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) {
 348                 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 349                         ret = iwl_rxon_add_station(priv,
 350                                            priv->active_rxon.bssid_addr, 1);
 351                         if (ret == IWL_INVALID_STATION) {
 352                                 IWL_ERROR("Error adding AP address for TX.\n");
 353                                 return -EIO;
 354                         }
 355                         priv->assoc_station_added = 1;
 356                         if (priv->default_wep_key &&
 357                             iwl_send_static_wepkey_cmd(priv, 0))
 358                                 IWL_ERROR("Could not send WEP static key.\n");
 359                 }
 360
 361                 /* Apply the new configuration
 362                  * RXON assoc doesn't clear the station table in uCode,
 363                  */
 364                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 365                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 366                 if (ret) {
 367                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 368                         return ret;
 369                 }
 370                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 371         }
 372
 373         return 0;
 374 }
 375
 376 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 377 {
 378
 379         iwl_set_rxon_chain(priv);
 380         iwl4965_commit_rxon(priv);
 381 }
 382
 383 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 384 {
 385         struct iwl4965_bt_cmd bt_cmd = {
 386                 .flags = 3,
 387                 .lead_time = 0xAA,
 388                 .max_kill = 1,
 389                 .kill_ack_mask = 0,
 390                 .kill_cts_mask = 0,
 391         };
 392
 393         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 394                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 395 }
 396
 397 static void iwl_clear_free_frames(struct iwl_priv *priv)
 398 {
 399         struct list_head *element;
 400
 401         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 402                        priv->frames_count);
 403
 404         while (!list_empty(&priv->free_frames)) {
 405                 element = priv->free_frames.next;
 406                 list_del(element);
 407                 kfree(list_entry(element, struct iwl_frame, list));
 408                 priv->frames_count--;
 409         }
 410
 411         if (priv->frames_count) {
 412                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 413                             priv->frames_count);
 414                 priv->frames_count = 0;
 415         }
 416 }
 417
 418 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 419 {
 420         struct iwl_frame *frame;
 421         struct list_head *element;
 422         if (list_empty(&priv->free_frames)) {
 423                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 424                 if (!frame) {
 425                         IWL_ERROR("Could not allocate frame!\n");
 426                         return NULL;
 427                 }
 428
 429                 priv->frames_count++;
 430                 return frame;
 431         }
 432
 433         element = priv->free_frames.next;
 434         list_del(element);
 435         return list_entry(element, struct iwl_frame, list);
 436 }
 437
 438 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 439 {
 440         memset(frame, 0, sizeof(*frame));
 441         list_add(&frame->list, &priv->free_frames);
 442 }
 443
 444 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 445                                 struct ieee80211_hdr *hdr,
 446                                 const u8 *dest, int left)
 447 {
 448
 449         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 450             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 451              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 452                 return 0;
 453
 454         if (priv->ibss_beacon->len > left)
 455                 return 0;
 456
 457         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 458
 459         return priv->ibss_beacon->len;
 460 }
 461
 462 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 463 {
 464         int i;
 465         int rate_mask;
 466
 467         /* Set rate mask*/
 468         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 469                 rate_mask = priv->active_rate_basic & 0xF;
 470         else
 471                 rate_mask = priv->active_rate_basic & 0xFF0;
 472
 473         /* Find lowest valid rate */
 474         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 475                                         i = iwl_rates[i].next_ieee) {
 476                 if (rate_mask & (1 << i))
 477                         return iwl_rates[i].plcp;
 478         }
 479
 480         /* No valid rate was found. Assign the lowest one */
 481         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 482                 return IWL_RATE_1M_PLCP;
 483         else
 484                 return IWL_RATE_6M_PLCP;
 485 }
 486
 487 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 488 {
 489         struct iwl_frame *frame;
 490         unsigned int frame_size;
 491         int rc;
 492         u8 rate;
 493
 494         frame = iwl_get_free_frame(priv);
 495
 496         if (!frame) {
 497                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 498                           "command.\n");
 499                 return -ENOMEM;
 500         }
 501
 502         rate = iwl4965_rate_get_lowest_plcp(priv);
 503
 504         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 505
 506         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 507                               &frame->u.cmd[0]);
 508
 509         iwl_free_frame(priv, frame);
 510
 511         return rc;
 512 }
 513
 514 /******************************************************************************
 515  *
 516  * Misc. internal state and helper functions
 517  *
 518  ******************************************************************************/
 519
 520 static void iwl4965_ht_conf(struct iwl_priv *priv,
 521                             struct ieee80211_bss_conf *bss_conf)
 522 {
 523         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 524         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 525         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 526
 527         IWL_DEBUG_MAC80211("enter: \n");
 528
 529         iwl_conf->is_ht = bss_conf->assoc_ht;
 530
 531         if (!iwl_conf->is_ht)
 532                 return;
 533
 534         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 535
 536         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 537                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 538         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 539                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 540
 541         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 542         iwl_conf->max_amsdu_size =
 543                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 544
 545         iwl_conf->supported_chan_width =
 546                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 547         iwl_conf->extension_chan_offset =
 548                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 549         /* If no above or below channel supplied disable FAT channel */
 550         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 551             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 552                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 553                 iwl_conf->supported_chan_width = 0;
 554         }
 555
 556         iwl_conf->tx_mimo_ps_mode =
 557                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 558         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 559
 560         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 561         iwl_conf->tx_chan_width =
 562                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 563         iwl_conf->ht_protection =
 564                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 565         iwl_conf->non_GF_STA_present =
 566                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 567
 568         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 569         IWL_DEBUG_MAC80211("leave\n");
 570 }
 571
 572 /*
 573  * QoS  support
 574 */
 575 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 576                                        struct iwl4965_qosparam_cmd *qos)
 577 {
 578
 579         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 580                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 581 }
 582
 583 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 584 {
 585         unsigned long flags;
 586
 587         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 588                 return;
 589
 590         if (!priv->qos_data.qos_enable)
 591                 return;
 592
 593         spin_lock_irqsave(&priv->lock, flags);
 594         priv->qos_data.def_qos_parm.qos_flags = 0;
 595
 596         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 597             !priv->qos_data.qos_cap.q_AP.txop_request)
 598                 priv->qos_data.def_qos_parm.qos_flags |=
 599                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 600         if (priv->qos_data.qos_active)
 601                 priv->qos_data.def_qos_parm.qos_flags |=
 602                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 603
 604         if (priv->current_ht_config.is_ht)
 605                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 606
 607         spin_unlock_irqrestore(&priv->lock, flags);
 608
 609         if (force || iwl_is_associated(priv)) {
 610                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 611                                 priv->qos_data.qos_active,
 612                                 priv->qos_data.def_qos_parm.qos_flags);
 613
 614                 iwl4965_send_qos_params_command(priv,
 615                                 &(priv->qos_data.def_qos_parm));
 616         }
 617 }
 618
 619 #define MAX_UCODE_BEACON_INTERVAL       4096
 620 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 621
 622 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 623 {
 624         u16 new_val = 0;
 625         u16 beacon_factor = 0;
 626
 627         beacon_factor =
 628             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 629                 / MAX_UCODE_BEACON_INTERVAL;
 630         new_val = beacon_val / beacon_factor;
 631
 632         return cpu_to_le16(new_val);
 633 }
 634
 635 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 636 {
 637         u64 interval_tm_unit;
 638         u64 tsf, result;
 639         unsigned long flags;
 640         struct ieee80211_conf *conf = NULL;
 641         u16 beacon_int = 0;
 642
 643         conf = ieee80211_get_hw_conf(priv->hw);
 644
 645         spin_lock_irqsave(&priv->lock, flags);
 646         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 647         priv->rxon_timing.timestamp.dw[0] =
 648                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 649
 650         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 651
 652         tsf = priv->timestamp;
 653
 654         beacon_int = priv->beacon_int;
 655         spin_unlock_irqrestore(&priv->lock, flags);
 656
 657         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 658                 if (beacon_int == 0) {
 659                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 660                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 661                 } else {
 662                         priv->rxon_timing.beacon_interval =
 663                                 cpu_to_le16(beacon_int);
 664                         priv->rxon_timing.beacon_interval =
 665                             iwl4965_adjust_beacon_interval(
 666                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 667                 }
 668
 669                 priv->rxon_timing.atim_window = 0;
 670         } else {
 671                 priv->rxon_timing.beacon_interval =
 672                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 673                 /* TODO: we need to get atim_window from upper stack
 674                  * for now we set to 0 */
 675                 priv->rxon_timing.atim_window = 0;
 676         }
 677
 678         interval_tm_unit =
 679                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 680         result = do_div(tsf, interval_tm_unit);
 681         priv->rxon_timing.beacon_init_val =
 682             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 683
 684         IWL_DEBUG_ASSOC
 685             ("beacon interval %d beacon timer %d beacon tim %d\n",
 686                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 687                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 688                 le16_to_cpu(priv->rxon_timing.atim_window));
 689 }
 690
 691 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 692                                    enum ieee80211_band band)
 693 {
 694         if (band == IEEE80211_BAND_5GHZ) {
 695                 priv->staging_rxon.flags &=
 696                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 697                       | RXON_FLG_CCK_MSK);
 698                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 699         } else {
 700                 /* Copied from iwl4965_post_associate() */
 701                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 702                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 703                 else
 704                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 705
 706                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 707                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 708
 709                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 710                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 711                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 712         }
 713 }
 714
 715 /*
 716  * initialize rxon structure with default values from eeprom
 717  */
 718 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 719 {
 720         const struct iwl_channel_info *ch_info;
 721
 722         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 723
 724         switch (priv->iw_mode) {
 725         case IEEE80211_IF_TYPE_AP:
 726                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 727                 break;
 728
 729         case IEEE80211_IF_TYPE_STA:
 730                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 731                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 732                 break;
 733
 734         case IEEE80211_IF_TYPE_IBSS:
 735                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 736                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 737                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 738                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 739                 break;
 740
 741         case IEEE80211_IF_TYPE_MNTR:
 742                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 743                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 744                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 745                 break;
 746         default:
 747                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 748                 break;
 749         }
 750
 751 #if 0
 752         /* TODO:  Figure out when short_preamble would be set and cache from
 753          * that */
 754         if (!hw_to_local(priv->hw)->short_preamble)
 755                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 756         else
 757                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 758 #endif
 759
 760         ch_info = iwl_get_channel_info(priv, priv->band,
 761                                        le16_to_cpu(priv->staging_rxon.channel));
 762
 763         if (!ch_info)
 764                 ch_info = &priv->channel_info[0];
 765
 766         /*
 767          * in some case A channels are all non IBSS
 768          * in this case force B/G channel
 769          */
 770         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 771             !(is_channel_ibss(ch_info)))
 772                 ch_info = &priv->channel_info[0];
 773
 774         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 775         priv->band = ch_info->band;
 776
 777         iwl_set_flags_for_band(priv, priv->band);
 778
 779         priv->staging_rxon.ofdm_basic_rates =
 780             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 781         priv->staging_rxon.cck_basic_rates =
 782             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 783
 784         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 785                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 786         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 787         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 788         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 789         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 790         iwl_set_rxon_chain(priv);
 791 }
 792
 793 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 794 {
 795         priv->iw_mode = mode;
 796
 797         /* init channel/phymode to values given at driver init */
 798         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 799
 800         iwl4965_connection_init_rx_config(priv);
 801         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 802
 803         iwl_clear_stations_table(priv);
 804
 805         /* dont commit rxon if rf-kill is on*/
 806         if (!iwl_is_ready_rf(priv))
 807                 return -EAGAIN;
 808
 809         cancel_delayed_work(&priv->scan_check);
 810         if (iwl_scan_cancel_timeout(priv, 100)) {
 811                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 812                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 813                 return -EAGAIN;
 814         }
 815
 816         iwl4965_commit_rxon(priv);
 817
 818         return 0;
 819 }
 820
 821 static void iwl4965_set_rate(struct iwl_priv *priv)
 822 {
 823         const struct ieee80211_supported_band *hw = NULL;
 824         struct ieee80211_rate *rate;
 825         int i;
 826
 827         hw = iwl_get_hw_mode(priv, priv->band);
 828         if (!hw) {
 829                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 830                 return;
 831         }
 832
 833         priv->active_rate = 0;
 834         priv->active_rate_basic = 0;
 835
 836         for (i = 0; i < hw->n_bitrates; i++) {
 837                 rate = &(hw->bitrates[i]);
 838                 if (rate->hw_value < IWL_RATE_COUNT)
 839                         priv->active_rate |= (1 << rate->hw_value);
 840         }
 841
 842         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 843                        priv->active_rate, priv->active_rate_basic);
 844
 845         /*
 846          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 847          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 848          * OFDM
 849          */
 850         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 851                 priv->staging_rxon.cck_basic_rates =
 852                     ((priv->active_rate_basic &
 853                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 854         else
 855                 priv->staging_rxon.cck_basic_rates =
 856                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 857
 858         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 859                 priv->staging_rxon.ofdm_basic_rates =
 860                     ((priv->active_rate_basic &
 861                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 862                       IWL_FIRST_OFDM_RATE) & 0xFF;
 863         else
 864                 priv->staging_rxon.ofdm_basic_rates =
 865                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 866 }
 867
 868 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 869
 870 #include "iwl-spectrum.h"
 871
 872 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 873 #define BEACON_TIME_MASK_HIGH   0xFF000000
 874 #define TIME_UNIT               1024
 875
 876 /*
 877  * extended beacon time format
 878  * time in usec will be changed into a 32-bit value in 8:24 format
 879  * the high 1 byte is the beacon counts
 880  * the lower 3 bytes is the time in usec within one beacon interval
 881  */
 882
 883 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 884 {
 885         u32 quot;
 886         u32 rem;
 887         u32 interval = beacon_interval * 1024;
 888
 889         if (!interval || !usec)
 890                 return 0;
 891
 892         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 893         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 894
 895         return (quot << 24) + rem;
 896 }
 897
 898 /* base is usually what we get from ucode with each received frame,
 899  * the same as HW timer counter counting down
 900  */
 901
 902 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 903 {
 904         u32 base_low = base & BEACON_TIME_MASK_LOW;
 905         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 906         u32 interval = beacon_interval * TIME_UNIT;
 907         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 908             (addon & BEACON_TIME_MASK_HIGH);
 909
 910         if (base_low > addon_low)
 911                 res += base_low - addon_low;
 912         else if (base_low < addon_low) {
 913                 res += interval + base_low - addon_low;
 914                 res += (1 << 24);
 915         } else
 916                 res += (1 << 24);
 917
 918         return cpu_to_le32(res);
 919 }
 920
 921 static int iwl4965_get_measurement(struct iwl_priv *priv,
 922                                struct ieee80211_measurement_params *params,
 923                                u8 type)
 924 {
 925         struct iwl4965_spectrum_cmd spectrum;
 926         struct iwl_rx_packet *res;
 927         struct iwl_host_cmd cmd = {
 928                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 929                 .data = (void *)&spectrum,
 930                 .meta.flags = CMD_WANT_SKB,
 931         };
 932         u32 add_time = le64_to_cpu(params->start_time);
 933         int rc;
 934         int spectrum_resp_status;
 935         int duration = le16_to_cpu(params->duration);
 936
 937         if (iwl_is_associated(priv))
 938                 add_time =
 939                     iwl4965_usecs_to_beacons(
 940                         le64_to_cpu(params->start_time) - priv->last_tsf,
 941                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 942
 943         memset(&spectrum, 0, sizeof(spectrum));
 944
 945         spectrum.channel_count = cpu_to_le16(1);
 946         spectrum.flags =
 947             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 948         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 949         cmd.len = sizeof(spectrum);
 950         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 951
 952         if (iwl_is_associated(priv))
 953                 spectrum.start_time =
 954                     iwl4965_add_beacon_time(priv->last_beacon_time,
 955                                 add_time,
 956                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 957         else
 958                 spectrum.start_time = 0;
 959
 960         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 961         spectrum.channels[0].channel = params->channel;
 962         spectrum.channels[0].type = type;
 963         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 964                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 965                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 966
 967         rc = iwl_send_cmd_sync(priv, &cmd);
 968         if (rc)
 969                 return rc;
 970
 971         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 972         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 973                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 974                 rc = -EIO;
 975         }
 976
 977         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 978         switch (spectrum_resp_status) {
 979         case 0:         /* Command will be handled */
 980                 if (res->u.spectrum.id != 0xff) {
 981                         IWL_DEBUG_INFO
 982                             ("Replaced existing measurement: %d\n",
 983                              res->u.spectrum.id);
 984                         priv->measurement_status &= ~MEASUREMENT_READY;
 985                 }
 986                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 987                 rc = 0;
 988                 break;
 989
 990         case 1:         /* Command will not be handled */
 991                 rc = -EAGAIN;
 992                 break;
 993         }
 994
 995         dev_kfree_skb_any(cmd.meta.u.skb);
 996
 997         return rc;
 998 }
 999 #endif
1000
1001 /******************************************************************************
1002  *
1003  * Generic RX handler implementations
1004  *
1005  ******************************************************************************/
1006 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1007                                 struct iwl_rx_mem_buffer *rxb)
1008 {
1009         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1010         struct iwl_alive_resp *palive;
1011         struct delayed_work *pwork;
1012
1013         palive = &pkt->u.alive_frame;
1014
1015         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1016                        "0x%01X 0x%01X\n",
1017                        palive->is_valid, palive->ver_type,
1018                        palive->ver_subtype);
1019
1020         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1021                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1022                 memcpy(&priv->card_alive_init,
1023                        &pkt->u.alive_frame,
1024                        sizeof(struct iwl_init_alive_resp));
1025                 pwork = &priv->init_alive_start;
1026         } else {
1027                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1028                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1029                        sizeof(struct iwl_alive_resp));
1030                 pwork = &priv->alive_start;
1031         }
1032
1033         /* We delay the ALIVE response by 5ms to
1034          * give the HW RF Kill time to activate... */
1035         if (palive->is_valid == UCODE_VALID_OK)
1036                 queue_delayed_work(priv->workqueue, pwork,
1037                                    msecs_to_jiffies(5));
1038         else
1039                 IWL_WARNING("uCode did not respond OK.\n");
1040 }
1041
1042 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1043                                    struct iwl_rx_mem_buffer *rxb)
1044 {
1045         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1046
1047         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1048                 "seq 0x%04X ser 0x%08X\n",
1049                 le32_to_cpu(pkt->u.err_resp.error_type),
1050                 get_cmd_string(pkt->u.err_resp.cmd_id),
1051                 pkt->u.err_resp.cmd_id,
1052                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1053                 le32_to_cpu(pkt->u.err_resp.error_info));
1054 }
1055
1056 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1057
1058 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1059 {
1060         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1062         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1063         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1064                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1065         rxon->channel = csa->channel;
1066         priv->staging_rxon.channel = csa->channel;
1067 }
1068
1069 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1070                                           struct iwl_rx_mem_buffer *rxb)
1071 {
1072 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1073         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1074         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1075
1076         if (!report->state) {
1077                 IWL_DEBUG(IWL_DL_11H,
1078                         "Spectrum Measure Notification: Start\n");
1079                 return;
1080         }
1081
1082         memcpy(&priv->measure_report, report, sizeof(*report));
1083         priv->measurement_status |= MEASUREMENT_READY;
1084 #endif
1085 }
1086
1087 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1088                                       struct iwl_rx_mem_buffer *rxb)
1089 {
1090 #ifdef CONFIG_IWLWIFI_DEBUG
1091         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1092         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1093         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1094                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1099                                              struct iwl_rx_mem_buffer *rxb)
1100 {
1101         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1102         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1103                         "notification for %s:\n",
1104                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1105         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1106 }
1107
1108 static void iwl4965_bg_beacon_update(struct work_struct *work)
1109 {
1110         struct iwl_priv *priv =
1111                 container_of(work, struct iwl_priv, beacon_update);
1112         struct sk_buff *beacon;
1113
1114         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1115         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1116
1117         if (!beacon) {
1118                 IWL_ERROR("update beacon failed\n");
1119                 return;
1120         }
1121
1122         mutex_lock(&priv->mutex);
1123         /* new beacon skb is allocated every time; dispose previous.*/
1124         if (priv->ibss_beacon)
1125                 dev_kfree_skb(priv->ibss_beacon);
1126
1127         priv->ibss_beacon = beacon;
1128         mutex_unlock(&priv->mutex);
1129
1130         iwl4965_send_beacon_cmd(priv);
1131 }
1132
1133 /**
1134  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1135  *
1136  * This callback is provided in order to send a statistics request.
1137  *
1138  * This timer function is continually reset to execute within
1139  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1140  * was received.  We need to ensure we receive the statistics in order
1141  * to update the temperature used for calibrating the TXPOWER.
1142  */
1143 static void iwl4965_bg_statistics_periodic(unsigned long data)
1144 {
1145         struct iwl_priv *priv = (struct iwl_priv *)data;
1146
1147         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1148                 return;
1149
1150         iwl_send_statistics_request(priv, CMD_ASYNC);
1151 }
1152
1153 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1154                                 struct iwl_rx_mem_buffer *rxb)
1155 {
1156 #ifdef CONFIG_IWLWIFI_DEBUG
1157         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1158         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1159         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1160
1161         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1162                 "tsf %d %d rate %d\n",
1163                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1164                 beacon->beacon_notify_hdr.failure_frame,
1165                 le32_to_cpu(beacon->ibss_mgr_status),
1166                 le32_to_cpu(beacon->high_tsf),
1167                 le32_to_cpu(beacon->low_tsf), rate);
1168 #endif
1169
1170         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1171             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1172                 queue_work(priv->workqueue, &priv->beacon_update);
1173 }
1174
1175 /* Handle notification from uCode that card's power state is changing
1176  * due to software, hardware, or critical temperature RFKILL */
1177 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1178                                     struct iwl_rx_mem_buffer *rxb)
1179 {
1180         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1181         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1182         unsigned long status = priv->status;
1183
1184         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1185                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1186                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1187
1188         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1189                      RF_CARD_DISABLED)) {
1190
1191                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1192                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1193
1194                 if (!iwl_grab_nic_access(priv)) {
1195                         iwl_write_direct32(
1196                                 priv, HBUS_TARG_MBX_C,
1197                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1198
1199                         iwl_release_nic_access(priv);
1200                 }
1201
1202                 if (!(flags & RXON_CARD_DISABLED)) {
1203                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1204                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1205                         if (!iwl_grab_nic_access(priv)) {
1206                                 iwl_write_direct32(
1207                                         priv, HBUS_TARG_MBX_C,
1208                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210                                 iwl_release_nic_access(priv);
1211                         }
1212                 }
1213
1214                 if (flags & RF_CARD_DISABLED) {
1215                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1216                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1217                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1218                         if (!iwl_grab_nic_access(priv))
1219                                 iwl_release_nic_access(priv);
1220                 }
1221         }
1222
1223         if (flags & HW_CARD_DISABLED)
1224                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1225         else
1226                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1227
1228
1229         if (flags & SW_CARD_DISABLED)
1230                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1231         else
1232                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1233
1234         if (!(flags & RXON_CARD_DISABLED))
1235                 iwl_scan_cancel(priv);
1236
1237         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1238              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1239             (test_bit(STATUS_RF_KILL_SW, &status) !=
1240              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1241                 queue_work(priv->workqueue, &priv->rf_kill);
1242         else
1243                 wake_up_interruptible(&priv->wait_command_queue);
1244 }
1245
1246 /**
1247  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1248  *
1249  * Setup the RX handlers for each of the reply types sent from the uCode
1250  * to the host.
1251  *
1252  * This function chains into the hardware specific files for them to setup
1253  * any hardware specific handlers as well.
1254  */
1255 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1256 {
1257         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1258         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1259         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1260         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1261             iwl4965_rx_spectrum_measure_notif;
1262         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1263         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1264             iwl4965_rx_pm_debug_statistics_notif;
1265         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1266
1267         /*
1268          * The same handler is used for both the REPLY to a discrete
1269          * statistics request from the host as well as for the periodic
1270          * statistics notifications (after received beacons) from the uCode.
1271          */
1272         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1273         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1274
1275         iwl_setup_rx_scan_handlers(priv);
1276
1277         /* status change handler */
1278         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1279
1280         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1281             iwl_rx_missed_beacon_notif;
1282         /* Rx handlers */
1283         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1284         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1285         /* block ack */
1286         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1287         /* Set up hardware specific Rx handlers */
1288         priv->cfg->ops->lib->rx_handler_setup(priv);
1289 }
1290
1291 /*
1292  * this should be called while priv->lock is locked
1293 */
1294 static void __iwl_rx_replenish(struct iwl_priv *priv)
1295 {
1296         iwl_rx_allocate(priv);
1297         iwl_rx_queue_restock(priv);
1298 }
1299
1300
1301 /**
1302  * iwl_rx_handle - Main entry function for receiving responses from uCode
1303  *
1304  * Uses the priv->rx_handlers callback function array to invoke
1305  * the appropriate handlers, including command responses,
1306  * frame-received notifications, and other notifications.
1307  */
1308 void iwl_rx_handle(struct iwl_priv *priv)
1309 {
1310         struct iwl_rx_mem_buffer *rxb;
1311         struct iwl_rx_packet *pkt;
1312         struct iwl_rx_queue *rxq = &priv->rxq;
1313         u32 r, i;
1314         int reclaim;
1315         unsigned long flags;
1316         u8 fill_rx = 0;
1317         u32 count = 8;
1318
1319         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1320          * buffer that the driver may process (last buffer filled by ucode). */
1321         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1322         i = rxq->read;
1323
1324         /* Rx interrupt, but nothing sent from uCode */
1325         if (i == r)
1326                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1327
1328         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1329                 fill_rx = 1;
1330
1331         while (i != r) {
1332                 rxb = rxq->queue[i];
1333
1334                 /* If an RXB doesn't have a Rx queue slot associated with it,
1335                  * then a bug has been introduced in the queue refilling
1336                  * routines -- catch it here */
1337                 BUG_ON(rxb == NULL);
1338
1339                 rxq->queue[i] = NULL;
1340
1341                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1342                                             priv->hw_params.rx_buf_size,
1343                                             PCI_DMA_FROMDEVICE);
1344                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1345
1346                 /* Reclaim a command buffer only if this packet is a response
1347                  *   to a (driver-originated) command.
1348                  * If the packet (e.g. Rx frame) originated from uCode,
1349                  *   there is no command buffer to reclaim.
1350                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1351                  *   but apparently a few don't get set; catch them here. */
1352                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1353                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1354                         (pkt->hdr.cmd != REPLY_RX) &&
1355                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1356                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1357                         (pkt->hdr.cmd != REPLY_TX);
1358
1359                 /* Based on type of command response or notification,
1360                  *   handle those that need handling via function in
1361                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1362                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1363                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1364                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1365                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1366                 } else {
1367                         /* No handling needed */
1368                         IWL_DEBUG(IWL_DL_RX,
1369                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1370                                 r, i, get_cmd_string(pkt->hdr.cmd),
1371                                 pkt->hdr.cmd);
1372                 }
1373
1374                 if (reclaim) {
1375                         /* Invoke any callbacks, transfer the skb to caller, and
1376                          * fire off the (possibly) blocking iwl_send_cmd()
1377                          * as we reclaim the driver command queue */
1378                         if (rxb && rxb->skb)
1379                                 iwl_tx_cmd_complete(priv, rxb);
1380                         else
1381                                 IWL_WARNING("Claim null rxb?\n");
1382                 }
1383
1384                 /* For now we just don't re-use anything.  We can tweak this
1385                  * later to try and re-use notification packets and SKBs that
1386                  * fail to Rx correctly */
1387                 if (rxb->skb != NULL) {
1388                         priv->alloc_rxb_skb--;
1389                         dev_kfree_skb_any(rxb->skb);
1390                         rxb->skb = NULL;
1391                 }
1392
1393                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1394                                  priv->hw_params.rx_buf_size,
1395                                  PCI_DMA_FROMDEVICE);
1396                 spin_lock_irqsave(&rxq->lock, flags);
1397                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1398                 spin_unlock_irqrestore(&rxq->lock, flags);
1399                 i = (i + 1) & RX_QUEUE_MASK;
1400                 /* If there are a lot of unused frames,
1401                  * restock the Rx queue so ucode wont assert. */
1402                 if (fill_rx) {
1403                         count++;
1404                         if (count >= 8) {
1405                                 priv->rxq.read = i;
1406                                 __iwl_rx_replenish(priv);
1407                                 count = 0;
1408                         }
1409                 }
1410         }
1411
1412         /* Backtrack one entry */
1413         priv->rxq.read = i;
1414         iwl_rx_queue_restock(priv);
1415 }
1416
1417 #ifdef CONFIG_IWLWIFI_DEBUG
1418 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1419 {
1420         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1421         DECLARE_MAC_BUF(mac);
1422
1423         IWL_DEBUG_RADIO("RX CONFIG:\n");
1424         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1425         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1426         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1427         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1428                         le32_to_cpu(rxon->filter_flags));
1429         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1430         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1431                         rxon->ofdm_basic_rates);
1432         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1433         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1434                         print_mac(mac, rxon->node_addr));
1435         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1436                         print_mac(mac, rxon->bssid_addr));
1437         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1438 }
1439 #endif
1440
1441 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1442 {
1443         IWL_DEBUG_ISR("Enabling interrupts\n");
1444         set_bit(STATUS_INT_ENABLED, &priv->status);
1445         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1446 }
1447
1448 /* call this function to flush any scheduled tasklet */
1449 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1450 {
1451         /* wait to make sure we flush pedding tasklet*/
1452         synchronize_irq(priv->pci_dev->irq);
1453         tasklet_kill(&priv->irq_tasklet);
1454 }
1455
1456 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1457 {
1458         clear_bit(STATUS_INT_ENABLED, &priv->status);
1459
1460         /* disable interrupts from uCode/NIC to host */
1461         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1462
1463         /* acknowledge/clear/reset any interrupts still pending
1464          * from uCode or flow handler (Rx/Tx DMA) */
1465         iwl_write32(priv, CSR_INT, 0xffffffff);
1466         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1467         IWL_DEBUG_ISR("Disabled interrupts\n");
1468 }
1469
1470
1471 /**
1472  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1473  */
1474 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1475 {
1476         /* Set the FW error flag -- cleared on iwl4965_down */
1477         set_bit(STATUS_FW_ERROR, &priv->status);
1478
1479         /* Cancel currently queued command. */
1480         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1481
1482 #ifdef CONFIG_IWLWIFI_DEBUG
1483         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1484                 iwl_dump_nic_error_log(priv);
1485                 iwl_dump_nic_event_log(priv);
1486                 iwl4965_print_rx_config_cmd(priv);
1487         }
1488 #endif
1489
1490         wake_up_interruptible(&priv->wait_command_queue);
1491
1492         /* Keep the restart process from trying to send host
1493          * commands by clearing the INIT status bit */
1494         clear_bit(STATUS_READY, &priv->status);
1495
1496         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1497                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1498                           "Restarting adapter due to uCode error.\n");
1499
1500                 if (iwl_is_associated(priv)) {
1501                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1502                                sizeof(priv->recovery_rxon));
1503                         priv->error_recovering = 1;
1504                 }
1505                 if (priv->cfg->mod_params->restart_fw)
1506                         queue_work(priv->workqueue, &priv->restart);
1507         }
1508 }
1509
1510 static void iwl4965_error_recovery(struct iwl_priv *priv)
1511 {
1512         unsigned long flags;
1513
1514         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1515                sizeof(priv->staging_rxon));
1516         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1517         iwl4965_commit_rxon(priv);
1518
1519         iwl_rxon_add_station(priv, priv->bssid, 1);
1520
1521         spin_lock_irqsave(&priv->lock, flags);
1522         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1523         priv->error_recovering = 0;
1524         spin_unlock_irqrestore(&priv->lock, flags);
1525 }
1526
1527 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1528 {
1529         u32 inta, handled = 0;
1530         u32 inta_fh;
1531         unsigned long flags;
1532 #ifdef CONFIG_IWLWIFI_DEBUG
1533         u32 inta_mask;
1534 #endif
1535
1536         spin_lock_irqsave(&priv->lock, flags);
1537
1538         /* Ack/clear/reset pending uCode interrupts.
1539          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1540          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1541         inta = iwl_read32(priv, CSR_INT);
1542         iwl_write32(priv, CSR_INT, inta);
1543
1544         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1545          * Any new interrupts that happen after this, either while we're
1546          * in this tasklet, or later, will show up in next ISR/tasklet. */
1547         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1548         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1549
1550 #ifdef CONFIG_IWLWIFI_DEBUG
1551         if (priv->debug_level & IWL_DL_ISR) {
1552                 /* just for debug */
1553                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1554                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1555                               inta, inta_mask, inta_fh);
1556         }
1557 #endif
1558
1559         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1560          * atomic, make sure that inta covers all the interrupts that
1561          * we've discovered, even if FH interrupt came in just after
1562          * reading CSR_INT. */
1563         if (inta_fh & CSR49_FH_INT_RX_MASK)
1564                 inta |= CSR_INT_BIT_FH_RX;
1565         if (inta_fh & CSR49_FH_INT_TX_MASK)
1566                 inta |= CSR_INT_BIT_FH_TX;
1567
1568         /* Now service all interrupt bits discovered above. */
1569         if (inta & CSR_INT_BIT_HW_ERR) {
1570                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1571
1572                 /* Tell the device to stop sending interrupts */
1573                 iwl4965_disable_interrupts(priv);
1574
1575                 iwl4965_irq_handle_error(priv);
1576
1577                 handled |= CSR_INT_BIT_HW_ERR;
1578
1579                 spin_unlock_irqrestore(&priv->lock, flags);
1580
1581                 return;
1582         }
1583
1584 #ifdef CONFIG_IWLWIFI_DEBUG
1585         if (priv->debug_level & (IWL_DL_ISR)) {
1586                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1587                 if (inta & CSR_INT_BIT_SCD)
1588                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1589                                       "the frame/frames.\n");
1590
1591                 /* Alive notification via Rx interrupt will do the real work */
1592                 if (inta & CSR_INT_BIT_ALIVE)
1593                         IWL_DEBUG_ISR("Alive interrupt\n");
1594         }
1595 #endif
1596         /* Safely ignore these bits for debug checks below */
1597         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1598
1599         /* HW RF KILL switch toggled */
1600         if (inta & CSR_INT_BIT_RF_KILL) {
1601                 int hw_rf_kill = 0;
1602                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1603                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1604                         hw_rf_kill = 1;
1605
1606                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1607                                 hw_rf_kill ? "disable radio":"enable radio");
1608
1609                 /* Queue restart only if RF_KILL switch was set to "kill"
1610                  *   when we loaded driver, and is now set to "enable".
1611                  * After we're Alive, RF_KILL gets handled by
1612                  *   iwl4965_rx_card_state_notif() */
1613                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1614                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1615                         queue_work(priv->workqueue, &priv->restart);
1616                 }
1617
1618                 handled |= CSR_INT_BIT_RF_KILL;
1619         }
1620
1621         /* Chip got too hot and stopped itself */
1622         if (inta & CSR_INT_BIT_CT_KILL) {
1623                 IWL_ERROR("Microcode CT kill error detected.\n");
1624                 handled |= CSR_INT_BIT_CT_KILL;
1625         }
1626
1627         /* Error detected by uCode */
1628         if (inta & CSR_INT_BIT_SW_ERR) {
1629                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1630                           inta);
1631                 iwl4965_irq_handle_error(priv);
1632                 handled |= CSR_INT_BIT_SW_ERR;
1633         }
1634
1635         /* uCode wakes up after power-down sleep */
1636         if (inta & CSR_INT_BIT_WAKEUP) {
1637                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1638                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1640                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1641                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1642                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1643                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1644                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1645
1646                 handled |= CSR_INT_BIT_WAKEUP;
1647         }
1648
1649         /* All uCode command responses, including Tx command responses,
1650          * Rx "responses" (frame-received notification), and other
1651          * notifications from uCode come through here*/
1652         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1653                 iwl_rx_handle(priv);
1654                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1655         }
1656
1657         if (inta & CSR_INT_BIT_FH_TX) {
1658                 IWL_DEBUG_ISR("Tx interrupt\n");
1659                 handled |= CSR_INT_BIT_FH_TX;
1660                 /* FH finished to write, send event */
1661                 priv->ucode_write_complete = 1;
1662                 wake_up_interruptible(&priv->wait_command_queue);
1663         }
1664
1665         if (inta & ~handled)
1666                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1667
1668         if (inta & ~CSR_INI_SET_MASK) {
1669                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1670                          inta & ~CSR_INI_SET_MASK);
1671                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1672         }
1673
1674         /* Re-enable all interrupts */
1675         /* only Re-enable if diabled by irq */
1676         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1677                 iwl4965_enable_interrupts(priv);
1678
1679 #ifdef CONFIG_IWLWIFI_DEBUG
1680         if (priv->debug_level & (IWL_DL_ISR)) {
1681                 inta = iwl_read32(priv, CSR_INT);
1682                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1683                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1684                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1685                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1686         }
1687 #endif
1688         spin_unlock_irqrestore(&priv->lock, flags);
1689 }
1690
1691 static irqreturn_t iwl4965_isr(int irq, void *data)
1692 {
1693         struct iwl_priv *priv = data;
1694         u32 inta, inta_mask;
1695         u32 inta_fh;
1696         if (!priv)
1697                 return IRQ_NONE;
1698
1699         spin_lock(&priv->lock);
1700
1701         /* Disable (but don't clear!) interrupts here to avoid
1702          *    back-to-back ISRs and sporadic interrupts from our NIC.
1703          * If we have something to service, the tasklet will re-enable ints.
1704          * If we *don't* have something, we'll re-enable before leaving here. */
1705         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1706         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1707
1708         /* Discover which interrupts are active/pending */
1709         inta = iwl_read32(priv, CSR_INT);
1710         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1711
1712         /* Ignore interrupt if there's nothing in NIC to service.
1713          * This may be due to IRQ shared with another device,
1714          * or due to sporadic interrupts thrown from our NIC. */
1715         if (!inta && !inta_fh) {
1716                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1717                 goto none;
1718         }
1719
1720         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1721                 /* Hardware disappeared. It might have already raised
1722                  * an interrupt */
1723                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1724                 goto unplugged;
1725         }
1726
1727         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1728                       inta, inta_mask, inta_fh);
1729
1730         inta &= ~CSR_INT_BIT_SCD;
1731
1732         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1733         if (likely(inta || inta_fh))
1734                 tasklet_schedule(&priv->irq_tasklet);
1735
1736  unplugged:
1737         spin_unlock(&priv->lock);
1738         return IRQ_HANDLED;
1739
1740  none:
1741         /* re-enable interrupts here since we don't have anything to service. */
1742         /* only Re-enable if diabled by irq */
1743         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1744                 iwl4965_enable_interrupts(priv);
1745         spin_unlock(&priv->lock);
1746         return IRQ_NONE;
1747 }
1748
1749 /******************************************************************************
1750  *
1751  * uCode download functions
1752  *
1753  ******************************************************************************/
1754
1755 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1756 {
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1758         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1759         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1760         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1761         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1762         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1763 }
1764
1765 static void iwl4965_nic_start(struct iwl_priv *priv)
1766 {
1767         /* Remove all resets to allow NIC to operate */
1768         iwl_write32(priv, CSR_RESET, 0);
1769 }
1770
1771
1772 /**
1773  * iwl4965_read_ucode - Read uCode images from disk file.
1774  *
1775  * Copy into buffers for card to fetch via bus-mastering
1776  */
1777 static int iwl4965_read_ucode(struct iwl_priv *priv)
1778 {
1779         struct iwl_ucode *ucode;
1780         int ret;
1781         const struct firmware *ucode_raw;
1782         const char *name = priv->cfg->fw_name;
1783         u8 *src;
1784         size_t len;
1785         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1786
1787         /* Ask kernel firmware_class module to get the boot firmware off disk.
1788          * request_firmware() is synchronous, file is in memory on return. */
1789         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1790         if (ret < 0) {
1791                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1792                                         name, ret);
1793                 goto error;
1794         }
1795
1796         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1797                        name, ucode_raw->size);
1798
1799         /* Make sure that we got at least our header! */
1800         if (ucode_raw->size < sizeof(*ucode)) {
1801                 IWL_ERROR("File size way too small!\n");
1802                 ret = -EINVAL;
1803                 goto err_release;
1804         }
1805
1806         /* Data from ucode file:  header followed by uCode images */
1807         ucode = (void *)ucode_raw->data;
1808
1809         ver = le32_to_cpu(ucode->ver);
1810         inst_size = le32_to_cpu(ucode->inst_size);
1811         data_size = le32_to_cpu(ucode->data_size);
1812         init_size = le32_to_cpu(ucode->init_size);
1813         init_data_size = le32_to_cpu(ucode->init_data_size);
1814         boot_size = le32_to_cpu(ucode->boot_size);
1815
1816         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1817         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1818                        inst_size);
1819         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1820                        data_size);
1821         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1822                        init_size);
1823         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1824                        init_data_size);
1825         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1826                        boot_size);
1827
1828         /* Verify size of file vs. image size info in file's header */
1829         if (ucode_raw->size < sizeof(*ucode) +
1830                 inst_size + data_size + init_size +
1831                 init_data_size + boot_size) {
1832
1833                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1834                                (int)ucode_raw->size);
1835                 ret = -EINVAL;
1836                 goto err_release;
1837         }
1838
1839         /* Verify that uCode images will fit in card's SRAM */
1840         if (inst_size > priv->hw_params.max_inst_size) {
1841                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1842                                inst_size);
1843                 ret = -EINVAL;
1844                 goto err_release;
1845         }
1846
1847         if (data_size > priv->hw_params.max_data_size) {
1848                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1849                                 data_size);
1850                 ret = -EINVAL;
1851                 goto err_release;
1852         }
1853         if (init_size > priv->hw_params.max_inst_size) {
1854                 IWL_DEBUG_INFO
1855                     ("uCode init instr len %d too large to fit in\n",
1856                       init_size);
1857                 ret = -EINVAL;
1858                 goto err_release;
1859         }
1860         if (init_data_size > priv->hw_params.max_data_size) {
1861                 IWL_DEBUG_INFO
1862                     ("uCode init data len %d too large to fit in\n",
1863                       init_data_size);
1864                 ret = -EINVAL;
1865                 goto err_release;
1866         }
1867         if (boot_size > priv->hw_params.max_bsm_size) {
1868                 IWL_DEBUG_INFO
1869                     ("uCode boot instr len %d too large to fit in\n",
1870                       boot_size);
1871                 ret = -EINVAL;
1872                 goto err_release;
1873         }
1874
1875         /* Allocate ucode buffers for card's bus-master loading ... */
1876
1877         /* Runtime instructions and 2 copies of data:
1878          * 1) unmodified from disk
1879          * 2) backup cache for save/restore during power-downs */
1880         priv->ucode_code.len = inst_size;
1881         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1882
1883         priv->ucode_data.len = data_size;
1884         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1885
1886         priv->ucode_data_backup.len = data_size;
1887         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1888
1889         /* Initialization instructions and data */
1890         if (init_size && init_data_size) {
1891                 priv->ucode_init.len = init_size;
1892                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1893
1894                 priv->ucode_init_data.len = init_data_size;
1895                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1896
1897                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1898                         goto err_pci_alloc;
1899         }
1900
1901         /* Bootstrap (instructions only, no data) */
1902         if (boot_size) {
1903                 priv->ucode_boot.len = boot_size;
1904                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1905
1906                 if (!priv->ucode_boot.v_addr)
1907                         goto err_pci_alloc;
1908         }
1909
1910         /* Copy images into buffers for card's bus-master reads ... */
1911
1912         /* Runtime instructions (first block of data in file) */
1913         src = &ucode->data[0];
1914         len = priv->ucode_code.len;
1915         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1916         memcpy(priv->ucode_code.v_addr, src, len);
1917         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1918                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1919
1920         /* Runtime data (2nd block)
1921          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1922         src = &ucode->data[inst_size];
1923         len = priv->ucode_data.len;
1924         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1925         memcpy(priv->ucode_data.v_addr, src, len);
1926         memcpy(priv->ucode_data_backup.v_addr, src, len);
1927
1928         /* Initialization instructions (3rd block) */
1929         if (init_size) {
1930                 src = &ucode->data[inst_size + data_size];
1931                 len = priv->ucode_init.len;
1932                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1933                                 len);
1934                 memcpy(priv->ucode_init.v_addr, src, len);
1935         }
1936
1937         /* Initialization data (4th block) */
1938         if (init_data_size) {
1939                 src = &ucode->data[inst_size + data_size + init_size];
1940                 len = priv->ucode_init_data.len;
1941                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1942                                len);
1943                 memcpy(priv->ucode_init_data.v_addr, src, len);
1944         }
1945
1946         /* Bootstrap instructions (5th block) */
1947         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1948         len = priv->ucode_boot.len;
1949         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1950         memcpy(priv->ucode_boot.v_addr, src, len);
1951
1952         /* We have our copies now, allow OS release its copies */
1953         release_firmware(ucode_raw);
1954         return 0;
1955
1956  err_pci_alloc:
1957         IWL_ERROR("failed to allocate pci memory\n");
1958         ret = -ENOMEM;
1959         iwl4965_dealloc_ucode_pci(priv);
1960
1961  err_release:
1962         release_firmware(ucode_raw);
1963
1964  error:
1965         return ret;
1966 }
1967
1968 /**
1969  * iwl_alive_start - called after REPLY_ALIVE notification received
1970  *                   from protocol/runtime uCode (initialization uCode's
1971  *                   Alive gets handled by iwl_init_alive_start()).
1972  */
1973 static void iwl_alive_start(struct iwl_priv *priv)
1974 {
1975         int ret = 0;
1976
1977         IWL_DEBUG_INFO("Runtime Alive received.\n");
1978
1979         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1980                 /* We had an error bringing up the hardware, so take it
1981                  * all the way back down so we can try again */
1982                 IWL_DEBUG_INFO("Alive failed.\n");
1983                 goto restart;
1984         }
1985
1986         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1987          * This is a paranoid check, because we would not have gotten the
1988          * "runtime" alive if code weren't properly loaded.  */
1989         if (iwl_verify_ucode(priv)) {
1990                 /* Runtime instruction load was bad;
1991                  * take it all the way back down so we can try again */
1992                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1993                 goto restart;
1994         }
1995
1996         iwl_clear_stations_table(priv);
1997         ret = priv->cfg->ops->lib->alive_notify(priv);
1998         if (ret) {
1999                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2000                             ret);
2001                 goto restart;
2002         }
2003
2004         /* After the ALIVE response, we can send host commands to 4965 uCode */
2005         set_bit(STATUS_ALIVE, &priv->status);
2006
2007         if (iwl_is_rfkill(priv))
2008                 return;
2009
2010         ieee80211_wake_queues(priv->hw);
2011
2012         priv->active_rate = priv->rates_mask;
2013         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2014
2015         if (iwl_is_associated(priv)) {
2016                 struct iwl_rxon_cmd *active_rxon =
2017                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2018
2019                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2020                        sizeof(priv->staging_rxon));
2021                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2022         } else {
2023                 /* Initialize our rx_config data */
2024                 iwl4965_connection_init_rx_config(priv);
2025                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2026         }
2027
2028         /* Configure Bluetooth device coexistence support */
2029         iwl4965_send_bt_config(priv);
2030
2031         iwl_reset_run_time_calib(priv);
2032
2033         /* Configure the adapter for unassociated operation */
2034         iwl4965_commit_rxon(priv);
2035
2036         /* At this point, the NIC is initialized and operational */
2037         iwl_rf_kill_ct_config(priv);
2038
2039         iwl_leds_register(priv);
2040
2041         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2042         set_bit(STATUS_READY, &priv->status);
2043         wake_up_interruptible(&priv->wait_command_queue);
2044
2045         if (priv->error_recovering)
2046                 iwl4965_error_recovery(priv);
2047
2048         iwl_power_update_mode(priv, 1);
2049         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2050
2051         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2052                 iwl4965_set_mode(priv, priv->iw_mode);
2053
2054         return;
2055
2056  restart:
2057         queue_work(priv->workqueue, &priv->restart);
2058 }
2059
2060 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2061
2062 static void __iwl4965_down(struct iwl_priv *priv)
2063 {
2064         unsigned long flags;
2065         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2066
2067         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2068
2069         if (!exit_pending)
2070                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2071
2072         iwl_leds_unregister(priv);
2073
2074         iwl_clear_stations_table(priv);
2075
2076         /* Unblock any waiting calls */
2077         wake_up_interruptible_all(&priv->wait_command_queue);
2078
2079         /* Wipe out the EXIT_PENDING status bit if we are not actually
2080          * exiting the module */
2081         if (!exit_pending)
2082                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2083
2084         /* stop and reset the on-board processor */
2085         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2086
2087         /* tell the device to stop sending interrupts */
2088         spin_lock_irqsave(&priv->lock, flags);
2089         iwl4965_disable_interrupts(priv);
2090         spin_unlock_irqrestore(&priv->lock, flags);
2091         iwl_synchronize_irq(priv);
2092
2093         if (priv->mac80211_registered)
2094                 ieee80211_stop_queues(priv->hw);
2095
2096         /* If we have not previously called iwl4965_init() then
2097          * clear all bits but the RF Kill and SUSPEND bits and return */
2098         if (!iwl_is_init(priv)) {
2099                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2100                                         STATUS_RF_KILL_HW |
2101                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2102                                         STATUS_RF_KILL_SW |
2103                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2104                                         STATUS_GEO_CONFIGURED |
2105                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2106                                         STATUS_IN_SUSPEND |
2107                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2108                                         STATUS_EXIT_PENDING;
2109                 goto exit;
2110         }
2111
2112         /* ...otherwise clear out all the status bits but the RF Kill and
2113          * SUSPEND bits and continue taking the NIC down. */
2114         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2115                                 STATUS_RF_KILL_HW |
2116                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2117                                 STATUS_RF_KILL_SW |
2118                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2119                                 STATUS_GEO_CONFIGURED |
2120                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2121                                 STATUS_IN_SUSPEND |
2122                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2123                                 STATUS_FW_ERROR |
2124                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2125                                 STATUS_EXIT_PENDING;
2126
2127         spin_lock_irqsave(&priv->lock, flags);
2128         iwl_clear_bit(priv, CSR_GP_CNTRL,
2129                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2130         spin_unlock_irqrestore(&priv->lock, flags);
2131
2132         iwl_txq_ctx_stop(priv);
2133         iwl_rxq_stop(priv);
2134
2135         spin_lock_irqsave(&priv->lock, flags);
2136         if (!iwl_grab_nic_access(priv)) {
2137                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2138                                          APMG_CLK_VAL_DMA_CLK_RQT);
2139                 iwl_release_nic_access(priv);
2140         }
2141         spin_unlock_irqrestore(&priv->lock, flags);
2142
2143         udelay(5);
2144
2145         /* FIXME: apm_ops.suspend(priv) */
2146         priv->cfg->ops->lib->apm_ops.reset(priv);
2147         priv->cfg->ops->lib->free_shared_mem(priv);
2148
2149  exit:
2150         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2151
2152         if (priv->ibss_beacon)
2153                 dev_kfree_skb(priv->ibss_beacon);
2154         priv->ibss_beacon = NULL;
2155
2156         /* clear out any free frames */
2157         iwl_clear_free_frames(priv);
2158 }
2159
2160 static void iwl4965_down(struct iwl_priv *priv)
2161 {
2162         mutex_lock(&priv->mutex);
2163         __iwl4965_down(priv);
2164         mutex_unlock(&priv->mutex);
2165
2166         iwl_cancel_deferred_work(priv);
2167 }
2168
2169 #define MAX_HW_RESTARTS 5
2170
2171 static int __iwl4965_up(struct iwl_priv *priv)
2172 {
2173         int i;
2174         int ret;
2175
2176         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2177                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2178                 return -EIO;
2179         }
2180
2181         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2182                 IWL_ERROR("ucode not available for device bringup\n");
2183                 return -EIO;
2184         }
2185
2186         /* If platform's RF_KILL switch is NOT set to KILL */
2187         if (iwl_read32(priv, CSR_GP_CNTRL) &
2188                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2189                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2190         else {
2191                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2192                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2193                         iwl_rfkill_set_hw_state(priv);
2194                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2195                         return -ENODEV;
2196                 }
2197         }
2198
2199         iwl_rfkill_set_hw_state(priv);
2200         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2201
2202         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2203         if (ret) {
2204                 IWL_ERROR("Unable to allocate shared memory\n");
2205                 return ret;
2206         }
2207
2208         ret = iwl_hw_nic_init(priv);
2209         if (ret) {
2210                 IWL_ERROR("Unable to init nic\n");
2211                 return ret;
2212         }
2213
2214         /* 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,
2217                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2218
2219         /* clear (again), then enable host interrupts */
2220         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2221         iwl4965_enable_interrupts(priv);
2222
2223         /* really make sure rfkill handshake bits are cleared */
2224         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2225         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2226
2227         /* Copy original ucode data image from disk into backup cache.
2228          * This will be used to initialize the on-board processor's
2229          * data SRAM for a clean start when the runtime program first loads. */
2230         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2231                priv->ucode_data.len);
2232
2233         /* We return success when we resume from suspend and rf_kill is on. */
2234         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2235             test_bit(STATUS_RF_KILL_SW, &priv->status))
2236                 return 0;
2237
2238         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2239
2240                 iwl_clear_stations_table(priv);
2241
2242                 /* load bootstrap state machine,
2243                  * load bootstrap program into processor's memory,
2244                  * prepare to load the "initialize" uCode */
2245                 ret = priv->cfg->ops->lib->load_ucode(priv);
2246
2247                 if (ret) {
2248                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2249                         continue;
2250                 }
2251
2252                 /* Clear out the uCode error bit if it is set */
2253                 clear_bit(STATUS_FW_ERROR, &priv->status);
2254
2255                 /* start card; "initialize" will load runtime ucode */
2256                 iwl4965_nic_start(priv);
2257
2258                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2259
2260                 return 0;
2261         }
2262
2263         set_bit(STATUS_EXIT_PENDING, &priv->status);
2264         __iwl4965_down(priv);
2265         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2266
2267         /* tried to restart and config the device for as long as our
2268          * patience could withstand */
2269         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2270         return -EIO;
2271 }
2272
2273
2274 /*****************************************************************************
2275  *
2276  * Workqueue callbacks
2277  *
2278  *****************************************************************************/
2279
2280 static void iwl_bg_init_alive_start(struct work_struct *data)
2281 {
2282         struct iwl_priv *priv =
2283             container_of(data, struct iwl_priv, init_alive_start.work);
2284
2285         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2286                 return;
2287
2288         mutex_lock(&priv->mutex);
2289         priv->cfg->ops->lib->init_alive_start(priv);
2290         mutex_unlock(&priv->mutex);
2291 }
2292
2293 static void iwl_bg_alive_start(struct work_struct *data)
2294 {
2295         struct iwl_priv *priv =
2296             container_of(data, struct iwl_priv, alive_start.work);
2297
2298         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2299                 return;
2300
2301         mutex_lock(&priv->mutex);
2302         iwl_alive_start(priv);
2303         mutex_unlock(&priv->mutex);
2304 }
2305
2306 static void iwl4965_bg_rf_kill(struct work_struct *work)
2307 {
2308         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2309
2310         wake_up_interruptible(&priv->wait_command_queue);
2311
2312         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2313                 return;
2314
2315         mutex_lock(&priv->mutex);
2316
2317         if (!iwl_is_rfkill(priv)) {
2318                 IWL_DEBUG(IWL_DL_RF_KILL,
2319                           "HW and/or SW RF Kill no longer active, restarting "
2320                           "device\n");
2321                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2322                         queue_work(priv->workqueue, &priv->restart);
2323         } else {
2324                 /* make sure mac80211 stop sending Tx frame */
2325                 if (priv->mac80211_registered)
2326                         ieee80211_stop_queues(priv->hw);
2327
2328                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2329                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2330                                           "disabled by SW switch\n");
2331                 else
2332                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2333                                     "Kill switch must be turned off for "
2334                                     "wireless networking to work.\n");
2335         }
2336         iwl_rfkill_set_hw_state(priv);
2337
2338         mutex_unlock(&priv->mutex);
2339 }
2340
2341 static void iwl4965_bg_set_monitor(struct work_struct *work)
2342 {
2343         struct iwl_priv *priv = container_of(work,
2344                                 struct iwl_priv, set_monitor);
2345         int ret;
2346
2347         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2348
2349         mutex_lock(&priv->mutex);
2350
2351         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2352
2353         if (ret) {
2354                 if (ret == -EAGAIN)
2355                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2356                 else
2357                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2358         }
2359
2360         mutex_unlock(&priv->mutex);
2361 }
2362
2363 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2364 {
2365         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2366                         run_time_calib_work);
2367
2368         mutex_lock(&priv->mutex);
2369
2370         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2371             test_bit(STATUS_SCANNING, &priv->status)) {
2372                 mutex_unlock(&priv->mutex);
2373                 return;
2374         }
2375
2376         if (priv->start_calib) {
2377                 iwl_chain_noise_calibration(priv, &priv->statistics);
2378
2379                 iwl_sensitivity_calibration(priv, &priv->statistics);
2380         }
2381
2382         mutex_unlock(&priv->mutex);
2383         return;
2384 }
2385
2386 static void iwl4965_bg_up(struct work_struct *data)
2387 {
2388         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2389
2390         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2391                 return;
2392
2393         mutex_lock(&priv->mutex);
2394         __iwl4965_up(priv);
2395         mutex_unlock(&priv->mutex);
2396 }
2397
2398 static void iwl4965_bg_restart(struct work_struct *data)
2399 {
2400         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2401
2402         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2403                 return;
2404
2405         iwl4965_down(priv);
2406         queue_work(priv->workqueue, &priv->up);
2407 }
2408
2409 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2410 {
2411         struct iwl_priv *priv =
2412             container_of(data, struct iwl_priv, rx_replenish);
2413
2414         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2415                 return;
2416
2417         mutex_lock(&priv->mutex);
2418         iwl_rx_replenish(priv);
2419         mutex_unlock(&priv->mutex);
2420 }
2421
2422 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2423
2424 static void iwl4965_post_associate(struct iwl_priv *priv)
2425 {
2426         struct ieee80211_conf *conf = NULL;
2427         int ret = 0;
2428         DECLARE_MAC_BUF(mac);
2429
2430         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2431                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2432                 return;
2433         }
2434
2435         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2436                         priv->assoc_id,
2437                         print_mac(mac, priv->active_rxon.bssid_addr));
2438
2439
2440         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2441                 return;
2442
2443
2444         if (!priv->vif || !priv->is_open)
2445                 return;
2446
2447         iwl_scan_cancel_timeout(priv, 200);
2448
2449         conf = ieee80211_get_hw_conf(priv->hw);
2450
2451         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2452         iwl4965_commit_rxon(priv);
2453
2454         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2455         iwl4965_setup_rxon_timing(priv);
2456         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2457                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2458         if (ret)
2459                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2460                             "Attempting to continue.\n");
2461
2462         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2463
2464         if (priv->current_ht_config.is_ht)
2465                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2466
2467         iwl_set_rxon_chain(priv);
2468         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2469
2470         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2471                         priv->assoc_id, priv->beacon_int);
2472
2473         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2474                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2475         else
2476                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2477
2478         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2479                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2480                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2481                 else
2482                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2483
2484                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2485                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2486
2487         }
2488
2489         iwl4965_commit_rxon(priv);
2490
2491         switch (priv->iw_mode) {
2492         case IEEE80211_IF_TYPE_STA:
2493                 break;
2494
2495         case IEEE80211_IF_TYPE_IBSS:
2496
2497                 /* assume default assoc id */
2498                 priv->assoc_id = 1;
2499
2500                 iwl_rxon_add_station(priv, priv->bssid, 0);
2501                 iwl4965_send_beacon_cmd(priv);
2502
2503                 break;
2504
2505         default:
2506                 IWL_ERROR("%s Should not be called in %d mode\n",
2507                                 __FUNCTION__, priv->iw_mode);
2508                 break;
2509         }
2510
2511         /* Enable Rx differential gain and sensitivity calibrations */
2512         iwl_chain_noise_reset(priv);
2513         priv->start_calib = 1;
2514
2515         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2516                 priv->assoc_station_added = 1;
2517
2518         iwl4965_activate_qos(priv, 0);
2519
2520         iwl_power_update_mode(priv, 0);
2521         /* we have just associated, don't start scan too early */
2522         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2523 }
2524
2525
2526 static void iwl4965_bg_post_associate(struct work_struct *data)
2527 {
2528         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2529                                              post_associate.work);
2530
2531         mutex_lock(&priv->mutex);
2532         iwl4965_post_associate(priv);
2533         mutex_unlock(&priv->mutex);
2534
2535 }
2536
2537 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2538
2539 static void iwl_bg_scan_completed(struct work_struct *work)
2540 {
2541         struct iwl_priv *priv =
2542             container_of(work, struct iwl_priv, scan_completed);
2543
2544         IWL_DEBUG_SCAN("SCAN complete scan\n");
2545
2546         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2547                 return;
2548
2549         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2550                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2551
2552         ieee80211_scan_completed(priv->hw);
2553
2554         /* Since setting the TXPOWER may have been deferred while
2555          * performing the scan, fire one off */
2556         mutex_lock(&priv->mutex);
2557         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2558         mutex_unlock(&priv->mutex);
2559 }
2560
2561 /*****************************************************************************
2562  *
2563  * mac80211 entry point functions
2564  *
2565  *****************************************************************************/
2566
2567 #define UCODE_READY_TIMEOUT     (2 * HZ)
2568
2569 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2570 {
2571         struct iwl_priv *priv = hw->priv;
2572         int ret;
2573
2574         IWL_DEBUG_MAC80211("enter\n");
2575
2576         if (pci_enable_device(priv->pci_dev)) {
2577                 IWL_ERROR("Fail to pci_enable_device\n");
2578                 return -ENODEV;
2579         }
2580         pci_restore_state(priv->pci_dev);
2581         pci_enable_msi(priv->pci_dev);
2582
2583         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2584                           DRV_NAME, priv);
2585         if (ret) {
2586                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2587                 goto out_disable_msi;
2588         }
2589
2590         /* we should be verifying the device is ready to be opened */
2591         mutex_lock(&priv->mutex);
2592
2593         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2594         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2595          * ucode filename and max sizes are card-specific. */
2596
2597         if (!priv->ucode_code.len) {
2598                 ret = iwl4965_read_ucode(priv);
2599                 if (ret) {
2600                         IWL_ERROR("Could not read microcode: %d\n", ret);
2601                         mutex_unlock(&priv->mutex);
2602                         goto out_release_irq;
2603                 }
2604         }
2605
2606         ret = __iwl4965_up(priv);
2607
2608         mutex_unlock(&priv->mutex);
2609
2610         if (ret)
2611                 goto out_release_irq;
2612
2613         IWL_DEBUG_INFO("Start UP work done.\n");
2614
2615         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2616                 return 0;
2617
2618         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2619          * mac80211 will not be run successfully. */
2620         if (priv->ucode_type == UCODE_RT) {
2621                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2622                                 test_bit(STATUS_READY, &priv->status),
2623                                 UCODE_READY_TIMEOUT);
2624                 if (!ret) {
2625                         if (!test_bit(STATUS_READY, &priv->status)) {
2626                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2627                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2628                                 ret = -ETIMEDOUT;
2629                                 goto out_release_irq;
2630                         }
2631                 }
2632
2633                 priv->is_open = 1;
2634         }
2635         IWL_DEBUG_MAC80211("leave\n");
2636         return 0;
2637
2638 out_release_irq:
2639         free_irq(priv->pci_dev->irq, priv);
2640 out_disable_msi:
2641         pci_disable_msi(priv->pci_dev);
2642         pci_disable_device(priv->pci_dev);
2643         priv->is_open = 0;
2644         IWL_DEBUG_MAC80211("leave - failed\n");
2645         return ret;
2646 }
2647
2648 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2649 {
2650         struct iwl_priv *priv = hw->priv;
2651
2652         IWL_DEBUG_MAC80211("enter\n");
2653
2654         if (!priv->is_open) {
2655                 IWL_DEBUG_MAC80211("leave - skip\n");
2656                 return;
2657         }
2658
2659         priv->is_open = 0;
2660
2661         if (iwl_is_ready_rf(priv)) {
2662                 /* stop mac, cancel any scan request and clear
2663                  * RXON_FILTER_ASSOC_MSK BIT
2664                  */
2665                 mutex_lock(&priv->mutex);
2666                 iwl_scan_cancel_timeout(priv, 100);
2667                 cancel_delayed_work(&priv->post_associate);
2668                 mutex_unlock(&priv->mutex);
2669         }
2670
2671         iwl4965_down(priv);
2672
2673         flush_workqueue(priv->workqueue);
2674         free_irq(priv->pci_dev->irq, priv);
2675         pci_disable_msi(priv->pci_dev);
2676         pci_save_state(priv->pci_dev);
2677         pci_disable_device(priv->pci_dev);
2678
2679         IWL_DEBUG_MAC80211("leave\n");
2680 }
2681
2682 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2683 {
2684         struct iwl_priv *priv = hw->priv;
2685
2686         IWL_DEBUG_MAC80211("enter\n");
2687
2688         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2689                 IWL_DEBUG_MAC80211("leave - monitor\n");
2690                 return -1;
2691         }
2692
2693         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2694                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2695
2696         if (iwl_tx_skb(priv, skb))
2697                 dev_kfree_skb_any(skb);
2698
2699         IWL_DEBUG_MAC80211("leave\n");
2700         return 0;
2701 }
2702
2703 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2704                                  struct ieee80211_if_init_conf *conf)
2705 {
2706         struct iwl_priv *priv = hw->priv;
2707         unsigned long flags;
2708         DECLARE_MAC_BUF(mac);
2709
2710         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2711
2712         if (priv->vif) {
2713                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2714                 return -EOPNOTSUPP;
2715         }
2716
2717         spin_lock_irqsave(&priv->lock, flags);
2718         priv->vif = conf->vif;
2719
2720         spin_unlock_irqrestore(&priv->lock, flags);
2721
2722         mutex_lock(&priv->mutex);
2723
2724         if (conf->mac_addr) {
2725                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2726                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2727         }
2728
2729         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2730                 /* we are not ready, will run again when ready */
2731                 set_bit(STATUS_MODE_PENDING, &priv->status);
2732
2733         mutex_unlock(&priv->mutex);
2734
2735         IWL_DEBUG_MAC80211("leave\n");
2736         return 0;
2737 }
2738
2739 /**
2740  * iwl4965_mac_config - mac80211 config callback
2741  *
2742  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2743  * be set inappropriately and the driver currently sets the hardware up to
2744  * use it whenever needed.
2745  */
2746 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2747 {
2748         struct iwl_priv *priv = hw->priv;
2749         const struct iwl_channel_info *ch_info;
2750         unsigned long flags;
2751         int ret = 0;
2752         u16 channel;
2753
2754         mutex_lock(&priv->mutex);
2755         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2756
2757         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2758
2759         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2760                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2761                 goto out;
2762         }
2763
2764         if (!conf->radio_enabled)
2765                 iwl_radio_kill_sw_disable_radio(priv);
2766
2767         if (!iwl_is_ready(priv)) {
2768                 IWL_DEBUG_MAC80211("leave - not ready\n");
2769                 ret = -EIO;
2770                 goto out;
2771         }
2772
2773         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2774                      test_bit(STATUS_SCANNING, &priv->status))) {
2775                 IWL_DEBUG_MAC80211("leave - scanning\n");
2776                 set_bit(STATUS_CONF_PENDING, &priv->status);
2777                 mutex_unlock(&priv->mutex);
2778                 return 0;
2779         }
2780
2781         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2782         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2783         if (!is_channel_valid(ch_info)) {
2784                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2785                 ret = -EINVAL;
2786                 goto out;
2787         }
2788
2789         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2790             !is_channel_ibss(ch_info)) {
2791                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2792                         conf->channel->hw_value, conf->channel->band);
2793                 ret = -EINVAL;
2794                 goto out;
2795         }
2796
2797         spin_lock_irqsave(&priv->lock, flags);
2798
2799         /* if we are switching from ht to 2.4 clear flags
2800          * from any ht related info since 2.4 does not
2801          * support ht */
2802         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2803 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2804             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2805 #endif
2806         )
2807                 priv->staging_rxon.flags = 0;
2808
2809         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2810
2811         iwl_set_flags_for_band(priv, conf->channel->band);
2812
2813         /* The list of supported rates and rate mask can be different
2814          * for each band; since the band may have changed, reset
2815          * the rate mask to what mac80211 lists */
2816         iwl4965_set_rate(priv);
2817
2818         spin_unlock_irqrestore(&priv->lock, flags);
2819
2820 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2821         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2822                 iwl4965_hw_channel_switch(priv, conf->channel);
2823                 goto out;
2824         }
2825 #endif
2826
2827         if (!conf->radio_enabled) {
2828                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2829                 goto out;
2830         }
2831
2832         if (iwl_is_rfkill(priv)) {
2833                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2834                 ret = -EIO;
2835                 goto out;
2836         }
2837
2838         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2839                            priv->tx_power_user_lmt, conf->power_level);
2840
2841         iwl_set_tx_power(priv, conf->power_level, false);
2842
2843         iwl4965_set_rate(priv);
2844
2845         if (memcmp(&priv->active_rxon,
2846                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2847                 iwl4965_commit_rxon(priv);
2848         else
2849                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2850
2851         IWL_DEBUG_MAC80211("leave\n");
2852
2853 out:
2854         clear_bit(STATUS_CONF_PENDING, &priv->status);
2855         mutex_unlock(&priv->mutex);
2856         return ret;
2857 }
2858
2859 static void iwl4965_config_ap(struct iwl_priv *priv)
2860 {
2861         int ret = 0;
2862
2863         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2864                 return;
2865
2866         /* The following should be done only at AP bring up */
2867         if (!(iwl_is_associated(priv))) {
2868
2869                 /* RXON - unassoc (to set timing command) */
2870                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2871                 iwl4965_commit_rxon(priv);
2872
2873                 /* RXON Timing */
2874                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2875                 iwl4965_setup_rxon_timing(priv);
2876                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2877                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2878                 if (ret)
2879                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2880                                         "Attempting to continue.\n");
2881
2882                 iwl_set_rxon_chain(priv);
2883
2884                 /* FIXME: what should be the assoc_id for AP? */
2885                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2886                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2887                         priv->staging_rxon.flags |=
2888                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2889                 else
2890                         priv->staging_rxon.flags &=
2891                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2892
2893                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2894                         if (priv->assoc_capability &
2895                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2896                                 priv->staging_rxon.flags |=
2897                                         RXON_FLG_SHORT_SLOT_MSK;
2898                         else
2899                                 priv->staging_rxon.flags &=
2900                                         ~RXON_FLG_SHORT_SLOT_MSK;
2901
2902                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2903                                 priv->staging_rxon.flags &=
2904                                         ~RXON_FLG_SHORT_SLOT_MSK;
2905                 }
2906                 /* restore RXON assoc */
2907                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2908                 iwl4965_commit_rxon(priv);
2909                 iwl4965_activate_qos(priv, 1);
2910                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2911         }
2912         iwl4965_send_beacon_cmd(priv);
2913
2914         /* FIXME - we need to add code here to detect a totally new
2915          * configuration, reset the AP, unassoc, rxon timing, assoc,
2916          * clear sta table, add BCAST sta... */
2917 }
2918
2919 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2920                                         struct ieee80211_vif *vif,
2921                                     struct ieee80211_if_conf *conf)
2922 {
2923         struct iwl_priv *priv = hw->priv;
2924         DECLARE_MAC_BUF(mac);
2925         unsigned long flags;
2926         int rc;
2927
2928         if (conf == NULL)
2929                 return -EIO;
2930
2931         if (priv->vif != vif) {
2932                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2933                 return 0;
2934         }
2935
2936         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2937             (!conf->beacon || !conf->ssid_len)) {
2938                 IWL_DEBUG_MAC80211
2939                     ("Leaving in AP mode because HostAPD is not ready.\n");
2940                 return 0;
2941         }
2942
2943         if (!iwl_is_alive(priv))
2944                 return -EAGAIN;
2945
2946         mutex_lock(&priv->mutex);
2947
2948         if (conf->bssid)
2949                 IWL_DEBUG_MAC80211("bssid: %s\n",
2950                                    print_mac(mac, conf->bssid));
2951
2952 /*
2953  * very dubious code was here; the probe filtering flag is never set:
2954  *
2955         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2956             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2957  */
2958
2959         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2960                 if (!conf->bssid) {
2961                         conf->bssid = priv->mac_addr;
2962                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2963                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2964                                            print_mac(mac, conf->bssid));
2965                 }
2966                 if (priv->ibss_beacon)
2967                         dev_kfree_skb(priv->ibss_beacon);
2968
2969                 priv->ibss_beacon = conf->beacon;
2970         }
2971
2972         if (iwl_is_rfkill(priv))
2973                 goto done;
2974
2975         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2976             !is_multicast_ether_addr(conf->bssid)) {
2977                 /* If there is currently a HW scan going on in the background
2978                  * then we need to cancel it else the RXON below will fail. */
2979                 if (iwl_scan_cancel_timeout(priv, 100)) {
2980                         IWL_WARNING("Aborted scan still in progress "
2981                                     "after 100ms\n");
2982                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2983                         mutex_unlock(&priv->mutex);
2984                         return -EAGAIN;
2985                 }
2986                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2987
2988                 /* TODO: Audit driver for usage of these members and see
2989                  * if mac80211 deprecates them (priv->bssid looks like it
2990                  * shouldn't be there, but I haven't scanned the IBSS code
2991                  * to verify) - jpk */
2992                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2993
2994                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2995                         iwl4965_config_ap(priv);
2996                 else {
2997                         rc = iwl4965_commit_rxon(priv);
2998                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2999                                 iwl_rxon_add_station(
3000                                         priv, priv->active_rxon.bssid_addr, 1);
3001                 }
3002
3003         } else {
3004                 iwl_scan_cancel_timeout(priv, 100);
3005                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3006                 iwl4965_commit_rxon(priv);
3007         }
3008
3009  done:
3010         spin_lock_irqsave(&priv->lock, flags);
3011         if (!conf->ssid_len)
3012                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3013         else
3014                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3015
3016         priv->essid_len = conf->ssid_len;
3017         spin_unlock_irqrestore(&priv->lock, flags);
3018
3019         IWL_DEBUG_MAC80211("leave\n");
3020         mutex_unlock(&priv->mutex);
3021
3022         return 0;
3023 }
3024
3025 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3026                                  unsigned int changed_flags,
3027                                  unsigned int *total_flags,
3028                                  int mc_count, struct dev_addr_list *mc_list)
3029 {
3030         /*
3031          * XXX: dummy
3032          * see also iwl4965_connection_init_rx_config
3033          */
3034         struct iwl_priv *priv = hw->priv;
3035         int new_flags = 0;
3036         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3037                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3038                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3039                                            IEEE80211_IF_TYPE_MNTR,
3040                                            changed_flags, *total_flags);
3041                         /* queue work 'cuz mac80211 is holding a lock which
3042                          * prevents us from issuing (synchronous) f/w cmds */
3043                         queue_work(priv->workqueue, &priv->set_monitor);
3044                         new_flags &= FIF_PROMISC_IN_BSS |
3045                                      FIF_OTHER_BSS |
3046                                      FIF_ALLMULTI;
3047                 }
3048         }
3049         *total_flags = new_flags;
3050 }
3051
3052 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3053                                      struct ieee80211_if_init_conf *conf)
3054 {
3055         struct iwl_priv *priv = hw->priv;
3056
3057         IWL_DEBUG_MAC80211("enter\n");
3058
3059         mutex_lock(&priv->mutex);
3060
3061         if (iwl_is_ready_rf(priv)) {
3062                 iwl_scan_cancel_timeout(priv, 100);
3063                 cancel_delayed_work(&priv->post_associate);
3064                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3065                 iwl4965_commit_rxon(priv);
3066         }
3067         if (priv->vif == conf->vif) {
3068                 priv->vif = NULL;
3069                 memset(priv->bssid, 0, ETH_ALEN);
3070                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3071                 priv->essid_len = 0;
3072         }
3073         mutex_unlock(&priv->mutex);
3074
3075         IWL_DEBUG_MAC80211("leave\n");
3076
3077 }
3078
3079 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3080 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3081                                      struct ieee80211_vif *vif,
3082                                      struct ieee80211_bss_conf *bss_conf,
3083                                      u32 changes)
3084 {
3085         struct iwl_priv *priv = hw->priv;
3086
3087         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3088
3089         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3090                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3091                                    bss_conf->use_short_preamble);
3092                 if (bss_conf->use_short_preamble)
3093                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3094                 else
3095                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3096         }
3097
3098         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3099                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3100                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3101                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3102                 else
3103                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3104         }
3105
3106         if (changes & BSS_CHANGED_HT) {
3107                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3108                 iwl4965_ht_conf(priv, bss_conf);
3109                 iwl_set_rxon_chain(priv);
3110         }
3111
3112         if (changes & BSS_CHANGED_ASSOC) {
3113                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3114                 /* This should never happen as this function should
3115                  * never be called from interrupt context. */
3116                 if (WARN_ON_ONCE(in_interrupt()))
3117                         return;
3118                 if (bss_conf->assoc) {
3119                         priv->assoc_id = bss_conf->aid;
3120                         priv->beacon_int = bss_conf->beacon_int;
3121                         priv->timestamp = bss_conf->timestamp;
3122                         priv->assoc_capability = bss_conf->assoc_capability;
3123                         priv->next_scan_jiffies = jiffies +
3124                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3125                         mutex_lock(&priv->mutex);
3126                         iwl4965_post_associate(priv);
3127                         mutex_unlock(&priv->mutex);
3128                 } else {
3129                         priv->assoc_id = 0;
3130                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3131                 }
3132         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3133                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3134                         iwl_send_rxon_assoc(priv);
3135         }
3136
3137 }
3138
3139 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3140 {
3141         int rc = 0;
3142         unsigned long flags;
3143         struct iwl_priv *priv = hw->priv;
3144
3145         IWL_DEBUG_MAC80211("enter\n");
3146
3147         mutex_lock(&priv->mutex);
3148         spin_lock_irqsave(&priv->lock, flags);
3149
3150         if (!iwl_is_ready_rf(priv)) {
3151                 rc = -EIO;
3152                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3153                 goto out_unlock;
3154         }
3155
3156         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3157                 rc = -EIO;
3158                 IWL_ERROR("ERROR: APs don't scan\n");
3159                 goto out_unlock;
3160         }
3161
3162         /* we don't schedule scan within next_scan_jiffies period */
3163         if (priv->next_scan_jiffies &&
3164                         time_after(priv->next_scan_jiffies, jiffies)) {
3165                 rc = -EAGAIN;
3166                 goto out_unlock;
3167         }
3168         /* if we just finished scan ask for delay */
3169         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3170                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3171                 rc = -EAGAIN;
3172                 goto out_unlock;
3173         }
3174         if (len) {
3175                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3176                                iwl_escape_essid(ssid, len), (int)len);
3177
3178                 priv->one_direct_scan = 1;
3179                 priv->direct_ssid_len = (u8)
3180                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3181                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3182         } else
3183                 priv->one_direct_scan = 0;
3184
3185         rc = iwl_scan_initiate(priv);
3186
3187         IWL_DEBUG_MAC80211("leave\n");
3188
3189 out_unlock:
3190         spin_unlock_irqrestore(&priv->lock, flags);
3191         mutex_unlock(&priv->mutex);
3192
3193         return rc;
3194 }
3195
3196 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3197                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3198                         u32 iv32, u16 *phase1key)
3199 {
3200         struct iwl_priv *priv = hw->priv;
3201         u8 sta_id = IWL_INVALID_STATION;
3202         unsigned long flags;
3203         __le16 key_flags = 0;
3204         int i;
3205         DECLARE_MAC_BUF(mac);
3206
3207         IWL_DEBUG_MAC80211("enter\n");
3208
3209         sta_id = iwl_find_station(priv, addr);
3210         if (sta_id == IWL_INVALID_STATION) {
3211                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3212                                    print_mac(mac, addr));
3213                 return;
3214         }
3215
3216         iwl_scan_cancel_timeout(priv, 100);
3217
3218         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3219         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3220         key_flags &= ~STA_KEY_FLG_INVALID;
3221
3222         if (sta_id == priv->hw_params.bcast_sta_id)
3223                 key_flags |= STA_KEY_MULTICAST_MSK;
3224
3225         spin_lock_irqsave(&priv->sta_lock, flags);
3226
3227         priv->stations[sta_id].sta.key.key_flags = key_flags;
3228         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3229
3230         for (i = 0; i < 5; i++)
3231                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3232                         cpu_to_le16(phase1key[i]);
3233
3234         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3235         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3236
3237         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3238
3239         spin_unlock_irqrestore(&priv->sta_lock, flags);
3240
3241         IWL_DEBUG_MAC80211("leave\n");
3242 }
3243
3244 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3245                            const u8 *local_addr, const u8 *addr,
3246                            struct ieee80211_key_conf *key)
3247 {
3248         struct iwl_priv *priv = hw->priv;
3249         DECLARE_MAC_BUF(mac);
3250         int ret = 0;
3251         u8 sta_id = IWL_INVALID_STATION;
3252         u8 is_default_wep_key = 0;
3253
3254         IWL_DEBUG_MAC80211("enter\n");
3255
3256         if (priv->hw_params.sw_crypto) {
3257                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3258                 return -EOPNOTSUPP;
3259         }
3260
3261         if (is_zero_ether_addr(addr))
3262                 /* only support pairwise keys */
3263                 return -EOPNOTSUPP;
3264
3265         sta_id = iwl_find_station(priv, addr);
3266         if (sta_id == IWL_INVALID_STATION) {
3267                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3268                                    print_mac(mac, addr));
3269                 return -EINVAL;
3270
3271         }
3272
3273         mutex_lock(&priv->mutex);
3274         iwl_scan_cancel_timeout(priv, 100);
3275         mutex_unlock(&priv->mutex);
3276
3277         /* If we are getting WEP group key and we didn't receive any key mapping
3278          * so far, we are in legacy wep mode (group key only), otherwise we are
3279          * in 1X mode.
3280          * In legacy wep mode, we use another host command to the uCode */
3281         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3282                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3283                 if (cmd == SET_KEY)
3284                         is_default_wep_key = !priv->key_mapping_key;
3285                 else
3286                         is_default_wep_key =
3287                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3288         }
3289
3290         switch (cmd) {
3291         case SET_KEY:
3292                 if (is_default_wep_key)
3293                         ret = iwl_set_default_wep_key(priv, key);
3294                 else
3295                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3296
3297                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3298                 break;
3299         case DISABLE_KEY:
3300                 if (is_default_wep_key)
3301                         ret = iwl_remove_default_wep_key(priv, key);
3302                 else
3303                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3304
3305                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3306                 break;
3307         default:
3308                 ret = -EINVAL;
3309         }
3310
3311         IWL_DEBUG_MAC80211("leave\n");
3312
3313         return ret;
3314 }
3315
3316 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3317                            const struct ieee80211_tx_queue_params *params)
3318 {
3319         struct iwl_priv *priv = hw->priv;
3320         unsigned long flags;
3321         int q;
3322
3323         IWL_DEBUG_MAC80211("enter\n");
3324
3325         if (!iwl_is_ready_rf(priv)) {
3326                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3327                 return -EIO;
3328         }
3329
3330         if (queue >= AC_NUM) {
3331                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3332                 return 0;
3333         }
3334
3335         if (!priv->qos_data.qos_enable) {
3336                 priv->qos_data.qos_active = 0;
3337                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3338                 return 0;
3339         }
3340         q = AC_NUM - 1 - queue;
3341
3342         spin_lock_irqsave(&priv->lock, flags);
3343
3344         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3345         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3346         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3347         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3348                         cpu_to_le16((params->txop * 32));
3349
3350         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3351         priv->qos_data.qos_active = 1;
3352
3353         spin_unlock_irqrestore(&priv->lock, flags);
3354
3355         mutex_lock(&priv->mutex);
3356         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3357                 iwl4965_activate_qos(priv, 1);
3358         else if (priv->assoc_id && iwl_is_associated(priv))
3359                 iwl4965_activate_qos(priv, 0);
3360
3361         mutex_unlock(&priv->mutex);
3362
3363         IWL_DEBUG_MAC80211("leave\n");
3364         return 0;
3365 }
3366
3367 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3368                                 struct ieee80211_tx_queue_stats *stats)
3369 {
3370         struct iwl_priv *priv = hw->priv;
3371         int i, avail;
3372         struct iwl_tx_queue *txq;
3373         struct iwl_queue *q;
3374         unsigned long flags;
3375
3376         IWL_DEBUG_MAC80211("enter\n");
3377
3378         if (!iwl_is_ready_rf(priv)) {
3379                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3380                 return -EIO;
3381         }
3382
3383         spin_lock_irqsave(&priv->lock, flags);
3384
3385         for (i = 0; i < AC_NUM; i++) {
3386                 txq = &priv->txq[i];
3387                 q = &txq->q;
3388                 avail = iwl_queue_space(q);
3389
3390                 stats[i].len = q->n_window - avail;
3391                 stats[i].limit = q->n_window - q->high_mark;
3392                 stats[i].count = q->n_window;
3393
3394         }
3395         spin_unlock_irqrestore(&priv->lock, flags);
3396
3397         IWL_DEBUG_MAC80211("leave\n");
3398
3399         return 0;
3400 }
3401
3402 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3403                              struct ieee80211_low_level_stats *stats)
3404 {
3405         struct iwl_priv *priv = hw->priv;
3406
3407         priv = hw->priv;
3408         IWL_DEBUG_MAC80211("enter\n");
3409         IWL_DEBUG_MAC80211("leave\n");
3410
3411         return 0;
3412 }
3413
3414 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3415 {
3416         struct iwl_priv *priv;
3417
3418         priv = hw->priv;
3419         IWL_DEBUG_MAC80211("enter\n");
3420         IWL_DEBUG_MAC80211("leave\n");
3421
3422         return 0;
3423 }
3424
3425 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3426 {
3427         struct iwl_priv *priv = hw->priv;
3428         unsigned long flags;
3429
3430         mutex_lock(&priv->mutex);
3431         IWL_DEBUG_MAC80211("enter\n");
3432
3433         spin_lock_irqsave(&priv->lock, flags);
3434         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3435         spin_unlock_irqrestore(&priv->lock, flags);
3436
3437         iwl_reset_qos(priv);
3438
3439         cancel_delayed_work(&priv->post_associate);
3440
3441         spin_lock_irqsave(&priv->lock, flags);
3442         priv->assoc_id = 0;
3443         priv->assoc_capability = 0;
3444         priv->assoc_station_added = 0;
3445
3446         /* new association get rid of ibss beacon skb */
3447         if (priv->ibss_beacon)
3448                 dev_kfree_skb(priv->ibss_beacon);
3449
3450         priv->ibss_beacon = NULL;
3451
3452         priv->beacon_int = priv->hw->conf.beacon_int;
3453         priv->timestamp = 0;
3454         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3455                 priv->beacon_int = 0;
3456
3457         spin_unlock_irqrestore(&priv->lock, flags);
3458
3459         if (!iwl_is_ready_rf(priv)) {
3460                 IWL_DEBUG_MAC80211("leave - not ready\n");
3461                 mutex_unlock(&priv->mutex);
3462                 return;
3463         }
3464
3465         /* we are restarting association process
3466          * clear RXON_FILTER_ASSOC_MSK bit
3467          */
3468         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3469                 iwl_scan_cancel_timeout(priv, 100);
3470                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3471                 iwl4965_commit_rxon(priv);
3472         }
3473
3474         iwl_power_update_mode(priv, 0);
3475
3476         /* Per mac80211.h: This is only used in IBSS mode... */
3477         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3478
3479                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3480                 mutex_unlock(&priv->mutex);
3481                 return;
3482         }
3483
3484         iwl4965_set_rate(priv);
3485
3486         mutex_unlock(&priv->mutex);
3487
3488         IWL_DEBUG_MAC80211("leave\n");
3489 }
3490
3491 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3492 {
3493         struct iwl_priv *priv = hw->priv;
3494         unsigned long flags;
3495
3496         mutex_lock(&priv->mutex);
3497         IWL_DEBUG_MAC80211("enter\n");
3498
3499         if (!iwl_is_ready_rf(priv)) {
3500                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3501                 mutex_unlock(&priv->mutex);
3502                 return -EIO;
3503         }
3504
3505         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3506                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3507                 mutex_unlock(&priv->mutex);
3508                 return -EIO;
3509         }
3510
3511         spin_lock_irqsave(&priv->lock, flags);
3512
3513         if (priv->ibss_beacon)
3514                 dev_kfree_skb(priv->ibss_beacon);
3515
3516         priv->ibss_beacon = skb;
3517
3518         priv->assoc_id = 0;
3519
3520         IWL_DEBUG_MAC80211("leave\n");
3521         spin_unlock_irqrestore(&priv->lock, flags);
3522
3523         iwl_reset_qos(priv);
3524
3525         iwl4965_post_associate(priv);
3526
3527         mutex_unlock(&priv->mutex);
3528
3529         return 0;
3530 }
3531
3532 /*****************************************************************************
3533  *
3534  * sysfs attributes
3535  *
3536  *****************************************************************************/
3537
3538 #ifdef CONFIG_IWLWIFI_DEBUG
3539
3540 /*
3541  * The following adds a new attribute to the sysfs representation
3542  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3543  * used for controlling the debug level.
3544  *
3545  * See the level definitions in iwl for details.
3546  */
3547
3548 static ssize_t show_debug_level(struct device *d,
3549                                 struct device_attribute *attr, char *buf)
3550 {
3551         struct iwl_priv *priv = d->driver_data;
3552
3553         return sprintf(buf, "0x%08X\n", priv->debug_level);
3554 }
3555 static ssize_t store_debug_level(struct device *d,
3556                                 struct device_attribute *attr,
3557                                  const char *buf, size_t count)
3558 {
3559         struct iwl_priv *priv = d->driver_data;
3560         char *p = (char *)buf;
3561         u32 val;
3562
3563         val = simple_strtoul(p, &p, 0);
3564         if (p == buf)
3565                 printk(KERN_INFO DRV_NAME
3566                        ": %s is not in hex or decimal form.\n", buf);
3567         else
3568                 priv->debug_level = val;
3569
3570         return strnlen(buf, count);
3571 }
3572
3573 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3574                         show_debug_level, store_debug_level);
3575
3576
3577 #endif /* CONFIG_IWLWIFI_DEBUG */
3578
3579
3580 static ssize_t show_version(struct device *d,
3581                                 struct device_attribute *attr, char *buf)
3582 {
3583         struct iwl_priv *priv = d->driver_data;
3584         struct iwl_alive_resp *palive = &priv->card_alive;
3585         ssize_t pos = 0;
3586         u16 eeprom_ver;
3587
3588         if (palive->is_valid)
3589                 pos += sprintf(buf + pos,
3590                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3591                                 "fw type: 0x%01X 0x%01X\n",
3592                                 palive->ucode_major, palive->ucode_minor,
3593                                 palive->sw_rev[0], palive->sw_rev[1],
3594                                 palive->ver_type, palive->ver_subtype);
3595         else
3596                 pos += sprintf(buf + pos, "fw not loaded\n");
3597
3598         if (priv->eeprom) {
3599                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3600                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3601                                  eeprom_ver);
3602         } else {
3603                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3604         }
3605
3606         return pos;
3607 }
3608
3609 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3610
3611 static ssize_t show_temperature(struct device *d,
3612                                 struct device_attribute *attr, char *buf)
3613 {
3614         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3615
3616         if (!iwl_is_alive(priv))
3617                 return -EAGAIN;
3618
3619         return sprintf(buf, "%d\n", priv->temperature);
3620 }
3621
3622 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3623
3624 static ssize_t show_rs_window(struct device *d,
3625                               struct device_attribute *attr,
3626                               char *buf)
3627 {
3628         struct iwl_priv *priv = d->driver_data;
3629         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3630 }
3631 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3632
3633 static ssize_t show_tx_power(struct device *d,
3634                              struct device_attribute *attr, char *buf)
3635 {
3636         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3637         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3638 }
3639
3640 static ssize_t store_tx_power(struct device *d,
3641                               struct device_attribute *attr,
3642                               const char *buf, size_t count)
3643 {
3644         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3645         char *p = (char *)buf;
3646         u32 val;
3647
3648         val = simple_strtoul(p, &p, 10);
3649         if (p == buf)
3650                 printk(KERN_INFO DRV_NAME
3651                        ": %s is not in decimal form.\n", buf);
3652         else
3653                 iwl_set_tx_power(priv, val, false);
3654
3655         return count;
3656 }
3657
3658 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3659
3660 static ssize_t show_flags(struct device *d,
3661                           struct device_attribute *attr, char *buf)
3662 {
3663         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3664
3665         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3666 }
3667
3668 static ssize_t store_flags(struct device *d,
3669                            struct device_attribute *attr,
3670                            const char *buf, size_t count)
3671 {
3672         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3673         u32 flags = simple_strtoul(buf, NULL, 0);
3674
3675         mutex_lock(&priv->mutex);
3676         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3677                 /* Cancel any currently running scans... */
3678                 if (iwl_scan_cancel_timeout(priv, 100))
3679                         IWL_WARNING("Could not cancel scan.\n");
3680                 else {
3681                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3682                                        flags);
3683                         priv->staging_rxon.flags = cpu_to_le32(flags);
3684                         iwl4965_commit_rxon(priv);
3685                 }
3686         }
3687         mutex_unlock(&priv->mutex);
3688
3689         return count;
3690 }
3691
3692 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3693
3694 static ssize_t show_filter_flags(struct device *d,
3695                                  struct device_attribute *attr, char *buf)
3696 {
3697         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3698
3699         return sprintf(buf, "0x%04X\n",
3700                 le32_to_cpu(priv->active_rxon.filter_flags));
3701 }
3702
3703 static ssize_t store_filter_flags(struct device *d,
3704                                   struct device_attribute *attr,
3705                                   const char *buf, size_t count)
3706 {
3707         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3709
3710         mutex_lock(&priv->mutex);
3711         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3712                 /* Cancel any currently running scans... */
3713                 if (iwl_scan_cancel_timeout(priv, 100))
3714                         IWL_WARNING("Could not cancel scan.\n");
3715                 else {
3716                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3717                                        "0x%04X\n", filter_flags);
3718                         priv->staging_rxon.filter_flags =
3719                                 cpu_to_le32(filter_flags);
3720                         iwl4965_commit_rxon(priv);
3721                 }
3722         }
3723         mutex_unlock(&priv->mutex);
3724
3725         return count;
3726 }
3727
3728 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3729                    store_filter_flags);
3730
3731 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3732
3733 static ssize_t show_measurement(struct device *d,
3734                                 struct device_attribute *attr, char *buf)
3735 {
3736         struct iwl_priv *priv = dev_get_drvdata(d);
3737         struct iwl4965_spectrum_notification measure_report;
3738         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3739         u8 *data = (u8 *) & measure_report;
3740         unsigned long flags;
3741
3742         spin_lock_irqsave(&priv->lock, flags);
3743         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3744                 spin_unlock_irqrestore(&priv->lock, flags);
3745                 return 0;
3746         }
3747         memcpy(&measure_report, &priv->measure_report, size);
3748         priv->measurement_status = 0;
3749         spin_unlock_irqrestore(&priv->lock, flags);
3750
3751         while (size && (PAGE_SIZE - len)) {
3752                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3753                                    PAGE_SIZE - len, 1);
3754                 len = strlen(buf);
3755                 if (PAGE_SIZE - len)
3756                         buf[len++] = '\n';
3757
3758                 ofs += 16;
3759                 size -= min(size, 16U);
3760         }
3761
3762         return len;
3763 }
3764
3765 static ssize_t store_measurement(struct device *d,
3766                                  struct device_attribute *attr,
3767                                  const char *buf, size_t count)
3768 {
3769         struct iwl_priv *priv = dev_get_drvdata(d);
3770         struct ieee80211_measurement_params params = {
3771                 .channel = le16_to_cpu(priv->active_rxon.channel),
3772                 .start_time = cpu_to_le64(priv->last_tsf),
3773                 .duration = cpu_to_le16(1),
3774         };
3775         u8 type = IWL_MEASURE_BASIC;
3776         u8 buffer[32];
3777         u8 channel;
3778
3779         if (count) {
3780                 char *p = buffer;
3781                 strncpy(buffer, buf, min(sizeof(buffer), count));
3782                 channel = simple_strtoul(p, NULL, 0);
3783                 if (channel)
3784                         params.channel = channel;
3785
3786                 p = buffer;
3787                 while (*p && *p != ' ')
3788                         p++;
3789                 if (*p)
3790                         type = simple_strtoul(p + 1, NULL, 0);
3791         }
3792
3793         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3794                        "channel %d (for '%s')\n", type, params.channel, buf);
3795         iwl4965_get_measurement(priv, &params, type);
3796
3797         return count;
3798 }
3799
3800 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3801                    show_measurement, store_measurement);
3802 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3803
3804 static ssize_t store_retry_rate(struct device *d,
3805                                 struct device_attribute *attr,
3806                                 const char *buf, size_t count)
3807 {
3808         struct iwl_priv *priv = dev_get_drvdata(d);
3809
3810         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3811         if (priv->retry_rate <= 0)
3812                 priv->retry_rate = 1;
3813
3814         return count;
3815 }
3816
3817 static ssize_t show_retry_rate(struct device *d,
3818                                struct device_attribute *attr, char *buf)
3819 {
3820         struct iwl_priv *priv = dev_get_drvdata(d);
3821         return sprintf(buf, "%d", priv->retry_rate);
3822 }
3823
3824 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3825                    store_retry_rate);
3826
3827 static ssize_t store_power_level(struct device *d,
3828                                  struct device_attribute *attr,
3829                                  const char *buf, size_t count)
3830 {
3831         struct iwl_priv *priv = dev_get_drvdata(d);
3832         int rc;
3833         int mode;
3834
3835         mode = simple_strtoul(buf, NULL, 0);
3836         mutex_lock(&priv->mutex);
3837
3838         if (!iwl_is_ready(priv)) {
3839                 rc = -EAGAIN;
3840                 goto out;
3841         }
3842
3843         rc = iwl_power_set_user_mode(priv, mode);
3844         if (rc) {
3845                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3846                 goto out;
3847         }
3848         rc = count;
3849
3850  out:
3851         mutex_unlock(&priv->mutex);
3852         return rc;
3853 }
3854
3855 #define MAX_WX_STRING 80
3856
3857 /* Values are in microsecond */
3858 static const s32 timeout_duration[] = {
3859         350000,
3860         250000,
3861         75000,
3862         37000,
3863         25000,
3864 };
3865 static const s32 period_duration[] = {
3866         400000,
3867         700000,
3868         1000000,
3869         1000000,
3870         1000000
3871 };
3872
3873 static ssize_t show_power_level(struct device *d,
3874                                 struct device_attribute *attr, char *buf)
3875 {
3876         struct iwl_priv *priv = dev_get_drvdata(d);
3877         int level = priv->power_data.power_mode;
3878         char *p = buf;
3879
3880         p += sprintf(p, "%d ", level);
3881         switch (level) {
3882         case IWL_POWER_MODE_CAM:
3883         case IWL_POWER_AC:
3884                 p += sprintf(p, "(AC)");
3885                 break;
3886         case IWL_POWER_BATTERY:
3887                 p += sprintf(p, "(BATTERY)");
3888                 break;
3889         default:
3890                 p += sprintf(p,
3891                              "(Timeout %dms, Period %dms)",
3892                              timeout_duration[level - 1] / 1000,
3893                              period_duration[level - 1] / 1000);
3894         }
3895 /*
3896         if (!(priv->power_mode & IWL_POWER_ENABLED))
3897                 p += sprintf(p, " OFF\n");
3898         else
3899                 p += sprintf(p, " \n");
3900 */
3901         p += sprintf(p, " \n");
3902         return (p - buf + 1);
3903 }
3904
3905 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3906                    store_power_level);
3907
3908 static ssize_t show_channels(struct device *d,
3909                              struct device_attribute *attr, char *buf)
3910 {
3911
3912         struct iwl_priv *priv = dev_get_drvdata(d);
3913         struct ieee80211_channel *channels = NULL;
3914         const struct ieee80211_supported_band *supp_band = NULL;
3915         int len = 0, i;
3916         int count = 0;
3917
3918         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3919                 return -EAGAIN;
3920
3921         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3922         channels = supp_band->channels;
3923         count = supp_band->n_channels;
3924
3925         len += sprintf(&buf[len],
3926                         "Displaying %d channels in 2.4GHz band "
3927                         "(802.11bg):\n", count);
3928
3929         for (i = 0; i < count; i++)
3930                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3931                                 ieee80211_frequency_to_channel(
3932                                 channels[i].center_freq),
3933                                 channels[i].max_power,
3934                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3935                                 " (IEEE 802.11h required)" : "",
3936                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3937                                 || (channels[i].flags &
3938                                 IEEE80211_CHAN_RADAR)) ? "" :
3939                                 ", IBSS",
3940                                 channels[i].flags &
3941                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3942                                 "passive only" : "active/passive");
3943
3944         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3945         channels = supp_band->channels;
3946         count = supp_band->n_channels;
3947
3948         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3949                         "(802.11a):\n", count);
3950
3951         for (i = 0; i < count; i++)
3952                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3953                                 ieee80211_frequency_to_channel(
3954                                 channels[i].center_freq),
3955                                 channels[i].max_power,
3956                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3957                                 " (IEEE 802.11h required)" : "",
3958                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3959                                 || (channels[i].flags &
3960                                 IEEE80211_CHAN_RADAR)) ? "" :
3961                                 ", IBSS",
3962                                 channels[i].flags &
3963                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3964                                 "passive only" : "active/passive");
3965
3966         return len;
3967 }
3968
3969 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3970
3971 static ssize_t show_statistics(struct device *d,
3972                                struct device_attribute *attr, char *buf)
3973 {
3974         struct iwl_priv *priv = dev_get_drvdata(d);
3975         u32 size = sizeof(struct iwl_notif_statistics);
3976         u32 len = 0, ofs = 0;
3977         u8 *data = (u8 *) & priv->statistics;
3978         int rc = 0;
3979
3980         if (!iwl_is_alive(priv))
3981                 return -EAGAIN;
3982
3983         mutex_lock(&priv->mutex);
3984         rc = iwl_send_statistics_request(priv, 0);
3985         mutex_unlock(&priv->mutex);
3986
3987         if (rc) {
3988                 len = sprintf(buf,
3989                               "Error sending statistics request: 0x%08X\n", rc);
3990                 return len;
3991         }
3992
3993         while (size && (PAGE_SIZE - len)) {
3994                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3995                                    PAGE_SIZE - len, 1);
3996                 len = strlen(buf);
3997                 if (PAGE_SIZE - len)
3998                         buf[len++] = '\n';
3999
4000                 ofs += 16;
4001                 size -= min(size, 16U);
4002         }
4003
4004         return len;
4005 }
4006
4007 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4008
4009 static ssize_t show_status(struct device *d,
4010                            struct device_attribute *attr, char *buf)
4011 {
4012         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4013         if (!iwl_is_alive(priv))
4014                 return -EAGAIN;
4015         return sprintf(buf, "0x%08x\n", (int)priv->status);
4016 }
4017
4018 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4019
4020 /*****************************************************************************
4021  *
4022  * driver setup and teardown
4023  *
4024  *****************************************************************************/
4025
4026 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4027 {
4028         priv->workqueue = create_workqueue(DRV_NAME);
4029
4030         init_waitqueue_head(&priv->wait_command_queue);
4031
4032         INIT_WORK(&priv->up, iwl4965_bg_up);
4033         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4034         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4035         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4036         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4037         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4038         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4039         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4040         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4041         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4042
4043         /* FIXME : remove when resolved PENDING */
4044         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4045         iwl_setup_scan_deferred_work(priv);
4046
4047         if (priv->cfg->ops->lib->setup_deferred_work)
4048                 priv->cfg->ops->lib->setup_deferred_work(priv);
4049
4050         init_timer(&priv->statistics_periodic);
4051         priv->statistics_periodic.data = (unsigned long)priv;
4052         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4053
4054         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4055                      iwl4965_irq_tasklet, (unsigned long)priv);
4056 }
4057
4058 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4059 {
4060         if (priv->cfg->ops->lib->cancel_deferred_work)
4061                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4062
4063         cancel_delayed_work_sync(&priv->init_alive_start);
4064         cancel_delayed_work(&priv->scan_check);
4065         cancel_delayed_work(&priv->alive_start);
4066         cancel_delayed_work(&priv->post_associate);
4067         cancel_work_sync(&priv->beacon_update);
4068         del_timer_sync(&priv->statistics_periodic);
4069 }
4070
4071 static struct attribute *iwl4965_sysfs_entries[] = {
4072         &dev_attr_channels.attr,
4073         &dev_attr_flags.attr,
4074         &dev_attr_filter_flags.attr,
4075 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4076         &dev_attr_measurement.attr,
4077 #endif
4078         &dev_attr_power_level.attr,
4079         &dev_attr_retry_rate.attr,
4080         &dev_attr_rs_window.attr,
4081         &dev_attr_statistics.attr,
4082         &dev_attr_status.attr,
4083         &dev_attr_temperature.attr,
4084         &dev_attr_tx_power.attr,
4085 #ifdef CONFIG_IWLWIFI_DEBUG
4086         &dev_attr_debug_level.attr,
4087 #endif
4088         &dev_attr_version.attr,
4089
4090         NULL
4091 };
4092
4093 static struct attribute_group iwl4965_attribute_group = {
4094         .name = NULL,           /* put in device directory */
4095         .attrs = iwl4965_sysfs_entries,
4096 };
4097
4098 static struct ieee80211_ops iwl4965_hw_ops = {
4099         .tx = iwl4965_mac_tx,
4100         .start = iwl4965_mac_start,
4101         .stop = iwl4965_mac_stop,
4102         .add_interface = iwl4965_mac_add_interface,
4103         .remove_interface = iwl4965_mac_remove_interface,
4104         .config = iwl4965_mac_config,
4105         .config_interface = iwl4965_mac_config_interface,
4106         .configure_filter = iwl4965_configure_filter,
4107         .set_key = iwl4965_mac_set_key,
4108         .update_tkip_key = iwl4965_mac_update_tkip_key,
4109         .get_stats = iwl4965_mac_get_stats,
4110         .get_tx_stats = iwl4965_mac_get_tx_stats,
4111         .conf_tx = iwl4965_mac_conf_tx,
4112         .get_tsf = iwl4965_mac_get_tsf,
4113         .reset_tsf = iwl4965_mac_reset_tsf,
4114         .beacon_update = iwl4965_mac_beacon_update,
4115         .bss_info_changed = iwl4965_bss_info_changed,
4116         .ampdu_action = iwl4965_mac_ampdu_action,
4117         .hw_scan = iwl4965_mac_hw_scan
4118 };
4119
4120 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4121 {
4122         int err = 0;
4123         struct iwl_priv *priv;
4124         struct ieee80211_hw *hw;
4125         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4126         unsigned long flags;
4127         DECLARE_MAC_BUF(mac);
4128
4129         /************************
4130          * 1. Allocating HW data
4131          ************************/
4132
4133         /* Disabling hardware scan means that mac80211 will perform scans
4134          * "the hard way", rather than using device's scan. */
4135         if (cfg->mod_params->disable_hw_scan) {
4136                 if (cfg->mod_params->debug & IWL_DL_INFO)
4137                         dev_printk(KERN_DEBUG, &(pdev->dev),
4138                                    "Disabling hw_scan\n");
4139                 iwl4965_hw_ops.hw_scan = NULL;
4140         }
4141
4142         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4143         if (!hw) {
4144                 err = -ENOMEM;
4145                 goto out;
4146         }
4147         priv = hw->priv;
4148         /* At this point both hw and priv are allocated. */
4149
4150         SET_IEEE80211_DEV(hw, &pdev->dev);
4151
4152         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4153         priv->cfg = cfg;
4154         priv->pci_dev = pdev;
4155
4156 #ifdef CONFIG_IWLWIFI_DEBUG
4157         priv->debug_level = priv->cfg->mod_params->debug;
4158         atomic_set(&priv->restrict_refcnt, 0);
4159 #endif
4160
4161         /**************************
4162          * 2. Initializing PCI bus
4163          **************************/
4164         if (pci_enable_device(pdev)) {
4165                 err = -ENODEV;
4166                 goto out_ieee80211_free_hw;
4167         }
4168
4169         pci_set_master(pdev);
4170
4171         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4172         if (!err)
4173                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4174         if (err) {
4175                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4176                 if (!err)
4177                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4178                 /* both attempts failed: */
4179                 if (err) {
4180                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4181                                 DRV_NAME);
4182                         goto out_pci_disable_device;
4183                 }
4184         }
4185
4186         err = pci_request_regions(pdev, DRV_NAME);
4187         if (err)
4188                 goto out_pci_disable_device;
4189
4190         pci_set_drvdata(pdev, priv);
4191
4192         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4193          * PCI Tx retries from interfering with C3 CPU state */
4194         pci_write_config_byte(pdev, 0x41, 0x00);
4195
4196         /***********************
4197          * 3. Read REV register
4198          ***********************/
4199         priv->hw_base = pci_iomap(pdev, 0, 0);
4200         if (!priv->hw_base) {
4201                 err = -ENODEV;
4202                 goto out_pci_release_regions;
4203         }
4204
4205         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4206                 (unsigned long long) pci_resource_len(pdev, 0));
4207         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4208
4209         iwl_hw_detect(priv);
4210         printk(KERN_INFO DRV_NAME
4211                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4212                 priv->cfg->name, priv->hw_rev);
4213
4214         /* amp init */
4215         err = priv->cfg->ops->lib->apm_ops.init(priv);
4216         if (err < 0) {
4217                 IWL_DEBUG_INFO("Failed to init APMG\n");
4218                 goto out_iounmap;
4219         }
4220         /*****************
4221          * 4. Read EEPROM
4222          *****************/
4223         /* Read the EEPROM */
4224         err = iwl_eeprom_init(priv);
4225         if (err) {
4226                 IWL_ERROR("Unable to init EEPROM\n");
4227                 goto out_iounmap;
4228         }
4229         err = iwl_eeprom_check_version(priv);
4230         if (err)
4231                 goto out_iounmap;
4232
4233         /* extract MAC Address */
4234         iwl_eeprom_get_mac(priv, priv->mac_addr);
4235         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4236         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4237
4238         /************************
4239          * 5. Setup HW constants
4240          ************************/
4241         /* Device-specific setup */
4242         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4243                 IWL_ERROR("failed to set hw parameters\n");
4244                 goto out_free_eeprom;
4245         }
4246
4247         /*******************
4248          * 6. Setup priv
4249          *******************/
4250
4251         err = iwl_init_drv(priv);
4252         if (err)
4253                 goto out_free_eeprom;
4254         /* At this point both hw and priv are initialized. */
4255
4256         /**********************************
4257          * 7. Initialize module parameters
4258          **********************************/
4259
4260         /* Disable radio (SW RF KILL) via parameter when loading driver */
4261         if (priv->cfg->mod_params->disable) {
4262                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4263                 IWL_DEBUG_INFO("Radio disabled.\n");
4264         }
4265
4266         /********************
4267          * 8. Setup services
4268          ********************/
4269         spin_lock_irqsave(&priv->lock, flags);
4270         iwl4965_disable_interrupts(priv);
4271         spin_unlock_irqrestore(&priv->lock, flags);
4272
4273         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4274         if (err) {
4275                 IWL_ERROR("failed to create sysfs device attributes\n");
4276                 goto out_uninit_drv;
4277         }
4278
4279
4280         iwl_setup_deferred_work(priv);
4281         iwl_setup_rx_handlers(priv);
4282
4283         /********************
4284          * 9. Conclude
4285          ********************/
4286         pci_save_state(pdev);
4287         pci_disable_device(pdev);
4288
4289         /**********************************
4290          * 10. Setup and register mac80211
4291          **********************************/
4292
4293         err = iwl_setup_mac(priv);
4294         if (err)
4295                 goto out_remove_sysfs;
4296
4297         err = iwl_dbgfs_register(priv, DRV_NAME);
4298         if (err)
4299                 IWL_ERROR("failed to create debugfs files\n");
4300
4301         err = iwl_rfkill_init(priv);
4302         if (err)
4303                 IWL_ERROR("Unable to initialize RFKILL system. "
4304                                   "Ignoring error: %d\n", err);
4305         iwl_power_initialize(priv);
4306         return 0;
4307
4308  out_remove_sysfs:
4309         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4310  out_uninit_drv:
4311         iwl_uninit_drv(priv);
4312  out_free_eeprom:
4313         iwl_eeprom_free(priv);
4314  out_iounmap:
4315         pci_iounmap(pdev, priv->hw_base);
4316  out_pci_release_regions:
4317         pci_release_regions(pdev);
4318         pci_set_drvdata(pdev, NULL);
4319  out_pci_disable_device:
4320         pci_disable_device(pdev);
4321  out_ieee80211_free_hw:
4322         ieee80211_free_hw(priv->hw);
4323  out:
4324         return err;
4325 }
4326
4327 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4328 {
4329         struct iwl_priv *priv = pci_get_drvdata(pdev);
4330         unsigned long flags;
4331
4332         if (!priv)
4333                 return;
4334
4335         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4336
4337         iwl_dbgfs_unregister(priv);
4338         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4339
4340         if (priv->mac80211_registered) {
4341                 ieee80211_unregister_hw(priv->hw);
4342                 priv->mac80211_registered = 0;
4343         }
4344
4345         set_bit(STATUS_EXIT_PENDING, &priv->status);
4346
4347         iwl4965_down(priv);
4348
4349         /* make sure we flush any pending irq or
4350          * tasklet for the driver
4351          */
4352         spin_lock_irqsave(&priv->lock, flags);
4353         iwl4965_disable_interrupts(priv);
4354         spin_unlock_irqrestore(&priv->lock, flags);
4355
4356         iwl_synchronize_irq(priv);
4357
4358         iwl_rfkill_unregister(priv);
4359         iwl4965_dealloc_ucode_pci(priv);
4360
4361         if (priv->rxq.bd)
4362                 iwl_rx_queue_free(priv, &priv->rxq);
4363         iwl_hw_txq_ctx_free(priv);
4364
4365         iwl_clear_stations_table(priv);
4366         iwl_eeprom_free(priv);
4367
4368
4369         /*netif_stop_queue(dev); */
4370         flush_workqueue(priv->workqueue);
4371
4372         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4373          * priv->workqueue... so we can't take down the workqueue
4374          * until now... */
4375         destroy_workqueue(priv->workqueue);
4376         priv->workqueue = NULL;
4377
4378         pci_iounmap(pdev, priv->hw_base);
4379         pci_release_regions(pdev);
4380         pci_disable_device(pdev);
4381         pci_set_drvdata(pdev, NULL);
4382
4383         iwl_uninit_drv(priv);
4384
4385         if (priv->ibss_beacon)
4386                 dev_kfree_skb(priv->ibss_beacon);
4387
4388         ieee80211_free_hw(priv->hw);
4389 }
4390
4391 #ifdef CONFIG_PM
4392
4393 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4394 {
4395         struct iwl_priv *priv = pci_get_drvdata(pdev);
4396
4397         if (priv->is_open) {
4398                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4399                 iwl4965_mac_stop(priv->hw);
4400                 priv->is_open = 1;
4401         }
4402
4403         pci_set_power_state(pdev, PCI_D3hot);
4404
4405         return 0;
4406 }
4407
4408 static int iwl4965_pci_resume(struct pci_dev *pdev)
4409 {
4410         struct iwl_priv *priv = pci_get_drvdata(pdev);
4411
4412         pci_set_power_state(pdev, PCI_D0);
4413
4414         if (priv->is_open)
4415                 iwl4965_mac_start(priv->hw);
4416
4417         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4418         return 0;
4419 }
4420
4421 #endif /* CONFIG_PM */
4422
4423 /*****************************************************************************
4424  *
4425  * driver and module entry point
4426  *
4427  *****************************************************************************/
4428
4429 /* Hardware specific file defines the PCI IDs table for that hardware module */
4430 static struct pci_device_id iwl_hw_card_ids[] = {
4431         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4432         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4433 #ifdef CONFIG_IWL5000
4434         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4435         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4436         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4437 #endif /* CONFIG_IWL5000 */
4438         {0}
4439 };
4440 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4441
4442 static struct pci_driver iwl_driver = {
4443         .name = DRV_NAME,
4444         .id_table = iwl_hw_card_ids,
4445         .probe = iwl4965_pci_probe,
4446         .remove = __devexit_p(iwl4965_pci_remove),
4447 #ifdef CONFIG_PM
4448         .suspend = iwl4965_pci_suspend,
4449         .resume = iwl4965_pci_resume,
4450 #endif
4451 };
4452
4453 static int __init iwl4965_init(void)
4454 {
4455
4456         int ret;
4457         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4458         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4459
4460         ret = iwl4965_rate_control_register();
4461         if (ret) {
4462                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4463                 return ret;
4464         }
4465
4466         ret = pci_register_driver(&iwl_driver);
4467         if (ret) {
4468                 IWL_ERROR("Unable to initialize PCI module\n");
4469                 goto error_register;
4470         }
4471
4472         return ret;
4473
4474 error_register:
4475         iwl4965_rate_control_unregister();
4476         return ret;
4477 }
4478
4479 static void __exit iwl4965_exit(void)
4480 {
4481         pci_unregister_driver(&iwl_driver);
4482         iwl4965_rate_control_unregister();
4483 }
4484
4485 module_exit(iwl4965_exit);
4486 module_init(iwl4965_init);