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

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
   4  *
   5  * Portions of this file are derived from the ipw3945 project, as well
   6  * as portions of the ieee80211 subsystem header files.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of version 2 of the GNU General Public License as
  10  * published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful, but WITHOUT
  13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  15  * more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along with
  18  * this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  20  *
  21  * The full GNU General Public License is included in this distribution in the
  22  * file called LICENSE.
  23  *
  24  * Contact Information:
  25  * James P. Ketrenos <ipw2100-admin@linux.intel.com>
  26  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  27  *
  28  *****************************************************************************/
  29
  30 #include <linux/kernel.h>
  31 #include <linux/module.h>
  32 #include <linux/version.h>
  33 #include <linux/init.h>
  34 #include <linux/pci.h>
  35 #include <linux/dma-mapping.h>
  36 #include <linux/delay.h>
  37 #include <linux/skbuff.h>
  38 #include <linux/netdevice.h>
  39 #include <linux/wireless.h>
  40 #include <linux/firmware.h>
  41 #include <linux/etherdevice.h>
  42 #include <linux/if_arp.h>
  43
  44 #include <net/mac80211.h>
  45
  46 #include <asm/div64.h>
  47
  48 #include "iwl-eeprom.h"
  49 #include "iwl-dev.h"
  50 #include "iwl-core.h"
  51 #include "iwl-io.h"
  52 #include "iwl-helpers.h"
  53 #include "iwl-sta.h"
  54 #include "iwl-calib.h"
  55
  56
  57 /******************************************************************************
  58  *
  59  * module boiler plate
  60  *
  61  ******************************************************************************/
  62
  63 /*
  64  * module name, copyright, version, etc.
  65  * NOTE: DRV_NAME is defined in iwlwifi.h for use by iwl-debug.h and printk
  66  */
  67
  68 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link 4965AGN driver for Linux"
  69
  70 #ifdef CONFIG_IWLWIFI_DEBUG
  71 #define VD "d"
  72 #else
  73 #define VD
  74 #endif
  75
  76 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
  77 #define VS "s"
  78 #else
  79 #define VS
  80 #endif
  81
  82 #define DRV_VERSION     IWLWIFI_VERSION VD VS
  83
  84
  85 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  86 MODULE_VERSION(DRV_VERSION);
  87 MODULE_AUTHOR(DRV_COPYRIGHT);
  88 MODULE_LICENSE("GPL");
  89
  90 static const struct ieee80211_supported_band *iwl_get_hw_mode(
  91                 struct iwl_priv *priv, enum ieee80211_band band)
  92 {
  93         return priv->hw->wiphy->bands[band];
  94 }
  95
  96 static int iwl4965_is_empty_essid(const char *essid, int essid_len)
  97 {
  98         /* Single white space is for Linksys APs */
  99         if (essid_len == 1 && essid[0] == ' ')
 100                 return 1;
 101
 102         /* Otherwise, if the entire essid is 0, we assume it is hidden */
 103         while (essid_len) {
 104                 essid_len--;
 105                 if (essid[essid_len] != '\0')
 106                         return 0;
 107         }
 108
 109         return 1;
 110 }
 111
 112 static const char *iwl4965_escape_essid(const char *essid, u8 essid_len)
 113 {
 114         static char escaped[IW_ESSID_MAX_SIZE * 2 + 1];
 115         const char *s = essid;
 116         char *d = escaped;
 117
 118         if (iwl4965_is_empty_essid(essid, essid_len)) {
 119                 memcpy(escaped, "<hidden>", sizeof("<hidden>"));
 120                 return escaped;
 121         }
 122
 123         essid_len = min(essid_len, (u8) IW_ESSID_MAX_SIZE);
 124         while (essid_len--) {
 125                 if (*s == '\0') {
 126                         *d++ = '\\';
 127                         *d++ = '0';
 128                         s++;
 129                 } else
 130                         *d++ = *s++;
 131         }
 132         *d = '\0';
 133         return escaped;
 134 }
 135
 136 /*************** STATION TABLE MANAGEMENT ****
 137  * mac80211 should be examined to determine if sta_info is duplicating
 138  * the functionality provided here
 139  */
 140
 141 /**************************************************************/
 142
 143 #if 0 /* temporary disable till we add real remove station */
 144 /**
 145  * iwl4965_remove_station - Remove driver's knowledge of station.
 146  *
 147  * NOTE:  This does not remove station from device's station table.
 148  */
 149 static u8 iwl4965_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
 150 {
 151         int index = IWL_INVALID_STATION;
 152         int i;
 153         unsigned long flags;
 154
 155         spin_lock_irqsave(&priv->sta_lock, flags);
 156
 157         if (is_ap)
 158                 index = IWL_AP_ID;
 159         else if (is_broadcast_ether_addr(addr))
 160                 index = priv->hw_params.bcast_sta_id;
 161         else
 162                 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
 163                         if (priv->stations[i].used &&
 164                             !compare_ether_addr(priv->stations[i].sta.sta.addr,
 165                                                 addr)) {
 166                                 index = i;
 167                                 break;
 168                         }
 169
 170         if (unlikely(index == IWL_INVALID_STATION))
 171                 goto out;
 172
 173         if (priv->stations[index].used) {
 174                 priv->stations[index].used = 0;
 175                 priv->num_stations--;
 176         }
 177
 178         BUG_ON(priv->num_stations < 0);
 179
 180 out:
 181         spin_unlock_irqrestore(&priv->sta_lock, flags);
 182         return 0;
 183 }
 184 #endif
 185
 186
 187
 188 static void iwl4965_set_rxon_hwcrypto(struct iwl_priv *priv, int hw_decrypt)
 189 {
 190         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
 191
 192         if (hw_decrypt)
 193                 rxon->filter_flags &= ~RXON_FILTER_DIS_DECRYPT_MSK;
 194         else
 195                 rxon->filter_flags |= RXON_FILTER_DIS_DECRYPT_MSK;
 196
 197 }
 198
 199 /**
 200  * iwl4965_check_rxon_cmd - validate RXON structure is valid
 201  *
 202  * NOTE:  This is really only useful during development and can eventually
 203  * be #ifdef'd out once the driver is stable and folks aren't actively
 204  * making changes
 205  */
 206 static int iwl4965_check_rxon_cmd(struct iwl_rxon_cmd *rxon)
 207 {
 208         int error = 0;
 209         int counter = 1;
 210
 211         if (rxon->flags & RXON_FLG_BAND_24G_MSK) {
 212                 error |= le32_to_cpu(rxon->flags &
 213                                 (RXON_FLG_TGJ_NARROW_BAND_MSK |
 214                                  RXON_FLG_RADAR_DETECT_MSK));
 215                 if (error)
 216                         IWL_WARNING("check 24G fields %d | %d\n",
 217                                     counter++, error);
 218         } else {
 219                 error |= (rxon->flags & RXON_FLG_SHORT_SLOT_MSK) ?
 220                                 0 : le32_to_cpu(RXON_FLG_SHORT_SLOT_MSK);
 221                 if (error)
 222                         IWL_WARNING("check 52 fields %d | %d\n",
 223                                     counter++, error);
 224                 error |= le32_to_cpu(rxon->flags & RXON_FLG_CCK_MSK);
 225                 if (error)
 226                         IWL_WARNING("check 52 CCK %d | %d\n",
 227                                     counter++, error);
 228         }
 229         error |= (rxon->node_addr[0] | rxon->bssid_addr[0]) & 0x1;
 230         if (error)
 231                 IWL_WARNING("check mac addr %d | %d\n", counter++, error);
 232
 233         /* make sure basic rates 6Mbps and 1Mbps are supported */
 234         error |= (((rxon->ofdm_basic_rates & IWL_RATE_6M_MASK) == 0) &&
 235                   ((rxon->cck_basic_rates & IWL_RATE_1M_MASK) == 0));
 236         if (error)
 237                 IWL_WARNING("check basic rate %d | %d\n", counter++, error);
 238
 239         error |= (le16_to_cpu(rxon->assoc_id) > 2007);
 240         if (error)
 241                 IWL_WARNING("check assoc id %d | %d\n", counter++, error);
 242
 243         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK))
 244                         == (RXON_FLG_CCK_MSK | RXON_FLG_SHORT_SLOT_MSK));
 245         if (error)
 246                 IWL_WARNING("check CCK and short slot %d | %d\n",
 247                             counter++, error);
 248
 249         error |= ((rxon->flags & (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK))
 250                         == (RXON_FLG_CCK_MSK | RXON_FLG_AUTO_DETECT_MSK));
 251         if (error)
 252                 IWL_WARNING("check CCK & auto detect %d | %d\n",
 253                             counter++, error);
 254
 255         error |= ((rxon->flags & (RXON_FLG_AUTO_DETECT_MSK |
 256                         RXON_FLG_TGG_PROTECT_MSK)) == RXON_FLG_TGG_PROTECT_MSK);
 257         if (error)
 258                 IWL_WARNING("check TGG and auto detect %d | %d\n",
 259                             counter++, error);
 260
 261         if (error)
 262                 IWL_WARNING("Tuning to channel %d\n",
 263                             le16_to_cpu(rxon->channel));
 264
 265         if (error) {
 266                 IWL_ERROR("Not a valid iwl4965_rxon_assoc_cmd field values\n");
 267                 return -1;
 268         }
 269         return 0;
 270 }
 271
 272 /**
 273  * iwl4965_full_rxon_required - check if full RXON (vs RXON_ASSOC) cmd is needed
 274  * @priv: staging_rxon is compared to active_rxon
 275  *
 276  * If the RXON structure is changing enough to require a new tune,
 277  * or is clearing the RXON_FILTER_ASSOC_MSK, then return 1 to indicate that
 278  * a new tune (full RXON command, rather than RXON_ASSOC cmd) is required.
 279  */
 280 static int iwl4965_full_rxon_required(struct iwl_priv *priv)
 281 {
 282
 283         /* These items are only settable from the full RXON command */
 284         if (!(priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) ||
 285             compare_ether_addr(priv->staging_rxon.bssid_addr,
 286                                priv->active_rxon.bssid_addr) ||
 287             compare_ether_addr(priv->staging_rxon.node_addr,
 288                                priv->active_rxon.node_addr) ||
 289             compare_ether_addr(priv->staging_rxon.wlap_bssid_addr,
 290                                priv->active_rxon.wlap_bssid_addr) ||
 291             (priv->staging_rxon.dev_type != priv->active_rxon.dev_type) ||
 292             (priv->staging_rxon.channel != priv->active_rxon.channel) ||
 293             (priv->staging_rxon.air_propagation !=
 294              priv->active_rxon.air_propagation) ||
 295             (priv->staging_rxon.ofdm_ht_single_stream_basic_rates !=
 296              priv->active_rxon.ofdm_ht_single_stream_basic_rates) ||
 297             (priv->staging_rxon.ofdm_ht_dual_stream_basic_rates !=
 298              priv->active_rxon.ofdm_ht_dual_stream_basic_rates) ||
 299             (priv->staging_rxon.rx_chain != priv->active_rxon.rx_chain) ||
 300             (priv->staging_rxon.assoc_id != priv->active_rxon.assoc_id))
 301                 return 1;
 302
 303         /* flags, filter_flags, ofdm_basic_rates, and cck_basic_rates can
 304          * be updated with the RXON_ASSOC command -- however only some
 305          * flag transitions are allowed using RXON_ASSOC */
 306
 307         /* Check if we are not switching bands */
 308         if ((priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) !=
 309             (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK))
 310                 return 1;
 311
 312         /* Check if we are switching association toggle */
 313         if ((priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) !=
 314                 (priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK))
 315                 return 1;
 316
 317         return 0;
 318 }
 319
 320 /**
 321  * iwl4965_commit_rxon - commit staging_rxon to hardware
 322  *
 323  * The RXON command in staging_rxon is committed to the hardware and
 324  * the active_rxon structure is updated with the new data.  This
 325  * function correctly transitions out of the RXON_ASSOC_MSK state if
 326  * a HW tune is required based on the RXON structure changes.
 327  */
 328 static int iwl4965_commit_rxon(struct iwl_priv *priv)
 329 {
 330         /* cast away the const for active_rxon in this function */
 331         struct iwl_rxon_cmd *active_rxon = (void *)&priv->active_rxon;
 332         DECLARE_MAC_BUF(mac);
 333         int rc = 0;
 334
 335         if (!iwl_is_alive(priv))
 336                 return -1;
 337
 338         /* always get timestamp with Rx frame */
 339         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
 340
 341         rc = iwl4965_check_rxon_cmd(&priv->staging_rxon);
 342         if (rc) {
 343                 IWL_ERROR("Invalid RXON configuration.  Not committing.\n");
 344                 return -EINVAL;
 345         }
 346
 347         /* If we don't need to send a full RXON, we can use
 348          * iwl4965_rxon_assoc_cmd which is used to reconfigure filter
 349          * and other flags for the current radio configuration. */
 350         if (!iwl4965_full_rxon_required(priv)) {
 351                 rc = iwl_send_rxon_assoc(priv);
 352                 if (rc) {
 353                         IWL_ERROR("Error setting RXON_ASSOC "
 354                                   "configuration (%d).\n", rc);
 355                         return rc;
 356                 }
 357
 358                 memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 359
 360                 return 0;
 361         }
 362
 363         /* station table will be cleared */
 364         priv->assoc_station_added = 0;
 365
 366         /* If we are currently associated and the new config requires
 367          * an RXON_ASSOC and the new config wants the associated mask enabled,
 368          * we must clear the associated from the active configuration
 369          * before we apply the new config */
 370         if (iwl_is_associated(priv) &&
 371             (priv->staging_rxon.filter_flags & RXON_FILTER_ASSOC_MSK)) {
 372                 IWL_DEBUG_INFO("Toggling associated bit on current RXON\n");
 373                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
 374
 375                 rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 376                                       sizeof(struct iwl_rxon_cmd),
 377                                       &priv->active_rxon);
 378
 379                 /* If the mask clearing failed then we set
 380                  * active_rxon back to what it was previously */
 381                 if (rc) {
 382                         active_rxon->filter_flags |= RXON_FILTER_ASSOC_MSK;
 383                         IWL_ERROR("Error clearing ASSOC_MSK on current "
 384                                   "configuration (%d).\n", rc);
 385                         return rc;
 386                 }
 387         }
 388
 389         IWL_DEBUG_INFO("Sending RXON\n"
 390                        "* with%s RXON_FILTER_ASSOC_MSK\n"
 391                        "* channel = %d\n"
 392                        "* bssid = %s\n",
 393                        ((priv->staging_rxon.filter_flags &
 394                          RXON_FILTER_ASSOC_MSK) ? "" : "out"),
 395                        le16_to_cpu(priv->staging_rxon.channel),
 396                        print_mac(mac, priv->staging_rxon.bssid_addr));
 397
 398         iwl4965_set_rxon_hwcrypto(priv, !priv->hw_params.sw_crypto);
 399         /* Apply the new configuration */
 400         rc = iwl_send_cmd_pdu(priv, REPLY_RXON,
 401                               sizeof(struct iwl_rxon_cmd), &priv->staging_rxon);
 402         if (rc) {
 403                 IWL_ERROR("Error setting new configuration (%d).\n", rc);
 404                 return rc;
 405         }
 406
 407         iwlcore_clear_stations_table(priv);
 408
 409         if (!priv->error_recovering)
 410                 priv->start_calib = 0;
 411
 412         iwl_init_sensitivity(priv);
 413
 414         memcpy(active_rxon, &priv->staging_rxon, sizeof(*active_rxon));
 415
 416         /* If we issue a new RXON command which required a tune then we must
 417          * send a new TXPOWER command or we won't be able to Tx any frames */
 418         rc = iwl4965_hw_reg_send_txpower(priv);
 419         if (rc) {
 420                 IWL_ERROR("Error setting Tx power (%d).\n", rc);
 421                 return rc;
 422         }
 423
 424         /* Add the broadcast address so we can send broadcast frames */
 425         if (iwl_rxon_add_station(priv, iwl_bcast_addr, 0) ==
 426             IWL_INVALID_STATION) {
 427                 IWL_ERROR("Error adding BROADCAST address for transmit.\n");
 428                 return -EIO;
 429         }
 430
 431         /* If we have set the ASSOC_MSK and we are in BSS mode then
 432          * add the IWL_AP_ID to the station rate table */
 433         if (iwl_is_associated(priv) &&
 434             (priv->iw_mode == IEEE80211_IF_TYPE_STA)) {
 435                 if (iwl_rxon_add_station(priv, priv->active_rxon.bssid_addr, 1)
 436                     == IWL_INVALID_STATION) {
 437                         IWL_ERROR("Error adding AP address for transmit.\n");
 438                         return -EIO;
 439                 }
 440                 priv->assoc_station_added = 1;
 441                 if (priv->default_wep_key &&
 442                     iwl_send_static_wepkey_cmd(priv, 0))
 443                         IWL_ERROR("Could not send WEP static key.\n");
 444         }
 445
 446         return 0;
 447 }
 448
 449 void iwl4965_update_chain_flags(struct iwl_priv *priv)
 450 {
 451
 452         iwl_set_rxon_chain(priv);
 453         iwl4965_commit_rxon(priv);
 454 }
 455
 456 static int iwl4965_send_bt_config(struct iwl_priv *priv)
 457 {
 458         struct iwl4965_bt_cmd bt_cmd = {
 459                 .flags = 3,
 460                 .lead_time = 0xAA,
 461                 .max_kill = 1,
 462                 .kill_ack_mask = 0,
 463                 .kill_cts_mask = 0,
 464         };
 465
 466         return iwl_send_cmd_pdu(priv, REPLY_BT_CONFIG,
 467                                 sizeof(struct iwl4965_bt_cmd), &bt_cmd);
 468 }
 469
 470 static int iwl4965_send_scan_abort(struct iwl_priv *priv)
 471 {
 472         int ret = 0;
 473         struct iwl_rx_packet *res;
 474         struct iwl_host_cmd cmd = {
 475                 .id = REPLY_SCAN_ABORT_CMD,
 476                 .meta.flags = CMD_WANT_SKB,
 477         };
 478
 479         /* If there isn't a scan actively going on in the hardware
 480          * then we are in between scan bands and not actually
 481          * actively scanning, so don't send the abort command */
 482         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 483                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 484                 return 0;
 485         }
 486
 487         ret = iwl_send_cmd_sync(priv, &cmd);
 488         if (ret) {
 489                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 490                 return ret;
 491         }
 492
 493         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
 494         if (res->u.status != CAN_ABORT_STATUS) {
 495                 /* The scan abort will return 1 for success or
 496                  * 2 for "failure".  A failure condition can be
 497                  * due to simply not being in an active scan which
 498                  * can occur if we send the scan abort before we
 499                  * the microcode has notified us that a scan is
 500                  * completed. */
 501                 IWL_DEBUG_INFO("SCAN_ABORT returned %d.\n", res->u.status);
 502                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
 503                 clear_bit(STATUS_SCAN_HW, &priv->status);
 504         }
 505
 506         dev_kfree_skb_any(cmd.meta.u.skb);
 507
 508         return ret;
 509 }
 510
 511 /*
 512  * CARD_STATE_CMD
 513  *
 514  * Use: Sets the device's internal card state to enable, disable, or halt
 515  *
 516  * When in the 'enable' state the card operates as normal.
 517  * When in the 'disable' state, the card enters into a low power mode.
 518  * When in the 'halt' state, the card is shut down and must be fully
 519  * restarted to come back on.
 520  */
 521 static int iwl4965_send_card_state(struct iwl_priv *priv, u32 flags, u8 meta_flag)
 522 {
 523         struct iwl_host_cmd cmd = {
 524                 .id = REPLY_CARD_STATE_CMD,
 525                 .len = sizeof(u32),
 526                 .data = &flags,
 527                 .meta.flags = meta_flag,
 528         };
 529
 530         return iwl_send_cmd(priv, &cmd);
 531 }
 532
 533 static void iwl_clear_free_frames(struct iwl_priv *priv)
 534 {
 535         struct list_head *element;
 536
 537         IWL_DEBUG_INFO("%d frames on pre-allocated heap on clear.\n",
 538                        priv->frames_count);
 539
 540         while (!list_empty(&priv->free_frames)) {
 541                 element = priv->free_frames.next;
 542                 list_del(element);
 543                 kfree(list_entry(element, struct iwl_frame, list));
 544                 priv->frames_count--;
 545         }
 546
 547         if (priv->frames_count) {
 548                 IWL_WARNING("%d frames still in use.  Did we lose one?\n",
 549                             priv->frames_count);
 550                 priv->frames_count = 0;
 551         }
 552 }
 553
 554 static struct iwl_frame *iwl_get_free_frame(struct iwl_priv *priv)
 555 {
 556         struct iwl_frame *frame;
 557         struct list_head *element;
 558         if (list_empty(&priv->free_frames)) {
 559                 frame = kzalloc(sizeof(*frame), GFP_KERNEL);
 560                 if (!frame) {
 561                         IWL_ERROR("Could not allocate frame!\n");
 562                         return NULL;
 563                 }
 564
 565                 priv->frames_count++;
 566                 return frame;
 567         }
 568
 569         element = priv->free_frames.next;
 570         list_del(element);
 571         return list_entry(element, struct iwl_frame, list);
 572 }
 573
 574 static void iwl_free_frame(struct iwl_priv *priv, struct iwl_frame *frame)
 575 {
 576         memset(frame, 0, sizeof(*frame));
 577         list_add(&frame->list, &priv->free_frames);
 578 }
 579
 580 unsigned int iwl4965_fill_beacon_frame(struct iwl_priv *priv,
 581                                 struct ieee80211_hdr *hdr,
 582                                 const u8 *dest, int left)
 583 {
 584
 585         if (!iwl_is_associated(priv) || !priv->ibss_beacon ||
 586             ((priv->iw_mode != IEEE80211_IF_TYPE_IBSS) &&
 587              (priv->iw_mode != IEEE80211_IF_TYPE_AP)))
 588                 return 0;
 589
 590         if (priv->ibss_beacon->len > left)
 591                 return 0;
 592
 593         memcpy(hdr, priv->ibss_beacon->data, priv->ibss_beacon->len);
 594
 595         return priv->ibss_beacon->len;
 596 }
 597
 598 static u8 iwl4965_rate_get_lowest_plcp(struct iwl_priv *priv)
 599 {
 600         int i;
 601         int rate_mask;
 602
 603         /* Set rate mask*/
 604         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 605                 rate_mask = priv->active_rate_basic & 0xF;
 606         else
 607                 rate_mask = priv->active_rate_basic & 0xFF0;
 608
 609         /* Find lowest valid rate */
 610         for (i = IWL_RATE_1M_INDEX; i != IWL_RATE_INVALID;
 611                                         i = iwl_rates[i].next_ieee) {
 612                 if (rate_mask & (1 << i))
 613                         return iwl_rates[i].plcp;
 614         }
 615
 616         /* No valid rate was found. Assign the lowest one */
 617         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK)
 618                 return IWL_RATE_1M_PLCP;
 619         else
 620                 return IWL_RATE_6M_PLCP;
 621 }
 622
 623 static int iwl4965_send_beacon_cmd(struct iwl_priv *priv)
 624 {
 625         struct iwl_frame *frame;
 626         unsigned int frame_size;
 627         int rc;
 628         u8 rate;
 629
 630         frame = iwl_get_free_frame(priv);
 631
 632         if (!frame) {
 633                 IWL_ERROR("Could not obtain free frame buffer for beacon "
 634                           "command.\n");
 635                 return -ENOMEM;
 636         }
 637
 638         rate = iwl4965_rate_get_lowest_plcp(priv);
 639
 640         frame_size = iwl4965_hw_get_beacon_cmd(priv, frame, rate);
 641
 642         rc = iwl_send_cmd_pdu(priv, REPLY_TX_BEACON, frame_size,
 643                               &frame->u.cmd[0]);
 644
 645         iwl_free_frame(priv, frame);
 646
 647         return rc;
 648 }
 649
 650 /******************************************************************************
 651  *
 652  * Misc. internal state and helper functions
 653  *
 654  ******************************************************************************/
 655
 656 /**
 657  * iwl4965_supported_rate_to_ie - fill in the supported rate in IE field
 658  *
 659  * return : set the bit for each supported rate insert in ie
 660  */
 661 static u16 iwl4965_supported_rate_to_ie(u8 *ie, u16 supported_rate,
 662                                     u16 basic_rate, int *left)
 663 {
 664         u16 ret_rates = 0, bit;
 665         int i;
 666         u8 *cnt = ie;
 667         u8 *rates = ie + 1;
 668
 669         for (bit = 1, i = 0; i < IWL_RATE_COUNT; i++, bit <<= 1) {
 670                 if (bit & supported_rate) {
 671                         ret_rates |= bit;
 672                         rates[*cnt] = iwl_rates[i].ieee |
 673                                 ((bit & basic_rate) ? 0x80 : 0x00);
 674                         (*cnt)++;
 675                         (*left)--;
 676                         if ((*left <= 0) ||
 677                             (*cnt >= IWL_SUPPORTED_RATES_IE_LEN))
 678                                 break;
 679                 }
 680         }
 681
 682         return ret_rates;
 683 }
 684
 685 #ifdef CONFIG_IWL4965_HT
 686 static void iwl4965_ht_conf(struct iwl_priv *priv,
 687                             struct ieee80211_bss_conf *bss_conf)
 688 {
 689         struct ieee80211_ht_info *ht_conf = bss_conf->ht_conf;
 690         struct ieee80211_ht_bss_info *ht_bss_conf = bss_conf->ht_bss_conf;
 691         struct iwl_ht_info *iwl_conf = &priv->current_ht_config;
 692
 693         IWL_DEBUG_MAC80211("enter: \n");
 694
 695         iwl_conf->is_ht = bss_conf->assoc_ht;
 696
 697         if (!iwl_conf->is_ht)
 698                 return;
 699
 700         priv->ps_mode = (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 701
 702         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_20)
 703                 iwl_conf->sgf |= HT_SHORT_GI_20MHZ;
 704         if (ht_conf->cap & IEEE80211_HT_CAP_SGI_40)
 705                 iwl_conf->sgf |= HT_SHORT_GI_40MHZ;
 706
 707         iwl_conf->is_green_field = !!(ht_conf->cap & IEEE80211_HT_CAP_GRN_FLD);
 708         iwl_conf->max_amsdu_size =
 709                 !!(ht_conf->cap & IEEE80211_HT_CAP_MAX_AMSDU);
 710
 711         iwl_conf->supported_chan_width =
 712                 !!(ht_conf->cap & IEEE80211_HT_CAP_SUP_WIDTH);
 713         iwl_conf->extension_chan_offset =
 714                 ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_SEC_OFFSET;
 715         /* If no above or below channel supplied disable FAT channel */
 716         if (iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_ABOVE &&
 717             iwl_conf->extension_chan_offset != IWL_EXT_CHANNEL_OFFSET_BELOW)
 718                 iwl_conf->supported_chan_width = 0;
 719
 720         iwl_conf->tx_mimo_ps_mode =
 721                 (u8)((ht_conf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2);
 722         memcpy(iwl_conf->supp_mcs_set, ht_conf->supp_mcs_set, 16);
 723
 724         iwl_conf->control_channel = ht_bss_conf->primary_channel;
 725         iwl_conf->tx_chan_width =
 726                 !!(ht_bss_conf->bss_cap & IEEE80211_HT_IE_CHA_WIDTH);
 727         iwl_conf->ht_protection =
 728                 ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_HT_PROTECTION;
 729         iwl_conf->non_GF_STA_present =
 730                 !!(ht_bss_conf->bss_op_mode & IEEE80211_HT_IE_NON_GF_STA_PRSNT);
 731
 732         IWL_DEBUG_MAC80211("control channel %d\n", iwl_conf->control_channel);
 733         IWL_DEBUG_MAC80211("leave\n");
 734 }
 735
 736 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 737                         u8 *pos, int *left)
 738 {
 739         struct ieee80211_ht_cap *ht_cap;
 740
 741         if (!sband || !sband->ht_info.ht_supported)
 742                 return;
 743
 744         if (*left < sizeof(struct ieee80211_ht_cap))
 745                 return;
 746
 747         *pos++ = sizeof(struct ieee80211_ht_cap);
 748         ht_cap = (struct ieee80211_ht_cap *) pos;
 749
 750         ht_cap->cap_info = cpu_to_le16(sband->ht_info.cap);
 751         memcpy(ht_cap->supp_mcs_set, sband->ht_info.supp_mcs_set, 16);
 752         ht_cap->ampdu_params_info =
 753                 (sband->ht_info.ampdu_factor & IEEE80211_HT_CAP_AMPDU_FACTOR) |
 754                 ((sband->ht_info.ampdu_density << 2) &
 755                         IEEE80211_HT_CAP_AMPDU_DENSITY);
 756         *left -= sizeof(struct ieee80211_ht_cap);
 757 }
 758 #else
 759 static inline void iwl4965_ht_conf(struct iwl_priv *priv,
 760                                    struct ieee80211_bss_conf *bss_conf)
 761 {
 762 }
 763 static void iwl_ht_cap_to_ie(const struct ieee80211_supported_band *sband,
 764                         u8 *pos, int *left)
 765 {
 766 }
 767 #endif
 768
 769
 770 /**
 771  * iwl4965_fill_probe_req - fill in all required fields and IE for probe request
 772  */
 773 static u16 iwl4965_fill_probe_req(struct iwl_priv *priv,
 774                                   enum ieee80211_band band,
 775                                   struct ieee80211_mgmt *frame,
 776                                   int left, int is_direct)
 777 {
 778         int len = 0;
 779         u8 *pos = NULL;
 780         u16 active_rates, ret_rates, cck_rates, active_rate_basic;
 781         const struct ieee80211_supported_band *sband =
 782                                                 iwl_get_hw_mode(priv, band);
 783
 784         /* Make sure there is enough space for the probe request,
 785          * two mandatory IEs and the data */
 786         left -= 24;
 787         if (left < 0)
 788                 return 0;
 789         len += 24;
 790
 791         frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 792         memcpy(frame->da, iwl_bcast_addr, ETH_ALEN);
 793         memcpy(frame->sa, priv->mac_addr, ETH_ALEN);
 794         memcpy(frame->bssid, iwl_bcast_addr, ETH_ALEN);
 795         frame->seq_ctrl = 0;
 796
 797         /* fill in our indirect SSID IE */
 798         /* ...next IE... */
 799
 800         left -= 2;
 801         if (left < 0)
 802                 return 0;
 803         len += 2;
 804         pos = &(frame->u.probe_req.variable[0]);
 805         *pos++ = WLAN_EID_SSID;
 806         *pos++ = 0;
 807
 808         /* fill in our direct SSID IE... */
 809         if (is_direct) {
 810                 /* ...next IE... */
 811                 left -= 2 + priv->essid_len;
 812                 if (left < 0)
 813                         return 0;
 814                 /* ... fill it in... */
 815                 *pos++ = WLAN_EID_SSID;
 816                 *pos++ = priv->essid_len;
 817                 memcpy(pos, priv->essid, priv->essid_len);
 818                 pos += priv->essid_len;
 819                 len += 2 + priv->essid_len;
 820         }
 821
 822         /* fill in supported rate */
 823         /* ...next IE... */
 824         left -= 2;
 825         if (left < 0)
 826                 return 0;
 827
 828         /* ... fill it in... */
 829         *pos++ = WLAN_EID_SUPP_RATES;
 830         *pos = 0;
 831
 832         /* exclude 60M rate */
 833         active_rates = priv->rates_mask;
 834         active_rates &= ~IWL_RATE_60M_MASK;
 835
 836         active_rate_basic = active_rates & IWL_BASIC_RATES_MASK;
 837
 838         cck_rates = IWL_CCK_RATES_MASK & active_rates;
 839         ret_rates = iwl4965_supported_rate_to_ie(pos, cck_rates,
 840                         active_rate_basic, &left);
 841         active_rates &= ~ret_rates;
 842
 843         ret_rates = iwl4965_supported_rate_to_ie(pos, active_rates,
 844                                  active_rate_basic, &left);
 845         active_rates &= ~ret_rates;
 846
 847         len += 2 + *pos;
 848         pos += (*pos) + 1;
 849         if (active_rates == 0)
 850                 goto fill_end;
 851
 852         /* fill in supported extended rate */
 853         /* ...next IE... */
 854         left -= 2;
 855         if (left < 0)
 856                 return 0;
 857         /* ... fill it in... */
 858         *pos++ = WLAN_EID_EXT_SUPP_RATES;
 859         *pos = 0;
 860         iwl4965_supported_rate_to_ie(pos, active_rates,
 861                                  active_rate_basic, &left);
 862         if (*pos > 0)
 863                 len += 2 + *pos;
 864
 865  fill_end:
 866         /* fill in HT IE */
 867         left -= 2;
 868         if (left < 0)
 869                 return 0;
 870
 871         *pos++ = WLAN_EID_HT_CAPABILITY;
 872         *pos = 0;
 873
 874         iwl_ht_cap_to_ie(sband, pos, &left);
 875
 876         if (*pos > 0)
 877                 len += 2 + *pos;
 878         return (u16)len;
 879 }
 880
 881 /*
 882  * QoS  support
 883 */
 884 static int iwl4965_send_qos_params_command(struct iwl_priv *priv,
 885                                        struct iwl4965_qosparam_cmd *qos)
 886 {
 887
 888         return iwl_send_cmd_pdu(priv, REPLY_QOS_PARAM,
 889                                 sizeof(struct iwl4965_qosparam_cmd), qos);
 890 }
 891
 892 static void iwl4965_activate_qos(struct iwl_priv *priv, u8 force)
 893 {
 894         unsigned long flags;
 895
 896         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
 897                 return;
 898
 899         if (!priv->qos_data.qos_enable)
 900                 return;
 901
 902         spin_lock_irqsave(&priv->lock, flags);
 903         priv->qos_data.def_qos_parm.qos_flags = 0;
 904
 905         if (priv->qos_data.qos_cap.q_AP.queue_request &&
 906             !priv->qos_data.qos_cap.q_AP.txop_request)
 907                 priv->qos_data.def_qos_parm.qos_flags |=
 908                         QOS_PARAM_FLG_TXOP_TYPE_MSK;
 909         if (priv->qos_data.qos_active)
 910                 priv->qos_data.def_qos_parm.qos_flags |=
 911                         QOS_PARAM_FLG_UPDATE_EDCA_MSK;
 912
 913 #ifdef CONFIG_IWL4965_HT
 914         if (priv->current_ht_config.is_ht)
 915                 priv->qos_data.def_qos_parm.qos_flags |= QOS_PARAM_FLG_TGN_MSK;
 916 #endif /* CONFIG_IWL4965_HT */
 917
 918         spin_unlock_irqrestore(&priv->lock, flags);
 919
 920         if (force || iwl_is_associated(priv)) {
 921                 IWL_DEBUG_QOS("send QoS cmd with Qos active=%d FLAGS=0x%X\n",
 922                                 priv->qos_data.qos_active,
 923                                 priv->qos_data.def_qos_parm.qos_flags);
 924
 925                 iwl4965_send_qos_params_command(priv,
 926                                 &(priv->qos_data.def_qos_parm));
 927         }
 928 }
 929
 930 int iwl4965_is_network_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
 931 {
 932         /* Filter incoming packets to determine if they are targeted toward
 933          * this network, discarding packets coming from ourselves */
 934         switch (priv->iw_mode) {
 935         case IEEE80211_IF_TYPE_IBSS: /* Header: Dest. | Source    | BSSID */
 936                 /* packets from our adapter are dropped (echo) */
 937                 if (!compare_ether_addr(header->addr2, priv->mac_addr))
 938                         return 0;
 939                 /* {broad,multi}cast packets to our IBSS go through */
 940                 if (is_multicast_ether_addr(header->addr1))
 941                         return !compare_ether_addr(header->addr3, priv->bssid);
 942                 /* packets to our adapter go through */
 943                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 944         case IEEE80211_IF_TYPE_STA: /* Header: Dest. | AP{BSSID} | Source */
 945                 /* packets from our adapter are dropped (echo) */
 946                 if (!compare_ether_addr(header->addr3, priv->mac_addr))
 947                         return 0;
 948                 /* {broad,multi}cast packets to our BSS go through */
 949                 if (is_multicast_ether_addr(header->addr1))
 950                         return !compare_ether_addr(header->addr2, priv->bssid);
 951                 /* packets to our adapter go through */
 952                 return !compare_ether_addr(header->addr1, priv->mac_addr);
 953         default:
 954                 break;
 955         }
 956
 957         return 1;
 958 }
 959
 960 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
 961
 962 static const char *iwl4965_get_tx_fail_reason(u32 status)
 963 {
 964         switch (status & TX_STATUS_MSK) {
 965         case TX_STATUS_SUCCESS:
 966                 return "SUCCESS";
 967                 TX_STATUS_ENTRY(SHORT_LIMIT);
 968                 TX_STATUS_ENTRY(LONG_LIMIT);
 969                 TX_STATUS_ENTRY(FIFO_UNDERRUN);
 970                 TX_STATUS_ENTRY(MGMNT_ABORT);
 971                 TX_STATUS_ENTRY(NEXT_FRAG);
 972                 TX_STATUS_ENTRY(LIFE_EXPIRE);
 973                 TX_STATUS_ENTRY(DEST_PS);
 974                 TX_STATUS_ENTRY(ABORTED);
 975                 TX_STATUS_ENTRY(BT_RETRY);
 976                 TX_STATUS_ENTRY(STA_INVALID);
 977                 TX_STATUS_ENTRY(FRAG_DROPPED);
 978                 TX_STATUS_ENTRY(TID_DISABLE);
 979                 TX_STATUS_ENTRY(FRAME_FLUSHED);
 980                 TX_STATUS_ENTRY(INSUFFICIENT_CF_POLL);
 981                 TX_STATUS_ENTRY(TX_LOCKED);
 982                 TX_STATUS_ENTRY(NO_BEACON_ON_RADAR);
 983         }
 984
 985         return "UNKNOWN";
 986 }
 987
 988 /**
 989  * iwl4965_scan_cancel - Cancel any currently executing HW scan
 990  *
 991  * NOTE: priv->mutex is not required before calling this function
 992  */
 993 static int iwl4965_scan_cancel(struct iwl_priv *priv)
 994 {
 995         if (!test_bit(STATUS_SCAN_HW, &priv->status)) {
 996                 clear_bit(STATUS_SCANNING, &priv->status);
 997                 return 0;
 998         }
 999
1000         if (test_bit(STATUS_SCANNING, &priv->status)) {
1001                 if (!test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1002                         IWL_DEBUG_SCAN("Queuing scan abort.\n");
1003                         set_bit(STATUS_SCAN_ABORTING, &priv->status);
1004                         queue_work(priv->workqueue, &priv->abort_scan);
1005
1006                 } else
1007                         IWL_DEBUG_SCAN("Scan abort already in progress.\n");
1008
1009                 return test_bit(STATUS_SCANNING, &priv->status);
1010         }
1011
1012         return 0;
1013 }
1014
1015 /**
1016  * iwl4965_scan_cancel_timeout - Cancel any currently executing HW scan
1017  * @ms: amount of time to wait (in milliseconds) for scan to abort
1018  *
1019  * NOTE: priv->mutex must be held before calling this function
1020  */
1021 static int iwl4965_scan_cancel_timeout(struct iwl_priv *priv, unsigned long ms)
1022 {
1023         unsigned long now = jiffies;
1024         int ret;
1025
1026         ret = iwl4965_scan_cancel(priv);
1027         if (ret && ms) {
1028                 mutex_unlock(&priv->mutex);
1029                 while (!time_after(jiffies, now + msecs_to_jiffies(ms)) &&
1030                                 test_bit(STATUS_SCANNING, &priv->status))
1031                         msleep(1);
1032                 mutex_lock(&priv->mutex);
1033
1034                 return test_bit(STATUS_SCANNING, &priv->status);
1035         }
1036
1037         return ret;
1038 }
1039
1040 static void iwl4965_sequence_reset(struct iwl_priv *priv)
1041 {
1042         /* Reset ieee stats */
1043
1044         /* We don't reset the net_device_stats (ieee->stats) on
1045          * re-association */
1046
1047         priv->last_seq_num = -1;
1048         priv->last_frag_num = -1;
1049         priv->last_packet_time = 0;
1050
1051         iwl4965_scan_cancel(priv);
1052 }
1053
1054 #define MAX_UCODE_BEACON_INTERVAL       4096
1055 #define INTEL_CONN_LISTEN_INTERVAL      __constant_cpu_to_le16(0xA)
1056
1057 static __le16 iwl4965_adjust_beacon_interval(u16 beacon_val)
1058 {
1059         u16 new_val = 0;
1060         u16 beacon_factor = 0;
1061
1062         beacon_factor =
1063             (beacon_val + MAX_UCODE_BEACON_INTERVAL)
1064                 / MAX_UCODE_BEACON_INTERVAL;
1065         new_val = beacon_val / beacon_factor;
1066
1067         return cpu_to_le16(new_val);
1068 }
1069
1070 static void iwl4965_setup_rxon_timing(struct iwl_priv *priv)
1071 {
1072         u64 interval_tm_unit;
1073         u64 tsf, result;
1074         unsigned long flags;
1075         struct ieee80211_conf *conf = NULL;
1076         u16 beacon_int = 0;
1077
1078         conf = ieee80211_get_hw_conf(priv->hw);
1079
1080         spin_lock_irqsave(&priv->lock, flags);
1081         priv->rxon_timing.timestamp.dw[1] = cpu_to_le32(priv->timestamp >> 32);
1082         priv->rxon_timing.timestamp.dw[0] =
1083                                 cpu_to_le32(priv->timestamp & 0xFFFFFFFF);
1084
1085         priv->rxon_timing.listen_interval = INTEL_CONN_LISTEN_INTERVAL;
1086
1087         tsf = priv->timestamp;
1088
1089         beacon_int = priv->beacon_int;
1090         spin_unlock_irqrestore(&priv->lock, flags);
1091
1092         if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
1093                 if (beacon_int == 0) {
1094                         priv->rxon_timing.beacon_interval = cpu_to_le16(100);
1095                         priv->rxon_timing.beacon_init_val = cpu_to_le32(102400);
1096                 } else {
1097                         priv->rxon_timing.beacon_interval =
1098                                 cpu_to_le16(beacon_int);
1099                         priv->rxon_timing.beacon_interval =
1100                             iwl4965_adjust_beacon_interval(
1101                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1102                 }
1103
1104                 priv->rxon_timing.atim_window = 0;
1105         } else {
1106                 priv->rxon_timing.beacon_interval =
1107                         iwl4965_adjust_beacon_interval(conf->beacon_int);
1108                 /* TODO: we need to get atim_window from upper stack
1109                  * for now we set to 0 */
1110                 priv->rxon_timing.atim_window = 0;
1111         }
1112
1113         interval_tm_unit =
1114                 (le16_to_cpu(priv->rxon_timing.beacon_interval) * 1024);
1115         result = do_div(tsf, interval_tm_unit);
1116         priv->rxon_timing.beacon_init_val =
1117             cpu_to_le32((u32) ((u64) interval_tm_unit - result));
1118
1119         IWL_DEBUG_ASSOC
1120             ("beacon interval %d beacon timer %d beacon tim %d\n",
1121                 le16_to_cpu(priv->rxon_timing.beacon_interval),
1122                 le32_to_cpu(priv->rxon_timing.beacon_init_val),
1123                 le16_to_cpu(priv->rxon_timing.atim_window));
1124 }
1125
1126 static int iwl4965_scan_initiate(struct iwl_priv *priv)
1127 {
1128         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
1129                 IWL_ERROR("APs don't scan.\n");
1130                 return 0;
1131         }
1132
1133         if (!iwl_is_ready_rf(priv)) {
1134                 IWL_DEBUG_SCAN("Aborting scan due to not ready.\n");
1135                 return -EIO;
1136         }
1137
1138         if (test_bit(STATUS_SCANNING, &priv->status)) {
1139                 IWL_DEBUG_SCAN("Scan already in progress.\n");
1140                 return -EAGAIN;
1141         }
1142
1143         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
1144                 IWL_DEBUG_SCAN("Scan request while abort pending.  "
1145                                "Queuing.\n");
1146                 return -EAGAIN;
1147         }
1148
1149         IWL_DEBUG_INFO("Starting scan...\n");
1150         priv->scan_bands = 2;
1151         set_bit(STATUS_SCANNING, &priv->status);
1152         priv->scan_start = jiffies;
1153         priv->scan_pass_start = priv->scan_start;
1154
1155         queue_work(priv->workqueue, &priv->request_scan);
1156
1157         return 0;
1158 }
1159
1160
1161 static void iwl4965_set_flags_for_phymode(struct iwl_priv *priv,
1162                                           enum ieee80211_band band)
1163 {
1164         if (band == IEEE80211_BAND_5GHZ) {
1165                 priv->staging_rxon.flags &=
1166                     ~(RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK
1167                       | RXON_FLG_CCK_MSK);
1168                 priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1169         } else {
1170                 /* Copied from iwl4965_post_associate() */
1171                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
1172                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
1173                 else
1174                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1175
1176                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
1177                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
1178
1179                 priv->staging_rxon.flags |= RXON_FLG_BAND_24G_MSK;
1180                 priv->staging_rxon.flags |= RXON_FLG_AUTO_DETECT_MSK;
1181                 priv->staging_rxon.flags &= ~RXON_FLG_CCK_MSK;
1182         }
1183 }
1184
1185 /*
1186  * initialize rxon structure with default values from eeprom
1187  */
1188 static void iwl4965_connection_init_rx_config(struct iwl_priv *priv)
1189 {
1190         const struct iwl_channel_info *ch_info;
1191
1192         memset(&priv->staging_rxon, 0, sizeof(priv->staging_rxon));
1193
1194         switch (priv->iw_mode) {
1195         case IEEE80211_IF_TYPE_AP:
1196                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_AP;
1197                 break;
1198
1199         case IEEE80211_IF_TYPE_STA:
1200                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_ESS;
1201                 priv->staging_rxon.filter_flags = RXON_FILTER_ACCEPT_GRP_MSK;
1202                 break;
1203
1204         case IEEE80211_IF_TYPE_IBSS:
1205                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_IBSS;
1206                 priv->staging_rxon.flags = RXON_FLG_SHORT_PREAMBLE_MSK;
1207                 priv->staging_rxon.filter_flags = RXON_FILTER_BCON_AWARE_MSK |
1208                                                   RXON_FILTER_ACCEPT_GRP_MSK;
1209                 break;
1210
1211         case IEEE80211_IF_TYPE_MNTR:
1212                 priv->staging_rxon.dev_type = RXON_DEV_TYPE_SNIFFER;
1213                 priv->staging_rxon.filter_flags = RXON_FILTER_PROMISC_MSK |
1214                     RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_ACCEPT_GRP_MSK;
1215                 break;
1216         default:
1217                 IWL_ERROR("Unsupported interface type %d\n", priv->iw_mode);
1218                 break;
1219         }
1220
1221 #if 0
1222         /* TODO:  Figure out when short_preamble would be set and cache from
1223          * that */
1224         if (!hw_to_local(priv->hw)->short_preamble)
1225                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
1226         else
1227                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
1228 #endif
1229
1230         ch_info = iwl_get_channel_info(priv, priv->band,
1231                                        le16_to_cpu(priv->staging_rxon.channel));
1232
1233         if (!ch_info)
1234                 ch_info = &priv->channel_info[0];
1235
1236         /*
1237          * in some case A channels are all non IBSS
1238          * in this case force B/G channel
1239          */
1240         if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) &&
1241             !(is_channel_ibss(ch_info)))
1242                 ch_info = &priv->channel_info[0];
1243
1244         priv->staging_rxon.channel = cpu_to_le16(ch_info->channel);
1245         priv->band = ch_info->band;
1246
1247         iwl4965_set_flags_for_phymode(priv, priv->band);
1248
1249         priv->staging_rxon.ofdm_basic_rates =
1250             (IWL_OFDM_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1251         priv->staging_rxon.cck_basic_rates =
1252             (IWL_CCK_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1253
1254         priv->staging_rxon.flags &= ~(RXON_FLG_CHANNEL_MODE_MIXED_MSK |
1255                                         RXON_FLG_CHANNEL_MODE_PURE_40_MSK);
1256         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1257         memcpy(priv->staging_rxon.wlap_bssid_addr, priv->mac_addr, ETH_ALEN);
1258         priv->staging_rxon.ofdm_ht_single_stream_basic_rates = 0xff;
1259         priv->staging_rxon.ofdm_ht_dual_stream_basic_rates = 0xff;
1260         iwl_set_rxon_chain(priv);
1261 }
1262
1263 static int iwl4965_set_mode(struct iwl_priv *priv, int mode)
1264 {
1265         if (mode == IEEE80211_IF_TYPE_IBSS) {
1266                 const struct iwl_channel_info *ch_info;
1267
1268                 ch_info = iwl_get_channel_info(priv,
1269                         priv->band,
1270                         le16_to_cpu(priv->staging_rxon.channel));
1271
1272                 if (!ch_info || !is_channel_ibss(ch_info)) {
1273                         IWL_ERROR("channel %d not IBSS channel\n",
1274                                   le16_to_cpu(priv->staging_rxon.channel));
1275                         return -EINVAL;
1276                 }
1277         }
1278
1279         priv->iw_mode = mode;
1280
1281         iwl4965_connection_init_rx_config(priv);
1282         memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
1283
1284         iwlcore_clear_stations_table(priv);
1285
1286         /* dont commit rxon if rf-kill is on*/
1287         if (!iwl_is_ready_rf(priv))
1288                 return -EAGAIN;
1289
1290         cancel_delayed_work(&priv->scan_check);
1291         if (iwl4965_scan_cancel_timeout(priv, 100)) {
1292                 IWL_WARNING("Aborted scan still in progress after 100ms\n");
1293                 IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
1294                 return -EAGAIN;
1295         }
1296
1297         iwl4965_commit_rxon(priv);
1298
1299         return 0;
1300 }
1301
1302 static void iwl4965_set_rate(struct iwl_priv *priv)
1303 {
1304         const struct ieee80211_supported_band *hw = NULL;
1305         struct ieee80211_rate *rate;
1306         int i;
1307
1308         hw = iwl_get_hw_mode(priv, priv->band);
1309         if (!hw) {
1310                 IWL_ERROR("Failed to set rate: unable to get hw mode\n");
1311                 return;
1312         }
1313
1314         priv->active_rate = 0;
1315         priv->active_rate_basic = 0;
1316
1317         for (i = 0; i < hw->n_bitrates; i++) {
1318                 rate = &(hw->bitrates[i]);
1319                 if (rate->hw_value < IWL_RATE_COUNT)
1320                         priv->active_rate |= (1 << rate->hw_value);
1321         }
1322
1323         IWL_DEBUG_RATE("Set active_rate = %0x, active_rate_basic = %0x\n",
1324                        priv->active_rate, priv->active_rate_basic);
1325
1326         /*
1327          * If a basic rate is configured, then use it (adding IWL_RATE_1M_MASK)
1328          * otherwise set it to the default of all CCK rates and 6, 12, 24 for
1329          * OFDM
1330          */
1331         if (priv->active_rate_basic & IWL_CCK_BASIC_RATES_MASK)
1332                 priv->staging_rxon.cck_basic_rates =
1333                     ((priv->active_rate_basic &
1334                       IWL_CCK_RATES_MASK) >> IWL_FIRST_CCK_RATE) & 0xF;
1335         else
1336                 priv->staging_rxon.cck_basic_rates =
1337                     (IWL_CCK_BASIC_RATES_MASK >> IWL_FIRST_CCK_RATE) & 0xF;
1338
1339         if (priv->active_rate_basic & IWL_OFDM_BASIC_RATES_MASK)
1340                 priv->staging_rxon.ofdm_basic_rates =
1341                     ((priv->active_rate_basic &
1342                       (IWL_OFDM_BASIC_RATES_MASK | IWL_RATE_6M_MASK)) >>
1343                       IWL_FIRST_OFDM_RATE) & 0xFF;
1344         else
1345                 priv->staging_rxon.ofdm_basic_rates =
1346                    (IWL_OFDM_BASIC_RATES_MASK >> IWL_FIRST_OFDM_RATE) & 0xFF;
1347 }
1348
1349 void iwl4965_radio_kill_sw(struct iwl_priv *priv, int disable_radio)
1350 {
1351         unsigned long flags;
1352
1353         if (!!disable_radio == test_bit(STATUS_RF_KILL_SW, &priv->status))
1354                 return;
1355
1356         IWL_DEBUG_RF_KILL("Manual SW RF KILL set to: RADIO %s\n",
1357                           disable_radio ? "OFF" : "ON");
1358
1359         if (disable_radio) {
1360                 iwl4965_scan_cancel(priv);
1361                 /* FIXME: This is a workaround for AP */
1362                 if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
1363                         spin_lock_irqsave(&priv->lock, flags);
1364                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
1365                                     CSR_UCODE_SW_BIT_RFKILL);
1366                         spin_unlock_irqrestore(&priv->lock, flags);
1367                         /* call the host command only if no hw rf-kill set */
1368                         if (!test_bit(STATUS_RF_KILL_HW, &priv->status) &&
1369                             iwl_is_ready(priv))
1370                                 iwl4965_send_card_state(priv,
1371                                                         CARD_STATE_CMD_DISABLE,
1372                                                         0);
1373                         set_bit(STATUS_RF_KILL_SW, &priv->status);
1374
1375                         /* make sure mac80211 stop sending Tx frame */
1376                         if (priv->mac80211_registered)
1377                                 ieee80211_stop_queues(priv->hw);
1378                 }
1379                 return;
1380         }
1381
1382         spin_lock_irqsave(&priv->lock, flags);
1383         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
1384
1385         clear_bit(STATUS_RF_KILL_SW, &priv->status);
1386         spin_unlock_irqrestore(&priv->lock, flags);
1387
1388         /* wake up ucode */
1389         msleep(10);
1390
1391         spin_lock_irqsave(&priv->lock, flags);
1392         iwl_read32(priv, CSR_UCODE_DRV_GP1);
1393         if (!iwl_grab_nic_access(priv))
1394                 iwl_release_nic_access(priv);
1395         spin_unlock_irqrestore(&priv->lock, flags);
1396
1397         if (test_bit(STATUS_RF_KILL_HW, &priv->status)) {
1398                 IWL_DEBUG_RF_KILL("Can not turn radio back on - "
1399                                   "disabled by HW switch\n");
1400                 return;
1401         }
1402
1403         queue_work(priv->workqueue, &priv->restart);
1404         return;
1405 }
1406
1407 #define IWL_PACKET_RETRY_TIME HZ
1408
1409 int iwl4965_is_duplicate_packet(struct iwl_priv *priv, struct ieee80211_hdr *header)
1410 {
1411         u16 sc = le16_to_cpu(header->seq_ctrl);
1412         u16 seq = (sc & IEEE80211_SCTL_SEQ) >> 4;
1413         u16 frag = sc & IEEE80211_SCTL_FRAG;
1414         u16 *last_seq, *last_frag;
1415         unsigned long *last_time;
1416
1417         switch (priv->iw_mode) {
1418         case IEEE80211_IF_TYPE_IBSS:{
1419                 struct list_head *p;
1420                 struct iwl4965_ibss_seq *entry = NULL;
1421                 u8 *mac = header->addr2;
1422                 int index = mac[5] & (IWL_IBSS_MAC_HASH_SIZE - 1);
1423
1424                 __list_for_each(p, &priv->ibss_mac_hash[index]) {
1425                         entry = list_entry(p, struct iwl4965_ibss_seq, list);
1426                         if (!compare_ether_addr(entry->mac, mac))
1427                                 break;
1428                 }
1429                 if (p == &priv->ibss_mac_hash[index]) {
1430                         entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
1431                         if (!entry) {
1432                                 IWL_ERROR("Cannot malloc new mac entry\n");
1433                                 return 0;
1434                         }
1435                         memcpy(entry->mac, mac, ETH_ALEN);
1436                         entry->seq_num = seq;
1437                         entry->frag_num = frag;
1438                         entry->packet_time = jiffies;
1439                         list_add(&entry->list, &priv->ibss_mac_hash[index]);
1440                         return 0;
1441                 }
1442                 last_seq = &entry->seq_num;
1443                 last_frag = &entry->frag_num;
1444                 last_time = &entry->packet_time;
1445                 break;
1446         }
1447         case IEEE80211_IF_TYPE_STA:
1448                 last_seq = &priv->last_seq_num;
1449                 last_frag = &priv->last_frag_num;
1450                 last_time = &priv->last_packet_time;
1451                 break;
1452         default:
1453                 return 0;
1454         }
1455         if ((*last_seq == seq) &&
1456             time_after(*last_time + IWL_PACKET_RETRY_TIME, jiffies)) {
1457                 if (*last_frag == frag)
1458                         goto drop;
1459                 if (*last_frag + 1 != frag)
1460                         /* out-of-order fragment */
1461                         goto drop;
1462         } else
1463                 *last_seq = seq;
1464
1465         *last_frag = frag;
1466         *last_time = jiffies;
1467         return 0;
1468
1469  drop:
1470         return 1;
1471 }
1472
1473 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
1474
1475 #include "iwl-spectrum.h"
1476
1477 #define BEACON_TIME_MASK_LOW    0x00FFFFFF
1478 #define BEACON_TIME_MASK_HIGH   0xFF000000
1479 #define TIME_UNIT               1024
1480
1481 /*
1482  * extended beacon time format
1483  * time in usec will be changed into a 32-bit value in 8:24 format
1484  * the high 1 byte is the beacon counts
1485  * the lower 3 bytes is the time in usec within one beacon interval
1486  */
1487
1488 static u32 iwl4965_usecs_to_beacons(u32 usec, u32 beacon_interval)
1489 {
1490         u32 quot;
1491         u32 rem;
1492         u32 interval = beacon_interval * 1024;
1493
1494         if (!interval || !usec)
1495                 return 0;
1496
1497         quot = (usec / interval) & (BEACON_TIME_MASK_HIGH >> 24);
1498         rem = (usec % interval) & BEACON_TIME_MASK_LOW;
1499
1500         return (quot << 24) + rem;
1501 }
1502
1503 /* base is usually what we get from ucode with each received frame,
1504  * the same as HW timer counter counting down
1505  */
1506
1507 static __le32 iwl4965_add_beacon_time(u32 base, u32 addon, u32 beacon_interval)
1508 {
1509         u32 base_low = base & BEACON_TIME_MASK_LOW;
1510         u32 addon_low = addon & BEACON_TIME_MASK_LOW;
1511         u32 interval = beacon_interval * TIME_UNIT;
1512         u32 res = (base & BEACON_TIME_MASK_HIGH) +
1513             (addon & BEACON_TIME_MASK_HIGH);
1514
1515         if (base_low > addon_low)
1516                 res += base_low - addon_low;
1517         else if (base_low < addon_low) {
1518                 res += interval + base_low - addon_low;
1519                 res += (1 << 24);
1520         } else
1521                 res += (1 << 24);
1522
1523         return cpu_to_le32(res);
1524 }
1525
1526 static int iwl4965_get_measurement(struct iwl_priv *priv,
1527                                struct ieee80211_measurement_params *params,
1528                                u8 type)
1529 {
1530         struct iwl4965_spectrum_cmd spectrum;
1531         struct iwl_rx_packet *res;
1532         struct iwl_host_cmd cmd = {
1533                 .id = REPLY_SPECTRUM_MEASUREMENT_CMD,
1534                 .data = (void *)&spectrum,
1535                 .meta.flags = CMD_WANT_SKB,
1536         };
1537         u32 add_time = le64_to_cpu(params->start_time);
1538         int rc;
1539         int spectrum_resp_status;
1540         int duration = le16_to_cpu(params->duration);
1541
1542         if (iwl_is_associated(priv))
1543                 add_time =
1544                     iwl4965_usecs_to_beacons(
1545                         le64_to_cpu(params->start_time) - priv->last_tsf,
1546                         le16_to_cpu(priv->rxon_timing.beacon_interval));
1547
1548         memset(&spectrum, 0, sizeof(spectrum));
1549
1550         spectrum.channel_count = cpu_to_le16(1);
1551         spectrum.flags =
1552             RXON_FLG_TSF2HOST_MSK | RXON_FLG_ANT_A_MSK | RXON_FLG_DIS_DIV_MSK;
1553         spectrum.filter_flags = MEASUREMENT_FILTER_FLAG;
1554         cmd.len = sizeof(spectrum);
1555         spectrum.len = cpu_to_le16(cmd.len - sizeof(spectrum.len));
1556
1557         if (iwl_is_associated(priv))
1558                 spectrum.start_time =
1559                     iwl4965_add_beacon_time(priv->last_beacon_time,
1560                                 add_time,
1561                                 le16_to_cpu(priv->rxon_timing.beacon_interval));
1562         else
1563                 spectrum.start_time = 0;
1564
1565         spectrum.channels[0].duration = cpu_to_le32(duration * TIME_UNIT);
1566         spectrum.channels[0].channel = params->channel;
1567         spectrum.channels[0].type = type;
1568         if (priv->active_rxon.flags & RXON_FLG_BAND_24G_MSK)
1569                 spectrum.flags |= RXON_FLG_BAND_24G_MSK |
1570                     RXON_FLG_AUTO_DETECT_MSK | RXON_FLG_TGG_PROTECT_MSK;
1571
1572         rc = iwl_send_cmd_sync(priv, &cmd);
1573         if (rc)
1574                 return rc;
1575
1576         res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
1577         if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
1578                 IWL_ERROR("Bad return from REPLY_RX_ON_ASSOC command\n");
1579                 rc = -EIO;
1580         }
1581
1582         spectrum_resp_status = le16_to_cpu(res->u.spectrum.status);
1583         switch (spectrum_resp_status) {
1584         case 0:         /* Command will be handled */
1585                 if (res->u.spectrum.id != 0xff) {
1586                         IWL_DEBUG_INFO
1587                             ("Replaced existing measurement: %d\n",
1588                              res->u.spectrum.id);
1589                         priv->measurement_status &= ~MEASUREMENT_READY;
1590                 }
1591                 priv->measurement_status |= MEASUREMENT_ACTIVE;
1592                 rc = 0;
1593                 break;
1594
1595         case 1:         /* Command will not be handled */
1596                 rc = -EAGAIN;
1597                 break;
1598         }
1599
1600         dev_kfree_skb_any(cmd.meta.u.skb);
1601
1602         return rc;
1603 }
1604 #endif
1605
1606 static void iwl4965_txstatus_to_ieee(struct iwl_priv *priv,
1607                                      struct iwl_tx_info *tx_sta)
1608 {
1609
1610         tx_sta->status.ack_signal = 0;
1611         tx_sta->status.excessive_retries = 0;
1612
1613         if (in_interrupt())
1614                 ieee80211_tx_status_irqsafe(priv->hw,
1615                                             tx_sta->skb[0], &(tx_sta->status));
1616         else
1617                 ieee80211_tx_status(priv->hw,
1618                                     tx_sta->skb[0], &(tx_sta->status));
1619
1620         tx_sta->skb[0] = NULL;
1621 }
1622
1623 /**
1624  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1625  *
1626  * When FW advances 'R' index, all entries between old and new 'R' index
1627  * need to be reclaimed. As result, some free space forms.  If there is
1628  * enough free space (> low mark), wake the stack that feeds us.
1629  */
1630 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1631 {
1632         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1633         struct iwl_queue *q = &txq->q;
1634         int nfreed = 0;
1635
1636         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1637                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1638                           "is out of range [0-%d] %d %d.\n", txq_id,
1639                           index, q->n_bd, q->write_ptr, q->read_ptr);
1640                 return 0;
1641         }
1642
1643         for (index = iwl_queue_inc_wrap(index, q->n_bd);
1644                 q->read_ptr != index;
1645                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1646                 if (txq_id != IWL_CMD_QUEUE_NUM) {
1647                         iwl4965_txstatus_to_ieee(priv,
1648                                         &(txq->txb[txq->q.read_ptr]));
1649                         iwl_hw_txq_free_tfd(priv, txq);
1650                 } else if (nfreed > 1) {
1651                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1652                                         q->write_ptr, q->read_ptr);
1653                         queue_work(priv->workqueue, &priv->restart);
1654                 }
1655                 nfreed++;
1656         }
1657
1658         return nfreed;
1659 }
1660
1661 static int iwl4965_is_tx_success(u32 status)
1662 {
1663         status &= TX_STATUS_MSK;
1664         return (status == TX_STATUS_SUCCESS)
1665             || (status == TX_STATUS_DIRECT_DONE);
1666 }
1667
1668 /******************************************************************************
1669  *
1670  * Generic RX handler implementations
1671  *
1672  ******************************************************************************/
1673 #ifdef CONFIG_IWL4965_HT
1674
1675 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1676                                     struct ieee80211_hdr *hdr)
1677 {
1678         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1679                 return IWL_AP_ID;
1680         else {
1681                 u8 *da = ieee80211_get_DA(hdr);
1682                 return iwl_find_station(priv, da);
1683         }
1684 }
1685
1686 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1687         struct iwl_priv *priv, int txq_id, int idx)
1688 {
1689         if (priv->txq[txq_id].txb[idx].skb[0])
1690                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1691                                 txb[idx].skb[0]->data;
1692         return NULL;
1693 }
1694
1695 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1696 {
1697         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1698                                 tx_resp->frame_count);
1699         return le32_to_cpu(*scd_ssn) & MAX_SN;
1700
1701 }
1702
1703 /**
1704  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1705  */
1706 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1707                                       struct iwl_ht_agg *agg,
1708                                       struct iwl4965_tx_resp_agg *tx_resp,
1709                                       u16 start_idx)
1710 {
1711         u16 status;
1712         struct agg_tx_status *frame_status = &tx_resp->status;
1713         struct ieee80211_tx_status *tx_status = NULL;
1714         struct ieee80211_hdr *hdr = NULL;
1715         int i, sh;
1716         int txq_id, idx;
1717         u16 seq;
1718
1719         if (agg->wait_for_ba)
1720                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1721
1722         agg->frame_count = tx_resp->frame_count;
1723         agg->start_idx = start_idx;
1724         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1725         agg->bitmap = 0;
1726
1727         /* # frames attempted by Tx command */
1728         if (agg->frame_count == 1) {
1729                 /* Only one frame was attempted; no block-ack will arrive */
1730                 status = le16_to_cpu(frame_status[0].status);
1731                 seq  = le16_to_cpu(frame_status[0].sequence);
1732                 idx = SEQ_TO_INDEX(seq);
1733                 txq_id = SEQ_TO_QUEUE(seq);
1734
1735                 /* FIXME: code repetition */
1736                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1737                                    agg->frame_count, agg->start_idx, idx);
1738
1739                 tx_status = &(priv->txq[txq_id].txb[idx].status);
1740                 tx_status->retry_count = tx_resp->failure_frame;
1741                 tx_status->control.flags &= ~IEEE80211_TXCTL_AMPDU;
1742                 tx_status->flags = iwl4965_is_tx_success(status)?
1743                         IEEE80211_TX_STATUS_ACK : 0;
1744                 iwl4965_hwrate_to_tx_control(priv,
1745                                              le32_to_cpu(tx_resp->rate_n_flags),
1746                                              &tx_status->control);
1747                 /* FIXME: code repetition end */
1748
1749                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1750                                     status & 0xff, tx_resp->failure_frame);
1751                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1752                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1753
1754                 agg->wait_for_ba = 0;
1755         } else {
1756                 /* Two or more frames were attempted; expect block-ack */
1757                 u64 bitmap = 0;
1758                 int start = agg->start_idx;
1759
1760                 /* Construct bit-map of pending frames within Tx window */
1761                 for (i = 0; i < agg->frame_count; i++) {
1762                         u16 sc;
1763                         status = le16_to_cpu(frame_status[i].status);
1764                         seq  = le16_to_cpu(frame_status[i].sequence);
1765                         idx = SEQ_TO_INDEX(seq);
1766                         txq_id = SEQ_TO_QUEUE(seq);
1767
1768                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1769                                       AGG_TX_STATE_ABORT_MSK))
1770                                 continue;
1771
1772                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1773                                            agg->frame_count, txq_id, idx);
1774
1775                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1776
1777                         sc = le16_to_cpu(hdr->seq_ctrl);
1778                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1779                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
1780                                           " idx=%d, seq_idx=%d, seq=%d\n",
1781                                           idx, SEQ_TO_SN(sc),
1782                                           hdr->seq_ctrl);
1783                                 return -1;
1784                         }
1785
1786                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1787                                            i, idx, SEQ_TO_SN(sc));
1788
1789                         sh = idx - start;
1790                         if (sh > 64) {
1791                                 sh = (start - idx) + 0xff;
1792                                 bitmap = bitmap << sh;
1793                                 sh = 0;
1794                                 start = idx;
1795                         } else if (sh < -64)
1796                                 sh  = 0xff - (start - idx);
1797                         else if (sh < 0) {
1798                                 sh = start - idx;
1799                                 start = idx;
1800                                 bitmap = bitmap << sh;
1801                                 sh = 0;
1802                         }
1803                         bitmap |= (1 << sh);
1804                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1805                                            start, (u32)(bitmap & 0xFFFFFFFF));
1806                 }
1807
1808                 agg->bitmap = bitmap;
1809                 agg->start_idx = start;
1810                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1811                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1812                                    agg->frame_count, agg->start_idx,
1813                                    (unsigned long long)agg->bitmap);
1814
1815                 if (bitmap)
1816                         agg->wait_for_ba = 1;
1817         }
1818         return 0;
1819 }
1820 #endif
1821
1822 /**
1823  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1824  */
1825 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1826                                 struct iwl_rx_mem_buffer *rxb)
1827 {
1828         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1829         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1830         int txq_id = SEQ_TO_QUEUE(sequence);
1831         int index = SEQ_TO_INDEX(sequence);
1832         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1833         struct ieee80211_tx_status *tx_status;
1834         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1835         u32  status = le32_to_cpu(tx_resp->status);
1836 #ifdef CONFIG_IWL4965_HT
1837         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1838         u16 fc;
1839         struct ieee80211_hdr *hdr;
1840         u8 *qc = NULL;
1841 #endif
1842
1843         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1844                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1845                           "is out of range [0-%d] %d %d\n", txq_id,
1846                           index, txq->q.n_bd, txq->q.write_ptr,
1847                           txq->q.read_ptr);
1848                 return;
1849         }
1850
1851 #ifdef CONFIG_IWL4965_HT
1852         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1853         fc = le16_to_cpu(hdr->frame_control);
1854         if (ieee80211_is_qos_data(fc)) {
1855                 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1856                 tid = qc[0] & 0xf;
1857         }
1858
1859         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1860         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1861                 IWL_ERROR("Station not known\n");
1862                 return;
1863         }
1864
1865         if (txq->sched_retry) {
1866                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1867                 struct iwl_ht_agg *agg = NULL;
1868
1869                 if (!qc)
1870                         return;
1871
1872                 agg = &priv->stations[sta_id].tid[tid].agg;
1873
1874                 iwl4965_tx_status_reply_tx(priv, agg,
1875                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1876
1877                 if ((tx_resp->frame_count == 1) &&
1878                     !iwl4965_is_tx_success(status)) {
1879                         /* TODO: send BAR */
1880                 }
1881
1882                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1883                         int freed, ampdu_q;
1884                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1885                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1886                                            "%d index %d\n", scd_ssn , index);
1887                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1888                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1889
1890                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1891                             txq_id >= 0 && priv->mac80211_registered &&
1892                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1893                                 /* calculate mac80211 ampdu sw queue to wake */
1894                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1895                                           priv->hw->queues;
1896                                 if (agg->state == IWL_AGG_OFF)
1897                                         ieee80211_wake_queue(priv->hw, txq_id);
1898                                 else
1899                                         ieee80211_wake_queue(priv->hw, ampdu_q);
1900                         }
1901                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1902                 }
1903         } else {
1904 #endif /* CONFIG_IWL4965_HT */
1905         tx_status = &(txq->txb[txq->q.read_ptr].status);
1906
1907         tx_status->retry_count = tx_resp->failure_frame;
1908         tx_status->flags =
1909             iwl4965_is_tx_success(status) ? IEEE80211_TX_STATUS_ACK : 0;
1910         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1911                                      &tx_status->control);
1912
1913         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1914                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1915                      status, le32_to_cpu(tx_resp->rate_n_flags),
1916                      tx_resp->failure_frame);
1917
1918         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1919 #ifdef CONFIG_IWL4965_HT
1920         if (index != -1) {
1921                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1922                 if (tid != MAX_TID_COUNT)
1923                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1924                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1925                         (txq_id >= 0) && priv->mac80211_registered)
1926                         ieee80211_wake_queue(priv->hw, txq_id);
1927                 if (tid != MAX_TID_COUNT)
1928                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1929         }
1930         }
1931 #endif /* CONFIG_IWL4965_HT */
1932
1933         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1934                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
1935 }
1936
1937
1938 static void iwl4965_rx_reply_alive(struct iwl_priv *priv,
1939                                    struct iwl_rx_mem_buffer *rxb)
1940 {
1941         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1942         struct iwl4965_alive_resp *palive;
1943         struct delayed_work *pwork;
1944
1945         palive = &pkt->u.alive_frame;
1946
1947         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1948                        "0x%01X 0x%01X\n",
1949                        palive->is_valid, palive->ver_type,
1950                        palive->ver_subtype);
1951
1952         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1953                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1954                 memcpy(&priv->card_alive_init,
1955                        &pkt->u.alive_frame,
1956                        sizeof(struct iwl4965_init_alive_resp));
1957                 pwork = &priv->init_alive_start;
1958         } else {
1959                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1960                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1961                        sizeof(struct iwl4965_alive_resp));
1962                 pwork = &priv->alive_start;
1963         }
1964
1965         /* We delay the ALIVE response by 5ms to
1966          * give the HW RF Kill time to activate... */
1967         if (palive->is_valid == UCODE_VALID_OK)
1968                 queue_delayed_work(priv->workqueue, pwork,
1969                                    msecs_to_jiffies(5));
1970         else
1971                 IWL_WARNING("uCode did not respond OK.\n");
1972 }
1973
1974 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
1975                                      struct iwl_rx_mem_buffer *rxb)
1976 {
1977         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1978
1979         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1980         return;
1981 }
1982
1983 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1984                                    struct iwl_rx_mem_buffer *rxb)
1985 {
1986         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1987
1988         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1989                 "seq 0x%04X ser 0x%08X\n",
1990                 le32_to_cpu(pkt->u.err_resp.error_type),
1991                 get_cmd_string(pkt->u.err_resp.cmd_id),
1992                 pkt->u.err_resp.cmd_id,
1993                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1994                 le32_to_cpu(pkt->u.err_resp.error_info));
1995 }
1996
1997 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1998
1999 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
2000 {
2001         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2002         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
2003         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
2004         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
2005                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
2006         rxon->channel = csa->channel;
2007         priv->staging_rxon.channel = csa->channel;
2008 }
2009
2010 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2011                                           struct iwl_rx_mem_buffer *rxb)
2012 {
2013 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2014         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2015         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2016
2017         if (!report->state) {
2018                 IWL_DEBUG(IWL_DL_11H,
2019                         "Spectrum Measure Notification: Start\n");
2020                 return;
2021         }
2022
2023         memcpy(&priv->measure_report, report, sizeof(*report));
2024         priv->measurement_status |= MEASUREMENT_READY;
2025 #endif
2026 }
2027
2028 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2029                                       struct iwl_rx_mem_buffer *rxb)
2030 {
2031 #ifdef CONFIG_IWLWIFI_DEBUG
2032         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2033         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2034         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2035                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2036 #endif
2037 }
2038
2039 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2040                                              struct iwl_rx_mem_buffer *rxb)
2041 {
2042         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2043         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2044                         "notification for %s:\n",
2045                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2046         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2047 }
2048
2049 static void iwl4965_bg_beacon_update(struct work_struct *work)
2050 {
2051         struct iwl_priv *priv =
2052                 container_of(work, struct iwl_priv, beacon_update);
2053         struct sk_buff *beacon;
2054
2055         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2056         beacon = ieee80211_beacon_get(priv->hw, priv->vif, NULL);
2057
2058         if (!beacon) {
2059                 IWL_ERROR("update beacon failed\n");
2060                 return;
2061         }
2062
2063         mutex_lock(&priv->mutex);
2064         /* new beacon skb is allocated every time; dispose previous.*/
2065         if (priv->ibss_beacon)
2066                 dev_kfree_skb(priv->ibss_beacon);
2067
2068         priv->ibss_beacon = beacon;
2069         mutex_unlock(&priv->mutex);
2070
2071         iwl4965_send_beacon_cmd(priv);
2072 }
2073
2074 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2075                                 struct iwl_rx_mem_buffer *rxb)
2076 {
2077 #ifdef CONFIG_IWLWIFI_DEBUG
2078         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2079         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2080         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2081
2082         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2083                 "tsf %d %d rate %d\n",
2084                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2085                 beacon->beacon_notify_hdr.failure_frame,
2086                 le32_to_cpu(beacon->ibss_mgr_status),
2087                 le32_to_cpu(beacon->high_tsf),
2088                 le32_to_cpu(beacon->low_tsf), rate);
2089 #endif
2090
2091         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2092             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2093                 queue_work(priv->workqueue, &priv->beacon_update);
2094 }
2095
2096 /* Service response to REPLY_SCAN_CMD (0x80) */
2097 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2098                               struct iwl_rx_mem_buffer *rxb)
2099 {
2100 #ifdef CONFIG_IWLWIFI_DEBUG
2101         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2102         struct iwl4965_scanreq_notification *notif =
2103             (struct iwl4965_scanreq_notification *)pkt->u.raw;
2104
2105         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2106 #endif
2107 }
2108
2109 /* Service SCAN_START_NOTIFICATION (0x82) */
2110 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2111                                     struct iwl_rx_mem_buffer *rxb)
2112 {
2113         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2114         struct iwl4965_scanstart_notification *notif =
2115             (struct iwl4965_scanstart_notification *)pkt->u.raw;
2116         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2117         IWL_DEBUG_SCAN("Scan start: "
2118                        "%d [802.11%s] "
2119                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2120                        notif->channel,
2121                        notif->band ? "bg" : "a",
2122                        notif->tsf_high,
2123                        notif->tsf_low, notif->status, notif->beacon_timer);
2124 }
2125
2126 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2127 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2128                                       struct iwl_rx_mem_buffer *rxb)
2129 {
2130         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2131         struct iwl4965_scanresults_notification *notif =
2132             (struct iwl4965_scanresults_notification *)pkt->u.raw;
2133
2134         IWL_DEBUG_SCAN("Scan ch.res: "
2135                        "%d [802.11%s] "
2136                        "(TSF: 0x%08X:%08X) - %d "
2137                        "elapsed=%lu usec (%dms since last)\n",
2138                        notif->channel,
2139                        notif->band ? "bg" : "a",
2140                        le32_to_cpu(notif->tsf_high),
2141                        le32_to_cpu(notif->tsf_low),
2142                        le32_to_cpu(notif->statistics[0]),
2143                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2144                        jiffies_to_msecs(elapsed_jiffies
2145                                         (priv->last_scan_jiffies, jiffies)));
2146
2147         priv->last_scan_jiffies = jiffies;
2148         priv->next_scan_jiffies = 0;
2149 }
2150
2151 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2152 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2153                                        struct iwl_rx_mem_buffer *rxb)
2154 {
2155         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2156         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2157
2158         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2159                        scan_notif->scanned_channels,
2160                        scan_notif->tsf_low,
2161                        scan_notif->tsf_high, scan_notif->status);
2162
2163         /* The HW is no longer scanning */
2164         clear_bit(STATUS_SCAN_HW, &priv->status);
2165
2166         /* The scan completion notification came in, so kill that timer... */
2167         cancel_delayed_work(&priv->scan_check);
2168
2169         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2170                        (priv->scan_bands == 2) ? "2.4" : "5.2",
2171                        jiffies_to_msecs(elapsed_jiffies
2172                                         (priv->scan_pass_start, jiffies)));
2173
2174         /* Remove this scanned band from the list
2175          * of pending bands to scan */
2176         priv->scan_bands--;
2177
2178         /* If a request to abort was given, or the scan did not succeed
2179          * then we reset the scan state machine and terminate,
2180          * re-queuing another scan if one has been requested */
2181         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2182                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2183                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2184         } else {
2185                 /* If there are more bands on this scan pass reschedule */
2186                 if (priv->scan_bands > 0)
2187                         goto reschedule;
2188         }
2189
2190         priv->last_scan_jiffies = jiffies;
2191         priv->next_scan_jiffies = 0;
2192         IWL_DEBUG_INFO("Setting scan to off\n");
2193
2194         clear_bit(STATUS_SCANNING, &priv->status);
2195
2196         IWL_DEBUG_INFO("Scan took %dms\n",
2197                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2198
2199         queue_work(priv->workqueue, &priv->scan_completed);
2200
2201         return;
2202
2203 reschedule:
2204         priv->scan_pass_start = jiffies;
2205         queue_work(priv->workqueue, &priv->request_scan);
2206 }
2207
2208 /* Handle notification from uCode that card's power state is changing
2209  * due to software, hardware, or critical temperature RFKILL */
2210 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2211                                     struct iwl_rx_mem_buffer *rxb)
2212 {
2213         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2214         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2215         unsigned long status = priv->status;
2216
2217         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2218                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2219                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2220
2221         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2222                      RF_CARD_DISABLED)) {
2223
2224                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2225                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2226
2227                 if (!iwl_grab_nic_access(priv)) {
2228                         iwl_write_direct32(
2229                                 priv, HBUS_TARG_MBX_C,
2230                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2231
2232                         iwl_release_nic_access(priv);
2233                 }
2234
2235                 if (!(flags & RXON_CARD_DISABLED)) {
2236                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2237                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2238                         if (!iwl_grab_nic_access(priv)) {
2239                                 iwl_write_direct32(
2240                                         priv, HBUS_TARG_MBX_C,
2241                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2242
2243                                 iwl_release_nic_access(priv);
2244                         }
2245                 }
2246
2247                 if (flags & RF_CARD_DISABLED) {
2248                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2249                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2250                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2251                         if (!iwl_grab_nic_access(priv))
2252                                 iwl_release_nic_access(priv);
2253                 }
2254         }
2255
2256         if (flags & HW_CARD_DISABLED)
2257                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2258         else
2259                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2260
2261
2262         if (flags & SW_CARD_DISABLED)
2263                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2264         else
2265                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2266
2267         if (!(flags & RXON_CARD_DISABLED))
2268                 iwl4965_scan_cancel(priv);
2269
2270         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2271              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2272             (test_bit(STATUS_RF_KILL_SW, &status) !=
2273              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2274                 queue_work(priv->workqueue, &priv->rf_kill);
2275         else
2276                 wake_up_interruptible(&priv->wait_command_queue);
2277 }
2278
2279 /**
2280  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2281  *
2282  * Setup the RX handlers for each of the reply types sent from the uCode
2283  * to the host.
2284  *
2285  * This function chains into the hardware specific files for them to setup
2286  * any hardware specific handlers as well.
2287  */
2288 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2289 {
2290         priv->rx_handlers[REPLY_ALIVE] = iwl4965_rx_reply_alive;
2291         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2292         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2293         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2294         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2295             iwl4965_rx_spectrum_measure_notif;
2296         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2297         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2298             iwl4965_rx_pm_debug_statistics_notif;
2299         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2300
2301         /*
2302          * The same handler is used for both the REPLY to a discrete
2303          * statistics request from the host as well as for the periodic
2304          * statistics notifications (after received beacons) from the uCode.
2305          */
2306         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2307         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2308
2309         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2310         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2311         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2312             iwl4965_rx_scan_results_notif;
2313         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2314             iwl4965_rx_scan_complete_notif;
2315         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2316         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2317
2318         /* Set up hardware specific Rx handlers */
2319         priv->cfg->ops->lib->rx_handler_setup(priv);
2320 }
2321
2322 /**
2323  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2324  * @rxb: Rx buffer to reclaim
2325  *
2326  * If an Rx buffer has an async callback associated with it the callback
2327  * will be executed.  The attached skb (if present) will only be freed
2328  * if the callback returns 1
2329  */
2330 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2331                                     struct iwl_rx_mem_buffer *rxb)
2332 {
2333         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2334         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2335         int txq_id = SEQ_TO_QUEUE(sequence);
2336         int index = SEQ_TO_INDEX(sequence);
2337         int huge = sequence & SEQ_HUGE_FRAME;
2338         int cmd_index;
2339         struct iwl_cmd *cmd;
2340
2341         /* If a Tx command is being handled and it isn't in the actual
2342          * command queue then there a command routing bug has been introduced
2343          * in the queue management code. */
2344         if (txq_id != IWL_CMD_QUEUE_NUM)
2345                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2346                           txq_id, pkt->hdr.cmd);
2347         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2348
2349         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2350         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2351
2352         /* Input error checking is done when commands are added to queue. */
2353         if (cmd->meta.flags & CMD_WANT_SKB) {
2354                 cmd->meta.source->u.skb = rxb->skb;
2355                 rxb->skb = NULL;
2356         } else if (cmd->meta.u.callback &&
2357                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2358                 rxb->skb = NULL;
2359
2360         iwl4965_tx_queue_reclaim(priv, txq_id, index);
2361
2362         if (!(cmd->meta.flags & CMD_ASYNC)) {
2363                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2364                 wake_up_interruptible(&priv->wait_command_queue);
2365         }
2366 }
2367
2368 /*
2369  * this should be called while priv->lock is locked
2370 */
2371 static void __iwl_rx_replenish(struct iwl_priv *priv)
2372 {
2373         iwl_rx_allocate(priv);
2374         iwl_rx_queue_restock(priv);
2375 }
2376
2377
2378 /**
2379  * iwl_rx_handle - Main entry function for receiving responses from uCode
2380  *
2381  * Uses the priv->rx_handlers callback function array to invoke
2382  * the appropriate handlers, including command responses,
2383  * frame-received notifications, and other notifications.
2384  */
2385 void iwl_rx_handle(struct iwl_priv *priv)
2386 {
2387         struct iwl_rx_mem_buffer *rxb;
2388         struct iwl_rx_packet *pkt;
2389         struct iwl_rx_queue *rxq = &priv->rxq;
2390         u32 r, i;
2391         int reclaim;
2392         unsigned long flags;
2393         u8 fill_rx = 0;
2394         u32 count = 8;
2395
2396         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2397          * buffer that the driver may process (last buffer filled by ucode). */
2398         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2399         i = rxq->read;
2400
2401         /* Rx interrupt, but nothing sent from uCode */
2402         if (i == r)
2403                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2404
2405         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2406                 fill_rx = 1;
2407
2408         while (i != r) {
2409                 rxb = rxq->queue[i];
2410
2411                 /* If an RXB doesn't have a Rx queue slot associated with it,
2412                  * then a bug has been introduced in the queue refilling
2413                  * routines -- catch it here */
2414                 BUG_ON(rxb == NULL);
2415
2416                 rxq->queue[i] = NULL;
2417
2418                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2419                                             priv->hw_params.rx_buf_size,
2420                                             PCI_DMA_FROMDEVICE);
2421                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2422
2423                 /* Reclaim a command buffer only if this packet is a response
2424                  *   to a (driver-originated) command.
2425                  * If the packet (e.g. Rx frame) originated from uCode,
2426                  *   there is no command buffer to reclaim.
2427                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2428                  *   but apparently a few don't get set; catch them here. */
2429                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2430                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2431                         (pkt->hdr.cmd != REPLY_RX) &&
2432                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2433                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2434                         (pkt->hdr.cmd != REPLY_TX);
2435
2436                 /* Based on type of command response or notification,
2437                  *   handle those that need handling via function in
2438                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2439                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2440                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2441                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2442                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2443                 } else {
2444                         /* No handling needed */
2445                         IWL_DEBUG(IWL_DL_RX,
2446                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2447                                 r, i, get_cmd_string(pkt->hdr.cmd),
2448                                 pkt->hdr.cmd);
2449                 }
2450
2451                 if (reclaim) {
2452                         /* Invoke any callbacks, transfer the skb to caller, and
2453                          * fire off the (possibly) blocking iwl_send_cmd()
2454                          * as we reclaim the driver command queue */
2455                         if (rxb && rxb->skb)
2456                                 iwl4965_tx_cmd_complete(priv, rxb);
2457                         else
2458                                 IWL_WARNING("Claim null rxb?\n");
2459                 }
2460
2461                 /* For now we just don't re-use anything.  We can tweak this
2462                  * later to try and re-use notification packets and SKBs that
2463                  * fail to Rx correctly */
2464                 if (rxb->skb != NULL) {
2465                         priv->alloc_rxb_skb--;
2466                         dev_kfree_skb_any(rxb->skb);
2467                         rxb->skb = NULL;
2468                 }
2469
2470                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2471                                  priv->hw_params.rx_buf_size,
2472                                  PCI_DMA_FROMDEVICE);
2473                 spin_lock_irqsave(&rxq->lock, flags);
2474                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2475                 spin_unlock_irqrestore(&rxq->lock, flags);
2476                 i = (i + 1) & RX_QUEUE_MASK;
2477                 /* If there are a lot of unused frames,
2478                  * restock the Rx queue so ucode wont assert. */
2479                 if (fill_rx) {
2480                         count++;
2481                         if (count >= 8) {
2482                                 priv->rxq.read = i;
2483                                 __iwl_rx_replenish(priv);
2484                                 count = 0;
2485                         }
2486                 }
2487         }
2488
2489         /* Backtrack one entry */
2490         priv->rxq.read = i;
2491         iwl_rx_queue_restock(priv);
2492 }
2493 /* Convert linear signal-to-noise ratio into dB */
2494 static u8 ratio2dB[100] = {
2495 /*       0   1   2   3   4   5   6   7   8   9 */
2496          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2497         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2498         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2499         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2500         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2501         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2502         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2503         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2504         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2505         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2506 };
2507
2508 /* Calculates a relative dB value from a ratio of linear
2509  *   (i.e. not dB) signal levels.
2510  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2511 int iwl4965_calc_db_from_ratio(int sig_ratio)
2512 {
2513         /* 1000:1 or higher just report as 60 dB */
2514         if (sig_ratio >= 1000)
2515                 return 60;
2516
2517         /* 100:1 or higher, divide by 10 and use table,
2518          *   add 20 dB to make up for divide by 10 */
2519         if (sig_ratio >= 100)
2520                 return (20 + (int)ratio2dB[sig_ratio/10]);
2521
2522         /* We shouldn't see this */
2523         if (sig_ratio < 1)
2524                 return 0;
2525
2526         /* Use table for ratios 1:1 - 99:1 */
2527         return (int)ratio2dB[sig_ratio];
2528 }
2529
2530 #define PERFECT_RSSI (-20) /* dBm */
2531 #define WORST_RSSI (-95)   /* dBm */
2532 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2533
2534 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2535  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2536  *   about formulas used below. */
2537 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2538 {
2539         int sig_qual;
2540         int degradation = PERFECT_RSSI - rssi_dbm;
2541
2542         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2543          * as indicator; formula is (signal dbm - noise dbm).
2544          * SNR at or above 40 is a great signal (100%).
2545          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2546          * Weakest usable signal is usually 10 - 15 dB SNR. */
2547         if (noise_dbm) {
2548                 if (rssi_dbm - noise_dbm >= 40)
2549                         return 100;
2550                 else if (rssi_dbm < noise_dbm)
2551                         return 0;
2552                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2553
2554         /* Else use just the signal level.
2555          * This formula is a least squares fit of data points collected and
2556          *   compared with a reference system that had a percentage (%) display
2557          *   for signal quality. */
2558         } else
2559                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2560                             (15 * RSSI_RANGE + 62 * degradation)) /
2561                            (RSSI_RANGE * RSSI_RANGE);
2562
2563         if (sig_qual > 100)
2564                 sig_qual = 100;
2565         else if (sig_qual < 1)
2566                 sig_qual = 0;
2567
2568         return sig_qual;
2569 }
2570
2571 #ifdef CONFIG_IWLWIFI_DEBUG
2572 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2573 {
2574         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2575         DECLARE_MAC_BUF(mac);
2576
2577         IWL_DEBUG_RADIO("RX CONFIG:\n");
2578         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2579         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2580         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2581         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2582                         le32_to_cpu(rxon->filter_flags));
2583         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2584         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2585                         rxon->ofdm_basic_rates);
2586         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2587         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2588                         print_mac(mac, rxon->node_addr));
2589         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2590                         print_mac(mac, rxon->bssid_addr));
2591         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2592 }
2593 #endif
2594
2595 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2596 {
2597         IWL_DEBUG_ISR("Enabling interrupts\n");
2598         set_bit(STATUS_INT_ENABLED, &priv->status);
2599         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2600 }
2601
2602 /* call this function to flush any scheduled tasklet */
2603 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2604 {
2605         /* wait to make sure we flush pedding tasklet*/
2606         synchronize_irq(priv->pci_dev->irq);
2607         tasklet_kill(&priv->irq_tasklet);
2608 }
2609
2610 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2611 {
2612         clear_bit(STATUS_INT_ENABLED, &priv->status);
2613
2614         /* disable interrupts from uCode/NIC to host */
2615         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2616
2617         /* acknowledge/clear/reset any interrupts still pending
2618          * from uCode or flow handler (Rx/Tx DMA) */
2619         iwl_write32(priv, CSR_INT, 0xffffffff);
2620         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2621         IWL_DEBUG_ISR("Disabled interrupts\n");
2622 }
2623
2624 static const char *desc_lookup(int i)
2625 {
2626         switch (i) {
2627         case 1:
2628                 return "FAIL";
2629         case 2:
2630                 return "BAD_PARAM";
2631         case 3:
2632                 return "BAD_CHECKSUM";
2633         case 4:
2634                 return "NMI_INTERRUPT";
2635         case 5:
2636                 return "SYSASSERT";
2637         case 6:
2638                 return "FATAL_ERROR";
2639         }
2640
2641         return "UNKNOWN";
2642 }
2643
2644 #define ERROR_START_OFFSET  (1 * sizeof(u32))
2645 #define ERROR_ELEM_SIZE     (7 * sizeof(u32))
2646
2647 static void iwl4965_dump_nic_error_log(struct iwl_priv *priv)
2648 {
2649         u32 data2, line;
2650         u32 desc, time, count, base, data1;
2651         u32 blink1, blink2, ilink1, ilink2;
2652         int rc;
2653
2654         base = le32_to_cpu(priv->card_alive.error_event_table_ptr);
2655
2656         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2657                 IWL_ERROR("Not valid error log pointer 0x%08X\n", base);
2658                 return;
2659         }
2660
2661         rc = iwl_grab_nic_access(priv);
2662         if (rc) {
2663                 IWL_WARNING("Can not read from adapter at this time.\n");
2664                 return;
2665         }
2666
2667         count = iwl_read_targ_mem(priv, base);
2668
2669         if (ERROR_START_OFFSET <= count * ERROR_ELEM_SIZE) {
2670                 IWL_ERROR("Start IWL Error Log Dump:\n");
2671                 IWL_ERROR("Status: 0x%08lX, count: %d\n", priv->status, count);
2672         }
2673
2674         desc = iwl_read_targ_mem(priv, base + 1 * sizeof(u32));
2675         blink1 = iwl_read_targ_mem(priv, base + 3 * sizeof(u32));
2676         blink2 = iwl_read_targ_mem(priv, base + 4 * sizeof(u32));
2677         ilink1 = iwl_read_targ_mem(priv, base + 5 * sizeof(u32));
2678         ilink2 = iwl_read_targ_mem(priv, base + 6 * sizeof(u32));
2679         data1 = iwl_read_targ_mem(priv, base + 7 * sizeof(u32));
2680         data2 = iwl_read_targ_mem(priv, base + 8 * sizeof(u32));
2681         line = iwl_read_targ_mem(priv, base + 9 * sizeof(u32));
2682         time = iwl_read_targ_mem(priv, base + 11 * sizeof(u32));
2683
2684         IWL_ERROR("Desc               Time       "
2685                   "data1      data2      line\n");
2686         IWL_ERROR("%-13s (#%d) %010u 0x%08X 0x%08X %u\n",
2687                   desc_lookup(desc), desc, time, data1, data2, line);
2688         IWL_ERROR("blink1  blink2  ilink1  ilink2\n");
2689         IWL_ERROR("0x%05X 0x%05X 0x%05X 0x%05X\n", blink1, blink2,
2690                   ilink1, ilink2);
2691
2692         iwl_release_nic_access(priv);
2693 }
2694
2695 #define EVENT_START_OFFSET  (4 * sizeof(u32))
2696
2697 /**
2698  * iwl4965_print_event_log - Dump error event log to syslog
2699  *
2700  * NOTE: Must be called with iwl_grab_nic_access() already obtained!
2701  */
2702 static void iwl4965_print_event_log(struct iwl_priv *priv, u32 start_idx,
2703                                 u32 num_events, u32 mode)
2704 {
2705         u32 i;
2706         u32 base;       /* SRAM byte address of event log header */
2707         u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
2708         u32 ptr;        /* SRAM byte address of log data */
2709         u32 ev, time, data; /* event log data */
2710
2711         if (num_events == 0)
2712                 return;
2713
2714         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2715
2716         if (mode == 0)
2717                 event_size = 2 * sizeof(u32);
2718         else
2719                 event_size = 3 * sizeof(u32);
2720
2721         ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
2722
2723         /* "time" is actually "data" for mode 0 (no timestamp).
2724          * place event id # at far right for easier visual parsing. */
2725         for (i = 0; i < num_events; i++) {
2726                 ev = iwl_read_targ_mem(priv, ptr);
2727                 ptr += sizeof(u32);
2728                 time = iwl_read_targ_mem(priv, ptr);
2729                 ptr += sizeof(u32);
2730                 if (mode == 0)
2731                         IWL_ERROR("0x%08x\t%04u\n", time, ev); /* data, ev */
2732                 else {
2733                         data = iwl_read_targ_mem(priv, ptr);
2734                         ptr += sizeof(u32);
2735                         IWL_ERROR("%010u\t0x%08x\t%04u\n", time, data, ev);
2736                 }
2737         }
2738 }
2739
2740 static void iwl4965_dump_nic_event_log(struct iwl_priv *priv)
2741 {
2742         int rc;
2743         u32 base;       /* SRAM byte address of event log header */
2744         u32 capacity;   /* event log capacity in # entries */
2745         u32 mode;       /* 0 - no timestamp, 1 - timestamp recorded */
2746         u32 num_wraps;  /* # times uCode wrapped to top of log */
2747         u32 next_entry; /* index of next entry to be written by uCode */
2748         u32 size;       /* # entries that we'll print */
2749
2750         base = le32_to_cpu(priv->card_alive.log_event_table_ptr);
2751         if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
2752                 IWL_ERROR("Invalid event log pointer 0x%08X\n", base);
2753                 return;
2754         }
2755
2756         rc = iwl_grab_nic_access(priv);
2757         if (rc) {
2758                 IWL_WARNING("Can not read from adapter at this time.\n");
2759                 return;
2760         }
2761
2762         /* event log header */
2763         capacity = iwl_read_targ_mem(priv, base);
2764         mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
2765         num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
2766         next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
2767
2768         size = num_wraps ? capacity : next_entry;
2769
2770         /* bail out if nothing in log */
2771         if (size == 0) {
2772                 IWL_ERROR("Start IWL Event Log Dump: nothing in log\n");
2773                 iwl_release_nic_access(priv);
2774                 return;
2775         }
2776
2777         IWL_ERROR("Start IWL Event Log Dump: display count %d, wraps %d\n",
2778                   size, num_wraps);
2779
2780         /* if uCode has wrapped back to top of log, start at the oldest entry,
2781          * i.e the next one that uCode would fill. */
2782         if (num_wraps)
2783                 iwl4965_print_event_log(priv, next_entry,
2784                                     capacity - next_entry, mode);
2785
2786         /* (then/else) start at top of log */
2787         iwl4965_print_event_log(priv, 0, next_entry, mode);
2788
2789         iwl_release_nic_access(priv);
2790 }
2791
2792 /**
2793  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2794  */
2795 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2796 {
2797         /* Set the FW error flag -- cleared on iwl4965_down */
2798         set_bit(STATUS_FW_ERROR, &priv->status);
2799
2800         /* Cancel currently queued command. */
2801         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2802
2803 #ifdef CONFIG_IWLWIFI_DEBUG
2804         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2805                 iwl4965_dump_nic_error_log(priv);
2806                 iwl4965_dump_nic_event_log(priv);
2807                 iwl4965_print_rx_config_cmd(priv);
2808         }
2809 #endif
2810
2811         wake_up_interruptible(&priv->wait_command_queue);
2812
2813         /* Keep the restart process from trying to send host
2814          * commands by clearing the INIT status bit */
2815         clear_bit(STATUS_READY, &priv->status);
2816
2817         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2818                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2819                           "Restarting adapter due to uCode error.\n");
2820
2821                 if (iwl_is_associated(priv)) {
2822                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2823                                sizeof(priv->recovery_rxon));
2824                         priv->error_recovering = 1;
2825                 }
2826                 if (priv->cfg->mod_params->restart_fw)
2827                         queue_work(priv->workqueue, &priv->restart);
2828         }
2829 }
2830
2831 static void iwl4965_error_recovery(struct iwl_priv *priv)
2832 {
2833         unsigned long flags;
2834
2835         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2836                sizeof(priv->staging_rxon));
2837         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2838         iwl4965_commit_rxon(priv);
2839
2840         iwl_rxon_add_station(priv, priv->bssid, 1);
2841
2842         spin_lock_irqsave(&priv->lock, flags);
2843         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2844         priv->error_recovering = 0;
2845         spin_unlock_irqrestore(&priv->lock, flags);
2846 }
2847
2848 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2849 {
2850         u32 inta, handled = 0;
2851         u32 inta_fh;
2852         unsigned long flags;
2853 #ifdef CONFIG_IWLWIFI_DEBUG
2854         u32 inta_mask;
2855 #endif
2856
2857         spin_lock_irqsave(&priv->lock, flags);
2858
2859         /* Ack/clear/reset pending uCode interrupts.
2860          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2861          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2862         inta = iwl_read32(priv, CSR_INT);
2863         iwl_write32(priv, CSR_INT, inta);
2864
2865         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2866          * Any new interrupts that happen after this, either while we're
2867          * in this tasklet, or later, will show up in next ISR/tasklet. */
2868         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2869         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2870
2871 #ifdef CONFIG_IWLWIFI_DEBUG
2872         if (priv->debug_level & IWL_DL_ISR) {
2873                 /* just for debug */
2874                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2875                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2876                               inta, inta_mask, inta_fh);
2877         }
2878 #endif
2879
2880         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2881          * atomic, make sure that inta covers all the interrupts that
2882          * we've discovered, even if FH interrupt came in just after
2883          * reading CSR_INT. */
2884         if (inta_fh & CSR49_FH_INT_RX_MASK)
2885                 inta |= CSR_INT_BIT_FH_RX;
2886         if (inta_fh & CSR49_FH_INT_TX_MASK)
2887                 inta |= CSR_INT_BIT_FH_TX;
2888
2889         /* Now service all interrupt bits discovered above. */
2890         if (inta & CSR_INT_BIT_HW_ERR) {
2891                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2892
2893                 /* Tell the device to stop sending interrupts */
2894                 iwl4965_disable_interrupts(priv);
2895
2896                 iwl4965_irq_handle_error(priv);
2897
2898                 handled |= CSR_INT_BIT_HW_ERR;
2899
2900                 spin_unlock_irqrestore(&priv->lock, flags);
2901
2902                 return;
2903         }
2904
2905 #ifdef CONFIG_IWLWIFI_DEBUG
2906         if (priv->debug_level & (IWL_DL_ISR)) {
2907                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2908                 if (inta & CSR_INT_BIT_SCD)
2909                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2910                                       "the frame/frames.\n");
2911
2912                 /* Alive notification via Rx interrupt will do the real work */
2913                 if (inta & CSR_INT_BIT_ALIVE)
2914                         IWL_DEBUG_ISR("Alive interrupt\n");
2915         }
2916 #endif
2917         /* Safely ignore these bits for debug checks below */
2918         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2919
2920         /* HW RF KILL switch toggled */
2921         if (inta & CSR_INT_BIT_RF_KILL) {
2922                 int hw_rf_kill = 0;
2923                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2924                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2925                         hw_rf_kill = 1;
2926
2927                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2928                                 hw_rf_kill ? "disable radio":"enable radio");
2929
2930                 /* Queue restart only if RF_KILL switch was set to "kill"
2931                  *   when we loaded driver, and is now set to "enable".
2932                  * After we're Alive, RF_KILL gets handled by
2933                  *   iwl4965_rx_card_state_notif() */
2934                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2935                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2936                         queue_work(priv->workqueue, &priv->restart);
2937                 }
2938
2939                 handled |= CSR_INT_BIT_RF_KILL;
2940         }
2941
2942         /* Chip got too hot and stopped itself */
2943         if (inta & CSR_INT_BIT_CT_KILL) {
2944                 IWL_ERROR("Microcode CT kill error detected.\n");
2945                 handled |= CSR_INT_BIT_CT_KILL;
2946         }
2947
2948         /* Error detected by uCode */
2949         if (inta & CSR_INT_BIT_SW_ERR) {
2950                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2951                           inta);
2952                 iwl4965_irq_handle_error(priv);
2953                 handled |= CSR_INT_BIT_SW_ERR;
2954         }
2955
2956         /* uCode wakes up after power-down sleep */
2957         if (inta & CSR_INT_BIT_WAKEUP) {
2958                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2959                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2960                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2961                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2962                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2963                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2964                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2965                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2966
2967                 handled |= CSR_INT_BIT_WAKEUP;
2968         }
2969
2970         /* All uCode command responses, including Tx command responses,
2971          * Rx "responses" (frame-received notification), and other
2972          * notifications from uCode come through here*/
2973         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2974                 iwl_rx_handle(priv);
2975                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2976         }
2977
2978         if (inta & CSR_INT_BIT_FH_TX) {
2979                 IWL_DEBUG_ISR("Tx interrupt\n");
2980                 handled |= CSR_INT_BIT_FH_TX;
2981                 /* FH finished to write, send event */
2982                 priv->ucode_write_complete = 1;
2983                 wake_up_interruptible(&priv->wait_command_queue);
2984         }
2985
2986         if (inta & ~handled)
2987                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2988
2989         if (inta & ~CSR_INI_SET_MASK) {
2990                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2991                          inta & ~CSR_INI_SET_MASK);
2992                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2993         }
2994
2995         /* Re-enable all interrupts */
2996         /* only Re-enable if diabled by irq */
2997         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2998                 iwl4965_enable_interrupts(priv);
2999
3000 #ifdef CONFIG_IWLWIFI_DEBUG
3001         if (priv->debug_level & (IWL_DL_ISR)) {
3002                 inta = iwl_read32(priv, CSR_INT);
3003                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
3004                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3005                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
3006                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
3007         }
3008 #endif
3009         spin_unlock_irqrestore(&priv->lock, flags);
3010 }
3011
3012 static irqreturn_t iwl4965_isr(int irq, void *data)
3013 {
3014         struct iwl_priv *priv = data;
3015         u32 inta, inta_mask;
3016         u32 inta_fh;
3017         if (!priv)
3018                 return IRQ_NONE;
3019
3020         spin_lock(&priv->lock);
3021
3022         /* Disable (but don't clear!) interrupts here to avoid
3023          *    back-to-back ISRs and sporadic interrupts from our NIC.
3024          * If we have something to service, the tasklet will re-enable ints.
3025          * If we *don't* have something, we'll re-enable before leaving here. */
3026         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
3027         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
3028
3029         /* Discover which interrupts are active/pending */
3030         inta = iwl_read32(priv, CSR_INT);
3031         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
3032
3033         /* Ignore interrupt if there's nothing in NIC to service.
3034          * This may be due to IRQ shared with another device,
3035          * or due to sporadic interrupts thrown from our NIC. */
3036         if (!inta && !inta_fh) {
3037                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
3038                 goto none;
3039         }
3040
3041         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
3042                 /* Hardware disappeared. It might have already raised
3043                  * an interrupt */
3044                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
3045                 goto unplugged;
3046         }
3047
3048         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
3049                       inta, inta_mask, inta_fh);
3050
3051         inta &= ~CSR_INT_BIT_SCD;
3052
3053         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
3054         if (likely(inta || inta_fh))
3055                 tasklet_schedule(&priv->irq_tasklet);
3056
3057  unplugged:
3058         spin_unlock(&priv->lock);
3059         return IRQ_HANDLED;
3060
3061  none:
3062         /* re-enable interrupts here since we don't have anything to service. */
3063         /* only Re-enable if diabled by irq */
3064         if (test_bit(STATUS_INT_ENABLED, &priv->status))
3065                 iwl4965_enable_interrupts(priv);
3066         spin_unlock(&priv->lock);
3067         return IRQ_NONE;
3068 }
3069
3070 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
3071  * sending probe req.  This should be set long enough to hear probe responses
3072  * from more than one AP.  */
3073 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
3074 #define IWL_ACTIVE_DWELL_TIME_52    (10)
3075
3076 /* For faster active scanning, scan will move to the next channel if fewer than
3077  * PLCP_QUIET_THRESH packets are heard on this channel within
3078  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
3079  * time if it's a quiet channel (nothing responded to our probe, and there's
3080  * no other traffic).
3081  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
3082 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
3083 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
3084
3085 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
3086  * Must be set longer than active dwell time.
3087  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
3088 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
3089 #define IWL_PASSIVE_DWELL_TIME_52   (10)
3090 #define IWL_PASSIVE_DWELL_BASE      (100)
3091 #define IWL_CHANNEL_TUNE_TIME       5
3092
3093 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
3094                                                 enum ieee80211_band band)
3095 {
3096         if (band == IEEE80211_BAND_5GHZ)
3097                 return IWL_ACTIVE_DWELL_TIME_52;
3098         else
3099                 return IWL_ACTIVE_DWELL_TIME_24;
3100 }
3101
3102 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
3103                                           enum ieee80211_band band)
3104 {
3105         u16 active = iwl4965_get_active_dwell_time(priv, band);
3106         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
3107             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
3108             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
3109
3110         if (iwl_is_associated(priv)) {
3111                 /* If we're associated, we clamp the maximum passive
3112                  * dwell time to be 98% of the beacon interval (minus
3113                  * 2 * channel tune time) */
3114                 passive = priv->beacon_int;
3115                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
3116                         passive = IWL_PASSIVE_DWELL_BASE;
3117                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
3118         }
3119
3120         if (passive <= active)
3121                 passive = active + 1;
3122
3123         return passive;
3124 }
3125
3126 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
3127                                          enum ieee80211_band band,
3128                                      u8 is_active, u8 direct_mask,
3129                                      struct iwl4965_scan_channel *scan_ch)
3130 {
3131         const struct ieee80211_channel *channels = NULL;
3132         const struct ieee80211_supported_band *sband;
3133         const struct iwl_channel_info *ch_info;
3134         u16 passive_dwell = 0;
3135         u16 active_dwell = 0;
3136         int added, i;
3137
3138         sband = iwl_get_hw_mode(priv, band);
3139         if (!sband)
3140                 return 0;
3141
3142         channels = sband->channels;
3143
3144         active_dwell = iwl4965_get_active_dwell_time(priv, band);
3145         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
3146
3147         for (i = 0, added = 0; i < sband->n_channels; i++) {
3148                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3149                         continue;
3150
3151                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
3152
3153                 ch_info = iwl_get_channel_info(priv, band,
3154                                          scan_ch->channel);
3155                 if (!is_channel_valid(ch_info)) {
3156                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
3157                                        scan_ch->channel);
3158                         continue;
3159                 }
3160
3161                 if (!is_active || is_channel_passive(ch_info) ||
3162                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
3163                         scan_ch->type = 0;      /* passive */
3164                 else
3165                         scan_ch->type = 1;      /* active */
3166
3167                 if (scan_ch->type & 1)
3168                         scan_ch->type |= (direct_mask << 1);
3169
3170                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
3171                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
3172
3173                 /* Set txpower levels to defaults */
3174                 scan_ch->tpc.dsp_atten = 110;
3175                 /* scan_pwr_info->tpc.dsp_atten; */
3176
3177                 /*scan_pwr_info->tpc.tx_gain; */
3178                 if (band == IEEE80211_BAND_5GHZ)
3179                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3180                 else {
3181                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3182                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3183                          * power level:
3184                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3185                          */
3186                 }
3187
3188                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3189                                scan_ch->channel,
3190                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3191                                (scan_ch->type & 1) ?
3192                                active_dwell : passive_dwell);
3193
3194                 scan_ch++;
3195                 added++;
3196         }
3197
3198         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3199         return added;
3200 }
3201
3202 /******************************************************************************
3203  *
3204  * uCode download functions
3205  *
3206  ******************************************************************************/
3207
3208 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3209 {
3210         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3211         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3212         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3213         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3214         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3215         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3216 }
3217
3218 static void iwl4965_nic_start(struct iwl_priv *priv)
3219 {
3220         /* Remove all resets to allow NIC to operate */
3221         iwl_write32(priv, CSR_RESET, 0);
3222 }
3223
3224
3225 /**
3226  * iwl4965_read_ucode - Read uCode images from disk file.
3227  *
3228  * Copy into buffers for card to fetch via bus-mastering
3229  */
3230 static int iwl4965_read_ucode(struct iwl_priv *priv)
3231 {
3232         struct iwl4965_ucode *ucode;
3233         int ret;
3234         const struct firmware *ucode_raw;
3235         const char *name = priv->cfg->fw_name;
3236         u8 *src;
3237         size_t len;
3238         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3239
3240         /* Ask kernel firmware_class module to get the boot firmware off disk.
3241          * request_firmware() is synchronous, file is in memory on return. */
3242         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3243         if (ret < 0) {
3244                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3245                                         name, ret);
3246                 goto error;
3247         }
3248
3249         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3250                        name, ucode_raw->size);
3251
3252         /* Make sure that we got at least our header! */
3253         if (ucode_raw->size < sizeof(*ucode)) {
3254                 IWL_ERROR("File size way too small!\n");
3255                 ret = -EINVAL;
3256                 goto err_release;
3257         }
3258
3259         /* Data from ucode file:  header followed by uCode images */
3260         ucode = (void *)ucode_raw->data;
3261
3262         ver = le32_to_cpu(ucode->ver);
3263         inst_size = le32_to_cpu(ucode->inst_size);
3264         data_size = le32_to_cpu(ucode->data_size);
3265         init_size = le32_to_cpu(ucode->init_size);
3266         init_data_size = le32_to_cpu(ucode->init_data_size);
3267         boot_size = le32_to_cpu(ucode->boot_size);
3268
3269         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3270         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3271                        inst_size);
3272         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3273                        data_size);
3274         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3275                        init_size);
3276         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3277                        init_data_size);
3278         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3279                        boot_size);
3280
3281         /* Verify size of file vs. image size info in file's header */
3282         if (ucode_raw->size < sizeof(*ucode) +
3283                 inst_size + data_size + init_size +
3284                 init_data_size + boot_size) {
3285
3286                 IWL_DEBUG_INFO("uCode file size %d too small\n",
3287                                (int)ucode_raw->size);
3288                 ret = -EINVAL;
3289                 goto err_release;
3290         }
3291
3292         /* Verify that uCode images will fit in card's SRAM */
3293         if (inst_size > priv->hw_params.max_inst_size) {
3294                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3295                                inst_size);
3296                 ret = -EINVAL;
3297                 goto err_release;
3298         }
3299
3300         if (data_size > priv->hw_params.max_data_size) {
3301                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3302                                 data_size);
3303                 ret = -EINVAL;
3304                 goto err_release;
3305         }
3306         if (init_size > priv->hw_params.max_inst_size) {
3307                 IWL_DEBUG_INFO
3308                     ("uCode init instr len %d too large to fit in\n",
3309                       init_size);
3310                 ret = -EINVAL;
3311                 goto err_release;
3312         }
3313         if (init_data_size > priv->hw_params.max_data_size) {
3314                 IWL_DEBUG_INFO
3315                     ("uCode init data len %d too large to fit in\n",
3316                       init_data_size);
3317                 ret = -EINVAL;
3318                 goto err_release;
3319         }
3320         if (boot_size > priv->hw_params.max_bsm_size) {
3321                 IWL_DEBUG_INFO
3322                     ("uCode boot instr len %d too large to fit in\n",
3323                       boot_size);
3324                 ret = -EINVAL;
3325                 goto err_release;
3326         }
3327
3328         /* Allocate ucode buffers for card's bus-master loading ... */
3329
3330         /* Runtime instructions and 2 copies of data:
3331          * 1) unmodified from disk
3332          * 2) backup cache for save/restore during power-downs */
3333         priv->ucode_code.len = inst_size;
3334         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3335
3336         priv->ucode_data.len = data_size;
3337         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3338
3339         priv->ucode_data_backup.len = data_size;
3340         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3341
3342         /* Initialization instructions and data */
3343         if (init_size && init_data_size) {
3344                 priv->ucode_init.len = init_size;
3345                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3346
3347                 priv->ucode_init_data.len = init_data_size;
3348                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3349
3350                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3351                         goto err_pci_alloc;
3352         }
3353
3354         /* Bootstrap (instructions only, no data) */
3355         if (boot_size) {
3356                 priv->ucode_boot.len = boot_size;
3357                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3358
3359                 if (!priv->ucode_boot.v_addr)
3360                         goto err_pci_alloc;
3361         }
3362
3363         /* Copy images into buffers for card's bus-master reads ... */
3364
3365         /* Runtime instructions (first block of data in file) */
3366         src = &ucode->data[0];
3367         len = priv->ucode_code.len;
3368         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3369         memcpy(priv->ucode_code.v_addr, src, len);
3370         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3371                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3372
3373         /* Runtime data (2nd block)
3374          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
3375         src = &ucode->data[inst_size];
3376         len = priv->ucode_data.len;
3377         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3378         memcpy(priv->ucode_data.v_addr, src, len);
3379         memcpy(priv->ucode_data_backup.v_addr, src, len);
3380
3381         /* Initialization instructions (3rd block) */
3382         if (init_size) {
3383                 src = &ucode->data[inst_size + data_size];
3384                 len = priv->ucode_init.len;
3385                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3386                                 len);
3387                 memcpy(priv->ucode_init.v_addr, src, len);
3388         }
3389
3390         /* Initialization data (4th block) */
3391         if (init_data_size) {
3392                 src = &ucode->data[inst_size + data_size + init_size];
3393                 len = priv->ucode_init_data.len;
3394                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3395                                len);
3396                 memcpy(priv->ucode_init_data.v_addr, src, len);
3397         }
3398
3399         /* Bootstrap instructions (5th block) */
3400         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3401         len = priv->ucode_boot.len;
3402         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3403         memcpy(priv->ucode_boot.v_addr, src, len);
3404
3405         /* We have our copies now, allow OS release its copies */
3406         release_firmware(ucode_raw);
3407         return 0;
3408
3409  err_pci_alloc:
3410         IWL_ERROR("failed to allocate pci memory\n");
3411         ret = -ENOMEM;
3412         iwl4965_dealloc_ucode_pci(priv);
3413
3414  err_release:
3415         release_firmware(ucode_raw);
3416
3417  error:
3418         return ret;
3419 }
3420
3421 /**
3422  * iwl4965_alive_start - called after REPLY_ALIVE notification received
3423  *                   from protocol/runtime uCode (initialization uCode's
3424  *                   Alive gets handled by iwl4965_init_alive_start()).
3425  */
3426 static void iwl4965_alive_start(struct iwl_priv *priv)
3427 {
3428         int ret = 0;
3429
3430         IWL_DEBUG_INFO("Runtime Alive received.\n");
3431
3432         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3433                 /* We had an error bringing up the hardware, so take it
3434                  * all the way back down so we can try again */
3435                 IWL_DEBUG_INFO("Alive failed.\n");
3436                 goto restart;
3437         }
3438
3439         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3440          * This is a paranoid check, because we would not have gotten the
3441          * "runtime" alive if code weren't properly loaded.  */
3442         if (iwl_verify_ucode(priv)) {
3443                 /* Runtime instruction load was bad;
3444                  * take it all the way back down so we can try again */
3445                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3446                 goto restart;
3447         }
3448
3449         iwlcore_clear_stations_table(priv);
3450
3451         ret = priv->cfg->ops->lib->alive_notify(priv);
3452         if (ret) {
3453                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3454                             ret);
3455                 goto restart;
3456         }
3457
3458         /* After the ALIVE response, we can send host commands to 4965 uCode */
3459         set_bit(STATUS_ALIVE, &priv->status);
3460
3461         /* Clear out the uCode error bit if it is set */
3462         clear_bit(STATUS_FW_ERROR, &priv->status);
3463
3464         if (iwl_is_rfkill(priv))
3465                 return;
3466
3467         ieee80211_start_queues(priv->hw);
3468
3469         priv->active_rate = priv->rates_mask;
3470         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3471
3472         if (iwl_is_associated(priv)) {
3473                 struct iwl_rxon_cmd *active_rxon =
3474                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
3475
3476                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3477                        sizeof(priv->staging_rxon));
3478                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3479         } else {
3480                 /* Initialize our rx_config data */
3481                 iwl4965_connection_init_rx_config(priv);
3482                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3483         }
3484
3485         /* Configure Bluetooth device coexistence support */
3486         iwl4965_send_bt_config(priv);
3487
3488         /* Configure the adapter for unassociated operation */
3489         iwl4965_commit_rxon(priv);
3490
3491         /* At this point, the NIC is initialized and operational */
3492         priv->notif_missed_beacons = 0;
3493
3494         iwl4965_rf_kill_ct_config(priv);
3495
3496         iwl_leds_register(priv);
3497
3498         IWL_DEBUG_INFO("ALIVE processing complete.\n");
3499         set_bit(STATUS_READY, &priv->status);
3500         wake_up_interruptible(&priv->wait_command_queue);
3501
3502         if (priv->error_recovering)
3503                 iwl4965_error_recovery(priv);
3504
3505         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3506         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3507         return;
3508
3509  restart:
3510         queue_work(priv->workqueue, &priv->restart);
3511 }
3512
3513 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3514
3515 static void __iwl4965_down(struct iwl_priv *priv)
3516 {
3517         unsigned long flags;
3518         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3519         struct ieee80211_conf *conf = NULL;
3520
3521         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3522
3523         conf = ieee80211_get_hw_conf(priv->hw);
3524
3525         if (!exit_pending)
3526                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3527
3528         iwl_leds_unregister(priv);
3529
3530         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3531
3532         iwlcore_clear_stations_table(priv);
3533
3534         /* Unblock any waiting calls */
3535         wake_up_interruptible_all(&priv->wait_command_queue);
3536
3537         /* Wipe out the EXIT_PENDING status bit if we are not actually
3538          * exiting the module */
3539         if (!exit_pending)
3540                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3541
3542         /* stop and reset the on-board processor */
3543         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3544
3545         /* tell the device to stop sending interrupts */
3546         spin_lock_irqsave(&priv->lock, flags);
3547         iwl4965_disable_interrupts(priv);
3548         spin_unlock_irqrestore(&priv->lock, flags);
3549         iwl_synchronize_irq(priv);
3550
3551         if (priv->mac80211_registered)
3552                 ieee80211_stop_queues(priv->hw);
3553
3554         /* If we have not previously called iwl4965_init() then
3555          * clear all bits but the RF Kill and SUSPEND bits and return */
3556         if (!iwl_is_init(priv)) {
3557                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3558                                         STATUS_RF_KILL_HW |
3559                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3560                                         STATUS_RF_KILL_SW |
3561                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3562                                         STATUS_GEO_CONFIGURED |
3563                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3564                                         STATUS_IN_SUSPEND;
3565                 goto exit;
3566         }
3567
3568         /* ...otherwise clear out all the status bits but the RF Kill and
3569          * SUSPEND bits and continue taking the NIC down. */
3570         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3571                                 STATUS_RF_KILL_HW |
3572                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3573                                 STATUS_RF_KILL_SW |
3574                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3575                                 STATUS_GEO_CONFIGURED |
3576                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3577                                 STATUS_IN_SUSPEND |
3578                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3579                                 STATUS_FW_ERROR;
3580
3581         spin_lock_irqsave(&priv->lock, flags);
3582         iwl_clear_bit(priv, CSR_GP_CNTRL,
3583                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3584         spin_unlock_irqrestore(&priv->lock, flags);
3585
3586         iwl4965_hw_txq_ctx_stop(priv);
3587         iwl4965_hw_rxq_stop(priv);
3588
3589         spin_lock_irqsave(&priv->lock, flags);
3590         if (!iwl_grab_nic_access(priv)) {
3591                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3592                                          APMG_CLK_VAL_DMA_CLK_RQT);
3593                 iwl_release_nic_access(priv);
3594         }
3595         spin_unlock_irqrestore(&priv->lock, flags);
3596
3597         udelay(5);
3598
3599         iwl4965_hw_nic_stop_master(priv);
3600         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
3601         iwl4965_hw_nic_reset(priv);
3602         priv->cfg->ops->lib->free_shared_mem(priv);
3603
3604  exit:
3605         memset(&priv->card_alive, 0, sizeof(struct iwl4965_alive_resp));
3606
3607         if (priv->ibss_beacon)
3608                 dev_kfree_skb(priv->ibss_beacon);
3609         priv->ibss_beacon = NULL;
3610
3611         /* clear out any free frames */
3612         iwl_clear_free_frames(priv);
3613 }
3614
3615 static void iwl4965_down(struct iwl_priv *priv)
3616 {
3617         mutex_lock(&priv->mutex);
3618         __iwl4965_down(priv);
3619         mutex_unlock(&priv->mutex);
3620
3621         iwl4965_cancel_deferred_work(priv);
3622 }
3623
3624 #define MAX_HW_RESTARTS 5
3625
3626 static int __iwl4965_up(struct iwl_priv *priv)
3627 {
3628         int i;
3629         int ret;
3630
3631         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3632                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3633                 return -EIO;
3634         }
3635
3636         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3637                 IWL_WARNING("Radio disabled by SW RF kill (module "
3638                             "parameter)\n");
3639                 iwl_rfkill_set_hw_state(priv);
3640                 return -ENODEV;
3641         }
3642
3643         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3644                 IWL_ERROR("ucode not available for device bringup\n");
3645                 return -EIO;
3646         }
3647
3648         /* If platform's RF_KILL switch is NOT set to KILL */
3649         if (iwl_read32(priv, CSR_GP_CNTRL) &
3650                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3651                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3652         else {
3653                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3654                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3655                         iwl_rfkill_set_hw_state(priv);
3656                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3657                         return -ENODEV;
3658                 }
3659         }
3660
3661         iwl_rfkill_set_hw_state(priv);
3662         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3663
3664         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3665         if (ret) {
3666                 IWL_ERROR("Unable to allocate shared memory\n");
3667                 return ret;
3668         }
3669
3670         ret = iwl_hw_nic_init(priv);
3671         if (ret) {
3672                 IWL_ERROR("Unable to init nic\n");
3673                 return ret;
3674         }
3675
3676         /* make sure rfkill handshake bits are cleared */
3677         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3678         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3679                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3680
3681         /* clear (again), then enable host interrupts */
3682         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3683         iwl4965_enable_interrupts(priv);
3684
3685         /* really make sure rfkill handshake bits are cleared */
3686         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3687         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3688
3689         /* Copy original ucode data image from disk into backup cache.
3690          * This will be used to initialize the on-board processor's
3691          * data SRAM for a clean start when the runtime program first loads. */
3692         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3693                priv->ucode_data.len);
3694
3695         /* We return success when we resume from suspend and rf_kill is on. */
3696         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3697                 return 0;
3698
3699         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3700
3701                 iwlcore_clear_stations_table(priv);
3702
3703                 /* load bootstrap state machine,
3704                  * load bootstrap program into processor's memory,
3705                  * prepare to load the "initialize" uCode */
3706                 ret = priv->cfg->ops->lib->load_ucode(priv);
3707
3708                 if (ret) {
3709                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3710                         continue;
3711                 }
3712
3713                 /* start card; "initialize" will load runtime ucode */
3714                 iwl4965_nic_start(priv);
3715
3716                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3717
3718                 return 0;
3719         }
3720
3721         set_bit(STATUS_EXIT_PENDING, &priv->status);
3722         __iwl4965_down(priv);
3723
3724         /* tried to restart and config the device for as long as our
3725          * patience could withstand */
3726         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3727         return -EIO;
3728 }
3729
3730
3731 /*****************************************************************************
3732  *
3733  * Workqueue callbacks
3734  *
3735  *****************************************************************************/
3736
3737 static void iwl4965_bg_init_alive_start(struct work_struct *data)
3738 {
3739         struct iwl_priv *priv =
3740             container_of(data, struct iwl_priv, init_alive_start.work);
3741
3742         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3743                 return;
3744
3745         mutex_lock(&priv->mutex);
3746         priv->cfg->ops->lib->init_alive_start(priv);
3747         mutex_unlock(&priv->mutex);
3748 }
3749
3750 static void iwl4965_bg_alive_start(struct work_struct *data)
3751 {
3752         struct iwl_priv *priv =
3753             container_of(data, struct iwl_priv, alive_start.work);
3754
3755         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3756                 return;
3757
3758         mutex_lock(&priv->mutex);
3759         iwl4965_alive_start(priv);
3760         mutex_unlock(&priv->mutex);
3761 }
3762
3763 static void iwl4965_bg_rf_kill(struct work_struct *work)
3764 {
3765         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3766
3767         wake_up_interruptible(&priv->wait_command_queue);
3768
3769         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3770                 return;
3771
3772         mutex_lock(&priv->mutex);
3773
3774         if (!iwl_is_rfkill(priv)) {
3775                 IWL_DEBUG(IWL_DL_RF_KILL,
3776                           "HW and/or SW RF Kill no longer active, restarting "
3777                           "device\n");
3778                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3779                         queue_work(priv->workqueue, &priv->restart);
3780         } else {
3781                 /* make sure mac80211 stop sending Tx frame */
3782                 if (priv->mac80211_registered)
3783                         ieee80211_stop_queues(priv->hw);
3784
3785                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3786                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3787                                           "disabled by SW switch\n");
3788                 else
3789                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3790                                     "Kill switch must be turned off for "
3791                                     "wireless networking to work.\n");
3792         }
3793         iwl_rfkill_set_hw_state(priv);
3794
3795         mutex_unlock(&priv->mutex);
3796 }
3797
3798 static void iwl4965_bg_set_monitor(struct work_struct *work)
3799 {
3800         struct iwl_priv *priv = container_of(work,
3801                                 struct iwl_priv, set_monitor);
3802
3803         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3804
3805         mutex_lock(&priv->mutex);
3806
3807         if (!iwl_is_ready(priv))
3808                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3809         else
3810                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3811                         IWL_ERROR("iwl4965_set_mode() failed\n");
3812
3813         mutex_unlock(&priv->mutex);
3814 }
3815
3816 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3817
3818 static void iwl4965_bg_scan_check(struct work_struct *data)
3819 {
3820         struct iwl_priv *priv =
3821             container_of(data, struct iwl_priv, scan_check.work);
3822
3823         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3824                 return;
3825
3826         mutex_lock(&priv->mutex);
3827         if (test_bit(STATUS_SCANNING, &priv->status) ||
3828             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3829                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3830                         "adapter (%dms)\n",
3831                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3832
3833                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3834                         iwl4965_send_scan_abort(priv);
3835         }
3836         mutex_unlock(&priv->mutex);
3837 }
3838
3839 static void iwl4965_bg_request_scan(struct work_struct *data)
3840 {
3841         struct iwl_priv *priv =
3842             container_of(data, struct iwl_priv, request_scan);
3843         struct iwl_host_cmd cmd = {
3844                 .id = REPLY_SCAN_CMD,
3845                 .len = sizeof(struct iwl4965_scan_cmd),
3846                 .meta.flags = CMD_SIZE_HUGE,
3847         };
3848         struct iwl4965_scan_cmd *scan;
3849         struct ieee80211_conf *conf = NULL;
3850         u16 cmd_len;
3851         enum ieee80211_band band;
3852         u8 direct_mask;
3853         int ret = 0;
3854
3855         conf = ieee80211_get_hw_conf(priv->hw);
3856
3857         mutex_lock(&priv->mutex);
3858
3859         if (!iwl_is_ready(priv)) {
3860                 IWL_WARNING("request scan called when driver not ready.\n");
3861                 goto done;
3862         }
3863
3864         /* Make sure the scan wasn't cancelled before this queued work
3865          * was given the chance to run... */
3866         if (!test_bit(STATUS_SCANNING, &priv->status))
3867                 goto done;
3868
3869         /* This should never be called or scheduled if there is currently
3870          * a scan active in the hardware. */
3871         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3872                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3873                                "Ignoring second request.\n");
3874                 ret = -EIO;
3875                 goto done;
3876         }
3877
3878         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3879                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3880                 goto done;
3881         }
3882
3883         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3884                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3885                 goto done;
3886         }
3887
3888         if (iwl_is_rfkill(priv)) {
3889                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3890                 goto done;
3891         }
3892
3893         if (!test_bit(STATUS_READY, &priv->status)) {
3894                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3895                 goto done;
3896         }
3897
3898         if (!priv->scan_bands) {
3899                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3900                 goto done;
3901         }
3902
3903         if (!priv->scan) {
3904                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3905                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3906                 if (!priv->scan) {
3907                         ret = -ENOMEM;
3908                         goto done;
3909                 }
3910         }
3911         scan = priv->scan;
3912         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3913
3914         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3915         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3916
3917         if (iwl_is_associated(priv)) {
3918                 u16 interval = 0;
3919                 u32 extra;
3920                 u32 suspend_time = 100;
3921                 u32 scan_suspend_time = 100;
3922                 unsigned long flags;
3923
3924                 IWL_DEBUG_INFO("Scanning while associated...\n");
3925
3926                 spin_lock_irqsave(&priv->lock, flags);
3927                 interval = priv->beacon_int;
3928                 spin_unlock_irqrestore(&priv->lock, flags);
3929
3930                 scan->suspend_time = 0;
3931                 scan->max_out_time = cpu_to_le32(200 * 1024);
3932                 if (!interval)
3933                         interval = suspend_time;
3934
3935                 extra = (suspend_time / interval) << 22;
3936                 scan_suspend_time = (extra |
3937                     ((suspend_time % interval) * 1024));
3938                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3939                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3940                                scan_suspend_time, interval);
3941         }
3942
3943         /* We should add the ability for user to lock to PASSIVE ONLY */
3944         if (priv->one_direct_scan) {
3945                 IWL_DEBUG_SCAN
3946                     ("Kicking off one direct scan for '%s'\n",
3947                      iwl4965_escape_essid(priv->direct_ssid,
3948                                       priv->direct_ssid_len));
3949                 scan->direct_scan[0].id = WLAN_EID_SSID;
3950                 scan->direct_scan[0].len = priv->direct_ssid_len;
3951                 memcpy(scan->direct_scan[0].ssid,
3952                        priv->direct_ssid, priv->direct_ssid_len);
3953                 direct_mask = 1;
3954         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3955                 IWL_DEBUG_SCAN
3956                   ("Kicking off one direct scan for '%s' when not associated\n",
3957                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3958                 scan->direct_scan[0].id = WLAN_EID_SSID;
3959                 scan->direct_scan[0].len = priv->essid_len;
3960                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3961                 direct_mask = 1;
3962         } else {
3963                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3964                 direct_mask = 0;
3965         }
3966
3967         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3968         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3969         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3970
3971
3972         switch (priv->scan_bands) {
3973         case 2:
3974                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3975                 scan->tx_cmd.rate_n_flags =
3976                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3977                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3978
3979                 scan->good_CRC_th = 0;
3980                 band = IEEE80211_BAND_2GHZ;
3981                 break;
3982
3983         case 1:
3984                 scan->tx_cmd.rate_n_flags =
3985                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3986                                 RATE_MCS_ANT_B_MSK);
3987                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3988                 band = IEEE80211_BAND_5GHZ;
3989                 break;
3990
3991         default:
3992                 IWL_WARNING("Invalid scan band count\n");
3993                 goto done;
3994         }
3995
3996         /* We don't build a direct scan probe request; the uCode will do
3997          * that based on the direct_mask added to each channel entry */
3998         cmd_len = iwl4965_fill_probe_req(priv, band,
3999                                         (struct ieee80211_mgmt *)scan->data,
4000                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
4001
4002         scan->tx_cmd.len = cpu_to_le16(cmd_len);
4003         /* select Rx chains */
4004
4005         /* Force use of chains B and C (0x6) for scan Rx.
4006          * Avoid A (0x1) because of its off-channel reception on A-band.
4007          * MIMO is not used here, but value is required to make uCode happy. */
4008         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
4009                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
4010                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
4011                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
4012
4013         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
4014                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
4015
4016         if (direct_mask)
4017                 scan->channel_count =
4018                         iwl4965_get_channels_for_scan(
4019                                 priv, band, 1, /* active */
4020                                 direct_mask,
4021                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4022         else
4023                 scan->channel_count =
4024                         iwl4965_get_channels_for_scan(
4025                                 priv, band, 0, /* passive */
4026                                 direct_mask,
4027                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
4028
4029         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
4030                                RXON_FILTER_BCON_AWARE_MSK);
4031         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
4032             scan->channel_count * sizeof(struct iwl4965_scan_channel);
4033         cmd.data = scan;
4034         scan->len = cpu_to_le16(cmd.len);
4035
4036         set_bit(STATUS_SCAN_HW, &priv->status);
4037         ret = iwl_send_cmd_sync(priv, &cmd);
4038         if (ret)
4039                 goto done;
4040
4041         queue_delayed_work(priv->workqueue, &priv->scan_check,
4042                            IWL_SCAN_CHECK_WATCHDOG);
4043
4044         mutex_unlock(&priv->mutex);
4045         return;
4046
4047  done:
4048         /* inform mac80211 scan aborted */
4049         queue_work(priv->workqueue, &priv->scan_completed);
4050         mutex_unlock(&priv->mutex);
4051 }
4052
4053 static void iwl4965_bg_up(struct work_struct *data)
4054 {
4055         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
4056
4057         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4058                 return;
4059
4060         mutex_lock(&priv->mutex);
4061         __iwl4965_up(priv);
4062         mutex_unlock(&priv->mutex);
4063 }
4064
4065 static void iwl4965_bg_restart(struct work_struct *data)
4066 {
4067         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
4068
4069         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4070                 return;
4071
4072         iwl4965_down(priv);
4073         queue_work(priv->workqueue, &priv->up);
4074 }
4075
4076 static void iwl4965_bg_rx_replenish(struct work_struct *data)
4077 {
4078         struct iwl_priv *priv =
4079             container_of(data, struct iwl_priv, rx_replenish);
4080
4081         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4082                 return;
4083
4084         mutex_lock(&priv->mutex);
4085         iwl_rx_replenish(priv);
4086         mutex_unlock(&priv->mutex);
4087 }
4088
4089 #define IWL_DELAY_NEXT_SCAN (HZ*2)
4090
4091 static void iwl4965_post_associate(struct iwl_priv *priv)
4092 {
4093         struct ieee80211_conf *conf = NULL;
4094         int ret = 0;
4095         DECLARE_MAC_BUF(mac);
4096
4097         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4098                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
4099                 return;
4100         }
4101
4102         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
4103                         priv->assoc_id,
4104                         print_mac(mac, priv->active_rxon.bssid_addr));
4105
4106
4107         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4108                 return;
4109
4110
4111         if (!priv->vif || !priv->is_open)
4112                 return;
4113
4114         iwl4965_scan_cancel_timeout(priv, 200);
4115
4116         conf = ieee80211_get_hw_conf(priv->hw);
4117
4118         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4119         iwl4965_commit_rxon(priv);
4120
4121         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4122         iwl4965_setup_rxon_timing(priv);
4123         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4124                               sizeof(priv->rxon_timing), &priv->rxon_timing);
4125         if (ret)
4126                 IWL_WARNING("REPLY_RXON_TIMING failed - "
4127                             "Attempting to continue.\n");
4128
4129         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4130
4131 #ifdef CONFIG_IWL4965_HT
4132         if (priv->current_ht_config.is_ht)
4133                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
4134 #endif /* CONFIG_IWL4965_HT*/
4135         iwl_set_rxon_chain(priv);
4136         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4137
4138         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
4139                         priv->assoc_id, priv->beacon_int);
4140
4141         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4142                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4143         else
4144                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4145
4146         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4147                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
4148                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
4149                 else
4150                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4151
4152                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4153                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
4154
4155         }
4156
4157         iwl4965_commit_rxon(priv);
4158
4159         switch (priv->iw_mode) {
4160         case IEEE80211_IF_TYPE_STA:
4161                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
4162                 break;
4163
4164         case IEEE80211_IF_TYPE_IBSS:
4165
4166                 /* clear out the station table */
4167                 iwlcore_clear_stations_table(priv);
4168
4169                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4170                 iwl_rxon_add_station(priv, priv->bssid, 0);
4171                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
4172                 iwl4965_send_beacon_cmd(priv);
4173
4174                 break;
4175
4176         default:
4177                 IWL_ERROR("%s Should not be called in %d mode\n",
4178                                 __FUNCTION__, priv->iw_mode);
4179                 break;
4180         }
4181
4182         iwl4965_sequence_reset(priv);
4183
4184         /* Enable Rx differential gain and sensitivity calibrations */
4185         iwl_chain_noise_reset(priv);
4186         priv->start_calib = 1;
4187
4188         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4189                 priv->assoc_station_added = 1;
4190
4191         iwl4965_activate_qos(priv, 0);
4192
4193         iwl_power_update_mode(priv, 0);
4194         /* we have just associated, don't start scan too early */
4195         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4196 }
4197
4198
4199 static void iwl4965_bg_post_associate(struct work_struct *data)
4200 {
4201         struct iwl_priv *priv = container_of(data, struct iwl_priv,
4202                                              post_associate.work);
4203
4204         mutex_lock(&priv->mutex);
4205         iwl4965_post_associate(priv);
4206         mutex_unlock(&priv->mutex);
4207
4208 }
4209
4210 static void iwl4965_bg_abort_scan(struct work_struct *work)
4211 {
4212         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4213
4214         if (!iwl_is_ready(priv))
4215                 return;
4216
4217         mutex_lock(&priv->mutex);
4218
4219         set_bit(STATUS_SCAN_ABORTING, &priv->status);
4220         iwl4965_send_scan_abort(priv);
4221
4222         mutex_unlock(&priv->mutex);
4223 }
4224
4225 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4226
4227 static void iwl4965_bg_scan_completed(struct work_struct *work)
4228 {
4229         struct iwl_priv *priv =
4230             container_of(work, struct iwl_priv, scan_completed);
4231
4232         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4233
4234         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4235                 return;
4236
4237         if (test_bit(STATUS_CONF_PENDING, &priv->status))
4238                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4239
4240         ieee80211_scan_completed(priv->hw);
4241
4242         /* Since setting the TXPOWER may have been deferred while
4243          * performing the scan, fire one off */
4244         mutex_lock(&priv->mutex);
4245         iwl4965_hw_reg_send_txpower(priv);
4246         mutex_unlock(&priv->mutex);
4247 }
4248
4249 /*****************************************************************************
4250  *
4251  * mac80211 entry point functions
4252  *
4253  *****************************************************************************/
4254
4255 #define UCODE_READY_TIMEOUT     (2 * HZ)
4256
4257 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4258 {
4259         struct iwl_priv *priv = hw->priv;
4260         int ret;
4261
4262         IWL_DEBUG_MAC80211("enter\n");
4263
4264         if (pci_enable_device(priv->pci_dev)) {
4265                 IWL_ERROR("Fail to pci_enable_device\n");
4266                 return -ENODEV;
4267         }
4268         pci_restore_state(priv->pci_dev);
4269         pci_enable_msi(priv->pci_dev);
4270
4271         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4272                           DRV_NAME, priv);
4273         if (ret) {
4274                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4275                 goto out_disable_msi;
4276         }
4277
4278         /* we should be verifying the device is ready to be opened */
4279         mutex_lock(&priv->mutex);
4280
4281         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4282         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4283          * ucode filename and max sizes are card-specific. */
4284
4285         if (!priv->ucode_code.len) {
4286                 ret = iwl4965_read_ucode(priv);
4287                 if (ret) {
4288                         IWL_ERROR("Could not read microcode: %d\n", ret);
4289                         mutex_unlock(&priv->mutex);
4290                         goto out_release_irq;
4291                 }
4292         }
4293
4294         ret = __iwl4965_up(priv);
4295
4296         mutex_unlock(&priv->mutex);
4297
4298         if (ret)
4299                 goto out_release_irq;
4300
4301         IWL_DEBUG_INFO("Start UP work done.\n");
4302
4303         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4304                 return 0;
4305
4306         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4307          * mac80211 will not be run successfully. */
4308         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4309                         test_bit(STATUS_READY, &priv->status),
4310                         UCODE_READY_TIMEOUT);
4311         if (!ret) {
4312                 if (!test_bit(STATUS_READY, &priv->status)) {
4313                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4314                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
4315                         ret = -ETIMEDOUT;
4316                         goto out_release_irq;
4317                 }
4318         }
4319
4320         priv->is_open = 1;
4321         IWL_DEBUG_MAC80211("leave\n");
4322         return 0;
4323
4324 out_release_irq:
4325         free_irq(priv->pci_dev->irq, priv);
4326 out_disable_msi:
4327         pci_disable_msi(priv->pci_dev);
4328         pci_disable_device(priv->pci_dev);
4329         priv->is_open = 0;
4330         IWL_DEBUG_MAC80211("leave - failed\n");
4331         return ret;
4332 }
4333
4334 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4335 {
4336         struct iwl_priv *priv = hw->priv;
4337
4338         IWL_DEBUG_MAC80211("enter\n");
4339
4340         if (!priv->is_open) {
4341                 IWL_DEBUG_MAC80211("leave - skip\n");
4342                 return;
4343         }
4344
4345         priv->is_open = 0;
4346
4347         if (iwl_is_ready_rf(priv)) {
4348                 /* stop mac, cancel any scan request and clear
4349                  * RXON_FILTER_ASSOC_MSK BIT
4350                  */
4351                 mutex_lock(&priv->mutex);
4352                 iwl4965_scan_cancel_timeout(priv, 100);
4353                 cancel_delayed_work(&priv->post_associate);
4354                 mutex_unlock(&priv->mutex);
4355         }
4356
4357         iwl4965_down(priv);
4358
4359         flush_workqueue(priv->workqueue);
4360         free_irq(priv->pci_dev->irq, priv);
4361         pci_disable_msi(priv->pci_dev);
4362         pci_save_state(priv->pci_dev);
4363         pci_disable_device(priv->pci_dev);
4364
4365         IWL_DEBUG_MAC80211("leave\n");
4366 }
4367
4368 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
4369                       struct ieee80211_tx_control *ctl)
4370 {
4371         struct iwl_priv *priv = hw->priv;
4372
4373         IWL_DEBUG_MAC80211("enter\n");
4374
4375         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4376                 IWL_DEBUG_MAC80211("leave - monitor\n");
4377                 return -1;
4378         }
4379
4380         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4381                      ctl->tx_rate->bitrate);
4382
4383         if (iwl_tx_skb(priv, skb, ctl))
4384                 dev_kfree_skb_any(skb);
4385
4386         IWL_DEBUG_MAC80211("leave\n");
4387         return 0;
4388 }
4389
4390 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4391                                  struct ieee80211_if_init_conf *conf)
4392 {
4393         struct iwl_priv *priv = hw->priv;
4394         unsigned long flags;
4395         DECLARE_MAC_BUF(mac);
4396
4397         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4398
4399         if (priv->vif) {
4400                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4401                 return -EOPNOTSUPP;
4402         }
4403
4404         spin_lock_irqsave(&priv->lock, flags);
4405         priv->vif = conf->vif;
4406
4407         spin_unlock_irqrestore(&priv->lock, flags);
4408
4409         mutex_lock(&priv->mutex);
4410
4411         if (conf->mac_addr) {
4412                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4413                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4414         }
4415
4416         if (iwl_is_ready(priv))
4417                 iwl4965_set_mode(priv, conf->type);
4418
4419         mutex_unlock(&priv->mutex);
4420
4421         IWL_DEBUG_MAC80211("leave\n");
4422         return 0;
4423 }
4424
4425 /**
4426  * iwl4965_mac_config - mac80211 config callback
4427  *
4428  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4429  * be set inappropriately and the driver currently sets the hardware up to
4430  * use it whenever needed.
4431  */
4432 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4433 {
4434         struct iwl_priv *priv = hw->priv;
4435         const struct iwl_channel_info *ch_info;
4436         unsigned long flags;
4437         int ret = 0;
4438
4439         mutex_lock(&priv->mutex);
4440         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4441
4442         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4443
4444         if (!iwl_is_ready(priv)) {
4445                 IWL_DEBUG_MAC80211("leave - not ready\n");
4446                 ret = -EIO;
4447                 goto out;
4448         }
4449
4450         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4451                      test_bit(STATUS_SCANNING, &priv->status))) {
4452                 IWL_DEBUG_MAC80211("leave - scanning\n");
4453                 set_bit(STATUS_CONF_PENDING, &priv->status);
4454                 mutex_unlock(&priv->mutex);
4455                 return 0;
4456         }
4457
4458         spin_lock_irqsave(&priv->lock, flags);
4459
4460         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4461                         ieee80211_frequency_to_channel(conf->channel->center_freq));
4462         if (!is_channel_valid(ch_info)) {
4463                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4464                 spin_unlock_irqrestore(&priv->lock, flags);
4465                 ret = -EINVAL;
4466                 goto out;
4467         }
4468
4469 #ifdef CONFIG_IWL4965_HT
4470         /* if we are switching from ht to 2.4 clear flags
4471          * from any ht related info since 2.4 does not
4472          * support ht */
4473         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4474 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4475             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4476 #endif
4477         )
4478                 priv->staging_rxon.flags = 0;
4479 #endif /* CONFIG_IWL4965_HT */
4480
4481         iwl_set_rxon_channel(priv, conf->channel->band,
4482                 ieee80211_frequency_to_channel(conf->channel->center_freq));
4483
4484         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4485
4486         /* The list of supported rates and rate mask can be different
4487          * for each band; since the band may have changed, reset
4488          * the rate mask to what mac80211 lists */
4489         iwl4965_set_rate(priv);
4490
4491         spin_unlock_irqrestore(&priv->lock, flags);
4492
4493 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4494         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4495                 iwl4965_hw_channel_switch(priv, conf->channel);
4496                 goto out;
4497         }
4498 #endif
4499
4500         if (priv->cfg->ops->lib->radio_kill_sw)
4501                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4502
4503         if (!conf->radio_enabled) {
4504                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4505                 goto out;
4506         }
4507
4508         if (iwl_is_rfkill(priv)) {
4509                 IWL_DEBUG_MAC80211("leave - RF kill\n");
4510                 ret = -EIO;
4511                 goto out;
4512         }
4513
4514         iwl4965_set_rate(priv);
4515
4516         if (memcmp(&priv->active_rxon,
4517                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4518                 iwl4965_commit_rxon(priv);
4519         else
4520                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4521
4522         IWL_DEBUG_MAC80211("leave\n");
4523
4524 out:
4525         clear_bit(STATUS_CONF_PENDING, &priv->status);
4526         mutex_unlock(&priv->mutex);
4527         return ret;
4528 }
4529
4530 static void iwl4965_config_ap(struct iwl_priv *priv)
4531 {
4532         int ret = 0;
4533
4534         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4535                 return;
4536
4537         /* The following should be done only at AP bring up */
4538         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4539
4540                 /* RXON - unassoc (to set timing command) */
4541                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4542                 iwl4965_commit_rxon(priv);
4543
4544                 /* RXON Timing */
4545                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4546                 iwl4965_setup_rxon_timing(priv);
4547                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4548                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
4549                 if (ret)
4550                         IWL_WARNING("REPLY_RXON_TIMING failed - "
4551                                         "Attempting to continue.\n");
4552
4553                 iwl_set_rxon_chain(priv);
4554
4555                 /* FIXME: what should be the assoc_id for AP? */
4556                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4557                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4558                         priv->staging_rxon.flags |=
4559                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4560                 else
4561                         priv->staging_rxon.flags &=
4562                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4563
4564                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4565                         if (priv->assoc_capability &
4566                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4567                                 priv->staging_rxon.flags |=
4568                                         RXON_FLG_SHORT_SLOT_MSK;
4569                         else
4570                                 priv->staging_rxon.flags &=
4571                                         ~RXON_FLG_SHORT_SLOT_MSK;
4572
4573                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4574                                 priv->staging_rxon.flags &=
4575                                         ~RXON_FLG_SHORT_SLOT_MSK;
4576                 }
4577                 /* restore RXON assoc */
4578                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4579                 iwl4965_commit_rxon(priv);
4580                 iwl4965_activate_qos(priv, 1);
4581                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4582         }
4583         iwl4965_send_beacon_cmd(priv);
4584
4585         /* FIXME - we need to add code here to detect a totally new
4586          * configuration, reset the AP, unassoc, rxon timing, assoc,
4587          * clear sta table, add BCAST sta... */
4588 }
4589
4590 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4591                                         struct ieee80211_vif *vif,
4592                                     struct ieee80211_if_conf *conf)
4593 {
4594         struct iwl_priv *priv = hw->priv;
4595         DECLARE_MAC_BUF(mac);
4596         unsigned long flags;
4597         int rc;
4598
4599         if (conf == NULL)
4600                 return -EIO;
4601
4602         if (priv->vif != vif) {
4603                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4604                 return 0;
4605         }
4606
4607         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4608             (!conf->beacon || !conf->ssid_len)) {
4609                 IWL_DEBUG_MAC80211
4610                     ("Leaving in AP mode because HostAPD is not ready.\n");
4611                 return 0;
4612         }
4613
4614         if (!iwl_is_alive(priv))
4615                 return -EAGAIN;
4616
4617         mutex_lock(&priv->mutex);
4618
4619         if (conf->bssid)
4620                 IWL_DEBUG_MAC80211("bssid: %s\n",
4621                                    print_mac(mac, conf->bssid));
4622
4623 /*
4624  * very dubious code was here; the probe filtering flag is never set:
4625  *
4626         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4627             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4628  */
4629
4630         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4631                 if (!conf->bssid) {
4632                         conf->bssid = priv->mac_addr;
4633                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4634                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4635                                            print_mac(mac, conf->bssid));
4636                 }
4637                 if (priv->ibss_beacon)
4638                         dev_kfree_skb(priv->ibss_beacon);
4639
4640                 priv->ibss_beacon = conf->beacon;
4641         }
4642
4643         if (iwl_is_rfkill(priv))
4644                 goto done;
4645
4646         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4647             !is_multicast_ether_addr(conf->bssid)) {
4648                 /* If there is currently a HW scan going on in the background
4649                  * then we need to cancel it else the RXON below will fail. */
4650                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4651                         IWL_WARNING("Aborted scan still in progress "
4652                                     "after 100ms\n");
4653                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4654                         mutex_unlock(&priv->mutex);
4655                         return -EAGAIN;
4656                 }
4657                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4658
4659                 /* TODO: Audit driver for usage of these members and see
4660                  * if mac80211 deprecates them (priv->bssid looks like it
4661                  * shouldn't be there, but I haven't scanned the IBSS code
4662                  * to verify) - jpk */
4663                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4664
4665                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4666                         iwl4965_config_ap(priv);
4667                 else {
4668                         rc = iwl4965_commit_rxon(priv);
4669                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4670                                 iwl_rxon_add_station(
4671                                         priv, priv->active_rxon.bssid_addr, 1);
4672                 }
4673
4674         } else {
4675                 iwl4965_scan_cancel_timeout(priv, 100);
4676                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4677                 iwl4965_commit_rxon(priv);
4678         }
4679
4680  done:
4681         spin_lock_irqsave(&priv->lock, flags);
4682         if (!conf->ssid_len)
4683                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4684         else
4685                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4686
4687         priv->essid_len = conf->ssid_len;
4688         spin_unlock_irqrestore(&priv->lock, flags);
4689
4690         IWL_DEBUG_MAC80211("leave\n");
4691         mutex_unlock(&priv->mutex);
4692
4693         return 0;
4694 }
4695
4696 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4697                                  unsigned int changed_flags,
4698                                  unsigned int *total_flags,
4699                                  int mc_count, struct dev_addr_list *mc_list)
4700 {
4701         /*
4702          * XXX: dummy
4703          * see also iwl4965_connection_init_rx_config
4704          */
4705         struct iwl_priv *priv = hw->priv;
4706         int new_flags = 0;
4707         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4708                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4709                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4710                                            IEEE80211_IF_TYPE_MNTR,
4711                                            changed_flags, *total_flags);
4712                         /* queue work 'cuz mac80211 is holding a lock which
4713                          * prevents us from issuing (synchronous) f/w cmds */
4714                         queue_work(priv->workqueue, &priv->set_monitor);
4715                         new_flags &= FIF_PROMISC_IN_BSS |
4716                                      FIF_OTHER_BSS |
4717                                      FIF_ALLMULTI;
4718                 }
4719         }
4720         *total_flags = new_flags;
4721 }
4722
4723 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4724                                      struct ieee80211_if_init_conf *conf)
4725 {
4726         struct iwl_priv *priv = hw->priv;
4727
4728         IWL_DEBUG_MAC80211("enter\n");
4729
4730         mutex_lock(&priv->mutex);
4731
4732         if (iwl_is_ready_rf(priv)) {
4733                 iwl4965_scan_cancel_timeout(priv, 100);
4734                 cancel_delayed_work(&priv->post_associate);
4735                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4736                 iwl4965_commit_rxon(priv);
4737         }
4738         if (priv->vif == conf->vif) {
4739                 priv->vif = NULL;
4740                 memset(priv->bssid, 0, ETH_ALEN);
4741                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4742                 priv->essid_len = 0;
4743         }
4744         mutex_unlock(&priv->mutex);
4745
4746         IWL_DEBUG_MAC80211("leave\n");
4747
4748 }
4749
4750 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4751 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4752                                      struct ieee80211_vif *vif,
4753                                      struct ieee80211_bss_conf *bss_conf,
4754                                      u32 changes)
4755 {
4756         struct iwl_priv *priv = hw->priv;
4757
4758         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4759
4760         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4761                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4762                                    bss_conf->use_short_preamble);
4763                 if (bss_conf->use_short_preamble)
4764                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4765                 else
4766                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4767         }
4768
4769         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4770                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4771                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4772                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4773                 else
4774                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4775         }
4776
4777         if (changes & BSS_CHANGED_HT) {
4778                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4779                 iwl4965_ht_conf(priv, bss_conf);
4780                 iwl_set_rxon_chain(priv);
4781         }
4782
4783         if (changes & BSS_CHANGED_ASSOC) {
4784                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4785                 /* This should never happen as this function should
4786                  * never be called from interrupt context. */
4787                 if (WARN_ON_ONCE(in_interrupt()))
4788                         return;
4789                 if (bss_conf->assoc) {
4790                         priv->assoc_id = bss_conf->aid;
4791                         priv->beacon_int = bss_conf->beacon_int;
4792                         priv->timestamp = bss_conf->timestamp;
4793                         priv->assoc_capability = bss_conf->assoc_capability;
4794                         priv->next_scan_jiffies = jiffies +
4795                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4796                         mutex_lock(&priv->mutex);
4797                         iwl4965_post_associate(priv);
4798                         mutex_unlock(&priv->mutex);
4799                 } else {
4800                         priv->assoc_id = 0;
4801                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4802                 }
4803         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4804                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4805                         iwl_send_rxon_assoc(priv);
4806         }
4807
4808 }
4809
4810 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4811 {
4812         int rc = 0;
4813         unsigned long flags;
4814         struct iwl_priv *priv = hw->priv;
4815
4816         IWL_DEBUG_MAC80211("enter\n");
4817
4818         mutex_lock(&priv->mutex);
4819         spin_lock_irqsave(&priv->lock, flags);
4820
4821         if (!iwl_is_ready_rf(priv)) {
4822                 rc = -EIO;
4823                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4824                 goto out_unlock;
4825         }
4826
4827         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4828                 rc = -EIO;
4829                 IWL_ERROR("ERROR: APs don't scan\n");
4830                 goto out_unlock;
4831         }
4832
4833         /* we don't schedule scan within next_scan_jiffies period */
4834         if (priv->next_scan_jiffies &&
4835                         time_after(priv->next_scan_jiffies, jiffies)) {
4836                 rc = -EAGAIN;
4837                 goto out_unlock;
4838         }
4839         /* if we just finished scan ask for delay */
4840         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4841                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4842                 rc = -EAGAIN;
4843                 goto out_unlock;
4844         }
4845         if (len) {
4846                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4847                                iwl4965_escape_essid(ssid, len), (int)len);
4848
4849                 priv->one_direct_scan = 1;
4850                 priv->direct_ssid_len = (u8)
4851                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4852                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4853         } else
4854                 priv->one_direct_scan = 0;
4855
4856         rc = iwl4965_scan_initiate(priv);
4857
4858         IWL_DEBUG_MAC80211("leave\n");
4859
4860 out_unlock:
4861         spin_unlock_irqrestore(&priv->lock, flags);
4862         mutex_unlock(&priv->mutex);
4863
4864         return rc;
4865 }
4866
4867 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4868                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4869                         u32 iv32, u16 *phase1key)
4870 {
4871         struct iwl_priv *priv = hw->priv;
4872         u8 sta_id = IWL_INVALID_STATION;
4873         unsigned long flags;
4874         __le16 key_flags = 0;
4875         int i;
4876         DECLARE_MAC_BUF(mac);
4877
4878         IWL_DEBUG_MAC80211("enter\n");
4879
4880         sta_id = iwl_find_station(priv, addr);
4881         if (sta_id == IWL_INVALID_STATION) {
4882                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4883                                    print_mac(mac, addr));
4884                 return;
4885         }
4886
4887         iwl4965_scan_cancel_timeout(priv, 100);
4888
4889         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4890         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4891         key_flags &= ~STA_KEY_FLG_INVALID;
4892
4893         if (sta_id == priv->hw_params.bcast_sta_id)
4894                 key_flags |= STA_KEY_MULTICAST_MSK;
4895
4896         spin_lock_irqsave(&priv->sta_lock, flags);
4897
4898         priv->stations[sta_id].sta.key.key_flags = key_flags;
4899         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4900
4901         for (i = 0; i < 5; i++)
4902                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4903                         cpu_to_le16(phase1key[i]);
4904
4905         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4906         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4907
4908         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4909
4910         spin_unlock_irqrestore(&priv->sta_lock, flags);
4911
4912         IWL_DEBUG_MAC80211("leave\n");
4913 }
4914
4915 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4916                            const u8 *local_addr, const u8 *addr,
4917                            struct ieee80211_key_conf *key)
4918 {
4919         struct iwl_priv *priv = hw->priv;
4920         DECLARE_MAC_BUF(mac);
4921         int ret = 0;
4922         u8 sta_id = IWL_INVALID_STATION;
4923         u8 is_default_wep_key = 0;
4924
4925         IWL_DEBUG_MAC80211("enter\n");
4926
4927         if (priv->hw_params.sw_crypto) {
4928                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4929                 return -EOPNOTSUPP;
4930         }
4931
4932         if (is_zero_ether_addr(addr))
4933                 /* only support pairwise keys */
4934                 return -EOPNOTSUPP;
4935
4936         sta_id = iwl_find_station(priv, addr);
4937         if (sta_id == IWL_INVALID_STATION) {
4938                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4939                                    print_mac(mac, addr));
4940                 return -EINVAL;
4941
4942         }
4943
4944         mutex_lock(&priv->mutex);
4945         iwl4965_scan_cancel_timeout(priv, 100);
4946         mutex_unlock(&priv->mutex);
4947
4948         /* If we are getting WEP group key and we didn't receive any key mapping
4949          * so far, we are in legacy wep mode (group key only), otherwise we are
4950          * in 1X mode.
4951          * In legacy wep mode, we use another host command to the uCode */
4952         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4953                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4954                 if (cmd == SET_KEY)
4955                         is_default_wep_key = !priv->key_mapping_key;
4956                 else
4957                         is_default_wep_key =
4958                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4959         }
4960
4961         switch (cmd) {
4962         case SET_KEY:
4963                 if (is_default_wep_key)
4964                         ret = iwl_set_default_wep_key(priv, key);
4965                 else
4966                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4967
4968                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4969                 break;
4970         case DISABLE_KEY:
4971                 if (is_default_wep_key)
4972                         ret = iwl_remove_default_wep_key(priv, key);
4973                 else
4974                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4975
4976                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4977                 break;
4978         default:
4979                 ret = -EINVAL;
4980         }
4981
4982         IWL_DEBUG_MAC80211("leave\n");
4983
4984         return ret;
4985 }
4986
4987 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4988                            const struct ieee80211_tx_queue_params *params)
4989 {
4990         struct iwl_priv *priv = hw->priv;
4991         unsigned long flags;
4992         int q;
4993
4994         IWL_DEBUG_MAC80211("enter\n");
4995
4996         if (!iwl_is_ready_rf(priv)) {
4997                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4998                 return -EIO;
4999         }
5000
5001         if (queue >= AC_NUM) {
5002                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
5003                 return 0;
5004         }
5005
5006         if (!priv->qos_data.qos_enable) {
5007                 priv->qos_data.qos_active = 0;
5008                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
5009                 return 0;
5010         }
5011         q = AC_NUM - 1 - queue;
5012
5013         spin_lock_irqsave(&priv->lock, flags);
5014
5015         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
5016         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
5017         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
5018         priv->qos_data.def_qos_parm.ac[q].edca_txop =
5019                         cpu_to_le16((params->txop * 32));
5020
5021         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
5022         priv->qos_data.qos_active = 1;
5023
5024         spin_unlock_irqrestore(&priv->lock, flags);
5025
5026         mutex_lock(&priv->mutex);
5027         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
5028                 iwl4965_activate_qos(priv, 1);
5029         else if (priv->assoc_id && iwl_is_associated(priv))
5030                 iwl4965_activate_qos(priv, 0);
5031
5032         mutex_unlock(&priv->mutex);
5033
5034         IWL_DEBUG_MAC80211("leave\n");
5035         return 0;
5036 }
5037
5038 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
5039                                 struct ieee80211_tx_queue_stats *stats)
5040 {
5041         struct iwl_priv *priv = hw->priv;
5042         int i, avail;
5043         struct iwl_tx_queue *txq;
5044         struct iwl_queue *q;
5045         unsigned long flags;
5046
5047         IWL_DEBUG_MAC80211("enter\n");
5048
5049         if (!iwl_is_ready_rf(priv)) {
5050                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5051                 return -EIO;
5052         }
5053
5054         spin_lock_irqsave(&priv->lock, flags);
5055
5056         for (i = 0; i < AC_NUM; i++) {
5057                 txq = &priv->txq[i];
5058                 q = &txq->q;
5059                 avail = iwl_queue_space(q);
5060
5061                 stats[i].len = q->n_window - avail;
5062                 stats[i].limit = q->n_window - q->high_mark;
5063                 stats[i].count = q->n_window;
5064
5065         }
5066         spin_unlock_irqrestore(&priv->lock, flags);
5067
5068         IWL_DEBUG_MAC80211("leave\n");
5069
5070         return 0;
5071 }
5072
5073 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
5074                              struct ieee80211_low_level_stats *stats)
5075 {
5076         struct iwl_priv *priv = hw->priv;
5077
5078         priv = hw->priv;
5079         IWL_DEBUG_MAC80211("enter\n");
5080         IWL_DEBUG_MAC80211("leave\n");
5081
5082         return 0;
5083 }
5084
5085 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
5086 {
5087         struct iwl_priv *priv;
5088
5089         priv = hw->priv;
5090         IWL_DEBUG_MAC80211("enter\n");
5091         IWL_DEBUG_MAC80211("leave\n");
5092
5093         return 0;
5094 }
5095
5096 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
5097 {
5098         struct iwl_priv *priv = hw->priv;
5099         unsigned long flags;
5100
5101         mutex_lock(&priv->mutex);
5102         IWL_DEBUG_MAC80211("enter\n");
5103
5104         priv->lq_mngr.lq_ready = 0;
5105 #ifdef CONFIG_IWL4965_HT
5106         spin_lock_irqsave(&priv->lock, flags);
5107         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
5108         spin_unlock_irqrestore(&priv->lock, flags);
5109 #endif /* CONFIG_IWL4965_HT */
5110
5111         iwl_reset_qos(priv);
5112
5113         cancel_delayed_work(&priv->post_associate);
5114
5115         spin_lock_irqsave(&priv->lock, flags);
5116         priv->assoc_id = 0;
5117         priv->assoc_capability = 0;
5118         priv->assoc_station_added = 0;
5119
5120         /* new association get rid of ibss beacon skb */
5121         if (priv->ibss_beacon)
5122                 dev_kfree_skb(priv->ibss_beacon);
5123
5124         priv->ibss_beacon = NULL;
5125
5126         priv->beacon_int = priv->hw->conf.beacon_int;
5127         priv->timestamp = 0;
5128         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
5129                 priv->beacon_int = 0;
5130
5131         spin_unlock_irqrestore(&priv->lock, flags);
5132
5133         if (!iwl_is_ready_rf(priv)) {
5134                 IWL_DEBUG_MAC80211("leave - not ready\n");
5135                 mutex_unlock(&priv->mutex);
5136                 return;
5137         }
5138
5139         /* we are restarting association process
5140          * clear RXON_FILTER_ASSOC_MSK bit
5141          */
5142         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
5143                 iwl4965_scan_cancel_timeout(priv, 100);
5144                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
5145                 iwl4965_commit_rxon(priv);
5146         }
5147
5148         iwl_power_update_mode(priv, 0);
5149
5150         /* Per mac80211.h: This is only used in IBSS mode... */
5151         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5152
5153                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
5154                 mutex_unlock(&priv->mutex);
5155                 return;
5156         }
5157
5158         iwl4965_set_rate(priv);
5159
5160         mutex_unlock(&priv->mutex);
5161
5162         IWL_DEBUG_MAC80211("leave\n");
5163 }
5164
5165 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb,
5166                                  struct ieee80211_tx_control *control)
5167 {
5168         struct iwl_priv *priv = hw->priv;
5169         unsigned long flags;
5170
5171         mutex_lock(&priv->mutex);
5172         IWL_DEBUG_MAC80211("enter\n");
5173
5174         if (!iwl_is_ready_rf(priv)) {
5175                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
5176                 mutex_unlock(&priv->mutex);
5177                 return -EIO;
5178         }
5179
5180         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5181                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5182                 mutex_unlock(&priv->mutex);
5183                 return -EIO;
5184         }
5185
5186         spin_lock_irqsave(&priv->lock, flags);
5187
5188         if (priv->ibss_beacon)
5189                 dev_kfree_skb(priv->ibss_beacon);
5190
5191         priv->ibss_beacon = skb;
5192
5193         priv->assoc_id = 0;
5194
5195         IWL_DEBUG_MAC80211("leave\n");
5196         spin_unlock_irqrestore(&priv->lock, flags);
5197
5198         iwl_reset_qos(priv);
5199
5200         queue_work(priv->workqueue, &priv->post_associate.work);
5201
5202         mutex_unlock(&priv->mutex);
5203
5204         return 0;
5205 }
5206
5207 /*****************************************************************************
5208  *
5209  * sysfs attributes
5210  *
5211  *****************************************************************************/
5212
5213 #ifdef CONFIG_IWLWIFI_DEBUG
5214
5215 /*
5216  * The following adds a new attribute to the sysfs representation
5217  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5218  * used for controlling the debug level.
5219  *
5220  * See the level definitions in iwl for details.
5221  */
5222
5223 static ssize_t show_debug_level(struct device *d,
5224                                 struct device_attribute *attr, char *buf)
5225 {
5226         struct iwl_priv *priv = d->driver_data;
5227
5228         return sprintf(buf, "0x%08X\n", priv->debug_level);
5229 }
5230 static ssize_t store_debug_level(struct device *d,
5231                                 struct device_attribute *attr,
5232                                  const char *buf, size_t count)
5233 {
5234         struct iwl_priv *priv = d->driver_data;
5235         char *p = (char *)buf;
5236         u32 val;
5237
5238         val = simple_strtoul(p, &p, 0);
5239         if (p == buf)
5240                 printk(KERN_INFO DRV_NAME
5241                        ": %s is not in hex or decimal form.\n", buf);
5242         else
5243                 priv->debug_level = val;
5244
5245         return strnlen(buf, count);
5246 }
5247
5248 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5249                         show_debug_level, store_debug_level);
5250
5251
5252 #endif /* CONFIG_IWLWIFI_DEBUG */
5253
5254
5255 static ssize_t show_version(struct device *d,
5256                                 struct device_attribute *attr, char *buf)
5257 {
5258         struct iwl_priv *priv = d->driver_data;
5259         struct iwl4965_alive_resp *palive = &priv->card_alive;
5260
5261         if (palive->is_valid)
5262                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5263                                     "fw type: 0x%01X 0x%01X\n",
5264                                 palive->ucode_major, palive->ucode_minor,
5265                                 palive->sw_rev[0], palive->sw_rev[1],
5266                                 palive->ver_type, palive->ver_subtype);
5267
5268         else
5269                 return sprintf(buf, "fw not loaded\n");
5270 }
5271
5272 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5273
5274 static ssize_t show_temperature(struct device *d,
5275                                 struct device_attribute *attr, char *buf)
5276 {
5277         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5278
5279         if (!iwl_is_alive(priv))
5280                 return -EAGAIN;
5281
5282         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5283 }
5284
5285 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5286
5287 static ssize_t show_rs_window(struct device *d,
5288                               struct device_attribute *attr,
5289                               char *buf)
5290 {
5291         struct iwl_priv *priv = d->driver_data;
5292         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5293 }
5294 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5295
5296 static ssize_t show_tx_power(struct device *d,
5297                              struct device_attribute *attr, char *buf)
5298 {
5299         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5300         return sprintf(buf, "%d\n", priv->user_txpower_limit);
5301 }
5302
5303 static ssize_t store_tx_power(struct device *d,
5304                               struct device_attribute *attr,
5305                               const char *buf, size_t count)
5306 {
5307         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5308         char *p = (char *)buf;
5309         u32 val;
5310
5311         val = simple_strtoul(p, &p, 10);
5312         if (p == buf)
5313                 printk(KERN_INFO DRV_NAME
5314                        ": %s is not in decimal form.\n", buf);
5315         else
5316                 iwl4965_hw_reg_set_txpower(priv, val);
5317
5318         return count;
5319 }
5320
5321 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5322
5323 static ssize_t show_flags(struct device *d,
5324                           struct device_attribute *attr, char *buf)
5325 {
5326         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5327
5328         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5329 }
5330
5331 static ssize_t store_flags(struct device *d,
5332                            struct device_attribute *attr,
5333                            const char *buf, size_t count)
5334 {
5335         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5336         u32 flags = simple_strtoul(buf, NULL, 0);
5337
5338         mutex_lock(&priv->mutex);
5339         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5340                 /* Cancel any currently running scans... */
5341                 if (iwl4965_scan_cancel_timeout(priv, 100))
5342                         IWL_WARNING("Could not cancel scan.\n");
5343                 else {
5344                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5345                                        flags);
5346                         priv->staging_rxon.flags = cpu_to_le32(flags);
5347                         iwl4965_commit_rxon(priv);
5348                 }
5349         }
5350         mutex_unlock(&priv->mutex);
5351
5352         return count;
5353 }
5354
5355 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5356
5357 static ssize_t show_filter_flags(struct device *d,
5358                                  struct device_attribute *attr, char *buf)
5359 {
5360         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5361
5362         return sprintf(buf, "0x%04X\n",
5363                 le32_to_cpu(priv->active_rxon.filter_flags));
5364 }
5365
5366 static ssize_t store_filter_flags(struct device *d,
5367                                   struct device_attribute *attr,
5368                                   const char *buf, size_t count)
5369 {
5370         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5371         u32 filter_flags = simple_strtoul(buf, NULL, 0);
5372
5373         mutex_lock(&priv->mutex);
5374         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5375                 /* Cancel any currently running scans... */
5376                 if (iwl4965_scan_cancel_timeout(priv, 100))
5377                         IWL_WARNING("Could not cancel scan.\n");
5378                 else {
5379                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5380                                        "0x%04X\n", filter_flags);
5381                         priv->staging_rxon.filter_flags =
5382                                 cpu_to_le32(filter_flags);
5383                         iwl4965_commit_rxon(priv);
5384                 }
5385         }
5386         mutex_unlock(&priv->mutex);
5387
5388         return count;
5389 }
5390
5391 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5392                    store_filter_flags);
5393
5394 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5395
5396 static ssize_t show_measurement(struct device *d,
5397                                 struct device_attribute *attr, char *buf)
5398 {
5399         struct iwl_priv *priv = dev_get_drvdata(d);
5400         struct iwl4965_spectrum_notification measure_report;
5401         u32 size = sizeof(measure_report), len = 0, ofs = 0;
5402         u8 *data = (u8 *) & measure_report;
5403         unsigned long flags;
5404
5405         spin_lock_irqsave(&priv->lock, flags);
5406         if (!(priv->measurement_status & MEASUREMENT_READY)) {
5407                 spin_unlock_irqrestore(&priv->lock, flags);
5408                 return 0;
5409         }
5410         memcpy(&measure_report, &priv->measure_report, size);
5411         priv->measurement_status = 0;
5412         spin_unlock_irqrestore(&priv->lock, flags);
5413
5414         while (size && (PAGE_SIZE - len)) {
5415                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5416                                    PAGE_SIZE - len, 1);
5417                 len = strlen(buf);
5418                 if (PAGE_SIZE - len)
5419                         buf[len++] = '\n';
5420
5421                 ofs += 16;
5422                 size -= min(size, 16U);
5423         }
5424
5425         return len;
5426 }
5427
5428 static ssize_t store_measurement(struct device *d,
5429                                  struct device_attribute *attr,
5430                                  const char *buf, size_t count)
5431 {
5432         struct iwl_priv *priv = dev_get_drvdata(d);
5433         struct ieee80211_measurement_params params = {
5434                 .channel = le16_to_cpu(priv->active_rxon.channel),
5435                 .start_time = cpu_to_le64(priv->last_tsf),
5436                 .duration = cpu_to_le16(1),
5437         };
5438         u8 type = IWL_MEASURE_BASIC;
5439         u8 buffer[32];
5440         u8 channel;
5441
5442         if (count) {
5443                 char *p = buffer;
5444                 strncpy(buffer, buf, min(sizeof(buffer), count));
5445                 channel = simple_strtoul(p, NULL, 0);
5446                 if (channel)
5447                         params.channel = channel;
5448
5449                 p = buffer;
5450                 while (*p && *p != ' ')
5451                         p++;
5452                 if (*p)
5453                         type = simple_strtoul(p + 1, NULL, 0);
5454         }
5455
5456         IWL_DEBUG_INFO("Invoking measurement of type %d on "
5457                        "channel %d (for '%s')\n", type, params.channel, buf);
5458         iwl4965_get_measurement(priv, &params, type);
5459
5460         return count;
5461 }
5462
5463 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5464                    show_measurement, store_measurement);
5465 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5466
5467 static ssize_t store_retry_rate(struct device *d,
5468                                 struct device_attribute *attr,
5469                                 const char *buf, size_t count)
5470 {
5471         struct iwl_priv *priv = dev_get_drvdata(d);
5472
5473         priv->retry_rate = simple_strtoul(buf, NULL, 0);
5474         if (priv->retry_rate <= 0)
5475                 priv->retry_rate = 1;
5476
5477         return count;
5478 }
5479
5480 static ssize_t show_retry_rate(struct device *d,
5481                                struct device_attribute *attr, char *buf)
5482 {
5483         struct iwl_priv *priv = dev_get_drvdata(d);
5484         return sprintf(buf, "%d", priv->retry_rate);
5485 }
5486
5487 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5488                    store_retry_rate);
5489
5490 static ssize_t store_power_level(struct device *d,
5491                                  struct device_attribute *attr,
5492                                  const char *buf, size_t count)
5493 {
5494         struct iwl_priv *priv = dev_get_drvdata(d);
5495         int rc;
5496         int mode;
5497
5498         mode = simple_strtoul(buf, NULL, 0);
5499         mutex_lock(&priv->mutex);
5500
5501         if (!iwl_is_ready(priv)) {
5502                 rc = -EAGAIN;
5503                 goto out;
5504         }
5505
5506         rc = iwl_power_set_user_mode(priv, mode);
5507         if (rc) {
5508                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5509                 goto out;
5510         }
5511         rc = count;
5512
5513  out:
5514         mutex_unlock(&priv->mutex);
5515         return rc;
5516 }
5517
5518 #define MAX_WX_STRING 80
5519
5520 /* Values are in microsecond */
5521 static const s32 timeout_duration[] = {
5522         350000,
5523         250000,
5524         75000,
5525         37000,
5526         25000,
5527 };
5528 static const s32 period_duration[] = {
5529         400000,
5530         700000,
5531         1000000,
5532         1000000,
5533         1000000
5534 };
5535
5536 static ssize_t show_power_level(struct device *d,
5537                                 struct device_attribute *attr, char *buf)
5538 {
5539         struct iwl_priv *priv = dev_get_drvdata(d);
5540         int level = priv->power_data.power_mode;
5541         char *p = buf;
5542
5543         p += sprintf(p, "%d ", level);
5544         switch (level) {
5545         case IWL_POWER_MODE_CAM:
5546         case IWL_POWER_AC:
5547                 p += sprintf(p, "(AC)");
5548                 break;
5549         case IWL_POWER_BATTERY:
5550                 p += sprintf(p, "(BATTERY)");
5551                 break;
5552         default:
5553                 p += sprintf(p,
5554                              "(Timeout %dms, Period %dms)",
5555                              timeout_duration[level - 1] / 1000,
5556                              period_duration[level - 1] / 1000);
5557         }
5558 /*
5559         if (!(priv->power_mode & IWL_POWER_ENABLED))
5560                 p += sprintf(p, " OFF\n");
5561         else
5562                 p += sprintf(p, " \n");
5563 */
5564         p += sprintf(p, " \n");
5565         return (p - buf + 1);
5566 }
5567
5568 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5569                    store_power_level);
5570
5571 static ssize_t show_channels(struct device *d,
5572                              struct device_attribute *attr, char *buf)
5573 {
5574         /* all this shit doesn't belong into sysfs anyway */
5575         return 0;
5576 }
5577
5578 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5579
5580 static ssize_t show_statistics(struct device *d,
5581                                struct device_attribute *attr, char *buf)
5582 {
5583         struct iwl_priv *priv = dev_get_drvdata(d);
5584         u32 size = sizeof(struct iwl4965_notif_statistics);
5585         u32 len = 0, ofs = 0;
5586         u8 *data = (u8 *) & priv->statistics;
5587         int rc = 0;
5588
5589         if (!iwl_is_alive(priv))
5590                 return -EAGAIN;
5591
5592         mutex_lock(&priv->mutex);
5593         rc = iwl_send_statistics_request(priv, 0);
5594         mutex_unlock(&priv->mutex);
5595
5596         if (rc) {
5597                 len = sprintf(buf,
5598                               "Error sending statistics request: 0x%08X\n", rc);
5599                 return len;
5600         }
5601
5602         while (size && (PAGE_SIZE - len)) {
5603                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5604                                    PAGE_SIZE - len, 1);
5605                 len = strlen(buf);
5606                 if (PAGE_SIZE - len)
5607                         buf[len++] = '\n';
5608
5609                 ofs += 16;
5610                 size -= min(size, 16U);
5611         }
5612
5613         return len;
5614 }
5615
5616 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5617
5618 static ssize_t show_status(struct device *d,
5619                            struct device_attribute *attr, char *buf)
5620 {
5621         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5622         if (!iwl_is_alive(priv))
5623                 return -EAGAIN;
5624         return sprintf(buf, "0x%08x\n", (int)priv->status);
5625 }
5626
5627 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5628
5629 static ssize_t dump_error_log(struct device *d,
5630                               struct device_attribute *attr,
5631                               const char *buf, size_t count)
5632 {
5633         char *p = (char *)buf;
5634
5635         if (p[0] == '1')
5636                 iwl4965_dump_nic_error_log((struct iwl_priv *)d->driver_data);
5637
5638         return strnlen(buf, count);
5639 }
5640
5641 static DEVICE_ATTR(dump_errors, S_IWUSR, NULL, dump_error_log);
5642
5643 static ssize_t dump_event_log(struct device *d,
5644                               struct device_attribute *attr,
5645                               const char *buf, size_t count)
5646 {
5647         char *p = (char *)buf;
5648
5649         if (p[0] == '1')
5650                 iwl4965_dump_nic_event_log((struct iwl_priv *)d->driver_data);
5651
5652         return strnlen(buf, count);
5653 }
5654
5655 static DEVICE_ATTR(dump_events, S_IWUSR, NULL, dump_event_log);
5656
5657 /*****************************************************************************
5658  *
5659  * driver setup and teardown
5660  *
5661  *****************************************************************************/
5662
5663 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5664 {
5665         priv->workqueue = create_workqueue(DRV_NAME);
5666
5667         init_waitqueue_head(&priv->wait_command_queue);
5668
5669         INIT_WORK(&priv->up, iwl4965_bg_up);
5670         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5671         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5672         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5673         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5674         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5675         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5676         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5677         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5678         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5679         INIT_DELAYED_WORK(&priv->init_alive_start, iwl4965_bg_init_alive_start);
5680         INIT_DELAYED_WORK(&priv->alive_start, iwl4965_bg_alive_start);
5681         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5682
5683         iwl4965_hw_setup_deferred_work(priv);
5684
5685         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5686                      iwl4965_irq_tasklet, (unsigned long)priv);
5687 }
5688
5689 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5690 {
5691         iwl4965_hw_cancel_deferred_work(priv);
5692
5693         cancel_delayed_work_sync(&priv->init_alive_start);
5694         cancel_delayed_work(&priv->scan_check);
5695         cancel_delayed_work(&priv->alive_start);
5696         cancel_delayed_work(&priv->post_associate);
5697         cancel_work_sync(&priv->beacon_update);
5698 }
5699
5700 static struct attribute *iwl4965_sysfs_entries[] = {
5701         &dev_attr_channels.attr,
5702         &dev_attr_dump_errors.attr,
5703         &dev_attr_dump_events.attr,
5704         &dev_attr_flags.attr,
5705         &dev_attr_filter_flags.attr,
5706 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5707         &dev_attr_measurement.attr,
5708 #endif
5709         &dev_attr_power_level.attr,
5710         &dev_attr_retry_rate.attr,
5711         &dev_attr_rs_window.attr,
5712         &dev_attr_statistics.attr,
5713         &dev_attr_status.attr,
5714         &dev_attr_temperature.attr,
5715         &dev_attr_tx_power.attr,
5716 #ifdef CONFIG_IWLWIFI_DEBUG
5717         &dev_attr_debug_level.attr,
5718 #endif
5719         &dev_attr_version.attr,
5720
5721         NULL
5722 };
5723
5724 static struct attribute_group iwl4965_attribute_group = {
5725         .name = NULL,           /* put in device directory */
5726         .attrs = iwl4965_sysfs_entries,
5727 };
5728
5729 static struct ieee80211_ops iwl4965_hw_ops = {
5730         .tx = iwl4965_mac_tx,
5731         .start = iwl4965_mac_start,
5732         .stop = iwl4965_mac_stop,
5733         .add_interface = iwl4965_mac_add_interface,
5734         .remove_interface = iwl4965_mac_remove_interface,
5735         .config = iwl4965_mac_config,
5736         .config_interface = iwl4965_mac_config_interface,
5737         .configure_filter = iwl4965_configure_filter,
5738         .set_key = iwl4965_mac_set_key,
5739         .update_tkip_key = iwl4965_mac_update_tkip_key,
5740         .get_stats = iwl4965_mac_get_stats,
5741         .get_tx_stats = iwl4965_mac_get_tx_stats,
5742         .conf_tx = iwl4965_mac_conf_tx,
5743         .get_tsf = iwl4965_mac_get_tsf,
5744         .reset_tsf = iwl4965_mac_reset_tsf,
5745         .beacon_update = iwl4965_mac_beacon_update,
5746         .bss_info_changed = iwl4965_bss_info_changed,
5747 #ifdef CONFIG_IWL4965_HT
5748         .ampdu_action = iwl4965_mac_ampdu_action,
5749 #endif  /* CONFIG_IWL4965_HT */
5750         .hw_scan = iwl4965_mac_hw_scan
5751 };
5752
5753 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5754 {
5755         int err = 0;
5756         struct iwl_priv *priv;
5757         struct ieee80211_hw *hw;
5758         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5759         unsigned long flags;
5760         DECLARE_MAC_BUF(mac);
5761
5762         /************************
5763          * 1. Allocating HW data
5764          ************************/
5765
5766         /* Disabling hardware scan means that mac80211 will perform scans
5767          * "the hard way", rather than using device's scan. */
5768         if (cfg->mod_params->disable_hw_scan) {
5769                 if (cfg->mod_params->debug & IWL_DL_INFO)
5770                         dev_printk(KERN_DEBUG, &(pdev->dev),
5771                                    "Disabling hw_scan\n");
5772                 iwl4965_hw_ops.hw_scan = NULL;
5773         }
5774
5775         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5776         if (!hw) {
5777                 err = -ENOMEM;
5778                 goto out;
5779         }
5780         priv = hw->priv;
5781         /* At this point both hw and priv are allocated. */
5782
5783         SET_IEEE80211_DEV(hw, &pdev->dev);
5784
5785         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5786         priv->cfg = cfg;
5787         priv->pci_dev = pdev;
5788
5789 #ifdef CONFIG_IWLWIFI_DEBUG
5790         priv->debug_level = priv->cfg->mod_params->debug;
5791         atomic_set(&priv->restrict_refcnt, 0);
5792 #endif
5793
5794         /**************************
5795          * 2. Initializing PCI bus
5796          **************************/
5797         if (pci_enable_device(pdev)) {
5798                 err = -ENODEV;
5799                 goto out_ieee80211_free_hw;
5800         }
5801
5802         pci_set_master(pdev);
5803
5804         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5805         if (!err)
5806                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5807         if (err) {
5808                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5809                 if (!err)
5810                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5811                 /* both attempts failed: */
5812                 if (err) {
5813                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5814                                 DRV_NAME);
5815                         goto out_pci_disable_device;
5816                 }
5817         }
5818
5819         err = pci_request_regions(pdev, DRV_NAME);
5820         if (err)
5821                 goto out_pci_disable_device;
5822
5823         pci_set_drvdata(pdev, priv);
5824
5825         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5826          * PCI Tx retries from interfering with C3 CPU state */
5827         pci_write_config_byte(pdev, 0x41, 0x00);
5828
5829         /***********************
5830          * 3. Read REV register
5831          ***********************/
5832         priv->hw_base = pci_iomap(pdev, 0, 0);
5833         if (!priv->hw_base) {
5834                 err = -ENODEV;
5835                 goto out_pci_release_regions;
5836         }
5837
5838         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5839                 (unsigned long long) pci_resource_len(pdev, 0));
5840         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5841
5842         iwl_hw_detect(priv);
5843         printk(KERN_INFO DRV_NAME
5844                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5845                 priv->cfg->name, priv->hw_rev);
5846
5847         /* amp init */
5848         err = priv->cfg->ops->lib->apm_ops.init(priv);
5849         if (err < 0) {
5850                 IWL_DEBUG_INFO("Failed to init APMG\n");
5851                 goto out_iounmap;
5852         }
5853         /*****************
5854          * 4. Read EEPROM
5855          *****************/
5856         /* Read the EEPROM */
5857         err = iwl_eeprom_init(priv);
5858         if (err) {
5859                 IWL_ERROR("Unable to init EEPROM\n");
5860                 goto out_iounmap;
5861         }
5862         err = iwl_eeprom_check_version(priv);
5863         if (err)
5864                 goto out_iounmap;
5865
5866         /* extract MAC Address */
5867         iwl_eeprom_get_mac(priv, priv->mac_addr);
5868         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5869         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5870
5871         /************************
5872          * 5. Setup HW constants
5873          ************************/
5874         /* Device-specific setup */
5875         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5876                 IWL_ERROR("failed to set hw parameters\n");
5877                 goto out_free_eeprom;
5878         }
5879
5880         /*******************
5881          * 6. Setup hw/priv
5882          *******************/
5883
5884         err = iwl_setup(priv);
5885         if (err)
5886                 goto out_free_eeprom;
5887         /* At this point both hw and priv are initialized. */
5888
5889         /**********************************
5890          * 7. Initialize module parameters
5891          **********************************/
5892
5893         /* Disable radio (SW RF KILL) via parameter when loading driver */
5894         if (priv->cfg->mod_params->disable) {
5895                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5896                 IWL_DEBUG_INFO("Radio disabled.\n");
5897         }
5898
5899         if (priv->cfg->mod_params->enable_qos)
5900                 priv->qos_data.qos_enable = 1;
5901
5902         /********************
5903          * 8. Setup services
5904          ********************/
5905         spin_lock_irqsave(&priv->lock, flags);
5906         iwl4965_disable_interrupts(priv);
5907         spin_unlock_irqrestore(&priv->lock, flags);
5908
5909         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5910         if (err) {
5911                 IWL_ERROR("failed to create sysfs device attributes\n");
5912                 goto out_free_eeprom;
5913         }
5914
5915         err = iwl_dbgfs_register(priv, DRV_NAME);
5916         if (err) {
5917                 IWL_ERROR("failed to create debugfs files\n");
5918                 goto out_remove_sysfs;
5919         }
5920
5921         iwl4965_setup_deferred_work(priv);
5922         iwl4965_setup_rx_handlers(priv);
5923
5924         /********************
5925          * 9. Conclude
5926          ********************/
5927         pci_save_state(pdev);
5928         pci_disable_device(pdev);
5929
5930         /* notify iwlcore to init */
5931         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5932         return 0;
5933
5934  out_remove_sysfs:
5935         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5936  out_free_eeprom:
5937         iwl_eeprom_free(priv);
5938  out_iounmap:
5939         pci_iounmap(pdev, priv->hw_base);
5940  out_pci_release_regions:
5941         pci_release_regions(pdev);
5942         pci_set_drvdata(pdev, NULL);
5943  out_pci_disable_device:
5944         pci_disable_device(pdev);
5945  out_ieee80211_free_hw:
5946         ieee80211_free_hw(priv->hw);
5947  out:
5948         return err;
5949 }
5950
5951 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5952 {
5953         struct iwl_priv *priv = pci_get_drvdata(pdev);
5954         struct list_head *p, *q;
5955         int i;
5956         unsigned long flags;
5957
5958         if (!priv)
5959                 return;
5960
5961         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5962
5963         if (priv->mac80211_registered) {
5964                 ieee80211_unregister_hw(priv->hw);
5965                 priv->mac80211_registered = 0;
5966         }
5967
5968         set_bit(STATUS_EXIT_PENDING, &priv->status);
5969
5970         iwl4965_down(priv);
5971
5972         /* make sure we flush any pending irq or
5973          * tasklet for the driver
5974          */
5975         spin_lock_irqsave(&priv->lock, flags);
5976         iwl4965_disable_interrupts(priv);
5977         spin_unlock_irqrestore(&priv->lock, flags);
5978
5979         iwl_synchronize_irq(priv);
5980
5981         /* Free MAC hash list for ADHOC */
5982         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5983                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5984                         list_del(p);
5985                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5986                 }
5987         }
5988
5989         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5990         iwl_dbgfs_unregister(priv);
5991         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5992
5993         iwl4965_dealloc_ucode_pci(priv);
5994
5995         if (priv->rxq.bd)
5996                 iwl_rx_queue_free(priv, &priv->rxq);
5997         iwl_hw_txq_ctx_free(priv);
5998
5999         iwlcore_clear_stations_table(priv);
6000         iwl_eeprom_free(priv);
6001
6002
6003         /*netif_stop_queue(dev); */
6004         flush_workqueue(priv->workqueue);
6005
6006         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
6007          * priv->workqueue... so we can't take down the workqueue
6008          * until now... */
6009         destroy_workqueue(priv->workqueue);
6010         priv->workqueue = NULL;
6011
6012         pci_iounmap(pdev, priv->hw_base);
6013         pci_release_regions(pdev);
6014         pci_disable_device(pdev);
6015         pci_set_drvdata(pdev, NULL);
6016
6017         iwl_free_channel_map(priv);
6018         iwlcore_free_geos(priv);
6019
6020         if (priv->ibss_beacon)
6021                 dev_kfree_skb(priv->ibss_beacon);
6022
6023         ieee80211_free_hw(priv->hw);
6024 }
6025
6026 #ifdef CONFIG_PM
6027
6028 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
6029 {
6030         struct iwl_priv *priv = pci_get_drvdata(pdev);
6031
6032         if (priv->is_open) {
6033                 set_bit(STATUS_IN_SUSPEND, &priv->status);
6034                 iwl4965_mac_stop(priv->hw);
6035                 priv->is_open = 1;
6036         }
6037
6038         pci_set_power_state(pdev, PCI_D3hot);
6039
6040         return 0;
6041 }
6042
6043 static int iwl4965_pci_resume(struct pci_dev *pdev)
6044 {
6045         struct iwl_priv *priv = pci_get_drvdata(pdev);
6046
6047         pci_set_power_state(pdev, PCI_D0);
6048
6049         if (priv->is_open)
6050                 iwl4965_mac_start(priv->hw);
6051
6052         clear_bit(STATUS_IN_SUSPEND, &priv->status);
6053         return 0;
6054 }
6055
6056 #endif /* CONFIG_PM */
6057
6058 /*****************************************************************************
6059  *
6060  * driver and module entry point
6061  *
6062  *****************************************************************************/
6063
6064 /* Hardware specific file defines the PCI IDs table for that hardware module */
6065 static struct pci_device_id iwl_hw_card_ids[] = {
6066         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
6067         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
6068 #ifdef CONFIG_IWL5000
6069         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
6070         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
6071         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
6072 #endif /* CONFIG_IWL5000 */
6073         {0}
6074 };
6075 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
6076
6077 static struct pci_driver iwl_driver = {
6078         .name = DRV_NAME,
6079         .id_table = iwl_hw_card_ids,
6080         .probe = iwl4965_pci_probe,
6081         .remove = __devexit_p(iwl4965_pci_remove),
6082 #ifdef CONFIG_PM
6083         .suspend = iwl4965_pci_suspend,
6084         .resume = iwl4965_pci_resume,
6085 #endif
6086 };
6087
6088 static int __init iwl4965_init(void)
6089 {
6090
6091         int ret;
6092         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
6093         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
6094
6095         ret = iwl4965_rate_control_register();
6096         if (ret) {
6097                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
6098                 return ret;
6099         }
6100
6101         ret = pci_register_driver(&iwl_driver);
6102         if (ret) {
6103                 IWL_ERROR("Unable to initialize PCI module\n");
6104                 goto error_register;
6105         }
6106
6107         return ret;
6108
6109 error_register:
6110         iwl4965_rate_control_unregister();
6111         return ret;
6112 }
6113
6114 static void __exit iwl4965_exit(void)
6115 {
6116         pci_unregister_driver(&iwl_driver);
6117         iwl4965_rate_control_unregister();
6118 }
6119
6120 module_exit(iwl4965_exit);
6121 module_init(iwl4965_init);