
1157
1158         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1159             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1160                 queue_work(priv->workqueue, &priv->beacon_update);
1161 }
1162
1163 /* Handle notification from uCode that card's power state is changing
1164  * due to software, hardware, or critical temperature RFKILL */
1165 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1166                                     struct iwl_rx_mem_buffer *rxb)
1167 {
1168         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1169         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1170         unsigned long status = priv->status;
1171
1172         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1173                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1174                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1175
1176         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1177                      RF_CARD_DISABLED)) {
1178
1179                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1180                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1181
1182                 if (!iwl_grab_nic_access(priv)) {
1183                         iwl_write_direct32(
1184                                 priv, HBUS_TARG_MBX_C,
1185                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1186
1187                         iwl_release_nic_access(priv);
1188                 }
1189
1190                 if (!(flags & RXON_CARD_DISABLED)) {
1191                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1192                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193                         if (!iwl_grab_nic_access(priv)) {
1194                                 iwl_write_direct32(
1195                                         priv, HBUS_TARG_MBX_C,
1196                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1197
1198                                 iwl_release_nic_access(priv);
1199                         }
1200                 }
1201
1202                 if (flags & RF_CARD_DISABLED) {
1203                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1204                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1205                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1206                         if (!iwl_grab_nic_access(priv))
1207                                 iwl_release_nic_access(priv);
1208                 }
1209         }
1210
1211         if (flags & HW_CARD_DISABLED)
1212                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1213         else
1214                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1215
1216
1217         if (flags & SW_CARD_DISABLED)
1218                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1219         else
1220                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1221
1222         if (!(flags & RXON_CARD_DISABLED))
1223                 iwl_scan_cancel(priv);
1224
1225         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1226              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1227             (test_bit(STATUS_RF_KILL_SW, &status) !=
1228              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1229                 queue_work(priv->workqueue, &priv->rf_kill);
1230         else
1231                 wake_up_interruptible(&priv->wait_command_queue);
1232 }
1233
1234 /**
1235  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1236  *
1237  * Setup the RX handlers for each of the reply types sent from the uCode
1238  * to the host.
1239  *
1240  * This function chains into the hardware specific files for them to setup
1241  * any hardware specific handlers as well.
1242  */
1243 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1244 {
1245         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1246         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1247         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1248         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1249             iwl4965_rx_spectrum_measure_notif;
1250         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1251         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1252             iwl4965_rx_pm_debug_statistics_notif;
1253         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1254
1255         /*
1256          * The same handler is used for both the REPLY to a discrete
1257          * statistics request from the host as well as for the periodic
1258          * statistics notifications (after received beacons) from the uCode.
1259          */
1260         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1261         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1262
1263         iwl_setup_rx_scan_handlers(priv);
1264
1265         /* status change handler */
1266         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1267
1268         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1269             iwl_rx_missed_beacon_notif;
1270         /* Rx handlers */
1271         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1272         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1273         /* block ack */
1274         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1275         /* Set up hardware specific Rx handlers */
1276         priv->cfg->ops->lib->rx_handler_setup(priv);
1277 }
1278
1279 /*
1280  * this should be called while priv->lock is locked
1281 */
1282 static void __iwl_rx_replenish(struct iwl_priv *priv)
1283 {
1284         iwl_rx_allocate(priv);
1285         iwl_rx_queue_restock(priv);
1286 }
1287
1288
1289 /**
1290  * iwl_rx_handle - Main entry function for receiving responses from uCode
1291  *
1292  * Uses the priv->rx_handlers callback function array to invoke
1293  * the appropriate handlers, including command responses,
1294  * frame-received notifications, and other notifications.
1295  */
1296 void iwl_rx_handle(struct iwl_priv *priv)
1297 {
1298         struct iwl_rx_mem_buffer *rxb;
1299         struct iwl_rx_packet *pkt;
1300         struct iwl_rx_queue *rxq = &priv->rxq;
1301         u32 r, i;
1302         int reclaim;
1303         unsigned long flags;
1304         u8 fill_rx = 0;
1305         u32 count = 8;
1306
1307         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1308          * buffer that the driver may process (last buffer filled by ucode). */
1309         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1310         i = rxq->read;
1311
1312         /* Rx interrupt, but nothing sent from uCode */
1313         if (i == r)
1314                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1315
1316         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1317                 fill_rx = 1;
1318
1319         while (i != r) {
1320                 rxb = rxq->queue[i];
1321
1322                 /* If an RXB doesn't have a Rx queue slot associated with it,
1323                  * then a bug has been introduced in the queue refilling
1324                  * routines -- catch it here */
1325                 BUG_ON(rxb == NULL);
1326
1327                 rxq->queue[i] = NULL;
1328
1329                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1330                                             priv->hw_params.rx_buf_size,
1331                                             PCI_DMA_FROMDEVICE);
1332                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1333
1334                 /* Reclaim a command buffer only if this packet is a response
1335                  *   to a (driver-originated) command.
1336                  * If the packet (e.g. Rx frame) originated from uCode,
1337                  *   there is no command buffer to reclaim.
1338                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1339                  *   but apparently a few don't get set; catch them here. */
1340                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1341                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1342                         (pkt->hdr.cmd != REPLY_RX) &&
1343                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1344                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1345                         (pkt->hdr.cmd != REPLY_TX);
1346
1347                 /* Based on type of command response or notification,
1348                  *   handle those that need handling via function in
1349                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1350                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1351                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1352                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1353                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1354                 } else {
1355                         /* No handling needed */
1356                         IWL_DEBUG(IWL_DL_RX,
1357                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1358                                 r, i, get_cmd_string(pkt->hdr.cmd),
1359                                 pkt->hdr.cmd);
1360                 }
1361
1362                 if (reclaim) {
1363                         /* Invoke any callbacks, transfer the skb to caller, and
1364                          * fire off the (possibly) blocking iwl_send_cmd()
1365                          * as we reclaim the driver command queue */
1366                         if (rxb && rxb->skb)
1367                                 iwl_tx_cmd_complete(priv, rxb);
1368                         else
1369                                 IWL_WARNING("Claim null rxb?\n");
1370                 }
1371
1372                 /* For now we just don't re-use anything.  We can tweak this
1373                  * later to try and re-use notification packets and SKBs that
1374                  * fail to Rx correctly */
1375                 if (rxb->skb != NULL) {
1376                         priv->alloc_rxb_skb--;
1377                         dev_kfree_skb_any(rxb->skb);
1378                         rxb->skb = NULL;
1379                 }
1380
1381                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1382                                  priv->hw_params.rx_buf_size,
1383                                  PCI_DMA_FROMDEVICE);
1384                 spin_lock_irqsave(&rxq->lock, flags);
1385                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1386                 spin_unlock_irqrestore(&rxq->lock, flags);
1387                 i = (i + 1) & RX_QUEUE_MASK;
1388                 /* If there are a lot of unused frames,
1389                  * restock the Rx queue so ucode wont assert. */
1390                 if (fill_rx) {
1391                         count++;
1392                         if (count >= 8) {
1393                                 priv->rxq.read = i;
1394                                 __iwl_rx_replenish(priv);
1395                                 count = 0;
1396                         }
1397                 }
1398         }
1399
1400         /* Backtrack one entry */
1401         priv->rxq.read = i;
1402         iwl_rx_queue_restock(priv);
1403 }
1404
1405 #ifdef CONFIG_IWLWIFI_DEBUG
1406 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1407 {
1408         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1409         DECLARE_MAC_BUF(mac);
1410
1411         IWL_DEBUG_RADIO("RX CONFIG:\n");
1412         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1413         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1414         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1415         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1416                         le32_to_cpu(rxon->filter_flags));
1417         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1418         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1419                         rxon->ofdm_basic_rates);
1420         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1421         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1422                         print_mac(mac, rxon->node_addr));
1423         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1424                         print_mac(mac, rxon->bssid_addr));
1425         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1426 }
1427 #endif
1428
1429 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1430 {
1431         IWL_DEBUG_ISR("Enabling interrupts\n");
1432         set_bit(STATUS_INT_ENABLED, &priv->status);
1433         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1434 }
1435
1436 /* call this function to flush any scheduled tasklet */
1437 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1438 {
1439         /* wait to make sure we flush pedding tasklet*/
1440         synchronize_irq(priv->pci_dev->irq);
1441         tasklet_kill(&priv->irq_tasklet);
1442 }
1443
1444 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1445 {
1446         clear_bit(STATUS_INT_ENABLED, &priv->status);
1447
1448         /* disable interrupts from uCode/NIC to host */
1449         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1450
1451         /* acknowledge/clear/reset any interrupts still pending
1452          * from uCode or flow handler (Rx/Tx DMA) */
1453         iwl_write32(priv, CSR_INT, 0xffffffff);
1454         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1455         IWL_DEBUG_ISR("Disabled interrupts\n");
1456 }
1457
1458
1459 /**
1460  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1461  */
1462 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1463 {
1464         /* Set the FW error flag -- cleared on iwl4965_down */
1465         set_bit(STATUS_FW_ERROR, &priv->status);
1466
1467         /* Cancel currently queued command. */
1468         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1469
1470 #ifdef CONFIG_IWLWIFI_DEBUG
1471         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1472                 iwl_dump_nic_error_log(priv);
1473                 iwl_dump_nic_event_log(priv);
1474                 iwl4965_print_rx_config_cmd(priv);
1475         }
1476 #endif
1477
1478         wake_up_interruptible(&priv->wait_command_queue);
1479
1480         /* Keep the restart process from trying to send host
1481          * commands by clearing the INIT status bit */
1482         clear_bit(STATUS_READY, &priv->status);
1483
1484         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1485                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1486                           "Restarting adapter due to uCode error.\n");
1487
1488                 if (iwl_is_associated(priv)) {
1489                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1490                                sizeof(priv->recovery_rxon));
1491                         priv->error_recovering = 1;
1492                 }
1493                 if (priv->cfg->mod_params->restart_fw)
1494                         queue_work(priv->workqueue, &priv->restart);
1495         }
1496 }
1497
1498 static void iwl4965_error_recovery(struct iwl_priv *priv)
1499 {
1500         unsigned long flags;
1501
1502         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1503                sizeof(priv->staging_rxon));
1504         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1505         iwl4965_commit_rxon(priv);
1506
1507         iwl_rxon_add_station(priv, priv->bssid, 1);
1508
1509         spin_lock_irqsave(&priv->lock, flags);
1510         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1511         priv->error_recovering = 0;
1512         spin_unlock_irqrestore(&priv->lock, flags);
1513 }
1514
1515 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1516 {
1517         u32 inta, handled = 0;
1518         u32 inta_fh;
1519         unsigned long flags;
1520 #ifdef CONFIG_IWLWIFI_DEBUG
1521         u32 inta_mask;
1522 #endif
1523
1524         spin_lock_irqsave(&priv->lock, flags);
1525
1526         /* Ack/clear/reset pending uCode interrupts.
1527          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1528          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1529         inta = iwl_read32(priv, CSR_INT);
1530         iwl_write32(priv, CSR_INT, inta);
1531
1532         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1533          * Any new interrupts that happen after this, either while we're
1534          * in this tasklet, or later, will show up in next ISR/tasklet. */
1535         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1536         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1537
1538 #ifdef CONFIG_IWLWIFI_DEBUG
1539         if (priv->debug_level & IWL_DL_ISR) {
1540                 /* just for debug */
1541                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1542                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1543                               inta, inta_mask, inta_fh);
1544         }
1545 #endif
1546
1547         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1548          * atomic, make sure that inta covers all the interrupts that
1549          * we've discovered, even if FH interrupt came in just after
1550          * reading CSR_INT. */
1551         if (inta_fh & CSR49_FH_INT_RX_MASK)
1552                 inta |= CSR_INT_BIT_FH_RX;
1553         if (inta_fh & CSR49_FH_INT_TX_MASK)
1554                 inta |= CSR_INT_BIT_FH_TX;
1555
1556         /* Now service all interrupt bits discovered above. */
1557         if (inta & CSR_INT_BIT_HW_ERR) {
1558                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1559
1560                 /* Tell the device to stop sending interrupts */
1561                 iwl4965_disable_interrupts(priv);
1562
1563                 iwl4965_irq_handle_error(priv);
1564
1565                 handled |= CSR_INT_BIT_HW_ERR;
1566
1567                 spin_unlock_irqrestore(&priv->lock, flags);
1568
1569                 return;
1570         }
1571
1572 #ifdef CONFIG_IWLWIFI_DEBUG
1573         if (priv->debug_level & (IWL_DL_ISR)) {
1574                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1575                 if (inta & CSR_INT_BIT_SCD)
1576                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1577                                       "the frame/frames.\n");
1578
1579                 /* Alive notification via Rx interrupt will do the real work */
1580                 if (inta & CSR_INT_BIT_ALIVE)
1581                         IWL_DEBUG_ISR("Alive interrupt\n");
1582         }
1583 #endif
1584         /* Safely ignore these bits for debug checks below */
1585         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1586
1587         /* HW RF KILL switch toggled */
1588         if (inta & CSR_INT_BIT_RF_KILL) {
1589                 int hw_rf_kill = 0;
1590                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1591                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1592                         hw_rf_kill = 1;
1593
1594                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1595                                 hw_rf_kill ? "disable radio":"enable radio");
1596
1597                 /* driver only loads ucode once setting the interface up.
1598                  * the driver as well won't allow loading if RFKILL is set
1599                  * therefore no need to restart the driver from this handler
1600                  */
1601                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1602                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1603
1604                 handled |= CSR_INT_BIT_RF_KILL;
1605         }
1606
1607         /* Chip got too hot and stopped itself */
1608         if (inta & CSR_INT_BIT_CT_KILL) {
1609                 IWL_ERROR("Microcode CT kill error detected.\n");
1610                 handled |= CSR_INT_BIT_CT_KILL;
1611         }
1612
1613         /* Error detected by uCode */
1614         if (inta & CSR_INT_BIT_SW_ERR) {
1615                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1616                           inta);
1617                 iwl4965_irq_handle_error(priv);
1618                 handled |= CSR_INT_BIT_SW_ERR;
1619         }
1620
1621         /* uCode wakes up after power-down sleep */
1622         if (inta & CSR_INT_BIT_WAKEUP) {
1623                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1624                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1625                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1626                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1627                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1628                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1629                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1630                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1631
1632                 handled |= CSR_INT_BIT_WAKEUP;
1633         }
1634
1635         /* All uCode command responses, including Tx command responses,
1636          * Rx "responses" (frame-received notification), and other
1637          * notifications from uCode come through here*/
1638         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1639                 iwl_rx_handle(priv);
1640                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1641         }
1642
1643         if (inta & CSR_INT_BIT_FH_TX) {
1644                 IWL_DEBUG_ISR("Tx interrupt\n");
1645                 handled |= CSR_INT_BIT_FH_TX;
1646                 /* FH finished to write, send event */
1647                 priv->ucode_write_complete = 1;
1648                 wake_up_interruptible(&priv->wait_command_queue);
1649         }
1650
1651         if (inta & ~handled)
1652                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1653
1654         if (inta & ~CSR_INI_SET_MASK) {
1655                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1656                          inta & ~CSR_INI_SET_MASK);
1657                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1658         }
1659
1660         /* Re-enable all interrupts */
1661         /* only Re-enable if diabled by irq */
1662         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1663                 iwl4965_enable_interrupts(priv);
1664
1665 #ifdef CONFIG_IWLWIFI_DEBUG
1666         if (priv->debug_level & (IWL_DL_ISR)) {
1667                 inta = iwl_read32(priv, CSR_INT);
1668                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1669                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1670                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1671                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1672         }
1673 #endif
1674         spin_unlock_irqrestore(&priv->lock, flags);
1675 }
1676
1677 static irqreturn_t iwl4965_isr(int irq, void *data)
1678 {
1679         struct iwl_priv *priv = data;
1680         u32 inta, inta_mask;
1681         u32 inta_fh;
1682         if (!priv)
1683                 return IRQ_NONE;
1684
1685         spin_lock(&priv->lock);
1686
1687         /* Disable (but don't clear!) interrupts here to avoid
1688          *    back-to-back ISRs and sporadic interrupts from our NIC.
1689          * If we have something to service, the tasklet will re-enable ints.
1690          * If we *don't* have something, we'll re-enable before leaving here. */
1691         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1692         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1693
1694         /* Discover which interrupts are active/pending */
1695         inta = iwl_read32(priv, CSR_INT);
1696         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1697
1698         /* Ignore interrupt if there's nothing in NIC to service.
1699          * This may be due to IRQ shared with another device,
1700          * or due to sporadic interrupts thrown from our NIC. */
1701         if (!inta && !inta_fh) {
1702                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1703                 goto none;
1704         }
1705
1706         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1707                 /* Hardware disappeared. It might have already raised
1708                  * an interrupt */
1709                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1710                 goto unplugged;
1711         }
1712
1713         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1714                       inta, inta_mask, inta_fh);
1715
1716         inta &= ~CSR_INT_BIT_SCD;
1717
1718         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1719         if (likely(inta || inta_fh))
1720                 tasklet_schedule(&priv->irq_tasklet);
1721
1722  unplugged:
1723         spin_unlock(&priv->lock);
1724         return IRQ_HANDLED;
1725
1726  none:
1727         /* re-enable interrupts here since we don't have anything to service. */
1728         /* only Re-enable if diabled by irq */
1729         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1730                 iwl4965_enable_interrupts(priv);
1731         spin_unlock(&priv->lock);
1732         return IRQ_NONE;
1733 }
1734
1735 /******************************************************************************
1736  *
1737  * uCode download functions
1738  *
1739  ******************************************************************************/
1740
1741 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1742 {
1743         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1744         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1745         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1746         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1747         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1748         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1749 }
1750
1751 static void iwl4965_nic_start(struct iwl_priv *priv)
1752 {
1753         /* Remove all resets to allow NIC to operate */
1754         iwl_write32(priv, CSR_RESET, 0);
1755 }
1756
1757
1758 /**
1759  * iwl4965_read_ucode - Read uCode images from disk file.
1760  *
1761  * Copy into buffers for card to fetch via bus-mastering
1762  */
1763 static int iwl4965_read_ucode(struct iwl_priv *priv)
1764 {
1765         struct iwl_ucode *ucode;
1766         int ret;
1767         const struct firmware *ucode_raw;
1768         const char *name = priv->cfg->fw_name;
1769         u8 *src;
1770         size_t len;
1771         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1772
1773         /* Ask kernel firmware_class module to get the boot firmware off disk.
1774          * request_firmware() is synchronous, file is in memory on return. */
1775         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1776         if (ret < 0) {
1777                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1778                                         name, ret);
1779                 goto error;
1780         }
1781
1782         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1783                        name, ucode_raw->size);
1784
1785         /* Make sure that we got at least our header! */
1786         if (ucode_raw->size < sizeof(*ucode)) {
1787                 IWL_ERROR("File size way too small!\n");
1788                 ret = -EINVAL;
1789                 goto err_release;
1790         }
1791
1792         /* Data from ucode file:  header followed by uCode images */
1793         ucode = (void *)ucode_raw->data;
1794
1795         ver = le32_to_cpu(ucode->ver);
1796         inst_size = le32_to_cpu(ucode->inst_size);
1797         data_size = le32_to_cpu(ucode->data_size);
1798         init_size = le32_to_cpu(ucode->init_size);
1799         init_data_size = le32_to_cpu(ucode->init_data_size);
1800         boot_size = le32_to_cpu(ucode->boot_size);
1801
1802         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1803         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1804                        inst_size);
1805         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1806                        data_size);
1807         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1808                        init_size);
1809         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1810                        init_data_size);
1811         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1812                        boot_size);
1813
1814         /* Verify size of file vs. image size info in file's header */
1815         if (ucode_raw->size < sizeof(*ucode) +
1816                 inst_size + data_size + init_size +
1817                 init_data_size + boot_size) {
1818
1819                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1820                                (int)ucode_raw->size);
1821                 ret = -EINVAL;
1822                 goto err_release;
1823         }
1824
1825         /* Verify that uCode images will fit in card's SRAM */
1826         if (inst_size > priv->hw_params.max_inst_size) {
1827                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1828                                inst_size);
1829                 ret = -EINVAL;
1830                 goto err_release;
1831         }
1832
1833         if (data_size > priv->hw_params.max_data_size) {
1834                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1835                                 data_size);
1836                 ret = -EINVAL;
1837                 goto err_release;
1838         }
1839         if (init_size > priv->hw_params.max_inst_size) {
1840                 IWL_DEBUG_INFO
1841                     ("uCode init instr len %d too large to fit in\n",
1842                       init_size);
1843                 ret = -EINVAL;
1844                 goto err_release;
1845         }
1846         if (init_data_size > priv->hw_params.max_data_size) {
1847                 IWL_DEBUG_INFO
1848                     ("uCode init data len %d too large to fit in\n",
1849                       init_data_size);
1850                 ret = -EINVAL;
1851                 goto err_release;
1852         }
1853         if (boot_size > priv->hw_params.max_bsm_size) {
1854                 IWL_DEBUG_INFO
1855                     ("uCode boot instr len %d too large to fit in\n",
1856                       boot_size);
1857                 ret = -EINVAL;
1858                 goto err_release;
1859         }
1860
1861         /* Allocate ucode buffers for card's bus-master loading ... */
1862
1863         /* Runtime instructions and 2 copies of data:
1864          * 1) unmodified from disk
1865          * 2) backup cache for save/restore during power-downs */
1866         priv->ucode_code.len = inst_size;
1867         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1868
1869         priv->ucode_data.len = data_size;
1870         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1871
1872         priv->ucode_data_backup.len = data_size;
1873         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1874
1875         /* Initialization instructions and data */
1876         if (init_size && init_data_size) {
1877                 priv->ucode_init.len = init_size;
1878                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1879
1880                 priv->ucode_init_data.len = init_data_size;
1881                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1882
1883                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1884                         goto err_pci_alloc;
1885         }
1886
1887         /* Bootstrap (instructions only, no data) */
1888         if (boot_size) {
1889                 priv->ucode_boot.len = boot_size;
1890                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1891
1892                 if (!priv->ucode_boot.v_addr)
1893                         goto err_pci_alloc;
1894         }
1895
1896         /* Copy images into buffers for card's bus-master reads ... */
1897
1898         /* Runtime instructions (first block of data in file) */
1899         src = &ucode->data[0];
1900         len = priv->ucode_code.len;
1901         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1902         memcpy(priv->ucode_code.v_addr, src, len);
1903         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1904                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1905
1906         /* Runtime data (2nd block)
1907          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1908         src = &ucode->data[inst_size];
1909         len = priv->ucode_data.len;
1910         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1911         memcpy(priv->ucode_data.v_addr, src, len);
1912         memcpy(priv->ucode_data_backup.v_addr, src, len);
1913
1914         /* Initialization instructions (3rd block) */
1915         if (init_size) {
1916                 src = &ucode->data[inst_size + data_size];
1917                 len = priv->ucode_init.len;
1918                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1919                                 len);
1920                 memcpy(priv->ucode_init.v_addr, src, len);
1921         }
1922
1923         /* Initialization data (4th block) */
1924         if (init_data_size) {
1925                 src = &ucode->data[inst_size + data_size + init_size];
1926                 len = priv->ucode_init_data.len;
1927                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1928                                len);
1929                 memcpy(priv->ucode_init_data.v_addr, src, len);
1930         }
1931
1932         /* Bootstrap instructions (5th block) */
1933         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1934         len = priv->ucode_boot.len;
1935         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1936         memcpy(priv->ucode_boot.v_addr, src, len);
1937
1938         /* We have our copies now, allow OS release its copies */
1939         release_firmware(ucode_raw);
1940         return 0;
1941
1942  err_pci_alloc:
1943         IWL_ERROR("failed to allocate pci memory\n");
1944         ret = -ENOMEM;
1945         iwl4965_dealloc_ucode_pci(priv);
1946
1947  err_release:
1948         release_firmware(ucode_raw);
1949
1950  error:
1951         return ret;
1952 }
1953
1954 /**
1955  * iwl_alive_start - called after REPLY_ALIVE notification received
1956  *                   from protocol/runtime uCode (initialization uCode's
1957  *                   Alive gets handled by iwl_init_alive_start()).
1958  */
1959 static void iwl_alive_start(struct iwl_priv *priv)
1960 {
1961         int ret = 0;
1962
1963         IWL_DEBUG_INFO("Runtime Alive received.\n");
1964
1965         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1966                 /* We had an error bringing up the hardware, so take it
1967                  * all the way back down so we can try again */
1968                 IWL_DEBUG_INFO("Alive failed.\n");
1969                 goto restart;
1970         }
1971
1972         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1973          * This is a paranoid check, because we would not have gotten the
1974          * "runtime" alive if code weren't properly loaded.  */
1975         if (iwl_verify_ucode(priv)) {
1976                 /* Runtime instruction load was bad;
1977                  * take it all the way back down so we can try again */
1978                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1979                 goto restart;
1980         }
1981
1982         iwl_clear_stations_table(priv);
1983         ret = priv->cfg->ops->lib->alive_notify(priv);
1984         if (ret) {
1985                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1986                             ret);
1987                 goto restart;
1988         }
1989
1990         /* After the ALIVE response, we can send host commands to 4965 uCode */
1991         set_bit(STATUS_ALIVE, &priv->status);
1992
1993         if (iwl_is_rfkill(priv))
1994                 return;
1995
1996         ieee80211_wake_queues(priv->hw);
1997
1998         priv->active_rate = priv->rates_mask;
1999         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2000
2001         if (iwl_is_associated(priv)) {
2002                 struct iwl_rxon_cmd *active_rxon =
2003                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2004
2005                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2006                        sizeof(priv->staging_rxon));
2007                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2008         } else {
2009                 /* Initialize our rx_config data */
2010                 iwl4965_connection_init_rx_config(priv);
2011                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2012         }
2013
2014         /* Configure Bluetooth device coexistence support */
2015         iwl4965_send_bt_config(priv);
2016
2017         iwl_reset_run_time_calib(priv);
2018
2019         /* Configure the adapter for unassociated operation */
2020         iwl4965_commit_rxon(priv);
2021
2022         /* At this point, the NIC is initialized and operational */
2023         iwl_rf_kill_ct_config(priv);
2024
2025         iwl_leds_register(priv);
2026
2027         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2028         set_bit(STATUS_READY, &priv->status);
2029         wake_up_interruptible(&priv->wait_command_queue);
2030
2031         if (priv->error_recovering)
2032                 iwl4965_error_recovery(priv);
2033
2034         iwl_power_update_mode(priv, 1);
2035         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2036
2037         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2038                 iwl4965_set_mode(priv, priv->iw_mode);
2039
2040         return;
2041
2042  restart:
2043         queue_work(priv->workqueue, &priv->restart);
2044 }
2045
2046 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2047
2048 static void __iwl4965_down(struct iwl_priv *priv)
2049 {
2050         unsigned long flags;
2051         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2052
2053         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2054
2055         if (!exit_pending)
2056                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2057
2058         iwl_leds_unregister(priv);
2059
2060         iwl_clear_stations_table(priv);
2061
2062         /* Unblock any waiting calls */
2063         wake_up_interruptible_all(&priv->wait_command_queue);
2064
2065         /* Wipe out the EXIT_PENDING status bit if we are not actually
2066          * exiting the module */
2067         if (!exit_pending)
2068                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2069
2070         /* stop and reset the on-board processor */
2071         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2072
2073         /* tell the device to stop sending interrupts */
2074         spin_lock_irqsave(&priv->lock, flags);
2075         iwl4965_disable_interrupts(priv);
2076         spin_unlock_irqrestore(&priv->lock, flags);
2077         iwl_synchronize_irq(priv);
2078
2079         if (priv->mac80211_registered)
2080                 ieee80211_stop_queues(priv->hw);
2081
2082         /* If we have not previously called iwl4965_init() then
2083          * clear all bits but the RF Kill and SUSPEND bits and return */
2084         if (!iwl_is_init(priv)) {
2085                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2086                                         STATUS_RF_KILL_HW |
2087                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2088                                         STATUS_RF_KILL_SW |
2089                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2090                                         STATUS_GEO_CONFIGURED |
2091                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2092                                         STATUS_IN_SUSPEND |
2093                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2094                                         STATUS_EXIT_PENDING;
2095                 goto exit;
2096         }
2097
2098         /* ...otherwise clear out all the status bits but the RF Kill and
2099          * SUSPEND bits and continue taking the NIC down. */
2100         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2101                                 STATUS_RF_KILL_HW |
2102                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2103                                 STATUS_RF_KILL_SW |
2104                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2105                                 STATUS_GEO_CONFIGURED |
2106                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2107                                 STATUS_IN_SUSPEND |
2108                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2109                                 STATUS_FW_ERROR |
2110                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2111                                 STATUS_EXIT_PENDING;
2112
2113         spin_lock_irqsave(&priv->lock, flags);
2114         iwl_clear_bit(priv, CSR_GP_CNTRL,
2115                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2116         spin_unlock_irqrestore(&priv->lock, flags);
2117
2118         iwl_txq_ctx_stop(priv);
2119         iwl_rxq_stop(priv);
2120
2121         spin_lock_irqsave(&priv->lock, flags);
2122         if (!iwl_grab_nic_access(priv)) {
2123                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2124                                          APMG_CLK_VAL_DMA_CLK_RQT);
2125                 iwl_release_nic_access(priv);
2126         }
2127         spin_unlock_irqrestore(&priv->lock, flags);
2128
2129         udelay(5);
2130
2131         /* FIXME: apm_ops.suspend(priv) */
2132         priv->cfg->ops->lib->apm_ops.reset(priv);
2133         priv->cfg->ops->lib->free_shared_mem(priv);
2134
2135  exit:
2136         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2137
2138         if (priv->ibss_beacon)
2139                 dev_kfree_skb(priv->ibss_beacon);
2140         priv->ibss_beacon = NULL;
2141
2142         /* clear out any free frames */
2143         iwl_clear_free_frames(priv);
2144 }
2145
2146 static void iwl4965_down(struct iwl_priv *priv)
2147 {
2148         mutex_lock(&priv->mutex);
2149         __iwl4965_down(priv);
2150         mutex_unlock(&priv->mutex);
2151
2152         iwl_cancel_deferred_work(priv);
2153 }
2154
2155 #define MAX_HW_RESTARTS 5
2156
2157 static int __iwl4965_up(struct iwl_priv *priv)
2158 {
2159         int i;
2160         int ret;
2161
2162         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2163                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2164                 return -EIO;
2165         }
2166
2167         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2168                 IWL_ERROR("ucode not available for device bringup\n");
2169                 return -EIO;
2170         }
2171
2172         /* If platform's RF_KILL switch is NOT set to KILL */
2173         if (iwl_read32(priv, CSR_GP_CNTRL) &
2174                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2175                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2176         else
2177                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2178
2179         if (!test_bit(STATUS_IN_SUSPEND, &priv->status) &&
2180             iwl_is_rfkill(priv)) {
2181                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2182                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2183                 return -ENODEV;
2184         }
2185
2186         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2187
2188         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2189         if (ret) {
2190                 IWL_ERROR("Unable to allocate shared memory\n");
2191                 return ret;
2192         }
2193
2194         ret = iwl_hw_nic_init(priv);
2195         if (ret) {
2196                 IWL_ERROR("Unable to init nic\n");
2197                 return ret;
2198         }
2199
2200         /* make sure rfkill handshake bits are cleared */
2201         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2202         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2203                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2204
2205         /* clear (again), then enable host interrupts */
2206         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2207         iwl4965_enable_interrupts(priv);
2208
2209         /* really make sure rfkill handshake bits are cleared */
2210         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2211         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2212
2213         /* Copy original ucode data image from disk into backup cache.
2214          * This will be used to initialize the on-board processor's
2215          * data SRAM for a clean start when the runtime program first loads. */
2216         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2217                priv->ucode_data.len);
2218
2219         /* We return success when we resume from suspend and rf_kill is on. */
2220         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2221             test_bit(STATUS_RF_KILL_SW, &priv->status))
2222                 return 0;
2223
2224         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2225
2226                 iwl_clear_stations_table(priv);
2227
2228                 /* load bootstrap state machine,
2229                  * load bootstrap program into processor's memory,
2230                  * prepare to load the "initialize" uCode */
2231                 ret = priv->cfg->ops->lib->load_ucode(priv);
2232
2233                 if (ret) {
2234                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2235                         continue;
2236                 }
2237
2238                 /* Clear out the uCode error bit if it is set */
2239                 clear_bit(STATUS_FW_ERROR, &priv->status);
2240
2241                 /* start card; "initialize" will load runtime ucode */
2242                 iwl4965_nic_start(priv);
2243
2244                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2245
2246                 return 0;
2247         }
2248
2249         set_bit(STATUS_EXIT_PENDING, &priv->status);
2250         __iwl4965_down(priv);
2251         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2252
2253         /* tried to restart and config the device for as long as our
2254          * patience could withstand */
2255         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2256         return -EIO;
2257 }
2258
2259
2260 /*****************************************************************************
2261  *
2262  * Workqueue callbacks
2263  *
2264  *****************************************************************************/
2265
2266 static void iwl_bg_init_alive_start(struct work_struct *data)
2267 {
2268         struct iwl_priv *priv =
2269             container_of(data, struct iwl_priv, init_alive_start.work);
2270
2271         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2272                 return;
2273
2274         mutex_lock(&priv->mutex);
2275         priv->cfg->ops->lib->init_alive_start(priv);
2276         mutex_unlock(&priv->mutex);
2277 }
2278
2279 static void iwl_bg_alive_start(struct work_struct *data)
2280 {
2281         struct iwl_priv *priv =
2282             container_of(data, struct iwl_priv, alive_start.work);
2283
2284         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2285                 return;
2286
2287         mutex_lock(&priv->mutex);
2288         iwl_alive_start(priv);
2289         mutex_unlock(&priv->mutex);
2290 }
2291
2292 static void iwl4965_bg_rf_kill(struct work_struct *work)
2293 {
2294         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2295
2296         wake_up_interruptible(&priv->wait_command_queue);
2297
2298         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2299                 return;
2300
2301         mutex_lock(&priv->mutex);
2302
2303         if (!iwl_is_rfkill(priv)) {
2304                 IWL_DEBUG(IWL_DL_RF_KILL,
2305                           "HW and/or SW RF Kill no longer active, restarting "
2306                           "device\n");
2307                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2308                         queue_work(priv->workqueue, &priv->restart);
2309         } else {
2310                 /* make sure mac80211 stop sending Tx frame */
2311                 if (priv->mac80211_registered)
2312                         ieee80211_stop_queues(priv->hw);
2313
2314                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2315                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2316                                           "disabled by SW switch\n");
2317                 else
2318                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2319                                     "Kill switch must be turned off for "
2320                                     "wireless networking to work.\n");
2321         }
2322         mutex_unlock(&priv->mutex);
2323         iwl_rfkill_set_hw_state(priv);
2324 }
2325
2326 static void iwl4965_bg_set_monitor(struct work_struct *work)
2327 {
2328         struct iwl_priv *priv = container_of(work,
2329                                 struct iwl_priv, set_monitor);
2330         int ret;
2331
2332         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2333
2334         mutex_lock(&priv->mutex);
2335
2336         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2337
2338         if (ret) {
2339                 if (ret == -EAGAIN)
2340                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2341                 else
2342                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2343         }
2344
2345         mutex_unlock(&priv->mutex);
2346 }
2347
2348 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2349 {
2350         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2351                         run_time_calib_work);
2352
2353         mutex_lock(&priv->mutex);
2354
2355         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2356             test_bit(STATUS_SCANNING, &priv->status)) {
2357                 mutex_unlock(&priv->mutex);
2358                 return;
2359         }
2360
2361         if (priv->start_calib) {
2362                 iwl_chain_noise_calibration(priv, &priv->statistics);
2363
2364                 iwl_sensitivity_calibration(priv, &priv->statistics);
2365         }
2366
2367         mutex_unlock(&priv->mutex);
2368         return;
2369 }
2370
2371 static void iwl4965_bg_up(struct work_struct *data)
2372 {
2373         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2374
2375         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2376                 return;
2377
2378         mutex_lock(&priv->mutex);
2379         __iwl4965_up(priv);
2380         mutex_unlock(&priv->mutex);
2381         iwl_rfkill_set_hw_state(priv);
2382 }
2383
2384 static void iwl4965_bg_restart(struct work_struct *data)
2385 {
2386         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2387
2388         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2389                 return;
2390
2391         iwl4965_down(priv);
2392         queue_work(priv->workqueue, &priv->up);
2393 }
2394
2395 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2396 {
2397         struct iwl_priv *priv =
2398             container_of(data, struct iwl_priv, rx_replenish);
2399
2400         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2401                 return;
2402
2403         mutex_lock(&priv->mutex);
2404         iwl_rx_replenish(priv);
2405         mutex_unlock(&priv->mutex);
2406 }
2407
2408 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2409
2410 static void iwl4965_post_associate(struct iwl_priv *priv)
2411 {
2412         struct ieee80211_conf *conf = NULL;
2413         int ret = 0;
2414         DECLARE_MAC_BUF(mac);
2415         unsigned long flags;
2416
2417         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2418                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2419                 return;
2420         }
2421
2422         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2423                         priv->assoc_id,
2424                         print_mac(mac, priv->active_rxon.bssid_addr));
2425
2426
2427         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2428                 return;
2429
2430
2431         if (!priv->vif || !priv->is_open)
2432                 return;
2433
2434         iwl_scan_cancel_timeout(priv, 200);
2435
2436         conf = ieee80211_get_hw_conf(priv->hw);
2437
2438         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2439         iwl4965_commit_rxon(priv);
2440
2441         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2442         iwl4965_setup_rxon_timing(priv);
2443         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2444                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2445         if (ret)
2446                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2447                             "Attempting to continue.\n");
2448
2449         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2450
2451         if (priv->current_ht_config.is_ht)
2452                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2453
2454         iwl_set_rxon_chain(priv);
2455         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2456
2457         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2458                         priv->assoc_id, priv->beacon_int);
2459
2460         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2461                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2462         else
2463                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2464
2465         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2466                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2467                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2468                 else
2469                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2470
2471                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2472                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2473
2474         }
2475
2476         iwl4965_commit_rxon(priv);
2477
2478         switch (priv->iw_mode) {
2479         case IEEE80211_IF_TYPE_STA:
2480                 break;
2481
2482         case IEEE80211_IF_TYPE_IBSS:
2483
2484                 /* assume default assoc id */
2485                 priv->assoc_id = 1;
2486
2487                 iwl_rxon_add_station(priv, priv->bssid, 0);
2488                 iwl4965_send_beacon_cmd(priv);
2489
2490                 break;
2491
2492         default:
2493                 IWL_ERROR("%s Should not be called in %d mode\n",
2494                                 __FUNCTION__, priv->iw_mode);
2495                 break;
2496         }
2497
2498         /* Enable Rx differential gain and sensitivity calibrations */
2499         iwl_chain_noise_reset(priv);
2500         priv->start_calib = 1;
2501
2502         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2503                 priv->assoc_station_added = 1;
2504
2505         spin_lock_irqsave(&priv->lock, flags);
2506         iwl_activate_qos(priv, 0);
2507         spin_unlock_irqrestore(&priv->lock, flags);
2508
2509         iwl_power_update_mode(priv, 0);
2510         /* we have just associated, don't start scan too early */
2511         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2512 }
2513
2514 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2515
2516 static void iwl_bg_scan_completed(struct work_struct *work)
2517 {
2518         struct iwl_priv *priv =
2519             container_of(work, struct iwl_priv, scan_completed);
2520
2521         IWL_DEBUG_SCAN("SCAN complete scan\n");
2522
2523         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2524                 return;
2525
2526         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2527                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2528
2529         ieee80211_scan_completed(priv->hw);
2530
2531         /* Since setting the TXPOWER may have been deferred while
2532          * performing the scan, fire one off */
2533         mutex_lock(&priv->mutex);
2534         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2535         mutex_unlock(&priv->mutex);
2536 }
2537
2538 /*****************************************************************************
2539  *
2540  * mac80211 entry point functions
2541  *
2542  *****************************************************************************/
2543
2544 #define UCODE_READY_TIMEOUT     (4 * HZ)
2545
2546 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2547 {
2548         struct iwl_priv *priv = hw->priv;
2549         int ret;
2550
2551         IWL_DEBUG_MAC80211("enter\n");
2552
2553         if (pci_enable_device(priv->pci_dev)) {
2554                 IWL_ERROR("Fail to pci_enable_device\n");
2555                 return -ENODEV;
2556         }
2557         pci_restore_state(priv->pci_dev);
2558         pci_enable_msi(priv->pci_dev);
2559
2560         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2561                           DRV_NAME, priv);
2562         if (ret) {
2563                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2564                 goto out_disable_msi;
2565         }
2566
2567         /* we should be verifying the device is ready to be opened */
2568         mutex_lock(&priv->mutex);
2569
2570         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2571         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2572          * ucode filename and max sizes are card-specific. */
2573
2574         if (!priv->ucode_code.len) {
2575                 ret = iwl4965_read_ucode(priv);
2576                 if (ret) {
2577                         IWL_ERROR("Could not read microcode: %d\n", ret);
2578                         mutex_unlock(&priv->mutex);
2579                         goto out_release_irq;
2580                 }
2581         }
2582
2583         ret = __iwl4965_up(priv);
2584
2585         mutex_unlock(&priv->mutex);
2586
2587         iwl_rfkill_set_hw_state(priv);
2588
2589         if (ret)
2590                 goto out_release_irq;
2591
2592         IWL_DEBUG_INFO("Start UP work done.\n");
2593
2594         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2595                 return 0;
2596
2597         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2598          * mac80211 will not be run successfully. */
2599         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2600                         test_bit(STATUS_READY, &priv->status),
2601                         UCODE_READY_TIMEOUT);
2602         if (!ret) {
2603                 if (!test_bit(STATUS_READY, &priv->status)) {
2604                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2605                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2606                         ret = -ETIMEDOUT;
2607                         goto out_release_irq;
2608                 }
2609         }
2610
2611         priv->is_open = 1;
2612         IWL_DEBUG_MAC80211("leave\n");
2613         return 0;
2614
2615 out_release_irq:
2616         free_irq(priv->pci_dev->irq, priv);
2617 out_disable_msi:
2618         pci_disable_msi(priv->pci_dev);
2619         pci_disable_device(priv->pci_dev);
2620         priv->is_open = 0;
2621         IWL_DEBUG_MAC80211("leave - failed\n");
2622         return ret;
2623 }
2624
2625 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2626 {
2627         struct iwl_priv *priv = hw->priv;
2628
2629         IWL_DEBUG_MAC80211("enter\n");
2630
2631         if (!priv->is_open) {
2632                 IWL_DEBUG_MAC80211("leave - skip\n");
2633                 return;
2634         }
2635
2636         priv->is_open = 0;
2637
2638         if (iwl_is_ready_rf(priv)) {
2639                 /* stop mac, cancel any scan request and clear
2640                  * RXON_FILTER_ASSOC_MSK BIT
2641                  */
2642                 mutex_lock(&priv->mutex);
2643                 iwl_scan_cancel_timeout(priv, 100);
2644                 mutex_unlock(&priv->mutex);
2645         }
2646
2647         iwl4965_down(priv);
2648
2649         flush_workqueue(priv->workqueue);
2650         free_irq(priv->pci_dev->irq, priv);
2651         pci_disable_msi(priv->pci_dev);
2652         pci_save_state(priv->pci_dev);
2653         pci_disable_device(priv->pci_dev);
2654
2655         IWL_DEBUG_MAC80211("leave\n");
2656 }
2657
2658 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2659 {
2660         struct iwl_priv *priv = hw->priv;
2661
2662         IWL_DEBUG_MAC80211("enter\n");
2663
2664         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2665                 IWL_DEBUG_MAC80211("leave - monitor\n");
2666                 dev_kfree_skb_any(skb);
2667                 return 0;
2668         }
2669
2670         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2671                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2672
2673         if (iwl_tx_skb(priv, skb))
2674                 dev_kfree_skb_any(skb);
2675
2676         IWL_DEBUG_MAC80211("leave\n");
2677         return 0;
2678 }
2679
2680 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2681                                  struct ieee80211_if_init_conf *conf)
2682 {
2683         struct iwl_priv *priv = hw->priv;
2684         unsigned long flags;
2685         DECLARE_MAC_BUF(mac);
2686
2687         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2688
2689         if (priv->vif) {
2690                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2691                 return -EOPNOTSUPP;
2692         }
2693
2694         spin_lock_irqsave(&priv->lock, flags);
2695         priv->vif = conf->vif;
2696
2697         spin_unlock_irqrestore(&priv->lock, flags);
2698
2699         mutex_lock(&priv->mutex);
2700
2701         if (conf->mac_addr) {
2702                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2703                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2704         }
2705
2706         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2707                 /* we are not ready, will run again when ready */
2708                 set_bit(STATUS_MODE_PENDING, &priv->status);
2709
2710         mutex_unlock(&priv->mutex);
2711
2712         IWL_DEBUG_MAC80211("leave\n");
2713         return 0;
2714 }
2715
2716 /**
2717  * iwl4965_mac_config - mac80211 config callback
2718  *
2719  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2720  * be set inappropriately and the driver currently sets the hardware up to
2721  * use it whenever needed.
2722  */
2723 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2724 {
2725         struct iwl_priv *priv = hw->priv;
2726         const struct iwl_channel_info *ch_info;
2727         unsigned long flags;
2728         int ret = 0;
2729         u16 channel;
2730
2731         mutex_lock(&priv->mutex);
2732         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2733
2734         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2735
2736         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2737                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2738                 goto out;
2739         }
2740
2741         if (!conf->radio_enabled)
2742                 iwl_radio_kill_sw_disable_radio(priv);
2743
2744         if (!iwl_is_ready(priv)) {
2745                 IWL_DEBUG_MAC80211("leave - not ready\n");
2746                 ret = -EIO;
2747                 goto out;
2748         }
2749
2750         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2751                      test_bit(STATUS_SCANNING, &priv->status))) {
2752                 IWL_DEBUG_MAC80211("leave - scanning\n");
2753                 set_bit(STATUS_CONF_PENDING, &priv->status);
2754                 mutex_unlock(&priv->mutex);
2755                 return 0;
2756         }
2757
2758         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2759         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2760         if (!is_channel_valid(ch_info)) {
2761                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2762                 ret = -EINVAL;
2763                 goto out;
2764         }
2765
2766         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2767             !is_channel_ibss(ch_info)) {
2768                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2769                         conf->channel->hw_value, conf->channel->band);
2770                 ret = -EINVAL;
2771                 goto out;
2772         }
2773
2774         spin_lock_irqsave(&priv->lock, flags);
2775
2776         /* if we are switching from ht to 2.4 clear flags
2777          * from any ht related info since 2.4 does not
2778          * support ht */
2779         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2780 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2781             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2782 #endif
2783         )
2784                 priv->staging_rxon.flags = 0;
2785
2786         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2787
2788         iwl_set_flags_for_band(priv, conf->channel->band);
2789
2790         /* The list of supported rates and rate mask can be different
2791          * for each band; since the band may have changed, reset
2792          * the rate mask to what mac80211 lists */
2793         iwl4965_set_rate(priv);
2794
2795         spin_unlock_irqrestore(&priv->lock, flags);
2796
2797 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2798         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2799                 iwl4965_hw_channel_switch(priv, conf->channel);
2800                 goto out;
2801         }
2802 #endif
2803
2804         if (!conf->radio_enabled) {
2805                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2806                 goto out;
2807         }
2808
2809         if (iwl_is_rfkill(priv)) {
2810                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2811                 ret = -EIO;
2812                 goto out;
2813         }
2814
2815         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2816                            priv->tx_power_user_lmt, conf->power_level);
2817
2818         iwl_set_tx_power(priv, conf->power_level, false);
2819
2820         iwl4965_set_rate(priv);
2821
2822         if (memcmp(&priv->active_rxon,
2823                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2824                 iwl4965_commit_rxon(priv);
2825         else
2826                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2827
2828         IWL_DEBUG_MAC80211("leave\n");
2829
2830 out:
2831         clear_bit(STATUS_CONF_PENDING, &priv->status);
2832         mutex_unlock(&priv->mutex);
2833         return ret;
2834 }
2835
2836 static void iwl4965_config_ap(struct iwl_priv *priv)
2837 {
2838         int ret = 0;
2839         unsigned long flags;
2840
2841         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2842                 return;
2843
2844         /* The following should be done only at AP bring up */
2845         if (!(iwl_is_associated(priv))) {
2846
2847                 /* RXON - unassoc (to set timing command) */
2848                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2849                 iwl4965_commit_rxon(priv);
2850
2851                 /* RXON Timing */
2852                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2853                 iwl4965_setup_rxon_timing(priv);
2854                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2855                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2856                 if (ret)
2857                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2858                                         "Attempting to continue.\n");
2859
2860                 iwl_set_rxon_chain(priv);
2861
2862                 /* FIXME: what should be the assoc_id for AP? */
2863                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2864                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2865                         priv->staging_rxon.flags |=
2866                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2867                 else
2868                         priv->staging_rxon.flags &=
2869                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2870
2871                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2872                         if (priv->assoc_capability &
2873                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2874                                 priv->staging_rxon.flags |=
2875                                         RXON_FLG_SHORT_SLOT_MSK;
2876                         else
2877                                 priv->staging_rxon.flags &=
2878                                         ~RXON_FLG_SHORT_SLOT_MSK;
2879
2880                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2881                                 priv->staging_rxon.flags &=
2882                                         ~RXON_FLG_SHORT_SLOT_MSK;
2883                 }
2884                 /* restore RXON assoc */
2885                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2886                 iwl4965_commit_rxon(priv);
2887                 spin_lock_irqsave(&priv->lock, flags);
2888                 iwl_activate_qos(priv, 1);
2889                 spin_unlock_irqrestore(&priv->lock, flags);
2890                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2891         }
2892         iwl4965_send_beacon_cmd(priv);
2893
2894         /* FIXME - we need to add code here to detect a totally new
2895          * configuration, reset the AP, unassoc, rxon timing, assoc,
2896          * clear sta table, add BCAST sta... */
2897 }
2898
2899 /* temporary */
2900 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2901
2902 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2903                                         struct ieee80211_vif *vif,
2904                                     struct ieee80211_if_conf *conf)
2905 {
2906         struct iwl_priv *priv = hw->priv;
2907         DECLARE_MAC_BUF(mac);
2908         unsigned long flags;
2909         int rc;
2910
2911         if (conf == NULL)
2912                 return -EIO;
2913
2914         if (priv->vif != vif) {
2915                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2916                 return 0;
2917         }
2918
2919         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2920             conf->changed & IEEE80211_IFCC_BEACON) {
2921                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2922                 if (!beacon)
2923                         return -ENOMEM;
2924                 rc = iwl4965_mac_beacon_update(hw, beacon);
2925                 if (rc)
2926                         return rc;
2927         }
2928
2929         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2930             (!conf->ssid_len)) {
2931                 IWL_DEBUG_MAC80211
2932                     ("Leaving in AP mode because HostAPD is not ready.\n");
2933                 return 0;
2934         }
2935
2936         if (!iwl_is_alive(priv))
2937                 return -EAGAIN;
2938
2939         mutex_lock(&priv->mutex);
2940
2941         if (conf->bssid)
2942                 IWL_DEBUG_MAC80211("bssid: %s\n",
2943                                    print_mac(mac, conf->bssid));
2944
2945 /*
2946  * very dubious code was here; the probe filtering flag is never set:
2947  *
2948         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2949             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2950  */
2951
2952         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2953                 if (!conf->bssid) {
2954                         conf->bssid = priv->mac_addr;
2955                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2956                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2957                                            print_mac(mac, conf->bssid));
2958                 }
2959                 if (priv->ibss_beacon)
2960                         dev_kfree_skb(priv->ibss_beacon);
2961
2962                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
2963         }
2964
2965         if (iwl_is_rfkill(priv))
2966                 goto done;
2967
2968         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2969             !is_multicast_ether_addr(conf->bssid)) {
2970                 /* If there is currently a HW scan going on in the background
2971                  * then we need to cancel it else the RXON below will fail. */
2972                 if (iwl_scan_cancel_timeout(priv, 100)) {
2973                         IWL_WARNING("Aborted scan still in progress "
2974                                     "after 100ms\n");
2975                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2976                         mutex_unlock(&priv->mutex);
2977                         return -EAGAIN;
2978                 }
2979                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2980
2981                 /* TODO: Audit driver for usage of these members and see
2982                  * if mac80211 deprecates them (priv->bssid looks like it
2983                  * shouldn't be there, but I haven't scanned the IBSS code
2984                  * to verify) - jpk */
2985                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2986
2987                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2988                         iwl4965_config_ap(priv);
2989                 else {
2990                         rc = iwl4965_commit_rxon(priv);
2991                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2992                                 iwl_rxon_add_station(
2993                                         priv, priv->active_rxon.bssid_addr, 1);
2994                 }
2995
2996         } else {
2997                 iwl_scan_cancel_timeout(priv, 100);
2998                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2999                 iwl4965_commit_rxon(priv);
3000         }
3001
3002  done:
3003         spin_lock_irqsave(&priv->lock, flags);
3004         if (!conf->ssid_len)
3005                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3006         else
3007                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3008
3009         priv->essid_len = conf->ssid_len;
3010         spin_unlock_irqrestore(&priv->lock, flags);
3011
3012         IWL_DEBUG_MAC80211("leave\n");
3013         mutex_unlock(&priv->mutex);
3014
3015         return 0;
3016 }
3017
3018 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3019                                  unsigned int changed_flags,
3020                                  unsigned int *total_flags,
3021                                  int mc_count, struct dev_addr_list *mc_list)
3022 {
3023         struct iwl_priv *priv = hw->priv;
3024
3025         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3026                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3027                                    IEEE80211_IF_TYPE_MNTR,
3028                                    changed_flags, *total_flags);
3029                 /* queue work 'cuz mac80211 is holding a lock which
3030                  * prevents us from issuing (synchronous) f/w cmds */
3031                 queue_work(priv->workqueue, &priv->set_monitor);
3032         }
3033         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3034                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3035 }
3036
3037 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3038                                      struct ieee80211_if_init_conf *conf)
3039 {
3040         struct iwl_priv *priv = hw->priv;
3041
3042         IWL_DEBUG_MAC80211("enter\n");
3043
3044         mutex_lock(&priv->mutex);
3045
3046         if (iwl_is_ready_rf(priv)) {
3047                 iwl_scan_cancel_timeout(priv, 100);
3048                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3049                 iwl4965_commit_rxon(priv);
3050         }
3051         if (priv->vif == conf->vif) {
3052                 priv->vif = NULL;
3053                 memset(priv->bssid, 0, ETH_ALEN);
3054                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3055                 priv->essid_len = 0;
3056         }
3057         mutex_unlock(&priv->mutex);
3058
3059         IWL_DEBUG_MAC80211("leave\n");
3060
3061 }
3062
3063 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3064 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3065                                      struct ieee80211_vif *vif,
3066                                      struct ieee80211_bss_conf *bss_conf,
3067                                      u32 changes)
3068 {
3069         struct iwl_priv *priv = hw->priv;
3070
3071         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3072
3073         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3074                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3075                                    bss_conf->use_short_preamble);
3076                 if (bss_conf->use_short_preamble)
3077                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3078                 else
3079                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3080         }
3081
3082         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3083                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3084                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3085                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3086                 else
3087                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3088         }
3089
3090         if (changes & BSS_CHANGED_HT) {
3091                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3092                 iwl4965_ht_conf(priv, bss_conf);
3093                 iwl_set_rxon_chain(priv);
3094         }
3095
3096         if (changes & BSS_CHANGED_ASSOC) {
3097                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3098                 /* This should never happen as this function should
3099                  * never be called from interrupt context. */
3100                 if (WARN_ON_ONCE(in_interrupt()))
3101                         return;
3102                 if (bss_conf->assoc) {
3103                         priv->assoc_id = bss_conf->aid;
3104                         priv->beacon_int = bss_conf->beacon_int;
3105                         priv->timestamp = bss_conf->timestamp;
3106                         priv->assoc_capability = bss_conf->assoc_capability;
3107                         priv->next_scan_jiffies = jiffies +
3108                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3109                         mutex_lock(&priv->mutex);
3110                         iwl4965_post_associate(priv);
3111                         mutex_unlock(&priv->mutex);
3112                 } else {
3113                         priv->assoc_id = 0;
3114                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3115                 }
3116         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3117                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3118                         iwl_send_rxon_assoc(priv);
3119         }
3120
3121 }
3122
3123 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3124 {
3125         int rc = 0;
3126         unsigned long flags;
3127         struct iwl_priv *priv = hw->priv;
3128
3129         IWL_DEBUG_MAC80211("enter\n");
3130
3131         mutex_lock(&priv->mutex);
3132         spin_lock_irqsave(&priv->lock, flags);
3133
3134         if (!iwl_is_ready_rf(priv)) {
3135                 rc = -EIO;
3136                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3137                 goto out_unlock;
3138         }
3139
3140         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3141                 rc = -EIO;
3142                 IWL_ERROR("ERROR: APs don't scan\n");
3143                 goto out_unlock;
3144         }
3145
3146         /* we don't schedule scan within next_scan_jiffies period */
3147         if (priv->next_scan_jiffies &&
3148                         time_after(priv->next_scan_jiffies, jiffies)) {
3149                 rc = -EAGAIN;
3150                 goto out_unlock;
3151         }
3152         /* if we just finished scan ask for delay */
3153         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3154                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3155                 rc = -EAGAIN;
3156                 goto out_unlock;
3157         }
3158         if (len) {
3159                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3160                                iwl_escape_essid(ssid, len), (int)len);
3161
3162                 priv->one_direct_scan = 1;
3163                 priv->direct_ssid_len = (u8)
3164                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3165                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3166         } else
3167                 priv->one_direct_scan = 0;
3168
3169         rc = iwl_scan_initiate(priv);
3170
3171         IWL_DEBUG_MAC80211("leave\n");
3172
3173 out_unlock:
3174         spin_unlock_irqrestore(&priv->lock, flags);
3175         mutex_unlock(&priv->mutex);
3176
3177         return rc;
3178 }
3179
3180 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3181                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3182                         u32 iv32, u16 *phase1key)
3183 {
3184         struct iwl_priv *priv = hw->priv;
3185         u8 sta_id = IWL_INVALID_STATION;
3186         unsigned long flags;
3187         __le16 key_flags = 0;
3188         int i;
3189         DECLARE_MAC_BUF(mac);
3190
3191         IWL_DEBUG_MAC80211("enter\n");
3192
3193         sta_id = iwl_find_station(priv, addr);
3194         if (sta_id == IWL_INVALID_STATION) {
3195                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3196                                    print_mac(mac, addr));
3197                 return;
3198         }
3199
3200         iwl_scan_cancel_timeout(priv, 100);
3201
3202         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3203         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3204         key_flags &= ~STA_KEY_FLG_INVALID;
3205
3206         if (sta_id == priv->hw_params.bcast_sta_id)
3207                 key_flags |= STA_KEY_MULTICAST_MSK;
3208
3209         spin_lock_irqsave(&priv->sta_lock, flags);
3210
3211         priv->stations[sta_id].sta.key.key_flags = key_flags;
3212         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3213
3214         for (i = 0; i < 5; i++)
3215                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3216                         cpu_to_le16(phase1key[i]);
3217
3218         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3219         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3220
3221         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3222
3223         spin_unlock_irqrestore(&priv->sta_lock, flags);
3224
3225         IWL_DEBUG_MAC80211("leave\n");
3226 }
3227
3228 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3229                            const u8 *local_addr, const u8 *addr,
3230                            struct ieee80211_key_conf *key)
3231 {
3232         struct iwl_priv *priv = hw->priv;
3233         DECLARE_MAC_BUF(mac);
3234         int ret = 0;
3235         u8 sta_id = IWL_INVALID_STATION;
3236         u8 is_default_wep_key = 0;
3237
3238         IWL_DEBUG_MAC80211("enter\n");
3239
3240         if (priv->hw_params.sw_crypto) {
3241                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3242                 return -EOPNOTSUPP;
3243         }
3244
3245         if (is_zero_ether_addr(addr))
3246                 /* only support pairwise keys */
3247                 return -EOPNOTSUPP;
3248
3249         sta_id = iwl_find_station(priv, addr);
3250         if (sta_id == IWL_INVALID_STATION) {
3251                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3252                                    print_mac(mac, addr));
3253                 return -EINVAL;
3254
3255         }
3256
3257         mutex_lock(&priv->mutex);
3258         iwl_scan_cancel_timeout(priv, 100);
3259         mutex_unlock(&priv->mutex);
3260
3261         /* If we are getting WEP group key and we didn't receive any key mapping
3262          * so far, we are in legacy wep mode (group key only), otherwise we are
3263          * in 1X mode.
3264          * In legacy wep mode, we use another host command to the uCode */
3265         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3266                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3267                 if (cmd == SET_KEY)
3268                         is_default_wep_key = !priv->key_mapping_key;
3269                 else
3270                         is_default_wep_key =
3271                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3272         }
3273
3274         switch (cmd) {
3275         case SET_KEY:
3276                 if (is_default_wep_key)
3277                         ret = iwl_set_default_wep_key(priv, key);
3278                 else
3279                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3280
3281                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3282                 break;
3283         case DISABLE_KEY:
3284                 if (is_default_wep_key)
3285                         ret = iwl_remove_default_wep_key(priv, key);
3286                 else
3287                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3288
3289                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3290                 break;
3291         default:
3292                 ret = -EINVAL;
3293         }
3294
3295         IWL_DEBUG_MAC80211("leave\n");
3296
3297         return ret;
3298 }
3299
3300 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3301                            const struct ieee80211_tx_queue_params *params)
3302 {
3303         struct iwl_priv *priv = hw->priv;
3304         unsigned long flags;
3305         int q;
3306
3307         IWL_DEBUG_MAC80211("enter\n");
3308
3309         if (!iwl_is_ready_rf(priv)) {
3310                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3311                 return -EIO;
3312         }
3313
3314         if (queue >= AC_NUM) {
3315                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3316                 return 0;
3317         }
3318
3319         if (!priv->qos_data.qos_enable) {
3320                 priv->qos_data.qos_active = 0;
3321                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3322                 return 0;
3323         }
3324         q = AC_NUM - 1 - queue;
3325
3326         spin_lock_irqsave(&priv->lock, flags);
3327
3328         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3329         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3330         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3331         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3332                         cpu_to_le16((params->txop * 32));
3333
3334         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3335         priv->qos_data.qos_active = 1;
3336
3337         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3338                 iwl_activate_qos(priv, 1);
3339         else if (priv->assoc_id && iwl_is_associated(priv))
3340                 iwl_activate_qos(priv, 0);
3341
3342         spin_unlock_irqrestore(&priv->lock, flags);
3343
3344         IWL_DEBUG_MAC80211("leave\n");
3345         return 0;
3346 }
3347
3348 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3349                                 struct ieee80211_tx_queue_stats *stats)
3350 {
3351         struct iwl_priv *priv = hw->priv;
3352         int i, avail;
3353         struct iwl_tx_queue *txq;
3354         struct iwl_queue *q;
3355         unsigned long flags;
3356
3357         IWL_DEBUG_MAC80211("enter\n");
3358
3359         if (!iwl_is_ready_rf(priv)) {
3360                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3361                 return -EIO;
3362         }
3363
3364         spin_lock_irqsave(&priv->lock, flags);
3365
3366         for (i = 0; i < AC_NUM; i++) {
3367                 txq = &priv->txq[i];
3368                 q = &txq->q;
3369                 avail = iwl_queue_space(q);
3370
3371                 stats[i].len = q->n_window - avail;
3372                 stats[i].limit = q->n_window - q->high_mark;
3373                 stats[i].count = q->n_window;
3374
3375         }
3376         spin_unlock_irqrestore(&priv->lock, flags);
3377
3378         IWL_DEBUG_MAC80211("leave\n");
3379
3380         return 0;
3381 }
3382
3383 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3384                              struct ieee80211_low_level_stats *stats)
3385 {
3386         struct iwl_priv *priv = hw->priv;
3387
3388         priv = hw->priv;
3389         IWL_DEBUG_MAC80211("enter\n");
3390         IWL_DEBUG_MAC80211("leave\n");
3391
3392         return 0;
3393 }
3394
3395 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3396 {
3397         struct iwl_priv *priv = hw->priv;
3398         unsigned long flags;
3399
3400         mutex_lock(&priv->mutex);
3401         IWL_DEBUG_MAC80211("enter\n");
3402
3403         spin_lock_irqsave(&priv->lock, flags);
3404         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3405         spin_unlock_irqrestore(&priv->lock, flags);
3406
3407         iwl_reset_qos(priv);
3408
3409         spin_lock_irqsave(&priv->lock, flags);
3410         priv->assoc_id = 0;
3411         priv->assoc_capability = 0;
3412         priv->assoc_station_added = 0;
3413
3414         /* new association get rid of ibss beacon skb */
3415         if (priv->ibss_beacon)
3416                 dev_kfree_skb(priv->ibss_beacon);
3417
3418         priv->ibss_beacon = NULL;
3419
3420         priv->beacon_int = priv->hw->conf.beacon_int;
3421         priv->timestamp = 0;
3422         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3423                 priv->beacon_int = 0;
3424
3425         spin_unlock_irqrestore(&priv->lock, flags);
3426
3427         if (!iwl_is_ready_rf(priv)) {
3428                 IWL_DEBUG_MAC80211("leave - not ready\n");
3429                 mutex_unlock(&priv->mutex);
3430                 return;
3431         }
3432
3433         /* we are restarting association process
3434          * clear RXON_FILTER_ASSOC_MSK bit
3435          */
3436         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3437                 iwl_scan_cancel_timeout(priv, 100);
3438                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3439                 iwl4965_commit_rxon(priv);
3440         }
3441
3442         iwl_power_update_mode(priv, 0);
3443
3444         /* Per mac80211.h: This is only used in IBSS mode... */
3445         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3446
3447                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3448                 mutex_unlock(&priv->mutex);
3449                 return;
3450         }
3451
3452         iwl4965_set_rate(priv);
3453
3454         mutex_unlock(&priv->mutex);
3455
3456         IWL_DEBUG_MAC80211("leave\n");
3457 }
3458
3459 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3460 {
3461         struct iwl_priv *priv = hw->priv;
3462         unsigned long flags;
3463         __le64 timestamp;
3464
3465         mutex_lock(&priv->mutex);
3466         IWL_DEBUG_MAC80211("enter\n");
3467
3468         if (!iwl_is_ready_rf(priv)) {
3469                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3470                 mutex_unlock(&priv->mutex);
3471                 return -EIO;
3472         }
3473
3474         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3475                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3476                 mutex_unlock(&priv->mutex);
3477                 return -EIO;
3478         }
3479
3480         spin_lock_irqsave(&priv->lock, flags);
3481
3482         if (priv->ibss_beacon)
3483                 dev_kfree_skb(priv->ibss_beacon);
3484
3485         priv->ibss_beacon = skb;
3486
3487         priv->assoc_id = 0;
3488         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3489         priv->timestamp = le64_to_cpu(timestamp) +  (priv->beacon_int * 1000);
3490
3491         IWL_DEBUG_MAC80211("leave\n");
3492         spin_unlock_irqrestore(&priv->lock, flags);
3493
3494         iwl_reset_qos(priv);
3495
3496         iwl4965_post_associate(priv);
3497
3498         mutex_unlock(&priv->mutex);
3499
3500         return 0;
3501 }
3502
3503 /*****************************************************************************
3504  *
3505  * sysfs attributes
3506  *
3507  *****************************************************************************/
3508
3509 #ifdef CONFIG_IWLWIFI_DEBUG
3510
3511 /*
3512  * The following adds a new attribute to the sysfs representation
3513  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3514  * used for controlling the debug level.
3515  *
3516  * See the level definitions in iwl for details.
3517  */
3518
3519 static ssize_t show_debug_level(struct device *d,
3520                                 struct device_attribute *attr, char *buf)
3521 {
3522         struct iwl_priv *priv = d->driver_data;
3523
3524         return sprintf(buf, "0x%08X\n", priv->debug_level);
3525 }
3526 static ssize_t store_debug_level(struct device *d,
3527                                 struct device_attribute *attr,
3528                                  const char *buf, size_t count)
3529 {
3530         struct iwl_priv *priv = d->driver_data;
3531         char *p = (char *)buf;
3532         u32 val;
3533
3534         val = simple_strtoul(p, &p, 0);
3535         if (p == buf)
3536                 printk(KERN_INFO DRV_NAME
3537                        ": %s is not in hex or decimal form.\n", buf);
3538         else
3539                 priv->debug_level = val;
3540
3541         return strnlen(buf, count);
3542 }
3543
3544 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3545                         show_debug_level, store_debug_level);
3546
3547
3548 #endif /* CONFIG_IWLWIFI_DEBUG */
3549
3550
3551 static ssize_t show_version(struct device *d,
3552                                 struct device_attribute *attr, char *buf)
3553 {
3554         struct iwl_priv *priv = d->driver_data;
3555         struct iwl_alive_resp *palive = &priv->card_alive;
3556         ssize_t pos = 0;
3557         u16 eeprom_ver;
3558
3559         if (palive->is_valid)
3560                 pos += sprintf(buf + pos,
3561                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3562                                 "fw type: 0x%01X 0x%01X\n",
3563                                 palive->ucode_major, palive->ucode_minor,
3564                                 palive->sw_rev[0], palive->sw_rev[1],
3565                                 palive->ver_type, palive->ver_subtype);
3566         else
3567                 pos += sprintf(buf + pos, "fw not loaded\n");
3568
3569         if (priv->eeprom) {
3570                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3571                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3572                                  eeprom_ver);
3573         } else {
3574                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3575         }
3576
3577         return pos;
3578 }
3579
3580 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3581
3582 static ssize_t show_temperature(struct device *d,
3583                                 struct device_attribute *attr, char *buf)
3584 {
3585         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3586
3587         if (!iwl_is_alive(priv))
3588                 return -EAGAIN;
3589
3590         return sprintf(buf, "%d\n", priv->temperature);
3591 }
3592
3593 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3594
3595 static ssize_t show_rs_window(struct device *d,
3596                               struct device_attribute *attr,
3597                               char *buf)
3598 {
3599         struct iwl_priv *priv = d->driver_data;
3600         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3601 }
3602 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3603
3604 static ssize_t show_tx_power(struct device *d,
3605                              struct device_attribute *attr, char *buf)
3606 {
3607         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3608         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3609 }
3610
3611 static ssize_t store_tx_power(struct device *d,
3612                               struct device_attribute *attr,
3613                               const char *buf, size_t count)
3614 {
3615         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3616         char *p = (char *)buf;
3617         u32 val;
3618
3619         val = simple_strtoul(p, &p, 10);
3620         if (p == buf)
3621                 printk(KERN_INFO DRV_NAME
3622                        ": %s is not in decimal form.\n", buf);
3623         else
3624                 iwl_set_tx_power(priv, val, false);
3625
3626         return count;
3627 }
3628
3629 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3630
3631 static ssize_t show_flags(struct device *d,
3632                           struct device_attribute *attr, char *buf)
3633 {
3634         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3635
3636         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3637 }
3638
3639 static ssize_t store_flags(struct device *d,
3640                            struct device_attribute *attr,
3641                            const char *buf, size_t count)
3642 {
3643         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3644         u32 flags = simple_strtoul(buf, NULL, 0);
3645
3646         mutex_lock(&priv->mutex);
3647         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3648                 /* Cancel any currently running scans... */
3649                 if (iwl_scan_cancel_timeout(priv, 100))
3650                         IWL_WARNING("Could not cancel scan.\n");
3651                 else {
3652                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3653                                        flags);
3654                         priv->staging_rxon.flags = cpu_to_le32(flags);
3655                         iwl4965_commit_rxon(priv);
3656                 }
3657         }
3658         mutex_unlock(&priv->mutex);
3659
3660         return count;
3661 }
3662
3663 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3664
3665 static ssize_t show_filter_flags(struct device *d,
3666                                  struct device_attribute *attr, char *buf)
3667 {
3668         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3669
3670         return sprintf(buf, "0x%04X\n",
3671                 le32_to_cpu(priv->active_rxon.filter_flags));
3672 }
3673
3674 static ssize_t store_filter_flags(struct device *d,
3675                                   struct device_attribute *attr,
3676                                   const char *buf, size_t count)
3677 {
3678         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3679         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3680
3681         mutex_lock(&priv->mutex);
3682         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3683                 /* Cancel any currently running scans... */
3684                 if (iwl_scan_cancel_timeout(priv, 100))
3685                         IWL_WARNING("Could not cancel scan.\n");
3686                 else {
3687                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3688                                        "0x%04X\n", filter_flags);
3689                         priv->staging_rxon.filter_flags =
3690                                 cpu_to_le32(filter_flags);
3691                         iwl4965_commit_rxon(priv);
3692                 }
3693         }
3694         mutex_unlock(&priv->mutex);
3695
3696         return count;
3697 }
3698
3699 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3700                    store_filter_flags);
3701
3702 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3703
3704 static ssize_t show_measurement(struct device *d,
3705                                 struct device_attribute *attr, char *buf)
3706 {
3707         struct iwl_priv *priv = dev_get_drvdata(d);
3708         struct iwl4965_spectrum_notification measure_report;
3709         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3710         u8 *data = (u8 *) & measure_report;
3711         unsigned long flags;
3712
3713         spin_lock_irqsave(&priv->lock, flags);
3714         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3715                 spin_unlock_irqrestore(&priv->lock, flags);
3716                 return 0;
3717         }
3718         memcpy(&measure_report, &priv->measure_report, size);
3719         priv->measurement_status = 0;
3720         spin_unlock_irqrestore(&priv->lock, flags);
3721
3722         while (size && (PAGE_SIZE - len)) {
3723                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3724                                    PAGE_SIZE - len, 1);
3725                 len = strlen(buf);
3726                 if (PAGE_SIZE - len)
3727                         buf[len++] = '\n';
3728
3729                 ofs += 16;
3730                 size -= min(size, 16U);
3731         }
3732
3733         return len;
3734 }
3735
3736 static ssize_t store_measurement(struct device *d,
3737                                  struct device_attribute *attr,
3738                                  const char *buf, size_t count)
3739 {
3740         struct iwl_priv *priv = dev_get_drvdata(d);
3741         struct ieee80211_measurement_params params = {
3742                 .channel = le16_to_cpu(priv->active_rxon.channel),
3743                 .start_time = cpu_to_le64(priv->last_tsf),
3744                 .duration = cpu_to_le16(1),
3745         };
3746         u8 type = IWL_MEASURE_BASIC;
3747         u8 buffer[32];
3748         u8 channel;
3749
3750         if (count) {
3751                 char *p = buffer;
3752                 strncpy(buffer, buf, min(sizeof(buffer), count));
3753                 channel = simple_strtoul(p, NULL, 0);
3754                 if (channel)
3755                         params.channel = channel;
3756
3757                 p = buffer;
3758                 while (*p && *p != ' ')
3759                         p++;
3760                 if (*p)
3761                         type = simple_strtoul(p + 1, NULL, 0);
3762         }
3763
3764         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3765                        "channel %d (for '%s')\n", type, params.channel, buf);
3766         iwl4965_get_measurement(priv, &params, type);
3767
3768         return count;
3769 }
3770
3771 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3772                    show_measurement, store_measurement);
3773 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3774
3775 static ssize_t store_retry_rate(struct device *d,
3776                                 struct device_attribute *attr,
3777                                 const char *buf, size_t count)
3778 {
3779         struct iwl_priv *priv = dev_get_drvdata(d);
3780
3781         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3782         if (priv->retry_rate <= 0)
3783                 priv->retry_rate = 1;
3784
3785         return count;
3786 }
3787
3788 static ssize_t show_retry_rate(struct device *d,
3789                                struct device_attribute *attr, char *buf)
3790 {
3791         struct iwl_priv *priv = dev_get_drvdata(d);
3792         return sprintf(buf, "%d", priv->retry_rate);
3793 }
3794
3795 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3796                    store_retry_rate);
3797
3798 static ssize_t store_power_level(struct device *d,
3799                                  struct device_attribute *attr,
3800                                  const char *buf, size_t count)
3801 {
3802         struct iwl_priv *priv = dev_get_drvdata(d);
3803         int rc;
3804         int mode;
3805
3806         mode = simple_strtoul(buf, NULL, 0);
3807         mutex_lock(&priv->mutex);
3808
3809         if (!iwl_is_ready(priv)) {
3810                 rc = -EAGAIN;
3811                 goto out;
3812         }
3813
3814         rc = iwl_power_set_user_mode(priv, mode);
3815         if (rc) {
3816                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3817                 goto out;
3818         }
3819         rc = count;
3820
3821  out:
3822         mutex_unlock(&priv->mutex);
3823         return rc;
3824 }
3825
3826 #define MAX_WX_STRING 80
3827
3828 /* Values are in microsecond */
3829 static const s32 timeout_duration[] = {
3830         350000,
3831         250000,
3832         75000,
3833         37000,
3834         25000,
3835 };
3836 static const s32 period_duration[] = {
3837         400000,
3838         700000,
3839         1000000,
3840         1000000,
3841         1000000
3842 };
3843
3844 static ssize_t show_power_level(struct device *d,
3845                                 struct device_attribute *attr, char *buf)
3846 {
3847         struct iwl_priv *priv = dev_get_drvdata(d);
3848         int level = priv->power_data.power_mode;
3849         char *p = buf;
3850
3851         p += sprintf(p, "%d ", level);
3852         switch (level) {
3853         case IWL_POWER_MODE_CAM:
3854         case IWL_POWER_AC:
3855                 p += sprintf(p, "(AC)");
3856                 break;
3857         case IWL_POWER_BATTERY:
3858                 p += sprintf(p, "(BATTERY)");
3859                 break;
3860         default:
3861                 p += sprintf(p,
3862                              "(Timeout %dms, Period %dms)",
3863                              timeout_duration[level - 1] / 1000,
3864                              period_duration[level - 1] / 1000);
3865         }
3866 /*
3867         if (!(priv->power_mode & IWL_POWER_ENABLED))
3868                 p += sprintf(p, " OFF\n");
3869         else
3870                 p += sprintf(p, " \n");
3871 */
3872         p += sprintf(p, " \n");
3873         return (p - buf + 1);
3874 }
3875
3876 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3877                    store_power_level);
3878
3879 static ssize_t show_channels(struct device *d,
3880                              struct device_attribute *attr, char *buf)
3881 {
3882
3883         struct iwl_priv *priv = dev_get_drvdata(d);
3884         struct ieee80211_channel *channels = NULL;
3885         const struct ieee80211_supported_band *supp_band = NULL;
3886         int len = 0, i;
3887         int count = 0;
3888
3889         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3890                 return -EAGAIN;
3891
3892         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3893         channels = supp_band->channels;
3894         count = supp_band->n_channels;
3895
3896         len += sprintf(&buf[len],
3897                         "Displaying %d channels in 2.4GHz band "
3898                         "(802.11bg):\n", count);
3899
3900         for (i = 0; i < count; i++)
3901                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3902                                 ieee80211_frequency_to_channel(
3903                                 channels[i].center_freq),
3904                                 channels[i].max_power,
3905                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3906                                 " (IEEE 802.11h required)" : "",
3907                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3908                                 || (channels[i].flags &
3909                                 IEEE80211_CHAN_RADAR)) ? "" :
3910                                 ", IBSS",
3911                                 channels[i].flags &
3912                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3913                                 "passive only" : "active/passive");
3914
3915         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3916         channels = supp_band->channels;
3917         count = supp_band->n_channels;
3918
3919         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3920                         "(802.11a):\n", count);
3921
3922         for (i = 0; i < count; i++)
3923                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3924                                 ieee80211_frequency_to_channel(
3925                                 channels[i].center_freq),
3926                                 channels[i].max_power,
3927                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3928                                 " (IEEE 802.11h required)" : "",
3929                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3930                                 || (channels[i].flags &
3931                                 IEEE80211_CHAN_RADAR)) ? "" :
3932                                 ", IBSS",
3933                                 channels[i].flags &
3934                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3935                                 "passive only" : "active/passive");
3936
3937         return len;
3938 }
3939
3940 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3941
3942 static ssize_t show_statistics(struct device *d,
3943                                struct device_attribute *attr, char *buf)
3944 {
3945         struct iwl_priv *priv = dev_get_drvdata(d);
3946         u32 size = sizeof(struct iwl_notif_statistics);
3947         u32 len = 0, ofs = 0;
3948         u8 *data = (u8 *) & priv->statistics;
3949         int rc = 0;
3950
3951         if (!iwl_is_alive(priv))
3952                 return -EAGAIN;
3953
3954         mutex_lock(&priv->mutex);
3955         rc = iwl_send_statistics_request(priv, 0);
3956         mutex_unlock(&priv->mutex);
3957
3958         if (rc) {
3959                 len = sprintf(buf,
3960                               "Error sending statistics request: 0x%08X\n", rc);
3961                 return len;
3962         }
3963
3964         while (size && (PAGE_SIZE - len)) {
3965                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3966                                    PAGE_SIZE - len, 1);
3967                 len = strlen(buf);
3968                 if (PAGE_SIZE - len)
3969                         buf[len++] = '\n';
3970
3971                 ofs += 16;
3972                 size -= min(size, 16U);
3973         }
3974
3975         return len;
3976 }
3977
3978 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
3979
3980 static ssize_t show_status(struct device *d,
3981                            struct device_attribute *attr, char *buf)
3982 {
3983         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3984         if (!iwl_is_alive(priv))
3985                 return -EAGAIN;
3986         return sprintf(buf, "0x%08x\n", (int)priv->status);
3987 }
3988
3989 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
3990
3991 /*****************************************************************************
3992  *
3993  * driver setup and teardown
3994  *
3995  *****************************************************************************/
3996
3997 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3998 {
3999         priv->workqueue = create_workqueue(DRV_NAME);
4000
4001         init_waitqueue_head(&priv->wait_command_queue);
4002
4003         INIT_WORK(&priv->up, iwl4965_bg_up);
4004         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4005         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4006         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4007         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4008         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4009         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4010         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4011         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4012
4013         /* FIXME : remove when resolved PENDING */
4014         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4015         iwl_setup_scan_deferred_work(priv);
4016
4017         if (priv->cfg->ops->lib->setup_deferred_work)
4018                 priv->cfg->ops->lib->setup_deferred_work(priv);
4019
4020         init_timer(&priv->statistics_periodic);
4021         priv->statistics_periodic.data = (unsigned long)priv;
4022         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4023
4024         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4025                      iwl4965_irq_tasklet, (unsigned long)priv);
4026 }
4027
4028 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4029 {
4030         if (priv->cfg->ops->lib->cancel_deferred_work)
4031                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4032
4033         cancel_delayed_work_sync(&priv->init_alive_start);
4034         cancel_delayed_work(&priv->scan_check);
4035         cancel_delayed_work(&priv->alive_start);
4036         cancel_work_sync(&priv->beacon_update);
4037         del_timer_sync(&priv->statistics_periodic);
4038 }
4039
4040 static struct attribute *iwl4965_sysfs_entries[] = {
4041         &dev_attr_channels.attr,
4042         &dev_attr_flags.attr,
4043         &dev_attr_filter_flags.attr,
4044 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4045         &dev_attr_measurement.attr,
4046 #endif
4047         &dev_attr_power_level.attr,
4048         &dev_attr_retry_rate.attr,
4049         &dev_attr_rs_window.attr,
4050         &dev_attr_statistics.attr,
4051         &dev_attr_status.attr,
4052         &dev_attr_temperature.attr,
4053         &dev_attr_tx_power.attr,
4054 #ifdef CONFIG_IWLWIFI_DEBUG
4055         &dev_attr_debug_level.attr,
4056 #endif
4057         &dev_attr_version.attr,
4058
4059         NULL
4060 };
4061
4062 static struct attribute_group iwl4965_attribute_group = {
4063         .name = NULL,           /* put in device directory */
4064         .attrs = iwl4965_sysfs_entries,
4065 };
4066
4067 static struct ieee80211_ops iwl4965_hw_ops = {
4068         .tx = iwl4965_mac_tx,
4069         .start = iwl4965_mac_start,
4070         .stop = iwl4965_mac_stop,
4071         .add_interface = iwl4965_mac_add_interface,
4072         .remove_interface = iwl4965_mac_remove_interface,
4073         .config = iwl4965_mac_config,
4074         .config_interface = iwl4965_mac_config_interface,
4075         .configure_filter = iwl4965_configure_filter,
4076         .set_key = iwl4965_mac_set_key,
4077         .update_tkip_key = iwl4965_mac_update_tkip_key,
4078         .get_stats = iwl4965_mac_get_stats,
4079         .get_tx_stats = iwl4965_mac_get_tx_stats,
4080         .conf_tx = iwl4965_mac_conf_tx,
4081         .reset_tsf = iwl4965_mac_reset_tsf,
4082         .bss_info_changed = iwl4965_bss_info_changed,
4083         .ampdu_action = iwl4965_mac_ampdu_action,
4084         .hw_scan = iwl4965_mac_hw_scan
4085 };
4086
4087 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4088 {
4089         int err = 0;
4090         struct iwl_priv *priv;
4091         struct ieee80211_hw *hw;
4092         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4093         unsigned long flags;
4094         DECLARE_MAC_BUF(mac);
4095
4096         /************************
4097          * 1. Allocating HW data
4098          ************************/
4099
4100         /* Disabling hardware scan means that mac80211 will perform scans
4101          * "the hard way", rather than using device's scan. */
4102         if (cfg->mod_params->disable_hw_scan) {
4103                 if (cfg->mod_params->debug & IWL_DL_INFO)
4104                         dev_printk(KERN_DEBUG, &(pdev->dev),
4105                                    "Disabling hw_scan\n");
4106                 iwl4965_hw_ops.hw_scan = NULL;
4107         }
4108
4109         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4110         if (!hw) {
4111                 err = -ENOMEM;
4112                 goto out;
4113         }
4114         priv = hw->priv;
4115         /* At this point both hw and priv are allocated. */
4116
4117         SET_IEEE80211_DEV(hw, &pdev->dev);
4118
4119         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4120         priv->cfg = cfg;
4121         priv->pci_dev = pdev;
4122
4123 #ifdef CONFIG_IWLWIFI_DEBUG
4124         priv->debug_level = priv->cfg->mod_params->debug;
4125         atomic_set(&priv->restrict_refcnt, 0);
4126 #endif
4127
4128         /**************************
4129          * 2. Initializing PCI bus
4130          **************************/
4131         if (pci_enable_device(pdev)) {
4132                 err = -ENODEV;
4133                 goto out_ieee80211_free_hw;
4134         }
4135
4136         pci_set_master(pdev);
4137
4138         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4139         if (!err)
4140                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4141         if (err) {
4142                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4143                 if (!err)
4144                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4145                 /* both attempts failed: */
4146                 if (err) {
4147                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4148                                 DRV_NAME);
4149                         goto out_pci_disable_device;
4150                 }
4151         }
4152
4153         err = pci_request_regions(pdev, DRV_NAME);
4154         if (err)
4155                 goto out_pci_disable_device;
4156
4157         pci_set_drvdata(pdev, priv);
4158
4159         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4160          * PCI Tx retries from interfering with C3 CPU state */
4161         pci_write_config_byte(pdev, 0x41, 0x00);
4162
4163         /***********************
4164          * 3. Read REV register
4165          ***********************/
4166         priv->hw_base = pci_iomap(pdev, 0, 0);
4167         if (!priv->hw_base) {
4168                 err = -ENODEV;
4169                 goto out_pci_release_regions;
4170         }
4171
4172         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4173                 (unsigned long long) pci_resource_len(pdev, 0));
4174         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4175
4176         iwl_hw_detect(priv);
4177         printk(KERN_INFO DRV_NAME
4178                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4179                 priv->cfg->name, priv->hw_rev);
4180
4181         /* amp init */
4182         err = priv->cfg->ops->lib->apm_ops.init(priv);
4183         if (err < 0) {
4184                 IWL_DEBUG_INFO("Failed to init APMG\n");
4185                 goto out_iounmap;
4186         }
4187         /*****************
4188          * 4. Read EEPROM
4189          *****************/
4190         /* Read the EEPROM */
4191         err = iwl_eeprom_init(priv);
4192         if (err) {
4193                 IWL_ERROR("Unable to init EEPROM\n");
4194                 goto out_iounmap;
4195         }
4196         err = iwl_eeprom_check_version(priv);
4197         if (err)
4198                 goto out_iounmap;
4199
4200         /* extract MAC Address */
4201         iwl_eeprom_get_mac(priv, priv->mac_addr);
4202         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4203         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4204
4205         /************************
4206          * 5. Setup HW constants
4207          ************************/
4208         if (iwl_set_hw_params(priv)) {
4209                 IWL_ERROR("failed to set hw parameters\n");
4210                 goto out_free_eeprom;
4211         }
4212
4213         /*******************
4214          * 6. Setup priv
4215          *******************/
4216
4217         err = iwl_init_drv(priv);
4218         if (err)
4219                 goto out_free_eeprom;
4220         /* At this point both hw and priv are initialized. */
4221
4222         /**********************************
4223          * 7. Initialize module parameters
4224          **********************************/
4225
4226         /* Disable radio (SW RF KILL) via parameter when loading driver */
4227         if (priv->cfg->mod_params->disable) {
4228                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4229                 IWL_DEBUG_INFO("Radio disabled.\n");
4230         }
4231
4232         /********************
4233          * 8. Setup services
4234          ********************/
4235         spin_lock_irqsave(&priv->lock, flags);
4236         iwl4965_disable_interrupts(priv);
4237         spin_unlock_irqrestore(&priv->lock, flags);
4238
4239         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4240         if (err) {
4241                 IWL_ERROR("failed to create sysfs device attributes\n");
4242                 goto out_uninit_drv;
4243         }
4244
4245
4246         iwl_setup_deferred_work(priv);
4247         iwl_setup_rx_handlers(priv);
4248
4249         /********************
4250          * 9. Conclude
4251          ********************/
4252         pci_save_state(pdev);
4253         pci_disable_device(pdev);
4254
4255         /**********************************
4256          * 10. Setup and register mac80211
4257          **********************************/
4258
4259         err = iwl_setup_mac(priv);
4260         if (err)
4261                 goto out_remove_sysfs;
4262
4263         err = iwl_dbgfs_register(priv, DRV_NAME);
4264         if (err)
4265                 IWL_ERROR("failed to create debugfs files\n");
4266
4267         err = iwl_rfkill_init(priv);
4268         if (err)
4269                 IWL_ERROR("Unable to initialize RFKILL system. "
4270                                   "Ignoring error: %d\n", err);
4271         iwl_power_initialize(priv);
4272         return 0;
4273
4274  out_remove_sysfs:
4275         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4276  out_uninit_drv:
4277         iwl_uninit_drv(priv);
4278  out_free_eeprom:
4279         iwl_eeprom_free(priv);
4280  out_iounmap:
4281         pci_iounmap(pdev, priv->hw_base);
4282  out_pci_release_regions:
4283         pci_release_regions(pdev);
4284         pci_set_drvdata(pdev, NULL);
4285  out_pci_disable_device:
4286         pci_disable_device(pdev);
4287  out_ieee80211_free_hw:
4288         ieee80211_free_hw(priv->hw);
4289  out:
4290         return err;
4291 }
4292
4293 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4294 {
4295         struct iwl_priv *priv = pci_get_drvdata(pdev);
4296         unsigned long flags;
4297
4298         if (!priv)
4299                 return;
4300
4301         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4302
4303         iwl_dbgfs_unregister(priv);
4304         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4305
4306         if (priv->mac80211_registered) {
4307                 ieee80211_unregister_hw(priv->hw);
4308                 priv->mac80211_registered = 0;
4309         }
4310
4311         set_bit(STATUS_EXIT_PENDING, &priv->status);
4312
4313         iwl4965_down(priv);
4314
4315         /* make sure we flush any pending irq or
4316          * tasklet for the driver
4317          */
4318         spin_lock_irqsave(&priv->lock, flags);
4319         iwl4965_disable_interrupts(priv);
4320         spin_unlock_irqrestore(&priv->lock, flags);
4321
4322         iwl_synchronize_irq(priv);
4323
4324         iwl_rfkill_unregister(priv);
4325         iwl4965_dealloc_ucode_pci(priv);
4326
4327         if (priv->rxq.bd)
4328                 iwl_rx_queue_free(priv, &priv->rxq);
4329         iwl_hw_txq_ctx_free(priv);
4330
4331         iwl_clear_stations_table(priv);
4332         iwl_eeprom_free(priv);
4333
4334
4335         /*netif_stop_queue(dev); */
4336         flush_workqueue(priv->workqueue);
4337
4338         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4339          * priv->workqueue... so we can't take down the workqueue
4340          * until now... */
4341         destroy_workqueue(priv->workqueue);
4342         priv->workqueue = NULL;
4343
4344         pci_iounmap(pdev, priv->hw_base);
4345         pci_release_regions(pdev);
4346         pci_disable_device(pdev);
4347         pci_set_drvdata(pdev, NULL);
4348
4349         iwl_uninit_drv(priv);
4350
4351         if (priv->ibss_beacon)
4352                 dev_kfree_skb(priv->ibss_beacon);
4353
4354         ieee80211_free_hw(priv->hw);
4355 }
4356
4357 #ifdef CONFIG_PM
4358
4359 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4360 {
4361         struct iwl_priv *priv = pci_get_drvdata(pdev);
4362
4363         if (priv->is_open) {
4364                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4365                 iwl4965_mac_stop(priv->hw);
4366                 priv->is_open = 1;
4367         }
4368
4369         pci_set_power_state(pdev, PCI_D3hot);
4370
4371         return 0;
4372 }
4373
4374 static int iwl4965_pci_resume(struct pci_dev *pdev)
4375 {
4376         struct iwl_priv *priv = pci_get_drvdata(pdev);
4377
4378         pci_set_power_state(pdev, PCI_D0);
4379
4380         if (priv->is_open)
4381                 iwl4965_mac_start(priv->hw);
4382
4383         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4384         return 0;
4385 }
4386
4387 #endif /* CONFIG_PM */
4388
4389 /*****************************************************************************
4390  *
4391  * driver and module entry point
4392  *
4393  *****************************************************************************/
4394
4395 /* Hardware specific file defines the PCI IDs table for that hardware module */
4396 static struct pci_device_id iwl_hw_card_ids[] = {
4397         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4398         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4399 #ifdef CONFIG_IWL5000
4400         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4401         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4402         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4403         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4404         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4405         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4406         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4407         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4408         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4409         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4410         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4411 #endif /* CONFIG_IWL5000 */
4412         {0}
4413 };
4414 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4415
4416 static struct pci_driver iwl_driver = {
4417         .name = DRV_NAME,
4418         .id_table = iwl_hw_card_ids,
4419         .probe = iwl4965_pci_probe,
4420         .remove = __devexit_p(iwl4965_pci_remove),
4421 #ifdef CONFIG_PM
4422         .suspend = iwl4965_pci_suspend,
4423         .resume = iwl4965_pci_resume,
4424 #endif
4425 };
4426
4427 static int __init iwl4965_init(void)
4428 {
4429
4430         int ret;
4431         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4432         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4433
4434         ret = iwl4965_rate_control_register();
4435         if (ret) {
4436                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4437                 return ret;
4438         }
4439
4440         ret = pci_register_driver(&iwl_driver);
4441         if (ret) {
4442                 IWL_ERROR("Unable to initialize PCI module\n");
4443                 goto error_register;
4444         }
4445
4446         return ret;
4447
4448 error_register:
4449         iwl4965_rate_control_unregister();
4450         return ret;
4451 }
4452
4453 static void __exit iwl4965_exit(void)
4454 {
4455         pci_unregister_driver(&iwl_driver);
4456         iwl4965_rate_control_unregister();
4457 }
4458
4459 module_exit(iwl4965_exit);
4460 module_init(iwl4965_init);