drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 211             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 212                 return 1;
 213
 214         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 215          * be updated with the RXON_ASSOC command -- however only some
 216          * flag transitions are allowed using RXON_ASSOC */
 217
 218         /* Check if we are not switching bands */
 219         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 220             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 221                 return 1;
 222
 223         /* Check if we are switching association toggle */
 224         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 225                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 226                 return 1;
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * iwl4965_commit_rxon - commit staging_rxon to hardware
 233  *
 234  * The RXON command in staging_rxon is committed to the hardware and
 235  * the active_rxon structure is updated with the new data.  This
 236  * function correctly transitions out of the RXON_ASSOC_MSK state if
 237  * a HW tune is required based on the RXON structure changes.
 238  */
 239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 240 {
 241         /* cast away the const for active_rxon in this function */
 242         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 243         DECLARE_MAC_BUF(mac);
 244         int ret;
 245         bool new_assoc =
 246                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 247
 248         if (!iwl_is_alive(priv))
 249                 return -EBUSY;
 250
 251         /* always get timestamp with Rx frame */
 252         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 253
 254         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 255         if (ret) {
 256                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 257                 return -EINVAL;
 258         }
 259
 260         /* If we don't need to send a full RXON, we can use
 261          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 262          * and other flags for the current radio configuration. */
 263         if (!iwl4965_full_rxon_required(priv)) {
 264                 ret = iwl_send_rxon_assoc(priv);
 265                 if (ret) {
 266                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 267                         return ret;
 268                 }
 269
 270                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 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) && new_assoc) {
 282                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 283                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 284
 285                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 286                                       sizeof(struct iwl_rxon_cmd),
 287                                       &priv->active_rxon);
 288
 289                 /* If the mask clearing failed then we set
 290                  * active_rxon back to what it was previously */
 291                 if (ret) {
 292                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 293                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 294                         return ret;
 295                 }
 296         }
 297
 298         IWL_DEBUG_INFO("Sending RXON\n"
 299                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 300                        "* channel = %d\n"
 301                        "* bssid = %s\n",
 302                        (new_assoc ? "" : "out"),
 303                        le16_to_cpu(priv->staging_rxon.channel),
 304                        print_mac(mac, priv->staging_rxon.bssid_addr));
 305
 306         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 307
 308         /* Apply the new configuration
 309          * RXON unassoc clears the station table in uCode, send it before
 310          * we add the bcast station. If assoc bit is set, we will send RXON
 311          * after having added the bcast and bssid station.
 312          */
 313         if (!new_assoc) {
 314                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 315                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 316                 if (ret) {
 317                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 318                         return ret;
 319                 }
 320                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 321         }
 322
 323         iwl_clear_stations_table(priv);
 324
 325         if (!priv->error_recovering)
 326                 priv->start_calib = 0;
 327
 328         iwl_init_sensitivity(priv);
 329
 330         /* If we issue a new RXON command which required a tune then we must
 331          * send a new TXPOWER command or we won't be able to Tx any frames */
 332         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 333         if (ret) {
 334                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 335                 return ret;
 336         }
 337
 338         /* Add the broadcast address so we can send broadcast frames */
 339         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 340                                                 IWL_INVALID_STATION) {
 341                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 342                 return -EIO;
 343         }
 344
 345         /* If we have set the ASSOC_MSK and we are in BSS mode then
 346          * add the IWL_AP_ID to the station rate table */
 347         if (new_assoc && (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 348                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 349                     == IWL_INVALID_STATION) {
 350                         IWL_ERROR("Error adding AP address for transmit.\n");
 351                         return -EIO;
 352                 }
 353                 priv->assoc_station_added = 1;
 354                 if (priv->default_wep_key &&
 355                     iwl_send_static_wepkey_cmd(priv, 0))
 356                         IWL_ERROR("Could not send WEP static key.\n");
 357
 358                 /* Apply the new configuration
 359                  * RXON assoc doesn't clear the station table in uCode,
 360                  */
 361                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 362                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 363                 if (ret) {
 364                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 365                         return ret;
 366                 }
 367                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 368         }
 369
 370         return 0;
 371 }
 372
 373 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 374 {
 375
 376         iwl_set_rxon_chain(priv);
 377         iwl4965_commit_rxon(priv);
 378 }
 379
 380 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 381 {
 382         struct iwl4965_bt_cmd bt_cmd = {
 383                 .flags = 3,
 384                 .lead_time = 0xAA,
 385                 .max_kill = 1,
 386                 .kill_ack_mask = 0,
 387                 .kill_cts_mask = 0,
 388         };
 389
 390         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 391                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 392 }
 393
 394 static void iwl_clear_free_frames(struct iwl_priv *priv)
 395 {
 396         struct list_head *element;
 397
 398         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 399                        priv->frames_count);
 400
 401         while (!list_empty(&priv->free_frames)) {
 402                 element = priv->free_frames.next;
 403                 list_del(element);
 404                 kfree(list_entry(element, struct iwl_frame, list));
 405                 priv->frames_count--;
 406         }
 407
 408         if (priv->frames_count) {
 409                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 410                             priv->frames_count);
 411                 priv->frames_count = 0;
 412         }
 413 }
 414
 415 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 416 {
 417         struct iwl_frame *frame;
 418         struct list_head *element;
 419         if (list_empty(&priv->free_frames)) {
 420                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 421                 if (!frame) {
 422                         IWL_ERROR("Could not allocate frame!\n");
 423                         return NULL;
 424                 }
 425
 426                 priv->frames_count++;
 427                 return frame;
 428         }
 429
 430         element = priv->free_frames.next;
 431         list_del(element);
 432         return list_entry(element, struct iwl_frame, list);
 433 }
 434
 435 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 436 {
 437         memset(frame, 0, sizeof(*frame));
 438         list_add(&frame->list, &priv->free_frames);
 439 }
 440
 441 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 442                                 struct ieee80211_hdr *hdr,
 443                                 const u8 *dest, int left)
 444 {
 445
 446         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 447             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 448              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 449                 return 0;
 450
 451         if (priv->ibss_beacon->len > left)
 452                 return 0;
 453
 454         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 455
 456         return priv->ibss_beacon->len;
 457 }
 458
 459 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 460 {
 461         int i;
 462         int rate_mask;
 463
 464         /* Set rate mask*/
 465         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 466                 rate_mask = priv->active_rate_basic & 0xF;
 467         else
 468                 rate_mask = priv->active_rate_basic & 0xFF0;
 469
 470         /* Find lowest valid rate */
 471         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 472                                         i = iwl_rates[i].next_ieee) {
 473                 if (rate_mask & (1 << i))
 474                         return iwl_rates[i].plcp;
 475         }
 476
 477         /* No valid rate was found. Assign the lowest one */
 478         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 479                 return IWL_RATE_1M_PLCP;
 480         else
 481                 return IWL_RATE_6M_PLCP;
 482 }
 483
 484 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 485 {
 486         struct iwl_frame *frame;
 487         unsigned int frame_size;
 488         int rc;
 489         u8 rate;
 490
 491         frame = iwl_get_free_frame(priv);
 492
 493         if (!frame) {
 494                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 495                           "command.\n");
 496                 return -ENOMEM;
 497         }
 498
 499         rate = iwl4965_rate_get_lowest_plcp(priv);
 500
 501         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 502
 503         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 504                               &frame->u.cmd[0]);
 505
 506         iwl_free_frame(priv, frame);
 507
 508         return rc;
 509 }
 510
 511 /******************************************************************************
 512  *
 513  * Misc. internal state and helper functions
 514  *
 515  ******************************************************************************/
 516
 517 static void iwl4965_ht_conf(struct iwl_priv *priv,
 518                             struct ieee80211_bss_conf *bss_conf)
 519 {
 520         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 521         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 522         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 523
 524         IWL_DEBUG_MAC80211("enter: \n");
 525
 526         iwl_conf->is_ht = bss_conf->assoc_ht;
 527
 528         if (!iwl_conf->is_ht)
 529                 return;
 530
 531         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 532
 533         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 534                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 535         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 536                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 537
 538         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 539         iwl_conf->max_amsdu_size =
 540                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 541
 542         iwl_conf->supported_chan_width =
 543                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 544         iwl_conf->extension_chan_offset =
 545                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 546         /* If no above or below channel supplied disable FAT channel */
 547         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 548             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 549                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 550                 iwl_conf->supported_chan_width = 0;
 551         }
 552
 553         iwl_conf->tx_mimo_ps_mode =
 554                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 555         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 556
 557         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 558         iwl_conf->tx_chan_width =
 559                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 560         iwl_conf->ht_protection =
 561                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 562         iwl_conf->non_GF_STA_present =
 563                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 564
 565         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 566         IWL_DEBUG_MAC80211("leave\n");
 567 }
 568
 569 /*
 570  * QoS  support
 571 */
 572 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 573                                        struct iwl4965_qosparam_cmd *qos)
 574 {
 575
 576         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 577                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 578 }
 579
 580 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 581 {
 582         unsigned long flags;
 583
 584         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 585                 return;
 586
 587         if (!priv->qos_data.qos_enable)
 588                 return;
 589
 590         spin_lock_irqsave(&priv->lock, flags);
 591         priv->qos_data.def_qos_parm.qos_flags = 0;
 592
 593         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 594             !priv->qos_data.qos_cap.q_AP.txop_request)
 595                 priv->qos_data.def_qos_parm.qos_flags |=
 596                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 597         if (priv->qos_data.qos_active)
 598                 priv->qos_data.def_qos_parm.qos_flags |=
 599                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 600
 601         if (priv->current_ht_config.is_ht)
 602                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 603
 604         spin_unlock_irqrestore(&priv->lock, flags);
 605
 606         if (force || iwl_is_associated(priv)) {
 607                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 608                                 priv->qos_data.qos_active,
 609                                 priv->qos_data.def_qos_parm.qos_flags);
 610
 611                 iwl4965_send_qos_params_command(priv,
 612                                 &(priv->qos_data.def_qos_parm));
 613         }
 614 }
 615
 616 #define MAX_UCODE_BEACON_INTERVAL       4096
 617 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 618
 619 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 620 {
 621         u16 new_val = 0;
 622         u16 beacon_factor = 0;
 623
 624         beacon_factor =
 625             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 626                 / MAX_UCODE_BEACON_INTERVAL;
 627         new_val = beacon_val / beacon_factor;
 628
 629         return cpu_to_le16(new_val);
 630 }
 631
 632 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 633 {
 634         u64 interval_tm_unit;
 635         u64 tsf, result;
 636         unsigned long flags;
 637         struct ieee80211_conf *conf = NULL;
 638         u16 beacon_int = 0;
 639
 640         conf = ieee80211_get_hw_conf(priv->hw);
 641
 642         spin_lock_irqsave(&priv->lock, flags);
 643         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 644         priv->rxon_timing.timestamp.dw[0] =
 645                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 646
 647         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 648
 649         tsf = priv->timestamp;
 650
 651         beacon_int = priv->beacon_int;
 652         spin_unlock_irqrestore(&priv->lock, flags);
 653
 654         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 655                 if (beacon_int == 0) {
 656                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 657                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 658                 } else {
 659                         priv->rxon_timing.beacon_interval =
 660                                 cpu_to_le16(beacon_int);
 661                         priv->rxon_timing.beacon_interval =
 662                             iwl4965_adjust_beacon_interval(
 663                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 664                 }
 665
 666                 priv->rxon_timing.atim_window = 0;
 667         } else {
 668                 priv->rxon_timing.beacon_interval =
 669                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 670                 /* TODO: we need to get atim_window from upper stack
 671                  * for now we set to 0 */
 672                 priv->rxon_timing.atim_window = 0;
 673         }
 674
 675         interval_tm_unit =
 676                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 677         result = do_div(tsf, interval_tm_unit);
 678         priv->rxon_timing.beacon_init_val =
 679             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 680
 681         IWL_DEBUG_ASSOC
 682             ("beacon interval %d beacon timer %d beacon tim %d\n",
 683                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 684                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 685                 le16_to_cpu(priv->rxon_timing.atim_window));
 686 }
 687
 688 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 689                                    enum ieee80211_band band)
 690 {
 691         if (band == IEEE80211_BAND_5GHZ) {
 692                 priv->staging_rxon.flags &=
 693                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 694                       | RXON_FLG_CCK_MSK);
 695                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 696         } else {
 697                 /* Copied from iwl4965_post_associate() */
 698                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 699                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 700                 else
 701                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 702
 703                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 704                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 705
 706                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 707                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 708                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 709         }
 710 }
 711
 712 /*
 713  * initialize rxon structure with default values from eeprom
 714  */
 715 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 716 {
 717         const struct iwl_channel_info *ch_info;
 718
 719         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 720
 721         switch (priv->iw_mode) {
 722         case IEEE80211_IF_TYPE_AP:
 723                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 724                 break;
 725
 726         case IEEE80211_IF_TYPE_STA:
 727                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 728                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 729                 break;
 730
 731         case IEEE80211_IF_TYPE_IBSS:
 732                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 733                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 734                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 735                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 736                 break;
 737
 738         case IEEE80211_IF_TYPE_MNTR:
 739                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 740                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 741                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 742                 break;
 743         default:
 744                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 745                 break;
 746         }
 747
 748 #if 0
 749         /* TODO:  Figure out when short_preamble would be set and cache from
 750          * that */
 751         if (!hw_to_local(priv->hw)->short_preamble)
 752                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 753         else
 754                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 755 #endif
 756
 757         ch_info = iwl_get_channel_info(priv, priv->band,
 758                                        le16_to_cpu(priv->staging_rxon.channel));
 759
 760         if (!ch_info)
 761                 ch_info = &priv->channel_info[0];
 762
 763         /*
 764          * in some case A channels are all non IBSS
 765          * in this case force B/G channel
 766          */
 767         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 768             !(is_channel_ibss(ch_info)))
 769                 ch_info = &priv->channel_info[0];
 770
 771         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 772         priv->band = ch_info->band;
 773
 774         iwl_set_flags_for_band(priv, priv->band);
 775
 776         priv->staging_rxon.ofdm_basic_rates =
 777             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 778         priv->staging_rxon.cck_basic_rates =
 779             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 780
 781         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 782                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 783         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 784         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 785         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 786         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 787         iwl_set_rxon_chain(priv);
 788 }
 789
 790 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 791 {
 792         priv->iw_mode = mode;
 793
 794         /* init channel/phymode to values given at driver init */
 795         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 796
 797         iwl4965_connection_init_rx_config(priv);
 798         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 799
 800         iwl_clear_stations_table(priv);
 801
 802         /* dont commit rxon if rf-kill is on*/
 803         if (!iwl_is_ready_rf(priv))
 804                 return -EAGAIN;
 805
 806         cancel_delayed_work(&priv->scan_check);
 807         if (iwl_scan_cancel_timeout(priv, 100)) {
 808                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 809                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 810                 return -EAGAIN;
 811         }
 812
 813         iwl4965_commit_rxon(priv);
 814
 815         return 0;
 816 }
 817
 818 static void iwl4965_set_rate(struct iwl_priv *priv)
 819 {
 820         const struct ieee80211_supported_band *hw = NULL;
 821         struct ieee80211_rate *rate;
 822         int i;
 823
 824         hw = iwl_get_hw_mode(priv, priv->band);
 825         if (!hw) {
 826                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 827                 return;
 828         }
 829
 830         priv->active_rate = 0;
 831         priv->active_rate_basic = 0;
 832
 833         for (i = 0; i < hw->n_bitrates; i++) {
 834                 rate = &(hw->bitrates[i]);
 835                 if (rate->hw_value < IWL_RATE_COUNT)
 836                         priv->active_rate |= (1 << rate->hw_value);
 837         }
 838
 839         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 840                        priv->active_rate, priv->active_rate_basic);
 841
 842         /*
 843          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 844          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 845          * OFDM
 846          */
 847         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 848                 priv->staging_rxon.cck_basic_rates =
 849                     ((priv->active_rate_basic &
 850                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 851         else
 852                 priv->staging_rxon.cck_basic_rates =
 853                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 854
 855         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 856                 priv->staging_rxon.ofdm_basic_rates =
 857                     ((priv->active_rate_basic &
 858                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 859                       IWL_FIRST_OFDM_RATE) & 0xFF;
 860         else
 861                 priv->staging_rxon.ofdm_basic_rates =
 862                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 863 }
 864
 865 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 866
 867 #include "iwl-spectrum.h"
 868
 869 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 870 #define BEACON_TIME_MASK_HIGH   0xFF000000
 871 #define TIME_UNIT               1024
 872
 873 /*
 874  * extended beacon time format
 875  * time in usec will be changed into a 32-bit value in 8:24 format
 876  * the high 1 byte is the beacon counts
 877  * the lower 3 bytes is the time in usec within one beacon interval
 878  */
 879
 880 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 881 {
 882         u32 quot;
 883         u32 rem;
 884         u32 interval = beacon_interval * 1024;
 885
 886         if (!interval || !usec)
 887                 return 0;
 888
 889         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 890         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 891
 892         return (quot << 24) + rem;
 893 }
 894
 895 /* base is usually what we get from ucode with each received frame,
 896  * the same as HW timer counter counting down
 897  */
 898
 899 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 900 {
 901         u32 base_low = base & BEACON_TIME_MASK_LOW;
 902         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 903         u32 interval = beacon_interval * TIME_UNIT;
 904         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 905             (addon & BEACON_TIME_MASK_HIGH);
 906
 907         if (base_low > addon_low)
 908                 res += base_low - addon_low;
 909         else if (base_low < addon_low) {
 910                 res += interval + base_low - addon_low;
 911                 res += (1 << 24);
 912         } else
 913                 res += (1 << 24);
 914
 915         return cpu_to_le32(res);
 916 }
 917
 918 static int iwl4965_get_measurement(struct iwl_priv *priv,
 919                                struct ieee80211_measurement_params *params,
 920                                u8 type)
 921 {
 922         struct iwl4965_spectrum_cmd spectrum;
 923         struct iwl_rx_packet *res;
 924         struct iwl_host_cmd cmd = {
 925                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 926                 .data = (void *)&spectrum,
 927                 .meta.flags = CMD_WANT_SKB,
 928         };
 929         u32 add_time = le64_to_cpu(params->start_time);
 930         int rc;
 931         int spectrum_resp_status;
 932         int duration = le16_to_cpu(params->duration);
 933
 934         if (iwl_is_associated(priv))
 935                 add_time =
 936                     iwl4965_usecs_to_beacons(
 937                         le64_to_cpu(params->start_time) - priv->last_tsf,
 938                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 939
 940         memset(&spectrum, 0, sizeof(spectrum));
 941
 942         spectrum.channel_count = cpu_to_le16(1);
 943         spectrum.flags =
 944             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 945         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 946         cmd.len = sizeof(spectrum);
 947         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 948
 949         if (iwl_is_associated(priv))
 950                 spectrum.start_time =
 951                     iwl4965_add_beacon_time(priv->last_beacon_time,
 952                                 add_time,
 953                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 954         else
 955                 spectrum.start_time = 0;
 956
 957         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 958         spectrum.channels[0].channel = params->channel;
 959         spectrum.channels[0].type = type;
 960         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 961                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 962                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 963
 964         rc = iwl_send_cmd_sync(priv, &cmd);
 965         if (rc)
 966                 return rc;
 967
 968         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 969         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 970                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 971                 rc = -EIO;
 972         }
 973
 974         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 975         switch (spectrum_resp_status) {
 976         case 0:         /* Command will be handled */
 977                 if (res->u.spectrum.id != 0xff) {
 978                         IWL_DEBUG_INFO
 979                             ("Replaced existing measurement: %d\n",
 980                              res->u.spectrum.id);
 981                         priv->measurement_status &= ~MEASUREMENT_READY;
 982                 }
 983                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 984                 rc = 0;
 985                 break;
 986
 987         case 1:         /* Command will not be handled */
 988                 rc = -EAGAIN;
 989                 break;
 990         }
 991
 992         dev_kfree_skb_any(cmd.meta.u.skb);
 993
 994         return rc;
 995 }
 996 #endif
 997
 998 /******************************************************************************
 999  *
1000  * Generic RX handler implementations
1001  *
1002  ******************************************************************************/
1003 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1004                                 struct iwl_rx_mem_buffer *rxb)
1005 {
1006         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1007         struct iwl_alive_resp *palive;
1008         struct delayed_work *pwork;
1009
1010         palive = &pkt->u.alive_frame;
1011
1012         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1013                        "0x%01X 0x%01X\n",
1014                        palive->is_valid, palive->ver_type,
1015                        palive->ver_subtype);
1016
1017         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1018                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1019                 memcpy(&priv->card_alive_init,
1020                        &pkt->u.alive_frame,
1021                        sizeof(struct iwl_init_alive_resp));
1022                 pwork = &priv->init_alive_start;
1023         } else {
1024                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1025                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1026                        sizeof(struct iwl_alive_resp));
1027                 pwork = &priv->alive_start;
1028         }
1029
1030         /* We delay the ALIVE response by 5ms to
1031          * give the HW RF Kill time to activate... */
1032         if (palive->is_valid == UCODE_VALID_OK)
1033                 queue_delayed_work(priv->workqueue, pwork,
1034                                    msecs_to_jiffies(5));
1035         else
1036                 IWL_WARNING("uCode did not respond OK.\n");
1037 }
1038
1039 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1040                                    struct iwl_rx_mem_buffer *rxb)
1041 {
1042         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1043
1044         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1045                 "seq 0x%04X ser 0x%08X\n",
1046                 le32_to_cpu(pkt->u.err_resp.error_type),
1047                 get_cmd_string(pkt->u.err_resp.cmd_id),
1048                 pkt->u.err_resp.cmd_id,
1049                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1050                 le32_to_cpu(pkt->u.err_resp.error_info));
1051 }
1052
1053 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1054
1055 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1056 {
1057         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1058         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1059         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1060         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1061                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1062         rxon->channel = csa->channel;
1063         priv->staging_rxon.channel = csa->channel;
1064 }
1065
1066 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1067                                           struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1070         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1072
1073         if (!report->state) {
1074                 IWL_DEBUG(IWL_DL_11H,
1075                         "Spectrum Measure Notification: Start\n");
1076                 return;
1077         }
1078
1079         memcpy(&priv->measure_report, report, sizeof(*report));
1080         priv->measurement_status |= MEASUREMENT_READY;
1081 #endif
1082 }
1083
1084 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1085                                       struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1090         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1091                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1096                                              struct iwl_rx_mem_buffer *rxb)
1097 {
1098         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1099         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1100                         "notification for %s:\n",
1101                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1102         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1103 }
1104
1105 static void iwl4965_bg_beacon_update(struct work_struct *work)
1106 {
1107         struct iwl_priv *priv =
1108                 container_of(work, struct iwl_priv, beacon_update);
1109         struct sk_buff *beacon;
1110
1111         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1112         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1113
1114         if (!beacon) {
1115                 IWL_ERROR("update beacon failed\n");
1116                 return;
1117         }
1118
1119         mutex_lock(&priv->mutex);
1120         /* new beacon skb is allocated every time; dispose previous.*/
1121         if (priv->ibss_beacon)
1122                 dev_kfree_skb(priv->ibss_beacon);
1123
1124         priv->ibss_beacon = beacon;
1125         mutex_unlock(&priv->mutex);
1126
1127         iwl4965_send_beacon_cmd(priv);
1128 }
1129
1130 /**
1131  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1132  *
1133  * This callback is provided in order to send a statistics request.
1134  *
1135  * This timer function is continually reset to execute within
1136  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1137  * was received.  We need to ensure we receive the statistics in order
1138  * to update the temperature used for calibrating the TXPOWER.
1139  */
1140 static void iwl4965_bg_statistics_periodic(unsigned long data)
1141 {
1142         struct iwl_priv *priv = (struct iwl_priv *)data;
1143
1144         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1145                 return;
1146
1147         iwl_send_statistics_request(priv, CMD_ASYNC);
1148 }
1149
1150 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1151                                 struct iwl_rx_mem_buffer *rxb)
1152 {
1153 #ifdef CONFIG_IWLWIFI_DEBUG
1154         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1155         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1156         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1157
1158         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1159                 "tsf %d %d rate %d\n",
1160                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1161                 beacon->beacon_notify_hdr.failure_frame,
1162                 le32_to_cpu(beacon->ibss_mgr_status),
1163                 le32_to_cpu(beacon->high_tsf),
1164                 le32_to_cpu(beacon->low_tsf), rate);
1165 #endif
1166
1167         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1168             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1169                 queue_work(priv->workqueue, &priv->beacon_update);
1170 }
1171
1172 /* Handle notification from uCode that card's power state is changing
1173  * due to software, hardware, or critical temperature RFKILL */
1174 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1175                                     struct iwl_rx_mem_buffer *rxb)
1176 {
1177         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1179         unsigned long status = priv->status;
1180
1181         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1182                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1183                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1184
1185         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1186                      RF_CARD_DISABLED)) {
1187
1188                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1189                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1190
1191                 if (!iwl_grab_nic_access(priv)) {
1192                         iwl_write_direct32(
1193                                 priv, HBUS_TARG_MBX_C,
1194                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1195
1196                         iwl_release_nic_access(priv);
1197                 }
1198
1199                 if (!(flags & RXON_CARD_DISABLED)) {
1200                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1201                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1202                         if (!iwl_grab_nic_access(priv)) {
1203                                 iwl_write_direct32(
1204                                         priv, HBUS_TARG_MBX_C,
1205                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207                                 iwl_release_nic_access(priv);
1208                         }
1209                 }
1210
1211                 if (flags & RF_CARD_DISABLED) {
1212                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1213                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1214                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1215                         if (!iwl_grab_nic_access(priv))
1216                                 iwl_release_nic_access(priv);
1217                 }
1218         }
1219
1220         if (flags & HW_CARD_DISABLED)
1221                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222         else
1223                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224
1225
1226         if (flags & SW_CARD_DISABLED)
1227                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1228         else
1229                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1230
1231         if (!(flags & RXON_CARD_DISABLED))
1232                 iwl_scan_cancel(priv);
1233
1234         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1235              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1236             (test_bit(STATUS_RF_KILL_SW, &status) !=
1237              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1238                 queue_work(priv->workqueue, &priv->rf_kill);
1239         else
1240                 wake_up_interruptible(&priv->wait_command_queue);
1241 }
1242
1243 /**
1244  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1245  *
1246  * Setup the RX handlers for each of the reply types sent from the uCode
1247  * to the host.
1248  *
1249  * This function chains into the hardware specific files for them to setup
1250  * any hardware specific handlers as well.
1251  */
1252 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1253 {
1254         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1255         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1256         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1257         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1258             iwl4965_rx_spectrum_measure_notif;
1259         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1260         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1261             iwl4965_rx_pm_debug_statistics_notif;
1262         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1263
1264         /*
1265          * The same handler is used for both the REPLY to a discrete
1266          * statistics request from the host as well as for the periodic
1267          * statistics notifications (after received beacons) from the uCode.
1268          */
1269         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1270         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1271
1272         iwl_setup_rx_scan_handlers(priv);
1273
1274         /* status change handler */
1275         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1276
1277         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1278             iwl_rx_missed_beacon_notif;
1279         /* Rx handlers */
1280         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1281         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1282         /* Set up hardware specific Rx handlers */
1283         priv->cfg->ops->lib->rx_handler_setup(priv);
1284 }
1285
1286 /*
1287  * this should be called while priv->lock is locked
1288 */
1289 static void __iwl_rx_replenish(struct iwl_priv *priv)
1290 {
1291         iwl_rx_allocate(priv);
1292         iwl_rx_queue_restock(priv);
1293 }
1294
1295
1296 /**
1297  * iwl_rx_handle - Main entry function for receiving responses from uCode
1298  *
1299  * Uses the priv->rx_handlers callback function array to invoke
1300  * the appropriate handlers, including command responses,
1301  * frame-received notifications, and other notifications.
1302  */
1303 void iwl_rx_handle(struct iwl_priv *priv)
1304 {
1305         struct iwl_rx_mem_buffer *rxb;
1306         struct iwl_rx_packet *pkt;
1307         struct iwl_rx_queue *rxq = &priv->rxq;
1308         u32 r, i;
1309         int reclaim;
1310         unsigned long flags;
1311         u8 fill_rx = 0;
1312         u32 count = 8;
1313
1314         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1315          * buffer that the driver may process (last buffer filled by ucode). */
1316         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1317         i = rxq->read;
1318
1319         /* Rx interrupt, but nothing sent from uCode */
1320         if (i == r)
1321                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1322
1323         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1324                 fill_rx = 1;
1325
1326         while (i != r) {
1327                 rxb = rxq->queue[i];
1328
1329                 /* If an RXB doesn't have a Rx queue slot associated with it,
1330                  * then a bug has been introduced in the queue refilling
1331                  * routines -- catch it here */
1332                 BUG_ON(rxb == NULL);
1333
1334                 rxq->queue[i] = NULL;
1335
1336                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1337                                             priv->hw_params.rx_buf_size,
1338                                             PCI_DMA_FROMDEVICE);
1339                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1340
1341                 /* Reclaim a command buffer only if this packet is a response
1342                  *   to a (driver-originated) command.
1343                  * If the packet (e.g. Rx frame) originated from uCode,
1344                  *   there is no command buffer to reclaim.
1345                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1346                  *   but apparently a few don't get set; catch them here. */
1347                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1348                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1349                         (pkt->hdr.cmd != REPLY_RX) &&
1350                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1351                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1352                         (pkt->hdr.cmd != REPLY_TX);
1353
1354                 /* Based on type of command response or notification,
1355                  *   handle those that need handling via function in
1356                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1357                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1358                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1359                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1360                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1361                 } else {
1362                         /* No handling needed */
1363                         IWL_DEBUG(IWL_DL_RX,
1364                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1365                                 r, i, get_cmd_string(pkt->hdr.cmd),
1366                                 pkt->hdr.cmd);
1367                 }
1368
1369                 if (reclaim) {
1370                         /* Invoke any callbacks, transfer the skb to caller, and
1371                          * fire off the (possibly) blocking iwl_send_cmd()
1372                          * as we reclaim the driver command queue */
1373                         if (rxb && rxb->skb)
1374                                 iwl_tx_cmd_complete(priv, rxb);
1375                         else
1376                                 IWL_WARNING("Claim null rxb?\n");
1377                 }
1378
1379                 /* For now we just don't re-use anything.  We can tweak this
1380                  * later to try and re-use notification packets and SKBs that
1381                  * fail to Rx correctly */
1382                 if (rxb->skb != NULL) {
1383                         priv->alloc_rxb_skb--;
1384                         dev_kfree_skb_any(rxb->skb);
1385                         rxb->skb = NULL;
1386                 }
1387
1388                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1389                                  priv->hw_params.rx_buf_size,
1390                                  PCI_DMA_FROMDEVICE);
1391                 spin_lock_irqsave(&rxq->lock, flags);
1392                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1393                 spin_unlock_irqrestore(&rxq->lock, flags);
1394                 i = (i + 1) & RX_QUEUE_MASK;
1395                 /* If there are a lot of unused frames,
1396                  * restock the Rx queue so ucode wont assert. */
1397                 if (fill_rx) {
1398                         count++;
1399                         if (count >= 8) {
1400                                 priv->rxq.read = i;
1401                                 __iwl_rx_replenish(priv);
1402                                 count = 0;
1403                         }
1404                 }
1405         }
1406
1407         /* Backtrack one entry */
1408         priv->rxq.read = i;
1409         iwl_rx_queue_restock(priv);
1410 }
1411
1412 #ifdef CONFIG_IWLWIFI_DEBUG
1413 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1414 {
1415         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1416         DECLARE_MAC_BUF(mac);
1417
1418         IWL_DEBUG_RADIO("RX CONFIG:\n");
1419         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1420         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1421         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1422         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1423                         le32_to_cpu(rxon->filter_flags));
1424         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1425         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1426                         rxon->ofdm_basic_rates);
1427         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1428         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1429                         print_mac(mac, rxon->node_addr));
1430         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1431                         print_mac(mac, rxon->bssid_addr));
1432         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1433 }
1434 #endif
1435
1436 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1437 {
1438         IWL_DEBUG_ISR("Enabling interrupts\n");
1439         set_bit(STATUS_INT_ENABLED, &priv->status);
1440         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1441 }
1442
1443 /* call this function to flush any scheduled tasklet */
1444 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1445 {
1446         /* wait to make sure we flush pedding tasklet*/
1447         synchronize_irq(priv->pci_dev->irq);
1448         tasklet_kill(&priv->irq_tasklet);
1449 }
1450
1451 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1452 {
1453         clear_bit(STATUS_INT_ENABLED, &priv->status);
1454
1455         /* disable interrupts from uCode/NIC to host */
1456         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1457
1458         /* acknowledge/clear/reset any interrupts still pending
1459          * from uCode or flow handler (Rx/Tx DMA) */
1460         iwl_write32(priv, CSR_INT, 0xffffffff);
1461         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1462         IWL_DEBUG_ISR("Disabled interrupts\n");
1463 }
1464
1465
1466 /**
1467  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1468  */
1469 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1470 {
1471         /* Set the FW error flag -- cleared on iwl4965_down */
1472         set_bit(STATUS_FW_ERROR, &priv->status);
1473
1474         /* Cancel currently queued command. */
1475         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1476
1477 #ifdef CONFIG_IWLWIFI_DEBUG
1478         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1479                 iwl_dump_nic_error_log(priv);
1480                 iwl_dump_nic_event_log(priv);
1481                 iwl4965_print_rx_config_cmd(priv);
1482         }
1483 #endif
1484
1485         wake_up_interruptible(&priv->wait_command_queue);
1486
1487         /* Keep the restart process from trying to send host
1488          * commands by clearing the INIT status bit */
1489         clear_bit(STATUS_READY, &priv->status);
1490
1491         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1492                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1493                           "Restarting adapter due to uCode error.\n");
1494
1495                 if (iwl_is_associated(priv)) {
1496                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1497                                sizeof(priv->recovery_rxon));
1498                         priv->error_recovering = 1;
1499                 }
1500                 if (priv->cfg->mod_params->restart_fw)
1501                         queue_work(priv->workqueue, &priv->restart);
1502         }
1503 }
1504
1505 static void iwl4965_error_recovery(struct iwl_priv *priv)
1506 {
1507         unsigned long flags;
1508
1509         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1510                sizeof(priv->staging_rxon));
1511         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1512         iwl4965_commit_rxon(priv);
1513
1514         iwl_rxon_add_station(priv, priv->bssid, 1);
1515
1516         spin_lock_irqsave(&priv->lock, flags);
1517         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1518         priv->error_recovering = 0;
1519         spin_unlock_irqrestore(&priv->lock, flags);
1520 }
1521
1522 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1523 {
1524         u32 inta, handled = 0;
1525         u32 inta_fh;
1526         unsigned long flags;
1527 #ifdef CONFIG_IWLWIFI_DEBUG
1528         u32 inta_mask;
1529 #endif
1530
1531         spin_lock_irqsave(&priv->lock, flags);
1532
1533         /* Ack/clear/reset pending uCode interrupts.
1534          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1535          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1536         inta = iwl_read32(priv, CSR_INT);
1537         iwl_write32(priv, CSR_INT, inta);
1538
1539         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1540          * Any new interrupts that happen after this, either while we're
1541          * in this tasklet, or later, will show up in next ISR/tasklet. */
1542         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1543         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1544
1545 #ifdef CONFIG_IWLWIFI_DEBUG
1546         if (priv->debug_level & IWL_DL_ISR) {
1547                 /* just for debug */
1548                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1549                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1550                               inta, inta_mask, inta_fh);
1551         }
1552 #endif
1553
1554         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1555          * atomic, make sure that inta covers all the interrupts that
1556          * we've discovered, even if FH interrupt came in just after
1557          * reading CSR_INT. */
1558         if (inta_fh & CSR49_FH_INT_RX_MASK)
1559                 inta |= CSR_INT_BIT_FH_RX;
1560         if (inta_fh & CSR49_FH_INT_TX_MASK)
1561                 inta |= CSR_INT_BIT_FH_TX;
1562
1563         /* Now service all interrupt bits discovered above. */
1564         if (inta & CSR_INT_BIT_HW_ERR) {
1565                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1566
1567                 /* Tell the device to stop sending interrupts */
1568                 iwl4965_disable_interrupts(priv);
1569
1570                 iwl4965_irq_handle_error(priv);
1571
1572                 handled |= CSR_INT_BIT_HW_ERR;
1573
1574                 spin_unlock_irqrestore(&priv->lock, flags);
1575
1576                 return;
1577         }
1578
1579 #ifdef CONFIG_IWLWIFI_DEBUG
1580         if (priv->debug_level & (IWL_DL_ISR)) {
1581                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1582                 if (inta & CSR_INT_BIT_SCD)
1583                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1584                                       "the frame/frames.\n");
1585
1586                 /* Alive notification via Rx interrupt will do the real work */
1587                 if (inta & CSR_INT_BIT_ALIVE)
1588                         IWL_DEBUG_ISR("Alive interrupt\n");
1589         }
1590 #endif
1591         /* Safely ignore these bits for debug checks below */
1592         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1593
1594         /* HW RF KILL switch toggled */
1595         if (inta & CSR_INT_BIT_RF_KILL) {
1596                 int hw_rf_kill = 0;
1597                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1598                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1599                         hw_rf_kill = 1;
1600
1601                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1602                                 hw_rf_kill ? "disable radio":"enable radio");
1603
1604                 /* Queue restart only if RF_KILL switch was set to "kill"
1605                  *   when we loaded driver, and is now set to "enable".
1606                  * After we're Alive, RF_KILL gets handled by
1607                  *   iwl4965_rx_card_state_notif() */
1608                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1609                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1610                         queue_work(priv->workqueue, &priv->restart);
1611                 }
1612
1613                 handled |= CSR_INT_BIT_RF_KILL;
1614         }
1615
1616         /* Chip got too hot and stopped itself */
1617         if (inta & CSR_INT_BIT_CT_KILL) {
1618                 IWL_ERROR("Microcode CT kill error detected.\n");
1619                 handled |= CSR_INT_BIT_CT_KILL;
1620         }
1621
1622         /* Error detected by uCode */
1623         if (inta & CSR_INT_BIT_SW_ERR) {
1624                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1625                           inta);
1626                 iwl4965_irq_handle_error(priv);
1627                 handled |= CSR_INT_BIT_SW_ERR;
1628         }
1629
1630         /* uCode wakes up after power-down sleep */
1631         if (inta & CSR_INT_BIT_WAKEUP) {
1632                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1633                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1634                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1635                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1636                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1637                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1638                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1640
1641                 handled |= CSR_INT_BIT_WAKEUP;
1642         }
1643
1644         /* All uCode command responses, including Tx command responses,
1645          * Rx "responses" (frame-received notification), and other
1646          * notifications from uCode come through here*/
1647         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1648                 iwl_rx_handle(priv);
1649                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1650         }
1651
1652         if (inta & CSR_INT_BIT_FH_TX) {
1653                 IWL_DEBUG_ISR("Tx interrupt\n");
1654                 handled |= CSR_INT_BIT_FH_TX;
1655                 /* FH finished to write, send event */
1656                 priv->ucode_write_complete = 1;
1657                 wake_up_interruptible(&priv->wait_command_queue);
1658         }
1659
1660         if (inta & ~handled)
1661                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1662
1663         if (inta & ~CSR_INI_SET_MASK) {
1664                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1665                          inta & ~CSR_INI_SET_MASK);
1666                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1667         }
1668
1669         /* Re-enable all interrupts */
1670         /* only Re-enable if diabled by irq */
1671         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1672                 iwl4965_enable_interrupts(priv);
1673
1674 #ifdef CONFIG_IWLWIFI_DEBUG
1675         if (priv->debug_level & (IWL_DL_ISR)) {
1676                 inta = iwl_read32(priv, CSR_INT);
1677                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1678                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1679                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1680                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1681         }
1682 #endif
1683         spin_unlock_irqrestore(&priv->lock, flags);
1684 }
1685
1686 static irqreturn_t iwl4965_isr(int irq, void *data)
1687 {
1688         struct iwl_priv *priv = data;
1689         u32 inta, inta_mask;
1690         u32 inta_fh;
1691         if (!priv)
1692                 return IRQ_NONE;
1693
1694         spin_lock(&priv->lock);
1695
1696         /* Disable (but don't clear!) interrupts here to avoid
1697          *    back-to-back ISRs and sporadic interrupts from our NIC.
1698          * If we have something to service, the tasklet will re-enable ints.
1699          * If we *don't* have something, we'll re-enable before leaving here. */
1700         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1701         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1702
1703         /* Discover which interrupts are active/pending */
1704         inta = iwl_read32(priv, CSR_INT);
1705         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1706
1707         /* Ignore interrupt if there's nothing in NIC to service.
1708          * This may be due to IRQ shared with another device,
1709          * or due to sporadic interrupts thrown from our NIC. */
1710         if (!inta && !inta_fh) {
1711                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1712                 goto none;
1713         }
1714
1715         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1716                 /* Hardware disappeared. It might have already raised
1717                  * an interrupt */
1718                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1719                 goto unplugged;
1720         }
1721
1722         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1723                       inta, inta_mask, inta_fh);
1724
1725         inta &= ~CSR_INT_BIT_SCD;
1726
1727         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1728         if (likely(inta || inta_fh))
1729                 tasklet_schedule(&priv->irq_tasklet);
1730
1731  unplugged:
1732         spin_unlock(&priv->lock);
1733         return IRQ_HANDLED;
1734
1735  none:
1736         /* re-enable interrupts here since we don't have anything to service. */
1737         /* only Re-enable if diabled by irq */
1738         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1739                 iwl4965_enable_interrupts(priv);
1740         spin_unlock(&priv->lock);
1741         return IRQ_NONE;
1742 }
1743
1744 /******************************************************************************
1745  *
1746  * uCode download functions
1747  *
1748  ******************************************************************************/
1749
1750 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1751 {
1752         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1753         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1754         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1755         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1756         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1758 }
1759
1760 static void iwl4965_nic_start(struct iwl_priv *priv)
1761 {
1762         /* Remove all resets to allow NIC to operate */
1763         iwl_write32(priv, CSR_RESET, 0);
1764 }
1765
1766
1767 /**
1768  * iwl4965_read_ucode - Read uCode images from disk file.
1769  *
1770  * Copy into buffers for card to fetch via bus-mastering
1771  */
1772 static int iwl4965_read_ucode(struct iwl_priv *priv)
1773 {
1774         struct iwl_ucode *ucode;
1775         int ret;
1776         const struct firmware *ucode_raw;
1777         const char *name = priv->cfg->fw_name;
1778         u8 *src;
1779         size_t len;
1780         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1781
1782         /* Ask kernel firmware_class module to get the boot firmware off disk.
1783          * request_firmware() is synchronous, file is in memory on return. */
1784         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1785         if (ret < 0) {
1786                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1787                                         name, ret);
1788                 goto error;
1789         }
1790
1791         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1792                        name, ucode_raw->size);
1793
1794         /* Make sure that we got at least our header! */
1795         if (ucode_raw->size < sizeof(*ucode)) {
1796                 IWL_ERROR("File size way too small!\n");
1797                 ret = -EINVAL;
1798                 goto err_release;
1799         }
1800
1801         /* Data from ucode file:  header followed by uCode images */
1802         ucode = (void *)ucode_raw->data;
1803
1804         ver = le32_to_cpu(ucode->ver);
1805         inst_size = le32_to_cpu(ucode->inst_size);
1806         data_size = le32_to_cpu(ucode->data_size);
1807         init_size = le32_to_cpu(ucode->init_size);
1808         init_data_size = le32_to_cpu(ucode->init_data_size);
1809         boot_size = le32_to_cpu(ucode->boot_size);
1810
1811         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1812         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1813                        inst_size);
1814         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1815                        data_size);
1816         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1817                        init_size);
1818         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1819                        init_data_size);
1820         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1821                        boot_size);
1822
1823         /* Verify size of file vs. image size info in file's header */
1824         if (ucode_raw->size < sizeof(*ucode) +
1825                 inst_size + data_size + init_size +
1826                 init_data_size + boot_size) {
1827
1828                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1829                                (int)ucode_raw->size);
1830                 ret = -EINVAL;
1831                 goto err_release;
1832         }
1833
1834         /* Verify that uCode images will fit in card's SRAM */
1835         if (inst_size > priv->hw_params.max_inst_size) {
1836                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1837                                inst_size);
1838                 ret = -EINVAL;
1839                 goto err_release;
1840         }
1841
1842         if (data_size > priv->hw_params.max_data_size) {
1843                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1844                                 data_size);
1845                 ret = -EINVAL;
1846                 goto err_release;
1847         }
1848         if (init_size > priv->hw_params.max_inst_size) {
1849                 IWL_DEBUG_INFO
1850                     ("uCode init instr len %d too large to fit in\n",
1851                       init_size);
1852                 ret = -EINVAL;
1853                 goto err_release;
1854         }
1855         if (init_data_size > priv->hw_params.max_data_size) {
1856                 IWL_DEBUG_INFO
1857                     ("uCode init data len %d too large to fit in\n",
1858                       init_data_size);
1859                 ret = -EINVAL;
1860                 goto err_release;
1861         }
1862         if (boot_size > priv->hw_params.max_bsm_size) {
1863                 IWL_DEBUG_INFO
1864                     ("uCode boot instr len %d too large to fit in\n",
1865                       boot_size);
1866                 ret = -EINVAL;
1867                 goto err_release;
1868         }
1869
1870         /* Allocate ucode buffers for card's bus-master loading ... */
1871
1872         /* Runtime instructions and 2 copies of data:
1873          * 1) unmodified from disk
1874          * 2) backup cache for save/restore during power-downs */
1875         priv->ucode_code.len = inst_size;
1876         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1877
1878         priv->ucode_data.len = data_size;
1879         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1880
1881         priv->ucode_data_backup.len = data_size;
1882         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1883
1884         /* Initialization instructions and data */
1885         if (init_size && init_data_size) {
1886                 priv->ucode_init.len = init_size;
1887                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1888
1889                 priv->ucode_init_data.len = init_data_size;
1890                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1891
1892                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1893                         goto err_pci_alloc;
1894         }
1895
1896         /* Bootstrap (instructions only, no data) */
1897         if (boot_size) {
1898                 priv->ucode_boot.len = boot_size;
1899                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1900
1901                 if (!priv->ucode_boot.v_addr)
1902                         goto err_pci_alloc;
1903         }
1904
1905         /* Copy images into buffers for card's bus-master reads ... */
1906
1907         /* Runtime instructions (first block of data in file) */
1908         src = &ucode->data[0];
1909         len = priv->ucode_code.len;
1910         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1911         memcpy(priv->ucode_code.v_addr, src, len);
1912         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1913                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1914
1915         /* Runtime data (2nd block)
1916          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1917         src = &ucode->data[inst_size];
1918         len = priv->ucode_data.len;
1919         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1920         memcpy(priv->ucode_data.v_addr, src, len);
1921         memcpy(priv->ucode_data_backup.v_addr, src, len);
1922
1923         /* Initialization instructions (3rd block) */
1924         if (init_size) {
1925                 src = &ucode->data[inst_size + data_size];
1926                 len = priv->ucode_init.len;
1927                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1928                                 len);
1929                 memcpy(priv->ucode_init.v_addr, src, len);
1930         }
1931
1932         /* Initialization data (4th block) */
1933         if (init_data_size) {
1934                 src = &ucode->data[inst_size + data_size + init_size];
1935                 len = priv->ucode_init_data.len;
1936                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1937                                len);
1938                 memcpy(priv->ucode_init_data.v_addr, src, len);
1939         }
1940
1941         /* Bootstrap instructions (5th block) */
1942         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1943         len = priv->ucode_boot.len;
1944         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1945         memcpy(priv->ucode_boot.v_addr, src, len);
1946
1947         /* We have our copies now, allow OS release its copies */
1948         release_firmware(ucode_raw);
1949         return 0;
1950
1951  err_pci_alloc:
1952         IWL_ERROR("failed to allocate pci memory\n");
1953         ret = -ENOMEM;
1954         iwl4965_dealloc_ucode_pci(priv);
1955
1956  err_release:
1957         release_firmware(ucode_raw);
1958
1959  error:
1960         return ret;
1961 }
1962
1963 /**
1964  * iwl_alive_start - called after REPLY_ALIVE notification received
1965  *                   from protocol/runtime uCode (initialization uCode's
1966  *                   Alive gets handled by iwl_init_alive_start()).
1967  */
1968 static void iwl_alive_start(struct iwl_priv *priv)
1969 {
1970         int ret = 0;
1971
1972         IWL_DEBUG_INFO("Runtime Alive received.\n");
1973
1974         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1975                 /* We had an error bringing up the hardware, so take it
1976                  * all the way back down so we can try again */
1977                 IWL_DEBUG_INFO("Alive failed.\n");
1978                 goto restart;
1979         }
1980
1981         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1982          * This is a paranoid check, because we would not have gotten the
1983          * "runtime" alive if code weren't properly loaded.  */
1984         if (iwl_verify_ucode(priv)) {
1985                 /* Runtime instruction load was bad;
1986                  * take it all the way back down so we can try again */
1987                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1988                 goto restart;
1989         }
1990
1991         iwl_clear_stations_table(priv);
1992         ret = priv->cfg->ops->lib->alive_notify(priv);
1993         if (ret) {
1994                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1995                             ret);
1996                 goto restart;
1997         }
1998
1999         /* After the ALIVE response, we can send host commands to 4965 uCode */
2000         set_bit(STATUS_ALIVE, &priv->status);
2001
2002         if (iwl_is_rfkill(priv))
2003                 return;
2004
2005         ieee80211_wake_queues(priv->hw);
2006
2007         priv->active_rate = priv->rates_mask;
2008         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2009
2010         if (iwl_is_associated(priv)) {
2011                 struct iwl_rxon_cmd *active_rxon =
2012                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2013
2014                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2015                        sizeof(priv->staging_rxon));
2016                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2017         } else {
2018                 /* Initialize our rx_config data */
2019                 iwl4965_connection_init_rx_config(priv);
2020                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2021         }
2022
2023         /* Configure Bluetooth device coexistence support */
2024         iwl4965_send_bt_config(priv);
2025
2026         iwl_reset_run_time_calib(priv);
2027
2028         /* Configure the adapter for unassociated operation */
2029         iwl4965_commit_rxon(priv);
2030
2031         /* At this point, the NIC is initialized and operational */
2032         iwl_rf_kill_ct_config(priv);
2033
2034         iwl_leds_register(priv);
2035
2036         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2037         set_bit(STATUS_READY, &priv->status);
2038         wake_up_interruptible(&priv->wait_command_queue);
2039
2040         if (priv->error_recovering)
2041                 iwl4965_error_recovery(priv);
2042
2043         iwl_power_update_mode(priv, 1);
2044         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2045
2046         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2047                 iwl4965_set_mode(priv, priv->iw_mode);
2048
2049         return;
2050
2051  restart:
2052         queue_work(priv->workqueue, &priv->restart);
2053 }
2054
2055 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2056
2057 static void __iwl4965_down(struct iwl_priv *priv)
2058 {
2059         unsigned long flags;
2060         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2061
2062         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2063
2064         if (!exit_pending)
2065                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067         iwl_leds_unregister(priv);
2068
2069         iwl_clear_stations_table(priv);
2070
2071         /* Unblock any waiting calls */
2072         wake_up_interruptible_all(&priv->wait_command_queue);
2073
2074         /* Wipe out the EXIT_PENDING status bit if we are not actually
2075          * exiting the module */
2076         if (!exit_pending)
2077                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2078
2079         /* stop and reset the on-board processor */
2080         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2081
2082         /* tell the device to stop sending interrupts */
2083         spin_lock_irqsave(&priv->lock, flags);
2084         iwl4965_disable_interrupts(priv);
2085         spin_unlock_irqrestore(&priv->lock, flags);
2086         iwl_synchronize_irq(priv);
2087
2088         if (priv->mac80211_registered)
2089                 ieee80211_stop_queues(priv->hw);
2090
2091         /* If we have not previously called iwl4965_init() then
2092          * clear all bits but the RF Kill and SUSPEND bits and return */
2093         if (!iwl_is_init(priv)) {
2094                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2095                                         STATUS_RF_KILL_HW |
2096                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2097                                         STATUS_RF_KILL_SW |
2098                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2099                                         STATUS_GEO_CONFIGURED |
2100                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2101                                         STATUS_IN_SUSPEND;
2102                 goto exit;
2103         }
2104
2105         /* ...otherwise clear out all the status bits but the RF Kill and
2106          * SUSPEND bits and continue taking the NIC down. */
2107         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2108                                 STATUS_RF_KILL_HW |
2109                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2110                                 STATUS_RF_KILL_SW |
2111                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2112                                 STATUS_GEO_CONFIGURED |
2113                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2114                                 STATUS_IN_SUSPEND |
2115                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2116                                 STATUS_FW_ERROR;
2117
2118         spin_lock_irqsave(&priv->lock, flags);
2119         iwl_clear_bit(priv, CSR_GP_CNTRL,
2120                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2121         spin_unlock_irqrestore(&priv->lock, flags);
2122
2123         iwl_txq_ctx_stop(priv);
2124         iwl_rxq_stop(priv);
2125
2126         spin_lock_irqsave(&priv->lock, flags);
2127         if (!iwl_grab_nic_access(priv)) {
2128                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2129                                          APMG_CLK_VAL_DMA_CLK_RQT);
2130                 iwl_release_nic_access(priv);
2131         }
2132         spin_unlock_irqrestore(&priv->lock, flags);
2133
2134         udelay(5);
2135
2136         /* FIXME: apm_ops.suspend(priv) */
2137         priv->cfg->ops->lib->apm_ops.reset(priv);
2138         priv->cfg->ops->lib->free_shared_mem(priv);
2139
2140  exit:
2141         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2142
2143         if (priv->ibss_beacon)
2144                 dev_kfree_skb(priv->ibss_beacon);
2145         priv->ibss_beacon = NULL;
2146
2147         /* clear out any free frames */
2148         iwl_clear_free_frames(priv);
2149 }
2150
2151 static void iwl4965_down(struct iwl_priv *priv)
2152 {
2153         mutex_lock(&priv->mutex);
2154         __iwl4965_down(priv);
2155         mutex_unlock(&priv->mutex);
2156
2157         iwl_cancel_deferred_work(priv);
2158 }
2159
2160 #define MAX_HW_RESTARTS 5
2161
2162 static int __iwl4965_up(struct iwl_priv *priv)
2163 {
2164         int i;
2165         int ret;
2166
2167         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2168                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2169                 return -EIO;
2170         }
2171
2172         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2173                 IWL_ERROR("ucode not available for device bringup\n");
2174                 return -EIO;
2175         }
2176
2177         /* If platform's RF_KILL switch is NOT set to KILL */
2178         if (iwl_read32(priv, CSR_GP_CNTRL) &
2179                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2180                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2181         else {
2182                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2183                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2184                         iwl_rfkill_set_hw_state(priv);
2185                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2186                         return -ENODEV;
2187                 }
2188         }
2189
2190         iwl_rfkill_set_hw_state(priv);
2191         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2192
2193         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2194         if (ret) {
2195                 IWL_ERROR("Unable to allocate shared memory\n");
2196                 return ret;
2197         }
2198
2199         ret = iwl_hw_nic_init(priv);
2200         if (ret) {
2201                 IWL_ERROR("Unable to init nic\n");
2202                 return ret;
2203         }
2204
2205         /* make sure rfkill handshake bits are cleared */
2206         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2207         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2208                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2209
2210         /* clear (again), then enable host interrupts */
2211         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2212         iwl4965_enable_interrupts(priv);
2213
2214         /* really make sure rfkill handshake bits are cleared */
2215         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2216         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2217
2218         /* Copy original ucode data image from disk into backup cache.
2219          * This will be used to initialize the on-board processor's
2220          * data SRAM for a clean start when the runtime program first loads. */
2221         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2222                priv->ucode_data.len);
2223
2224         /* We return success when we resume from suspend and rf_kill is on. */
2225         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2226             test_bit(STATUS_RF_KILL_SW, &priv->status))
2227                 return 0;
2228
2229         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2230
2231                 iwl_clear_stations_table(priv);
2232
2233                 /* load bootstrap state machine,
2234                  * load bootstrap program into processor's memory,
2235                  * prepare to load the "initialize" uCode */
2236                 ret = priv->cfg->ops->lib->load_ucode(priv);
2237
2238                 if (ret) {
2239                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2240                         continue;
2241                 }
2242
2243                 /* Clear out the uCode error bit if it is set */
2244                 clear_bit(STATUS_FW_ERROR, &priv->status);
2245
2246                 /* start card; "initialize" will load runtime ucode */
2247                 iwl4965_nic_start(priv);
2248
2249                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2250
2251                 return 0;
2252         }
2253
2254         set_bit(STATUS_EXIT_PENDING, &priv->status);
2255         __iwl4965_down(priv);
2256         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2257
2258         /* tried to restart and config the device for as long as our
2259          * patience could withstand */
2260         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2261         return -EIO;
2262 }
2263
2264
2265 /*****************************************************************************
2266  *
2267  * Workqueue callbacks
2268  *
2269  *****************************************************************************/
2270
2271 static void iwl_bg_init_alive_start(struct work_struct *data)
2272 {
2273         struct iwl_priv *priv =
2274             container_of(data, struct iwl_priv, init_alive_start.work);
2275
2276         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2277                 return;
2278
2279         mutex_lock(&priv->mutex);
2280         priv->cfg->ops->lib->init_alive_start(priv);
2281         mutex_unlock(&priv->mutex);
2282 }
2283
2284 static void iwl_bg_alive_start(struct work_struct *data)
2285 {
2286         struct iwl_priv *priv =
2287             container_of(data, struct iwl_priv, alive_start.work);
2288
2289         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2290                 return;
2291
2292         mutex_lock(&priv->mutex);
2293         iwl_alive_start(priv);
2294         mutex_unlock(&priv->mutex);
2295 }
2296
2297 static void iwl4965_bg_rf_kill(struct work_struct *work)
2298 {
2299         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2300
2301         wake_up_interruptible(&priv->wait_command_queue);
2302
2303         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2304                 return;
2305
2306         mutex_lock(&priv->mutex);
2307
2308         if (!iwl_is_rfkill(priv)) {
2309                 IWL_DEBUG(IWL_DL_RF_KILL,
2310                           "HW and/or SW RF Kill no longer active, restarting "
2311                           "device\n");
2312                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2313                         queue_work(priv->workqueue, &priv->restart);
2314         } else {
2315                 /* make sure mac80211 stop sending Tx frame */
2316                 if (priv->mac80211_registered)
2317                         ieee80211_stop_queues(priv->hw);
2318
2319                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2320                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2321                                           "disabled by SW switch\n");
2322                 else
2323                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2324                                     "Kill switch must be turned off for "
2325                                     "wireless networking to work.\n");
2326         }
2327         iwl_rfkill_set_hw_state(priv);
2328
2329         mutex_unlock(&priv->mutex);
2330 }
2331
2332 static void iwl4965_bg_set_monitor(struct work_struct *work)
2333 {
2334         struct iwl_priv *priv = container_of(work,
2335                                 struct iwl_priv, set_monitor);
2336         int ret;
2337
2338         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2339
2340         mutex_lock(&priv->mutex);
2341
2342         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2343
2344         if (ret) {
2345                 if (ret == -EAGAIN)
2346                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2347                 else
2348                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2349         }
2350
2351         mutex_unlock(&priv->mutex);
2352 }
2353
2354 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2355 {
2356         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2357                         run_time_calib_work);
2358
2359         mutex_lock(&priv->mutex);
2360
2361         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2362             test_bit(STATUS_SCANNING, &priv->status)) {
2363                 mutex_unlock(&priv->mutex);
2364                 return;
2365         }
2366
2367         if (priv->start_calib) {
2368                 iwl_chain_noise_calibration(priv, &priv->statistics);
2369
2370                 iwl_sensitivity_calibration(priv, &priv->statistics);
2371         }
2372
2373         mutex_unlock(&priv->mutex);
2374         return;
2375 }
2376
2377 static void iwl4965_bg_up(struct work_struct *data)
2378 {
2379         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2380
2381         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2382                 return;
2383
2384         mutex_lock(&priv->mutex);
2385         __iwl4965_up(priv);
2386         mutex_unlock(&priv->mutex);
2387 }
2388
2389 static void iwl4965_bg_restart(struct work_struct *data)
2390 {
2391         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2392
2393         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2394                 return;
2395
2396         iwl4965_down(priv);
2397         queue_work(priv->workqueue, &priv->up);
2398 }
2399
2400 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2401 {
2402         struct iwl_priv *priv =
2403             container_of(data, struct iwl_priv, rx_replenish);
2404
2405         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2406                 return;
2407
2408         mutex_lock(&priv->mutex);
2409         iwl_rx_replenish(priv);
2410         mutex_unlock(&priv->mutex);
2411 }
2412
2413 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2414
2415 static void iwl4965_post_associate(struct iwl_priv *priv)
2416 {
2417         struct ieee80211_conf *conf = NULL;
2418         int ret = 0;
2419         DECLARE_MAC_BUF(mac);
2420
2421         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2422                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2423                 return;
2424         }
2425
2426         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2427                         priv->assoc_id,
2428                         print_mac(mac, priv->active_rxon.bssid_addr));
2429
2430
2431         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2432                 return;
2433
2434
2435         if (!priv->vif || !priv->is_open)
2436                 return;
2437
2438         iwl_scan_cancel_timeout(priv, 200);
2439
2440         conf = ieee80211_get_hw_conf(priv->hw);
2441
2442         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2443         iwl4965_commit_rxon(priv);
2444
2445         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2446         iwl4965_setup_rxon_timing(priv);
2447         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2448                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2449         if (ret)
2450                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2451                             "Attempting to continue.\n");
2452
2453         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2454
2455         if (priv->current_ht_config.is_ht)
2456                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2457
2458         iwl_set_rxon_chain(priv);
2459         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2460
2461         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2462                         priv->assoc_id, priv->beacon_int);
2463
2464         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2465                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2466         else
2467                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2468
2469         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2470                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2471                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2472                 else
2473                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2474
2475                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2476                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2477
2478         }
2479
2480         iwl4965_commit_rxon(priv);
2481
2482         switch (priv->iw_mode) {
2483         case IEEE80211_IF_TYPE_STA:
2484                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2485                 break;
2486
2487         case IEEE80211_IF_TYPE_IBSS:
2488
2489                 /* assume default assoc id */
2490                 priv->assoc_id = 1;
2491
2492                 iwl_rxon_add_station(priv, priv->bssid, 0);
2493                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2494                 iwl4965_send_beacon_cmd(priv);
2495
2496                 break;
2497
2498         default:
2499                 IWL_ERROR("%s Should not be called in %d mode\n",
2500                                 __FUNCTION__, priv->iw_mode);
2501                 break;
2502         }
2503
2504         /* Enable Rx differential gain and sensitivity calibrations */
2505         iwl_chain_noise_reset(priv);
2506         priv->start_calib = 1;
2507
2508         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2509                 priv->assoc_station_added = 1;
2510
2511         iwl4965_activate_qos(priv, 0);
2512
2513         iwl_power_update_mode(priv, 0);
2514         /* we have just associated, don't start scan too early */
2515         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2516 }
2517
2518
2519 static void iwl4965_bg_post_associate(struct work_struct *data)
2520 {
2521         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2522                                              post_associate.work);
2523
2524         mutex_lock(&priv->mutex);
2525         iwl4965_post_associate(priv);
2526         mutex_unlock(&priv->mutex);
2527
2528 }
2529
2530 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2531
2532 static void iwl_bg_scan_completed(struct work_struct *work)
2533 {
2534         struct iwl_priv *priv =
2535             container_of(work, struct iwl_priv, scan_completed);
2536
2537         IWL_DEBUG_SCAN("SCAN complete scan\n");
2538
2539         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2540                 return;
2541
2542         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2543                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2544
2545         ieee80211_scan_completed(priv->hw);
2546
2547         /* Since setting the TXPOWER may have been deferred while
2548          * performing the scan, fire one off */
2549         mutex_lock(&priv->mutex);
2550         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2551         mutex_unlock(&priv->mutex);
2552 }
2553
2554 /*****************************************************************************
2555  *
2556  * mac80211 entry point functions
2557  *
2558  *****************************************************************************/
2559
2560 #define UCODE_READY_TIMEOUT     (2 * HZ)
2561
2562 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2563 {
2564         struct iwl_priv *priv = hw->priv;
2565         int ret;
2566
2567         IWL_DEBUG_MAC80211("enter\n");
2568
2569         if (pci_enable_device(priv->pci_dev)) {
2570                 IWL_ERROR("Fail to pci_enable_device\n");
2571                 return -ENODEV;
2572         }
2573         pci_restore_state(priv->pci_dev);
2574         pci_enable_msi(priv->pci_dev);
2575
2576         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2577                           DRV_NAME, priv);
2578         if (ret) {
2579                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2580                 goto out_disable_msi;
2581         }
2582
2583         /* we should be verifying the device is ready to be opened */
2584         mutex_lock(&priv->mutex);
2585
2586         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2587         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2588          * ucode filename and max sizes are card-specific. */
2589
2590         if (!priv->ucode_code.len) {
2591                 ret = iwl4965_read_ucode(priv);
2592                 if (ret) {
2593                         IWL_ERROR("Could not read microcode: %d\n", ret);
2594                         mutex_unlock(&priv->mutex);
2595                         goto out_release_irq;
2596                 }
2597         }
2598
2599         ret = __iwl4965_up(priv);
2600
2601         mutex_unlock(&priv->mutex);
2602
2603         if (ret)
2604                 goto out_release_irq;
2605
2606         IWL_DEBUG_INFO("Start UP work done.\n");
2607
2608         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2609                 return 0;
2610
2611         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2612          * mac80211 will not be run successfully. */
2613         if (priv->ucode_type == UCODE_RT) {
2614                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2615                                 test_bit(STATUS_READY, &priv->status),
2616                                 UCODE_READY_TIMEOUT);
2617                 if (!ret) {
2618                         if (!test_bit(STATUS_READY, &priv->status)) {
2619                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2620                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2621                                 ret = -ETIMEDOUT;
2622                                 goto out_release_irq;
2623                         }
2624                 }
2625
2626                 priv->is_open = 1;
2627         }
2628         IWL_DEBUG_MAC80211("leave\n");
2629         return 0;
2630
2631 out_release_irq:
2632         free_irq(priv->pci_dev->irq, priv);
2633 out_disable_msi:
2634         pci_disable_msi(priv->pci_dev);
2635         pci_disable_device(priv->pci_dev);
2636         priv->is_open = 0;
2637         IWL_DEBUG_MAC80211("leave - failed\n");
2638         return ret;
2639 }
2640
2641 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2642 {
2643         struct iwl_priv *priv = hw->priv;
2644
2645         IWL_DEBUG_MAC80211("enter\n");
2646
2647         if (!priv->is_open) {
2648                 IWL_DEBUG_MAC80211("leave - skip\n");
2649                 return;
2650         }
2651
2652         priv->is_open = 0;
2653
2654         if (iwl_is_ready_rf(priv)) {
2655                 /* stop mac, cancel any scan request and clear
2656                  * RXON_FILTER_ASSOC_MSK BIT
2657                  */
2658                 mutex_lock(&priv->mutex);
2659                 iwl_scan_cancel_timeout(priv, 100);
2660                 cancel_delayed_work(&priv->post_associate);
2661                 mutex_unlock(&priv->mutex);
2662         }
2663
2664         iwl4965_down(priv);
2665
2666         flush_workqueue(priv->workqueue);
2667         free_irq(priv->pci_dev->irq, priv);
2668         pci_disable_msi(priv->pci_dev);
2669         pci_save_state(priv->pci_dev);
2670         pci_disable_device(priv->pci_dev);
2671
2672         IWL_DEBUG_MAC80211("leave\n");
2673 }
2674
2675 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2676 {
2677         struct iwl_priv *priv = hw->priv;
2678
2679         IWL_DEBUG_MAC80211("enter\n");
2680
2681         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2682                 IWL_DEBUG_MAC80211("leave - monitor\n");
2683                 return -1;
2684         }
2685
2686         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2687                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2688
2689         if (iwl_tx_skb(priv, skb))
2690                 dev_kfree_skb_any(skb);
2691
2692         IWL_DEBUG_MAC80211("leave\n");
2693         return 0;
2694 }
2695
2696 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2697                                  struct ieee80211_if_init_conf *conf)
2698 {
2699         struct iwl_priv *priv = hw->priv;
2700         unsigned long flags;
2701         DECLARE_MAC_BUF(mac);
2702
2703         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2704
2705         if (priv->vif) {
2706                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2707                 return -EOPNOTSUPP;
2708         }
2709
2710         spin_lock_irqsave(&priv->lock, flags);
2711         priv->vif = conf->vif;
2712
2713         spin_unlock_irqrestore(&priv->lock, flags);
2714
2715         mutex_lock(&priv->mutex);
2716
2717         if (conf->mac_addr) {
2718                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2719                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2720         }
2721
2722         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2723                 /* we are not ready, will run again when ready */
2724                 set_bit(STATUS_MODE_PENDING, &priv->status);
2725
2726         mutex_unlock(&priv->mutex);
2727
2728         IWL_DEBUG_MAC80211("leave\n");
2729         return 0;
2730 }
2731
2732 /**
2733  * iwl4965_mac_config - mac80211 config callback
2734  *
2735  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2736  * be set inappropriately and the driver currently sets the hardware up to
2737  * use it whenever needed.
2738  */
2739 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2740 {
2741         struct iwl_priv *priv = hw->priv;
2742         const struct iwl_channel_info *ch_info;
2743         unsigned long flags;
2744         int ret = 0;
2745         u16 channel;
2746
2747         mutex_lock(&priv->mutex);
2748         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2749
2750         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2751
2752         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2753                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2754                 goto out;
2755         }
2756
2757         if (!conf->radio_enabled)
2758                 iwl_radio_kill_sw_disable_radio(priv);
2759
2760         if (!iwl_is_ready(priv)) {
2761                 IWL_DEBUG_MAC80211("leave - not ready\n");
2762                 ret = -EIO;
2763                 goto out;
2764         }
2765
2766         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2767                      test_bit(STATUS_SCANNING, &priv->status))) {
2768                 IWL_DEBUG_MAC80211("leave - scanning\n");
2769                 set_bit(STATUS_CONF_PENDING, &priv->status);
2770                 mutex_unlock(&priv->mutex);
2771                 return 0;
2772         }
2773
2774         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2775         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2776         if (!is_channel_valid(ch_info)) {
2777                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2778                 ret = -EINVAL;
2779                 goto out;
2780         }
2781
2782         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2783             !is_channel_ibss(ch_info)) {
2784                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2785                         conf->channel->hw_value, conf->channel->band);
2786                 ret = -EINVAL;
2787                 goto out;
2788         }
2789
2790         spin_lock_irqsave(&priv->lock, flags);
2791
2792         /* if we are switching from ht to 2.4 clear flags
2793          * from any ht related info since 2.4 does not
2794          * support ht */
2795         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2796 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2797             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2798 #endif
2799         )
2800                 priv->staging_rxon.flags = 0;
2801
2802         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2803
2804         iwl_set_flags_for_band(priv, conf->channel->band);
2805
2806         /* The list of supported rates and rate mask can be different
2807          * for each band; since the band may have changed, reset
2808          * the rate mask to what mac80211 lists */
2809         iwl4965_set_rate(priv);
2810
2811         spin_unlock_irqrestore(&priv->lock, flags);
2812
2813 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2814         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2815                 iwl4965_hw_channel_switch(priv, conf->channel);
2816                 goto out;
2817         }
2818 #endif
2819
2820         if (!conf->radio_enabled) {
2821                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2822                 goto out;
2823         }
2824
2825         if (iwl_is_rfkill(priv)) {
2826                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2827                 ret = -EIO;
2828                 goto out;
2829         }
2830
2831         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2832                            priv->tx_power_user_lmt, conf->power_level);
2833
2834         iwl_set_tx_power(priv, conf->power_level, false);
2835
2836         iwl4965_set_rate(priv);
2837
2838         if (memcmp(&priv->active_rxon,
2839                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2840                 iwl4965_commit_rxon(priv);
2841         else
2842                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2843
2844         IWL_DEBUG_MAC80211("leave\n");
2845
2846 out:
2847         clear_bit(STATUS_CONF_PENDING, &priv->status);
2848         mutex_unlock(&priv->mutex);
2849         return ret;
2850 }
2851
2852 static void iwl4965_config_ap(struct iwl_priv *priv)
2853 {
2854         int ret = 0;
2855
2856         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2857                 return;
2858
2859         /* The following should be done only at AP bring up */
2860         if (!(iwl_is_associated(priv))) {
2861
2862                 /* RXON - unassoc (to set timing command) */
2863                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2864                 iwl4965_commit_rxon(priv);
2865
2866                 /* RXON Timing */
2867                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2868                 iwl4965_setup_rxon_timing(priv);
2869                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2870                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2871                 if (ret)
2872                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2873                                         "Attempting to continue.\n");
2874
2875                 iwl_set_rxon_chain(priv);
2876
2877                 /* FIXME: what should be the assoc_id for AP? */
2878                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2879                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2880                         priv->staging_rxon.flags |=
2881                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2882                 else
2883                         priv->staging_rxon.flags &=
2884                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2885
2886                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2887                         if (priv->assoc_capability &
2888                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2889                                 priv->staging_rxon.flags |=
2890                                         RXON_FLG_SHORT_SLOT_MSK;
2891                         else
2892                                 priv->staging_rxon.flags &=
2893                                         ~RXON_FLG_SHORT_SLOT_MSK;
2894
2895                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2896                                 priv->staging_rxon.flags &=
2897                                         ~RXON_FLG_SHORT_SLOT_MSK;
2898                 }
2899                 /* restore RXON assoc */
2900                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2901                 iwl4965_commit_rxon(priv);
2902                 iwl4965_activate_qos(priv, 1);
2903                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2904         }
2905         iwl4965_send_beacon_cmd(priv);
2906
2907         /* FIXME - we need to add code here to detect a totally new
2908          * configuration, reset the AP, unassoc, rxon timing, assoc,
2909          * clear sta table, add BCAST sta... */
2910 }
2911
2912 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2913                                         struct ieee80211_vif *vif,
2914                                     struct ieee80211_if_conf *conf)
2915 {
2916         struct iwl_priv *priv = hw->priv;
2917         DECLARE_MAC_BUF(mac);
2918         unsigned long flags;
2919         int rc;
2920
2921         if (conf == NULL)
2922                 return -EIO;
2923
2924         if (priv->vif != vif) {
2925                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2926                 return 0;
2927         }
2928
2929         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2930             (!conf->beacon || !conf->ssid_len)) {
2931                 IWL_DEBUG_MAC80211
2932                     ("Leaving in AP mode because HostAPD is not ready.\n");
2933                 return 0;
2934         }
2935
2936         if (!iwl_is_alive(priv))
2937                 return -EAGAIN;
2938
2939         mutex_lock(&priv->mutex);
2940
2941         if (conf->bssid)
2942                 IWL_DEBUG_MAC80211("bssid: %s\n",
2943                                    print_mac(mac, conf->bssid));
2944
2945 /*
2946  * very dubious code was here; the probe filtering flag is never set:
2947  *
2948         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2949             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2950  */
2951
2952         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2953                 if (!conf->bssid) {
2954                         conf->bssid = priv->mac_addr;
2955                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2956                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2957                                            print_mac(mac, conf->bssid));
2958                 }
2959                 if (priv->ibss_beacon)
2960                         dev_kfree_skb(priv->ibss_beacon);
2961
2962                 priv->ibss_beacon = conf->beacon;
2963         }
2964
2965         if (iwl_is_rfkill(priv))
2966                 goto done;
2967
2968         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2969             !is_multicast_ether_addr(conf->bssid)) {
2970                 /* If there is currently a HW scan going on in the background
2971                  * then we need to cancel it else the RXON below will fail. */
2972                 if (iwl_scan_cancel_timeout(priv, 100)) {
2973                         IWL_WARNING("Aborted scan still in progress "
2974                                     "after 100ms\n");
2975                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2976                         mutex_unlock(&priv->mutex);
2977                         return -EAGAIN;
2978                 }
2979                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2980
2981                 /* TODO: Audit driver for usage of these members and see
2982                  * if mac80211 deprecates them (priv->bssid looks like it
2983                  * shouldn't be there, but I haven't scanned the IBSS code
2984                  * to verify) - jpk */
2985                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2986
2987                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2988                         iwl4965_config_ap(priv);
2989                 else {
2990                         rc = iwl4965_commit_rxon(priv);
2991                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2992                                 iwl_rxon_add_station(
2993                                         priv, priv->active_rxon.bssid_addr, 1);
2994                 }
2995
2996         } else {
2997                 iwl_scan_cancel_timeout(priv, 100);
2998                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2999                 iwl4965_commit_rxon(priv);
3000         }
3001
3002  done:
3003         spin_lock_irqsave(&priv->lock, flags);
3004         if (!conf->ssid_len)
3005                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3006         else
3007                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3008
3009         priv->essid_len = conf->ssid_len;
3010         spin_unlock_irqrestore(&priv->lock, flags);
3011
3012         IWL_DEBUG_MAC80211("leave\n");
3013         mutex_unlock(&priv->mutex);
3014
3015         return 0;
3016 }
3017
3018 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3019                                  unsigned int changed_flags,
3020                                  unsigned int *total_flags,
3021                                  int mc_count, struct dev_addr_list *mc_list)
3022 {
3023         /*
3024          * XXX: dummy
3025          * see also iwl4965_connection_init_rx_config
3026          */
3027         struct iwl_priv *priv = hw->priv;
3028         int new_flags = 0;
3029         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3030                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3031                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3032                                            IEEE80211_IF_TYPE_MNTR,
3033                                            changed_flags, *total_flags);
3034                         /* queue work 'cuz mac80211 is holding a lock which
3035                          * prevents us from issuing (synchronous) f/w cmds */
3036                         queue_work(priv->workqueue, &priv->set_monitor);
3037                         new_flags &= FIF_PROMISC_IN_BSS |
3038                                      FIF_OTHER_BSS |
3039                                      FIF_ALLMULTI;
3040                 }
3041         }
3042         *total_flags = new_flags;
3043 }
3044
3045 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3046                                      struct ieee80211_if_init_conf *conf)
3047 {
3048         struct iwl_priv *priv = hw->priv;
3049
3050         IWL_DEBUG_MAC80211("enter\n");
3051
3052         mutex_lock(&priv->mutex);
3053
3054         if (iwl_is_ready_rf(priv)) {
3055                 iwl_scan_cancel_timeout(priv, 100);
3056                 cancel_delayed_work(&priv->post_associate);
3057                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3058                 iwl4965_commit_rxon(priv);
3059         }
3060         if (priv->vif == conf->vif) {
3061                 priv->vif = NULL;
3062                 memset(priv->bssid, 0, ETH_ALEN);
3063                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3064                 priv->essid_len = 0;
3065         }
3066         mutex_unlock(&priv->mutex);
3067
3068         IWL_DEBUG_MAC80211("leave\n");
3069
3070 }
3071
3072 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3073 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3074                                      struct ieee80211_vif *vif,
3075                                      struct ieee80211_bss_conf *bss_conf,
3076                                      u32 changes)
3077 {
3078         struct iwl_priv *priv = hw->priv;
3079
3080         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3081
3082         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3083                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3084                                    bss_conf->use_short_preamble);
3085                 if (bss_conf->use_short_preamble)
3086                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3087                 else
3088                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3089         }
3090
3091         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3092                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3093                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3094                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3095                 else
3096                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3097         }
3098
3099         if (changes & BSS_CHANGED_HT) {
3100                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3101                 iwl4965_ht_conf(priv, bss_conf);
3102                 iwl_set_rxon_chain(priv);
3103         }
3104
3105         if (changes & BSS_CHANGED_ASSOC) {
3106                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3107                 /* This should never happen as this function should
3108                  * never be called from interrupt context. */
3109                 if (WARN_ON_ONCE(in_interrupt()))
3110                         return;
3111                 if (bss_conf->assoc) {
3112                         priv->assoc_id = bss_conf->aid;
3113                         priv->beacon_int = bss_conf->beacon_int;
3114                         priv->timestamp = bss_conf->timestamp;
3115                         priv->assoc_capability = bss_conf->assoc_capability;
3116                         priv->next_scan_jiffies = jiffies +
3117                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3118                         mutex_lock(&priv->mutex);
3119                         iwl4965_post_associate(priv);
3120                         mutex_unlock(&priv->mutex);
3121                 } else {
3122                         priv->assoc_id = 0;
3123                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3124                 }
3125         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3126                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3127                         iwl_send_rxon_assoc(priv);
3128         }
3129
3130 }
3131
3132 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3133 {
3134         int rc = 0;
3135         unsigned long flags;
3136         struct iwl_priv *priv = hw->priv;
3137
3138         IWL_DEBUG_MAC80211("enter\n");
3139
3140         mutex_lock(&priv->mutex);
3141         spin_lock_irqsave(&priv->lock, flags);
3142
3143         if (!iwl_is_ready_rf(priv)) {
3144                 rc = -EIO;
3145                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3146                 goto out_unlock;
3147         }
3148
3149         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3150                 rc = -EIO;
3151                 IWL_ERROR("ERROR: APs don't scan\n");
3152                 goto out_unlock;
3153         }
3154
3155         /* we don't schedule scan within next_scan_jiffies period */
3156         if (priv->next_scan_jiffies &&
3157                         time_after(priv->next_scan_jiffies, jiffies)) {
3158                 rc = -EAGAIN;
3159                 goto out_unlock;
3160         }
3161         /* if we just finished scan ask for delay */
3162         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3163                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3164                 rc = -EAGAIN;
3165                 goto out_unlock;
3166         }
3167         if (len) {
3168                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3169                                iwl_escape_essid(ssid, len), (int)len);
3170
3171                 priv->one_direct_scan = 1;
3172                 priv->direct_ssid_len = (u8)
3173                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3174                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3175         } else
3176                 priv->one_direct_scan = 0;
3177
3178         rc = iwl_scan_initiate(priv);
3179
3180         IWL_DEBUG_MAC80211("leave\n");
3181
3182 out_unlock:
3183         spin_unlock_irqrestore(&priv->lock, flags);
3184         mutex_unlock(&priv->mutex);
3185
3186         return rc;
3187 }
3188
3189 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3190                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3191                         u32 iv32, u16 *phase1key)
3192 {
3193         struct iwl_priv *priv = hw->priv;
3194         u8 sta_id = IWL_INVALID_STATION;
3195         unsigned long flags;
3196         __le16 key_flags = 0;
3197         int i;
3198         DECLARE_MAC_BUF(mac);
3199
3200         IWL_DEBUG_MAC80211("enter\n");
3201
3202         sta_id = iwl_find_station(priv, addr);
3203         if (sta_id == IWL_INVALID_STATION) {
3204                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3205                                    print_mac(mac, addr));
3206                 return;
3207         }
3208
3209         iwl_scan_cancel_timeout(priv, 100);
3210
3211         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3212         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3213         key_flags &= ~STA_KEY_FLG_INVALID;
3214
3215         if (sta_id == priv->hw_params.bcast_sta_id)
3216                 key_flags |= STA_KEY_MULTICAST_MSK;
3217
3218         spin_lock_irqsave(&priv->sta_lock, flags);
3219
3220         priv->stations[sta_id].sta.key.key_flags = key_flags;
3221         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3222
3223         for (i = 0; i < 5; i++)
3224                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3225                         cpu_to_le16(phase1key[i]);
3226
3227         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3228         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3229
3230         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3231
3232         spin_unlock_irqrestore(&priv->sta_lock, flags);
3233
3234         IWL_DEBUG_MAC80211("leave\n");
3235 }
3236
3237 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3238                            const u8 *local_addr, const u8 *addr,
3239                            struct ieee80211_key_conf *key)
3240 {
3241         struct iwl_priv *priv = hw->priv;
3242         DECLARE_MAC_BUF(mac);
3243         int ret = 0;
3244         u8 sta_id = IWL_INVALID_STATION;
3245         u8 is_default_wep_key = 0;
3246
3247         IWL_DEBUG_MAC80211("enter\n");
3248
3249         if (priv->hw_params.sw_crypto) {
3250                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3251                 return -EOPNOTSUPP;
3252         }
3253
3254         if (is_zero_ether_addr(addr))
3255                 /* only support pairwise keys */
3256                 return -EOPNOTSUPP;
3257
3258         sta_id = iwl_find_station(priv, addr);
3259         if (sta_id == IWL_INVALID_STATION) {
3260                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3261                                    print_mac(mac, addr));
3262                 return -EINVAL;
3263
3264         }
3265
3266         mutex_lock(&priv->mutex);
3267         iwl_scan_cancel_timeout(priv, 100);
3268         mutex_unlock(&priv->mutex);
3269
3270         /* If we are getting WEP group key and we didn't receive any key mapping
3271          * so far, we are in legacy wep mode (group key only), otherwise we are
3272          * in 1X mode.
3273          * In legacy wep mode, we use another host command to the uCode */
3274         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3275                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3276                 if (cmd == SET_KEY)
3277                         is_default_wep_key = !priv->key_mapping_key;
3278                 else
3279                         is_default_wep_key =
3280                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3281         }
3282
3283         switch (cmd) {
3284         case SET_KEY:
3285                 if (is_default_wep_key)
3286                         ret = iwl_set_default_wep_key(priv, key);
3287                 else
3288                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3289
3290                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3291                 break;
3292         case DISABLE_KEY:
3293                 if (is_default_wep_key)
3294                         ret = iwl_remove_default_wep_key(priv, key);
3295                 else
3296                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3297
3298                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3299                 break;
3300         default:
3301                 ret = -EINVAL;
3302         }
3303
3304         IWL_DEBUG_MAC80211("leave\n");
3305
3306         return ret;
3307 }
3308
3309 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3310                            const struct ieee80211_tx_queue_params *params)
3311 {
3312         struct iwl_priv *priv = hw->priv;
3313         unsigned long flags;
3314         int q;
3315
3316         IWL_DEBUG_MAC80211("enter\n");
3317
3318         if (!iwl_is_ready_rf(priv)) {
3319                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3320                 return -EIO;
3321         }
3322
3323         if (queue >= AC_NUM) {
3324                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3325                 return 0;
3326         }
3327
3328         if (!priv->qos_data.qos_enable) {
3329                 priv->qos_data.qos_active = 0;
3330                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3331                 return 0;
3332         }
3333         q = AC_NUM - 1 - queue;
3334
3335         spin_lock_irqsave(&priv->lock, flags);
3336
3337         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3338         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3339         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3340         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3341                         cpu_to_le16((params->txop * 32));
3342
3343         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3344         priv->qos_data.qos_active = 1;
3345
3346         spin_unlock_irqrestore(&priv->lock, flags);
3347
3348         mutex_lock(&priv->mutex);
3349         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3350                 iwl4965_activate_qos(priv, 1);
3351         else if (priv->assoc_id && iwl_is_associated(priv))
3352                 iwl4965_activate_qos(priv, 0);
3353
3354         mutex_unlock(&priv->mutex);
3355
3356         IWL_DEBUG_MAC80211("leave\n");
3357         return 0;
3358 }
3359
3360 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3361                                 struct ieee80211_tx_queue_stats *stats)
3362 {
3363         struct iwl_priv *priv = hw->priv;
3364         int i, avail;
3365         struct iwl_tx_queue *txq;
3366         struct iwl_queue *q;
3367         unsigned long flags;
3368
3369         IWL_DEBUG_MAC80211("enter\n");
3370
3371         if (!iwl_is_ready_rf(priv)) {
3372                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3373                 return -EIO;
3374         }
3375
3376         spin_lock_irqsave(&priv->lock, flags);
3377
3378         for (i = 0; i < AC_NUM; i++) {
3379                 txq = &priv->txq[i];
3380                 q = &txq->q;
3381                 avail = iwl_queue_space(q);
3382
3383                 stats[i].len = q->n_window - avail;
3384                 stats[i].limit = q->n_window - q->high_mark;
3385                 stats[i].count = q->n_window;
3386
3387         }
3388         spin_unlock_irqrestore(&priv->lock, flags);
3389
3390         IWL_DEBUG_MAC80211("leave\n");
3391
3392         return 0;
3393 }
3394
3395 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3396                              struct ieee80211_low_level_stats *stats)
3397 {
3398         struct iwl_priv *priv = hw->priv;
3399
3400         priv = hw->priv;
3401         IWL_DEBUG_MAC80211("enter\n");
3402         IWL_DEBUG_MAC80211("leave\n");
3403
3404         return 0;
3405 }
3406
3407 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3408 {
3409         struct iwl_priv *priv;
3410
3411         priv = hw->priv;
3412         IWL_DEBUG_MAC80211("enter\n");
3413         IWL_DEBUG_MAC80211("leave\n");
3414
3415         return 0;
3416 }
3417
3418 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3419 {
3420         struct iwl_priv *priv = hw->priv;
3421         unsigned long flags;
3422
3423         mutex_lock(&priv->mutex);
3424         IWL_DEBUG_MAC80211("enter\n");
3425
3426         priv->lq_mngr.lq_ready = 0;
3427         spin_lock_irqsave(&priv->lock, flags);
3428         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3429         spin_unlock_irqrestore(&priv->lock, flags);
3430
3431         iwl_reset_qos(priv);
3432
3433         cancel_delayed_work(&priv->post_associate);
3434
3435         spin_lock_irqsave(&priv->lock, flags);
3436         priv->assoc_id = 0;
3437         priv->assoc_capability = 0;
3438         priv->assoc_station_added = 0;
3439
3440         /* new association get rid of ibss beacon skb */
3441         if (priv->ibss_beacon)
3442                 dev_kfree_skb(priv->ibss_beacon);
3443
3444         priv->ibss_beacon = NULL;
3445
3446         priv->beacon_int = priv->hw->conf.beacon_int;
3447         priv->timestamp = 0;
3448         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3449                 priv->beacon_int = 0;
3450
3451         spin_unlock_irqrestore(&priv->lock, flags);
3452
3453         if (!iwl_is_ready_rf(priv)) {
3454                 IWL_DEBUG_MAC80211("leave - not ready\n");
3455                 mutex_unlock(&priv->mutex);
3456                 return;
3457         }
3458
3459         /* we are restarting association process
3460          * clear RXON_FILTER_ASSOC_MSK bit
3461          */
3462         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3463                 iwl_scan_cancel_timeout(priv, 100);
3464                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3465                 iwl4965_commit_rxon(priv);
3466         }
3467
3468         iwl_power_update_mode(priv, 0);
3469
3470         /* Per mac80211.h: This is only used in IBSS mode... */
3471         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3472
3473                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3474                 mutex_unlock(&priv->mutex);
3475                 return;
3476         }
3477
3478         iwl4965_set_rate(priv);
3479
3480         mutex_unlock(&priv->mutex);
3481
3482         IWL_DEBUG_MAC80211("leave\n");
3483 }
3484
3485 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3486 {
3487         struct iwl_priv *priv = hw->priv;
3488         unsigned long flags;
3489
3490         mutex_lock(&priv->mutex);
3491         IWL_DEBUG_MAC80211("enter\n");
3492
3493         if (!iwl_is_ready_rf(priv)) {
3494                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3495                 mutex_unlock(&priv->mutex);
3496                 return -EIO;
3497         }
3498
3499         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3500                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3501                 mutex_unlock(&priv->mutex);
3502                 return -EIO;
3503         }
3504
3505         spin_lock_irqsave(&priv->lock, flags);
3506
3507         if (priv->ibss_beacon)
3508                 dev_kfree_skb(priv->ibss_beacon);
3509
3510         priv->ibss_beacon = skb;
3511
3512         priv->assoc_id = 0;
3513
3514         IWL_DEBUG_MAC80211("leave\n");
3515         spin_unlock_irqrestore(&priv->lock, flags);
3516
3517         iwl_reset_qos(priv);
3518
3519         iwl4965_post_associate(priv);
3520
3521         mutex_unlock(&priv->mutex);
3522
3523         return 0;
3524 }
3525
3526 /*****************************************************************************
3527  *
3528  * sysfs attributes
3529  *
3530  *****************************************************************************/
3531
3532 #ifdef CONFIG_IWLWIFI_DEBUG
3533
3534 /*
3535  * The following adds a new attribute to the sysfs representation
3536  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3537  * used for controlling the debug level.
3538  *
3539  * See the level definitions in iwl for details.
3540  */
3541
3542 static ssize_t show_debug_level(struct device *d,
3543                                 struct device_attribute *attr, char *buf)
3544 {
3545         struct iwl_priv *priv = d->driver_data;
3546
3547         return sprintf(buf, "0x%08X\n", priv->debug_level);
3548 }
3549 static ssize_t store_debug_level(struct device *d,
3550                                 struct device_attribute *attr,
3551                                  const char *buf, size_t count)
3552 {
3553         struct iwl_priv *priv = d->driver_data;
3554         char *p = (char *)buf;
3555         u32 val;
3556
3557         val = simple_strtoul(p, &p, 0);
3558         if (p == buf)
3559                 printk(KERN_INFO DRV_NAME
3560                        ": %s is not in hex or decimal form.\n", buf);
3561         else
3562                 priv->debug_level = val;
3563
3564         return strnlen(buf, count);
3565 }
3566
3567 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3568                         show_debug_level, store_debug_level);
3569
3570
3571 #endif /* CONFIG_IWLWIFI_DEBUG */
3572
3573
3574 static ssize_t show_version(struct device *d,
3575                                 struct device_attribute *attr, char *buf)
3576 {
3577         struct iwl_priv *priv = d->driver_data;
3578         struct iwl_alive_resp *palive = &priv->card_alive;
3579         ssize_t pos = 0;
3580         u16 eeprom_ver;
3581
3582         if (palive->is_valid)
3583                 pos += sprintf(buf + pos,
3584                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3585                                 "fw type: 0x%01X 0x%01X\n",
3586                                 palive->ucode_major, palive->ucode_minor,
3587                                 palive->sw_rev[0], palive->sw_rev[1],
3588                                 palive->ver_type, palive->ver_subtype);
3589         else
3590                 pos += sprintf(buf + pos, "fw not loaded\n");
3591
3592         if (priv->eeprom) {
3593                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3594                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3595                                  eeprom_ver);
3596         } else {
3597                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3598         }
3599
3600         return pos;
3601 }
3602
3603 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3604
3605 static ssize_t show_temperature(struct device *d,
3606                                 struct device_attribute *attr, char *buf)
3607 {
3608         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3609
3610         if (!iwl_is_alive(priv))
3611                 return -EAGAIN;
3612
3613         return sprintf(buf, "%d\n", priv->temperature);
3614 }
3615
3616 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3617
3618 static ssize_t show_rs_window(struct device *d,
3619                               struct device_attribute *attr,
3620                               char *buf)
3621 {
3622         struct iwl_priv *priv = d->driver_data;
3623         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3624 }
3625 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3626
3627 static ssize_t show_tx_power(struct device *d,
3628                              struct device_attribute *attr, char *buf)
3629 {
3630         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3631         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3632 }
3633
3634 static ssize_t store_tx_power(struct device *d,
3635                               struct device_attribute *attr,
3636                               const char *buf, size_t count)
3637 {
3638         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3639         char *p = (char *)buf;
3640         u32 val;
3641
3642         val = simple_strtoul(p, &p, 10);
3643         if (p == buf)
3644                 printk(KERN_INFO DRV_NAME
3645                        ": %s is not in decimal form.\n", buf);
3646         else
3647                 iwl_set_tx_power(priv, val, false);
3648
3649         return count;
3650 }
3651
3652 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3653
3654 static ssize_t show_flags(struct device *d,
3655                           struct device_attribute *attr, char *buf)
3656 {
3657         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3658
3659         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3660 }
3661
3662 static ssize_t store_flags(struct device *d,
3663                            struct device_attribute *attr,
3664                            const char *buf, size_t count)
3665 {
3666         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3667         u32 flags = simple_strtoul(buf, NULL, 0);
3668
3669         mutex_lock(&priv->mutex);
3670         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3671                 /* Cancel any currently running scans... */
3672                 if (iwl_scan_cancel_timeout(priv, 100))
3673                         IWL_WARNING("Could not cancel scan.\n");
3674                 else {
3675                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3676                                        flags);
3677                         priv->staging_rxon.flags = cpu_to_le32(flags);
3678                         iwl4965_commit_rxon(priv);
3679                 }
3680         }
3681         mutex_unlock(&priv->mutex);
3682
3683         return count;
3684 }
3685
3686 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3687
3688 static ssize_t show_filter_flags(struct device *d,
3689                                  struct device_attribute *attr, char *buf)
3690 {
3691         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3692
3693         return sprintf(buf, "0x%04X\n",
3694                 le32_to_cpu(priv->active_rxon.filter_flags));
3695 }
3696
3697 static ssize_t store_filter_flags(struct device *d,
3698                                   struct device_attribute *attr,
3699                                   const char *buf, size_t count)
3700 {
3701         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3703
3704         mutex_lock(&priv->mutex);
3705         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3706                 /* Cancel any currently running scans... */
3707                 if (iwl_scan_cancel_timeout(priv, 100))
3708                         IWL_WARNING("Could not cancel scan.\n");
3709                 else {
3710                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3711                                        "0x%04X\n", filter_flags);
3712                         priv->staging_rxon.filter_flags =
3713                                 cpu_to_le32(filter_flags);
3714                         iwl4965_commit_rxon(priv);
3715                 }
3716         }
3717         mutex_unlock(&priv->mutex);
3718
3719         return count;
3720 }
3721
3722 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3723                    store_filter_flags);
3724
3725 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3726
3727 static ssize_t show_measurement(struct device *d,
3728                                 struct device_attribute *attr, char *buf)
3729 {
3730         struct iwl_priv *priv = dev_get_drvdata(d);
3731         struct iwl4965_spectrum_notification measure_report;
3732         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3733         u8 *data = (u8 *) & measure_report;
3734         unsigned long flags;
3735
3736         spin_lock_irqsave(&priv->lock, flags);
3737         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3738                 spin_unlock_irqrestore(&priv->lock, flags);
3739                 return 0;
3740         }
3741         memcpy(&measure_report, &priv->measure_report, size);
3742         priv->measurement_status = 0;
3743         spin_unlock_irqrestore(&priv->lock, flags);
3744
3745         while (size && (PAGE_SIZE - len)) {
3746                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3747                                    PAGE_SIZE - len, 1);
3748                 len = strlen(buf);
3749                 if (PAGE_SIZE - len)
3750                         buf[len++] = '\n';
3751
3752                 ofs += 16;
3753                 size -= min(size, 16U);
3754         }
3755
3756         return len;
3757 }
3758
3759 static ssize_t store_measurement(struct device *d,
3760                                  struct device_attribute *attr,
3761                                  const char *buf, size_t count)
3762 {
3763         struct iwl_priv *priv = dev_get_drvdata(d);
3764         struct ieee80211_measurement_params params = {
3765                 .channel = le16_to_cpu(priv->active_rxon.channel),
3766                 .start_time = cpu_to_le64(priv->last_tsf),
3767                 .duration = cpu_to_le16(1),
3768         };
3769         u8 type = IWL_MEASURE_BASIC;
3770         u8 buffer[32];
3771         u8 channel;
3772
3773         if (count) {
3774                 char *p = buffer;
3775                 strncpy(buffer, buf, min(sizeof(buffer), count));
3776                 channel = simple_strtoul(p, NULL, 0);
3777                 if (channel)
3778                         params.channel = channel;
3779
3780                 p = buffer;
3781                 while (*p && *p != ' ')
3782                         p++;
3783                 if (*p)
3784                         type = simple_strtoul(p + 1, NULL, 0);
3785         }
3786
3787         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3788                        "channel %d (for '%s')\n", type, params.channel, buf);
3789         iwl4965_get_measurement(priv, &params, type);
3790
3791         return count;
3792 }
3793
3794 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3795                    show_measurement, store_measurement);
3796 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3797
3798 static ssize_t store_retry_rate(struct device *d,
3799                                 struct device_attribute *attr,
3800                                 const char *buf, size_t count)
3801 {
3802         struct iwl_priv *priv = dev_get_drvdata(d);
3803
3804         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3805         if (priv->retry_rate <= 0)
3806                 priv->retry_rate = 1;
3807
3808         return count;
3809 }
3810
3811 static ssize_t show_retry_rate(struct device *d,
3812                                struct device_attribute *attr, char *buf)
3813 {
3814         struct iwl_priv *priv = dev_get_drvdata(d);
3815         return sprintf(buf, "%d", priv->retry_rate);
3816 }
3817
3818 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3819                    store_retry_rate);
3820
3821 static ssize_t store_power_level(struct device *d,
3822                                  struct device_attribute *attr,
3823                                  const char *buf, size_t count)
3824 {
3825         struct iwl_priv *priv = dev_get_drvdata(d);
3826         int rc;
3827         int mode;
3828
3829         mode = simple_strtoul(buf, NULL, 0);
3830         mutex_lock(&priv->mutex);
3831
3832         if (!iwl_is_ready(priv)) {
3833                 rc = -EAGAIN;
3834                 goto out;
3835         }
3836
3837         rc = iwl_power_set_user_mode(priv, mode);
3838         if (rc) {
3839                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3840                 goto out;
3841         }
3842         rc = count;
3843
3844  out:
3845         mutex_unlock(&priv->mutex);
3846         return rc;
3847 }
3848
3849 #define MAX_WX_STRING 80
3850
3851 /* Values are in microsecond */
3852 static const s32 timeout_duration[] = {
3853         350000,
3854         250000,
3855         75000,
3856         37000,
3857         25000,
3858 };
3859 static const s32 period_duration[] = {
3860         400000,
3861         700000,
3862         1000000,
3863         1000000,
3864         1000000
3865 };
3866
3867 static ssize_t show_power_level(struct device *d,
3868                                 struct device_attribute *attr, char *buf)
3869 {
3870         struct iwl_priv *priv = dev_get_drvdata(d);
3871         int level = priv->power_data.power_mode;
3872         char *p = buf;
3873
3874         p += sprintf(p, "%d ", level);
3875         switch (level) {
3876         case IWL_POWER_MODE_CAM:
3877         case IWL_POWER_AC:
3878                 p += sprintf(p, "(AC)");
3879                 break;
3880         case IWL_POWER_BATTERY:
3881                 p += sprintf(p, "(BATTERY)");
3882                 break;
3883         default:
3884                 p += sprintf(p,
3885                              "(Timeout %dms, Period %dms)",
3886                              timeout_duration[level - 1] / 1000,
3887                              period_duration[level - 1] / 1000);
3888         }
3889 /*
3890         if (!(priv->power_mode & IWL_POWER_ENABLED))
3891                 p += sprintf(p, " OFF\n");
3892         else
3893                 p += sprintf(p, " \n");
3894 */
3895         p += sprintf(p, " \n");
3896         return (p - buf + 1);
3897 }
3898
3899 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3900                    store_power_level);
3901
3902 static ssize_t show_channels(struct device *d,
3903                              struct device_attribute *attr, char *buf)
3904 {
3905
3906         struct iwl_priv *priv = dev_get_drvdata(d);
3907         struct ieee80211_channel *channels = NULL;
3908         const struct ieee80211_supported_band *supp_band = NULL;
3909         int len = 0, i;
3910         int count = 0;
3911
3912         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3913                 return -EAGAIN;
3914
3915         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3916         channels = supp_band->channels;
3917         count = supp_band->n_channels;
3918
3919         len += sprintf(&buf[len],
3920                         "Displaying %d channels in 2.4GHz band "
3921                         "(802.11bg):\n", count);
3922
3923         for (i = 0; i < count; i++)
3924                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3925                                 ieee80211_frequency_to_channel(
3926                                 channels[i].center_freq),
3927                                 channels[i].max_power,
3928                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3929                                 " (IEEE 802.11h required)" : "",
3930                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3931                                 || (channels[i].flags &
3932                                 IEEE80211_CHAN_RADAR)) ? "" :
3933                                 ", IBSS",
3934                                 channels[i].flags &
3935                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3936                                 "passive only" : "active/passive");
3937
3938         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3939         channels = supp_band->channels;
3940         count = supp_band->n_channels;
3941
3942         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3943                         "(802.11a):\n", count);
3944
3945         for (i = 0; i < count; i++)
3946                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3947                                 ieee80211_frequency_to_channel(
3948                                 channels[i].center_freq),
3949                                 channels[i].max_power,
3950                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3951                                 " (IEEE 802.11h required)" : "",
3952                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3953                                 || (channels[i].flags &
3954                                 IEEE80211_CHAN_RADAR)) ? "" :
3955                                 ", IBSS",
3956                                 channels[i].flags &
3957                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3958                                 "passive only" : "active/passive");
3959
3960         return len;
3961 }
3962
3963 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3964
3965 static ssize_t show_statistics(struct device *d,
3966                                struct device_attribute *attr, char *buf)
3967 {
3968         struct iwl_priv *priv = dev_get_drvdata(d);
3969         u32 size = sizeof(struct iwl_notif_statistics);
3970         u32 len = 0, ofs = 0;
3971         u8 *data = (u8 *) & priv->statistics;
3972         int rc = 0;
3973
3974         if (!iwl_is_alive(priv))
3975                 return -EAGAIN;
3976
3977         mutex_lock(&priv->mutex);
3978         rc = iwl_send_statistics_request(priv, 0);
3979         mutex_unlock(&priv->mutex);
3980
3981         if (rc) {
3982                 len = sprintf(buf,
3983                               "Error sending statistics request: 0x%08X\n", rc);
3984                 return len;
3985         }
3986
3987         while (size && (PAGE_SIZE - len)) {
3988                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3989                                    PAGE_SIZE - len, 1);
3990                 len = strlen(buf);
3991                 if (PAGE_SIZE - len)
3992                         buf[len++] = '\n';
3993
3994                 ofs += 16;
3995                 size -= min(size, 16U);
3996         }
3997
3998         return len;
3999 }
4000
4001 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4002
4003 static ssize_t show_status(struct device *d,
4004                            struct device_attribute *attr, char *buf)
4005 {
4006         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4007         if (!iwl_is_alive(priv))
4008                 return -EAGAIN;
4009         return sprintf(buf, "0x%08x\n", (int)priv->status);
4010 }
4011
4012 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4013
4014 /*****************************************************************************
4015  *
4016  * driver setup and teardown
4017  *
4018  *****************************************************************************/
4019
4020 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4021 {
4022         priv->workqueue = create_workqueue(DRV_NAME);
4023
4024         init_waitqueue_head(&priv->wait_command_queue);
4025
4026         INIT_WORK(&priv->up, iwl4965_bg_up);
4027         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4028         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4029         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4030         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4031         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4032         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4033         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4034         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4035         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4036
4037         /* FIXME : remove when resolved PENDING */
4038         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4039         iwl_setup_scan_deferred_work(priv);
4040
4041         if (priv->cfg->ops->lib->setup_deferred_work)
4042                 priv->cfg->ops->lib->setup_deferred_work(priv);
4043
4044         init_timer(&priv->statistics_periodic);
4045         priv->statistics_periodic.data = (unsigned long)priv;
4046         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4047
4048         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4049                      iwl4965_irq_tasklet, (unsigned long)priv);
4050 }
4051
4052 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4053 {
4054         if (priv->cfg->ops->lib->cancel_deferred_work)
4055                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4056
4057         cancel_delayed_work_sync(&priv->init_alive_start);
4058         cancel_delayed_work(&priv->scan_check);
4059         cancel_delayed_work(&priv->alive_start);
4060         cancel_delayed_work(&priv->post_associate);
4061         cancel_work_sync(&priv->beacon_update);
4062         del_timer_sync(&priv->statistics_periodic);
4063 }
4064
4065 static struct attribute *iwl4965_sysfs_entries[] = {
4066         &dev_attr_channels.attr,
4067         &dev_attr_flags.attr,
4068         &dev_attr_filter_flags.attr,
4069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4070         &dev_attr_measurement.attr,
4071 #endif
4072         &dev_attr_power_level.attr,
4073         &dev_attr_retry_rate.attr,
4074         &dev_attr_rs_window.attr,
4075         &dev_attr_statistics.attr,
4076         &dev_attr_status.attr,
4077         &dev_attr_temperature.attr,
4078         &dev_attr_tx_power.attr,
4079 #ifdef CONFIG_IWLWIFI_DEBUG
4080         &dev_attr_debug_level.attr,
4081 #endif
4082         &dev_attr_version.attr,
4083
4084         NULL
4085 };
4086
4087 static struct attribute_group iwl4965_attribute_group = {
4088         .name = NULL,           /* put in device directory */
4089         .attrs = iwl4965_sysfs_entries,
4090 };
4091
4092 static struct ieee80211_ops iwl4965_hw_ops = {
4093         .tx = iwl4965_mac_tx,
4094         .start = iwl4965_mac_start,
4095         .stop = iwl4965_mac_stop,
4096         .add_interface = iwl4965_mac_add_interface,
4097         .remove_interface = iwl4965_mac_remove_interface,
4098         .config = iwl4965_mac_config,
4099         .config_interface = iwl4965_mac_config_interface,
4100         .configure_filter = iwl4965_configure_filter,
4101         .set_key = iwl4965_mac_set_key,
4102         .update_tkip_key = iwl4965_mac_update_tkip_key,
4103         .get_stats = iwl4965_mac_get_stats,
4104         .get_tx_stats = iwl4965_mac_get_tx_stats,
4105         .conf_tx = iwl4965_mac_conf_tx,
4106         .get_tsf = iwl4965_mac_get_tsf,
4107         .reset_tsf = iwl4965_mac_reset_tsf,
4108         .beacon_update = iwl4965_mac_beacon_update,
4109         .bss_info_changed = iwl4965_bss_info_changed,
4110         .ampdu_action = iwl4965_mac_ampdu_action,
4111         .hw_scan = iwl4965_mac_hw_scan
4112 };
4113
4114 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4115 {
4116         int err = 0;
4117         struct iwl_priv *priv;
4118         struct ieee80211_hw *hw;
4119         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4120         unsigned long flags;
4121         DECLARE_MAC_BUF(mac);
4122
4123         /************************
4124          * 1. Allocating HW data
4125          ************************/
4126
4127         /* Disabling hardware scan means that mac80211 will perform scans
4128          * "the hard way", rather than using device's scan. */
4129         if (cfg->mod_params->disable_hw_scan) {
4130                 if (cfg->mod_params->debug & IWL_DL_INFO)
4131                         dev_printk(KERN_DEBUG, &(pdev->dev),
4132                                    "Disabling hw_scan\n");
4133                 iwl4965_hw_ops.hw_scan = NULL;
4134         }
4135
4136         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4137         if (!hw) {
4138                 err = -ENOMEM;
4139                 goto out;
4140         }
4141         priv = hw->priv;
4142         /* At this point both hw and priv are allocated. */
4143
4144         SET_IEEE80211_DEV(hw, &pdev->dev);
4145
4146         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4147         priv->cfg = cfg;
4148         priv->pci_dev = pdev;
4149
4150 #ifdef CONFIG_IWLWIFI_DEBUG
4151         priv->debug_level = priv->cfg->mod_params->debug;
4152         atomic_set(&priv->restrict_refcnt, 0);
4153 #endif
4154
4155         /**************************
4156          * 2. Initializing PCI bus
4157          **************************/
4158         if (pci_enable_device(pdev)) {
4159                 err = -ENODEV;
4160                 goto out_ieee80211_free_hw;
4161         }
4162
4163         pci_set_master(pdev);
4164
4165         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4166         if (!err)
4167                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4168         if (err) {
4169                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4170                 if (!err)
4171                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4172                 /* both attempts failed: */
4173                 if (err) {
4174                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4175                                 DRV_NAME);
4176                         goto out_pci_disable_device;
4177                 }
4178         }
4179
4180         err = pci_request_regions(pdev, DRV_NAME);
4181         if (err)
4182                 goto out_pci_disable_device;
4183
4184         pci_set_drvdata(pdev, priv);
4185
4186         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4187          * PCI Tx retries from interfering with C3 CPU state */
4188         pci_write_config_byte(pdev, 0x41, 0x00);
4189
4190         /***********************
4191          * 3. Read REV register
4192          ***********************/
4193         priv->hw_base = pci_iomap(pdev, 0, 0);
4194         if (!priv->hw_base) {
4195                 err = -ENODEV;
4196                 goto out_pci_release_regions;
4197         }
4198
4199         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4200                 (unsigned long long) pci_resource_len(pdev, 0));
4201         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4202
4203         iwl_hw_detect(priv);
4204         printk(KERN_INFO DRV_NAME
4205                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4206                 priv->cfg->name, priv->hw_rev);
4207
4208         /* amp init */
4209         err = priv->cfg->ops->lib->apm_ops.init(priv);
4210         if (err < 0) {
4211                 IWL_DEBUG_INFO("Failed to init APMG\n");
4212                 goto out_iounmap;
4213         }
4214         /*****************
4215          * 4. Read EEPROM
4216          *****************/
4217         /* Read the EEPROM */
4218         err = iwl_eeprom_init(priv);
4219         if (err) {
4220                 IWL_ERROR("Unable to init EEPROM\n");
4221                 goto out_iounmap;
4222         }
4223         err = iwl_eeprom_check_version(priv);
4224         if (err)
4225                 goto out_iounmap;
4226
4227         /* extract MAC Address */
4228         iwl_eeprom_get_mac(priv, priv->mac_addr);
4229         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4230         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4231
4232         /************************
4233          * 5. Setup HW constants
4234          ************************/
4235         /* Device-specific setup */
4236         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4237                 IWL_ERROR("failed to set hw parameters\n");
4238                 goto out_free_eeprom;
4239         }
4240
4241         /*******************
4242          * 6. Setup priv
4243          *******************/
4244
4245         err = iwl_init_drv(priv);
4246         if (err)
4247                 goto out_free_eeprom;
4248         /* At this point both hw and priv are initialized. */
4249
4250         /**********************************
4251          * 7. Initialize module parameters
4252          **********************************/
4253
4254         /* Disable radio (SW RF KILL) via parameter when loading driver */
4255         if (priv->cfg->mod_params->disable) {
4256                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4257                 IWL_DEBUG_INFO("Radio disabled.\n");
4258         }
4259
4260         /********************
4261          * 8. Setup services
4262          ********************/
4263         spin_lock_irqsave(&priv->lock, flags);
4264         iwl4965_disable_interrupts(priv);
4265         spin_unlock_irqrestore(&priv->lock, flags);
4266
4267         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4268         if (err) {
4269                 IWL_ERROR("failed to create sysfs device attributes\n");
4270                 goto out_uninit_drv;
4271         }
4272
4273
4274         iwl_setup_deferred_work(priv);
4275         iwl4965_setup_rx_handlers(priv);
4276
4277         /********************
4278          * 9. Conclude
4279          ********************/
4280         pci_save_state(pdev);
4281         pci_disable_device(pdev);
4282
4283         /**********************************
4284          * 10. Setup and register mac80211
4285          **********************************/
4286
4287         err = iwl_setup_mac(priv);
4288         if (err)
4289                 goto out_remove_sysfs;
4290
4291         err = iwl_dbgfs_register(priv, DRV_NAME);
4292         if (err)
4293                 IWL_ERROR("failed to create debugfs files\n");
4294
4295         err = iwl_rfkill_init(priv);
4296         if (err)
4297                 IWL_ERROR("Unable to initialize RFKILL system. "
4298                                   "Ignoring error: %d\n", err);
4299         iwl_power_initialize(priv);
4300         return 0;
4301
4302  out_remove_sysfs:
4303         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4304  out_uninit_drv:
4305         iwl_uninit_drv(priv);
4306  out_free_eeprom:
4307         iwl_eeprom_free(priv);
4308  out_iounmap:
4309         pci_iounmap(pdev, priv->hw_base);
4310  out_pci_release_regions:
4311         pci_release_regions(pdev);
4312         pci_set_drvdata(pdev, NULL);
4313  out_pci_disable_device:
4314         pci_disable_device(pdev);
4315  out_ieee80211_free_hw:
4316         ieee80211_free_hw(priv->hw);
4317  out:
4318         return err;
4319 }
4320
4321 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4322 {
4323         struct iwl_priv *priv = pci_get_drvdata(pdev);
4324         unsigned long flags;
4325
4326         if (!priv)
4327                 return;
4328
4329         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4330
4331         iwl_dbgfs_unregister(priv);
4332         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4333
4334         if (priv->mac80211_registered) {
4335                 ieee80211_unregister_hw(priv->hw);
4336                 priv->mac80211_registered = 0;
4337         }
4338
4339         set_bit(STATUS_EXIT_PENDING, &priv->status);
4340
4341         iwl4965_down(priv);
4342
4343         /* make sure we flush any pending irq or
4344          * tasklet for the driver
4345          */
4346         spin_lock_irqsave(&priv->lock, flags);
4347         iwl4965_disable_interrupts(priv);
4348         spin_unlock_irqrestore(&priv->lock, flags);
4349
4350         iwl_synchronize_irq(priv);
4351
4352         iwl_rfkill_unregister(priv);
4353         iwl4965_dealloc_ucode_pci(priv);
4354
4355         if (priv->rxq.bd)
4356                 iwl_rx_queue_free(priv, &priv->rxq);
4357         iwl_hw_txq_ctx_free(priv);
4358
4359         iwl_clear_stations_table(priv);
4360         iwl_eeprom_free(priv);
4361
4362
4363         /*netif_stop_queue(dev); */
4364         flush_workqueue(priv->workqueue);
4365
4366         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4367          * priv->workqueue... so we can't take down the workqueue
4368          * until now... */
4369         destroy_workqueue(priv->workqueue);
4370         priv->workqueue = NULL;
4371
4372         pci_iounmap(pdev, priv->hw_base);
4373         pci_release_regions(pdev);
4374         pci_disable_device(pdev);
4375         pci_set_drvdata(pdev, NULL);
4376
4377         iwl_uninit_drv(priv);
4378
4379         if (priv->ibss_beacon)
4380                 dev_kfree_skb(priv->ibss_beacon);
4381
4382         ieee80211_free_hw(priv->hw);
4383 }
4384
4385 #ifdef CONFIG_PM
4386
4387 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4388 {
4389         struct iwl_priv *priv = pci_get_drvdata(pdev);
4390
4391         if (priv->is_open) {
4392                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4393                 iwl4965_mac_stop(priv->hw);
4394                 priv->is_open = 1;
4395         }
4396
4397         pci_set_power_state(pdev, PCI_D3hot);
4398
4399         return 0;
4400 }
4401
4402 static int iwl4965_pci_resume(struct pci_dev *pdev)
4403 {
4404         struct iwl_priv *priv = pci_get_drvdata(pdev);
4405
4406         pci_set_power_state(pdev, PCI_D0);
4407
4408         if (priv->is_open)
4409                 iwl4965_mac_start(priv->hw);
4410
4411         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4412         return 0;
4413 }
4414
4415 #endif /* CONFIG_PM */
4416
4417 /*****************************************************************************
4418  *
4419  * driver and module entry point
4420  *
4421  *****************************************************************************/
4422
4423 /* Hardware specific file defines the PCI IDs table for that hardware module */
4424 static struct pci_device_id iwl_hw_card_ids[] = {
4425         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4426         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4427 #ifdef CONFIG_IWL5000
4428         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4429         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4430         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4431 #endif /* CONFIG_IWL5000 */
4432         {0}
4433 };
4434 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4435
4436 static struct pci_driver iwl_driver = {
4437         .name = DRV_NAME,
4438         .id_table = iwl_hw_card_ids,
4439         .probe = iwl4965_pci_probe,
4440         .remove = __devexit_p(iwl4965_pci_remove),
4441 #ifdef CONFIG_PM
4442         .suspend = iwl4965_pci_suspend,
4443         .resume = iwl4965_pci_resume,
4444 #endif
4445 };
4446
4447 static int __init iwl4965_init(void)
4448 {
4449
4450         int ret;
4451         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4452         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4453
4454         ret = iwl4965_rate_control_register();
4455         if (ret) {
4456                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4457                 return ret;
4458         }
4459
4460         ret = pci_register_driver(&iwl_driver);
4461         if (ret) {
4462                 IWL_ERROR("Unable to initialize PCI module\n");
4463                 goto error_register;
4464         }
4465
4466         return ret;
4467
4468 error_register:
4469         iwl4965_rate_control_unregister();
4470         return ret;
4471 }
4472
4473 static void __exit iwl4965_exit(void)
4474 {
4475         pci_unregister_driver(&iwl_driver);
4476         iwl4965_rate_control_unregister();
4477 }
4478
4479 module_exit(iwl4965_exit);
4480 module_init(iwl4965_init);