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         ieee80211_tx_status_irqsafe(priv->hw, tx_sta->skb[0]);
1610         tx_sta->skb[0] = NULL;
1611 }
1612
1613 /**
1614  * iwl4965_tx_queue_reclaim - Reclaim Tx queue entries already Tx'd
1615  *
1616  * When FW advances 'R' index, all entries between old and new 'R' index
1617  * need to be reclaimed. As result, some free space forms.  If there is
1618  * enough free space (> low mark), wake the stack that feeds us.
1619  */
1620 int iwl4965_tx_queue_reclaim(struct iwl_priv *priv, int txq_id, int index)
1621 {
1622         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1623         struct iwl_queue *q = &txq->q;
1624         int nfreed = 0;
1625
1626         if ((index >= q->n_bd) || (iwl_queue_used(q, index) == 0)) {
1627                 IWL_ERROR("Read index for DMA queue txq id (%d), index %d, "
1628                           "is out of range [0-%d] %d %d.\n", txq_id,
1629                           index, q->n_bd, q->write_ptr, q->read_ptr);
1630                 return 0;
1631         }
1632
1633         for (index = iwl_queue_inc_wrap(index, q->n_bd);
1634                 q->read_ptr != index;
1635                 q->read_ptr = iwl_queue_inc_wrap(q->read_ptr, q->n_bd)) {
1636                 if (txq_id != IWL_CMD_QUEUE_NUM) {
1637                         iwl4965_txstatus_to_ieee(priv,
1638                                         &(txq->txb[txq->q.read_ptr]));
1639                         iwl_hw_txq_free_tfd(priv, txq);
1640                 } else if (nfreed > 1) {
1641                         IWL_ERROR("HCMD skipped: index (%d) %d %d\n", index,
1642                                         q->write_ptr, q->read_ptr);
1643                         queue_work(priv->workqueue, &priv->restart);
1644                 }
1645                 nfreed++;
1646         }
1647
1648         return nfreed;
1649 }
1650
1651 static int iwl4965_is_tx_success(u32 status)
1652 {
1653         status &= TX_STATUS_MSK;
1654         return (status == TX_STATUS_SUCCESS)
1655             || (status == TX_STATUS_DIRECT_DONE);
1656 }
1657
1658 /******************************************************************************
1659  *
1660  * Generic RX handler implementations
1661  *
1662  ******************************************************************************/
1663 #ifdef CONFIG_IWL4965_HT
1664
1665 static inline int iwl4965_get_ra_sta_id(struct iwl_priv *priv,
1666                                     struct ieee80211_hdr *hdr)
1667 {
1668         if (priv->iw_mode == IEEE80211_IF_TYPE_STA)
1669                 return IWL_AP_ID;
1670         else {
1671                 u8 *da = ieee80211_get_DA(hdr);
1672                 return iwl_find_station(priv, da);
1673         }
1674 }
1675
1676 static struct ieee80211_hdr *iwl4965_tx_queue_get_hdr(
1677         struct iwl_priv *priv, int txq_id, int idx)
1678 {
1679         if (priv->txq[txq_id].txb[idx].skb[0])
1680                 return (struct ieee80211_hdr *)priv->txq[txq_id].
1681                                 txb[idx].skb[0]->data;
1682         return NULL;
1683 }
1684
1685 static inline u32 iwl4965_get_scd_ssn(struct iwl4965_tx_resp *tx_resp)
1686 {
1687         __le32 *scd_ssn = (__le32 *)((u32 *)&tx_resp->status +
1688                                 tx_resp->frame_count);
1689         return le32_to_cpu(*scd_ssn) & MAX_SN;
1690
1691 }
1692
1693 /**
1694  * iwl4965_tx_status_reply_tx - Handle Tx rspnse for frames in aggregation queue
1695  */
1696 static int iwl4965_tx_status_reply_tx(struct iwl_priv *priv,
1697                                       struct iwl_ht_agg *agg,
1698                                       struct iwl4965_tx_resp_agg *tx_resp,
1699                                       u16 start_idx)
1700 {
1701         u16 status;
1702         struct agg_tx_status *frame_status = &tx_resp->status;
1703         struct ieee80211_tx_info *info = NULL;
1704         struct ieee80211_hdr *hdr = NULL;
1705         int i, sh;
1706         int txq_id, idx;
1707         u16 seq;
1708
1709         if (agg->wait_for_ba)
1710                 IWL_DEBUG_TX_REPLY("got tx response w/o block-ack\n");
1711
1712         agg->frame_count = tx_resp->frame_count;
1713         agg->start_idx = start_idx;
1714         agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1715         agg->bitmap = 0;
1716
1717         /* # frames attempted by Tx command */
1718         if (agg->frame_count == 1) {
1719                 /* Only one frame was attempted; no block-ack will arrive */
1720                 status = le16_to_cpu(frame_status[0].status);
1721                 seq  = le16_to_cpu(frame_status[0].sequence);
1722                 idx = SEQ_TO_INDEX(seq);
1723                 txq_id = SEQ_TO_QUEUE(seq);
1724
1725                 /* FIXME: code repetition */
1726                 IWL_DEBUG_TX_REPLY("FrameCnt = %d, StartIdx=%d idx=%d\n",
1727                                    agg->frame_count, agg->start_idx, idx);
1728
1729                 info = IEEE80211_SKB_CB(priv->txq[txq_id].txb[idx].skb[0]);
1730                 info->status.retry_count = tx_resp->failure_frame;
1731                 info->flags &= ~IEEE80211_TX_CTL_AMPDU;
1732                 info->flags |= iwl4965_is_tx_success(status)?
1733                         IEEE80211_TX_STAT_ACK : 0;
1734                 iwl4965_hwrate_to_tx_control(priv,
1735                                              le32_to_cpu(tx_resp->rate_n_flags),
1736                                              info);
1737                 /* FIXME: code repetition end */
1738
1739                 IWL_DEBUG_TX_REPLY("1 Frame 0x%x failure :%d\n",
1740                                     status & 0xff, tx_resp->failure_frame);
1741                 IWL_DEBUG_TX_REPLY("Rate Info rate_n_flags=%x\n",
1742                                 iwl4965_hw_get_rate_n_flags(tx_resp->rate_n_flags));
1743
1744                 agg->wait_for_ba = 0;
1745         } else {
1746                 /* Two or more frames were attempted; expect block-ack */
1747                 u64 bitmap = 0;
1748                 int start = agg->start_idx;
1749
1750                 /* Construct bit-map of pending frames within Tx window */
1751                 for (i = 0; i < agg->frame_count; i++) {
1752                         u16 sc;
1753                         status = le16_to_cpu(frame_status[i].status);
1754                         seq  = le16_to_cpu(frame_status[i].sequence);
1755                         idx = SEQ_TO_INDEX(seq);
1756                         txq_id = SEQ_TO_QUEUE(seq);
1757
1758                         if (status & (AGG_TX_STATE_FEW_BYTES_MSK |
1759                                       AGG_TX_STATE_ABORT_MSK))
1760                                 continue;
1761
1762                         IWL_DEBUG_TX_REPLY("FrameCnt = %d, txq_id=%d idx=%d\n",
1763                                            agg->frame_count, txq_id, idx);
1764
1765                         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, idx);
1766
1767                         sc = le16_to_cpu(hdr->seq_ctrl);
1768                         if (idx != (SEQ_TO_SN(sc) & 0xff)) {
1769                                 IWL_ERROR("BUG_ON idx doesn't match seq control"
1770                                           " idx=%d, seq_idx=%d, seq=%d\n",
1771                                           idx, SEQ_TO_SN(sc),
1772                                           hdr->seq_ctrl);
1773                                 return -1;
1774                         }
1775
1776                         IWL_DEBUG_TX_REPLY("AGG Frame i=%d idx %d seq=%d\n",
1777                                            i, idx, SEQ_TO_SN(sc));
1778
1779                         sh = idx - start;
1780                         if (sh > 64) {
1781                                 sh = (start - idx) + 0xff;
1782                                 bitmap = bitmap << sh;
1783                                 sh = 0;
1784                                 start = idx;
1785                         } else if (sh < -64)
1786                                 sh  = 0xff - (start - idx);
1787                         else if (sh < 0) {
1788                                 sh = start - idx;
1789                                 start = idx;
1790                                 bitmap = bitmap << sh;
1791                                 sh = 0;
1792                         }
1793                         bitmap |= (1 << sh);
1794                         IWL_DEBUG_TX_REPLY("start=%d bitmap=0x%x\n",
1795                                            start, (u32)(bitmap & 0xFFFFFFFF));
1796                 }
1797
1798                 agg->bitmap = bitmap;
1799                 agg->start_idx = start;
1800                 agg->rate_n_flags = le32_to_cpu(tx_resp->rate_n_flags);
1801                 IWL_DEBUG_TX_REPLY("Frames %d start_idx=%d bitmap=0x%llx\n",
1802                                    agg->frame_count, agg->start_idx,
1803                                    (unsigned long long)agg->bitmap);
1804
1805                 if (bitmap)
1806                         agg->wait_for_ba = 1;
1807         }
1808         return 0;
1809 }
1810 #endif
1811
1812 /**
1813  * iwl4965_rx_reply_tx - Handle standard (non-aggregation) Tx response
1814  */
1815 static void iwl4965_rx_reply_tx(struct iwl_priv *priv,
1816                                 struct iwl_rx_mem_buffer *rxb)
1817 {
1818         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1819         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
1820         int txq_id = SEQ_TO_QUEUE(sequence);
1821         int index = SEQ_TO_INDEX(sequence);
1822         struct iwl_tx_queue *txq = &priv->txq[txq_id];
1823         struct ieee80211_tx_info *info;
1824         struct iwl4965_tx_resp *tx_resp = (void *)&pkt->u.raw[0];
1825         u32  status = le32_to_cpu(tx_resp->status);
1826 #ifdef CONFIG_IWL4965_HT
1827         int tid = MAX_TID_COUNT, sta_id = IWL_INVALID_STATION;
1828         u16 fc;
1829         struct ieee80211_hdr *hdr;
1830         u8 *qc = NULL;
1831 #endif
1832
1833         if ((index >= txq->q.n_bd) || (iwl_queue_used(&txq->q, index) == 0)) {
1834                 IWL_ERROR("Read index for DMA queue txq_id (%d) index %d "
1835                           "is out of range [0-%d] %d %d\n", txq_id,
1836                           index, txq->q.n_bd, txq->q.write_ptr,
1837                           txq->q.read_ptr);
1838                 return;
1839         }
1840
1841         info = IEEE80211_SKB_CB(txq->txb[txq->q.read_ptr].skb[0]);
1842         memset(&info->status, 0, sizeof(info->status));
1843
1844 #ifdef CONFIG_IWL4965_HT
1845         hdr = iwl4965_tx_queue_get_hdr(priv, txq_id, index);
1846         fc = le16_to_cpu(hdr->frame_control);
1847         if (ieee80211_is_qos_data(fc)) {
1848                 qc = ieee80211_get_qos_ctrl(hdr, ieee80211_get_hdrlen(fc));
1849                 tid = qc[0] & 0xf;
1850         }
1851
1852         sta_id = iwl4965_get_ra_sta_id(priv, hdr);
1853         if (txq->sched_retry && unlikely(sta_id == IWL_INVALID_STATION)) {
1854                 IWL_ERROR("Station not known\n");
1855                 return;
1856         }
1857
1858         if (txq->sched_retry) {
1859                 const u32 scd_ssn = iwl4965_get_scd_ssn(tx_resp);
1860                 struct iwl_ht_agg *agg = NULL;
1861
1862                 if (!qc)
1863                         return;
1864
1865                 agg = &priv->stations[sta_id].tid[tid].agg;
1866
1867                 iwl4965_tx_status_reply_tx(priv, agg,
1868                                 (struct iwl4965_tx_resp_agg *)tx_resp, index);
1869
1870                 if ((tx_resp->frame_count == 1) &&
1871                     !iwl4965_is_tx_success(status)) {
1872                         /* TODO: send BAR */
1873                 }
1874
1875                 if (txq->q.read_ptr != (scd_ssn & 0xff)) {
1876                         int freed, ampdu_q;
1877                         index = iwl_queue_dec_wrap(scd_ssn & 0xff, txq->q.n_bd);
1878                         IWL_DEBUG_TX_REPLY("Retry scheduler reclaim scd_ssn "
1879                                            "%d index %d\n", scd_ssn , index);
1880                         freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1881                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1882
1883                         if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1884                             txq_id >= 0 && priv->mac80211_registered &&
1885                             agg->state != IWL_EMPTYING_HW_QUEUE_DELBA) {
1886                                 /* calculate mac80211 ampdu sw queue to wake */
1887                                 ampdu_q = txq_id - IWL_BACK_QUEUE_FIRST_ID +
1888                                           priv->hw->queues;
1889                                 if (agg->state == IWL_AGG_OFF)
1890                                         ieee80211_wake_queue(priv->hw, txq_id);
1891                                 else
1892                                         ieee80211_wake_queue(priv->hw, ampdu_q);
1893                         }
1894                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1895                 }
1896         } else {
1897 #endif /* CONFIG_IWL4965_HT */
1898
1899         info->status.retry_count = tx_resp->failure_frame;
1900         info->flags |=
1901             iwl4965_is_tx_success(status) ? IEEE80211_TX_STAT_ACK : 0;
1902         iwl4965_hwrate_to_tx_control(priv, le32_to_cpu(tx_resp->rate_n_flags),
1903                                      info);
1904
1905         IWL_DEBUG_TX("Tx queue %d Status %s (0x%08x) rate_n_flags 0x%x "
1906                      "retries %d\n", txq_id, iwl4965_get_tx_fail_reason(status),
1907                      status, le32_to_cpu(tx_resp->rate_n_flags),
1908                      tx_resp->failure_frame);
1909
1910         IWL_DEBUG_TX_REPLY("Tx queue reclaim %d\n", index);
1911 #ifdef CONFIG_IWL4965_HT
1912         if (index != -1) {
1913                 int freed = iwl4965_tx_queue_reclaim(priv, txq_id, index);
1914                 if (tid != MAX_TID_COUNT)
1915                         priv->stations[sta_id].tid[tid].tfds_in_queue -= freed;
1916                 if (iwl_queue_space(&txq->q) > txq->q.low_mark &&
1917                         (txq_id >= 0) && priv->mac80211_registered)
1918                         ieee80211_wake_queue(priv->hw, txq_id);
1919                 if (tid != MAX_TID_COUNT)
1920                         iwl4965_check_empty_hw_queue(priv, sta_id, tid, txq_id);
1921         }
1922         }
1923 #endif /* CONFIG_IWL4965_HT */
1924
1925         if (iwl_check_bits(status, TX_ABORT_REQUIRED_MSK))
1926                 IWL_ERROR("TODO:  Implement Tx ABORT REQUIRED!!!\n");
1927 }
1928
1929
1930 static void iwl_rx_reply_alive(struct iwl_priv *priv,
1931                                 struct iwl_rx_mem_buffer *rxb)
1932 {
1933         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1934         struct iwl_alive_resp *palive;
1935         struct delayed_work *pwork;
1936
1937         palive = &pkt->u.alive_frame;
1938
1939         IWL_DEBUG_INFO("Alive ucode status 0x%08X revision "
1940                        "0x%01X 0x%01X\n",
1941                        palive->is_valid, palive->ver_type,
1942                        palive->ver_subtype);
1943
1944         if (palive->ver_subtype == INITIALIZE_SUBTYPE) {
1945                 IWL_DEBUG_INFO("Initialization Alive received.\n");
1946                 memcpy(&priv->card_alive_init,
1947                        &pkt->u.alive_frame,
1948                        sizeof(struct iwl_init_alive_resp));
1949                 pwork = &priv->init_alive_start;
1950         } else {
1951                 IWL_DEBUG_INFO("Runtime Alive received.\n");
1952                 memcpy(&priv->card_alive, &pkt->u.alive_frame,
1953                        sizeof(struct iwl_alive_resp));
1954                 pwork = &priv->alive_start;
1955         }
1956
1957         /* We delay the ALIVE response by 5ms to
1958          * give the HW RF Kill time to activate... */
1959         if (palive->is_valid == UCODE_VALID_OK)
1960                 queue_delayed_work(priv->workqueue, pwork,
1961                                    msecs_to_jiffies(5));
1962         else
1963                 IWL_WARNING("uCode did not respond OK.\n");
1964 }
1965
1966 static void iwl4965_rx_reply_add_sta(struct iwl_priv *priv,
1967                                      struct iwl_rx_mem_buffer *rxb)
1968 {
1969         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1970
1971         IWL_DEBUG_RX("Received REPLY_ADD_STA: 0x%02X\n", pkt->u.status);
1972         return;
1973 }
1974
1975 static void iwl4965_rx_reply_error(struct iwl_priv *priv,
1976                                    struct iwl_rx_mem_buffer *rxb)
1977 {
1978         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1979
1980         IWL_ERROR("Error Reply type 0x%08X cmd %s (0x%02X) "
1981                 "seq 0x%04X ser 0x%08X\n",
1982                 le32_to_cpu(pkt->u.err_resp.error_type),
1983                 get_cmd_string(pkt->u.err_resp.cmd_id),
1984                 pkt->u.err_resp.cmd_id,
1985                 le16_to_cpu(pkt->u.err_resp.bad_cmd_seq_num),
1986                 le32_to_cpu(pkt->u.err_resp.error_info));
1987 }
1988
1989 #define TX_STATUS_ENTRY(x) case TX_STATUS_FAIL_ ## x: return #x
1990
1991 static void iwl4965_rx_csa(struct iwl_priv *priv, struct iwl_rx_mem_buffer *rxb)
1992 {
1993         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
1994         struct iwl_rxon_cmd *rxon = (void *)&priv->active_rxon;
1995         struct iwl4965_csa_notification *csa = &(pkt->u.csa_notif);
1996         IWL_DEBUG_11H("CSA notif: channel %d, status %d\n",
1997                       le16_to_cpu(csa->channel), le32_to_cpu(csa->status));
1998         rxon->channel = csa->channel;
1999         priv->staging_rxon.channel = csa->channel;
2000 }
2001
2002 static void iwl4965_rx_spectrum_measure_notif(struct iwl_priv *priv,
2003                                           struct iwl_rx_mem_buffer *rxb)
2004 {
2005 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
2006         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2007         struct iwl4965_spectrum_notification *report = &(pkt->u.spectrum_notif);
2008
2009         if (!report->state) {
2010                 IWL_DEBUG(IWL_DL_11H,
2011                         "Spectrum Measure Notification: Start\n");
2012                 return;
2013         }
2014
2015         memcpy(&priv->measure_report, report, sizeof(*report));
2016         priv->measurement_status |= MEASUREMENT_READY;
2017 #endif
2018 }
2019
2020 static void iwl4965_rx_pm_sleep_notif(struct iwl_priv *priv,
2021                                       struct iwl_rx_mem_buffer *rxb)
2022 {
2023 #ifdef CONFIG_IWLWIFI_DEBUG
2024         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2025         struct iwl4965_sleep_notification *sleep = &(pkt->u.sleep_notif);
2026         IWL_DEBUG_RX("sleep mode: %d, src: %d\n",
2027                      sleep->pm_sleep_mode, sleep->pm_wakeup_src);
2028 #endif
2029 }
2030
2031 static void iwl4965_rx_pm_debug_statistics_notif(struct iwl_priv *priv,
2032                                              struct iwl_rx_mem_buffer *rxb)
2033 {
2034         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2035         IWL_DEBUG_RADIO("Dumping %d bytes of unhandled "
2036                         "notification for %s:\n",
2037                         le32_to_cpu(pkt->len), get_cmd_string(pkt->hdr.cmd));
2038         iwl_print_hex_dump(priv, IWL_DL_RADIO, pkt->u.raw, le32_to_cpu(pkt->len));
2039 }
2040
2041 static void iwl4965_bg_beacon_update(struct work_struct *work)
2042 {
2043         struct iwl_priv *priv =
2044                 container_of(work, struct iwl_priv, beacon_update);
2045         struct sk_buff *beacon;
2046
2047         /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
2048         beacon = ieee80211_beacon_get(priv->hw, priv->vif);
2049
2050         if (!beacon) {
2051                 IWL_ERROR("update beacon failed\n");
2052                 return;
2053         }
2054
2055         mutex_lock(&priv->mutex);
2056         /* new beacon skb is allocated every time; dispose previous.*/
2057         if (priv->ibss_beacon)
2058                 dev_kfree_skb(priv->ibss_beacon);
2059
2060         priv->ibss_beacon = beacon;
2061         mutex_unlock(&priv->mutex);
2062
2063         iwl4965_send_beacon_cmd(priv);
2064 }
2065
2066 static void iwl4965_rx_beacon_notif(struct iwl_priv *priv,
2067                                 struct iwl_rx_mem_buffer *rxb)
2068 {
2069 #ifdef CONFIG_IWLWIFI_DEBUG
2070         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2071         struct iwl4965_beacon_notif *beacon = &(pkt->u.beacon_status);
2072         u8 rate = iwl4965_hw_get_rate(beacon->beacon_notify_hdr.rate_n_flags);
2073
2074         IWL_DEBUG_RX("beacon status %x retries %d iss %d "
2075                 "tsf %d %d rate %d\n",
2076                 le32_to_cpu(beacon->beacon_notify_hdr.status) & TX_STATUS_MSK,
2077                 beacon->beacon_notify_hdr.failure_frame,
2078                 le32_to_cpu(beacon->ibss_mgr_status),
2079                 le32_to_cpu(beacon->high_tsf),
2080                 le32_to_cpu(beacon->low_tsf), rate);
2081 #endif
2082
2083         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
2084             (!test_bit(STATUS_EXIT_PENDING, &priv->status)))
2085                 queue_work(priv->workqueue, &priv->beacon_update);
2086 }
2087
2088 /* Service response to REPLY_SCAN_CMD (0x80) */
2089 static void iwl4965_rx_reply_scan(struct iwl_priv *priv,
2090                               struct iwl_rx_mem_buffer *rxb)
2091 {
2092 #ifdef CONFIG_IWLWIFI_DEBUG
2093         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2094         struct iwl4965_scanreq_notification *notif =
2095             (struct iwl4965_scanreq_notification *)pkt->u.raw;
2096
2097         IWL_DEBUG_RX("Scan request status = 0x%x\n", notif->status);
2098 #endif
2099 }
2100
2101 /* Service SCAN_START_NOTIFICATION (0x82) */
2102 static void iwl4965_rx_scan_start_notif(struct iwl_priv *priv,
2103                                     struct iwl_rx_mem_buffer *rxb)
2104 {
2105         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2106         struct iwl4965_scanstart_notification *notif =
2107             (struct iwl4965_scanstart_notification *)pkt->u.raw;
2108         priv->scan_start_tsf = le32_to_cpu(notif->tsf_low);
2109         IWL_DEBUG_SCAN("Scan start: "
2110                        "%d [802.11%s] "
2111                        "(TSF: 0x%08X:%08X) - %d (beacon timer %u)\n",
2112                        notif->channel,
2113                        notif->band ? "bg" : "a",
2114                        notif->tsf_high,
2115                        notif->tsf_low, notif->status, notif->beacon_timer);
2116 }
2117
2118 /* Service SCAN_RESULTS_NOTIFICATION (0x83) */
2119 static void iwl4965_rx_scan_results_notif(struct iwl_priv *priv,
2120                                       struct iwl_rx_mem_buffer *rxb)
2121 {
2122         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2123         struct iwl4965_scanresults_notification *notif =
2124             (struct iwl4965_scanresults_notification *)pkt->u.raw;
2125
2126         IWL_DEBUG_SCAN("Scan ch.res: "
2127                        "%d [802.11%s] "
2128                        "(TSF: 0x%08X:%08X) - %d "
2129                        "elapsed=%lu usec (%dms since last)\n",
2130                        notif->channel,
2131                        notif->band ? "bg" : "a",
2132                        le32_to_cpu(notif->tsf_high),
2133                        le32_to_cpu(notif->tsf_low),
2134                        le32_to_cpu(notif->statistics[0]),
2135                        le32_to_cpu(notif->tsf_low) - priv->scan_start_tsf,
2136                        jiffies_to_msecs(elapsed_jiffies
2137                                         (priv->last_scan_jiffies, jiffies)));
2138
2139         priv->last_scan_jiffies = jiffies;
2140         priv->next_scan_jiffies = 0;
2141 }
2142
2143 /* Service SCAN_COMPLETE_NOTIFICATION (0x84) */
2144 static void iwl4965_rx_scan_complete_notif(struct iwl_priv *priv,
2145                                        struct iwl_rx_mem_buffer *rxb)
2146 {
2147         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2148         struct iwl4965_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
2149
2150         IWL_DEBUG_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) - %d\n",
2151                        scan_notif->scanned_channels,
2152                        scan_notif->tsf_low,
2153                        scan_notif->tsf_high, scan_notif->status);
2154
2155         /* The HW is no longer scanning */
2156         clear_bit(STATUS_SCAN_HW, &priv->status);
2157
2158         /* The scan completion notification came in, so kill that timer... */
2159         cancel_delayed_work(&priv->scan_check);
2160
2161         IWL_DEBUG_INFO("Scan pass on %sGHz took %dms\n",
2162                        (priv->scan_bands == 2) ? "2.4" : "5.2",
2163                        jiffies_to_msecs(elapsed_jiffies
2164                                         (priv->scan_pass_start, jiffies)));
2165
2166         /* Remove this scanned band from the list
2167          * of pending bands to scan */
2168         priv->scan_bands--;
2169
2170         /* If a request to abort was given, or the scan did not succeed
2171          * then we reset the scan state machine and terminate,
2172          * re-queuing another scan if one has been requested */
2173         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
2174                 IWL_DEBUG_INFO("Aborted scan completed.\n");
2175                 clear_bit(STATUS_SCAN_ABORTING, &priv->status);
2176         } else {
2177                 /* If there are more bands on this scan pass reschedule */
2178                 if (priv->scan_bands > 0)
2179                         goto reschedule;
2180         }
2181
2182         priv->last_scan_jiffies = jiffies;
2183         priv->next_scan_jiffies = 0;
2184         IWL_DEBUG_INFO("Setting scan to off\n");
2185
2186         clear_bit(STATUS_SCANNING, &priv->status);
2187
2188         IWL_DEBUG_INFO("Scan took %dms\n",
2189                 jiffies_to_msecs(elapsed_jiffies(priv->scan_start, jiffies)));
2190
2191         queue_work(priv->workqueue, &priv->scan_completed);
2192
2193         return;
2194
2195 reschedule:
2196         priv->scan_pass_start = jiffies;
2197         queue_work(priv->workqueue, &priv->request_scan);
2198 }
2199
2200 /* Handle notification from uCode that card's power state is changing
2201  * due to software, hardware, or critical temperature RFKILL */
2202 static void iwl4965_rx_card_state_notif(struct iwl_priv *priv,
2203                                     struct iwl_rx_mem_buffer *rxb)
2204 {
2205         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2206         u32 flags = le32_to_cpu(pkt->u.card_state_notif.flags);
2207         unsigned long status = priv->status;
2208
2209         IWL_DEBUG_RF_KILL("Card state received: HW:%s SW:%s\n",
2210                           (flags & HW_CARD_DISABLED) ? "Kill" : "On",
2211                           (flags & SW_CARD_DISABLED) ? "Kill" : "On");
2212
2213         if (flags & (SW_CARD_DISABLED | HW_CARD_DISABLED |
2214                      RF_CARD_DISABLED)) {
2215
2216                 iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2217                             CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2218
2219                 if (!iwl_grab_nic_access(priv)) {
2220                         iwl_write_direct32(
2221                                 priv, HBUS_TARG_MBX_C,
2222                                 HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2223
2224                         iwl_release_nic_access(priv);
2225                 }
2226
2227                 if (!(flags & RXON_CARD_DISABLED)) {
2228                         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
2229                                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
2230                         if (!iwl_grab_nic_access(priv)) {
2231                                 iwl_write_direct32(
2232                                         priv, HBUS_TARG_MBX_C,
2233                                         HBUS_TARG_MBX_C_REG_BIT_CMD_BLOCKED);
2234
2235                                 iwl_release_nic_access(priv);
2236                         }
2237                 }
2238
2239                 if (flags & RF_CARD_DISABLED) {
2240                         iwl_write32(priv, CSR_UCODE_DRV_GP1_SET,
2241                                     CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
2242                         iwl_read32(priv, CSR_UCODE_DRV_GP1);
2243                         if (!iwl_grab_nic_access(priv))
2244                                 iwl_release_nic_access(priv);
2245                 }
2246         }
2247
2248         if (flags & HW_CARD_DISABLED)
2249                 set_bit(STATUS_RF_KILL_HW, &priv->status);
2250         else
2251                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
2252
2253
2254         if (flags & SW_CARD_DISABLED)
2255                 set_bit(STATUS_RF_KILL_SW, &priv->status);
2256         else
2257                 clear_bit(STATUS_RF_KILL_SW, &priv->status);
2258
2259         if (!(flags & RXON_CARD_DISABLED))
2260                 iwl4965_scan_cancel(priv);
2261
2262         if ((test_bit(STATUS_RF_KILL_HW, &status) !=
2263              test_bit(STATUS_RF_KILL_HW, &priv->status)) ||
2264             (test_bit(STATUS_RF_KILL_SW, &status) !=
2265              test_bit(STATUS_RF_KILL_SW, &priv->status)))
2266                 queue_work(priv->workqueue, &priv->rf_kill);
2267         else
2268                 wake_up_interruptible(&priv->wait_command_queue);
2269 }
2270
2271 /**
2272  * iwl4965_setup_rx_handlers - Initialize Rx handler callbacks
2273  *
2274  * Setup the RX handlers for each of the reply types sent from the uCode
2275  * to the host.
2276  *
2277  * This function chains into the hardware specific files for them to setup
2278  * any hardware specific handlers as well.
2279  */
2280 static void iwl4965_setup_rx_handlers(struct iwl_priv *priv)
2281 {
2282         priv->rx_handlers[REPLY_ALIVE] = iwl_rx_reply_alive;
2283         priv->rx_handlers[REPLY_ADD_STA] = iwl4965_rx_reply_add_sta;
2284         priv->rx_handlers[REPLY_ERROR] = iwl4965_rx_reply_error;
2285         priv->rx_handlers[CHANNEL_SWITCH_NOTIFICATION] = iwl4965_rx_csa;
2286         priv->rx_handlers[SPECTRUM_MEASURE_NOTIFICATION] =
2287             iwl4965_rx_spectrum_measure_notif;
2288         priv->rx_handlers[PM_SLEEP_NOTIFICATION] = iwl4965_rx_pm_sleep_notif;
2289         priv->rx_handlers[PM_DEBUG_STATISTIC_NOTIFIC] =
2290             iwl4965_rx_pm_debug_statistics_notif;
2291         priv->rx_handlers[BEACON_NOTIFICATION] = iwl4965_rx_beacon_notif;
2292
2293         /*
2294          * The same handler is used for both the REPLY to a discrete
2295          * statistics request from the host as well as for the periodic
2296          * statistics notifications (after received beacons) from the uCode.
2297          */
2298         priv->rx_handlers[REPLY_STATISTICS_CMD] = iwl4965_hw_rx_statistics;
2299         priv->rx_handlers[STATISTICS_NOTIFICATION] = iwl4965_hw_rx_statistics;
2300
2301         priv->rx_handlers[REPLY_SCAN_CMD] = iwl4965_rx_reply_scan;
2302         priv->rx_handlers[SCAN_START_NOTIFICATION] = iwl4965_rx_scan_start_notif;
2303         priv->rx_handlers[SCAN_RESULTS_NOTIFICATION] =
2304             iwl4965_rx_scan_results_notif;
2305         priv->rx_handlers[SCAN_COMPLETE_NOTIFICATION] =
2306             iwl4965_rx_scan_complete_notif;
2307         priv->rx_handlers[CARD_STATE_NOTIFICATION] = iwl4965_rx_card_state_notif;
2308         priv->rx_handlers[REPLY_TX] = iwl4965_rx_reply_tx;
2309
2310         /* Set up hardware specific Rx handlers */
2311         priv->cfg->ops->lib->rx_handler_setup(priv);
2312 }
2313
2314 /**
2315  * iwl4965_tx_cmd_complete - Pull unused buffers off the queue and reclaim them
2316  * @rxb: Rx buffer to reclaim
2317  *
2318  * If an Rx buffer has an async callback associated with it the callback
2319  * will be executed.  The attached skb (if present) will only be freed
2320  * if the callback returns 1
2321  */
2322 static void iwl4965_tx_cmd_complete(struct iwl_priv *priv,
2323                                     struct iwl_rx_mem_buffer *rxb)
2324 {
2325         struct iwl_rx_packet *pkt = (struct iwl_rx_packet *)rxb->skb->data;
2326         u16 sequence = le16_to_cpu(pkt->hdr.sequence);
2327         int txq_id = SEQ_TO_QUEUE(sequence);
2328         int index = SEQ_TO_INDEX(sequence);
2329         int huge = sequence & SEQ_HUGE_FRAME;
2330         int cmd_index;
2331         struct iwl_cmd *cmd;
2332
2333         /* If a Tx command is being handled and it isn't in the actual
2334          * command queue then there a command routing bug has been introduced
2335          * in the queue management code. */
2336         if (txq_id != IWL_CMD_QUEUE_NUM)
2337                 IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
2338                           txq_id, pkt->hdr.cmd);
2339         BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
2340
2341         cmd_index = get_cmd_index(&priv->txq[IWL_CMD_QUEUE_NUM].q, index, huge);
2342         cmd = &priv->txq[IWL_CMD_QUEUE_NUM].cmd[cmd_index];
2343
2344         /* Input error checking is done when commands are added to queue. */
2345         if (cmd->meta.flags & CMD_WANT_SKB) {
2346                 cmd->meta.source->u.skb = rxb->skb;
2347                 rxb->skb = NULL;
2348         } else if (cmd->meta.u.callback &&
2349                    !cmd->meta.u.callback(priv, cmd, rxb->skb))
2350                 rxb->skb = NULL;
2351
2352         iwl4965_tx_queue_reclaim(priv, txq_id, index);
2353
2354         if (!(cmd->meta.flags & CMD_ASYNC)) {
2355                 clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2356                 wake_up_interruptible(&priv->wait_command_queue);
2357         }
2358 }
2359
2360 /*
2361  * this should be called while priv->lock is locked
2362 */
2363 static void __iwl_rx_replenish(struct iwl_priv *priv)
2364 {
2365         iwl_rx_allocate(priv);
2366         iwl_rx_queue_restock(priv);
2367 }
2368
2369
2370 /**
2371  * iwl_rx_handle - Main entry function for receiving responses from uCode
2372  *
2373  * Uses the priv->rx_handlers callback function array to invoke
2374  * the appropriate handlers, including command responses,
2375  * frame-received notifications, and other notifications.
2376  */
2377 void iwl_rx_handle(struct iwl_priv *priv)
2378 {
2379         struct iwl_rx_mem_buffer *rxb;
2380         struct iwl_rx_packet *pkt;
2381         struct iwl_rx_queue *rxq = &priv->rxq;
2382         u32 r, i;
2383         int reclaim;
2384         unsigned long flags;
2385         u8 fill_rx = 0;
2386         u32 count = 8;
2387
2388         /* uCode's read index (stored in shared DRAM) indicates the last Rx
2389          * buffer that the driver may process (last buffer filled by ucode). */
2390         r = priv->cfg->ops->lib->shared_mem_rx_idx(priv);
2391         i = rxq->read;
2392
2393         /* Rx interrupt, but nothing sent from uCode */
2394         if (i == r)
2395                 IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d\n", r, i);
2396
2397         if (iwl_rx_queue_space(rxq) > (RX_QUEUE_SIZE / 2))
2398                 fill_rx = 1;
2399
2400         while (i != r) {
2401                 rxb = rxq->queue[i];
2402
2403                 /* If an RXB doesn't have a Rx queue slot associated with it,
2404                  * then a bug has been introduced in the queue refilling
2405                  * routines -- catch it here */
2406                 BUG_ON(rxb == NULL);
2407
2408                 rxq->queue[i] = NULL;
2409
2410                 pci_dma_sync_single_for_cpu(priv->pci_dev, rxb->dma_addr,
2411                                             priv->hw_params.rx_buf_size,
2412                                             PCI_DMA_FROMDEVICE);
2413                 pkt = (struct iwl_rx_packet *)rxb->skb->data;
2414
2415                 /* Reclaim a command buffer only if this packet is a response
2416                  *   to a (driver-originated) command.
2417                  * If the packet (e.g. Rx frame) originated from uCode,
2418                  *   there is no command buffer to reclaim.
2419                  * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
2420                  *   but apparently a few don't get set; catch them here. */
2421                 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
2422                         (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
2423                         (pkt->hdr.cmd != REPLY_RX) &&
2424                         (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
2425                         (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
2426                         (pkt->hdr.cmd != REPLY_TX);
2427
2428                 /* Based on type of command response or notification,
2429                  *   handle those that need handling via function in
2430                  *   rx_handlers table.  See iwl4965_setup_rx_handlers() */
2431                 if (priv->rx_handlers[pkt->hdr.cmd]) {
2432                         IWL_DEBUG(IWL_DL_RX, "r = %d, i = %d, %s, 0x%02x\n", r,
2433                                 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
2434                         priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
2435                 } else {
2436                         /* No handling needed */
2437                         IWL_DEBUG(IWL_DL_RX,
2438                                 "r %d i %d No handler needed for %s, 0x%02x\n",
2439                                 r, i, get_cmd_string(pkt->hdr.cmd),
2440                                 pkt->hdr.cmd);
2441                 }
2442
2443                 if (reclaim) {
2444                         /* Invoke any callbacks, transfer the skb to caller, and
2445                          * fire off the (possibly) blocking iwl_send_cmd()
2446                          * as we reclaim the driver command queue */
2447                         if (rxb && rxb->skb)
2448                                 iwl4965_tx_cmd_complete(priv, rxb);
2449                         else
2450                                 IWL_WARNING("Claim null rxb?\n");
2451                 }
2452
2453                 /* For now we just don't re-use anything.  We can tweak this
2454                  * later to try and re-use notification packets and SKBs that
2455                  * fail to Rx correctly */
2456                 if (rxb->skb != NULL) {
2457                         priv->alloc_rxb_skb--;
2458                         dev_kfree_skb_any(rxb->skb);
2459                         rxb->skb = NULL;
2460                 }
2461
2462                 pci_unmap_single(priv->pci_dev, rxb->dma_addr,
2463                                  priv->hw_params.rx_buf_size,
2464                                  PCI_DMA_FROMDEVICE);
2465                 spin_lock_irqsave(&rxq->lock, flags);
2466                 list_add_tail(&rxb->list, &priv->rxq.rx_used);
2467                 spin_unlock_irqrestore(&rxq->lock, flags);
2468                 i = (i + 1) & RX_QUEUE_MASK;
2469                 /* If there are a lot of unused frames,
2470                  * restock the Rx queue so ucode wont assert. */
2471                 if (fill_rx) {
2472                         count++;
2473                         if (count >= 8) {
2474                                 priv->rxq.read = i;
2475                                 __iwl_rx_replenish(priv);
2476                                 count = 0;
2477                         }
2478                 }
2479         }
2480
2481         /* Backtrack one entry */
2482         priv->rxq.read = i;
2483         iwl_rx_queue_restock(priv);
2484 }
2485 /* Convert linear signal-to-noise ratio into dB */
2486 static u8 ratio2dB[100] = {
2487 /*       0   1   2   3   4   5   6   7   8   9 */
2488          0,  0,  6, 10, 12, 14, 16, 17, 18, 19, /* 00 - 09 */
2489         20, 21, 22, 22, 23, 23, 24, 25, 26, 26, /* 10 - 19 */
2490         26, 26, 26, 27, 27, 28, 28, 28, 29, 29, /* 20 - 29 */
2491         29, 30, 30, 30, 31, 31, 31, 31, 32, 32, /* 30 - 39 */
2492         32, 32, 32, 33, 33, 33, 33, 33, 34, 34, /* 40 - 49 */
2493         34, 34, 34, 34, 35, 35, 35, 35, 35, 35, /* 50 - 59 */
2494         36, 36, 36, 36, 36, 36, 36, 37, 37, 37, /* 60 - 69 */
2495         37, 37, 37, 37, 37, 38, 38, 38, 38, 38, /* 70 - 79 */
2496         38, 38, 38, 38, 38, 39, 39, 39, 39, 39, /* 80 - 89 */
2497         39, 39, 39, 39, 39, 40, 40, 40, 40, 40  /* 90 - 99 */
2498 };
2499
2500 /* Calculates a relative dB value from a ratio of linear
2501  *   (i.e. not dB) signal levels.
2502  * Conversion assumes that levels are voltages (20*log), not powers (10*log). */
2503 int iwl4965_calc_db_from_ratio(int sig_ratio)
2504 {
2505         /* 1000:1 or higher just report as 60 dB */
2506         if (sig_ratio >= 1000)
2507                 return 60;
2508
2509         /* 100:1 or higher, divide by 10 and use table,
2510          *   add 20 dB to make up for divide by 10 */
2511         if (sig_ratio >= 100)
2512                 return (20 + (int)ratio2dB[sig_ratio/10]);
2513
2514         /* We shouldn't see this */
2515         if (sig_ratio < 1)
2516                 return 0;
2517
2518         /* Use table for ratios 1:1 - 99:1 */
2519         return (int)ratio2dB[sig_ratio];
2520 }
2521
2522 #define PERFECT_RSSI (-20) /* dBm */
2523 #define WORST_RSSI (-95)   /* dBm */
2524 #define RSSI_RANGE (PERFECT_RSSI - WORST_RSSI)
2525
2526 /* Calculate an indication of rx signal quality (a percentage, not dBm!).
2527  * See http://www.ces.clemson.edu/linux/signal_quality.shtml for info
2528  *   about formulas used below. */
2529 int iwl4965_calc_sig_qual(int rssi_dbm, int noise_dbm)
2530 {
2531         int sig_qual;
2532         int degradation = PERFECT_RSSI - rssi_dbm;
2533
2534         /* If we get a noise measurement, use signal-to-noise ratio (SNR)
2535          * as indicator; formula is (signal dbm - noise dbm).
2536          * SNR at or above 40 is a great signal (100%).
2537          * Below that, scale to fit SNR of 0 - 40 dB within 0 - 100% indicator.
2538          * Weakest usable signal is usually 10 - 15 dB SNR. */
2539         if (noise_dbm) {
2540                 if (rssi_dbm - noise_dbm >= 40)
2541                         return 100;
2542                 else if (rssi_dbm < noise_dbm)
2543                         return 0;
2544                 sig_qual = ((rssi_dbm - noise_dbm) * 5) / 2;
2545
2546         /* Else use just the signal level.
2547          * This formula is a least squares fit of data points collected and
2548          *   compared with a reference system that had a percentage (%) display
2549          *   for signal quality. */
2550         } else
2551                 sig_qual = (100 * (RSSI_RANGE * RSSI_RANGE) - degradation *
2552                             (15 * RSSI_RANGE + 62 * degradation)) /
2553                            (RSSI_RANGE * RSSI_RANGE);
2554
2555         if (sig_qual > 100)
2556                 sig_qual = 100;
2557         else if (sig_qual < 1)
2558                 sig_qual = 0;
2559
2560         return sig_qual;
2561 }
2562
2563 #ifdef CONFIG_IWLWIFI_DEBUG
2564 static void iwl4965_print_rx_config_cmd(struct iwl_priv *priv)
2565 {
2566         struct iwl_rxon_cmd *rxon = &priv->staging_rxon;
2567         DECLARE_MAC_BUF(mac);
2568
2569         IWL_DEBUG_RADIO("RX CONFIG:\n");
2570         iwl_print_hex_dump(priv, IWL_DL_RADIO, (u8 *) rxon, sizeof(*rxon));
2571         IWL_DEBUG_RADIO("u16 channel: 0x%x\n", le16_to_cpu(rxon->channel));
2572         IWL_DEBUG_RADIO("u32 flags: 0x%08X\n", le32_to_cpu(rxon->flags));
2573         IWL_DEBUG_RADIO("u32 filter_flags: 0x%08x\n",
2574                         le32_to_cpu(rxon->filter_flags));
2575         IWL_DEBUG_RADIO("u8 dev_type: 0x%x\n", rxon->dev_type);
2576         IWL_DEBUG_RADIO("u8 ofdm_basic_rates: 0x%02x\n",
2577                         rxon->ofdm_basic_rates);
2578         IWL_DEBUG_RADIO("u8 cck_basic_rates: 0x%02x\n", rxon->cck_basic_rates);
2579         IWL_DEBUG_RADIO("u8[6] node_addr: %s\n",
2580                         print_mac(mac, rxon->node_addr));
2581         IWL_DEBUG_RADIO("u8[6] bssid_addr: %s\n",
2582                         print_mac(mac, rxon->bssid_addr));
2583         IWL_DEBUG_RADIO("u16 assoc_id: 0x%x\n", le16_to_cpu(rxon->assoc_id));
2584 }
2585 #endif
2586
2587 static void iwl4965_enable_interrupts(struct iwl_priv *priv)
2588 {
2589         IWL_DEBUG_ISR("Enabling interrupts\n");
2590         set_bit(STATUS_INT_ENABLED, &priv->status);
2591         iwl_write32(priv, CSR_INT_MASK, CSR_INI_SET_MASK);
2592 }
2593
2594 /* call this function to flush any scheduled tasklet */
2595 static inline void iwl_synchronize_irq(struct iwl_priv *priv)
2596 {
2597         /* wait to make sure we flush pedding tasklet*/
2598         synchronize_irq(priv->pci_dev->irq);
2599         tasklet_kill(&priv->irq_tasklet);
2600 }
2601
2602 static inline void iwl4965_disable_interrupts(struct iwl_priv *priv)
2603 {
2604         clear_bit(STATUS_INT_ENABLED, &priv->status);
2605
2606         /* disable interrupts from uCode/NIC to host */
2607         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2608
2609         /* acknowledge/clear/reset any interrupts still pending
2610          * from uCode or flow handler (Rx/Tx DMA) */
2611         iwl_write32(priv, CSR_INT, 0xffffffff);
2612         iwl_write32(priv, CSR_FH_INT_STATUS, 0xffffffff);
2613         IWL_DEBUG_ISR("Disabled interrupts\n");
2614 }
2615
2616
2617 /**
2618  * iwl4965_irq_handle_error - called for HW or SW error interrupt from card
2619  */
2620 static void iwl4965_irq_handle_error(struct iwl_priv *priv)
2621 {
2622         /* Set the FW error flag -- cleared on iwl4965_down */
2623         set_bit(STATUS_FW_ERROR, &priv->status);
2624
2625         /* Cancel currently queued command. */
2626         clear_bit(STATUS_HCMD_ACTIVE, &priv->status);
2627
2628 #ifdef CONFIG_IWLWIFI_DEBUG
2629         if (priv->debug_level & IWL_DL_FW_ERRORS) {
2630                 iwl_dump_nic_error_log(priv);
2631                 iwl_dump_nic_event_log(priv);
2632                 iwl4965_print_rx_config_cmd(priv);
2633         }
2634 #endif
2635
2636         wake_up_interruptible(&priv->wait_command_queue);
2637
2638         /* Keep the restart process from trying to send host
2639          * commands by clearing the INIT status bit */
2640         clear_bit(STATUS_READY, &priv->status);
2641
2642         if (!test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2643                 IWL_DEBUG(IWL_DL_FW_ERRORS,
2644                           "Restarting adapter due to uCode error.\n");
2645
2646                 if (iwl_is_associated(priv)) {
2647                         memcpy(&priv->recovery_rxon, &priv->active_rxon,
2648                                sizeof(priv->recovery_rxon));
2649                         priv->error_recovering = 1;
2650                 }
2651                 if (priv->cfg->mod_params->restart_fw)
2652                         queue_work(priv->workqueue, &priv->restart);
2653         }
2654 }
2655
2656 static void iwl4965_error_recovery(struct iwl_priv *priv)
2657 {
2658         unsigned long flags;
2659
2660         memcpy(&priv->staging_rxon, &priv->recovery_rxon,
2661                sizeof(priv->staging_rxon));
2662         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2663         iwl4965_commit_rxon(priv);
2664
2665         iwl_rxon_add_station(priv, priv->bssid, 1);
2666
2667         spin_lock_irqsave(&priv->lock, flags);
2668         priv->assoc_id = le16_to_cpu(priv->staging_rxon.assoc_id);
2669         priv->error_recovering = 0;
2670         spin_unlock_irqrestore(&priv->lock, flags);
2671 }
2672
2673 static void iwl4965_irq_tasklet(struct iwl_priv *priv)
2674 {
2675         u32 inta, handled = 0;
2676         u32 inta_fh;
2677         unsigned long flags;
2678 #ifdef CONFIG_IWLWIFI_DEBUG
2679         u32 inta_mask;
2680 #endif
2681
2682         spin_lock_irqsave(&priv->lock, flags);
2683
2684         /* Ack/clear/reset pending uCode interrupts.
2685          * Note:  Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
2686          *  and will clear only when CSR_FH_INT_STATUS gets cleared. */
2687         inta = iwl_read32(priv, CSR_INT);
2688         iwl_write32(priv, CSR_INT, inta);
2689
2690         /* Ack/clear/reset pending flow-handler (DMA) interrupts.
2691          * Any new interrupts that happen after this, either while we're
2692          * in this tasklet, or later, will show up in next ISR/tasklet. */
2693         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2694         iwl_write32(priv, CSR_FH_INT_STATUS, inta_fh);
2695
2696 #ifdef CONFIG_IWLWIFI_DEBUG
2697         if (priv->debug_level & IWL_DL_ISR) {
2698                 /* just for debug */
2699                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2700                 IWL_DEBUG_ISR("inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2701                               inta, inta_mask, inta_fh);
2702         }
2703 #endif
2704
2705         /* Since CSR_INT and CSR_FH_INT_STATUS reads and clears are not
2706          * atomic, make sure that inta covers all the interrupts that
2707          * we've discovered, even if FH interrupt came in just after
2708          * reading CSR_INT. */
2709         if (inta_fh & CSR49_FH_INT_RX_MASK)
2710                 inta |= CSR_INT_BIT_FH_RX;
2711         if (inta_fh & CSR49_FH_INT_TX_MASK)
2712                 inta |= CSR_INT_BIT_FH_TX;
2713
2714         /* Now service all interrupt bits discovered above. */
2715         if (inta & CSR_INT_BIT_HW_ERR) {
2716                 IWL_ERROR("Microcode HW error detected.  Restarting.\n");
2717
2718                 /* Tell the device to stop sending interrupts */
2719                 iwl4965_disable_interrupts(priv);
2720
2721                 iwl4965_irq_handle_error(priv);
2722
2723                 handled |= CSR_INT_BIT_HW_ERR;
2724
2725                 spin_unlock_irqrestore(&priv->lock, flags);
2726
2727                 return;
2728         }
2729
2730 #ifdef CONFIG_IWLWIFI_DEBUG
2731         if (priv->debug_level & (IWL_DL_ISR)) {
2732                 /* NIC fires this, but we don't use it, redundant with WAKEUP */
2733                 if (inta & CSR_INT_BIT_SCD)
2734                         IWL_DEBUG_ISR("Scheduler finished to transmit "
2735                                       "the frame/frames.\n");
2736
2737                 /* Alive notification via Rx interrupt will do the real work */
2738                 if (inta & CSR_INT_BIT_ALIVE)
2739                         IWL_DEBUG_ISR("Alive interrupt\n");
2740         }
2741 #endif
2742         /* Safely ignore these bits for debug checks below */
2743         inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
2744
2745         /* HW RF KILL switch toggled */
2746         if (inta & CSR_INT_BIT_RF_KILL) {
2747                 int hw_rf_kill = 0;
2748                 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
2749                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
2750                         hw_rf_kill = 1;
2751
2752                 IWL_DEBUG(IWL_DL_RF_KILL, "RF_KILL bit toggled to %s.\n",
2753                                 hw_rf_kill ? "disable radio":"enable radio");
2754
2755                 /* Queue restart only if RF_KILL switch was set to "kill"
2756                  *   when we loaded driver, and is now set to "enable".
2757                  * After we're Alive, RF_KILL gets handled by
2758                  *   iwl4965_rx_card_state_notif() */
2759                 if (!hw_rf_kill && !test_bit(STATUS_ALIVE, &priv->status)) {
2760                         clear_bit(STATUS_RF_KILL_HW, &priv->status);
2761                         queue_work(priv->workqueue, &priv->restart);
2762                 }
2763
2764                 handled |= CSR_INT_BIT_RF_KILL;
2765         }
2766
2767         /* Chip got too hot and stopped itself */
2768         if (inta & CSR_INT_BIT_CT_KILL) {
2769                 IWL_ERROR("Microcode CT kill error detected.\n");
2770                 handled |= CSR_INT_BIT_CT_KILL;
2771         }
2772
2773         /* Error detected by uCode */
2774         if (inta & CSR_INT_BIT_SW_ERR) {
2775                 IWL_ERROR("Microcode SW error detected.  Restarting 0x%X.\n",
2776                           inta);
2777                 iwl4965_irq_handle_error(priv);
2778                 handled |= CSR_INT_BIT_SW_ERR;
2779         }
2780
2781         /* uCode wakes up after power-down sleep */
2782         if (inta & CSR_INT_BIT_WAKEUP) {
2783                 IWL_DEBUG_ISR("Wakeup interrupt\n");
2784                 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
2785                 iwl_txq_update_write_ptr(priv, &priv->txq[0]);
2786                 iwl_txq_update_write_ptr(priv, &priv->txq[1]);
2787                 iwl_txq_update_write_ptr(priv, &priv->txq[2]);
2788                 iwl_txq_update_write_ptr(priv, &priv->txq[3]);
2789                 iwl_txq_update_write_ptr(priv, &priv->txq[4]);
2790                 iwl_txq_update_write_ptr(priv, &priv->txq[5]);
2791
2792                 handled |= CSR_INT_BIT_WAKEUP;
2793         }
2794
2795         /* All uCode command responses, including Tx command responses,
2796          * Rx "responses" (frame-received notification), and other
2797          * notifications from uCode come through here*/
2798         if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
2799                 iwl_rx_handle(priv);
2800                 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
2801         }
2802
2803         if (inta & CSR_INT_BIT_FH_TX) {
2804                 IWL_DEBUG_ISR("Tx interrupt\n");
2805                 handled |= CSR_INT_BIT_FH_TX;
2806                 /* FH finished to write, send event */
2807                 priv->ucode_write_complete = 1;
2808                 wake_up_interruptible(&priv->wait_command_queue);
2809         }
2810
2811         if (inta & ~handled)
2812                 IWL_ERROR("Unhandled INTA bits 0x%08x\n", inta & ~handled);
2813
2814         if (inta & ~CSR_INI_SET_MASK) {
2815                 IWL_WARNING("Disabled INTA bits 0x%08x were pending\n",
2816                          inta & ~CSR_INI_SET_MASK);
2817                 IWL_WARNING("   with FH_INT = 0x%08x\n", inta_fh);
2818         }
2819
2820         /* Re-enable all interrupts */
2821         /* only Re-enable if diabled by irq */
2822         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2823                 iwl4965_enable_interrupts(priv);
2824
2825 #ifdef CONFIG_IWLWIFI_DEBUG
2826         if (priv->debug_level & (IWL_DL_ISR)) {
2827                 inta = iwl_read32(priv, CSR_INT);
2828                 inta_mask = iwl_read32(priv, CSR_INT_MASK);
2829                 inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2830                 IWL_DEBUG_ISR("End inta 0x%08x, enabled 0x%08x, fh 0x%08x, "
2831                         "flags 0x%08lx\n", inta, inta_mask, inta_fh, flags);
2832         }
2833 #endif
2834         spin_unlock_irqrestore(&priv->lock, flags);
2835 }
2836
2837 static irqreturn_t iwl4965_isr(int irq, void *data)
2838 {
2839         struct iwl_priv *priv = data;
2840         u32 inta, inta_mask;
2841         u32 inta_fh;
2842         if (!priv)
2843                 return IRQ_NONE;
2844
2845         spin_lock(&priv->lock);
2846
2847         /* Disable (but don't clear!) interrupts here to avoid
2848          *    back-to-back ISRs and sporadic interrupts from our NIC.
2849          * If we have something to service, the tasklet will re-enable ints.
2850          * If we *don't* have something, we'll re-enable before leaving here. */
2851         inta_mask = iwl_read32(priv, CSR_INT_MASK);  /* just for debug */
2852         iwl_write32(priv, CSR_INT_MASK, 0x00000000);
2853
2854         /* Discover which interrupts are active/pending */
2855         inta = iwl_read32(priv, CSR_INT);
2856         inta_fh = iwl_read32(priv, CSR_FH_INT_STATUS);
2857
2858         /* Ignore interrupt if there's nothing in NIC to service.
2859          * This may be due to IRQ shared with another device,
2860          * or due to sporadic interrupts thrown from our NIC. */
2861         if (!inta && !inta_fh) {
2862                 IWL_DEBUG_ISR("Ignore interrupt, inta == 0, inta_fh == 0\n");
2863                 goto none;
2864         }
2865
2866         if ((inta == 0xFFFFFFFF) || ((inta & 0xFFFFFFF0) == 0xa5a5a5a0)) {
2867                 /* Hardware disappeared. It might have already raised
2868                  * an interrupt */
2869                 IWL_WARNING("HARDWARE GONE?? INTA == 0x%080x\n", inta);
2870                 goto unplugged;
2871         }
2872
2873         IWL_DEBUG_ISR("ISR inta 0x%08x, enabled 0x%08x, fh 0x%08x\n",
2874                       inta, inta_mask, inta_fh);
2875
2876         inta &= ~CSR_INT_BIT_SCD;
2877
2878         /* iwl4965_irq_tasklet() will service interrupts and re-enable them */
2879         if (likely(inta || inta_fh))
2880                 tasklet_schedule(&priv->irq_tasklet);
2881
2882  unplugged:
2883         spin_unlock(&priv->lock);
2884         return IRQ_HANDLED;
2885
2886  none:
2887         /* re-enable interrupts here since we don't have anything to service. */
2888         /* only Re-enable if diabled by irq */
2889         if (test_bit(STATUS_INT_ENABLED, &priv->status))
2890                 iwl4965_enable_interrupts(priv);
2891         spin_unlock(&priv->lock);
2892         return IRQ_NONE;
2893 }
2894
2895 /* For active scan, listen ACTIVE_DWELL_TIME (msec) on each channel after
2896  * sending probe req.  This should be set long enough to hear probe responses
2897  * from more than one AP.  */
2898 #define IWL_ACTIVE_DWELL_TIME_24    (20)        /* all times in msec */
2899 #define IWL_ACTIVE_DWELL_TIME_52    (10)
2900
2901 /* For faster active scanning, scan will move to the next channel if fewer than
2902  * PLCP_QUIET_THRESH packets are heard on this channel within
2903  * ACTIVE_QUIET_TIME after sending probe request.  This shortens the dwell
2904  * time if it's a quiet channel (nothing responded to our probe, and there's
2905  * no other traffic).
2906  * Disable "quiet" feature by setting PLCP_QUIET_THRESH to 0. */
2907 #define IWL_PLCP_QUIET_THRESH       __constant_cpu_to_le16(1)   /* packets */
2908 #define IWL_ACTIVE_QUIET_TIME       __constant_cpu_to_le16(5)   /* msec */
2909
2910 /* For passive scan, listen PASSIVE_DWELL_TIME (msec) on each channel.
2911  * Must be set longer than active dwell time.
2912  * For the most reliable scan, set > AP beacon interval (typically 100msec). */
2913 #define IWL_PASSIVE_DWELL_TIME_24   (20)        /* all times in msec */
2914 #define IWL_PASSIVE_DWELL_TIME_52   (10)
2915 #define IWL_PASSIVE_DWELL_BASE      (100)
2916 #define IWL_CHANNEL_TUNE_TIME       5
2917
2918 static inline u16 iwl4965_get_active_dwell_time(struct iwl_priv *priv,
2919                                                 enum ieee80211_band band)
2920 {
2921         if (band == IEEE80211_BAND_5GHZ)
2922                 return IWL_ACTIVE_DWELL_TIME_52;
2923         else
2924                 return IWL_ACTIVE_DWELL_TIME_24;
2925 }
2926
2927 static u16 iwl4965_get_passive_dwell_time(struct iwl_priv *priv,
2928                                           enum ieee80211_band band)
2929 {
2930         u16 active = iwl4965_get_active_dwell_time(priv, band);
2931         u16 passive = (band != IEEE80211_BAND_5GHZ) ?
2932             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_24 :
2933             IWL_PASSIVE_DWELL_BASE + IWL_PASSIVE_DWELL_TIME_52;
2934
2935         if (iwl_is_associated(priv)) {
2936                 /* If we're associated, we clamp the maximum passive
2937                  * dwell time to be 98% of the beacon interval (minus
2938                  * 2 * channel tune time) */
2939                 passive = priv->beacon_int;
2940                 if ((passive > IWL_PASSIVE_DWELL_BASE) || !passive)
2941                         passive = IWL_PASSIVE_DWELL_BASE;
2942                 passive = (passive * 98) / 100 - IWL_CHANNEL_TUNE_TIME * 2;
2943         }
2944
2945         if (passive <= active)
2946                 passive = active + 1;
2947
2948         return passive;
2949 }
2950
2951 static int iwl4965_get_channels_for_scan(struct iwl_priv *priv,
2952                                          enum ieee80211_band band,
2953                                      u8 is_active, u8 direct_mask,
2954                                      struct iwl4965_scan_channel *scan_ch)
2955 {
2956         const struct ieee80211_channel *channels = NULL;
2957         const struct ieee80211_supported_band *sband;
2958         const struct iwl_channel_info *ch_info;
2959         u16 passive_dwell = 0;
2960         u16 active_dwell = 0;
2961         int added, i;
2962
2963         sband = iwl_get_hw_mode(priv, band);
2964         if (!sband)
2965                 return 0;
2966
2967         channels = sband->channels;
2968
2969         active_dwell = iwl4965_get_active_dwell_time(priv, band);
2970         passive_dwell = iwl4965_get_passive_dwell_time(priv, band);
2971
2972         for (i = 0, added = 0; i < sband->n_channels; i++) {
2973                 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
2974                         continue;
2975
2976                 scan_ch->channel = ieee80211_frequency_to_channel(channels[i].center_freq);
2977
2978                 ch_info = iwl_get_channel_info(priv, band,
2979                                          scan_ch->channel);
2980                 if (!is_channel_valid(ch_info)) {
2981                         IWL_DEBUG_SCAN("Channel %d is INVALID for this SKU.\n",
2982                                        scan_ch->channel);
2983                         continue;
2984                 }
2985
2986                 if (!is_active || is_channel_passive(ch_info) ||
2987                     (channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN))
2988                         scan_ch->type = 0;      /* passive */
2989                 else
2990                         scan_ch->type = 1;      /* active */
2991
2992                 if (scan_ch->type & 1)
2993                         scan_ch->type |= (direct_mask << 1);
2994
2995                 scan_ch->active_dwell = cpu_to_le16(active_dwell);
2996                 scan_ch->passive_dwell = cpu_to_le16(passive_dwell);
2997
2998                 /* Set txpower levels to defaults */
2999                 scan_ch->tpc.dsp_atten = 110;
3000                 /* scan_pwr_info->tpc.dsp_atten; */
3001
3002                 /*scan_pwr_info->tpc.tx_gain; */
3003                 if (band == IEEE80211_BAND_5GHZ)
3004                         scan_ch->tpc.tx_gain = ((1 << 5) | (3 << 3)) | 3;
3005                 else {
3006                         scan_ch->tpc.tx_gain = ((1 << 5) | (5 << 3));
3007                         /* NOTE: if we were doing 6Mb OFDM for scans we'd use
3008                          * power level:
3009                          * scan_ch->tpc.tx_gain = ((1 << 5) | (2 << 3)) | 3;
3010                          */
3011                 }
3012
3013                 IWL_DEBUG_SCAN("Scanning %d [%s %d]\n",
3014                                scan_ch->channel,
3015                                (scan_ch->type & 1) ? "ACTIVE" : "PASSIVE",
3016                                (scan_ch->type & 1) ?
3017                                active_dwell : passive_dwell);
3018
3019                 scan_ch++;
3020                 added++;
3021         }
3022
3023         IWL_DEBUG_SCAN("total channels to scan %d \n", added);
3024         return added;
3025 }
3026
3027 /******************************************************************************
3028  *
3029  * uCode download functions
3030  *
3031  ******************************************************************************/
3032
3033 static void iwl4965_dealloc_ucode_pci(struct iwl_priv *priv)
3034 {
3035         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_code);
3036         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data);
3037         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3038         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init);
3039         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3040         iwl_free_fw_desc(priv->pci_dev, &priv->ucode_boot);
3041 }
3042
3043 static void iwl4965_nic_start(struct iwl_priv *priv)
3044 {
3045         /* Remove all resets to allow NIC to operate */
3046         iwl_write32(priv, CSR_RESET, 0);
3047 }
3048
3049
3050 /**
3051  * iwl4965_read_ucode - Read uCode images from disk file.
3052  *
3053  * Copy into buffers for card to fetch via bus-mastering
3054  */
3055 static int iwl4965_read_ucode(struct iwl_priv *priv)
3056 {
3057         struct iwl4965_ucode *ucode;
3058         int ret;
3059         const struct firmware *ucode_raw;
3060         const char *name = priv->cfg->fw_name;
3061         u8 *src;
3062         size_t len;
3063         u32 ver, inst_size, data_size, init_size, init_data_size, boot_size;
3064
3065         /* Ask kernel firmware_class module to get the boot firmware off disk.
3066          * request_firmware() is synchronous, file is in memory on return. */
3067         ret = request_firmware(&ucode_raw, name, &priv->pci_dev->dev);
3068         if (ret < 0) {
3069                 IWL_ERROR("%s firmware file req failed: Reason %d\n",
3070                                         name, ret);
3071                 goto error;
3072         }
3073
3074         IWL_DEBUG_INFO("Got firmware '%s' file (%zd bytes) from disk\n",
3075                        name, ucode_raw->size);
3076
3077         /* Make sure that we got at least our header! */
3078         if (ucode_raw->size < sizeof(*ucode)) {
3079                 IWL_ERROR("File size way too small!\n");
3080                 ret = -EINVAL;
3081                 goto err_release;
3082         }
3083
3084         /* Data from ucode file:  header followed by uCode images */
3085         ucode = (void *)ucode_raw->data;
3086
3087         ver = le32_to_cpu(ucode->ver);
3088         inst_size = le32_to_cpu(ucode->inst_size);
3089         data_size = le32_to_cpu(ucode->data_size);
3090         init_size = le32_to_cpu(ucode->init_size);
3091         init_data_size = le32_to_cpu(ucode->init_data_size);
3092         boot_size = le32_to_cpu(ucode->boot_size);
3093
3094         IWL_DEBUG_INFO("f/w package hdr ucode version = 0x%x\n", ver);
3095         IWL_DEBUG_INFO("f/w package hdr runtime inst size = %u\n",
3096                        inst_size);
3097         IWL_DEBUG_INFO("f/w package hdr runtime data size = %u\n",
3098                        data_size);
3099         IWL_DEBUG_INFO("f/w package hdr init inst size = %u\n",
3100                        init_size);
3101         IWL_DEBUG_INFO("f/w package hdr init data size = %u\n",
3102                        init_data_size);
3103         IWL_DEBUG_INFO("f/w package hdr boot inst size = %u\n",
3104                        boot_size);
3105
3106         /* Verify size of file vs. image size info in file's header */
3107         if (ucode_raw->size < sizeof(*ucode) +
3108                 inst_size + data_size + init_size +
3109                 init_data_size + boot_size) {
3110
3111                 IWL_DEBUG_INFO("uCode file size %d too small\n",
3112                                (int)ucode_raw->size);
3113                 ret = -EINVAL;
3114                 goto err_release;
3115         }
3116
3117         /* Verify that uCode images will fit in card's SRAM */
3118         if (inst_size > priv->hw_params.max_inst_size) {
3119                 IWL_DEBUG_INFO("uCode instr len %d too large to fit in\n",
3120                                inst_size);
3121                 ret = -EINVAL;
3122                 goto err_release;
3123         }
3124
3125         if (data_size > priv->hw_params.max_data_size) {
3126                 IWL_DEBUG_INFO("uCode data len %d too large to fit in\n",
3127                                 data_size);
3128                 ret = -EINVAL;
3129                 goto err_release;
3130         }
3131         if (init_size > priv->hw_params.max_inst_size) {
3132                 IWL_DEBUG_INFO
3133                     ("uCode init instr len %d too large to fit in\n",
3134                       init_size);
3135                 ret = -EINVAL;
3136                 goto err_release;
3137         }
3138         if (init_data_size > priv->hw_params.max_data_size) {
3139                 IWL_DEBUG_INFO
3140                     ("uCode init data len %d too large to fit in\n",
3141                       init_data_size);
3142                 ret = -EINVAL;
3143                 goto err_release;
3144         }
3145         if (boot_size > priv->hw_params.max_bsm_size) {
3146                 IWL_DEBUG_INFO
3147                     ("uCode boot instr len %d too large to fit in\n",
3148                       boot_size);
3149                 ret = -EINVAL;
3150                 goto err_release;
3151         }
3152
3153         /* Allocate ucode buffers for card's bus-master loading ... */
3154
3155         /* Runtime instructions and 2 copies of data:
3156          * 1) unmodified from disk
3157          * 2) backup cache for save/restore during power-downs */
3158         priv->ucode_code.len = inst_size;
3159         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_code);
3160
3161         priv->ucode_data.len = data_size;
3162         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data);
3163
3164         priv->ucode_data_backup.len = data_size;
3165         iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_data_backup);
3166
3167         /* Initialization instructions and data */
3168         if (init_size && init_data_size) {
3169                 priv->ucode_init.len = init_size;
3170                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init);
3171
3172                 priv->ucode_init_data.len = init_data_size;
3173                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_init_data);
3174
3175                 if (!priv->ucode_init.v_addr || !priv->ucode_init_data.v_addr)
3176                         goto err_pci_alloc;
3177         }
3178
3179         /* Bootstrap (instructions only, no data) */
3180         if (boot_size) {
3181                 priv->ucode_boot.len = boot_size;
3182                 iwl_alloc_fw_desc(priv->pci_dev, &priv->ucode_boot);
3183
3184                 if (!priv->ucode_boot.v_addr)
3185                         goto err_pci_alloc;
3186         }
3187
3188         /* Copy images into buffers for card's bus-master reads ... */
3189
3190         /* Runtime instructions (first block of data in file) */
3191         src = &ucode->data[0];
3192         len = priv->ucode_code.len;
3193         IWL_DEBUG_INFO("Copying (but not loading) uCode instr len %Zd\n", len);
3194         memcpy(priv->ucode_code.v_addr, src, len);
3195         IWL_DEBUG_INFO("uCode instr buf vaddr = 0x%p, paddr = 0x%08x\n",
3196                 priv->ucode_code.v_addr, (u32)priv->ucode_code.p_addr);
3197
3198         /* Runtime data (2nd block)
3199          * NOTE:  Copy into backup buffer will be done in iwl4965_up()  */
3200         src = &ucode->data[inst_size];
3201         len = priv->ucode_data.len;
3202         IWL_DEBUG_INFO("Copying (but not loading) uCode data len %Zd\n", len);
3203         memcpy(priv->ucode_data.v_addr, src, len);
3204         memcpy(priv->ucode_data_backup.v_addr, src, len);
3205
3206         /* Initialization instructions (3rd block) */
3207         if (init_size) {
3208                 src = &ucode->data[inst_size + data_size];
3209                 len = priv->ucode_init.len;
3210                 IWL_DEBUG_INFO("Copying (but not loading) init instr len %Zd\n",
3211                                 len);
3212                 memcpy(priv->ucode_init.v_addr, src, len);
3213         }
3214
3215         /* Initialization data (4th block) */
3216         if (init_data_size) {
3217                 src = &ucode->data[inst_size + data_size + init_size];
3218                 len = priv->ucode_init_data.len;
3219                 IWL_DEBUG_INFO("Copying (but not loading) init data len %Zd\n",
3220                                len);
3221                 memcpy(priv->ucode_init_data.v_addr, src, len);
3222         }
3223
3224         /* Bootstrap instructions (5th block) */
3225         src = &ucode->data[inst_size + data_size + init_size + init_data_size];
3226         len = priv->ucode_boot.len;
3227         IWL_DEBUG_INFO("Copying (but not loading) boot instr len %Zd\n", len);
3228         memcpy(priv->ucode_boot.v_addr, src, len);
3229
3230         /* We have our copies now, allow OS release its copies */
3231         release_firmware(ucode_raw);
3232         return 0;
3233
3234  err_pci_alloc:
3235         IWL_ERROR("failed to allocate pci memory\n");
3236         ret = -ENOMEM;
3237         iwl4965_dealloc_ucode_pci(priv);
3238
3239  err_release:
3240         release_firmware(ucode_raw);
3241
3242  error:
3243         return ret;
3244 }
3245
3246 /**
3247  * iwl_alive_start - called after REPLY_ALIVE notification received
3248  *                   from protocol/runtime uCode (initialization uCode's
3249  *                   Alive gets handled by iwl_init_alive_start()).
3250  */
3251 static void iwl_alive_start(struct iwl_priv *priv)
3252 {
3253         int ret = 0;
3254
3255         IWL_DEBUG_INFO("Runtime Alive received.\n");
3256
3257         if (priv->card_alive.is_valid != UCODE_VALID_OK) {
3258                 /* We had an error bringing up the hardware, so take it
3259                  * all the way back down so we can try again */
3260                 IWL_DEBUG_INFO("Alive failed.\n");
3261                 goto restart;
3262         }
3263
3264         /* Initialize uCode has loaded Runtime uCode ... verify inst image.
3265          * This is a paranoid check, because we would not have gotten the
3266          * "runtime" alive if code weren't properly loaded.  */
3267         if (iwl_verify_ucode(priv)) {
3268                 /* Runtime instruction load was bad;
3269                  * take it all the way back down so we can try again */
3270                 IWL_DEBUG_INFO("Bad runtime uCode load.\n");
3271                 goto restart;
3272         }
3273
3274         iwlcore_clear_stations_table(priv);
3275         ret = priv->cfg->ops->lib->alive_notify(priv);
3276         if (ret) {
3277                 IWL_WARNING("Could not complete ALIVE transition [ntf]: %d\n",
3278                             ret);
3279                 goto restart;
3280         }
3281
3282         /* After the ALIVE response, we can send host commands to 4965 uCode */
3283         set_bit(STATUS_ALIVE, &priv->status);
3284
3285         /* Clear out the uCode error bit if it is set */
3286         clear_bit(STATUS_FW_ERROR, &priv->status);
3287
3288         if (iwl_is_rfkill(priv))
3289                 return;
3290
3291         ieee80211_wake_queues(priv->hw);
3292
3293         priv->active_rate = priv->rates_mask;
3294         priv->active_rate_basic = priv->rates_mask & IWL_BASIC_RATES_MASK;
3295
3296         if (iwl_is_associated(priv)) {
3297                 struct iwl_rxon_cmd *active_rxon =
3298                                 (struct iwl_rxon_cmd *)&priv->active_rxon;
3299
3300                 memcpy(&priv->staging_rxon, &priv->active_rxon,
3301                        sizeof(priv->staging_rxon));
3302                 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3303         } else {
3304                 /* Initialize our rx_config data */
3305                 iwl4965_connection_init_rx_config(priv);
3306                 memcpy(priv->staging_rxon.node_addr, priv->mac_addr, ETH_ALEN);
3307         }
3308
3309         /* Configure Bluetooth device coexistence support */
3310         iwl4965_send_bt_config(priv);
3311
3312         iwl_reset_run_time_calib(priv);
3313
3314         /* Configure the adapter for unassociated operation */
3315         iwl4965_commit_rxon(priv);
3316
3317         /* At this point, the NIC is initialized and operational */
3318         iwl4965_rf_kill_ct_config(priv);
3319
3320         iwl_leds_register(priv);
3321
3322         IWL_DEBUG_INFO("ALIVE processing complete.\n");
3323         set_bit(STATUS_READY, &priv->status);
3324         wake_up_interruptible(&priv->wait_command_queue);
3325
3326         if (priv->error_recovering)
3327                 iwl4965_error_recovery(priv);
3328
3329         iwlcore_low_level_notify(priv, IWLCORE_START_EVT);
3330         ieee80211_notify_mac(priv->hw, IEEE80211_NOTIFY_RE_ASSOC);
3331         return;
3332
3333  restart:
3334         queue_work(priv->workqueue, &priv->restart);
3335 }
3336
3337 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv);
3338
3339 static void __iwl4965_down(struct iwl_priv *priv)
3340 {
3341         unsigned long flags;
3342         int exit_pending = test_bit(STATUS_EXIT_PENDING, &priv->status);
3343
3344         IWL_DEBUG_INFO(DRV_NAME " is going down\n");
3345
3346         if (!exit_pending)
3347                 set_bit(STATUS_EXIT_PENDING, &priv->status);
3348
3349         iwl_leds_unregister(priv);
3350
3351         iwlcore_low_level_notify(priv, IWLCORE_STOP_EVT);
3352
3353         iwlcore_clear_stations_table(priv);
3354
3355         /* Unblock any waiting calls */
3356         wake_up_interruptible_all(&priv->wait_command_queue);
3357
3358         /* Wipe out the EXIT_PENDING status bit if we are not actually
3359          * exiting the module */
3360         if (!exit_pending)
3361                 clear_bit(STATUS_EXIT_PENDING, &priv->status);
3362
3363         /* stop and reset the on-board processor */
3364         iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3365
3366         /* tell the device to stop sending interrupts */
3367         spin_lock_irqsave(&priv->lock, flags);
3368         iwl4965_disable_interrupts(priv);
3369         spin_unlock_irqrestore(&priv->lock, flags);
3370         iwl_synchronize_irq(priv);
3371
3372         if (priv->mac80211_registered)
3373                 ieee80211_stop_queues(priv->hw);
3374
3375         /* If we have not previously called iwl4965_init() then
3376          * clear all bits but the RF Kill and SUSPEND bits and return */
3377         if (!iwl_is_init(priv)) {
3378                 priv->status = test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3379                                         STATUS_RF_KILL_HW |
3380                                test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3381                                         STATUS_RF_KILL_SW |
3382                                test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3383                                         STATUS_GEO_CONFIGURED |
3384                                test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3385                                         STATUS_IN_SUSPEND;
3386                 goto exit;
3387         }
3388
3389         /* ...otherwise clear out all the status bits but the RF Kill and
3390          * SUSPEND bits and continue taking the NIC down. */
3391         priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
3392                                 STATUS_RF_KILL_HW |
3393                         test_bit(STATUS_RF_KILL_SW, &priv->status) <<
3394                                 STATUS_RF_KILL_SW |
3395                         test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
3396                                 STATUS_GEO_CONFIGURED |
3397                         test_bit(STATUS_IN_SUSPEND, &priv->status) <<
3398                                 STATUS_IN_SUSPEND |
3399                         test_bit(STATUS_FW_ERROR, &priv->status) <<
3400                                 STATUS_FW_ERROR;
3401
3402         spin_lock_irqsave(&priv->lock, flags);
3403         iwl_clear_bit(priv, CSR_GP_CNTRL,
3404                          CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ);
3405         spin_unlock_irqrestore(&priv->lock, flags);
3406
3407         iwl4965_hw_txq_ctx_stop(priv);
3408         iwl4965_hw_rxq_stop(priv);
3409
3410         spin_lock_irqsave(&priv->lock, flags);
3411         if (!iwl_grab_nic_access(priv)) {
3412                 iwl_write_prph(priv, APMG_CLK_DIS_REG,
3413                                          APMG_CLK_VAL_DMA_CLK_RQT);
3414                 iwl_release_nic_access(priv);
3415         }
3416         spin_unlock_irqrestore(&priv->lock, flags);
3417
3418         udelay(5);
3419
3420         iwl4965_hw_nic_stop_master(priv);
3421         iwl_set_bit(priv, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
3422         iwl4965_hw_nic_reset(priv);
3423         priv->cfg->ops->lib->free_shared_mem(priv);
3424
3425  exit:
3426         memset(&priv->card_alive, 0, sizeof(struct iwl_alive_resp));
3427
3428         if (priv->ibss_beacon)
3429                 dev_kfree_skb(priv->ibss_beacon);
3430         priv->ibss_beacon = NULL;
3431
3432         /* clear out any free frames */
3433         iwl_clear_free_frames(priv);
3434 }
3435
3436 static void iwl4965_down(struct iwl_priv *priv)
3437 {
3438         mutex_lock(&priv->mutex);
3439         __iwl4965_down(priv);
3440         mutex_unlock(&priv->mutex);
3441
3442         iwl4965_cancel_deferred_work(priv);
3443 }
3444
3445 #define MAX_HW_RESTARTS 5
3446
3447 static int __iwl4965_up(struct iwl_priv *priv)
3448 {
3449         int i;
3450         int ret;
3451
3452         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3453                 IWL_WARNING("Exit pending; will not bring the NIC up\n");
3454                 return -EIO;
3455         }
3456
3457         if (test_bit(STATUS_RF_KILL_SW, &priv->status)) {
3458                 IWL_WARNING("Radio disabled by SW RF kill (module "
3459                             "parameter)\n");
3460                 iwl_rfkill_set_hw_state(priv);
3461                 return -ENODEV;
3462         }
3463
3464         if (!priv->ucode_data_backup.v_addr || !priv->ucode_data.v_addr) {
3465                 IWL_ERROR("ucode not available for device bringup\n");
3466                 return -EIO;
3467         }
3468
3469         /* If platform's RF_KILL switch is NOT set to KILL */
3470         if (iwl_read32(priv, CSR_GP_CNTRL) &
3471                                 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3472                 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3473         else {
3474                 set_bit(STATUS_RF_KILL_HW, &priv->status);
3475                 if (!test_bit(STATUS_IN_SUSPEND, &priv->status)) {
3476                         iwl_rfkill_set_hw_state(priv);
3477                         IWL_WARNING("Radio disabled by HW RF Kill switch\n");
3478                         return -ENODEV;
3479                 }
3480         }
3481
3482         iwl_rfkill_set_hw_state(priv);
3483         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3484
3485         ret = priv->cfg->ops->lib->alloc_shared_mem(priv);
3486         if (ret) {
3487                 IWL_ERROR("Unable to allocate shared memory\n");
3488                 return ret;
3489         }
3490
3491         ret = iwl_hw_nic_init(priv);
3492         if (ret) {
3493                 IWL_ERROR("Unable to init nic\n");
3494                 return ret;
3495         }
3496
3497         /* make sure rfkill handshake bits are cleared */
3498         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3499         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
3500                     CSR_UCODE_DRV_GP1_BIT_CMD_BLOCKED);
3501
3502         /* clear (again), then enable host interrupts */
3503         iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
3504         iwl4965_enable_interrupts(priv);
3505
3506         /* really make sure rfkill handshake bits are cleared */
3507         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3508         iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR, CSR_UCODE_SW_BIT_RFKILL);
3509
3510         /* Copy original ucode data image from disk into backup cache.
3511          * This will be used to initialize the on-board processor's
3512          * data SRAM for a clean start when the runtime program first loads. */
3513         memcpy(priv->ucode_data_backup.v_addr, priv->ucode_data.v_addr,
3514                priv->ucode_data.len);
3515
3516         /* We return success when we resume from suspend and rf_kill is on. */
3517         if (test_bit(STATUS_RF_KILL_HW, &priv->status))
3518                 return 0;
3519
3520         for (i = 0; i < MAX_HW_RESTARTS; i++) {
3521
3522                 iwlcore_clear_stations_table(priv);
3523
3524                 /* load bootstrap state machine,
3525                  * load bootstrap program into processor's memory,
3526                  * prepare to load the "initialize" uCode */
3527                 ret = priv->cfg->ops->lib->load_ucode(priv);
3528
3529                 if (ret) {
3530                         IWL_ERROR("Unable to set up bootstrap uCode: %d\n", ret);
3531                         continue;
3532                 }
3533
3534                 /* start card; "initialize" will load runtime ucode */
3535                 iwl4965_nic_start(priv);
3536
3537                 IWL_DEBUG_INFO(DRV_NAME " is coming up\n");
3538
3539                 return 0;
3540         }
3541
3542         set_bit(STATUS_EXIT_PENDING, &priv->status);
3543         __iwl4965_down(priv);
3544
3545         /* tried to restart and config the device for as long as our
3546          * patience could withstand */
3547         IWL_ERROR("Unable to initialize device after %d attempts.\n", i);
3548         return -EIO;
3549 }
3550
3551
3552 /*****************************************************************************
3553  *
3554  * Workqueue callbacks
3555  *
3556  *****************************************************************************/
3557
3558 static void iwl_bg_init_alive_start(struct work_struct *data)
3559 {
3560         struct iwl_priv *priv =
3561             container_of(data, struct iwl_priv, init_alive_start.work);
3562
3563         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3564                 return;
3565
3566         mutex_lock(&priv->mutex);
3567         priv->cfg->ops->lib->init_alive_start(priv);
3568         mutex_unlock(&priv->mutex);
3569 }
3570
3571 static void iwl_bg_alive_start(struct work_struct *data)
3572 {
3573         struct iwl_priv *priv =
3574             container_of(data, struct iwl_priv, alive_start.work);
3575
3576         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3577                 return;
3578
3579         mutex_lock(&priv->mutex);
3580         iwl_alive_start(priv);
3581         mutex_unlock(&priv->mutex);
3582 }
3583
3584 static void iwl4965_bg_rf_kill(struct work_struct *work)
3585 {
3586         struct iwl_priv *priv = container_of(work, struct iwl_priv, rf_kill);
3587
3588         wake_up_interruptible(&priv->wait_command_queue);
3589
3590         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3591                 return;
3592
3593         mutex_lock(&priv->mutex);
3594
3595         if (!iwl_is_rfkill(priv)) {
3596                 IWL_DEBUG(IWL_DL_RF_KILL,
3597                           "HW and/or SW RF Kill no longer active, restarting "
3598                           "device\n");
3599                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3600                         queue_work(priv->workqueue, &priv->restart);
3601         } else {
3602                 /* make sure mac80211 stop sending Tx frame */
3603                 if (priv->mac80211_registered)
3604                         ieee80211_stop_queues(priv->hw);
3605
3606                 if (!test_bit(STATUS_RF_KILL_HW, &priv->status))
3607                         IWL_DEBUG_RF_KILL("Can not turn radio back on - "
3608                                           "disabled by SW switch\n");
3609                 else
3610                         IWL_WARNING("Radio Frequency Kill Switch is On:\n"
3611                                     "Kill switch must be turned off for "
3612                                     "wireless networking to work.\n");
3613         }
3614         iwl_rfkill_set_hw_state(priv);
3615
3616         mutex_unlock(&priv->mutex);
3617 }
3618
3619 static void iwl4965_bg_set_monitor(struct work_struct *work)
3620 {
3621         struct iwl_priv *priv = container_of(work,
3622                                 struct iwl_priv, set_monitor);
3623
3624         IWL_DEBUG(IWL_DL_STATE, "setting monitor mode\n");
3625
3626         mutex_lock(&priv->mutex);
3627
3628         if (!iwl_is_ready(priv))
3629                 IWL_DEBUG(IWL_DL_STATE, "leave - not ready\n");
3630         else
3631                 if (iwl4965_set_mode(priv, IEEE80211_IF_TYPE_MNTR) != 0)
3632                         IWL_ERROR("iwl4965_set_mode() failed\n");
3633
3634         mutex_unlock(&priv->mutex);
3635 }
3636
3637 #define IWL_SCAN_CHECK_WATCHDOG (7 * HZ)
3638
3639 static void iwl4965_bg_scan_check(struct work_struct *data)
3640 {
3641         struct iwl_priv *priv =
3642             container_of(data, struct iwl_priv, scan_check.work);
3643
3644         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3645                 return;
3646
3647         mutex_lock(&priv->mutex);
3648         if (test_bit(STATUS_SCANNING, &priv->status) ||
3649             test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3650                 IWL_DEBUG(IWL_DL_SCAN, "Scan completion watchdog resetting "
3651                         "adapter (%dms)\n",
3652                         jiffies_to_msecs(IWL_SCAN_CHECK_WATCHDOG));
3653
3654                 if (!test_bit(STATUS_EXIT_PENDING, &priv->status))
3655                         iwl4965_send_scan_abort(priv);
3656         }
3657         mutex_unlock(&priv->mutex);
3658 }
3659
3660 static void iwl4965_bg_request_scan(struct work_struct *data)
3661 {
3662         struct iwl_priv *priv =
3663             container_of(data, struct iwl_priv, request_scan);
3664         struct iwl_host_cmd cmd = {
3665                 .id = REPLY_SCAN_CMD,
3666                 .len = sizeof(struct iwl4965_scan_cmd),
3667                 .meta.flags = CMD_SIZE_HUGE,
3668         };
3669         struct iwl4965_scan_cmd *scan;
3670         struct ieee80211_conf *conf = NULL;
3671         u16 cmd_len;
3672         enum ieee80211_band band;
3673         u8 direct_mask;
3674         int ret = 0;
3675
3676         conf = ieee80211_get_hw_conf(priv->hw);
3677
3678         mutex_lock(&priv->mutex);
3679
3680         if (!iwl_is_ready(priv)) {
3681                 IWL_WARNING("request scan called when driver not ready.\n");
3682                 goto done;
3683         }
3684
3685         /* Make sure the scan wasn't cancelled before this queued work
3686          * was given the chance to run... */
3687         if (!test_bit(STATUS_SCANNING, &priv->status))
3688                 goto done;
3689
3690         /* This should never be called or scheduled if there is currently
3691          * a scan active in the hardware. */
3692         if (test_bit(STATUS_SCAN_HW, &priv->status)) {
3693                 IWL_DEBUG_INFO("Multiple concurrent scan requests in parallel. "
3694                                "Ignoring second request.\n");
3695                 ret = -EIO;
3696                 goto done;
3697         }
3698
3699         if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3700                 IWL_DEBUG_SCAN("Aborting scan due to device shutdown\n");
3701                 goto done;
3702         }
3703
3704         if (test_bit(STATUS_SCAN_ABORTING, &priv->status)) {
3705                 IWL_DEBUG_HC("Scan request while abort pending.  Queuing.\n");
3706                 goto done;
3707         }
3708
3709         if (iwl_is_rfkill(priv)) {
3710                 IWL_DEBUG_HC("Aborting scan due to RF Kill activation\n");
3711                 goto done;
3712         }
3713
3714         if (!test_bit(STATUS_READY, &priv->status)) {
3715                 IWL_DEBUG_HC("Scan request while uninitialized.  Queuing.\n");
3716                 goto done;
3717         }
3718
3719         if (!priv->scan_bands) {
3720                 IWL_DEBUG_HC("Aborting scan due to no requested bands\n");
3721                 goto done;
3722         }
3723
3724         if (!priv->scan) {
3725                 priv->scan = kmalloc(sizeof(struct iwl4965_scan_cmd) +
3726                                      IWL_MAX_SCAN_SIZE, GFP_KERNEL);
3727                 if (!priv->scan) {
3728                         ret = -ENOMEM;
3729                         goto done;
3730                 }
3731         }
3732         scan = priv->scan;
3733         memset(scan, 0, sizeof(struct iwl4965_scan_cmd) + IWL_MAX_SCAN_SIZE);
3734
3735         scan->quiet_plcp_th = IWL_PLCP_QUIET_THRESH;
3736         scan->quiet_time = IWL_ACTIVE_QUIET_TIME;
3737
3738         if (iwl_is_associated(priv)) {
3739                 u16 interval = 0;
3740                 u32 extra;
3741                 u32 suspend_time = 100;
3742                 u32 scan_suspend_time = 100;
3743                 unsigned long flags;
3744
3745                 IWL_DEBUG_INFO("Scanning while associated...\n");
3746
3747                 spin_lock_irqsave(&priv->lock, flags);
3748                 interval = priv->beacon_int;
3749                 spin_unlock_irqrestore(&priv->lock, flags);
3750
3751                 scan->suspend_time = 0;
3752                 scan->max_out_time = cpu_to_le32(200 * 1024);
3753                 if (!interval)
3754                         interval = suspend_time;
3755
3756                 extra = (suspend_time / interval) << 22;
3757                 scan_suspend_time = (extra |
3758                     ((suspend_time % interval) * 1024));
3759                 scan->suspend_time = cpu_to_le32(scan_suspend_time);
3760                 IWL_DEBUG_SCAN("suspend_time 0x%X beacon interval %d\n",
3761                                scan_suspend_time, interval);
3762         }
3763
3764         /* We should add the ability for user to lock to PASSIVE ONLY */
3765         if (priv->one_direct_scan) {
3766                 IWL_DEBUG_SCAN
3767                     ("Kicking off one direct scan for '%s'\n",
3768                      iwl4965_escape_essid(priv->direct_ssid,
3769                                       priv->direct_ssid_len));
3770                 scan->direct_scan[0].id = WLAN_EID_SSID;
3771                 scan->direct_scan[0].len = priv->direct_ssid_len;
3772                 memcpy(scan->direct_scan[0].ssid,
3773                        priv->direct_ssid, priv->direct_ssid_len);
3774                 direct_mask = 1;
3775         } else if (!iwl_is_associated(priv) && priv->essid_len) {
3776                 IWL_DEBUG_SCAN
3777                   ("Kicking off one direct scan for '%s' when not associated\n",
3778                    iwl4965_escape_essid(priv->essid, priv->essid_len));
3779                 scan->direct_scan[0].id = WLAN_EID_SSID;
3780                 scan->direct_scan[0].len = priv->essid_len;
3781                 memcpy(scan->direct_scan[0].ssid, priv->essid, priv->essid_len);
3782                 direct_mask = 1;
3783         } else {
3784                 IWL_DEBUG_SCAN("Kicking off one indirect scan.\n");
3785                 direct_mask = 0;
3786         }
3787
3788         scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
3789         scan->tx_cmd.sta_id = priv->hw_params.bcast_sta_id;
3790         scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
3791
3792
3793         switch (priv->scan_bands) {
3794         case 2:
3795                 scan->flags = RXON_FLG_BAND_24G_MSK | RXON_FLG_AUTO_DETECT_MSK;
3796                 scan->tx_cmd.rate_n_flags =
3797                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_1M_PLCP,
3798                                 RATE_MCS_ANT_B_MSK|RATE_MCS_CCK_MSK);
3799
3800                 scan->good_CRC_th = 0;
3801                 band = IEEE80211_BAND_2GHZ;
3802                 break;
3803
3804         case 1:
3805                 scan->tx_cmd.rate_n_flags =
3806                                 iwl4965_hw_set_rate_n_flags(IWL_RATE_6M_PLCP,
3807                                 RATE_MCS_ANT_B_MSK);
3808                 scan->good_CRC_th = IWL_GOOD_CRC_TH;
3809                 band = IEEE80211_BAND_5GHZ;
3810                 break;
3811
3812         default:
3813                 IWL_WARNING("Invalid scan band count\n");
3814                 goto done;
3815         }
3816
3817         /* We don't build a direct scan probe request; the uCode will do
3818          * that based on the direct_mask added to each channel entry */
3819         cmd_len = iwl4965_fill_probe_req(priv, band,
3820                                         (struct ieee80211_mgmt *)scan->data,
3821                                         IWL_MAX_SCAN_SIZE - sizeof(*scan), 0);
3822
3823         scan->tx_cmd.len = cpu_to_le16(cmd_len);
3824         /* select Rx chains */
3825
3826         /* Force use of chains B and C (0x6) for scan Rx.
3827          * Avoid A (0x1) because of its off-channel reception on A-band.
3828          * MIMO is not used here, but value is required to make uCode happy. */
3829         scan->rx_chain = RXON_RX_CHAIN_DRIVER_FORCE_MSK |
3830                         cpu_to_le16((0x7 << RXON_RX_CHAIN_VALID_POS) |
3831                         (0x6 << RXON_RX_CHAIN_FORCE_SEL_POS) |
3832                         (0x7 << RXON_RX_CHAIN_FORCE_MIMO_SEL_POS));
3833
3834         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR)
3835                 scan->filter_flags = RXON_FILTER_PROMISC_MSK;
3836
3837         if (direct_mask)
3838                 scan->channel_count =
3839                         iwl4965_get_channels_for_scan(
3840                                 priv, band, 1, /* active */
3841                                 direct_mask,
3842                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3843         else
3844                 scan->channel_count =
3845                         iwl4965_get_channels_for_scan(
3846                                 priv, band, 0, /* passive */
3847                                 direct_mask,
3848                                 (void *)&scan->data[le16_to_cpu(scan->tx_cmd.len)]);
3849
3850         scan->filter_flags |= (RXON_FILTER_ACCEPT_GRP_MSK |
3851                                RXON_FILTER_BCON_AWARE_MSK);
3852         cmd.len += le16_to_cpu(scan->tx_cmd.len) +
3853             scan->channel_count * sizeof(struct iwl4965_scan_channel);
3854         cmd.data = scan;
3855         scan->len = cpu_to_le16(cmd.len);
3856
3857         set_bit(STATUS_SCAN_HW, &priv->status);
3858         ret = iwl_send_cmd_sync(priv, &cmd);
3859         if (ret)
3860                 goto done;
3861
3862         queue_delayed_work(priv->workqueue, &priv->scan_check,
3863                            IWL_SCAN_CHECK_WATCHDOG);
3864
3865         mutex_unlock(&priv->mutex);
3866         return;
3867
3868  done:
3869         /* inform mac80211 scan aborted */
3870         queue_work(priv->workqueue, &priv->scan_completed);
3871         mutex_unlock(&priv->mutex);
3872 }
3873
3874 static void iwl4965_bg_up(struct work_struct *data)
3875 {
3876         struct iwl_priv *priv = container_of(data, struct iwl_priv, up);
3877
3878         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3879                 return;
3880
3881         mutex_lock(&priv->mutex);
3882         __iwl4965_up(priv);
3883         mutex_unlock(&priv->mutex);
3884 }
3885
3886 static void iwl4965_bg_restart(struct work_struct *data)
3887 {
3888         struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
3889
3890         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3891                 return;
3892
3893         iwl4965_down(priv);
3894         queue_work(priv->workqueue, &priv->up);
3895 }
3896
3897 static void iwl4965_bg_rx_replenish(struct work_struct *data)
3898 {
3899         struct iwl_priv *priv =
3900             container_of(data, struct iwl_priv, rx_replenish);
3901
3902         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3903                 return;
3904
3905         mutex_lock(&priv->mutex);
3906         iwl_rx_replenish(priv);
3907         mutex_unlock(&priv->mutex);
3908 }
3909
3910 #define IWL_DELAY_NEXT_SCAN (HZ*2)
3911
3912 static void iwl4965_post_associate(struct iwl_priv *priv)
3913 {
3914         struct ieee80211_conf *conf = NULL;
3915         int ret = 0;
3916         DECLARE_MAC_BUF(mac);
3917
3918         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
3919                 IWL_ERROR("%s Should not be called in AP mode\n", __FUNCTION__);
3920                 return;
3921         }
3922
3923         IWL_DEBUG_ASSOC("Associated as %d to: %s\n",
3924                         priv->assoc_id,
3925                         print_mac(mac, priv->active_rxon.bssid_addr));
3926
3927
3928         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
3929                 return;
3930
3931
3932         if (!priv->vif || !priv->is_open)
3933                 return;
3934
3935         iwl4965_scan_cancel_timeout(priv, 200);
3936
3937         conf = ieee80211_get_hw_conf(priv->hw);
3938
3939         priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3940         iwl4965_commit_rxon(priv);
3941
3942         memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
3943         iwl4965_setup_rxon_timing(priv);
3944         ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
3945                               sizeof(priv->rxon_timing), &priv->rxon_timing);
3946         if (ret)
3947                 IWL_WARNING("REPLY_RXON_TIMING failed - "
3948                             "Attempting to continue.\n");
3949
3950         priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
3951
3952 #ifdef CONFIG_IWL4965_HT
3953         if (priv->current_ht_config.is_ht)
3954                 iwl_set_rxon_ht(priv, &priv->current_ht_config);
3955 #endif /* CONFIG_IWL4965_HT*/
3956         iwl_set_rxon_chain(priv);
3957         priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
3958
3959         IWL_DEBUG_ASSOC("assoc id %d beacon interval %d\n",
3960                         priv->assoc_id, priv->beacon_int);
3961
3962         if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
3963                 priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
3964         else
3965                 priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
3966
3967         if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
3968                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
3969                         priv->staging_rxon.flags |= RXON_FLG_SHORT_SLOT_MSK;
3970                 else
3971                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3972
3973                 if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
3974                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_SLOT_MSK;
3975
3976         }
3977
3978         iwl4965_commit_rxon(priv);
3979
3980         switch (priv->iw_mode) {
3981         case IEEE80211_IF_TYPE_STA:
3982                 iwl4965_rate_scale_init(priv->hw, IWL_AP_ID);
3983                 break;
3984
3985         case IEEE80211_IF_TYPE_IBSS:
3986
3987                 /* clear out the station table */
3988                 iwlcore_clear_stations_table(priv);
3989
3990                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
3991                 iwl_rxon_add_station(priv, priv->bssid, 0);
3992                 iwl4965_rate_scale_init(priv->hw, IWL_STA_ID);
3993                 iwl4965_send_beacon_cmd(priv);
3994
3995                 break;
3996
3997         default:
3998                 IWL_ERROR("%s Should not be called in %d mode\n",
3999                                 __FUNCTION__, priv->iw_mode);
4000                 break;
4001         }
4002
4003         iwl4965_sequence_reset(priv);
4004
4005         /* Enable Rx differential gain and sensitivity calibrations */
4006         iwl_chain_noise_reset(priv);
4007         priv->start_calib = 1;
4008
4009         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4010                 priv->assoc_station_added = 1;
4011
4012         iwl4965_activate_qos(priv, 0);
4013
4014         iwl_power_update_mode(priv, 0);
4015         /* we have just associated, don't start scan too early */
4016         priv->next_scan_jiffies = jiffies + IWL_DELAY_NEXT_SCAN;
4017 }
4018
4019
4020 static void iwl4965_bg_post_associate(struct work_struct *data)
4021 {
4022         struct iwl_priv *priv = container_of(data, struct iwl_priv,
4023                                              post_associate.work);
4024
4025         mutex_lock(&priv->mutex);
4026         iwl4965_post_associate(priv);
4027         mutex_unlock(&priv->mutex);
4028
4029 }
4030
4031 static void iwl4965_bg_abort_scan(struct work_struct *work)
4032 {
4033         struct iwl_priv *priv = container_of(work, struct iwl_priv, abort_scan);
4034
4035         if (!iwl_is_ready(priv))
4036                 return;
4037
4038         mutex_lock(&priv->mutex);
4039
4040         set_bit(STATUS_SCAN_ABORTING, &priv->status);
4041         iwl4965_send_scan_abort(priv);
4042
4043         mutex_unlock(&priv->mutex);
4044 }
4045
4046 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
4047
4048 static void iwl4965_bg_scan_completed(struct work_struct *work)
4049 {
4050         struct iwl_priv *priv =
4051             container_of(work, struct iwl_priv, scan_completed);
4052
4053         IWL_DEBUG(IWL_DL_SCAN, "SCAN complete scan\n");
4054
4055         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4056                 return;
4057
4058         if (test_bit(STATUS_CONF_PENDING, &priv->status))
4059                 iwl4965_mac_config(priv->hw, ieee80211_get_hw_conf(priv->hw));
4060
4061         ieee80211_scan_completed(priv->hw);
4062
4063         /* Since setting the TXPOWER may have been deferred while
4064          * performing the scan, fire one off */
4065         mutex_lock(&priv->mutex);
4066         iwl4965_hw_reg_send_txpower(priv);
4067         mutex_unlock(&priv->mutex);
4068 }
4069
4070 /*****************************************************************************
4071  *
4072  * mac80211 entry point functions
4073  *
4074  *****************************************************************************/
4075
4076 #define UCODE_READY_TIMEOUT     (2 * HZ)
4077
4078 static int iwl4965_mac_start(struct ieee80211_hw *hw)
4079 {
4080         struct iwl_priv *priv = hw->priv;
4081         int ret;
4082
4083         IWL_DEBUG_MAC80211("enter\n");
4084
4085         if (pci_enable_device(priv->pci_dev)) {
4086                 IWL_ERROR("Fail to pci_enable_device\n");
4087                 return -ENODEV;
4088         }
4089         pci_restore_state(priv->pci_dev);
4090         pci_enable_msi(priv->pci_dev);
4091
4092         ret = request_irq(priv->pci_dev->irq, iwl4965_isr, IRQF_SHARED,
4093                           DRV_NAME, priv);
4094         if (ret) {
4095                 IWL_ERROR("Error allocating IRQ %d\n", priv->pci_dev->irq);
4096                 goto out_disable_msi;
4097         }
4098
4099         /* we should be verifying the device is ready to be opened */
4100         mutex_lock(&priv->mutex);
4101
4102         memset(&priv->staging_rxon, 0, sizeof(struct iwl_rxon_cmd));
4103         /* fetch ucode file from disk, alloc and copy to bus-master buffers ...
4104          * ucode filename and max sizes are card-specific. */
4105
4106         if (!priv->ucode_code.len) {
4107                 ret = iwl4965_read_ucode(priv);
4108                 if (ret) {
4109                         IWL_ERROR("Could not read microcode: %d\n", ret);
4110                         mutex_unlock(&priv->mutex);
4111                         goto out_release_irq;
4112                 }
4113         }
4114
4115         ret = __iwl4965_up(priv);
4116
4117         mutex_unlock(&priv->mutex);
4118
4119         if (ret)
4120                 goto out_release_irq;
4121
4122         IWL_DEBUG_INFO("Start UP work done.\n");
4123
4124         if (test_bit(STATUS_IN_SUSPEND, &priv->status))
4125                 return 0;
4126
4127         /* Wait for START_ALIVE from ucode. Otherwise callbacks from
4128          * mac80211 will not be run successfully. */
4129         ret = wait_event_interruptible_timeout(priv->wait_command_queue,
4130                         test_bit(STATUS_READY, &priv->status),
4131                         UCODE_READY_TIMEOUT);
4132         if (!ret) {
4133                 if (!test_bit(STATUS_READY, &priv->status)) {
4134                         IWL_ERROR("Wait for START_ALIVE timeout after %dms.\n",
4135                                   jiffies_to_msecs(UCODE_READY_TIMEOUT));
4136                         ret = -ETIMEDOUT;
4137                         goto out_release_irq;
4138                 }
4139         }
4140
4141         priv->is_open = 1;
4142         IWL_DEBUG_MAC80211("leave\n");
4143         return 0;
4144
4145 out_release_irq:
4146         free_irq(priv->pci_dev->irq, priv);
4147 out_disable_msi:
4148         pci_disable_msi(priv->pci_dev);
4149         pci_disable_device(priv->pci_dev);
4150         priv->is_open = 0;
4151         IWL_DEBUG_MAC80211("leave - failed\n");
4152         return ret;
4153 }
4154
4155 static void iwl4965_mac_stop(struct ieee80211_hw *hw)
4156 {
4157         struct iwl_priv *priv = hw->priv;
4158
4159         IWL_DEBUG_MAC80211("enter\n");
4160
4161         if (!priv->is_open) {
4162                 IWL_DEBUG_MAC80211("leave - skip\n");
4163                 return;
4164         }
4165
4166         priv->is_open = 0;
4167
4168         if (iwl_is_ready_rf(priv)) {
4169                 /* stop mac, cancel any scan request and clear
4170                  * RXON_FILTER_ASSOC_MSK BIT
4171                  */
4172                 mutex_lock(&priv->mutex);
4173                 iwl4965_scan_cancel_timeout(priv, 100);
4174                 cancel_delayed_work(&priv->post_associate);
4175                 mutex_unlock(&priv->mutex);
4176         }
4177
4178         iwl4965_down(priv);
4179
4180         flush_workqueue(priv->workqueue);
4181         free_irq(priv->pci_dev->irq, priv);
4182         pci_disable_msi(priv->pci_dev);
4183         pci_save_state(priv->pci_dev);
4184         pci_disable_device(priv->pci_dev);
4185
4186         IWL_DEBUG_MAC80211("leave\n");
4187 }
4188
4189 static int iwl4965_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
4190 {
4191         struct iwl_priv *priv = hw->priv;
4192
4193         IWL_DEBUG_MAC80211("enter\n");
4194
4195         if (priv->iw_mode == IEEE80211_IF_TYPE_MNTR) {
4196                 IWL_DEBUG_MAC80211("leave - monitor\n");
4197                 return -1;
4198         }
4199
4200         IWL_DEBUG_TX("dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
4201                      ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
4202
4203         if (iwl_tx_skb(priv, skb))
4204                 dev_kfree_skb_any(skb);
4205
4206         IWL_DEBUG_MAC80211("leave\n");
4207         return 0;
4208 }
4209
4210 static int iwl4965_mac_add_interface(struct ieee80211_hw *hw,
4211                                  struct ieee80211_if_init_conf *conf)
4212 {
4213         struct iwl_priv *priv = hw->priv;
4214         unsigned long flags;
4215         DECLARE_MAC_BUF(mac);
4216
4217         IWL_DEBUG_MAC80211("enter: type %d\n", conf->type);
4218
4219         if (priv->vif) {
4220                 IWL_DEBUG_MAC80211("leave - vif != NULL\n");
4221                 return -EOPNOTSUPP;
4222         }
4223
4224         spin_lock_irqsave(&priv->lock, flags);
4225         priv->vif = conf->vif;
4226
4227         spin_unlock_irqrestore(&priv->lock, flags);
4228
4229         mutex_lock(&priv->mutex);
4230
4231         if (conf->mac_addr) {
4232                 IWL_DEBUG_MAC80211("Set %s\n", print_mac(mac, conf->mac_addr));
4233                 memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
4234         }
4235
4236         if (iwl_is_ready(priv))
4237                 iwl4965_set_mode(priv, conf->type);
4238
4239         mutex_unlock(&priv->mutex);
4240
4241         IWL_DEBUG_MAC80211("leave\n");
4242         return 0;
4243 }
4244
4245 /**
4246  * iwl4965_mac_config - mac80211 config callback
4247  *
4248  * We ignore conf->flags & IEEE80211_CONF_SHORT_SLOT_TIME since it seems to
4249  * be set inappropriately and the driver currently sets the hardware up to
4250  * use it whenever needed.
4251  */
4252 static int iwl4965_mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf)
4253 {
4254         struct iwl_priv *priv = hw->priv;
4255         const struct iwl_channel_info *ch_info;
4256         unsigned long flags;
4257         int ret = 0;
4258
4259         mutex_lock(&priv->mutex);
4260         IWL_DEBUG_MAC80211("enter to channel %d\n", conf->channel->hw_value);
4261
4262         priv->add_radiotap = !!(conf->flags & IEEE80211_CONF_RADIOTAP);
4263
4264         if (!iwl_is_ready(priv)) {
4265                 IWL_DEBUG_MAC80211("leave - not ready\n");
4266                 ret = -EIO;
4267                 goto out;
4268         }
4269
4270         if (unlikely(!priv->cfg->mod_params->disable_hw_scan &&
4271                      test_bit(STATUS_SCANNING, &priv->status))) {
4272                 IWL_DEBUG_MAC80211("leave - scanning\n");
4273                 set_bit(STATUS_CONF_PENDING, &priv->status);
4274                 mutex_unlock(&priv->mutex);
4275                 return 0;
4276         }
4277
4278         spin_lock_irqsave(&priv->lock, flags);
4279
4280         ch_info = iwl_get_channel_info(priv, conf->channel->band,
4281                         ieee80211_frequency_to_channel(conf->channel->center_freq));
4282         if (!is_channel_valid(ch_info)) {
4283                 IWL_DEBUG_MAC80211("leave - invalid channel\n");
4284                 spin_unlock_irqrestore(&priv->lock, flags);
4285                 ret = -EINVAL;
4286                 goto out;
4287         }
4288
4289 #ifdef CONFIG_IWL4965_HT
4290         /* if we are switching from ht to 2.4 clear flags
4291          * from any ht related info since 2.4 does not
4292          * support ht */
4293         if ((le16_to_cpu(priv->staging_rxon.channel) != conf->channel->hw_value)
4294 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4295             && !(conf->flags & IEEE80211_CONF_CHANNEL_SWITCH)
4296 #endif
4297         )
4298                 priv->staging_rxon.flags = 0;
4299 #endif /* CONFIG_IWL4965_HT */
4300
4301         iwl_set_rxon_channel(priv, conf->channel->band,
4302                 ieee80211_frequency_to_channel(conf->channel->center_freq));
4303
4304         iwl4965_set_flags_for_phymode(priv, conf->channel->band);
4305
4306         /* The list of supported rates and rate mask can be different
4307          * for each band; since the band may have changed, reset
4308          * the rate mask to what mac80211 lists */
4309         iwl4965_set_rate(priv);
4310
4311         spin_unlock_irqrestore(&priv->lock, flags);
4312
4313 #ifdef IEEE80211_CONF_CHANNEL_SWITCH
4314         if (conf->flags & IEEE80211_CONF_CHANNEL_SWITCH) {
4315                 iwl4965_hw_channel_switch(priv, conf->channel);
4316                 goto out;
4317         }
4318 #endif
4319
4320         if (priv->cfg->ops->lib->radio_kill_sw)
4321                 priv->cfg->ops->lib->radio_kill_sw(priv, !conf->radio_enabled);
4322
4323         if (!conf->radio_enabled) {
4324                 IWL_DEBUG_MAC80211("leave - radio disabled\n");
4325                 goto out;
4326         }
4327
4328         if (iwl_is_rfkill(priv)) {
4329                 IWL_DEBUG_MAC80211("leave - RF kill\n");
4330                 ret = -EIO;
4331                 goto out;
4332         }
4333
4334         iwl4965_set_rate(priv);
4335
4336         if (memcmp(&priv->active_rxon,
4337                    &priv->staging_rxon, sizeof(priv->staging_rxon)))
4338                 iwl4965_commit_rxon(priv);
4339         else
4340                 IWL_DEBUG_INFO("No re-sending same RXON configuration.\n");
4341
4342         IWL_DEBUG_MAC80211("leave\n");
4343
4344 out:
4345         clear_bit(STATUS_CONF_PENDING, &priv->status);
4346         mutex_unlock(&priv->mutex);
4347         return ret;
4348 }
4349
4350 static void iwl4965_config_ap(struct iwl_priv *priv)
4351 {
4352         int ret = 0;
4353
4354         if (test_bit(STATUS_EXIT_PENDING, &priv->status))
4355                 return;
4356
4357         /* The following should be done only at AP bring up */
4358         if ((priv->active_rxon.filter_flags & RXON_FILTER_ASSOC_MSK) == 0) {
4359
4360                 /* RXON - unassoc (to set timing command) */
4361                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4362                 iwl4965_commit_rxon(priv);
4363
4364                 /* RXON Timing */
4365                 memset(&priv->rxon_timing, 0, sizeof(struct iwl4965_rxon_time_cmd));
4366                 iwl4965_setup_rxon_timing(priv);
4367                 ret = iwl_send_cmd_pdu(priv, REPLY_RXON_TIMING,
4368                                 sizeof(priv->rxon_timing), &priv->rxon_timing);
4369                 if (ret)
4370                         IWL_WARNING("REPLY_RXON_TIMING failed - "
4371                                         "Attempting to continue.\n");
4372
4373                 iwl_set_rxon_chain(priv);
4374
4375                 /* FIXME: what should be the assoc_id for AP? */
4376                 priv->staging_rxon.assoc_id = cpu_to_le16(priv->assoc_id);
4377                 if (priv->assoc_capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
4378                         priv->staging_rxon.flags |=
4379                                 RXON_FLG_SHORT_PREAMBLE_MSK;
4380                 else
4381                         priv->staging_rxon.flags &=
4382                                 ~RXON_FLG_SHORT_PREAMBLE_MSK;
4383
4384                 if (priv->staging_rxon.flags & RXON_FLG_BAND_24G_MSK) {
4385                         if (priv->assoc_capability &
4386                                 WLAN_CAPABILITY_SHORT_SLOT_TIME)
4387                                 priv->staging_rxon.flags |=
4388                                         RXON_FLG_SHORT_SLOT_MSK;
4389                         else
4390                                 priv->staging_rxon.flags &=
4391                                         ~RXON_FLG_SHORT_SLOT_MSK;
4392
4393                         if (priv->iw_mode == IEEE80211_IF_TYPE_IBSS)
4394                                 priv->staging_rxon.flags &=
4395                                         ~RXON_FLG_SHORT_SLOT_MSK;
4396                 }
4397                 /* restore RXON assoc */
4398                 priv->staging_rxon.filter_flags |= RXON_FILTER_ASSOC_MSK;
4399                 iwl4965_commit_rxon(priv);
4400                 iwl4965_activate_qos(priv, 1);
4401                 iwl_rxon_add_station(priv, iwl_bcast_addr, 0);
4402         }
4403         iwl4965_send_beacon_cmd(priv);
4404
4405         /* FIXME - we need to add code here to detect a totally new
4406          * configuration, reset the AP, unassoc, rxon timing, assoc,
4407          * clear sta table, add BCAST sta... */
4408 }
4409
4410 static int iwl4965_mac_config_interface(struct ieee80211_hw *hw,
4411                                         struct ieee80211_vif *vif,
4412                                     struct ieee80211_if_conf *conf)
4413 {
4414         struct iwl_priv *priv = hw->priv;
4415         DECLARE_MAC_BUF(mac);
4416         unsigned long flags;
4417         int rc;
4418
4419         if (conf == NULL)
4420                 return -EIO;
4421
4422         if (priv->vif != vif) {
4423                 IWL_DEBUG_MAC80211("leave - priv->vif != vif\n");
4424                 return 0;
4425         }
4426
4427         if ((priv->iw_mode == IEEE80211_IF_TYPE_AP) &&
4428             (!conf->beacon || !conf->ssid_len)) {
4429                 IWL_DEBUG_MAC80211
4430                     ("Leaving in AP mode because HostAPD is not ready.\n");
4431                 return 0;
4432         }
4433
4434         if (!iwl_is_alive(priv))
4435                 return -EAGAIN;
4436
4437         mutex_lock(&priv->mutex);
4438
4439         if (conf->bssid)
4440                 IWL_DEBUG_MAC80211("bssid: %s\n",
4441                                    print_mac(mac, conf->bssid));
4442
4443 /*
4444  * very dubious code was here; the probe filtering flag is never set:
4445  *
4446         if (unlikely(test_bit(STATUS_SCANNING, &priv->status)) &&
4447             !(priv->hw->flags & IEEE80211_HW_NO_PROBE_FILTERING)) {
4448  */
4449
4450         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
4451                 if (!conf->bssid) {
4452                         conf->bssid = priv->mac_addr;
4453                         memcpy(priv->bssid, priv->mac_addr, ETH_ALEN);
4454                         IWL_DEBUG_MAC80211("bssid was set to: %s\n",
4455                                            print_mac(mac, conf->bssid));
4456                 }
4457                 if (priv->ibss_beacon)
4458                         dev_kfree_skb(priv->ibss_beacon);
4459
4460                 priv->ibss_beacon = conf->beacon;
4461         }
4462
4463         if (iwl_is_rfkill(priv))
4464                 goto done;
4465
4466         if (conf->bssid && !is_zero_ether_addr(conf->bssid) &&
4467             !is_multicast_ether_addr(conf->bssid)) {
4468                 /* If there is currently a HW scan going on in the background
4469                  * then we need to cancel it else the RXON below will fail. */
4470                 if (iwl4965_scan_cancel_timeout(priv, 100)) {
4471                         IWL_WARNING("Aborted scan still in progress "
4472                                     "after 100ms\n");
4473                         IWL_DEBUG_MAC80211("leaving - scan abort failed.\n");
4474                         mutex_unlock(&priv->mutex);
4475                         return -EAGAIN;
4476                 }
4477                 memcpy(priv->staging_rxon.bssid_addr, conf->bssid, ETH_ALEN);
4478
4479                 /* TODO: Audit driver for usage of these members and see
4480                  * if mac80211 deprecates them (priv->bssid looks like it
4481                  * shouldn't be there, but I haven't scanned the IBSS code
4482                  * to verify) - jpk */
4483                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
4484
4485                 if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4486                         iwl4965_config_ap(priv);
4487                 else {
4488                         rc = iwl4965_commit_rxon(priv);
4489                         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA) && rc)
4490                                 iwl_rxon_add_station(
4491                                         priv, priv->active_rxon.bssid_addr, 1);
4492                 }
4493
4494         } else {
4495                 iwl4965_scan_cancel_timeout(priv, 100);
4496                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4497                 iwl4965_commit_rxon(priv);
4498         }
4499
4500  done:
4501         spin_lock_irqsave(&priv->lock, flags);
4502         if (!conf->ssid_len)
4503                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4504         else
4505                 memcpy(priv->essid, conf->ssid, conf->ssid_len);
4506
4507         priv->essid_len = conf->ssid_len;
4508         spin_unlock_irqrestore(&priv->lock, flags);
4509
4510         IWL_DEBUG_MAC80211("leave\n");
4511         mutex_unlock(&priv->mutex);
4512
4513         return 0;
4514 }
4515
4516 static void iwl4965_configure_filter(struct ieee80211_hw *hw,
4517                                  unsigned int changed_flags,
4518                                  unsigned int *total_flags,
4519                                  int mc_count, struct dev_addr_list *mc_list)
4520 {
4521         /*
4522          * XXX: dummy
4523          * see also iwl4965_connection_init_rx_config
4524          */
4525         struct iwl_priv *priv = hw->priv;
4526         int new_flags = 0;
4527         if (changed_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4528                 if (*total_flags & (FIF_PROMISC_IN_BSS | FIF_OTHER_BSS)) {
4529                         IWL_DEBUG_MAC80211("Enter: type %d (0x%x, 0x%x)\n",
4530                                            IEEE80211_IF_TYPE_MNTR,
4531                                            changed_flags, *total_flags);
4532                         /* queue work 'cuz mac80211 is holding a lock which
4533                          * prevents us from issuing (synchronous) f/w cmds */
4534                         queue_work(priv->workqueue, &priv->set_monitor);
4535                         new_flags &= FIF_PROMISC_IN_BSS |
4536                                      FIF_OTHER_BSS |
4537                                      FIF_ALLMULTI;
4538                 }
4539         }
4540         *total_flags = new_flags;
4541 }
4542
4543 static void iwl4965_mac_remove_interface(struct ieee80211_hw *hw,
4544                                      struct ieee80211_if_init_conf *conf)
4545 {
4546         struct iwl_priv *priv = hw->priv;
4547
4548         IWL_DEBUG_MAC80211("enter\n");
4549
4550         mutex_lock(&priv->mutex);
4551
4552         if (iwl_is_ready_rf(priv)) {
4553                 iwl4965_scan_cancel_timeout(priv, 100);
4554                 cancel_delayed_work(&priv->post_associate);
4555                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4556                 iwl4965_commit_rxon(priv);
4557         }
4558         if (priv->vif == conf->vif) {
4559                 priv->vif = NULL;
4560                 memset(priv->bssid, 0, ETH_ALEN);
4561                 memset(priv->essid, 0, IW_ESSID_MAX_SIZE);
4562                 priv->essid_len = 0;
4563         }
4564         mutex_unlock(&priv->mutex);
4565
4566         IWL_DEBUG_MAC80211("leave\n");
4567
4568 }
4569
4570 #define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
4571 static void iwl4965_bss_info_changed(struct ieee80211_hw *hw,
4572                                      struct ieee80211_vif *vif,
4573                                      struct ieee80211_bss_conf *bss_conf,
4574                                      u32 changes)
4575 {
4576         struct iwl_priv *priv = hw->priv;
4577
4578         IWL_DEBUG_MAC80211("changes = 0x%X\n", changes);
4579
4580         if (changes & BSS_CHANGED_ERP_PREAMBLE) {
4581                 IWL_DEBUG_MAC80211("ERP_PREAMBLE %d\n",
4582                                    bss_conf->use_short_preamble);
4583                 if (bss_conf->use_short_preamble)
4584                         priv->staging_rxon.flags |= RXON_FLG_SHORT_PREAMBLE_MSK;
4585                 else
4586                         priv->staging_rxon.flags &= ~RXON_FLG_SHORT_PREAMBLE_MSK;
4587         }
4588
4589         if (changes & BSS_CHANGED_ERP_CTS_PROT) {
4590                 IWL_DEBUG_MAC80211("ERP_CTS %d\n", bss_conf->use_cts_prot);
4591                 if (bss_conf->use_cts_prot && (priv->band != IEEE80211_BAND_5GHZ))
4592                         priv->staging_rxon.flags |= RXON_FLG_TGG_PROTECT_MSK;
4593                 else
4594                         priv->staging_rxon.flags &= ~RXON_FLG_TGG_PROTECT_MSK;
4595         }
4596
4597         if (changes & BSS_CHANGED_HT) {
4598                 IWL_DEBUG_MAC80211("HT %d\n", bss_conf->assoc_ht);
4599                 iwl4965_ht_conf(priv, bss_conf);
4600                 iwl_set_rxon_chain(priv);
4601         }
4602
4603         if (changes & BSS_CHANGED_ASSOC) {
4604                 IWL_DEBUG_MAC80211("ASSOC %d\n", bss_conf->assoc);
4605                 /* This should never happen as this function should
4606                  * never be called from interrupt context. */
4607                 if (WARN_ON_ONCE(in_interrupt()))
4608                         return;
4609                 if (bss_conf->assoc) {
4610                         priv->assoc_id = bss_conf->aid;
4611                         priv->beacon_int = bss_conf->beacon_int;
4612                         priv->timestamp = bss_conf->timestamp;
4613                         priv->assoc_capability = bss_conf->assoc_capability;
4614                         priv->next_scan_jiffies = jiffies +
4615                                         IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
4616                         mutex_lock(&priv->mutex);
4617                         iwl4965_post_associate(priv);
4618                         mutex_unlock(&priv->mutex);
4619                 } else {
4620                         priv->assoc_id = 0;
4621                         IWL_DEBUG_MAC80211("DISASSOC %d\n", bss_conf->assoc);
4622                 }
4623         } else if (changes && iwl_is_associated(priv) && priv->assoc_id) {
4624                         IWL_DEBUG_MAC80211("Associated Changes %d\n", changes);
4625                         iwl_send_rxon_assoc(priv);
4626         }
4627
4628 }
4629
4630 static int iwl4965_mac_hw_scan(struct ieee80211_hw *hw, u8 *ssid, size_t len)
4631 {
4632         int rc = 0;
4633         unsigned long flags;
4634         struct iwl_priv *priv = hw->priv;
4635
4636         IWL_DEBUG_MAC80211("enter\n");
4637
4638         mutex_lock(&priv->mutex);
4639         spin_lock_irqsave(&priv->lock, flags);
4640
4641         if (!iwl_is_ready_rf(priv)) {
4642                 rc = -EIO;
4643                 IWL_DEBUG_MAC80211("leave - not ready or exit pending\n");
4644                 goto out_unlock;
4645         }
4646
4647         if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {    /* APs don't scan */
4648                 rc = -EIO;
4649                 IWL_ERROR("ERROR: APs don't scan\n");
4650                 goto out_unlock;
4651         }
4652
4653         /* we don't schedule scan within next_scan_jiffies period */
4654         if (priv->next_scan_jiffies &&
4655                         time_after(priv->next_scan_jiffies, jiffies)) {
4656                 rc = -EAGAIN;
4657                 goto out_unlock;
4658         }
4659         /* if we just finished scan ask for delay */
4660         if (priv->last_scan_jiffies && time_after(priv->last_scan_jiffies +
4661                                 IWL_DELAY_NEXT_SCAN, jiffies)) {
4662                 rc = -EAGAIN;
4663                 goto out_unlock;
4664         }
4665         if (len) {
4666                 IWL_DEBUG_SCAN("direct scan for %s [%d]\n ",
4667                                iwl4965_escape_essid(ssid, len), (int)len);
4668
4669                 priv->one_direct_scan = 1;
4670                 priv->direct_ssid_len = (u8)
4671                     min((u8) len, (u8) IW_ESSID_MAX_SIZE);
4672                 memcpy(priv->direct_ssid, ssid, priv->direct_ssid_len);
4673         } else
4674                 priv->one_direct_scan = 0;
4675
4676         rc = iwl4965_scan_initiate(priv);
4677
4678         IWL_DEBUG_MAC80211("leave\n");
4679
4680 out_unlock:
4681         spin_unlock_irqrestore(&priv->lock, flags);
4682         mutex_unlock(&priv->mutex);
4683
4684         return rc;
4685 }
4686
4687 static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
4688                         struct ieee80211_key_conf *keyconf, const u8 *addr,
4689                         u32 iv32, u16 *phase1key)
4690 {
4691         struct iwl_priv *priv = hw->priv;
4692         u8 sta_id = IWL_INVALID_STATION;
4693         unsigned long flags;
4694         __le16 key_flags = 0;
4695         int i;
4696         DECLARE_MAC_BUF(mac);
4697
4698         IWL_DEBUG_MAC80211("enter\n");
4699
4700         sta_id = iwl_find_station(priv, addr);
4701         if (sta_id == IWL_INVALID_STATION) {
4702                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4703                                    print_mac(mac, addr));
4704                 return;
4705         }
4706
4707         iwl4965_scan_cancel_timeout(priv, 100);
4708
4709         key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
4710         key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
4711         key_flags &= ~STA_KEY_FLG_INVALID;
4712
4713         if (sta_id == priv->hw_params.bcast_sta_id)
4714                 key_flags |= STA_KEY_MULTICAST_MSK;
4715
4716         spin_lock_irqsave(&priv->sta_lock, flags);
4717
4718         priv->stations[sta_id].sta.key.key_flags = key_flags;
4719         priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
4720
4721         for (i = 0; i < 5; i++)
4722                 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
4723                         cpu_to_le16(phase1key[i]);
4724
4725         priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
4726         priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
4727
4728         iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
4729
4730         spin_unlock_irqrestore(&priv->sta_lock, flags);
4731
4732         IWL_DEBUG_MAC80211("leave\n");
4733 }
4734
4735 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
4736                            const u8 *local_addr, const u8 *addr,
4737                            struct ieee80211_key_conf *key)
4738 {
4739         struct iwl_priv *priv = hw->priv;
4740         DECLARE_MAC_BUF(mac);
4741         int ret = 0;
4742         u8 sta_id = IWL_INVALID_STATION;
4743         u8 is_default_wep_key = 0;
4744
4745         IWL_DEBUG_MAC80211("enter\n");
4746
4747         if (priv->hw_params.sw_crypto) {
4748                 IWL_DEBUG_MAC80211("leave - hwcrypto disabled\n");
4749                 return -EOPNOTSUPP;
4750         }
4751
4752         if (is_zero_ether_addr(addr))
4753                 /* only support pairwise keys */
4754                 return -EOPNOTSUPP;
4755
4756         sta_id = iwl_find_station(priv, addr);
4757         if (sta_id == IWL_INVALID_STATION) {
4758                 IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
4759                                    print_mac(mac, addr));
4760                 return -EINVAL;
4761
4762         }
4763
4764         mutex_lock(&priv->mutex);
4765         iwl4965_scan_cancel_timeout(priv, 100);
4766         mutex_unlock(&priv->mutex);
4767
4768         /* If we are getting WEP group key and we didn't receive any key mapping
4769          * so far, we are in legacy wep mode (group key only), otherwise we are
4770          * in 1X mode.
4771          * In legacy wep mode, we use another host command to the uCode */
4772         if (key->alg == ALG_WEP && sta_id == priv->hw_params.bcast_sta_id &&
4773                 priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4774                 if (cmd == SET_KEY)
4775                         is_default_wep_key = !priv->key_mapping_key;
4776                 else
4777                         is_default_wep_key =
4778                                         (key->hw_key_idx == HW_KEY_DEFAULT);
4779         }
4780
4781         switch (cmd) {
4782         case SET_KEY:
4783                 if (is_default_wep_key)
4784                         ret = iwl_set_default_wep_key(priv, key);
4785                 else
4786                         ret = iwl_set_dynamic_key(priv, key, sta_id);
4787
4788                 IWL_DEBUG_MAC80211("enable hwcrypto key\n");
4789                 break;
4790         case DISABLE_KEY:
4791                 if (is_default_wep_key)
4792                         ret = iwl_remove_default_wep_key(priv, key);
4793                 else
4794                         ret = iwl_remove_dynamic_key(priv, key, sta_id);
4795
4796                 IWL_DEBUG_MAC80211("disable hwcrypto key\n");
4797                 break;
4798         default:
4799                 ret = -EINVAL;
4800         }
4801
4802         IWL_DEBUG_MAC80211("leave\n");
4803
4804         return ret;
4805 }
4806
4807 static int iwl4965_mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
4808                            const struct ieee80211_tx_queue_params *params)
4809 {
4810         struct iwl_priv *priv = hw->priv;
4811         unsigned long flags;
4812         int q;
4813
4814         IWL_DEBUG_MAC80211("enter\n");
4815
4816         if (!iwl_is_ready_rf(priv)) {
4817                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4818                 return -EIO;
4819         }
4820
4821         if (queue >= AC_NUM) {
4822                 IWL_DEBUG_MAC80211("leave - queue >= AC_NUM %d\n", queue);
4823                 return 0;
4824         }
4825
4826         if (!priv->qos_data.qos_enable) {
4827                 priv->qos_data.qos_active = 0;
4828                 IWL_DEBUG_MAC80211("leave - qos not enabled\n");
4829                 return 0;
4830         }
4831         q = AC_NUM - 1 - queue;
4832
4833         spin_lock_irqsave(&priv->lock, flags);
4834
4835         priv->qos_data.def_qos_parm.ac[q].cw_min = cpu_to_le16(params->cw_min);
4836         priv->qos_data.def_qos_parm.ac[q].cw_max = cpu_to_le16(params->cw_max);
4837         priv->qos_data.def_qos_parm.ac[q].aifsn = params->aifs;
4838         priv->qos_data.def_qos_parm.ac[q].edca_txop =
4839                         cpu_to_le16((params->txop * 32));
4840
4841         priv->qos_data.def_qos_parm.ac[q].reserved1 = 0;
4842         priv->qos_data.qos_active = 1;
4843
4844         spin_unlock_irqrestore(&priv->lock, flags);
4845
4846         mutex_lock(&priv->mutex);
4847         if (priv->iw_mode == IEEE80211_IF_TYPE_AP)
4848                 iwl4965_activate_qos(priv, 1);
4849         else if (priv->assoc_id && iwl_is_associated(priv))
4850                 iwl4965_activate_qos(priv, 0);
4851
4852         mutex_unlock(&priv->mutex);
4853
4854         IWL_DEBUG_MAC80211("leave\n");
4855         return 0;
4856 }
4857
4858 static int iwl4965_mac_get_tx_stats(struct ieee80211_hw *hw,
4859                                 struct ieee80211_tx_queue_stats *stats)
4860 {
4861         struct iwl_priv *priv = hw->priv;
4862         int i, avail;
4863         struct iwl_tx_queue *txq;
4864         struct iwl_queue *q;
4865         unsigned long flags;
4866
4867         IWL_DEBUG_MAC80211("enter\n");
4868
4869         if (!iwl_is_ready_rf(priv)) {
4870                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4871                 return -EIO;
4872         }
4873
4874         spin_lock_irqsave(&priv->lock, flags);
4875
4876         for (i = 0; i < AC_NUM; i++) {
4877                 txq = &priv->txq[i];
4878                 q = &txq->q;
4879                 avail = iwl_queue_space(q);
4880
4881                 stats[i].len = q->n_window - avail;
4882                 stats[i].limit = q->n_window - q->high_mark;
4883                 stats[i].count = q->n_window;
4884
4885         }
4886         spin_unlock_irqrestore(&priv->lock, flags);
4887
4888         IWL_DEBUG_MAC80211("leave\n");
4889
4890         return 0;
4891 }
4892
4893 static int iwl4965_mac_get_stats(struct ieee80211_hw *hw,
4894                              struct ieee80211_low_level_stats *stats)
4895 {
4896         struct iwl_priv *priv = hw->priv;
4897
4898         priv = hw->priv;
4899         IWL_DEBUG_MAC80211("enter\n");
4900         IWL_DEBUG_MAC80211("leave\n");
4901
4902         return 0;
4903 }
4904
4905 static u64 iwl4965_mac_get_tsf(struct ieee80211_hw *hw)
4906 {
4907         struct iwl_priv *priv;
4908
4909         priv = hw->priv;
4910         IWL_DEBUG_MAC80211("enter\n");
4911         IWL_DEBUG_MAC80211("leave\n");
4912
4913         return 0;
4914 }
4915
4916 static void iwl4965_mac_reset_tsf(struct ieee80211_hw *hw)
4917 {
4918         struct iwl_priv *priv = hw->priv;
4919         unsigned long flags;
4920
4921         mutex_lock(&priv->mutex);
4922         IWL_DEBUG_MAC80211("enter\n");
4923
4924         priv->lq_mngr.lq_ready = 0;
4925 #ifdef CONFIG_IWL4965_HT
4926         spin_lock_irqsave(&priv->lock, flags);
4927         memset(&priv->current_ht_config, 0, sizeof(struct iwl_ht_info));
4928         spin_unlock_irqrestore(&priv->lock, flags);
4929 #endif /* CONFIG_IWL4965_HT */
4930
4931         iwl_reset_qos(priv);
4932
4933         cancel_delayed_work(&priv->post_associate);
4934
4935         spin_lock_irqsave(&priv->lock, flags);
4936         priv->assoc_id = 0;
4937         priv->assoc_capability = 0;
4938         priv->assoc_station_added = 0;
4939
4940         /* new association get rid of ibss beacon skb */
4941         if (priv->ibss_beacon)
4942                 dev_kfree_skb(priv->ibss_beacon);
4943
4944         priv->ibss_beacon = NULL;
4945
4946         priv->beacon_int = priv->hw->conf.beacon_int;
4947         priv->timestamp = 0;
4948         if ((priv->iw_mode == IEEE80211_IF_TYPE_STA))
4949                 priv->beacon_int = 0;
4950
4951         spin_unlock_irqrestore(&priv->lock, flags);
4952
4953         if (!iwl_is_ready_rf(priv)) {
4954                 IWL_DEBUG_MAC80211("leave - not ready\n");
4955                 mutex_unlock(&priv->mutex);
4956                 return;
4957         }
4958
4959         /* we are restarting association process
4960          * clear RXON_FILTER_ASSOC_MSK bit
4961          */
4962         if (priv->iw_mode != IEEE80211_IF_TYPE_AP) {
4963                 iwl4965_scan_cancel_timeout(priv, 100);
4964                 priv->staging_rxon.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
4965                 iwl4965_commit_rxon(priv);
4966         }
4967
4968         iwl_power_update_mode(priv, 0);
4969
4970         /* Per mac80211.h: This is only used in IBSS mode... */
4971         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
4972
4973                 IWL_DEBUG_MAC80211("leave - not in IBSS\n");
4974                 mutex_unlock(&priv->mutex);
4975                 return;
4976         }
4977
4978         iwl4965_set_rate(priv);
4979
4980         mutex_unlock(&priv->mutex);
4981
4982         IWL_DEBUG_MAC80211("leave\n");
4983 }
4984
4985 static int iwl4965_mac_beacon_update(struct ieee80211_hw *hw, struct sk_buff *skb)
4986 {
4987         struct iwl_priv *priv = hw->priv;
4988         unsigned long flags;
4989
4990         mutex_lock(&priv->mutex);
4991         IWL_DEBUG_MAC80211("enter\n");
4992
4993         if (!iwl_is_ready_rf(priv)) {
4994                 IWL_DEBUG_MAC80211("leave - RF not ready\n");
4995                 mutex_unlock(&priv->mutex);
4996                 return -EIO;
4997         }
4998
4999         if (priv->iw_mode != IEEE80211_IF_TYPE_IBSS) {
5000                 IWL_DEBUG_MAC80211("leave - not IBSS\n");
5001                 mutex_unlock(&priv->mutex);
5002                 return -EIO;
5003         }
5004
5005         spin_lock_irqsave(&priv->lock, flags);
5006
5007         if (priv->ibss_beacon)
5008                 dev_kfree_skb(priv->ibss_beacon);
5009
5010         priv->ibss_beacon = skb;
5011
5012         priv->assoc_id = 0;
5013
5014         IWL_DEBUG_MAC80211("leave\n");
5015         spin_unlock_irqrestore(&priv->lock, flags);
5016
5017         iwl_reset_qos(priv);
5018
5019         queue_work(priv->workqueue, &priv->post_associate.work);
5020
5021         mutex_unlock(&priv->mutex);
5022
5023         return 0;
5024 }
5025
5026 /*****************************************************************************
5027  *
5028  * sysfs attributes
5029  *
5030  *****************************************************************************/
5031
5032 #ifdef CONFIG_IWLWIFI_DEBUG
5033
5034 /*
5035  * The following adds a new attribute to the sysfs representation
5036  * of this device driver (i.e. a new file in /sys/bus/pci/drivers/iwl/)
5037  * used for controlling the debug level.
5038  *
5039  * See the level definitions in iwl for details.
5040  */
5041
5042 static ssize_t show_debug_level(struct device *d,
5043                                 struct device_attribute *attr, char *buf)
5044 {
5045         struct iwl_priv *priv = d->driver_data;
5046
5047         return sprintf(buf, "0x%08X\n", priv->debug_level);
5048 }
5049 static ssize_t store_debug_level(struct device *d,
5050                                 struct device_attribute *attr,
5051                                  const char *buf, size_t count)
5052 {
5053         struct iwl_priv *priv = d->driver_data;
5054         char *p = (char *)buf;
5055         u32 val;
5056
5057         val = simple_strtoul(p, &p, 0);
5058         if (p == buf)
5059                 printk(KERN_INFO DRV_NAME
5060                        ": %s is not in hex or decimal form.\n", buf);
5061         else
5062                 priv->debug_level = val;
5063
5064         return strnlen(buf, count);
5065 }
5066
5067 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
5068                         show_debug_level, store_debug_level);
5069
5070
5071 #endif /* CONFIG_IWLWIFI_DEBUG */
5072
5073
5074 static ssize_t show_version(struct device *d,
5075                                 struct device_attribute *attr, char *buf)
5076 {
5077         struct iwl_priv *priv = d->driver_data;
5078         struct iwl_alive_resp *palive = &priv->card_alive;
5079
5080         if (palive->is_valid)
5081                 return sprintf(buf, "fw version: 0x%01X.0x%01X.0x%01X.0x%01X\n"
5082                                     "fw type: 0x%01X 0x%01X\n",
5083                                 palive->ucode_major, palive->ucode_minor,
5084                                 palive->sw_rev[0], palive->sw_rev[1],
5085                                 palive->ver_type, palive->ver_subtype);
5086
5087         else
5088                 return sprintf(buf, "fw not loaded\n");
5089 }
5090
5091 static DEVICE_ATTR(version, S_IWUSR | S_IRUGO, show_version, NULL);
5092
5093 static ssize_t show_temperature(struct device *d,
5094                                 struct device_attribute *attr, char *buf)
5095 {
5096         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5097
5098         if (!iwl_is_alive(priv))
5099                 return -EAGAIN;
5100
5101         return sprintf(buf, "%d\n", iwl4965_hw_get_temperature(priv));
5102 }
5103
5104 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
5105
5106 static ssize_t show_rs_window(struct device *d,
5107                               struct device_attribute *attr,
5108                               char *buf)
5109 {
5110         struct iwl_priv *priv = d->driver_data;
5111         return iwl4965_fill_rs_info(priv->hw, buf, IWL_AP_ID);
5112 }
5113 static DEVICE_ATTR(rs_window, S_IRUGO, show_rs_window, NULL);
5114
5115 static ssize_t show_tx_power(struct device *d,
5116                              struct device_attribute *attr, char *buf)
5117 {
5118         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5119         return sprintf(buf, "%d\n", priv->user_txpower_limit);
5120 }
5121
5122 static ssize_t store_tx_power(struct device *d,
5123                               struct device_attribute *attr,
5124                               const char *buf, size_t count)
5125 {
5126         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5127         char *p = (char *)buf;
5128         u32 val;
5129
5130         val = simple_strtoul(p, &p, 10);
5131         if (p == buf)
5132                 printk(KERN_INFO DRV_NAME
5133                        ": %s is not in decimal form.\n", buf);
5134         else
5135                 iwl4965_hw_reg_set_txpower(priv, val);
5136
5137         return count;
5138 }
5139
5140 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
5141
5142 static ssize_t show_flags(struct device *d,
5143                           struct device_attribute *attr, char *buf)
5144 {
5145         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5146
5147         return sprintf(buf, "0x%04X\n", priv->active_rxon.flags);
5148 }
5149
5150 static ssize_t store_flags(struct device *d,
5151                            struct device_attribute *attr,
5152                            const char *buf, size_t count)
5153 {
5154         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5155         u32 flags = simple_strtoul(buf, NULL, 0);
5156
5157         mutex_lock(&priv->mutex);
5158         if (le32_to_cpu(priv->staging_rxon.flags) != flags) {
5159                 /* Cancel any currently running scans... */
5160                 if (iwl4965_scan_cancel_timeout(priv, 100))
5161                         IWL_WARNING("Could not cancel scan.\n");
5162                 else {
5163                         IWL_DEBUG_INFO("Committing rxon.flags = 0x%04X\n",
5164                                        flags);
5165                         priv->staging_rxon.flags = cpu_to_le32(flags);
5166                         iwl4965_commit_rxon(priv);
5167                 }
5168         }
5169         mutex_unlock(&priv->mutex);
5170
5171         return count;
5172 }
5173
5174 static DEVICE_ATTR(flags, S_IWUSR | S_IRUGO, show_flags, store_flags);
5175
5176 static ssize_t show_filter_flags(struct device *d,
5177                                  struct device_attribute *attr, char *buf)
5178 {
5179         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5180
5181         return sprintf(buf, "0x%04X\n",
5182                 le32_to_cpu(priv->active_rxon.filter_flags));
5183 }
5184
5185 static ssize_t store_filter_flags(struct device *d,
5186                                   struct device_attribute *attr,
5187                                   const char *buf, size_t count)
5188 {
5189         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5190         u32 filter_flags = simple_strtoul(buf, NULL, 0);
5191
5192         mutex_lock(&priv->mutex);
5193         if (le32_to_cpu(priv->staging_rxon.filter_flags) != filter_flags) {
5194                 /* Cancel any currently running scans... */
5195                 if (iwl4965_scan_cancel_timeout(priv, 100))
5196                         IWL_WARNING("Could not cancel scan.\n");
5197                 else {
5198                         IWL_DEBUG_INFO("Committing rxon.filter_flags = "
5199                                        "0x%04X\n", filter_flags);
5200                         priv->staging_rxon.filter_flags =
5201                                 cpu_to_le32(filter_flags);
5202                         iwl4965_commit_rxon(priv);
5203                 }
5204         }
5205         mutex_unlock(&priv->mutex);
5206
5207         return count;
5208 }
5209
5210 static DEVICE_ATTR(filter_flags, S_IWUSR | S_IRUGO, show_filter_flags,
5211                    store_filter_flags);
5212
5213 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5214
5215 static ssize_t show_measurement(struct device *d,
5216                                 struct device_attribute *attr, char *buf)
5217 {
5218         struct iwl_priv *priv = dev_get_drvdata(d);
5219         struct iwl4965_spectrum_notification measure_report;
5220         u32 size = sizeof(measure_report), len = 0, ofs = 0;
5221         u8 *data = (u8 *) & measure_report;
5222         unsigned long flags;
5223
5224         spin_lock_irqsave(&priv->lock, flags);
5225         if (!(priv->measurement_status & MEASUREMENT_READY)) {
5226                 spin_unlock_irqrestore(&priv->lock, flags);
5227                 return 0;
5228         }
5229         memcpy(&measure_report, &priv->measure_report, size);
5230         priv->measurement_status = 0;
5231         spin_unlock_irqrestore(&priv->lock, flags);
5232
5233         while (size && (PAGE_SIZE - len)) {
5234                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5235                                    PAGE_SIZE - len, 1);
5236                 len = strlen(buf);
5237                 if (PAGE_SIZE - len)
5238                         buf[len++] = '\n';
5239
5240                 ofs += 16;
5241                 size -= min(size, 16U);
5242         }
5243
5244         return len;
5245 }
5246
5247 static ssize_t store_measurement(struct device *d,
5248                                  struct device_attribute *attr,
5249                                  const char *buf, size_t count)
5250 {
5251         struct iwl_priv *priv = dev_get_drvdata(d);
5252         struct ieee80211_measurement_params params = {
5253                 .channel = le16_to_cpu(priv->active_rxon.channel),
5254                 .start_time = cpu_to_le64(priv->last_tsf),
5255                 .duration = cpu_to_le16(1),
5256         };
5257         u8 type = IWL_MEASURE_BASIC;
5258         u8 buffer[32];
5259         u8 channel;
5260
5261         if (count) {
5262                 char *p = buffer;
5263                 strncpy(buffer, buf, min(sizeof(buffer), count));
5264                 channel = simple_strtoul(p, NULL, 0);
5265                 if (channel)
5266                         params.channel = channel;
5267
5268                 p = buffer;
5269                 while (*p && *p != ' ')
5270                         p++;
5271                 if (*p)
5272                         type = simple_strtoul(p + 1, NULL, 0);
5273         }
5274
5275         IWL_DEBUG_INFO("Invoking measurement of type %d on "
5276                        "channel %d (for '%s')\n", type, params.channel, buf);
5277         iwl4965_get_measurement(priv, &params, type);
5278
5279         return count;
5280 }
5281
5282 static DEVICE_ATTR(measurement, S_IRUSR | S_IWUSR,
5283                    show_measurement, store_measurement);
5284 #endif /* CONFIG_IWL4965_SPECTRUM_MEASUREMENT */
5285
5286 static ssize_t store_retry_rate(struct device *d,
5287                                 struct device_attribute *attr,
5288                                 const char *buf, size_t count)
5289 {
5290         struct iwl_priv *priv = dev_get_drvdata(d);
5291
5292         priv->retry_rate = simple_strtoul(buf, NULL, 0);
5293         if (priv->retry_rate <= 0)
5294                 priv->retry_rate = 1;
5295
5296         return count;
5297 }
5298
5299 static ssize_t show_retry_rate(struct device *d,
5300                                struct device_attribute *attr, char *buf)
5301 {
5302         struct iwl_priv *priv = dev_get_drvdata(d);
5303         return sprintf(buf, "%d", priv->retry_rate);
5304 }
5305
5306 static DEVICE_ATTR(retry_rate, S_IWUSR | S_IRUSR, show_retry_rate,
5307                    store_retry_rate);
5308
5309 static ssize_t store_power_level(struct device *d,
5310                                  struct device_attribute *attr,
5311                                  const char *buf, size_t count)
5312 {
5313         struct iwl_priv *priv = dev_get_drvdata(d);
5314         int rc;
5315         int mode;
5316
5317         mode = simple_strtoul(buf, NULL, 0);
5318         mutex_lock(&priv->mutex);
5319
5320         if (!iwl_is_ready(priv)) {
5321                 rc = -EAGAIN;
5322                 goto out;
5323         }
5324
5325         rc = iwl_power_set_user_mode(priv, mode);
5326         if (rc) {
5327                 IWL_DEBUG_MAC80211("failed setting power mode.\n");
5328                 goto out;
5329         }
5330         rc = count;
5331
5332  out:
5333         mutex_unlock(&priv->mutex);
5334         return rc;
5335 }
5336
5337 #define MAX_WX_STRING 80
5338
5339 /* Values are in microsecond */
5340 static const s32 timeout_duration[] = {
5341         350000,
5342         250000,
5343         75000,
5344         37000,
5345         25000,
5346 };
5347 static const s32 period_duration[] = {
5348         400000,
5349         700000,
5350         1000000,
5351         1000000,
5352         1000000
5353 };
5354
5355 static ssize_t show_power_level(struct device *d,
5356                                 struct device_attribute *attr, char *buf)
5357 {
5358         struct iwl_priv *priv = dev_get_drvdata(d);
5359         int level = priv->power_data.power_mode;
5360         char *p = buf;
5361
5362         p += sprintf(p, "%d ", level);
5363         switch (level) {
5364         case IWL_POWER_MODE_CAM:
5365         case IWL_POWER_AC:
5366                 p += sprintf(p, "(AC)");
5367                 break;
5368         case IWL_POWER_BATTERY:
5369                 p += sprintf(p, "(BATTERY)");
5370                 break;
5371         default:
5372                 p += sprintf(p,
5373                              "(Timeout %dms, Period %dms)",
5374                              timeout_duration[level - 1] / 1000,
5375                              period_duration[level - 1] / 1000);
5376         }
5377 /*
5378         if (!(priv->power_mode & IWL_POWER_ENABLED))
5379                 p += sprintf(p, " OFF\n");
5380         else
5381                 p += sprintf(p, " \n");
5382 */
5383         p += sprintf(p, " \n");
5384         return (p - buf + 1);
5385 }
5386
5387 static DEVICE_ATTR(power_level, S_IWUSR | S_IRUSR, show_power_level,
5388                    store_power_level);
5389
5390 static ssize_t show_channels(struct device *d,
5391                              struct device_attribute *attr, char *buf)
5392 {
5393         /* all this shit doesn't belong into sysfs anyway */
5394         return 0;
5395 }
5396
5397 static DEVICE_ATTR(channels, S_IRUSR, show_channels, NULL);
5398
5399 static ssize_t show_statistics(struct device *d,
5400                                struct device_attribute *attr, char *buf)
5401 {
5402         struct iwl_priv *priv = dev_get_drvdata(d);
5403         u32 size = sizeof(struct iwl4965_notif_statistics);
5404         u32 len = 0, ofs = 0;
5405         u8 *data = (u8 *) & priv->statistics;
5406         int rc = 0;
5407
5408         if (!iwl_is_alive(priv))
5409                 return -EAGAIN;
5410
5411         mutex_lock(&priv->mutex);
5412         rc = iwl_send_statistics_request(priv, 0);
5413         mutex_unlock(&priv->mutex);
5414
5415         if (rc) {
5416                 len = sprintf(buf,
5417                               "Error sending statistics request: 0x%08X\n", rc);
5418                 return len;
5419         }
5420
5421         while (size && (PAGE_SIZE - len)) {
5422                 hex_dump_to_buffer(data + ofs, size, 16, 1, buf + len,
5423                                    PAGE_SIZE - len, 1);
5424                 len = strlen(buf);
5425                 if (PAGE_SIZE - len)
5426                         buf[len++] = '\n';
5427
5428                 ofs += 16;
5429                 size -= min(size, 16U);
5430         }
5431
5432         return len;
5433 }
5434
5435 static DEVICE_ATTR(statistics, S_IRUGO, show_statistics, NULL);
5436
5437 static ssize_t show_status(struct device *d,
5438                            struct device_attribute *attr, char *buf)
5439 {
5440         struct iwl_priv *priv = (struct iwl_priv *)d->driver_data;
5441         if (!iwl_is_alive(priv))
5442                 return -EAGAIN;
5443         return sprintf(buf, "0x%08x\n", (int)priv->status);
5444 }
5445
5446 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
5447
5448 /*****************************************************************************
5449  *
5450  * driver setup and teardown
5451  *
5452  *****************************************************************************/
5453
5454 static void iwl4965_setup_deferred_work(struct iwl_priv *priv)
5455 {
5456         priv->workqueue = create_workqueue(DRV_NAME);
5457
5458         init_waitqueue_head(&priv->wait_command_queue);
5459
5460         INIT_WORK(&priv->up, iwl4965_bg_up);
5461         INIT_WORK(&priv->restart, iwl4965_bg_restart);
5462         INIT_WORK(&priv->rx_replenish, iwl4965_bg_rx_replenish);
5463         INIT_WORK(&priv->scan_completed, iwl4965_bg_scan_completed);
5464         INIT_WORK(&priv->request_scan, iwl4965_bg_request_scan);
5465         INIT_WORK(&priv->abort_scan, iwl4965_bg_abort_scan);
5466         INIT_WORK(&priv->rf_kill, iwl4965_bg_rf_kill);
5467         INIT_WORK(&priv->beacon_update, iwl4965_bg_beacon_update);
5468         INIT_WORK(&priv->set_monitor, iwl4965_bg_set_monitor);
5469         INIT_DELAYED_WORK(&priv->post_associate, iwl4965_bg_post_associate);
5470         INIT_DELAYED_WORK(&priv->init_alive_start, iwl_bg_init_alive_start);
5471         INIT_DELAYED_WORK(&priv->alive_start, iwl_bg_alive_start);
5472         INIT_DELAYED_WORK(&priv->scan_check, iwl4965_bg_scan_check);
5473
5474         iwl4965_hw_setup_deferred_work(priv);
5475
5476         tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
5477                      iwl4965_irq_tasklet, (unsigned long)priv);
5478 }
5479
5480 static void iwl4965_cancel_deferred_work(struct iwl_priv *priv)
5481 {
5482         iwl4965_hw_cancel_deferred_work(priv);
5483
5484         cancel_delayed_work_sync(&priv->init_alive_start);
5485         cancel_delayed_work(&priv->scan_check);
5486         cancel_delayed_work(&priv->alive_start);
5487         cancel_delayed_work(&priv->post_associate);
5488         cancel_work_sync(&priv->beacon_update);
5489 }
5490
5491 static struct attribute *iwl4965_sysfs_entries[] = {
5492         &dev_attr_channels.attr,
5493         &dev_attr_flags.attr,
5494         &dev_attr_filter_flags.attr,
5495 #ifdef CONFIG_IWL4965_SPECTRUM_MEASUREMENT
5496         &dev_attr_measurement.attr,
5497 #endif
5498         &dev_attr_power_level.attr,
5499         &dev_attr_retry_rate.attr,
5500         &dev_attr_rs_window.attr,
5501         &dev_attr_statistics.attr,
5502         &dev_attr_status.attr,
5503         &dev_attr_temperature.attr,
5504         &dev_attr_tx_power.attr,
5505 #ifdef CONFIG_IWLWIFI_DEBUG
5506         &dev_attr_debug_level.attr,
5507 #endif
5508         &dev_attr_version.attr,
5509
5510         NULL
5511 };
5512
5513 static struct attribute_group iwl4965_attribute_group = {
5514         .name = NULL,           /* put in device directory */
5515         .attrs = iwl4965_sysfs_entries,
5516 };
5517
5518 static struct ieee80211_ops iwl4965_hw_ops = {
5519         .tx = iwl4965_mac_tx,
5520         .start = iwl4965_mac_start,
5521         .stop = iwl4965_mac_stop,
5522         .add_interface = iwl4965_mac_add_interface,
5523         .remove_interface = iwl4965_mac_remove_interface,
5524         .config = iwl4965_mac_config,
5525         .config_interface = iwl4965_mac_config_interface,
5526         .configure_filter = iwl4965_configure_filter,
5527         .set_key = iwl4965_mac_set_key,
5528         .update_tkip_key = iwl4965_mac_update_tkip_key,
5529         .get_stats = iwl4965_mac_get_stats,
5530         .get_tx_stats = iwl4965_mac_get_tx_stats,
5531         .conf_tx = iwl4965_mac_conf_tx,
5532         .get_tsf = iwl4965_mac_get_tsf,
5533         .reset_tsf = iwl4965_mac_reset_tsf,
5534         .beacon_update = iwl4965_mac_beacon_update,
5535         .bss_info_changed = iwl4965_bss_info_changed,
5536 #ifdef CONFIG_IWL4965_HT
5537         .ampdu_action = iwl4965_mac_ampdu_action,
5538 #endif  /* CONFIG_IWL4965_HT */
5539         .hw_scan = iwl4965_mac_hw_scan
5540 };
5541
5542 static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
5543 {
5544         int err = 0;
5545         struct iwl_priv *priv;
5546         struct ieee80211_hw *hw;
5547         struct iwl_cfg *cfg = (struct iwl_cfg *)(ent->driver_data);
5548         unsigned long flags;
5549         DECLARE_MAC_BUF(mac);
5550
5551         /************************
5552          * 1. Allocating HW data
5553          ************************/
5554
5555         /* Disabling hardware scan means that mac80211 will perform scans
5556          * "the hard way", rather than using device's scan. */
5557         if (cfg->mod_params->disable_hw_scan) {
5558                 if (cfg->mod_params->debug & IWL_DL_INFO)
5559                         dev_printk(KERN_DEBUG, &(pdev->dev),
5560                                    "Disabling hw_scan\n");
5561                 iwl4965_hw_ops.hw_scan = NULL;
5562         }
5563
5564         hw = iwl_alloc_all(cfg, &iwl4965_hw_ops);
5565         if (!hw) {
5566                 err = -ENOMEM;
5567                 goto out;
5568         }
5569         priv = hw->priv;
5570         /* At this point both hw and priv are allocated. */
5571
5572         SET_IEEE80211_DEV(hw, &pdev->dev);
5573
5574         IWL_DEBUG_INFO("*** LOAD DRIVER ***\n");
5575         priv->cfg = cfg;
5576         priv->pci_dev = pdev;
5577
5578 #ifdef CONFIG_IWLWIFI_DEBUG
5579         priv->debug_level = priv->cfg->mod_params->debug;
5580         atomic_set(&priv->restrict_refcnt, 0);
5581 #endif
5582
5583         /**************************
5584          * 2. Initializing PCI bus
5585          **************************/
5586         if (pci_enable_device(pdev)) {
5587                 err = -ENODEV;
5588                 goto out_ieee80211_free_hw;
5589         }
5590
5591         pci_set_master(pdev);
5592
5593         err = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
5594         if (!err)
5595                 err = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
5596         if (err) {
5597                 err = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
5598                 if (!err)
5599                         err = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
5600                 /* both attempts failed: */
5601                 if (err) {
5602                         printk(KERN_WARNING "%s: No suitable DMA available.\n",
5603                                 DRV_NAME);
5604                         goto out_pci_disable_device;
5605                 }
5606         }
5607
5608         err = pci_request_regions(pdev, DRV_NAME);
5609         if (err)
5610                 goto out_pci_disable_device;
5611
5612         pci_set_drvdata(pdev, priv);
5613
5614         /* We disable the RETRY_TIMEOUT register (0x41) to keep
5615          * PCI Tx retries from interfering with C3 CPU state */
5616         pci_write_config_byte(pdev, 0x41, 0x00);
5617
5618         /***********************
5619          * 3. Read REV register
5620          ***********************/
5621         priv->hw_base = pci_iomap(pdev, 0, 0);
5622         if (!priv->hw_base) {
5623                 err = -ENODEV;
5624                 goto out_pci_release_regions;
5625         }
5626
5627         IWL_DEBUG_INFO("pci_resource_len = 0x%08llx\n",
5628                 (unsigned long long) pci_resource_len(pdev, 0));
5629         IWL_DEBUG_INFO("pci_resource_base = %p\n", priv->hw_base);
5630
5631         iwl_hw_detect(priv);
5632         printk(KERN_INFO DRV_NAME
5633                 ": Detected Intel Wireless WiFi Link %s REV=0x%X\n",
5634                 priv->cfg->name, priv->hw_rev);
5635
5636         /* amp init */
5637         err = priv->cfg->ops->lib->apm_ops.init(priv);
5638         if (err < 0) {
5639                 IWL_DEBUG_INFO("Failed to init APMG\n");
5640                 goto out_iounmap;
5641         }
5642         /*****************
5643          * 4. Read EEPROM
5644          *****************/
5645         /* Read the EEPROM */
5646         err = iwl_eeprom_init(priv);
5647         if (err) {
5648                 IWL_ERROR("Unable to init EEPROM\n");
5649                 goto out_iounmap;
5650         }
5651         err = iwl_eeprom_check_version(priv);
5652         if (err)
5653                 goto out_iounmap;
5654
5655         /* extract MAC Address */
5656         iwl_eeprom_get_mac(priv, priv->mac_addr);
5657         IWL_DEBUG_INFO("MAC address: %s\n", print_mac(mac, priv->mac_addr));
5658         SET_IEEE80211_PERM_ADDR(priv->hw, priv->mac_addr);
5659
5660         /************************
5661          * 5. Setup HW constants
5662          ************************/
5663         /* Device-specific setup */
5664         if (priv->cfg->ops->lib->set_hw_params(priv)) {
5665                 IWL_ERROR("failed to set hw parameters\n");
5666                 goto out_free_eeprom;
5667         }
5668
5669         /*******************
5670          * 6. Setup priv
5671          *******************/
5672
5673         err = iwl_init_drv(priv);
5674         if (err)
5675                 goto out_free_eeprom;
5676         /* At this point both hw and priv are initialized. */
5677
5678         /**********************************
5679          * 7. Initialize module parameters
5680          **********************************/
5681
5682         /* Disable radio (SW RF KILL) via parameter when loading driver */
5683         if (priv->cfg->mod_params->disable) {
5684                 set_bit(STATUS_RF_KILL_SW, &priv->status);
5685                 IWL_DEBUG_INFO("Radio disabled.\n");
5686         }
5687
5688         /********************
5689          * 8. Setup services
5690          ********************/
5691         spin_lock_irqsave(&priv->lock, flags);
5692         iwl4965_disable_interrupts(priv);
5693         spin_unlock_irqrestore(&priv->lock, flags);
5694
5695         err = sysfs_create_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5696         if (err) {
5697                 IWL_ERROR("failed to create sysfs device attributes\n");
5698                 goto out_uninit_drv;
5699         }
5700
5701
5702         iwl4965_setup_deferred_work(priv);
5703         iwl4965_setup_rx_handlers(priv);
5704
5705         /********************
5706          * 9. Conclude
5707          ********************/
5708         pci_save_state(pdev);
5709         pci_disable_device(pdev);
5710
5711         /**********************************
5712          * 10. Setup and register mac80211
5713          **********************************/
5714
5715         err = iwl_setup_mac(priv);
5716         if (err)
5717                 goto out_remove_sysfs;
5718
5719         err = iwl_dbgfs_register(priv, DRV_NAME);
5720         if (err)
5721                 IWL_ERROR("failed to create debugfs files\n");
5722
5723         /* notify iwlcore to init */
5724         iwlcore_low_level_notify(priv, IWLCORE_INIT_EVT);
5725         return 0;
5726
5727  out_remove_sysfs:
5728         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5729  out_uninit_drv:
5730         iwl_uninit_drv(priv);
5731  out_free_eeprom:
5732         iwl_eeprom_free(priv);
5733  out_iounmap:
5734         pci_iounmap(pdev, priv->hw_base);
5735  out_pci_release_regions:
5736         pci_release_regions(pdev);
5737         pci_set_drvdata(pdev, NULL);
5738  out_pci_disable_device:
5739         pci_disable_device(pdev);
5740  out_ieee80211_free_hw:
5741         ieee80211_free_hw(priv->hw);
5742  out:
5743         return err;
5744 }
5745
5746 static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
5747 {
5748         struct iwl_priv *priv = pci_get_drvdata(pdev);
5749         struct list_head *p, *q;
5750         int i;
5751         unsigned long flags;
5752
5753         if (!priv)
5754                 return;
5755
5756         IWL_DEBUG_INFO("*** UNLOAD DRIVER ***\n");
5757
5758         if (priv->mac80211_registered) {
5759                 ieee80211_unregister_hw(priv->hw);
5760                 priv->mac80211_registered = 0;
5761         }
5762
5763         set_bit(STATUS_EXIT_PENDING, &priv->status);
5764
5765         iwl4965_down(priv);
5766
5767         /* make sure we flush any pending irq or
5768          * tasklet for the driver
5769          */
5770         spin_lock_irqsave(&priv->lock, flags);
5771         iwl4965_disable_interrupts(priv);
5772         spin_unlock_irqrestore(&priv->lock, flags);
5773
5774         iwl_synchronize_irq(priv);
5775
5776         /* Free MAC hash list for ADHOC */
5777         for (i = 0; i < IWL_IBSS_MAC_HASH_SIZE; i++) {
5778                 list_for_each_safe(p, q, &priv->ibss_mac_hash[i]) {
5779                         list_del(p);
5780                         kfree(list_entry(p, struct iwl4965_ibss_seq, list));
5781                 }
5782         }
5783
5784         iwlcore_low_level_notify(priv, IWLCORE_REMOVE_EVT);
5785         iwl_dbgfs_unregister(priv);
5786         sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
5787
5788         iwl4965_dealloc_ucode_pci(priv);
5789
5790         if (priv->rxq.bd)
5791                 iwl_rx_queue_free(priv, &priv->rxq);
5792         iwl_hw_txq_ctx_free(priv);
5793
5794         iwlcore_clear_stations_table(priv);
5795         iwl_eeprom_free(priv);
5796
5797
5798         /*netif_stop_queue(dev); */
5799         flush_workqueue(priv->workqueue);
5800
5801         /* ieee80211_unregister_hw calls iwl4965_mac_stop, which flushes
5802          * priv->workqueue... so we can't take down the workqueue
5803          * until now... */
5804         destroy_workqueue(priv->workqueue);
5805         priv->workqueue = NULL;
5806
5807         pci_iounmap(pdev, priv->hw_base);
5808         pci_release_regions(pdev);
5809         pci_disable_device(pdev);
5810         pci_set_drvdata(pdev, NULL);
5811
5812         iwl_uninit_drv(priv);
5813
5814         if (priv->ibss_beacon)
5815                 dev_kfree_skb(priv->ibss_beacon);
5816
5817         ieee80211_free_hw(priv->hw);
5818 }
5819
5820 #ifdef CONFIG_PM
5821
5822 static int iwl4965_pci_suspend(struct pci_dev *pdev, pm_message_t state)
5823 {
5824         struct iwl_priv *priv = pci_get_drvdata(pdev);
5825
5826         if (priv->is_open) {
5827                 set_bit(STATUS_IN_SUSPEND, &priv->status);
5828                 iwl4965_mac_stop(priv->hw);
5829                 priv->is_open = 1;
5830         }
5831
5832         pci_set_power_state(pdev, PCI_D3hot);
5833
5834         return 0;
5835 }
5836
5837 static int iwl4965_pci_resume(struct pci_dev *pdev)
5838 {
5839         struct iwl_priv *priv = pci_get_drvdata(pdev);
5840
5841         pci_set_power_state(pdev, PCI_D0);
5842
5843         if (priv->is_open)
5844                 iwl4965_mac_start(priv->hw);
5845
5846         clear_bit(STATUS_IN_SUSPEND, &priv->status);
5847         return 0;
5848 }
5849
5850 #endif /* CONFIG_PM */
5851
5852 /*****************************************************************************
5853  *
5854  * driver and module entry point
5855  *
5856  *****************************************************************************/
5857
5858 /* Hardware specific file defines the PCI IDs table for that hardware module */
5859 static struct pci_device_id iwl_hw_card_ids[] = {
5860         {IWL_PCI_DEVICE(0x4229, PCI_ANY_ID, iwl4965_agn_cfg)},
5861         {IWL_PCI_DEVICE(0x4230, PCI_ANY_ID, iwl4965_agn_cfg)},
5862 #ifdef CONFIG_IWL5000
5863         {IWL_PCI_DEVICE(0x4235, PCI_ANY_ID, iwl5300_agn_cfg)},
5864         {IWL_PCI_DEVICE(0x4232, PCI_ANY_ID, iwl5100_agn_cfg)},
5865         {IWL_PCI_DEVICE(0x423A, PCI_ANY_ID, iwl5350_agn_cfg)},
5866 #endif /* CONFIG_IWL5000 */
5867         {0}
5868 };
5869 MODULE_DEVICE_TABLE(pci, iwl_hw_card_ids);
5870
5871 static struct pci_driver iwl_driver = {
5872         .name = DRV_NAME,
5873         .id_table = iwl_hw_card_ids,
5874         .probe = iwl4965_pci_probe,
5875         .remove = __devexit_p(iwl4965_pci_remove),
5876 #ifdef CONFIG_PM
5877         .suspend = iwl4965_pci_suspend,
5878         .resume = iwl4965_pci_resume,
5879 #endif
5880 };
5881
5882 static int __init iwl4965_init(void)
5883 {
5884
5885         int ret;
5886         printk(KERN_INFO DRV_NAME ": " DRV_DESCRIPTION ", " DRV_VERSION "\n");
5887         printk(KERN_INFO DRV_NAME ": " DRV_COPYRIGHT "\n");
5888
5889         ret = iwl4965_rate_control_register();
5890         if (ret) {
5891                 IWL_ERROR("Unable to register rate control algorithm: %d\n", ret);
5892                 return ret;
5893         }
5894
5895         ret = pci_register_driver(&iwl_driver);
5896         if (ret) {
5897                 IWL_ERROR("Unable to initialize PCI module\n");
5898                 goto error_register;
5899         }
5900
5901         return ret;
5902
5903 error_register:
5904         iwl4965_rate_control_unregister();
5905         return ret;
5906 }
5907
5908 static void __exit iwl4965_exit(void)
5909 {
5910         pci_unregister_driver(&iwl_driver);
5911         iwl4965_rate_control_unregister();
5912 }
5913
5914 module_exit(iwl4965_exit);
5915 module_init(iwl4965_init);