err.no Git - linux-2.6/blob - drivers/net/wireless/iwlwifi/iwl4965-base.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 /*************** STATION TABLE MANAGEMENT ****
  91  * mac80211 should be examined to determine if sta_info is duplicating
  92  * the functionality provided here
  93  */
  94
  95 /**************************************************************/
  96
  97
  98
  99 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 100 {
 101         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 102
 103         if (hw_decrypt)
 104                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 105         else
 106                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 107
 108 }
 109
 110 /**
 111  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 112  *
 113  * NOTE:  This is really only useful during development and can eventually
 114  * be #ifdef'd out once the driver is stable and folks aren't actively
 115  * making changes
 116  */
 117 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 118 {
 119         int error = 0;
 120         int counter = 1;
 121
 122         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 123                 error |= le32_to_cpu(rxon->flags &
 124                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 125                                  RXON_FLG_RADAR_DETECT_MSK));
 126                 if (error)
 127                         IWL_WARNING("check 24G fields %d | %d\n",
 128                                     counter++, error);
 129         } else {
 130                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 131                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 132                 if (error)
 133                         IWL_WARNING("check 52 fields %d | %d\n",
 134                                     counter++, error);
 135                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 136                 if (error)
 137                         IWL_WARNING("check 52 CCK %d | %d\n",
 138                                     counter++, error);
 139         }
 140         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 141         if (error)
 142                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 143
 144         /* make sure basic rates 6Mbps and 1Mbps are supported */
 145         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 146                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 147         if (error)
 148                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 149
 150         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 151         if (error)
 152                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 153
 154         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 155                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 156         if (error)
 157                 IWL_WARNING("check CCK and short slot %d | %d\n",
 158                             counter++, error);
 159
 160         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 161                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 162         if (error)
 163                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 164                             counter++, error);
 165
 166         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 167                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 168         if (error)
 169                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 170                             counter++, error);
 171
 172         if (error)
 173                 IWL_WARNING("Tuning to channel %d\n",
 174                             le16_to_cpu(rxon->channel));
 175
 176         if (error) {
 177                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 178                 return -1;
 179         }
 180         return 0;
 181 }
 182
 183 /**
 184  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 185  * @priv: staging_rxon is compared to active_rxon
 186  *
 187  * If the RXON structure is changing enough to require a new tune,
 188  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 189  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 190  */
 191 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 192 {
 193
 194         /* These items are only settable from the full RXON command */
 195         if (!(iwl_is_associated(priv)) ||
 196             compare_ether_addr(priv->staging_rxon.bssid_addr,
 197                                priv->active_rxon.bssid_addr) ||
 198             compare_ether_addr(priv->staging_rxon.node_addr,
 199                                priv->active_rxon.node_addr) ||
 200             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 201                                priv->active_rxon.wlap_bssid_addr) ||
 202             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 203             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 204             (priv->staging_rxon.air_propagation !=
 205              priv->active_rxon.air_propagation) ||
 206             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 207              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 208             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 209              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 210             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 211             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 212                 return 1;
 213
 214         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 215          * be updated with the RXON_ASSOC command -- however only some
 216          * flag transitions are allowed using RXON_ASSOC */
 217
 218         /* Check if we are not switching bands */
 219         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 220             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 221                 return 1;
 222
 223         /* Check if we are switching association toggle */
 224         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 225                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 226                 return 1;
 227
 228         return 0;
 229 }
 230
 231 /**
 232  * iwl4965_commit_rxon - commit staging_rxon to hardware
 233  *
 234  * The RXON command in staging_rxon is committed to the hardware and
 235  * the active_rxon structure is updated with the new data.  This
 236  * function correctly transitions out of the RXON_ASSOC_MSK state if
 237  * a HW tune is required based on the RXON structure changes.
 238  */
 239 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 240 {
 241         /* cast away the const for active_rxon in this function */
 242         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 243         DECLARE_MAC_BUF(mac);
 244         int ret;
 245         bool new_assoc =
 246                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 247
 248         if (!iwl_is_alive(priv))
 249                 return -EBUSY;
 250
 251         /* always get timestamp with Rx frame */
 252         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 253
 254         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 255         if (ret) {
 256                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 257                 return -EINVAL;
 258         }
 259
 260         /* If we don't need to send a full RXON, we can use
 261          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 262          * and other flags for the current radio configuration. */
 263         if (!iwl4965_full_rxon_required(priv)) {
 264                 ret = iwl_send_rxon_assoc(priv);
 265                 if (ret) {
 266                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 267                         return ret;
 268                 }
 269
 270                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 271                 return 0;
 272         }
 273
 274         /* station table will be cleared */
 275         priv->assoc_station_added = 0;
 276
 277         /* If we are currently associated and the new config requires
 278          * an RXON_ASSOC and the new config wants the associated mask enabled,
 279          * we must clear the associated from the active configuration
 280          * before we apply the new config */
 281         if (iwl_is_associated(priv) && new_assoc) {
 282                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 283                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 284
 285                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 286                                       sizeof(struct iwl_rxon_cmd),
 287                                       &priv->active_rxon);
 288
 289                 /* If the mask clearing failed then we set
 290                  * active_rxon back to what it was previously */
 291                 if (ret) {
 292                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 293                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 294                         return ret;
 295                 }
 296         }
 297
 298         IWL_DEBUG_INFO("Sending RXON\n"
 299                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 300                        "* channel = %d\n"
 301                        "* bssid = %s\n",
 302                        (new_assoc ? "" : "out"),
 303                        le16_to_cpu(priv->staging_rxon.channel),
 304                        print_mac(mac, priv->staging_rxon.bssid_addr));
 305
 306         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 307
 308         /* Apply the new configuration
 309          * RXON unassoc clears the station table in uCode, send it before
 310          * we add the bcast station. If assoc bit is set, we will send RXON
 311          * after having added the bcast and bssid station.
 312          */
 313         if (!new_assoc) {
 314                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 315                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 316                 if (ret) {
 317                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 318                         return ret;
 319                 }
 320                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 321         }
 322
 323         iwl_clear_stations_table(priv);
 324
 325         if (!priv->error_recovering)
 326                 priv->start_calib = 0;
 327
 328         iwl_init_sensitivity(priv);
 329
 330         /* If we issue a new RXON command which required a tune then we must
 331          * send a new TXPOWER command or we won't be able to Tx any frames */
 332         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 333         if (ret) {
 334                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 335                 return ret;
 336         }
 337
 338         /* Add the broadcast address so we can send broadcast frames */
 339         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 340                                                 IWL_INVALID_STATION) {
 341                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 342                 return -EIO;
 343         }
 344
 345         /* If we have set the ASSOC_MSK and we are in BSS mode then
 346          * add the IWL_AP_ID to the station rate table */
 347         if (new_assoc && (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 348                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 349                     == IWL_INVALID_STATION) {
 350                         IWL_ERROR("Error adding AP address for transmit.\n");
 351                         return -EIO;
 352                 }
 353                 priv->assoc_station_added = 1;
 354                 if (priv->default_wep_key &&
 355                     iwl_send_static_wepkey_cmd(priv, 0))
 356                         IWL_ERROR("Could not send WEP static key.\n");
 357
 358                 /* Apply the new configuration
 359                  * RXON assoc doesn't clear the station table in uCode,
 360                  */
 361                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 362                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 363                 if (ret) {
 364                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 365                         return ret;
 366                 }
 367                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 368         }
 369
 370         return 0;
 371 }
 372
 373 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 374 {
 375
 376         iwl_set_rxon_chain(priv);
 377         iwl4965_commit_rxon(priv);
 378 }
 379
 380 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 381 {
 382         struct iwl4965_bt_cmd bt_cmd = {
 383                 .flags = 3,
 384                 .lead_time = 0xAA,
 385                 .max_kill = 1,
 386                 .kill_ack_mask = 0,
 387                 .kill_cts_mask = 0,
 388         };
 389
 390         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 391                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 392 }
 393
 394 static void iwl_clear_free_frames(struct iwl_priv *priv)
 395 {
 396         struct list_head *element;
 397
 398         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 399                        priv->frames_count);
 400
 401         while (!list_empty(&priv->free_frames)) {
 402                 element = priv->free_frames.next;
 403                 list_del(element);
 404                 kfree(list_entry(element, struct iwl_frame, list));
 405                 priv->frames_count--;
 406         }
 407
 408         if (priv->frames_count) {
 409                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 410                             priv->frames_count);
 411                 priv->frames_count = 0;
 412         }
 413 }
 414
 415 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 416 {
 417         struct iwl_frame *frame;
 418         struct list_head *element;
 419         if (list_empty(&priv->free_frames)) {
 420                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 421                 if (!frame) {
 422                         IWL_ERROR("Could not allocate frame!\n");
 423                         return NULL;
 424                 }
 425
 426                 priv->frames_count++;
 427                 return frame;
 428         }
 429
 430         element = priv->free_frames.next;
 431         list_del(element);
 432         return list_entry(element, struct iwl_frame, list);
 433 }
 434
 435 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 436 {
 437         memset(frame, 0, sizeof(*frame));
 438         list_add(&frame->list, &priv->free_frames);
 439 }
 440
 441 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 442                                 struct ieee80211_hdr *hdr,
 443                                 const u8 *dest, int left)
 444 {
 445
 446         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 447             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 448              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 449                 return 0;
 450
 451         if (priv->ibss_beacon->len > left)
 452                 return 0;
 453
 454         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 455
 456         return priv->ibss_beacon->len;
 457 }
 458
 459 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 460 {
 461         int i;
 462         int rate_mask;
 463
 464         /* Set rate mask*/
 465         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 466                 rate_mask = priv->active_rate_basic & 0xF;
 467         else
 468                 rate_mask = priv->active_rate_basic & 0xFF0;
 469
 470         /* Find lowest valid rate */
 471         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 472                                         i = iwl_rates[i].next_ieee) {
 473                 if (rate_mask & (1 << i))
 474                         return iwl_rates[i].plcp;
 475         }
 476
 477         /* No valid rate was found. Assign the lowest one */
 478         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 479                 return IWL_RATE_1M_PLCP;
 480         else
 481                 return IWL_RATE_6M_PLCP;
 482 }
 483
 484 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 485 {
 486         struct iwl_frame *frame;
 487         unsigned int frame_size;
 488         int rc;
 489         u8 rate;
 490
 491         frame = iwl_get_free_frame(priv);
 492
 493         if (!frame) {
 494                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 495                           "command.\n");
 496                 return -ENOMEM;
 497         }
 498
 499         rate = iwl4965_rate_get_lowest_plcp(priv);
 500
 501         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 502
 503         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 504                               &frame->u.cmd[0]);
 505
 506         iwl_free_frame(priv, frame);
 507
 508         return rc;
 509 }
 510
 511 /******************************************************************************
 512  *
 513  * Misc. internal state and helper functions
 514  *
 515  ******************************************************************************/
 516
 517 static void iwl4965_ht_conf(struct iwl_priv *priv,
 518                             struct ieee80211_bss_conf *bss_conf)
 519 {
 520         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 521         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 522         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 523
 524         IWL_DEBUG_MAC80211("enter: \n");
 525
 526         iwl_conf->is_ht = bss_conf->assoc_ht;
 527
 528         if (!iwl_conf->is_ht)
 529                 return;
 530
 531         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 532
 533         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 534                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 535         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 536                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 537
 538         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 539         iwl_conf->max_amsdu_size =
 540                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 541
 542         iwl_conf->supported_chan_width =
 543                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 544         iwl_conf->extension_chan_offset =
 545                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 546         /* If no above or below channel supplied disable FAT channel */
 547         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 548             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 549                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 550                 iwl_conf->supported_chan_width = 0;
 551         }
 552
 553         iwl_conf->tx_mimo_ps_mode =
 554                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 555         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 556
 557         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 558         iwl_conf->tx_chan_width =
 559                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 560         iwl_conf->ht_protection =
 561                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 562         iwl_conf->non_GF_STA_present =
 563                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 564
 565         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 566         IWL_DEBUG_MAC80211("leave\n");
 567 }
 568
 569 /*
 570  * QoS  support
 571 */
 572 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 573                                        struct iwl4965_qosparam_cmd *qos)
 574 {
 575
 576         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 577                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 578 }
 579
 580 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 581 {
 582         unsigned long flags;
 583
 584         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 585                 return;
 586
 587         if (!priv->qos_data.qos_enable)
 588                 return;
 589
 590         spin_lock_irqsave(&priv->lock, flags);
 591         priv->qos_data.def_qos_parm.qos_flags = 0;
 592
 593         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 594             !priv->qos_data.qos_cap.q_AP.txop_request)
 595                 priv->qos_data.def_qos_parm.qos_flags |=
 596                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 597         if (priv->qos_data.qos_active)
 598                 priv->qos_data.def_qos_parm.qos_flags |=
 599                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 600
 601         if (priv->current_ht_config.is_ht)
 602                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 603
 604         spin_unlock_irqrestore(&priv->lock, flags);
 605
 606         if (force || iwl_is_associated(priv)) {
 607                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 608                                 priv->qos_data.qos_active,
 609                                 priv->qos_data.def_qos_parm.qos_flags);
 610
 611                 iwl4965_send_qos_params_command(priv,
 612                                 &(priv->qos_data.def_qos_parm));
 613         }
 614 }
 615
 616 #define MAX_UCODE_BEACON_INTERVAL       4096
 617 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 618
 619 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 620 {
 621         u16 new_val = 0;
 622         u16 beacon_factor = 0;
 623
 624         beacon_factor =
 625             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 626                 / MAX_UCODE_BEACON_INTERVAL;
 627         new_val = beacon_val / beacon_factor;
 628
 629         return cpu_to_le16(new_val);
 630 }
 631
 632 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 633 {
 634         u64 interval_tm_unit;
 635         u64 tsf, result;
 636         unsigned long flags;
 637         struct ieee80211_conf *conf = NULL;
 638         u16 beacon_int = 0;
 639
 640         conf = ieee80211_get_hw_conf(priv->hw);
 641
 642         spin_lock_irqsave(&priv->lock, flags);
 643         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 644         priv->rxon_timing.timestamp.dw[0] =
 645                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 646
 647         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 648
 649         tsf = priv->timestamp;
 650
 651         beacon_int = priv->beacon_int;
 652         spin_unlock_irqrestore(&priv->lock, flags);
 653
 654         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 655                 if (beacon_int == 0) {
 656                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 657                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 658                 } else {
 659                         priv->rxon_timing.beacon_interval =
 660                                 cpu_to_le16(beacon_int);
 661                         priv->rxon_timing.beacon_interval =
 662                             iwl4965_adjust_beacon_interval(
 663                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 664                 }
 665
 666                 priv->rxon_timing.atim_window = 0;
 667         } else {
 668                 priv->rxon_timing.beacon_interval =
 669                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 670                 /* TODO: we need to get atim_window from upper stack
 671                  * for now we set to 0 */
 672                 priv->rxon_timing.atim_window = 0;
 673         }
 674
 675         interval_tm_unit =
 676                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 677         result = do_div(tsf, interval_tm_unit);
 678         priv->rxon_timing.beacon_init_val =
 679             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 680
 681         IWL_DEBUG_ASSOC
 682             ("beacon interval %d beacon timer %d beacon tim %d\n",
 683                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 684                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 685                 le16_to_cpu(priv->rxon_timing.atim_window));
 686 }
 687
 688 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 689                                    enum ieee80211_band band)
 690 {
 691         if (band == IEEE80211_BAND_5GHZ) {
 692                 priv->staging_rxon.flags &=
 693                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 694                       | RXON_FLG_CCK_MSK);
 695                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 696         } else {
 697                 /* Copied from iwl4965_post_associate() */
 698                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 699                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 700                 else
 701                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 702
 703                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 704                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 705
 706                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 707                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 708                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 709         }
 710 }
 711
 712 /*
 713  * initialize rxon structure with default values from eeprom
 714  */
 715 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 716 {
 717         const struct iwl_channel_info *ch_info;
 718
 719         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 720
 721         switch (priv->iw_mode) {
 722         case IEEE80211_IF_TYPE_AP:
 723                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 724                 break;
 725
 726         case IEEE80211_IF_TYPE_STA:
 727                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 728                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 729                 break;
 730
 731         case IEEE80211_IF_TYPE_IBSS:
 732                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 733                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 734                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 735                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 736                 break;
 737
 738         case IEEE80211_IF_TYPE_MNTR:
 739                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 740                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 741                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 742                 break;
 743         default:
 744                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 745                 break;
 746         }
 747
 748 #if 0
 749         /* TODO:  Figure out when short_preamble would be set and cache from
 750          * that */
 751         if (!hw_to_local(priv->hw)->short_preamble)
 752                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 753         else
 754                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 755 #endif
 756
 757         ch_info = iwl_get_channel_info(priv, priv->band,
 758                                        le16_to_cpu(priv->staging_rxon.channel));
 759
 760         if (!ch_info)
 761                 ch_info = &priv->channel_info[0];
 762
 763         /*
 764          * in some case A channels are all non IBSS
 765          * in this case force B/G channel
 766          */
 767         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 768             !(is_channel_ibss(ch_info)))
 769                 ch_info = &priv->channel_info[0];
 770
 771         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 772         priv->band = ch_info->band;
 773
 774         iwl_set_flags_for_band(priv, priv->band);
 775
 776         priv->staging_rxon.ofdm_basic_rates =
 777             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 778         priv->staging_rxon.cck_basic_rates =
 779             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 780
 781         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 782                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 783         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 784         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 785         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 786         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 787         iwl_set_rxon_chain(priv);
 788 }
 789
 790 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 791 {
 792         priv->iw_mode = mode;
 793
 794         /* init channel/phymode to values given at driver init */
 795         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 796
 797         iwl4965_connection_init_rx_config(priv);
 798         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 799
 800         iwl_clear_stations_table(priv);
 801
 802         /* dont commit rxon if rf-kill is on*/
 803         if (!iwl_is_ready_rf(priv))
 804                 return -EAGAIN;
 805
 806         cancel_delayed_work(&priv->scan_check);
 807         if (iwl_scan_cancel_timeout(priv, 100)) {
 808                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 809                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 810                 return -EAGAIN;
 811         }
 812
 813         iwl4965_commit_rxon(priv);
 814
 815         return 0;
 816 }
 817
 818 static void iwl4965_set_rate(struct iwl_priv *priv)
 819 {
 820         const struct ieee80211_supported_band *hw = NULL;
 821         struct ieee80211_rate *rate;
 822         int i;
 823
 824         hw = iwl_get_hw_mode(priv, priv->band);
 825         if (!hw) {
 826                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 827                 return;
 828         }
 829
 830         priv->active_rate = 0;
 831         priv->active_rate_basic = 0;
 832
 833         for (i = 0; i < hw->n_bitrates; i++) {
 834                 rate = &(hw->bitrates[i]);
 835                 if (rate->hw_value < IWL_RATE_COUNT)
 836                         priv->active_rate |= (1 << rate->hw_value);
 837         }
 838
 839         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 840                        priv->active_rate, priv->active_rate_basic);
 841
 842         /*
 843          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 844          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 845          * OFDM
 846          */
 847         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 848                 priv->staging_rxon.cck_basic_rates =
 849                     ((priv->active_rate_basic &
 850                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 851         else
 852                 priv->staging_rxon.cck_basic_rates =
 853                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 854
 855         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 856                 priv->staging_rxon.ofdm_basic_rates =
 857                     ((priv->active_rate_basic &
 858                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 859                       IWL_FIRST_OFDM_RATE) & 0xFF;
 860         else
 861                 priv->staging_rxon.ofdm_basic_rates =
 862                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 863 }
 864
 865 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 866
 867 #include "iwl-spectrum.h"
 868
 869 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 870 #define BEACON_TIME_MASK_HIGH   0xFF000000
 871 #define TIME_UNIT               1024
 872
 873 /*
 874  * extended beacon time format
 875  * time in usec will be changed into a 32-bit value in 8:24 format
 876  * the high 1 byte is the beacon counts
 877  * the lower 3 bytes is the time in usec within one beacon interval
 878  */
 879
 880 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 881 {
 882         u32 quot;
 883         u32 rem;
 884         u32 interval = beacon_interval * 1024;
 885
 886         if (!interval || !usec)
 887                 return 0;
 888
 889         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 890         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 891
 892         return (quot << 24) + rem;
 893 }
 894
 895 /* base is usually what we get from ucode with each received frame,
 896  * the same as HW timer counter counting down
 897  */
 898
 899 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 900 {
 901         u32 base_low = base & BEACON_TIME_MASK_LOW;
 902         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 903         u32 interval = beacon_interval * TIME_UNIT;
 904         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 905             (addon & BEACON_TIME_MASK_HIGH);
 906
 907         if (base_low > addon_low)
 908                 res += base_low - addon_low;
 909         else if (base_low < addon_low) {
 910                 res += interval + base_low - addon_low;
 911                 res += (1 << 24);
 912         } else
 913                 res += (1 << 24);
 914
 915         return cpu_to_le32(res);
 916 }
 917
 918 static int iwl4965_get_measurement(struct iwl_priv *priv,
 919                                struct ieee80211_measurement_params *params,
 920                                u8 type)
 921 {
 922         struct iwl4965_spectrum_cmd spectrum;
 923         struct iwl_rx_packet *res;
 924         struct iwl_host_cmd cmd = {
 925                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 926                 .data = (void *)&spectrum,
 927                 .meta.flags = CMD_WANT_SKB,
 928         };
 929         u32 add_time = le64_to_cpu(params->start_time);
 930         int rc;
 931         int spectrum_resp_status;
 932         int duration = le16_to_cpu(params->duration);
 933
 934         if (iwl_is_associated(priv))
 935                 add_time =
 936                     iwl4965_usecs_to_beacons(
 937                         le64_to_cpu(params->start_time) - priv->last_tsf,
 938                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 939
 940         memset(&spectrum, 0, sizeof(spectrum));
 941
 942         spectrum.channel_count = cpu_to_le16(1);
 943         spectrum.flags =
 944             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 945         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 946         cmd.len = sizeof(spectrum);
 947         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 948
 949         if (iwl_is_associated(priv))
 950                 spectrum.start_time =
 951                     iwl4965_add_beacon_time(priv->last_beacon_time,
 952                                 add_time,
 953                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 954         else
 955                 spectrum.start_time = 0;
 956
 957         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 958         spectrum.channels[0].channel = params->channel;
 959         spectrum.channels[0].type = type;
 960         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 961                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 962                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 963
 964         rc = iwl_send_cmd_sync(priv, &cmd);
 965         if (rc)
 966                 return rc;
 967
 968         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 969         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 970                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 971                 rc = -EIO;
 972         }
 973
 974         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 975         switch (spectrum_resp_status) {
 976         case 0:         /* Command will be handled */
 977                 if (res->u.spectrum.id != 0xff) {
 978                         IWL_DEBUG_INFO
 979                             ("Replaced existing measurement: %d\n",
 980                              res->u.spectrum.id);
 981                         priv->measurement_status &= ~MEASUREMENT_READY;
 982                 }
 983                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 984                 rc = 0;
 985                 break;
 986
 987         case 1:         /* Command will not be handled */
 988                 rc = -EAGAIN;
 989                 break;
 990         }
 991
 992         dev_kfree_skb_any(cmd.meta.u.skb);
 993
 994         return rc;
 995 }
 996 #endif
 997
 998 /******************************************************************************
 999  *
1000  * Generic RX handler implementations
1001  *
1002  ******************************************************************************/
1003 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1004                                 struct iwl_rx_mem_buffer *rxb)
1005 {
1006         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1007         struct iwl_alive_resp *palive;
1008         struct delayed_work *pwork;
1009
1010         palive = &pkt->u.alive_frame;
1011
1012         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1013                        "0x%01X 0x%01X\n",
1014                        palive->is_valid, palive->ver_type,
1015                        palive->ver_subtype);
1016
1017         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1018                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1019                 memcpy(&priv->card_alive_init,
1020                        &pkt->u.alive_frame,
1021                        sizeof(struct iwl_init_alive_resp));
1022                 pwork = &priv->init_alive_start;
1023         } else {
1024                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1025                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1026                        sizeof(struct iwl_alive_resp));
1027                 pwork = &priv->alive_start;
1028         }
1029
1030         /* We delay the ALIVE response by 5ms to
1031          * give the HW RF Kill time to activate... */
1032         if (palive->is_valid == UCODE_VALID_OK)
1033                 queue_delayed_work(priv->workqueue, pwork,
1034                                    msecs_to_jiffies(5));
1035         else
1036                 IWL_WARNING("uCode did not respond OK.\n");
1037 }
1038
1039 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1040                                    struct iwl_rx_mem_buffer *rxb)
1041 {
1042         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1043
1044         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1045                 "seq 0x%04X ser 0x%08X\n",
1046                 le32_to_cpu(pkt->u.err_resp.error_type),
1047                 get_cmd_string(pkt->u.err_resp.cmd_id),
1048                 pkt->u.err_resp.cmd_id,
1049                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1050                 le32_to_cpu(pkt->u.err_resp.error_info));
1051 }
1052
1053 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1054
1055 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1056 {
1057         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1058         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1059         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1060         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1061                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1062         rxon->channel = csa->channel;
1063         priv->staging_rxon.channel = csa->channel;
1064 }
1065
1066 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1067                                           struct iwl_rx_mem_buffer *rxb)
1068 {
1069 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1070         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1071         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1072
1073         if (!report->state) {
1074                 IWL_DEBUG(IWL_DL_11H,
1075                         "Spectrum Measure Notification: Start\n");
1076                 return;
1077         }
1078
1079         memcpy(&priv->measure_report, report, sizeof(*report));
1080         priv->measurement_status |= MEASUREMENT_READY;
1081 #endif
1082 }
1083
1084 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1085                                       struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLWIFI_DEBUG
1088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1090         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1091                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1092 #endif
1093 }
1094
1095 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1096                                              struct iwl_rx_mem_buffer *rxb)
1097 {
1098         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1099         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1100                         "notification for %s:\n",
1101                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1102         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1103 }
1104
1105 static void iwl4965_bg_beacon_update(struct work_struct *work)
1106 {
1107         struct iwl_priv *priv =
1108                 container_of(work, struct iwl_priv, beacon_update);
1109         struct sk_buff *beacon;
1110
1111         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1112         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1113
1114         if (!beacon) {
1115                 IWL_ERROR("update beacon failed\n");
1116                 return;
1117         }
1118
1119         mutex_lock(&priv->mutex);
1120         /* new beacon skb is allocated every time; dispose previous.*/
1121         if (priv->ibss_beacon)
1122                 dev_kfree_skb(priv->ibss_beacon);
1123
1124         priv->ibss_beacon = beacon;
1125         mutex_unlock(&priv->mutex);
1126
1127         iwl4965_send_beacon_cmd(priv);
1128 }
1129
1130 /**
1131  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1132  *
1133  * This callback is provided in order to send a statistics request.
1134  *
1135  * This timer function is continually reset to execute within
1136  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1137  * was received.  We need to ensure we receive the statistics in order
1138  * to update the temperature used for calibrating the TXPOWER.
1139  */
1140 static void iwl4965_bg_statistics_periodic(unsigned long data)
1141 {
1142         struct iwl_priv *priv = (struct iwl_priv *)data;
1143
1144         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1145                 return;
1146
1147         iwl_send_statistics_request(priv, CMD_ASYNC);
1148 }
1149
1150 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1151                                 struct iwl_rx_mem_buffer *rxb)
1152 {
1153 #ifdef CONFIG_IWLWIFI_DEBUG
1154         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1155         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1156         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1157
1158         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1159                 "tsf %d %d rate %d\n",
1160                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1161                 beacon->beacon_notify_hdr.failure_frame,
1162                 le32_to_cpu(beacon->ibss_mgr_status),
1163                 le32_to_cpu(beacon->high_tsf),
1164                 le32_to_cpu(beacon->low_tsf), rate);
1165 #endif
1166
1167         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1168             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1169                 queue_work(priv->workqueue, &priv->beacon_update);
1170 }
1171
1172 /* Handle notification from uCode that card's power state is changing
1173  * due to software, hardware, or critical temperature RFKILL */
1174 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1175                                     struct iwl_rx_mem_buffer *rxb)
1176 {
1177         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1178         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1179         unsigned long status = priv->status;
1180
1181         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1182                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1183                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1184
1185         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1186                      RF_CARD_DISABLED)) {
1187
1188                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1189                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1190
1191                 if (!iwl_grab_nic_access(priv)) {
1192                         iwl_write_direct32(
1193                                 priv, HBUS_TARG_MBX_C,
1194                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1195
1196                         iwl_release_nic_access(priv);
1197                 }
1198
1199                 if (!(flags & RXON_CARD_DISABLED)) {
1200                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1201                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1202                         if (!iwl_grab_nic_access(priv)) {
1203                                 iwl_write_direct32(
1204                                         priv, HBUS_TARG_MBX_C,
1205                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1206
1207                                 iwl_release_nic_access(priv);
1208                         }
1209                 }
1210
1211                 if (flags & RF_CARD_DISABLED) {
1212                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1213                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1214                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1215                         if (!iwl_grab_nic_access(priv))
1216                                 iwl_release_nic_access(priv);
1217                 }
1218         }
1219
1220         if (flags & HW_CARD_DISABLED)
1221                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1222         else
1223                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1224
1225
1226         if (flags & SW_CARD_DISABLED)
1227                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1228         else
1229                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1230
1231         if (!(flags & RXON_CARD_DISABLED))
1232                 iwl_scan_cancel(priv);
1233
1234         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1235              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1236             (test_bit(STATUS_RF_KILL_SW, &status) !=
1237              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1238                 queue_work(priv->workqueue, &priv->rf_kill);
1239         else
1240                 wake_up_interruptible(&priv->wait_command_queue);
1241 }
1242
1243 /**
1244  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1245  *
1246  * Setup the RX handlers for each of the reply types sent from the uCode
1247  * to the host.
1248  *
1249  * This function chains into the hardware specific files for them to setup
1250  * any hardware specific handlers as well.
1251  */
1252 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1253 {
1254         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1255         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1256         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1257         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1258             iwl4965_rx_spectrum_measure_notif;
1259         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1260         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1261             iwl4965_rx_pm_debug_statistics_notif;
1262         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1263
1264         /*
1265          * The same handler is used for both the REPLY to a discrete
1266          * statistics request from the host as well as for the periodic
1267          * statistics notifications (after received beacons) from the uCode.
1268          */
1269         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1270         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1271
1272         iwl_setup_rx_scan_handlers(priv);
1273
1274         /* status change handler */
1275         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1276
1277         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1278             iwl_rx_missed_beacon_notif;
1279         /* Rx handlers */
1280         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1281         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1282         /* block ack */
1283         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1284         /* Set up hardware specific Rx handlers */
1285         priv->cfg->ops->lib->rx_handler_setup(priv);
1286 }
1287
1288 /*
1289  * this should be called while priv->lock is locked
1290 */
1291 static void __iwl_rx_replenish(struct iwl_priv *priv)
1292 {
1293         iwl_rx_allocate(priv);
1294         iwl_rx_queue_restock(priv);
1295 }
1296
1297
1298 /**
1299  * iwl_rx_handle - Main entry function for receiving responses from uCode
1300  *
1301  * Uses the priv->rx_handlers callback function array to invoke
1302  * the appropriate handlers, including command responses,
1303  * frame-received notifications, and other notifications.
1304  */
1305 void iwl_rx_handle(struct iwl_priv *priv)
1306 {
1307         struct iwl_rx_mem_buffer *rxb;
1308         struct iwl_rx_packet *pkt;
1309         struct iwl_rx_queue *rxq = &priv->rxq;
1310         u32 r, i;
1311         int reclaim;
1312         unsigned long flags;
1313         u8 fill_rx = 0;
1314         u32 count = 8;
1315
1316         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1317          * buffer that the driver may process (last buffer filled by ucode). */
1318         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1319         i = rxq->read;
1320
1321         /* Rx interrupt, but nothing sent from uCode */
1322         if (i == r)
1323                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1324
1325         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1326                 fill_rx = 1;
1327
1328         while (i != r) {
1329                 rxb = rxq->queue[i];
1330
1331                 /* If an RXB doesn't have a Rx queue slot associated with it,
1332                  * then a bug has been introduced in the queue refilling
1333                  * routines -- catch it here */
1334                 BUG_ON(rxb == NULL);
1335
1336                 rxq->queue[i] = NULL;
1337
1338                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1339                                             priv->hw_params.rx_buf_size,
1340                                             PCI_DMA_FROMDEVICE);
1341                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1342
1343                 /* Reclaim a command buffer only if this packet is a response
1344                  *   to a (driver-originated) command.
1345                  * If the packet (e.g. Rx frame) originated from uCode,
1346                  *   there is no command buffer to reclaim.
1347                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1348                  *   but apparently a few don't get set; catch them here. */
1349                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1350                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1351                         (pkt->hdr.cmd != REPLY_RX) &&
1352                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1353                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1354                         (pkt->hdr.cmd != REPLY_TX);
1355
1356                 /* Based on type of command response or notification,
1357                  *   handle those that need handling via function in
1358                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1359                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1360                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1361                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1362                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1363                 } else {
1364                         /* No handling needed */
1365                         IWL_DEBUG(IWL_DL_RX,
1366                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1367                                 r, i, get_cmd_string(pkt->hdr.cmd),
1368                                 pkt->hdr.cmd);
1369                 }
1370
1371                 if (reclaim) {
1372                         /* Invoke any callbacks, transfer the skb to caller, and
1373                          * fire off the (possibly) blocking iwl_send_cmd()
1374                          * as we reclaim the driver command queue */
1375                         if (rxb && rxb->skb)
1376                                 iwl_tx_cmd_complete(priv, rxb);
1377                         else
1378                                 IWL_WARNING("Claim null rxb?\n");
1379                 }
1380
1381                 /* For now we just don't re-use anything.  We can tweak this
1382                  * later to try and re-use notification packets and SKBs that
1383                  * fail to Rx correctly */
1384                 if (rxb->skb != NULL) {
1385                         priv->alloc_rxb_skb--;
1386                         dev_kfree_skb_any(rxb->skb);
1387                         rxb->skb = NULL;
1388                 }
1389
1390                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1391                                  priv->hw_params.rx_buf_size,
1392                                  PCI_DMA_FROMDEVICE);
1393                 spin_lock_irqsave(&rxq->lock, flags);
1394                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1395                 spin_unlock_irqrestore(&rxq->lock, flags);
1396                 i = (i + 1) & RX_QUEUE_MASK;
1397                 /* If there are a lot of unused frames,
1398                  * restock the Rx queue so ucode wont assert. */
1399                 if (fill_rx) {
1400                         count++;
1401                         if (count >= 8) {
1402                                 priv->rxq.read = i;
1403                                 __iwl_rx_replenish(priv);
1404                                 count = 0;
1405                         }
1406                 }
1407         }
1408
1409         /* Backtrack one entry */
1410         priv->rxq.read = i;
1411         iwl_rx_queue_restock(priv);
1412 }
1413
1414 #ifdef CONFIG_IWLWIFI_DEBUG
1415 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1416 {
1417         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1418         DECLARE_MAC_BUF(mac);
1419
1420         IWL_DEBUG_RADIO("RX CONFIG:\n");
1421         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1422         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1423         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1424         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1425                         le32_to_cpu(rxon->filter_flags));
1426         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1427         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1428                         rxon->ofdm_basic_rates);
1429         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1430         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1431                         print_mac(mac, rxon->node_addr));
1432         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1433                         print_mac(mac, rxon->bssid_addr));
1434         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1435 }
1436 #endif
1437
1438 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1439 {
1440         IWL_DEBUG_ISR("Enabling interrupts\n");
1441         set_bit(STATUS_INT_ENABLED, &priv->status);
1442         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1443 }
1444
1445 /* call this function to flush any scheduled tasklet */
1446 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1447 {
1448         /* wait to make sure we flush pedding tasklet*/
1449         synchronize_irq(priv->pci_dev->irq);
1450         tasklet_kill(&priv->irq_tasklet);
1451 }
1452
1453 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1454 {
1455         clear_bit(STATUS_INT_ENABLED, &priv->status);
1456
1457         /* disable interrupts from uCode/NIC to host */
1458         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1459
1460         /* acknowledge/clear/reset any interrupts still pending
1461          * from uCode or flow handler (Rx/Tx DMA) */
1462         iwl_write32(priv, CSR_INT, 0xffffffff);
1463         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1464         IWL_DEBUG_ISR("Disabled interrupts\n");
1465 }
1466
1467
1468 /**
1469  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1470  */
1471 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1472 {
1473         /* Set the FW error flag -- cleared on iwl4965_down */
1474         set_bit(STATUS_FW_ERROR, &priv->status);
1475
1476         /* Cancel currently queued command. */
1477         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1478
1479 #ifdef CONFIG_IWLWIFI_DEBUG
1480         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1481                 iwl_dump_nic_error_log(priv);
1482                 iwl_dump_nic_event_log(priv);
1483                 iwl4965_print_rx_config_cmd(priv);
1484         }
1485 #endif
1486
1487         wake_up_interruptible(&priv->wait_command_queue);
1488
1489         /* Keep the restart process from trying to send host
1490          * commands by clearing the INIT status bit */
1491         clear_bit(STATUS_READY, &priv->status);
1492
1493         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1494                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1495                           "Restarting adapter due to uCode error.\n");
1496
1497                 if (iwl_is_associated(priv)) {
1498                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1499                                sizeof(priv->recovery_rxon));
1500                         priv->error_recovering = 1;
1501                 }
1502                 if (priv->cfg->mod_params->restart_fw)
1503                         queue_work(priv->workqueue, &priv->restart);
1504         }
1505 }
1506
1507 static void iwl4965_error_recovery(struct iwl_priv *priv)
1508 {
1509         unsigned long flags;
1510
1511         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1512                sizeof(priv->staging_rxon));
1513         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1514         iwl4965_commit_rxon(priv);
1515
1516         iwl_rxon_add_station(priv, priv->bssid, 1);
1517
1518         spin_lock_irqsave(&priv->lock, flags);
1519         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1520         priv->error_recovering = 0;
1521         spin_unlock_irqrestore(&priv->lock, flags);
1522 }
1523
1524 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1525 {
1526         u32 inta, handled = 0;
1527         u32 inta_fh;
1528         unsigned long flags;
1529 #ifdef CONFIG_IWLWIFI_DEBUG
1530         u32 inta_mask;
1531 #endif
1532
1533         spin_lock_irqsave(&priv->lock, flags);
1534
1535         /* Ack/clear/reset pending uCode interrupts.
1536          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1537          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1538         inta = iwl_read32(priv, CSR_INT);
1539         iwl_write32(priv, CSR_INT, inta);
1540
1541         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1542          * Any new interrupts that happen after this, either while we're
1543          * in this tasklet, or later, will show up in next ISR/tasklet. */
1544         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1545         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1546
1547 #ifdef CONFIG_IWLWIFI_DEBUG
1548         if (priv->debug_level & IWL_DL_ISR) {
1549                 /* just for debug */
1550                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1551                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1552                               inta, inta_mask, inta_fh);
1553         }
1554 #endif
1555
1556         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1557          * atomic, make sure that inta covers all the interrupts that
1558          * we've discovered, even if FH interrupt came in just after
1559          * reading CSR_INT. */
1560         if (inta_fh & CSR49_FH_INT_RX_MASK)
1561                 inta |= CSR_INT_BIT_FH_RX;
1562         if (inta_fh & CSR49_FH_INT_TX_MASK)
1563                 inta |= CSR_INT_BIT_FH_TX;
1564
1565         /* Now service all interrupt bits discovered above. */
1566         if (inta & CSR_INT_BIT_HW_ERR) {
1567                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1568
1569                 /* Tell the device to stop sending interrupts */
1570                 iwl4965_disable_interrupts(priv);
1571
1572                 iwl4965_irq_handle_error(priv);
1573
1574                 handled |= CSR_INT_BIT_HW_ERR;
1575
1576                 spin_unlock_irqrestore(&priv->lock, flags);
1577
1578                 return;
1579         }
1580
1581 #ifdef CONFIG_IWLWIFI_DEBUG
1582         if (priv->debug_level & (IWL_DL_ISR)) {
1583                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1584                 if (inta & CSR_INT_BIT_SCD)
1585                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1586                                       "the frame/frames.\n");
1587
1588                 /* Alive notification via Rx interrupt will do the real work */
1589                 if (inta & CSR_INT_BIT_ALIVE)
1590                         IWL_DEBUG_ISR("Alive interrupt\n");
1591         }
1592 #endif
1593         /* Safely ignore these bits for debug checks below */
1594         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1595
1596         /* HW RF KILL switch toggled */
1597         if (inta & CSR_INT_BIT_RF_KILL) {
1598                 int hw_rf_kill = 0;
1599                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1600                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1601                         hw_rf_kill = 1;
1602
1603                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1604                                 hw_rf_kill ? "disable radio":"enable radio");
1605
1606                 /* Queue restart only if RF_KILL switch was set to "kill"
1607                  *   when we loaded driver, and is now set to "enable".
1608                  * After we're Alive, RF_KILL gets handled by
1609                  *   iwl4965_rx_card_state_notif() */
1610                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1611                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1612                         queue_work(priv->workqueue, &priv->restart);
1613                 }
1614
1615                 handled |= CSR_INT_BIT_RF_KILL;
1616         }
1617
1618         /* Chip got too hot and stopped itself */
1619         if (inta & CSR_INT_BIT_CT_KILL) {
1620                 IWL_ERROR("Microcode CT kill error detected.\n");
1621                 handled |= CSR_INT_BIT_CT_KILL;
1622         }
1623
1624         /* Error detected by uCode */
1625         if (inta & CSR_INT_BIT_SW_ERR) {
1626                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1627                           inta);
1628                 iwl4965_irq_handle_error(priv);
1629                 handled |= CSR_INT_BIT_SW_ERR;
1630         }
1631
1632         /* uCode wakes up after power-down sleep */
1633         if (inta & CSR_INT_BIT_WAKEUP) {
1634                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1635                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1636                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1637                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1638                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1639                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1640                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1641                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1642
1643                 handled |= CSR_INT_BIT_WAKEUP;
1644         }
1645
1646         /* All uCode command responses, including Tx command responses,
1647          * Rx "responses" (frame-received notification), and other
1648          * notifications from uCode come through here*/
1649         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1650                 iwl_rx_handle(priv);
1651                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1652         }
1653
1654         if (inta & CSR_INT_BIT_FH_TX) {
1655                 IWL_DEBUG_ISR("Tx interrupt\n");
1656                 handled |= CSR_INT_BIT_FH_TX;
1657                 /* FH finished to write, send event */
1658                 priv->ucode_write_complete = 1;
1659                 wake_up_interruptible(&priv->wait_command_queue);
1660         }
1661
1662         if (inta & ~handled)
1663                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1664
1665         if (inta & ~CSR_INI_SET_MASK) {
1666                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1667                          inta & ~CSR_INI_SET_MASK);
1668                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1669         }
1670
1671         /* Re-enable all interrupts */
1672         /* only Re-enable if diabled by irq */
1673         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1674                 iwl4965_enable_interrupts(priv);
1675
1676 #ifdef CONFIG_IWLWIFI_DEBUG
1677         if (priv->debug_level & (IWL_DL_ISR)) {
1678                 inta = iwl_read32(priv, CSR_INT);
1679                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1680                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1681                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1682                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1683         }
1684 #endif
1685         spin_unlock_irqrestore(&priv->lock, flags);
1686 }
1687
1688 static irqreturn_t iwl4965_isr(int irq, void *data)
1689 {
1690         struct iwl_priv *priv = data;
1691         u32 inta, inta_mask;
1692         u32 inta_fh;
1693         if (!priv)
1694                 return IRQ_NONE;
1695
1696         spin_lock(&priv->lock);
1697
1698         /* Disable (but don't clear!) interrupts here to avoid
1699          *    back-to-back ISRs and sporadic interrupts from our NIC.
1700          * If we have something to service, the tasklet will re-enable ints.
1701          * If we *don't* have something, we'll re-enable before leaving here. */
1702         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1703         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1704
1705         /* Discover which interrupts are active/pending */
1706         inta = iwl_read32(priv, CSR_INT);
1707         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1708
1709         /* Ignore interrupt if there's nothing in NIC to service.
1710          * This may be due to IRQ shared with another device,
1711          * or due to sporadic interrupts thrown from our NIC. */
1712         if (!inta && !inta_fh) {
1713                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1714                 goto none;
1715         }
1716
1717         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1718                 /* Hardware disappeared. It might have already raised
1719                  * an interrupt */
1720                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1721                 goto unplugged;
1722         }
1723
1724         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1725                       inta, inta_mask, inta_fh);
1726
1727         inta &= ~CSR_INT_BIT_SCD;
1728
1729         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1730         if (likely(inta || inta_fh))
1731                 tasklet_schedule(&priv->irq_tasklet);
1732
1733  unplugged:
1734         spin_unlock(&priv->lock);
1735         return IRQ_HANDLED;
1736
1737  none:
1738         /* re-enable interrupts here since we don't have anything to service. */
1739         /* only Re-enable if diabled by irq */
1740         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1741                 iwl4965_enable_interrupts(priv);
1742         spin_unlock(&priv->lock);
1743         return IRQ_NONE;
1744 }
1745
1746 /******************************************************************************
1747  *
1748  * uCode download functions
1749  *
1750  ******************************************************************************/
1751
1752 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1753 {
1754         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1755         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1756         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1757         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1758         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1759         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1760 }
1761
1762 static void iwl4965_nic_start(struct iwl_priv *priv)
1763 {
1764         /* Remove all resets to allow NIC to operate */
1765         iwl_write32(priv, CSR_RESET, 0);
1766 }
1767
1768
1769 /**
1770  * iwl4965_read_ucode - Read uCode images from disk file.
1771  *
1772  * Copy into buffers for card to fetch via bus-mastering
1773  */
1774 static int iwl4965_read_ucode(struct iwl_priv *priv)
1775 {
1776         struct iwl_ucode *ucode;
1777         int ret;
1778         const struct firmware *ucode_raw;
1779         const char *name = priv->cfg->fw_name;
1780         u8 *src;
1781         size_t len;
1782         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1783
1784         /* Ask kernel firmware_class module to get the boot firmware off disk.
1785          * request_firmware() is synchronous, file is in memory on return. */
1786         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1787         if (ret < 0) {
1788                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1789                                         name, ret);
1790                 goto error;
1791         }
1792
1793         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1794                        name, ucode_raw->size);
1795
1796         /* Make sure that we got at least our header! */
1797         if (ucode_raw->size < sizeof(*ucode)) {
1798                 IWL_ERROR("File size way too small!\n");
1799                 ret = -EINVAL;
1800                 goto err_release;
1801         }
1802
1803         /* Data from ucode file:  header followed by uCode images */
1804         ucode = (void *)ucode_raw->data;
1805
1806         ver = le32_to_cpu(ucode->ver);
1807         inst_size = le32_to_cpu(ucode->inst_size);
1808         data_size = le32_to_cpu(ucode->data_size);
1809         init_size = le32_to_cpu(ucode->init_size);
1810         init_data_size = le32_to_cpu(ucode->init_data_size);
1811         boot_size = le32_to_cpu(ucode->boot_size);
1812
1813         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1814         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1815                        inst_size);
1816         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1817                        data_size);
1818         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1819                        init_size);
1820         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1821                        init_data_size);
1822         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1823                        boot_size);
1824
1825         /* Verify size of file vs. image size info in file's header */
1826         if (ucode_raw->size < sizeof(*ucode) +
1827                 inst_size + data_size + init_size +
1828                 init_data_size + boot_size) {
1829
1830                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1831                                (int)ucode_raw->size);
1832                 ret = -EINVAL;
1833                 goto err_release;
1834         }
1835
1836         /* Verify that uCode images will fit in card's SRAM */
1837         if (inst_size > priv->hw_params.max_inst_size) {
1838                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1839                                inst_size);
1840                 ret = -EINVAL;
1841                 goto err_release;
1842         }
1843
1844         if (data_size > priv->hw_params.max_data_size) {
1845                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1846                                 data_size);
1847                 ret = -EINVAL;
1848                 goto err_release;
1849         }
1850         if (init_size > priv->hw_params.max_inst_size) {
1851                 IWL_DEBUG_INFO
1852                     ("uCode init instr len %d too large to fit in\n",
1853                       init_size);
1854                 ret = -EINVAL;
1855                 goto err_release;
1856         }
1857         if (init_data_size > priv->hw_params.max_data_size) {
1858                 IWL_DEBUG_INFO
1859                     ("uCode init data len %d too large to fit in\n",
1860                       init_data_size);
1861                 ret = -EINVAL;
1862                 goto err_release;
1863         }
1864         if (boot_size > priv->hw_params.max_bsm_size) {
1865                 IWL_DEBUG_INFO
1866                     ("uCode boot instr len %d too large to fit in\n",
1867                       boot_size);
1868                 ret = -EINVAL;
1869                 goto err_release;
1870         }
1871
1872         /* Allocate ucode buffers for card's bus-master loading ... */
1873
1874         /* Runtime instructions and 2 copies of data:
1875          * 1) unmodified from disk
1876          * 2) backup cache for save/restore during power-downs */
1877         priv->ucode_code.len = inst_size;
1878         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1879
1880         priv->ucode_data.len = data_size;
1881         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1882
1883         priv->ucode_data_backup.len = data_size;
1884         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1885
1886         /* Initialization instructions and data */
1887         if (init_size && init_data_size) {
1888                 priv->ucode_init.len = init_size;
1889                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1890
1891                 priv->ucode_init_data.len = init_data_size;
1892                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1893
1894                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1895                         goto err_pci_alloc;
1896         }
1897
1898         /* Bootstrap (instructions only, no data) */
1899         if (boot_size) {
1900                 priv->ucode_boot.len = boot_size;
1901                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1902
1903                 if (!priv->ucode_boot.v_addr)
1904                         goto err_pci_alloc;
1905         }
1906
1907         /* Copy images into buffers for card's bus-master reads ... */
1908
1909         /* Runtime instructions (first block of data in file) */
1910         src = &ucode->data[0];
1911         len = priv->ucode_code.len;
1912         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1913         memcpy(priv->ucode_code.v_addr, src, len);
1914         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1915                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1916
1917         /* Runtime data (2nd block)
1918          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1919         src = &ucode->data[inst_size];
1920         len = priv->ucode_data.len;
1921         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1922         memcpy(priv->ucode_data.v_addr, src, len);
1923         memcpy(priv->ucode_data_backup.v_addr, src, len);
1924
1925         /* Initialization instructions (3rd block) */
1926         if (init_size) {
1927                 src = &ucode->data[inst_size + data_size];
1928                 len = priv->ucode_init.len;
1929                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1930                                 len);
1931                 memcpy(priv->ucode_init.v_addr, src, len);
1932         }
1933
1934         /* Initialization data (4th block) */
1935         if (init_data_size) {
1936                 src = &ucode->data[inst_size + data_size + init_size];
1937                 len = priv->ucode_init_data.len;
1938                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1939                                len);
1940                 memcpy(priv->ucode_init_data.v_addr, src, len);
1941         }
1942
1943         /* Bootstrap instructions (5th block) */
1944         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1945         len = priv->ucode_boot.len;
1946         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1947         memcpy(priv->ucode_boot.v_addr, src, len);
1948
1949         /* We have our copies now, allow OS release its copies */
1950         release_firmware(ucode_raw);
1951         return 0;
1952
1953  err_pci_alloc:
1954         IWL_ERROR("failed to allocate pci memory\n");
1955         ret = -ENOMEM;
1956         iwl4965_dealloc_ucode_pci(priv);
1957
1958  err_release:
1959         release_firmware(ucode_raw);
1960
1961  error:
1962         return ret;
1963 }
1964
1965 /**
1966  * iwl_alive_start - called after REPLY_ALIVE notification received
1967  *                   from protocol/runtime uCode (initialization uCode's
1968  *                   Alive gets handled by iwl_init_alive_start()).
1969  */
1970 static void iwl_alive_start(struct iwl_priv *priv)
1971 {
1972         int ret = 0;
1973
1974         IWL_DEBUG_INFO("Runtime Alive received.\n");
1975
1976         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1977                 /* We had an error bringing up the hardware, so take it
1978                  * all the way back down so we can try again */
1979                 IWL_DEBUG_INFO("Alive failed.\n");
1980                 goto restart;
1981         }
1982
1983         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1984          * This is a paranoid check, because we would not have gotten the
1985          * "runtime" alive if code weren't properly loaded.  */
1986         if (iwl_verify_ucode(priv)) {
1987                 /* Runtime instruction load was bad;
1988                  * take it all the way back down so we can try again */
1989                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
1990                 goto restart;
1991         }
1992
1993         iwl_clear_stations_table(priv);
1994         ret = priv->cfg->ops->lib->alive_notify(priv);
1995         if (ret) {
1996                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
1997                             ret);
1998                 goto restart;
1999         }
2000
2001         /* After the ALIVE response, we can send host commands to 4965 uCode */
2002         set_bit(STATUS_ALIVE, &priv->status);
2003
2004         if (iwl_is_rfkill(priv))
2005                 return;
2006
2007         ieee80211_wake_queues(priv->hw);
2008
2009         priv->active_rate = priv->rates_mask;
2010         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2011
2012         if (iwl_is_associated(priv)) {
2013                 struct iwl_rxon_cmd *active_rxon =
2014                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2015
2016                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2017                        sizeof(priv->staging_rxon));
2018                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2019         } else {
2020                 /* Initialize our rx_config data */
2021                 iwl4965_connection_init_rx_config(priv);
2022                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2023         }
2024
2025         /* Configure Bluetooth device coexistence support */
2026         iwl4965_send_bt_config(priv);
2027
2028         iwl_reset_run_time_calib(priv);
2029
2030         /* Configure the adapter for unassociated operation */
2031         iwl4965_commit_rxon(priv);
2032
2033         /* At this point, the NIC is initialized and operational */
2034         iwl_rf_kill_ct_config(priv);
2035
2036         iwl_leds_register(priv);
2037
2038         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2039         set_bit(STATUS_READY, &priv->status);
2040         wake_up_interruptible(&priv->wait_command_queue);
2041
2042         if (priv->error_recovering)
2043                 iwl4965_error_recovery(priv);
2044
2045         iwl_power_update_mode(priv, 1);
2046         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2047
2048         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2049                 iwl4965_set_mode(priv, priv->iw_mode);
2050
2051         return;
2052
2053  restart:
2054         queue_work(priv->workqueue, &priv->restart);
2055 }
2056
2057 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2058
2059 static void __iwl4965_down(struct iwl_priv *priv)
2060 {
2061         unsigned long flags;
2062         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2063
2064         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2065
2066         if (!exit_pending)
2067                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2068
2069         iwl_leds_unregister(priv);
2070
2071         iwl_clear_stations_table(priv);
2072
2073         /* Unblock any waiting calls */
2074         wake_up_interruptible_all(&priv->wait_command_queue);
2075
2076         /* Wipe out the EXIT_PENDING status bit if we are not actually
2077          * exiting the module */
2078         if (!exit_pending)
2079                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2080
2081         /* stop and reset the on-board processor */
2082         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2083
2084         /* tell the device to stop sending interrupts */
2085         spin_lock_irqsave(&priv->lock, flags);
2086         iwl4965_disable_interrupts(priv);
2087         spin_unlock_irqrestore(&priv->lock, flags);
2088         iwl_synchronize_irq(priv);
2089
2090         if (priv->mac80211_registered)
2091                 ieee80211_stop_queues(priv->hw);
2092
2093         /* If we have not previously called iwl4965_init() then
2094          * clear all bits but the RF Kill and SUSPEND bits and return */
2095         if (!iwl_is_init(priv)) {
2096                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2097                                         STATUS_RF_KILL_HW |
2098                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2099                                         STATUS_RF_KILL_SW |
2100                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2101                                         STATUS_GEO_CONFIGURED |
2102                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2103                                         STATUS_IN_SUSPEND;
2104                 goto exit;
2105         }
2106
2107         /* ...otherwise clear out all the status bits but the RF Kill and
2108          * SUSPEND bits and continue taking the NIC down. */
2109         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2110                                 STATUS_RF_KILL_HW |
2111                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2112                                 STATUS_RF_KILL_SW |
2113                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2114                                 STATUS_GEO_CONFIGURED |
2115                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2116                                 STATUS_IN_SUSPEND |
2117                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2118                                 STATUS_FW_ERROR;
2119
2120         spin_lock_irqsave(&priv->lock, flags);
2121         iwl_clear_bit(priv, CSR_GP_CNTRL,
2122                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2123         spin_unlock_irqrestore(&priv->lock, flags);
2124
2125         iwl_txq_ctx_stop(priv);
2126         iwl_rxq_stop(priv);
2127
2128         spin_lock_irqsave(&priv->lock, flags);
2129         if (!iwl_grab_nic_access(priv)) {
2130                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2131                                          APMG_CLK_VAL_DMA_CLK_RQT);
2132                 iwl_release_nic_access(priv);
2133         }
2134         spin_unlock_irqrestore(&priv->lock, flags);
2135
2136         udelay(5);
2137
2138         /* FIXME: apm_ops.suspend(priv) */
2139         priv->cfg->ops->lib->apm_ops.reset(priv);
2140         priv->cfg->ops->lib->free_shared_mem(priv);
2141
2142  exit:
2143         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2144
2145         if (priv->ibss_beacon)
2146                 dev_kfree_skb(priv->ibss_beacon);
2147         priv->ibss_beacon = NULL;
2148
2149         /* clear out any free frames */
2150         iwl_clear_free_frames(priv);
2151 }
2152
2153 static void iwl4965_down(struct iwl_priv *priv)
2154 {
2155         mutex_lock(&priv->mutex);
2156         __iwl4965_down(priv);
2157         mutex_unlock(&priv->mutex);
2158
2159         iwl_cancel_deferred_work(priv);
2160 }
2161
2162 #define MAX_HW_RESTARTS 5
2163
2164 static int __iwl4965_up(struct iwl_priv *priv)
2165 {
2166         int i;
2167         int ret;
2168
2169         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2170                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2171                 return -EIO;
2172         }
2173
2174         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2175                 IWL_ERROR("ucode not available for device bringup\n");
2176                 return -EIO;
2177         }
2178
2179         /* If platform's RF_KILL switch is NOT set to KILL */
2180         if (iwl_read32(priv, CSR_GP_CNTRL) &
2181                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2182                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2183         else {
2184                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2185                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2186                         iwl_rfkill_set_hw_state(priv);
2187                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2188                         return -ENODEV;
2189                 }
2190         }
2191
2192         iwl_rfkill_set_hw_state(priv);
2193         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2194
2195         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2196         if (ret) {
2197                 IWL_ERROR("Unable to allocate shared memory\n");
2198                 return ret;
2199         }
2200
2201         ret = iwl_hw_nic_init(priv);
2202         if (ret) {
2203                 IWL_ERROR("Unable to init nic\n");
2204                 return ret;
2205         }
2206
2207         /* make sure rfkill handshake bits are cleared */
2208         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2209         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2210                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2211
2212         /* clear (again), then enable host interrupts */
2213         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2214         iwl4965_enable_interrupts(priv);
2215
2216         /* really make sure rfkill handshake bits are cleared */
2217         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2218         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2219
2220         /* Copy original ucode data image from disk into backup cache.
2221          * This will be used to initialize the on-board processor's
2222          * data SRAM for a clean start when the runtime program first loads. */
2223         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2224                priv->ucode_data.len);
2225
2226         /* We return success when we resume from suspend and rf_kill is on. */
2227         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2228             test_bit(STATUS_RF_KILL_SW, &priv->status))
2229                 return 0;
2230
2231         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2232
2233                 iwl_clear_stations_table(priv);
2234
2235                 /* load bootstrap state machine,
2236                  * load bootstrap program into processor's memory,
2237                  * prepare to load the "initialize" uCode */
2238                 ret = priv->cfg->ops->lib->load_ucode(priv);
2239
2240                 if (ret) {
2241                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2242                         continue;
2243                 }
2244
2245                 /* Clear out the uCode error bit if it is set */
2246                 clear_bit(STATUS_FW_ERROR, &priv->status);
2247
2248                 /* start card; "initialize" will load runtime ucode */
2249                 iwl4965_nic_start(priv);
2250
2251                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2252
2253                 return 0;
2254         }
2255
2256         set_bit(STATUS_EXIT_PENDING, &priv->status);
2257         __iwl4965_down(priv);
2258         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2259
2260         /* tried to restart and config the device for as long as our
2261          * patience could withstand */
2262         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2263         return -EIO;
2264 }
2265
2266
2267 /*****************************************************************************
2268  *
2269  * Workqueue callbacks
2270  *
2271  *****************************************************************************/
2272
2273 static void iwl_bg_init_alive_start(struct work_struct *data)
2274 {
2275         struct iwl_priv *priv =
2276             container_of(data, struct iwl_priv, init_alive_start.work);
2277
2278         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2279                 return;
2280
2281         mutex_lock(&priv->mutex);
2282         priv->cfg->ops->lib->init_alive_start(priv);
2283         mutex_unlock(&priv->mutex);
2284 }
2285
2286 static void iwl_bg_alive_start(struct work_struct *data)
2287 {
2288         struct iwl_priv *priv =
2289             container_of(data, struct iwl_priv, alive_start.work);
2290
2291         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2292                 return;
2293
2294         mutex_lock(&priv->mutex);
2295         iwl_alive_start(priv);
2296         mutex_unlock(&priv->mutex);
2297 }
2298
2299 static void iwl4965_bg_rf_kill(struct work_struct *work)
2300 {
2301         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2302
2303         wake_up_interruptible(&priv->wait_command_queue);
2304
2305         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2306                 return;
2307
2308         mutex_lock(&priv->mutex);
2309
2310         if (!iwl_is_rfkill(priv)) {
2311                 IWL_DEBUG(IWL_DL_RF_KILL,
2312                           "HW and/or SW RF Kill no longer active, restarting "
2313                           "device\n");
2314                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2315                         queue_work(priv->workqueue, &priv->restart);
2316         } else {
2317                 /* make sure mac80211 stop sending Tx frame */
2318                 if (priv->mac80211_registered)
2319                         ieee80211_stop_queues(priv->hw);
2320
2321                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2322                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2323                                           "disabled by SW switch\n");
2324                 else
2325                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2326                                     "Kill switch must be turned off for "
2327                                     "wireless networking to work.\n");
2328         }
2329         iwl_rfkill_set_hw_state(priv);
2330
2331         mutex_unlock(&priv->mutex);
2332 }
2333
2334 static void iwl4965_bg_set_monitor(struct work_struct *work)
2335 {
2336         struct iwl_priv *priv = container_of(work,
2337                                 struct iwl_priv, set_monitor);
2338         int ret;
2339
2340         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2341
2342         mutex_lock(&priv->mutex);
2343
2344         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2345
2346         if (ret) {
2347                 if (ret == -EAGAIN)
2348                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2349                 else
2350                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2351         }
2352
2353         mutex_unlock(&priv->mutex);
2354 }
2355
2356 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2357 {
2358         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2359                         run_time_calib_work);
2360
2361         mutex_lock(&priv->mutex);
2362
2363         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2364             test_bit(STATUS_SCANNING, &priv->status)) {
2365                 mutex_unlock(&priv->mutex);
2366                 return;
2367         }
2368
2369         if (priv->start_calib) {
2370                 iwl_chain_noise_calibration(priv, &priv->statistics);
2371
2372                 iwl_sensitivity_calibration(priv, &priv->statistics);
2373         }
2374
2375         mutex_unlock(&priv->mutex);
2376         return;
2377 }
2378
2379 static void iwl4965_bg_up(struct work_struct *data)
2380 {
2381         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2382
2383         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2384                 return;
2385
2386         mutex_lock(&priv->mutex);
2387         __iwl4965_up(priv);
2388         mutex_unlock(&priv->mutex);
2389 }
2390
2391 static void iwl4965_bg_restart(struct work_struct *data)
2392 {
2393         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2394
2395         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2396                 return;
2397
2398         iwl4965_down(priv);
2399         queue_work(priv->workqueue, &priv->up);
2400 }
2401
2402 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2403 {
2404         struct iwl_priv *priv =
2405             container_of(data, struct iwl_priv, rx_replenish);
2406
2407         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2408                 return;
2409
2410         mutex_lock(&priv->mutex);
2411         iwl_rx_replenish(priv);
2412         mutex_unlock(&priv->mutex);
2413 }
2414
2415 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2416
2417 static void iwl4965_post_associate(struct iwl_priv *priv)
2418 {
2419         struct ieee80211_conf *conf = NULL;
2420         int ret = 0;
2421         DECLARE_MAC_BUF(mac);
2422
2423         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2424                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2425                 return;
2426         }
2427
2428         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2429                         priv->assoc_id,
2430                         print_mac(mac, priv->active_rxon.bssid_addr));
2431
2432
2433         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2434                 return;
2435
2436
2437         if (!priv->vif || !priv->is_open)
2438                 return;
2439
2440         iwl_scan_cancel_timeout(priv, 200);
2441
2442         conf = ieee80211_get_hw_conf(priv->hw);
2443
2444         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2445         iwl4965_commit_rxon(priv);
2446
2447         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2448         iwl4965_setup_rxon_timing(priv);
2449         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2450                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2451         if (ret)
2452                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2453                             "Attempting to continue.\n");
2454
2455         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2456
2457         if (priv->current_ht_config.is_ht)
2458                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2459
2460         iwl_set_rxon_chain(priv);
2461         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2462
2463         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2464                         priv->assoc_id, priv->beacon_int);
2465
2466         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2467                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2468         else
2469                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2470
2471         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2472                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2473                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2474                 else
2475                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2476
2477                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2478                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2479
2480         }
2481
2482         iwl4965_commit_rxon(priv);
2483
2484         switch (priv->iw_mode) {
2485         case IEEE80211_IF_TYPE_STA:
2486                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2487                 break;
2488
2489         case IEEE80211_IF_TYPE_IBSS:
2490
2491                 /* assume default assoc id */
2492                 priv->assoc_id = 1;
2493
2494                 iwl_rxon_add_station(priv, priv->bssid, 0);
2495                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2496                 iwl4965_send_beacon_cmd(priv);
2497
2498                 break;
2499
2500         default:
2501                 IWL_ERROR("%s Should not be called in %d mode\n",
2502                                 __FUNCTION__, priv->iw_mode);
2503                 break;
2504         }
2505
2506         /* Enable Rx differential gain and sensitivity calibrations */
2507         iwl_chain_noise_reset(priv);
2508         priv->start_calib = 1;
2509
2510         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2511                 priv->assoc_station_added = 1;
2512
2513         iwl4965_activate_qos(priv, 0);
2514
2515         iwl_power_update_mode(priv, 0);
2516         /* we have just associated, don't start scan too early */
2517         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2518 }
2519
2520
2521 static void iwl4965_bg_post_associate(struct work_struct *data)
2522 {
2523         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2524                                              post_associate.work);
2525
2526         mutex_lock(&priv->mutex);
2527         iwl4965_post_associate(priv);
2528         mutex_unlock(&priv->mutex);
2529
2530 }
2531
2532 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2533
2534 static void iwl_bg_scan_completed(struct work_struct *work)
2535 {
2536         struct iwl_priv *priv =
2537             container_of(work, struct iwl_priv, scan_completed);
2538
2539         IWL_DEBUG_SCAN("SCAN complete scan\n");
2540
2541         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2542                 return;
2543
2544         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2545                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2546
2547         ieee80211_scan_completed(priv->hw);
2548
2549         /* Since setting the TXPOWER may have been deferred while
2550          * performing the scan, fire one off */
2551         mutex_lock(&priv->mutex);
2552         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2553         mutex_unlock(&priv->mutex);
2554 }
2555
2556 /*****************************************************************************
2557  *
2558  * mac80211 entry point functions
2559  *
2560  *****************************************************************************/
2561
2562 #define UCODE_READY_TIMEOUT     (2 * HZ)
2563
2564 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2565 {
2566         struct iwl_priv *priv = hw->priv;
2567         int ret;
2568
2569         IWL_DEBUG_MAC80211("enter\n");
2570
2571         if (pci_enable_device(priv->pci_dev)) {
2572                 IWL_ERROR("Fail to pci_enable_device\n");
2573                 return -ENODEV;
2574         }
2575         pci_restore_state(priv->pci_dev);
2576         pci_enable_msi(priv->pci_dev);
2577
2578         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2579                           DRV_NAME, priv);
2580         if (ret) {
2581                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2582                 goto out_disable_msi;
2583         }
2584
2585         /* we should be verifying the device is ready to be opened */
2586         mutex_lock(&priv->mutex);
2587
2588         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2589         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2590          * ucode filename and max sizes are card-specific. */
2591
2592         if (!priv->ucode_code.len) {
2593                 ret = iwl4965_read_ucode(priv);
2594                 if (ret) {
2595                         IWL_ERROR("Could not read microcode: %d\n", ret);
2596                         mutex_unlock(&priv->mutex);
2597                         goto out_release_irq;
2598                 }
2599         }
2600
2601         ret = __iwl4965_up(priv);
2602
2603         mutex_unlock(&priv->mutex);
2604
2605         if (ret)
2606                 goto out_release_irq;
2607
2608         IWL_DEBUG_INFO("Start UP work done.\n");
2609
2610         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2611                 return 0;
2612
2613         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2614          * mac80211 will not be run successfully. */
2615         if (priv->ucode_type == UCODE_RT) {
2616                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2617                                 test_bit(STATUS_READY, &priv->status),
2618                                 UCODE_READY_TIMEOUT);
2619                 if (!ret) {
2620                         if (!test_bit(STATUS_READY, &priv->status)) {
2621                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2622                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2623                                 ret = -ETIMEDOUT;
2624                                 goto out_release_irq;
2625                         }
2626                 }
2627
2628                 priv->is_open = 1;
2629         }
2630         IWL_DEBUG_MAC80211("leave\n");
2631         return 0;
2632
2633 out_release_irq:
2634         free_irq(priv->pci_dev->irq, priv);
2635 out_disable_msi:
2636         pci_disable_msi(priv->pci_dev);
2637         pci_disable_device(priv->pci_dev);
2638         priv->is_open = 0;
2639         IWL_DEBUG_MAC80211("leave - failed\n");
2640         return ret;
2641 }
2642
2643 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2644 {
2645         struct iwl_priv *priv = hw->priv;
2646
2647         IWL_DEBUG_MAC80211("enter\n");
2648
2649         if (!priv->is_open) {
2650                 IWL_DEBUG_MAC80211("leave - skip\n");
2651                 return;
2652         }
2653
2654         priv->is_open = 0;
2655
2656         if (iwl_is_ready_rf(priv)) {
2657                 /* stop mac, cancel any scan request and clear
2658                  * RXON_FILTER_ASSOC_MSK BIT
2659                  */
2660                 mutex_lock(&priv->mutex);
2661                 iwl_scan_cancel_timeout(priv, 100);
2662                 cancel_delayed_work(&priv->post_associate);
2663                 mutex_unlock(&priv->mutex);
2664         }
2665
2666         iwl4965_down(priv);
2667
2668         flush_workqueue(priv->workqueue);
2669         free_irq(priv->pci_dev->irq, priv);
2670         pci_disable_msi(priv->pci_dev);
2671         pci_save_state(priv->pci_dev);
2672         pci_disable_device(priv->pci_dev);
2673
2674         IWL_DEBUG_MAC80211("leave\n");
2675 }
2676
2677 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2678 {
2679         struct iwl_priv *priv = hw->priv;
2680
2681         IWL_DEBUG_MAC80211("enter\n");
2682
2683         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2684                 IWL_DEBUG_MAC80211("leave - monitor\n");
2685                 return -1;
2686         }
2687
2688         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2689                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2690
2691         if (iwl_tx_skb(priv, skb))
2692                 dev_kfree_skb_any(skb);
2693
2694         IWL_DEBUG_MAC80211("leave\n");
2695         return 0;
2696 }
2697
2698 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2699                                  struct ieee80211_if_init_conf *conf)
2700 {
2701         struct iwl_priv *priv = hw->priv;
2702         unsigned long flags;
2703         DECLARE_MAC_BUF(mac);
2704
2705         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2706
2707         if (priv->vif) {
2708                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2709                 return -EOPNOTSUPP;
2710         }
2711
2712         spin_lock_irqsave(&priv->lock, flags);
2713         priv->vif = conf->vif;
2714
2715         spin_unlock_irqrestore(&priv->lock, flags);
2716
2717         mutex_lock(&priv->mutex);
2718
2719         if (conf->mac_addr) {
2720                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2721                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2722         }
2723
2724         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2725                 /* we are not ready, will run again when ready */
2726                 set_bit(STATUS_MODE_PENDING, &priv->status);
2727
2728         mutex_unlock(&priv->mutex);
2729
2730         IWL_DEBUG_MAC80211("leave\n");
2731         return 0;
2732 }
2733
2734 /**
2735  * iwl4965_mac_config - mac80211 config callback
2736  *
2737  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2738  * be set inappropriately and the driver currently sets the hardware up to
2739  * use it whenever needed.
2740  */
2741 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2742 {
2743         struct iwl_priv *priv = hw->priv;
2744         const struct iwl_channel_info *ch_info;
2745         unsigned long flags;
2746         int ret = 0;
2747         u16 channel;
2748
2749         mutex_lock(&priv->mutex);
2750         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2751
2752         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2753
2754         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2755                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2756                 goto out;
2757         }
2758
2759         if (!conf->radio_enabled)
2760                 iwl_radio_kill_sw_disable_radio(priv);
2761
2762         if (!iwl_is_ready(priv)) {
2763                 IWL_DEBUG_MAC80211("leave - not ready\n");
2764                 ret = -EIO;
2765                 goto out;
2766         }
2767
2768         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2769                      test_bit(STATUS_SCANNING, &priv->status))) {
2770                 IWL_DEBUG_MAC80211("leave - scanning\n");
2771                 set_bit(STATUS_CONF_PENDING, &priv->status);
2772                 mutex_unlock(&priv->mutex);
2773                 return 0;
2774         }
2775
2776         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2777         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2778         if (!is_channel_valid(ch_info)) {
2779                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2780                 ret = -EINVAL;
2781                 goto out;
2782         }
2783
2784         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2785             !is_channel_ibss(ch_info)) {
2786                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2787                         conf->channel->hw_value, conf->channel->band);
2788                 ret = -EINVAL;
2789                 goto out;
2790         }
2791
2792         spin_lock_irqsave(&priv->lock, flags);
2793
2794         /* if we are switching from ht to 2.4 clear flags
2795          * from any ht related info since 2.4 does not
2796          * support ht */
2797         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2798 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2799             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2800 #endif
2801         )
2802                 priv->staging_rxon.flags = 0;
2803
2804         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2805
2806         iwl_set_flags_for_band(priv, conf->channel->band);
2807
2808         /* The list of supported rates and rate mask can be different
2809          * for each band; since the band may have changed, reset
2810          * the rate mask to what mac80211 lists */
2811         iwl4965_set_rate(priv);
2812
2813         spin_unlock_irqrestore(&priv->lock, flags);
2814
2815 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2816         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2817                 iwl4965_hw_channel_switch(priv, conf->channel);
2818                 goto out;
2819         }
2820 #endif
2821
2822         if (!conf->radio_enabled) {
2823                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2824                 goto out;
2825         }
2826
2827         if (iwl_is_rfkill(priv)) {
2828                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2829                 ret = -EIO;
2830                 goto out;
2831         }
2832
2833         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2834                            priv->tx_power_user_lmt, conf->power_level);
2835
2836         iwl_set_tx_power(priv, conf->power_level, false);
2837
2838         iwl4965_set_rate(priv);
2839
2840         if (memcmp(&priv->active_rxon,
2841                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2842                 iwl4965_commit_rxon(priv);
2843         else
2844                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2845
2846         IWL_DEBUG_MAC80211("leave\n");
2847
2848 out:
2849         clear_bit(STATUS_CONF_PENDING, &priv->status);
2850         mutex_unlock(&priv->mutex);
2851         return ret;
2852 }
2853
2854 static void iwl4965_config_ap(struct iwl_priv *priv)
2855 {
2856         int ret = 0;
2857
2858         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2859                 return;
2860
2861         /* The following should be done only at AP bring up */
2862         if (!(iwl_is_associated(priv))) {
2863
2864                 /* RXON - unassoc (to set timing command) */
2865                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2866                 iwl4965_commit_rxon(priv);
2867
2868                 /* RXON Timing */
2869                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2870                 iwl4965_setup_rxon_timing(priv);
2871                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2872                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2873                 if (ret)
2874                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2875                                         "Attempting to continue.\n");
2876
2877                 iwl_set_rxon_chain(priv);
2878
2879                 /* FIXME: what should be the assoc_id for AP? */
2880                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2881                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2882                         priv->staging_rxon.flags |=
2883                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2884                 else
2885                         priv->staging_rxon.flags &=
2886                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2887
2888                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2889                         if (priv->assoc_capability &
2890                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2891                                 priv->staging_rxon.flags |=
2892                                         RXON_FLG_SHORT_SLOT_MSK;
2893                         else
2894                                 priv->staging_rxon.flags &=
2895                                         ~RXON_FLG_SHORT_SLOT_MSK;
2896
2897                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2898                                 priv->staging_rxon.flags &=
2899                                         ~RXON_FLG_SHORT_SLOT_MSK;
2900                 }
2901                 /* restore RXON assoc */
2902                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2903                 iwl4965_commit_rxon(priv);
2904                 iwl4965_activate_qos(priv, 1);
2905                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2906         }
2907         iwl4965_send_beacon_cmd(priv);
2908
2909         /* FIXME - we need to add code here to detect a totally new
2910          * configuration, reset the AP, unassoc, rxon timing, assoc,
2911          * clear sta table, add BCAST sta... */
2912 }
2913
2914 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2915                                         struct ieee80211_vif *vif,
2916                                     struct ieee80211_if_conf *conf)
2917 {
2918         struct iwl_priv *priv = hw->priv;
2919         DECLARE_MAC_BUF(mac);
2920         unsigned long flags;
2921         int rc;
2922
2923         if (conf == NULL)
2924                 return -EIO;
2925
2926         if (priv->vif != vif) {
2927                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2928                 return 0;
2929         }
2930
2931         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2932             (!conf->beacon || !conf->ssid_len)) {
2933                 IWL_DEBUG_MAC80211
2934                     ("Leaving in AP mode because HostAPD is not ready.\n");
2935                 return 0;
2936         }
2937
2938         if (!iwl_is_alive(priv))
2939                 return -EAGAIN;
2940
2941         mutex_lock(&priv->mutex);
2942
2943         if (conf->bssid)
2944                 IWL_DEBUG_MAC80211("bssid: %s\n",
2945                                    print_mac(mac, conf->bssid));
2946
2947 /*
2948  * very dubious code was here; the probe filtering flag is never set:
2949  *
2950         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2951             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2952  */
2953
2954         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2955                 if (!conf->bssid) {
2956                         conf->bssid = priv->mac_addr;
2957                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2958                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2959                                            print_mac(mac, conf->bssid));
2960                 }
2961                 if (priv->ibss_beacon)
2962                         dev_kfree_skb(priv->ibss_beacon);
2963
2964                 priv->ibss_beacon = conf->beacon;
2965         }
2966
2967         if (iwl_is_rfkill(priv))
2968                 goto done;
2969
2970         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2971             !is_multicast_ether_addr(conf->bssid)) {
2972                 /* If there is currently a HW scan going on in the background
2973                  * then we need to cancel it else the RXON below will fail. */
2974                 if (iwl_scan_cancel_timeout(priv, 100)) {
2975                         IWL_WARNING("Aborted scan still in progress "
2976                                     "after 100ms\n");
2977                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2978                         mutex_unlock(&priv->mutex);
2979                         return -EAGAIN;
2980                 }
2981                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2982
2983                 /* TODO: Audit driver for usage of these members and see
2984                  * if mac80211 deprecates them (priv->bssid looks like it
2985                  * shouldn't be there, but I haven't scanned the IBSS code
2986                  * to verify) - jpk */
2987                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
2988
2989                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
2990                         iwl4965_config_ap(priv);
2991                 else {
2992                         rc = iwl4965_commit_rxon(priv);
2993                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
2994                                 iwl_rxon_add_station(
2995                                         priv, priv->active_rxon.bssid_addr, 1);
2996                 }
2997
2998         } else {
2999                 iwl_scan_cancel_timeout(priv, 100);
3000                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3001                 iwl4965_commit_rxon(priv);
3002         }
3003
3004  done:
3005         spin_lock_irqsave(&priv->lock, flags);
3006         if (!conf->ssid_len)
3007                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3008         else
3009                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3010
3011         priv->essid_len = conf->ssid_len;
3012         spin_unlock_irqrestore(&priv->lock, flags);
3013
3014         IWL_DEBUG_MAC80211("leave\n");
3015         mutex_unlock(&priv->mutex);
3016
3017         return 0;
3018 }
3019
3020 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3021                                  unsigned int changed_flags,
3022                                  unsigned int *total_flags,
3023                                  int mc_count, struct dev_addr_list *mc_list)
3024 {
3025         /*
3026          * XXX: dummy
3027          * see also iwl4965_connection_init_rx_config
3028          */
3029         struct iwl_priv *priv = hw->priv;
3030         int new_flags = 0;
3031         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3032                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3033                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3034                                            IEEE80211_IF_TYPE_MNTR,
3035                                            changed_flags, *total_flags);
3036                         /* queue work 'cuz mac80211 is holding a lock which
3037                          * prevents us from issuing (synchronous) f/w cmds */
3038                         queue_work(priv->workqueue, &priv->set_monitor);
3039                         new_flags &= FIF_PROMISC_IN_BSS |
3040                                      FIF_OTHER_BSS |
3041                                      FIF_ALLMULTI;
3042                 }
3043         }
3044         *total_flags = new_flags;
3045 }
3046
3047 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3048                                      struct ieee80211_if_init_conf *conf)
3049 {
3050         struct iwl_priv *priv = hw->priv;
3051
3052         IWL_DEBUG_MAC80211("enter\n");
3053
3054         mutex_lock(&priv->mutex);
3055
3056         if (iwl_is_ready_rf(priv)) {
3057                 iwl_scan_cancel_timeout(priv, 100);
3058                 cancel_delayed_work(&priv->post_associate);
3059                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3060                 iwl4965_commit_rxon(priv);
3061         }
3062         if (priv->vif == conf->vif) {
3063                 priv->vif = NULL;
3064                 memset(priv->bssid, 0, ETH_ALEN);
3065                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3066                 priv->essid_len = 0;
3067         }
3068         mutex_unlock(&priv->mutex);
3069
3070         IWL_DEBUG_MAC80211("leave\n");
3071
3072 }
3073
3074 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3075 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3076                                      struct ieee80211_vif *vif,
3077                                      struct ieee80211_bss_conf *bss_conf,
3078                                      u32 changes)
3079 {
3080         struct iwl_priv *priv = hw->priv;
3081
3082         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3083
3084         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3085                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3086                                    bss_conf->use_short_preamble);
3087                 if (bss_conf->use_short_preamble)
3088                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3089                 else
3090                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3091         }
3092
3093         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3094                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3095                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3096                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3097                 else
3098                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3099         }
3100
3101         if (changes & BSS_CHANGED_HT) {
3102                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3103                 iwl4965_ht_conf(priv, bss_conf);
3104                 iwl_set_rxon_chain(priv);
3105         }
3106
3107         if (changes & BSS_CHANGED_ASSOC) {
3108                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3109                 /* This should never happen as this function should
3110                  * never be called from interrupt context. */
3111                 if (WARN_ON_ONCE(in_interrupt()))
3112                         return;
3113                 if (bss_conf->assoc) {
3114                         priv->assoc_id = bss_conf->aid;
3115                         priv->beacon_int = bss_conf->beacon_int;
3116                         priv->timestamp = bss_conf->timestamp;
3117                         priv->assoc_capability = bss_conf->assoc_capability;
3118                         priv->next_scan_jiffies = jiffies +
3119                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3120                         mutex_lock(&priv->mutex);
3121                         iwl4965_post_associate(priv);
3122                         mutex_unlock(&priv->mutex);
3123                 } else {
3124                         priv->assoc_id = 0;
3125                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3126                 }
3127         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3128                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3129                         iwl_send_rxon_assoc(priv);
3130         }
3131
3132 }
3133
3134 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3135 {
3136         int rc = 0;
3137         unsigned long flags;
3138         struct iwl_priv *priv = hw->priv;
3139
3140         IWL_DEBUG_MAC80211("enter\n");
3141
3142         mutex_lock(&priv->mutex);
3143         spin_lock_irqsave(&priv->lock, flags);
3144
3145         if (!iwl_is_ready_rf(priv)) {
3146                 rc = -EIO;
3147                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3148                 goto out_unlock;
3149         }
3150
3151         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3152                 rc = -EIO;
3153                 IWL_ERROR("ERROR: APs don't scan\n");
3154                 goto out_unlock;
3155         }
3156
3157         /* we don't schedule scan within next_scan_jiffies period */
3158         if (priv->next_scan_jiffies &&
3159                         time_after(priv->next_scan_jiffies, jiffies)) {
3160                 rc = -EAGAIN;
3161                 goto out_unlock;
3162         }
3163         /* if we just finished scan ask for delay */
3164         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3165                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3166                 rc = -EAGAIN;
3167                 goto out_unlock;
3168         }
3169         if (len) {
3170                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3171                                iwl_escape_essid(ssid, len), (int)len);
3172
3173                 priv->one_direct_scan = 1;
3174                 priv->direct_ssid_len = (u8)
3175                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3176                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3177         } else
3178                 priv->one_direct_scan = 0;
3179
3180         rc = iwl_scan_initiate(priv);
3181
3182         IWL_DEBUG_MAC80211("leave\n");
3183
3184 out_unlock:
3185         spin_unlock_irqrestore(&priv->lock, flags);
3186         mutex_unlock(&priv->mutex);
3187
3188         return rc;
3189 }
3190
3191 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3192                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3193                         u32 iv32, u16 *phase1key)
3194 {
3195         struct iwl_priv *priv = hw->priv;
3196         u8 sta_id = IWL_INVALID_STATION;
3197         unsigned long flags;
3198         __le16 key_flags = 0;
3199         int i;
3200         DECLARE_MAC_BUF(mac);
3201
3202         IWL_DEBUG_MAC80211("enter\n");
3203
3204         sta_id = iwl_find_station(priv, addr);
3205         if (sta_id == IWL_INVALID_STATION) {
3206                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3207                                    print_mac(mac, addr));
3208                 return;
3209         }
3210
3211         iwl_scan_cancel_timeout(priv, 100);
3212
3213         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3214         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3215         key_flags &= ~STA_KEY_FLG_INVALID;
3216
3217         if (sta_id == priv->hw_params.bcast_sta_id)
3218                 key_flags |= STA_KEY_MULTICAST_MSK;
3219
3220         spin_lock_irqsave(&priv->sta_lock, flags);
3221
3222         priv->stations[sta_id].sta.key.key_flags = key_flags;
3223         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3224
3225         for (i = 0; i < 5; i++)
3226                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3227                         cpu_to_le16(phase1key[i]);
3228
3229         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3230         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3231
3232         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3233
3234         spin_unlock_irqrestore(&priv->sta_lock, flags);
3235
3236         IWL_DEBUG_MAC80211("leave\n");
3237 }
3238
3239 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3240                            const u8 *local_addr, const u8 *addr,
3241                            struct ieee80211_key_conf *key)
3242 {
3243         struct iwl_priv *priv = hw->priv;
3244         DECLARE_MAC_BUF(mac);
3245         int ret = 0;
3246         u8 sta_id = IWL_INVALID_STATION;
3247         u8 is_default_wep_key = 0;
3248
3249         IWL_DEBUG_MAC80211("enter\n");
3250
3251         if (priv->hw_params.sw_crypto) {
3252                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3253                 return -EOPNOTSUPP;
3254         }
3255
3256         if (is_zero_ether_addr(addr))
3257                 /* only support pairwise keys */
3258                 return -EOPNOTSUPP;
3259
3260         sta_id = iwl_find_station(priv, addr);
3261         if (sta_id == IWL_INVALID_STATION) {
3262                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3263                                    print_mac(mac, addr));
3264                 return -EINVAL;
3265
3266         }
3267
3268         mutex_lock(&priv->mutex);
3269         iwl_scan_cancel_timeout(priv, 100);
3270         mutex_unlock(&priv->mutex);
3271
3272         /* If we are getting WEP group key and we didn't receive any key mapping
3273          * so far, we are in legacy wep mode (group key only), otherwise we are
3274          * in 1X mode.
3275          * In legacy wep mode, we use another host command to the uCode */
3276         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3277                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3278                 if (cmd == SET_KEY)
3279                         is_default_wep_key = !priv->key_mapping_key;
3280                 else
3281                         is_default_wep_key =
3282                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3283         }
3284
3285         switch (cmd) {
3286         case SET_KEY:
3287                 if (is_default_wep_key)
3288                         ret = iwl_set_default_wep_key(priv, key);
3289                 else
3290                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3291
3292                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3293                 break;
3294         case DISABLE_KEY:
3295                 if (is_default_wep_key)
3296                         ret = iwl_remove_default_wep_key(priv, key);
3297                 else
3298                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3299
3300                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3301                 break;
3302         default:
3303                 ret = -EINVAL;
3304         }
3305
3306         IWL_DEBUG_MAC80211("leave\n");
3307
3308         return ret;
3309 }
3310
3311 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3312                            const struct ieee80211_tx_queue_params *params)
3313 {
3314         struct iwl_priv *priv = hw->priv;
3315         unsigned long flags;
3316         int q;
3317
3318         IWL_DEBUG_MAC80211("enter\n");
3319
3320         if (!iwl_is_ready_rf(priv)) {
3321                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3322                 return -EIO;
3323         }
3324
3325         if (queue >= AC_NUM) {
3326                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3327                 return 0;
3328         }
3329
3330         if (!priv->qos_data.qos_enable) {
3331                 priv->qos_data.qos_active = 0;
3332                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3333                 return 0;
3334         }
3335         q = AC_NUM - 1 - queue;
3336
3337         spin_lock_irqsave(&priv->lock, flags);
3338
3339         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3340         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3341         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3342         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3343                         cpu_to_le16((params->txop * 32));
3344
3345         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3346         priv->qos_data.qos_active = 1;
3347
3348         spin_unlock_irqrestore(&priv->lock, flags);
3349
3350         mutex_lock(&priv->mutex);
3351         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3352                 iwl4965_activate_qos(priv, 1);
3353         else if (priv->assoc_id && iwl_is_associated(priv))
3354                 iwl4965_activate_qos(priv, 0);
3355
3356         mutex_unlock(&priv->mutex);
3357
3358         IWL_DEBUG_MAC80211("leave\n");
3359         return 0;
3360 }
3361
3362 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3363                                 struct ieee80211_tx_queue_stats *stats)
3364 {
3365         struct iwl_priv *priv = hw->priv;
3366         int i, avail;
3367         struct iwl_tx_queue *txq;
3368         struct iwl_queue *q;
3369         unsigned long flags;
3370
3371         IWL_DEBUG_MAC80211("enter\n");
3372
3373         if (!iwl_is_ready_rf(priv)) {
3374                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3375                 return -EIO;
3376         }
3377
3378         spin_lock_irqsave(&priv->lock, flags);
3379
3380         for (i = 0; i < AC_NUM; i++) {
3381                 txq = &priv->txq[i];
3382                 q = &txq->q;
3383                 avail = iwl_queue_space(q);
3384
3385                 stats[i].len = q->n_window - avail;
3386                 stats[i].limit = q->n_window - q->high_mark;
3387                 stats[i].count = q->n_window;
3388
3389         }
3390         spin_unlock_irqrestore(&priv->lock, flags);
3391
3392         IWL_DEBUG_MAC80211("leave\n");
3393
3394         return 0;
3395 }
3396
3397 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3398                              struct ieee80211_low_level_stats *stats)
3399 {
3400         struct iwl_priv *priv = hw->priv;
3401
3402         priv = hw->priv;
3403         IWL_DEBUG_MAC80211("enter\n");
3404         IWL_DEBUG_MAC80211("leave\n");
3405
3406         return 0;
3407 }
3408
3409 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3410 {
3411         struct iwl_priv *priv;
3412
3413         priv = hw->priv;
3414         IWL_DEBUG_MAC80211("enter\n");
3415         IWL_DEBUG_MAC80211("leave\n");
3416
3417         return 0;
3418 }
3419
3420 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3421 {
3422         struct iwl_priv *priv = hw->priv;
3423         unsigned long flags;
3424
3425         mutex_lock(&priv->mutex);
3426         IWL_DEBUG_MAC80211("enter\n");
3427
3428         priv->lq_mngr.lq_ready = 0;
3429         spin_lock_irqsave(&priv->lock, flags);
3430         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3431         spin_unlock_irqrestore(&priv->lock, flags);
3432
3433         iwl_reset_qos(priv);
3434
3435         cancel_delayed_work(&priv->post_associate);
3436
3437         spin_lock_irqsave(&priv->lock, flags);
3438         priv->assoc_id = 0;
3439         priv->assoc_capability = 0;
3440         priv->assoc_station_added = 0;
3441
3442         /* new association get rid of ibss beacon skb */
3443         if (priv->ibss_beacon)
3444                 dev_kfree_skb(priv->ibss_beacon);
3445
3446         priv->ibss_beacon = NULL;
3447
3448         priv->beacon_int = priv->hw->conf.beacon_int;
3449         priv->timestamp = 0;
3450         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3451                 priv->beacon_int = 0;
3452
3453         spin_unlock_irqrestore(&priv->lock, flags);
3454
3455         if (!iwl_is_ready_rf(priv)) {
3456                 IWL_DEBUG_MAC80211("leave - not ready\n");
3457                 mutex_unlock(&priv->mutex);
3458                 return;
3459         }
3460
3461         /* we are restarting association process
3462          * clear RXON_FILTER_ASSOC_MSK bit
3463          */
3464         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3465                 iwl_scan_cancel_timeout(priv, 100);
3466                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3467                 iwl4965_commit_rxon(priv);
3468         }
3469
3470         iwl_power_update_mode(priv, 0);
3471
3472         /* Per mac80211.h: This is only used in IBSS mode... */
3473         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3474
3475                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3476                 mutex_unlock(&priv->mutex);
3477                 return;
3478         }
3479
3480         iwl4965_set_rate(priv);
3481
3482         mutex_unlock(&priv->mutex);
3483
3484         IWL_DEBUG_MAC80211("leave\n");
3485 }
3486
3487 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3488 {
3489         struct iwl_priv *priv = hw->priv;
3490         unsigned long flags;
3491
3492         mutex_lock(&priv->mutex);
3493         IWL_DEBUG_MAC80211("enter\n");
3494
3495         if (!iwl_is_ready_rf(priv)) {
3496                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3497                 mutex_unlock(&priv->mutex);
3498                 return -EIO;
3499         }
3500
3501         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3502                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3503                 mutex_unlock(&priv->mutex);
3504                 return -EIO;
3505         }
3506
3507         spin_lock_irqsave(&priv->lock, flags);
3508
3509         if (priv->ibss_beacon)
3510                 dev_kfree_skb(priv->ibss_beacon);
3511
3512         priv->ibss_beacon = skb;
3513
3514         priv->assoc_id = 0;
3515
3516         IWL_DEBUG_MAC80211("leave\n");
3517         spin_unlock_irqrestore(&priv->lock, flags);
3518
3519         iwl_reset_qos(priv);
3520
3521         iwl4965_post_associate(priv);
3522
3523         mutex_unlock(&priv->mutex);
3524
3525         return 0;
3526 }
3527
3528 /*****************************************************************************
3529  *
3530  * sysfs attributes
3531  *
3532  *****************************************************************************/
3533
3534 #ifdef CONFIG_IWLWIFI_DEBUG
3535
3536 /*
3537  * The following adds a new attribute to the sysfs representation
3538  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3539  * used for controlling the debug level.
3540  *
3541  * See the level definitions in iwl for details.
3542  */
3543
3544 static ssize_t show_debug_level(struct device *d,
3545                                 struct device_attribute *attr, char *buf)
3546 {
3547         struct iwl_priv *priv = d->driver_data;
3548
3549         return sprintf(buf, "0x%08X\n", priv->debug_level);
3550 }
3551 static ssize_t store_debug_level(struct device *d,
3552                                 struct device_attribute *attr,
3553                                  const char *buf, size_t count)
3554 {
3555         struct iwl_priv *priv = d->driver_data;
3556         char *p = (char *)buf;
3557         u32 val;
3558
3559         val = simple_strtoul(p, &p, 0);
3560         if (p == buf)
3561                 printk(KERN_INFO DRV_NAME
3562                        ": %s is not in hex or decimal form.\n", buf);
3563         else
3564                 priv->debug_level = val;
3565
3566         return strnlen(buf, count);
3567 }
3568
3569 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3570                         show_debug_level, store_debug_level);
3571
3572
3573 #endif /* CONFIG_IWLWIFI_DEBUG */
3574
3575
3576 static ssize_t show_version(struct device *d,
3577                                 struct device_attribute *attr, char *buf)
3578 {
3579         struct iwl_priv *priv = d->driver_data;
3580         struct iwl_alive_resp *palive = &priv->card_alive;
3581         ssize_t pos = 0;
3582         u16 eeprom_ver;
3583
3584         if (palive->is_valid)
3585                 pos += sprintf(buf + pos,
3586                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3587                                 "fw type: 0x%01X 0x%01X\n",
3588                                 palive->ucode_major, palive->ucode_minor,
3589                                 palive->sw_rev[0], palive->sw_rev[1],
3590                                 palive->ver_type, palive->ver_subtype);
3591         else
3592                 pos += sprintf(buf + pos, "fw not loaded\n");
3593
3594         if (priv->eeprom) {
3595                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3596                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3597                                  eeprom_ver);
3598         } else {
3599                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3600         }
3601
3602         return pos;
3603 }
3604
3605 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3606
3607 static ssize_t show_temperature(struct device *d,
3608                                 struct device_attribute *attr, char *buf)
3609 {
3610         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3611
3612         if (!iwl_is_alive(priv))
3613                 return -EAGAIN;
3614
3615         return sprintf(buf, "%d\n", priv->temperature);
3616 }
3617
3618 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3619
3620 static ssize_t show_rs_window(struct device *d,
3621                               struct device_attribute *attr,
3622                               char *buf)
3623 {
3624         struct iwl_priv *priv = d->driver_data;
3625         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3626 }
3627 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3628
3629 static ssize_t show_tx_power(struct device *d,
3630                              struct device_attribute *attr, char *buf)
3631 {
3632         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3633         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3634 }
3635
3636 static ssize_t store_tx_power(struct device *d,
3637                               struct device_attribute *attr,
3638                               const char *buf, size_t count)
3639 {
3640         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3641         char *p = (char *)buf;
3642         u32 val;
3643
3644         val = simple_strtoul(p, &p, 10);
3645         if (p == buf)
3646                 printk(KERN_INFO DRV_NAME
3647                        ": %s is not in decimal form.\n", buf);
3648         else
3649                 iwl_set_tx_power(priv, val, false);
3650
3651         return count;
3652 }
3653
3654 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3655
3656 static ssize_t show_flags(struct device *d,
3657                           struct device_attribute *attr, char *buf)
3658 {
3659         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3660
3661         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3662 }
3663
3664 static ssize_t store_flags(struct device *d,
3665                            struct device_attribute *attr,
3666                            const char *buf, size_t count)
3667 {
3668         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3669         u32 flags = simple_strtoul(buf, NULL, 0);
3670
3671         mutex_lock(&priv->mutex);
3672         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3673                 /* Cancel any currently running scans... */
3674                 if (iwl_scan_cancel_timeout(priv, 100))
3675                         IWL_WARNING("Could not cancel scan.\n");
3676                 else {
3677                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3678                                        flags);
3679                         priv->staging_rxon.flags = cpu_to_le32(flags);
3680                         iwl4965_commit_rxon(priv);
3681                 }
3682         }
3683         mutex_unlock(&priv->mutex);
3684
3685         return count;
3686 }
3687
3688 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3689
3690 static ssize_t show_filter_flags(struct device *d,
3691                                  struct device_attribute *attr, char *buf)
3692 {
3693         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3694
3695         return sprintf(buf, "0x%04X\n",
3696                 le32_to_cpu(priv->active_rxon.filter_flags));
3697 }
3698
3699 static ssize_t store_filter_flags(struct device *d,
3700                                   struct device_attribute *attr,
3701                                   const char *buf, size_t count)
3702 {
3703         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3704         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3705
3706         mutex_lock(&priv->mutex);
3707         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3708                 /* Cancel any currently running scans... */
3709                 if (iwl_scan_cancel_timeout(priv, 100))
3710                         IWL_WARNING("Could not cancel scan.\n");
3711                 else {
3712                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3713                                        "0x%04X\n", filter_flags);
3714                         priv->staging_rxon.filter_flags =
3715                                 cpu_to_le32(filter_flags);
3716                         iwl4965_commit_rxon(priv);
3717                 }
3718         }
3719         mutex_unlock(&priv->mutex);
3720
3721         return count;
3722 }
3723
3724 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3725                    store_filter_flags);
3726
3727 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3728
3729 static ssize_t show_measurement(struct device *d,
3730                                 struct device_attribute *attr, char *buf)
3731 {
3732         struct iwl_priv *priv = dev_get_drvdata(d);
3733         struct iwl4965_spectrum_notification measure_report;
3734         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3735         u8 *data = (u8 *) & measure_report;
3736         unsigned long flags;
3737
3738         spin_lock_irqsave(&priv->lock, flags);
3739         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3740                 spin_unlock_irqrestore(&priv->lock, flags);
3741                 return 0;
3742         }
3743         memcpy(&measure_report, &priv->measure_report, size);
3744         priv->measurement_status = 0;
3745         spin_unlock_irqrestore(&priv->lock, flags);
3746
3747         while (size && (PAGE_SIZE - len)) {
3748                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3749                                    PAGE_SIZE - len, 1);
3750                 len = strlen(buf);
3751                 if (PAGE_SIZE - len)
3752                         buf[len++] = '\n';
3753
3754                 ofs += 16;
3755                 size -= min(size, 16U);
3756         }
3757
3758         return len;
3759 }
3760
3761 static ssize_t store_measurement(struct device *d,
3762                                  struct device_attribute *attr,
3763                                  const char *buf, size_t count)
3764 {
3765         struct iwl_priv *priv = dev_get_drvdata(d);
3766         struct ieee80211_measurement_params params = {
3767                 .channel = le16_to_cpu(priv->active_rxon.channel),
3768                 .start_time = cpu_to_le64(priv->last_tsf),
3769                 .duration = cpu_to_le16(1),
3770         };
3771         u8 type = IWL_MEASURE_BASIC;
3772         u8 buffer[32];
3773         u8 channel;
3774
3775         if (count) {
3776                 char *p = buffer;
3777                 strncpy(buffer, buf, min(sizeof(buffer), count));
3778                 channel = simple_strtoul(p, NULL, 0);
3779                 if (channel)
3780                         params.channel = channel;
3781
3782                 p = buffer;
3783                 while (*p && *p != ' ')
3784                         p++;
3785                 if (*p)
3786                         type = simple_strtoul(p + 1, NULL, 0);
3787         }
3788
3789         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3790                        "channel %d (for '%s')\n", type, params.channel, buf);
3791         iwl4965_get_measurement(priv, &params, type);
3792
3793         return count;
3794 }
3795
3796 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3797                    show_measurement, store_measurement);
3798 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3799
3800 static ssize_t store_retry_rate(struct device *d,
3801                                 struct device_attribute *attr,
3802                                 const char *buf, size_t count)
3803 {
3804         struct iwl_priv *priv = dev_get_drvdata(d);
3805
3806         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3807         if (priv->retry_rate <= 0)
3808                 priv->retry_rate = 1;
3809
3810         return count;
3811 }
3812
3813 static ssize_t show_retry_rate(struct device *d,
3814                                struct device_attribute *attr, char *buf)
3815 {
3816         struct iwl_priv *priv = dev_get_drvdata(d);
3817         return sprintf(buf, "%d", priv->retry_rate);
3818 }
3819
3820 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3821                    store_retry_rate);
3822
3823 static ssize_t store_power_level(struct device *d,
3824                                  struct device_attribute *attr,
3825                                  const char *buf, size_t count)
3826 {
3827         struct iwl_priv *priv = dev_get_drvdata(d);
3828         int rc;
3829         int mode;
3830
3831         mode = simple_strtoul(buf, NULL, 0);
3832         mutex_lock(&priv->mutex);
3833
3834         if (!iwl_is_ready(priv)) {
3835                 rc = -EAGAIN;
3836                 goto out;
3837         }
3838
3839         rc = iwl_power_set_user_mode(priv, mode);
3840         if (rc) {
3841                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3842                 goto out;
3843         }
3844         rc = count;
3845
3846  out:
3847         mutex_unlock(&priv->mutex);
3848         return rc;
3849 }
3850
3851 #define MAX_WX_STRING 80
3852
3853 /* Values are in microsecond */
3854 static const s32 timeout_duration[] = {
3855         350000,
3856         250000,
3857         75000,
3858         37000,
3859         25000,
3860 };
3861 static const s32 period_duration[] = {
3862         400000,
3863         700000,
3864         1000000,
3865         1000000,
3866         1000000
3867 };
3868
3869 static ssize_t show_power_level(struct device *d,
3870                                 struct device_attribute *attr, char *buf)
3871 {
3872         struct iwl_priv *priv = dev_get_drvdata(d);
3873         int level = priv->power_data.power_mode;
3874         char *p = buf;
3875
3876         p += sprintf(p, "%d ", level);
3877         switch (level) {
3878         case IWL_POWER_MODE_CAM:
3879         case IWL_POWER_AC:
3880                 p += sprintf(p, "(AC)");
3881                 break;
3882         case IWL_POWER_BATTERY:
3883                 p += sprintf(p, "(BATTERY)");
3884                 break;
3885         default:
3886                 p += sprintf(p,
3887                              "(Timeout %dms, Period %dms)",
3888                              timeout_duration[level - 1] / 1000,
3889                              period_duration[level - 1] / 1000);
3890         }
3891 /*
3892         if (!(priv->power_mode & IWL_POWER_ENABLED))
3893                 p += sprintf(p, " OFF\n");
3894         else
3895                 p += sprintf(p, " \n");
3896 */
3897         p += sprintf(p, " \n");
3898         return (p - buf + 1);
3899 }
3900
3901 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3902                    store_power_level);
3903
3904 static ssize_t show_channels(struct device *d,
3905                              struct device_attribute *attr, char *buf)
3906 {
3907
3908         struct iwl_priv *priv = dev_get_drvdata(d);
3909         struct ieee80211_channel *channels = NULL;
3910         const struct ieee80211_supported_band *supp_band = NULL;
3911         int len = 0, i;
3912         int count = 0;
3913
3914         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3915                 return -EAGAIN;
3916
3917         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3918         channels = supp_band->channels;
3919         count = supp_band->n_channels;
3920
3921         len += sprintf(&buf[len],
3922                         "Displaying %d channels in 2.4GHz band "
3923                         "(802.11bg):\n", count);
3924
3925         for (i = 0; i < count; i++)
3926                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3927                                 ieee80211_frequency_to_channel(
3928                                 channels[i].center_freq),
3929                                 channels[i].max_power,
3930                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3931                                 " (IEEE 802.11h required)" : "",
3932                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3933                                 || (channels[i].flags &
3934                                 IEEE80211_CHAN_RADAR)) ? "" :
3935                                 ", IBSS",
3936                                 channels[i].flags &
3937                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3938                                 "passive only" : "active/passive");
3939
3940         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3941         channels = supp_band->channels;
3942         count = supp_band->n_channels;
3943
3944         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3945                         "(802.11a):\n", count);
3946
3947         for (i = 0; i < count; i++)
3948                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3949                                 ieee80211_frequency_to_channel(
3950                                 channels[i].center_freq),
3951                                 channels[i].max_power,
3952                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3953                                 " (IEEE 802.11h required)" : "",
3954                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3955                                 || (channels[i].flags &
3956                                 IEEE80211_CHAN_RADAR)) ? "" :
3957                                 ", IBSS",
3958                                 channels[i].flags &
3959                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3960                                 "passive only" : "active/passive");
3961
3962         return len;
3963 }
3964
3965 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3966
3967 static ssize_t show_statistics(struct device *d,
3968                                struct device_attribute *attr, char *buf)
3969 {
3970         struct iwl_priv *priv = dev_get_drvdata(d);
3971         u32 size = sizeof(struct iwl_notif_statistics);
3972         u32 len = 0, ofs = 0;
3973         u8 *data = (u8 *) & priv->statistics;
3974         int rc = 0;
3975
3976         if (!iwl_is_alive(priv))
3977                 return -EAGAIN;
3978
3979         mutex_lock(&priv->mutex);
3980         rc = iwl_send_statistics_request(priv, 0);
3981         mutex_unlock(&priv->mutex);
3982
3983         if (rc) {
3984                 len = sprintf(buf,
3985                               "Error sending statistics request: 0x%08X\n", rc);
3986                 return len;
3987         }
3988
3989         while (size && (PAGE_SIZE - len)) {
3990                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3991                                    PAGE_SIZE - len, 1);
3992                 len = strlen(buf);
3993                 if (PAGE_SIZE - len)
3994                         buf[len++] = '\n';
3995
3996                 ofs += 16;
3997                 size -= min(size, 16U);
3998         }
3999
4000         return len;
4001 }
4002
4003 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4004
4005 static ssize_t show_status(struct device *d,
4006                            struct device_attribute *attr, char *buf)
4007 {
4008         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4009         if (!iwl_is_alive(priv))
4010                 return -EAGAIN;
4011         return sprintf(buf, "0x%08x\n", (int)priv->status);
4012 }
4013
4014 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4015
4016 /*****************************************************************************
4017  *
4018  * driver setup and teardown
4019  *
4020  *****************************************************************************/
4021
4022 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4023 {
4024         priv->workqueue = create_workqueue(DRV_NAME);
4025
4026         init_waitqueue_head(&priv->wait_command_queue);
4027
4028         INIT_WORK(&priv->up, iwl4965_bg_up);
4029         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4030         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4031         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4032         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4033         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4034         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4035         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4036         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4037         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4038
4039         /* FIXME : remove when resolved PENDING */
4040         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4041         iwl_setup_scan_deferred_work(priv);
4042
4043         if (priv->cfg->ops->lib->setup_deferred_work)
4044                 priv->cfg->ops->lib->setup_deferred_work(priv);
4045
4046         init_timer(&priv->statistics_periodic);
4047         priv->statistics_periodic.data = (unsigned long)priv;
4048         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4049
4050         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4051                      iwl4965_irq_tasklet, (unsigned long)priv);
4052 }
4053
4054 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4055 {
4056         if (priv->cfg->ops->lib->cancel_deferred_work)
4057                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4058
4059         cancel_delayed_work_sync(&priv->init_alive_start);
4060         cancel_delayed_work(&priv->scan_check);
4061         cancel_delayed_work(&priv->alive_start);
4062         cancel_delayed_work(&priv->post_associate);
4063         cancel_work_sync(&priv->beacon_update);
4064         del_timer_sync(&priv->statistics_periodic);
4065 }
4066
4067 static struct attribute *iwl4965_sysfs_entries[] = {
4068         &dev_attr_channels.attr,
4069         &dev_attr_flags.attr,
4070         &dev_attr_filter_flags.attr,
4071 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4072         &dev_attr_measurement.attr,
4073 #endif
4074         &dev_attr_power_level.attr,
4075         &dev_attr_retry_rate.attr,
4076         &dev_attr_rs_window.attr,
4077         &dev_attr_statistics.attr,
4078         &dev_attr_status.attr,
4079         &dev_attr_temperature.attr,
4080         &dev_attr_tx_power.attr,
4081 #ifdef CONFIG_IWLWIFI_DEBUG
4082         &dev_attr_debug_level.attr,
4083 #endif
4084         &dev_attr_version.attr,
4085
4086         NULL
4087 };
4088
4089 static struct attribute_group iwl4965_attribute_group = {
4090         .name = NULL,           /* put in device directory */
4091         .attrs = iwl4965_sysfs_entries,
4092 };
4093
4094 static struct ieee80211_ops iwl4965_hw_ops = {
4095         .tx = iwl4965_mac_tx,
4096         .start = iwl4965_mac_start,
4097         .stop = iwl4965_mac_stop,
4098         .add_interface = iwl4965_mac_add_interface,
4099         .remove_interface = iwl4965_mac_remove_interface,
4100         .config = iwl4965_mac_config,
4101         .config_interface = iwl4965_mac_config_interface,
4102         .configure_filter = iwl4965_configure_filter,
4103         .set_key = iwl4965_mac_set_key,
4104         .update_tkip_key = iwl4965_mac_update_tkip_key,
4105         .get_stats = iwl4965_mac_get_stats,
4106         .get_tx_stats = iwl4965_mac_get_tx_stats,
4107         .conf_tx = iwl4965_mac_conf_tx,
4108         .get_tsf = iwl4965_mac_get_tsf,
4109         .reset_tsf = iwl4965_mac_reset_tsf,
4110         .beacon_update = iwl4965_mac_beacon_update,
4111         .bss_info_changed = iwl4965_bss_info_changed,
4112         .ampdu_action = iwl4965_mac_ampdu_action,
4113         .hw_scan = iwl4965_mac_hw_scan
4114 };
4115
4116 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4117 {
4118         int err = 0;
4119         struct iwl_priv *priv;
4120         struct ieee80211_hw *hw;
4121         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4122         unsigned long flags;
4123         DECLARE_MAC_BUF(mac);
4124
4125         /************************
4126          * 1. Allocating HW data
4127          ************************/
4128
4129         /* Disabling hardware scan means that mac80211 will perform scans
4130          * "the hard way", rather than using device's scan. */
4131         if (cfg->mod_params->disable_hw_scan) {
4132                 if (cfg->mod_params->debug & IWL_DL_INFO)
4133                         dev_printk(KERN_DEBUG, &(pdev->dev),
4134                                    "Disabling hw_scan\n");
4135                 iwl4965_hw_ops.hw_scan = NULL;
4136         }
4137
4138         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4139         if (!hw) {
4140                 err = -ENOMEM;
4141                 goto out;
4142         }
4143         priv = hw->priv;
4144         /* At this point both hw and priv are allocated. */
4145
4146         SET_IEEE80211_DEV(hw, &pdev->dev);
4147
4148         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4149         priv->cfg = cfg;
4150         priv->pci_dev = pdev;
4151
4152 #ifdef CONFIG_IWLWIFI_DEBUG
4153         priv->debug_level = priv->cfg->mod_params->debug;
4154         atomic_set(&priv->restrict_refcnt, 0);
4155 #endif
4156
4157         /**************************
4158          * 2. Initializing PCI bus
4159          **************************/
4160         if (pci_enable_device(pdev)) {
4161                 err = -ENODEV;
4162                 goto out_ieee80211_free_hw;
4163         }
4164
4165         pci_set_master(pdev);
4166
4167         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4168         if (!err)
4169                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4170         if (err) {
4171                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4172                 if (!err)
4173                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4174                 /* both attempts failed: */
4175                 if (err) {
4176                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4177                                 DRV_NAME);
4178                         goto out_pci_disable_device;
4179                 }
4180         }
4181
4182         err = pci_request_regions(pdev, DRV_NAME);
4183         if (err)
4184                 goto out_pci_disable_device;
4185
4186         pci_set_drvdata(pdev, priv);
4187
4188         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4189          * PCI Tx retries from interfering with C3 CPU state */
4190         pci_write_config_byte(pdev, 0x41, 0x00);
4191
4192         /***********************
4193          * 3. Read REV register
4194          ***********************/
4195         priv->hw_base = pci_iomap(pdev, 0, 0);
4196         if (!priv->hw_base) {
4197                 err = -ENODEV;
4198                 goto out_pci_release_regions;
4199         }
4200
4201         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4202                 (unsigned long long) pci_resource_len(pdev, 0));
4203         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4204
4205         iwl_hw_detect(priv);
4206         printk(KERN_INFO DRV_NAME
4207                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4208                 priv->cfg->name, priv->hw_rev);
4209
4210         /* amp init */
4211         err = priv->cfg->ops->lib->apm_ops.init(priv);
4212         if (err < 0) {
4213                 IWL_DEBUG_INFO("Failed to init APMG\n");
4214                 goto out_iounmap;
4215         }
4216         /*****************
4217          * 4. Read EEPROM
4218          *****************/
4219         /* Read the EEPROM */
4220         err = iwl_eeprom_init(priv);
4221         if (err) {
4222                 IWL_ERROR("Unable to init EEPROM\n");
4223                 goto out_iounmap;
4224         }
4225         err = iwl_eeprom_check_version(priv);
4226         if (err)
4227                 goto out_iounmap;
4228
4229         /* extract MAC Address */
4230         iwl_eeprom_get_mac(priv, priv->mac_addr);
4231         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4232         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4233
4234         /************************
4235          * 5. Setup HW constants
4236          ************************/
4237         /* Device-specific setup */
4238         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4239                 IWL_ERROR("failed to set hw parameters\n");
4240                 goto out_free_eeprom;
4241         }
4242
4243         /*******************
4244          * 6. Setup priv
4245          *******************/
4246
4247         err = iwl_init_drv(priv);
4248         if (err)
4249                 goto out_free_eeprom;
4250         /* At this point both hw and priv are initialized. */
4251
4252         /**********************************
4253          * 7. Initialize module parameters
4254          **********************************/
4255
4256         /* Disable radio (SW RF KILL) via parameter when loading driver */
4257         if (priv->cfg->mod_params->disable) {
4258                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4259                 IWL_DEBUG_INFO("Radio disabled.\n");
4260         }
4261
4262         /********************
4263          * 8. Setup services
4264          ********************/
4265         spin_lock_irqsave(&priv->lock, flags);
4266         iwl4965_disable_interrupts(priv);
4267         spin_unlock_irqrestore(&priv->lock, flags);
4268
4269         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4270         if (err) {
4271                 IWL_ERROR("failed to create sysfs device attributes\n");
4272                 goto out_uninit_drv;
4273         }
4274
4275
4276         iwl_setup_deferred_work(priv);
4277         iwl_setup_rx_handlers(priv);
4278
4279         /********************
4280          * 9. Conclude
4281          ********************/
4282         pci_save_state(pdev);
4283         pci_disable_device(pdev);
4284
4285         /**********************************
4286          * 10. Setup and register mac80211
4287          **********************************/
4288
4289         err = iwl_setup_mac(priv);
4290         if (err)
4291                 goto out_remove_sysfs;
4292
4293         err = iwl_dbgfs_register(priv, DRV_NAME);
4294         if (err)
4295                 IWL_ERROR("failed to create debugfs files\n");
4296
4297         err = iwl_rfkill_init(priv);
4298         if (err)
4299                 IWL_ERROR("Unable to initialize RFKILL system. "
4300                                   "Ignoring error: %d\n", err);
4301         iwl_power_initialize(priv);
4302         return 0;
4303
4304  out_remove_sysfs:
4305         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4306  out_uninit_drv:
4307         iwl_uninit_drv(priv);
4308  out_free_eeprom:
4309         iwl_eeprom_free(priv);
4310  out_iounmap:
4311         pci_iounmap(pdev, priv->hw_base);
4312  out_pci_release_regions:
4313         pci_release_regions(pdev);
4314         pci_set_drvdata(pdev, NULL);
4315  out_pci_disable_device:
4316         pci_disable_device(pdev);
4317  out_ieee80211_free_hw:
4318         ieee80211_free_hw(priv->hw);
4319  out:
4320         return err;
4321 }
4322
4323 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4324 {
4325         struct iwl_priv *priv = pci_get_drvdata(pdev);
4326         unsigned long flags;
4327
4328         if (!priv)
4329                 return;
4330
4331         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4332
4333         iwl_dbgfs_unregister(priv);
4334         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4335
4336         if (priv->mac80211_registered) {
4337                 ieee80211_unregister_hw(priv->hw);
4338                 priv->mac80211_registered = 0;
4339         }
4340
4341         set_bit(STATUS_EXIT_PENDING, &priv->status);
4342
4343         iwl4965_down(priv);
4344
4345         /* make sure we flush any pending irq or
4346          * tasklet for the driver
4347          */
4348         spin_lock_irqsave(&priv->lock, flags);
4349         iwl4965_disable_interrupts(priv);
4350         spin_unlock_irqrestore(&priv->lock, flags);
4351
4352         iwl_synchronize_irq(priv);
4353
4354         iwl_rfkill_unregister(priv);
4355         iwl4965_dealloc_ucode_pci(priv);
4356
4357         if (priv->rxq.bd)
4358                 iwl_rx_queue_free(priv, &priv->rxq);
4359         iwl_hw_txq_ctx_free(priv);
4360
4361         iwl_clear_stations_table(priv);
4362         iwl_eeprom_free(priv);
4363
4364
4365         /*netif_stop_queue(dev); */
4366         flush_workqueue(priv->workqueue);
4367
4368         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4369          * priv->workqueue... so we can't take down the workqueue
4370          * until now... */
4371         destroy_workqueue(priv->workqueue);
4372         priv->workqueue = NULL;
4373
4374         pci_iounmap(pdev, priv->hw_base);
4375         pci_release_regions(pdev);
4376         pci_disable_device(pdev);
4377         pci_set_drvdata(pdev, NULL);
4378
4379         iwl_uninit_drv(priv);
4380
4381         if (priv->ibss_beacon)
4382                 dev_kfree_skb(priv->ibss_beacon);
4383
4384         ieee80211_free_hw(priv->hw);
4385 }
4386
4387 #ifdef CONFIG_PM
4388
4389 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4390 {
4391         struct iwl_priv *priv = pci_get_drvdata(pdev);
4392
4393         if (priv->is_open) {
4394                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4395                 iwl4965_mac_stop(priv->hw);
4396                 priv->is_open = 1;
4397         }
4398
4399         pci_set_power_state(pdev, PCI_D3hot);
4400
4401         return 0;
4402 }
4403
4404 static int iwl4965_pci_resume(struct pci_dev *pdev)
4405 {
4406         struct iwl_priv *priv = pci_get_drvdata(pdev);
4407
4408         pci_set_power_state(pdev, PCI_D0);
4409
4410         if (priv->is_open)
4411                 iwl4965_mac_start(priv->hw);
4412
4413         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4414         return 0;
4415 }
4416
4417 #endif /* CONFIG_PM */
4418
4419 /*****************************************************************************
4420  *
4421  * driver and module entry point
4422  *
4423  *****************************************************************************/
4424
4425 /* Hardware specific file defines the PCI IDs table for that hardware module */
4426 static struct pci_device_id iwl_hw_card_ids[] = {
4427         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4428         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4429 #ifdef CONFIG_IWL5000
4430         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4431         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4432         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4433 #endif /* CONFIG_IWL5000 */
4434         {0}
4435 };
4436 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4437
4438 static struct pci_driver iwl_driver = {
4439         .name = DRV_NAME,
4440         .id_table = iwl_hw_card_ids,
4441         .probe = iwl4965_pci_probe,
4442         .remove = __devexit_p(iwl4965_pci_remove),
4443 #ifdef CONFIG_PM
4444         .suspend = iwl4965_pci_suspend,
4445         .resume = iwl4965_pci_resume,
4446 #endif
4447 };
4448
4449 static int __init iwl4965_init(void)
4450 {
4451
4452         int ret;
4453         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4454         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4455
4456         ret = iwl4965_rate_control_register();
4457         if (ret) {
4458                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4459                 return ret;
4460         }
4461
4462         ret = pci_register_driver(&iwl_driver);
4463         if (ret) {
4464                 IWL_ERROR("Unable to initialize PCI module\n");
4465                 goto error_register;
4466         }
4467
4468         return ret;
4469
4470 error_register:
4471         iwl4965_rate_control_unregister();
4472         return ret;
4473 }
4474
4475 static void __exit iwl4965_exit(void)
4476 {
4477         pci_unregister_driver(&iwl_driver);
4478         iwl4965_rate_control_unregister();
4479 }
4480
4481 module_exit(iwl4965_exit);
4482 module_init(iwl4965_init);