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         queue_work(priv->workqueue, &priv->restart);
 974         return 1;
 975 }
 976
 977 #define IWL_PACKET_RETRY_TIME HZ
 978
 979 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 980 {
 981         u16 sc = le16_to_cpu(header->seq_ctrl);
 982         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
 983         u16 frag = sc & IEEE80211_SCTL_FRAG;
 984         u16 *last_seq, *last_frag;
 985         unsigned long *last_time;
 986
 987         switch (priv->iw_mode) {
 988         case IEEE80211_IF_TYPE_IBSS:{
 989                 struct list_head *p;
 990                 struct iwl4965_ibss_seq *entry = NULL;
 991                 u8 *mac = header->addr2;
 992                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
 993
 994                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
 995                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
 996                         if (!compare_ether_addr(entry->mac, mac))
 997                                 break;
 998                 }
 999                 if (p == &priv->ibss_mac_hash[index]) {
1000                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1001                         if (!entry) {
1002                                 IWL_ERROR("Cannot malloc new mac entry\n");
1003                                 return 0;
1004                         }
1005                         memcpy(entry->mac, mac, ETH_ALEN);
1006                         entry->seq_num = seq;
1007                         entry->frag_num = frag;
1008                         entry->packet_time = jiffies;
1009                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1010                         return 0;
1011                 }
1012                 last_seq = &entry->seq_num;
1013                 last_frag = &entry->frag_num;
1014                 last_time = &entry->packet_time;
1015                 break;
1016         }
1017         case IEEE80211_IF_TYPE_STA:
1018                 last_seq = &priv->last_seq_num;
1019                 last_frag = &priv->last_frag_num;
1020                 last_time = &priv->last_packet_time;
1021                 break;
1022         default:
1023                 return 0;
1024         }
1025         if ((*last_seq == seq) &&
1026             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1027                 if (*last_frag == frag)
1028                         goto drop;
1029                 if (*last_frag + 1 != frag)
1030                         /* out-of-order fragment */
1031                         goto drop;
1032         } else
1033                 *last_seq = seq;
1034
1035         *last_frag = frag;
1036         *last_time = jiffies;
1037         return 0;
1038
1039  drop:
1040         return 1;
1041 }
1042
1043 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1044
1045 #include "iwl-spectrum.h"
1046
1047 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1048 #define BEACON_TIME_MASK_HIGH   0xFF000000
1049 #define TIME_UNIT               1024
1050
1051 /*
1052  * extended beacon time format
1053  * time in usec will be changed into a 32-bit value in 8:24 format
1054  * the high 1 byte is the beacon counts
1055  * the lower 3 bytes is the time in usec within one beacon interval
1056  */
1057
1058 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1059 {
1060         u32 quot;
1061         u32 rem;
1062         u32 interval = beacon_interval * 1024;
1063
1064         if (!interval || !usec)
1065                 return 0;
1066
1067         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1068         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1069
1070         return (quot << 24) + rem;
1071 }
1072
1073 /* base is usually what we get from ucode with each received frame,
1074  * the same as HW timer counter counting down
1075  */
1076
1077 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1078 {
1079         u32 base_low = base & BEACON_TIME_MASK_LOW;
1080         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1081         u32 interval = beacon_interval * TIME_UNIT;
1082         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1083             (addon & BEACON_TIME_MASK_HIGH);
1084
1085         if (base_low > addon_low)
1086                 res += base_low - addon_low;
1087         else if (base_low < addon_low) {
1088                 res += interval + base_low - addon_low;
1089                 res += (1 << 24);
1090         } else
1091                 res += (1 << 24);
1092
1093         return cpu_to_le32(res);
1094 }
1095
1096 static int iwl4965_get_measurement(struct iwl_priv *priv,
1097                                struct ieee80211_measurement_params *params,
1098                                u8 type)
1099 {
1100         struct iwl4965_spectrum_cmd spectrum;
1101         struct iwl_rx_packet *res;
1102         struct iwl_host_cmd cmd = {
1103                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1104                 .data = (void *)&spectrum,
1105                 .meta.flags = CMD_WANT_SKB,
1106         };
1107         u32 add_time = le64_to_cpu(params->start_time);
1108         int rc;
1109         int spectrum_resp_status;
1110         int duration = le16_to_cpu(params->duration);
1111
1112         if (iwl_is_associated(priv))
1113                 add_time =
1114                     iwl4965_usecs_to_beacons(
1115                         le64_to_cpu(params->start_time) - priv->last_tsf,
1116                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1117
1118         memset(&spectrum, 0, sizeof(spectrum));
1119
1120         spectrum.channel_count = cpu_to_le16(1);
1121         spectrum.flags =
1122             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1123         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1124         cmd.len = sizeof(spectrum);
1125         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1126
1127         if (iwl_is_associated(priv))
1128                 spectrum.start_time =
1129                     iwl4965_add_beacon_time(priv->last_beacon_time,
1130                                 add_time,
1131                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1132         else
1133                 spectrum.start_time = 0;
1134
1135         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1136         spectrum.channels[0].channel = params->channel;
1137         spectrum.channels[0].type = type;
1138         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1139                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1140                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1141
1142         rc = iwl_send_cmd_sync(priv, &cmd);
1143         if (rc)
1144                 return rc;
1145
1146         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1147         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1148                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1149                 rc = -EIO;
1150         }
1151
1152         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1153         switch (spectrum_resp_status) {
1154         case 0:         /* Command will be handled */
1155                 if (res->u.spectrum.id != 0xff) {
1156                         IWL_DEBUG_INFO
1157                             ("Replaced existing measurement: %d\n",
1158                              res->u.spectrum.id);
1159                         priv->measurement_status &= ~MEASUREMENT_READY;
1160                 }
1161                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1162                 rc = 0;
1163                 break;
1164
1165         case 1:         /* Command will not be handled */
1166                 rc = -EAGAIN;
1167                 break;
1168         }
1169
1170         dev_kfree_skb_any(cmd.meta.u.skb);
1171
1172         return rc;
1173 }
1174 #endif
1175
1176 /******************************************************************************
1177  *
1178  * Generic RX handler implementations
1179  *
1180  ******************************************************************************/
1181 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1182                                 struct iwl_rx_mem_buffer *rxb)
1183 {
1184         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1185         struct iwl_alive_resp *palive;
1186         struct delayed_work *pwork;
1187
1188         palive = &pkt->u.alive_frame;
1189
1190         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1191                        "0x%01X 0x%01X\n",
1192                        palive->is_valid, palive->ver_type,
1193                        palive->ver_subtype);
1194
1195         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1196                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1197                 memcpy(&priv->card_alive_init,
1198                        &pkt->u.alive_frame,
1199                        sizeof(struct iwl_init_alive_resp));
1200                 pwork = &priv->init_alive_start;
1201         } else {
1202                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1203                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1204                        sizeof(struct iwl_alive_resp));
1205                 pwork = &priv->alive_start;
1206         }
1207
1208         /* We delay the ALIVE response by 5ms to
1209          * give the HW RF Kill time to activate... */
1210         if (palive->is_valid == UCODE_VALID_OK)
1211                 queue_delayed_work(priv->workqueue, pwork,
1212                                    msecs_to_jiffies(5));
1213         else
1214                 IWL_WARNING("uCode did not respond OK.\n");
1215 }
1216
1217 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1218                                    struct iwl_rx_mem_buffer *rxb)
1219 {
1220         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1221
1222         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1223                 "seq 0x%04X ser 0x%08X\n",
1224                 le32_to_cpu(pkt->u.err_resp.error_type),
1225                 get_cmd_string(pkt->u.err_resp.cmd_id),
1226                 pkt->u.err_resp.cmd_id,
1227                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1228                 le32_to_cpu(pkt->u.err_resp.error_info));
1229 }
1230
1231 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1232
1233 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1234 {
1235         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1236         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1237         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1238         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1239                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1240         rxon->channel = csa->channel;
1241         priv->staging_rxon.channel = csa->channel;
1242 }
1243
1244 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1245                                           struct iwl_rx_mem_buffer *rxb)
1246 {
1247 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1248         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1249         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1250
1251         if (!report->state) {
1252                 IWL_DEBUG(IWL_DL_11H,
1253                         "Spectrum Measure Notification: Start\n");
1254                 return;
1255         }
1256
1257         memcpy(&priv->measure_report, report, sizeof(*report));
1258         priv->measurement_status |= MEASUREMENT_READY;
1259 #endif
1260 }
1261
1262 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1263                                       struct iwl_rx_mem_buffer *rxb)
1264 {
1265 #ifdef CONFIG_IWLWIFI_DEBUG
1266         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1267         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1268         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1269                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1270 #endif
1271 }
1272
1273 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1274                                              struct iwl_rx_mem_buffer *rxb)
1275 {
1276         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1277         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1278                         "notification for %s:\n",
1279                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1280         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1281 }
1282
1283 static void iwl4965_bg_beacon_update(struct work_struct *work)
1284 {
1285         struct iwl_priv *priv =
1286                 container_of(work, struct iwl_priv, beacon_update);
1287         struct sk_buff *beacon;
1288
1289         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1290         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1291
1292         if (!beacon) {
1293                 IWL_ERROR("update beacon failed\n");
1294                 return;
1295         }
1296
1297         mutex_lock(&priv->mutex);
1298         /* new beacon skb is allocated every time; dispose previous.*/
1299         if (priv->ibss_beacon)
1300                 dev_kfree_skb(priv->ibss_beacon);
1301
1302         priv->ibss_beacon = beacon;
1303         mutex_unlock(&priv->mutex);
1304
1305         iwl4965_send_beacon_cmd(priv);
1306 }
1307
1308 /**
1309  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1310  *
1311  * This callback is provided in order to send a statistics request.
1312  *
1313  * This timer function is continually reset to execute within
1314  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1315  * was received.  We need to ensure we receive the statistics in order
1316  * to update the temperature used for calibrating the TXPOWER.
1317  */
1318 static void iwl4965_bg_statistics_periodic(unsigned long data)
1319 {
1320         struct iwl_priv *priv = (struct iwl_priv *)data;
1321
1322         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1323                 return;
1324
1325         iwl_send_statistics_request(priv, CMD_ASYNC);
1326 }
1327
1328 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1329                                 struct iwl_rx_mem_buffer *rxb)
1330 {
1331 #ifdef CONFIG_IWLWIFI_DEBUG
1332         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1333         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1334         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1335
1336         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1337                 "tsf %d %d rate %d\n",
1338                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1339                 beacon->beacon_notify_hdr.failure_frame,
1340                 le32_to_cpu(beacon->ibss_mgr_status),
1341                 le32_to_cpu(beacon->high_tsf),
1342                 le32_to_cpu(beacon->low_tsf), rate);
1343 #endif
1344
1345         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1346             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1347                 queue_work(priv->workqueue, &priv->beacon_update);
1348 }
1349
1350 /* Handle notification from uCode that card's power state is changing
1351  * due to software, hardware, or critical temperature RFKILL */
1352 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1353                                     struct iwl_rx_mem_buffer *rxb)
1354 {
1355         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1356         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1357         unsigned long status = priv->status;
1358
1359         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1360                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1361                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1362
1363         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1364                      RF_CARD_DISABLED)) {
1365
1366                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1367                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1368
1369                 if (!iwl_grab_nic_access(priv)) {
1370                         iwl_write_direct32(
1371                                 priv, HBUS_TARG_MBX_C,
1372                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1373
1374                         iwl_release_nic_access(priv);
1375                 }
1376
1377                 if (!(flags & RXON_CARD_DISABLED)) {
1378                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1379                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1380                         if (!iwl_grab_nic_access(priv)) {
1381                                 iwl_write_direct32(
1382                                         priv, HBUS_TARG_MBX_C,
1383                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1384
1385                                 iwl_release_nic_access(priv);
1386                         }
1387                 }
1388
1389                 if (flags & RF_CARD_DISABLED) {
1390                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1391                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1392                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1393                         if (!iwl_grab_nic_access(priv))
1394                                 iwl_release_nic_access(priv);
1395                 }
1396         }
1397
1398         if (flags & HW_CARD_DISABLED)
1399                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1400         else
1401                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1402
1403
1404         if (flags & SW_CARD_DISABLED)
1405                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1406         else
1407                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1408
1409         if (!(flags & RXON_CARD_DISABLED))
1410                 iwl_scan_cancel(priv);
1411
1412         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1413              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1414             (test_bit(STATUS_RF_KILL_SW, &status) !=
1415              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1416                 queue_work(priv->workqueue, &priv->rf_kill);
1417         else
1418                 wake_up_interruptible(&priv->wait_command_queue);
1419 }
1420
1421 /* Cache phy data (Rx signal strength, etc) for HT frame (REPLY_RX_PHY_CMD).
1422  * This will be used later in iwl4965_rx_reply_rx() for REPLY_RX_MPDU_CMD. */
1423 static void iwl4965_rx_reply_rx_phy(struct iwl_priv *priv,
1424                                     struct iwl_rx_mem_buffer *rxb)
1425 {
1426         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1427         priv->last_phy_res[0] = 1;
1428         memcpy(&priv->last_phy_res[1], &(pkt->u.raw[0]),
1429                sizeof(struct iwl4965_rx_phy_res));
1430 }
1431
1432 /**
1433  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1434  *
1435  * Setup the RX handlers for each of the reply types sent from the uCode
1436  * to the host.
1437  *
1438  * This function chains into the hardware specific files for them to setup
1439  * any hardware specific handlers as well.
1440  */
1441 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1442 {
1443         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1444         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1445         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1446         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1447             iwl4965_rx_spectrum_measure_notif;
1448         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1449         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1450             iwl4965_rx_pm_debug_statistics_notif;
1451         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1452
1453         /*
1454          * The same handler is used for both the REPLY to a discrete
1455          * statistics request from the host as well as for the periodic
1456          * statistics notifications (after received beacons) from the uCode.
1457          */
1458         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
1459         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
1460
1461         iwl_setup_rx_scan_handlers(priv);
1462
1463         /* status change handler */
1464         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1465
1466         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1467             iwl_rx_missed_beacon_notif;
1468         /* Rx handlers */
1469         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl4965_rx_reply_rx_phy;
1470         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl4965_rx_reply_rx;
1471         /* Set up hardware specific Rx handlers */
1472         priv->cfg->ops->lib->rx_handler_setup(priv);
1473 }
1474
1475 /*
1476  * this should be called while priv->lock is locked
1477 */
1478 static void __iwl_rx_replenish(struct iwl_priv *priv)
1479 {
1480         iwl_rx_allocate(priv);
1481         iwl_rx_queue_restock(priv);
1482 }
1483
1484
1485 /**
1486  * iwl_rx_handle - Main entry function for receiving responses from uCode
1487  *
1488  * Uses the priv->rx_handlers callback function array to invoke
1489  * the appropriate handlers, including command responses,
1490  * frame-received notifications, and other notifications.
1491  */
1492 void iwl_rx_handle(struct iwl_priv *priv)
1493 {
1494         struct iwl_rx_mem_buffer *rxb;
1495         struct iwl_rx_packet *pkt;
1496         struct iwl_rx_queue *rxq = &priv->rxq;
1497         u32 r, i;
1498         int reclaim;
1499         unsigned long flags;
1500         u8 fill_rx = 0;
1501         u32 count = 8;
1502
1503         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1504          * buffer that the driver may process (last buffer filled by ucode). */
1505         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1506         i = rxq->read;
1507
1508         /* Rx interrupt, but nothing sent from uCode */
1509         if (i == r)
1510                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1511
1512         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1513                 fill_rx = 1;
1514
1515         while (i != r) {
1516                 rxb = rxq->queue[i];
1517
1518                 /* If an RXB doesn't have a Rx queue slot associated with it,
1519                  * then a bug has been introduced in the queue refilling
1520                  * routines -- catch it here */
1521                 BUG_ON(rxb == NULL);
1522
1523                 rxq->queue[i] = NULL;
1524
1525                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1526                                             priv->hw_params.rx_buf_size,
1527                                             PCI_DMA_FROMDEVICE);
1528                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1529
1530                 /* Reclaim a command buffer only if this packet is a response
1531                  *   to a (driver-originated) command.
1532                  * If the packet (e.g. Rx frame) originated from uCode,
1533                  *   there is no command buffer to reclaim.
1534                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1535                  *   but apparently a few don't get set; catch them here. */
1536                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1537                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1538                         (pkt->hdr.cmd != REPLY_RX) &&
1539                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1540                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1541                         (pkt->hdr.cmd != REPLY_TX);
1542
1543                 /* Based on type of command response or notification,
1544                  *   handle those that need handling via function in
1545                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1546                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1547                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1548                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1549                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1550                 } else {
1551                         /* No handling needed */
1552                         IWL_DEBUG(IWL_DL_RX,
1553                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1554                                 r, i, get_cmd_string(pkt->hdr.cmd),
1555                                 pkt->hdr.cmd);
1556                 }
1557
1558                 if (reclaim) {
1559                         /* Invoke any callbacks, transfer the skb to caller, and
1560                          * fire off the (possibly) blocking iwl_send_cmd()
1561                          * as we reclaim the driver command queue */
1562                         if (rxb && rxb->skb)
1563                                 iwl_tx_cmd_complete(priv, rxb);
1564                         else
1565                                 IWL_WARNING("Claim null rxb?\n");
1566                 }
1567
1568                 /* For now we just don't re-use anything.  We can tweak this
1569                  * later to try and re-use notification packets and SKBs that
1570                  * fail to Rx correctly */
1571                 if (rxb->skb != NULL) {
1572                         priv->alloc_rxb_skb--;
1573                         dev_kfree_skb_any(rxb->skb);
1574                         rxb->skb = NULL;
1575                 }
1576
1577                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1578                                  priv->hw_params.rx_buf_size,
1579                                  PCI_DMA_FROMDEVICE);
1580                 spin_lock_irqsave(&rxq->lock, flags);
1581                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1582                 spin_unlock_irqrestore(&rxq->lock, flags);
1583                 i = (i + 1) & RX_QUEUE_MASK;
1584                 /* If there are a lot of unused frames,
1585                  * restock the Rx queue so ucode wont assert. */
1586                 if (fill_rx) {
1587                         count++;
1588                         if (count >= 8) {
1589                                 priv->rxq.read = i;
1590                                 __iwl_rx_replenish(priv);
1591                                 count = 0;
1592                         }
1593                 }
1594         }
1595
1596         /* Backtrack one entry */
1597         priv->rxq.read = i;
1598         iwl_rx_queue_restock(priv);
1599 }
1600 /* Convert linear signal-to-noise ratio into dB */
1601 static u8 ratio2dB[100] = {
1602 /*       0   1   2   3   4   5   6   7   8   9 */
1603          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
1604         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
1605         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
1606         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
1607         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
1608         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
1609         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
1610         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
1611         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
1612         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
1613 };
1614
1615 /* Calculates a relative dB value from a ratio of linear
1616  *   (i.e. not dB) signal levels.
1617  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
1618 int iwl4965_calc_db_from_ratio(int sig_ratio)
1619 {
1620         /* 1000:1 or higher just report as 60 dB */
1621         if (sig_ratio >= 1000)
1622                 return 60;
1623
1624         /* 100:1 or higher, divide by 10 and use table,
1625          *   add 20 dB to make up for divide by 10 */
1626         if (sig_ratio >= 100)
1627                 return (20 + (int)ratio2dB[sig_ratio/10]);
1628
1629         /* We shouldn't see this */
1630         if (sig_ratio < 1)
1631                 return 0;
1632
1633         /* Use table for ratios 1:1 - 99:1 */
1634         return (int)ratio2dB[sig_ratio];
1635 }
1636
1637 #define PERFECT_RSSI (-20) /* dBm */
1638 #define WORST_RSSI (-95)   /* dBm */
1639 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
1640
1641 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
1642  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
1643  *   about formulas used below. */
1644 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
1645 {
1646         int sig_qual;
1647         int degradation = PERFECT_RSSI - rssi_dbm;
1648
1649         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
1650          * as indicator; formula is (signal dbm - noise dbm).
1651          * SNR at or above 40 is a great signal (100%).
1652          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
1653          * Weakest usable signal is usually 10 - 15 dB SNR. */
1654         if (noise_dbm) {
1655                 if (rssi_dbm - noise_dbm >= 40)
1656                         return 100;
1657                 else if (rssi_dbm < noise_dbm)
1658                         return 0;
1659                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
1660
1661         /* Else use just the signal level.
1662          * This formula is a least squares fit of data points collected and
1663          *   compared with a reference system that had a percentage (%) display
1664          *   for signal quality. */
1665         } else
1666                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
1667                             (15 * RSSI_RANGE + 62 * degradation)) /
1668                            (RSSI_RANGE * RSSI_RANGE);
1669
1670         if (sig_qual > 100)
1671                 sig_qual = 100;
1672         else if (sig_qual < 1)
1673                 sig_qual = 0;
1674
1675         return sig_qual;
1676 }
1677
1678 #ifdef CONFIG_IWLWIFI_DEBUG
1679 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1680 {
1681         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1682         DECLARE_MAC_BUF(mac);
1683
1684         IWL_DEBUG_RADIO("RX CONFIG:\n");
1685         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1686         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1687         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1688         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1689                         le32_to_cpu(rxon->filter_flags));
1690         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1691         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1692                         rxon->ofdm_basic_rates);
1693         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1694         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1695                         print_mac(mac, rxon->node_addr));
1696         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1697                         print_mac(mac, rxon->bssid_addr));
1698         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1699 }
1700 #endif
1701
1702 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1703 {
1704         IWL_DEBUG_ISR("Enabling interrupts\n");
1705         set_bit(STATUS_INT_ENABLED, &priv->status);
1706         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1707 }
1708
1709 /* call this function to flush any scheduled tasklet */
1710 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1711 {
1712         /* wait to make sure we flush pedding tasklet*/
1713         synchronize_irq(priv->pci_dev->irq);
1714         tasklet_kill(&priv->irq_tasklet);
1715 }
1716
1717 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1718 {
1719         clear_bit(STATUS_INT_ENABLED, &priv->status);
1720
1721         /* disable interrupts from uCode/NIC to host */
1722         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1723
1724         /* acknowledge/clear/reset any interrupts still pending
1725          * from uCode or flow handler (Rx/Tx DMA) */
1726         iwl_write32(priv, CSR_INT, 0xffffffff);
1727         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1728         IWL_DEBUG_ISR("Disabled interrupts\n");
1729 }
1730
1731
1732 /**
1733  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1734  */
1735 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1736 {
1737         /* Set the FW error flag -- cleared on iwl4965_down */
1738         set_bit(STATUS_FW_ERROR, &priv->status);
1739
1740         /* Cancel currently queued command. */
1741         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1742
1743 #ifdef CONFIG_IWLWIFI_DEBUG
1744         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1745                 iwl_dump_nic_error_log(priv);
1746                 iwl_dump_nic_event_log(priv);
1747                 iwl4965_print_rx_config_cmd(priv);
1748         }
1749 #endif
1750
1751         wake_up_interruptible(&priv->wait_command_queue);
1752
1753         /* Keep the restart process from trying to send host
1754          * commands by clearing the INIT status bit */
1755         clear_bit(STATUS_READY, &priv->status);
1756
1757         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1758                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1759                           "Restarting adapter due to uCode error.\n");
1760
1761                 if (iwl_is_associated(priv)) {
1762                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1763                                sizeof(priv->recovery_rxon));
1764                         priv->error_recovering = 1;
1765                 }
1766                 if (priv->cfg->mod_params->restart_fw)
1767                         queue_work(priv->workqueue, &priv->restart);
1768         }
1769 }
1770
1771 static void iwl4965_error_recovery(struct iwl_priv *priv)
1772 {
1773         unsigned long flags;
1774
1775         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1776                sizeof(priv->staging_rxon));
1777         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1778         iwl4965_commit_rxon(priv);
1779
1780         iwl_rxon_add_station(priv, priv->bssid, 1);
1781
1782         spin_lock_irqsave(&priv->lock, flags);
1783         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1784         priv->error_recovering = 0;
1785         spin_unlock_irqrestore(&priv->lock, flags);
1786 }
1787
1788 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1789 {
1790         u32 inta, handled = 0;
1791         u32 inta_fh;
1792         unsigned long flags;
1793 #ifdef CONFIG_IWLWIFI_DEBUG
1794         u32 inta_mask;
1795 #endif
1796
1797         spin_lock_irqsave(&priv->lock, flags);
1798
1799         /* Ack/clear/reset pending uCode interrupts.
1800          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1801          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1802         inta = iwl_read32(priv, CSR_INT);
1803         iwl_write32(priv, CSR_INT, inta);
1804
1805         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1806          * Any new interrupts that happen after this, either while we're
1807          * in this tasklet, or later, will show up in next ISR/tasklet. */
1808         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1809         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1810
1811 #ifdef CONFIG_IWLWIFI_DEBUG
1812         if (priv->debug_level & IWL_DL_ISR) {
1813                 /* just for debug */
1814                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1815                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1816                               inta, inta_mask, inta_fh);
1817         }
1818 #endif
1819
1820         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1821          * atomic, make sure that inta covers all the interrupts that
1822          * we've discovered, even if FH interrupt came in just after
1823          * reading CSR_INT. */
1824         if (inta_fh & CSR49_FH_INT_RX_MASK)
1825                 inta |= CSR_INT_BIT_FH_RX;
1826         if (inta_fh & CSR49_FH_INT_TX_MASK)
1827                 inta |= CSR_INT_BIT_FH_TX;
1828
1829         /* Now service all interrupt bits discovered above. */
1830         if (inta & CSR_INT_BIT_HW_ERR) {
1831                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1832
1833                 /* Tell the device to stop sending interrupts */
1834                 iwl4965_disable_interrupts(priv);
1835
1836                 iwl4965_irq_handle_error(priv);
1837
1838                 handled |= CSR_INT_BIT_HW_ERR;
1839
1840                 spin_unlock_irqrestore(&priv->lock, flags);
1841
1842                 return;
1843         }
1844
1845 #ifdef CONFIG_IWLWIFI_DEBUG
1846         if (priv->debug_level & (IWL_DL_ISR)) {
1847                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1848                 if (inta & CSR_INT_BIT_SCD)
1849                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1850                                       "the frame/frames.\n");
1851
1852                 /* Alive notification via Rx interrupt will do the real work */
1853                 if (inta & CSR_INT_BIT_ALIVE)
1854                         IWL_DEBUG_ISR("Alive interrupt\n");
1855         }
1856 #endif
1857         /* Safely ignore these bits for debug checks below */
1858         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1859
1860         /* HW RF KILL switch toggled */
1861         if (inta & CSR_INT_BIT_RF_KILL) {
1862                 int hw_rf_kill = 0;
1863                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1864                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1865                         hw_rf_kill = 1;
1866
1867                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1868                                 hw_rf_kill ? "disable radio":"enable radio");
1869
1870                 /* Queue restart only if RF_KILL switch was set to "kill"
1871                  *   when we loaded driver, and is now set to "enable".
1872                  * After we're Alive, RF_KILL gets handled by
1873                  *   iwl4965_rx_card_state_notif() */
1874                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1875                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1876                         queue_work(priv->workqueue, &priv->restart);
1877                 }
1878
1879                 handled |= CSR_INT_BIT_RF_KILL;
1880         }
1881
1882         /* Chip got too hot and stopped itself */
1883         if (inta & CSR_INT_BIT_CT_KILL) {
1884                 IWL_ERROR("Microcode CT kill error detected.\n");
1885                 handled |= CSR_INT_BIT_CT_KILL;
1886         }
1887
1888         /* Error detected by uCode */
1889         if (inta & CSR_INT_BIT_SW_ERR) {
1890                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1891                           inta);
1892                 iwl4965_irq_handle_error(priv);
1893                 handled |= CSR_INT_BIT_SW_ERR;
1894         }
1895
1896         /* uCode wakes up after power-down sleep */
1897         if (inta & CSR_INT_BIT_WAKEUP) {
1898                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1899                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1900                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1901                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1902                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1903                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1904                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1905                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1906
1907                 handled |= CSR_INT_BIT_WAKEUP;
1908         }
1909
1910         /* All uCode command responses, including Tx command responses,
1911          * Rx "responses" (frame-received notification), and other
1912          * notifications from uCode come through here*/
1913         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1914                 iwl_rx_handle(priv);
1915                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1916         }
1917
1918         if (inta & CSR_INT_BIT_FH_TX) {
1919                 IWL_DEBUG_ISR("Tx interrupt\n");
1920                 handled |= CSR_INT_BIT_FH_TX;
1921                 /* FH finished to write, send event */
1922                 priv->ucode_write_complete = 1;
1923                 wake_up_interruptible(&priv->wait_command_queue);
1924         }
1925
1926         if (inta & ~handled)
1927                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1928
1929         if (inta & ~CSR_INI_SET_MASK) {
1930                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1931                          inta & ~CSR_INI_SET_MASK);
1932                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1933         }
1934
1935         /* Re-enable all interrupts */
1936         /* only Re-enable if diabled by irq */
1937         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1938                 iwl4965_enable_interrupts(priv);
1939
1940 #ifdef CONFIG_IWLWIFI_DEBUG
1941         if (priv->debug_level & (IWL_DL_ISR)) {
1942                 inta = iwl_read32(priv, CSR_INT);
1943                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1944                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1945                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1946                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1947         }
1948 #endif
1949         spin_unlock_irqrestore(&priv->lock, flags);
1950 }
1951
1952 static irqreturn_t iwl4965_isr(int irq, void *data)
1953 {
1954         struct iwl_priv *priv = data;
1955         u32 inta, inta_mask;
1956         u32 inta_fh;
1957         if (!priv)
1958                 return IRQ_NONE;
1959
1960         spin_lock(&priv->lock);
1961
1962         /* Disable (but don't clear!) interrupts here to avoid
1963          *    back-to-back ISRs and sporadic interrupts from our NIC.
1964          * If we have something to service, the tasklet will re-enable ints.
1965          * If we *don't* have something, we'll re-enable before leaving here. */
1966         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1967         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1968
1969         /* Discover which interrupts are active/pending */
1970         inta = iwl_read32(priv, CSR_INT);
1971         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1972
1973         /* Ignore interrupt if there's nothing in NIC to service.
1974          * This may be due to IRQ shared with another device,
1975          * or due to sporadic interrupts thrown from our NIC. */
1976         if (!inta && !inta_fh) {
1977                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1978                 goto none;
1979         }
1980
1981         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1982                 /* Hardware disappeared. It might have already raised
1983                  * an interrupt */
1984                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1985                 goto unplugged;
1986         }
1987
1988         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1989                       inta, inta_mask, inta_fh);
1990
1991         inta &= ~CSR_INT_BIT_SCD;
1992
1993         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1994         if (likely(inta || inta_fh))
1995                 tasklet_schedule(&priv->irq_tasklet);
1996
1997  unplugged:
1998         spin_unlock(&priv->lock);
1999         return IRQ_HANDLED;
2000
2001  none:
2002         /* re-enable interrupts here since we don't have anything to service. */
2003         /* only Re-enable if diabled by irq */
2004         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2005                 iwl4965_enable_interrupts(priv);
2006         spin_unlock(&priv->lock);
2007         return IRQ_NONE;
2008 }
2009
2010 /******************************************************************************
2011  *
2012  * uCode download functions
2013  *
2014  ******************************************************************************/
2015
2016 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
2017 {
2018         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
2019         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
2020         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2021         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
2022         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2023         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
2024 }
2025
2026 static void iwl4965_nic_start(struct iwl_priv *priv)
2027 {
2028         /* Remove all resets to allow NIC to operate */
2029         iwl_write32(priv, CSR_RESET, 0);
2030 }
2031
2032
2033 /**
2034  * iwl4965_read_ucode - Read uCode images from disk file.
2035  *
2036  * Copy into buffers for card to fetch via bus-mastering
2037  */
2038 static int iwl4965_read_ucode(struct iwl_priv *priv)
2039 {
2040         struct iwl4965_ucode *ucode;
2041         int ret;
2042         const struct firmware *ucode_raw;
2043         const char *name = priv->cfg->fw_name;
2044         u8 *src;
2045         size_t len;
2046         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
2047
2048         /* Ask kernel firmware_class module to get the boot firmware off disk.
2049          * request_firmware() is synchronous, file is in memory on return. */
2050         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
2051         if (ret < 0) {
2052                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
2053                                         name, ret);
2054                 goto error;
2055         }
2056
2057         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
2058                        name, ucode_raw->size);
2059
2060         /* Make sure that we got at least our header! */
2061         if (ucode_raw->size < sizeof(*ucode)) {
2062                 IWL_ERROR("File size way too small!\n");
2063                 ret = -EINVAL;
2064                 goto err_release;
2065         }
2066
2067         /* Data from ucode file:  header followed by uCode images */
2068         ucode = (void *)ucode_raw->data;
2069
2070         ver = le32_to_cpu(ucode->ver);
2071         inst_size = le32_to_cpu(ucode->inst_size);
2072         data_size = le32_to_cpu(ucode->data_size);
2073         init_size = le32_to_cpu(ucode->init_size);
2074         init_data_size = le32_to_cpu(ucode->init_data_size);
2075         boot_size = le32_to_cpu(ucode->boot_size);
2076
2077         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
2078         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
2079                        inst_size);
2080         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
2081                        data_size);
2082         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
2083                        init_size);
2084         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
2085                        init_data_size);
2086         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
2087                        boot_size);
2088
2089         /* Verify size of file vs. image size info in file's header */
2090         if (ucode_raw->size < sizeof(*ucode) +
2091                 inst_size + data_size + init_size +
2092                 init_data_size + boot_size) {
2093
2094                 IWL_DEBUG_INFO("uCode file size %d too small\n",
2095                                (int)ucode_raw->size);
2096                 ret = -EINVAL;
2097                 goto err_release;
2098         }
2099
2100         /* Verify that uCode images will fit in card's SRAM */
2101         if (inst_size > priv->hw_params.max_inst_size) {
2102                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
2103                                inst_size);
2104                 ret = -EINVAL;
2105                 goto err_release;
2106         }
2107
2108         if (data_size > priv->hw_params.max_data_size) {
2109                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
2110                                 data_size);
2111                 ret = -EINVAL;
2112                 goto err_release;
2113         }
2114         if (init_size > priv->hw_params.max_inst_size) {
2115                 IWL_DEBUG_INFO
2116                     ("uCode init instr len %d too large to fit in\n",
2117                       init_size);
2118                 ret = -EINVAL;
2119                 goto err_release;
2120         }
2121         if (init_data_size > priv->hw_params.max_data_size) {
2122                 IWL_DEBUG_INFO
2123                     ("uCode init data len %d too large to fit in\n",
2124                       init_data_size);
2125                 ret = -EINVAL;
2126                 goto err_release;
2127         }
2128         if (boot_size > priv->hw_params.max_bsm_size) {
2129                 IWL_DEBUG_INFO
2130                     ("uCode boot instr len %d too large to fit in\n",
2131                       boot_size);
2132                 ret = -EINVAL;
2133                 goto err_release;
2134         }
2135
2136         /* Allocate ucode buffers for card's bus-master loading ... */
2137
2138         /* Runtime instructions and 2 copies of data:
2139          * 1) unmodified from disk
2140          * 2) backup cache for save/restore during power-downs */
2141         priv->ucode_code.len = inst_size;
2142         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
2143
2144         priv->ucode_data.len = data_size;
2145         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
2146
2147         priv->ucode_data_backup.len = data_size;
2148         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
2149
2150         /* Initialization instructions and data */
2151         if (init_size && init_data_size) {
2152                 priv->ucode_init.len = init_size;
2153                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
2154
2155                 priv->ucode_init_data.len = init_data_size;
2156                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
2157
2158                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
2159                         goto err_pci_alloc;
2160         }
2161
2162         /* Bootstrap (instructions only, no data) */
2163         if (boot_size) {
2164                 priv->ucode_boot.len = boot_size;
2165                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
2166
2167                 if (!priv->ucode_boot.v_addr)
2168                         goto err_pci_alloc;
2169         }
2170
2171         /* Copy images into buffers for card's bus-master reads ... */
2172
2173         /* Runtime instructions (first block of data in file) */
2174         src = &ucode->data[0];
2175         len = priv->ucode_code.len;
2176         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
2177         memcpy(priv->ucode_code.v_addr, src, len);
2178         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
2179                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
2180
2181         /* Runtime data (2nd block)
2182          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
2183         src = &ucode->data[inst_size];
2184         len = priv->ucode_data.len;
2185         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
2186         memcpy(priv->ucode_data.v_addr, src, len);
2187         memcpy(priv->ucode_data_backup.v_addr, src, len);
2188
2189         /* Initialization instructions (3rd block) */
2190         if (init_size) {
2191                 src = &ucode->data[inst_size + data_size];
2192                 len = priv->ucode_init.len;
2193                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
2194                                 len);
2195                 memcpy(priv->ucode_init.v_addr, src, len);
2196         }
2197
2198         /* Initialization data (4th block) */
2199         if (init_data_size) {
2200                 src = &ucode->data[inst_size + data_size + init_size];
2201                 len = priv->ucode_init_data.len;
2202                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
2203                                len);
2204                 memcpy(priv->ucode_init_data.v_addr, src, len);
2205         }
2206
2207         /* Bootstrap instructions (5th block) */
2208         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
2209         len = priv->ucode_boot.len;
2210         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
2211         memcpy(priv->ucode_boot.v_addr, src, len);
2212
2213         /* We have our copies now, allow OS release its copies */
2214         release_firmware(ucode_raw);
2215         return 0;
2216
2217  err_pci_alloc:
2218         IWL_ERROR("failed to allocate pci memory\n");
2219         ret = -ENOMEM;
2220         iwl4965_dealloc_ucode_pci(priv);
2221
2222  err_release:
2223         release_firmware(ucode_raw);
2224
2225  error:
2226         return ret;
2227 }
2228
2229 /**
2230  * iwl_alive_start - called after REPLY_ALIVE notification received
2231  *                   from protocol/runtime uCode (initialization uCode's
2232  *                   Alive gets handled by iwl_init_alive_start()).
2233  */
2234 static void iwl_alive_start(struct iwl_priv *priv)
2235 {
2236         int ret = 0;
2237
2238         IWL_DEBUG_INFO("Runtime Alive received.\n");
2239
2240         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2241                 /* We had an error bringing up the hardware, so take it
2242                  * all the way back down so we can try again */
2243                 IWL_DEBUG_INFO("Alive failed.\n");
2244                 goto restart;
2245         }
2246
2247         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2248          * This is a paranoid check, because we would not have gotten the
2249          * "runtime" alive if code weren't properly loaded.  */
2250         if (iwl_verify_ucode(priv)) {
2251                 /* Runtime instruction load was bad;
2252                  * take it all the way back down so we can try again */
2253                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2254                 goto restart;
2255         }
2256
2257         iwlcore_clear_stations_table(priv);
2258         ret = priv->cfg->ops->lib->alive_notify(priv);
2259         if (ret) {
2260                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2261                             ret);
2262                 goto restart;
2263         }
2264
2265         /* After the ALIVE response, we can send host commands to 4965 uCode */
2266         set_bit(STATUS_ALIVE, &priv->status);
2267
2268         if (iwl_is_rfkill(priv))
2269                 return;
2270
2271         ieee80211_wake_queues(priv->hw);
2272
2273         priv->active_rate = priv->rates_mask;
2274         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2275
2276         if (iwl_is_associated(priv)) {
2277                 struct iwl_rxon_cmd *active_rxon =
2278                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2279
2280                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2281                        sizeof(priv->staging_rxon));
2282                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2283         } else {
2284                 /* Initialize our rx_config data */
2285                 iwl4965_connection_init_rx_config(priv);
2286                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2287         }
2288
2289         /* Configure Bluetooth device coexistence support */
2290         iwl4965_send_bt_config(priv);
2291
2292         iwl_reset_run_time_calib(priv);
2293
2294         /* Configure the adapter for unassociated operation */
2295         iwl4965_commit_rxon(priv);
2296
2297         /* At this point, the NIC is initialized and operational */
2298         iwl_rf_kill_ct_config(priv);
2299
2300         iwl_leds_register(priv);
2301
2302         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2303         set_bit(STATUS_READY, &priv->status);
2304         wake_up_interruptible(&priv->wait_command_queue);
2305
2306         if (priv->error_recovering)
2307                 iwl4965_error_recovery(priv);
2308
2309         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
2310         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2311
2312         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2313                 iwl4965_set_mode(priv, priv->iw_mode);
2314
2315         return;
2316
2317  restart:
2318         queue_work(priv->workqueue, &priv->restart);
2319 }
2320
2321 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2322
2323 static void __iwl4965_down(struct iwl_priv *priv)
2324 {
2325         unsigned long flags;
2326         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2327
2328         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2329
2330         if (!exit_pending)
2331                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2332
2333         iwl_leds_unregister(priv);
2334
2335         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
2336
2337         iwlcore_clear_stations_table(priv);
2338
2339         /* Unblock any waiting calls */
2340         wake_up_interruptible_all(&priv->wait_command_queue);
2341
2342         /* Wipe out the EXIT_PENDING status bit if we are not actually
2343          * exiting the module */
2344         if (!exit_pending)
2345                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2346
2347         /* stop and reset the on-board processor */
2348         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2349
2350         /* tell the device to stop sending interrupts */
2351         spin_lock_irqsave(&priv->lock, flags);
2352         iwl4965_disable_interrupts(priv);
2353         spin_unlock_irqrestore(&priv->lock, flags);
2354         iwl_synchronize_irq(priv);
2355
2356         if (priv->mac80211_registered)
2357                 ieee80211_stop_queues(priv->hw);
2358
2359         /* If we have not previously called iwl4965_init() then
2360          * clear all bits but the RF Kill and SUSPEND bits and return */
2361         if (!iwl_is_init(priv)) {
2362                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2363                                         STATUS_RF_KILL_HW |
2364                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2365                                         STATUS_RF_KILL_SW |
2366                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2367                                         STATUS_GEO_CONFIGURED |
2368                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2369                                         STATUS_IN_SUSPEND;
2370                 goto exit;
2371         }
2372
2373         /* ...otherwise clear out all the status bits but the RF Kill and
2374          * SUSPEND bits and continue taking the NIC down. */
2375         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2376                                 STATUS_RF_KILL_HW |
2377                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2378                                 STATUS_RF_KILL_SW |
2379                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2380                                 STATUS_GEO_CONFIGURED |
2381                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2382                                 STATUS_IN_SUSPEND |
2383                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2384                                 STATUS_FW_ERROR;
2385
2386         spin_lock_irqsave(&priv->lock, flags);
2387         iwl_clear_bit(priv, CSR_GP_CNTRL,
2388                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2389         spin_unlock_irqrestore(&priv->lock, flags);
2390
2391         iwl_txq_ctx_stop(priv);
2392         iwl_rxq_stop(priv);
2393
2394         spin_lock_irqsave(&priv->lock, flags);
2395         if (!iwl_grab_nic_access(priv)) {
2396                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2397                                          APMG_CLK_VAL_DMA_CLK_RQT);
2398                 iwl_release_nic_access(priv);
2399         }
2400         spin_unlock_irqrestore(&priv->lock, flags);
2401
2402         udelay(5);
2403
2404         /* FIXME: apm_ops.suspend(priv) */
2405         priv->cfg->ops->lib->apm_ops.reset(priv);
2406         priv->cfg->ops->lib->free_shared_mem(priv);
2407
2408  exit:
2409         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2410
2411         if (priv->ibss_beacon)
2412                 dev_kfree_skb(priv->ibss_beacon);
2413         priv->ibss_beacon = NULL;
2414
2415         /* clear out any free frames */
2416         iwl_clear_free_frames(priv);
2417 }
2418
2419 static void iwl4965_down(struct iwl_priv *priv)
2420 {
2421         mutex_lock(&priv->mutex);
2422         __iwl4965_down(priv);
2423         mutex_unlock(&priv->mutex);
2424
2425         iwl_cancel_deferred_work(priv);
2426 }
2427
2428 #define MAX_HW_RESTARTS 5
2429
2430 static int __iwl4965_up(struct iwl_priv *priv)
2431 {
2432         int i;
2433         int ret;
2434
2435         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2436                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2437                 return -EIO;
2438         }
2439
2440         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2441                 IWL_ERROR("ucode not available for device bringup\n");
2442                 return -EIO;
2443         }
2444
2445         /* If platform's RF_KILL switch is NOT set to KILL */
2446         if (iwl_read32(priv, CSR_GP_CNTRL) &
2447                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2448                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2449         else {
2450                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2451                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2452                         iwl_rfkill_set_hw_state(priv);
2453                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2454                         return -ENODEV;
2455                 }
2456         }
2457
2458         iwl_rfkill_set_hw_state(priv);
2459         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2460
2461         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2462         if (ret) {
2463                 IWL_ERROR("Unable to allocate shared memory\n");
2464                 return ret;
2465         }
2466
2467         ret = iwl_hw_nic_init(priv);
2468         if (ret) {
2469                 IWL_ERROR("Unable to init nic\n");
2470                 return ret;
2471         }
2472
2473         /* make sure rfkill handshake bits are cleared */
2474         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2475         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2476                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2477
2478         /* clear (again), then enable host interrupts */
2479         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2480         iwl4965_enable_interrupts(priv);
2481
2482         /* really make sure rfkill handshake bits are cleared */
2483         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2484         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2485
2486         /* Copy original ucode data image from disk into backup cache.
2487          * This will be used to initialize the on-board processor's
2488          * data SRAM for a clean start when the runtime program first loads. */
2489         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2490                priv->ucode_data.len);
2491
2492         /* We return success when we resume from suspend and rf_kill is on. */
2493         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2494             test_bit(STATUS_RF_KILL_SW, &priv->status))
2495                 return 0;
2496
2497         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2498
2499                 iwlcore_clear_stations_table(priv);
2500
2501                 /* load bootstrap state machine,
2502                  * load bootstrap program into processor's memory,
2503                  * prepare to load the "initialize" uCode */
2504                 ret = priv->cfg->ops->lib->load_ucode(priv);
2505
2506                 if (ret) {
2507                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2508                         continue;
2509                 }
2510
2511                 /* Clear out the uCode error bit if it is set */
2512                 clear_bit(STATUS_FW_ERROR, &priv->status);
2513
2514                 /* start card; "initialize" will load runtime ucode */
2515                 iwl4965_nic_start(priv);
2516
2517                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2518
2519                 return 0;
2520         }
2521
2522         set_bit(STATUS_EXIT_PENDING, &priv->status);
2523         __iwl4965_down(priv);
2524         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2525
2526         /* tried to restart and config the device for as long as our
2527          * patience could withstand */
2528         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2529         return -EIO;
2530 }
2531
2532
2533 /*****************************************************************************
2534  *
2535  * Workqueue callbacks
2536  *
2537  *****************************************************************************/
2538
2539 static void iwl_bg_init_alive_start(struct work_struct *data)
2540 {
2541         struct iwl_priv *priv =
2542             container_of(data, struct iwl_priv, init_alive_start.work);
2543
2544         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2545                 return;
2546
2547         mutex_lock(&priv->mutex);
2548         priv->cfg->ops->lib->init_alive_start(priv);
2549         mutex_unlock(&priv->mutex);
2550 }
2551
2552 static void iwl_bg_alive_start(struct work_struct *data)
2553 {
2554         struct iwl_priv *priv =
2555             container_of(data, struct iwl_priv, alive_start.work);
2556
2557         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2558                 return;
2559
2560         mutex_lock(&priv->mutex);
2561         iwl_alive_start(priv);
2562         mutex_unlock(&priv->mutex);
2563 }
2564
2565 static void iwl4965_bg_rf_kill(struct work_struct *work)
2566 {
2567         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2568
2569         wake_up_interruptible(&priv->wait_command_queue);
2570
2571         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2572                 return;
2573
2574         mutex_lock(&priv->mutex);
2575
2576         if (!iwl_is_rfkill(priv)) {
2577                 IWL_DEBUG(IWL_DL_RF_KILL,
2578                           "HW and/or SW RF Kill no longer active, restarting "
2579                           "device\n");
2580                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2581                         queue_work(priv->workqueue, &priv->restart);
2582         } else {
2583                 /* make sure mac80211 stop sending Tx frame */
2584                 if (priv->mac80211_registered)
2585                         ieee80211_stop_queues(priv->hw);
2586
2587                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2588                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2589                                           "disabled by SW switch\n");
2590                 else
2591                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2592                                     "Kill switch must be turned off for "
2593                                     "wireless networking to work.\n");
2594         }
2595         iwl_rfkill_set_hw_state(priv);
2596
2597         mutex_unlock(&priv->mutex);
2598 }
2599
2600 static void iwl4965_bg_set_monitor(struct work_struct *work)
2601 {
2602         struct iwl_priv *priv = container_of(work,
2603                                 struct iwl_priv, set_monitor);
2604         int ret;
2605
2606         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2607
2608         mutex_lock(&priv->mutex);
2609
2610         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2611
2612         if (ret) {
2613                 if (ret == -EAGAIN)
2614                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2615                 else
2616                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2617         }
2618
2619         mutex_unlock(&priv->mutex);
2620 }
2621
2622 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2623 {
2624         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2625                         run_time_calib_work);
2626
2627         mutex_lock(&priv->mutex);
2628
2629         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2630             test_bit(STATUS_SCANNING, &priv->status)) {
2631                 mutex_unlock(&priv->mutex);
2632                 return;
2633         }
2634
2635         if (priv->start_calib) {
2636                 iwl_chain_noise_calibration(priv, &priv->statistics);
2637
2638                 iwl_sensitivity_calibration(priv, &priv->statistics);
2639         }
2640
2641         mutex_unlock(&priv->mutex);
2642         return;
2643 }
2644
2645 static void iwl4965_bg_up(struct work_struct *data)
2646 {
2647         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2648
2649         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2650                 return;
2651
2652         mutex_lock(&priv->mutex);
2653         __iwl4965_up(priv);
2654         mutex_unlock(&priv->mutex);
2655 }
2656
2657 static void iwl4965_bg_restart(struct work_struct *data)
2658 {
2659         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2660
2661         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2662                 return;
2663
2664         iwl4965_down(priv);
2665         queue_work(priv->workqueue, &priv->up);
2666 }
2667
2668 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2669 {
2670         struct iwl_priv *priv =
2671             container_of(data, struct iwl_priv, rx_replenish);
2672
2673         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2674                 return;
2675
2676         mutex_lock(&priv->mutex);
2677         iwl_rx_replenish(priv);
2678         mutex_unlock(&priv->mutex);
2679 }
2680
2681 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2682
2683 static void iwl4965_post_associate(struct iwl_priv *priv)
2684 {
2685         struct ieee80211_conf *conf = NULL;
2686         int ret = 0;
2687         DECLARE_MAC_BUF(mac);
2688
2689         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2690                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2691                 return;
2692         }
2693
2694         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2695                         priv->assoc_id,
2696                         print_mac(mac, priv->active_rxon.bssid_addr));
2697
2698
2699         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2700                 return;
2701
2702
2703         if (!priv->vif || !priv->is_open)
2704                 return;
2705
2706         iwl_scan_cancel_timeout(priv, 200);
2707
2708         conf = ieee80211_get_hw_conf(priv->hw);
2709
2710         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2711         iwl4965_commit_rxon(priv);
2712
2713         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2714         iwl4965_setup_rxon_timing(priv);
2715         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2716                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2717         if (ret)
2718                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2719                             "Attempting to continue.\n");
2720
2721         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2722
2723         if (priv->current_ht_config.is_ht)
2724                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2725
2726         iwl_set_rxon_chain(priv);
2727         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2728
2729         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2730                         priv->assoc_id, priv->beacon_int);
2731
2732         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2733                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2734         else
2735                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2736
2737         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2738                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2739                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2740                 else
2741                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2742
2743                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2744                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2745
2746         }
2747
2748         iwl4965_commit_rxon(priv);
2749
2750         switch (priv->iw_mode) {
2751         case IEEE80211_IF_TYPE_STA:
2752                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2753                 break;
2754
2755         case IEEE80211_IF_TYPE_IBSS:
2756
2757                 /* assume default assoc id */
2758                 priv->assoc_id = 1;
2759
2760                 iwl_rxon_add_station(priv, priv->bssid, 0);
2761                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2762                 iwl4965_send_beacon_cmd(priv);
2763
2764                 break;
2765
2766         default:
2767                 IWL_ERROR("%s Should not be called in %d mode\n",
2768                                 __FUNCTION__, priv->iw_mode);
2769                 break;
2770         }
2771
2772         iwl4965_sequence_reset(priv);
2773
2774         /* Enable Rx differential gain and sensitivity calibrations */
2775         iwl_chain_noise_reset(priv);
2776         priv->start_calib = 1;
2777
2778         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2779                 priv->assoc_station_added = 1;
2780
2781         iwl4965_activate_qos(priv, 0);
2782
2783         iwl_power_update_mode(priv, 0);
2784         /* we have just associated, don't start scan too early */
2785         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2786 }
2787
2788
2789 static void iwl4965_bg_post_associate(struct work_struct *data)
2790 {
2791         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2792                                              post_associate.work);
2793
2794         mutex_lock(&priv->mutex);
2795         iwl4965_post_associate(priv);
2796         mutex_unlock(&priv->mutex);
2797
2798 }
2799
2800 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2801
2802 static void iwl_bg_scan_completed(struct work_struct *work)
2803 {
2804         struct iwl_priv *priv =
2805             container_of(work, struct iwl_priv, scan_completed);
2806
2807         IWL_DEBUG_SCAN("SCAN complete scan\n");
2808
2809         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2810                 return;
2811
2812         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2813                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2814
2815         ieee80211_scan_completed(priv->hw);
2816
2817         /* Since setting the TXPOWER may have been deferred while
2818          * performing the scan, fire one off */
2819         mutex_lock(&priv->mutex);
2820         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2821         mutex_unlock(&priv->mutex);
2822 }
2823
2824 /*****************************************************************************
2825  *
2826  * mac80211 entry point functions
2827  *
2828  *****************************************************************************/
2829
2830 #define UCODE_READY_TIMEOUT     (2 * HZ)
2831
2832 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2833 {
2834         struct iwl_priv *priv = hw->priv;
2835         int ret;
2836
2837         IWL_DEBUG_MAC80211("enter\n");
2838
2839         if (pci_enable_device(priv->pci_dev)) {
2840                 IWL_ERROR("Fail to pci_enable_device\n");
2841                 return -ENODEV;
2842         }
2843         pci_restore_state(priv->pci_dev);
2844         pci_enable_msi(priv->pci_dev);
2845
2846         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2847                           DRV_NAME, priv);
2848         if (ret) {
2849                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2850                 goto out_disable_msi;
2851         }
2852
2853         /* we should be verifying the device is ready to be opened */
2854         mutex_lock(&priv->mutex);
2855
2856         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2857         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2858          * ucode filename and max sizes are card-specific. */
2859
2860         if (!priv->ucode_code.len) {
2861                 ret = iwl4965_read_ucode(priv);
2862                 if (ret) {
2863                         IWL_ERROR("Could not read microcode: %d\n", ret);
2864                         mutex_unlock(&priv->mutex);
2865                         goto out_release_irq;
2866                 }
2867         }
2868
2869         ret = __iwl4965_up(priv);
2870
2871         mutex_unlock(&priv->mutex);
2872
2873         if (ret)
2874                 goto out_release_irq;
2875
2876         IWL_DEBUG_INFO("Start UP work done.\n");
2877
2878         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2879                 return 0;
2880
2881         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2882          * mac80211 will not be run successfully. */
2883         if (priv->ucode_type == UCODE_RT) {
2884                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2885                                 test_bit(STATUS_READY, &priv->status),
2886                                 UCODE_READY_TIMEOUT);
2887                 if (!ret) {
2888                         if (!test_bit(STATUS_READY, &priv->status)) {
2889                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2890                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2891                                 ret = -ETIMEDOUT;
2892                                 goto out_release_irq;
2893                         }
2894                 }
2895
2896                 priv->is_open = 1;
2897         }
2898         IWL_DEBUG_MAC80211("leave\n");
2899         return 0;
2900
2901 out_release_irq:
2902         free_irq(priv->pci_dev->irq, priv);
2903 out_disable_msi:
2904         pci_disable_msi(priv->pci_dev);
2905         pci_disable_device(priv->pci_dev);
2906         priv->is_open = 0;
2907         IWL_DEBUG_MAC80211("leave - failed\n");
2908         return ret;
2909 }
2910
2911 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2912 {
2913         struct iwl_priv *priv = hw->priv;
2914
2915         IWL_DEBUG_MAC80211("enter\n");
2916
2917         if (!priv->is_open) {
2918                 IWL_DEBUG_MAC80211("leave - skip\n");
2919                 return;
2920         }
2921
2922         priv->is_open = 0;
2923
2924         if (iwl_is_ready_rf(priv)) {
2925                 /* stop mac, cancel any scan request and clear
2926                  * RXON_FILTER_ASSOC_MSK BIT
2927                  */
2928                 mutex_lock(&priv->mutex);
2929                 iwl_scan_cancel_timeout(priv, 100);
2930                 cancel_delayed_work(&priv->post_associate);
2931                 mutex_unlock(&priv->mutex);
2932         }
2933
2934         iwl4965_down(priv);
2935
2936         flush_workqueue(priv->workqueue);
2937         free_irq(priv->pci_dev->irq, priv);
2938         pci_disable_msi(priv->pci_dev);
2939         pci_save_state(priv->pci_dev);
2940         pci_disable_device(priv->pci_dev);
2941
2942         IWL_DEBUG_MAC80211("leave\n");
2943 }
2944
2945 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2946 {
2947         struct iwl_priv *priv = hw->priv;
2948
2949         IWL_DEBUG_MAC80211("enter\n");
2950
2951         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2952                 IWL_DEBUG_MAC80211("leave - monitor\n");
2953                 return -1;
2954         }
2955
2956         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2957                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2958
2959         if (iwl_tx_skb(priv, skb))
2960                 dev_kfree_skb_any(skb);
2961
2962         IWL_DEBUG_MAC80211("leave\n");
2963         return 0;
2964 }
2965
2966 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2967                                  struct ieee80211_if_init_conf *conf)
2968 {
2969         struct iwl_priv *priv = hw->priv;
2970         unsigned long flags;
2971         DECLARE_MAC_BUF(mac);
2972
2973         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2974
2975         if (priv->vif) {
2976                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2977                 return -EOPNOTSUPP;
2978         }
2979
2980         spin_lock_irqsave(&priv->lock, flags);
2981         priv->vif = conf->vif;
2982
2983         spin_unlock_irqrestore(&priv->lock, flags);
2984
2985         mutex_lock(&priv->mutex);
2986
2987         if (conf->mac_addr) {
2988                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2989                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2990         }
2991
2992         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2993                 /* we are not ready, will run again when ready */
2994                 set_bit(STATUS_MODE_PENDING, &priv->status);
2995
2996         mutex_unlock(&priv->mutex);
2997
2998         IWL_DEBUG_MAC80211("leave\n");
2999         return 0;
3000 }
3001
3002 /**
3003  * iwl4965_mac_config - mac80211 config callback
3004  *
3005  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
3006  * be set inappropriately and the driver currently sets the hardware up to
3007  * use it whenever needed.
3008  */
3009 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
3010 {
3011         struct iwl_priv *priv = hw->priv;
3012         const struct iwl_channel_info *ch_info;
3013         unsigned long flags;
3014         int ret = 0;
3015         u16 channel;
3016
3017         mutex_lock(&priv->mutex);
3018         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
3019
3020         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
3021
3022
3023         if (priv->cfg->ops->lib->radio_kill_sw &&
3024             priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled)) {
3025                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
3026                 mutex_unlock(&priv->mutex);
3027         }
3028
3029         if (!iwl_is_ready(priv)) {
3030                 IWL_DEBUG_MAC80211("leave - not ready\n");
3031                 ret = -EIO;
3032                 goto out;
3033         }
3034
3035         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
3036                      test_bit(STATUS_SCANNING, &priv->status))) {
3037                 IWL_DEBUG_MAC80211("leave - scanning\n");
3038                 set_bit(STATUS_CONF_PENDING, &priv->status);
3039                 mutex_unlock(&priv->mutex);
3040                 return 0;
3041         }
3042
3043         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
3044         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
3045         if (!is_channel_valid(ch_info)) {
3046                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
3047                 ret = -EINVAL;
3048                 goto out;
3049         }
3050
3051         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
3052             !is_channel_ibss(ch_info)) {
3053                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
3054                         conf->channel->hw_value, conf->channel->band);
3055                 ret = -EINVAL;
3056                 goto out;
3057         }
3058
3059         spin_lock_irqsave(&priv->lock, flags);
3060
3061         /* if we are switching from ht to 2.4 clear flags
3062          * from any ht related info since 2.4 does not
3063          * support ht */
3064         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
3065 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3066             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
3067 #endif
3068         )
3069                 priv->staging_rxon.flags = 0;
3070
3071         iwl_set_rxon_channel(priv, conf->channel->band, channel);
3072
3073         iwl_set_flags_for_band(priv, conf->channel->band);
3074
3075         /* The list of supported rates and rate mask can be different
3076          * for each band; since the band may have changed, reset
3077          * the rate mask to what mac80211 lists */
3078         iwl4965_set_rate(priv);
3079
3080         spin_unlock_irqrestore(&priv->lock, flags);
3081
3082 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
3083         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
3084                 iwl4965_hw_channel_switch(priv, conf->channel);
3085                 goto out;
3086         }
3087 #endif
3088
3089         if (!conf->radio_enabled) {
3090                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
3091                 goto out;
3092         }
3093
3094         if (iwl_is_rfkill(priv)) {
3095                 IWL_DEBUG_MAC80211("leave - RF kill\n");
3096                 ret = -EIO;
3097                 goto out;
3098         }
3099
3100         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
3101                            priv->tx_power_user_lmt, conf->power_level);
3102
3103         iwl_set_tx_power(priv, conf->power_level, false);
3104
3105         iwl4965_set_rate(priv);
3106
3107         if (memcmp(&priv->active_rxon,
3108                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
3109                 iwl4965_commit_rxon(priv);
3110         else
3111                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
3112
3113         IWL_DEBUG_MAC80211("leave\n");
3114
3115 out:
3116         clear_bit(STATUS_CONF_PENDING, &priv->status);
3117         mutex_unlock(&priv->mutex);
3118         return ret;
3119 }
3120
3121 static void iwl4965_config_ap(struct iwl_priv *priv)
3122 {
3123         int ret = 0;
3124
3125         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3126                 return;
3127
3128         /* The following should be done only at AP bring up */
3129         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
3130
3131                 /* RXON - unassoc (to set timing command) */
3132                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3133                 iwl4965_commit_rxon(priv);
3134
3135                 /* RXON Timing */
3136                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3137                 iwl4965_setup_rxon_timing(priv);
3138                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3139                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
3140                 if (ret)
3141                         IWL_WARNING("REPLY_RXON_TIMING failed - "
3142                                         "Attempting to continue.\n");
3143
3144                 iwl_set_rxon_chain(priv);
3145
3146                 /* FIXME: what should be the assoc_id for AP? */
3147                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3148                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3149                         priv->staging_rxon.flags |=
3150                                 RXON_FLG_SHORT_PREAMBLE_MSK;
3151                 else
3152                         priv->staging_rxon.flags &=
3153                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
3154
3155                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3156                         if (priv->assoc_capability &
3157                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
3158                                 priv->staging_rxon.flags |=
3159                                         RXON_FLG_SHORT_SLOT_MSK;
3160                         else
3161                                 priv->staging_rxon.flags &=
3162                                         ~RXON_FLG_SHORT_SLOT_MSK;
3163
3164                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3165                                 priv->staging_rxon.flags &=
3166                                         ~RXON_FLG_SHORT_SLOT_MSK;
3167                 }
3168                 /* restore RXON assoc */
3169                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3170                 iwl4965_commit_rxon(priv);
3171                 iwl4965_activate_qos(priv, 1);
3172                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3173         }
3174         iwl4965_send_beacon_cmd(priv);
3175
3176         /* FIXME - we need to add code here to detect a totally new
3177          * configuration, reset the AP, unassoc, rxon timing, assoc,
3178          * clear sta table, add BCAST sta... */
3179 }
3180
3181 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
3182                                         struct ieee80211_vif *vif,
3183                                     struct ieee80211_if_conf *conf)
3184 {
3185         struct iwl_priv *priv = hw->priv;
3186         DECLARE_MAC_BUF(mac);
3187         unsigned long flags;
3188         int rc;
3189
3190         if (conf == NULL)
3191                 return -EIO;
3192
3193         if (priv->vif != vif) {
3194                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
3195                 return 0;
3196         }
3197
3198         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
3199             (!conf->beacon || !conf->ssid_len)) {
3200                 IWL_DEBUG_MAC80211
3201                     ("Leaving in AP mode because HostAPD is not ready.\n");
3202                 return 0;
3203         }
3204
3205         if (!iwl_is_alive(priv))
3206                 return -EAGAIN;
3207
3208         mutex_lock(&priv->mutex);
3209
3210         if (conf->bssid)
3211                 IWL_DEBUG_MAC80211("bssid: %s\n",
3212                                    print_mac(mac, conf->bssid));
3213
3214 /*
3215  * very dubious code was here; the probe filtering flag is never set:
3216  *
3217         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
3218             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
3219  */
3220
3221         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3222                 if (!conf->bssid) {
3223                         conf->bssid = priv->mac_addr;
3224                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3225                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3226                                            print_mac(mac, conf->bssid));
3227                 }
3228                 if (priv->ibss_beacon)
3229                         dev_kfree_skb(priv->ibss_beacon);
3230
3231                 priv->ibss_beacon = conf->beacon;
3232         }
3233
3234         if (iwl_is_rfkill(priv))
3235                 goto done;
3236
3237         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3238             !is_multicast_ether_addr(conf->bssid)) {
3239                 /* If there is currently a HW scan going on in the background
3240                  * then we need to cancel it else the RXON below will fail. */
3241                 if (iwl_scan_cancel_timeout(priv, 100)) {
3242                         IWL_WARNING("Aborted scan still in progress "
3243                                     "after 100ms\n");
3244                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3245                         mutex_unlock(&priv->mutex);
3246                         return -EAGAIN;
3247                 }
3248                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3249
3250                 /* TODO: Audit driver for usage of these members and see
3251                  * if mac80211 deprecates them (priv->bssid looks like it
3252                  * shouldn't be there, but I haven't scanned the IBSS code
3253                  * to verify) - jpk */
3254                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3255
3256                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3257                         iwl4965_config_ap(priv);
3258                 else {
3259                         rc = iwl4965_commit_rxon(priv);
3260                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3261                                 iwl_rxon_add_station(
3262                                         priv, priv->active_rxon.bssid_addr, 1);
3263                 }
3264
3265         } else {
3266                 iwl_scan_cancel_timeout(priv, 100);
3267                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3268                 iwl4965_commit_rxon(priv);
3269         }
3270
3271  done:
3272         spin_lock_irqsave(&priv->lock, flags);
3273         if (!conf->ssid_len)
3274                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3275         else
3276                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3277
3278         priv->essid_len = conf->ssid_len;
3279         spin_unlock_irqrestore(&priv->lock, flags);
3280
3281         IWL_DEBUG_MAC80211("leave\n");
3282         mutex_unlock(&priv->mutex);
3283
3284         return 0;
3285 }
3286
3287 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3288                                  unsigned int changed_flags,
3289                                  unsigned int *total_flags,
3290                                  int mc_count, struct dev_addr_list *mc_list)
3291 {
3292         /*
3293          * XXX: dummy
3294          * see also iwl4965_connection_init_rx_config
3295          */
3296         struct iwl_priv *priv = hw->priv;
3297         int new_flags = 0;
3298         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3299                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3300                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3301                                            IEEE80211_IF_TYPE_MNTR,
3302                                            changed_flags, *total_flags);
3303                         /* queue work 'cuz mac80211 is holding a lock which
3304                          * prevents us from issuing (synchronous) f/w cmds */
3305                         queue_work(priv->workqueue, &priv->set_monitor);
3306                         new_flags &= FIF_PROMISC_IN_BSS |
3307                                      FIF_OTHER_BSS |
3308                                      FIF_ALLMULTI;
3309                 }
3310         }
3311         *total_flags = new_flags;
3312 }
3313
3314 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3315                                      struct ieee80211_if_init_conf *conf)
3316 {
3317         struct iwl_priv *priv = hw->priv;
3318
3319         IWL_DEBUG_MAC80211("enter\n");
3320
3321         mutex_lock(&priv->mutex);
3322
3323         if (iwl_is_ready_rf(priv)) {
3324                 iwl_scan_cancel_timeout(priv, 100);
3325                 cancel_delayed_work(&priv->post_associate);
3326                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3327                 iwl4965_commit_rxon(priv);
3328         }
3329         if (priv->vif == conf->vif) {
3330                 priv->vif = NULL;
3331                 memset(priv->bssid, 0, ETH_ALEN);
3332                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3333                 priv->essid_len = 0;
3334         }
3335         mutex_unlock(&priv->mutex);
3336
3337         IWL_DEBUG_MAC80211("leave\n");
3338
3339 }
3340
3341 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3342 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3343                                      struct ieee80211_vif *vif,
3344                                      struct ieee80211_bss_conf *bss_conf,
3345                                      u32 changes)
3346 {
3347         struct iwl_priv *priv = hw->priv;
3348
3349         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3350
3351         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3352                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3353                                    bss_conf->use_short_preamble);
3354                 if (bss_conf->use_short_preamble)
3355                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3356                 else
3357                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3358         }
3359
3360         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3361                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3362                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3363                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3364                 else
3365                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3366         }
3367
3368         if (changes & BSS_CHANGED_HT) {
3369                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3370                 iwl4965_ht_conf(priv, bss_conf);
3371                 iwl_set_rxon_chain(priv);
3372         }
3373
3374         if (changes & BSS_CHANGED_ASSOC) {
3375                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3376                 /* This should never happen as this function should
3377                  * never be called from interrupt context. */
3378                 if (WARN_ON_ONCE(in_interrupt()))
3379                         return;
3380                 if (bss_conf->assoc) {
3381                         priv->assoc_id = bss_conf->aid;
3382                         priv->beacon_int = bss_conf->beacon_int;
3383                         priv->timestamp = bss_conf->timestamp;
3384                         priv->assoc_capability = bss_conf->assoc_capability;
3385                         priv->next_scan_jiffies = jiffies +
3386                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3387                         mutex_lock(&priv->mutex);
3388                         iwl4965_post_associate(priv);
3389                         mutex_unlock(&priv->mutex);
3390                 } else {
3391                         priv->assoc_id = 0;
3392                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3393                 }
3394         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3395                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3396                         iwl_send_rxon_assoc(priv);
3397         }
3398
3399 }
3400
3401 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3402 {
3403         int rc = 0;
3404         unsigned long flags;
3405         struct iwl_priv *priv = hw->priv;
3406
3407         IWL_DEBUG_MAC80211("enter\n");
3408
3409         mutex_lock(&priv->mutex);
3410         spin_lock_irqsave(&priv->lock, flags);
3411
3412         if (!iwl_is_ready_rf(priv)) {
3413                 rc = -EIO;
3414                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3415                 goto out_unlock;
3416         }
3417
3418         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3419                 rc = -EIO;
3420                 IWL_ERROR("ERROR: APs don't scan\n");
3421                 goto out_unlock;
3422         }
3423
3424         /* we don't schedule scan within next_scan_jiffies period */
3425         if (priv->next_scan_jiffies &&
3426                         time_after(priv->next_scan_jiffies, jiffies)) {
3427                 rc = -EAGAIN;
3428                 goto out_unlock;
3429         }
3430         /* if we just finished scan ask for delay */
3431         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3432                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3433                 rc = -EAGAIN;
3434                 goto out_unlock;
3435         }
3436         if (len) {
3437                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3438                                iwl_escape_essid(ssid, len), (int)len);
3439
3440                 priv->one_direct_scan = 1;
3441                 priv->direct_ssid_len = (u8)
3442                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3443                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3444         } else
3445                 priv->one_direct_scan = 0;
3446
3447         rc = iwl_scan_initiate(priv);
3448
3449         IWL_DEBUG_MAC80211("leave\n");
3450
3451 out_unlock:
3452         spin_unlock_irqrestore(&priv->lock, flags);
3453         mutex_unlock(&priv->mutex);
3454
3455         return rc;
3456 }
3457
3458 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3459                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3460                         u32 iv32, u16 *phase1key)
3461 {
3462         struct iwl_priv *priv = hw->priv;
3463         u8 sta_id = IWL_INVALID_STATION;
3464         unsigned long flags;
3465         __le16 key_flags = 0;
3466         int i;
3467         DECLARE_MAC_BUF(mac);
3468
3469         IWL_DEBUG_MAC80211("enter\n");
3470
3471         sta_id = iwl_find_station(priv, addr);
3472         if (sta_id == IWL_INVALID_STATION) {
3473                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3474                                    print_mac(mac, addr));
3475                 return;
3476         }
3477
3478         iwl_scan_cancel_timeout(priv, 100);
3479
3480         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3481         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3482         key_flags &= ~STA_KEY_FLG_INVALID;
3483
3484         if (sta_id == priv->hw_params.bcast_sta_id)
3485                 key_flags |= STA_KEY_MULTICAST_MSK;
3486
3487         spin_lock_irqsave(&priv->sta_lock, flags);
3488
3489         priv->stations[sta_id].sta.key.key_flags = key_flags;
3490         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3491
3492         for (i = 0; i < 5; i++)
3493                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3494                         cpu_to_le16(phase1key[i]);
3495
3496         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3497         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3498
3499         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3500
3501         spin_unlock_irqrestore(&priv->sta_lock, flags);
3502
3503         IWL_DEBUG_MAC80211("leave\n");
3504 }
3505
3506 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3507                            const u8 *local_addr, const u8 *addr,
3508                            struct ieee80211_key_conf *key)
3509 {
3510         struct iwl_priv *priv = hw->priv;
3511         DECLARE_MAC_BUF(mac);
3512         int ret = 0;
3513         u8 sta_id = IWL_INVALID_STATION;
3514         u8 is_default_wep_key = 0;
3515
3516         IWL_DEBUG_MAC80211("enter\n");
3517
3518         if (priv->hw_params.sw_crypto) {
3519                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3520                 return -EOPNOTSUPP;
3521         }
3522
3523         if (is_zero_ether_addr(addr))
3524                 /* only support pairwise keys */
3525                 return -EOPNOTSUPP;
3526
3527         sta_id = iwl_find_station(priv, addr);
3528         if (sta_id == IWL_INVALID_STATION) {
3529                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3530                                    print_mac(mac, addr));
3531                 return -EINVAL;
3532
3533         }
3534
3535         mutex_lock(&priv->mutex);
3536         iwl_scan_cancel_timeout(priv, 100);
3537         mutex_unlock(&priv->mutex);
3538
3539         /* If we are getting WEP group key and we didn't receive any key mapping
3540          * so far, we are in legacy wep mode (group key only), otherwise we are
3541          * in 1X mode.
3542          * In legacy wep mode, we use another host command to the uCode */
3543         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3544                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3545                 if (cmd == SET_KEY)
3546                         is_default_wep_key = !priv->key_mapping_key;
3547                 else
3548                         is_default_wep_key =
3549                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3550         }
3551
3552         switch (cmd) {
3553         case SET_KEY:
3554                 if (is_default_wep_key)
3555                         ret = iwl_set_default_wep_key(priv, key);
3556                 else
3557                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3558
3559                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3560                 break;
3561         case DISABLE_KEY:
3562                 if (is_default_wep_key)
3563                         ret = iwl_remove_default_wep_key(priv, key);
3564                 else
3565                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3566
3567                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3568                 break;
3569         default:
3570                 ret = -EINVAL;
3571         }
3572
3573         IWL_DEBUG_MAC80211("leave\n");
3574
3575         return ret;
3576 }
3577
3578 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3579                            const struct ieee80211_tx_queue_params *params)
3580 {
3581         struct iwl_priv *priv = hw->priv;
3582         unsigned long flags;
3583         int q;
3584
3585         IWL_DEBUG_MAC80211("enter\n");
3586
3587         if (!iwl_is_ready_rf(priv)) {
3588                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3589                 return -EIO;
3590         }
3591
3592         if (queue >= AC_NUM) {
3593                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3594                 return 0;
3595         }
3596
3597         if (!priv->qos_data.qos_enable) {
3598                 priv->qos_data.qos_active = 0;
3599                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3600                 return 0;
3601         }
3602         q = AC_NUM - 1 - queue;
3603
3604         spin_lock_irqsave(&priv->lock, flags);
3605
3606         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3607         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3608         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3609         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3610                         cpu_to_le16((params->txop * 32));
3611
3612         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3613         priv->qos_data.qos_active = 1;
3614
3615         spin_unlock_irqrestore(&priv->lock, flags);
3616
3617         mutex_lock(&priv->mutex);
3618         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3619                 iwl4965_activate_qos(priv, 1);
3620         else if (priv->assoc_id && iwl_is_associated(priv))
3621                 iwl4965_activate_qos(priv, 0);
3622
3623         mutex_unlock(&priv->mutex);
3624
3625         IWL_DEBUG_MAC80211("leave\n");
3626         return 0;
3627 }
3628
3629 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3630                                 struct ieee80211_tx_queue_stats *stats)
3631 {
3632         struct iwl_priv *priv = hw->priv;
3633         int i, avail;
3634         struct iwl_tx_queue *txq;
3635         struct iwl_queue *q;
3636         unsigned long flags;
3637
3638         IWL_DEBUG_MAC80211("enter\n");
3639
3640         if (!iwl_is_ready_rf(priv)) {
3641                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3642                 return -EIO;
3643         }
3644
3645         spin_lock_irqsave(&priv->lock, flags);
3646
3647         for (i = 0; i < AC_NUM; i++) {
3648                 txq = &priv->txq[i];
3649                 q = &txq->q;
3650                 avail = iwl_queue_space(q);
3651
3652                 stats[i].len = q->n_window - avail;
3653                 stats[i].limit = q->n_window - q->high_mark;
3654                 stats[i].count = q->n_window;
3655
3656         }
3657         spin_unlock_irqrestore(&priv->lock, flags);
3658
3659         IWL_DEBUG_MAC80211("leave\n");
3660
3661         return 0;
3662 }
3663
3664 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3665                              struct ieee80211_low_level_stats *stats)
3666 {
3667         struct iwl_priv *priv = hw->priv;
3668
3669         priv = hw->priv;
3670         IWL_DEBUG_MAC80211("enter\n");
3671         IWL_DEBUG_MAC80211("leave\n");
3672
3673         return 0;
3674 }
3675
3676 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3677 {
3678         struct iwl_priv *priv;
3679
3680         priv = hw->priv;
3681         IWL_DEBUG_MAC80211("enter\n");
3682         IWL_DEBUG_MAC80211("leave\n");
3683
3684         return 0;
3685 }
3686
3687 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3688 {
3689         struct iwl_priv *priv = hw->priv;
3690         unsigned long flags;
3691
3692         mutex_lock(&priv->mutex);
3693         IWL_DEBUG_MAC80211("enter\n");
3694
3695         priv->lq_mngr.lq_ready = 0;
3696         spin_lock_irqsave(&priv->lock, flags);
3697         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3698         spin_unlock_irqrestore(&priv->lock, flags);
3699
3700         iwl_reset_qos(priv);
3701
3702         cancel_delayed_work(&priv->post_associate);
3703
3704         spin_lock_irqsave(&priv->lock, flags);
3705         priv->assoc_id = 0;
3706         priv->assoc_capability = 0;
3707         priv->assoc_station_added = 0;
3708
3709         /* new association get rid of ibss beacon skb */
3710         if (priv->ibss_beacon)
3711                 dev_kfree_skb(priv->ibss_beacon);
3712
3713         priv->ibss_beacon = NULL;
3714
3715         priv->beacon_int = priv->hw->conf.beacon_int;
3716         priv->timestamp = 0;
3717         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3718                 priv->beacon_int = 0;
3719
3720         spin_unlock_irqrestore(&priv->lock, flags);
3721
3722         if (!iwl_is_ready_rf(priv)) {
3723                 IWL_DEBUG_MAC80211("leave - not ready\n");
3724                 mutex_unlock(&priv->mutex);
3725                 return;
3726         }
3727
3728         /* we are restarting association process
3729          * clear RXON_FILTER_ASSOC_MSK bit
3730          */
3731         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3732                 iwl_scan_cancel_timeout(priv, 100);
3733                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3734                 iwl4965_commit_rxon(priv);
3735         }
3736
3737         iwl_power_update_mode(priv, 0);
3738
3739         /* Per mac80211.h: This is only used in IBSS mode... */
3740         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3741
3742                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3743                 mutex_unlock(&priv->mutex);
3744                 return;
3745         }
3746
3747         iwl4965_set_rate(priv);
3748
3749         mutex_unlock(&priv->mutex);
3750
3751         IWL_DEBUG_MAC80211("leave\n");
3752 }
3753
3754 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3755 {
3756         struct iwl_priv *priv = hw->priv;
3757         unsigned long flags;
3758
3759         mutex_lock(&priv->mutex);
3760         IWL_DEBUG_MAC80211("enter\n");
3761
3762         if (!iwl_is_ready_rf(priv)) {
3763                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3764                 mutex_unlock(&priv->mutex);
3765                 return -EIO;
3766         }
3767
3768         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3769                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3770                 mutex_unlock(&priv->mutex);
3771                 return -EIO;
3772         }
3773
3774         spin_lock_irqsave(&priv->lock, flags);
3775
3776         if (priv->ibss_beacon)
3777                 dev_kfree_skb(priv->ibss_beacon);
3778
3779         priv->ibss_beacon = skb;
3780
3781         priv->assoc_id = 0;
3782
3783         IWL_DEBUG_MAC80211("leave\n");
3784         spin_unlock_irqrestore(&priv->lock, flags);
3785
3786         iwl_reset_qos(priv);
3787
3788         iwl4965_post_associate(priv);
3789
3790         mutex_unlock(&priv->mutex);
3791
3792         return 0;
3793 }
3794
3795 /*****************************************************************************
3796  *
3797  * sysfs attributes
3798  *
3799  *****************************************************************************/
3800
3801 #ifdef CONFIG_IWLWIFI_DEBUG
3802
3803 /*
3804  * The following adds a new attribute to the sysfs representation
3805  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3806  * used for controlling the debug level.
3807  *
3808  * See the level definitions in iwl for details.
3809  */
3810
3811 static ssize_t show_debug_level(struct device *d,
3812                                 struct device_attribute *attr, char *buf)
3813 {
3814         struct iwl_priv *priv = d->driver_data;
3815
3816         return sprintf(buf, "0x%08X\n", priv->debug_level);
3817 }
3818 static ssize_t store_debug_level(struct device *d,
3819                                 struct device_attribute *attr,
3820                                  const char *buf, size_t count)
3821 {
3822         struct iwl_priv *priv = d->driver_data;
3823         char *p = (char *)buf;
3824         u32 val;
3825
3826         val = simple_strtoul(p, &p, 0);
3827         if (p == buf)
3828                 printk(KERN_INFO DRV_NAME
3829                        ": %s is not in hex or decimal form.\n", buf);
3830         else
3831                 priv->debug_level = val;
3832
3833         return strnlen(buf, count);
3834 }
3835
3836 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3837                         show_debug_level, store_debug_level);
3838
3839
3840 #endif /* CONFIG_IWLWIFI_DEBUG */
3841
3842
3843 static ssize_t show_version(struct device *d,
3844                                 struct device_attribute *attr, char *buf)
3845 {
3846         struct iwl_priv *priv = d->driver_data;
3847         struct iwl_alive_resp *palive = &priv->card_alive;
3848
3849         if (palive->is_valid)
3850                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3851                                     "fw type: 0x%01X 0x%01X\n",
3852                                 palive->ucode_major, palive->ucode_minor,
3853                                 palive->sw_rev[0], palive->sw_rev[1],
3854                                 palive->ver_type, palive->ver_subtype);
3855
3856         else
3857                 return sprintf(buf, "fw not loaded\n");
3858 }
3859
3860 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3861
3862 static ssize_t show_temperature(struct device *d,
3863                                 struct device_attribute *attr, char *buf)
3864 {
3865         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3866
3867         if (!iwl_is_alive(priv))
3868                 return -EAGAIN;
3869
3870         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
3871 }
3872
3873 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3874
3875 static ssize_t show_rs_window(struct device *d,
3876                               struct device_attribute *attr,
3877                               char *buf)
3878 {
3879         struct iwl_priv *priv = d->driver_data;
3880         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3881 }
3882 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3883
3884 static ssize_t show_tx_power(struct device *d,
3885                              struct device_attribute *attr, char *buf)
3886 {
3887         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3888         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3889 }
3890
3891 static ssize_t store_tx_power(struct device *d,
3892                               struct device_attribute *attr,
3893                               const char *buf, size_t count)
3894 {
3895         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3896         char *p = (char *)buf;
3897         u32 val;
3898
3899         val = simple_strtoul(p, &p, 10);
3900         if (p == buf)
3901                 printk(KERN_INFO DRV_NAME
3902                        ": %s is not in decimal form.\n", buf);
3903         else
3904                 iwl_set_tx_power(priv, val, false);
3905
3906         return count;
3907 }
3908
3909 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3910
3911 static ssize_t show_flags(struct device *d,
3912                           struct device_attribute *attr, char *buf)
3913 {
3914         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3915
3916         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3917 }
3918
3919 static ssize_t store_flags(struct device *d,
3920                            struct device_attribute *attr,
3921                            const char *buf, size_t count)
3922 {
3923         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3924         u32 flags = simple_strtoul(buf, NULL, 0);
3925
3926         mutex_lock(&priv->mutex);
3927         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3928                 /* Cancel any currently running scans... */
3929                 if (iwl_scan_cancel_timeout(priv, 100))
3930                         IWL_WARNING("Could not cancel scan.\n");
3931                 else {
3932                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3933                                        flags);
3934                         priv->staging_rxon.flags = cpu_to_le32(flags);
3935                         iwl4965_commit_rxon(priv);
3936                 }
3937         }
3938         mutex_unlock(&priv->mutex);
3939
3940         return count;
3941 }
3942
3943 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3944
3945 static ssize_t show_filter_flags(struct device *d,
3946                                  struct device_attribute *attr, char *buf)
3947 {
3948         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3949
3950         return sprintf(buf, "0x%04X\n",
3951                 le32_to_cpu(priv->active_rxon.filter_flags));
3952 }
3953
3954 static ssize_t store_filter_flags(struct device *d,
3955                                   struct device_attribute *attr,
3956                                   const char *buf, size_t count)
3957 {
3958         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3959         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3960
3961         mutex_lock(&priv->mutex);
3962         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3963                 /* Cancel any currently running scans... */
3964                 if (iwl_scan_cancel_timeout(priv, 100))
3965                         IWL_WARNING("Could not cancel scan.\n");
3966                 else {
3967                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3968                                        "0x%04X\n", filter_flags);
3969                         priv->staging_rxon.filter_flags =
3970                                 cpu_to_le32(filter_flags);
3971                         iwl4965_commit_rxon(priv);
3972                 }
3973         }
3974         mutex_unlock(&priv->mutex);
3975
3976         return count;
3977 }
3978
3979 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3980                    store_filter_flags);
3981
3982 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3983
3984 static ssize_t show_measurement(struct device *d,
3985                                 struct device_attribute *attr, char *buf)
3986 {
3987         struct iwl_priv *priv = dev_get_drvdata(d);
3988         struct iwl4965_spectrum_notification measure_report;
3989         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3990         u8 *data = (u8 *) & measure_report;
3991         unsigned long flags;
3992
3993         spin_lock_irqsave(&priv->lock, flags);
3994         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3995                 spin_unlock_irqrestore(&priv->lock, flags);
3996                 return 0;
3997         }
3998         memcpy(&measure_report, &priv->measure_report, size);
3999         priv->measurement_status = 0;
4000         spin_unlock_irqrestore(&priv->lock, flags);
4001
4002         while (size && (PAGE_SIZE - len)) {
4003                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4004                                    PAGE_SIZE - len, 1);
4005                 len = strlen(buf);
4006                 if (PAGE_SIZE - len)
4007                         buf[len++] = '\n';
4008
4009                 ofs += 16;
4010                 size -= min(size, 16U);
4011         }
4012
4013         return len;
4014 }
4015
4016 static ssize_t store_measurement(struct device *d,
4017                                  struct device_attribute *attr,
4018                                  const char *buf, size_t count)
4019 {
4020         struct iwl_priv *priv = dev_get_drvdata(d);
4021         struct ieee80211_measurement_params params = {
4022                 .channel = le16_to_cpu(priv->active_rxon.channel),
4023                 .start_time = cpu_to_le64(priv->last_tsf),
4024                 .duration = cpu_to_le16(1),
4025         };
4026         u8 type = IWL_MEASURE_BASIC;
4027         u8 buffer[32];
4028         u8 channel;
4029
4030         if (count) {
4031                 char *p = buffer;
4032                 strncpy(buffer, buf, min(sizeof(buffer), count));
4033                 channel = simple_strtoul(p, NULL, 0);
4034                 if (channel)
4035                         params.channel = channel;
4036
4037                 p = buffer;
4038                 while (*p && *p != ' ')
4039                         p++;
4040                 if (*p)
4041                         type = simple_strtoul(p + 1, NULL, 0);
4042         }
4043
4044         IWL_DEBUG_INFO("Invoking measurement of type %d on "
4045                        "channel %d (for '%s')\n", type, params.channel, buf);
4046         iwl4965_get_measurement(priv, &params, type);
4047
4048         return count;
4049 }
4050
4051 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
4052                    show_measurement, store_measurement);
4053 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
4054
4055 static ssize_t store_retry_rate(struct device *d,
4056                                 struct device_attribute *attr,
4057                                 const char *buf, size_t count)
4058 {
4059         struct iwl_priv *priv = dev_get_drvdata(d);
4060
4061         priv->retry_rate = simple_strtoul(buf, NULL, 0);
4062         if (priv->retry_rate <= 0)
4063                 priv->retry_rate = 1;
4064
4065         return count;
4066 }
4067
4068 static ssize_t show_retry_rate(struct device *d,
4069                                struct device_attribute *attr, char *buf)
4070 {
4071         struct iwl_priv *priv = dev_get_drvdata(d);
4072         return sprintf(buf, "%d", priv->retry_rate);
4073 }
4074
4075 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
4076                    store_retry_rate);
4077
4078 static ssize_t store_power_level(struct device *d,
4079                                  struct device_attribute *attr,
4080                                  const char *buf, size_t count)
4081 {
4082         struct iwl_priv *priv = dev_get_drvdata(d);
4083         int rc;
4084         int mode;
4085
4086         mode = simple_strtoul(buf, NULL, 0);
4087         mutex_lock(&priv->mutex);
4088
4089         if (!iwl_is_ready(priv)) {
4090                 rc = -EAGAIN;
4091                 goto out;
4092         }
4093
4094         rc = iwl_power_set_user_mode(priv, mode);
4095         if (rc) {
4096                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
4097                 goto out;
4098         }
4099         rc = count;
4100
4101  out:
4102         mutex_unlock(&priv->mutex);
4103         return rc;
4104 }
4105
4106 #define MAX_WX_STRING 80
4107
4108 /* Values are in microsecond */
4109 static const s32 timeout_duration[] = {
4110         350000,
4111         250000,
4112         75000,
4113         37000,
4114         25000,
4115 };
4116 static const s32 period_duration[] = {
4117         400000,
4118         700000,
4119         1000000,
4120         1000000,
4121         1000000
4122 };
4123
4124 static ssize_t show_power_level(struct device *d,
4125                                 struct device_attribute *attr, char *buf)
4126 {
4127         struct iwl_priv *priv = dev_get_drvdata(d);
4128         int level = priv->power_data.power_mode;
4129         char *p = buf;
4130
4131         p += sprintf(p, "%d ", level);
4132         switch (level) {
4133         case IWL_POWER_MODE_CAM:
4134         case IWL_POWER_AC:
4135                 p += sprintf(p, "(AC)");
4136                 break;
4137         case IWL_POWER_BATTERY:
4138                 p += sprintf(p, "(BATTERY)");
4139                 break;
4140         default:
4141                 p += sprintf(p,
4142                              "(Timeout %dms, Period %dms)",
4143                              timeout_duration[level - 1] / 1000,
4144                              period_duration[level - 1] / 1000);
4145         }
4146 /*
4147         if (!(priv->power_mode & IWL_POWER_ENABLED))
4148                 p += sprintf(p, " OFF\n");
4149         else
4150                 p += sprintf(p, " \n");
4151 */
4152         p += sprintf(p, " \n");
4153         return (p - buf + 1);
4154 }
4155
4156 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
4157                    store_power_level);
4158
4159 static ssize_t show_channels(struct device *d,
4160                              struct device_attribute *attr, char *buf)
4161 {
4162         /* all this shit doesn't belong into sysfs anyway */
4163         return 0;
4164 }
4165
4166 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4167
4168 static ssize_t show_statistics(struct device *d,
4169                                struct device_attribute *attr, char *buf)
4170 {
4171         struct iwl_priv *priv = dev_get_drvdata(d);
4172         u32 size = sizeof(struct iwl4965_notif_statistics);
4173         u32 len = 0, ofs = 0;
4174         u8 *data = (u8 *) & priv->statistics;
4175         int rc = 0;
4176
4177         if (!iwl_is_alive(priv))
4178                 return -EAGAIN;
4179
4180         mutex_lock(&priv->mutex);
4181         rc = iwl_send_statistics_request(priv, 0);
4182         mutex_unlock(&priv->mutex);
4183
4184         if (rc) {
4185                 len = sprintf(buf,
4186                               "Error sending statistics request: 0x%08X\n", rc);
4187                 return len;
4188         }
4189
4190         while (size && (PAGE_SIZE - len)) {
4191                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4192                                    PAGE_SIZE - len, 1);
4193                 len = strlen(buf);
4194                 if (PAGE_SIZE - len)
4195                         buf[len++] = '\n';
4196
4197                 ofs += 16;
4198                 size -= min(size, 16U);
4199         }
4200
4201         return len;
4202 }
4203
4204 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4205
4206 static ssize_t show_status(struct device *d,
4207                            struct device_attribute *attr, char *buf)
4208 {
4209         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4210         if (!iwl_is_alive(priv))
4211                 return -EAGAIN;
4212         return sprintf(buf, "0x%08x\n", (int)priv->status);
4213 }
4214
4215 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4216
4217 /*****************************************************************************
4218  *
4219  * driver setup and teardown
4220  *
4221  *****************************************************************************/
4222
4223 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4224 {
4225         priv->workqueue = create_workqueue(DRV_NAME);
4226
4227         init_waitqueue_head(&priv->wait_command_queue);
4228
4229         INIT_WORK(&priv->up, iwl4965_bg_up);
4230         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4231         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4232         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4233         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4234         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4235         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4236         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4237         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4238         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4239
4240         /* FIXME : remove when resolved PENDING */
4241         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4242         iwl_setup_scan_deferred_work(priv);
4243
4244         if (priv->cfg->ops->lib->setup_deferred_work)
4245                 priv->cfg->ops->lib->setup_deferred_work(priv);
4246
4247         init_timer(&priv->statistics_periodic);
4248         priv->statistics_periodic.data = (unsigned long)priv;
4249         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4250
4251         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4252                      iwl4965_irq_tasklet, (unsigned long)priv);
4253 }
4254
4255 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4256 {
4257         if (priv->cfg->ops->lib->cancel_deferred_work)
4258                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4259
4260         cancel_delayed_work_sync(&priv->init_alive_start);
4261         cancel_delayed_work(&priv->scan_check);
4262         cancel_delayed_work(&priv->alive_start);
4263         cancel_delayed_work(&priv->post_associate);
4264         cancel_work_sync(&priv->beacon_update);
4265         del_timer_sync(&priv->statistics_periodic);
4266 }
4267
4268 static struct attribute *iwl4965_sysfs_entries[] = {
4269         &dev_attr_channels.attr,
4270         &dev_attr_flags.attr,
4271         &dev_attr_filter_flags.attr,
4272 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4273         &dev_attr_measurement.attr,
4274 #endif
4275         &dev_attr_power_level.attr,
4276         &dev_attr_retry_rate.attr,
4277         &dev_attr_rs_window.attr,
4278         &dev_attr_statistics.attr,
4279         &dev_attr_status.attr,
4280         &dev_attr_temperature.attr,
4281         &dev_attr_tx_power.attr,
4282 #ifdef CONFIG_IWLWIFI_DEBUG
4283         &dev_attr_debug_level.attr,
4284 #endif
4285         &dev_attr_version.attr,
4286
4287         NULL
4288 };
4289
4290 static struct attribute_group iwl4965_attribute_group = {
4291         .name = NULL,           /* put in device directory */
4292         .attrs = iwl4965_sysfs_entries,
4293 };
4294
4295 static struct ieee80211_ops iwl4965_hw_ops = {
4296         .tx = iwl4965_mac_tx,
4297         .start = iwl4965_mac_start,
4298         .stop = iwl4965_mac_stop,
4299         .add_interface = iwl4965_mac_add_interface,
4300         .remove_interface = iwl4965_mac_remove_interface,
4301         .config = iwl4965_mac_config,
4302         .config_interface = iwl4965_mac_config_interface,
4303         .configure_filter = iwl4965_configure_filter,
4304         .set_key = iwl4965_mac_set_key,
4305         .update_tkip_key = iwl4965_mac_update_tkip_key,
4306         .get_stats = iwl4965_mac_get_stats,
4307         .get_tx_stats = iwl4965_mac_get_tx_stats,
4308         .conf_tx = iwl4965_mac_conf_tx,
4309         .get_tsf = iwl4965_mac_get_tsf,
4310         .reset_tsf = iwl4965_mac_reset_tsf,
4311         .beacon_update = iwl4965_mac_beacon_update,
4312         .bss_info_changed = iwl4965_bss_info_changed,
4313         .ampdu_action = iwl4965_mac_ampdu_action,
4314         .hw_scan = iwl4965_mac_hw_scan
4315 };
4316
4317 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4318 {
4319         int err = 0;
4320         struct iwl_priv *priv;
4321         struct ieee80211_hw *hw;
4322         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4323         unsigned long flags;
4324         DECLARE_MAC_BUF(mac);
4325
4326         /************************
4327          * 1. Allocating HW data
4328          ************************/
4329
4330         /* Disabling hardware scan means that mac80211 will perform scans
4331          * "the hard way", rather than using device's scan. */
4332         if (cfg->mod_params->disable_hw_scan) {
4333                 if (cfg->mod_params->debug & IWL_DL_INFO)
4334                         dev_printk(KERN_DEBUG, &(pdev->dev),
4335                                    "Disabling hw_scan\n");
4336                 iwl4965_hw_ops.hw_scan = NULL;
4337         }
4338
4339         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4340         if (!hw) {
4341                 err = -ENOMEM;
4342                 goto out;
4343         }
4344         priv = hw->priv;
4345         /* At this point both hw and priv are allocated. */
4346
4347         SET_IEEE80211_DEV(hw, &pdev->dev);
4348
4349         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4350         priv->cfg = cfg;
4351         priv->pci_dev = pdev;
4352
4353 #ifdef CONFIG_IWLWIFI_DEBUG
4354         priv->debug_level = priv->cfg->mod_params->debug;
4355         atomic_set(&priv->restrict_refcnt, 0);
4356 #endif
4357
4358         /**************************
4359          * 2. Initializing PCI bus
4360          **************************/
4361         if (pci_enable_device(pdev)) {
4362                 err = -ENODEV;
4363                 goto out_ieee80211_free_hw;
4364         }
4365
4366         pci_set_master(pdev);
4367
4368         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4369         if (!err)
4370                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4371         if (err) {
4372                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4373                 if (!err)
4374                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4375                 /* both attempts failed: */
4376                 if (err) {
4377                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4378                                 DRV_NAME);
4379                         goto out_pci_disable_device;
4380                 }
4381         }
4382
4383         err = pci_request_regions(pdev, DRV_NAME);
4384         if (err)
4385                 goto out_pci_disable_device;
4386
4387         pci_set_drvdata(pdev, priv);
4388
4389         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4390          * PCI Tx retries from interfering with C3 CPU state */
4391         pci_write_config_byte(pdev, 0x41, 0x00);
4392
4393         /***********************
4394          * 3. Read REV register
4395          ***********************/
4396         priv->hw_base = pci_iomap(pdev, 0, 0);
4397         if (!priv->hw_base) {
4398                 err = -ENODEV;
4399                 goto out_pci_release_regions;
4400         }
4401
4402         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4403                 (unsigned long long) pci_resource_len(pdev, 0));
4404         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4405
4406         iwl_hw_detect(priv);
4407         printk(KERN_INFO DRV_NAME
4408                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4409                 priv->cfg->name, priv->hw_rev);
4410
4411         /* amp init */
4412         err = priv->cfg->ops->lib->apm_ops.init(priv);
4413         if (err < 0) {
4414                 IWL_DEBUG_INFO("Failed to init APMG\n");
4415                 goto out_iounmap;
4416         }
4417         /*****************
4418          * 4. Read EEPROM
4419          *****************/
4420         /* Read the EEPROM */
4421         err = iwl_eeprom_init(priv);
4422         if (err) {
4423                 IWL_ERROR("Unable to init EEPROM\n");
4424                 goto out_iounmap;
4425         }
4426         err = iwl_eeprom_check_version(priv);
4427         if (err)
4428                 goto out_iounmap;
4429
4430         /* extract MAC Address */
4431         iwl_eeprom_get_mac(priv, priv->mac_addr);
4432         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4433         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4434
4435         /************************
4436          * 5. Setup HW constants
4437          ************************/
4438         /* Device-specific setup */
4439         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4440                 IWL_ERROR("failed to set hw parameters\n");
4441                 goto out_free_eeprom;
4442         }
4443
4444         /*******************
4445          * 6. Setup priv
4446          *******************/
4447
4448         err = iwl_init_drv(priv);
4449         if (err)
4450                 goto out_free_eeprom;
4451         /* At this point both hw and priv are initialized. */
4452
4453         /**********************************
4454          * 7. Initialize module parameters
4455          **********************************/
4456
4457         /* Disable radio (SW RF KILL) via parameter when loading driver */
4458         if (priv->cfg->mod_params->disable) {
4459                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4460                 IWL_DEBUG_INFO("Radio disabled.\n");
4461         }
4462
4463         /********************
4464          * 8. Setup services
4465          ********************/
4466         spin_lock_irqsave(&priv->lock, flags);
4467         iwl4965_disable_interrupts(priv);
4468         spin_unlock_irqrestore(&priv->lock, flags);
4469
4470         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4471         if (err) {
4472                 IWL_ERROR("failed to create sysfs device attributes\n");
4473                 goto out_uninit_drv;
4474         }
4475
4476
4477         iwl_setup_deferred_work(priv);
4478         iwl4965_setup_rx_handlers(priv);
4479
4480         /********************
4481          * 9. Conclude
4482          ********************/
4483         pci_save_state(pdev);
4484         pci_disable_device(pdev);
4485
4486         /**********************************
4487          * 10. Setup and register mac80211
4488          **********************************/
4489
4490         err = iwl_setup_mac(priv);
4491         if (err)
4492                 goto out_remove_sysfs;
4493
4494         err = iwl_dbgfs_register(priv, DRV_NAME);
4495         if (err)
4496                 IWL_ERROR("failed to create debugfs files\n");
4497
4498         /* notify iwlcore to init */
4499         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
4500         return 0;
4501
4502  out_remove_sysfs:
4503         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4504  out_uninit_drv:
4505         iwl_uninit_drv(priv);
4506  out_free_eeprom:
4507         iwl_eeprom_free(priv);
4508  out_iounmap:
4509         pci_iounmap(pdev, priv->hw_base);
4510  out_pci_release_regions:
4511         pci_release_regions(pdev);
4512         pci_set_drvdata(pdev, NULL);
4513  out_pci_disable_device:
4514         pci_disable_device(pdev);
4515  out_ieee80211_free_hw:
4516         ieee80211_free_hw(priv->hw);
4517  out:
4518         return err;
4519 }
4520
4521 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4522 {
4523         struct iwl_priv *priv = pci_get_drvdata(pdev);
4524         struct list_head *p, *q;
4525         int i;
4526         unsigned long flags;
4527
4528         if (!priv)
4529                 return;
4530
4531         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4532
4533         iwl_dbgfs_unregister(priv);
4534         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4535
4536         if (priv->mac80211_registered) {
4537                 ieee80211_unregister_hw(priv->hw);
4538                 priv->mac80211_registered = 0;
4539         }
4540
4541         set_bit(STATUS_EXIT_PENDING, &priv->status);
4542
4543         iwl4965_down(priv);
4544
4545         /* make sure we flush any pending irq or
4546          * tasklet for the driver
4547          */
4548         spin_lock_irqsave(&priv->lock, flags);
4549         iwl4965_disable_interrupts(priv);
4550         spin_unlock_irqrestore(&priv->lock, flags);
4551
4552         iwl_synchronize_irq(priv);
4553
4554         /* Free MAC hash list for ADHOC */
4555         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
4556                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
4557                         list_del(p);
4558                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
4559                 }
4560         }
4561
4562         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
4563
4564         iwl4965_dealloc_ucode_pci(priv);
4565
4566         if (priv->rxq.bd)
4567                 iwl_rx_queue_free(priv, &priv->rxq);
4568         iwl_hw_txq_ctx_free(priv);
4569
4570         iwlcore_clear_stations_table(priv);
4571         iwl_eeprom_free(priv);
4572
4573
4574         /*netif_stop_queue(dev); */
4575         flush_workqueue(priv->workqueue);
4576
4577         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4578          * priv->workqueue... so we can't take down the workqueue
4579          * until now... */
4580         destroy_workqueue(priv->workqueue);
4581         priv->workqueue = NULL;
4582
4583         pci_iounmap(pdev, priv->hw_base);
4584         pci_release_regions(pdev);
4585         pci_disable_device(pdev);
4586         pci_set_drvdata(pdev, NULL);
4587
4588         iwl_uninit_drv(priv);
4589
4590         if (priv->ibss_beacon)
4591                 dev_kfree_skb(priv->ibss_beacon);
4592
4593         ieee80211_free_hw(priv->hw);
4594 }
4595
4596 #ifdef CONFIG_PM
4597
4598 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4599 {
4600         struct iwl_priv *priv = pci_get_drvdata(pdev);
4601
4602         if (priv->is_open) {
4603                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4604                 iwl4965_mac_stop(priv->hw);
4605                 priv->is_open = 1;
4606         }
4607
4608         pci_set_power_state(pdev, PCI_D3hot);
4609
4610         return 0;
4611 }
4612
4613 static int iwl4965_pci_resume(struct pci_dev *pdev)
4614 {
4615         struct iwl_priv *priv = pci_get_drvdata(pdev);
4616
4617         pci_set_power_state(pdev, PCI_D0);
4618
4619         if (priv->is_open)
4620                 iwl4965_mac_start(priv->hw);
4621
4622         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4623         return 0;
4624 }
4625
4626 #endif /* CONFIG_PM */
4627
4628 /*****************************************************************************
4629  *
4630  * driver and module entry point
4631  *
4632  *****************************************************************************/
4633
4634 /* Hardware specific file defines the PCI IDs table for that hardware module */
4635 static struct pci_device_id iwl_hw_card_ids[] = {
4636         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4637         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4638 #ifdef CONFIG_IWL5000
4639         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4640         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4641         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4642 #endif /* CONFIG_IWL5000 */
4643         {0}
4644 };
4645 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4646
4647 static struct pci_driver iwl_driver = {
4648         .name = DRV_NAME,
4649         .id_table = iwl_hw_card_ids,
4650         .probe = iwl4965_pci_probe,
4651         .remove = __devexit_p(iwl4965_pci_remove),
4652 #ifdef CONFIG_PM
4653         .suspend = iwl4965_pci_suspend,
4654         .resume = iwl4965_pci_resume,
4655 #endif
4656 };
4657
4658 static int __init iwl4965_init(void)
4659 {
4660
4661         int ret;
4662         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4663         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4664
4665         ret = iwl4965_rate_control_register();
4666         if (ret) {
4667                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4668                 return ret;
4669         }
4670
4671         ret = pci_register_driver(&iwl_driver);
4672         if (ret) {
4673                 IWL_ERROR("Unable to initialize PCI module\n");
4674                 goto error_register;
4675         }
4676
4677         return ret;
4678
4679 error_register:
4680         iwl4965_rate_control_unregister();
4681         return ret;
4682 }
4683
4684 static void __exit iwl4965_exit(void)
4685 {
4686         pci_unregister_driver(&iwl_driver);
4687         iwl4965_rate_control_unregister();
4688 }
4689
4690 module_exit(iwl4965_exit);
4691 module_init(iwl4965_init);