err.no Git - linux-2.6/blob - 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 (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 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 rc = 0;
 245
 246         if (!iwl_is_alive(priv))
 247                 return -1;
 248
 249         /* always get timestamp with Rx frame */
 250         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 251
 252         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 253         if (rc) {
 254                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 255                 return -EINVAL;
 256         }
 257
 258         /* If we don't need to send a full RXON, we can use
 259          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 260          * and other flags for the current radio configuration. */
 261         if (!iwl4965_full_rxon_required(priv)) {
 262                 rc = iwl_send_rxon_assoc(priv);
 263                 if (rc) {
 264                         IWL_ERROR("Error setting RXON_ASSOC "
 265                                   "configuration (%d).\n", rc);
 266                         return rc;
 267                 }
 268
 269                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 270
 271                 return 0;
 272         }
 273
 274         /* station table will be cleared */
 275         priv->assoc_station_added = 0;
 276
 277         /* If we are currently associated and the new config requires
 278          * an RXON_ASSOC and the new config wants the associated mask enabled,
 279          * we must clear the associated from the active configuration
 280          * before we apply the new config */
 281         if (iwl_is_associated(priv) &&
 282             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 283                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 284                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 285
 286                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 287                                       sizeof(struct iwl_rxon_cmd),
 288                                       &priv->active_rxon);
 289
 290                 /* If the mask clearing failed then we set
 291                  * active_rxon back to what it was previously */
 292                 if (rc) {
 293                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 294                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 295                                   "configuration (%d).\n", rc);
 296                         return rc;
 297                 }
 298         }
 299
 300         IWL_DEBUG_INFO("Sending RXON\n"
 301                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 302                        "* channel = %d\n"
 303                        "* bssid = %s\n",
 304                        ((priv->staging_rxon.filter_flags &
 305                          RXON_FILTER_ASSOC_MSK) ? "" : "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         /* Apply the new configuration */
 311         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 312                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 313         if (rc) {
 314                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 315                 return rc;
 316         }
 317
 318         iwl_remove_station(priv, iwl_bcast_addr, 0);
 319         iwlcore_clear_stations_table(priv);
 320
 321         if (!priv->error_recovering)
 322                 priv->start_calib = 0;
 323
 324         iwl_init_sensitivity(priv);
 325
 326         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 327
 328         /* If we issue a new RXON command which required a tune then we must
 329          * send a new TXPOWER command or we won't be able to Tx any frames */
 330         rc = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 331         if (rc) {
 332                 IWL_ERROR("Error sending TX power (%d).\n", rc);
 333                 return rc;
 334         }
 335
 336         /* Add the broadcast address so we can send broadcast frames */
 337         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 338             IWL_INVALID_STATION) {
 339                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 340                 return -EIO;
 341         }
 342
 343         /* If we have set the ASSOC_MSK and we are in BSS mode then
 344          * add the IWL_AP_ID to the station rate table */
 345         if (iwl_is_associated(priv) &&
 346             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 347                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 348                     == IWL_INVALID_STATION) {
 349                         IWL_ERROR("Error adding AP address for transmit.\n");
 350                         return -EIO;
 351                 }
 352                 priv->assoc_station_added = 1;
 353                 if (priv->default_wep_key &&
 354                     iwl_send_static_wepkey_cmd(priv, 0))
 355                         IWL_ERROR("Could not send WEP static key.\n");
 356         }
 357
 358         return 0;
 359 }
 360
 361 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 362 {
 363
 364         iwl_set_rxon_chain(priv);
 365         iwl4965_commit_rxon(priv);
 366 }
 367
 368 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 369 {
 370         struct iwl4965_bt_cmd bt_cmd = {
 371                 .flags = 3,
 372                 .lead_time = 0xAA,
 373                 .max_kill = 1,
 374                 .kill_ack_mask = 0,
 375                 .kill_cts_mask = 0,
 376         };
 377
 378         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 379                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 380 }
 381
 382 /*
 383  * CARD_STATE_CMD
 384  *
 385  * Use: Sets the device's internal card state to enable, disable, or halt
 386  *
 387  * When in the 'enable' state the card operates as normal.
 388  * When in the 'disable' state, the card enters into a low power mode.
 389  * When in the 'halt' state, the card is shut down and must be fully
 390  * restarted to come back on.
 391  */
 392 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 393 {
 394         struct iwl_host_cmd cmd = {
 395                 .id = REPLY_CARD_STATE_CMD,
 396                 .len = sizeof(u32),
 397                 .data = &flags,
 398                 .meta.flags = meta_flag,
 399         };
 400
 401         return iwl_send_cmd(priv, &cmd);
 402 }
 403
 404 static void iwl_clear_free_frames(struct iwl_priv *priv)
 405 {
 406         struct list_head *element;
 407
 408         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 409                        priv->frames_count);
 410
 411         while (!list_empty(&priv->free_frames)) {
 412                 element = priv->free_frames.next;
 413                 list_del(element);
 414                 kfree(list_entry(element, struct iwl_frame, list));
 415                 priv->frames_count--;
 416         }
 417
 418         if (priv->frames_count) {
 419                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 420                             priv->frames_count);
 421                 priv->frames_count = 0;
 422         }
 423 }
 424
 425 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 426 {
 427         struct iwl_frame *frame;
 428         struct list_head *element;
 429         if (list_empty(&priv->free_frames)) {
 430                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 431                 if (!frame) {
 432                         IWL_ERROR("Could not allocate frame!\n");
 433                         return NULL;
 434                 }
 435
 436                 priv->frames_count++;
 437                 return frame;
 438         }
 439
 440         element = priv->free_frames.next;
 441         list_del(element);
 442         return list_entry(element, struct iwl_frame, list);
 443 }
 444
 445 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 446 {
 447         memset(frame, 0, sizeof(*frame));
 448         list_add(&frame->list, &priv->free_frames);
 449 }
 450
 451 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 452                                 struct ieee80211_hdr *hdr,
 453                                 const u8 *dest, int left)
 454 {
 455
 456         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 457             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 458              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 459                 return 0;
 460
 461         if (priv->ibss_beacon->len > left)
 462                 return 0;
 463
 464         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 465
 466         return priv->ibss_beacon->len;
 467 }
 468
 469 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 470 {
 471         int i;
 472         int rate_mask;
 473
 474         /* Set rate mask*/
 475         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 476                 rate_mask = priv->active_rate_basic & 0xF;
 477         else
 478                 rate_mask = priv->active_rate_basic & 0xFF0;
 479
 480         /* Find lowest valid rate */
 481         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 482                                         i = iwl_rates[i].next_ieee) {
 483                 if (rate_mask & (1 << i))
 484                         return iwl_rates[i].plcp;
 485         }
 486
 487         /* No valid rate was found. Assign the lowest one */
 488         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 489                 return IWL_RATE_1M_PLCP;
 490         else
 491                 return IWL_RATE_6M_PLCP;
 492 }
 493
 494 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 495 {
 496         struct iwl_frame *frame;
 497         unsigned int frame_size;
 498         int rc;
 499         u8 rate;
 500
 501         frame = iwl_get_free_frame(priv);
 502
 503         if (!frame) {
 504                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 505                           "command.\n");
 506                 return -ENOMEM;
 507         }
 508
 509         rate = iwl4965_rate_get_lowest_plcp(priv);
 510
 511         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 512
 513         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 514                               &frame->u.cmd[0]);
 515
 516         iwl_free_frame(priv, frame);
 517
 518         return rc;
 519 }
 520
 521 /******************************************************************************
 522  *
 523  * Misc. internal state and helper functions
 524  *
 525  ******************************************************************************/
 526
 527 static void iwl4965_ht_conf(struct iwl_priv *priv,
 528                             struct ieee80211_bss_conf *bss_conf)
 529 {
 530         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 531         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 532         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 533
 534         IWL_DEBUG_MAC80211("enter: \n");
 535
 536         iwl_conf->is_ht = bss_conf->assoc_ht;
 537
 538         if (!iwl_conf->is_ht)
 539                 return;
 540
 541         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 542
 543         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 544                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 545         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 546                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 547
 548         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 549         iwl_conf->max_amsdu_size =
 550                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 551
 552         iwl_conf->supported_chan_width =
 553                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 554         iwl_conf->extension_chan_offset =
 555                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 556         /* If no above or below channel supplied disable FAT channel */
 557         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 558             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 559                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 560                 iwl_conf->supported_chan_width = 0;
 561         }
 562
 563         iwl_conf->tx_mimo_ps_mode =
 564                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 565         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 566
 567         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 568         iwl_conf->tx_chan_width =
 569                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 570         iwl_conf->ht_protection =
 571                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 572         iwl_conf->non_GF_STA_present =
 573                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 574
 575         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 576         IWL_DEBUG_MAC80211("leave\n");
 577 }
 578
 579 /*
 580  * QoS  support
 581 */
 582 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 583                                        struct iwl4965_qosparam_cmd *qos)
 584 {
 585
 586         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 587                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 588 }
 589
 590 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 591 {
 592         unsigned long flags;
 593
 594         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 595                 return;
 596
 597         if (!priv->qos_data.qos_enable)
 598                 return;
 599
 600         spin_lock_irqsave(&priv->lock, flags);
 601         priv->qos_data.def_qos_parm.qos_flags = 0;
 602
 603         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 604             !priv->qos_data.qos_cap.q_AP.txop_request)
 605                 priv->qos_data.def_qos_parm.qos_flags |=
 606                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 607         if (priv->qos_data.qos_active)
 608                 priv->qos_data.def_qos_parm.qos_flags |=
 609                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 610
 611         if (priv->current_ht_config.is_ht)
 612                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 613
 614         spin_unlock_irqrestore(&priv->lock, flags);
 615
 616         if (force || iwl_is_associated(priv)) {
 617                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 618                                 priv->qos_data.qos_active,
 619                                 priv->qos_data.def_qos_parm.qos_flags);
 620
 621                 iwl4965_send_qos_params_command(priv,
 622                                 &(priv->qos_data.def_qos_parm));
 623         }
 624 }
 625
 626 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 627 {
 628         /* Filter incoming packets to determine if they are targeted toward
 629          * this network, discarding packets coming from ourselves */
 630         switch (priv->iw_mode) {
 631         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 632                 /* packets from our adapter are dropped (echo) */
 633                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 634                         return 0;
 635                 /* {broad,multi}cast packets to our IBSS go through */
 636                 if (is_multicast_ether_addr(header->addr1))
 637                         return !compare_ether_addr(header->addr3, priv->bssid);
 638                 /* packets to our adapter go through */
 639                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 640         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 641                 /* packets from our adapter are dropped (echo) */
 642                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 643                         return 0;
 644                 /* {broad,multi}cast packets to our BSS go through */
 645                 if (is_multicast_ether_addr(header->addr1))
 646                         return !compare_ether_addr(header->addr2, priv->bssid);
 647                 /* packets to our adapter go through */
 648                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 649         default:
 650                 break;
 651         }
 652
 653         return 1;
 654 }
 655
 656 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 657 {
 658         /* Reset ieee stats */
 659
 660         /* We don't reset the net_device_stats (ieee->stats) on
 661          * re-association */
 662
 663         priv->last_seq_num = -1;
 664         priv->last_frag_num = -1;
 665         priv->last_packet_time = 0;
 666
 667         iwl_scan_cancel(priv);
 668 }
 669
 670 #define MAX_UCODE_BEACON_INTERVAL       4096
 671 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 672
 673 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 674 {
 675         u16 new_val = 0;
 676         u16 beacon_factor = 0;
 677
 678         beacon_factor =
 679             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 680                 / MAX_UCODE_BEACON_INTERVAL;
 681         new_val = beacon_val / beacon_factor;
 682
 683         return cpu_to_le16(new_val);
 684 }
 685
 686 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 687 {
 688         u64 interval_tm_unit;
 689         u64 tsf, result;
 690         unsigned long flags;
 691         struct ieee80211_conf *conf = NULL;
 692         u16 beacon_int = 0;
 693
 694         conf = ieee80211_get_hw_conf(priv->hw);
 695
 696         spin_lock_irqsave(&priv->lock, flags);
 697         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 698         priv->rxon_timing.timestamp.dw[0] =
 699                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 700
 701         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 702
 703         tsf = priv->timestamp;
 704
 705         beacon_int = priv->beacon_int;
 706         spin_unlock_irqrestore(&priv->lock, flags);
 707
 708         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 709                 if (beacon_int == 0) {
 710                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 711                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 712                 } else {
 713                         priv->rxon_timing.beacon_interval =
 714                                 cpu_to_le16(beacon_int);
 715                         priv->rxon_timing.beacon_interval =
 716                             iwl4965_adjust_beacon_interval(
 717                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 718                 }
 719
 720                 priv->rxon_timing.atim_window = 0;
 721         } else {
 722                 priv->rxon_timing.beacon_interval =
 723                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 724                 /* TODO: we need to get atim_window from upper stack
 725                  * for now we set to 0 */
 726                 priv->rxon_timing.atim_window = 0;
 727         }
 728
 729         interval_tm_unit =
 730                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 731         result = do_div(tsf, interval_tm_unit);
 732         priv->rxon_timing.beacon_init_val =
 733             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 734
 735         IWL_DEBUG_ASSOC
 736             ("beacon interval %d beacon timer %d beacon tim %d\n",
 737                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 738                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 739                 le16_to_cpu(priv->rxon_timing.atim_window));
 740 }
 741
 742 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 743                                    enum ieee80211_band band)
 744 {
 745         if (band == IEEE80211_BAND_5GHZ) {
 746                 priv->staging_rxon.flags &=
 747                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 748                       | RXON_FLG_CCK_MSK);
 749                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 750         } else {
 751                 /* Copied from iwl4965_post_associate() */
 752                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 753                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 754                 else
 755                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 756
 757                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 758                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 759
 760                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 761                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 762                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 763         }
 764 }
 765
 766 /*
 767  * initialize rxon structure with default values from eeprom
 768  */
 769 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 770 {
 771         const struct iwl_channel_info *ch_info;
 772
 773         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 774
 775         switch (priv->iw_mode) {
 776         case IEEE80211_IF_TYPE_AP:
 777                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 778                 break;
 779
 780         case IEEE80211_IF_TYPE_STA:
 781                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 782                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 783                 break;
 784
 785         case IEEE80211_IF_TYPE_IBSS:
 786                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 787                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 788                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 789                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 790                 break;
 791
 792         case IEEE80211_IF_TYPE_MNTR:
 793                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 794                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 795                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 796                 break;
 797         default:
 798                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 799                 break;
 800         }
 801
 802 #if 0
 803         /* TODO:  Figure out when short_preamble would be set and cache from
 804          * that */
 805         if (!hw_to_local(priv->hw)->short_preamble)
 806                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 807         else
 808                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 809 #endif
 810
 811         ch_info = iwl_get_channel_info(priv, priv->band,
 812                                        le16_to_cpu(priv->staging_rxon.channel));
 813
 814         if (!ch_info)
 815                 ch_info = &priv->channel_info[0];
 816
 817         /*
 818          * in some case A channels are all non IBSS
 819          * in this case force B/G channel
 820          */
 821         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 822             !(is_channel_ibss(ch_info)))
 823                 ch_info = &priv->channel_info[0];
 824
 825         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 826         priv->band = ch_info->band;
 827
 828         iwl_set_flags_for_band(priv, priv->band);
 829
 830         priv->staging_rxon.ofdm_basic_rates =
 831             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 832         priv->staging_rxon.cck_basic_rates =
 833             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 834
 835         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 836                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 837         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 838         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 839         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 840         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 841         iwl_set_rxon_chain(priv);
 842 }
 843
 844 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 845 {
 846         priv->iw_mode = mode;
 847
 848         /* init channel/phymode to values given at driver init */
 849         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 850
 851         iwl4965_connection_init_rx_config(priv);
 852         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 853
 854         iwlcore_clear_stations_table(priv);
 855
 856         /* dont commit rxon if rf-kill is on*/
 857         if (!iwl_is_ready_rf(priv))
 858                 return -EAGAIN;
 859
 860         cancel_delayed_work(&priv->scan_check);
 861         if (iwl_scan_cancel_timeout(priv, 100)) {
 862                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 863                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 864                 return -EAGAIN;
 865         }
 866
 867         iwl4965_commit_rxon(priv);
 868
 869         return 0;
 870 }
 871
 872 static void iwl4965_set_rate(struct iwl_priv *priv)
 873 {
 874         const struct ieee80211_supported_band *hw = NULL;
 875         struct ieee80211_rate *rate;
 876         int i;
 877
 878         hw = iwl_get_hw_mode(priv, priv->band);
 879         if (!hw) {
 880                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 881                 return;
 882         }
 883
 884         priv->active_rate = 0;
 885         priv->active_rate_basic = 0;
 886
 887         for (i = 0; i < hw->n_bitrates; i++) {
 888                 rate = &(hw->bitrates[i]);
 889                 if (rate->hw_value < IWL_RATE_COUNT)
 890                         priv->active_rate |= (1 << rate->hw_value);
 891         }
 892
 893         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 894                        priv->active_rate, priv->active_rate_basic);
 895
 896         /*
 897          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 898          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 899          * OFDM
 900          */
 901         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 902                 priv->staging_rxon.cck_basic_rates =
 903                     ((priv->active_rate_basic &
 904                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 905         else
 906                 priv->staging_rxon.cck_basic_rates =
 907                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 908
 909         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 910                 priv->staging_rxon.ofdm_basic_rates =
 911                     ((priv->active_rate_basic &
 912                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 913                       IWL_FIRST_OFDM_RATE) & 0xFF;
 914         else
 915                 priv->staging_rxon.ofdm_basic_rates =
 916                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 917 }
 918
 919 int iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
 920 {
 921         unsigned long flags;
 922
 923         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
 924                 return 0;
 925
 926         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
 927                           disable_radio ? "OFF" : "ON");
 928
 929         if (disable_radio) {
 930                 iwl_scan_cancel(priv);
 931                 /* FIXME: This is a workaround for AP */
 932                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
 933                         spin_lock_irqsave(&priv->lock, flags);
 934                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
 935                                     CSR_UCODE_SW_BIT_RFKILL);
 936                         spin_unlock_irqrestore(&priv->lock, flags);
 937                         /* call the host command only if no hw rf-kill set */
 938                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
 939                             iwl_is_ready(priv))
 940                                 iwl4965_send_card_state(priv,
 941                                                         CARD_STATE_CMD_DISABLE,
 942                                                         0);
 943                         set_bit(STATUS_RF_KILL_SW, &priv->status);
 944
 945                         /* make sure mac80211 stop sending Tx frame */
 946                         if (priv->mac80211_registered)
 947                                 ieee80211_stop_queues(priv->hw);
 948                 }
 949                 return 0;
 950         }
 951
 952         spin_lock_irqsave(&priv->lock, flags);
 953         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
 954
 955         clear_bit(STATUS_RF_KILL_SW, &priv->status);
 956         spin_unlock_irqrestore(&priv->lock, flags);
 957
 958         /* wake up ucode */
 959         msleep(10);
 960
 961         spin_lock_irqsave(&priv->lock, flags);
 962         iwl_read32(priv, CSR_UCODE_DRV_GP1);
 963         if (!iwl_grab_nic_access(priv))
 964                 iwl_release_nic_access(priv);
 965         spin_unlock_irqrestore(&priv->lock, flags);
 966
 967         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
 968                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
 969                                   "disabled by HW switch\n");
 970                 return 0;
 971         }
 972
 973         if (priv->is_open)
 974                 queue_work(priv->workqueue, &priv->restart);
 975         return 1;
 976 }
 977
 978 #define IWL_PACKET_RETRY_TIME HZ
 979
 980 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 981 {
 982         u16 sc = le16_to_cpu(header->seq_ctrl);
 983         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
 984         u16 frag = sc & IEEE80211_SCTL_FRAG;
 985         u16 *last_seq, *last_frag;
 986         unsigned long *last_time;
 987
 988         switch (priv->iw_mode) {
 989         case IEEE80211_IF_TYPE_IBSS:{
 990                 struct list_head *p;
 991                 struct iwl4965_ibss_seq *entry = NULL;
 992                 u8 *mac = header->addr2;
 993                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
 994
 995                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
 996                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
 997                         if (!compare_ether_addr(entry->mac, mac))
 998                                 break;
 999                 }
1000                 if (p == &priv->ibss_mac_hash[index]) {
1001                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1002                         if (!entry) {
1003                                 IWL_ERROR("Cannot malloc new mac entry\n");
1004                                 return 0;
1005                         }
1006                         memcpy(entry->mac, mac, ETH_ALEN);
1007                         entry->seq_num = seq;
1008                         entry->frag_num = frag;
1009                         entry->packet_time = jiffies;
1010                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1011                         return 0;
1012                 }
1013                 last_seq = &entry->seq_num;
1014                 last_frag = &entry->frag_num;
1015                 last_time = &entry->packet_time;
1016                 break;
1017         }
1018         case IEEE80211_IF_TYPE_STA:
1019                 last_seq = &priv->last_seq_num;
1020                 last_frag = &priv->last_frag_num;
1021                 last_time = &priv->last_packet_time;
1022                 break;
1023         default:
1024                 return 0;
1025         }
1026         if ((*last_seq == seq) &&
1027             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1028                 if (*last_frag == frag)
1029                         goto drop;
1030                 if (*last_frag + 1 != frag)
1031                         /* out-of-order fragment */
1032                         goto drop;
1033         } else
1034                 *last_seq = seq;
1035
1036         *last_frag = frag;
1037         *last_time = jiffies;
1038         return 0;
1039
1040  drop:
1041         return 1;
1042 }
1043
1044 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1045
1046 #include "iwl-spectrum.h"
1047
1048 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1049 #define BEACON_TIME_MASK_HIGH   0xFF000000
1050 #define TIME_UNIT               1024
1051
1052 /*
1053  * extended beacon time format
1054  * time in usec will be changed into a 32-bit value in 8:24 format
1055  * the high 1 byte is the beacon counts
1056  * the lower 3 bytes is the time in usec within one beacon interval
1057  */
1058
1059 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1060 {
1061         u32 quot;
1062         u32 rem;
1063         u32 interval = beacon_interval * 1024;
1064
1065         if (!interval || !usec)
1066                 return 0;
1067
1068         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1069         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1070
1071         return (quot << 24) + rem;
1072 }
1073
1074 /* base is usually what we get from ucode with each received frame,
1075  * the same as HW timer counter counting down
1076  */
1077
1078 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1079 {
1080         u32 base_low = base & BEACON_TIME_MASK_LOW;
1081         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1082         u32 interval = beacon_interval * TIME_UNIT;
1083         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1084             (addon & BEACON_TIME_MASK_HIGH);
1085
1086         if (base_low > addon_low)
1087                 res += base_low - addon_low;
1088         else if (base_low < addon_low) {
1089                 res += interval + base_low - addon_low;
1090                 res += (1 << 24);
1091         } else
1092                 res += (1 << 24);
1093
1094         return cpu_to_le32(res);
1095 }
1096
1097 static int iwl4965_get_measurement(struct iwl_priv *priv,
1098                                struct ieee80211_measurement_params *params,
1099                                u8 type)
1100 {
1101         struct iwl4965_spectrum_cmd spectrum;
1102         struct iwl_rx_packet *res;
1103         struct iwl_host_cmd cmd = {
1104                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1105                 .data = (void *)&spectrum,
1106                 .meta.flags = CMD_WANT_SKB,
1107         };
1108         u32 add_time = le64_to_cpu(params->start_time);
1109         int rc;
1110         int spectrum_resp_status;
1111         int duration = le16_to_cpu(params->duration);
1112
1113         if (iwl_is_associated(priv))
1114                 add_time =
1115                     iwl4965_usecs_to_beacons(
1116                         le64_to_cpu(params->start_time) - priv->last_tsf,
1117                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1118
1119         memset(&spectrum, 0, sizeof(spectrum));
1120
1121         spectrum.channel_count = cpu_to_le16(1);
1122         spectrum.flags =
1123             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1124         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1125         cmd.len = sizeof(spectrum);
1126         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1127
1128         if (iwl_is_associated(priv))
1129                 spectrum.start_time =
1130                     iwl4965_add_beacon_time(priv->last_beacon_time,
1131                                 add_time,
1132                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1133         else
1134                 spectrum.start_time = 0;
1135
1136         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1137         spectrum.channels[0].channel = params->channel;
1138         spectrum.channels[0].type = type;
1139         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1140                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1141                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1142
1143         rc = iwl_send_cmd_sync(priv, &cmd);
1144         if (rc)
1145                 return rc;
1146
1147         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1148         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1149                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1150                 rc = -EIO;
1151         }
1152
1153         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1154         switch (spectrum_resp_status) {
1155         case 0:         /* Command will be handled */
1156                 if (res->u.spectrum.id != 0xff) {
1157                         IWL_DEBUG_INFO
1158                             ("Replaced existing measurement: %d\n",
1159                              res->u.spectrum.id);
1160                         priv->measurement_status &= ~MEASUREMENT_READY;
1161                 }
1162                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1163                 rc = 0;
1164                 break;
1165
1166         case 1:         /* Command will not be handled */
1167                 rc = -EAGAIN;
1168                 break;
1169         }
1170
1171         dev_kfree_skb_any(cmd.meta.u.skb);
1172
1173         return rc;
1174 }
1175 #endif
1176
1177 /******************************************************************************
1178  *
1179  * Generic RX handler implementations
1180  *
1181  ******************************************************************************/
1182 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1183                                 struct iwl_rx_mem_buffer *rxb)
1184 {
1185         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1186         struct iwl_alive_resp *palive;
1187         struct delayed_work *pwork;
1188
1189         palive = &pkt->u.alive_frame;
1190
1191         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1192                        "0x%01X 0x%01X\n",
1193                        palive->is_valid, palive->ver_type,
1194                        palive->ver_subtype);
1195
1196         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1197                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1198                 memcpy(&priv->card_alive_init,
1199                        &pkt->u.alive_frame,
1200                        sizeof(struct iwl_init_alive_resp));
1201                 pwork = &priv->init_alive_start;
1202         } else {
1203                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1204                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1205                        sizeof(struct iwl_alive_resp));
1206                 pwork = &priv->alive_start;
1207         }
1208
1209         /* We delay the ALIVE response by 5ms to
1210          * give the HW RF Kill time to activate... */
1211         if (palive->is_valid == UCODE_VALID_OK)
1212                 queue_delayed_work(priv->workqueue, pwork,
1213                                    msecs_to_jiffies(5));
1214         else
1215                 IWL_WARNING("uCode did not respond OK.\n");
1216 }
1217
1218 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1219                                    struct iwl_rx_mem_buffer *rxb)
1220 {
1221         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1222
1223         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1224                 "seq 0x%04X ser 0x%08X\n",
1225                 le32_to_cpu(pkt->u.err_resp.error_type),
1226                 get_cmd_string(pkt->u.err_resp.cmd_id),
1227                 pkt->u.err_resp.cmd_id,
1228                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1229                 le32_to_cpu(pkt->u.err_resp.error_info));
1230 }
1231
1232 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1233
1234 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1235 {
1236         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1237         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1238         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1239         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1240                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1241         rxon->channel = csa->channel;
1242         priv->staging_rxon.channel = csa->channel;
1243 }
1244
1245 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1246                                           struct iwl_rx_mem_buffer *rxb)
1247 {
1248 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1249         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1250         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1251
1252         if (!report->state) {
1253                 IWL_DEBUG(IWL_DL_11H,
1254                         "Spectrum Measure Notification: Start\n");
1255                 return;
1256         }
1257
1258         memcpy(&priv->measure_report, report, sizeof(*report));
1259         priv->measurement_status |= MEASUREMENT_READY;
1260 #endif
1261 }
1262
1263 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1264                                       struct iwl_rx_mem_buffer *rxb)
1265 {
1266 #ifdef CONFIG_IWLWIFI_DEBUG
1267         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1268         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1269         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1270                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1271 #endif
1272 }
1273
1274 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1275                                              struct iwl_rx_mem_buffer *rxb)
1276 {
1277         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1278         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1279                         "notification for %s:\n",
1280                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1281         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1282 }
1283
1284 static void iwl4965_bg_beacon_update(struct work_struct *work)
1285 {
1286         struct iwl_priv *priv =
1287                 container_of(work, struct iwl_priv, beacon_update);
1288         struct sk_buff *beacon;
1289
1290         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1291         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1292
1293         if (!beacon) {
1294                 IWL_ERROR("update beacon failed\n");
1295                 return;
1296         }
1297
1298         mutex_lock(&priv->mutex);
1299         /* new beacon skb is allocated every time; dispose previous.*/
1300         if (priv->ibss_beacon)
1301                 dev_kfree_skb(priv->ibss_beacon);
1302
1303         priv->ibss_beacon = beacon;
1304         mutex_unlock(&priv->mutex);
1305
1306         iwl4965_send_beacon_cmd(priv);
1307 }
1308
1309 /**
1310  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1311  *
1312  * This callback is provided in order to send a statistics request.
1313  *
1314  * This timer function is continually reset to execute within
1315  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1316  * was received.  We need to ensure we receive the statistics in order
1317  * to update the temperature used for calibrating the TXPOWER.
1318  */
1319 static void iwl4965_bg_statistics_periodic(unsigned long data)
1320 {
1321         struct iwl_priv *priv = (struct iwl_priv *)data;
1322
1323         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1324                 return;
1325
1326         iwl_send_statistics_request(priv, CMD_ASYNC);
1327 }
1328
1329 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1330                                 struct iwl_rx_mem_buffer *rxb)
1331 {
1332 #ifdef CONFIG_IWLWIFI_DEBUG
1333         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1334         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1335         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1336
1337         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1338                 "tsf %d %d rate %d\n",
1339                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1340                 beacon->beacon_notify_hdr.failure_frame,
1341                 le32_to_cpu(beacon->ibss_mgr_status),
1342                 le32_to_cpu(beacon->high_tsf),
1343                 le32_to_cpu(beacon->low_tsf), rate);
1344 #endif
1345
1346         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1347             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1348                 queue_work(priv->workqueue, &priv->beacon_update);
1349 }
1350
1351 /* Handle notification from uCode that card's power state is changing
1352  * due to software, hardware, or critical temperature RFKILL */
1353 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1354                                     struct iwl_rx_mem_buffer *rxb)
1355 {
1356         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1357         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1358         unsigned long status = priv->status;
1359
1360         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1361                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1362                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1363
1364         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1365                      RF_CARD_DISABLED)) {
1366
1367                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1368                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1369
1370                 if (!iwl_grab_nic_access(priv)) {
1371                         iwl_write_direct32(
1372                                 priv, HBUS_TARG_MBX_C,
1373                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1374
1375                         iwl_release_nic_access(priv);
1376                 }
1377
1378                 if (!(flags & RXON_CARD_DISABLED)) {
1379                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1380                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1381                         if (!iwl_grab_nic_access(priv)) {
1382                                 iwl_write_direct32(
1383                                         priv, HBUS_TARG_MBX_C,
1384                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1385
1386                                 iwl_release_nic_access(priv);
1387                         }
1388                 }
1389
1390                 if (flags & RF_CARD_DISABLED) {
1391                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1392                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1393                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1394                         if (!iwl_grab_nic_access(priv))
1395                                 iwl_release_nic_access(priv);
1396                 }
1397         }
1398
1399         if (flags & HW_CARD_DISABLED)
1400                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1401         else
1402                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1403
1404
1405         if (flags & SW_CARD_DISABLED)
1406                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1407         else
1408                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1409
1410         if (!(flags & RXON_CARD_DISABLED))
1411                 iwl_scan_cancel(priv);
1412
1413         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1414              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1415             (test_bit(STATUS_RF_KILL_SW, &status) !=
1416              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1417                 queue_work(priv->workqueue, &priv->rf_kill);
1418         else
1419                 wake_up_interruptible(&priv->wait_command_queue);
1420 }
1421
1422 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1423  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1424 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1425                                     struct iwl_rx_mem_buffer *rxb)
1426 {
1427         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1428         priv->last_phy_res[0] = 1;
1429         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1430                sizeof(struct iwl4965_rx_phy_res));
1431 }
1432
1433 /**
1434  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1435  *
1436  * Setup the RX handlers for each of the reply types sent from the uCode
1437  * to the host.
1438  *
1439  * This function chains into the hardware specific files for them to setup
1440  * any hardware specific handlers as well.
1441  */
1442 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1443 {
1444         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1445         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1446         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1447         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1448             iwl4965_rx_spectrum_measure_notif;
1449         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1450         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1451             iwl4965_rx_pm_debug_statistics_notif;
1452         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1453
1454         /*
1455          * The same handler is used for both the REPLY to a discrete
1456          * statistics request from the host as well as for the periodic
1457          * statistics notifications (after received beacons) from the uCode.
1458          */
1459         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1460         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1461
1462         iwl_setup_rx_scan_handlers(priv);
1463
1464         /* status change handler */
1465         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1466
1467         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1468             iwl_rx_missed_beacon_notif;
1469         /* Rx handlers */
1470         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1471         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1472         /* Set up hardware specific Rx handlers */
1473         priv->cfg->ops->lib->rx_handler_setup(priv);
1474 }
1475
1476 /*
1477  * this should be called while priv->lock is locked
1478 */
1479 static void __iwl_rx_replenish(struct iwl_priv *priv)
1480 {
1481         iwl_rx_allocate(priv);
1482         iwl_rx_queue_restock(priv);
1483 }
1484
1485
1486 /**
1487  * iwl_rx_handle - Main entry function for receiving responses from uCode
1488  *
1489  * Uses the priv->rx_handlers callback function array to invoke
1490  * the appropriate handlers, including command responses,
1491  * frame-received notifications, and other notifications.
1492  */
1493 void iwl_rx_handle(struct iwl_priv *priv)
1494 {
1495         struct iwl_rx_mem_buffer *rxb;
1496         struct iwl_rx_packet *pkt;
1497         struct iwl_rx_queue *rxq = &priv->rxq;
1498         u32 r, i;
1499         int reclaim;
1500         unsigned long flags;
1501         u8 fill_rx = 0;
1502         u32 count = 8;
1503
1504         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1505          * buffer that the driver may process (last buffer filled by ucode). */
1506         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1507         i = rxq->read;
1508
1509         /* Rx interrupt, but nothing sent from uCode */
1510         if (i == r)
1511                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1512
1513         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1514                 fill_rx = 1;
1515
1516         while (i != r) {
1517                 rxb = rxq->queue[i];
1518
1519                 /* If an RXB doesn't have a Rx queue slot associated with it,
1520                  * then a bug has been introduced in the queue refilling
1521                  * routines -- catch it here */
1522                 BUG_ON(rxb == NULL);
1523
1524                 rxq->queue[i] = NULL;
1525
1526                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1527                                             priv->hw_params.rx_buf_size,
1528                                             PCI_DMA_FROMDEVICE);
1529                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1530
1531                 /* Reclaim a command buffer only if this packet is a response
1532                  *   to a (driver-originated) command.
1533                  * If the packet (e.g. Rx frame) originated from uCode,
1534                  *   there is no command buffer to reclaim.
1535                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1536                  *   but apparently a few don't get set; catch them here. */
1537                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1538                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1539                         (pkt->hdr.cmd != REPLY_RX) &&
1540                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1541                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1542                         (pkt->hdr.cmd != REPLY_TX);
1543
1544                 /* Based on type of command response or notification,
1545                  *   handle those that need handling via function in
1546                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1547                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1548                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1549                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1550                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1551                 } else {
1552                         /* No handling needed */
1553                         IWL_DEBUG(IWL_DL_RX,
1554                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1555                                 r, i, get_cmd_string(pkt->hdr.cmd),
1556                                 pkt->hdr.cmd);
1557                 }
1558
1559                 if (reclaim) {
1560                         /* Invoke any callbacks, transfer the skb to caller, and
1561                          * fire off the (possibly) blocking iwl_send_cmd()
1562                          * as we reclaim the driver command queue */
1563                         if (rxb && rxb->skb)
1564                                 iwl_tx_cmd_complete(priv, rxb);
1565                         else
1566                                 IWL_WARNING("Claim null rxb?\n");
1567                 }
1568
1569                 /* For now we just don't re-use anything.  We can tweak this
1570                  * later to try and re-use notification packets and SKBs that
1571                  * fail to Rx correctly */
1572                 if (rxb->skb != NULL) {
1573                         priv->alloc_rxb_skb--;
1574                         dev_kfree_skb_any(rxb->skb);
1575                         rxb->skb = NULL;
1576                 }
1577
1578                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1579                                  priv->hw_params.rx_buf_size,
1580                                  PCI_DMA_FROMDEVICE);
1581                 spin_lock_irqsave(&rxq->lock, flags);
1582                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1583                 spin_unlock_irqrestore(&rxq->lock, flags);
1584                 i = (i + 1) & RX_QUEUE_MASK;
1585                 /* If there are a lot of unused frames,
1586                  * restock the Rx queue so ucode wont assert. */
1587                 if (fill_rx) {
1588                         count++;
1589                         if (count >= 8) {
1590                                 priv->rxq.read = i;
1591                                 __iwl_rx_replenish(priv);
1592                                 count = 0;
1593                         }
1594                 }
1595         }
1596
1597         /* Backtrack one entry */
1598         priv->rxq.read = i;
1599         iwl_rx_queue_restock(priv);
1600 }
1601
1602 #define PERFECT_RSSI (-20) /* dBm */
1603 #define WORST_RSSI (-95)   /* dBm */
1604 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1605
1606 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1607  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1608  *   about formulas used below. */
1609 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
1610 {
1611         int sig_qual;
1612         int degradation = PERFECT_RSSI - rssi_dbm;
1613
1614         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1615          * as indicator; formula is (signal dbm - noise dbm).
1616          * SNR at or above 40 is a great signal (100%).
1617          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1618          * Weakest usable signal is usually 10 - 15 dB SNR. */
1619         if (noise_dbm) {
1620                 if (rssi_dbm - noise_dbm >= 40)
1621                         return 100;
1622                 else if (rssi_dbm < noise_dbm)
1623                         return 0;
1624                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1625
1626         /* Else use just the signal level.
1627          * This formula is a least squares fit of data points collected and
1628          *   compared with a reference system that had a percentage (%) display
1629          *   for signal quality. */
1630         } else
1631                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1632                             (15 * RSSI_RANGE + 62 * degradation)) /
1633                            (RSSI_RANGE * RSSI_RANGE);
1634
1635         if (sig_qual > 100)
1636                 sig_qual = 100;
1637         else if (sig_qual < 1)
1638                 sig_qual = 0;
1639
1640         return sig_qual;
1641 }
1642
1643 #ifdef CONFIG_IWLWIFI_DEBUG
1644 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1645 {
1646         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1647         DECLARE_MAC_BUF(mac);
1648
1649         IWL_DEBUG_RADIO("RX CONFIG:\n");
1650         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1651         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1652         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1653         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1654                         le32_to_cpu(rxon->filter_flags));
1655         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1656         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1657                         rxon->ofdm_basic_rates);
1658         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1659         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1660                         print_mac(mac, rxon->node_addr));
1661         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1662                         print_mac(mac, rxon->bssid_addr));
1663         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1664 }
1665 #endif
1666
1667 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1668 {
1669         IWL_DEBUG_ISR("Enabling interrupts\n");
1670         set_bit(STATUS_INT_ENABLED, &priv->status);
1671         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1672 }
1673
1674 /* call this function to flush any scheduled tasklet */
1675 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1676 {
1677         /* wait to make sure we flush pedding tasklet*/
1678         synchronize_irq(priv->pci_dev->irq);
1679         tasklet_kill(&priv->irq_tasklet);
1680 }
1681
1682 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1683 {
1684         clear_bit(STATUS_INT_ENABLED, &priv->status);
1685
1686         /* disable interrupts from uCode/NIC to host */
1687         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1688
1689         /* acknowledge/clear/reset any interrupts still pending
1690          * from uCode or flow handler (Rx/Tx DMA) */
1691         iwl_write32(priv, CSR_INT, 0xffffffff);
1692         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1693         IWL_DEBUG_ISR("Disabled interrupts\n");
1694 }
1695
1696
1697 /**
1698  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1699  */
1700 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1701 {
1702         /* Set the FW error flag -- cleared on iwl4965_down */
1703         set_bit(STATUS_FW_ERROR, &priv->status);
1704
1705         /* Cancel currently queued command. */
1706         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1707
1708 #ifdef CONFIG_IWLWIFI_DEBUG
1709         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1710                 iwl_dump_nic_error_log(priv);
1711                 iwl_dump_nic_event_log(priv);
1712                 iwl4965_print_rx_config_cmd(priv);
1713         }
1714 #endif
1715
1716         wake_up_interruptible(&priv->wait_command_queue);
1717
1718         /* Keep the restart process from trying to send host
1719          * commands by clearing the INIT status bit */
1720         clear_bit(STATUS_READY, &priv->status);
1721
1722         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1723                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1724                           "Restarting adapter due to uCode error.\n");
1725
1726                 if (iwl_is_associated(priv)) {
1727                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1728                                sizeof(priv->recovery_rxon));
1729                         priv->error_recovering = 1;
1730                 }
1731                 if (priv->cfg->mod_params->restart_fw)
1732                         queue_work(priv->workqueue, &priv->restart);
1733         }
1734 }
1735
1736 static void iwl4965_error_recovery(struct iwl_priv *priv)
1737 {
1738         unsigned long flags;
1739
1740         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1741                sizeof(priv->staging_rxon));
1742         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1743         iwl4965_commit_rxon(priv);
1744
1745         iwl_rxon_add_station(priv, priv->bssid, 1);
1746
1747         spin_lock_irqsave(&priv->lock, flags);
1748         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1749         priv->error_recovering = 0;
1750         spin_unlock_irqrestore(&priv->lock, flags);
1751 }
1752
1753 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1754 {
1755         u32 inta, handled = 0;
1756         u32 inta_fh;
1757         unsigned long flags;
1758 #ifdef CONFIG_IWLWIFI_DEBUG
1759         u32 inta_mask;
1760 #endif
1761
1762         spin_lock_irqsave(&priv->lock, flags);
1763
1764         /* Ack/clear/reset pending uCode interrupts.
1765          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1766          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1767         inta = iwl_read32(priv, CSR_INT);
1768         iwl_write32(priv, CSR_INT, inta);
1769
1770         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1771          * Any new interrupts that happen after this, either while we're
1772          * in this tasklet, or later, will show up in next ISR/tasklet. */
1773         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1774         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1775
1776 #ifdef CONFIG_IWLWIFI_DEBUG
1777         if (priv->debug_level & IWL_DL_ISR) {
1778                 /* just for debug */
1779                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1780                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1781                               inta, inta_mask, inta_fh);
1782         }
1783 #endif
1784
1785         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1786          * atomic, make sure that inta covers all the interrupts that
1787          * we've discovered, even if FH interrupt came in just after
1788          * reading CSR_INT. */
1789         if (inta_fh & CSR49_FH_INT_RX_MASK)
1790                 inta |= CSR_INT_BIT_FH_RX;
1791         if (inta_fh & CSR49_FH_INT_TX_MASK)
1792                 inta |= CSR_INT_BIT_FH_TX;
1793
1794         /* Now service all interrupt bits discovered above. */
1795         if (inta & CSR_INT_BIT_HW_ERR) {
1796                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1797
1798                 /* Tell the device to stop sending interrupts */
1799                 iwl4965_disable_interrupts(priv);
1800
1801                 iwl4965_irq_handle_error(priv);
1802
1803                 handled |= CSR_INT_BIT_HW_ERR;
1804
1805                 spin_unlock_irqrestore(&priv->lock, flags);
1806
1807                 return;
1808         }
1809
1810 #ifdef CONFIG_IWLWIFI_DEBUG
1811         if (priv->debug_level & (IWL_DL_ISR)) {
1812                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1813                 if (inta & CSR_INT_BIT_SCD)
1814                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1815                                       "the frame/frames.\n");
1816
1817                 /* Alive notification via Rx interrupt will do the real work */
1818                 if (inta & CSR_INT_BIT_ALIVE)
1819                         IWL_DEBUG_ISR("Alive interrupt\n");
1820         }
1821 #endif
1822         /* Safely ignore these bits for debug checks below */
1823         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1824
1825         /* HW RF KILL switch toggled */
1826         if (inta & CSR_INT_BIT_RF_KILL) {
1827                 int hw_rf_kill = 0;
1828                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1829                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1830                         hw_rf_kill = 1;
1831
1832                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1833                                 hw_rf_kill ? "disable radio":"enable radio");
1834
1835                 /* Queue restart only if RF_KILL switch was set to "kill"
1836                  *   when we loaded driver, and is now set to "enable".
1837                  * After we're Alive, RF_KILL gets handled by
1838                  *   iwl4965_rx_card_state_notif() */
1839                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1840                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1841                         queue_work(priv->workqueue, &priv->restart);
1842                 }
1843
1844                 handled |= CSR_INT_BIT_RF_KILL;
1845         }
1846
1847         /* Chip got too hot and stopped itself */
1848         if (inta & CSR_INT_BIT_CT_KILL) {
1849                 IWL_ERROR("Microcode CT kill error detected.\n");
1850                 handled |= CSR_INT_BIT_CT_KILL;
1851         }
1852
1853         /* Error detected by uCode */
1854         if (inta & CSR_INT_BIT_SW_ERR) {
1855                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1856                           inta);
1857                 iwl4965_irq_handle_error(priv);
1858                 handled |= CSR_INT_BIT_SW_ERR;
1859         }
1860
1861         /* uCode wakes up after power-down sleep */
1862         if (inta & CSR_INT_BIT_WAKEUP) {
1863                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1864                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1865                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1866                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1867                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1868                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1869                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1870                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1871
1872                 handled |= CSR_INT_BIT_WAKEUP;
1873         }
1874
1875         /* All uCode command responses, including Tx command responses,
1876          * Rx "responses" (frame-received notification), and other
1877          * notifications from uCode come through here*/
1878         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1879                 iwl_rx_handle(priv);
1880                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1881         }
1882
1883         if (inta & CSR_INT_BIT_FH_TX) {
1884                 IWL_DEBUG_ISR("Tx interrupt\n");
1885                 handled |= CSR_INT_BIT_FH_TX;
1886                 /* FH finished to write, send event */
1887                 priv->ucode_write_complete = 1;
1888                 wake_up_interruptible(&priv->wait_command_queue);
1889         }
1890
1891         if (inta & ~handled)
1892                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1893
1894         if (inta & ~CSR_INI_SET_MASK) {
1895                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1896                          inta & ~CSR_INI_SET_MASK);
1897                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1898         }
1899
1900         /* Re-enable all interrupts */
1901         /* only Re-enable if diabled by irq */
1902         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1903                 iwl4965_enable_interrupts(priv);
1904
1905 #ifdef CONFIG_IWLWIFI_DEBUG
1906         if (priv->debug_level & (IWL_DL_ISR)) {
1907                 inta = iwl_read32(priv, CSR_INT);
1908                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1909                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1910                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1911                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1912         }
1913 #endif
1914         spin_unlock_irqrestore(&priv->lock, flags);
1915 }
1916
1917 static irqreturn_t iwl4965_isr(int irq, void *data)
1918 {
1919         struct iwl_priv *priv = data;
1920         u32 inta, inta_mask;
1921         u32 inta_fh;
1922         if (!priv)
1923                 return IRQ_NONE;
1924
1925         spin_lock(&priv->lock);
1926
1927         /* Disable (but don't clear!) interrupts here to avoid
1928          *    back-to-back ISRs and sporadic interrupts from our NIC.
1929          * If we have something to service, the tasklet will re-enable ints.
1930          * If we *don't* have something, we'll re-enable before leaving here. */
1931         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1932         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1933
1934         /* Discover which interrupts are active/pending */
1935         inta = iwl_read32(priv, CSR_INT);
1936         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1937
1938         /* Ignore interrupt if there's nothing in NIC to service.
1939          * This may be due to IRQ shared with another device,
1940          * or due to sporadic interrupts thrown from our NIC. */
1941         if (!inta && !inta_fh) {
1942                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1943                 goto none;
1944         }
1945
1946         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1947                 /* Hardware disappeared. It might have already raised
1948                  * an interrupt */
1949                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1950                 goto unplugged;
1951         }
1952
1953         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1954                       inta, inta_mask, inta_fh);
1955
1956         inta &= ~CSR_INT_BIT_SCD;
1957
1958         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1959         if (likely(inta || inta_fh))
1960                 tasklet_schedule(&priv->irq_tasklet);
1961
1962  unplugged:
1963         spin_unlock(&priv->lock);
1964         return IRQ_HANDLED;
1965
1966  none:
1967         /* re-enable interrupts here since we don't have anything to service. */
1968         /* only Re-enable if diabled by irq */
1969         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1970                 iwl4965_enable_interrupts(priv);
1971         spin_unlock(&priv->lock);
1972         return IRQ_NONE;
1973 }
1974
1975 /******************************************************************************
1976  *
1977  * uCode download functions
1978  *
1979  ******************************************************************************/
1980
1981 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1982 {
1983         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1984         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1985         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1986         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1987         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1988         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1989 }
1990
1991 static void iwl4965_nic_start(struct iwl_priv *priv)
1992 {
1993         /* Remove all resets to allow NIC to operate */
1994         iwl_write32(priv, CSR_RESET, 0);
1995 }
1996
1997
1998 /**
1999  * iwl4965_read_ucode - Read uCode images from disk file.
2000  *
2001  * Copy into buffers for card to fetch via bus-mastering
2002  */
2003 static int iwl4965_read_ucode(struct iwl_priv *priv)
2004 {
2005         struct iwl4965_ucode *ucode;
2006         int ret;
2007         const struct firmware *ucode_raw;
2008         const char *name = priv->cfg->fw_name;
2009         u8 *src;
2010         size_t len;
2011         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2012
2013         /* Ask kernel firmware_class module to get the boot firmware off disk.
2014          * request_firmware() is synchronous, file is in memory on return. */
2015         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2016         if (ret < 0) {
2017                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2018                                         name, ret);
2019                 goto error;
2020         }
2021
2022         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2023                        name, ucode_raw->size);
2024
2025         /* Make sure that we got at least our header! */
2026         if (ucode_raw->size < sizeof(*ucode)) {
2027                 IWL_ERROR("File size way too small!\n");
2028                 ret = -EINVAL;
2029                 goto err_release;
2030         }
2031
2032         /* Data from ucode file:  header followed by uCode images */
2033         ucode = (void *)ucode_raw->data;
2034
2035         ver = le32_to_cpu(ucode->ver);
2036         inst_size = le32_to_cpu(ucode->inst_size);
2037         data_size = le32_to_cpu(ucode->data_size);
2038         init_size = le32_to_cpu(ucode->init_size);
2039         init_data_size = le32_to_cpu(ucode->init_data_size);
2040         boot_size = le32_to_cpu(ucode->boot_size);
2041
2042         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2043         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2044                        inst_size);
2045         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2046                        data_size);
2047         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2048                        init_size);
2049         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2050                        init_data_size);
2051         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2052                        boot_size);
2053
2054         /* Verify size of file vs. image size info in file's header */
2055         if (ucode_raw->size < sizeof(*ucode) +
2056                 inst_size + data_size + init_size +
2057                 init_data_size + boot_size) {
2058
2059                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2060                                (int)ucode_raw->size);
2061                 ret = -EINVAL;
2062                 goto err_release;
2063         }
2064
2065         /* Verify that uCode images will fit in card's SRAM */
2066         if (inst_size > priv->hw_params.max_inst_size) {
2067                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2068                                inst_size);
2069                 ret = -EINVAL;
2070                 goto err_release;
2071         }
2072
2073         if (data_size > priv->hw_params.max_data_size) {
2074                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2075                                 data_size);
2076                 ret = -EINVAL;
2077                 goto err_release;
2078         }
2079         if (init_size > priv->hw_params.max_inst_size) {
2080                 IWL_DEBUG_INFO
2081                     ("uCode init instr len %d too large to fit in\n",
2082                       init_size);
2083                 ret = -EINVAL;
2084                 goto err_release;
2085         }
2086         if (init_data_size > priv->hw_params.max_data_size) {
2087                 IWL_DEBUG_INFO
2088                     ("uCode init data len %d too large to fit in\n",
2089                       init_data_size);
2090                 ret = -EINVAL;
2091                 goto err_release;
2092         }
2093         if (boot_size > priv->hw_params.max_bsm_size) {
2094                 IWL_DEBUG_INFO
2095                     ("uCode boot instr len %d too large to fit in\n",
2096                       boot_size);
2097                 ret = -EINVAL;
2098                 goto err_release;
2099         }
2100
2101         /* Allocate ucode buffers for card's bus-master loading ... */
2102
2103         /* Runtime instructions and 2 copies of data:
2104          * 1) unmodified from disk
2105          * 2) backup cache for save/restore during power-downs */
2106         priv->ucode_code.len = inst_size;
2107         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2108
2109         priv->ucode_data.len = data_size;
2110         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2111
2112         priv->ucode_data_backup.len = data_size;
2113         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2114
2115         /* Initialization instructions and data */
2116         if (init_size && init_data_size) {
2117                 priv->ucode_init.len = init_size;
2118                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2119
2120                 priv->ucode_init_data.len = init_data_size;
2121                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2122
2123                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2124                         goto err_pci_alloc;
2125         }
2126
2127         /* Bootstrap (instructions only, no data) */
2128         if (boot_size) {
2129                 priv->ucode_boot.len = boot_size;
2130                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2131
2132                 if (!priv->ucode_boot.v_addr)
2133                         goto err_pci_alloc;
2134         }
2135
2136         /* Copy images into buffers for card's bus-master reads ... */
2137
2138         /* Runtime instructions (first block of data in file) */
2139         src = &ucode->data[0];
2140         len = priv->ucode_code.len;
2141         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2142         memcpy(priv->ucode_code.v_addr, src, len);
2143         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2144                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2145
2146         /* Runtime data (2nd block)
2147          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2148         src = &ucode->data[inst_size];
2149         len = priv->ucode_data.len;
2150         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2151         memcpy(priv->ucode_data.v_addr, src, len);
2152         memcpy(priv->ucode_data_backup.v_addr, src, len);
2153
2154         /* Initialization instructions (3rd block) */
2155         if (init_size) {
2156                 src = &ucode->data[inst_size + data_size];
2157                 len = priv->ucode_init.len;
2158                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2159                                 len);
2160                 memcpy(priv->ucode_init.v_addr, src, len);
2161         }
2162
2163         /* Initialization data (4th block) */
2164         if (init_data_size) {
2165                 src = &ucode->data[inst_size + data_size + init_size];
2166                 len = priv->ucode_init_data.len;
2167                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2168                                len);
2169                 memcpy(priv->ucode_init_data.v_addr, src, len);
2170         }
2171
2172         /* Bootstrap instructions (5th block) */
2173         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2174         len = priv->ucode_boot.len;
2175         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2176         memcpy(priv->ucode_boot.v_addr, src, len);
2177
2178         /* We have our copies now, allow OS release its copies */
2179         release_firmware(ucode_raw);
2180         return 0;
2181
2182  err_pci_alloc:
2183         IWL_ERROR("failed to allocate pci memory\n");
2184         ret = -ENOMEM;
2185         iwl4965_dealloc_ucode_pci(priv);
2186
2187  err_release:
2188         release_firmware(ucode_raw);
2189
2190  error:
2191         return ret;
2192 }
2193
2194 /**
2195  * iwl_alive_start - called after REPLY_ALIVE notification received
2196  *                   from protocol/runtime uCode (initialization uCode's
2197  *                   Alive gets handled by iwl_init_alive_start()).
2198  */
2199 static void iwl_alive_start(struct iwl_priv *priv)
2200 {
2201         int ret = 0;
2202
2203         IWL_DEBUG_INFO("Runtime Alive received.\n");
2204
2205         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2206                 /* We had an error bringing up the hardware, so take it
2207                  * all the way back down so we can try again */
2208                 IWL_DEBUG_INFO("Alive failed.\n");
2209                 goto restart;
2210         }
2211
2212         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2213          * This is a paranoid check, because we would not have gotten the
2214          * "runtime" alive if code weren't properly loaded.  */
2215         if (iwl_verify_ucode(priv)) {
2216                 /* Runtime instruction load was bad;
2217                  * take it all the way back down so we can try again */
2218                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2219                 goto restart;
2220         }
2221
2222         iwlcore_clear_stations_table(priv);
2223         ret = priv->cfg->ops->lib->alive_notify(priv);
2224         if (ret) {
2225                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2226                             ret);
2227                 goto restart;
2228         }
2229
2230         /* After the ALIVE response, we can send host commands to 4965 uCode */
2231         set_bit(STATUS_ALIVE, &priv->status);
2232
2233         if (iwl_is_rfkill(priv))
2234                 return;
2235
2236         ieee80211_wake_queues(priv->hw);
2237
2238         priv->active_rate = priv->rates_mask;
2239         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2240
2241         if (iwl_is_associated(priv)) {
2242                 struct iwl_rxon_cmd *active_rxon =
2243                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2244
2245                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2246                        sizeof(priv->staging_rxon));
2247                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2248         } else {
2249                 /* Initialize our rx_config data */
2250                 iwl4965_connection_init_rx_config(priv);
2251                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2252         }
2253
2254         /* Configure Bluetooth device coexistence support */
2255         iwl4965_send_bt_config(priv);
2256
2257         iwl_reset_run_time_calib(priv);
2258
2259         /* Configure the adapter for unassociated operation */
2260         iwl4965_commit_rxon(priv);
2261
2262         /* At this point, the NIC is initialized and operational */
2263         iwl_rf_kill_ct_config(priv);
2264
2265         iwl_leds_register(priv);
2266
2267         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2268         set_bit(STATUS_READY, &priv->status);
2269         wake_up_interruptible(&priv->wait_command_queue);
2270
2271         if (priv->error_recovering)
2272                 iwl4965_error_recovery(priv);
2273
2274         iwl_power_update_mode(priv, 1);
2275         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2276
2277         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2278                 iwl4965_set_mode(priv, priv->iw_mode);
2279
2280         return;
2281
2282  restart:
2283         queue_work(priv->workqueue, &priv->restart);
2284 }
2285
2286 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2287
2288 static void __iwl4965_down(struct iwl_priv *priv)
2289 {
2290         unsigned long flags;
2291         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2292
2293         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2294
2295         if (!exit_pending)
2296                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2297
2298         iwl_leds_unregister(priv);
2299
2300         iwlcore_clear_stations_table(priv);
2301
2302         /* Unblock any waiting calls */
2303         wake_up_interruptible_all(&priv->wait_command_queue);
2304
2305         /* Wipe out the EXIT_PENDING status bit if we are not actually
2306          * exiting the module */
2307         if (!exit_pending)
2308                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2309
2310         /* stop and reset the on-board processor */
2311         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2312
2313         /* tell the device to stop sending interrupts */
2314         spin_lock_irqsave(&priv->lock, flags);
2315         iwl4965_disable_interrupts(priv);
2316         spin_unlock_irqrestore(&priv->lock, flags);
2317         iwl_synchronize_irq(priv);
2318
2319         if (priv->mac80211_registered)
2320                 ieee80211_stop_queues(priv->hw);
2321
2322         /* If we have not previously called iwl4965_init() then
2323          * clear all bits but the RF Kill and SUSPEND bits and return */
2324         if (!iwl_is_init(priv)) {
2325                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2326                                         STATUS_RF_KILL_HW |
2327                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2328                                         STATUS_RF_KILL_SW |
2329                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2330                                         STATUS_GEO_CONFIGURED |
2331                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2332                                         STATUS_IN_SUSPEND;
2333                 goto exit;
2334         }
2335
2336         /* ...otherwise clear out all the status bits but the RF Kill and
2337          * SUSPEND bits and continue taking the NIC down. */
2338         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2339                                 STATUS_RF_KILL_HW |
2340                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2341                                 STATUS_RF_KILL_SW |
2342                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2343                                 STATUS_GEO_CONFIGURED |
2344                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2345                                 STATUS_IN_SUSPEND |
2346                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2347                                 STATUS_FW_ERROR;
2348
2349         spin_lock_irqsave(&priv->lock, flags);
2350         iwl_clear_bit(priv, CSR_GP_CNTRL,
2351                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2352         spin_unlock_irqrestore(&priv->lock, flags);
2353
2354         iwl_txq_ctx_stop(priv);
2355         iwl_rxq_stop(priv);
2356
2357         spin_lock_irqsave(&priv->lock, flags);
2358         if (!iwl_grab_nic_access(priv)) {
2359                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2360                                          APMG_CLK_VAL_DMA_CLK_RQT);
2361                 iwl_release_nic_access(priv);
2362         }
2363         spin_unlock_irqrestore(&priv->lock, flags);
2364
2365         udelay(5);
2366
2367         /* FIXME: apm_ops.suspend(priv) */
2368         priv->cfg->ops->lib->apm_ops.reset(priv);
2369         priv->cfg->ops->lib->free_shared_mem(priv);
2370
2371  exit:
2372         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2373
2374         if (priv->ibss_beacon)
2375                 dev_kfree_skb(priv->ibss_beacon);
2376         priv->ibss_beacon = NULL;
2377
2378         /* clear out any free frames */
2379         iwl_clear_free_frames(priv);
2380 }
2381
2382 static void iwl4965_down(struct iwl_priv *priv)
2383 {
2384         mutex_lock(&priv->mutex);
2385         __iwl4965_down(priv);
2386         mutex_unlock(&priv->mutex);
2387
2388         iwl_cancel_deferred_work(priv);
2389 }
2390
2391 #define MAX_HW_RESTARTS 5
2392
2393 static int __iwl4965_up(struct iwl_priv *priv)
2394 {
2395         int i;
2396         int ret;
2397
2398         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2399                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2400                 return -EIO;
2401         }
2402
2403         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2404                 IWL_ERROR("ucode not available for device bringup\n");
2405                 return -EIO;
2406         }
2407
2408         /* If platform's RF_KILL switch is NOT set to KILL */
2409         if (iwl_read32(priv, CSR_GP_CNTRL) &
2410                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2411                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2412         else {
2413                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2414                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2415                         iwl_rfkill_set_hw_state(priv);
2416                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2417                         return -ENODEV;
2418                 }
2419         }
2420
2421         iwl_rfkill_set_hw_state(priv);
2422         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2423
2424         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2425         if (ret) {
2426                 IWL_ERROR("Unable to allocate shared memory\n");
2427                 return ret;
2428         }
2429
2430         ret = iwl_hw_nic_init(priv);
2431         if (ret) {
2432                 IWL_ERROR("Unable to init nic\n");
2433                 return ret;
2434         }
2435
2436         /* make sure rfkill handshake bits are cleared */
2437         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2438         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2439                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2440
2441         /* clear (again), then enable host interrupts */
2442         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2443         iwl4965_enable_interrupts(priv);
2444
2445         /* really make sure rfkill handshake bits are cleared */
2446         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2447         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2448
2449         /* Copy original ucode data image from disk into backup cache.
2450          * This will be used to initialize the on-board processor's
2451          * data SRAM for a clean start when the runtime program first loads. */
2452         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2453                priv->ucode_data.len);
2454
2455         /* We return success when we resume from suspend and rf_kill is on. */
2456         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2457             test_bit(STATUS_RF_KILL_SW, &priv->status))
2458                 return 0;
2459
2460         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2461
2462                 iwlcore_clear_stations_table(priv);
2463
2464                 /* load bootstrap state machine,
2465                  * load bootstrap program into processor's memory,
2466                  * prepare to load the "initialize" uCode */
2467                 ret = priv->cfg->ops->lib->load_ucode(priv);
2468
2469                 if (ret) {
2470                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2471                         continue;
2472                 }
2473
2474                 /* Clear out the uCode error bit if it is set */
2475                 clear_bit(STATUS_FW_ERROR, &priv->status);
2476
2477                 /* start card; "initialize" will load runtime ucode */
2478                 iwl4965_nic_start(priv);
2479
2480                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2481
2482                 return 0;
2483         }
2484
2485         set_bit(STATUS_EXIT_PENDING, &priv->status);
2486         __iwl4965_down(priv);
2487         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2488
2489         /* tried to restart and config the device for as long as our
2490          * patience could withstand */
2491         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2492         return -EIO;
2493 }
2494
2495
2496 /*****************************************************************************
2497  *
2498  * Workqueue callbacks
2499  *
2500  *****************************************************************************/
2501
2502 static void iwl_bg_init_alive_start(struct work_struct *data)
2503 {
2504         struct iwl_priv *priv =
2505             container_of(data, struct iwl_priv, init_alive_start.work);
2506
2507         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2508                 return;
2509
2510         mutex_lock(&priv->mutex);
2511         priv->cfg->ops->lib->init_alive_start(priv);
2512         mutex_unlock(&priv->mutex);
2513 }
2514
2515 static void iwl_bg_alive_start(struct work_struct *data)
2516 {
2517         struct iwl_priv *priv =
2518             container_of(data, struct iwl_priv, alive_start.work);
2519
2520         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2521                 return;
2522
2523         mutex_lock(&priv->mutex);
2524         iwl_alive_start(priv);
2525         mutex_unlock(&priv->mutex);
2526 }
2527
2528 static void iwl4965_bg_rf_kill(struct work_struct *work)
2529 {
2530         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2531
2532         wake_up_interruptible(&priv->wait_command_queue);
2533
2534         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2535                 return;
2536
2537         mutex_lock(&priv->mutex);
2538
2539         if (!iwl_is_rfkill(priv)) {
2540                 IWL_DEBUG(IWL_DL_RF_KILL,
2541                           "HW and/or SW RF Kill no longer active, restarting "
2542                           "device\n");
2543                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2544                         queue_work(priv->workqueue, &priv->restart);
2545         } else {
2546                 /* make sure mac80211 stop sending Tx frame */
2547                 if (priv->mac80211_registered)
2548                         ieee80211_stop_queues(priv->hw);
2549
2550                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2551                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2552                                           "disabled by SW switch\n");
2553                 else
2554                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2555                                     "Kill switch must be turned off for "
2556                                     "wireless networking to work.\n");
2557         }
2558         iwl_rfkill_set_hw_state(priv);
2559
2560         mutex_unlock(&priv->mutex);
2561 }
2562
2563 static void iwl4965_bg_set_monitor(struct work_struct *work)
2564 {
2565         struct iwl_priv *priv = container_of(work,
2566                                 struct iwl_priv, set_monitor);
2567         int ret;
2568
2569         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2570
2571         mutex_lock(&priv->mutex);
2572
2573         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2574
2575         if (ret) {
2576                 if (ret == -EAGAIN)
2577                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2578                 else
2579                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2580         }
2581
2582         mutex_unlock(&priv->mutex);
2583 }
2584
2585 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2586 {
2587         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2588                         run_time_calib_work);
2589
2590         mutex_lock(&priv->mutex);
2591
2592         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2593             test_bit(STATUS_SCANNING, &priv->status)) {
2594                 mutex_unlock(&priv->mutex);
2595                 return;
2596         }
2597
2598         if (priv->start_calib) {
2599                 iwl_chain_noise_calibration(priv, &priv->statistics);
2600
2601                 iwl_sensitivity_calibration(priv, &priv->statistics);
2602         }
2603
2604         mutex_unlock(&priv->mutex);
2605         return;
2606 }
2607
2608 static void iwl4965_bg_up(struct work_struct *data)
2609 {
2610         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2611
2612         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2613                 return;
2614
2615         mutex_lock(&priv->mutex);
2616         __iwl4965_up(priv);
2617         mutex_unlock(&priv->mutex);
2618 }
2619
2620 static void iwl4965_bg_restart(struct work_struct *data)
2621 {
2622         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2623
2624         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2625                 return;
2626
2627         iwl4965_down(priv);
2628         queue_work(priv->workqueue, &priv->up);
2629 }
2630
2631 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2632 {
2633         struct iwl_priv *priv =
2634             container_of(data, struct iwl_priv, rx_replenish);
2635
2636         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2637                 return;
2638
2639         mutex_lock(&priv->mutex);
2640         iwl_rx_replenish(priv);
2641         mutex_unlock(&priv->mutex);
2642 }
2643
2644 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2645
2646 static void iwl4965_post_associate(struct iwl_priv *priv)
2647 {
2648         struct ieee80211_conf *conf = NULL;
2649         int ret = 0;
2650         DECLARE_MAC_BUF(mac);
2651
2652         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2653                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2654                 return;
2655         }
2656
2657         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2658                         priv->assoc_id,
2659                         print_mac(mac, priv->active_rxon.bssid_addr));
2660
2661
2662         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2663                 return;
2664
2665
2666         if (!priv->vif || !priv->is_open)
2667                 return;
2668
2669         iwl_scan_cancel_timeout(priv, 200);
2670
2671         conf = ieee80211_get_hw_conf(priv->hw);
2672
2673         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2674         iwl4965_commit_rxon(priv);
2675
2676         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2677         iwl4965_setup_rxon_timing(priv);
2678         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2679                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2680         if (ret)
2681                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2682                             "Attempting to continue.\n");
2683
2684         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2685
2686         if (priv->current_ht_config.is_ht)
2687                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2688
2689         iwl_set_rxon_chain(priv);
2690         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2691
2692         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2693                         priv->assoc_id, priv->beacon_int);
2694
2695         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2696                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2697         else
2698                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2699
2700         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2701                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2702                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2703                 else
2704                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2705
2706                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2707                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2708
2709         }
2710
2711         iwl4965_commit_rxon(priv);
2712
2713         switch (priv->iw_mode) {
2714         case IEEE80211_IF_TYPE_STA:
2715                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2716                 break;
2717
2718         case IEEE80211_IF_TYPE_IBSS:
2719
2720                 /* assume default assoc id */
2721                 priv->assoc_id = 1;
2722
2723                 iwl_rxon_add_station(priv, priv->bssid, 0);
2724                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2725                 iwl4965_send_beacon_cmd(priv);
2726
2727                 break;
2728
2729         default:
2730                 IWL_ERROR("%s Should not be called in %d mode\n",
2731                                 __FUNCTION__, priv->iw_mode);
2732                 break;
2733         }
2734
2735         iwl4965_sequence_reset(priv);
2736
2737         /* Enable Rx differential gain and sensitivity calibrations */
2738         iwl_chain_noise_reset(priv);
2739         priv->start_calib = 1;
2740
2741         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2742                 priv->assoc_station_added = 1;
2743
2744         iwl4965_activate_qos(priv, 0);
2745
2746         iwl_power_update_mode(priv, 0);
2747         /* we have just associated, don't start scan too early */
2748         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2749 }
2750
2751
2752 static void iwl4965_bg_post_associate(struct work_struct *data)
2753 {
2754         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2755                                              post_associate.work);
2756
2757         mutex_lock(&priv->mutex);
2758         iwl4965_post_associate(priv);
2759         mutex_unlock(&priv->mutex);
2760
2761 }
2762
2763 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2764
2765 static void iwl_bg_scan_completed(struct work_struct *work)
2766 {
2767         struct iwl_priv *priv =
2768             container_of(work, struct iwl_priv, scan_completed);
2769
2770         IWL_DEBUG_SCAN("SCAN complete scan\n");
2771
2772         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2773                 return;
2774
2775         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2776                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2777
2778         ieee80211_scan_completed(priv->hw);
2779
2780         /* Since setting the TXPOWER may have been deferred while
2781          * performing the scan, fire one off */
2782         mutex_lock(&priv->mutex);
2783         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2784         mutex_unlock(&priv->mutex);
2785 }
2786
2787 /*****************************************************************************
2788  *
2789  * mac80211 entry point functions
2790  *
2791  *****************************************************************************/
2792
2793 #define UCODE_READY_TIMEOUT     (2 * HZ)
2794
2795 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2796 {
2797         struct iwl_priv *priv = hw->priv;
2798         int ret;
2799
2800         IWL_DEBUG_MAC80211("enter\n");
2801
2802         if (pci_enable_device(priv->pci_dev)) {
2803                 IWL_ERROR("Fail to pci_enable_device\n");
2804                 return -ENODEV;
2805         }
2806         pci_restore_state(priv->pci_dev);
2807         pci_enable_msi(priv->pci_dev);
2808
2809         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2810                           DRV_NAME, priv);
2811         if (ret) {
2812                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2813                 goto out_disable_msi;
2814         }
2815
2816         /* we should be verifying the device is ready to be opened */
2817         mutex_lock(&priv->mutex);
2818
2819         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2820         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2821          * ucode filename and max sizes are card-specific. */
2822
2823         if (!priv->ucode_code.len) {
2824                 ret = iwl4965_read_ucode(priv);
2825                 if (ret) {
2826                         IWL_ERROR("Could not read microcode: %d\n", ret);
2827                         mutex_unlock(&priv->mutex);
2828                         goto out_release_irq;
2829                 }
2830         }
2831
2832         ret = __iwl4965_up(priv);
2833
2834         mutex_unlock(&priv->mutex);
2835
2836         if (ret)
2837                 goto out_release_irq;
2838
2839         IWL_DEBUG_INFO("Start UP work done.\n");
2840
2841         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2842                 return 0;
2843
2844         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2845          * mac80211 will not be run successfully. */
2846         if (priv->ucode_type == UCODE_RT) {
2847                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2848                                 test_bit(STATUS_READY, &priv->status),
2849                                 UCODE_READY_TIMEOUT);
2850                 if (!ret) {
2851                         if (!test_bit(STATUS_READY, &priv->status)) {
2852                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2853                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2854                                 ret = -ETIMEDOUT;
2855                                 goto out_release_irq;
2856                         }
2857                 }
2858
2859                 priv->is_open = 1;
2860         }
2861         IWL_DEBUG_MAC80211("leave\n");
2862         return 0;
2863
2864 out_release_irq:
2865         free_irq(priv->pci_dev->irq, priv);
2866 out_disable_msi:
2867         pci_disable_msi(priv->pci_dev);
2868         pci_disable_device(priv->pci_dev);
2869         priv->is_open = 0;
2870         IWL_DEBUG_MAC80211("leave - failed\n");
2871         return ret;
2872 }
2873
2874 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2875 {
2876         struct iwl_priv *priv = hw->priv;
2877
2878         IWL_DEBUG_MAC80211("enter\n");
2879
2880         if (!priv->is_open) {
2881                 IWL_DEBUG_MAC80211("leave - skip\n");
2882                 return;
2883         }
2884
2885         priv->is_open = 0;
2886
2887         if (iwl_is_ready_rf(priv)) {
2888                 /* stop mac, cancel any scan request and clear
2889                  * RXON_FILTER_ASSOC_MSK BIT
2890                  */
2891                 mutex_lock(&priv->mutex);
2892                 iwl_scan_cancel_timeout(priv, 100);
2893                 cancel_delayed_work(&priv->post_associate);
2894                 mutex_unlock(&priv->mutex);
2895         }
2896
2897         iwl4965_down(priv);
2898
2899         flush_workqueue(priv->workqueue);
2900         free_irq(priv->pci_dev->irq, priv);
2901         pci_disable_msi(priv->pci_dev);
2902         pci_save_state(priv->pci_dev);
2903         pci_disable_device(priv->pci_dev);
2904
2905         IWL_DEBUG_MAC80211("leave\n");
2906 }
2907
2908 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2909 {
2910         struct iwl_priv *priv = hw->priv;
2911
2912         IWL_DEBUG_MAC80211("enter\n");
2913
2914         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2915                 IWL_DEBUG_MAC80211("leave - monitor\n");
2916                 return -1;
2917         }
2918
2919         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2920                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2921
2922         if (iwl_tx_skb(priv, skb))
2923                 dev_kfree_skb_any(skb);
2924
2925         IWL_DEBUG_MAC80211("leave\n");
2926         return 0;
2927 }
2928
2929 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2930                                  struct ieee80211_if_init_conf *conf)
2931 {
2932         struct iwl_priv *priv = hw->priv;
2933         unsigned long flags;
2934         DECLARE_MAC_BUF(mac);
2935
2936         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2937
2938         if (priv->vif) {
2939                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2940                 return -EOPNOTSUPP;
2941         }
2942
2943         spin_lock_irqsave(&priv->lock, flags);
2944         priv->vif = conf->vif;
2945
2946         spin_unlock_irqrestore(&priv->lock, flags);
2947
2948         mutex_lock(&priv->mutex);
2949
2950         if (conf->mac_addr) {
2951                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2952                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2953         }
2954
2955         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2956                 /* we are not ready, will run again when ready */
2957                 set_bit(STATUS_MODE_PENDING, &priv->status);
2958
2959         mutex_unlock(&priv->mutex);
2960
2961         IWL_DEBUG_MAC80211("leave\n");
2962         return 0;
2963 }
2964
2965 /**
2966  * iwl4965_mac_config - mac80211 config callback
2967  *
2968  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2969  * be set inappropriately and the driver currently sets the hardware up to
2970  * use it whenever needed.
2971  */
2972 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2973 {
2974         struct iwl_priv *priv = hw->priv;
2975         const struct iwl_channel_info *ch_info;
2976         unsigned long flags;
2977         int ret = 0;
2978         u16 channel;
2979
2980         mutex_lock(&priv->mutex);
2981         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2982
2983         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2984
2985
2986         if (priv->cfg->ops->lib->radio_kill_sw &&
2987             priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
2988                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2989                 mutex_unlock(&priv->mutex);
2990         }
2991
2992         if (!iwl_is_ready(priv)) {
2993                 IWL_DEBUG_MAC80211("leave - not ready\n");
2994                 ret = -EIO;
2995                 goto out;
2996         }
2997
2998         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2999                      test_bit(STATUS_SCANNING, &priv->status))) {
3000                 IWL_DEBUG_MAC80211("leave - scanning\n");
3001                 set_bit(STATUS_CONF_PENDING, &priv->status);
3002                 mutex_unlock(&priv->mutex);
3003                 return 0;
3004         }
3005
3006         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3007         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3008         if (!is_channel_valid(ch_info)) {
3009                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3010                 ret = -EINVAL;
3011                 goto out;
3012         }
3013
3014         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3015             !is_channel_ibss(ch_info)) {
3016                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3017                         conf->channel->hw_value, conf->channel->band);
3018                 ret = -EINVAL;
3019                 goto out;
3020         }
3021
3022         spin_lock_irqsave(&priv->lock, flags);
3023
3024         /* if we are switching from ht to 2.4 clear flags
3025          * from any ht related info since 2.4 does not
3026          * support ht */
3027         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3028 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3029             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3030 #endif
3031         )
3032                 priv->staging_rxon.flags = 0;
3033
3034         iwl_set_rxon_channel(priv, conf->channel->band, channel);
3035
3036         iwl_set_flags_for_band(priv, conf->channel->band);
3037
3038         /* The list of supported rates and rate mask can be different
3039          * for each band; since the band may have changed, reset
3040          * the rate mask to what mac80211 lists */
3041         iwl4965_set_rate(priv);
3042
3043         spin_unlock_irqrestore(&priv->lock, flags);
3044
3045 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3046         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3047                 iwl4965_hw_channel_switch(priv, conf->channel);
3048                 goto out;
3049         }
3050 #endif
3051
3052         if (!conf->radio_enabled) {
3053                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3054                 goto out;
3055         }
3056
3057         if (iwl_is_rfkill(priv)) {
3058                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3059                 ret = -EIO;
3060                 goto out;
3061         }
3062
3063         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
3064                            priv->tx_power_user_lmt, conf->power_level);
3065
3066         iwl_set_tx_power(priv, conf->power_level, false);
3067
3068         iwl4965_set_rate(priv);
3069
3070         if (memcmp(&priv->active_rxon,
3071                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3072                 iwl4965_commit_rxon(priv);
3073         else
3074                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3075
3076         IWL_DEBUG_MAC80211("leave\n");
3077
3078 out:
3079         clear_bit(STATUS_CONF_PENDING, &priv->status);
3080         mutex_unlock(&priv->mutex);
3081         return ret;
3082 }
3083
3084 static void iwl4965_config_ap(struct iwl_priv *priv)
3085 {
3086         int ret = 0;
3087
3088         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3089                 return;
3090
3091         /* The following should be done only at AP bring up */
3092         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3093
3094                 /* RXON - unassoc (to set timing command) */
3095                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3096                 iwl4965_commit_rxon(priv);
3097
3098                 /* RXON Timing */
3099                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3100                 iwl4965_setup_rxon_timing(priv);
3101                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3102                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3103                 if (ret)
3104                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3105                                         "Attempting to continue.\n");
3106
3107                 iwl_set_rxon_chain(priv);
3108
3109                 /* FIXME: what should be the assoc_id for AP? */
3110                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3111                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3112                         priv->staging_rxon.flags |=
3113                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3114                 else
3115                         priv->staging_rxon.flags &=
3116                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3117
3118                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3119                         if (priv->assoc_capability &
3120                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3121                                 priv->staging_rxon.flags |=
3122                                         RXON_FLG_SHORT_SLOT_MSK;
3123                         else
3124                                 priv->staging_rxon.flags &=
3125                                         ~RXON_FLG_SHORT_SLOT_MSK;
3126
3127                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3128                                 priv->staging_rxon.flags &=
3129                                         ~RXON_FLG_SHORT_SLOT_MSK;
3130                 }
3131                 /* restore RXON assoc */
3132                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3133                 iwl4965_commit_rxon(priv);
3134                 iwl4965_activate_qos(priv, 1);
3135                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3136         }
3137         iwl4965_send_beacon_cmd(priv);
3138
3139         /* FIXME - we need to add code here to detect a totally new
3140          * configuration, reset the AP, unassoc, rxon timing, assoc,
3141          * clear sta table, add BCAST sta... */
3142 }
3143
3144 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3145                                         struct ieee80211_vif *vif,
3146                                     struct ieee80211_if_conf *conf)
3147 {
3148         struct iwl_priv *priv = hw->priv;
3149         DECLARE_MAC_BUF(mac);
3150         unsigned long flags;
3151         int rc;
3152
3153         if (conf == NULL)
3154                 return -EIO;
3155
3156         if (priv->vif != vif) {
3157                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3158                 return 0;
3159         }
3160
3161         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3162             (!conf->beacon || !conf->ssid_len)) {
3163                 IWL_DEBUG_MAC80211
3164                     ("Leaving in AP mode because HostAPD is not ready.\n");
3165                 return 0;
3166         }
3167
3168         if (!iwl_is_alive(priv))
3169                 return -EAGAIN;
3170
3171         mutex_lock(&priv->mutex);
3172
3173         if (conf->bssid)
3174                 IWL_DEBUG_MAC80211("bssid: %s\n",
3175                                    print_mac(mac, conf->bssid));
3176
3177 /*
3178  * very dubious code was here; the probe filtering flag is never set:
3179  *
3180         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3181             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3182  */
3183
3184         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3185                 if (!conf->bssid) {
3186                         conf->bssid = priv->mac_addr;
3187                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3188                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3189                                            print_mac(mac, conf->bssid));
3190                 }
3191                 if (priv->ibss_beacon)
3192                         dev_kfree_skb(priv->ibss_beacon);
3193
3194                 priv->ibss_beacon = conf->beacon;
3195         }
3196
3197         if (iwl_is_rfkill(priv))
3198                 goto done;
3199
3200         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3201             !is_multicast_ether_addr(conf->bssid)) {
3202                 /* If there is currently a HW scan going on in the background
3203                  * then we need to cancel it else the RXON below will fail. */
3204                 if (iwl_scan_cancel_timeout(priv, 100)) {
3205                         IWL_WARNING("Aborted scan still in progress "
3206                                     "after 100ms\n");
3207                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3208                         mutex_unlock(&priv->mutex);
3209                         return -EAGAIN;
3210                 }
3211                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3212
3213                 /* TODO: Audit driver for usage of these members and see
3214                  * if mac80211 deprecates them (priv->bssid looks like it
3215                  * shouldn't be there, but I haven't scanned the IBSS code
3216                  * to verify) - jpk */
3217                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3218
3219                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3220                         iwl4965_config_ap(priv);
3221                 else {
3222                         rc = iwl4965_commit_rxon(priv);
3223                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3224                                 iwl_rxon_add_station(
3225                                         priv, priv->active_rxon.bssid_addr, 1);
3226                 }
3227
3228         } else {
3229                 iwl_scan_cancel_timeout(priv, 100);
3230                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3231                 iwl4965_commit_rxon(priv);
3232         }
3233
3234  done:
3235         spin_lock_irqsave(&priv->lock, flags);
3236         if (!conf->ssid_len)
3237                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3238         else
3239                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3240
3241         priv->essid_len = conf->ssid_len;
3242         spin_unlock_irqrestore(&priv->lock, flags);
3243
3244         IWL_DEBUG_MAC80211("leave\n");
3245         mutex_unlock(&priv->mutex);
3246
3247         return 0;
3248 }
3249
3250 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3251                                  unsigned int changed_flags,
3252                                  unsigned int *total_flags,
3253                                  int mc_count, struct dev_addr_list *mc_list)
3254 {
3255         /*
3256          * XXX: dummy
3257          * see also iwl4965_connection_init_rx_config
3258          */
3259         struct iwl_priv *priv = hw->priv;
3260         int new_flags = 0;
3261         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3262                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3263                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3264                                            IEEE80211_IF_TYPE_MNTR,
3265                                            changed_flags, *total_flags);
3266                         /* queue work 'cuz mac80211 is holding a lock which
3267                          * prevents us from issuing (synchronous) f/w cmds */
3268                         queue_work(priv->workqueue, &priv->set_monitor);
3269                         new_flags &= FIF_PROMISC_IN_BSS |
3270                                      FIF_OTHER_BSS |
3271                                      FIF_ALLMULTI;
3272                 }
3273         }
3274         *total_flags = new_flags;
3275 }
3276
3277 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3278                                      struct ieee80211_if_init_conf *conf)
3279 {
3280         struct iwl_priv *priv = hw->priv;
3281
3282         IWL_DEBUG_MAC80211("enter\n");
3283
3284         mutex_lock(&priv->mutex);
3285
3286         if (iwl_is_ready_rf(priv)) {
3287                 iwl_scan_cancel_timeout(priv, 100);
3288                 cancel_delayed_work(&priv->post_associate);
3289                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3290                 iwl4965_commit_rxon(priv);
3291         }
3292         if (priv->vif == conf->vif) {
3293                 priv->vif = NULL;
3294                 memset(priv->bssid, 0, ETH_ALEN);
3295                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3296                 priv->essid_len = 0;
3297         }
3298         mutex_unlock(&priv->mutex);
3299
3300         IWL_DEBUG_MAC80211("leave\n");
3301
3302 }
3303
3304 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3305 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3306                                      struct ieee80211_vif *vif,
3307                                      struct ieee80211_bss_conf *bss_conf,
3308                                      u32 changes)
3309 {
3310         struct iwl_priv *priv = hw->priv;
3311
3312         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3313
3314         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3315                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3316                                    bss_conf->use_short_preamble);
3317                 if (bss_conf->use_short_preamble)
3318                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3319                 else
3320                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3321         }
3322
3323         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3324                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3325                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3326                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3327                 else
3328                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3329         }
3330
3331         if (changes & BSS_CHANGED_HT) {
3332                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3333                 iwl4965_ht_conf(priv, bss_conf);
3334                 iwl_set_rxon_chain(priv);
3335         }
3336
3337         if (changes & BSS_CHANGED_ASSOC) {
3338                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3339                 /* This should never happen as this function should
3340                  * never be called from interrupt context. */
3341                 if (WARN_ON_ONCE(in_interrupt()))
3342                         return;
3343                 if (bss_conf->assoc) {
3344                         priv->assoc_id = bss_conf->aid;
3345                         priv->beacon_int = bss_conf->beacon_int;
3346                         priv->timestamp = bss_conf->timestamp;
3347                         priv->assoc_capability = bss_conf->assoc_capability;
3348                         priv->next_scan_jiffies = jiffies +
3349                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3350                         mutex_lock(&priv->mutex);
3351                         iwl4965_post_associate(priv);
3352                         mutex_unlock(&priv->mutex);
3353                 } else {
3354                         priv->assoc_id = 0;
3355                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3356                 }
3357         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3358                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3359                         iwl_send_rxon_assoc(priv);
3360         }
3361
3362 }
3363
3364 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3365 {
3366         int rc = 0;
3367         unsigned long flags;
3368         struct iwl_priv *priv = hw->priv;
3369
3370         IWL_DEBUG_MAC80211("enter\n");
3371
3372         mutex_lock(&priv->mutex);
3373         spin_lock_irqsave(&priv->lock, flags);
3374
3375         if (!iwl_is_ready_rf(priv)) {
3376                 rc = -EIO;
3377                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3378                 goto out_unlock;
3379         }
3380
3381         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3382                 rc = -EIO;
3383                 IWL_ERROR("ERROR: APs don't scan\n");
3384                 goto out_unlock;
3385         }
3386
3387         /* we don't schedule scan within next_scan_jiffies period */
3388         if (priv->next_scan_jiffies &&
3389                         time_after(priv->next_scan_jiffies, jiffies)) {
3390                 rc = -EAGAIN;
3391                 goto out_unlock;
3392         }
3393         /* if we just finished scan ask for delay */
3394         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3395                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3396                 rc = -EAGAIN;
3397                 goto out_unlock;
3398         }
3399         if (len) {
3400                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3401                                iwl_escape_essid(ssid, len), (int)len);
3402
3403                 priv->one_direct_scan = 1;
3404                 priv->direct_ssid_len = (u8)
3405                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3406                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3407         } else
3408                 priv->one_direct_scan = 0;
3409
3410         rc = iwl_scan_initiate(priv);
3411
3412         IWL_DEBUG_MAC80211("leave\n");
3413
3414 out_unlock:
3415         spin_unlock_irqrestore(&priv->lock, flags);
3416         mutex_unlock(&priv->mutex);
3417
3418         return rc;
3419 }
3420
3421 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3422                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3423                         u32 iv32, u16 *phase1key)
3424 {
3425         struct iwl_priv *priv = hw->priv;
3426         u8 sta_id = IWL_INVALID_STATION;
3427         unsigned long flags;
3428         __le16 key_flags = 0;
3429         int i;
3430         DECLARE_MAC_BUF(mac);
3431
3432         IWL_DEBUG_MAC80211("enter\n");
3433
3434         sta_id = iwl_find_station(priv, addr);
3435         if (sta_id == IWL_INVALID_STATION) {
3436                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3437                                    print_mac(mac, addr));
3438                 return;
3439         }
3440
3441         iwl_scan_cancel_timeout(priv, 100);
3442
3443         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3444         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3445         key_flags &= ~STA_KEY_FLG_INVALID;
3446
3447         if (sta_id == priv->hw_params.bcast_sta_id)
3448                 key_flags |= STA_KEY_MULTICAST_MSK;
3449
3450         spin_lock_irqsave(&priv->sta_lock, flags);
3451
3452         priv->stations[sta_id].sta.key.key_flags = key_flags;
3453         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3454
3455         for (i = 0; i < 5; i++)
3456                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3457                         cpu_to_le16(phase1key[i]);
3458
3459         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3460         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3461
3462         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3463
3464         spin_unlock_irqrestore(&priv->sta_lock, flags);
3465
3466         IWL_DEBUG_MAC80211("leave\n");
3467 }
3468
3469 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3470                            const u8 *local_addr, const u8 *addr,
3471                            struct ieee80211_key_conf *key)
3472 {
3473         struct iwl_priv *priv = hw->priv;
3474         DECLARE_MAC_BUF(mac);
3475         int ret = 0;
3476         u8 sta_id = IWL_INVALID_STATION;
3477         u8 is_default_wep_key = 0;
3478
3479         IWL_DEBUG_MAC80211("enter\n");
3480
3481         if (priv->hw_params.sw_crypto) {
3482                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3483                 return -EOPNOTSUPP;
3484         }
3485
3486         if (is_zero_ether_addr(addr))
3487                 /* only support pairwise keys */
3488                 return -EOPNOTSUPP;
3489
3490         sta_id = iwl_find_station(priv, addr);
3491         if (sta_id == IWL_INVALID_STATION) {
3492                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3493                                    print_mac(mac, addr));
3494                 return -EINVAL;
3495
3496         }
3497
3498         mutex_lock(&priv->mutex);
3499         iwl_scan_cancel_timeout(priv, 100);
3500         mutex_unlock(&priv->mutex);
3501
3502         /* If we are getting WEP group key and we didn't receive any key mapping
3503          * so far, we are in legacy wep mode (group key only), otherwise we are
3504          * in 1X mode.
3505          * In legacy wep mode, we use another host command to the uCode */
3506         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3507                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3508                 if (cmd == SET_KEY)
3509                         is_default_wep_key = !priv->key_mapping_key;
3510                 else
3511                         is_default_wep_key =
3512                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3513         }
3514
3515         switch (cmd) {
3516         case SET_KEY:
3517                 if (is_default_wep_key)
3518                         ret = iwl_set_default_wep_key(priv, key);
3519                 else
3520                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3521
3522                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3523                 break;
3524         case DISABLE_KEY:
3525                 if (is_default_wep_key)
3526                         ret = iwl_remove_default_wep_key(priv, key);
3527                 else
3528                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3529
3530                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3531                 break;
3532         default:
3533                 ret = -EINVAL;
3534         }
3535
3536         IWL_DEBUG_MAC80211("leave\n");
3537
3538         return ret;
3539 }
3540
3541 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3542                            const struct ieee80211_tx_queue_params *params)
3543 {
3544         struct iwl_priv *priv = hw->priv;
3545         unsigned long flags;
3546         int q;
3547
3548         IWL_DEBUG_MAC80211("enter\n");
3549
3550         if (!iwl_is_ready_rf(priv)) {
3551                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3552                 return -EIO;
3553         }
3554
3555         if (queue >= AC_NUM) {
3556                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3557                 return 0;
3558         }
3559
3560         if (!priv->qos_data.qos_enable) {
3561                 priv->qos_data.qos_active = 0;
3562                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3563                 return 0;
3564         }
3565         q = AC_NUM - 1 - queue;
3566
3567         spin_lock_irqsave(&priv->lock, flags);
3568
3569         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3570         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3571         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3572         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3573                         cpu_to_le16((params->txop * 32));
3574
3575         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3576         priv->qos_data.qos_active = 1;
3577
3578         spin_unlock_irqrestore(&priv->lock, flags);
3579
3580         mutex_lock(&priv->mutex);
3581         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3582                 iwl4965_activate_qos(priv, 1);
3583         else if (priv->assoc_id && iwl_is_associated(priv))
3584                 iwl4965_activate_qos(priv, 0);
3585
3586         mutex_unlock(&priv->mutex);
3587
3588         IWL_DEBUG_MAC80211("leave\n");
3589         return 0;
3590 }
3591
3592 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3593                                 struct ieee80211_tx_queue_stats *stats)
3594 {
3595         struct iwl_priv *priv = hw->priv;
3596         int i, avail;
3597         struct iwl_tx_queue *txq;
3598         struct iwl_queue *q;
3599         unsigned long flags;
3600
3601         IWL_DEBUG_MAC80211("enter\n");
3602
3603         if (!iwl_is_ready_rf(priv)) {
3604                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3605                 return -EIO;
3606         }
3607
3608         spin_lock_irqsave(&priv->lock, flags);
3609
3610         for (i = 0; i < AC_NUM; i++) {
3611                 txq = &priv->txq[i];
3612                 q = &txq->q;
3613                 avail = iwl_queue_space(q);
3614
3615                 stats[i].len = q->n_window - avail;
3616                 stats[i].limit = q->n_window - q->high_mark;
3617                 stats[i].count = q->n_window;
3618
3619         }
3620         spin_unlock_irqrestore(&priv->lock, flags);
3621
3622         IWL_DEBUG_MAC80211("leave\n");
3623
3624         return 0;
3625 }
3626
3627 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3628                              struct ieee80211_low_level_stats *stats)
3629 {
3630         struct iwl_priv *priv = hw->priv;
3631
3632         priv = hw->priv;
3633         IWL_DEBUG_MAC80211("enter\n");
3634         IWL_DEBUG_MAC80211("leave\n");
3635
3636         return 0;
3637 }
3638
3639 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3640 {
3641         struct iwl_priv *priv;
3642
3643         priv = hw->priv;
3644         IWL_DEBUG_MAC80211("enter\n");
3645         IWL_DEBUG_MAC80211("leave\n");
3646
3647         return 0;
3648 }
3649
3650 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3651 {
3652         struct iwl_priv *priv = hw->priv;
3653         unsigned long flags;
3654
3655         mutex_lock(&priv->mutex);
3656         IWL_DEBUG_MAC80211("enter\n");
3657
3658         priv->lq_mngr.lq_ready = 0;
3659         spin_lock_irqsave(&priv->lock, flags);
3660         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3661         spin_unlock_irqrestore(&priv->lock, flags);
3662
3663         iwl_reset_qos(priv);
3664
3665         cancel_delayed_work(&priv->post_associate);
3666
3667         spin_lock_irqsave(&priv->lock, flags);
3668         priv->assoc_id = 0;
3669         priv->assoc_capability = 0;
3670         priv->assoc_station_added = 0;
3671
3672         /* new association get rid of ibss beacon skb */
3673         if (priv->ibss_beacon)
3674                 dev_kfree_skb(priv->ibss_beacon);
3675
3676         priv->ibss_beacon = NULL;
3677
3678         priv->beacon_int = priv->hw->conf.beacon_int;
3679         priv->timestamp = 0;
3680         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3681                 priv->beacon_int = 0;
3682
3683         spin_unlock_irqrestore(&priv->lock, flags);
3684
3685         if (!iwl_is_ready_rf(priv)) {
3686                 IWL_DEBUG_MAC80211("leave - not ready\n");
3687                 mutex_unlock(&priv->mutex);
3688                 return;
3689         }
3690
3691         /* we are restarting association process
3692          * clear RXON_FILTER_ASSOC_MSK bit
3693          */
3694         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3695                 iwl_scan_cancel_timeout(priv, 100);
3696                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3697                 iwl4965_commit_rxon(priv);
3698         }
3699
3700         iwl_power_update_mode(priv, 0);
3701
3702         /* Per mac80211.h: This is only used in IBSS mode... */
3703         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3704
3705                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3706                 mutex_unlock(&priv->mutex);
3707                 return;
3708         }
3709
3710         iwl4965_set_rate(priv);
3711
3712         mutex_unlock(&priv->mutex);
3713
3714         IWL_DEBUG_MAC80211("leave\n");
3715 }
3716
3717 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3718 {
3719         struct iwl_priv *priv = hw->priv;
3720         unsigned long flags;
3721
3722         mutex_lock(&priv->mutex);
3723         IWL_DEBUG_MAC80211("enter\n");
3724
3725         if (!iwl_is_ready_rf(priv)) {
3726                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3727                 mutex_unlock(&priv->mutex);
3728                 return -EIO;
3729         }
3730
3731         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3732                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3733                 mutex_unlock(&priv->mutex);
3734                 return -EIO;
3735         }
3736
3737         spin_lock_irqsave(&priv->lock, flags);
3738
3739         if (priv->ibss_beacon)
3740                 dev_kfree_skb(priv->ibss_beacon);
3741
3742         priv->ibss_beacon = skb;
3743
3744         priv->assoc_id = 0;
3745
3746         IWL_DEBUG_MAC80211("leave\n");
3747         spin_unlock_irqrestore(&priv->lock, flags);
3748
3749         iwl_reset_qos(priv);
3750
3751         iwl4965_post_associate(priv);
3752
3753         mutex_unlock(&priv->mutex);
3754
3755         return 0;
3756 }
3757
3758 /*****************************************************************************
3759  *
3760  * sysfs attributes
3761  *
3762  *****************************************************************************/
3763
3764 #ifdef CONFIG_IWLWIFI_DEBUG
3765
3766 /*
3767  * The following adds a new attribute to the sysfs representation
3768  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3769  * used for controlling the debug level.
3770  *
3771  * See the level definitions in iwl for details.
3772  */
3773
3774 static ssize_t show_debug_level(struct device *d,
3775                                 struct device_attribute *attr, char *buf)
3776 {
3777         struct iwl_priv *priv = d->driver_data;
3778
3779         return sprintf(buf, "0x%08X\n", priv->debug_level);
3780 }
3781 static ssize_t store_debug_level(struct device *d,
3782                                 struct device_attribute *attr,
3783                                  const char *buf, size_t count)
3784 {
3785         struct iwl_priv *priv = d->driver_data;
3786         char *p = (char *)buf;
3787         u32 val;
3788
3789         val = simple_strtoul(p, &p, 0);
3790         if (p == buf)
3791                 printk(KERN_INFO DRV_NAME
3792                        ": %s is not in hex or decimal form.\n", buf);
3793         else
3794                 priv->debug_level = val;
3795
3796         return strnlen(buf, count);
3797 }
3798
3799 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3800                         show_debug_level, store_debug_level);
3801
3802
3803 #endif /* CONFIG_IWLWIFI_DEBUG */
3804
3805
3806 static ssize_t show_version(struct device *d,
3807                                 struct device_attribute *attr, char *buf)
3808 {
3809         struct iwl_priv *priv = d->driver_data;
3810         struct iwl_alive_resp *palive = &priv->card_alive;
3811
3812         if (palive->is_valid)
3813                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3814                                     "fw type: 0x%01X 0x%01X\n",
3815                                 palive->ucode_major, palive->ucode_minor,
3816                                 palive->sw_rev[0], palive->sw_rev[1],
3817                                 palive->ver_type, palive->ver_subtype);
3818
3819         else
3820                 return sprintf(buf, "fw not loaded\n");
3821 }
3822
3823 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3824
3825 static ssize_t show_temperature(struct device *d,
3826                                 struct device_attribute *attr, char *buf)
3827 {
3828         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3829
3830         if (!iwl_is_alive(priv))
3831                 return -EAGAIN;
3832
3833         return sprintf(buf, "%d\n", priv->temperature);
3834 }
3835
3836 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3837
3838 static ssize_t show_rs_window(struct device *d,
3839                               struct device_attribute *attr,
3840                               char *buf)
3841 {
3842         struct iwl_priv *priv = d->driver_data;
3843         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3844 }
3845 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3846
3847 static ssize_t show_tx_power(struct device *d,
3848                              struct device_attribute *attr, char *buf)
3849 {
3850         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3851         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3852 }
3853
3854 static ssize_t store_tx_power(struct device *d,
3855                               struct device_attribute *attr,
3856                               const char *buf, size_t count)
3857 {
3858         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3859         char *p = (char *)buf;
3860         u32 val;
3861
3862         val = simple_strtoul(p, &p, 10);
3863         if (p == buf)
3864                 printk(KERN_INFO DRV_NAME
3865                        ": %s is not in decimal form.\n", buf);
3866         else
3867                 iwl_set_tx_power(priv, val, false);
3868
3869         return count;
3870 }
3871
3872 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3873
3874 static ssize_t show_flags(struct device *d,
3875                           struct device_attribute *attr, char *buf)
3876 {
3877         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3878
3879         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3880 }
3881
3882 static ssize_t store_flags(struct device *d,
3883                            struct device_attribute *attr,
3884                            const char *buf, size_t count)
3885 {
3886         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3887         u32 flags = simple_strtoul(buf, NULL, 0);
3888
3889         mutex_lock(&priv->mutex);
3890         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3891                 /* Cancel any currently running scans... */
3892                 if (iwl_scan_cancel_timeout(priv, 100))
3893                         IWL_WARNING("Could not cancel scan.\n");
3894                 else {
3895                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3896                                        flags);
3897                         priv->staging_rxon.flags = cpu_to_le32(flags);
3898                         iwl4965_commit_rxon(priv);
3899                 }
3900         }
3901         mutex_unlock(&priv->mutex);
3902
3903         return count;
3904 }
3905
3906 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3907
3908 static ssize_t show_filter_flags(struct device *d,
3909                                  struct device_attribute *attr, char *buf)
3910 {
3911         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3912
3913         return sprintf(buf, "0x%04X\n",
3914                 le32_to_cpu(priv->active_rxon.filter_flags));
3915 }
3916
3917 static ssize_t store_filter_flags(struct device *d,
3918                                   struct device_attribute *attr,
3919                                   const char *buf, size_t count)
3920 {
3921         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3922         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3923
3924         mutex_lock(&priv->mutex);
3925         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3926                 /* Cancel any currently running scans... */
3927                 if (iwl_scan_cancel_timeout(priv, 100))
3928                         IWL_WARNING("Could not cancel scan.\n");
3929                 else {
3930                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3931                                        "0x%04X\n", filter_flags);
3932                         priv->staging_rxon.filter_flags =
3933                                 cpu_to_le32(filter_flags);
3934                         iwl4965_commit_rxon(priv);
3935                 }
3936         }
3937         mutex_unlock(&priv->mutex);
3938
3939         return count;
3940 }
3941
3942 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3943                    store_filter_flags);
3944
3945 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3946
3947 static ssize_t show_measurement(struct device *d,
3948                                 struct device_attribute *attr, char *buf)
3949 {
3950         struct iwl_priv *priv = dev_get_drvdata(d);
3951         struct iwl4965_spectrum_notification measure_report;
3952         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3953         u8 *data = (u8 *) & measure_report;
3954         unsigned long flags;
3955
3956         spin_lock_irqsave(&priv->lock, flags);
3957         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3958                 spin_unlock_irqrestore(&priv->lock, flags);
3959                 return 0;
3960         }
3961         memcpy(&measure_report, &priv->measure_report, size);
3962         priv->measurement_status = 0;
3963         spin_unlock_irqrestore(&priv->lock, flags);
3964
3965         while (size && (PAGE_SIZE - len)) {
3966                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3967                                    PAGE_SIZE - len, 1);
3968                 len = strlen(buf);
3969                 if (PAGE_SIZE - len)
3970                         buf[len++] = '\n';
3971
3972                 ofs += 16;
3973                 size -= min(size, 16U);
3974         }
3975
3976         return len;
3977 }
3978
3979 static ssize_t store_measurement(struct device *d,
3980                                  struct device_attribute *attr,
3981                                  const char *buf, size_t count)
3982 {
3983         struct iwl_priv *priv = dev_get_drvdata(d);
3984         struct ieee80211_measurement_params params = {
3985                 .channel = le16_to_cpu(priv->active_rxon.channel),
3986                 .start_time = cpu_to_le64(priv->last_tsf),
3987                 .duration = cpu_to_le16(1),
3988         };
3989         u8 type = IWL_MEASURE_BASIC;
3990         u8 buffer[32];
3991         u8 channel;
3992
3993         if (count) {
3994                 char *p = buffer;
3995                 strncpy(buffer, buf, min(sizeof(buffer), count));
3996                 channel = simple_strtoul(p, NULL, 0);
3997                 if (channel)
3998                         params.channel = channel;
3999
4000                 p = buffer;
4001                 while (*p && *p != ' ')
4002                         p++;
4003                 if (*p)
4004                         type = simple_strtoul(p + 1, NULL, 0);
4005         }
4006
4007         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4008                        "channel %d (for '%s')\n", type, params.channel, buf);
4009         iwl4965_get_measurement(priv, &params, type);
4010
4011         return count;
4012 }
4013
4014 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4015                    show_measurement, store_measurement);
4016 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4017
4018 static ssize_t store_retry_rate(struct device *d,
4019                                 struct device_attribute *attr,
4020                                 const char *buf, size_t count)
4021 {
4022         struct iwl_priv *priv = dev_get_drvdata(d);
4023
4024         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4025         if (priv->retry_rate <= 0)
4026                 priv->retry_rate = 1;
4027
4028         return count;
4029 }
4030
4031 static ssize_t show_retry_rate(struct device *d,
4032                                struct device_attribute *attr, char *buf)
4033 {
4034         struct iwl_priv *priv = dev_get_drvdata(d);
4035         return sprintf(buf, "%d", priv->retry_rate);
4036 }
4037
4038 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4039                    store_retry_rate);
4040
4041 static ssize_t store_power_level(struct device *d,
4042                                  struct device_attribute *attr,
4043                                  const char *buf, size_t count)
4044 {
4045         struct iwl_priv *priv = dev_get_drvdata(d);
4046         int rc;
4047         int mode;
4048
4049         mode = simple_strtoul(buf, NULL, 0);
4050         mutex_lock(&priv->mutex);
4051
4052         if (!iwl_is_ready(priv)) {
4053                 rc = -EAGAIN;
4054                 goto out;
4055         }
4056
4057         rc = iwl_power_set_user_mode(priv, mode);
4058         if (rc) {
4059                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4060                 goto out;
4061         }
4062         rc = count;
4063
4064  out:
4065         mutex_unlock(&priv->mutex);
4066         return rc;
4067 }
4068
4069 #define MAX_WX_STRING 80
4070
4071 /* Values are in microsecond */
4072 static const s32 timeout_duration[] = {
4073         350000,
4074         250000,
4075         75000,
4076         37000,
4077         25000,
4078 };
4079 static const s32 period_duration[] = {
4080         400000,
4081         700000,
4082         1000000,
4083         1000000,
4084         1000000
4085 };
4086
4087 static ssize_t show_power_level(struct device *d,
4088                                 struct device_attribute *attr, char *buf)
4089 {
4090         struct iwl_priv *priv = dev_get_drvdata(d);
4091         int level = priv->power_data.power_mode;
4092         char *p = buf;
4093
4094         p += sprintf(p, "%d ", level);
4095         switch (level) {
4096         case IWL_POWER_MODE_CAM:
4097         case IWL_POWER_AC:
4098                 p += sprintf(p, "(AC)");
4099                 break;
4100         case IWL_POWER_BATTERY:
4101                 p += sprintf(p, "(BATTERY)");
4102                 break;
4103         default:
4104                 p += sprintf(p,
4105                              "(Timeout %dms, Period %dms)",
4106                              timeout_duration[level - 1] / 1000,
4107                              period_duration[level - 1] / 1000);
4108         }
4109 /*
4110         if (!(priv->power_mode & IWL_POWER_ENABLED))
4111                 p += sprintf(p, " OFF\n");
4112         else
4113                 p += sprintf(p, " \n");
4114 */
4115         p += sprintf(p, " \n");
4116         return (p - buf + 1);
4117 }
4118
4119 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4120                    store_power_level);
4121
4122 static ssize_t show_channels(struct device *d,
4123                              struct device_attribute *attr, char *buf)
4124 {
4125
4126         struct iwl_priv *priv = dev_get_drvdata(d);
4127         struct ieee80211_channel *channels = NULL;
4128         const struct ieee80211_supported_band *supp_band = NULL;
4129         int len = 0, i;
4130         int count = 0;
4131
4132         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
4133                 return -EAGAIN;
4134
4135         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
4136         channels = supp_band->channels;
4137         count = supp_band->n_channels;
4138
4139         len += sprintf(&buf[len],
4140                         "Displaying %d channels in 2.4GHz band "
4141                         "(802.11bg):\n", count);
4142
4143         for (i = 0; i < count; i++)
4144                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4145                                 ieee80211_frequency_to_channel(
4146                                 channels[i].center_freq),
4147                                 channels[i].max_power,
4148                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
4149                                 " (IEEE 802.11h required)" : "",
4150                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4151                                 || (channels[i].flags &
4152                                 IEEE80211_CHAN_RADAR)) ? "" :
4153                                 ", IBSS",
4154                                 channels[i].flags &
4155                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4156                                 "passive only" : "active/passive");
4157
4158         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4159         channels = supp_band->channels;
4160         count = supp_band->n_channels;
4161
4162         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4163                         "(802.11a):\n", count);
4164
4165         for (i = 0; i < count; i++)
4166                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4167                                 ieee80211_frequency_to_channel(
4168                                 channels[i].center_freq),
4169                                 channels[i].max_power,
4170                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
4171                                 " (IEEE 802.11h required)" : "",
4172                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4173                                 || (channels[i].flags &
4174                                 IEEE80211_CHAN_RADAR)) ? "" :
4175                                 ", IBSS",
4176                                 channels[i].flags &
4177                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4178                                 "passive only" : "active/passive");
4179
4180         return len;
4181 }
4182
4183 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4184
4185 static ssize_t show_statistics(struct device *d,
4186                                struct device_attribute *attr, char *buf)
4187 {
4188         struct iwl_priv *priv = dev_get_drvdata(d);
4189         u32 size = sizeof(struct iwl4965_notif_statistics);
4190         u32 len = 0, ofs = 0;
4191         u8 *data = (u8 *) & priv->statistics;
4192         int rc = 0;
4193
4194         if (!iwl_is_alive(priv))
4195                 return -EAGAIN;
4196
4197         mutex_lock(&priv->mutex);
4198         rc = iwl_send_statistics_request(priv, 0);
4199         mutex_unlock(&priv->mutex);
4200
4201         if (rc) {
4202                 len = sprintf(buf,
4203                               "Error sending statistics request: 0x%08X\n", rc);
4204                 return len;
4205         }
4206
4207         while (size && (PAGE_SIZE - len)) {
4208                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4209                                    PAGE_SIZE - len, 1);
4210                 len = strlen(buf);
4211                 if (PAGE_SIZE - len)
4212                         buf[len++] = '\n';
4213
4214                 ofs += 16;
4215                 size -= min(size, 16U);
4216         }
4217
4218         return len;
4219 }
4220
4221 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4222
4223 static ssize_t show_status(struct device *d,
4224                            struct device_attribute *attr, char *buf)
4225 {
4226         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4227         if (!iwl_is_alive(priv))
4228                 return -EAGAIN;
4229         return sprintf(buf, "0x%08x\n", (int)priv->status);
4230 }
4231
4232 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4233
4234 /*****************************************************************************
4235  *
4236  * driver setup and teardown
4237  *
4238  *****************************************************************************/
4239
4240 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4241 {
4242         priv->workqueue = create_workqueue(DRV_NAME);
4243
4244         init_waitqueue_head(&priv->wait_command_queue);
4245
4246         INIT_WORK(&priv->up, iwl4965_bg_up);
4247         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4248         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4249         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4250         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4251         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4252         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4253         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4254         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4255         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4256
4257         /* FIXME : remove when resolved PENDING */
4258         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4259         iwl_setup_scan_deferred_work(priv);
4260
4261         if (priv->cfg->ops->lib->setup_deferred_work)
4262                 priv->cfg->ops->lib->setup_deferred_work(priv);
4263
4264         init_timer(&priv->statistics_periodic);
4265         priv->statistics_periodic.data = (unsigned long)priv;
4266         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4267
4268         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4269                      iwl4965_irq_tasklet, (unsigned long)priv);
4270 }
4271
4272 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4273 {
4274         if (priv->cfg->ops->lib->cancel_deferred_work)
4275                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4276
4277         cancel_delayed_work_sync(&priv->init_alive_start);
4278         cancel_delayed_work(&priv->scan_check);
4279         cancel_delayed_work(&priv->alive_start);
4280         cancel_delayed_work(&priv->post_associate);
4281         cancel_work_sync(&priv->beacon_update);
4282         del_timer_sync(&priv->statistics_periodic);
4283 }
4284
4285 static struct attribute *iwl4965_sysfs_entries[] = {
4286         &dev_attr_channels.attr,
4287         &dev_attr_flags.attr,
4288         &dev_attr_filter_flags.attr,
4289 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4290         &dev_attr_measurement.attr,
4291 #endif
4292         &dev_attr_power_level.attr,
4293         &dev_attr_retry_rate.attr,
4294         &dev_attr_rs_window.attr,
4295         &dev_attr_statistics.attr,
4296         &dev_attr_status.attr,
4297         &dev_attr_temperature.attr,
4298         &dev_attr_tx_power.attr,
4299 #ifdef CONFIG_IWLWIFI_DEBUG
4300         &dev_attr_debug_level.attr,
4301 #endif
4302         &dev_attr_version.attr,
4303
4304         NULL
4305 };
4306
4307 static struct attribute_group iwl4965_attribute_group = {
4308         .name = NULL,           /* put in device directory */
4309         .attrs = iwl4965_sysfs_entries,
4310 };
4311
4312 static struct ieee80211_ops iwl4965_hw_ops = {
4313         .tx = iwl4965_mac_tx,
4314         .start = iwl4965_mac_start,
4315         .stop = iwl4965_mac_stop,
4316         .add_interface = iwl4965_mac_add_interface,
4317         .remove_interface = iwl4965_mac_remove_interface,
4318         .config = iwl4965_mac_config,
4319         .config_interface = iwl4965_mac_config_interface,
4320         .configure_filter = iwl4965_configure_filter,
4321         .set_key = iwl4965_mac_set_key,
4322         .update_tkip_key = iwl4965_mac_update_tkip_key,
4323         .get_stats = iwl4965_mac_get_stats,
4324         .get_tx_stats = iwl4965_mac_get_tx_stats,
4325         .conf_tx = iwl4965_mac_conf_tx,
4326         .get_tsf = iwl4965_mac_get_tsf,
4327         .reset_tsf = iwl4965_mac_reset_tsf,
4328         .beacon_update = iwl4965_mac_beacon_update,
4329         .bss_info_changed = iwl4965_bss_info_changed,
4330         .ampdu_action = iwl4965_mac_ampdu_action,
4331         .hw_scan = iwl4965_mac_hw_scan
4332 };
4333
4334 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4335 {
4336         int err = 0;
4337         struct iwl_priv *priv;
4338         struct ieee80211_hw *hw;
4339         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4340         unsigned long flags;
4341         DECLARE_MAC_BUF(mac);
4342
4343         /************************
4344          * 1. Allocating HW data
4345          ************************/
4346
4347         /* Disabling hardware scan means that mac80211 will perform scans
4348          * "the hard way", rather than using device's scan. */
4349         if (cfg->mod_params->disable_hw_scan) {
4350                 if (cfg->mod_params->debug & IWL_DL_INFO)
4351                         dev_printk(KERN_DEBUG, &(pdev->dev),
4352                                    "Disabling hw_scan\n");
4353                 iwl4965_hw_ops.hw_scan = NULL;
4354         }
4355
4356         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4357         if (!hw) {
4358                 err = -ENOMEM;
4359                 goto out;
4360         }
4361         priv = hw->priv;
4362         /* At this point both hw and priv are allocated. */
4363
4364         SET_IEEE80211_DEV(hw, &pdev->dev);
4365
4366         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4367         priv->cfg = cfg;
4368         priv->pci_dev = pdev;
4369
4370 #ifdef CONFIG_IWLWIFI_DEBUG
4371         priv->debug_level = priv->cfg->mod_params->debug;
4372         atomic_set(&priv->restrict_refcnt, 0);
4373 #endif
4374
4375         /**************************
4376          * 2. Initializing PCI bus
4377          **************************/
4378         if (pci_enable_device(pdev)) {
4379                 err = -ENODEV;
4380                 goto out_ieee80211_free_hw;
4381         }
4382
4383         pci_set_master(pdev);
4384
4385         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4386         if (!err)
4387                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4388         if (err) {
4389                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4390                 if (!err)
4391                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4392                 /* both attempts failed: */
4393                 if (err) {
4394                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4395                                 DRV_NAME);
4396                         goto out_pci_disable_device;
4397                 }
4398         }
4399
4400         err = pci_request_regions(pdev, DRV_NAME);
4401         if (err)
4402                 goto out_pci_disable_device;
4403
4404         pci_set_drvdata(pdev, priv);
4405
4406         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4407          * PCI Tx retries from interfering with C3 CPU state */
4408         pci_write_config_byte(pdev, 0x41, 0x00);
4409
4410         /***********************
4411          * 3. Read REV register
4412          ***********************/
4413         priv->hw_base = pci_iomap(pdev, 0, 0);
4414         if (!priv->hw_base) {
4415                 err = -ENODEV;
4416                 goto out_pci_release_regions;
4417         }
4418
4419         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4420                 (unsigned long long) pci_resource_len(pdev, 0));
4421         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4422
4423         iwl_hw_detect(priv);
4424         printk(KERN_INFO DRV_NAME
4425                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4426                 priv->cfg->name, priv->hw_rev);
4427
4428         /* amp init */
4429         err = priv->cfg->ops->lib->apm_ops.init(priv);
4430         if (err < 0) {
4431                 IWL_DEBUG_INFO("Failed to init APMG\n");
4432                 goto out_iounmap;
4433         }
4434         /*****************
4435          * 4. Read EEPROM
4436          *****************/
4437         /* Read the EEPROM */
4438         err = iwl_eeprom_init(priv);
4439         if (err) {
4440                 IWL_ERROR("Unable to init EEPROM\n");
4441                 goto out_iounmap;
4442         }
4443         err = iwl_eeprom_check_version(priv);
4444         if (err)
4445                 goto out_iounmap;
4446
4447         /* extract MAC Address */
4448         iwl_eeprom_get_mac(priv, priv->mac_addr);
4449         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4450         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4451
4452         /************************
4453          * 5. Setup HW constants
4454          ************************/
4455         /* Device-specific setup */
4456         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4457                 IWL_ERROR("failed to set hw parameters\n");
4458                 goto out_free_eeprom;
4459         }
4460
4461         /*******************
4462          * 6. Setup priv
4463          *******************/
4464
4465         err = iwl_init_drv(priv);
4466         if (err)
4467                 goto out_free_eeprom;
4468         /* At this point both hw and priv are initialized. */
4469
4470         /**********************************
4471          * 7. Initialize module parameters
4472          **********************************/
4473
4474         /* Disable radio (SW RF KILL) via parameter when loading driver */
4475         if (priv->cfg->mod_params->disable) {
4476                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4477                 IWL_DEBUG_INFO("Radio disabled.\n");
4478         }
4479
4480         /********************
4481          * 8. Setup services
4482          ********************/
4483         spin_lock_irqsave(&priv->lock, flags);
4484         iwl4965_disable_interrupts(priv);
4485         spin_unlock_irqrestore(&priv->lock, flags);
4486
4487         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4488         if (err) {
4489                 IWL_ERROR("failed to create sysfs device attributes\n");
4490                 goto out_uninit_drv;
4491         }
4492
4493
4494         iwl_setup_deferred_work(priv);
4495         iwl4965_setup_rx_handlers(priv);
4496
4497         /********************
4498          * 9. Conclude
4499          ********************/
4500         pci_save_state(pdev);
4501         pci_disable_device(pdev);
4502
4503         /**********************************
4504          * 10. Setup and register mac80211
4505          **********************************/
4506
4507         err = iwl_setup_mac(priv);
4508         if (err)
4509                 goto out_remove_sysfs;
4510
4511         err = iwl_dbgfs_register(priv, DRV_NAME);
4512         if (err)
4513                 IWL_ERROR("failed to create debugfs files\n");
4514
4515         err = iwl_rfkill_init(priv);
4516         if (err)
4517                 IWL_ERROR("Unable to initialize RFKILL system. "
4518                                   "Ignoring error: %d\n", err);
4519         iwl_power_initialize(priv);
4520         return 0;
4521
4522  out_remove_sysfs:
4523         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4524  out_uninit_drv:
4525         iwl_uninit_drv(priv);
4526  out_free_eeprom:
4527         iwl_eeprom_free(priv);
4528  out_iounmap:
4529         pci_iounmap(pdev, priv->hw_base);
4530  out_pci_release_regions:
4531         pci_release_regions(pdev);
4532         pci_set_drvdata(pdev, NULL);
4533  out_pci_disable_device:
4534         pci_disable_device(pdev);
4535  out_ieee80211_free_hw:
4536         ieee80211_free_hw(priv->hw);
4537  out:
4538         return err;
4539 }
4540
4541 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4542 {
4543         struct iwl_priv *priv = pci_get_drvdata(pdev);
4544         struct list_head *p, *q;
4545         int i;
4546         unsigned long flags;
4547
4548         if (!priv)
4549                 return;
4550
4551         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4552
4553         iwl_dbgfs_unregister(priv);
4554         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4555
4556         if (priv->mac80211_registered) {
4557                 ieee80211_unregister_hw(priv->hw);
4558                 priv->mac80211_registered = 0;
4559         }
4560
4561         set_bit(STATUS_EXIT_PENDING, &priv->status);
4562
4563         iwl4965_down(priv);
4564
4565         /* make sure we flush any pending irq or
4566          * tasklet for the driver
4567          */
4568         spin_lock_irqsave(&priv->lock, flags);
4569         iwl4965_disable_interrupts(priv);
4570         spin_unlock_irqrestore(&priv->lock, flags);
4571
4572         iwl_synchronize_irq(priv);
4573
4574         /* Free MAC hash list for ADHOC */
4575         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
4576                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
4577                         list_del(p);
4578                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
4579                 }
4580         }
4581
4582         iwl_rfkill_unregister(priv);
4583         iwl4965_dealloc_ucode_pci(priv);
4584
4585         if (priv->rxq.bd)
4586                 iwl_rx_queue_free(priv, &priv->rxq);
4587         iwl_hw_txq_ctx_free(priv);
4588
4589         iwlcore_clear_stations_table(priv);
4590         iwl_eeprom_free(priv);
4591
4592
4593         /*netif_stop_queue(dev); */
4594         flush_workqueue(priv->workqueue);
4595
4596         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4597          * priv->workqueue... so we can't take down the workqueue
4598          * until now... */
4599         destroy_workqueue(priv->workqueue);
4600         priv->workqueue = NULL;
4601
4602         pci_iounmap(pdev, priv->hw_base);
4603         pci_release_regions(pdev);
4604         pci_disable_device(pdev);
4605         pci_set_drvdata(pdev, NULL);
4606
4607         iwl_uninit_drv(priv);
4608
4609         if (priv->ibss_beacon)
4610                 dev_kfree_skb(priv->ibss_beacon);
4611
4612         ieee80211_free_hw(priv->hw);
4613 }
4614
4615 #ifdef CONFIG_PM
4616
4617 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4618 {
4619         struct iwl_priv *priv = pci_get_drvdata(pdev);
4620
4621         if (priv->is_open) {
4622                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4623                 iwl4965_mac_stop(priv->hw);
4624                 priv->is_open = 1;
4625         }
4626
4627         pci_set_power_state(pdev, PCI_D3hot);
4628
4629         return 0;
4630 }
4631
4632 static int iwl4965_pci_resume(struct pci_dev *pdev)
4633 {
4634         struct iwl_priv *priv = pci_get_drvdata(pdev);
4635
4636         pci_set_power_state(pdev, PCI_D0);
4637
4638         if (priv->is_open)
4639                 iwl4965_mac_start(priv->hw);
4640
4641         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4642         return 0;
4643 }
4644
4645 #endif /* CONFIG_PM */
4646
4647 /*****************************************************************************
4648  *
4649  * driver and module entry point
4650  *
4651  *****************************************************************************/
4652
4653 /* Hardware specific file defines the PCI IDs table for that hardware module */
4654 static struct pci_device_id iwl_hw_card_ids[] = {
4655         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4656         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4657 #ifdef CONFIG_IWL5000
4658         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4659         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4660         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4661 #endif /* CONFIG_IWL5000 */
4662         {0}
4663 };
4664 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4665
4666 static struct pci_driver iwl_driver = {
4667         .name = DRV_NAME,
4668         .id_table = iwl_hw_card_ids,
4669         .probe = iwl4965_pci_probe,
4670         .remove = __devexit_p(iwl4965_pci_remove),
4671 #ifdef CONFIG_PM
4672         .suspend = iwl4965_pci_suspend,
4673         .resume = iwl4965_pci_resume,
4674 #endif
4675 };
4676
4677 static int __init iwl4965_init(void)
4678 {
4679
4680         int ret;
4681         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4682         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4683
4684         ret = iwl4965_rate_control_register();
4685         if (ret) {
4686                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4687                 return ret;
4688         }
4689
4690         ret = pci_register_driver(&iwl_driver);
4691         if (ret) {
4692                 IWL_ERROR("Unable to initialize PCI module\n");
4693                 goto error_register;
4694         }
4695
4696         return ret;
4697
4698 error_register:
4699         iwl4965_rate_control_unregister();
4700         return ret;
4701 }
4702
4703 static void __exit iwl4965_exit(void)
4704 {
4705         pci_unregister_driver(&iwl_driver);
4706         iwl4965_rate_control_unregister();
4707 }
4708
4709 module_exit(iwl4965_exit);
4710 module_init(iwl4965_init);