SAFE public projects git trees. - safe/jmp/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 static void iwl4965_sequence_reset(struct iwl_priv *priv)
 617 {
 618         /* Reset ieee stats */
 619
 620         /* We don't reset the net_device_stats (ieee->stats) on
 621          * re-association */
 622
 623         priv->last_seq_num = -1;
 624         priv->last_frag_num = -1;
 625         priv->last_packet_time = 0;
 626
 627         iwl_scan_cancel(priv);
 628 }
 629
 630 #define MAX_UCODE_BEACON_INTERVAL       4096
 631 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
 632
 633 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 634 {
 635         u16 new_val = 0;
 636         u16 beacon_factor = 0;
 637
 638         beacon_factor =
 639             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 640                 / MAX_UCODE_BEACON_INTERVAL;
 641         new_val = beacon_val / beacon_factor;
 642
 643         return cpu_to_le16(new_val);
 644 }
 645
 646 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 647 {
 648         u64 interval_tm_unit;
 649         u64 tsf, result;
 650         unsigned long flags;
 651         struct ieee80211_conf *conf = NULL;
 652         u16 beacon_int = 0;
 653
 654         conf = ieee80211_get_hw_conf(priv->hw);
 655
 656         spin_lock_irqsave(&priv->lock, flags);
 657         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 658         priv->rxon_timing.timestamp.dw[0] =
 659                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 660
 661         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
 662
 663         tsf = priv->timestamp;
 664
 665         beacon_int = priv->beacon_int;
 666         spin_unlock_irqrestore(&priv->lock, flags);
 667
 668         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
 669                 if (beacon_int == 0) {
 670                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 671                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 672                 } else {
 673                         priv->rxon_timing.beacon_interval =
 674                                 cpu_to_le16(beacon_int);
 675                         priv->rxon_timing.beacon_interval =
 676                             iwl4965_adjust_beacon_interval(
 677                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 678                 }
 679
 680                 priv->rxon_timing.atim_window = 0;
 681         } else {
 682                 priv->rxon_timing.beacon_interval =
 683                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 684                 /* TODO: we need to get atim_window from upper stack
 685                  * for now we set to 0 */
 686                 priv->rxon_timing.atim_window = 0;
 687         }
 688
 689         interval_tm_unit =
 690                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 691         result = do_div(tsf, interval_tm_unit);
 692         priv->rxon_timing.beacon_init_val =
 693             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 694
 695         IWL_DEBUG_ASSOC
 696             ("beacon interval %d beacon timer %d beacon tim %d\n",
 697                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 698                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 699                 le16_to_cpu(priv->rxon_timing.atim_window));
 700 }
 701
 702 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 703                                    enum ieee80211_band band)
 704 {
 705         if (band == IEEE80211_BAND_5GHZ) {
 706                 priv->staging_rxon.flags &=
 707                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 708                       | RXON_FLG_CCK_MSK);
 709                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 710         } else {
 711                 /* Copied from iwl4965_post_associate() */
 712                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 713                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 714                 else
 715                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 716
 717                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
 718                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 719
 720                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 721                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 722                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 723         }
 724 }
 725
 726 /*
 727  * initialize rxon structure with default values from eeprom
 728  */
 729 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 730 {
 731         const struct iwl_channel_info *ch_info;
 732
 733         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 734
 735         switch (priv->iw_mode) {
 736         case IEEE80211_IF_TYPE_AP:
 737                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 738                 break;
 739
 740         case IEEE80211_IF_TYPE_STA:
 741                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 742                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 743                 break;
 744
 745         case IEEE80211_IF_TYPE_IBSS:
 746                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 747                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 748                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 749                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case IEEE80211_IF_TYPE_MNTR:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 754                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 755                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 756                 break;
 757         default:
 758                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 759                 break;
 760         }
 761
 762 #if 0
 763         /* TODO:  Figure out when short_preamble would be set and cache from
 764          * that */
 765         if (!hw_to_local(priv->hw)->short_preamble)
 766                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 767         else
 768                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 769 #endif
 770
 771         ch_info = iwl_get_channel_info(priv, priv->band,
 772                                        le16_to_cpu(priv->staging_rxon.channel));
 773
 774         if (!ch_info)
 775                 ch_info = &priv->channel_info[0];
 776
 777         /*
 778          * in some case A channels are all non IBSS
 779          * in this case force B/G channel
 780          */
 781         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
 782             !(is_channel_ibss(ch_info)))
 783                 ch_info = &priv->channel_info[0];
 784
 785         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 786         priv->band = ch_info->band;
 787
 788         iwl_set_flags_for_band(priv, priv->band);
 789
 790         priv->staging_rxon.ofdm_basic_rates =
 791             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 792         priv->staging_rxon.cck_basic_rates =
 793             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 794
 795         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 796                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 797         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 798         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 799         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 800         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 801         iwl_set_rxon_chain(priv);
 802 }
 803
 804 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 805 {
 806         priv->iw_mode = mode;
 807
 808         /* init channel/phymode to values given at driver init */
 809         iwl_set_rxon_channel(priv, IEEE80211_BAND_2GHZ, 6);
 810
 811         iwl4965_connection_init_rx_config(priv);
 812         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 813
 814         iwl_clear_stations_table(priv);
 815
 816         /* dont commit rxon if rf-kill is on*/
 817         if (!iwl_is_ready_rf(priv))
 818                 return -EAGAIN;
 819
 820         cancel_delayed_work(&priv->scan_check);
 821         if (iwl_scan_cancel_timeout(priv, 100)) {
 822                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 823                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 824                 return -EAGAIN;
 825         }
 826
 827         iwl4965_commit_rxon(priv);
 828
 829         return 0;
 830 }
 831
 832 static void iwl4965_set_rate(struct iwl_priv *priv)
 833 {
 834         const struct ieee80211_supported_band *hw = NULL;
 835         struct ieee80211_rate *rate;
 836         int i;
 837
 838         hw = iwl_get_hw_mode(priv, priv->band);
 839         if (!hw) {
 840                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 841                 return;
 842         }
 843
 844         priv->active_rate = 0;
 845         priv->active_rate_basic = 0;
 846
 847         for (i = 0; i < hw->n_bitrates; i++) {
 848                 rate = &(hw->bitrates[i]);
 849                 if (rate->hw_value < IWL_RATE_COUNT)
 850                         priv->active_rate |= (1 << rate->hw_value);
 851         }
 852
 853         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 854                        priv->active_rate, priv->active_rate_basic);
 855
 856         /*
 857          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 858          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 859          * OFDM
 860          */
 861         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 862                 priv->staging_rxon.cck_basic_rates =
 863                     ((priv->active_rate_basic &
 864                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 865         else
 866                 priv->staging_rxon.cck_basic_rates =
 867                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 868
 869         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 870                 priv->staging_rxon.ofdm_basic_rates =
 871                     ((priv->active_rate_basic &
 872                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 873                       IWL_FIRST_OFDM_RATE) & 0xFF;
 874         else
 875                 priv->staging_rxon.ofdm_basic_rates =
 876                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 877 }
 878
 879 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
 880
 881 #include "iwl-spectrum.h"
 882
 883 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 884 #define BEACON_TIME_MASK_HIGH   0xFF000000
 885 #define TIME_UNIT               1024
 886
 887 /*
 888  * extended beacon time format
 889  * time in usec will be changed into a 32-bit value in 8:24 format
 890  * the high 1 byte is the beacon counts
 891  * the lower 3 bytes is the time in usec within one beacon interval
 892  */
 893
 894 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 895 {
 896         u32 quot;
 897         u32 rem;
 898         u32 interval = beacon_interval * 1024;
 899
 900         if (!interval || !usec)
 901                 return 0;
 902
 903         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 904         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 905
 906         return (quot << 24) + rem;
 907 }
 908
 909 /* base is usually what we get from ucode with each received frame,
 910  * the same as HW timer counter counting down
 911  */
 912
 913 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 914 {
 915         u32 base_low = base & BEACON_TIME_MASK_LOW;
 916         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 917         u32 interval = beacon_interval * TIME_UNIT;
 918         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 919             (addon & BEACON_TIME_MASK_HIGH);
 920
 921         if (base_low > addon_low)
 922                 res += base_low - addon_low;
 923         else if (base_low < addon_low) {
 924                 res += interval + base_low - addon_low;
 925                 res += (1 << 24);
 926         } else
 927                 res += (1 << 24);
 928
 929         return cpu_to_le32(res);
 930 }
 931
 932 static int iwl4965_get_measurement(struct iwl_priv *priv,
 933                                struct ieee80211_measurement_params *params,
 934                                u8 type)
 935 {
 936         struct iwl4965_spectrum_cmd spectrum;
 937         struct iwl_rx_packet *res;
 938         struct iwl_host_cmd cmd = {
 939                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 940                 .data = (void *)&spectrum,
 941                 .meta.flags = CMD_WANT_SKB,
 942         };
 943         u32 add_time = le64_to_cpu(params->start_time);
 944         int rc;
 945         int spectrum_resp_status;
 946         int duration = le16_to_cpu(params->duration);
 947
 948         if (iwl_is_associated(priv))
 949                 add_time =
 950                     iwl4965_usecs_to_beacons(
 951                         le64_to_cpu(params->start_time) - priv->last_tsf,
 952                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 953
 954         memset(&spectrum, 0, sizeof(spectrum));
 955
 956         spectrum.channel_count = cpu_to_le16(1);
 957         spectrum.flags =
 958             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 959         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 960         cmd.len = sizeof(spectrum);
 961         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 962
 963         if (iwl_is_associated(priv))
 964                 spectrum.start_time =
 965                     iwl4965_add_beacon_time(priv->last_beacon_time,
 966                                 add_time,
 967                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 968         else
 969                 spectrum.start_time = 0;
 970
 971         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 972         spectrum.channels[0].channel = params->channel;
 973         spectrum.channels[0].type = type;
 974         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 975                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 976                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 977
 978         rc = iwl_send_cmd_sync(priv, &cmd);
 979         if (rc)
 980                 return rc;
 981
 982         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 983         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 984                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 985                 rc = -EIO;
 986         }
 987
 988         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 989         switch (spectrum_resp_status) {
 990         case 0:         /* Command will be handled */
 991                 if (res->u.spectrum.id != 0xff) {
 992                         IWL_DEBUG_INFO
 993                             ("Replaced existing measurement: %d\n",
 994                              res->u.spectrum.id);
 995                         priv->measurement_status &= ~MEASUREMENT_READY;
 996                 }
 997                 priv->measurement_status |= MEASUREMENT_ACTIVE;
 998                 rc = 0;
 999                 break;
1000
1001         case 1:         /* Command will not be handled */
1002                 rc = -EAGAIN;
1003                 break;
1004         }
1005
1006         dev_kfree_skb_any(cmd.meta.u.skb);
1007
1008         return rc;
1009 }
1010 #endif
1011
1012 /******************************************************************************
1013  *
1014  * Generic RX handler implementations
1015  *
1016  ******************************************************************************/
1017 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1018                                 struct iwl_rx_mem_buffer *rxb)
1019 {
1020         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1021         struct iwl_alive_resp *palive;
1022         struct delayed_work *pwork;
1023
1024         palive = &pkt->u.alive_frame;
1025
1026         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1027                        "0x%01X 0x%01X\n",
1028                        palive->is_valid, palive->ver_type,
1029                        palive->ver_subtype);
1030
1031         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1032                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1033                 memcpy(&priv->card_alive_init,
1034                        &pkt->u.alive_frame,
1035                        sizeof(struct iwl_init_alive_resp));
1036                 pwork = &priv->init_alive_start;
1037         } else {
1038                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1039                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1040                        sizeof(struct iwl_alive_resp));
1041                 pwork = &priv->alive_start;
1042         }
1043
1044         /* We delay the ALIVE response by 5ms to
1045          * give the HW RF Kill time to activate... */
1046         if (palive->is_valid == UCODE_VALID_OK)
1047                 queue_delayed_work(priv->workqueue, pwork,
1048                                    msecs_to_jiffies(5));
1049         else
1050                 IWL_WARNING("uCode did not respond OK.\n");
1051 }
1052
1053 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1054                                    struct iwl_rx_mem_buffer *rxb)
1055 {
1056         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1057
1058         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1059                 "seq 0x%04X ser 0x%08X\n",
1060                 le32_to_cpu(pkt->u.err_resp.error_type),
1061                 get_cmd_string(pkt->u.err_resp.cmd_id),
1062                 pkt->u.err_resp.cmd_id,
1063                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1064                 le32_to_cpu(pkt->u.err_resp.error_info));
1065 }
1066
1067 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1068
1069 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1070 {
1071         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1072         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1073         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1074         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1075                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1076         rxon->channel = csa->channel;
1077         priv->staging_rxon.channel = csa->channel;
1078 }
1079
1080 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1081                                           struct iwl_rx_mem_buffer *rxb)
1082 {
1083 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1084         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1085         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1086
1087         if (!report->state) {
1088                 IWL_DEBUG(IWL_DL_11H,
1089                         "Spectrum Measure Notification: Start\n");
1090                 return;
1091         }
1092
1093         memcpy(&priv->measure_report, report, sizeof(*report));
1094         priv->measurement_status |= MEASUREMENT_READY;
1095 #endif
1096 }
1097
1098 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1099                                       struct iwl_rx_mem_buffer *rxb)
1100 {
1101 #ifdef CONFIG_IWLWIFI_DEBUG
1102         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1103         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1104         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1105                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1106 #endif
1107 }
1108
1109 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1110                                              struct iwl_rx_mem_buffer *rxb)
1111 {
1112         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1113         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1114                         "notification for %s:\n",
1115                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1116         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1117 }
1118
1119 static void iwl4965_bg_beacon_update(struct work_struct *work)
1120 {
1121         struct iwl_priv *priv =
1122                 container_of(work, struct iwl_priv, beacon_update);
1123         struct sk_buff *beacon;
1124
1125         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1126         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1127
1128         if (!beacon) {
1129                 IWL_ERROR("update beacon failed\n");
1130                 return;
1131         }
1132
1133         mutex_lock(&priv->mutex);
1134         /* new beacon skb is allocated every time; dispose previous.*/
1135         if (priv->ibss_beacon)
1136                 dev_kfree_skb(priv->ibss_beacon);
1137
1138         priv->ibss_beacon = beacon;
1139         mutex_unlock(&priv->mutex);
1140
1141         iwl4965_send_beacon_cmd(priv);
1142 }
1143
1144 /**
1145  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1146  *
1147  * This callback is provided in order to send a statistics request.
1148  *
1149  * This timer function is continually reset to execute within
1150  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1151  * was received.  We need to ensure we receive the statistics in order
1152  * to update the temperature used for calibrating the TXPOWER.
1153  */
1154 static void iwl4965_bg_statistics_periodic(unsigned long data)
1155 {
1156         struct iwl_priv *priv = (struct iwl_priv *)data;
1157
1158         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1159                 return;
1160
1161         iwl_send_statistics_request(priv, CMD_ASYNC);
1162 }
1163
1164 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1165                                 struct iwl_rx_mem_buffer *rxb)
1166 {
1167 #ifdef CONFIG_IWLWIFI_DEBUG
1168         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1169         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1170         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1171
1172         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1173                 "tsf %d %d rate %d\n",
1174                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1175                 beacon->beacon_notify_hdr.failure_frame,
1176                 le32_to_cpu(beacon->ibss_mgr_status),
1177                 le32_to_cpu(beacon->high_tsf),
1178                 le32_to_cpu(beacon->low_tsf), rate);
1179 #endif
1180
1181         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
1182             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1183                 queue_work(priv->workqueue, &priv->beacon_update);
1184 }
1185
1186 /* Handle notification from uCode that card's power state is changing
1187  * due to software, hardware, or critical temperature RFKILL */
1188 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1189                                     struct iwl_rx_mem_buffer *rxb)
1190 {
1191         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1192         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1193         unsigned long status = priv->status;
1194
1195         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1196                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1197                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1198
1199         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1200                      RF_CARD_DISABLED)) {
1201
1202                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1203                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1204
1205                 if (!iwl_grab_nic_access(priv)) {
1206                         iwl_write_direct32(
1207                                 priv, HBUS_TARG_MBX_C,
1208                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1209
1210                         iwl_release_nic_access(priv);
1211                 }
1212
1213                 if (!(flags & RXON_CARD_DISABLED)) {
1214                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1215                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1216                         if (!iwl_grab_nic_access(priv)) {
1217                                 iwl_write_direct32(
1218                                         priv, HBUS_TARG_MBX_C,
1219                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1220
1221                                 iwl_release_nic_access(priv);
1222                         }
1223                 }
1224
1225                 if (flags & RF_CARD_DISABLED) {
1226                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1227                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1228                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1229                         if (!iwl_grab_nic_access(priv))
1230                                 iwl_release_nic_access(priv);
1231                 }
1232         }
1233
1234         if (flags & HW_CARD_DISABLED)
1235                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1236         else
1237                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1238
1239
1240         if (flags & SW_CARD_DISABLED)
1241                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1242         else
1243                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1244
1245         if (!(flags & RXON_CARD_DISABLED))
1246                 iwl_scan_cancel(priv);
1247
1248         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1249              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1250             (test_bit(STATUS_RF_KILL_SW, &status) !=
1251              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1252                 queue_work(priv->workqueue, &priv->rf_kill);
1253         else
1254                 wake_up_interruptible(&priv->wait_command_queue);
1255 }
1256
1257 /**
1258  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1259  *
1260  * Setup the RX handlers for each of the reply types sent from the uCode
1261  * to the host.
1262  *
1263  * This function chains into the hardware specific files for them to setup
1264  * any hardware specific handlers as well.
1265  */
1266 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
1267 {
1268         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1269         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1270         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1271         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1272             iwl4965_rx_spectrum_measure_notif;
1273         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1274         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1275             iwl4965_rx_pm_debug_statistics_notif;
1276         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1277
1278         /*
1279          * The same handler is used for both the REPLY to a discrete
1280          * statistics request from the host as well as for the periodic
1281          * statistics notifications (after received beacons) from the uCode.
1282          */
1283         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1284         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1285
1286         iwl_setup_rx_scan_handlers(priv);
1287
1288         /* status change handler */
1289         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1290
1291         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1292             iwl_rx_missed_beacon_notif;
1293         /* Rx handlers */
1294         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1295         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1296         /* Set up hardware specific Rx handlers */
1297         priv->cfg->ops->lib->rx_handler_setup(priv);
1298 }
1299
1300 /*
1301  * this should be called while priv->lock is locked
1302 */
1303 static void __iwl_rx_replenish(struct iwl_priv *priv)
1304 {
1305         iwl_rx_allocate(priv);
1306         iwl_rx_queue_restock(priv);
1307 }
1308
1309
1310 /**
1311  * iwl_rx_handle - Main entry function for receiving responses from uCode
1312  *
1313  * Uses the priv->rx_handlers callback function array to invoke
1314  * the appropriate handlers, including command responses,
1315  * frame-received notifications, and other notifications.
1316  */
1317 void iwl_rx_handle(struct iwl_priv *priv)
1318 {
1319         struct iwl_rx_mem_buffer *rxb;
1320         struct iwl_rx_packet *pkt;
1321         struct iwl_rx_queue *rxq = &priv->rxq;
1322         u32 r, i;
1323         int reclaim;
1324         unsigned long flags;
1325         u8 fill_rx = 0;
1326         u32 count = 8;
1327
1328         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1329          * buffer that the driver may process (last buffer filled by ucode). */
1330         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1331         i = rxq->read;
1332
1333         /* Rx interrupt, but nothing sent from uCode */
1334         if (i == r)
1335                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1336
1337         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1338                 fill_rx = 1;
1339
1340         while (i != r) {
1341                 rxb = rxq->queue[i];
1342
1343                 /* If an RXB doesn't have a Rx queue slot associated with it,
1344                  * then a bug has been introduced in the queue refilling
1345                  * routines -- catch it here */
1346                 BUG_ON(rxb == NULL);
1347
1348                 rxq->queue[i] = NULL;
1349
1350                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
1351                                             priv->hw_params.rx_buf_size,
1352                                             PCI_DMA_FROMDEVICE);
1353                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1354
1355                 /* Reclaim a command buffer only if this packet is a response
1356                  *   to a (driver-originated) command.
1357                  * If the packet (e.g. Rx frame) originated from uCode,
1358                  *   there is no command buffer to reclaim.
1359                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1360                  *   but apparently a few don't get set; catch them here. */
1361                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1362                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1363                         (pkt->hdr.cmd != REPLY_RX) &&
1364                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1365                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1366                         (pkt->hdr.cmd != REPLY_TX);
1367
1368                 /* Based on type of command response or notification,
1369                  *   handle those that need handling via function in
1370                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1371                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1372                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1373                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1374                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1375                 } else {
1376                         /* No handling needed */
1377                         IWL_DEBUG(IWL_DL_RX,
1378                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1379                                 r, i, get_cmd_string(pkt->hdr.cmd),
1380                                 pkt->hdr.cmd);
1381                 }
1382
1383                 if (reclaim) {
1384                         /* Invoke any callbacks, transfer the skb to caller, and
1385                          * fire off the (possibly) blocking iwl_send_cmd()
1386                          * as we reclaim the driver command queue */
1387                         if (rxb && rxb->skb)
1388                                 iwl_tx_cmd_complete(priv, rxb);
1389                         else
1390                                 IWL_WARNING("Claim null rxb?\n");
1391                 }
1392
1393                 /* For now we just don't re-use anything.  We can tweak this
1394                  * later to try and re-use notification packets and SKBs that
1395                  * fail to Rx correctly */
1396                 if (rxb->skb != NULL) {
1397                         priv->alloc_rxb_skb--;
1398                         dev_kfree_skb_any(rxb->skb);
1399                         rxb->skb = NULL;
1400                 }
1401
1402                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
1403                                  priv->hw_params.rx_buf_size,
1404                                  PCI_DMA_FROMDEVICE);
1405                 spin_lock_irqsave(&rxq->lock, flags);
1406                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1407                 spin_unlock_irqrestore(&rxq->lock, flags);
1408                 i = (i + 1) & RX_QUEUE_MASK;
1409                 /* If there are a lot of unused frames,
1410                  * restock the Rx queue so ucode wont assert. */
1411                 if (fill_rx) {
1412                         count++;
1413                         if (count >= 8) {
1414                                 priv->rxq.read = i;
1415                                 __iwl_rx_replenish(priv);
1416                                 count = 0;
1417                         }
1418                 }
1419         }
1420
1421         /* Backtrack one entry */
1422         priv->rxq.read = i;
1423         iwl_rx_queue_restock(priv);
1424 }
1425
1426 #ifdef CONFIG_IWLWIFI_DEBUG
1427 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1428 {
1429         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1430         DECLARE_MAC_BUF(mac);
1431
1432         IWL_DEBUG_RADIO("RX CONFIG:\n");
1433         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1434         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1435         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1436         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1437                         le32_to_cpu(rxon->filter_flags));
1438         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1439         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1440                         rxon->ofdm_basic_rates);
1441         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1442         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1443                         print_mac(mac, rxon->node_addr));
1444         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1445                         print_mac(mac, rxon->bssid_addr));
1446         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1447 }
1448 #endif
1449
1450 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1451 {
1452         IWL_DEBUG_ISR("Enabling interrupts\n");
1453         set_bit(STATUS_INT_ENABLED, &priv->status);
1454         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1455 }
1456
1457 /* call this function to flush any scheduled tasklet */
1458 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1459 {
1460         /* wait to make sure we flush pedding tasklet*/
1461         synchronize_irq(priv->pci_dev->irq);
1462         tasklet_kill(&priv->irq_tasklet);
1463 }
1464
1465 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1466 {
1467         clear_bit(STATUS_INT_ENABLED, &priv->status);
1468
1469         /* disable interrupts from uCode/NIC to host */
1470         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1471
1472         /* acknowledge/clear/reset any interrupts still pending
1473          * from uCode or flow handler (Rx/Tx DMA) */
1474         iwl_write32(priv, CSR_INT, 0xffffffff);
1475         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1476         IWL_DEBUG_ISR("Disabled interrupts\n");
1477 }
1478
1479
1480 /**
1481  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1482  */
1483 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1484 {
1485         /* Set the FW error flag -- cleared on iwl4965_down */
1486         set_bit(STATUS_FW_ERROR, &priv->status);
1487
1488         /* Cancel currently queued command. */
1489         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1490
1491 #ifdef CONFIG_IWLWIFI_DEBUG
1492         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1493                 iwl_dump_nic_error_log(priv);
1494                 iwl_dump_nic_event_log(priv);
1495                 iwl4965_print_rx_config_cmd(priv);
1496         }
1497 #endif
1498
1499         wake_up_interruptible(&priv->wait_command_queue);
1500
1501         /* Keep the restart process from trying to send host
1502          * commands by clearing the INIT status bit */
1503         clear_bit(STATUS_READY, &priv->status);
1504
1505         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1506                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1507                           "Restarting adapter due to uCode error.\n");
1508
1509                 if (iwl_is_associated(priv)) {
1510                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1511                                sizeof(priv->recovery_rxon));
1512                         priv->error_recovering = 1;
1513                 }
1514                 if (priv->cfg->mod_params->restart_fw)
1515                         queue_work(priv->workqueue, &priv->restart);
1516         }
1517 }
1518
1519 static void iwl4965_error_recovery(struct iwl_priv *priv)
1520 {
1521         unsigned long flags;
1522
1523         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1524                sizeof(priv->staging_rxon));
1525         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1526         iwl4965_commit_rxon(priv);
1527
1528         iwl_rxon_add_station(priv, priv->bssid, 1);
1529
1530         spin_lock_irqsave(&priv->lock, flags);
1531         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1532         priv->error_recovering = 0;
1533         spin_unlock_irqrestore(&priv->lock, flags);
1534 }
1535
1536 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1537 {
1538         u32 inta, handled = 0;
1539         u32 inta_fh;
1540         unsigned long flags;
1541 #ifdef CONFIG_IWLWIFI_DEBUG
1542         u32 inta_mask;
1543 #endif
1544
1545         spin_lock_irqsave(&priv->lock, flags);
1546
1547         /* Ack/clear/reset pending uCode interrupts.
1548          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1549          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1550         inta = iwl_read32(priv, CSR_INT);
1551         iwl_write32(priv, CSR_INT, inta);
1552
1553         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1554          * Any new interrupts that happen after this, either while we're
1555          * in this tasklet, or later, will show up in next ISR/tasklet. */
1556         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1557         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1558
1559 #ifdef CONFIG_IWLWIFI_DEBUG
1560         if (priv->debug_level & IWL_DL_ISR) {
1561                 /* just for debug */
1562                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1563                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1564                               inta, inta_mask, inta_fh);
1565         }
1566 #endif
1567
1568         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1569          * atomic, make sure that inta covers all the interrupts that
1570          * we've discovered, even if FH interrupt came in just after
1571          * reading CSR_INT. */
1572         if (inta_fh & CSR49_FH_INT_RX_MASK)
1573                 inta |= CSR_INT_BIT_FH_RX;
1574         if (inta_fh & CSR49_FH_INT_TX_MASK)
1575                 inta |= CSR_INT_BIT_FH_TX;
1576
1577         /* Now service all interrupt bits discovered above. */
1578         if (inta & CSR_INT_BIT_HW_ERR) {
1579                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1580
1581                 /* Tell the device to stop sending interrupts */
1582                 iwl4965_disable_interrupts(priv);
1583
1584                 iwl4965_irq_handle_error(priv);
1585
1586                 handled |= CSR_INT_BIT_HW_ERR;
1587
1588                 spin_unlock_irqrestore(&priv->lock, flags);
1589
1590                 return;
1591         }
1592
1593 #ifdef CONFIG_IWLWIFI_DEBUG
1594         if (priv->debug_level & (IWL_DL_ISR)) {
1595                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1596                 if (inta & CSR_INT_BIT_SCD)
1597                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1598                                       "the frame/frames.\n");
1599
1600                 /* Alive notification via Rx interrupt will do the real work */
1601                 if (inta & CSR_INT_BIT_ALIVE)
1602                         IWL_DEBUG_ISR("Alive interrupt\n");
1603         }
1604 #endif
1605         /* Safely ignore these bits for debug checks below */
1606         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1607
1608         /* HW RF KILL switch toggled */
1609         if (inta & CSR_INT_BIT_RF_KILL) {
1610                 int hw_rf_kill = 0;
1611                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1612                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1613                         hw_rf_kill = 1;
1614
1615                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1616                                 hw_rf_kill ? "disable radio":"enable radio");
1617
1618                 /* Queue restart only if RF_KILL switch was set to "kill"
1619                  *   when we loaded driver, and is now set to "enable".
1620                  * After we're Alive, RF_KILL gets handled by
1621                  *   iwl4965_rx_card_state_notif() */
1622                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
1623                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1624                         queue_work(priv->workqueue, &priv->restart);
1625                 }
1626
1627                 handled |= CSR_INT_BIT_RF_KILL;
1628         }
1629
1630         /* Chip got too hot and stopped itself */
1631         if (inta & CSR_INT_BIT_CT_KILL) {
1632                 IWL_ERROR("Microcode CT kill error detected.\n");
1633                 handled |= CSR_INT_BIT_CT_KILL;
1634         }
1635
1636         /* Error detected by uCode */
1637         if (inta & CSR_INT_BIT_SW_ERR) {
1638                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1639                           inta);
1640                 iwl4965_irq_handle_error(priv);
1641                 handled |= CSR_INT_BIT_SW_ERR;
1642         }
1643
1644         /* uCode wakes up after power-down sleep */
1645         if (inta & CSR_INT_BIT_WAKEUP) {
1646                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1647                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1648                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1649                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1650                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1651                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1652                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1653                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1654
1655                 handled |= CSR_INT_BIT_WAKEUP;
1656         }
1657
1658         /* All uCode command responses, including Tx command responses,
1659          * Rx "responses" (frame-received notification), and other
1660          * notifications from uCode come through here*/
1661         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1662                 iwl_rx_handle(priv);
1663                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1664         }
1665
1666         if (inta & CSR_INT_BIT_FH_TX) {
1667                 IWL_DEBUG_ISR("Tx interrupt\n");
1668                 handled |= CSR_INT_BIT_FH_TX;
1669                 /* FH finished to write, send event */
1670                 priv->ucode_write_complete = 1;
1671                 wake_up_interruptible(&priv->wait_command_queue);
1672         }
1673
1674         if (inta & ~handled)
1675                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1676
1677         if (inta & ~CSR_INI_SET_MASK) {
1678                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1679                          inta & ~CSR_INI_SET_MASK);
1680                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1681         }
1682
1683         /* Re-enable all interrupts */
1684         /* only Re-enable if diabled by irq */
1685         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1686                 iwl4965_enable_interrupts(priv);
1687
1688 #ifdef CONFIG_IWLWIFI_DEBUG
1689         if (priv->debug_level & (IWL_DL_ISR)) {
1690                 inta = iwl_read32(priv, CSR_INT);
1691                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1692                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1693                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1694                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1695         }
1696 #endif
1697         spin_unlock_irqrestore(&priv->lock, flags);
1698 }
1699
1700 static irqreturn_t iwl4965_isr(int irq, void *data)
1701 {
1702         struct iwl_priv *priv = data;
1703         u32 inta, inta_mask;
1704         u32 inta_fh;
1705         if (!priv)
1706                 return IRQ_NONE;
1707
1708         spin_lock(&priv->lock);
1709
1710         /* Disable (but don't clear!) interrupts here to avoid
1711          *    back-to-back ISRs and sporadic interrupts from our NIC.
1712          * If we have something to service, the tasklet will re-enable ints.
1713          * If we *don't* have something, we'll re-enable before leaving here. */
1714         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1715         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1716
1717         /* Discover which interrupts are active/pending */
1718         inta = iwl_read32(priv, CSR_INT);
1719         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1720
1721         /* Ignore interrupt if there's nothing in NIC to service.
1722          * This may be due to IRQ shared with another device,
1723          * or due to sporadic interrupts thrown from our NIC. */
1724         if (!inta && !inta_fh) {
1725                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1726                 goto none;
1727         }
1728
1729         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1730                 /* Hardware disappeared. It might have already raised
1731                  * an interrupt */
1732                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1733                 goto unplugged;
1734         }
1735
1736         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1737                       inta, inta_mask, inta_fh);
1738
1739         inta &= ~CSR_INT_BIT_SCD;
1740
1741         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1742         if (likely(inta || inta_fh))
1743                 tasklet_schedule(&priv->irq_tasklet);
1744
1745  unplugged:
1746         spin_unlock(&priv->lock);
1747         return IRQ_HANDLED;
1748
1749  none:
1750         /* re-enable interrupts here since we don't have anything to service. */
1751         /* only Re-enable if diabled by irq */
1752         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1753                 iwl4965_enable_interrupts(priv);
1754         spin_unlock(&priv->lock);
1755         return IRQ_NONE;
1756 }
1757
1758 /******************************************************************************
1759  *
1760  * uCode download functions
1761  *
1762  ******************************************************************************/
1763
1764 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1765 {
1766         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1767         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1768         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1769         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1770         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1771         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1772 }
1773
1774 static void iwl4965_nic_start(struct iwl_priv *priv)
1775 {
1776         /* Remove all resets to allow NIC to operate */
1777         iwl_write32(priv, CSR_RESET, 0);
1778 }
1779
1780
1781 /**
1782  * iwl4965_read_ucode - Read uCode images from disk file.
1783  *
1784  * Copy into buffers for card to fetch via bus-mastering
1785  */
1786 static int iwl4965_read_ucode(struct iwl_priv *priv)
1787 {
1788         struct iwl_ucode *ucode;
1789         int ret;
1790         const struct firmware *ucode_raw;
1791         const char *name = priv->cfg->fw_name;
1792         u8 *src;
1793         size_t len;
1794         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1795
1796         /* Ask kernel firmware_class module to get the boot firmware off disk.
1797          * request_firmware() is synchronous, file is in memory on return. */
1798         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1799         if (ret < 0) {
1800                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1801                                         name, ret);
1802                 goto error;
1803         }
1804
1805         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1806                        name, ucode_raw->size);
1807
1808         /* Make sure that we got at least our header! */
1809         if (ucode_raw->size < sizeof(*ucode)) {
1810                 IWL_ERROR("File size way too small!\n");
1811                 ret = -EINVAL;
1812                 goto err_release;
1813         }
1814
1815         /* Data from ucode file:  header followed by uCode images */
1816         ucode = (void *)ucode_raw->data;
1817
1818         ver = le32_to_cpu(ucode->ver);
1819         inst_size = le32_to_cpu(ucode->inst_size);
1820         data_size = le32_to_cpu(ucode->data_size);
1821         init_size = le32_to_cpu(ucode->init_size);
1822         init_data_size = le32_to_cpu(ucode->init_data_size);
1823         boot_size = le32_to_cpu(ucode->boot_size);
1824
1825         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1826         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1827                        inst_size);
1828         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1829                        data_size);
1830         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1831                        init_size);
1832         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1833                        init_data_size);
1834         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1835                        boot_size);
1836
1837         /* Verify size of file vs. image size info in file's header */
1838         if (ucode_raw->size < sizeof(*ucode) +
1839                 inst_size + data_size + init_size +
1840                 init_data_size + boot_size) {
1841
1842                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1843                                (int)ucode_raw->size);
1844                 ret = -EINVAL;
1845                 goto err_release;
1846         }
1847
1848         /* Verify that uCode images will fit in card's SRAM */
1849         if (inst_size > priv->hw_params.max_inst_size) {
1850                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1851                                inst_size);
1852                 ret = -EINVAL;
1853                 goto err_release;
1854         }
1855
1856         if (data_size > priv->hw_params.max_data_size) {
1857                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1858                                 data_size);
1859                 ret = -EINVAL;
1860                 goto err_release;
1861         }
1862         if (init_size > priv->hw_params.max_inst_size) {
1863                 IWL_DEBUG_INFO
1864                     ("uCode init instr len %d too large to fit in\n",
1865                       init_size);
1866                 ret = -EINVAL;
1867                 goto err_release;
1868         }
1869         if (init_data_size > priv->hw_params.max_data_size) {
1870                 IWL_DEBUG_INFO
1871                     ("uCode init data len %d too large to fit in\n",
1872                       init_data_size);
1873                 ret = -EINVAL;
1874                 goto err_release;
1875         }
1876         if (boot_size > priv->hw_params.max_bsm_size) {
1877                 IWL_DEBUG_INFO
1878                     ("uCode boot instr len %d too large to fit in\n",
1879                       boot_size);
1880                 ret = -EINVAL;
1881                 goto err_release;
1882         }
1883
1884         /* Allocate ucode buffers for card's bus-master loading ... */
1885
1886         /* Runtime instructions and 2 copies of data:
1887          * 1) unmodified from disk
1888          * 2) backup cache for save/restore during power-downs */
1889         priv->ucode_code.len = inst_size;
1890         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1891
1892         priv->ucode_data.len = data_size;
1893         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1894
1895         priv->ucode_data_backup.len = data_size;
1896         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1897
1898         /* Initialization instructions and data */
1899         if (init_size && init_data_size) {
1900                 priv->ucode_init.len = init_size;
1901                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1902
1903                 priv->ucode_init_data.len = init_data_size;
1904                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1905
1906                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1907                         goto err_pci_alloc;
1908         }
1909
1910         /* Bootstrap (instructions only, no data) */
1911         if (boot_size) {
1912                 priv->ucode_boot.len = boot_size;
1913                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1914
1915                 if (!priv->ucode_boot.v_addr)
1916                         goto err_pci_alloc;
1917         }
1918
1919         /* Copy images into buffers for card's bus-master reads ... */
1920
1921         /* Runtime instructions (first block of data in file) */
1922         src = &ucode->data[0];
1923         len = priv->ucode_code.len;
1924         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1925         memcpy(priv->ucode_code.v_addr, src, len);
1926         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1927                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1928
1929         /* Runtime data (2nd block)
1930          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1931         src = &ucode->data[inst_size];
1932         len = priv->ucode_data.len;
1933         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1934         memcpy(priv->ucode_data.v_addr, src, len);
1935         memcpy(priv->ucode_data_backup.v_addr, src, len);
1936
1937         /* Initialization instructions (3rd block) */
1938         if (init_size) {
1939                 src = &ucode->data[inst_size + data_size];
1940                 len = priv->ucode_init.len;
1941                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1942                                 len);
1943                 memcpy(priv->ucode_init.v_addr, src, len);
1944         }
1945
1946         /* Initialization data (4th block) */
1947         if (init_data_size) {
1948                 src = &ucode->data[inst_size + data_size + init_size];
1949                 len = priv->ucode_init_data.len;
1950                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1951                                len);
1952                 memcpy(priv->ucode_init_data.v_addr, src, len);
1953         }
1954
1955         /* Bootstrap instructions (5th block) */
1956         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1957         len = priv->ucode_boot.len;
1958         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1959         memcpy(priv->ucode_boot.v_addr, src, len);
1960
1961         /* We have our copies now, allow OS release its copies */
1962         release_firmware(ucode_raw);
1963         return 0;
1964
1965  err_pci_alloc:
1966         IWL_ERROR("failed to allocate pci memory\n");
1967         ret = -ENOMEM;
1968         iwl4965_dealloc_ucode_pci(priv);
1969
1970  err_release:
1971         release_firmware(ucode_raw);
1972
1973  error:
1974         return ret;
1975 }
1976
1977 /**
1978  * iwl_alive_start - called after REPLY_ALIVE notification received
1979  *                   from protocol/runtime uCode (initialization uCode's
1980  *                   Alive gets handled by iwl_init_alive_start()).
1981  */
1982 static void iwl_alive_start(struct iwl_priv *priv)
1983 {
1984         int ret = 0;
1985
1986         IWL_DEBUG_INFO("Runtime Alive received.\n");
1987
1988         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
1989                 /* We had an error bringing up the hardware, so take it
1990                  * all the way back down so we can try again */
1991                 IWL_DEBUG_INFO("Alive failed.\n");
1992                 goto restart;
1993         }
1994
1995         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
1996          * This is a paranoid check, because we would not have gotten the
1997          * "runtime" alive if code weren't properly loaded.  */
1998         if (iwl_verify_ucode(priv)) {
1999                 /* Runtime instruction load was bad;
2000                  * take it all the way back down so we can try again */
2001                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2002                 goto restart;
2003         }
2004
2005         iwl_clear_stations_table(priv);
2006         ret = priv->cfg->ops->lib->alive_notify(priv);
2007         if (ret) {
2008                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2009                             ret);
2010                 goto restart;
2011         }
2012
2013         /* After the ALIVE response, we can send host commands to 4965 uCode */
2014         set_bit(STATUS_ALIVE, &priv->status);
2015
2016         if (iwl_is_rfkill(priv))
2017                 return;
2018
2019         ieee80211_wake_queues(priv->hw);
2020
2021         priv->active_rate = priv->rates_mask;
2022         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2023
2024         if (iwl_is_associated(priv)) {
2025                 struct iwl_rxon_cmd *active_rxon =
2026                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2027
2028                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2029                        sizeof(priv->staging_rxon));
2030                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2031         } else {
2032                 /* Initialize our rx_config data */
2033                 iwl4965_connection_init_rx_config(priv);
2034                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2035         }
2036
2037         /* Configure Bluetooth device coexistence support */
2038         iwl4965_send_bt_config(priv);
2039
2040         iwl_reset_run_time_calib(priv);
2041
2042         /* Configure the adapter for unassociated operation */
2043         iwl4965_commit_rxon(priv);
2044
2045         /* At this point, the NIC is initialized and operational */
2046         iwl_rf_kill_ct_config(priv);
2047
2048         iwl_leds_register(priv);
2049
2050         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2051         set_bit(STATUS_READY, &priv->status);
2052         wake_up_interruptible(&priv->wait_command_queue);
2053
2054         if (priv->error_recovering)
2055                 iwl4965_error_recovery(priv);
2056
2057         iwl_power_update_mode(priv, 1);
2058         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
2059
2060         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2061                 iwl4965_set_mode(priv, priv->iw_mode);
2062
2063         return;
2064
2065  restart:
2066         queue_work(priv->workqueue, &priv->restart);
2067 }
2068
2069 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2070
2071 static void __iwl4965_down(struct iwl_priv *priv)
2072 {
2073         unsigned long flags;
2074         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2075
2076         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2077
2078         if (!exit_pending)
2079                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2080
2081         iwl_leds_unregister(priv);
2082
2083         iwl_clear_stations_table(priv);
2084
2085         /* Unblock any waiting calls */
2086         wake_up_interruptible_all(&priv->wait_command_queue);
2087
2088         /* Wipe out the EXIT_PENDING status bit if we are not actually
2089          * exiting the module */
2090         if (!exit_pending)
2091                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2092
2093         /* stop and reset the on-board processor */
2094         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2095
2096         /* tell the device to stop sending interrupts */
2097         spin_lock_irqsave(&priv->lock, flags);
2098         iwl4965_disable_interrupts(priv);
2099         spin_unlock_irqrestore(&priv->lock, flags);
2100         iwl_synchronize_irq(priv);
2101
2102         if (priv->mac80211_registered)
2103                 ieee80211_stop_queues(priv->hw);
2104
2105         /* If we have not previously called iwl4965_init() then
2106          * clear all bits but the RF Kill and SUSPEND bits and return */
2107         if (!iwl_is_init(priv)) {
2108                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2109                                         STATUS_RF_KILL_HW |
2110                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2111                                         STATUS_RF_KILL_SW |
2112                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2113                                         STATUS_GEO_CONFIGURED |
2114                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2115                                         STATUS_IN_SUSPEND;
2116                 goto exit;
2117         }
2118
2119         /* ...otherwise clear out all the status bits but the RF Kill and
2120          * SUSPEND bits and continue taking the NIC down. */
2121         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2122                                 STATUS_RF_KILL_HW |
2123                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2124                                 STATUS_RF_KILL_SW |
2125                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2126                                 STATUS_GEO_CONFIGURED |
2127                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2128                                 STATUS_IN_SUSPEND |
2129                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2130                                 STATUS_FW_ERROR;
2131
2132         spin_lock_irqsave(&priv->lock, flags);
2133         iwl_clear_bit(priv, CSR_GP_CNTRL,
2134                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2135         spin_unlock_irqrestore(&priv->lock, flags);
2136
2137         iwl_txq_ctx_stop(priv);
2138         iwl_rxq_stop(priv);
2139
2140         spin_lock_irqsave(&priv->lock, flags);
2141         if (!iwl_grab_nic_access(priv)) {
2142                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2143                                          APMG_CLK_VAL_DMA_CLK_RQT);
2144                 iwl_release_nic_access(priv);
2145         }
2146         spin_unlock_irqrestore(&priv->lock, flags);
2147
2148         udelay(5);
2149
2150         /* FIXME: apm_ops.suspend(priv) */
2151         priv->cfg->ops->lib->apm_ops.reset(priv);
2152         priv->cfg->ops->lib->free_shared_mem(priv);
2153
2154  exit:
2155         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2156
2157         if (priv->ibss_beacon)
2158                 dev_kfree_skb(priv->ibss_beacon);
2159         priv->ibss_beacon = NULL;
2160
2161         /* clear out any free frames */
2162         iwl_clear_free_frames(priv);
2163 }
2164
2165 static void iwl4965_down(struct iwl_priv *priv)
2166 {
2167         mutex_lock(&priv->mutex);
2168         __iwl4965_down(priv);
2169         mutex_unlock(&priv->mutex);
2170
2171         iwl_cancel_deferred_work(priv);
2172 }
2173
2174 #define MAX_HW_RESTARTS 5
2175
2176 static int __iwl4965_up(struct iwl_priv *priv)
2177 {
2178         int i;
2179         int ret;
2180
2181         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2182                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2183                 return -EIO;
2184         }
2185
2186         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2187                 IWL_ERROR("ucode not available for device bringup\n");
2188                 return -EIO;
2189         }
2190
2191         /* If platform's RF_KILL switch is NOT set to KILL */
2192         if (iwl_read32(priv, CSR_GP_CNTRL) &
2193                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2194                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2195         else {
2196                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2197                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
2198                         iwl_rfkill_set_hw_state(priv);
2199                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
2200                         return -ENODEV;
2201                 }
2202         }
2203
2204         iwl_rfkill_set_hw_state(priv);
2205         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2206
2207         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2208         if (ret) {
2209                 IWL_ERROR("Unable to allocate shared memory\n");
2210                 return ret;
2211         }
2212
2213         ret = iwl_hw_nic_init(priv);
2214         if (ret) {
2215                 IWL_ERROR("Unable to init nic\n");
2216                 return ret;
2217         }
2218
2219         /* make sure rfkill handshake bits are cleared */
2220         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2221         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2222                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2223
2224         /* clear (again), then enable host interrupts */
2225         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2226         iwl4965_enable_interrupts(priv);
2227
2228         /* really make sure rfkill handshake bits are cleared */
2229         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2230         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2231
2232         /* Copy original ucode data image from disk into backup cache.
2233          * This will be used to initialize the on-board processor's
2234          * data SRAM for a clean start when the runtime program first loads. */
2235         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2236                priv->ucode_data.len);
2237
2238         /* We return success when we resume from suspend and rf_kill is on. */
2239         if (test_bit(STATUS_RF_KILL_HW, &priv->status) ||
2240             test_bit(STATUS_RF_KILL_SW, &priv->status))
2241                 return 0;
2242
2243         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2244
2245                 iwl_clear_stations_table(priv);
2246
2247                 /* load bootstrap state machine,
2248                  * load bootstrap program into processor's memory,
2249                  * prepare to load the "initialize" uCode */
2250                 ret = priv->cfg->ops->lib->load_ucode(priv);
2251
2252                 if (ret) {
2253                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2254                         continue;
2255                 }
2256
2257                 /* Clear out the uCode error bit if it is set */
2258                 clear_bit(STATUS_FW_ERROR, &priv->status);
2259
2260                 /* start card; "initialize" will load runtime ucode */
2261                 iwl4965_nic_start(priv);
2262
2263                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2264
2265                 return 0;
2266         }
2267
2268         set_bit(STATUS_EXIT_PENDING, &priv->status);
2269         __iwl4965_down(priv);
2270         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2271
2272         /* tried to restart and config the device for as long as our
2273          * patience could withstand */
2274         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2275         return -EIO;
2276 }
2277
2278
2279 /*****************************************************************************
2280  *
2281  * Workqueue callbacks
2282  *
2283  *****************************************************************************/
2284
2285 static void iwl_bg_init_alive_start(struct work_struct *data)
2286 {
2287         struct iwl_priv *priv =
2288             container_of(data, struct iwl_priv, init_alive_start.work);
2289
2290         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2291                 return;
2292
2293         mutex_lock(&priv->mutex);
2294         priv->cfg->ops->lib->init_alive_start(priv);
2295         mutex_unlock(&priv->mutex);
2296 }
2297
2298 static void iwl_bg_alive_start(struct work_struct *data)
2299 {
2300         struct iwl_priv *priv =
2301             container_of(data, struct iwl_priv, alive_start.work);
2302
2303         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2304                 return;
2305
2306         mutex_lock(&priv->mutex);
2307         iwl_alive_start(priv);
2308         mutex_unlock(&priv->mutex);
2309 }
2310
2311 static void iwl4965_bg_rf_kill(struct work_struct *work)
2312 {
2313         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2314
2315         wake_up_interruptible(&priv->wait_command_queue);
2316
2317         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2318                 return;
2319
2320         mutex_lock(&priv->mutex);
2321
2322         if (!iwl_is_rfkill(priv)) {
2323                 IWL_DEBUG(IWL_DL_RF_KILL,
2324                           "HW and/or SW RF Kill no longer active, restarting "
2325                           "device\n");
2326                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2327                         queue_work(priv->workqueue, &priv->restart);
2328         } else {
2329                 /* make sure mac80211 stop sending Tx frame */
2330                 if (priv->mac80211_registered)
2331                         ieee80211_stop_queues(priv->hw);
2332
2333                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2334                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2335                                           "disabled by SW switch\n");
2336                 else
2337                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2338                                     "Kill switch must be turned off for "
2339                                     "wireless networking to work.\n");
2340         }
2341         iwl_rfkill_set_hw_state(priv);
2342
2343         mutex_unlock(&priv->mutex);
2344 }
2345
2346 static void iwl4965_bg_set_monitor(struct work_struct *work)
2347 {
2348         struct iwl_priv *priv = container_of(work,
2349                                 struct iwl_priv, set_monitor);
2350         int ret;
2351
2352         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2353
2354         mutex_lock(&priv->mutex);
2355
2356         ret = iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR);
2357
2358         if (ret) {
2359                 if (ret == -EAGAIN)
2360                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2361                 else
2362                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2363         }
2364
2365         mutex_unlock(&priv->mutex);
2366 }
2367
2368 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2369 {
2370         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2371                         run_time_calib_work);
2372
2373         mutex_lock(&priv->mutex);
2374
2375         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2376             test_bit(STATUS_SCANNING, &priv->status)) {
2377                 mutex_unlock(&priv->mutex);
2378                 return;
2379         }
2380
2381         if (priv->start_calib) {
2382                 iwl_chain_noise_calibration(priv, &priv->statistics);
2383
2384                 iwl_sensitivity_calibration(priv, &priv->statistics);
2385         }
2386
2387         mutex_unlock(&priv->mutex);
2388         return;
2389 }
2390
2391 static void iwl4965_bg_up(struct work_struct *data)
2392 {
2393         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2394
2395         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2396                 return;
2397
2398         mutex_lock(&priv->mutex);
2399         __iwl4965_up(priv);
2400         mutex_unlock(&priv->mutex);
2401 }
2402
2403 static void iwl4965_bg_restart(struct work_struct *data)
2404 {
2405         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2406
2407         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2408                 return;
2409
2410         iwl4965_down(priv);
2411         queue_work(priv->workqueue, &priv->up);
2412 }
2413
2414 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2415 {
2416         struct iwl_priv *priv =
2417             container_of(data, struct iwl_priv, rx_replenish);
2418
2419         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2420                 return;
2421
2422         mutex_lock(&priv->mutex);
2423         iwl_rx_replenish(priv);
2424         mutex_unlock(&priv->mutex);
2425 }
2426
2427 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2428
2429 static void iwl4965_post_associate(struct iwl_priv *priv)
2430 {
2431         struct ieee80211_conf *conf = NULL;
2432         int ret = 0;
2433         DECLARE_MAC_BUF(mac);
2434
2435         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2436                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
2437                 return;
2438         }
2439
2440         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2441                         priv->assoc_id,
2442                         print_mac(mac, priv->active_rxon.bssid_addr));
2443
2444
2445         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2446                 return;
2447
2448
2449         if (!priv->vif || !priv->is_open)
2450                 return;
2451
2452         iwl_scan_cancel_timeout(priv, 200);
2453
2454         conf = ieee80211_get_hw_conf(priv->hw);
2455
2456         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2457         iwl4965_commit_rxon(priv);
2458
2459         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2460         iwl4965_setup_rxon_timing(priv);
2461         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2462                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2463         if (ret)
2464                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2465                             "Attempting to continue.\n");
2466
2467         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2468
2469         if (priv->current_ht_config.is_ht)
2470                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
2471
2472         iwl_set_rxon_chain(priv);
2473         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2474
2475         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2476                         priv->assoc_id, priv->beacon_int);
2477
2478         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2479                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2480         else
2481                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2482
2483         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2484                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2485                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2486                 else
2487                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2488
2489                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2490                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2491
2492         }
2493
2494         iwl4965_commit_rxon(priv);
2495
2496         switch (priv->iw_mode) {
2497         case IEEE80211_IF_TYPE_STA:
2498                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
2499                 break;
2500
2501         case IEEE80211_IF_TYPE_IBSS:
2502
2503                 /* assume default assoc id */
2504                 priv->assoc_id = 1;
2505
2506                 iwl_rxon_add_station(priv, priv->bssid, 0);
2507                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
2508                 iwl4965_send_beacon_cmd(priv);
2509
2510                 break;
2511
2512         default:
2513                 IWL_ERROR("%s Should not be called in %d mode\n",
2514                                 __FUNCTION__, priv->iw_mode);
2515                 break;
2516         }
2517
2518         iwl4965_sequence_reset(priv);
2519
2520         /* Enable Rx differential gain and sensitivity calibrations */
2521         iwl_chain_noise_reset(priv);
2522         priv->start_calib = 1;
2523
2524         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2525                 priv->assoc_station_added = 1;
2526
2527         iwl4965_activate_qos(priv, 0);
2528
2529         iwl_power_update_mode(priv, 0);
2530         /* we have just associated, don't start scan too early */
2531         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
2532 }
2533
2534
2535 static void iwl4965_bg_post_associate(struct work_struct *data)
2536 {
2537         struct iwl_priv *priv = container_of(data, struct iwl_priv,
2538                                              post_associate.work);
2539
2540         mutex_lock(&priv->mutex);
2541         iwl4965_post_associate(priv);
2542         mutex_unlock(&priv->mutex);
2543
2544 }
2545
2546 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
2547
2548 static void iwl_bg_scan_completed(struct work_struct *work)
2549 {
2550         struct iwl_priv *priv =
2551             container_of(work, struct iwl_priv, scan_completed);
2552
2553         IWL_DEBUG_SCAN("SCAN complete scan\n");
2554
2555         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2556                 return;
2557
2558         if (test_bit(STATUS_CONF_PENDING, &priv->status))
2559                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
2560
2561         ieee80211_scan_completed(priv->hw);
2562
2563         /* Since setting the TXPOWER may have been deferred while
2564          * performing the scan, fire one off */
2565         mutex_lock(&priv->mutex);
2566         iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
2567         mutex_unlock(&priv->mutex);
2568 }
2569
2570 /*****************************************************************************
2571  *
2572  * mac80211 entry point functions
2573  *
2574  *****************************************************************************/
2575
2576 #define UCODE_READY_TIMEOUT     (2 * HZ)
2577
2578 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2579 {
2580         struct iwl_priv *priv = hw->priv;
2581         int ret;
2582
2583         IWL_DEBUG_MAC80211("enter\n");
2584
2585         if (pci_enable_device(priv->pci_dev)) {
2586                 IWL_ERROR("Fail to pci_enable_device\n");
2587                 return -ENODEV;
2588         }
2589         pci_restore_state(priv->pci_dev);
2590         pci_enable_msi(priv->pci_dev);
2591
2592         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2593                           DRV_NAME, priv);
2594         if (ret) {
2595                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2596                 goto out_disable_msi;
2597         }
2598
2599         /* we should be verifying the device is ready to be opened */
2600         mutex_lock(&priv->mutex);
2601
2602         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2603         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2604          * ucode filename and max sizes are card-specific. */
2605
2606         if (!priv->ucode_code.len) {
2607                 ret = iwl4965_read_ucode(priv);
2608                 if (ret) {
2609                         IWL_ERROR("Could not read microcode: %d\n", ret);
2610                         mutex_unlock(&priv->mutex);
2611                         goto out_release_irq;
2612                 }
2613         }
2614
2615         ret = __iwl4965_up(priv);
2616
2617         mutex_unlock(&priv->mutex);
2618
2619         if (ret)
2620                 goto out_release_irq;
2621
2622         IWL_DEBUG_INFO("Start UP work done.\n");
2623
2624         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2625                 return 0;
2626
2627         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2628          * mac80211 will not be run successfully. */
2629         if (priv->ucode_type == UCODE_RT) {
2630                 ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2631                                 test_bit(STATUS_READY, &priv->status),
2632                                 UCODE_READY_TIMEOUT);
2633                 if (!ret) {
2634                         if (!test_bit(STATUS_READY, &priv->status)) {
2635                                 IWL_ERROR("START_ALIVE timeout after %dms.\n",
2636                                         jiffies_to_msecs(UCODE_READY_TIMEOUT));
2637                                 ret = -ETIMEDOUT;
2638                                 goto out_release_irq;
2639                         }
2640                 }
2641
2642                 priv->is_open = 1;
2643         }
2644         IWL_DEBUG_MAC80211("leave\n");
2645         return 0;
2646
2647 out_release_irq:
2648         free_irq(priv->pci_dev->irq, priv);
2649 out_disable_msi:
2650         pci_disable_msi(priv->pci_dev);
2651         pci_disable_device(priv->pci_dev);
2652         priv->is_open = 0;
2653         IWL_DEBUG_MAC80211("leave - failed\n");
2654         return ret;
2655 }
2656
2657 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2658 {
2659         struct iwl_priv *priv = hw->priv;
2660
2661         IWL_DEBUG_MAC80211("enter\n");
2662
2663         if (!priv->is_open) {
2664                 IWL_DEBUG_MAC80211("leave - skip\n");
2665                 return;
2666         }
2667
2668         priv->is_open = 0;
2669
2670         if (iwl_is_ready_rf(priv)) {
2671                 /* stop mac, cancel any scan request and clear
2672                  * RXON_FILTER_ASSOC_MSK BIT
2673                  */
2674                 mutex_lock(&priv->mutex);
2675                 iwl_scan_cancel_timeout(priv, 100);
2676                 cancel_delayed_work(&priv->post_associate);
2677                 mutex_unlock(&priv->mutex);
2678         }
2679
2680         iwl4965_down(priv);
2681
2682         flush_workqueue(priv->workqueue);
2683         free_irq(priv->pci_dev->irq, priv);
2684         pci_disable_msi(priv->pci_dev);
2685         pci_save_state(priv->pci_dev);
2686         pci_disable_device(priv->pci_dev);
2687
2688         IWL_DEBUG_MAC80211("leave\n");
2689 }
2690
2691 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2692 {
2693         struct iwl_priv *priv = hw->priv;
2694
2695         IWL_DEBUG_MAC80211("enter\n");
2696
2697         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
2698                 IWL_DEBUG_MAC80211("leave - monitor\n");
2699                 return -1;
2700         }
2701
2702         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2703                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2704
2705         if (iwl_tx_skb(priv, skb))
2706                 dev_kfree_skb_any(skb);
2707
2708         IWL_DEBUG_MAC80211("leave\n");
2709         return 0;
2710 }
2711
2712 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2713                                  struct ieee80211_if_init_conf *conf)
2714 {
2715         struct iwl_priv *priv = hw->priv;
2716         unsigned long flags;
2717         DECLARE_MAC_BUF(mac);
2718
2719         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2720
2721         if (priv->vif) {
2722                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2723                 return -EOPNOTSUPP;
2724         }
2725
2726         spin_lock_irqsave(&priv->lock, flags);
2727         priv->vif = conf->vif;
2728
2729         spin_unlock_irqrestore(&priv->lock, flags);
2730
2731         mutex_lock(&priv->mutex);
2732
2733         if (conf->mac_addr) {
2734                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2735                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2736         }
2737
2738         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2739                 /* we are not ready, will run again when ready */
2740                 set_bit(STATUS_MODE_PENDING, &priv->status);
2741
2742         mutex_unlock(&priv->mutex);
2743
2744         IWL_DEBUG_MAC80211("leave\n");
2745         return 0;
2746 }
2747
2748 /**
2749  * iwl4965_mac_config - mac80211 config callback
2750  *
2751  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2752  * be set inappropriately and the driver currently sets the hardware up to
2753  * use it whenever needed.
2754  */
2755 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2756 {
2757         struct iwl_priv *priv = hw->priv;
2758         const struct iwl_channel_info *ch_info;
2759         unsigned long flags;
2760         int ret = 0;
2761         u16 channel;
2762
2763         mutex_lock(&priv->mutex);
2764         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2765
2766         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
2767
2768         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2769                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2770                 goto out;
2771         }
2772
2773         if (!conf->radio_enabled)
2774                 iwl_radio_kill_sw_disable_radio(priv);
2775
2776         if (!iwl_is_ready(priv)) {
2777                 IWL_DEBUG_MAC80211("leave - not ready\n");
2778                 ret = -EIO;
2779                 goto out;
2780         }
2781
2782         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2783                      test_bit(STATUS_SCANNING, &priv->status))) {
2784                 IWL_DEBUG_MAC80211("leave - scanning\n");
2785                 set_bit(STATUS_CONF_PENDING, &priv->status);
2786                 mutex_unlock(&priv->mutex);
2787                 return 0;
2788         }
2789
2790         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2791         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2792         if (!is_channel_valid(ch_info)) {
2793                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2794                 ret = -EINVAL;
2795                 goto out;
2796         }
2797
2798         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS &&
2799             !is_channel_ibss(ch_info)) {
2800                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2801                         conf->channel->hw_value, conf->channel->band);
2802                 ret = -EINVAL;
2803                 goto out;
2804         }
2805
2806         spin_lock_irqsave(&priv->lock, flags);
2807
2808         /* if we are switching from ht to 2.4 clear flags
2809          * from any ht related info since 2.4 does not
2810          * support ht */
2811         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2812 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2813             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2814 #endif
2815         )
2816                 priv->staging_rxon.flags = 0;
2817
2818         iwl_set_rxon_channel(priv, conf->channel->band, channel);
2819
2820         iwl_set_flags_for_band(priv, conf->channel->band);
2821
2822         /* The list of supported rates and rate mask can be different
2823          * for each band; since the band may have changed, reset
2824          * the rate mask to what mac80211 lists */
2825         iwl4965_set_rate(priv);
2826
2827         spin_unlock_irqrestore(&priv->lock, flags);
2828
2829 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2830         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2831                 iwl4965_hw_channel_switch(priv, conf->channel);
2832                 goto out;
2833         }
2834 #endif
2835
2836         if (!conf->radio_enabled) {
2837                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2838                 goto out;
2839         }
2840
2841         if (iwl_is_rfkill(priv)) {
2842                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2843                 ret = -EIO;
2844                 goto out;
2845         }
2846
2847         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2848                            priv->tx_power_user_lmt, conf->power_level);
2849
2850         iwl_set_tx_power(priv, conf->power_level, false);
2851
2852         iwl4965_set_rate(priv);
2853
2854         if (memcmp(&priv->active_rxon,
2855                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2856                 iwl4965_commit_rxon(priv);
2857         else
2858                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2859
2860         IWL_DEBUG_MAC80211("leave\n");
2861
2862 out:
2863         clear_bit(STATUS_CONF_PENDING, &priv->status);
2864         mutex_unlock(&priv->mutex);
2865         return ret;
2866 }
2867
2868 static void iwl4965_config_ap(struct iwl_priv *priv)
2869 {
2870         int ret = 0;
2871
2872         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2873                 return;
2874
2875         /* The following should be done only at AP bring up */
2876         if (!(iwl_is_associated(priv))) {
2877
2878                 /* RXON - unassoc (to set timing command) */
2879                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2880                 iwl4965_commit_rxon(priv);
2881
2882                 /* RXON Timing */
2883                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2884                 iwl4965_setup_rxon_timing(priv);
2885                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2886                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2887                 if (ret)
2888                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2889                                         "Attempting to continue.\n");
2890
2891                 iwl_set_rxon_chain(priv);
2892
2893                 /* FIXME: what should be the assoc_id for AP? */
2894                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2895                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2896                         priv->staging_rxon.flags |=
2897                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2898                 else
2899                         priv->staging_rxon.flags &=
2900                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2901
2902                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2903                         if (priv->assoc_capability &
2904                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2905                                 priv->staging_rxon.flags |=
2906                                         RXON_FLG_SHORT_SLOT_MSK;
2907                         else
2908                                 priv->staging_rxon.flags &=
2909                                         ~RXON_FLG_SHORT_SLOT_MSK;
2910
2911                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
2912                                 priv->staging_rxon.flags &=
2913                                         ~RXON_FLG_SHORT_SLOT_MSK;
2914                 }
2915                 /* restore RXON assoc */
2916                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2917                 iwl4965_commit_rxon(priv);
2918                 iwl4965_activate_qos(priv, 1);
2919                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2920         }
2921         iwl4965_send_beacon_cmd(priv);
2922
2923         /* FIXME - we need to add code here to detect a totally new
2924          * configuration, reset the AP, unassoc, rxon timing, assoc,
2925          * clear sta table, add BCAST sta... */
2926 }
2927
2928 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2929                                         struct ieee80211_vif *vif,
2930                                     struct ieee80211_if_conf *conf)
2931 {
2932         struct iwl_priv *priv = hw->priv;
2933         DECLARE_MAC_BUF(mac);
2934         unsigned long flags;
2935         int rc;
2936
2937         if (conf == NULL)
2938                 return -EIO;
2939
2940         if (priv->vif != vif) {
2941                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2942                 return 0;
2943         }
2944
2945         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2946             (!conf->beacon || !conf->ssid_len)) {
2947                 IWL_DEBUG_MAC80211
2948                     ("Leaving in AP mode because HostAPD is not ready.\n");
2949                 return 0;
2950         }
2951
2952         if (!iwl_is_alive(priv))
2953                 return -EAGAIN;
2954
2955         mutex_lock(&priv->mutex);
2956
2957         if (conf->bssid)
2958                 IWL_DEBUG_MAC80211("bssid: %s\n",
2959                                    print_mac(mac, conf->bssid));
2960
2961 /*
2962  * very dubious code was here; the probe filtering flag is never set:
2963  *
2964         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2965             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2966  */
2967
2968         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
2969                 if (!conf->bssid) {
2970                         conf->bssid = priv->mac_addr;
2971                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
2972                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
2973                                            print_mac(mac, conf->bssid));
2974                 }
2975                 if (priv->ibss_beacon)
2976                         dev_kfree_skb(priv->ibss_beacon);
2977
2978                 priv->ibss_beacon = conf->beacon;
2979         }
2980
2981         if (iwl_is_rfkill(priv))
2982                 goto done;
2983
2984         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
2985             !is_multicast_ether_addr(conf->bssid)) {
2986                 /* If there is currently a HW scan going on in the background
2987                  * then we need to cancel it else the RXON below will fail. */
2988                 if (iwl_scan_cancel_timeout(priv, 100)) {
2989                         IWL_WARNING("Aborted scan still in progress "
2990                                     "after 100ms\n");
2991                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
2992                         mutex_unlock(&priv->mutex);
2993                         return -EAGAIN;
2994                 }
2995                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
2996
2997                 /* TODO: Audit driver for usage of these members and see
2998                  * if mac80211 deprecates them (priv->bssid looks like it
2999                  * shouldn't be there, but I haven't scanned the IBSS code
3000                  * to verify) - jpk */
3001                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3002
3003                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3004                         iwl4965_config_ap(priv);
3005                 else {
3006                         rc = iwl4965_commit_rxon(priv);
3007                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
3008                                 iwl_rxon_add_station(
3009                                         priv, priv->active_rxon.bssid_addr, 1);
3010                 }
3011
3012         } else {
3013                 iwl_scan_cancel_timeout(priv, 100);
3014                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3015                 iwl4965_commit_rxon(priv);
3016         }
3017
3018  done:
3019         spin_lock_irqsave(&priv->lock, flags);
3020         if (!conf->ssid_len)
3021                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3022         else
3023                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3024
3025         priv->essid_len = conf->ssid_len;
3026         spin_unlock_irqrestore(&priv->lock, flags);
3027
3028         IWL_DEBUG_MAC80211("leave\n");
3029         mutex_unlock(&priv->mutex);
3030
3031         return 0;
3032 }
3033
3034 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3035                                  unsigned int changed_flags,
3036                                  unsigned int *total_flags,
3037                                  int mc_count, struct dev_addr_list *mc_list)
3038 {
3039         /*
3040          * XXX: dummy
3041          * see also iwl4965_connection_init_rx_config
3042          */
3043         struct iwl_priv *priv = hw->priv;
3044         int new_flags = 0;
3045         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3046                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
3047                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3048                                            IEEE80211_IF_TYPE_MNTR,
3049                                            changed_flags, *total_flags);
3050                         /* queue work 'cuz mac80211 is holding a lock which
3051                          * prevents us from issuing (synchronous) f/w cmds */
3052                         queue_work(priv->workqueue, &priv->set_monitor);
3053                         new_flags &= FIF_PROMISC_IN_BSS |
3054                                      FIF_OTHER_BSS |
3055                                      FIF_ALLMULTI;
3056                 }
3057         }
3058         *total_flags = new_flags;
3059 }
3060
3061 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3062                                      struct ieee80211_if_init_conf *conf)
3063 {
3064         struct iwl_priv *priv = hw->priv;
3065
3066         IWL_DEBUG_MAC80211("enter\n");
3067
3068         mutex_lock(&priv->mutex);
3069
3070         if (iwl_is_ready_rf(priv)) {
3071                 iwl_scan_cancel_timeout(priv, 100);
3072                 cancel_delayed_work(&priv->post_associate);
3073                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3074                 iwl4965_commit_rxon(priv);
3075         }
3076         if (priv->vif == conf->vif) {
3077                 priv->vif = NULL;
3078                 memset(priv->bssid, 0, ETH_ALEN);
3079                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3080                 priv->essid_len = 0;
3081         }
3082         mutex_unlock(&priv->mutex);
3083
3084         IWL_DEBUG_MAC80211("leave\n");
3085
3086 }
3087
3088 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3089 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3090                                      struct ieee80211_vif *vif,
3091                                      struct ieee80211_bss_conf *bss_conf,
3092                                      u32 changes)
3093 {
3094         struct iwl_priv *priv = hw->priv;
3095
3096         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3097
3098         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3099                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3100                                    bss_conf->use_short_preamble);
3101                 if (bss_conf->use_short_preamble)
3102                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3103                 else
3104                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3105         }
3106
3107         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3108                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3109                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3110                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3111                 else
3112                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3113         }
3114
3115         if (changes & BSS_CHANGED_HT) {
3116                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3117                 iwl4965_ht_conf(priv, bss_conf);
3118                 iwl_set_rxon_chain(priv);
3119         }
3120
3121         if (changes & BSS_CHANGED_ASSOC) {
3122                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3123                 /* This should never happen as this function should
3124                  * never be called from interrupt context. */
3125                 if (WARN_ON_ONCE(in_interrupt()))
3126                         return;
3127                 if (bss_conf->assoc) {
3128                         priv->assoc_id = bss_conf->aid;
3129                         priv->beacon_int = bss_conf->beacon_int;
3130                         priv->timestamp = bss_conf->timestamp;
3131                         priv->assoc_capability = bss_conf->assoc_capability;
3132                         priv->next_scan_jiffies = jiffies +
3133                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3134                         mutex_lock(&priv->mutex);
3135                         iwl4965_post_associate(priv);
3136                         mutex_unlock(&priv->mutex);
3137                 } else {
3138                         priv->assoc_id = 0;
3139                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3140                 }
3141         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3142                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3143                         iwl_send_rxon_assoc(priv);
3144         }
3145
3146 }
3147
3148 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
3149 {
3150         int rc = 0;
3151         unsigned long flags;
3152         struct iwl_priv *priv = hw->priv;
3153
3154         IWL_DEBUG_MAC80211("enter\n");
3155
3156         mutex_lock(&priv->mutex);
3157         spin_lock_irqsave(&priv->lock, flags);
3158
3159         if (!iwl_is_ready_rf(priv)) {
3160                 rc = -EIO;
3161                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3162                 goto out_unlock;
3163         }
3164
3165         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
3166                 rc = -EIO;
3167                 IWL_ERROR("ERROR: APs don't scan\n");
3168                 goto out_unlock;
3169         }
3170
3171         /* we don't schedule scan within next_scan_jiffies period */
3172         if (priv->next_scan_jiffies &&
3173                         time_after(priv->next_scan_jiffies, jiffies)) {
3174                 rc = -EAGAIN;
3175                 goto out_unlock;
3176         }
3177         /* if we just finished scan ask for delay */
3178         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
3179                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
3180                 rc = -EAGAIN;
3181                 goto out_unlock;
3182         }
3183         if (len) {
3184                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
3185                                iwl_escape_essid(ssid, len), (int)len);
3186
3187                 priv->one_direct_scan = 1;
3188                 priv->direct_ssid_len = (u8)
3189                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
3190                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3191         } else
3192                 priv->one_direct_scan = 0;
3193
3194         rc = iwl_scan_initiate(priv);
3195
3196         IWL_DEBUG_MAC80211("leave\n");
3197
3198 out_unlock:
3199         spin_unlock_irqrestore(&priv->lock, flags);
3200         mutex_unlock(&priv->mutex);
3201
3202         return rc;
3203 }
3204
3205 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3206                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3207                         u32 iv32, u16 *phase1key)
3208 {
3209         struct iwl_priv *priv = hw->priv;
3210         u8 sta_id = IWL_INVALID_STATION;
3211         unsigned long flags;
3212         __le16 key_flags = 0;
3213         int i;
3214         DECLARE_MAC_BUF(mac);
3215
3216         IWL_DEBUG_MAC80211("enter\n");
3217
3218         sta_id = iwl_find_station(priv, addr);
3219         if (sta_id == IWL_INVALID_STATION) {
3220                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3221                                    print_mac(mac, addr));
3222                 return;
3223         }
3224
3225         iwl_scan_cancel_timeout(priv, 100);
3226
3227         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3228         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3229         key_flags &= ~STA_KEY_FLG_INVALID;
3230
3231         if (sta_id == priv->hw_params.bcast_sta_id)
3232                 key_flags |= STA_KEY_MULTICAST_MSK;
3233
3234         spin_lock_irqsave(&priv->sta_lock, flags);
3235
3236         priv->stations[sta_id].sta.key.key_flags = key_flags;
3237         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3238
3239         for (i = 0; i < 5; i++)
3240                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3241                         cpu_to_le16(phase1key[i]);
3242
3243         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3244         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3245
3246         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3247
3248         spin_unlock_irqrestore(&priv->sta_lock, flags);
3249
3250         IWL_DEBUG_MAC80211("leave\n");
3251 }
3252
3253 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3254                            const u8 *local_addr, const u8 *addr,
3255                            struct ieee80211_key_conf *key)
3256 {
3257         struct iwl_priv *priv = hw->priv;
3258         DECLARE_MAC_BUF(mac);
3259         int ret = 0;
3260         u8 sta_id = IWL_INVALID_STATION;
3261         u8 is_default_wep_key = 0;
3262
3263         IWL_DEBUG_MAC80211("enter\n");
3264
3265         if (priv->hw_params.sw_crypto) {
3266                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3267                 return -EOPNOTSUPP;
3268         }
3269
3270         if (is_zero_ether_addr(addr))
3271                 /* only support pairwise keys */
3272                 return -EOPNOTSUPP;
3273
3274         sta_id = iwl_find_station(priv, addr);
3275         if (sta_id == IWL_INVALID_STATION) {
3276                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3277                                    print_mac(mac, addr));
3278                 return -EINVAL;
3279
3280         }
3281
3282         mutex_lock(&priv->mutex);
3283         iwl_scan_cancel_timeout(priv, 100);
3284         mutex_unlock(&priv->mutex);
3285
3286         /* If we are getting WEP group key and we didn't receive any key mapping
3287          * so far, we are in legacy wep mode (group key only), otherwise we are
3288          * in 1X mode.
3289          * In legacy wep mode, we use another host command to the uCode */
3290         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3291                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3292                 if (cmd == SET_KEY)
3293                         is_default_wep_key = !priv->key_mapping_key;
3294                 else
3295                         is_default_wep_key =
3296                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3297         }
3298
3299         switch (cmd) {
3300         case SET_KEY:
3301                 if (is_default_wep_key)
3302                         ret = iwl_set_default_wep_key(priv, key);
3303                 else
3304                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3305
3306                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3307                 break;
3308         case DISABLE_KEY:
3309                 if (is_default_wep_key)
3310                         ret = iwl_remove_default_wep_key(priv, key);
3311                 else
3312                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3313
3314                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3315                 break;
3316         default:
3317                 ret = -EINVAL;
3318         }
3319
3320         IWL_DEBUG_MAC80211("leave\n");
3321
3322         return ret;
3323 }
3324
3325 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3326                            const struct ieee80211_tx_queue_params *params)
3327 {
3328         struct iwl_priv *priv = hw->priv;
3329         unsigned long flags;
3330         int q;
3331
3332         IWL_DEBUG_MAC80211("enter\n");
3333
3334         if (!iwl_is_ready_rf(priv)) {
3335                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3336                 return -EIO;
3337         }
3338
3339         if (queue >= AC_NUM) {
3340                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3341                 return 0;
3342         }
3343
3344         if (!priv->qos_data.qos_enable) {
3345                 priv->qos_data.qos_active = 0;
3346                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3347                 return 0;
3348         }
3349         q = AC_NUM - 1 - queue;
3350
3351         spin_lock_irqsave(&priv->lock, flags);
3352
3353         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3354         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3355         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3356         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3357                         cpu_to_le16((params->txop * 32));
3358
3359         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3360         priv->qos_data.qos_active = 1;
3361
3362         spin_unlock_irqrestore(&priv->lock, flags);
3363
3364         mutex_lock(&priv->mutex);
3365         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
3366                 iwl4965_activate_qos(priv, 1);
3367         else if (priv->assoc_id && iwl_is_associated(priv))
3368                 iwl4965_activate_qos(priv, 0);
3369
3370         mutex_unlock(&priv->mutex);
3371
3372         IWL_DEBUG_MAC80211("leave\n");
3373         return 0;
3374 }
3375
3376 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3377                                 struct ieee80211_tx_queue_stats *stats)
3378 {
3379         struct iwl_priv *priv = hw->priv;
3380         int i, avail;
3381         struct iwl_tx_queue *txq;
3382         struct iwl_queue *q;
3383         unsigned long flags;
3384
3385         IWL_DEBUG_MAC80211("enter\n");
3386
3387         if (!iwl_is_ready_rf(priv)) {
3388                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3389                 return -EIO;
3390         }
3391
3392         spin_lock_irqsave(&priv->lock, flags);
3393
3394         for (i = 0; i < AC_NUM; i++) {
3395                 txq = &priv->txq[i];
3396                 q = &txq->q;
3397                 avail = iwl_queue_space(q);
3398
3399                 stats[i].len = q->n_window - avail;
3400                 stats[i].limit = q->n_window - q->high_mark;
3401                 stats[i].count = q->n_window;
3402
3403         }
3404         spin_unlock_irqrestore(&priv->lock, flags);
3405
3406         IWL_DEBUG_MAC80211("leave\n");
3407
3408         return 0;
3409 }
3410
3411 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3412                              struct ieee80211_low_level_stats *stats)
3413 {
3414         struct iwl_priv *priv = hw->priv;
3415
3416         priv = hw->priv;
3417         IWL_DEBUG_MAC80211("enter\n");
3418         IWL_DEBUG_MAC80211("leave\n");
3419
3420         return 0;
3421 }
3422
3423 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
3424 {
3425         struct iwl_priv *priv;
3426
3427         priv = hw->priv;
3428         IWL_DEBUG_MAC80211("enter\n");
3429         IWL_DEBUG_MAC80211("leave\n");
3430
3431         return 0;
3432 }
3433
3434 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3435 {
3436         struct iwl_priv *priv = hw->priv;
3437         unsigned long flags;
3438
3439         mutex_lock(&priv->mutex);
3440         IWL_DEBUG_MAC80211("enter\n");
3441
3442         priv->lq_mngr.lq_ready = 0;
3443         spin_lock_irqsave(&priv->lock, flags);
3444         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3445         spin_unlock_irqrestore(&priv->lock, flags);
3446
3447         iwl_reset_qos(priv);
3448
3449         cancel_delayed_work(&priv->post_associate);
3450
3451         spin_lock_irqsave(&priv->lock, flags);
3452         priv->assoc_id = 0;
3453         priv->assoc_capability = 0;
3454         priv->assoc_station_added = 0;
3455
3456         /* new association get rid of ibss beacon skb */
3457         if (priv->ibss_beacon)
3458                 dev_kfree_skb(priv->ibss_beacon);
3459
3460         priv->ibss_beacon = NULL;
3461
3462         priv->beacon_int = priv->hw->conf.beacon_int;
3463         priv->timestamp = 0;
3464         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
3465                 priv->beacon_int = 0;
3466
3467         spin_unlock_irqrestore(&priv->lock, flags);
3468
3469         if (!iwl_is_ready_rf(priv)) {
3470                 IWL_DEBUG_MAC80211("leave - not ready\n");
3471                 mutex_unlock(&priv->mutex);
3472                 return;
3473         }
3474
3475         /* we are restarting association process
3476          * clear RXON_FILTER_ASSOC_MSK bit
3477          */
3478         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
3479                 iwl_scan_cancel_timeout(priv, 100);
3480                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3481                 iwl4965_commit_rxon(priv);
3482         }
3483
3484         iwl_power_update_mode(priv, 0);
3485
3486         /* Per mac80211.h: This is only used in IBSS mode... */
3487         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3488
3489                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3490                 mutex_unlock(&priv->mutex);
3491                 return;
3492         }
3493
3494         iwl4965_set_rate(priv);
3495
3496         mutex_unlock(&priv->mutex);
3497
3498         IWL_DEBUG_MAC80211("leave\n");
3499 }
3500
3501 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3502 {
3503         struct iwl_priv *priv = hw->priv;
3504         unsigned long flags;
3505
3506         mutex_lock(&priv->mutex);
3507         IWL_DEBUG_MAC80211("enter\n");
3508
3509         if (!iwl_is_ready_rf(priv)) {
3510                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3511                 mutex_unlock(&priv->mutex);
3512                 return -EIO;
3513         }
3514
3515         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
3516                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3517                 mutex_unlock(&priv->mutex);
3518                 return -EIO;
3519         }
3520
3521         spin_lock_irqsave(&priv->lock, flags);
3522
3523         if (priv->ibss_beacon)
3524                 dev_kfree_skb(priv->ibss_beacon);
3525
3526         priv->ibss_beacon = skb;
3527
3528         priv->assoc_id = 0;
3529
3530         IWL_DEBUG_MAC80211("leave\n");
3531         spin_unlock_irqrestore(&priv->lock, flags);
3532
3533         iwl_reset_qos(priv);
3534
3535         iwl4965_post_associate(priv);
3536
3537         mutex_unlock(&priv->mutex);
3538
3539         return 0;
3540 }
3541
3542 /*****************************************************************************
3543  *
3544  * sysfs attributes
3545  *
3546  *****************************************************************************/
3547
3548 #ifdef CONFIG_IWLWIFI_DEBUG
3549
3550 /*
3551  * The following adds a new attribute to the sysfs representation
3552  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3553  * used for controlling the debug level.
3554  *
3555  * See the level definitions in iwl for details.
3556  */
3557
3558 static ssize_t show_debug_level(struct device *d,
3559                                 struct device_attribute *attr, char *buf)
3560 {
3561         struct iwl_priv *priv = d->driver_data;
3562
3563         return sprintf(buf, "0x%08X\n", priv->debug_level);
3564 }
3565 static ssize_t store_debug_level(struct device *d,
3566                                 struct device_attribute *attr,
3567                                  const char *buf, size_t count)
3568 {
3569         struct iwl_priv *priv = d->driver_data;
3570         char *p = (char *)buf;
3571         u32 val;
3572
3573         val = simple_strtoul(p, &p, 0);
3574         if (p == buf)
3575                 printk(KERN_INFO DRV_NAME
3576                        ": %s is not in hex or decimal form.\n", buf);
3577         else
3578                 priv->debug_level = val;
3579
3580         return strnlen(buf, count);
3581 }
3582
3583 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3584                         show_debug_level, store_debug_level);
3585
3586
3587 #endif /* CONFIG_IWLWIFI_DEBUG */
3588
3589
3590 static ssize_t show_version(struct device *d,
3591                                 struct device_attribute *attr, char *buf)
3592 {
3593         struct iwl_priv *priv = d->driver_data;
3594         struct iwl_alive_resp *palive = &priv->card_alive;
3595         ssize_t pos = 0;
3596         u16 eeprom_ver;
3597
3598         if (palive->is_valid)
3599                 pos += sprintf(buf + pos,
3600                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3601                                 "fw type: 0x%01X 0x%01X\n",
3602                                 palive->ucode_major, palive->ucode_minor,
3603                                 palive->sw_rev[0], palive->sw_rev[1],
3604                                 palive->ver_type, palive->ver_subtype);
3605         else
3606                 pos += sprintf(buf + pos, "fw not loaded\n");
3607
3608         if (priv->eeprom) {
3609                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3610                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3611                                  eeprom_ver);
3612         } else {
3613                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3614         }
3615
3616         return pos;
3617 }
3618
3619 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3620
3621 static ssize_t show_temperature(struct device *d,
3622                                 struct device_attribute *attr, char *buf)
3623 {
3624         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3625
3626         if (!iwl_is_alive(priv))
3627                 return -EAGAIN;
3628
3629         return sprintf(buf, "%d\n", priv->temperature);
3630 }
3631
3632 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3633
3634 static ssize_t show_rs_window(struct device *d,
3635                               struct device_attribute *attr,
3636                               char *buf)
3637 {
3638         struct iwl_priv *priv = d->driver_data;
3639         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
3640 }
3641 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
3642
3643 static ssize_t show_tx_power(struct device *d,
3644                              struct device_attribute *attr, char *buf)
3645 {
3646         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3647         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3648 }
3649
3650 static ssize_t store_tx_power(struct device *d,
3651                               struct device_attribute *attr,
3652                               const char *buf, size_t count)
3653 {
3654         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3655         char *p = (char *)buf;
3656         u32 val;
3657
3658         val = simple_strtoul(p, &p, 10);
3659         if (p == buf)
3660                 printk(KERN_INFO DRV_NAME
3661                        ": %s is not in decimal form.\n", buf);
3662         else
3663                 iwl_set_tx_power(priv, val, false);
3664
3665         return count;
3666 }
3667
3668 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3669
3670 static ssize_t show_flags(struct device *d,
3671                           struct device_attribute *attr, char *buf)
3672 {
3673         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3674
3675         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3676 }
3677
3678 static ssize_t store_flags(struct device *d,
3679                            struct device_attribute *attr,
3680                            const char *buf, size_t count)
3681 {
3682         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3683         u32 flags = simple_strtoul(buf, NULL, 0);
3684
3685         mutex_lock(&priv->mutex);
3686         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3687                 /* Cancel any currently running scans... */
3688                 if (iwl_scan_cancel_timeout(priv, 100))
3689                         IWL_WARNING("Could not cancel scan.\n");
3690                 else {
3691                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
3692                                        flags);
3693                         priv->staging_rxon.flags = cpu_to_le32(flags);
3694                         iwl4965_commit_rxon(priv);
3695                 }
3696         }
3697         mutex_unlock(&priv->mutex);
3698
3699         return count;
3700 }
3701
3702 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3703
3704 static ssize_t show_filter_flags(struct device *d,
3705                                  struct device_attribute *attr, char *buf)
3706 {
3707         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3708
3709         return sprintf(buf, "0x%04X\n",
3710                 le32_to_cpu(priv->active_rxon.filter_flags));
3711 }
3712
3713 static ssize_t store_filter_flags(struct device *d,
3714                                   struct device_attribute *attr,
3715                                   const char *buf, size_t count)
3716 {
3717         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3718         u32 filter_flags = simple_strtoul(buf, NULL, 0);
3719
3720         mutex_lock(&priv->mutex);
3721         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3722                 /* Cancel any currently running scans... */
3723                 if (iwl_scan_cancel_timeout(priv, 100))
3724                         IWL_WARNING("Could not cancel scan.\n");
3725                 else {
3726                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3727                                        "0x%04X\n", filter_flags);
3728                         priv->staging_rxon.filter_flags =
3729                                 cpu_to_le32(filter_flags);
3730                         iwl4965_commit_rxon(priv);
3731                 }
3732         }
3733         mutex_unlock(&priv->mutex);
3734
3735         return count;
3736 }
3737
3738 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3739                    store_filter_flags);
3740
3741 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
3742
3743 static ssize_t show_measurement(struct device *d,
3744                                 struct device_attribute *attr, char *buf)
3745 {
3746         struct iwl_priv *priv = dev_get_drvdata(d);
3747         struct iwl4965_spectrum_notification measure_report;
3748         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3749         u8 *data = (u8 *) & measure_report;
3750         unsigned long flags;
3751
3752         spin_lock_irqsave(&priv->lock, flags);
3753         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3754                 spin_unlock_irqrestore(&priv->lock, flags);
3755                 return 0;
3756         }
3757         memcpy(&measure_report, &priv->measure_report, size);
3758         priv->measurement_status = 0;
3759         spin_unlock_irqrestore(&priv->lock, flags);
3760
3761         while (size && (PAGE_SIZE - len)) {
3762                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3763                                    PAGE_SIZE - len, 1);
3764                 len = strlen(buf);
3765                 if (PAGE_SIZE - len)
3766                         buf[len++] = '\n';
3767
3768                 ofs += 16;
3769                 size -= min(size, 16U);
3770         }
3771
3772         return len;
3773 }
3774
3775 static ssize_t store_measurement(struct device *d,
3776                                  struct device_attribute *attr,
3777                                  const char *buf, size_t count)
3778 {
3779         struct iwl_priv *priv = dev_get_drvdata(d);
3780         struct ieee80211_measurement_params params = {
3781                 .channel = le16_to_cpu(priv->active_rxon.channel),
3782                 .start_time = cpu_to_le64(priv->last_tsf),
3783                 .duration = cpu_to_le16(1),
3784         };
3785         u8 type = IWL_MEASURE_BASIC;
3786         u8 buffer[32];
3787         u8 channel;
3788
3789         if (count) {
3790                 char *p = buffer;
3791                 strncpy(buffer, buf, min(sizeof(buffer), count));
3792                 channel = simple_strtoul(p, NULL, 0);
3793                 if (channel)
3794                         params.channel = channel;
3795
3796                 p = buffer;
3797                 while (*p && *p != ' ')
3798                         p++;
3799                 if (*p)
3800                         type = simple_strtoul(p + 1, NULL, 0);
3801         }
3802
3803         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3804                        "channel %d (for '%s')\n", type, params.channel, buf);
3805         iwl4965_get_measurement(priv, &params, type);
3806
3807         return count;
3808 }
3809
3810 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3811                    show_measurement, store_measurement);
3812 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
3813
3814 static ssize_t store_retry_rate(struct device *d,
3815                                 struct device_attribute *attr,
3816                                 const char *buf, size_t count)
3817 {
3818         struct iwl_priv *priv = dev_get_drvdata(d);
3819
3820         priv->retry_rate = simple_strtoul(buf, NULL, 0);
3821         if (priv->retry_rate <= 0)
3822                 priv->retry_rate = 1;
3823
3824         return count;
3825 }
3826
3827 static ssize_t show_retry_rate(struct device *d,
3828                                struct device_attribute *attr, char *buf)
3829 {
3830         struct iwl_priv *priv = dev_get_drvdata(d);
3831         return sprintf(buf, "%d", priv->retry_rate);
3832 }
3833
3834 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3835                    store_retry_rate);
3836
3837 static ssize_t store_power_level(struct device *d,
3838                                  struct device_attribute *attr,
3839                                  const char *buf, size_t count)
3840 {
3841         struct iwl_priv *priv = dev_get_drvdata(d);
3842         int rc;
3843         int mode;
3844
3845         mode = simple_strtoul(buf, NULL, 0);
3846         mutex_lock(&priv->mutex);
3847
3848         if (!iwl_is_ready(priv)) {
3849                 rc = -EAGAIN;
3850                 goto out;
3851         }
3852
3853         rc = iwl_power_set_user_mode(priv, mode);
3854         if (rc) {
3855                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3856                 goto out;
3857         }
3858         rc = count;
3859
3860  out:
3861         mutex_unlock(&priv->mutex);
3862         return rc;
3863 }
3864
3865 #define MAX_WX_STRING 80
3866
3867 /* Values are in microsecond */
3868 static const s32 timeout_duration[] = {
3869         350000,
3870         250000,
3871         75000,
3872         37000,
3873         25000,
3874 };
3875 static const s32 period_duration[] = {
3876         400000,
3877         700000,
3878         1000000,
3879         1000000,
3880         1000000
3881 };
3882
3883 static ssize_t show_power_level(struct device *d,
3884                                 struct device_attribute *attr, char *buf)
3885 {
3886         struct iwl_priv *priv = dev_get_drvdata(d);
3887         int level = priv->power_data.power_mode;
3888         char *p = buf;
3889
3890         p += sprintf(p, "%d ", level);
3891         switch (level) {
3892         case IWL_POWER_MODE_CAM:
3893         case IWL_POWER_AC:
3894                 p += sprintf(p, "(AC)");
3895                 break;
3896         case IWL_POWER_BATTERY:
3897                 p += sprintf(p, "(BATTERY)");
3898                 break;
3899         default:
3900                 p += sprintf(p,
3901                              "(Timeout %dms, Period %dms)",
3902                              timeout_duration[level - 1] / 1000,
3903                              period_duration[level - 1] / 1000);
3904         }
3905 /*
3906         if (!(priv->power_mode & IWL_POWER_ENABLED))
3907                 p += sprintf(p, " OFF\n");
3908         else
3909                 p += sprintf(p, " \n");
3910 */
3911         p += sprintf(p, " \n");
3912         return (p - buf + 1);
3913 }
3914
3915 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3916                    store_power_level);
3917
3918 static ssize_t show_channels(struct device *d,
3919                              struct device_attribute *attr, char *buf)
3920 {
3921
3922         struct iwl_priv *priv = dev_get_drvdata(d);
3923         struct ieee80211_channel *channels = NULL;
3924         const struct ieee80211_supported_band *supp_band = NULL;
3925         int len = 0, i;
3926         int count = 0;
3927
3928         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3929                 return -EAGAIN;
3930
3931         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3932         channels = supp_band->channels;
3933         count = supp_band->n_channels;
3934
3935         len += sprintf(&buf[len],
3936                         "Displaying %d channels in 2.4GHz band "
3937                         "(802.11bg):\n", count);
3938
3939         for (i = 0; i < count; i++)
3940                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3941                                 ieee80211_frequency_to_channel(
3942                                 channels[i].center_freq),
3943                                 channels[i].max_power,
3944                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3945                                 " (IEEE 802.11h required)" : "",
3946                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3947                                 || (channels[i].flags &
3948                                 IEEE80211_CHAN_RADAR)) ? "" :
3949                                 ", IBSS",
3950                                 channels[i].flags &
3951                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3952                                 "passive only" : "active/passive");
3953
3954         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
3955         channels = supp_band->channels;
3956         count = supp_band->n_channels;
3957
3958         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
3959                         "(802.11a):\n", count);
3960
3961         for (i = 0; i < count; i++)
3962                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3963                                 ieee80211_frequency_to_channel(
3964                                 channels[i].center_freq),
3965                                 channels[i].max_power,
3966                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3967                                 " (IEEE 802.11h required)" : "",
3968                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3969                                 || (channels[i].flags &
3970                                 IEEE80211_CHAN_RADAR)) ? "" :
3971                                 ", IBSS",
3972                                 channels[i].flags &
3973                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3974                                 "passive only" : "active/passive");
3975
3976         return len;
3977 }
3978
3979 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
3980
3981 static ssize_t show_statistics(struct device *d,
3982                                struct device_attribute *attr, char *buf)
3983 {
3984         struct iwl_priv *priv = dev_get_drvdata(d);
3985         u32 size = sizeof(struct iwl_notif_statistics);
3986         u32 len = 0, ofs = 0;
3987         u8 *data = (u8 *) & priv->statistics;
3988         int rc = 0;
3989
3990         if (!iwl_is_alive(priv))
3991                 return -EAGAIN;
3992
3993         mutex_lock(&priv->mutex);
3994         rc = iwl_send_statistics_request(priv, 0);
3995         mutex_unlock(&priv->mutex);
3996
3997         if (rc) {
3998                 len = sprintf(buf,
3999                               "Error sending statistics request: 0x%08X\n", rc);
4000                 return len;
4001         }
4002
4003         while (size && (PAGE_SIZE - len)) {
4004                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4005                                    PAGE_SIZE - len, 1);
4006                 len = strlen(buf);
4007                 if (PAGE_SIZE - len)
4008                         buf[len++] = '\n';
4009
4010                 ofs += 16;
4011                 size -= min(size, 16U);
4012         }
4013
4014         return len;
4015 }
4016
4017 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4018
4019 static ssize_t show_status(struct device *d,
4020                            struct device_attribute *attr, char *buf)
4021 {
4022         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4023         if (!iwl_is_alive(priv))
4024                 return -EAGAIN;
4025         return sprintf(buf, "0x%08x\n", (int)priv->status);
4026 }
4027
4028 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4029
4030 /*****************************************************************************
4031  *
4032  * driver setup and teardown
4033  *
4034  *****************************************************************************/
4035
4036 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4037 {
4038         priv->workqueue = create_workqueue(DRV_NAME);
4039
4040         init_waitqueue_head(&priv->wait_command_queue);
4041
4042         INIT_WORK(&priv->up, iwl4965_bg_up);
4043         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4044         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4045         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4046         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4047         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4048         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4049         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
4050         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4051         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4052
4053         /* FIXME : remove when resolved PENDING */
4054         INIT_WORK(&priv->scan_completed, iwl_bg_scan_completed);
4055         iwl_setup_scan_deferred_work(priv);
4056
4057         if (priv->cfg->ops->lib->setup_deferred_work)
4058                 priv->cfg->ops->lib->setup_deferred_work(priv);
4059
4060         init_timer(&priv->statistics_periodic);
4061         priv->statistics_periodic.data = (unsigned long)priv;
4062         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4063
4064         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4065                      iwl4965_irq_tasklet, (unsigned long)priv);
4066 }
4067
4068 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4069 {
4070         if (priv->cfg->ops->lib->cancel_deferred_work)
4071                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4072
4073         cancel_delayed_work_sync(&priv->init_alive_start);
4074         cancel_delayed_work(&priv->scan_check);
4075         cancel_delayed_work(&priv->alive_start);
4076         cancel_delayed_work(&priv->post_associate);
4077         cancel_work_sync(&priv->beacon_update);
4078         del_timer_sync(&priv->statistics_periodic);
4079 }
4080
4081 static struct attribute *iwl4965_sysfs_entries[] = {
4082         &dev_attr_channels.attr,
4083         &dev_attr_flags.attr,
4084         &dev_attr_filter_flags.attr,
4085 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
4086         &dev_attr_measurement.attr,
4087 #endif
4088         &dev_attr_power_level.attr,
4089         &dev_attr_retry_rate.attr,
4090         &dev_attr_rs_window.attr,
4091         &dev_attr_statistics.attr,
4092         &dev_attr_status.attr,
4093         &dev_attr_temperature.attr,
4094         &dev_attr_tx_power.attr,
4095 #ifdef CONFIG_IWLWIFI_DEBUG
4096         &dev_attr_debug_level.attr,
4097 #endif
4098         &dev_attr_version.attr,
4099
4100         NULL
4101 };
4102
4103 static struct attribute_group iwl4965_attribute_group = {
4104         .name = NULL,           /* put in device directory */
4105         .attrs = iwl4965_sysfs_entries,
4106 };
4107
4108 static struct ieee80211_ops iwl4965_hw_ops = {
4109         .tx = iwl4965_mac_tx,
4110         .start = iwl4965_mac_start,
4111         .stop = iwl4965_mac_stop,
4112         .add_interface = iwl4965_mac_add_interface,
4113         .remove_interface = iwl4965_mac_remove_interface,
4114         .config = iwl4965_mac_config,
4115         .config_interface = iwl4965_mac_config_interface,
4116         .configure_filter = iwl4965_configure_filter,
4117         .set_key = iwl4965_mac_set_key,
4118         .update_tkip_key = iwl4965_mac_update_tkip_key,
4119         .get_stats = iwl4965_mac_get_stats,
4120         .get_tx_stats = iwl4965_mac_get_tx_stats,
4121         .conf_tx = iwl4965_mac_conf_tx,
4122         .get_tsf = iwl4965_mac_get_tsf,
4123         .reset_tsf = iwl4965_mac_reset_tsf,
4124         .beacon_update = iwl4965_mac_beacon_update,
4125         .bss_info_changed = iwl4965_bss_info_changed,
4126         .ampdu_action = iwl4965_mac_ampdu_action,
4127         .hw_scan = iwl4965_mac_hw_scan
4128 };
4129
4130 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4131 {
4132         int err = 0;
4133         struct iwl_priv *priv;
4134         struct ieee80211_hw *hw;
4135         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4136         unsigned long flags;
4137         DECLARE_MAC_BUF(mac);
4138
4139         /************************
4140          * 1. Allocating HW data
4141          ************************/
4142
4143         /* Disabling hardware scan means that mac80211 will perform scans
4144          * "the hard way", rather than using device's scan. */
4145         if (cfg->mod_params->disable_hw_scan) {
4146                 if (cfg->mod_params->debug & IWL_DL_INFO)
4147                         dev_printk(KERN_DEBUG, &(pdev->dev),
4148                                    "Disabling hw_scan\n");
4149                 iwl4965_hw_ops.hw_scan = NULL;
4150         }
4151
4152         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4153         if (!hw) {
4154                 err = -ENOMEM;
4155                 goto out;
4156         }
4157         priv = hw->priv;
4158         /* At this point both hw and priv are allocated. */
4159
4160         SET_IEEE80211_DEV(hw, &pdev->dev);
4161
4162         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4163         priv->cfg = cfg;
4164         priv->pci_dev = pdev;
4165
4166 #ifdef CONFIG_IWLWIFI_DEBUG
4167         priv->debug_level = priv->cfg->mod_params->debug;
4168         atomic_set(&priv->restrict_refcnt, 0);
4169 #endif
4170
4171         /**************************
4172          * 2. Initializing PCI bus
4173          **************************/
4174         if (pci_enable_device(pdev)) {
4175                 err = -ENODEV;
4176                 goto out_ieee80211_free_hw;
4177         }
4178
4179         pci_set_master(pdev);
4180
4181         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
4182         if (!err)
4183                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
4184         if (err) {
4185                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
4186                 if (!err)
4187                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
4188                 /* both attempts failed: */
4189                 if (err) {
4190                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4191                                 DRV_NAME);
4192                         goto out_pci_disable_device;
4193                 }
4194         }
4195
4196         err = pci_request_regions(pdev, DRV_NAME);
4197         if (err)
4198                 goto out_pci_disable_device;
4199
4200         pci_set_drvdata(pdev, priv);
4201
4202         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4203          * PCI Tx retries from interfering with C3 CPU state */
4204         pci_write_config_byte(pdev, 0x41, 0x00);
4205
4206         /***********************
4207          * 3. Read REV register
4208          ***********************/
4209         priv->hw_base = pci_iomap(pdev, 0, 0);
4210         if (!priv->hw_base) {
4211                 err = -ENODEV;
4212                 goto out_pci_release_regions;
4213         }
4214
4215         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4216                 (unsigned long long) pci_resource_len(pdev, 0));
4217         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4218
4219         iwl_hw_detect(priv);
4220         printk(KERN_INFO DRV_NAME
4221                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4222                 priv->cfg->name, priv->hw_rev);
4223
4224         /* amp init */
4225         err = priv->cfg->ops->lib->apm_ops.init(priv);
4226         if (err < 0) {
4227                 IWL_DEBUG_INFO("Failed to init APMG\n");
4228                 goto out_iounmap;
4229         }
4230         /*****************
4231          * 4. Read EEPROM
4232          *****************/
4233         /* Read the EEPROM */
4234         err = iwl_eeprom_init(priv);
4235         if (err) {
4236                 IWL_ERROR("Unable to init EEPROM\n");
4237                 goto out_iounmap;
4238         }
4239         err = iwl_eeprom_check_version(priv);
4240         if (err)
4241                 goto out_iounmap;
4242
4243         /* extract MAC Address */
4244         iwl_eeprom_get_mac(priv, priv->mac_addr);
4245         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4246         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4247
4248         /************************
4249          * 5. Setup HW constants
4250          ************************/
4251         /* Device-specific setup */
4252         if (priv->cfg->ops->lib->set_hw_params(priv)) {
4253                 IWL_ERROR("failed to set hw parameters\n");
4254                 goto out_free_eeprom;
4255         }
4256
4257         /*******************
4258          * 6. Setup priv
4259          *******************/
4260
4261         err = iwl_init_drv(priv);
4262         if (err)
4263                 goto out_free_eeprom;
4264         /* At this point both hw and priv are initialized. */
4265
4266         /**********************************
4267          * 7. Initialize module parameters
4268          **********************************/
4269
4270         /* Disable radio (SW RF KILL) via parameter when loading driver */
4271         if (priv->cfg->mod_params->disable) {
4272                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4273                 IWL_DEBUG_INFO("Radio disabled.\n");
4274         }
4275
4276         /********************
4277          * 8. Setup services
4278          ********************/
4279         spin_lock_irqsave(&priv->lock, flags);
4280         iwl4965_disable_interrupts(priv);
4281         spin_unlock_irqrestore(&priv->lock, flags);
4282
4283         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4284         if (err) {
4285                 IWL_ERROR("failed to create sysfs device attributes\n");
4286                 goto out_uninit_drv;
4287         }
4288
4289
4290         iwl_setup_deferred_work(priv);
4291         iwl4965_setup_rx_handlers(priv);
4292
4293         /********************
4294          * 9. Conclude
4295          ********************/
4296         pci_save_state(pdev);
4297         pci_disable_device(pdev);
4298
4299         /**********************************
4300          * 10. Setup and register mac80211
4301          **********************************/
4302
4303         err = iwl_setup_mac(priv);
4304         if (err)
4305                 goto out_remove_sysfs;
4306
4307         err = iwl_dbgfs_register(priv, DRV_NAME);
4308         if (err)
4309                 IWL_ERROR("failed to create debugfs files\n");
4310
4311         err = iwl_rfkill_init(priv);
4312         if (err)
4313                 IWL_ERROR("Unable to initialize RFKILL system. "
4314                                   "Ignoring error: %d\n", err);
4315         iwl_power_initialize(priv);
4316         return 0;
4317
4318  out_remove_sysfs:
4319         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4320  out_uninit_drv:
4321         iwl_uninit_drv(priv);
4322  out_free_eeprom:
4323         iwl_eeprom_free(priv);
4324  out_iounmap:
4325         pci_iounmap(pdev, priv->hw_base);
4326  out_pci_release_regions:
4327         pci_release_regions(pdev);
4328         pci_set_drvdata(pdev, NULL);
4329  out_pci_disable_device:
4330         pci_disable_device(pdev);
4331  out_ieee80211_free_hw:
4332         ieee80211_free_hw(priv->hw);
4333  out:
4334         return err;
4335 }
4336
4337 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4338 {
4339         struct iwl_priv *priv = pci_get_drvdata(pdev);
4340         struct list_head *p, *q;
4341         int i;
4342         unsigned long flags;
4343
4344         if (!priv)
4345                 return;
4346
4347         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4348
4349         iwl_dbgfs_unregister(priv);
4350         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4351
4352         if (priv->mac80211_registered) {
4353                 ieee80211_unregister_hw(priv->hw);
4354                 priv->mac80211_registered = 0;
4355         }
4356
4357         set_bit(STATUS_EXIT_PENDING, &priv->status);
4358
4359         iwl4965_down(priv);
4360
4361         /* make sure we flush any pending irq or
4362          * tasklet for the driver
4363          */
4364         spin_lock_irqsave(&priv->lock, flags);
4365         iwl4965_disable_interrupts(priv);
4366         spin_unlock_irqrestore(&priv->lock, flags);
4367
4368         iwl_synchronize_irq(priv);
4369
4370         /* Free MAC hash list for ADHOC */
4371         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
4372                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
4373                         list_del(p);
4374                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
4375                 }
4376         }
4377
4378         iwl_rfkill_unregister(priv);
4379         iwl4965_dealloc_ucode_pci(priv);
4380
4381         if (priv->rxq.bd)
4382                 iwl_rx_queue_free(priv, &priv->rxq);
4383         iwl_hw_txq_ctx_free(priv);
4384
4385         iwl_clear_stations_table(priv);
4386         iwl_eeprom_free(priv);
4387
4388
4389         /*netif_stop_queue(dev); */
4390         flush_workqueue(priv->workqueue);
4391
4392         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4393          * priv->workqueue... so we can't take down the workqueue
4394          * until now... */
4395         destroy_workqueue(priv->workqueue);
4396         priv->workqueue = NULL;
4397
4398         pci_iounmap(pdev, priv->hw_base);
4399         pci_release_regions(pdev);
4400         pci_disable_device(pdev);
4401         pci_set_drvdata(pdev, NULL);
4402
4403         iwl_uninit_drv(priv);
4404
4405         if (priv->ibss_beacon)
4406                 dev_kfree_skb(priv->ibss_beacon);
4407
4408         ieee80211_free_hw(priv->hw);
4409 }
4410
4411 #ifdef CONFIG_PM
4412
4413 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4414 {
4415         struct iwl_priv *priv = pci_get_drvdata(pdev);
4416
4417         if (priv->is_open) {
4418                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4419                 iwl4965_mac_stop(priv->hw);
4420                 priv->is_open = 1;
4421         }
4422
4423         pci_set_power_state(pdev, PCI_D3hot);
4424
4425         return 0;
4426 }
4427
4428 static int iwl4965_pci_resume(struct pci_dev *pdev)
4429 {
4430         struct iwl_priv *priv = pci_get_drvdata(pdev);
4431
4432         pci_set_power_state(pdev, PCI_D0);
4433
4434         if (priv->is_open)
4435                 iwl4965_mac_start(priv->hw);
4436
4437         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4438         return 0;
4439 }
4440
4441 #endif /* CONFIG_PM */
4442
4443 /*****************************************************************************
4444  *
4445  * driver and module entry point
4446  *
4447  *****************************************************************************/
4448
4449 /* Hardware specific file defines the PCI IDs table for that hardware module */
4450 static struct pci_device_id iwl_hw_card_ids[] = {
4451         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4452         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4453 #ifdef CONFIG_IWL5000
4454         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4455         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4456         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
4457 #endif /* CONFIG_IWL5000 */
4458         {0}
4459 };
4460 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4461
4462 static struct pci_driver iwl_driver = {
4463         .name = DRV_NAME,
4464         .id_table = iwl_hw_card_ids,
4465         .probe = iwl4965_pci_probe,
4466         .remove = __devexit_p(iwl4965_pci_remove),
4467 #ifdef CONFIG_PM
4468         .suspend = iwl4965_pci_suspend,
4469         .resume = iwl4965_pci_resume,
4470 #endif
4471 };
4472
4473 static int __init iwl4965_init(void)
4474 {
4475
4476         int ret;
4477         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4478         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4479
4480         ret = iwl4965_rate_control_register();
4481         if (ret) {
4482                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4483                 return ret;
4484         }
4485
4486         ret = pci_register_driver(&iwl_driver);
4487         if (ret) {
4488                 IWL_ERROR("Unable to initialize PCI module\n");
4489                 goto error_register;
4490         }
4491
4492         return ret;
4493
4494 error_register:
4495         iwl4965_rate_control_unregister();
4496         return ret;
4497 }
4498
4499 static void __exit iwl4965_exit(void)
4500 {
4501         pci_unregister_driver(&iwl_driver);
4502         iwl4965_rate_control_unregister();
4503 }
4504
4505 module_exit(iwl4965_exit);
4506 module_init(iwl4965_init);