drivers/net/wireless/iwlwifi/iwl-agn.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/init.h>
  33 #include <linux/pci.h>
  34 #include <linux/dma-mapping.h>
  35 #include <linux/delay.h>
  36 #include <linux/skbuff.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/wireless.h>
  39 #include <linux/firmware.h>
  40 #include <linux/etherdevice.h>
  41 #include <linux/if_arp.h>
  42
  43 #include <net/mac80211.h>
  44
  45 #include <asm/div64.h>
  46
  47 #include "iwl-eeprom.h"
  48 #include "iwl-dev.h"
  49 #include "iwl-core.h"
  50 #include "iwl-io.h"
  51 #include "iwl-helpers.h"
  52 #include "iwl-sta.h"
  53 #include "iwl-calib.h"
  54
  55
  56 /******************************************************************************
  57  *
  58  * module boiler plate
  59  *
  60  ******************************************************************************/
  61
  62 /*
  63  * module name, copyright, version, etc.
  64  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  65  */
  66
  67 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
  68
  69 #ifdef CONFIG_IWLWIFI_DEBUG
  70 #define VD "d"
  71 #else
  72 #define VD
  73 #endif
  74
  75 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
  76 #define VS "s"
  77 #else
  78 #define VS
  79 #endif
  80
  81 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  82
  83
  84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  85 MODULE_VERSION(DRV_VERSION);
  86 MODULE_AUTHOR(DRV_COPYRIGHT);
  87 MODULE_LICENSE("GPL");
  88 MODULE_ALIAS("iwl4965");
  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  * iwl_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 iwl_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.assoc_id != priv->active_rxon.assoc_id))
 211                 return 1;
 212
 213         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 214          * be updated with the RXON_ASSOC command -- however only some
 215          * flag transitions are allowed using RXON_ASSOC */
 216
 217         /* Check if we are not switching bands */
 218         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 219             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 220                 return 1;
 221
 222         /* Check if we are switching association toggle */
 223         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 224                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 225                 return 1;
 226
 227         return 0;
 228 }
 229
 230 /**
 231  * iwl4965_commit_rxon - commit staging_rxon to hardware
 232  *
 233  * The RXON command in staging_rxon is committed to the hardware and
 234  * the active_rxon structure is updated with the new data.  This
 235  * function correctly transitions out of the RXON_ASSOC_MSK state if
 236  * a HW tune is required based on the RXON structure changes.
 237  */
 238 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 239 {
 240         /* cast away the const for active_rxon in this function */
 241         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 242         DECLARE_MAC_BUF(mac);
 243         int ret;
 244         bool new_assoc =
 245                 !!(priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK);
 246
 247         if (!iwl_is_alive(priv))
 248                 return -EBUSY;
 249
 250         /* always get timestamp with Rx frame */
 251         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 252         /* allow CTS-to-self if possible. this is relevant only for
 253          * 5000, but will not damage 4965 */
 254         priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 255
 256         ret = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 257         if (ret) {
 258                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 259                 return -EINVAL;
 260         }
 261
 262         /* If we don't need to send a full RXON, we can use
 263          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 264          * and other flags for the current radio configuration. */
 265         if (!iwl_full_rxon_required(priv)) {
 266                 ret = iwl_send_rxon_assoc(priv);
 267                 if (ret) {
 268                         IWL_ERROR("Error setting RXON_ASSOC (%d)\n", ret);
 269                         return ret;
 270                 }
 271
 272                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 273                 return 0;
 274         }
 275
 276         /* station table will be cleared */
 277         priv->assoc_station_added = 0;
 278
 279         /* If we are currently associated and the new config requires
 280          * an RXON_ASSOC and the new config wants the associated mask enabled,
 281          * we must clear the associated from the active configuration
 282          * before we apply the new config */
 283         if (iwl_is_associated(priv) && new_assoc) {
 284                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 285                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 286
 287                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 288                                       sizeof(struct iwl_rxon_cmd),
 289                                       &priv->active_rxon);
 290
 291                 /* If the mask clearing failed then we set
 292                  * active_rxon back to what it was previously */
 293                 if (ret) {
 294                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 295                         IWL_ERROR("Error clearing ASSOC_MSK (%d)\n", ret);
 296                         return ret;
 297                 }
 298         }
 299
 300         IWL_DEBUG_INFO("Sending RXON\n"
 301                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 302                        "* channel = %d\n"
 303                        "* bssid = %s\n",
 304                        (new_assoc ? "" : "out"),
 305                        le16_to_cpu(priv->staging_rxon.channel),
 306                        print_mac(mac, priv->staging_rxon.bssid_addr));
 307
 308         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 309
 310         /* Apply the new configuration
 311          * RXON unassoc clears the station table in uCode, send it before
 312          * we add the bcast station. If assoc bit is set, we will send RXON
 313          * after having added the bcast and bssid station.
 314          */
 315         if (!new_assoc) {
 316                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 317                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 318                 if (ret) {
 319                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 320                         return ret;
 321                 }
 322                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 323         }
 324
 325         iwl_clear_stations_table(priv);
 326
 327         if (!priv->error_recovering)
 328                 priv->start_calib = 0;
 329
 330         /* Add the broadcast address so we can send broadcast frames */
 331         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 332                                                 IWL_INVALID_STATION) {
 333                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 334                 return -EIO;
 335         }
 336
 337         /* If we have set the ASSOC_MSK and we are in BSS mode then
 338          * add the IWL_AP_ID to the station rate table */
 339         if (new_assoc) {
 340                 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 341                         ret = iwl_rxon_add_station(priv,
 342                                            priv->active_rxon.bssid_addr, 1);
 343                         if (ret == IWL_INVALID_STATION) {
 344                                 IWL_ERROR("Error adding AP address for TX.\n");
 345                                 return -EIO;
 346                         }
 347                         priv->assoc_station_added = 1;
 348                         if (priv->default_wep_key &&
 349                             iwl_send_static_wepkey_cmd(priv, 0))
 350                                 IWL_ERROR("Could not send WEP static key.\n");
 351                 }
 352
 353                 /* Apply the new configuration
 354                  * RXON assoc doesn't clear the station table in uCode,
 355                  */
 356                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON,
 357                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 358                 if (ret) {
 359                         IWL_ERROR("Error setting new RXON (%d)\n", ret);
 360                         return ret;
 361                 }
 362                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 363         }
 364
 365         iwl_init_sensitivity(priv);
 366
 367         /* If we issue a new RXON command which required a tune then we must
 368          * send a new TXPOWER command or we won't be able to Tx any frames */
 369         ret = iwl_set_tx_power(priv, priv->tx_power_user_lmt, true);
 370         if (ret) {
 371                 IWL_ERROR("Error sending TX power (%d)\n", ret);
 372                 return ret;
 373         }
 374
 375         return 0;
 376 }
 377
 378 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 379 {
 380
 381         iwl_set_rxon_chain(priv);
 382         iwl4965_commit_rxon(priv);
 383 }
 384
 385 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 386 {
 387         struct iwl4965_bt_cmd bt_cmd = {
 388                 .flags = 3,
 389                 .lead_time = 0xAA,
 390                 .max_kill = 1,
 391                 .kill_ack_mask = 0,
 392                 .kill_cts_mask = 0,
 393         };
 394
 395         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 396                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 397 }
 398
 399 static void iwl_clear_free_frames(struct iwl_priv *priv)
 400 {
 401         struct list_head *element;
 402
 403         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 404                        priv->frames_count);
 405
 406         while (!list_empty(&priv->free_frames)) {
 407                 element = priv->free_frames.next;
 408                 list_del(element);
 409                 kfree(list_entry(element, struct iwl_frame, list));
 410                 priv->frames_count--;
 411         }
 412
 413         if (priv->frames_count) {
 414                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 415                             priv->frames_count);
 416                 priv->frames_count = 0;
 417         }
 418 }
 419
 420 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 421 {
 422         struct iwl_frame *frame;
 423         struct list_head *element;
 424         if (list_empty(&priv->free_frames)) {
 425                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 426                 if (!frame) {
 427                         IWL_ERROR("Could not allocate frame!\n");
 428                         return NULL;
 429                 }
 430
 431                 priv->frames_count++;
 432                 return frame;
 433         }
 434
 435         element = priv->free_frames.next;
 436         list_del(element);
 437         return list_entry(element, struct iwl_frame, list);
 438 }
 439
 440 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 441 {
 442         memset(frame, 0, sizeof(*frame));
 443         list_add(&frame->list, &priv->free_frames);
 444 }
 445
 446 static unsigned int iwl_fill_beacon_frame(struct iwl_priv *priv,
 447                                           struct ieee80211_hdr *hdr,
 448                                           const u8 *dest, int left)
 449 {
 450         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 451             ((priv->iw_mode != NL80211_IFTYPE_ADHOC) &&
 452              (priv->iw_mode != NL80211_IFTYPE_AP)))
 453                 return 0;
 454
 455         if (priv->ibss_beacon->len > left)
 456                 return 0;
 457
 458         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 459
 460         return priv->ibss_beacon->len;
 461 }
 462
 463 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 464 {
 465         int i;
 466         int rate_mask;
 467
 468         /* Set rate mask*/
 469         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 470                 rate_mask = priv->active_rate_basic & 0xF;
 471         else
 472                 rate_mask = priv->active_rate_basic & 0xFF0;
 473
 474         /* Find lowest valid rate */
 475         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 476                                         i = iwl_rates[i].next_ieee) {
 477                 if (rate_mask & (1 << i))
 478                         return iwl_rates[i].plcp;
 479         }
 480
 481         /* No valid rate was found. Assign the lowest one */
 482         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 483                 return IWL_RATE_1M_PLCP;
 484         else
 485                 return IWL_RATE_6M_PLCP;
 486 }
 487
 488 static unsigned int iwl4965_hw_get_beacon_cmd(struct iwl_priv *priv,
 489                                        struct iwl_frame *frame, u8 rate)
 490 {
 491         struct iwl_tx_beacon_cmd *tx_beacon_cmd;
 492         unsigned int frame_size;
 493
 494         tx_beacon_cmd = &frame->u.beacon;
 495         memset(tx_beacon_cmd, 0, sizeof(*tx_beacon_cmd));
 496
 497         tx_beacon_cmd->tx.sta_id = priv->hw_params.bcast_sta_id;
 498         tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
 499
 500         frame_size = iwl_fill_beacon_frame(priv, tx_beacon_cmd->frame,
 501                                 iwl_bcast_addr,
 502                                 sizeof(frame->u) - sizeof(*tx_beacon_cmd));
 503
 504         BUG_ON(frame_size > MAX_MPDU_SIZE);
 505         tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
 506
 507         if ((rate == IWL_RATE_1M_PLCP) || (rate >= IWL_RATE_2M_PLCP))
 508                 tx_beacon_cmd->tx.rate_n_flags =
 509                         iwl_hw_set_rate_n_flags(rate, RATE_MCS_CCK_MSK);
 510         else
 511                 tx_beacon_cmd->tx.rate_n_flags =
 512                         iwl_hw_set_rate_n_flags(rate, 0);
 513
 514         tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
 515                                      TX_CMD_FLG_TSF_MSK |
 516                                      TX_CMD_FLG_STA_RATE_MSK;
 517
 518         return sizeof(*tx_beacon_cmd) + frame_size;
 519 }
 520 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 521 {
 522         struct iwl_frame *frame;
 523         unsigned int frame_size;
 524         int rc;
 525         u8 rate;
 526
 527         frame = iwl_get_free_frame(priv);
 528
 529         if (!frame) {
 530                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 531                           "command.\n");
 532                 return -ENOMEM;
 533         }
 534
 535         rate = iwl4965_rate_get_lowest_plcp(priv);
 536
 537         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 538
 539         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 540                               &frame->u.cmd[0]);
 541
 542         iwl_free_frame(priv, frame);
 543
 544         return rc;
 545 }
 546
 547 /******************************************************************************
 548  *
 549  * Misc. internal state and helper functions
 550  *
 551  ******************************************************************************/
 552
 553 static void iwl4965_ht_conf(struct iwl_priv *priv,
 554                             struct ieee80211_bss_conf *bss_conf)
 555 {
 556         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 557         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 558         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 559
 560         IWL_DEBUG_MAC80211("enter: \n");
 561
 562         iwl_conf->is_ht = bss_conf->assoc_ht;
 563
 564         if (!iwl_conf->is_ht)
 565                 return;
 566
 567         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 568                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 569         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 570                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 571
 572         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 573         iwl_conf->max_amsdu_size =
 574                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 575
 576         iwl_conf->supported_chan_width =
 577                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 578         iwl_conf->extension_chan_offset =
 579                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 580         /* If no above or below channel supplied disable FAT channel */
 581         if (iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_ABOVE &&
 582             iwl_conf->extension_chan_offset != IEEE80211_HT_IE_CHA_SEC_BELOW) {
 583                 iwl_conf->extension_chan_offset = IEEE80211_HT_IE_CHA_SEC_NONE;
 584                 iwl_conf->supported_chan_width = 0;
 585         }
 586
 587         iwl_conf->sm_ps = (u8)((ht_conf->cap & IEEE80211_HT_CAP_SM_PS) >> 2);
 588
 589         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 590
 591         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 592         iwl_conf->tx_chan_width =
 593                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 594         iwl_conf->ht_protection =
 595                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 596         iwl_conf->non_GF_STA_present =
 597                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 598
 599         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 600         IWL_DEBUG_MAC80211("leave\n");
 601 }
 602
 603 /*
 604  * QoS  support
 605 */
 606 static void iwl_activate_qos(struct iwl_priv *priv, u8 force)
 607 {
 608         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 609                 return;
 610
 611         if (!priv->qos_data.qos_enable)
 612                 return;
 613
 614         priv->qos_data.def_qos_parm.qos_flags = 0;
 615
 616         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 617             !priv->qos_data.qos_cap.q_AP.txop_request)
 618                 priv->qos_data.def_qos_parm.qos_flags |=
 619                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 620         if (priv->qos_data.qos_active)
 621                 priv->qos_data.def_qos_parm.qos_flags |=
 622                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 623
 624         if (priv->current_ht_config.is_ht)
 625                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 626
 627         if (force || iwl_is_associated(priv)) {
 628                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 629                                 priv->qos_data.qos_active,
 630                                 priv->qos_data.def_qos_parm.qos_flags);
 631
 632                 iwl_send_cmd_pdu_async(priv, REPLY_QOS_PARAM,
 633                                        sizeof(struct iwl_qosparam_cmd),
 634                                        &priv->qos_data.def_qos_parm, NULL);
 635         }
 636 }
 637
 638 #define MAX_UCODE_BEACON_INTERVAL       4096
 639
 640 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
 641 {
 642         u16 new_val = 0;
 643         u16 beacon_factor = 0;
 644
 645         beacon_factor =
 646             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
 647                 / MAX_UCODE_BEACON_INTERVAL;
 648         new_val = beacon_val / beacon_factor;
 649
 650         return cpu_to_le16(new_val);
 651 }
 652
 653 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
 654 {
 655         u64 interval_tm_unit;
 656         u64 tsf, result;
 657         unsigned long flags;
 658         struct ieee80211_conf *conf = NULL;
 659         u16 beacon_int = 0;
 660
 661         conf = ieee80211_get_hw_conf(priv->hw);
 662
 663         spin_lock_irqsave(&priv->lock, flags);
 664         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
 665         priv->rxon_timing.timestamp.dw[0] =
 666                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
 667
 668         priv->rxon_timing.listen_interval = cpu_to_le16(conf->listen_interval);
 669
 670         tsf = priv->timestamp;
 671
 672         beacon_int = priv->beacon_int;
 673         spin_unlock_irqrestore(&priv->lock, flags);
 674
 675         if (priv->iw_mode == NL80211_IFTYPE_STATION) {
 676                 if (beacon_int == 0) {
 677                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
 678                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
 679                 } else {
 680                         priv->rxon_timing.beacon_interval =
 681                                 cpu_to_le16(beacon_int);
 682                         priv->rxon_timing.beacon_interval =
 683                             iwl4965_adjust_beacon_interval(
 684                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 685                 }
 686
 687                 priv->rxon_timing.atim_window = 0;
 688         } else {
 689                 priv->rxon_timing.beacon_interval =
 690                         iwl4965_adjust_beacon_interval(conf->beacon_int);
 691                 /* TODO: we need to get atim_window from upper stack
 692                  * for now we set to 0 */
 693                 priv->rxon_timing.atim_window = 0;
 694         }
 695
 696         interval_tm_unit =
 697                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
 698         result = do_div(tsf, interval_tm_unit);
 699         priv->rxon_timing.beacon_init_val =
 700             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
 701
 702         IWL_DEBUG_ASSOC
 703             ("beacon interval %d beacon timer %d beacon tim %d\n",
 704                 le16_to_cpu(priv->rxon_timing.beacon_interval),
 705                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
 706                 le16_to_cpu(priv->rxon_timing.atim_window));
 707 }
 708
 709 static void iwl_set_flags_for_band(struct iwl_priv *priv,
 710                                    enum ieee80211_band band)
 711 {
 712         if (band == IEEE80211_BAND_5GHZ) {
 713                 priv->staging_rxon.flags &=
 714                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
 715                       | RXON_FLG_CCK_MSK);
 716                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 717         } else {
 718                 /* Copied from iwl4965_post_associate() */
 719                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
 720                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
 721                 else
 722                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 723
 724                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
 725                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
 726
 727                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
 728                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
 729                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
 730         }
 731 }
 732
 733 /*
 734  * initialize rxon structure with default values from eeprom
 735  */
 736 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
 737 {
 738         const struct iwl_channel_info *ch_info;
 739
 740         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
 741
 742         switch (priv->iw_mode) {
 743         case NL80211_IFTYPE_AP:
 744                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
 745                 break;
 746
 747         case NL80211_IFTYPE_STATION:
 748                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
 749                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
 750                 break;
 751
 752         case NL80211_IFTYPE_ADHOC:
 753                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
 754                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
 755                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
 756                                                   RXON_FILTER_ACCEPT_GRP_MSK;
 757                 break;
 758
 759         case NL80211_IFTYPE_MONITOR:
 760                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
 761                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
 762                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
 763                 break;
 764         default:
 765                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
 766                 break;
 767         }
 768
 769 #if 0
 770         /* TODO:  Figure out when short_preamble would be set and cache from
 771          * that */
 772         if (!hw_to_local(priv->hw)->short_preamble)
 773                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
 774         else
 775                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
 776 #endif
 777
 778         ch_info = iwl_get_channel_info(priv, priv->band,
 779                                        le16_to_cpu(priv->active_rxon.channel));
 780
 781         if (!ch_info)
 782                 ch_info = &priv->channel_info[0];
 783
 784         /*
 785          * in some case A channels are all non IBSS
 786          * in this case force B/G channel
 787          */
 788         if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) &&
 789             !(is_channel_ibss(ch_info)))
 790                 ch_info = &priv->channel_info[0];
 791
 792         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
 793         priv->band = ch_info->band;
 794
 795         iwl_set_flags_for_band(priv, priv->band);
 796
 797         priv->staging_rxon.ofdm_basic_rates =
 798             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 799         priv->staging_rxon.cck_basic_rates =
 800             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 801
 802         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
 803                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
 804         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 805         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
 806         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
 807         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
 808         iwl_set_rxon_chain(priv);
 809 }
 810
 811 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
 812 {
 813         priv->iw_mode = mode;
 814
 815         iwl4965_connection_init_rx_config(priv);
 816         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
 817
 818         iwl_clear_stations_table(priv);
 819
 820         /* dont commit rxon if rf-kill is on*/
 821         if (!iwl_is_ready_rf(priv))
 822                 return -EAGAIN;
 823
 824         cancel_delayed_work(&priv->scan_check);
 825         if (iwl_scan_cancel_timeout(priv, 100)) {
 826                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
 827                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
 828                 return -EAGAIN;
 829         }
 830
 831         iwl4965_commit_rxon(priv);
 832
 833         return 0;
 834 }
 835
 836 static void iwl4965_set_rate(struct iwl_priv *priv)
 837 {
 838         const struct ieee80211_supported_band *hw = NULL;
 839         struct ieee80211_rate *rate;
 840         int i;
 841
 842         hw = iwl_get_hw_mode(priv, priv->band);
 843         if (!hw) {
 844                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
 845                 return;
 846         }
 847
 848         priv->active_rate = 0;
 849         priv->active_rate_basic = 0;
 850
 851         for (i = 0; i < hw->n_bitrates; i++) {
 852                 rate = &(hw->bitrates[i]);
 853                 if (rate->hw_value < IWL_RATE_COUNT)
 854                         priv->active_rate |= (1 << rate->hw_value);
 855         }
 856
 857         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
 858                        priv->active_rate, priv->active_rate_basic);
 859
 860         /*
 861          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
 862          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
 863          * OFDM
 864          */
 865         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
 866                 priv->staging_rxon.cck_basic_rates =
 867                     ((priv->active_rate_basic &
 868                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
 869         else
 870                 priv->staging_rxon.cck_basic_rates =
 871                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
 872
 873         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
 874                 priv->staging_rxon.ofdm_basic_rates =
 875                     ((priv->active_rate_basic &
 876                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
 877                       IWL_FIRST_OFDM_RATE) & 0xFF;
 878         else
 879                 priv->staging_rxon.ofdm_basic_rates =
 880                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
 881 }
 882
 883 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
 884
 885 #include "iwl-spectrum.h"
 886
 887 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
 888 #define BEACON_TIME_MASK_HIGH   0xFF000000
 889 #define TIME_UNIT               1024
 890
 891 /*
 892  * extended beacon time format
 893  * time in usec will be changed into a 32-bit value in 8:24 format
 894  * the high 1 byte is the beacon counts
 895  * the lower 3 bytes is the time in usec within one beacon interval
 896  */
 897
 898 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
 899 {
 900         u32 quot;
 901         u32 rem;
 902         u32 interval = beacon_interval * 1024;
 903
 904         if (!interval || !usec)
 905                 return 0;
 906
 907         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
 908         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
 909
 910         return (quot << 24) + rem;
 911 }
 912
 913 /* base is usually what we get from ucode with each received frame,
 914  * the same as HW timer counter counting down
 915  */
 916
 917 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
 918 {
 919         u32 base_low = base & BEACON_TIME_MASK_LOW;
 920         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
 921         u32 interval = beacon_interval * TIME_UNIT;
 922         u32 res = (base & BEACON_TIME_MASK_HIGH) +
 923             (addon & BEACON_TIME_MASK_HIGH);
 924
 925         if (base_low > addon_low)
 926                 res += base_low - addon_low;
 927         else if (base_low < addon_low) {
 928                 res += interval + base_low - addon_low;
 929                 res += (1 << 24);
 930         } else
 931                 res += (1 << 24);
 932
 933         return cpu_to_le32(res);
 934 }
 935
 936 static int iwl4965_get_measurement(struct iwl_priv *priv,
 937                                struct ieee80211_measurement_params *params,
 938                                u8 type)
 939 {
 940         struct iwl4965_spectrum_cmd spectrum;
 941         struct iwl_rx_packet *res;
 942         struct iwl_host_cmd cmd = {
 943                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
 944                 .data = (void *)&spectrum,
 945                 .meta.flags = CMD_WANT_SKB,
 946         };
 947         u32 add_time = le64_to_cpu(params->start_time);
 948         int rc;
 949         int spectrum_resp_status;
 950         int duration = le16_to_cpu(params->duration);
 951
 952         if (iwl_is_associated(priv))
 953                 add_time =
 954                     iwl4965_usecs_to_beacons(
 955                         le64_to_cpu(params->start_time) - priv->last_tsf,
 956                         le16_to_cpu(priv->rxon_timing.beacon_interval));
 957
 958         memset(&spectrum, 0, sizeof(spectrum));
 959
 960         spectrum.channel_count = cpu_to_le16(1);
 961         spectrum.flags =
 962             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
 963         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
 964         cmd.len = sizeof(spectrum);
 965         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
 966
 967         if (iwl_is_associated(priv))
 968                 spectrum.start_time =
 969                     iwl4965_add_beacon_time(priv->last_beacon_time,
 970                                 add_time,
 971                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
 972         else
 973                 spectrum.start_time = 0;
 974
 975         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
 976         spectrum.channels[0].channel = params->channel;
 977         spectrum.channels[0].type = type;
 978         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
 979                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
 980                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
 981
 982         rc = iwl_send_cmd_sync(priv, &cmd);
 983         if (rc)
 984                 return rc;
 985
 986         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 987         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
 988                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
 989                 rc = -EIO;
 990         }
 991
 992         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
 993         switch (spectrum_resp_status) {
 994         case 0:         /* Command will be handled */
 995                 if (res->u.spectrum.id != 0xff) {
 996                         IWL_DEBUG_INFO
 997                             ("Replaced existing measurement: %d\n",
 998                              res->u.spectrum.id);
 999                         priv->measurement_status &= ~MEASUREMENT_READY;
1000                 }
1001                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1002                 rc = 0;
1003                 break;
1004
1005         case 1:         /* Command will not be handled */
1006                 rc = -EAGAIN;
1007                 break;
1008         }
1009
1010         dev_kfree_skb_any(cmd.meta.u.skb);
1011
1012         return rc;
1013 }
1014 #endif
1015
1016 /******************************************************************************
1017  *
1018  * Generic RX handler implementations
1019  *
1020  ******************************************************************************/
1021 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1022                                 struct iwl_rx_mem_buffer *rxb)
1023 {
1024         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1025         struct iwl_alive_resp *palive;
1026         struct delayed_work *pwork;
1027
1028         palive = &pkt->u.alive_frame;
1029
1030         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1031                        "0x%01X 0x%01X\n",
1032                        palive->is_valid, palive->ver_type,
1033                        palive->ver_subtype);
1034
1035         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1036                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1037                 memcpy(&priv->card_alive_init,
1038                        &pkt->u.alive_frame,
1039                        sizeof(struct iwl_init_alive_resp));
1040                 pwork = &priv->init_alive_start;
1041         } else {
1042                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1043                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1044                        sizeof(struct iwl_alive_resp));
1045                 pwork = &priv->alive_start;
1046         }
1047
1048         /* We delay the ALIVE response by 5ms to
1049          * give the HW RF Kill time to activate... */
1050         if (palive->is_valid == UCODE_VALID_OK)
1051                 queue_delayed_work(priv->workqueue, pwork,
1052                                    msecs_to_jiffies(5));
1053         else
1054                 IWL_WARNING("uCode did not respond OK.\n");
1055 }
1056
1057 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1058                                    struct iwl_rx_mem_buffer *rxb)
1059 {
1060         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1061
1062         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1063                 "seq 0x%04X ser 0x%08X\n",
1064                 le32_to_cpu(pkt->u.err_resp.error_type),
1065                 get_cmd_string(pkt->u.err_resp.cmd_id),
1066                 pkt->u.err_resp.cmd_id,
1067                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1068                 le32_to_cpu(pkt->u.err_resp.error_info));
1069 }
1070
1071 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1072
1073 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1074 {
1075         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1076         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1077         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1078         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1079                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1080         rxon->channel = csa->channel;
1081         priv->staging_rxon.channel = csa->channel;
1082 }
1083
1084 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
1085                                           struct iwl_rx_mem_buffer *rxb)
1086 {
1087 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
1088         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1089         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
1090
1091         if (!report->state) {
1092                 IWL_DEBUG(IWL_DL_11H,
1093                         "Spectrum Measure Notification: Start\n");
1094                 return;
1095         }
1096
1097         memcpy(&priv->measure_report, report, sizeof(*report));
1098         priv->measurement_status |= MEASUREMENT_READY;
1099 #endif
1100 }
1101
1102 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
1103                                       struct iwl_rx_mem_buffer *rxb)
1104 {
1105 #ifdef CONFIG_IWLWIFI_DEBUG
1106         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1107         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
1108         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
1109                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
1110 #endif
1111 }
1112
1113 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
1114                                              struct iwl_rx_mem_buffer *rxb)
1115 {
1116         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1117         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
1118                         "notification for %s:\n",
1119                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
1120         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
1121 }
1122
1123 static void iwl4965_bg_beacon_update(struct work_struct *work)
1124 {
1125         struct iwl_priv *priv =
1126                 container_of(work, struct iwl_priv, beacon_update);
1127         struct sk_buff *beacon;
1128
1129         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
1130         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
1131
1132         if (!beacon) {
1133                 IWL_ERROR("update beacon failed\n");
1134                 return;
1135         }
1136
1137         mutex_lock(&priv->mutex);
1138         /* new beacon skb is allocated every time; dispose previous.*/
1139         if (priv->ibss_beacon)
1140                 dev_kfree_skb(priv->ibss_beacon);
1141
1142         priv->ibss_beacon = beacon;
1143         mutex_unlock(&priv->mutex);
1144
1145         iwl4965_send_beacon_cmd(priv);
1146 }
1147
1148 /**
1149  * iwl4965_bg_statistics_periodic - Timer callback to queue statistics
1150  *
1151  * This callback is provided in order to send a statistics request.
1152  *
1153  * This timer function is continually reset to execute within
1154  * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
1155  * was received.  We need to ensure we receive the statistics in order
1156  * to update the temperature used for calibrating the TXPOWER.
1157  */
1158 static void iwl4965_bg_statistics_periodic(unsigned long data)
1159 {
1160         struct iwl_priv *priv = (struct iwl_priv *)data;
1161
1162         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
1163                 return;
1164
1165         iwl_send_statistics_request(priv, CMD_ASYNC);
1166 }
1167
1168 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
1169                                 struct iwl_rx_mem_buffer *rxb)
1170 {
1171 #ifdef CONFIG_IWLWIFI_DEBUG
1172         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1173         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
1174         u8 rate = iwl_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
1175
1176         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
1177                 "tsf %d %d rate %d\n",
1178                 le32_to_cpu(beacon->beacon_notify_hdr.u.status) & TX_STATUS_MSK,
1179                 beacon->beacon_notify_hdr.failure_frame,
1180                 le32_to_cpu(beacon->ibss_mgr_status),
1181                 le32_to_cpu(beacon->high_tsf),
1182                 le32_to_cpu(beacon->low_tsf), rate);
1183 #endif
1184
1185         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
1186             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
1187                 queue_work(priv->workqueue, &priv->beacon_update);
1188 }
1189
1190 /* Handle notification from uCode that card's power state is changing
1191  * due to software, hardware, or critical temperature RFKILL */
1192 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
1193                                     struct iwl_rx_mem_buffer *rxb)
1194 {
1195         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1196         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
1197         unsigned long status = priv->status;
1198
1199         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
1200                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
1201                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
1202
1203         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
1204                      RF_CARD_DISABLED)) {
1205
1206                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1207                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1208
1209                 if (!iwl_grab_nic_access(priv)) {
1210                         iwl_write_direct32(
1211                                 priv, HBUS_TARG_MBX_C,
1212                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1213
1214                         iwl_release_nic_access(priv);
1215                 }
1216
1217                 if (!(flags & RXON_CARD_DISABLED)) {
1218                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1219                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
1220                         if (!iwl_grab_nic_access(priv)) {
1221                                 iwl_write_direct32(
1222                                         priv, HBUS_TARG_MBX_C,
1223                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
1224
1225                                 iwl_release_nic_access(priv);
1226                         }
1227                 }
1228
1229                 if (flags & RF_CARD_DISABLED) {
1230                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1231                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1232                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1233                         if (!iwl_grab_nic_access(priv))
1234                                 iwl_release_nic_access(priv);
1235                 }
1236         }
1237
1238         if (flags & HW_CARD_DISABLED)
1239                 set_bit(STATUS_RF_KILL_HW, &priv->status);
1240         else
1241                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
1242
1243
1244         if (flags & SW_CARD_DISABLED)
1245                 set_bit(STATUS_RF_KILL_SW, &priv->status);
1246         else
1247                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
1248
1249         if (!(flags & RXON_CARD_DISABLED))
1250                 iwl_scan_cancel(priv);
1251
1252         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
1253              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
1254             (test_bit(STATUS_RF_KILL_SW, &status) !=
1255              test_bit(STATUS_RF_KILL_SW, &priv->status)))
1256                 queue_work(priv->workqueue, &priv->rf_kill);
1257         else
1258                 wake_up_interruptible(&priv->wait_command_queue);
1259 }
1260
1261 int iwl4965_set_pwr_src(struct iwl_priv *priv, enum iwl_pwr_src src)
1262 {
1263         int ret;
1264         unsigned long flags;
1265
1266         spin_lock_irqsave(&priv->lock, flags);
1267         ret = iwl_grab_nic_access(priv);
1268         if (ret)
1269                 goto err;
1270
1271         if (src == IWL_PWR_SRC_VAUX) {
1272                 u32 val;
1273                 ret = pci_read_config_dword(priv->pci_dev, PCI_CFG_POWER_SOURCE,
1274                                             &val);
1275
1276                 if (val & PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT)
1277                         iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1278                                                APMG_PS_CTRL_VAL_PWR_SRC_VAUX,
1279                                                ~APMG_PS_CTRL_MSK_PWR_SRC);
1280         } else {
1281                 iwl_set_bits_mask_prph(priv, APMG_PS_CTRL_REG,
1282                                        APMG_PS_CTRL_VAL_PWR_SRC_VMAIN,
1283                                        ~APMG_PS_CTRL_MSK_PWR_SRC);
1284         }
1285
1286         iwl_release_nic_access(priv);
1287 err:
1288         spin_unlock_irqrestore(&priv->lock, flags);
1289         return ret;
1290 }
1291
1292 /**
1293  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
1294  *
1295  * Setup the RX handlers for each of the reply types sent from the uCode
1296  * to the host.
1297  *
1298  * This function chains into the hardware specific files for them to setup
1299  * any hardware specific handlers as well.
1300  */
1301 static void iwl_setup_rx_handlers(struct iwl_priv *priv)
1302 {
1303         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
1304         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
1305         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
1306         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
1307             iwl4965_rx_spectrum_measure_notif;
1308         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
1309         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
1310             iwl4965_rx_pm_debug_statistics_notif;
1311         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
1312
1313         /*
1314          * The same handler is used for both the REPLY to a discrete
1315          * statistics request from the host as well as for the periodic
1316          * statistics notifications (after received beacons) from the uCode.
1317          */
1318         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl_rx_statistics;
1319         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl_rx_statistics;
1320
1321         iwl_setup_rx_scan_handlers(priv);
1322
1323         /* status change handler */
1324         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
1325
1326         priv->rx_handlers[MISSED_BEACONS_NOTIFICATION] =
1327             iwl_rx_missed_beacon_notif;
1328         /* Rx handlers */
1329         priv->rx_handlers[REPLY_RX_PHY_CMD] = iwl_rx_reply_rx_phy;
1330         priv->rx_handlers[REPLY_RX_MPDU_CMD] = iwl_rx_reply_rx;
1331         /* block ack */
1332         priv->rx_handlers[REPLY_COMPRESSED_BA] = iwl_rx_reply_compressed_ba;
1333         /* Set up hardware specific Rx handlers */
1334         priv->cfg->ops->lib->rx_handler_setup(priv);
1335 }
1336
1337 /*
1338  * this should be called while priv->lock is locked
1339 */
1340 static void __iwl_rx_replenish(struct iwl_priv *priv)
1341 {
1342         iwl_rx_allocate(priv);
1343         iwl_rx_queue_restock(priv);
1344 }
1345
1346
1347 /**
1348  * iwl_rx_handle - Main entry function for receiving responses from uCode
1349  *
1350  * Uses the priv->rx_handlers callback function array to invoke
1351  * the appropriate handlers, including command responses,
1352  * frame-received notifications, and other notifications.
1353  */
1354 void iwl_rx_handle(struct iwl_priv *priv)
1355 {
1356         struct iwl_rx_mem_buffer *rxb;
1357         struct iwl_rx_packet *pkt;
1358         struct iwl_rx_queue *rxq = &priv->rxq;
1359         u32 r, i;
1360         int reclaim;
1361         unsigned long flags;
1362         u8 fill_rx = 0;
1363         u32 count = 8;
1364
1365         /* uCode's read index (stored in shared DRAM) indicates the last Rx
1366          * buffer that the driver may process (last buffer filled by ucode). */
1367         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
1368         i = rxq->read;
1369
1370         /* Rx interrupt, but nothing sent from uCode */
1371         if (i == r)
1372                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
1373
1374         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
1375                 fill_rx = 1;
1376
1377         while (i != r) {
1378                 rxb = rxq->queue[i];
1379
1380                 /* If an RXB doesn't have a Rx queue slot associated with it,
1381                  * then a bug has been introduced in the queue refilling
1382                  * routines -- catch it here */
1383                 BUG_ON(rxb == NULL);
1384
1385                 rxq->queue[i] = NULL;
1386
1387                 dma_sync_single_range_for_cpu(
1388                                 &priv->pci_dev->dev, rxb->real_dma_addr,
1389                                 rxb->aligned_dma_addr - rxb->real_dma_addr,
1390                                 priv->hw_params.rx_buf_size,
1391                                 PCI_DMA_FROMDEVICE);
1392                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
1393
1394                 /* Reclaim a command buffer only if this packet is a response
1395                  *   to a (driver-originated) command.
1396                  * If the packet (e.g. Rx frame) originated from uCode,
1397                  *   there is no command buffer to reclaim.
1398                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
1399                  *   but apparently a few don't get set; catch them here. */
1400                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
1401                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
1402                         (pkt->hdr.cmd != REPLY_RX) &&
1403                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
1404                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
1405                         (pkt->hdr.cmd != REPLY_TX);
1406
1407                 /* Based on type of command response or notification,
1408                  *   handle those that need handling via function in
1409                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
1410                 if (priv->rx_handlers[pkt->hdr.cmd]) {
1411                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
1412                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
1413                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
1414                 } else {
1415                         /* No handling needed */
1416                         IWL_DEBUG(IWL_DL_RX,
1417                                 "r %d i %d No handler needed for %s, 0x%02x\n",
1418                                 r, i, get_cmd_string(pkt->hdr.cmd),
1419                                 pkt->hdr.cmd);
1420                 }
1421
1422                 if (reclaim) {
1423                         /* Invoke any callbacks, transfer the skb to caller, and
1424                          * fire off the (possibly) blocking iwl_send_cmd()
1425                          * as we reclaim the driver command queue */
1426                         if (rxb && rxb->skb)
1427                                 iwl_tx_cmd_complete(priv, rxb);
1428                         else
1429                                 IWL_WARNING("Claim null rxb?\n");
1430                 }
1431
1432                 /* For now we just don't re-use anything.  We can tweak this
1433                  * later to try and re-use notification packets and SKBs that
1434                  * fail to Rx correctly */
1435                 if (rxb->skb != NULL) {
1436                         priv->alloc_rxb_skb--;
1437                         dev_kfree_skb_any(rxb->skb);
1438                         rxb->skb = NULL;
1439                 }
1440
1441                 pci_unmap_single(priv->pci_dev, rxb->real_dma_addr,
1442                                  priv->hw_params.rx_buf_size + 256,
1443                                  PCI_DMA_FROMDEVICE);
1444                 spin_lock_irqsave(&rxq->lock, flags);
1445                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
1446                 spin_unlock_irqrestore(&rxq->lock, flags);
1447                 i = (i + 1) & RX_QUEUE_MASK;
1448                 /* If there are a lot of unused frames,
1449                  * restock the Rx queue so ucode wont assert. */
1450                 if (fill_rx) {
1451                         count++;
1452                         if (count >= 8) {
1453                                 priv->rxq.read = i;
1454                                 __iwl_rx_replenish(priv);
1455                                 count = 0;
1456                         }
1457                 }
1458         }
1459
1460         /* Backtrack one entry */
1461         priv->rxq.read = i;
1462         iwl_rx_queue_restock(priv);
1463 }
1464
1465 #ifdef CONFIG_IWLWIFI_DEBUG
1466 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
1467 {
1468         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
1469         DECLARE_MAC_BUF(mac);
1470
1471         IWL_DEBUG_RADIO("RX CONFIG:\n");
1472         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
1473         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
1474         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
1475         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
1476                         le32_to_cpu(rxon->filter_flags));
1477         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
1478         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
1479                         rxon->ofdm_basic_rates);
1480         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
1481         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
1482                         print_mac(mac, rxon->node_addr));
1483         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
1484                         print_mac(mac, rxon->bssid_addr));
1485         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
1486 }
1487 #endif
1488
1489 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
1490 {
1491         IWL_DEBUG_ISR("Enabling interrupts\n");
1492         set_bit(STATUS_INT_ENABLED, &priv->status);
1493         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
1494 }
1495
1496 /* call this function to flush any scheduled tasklet */
1497 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
1498 {
1499         /* wait to make sure we flush pedding tasklet*/
1500         synchronize_irq(priv->pci_dev->irq);
1501         tasklet_kill(&priv->irq_tasklet);
1502 }
1503
1504 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
1505 {
1506         clear_bit(STATUS_INT_ENABLED, &priv->status);
1507
1508         /* disable interrupts from uCode/NIC to host */
1509         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1510
1511         /* acknowledge/clear/reset any interrupts still pending
1512          * from uCode or flow handler (Rx/Tx DMA) */
1513         iwl_write32(priv, CSR_INT, 0xffffffff);
1514         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
1515         IWL_DEBUG_ISR("Disabled interrupts\n");
1516 }
1517
1518
1519 /**
1520  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
1521  */
1522 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
1523 {
1524         /* Set the FW error flag -- cleared on iwl4965_down */
1525         set_bit(STATUS_FW_ERROR, &priv->status);
1526
1527         /* Cancel currently queued command. */
1528         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
1529
1530 #ifdef CONFIG_IWLWIFI_DEBUG
1531         if (priv->debug_level & IWL_DL_FW_ERRORS) {
1532                 iwl_dump_nic_error_log(priv);
1533                 iwl_dump_nic_event_log(priv);
1534                 iwl4965_print_rx_config_cmd(priv);
1535         }
1536 #endif
1537
1538         wake_up_interruptible(&priv->wait_command_queue);
1539
1540         /* Keep the restart process from trying to send host
1541          * commands by clearing the INIT status bit */
1542         clear_bit(STATUS_READY, &priv->status);
1543
1544         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
1545                 IWL_DEBUG(IWL_DL_FW_ERRORS,
1546                           "Restarting adapter due to uCode error.\n");
1547
1548                 if (iwl_is_associated(priv)) {
1549                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
1550                                sizeof(priv->recovery_rxon));
1551                         priv->error_recovering = 1;
1552                 }
1553                 if (priv->cfg->mod_params->restart_fw)
1554                         queue_work(priv->workqueue, &priv->restart);
1555         }
1556 }
1557
1558 static void iwl4965_error_recovery(struct iwl_priv *priv)
1559 {
1560         unsigned long flags;
1561
1562         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
1563                sizeof(priv->staging_rxon));
1564         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
1565         iwl4965_commit_rxon(priv);
1566
1567         iwl_rxon_add_station(priv, priv->bssid, 1);
1568
1569         spin_lock_irqsave(&priv->lock, flags);
1570         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
1571         priv->error_recovering = 0;
1572         spin_unlock_irqrestore(&priv->lock, flags);
1573 }
1574
1575 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
1576 {
1577         u32 inta, handled = 0;
1578         u32 inta_fh;
1579         unsigned long flags;
1580 #ifdef CONFIG_IWLWIFI_DEBUG
1581         u32 inta_mask;
1582 #endif
1583
1584         spin_lock_irqsave(&priv->lock, flags);
1585
1586         /* Ack/clear/reset pending uCode interrupts.
1587          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
1588          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
1589         inta = iwl_read32(priv, CSR_INT);
1590         iwl_write32(priv, CSR_INT, inta);
1591
1592         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
1593          * Any new interrupts that happen after this, either while we're
1594          * in this tasklet, or later, will show up in next ISR/tasklet. */
1595         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1596         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
1597
1598 #ifdef CONFIG_IWLWIFI_DEBUG
1599         if (priv->debug_level & IWL_DL_ISR) {
1600                 /* just for debug */
1601                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1602                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1603                               inta, inta_mask, inta_fh);
1604         }
1605 #endif
1606
1607         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
1608          * atomic, make sure that inta covers all the interrupts that
1609          * we've discovered, even if FH interrupt came in just after
1610          * reading CSR_INT. */
1611         if (inta_fh & CSR49_FH_INT_RX_MASK)
1612                 inta |= CSR_INT_BIT_FH_RX;
1613         if (inta_fh & CSR49_FH_INT_TX_MASK)
1614                 inta |= CSR_INT_BIT_FH_TX;
1615
1616         /* Now service all interrupt bits discovered above. */
1617         if (inta & CSR_INT_BIT_HW_ERR) {
1618                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
1619
1620                 /* Tell the device to stop sending interrupts */
1621                 iwl4965_disable_interrupts(priv);
1622
1623                 iwl4965_irq_handle_error(priv);
1624
1625                 handled |= CSR_INT_BIT_HW_ERR;
1626
1627                 spin_unlock_irqrestore(&priv->lock, flags);
1628
1629                 return;
1630         }
1631
1632 #ifdef CONFIG_IWLWIFI_DEBUG
1633         if (priv->debug_level & (IWL_DL_ISR)) {
1634                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
1635                 if (inta & CSR_INT_BIT_SCD)
1636                         IWL_DEBUG_ISR("Scheduler finished to transmit "
1637                                       "the frame/frames.\n");
1638
1639                 /* Alive notification via Rx interrupt will do the real work */
1640                 if (inta & CSR_INT_BIT_ALIVE)
1641                         IWL_DEBUG_ISR("Alive interrupt\n");
1642         }
1643 #endif
1644         /* Safely ignore these bits for debug checks below */
1645         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
1646
1647         /* HW RF KILL switch toggled */
1648         if (inta & CSR_INT_BIT_RF_KILL) {
1649                 int hw_rf_kill = 0;
1650                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
1651                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
1652                         hw_rf_kill = 1;
1653
1654                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
1655                                 hw_rf_kill ? "disable radio":"enable radio");
1656
1657                 /* driver only loads ucode once setting the interface up.
1658                  * the driver as well won't allow loading if RFKILL is set
1659                  * therefore no need to restart the driver from this handler
1660                  */
1661                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status))
1662                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
1663
1664                 handled |= CSR_INT_BIT_RF_KILL;
1665         }
1666
1667         /* Chip got too hot and stopped itself */
1668         if (inta & CSR_INT_BIT_CT_KILL) {
1669                 IWL_ERROR("Microcode CT kill error detected.\n");
1670                 handled |= CSR_INT_BIT_CT_KILL;
1671         }
1672
1673         /* Error detected by uCode */
1674         if (inta & CSR_INT_BIT_SW_ERR) {
1675                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
1676                           inta);
1677                 iwl4965_irq_handle_error(priv);
1678                 handled |= CSR_INT_BIT_SW_ERR;
1679         }
1680
1681         /* uCode wakes up after power-down sleep */
1682         if (inta & CSR_INT_BIT_WAKEUP) {
1683                 IWL_DEBUG_ISR("Wakeup interrupt\n");
1684                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
1685                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
1686                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
1687                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
1688                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
1689                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
1690                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
1691
1692                 handled |= CSR_INT_BIT_WAKEUP;
1693         }
1694
1695         /* All uCode command responses, including Tx command responses,
1696          * Rx "responses" (frame-received notification), and other
1697          * notifications from uCode come through here*/
1698         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
1699                 iwl_rx_handle(priv);
1700                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
1701         }
1702
1703         if (inta & CSR_INT_BIT_FH_TX) {
1704                 IWL_DEBUG_ISR("Tx interrupt\n");
1705                 handled |= CSR_INT_BIT_FH_TX;
1706                 /* FH finished to write, send event */
1707                 priv->ucode_write_complete = 1;
1708                 wake_up_interruptible(&priv->wait_command_queue);
1709         }
1710
1711         if (inta & ~handled)
1712                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
1713
1714         if (inta & ~CSR_INI_SET_MASK) {
1715                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
1716                          inta & ~CSR_INI_SET_MASK);
1717                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
1718         }
1719
1720         /* Re-enable all interrupts */
1721         /* only Re-enable if diabled by irq */
1722         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1723                 iwl4965_enable_interrupts(priv);
1724
1725 #ifdef CONFIG_IWLWIFI_DEBUG
1726         if (priv->debug_level & (IWL_DL_ISR)) {
1727                 inta = iwl_read32(priv, CSR_INT);
1728                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
1729                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1730                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
1731                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
1732         }
1733 #endif
1734         spin_unlock_irqrestore(&priv->lock, flags);
1735 }
1736
1737 static irqreturn_t iwl4965_isr(int irq, void *data)
1738 {
1739         struct iwl_priv *priv = data;
1740         u32 inta, inta_mask;
1741         u32 inta_fh;
1742         if (!priv)
1743                 return IRQ_NONE;
1744
1745         spin_lock(&priv->lock);
1746
1747         /* Disable (but don't clear!) interrupts here to avoid
1748          *    back-to-back ISRs and sporadic interrupts from our NIC.
1749          * If we have something to service, the tasklet will re-enable ints.
1750          * If we *don't* have something, we'll re-enable before leaving here. */
1751         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
1752         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
1753
1754         /* Discover which interrupts are active/pending */
1755         inta = iwl_read32(priv, CSR_INT);
1756         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
1757
1758         /* Ignore interrupt if there's nothing in NIC to service.
1759          * This may be due to IRQ shared with another device,
1760          * or due to sporadic interrupts thrown from our NIC. */
1761         if (!inta && !inta_fh) {
1762                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
1763                 goto none;
1764         }
1765
1766         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
1767                 /* Hardware disappeared. It might have already raised
1768                  * an interrupt */
1769                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
1770                 goto unplugged;
1771         }
1772
1773         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
1774                       inta, inta_mask, inta_fh);
1775
1776         inta &= ~CSR_INT_BIT_SCD;
1777
1778         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
1779         if (likely(inta || inta_fh))
1780                 tasklet_schedule(&priv->irq_tasklet);
1781
1782  unplugged:
1783         spin_unlock(&priv->lock);
1784         return IRQ_HANDLED;
1785
1786  none:
1787         /* re-enable interrupts here since we don't have anything to service. */
1788         /* only Re-enable if diabled by irq */
1789         if (test_bit(STATUS_INT_ENABLED, &priv->status))
1790                 iwl4965_enable_interrupts(priv);
1791         spin_unlock(&priv->lock);
1792         return IRQ_NONE;
1793 }
1794
1795 /******************************************************************************
1796  *
1797  * uCode download functions
1798  *
1799  ******************************************************************************/
1800
1801 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
1802 {
1803         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
1804         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
1805         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1806         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
1807         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1808         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
1809 }
1810
1811 static void iwl4965_nic_start(struct iwl_priv *priv)
1812 {
1813         /* Remove all resets to allow NIC to operate */
1814         iwl_write32(priv, CSR_RESET, 0);
1815 }
1816
1817
1818 /**
1819  * iwl4965_read_ucode - Read uCode images from disk file.
1820  *
1821  * Copy into buffers for card to fetch via bus-mastering
1822  */
1823 static int iwl4965_read_ucode(struct iwl_priv *priv)
1824 {
1825         struct iwl_ucode *ucode;
1826         int ret;
1827         const struct firmware *ucode_raw;
1828         const char *name = priv->cfg->fw_name;
1829         u8 *src;
1830         size_t len;
1831         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
1832
1833         /* Ask kernel firmware_class module to get the boot firmware off disk.
1834          * request_firmware() is synchronous, file is in memory on return. */
1835         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
1836         if (ret < 0) {
1837                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
1838                                         name, ret);
1839                 goto error;
1840         }
1841
1842         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
1843                        name, ucode_raw->size);
1844
1845         /* Make sure that we got at least our header! */
1846         if (ucode_raw->size < sizeof(*ucode)) {
1847                 IWL_ERROR("File size way too small!\n");
1848                 ret = -EINVAL;
1849                 goto err_release;
1850         }
1851
1852         /* Data from ucode file:  header followed by uCode images */
1853         ucode = (void *)ucode_raw->data;
1854
1855         ver = le32_to_cpu(ucode->ver);
1856         inst_size = le32_to_cpu(ucode->inst_size);
1857         data_size = le32_to_cpu(ucode->data_size);
1858         init_size = le32_to_cpu(ucode->init_size);
1859         init_data_size = le32_to_cpu(ucode->init_data_size);
1860         boot_size = le32_to_cpu(ucode->boot_size);
1861
1862         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
1863         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
1864                        inst_size);
1865         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
1866                        data_size);
1867         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
1868                        init_size);
1869         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
1870                        init_data_size);
1871         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
1872                        boot_size);
1873
1874         /* Verify size of file vs. image size info in file's header */
1875         if (ucode_raw->size < sizeof(*ucode) +
1876                 inst_size + data_size + init_size +
1877                 init_data_size + boot_size) {
1878
1879                 IWL_DEBUG_INFO("uCode file size %d too small\n",
1880                                (int)ucode_raw->size);
1881                 ret = -EINVAL;
1882                 goto err_release;
1883         }
1884
1885         /* Verify that uCode images will fit in card's SRAM */
1886         if (inst_size > priv->hw_params.max_inst_size) {
1887                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
1888                                inst_size);
1889                 ret = -EINVAL;
1890                 goto err_release;
1891         }
1892
1893         if (data_size > priv->hw_params.max_data_size) {
1894                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
1895                                 data_size);
1896                 ret = -EINVAL;
1897                 goto err_release;
1898         }
1899         if (init_size > priv->hw_params.max_inst_size) {
1900                 IWL_DEBUG_INFO
1901                     ("uCode init instr len %d too large to fit in\n",
1902                       init_size);
1903                 ret = -EINVAL;
1904                 goto err_release;
1905         }
1906         if (init_data_size > priv->hw_params.max_data_size) {
1907                 IWL_DEBUG_INFO
1908                     ("uCode init data len %d too large to fit in\n",
1909                       init_data_size);
1910                 ret = -EINVAL;
1911                 goto err_release;
1912         }
1913         if (boot_size > priv->hw_params.max_bsm_size) {
1914                 IWL_DEBUG_INFO
1915                     ("uCode boot instr len %d too large to fit in\n",
1916                       boot_size);
1917                 ret = -EINVAL;
1918                 goto err_release;
1919         }
1920
1921         /* Allocate ucode buffers for card's bus-master loading ... */
1922
1923         /* Runtime instructions and 2 copies of data:
1924          * 1) unmodified from disk
1925          * 2) backup cache for save/restore during power-downs */
1926         priv->ucode_code.len = inst_size;
1927         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
1928
1929         priv->ucode_data.len = data_size;
1930         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
1931
1932         priv->ucode_data_backup.len = data_size;
1933         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
1934
1935         /* Initialization instructions and data */
1936         if (init_size && init_data_size) {
1937                 priv->ucode_init.len = init_size;
1938                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
1939
1940                 priv->ucode_init_data.len = init_data_size;
1941                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
1942
1943                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
1944                         goto err_pci_alloc;
1945         }
1946
1947         /* Bootstrap (instructions only, no data) */
1948         if (boot_size) {
1949                 priv->ucode_boot.len = boot_size;
1950                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
1951
1952                 if (!priv->ucode_boot.v_addr)
1953                         goto err_pci_alloc;
1954         }
1955
1956         /* Copy images into buffers for card's bus-master reads ... */
1957
1958         /* Runtime instructions (first block of data in file) */
1959         src = &ucode->data[0];
1960         len = priv->ucode_code.len;
1961         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
1962         memcpy(priv->ucode_code.v_addr, src, len);
1963         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
1964                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
1965
1966         /* Runtime data (2nd block)
1967          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
1968         src = &ucode->data[inst_size];
1969         len = priv->ucode_data.len;
1970         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
1971         memcpy(priv->ucode_data.v_addr, src, len);
1972         memcpy(priv->ucode_data_backup.v_addr, src, len);
1973
1974         /* Initialization instructions (3rd block) */
1975         if (init_size) {
1976                 src = &ucode->data[inst_size + data_size];
1977                 len = priv->ucode_init.len;
1978                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
1979                                 len);
1980                 memcpy(priv->ucode_init.v_addr, src, len);
1981         }
1982
1983         /* Initialization data (4th block) */
1984         if (init_data_size) {
1985                 src = &ucode->data[inst_size + data_size + init_size];
1986                 len = priv->ucode_init_data.len;
1987                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
1988                                len);
1989                 memcpy(priv->ucode_init_data.v_addr, src, len);
1990         }
1991
1992         /* Bootstrap instructions (5th block) */
1993         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
1994         len = priv->ucode_boot.len;
1995         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
1996         memcpy(priv->ucode_boot.v_addr, src, len);
1997
1998         /* We have our copies now, allow OS release its copies */
1999         release_firmware(ucode_raw);
2000         return 0;
2001
2002  err_pci_alloc:
2003         IWL_ERROR("failed to allocate pci memory\n");
2004         ret = -ENOMEM;
2005         iwl4965_dealloc_ucode_pci(priv);
2006
2007  err_release:
2008         release_firmware(ucode_raw);
2009
2010  error:
2011         return ret;
2012 }
2013
2014 /**
2015  * iwl_alive_start - called after REPLY_ALIVE notification received
2016  *                   from protocol/runtime uCode (initialization uCode's
2017  *                   Alive gets handled by iwl_init_alive_start()).
2018  */
2019 static void iwl_alive_start(struct iwl_priv *priv)
2020 {
2021         int ret = 0;
2022
2023         IWL_DEBUG_INFO("Runtime Alive received.\n");
2024
2025         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
2026                 /* We had an error bringing up the hardware, so take it
2027                  * all the way back down so we can try again */
2028                 IWL_DEBUG_INFO("Alive failed.\n");
2029                 goto restart;
2030         }
2031
2032         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
2033          * This is a paranoid check, because we would not have gotten the
2034          * "runtime" alive if code weren't properly loaded.  */
2035         if (iwl_verify_ucode(priv)) {
2036                 /* Runtime instruction load was bad;
2037                  * take it all the way back down so we can try again */
2038                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
2039                 goto restart;
2040         }
2041
2042         iwl_clear_stations_table(priv);
2043         ret = priv->cfg->ops->lib->alive_notify(priv);
2044         if (ret) {
2045                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
2046                             ret);
2047                 goto restart;
2048         }
2049
2050         /* After the ALIVE response, we can send host commands to 4965 uCode */
2051         set_bit(STATUS_ALIVE, &priv->status);
2052
2053         if (iwl_is_rfkill(priv))
2054                 return;
2055
2056         ieee80211_wake_queues(priv->hw);
2057
2058         priv->active_rate = priv->rates_mask;
2059         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
2060
2061         if (iwl_is_associated(priv)) {
2062                 struct iwl_rxon_cmd *active_rxon =
2063                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
2064
2065                 memcpy(&priv->staging_rxon, &priv->active_rxon,
2066                        sizeof(priv->staging_rxon));
2067                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2068         } else {
2069                 /* Initialize our rx_config data */
2070                 iwl4965_connection_init_rx_config(priv);
2071                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
2072         }
2073
2074         /* Configure Bluetooth device coexistence support */
2075         iwl4965_send_bt_config(priv);
2076
2077         iwl_reset_run_time_calib(priv);
2078
2079         /* Configure the adapter for unassociated operation */
2080         iwl4965_commit_rxon(priv);
2081
2082         /* At this point, the NIC is initialized and operational */
2083         iwl_rf_kill_ct_config(priv);
2084
2085         iwl_leds_register(priv);
2086
2087         IWL_DEBUG_INFO("ALIVE processing complete.\n");
2088         set_bit(STATUS_READY, &priv->status);
2089         wake_up_interruptible(&priv->wait_command_queue);
2090
2091         if (priv->error_recovering)
2092                 iwl4965_error_recovery(priv);
2093
2094         iwl_power_update_mode(priv, 1);
2095
2096         if (test_and_clear_bit(STATUS_MODE_PENDING, &priv->status))
2097                 iwl4965_set_mode(priv, priv->iw_mode);
2098
2099         return;
2100
2101  restart:
2102         queue_work(priv->workqueue, &priv->restart);
2103 }
2104
2105 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2106
2107 static void __iwl4965_down(struct iwl_priv *priv)
2108 {
2109         unsigned long flags;
2110         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
2111
2112         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
2113
2114         if (!exit_pending)
2115                 set_bit(STATUS_EXIT_PENDING, &priv->status);
2116
2117         iwl_leds_unregister(priv);
2118
2119         iwl_clear_stations_table(priv);
2120
2121         /* Unblock any waiting calls */
2122         wake_up_interruptible_all(&priv->wait_command_queue);
2123
2124         /* Wipe out the EXIT_PENDING status bit if we are not actually
2125          * exiting the module */
2126         if (!exit_pending)
2127                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2128
2129         /* stop and reset the on-board processor */
2130         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
2131
2132         /* tell the device to stop sending interrupts */
2133         spin_lock_irqsave(&priv->lock, flags);
2134         iwl4965_disable_interrupts(priv);
2135         spin_unlock_irqrestore(&priv->lock, flags);
2136         iwl_synchronize_irq(priv);
2137
2138         if (priv->mac80211_registered)
2139                 ieee80211_stop_queues(priv->hw);
2140
2141         /* If we have not previously called iwl4965_init() then
2142          * clear all bits but the RF Kill and SUSPEND bits and return */
2143         if (!iwl_is_init(priv)) {
2144                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2145                                         STATUS_RF_KILL_HW |
2146                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2147                                         STATUS_RF_KILL_SW |
2148                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2149                                         STATUS_GEO_CONFIGURED |
2150                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2151                                         STATUS_IN_SUSPEND |
2152                                test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2153                                         STATUS_EXIT_PENDING;
2154                 goto exit;
2155         }
2156
2157         /* ...otherwise clear out all the status bits but the RF Kill and
2158          * SUSPEND bits and continue taking the NIC down. */
2159         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2160                                 STATUS_RF_KILL_HW |
2161                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
2162                                 STATUS_RF_KILL_SW |
2163                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2164                                 STATUS_GEO_CONFIGURED |
2165                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
2166                                 STATUS_IN_SUSPEND |
2167                         test_bit(STATUS_FW_ERROR, &priv->status) <<
2168                                 STATUS_FW_ERROR |
2169                        test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2170                                 STATUS_EXIT_PENDING;
2171
2172         spin_lock_irqsave(&priv->lock, flags);
2173         iwl_clear_bit(priv, CSR_GP_CNTRL,
2174                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
2175         spin_unlock_irqrestore(&priv->lock, flags);
2176
2177         iwl_txq_ctx_stop(priv);
2178         iwl_rxq_stop(priv);
2179
2180         spin_lock_irqsave(&priv->lock, flags);
2181         if (!iwl_grab_nic_access(priv)) {
2182                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
2183                                          APMG_CLK_VAL_DMA_CLK_RQT);
2184                 iwl_release_nic_access(priv);
2185         }
2186         spin_unlock_irqrestore(&priv->lock, flags);
2187
2188         udelay(5);
2189
2190         /* FIXME: apm_ops.suspend(priv) */
2191         if (exit_pending || test_bit(STATUS_IN_SUSPEND, &priv->status))
2192                 priv->cfg->ops->lib->apm_ops.stop(priv);
2193         else
2194                 priv->cfg->ops->lib->apm_ops.reset(priv);
2195         priv->cfg->ops->lib->free_shared_mem(priv);
2196
2197  exit:
2198         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
2199
2200         if (priv->ibss_beacon)
2201                 dev_kfree_skb(priv->ibss_beacon);
2202         priv->ibss_beacon = NULL;
2203
2204         /* clear out any free frames */
2205         iwl_clear_free_frames(priv);
2206 }
2207
2208 static void iwl4965_down(struct iwl_priv *priv)
2209 {
2210         mutex_lock(&priv->mutex);
2211         __iwl4965_down(priv);
2212         mutex_unlock(&priv->mutex);
2213
2214         iwl_cancel_deferred_work(priv);
2215 }
2216
2217 #define MAX_HW_RESTARTS 5
2218
2219 static int __iwl4965_up(struct iwl_priv *priv)
2220 {
2221         int i;
2222         int ret;
2223
2224         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2225                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
2226                 return -EIO;
2227         }
2228
2229         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
2230                 IWL_ERROR("ucode not available for device bringup\n");
2231                 return -EIO;
2232         }
2233
2234         /* If platform's RF_KILL switch is NOT set to KILL */
2235         if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
2236                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2237         else
2238                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2239
2240         if (iwl_is_rfkill(priv)) {
2241                 iwl4965_enable_interrupts(priv);
2242                 IWL_WARNING("Radio disabled by %s RF Kill switch\n",
2243                     test_bit(STATUS_RF_KILL_HW, &priv->status) ? "HW" : "SW");
2244                 return 0;
2245         }
2246
2247         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2248
2249         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
2250         if (ret) {
2251                 IWL_ERROR("Unable to allocate shared memory\n");
2252                 return ret;
2253         }
2254
2255         ret = iwl_hw_nic_init(priv);
2256         if (ret) {
2257                 IWL_ERROR("Unable to init nic\n");
2258                 return ret;
2259         }
2260
2261         /* make sure rfkill handshake bits are cleared */
2262         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2263         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2264                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2265
2266         /* clear (again), then enable host interrupts */
2267         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2268         iwl4965_enable_interrupts(priv);
2269
2270         /* really make sure rfkill handshake bits are cleared */
2271         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2272         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
2273
2274         /* Copy original ucode data image from disk into backup cache.
2275          * This will be used to initialize the on-board processor's
2276          * data SRAM for a clean start when the runtime program first loads. */
2277         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
2278                priv->ucode_data.len);
2279
2280         for (i = 0; i < MAX_HW_RESTARTS; i++) {
2281
2282                 iwl_clear_stations_table(priv);
2283
2284                 /* load bootstrap state machine,
2285                  * load bootstrap program into processor's memory,
2286                  * prepare to load the "initialize" uCode */
2287                 ret = priv->cfg->ops->lib->load_ucode(priv);
2288
2289                 if (ret) {
2290                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
2291                         continue;
2292                 }
2293
2294                 /* Clear out the uCode error bit if it is set */
2295                 clear_bit(STATUS_FW_ERROR, &priv->status);
2296
2297                 /* start card; "initialize" will load runtime ucode */
2298                 iwl4965_nic_start(priv);
2299
2300                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
2301
2302                 return 0;
2303         }
2304
2305         set_bit(STATUS_EXIT_PENDING, &priv->status);
2306         __iwl4965_down(priv);
2307         clear_bit(STATUS_EXIT_PENDING, &priv->status);
2308
2309         /* tried to restart and config the device for as long as our
2310          * patience could withstand */
2311         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
2312         return -EIO;
2313 }
2314
2315
2316 /*****************************************************************************
2317  *
2318  * Workqueue callbacks
2319  *
2320  *****************************************************************************/
2321
2322 static void iwl_bg_init_alive_start(struct work_struct *data)
2323 {
2324         struct iwl_priv *priv =
2325             container_of(data, struct iwl_priv, init_alive_start.work);
2326
2327         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2328                 return;
2329
2330         mutex_lock(&priv->mutex);
2331         priv->cfg->ops->lib->init_alive_start(priv);
2332         mutex_unlock(&priv->mutex);
2333 }
2334
2335 static void iwl_bg_alive_start(struct work_struct *data)
2336 {
2337         struct iwl_priv *priv =
2338             container_of(data, struct iwl_priv, alive_start.work);
2339
2340         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2341                 return;
2342
2343         mutex_lock(&priv->mutex);
2344         iwl_alive_start(priv);
2345         mutex_unlock(&priv->mutex);
2346 }
2347
2348 static void iwl4965_bg_rf_kill(struct work_struct *work)
2349 {
2350         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
2351
2352         wake_up_interruptible(&priv->wait_command_queue);
2353
2354         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2355                 return;
2356
2357         mutex_lock(&priv->mutex);
2358
2359         if (!iwl_is_rfkill(priv)) {
2360                 IWL_DEBUG(IWL_DL_RF_KILL,
2361                           "HW and/or SW RF Kill no longer active, restarting "
2362                           "device\n");
2363                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
2364                         queue_work(priv->workqueue, &priv->restart);
2365         } else {
2366                 /* make sure mac80211 stop sending Tx frame */
2367                 if (priv->mac80211_registered)
2368                         ieee80211_stop_queues(priv->hw);
2369
2370                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
2371                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
2372                                           "disabled by SW switch\n");
2373                 else
2374                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
2375                                     "Kill switch must be turned off for "
2376                                     "wireless networking to work.\n");
2377         }
2378         mutex_unlock(&priv->mutex);
2379         iwl_rfkill_set_hw_state(priv);
2380 }
2381
2382 static void iwl4965_bg_set_monitor(struct work_struct *work)
2383 {
2384         struct iwl_priv *priv = container_of(work,
2385                                 struct iwl_priv, set_monitor);
2386         int ret;
2387
2388         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
2389
2390         mutex_lock(&priv->mutex);
2391
2392         ret = iwl4965_set_mode(priv, NL80211_IFTYPE_MONITOR);
2393
2394         if (ret) {
2395                 if (ret == -EAGAIN)
2396                         IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
2397                 else
2398                         IWL_ERROR("iwl4965_set_mode() failed ret = %d\n", ret);
2399         }
2400
2401         mutex_unlock(&priv->mutex);
2402 }
2403
2404 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2405 {
2406         struct iwl_priv *priv = container_of(work, struct iwl_priv,
2407                         run_time_calib_work);
2408
2409         mutex_lock(&priv->mutex);
2410
2411         if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2412             test_bit(STATUS_SCANNING, &priv->status)) {
2413                 mutex_unlock(&priv->mutex);
2414                 return;
2415         }
2416
2417         if (priv->start_calib) {
2418                 iwl_chain_noise_calibration(priv, &priv->statistics);
2419
2420                 iwl_sensitivity_calibration(priv, &priv->statistics);
2421         }
2422
2423         mutex_unlock(&priv->mutex);
2424         return;
2425 }
2426
2427 static void iwl4965_bg_up(struct work_struct *data)
2428 {
2429         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
2430
2431         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2432                 return;
2433
2434         mutex_lock(&priv->mutex);
2435         __iwl4965_up(priv);
2436         mutex_unlock(&priv->mutex);
2437         iwl_rfkill_set_hw_state(priv);
2438 }
2439
2440 static void iwl4965_bg_restart(struct work_struct *data)
2441 {
2442         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2443
2444         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2445                 return;
2446
2447         iwl4965_down(priv);
2448         queue_work(priv->workqueue, &priv->up);
2449 }
2450
2451 static void iwl4965_bg_rx_replenish(struct work_struct *data)
2452 {
2453         struct iwl_priv *priv =
2454             container_of(data, struct iwl_priv, rx_replenish);
2455
2456         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2457                 return;
2458
2459         mutex_lock(&priv->mutex);
2460         iwl_rx_replenish(priv);
2461         mutex_unlock(&priv->mutex);
2462 }
2463
2464 #define IWL_DELAY_NEXT_SCAN (HZ*2)
2465
2466 static void iwl4965_post_associate(struct iwl_priv *priv)
2467 {
2468         struct ieee80211_conf *conf = NULL;
2469         int ret = 0;
2470         DECLARE_MAC_BUF(mac);
2471         unsigned long flags;
2472
2473         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2474                 IWL_ERROR("%s Should not be called in AP mode\n", __func__);
2475                 return;
2476         }
2477
2478         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
2479                         priv->assoc_id,
2480                         print_mac(mac, priv->active_rxon.bssid_addr));
2481
2482
2483         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2484                 return;
2485
2486
2487         if (!priv->vif || !priv->is_open)
2488                 return;
2489
2490         iwl_power_cancel_timeout(priv);
2491         iwl_scan_cancel_timeout(priv, 200);
2492
2493         conf = ieee80211_get_hw_conf(priv->hw);
2494
2495         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2496         iwl4965_commit_rxon(priv);
2497
2498         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2499         iwl4965_setup_rxon_timing(priv);
2500         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2501                               sizeof(priv->rxon_timing), &priv->rxon_timing);
2502         if (ret)
2503                 IWL_WARNING("REPLY_RXON_TIMING failed - "
2504                             "Attempting to continue.\n");
2505
2506         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2507
2508         iwl_set_rxon_ht(priv, &priv->current_ht_config);
2509
2510         iwl_set_rxon_chain(priv);
2511         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2512
2513         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
2514                         priv->assoc_id, priv->beacon_int);
2515
2516         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2517                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
2518         else
2519                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
2520
2521         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2522                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
2523                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
2524                 else
2525                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2526
2527                 if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2528                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
2529
2530         }
2531
2532         iwl4965_commit_rxon(priv);
2533
2534         switch (priv->iw_mode) {
2535         case NL80211_IFTYPE_STATION:
2536                 break;
2537
2538         case NL80211_IFTYPE_ADHOC:
2539
2540                 /* assume default assoc id */
2541                 priv->assoc_id = 1;
2542
2543                 iwl_rxon_add_station(priv, priv->bssid, 0);
2544                 iwl4965_send_beacon_cmd(priv);
2545
2546                 break;
2547
2548         default:
2549                 IWL_ERROR("%s Should not be called in %d mode\n",
2550                           __func__, priv->iw_mode);
2551                 break;
2552         }
2553
2554         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2555                 priv->assoc_station_added = 1;
2556
2557         spin_lock_irqsave(&priv->lock, flags);
2558         iwl_activate_qos(priv, 0);
2559         spin_unlock_irqrestore(&priv->lock, flags);
2560
2561         /* the chain noise calibration will enabled PM upon completion
2562          * If chain noise has already been run, then we need to enable
2563          * power management here */
2564         if (priv->chain_noise_data.state == IWL_CHAIN_NOISE_DONE)
2565                 iwl_power_enable_management(priv);
2566
2567         /* Enable Rx differential gain and sensitivity calibrations */
2568         iwl_chain_noise_reset(priv);
2569         priv->start_calib = 1;
2570
2571 }
2572
2573 /*****************************************************************************
2574  *
2575  * mac80211 entry point functions
2576  *
2577  *****************************************************************************/
2578
2579 #define UCODE_READY_TIMEOUT     (4 * HZ)
2580
2581 static int iwl4965_mac_start(struct ieee80211_hw *hw)
2582 {
2583         struct iwl_priv *priv = hw->priv;
2584         int ret;
2585         u16 pci_cmd;
2586
2587         IWL_DEBUG_MAC80211("enter\n");
2588
2589         if (pci_enable_device(priv->pci_dev)) {
2590                 IWL_ERROR("Fail to pci_enable_device\n");
2591                 return -ENODEV;
2592         }
2593         pci_restore_state(priv->pci_dev);
2594         pci_enable_msi(priv->pci_dev);
2595
2596         /* enable interrupts if needed: hw bug w/a */
2597         pci_read_config_word(priv->pci_dev, PCI_COMMAND, &pci_cmd);
2598         if (pci_cmd & PCI_COMMAND_INTX_DISABLE) {
2599                 pci_cmd &= ~PCI_COMMAND_INTX_DISABLE;
2600                 pci_write_config_word(priv->pci_dev, PCI_COMMAND, pci_cmd);
2601         }
2602
2603         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
2604                           DRV_NAME, priv);
2605         if (ret) {
2606                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
2607                 goto out_disable_msi;
2608         }
2609
2610         /* we should be verifying the device is ready to be opened */
2611         mutex_lock(&priv->mutex);
2612
2613         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
2614         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
2615          * ucode filename and max sizes are card-specific. */
2616
2617         if (!priv->ucode_code.len) {
2618                 ret = iwl4965_read_ucode(priv);
2619                 if (ret) {
2620                         IWL_ERROR("Could not read microcode: %d\n", ret);
2621                         mutex_unlock(&priv->mutex);
2622                         goto out_release_irq;
2623                 }
2624         }
2625
2626         ret = __iwl4965_up(priv);
2627
2628         mutex_unlock(&priv->mutex);
2629
2630         iwl_rfkill_set_hw_state(priv);
2631
2632         if (ret)
2633                 goto out_release_irq;
2634
2635         if (iwl_is_rfkill(priv))
2636                 goto out;
2637
2638         IWL_DEBUG_INFO("Start UP work done.\n");
2639
2640         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
2641                 return 0;
2642
2643         /* Wait for START_ALIVE from Run Time ucode. Otherwise callbacks from
2644          * mac80211 will not be run successfully. */
2645         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
2646                         test_bit(STATUS_READY, &priv->status),
2647                         UCODE_READY_TIMEOUT);
2648         if (!ret) {
2649                 if (!test_bit(STATUS_READY, &priv->status)) {
2650                         IWL_ERROR("START_ALIVE timeout after %dms.\n",
2651                                 jiffies_to_msecs(UCODE_READY_TIMEOUT));
2652                         ret = -ETIMEDOUT;
2653                         goto out_release_irq;
2654                 }
2655         }
2656
2657 out:
2658         priv->is_open = 1;
2659         IWL_DEBUG_MAC80211("leave\n");
2660         return 0;
2661
2662 out_release_irq:
2663         free_irq(priv->pci_dev->irq, priv);
2664 out_disable_msi:
2665         pci_disable_msi(priv->pci_dev);
2666         pci_disable_device(priv->pci_dev);
2667         priv->is_open = 0;
2668         IWL_DEBUG_MAC80211("leave - failed\n");
2669         return ret;
2670 }
2671
2672 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
2673 {
2674         struct iwl_priv *priv = hw->priv;
2675
2676         IWL_DEBUG_MAC80211("enter\n");
2677
2678         if (!priv->is_open) {
2679                 IWL_DEBUG_MAC80211("leave - skip\n");
2680                 return;
2681         }
2682
2683         priv->is_open = 0;
2684
2685         if (iwl_is_ready_rf(priv)) {
2686                 /* stop mac, cancel any scan request and clear
2687                  * RXON_FILTER_ASSOC_MSK BIT
2688                  */
2689                 mutex_lock(&priv->mutex);
2690                 iwl_scan_cancel_timeout(priv, 100);
2691                 mutex_unlock(&priv->mutex);
2692         }
2693
2694         iwl4965_down(priv);
2695
2696         flush_workqueue(priv->workqueue);
2697         free_irq(priv->pci_dev->irq, priv);
2698         pci_disable_msi(priv->pci_dev);
2699         pci_save_state(priv->pci_dev);
2700         pci_disable_device(priv->pci_dev);
2701
2702         IWL_DEBUG_MAC80211("leave\n");
2703 }
2704
2705 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2706 {
2707         struct iwl_priv *priv = hw->priv;
2708
2709         IWL_DEBUG_MACDUMP("enter\n");
2710
2711         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2712                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2713
2714         if (iwl_tx_skb(priv, skb))
2715                 dev_kfree_skb_any(skb);
2716
2717         IWL_DEBUG_MACDUMP("leave\n");
2718         return 0;
2719 }
2720
2721 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
2722                                  struct ieee80211_if_init_conf *conf)
2723 {
2724         struct iwl_priv *priv = hw->priv;
2725         unsigned long flags;
2726         DECLARE_MAC_BUF(mac);
2727
2728         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
2729
2730         if (priv->vif) {
2731                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
2732                 return -EOPNOTSUPP;
2733         }
2734
2735         spin_lock_irqsave(&priv->lock, flags);
2736         priv->vif = conf->vif;
2737
2738         spin_unlock_irqrestore(&priv->lock, flags);
2739
2740         mutex_lock(&priv->mutex);
2741
2742         if (conf->mac_addr) {
2743                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
2744                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
2745         }
2746
2747         if (iwl4965_set_mode(priv, conf->type) == -EAGAIN)
2748                 /* we are not ready, will run again when ready */
2749                 set_bit(STATUS_MODE_PENDING, &priv->status);
2750
2751         mutex_unlock(&priv->mutex);
2752
2753         IWL_DEBUG_MAC80211("leave\n");
2754         return 0;
2755 }
2756
2757 /**
2758  * iwl4965_mac_config - mac80211 config callback
2759  *
2760  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
2761  * be set inappropriately and the driver currently sets the hardware up to
2762  * use it whenever needed.
2763  */
2764 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
2765 {
2766         struct iwl_priv *priv = hw->priv;
2767         const struct iwl_channel_info *ch_info;
2768         unsigned long flags;
2769         int ret = 0;
2770         u16 channel;
2771
2772         mutex_lock(&priv->mutex);
2773         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
2774
2775         if (conf->radio_enabled && iwl_radio_kill_sw_enable_radio(priv)) {
2776                 IWL_DEBUG_MAC80211("leave - RF-KILL - waiting for uCode\n");
2777                 goto out;
2778         }
2779
2780         if (!conf->radio_enabled)
2781                 iwl_radio_kill_sw_disable_radio(priv);
2782
2783         if (!iwl_is_ready(priv)) {
2784                 IWL_DEBUG_MAC80211("leave - not ready\n");
2785                 ret = -EIO;
2786                 goto out;
2787         }
2788
2789         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
2790                      test_bit(STATUS_SCANNING, &priv->status))) {
2791                 IWL_DEBUG_MAC80211("leave - scanning\n");
2792                 mutex_unlock(&priv->mutex);
2793                 return 0;
2794         }
2795
2796         channel = ieee80211_frequency_to_channel(conf->channel->center_freq);
2797         ch_info = iwl_get_channel_info(priv, conf->channel->band, channel);
2798         if (!is_channel_valid(ch_info)) {
2799                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
2800                 ret = -EINVAL;
2801                 goto out;
2802         }
2803
2804         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2805             !is_channel_ibss(ch_info)) {
2806                 IWL_ERROR("channel %d in band %d not IBSS channel\n",
2807                         conf->channel->hw_value, conf->channel->band);
2808                 ret = -EINVAL;
2809                 goto out;
2810         }
2811
2812         spin_lock_irqsave(&priv->lock, flags);
2813
2814
2815         /* if we are switching from ht to 2.4 clear flags
2816          * from any ht related info since 2.4 does not
2817          * support ht */
2818         if ((le16_to_cpu(priv->staging_rxon.channel) != channel)
2819 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2820             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
2821 #endif
2822         )
2823                 priv->staging_rxon.flags = 0;
2824
2825         iwl_set_rxon_channel(priv, conf->channel);
2826
2827         iwl_set_flags_for_band(priv, conf->channel->band);
2828
2829         /* The list of supported rates and rate mask can be different
2830          * for each band; since the band may have changed, reset
2831          * the rate mask to what mac80211 lists */
2832         iwl4965_set_rate(priv);
2833
2834         spin_unlock_irqrestore(&priv->lock, flags);
2835
2836 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
2837         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
2838                 iwl4965_hw_channel_switch(priv, conf->channel);
2839                 goto out;
2840         }
2841 #endif
2842
2843         if (!conf->radio_enabled) {
2844                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
2845                 goto out;
2846         }
2847
2848         if (iwl_is_rfkill(priv)) {
2849                 IWL_DEBUG_MAC80211("leave - RF kill\n");
2850                 ret = -EIO;
2851                 goto out;
2852         }
2853
2854         if (conf->flags & IEEE80211_CONF_PS)
2855                 ret = iwl_power_set_user_mode(priv, IWL_POWER_INDEX_3);
2856         else
2857                 ret = iwl_power_set_user_mode(priv, IWL_POWER_MODE_CAM);
2858         if (ret)
2859                 IWL_DEBUG_MAC80211("Error setting power level\n");
2860
2861         IWL_DEBUG_MAC80211("TX Power old=%d new=%d\n",
2862                            priv->tx_power_user_lmt, conf->power_level);
2863
2864         iwl_set_tx_power(priv, conf->power_level, false);
2865
2866         iwl4965_set_rate(priv);
2867
2868         if (memcmp(&priv->active_rxon,
2869                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
2870                 iwl4965_commit_rxon(priv);
2871         else
2872                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
2873
2874         IWL_DEBUG_MAC80211("leave\n");
2875
2876 out:
2877         mutex_unlock(&priv->mutex);
2878         return ret;
2879 }
2880
2881 static void iwl4965_config_ap(struct iwl_priv *priv)
2882 {
2883         int ret = 0;
2884         unsigned long flags;
2885
2886         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2887                 return;
2888
2889         /* The following should be done only at AP bring up */
2890         if (!(iwl_is_associated(priv))) {
2891
2892                 /* RXON - unassoc (to set timing command) */
2893                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2894                 iwl4965_commit_rxon(priv);
2895
2896                 /* RXON Timing */
2897                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
2898                 iwl4965_setup_rxon_timing(priv);
2899                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
2900                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
2901                 if (ret)
2902                         IWL_WARNING("REPLY_RXON_TIMING failed - "
2903                                         "Attempting to continue.\n");
2904
2905                 iwl_set_rxon_chain(priv);
2906
2907                 /* FIXME: what should be the assoc_id for AP? */
2908                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
2909                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2910                         priv->staging_rxon.flags |=
2911                                 RXON_FLG_SHORT_PREAMBLE_MSK;
2912                 else
2913                         priv->staging_rxon.flags &=
2914                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
2915
2916                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
2917                         if (priv->assoc_capability &
2918                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
2919                                 priv->staging_rxon.flags |=
2920                                         RXON_FLG_SHORT_SLOT_MSK;
2921                         else
2922                                 priv->staging_rxon.flags &=
2923                                         ~RXON_FLG_SHORT_SLOT_MSK;
2924
2925                         if (priv->iw_mode == NL80211_IFTYPE_ADHOC)
2926                                 priv->staging_rxon.flags &=
2927                                         ~RXON_FLG_SHORT_SLOT_MSK;
2928                 }
2929                 /* restore RXON assoc */
2930                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
2931                 iwl4965_commit_rxon(priv);
2932                 spin_lock_irqsave(&priv->lock, flags);
2933                 iwl_activate_qos(priv, 1);
2934                 spin_unlock_irqrestore(&priv->lock, flags);
2935                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
2936         }
2937         iwl4965_send_beacon_cmd(priv);
2938
2939         /* FIXME - we need to add code here to detect a totally new
2940          * configuration, reset the AP, unassoc, rxon timing, assoc,
2941          * clear sta table, add BCAST sta... */
2942 }
2943
2944 /* temporary */
2945 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb);
2946
2947 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
2948                                         struct ieee80211_vif *vif,
2949                                     struct ieee80211_if_conf *conf)
2950 {
2951         struct iwl_priv *priv = hw->priv;
2952         DECLARE_MAC_BUF(mac);
2953         unsigned long flags;
2954         int rc;
2955
2956         if (conf == NULL)
2957                 return -EIO;
2958
2959         if (priv->vif != vif) {
2960                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
2961                 return 0;
2962         }
2963
2964         if (priv->iw_mode == NL80211_IFTYPE_ADHOC &&
2965             conf->changed & IEEE80211_IFCC_BEACON) {
2966                 struct sk_buff *beacon = ieee80211_beacon_get(hw, vif);
2967                 if (!beacon)
2968                         return -ENOMEM;
2969                 rc = iwl4965_mac_beacon_update(hw, beacon);
2970                 if (rc)
2971                         return rc;
2972         }
2973
2974         if ((priv->iw_mode == NL80211_IFTYPE_AP) &&
2975             (!conf->ssid_len)) {
2976                 IWL_DEBUG_MAC80211
2977                     ("Leaving in AP mode because HostAPD is not ready.\n");
2978                 return 0;
2979         }
2980
2981         if (!iwl_is_alive(priv))
2982                 return -EAGAIN;
2983
2984         mutex_lock(&priv->mutex);
2985
2986         if (conf->bssid)
2987                 IWL_DEBUG_MAC80211("bssid: %s\n",
2988                                    print_mac(mac, conf->bssid));
2989
2990 /*
2991  * very dubious code was here; the probe filtering flag is never set:
2992  *
2993         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
2994             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
2995  */
2996
2997         if (priv->iw_mode == NL80211_IFTYPE_AP) {
2998                 if (!conf->bssid) {
2999                         conf->bssid = priv->mac_addr;
3000                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
3001                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
3002                                            print_mac(mac, conf->bssid));
3003                 }
3004                 if (priv->ibss_beacon)
3005                         dev_kfree_skb(priv->ibss_beacon);
3006
3007                 priv->ibss_beacon = ieee80211_beacon_get(hw, vif);
3008         }
3009
3010         if (iwl_is_rfkill(priv))
3011                 goto done;
3012
3013         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
3014             !is_multicast_ether_addr(conf->bssid)) {
3015                 /* If there is currently a HW scan going on in the background
3016                  * then we need to cancel it else the RXON below will fail. */
3017                 if (iwl_scan_cancel_timeout(priv, 100)) {
3018                         IWL_WARNING("Aborted scan still in progress "
3019                                     "after 100ms\n");
3020                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
3021                         mutex_unlock(&priv->mutex);
3022                         return -EAGAIN;
3023                 }
3024                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
3025
3026                 /* TODO: Audit driver for usage of these members and see
3027                  * if mac80211 deprecates them (priv->bssid looks like it
3028                  * shouldn't be there, but I haven't scanned the IBSS code
3029                  * to verify) - jpk */
3030                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
3031
3032                 if (priv->iw_mode == NL80211_IFTYPE_AP)
3033                         iwl4965_config_ap(priv);
3034                 else {
3035                         rc = iwl4965_commit_rxon(priv);
3036                         if ((priv->iw_mode == NL80211_IFTYPE_STATION) && rc)
3037                                 iwl_rxon_add_station(
3038                                         priv, priv->active_rxon.bssid_addr, 1);
3039                 }
3040
3041         } else {
3042                 iwl_scan_cancel_timeout(priv, 100);
3043                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3044                 iwl4965_commit_rxon(priv);
3045         }
3046
3047  done:
3048         spin_lock_irqsave(&priv->lock, flags);
3049         if (!conf->ssid_len)
3050                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3051         else
3052                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
3053
3054         priv->essid_len = conf->ssid_len;
3055         spin_unlock_irqrestore(&priv->lock, flags);
3056
3057         IWL_DEBUG_MAC80211("leave\n");
3058         mutex_unlock(&priv->mutex);
3059
3060         return 0;
3061 }
3062
3063 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
3064                                  unsigned int changed_flags,
3065                                  unsigned int *total_flags,
3066                                  int mc_count, struct dev_addr_list *mc_list)
3067 {
3068         struct iwl_priv *priv = hw->priv;
3069
3070         if (changed_flags & (*total_flags) & FIF_OTHER_BSS) {
3071                 IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
3072                                    NL80211_IFTYPE_MONITOR,
3073                                    changed_flags, *total_flags);
3074                 /* queue work 'cuz mac80211 is holding a lock which
3075                  * prevents us from issuing (synchronous) f/w cmds */
3076                 queue_work(priv->workqueue, &priv->set_monitor);
3077         }
3078         *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI |
3079                         FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3080 }
3081
3082 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
3083                                      struct ieee80211_if_init_conf *conf)
3084 {
3085         struct iwl_priv *priv = hw->priv;
3086
3087         IWL_DEBUG_MAC80211("enter\n");
3088
3089         mutex_lock(&priv->mutex);
3090
3091         if (iwl_is_ready_rf(priv)) {
3092                 iwl_scan_cancel_timeout(priv, 100);
3093                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3094                 iwl4965_commit_rxon(priv);
3095         }
3096         if (priv->vif == conf->vif) {
3097                 priv->vif = NULL;
3098                 memset(priv->bssid, 0, ETH_ALEN);
3099                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
3100                 priv->essid_len = 0;
3101         }
3102         mutex_unlock(&priv->mutex);
3103
3104         IWL_DEBUG_MAC80211("leave\n");
3105
3106 }
3107
3108 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
3109 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
3110                                      struct ieee80211_vif *vif,
3111                                      struct ieee80211_bss_conf *bss_conf,
3112                                      u32 changes)
3113 {
3114         struct iwl_priv *priv = hw->priv;
3115
3116         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
3117
3118         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
3119                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
3120                                    bss_conf->use_short_preamble);
3121                 if (bss_conf->use_short_preamble)
3122                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3123                 else
3124                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3125         }
3126
3127         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
3128                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
3129                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
3130                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
3131                 else
3132                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
3133         }
3134
3135         if (changes & BSS_CHANGED_HT) {
3136                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
3137                 iwl4965_ht_conf(priv, bss_conf);
3138                 iwl_set_rxon_chain(priv);
3139         }
3140
3141         if (changes & BSS_CHANGED_ASSOC) {
3142                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
3143                 /* This should never happen as this function should
3144                  * never be called from interrupt context. */
3145                 if (WARN_ON_ONCE(in_interrupt()))
3146                         return;
3147                 if (bss_conf->assoc) {
3148                         priv->assoc_id = bss_conf->aid;
3149                         priv->beacon_int = bss_conf->beacon_int;
3150                         priv->power_data.dtim_period = bss_conf->dtim_period;
3151                         priv->timestamp = bss_conf->timestamp;
3152                         priv->assoc_capability = bss_conf->assoc_capability;
3153
3154                         /* we have just associated, don't start scan too early
3155                          * leave time for EAPOL exchange to complete
3156                          */
3157                         priv->next_scan_jiffies = jiffies +
3158                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
3159                         mutex_lock(&priv->mutex);
3160                         iwl4965_post_associate(priv);
3161                         mutex_unlock(&priv->mutex);
3162                 } else {
3163                         priv->assoc_id = 0;
3164                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
3165                 }
3166         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
3167                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
3168                         iwl_send_rxon_assoc(priv);
3169         }
3170
3171 }
3172
3173 static int iwl_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t ssid_len)
3174 {
3175         unsigned long flags;
3176         struct iwl_priv *priv = hw->priv;
3177         int ret;
3178
3179         IWL_DEBUG_MAC80211("enter\n");
3180
3181         mutex_lock(&priv->mutex);
3182         spin_lock_irqsave(&priv->lock, flags);
3183
3184         if (!iwl_is_ready_rf(priv)) {
3185                 ret = -EIO;
3186                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
3187                 goto out_unlock;
3188         }
3189
3190         if (priv->iw_mode == NL80211_IFTYPE_AP) {       /* APs don't scan */
3191                 ret = -EIO;
3192                 IWL_ERROR("ERROR: APs don't scan\n");
3193                 goto out_unlock;
3194         }
3195
3196         /* We don't schedule scan within next_scan_jiffies period.
3197          * Avoid scanning during possible EAPOL exchange, return
3198          * success immediately.
3199          */
3200         if (priv->next_scan_jiffies &&
3201             time_after(priv->next_scan_jiffies, jiffies)) {
3202                 IWL_DEBUG_SCAN("scan rejected: within next scan period\n");
3203                 queue_work(priv->workqueue, &priv->scan_completed);
3204                 ret = 0;
3205                 goto out_unlock;
3206         }
3207
3208         /* if we just finished scan ask for delay */
3209         if (iwl_is_associated(priv) && priv->last_scan_jiffies &&
3210             time_after(priv->last_scan_jiffies + IWL_DELAY_NEXT_SCAN, jiffies)) {
3211                 IWL_DEBUG_SCAN("scan rejected: within previous scan period\n");
3212                 queue_work(priv->workqueue, &priv->scan_completed);
3213                 ret = 0;
3214                 goto out_unlock;
3215         }
3216
3217         if (ssid_len) {
3218                 priv->one_direct_scan = 1;
3219                 priv->direct_ssid_len =  min_t(u8, ssid_len, IW_ESSID_MAX_SIZE);
3220                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
3221         } else {
3222                 priv->one_direct_scan = 0;
3223         }
3224
3225         ret = iwl_scan_initiate(priv);
3226
3227         IWL_DEBUG_MAC80211("leave\n");
3228
3229 out_unlock:
3230         spin_unlock_irqrestore(&priv->lock, flags);
3231         mutex_unlock(&priv->mutex);
3232
3233         return ret;
3234 }
3235
3236 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
3237                         struct ieee80211_key_conf *keyconf, const u8 *addr,
3238                         u32 iv32, u16 *phase1key)
3239 {
3240         struct iwl_priv *priv = hw->priv;
3241         u8 sta_id = IWL_INVALID_STATION;
3242         unsigned long flags;
3243         __le16 key_flags = 0;
3244         int i;
3245         DECLARE_MAC_BUF(mac);
3246
3247         IWL_DEBUG_MAC80211("enter\n");
3248
3249         sta_id = iwl_find_station(priv, addr);
3250         if (sta_id == IWL_INVALID_STATION) {
3251                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3252                                    print_mac(mac, addr));
3253                 return;
3254         }
3255
3256         if (iwl_scan_cancel(priv)) {
3257                 /* cancel scan failed, just live w/ bad key and rely
3258                    briefly on SW decryption */
3259                 return;
3260         }
3261
3262         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
3263         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
3264         key_flags &= ~STA_KEY_FLG_INVALID;
3265
3266         if (sta_id == priv->hw_params.bcast_sta_id)
3267                 key_flags |= STA_KEY_MULTICAST_MSK;
3268
3269         spin_lock_irqsave(&priv->sta_lock, flags);
3270
3271         priv->stations[sta_id].sta.key.key_flags = key_flags;
3272         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
3273
3274         for (i = 0; i < 5; i++)
3275                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
3276                         cpu_to_le16(phase1key[i]);
3277
3278         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
3279         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
3280
3281         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
3282
3283         spin_unlock_irqrestore(&priv->sta_lock, flags);
3284
3285         IWL_DEBUG_MAC80211("leave\n");
3286 }
3287
3288 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
3289                            const u8 *local_addr, const u8 *addr,
3290                            struct ieee80211_key_conf *key)
3291 {
3292         struct iwl_priv *priv = hw->priv;
3293         DECLARE_MAC_BUF(mac);
3294         int ret = 0;
3295         u8 sta_id = IWL_INVALID_STATION;
3296         u8 is_default_wep_key = 0;
3297
3298         IWL_DEBUG_MAC80211("enter\n");
3299
3300         if (priv->hw_params.sw_crypto) {
3301                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
3302                 return -EOPNOTSUPP;
3303         }
3304
3305         if (is_zero_ether_addr(addr))
3306                 /* only support pairwise keys */
3307                 return -EOPNOTSUPP;
3308
3309         sta_id = iwl_find_station(priv, addr);
3310         if (sta_id == IWL_INVALID_STATION) {
3311                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
3312                                    print_mac(mac, addr));
3313                 return -EINVAL;
3314
3315         }
3316
3317         mutex_lock(&priv->mutex);
3318         iwl_scan_cancel_timeout(priv, 100);
3319         mutex_unlock(&priv->mutex);
3320
3321         /* If we are getting WEP group key and we didn't receive any key mapping
3322          * so far, we are in legacy wep mode (group key only), otherwise we are
3323          * in 1X mode.
3324          * In legacy wep mode, we use another host command to the uCode */
3325         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
3326                 priv->iw_mode != NL80211_IFTYPE_AP) {
3327                 if (cmd == SET_KEY)
3328                         is_default_wep_key = !priv->key_mapping_key;
3329                 else
3330                         is_default_wep_key =
3331                                         (key->hw_key_idx == HW_KEY_DEFAULT);
3332         }
3333
3334         switch (cmd) {
3335         case SET_KEY:
3336                 if (is_default_wep_key)
3337                         ret = iwl_set_default_wep_key(priv, key);
3338                 else
3339                         ret = iwl_set_dynamic_key(priv, key, sta_id);
3340
3341                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
3342                 break;
3343         case DISABLE_KEY:
3344                 if (is_default_wep_key)
3345                         ret = iwl_remove_default_wep_key(priv, key);
3346                 else
3347                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
3348
3349                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
3350                 break;
3351         default:
3352                 ret = -EINVAL;
3353         }
3354
3355         IWL_DEBUG_MAC80211("leave\n");
3356
3357         return ret;
3358 }
3359
3360 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
3361                            const struct ieee80211_tx_queue_params *params)
3362 {
3363         struct iwl_priv *priv = hw->priv;
3364         unsigned long flags;
3365         int q;
3366
3367         IWL_DEBUG_MAC80211("enter\n");
3368
3369         if (!iwl_is_ready_rf(priv)) {
3370                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3371                 return -EIO;
3372         }
3373
3374         if (queue >= AC_NUM) {
3375                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
3376                 return 0;
3377         }
3378
3379         if (!priv->qos_data.qos_enable) {
3380                 priv->qos_data.qos_active = 0;
3381                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
3382                 return 0;
3383         }
3384         q = AC_NUM - 1 - queue;
3385
3386         spin_lock_irqsave(&priv->lock, flags);
3387
3388         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
3389         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
3390         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
3391         priv->qos_data.def_qos_parm.ac[q].edca_txop =
3392                         cpu_to_le16((params->txop * 32));
3393
3394         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
3395         priv->qos_data.qos_active = 1;
3396
3397         if (priv->iw_mode == NL80211_IFTYPE_AP)
3398                 iwl_activate_qos(priv, 1);
3399         else if (priv->assoc_id && iwl_is_associated(priv))
3400                 iwl_activate_qos(priv, 0);
3401
3402         spin_unlock_irqrestore(&priv->lock, flags);
3403
3404         IWL_DEBUG_MAC80211("leave\n");
3405         return 0;
3406 }
3407
3408 static int iwl4965_mac_ampdu_action(struct ieee80211_hw *hw,
3409                              enum ieee80211_ampdu_mlme_action action,
3410                              struct ieee80211_sta *sta, u16 tid, u16 *ssn)
3411 {
3412         struct iwl_priv *priv = hw->priv;
3413         DECLARE_MAC_BUF(mac);
3414
3415         IWL_DEBUG_HT("A-MPDU action on addr %s tid %d\n",
3416                      print_mac(mac, sta->addr), tid);
3417
3418         if (!(priv->cfg->sku & IWL_SKU_N))
3419                 return -EACCES;
3420
3421         switch (action) {
3422         case IEEE80211_AMPDU_RX_START:
3423                 IWL_DEBUG_HT("start Rx\n");
3424                 return iwl_rx_agg_start(priv, sta->addr, tid, *ssn);
3425         case IEEE80211_AMPDU_RX_STOP:
3426                 IWL_DEBUG_HT("stop Rx\n");
3427                 return iwl_rx_agg_stop(priv, sta->addr, tid);
3428         case IEEE80211_AMPDU_TX_START:
3429                 IWL_DEBUG_HT("start Tx\n");
3430                 return iwl_tx_agg_start(priv, sta->addr, tid, ssn);
3431         case IEEE80211_AMPDU_TX_STOP:
3432                 IWL_DEBUG_HT("stop Tx\n");
3433                 return iwl_tx_agg_stop(priv, sta->addr, tid);
3434         default:
3435                 IWL_DEBUG_HT("unknown\n");
3436                 return -EINVAL;
3437                 break;
3438         }
3439         return 0;
3440 }
3441 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
3442                                 struct ieee80211_tx_queue_stats *stats)
3443 {
3444         struct iwl_priv *priv = hw->priv;
3445         int i, avail;
3446         struct iwl_tx_queue *txq;
3447         struct iwl_queue *q;
3448         unsigned long flags;
3449
3450         IWL_DEBUG_MAC80211("enter\n");
3451
3452         if (!iwl_is_ready_rf(priv)) {
3453                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3454                 return -EIO;
3455         }
3456
3457         spin_lock_irqsave(&priv->lock, flags);
3458
3459         for (i = 0; i < AC_NUM; i++) {
3460                 txq = &priv->txq[i];
3461                 q = &txq->q;
3462                 avail = iwl_queue_space(q);
3463
3464                 stats[i].len = q->n_window - avail;
3465                 stats[i].limit = q->n_window - q->high_mark;
3466                 stats[i].count = q->n_window;
3467
3468         }
3469         spin_unlock_irqrestore(&priv->lock, flags);
3470
3471         IWL_DEBUG_MAC80211("leave\n");
3472
3473         return 0;
3474 }
3475
3476 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
3477                              struct ieee80211_low_level_stats *stats)
3478 {
3479         struct iwl_priv *priv = hw->priv;
3480
3481         priv = hw->priv;
3482         IWL_DEBUG_MAC80211("enter\n");
3483         IWL_DEBUG_MAC80211("leave\n");
3484
3485         return 0;
3486 }
3487
3488 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
3489 {
3490         struct iwl_priv *priv = hw->priv;
3491         unsigned long flags;
3492
3493         mutex_lock(&priv->mutex);
3494         IWL_DEBUG_MAC80211("enter\n");
3495
3496         spin_lock_irqsave(&priv->lock, flags);
3497         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
3498         spin_unlock_irqrestore(&priv->lock, flags);
3499
3500         iwl_reset_qos(priv);
3501
3502         spin_lock_irqsave(&priv->lock, flags);
3503         priv->assoc_id = 0;
3504         priv->assoc_capability = 0;
3505         priv->assoc_station_added = 0;
3506
3507         /* new association get rid of ibss beacon skb */
3508         if (priv->ibss_beacon)
3509                 dev_kfree_skb(priv->ibss_beacon);
3510
3511         priv->ibss_beacon = NULL;
3512
3513         priv->beacon_int = priv->hw->conf.beacon_int;
3514         priv->timestamp = 0;
3515         if ((priv->iw_mode == NL80211_IFTYPE_STATION))
3516                 priv->beacon_int = 0;
3517
3518         spin_unlock_irqrestore(&priv->lock, flags);
3519
3520         if (!iwl_is_ready_rf(priv)) {
3521                 IWL_DEBUG_MAC80211("leave - not ready\n");
3522                 mutex_unlock(&priv->mutex);
3523                 return;
3524         }
3525
3526         /* we are restarting association process
3527          * clear RXON_FILTER_ASSOC_MSK bit
3528          */
3529         if (priv->iw_mode != NL80211_IFTYPE_AP) {
3530                 iwl_scan_cancel_timeout(priv, 100);
3531                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3532                 iwl4965_commit_rxon(priv);
3533         }
3534
3535         iwl_power_update_mode(priv, 0);
3536
3537         /* Per mac80211.h: This is only used in IBSS mode... */
3538         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3539
3540                 /* switch to CAM during association period.
3541                  * the ucode will block any association/authentication
3542                  * frome during assiciation period if it can not hear
3543                  * the AP because of PM. the timer enable PM back is
3544                  * association do not complete
3545                  */
3546                 if (priv->hw->conf.channel->flags & (IEEE80211_CHAN_PASSIVE_SCAN |
3547                                                      IEEE80211_CHAN_RADAR))
3548                                 iwl_power_disable_management(priv, 3000);
3549
3550                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
3551                 mutex_unlock(&priv->mutex);
3552                 return;
3553         }
3554
3555         iwl4965_set_rate(priv);
3556
3557         mutex_unlock(&priv->mutex);
3558
3559         IWL_DEBUG_MAC80211("leave\n");
3560 }
3561
3562 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
3563 {
3564         struct iwl_priv *priv = hw->priv;
3565         unsigned long flags;
3566         __le64 timestamp;
3567
3568         mutex_lock(&priv->mutex);
3569         IWL_DEBUG_MAC80211("enter\n");
3570
3571         if (!iwl_is_ready_rf(priv)) {
3572                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
3573                 mutex_unlock(&priv->mutex);
3574                 return -EIO;
3575         }
3576
3577         if (priv->iw_mode != NL80211_IFTYPE_ADHOC) {
3578                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
3579                 mutex_unlock(&priv->mutex);
3580                 return -EIO;
3581         }
3582
3583         spin_lock_irqsave(&priv->lock, flags);
3584
3585         if (priv->ibss_beacon)
3586                 dev_kfree_skb(priv->ibss_beacon);
3587
3588         priv->ibss_beacon = skb;
3589
3590         priv->assoc_id = 0;
3591         timestamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
3592         priv->timestamp = le64_to_cpu(timestamp);
3593
3594         IWL_DEBUG_MAC80211("leave\n");
3595         spin_unlock_irqrestore(&priv->lock, flags);
3596
3597         iwl_reset_qos(priv);
3598
3599         iwl4965_post_associate(priv);
3600
3601         mutex_unlock(&priv->mutex);
3602
3603         return 0;
3604 }
3605
3606 /*****************************************************************************
3607  *
3608  * sysfs attributes
3609  *
3610  *****************************************************************************/
3611
3612 #ifdef CONFIG_IWLWIFI_DEBUG
3613
3614 /*
3615  * The following adds a new attribute to the sysfs representation
3616  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
3617  * used for controlling the debug level.
3618  *
3619  * See the level definitions in iwl for details.
3620  */
3621
3622 static ssize_t show_debug_level(struct device *d,
3623                                 struct device_attribute *attr, char *buf)
3624 {
3625         struct iwl_priv *priv = d->driver_data;
3626
3627         return sprintf(buf, "0x%08X\n", priv->debug_level);
3628 }
3629 static ssize_t store_debug_level(struct device *d,
3630                                 struct device_attribute *attr,
3631                                  const char *buf, size_t count)
3632 {
3633         struct iwl_priv *priv = d->driver_data;
3634         unsigned long val;
3635         int ret;
3636
3637         ret = strict_strtoul(buf, 0, &val);
3638         if (ret)
3639                 printk(KERN_INFO DRV_NAME
3640                        ": %s is not in hex or decimal form.\n", buf);
3641         else
3642                 priv->debug_level = val;
3643
3644         return strnlen(buf, count);
3645 }
3646
3647 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
3648                         show_debug_level, store_debug_level);
3649
3650
3651 #endif /* CONFIG_IWLWIFI_DEBUG */
3652
3653
3654 static ssize_t show_version(struct device *d,
3655                                 struct device_attribute *attr, char *buf)
3656 {
3657         struct iwl_priv *priv = d->driver_data;
3658         struct iwl_alive_resp *palive = &priv->card_alive;
3659         ssize_t pos = 0;
3660         u16 eeprom_ver;
3661
3662         if (palive->is_valid)
3663                 pos += sprintf(buf + pos,
3664                                 "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
3665                                 "fw type: 0x%01X 0x%01X\n",
3666                                 palive->ucode_major, palive->ucode_minor,
3667                                 palive->sw_rev[0], palive->sw_rev[1],
3668                                 palive->ver_type, palive->ver_subtype);
3669         else
3670                 pos += sprintf(buf + pos, "fw not loaded\n");
3671
3672         if (priv->eeprom) {
3673                 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
3674                 pos += sprintf(buf + pos, "EEPROM version: 0x%x\n",
3675                                  eeprom_ver);
3676         } else {
3677                 pos += sprintf(buf + pos, "EEPROM not initialzed\n");
3678         }
3679
3680         return pos;
3681 }
3682
3683 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
3684
3685 static ssize_t show_temperature(struct device *d,
3686                                 struct device_attribute *attr, char *buf)
3687 {
3688         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3689
3690         if (!iwl_is_alive(priv))
3691                 return -EAGAIN;
3692
3693         return sprintf(buf, "%d\n", priv->temperature);
3694 }
3695
3696 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
3697
3698 static ssize_t show_tx_power(struct device *d,
3699                              struct device_attribute *attr, char *buf)
3700 {
3701         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3702         return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
3703 }
3704
3705 static ssize_t store_tx_power(struct device *d,
3706                               struct device_attribute *attr,
3707                               const char *buf, size_t count)
3708 {
3709         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3710         unsigned long val;
3711         int ret;
3712
3713         ret = strict_strtoul(buf, 10, &val);
3714         if (ret)
3715                 printk(KERN_INFO DRV_NAME
3716                        ": %s is not in decimal form.\n", buf);
3717         else
3718                 iwl_set_tx_power(priv, val, false);
3719
3720         return count;
3721 }
3722
3723 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
3724
3725 static ssize_t show_flags(struct device *d,
3726                           struct device_attribute *attr, char *buf)
3727 {
3728         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3729
3730         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
3731 }
3732
3733 static ssize_t store_flags(struct device *d,
3734                            struct device_attribute *attr,
3735                            const char *buf, size_t count)
3736 {
3737         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3738         unsigned long val;
3739         u32 flags;
3740         int ret = strict_strtoul(buf, 0, &val);
3741         if (ret)
3742                 return ret;
3743         flags = (u32)val;
3744
3745         mutex_lock(&priv->mutex);
3746         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
3747                 /* Cancel any currently running scans... */
3748                 if (iwl_scan_cancel_timeout(priv, 100))
3749                         IWL_WARNING("Could not cancel scan.\n");
3750                 else {
3751                         IWL_DEBUG_INFO("Commit rxon.flags = 0x%04X\n", flags);
3752                         priv->staging_rxon.flags = cpu_to_le32(flags);
3753                         iwl4965_commit_rxon(priv);
3754                 }
3755         }
3756         mutex_unlock(&priv->mutex);
3757
3758         return count;
3759 }
3760
3761 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
3762
3763 static ssize_t show_filter_flags(struct device *d,
3764                                  struct device_attribute *attr, char *buf)
3765 {
3766         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3767
3768         return sprintf(buf, "0x%04X\n",
3769                 le32_to_cpu(priv->active_rxon.filter_flags));
3770 }
3771
3772 static ssize_t store_filter_flags(struct device *d,
3773                                   struct device_attribute *attr,
3774                                   const char *buf, size_t count)
3775 {
3776         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
3777         unsigned long val;
3778         u32 filter_flags;
3779         int ret = strict_strtoul(buf, 0, &val);
3780         if (ret)
3781                 return ret;
3782         filter_flags = (u32)val;
3783
3784         mutex_lock(&priv->mutex);
3785         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
3786                 /* Cancel any currently running scans... */
3787                 if (iwl_scan_cancel_timeout(priv, 100))
3788                         IWL_WARNING("Could not cancel scan.\n");
3789                 else {
3790                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
3791                                        "0x%04X\n", filter_flags);
3792                         priv->staging_rxon.filter_flags =
3793                                 cpu_to_le32(filter_flags);
3794                         iwl4965_commit_rxon(priv);
3795                 }
3796         }
3797         mutex_unlock(&priv->mutex);
3798
3799         return count;
3800 }
3801
3802 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
3803                    store_filter_flags);
3804
3805 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
3806
3807 static ssize_t show_measurement(struct device *d,
3808                                 struct device_attribute *attr, char *buf)
3809 {
3810         struct iwl_priv *priv = dev_get_drvdata(d);
3811         struct iwl4965_spectrum_notification measure_report;
3812         u32 size = sizeof(measure_report), len = 0, ofs = 0;
3813         u8 *data = (u8 *)&measure_report;
3814         unsigned long flags;
3815
3816         spin_lock_irqsave(&priv->lock, flags);
3817         if (!(priv->measurement_status & MEASUREMENT_READY)) {
3818                 spin_unlock_irqrestore(&priv->lock, flags);
3819                 return 0;
3820         }
3821         memcpy(&measure_report, &priv->measure_report, size);
3822         priv->measurement_status = 0;
3823         spin_unlock_irqrestore(&priv->lock, flags);
3824
3825         while (size && (PAGE_SIZE - len)) {
3826                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
3827                                    PAGE_SIZE - len, 1);
3828                 len = strlen(buf);
3829                 if (PAGE_SIZE - len)
3830                         buf[len++] = '\n';
3831
3832                 ofs += 16;
3833                 size -= min(size, 16U);
3834         }
3835
3836         return len;
3837 }
3838
3839 static ssize_t store_measurement(struct device *d,
3840                                  struct device_attribute *attr,
3841                                  const char *buf, size_t count)
3842 {
3843         struct iwl_priv *priv = dev_get_drvdata(d);
3844         struct ieee80211_measurement_params params = {
3845                 .channel = le16_to_cpu(priv->active_rxon.channel),
3846                 .start_time = cpu_to_le64(priv->last_tsf),
3847                 .duration = cpu_to_le16(1),
3848         };
3849         u8 type = IWL_MEASURE_BASIC;
3850         u8 buffer[32];
3851         u8 channel;
3852
3853         if (count) {
3854                 char *p = buffer;
3855                 strncpy(buffer, buf, min(sizeof(buffer), count));
3856                 channel = simple_strtoul(p, NULL, 0);
3857                 if (channel)
3858                         params.channel = channel;
3859
3860                 p = buffer;
3861                 while (*p && *p != ' ')
3862                         p++;
3863                 if (*p)
3864                         type = simple_strtoul(p + 1, NULL, 0);
3865         }
3866
3867         IWL_DEBUG_INFO("Invoking measurement of type %d on "
3868                        "channel %d (for '%s')\n", type, params.channel, buf);
3869         iwl4965_get_measurement(priv, &params, type);
3870
3871         return count;
3872 }
3873
3874 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
3875                    show_measurement, store_measurement);
3876 #endif /* CONFIG_IWLAGN_SPECTRUM_MEASUREMENT */
3877
3878 static ssize_t store_retry_rate(struct device *d,
3879                                 struct device_attribute *attr,
3880                                 const char *buf, size_t count)
3881 {
3882         struct iwl_priv *priv = dev_get_drvdata(d);
3883         long val;
3884         int ret  = strict_strtol(buf, 10, &val);
3885         if (!ret)
3886                 return ret;
3887
3888         priv->retry_rate = (val > 0) ? val : 1;
3889
3890         return count;
3891 }
3892
3893 static ssize_t show_retry_rate(struct device *d,
3894                                struct device_attribute *attr, char *buf)
3895 {
3896         struct iwl_priv *priv = dev_get_drvdata(d);
3897         return sprintf(buf, "%d", priv->retry_rate);
3898 }
3899
3900 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
3901                    store_retry_rate);
3902
3903 static ssize_t store_power_level(struct device *d,
3904                                  struct device_attribute *attr,
3905                                  const char *buf, size_t count)
3906 {
3907         struct iwl_priv *priv = dev_get_drvdata(d);
3908         int ret;
3909         unsigned long mode;
3910
3911
3912         mutex_lock(&priv->mutex);
3913
3914         if (!iwl_is_ready(priv)) {
3915                 ret = -EAGAIN;
3916                 goto out;
3917         }
3918
3919         ret = strict_strtoul(buf, 10, &mode);
3920         if (ret)
3921                 goto out;
3922
3923         ret = iwl_power_set_user_mode(priv, mode);
3924         if (ret) {
3925                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
3926                 goto out;
3927         }
3928         ret = count;
3929
3930  out:
3931         mutex_unlock(&priv->mutex);
3932         return ret;
3933 }
3934
3935 static ssize_t show_power_level(struct device *d,
3936                                 struct device_attribute *attr, char *buf)
3937 {
3938         struct iwl_priv *priv = dev_get_drvdata(d);
3939         int mode = priv->power_data.user_power_setting;
3940         int system = priv->power_data.system_power_setting;
3941         int level = priv->power_data.power_mode;
3942         char *p = buf;
3943
3944         switch (system) {
3945         case IWL_POWER_SYS_AUTO:
3946                 p += sprintf(p, "SYSTEM:auto");
3947                 break;
3948         case IWL_POWER_SYS_AC:
3949                 p += sprintf(p, "SYSTEM:ac");
3950                 break;
3951         case IWL_POWER_SYS_BATTERY:
3952                 p += sprintf(p, "SYSTEM:battery");
3953                 break;
3954         }
3955
3956         p += sprintf(p, "\tMODE:%s", (mode < IWL_POWER_AUTO)?"fixed":"auto");
3957         p += sprintf(p, "\tINDEX:%d", level);
3958         p += sprintf(p, "\n");
3959         return p - buf + 1;
3960 }
3961
3962 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
3963                    store_power_level);
3964
3965 static ssize_t show_channels(struct device *d,
3966                              struct device_attribute *attr, char *buf)
3967 {
3968
3969         struct iwl_priv *priv = dev_get_drvdata(d);
3970         struct ieee80211_channel *channels = NULL;
3971         const struct ieee80211_supported_band *supp_band = NULL;
3972         int len = 0, i;
3973         int count = 0;
3974
3975         if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status))
3976                 return -EAGAIN;
3977
3978         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ);
3979         channels = supp_band->channels;
3980         count = supp_band->n_channels;
3981
3982         len += sprintf(&buf[len],
3983                         "Displaying %d channels in 2.4GHz band "
3984                         "(802.11bg):\n", count);
3985
3986         for (i = 0; i < count; i++)
3987                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
3988                                 ieee80211_frequency_to_channel(
3989                                 channels[i].center_freq),
3990                                 channels[i].max_power,
3991                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
3992                                 " (IEEE 802.11h required)" : "",
3993                                 (!(channels[i].flags & IEEE80211_CHAN_NO_IBSS)
3994                                 || (channels[i].flags &
3995                                 IEEE80211_CHAN_RADAR)) ? "" :
3996                                 ", IBSS",
3997                                 channels[i].flags &
3998                                 IEEE80211_CHAN_PASSIVE_SCAN ?
3999                                 "passive only" : "active/passive");
4000
4001         supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ);
4002         channels = supp_band->channels;
4003         count = supp_band->n_channels;
4004
4005         len += sprintf(&buf[len], "Displaying %d channels in 5.2GHz band "
4006                         "(802.11a):\n", count);
4007
4008         for (i = 0; i < count; i++)
4009                 len += sprintf(&buf[len], "%d: %ddBm: BSS%s%s, %s.\n",
4010                                 ieee80211_frequency_to_channel(
4011                                 channels[i].center_freq),
4012                                 channels[i].max_power,
4013                                 channels[i].flags & IEEE80211_CHAN_RADAR ?
4014                                 " (IEEE 802.11h required)" : "",
4015                                 ((channels[i].flags & IEEE80211_CHAN_NO_IBSS)
4016                                 || (channels[i].flags &
4017                                 IEEE80211_CHAN_RADAR)) ? "" :
4018                                 ", IBSS",
4019                                 channels[i].flags &
4020                                 IEEE80211_CHAN_PASSIVE_SCAN ?
4021                                 "passive only" : "active/passive");
4022
4023         return len;
4024 }
4025
4026 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
4027
4028 static ssize_t show_statistics(struct device *d,
4029                                struct device_attribute *attr, char *buf)
4030 {
4031         struct iwl_priv *priv = dev_get_drvdata(d);
4032         u32 size = sizeof(struct iwl_notif_statistics);
4033         u32 len = 0, ofs = 0;
4034         u8 *data = (u8 *)&priv->statistics;
4035         int rc = 0;
4036
4037         if (!iwl_is_alive(priv))
4038                 return -EAGAIN;
4039
4040         mutex_lock(&priv->mutex);
4041         rc = iwl_send_statistics_request(priv, 0);
4042         mutex_unlock(&priv->mutex);
4043
4044         if (rc) {
4045                 len = sprintf(buf,
4046                               "Error sending statistics request: 0x%08X\n", rc);
4047                 return len;
4048         }
4049
4050         while (size && (PAGE_SIZE - len)) {
4051                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
4052                                    PAGE_SIZE - len, 1);
4053                 len = strlen(buf);
4054                 if (PAGE_SIZE - len)
4055                         buf[len++] = '\n';
4056
4057                 ofs += 16;
4058                 size -= min(size, 16U);
4059         }
4060
4061         return len;
4062 }
4063
4064 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
4065
4066 static ssize_t show_status(struct device *d,
4067                            struct device_attribute *attr, char *buf)
4068 {
4069         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
4070         if (!iwl_is_alive(priv))
4071                 return -EAGAIN;
4072         return sprintf(buf, "0x%08x\n", (int)priv->status);
4073 }
4074
4075 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
4076
4077 /*****************************************************************************
4078  *
4079  * driver setup and teardown
4080  *
4081  *****************************************************************************/
4082
4083 static void iwl_setup_deferred_work(struct iwl_priv *priv)
4084 {
4085         priv->workqueue = create_workqueue(DRV_NAME);
4086
4087         init_waitqueue_head(&priv->wait_command_queue);
4088
4089         INIT_WORK(&priv->up, iwl4965_bg_up);
4090         INIT_WORK(&priv->restart, iwl4965_bg_restart);
4091         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
4092         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
4093         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
4094         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
4095         INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
4096         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
4097         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
4098
4099         iwl_setup_scan_deferred_work(priv);
4100         iwl_setup_power_deferred_work(priv);
4101
4102         if (priv->cfg->ops->lib->setup_deferred_work)
4103                 priv->cfg->ops->lib->setup_deferred_work(priv);
4104
4105         init_timer(&priv->statistics_periodic);
4106         priv->statistics_periodic.data = (unsigned long)priv;
4107         priv->statistics_periodic.function = iwl4965_bg_statistics_periodic;
4108
4109         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
4110                      iwl4965_irq_tasklet, (unsigned long)priv);
4111 }
4112
4113 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
4114 {
4115         if (priv->cfg->ops->lib->cancel_deferred_work)
4116                 priv->cfg->ops->lib->cancel_deferred_work(priv);
4117
4118         cancel_delayed_work_sync(&priv->init_alive_start);
4119         cancel_delayed_work(&priv->scan_check);
4120         cancel_delayed_work_sync(&priv->set_power_save);
4121         cancel_delayed_work(&priv->alive_start);
4122         cancel_work_sync(&priv->beacon_update);
4123         del_timer_sync(&priv->statistics_periodic);
4124 }
4125
4126 static struct attribute *iwl4965_sysfs_entries[] = {
4127         &dev_attr_channels.attr,
4128         &dev_attr_flags.attr,
4129         &dev_attr_filter_flags.attr,
4130 #ifdef CONFIG_IWLAGN_SPECTRUM_MEASUREMENT
4131         &dev_attr_measurement.attr,
4132 #endif
4133         &dev_attr_power_level.attr,
4134         &dev_attr_retry_rate.attr,
4135         &dev_attr_statistics.attr,
4136         &dev_attr_status.attr,
4137         &dev_attr_temperature.attr,
4138         &dev_attr_tx_power.attr,
4139 #ifdef CONFIG_IWLWIFI_DEBUG
4140         &dev_attr_debug_level.attr,
4141 #endif
4142         &dev_attr_version.attr,
4143
4144         NULL
4145 };
4146
4147 static struct attribute_group iwl4965_attribute_group = {
4148         .name = NULL,           /* put in device directory */
4149         .attrs = iwl4965_sysfs_entries,
4150 };
4151
4152 static struct ieee80211_ops iwl4965_hw_ops = {
4153         .tx = iwl4965_mac_tx,
4154         .start = iwl4965_mac_start,
4155         .stop = iwl4965_mac_stop,
4156         .add_interface = iwl4965_mac_add_interface,
4157         .remove_interface = iwl4965_mac_remove_interface,
4158         .config = iwl4965_mac_config,
4159         .config_interface = iwl4965_mac_config_interface,
4160         .configure_filter = iwl4965_configure_filter,
4161         .set_key = iwl4965_mac_set_key,
4162         .update_tkip_key = iwl4965_mac_update_tkip_key,
4163         .get_stats = iwl4965_mac_get_stats,
4164         .get_tx_stats = iwl4965_mac_get_tx_stats,
4165         .conf_tx = iwl4965_mac_conf_tx,
4166         .reset_tsf = iwl4965_mac_reset_tsf,
4167         .bss_info_changed = iwl4965_bss_info_changed,
4168         .ampdu_action = iwl4965_mac_ampdu_action,
4169         .hw_scan = iwl_mac_hw_scan
4170 };
4171
4172 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
4173 {
4174         int err = 0;
4175         struct iwl_priv *priv;
4176         struct ieee80211_hw *hw;
4177         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
4178         unsigned long flags;
4179         DECLARE_MAC_BUF(mac);
4180
4181         /************************
4182          * 1. Allocating HW data
4183          ************************/
4184
4185         /* Disabling hardware scan means that mac80211 will perform scans
4186          * "the hard way", rather than using device's scan. */
4187         if (cfg->mod_params->disable_hw_scan) {
4188                 if (cfg->mod_params->debug & IWL_DL_INFO)
4189                         dev_printk(KERN_DEBUG, &(pdev->dev),
4190                                    "Disabling hw_scan\n");
4191                 iwl4965_hw_ops.hw_scan = NULL;
4192         }
4193
4194         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
4195         if (!hw) {
4196                 err = -ENOMEM;
4197                 goto out;
4198         }
4199         priv = hw->priv;
4200         /* At this point both hw and priv are allocated. */
4201
4202         SET_IEEE80211_DEV(hw, &pdev->dev);
4203
4204         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
4205         priv->cfg = cfg;
4206         priv->pci_dev = pdev;
4207
4208 #ifdef CONFIG_IWLWIFI_DEBUG
4209         priv->debug_level = priv->cfg->mod_params->debug;
4210         atomic_set(&priv->restrict_refcnt, 0);
4211 #endif
4212
4213         /**************************
4214          * 2. Initializing PCI bus
4215          **************************/
4216         if (pci_enable_device(pdev)) {
4217                 err = -ENODEV;
4218                 goto out_ieee80211_free_hw;
4219         }
4220
4221         pci_set_master(pdev);
4222
4223         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(36));
4224         if (!err)
4225                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(36));
4226         if (err) {
4227                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4228                 if (!err)
4229                         err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4230                 /* both attempts failed: */
4231                 if (err) {
4232                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
4233                                 DRV_NAME);
4234                         goto out_pci_disable_device;
4235                 }
4236         }
4237
4238         err = pci_request_regions(pdev, DRV_NAME);
4239         if (err)
4240                 goto out_pci_disable_device;
4241
4242         pci_set_drvdata(pdev, priv);
4243
4244
4245         /***********************
4246          * 3. Read REV register
4247          ***********************/
4248         priv->hw_base = pci_iomap(pdev, 0, 0);
4249         if (!priv->hw_base) {
4250                 err = -ENODEV;
4251                 goto out_pci_release_regions;
4252         }
4253
4254         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
4255                 (unsigned long long) pci_resource_len(pdev, 0));
4256         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
4257
4258         iwl_hw_detect(priv);
4259         printk(KERN_INFO DRV_NAME
4260                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
4261                 priv->cfg->name, priv->hw_rev);
4262
4263         /* We disable the RETRY_TIMEOUT register (0x41) to keep
4264          * PCI Tx retries from interfering with C3 CPU state */
4265         pci_write_config_byte(pdev, PCI_CFG_RETRY_TIMEOUT, 0x00);
4266
4267         /* amp init */
4268         err = priv->cfg->ops->lib->apm_ops.init(priv);
4269         if (err < 0) {
4270                 IWL_DEBUG_INFO("Failed to init APMG\n");
4271                 goto out_iounmap;
4272         }
4273         /*****************
4274          * 4. Read EEPROM
4275          *****************/
4276         /* Read the EEPROM */
4277         err = iwl_eeprom_init(priv);
4278         if (err) {
4279                 IWL_ERROR("Unable to init EEPROM\n");
4280                 goto out_iounmap;
4281         }
4282         err = iwl_eeprom_check_version(priv);
4283         if (err)
4284                 goto out_iounmap;
4285
4286         /* extract MAC Address */
4287         iwl_eeprom_get_mac(priv, priv->mac_addr);
4288         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
4289         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
4290
4291         /************************
4292          * 5. Setup HW constants
4293          ************************/
4294         if (iwl_set_hw_params(priv)) {
4295                 IWL_ERROR("failed to set hw parameters\n");
4296                 goto out_free_eeprom;
4297         }
4298
4299         /*******************
4300          * 6. Setup priv
4301          *******************/
4302
4303         err = iwl_init_drv(priv);
4304         if (err)
4305                 goto out_free_eeprom;
4306         /* At this point both hw and priv are initialized. */
4307
4308         /**********************************
4309          * 7. Initialize module parameters
4310          **********************************/
4311
4312         /* Disable radio (SW RF KILL) via parameter when loading driver */
4313         if (priv->cfg->mod_params->disable) {
4314                 set_bit(STATUS_RF_KILL_SW, &priv->status);
4315                 IWL_DEBUG_INFO("Radio disabled.\n");
4316         }
4317
4318         /********************
4319          * 8. Setup services
4320          ********************/
4321         spin_lock_irqsave(&priv->lock, flags);
4322         iwl4965_disable_interrupts(priv);
4323         spin_unlock_irqrestore(&priv->lock, flags);
4324
4325         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4326         if (err) {
4327                 IWL_ERROR("failed to create sysfs device attributes\n");
4328                 goto out_uninit_drv;
4329         }
4330
4331
4332         iwl_setup_deferred_work(priv);
4333         iwl_setup_rx_handlers(priv);
4334
4335         /********************
4336          * 9. Conclude
4337          ********************/
4338         pci_save_state(pdev);
4339         pci_disable_device(pdev);
4340
4341         /**********************************
4342          * 10. Setup and register mac80211
4343          **********************************/
4344
4345         err = iwl_setup_mac(priv);
4346         if (err)
4347                 goto out_remove_sysfs;
4348
4349         err = iwl_dbgfs_register(priv, DRV_NAME);
4350         if (err)
4351                 IWL_ERROR("failed to create debugfs files\n");
4352
4353         err = iwl_rfkill_init(priv);
4354         if (err)
4355                 IWL_ERROR("Unable to initialize RFKILL system. "
4356                                   "Ignoring error: %d\n", err);
4357         iwl_power_initialize(priv);
4358         return 0;
4359
4360  out_remove_sysfs:
4361         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4362  out_uninit_drv:
4363         iwl_uninit_drv(priv);
4364  out_free_eeprom:
4365         iwl_eeprom_free(priv);
4366  out_iounmap:
4367         pci_iounmap(pdev, priv->hw_base);
4368  out_pci_release_regions:
4369         pci_release_regions(pdev);
4370         pci_set_drvdata(pdev, NULL);
4371  out_pci_disable_device:
4372         pci_disable_device(pdev);
4373  out_ieee80211_free_hw:
4374         ieee80211_free_hw(priv->hw);
4375  out:
4376         return err;
4377 }
4378
4379 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
4380 {
4381         struct iwl_priv *priv = pci_get_drvdata(pdev);
4382         unsigned long flags;
4383
4384         if (!priv)
4385                 return;
4386
4387         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
4388
4389         iwl_dbgfs_unregister(priv);
4390         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
4391
4392         /* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
4393          * to be called and iwl4965_down since we are removing the device
4394          * we need to set STATUS_EXIT_PENDING bit.
4395          */
4396         set_bit(STATUS_EXIT_PENDING, &priv->status);
4397         if (priv->mac80211_registered) {
4398                 ieee80211_unregister_hw(priv->hw);
4399                 priv->mac80211_registered = 0;
4400         } else {
4401                 iwl4965_down(priv);
4402         }
4403
4404         /* make sure we flush any pending irq or
4405          * tasklet for the driver
4406          */
4407         spin_lock_irqsave(&priv->lock, flags);
4408         iwl4965_disable_interrupts(priv);
4409         spin_unlock_irqrestore(&priv->lock, flags);
4410
4411         iwl_synchronize_irq(priv);
4412
4413         iwl_rfkill_unregister(priv);
4414         iwl4965_dealloc_ucode_pci(priv);
4415
4416         if (priv->rxq.bd)
4417                 iwl_rx_queue_free(priv, &priv->rxq);
4418         iwl_hw_txq_ctx_free(priv);
4419
4420         iwl_clear_stations_table(priv);
4421         iwl_eeprom_free(priv);
4422
4423
4424         /*netif_stop_queue(dev); */
4425         flush_workqueue(priv->workqueue);
4426
4427         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
4428          * priv->workqueue... so we can't take down the workqueue
4429          * until now... */
4430         destroy_workqueue(priv->workqueue);
4431         priv->workqueue = NULL;
4432
4433         pci_iounmap(pdev, priv->hw_base);
4434         pci_release_regions(pdev);
4435         pci_disable_device(pdev);
4436         pci_set_drvdata(pdev, NULL);
4437
4438         iwl_uninit_drv(priv);
4439
4440         if (priv->ibss_beacon)
4441                 dev_kfree_skb(priv->ibss_beacon);
4442
4443         ieee80211_free_hw(priv->hw);
4444 }
4445
4446 #ifdef CONFIG_PM
4447
4448 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
4449 {
4450         struct iwl_priv *priv = pci_get_drvdata(pdev);
4451
4452         if (priv->is_open) {
4453                 set_bit(STATUS_IN_SUSPEND, &priv->status);
4454                 iwl4965_mac_stop(priv->hw);
4455                 priv->is_open = 1;
4456         }
4457
4458         pci_set_power_state(pdev, PCI_D3hot);
4459
4460         return 0;
4461 }
4462
4463 static int iwl4965_pci_resume(struct pci_dev *pdev)
4464 {
4465         struct iwl_priv *priv = pci_get_drvdata(pdev);
4466
4467         pci_set_power_state(pdev, PCI_D0);
4468
4469         if (priv->is_open)
4470                 iwl4965_mac_start(priv->hw);
4471
4472         clear_bit(STATUS_IN_SUSPEND, &priv->status);
4473         return 0;
4474 }
4475
4476 #endif /* CONFIG_PM */
4477
4478 /*****************************************************************************
4479  *
4480  * driver and module entry point
4481  *
4482  *****************************************************************************/
4483
4484 /* Hardware specific file defines the PCI IDs table for that hardware module */
4485 static struct pci_device_id iwl_hw_card_ids[] = {
4486 #ifdef CONFIG_IWL4965
4487         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
4488         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
4489 #endif /* CONFIG_IWL4965 */
4490 #ifdef CONFIG_IWL5000
4491         {IWL_PCI_DEVICE(0x4232, 0x1205, iwl5100_bg_cfg)},
4492         {IWL_PCI_DEVICE(0x4232, 0x1305, iwl5100_bg_cfg)},
4493         {IWL_PCI_DEVICE(0x4232, 0x1206, iwl5100_abg_cfg)},
4494         {IWL_PCI_DEVICE(0x4232, 0x1306, iwl5100_abg_cfg)},
4495         {IWL_PCI_DEVICE(0x4232, 0x1326, iwl5100_abg_cfg)},
4496         {IWL_PCI_DEVICE(0x4237, 0x1216, iwl5100_abg_cfg)},
4497         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
4498         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
4499         {IWL_PCI_DEVICE(0x4236, PCI_ANY_ID, iwl5300_agn_cfg)},
4500         {IWL_PCI_DEVICE(0x4237, PCI_ANY_ID, iwl5100_agn_cfg)},
4501 /* 5350 WiFi/WiMax */
4502         {IWL_PCI_DEVICE(0x423A, 0x1001, iwl5350_agn_cfg)},
4503         {IWL_PCI_DEVICE(0x423A, 0x1021, iwl5350_agn_cfg)},
4504         {IWL_PCI_DEVICE(0x423B, 0x1011, iwl5350_agn_cfg)},
4505 #endif /* CONFIG_IWL5000 */
4506         {0}
4507 };
4508 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
4509
4510 static struct pci_driver iwl_driver = {
4511         .name = DRV_NAME,
4512         .id_table = iwl_hw_card_ids,
4513         .probe = iwl4965_pci_probe,
4514         .remove = __devexit_p(iwl4965_pci_remove),
4515 #ifdef CONFIG_PM
4516         .suspend = iwl4965_pci_suspend,
4517         .resume = iwl4965_pci_resume,
4518 #endif
4519 };
4520
4521 static int __init iwl4965_init(void)
4522 {
4523
4524         int ret;
4525         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
4526         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
4527
4528         ret = iwlagn_rate_control_register();
4529         if (ret) {
4530                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
4531                 return ret;
4532         }
4533
4534         ret = pci_register_driver(&iwl_driver);
4535         if (ret) {
4536                 IWL_ERROR("Unable to initialize PCI module\n");
4537                 goto error_register;
4538         }
4539
4540         return ret;
4541
4542 error_register:
4543         iwlagn_rate_control_unregister();
4544         return ret;
4545 }
4546
4547 static void __exit iwl4965_exit(void)
4548 {
4549         pci_unregister_driver(&iwl_driver);
4550         iwlagn_rate_control_unregister();
4551 }
4552
4553 module_exit(iwl4965_exit);
4554 module_init(iwl4965_init);